CN221213617U - Backrest armrest linkage mechanism of vehicle seat - Google Patents

Abstract

A backrest armrest linkage mechanism of a vehicle seat comprises a backrest side skeleton; the angle adjuster unit comprises an angle adjuster body and an angle adjuster driving shaft, wherein the angle adjuster body is arranged at the bottom position of the backrest side plate framework, and the angle adjuster driving shaft is in transmission connection with the angle adjuster body; the armrest framework is arranged at one side position of the middle part of the backrest side framework; further comprises: the reversing unit is arranged in the backrest side framework and used for enabling the backrest side framework and the armrest framework to move in opposite directions; the linkage transmission unit is arranged between the driving shaft of the angle adjuster and the reversing unit and is used for realizing linkage of the driving shaft of the angle adjuster and the reversing unit; the transmission locking unit is arranged between the backrest side part framework and the armrest framework, and can drive the armrest framework to rotate and realize the locking of the armrest framework. The advantages are that: the backrest and the armrests are linked in opposite directions, so that the backrest and the armrests are comfortable to use and good in safety; can realize quick, simple and convenient transformation on the basis of current seat electric angle adjuster, compact structure, the part is few, low in production cost.

Description

Backrest armrest linkage mechanism of vehicle seat

Technical Field

The utility model belongs to the technical field of automobile seat accessories, and particularly relates to a backrest armrest linkage mechanism of a vehicle seat.

Background

With the rapid development of the automobile industry, people have increasingly high requirements on the comfort level of seats in vehicles. With the increasing demands on seat function and comfort, higher demands are also being placed on seat function and comfort. The armrests are also important factors for improving the comfort of the seat, particularly under the condition of long journey, the passengers can place the arms or elbows on the armrests, and the comfort of the hands, the shoulders, the neck and the back is improved while the passengers are convenient to sit. The passenger can adjust the position of handrail according to actual demand, and the passenger also can be through upwards overturn the handrail to increase the space of seat side and make things convenient for the passenger to get in and out. The seat armrests are generally arranged on the seat back frame, one ends of the armrests are connected to the middle part of the side face of the back frame, the other ends of the armrests can rotate around the rotating shafts at the connecting positions, and the rotating shafts adopt damping rotating shafts, so that the armrests can be rotated upwards to stop at one side of the seat back or can be rotated to the back to prevent the armrests from rotating, the conventional vehicle seat armrests are convenient to adjust, and soft and comfortable supports can be promoted for hands of passengers.

However, with the continuous improvement of the living standard of people and the continuous development of the new energy vehicle industry, the development of the intellectualization and multifunctionalization of vehicles and internal seats has become more and more important in the development of the current main engine factories, so as to improve the comfort, to meet the requirement of passengers for achieving the most comfortable posture during riding, seats and zero gravity seats capable of performing large-angle adjustment are more and more favored by manufacturers and passengers, and then the use requirement of the seats capable of performing large-angle adjustment cannot be met by the conventional armrest structure adjustment, and certain limitation is caused on the comfort of use. Specifically, when a passenger sits in a seat in a sitting posture, the upper trunk of the passenger is in a vertical state, and the armrest mechanism is arranged in a substantially horizontal direction; and when such a seat capable of large angle adjustment is subjected to a posture adjustment change, such as when the seat is reclined. The human body trunk gesture of driver and passenger can take place corresponding change along with the rotation of seat, back and arm position nature also can change, then current seat armrest mechanism gesture change limited and its can not take place corresponding change along with seat back rotation yet, armrest mechanism still is in the health state that only is fit for the truck and is in vertical position after the seat changes, let the space at human arm position be extruded, also make driver and passenger's gesture very special turn round simultaneously for driver and passenger's riding comfort level is discounted greatly, can lead to the passenger to fall down even, causes unnecessary incident. Many attempts are made by existing host factories and automobile spare and accessory parts manufacturers to solve the problem, so as to realize the follow-up of the armrests and the seat backs, but the problem that the structure of the follow-up armrests of the existing vehicle seats is complicated and the number of integral parts is large generally exists, and meanwhile, the synchronicity of the movements of the armrests and the seat backs cannot be effectively ensured.

In view of the above, it is necessary to design a device that enables the armrests to be interlocked with each other when the seat back is changed in posture. To this end, the inventors have advantageously devised that the technical solutions described below are created in this context.

Disclosure of utility model

The utility model aims to provide a backrest and armrest linkage mechanism of a vehicle seat, which has the advantages of compact structure, small number of parts, high reliability and good safety, and is beneficial to realizing linkage of armrests and a seat backrest in opposite directions by adjusting the seat posture by optimizing an internal structure and adding a reversing unit, thereby ensuring linkage of the angle of the seat backrest and the change of the posture of the armrests and effectively improving riding comfort.

The object of the utility model is achieved by a backrest armrest linkage for a vehicle seat, comprising: the backrest side part framework is vertically arranged, and a framework inner cavity is formed in the backrest side part framework in a hollow mode; the angle adjuster unit comprises an angle adjuster body and an angle adjuster driving shaft, wherein the angle adjuster body is arranged at the bottom position of one side of the backrest side plate framework and is used for realizing angle adjustment of the backrest side plate framework, and the angle adjuster driving shaft penetrates through the bottom of the backrest side plate framework along the horizontal direction and stretches into the angle adjuster body to realize transmission connection with the angle adjuster body; the armrest framework is arranged at one side position of the middle part of the backrest side framework; characterized by further comprising: the reversing unit is arranged at the position near the middle part of the height direction of the framework inner cavity, and is used for enabling the backrest side framework and the armrest framework to move in opposite directions; the linkage transmission unit is arranged between the angle adjuster driving shaft and the reversing unit and is used for realizing linkage of the angle adjuster driving shaft and the reversing unit; the transmission locking unit is arranged between the backrest side part framework and the armrest framework, is in transmission connection with the reversing unit, and can drive the armrest framework to rotate under the drive of the reversing unit and can realize the locking of the driving armrest framework.

In a specific embodiment of the present utility model, the reversing unit includes a housing box, a reversing gear assembly, a transitional transmission shaft and an output shaft; the reversing gear assembly is arranged in the accommodating box, the transition transmission shaft penetrates through the accommodating box and is connected to the input end of the reversing gear assembly, the output shaft is connected to the output end of the reversing gear assembly and penetrates out of the accommodating box and the backrest side framework, and the output shaft penetrates through the transmission locking unit and is in transmission connection with the transmission locking unit.

In another specific embodiment of the present utility model, the accommodating box has a left shell and a right shell fixedly connected together in an opposite state, a left shell positioning plate is convexly formed on the outer circumferential surface of the left shell, a right shell positioning plate is convexly formed on the outer circumferential surface of the right shell, the left shell positioning plate and the right shell positioning plate are cooperatively installed together to realize positioning connection of the left shell and the right shell, a plurality of left shell connecting holes are further formed at the edge position of the left shell at intervals, a plurality of right shell connecting holes are also formed at the edge position of the right shell at positions corresponding to the left shell connecting holes, a fastener capable of being screwed into the right shell connecting holes is penetrated through the left shell connecting holes, so that the fixed connection of the left shell and the right shell is realized, and a space between the left shell and the right shell is formed into an accommodating box inner cavity; the reversing gear assembly comprises a transition transmission gear and an output gear, and the transition transmission gear and the output gear are meshed with each other and are both arranged in the inner cavity of the accommodating box; the transition transmission shaft penetrates through the transition transmission gear, a transition transmission shaft connecting sleeve is sleeved on the shaft body of the transition transmission shaft, and the transition transmission shaft connecting sleeve is mounted at the central position of the transition transmission gear in a matched mode, so that the transition transmission shaft is connected with the transition transmission gear in a matched mode, and two end portions of the transition transmission shaft connecting sleeve in the length direction are respectively pivoted on the left shell and the right shell; similarly, the output shaft passes through the output gear and extends towards the transmission locking unit, an output shaft connecting sleeve is sleeved on the shaft body of the output shaft, the output shaft connecting sleeve is mounted at the central position of the output gear in a matched mode, the output shaft is connected with the output gear in a matched mode, and two end portions of the length direction of the output shaft connecting sleeve are respectively pivoted on the left shell and the right shell.

In another specific embodiment of the present utility model, a central locking hole of the transition transmission gear passing through the axial direction of the central locking hole is formed at the central position of the transition transmission gear, and a transition transmission shaft connecting sleeve locking part matched with the shape of the central locking hole of the transition transmission gear is also convexly formed on the transition transmission shaft connecting sleeve, and the transition transmission shaft connecting sleeve locking part is fixedly matched in the central locking hole of the transition transmission gear, so that the fixed connection between the transition transmission shaft connecting sleeve and the transition transmission gear is realized; similarly, an output gear central locking hole penetrating through the output gear is formed in the central position of the output gear, and an output shaft sleeve locking part matched with the output gear central locking hole in shape is formed on the output shaft sleeve in a protruding mode, and the output shaft sleeve locking part is fixedly matched in the output gear central locking hole, so that the output shaft sleeve and the output gear are matched and connected.

In still another specific embodiment of the present utility model, the linkage transmission unit includes a driving wheel, a driven wheel and a synchronous belt, the driving wheel is sleeved on the shaft body of the driving shaft of the angle adjuster, the driven wheel is sleeved on the shaft body of the transition transmission shaft outside the accommodating box, the driving wheel is disposed at a lower position corresponding to the driven wheel, and the synchronous belt is sleeved between the driving wheel and the driven wheel, so that synchronous rotation can be performed between the driving wheel and the driven wheel, and transmission connection between the driving shaft of the angle adjuster and the transition transmission shaft is realized.

In yet another embodiment of the present utility model, the transmission locking unit includes a transmission gear housing, an inner housing, an outer housing, a connecting locking assembly and a handrail drive shaft; the transmission gear shell is arranged at a position close to the side framework of the backrest, the output shaft of the reversing unit is matched and arranged at the center of the transmission gear shell in a penetrating way, and the output shaft is fixedly connected with the transmission gear shell; the inner cover shell is close to the transmission gear shell and is fixedly connected with the body of the transmission gear shell, and the transmission gear shell can drive the inner cover shell to rotate; the outer cover shell is arranged at a position close to the armrest framework, the connecting locking assembly is arranged between the inner cover shell and the outer cover shell, the armrest driving shaft is arranged in the connecting locking assembly and the outer cover shell in a penetrating mode, the armrest driving shaft is in transmission connection with the connecting locking assembly, and the armrest driving shaft also penetrates into the end portion of the armrest framework and can drive the armrest framework to rotate.

In a further specific embodiment of the utility model, a plurality of transmission gear housing locking blocks are convexly arranged on the surface of one side of the transmission gear housing, which is far away from the backrest side skeleton, and a plurality of inner housing locking holes are formed in the inner housing at positions corresponding to the plurality of transmission gear housing locking blocks, and the plurality of transmission gear housing locking blocks can be matched and installed into the corresponding inner housing locking holes, so that the matched connection of the transmission gear housing body and the inner housing body is realized.

In a further specific embodiment of the present utility model, an armrest driving shaft engaging sleeve is further provided at an end portion of the armrest driving shaft in a length direction thereof remote from the outer housing, an armrest driving shaft engaging sleeve locking plate is formed at an end portion of the armrest driving shaft engaging sleeve close to the armrest frame, an armrest frame connecting plate is further provided at a position corresponding to the armrest driving shaft on the armrest frame, an armrest frame connecting plate locking hole penetrating a thickness direction thereof is further provided on the armrest frame connecting plate, the armrest driving shaft engaging sleeve is capable of penetrating the armrest frame, and the armrest driving shaft engaging sleeve locking plate is capable of being engaged and mounted in the armrest frame connecting plate locking hole, thereby achieving an engaged connection of the armrest driving shaft engaging sleeve and the armrest frame connecting plate.

In yet another specific embodiment of the present utility model, a connection bracket is also mounted on the recliner body of the recliner unit, the connection bracket being positioned at a lower location of the recliner body and the connection bracket being adapted to secure with the seat bottom pelvic frame.

In yet another specific embodiment of the present utility model, the transition drive shaft and the output shaft are both spline shafts.

The technical scheme provided by the utility model has the technical effects that: firstly, through optimizing the internal structure and adding a reversing unit and a linkage transmission unit, when the driving shaft of the angle adjuster rotates, the reversing unit and the linkage transmission unit can be driven to move together, and finally, the armrest framework and the backrest move towards opposite directions, so that the linkage of the angle of the backrest and the change of the posture of the armrest is realized, the armrest is kept in a horizontal state in the adjusting process of the backrest, the adjusting of the posture of the seat accords with the characteristics of human engineering, the synchronous operation of the backrest and the armrest can be realized by using the same driving, the action consistency is good, comfortable and reliable use experience is provided, and meanwhile, the riding safety can be improved; in addition, the technical scheme of the utility model can realize the linkage of the backrest and the armrest by only adding the reversing unit and the linkage transmission unit, can realize quick, simple and convenient transformation on the basis of the existing seat electric angle adjuster, has compact structure and less parts, is convenient for production, can reduce the production cost, and has good operation reliability.

Drawings

FIG. 1 is a schematic diagram of an overall structure of an embodiment of the present utility model;

FIG. 2 is an exploded view of the three-dimensional structure of the present utility model;

FIG. 3 is an exploded view of the present utility model in another perspective;

Fig. 4 is an exploded view of the structure of the reversing unit in the present utility model.

In the figure: 1. a backrest side skeleton, 11. Skeleton cavity; 2. the angle adjuster unit comprises an angle adjuster body, a connecting bracket and a driving shaft, wherein the angle adjuster body is arranged in the angle adjuster unit, and the connecting bracket is arranged in the angle adjuster body; 3. the handrail framework, 31. Handrail framework connecting plate, 311. Handrail framework connecting plate locking hole; 4. the reversing unit, 41, the housing box, 411, the left housing, 4111, the left housing locating plate, 4112, the left housing connecting hole, 412, the right housing, 4121, the right housing locating plate, 4122, the right housing connecting hole, 413, the housing box inner cavity, 42, the reversing gear assembly, 421, the transition drive gear, 4211, the transition drive gear center lock hole, 422, the output gear, 4221, the output gear center lock hole, 43, the transition drive shaft, 431, the transition drive shaft connecting sleeve, 4311, the transition drive shaft connecting sleeve lock, 44, the output shaft, 441, the output shaft connecting sleeve, 4411, the output shaft connecting sleeve lock. 5. The linkage transmission unit, 51, driving wheel, 52, driven wheel, 53 and synchronous belt; 6. the transmission locking unit 61, the transmission gear shell 611, the transmission gear shell locking block 62, the inner housing and 621, the inner housing locking hole 63, the outer housing and 64, the connection locking assembly 65, the handrail driving shaft 651, the handrail driving shaft matching sleeve 6511, the handrail driving shaft matching sleeve locking plate 66 and the protection cover body.

Detailed Description

Reference will now be made in detail to the present embodiments, examples of which are illustrated in the accompanying drawings, wherein the scope of the present utility model is defined by the claims, and wherein the claims are not to be construed as limiting the scope of the present utility model.

In the following description, any reference to the directional or azimuthal aspects of up, down, left, right, front and rear is not to be construed as a specific limitation on the solution provided by the present utility model, since the positional states in which the illustrations are being described are shown.

Referring to fig. 1-3, a backrest armrest linkage for a vehicle seat is shown, comprising: the backrest side part framework 1 is vertically arranged, a framework inner cavity 11 is formed in the backrest side part framework 1 in a hollow mode, and the backrest side part framework 1 is composed of two sheet metal brackets which are mutually buckled and fixedly connected together; a recliner unit 2, the recliner unit 2 including a recliner body 21 and a recliner driving shaft 22, the recliner body 21 being installed at a bottom position of one side of the backrest side plate frame 2 and for performing angular adjustment of the backrest side frame 1, the recliner driving shaft 22 passing through the bottom of the backrest side frame 1 in a horizontal direction and penetrating into the recliner body 21 to perform transmission connection therewith, and the recliner driving shaft 22 being connected to a driving motor output end of a backrest driving motor module, the recliner driving shaft 22 being rotatable under driving of a driving motor; an armrest frame 3 provided at a position on one side of the middle of the aforementioned backrest side frame 1, the armrest frame 3 being provided as an internal support member of a vehicle seat armrest in the interior of a vehicle seat armrest mechanism, and the armrest frame 3 being movable between a first position in which the armrest frame 3 as a whole is provided in a horizontal state so that the armrest body can form a support surface, and a second position in which the armrest frame 3 extends substantially in a plane perpendicular to the plane so that the armrest body can release space.

The technical innovation points of the technical scheme provided by the utility model are as follows: the backrest and armrest linkage mechanism of the vehicle seat further comprises a reversing unit 4, wherein the reversing unit 4 is arranged at a position near the middle part of the height direction of the framework inner cavity 11, and the reversing unit 4 is used for enabling the backrest side framework 1 and the armrest framework 3 to move in opposite directions; a linkage transmission unit 5 provided between the recliner drive shaft 22 and the reversing unit 4, and configured to realize linkage of the recliner drive shaft and the reversing unit 5; the transmission locking unit 6 is arranged between the backrest side frame 1 and the armrest frame 3, the transmission locking unit 6 is in transmission connection with the reversing unit 4, and the transmission locking unit 6 can drive the armrest frame 4 to rotate under the drive of the reversing unit 4 and can realize the locking of the armrest frame 4.

Referring to fig. 4 in combination with fig. 2 and 3, the reversing unit 4 further includes a housing box 41, a reversing gear assembly 42, a transitional transmission shaft 43 and an output shaft 44, wherein the reversing gear assembly 42 is disposed in the housing box 41, the transitional transmission shaft 43 passes through the housing box 41 and is connected to the input end of the reversing gear assembly 42, the transitional transmission shaft 43 is disposed inside the backrest side frame 1, the output shaft 44 is connected to the output end of the reversing gear assembly 42 and passes out of the housing box 41 and the backrest side frame 1, and the output shaft 44 penetrates the transmission locking unit 6 and is in transmission connection therewith.

In the present embodiment, the accommodating box 41 has a left housing 411 and a right housing 412 fixedly connected together in an opposite state, a left housing positioning plate 4111 is formed by protruding on an outer circumferential surface of the left housing 411, a right housing positioning plate 4121 is formed by protruding on an outer circumferential surface of the right housing 412, the left housing positioning plate 4111 and the right housing positioning plate 4121 are mounted together in a mating manner to realize positioning connection of the left housing 411 and the right housing 412, a plurality of left housing connecting holes 4112 are also provided at an edge position of the left housing 411 at intervals, a plurality of right housing connecting holes 4122 are also provided at an edge position of the right housing 412 and at a position corresponding to the left housing connecting holes 4111, fasteners capable of being screwed into the right housing connecting holes 4122 are provided through the left housing connecting holes 4112, thereby realizing fixed connection of the left housing 411 and the right housing 412, and the accommodating box 413 is formed as an inner cavity between the left housing 411 and the right housing 412; the reversing gear assembly 42 includes a transition gear 421 and an output gear 422, wherein the transition gear 421 and the output gear 422 are meshed with each other and both are disposed in the inner cavity 413 of the accommodating box; the transition transmission shaft 43 passes through the transition transmission gear 421, and a transition transmission shaft connecting sleeve 431 is sleeved on the shaft body of the transition transmission shaft 43, the transition transmission shaft connecting sleeve 431 is mounted at the center position of the transition transmission gear 421 in a matching manner, so that the transition transmission shaft 43 is connected with the transition transmission gear 421 in a matching manner, and two end parts of the transition transmission shaft connecting sleeve 431 in the length direction are respectively pivoted on the left shell 411 and the right shell 412; similarly, the output shaft 44 passes through the output gear 422 and extends towards the transmission locking unit 6, an output shaft connecting sleeve 441 is sleeved on the shaft body of the output shaft 44, the output shaft connecting sleeve 441 is mounted at the center position of the output gear 422 in a matching manner, so that the output shaft 44 and the output gear 422 are connected in a matching manner, and two end parts of the output shaft connecting sleeve 441 in the length direction are respectively pivoted on the left shell 411 and the right shell 412; the above-mentioned transition transmission gear 421 and the output gear 422 realize meshing transmission, and the transition transmission gear 421 can drive the output gear 422 to rotate and make the output gear 422 move towards the opposite direction, so that the rotation direction of the transition transmission shaft 43 and the rotation direction of the output shaft 44 are opposite, and the rotation direction is converted, so that the forward direction switching, i.e. the reversing function is realized.

In this embodiment, a central locking hole 4211 of the transitional transmission gear passing through the axial direction of the transitional transmission gear 421 is formed at the central position of the transitional transmission gear 421, and a transitional transmission shaft connecting sleeve locking portion 4311 adapted to the shape of the central locking hole 4211 of the transitional transmission gear is further formed on the transitional transmission shaft connecting sleeve 431 in a protruding manner, and the transitional transmission shaft connecting sleeve locking portion 4311 is fixedly matched in the central locking hole 4211 of the transitional transmission gear, so as to realize the fixed connection between the transitional transmission shaft connecting sleeve 431 and the transitional transmission gear 421; similarly, an output gear central locking hole 4221 penetrating the axial direction of the output gear 422 is also formed at the central position of the output gear 422, and an output shaft sleeve locking portion 4411 adapted to the shape of the output gear central locking hole 4221 is also formed on the output shaft sleeve 441 in a protruding manner, and the output shaft sleeve locking portion 4411 is fixedly fitted in the output gear central locking hole 4221, so as to realize the fitting connection between the output shaft sleeve 441 and the output gear 422.

Referring to fig. 2 and 3, the linkage transmission unit 5 includes a driving wheel 51, a driven wheel 52 and a synchronous belt 53, wherein the driving wheel 51 is sleeved on the shaft body of the recliner driving shaft 22, the driven wheel 52 is sleeved on the shaft body of the transitional driving shaft 43 outside the accommodating box 41, the driving wheel 51 is disposed at a lower position corresponding to the driven wheel 52, and the synchronous belt 53 is sleeved between the driving wheel 51 and the driven wheel 52, so that the driving wheel 51 and the driven wheel 52 can synchronously rotate, and the transmission connection between the recliner driving shaft 22 and the transitional driving shaft 43 is realized; the driving wheel 51 and the driven wheel 52 are both pulleys and are provided with transmission teeth thereon, the synchronous belt 53 is a belt, and the synchronous belt 53 is provided with meshing transmission teeth for corresponding meshing. Of course, the forms of the driving wheel 51 and the driven wheel 52 are not limited thereto, and the driving wheel and the driven wheel may be gears, and the timing belt 53 may be a chain, etc., which will not be described herein.

In this embodiment, the transmission locking unit 6 includes a transmission gear housing 61, an inner housing 62, an outer housing 63, a connecting locking assembly 64 and a handrail driving shaft 65; the transmission gear shell 61 is arranged at a position close to the backrest side skeleton 1, the output shaft 44 of the reversing unit 4 is matched and penetrated at the center position of the transmission gear shell 61, and the output shaft 44 is fixedly connected with the transmission gear shell 61; the inner cover shell 62 is close to the transmission gear shell 61 and is fixedly connected with the body of the transmission gear shell 61, and the transmission gear shell 61 can drive the inner cover shell 62 to rotate; the outer cover 63 is disposed close to the armrest frame 3, the connecting locking assembly 64 is disposed between the inner cover 62 and the outer cover 63, the armrest driving shaft 65 is inserted into the connecting locking assembly 64 and the outer cover 63, the armrest driving shaft 65 is in transmission connection with the connecting locking assembly 64, and the armrest driving shaft 65 is inserted into the end of the armrest frame 3 and can drive the armrest frame 3 to rotate; the transmission locking unit 6 further comprises a protective cover 66 capable of being sleeved outside the inner cover 62, the outer cover 63 and the connecting locking assembly 64, and the protective cover 66 can provide effective protection for the components; in addition, the aforementioned connection locking assembly 64 can stably provide a damping force to the armrest driving shaft 65, so as to achieve a reliable hovering operation of the armrest frame 3, and when a user can achieve a rotation of the armrest to achieve an optimal use position by pulling the armrest body, the internal structure and working principle of the connection locking assembly 64 can be referred to in patent document CN218750445U (an armrest locking hovering mechanism of an automobile seat) filed by the present inventor, and will not be described herein.

In the present embodiment, a plurality of driving gear case locking blocks 611 are formed to protrude from a surface of the driving gear case 61 on a side thereof remote from the backrest side frame 1, and a plurality of inner case locking holes 621 are formed in the inner case 62 at positions corresponding to the plurality of driving gear case locking blocks 611, and the plurality of driving gear case locking blocks 611 can be fitted into the respective corresponding inner case locking holes 621, thereby achieving a fitting connection of the driving gear case 61 body and the inner case 62 body.

Further, a handrail driving shaft engaging sleeve 651 is further fitted over an end portion of the handrail driving shaft 65 in a length direction thereof which is far from the outer case 63, a handrail driving shaft engaging sleeve locking plate 6511 is formed on an end portion of the handrail driving shaft engaging sleeve 651 which is close to the handrail frame 3, a handrail frame connecting plate 31 is further provided on the handrail frame 3 at a position corresponding to the handrail driving shaft 65, a handrail frame connecting plate locking hole 311 penetrating a thickness direction thereof is further provided on the handrail frame connecting plate 31, the handrail driving shaft engaging sleeve 651 can pass through the handrail frame 31, and the handrail driving shaft engaging sleeve locking plate 6511 can be engaged and mounted in the handrail frame connecting plate locking hole 311, thereby achieving the engaged connection of the handrail driving shaft engaging sleeve 651 and the handrail frame connecting plate 31.

Further, a connection bracket 211 is further installed on the recliner body 21 of the recliner unit 2, the connection bracket 211 is positioned at a lower position of the recliner body 21, and the connection bracket 211 is used for fixedly connecting with the seat bottom pelvis frame.

Preferably, the transition transmission shaft 43 and the output shaft 44 are spline shafts; the transitional driving shaft connection sleeve 431 and the output shaft connection sleeve 441 are correspondingly provided as spline shaft sleeves.

Referring to fig. 1 to 3, the present inventors briefly describe the working principle of the present utility model: when a user needs to adjust the angle of the backrest to obtain a better riding posture, when the backrest is required to be reclined backwards, namely the backrest side frame 1 is enabled to rotate backwards as a whole, a backrest driving motor module is electrified and a driving motor controlled to work, the driving motor drives a recliner driving shaft 22 to rotate, the recliner driving shaft 22 drives a recliner body 21 to move, the recliner body 21 further drives the backrest side frame 1 to rotate backwards, so that the backrest can rotate backwards, in the process, the recliner driving shaft 22 can drive a driving wheel 51 arranged on the shaft body of the recliner driving shaft to rotate, and the driven wheel 52 is enabled to synchronously rotate through the transmission of a synchronous belt 53, the driven wheel 52 drives a transition transmission shaft 43 and a transition transmission gear 421 to rotate again, the transition transmission gear 421 and the recliner driving shaft 22 keep the same rotation direction, the transition transmission gear 421 further drives the output gear 422 and the output shaft 43 to reversely rotate, the transmission shaft 43 further drives the transmission gear housing 61, and the armrest driving shaft 65 drives the armrest framework 3 to rotate through transmission of the components of the transmission locking unit 6, and the armrest framework 3 can rotate in the direction opposite to the rotation direction of the seat back, and the armrest framework 3 can move downwards around the armrest driving shaft 65 integrally to keep the armrest framework in a horizontal state all the time, so that the linkage of the seat back and the armrest is realized, and the two can reversely rotate, so that the adjustment of the seat posture accords with the ergonomics, the action consistency is good, the structure is compact and simple, and the riding safety can be improved; when the backrest integrally rotates forwards, namely the backrest side framework 1 integrally rotates forwards, the backrest driving motor drives the recliner driving shaft 22 to rotate reversely, the recliner body 21 is further driven to rotate simultaneously, the recliner body 21 further drives the backrest side framework 1 fixedly connected with the recliner driving shaft to rotate forwards, the backrest rotates forwards together, the recliner driving shaft 22 further drives the linkage transmission unit 5 to move, the output gear 422 and the output shaft 43 are further driven to rotate in opposite directions with the recliner driving shaft 22 through the transmission of the reversing unit 4, the armrest framework 3 can move upwards around the armrest driving shaft 65 integrally through the transmission of the transmission locking unit 6, the moving direction of the armrest body is opposite to that of the backrest body, and the armrest body is kept in a horizontal state all the time, so that a passenger always has a more comfortable riding state in the adjustment process of the posture of the backrest is ensured.

In summary, the technical scheme provided by the utility model overcomes the defects in the prior art, successfully completes the task of the utility model, and faithfully honors the technical effects carried by the applicant in the technical effect column above.

Claims (10)

1. A backrest armrest linkage mechanism for a vehicle seat, comprising: a backrest side framework (1), wherein the backrest side framework (1) is vertically arranged and a framework inner cavity (11) is formed in the backrest side framework in a hollow mode; the angle adjuster unit (2) comprises an angle adjuster body (21) and an angle adjuster driving shaft (22), wherein the angle adjuster body (21) is arranged at the bottom position of one side of the backrest side plate framework (2) and is used for realizing angle adjustment of the backrest side plate framework (1), and the angle adjuster driving shaft (22) penetrates through the bottom of the backrest side plate framework (1) along the horizontal direction and penetrates into the angle adjuster body (21) to realize transmission connection with the backrest side plate framework; the armrest framework (3) is arranged at one side position of the middle part of the backrest side framework (1); characterized by further comprising: the reversing unit (4) is arranged at the position near the middle part of the height direction of the framework inner cavity (11), and the reversing unit (4) is used for enabling the backrest side framework (1) and the armrest framework (3) to move in opposite directions; the linkage transmission unit (5) is arranged between the angle adjuster driving shaft (22) and the reversing unit (4) and is used for realizing linkage of the angle adjuster driving shaft and the reversing unit; the transmission locking unit (6), this transmission locking unit (6) set up between back lateral part skeleton (1) and handrail skeleton (3), and this transmission locking unit (6) with switching-over unit (4) transmission is connected, and this transmission locking unit (6) can drive handrail skeleton (4) rotation and can realize the locking of drive handrail skeleton (4) under the drive of switching-over unit (4).

2. The backrest armrest linkage of a vehicle seat as recited in claim 1, wherein: the reversing unit (4) comprises a containing box (41), a reversing gear assembly (42), a transition transmission shaft (43) and an output shaft (44); the reversing gear assembly (42) is arranged in the accommodating box (41), the transition transmission shaft (43) penetrates through the accommodating box (41) and is connected to the input end of the reversing gear assembly (42), the output shaft (44) is connected to the output end of the reversing gear assembly (42) and penetrates out of the accommodating box (41) and the backrest side framework (1), and the output shaft (44) penetrates into the transmission locking unit (6) and is in transmission connection with the transmission locking unit.

3. A backrest armrest linkage of a vehicle seat as recited in claim 2, wherein: the accommodating box (41) is provided with a left shell (411) and a right shell (412) which are fixedly connected together in an opposite state, a left shell positioning plate (4111) is formed by protruding on the outer circumferential surface of the left shell (411), a right shell positioning plate (4121) is formed by protruding on the outer circumferential surface of the right shell (412), the left shell positioning plate (4111) and the right shell positioning plate (4121) are matched and installed together so as to realize the positioning connection of the left shell (411) and the right shell (412), a plurality of left shell connecting holes (4112) are further arranged at the edge position of the left shell (411) at intervals, a plurality of right shell connecting holes (4122) are also formed at the edge position of the right shell (412) at the position corresponding to the left shell connecting holes (4111), and a fastener capable of being rotatably matched into the right shell connecting holes (4122) is arranged in a penetrating way in the left shell connecting holes (4112), so that the left shell (412) and the right shell (412) are fixedly connected with the inner cavity (413); the reversing gear assembly (42) comprises a transition transmission gear (421) and an output gear (422), wherein the transition transmission gear (421) and the output gear (422) are meshed with each other and are both arranged in the inner cavity (413) of the accommodating box; the transition transmission shaft (43) passes through the transition transmission gear (421), a transition transmission shaft connecting sleeve (431) is sleeved on the shaft body of the transition transmission shaft (43), the transition transmission shaft connecting sleeve (431) is arranged at the central position of the transition transmission gear (421) in a matched mode, and therefore the matched connection of the transition transmission shaft (43) and the transition transmission gear (421) is achieved, and two end portions of the transition transmission shaft connecting sleeve (431) in the length direction are respectively pivoted on the left shell (411) and the right shell (412); similarly, the output shaft (44) passes through the output gear (422) and extends towards the transmission locking unit (6), an output shaft sleeve (441) is sleeved on the shaft body of the output shaft (44) in the same way, the output shaft sleeve (441) is mounted at the central position of the output gear (422) in a matched mode, therefore, the output shaft (44) is connected with the output gear (422) in a matched mode, and two end portions of the length direction of the output shaft sleeve (441) are respectively pivoted on the left shell (411) and the right shell (412).

4. A backrest armrest linkage of a vehicle seat as recited in claim 3, wherein: a central locking hole (4211) penetrating through the central transmission gear is formed in the central position of the transition transmission gear (421), a transition transmission shaft connecting sleeve locking part (4311) matched with the shape of the central locking hole (4211) of the transition transmission gear is formed on the transition transmission shaft connecting sleeve (431) in a protruding mode, and the transition transmission shaft connecting sleeve locking part (4311) is fixedly matched in the central locking hole (4211) of the transition transmission gear, so that the transition transmission shaft connecting sleeve (431) is fixedly connected with the transition transmission gear (421); similarly, an output gear central locking hole (4221) penetrating through the axial direction of the output gear is formed in the central position of the output gear (422), an output shaft sleeve locking part (4411) matched with the shape of the output gear central locking hole (4221) is formed on the output shaft sleeve (441) in a protruding mode, and the output shaft sleeve locking part (4411) is fixedly matched in the output gear central locking hole (4221), so that the output shaft sleeve (441) is matched and connected with the output gear (422).

5. A backrest armrest linkage of a vehicle seat as recited in claim 2, wherein: the linkage transmission unit (5) comprises a driving wheel (51), a driven wheel (52) and a synchronous belt (53), wherein the driving wheel (51) is sleeved on the shaft body of the angle adjuster driving shaft (22), the driven wheel (52) is sleeved on the shaft body of the transition transmission shaft (43) which is positioned outside the accommodating box (41), the driving wheel (51) is arranged at the lower position corresponding to the driven wheel (52), and the synchronous belt (53) is sleeved between the driving wheel (51) and the driven wheel (52), so that the driving wheel (51) and the driven wheel (52) can synchronously rotate, and the transmission connection between the angle adjuster driving shaft (22) and the transition transmission shaft (43) is realized.

6. A backrest armrest linkage of a vehicle seat as recited in claim 2, wherein: the transmission locking unit (6) comprises a transmission gear shell (61), an inner housing (62), an outer housing (63) and a connecting locking assembly (64) and a handrail driving shaft (65); the transmission gear shell (61) is arranged at a position close to the backrest side framework (1), the output shaft (44) of the reversing unit (4) is matched and arranged at the center position of the transmission gear shell (61) in a penetrating way, and the output shaft (44) is fixedly connected with the transmission gear shell (61); the inner cover shell (62) is close to the transmission gear shell (61) and is fixedly connected with the body of the transmission gear shell (61), and the transmission gear shell (61) can drive the inner cover shell (62) to rotate; the outer cover shell (63) is arranged at a position close to the armrest framework (3), the connecting locking assembly (64) is arranged between the inner cover shell (62) and the outer cover shell (63), the armrest driving shaft (65) is arranged in the connecting locking assembly (64) and the outer cover shell (63) in a penetrating mode, the armrest driving shaft (65) is in transmission connection with the connecting locking assembly (64), and the armrest driving shaft (65) also penetrates into the end portion of the armrest framework (3) and can drive the armrest framework (3) to rotate.

7. The backrest armrest linkage of a vehicle seat as recited in claim 6, wherein: a plurality of transmission gear shell locking blocks (611) are convexly arranged on the surface of one side, far away from the backrest side framework (1), of the transmission gear shell (61), a plurality of inner cover shell locking holes (621) are formed in the inner cover shell (62) and at positions corresponding to the transmission gear shell locking blocks (611), and the transmission gear shell locking blocks (611) can be matched and installed into the corresponding inner cover shell locking holes (621), so that the matched connection of the transmission gear shell (61) body and the inner cover shell (62) body is realized.

8. The backrest armrest linkage of a vehicle seat as recited in claim 6, wherein: an armrest driving shaft matching sleeve (651) is sleeved on one end part of the armrest driving shaft (65) far away from the outer cover shell (63) in the length direction, an armrest driving shaft matching sleeve locking plate (6511) is formed on the end part of the armrest driving shaft matching sleeve (651) close to the armrest framework (3), an armrest framework connecting plate (31) is further arranged on the armrest framework (3) and at the position corresponding to the armrest driving shaft (65), an armrest framework connecting plate locking hole (311) penetrating through the armrest framework connecting plate in the thickness direction is further formed in the armrest framework connecting plate (31), the armrest driving shaft matching sleeve (651) can penetrate through the armrest framework (31), and the armrest driving shaft matching sleeve locking plate (6511) can be matched and installed in the armrest framework connecting plate locking hole (311), so that the armrest driving shaft matching sleeve (651) is matched and connected with the armrest framework connecting plate (31).

9. The backrest armrest linkage of a vehicle seat as recited in claim 1, wherein: a connecting bracket (211) is also arranged on the angle adjuster body (21) of the angle adjuster unit (2), the connecting bracket (211) is positioned and arranged at the lower part of the angle adjuster body (21), and the connecting bracket (211) is used for realizing fixedly connection with the pelvic frame at the bottom of the seat.

10. The backrest armrest linkage of a vehicle seat as recited in claim 1, wherein: the transition transmission shaft (43) and the output shaft (44) are spline shafts.