CN111516572A - Support for a handrail, support device, handrail assembly and method for assembling the same - Google Patents

Abstract

The present invention relates to the field of vehicle armrests. In particular, the invention relates to a support (20) for an armrest, to be mounted to a base (10) and comprising a support body (21) for carrying the armrest and at least one catch (22) projecting from a surface of the support body (21), said catch (22) being configured so as to be insertable into an aperture (12) of said base (10) and engageable on an aperture wall (19) of said base (10) around said aperture (12). The invention also relates to a support device with such a support, an armrest assembly with a support device and an assembly method for an armrest assembly. The invention realizes that: it is possible to provide a handrail support device which is simple in structure and easy to assemble.

Description

Support for a handrail, support device, handrail assembly and method for assembling the same

Technical Field

The present invention relates to a support for a handrail. The invention also relates to a support device with such a support, an armrest assembly with a support device and an assembly method for an armrest assembly.

Background

Currently, vehicles are often equipped with a center armrest located at the rear seat. The center armrest is generally pivotable between an open position and a retracted position and should be secured to the seat back with strength requirements that can meet a variety of crash tests.

Fig. 8 shows a support device 200 for mounting a center armrest according to the prior art, which comprises a base 201 for fixing to a seat back and a support 202 for carrying an armrest. The base 201 and the bracket 202 are each provided with two mounting holes 204 and 205 for mounting bolts 203. By means of two mounting bolts 203, the bracket 202 with the armrest can be fixed to the base 201 and thus to the seat back.

Furthermore, document CN202641441U discloses a central armrest mechanism of a passenger car capable of sliding back and forth, which includes six components of a slide way, a slide core, a retainer, balls, a damper and a plastic rack. During assembly, the six components need to be assembled in sequence.

Document JP3780662B2 discloses a pressure plate for shaping the corners of a seat back, which pressure plate is attached to a bracket by means of a claw. But such a platen is not used to mount the seat arm rest.

The above known support devices for central armrests are relatively complex in their structure and assembly procedure, with the consequent considerable economic and time costs associated.

Accordingly, it is desirable to provide a handrail support device that is simple in structure and easy to assemble.

Disclosure of Invention

This object is achieved by a bracket for an armrest according to the invention to be mounted to a base and comprising a bracket body for carrying the armrest and at least one catch projecting from a surface of the bracket body, the catch being configured to be insertable into an aperture of the base and to be engageable on an aperture wall of the base around the aperture.

According to an alternative embodiment, the catch has a first arm which projects from the surface of the holder body and a second arm which extends from the end of the first arm remote from the holder body at an angle to the first arm, wherein the first and second arms extend straight.

According to an alternative embodiment, the catch is in the form of a substantially "L" shape, wherein the second arm extends in a transverse direction parallel to the surface of the bracket body.

According to an alternative embodiment, two of the at least one latching hook, in particular any two latching hooks, are distributed on the bracket body offset with respect to one another in the following two directions: namely the engaging direction E of the hook with the aperture wall and the direction perpendicular to the engaging direction in the surface of the holder main body.

It is to be noted here that, in the context of the present text, the term "engagement direction" is intended to mean the following direction: in this direction, the catch has a maximum dimension of engagement depth with the aperture wall.

According to an alternative embodiment, the bracket further comprises at least one first opening in the main body of the bracket for receiving a bolt, the first opening being located between two of the at least one hooks.

According to an alternative embodiment, the bracket body comprises a plate-like middle part, a first side wing projecting from a first side of the middle part at an angle, in particular perpendicularly, with respect to the middle part, and a second side wing projecting from a second side of the middle part opposite the first side at an angle, in particular perpendicularly, with respect to the middle part, wherein the armrest is to be attached to the first and second side wings, and wherein the catch is provided on the middle part, the first and second side wings being located on the opposite side of the middle part from the catch; in particular, the second arm extends in a direction pointing from one of the first and second flanks to the other.

The object of the invention is also achieved by a support device for an armrest, comprising a base and a support according to the above description, wherein the base comprises at least one aperture cooperating with a catch of the support, the support being fixed to the base by: the catch passes through the aperture and engages against the aperture wall.

According to an alternative embodiment, the bracket means are configured such that by engagement of the catch with the aperture wall, the freedom of movement of the bracket relative to the base is limited in a direction in the plane of the aperture perpendicular to the direction of engagement E of the catch with the aperture wall and in a direction perpendicular to this plane.

According to an alternative embodiment, the base comprises at least one second opening which, in the assembled state of the bracket device, is aligned with the first opening in the bracket for the passage of a bolt.

According to an alternative embodiment, the bracket device comprises at least one limit feature comprising a limit tab on the bracket and a limit receptacle on the base for receiving the limit tab, the limit feature being configured to limit the freedom of movement of the bracket relative to the base in a direction perpendicular to the plane in which the aperture lies.

The object of the invention is also achieved by an armrest assembly for a vehicle, comprising an armrest and a bracket device as described above for mounting the armrest to a vehicle seat frame.

The object of the invention is also achieved by a method for assembling a handrail assembly, the method comprising at least the steps of:

securing a base to a vehicle seat frame;

mounting the armrest to the bracket;

moving the support with the armrest in front of the base proximate the base until a termination position is reached at which the first opening of the support is aligned with the second opening of the base such that the hook extends into the aperture and thereby engages the aperture wall; and

bolts are passed through the first and second openings and fixed to the vehicle seat frame.

According to the invention, it is achieved that:

the invention is suitable for the installation of the large armrest and the small armrest of 60% or 20% of backrests, and is convenient to install;

-cost saving: compared with the traditional installation mode, one bolt and one nut are saved; and

the strength test can meet various working conditions of the seat.

Other advantages and advantageous embodiments of the inventive subject matter are apparent from the description, the drawings, and the claims.

Drawings

Further features and advantages of the present invention will be further elucidated by the following detailed description of an embodiment thereof, with reference to the accompanying drawings. The attached drawings are as follows:

fig. 1 shows a perspective view of a support device for an armrest according to an exemplary embodiment of the present invention in an exploded state;

fig. 2 shows a front perspective view of a support arrangement for a handrail according to an exemplary embodiment of the present invention in an assembled state;

fig. 3 shows a front view of a support device for an armrest according to an exemplary embodiment of the present invention in an assembled state;

FIG. 4 shows a cross-sectional view of the stent device of FIG. 3 taken along A-A;

FIG. 5 shows a cross-sectional view of the stent device of FIG. 3 taken along B-B;

fig. 6 shows a rear view of a support device for an armrest according to an exemplary embodiment of the present invention in an assembled state;

fig. 7 shows a rear perspective view of a support arrangement for an armrest according to an exemplary embodiment of the present invention in an assembled state; and

fig. 8 shows a perspective view of a bracket device for an armrest according to the related art in an exploded state.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and exemplary embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the scope of the invention.

Fig. 1 shows an exploded view of a support device 100 for an armrest, in particular a vehicle armrest, more particularly a vehicle rear center armrest, according to an exemplary embodiment of the invention. The stand apparatus 100 includes a base 10 and a stand 20 to be attached to the base 10 for carrying an armrest (not shown in the drawings). With the armrest apparatus 100, the armrest can be mounted to its target position.

The bracket 20 includes a bracket main body 21 and at least one hook 22 protruding from the bracket main body 21, the hook 22 being configured to be inserted into the aperture 12 of the base 10 and to be snapped onto the aperture wall 19 of the base 10 around the aperture 12 (see fig. 6-7).

The bracket main body 21 comprises a middle part 21-1, for example, in the form of a plate, in particular a substantially rectangular plate, a first flank 21-2 projecting from a first side of the middle part 21-1 at an angle, in particular perpendicularly, with respect to the middle part 21-1, and a second flank 21-3 projecting from a second side of the middle part 21-1 opposite the first side at an angle, in particular perpendicularly, with respect to the middle part 21-1, wherein the first flank 21-2 and the second flank 21-3 are positioned directly facing each other. The catch 22 is arranged on the intermediate portion 21-1 and is oriented towards the base 10 in the assembled state of the holder device 100. The first side wing 21-2 and the second side wing 21-3 are oriented away from the base 10 in the assembled state of the support device 100 to receive a handrail, which is configured for example as a grab bar or as a grab box.

In an exemplary embodiment, the armrest is pivotally attached to the first side wing 21-2 and the second side wing 21-3. For this purpose, the first wing 21-2 and the second wing 21-3 are provided with a pivot post 29 and a mounting hole 28 for mounting the armrest.

As can be seen more clearly in fig. 6-7, the catch 22 has a generally "L" shaped configuration. Specifically, the hook 22 has a first arm 23 protruding from a first surface 31 (see fig. 5) of the intermediate portion 21-1 facing the base 10 and a second arm 24 extending from an end of the first arm 23 facing away from the first surface 31 at an angle with respect to the first arm 23. The catch 22 is configured such that the space between the first arm 23 and the second arm 24 can be inserted particularly tightly by the aperture wall 19.

According to an exemplary embodiment of the present invention, the second arm 24 extends substantially parallel to the first surface 31 of the intermediate portion 21-1. Alternatively, the second arm 24 may extend slightly obliquely towards or away from the first surface 31 with respect to a direction parallel to the first surface 31, for example with an inclination angle of less than 30 °, preferably less than 15 °, more preferably less than 5 °.

According to an exemplary embodiment of the invention, the first arm 23 extends at an angle with respect to the first surface 31. In the embodiment shown in fig. 7, the first arm 23 is configured such that the angle between the first arm 23 and the first surface 31 facing the second arm 24 is an acute angle, for example an acute angle larger than 45 °, in particular larger than 60 °.

According to an exemplary embodiment of the present invention, the angle between the first arm 23 and the second arm 24 is in the range of 90 ± 30 °.

In the exemplary embodiment shown in the drawings, the catch 22 is configured as a transverse catch requiring transverse mounting, because: the second arm 24 extends in a direction pointing from one of the first and second flanks to the other (i.e. the x-direction in the figure, also referred to as the transverse direction), while the direction of extension of the second arm 24 corresponds to the mounting direction M of the catch 22. However, the second arm 24 may also have any other suitable extension direction, for example extending in a y-direction (i.e. height direction) perpendicular to the x-direction or in an oblique direction lying between the x-direction and the y-direction. In these cases, the catch 22 is correspondingly constructed as a catch which needs to be mounted from the respective direction. Thus, the hooks with the appropriate orientation can be selected according to the available space conditions of the installation site.

It should be noted here that, in the case where the bracket device 100 according to the present invention is used for a vehicle armrest, the x-direction, i.e., the lateral direction, corresponds to the vehicle body width direction of the vehicle, the y-direction, i.e., the height direction, corresponds to the vehicle height direction, and the z-direction, i.e., the front-rear direction, corresponds to the vehicle body length direction of the vehicle.

In the exemplary embodiment shown in the figures, the first arm 23 and the second arm 24 have a straight flat structure. However, the first arm 23 and/or the second arm 24 may also have any other suitable configuration in the art. For example, the first arm 23 and/or the second arm 24 have a non-straight, e.g. curved, corrugated or wavy, configuration, and/or the first arm 23 and/or the second arm 24 may also have a block-like structure.

Further, the at least one hook 22 comprises, for example, a first hook 22-1 and a second hook 22-2, wherein the first hook 22-1 and the second hook 22-2 are arranged on the intermediate portion 21-1 offset with respect to each other in both a first direction and a second direction, wherein the first direction refers to the following direction: this direction is parallel to the perpendicular projection of the direction of extension of the second arm 24 in the first surface 31 and also corresponds to the engagement direction E (see fig. 6) of the catch 22 with the aperture wall 19, whereas the second direction refers to a direction in the first surface 31 perpendicular to the first direction. With this arrangement, the first hook 22-1 and the second hookThe hooks 22-2 provide a wider area of application and more uniform and secure attachment of the bracket 20. In the exemplary embodiment shown in the figures, the first direction corresponds to the x-direction and thus the second direction corresponds to the y-direction, since the second arm 24 extends horizontally. In this case, the first hook 22-1 and the second hook 22-2 have a staggered spacing D in the x direction₁And has a staggered spacing D in the y-direction₂As shown in fig. 3.

In an alternative embodiment, the holder 20 can also have only one or more than two hooks. In the case of more than two hooks, it is possible to have the staggered spacing in the first and second directions defined above between two of the hooks.

Furthermore, the bracket 20 may further comprise at least one first opening 25 on the bracket body 21 for receiving the bolt 30, for example between two of the at least one hooks.

Furthermore, as better seen in fig. 4, the bracket 20 may further comprise at least one countersink 33 on the bracket body 21 to define a first mounting space 34 for receiving the bolt head of the bolt 30. When the stand 20 is in the assembled position, the sinking direction of the sinking portion 33 is directed toward the base 10. Each first opening 25 is assigned to a respective depression 33, the first opening 25 opening into the respective depression. In the illustrated embodiment, the sinker 33 has a circular shape. However, sinker 33 may alternatively have any other suitable shape.

Further, the bracket 20 may further include at least one, and particularly two, limit tabs 26 extending from the bottom side of the bracket body 21. In an exemplary embodiment according to the invention, the limit tabs 26 are arranged offset in the x-direction from the hooks. Further features regarding the stop tab will be described in detail below.

According to an exemplary embodiment of the invention, the bracket main body 21 further has at least one notch 27 (see fig. 1 and 5) on the intermediate portion 22-1, wherein each of the at least one notch 27 is assigned to a respective one of the hooks 22. Said notches 27 can be used in particular as observation windows for observing the progress and the state of the assembly of the catches 22 and the aperture wall 19 during assembly. In addition, the notches 27 can also help to reduce the weight of the bracket 20. Illustratively, notches 27 are disposed at the following locations of intermediate portion 22-1: the projected contour of the hook 22 in the direction perpendicular to the first surface 31 within the first surface 31 at least partially coincides with this position. According to a particular embodiment, said projected contour falls completely within the confines of the notch 27.

According to an exemplary embodiment of the invention, the catch 22 and/or the limit tab 26 are formed integrally with the bracket main body 21.

According to an exemplary embodiment of the present invention, the bracket 20 is formed using a stamping process. In particular, the hooks 22 and the corresponding notches 27 and the stop tabs 26 are formed by applying a stamping process to the bracket main body 21.

A base 10 according to an exemplary embodiment of the present invention is explained as follows.

The base 10 is constructed in a plate-like structure, the basic shape of which is, for example, rectangular. The base 10 comprises at least one aperture 12 for receiving the catch 22. The aperture 12 is configured to enable the hook 22 to be inserted into the aperture 12 and to hook onto the aperture wall 19. In the case where the bracket device 100 is used for a vehicle armrest, the base 10 is fixed to a seat back frame by welding or the like, for example.

In the exemplary embodiment shown in the figures, the base 10 comprises at least one arch 18 rising from the sheet material of the base to define a second mounting space 32 (see fig. 5) for receiving the catch 22. When the base 10 is in the assembled position, the arching direction of the arching 18 points towards the shelf 20. Each opening 12 is assigned a respective one of the bulges 18, wherein the opening 12 opens onto the respective bulge 18. In the illustrated embodiment, the raised portion 18 has a generally rectangular shape. However, the arch 18 may alternatively have any other suitable shape.

The stand arrangement 100 is configured such that the sinkers 33 of the stand 20 and the domes 18 of the base 10 are configured with the same dimensions in the z direction, so that in the assembled state the stand body 21 rests with its sinkers 33 on the base body 11 while the base body 11 rests with its domes 18 on the stand body 21.

To limit the freedom of movement of the support 20, the dimensions of the aperture 12 in said second direction (in the illustrated embodiment the y-direction) are such that: when the hooks 22 are snapped onto the aperture wall 19, the hooks 22 and thus the mobility of the holder 20 in the second direction can be limited to a certain extent, preferably to a large extent, more preferably substantially completely. To this end, the dimension of the aperture 12 in the second direction is for example arranged substantially equal to the dimension of the catch 22 in this direction. On the other hand, the latching hook 22 is configured such that its movability in the z direction when it is latched to the aperture wall 19 is limited to a certain extent, preferably to a large extent, more preferably substantially completely. For this purpose, the distance between the second arm 24 of the latching hook 22 and the first surface 31 is, for example, set substantially equal to or slightly smaller than the thickness of the base 10 at the bulge 18.

Furthermore, the base 10 may further comprise at least one second aperture 15 for receiving the bolt 30, the second aperture 15 being located, for example, between two apertures 12.

Further, in correspondence with the limit tab 26 of the bracket 20, the base 10 comprises at least one limit receptacle 16 at its bottom side for at least partially receiving the limit tab 26. The limit receptacle 16 is configured to limit the limit tab 26 and thereby the bracket 20 in the z-direction to a certain extent, preferably to a large extent, more preferably substantially completely, when the limit tab 26 is at least partially received in the limit receptacle 16. In an exemplary embodiment according to the present invention, the limit receptacle 16 includes a baffle 13 disposed opposite the base body 11. When the bracket body 21 is fully engaged with the base body 11, the limit tab 26 abuts with its front surface against the shutter 13, as shown in fig. 4-5. Additionally and/or alternatively, the limit stops receptacle 16 may also provide vertical support for the stand 20 in the assembled state, e.g., the limit tab 26 may sit on the bottom of the limit stop receptacle 16 so that the limit stop receptacle 16 bears at least a portion of the weight of the stand 20.

On the other hand, the limit stop receiving portion 16 may also serve as a mounting guide of the bracket 20 by being configured to have a form of a slide groove. In this case, during assembly, the support 20 can be moved in the mounting direction M parallel to the above-mentioned first direction by sliding the support 20 with its limit tab 26 in the limit receptacle 16, so that the catch 22 engages the aperture wall 19 and thus the engagement depth gradually increases, until it comes to an end position in which the first opening 25 of the support 20 is aligned with the second opening 15 of the base, in the embodiment shown in the figures with transverse catches 22, the mounting direction M corresponding to the x-direction. According to an exemplary embodiment of the invention, the first arm 23 of the catch 22 rests exactly against the aperture wall 19 when the first aperture 25 is aligned with the second aperture 15.

In this case, it is preferable that the channel extending direction of the chute is parallel to the mounting direction M.

Furthermore, the correct relative position of the bracket 20 and the base 10 in the y-direction can be determined by means of the limit tabs 26 and the limit receptacles 16, so that the catch 22 and the aperture 12 can be aligned more accurately and conveniently. This compensates for poor visibility of the catch 22 and aperture 12 during installation due to shadowing by the support 20. To this end, the holder device 100 can be configured such that the latching hook 22 is exactly flush with the opening 12 and the first opening 25 is exactly flush with the second opening 15 in the y-direction when the limit tab 26 is in its lower limit position in the limit receptacle 16. Additionally and/or alternatively, corresponding alignment marks may be provided on the limit tabs 26 and/or the limit receptacles 16.

According to an exemplary embodiment of the present invention, the base 10 is integrally formed of, for example, a metal material.

A method for mounting the rack device 100 according to an exemplary embodiment of the present invention is explained as follows.

First, the base 10 is provided and the base 10 is fixed to its target installation position, for example, a seatback frame of a vehicle. Securing means include, but are not limited to, force-locking, form-locking, and/or material bonding (e.g., welding).

Then, the bracket 20 to which the armrest has been attached is provided.

Subsequently, the mounting height of the bracket 20 in the y direction is found, for example, by means of the limit tab 26 and the limit receptacle 16.

Next, the bracket 20 is moved in the mounting direction M from the side of the base 10 in the mounting height next to the base 10. With this lateral movement of the bracket 20, the catch 22 will extend into the aperture 12, engage the aperture wall 19 and snap deeper and deeper onto the aperture wall 19, while the limit tab 26 will slide into the limit receptacle 16. This lateral movement is stopped if the first aperture 25 of the bracket 20 and the second aperture 15 of the base 10 are aligned.

Then, the bolt 30 is passed through the first opening 25 and the second opening 15 in this order and fixed to, for example, a vehicle seat back frame by means of a screw.

According to the present invention, the movement restriction force of the bracket 20 relative to the base 10 in the x direction is mainly provided by the fastening action of the bolt 30, the movement restriction force of the bracket 20 relative to the base 10 in the y direction is mainly provided by the engagement between the hook 22 and the aperture 12, and the movement restriction force of the bracket 20 relative to the base 10 in the z direction is mainly provided by the gripping action of the hook 22 and the engagement between the stopper tab 26 and the stopper receiver 16. Thus, the bracket device 100 according to the present invention can restrict the freedom of movement of the bracket 20 with respect to the base 10 in all three directions of x, y, and z, so that the bracket 20 with the armrest can be firmly fixed to the base 10.

The bracket device according to the present invention can achieve the fixing of the bracket 20 to the base 10 with a desired strength using only one bolt, which reduces the use of mounting bolts and thus saves costs and simplifies the mounting process compared to the prior art.

The bracket device of the present invention is suitable for mounting a center armrest on 60% or 20% of a seat back, for example.

Although some embodiments have been described, these embodiments have been presented by way of example only, and are not intended to limit the scope of the invention. The appended claims and their equivalents are intended to cover all such modifications, substitutions and changes as fall within the true scope and spirit of the invention.

Claims (10)

1. A bracket (20) for an armrest, the bracket being adapted to be mounted to a base (10) and comprising a bracket body (21) for carrying the armrest and at least one catch (22) projecting from a surface of the bracket body (21), the catch (22) being configured to be insertable into an aperture (12) of the base (10) and engageable on an aperture wall (19) of the base (10) around the aperture (12).

2. The cradle (20) of claim 1,

the hook (22) has a first arm (23) projecting from the surface of the holder main body (21) and a second arm (24) extending at an angle relative to the first arm from an end of the first arm (23) remote from the holder main body (21), wherein the first arm (23) and the second arm (24) extend straight.

3. The cradle (20) of claim 2,

the catch (22) is in the form of a substantially "L" shape, wherein the second arm (24) extends in a transverse direction parallel to the surface of the bracket body (21).

4. Support (20) according to any one of the preceding claims,

two of the at least one latching hook, in particular any two latching hooks, are distributed on the bracket body (21) offset with respect to one another in the following two directions: namely, the engaging direction (E) of the hook (22) with the orifice wall (19) and the direction perpendicular to the engaging direction (E) in the surface of the holder main body (21).

5. Support (20) according to any one of the preceding claims,

the bracket (20) further comprises at least one first opening (25) on the bracket body (21) for receiving a bolt (30), the first opening (25) being located between two of the at least one catch (22).

6. Support (20) according to any one of the preceding claims,

the bracket body (21) comprises a plate-shaped middle part (21-1), a first flank (21-2) which extends from a first side of the middle part at an angle, in particular perpendicularly, relative to the middle part, and a second flank (21-3) which extends from a second side of the middle part (21-1), opposite to the first side, at an angle, in particular perpendicularly, relative to the middle part, wherein the armrest is to be attached to the first side wing (21-2) and the second side wing (21-3), the hook (22) is arranged on the middle part (21-1), and the first side wing (21-2) and the second side wing (21-3) are positioned on the opposite side of the middle part (21-1) to the hook (22); in particular, the second arm (24) extends in a direction pointing from one of the first and second flanks (21-2, 21-3) to the other.

7. Support device (100) for an armrest, comprising a base (10) and a support (20) according to any one of the preceding claims, wherein the base (10) comprises at least one aperture (12) cooperating with a catch (22) of the support, the support (20) being fixed to the base (10) by: the hook (22) is passed through the aperture (12) and engaged on the aperture wall (19).

8. The holder device (100) according to claim 7,

the holder device (100) is configured such that by engagement of the hook (22) with the aperture wall (19), the freedom of movement of the holder (20) relative to the base (10) can be limited in a direction perpendicular to the direction of engagement (E) of the hook (22) with the aperture wall (19) in a plane of the aperture (12) and in a direction perpendicular to this plane; and/or

The base (10) comprises at least one second opening (15), the second opening (15) being aligned with the first opening (25) on the bracket (20) in the assembled state of the bracket device (100) for the passage of a bolt (30); and/or

The bracket device (100) comprises at least one limit feature comprising a limit tab (26) on the bracket (20) and a limit receptacle (16) on the base (10) for receiving the limit tab (26), the limit feature being configured to limit the freedom of movement of the bracket (20) relative to the base (10) in a direction perpendicular to the plane in which the aperture lies.

9. An armrest assembly for a vehicle comprising an armrest and a bracket arrangement (100) according to claim 8 or 9 for mounting the armrest to a vehicle seat frame.

10. A method for assembling the armrest assembly of claim 9, the method comprising at least the steps of:

securing a base (10) to a vehicle seat frame;

mounting the armrest to the support (20);

moving the support (20) with the armrest in front of the base (10) proximate to the base (10) until a terminal position is reached, in which the first opening (25) of the support (20) is aligned with the second opening (15) of the base (10), such that the catch (22) projects into the aperture (12) and thereby engages the aperture wall (19); and

a bolt (30) is passed through the first and second openings (25, 15) and fixed to the vehicle seat frame.

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