CN211252288U - Clamping structure of automobile seat angle adjuster handle - Google Patents

Abstract

The application relates to a clamping structure of a handle of an automobile seat angle adjuster, which comprises an upright post arranged on a handle body of the handle of the automobile seat angle adjuster and an angle adjuster mandrel matched with the upright post; a first cavity and a second cavity which are sequentially communicated are arranged in the upright post, first limiting bulges which can elastically deform are symmetrically arranged on a pair of side walls of the first cavity, and a first limiting groove is formed by a gap between each first limiting bulge and the corresponding second cavity; the angle adjuster mandrel comprises a first long shaft and a second long shaft which are respectively adaptive to the diameters of the second cavity and the first cavity; a second limiting bulge is arranged on the side wall of the first long shaft corresponding to the first limiting groove, and a second limiting groove is formed by a gap between the second limiting bulge and the second long shaft; the second limiting protrusion is clamped with the first limiting groove, and the first limiting protrusion is clamped with the second limiting groove, so that the stand column is fixedly connected with the angle adjuster mandrel. This application has reduced spare part quantity and the assembly process that car seat constitutes, has avoided the risk of fish tail backplate.

Description

Clamping structure of automobile seat angle adjuster handle

Technical Field

The utility model relates to an auto-parts field especially relates to a joint structure for car seat angle modulation ware handle.

Background

At present, the connection between the handle of the angle adjuster and the angle adjuster of the automobile seat generally adopts two modes:

firstly, as shown in fig. 1 to 4, a first plastic handle 011 is connected with a first core shaft 013 of the angle adjuster through a snap spring 5, wherein the connecting end of the first core shaft 013 of the angle adjuster is cylindrical, and a circle of splines 0131 are arranged on the periphery of the connecting end; be provided with the spline groove 0111 who corresponds the joint with spline 0131 on the stand of first plastics handle 011, be provided with the mounting groove that is used for installing jump ring 5 on the first plastics handle 011 simultaneously, in inserting first plastics handle 011 with angle modulation ware first dabber 013, spline 0131 and spline groove 0111 joint, install jump ring 5 in the mounting groove of first plastics handle 011 simultaneously, realize first plastics handle 011 and angle modulation ware first dabber 013 further fixed, prevent that angle modulation ware first dabber 013 from droing from first plastics handle 011. When installing jump ring 5, need carry out supplementary installation with the help of pliers 6, if protect improperly, probably fish tail seat protection plate. In addition, in order to guarantee the assembly space of the clamp spring 5, a larger gap needs to be reserved between the first plastic handle and the large seat protection plate, so that the appearance is not attractive enough.

Secondly, as shown in fig. 5 to 9, a second plastic handle 021 and a second mandrel 023 of the angle adjuster are connected through a metal handle 022, wherein the connecting end of the second mandrel 023 of the angle adjuster is cylindrical, and a clamping groove 0231 is arranged on the side surface; one end of metal handle 022 is provided with snap ring 0221 that corresponds with draw-in groove 0231, and the other end of metal handle 022 is worn out seat big backplate 024 and second plastics handle 021 joint. During assembly, one end of the metal handle 022 is welded to the second core shaft 023 of the recliner, and then the other end of the metal handle 022 is inserted through the seat cover 024 and is clamped to the second plastic handle 021. In the process that the other end of the metal handle 022 penetrates out of the seat large guard plate 024, the metal handle 022 can scratch the seat large guard plate 024 frequently. In addition, after welding one end of the metal handle 022 and the second mandrel 023 of the angle adjuster together, a plurality of relatively complicated inspection processes are required, for example, whether the welding position of the metal handle 022 is in place or not and whether the welding strength is qualified or not are required to be inspected, whether the metal deformation caused in the welding process exceeds a specified range or not is required to be inspected, and the workload of the installation process is increased to a great extent.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention has been made to provide a snap structure of a handle of a seat recliner for vehicles that overcomes or at least partially solves the above problems.

In order to achieve the above object, an embodiment of the present invention provides a clamping structure for a handle of an automobile seat angle adjuster, which includes a stand column arranged on a handle body of the handle of the automobile seat angle adjuster and an angle adjuster core shaft matched with the stand column; a first cavity and a second cavity which are sequentially communicated are arranged in the upright post, and the diameter of the first cavity is larger than that of the second cavity; a pair of side walls of the first cavity are symmetrically provided with elastically deformable first limiting bulges, and the height of the first limiting bulges is smaller than or equal to the difference between the radius of the first cavity and the radius of the second cavity; a first limit groove is formed by a gap between the first limit bulge and the second cavity; the angle adjuster mandrel comprises a first long shaft and a second long shaft, the diameter of the first long shaft is matched with that of the second cavity, and the diameter of the second long shaft is matched with that of the first cavity; the side wall of the first long shaft is provided with a second limiting bulge corresponding to the first limiting groove, a gap between the second limiting bulge and the second long shaft forms a second limiting groove, and the second limiting groove corresponds to the first limiting bulge; the angle adjuster mandrel is pushed into the stand column, the second limiting protrusion abuts against the first limiting protrusion to generate elastic deformation under the action of thrust, so that the second limiting protrusion passes through the first limiting protrusion to be clamped with the first limiting groove, and meanwhile, the first limiting protrusion restores the elastic deformation to be clamped with the second limiting groove, and the stand column is fixedly connected with the angle adjuster mandrel.

Preferably, the first limiting protrusion is provided with a first inclined surface facing the first cavity.

Preferably, the other pair of side walls of the second cavity are provided with supporting protrusions.

Further preferably, the support protrusion is provided with a draft angle.

Preferably, a reinforcing rib is further arranged between the outer side wall of the upright post and the handle body.

Preferably, the surfaces of the pair of side walls of the second cavity are symmetrically provided with second slopes.

Further preferably, a third inclined plane corresponding to the second inclined plane is arranged on the first limiting protrusion.

Preferably, in the assembling direction, a first assembling gap is reserved between the front end of the first long shaft and the second cavity.

Preferably, in the assembling direction, a cylindrical shaft is further arranged behind the second long shaft, and a proper second assembling gap is reserved between the cylindrical shaft and the end face of the upright column.

Preferably, the post comprises a cylindrical or rectangular shape and the recliner mandrel comprises a cylindrical or rectangular shape, respectively.

The beneficial effects of the utility model reside in that: the utility model designs the adaptive clamping structure for the inner structure of the upright post and the shape of the angle adjuster mandrel, when the angle adjuster mandrel is pushed into the upright post, the second limit bulge of the angle adjuster mandrel is abutted against the first limit bulge inside the upright post under the action of thrust, so that the first limit bulge generates elastic deformation, thereby the second limit bulge of the angle adjuster mandrel crosses the first limit bulge inside the upright post to be clamped with the first limit groove inside the upright post, and simultaneously the first limit bulge inside the upright post recovers the elastic deformation to be clamped with the second limit groove of the angle adjuster mandrel, thereby realizing the fixed connection of the upright post and the angle adjuster mandrel, compared with the prior art, the technical proposal of the utility model omits a clamp spring for further fixing a handle and an angle adjuster, thereby avoiding the scratch of a plastic seat guard plate by an installation tool in the process of installing the clamp spring and the large gap between the handle and the guard plate reserved for ensuring the assembly space of the clamp spring, the appearance of the handle is more beautiful; in addition, the metal handle is omitted, the seat guard plate is prevented from being scratched in the installation process of the metal handle, a plurality of inspection processes after the metal handle is welded are omitted, the installation process of the automobile seat angle adjuster handle is simplified, the automobile seat angle adjuster handle and the angle adjuster can be quickly and stably installed, and the installation efficiency is improved.

The above description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the present invention is given.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of a prior art handle assembly for a seat recliner of an automotive vehicle;

FIG. 2 is a schematic view of a first plastic handle;

FIG. 3 is a schematic structural view of a first mandrel of the recliner;

FIG. 4 is a schematic view of the assembly of the first plastic handle and the first spindle of the recliner;

FIG. 5 is a schematic view of another prior art handle for a seat recliner for an automotive vehicle seat;

FIG. 6 is a schematic view of the metal handle passing through the large seat fender;

FIG. 7 is a schematic view of the installation of the second spindle and the metal handle of the recliner;

FIG. 8 is a schematic structural view of a second mandrel of the recliner;

FIG. 9 is a schematic structural view of a metal handle;

fig. 10 is a schematic structural view of a handle of an angle adjuster for a seat of an automobile according to an embodiment of the present invention;

FIG. 11 is an enlarged view of a portion of FIG. 10;

fig. 12 is a cross-sectional view of a handle of an angle adjuster for a seat of an automobile according to an embodiment of the present invention;

FIG. 13 is a view showing the positional relationship among the first stopper protrusion, the first stopper groove and the first inclined surface on the basis of FIG. 12;

fig. 14 is a schematic structural diagram of an angle adjuster spindle according to an embodiment of the present invention;

fig. 15 is a schematic structural diagram of an angle adjuster spindle at another viewing angle according to an embodiment of the present invention;

fig. 16 is a front view of an assembled latch structure of a handle of an automobile seat recliner according to an embodiment of the present invention;

FIG. 17 is a cross-sectional view A-A of FIG. 16;

fig. 18 is a cross-sectional view of another handle for a seat recliner of an automobile seat according to an embodiment of the present invention;

fig. 19 is a cross-sectional view of a handle of a vehicle seat recliner provided in accordance with an embodiment of the present invention;

fig. 20 is a schematic structural view of a handle of an angle adjuster of a seat of an automobile at another viewing angle according to an embodiment of the present invention;

FIG. 21 is an enlarged view of a portion of FIG. 20;

fig. 22 is a partial enlarged view of a cross-sectional view of yet another vehicle seat recliner handle provided in accordance with an embodiment of the present invention;

FIG. 23 is a cross-sectional view B-B of FIG. 16;

fig. 24 is an application scene schematic view of a clamping structure of a handle of an automobile seat angle adjuster according to an embodiment of the present invention;

description of reference numerals:

011-a first plastic handle, 013-a first mandrel of an angle adjuster, 0131-a spline, 0111-a spline groove, 5-a snap spring and 6-a pliers;

021-a second plastic handle, 022-a metal handle, 023-a second mandrel of an angle adjuster, 0221-a snap ring, 0231-a card slot, 024-a large seat guard plate;

1-automobile seat angle adjuster handle, 2-plastic seat guard plate, 3-angle adjuster core shaft and 4-angle adjuster;

10-a handle body, 11-a reinforcing rib, 12-an upright post, 13-a first limiting bulge, 14-a first limiting groove, 15-a supporting bulge, 17-a first assembling gap and 18-a second assembling gap;

121-first cavity, 122-second cavity, 1221-second slope, 131-first slope, 132-third slope;

31-first long axis, 32-second long axis, 33-cylindrical axis;

311-a second limit protrusion, 312-a second limit groove.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

The terms "comprises" and "comprising," and any variations thereof, in the described embodiments of the invention, and in the claims and drawings, are intended to cover a non-exclusive inclusion, such as a list of steps or elements.

The technical solution of the present invention will be described in further detail with reference to the accompanying drawings and embodiments.

Fig. 10 is a schematic structural view of a handle of a seat recliner for a car provided by an embodiment of the present invention, fig. 11 is a partially enlarged view of fig. 10, fig. 12 is a cross-sectional view of a handle of a seat recliner for a car provided by an embodiment of the present invention, fig. 13 illustrates a position relationship of a first limiting protrusion, a first limiting groove and a first inclined plane on the basis of fig. 12, fig. 14 is a schematic structural view of a spindle of a seat recliner provided by an embodiment of the present invention, fig. 15 is a schematic structural view of a spindle of a seat recliner for another angle provided by an embodiment of the present invention, fig. 16 is a main view of a joint structure of a handle of a seat recliner for a car provided by an embodiment of the present invention after being assembled, fig. 17 is a-a cross-sectional view of fig. 16, as shown in fig. 10-17, the present invention provides a joint structure of a handle of a seat recliner for a car, including a column 12 provided on a handle body 10 of a handle 1 of a handle of a seat recliner for A matched angle adjuster mandrel 3; a first cavity 121 and a second cavity 122 which are sequentially communicated are arranged inside the upright post 12, and the diameter of the first cavity 121 is larger than that of the second cavity 122; a pair of side walls of the first cavity 121 are symmetrically provided with elastically deformable first limiting protrusions 13, and the height of the first limiting protrusions 13 is smaller than or equal to the difference between the radius of the first cavity 121 and the radius of the second cavity 122; a gap between the first limit protrusion 13 and the second cavity 122 forms a first limit groove 14; the angle adjuster mandrel 3 comprises a first long shaft 31 and a second long shaft 32, the diameter of the first long shaft 31 is adapted to the diameter of the second cavity 122, and the diameter of the second long shaft 32 is adapted to the diameter of the first cavity 121; the side wall of the first long shaft 31 is provided with a second limiting protrusion 311 corresponding to the first limiting groove 14, a second limiting groove 312 is formed by a gap between the second limiting protrusion 311 and the second long shaft 32, and the second limiting groove 312 corresponds to the first limiting protrusion 13; the angle adjuster mandrel 3 is pushed into the upright post 12, the second limiting protrusion 311 abuts against the first limiting protrusion 13 to generate elastic deformation under the action of thrust, so that the second limiting protrusion 311 crosses the first limiting protrusion 13 to be clamped with the first limiting groove 14, meanwhile, the first limiting protrusion 13 recovers the elastic deformation to be clamped with the second limiting groove 312, and the fixed connection between the upright post 12 and the angle adjuster mandrel 3 is realized.

As can be seen from the above, the present invention, by designing the adaptive clamping structure for the inner structure of the upright post and the shape of the angle adjuster mandrel, when the angle adjuster mandrel is pushed into the upright post, the second limiting protrusion of the angle adjuster mandrel abuts against the first limiting protrusion inside the upright post under the thrust action, so that the first limiting protrusion is elastically deformed, thereby the second limiting protrusion of the angle adjuster mandrel is clamped with the first limiting groove inside the upright post over the first limiting protrusion inside the upright post, and at the same time, the first limiting protrusion inside the upright post recovers the elastic deformation to be clamped with the second limiting groove of the angle adjuster mandrel, thereby realizing the fixed connection between the upright post and the angle adjuster mandrel, compared with the prior art, the technical proposal of the present invention omits the clamp spring for further fixing the handle and the angle adjuster, thereby avoiding the scratch of the mounting tool to the plastic seat guard plate during the installation of the clamp spring and the large gap between the handle and the guard plate reserved for ensuring the assembly space of the clamp spring, the appearance of the handle is more beautiful; in addition, the metal handle is omitted, the seat guard plate is prevented from being scratched in the installation process of the metal handle, a plurality of inspection processes after the metal handle is welded are omitted, the installation process of the automobile seat angle adjuster handle is simplified, the automobile seat angle adjuster handle and the angle adjuster can be quickly and stably installed, and the installation efficiency is improved.

In an embodiment of the present invention, fig. 18 is a cross-sectional view of another handle of an angle adjuster for a car seat provided in the embodiment of the present invention, as shown in fig. 13 and fig. 18, the first limiting protrusion 13 is provided with a first inclined plane 131 facing the first cavity 121, and the first inclined plane 131 is used as a guiding inclined plane, so as to reduce the resistance of the second limiting protrusion 311 against the first limiting protrusion 13, thereby facilitating installation.

In an embodiment of the present invention, fig. 19 is a cross-sectional view of a handle for a seat recliner of a car provided by an embodiment of the present invention, fig. 20 is a schematic structural view of the handle for a seat recliner of a car provided by an embodiment of the present invention at another viewing angle, fig. 21 is a partially enlarged view of fig. 20, and as shown in fig. 19 to 21, supporting protrusions 15 are disposed on another pair of sidewalls of the second cavity 122. The support protrusions 15 are provided for the purpose of: on the one hand, if the support protrusion 15 is not provided, the entire side wall where the support protrusion 15 is located is in contact with the side surface corresponding to the first long shaft 31, and the friction force is large, which is not favorable for installation. On the other hand, during the production of the injection-molded part, the entire side wall on which the supporting projections 15 are located may be deformed uncontrollably, which may lead to increased handling forces during assembly and increased uncontrollable behavior.

In an embodiment of the present invention, the supporting protrusion 15 is provided with a draft angle, which facilitates the separation of the column 12 from the mold in the injection molding process.

In an embodiment of the present invention, as shown in fig. 10, a reinforcing rib 11 is further disposed between the outer sidewall of the pillar 12 and the handle body 10 to enhance the connection strength between the pillar 12 and the handle body 10, and avoid insufficient torque transmission or cracking of the plastic part.

In an embodiment of the present invention, as shown in fig. 19 and 22, the surfaces of the pair of sidewalls of the second cavity 122 are symmetrically provided with second slopes 1221. The purpose of the second slope 1221 is to: on one hand, if the second inclined surface 1221 is not provided, the whole plane where the second inclined surface 1221 is located is in contact with the side surface corresponding to the first long shaft 31, so that the friction force is large, and the installation is not facilitated; on the other hand, in the manufacturing process of injection molding, the whole plane that second inclined plane 1221 was located may produce uncontrollable deformation, if do not have second inclined plane 1221, the side contact that the uncontrollable deformation on the whole plane is direct with first major axis 31 corresponds can lead to the operating force increase during the assembly, increases uncontrollable nature.

Further, because the setting of second inclined plane 1221, the mould need set up the arch that the shape matches corresponding to the position of second inclined plane 1221, for further convenience part this mould with stand 12, make the following improvement in an embodiment of the utility model: as also shown in fig. 19, 21 and 22, the first limiting protrusion 13 is provided with a third inclined surface 132 corresponding to the second inclined surface 1221, so as to facilitate the demolding of the column 12.

In an embodiment of the present invention, fig. 23 is a B-B cross-sectional view of fig. 16, as shown in fig. 23, in the assembling direction, a first assembling gap 17 is reserved between the front end of the first long shaft 31 and the second cavity 122, so as to prevent the handle 1 of the angle adjuster of the car seat from being pushed away, and the chemical resistance and the mechanical property of the handle of the angle adjuster of the car seat are greatly weakened by the pushing away portion, thereby reducing the service life of the handle of the angle adjuster of the car seat.

In an embodiment of the present invention, as shown in fig. 14, 15 and 23, in the assembling direction, a cylindrical shaft 33 is further provided behind the second long shaft 32; in the assembly direction, reserve suitable second fitting gap 18 between the terminal surface of cylindrical shaft 33 and stand 12, by the first spacing arch 13 of the spacing protruding 311 jack-up of second during avoiding the assembly, when not having crossed second spacing arch 311 completely, cylindrical shaft 33 just pushed up the terminal surface to stand 12, lead to the unable joint of first spacing arch 13 and second spacing groove 312, the unable joint of the spacing protruding 311 of second and first spacing groove 14. Specifically, the recliner 4 is mounted on the cylindrical shaft 33. In order to more intuitively illustrate the positional relationship among the first long axis 31, the second long axis 32, and the cylindrical axis 33, fig. 14 illustrates the positional relationship by using 2 broken lines as the boundary lines between the three.

In an embodiment of the invention, the pillar 12 comprises a cylinder or a rectangle, and the recliner mandrel 3 correspondingly comprises a cylinder or a rectangle. Specifically, if the column 12 is cylindrical, the angle adjuster spindle 3 is cylindrical; if the column 12 is rectangular, the recliner mandrel 3 is rectangular, and it should be noted that the present application does not further limit the shapes of the column 12 and the recliner mandrel 3.

Fig. 24 is an application scene schematic diagram of the clamping structure of the car seat angle adjuster handle, as shown in fig. 24, the angle adjuster 4 is installed on the angle adjuster mandrel 3, and the angle adjuster mandrel 3 is installed together with the upright post 12 on the car seat angle adjuster handle 1 after passing through the plastic seat guard plate 2.

To sum up, the technical scheme of the utility model the spare part quantity and the assembly process that car seat constitutes have been reduced, have avoided the risk of fish tail backplate, have simplified the installation of car seat angle modulation ware handle, have realized quick, the stable installation of car seat's angle modulation ware handle and angle modulation ware, have promoted the installation effectiveness, make the outward appearance of handle more pleasing to the eye moreover.

It should be noted that the above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and equivalents can be made in the technical solutions described in the foregoing embodiments, or some technical features thereof can be replaced. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.

Claims (10)

1. The clamping structure of the automobile seat angle adjuster handle is characterized by comprising an upright post (12) arranged on a handle body (10) of the automobile seat angle adjuster handle (1) and an angle adjuster mandrel (3) matched with the upright post (12);

a first cavity (121) and a second cavity (122) which are sequentially communicated are arranged in the upright post (12), and the diameter of the first cavity (121) is larger than that of the second cavity (122); a pair of side walls of the first cavity (121) are symmetrically provided with elastically deformable first limiting protrusions (13), and the height of each first limiting protrusion (13) is smaller than or equal to the difference between the radius of the first cavity (121) and the radius of the second cavity (122); a first limit groove (14) is formed by a gap between the first limit bulge (13) and the second cavity (122);

the angle adjuster mandrel (3) comprises a first long shaft (31) and a second long shaft (32), the diameter of the first long shaft (31) is adapted to the diameter of the second cavity (122), and the diameter of the second long shaft (32) is adapted to the diameter of the first cavity (121); a second limiting protrusion (311) is arranged on the side wall of the first long shaft (31) corresponding to the first limiting groove (14), a second limiting groove (312) is formed by a gap between the second limiting protrusion (311) and the second long shaft (32), and the second limiting groove (312) corresponds to the first limiting protrusion (13);

the angle adjuster mandrel (3) is pushed into the upright post (12), the second limiting protrusion (311) is abutted against the first limiting protrusion (13) to generate elastic deformation under the action of thrust, so that the second limiting protrusion (311) crosses the first limiting protrusion (13) to be clamped with the first limiting groove (14), and meanwhile, the first limiting protrusion (13) recovers the elastic deformation to be clamped with the second limiting groove (312), and the upright post (12) is fixedly connected with the angle adjuster mandrel (3).

2. The latch structure of a handle for a seat recliner for an automobile according to claim 1,

the first limiting bulge (13) is provided with a first inclined surface (131) facing the first cavity (121).

3. The latch structure of handle for seat recliner of automobile according to claim 1 wherein the other pair of sidewalls of said second cavity (122) are provided with a support protrusion (15).

4. The snap structure of a handle of a recliner for a seat of a vehicle as claimed in claim 3, wherein said supporting protrusion (15) is provided with draft.

5. The clamping structure of the handle of the automobile seat angle adjuster is characterized in that a reinforcing rib (11) is further arranged between the outer side wall of the upright post (12) and the handle body (10).

6. The latch structure of handle for seat recliner of vehicle as claimed in claim 1 wherein the surfaces of a pair of sidewalls of said second cavity (122) are symmetrically provided with a second slope (1221).

7. The latch structure of the handle of the recliner for the seat of the vehicle as claimed in claim 6, wherein the first position-limiting protrusion (13) is provided with a third inclined surface (132) corresponding to the second inclined surface (1221).

8. The latch structure of the handle of the seat recliner for the vehicle of claim 1 wherein a first fitting gap (17) is reserved between a front end of the first long shaft (31) and the second cavity (122) in a fitting direction.

9. The latch structure of the handle of the seat recliner for the vehicle of claim 1 wherein a cylindrical shaft (33) is further provided behind the second long shaft (32) in the assembly direction, and a suitable second assembly gap (18) is reserved between the cylindrical shaft (33) and the end surface of the pillar (12).

10. The snap-fit arrangement of the handle of a seat recliner for vehicles according to claim 1 wherein said post (12) comprises a cylindrical or rectangular shape and said recliner spindle (3) comprises a cylindrical or rectangular shape, respectively.

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