EP3595846B1 - Telescopic maneuvering wrench for facilitating anchoring of sanitary fixtures to a wall - Google Patents
Telescopic maneuvering wrench for facilitating anchoring of sanitary fixtures to a wall Download PDFInfo
- Publication number
- EP3595846B1 EP3595846B1 EP18717506.2A EP18717506A EP3595846B1 EP 3595846 B1 EP3595846 B1 EP 3595846B1 EP 18717506 A EP18717506 A EP 18717506A EP 3595846 B1 EP3595846 B1 EP 3595846B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wrench
- straight
- allen wrench
- allen
- snap
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004873 anchoring Methods 0.000 title claims description 9
- 238000010168 coupling process Methods 0.000 claims description 10
- 238000005859 coupling reaction Methods 0.000 claims description 10
- 230000008878 coupling Effects 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 2
- 238000004026 adhesive bonding Methods 0.000 claims 1
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 241000282693 Cercopithecidae Species 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/0007—Connections or joints between tool parts
- B25B23/0021—Prolongations interposed between handle and tool
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B13/00—Spanners; Wrenches
- B25B13/48—Spanners; Wrenches for special purposes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B13/00—Spanners; Wrenches
- B25B13/48—Spanners; Wrenches for special purposes
- B25B13/481—Spanners; Wrenches for special purposes for operating in areas having limited access
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B13/00—Spanners; Wrenches
- B25B13/48—Spanners; Wrenches for special purposes
- B25B13/50—Spanners; Wrenches for special purposes for operating on work of special profile, e.g. pipes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B15/00—Screwdrivers
- B25B15/001—Screwdrivers characterised by material or shape of the tool bit
- B25B15/004—Screwdrivers characterised by material or shape of the tool bit characterised by cross-section
- B25B15/008—Allen-type keys
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
- E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
- E03C1/12—Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
- E03C1/32—Holders or supports for basins
- E03C1/322—Holders or supports for basins connected to the wall only
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
- E03D11/00—Other component parts of water-closets, e.g. noise-reducing means in the flushing system, flushing pipes mounted in the bowl, seals for the bowl outlet, devices preventing overflow of the bowl contents; devices forming a water seal in the bowl after flushing, devices eliminating obstructions in the bowl outlet or preventing backflow of water and excrements from the waterpipe
- E03D11/13—Parts or details of bowls; Special adaptations of pipe joints or couplings for use with bowls, e.g. provisions in bowl construction preventing backflow of waste-water from the bowl in the flushing pipe or cistern, provisions for a secondary flushing, for noise-reducing
- E03D11/14—Means for connecting the bowl to the wall, e.g. to a wall outlet
Definitions
- the present invention relates to the field of systems for fixing wall-hung sanitary fixtures; more specifically it relates to a telescopic maneuvering wrench for facilitating anchoring thereof to a wall, according to the preamble of claim 1.
- the access to the fixing system is limited and not always visible by the plumber.
- the access is from the bottom and it is not possible to see what is done, and the operation is therefore difficult.
- the current art systems mainly used to facilitate the anchoring of a wall-hung sanitary fixture to a wall are:
- a torque driver for headless threaded compression fasteners is disclosed in WO2016/057013 .
- US6038946 discloses an axially repositionable adapter for use with a ratchet assembly.
- US2679778 discloses a flexible rotary tool
- An object of the present invention is to overcome at least partially the drawbacks of the above mentioned current art, providing a universal maneuvering wrench suitable to adapt to all types of wall-hung sanitary fixtures.
- a further object of the present invention is to provide the possibility of performing a visible maneuvering according to the principle described hereinafter, thus facilitating the installation operations.
- a telescopic maneuvering wrench according to claim 1 is provided to facilitate the anchoring of a wall-hung sanitary fixture, comprising a straight Allen wrench, a recess provided on the side surface of the straight Allen wrench and a connecting element between the straight Allen wrench and a screw element.
- the maneuvering wrench further comprises a hollow body provided with snap-fit elements for snap-coupling to the straight Allen wrench, and a longitudinal cavity into which the straight Allen wrench is inserted.
- the present invention relates to a telescopic maneuvering wrench indicated as a whole with number (100) to facilitate the anchoring of a wall-hung sanitary fixture, the wrench being comprised of the elements described below.
- the telescopic maneuvering wrench (100) comprises a straight Allen wrench (4) with hexagonal head.
- the telescopic maneuvering wrench (100) further comprises a ring (5), also visible in the detail of Fig. 1A , inserted in a first recess or groove (16) provided on the top of the straight Allen wrench (4).
- a second recess (6) also visible in the detail of Fig. 1B , is provided on the side surface of the straight Allen wrench (4).
- the telescopic maneuvering wrench (100) further comprises a cylindrical connecting element (7) between the straight Allen wrench (4) and a screw element (3), for example a hex socket set screw.
- the connecting element (7) is similar to a screw cap with a hole (12) on the base.
- the hole (12) has a diameter comprised between the diameter of the circumference ci rcumscri bed to the straight Allen wrench (4) with hexagonal head and that of the ring (5), shown in the detail of Figure 1C , illustrating the cross-section of the connecting element (7).
- An annular surface (13) comprised between the hole (12) and an internally threaded wall (14) of the connecting element (7) forms a radial abutment for the ring (5).
- the telescopic maneuvering wrench (100) further comprises a hollow prismatic body, having a hexagonal cross-section, for instance, hereinafter briefly referred to as "hollow hexagonal prism” and indicated with (8).
- the hollow hexagonal prism (8) is provided with two portions in the form of elastic appendices which form snap or snap-fit elements indicated with (9).
- the snap-fit elements (9) may comprise teeth (9A) able to snap fit in the recess (6) provided on the straight Allen wrench (4) as described below.
- the telescopic maneuvering wrench (100) can also comprise an optional L-shaped Allen wrench (10).
- the L-shaped Allen wrench (10) can be omitted and a different tool can be used instead of it, for example a monkey wrench, a ratchet wrench, a socket wrench or other equivalent tool, able to co-act with the hollow hexagonal prism (8) for the purposes explained below.
- the recess (6) can be provided with a specific geometry: in cross-section the profile is represented by an angle where a generatrix is orthogonal to the axis of the straight wrench (4) and the other generatrix has an inclination, with respect to the previous one, by the same angle of the teeth (9A) of the snap-fit elements (9) of the hollow hexagonal prism(8).
- the recess is defined by a substantially flat annular surface, orthogonal to the axis of the straight Allen wrench (4), and by a truncated-conical surface. The truncated-conical surface is directed so that the recess (6) has a depth that gradually decreases towards the end of the straight Allen wrench (4) where the first recess or annular nip (16) is formed.
- the ring (5) can be an elastic ring made of metal or plastic.
- the ring (5) may be a split pin, or any element capable of increasing the cross-section with respect to that of the straight Allen wrench (4).
- the ring (5) forms a shoulder projecting from the outer hexagonal prismatic surface of the straight Allen wrench (4).
- the connecti ng element (7) between the screw element (3) and the straight Allen wrench (4) is a plastic cap with an internal thread corresponding to that of said screw element (3), i.e. suitable to be screwed onto the screw element (3).
- the hole (12) of the connecting element (7) allows the passage of the straight Allen wrench (4).
- the components of the telescopic maneuveri ng wrench (100) descri bed above can be assembled as follows.
- the screw element (3) or hex socket set screw, is inserted on the hexagonal head (4A) of the straight Allen wrench (4).
- the upper end (in Fig.1 ) of the straight Allen wrench (4) is inserted into the hexagonal recess of the screw element (3).
- the connecting element (7) is inserted from the bottom upwards around the straight Allen wrench (4), so that the ring (5) abuts on the surface (13) and the internal thread of the wall 14 remains free and not engaged by the straight Allen wrench (4).
- the size of the hexagonal cavity of the prism (8) depends on the size of the straight wrench (4).
- the coupling between the two elements must be characterized by longitudinal interference along the larger size of the wrench (4).
- the straight Allen wrench (4) is inserted into the hollow hexagonal prism (8) so that the snap-fit elements (9) face the connecting element (7).
- the straight Allen wrench (4) is inserted in the hollow cavity of the hollow hexagonal prism (8) with the end (4B) thereof opposite to the end or head (4A) constrained to the screw element (3).
- the insertion is performed from the side of the hollow hexagonal prism (8) where the snap-fit elements (9) are provided.
- the end (4B) is inserted into the longitudinal cavity of the hollow hexagonal prism (8) by deforming the snap-fit elements (9) radially outwardly, since the teeth (9A) of the snap-fit elements reduce the passage cross-section of the longitudinal cavity of the hollow hexagonal prism (8).
- the deformation is facilitated by the fact that the teeth (9A) have distal surfaces which are inclined towards the axis of the hollow hexagonal prism (8).
- the reciprocal sliding between the hollow hexagonal prism (8) and the straight Allen wrench (4) can continue until the straight Allen wrench (4) is almost fully retracted into the hollow hexagonal prism (8).
- This is possible by applying a force sufficient to elastically deform the snap-fit elements (9) in radial direction outwardly, by making the inclined surfaces of the teeth (9A) slide along the portion of truncated-conical surface defining the second recess (6).
- the teeth (9A) exit from the second recess (6) and slide on the prismatic surface of the straight Allen wrench (4) towards the connecti ng element (7) even up to abut against it.
- the straight Allen wrench (4) can be removed, but not completely.
- the teeth (9A) of the snap-fit elements (9) enter the second recess (6) again, the flat annular surface of the second recess (6), orthogonal to the axis of the straight Allen wrench (4), provides an abutment for the teeth (9A) of the snap-fit elements (9).
- the geometric shape of the teeth (9A) and of the second recess (6) is such that it does not exert a radial outward deformation of the teeth (9A), which therefore prevent the straight Allen wrench (4) from being further extracted from the hollow hexagonal prism (8).
- the telescopic maneuvering wrench of the present invention is therefore a length-adjustable wrench.
- the connecting element (7) is provided with wings (11) having the function of facilitating the operator in screwing said connecting element (7) onto the screw element (3).
- the telescopic maneuvering wrench (100) can be used by acting thereon using the L-shaped Allen wrench (10), inserting this latter inside the hollow hexagonal prism (8).
- the L-shaped Allen wrench (10) can be replaced by a conventional wrench or by a ratchet wrench or a socket wrench or any other equivalent tool.
- the through cavity of the hollow hexagonal prism (8) has a hexagonal cross-section, so as to couple with the straight Allen wrench (4), which can be di rectly coupled to the L-shaped Allen wrench (10).
- the outer surface of the hollow hexagonal prism (8) has preferably a hexagonal prismatic cross-section for coupling to a wrench or any tool other than the L-shaped Allen wrench (10).
- the hollow body (8) may also have a non-hexagonal prismatic shape, i.e. with an outer surface of non-hexagonal cross-section, but preferably at least partially prismatic, to allow the gripping by a maneuvering tool acting on the outside of the hollow body (8).
- the hollow body (8) may be an elongated and inside hollow body, with a cavity of hexagonal cross-section or in any case such as to be able to couple with an Allen wrench, but with an external surface of any shape, even of circular cross-section.
- the operation is carried out preferably by acting with a tool (L-shaped Allen wrench (10) for example) which couples to the through longitudinal cavity and not to the outer surface of the hollow body (8).
- Figs. 2 and 3 show two arrangements of the telescopic maneuvering wrench (100) in two positions corresponding to two different lengths that can be obtained by telescopically extending the components (4) and (8).
- the telescopic maneuvering wrench is shown in combination with a device for mounting a wall-hung sanitary fixture, the device being indicated as a whole with number (20).
- the mounting device (20) shown in the attached figures is known per se and it is indicated just by way of example.
- telescopic maneuvering wrench illustrated herein can be used in combination with several different systems and devices for mounting wall-hung sanitary fixtures equipped with a screw element (3), preferably a headless one, associable with the telescopic maneuvering wrench (100).
- the device (20) comprises a clamping cone (21) and a sleeve (22).
- the device (20) may be designed as described for example in DE202009014171 or in DE102013112005 , the content whereof is incorporated in the present description.
- the device (20) is fixed to a sanitary fixture (30) to hang to a wall, as shown in F ig.5.
- the sleeve (22) has a threaded radial hole in which the screw element (3) is screwed, which co-acts with a wall-mounted pin (not shown), which is inserted axially through the device (20) and is provided with an elongated slot.
- the telescopic maneuvering wrench (100) described above is engaged with the device (20) once this latter has been fixed to the sanitary fixture (30) simply by screwing the screw element (3) into the radial threaded hole of the sleeve (22).
- the fact that the telescopic maneuvering wrench can lengthen and shorten telescopically allows the operator to arrange the distal end of the hollow hexagonal prism (8) in a position that is easily accessible from outside the sanitary fixture (30), asshown in Fig.5 .
- usi ng atool for example the L-shaped Allen wrench (4), it is possibleto turn the telescopic maneuvering wrench easily.
- the L-shaped Allen wrench (10) can be removed and the telescopic maneuvering wrench (100) can be slightly shortened so as to remain integrally and invisibly housed inside a cavity (31) of the sanitary fixture (30), as schematically shown in Fig.4 .
- the telescopic maneuvering wrench (100) is available for subsequently disassembling the sanitary fixture (30), but is substantially not visible and not accessible by the user.
- the essential elements for achieving the object of the present invention are: the hollow body (8) with the snap-fit elements (9), the straight Allen wrench (4) with the recess (6) and a system for fixing the screw element (3) to the head (4A) of the straight Allen wrench (4).
- a complete kit for mounting a sanitary fixture (30) shall comprise, in addition to the aforementioned components of the telescopic maneuvering wrench (100), also a mounting device (20) and the screw element (3).
- Fig.7 is an exploded view of this set of essential components, whose assembly occurs as described above.
- Figs. 8(A), 8(B) and 8(C) schematically show three ways for fixing the screw element (3) to the straight Allen wrench (4). More particularly, Fig. 8(A) schematically shows a system of fixing by means of radial plastic deformation of the screw element (3) against the straight Allen wrench (4). The radial necking, schematized through arrows (F), can cause a permanent deformation of the recess of the screw element (3) against the head (4A) of the straight Allen wrench (4), possibly causing a coupling with the recess (5), if any.
- Fig. 8(B) schematically shows a way for coupling the screw element (3) and the straight Allen wrench (4) by means of adhesive (C), while in Fig. 8(C) the coupling is through welding (S).
- the snap-fit elements (9) are made in the form of two substantially symmetrical opposite elastic tabs provided with two teeth (9A), in other embodiments, the snap coupling can be obtained with a different number of tabs and/or with tabs of different shape.
- Figs. 9(A)-9(D) show four alternatives, each in front view and in an axonometric view, of possible configurations of the snap-fit elements, always indicated with (9) and provided with teeth (9A).
- the embodiment of Fig. 9(C) is that already described with reference to Fig.1 .
- the snap-fit elements 9 can be formed by notches that start from the distal surface of the prism (9) and extend parallel to the longitudinal direction thereof, forming the tabs 9.
- the number (8C) indicates the longitudinal, or axial, through cavity of the hollow hexagonal prism (8).
- the designation of the body (8) as a "hexagonal" prism refers in particular to the hexagonal shape of the longitudinal cavity (8C) which extends along the entire length of the hollow hexagonal prism (8).
- the hexagonal shape is particularly advantageous as it allows using standard bars of hexagonal cross-section for producing the straight Allen wrenches (4), and therefore screw elements (3) constituted by normal hex socket set screws, in combination with L-shaped Allen wrenches (10), if necessary.
- a prismatic shape other than the hexagonal one is also possible, provided that it is possible to have a torsional fit-coupling between the straight Allen wrench (4) and the hollow prism (8), as well as between the straight Allen wrench (4) and the screw element (3).
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- Mutual Connection Of Rods And Tubes (AREA)
Description
- The present invention relates to the field of systems for fixing wall-hung sanitary fixtures; more specifically it relates to a telescopic maneuvering wrench for facilitating anchoring thereof to a wall, according to the preamble of
claim 1. - It is well known that the operation of systems for fixing wall-hung sanitary fixtures and the like is ensured by the use of a maneuvering wrench that, by facilitating the forward movement of a screw or dowel element, allows the anchoring of the wall-hung element to a wall.
- Typically, the access to the fixing system is limited and not always visible by the plumber. For example, in the case of wall-hung sanitary fixtures the access is from the bottom and it is not possible to see what is done, and the operation is therefore difficult.
- The current art systems mainly used to facilitate the anchoring of a wall-hung sanitary fixture to a wall are:
- a plastic tube attached to the fixing system which, by means of a helical torsion spring, is in close connection with the screw which provides the anchorage. The insertion of the maneuvering wrench, which is, in this case, a hex key or Allen wrench, is facilitated by the presence of said small tube that acts as a guide. In fact, inserting the maneuvering wrench inside it, the wrench will be surely positioned in the hexagonal head of the screw, thus ensuri ng a perfect screwing of the same screw. The use of the tube is disadvantageous when the sanitary fixture to be hung to the wall has a very high casing and is not far from the floor. In this case, the maneuvering space will be very limited, due to the small distance from the ground and it will be therefore difficult to insert the wrench into the guide tube. The aforesaid anchoring maneuver is often impossible or, at best, long and difficult.
- A maneuvering wrench, disclosed in
WO2013167186 , consisting of a hexagonal Allen wrench directly attached to the screw element as a single body. In this case, the two pieces are already coupled together and it is not necessary for the plumber to insert the maneuvering wrench into the hexagonal head of the screw. The disadvantage of this known system is that, working with sanitary fixtures of different heights, it would be necessary to have maneuvering wrenches of different lengths available and therefore the wrench should be cut each time according to need. In this case again the installation process is longer and less easy. - A system, disclosed in
DE202010009280 , able to fit on a clamping sleeve and on which an Allen wrench is inserted. - The drawback of this system is that, similarly to what described above, in the case of sanitary fixtures of different heights, a wrench of the same height as the sanitary fixture would be required and therefore the fixing kits using systems of this type are not universal.
- A common disadvantage to all the documents disclosed above is that none of the systems used allows the plumber to see what he/she is doing.
- A torque driver for headless threaded compression fasteners is disclosed in
WO2016/057013 .US6038946 discloses an axially repositionable adapter for use with a ratchet assembly.US2679778 discloses a flexible rotary tool - An extendible wrench according to the preamble of
claim 1 is disclosed inUS2012/0180605 . - An object of the present invention is to overcome at least partially the drawbacks of the above mentioned current art, providing a universal maneuvering wrench suitable to adapt to all types of wall-hung sanitary fixtures.
- A further object of the present invention is to provide the possibility of performing a visible maneuvering according to the principle described hereinafter, thus facilitating the installation operations.
- According to one aspect, a telescopic maneuvering wrench according to
claim 1 is provided to facilitate the anchoring of a wall-hung sanitary fixture, comprising a straight Allen wrench, a recess provided on the side surface of the straight Allen wrench and a connecting element between the straight Allen wrench and a screw element. The maneuvering wrench further comprises a hollow body provided with snap-fit elements for snap-coupling to the straight Allen wrench, and a longitudinal cavity into which the straight Allen wrench is inserted. - Further features and embodiments are set forth in the attached claims, which form an integral part of the present description.
- Further features and advantages of the invention will be apparent from the description below of a preferred but not exclusive embodiment of a telescopic maneuvering wrench, illustrated by way of non-limiting example in the attached drawings.
- The invention will be better understood by following the description
-
Fig. 1 is an exploded view of a wrench according to the invention in an embodiment thereof; -
Figs. 1A, 1B and 1C are enlargements of details ofFig. 1 ; -
Fig. 2 is a three-dimensional view of the maneuvering wrench in the retracted position associated with a system for fixing sanitary fixtures; -
Fig. 3 is a three-dimensional view of the maneuvering wrench in extracted position; -
Fig. 4 is a three-dimensional view of the use of the maneuvering wrench in the retracted position for fixing a wall-hung sanitary fixture; -
Fig. 5 is a three-dimensional view of the use of the maneuvering wrench in the extracted position for fixing a wall-hung sanitary fixture; -
Fig. 6 illustrates an alternative embodiment; -
Fig. 7 is an exploded view of a modified embodiment; -
Figs. 8(A), 8(B) and 8(C) show modified embodiments of the connection between the Allen wrench and the screw element; and -
Figs. 9(A)-9(D) show exemplary embodiments of the snap-fit elements connecting the straight Allen wrench and the hexagonal prism. - With initial reference in particular to
Fig.1 , according to a preferred but not limiting embodiment, the present invention relates to a telescopic maneuvering wrench indicated as a whole with number (100) to facilitate the anchoring of a wall-hung sanitary fixture, the wrench being comprised of the elements described below. - According to the embodiment of
Fig. 1 , the telescopic maneuvering wrench (100) comprises a straight Allen wrench (4) with hexagonal head. The telescopic maneuvering wrench (100) further comprises a ring (5), also visible in the detail ofFig. 1A , inserted in a first recess or groove (16) provided on the top of the straight Allen wrench (4). A second recess (6), also visible in the detail ofFig. 1B , is provided on the side surface of the straight Allen wrench (4). - In the example of
Fig.1 the telescopic maneuvering wrench (100) further comprises a cylindrical connecting element (7) between the straight Allen wrench (4) and a screw element (3), for example a hex socket set screw. The connecting element (7) is similar to a screw cap with a hole (12) on the base. The hole (12) has a diameter comprised between the diameter of the circumference ci rcumscri bed to the straight Allen wrench (4) with hexagonal head and that of the ring (5), shown in the detail ofFigure 1C , illustrating the cross-section of the connecting element (7). An annular surface (13) comprised between the hole (12) and an internally threaded wall (14) of the connecting element (7) forms a radial abutment for the ring (5). - The telescopic maneuvering wrench (100) further comprises a hollow prismatic body, having a hexagonal cross-section, for instance, hereinafter briefly referred to as "hollow hexagonal prism" and indicated with (8). The hollow hexagonal prism (8) is provided with two portions in the form of elastic appendices which form snap or snap-fit elements indicated with (9). The snap-fit elements (9) may comprise teeth (9A) able to snap fit in the recess (6) provided on the straight Allen wrench (4) as described below.
- The telescopic maneuvering wrench (100) can also comprise an optional L-shaped Allen wrench (10). The L-shaped Allen wrench (10) can be omitted and a different tool can be used instead of it, for example a monkey wrench, a ratchet wrench, a socket wrench or other equivalent tool, able to co-act with the hollow hexagonal prism (8) for the purposes explained below.
- As shown in particular in
Fig. 1B , the recess (6) can be provided with a specific geometry: in cross-section the profile is represented by an angle where a generatrix is orthogonal to the axis of the straight wrench (4) and the other generatrix has an inclination, with respect to the previous one, by the same angle of the teeth (9A) of the snap-fit elements (9) of the hollow hexagonal prism(8). In other words, the recess is defined by a substantially flat annular surface, orthogonal to the axis of the straight Allen wrench (4), and by a truncated-conical surface. The truncated-conical surface is directed so that the recess (6) has a depth that gradually decreases towards the end of the straight Allen wrench (4) where the first recess or annular nip (16) is formed. - The ring (5) can be an elastic ring made of metal or plastic. In other embodiments the ring (5) may be a split pin, or any element capable of increasing the cross-section with respect to that of the straight Allen wrench (4). In other words, once housed in the first recess or annular nip (16) the ring (5) forms a shoulder projecting from the outer hexagonal prismatic surface of the straight Allen wrench (4).
- In the preferred embodi ment shown in
Fig.1 , the connecti ng element (7) between the screw element (3) and the straight Allen wrench (4) is a plastic cap with an internal thread corresponding to that of said screw element (3), i.e. suitable to be screwed onto the screw element (3). The hole (12) of the connecting element (7) allows the passage of the straight Allen wrench (4). - The components of the telescopic maneuveri ng wrench (100) descri bed above can be assembled as follows.
- The screw element (3), or hex socket set screw, is inserted on the hexagonal head (4A) of the straight Allen wrench (4). In other words, the upper end (in
Fig.1 ) of the straight Allen wrench (4) is inserted into the hexagonal recess of the screw element (3). - The connecting element (7) is inserted from the bottom upwards around the straight Allen wrench (4), so that the ring (5) abuts on the surface (13) and the internal thread of the
wall 14 remains free and not engaged by the straight Allen wrench (4). - At this point it is possible to screw the connecting element (7) onto the screw element (3), thus ensuri ng an integral connection between the screw element (3) and the straight Allen wrench (4).
- The size of the hexagonal cavity of the prism (8) depends on the size of the straight wrench (4). The coupling between the two elements must be characterized by longitudinal interference along the larger size of the wrench (4).
- The straight Allen wrench (4) is inserted into the hollow hexagonal prism (8) so that the snap-fit elements (9) face the connecting element (7). In other words, the straight Allen wrench (4) is inserted in the hollow cavity of the hollow hexagonal prism (8) with the end (4B) thereof opposite to the end or head (4A) constrained to the screw element (3). The insertion is performed from the side of the hollow hexagonal prism (8) where the snap-fit elements (9) are provided. The end (4B) is inserted into the longitudinal cavity of the hollow hexagonal prism (8) by deforming the snap-fit elements (9) radially outwardly, since the teeth (9A) of the snap-fit elements reduce the passage cross-section of the longitudinal cavity of the hollow hexagonal prism (8). The deformation is facilitated by the fact that the teeth (9A) have distal surfaces which are inclined towards the axis of the hollow hexagonal prism (8).
- The sliding of the hollow hexagonal prism (8) along the straight wrench (4) is free until the snap-fit elements (9) achieve the second recess (6) provided on the straight Allen wrench (4). At this point, the teeth (9A) of the snap-fit elements (9) are snap inserted into the second recess (6) and stop the reciprocal sliding between the hollow hexagonal prism (8) and the straight Allen wrench (4). The telescopic maneuvering wrench is now assembled.
- However, the reciprocal sliding between the hollow hexagonal prism (8) and the straight Allen wrench (4) can continue until the straight Allen wrench (4) is almost fully retracted into the hollow hexagonal prism (8). This is possible by applying a force sufficient to elastically deform the snap-fit elements (9) in radial direction outwardly, by making the inclined surfaces of the teeth (9A) slide along the portion of truncated-conical surface defining the second recess (6). When deformed radially outwardly, the teeth (9A) exit from the second recess (6) and slide on the prismatic surface of the straight Allen wrench (4) towards the connecti ng element (7) even up to abut against it.
- From the position of maximum retraction, i.e. the position where the straight Allen wrench (4) is completely inserted in the longitudinal cavity of the hollow hexagonal prism (8), the straight Allen wrench (4) can be removed, but not completely. When the teeth (9A) of the snap-fit elements (9) enter the second recess (6) again, the flat annular surface of the second recess (6), orthogonal to the axis of the straight Allen wrench (4), provides an abutment for the teeth (9A) of the snap-fit elements (9). The geometric shape of the teeth (9A) and of the second recess (6) is such that it does not exert a radial outward deformation of the teeth (9A), which therefore prevent the straight Allen wrench (4) from being further extracted from the hollow hexagonal prism (8).
- The telescopic maneuvering wrench of the present invention is therefore a length-adjustable wrench.
- The minimum extension occurs when the hollow prism (8) abuts against the connecting element (7), while its maximum extension occurs when the teeth (9A) of the snap-fit elements (9) are locked at the second recess (6). This second condition is shown in the detail of
Fig. 1B . - In an alternative embodiment, illustrated in the exploded view of
Fig. 6 , on the side surface thereof the connecting element (7) is provided with wings (11) having the function of facilitating the operator in screwing said connecting element (7) onto the screw element (3). - Once the telescopic maneuvering wrench (100) has been assembled as described above, it can be used by acting thereon using the L-shaped Allen wrench (10), inserting this latter inside the hollow hexagonal prism (8). In an alternative embodiment, the L-shaped Allen wrench (10) can be replaced by a conventional wrench or by a ratchet wrench or a socket wrench or any other equivalent tool.
- In the illustrated embodiment the through cavity of the hollow hexagonal prism (8) has a hexagonal cross-section, so as to couple with the straight Allen wrench (4), which can be di rectly coupled to the L-shaped Allen wrench (10). H, also the outer surface of the hollow hexagonal prism (8) has preferably a hexagonal prismatic cross-section for coupling to a wrench or any tool other than the L-shaped Allen wrench (10). However, the hollow body (8) may also have a non-hexagonal prismatic shape, i.e. with an outer surface of non-hexagonal cross-section, but preferably at least partially prismatic, to allow the gripping by a maneuvering tool acting on the outside of the hollow body (8). In less preferred embodiments, the hollow body (8) may be an elongated and inside hollow body, with a cavity of hexagonal cross-section or in any case such as to be able to couple with an Allen wrench, but with an external surface of any shape, even of circular cross-section. In this case, the operation is carried out preferably by acting with a tool (L-shaped Allen wrench (10) for example) which couples to the through longitudinal cavity and not to the outer surface of the hollow body (8).
-
Figs. 2 and3 show two arrangements of the telescopic maneuvering wrench (100) in two positions corresponding to two different lengths that can be obtained by telescopically extending the components (4) and (8). In these two figures, the telescopic maneuvering wrench is shown in combination with a device for mounting a wall-hung sanitary fixture, the device being indicated as a whole with number (20). The mounting device (20) shown in the attached figures is known per se and it is indicated just by way of example. In fact, from the description below, those skilled in the art will understand that the telescopic maneuvering wrench illustrated herein can be used in combination with several different systems and devices for mounting wall-hung sanitary fixtures equipped with a screw element (3), preferably a headless one, associable with the telescopic maneuvering wrench (100). - In the illustrated example the device (20) comprises a clamping cone (21) and a sleeve (22). The device (20) may be designed as described for example in
DE202009014171 or inDE102013112005 , the content whereof is incorporated in the present description. The device (20) is fixed to a sanitary fixture (30) to hang to a wall, as shown in F ig.5. In a known manner, the sleeve (22) has a threaded radial hole in which the screw element (3) is screwed, which co-acts with a wall-mounted pin (not shown), which is inserted axially through the device (20) and is provided with an elongated slot. By screwing the screw element (3) transversely into the radial hole of the sleeve (22), the tip of the screw element (3) co-acts with the elongated slot of the wall-mounted pin, thus generating a thrust of the sanitary fixture (30) against the wall (P) on which it shall be hung. The mounting is known and does not require further descriptions. - The telescopic maneuvering wrench (100) described above is engaged with the device (20) once this latter has been fixed to the sanitary fixture (30) simply by screwing the screw element (3) into the radial threaded hole of the sleeve (22). The fact that the telescopic maneuvering wrench can lengthen and shorten telescopically allows the operator to arrange the distal end of the hollow hexagonal prism (8) in a position that is easily accessible from outside the sanitary fixture (30), asshown in
Fig.5 . In this way, usi ng atool, for example the L-shaped Allen wrench (4), it is possibleto turn the telescopic maneuvering wrench easily. - Once the screw element (3) has been tightened in the sleeve (22) and the sanitary fixture has been correctly fixed to the wall (P), the L-shaped Allen wrench (10) can be removed and the telescopic maneuvering wrench (100) can be slightly shortened so as to remain integrally and invisibly housed inside a cavity (31) of the sanitary fixture (30), as schematically shown in
Fig.4 . - In this way the telescopic maneuvering wrench (100) is available for subsequently disassembling the sanitary fixture (30), but is substantially not visible and not accessible by the user.
- It should be understood that usually the sanitary fixture (30) requires two mounting devices (20) and therefore two telescopic maneuveri ng wrenches (100).
- It is clearly apparent from the description above that the essential elements for achieving the object of the present invention are: the hollow body (8) with the snap-fit elements (9), the straight Allen wrench (4) with the recess (6) and a system for fixing the screw element (3) to the head (4A) of the straight Allen wrench (4). A complete kit for mounting a sanitary fixture (30) shall comprise, in addition to the aforementioned components of the telescopic maneuvering wrench (100), also a mounting device (20) and the screw element (3).
-
Fig.7 is an exploded view of this set of essential components, whose assembly occurs as described above. - However, it should be understood that even if
Fig.1 shows an example where the screw element (3) is constrained to the straight Allen wrench (4) using the ring (5) and the connecting element (7), other equivalent ways may be provided for achieving such fixing. -
Figs. 8(A), 8(B) and 8(C) schematically show three ways for fixing the screw element (3) to the straight Allen wrench (4). More particularly,Fig. 8(A) schematically shows a system of fixing by means of radial plastic deformation of the screw element (3) against the straight Allen wrench (4). The radial necking, schematized through arrows (F), can cause a permanent deformation of the recess of the screw element (3) against the head (4A) of the straight Allen wrench (4), possibly causing a coupling with the recess (5), if any. -
Fig. 8(B) schematically shows a way for coupling the screw element (3) and the straight Allen wrench (4) by means of adhesive (C), while inFig. 8(C) the coupling is through welding (S). - While in the embodiment described above with specific reference to
Fig.1 , the snap-fit elements (9) are made in the form of two substantially symmetrical opposite elastic tabs provided with two teeth (9A), in other embodiments, the snap coupling can be obtained with a different number of tabs and/or with tabs of different shape.Figs. 9(A)-9(D) show four alternatives, each in front view and in an axonometric view, of possible configurations of the snap-fit elements, always indicated with (9) and provided with teeth (9A). The embodiment ofFig. 9(C) is that already described with reference toFig.1 . In general, the snap-fit elements 9 can be formed by notches that start from the distal surface of the prism (9) and extend parallel to the longitudinal direction thereof, forming thetabs 9. - In
Figs. 9(A)-9(D) , the number (8C) indicates the longitudinal, or axial, through cavity of the hollow hexagonal prism (8). The designation of the body (8) as a "hexagonal" prism refers in particular to the hexagonal shape of the longitudinal cavity (8C) which extends along the entire length of the hollow hexagonal prism (8). The hexagonal shape is particularly advantageous as it allows using standard bars of hexagonal cross-section for producing the straight Allen wrenches (4), and therefore screw elements (3) constituted by normal hex socket set screws, in combination with L-shaped Allen wrenches (10), if necessary. However, a prismatic shape other than the hexagonal one is also possible, provided that it is possible to have a torsional fit-coupling between the straight Allen wrench (4) and the hollow prism (8), as well as between the straight Allen wrench (4) and the screw element (3). - The materials and the dimensions of the invention as described above, illustrated in the accompanying drawings and claimed in the following claims, may be any according to the specific needs. Moreover, all the details can be replaced with other technically equivalent details, without departing from the protective scope of the present invention.
Claims (16)
- A telescopic maneuvering wrench (100) for facilitating the anchoring of wall-hung sanitary fixtures to a wall, said wrench (100) comprising- a straight Allen wrench (4);- a recess (6) provided on the side surface of the straight Allen wrench (4);- a connecting element (7; S, C, F) for connecting the straight Allen wrench (4) to a screw element (3);- a hollow body (8) provided with snap-fit elements (9) and a longitudinal cavity into which the straight Allen wrench (4) is inserted;characterized in that the snap fit elements (9) are adapted for snap coupling with the straight Allen wrench (4) by snap fitting in the recess (6) provided on the straight Allen wrench (4).
- Telescopic maneuvering wrench (100) according to claim 1, wherein the straight Allen wrench (4) comprises a radial ring (5) inserted in an annular nip (16) provided on the top of said straight Allen wrench (4).
- Telescopic maneuvering wrench (100) according to claim 2, wherein the connecting element (7) has a cylindrical body having: a side wall (14) with an internal thread that can engage an external thread of a screw element (3); a hole (12) on the base having a diameter comprised between the diameter of the circumference circumscribed to the straight Allen wrench (4) and that of the ring (5); an abutment surface (13) extending radially between the hole (12) and the side wall (14) of the connecting element (7).
- Telescopic maneuvering wrench (100) according to claim 3, wherein the connecting element (7) has wings (11) on the outer side surface thereof.
- Telescopic maneuvering wrench (100) according to one or more of the previous claims, wherein the hollow body (8) has a longitudinal cavity (8C) whose cross-section corresponds to the cross-section of the straight Allen wrench (4) to form a torsional coupling between the hollow body (8) and the straight Allen wrench (4).
- Telescopic maneuvering wrench (100) according to claim 5, wherein the longitudinal cavity (8C) of the hollow body (8) has a prismatic shape.
- Telescopic maneuvering wrench (100) according to claim 6, wherein the longitudinal cavity (8C) of the hollow body (8) has hexagonal cross-section.
- Telescopic maneuvering wrench (100) according to one or more of the previous claims, wherein the hollow body (8) has an external prismatic shape.
- Telescopic maneuvering wrench (100) according to claim 8, wherein the hollow body (8) has an external shape of hexagonal cross-section.
- Telescopic maneuvering wrench (100) according to one or more of the previous claims, wherein the straight Allen wrench (4) is inserted in the longitudinal cavity (8C) of the hollow body (8) so that the snap-fit elements (9) face towards the connecting element (7; C, S, F).
- Telescopic maneuvering wrench (100) according to one or more of the previous claims, comprising a screw element (3) associated with the straight Allen wrench (4), said connecting element between the straight Allen wrench (4) and the screw element (3) being a not releasable connecting element, preferably selected from the group comprising: a gluing, a welding, a plastic deformation.
- Telescopic maneuvering wrench (100) according to one or more of the previous claims, wherein said recess (6) and said snap-fit elements (9) are configured so as to allow the mutual disengagement between the snap-fit elements (9) and the straight Allen wrench (4) in one direction and to prevent the release between the snap-fit elements (9) and the straight Allen wrench (4) in the opposite direction of a reciprocal sliding movement between the straight Allen wrench (4) and the hollow body (8).
- Telescopic maneuvering wrench (100) according to claim 12, wherein the recess (6) has a profile, in cross-section, having an angle where a generatrix is orthogonal to the axis of the straight Allen wrench (4) and the other generatrix has a inclination with respect to the previous one by the same inclination angle of teeth (9A) provided on the snap-fit elements (9) of the hollow body (8).
- A kit comprising a telescopic maneuvering wrench (100) according to one or more of the previous claims, and a screw element (3) associated with the straight Allen wrench (4).
- Kit according to claim 14 further comprising a tool (10) for rotating the telescopic maneuvering wrench.
- A telescopic maneuvering wrench (100) to facilitate the anchoring of a wall-hung sanitary fixture to a wall, said wrench (100) comprising- a straight Allen wrench (4) with hexagonal head;- a radial ring (5) inserted in a first recess provided on the top of said straight Allen wrench (4);- a second recess (6) provided on the side surface of the straight Allen wrench (4);- a connecting element (7) adapted to connect the straight Allen wrench (4) to a screw element (3), said connecting element (7) having:a hole (12) on the base, whose diameter is comprised between the diameter of the circumference circumscribed to the straight Allen wrench (4) with hexagonal head and that of the radial ring (5);- a hollow hexagonal prism (8) with two portions where snap-fit elements (9) are provided, adapted to snap-fit engage in said second recess (6) provided on the side surface of the straight Allen wrench (4);wherein the hollow hexagonal prism (8) has a hexagonal cavity, the size whereof depends on the size of the straight Allen wrench (4) in order to allow the straight Allen wrench (4) to be inserted in the hollow hexagonal prism (8) so that the snap fit elements (9) face the connecting element (7), whereas the sliding of the hollow hexagonal prism (8) along the straight Allen wrench (4) is free until the snap fit elements (98) achieve the second recess (6) provided on the straight Allen wrench (4).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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PL18717506T PL3595846T3 (en) | 2017-03-16 | 2018-03-14 | Telescopic maneuvering wrench for facilitating anchoring of sanitary fixtures to a wall |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT102017000029535A IT201700029535A1 (en) | 2017-03-16 | 2017-03-16 | Telescopic maneuvering wrench to facilitate wall anchoring of a suspended sanitary. |
IT201800003460 | 2018-03-12 | ||
PCT/EP2018/025061 WO2018166659A1 (en) | 2017-03-16 | 2018-03-14 | Telescopic maneuvering wrench for facilitating anchoring of sanitary fixtures to a wall |
Publications (2)
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EP3595846A1 EP3595846A1 (en) | 2020-01-22 |
EP3595846B1 true EP3595846B1 (en) | 2021-04-28 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP18717506.2A Active EP3595846B1 (en) | 2017-03-16 | 2018-03-14 | Telescopic maneuvering wrench for facilitating anchoring of sanitary fixtures to a wall |
Country Status (5)
Country | Link |
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EP (1) | EP3595846B1 (en) |
ES (1) | ES2884152T3 (en) |
PL (1) | PL3595846T3 (en) |
PT (1) | PT3595846T (en) |
WO (1) | WO2018166659A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102019101950A1 (en) | 2019-01-26 | 2020-07-30 | Fischer Italia S.R.L. | Fastening set for a wall-mounted sanitary object and sanitary object |
DE102020107928A1 (en) | 2020-03-23 | 2021-09-23 | Grohe Ag | Installation bracket for a sanitary component to be suspended |
CN112729827B (en) * | 2020-12-21 | 2023-04-11 | 中国航发哈尔滨轴承有限公司 | Universal nut torque applying adapter |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2679778A (en) * | 1953-04-02 | 1954-06-01 | Aetna Mfg Company | Flexible rotary tool |
US6038946A (en) * | 1997-05-19 | 2000-03-21 | Jackson; Roger Lee | Axially repositionable adapter for use with a ratchet assembly |
DE202009014171U1 (en) | 2009-10-20 | 2010-03-04 | Erbil, Kamil Ridvan, Tuzla | Hidden mounting device for wall-mounted WC |
DE202010009280U1 (en) | 2010-06-18 | 2011-12-22 | Fischer Italia S.R.L. | Fastening device for fastening a wall-mounted sanitary object |
US8667871B2 (en) * | 2011-01-13 | 2014-03-11 | Larry C. Ahrens | Telescoping extension tool |
EP2847393B1 (en) | 2012-05-10 | 2020-04-15 | Keramik Holding AG Laufen | Fastening system for wall mounting |
DE102013112005A1 (en) | 2013-10-31 | 2015-04-30 | Fischer Italia S.R.L. | Fastener for a wall-hung object |
AU2014331639B2 (en) * | 2014-10-06 | 2017-05-25 | Wright Medical Technology, Inc | Torque drivers for headless threaded compression fasteners |
-
2018
- 2018-03-14 EP EP18717506.2A patent/EP3595846B1/en active Active
- 2018-03-14 PL PL18717506T patent/PL3595846T3/en unknown
- 2018-03-14 ES ES18717506T patent/ES2884152T3/en active Active
- 2018-03-14 WO PCT/EP2018/025061 patent/WO2018166659A1/en unknown
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PT3595846T (en) | 2021-07-28 |
ES2884152T3 (en) | 2021-12-10 |
EP3595846A1 (en) | 2020-01-22 |
WO2018166659A1 (en) | 2018-09-20 |
PL3595846T3 (en) | 2021-12-27 |
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