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Title:
CONTROL DEVICE FOR A FLUID SUPPLY HOSE
Document Type and Number:
WIPO Patent Application WO/2019/082116
Kind Code:
A1
Abstract:
A control device (101) suitable for being coupled with a hose (102) for supplying a fluid (F), such as compressed air, comprises a block shaped body (3) provided with a coupling part (Pc) configured for engaging a portion (104) of the hose (102). A retaining seat (5) configured for engaging a flexible segment (106) of the hose in an operative position (C) to close the supply of the fluid (F) is made in the block body (3). The retaining seat (5) is shaped for imposing and maintaining the flexible segment (106) of the supply hose in a folded throttling configuration that stops the passage of the fluid (F).

Inventors:
CUCCHI, Cesare (Via Genova 4/6, Bussero, 20060, IT)
Application Number:
IB2018/058330
Publication Date:
May 02, 2019
Filing Date:
October 25, 2018
Export Citation:
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Assignee:
CUCCHI GIOVANNI & C. S.R.L. (Via Genova 4/6, Bussero, 20060, IT)
International Classes:
F16K7/06; B05B1/30; B05B1/00; B05B15/63
Foreign References:
US3103335A1963-09-10
US0470776A1892-03-15
CN103550920A2014-02-05
Attorney, Agent or Firm:
CANDITO, Rocco et al. (LUPPI INTELLECTUAL PROPERTY S.R.L, Via De Amicis 25, Milan, 20123, IT)
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Claims:
CLAIMS

1. Control device suitable for being coupled with a hose (2; 102) for supplying a fluid (F), such as compressed air, comprising:

— a block shaped body (3) provided with a coupling part (Pc) configured for engaging a portion (4; 104) of said hose (2; 102),

— a retaining seat (5) being made in said block shaped body (3) that is shaped for engaging a hose segment (6; 106) in an operative position (C) to closure the supply of the fluid (F), in which

— said retaining seat (5) is shaped for imposing on and maintaining said supply hose segment (6; 106) in a folded throttling configuration that stops the passage of said fluid (F), and in which

— said coupling part (Pc) comprises a through opening (7), longitudinally made in said block shaped body (3) and comprises a quick-fitting connection (10) for rapidly connecting said block shaped body (3) to an end portion (104) of said fluid supply hose (102), said quick-fitting connection (10) being fitted to an end of said through opening (7), said supply hose segment (106) being further fitted to an opposite end of said through opening (7) by a connecting element (12). 2. Device according to claim 1, wherein said through opening (7) is conformed with a passage section sized to receive and be traversed by said portion (4) of said hose (2), said supply hose segment (6) is part of said supply hose (2) and is the continuation of said portion (4) of said hose. 3. Control device according to any one of the preceding claims, wherein said retaining seat (5) and said coupling part (Pc) are mutually positioned to impose on, and maintain said supply hose segment (6; 106) in a folded configuration so as to generate a throttling zone (Tz) that stops the passage of said fluid (F), in which said through insertion opening (7) extends longitudinally from a first end (El) to a second end (E2) of said block shaped body (3), and in which said through insertion opening (7) is made along a first longitudinal half (HI) of said block shaped body (3).

4. Control device according to claim 3, wherein said retaining seat (5) extends longitudinally from said second end (E2) of said block shaped body (3) and along a second longitudinal half (H2) of said block shaped body (3) adjacent to said first longitudinal half (HI), between said retaining seat (5) and said through insertion opening (7) a longitudinal median plane (X) of said block shaped body (3) being defined and interposed.

5. Control device according to claim 4, wherein said retaining seat (5) and said through insertion opening (7) extend parallel to one another on opposite sides of said longitudinal median plane (X).

6. Control device according to any one of the preceding claims, wherein said block shaped body (3) has a parallelpipedon shape that extends along a longitudinal axis (L), and comprises longitudinal faces (FLI, FL2, FL3, FL4) that extend parallel to said longitudinal axis (L), and two opposite end faces (FTi, FT2) that extend transversely to said longitudinal axis (L), in which said retaining seat (5) is open on at least one face (FTi) of said opposite transverse end faces (FTi , F^) and on a longitudinal face (FL3) to receive and retain said supply hose segment (6; 106) in a folded position.

7. Control device according to any preceding claim, wherein said retaining seat (5) is bounded by a partially cylindrical housing surface (S), and a curved edge portion (8) is provided configured for retaining in said retaining seat (5) said supply hose segment (6; 106) in an elastically bent configuration, and preventing said supply hose segment (6; 106) from disengaging said seat (5) through the effect of the spring- back.

8. Control device according to any one of the preceding claims, wherein said supply hose segment (106) is part of said control device (101), is distinct and separate from said fluid supply hose (102), comprises an end terminal (120) for exiting of the fluid, in particular compressed air, said supply hose segment (106) having a length comprised between about 15 cm and about 30 cm.

9. Control device according to any one of the preceding claims, wherein said quick- fitting connection (10) and said connecting element (12) are mutually axially aligned along an axis (Y) of said through opening (7), and are internally hollow to allow the passage of the fluid, such as compressed air, from the supply hose (102) and through said supply hose segment (106).

10. Device according to any one of the preceding claims, wherein said supply hose segment (106) is made of a material chosen from a group comprising: polyurethane, polyamide, polyethylene.

11. Device according to any one of the preceding claims, wherein said block shaped body (3) has maximum length dimensions of less than about 10 cm, maximum height dimensions of less than about 5 cm, a thickness of less than about 3 cm, is made of plastics and is economically shaped to enable easy grasping.

Description:
CONTROL DEVICE FOR AFLUID SUPPLY HOSE

BACKGROUND OF THE INVENTION The present invention relates to a control device, in the form of a block, suitable for being coupled with a supply hose and configured for controlling the flow of a fluid exiting such a supply hose, in particular to enable/disable the supply of such fluid, in particular compressed air. PRIOR ART

The use of blowing guns for supplying compressed air is known in engineering workshops, factories, industrial plants and in general in all contexts in which the use of compressed air is required, for example where it is necessary to direct a flow of compressed air for example to remove dust, wastes, or chippings from a work zone, or to dry or cool set zones.

Although guns for blowing air are widely used, they are not free of limits and drawbacks. Firstly, it must be pointed out that such devices are structurally rather complex and costly. Further, it is not rare for jams or malfunctions to occur in current guns, for example because of the blocking of the internal mechanism or obstruction of the orifice, and pressure losses are also pointed out that are due to the complex path that the air has to follow between the internal components of the same gun. Therefore ample room for improving such devices still exists.

OBJECTS OF THE INVENTION

One object of the invention is to improve current devices for blowing a fluid, in particular compressed air.

In particular, one object is to provide a device extremely simplified by the structural point of view, thus significantly cheap but equally reliable, versatile and effective in operation.

Another object is to provide a device having a very reduced weight and very compact dimensions.

SHORT DESCRIPTION OF THE INVENTION

These and further objects and advantages are achievable by a control device as defined in the attached claims.

SHORT DESCRIPTION OF THE DRAWINGS

The features and advantages of the device according to the invention will be more apparent from the following description, with reference to the drawings, in which:

Figure 1 shows schematically a first embodiment of the of a control device according to the invention;

Figure 2 shows the device of figure 1 in a configuration coupled with a hose for supplying air;

Figures 3 and 4 show the device, coupled with the supply hose, respectively in a configuration in which the compressed air can freely exit the supply hose, and in a throttling configuration, in which the exit of the air is prevented;

Figure 5 shows a second embodiment of the control device according to the invention;

Figure 6 shows the device of figure 5 coupled with the supply hose and in a closed configuration of the flow of compressed air.

DETAILED DESCRIPTION OF THE INVENTION

With reference to the attached figures, a control device is disclosed that is suitable for being coupled with a hose (2; 102) for supply a fluid F, such as compressed air. The supply hose for the compressed air is, at one end, connected to an apparatus for generating and distributing compressed air, such as an air-compressing machine. In Figures 1 to 4 a structurally more simplified first embodiment of the control device 1 is shown.

In this first embodiment, the device 1 consists only of a block shaped body 3 in which appropriate openings or holes are made to receive respective portions of the hose 2, as set out in detail below.

More precisely, the block shaped body 3, which in the embodiment shown in the figures, has a simple parallelpipedon shape, extends along a longitudinal axis L and has four longitudinal faces (FLI, FL 2 , FL 3 , FL4) that extend parallel to said longitudinal axis L, and two opposite transverse end faces (F T i, F-n) that extend transversely to the longitudinal axis L.

The block shaped body 3 has maximum length dimensions (in a longitudinal direction) of less than about 10 cm, maximum height dimensions of less than about 5 cm and a thickness less than about 3 cm. The dimensions and the shape of the block body 3 are such as to make the block body 3 ergonomic, light and easy to hold.

The block body 3 is made of a light and resistant material, such as a plastic material.

The dimensions and the shape of the block body 3 are such as to make the block body 3 ergonomic, light and easily graspable.

The block body 3 comprises a coupling part Pc shaped for engaging a portion 4 of the hose 2. In this embodiment, the coupling part Pc is defined by a through opening 7. The through opening 7 is obtained longitudinally in the block body 3 and traverses the block body 3 from the first end El to a second end E2 of the latter. The through insertion opening 7 is obtained along a first longitudinal half HI of the block body 3. The through opening 7 is an insertion opening having a passage section sized for receiving and being crossed by the hose 2, in particular by the portion 4 of this hose 2. The through opening 7 can be a hole of substantially cylindrical shape, with a circular cross section.

In the block body 3 a retaining seat 5 is obtained that is configured for engaging a flexible supply hose segment 6 in an operative position C (shown in Figure 4) to stop the supply of the fluid F. In this first embodiment of a control device 1, the aforesaid flexible segment 6 that engages the retaining seat 5 is thus part of the some supply hose 2, and extends continuously from the aforesaid portion 4 of the hose. The retaining seat 5 is shaped for imposing on and maintaining the flexible supply hose segment 6 in a folded throttling configuration that stops the passage of said fluid F.

More precisely, the retaining seat 5 extends longitudinally from the second end E2 of the block body 3 at least for a fraction, in particular over the entire longitudinal length of the block body 3.

The retaining seat 5 extends along a second longitudinal half H2 of the block body 3 adjacent to the aforesaid first longitudinal half HI along which the insertion opening 7 is obtained.

The retaining seat 5 is open on at least one of the two opposite transverse end faces F T i, F T 2, in particular at least on the face F T i, and on a longitudinal face F L3 to receive and retain the flexible hose segment 6 in a folded position. In particular, the retaining seat 5 is accessible from a smaller longitudinal face F L3 , but, in one version, can be accessible from a larger longitudinal face F L (face F L2 ; F^).

Between the retaining seat 5 and the through insertion opening 7, a longitudinal median plane X of the block body 3 is defined and interposed.

The retaining seat 5 and the through insertion opening 7 thus extend parallel to one another on opposite sides of the aforesaid longitudinal median plane X. The retaining seat 5 is bounded internally by a housing surface S, for example partially cylindrical, and a curved edge portion 8 is provided that is configured for retaining internally the flexible segment 6 of the supply hose in an elastically curved configuration, and preventing the flexible segment 6 of the supply hose from disengaging from the seat 5 through the effect of the elastic return thereof.

The length of the flexible segment 6 that protrudes from the insertion opening 7, combined with the mechanical features of semi-stiffness and elasticity of the material from which the pipe 2 is made, makes it possible to obtain a throttling zone T z of the flexible segment 6 that acts to stop the passage or interrupt the flow of the compressed air F.

More precisely, the length of the flexible segment 6 is comprised between about 15 cm and about 30 cm. The material of the hose 2, which in this embodiment of the device 1 is the material of the flexible segment 6, is chosen from a group comprising: polyurethane, polyamide, polyethylene. This material has characteristic advantages of good elasticity and mechanical resistance.

Figures 3 and 4 show the operation of the control device 1.

In order to be able to operate, the block body 3 is first placed on the hose 2, such that a portion 4 thereof is received inside the insertion opening 7, and another portion, or flexible segment 6, exits, at the end E2, from the insertion opening 7 by a suitable amount, comprised between about 15 and about 30 cm.

When the pipe 2 is not bent and is not thus imposed in a folded configuration that generates throttling, the fluid F can freely exit from the end terminal 20. An operator can then easily grasp the block body 3 and direct at will the flow of compressed air F to a work zone to be treated.

When interruption of the supply of the air is requested, the operator can easily fold the flexible segment 6 to position the same flexible segment 6 inside the retaining seat 5 in which it is firmly hooked, as shown in Figure 4. The flexible segment 6 is retained owing to elastic compression and/or owing to the curved edge portion 8, with undercut, of the retaining seat 5. The loop that is generated through the bending effect of the flexible segment 6 can also be advantageously exploited as an element for hanging the device 1, coupled with the hose 2, from a hook shaped support fixed for example to a wall or to a machine. With reference to figures 5 and 6, a second embodiment of the control device will now be disclosed, indicated by the reference number 101. Parts that are identical or common to the first embodiment are indicated by the same reference number or increased by 100. The block shaped body 3 of this embodiment is identically configured to the embodiment already disclosed above, but is provided with some additional features. The second embodiment of the control device 101 is configured for being used with supply hoses 102 the material of which does not have the mechanical features of elasticity, deformability and/or sectional dimensions that are such as to enable folding thereof and throttling to be achieved with consequent interruption of the flow of fluid F.

The control device 102 can thus be coupled, removably, with coil type hoses, made of PVC, or rubberized canvas hoses, or hoses with metal meshes, or metal type hoses also, etc.

In the control device 101, the coupling part Pc comprises a quick- fitting connection 10 for quick and disengageable connection of the block body 3 to the end 104 of a supply hose 102 for the pressurized air, this pipe being provided with a suitable connection fitting 13. The quick-fitting connection 10 is assembled, for example screwed, to an end of the through opening 7, in this case to the end El of the block body 3. The control device 101 comprises, at the end of the through opening 7 opposite to the quick-fitting connection 10, a supply hose segment 106 that is connected, by a connecting element 12, to the block body 3. In particular, the connecting element 12 is screwed to an end zone of the through opening 7.

The quick-fitting connection 10 and the connecting element 12 are mutually axially aligned along an axis Y of the through opening 7, and are internally hollow to permit the passage of the fluid, such as compressed air, from the supply hose 102 and through the flexible segment 106 of the device 101.

In this embodiment, the supply hose segment 106 is thus part of the device 101, is distinct and separate from the fluid supply hose 102. If the hose 102 cannot thus be folded to throttle the passage of air (because it is for example a coil hose or metal type or another type as indicated above), it is owing to the presence of the supply hose segment 106, being part of the device 101 itself, that this throttling effect can be successfully achieved. The supply hose segment 106 has a length comprised between about 15 cm and about 30 cm. The material of the supply hose segment 106 is a material chosen from a group comprising: polyurethane, polyamide, polyethylene, that have the required features of elasticity and mechanical resistance.

The operation of the device 101 is identical to what has already been disclosed for the first embodiment illustrated above, from which it differs by the way of coupling with the supply hose 102 and by the presence of its own hose segment 106, which is distinct and separate from the aforesaid supply hose 102.

Owing to the aforesaid configuration, the overall dimensions and weight of the device 1 or 101 are advantageously minimized, giving the latter particular handleability, versatility and ease of use. From what has been disclosed and illustrated, it is clear that the device 1 or 101 according to the invention successfully achieves the objects set out above.

The essential configuration of the device 1 consists of just one piece consisting of the block body 3, in which the through opening 7 and the retaining seat are made.

In the second embodiment, the device 101 also comprises a quick-fitting connection 10, to be removably and easily couplable with any supply hose 102, and a flexible conduit segment 106 connected by a connecting element 12 to the aforesaid block body 3.

It evident the great cheapness and reliability that the structural simplification of the device 1 or 101 entails. The ease of adaptation to various types of hose, the absence of jams and faults that on the other hand occur in known guns, the lightness and ease of use make the proposed control device 1, 101 a highly versatile solution.

The device is also significantly cheap and also operationally effective and has a very light weight and dimensions.

Any element that is part of the device according to the invention can be replaced with other elements that are equivalent in structural and functional terms and the materials, inasmuch as they are compatible with the specific use for which they are intended, can be chosen appropriately according to the required requirements and in relation to the available prior art.

It is possible to configure and size the device 1,101 according to specific needs and applications, with possible variants and/or adjustments to what is disclosed and illustrated above in the attached drawings without thereby departing from the claimed scope of the invention.