Commercial vehicle seat inclination angle adjusting mechanism

Abstract

The utility model relates to the technical field of automobile accessories, in particular to a commercial vehicle seat inclination angle adjusting mechanism which comprises a shock absorber assembly, a toothed plate connecting rod assembly, a rotating frame assembly and a connecting rod. The toothed plate connecting rod assembly is installed in a round hole in the front end of the rotating frame assembly and can rotate relative to the rotating frame assembly, the rear end of the rotating frame assembly is rotationally connected with the shock absorber assembly through a step bolt, the upper end of a connecting rod is rotationally connected with the toothed plate connecting rod assembly and the shock absorber assembly through step bolts, and a four-connecting-rod mechanism is formed. According to the commercial vehicle seat inclination angle adjusting mechanism, the toothed plate and four-connecting-rod structure is adopted, the unlocking direction can be flexibly adjusted through the structure, clockwise unlocking and anticlockwise unlocking can be achieved only by adjusting the assembling direction of the locking cam, modification is small, parts are completely shared, cost does not need to be increased, and the commercial vehicle seat inclination angle adjusting mechanism is suitable for popularization and application. In addition, the mechanism can be shared by manual and electric inclination angle adjusting platforms, investment of part molds and tools is reduced, and compatibility is high.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile accessories, in particular to a commercial vehicle seat inclination adjustment mechanism. Background Art

[0002] The seat cushion reclining mechanism can help passengers adjust their sitting posture and effectively improve seat comfort. Therefore, most commercial vehicle seats are equipped with this function. However, the layout and unlocking methods of the reclining handles of different manufacturers are very different.

[0003] The common structures of existing reclining mechanisms are toothed plates and core components. Both structures can only unlock in one direction and have poor adaptability. Once the unlocking direction needs to be changed according to the position of the seat reclining handle, a lever structure needs to be added to change the unlocking direction or adjust the reclining mechanism itself. The amount of modification is large, the verification cycle is long, and the cost is high. Therefore, we propose a commercial vehicle seat reclining mechanism. Utility Model Content

[0004] A technical problem to be solved by the present application is to provide a seat inclination adjustment mechanism with a flexibly adjustable unlocking direction.

[0005] In order to solve the above technical problems, the embodiment of the present application provides a commercial vehicle seat tilt adjustment mechanism, including a shock absorber assembly, and also including a toothed plate connecting rod assembly, a rotating frame assembly and a connecting rod;

[0006] The toothed plate connecting rod assembly is installed in the circular hole at the front end of the rotating frame assembly and can rotate relative to the rotating frame assembly. The rear end of the rotating frame assembly is rotatably connected to the shock absorber assembly through a step bolt, and the upper end of the connecting rod is rotatably connected to the toothed plate connecting rod assembly and the shock absorber assembly through a step bolt, forming a four-bar linkage.

[0007] In some embodiments, the tooth plate connecting rod assembly includes a tooth plate, a left connecting rod bracket, a bushing, a cross tube and a right connecting rod bracket. The left connecting rod bracket and the right connecting rod bracket are respectively pressed together with the bushing and fixedly connected to the cross tube by welding. The tooth plate is fixedly connected to the left connecting rod bracket and the cross tube by welding.

[0008] In some embodiments, the rotating frame assembly includes a left rotating bracket, a right rotating bracket, a left B plate, a right B plate, and a front support plate;

[0009] The left B plate is welded with a lock tooth rotating shaft, a rivet, and a cam rotating shaft, and a cover plate is also provided on the left B plate, and the cover plate is fixedly connected with the lock tooth rotating shaft, the rivet, and the cam rotating shaft by riveting;

[0010] A locking tooth assembly and a locking cam assembly are arranged between the cover plate and the left B plate, the cover plate restricts the locking tooth assembly and the locking cam assembly from swinging left and right, the locking tooth assembly is rotationally connected to the locking tooth rotating shaft, and the locking cam assembly is rotationally connected to the cam rotating shaft;

[0011] A cam locking spring and a lock tooth reset spring are arranged on the cover plate, one end of the cam locking spring is mounted on the cover plate, and the other end is mounted on the locking cam assembly, and one end of the lock tooth reset spring is mounted on the cover plate, and the other end is clamped in the lock tooth assembly.

[0012] In some embodiments, the locking cam assembly includes a bushing, a cam and an unlocking pin, the bushing is riveted to the cam, and the unlocking pin is welded to the cam.

[0013] In some embodiments, an unlocking piece, a retaining spring and an unlocking piece torsion spring are provided on the outside of the rotating frame assembly, the unlocking piece is rotatably connected to the cam rotating shaft, the retaining spring is clamped to the cam rotating shaft, one end of the unlocking piece torsion spring is fixed on the circular hole of the left B plate, and the other end is fixed on the unlocking piece.

[0014] In some embodiments, a handle and a handle base are also provided on the outside of the rotating frame assembly. The handle base is fixedly connected to the left B plate by self-tapping screws. The handle and the handle base are rotatably connected, and a pull wire is fixed between the handle and the unlocking piece.

[0015] The utility model has at least the following beneficial effects:

[0016] Different from the prior art, the inclination adjustment mechanism demonstrated in this application adopts a toothed plate and a four-link structure, which can flexibly adjust the unlocking direction, and can realize both clockwise unlocking and counterclockwise unlocking. It can be achieved by simply adjusting the assembly direction of the locking cam. The changes are small, and the parts are completely shared without increasing costs. In addition, the mechanism can realize the sharing of manual and electric inclination adjustment platforms, reduce the investment in parts molds and tooling, and has high compatibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the toothed plate connecting rod assembly of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the shock absorber assembly of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the rotating frame assembly of the utility model;

[0021] Figure 5 For this utility model Figure 4 Schematic diagram of local explosion structure;

[0022] Figure 6 This is a schematic diagram of the structure of the locking cam assembly of the utility model;

[0023] Figure 7 This is a schematic diagram of the seat locking structure of the utility model;

[0024] Figure 8 This is a schematic diagram of the overall structure of Example 2 of the utility model.

[0025] In the figure: 1. tooth plate connecting rod assembly; 2. shock absorber assembly; 3. rotating frame assembly; 4. connecting rod; 5. step bolt; 6. tooth plate; 7. connecting rod bracket left; 8. bushing; 9. cross tube; 10. connecting rod bracket right; 12. rotating bracket left; 13. rotating bracket right; 14. left B plate; 15. right B plate; 16. front end support plate; 17. lock tooth rotating shaft; 18. rivet; 19. cam rotating shaft; 20. lock tooth assembly; 21. locking cam assembly; 22. cover plate; 23. cam locking spring; 24. lock tooth return spring; 25. cam; 26. unlocking pin; 27. unlocking plate; 28. retaining spring; 29. ​​unlocking plate torsion spring; 30. handle; 31. handle base; 32. pull wire. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Example 1

[0028] See also Figure 1-7 The utility model provides a technical solution: Figure 1 As shown, a commercial vehicle seat tilt adjustment mechanism is composed of a toothed plate connecting rod assembly 1, a shock absorber assembly 2, a rotating frame assembly 3, and a connecting rod 4. The toothed plate connecting rod assembly 1 is installed in the circular hole at the front end of the rotating frame assembly 3 and can rotate relatively. The rear end of the rotating frame assembly 3 is rotatably connected to the shock absorber assembly 2 through a step bolt 5. The upper end of the connecting rod 4 is rotatably connected to the toothed plate connecting rod assembly 1 through the step bolt 5, and the lower end of the connecting rod 4 is rotatably connected to the shock absorber assembly 2 through the step bolt 5, forming a four-bar linkage.

[0029] As attached Figure 2As shown, the toothed plate connecting rod assembly 1 is composed of a toothed plate 6, a left connecting rod bracket 7, a metal bushing 8, a cross tube 9 and a right connecting rod bracket. The left connecting rod bracket 7 and the right connecting rod bracket 10 are respectively press-fitted with the metal bushing 8 and then fixedly connected with the cross tube 9 by welding. The toothed plate 6 is fixedly connected with the left connecting rod bracket 7 and the cross tube 9 by welding.

[0030] As attached Figure 3 As shown, a nut 11 is welded on the shock absorber assembly 2, and the shock absorber body structure remains consistent with the original shock absorber.

[0031] As attached Figure 4 As shown, the rotating frame assembly 3 is welded together by a left rotating bracket 12 , a right rotating bracket 13 , a left B plate 14 , a right B plate 15 and a front end support plate 16 .

[0032] As attached Figure 5 As shown, a lock tooth rotating shaft 17, a rivet 18, and a cam rotating shaft 19 are welded on the left B plate 14, and the cover plate 22 is fixedly connected with the lock tooth rotating shaft 17, the rivet 18, and the cam rotating shaft 19 by riveting. A lock tooth assembly 20 and a locking cam assembly 21 are arranged between the cover plate 22 and the left B plate 14, and the cover plate 22 is used to prevent the lock tooth assembly 20 and the locking cam assembly 21 from swinging left and right. The lock tooth assembly 20 is rotationally connected to the lock tooth rotating shaft 17. The locking cam assembly 21 is rotationally connected to the cam rotating shaft 19. A cam locking spring 23 and a lock tooth reset spring 24 are arranged on the cover plate 22. One end of the cam locking spring 23 is mounted on the cover plate 22, and the other end is mounted on the locking cam assembly 21, so as to apply locking pressure to the locking cam assembly 21. One end of the lock tooth reset spring 24 is mounted on the cover plate 22, and the other end is clamped on the lock tooth assembly 20, so as to provide reset force to the lock tooth assembly 20.

[0033] As attached Figure 6 As shown, the locking cam assembly 21 is composed of a bushing 8, a cam 25 and an unlocking pin 26. The bushing 8 is connected to the cam 25 by riveting, and the unlocking pin 26 is fixedly connected to the cam 25 by welding.

[0034] As attached Figure 7As shown, an unlocking piece 27, a retaining spring 28 and an unlocking piece torsion spring 29 are arranged on the outside of the rotating frame assembly 3. The unlocking piece 27 is rotatably connected to the cam rotating shaft 19, and the retaining spring 28 is clamped to the cam rotating shaft 19 to prevent the unlocking piece 27 from slipping out in the left and right directions. One end of the unlocking piece torsion spring 29 is fixed to the round hole of the left B plate 14, and the other end is fixed to the unlocking piece 27 to provide a restoring torque for the unlocking piece. A handle 30 and a handle base 31 are also arranged on the outside of the rotating frame assembly 3. The handle base 31 is fixedly connected to the left B plate 14 by a self-tapping screw 33, and the handle 30 and the handle base 31 are rotatably connected. One end of the pull wire 32 is fixedly connected to the handle 30, and the other end is fixedly connected to the unlocking piece 27. When the handle 30 rotates clockwise, the unlocking piece 27 is driven to rotate counterclockwise through the pull wire 32, and the unlocking piece 27 contacts the unlocking pin 26 after rotating a certain angle, and the unlocking pin 26 drives the cam 25 to unlock counterclockwise. At this time, there is a gap between the cam 25 and the lock tooth assembly 20, and the lock tooth assembly 20 is disengaged from the tooth plate under the action of the reset torque of the lock tooth reset spring 24. At this time, the four-link can rotate to adjust the seat cushion angle.

[0035] When the inclination adjustment handle is arranged at the rear end of the cam rotating shaft 19 due to need, other parts do not need to be adjusted at this time. Only the unlocking plate torsion spring 29 and the assembly direction of the cam 25 need to be changed to adjust the unlocking direction.

[0036] Example 2

[0037] See also Figure 8 The utility model provides a technical solution: different from Example 1, the inclination adjustment mechanism of the present application can also realize the sharing of manual and electric platforms. When electric inclination adjustment is required, the manual locking mechanism and the unlocking mechanism can be cancelled, and the motor assembly 34, the motor cover plate 35 and the electric gear plate 36 can be replaced, which can reduce the development time and cost of new parts and ensure flexible and stable use.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A commercial vehicle seat tilt adjustment mechanism, comprising a shock absorber assembly (2), characterized in that: It also includes a toothed plate connecting rod assembly (1), a rotating frame assembly (3) and a connecting rod (4); The toothed plate connecting rod assembly (1) is installed in a circular hole at the front end of the rotating frame assembly (3) and can rotate relative to the rotating frame assembly (3). The rear end of the rotating frame assembly (3) is rotatably connected to the shock absorber assembly (2) via a step bolt (5), and the upper end of the connecting rod (4) is rotatably connected to the toothed plate connecting rod assembly (1) and the shock absorber assembly (2) via the step bolt (5), thereby forming a four-bar linkage.

2. The commercial vehicle seat inclination adjustment mechanism according to claim 1, characterized in that: The toothed plate connecting rod assembly (1) comprises a toothed plate (6), a left connecting rod bracket (7), a bushing (8), a transverse tube (9) and a right connecting rod bracket (10); the left connecting rod bracket (7) and the right connecting rod bracket (10) are respectively pressed together with the bushing (8) and fixedly connected to the transverse tube (9) by welding; the toothed plate (6) is fixedly connected to the left connecting rod bracket (7) and the transverse tube (9) by welding.

3. The commercial vehicle seat inclination adjustment mechanism according to claim 2, characterized in that: The rotating frame assembly (3) comprises a left rotating bracket (12), a right rotating bracket (13), a left B plate (14), a right B plate (15) and a front end support plate (16); A lock tooth rotating shaft (17), a rivet (18), and a cam rotating shaft (19) are welded on the left side B plate (14), and a cover plate (22) is also provided on the left side B plate (14), and the cover plate (22) is fixedly connected to the lock tooth rotating shaft (17), the rivet (18), and the cam rotating shaft (19) by riveting; A locking tooth assembly (20) and a locking cam assembly (21) are arranged between the cover plate (22) and the left B plate (14); the cover plate (22) limits the locking tooth assembly (20) and the locking cam assembly (21) from swinging left and right; the locking tooth assembly (20) and the locking tooth rotating shaft (17) are rotationally connected, and the locking cam assembly (21) and the cam rotating shaft (19) are rotationally connected; A cam locking spring (23) and a lock tooth reset spring (24) are provided on the cover plate (22); one end of the cam locking spring (23) is mounted on the cover plate (22), and the other end is mounted on the locking cam assembly (21); one end of the lock tooth reset spring (24) is mounted on the cover plate (22), and the other end is clamped in the lock tooth assembly (20).

4. The commercial vehicle seat inclination adjustment mechanism according to claim 3, characterized in that: The locking cam assembly (21) comprises a bushing (8), a cam (25) and an unlocking pin (26); the bushing (8) and the cam (25) are connected by riveting, and the unlocking pin (26) and the cam (25) are fixedly connected by welding.

5. The commercial vehicle seat inclination adjustment mechanism according to claim 4, characterized in that: An unlocking piece (27), a retaining spring (28) and an unlocking piece torsion spring (29) are arranged on the outside of the rotating frame assembly (3); the unlocking piece (27) is rotatably connected to the cam rotating shaft (19); the retaining spring (28) is engaged with the cam rotating shaft (19); one end of the unlocking piece torsion spring (29) is fixed to the circular hole of the left B plate (14), and the other end thereof is fixed to the unlocking piece (27).

6. The commercial vehicle seat inclination adjustment mechanism according to claim 5, characterized in that: A handle (30) and a handle base (31) are also provided on the outside of the rotating frame assembly (3); the handle base (31) is fixedly connected to the left B plate (14) by means of self-tapping screws (33); the handle (30) and the handle base (31) are rotatably connected, and a pull wire (32) is fixed between the handle (30) and the unlocking piece (27).

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