Seat adjusting device, seat and vehicle

Abstract

The invention relates to the technical field of vehicles, in particular to a seat adjusting device, a seat and a vehicle. The invention relates to the technical field of vehicles, in particular to a seat adjusting device, a seat and a vehicle. The seat adjusting device provided by the invention comprises a backrest framework, a cushion framework, an armrest framework, a first angle adjuster, a second angle adjuster and a transmission mechanism, the first angle adjuster comprises a first gear, a first inner gear ring and a first eccentric wheel, the second angle adjuster comprises a second gear, a second inner gear ring and a second eccentric wheel, the first gear and the second gear are fixedly connected with the backrest framework, the first inner gear ring is connected with the cushion framework, and the second inner gear ring is connected with the armrest framework; the first transmission part is fixed to the first shaft, the second transmission part is fixed to the second shaft, and the transmission assembly is matched with the first transmission part and the second transmission part so that the first shaft and the second shaft can rotate in the same direction, and therefore the angle of the armrest framework relative to the cushion framework can be unchanged.

Description

Technical Field

[0001] The present disclosure relates to the technical field of vehicles, and in particular to a seat adjustment device, a seat and a vehicle. Background Art

[0002] At present, vehicle comfort is an important indicator for vehicle evaluation, and car seats play an important role in improving vehicle comfort. In order to improve the comfort of passengers, many car seats on the market are equipped with armrests. The existing armrests are generally fixed on the seat backrest. When the backrest angle is adjusted, the angle between the armrest and the backrest remains unchanged, that is, when the angle between the backrest and the seat cushion changes, the angle between the armrest and the backrest remains unchanged, so that the angle of the armrest relative to the seat cushion changes, which affects the user comfort. Summary of the invention

[0003] In order to solve the above technical problems, the present disclosure provides a seat adjustment device, a seat and a vehicle.

[0004] A first aspect of the present disclosure provides a seat adjustment device, comprising: a first recliner, a second recliner and a transmission mechanism;

[0005] The first angle adjuster includes a first gear, a first inner gear ring and a first eccentric wheel, a first through hole is formed in the center of the first gear, the first eccentric wheel is arranged in the first through hole, the first gear is eccentrically meshed with the first inner gear ring, and the first eccentric wheel is connected to the first shaft;

[0006] The second angle adjuster includes a second gear, a second inner gear ring and a second eccentric wheel, a second through hole is formed in the center of the second gear, the second eccentric wheel is arranged in the second through hole, the second gear is eccentrically meshed with the second inner gear ring, and the second eccentric wheel is connected to the second shaft;

[0007] The first gear and the second gear are both fixedly connected to the backrest frame, the first inner gear ring is fixedly connected to the seat cushion frame, and the second inner gear ring is fixedly connected to the armrest frame;

[0008] The transmission mechanism includes a first transmission member, a second transmission member and a transmission assembly. The first transmission member is fixed to the first shaft, the second transmission member is fixed to the second shaft, and the transmission assembly cooperates with the first transmission member and the second transmission member respectively to make the first shaft and the second shaft rotate in the same direction.

[0009] Further, one of the first transmission member and the second transmission member is a driving gear, and the other of the first transmission member and the second transmission member is a driven gear;

[0010] The transmission assembly includes a synchronous belt, which is annular and wound around the driving gear and the driven gear respectively, and the driving gear and the driven gear are respectively meshed with the synchronous belt;

[0011] Alternatively, the transmission assembly includes a gear assembly, the gear assembly includes an odd number of gears meshing in sequence, and the driving gear and the driven gear are respectively meshed with the gears at the head and the tail of the gear assembly.

[0012] Further, one of the first transmission member and the second transmission member is a driving sprocket, and the other of the first transmission member and the second transmission member is a driven sprocket;

[0013] The transmission assembly comprises a chain, which is annular and is wound around the driving sprocket and the driven sprocket respectively, and the driving sprocket and the driven sprocket are matched with the chain respectively.

[0014] Furthermore, the first transmission member is a driving gear;

[0015] The transmission mechanism further comprises a motor, a housing of the motor is connected to the backrest frame, and the housing is arranged in a cavity of the backrest frame;

[0016] The output shaft of the motor is connected to a worm, the worm is meshed with a worm wheel, and the worm wheel is arranged on the first shaft.

[0017] Furthermore, it also includes a first bracket and a second bracket, the first bracket and the second bracket are both fixedly connected to the backrest frame, the first bracket is provided with a first mounting hole, the second bracket is provided with a second mounting hole, the second shaft is sequentially arranged in the first mounting hole and the second mounting hole, and is rotatably matched with the first bracket and the second bracket;

[0018] The second mounting hole is provided with a bushing, the bushing is interference fit with the second mounting hole, the second shaft is passed through the bushing and has a clearance fit with the bushing, and the end of the second shaft is fixedly connected with a bolt.

[0019] Furthermore, the second transmission member is disposed on the second shaft and is located between the first bracket and the second bracket.

[0020] Furthermore, it also includes a sleeve, which is sleeved on the second shaft, and two ends of the sleeve are fixedly connected to the first bracket and the second gear respectively.

[0021] Further, the first bracket includes a first fixing plate and a first extension plate and a second extension plate connected to the first fixing plate, the first extension plate and the second extension plate both extend from the first fixing plate to one side of the first fixing plate, and the first mounting hole is provided on the first fixing plate;

[0022] The second bracket includes a second fixing plate and a third extension plate and a fourth extension plate connected to the second fixing plate, the third extension plate and the fourth extension plate extend from the second fixing plate to both sides of the second fixing plate, and the second mounting hole is provided on the second fixing plate;

[0023] The first extension plate and the fourth extension plate are both connected to the backrest frame, and the second extension plate and the third extension plate are connected via fasteners.

[0024] Furthermore, the first fixing plate and the first extension plate have a bending portion, and the bending portion is provided with reinforcing ribs.

[0025] Furthermore, the number of the first extension plates is two, and the two first extension plates are arranged up and down;

[0026] And / or, a first connecting plate is provided at one end of the first extension plate away from the second shaft axis, the first connecting plate includes a first connecting surface facing the backrest frame, and the first connecting surface is adapted to the backrest frame.

[0027] Further, the first gear and the first inner gear ring are both rigid, the first inner gear ring is arranged on the first eccentric wheel, and the first inner gear ring is meshed with the first gear in an eccentric state; the second gear and the second inner gear ring are both rigid, the second inner gear ring is arranged on the second eccentric wheel, and the second inner gear ring is meshed with the second gear in an eccentric state;

[0028] Or, the first angle adjuster is the first harmonic reducer, the first inner ring gear is the rigid wheel of the first harmonic reducer, the first gear is the flexible wheel of the first harmonic reducer, and the first gear is engaged with the first inner ring gear in an eccentric state; the second angle adjuster is the second harmonic reducer, the second inner ring gear is the rigid wheel of the second harmonic reducer, the second gear is the flexible wheel of the second harmonic reducer, and the second gear is engaged with the second inner ring gear in an eccentric state.

[0029] A second aspect of the present disclosure provides a seat, comprising the seat adjustment device described in the first aspect.

[0030] A third aspect of the present disclosure provides a vehicle, comprising the seat described in the second aspect.

[0031] Compared with the prior art, the technical solution provided by the embodiments of the present disclosure has the following advantages:

[0032] The seat adjustment device provided by the embodiment of the present disclosure comprises a first shaft connected to a first eccentric wheel, the first eccentric wheel is arranged in a first through hole of a first gear, the first gear is eccentrically meshed with a first inner gear ring, the first shaft rotates to drive the first eccentric wheel to rotate, the first eccentric wheel can abut against different parts of the inner ring of the first gear, so that the first gear is eccentrically meshed with the first inner gear ring, and the first gear is fixed to a backrest frame, and the first inner gear ring is fixed to a seat cushion frame, so that when the first shaft rotates, the backrest frame can rotate relative to the seat cushion frame;

[0033] The first transmission member is fixed to the first shaft, and the transmission assembly is connected to the first transmission member and the second transmission member. The second transmission member is fixedly connected to the second shaft. When the first shaft rotates (when the backrest frame rotates relative to the seat cushion frame), the second shaft also rotates. The second shaft is connected to the second eccentric wheel, and the second eccentric wheel is arranged in the second through hole of the second gear. The second gear is eccentrically meshed with the second inner gear ring. When the second shaft rotates, the second eccentric wheel is driven to rotate. The second eccentric wheel can abut against different parts of the inner ring of the second gear, so that the second gear is eccentrically meshed with the second inner gear ring. Because the first shaft and the second shaft are in the same direction The second gear is fixed to the backrest frame, and the second inner gear ring is fixed to the armrest frame. When the backrest frame rotates, the second gear moves synchronously with the backrest frame, and the second inner gear ring rotates. The backrest frame and the armrest frame rotate in opposite directions. For example, when the backrest frame rotates backward, the armrest frame rotates forward, and when the backrest frame rotates forward, the armrest frame rotates backward. Therefore, the armrest frame does not rotate in the same direction as the backrest frame, and the two rotate in opposite directions. The armrest frame can always maintain a constant angle with the seat cushion frame, and the user can always place his arms horizontally, thereby improving the user's riding comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0036] Figure 1 It is a schematic diagram of a partial structure of a seat according to an embodiment of the present disclosure;

[0037] Figure 2 It is an axonometric view of the seat in the embodiment of the present disclosure when the backrest frame is in a normal state;

[0038] Figure 3 A side view of the armrest of the seat according to the embodiment of the present disclosure, with the backrest frame tilted backward 30 degrees;

[0039] Figure 4 It is an axonometric view of the seat according to the embodiment of the present disclosure when the backrest frame is tilted backward by 30 degrees;

[0040] Figure 5 It is a structural schematic diagram of the seat according to the embodiment of the present disclosure;

[0041] Figure 6 A schematic structural diagram of the seat from another perspective of the embodiment of the present disclosure;

[0042] Figure 7 It is a schematic diagram of the side structure of the seat according to the embodiment of the present disclosure;

[0043] Figure 8 for Figure 7 AA section view;

[0044] Fig. 9 for Figure 8 A magnified image of

[0045] Fig.10 It is a schematic structural diagram of the first angle adjuster.

[0046] 1. Backrest frame; 2. Cushion frame; 3. Armrest frame; 41. First gear; 411. First through hole; 42. First inner gear ring; 43. First shaft; 44. First eccentric wheel; 51. Second gear; 52. Second inner gear ring; 53. Second shaft; 54. Second eccentric wheel; 61. Motor; 62. Driving gear; 63. Driven gear; 64. Synchronous belt; 7. First bracket; 71. First fixing plate; 72. First extension plate; 721. First connecting plate; 73. Second extension plate; 74. Reinforcing rib; 8. Second bracket; 81. Second fixing plate; 82. Third extension plate; 83. Fourth extension plate; 91. Sleeve; 92. Bolt; 10. Welding part. DETAILED DESCRIPTION

[0047] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0048] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0049] Combination Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 and Fig.10 As shown, the seat adjustment device provided by the embodiment of the present disclosure includes a backrest frame 1, a cushion frame 2, an armrest frame 3, a first angle adjuster, a second angle adjuster and a transmission assembly; the first angle adjuster includes a first gear 41, a first inner gear ring 42 and a first eccentric wheel 44, a first through hole 411 is formed in the center of the first gear 41, the first eccentric wheel 44 is arranged in the first through hole 411, the first gear 41 is eccentrically meshed with the first inner gear ring 42, and the first eccentric wheel 44 is connected to the first shaft 43; the first gear 41 and the first inner gear ring 42 are eccentrically meshed, the first inner gear ring 42 is fixedly connected to the cushion frame 2, the first gear 41 is fixedly connected to the backrest frame 1, and when the first shaft 43 rotates, the first eccentric wheel 44 is driven to rotate, and the first gear 41 or the first inner gear ring 42 is pushed by the first eccentric wheel 44, so that the first gear 41 is eccentrically meshed with the first inner gear ring 42, so that the cushion frame 2 rotates relative to the backrest frame 1. Through the eccentric meshing of the first gear 41 and the first inner gear ring 42 , the backrest frame 1 can be adjusted steplessly, so that the backrest frame 1 can be rotated to any position relative to the seat cushion frame 2 and locked after being adjusted into place.

[0050] The second angle adjuster includes a second gear 51, a second inner gear ring 52 and a second eccentric wheel 54. A second through hole is formed in the center of the second gear 51. The second eccentric wheel 54 is arranged in the second through hole. The second gear 51 is eccentrically meshed with the second inner gear ring 52. The second eccentric wheel 54 is connected to the second shaft 53. The second gear 51 and the second inner gear ring 52 are eccentrically meshed. The second gear 51 is fixedly connected to the backrest frame 1, and the second inner gear ring 52 is fixedly connected to the armrest frame 3. When the second shaft 53 rotates, the second eccentric wheel 54 is driven to rotate, and the second gear 51 or the second inner gear ring 52 is pushed by the second eccentric wheel 54, so that the second gear 51 and the second inner gear ring 52 are eccentrically meshed, so that the armrest frame 3 rotates relative to the backrest frame 1. Through the eccentric meshing of the second gear 51 and the second inner gear ring 52, the stepless adjustment of the armrest frame 3 can be realized, so that the armrest frame 3 can be rotated to any position relative to the backrest frame 1, and locked after being adjusted in place.

[0051] The transmission mechanism includes a first transmission member, a second transmission member and a transmission assembly. The first transmission member is arranged on the first shaft 43, the first transmission member is fixed to the first shaft 43, the second transmission member is arranged on the second shaft 53, the second transmission member is fixed to the second shaft 53, and the transmission assembly cooperates with the first transmission member and the second transmission member respectively, so that the first shaft 43 and the second shaft 53 rotate in the same direction, so that the seat cushion frame 2 and the armrest frame 3 can rotate relative to the backrest frame 1 at the same time. When the seat cushion frame 2 is fixed to the vehicle body, and when the angle between the backrest frame 1 and the seat cushion frame 2 increases or decreases, the angle between the armrest frame 3 and the backrest frame 1 also increases or decreases accordingly, so that the angle of the armrest frame 3 relative to the seat cushion frame 2 can be kept unchanged, thereby improving the riding comfort.

[0052] The first shaft 43 and the second shaft 53 rotate in the same direction, so that the seat cushion frame 2 and the armrest frame 3 can rotate relative to the backrest frame 1 at the same time. When the length direction of the armrest frame 3 is parallel to the seat cushion frame 2, when the angle between the backrest bracket and the seat cushion frame 2 increases or decreases, the length direction of the armrest frame 3 is always parallel to the seat cushion frame 2.

[0053] In other words, in the seat adjustment device provided by the embodiment of the present disclosure, the first shaft 43 is connected to the first eccentric wheel 44, the first eccentric wheel 44 is arranged in the first through hole 411 of the first gear 41, the first gear 41 is eccentrically meshed with the first inner gear ring 42, and the first shaft 43 rotates to drive the first eccentric wheel 44 to rotate, and the first eccentric wheel 44 can abut against different parts of the inner ring of the first gear 41, so that the first gear 41 is eccentrically meshed with the first inner gear ring 42, and the first gear 41 is fixed to the backrest frame 1, and the first inner gear ring 42 is fixed to the seat cushion frame 2, so that when the first shaft 43 rotates, the backrest frame 1 can rotate relative to the seat cushion frame 2;

[0054] The first transmission member is fixed to the first shaft 43, and the transmission assembly is connected to the first transmission member and the second transmission member. The second transmission member is fixedly connected to the second shaft 53. When the first shaft 43 rotates (when the backrest frame 1 rotates relative to the seat cushion frame 2), the second shaft 53 also rotates. The second shaft 53 is connected to the second eccentric wheel 54. The second eccentric wheel 54 is arranged in the second through hole of the second gear 51. The second gear is eccentrically meshed with the second inner gear ring 52. When the second shaft 53 rotates, it drives the second eccentric wheel 54 to rotate. The second eccentric wheel 54 can abut against different parts of the inner ring of the second gear 51, so that the second gear 51 is eccentrically meshed with the second inner gear ring 52. Because the first shaft 43 and The second shaft 53 rotates in the same direction, the second gear 51 is fixed to the backrest frame 1, and the second inner gear ring 52 is fixed to the armrest frame 3. When the backrest frame 1 rotates, the second gear 51 moves synchronously with the backrest frame 1, and the second inner gear ring 52 rotates. The backrest frame 1 and the armrest frame 3 rotate in opposite directions. For example, when the backrest frame 1 rotates backward, the armrest frame 3 rotates forward, and when the backrest frame 1 rotates forward, the armrest frame 3 rotates backward. Therefore, the armrest frame 3 does not rotate in the same direction as the backrest frame 1, and the two rotate in opposite directions. The armrest frame 3 can always maintain a constant angle with the seat cushion frame 2, and the user can always place his arms horizontally, thereby improving the user's riding comfort.

[0055] In other words, the present invention can transmit the angle change of the seat cushion frame 2 relative to the backrest frame 1 to the armrest frame 3 through the transmission component, so that the armrest frame 3 rotates at the same angle relative to the backrest frame 1, thereby realizing the angle adjustment of the seat armrest relative to the backrest frame 1, improving the riding comfort, and the overall structure is simple and has low requirements for seat installation.

[0056] In the disclosed embodiment, the first angle adjuster and the second angle adjuster can realize stepless adjustment of the backrest frame 1 and the armrest frame 3, so that the backrest frame 1 can be rotated to any position relative to the seat cushion frame 2, and at the same time, the armrest frame 3 can be rotated to any position relative to the backrest frame 1.

[0057] In some specific embodiments, the first inner gear ring 42 is provided with a first inner tooth, the first gear 41 is arranged inside the first inner tooth, the outer diameter of the first gear 41 is smaller than the inner diameter of the first inner gear ring 42, and the number of teeth of the first gear 41 is smaller than the number of teeth of the first inner gear ring 42, so that the first gear 41 and the first inner gear ring 42 are meshed to form an eccentric wheel. The first gear 41 is provided with a first through hole 411, and the first eccentric wheel 44 is arranged at the center of the first through hole 411, and the first eccentric wheel 44 is connected to the first shaft 43; when the first gear 41 is eccentric relative to the first inner gear ring 42, the first outer tooth meshes with the first inner tooth, so that the backrest frame 1 can be adjusted steplessly, so that the backrest frame 1 can be rotated to any position relative to the seat base, and locked after being adjusted in place.

[0058] In some specific embodiments, the second inner gear ring 52 is provided with a second inner gear, the second gear 51 is arranged inside the second inner gear, the outer diameter of the second gear 51 is smaller than the inner diameter of the second inner gear ring 52, and the number of teeth of the second gear 51 is smaller than the number of teeth of the second inner gear ring 52, so that the second gear 51 forms an eccentric wheel after meshing with the second inner gear ring 52. The second gear 51 is provided with a second through hole, and the second eccentric wheel 54 is arranged in the center of the second through hole, and the second eccentric wheel 54 is connected to the second shaft 53; when the second gear 51 is eccentric with respect to the second inner gear ring 52, the second outer teeth mesh with the second inner teeth, so that the armrest frame 3 can be adjusted steplessly, so that the backrest frame 1 can be rotated to any position relative to the armrest frame 3, and locked after being adjusted in place. The number of teeth of the second gear 51 is smaller than the number of teeth of the second inner gear ring 52, so that the second gear 51 forms an eccentric wheel after meshing with the second inner gear ring 52.

[0059] In some specific embodiments, one of the first transmission member and the second transmission member is a driving gear 62, and the other of the first transmission member and the second transmission member is a driven gear 63; the transmission assembly includes a synchronous belt 64, which is an annular belt with a steel wire rope or glass fiber as a strength layer and covered with polyurethane or chloroprene rubber. The inner circumference of the belt is made into a toothed shape so that it meshes with the toothed belt wheel. The synchronous belt 64 is annular, and the synchronous belt 64 is respectively wound around the driving gear 62 and the driven gear 63. The synchronous belt 64 is respectively wound around the driving gear 62 and the driven gear 63. The driving gear 62 and the driven gear 63 are respectively meshed with the synchronous belt 64, and the movement of the driving gear 62 can be transmitted to the driven gear 63, so that the first shaft 43 and the second shaft 53 can be synchronously rotated in the same direction, so that the seat frame 2 and the armrest frame 3 can be rotated relative to the backrest frame 1 at the same time. When the seat cushion frame 2 is fixed to the vehicle body, when the angle between the backrest frame 1 and the seat cushion frame 2 increases or decreases, the angle between the armrest frame 3 and the backrest frame 1 also increases or decreases accordingly, so that the angle of the armrest frame 3 relative to the seat cushion frame 2 remains unchanged, thereby improving riding comfort.

[0060] In some specific embodiments, one of the first transmission member and the second transmission member is a driving gear 62, and the other of the first transmission member and the second transmission member is a driven gear 63. The transmission assembly includes a gear assembly, and the gear assembly includes an odd number of gears meshing externally in sequence. The driving gear 62 and the driven gear 63 are respectively meshed with the gears at the head and tail of the gear assembly. The gear assembly may include a plurality of gears meshing in sequence, one gear in the gear assembly is meshed with the driving gear 62, and another gear in the gear assembly is meshed with the driven gear 63, so that the movement of the driving gear 62 can be transmitted to the driven gear 63. By selecting an odd number of gears meshing externally in sequence, the driving gear 62 and the driven gear 63 can be made to rotate in the same direction, so that the first shaft 43 and the second shaft 53 can be rotated synchronously in the same direction, so that the seat cushion frame 2 and the armrest frame 3 can be rotated relative to the backrest frame 1 at the same time. When the seat cushion frame 2 is fixed to the vehicle body, when the angle between the backrest frame 1 and the seat cushion frame 2 increases or decreases, the angle between the armrest frame 3 and the backrest frame 1 also increases or decreases accordingly, so that the angle of the armrest frame 3 relative to the seat cushion frame 2 remains unchanged, thereby improving riding comfort.

[0061] In some specific embodiments, one of the first transmission member and the second transmission member is a driving sprocket, and the other of the first transmission member and the second transmission member is a driven sprocket; the transmission assembly includes a chain, the chain is annular, the chain is wound around the driving sprocket and the driven sprocket respectively, the chain is wound around the driving sprocket and the driven sprocket respectively, the driving sprocket and the driven sprocket cooperate with the chain respectively, and the movement of the driving sprocket can be transmitted to the driven sprocket, so that the first shaft 43 and the second shaft 53 can rotate synchronously in the same direction, so that the seat frame 2 and the armrest frame 3 can rotate relative to the backrest frame 1 at the same time. When the seat frame 2 is fixed to the vehicle body, when the angle between the backrest frame 1 and the seat frame 2 increases or decreases, the angle between the armrest frame 3 and the backrest frame 1 also increases or decreases accordingly, so that the angle of the armrest frame 3 relative to the seat frame 2 can be kept unchanged, thereby improving the riding comfort.

[0062] In the embodiment of the present disclosure, the first angle adjuster and the second angle adjuster are linked via a transmission mechanism, which has the advantage of a compact structure on the basis of achieving transmission.

[0063] In some specific implementations, the driving gear 62 is connected to the motor 61 , and the motor 61 is used to drive the driving gear 62 to rotate.

[0064] In some specific embodiments, the first transmission member is a driving gear 62; the transmission mechanism also includes a motor 61, the housing of the motor 61 is connected to the backrest frame 1, and the housing is arranged in the cavity of the backrest frame 1, so that the structure is compact. The output shaft of the motor 61 is connected to the worm, the worm is meshed with the worm wheel, and the worm wheel is arranged on the first shaft 43. The first shaft 43 is driven to rotate by the motor 61, and the second shaft 53 can achieve synchronous rotation under the action of the first transmission member, the second transmission member and the transmission assembly. The first shaft 43 and the second shaft 53 rotate in the same direction under the action of the synchronous belt 64.

[0065] Combination Figure 6 and Figure 8 As shown, the driving gear 62 is arranged on the first shaft 43, and the driven gear 63 is arranged on the second shaft 53. The first shaft 43 is driven by the motor 61, so that the meshing position of the first gear 41 and the first inner gear ring 42 changes, thereby changing the angle between the backrest frame 1 and the cushion frame 2. The rotation of the first shaft 43 can be transmitted to the second shaft 53 through the synchronous belt 64, so that the meshing position of the second gear 51 and the second inner gear ring 52 changes, thereby changing the angle between the armrest frame 3 and the backrest frame 1. Through the cooperation of the synchronous belt 64, the driving gear 62 and the driven gear 63, the seat armrest linkage can be realized without additional power drive. Finally, when the angle of the backrest frame 1 and the cushion frame 2 changes, the angle of the armrest frame 3 and the backrest frame 1 changes in the same amount. The overall structure is simple and the requirements for seat installation are low, so that the seat armrest can be automatically adjusted to keep the angle between the armrest cushion frame 2 unchanged, thereby improving the riding comfort. In the disclosed embodiment, the driving gear 62 is driven by a motor to achieve this. Compared with manual rotation adjustment, it not only saves manpower but also facilitates adjustment, making the vehicle seat more comfortable.

[0066] Combination Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the initial position of the armrest frame 3 assembly is set to a horizontal position. When the angle of the backrest frame 1 changes, the driving gear 62 drives the driven gear 63 to rotate at the same speed and in the same direction through the synchronous belt 64. The driving gear transmits the rotation to the driven gear 63 meshing with it through the synchronous belt 64, and the transmission ratio of the two is 1:1 and the direction is the same. The driven gear 63 drives the second shaft 53 to rotate. At this time, the speed and rotation direction of the second shaft 53 are the same as those of the first shaft 43. The second shaft 53 transmits the power of the backrest rotation to the armrest frame 3, thereby driving the armrest frame 3 to rotate relative to the backrest frame 1, thereby achieving the armrest estimation and the backrest estimation to maintain the same speed and opposite rotation direction, thereby achieving the position of the armrest frame 3 automatically remaining horizontal as the backrest estimated angle is adjusted.

[0067] In some specific embodiments, the first bracket 7 and the second bracket 8 are also included, and the first bracket 7 and the second bracket 8 are fixedly connected to the backrest frame 1. The first bracket 7 is provided with a first mounting hole, and the second bracket 8 is provided with a second mounting hole. The second shaft 53 is sequentially arranged at the first mounting hole and the second mounting hole, and is rotatably matched with the first bracket 7 and the second bracket 8. The first bracket 7 and the second bracket 8 can provide a mounting portion for the second shaft 53, thereby improving the stability of the second shaft 53 and the armrest frame 3. Optionally, the first bracket 7 and the second bracket 8 are respectively connected to the backrest frame 1 at the welding portion 10 by welding, which can improve the strength and stability of the connection. Optionally, the driven gear 63 is arranged on the second shaft 53 and is located between the first bracket 7 and the second bracket 8.

[0068] In some specific embodiments, a bushing is provided in the second mounting hole, and the bushing is interference fit with the second mounting hole. The second shaft 53 is passed through the bushing and has a clearance fit with the bushing. The end of the second shaft 53 is fixedly connected with the bolt 92. The bushing can protect the second shaft 53 and reduce wear. It can also play a role in noise reduction, and can improve the stability of the second shaft 53 and the armrest frame 3.

[0069] In some specific implementations, the fixed gear or the driven gear 63 is disposed on the second shaft 53 and located between the first bracket 7 and the second bracket 8 , which can improve the stability of the fixed gear or the driven gear 63 .

[0070] In some specific embodiments, a sleeve 91 is further included, and the sleeve 91 is sleeved on the second shaft 53, and the two ends of the sleeve 91 are respectively fixedly connected to the first bracket 7 and the second gear 51. Optionally, the two ends of the sleeve 91 are respectively connected to the first bracket 7 and the second gear 51 by welding at the welding part 10. The second gear 51 can be fixed to the backrest frame 1 through the sleeve 91. When the second shaft 53 rotates, the second gear 51 is meshed with the second inner gear ring 52, so that the angle between the armrest frame 3 and the backrest frame 1 changes.

[0071] Optionally, a limit plate is provided on the second gear 51, and the limit plate is arranged at one end of the second inner gear ring 52 away from the sleeve 91. The limit plate is fixedly connected to the second gear 51 or the sleeve 91, and is used to limit the axial position of the second inner gear ring 52 on the second shaft 53 to prevent the second inner gear ring 52 from axial movement.

[0072] In some specific implementations, a gap is provided between the sleeve 91 and the second shaft 53 , so that the eccentric rotation of the second shaft 53 can be achieved.

[0073] In some specific implementations, the second shaft 53 is provided with an eccentric sleeve, which is disposed between the sleeve 91 and the second shaft 53 , and can reduce vibration and noise, thereby improving the stability of the second shaft 53 .

[0074] In some specific embodiments, the first bracket 7 includes a first fixing plate 71 and a first extension plate 72 and a second extension plate 73 connected to the first fixing plate 71, the first extension plate 72 and the second extension plate 73 both extend from the first fixing plate 71 to one side of the first fixing plate 71, and the first mounting hole is set on the first fixing plate 71; the second bracket 8 includes a second fixing plate 81 and a third extension plate 82 and a fourth extension plate 83 connected to the second fixing plate 81, the third extension plate 82 and the fourth extension plate 83 extend from the second fixing plate 81 to both sides of the second fixing plate 81, and the second mounting hole is set on the second fixing plate 81. The first mounting hole and the second mounting hole provide a mounting portion for the second shaft 53, thereby improving the stability of the second shaft 53 and the armrest frame 3. The first extension plate 72 and the fourth extension plate 83 are both connected to the backrest frame 1, and optionally, the first extension plate 72 and the backrest frame 1 are connected by welding at the welding portion 10; optionally, the fourth extension plate 83 and the backrest frame 1 are connected by welding at the welding portion 10. The second extension plate 73 and the third extension plate 82 are connected by fasteners, which is convenient for installation, especially for the installation of the second shaft 53. After the second shaft 53 and the driven gear 63 on the second shaft 53 are installed, the second extension plate 73 and the third extension plate 82 can be fixed by fasteners.

[0075] In some specific embodiments, the first fixing plate 71 and the first extension plate 72 have a bending portion, and the bending portion is provided with a reinforcing rib 74 , which can improve the stability of the first bracket 7 and thus improve the stability of the second shaft 53 .

[0076] In some specific implementations, the number of the first extension plates 72 is two, and the two first extension plates 72 are arranged up and down, which can improve the stability of the second axis 53 and the armrest frame 3.

[0077] In some specific embodiments, a first connecting plate 721 is provided at one end of the first extension plate 72 away from the second shaft 53, and the first connecting plate 721 includes a first connecting surface facing the backrest frame 1, and the first connecting surface is adapted to the backrest frame 1. Optionally, the first connecting surface is connected to the backrest frame 1 by welding at the welding portion 10, which can increase the connection area between the first connecting plate 721 and the backrest frame 1, improve the stability of the first bracket 7, and thus improve the stability of the second shaft 53 and the armrest frame 3.

[0078] In some specific embodiments, the transmission ratio of the driving gear 62 and the driven gear 63 is 1:1, so that the armrest frame 3 can automatically keep horizontal at any tilt angle of the backrest frame 1, with a large adjustment range and no manual adjustment required.

[0079] like Fig. 9As shown, the first gear 41 and the first inner gear ring 42 are both rigid, the first inner gear ring 42 is arranged on the first eccentric wheel 44, and the first inner gear ring 42 is meshed with the first gear 41 in an eccentric state; the second gear 51 and the second inner gear ring 52 are both rigid, the second inner gear ring 52 is arranged on the second eccentric wheel 54, and the second inner gear ring 52 is meshed with the second gear 51 in an eccentric state. Optionally, the first inner gear ring 42 is fixed to the first eccentric wheel 44, and when the first shaft 43 drives the first eccentric wheel 44 to rotate, since the first eccentric wheel 44 rotates in the first through hole 411 of the first gear 41, when the position of the first gear 41 is fixed, the first shaft 43 and the first inner gear ring 42 fixed to the first eccentric wheel 44 will be eccentric, so that the first gear 41 is meshed with the first inner gear ring 42. The second inner gear ring 52 is fixed to the second eccentric wheel 54. When the second shaft 53 drives the second eccentric wheel 54 to rotate, since the second eccentric wheel 54 rotates in the second through hole of the second gear 51, when the position of the second gear 51 is fixed, the second shaft 53 and the second inner gear ring 52 fixed to the second eccentric wheel 54 will be eccentric, so that the second gear 51 is meshed with the second inner gear ring 52, so that the seat cushion frame 2 and the armrest frame 3 can rotate relative to the backrest frame 1 at the same time.

[0080] In some specific embodiments, the first angle adjuster is a first harmonic reducer, the first inner gear ring 42 is a rigid wheel of the first harmonic reducer, the first gear 41 is a flexible wheel of the first harmonic reducer, and the first gear 41 is in an eccentric state with the first inner gear ring 42; the first eccentric wheel 44 can be a first harmonic generator of the first harmonic reducer, the first harmonic generator and the first gear 41 are connected in the first through hole 411 through a first flexible bearing, so that the first gear 41 is meshed with the first inner gear ring 42 in an eccentric state. The second angle adjuster is a second harmonic reducer, the second inner gear ring 52 is a rigid wheel of the second harmonic reducer, the second gear 51 is a flexible wheel of the second harmonic reducer, and the second gear 51 is meshed with the second inner gear ring 52 in an eccentric state. The second eccentric wheel 54 can be a second harmonic generator of the second harmonic reducer, the second harmonic generator and the second gear 51 are connected in the second through hole through a second flexible bearing, so that the second gear 51 is meshed with the second inner gear ring 52 in an eccentric state. The seat cushion frame 2 and the armrest frame 3 can be simultaneously rotated relative to the backrest frame 1 by means of the first harmonic reducer and the second harmonic reducer.

[0081] The seat provided in the embodiment of the present disclosure includes the seat adjustment device provided in the embodiment of the present disclosure. The vehicle provided in the embodiment of the present disclosure includes the seat provided in the embodiment of the present disclosure. Since the seat or vehicle provided in the embodiment of the present disclosure has the same advantages as the seat provided in the embodiment of the present disclosure, they will not be described in detail here.

[0082] It should be noted that, in this article, relational terms such as "first" and "second" 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 term "comprising" or any other variant thereof is 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. In the absence of further restrictions, the elements defined by the sentence "comprising a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0083] The above are only specific embodiments of the present disclosure, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to these embodiments herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A seat adjustment device, characterized in that: include: A first angle adjuster, a second angle adjuster and a transmission mechanism; The first angle adjuster includes a first gear, a first inner gear ring and a first eccentric wheel, a first through hole is formed in the center of the first gear, the first eccentric wheel is arranged in the first through hole, the first gear is eccentrically meshed with the first inner gear ring, and the first eccentric wheel is connected to the first shaft; The second angle adjuster includes a second gear, a second inner gear ring and a second eccentric wheel, a second through hole is formed at the center of the second gear, the second eccentric wheel is arranged in the second through hole, the second gear is eccentrically meshed with the second inner gear ring, and the second eccentric wheel is connected to the second shaft; The first gear and the second gear are both fixedly connected to the backrest frame, the first inner gear ring is fixedly connected to the seat cushion frame, and the second inner gear ring is fixedly connected to the armrest frame; The transmission mechanism includes a first transmission member, a second transmission member and a transmission assembly. The first transmission member is fixed to the first shaft, the second transmission member is fixed to the second shaft, and the transmission assembly cooperates with the first transmission member and the second transmission member respectively to make the first shaft and the second shaft rotate in the same direction.

2. The seat adjustment device according to claim 1, characterized in that: One of the first transmission member and the second transmission member is a driving gear, and the other of the first transmission member and the second transmission member is a driven gear; The transmission assembly includes a synchronous belt, which is annular and wound around the driving gear and the driven gear respectively, and the driving gear and the driven gear are respectively meshed with the synchronous belt; Alternatively, the transmission assembly includes a gear assembly, the gear assembly includes an odd number of gears meshing in sequence, and the driving gear and the driven gear are respectively meshed with the gears at the head and the tail of the gear assembly.

3. The seat adjustment device according to claim 1, characterized in that: One of the first transmission member and the second transmission member is a driving sprocket, and the other of the first transmission member and the second transmission member is a driven sprocket; The transmission assembly comprises a chain, which is annular and is wound around the driving sprocket and the driven sprocket respectively, and the driving sprocket and the driven sprocket are matched with the chain respectively.

4. The seat adjustment device according to claim 2, characterized in that: The first transmission member is a driving gear; The transmission mechanism further comprises a motor, a housing of the motor is connected to the backrest frame, and the housing is arranged in a cavity of the backrest frame; The output shaft of the motor is connected to a worm, the worm is meshed with a worm wheel, and the worm wheel is arranged on the first shaft.

5. The seat adjustment device according to claim 4, characterized in that: It also includes a first bracket and a second bracket, the first bracket and the second bracket are both fixedly connected to the backrest frame, the first bracket is provided with a first mounting hole, the second bracket is provided with a second mounting hole, the second shaft is sequentially arranged in the first mounting hole and the second mounting hole, and is rotatably matched with the first bracket and the second bracket; The second mounting hole is provided with a bushing, the bushing is interference fit with the second mounting hole, the second shaft is passed through the bushing and has a clearance fit with the bushing, and the end of the second shaft is fixedly connected with a bolt.

6. The seat adjustment device according to claim 5, characterized in that: The second transmission member is disposed on the second shaft and is located between the first bracket and the second bracket.

7. The seat adjustment device according to claim 5, characterized in that: It also includes a sleeve, which is sleeved on the second shaft, and two ends of the sleeve are respectively fixedly connected to the first bracket and the second gear.

8. The seat adjustment device according to claim 5, characterized in that: The first bracket includes a first fixing plate and a first extension plate and a second extension plate connected to the first fixing plate, the first extension plate and the second extension plate both extend from the first fixing plate to one side of the first fixing plate, and the first mounting hole is provided on the first fixing plate; The second bracket includes a second fixing plate and a third extension plate and a fourth extension plate connected to the second fixing plate, the third extension plate and the fourth extension plate extend from the second fixing plate to both sides of the second fixing plate, and the second mounting hole is provided on the second fixing plate; The first extension plate and the fourth extension plate are both connected to the backrest frame, and the second extension plate and the third extension plate are connected via fasteners.

9. The seat adjustment device according to claim 8, characterized in that: The first fixing plate and the first extension plate have a bending portion, and the bending portion is provided with reinforcing ribs.

10. The seat adjustment device according to claim 8, characterized in that: The number of the first extension plates is two, and the two first extension plates are arranged one above the other; And / or, a first connecting plate is provided at one end of the first extension plate away from the second shaft axis, the first connecting plate includes a first connecting surface facing the backrest frame, and the first connecting surface is adapted to the backrest frame.

11. The seat adjustment device according to any one of claims 1 to 10, characterized in that: The first gear and the first inner gear ring are both rigid, the first inner gear ring is arranged on the first eccentric wheel, and the first inner gear ring is meshed with the first gear in an eccentric state; the second gear and the second inner gear ring are both rigid, the second inner gear ring is arranged on the second eccentric wheel, and the second inner gear ring is meshed with the second gear in an eccentric state; Or, the first angle adjuster is a first harmonic reducer, the first inner gear ring is a rigid wheel of the first harmonic reducer, the first gear is a flexible wheel of the first harmonic reducer, and the first gear is eccentric to the first inner gear ring; The second angle adjuster is a second harmonic reducer, the second inner gear ring is a rigid wheel of the second harmonic reducer, the second gear is a flexible wheel of the second harmonic reducer, and the second gear is meshed with the second inner gear ring in an eccentric state.

12. A seat, characterized in that: The seat adjustment device comprises the seat adjustment device according to any one of claims 1 to 11.

13. A vehicle, characterized in that: Including the seat described in claim 12.

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