Table plate follow-up mechanism

Abstract

The utility model relates to the field of automobiles, and particularly discloses a table plate follow-up mechanism which comprises a small table plate, a supporting assembly and a follow-up structure, the small table plate is connected with a seat backrest through the supporting assembly, the follow-up structure comprises a pull rope assembly and a hypoid gear, and the hypoid gear rotates along with rotation of the seat backrest. The inhaul cable assembly comprises an inhaul cable assembly, a driving worm, a follow-up worm and an eccentric gear, the supporting assembly comprises a first supporting rod and a second supporting rod, the eccentric gear is arranged between the first supporting rod and the second supporting rod, and the two ends of the movable end of the inhaul cable assembly are fixedly connected with the driving worm and the follow-up worm respectively. The hypoid gear is in meshed connection with the driving worm, and the eccentric gear is in meshed connection with the follow-up worm. According to the follow-up structure, the small table plate can still keep the horizontal angle or the preset angle when the angle of the seat backrest is adjusted, and the follow-up structure has the advantages of being low in cost, weight and noise.

Description

Technical Field

[0001] The utility model relates to the field of automobiles, and particularly relates to in-vehicle accessories. Background Art

[0002] At present, a small table is usually arranged on the back of an automobile seat. The small table is rotationally connected with the seat back by a bracket and is usually opened by electric drive or by the self-gravity of the small table. If the small table is opened by electric drive, the angle between the small table and the seat back can be adjusted according to actual conditions. However, the electric drive method has high cost, the small table bears a large weight, and there is a lot of noise during use. If the small table is opened by its own gravity, since the angle between the small table and the seat back is fixedly set, when the angle of the seat back is adjusted, it will have a certain impact on the use of the small table by the rear-row passengers.

[0003] The technical problem to be solved by this application is: how to design a small table structure that can adjust the angle between itself and the seat back along with the adjustment of the seat back angle. Summary of the Utility Model

[0004] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide a table following mechanism.

[0005] The technical solution adopted by the utility model is: a table following mechanism, including a small table, a support assembly and a following structure. The small table is connected with the seat back through the support assembly. The following structure includes a cable assembly and a hypoid gear. The hypoid gear rotates as the seat back rotates. The cable assembly includes a cable assembly, a driving worm, a following worm and an eccentric gear. The support assembly includes a first support rod and a second support rod. The eccentric gear is arranged between the first support rod and the second support rod. The movable ends of the cable assembly are respectively fixed to the driving worm and the following worm. The hypoid gear is meshed and connected with the driving worm. The eccentric gear is meshed and connected with the following worm.

[0006] The hypoid gear rotates as the seat back rotates. The driving worm and the following worm rotate as the hypoid gear rotates, thereby driving the eccentric gear to rotate. Since the eccentric gear is arranged between the first support rod and the second support rod, the gap between the first support rod and the second support rod is finally changed, ensuring the horizontal angle or preset angle of the small table.

[0007] In some embodiments, the follower structure includes a rotating assembly. The rotating assembly includes a seat cushion fixing bracket, a moving slider, and a housing. The seat cushion fixing bracket is fixedly connected to the seat cushion frame. The moving slider is connected to the seat cushion fixing bracket through a fixing bolt, and the fixing bolt is fixedly connected to the seat cushion fixing bracket. The moving slider is provided with a moving chute, and the fixing bolt is slidably limited relative to the moving chute. The moving slider is fixedly connected to the hypoid gear, and the hypoid gear is rotationally limited within the housing. The housing is fixedly connected to the seat back. The cooperation between the fixing bolt and the moving chute can offset the eccentric rotation of the seat back.

[0008] In some embodiments, the housing includes a lower housing. The lower housing is provided with a rotating groove, and the hypoid gear is rotationally limited within the rotating groove. The driving worm is meshed and connected with the hypoid gear within the rotating groove. The rotating groove can define the meshing connection between the hypoid gear and the driving worm.

[0009] In some embodiments, the lower housing is provided with a movable groove. The rotating groove and the movable groove are communicated, and the axis of the movable groove intersects with the rotating groove. The cable assembly includes a limiting block. The limiting block is fixedly connected to the fixed end of the cable assembly. The outer wall of the limiting block is provided with moving teeth, and the inner wall of the movable groove is provided with uniformly arranged fixed teeth. The moving teeth are meshed and connected with the fixed teeth. The cooperation between the movable groove and the limiting block can cooperate with the fixing of cable assemblies of various lengths.

[0010] In some embodiments, the second support rod is hollow and provided with a support groove at one end close to the small table. One end of the cable assembly close to the small table is arranged within the second support rod, and the follower worm is rotationally limited within the support groove. The hollow second support rod can hide the cable assembly, making the appearance more beautiful.

[0011] In some embodiments, the eccentric gear is provided with a gear end and an abutting end. The abutting end abuts against the bottom of the first support rod, and the gear end is meshed and connected with the follower worm.

[0012] In some embodiments, the cable assembly is provided with a universal joint near the small table. The universal joint is arranged at the connection between the second support rod and the seat back. The universal joint can prevent the cable assembly from being bent excessively during the unfolding or folding of the small table, resulting in torque transmission failure.

[0013] The beneficial effects of the present utility model are as follows:

[0014] This kind of table board follow-up mechanism can keep the small table board at a horizontal angle or a preset angle even when the seat backrest angle is adjusted by setting a follow-up structure, in which all mechanical parts are used in cooperation. The hypoid gear rotates with the rotation of the seat backrest, and the driving worm and the follower worm rotate with the rotation of the hypoid gear, thereby driving the eccentric gear to rotate, changing the gap between the first support rod and the second support rod, and finally changing the angle of the small table board. This structure takes into account the advantages of low cost, low weight and low noise. Brief Description of the Drawings

[0015] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 is a schematic diagram of the structure of the rotating assembly;

[0017] Figure 3 is a schematic diagram of the structure of the cable assembly;

[0018] Figure 4 is a schematic cross-sectional view of the connection structure between the support assembly and the cable assembly;

[0019] The reference numerals in the drawings correspond to the names as follows: 1, small table board; 2, seat backrest; 3, rotating assembly; 4, cable assembly; 5, support assembly; 31, seat cushion fixing bracket; 32, moving slider; 33, fixing bolt; 34, housing; 35, hypoid gear; 36, moving slide bar; 321, moving chute; 341, lower housing; 342, rotating groove; 343, movable groove; 41, limit block; 42, cable assembly; 43, driving worm; 44, follower worm; 45, eccentric gear; 46, universal joint; 51, first support rod; 52, second support rod. Detailed Description of the Preferred Embodiments

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] Please refer to Figure 1 , the present invention provides a technical solution: a table board follow-up mechanism, including a follow-up structure, a small table board 1 and a support assembly 5. The small table board 1 is connected to the seat backrest 2 through the support assembly 5, and a part of the follow-up structure is arranged on the seat cushion skeleton.

[0022] Please refer to Figure 2, the follower assembly includes a cable assembly 4 and a rotating assembly 3. The rotating assembly 3 includes a seat cushion fixing bracket 31, a moving slider 32, a fixing bolt 33, a housing 34, and a hypoid gear 35. The seat cushion fixing bracket 31 is fixedly connected to the seat cushion frame. The moving slider 32 is connected to the seat cushion fixing bracket 31 through the fixing bolt 33, and the fixing bolt 33 is fixedly connected to the seat cushion fixing bracket 31. The moving slider 32 is provided with a moving chute 321, and the fixing bolt 33 is relatively limited in sliding within the moving chute 321. The moving slider 32 is fixedly connected to the hypoid gear 35 through a moving slide bar 36. One end of the moving slide bar 36 is fixedly connected to the moving slider 32, and the other end is fixedly connected to the hypoid gear 35. The hypoid gear 35 is limited in rotation within the housing 34. The housing 34 is fixedly connected to the seat back 2 through a backrest fixing bracket. The housing 34 includes an upper housing and a lower housing 341. The upper housing and the lower housing 341 are fixedly connected correspondingly. The upper housing is provided with a through hole, and the side surface of the hypoid gear 35 is exposed through the through hole. The moving slide bar 36 passes through the through hole and is fixedly connected to the side surface of the hypoid gear 35. The lower housing 341 is provided with a rotating groove 342 and a movable groove 343. The hypoid gear 35 is limited in rotation within the rotating groove 342. The rotating groove 342 and the movable groove 343 are communicated. The axis of the movable groove 343 intersects with the rotating groove 342. The inner wall of the movable groove 343 is provided with uniformly arranged fixing teeth. In order to offset the eccentric rotation of the seat back 2, when the hypoid gear 35 rotates, the moving slide bar 36 and the moving slider 32 will relatively slide with the fixing bolt 33 as a fixed point.

[0023] Please refer to Figure 3 , the cable assembly 4 includes a limit block 41, a cable assembly 42, a driving worm 43, a follower worm 44, and an eccentric gear 45. The limit block 41 is fixedly connected to the fixed end of the cable assembly 42. The outer wall of the limit block 41 is provided with moving teeth, and the moving teeth are meshed and connected with the fixing teeth. The limit block 41 can adjust the specific position of the limit block 41 within the movable groove 343 by adjusting the connection between the moving teeth and the fixing teeth at different positions within the movable groove 343, so as to cooperate with the fixation of cable assemblies 42 of different lengths. The two ends of the movable end of the cable assembly 42 are respectively fixedly connected to the driving worm 43 and the follower worm 44. The driving worm 43 is meshed and connected with the hypoid gear 35 within the rotating groove 342. When the hypoid gear 35 rotates, the driving worm 43 rotates accordingly, thereby driving the follower worm 44 to rotate.

[0024] Please refer to Figure 4, the support assembly 5 includes a first support rod 51 and a second support rod 52. One end of the first support rod 51 is rotatably connected to the seat backrest 2, and the other end is rotatably connected to the small table 1. One end of the second support rod 52 is rotatably connected to the seat backrest 2, and the other end is rotatably connected to the small table 1. The second support rod 52 is arranged below the first support rod 51. Both sides of the small table 1 are provided with the first support rod 51 and the second support rod 52. The eccentric gear 45 is arranged between the first support rod 51 and the second support rod 52 and is rotatably connected to the small table 1. The eccentric gear 45 is provided with a gear end and an abutting end. The abutting end abuts against the bottom of the first support rod 51, and the gear end is meshed and connected with the follower worm 44. The second support rod 52 is hollow and a support groove is provided at one end close to the small table 1. One end of the cable assembly 42 close to the small table 1 is arranged in the second support rod 52. The follower worm 44 is limited to rotate in the support groove. When the follower worm 44 rotates, the eccentric gear 45 rotates, thereby changing the specific position where the abutting end abuts against the first support rod 51, and finally changing the distance between the first support rod 51 and the second support rod 52, ensuring that when the seat backrest 2 adjusts the angle, the small table 1 remains at a horizontal angle or a preset angle to facilitate the operation of the rear row passengers on the small table 1.

[0025] In order to prevent the cable assembly 42 from being bent excessively during the unfolding or folding process of the small table 1, resulting in torque transmission failure, in this embodiment, preferably, a universal joint 46 is provided at the cable assembly 42 near the small table 1, and the universal joint 46 is arranged at the connection between the second support rod 52 and the seat backrest 2.

[0026] The working principle and usage process of the present utility model: When the seat backrest 2 adjusts the angle, at this time the small table 1 is in the open state, the housing 34 changes its position as it follows the rotation of the seat backrest 2, and a relative movement occurs between the housing 34 and the hypoid gear 35. The hypoid gear 35 rotates in the housing 34, thereby driving the driving worm 43 and the follower worm 44 to rotate. The eccentric gear 45 rotates, and the gap between the first support rod 51 and the second support rod 52 is adjusted, and finally the inclination angle of the small table 1 relative to the seat backrest 2 is adjusted.

[0027] Finally, it should be noted that the above are only the preferred examples of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A tabletop follower mechanism, comprising a small tabletop (1) and a support assembly (5), wherein the small tabletop (1) is connected to a seat backrest (2) through the support assembly (5), and is characterized in that, It further includes a follow-up structure. The follow-up structure includes a cable assembly (4) and a hypoid gear (35). The hypoid gear (35) rotates as the seat backrest (2) rotates. The cable assembly (4) includes a cable assembly (42), a driving worm (43), a follower worm (44), and an eccentric gear (45). The support assembly (5) includes a first support rod (51) and a second support rod (52). The eccentric gear (45) is arranged between the first support rod (51) and the second support rod (52). The movable ends of both ends of the cable assembly (42) are fixedly connected to the driving worm (43) and the follower worm (44) respectively. The hypoid gear (35) is meshed and connected with the driving worm (43). The eccentric gear (45) is meshed and connected with the follower worm (44).

2. The follow-up mechanism for the tabletop according to claim 1, characterized in that, The follow-up structure includes a rotating assembly (3). The rotating assembly (3) includes a seat cushion fixing bracket (31), a fixing bolt (33), a moving slider (32), and a housing (34). The seat cushion fixing bracket (31) is fixedly connected to the seat cushion skeleton. The fixing bolt (33) is fixedly connected to the seat cushion fixing bracket (31). The moving slider (32) is provided with a moving chute (321). The fixing bolt (33) is relatively limitedly slidable in the moving chute (321). The moving slider (32) is fixedly connected to the hypoid gear (35). The hypoid gear (35) is limitedly rotatable in the housing (34). The housing (34) is fixedly connected to the seat backrest (2).

3. The follow-up mechanism for the tabletop according to claim 2, characterized in that, The housing (34) includes a lower housing (341). The lower housing (341) is provided with a rotating groove (342). The hypoid gear (35) is limitedly rotatable in the rotating groove (342). The driving worm (43) is meshed and connected with the hypoid gear (35) in the rotating groove (342).

4. The follow-up mechanism of the tabletop according to claim 3, characterized in that, The lower housing (341) is provided with a movable groove (343). The rotating groove (342) and the movable groove (343) are communicated. The axis of the movable groove (343) intersects with the rotating groove (342). The cable assembly (4) includes a limiting block (41). The limiting block (41) is fixedly connected to the fixed end of the cable assembly (42). The outer wall of the limiting block (41) is provided with moving teeth. The inner wall of the movable groove (343) is provided with uniformly arranged fixed teeth. The moving teeth are meshed and connected with the fixed teeth.

5. A tabletop follow-up mechanism according to claim 1, characterized in that, The second support rod (52) is hollow and provided with a support groove at one end close to the small table board (1). One end of the cable assembly (42) close to the small table board (1) is arranged in the second support rod (52). The follower worm (44) is limitedly rotatable in the support groove.

6. The follow-up mechanism for a tabletop according to claim 1, characterized in that, The eccentric gear (45) is provided with a gear end and an abutting end. The abutting end abuts against the bottom of the first support rod (51). The gear end is meshed and connected with the follower worm (44).

7. The follow-up mechanism of the table board according to claim 1, characterized in that, The cable assembly (42) is provided with a universal joint (46) close to the small table board (1). The universal joint (46) is arranged at the connection of the second support rod (52) and the seat backrest (2).

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