Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
DEVICE AND A METHOD FOR INSTALLING A PLUG IN A WALL
Document Type and Number:
WIPO Patent Application WO/2018/158733
Kind Code:
A1
Abstract:
Described is a device (1) for the installation of a plug (2) in a wall (3), comprising a perforating tip (4) set up for perforating the wall (3) and a stem (5) with an elongate shape and extending along a longitudinal axis (6). The stem (5) comprises a distal end (7), removably couplable to the perforating tip (4), a proximal end (8) defining a gripping portion (9) of the stem (5) and a central portion (10) with an elongate shape which can be inserted in a central hole of a plug (2) in such a way that the plug (2) is applied on the central portion (10) of the stem (5) and in such a way that the stem (5) can be pulled off from the plug (2) when the plug (2) is stably inserted in the wall (3).

Inventors:
AUGIMERI, Antonio (Via S. Nicola 48, Spezzano Della Sila, 87058, IT)
VESCIO, Basilio (Via Fosso 118, Platania, 88040, IT)
PARDEO, Francesca (Località Maiolino 4/B, Gizzeria, 88040, IT)
Application Number:
IB2018/051330
Publication Date:
September 07, 2018
Filing Date:
March 02, 2018
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
BIOTECNOMED - SOCIETA' CONSORTILE A RESP. LIMITATA (Viale Europa SNC Localita' Germaneto, Catanzaro, 88100, IT)
International Classes:
F16B13/00
Foreign References:
CA2080065A11994-04-08
US5915901A1999-06-29
US2744437A1956-05-08
Attorney, Agent or Firm:
BUSSU, Christian (Viale A. Gramsci 42, Firenze, 50132, IT)
Download PDF:
Claims:
CLAIMS

1 . A device (1 ) for installing a plug (2) in a wall (3), comprising a perforating tip (4) configured to perforate a wall (3) and a stem (5) with an elongate shape and extending along a longitudinal axis (6), the stem (5) comprising a distal end (7), removably couplable to the perforating tip (4), a proximal end (8) defining a gripping portion (9) of the stem (5) and a central portion (10) with an elongate shape which can be inserted in a central hole of a plug (2) in such a way that the plug (2) is applied on the central portion (10) of the stem (5) and in such a way that the stem (5) can be pulled off from the plug (2) when the plug (2) is stably inserted in the wall (3) characterised in that the perforating tip (4) is configured in such a way as to be pushed to penetrate in the wall (3) by pushing or axial percussion without rotational movement.

2. The device (1 ) according to claim 1 , wherein the gripping portion (9) of the stem (5) is made in the form of a head (9a) configured for imparting an axial thrust, the axial thrust being designed in such a way that the device 1 penetrates with the plug (2) in the wall (3).

3. The device (1 ) according to any one of the preceding claims, wherein the gripping portion (9) is T-shaped.

4. The device (1 ) according to any one of the preceding claims, wherein the central portion (10) of the stem (5) has a cylindrical shape with a circular cross section.

5. The device (1 ) according to any one of the preceding claims, wherein the central portion (10) of the stem (5) is smooth.

6. The device (1 ) according to any one of the preceding claims, wherein the perforating tip (4) and the distal end (7) of the stem (5) are removably coupled by a threaded connection (5a).

7. The device (1 ) according to any one of the preceding claims, wherein the perforating tip (4) and the distal end (7) of the stem (5) are removably coupled by means of a bayonet connection.

8. The device (1 ) according to claim 1 , wherein the perforating tip (4) has an outer tapered surface, preferably conical, and smooth.

9. The device (1 ) according to claim 1 , wherein the perforating tip (4) has an outer tapered surface, preferably conical, and equipped with ribs (4a) preferably axial.

10. The device (1 ) according to any one of the preceding claims, wherein the proximal end (8) of the stem (5) has gripping means (9b) of the rotational type to allow a user to rotate the stem (5) relative to the perforating tip (4) when the perforating tip (4) is stably inserted in the wall (3).

1 1 . The device (1 ) according to any one of the preceding claims, wherein the perforating tip (4) has a transversal dimension of between 4 and 10 mm and/or wherein the stem (5) has a transversal dimension of between 2 and 8 mm and/or wherein the stem (5) has a length of between 20 and 100 mm.

12. The device (1 ) according to any one of the preceding claims, wherein the maximum transversal dimension of the perforating tip (4), the length of the stem (5) and the maximum transversal dimension of the stem (5) are between them proportional in such a way as to house by friction a "Fischer" type plug (2) of standard type on the central portion (10) of the stem (5) and in such a way that the maximum transversal dimension of the perforating tip (4) is at least equal to the maximum transversal dimension of the plug (2) of commercial type.

13. A method for installing a plug (2) in a wall (3), comprising the steps of:

- preparing a device (1 ) according to any one of the preceding claims; - applying a plug (2) on the stem (5) inserting the stem (5) in the central hole of the plug (2) in such a way that the plug (2) is fitted on the central portion (10) of the stem (5),

- connecting the distal end (7) of the stem (5) to the perforating tip (4),

- pressing the perforating tip (4) in the wall (3) by axial thrust without rotation action applied on the proximal end (8) of the stem (5) until obtaining a desired penetration of the perforating tip (4) in the wall (3), corresponding to a desired insertion depth of the plug (2) in the wall (3);

- separating the stem (5) from the perforating tip (4),

- pulling out the stem (5) leaving the plug (2) engaged in the wall (3).

Description:
Device and a method for installing a plug in a wall

DESCRIPTION

Technical field

This invention relates to a device and a method for installing a plug in a wall.

Background art

The installation of fixing elements, such as, for example, plugs, requires the presence of holes. The hole may be made using a drill or a plugger. Disadvantageously, this solution results in the generation of dust and dirt as well as high installation times.

Even more disadvantageously, many users are not able to adequately use the drill or the plugger, which translates into a significant difficulty for the installation, and they often do not even have these tools.

There are currently various solutions on the market which do not require the use of a drill having fields of general application. For example, fixing systems of the Fischer Self Drill type are known; these systems are of the self-tapping type and do not therefore necessarily require the use of a drill but they do necessarily require screwdrivers or electric screwdrivers for positioning them.

Disadvantageously, none of these solutions makes it possible to insert a commonly used Fischer plug by only using a hammer.

Moreover, the use of only a hammer with the prior art solutions would cause considerable problems during installation. Once the hole is created the latter might be too short or too long relative to the size of the plug. Consequently, the use of a hammer for installing the plug would cause breakage of the plug itself, if the hole is too short, or the loss of the plug in the wall, thereby making it irretrievable, if the hole is too long.

An example are the fastening systems of the Molly Bolt type, which are expansion plugs that are applied using a hammer without drilling which disadvantageously results in the above-mentioned consequences due to their shape and they also have the tendency to rotate during tightening. Moreover, these systems are almost impossible to remove once installed.

Summary of the invention

The aim of this invention is to provide a device and a method for installing a plug in a wall which overcomes the drawbacks of the prior art. More specifically, the aim of this invention is to provide a device which simplifies and speeds up the process for inserting the plug in a wall.

The technical purpose indicated and the aims specified are substantially achieved by a device and a method for installing a plug in a wall comprising the technical features described in one or more of the appended claims.

Further characteristics and advantages of the present invention are more apparent in the description below, with reference to a preferred, non- limiting, embodiment of a device and a method for installing a plug in a wall.

Description of the drawings

The description is set out below with reference to the accompanying drawings which are provided solely for purposes of illustration without restricting the scope of the invention and in which:

- Figures 1 a to 1 c are schematic representations of a device for installing a plug in a wall according to a first embodiment;

- Figures 2a to 2c are schematic representations of a device for installing a plug in a wall according to a second embodiment.

Detailed description of the invention

With reference to Figures 1 a-1 e, the numeral 1 denotes in its entirety a device for installing a plug 2 in a wall 3 according to a first embodiment.

The term plug 2 means a fixing element of the standard or Fischer type, that is to say, a gripping element (usually made of plastic material) equipped with an axial cavity designed to house a screw and a series of peripheral protrusions designed for gripping in the cylindrical surface of a hole made in a wall.

The device 1 comprises a perforating tip 4, configured for perforating the wall 3, and a stem 5 of elongate shape.

The perforating tip 4 has an outer tapered surface, suitable for being pushed to penetrate in a wall. Preferably, the outer tapered surface of the perforating tip 4 is axially symmetric, for example conical. Moreover, the surface is preferably smooth.

The perforating tip 4 is configured in such a way as to be pushed to penetrate in the wall 3 by pushing or axial percussion without any type of rotational movement. More specifically, this is achieved by means of the smooth surface of the perforating tip 4 which is not equipped with devices typical of the perforating with a drill which are suitable for making a penetration as a result of rotation but not with a purely axial movement. As shown in Figures 1 a-1 e, the cross-section of the perforating tip 4 along a longitudinal plane has the shape of an isosceles triangle.

The above-mentioned stem 5 can be coupled to the perforating tip 4.

The stem 5 extends along a longitudinal axis 6 which corresponds with the axis of extension (and penetration) of the perforating tip 4.

The stem 5 comprises a distal end 7, which is removably connectable to the perforating tip 4, and a proximal end 8 defining a gripping portion 9 of the stem 5. The term proximal end 8 means the end of the stem 5 closest to a user during use of the device 1 , and thus the distal end 7 means the end furthest from the user as well as that closest to the wall 3. Between the distal end 7 and the proximal end 8 there is a central portion 10.

The central portion 10 has an elongate shape and can be inserted in a central hole of the plug 2. The central portion 10 is preferably smooth to allow an easy application of the plug 2 on it and a subsequent removal. In this way, the plug 2 is applied on the central portion 10 of the stem 5 in such a way that the stem 5 can be pulled out from the plug 2.

Preferably, the central portion 10 is cylindrical in shape with a circular cross section. Moreover, the central portion is free of threads or other elements and is able to retain the plug 2 only by friction.

The stem 5 is removably connectable to the perforating tip 4, preferably using reversible systems such as a friction coupling, a thread, a bayonet connection or other equivalent connections.

In the embodiment shown in Figures 1 a-1 e, the perforating tip 4 is equipped with, on its portion facing the stem 5, a hole "F" centred on the longitudinal axis and designed to house by interference the above- mentioned distal end 7 of the stem 5.

Preferably, the gripping portion 9 of the stem 5 is made in the form of a head 9a which is shaped in such a way, for example, as to be struck with a hammer to impart the thrust or the axial percussion necessary to cause the device 1 to penetrate with the plug 2 in the wall 3 and/or shaped in such a way as to favour a manual gripping action by a user. For example, the gripping portion 9 can advantageously be T-shaped to favour a pulling action and/or rotation of the stem 5 relative to the perforating tip 4 in order to promote a mutual uncoupling.

The perforating tip 4 and the stem 5 have predetermined dimensions relative to the plug 2 which must be fitted on the stem 5.

In particular, the stem 5 must be sufficiently long to cover entirely the plug 2 and therefore the elongate shape must be such as to house the plug 2 between the perforating tip 4 and the gripping portion 9 with, if necessary, a presence of minimum spaces at the ends. The perforating tip 4 must have a transversal dimension (outside diameter) such as to allow the plug 2 to penetrate in the wall 3 to be used, without the plug 2 entering in interference with a hole which is too narrow and which therefore obstructs the insertion into the hole of the wall.

The same transversal dimension must be such as to make a hole in the wall with a diameter such as to allow the plug 2 to grip, with the relative peripheral protrusions, on the surface of the hole and remain engaged in the wall.

For this reason, the transversal dimension (outside diameter at the base) of the perforating tip 4 is between 4 and 10 mm. The stem may also have a transversal dimension (diameter of the central portion) of between 2 and 8 mm and/or a total length of between 20 and 100 mm.

Preferably, the maximum transversal dimension of the perforating tip 4, the length of the stem 5 and the maximum transversal dimension of the stem 5 are between them proportional in such a way as to house a plug 2 of standard type or "Fischer" on the central portion 10, in particular Fischer plugs of standard dimensions variable within commercial limits, for example Fischer plugs of between 4 mm and 10 mm. Moreover, the above-mentioned dimensions must be proportional in such a way that the maximum transversal dimension of the perforating tip 4 is at least equal to the maximum transversal dimension of the plug 2 of commercial type.

Figures 2a-2e illustrate a second embodiment of the device according to the invention.

This embodiment differs from the embodiment of Figures 1 a-1 e in the shape of the perforating tip 4 which has, in addition, ribs 4a, preferably axial, positioned on its outer tapered surface (conical). Also in this case, the perforating tip 4 is configured in such a way as to be pushed to penetrate in the wall 3 by pushing or axial percussion without any type of rotational movement. However, the surface equipped with ribs 4a is made in such a way as to more easily allow the axial pushing or percussion and the ribs 4a are made in such a way as not to have the prior art devices such as helical threads for removal of chippings or dust, which are typical of the perforating with drill. In this way, once inserted in the wall the perforating tip 4 is more subject to rotational locking in the wall.

This embodiment is more preferably (but not necessarily) associated with a threaded connection or a bayonet coupling between the perforating tip 4 and the stem 5.

Moreover, in this embodiment the gripping portion 9 may have (alternatively to the solutions described above) an end equipped with a slot which can be engaged with a screwdriver for rotating the stem 5 in order to unscrew the stem 5 from the perforating tip 4.

More generally speaking, in this embodiment it is more preferably (but in any case not necessary) that the stem 5 has gripping means 9b of the rotational type at the proximal end 8. More specifically, the gripping means 9b of rotational type allow the user to rotate the stem 5 relative to the perforating tip 4 when the latter is stably inserted in the wall 3 and anchored to it by means of the ribs 4a.

This invention further relates to a method for installing the plug 2 in the wall 3 comprising the steps which are described below.

Initially, the plug 2 is fitted on the stem 5 inserting the stem 5 in the central hole of the plug 2. This step is performed in such a way that the plug 2 is fitted on the central portion 10 of the stem 5.

The step of applying the plug 2 on the stem 5 is performed preferably (but not necessarily) before the step of connecting the distal end 7 of the stem 5 to the perforating tip 4.

Subsequently, the perforating tip 4 is made to penetrate in the wall 3. In this step the device 1 is positioned with the longitudinal axis 6 perpendicular to the wall 3. The perforating tip 4 is pressed by a constant thrust or pulse exerted on the proximal end 8 by the user, for example with a hammer or in any case with a means which does not require rotations of the stem 5 and/or the perforating tip 4. The thrust is exerted until obtaining a desired penetration of the perforating tip 4 in the wall 3, corresponding to a desired insertion depth of the plug 2 in the wall 3.

Subsequently, after the tip 4 has been inserted, there is the step of separating the stem 5 from the perforating tip 4 by action on the proximal end 8 of the stem 5.

In the first embodiment this separation is performed by the user who pulls the stem 5 towards him/herself, by using the gripping portion 9, causing the separation from the perforating tip 4. This action may be performed manually or by means of any tool which allows the gripping portion 9 to be held.

In the second embodiment the separation occurs when the user, either manually or by, for example, a screwdriver, uses the gripping means in the proximal portion 8 for rotating the stem 5 relative to the perforating tip 4. Lastly, there is the step of pulling out the stem 5 leaving the plug 2 engaged in the wall 3. Following this action, the perforating tip 4 remains in the wall 3 together with the plug 2, but the stem 5 may be re-used for installing a new plug 2.

The device 1 and the method described above allow the plug 2 to be installed in the wall 3 overcoming the drawbacks of the prior art. Advantageously, the device 1 and the method allow tools such as drills not to be used, also avoiding the creation of dirt and dust caused by the use of these tools. Still more advantageously, the applicability of the device is very simple and allows the use just of a hammer, if not even, with regard to the less resistant surfaces, the total absence of tools, using just a manual thrust.

The device 1 described above is conceived for plugs 2 of standard type but the components may be made in such a way that plugs 2 of different sizes may be installed.




 
Previous Patent: UTILITY CART

Next Patent: SECURITY BAGS