Seat adjustment device, seat and vehicle

Abstract

The present disclosure relates to the technical field of vehicles, and particularly relates to a seat adjusting device, a seat and a vehicle. The present disclosure relates to the technical field of vehicles, and particularly relates to a seat adjusting device, a seat and a vehicle. The seat adjusting device provided by the present disclosure 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. A first transmission member is fixed to a first shaft, a second transmission member is fixed to a second shaft, and a transmission assembly is matched with the first transmission member and the second transmission member respectively, so that the first shaft and the second shaft rotate in the same direction, thereby the angle of the armrest framework relative to the cushion framework can be kept unchanged.

Description

TECHNICAL FIELD

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

[0002] Currently, vehicle comfort is an important indicator for vehicle evaluation, and the automobile seat plays an important role in improving the comfort of the automobile. In order to improve the comfort of passengers, many seat models 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 cushion changes, the angle between the armrest and the backrest does not change, so that the angle of the armrest relative to the cushion changes, which affects the comfort of the user. SUMMARY

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

[0004] The first aspect of the present disclosure provides a seat adjusting device, comprising: a first angle adjuster, a second angle adjuster and a transmission mechanism;

[0005] The first angle adjuster comprises a first gear, a first inner ring gear 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 engaged with the first inner ring gear, and the first eccentric wheel is connected with a first shaft;

[0006] The second angle adjuster comprises a second gear, a second inner ring gear 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 engaged with the second inner ring gear, and the second eccentric wheel is connected with a second shaft;

[0007] The first gear and the second gear are fixedly connected with a backrest framework, the first inner ring gear is fixedly connected with a cushion framework, and the second inner ring gear is fixedly connected with an armrest framework;

[0008] The transmission mechanism comprises 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, so that 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 comprises a synchronous belt, the synchronous belt is annular, the synchronous belt is arranged around the driving gear and the driven gear respectively, and the driving gear and the driven gear are engaged with the synchronous belt respectively.

[0011] Alternatively, the transmission assembly comprises a gear assembly, the gear assembly comprises an odd number of gears which are engaged with each other in sequence, and the driving gear and the driven gear are engaged with the gears at the head and tail of the gear assembly respectively.

[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, the chain is annular, the chain is arranged around the driving sprocket and the driven sprocket respectively, and the driving sprocket and the driven sprocket are matched with the chain.

[0014] Further, the first transmission member is a driving gear.

[0015] The transmission mechanism further comprises a motor, a shell of the motor is connected with the backrest framework, and the shell is arranged in a cavity of the backrest framework.

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

[0017] Further, first and second supports are further included, the first and second supports are fixedly connected with the backrest framework, the first support is provided with a first mounting hole, the second support is provided with a second mounting hole, the second shaft is arranged in the first mounting hole and the second mounting hole in sequence and rotationally matched with the first support and the second support.

[0018] The second mounting hole is provided with a bushing, the bushing is interference-fitted with the second mounting hole, the second shaft is arranged in the bushing and clearance-fitted with the bushing, and an end portion of the second shaft is fixedly connected with a bolt.

[0019] Further, the second transmission member is arranged on the second shaft and located between the first support and the second support.

[0020] Further, a sleeve is further included, the sleeve is sleeved on the second shaft, and two ends of the sleeve are fixedly connected with the first support and the second gear respectively.

[0021] Further, the first support includes a first fixed plate, and a first extension plate and a second extension plate connected to the first fixed plate, the first extension plate and the second extension plate extending from the first fixed plate to one side of the first fixed plate, and the first mounting hole is arranged on the first fixed plate.

[0022] The second support includes a second fixed plate, and a third extension plate and a fourth extension plate connected to the second fixed plate, the third extension plate and the fourth extension plate extending from the second fixed plate to both sides of the second fixed plate, and the second mounting hole is arranged on the second fixed plate.

[0023] The first extension plate and the fourth extension plate are connected to the backrest framework, and the second extension plate and the third extension plate are connected by a fastener.

[0024] Further, the first fixed plate and the first extension plate have a bending part provided with a reinforcing rib.

[0025] Further, the number of the first extension plates is two, and the two first extension plates are arranged in an up-down manner.

[0026] Further, one end of the first extension plate away from the second shaft axis is provided with a first connecting plate, and the first connecting plate includes a first connecting surface facing the backrest framework, and the first connecting surface is matched with the backrest framework.

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

[0028] Alternatively, 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 engaged with the first inner gear ring in an eccentric state; 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 engaged with the second inner gear ring in an eccentric state.

[0029] The second aspect of the present disclosure provides a seat including the seat adjusting device of the first aspect.

[0030] The third aspect of the present disclosure provides a vehicle including the seat of the second aspect.

[0031] The technical scheme provided by the embodiments of the present disclosure has the following advantages compared with the prior art.

[0032] The seat adjusting device provided by the embodiments of the present disclosure is characterized in that the first shaft is connected with the first eccentric wheel, the first eccentric wheel is arranged in the first through hole of the first gear, the first gear is eccentrically engaged with the first inner ring gear, the first shaft drives the first eccentric wheel to rotate when the first shaft rotates, the first eccentric wheel can abut against different parts of the inner ring of the first gear, so that the first gear is eccentrically engaged with the first inner ring gear, the first gear is fixed to the backrest framework, and the first inner ring gear is fixed to the cushion framework, so that the backrest framework can rotate relative to the cushion framework when the first shaft rotates.

[0033] The first transmission member is fixed to the first shaft, the transmission assembly is in transmission connection with the first transmission member and the second transmission member, the second transmission member is fixedly connected with the second shaft, the second shaft rotates when the first shaft rotates (the backrest framework rotates relative to the cushion framework), the second shaft is connected with the second eccentric wheel, the second eccentric wheel is arranged in the second through hole of the second gear, the second gear is eccentrically engaged with the second inner ring gear, the second shaft drives the second eccentric wheel to rotate when the second shaft rotates, the second eccentric wheel can abut against different parts of the inner ring of the second gear, so that the second gear is eccentrically engaged with the second inner ring gear, the first shaft and the second shaft rotate in the same direction, the second gear is fixed to the backrest framework, and the second inner ring gear is fixed to the armrest framework, so that the second gear moves synchronously relative to the backrest framework when the backrest framework rotates, the second inner ring gear rotates, and the backrest framework and the armrest framework rotate in opposite directions, for example, the armrest framework rotates forward when the backrest framework rotates backward, and the armrest framework rotates backward when the backrest framework rotates forward, so that the armrest framework does not rotate in the same direction as the backrest framework, the armrest framework can always maintain the same angle with the cushion framework, and the user can always place the arms horizontally, thereby improving the comfort of the user. BRIEF DESCRIPTION OF DRAWINGS

[0034] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the present disclosure and, together with the specification, serve to explain the principles of the present disclosure.

[0035] In order to more clearly illustrate the technical scheme in the embodiments of the present disclosure or the prior art, the accompanying drawings required to be used in the embodiments or the prior art description will be briefly introduced as follows. Obviously, other drawings can also be obtained by those skilled in the art without any creative labor under the premise of these drawings.

[0036] Figure 1 A partial structure schematic view of the seat described in the embodiments of the present disclosure;

[0037] Figure 2 An axonometric view of the seat described in the embodiments of the present disclosure in a normal state of the backrest framework.

[0038] Figure 3 Side view of the seat according to the embodiment of the present disclosure in the state that the backrest framework is inclined backward by 30 degrees;

[0039] Figure 4 Axonometric view of the seat according to the embodiment of the present disclosure in the state that the backrest framework is inclined backward by 30 degrees;

[0040] Figure 5 Structure schematic view of the seat according to the embodiment of the present disclosure;

[0041] Figure 6 Structure schematic view of the seat according to the embodiment of the present disclosure from another perspective;

[0042] Figure 7 Side view structure schematic view of the seat according to the embodiment of the present disclosure;

[0043] Figure 8 A-A sectional view of Figure 7

[0044] Figure 9 Enlarged view of Figure 8

[0045] Figure 10 Structure schematic view of the first angle adjuster.

[0046] Fig. 1, backrest framework; 2, cushion framework; 3, armrest framework; 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 support; 71, first fixed plate; 72, first extension plate; 721, first connecting plate; 73, second extension plate; 74, reinforcing rib; 8, second support; 81, second fixed plate; 82, third extension plate; 83, fourth extension plate; 91, sleeve; 92, bolt; 10, welding portion. DETAILED DESCRIPTION

[0047] In order to enable persons skilled in the art to more clearly understand the above-mentioned purposes, features and advantages of the present disclosure, the solutions 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 in order to provide a thorough understanding of the present disclosure, but the present disclosure can also be implemented in other ways different from those described herein; obviously, the embodiments in the description are only some of the embodiments of the present disclosure, not all the embodiments. ​​

[0049] In combination Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown in the accompanying drawings, the seat adjusting device provided by the embodiments of the present disclosure comprises a backrest framework 1, a cushion framework 2, an armrest framework 3, a first angle adjuster, a second angle adjuster and a transmission assembly. The first angle adjuster comprises a first gear wheel 41, a first inner ring gear 42 and a first eccentric wheel 44. The first gear wheel 41 has a first through hole 411 formed in the center thereof, and the first eccentric wheel 44 is arranged in the first through hole 411. The first gear wheel 41 is eccentrically engaged with the first inner ring gear 42, and the first eccentric wheel 44 is connected with a first shaft 43. The first gear wheel 41 is eccentrically engaged with the first inner ring gear 42. The first inner ring gear 42 is fixedly connected with the cushion framework 2, and the first gear wheel 41 is fixedly connected with the backrest framework 1. When the first shaft 43 rotates, the first eccentric wheel 44 is driven to rotate. The first gear wheel 41 or the first inner ring gear 42 is pushed by the first eccentric wheel 44, so that the first gear wheel 41 is eccentrically engaged with the first inner ring gear 42, thereby causing the cushion framework 2 to rotate relative to the backrest framework 1. Through the eccentric engagement of the first gear wheel 41 and the first inner ring gear 42, stepless adjustment of the backrest framework 1 can be realized, so that the backrest framework 1 can be rotated to any position relative to the cushion framework 2, and locking can be realized after adjustment.

[0050] The second angle adjuster comprises a second gear wheel 51, a second inner ring gear 52 and a second eccentric wheel 54. The second gear wheel 51 has a second through hole formed in the center thereof, and the second eccentric wheel 54 is arranged in the second through hole. The second gear wheel 51 is eccentrically engaged with the second inner ring gear 52, and the second eccentric wheel 54 is connected with a second shaft 53. The second gear wheel 51 is eccentrically engaged with the second inner ring gear 52. The second gear wheel 51 is fixedly connected with the backrest framework 1, and the second inner ring gear 52 is fixedly connected with the armrest framework 3. When the second shaft 53 rotates, the second eccentric wheel 54 is driven to rotate. The second gear wheel 51 or the second inner ring gear 52 is pushed by the second eccentric wheel 54, so that the second gear wheel 51 is eccentrically engaged with the second inner ring gear 52, thereby causing the armrest framework 3 to rotate relative to the backrest framework 1. Through the eccentric engagement of the second gear wheel 51 and the second inner ring gear 52, stepless adjustment of the armrest framework 3 can be realized, so that the armrest framework 3 can be rotated to any position relative to the backrest framework 1, and locking can be realized after adjustment.

[0051] The transmission mechanism comprises a first transmission member, a second transmission member and a transmission assembly. The first transmission member is arranged on the first shaft 43 and is fixed to the first shaft 43. The second transmission member is arranged on the second shaft 53 and is fixed to the second shaft 53. 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, thereby enabling the seat cushion framework 2 and the armrest framework 3 to rotate simultaneously relative to the backrest framework 1. When the seat cushion framework 2 is fixed to the vehicle body, and when the included angle between the backrest framework 1 and the seat cushion framework 2 increases or decreases, the included angle between the armrest framework 3 and the backrest framework 1 also increases or decreases accordingly, thereby achieving the angle of the armrest framework 3 relative to the seat cushion framework 2 unchanged, and improving the riding comfort.

[0052] The first shaft 43 and the second shaft 53 rotate in the same direction, thereby enabling the seat cushion framework 2 and the armrest framework 3 to rotate simultaneously relative to the backrest framework 1. When the length direction of the armrest framework 3 is parallel to the seat cushion framework 2, when the included angle between the backrest framework and the seat cushion framework 2 increases or decreases, the length direction of the armrest framework 3 is always parallel to the seat cushion framework 2.

[0053] In other words, the seat adjusting device provided by the embodiment of the present disclosure is characterized in that the first shaft 43 is connected with 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 engaged with the first inner ring gear 42, the first shaft 43 drives the first eccentric wheel 44 to rotate when rotating, 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 engaged with the first inner ring gear 42, and the first gear 41 is fixed to the backrest framework 1, the first inner ring gear 42 is fixed to the seat cushion framework 2, so that the backrest framework 1 can rotate relative to the seat cushion framework 2 when the first shaft 43 rotates;

[0054] The first transmission member is fixed to the first shaft 43, the transmission assembly is in transmission connection with the first transmission member and the second transmission member, the second transmission member is fixedly connected with the second shaft 53, and the second shaft 53 rotates when the first shaft 43 rotates (when the backrest framework 1 rotates relative to the seat cushion framework 2). The second shaft 53 is connected with 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 engaged with the second inner gear ring 52, the second shaft 53 drives the second eccentric wheel 54 to rotate when the second shaft 53 rotates, 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 engaged with the second inner gear ring 52, and the first shaft 43 and the second shaft 53 rotate in the same direction, the second gear 51 is fixed to the backrest framework 1, the second inner gear ring 52 is fixed to the armrest framework 3, the second gear 51 moves synchronously relative to the backrest framework 1 when the backrest framework 1 rotates, the second inner gear ring 52 rotates, and the backrest framework 1 and the armrest framework 3 rotate in opposite directions, for example, when the backrest framework 1 rotates backward, the armrest framework 3 rotates forward, when the backrest framework 1 rotates forward, the armrest framework 3 rotates backward, so that the armrest framework 3 does not rotate in the same direction with the backrest framework 1, and the two frameworks rotate in opposite directions, the armrest framework 3 can always keep the angle unchanged relative to the seat cushion framework 2, the user can always place the arms horizontally, and the comfort of the user is improved.

[0055] In other words, the disclosure can change the angle of the seat cushion framework 2 relative to the backrest framework 1 through the transmission assembly and transmit the change to the armrest framework 3, so that the armrest framework 3 rotates by the same angle relative to the backrest framework 1, thereby achieving the angle adjustment of the seat armrest relative to the backrest framework 1, improving the comfort of the user, and the overall structure is simple and the installation requirement of the seat is low.

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

[0057] In some specific embodiments, the first inner gear ring 42 is internally provided with a first inner gear, the first gear 41 is arranged inside the first inner gear, 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 engaged to form an eccentric wheel. The first gear 41 is provided with a first through hole 411, the first eccentric wheel 44 is arranged in the center of the first through hole 411, and the first eccentric wheel 44 is connected with the first shaft 43; when the first gear 41 is eccentric relative to the first inner gear ring 42, the first outer gear is engaged with the first inner gear, the stepless adjustment of the backrest framework 1 can be realized, so that the backrest framework 1 can rotate to any position relative to the seat base, and locking can be realized after adjustment.

[0058] In some specific embodiments, the second inner ring 52 is internally provided with a second inner tooth, the second gear 51 is arranged inside the second inner tooth, the outer diameter of the second gear 51 is smaller than the inner diameter of the second inner ring 52, and the number of teeth of the second gear 51 is smaller than the number of teeth of the second inner ring 52, so that the second gear 51 and the second inner ring 52 form an eccentric wheel after meshing. The second gear 51 is provided with a second through hole, the second eccentric wheel 54 is arranged at the center of the second through hole, and the second eccentric wheel 54 is connected with the second shaft 53; when the second gear 51 is eccentric relative to the second inner ring 52, the second outer tooth and the second inner tooth mesh, which can realize stepless adjustment of the armrest framework 3, so that the backrest framework 1 can be rotated to any position relative to the armrest framework 3, and locked after adjustment. The number of teeth of the second gear 51 is smaller than the number of teeth of the second inner ring 52, so that the second gear 51 and the second inner ring 52 form an eccentric wheel after meshing.

[0059] In some specific embodiments, one of the first transmission member and the second transmission member is a driving gear 62, and the other 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 strong layer, coated with polyurethane or chloroprene rubber, and the inner periphery of the belt is toothed to mesh with the toothed belt pulley. The synchronous belt 64 is annular, and the synchronous belt 64 is wound around the driving gear 62 and the driven gear 63 respectively. The driving gear 62 and the driven gear 63 are respectively meshed with the synchronous belt 64, so that the movement of the driving gear 62 can be transmitted to the driven gear 63, thereby realizing synchronous and same direction rotation of the first shaft 43 and the second shaft 53, so that the seat cushion framework 2 and the armrest framework 3 can be simultaneously rotated relative to the backrest framework 1. When the seat cushion framework 2 is fixed to the vehicle body, the angle between the backrest framework 1 and the seat cushion framework 2 increases or decreases, and the angle between the armrest framework 3 and the backrest framework 1 also increases or decreases accordingly, so that the angle of the armrest framework 3 relative to the seat cushion framework 2 remains unchanged, thereby improving the riding comfort.

[0060] In some specific embodiments, one of the first transmission member and the second transmission member is a driving gear 62, the other of the first transmission member and the second transmission member is a driven gear 63, the transmission assembly comprises a gear assembly, the gear assembly comprises an odd number of gears which are sequentially and externally meshed, the driving gear 62 and the driven gear 63 are respectively meshed with gears at the head and tail of the gear assembly, the gear assembly can comprise a plurality of gears which are sequentially meshed, one of the gears in the gear assembly is meshed with the driving gear 62, and the other of the gears 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 which are sequentially and externally meshed, the driving gear 62 and the driven gear 63 can be turned in the same direction, so that the first shaft 43 and the second shaft 53 can be synchronously and unidirectionally rotated, so that the seat cushion framework 2 and the armrest framework 3 can be simultaneously rotated relative to the backrest framework 1. When the seat cushion framework 2 is fixed to the vehicle body, the angle between the backrest framework 1 and the seat cushion framework 2 is increased or decreased, and the angle between the armrest framework 3 and the backrest framework 1 is also correspondingly increased or decreased, so that the angle between the armrest framework 3 and the seat cushion framework 2 is not changed, and the riding comfort is improved.

[0061] In some specific embodiments, one of the first transmission member and the second transmission member is a driving sprocket, the other of the first transmission member and the second transmission member is a driven sprocket; the transmission assembly comprises a chain, the chain is annular, and the chain is respectively wound around the driving sprocket and the driven sprocket, the driving sprocket and the driven sprocket are respectively matched with the chain, so that 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 be synchronously and unidirectionally rotated, so that the seat cushion framework 2 and the armrest framework 3 can be simultaneously rotated relative to the backrest framework 1. When the seat cushion framework 2 is fixed to the vehicle body, the angle between the backrest framework 1 and the seat cushion framework 2 is increased or decreased, and the angle between the armrest framework 3 and the backrest framework 1 is also correspondingly increased or decreased, so that the angle between the armrest framework 3 and the seat cushion framework 2 is not changed, and the riding comfort is improved.

[0062] In the embodiments of the present disclosure, the first angle adjuster and the second angle adjuster are linked through the transmission mechanism, and have the advantage of compact structure on the basis of realizing transmission.

[0063] In some specific embodiments, the driving gear 62 is connected with 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 further comprises a motor 61, the housing of the motor 61 is connected with the backrest framework 1, and the housing is arranged in the cavity of the backrest framework 1, so that the structure is compact. The output shaft of the motor 61 is connected with a worm, the worm is engaged with a 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 be synchronously rotated 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] As shown in Figure 6 and Figure 8 , the driving gear 62 is arranged on the first shaft 43, the driven gear 63 is arranged on the second shaft 53, the first shaft 43 is driven by the motor 61, the meshing position of the first gear 41 and the first inner ring gear 42 is changed, so that the angle between the backrest framework 1 and the seat cushion framework 2 is changed, the rotation of the first shaft 43 is transmitted to the second shaft 53 through the synchronous belt 64, the meshing position of the second gear 51 and the second inner ring gear 52 is changed, so that the angle between the armrest framework 3 and the backrest framework 1 is changed, and the armrest framework 3 is automatically adjusted without additional power drive through the cooperation of the synchronous belt 64, the driving gear 62 and the driven gear 63. Finally, when the angle between the backrest framework 1 and the seat cushion framework 2 changes, the angle between the armrest framework 3 and the backrest framework 1 changes by the same amount, the overall structure is simple, the installation requirement of the seat is low, the seat armrest can be automatically adjusted, the angle between the armrest cushion framework 2 and the seat armrest remains unchanged, and the riding comfort is improved. In the embodiment of the disclosure, the driving gear 62 is driven by the motor, compared with manual rotation adjustment, not only the manpower can be saved, but also the adjustment is convenient, so that the vehicle seat has good comfort.

[0066] As shown in Figure 1 , Figure 2 , Figure 3 and Figure 4 , the initial position of the armrest framework 3 assembly is set as a horizontal position. When the angle of the backrest framework 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 engaged therewith through the synchronous belt 64, 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 second shaft 53 and the first shaft 43 have the same rotation speed and rotation direction. The second shaft 53 transmits the power of backrest rotation to the armrest framework 3, so as to drive the armrest framework 3 to rotate relative to the backrest framework 1, thereby realizing that the armrest framework 3 and the backrest framework 1 have the same rotation speed and opposite rotation direction, and further realizing that the position of the armrest framework 3 always automatically remains horizontal with the angle adjustment of the backrest framework 1.

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

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

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

[0070] In some specific embodiments, the sleeve 91 is further included, the sleeve 91 is sleeved on the second shaft 53, and the two ends of the sleeve 91 are respectively fixedly connected with the first support 7 and the second gear 51. Optionally, the two ends of the sleeve 91 are respectively connected with the first support 7 and the second gear 51 at the welding portion 10 through welding. The sleeve 91 can fix the second gear 51 on the backrest framework 1. When the second shaft 53 rotates, the second gear 51 is engaged with the second inner ring gear 52, so that the angle between the armrest framework 3 and the backrest framework 1 changes.

[0071] Optionally, the second gear 51 is provided with a limiting plate, and the limiting plate is arranged at one end of the second inner ring gear 52 away from the sleeve 91. The limiting plate is fixedly connected with the second gear 51 or the sleeve 91, and is used for limiting the position of the second inner ring gear 52 in the axial direction of the second shaft 53, thereby preventing the second inner ring gear 52 from moving in the axial direction.

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

[0073] In some specific embodiments, the second shaft 53 is provided with an eccentric shaft sleeve, and the eccentric shaft sleeve is arranged between the sleeve 91 and the second shaft 53. The eccentric shaft sleeve can play a role in shock absorption and noise reduction, thereby improving the stability of the second shaft 53.

[0074] In some specific embodiments, the first support 7 comprises a first fixed plate 71 and a first extension plate 72 and a second extension plate 73 connected with the first fixed plate 71, the first extension plate 72 and the second extension plate 73 extend from the first fixed plate 71 to one side of the first fixed plate 71, and the first mounting hole is arranged on the first fixed plate 71; the second support 8 comprises a second fixed plate 81 and a third extension plate 82 and a fourth extension plate 83 connected with the second fixed plate 81, the third extension plate 82 and the fourth extension plate 83 extend from the second fixed plate 81 to both sides of the second fixed plate 81, and the second mounting hole is arranged on the second fixed plate 81. The first mounting hole and the second mounting hole provide a mounting part of the second shaft 53, improving the stability of the second shaft 53 and the armrest framework 3. The first extension plate 72 and the fourth extension plate 83 are both connected with the backrest framework 1, and optionally, the first extension plate 72 and the backrest framework 1 are connected by welding at the welding part 10; optionally, the fourth extension plate 83 and the backrest framework 1 are connected by welding at the welding part 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 thereon 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 fixed plate 71 and the first extension plate 72 have a bending part, and the bending part is provided with a reinforcing rib 74, which can improve the stability of the first support 7, thereby improving the stability of the second shaft 53.

[0076] In some specific embodiments, the number of the first extension plates 72 is two, and the two first extension plates 72 are arranged above and below, which can improve the stability of the second shaft 53 and the armrest framework 3.

[0077] In some specific embodiments, the first extension plate 72 is provided with a first connecting plate 721 at an end away from the second shaft 53, and the first connecting plate 721 comprises a first connecting surface facing the backrest framework 1, and the first connecting surface is adapted to the backrest framework 1. Optionally, the first connecting surface and the backrest framework 1 are connected by welding at the welding part 10, which can increase the connecting area of the first connecting plate 721 and the backrest framework 1, improve the stability of the first support 7, and thereby improve the stability of the second shaft 53 and the armrest framework 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 framework 3 can automatically remain horizontal at any inclination angle of the backrest framework 1, the adjustment range is large, and manual adjustment is not required.

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

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

[0081] The seat provided by the embodiments of the present disclosure comprises the seat adjusting device provided by the embodiments of the present disclosure. The vehicle provided by the embodiments of the present disclosure comprises the seat provided by the embodiments of the present disclosure. Since the seat or the vehicle provided by the embodiments of the present disclosure has the same advantages as the seat provided by the embodiments of the present disclosure, the advantages will not be described here.

[0082] It has to be noted that, in the present document, relational terms are intended only to convey a relative sense of order such that, where, for example, a first entity is said to be to a second entity "close", it is contemplated that a third entity affording an even closer relationship to the second entity would also be regarded as "close", and so forth. Furthermore, you will see that the terms "comprises", "comprising", or other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements is not thereby required to comprise only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Also, use of the "inclusive OR" (e.g., "A or B") is intended to represent an "inclusive OR", where the or statement is true if either A or B is true.

[0083] The foregoing is merely illustrative of the principles of this disclosure and various modifications can be made by those skilled in the art without departing from the spirit and scope of the disclosure. The disclosure is not intended to be limited to the embodiments described herein but is to be accorded the full scope of the claims, wherein reference to an element in the singular is not intended to mean "one and only one" unless specifically so stated, but instead means that there is at least one and there can be more than one.

Claims

1. A seat adjustment device, characterized by, The utility model relates to a reclining mechanism of a sofa, which comprises 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 central part of the first gear is provided with a first through hole, the first eccentric wheel is arranged in the first through hole, the first gear is eccentrically engaged with the first inner gear ring, and the first eccentric wheel is connected with a first shaft. The second angle adjuster comprises a second gear, a second inner gear ring and a second eccentric wheel, the central part of the second gear is provided with a second through hole, the second eccentric wheel is arranged in the second through hole, the second gear is eccentrically engaged with the second inner gear ring, and the second eccentric wheel is connected with a second shaft. The first gear and the second gear are fixedly connected with a backrest framework, the first inner gear ring is fixedly connected with a cushion framework, and the second inner gear ring is fixedly connected with an armrest framework. The transmission mechanism comprises 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 is matched with the first transmission member and the second transmission member respectively to enable the first shaft and the second shaft to rotate in the same direction. One of the first transmission member and the second transmission member is a driving gear, and the other is a driven gear.

2. The seat adjustment device of claim 1, wherein The transmission assembly comprises a synchronous belt, the synchronous belt is annular, and the synchronous belt is arranged around the driving gear and the driven gear respectively. Alternatively, the transmission assembly comprises a gear assembly, the gear assembly comprises an odd number of gears which are successively externally engaged, and the driving gear and the driven gear are engaged with gears at the head and tail of the gear assembly respectively. One of the first transmission member and the second transmission member is a driving sprocket, and the other is a driven sprocket.

3. The seat adjustment device of claim 1, wherein The transmission assembly comprises a chain, the chain is annular, and the chain is arranged around the driving sprocket and the driven sprocket respectively. The first transmission member is a driving gear.

4. The seat adjustment device of claim 2, wherein The transmission mechanism further comprises a motor, a shell of the motor is connected with the backrest framework, and the shell is arranged in a cavity of the backrest framework. An output shaft of the motor is connected with a worm, the worm is engaged with a worm wheel, and the worm wheel is arranged on the first shaft. The utility model further comprises a first support and a second support, the first support and the second support are fixedly connected with the backrest framework, the first support is provided with a first mounting hole, the second support is provided with a second mounting hole, the second shaft is arranged in the first mounting hole and the second mounting hole successively and rotationally cooperates with the first support and the second support.

5. The seat adjustment device of claim 4, wherein The second mounting hole is provided with a bushing, the bushing is in interference fit with the second mounting hole, the second shaft is arranged in the bushing and is in clearance fit with the bushing, and the end of the second shaft is fixedly connected with a bolt. The second transmission member is arranged on the second shaft and located between the first support and the second support.

6. The seat adjustment device of claim 5, wherein ​ 7. The seat adjustment device of claim 5, wherein Further comprising a sleeve, the sleeve is sleeved on the second shaft, two ends of the sleeve are fixedly connected with the first support and the second gear respectively.

8. The seat adjustment device of claim 5, wherein, The first support comprises a first fixed plate, and a first extension plate and a second extension plate connected with the first fixed plate, the first extension plate and the second extension plate extend from the first fixed plate to one side of the first fixed plate, and the first mounting hole is arranged on the first fixed plate; The second support comprises a second fixed plate, and a third extension plate and a fourth extension plate connected with the second fixed plate, the third extension plate and the fourth extension plate extend from the second fixed plate to two sides of the second fixed plate, and the second mounting hole is arranged on the second fixed plate; The first extension plate and the fourth extension plate are connected with the backrest framework, and the second extension plate and the third extension plate are connected by fasteners.

9. The seat adjustment device of claim 8, wherein, The first fixed plate and the first extension plate have a bending part provided with a reinforcing rib.

10. The seat adjustment device of claim 8, wherein, The number of the first extension plates is two, and the two first extension plates are arranged above and below; And / or, one end of the first extension plate away from the second shaft axis is provided with a first connecting plate, the first connecting plate comprises a first connecting surface facing the backrest framework, and the first connecting surface is matched with the backrest framework.

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

12. A seat, characterized by The seat adjusting device of any one of claims 1 to 11.

13. A vehicle characterized by comprising: The seat of claim 12.

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