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Title:
EXPANSIBLE SLEEVE FOR FACILITATING THE INSTALLATION OF WALL-HUNG OBJECTS, KIT COMPRISING SAID SLEEVE AND RELATED METHOD
Document Type and Number:
WIPO Patent Application WO/2019/020216
Kind Code:
A1
Abstract:
A kit is disclosed for installing bathroom fixtures or other objects to be hung to a wall. The kit comprises a sleeve (1) having a first element (1a) with a through axial cavity (101) and a second element (1 b) that can coaxially engage the first element (1a). A screw coupling (107, 117) is also provided between the first element (1a) and the second element ( 1b), with a first thread ( 107) at a first end of the first element ( 1a) and a second thread ( 117) on the second element (1b), that can engage the first thread ( 107). The screw coupling is so configured that when the first thread (107) and the second thread (117) engage each other, the reciprocal rotation between the first element (1a) and the second element (1b) causes a change in the axial length of the sleeve (1). The second element (1 b) of the sleeve (1) comprises a connection means (123) so configured and arranged to be engaged by means of a maneuvering tool (125) through the through axial cavity (101).

Inventors:
CUCCINIELLO, Daniele (Via Terni 71, Civita Castellana, 01033, IT)
Application Number:
EP2018/025201
Publication Date:
January 31, 2019
Filing Date:
July 23, 2018
Export Citation:
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Assignee:
ALDERO INDUSTRIAL SUPPLIES S.R.L. (Via Quartaccio 1, Civita Castellana, 01033, IT)
International Classes:
E03D11/14; E03C1/322; F16B2/04; F16B37/14; F16B41/00
Domestic Patent References:
WO2012028201A12012-03-08
Foreign References:
DE202009014171U12010-03-04
DE102013112005A12015-04-30
US20150152906A12015-06-04
EP2653769A22013-10-23
US20100247270A12010-09-30
US2993950A1961-07-25
EP2857604A12015-04-08
DE202009014171U12010-03-04
DE102013112005A12015-04-30
EP1338711A12003-08-27
EP2847393A12015-03-18
Attorney, Agent or Firm:
STATTI, Francesco (Via G. Carducci 6, Civitanova Marche, 62012, IT)
Download PDF:
Claims:
C laims

1. K it for mounting wall-hung objects, in particular wall-hung bathroom fixtures, comprising a sleeve (1), having:

a first element (1 a) with a through axial cavity (101);

a second el ement ( 1 b) that can coaxi ally engage the f i rst el ement ( 1 a); a screw coupl i ng ( 107, 117) between the f i rst el ement ( 1 a) and the second el ement (1 b), with a f i rst thread ( 107) at a f i rst end of the f i rst el ement ( 1 a) and a second thread (117) on the second element (1 b), that can engage the first thread ( 107); the screw coupl i ng bei ng so configured that when the f i rst thread (107) and the second thread (117) engage each other, the reciprocal rotation between the f i rst element ( 1 a) and the second element ( 1 b) causes a change i n the axial length of the sleeve (1);

wherei n the second element (1 b) of the sleeve (1) comprises a connection means (123) so configured and arranged to be engaged by means of a maneuvering tool (125) through the through axial cavity (101), to rotate the second element (1 b) with respect to the first element (1 a) so as to cause ad adjustment in the axial length of the sleeve (1).

2. T he kit of claim 1, wherein the first thread (107) is a female thread and the second thread (117) is a male thread, and wherein the female thread (107) is provided in an inner surface of the through axial cavity (101) of the first el ement (1a) of the sleeve (1).

3. T he kit of claim 1 or 2, wherein the first element (1 a) of the sleeve (1) comprises a first hollow body (103) and a second hollow body (105) integral and substantially coaxial with each other. 4. T he kit of claim 3, wherein the first thread (107) is provided on the second hollow body (105) of the first element (1 a) of the sleeve (1), projecting from an end ( 106) of the f i rst hoi I ow body ( 103) .

5. T he kit of clai m 3, wherei n f i rst thread ( 107) is a male thread and the second thread (117) is a female thread, and wherein the first thread (107) is provided on the second hollow body (105) of the fi rst el ement (1 a) of the sleeve (1).

6. T he kit of one or more of the previous claims, wherein the second element (l b) of the sleeve (1) has a body with a threaded collar (115; 124) and a wall (121) transverse to the collar, the wall forming the connection means (123) for engagi ng the maneuveri ng tool ( 125) . 7. T he kit of one or more of the previous claims, further comprising an anchoring pin (131 ) that can be inserted into said through axial cavity (101) of the sleeve (1), the anchoring pin (131) being insertable into the through axial cavity (103) from and end of the f i rst el ement ( 1 a) opposite to the second el ement (1 b).

8. T he kit of one or more of the previous claims, wherein the first element (l a) of the sleeve (1) comprises a substantially radial through hole (111), and a constrai nt member ( 113) i nsertabl e i nto sai d through hoi e ( 111 ) .

9. T he kit of claim 8, wherein the constraint member (113) comprises a screw, and wherei n the through hole (111) is threaded to engage said screw (113).

10. T he kit of claim 8 or 9, wherein the anchoring pin (131) comprises a flaring (131 A) elongated according to an axial direction of the anchoring pin (131) and of the sleeve (1), co-acti ng with the constraint member (113), to generate on the anchori ng pi n ( 131 ) a tracti on force by i nserti ng the constrai nt member ( 1 13) i nto the through hole (111).

11. T he kit of one or more of the previous claims, wherein the first element (1 a) comprises a centering ring (109) substantially coaxial with the through axial cavity (101 ) and provided on an end surface opposite with respect to the second element (1 b).

12. T he kit of one or more of the previous claims, further comprising a maneuvering tool (125). 13. System comprising an object to be hung (WC), in particular a bathroom fixture, and at least one kit of one or more of the previous claims.

14. Method for fixing an object to be hung, in particular a bathroom fixture, to a bearing structure, said object to be hung comprising at least one niche that can be accessed from the outside of the object and is deli mited by a fi rst wal I and by a second wall that are opposite to each other, the first wall having a through opening; the method comprisi ng the fol lowi ng steps:

- i nserti ng, i nto the ni che, a si eeve of the kit of one or more of the previ ous claims, so that the first element of the sleeve is directed towards the first wall of the object to be hung and the second element of the sleeve is di rected towards the second wal I of the obj ect to be hung,

- aligning the through axial cavity of the sleeve with the through opening of the f i rst wal I of the obj ect to be hung ;

- i nserti ng a maneuveri ng tool through the through openi ng of the f i rst wal I and through the through axial cavity of the si eeve, up to engage the second element of the sleeve with the maneuveri ng tool;

- through said maneuveri ng tool, rotati ng the second element of the sleeve with respect to the f i rst el ement of the si eeve, so as axi al ly to el ongate the sleeve (1) up to stop it in the niche through interference. 15. T he method of claim 14, further comprising the fol I owing steps:

- mounting the anchoring pin on a bar anchored to a bearing structure where the object to be hung shall be mounted;

- movi ng the obj ect to be hung towards the beari ng structure, i nserti ng the anchoring pin through the through opening into the first wall of the object to be hung and i nto the through axial cavity of the sleeve;

- generati ng a tracti on force on the anchori ng pi n i n order to press the object to be hung agai nst the beari ng structure.

16. T he method of claim 15, wherein the step of generating a traction force on the anchori ng pi n comprises the step of i nserti ng a constrai nt member through a substantially radial hole of the si eeve, said constraint member co-acting with a flaring provided in the anchoring pin and extending according to the axial direction of the anchoring pin, a radial thrust of the constraint member generating a thrust onto the object to be hung in axial direction with respect to the anchoring pin and against the beari ng structure.

17. E xpansi bl e si eeve for f aci I i tati ng the i nstal I ati on of systems for wal I - fixing, characterized by comprising:

- a first element: - constituted by two hoi I ow bodi es, an outer body and an i nner body, put over each other, whose diameter of i nner surface is substantial ly the same;

- having a female thread provided on the inner surface of the inner body so as to ensure the connecti on with a second el ement;

- having a centering ring provided on the free surface of the outer body and with the same i nner diameter as the two hoi low bodies;

- a second element:

- havi ng a male thread with the same nomi nal diameter as the thread that is provided on the first element and is necessary to couple it to said first element;

- provided with a slot to ensure the application of a maneuvering wrench;

- adapted to moveforward relatively with respect to said first el ement under the action of the maneuvering wrench.

18. T he expansible sleeve of claim 17, characterized by being installed in a niche with the centering ring facing a hole provided on the bathroom fixture so as to ensure coaxial ity between hole and sleeve.

19. T he expansible sleeve of claim 17 or 18, characterized in that the dimension of said sleeve, when the second element is completely screwed to the first element, is lower than the length of the niche.

20. T he expansible sleeve of claim 17, 18 or 19, characterized in that the dimension of said sleeve, when the second element is completely unscrewed with respect to the first el ement, is greater than the length of the niche. 21. T he expansible sleeve of one or more of claims 17 to 20, characterized in that the surfaces of the sleeve, when touch the two opposite sides of the niche generating interference between the parts, ensure the immobility of said sleeve with respect to the bathroom fixture following the application of the maneuver! ng wrench.

Description:
E xpansible sleeve for facilitating the installation of wall-hung obj ects, kit comprising said sleeve and related method.

Description

TE CH NICA L FIE L D [0001 ] T he present i nventi on rel ates to systems for f ixi ng obj ects that shal I be hung to beari ng structures, for i nstance to a wal I, i n particular systems for fixi ng wal l-hung bathroom fixtures. More specifically, embodiments disclosed herein relate to kits comprising a sleeve to be positioned before mounting the bathroom fixture and able to adapt to the di mension of a niche provided i n the bathroom fixture. [0002] T he invention also relates to a method for mounting wall-hung bathroom fixtures or other objects to be hung to a bearing structure.

BACKGROUND A RT

[0003] For wal I -mounti ng of wall-hung bathroom fixtures, specific brackets shall be positioned i n the wal I, which are designed accordi ng to U NI standards and are requi red for positioning and anchoring the bathroom fixtures. The brackets end with threaded bars, allowing interaction with the various fixing systems.

[0004] T he fixi ng systems are constituted by several modul ar el ements.

[0005] One of these elements is a pin made of steel, which shall be applied to the threaded bars mentioned above. Once this connection has been done, the bathroom fixture can be anchored by means of the fixing system. E P2857604 A 1, DE 202009014171 U1, DE 201310112005 A 1, E P1338711 A 1, E P2847393 A 1 descri be various fixi ng systems.

[0006] For the anchoring, the fi rst thing to do is to position a system element in a specific area of the bathroom fixture and then to make it interact with a pin made of steel.

[0007] T his system element is a sort of plastic sleeve, the i nner diameter whereof is al most equal to the diameter of the steel pi n. T his positioni ng procedure is done before the mounting, as these operations are typically characterized by low or nul l visibility. The operator shall therefore be sure that all the elements are positioned in the right way in the specific areas, so as to perform this operation.

[0008] T he area of the bathroom fixture where the plastic sleeve shall be positioned is constituted by a niche, whose shape is not standardized. The niche is accessible from the bottom and is in communication with the anchoring wall through a hole. The steel pi n passes through this hoi e so as to i nteract with the rest of the f ixi ng system.

[0009] T he plastic sleeve shall therefore remain in a fixed position inside the niche, against the action of gravity so that the hole of the niche and the hole of the sleeve are coaxial with each other. [0010] T his need is satisfied, according to the prior art, through different methods, disclosed in the above-mentioned documents.

[0011] E P2857604 discloses a system comprising a sleeve, on the upper surface of which plastic brushes or, alternatively, a spongy pad are provided, so that the height of the overall element is greater than the length of the niche. The brushes allow positioning the sleeve inside the niche through interference, so that the sleeve remains in the position chosen by the operator. Obviously, i n order to operate, this system shall contrast two wal Is of the niche. T his known system has some disadvantages as, duri ng the storing step, damages can occurto the plastic/spongy elements. T his drawback can result i n problems duri ng the mounti ng step, as the system does not ensure i nterference between sleeve and walls of the niche.

[0012] DE 202009014171 discloses a fixing system comprising a sleeve and an innovative element shaped like a hollow truncated cone. A n end of the element shaped like a hollow truncated cone is constituted by an enlargement so that the diameter thereof is slightly greater than the greater diameter of the truncated cone. T he other end is constituted by a thread whose nominal diameter is equal to the lower diameter of the truncated cone. T he sleeve has a corresponding thread allowing the coupling between truncated-conical element and sleeve. Once the sleeve has been positioned inside the niche of the bathroom fixture to be wall-hung, from the side of the rear surface of the bathroom fixture, the truncated cone is inserted into the hole in communication with the niche so that the two elements can be coupled. T he end part with the enlargement has a diameter greater than the diameter of the hole and it will be therefore possible to realize an integral fixed coupling in correspondence of the hole.

[0013] DE 201310112005 discloses a fixing system constituted by sleeve and truncated cone. T he difference with respect to the system descri bed above is only the different method for coupling the sleeve and the truncated cone, as in this case it uses a toothi ng.

[0014] E P1338711 A 1 discloses a system where, on an end of the sleeve, positioning wings are provided whose length is equal to the length of the hole provided on the bathroom fixture in question, the wings are made of a deformable plastic. The sleeve is positioned i n the niche and the operator shal I deform these elements so that they can be i nserted i nto the hoi e. W hen not deformed, the wi ngs do not al I ow the i nserti on i nto the hole, as, if we imagine a circle circumscri bed to the wings, it has a greater diameter than the diameter of the hole. A small projection is provided on the end of each wing. The projections allows gripping the rear surface of the bathroom fixture. Installation difficulties will occur when the small dimensions of the niche do not allow the insertion of the positioning wings inside the hole. Further problems can occur in case the length of the hole is lower than the length of the positioning wings: in this case the system will be poor and does not ensure immobility between sleeve and bathroom fixture. [0015] E P2847393 A 1 discloses a fixing system providi ng for accessing the niche for positioning the sleeve from the rear surface of the bathroom fixture. On the sleeve, projections are provided, and the hole allowing accessing the niche has such a shape to allow the entrance of this latter. Once the sleeve has been inserted inside the niche and by rotating it by a given angle, it will grip the adjacent areas of the bathroom fixture. The relative position of the sleeve with respect to the hole, in the instant f ol I owi ng the rotati on, prevents the removal thereof. T his system requi res, to al I ow an adequate positioning, small tolerances for realizing the niche.

[0016] It is necessary to realize a system for mounting bathroom fixtures or other wall-hung objects, which overcome, completely or at least partially, the prior art drawbacks.

[0017] In particular, it will be useful to have available a mounting system provided with a sleeve that can be adapted efficiently to different shapes and/or dimensions of the mounting seats or niches provided inside the object to be hung.

[0018] Itwould be also useful to have avail able a mounting system that can be easily removed from the wall-hung object. It would be also useful to have available a fixing system wherein the sleeve does not require anchoring elements projecting from the rear surface of the object to be hung.

SUM MA RY OF TH E INV E NTION

[0019] According to a first aspect, a kitfor mounting wall-hung objects, in particular wall-hung bathroom fixtures, is described comprising an expansible sleeve. The expansible sleeve comprises a first element with a through axial cavity and a second el ement that can coaxi ally engage the f i rst el ement. T he f i rst el ement and the second element can be connected together by means of a screw coupling having a first thread at a fi rst end of the fi rst element and a second thread on the second element. T he two threads can be mutually engaged and the screw coupli ng is so configured that, when the first thread and the second thread engage each other, the reciprocal rotation between the first element and the second element causes a change in the axial length of the sleeve. T his allows adapting the sleeve to the variable sizes of a seat or niche housi ng the si eeve, provi ded i n the obj ect to be hung. T he second el ement of the si eeve comprises a connection means configured and arranged to be engaged by means of a maneuvering tool through the through axial cavity of the first element of the sleeve. Through the maneuvering tool, the second element can be rotated with respect to the fi rst element so as to cause an adjustment i n the axial length of the sleeve.

[0020] In some embodiments, the kit also comprises an anchoring pin, which can be introduced into the through axial cavity of the sleeve. T he anchoring pin can be introduced into the through axial cavity from an end of the first element opposite to the second element.

[0021] In some embodiments, the first element of the sleeve comprises a substantially radial through hole, i.e. transverse with respect to the through axial cavity, and a constraint member, for example a screw, that can be inserted in said through hole. The through hole is advantageouslythreaded to allowscrewingthescrew to the sleeve. The screw, or other suitable constraint member, can be introduced into the sleeve through the radial hole until it projects in the through axial cavity of the sleeve. In this way, during mounting the constraint member can co-act with an anchoring pin introduced into the axial cavity of the sleeve and generate a thrust resulting in the object to be hung resting by pressure against the bearing structure. To this end, the anchoring pin may comprise a flari ng elongated according to an axial direction of the anchoring pin and of the sleeve. T he constraint member co-acts with an inclined surface of the flaring to generate a traction force onto the anchoring pin.

[0022] According to a further aspect, the invention also provides for a system comprising an object to be hung, in particular a bathroom fixture, and at least a kit as descri bed above. T he kit may comprise a si ngle sleeve, or more sleeves, for example two sleeves, with respective elements associated thereto.

[0023] A ccordi ng to a further aspect, the i nventi on rel ates to a method for f ixi ng an object to be hung, i n particular a bathroom fixture, to a beari ng structure, the object to be hung comprising at least one niche that can be accessed from the outside of the object and is delimited by a first wall and by a second wall that are opposite to each other, and wherein the first wall has a through opening. According to embodiments descri bed herei n, the method comprises the fol lowi ng steps:

inserting, into the niche, a sleeve of the kit descri bed above, so that the first element of the sleeve is oriented towards the fi rst wal I of the object to be hung and the second element of the sleeve is directed towards the second wall of the object to be hung, aligning the through axial cavity of the sleeve with the through opening of the first wall of the object to be hung ;

i nserti ng a maneuveri ng tool through the through openi ng of the f i rst wal I and through the through axial cavity of the sleeve, up to engage the second element of the sleeve with the maneuveri ng tool;

through said maneuvering tool, rotating the second element of the sleeve with respect to the f i rst el ement of the sleeve, so as axi al ly to el ongate the si eeve up to I ock it i n the niche by interference.

[0024] Further advantageous characteristics and embodiments of the kit, of the system, and of the method accordi ng to the present i nventi on are descri bed hereunder with reference to the attached drawings and in the appended claims, which form an integral part of the present description. BRIE F DESCRIPTION OF T H E DRAWINGS

[0025] T he i nventi on shal I be better understood by f ol I owi ng the descri pti on and the accompanying drawing, which show a non-limiting example of embodiment of the invention. More in particular, in the drawing:

Fig.1 is an exploded view of a sleeve in a first embodiment, in combination with a maneuvering tool;

Figs.2 and 3 show longitudinal cross sections, according to II-II of Fig.1, of respectively a first element and a second element of the sleeve of Fig.1;

Fig.4 is an axonometric view of the sleeve of Fig.1 assembled with the maneuveri ng tool extracted;

Fig.5 is an axonometric view analogous to that of Fig.4, with the maneuvering tool i nserted i nto the sleeve;

Figs.6A to 61 are sequences for mounting a bathroom fixture using a kit comprising the sleeve and the tool of Figs. 1 to 5;

F ig.7 is an expl oded vi ew of a si eeve i n a second embodi ment, i n combi nation with a maneuvering tool;

Figs.8 and 9 show longitudinal cross sections of respectively a first element and a second element of the sleeve of Fig.7;

Fig.10 is an axonometric view of the sleeve of Fig.7 assembled with the maneuvering tool extracted;

Fig.11 is an axonometric view analogous to that of Fig.10, with the maneuveri ng tool i nserted i nto the sleeve;

Fig.12 is an exploded view of a sleeve in a third embodiment, in combination with a maneuvering tool;

F igs.13 and 14 show I ongitudi nal cross secti ons of respectively a f i rst el ement and a second element of the sleeve of Fig.12;

Fig.15 is an axonometric view of the sleeve of Fig.12 assembled with the maneuvering tool extracted;

Fig.16 is an axonometric view analogous to that of Fig.1, with the maneuver! ng tool i nserted i nto the sleeve.

DETAIL E D DE SC RIPTION OF E M BODIM E NTS

[0026] A fi rst embodi ment of a kit comprisi ng a sleeve for mounti ng a hung object, especially a wall-hung bathroom fixture (a bidet or a WC) is shown in Figs.1 to 5. Figs. 6A-6I show the operations for mounti ng a bathroom fixture by usi ng the kit comprisi ng the sleeve of Figs.1 to 5. Figs.6A-6I also illustrate the modes of using the mounting kits comprising the sleeves according to the other embodiments described below with reference to F i gs. 7 to 16.

[0027] With initial reference to Figs. 1 to 5, a kit is provided for mounting a wall- hung bathroom fixture, the kit comprising an expansible sleeve 1. T he sleeve 1 comprises a first element 1 a and a second element 1 b. In the embodiments illustrated in Figs. 1 to 5, the first element 1 a has a through axial cavity 101 extending from one to the other of two axial ly opposite ends of the element 1 a.

[0028] In some embodi ments, the f i rst el ement 1 a compri ses a f i rst hoi I ow body 103 and a second hollow body 105 that are substantially coaxial with each other, i.e. having a common longitudinal axis A-A. The two hollow bodies 103 and 105 can be made in a single piece, for example made of molded plastic. However, other materials can be also used, for instance metals. T he two hollow bodies 103, 105 may be realized also as separate components, subsequently assembled together.

[0029] T he through axial cavity 101 extends through both the hollow bodies 103, 105 and can have a substantially constant diameter, i.e. a diameter equal in both the hollow bodies 103, 105. In practical embodiments, the first hollow body 103 has two end surfaces 104 and 106. T he second hoi I ow body 105 extends i n axi al di recti on from the end surface 106.

[0030] On the end surface 104 of the first hollow body 105, opposite to the end surface 106 from which the second body 105 extends, an annular projection, or ring, 109 is provided, which is substantially coaxial with the through axial cavity 101 for the purposes detai I ed bel ow.

[0031] In some embodiments, the through axial cavity 101 is at least partially threaded. Reference 107 indicates the female thread provided on part of the longitudinal extension of the through axial cavity 101. In the illustrated embodiment, the female thread 107 extends from a distal end (i .e. opposite to the hoi I ow body 103) of the hollow body 105, for a given depth inside the through axial cavity 101, for i nstance up to i nsi de the f i rst hoi I ow body 103. [0032] In the embodi ment i 11 ustrated i n F igs. 1 to 5, the second hoi low body 105 has a substantially cylindrical outer shape, the diameter whereof is preferably smaller than the maxi mum transverse di mensi on of the f i rst hoi I ow body 103.

[0033] In the embodi ment i 11 ustrated i n F igs. 1 to 5 the f i rst hoi I ow body 103 has a generally cylindrical outer surface, or a surface that can be enveloped in a cylindrical surface, the diameter whereof is greater than the outer diameter of the second body 105.

[0034] It is also possible to provide the side outer surfaces of the hollow bodies 103, 105 with a different shape, for example giving to one or the other hollow bodies a prismatic shape.

[0035] In the embodiment il lustrated in Figs. 1 to 5 the first element 1 a of the sleeve 1 also has a transverse hole 111 (Fig.3) that is preferably approximately orthogonal to the axis A-A of the sleeve 1. The transverse hole 111 can be threaded in order to engage a constraint member, for example a screw 113. The screw 113 is preferably a headless screw.

[0036] T he second element 1 b of the sleeve is shown in detail in Figs. 1 and 2. T he second element 1 b may have an outer cylindrical shape, even if this is not necessary in this embodi ment. T he outer diameter of the second element 1 b of the sleeve 1 , if of cylindrical shape, may be substantially equal to the outer diameter of the first element 1 a, but also this feature is not mandatory.

[0037] T he second el ement 1 b of the si eeve 1 has a porti on 115 f ormi ng a mal e thread 117. For example, the second element 1 b may have an outer mantle 119, extending around an axis A-A that (when the si eeve 1 is assembled, as in Figs. 4 and 5) coincides with the longitudi nal axis A-A of the first element 1 a of the sleeve 1. T he portion 115 may be i n the form of a cylindrical collar inside the outer mantle 119 and coaxial with the axis A-A, and therefore with the outer mantle 119. T he male thread 117 can be provi ded on the outer surface of the collar f ormi ng the porti on 115. T he col I ar 115 and the preferably cyli ndrical outer mantle 119 extend from a transverse wall 121 that is preferably orthogonal to the axis A-A.

[0038] T he second element 1 b of the sleeve 1 has a connection means so as to be engaged by a maneuveri ng tool, generically indicated with number 125 in Figs. 4 and 5, for the purposes that will be detailed with reference to the sequence of Figs. 6A-6I. The connection means may be a slot or a notch provided i n the transverse wall 121 of the second element 1 a of the sleeve. [0039] In the illustrated embodi ment the connection means, indicated with 123, is formed by a cross-shaped notch, i.e. by two cuts approximately orthogonal to each other. Even if in the illustrated example the cross-shaped notch 123 extends through the whole thickness of the wall 121, however this is not necessary. However, this is the preferred conf igurati on as, the thickness of the transverse wal 1 121 bei ng the same, a larger contact surface between the maneuveri ng tool 125 and the element 1 b of the sleeve 1 and therefore a better transmission of torque between maneuvering tool 125 and element 1 b can be obtai ned.

[0040] Moreover, even if it is possible to use a notch with a simpler shape, for example a rectili near notch, instead of a cross-shaped notch, this latter contributes to i ncrease the contact surface with the maneuveri ng tool 125 and therefore to i ncrease the torque that can be transmitted by the maneuvering tool 125 to the element 1 b of the sleeve 1, thus reducing the risk of deformations of the element 1 b. T he maneuvering tool 125 has a head 127, the shape whereof is complementary to the notch 123 and which is adapted to couple torsional ly to the element 1 b of the sleeve 1 , i n the illustrated example a cross-shaped head 127.

[0041] T he sleeve 1, the screw 113 and, in case, the tool 125 may be part of a mounting kit that can also comprise an anchoring pin for wal I -anchoring, the shape and function whereof (in combination with the sleeve 1) are described below with reference to Figs. 6A-6I. In Fig. 6A-6I the anchoring pin is indicated with 131. [0042] in Figs. 6A-6I the operations are shown for mounting a toilet WC on a wall P by usi ng two kits, each of which comprises a sleeve 1 , a screw 113 and a pi n 131. T he same operations may be performed for mounting other objects to be hung using the same mounting kit.

[0043] Fig.6A shows a flash pipe 141, feeding water from a tank, not shown, and a discharge pipe 143 projecting from a wall P onto which the toilet WC shall be mounted. To fix the toilet WC to the wall P two threaded bars 145 are provided, anchored to the wall, for example integral with a bracket (not visible) arranged below the coveri ng of the wal I P, i n a way known by those ski 11 ed i n the art. Two anchori ng pins 131 are screwed on the two threaded bars 145 previously cut to-measure. In Fig.6A one of the two anchoring pins 131 has been already screwed on the respective threaded bar 145, whilst the other one shall be mounted. To this end, the anchoring pins 131 have a threaded blind axial hole engaging, in screw-like fashion, the respective threaded bar 145. In Fig. 6F both the anchoring pins 131 are screwed on the respective threaded bars 145.

[0044] As shown in Figs. 6A, 6F, near the end opposite to the end that (in mounted arrangement) faces the wall P and where the respective threaded bar 145 is screwed, each anchoring pin 131 has an elongated flaring 131 A, extending in the direction of the axial extension of the respective anchoring pi n 131. T he screw 113 co-acts with the el ongated f I ari ng 131 in the ways and for the purposes descri bed bel ow.

[0045] T he operations for mounting the toi let WC to thewall P comprise, in addition to screwing the anchoring pins 131 on the threaded bars 145, the mounting of two sleeves 1 on thetoiletWC and more in particular in two respective niches 151 provided i n the materi al of the toi I et WC . T he ni ches 151 are accessi bl e from the outsi de of the toiletWC, for example they can be opened downwards, when the toiletWC is fixed to the wall P, so as not to be visible. Each niche 151 is delimited by a first wall 153 and by a second wal 1 155. E ach fi rst wal 1 153 may have a through openi ng 157, preferably shaped like a hole with circular cross-section, accessible from the outside of the toilet WC and ending in the niche 151. The outer surface 153A of the first wall 153 is intended to rest against the wal I P where the toilet WC shall be mounted.

[0046] Figs. 6A, 6B, 6C show the steps of inserting and stopping a sleeve 1 in each niche 151 of the toilet WC. To this end, the toilet WC may be rotated with the mouth thereof facing downwards, so as to make the niches 151 easily accessible by the operator. E ach sleeve 1 is inserted in the respective niche 151 with the axis A-A substantially orthogonal to the walls 153, 155, i.e. so that the axis A-A is parallel to the axis of the opening 157. T he ring 109 facilitates aligning the sleeve 1 with the hole or openi ng 157.

[0047] To allow inserti ng the sleeve 1 into the niche 151, the elements 1 a and 1 b are completely screwed together, so as to reduce the overall axial dimension of the sleeve 1, or they are screwed to an extent sufficient to have a dimension of the sleeve 1 in direction of the axis A-A smaller than the distance between the opposite surfaces of the walls 153 and 155. [0048] Once the sleeve 1 has been positioned in the niche 151 so that the through axial cavity 101 thereof is aligned with the opening 157, the operator can insert the maneuvering tool 125 through the openi ng 157 and inside the through axial cavity 101 up to engage the element 1 b of the sleeve 1 with the head 127 of the maneuveri ng tool 125. By rotating the element 1 b of the sleeve 1 with respect to the element 1 a in the direction of reciprocal unscrewing, the axial dimension of the sleeve 1 is increased until the sleeve 1 is locked in the niche 151.

[0049] T his operation is performed for each of the sleeves 1 i nserted i n the two niches 151 of the toi let WC.

[0050] E ach sleeve 1 may be suitably oriented around the axis A-A thereof before being locked in the niche 151 so that the hole 111 thereof is aligned with a through hole 159 provided in the side wall of the toilet WC. This orientation allows inserting from the outside of the toilet WC the screw 113 into the threaded hole 111 for the purposes explained below.

[0051] When both the sleeves 1 have been fixed in the niche 151 the toilet WC can be anchored to the wall P. As shown in Fig.6F, the toilet WC is rotated and brought to the position of use. T he correctly oriented toilet WC is moved towards the wall P by aligning the openings 157 with the anchoring pins 131 previously screwed on the threaded bars 145. T he pins are so rotated as to arrange the elongated flarings 131A directed opposite to each other. In Fig.6G an enlargement is shown of the sleeve 1 with the screw 113 partially screwed in the transverse hole 111 of the sleeve.

[0052] By moving the toilet WC towards the wall P, the anchoring pins 131 are inserted through the opening 157 and enter the through axial cavities 101 of the sleeves 1, as shown in Fig. 6H. Advantageously, the axial dimension of the pins 131 and/or the position thereof on the threaded bars 145 are so selected that the elongated flarings 131 A are approxi mately i n correspondence of the side holes 159 when the toi let WC is moved towards the wal I P. [0053] At this point, by screwi ng the screws 113 into the threaded holes 111 by means of a wrench inserted through the holes 159, a thrust of the tips of the screws 113 is generated on the i nclined parts of the flarings 131 A. In the enlargement of Fig. 61 the screw 113 has been screwed inside the hole 111 with respect to the position shown in Fig. 6G. T hanks to the inclination of theflarings 131 A the thrust of the screw 113 transforms into a traction force onto the respective pins 131 and therefore in a thrust of the toilet WC agai nst the wal I P, as known to those skilled in the art.

[0054] It is clearly apparent that with the above descri bed configuration of the sleeve 1 in two parts (elements 1 a, 1 b) it is possible preliminarily to anchor the sleeve 1 in the respective niche 151, by telescopically adapting the length of the sleeve 1 to the width of the niche 151. In this way the sleeve 1 can adapt to bathroom fixtures of different shape and may also compensate for the construction tolerances typical of the bathroom fixture made of ceramic, tolerances that vary significantly with the wear of the molds and that can result into changes, also of several mi llimeters, in the width of the niche 151 among different items of the same bathroom fixture.

[0055] T he particular shape of the sleeve 1 described with reference to Figs. 1 to 5 allows to have some particular advantages, in addition to the possibility of being adapted to the size of the niche 151. In particular, the presence of a female thread 107 allows to use the described kit, and more precisely the element 1 a of the sleeve 1 and the screw 1 13, even with other f ixi ng systems for f ixi ng to the bathroom fixture, for example systems of the type described in DE 202009014171.

[0056] T he shape of the el ement 1 b, with the threaded col I ar 115 proj ecti ng towards the element 1 a, further allows to introduce the anchoring pin 131 for a great extent inside the sleeve 1, thus providing for a particularly safe anchoring to the wal I P. [0057] A second embodiment of the sleeve 1 is shown in Figs. 7 to 11. E qual or equivalent parts to those illustrated in Figs. 1 to 5 and described above are indicated with the same reference numbers and wi 11 not be descri bed agai n. H ere bel ow the mai n differences between the two embodi ments wi 11 be highl ighted.

[0058] T he sleeve 1 of Figs. 7 to 11 mainly differs from the sleeve of Figs. 1 to 5 in the different shape of the element 1 b. T his has substantially the shape of a small cylinder with a wall externally threaded with a male thread 117 formed on a wall 115 functionally corresponding to the cylindrical collar 115 of Figs. 1 to 5.

[0059] T he outer surface of the wall 121 of the element 1 b may be provided with reliefs 121 A increasing the friction against the wall 155 of the niche 151. Similar reliefs 121 A may be also provided in the embodiment of Figs. 1 to 5. [0060] T he element 1 a has a single hollow body 103 and is not provided with the hoi I ow body 105. T he f emal e thread 102 extends enti rely i nsi de the hoi I ow body 103.

[0061] T he method of use of the sleeve of Figs. 7 to 11 is the same as descri bed with reference to Figs. 6A-6I and will not be described again.

[0062] In Figs. 12 to 16 a third embodiment of the sleeve 1 is shown. E qual or equivalent parts to those illustrated in Figs. 1 to 5 and described above are indicated with the same reference numbers and will not be described again. Below the main differences between the two embodi ments wi 11 be highl ighted.

[0063] T he sleeve 1 of Figs. 12 to 16 differs from the sleeve of Figs. 1 to 5 mainly for the different shape of the element 1 b. T his latter substantially has the shape of a small cyli nder with a wall or outer collar 124 with a thread 117, having the same f uncti on as the thread 117 descri bed i n the previ ous exempi ary embodi ments, but that in this case is a female thread.

[0064] T he female thread 117 engages in screw- 1 ike fashion with a male thread 107 provi ded on the hoi I ow body 105 proj ecti ng from the hoi I ow body 103 of the el ement 1 a of the sleeve 1.

[0065] T he operation of the sleeve of Figs. 12 to 16 is substantially the same as that described with reference to Figs. 6A to 61.

[0066] W hi I st the invention has been described above with specific reference to non- limiting embodiments, the scope of the invention is defined by the attached claims.

[0067] Moreover, the specific object of the invention is also an expansible sleeve comprising:

- a first element (1 a): - constituted by two hoi low bodies, an outer body ( 103) and an i nner body (105), put over each other, the diameter of the inner surface whereof is substantially the same;

- having a female thread (107) provided on the inner surface of the inner body (106) so as to ensure the connection with a second el ement ( 1 b) of the si eeve;

- havi ng a centeri ng ri ng ( 109) provided on the free surface ( 104) of the outer body (103) and with the same inner diameter as the two hollow bodies (103, 105);

cond el ement (1 b):

- having a male thread (117) with the same nominal diameter as the f emal e thread ( 107) provi ded on the f i rst el ement ( 1 ) and necessary to couple i t to said f i rst el ement (1 a);

- provided with a slot or a notch (123) to ensure the application of a maneuvering wrench or maneuvering tool (125);

- adapted to moveforward relatively with respect to said first el ement (1 a) under the action of the maneuvering wrench (125).