CN117360336A

CN117360336A - Seat driving device, seat and vehicle

Info

Publication number: CN117360336A
Application number: CN202210769805.7A
Authority: CN
Inventors: 韦斌; 杨刚平; 王瑞义; 朱艳柏
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2024-01-09

Abstract

The invention discloses a seat driving device, a seat and a vehicle. The seat driving device comprises a driving component and at least two transmission components; the transmission assembly comprises a clutch, a clutch driving wheel, a driving flexible connecting belt and a clutch driven wheel; the first end of the clutch is connected to the drive assembly; the clutch driving wheel is connected to the second end of the clutch; the driving flexible connecting belt is connected to the clutch driving wheel so that the clutch driven wheel can drive the driving flexible connecting belt to move; the clutch driven wheel is connected to the driving flexible connecting belt so that the driving flexible connecting belt can drive the clutch driven wheel to rotate; different clutched driven wheels are used to connect to different parts of the seat to drive movement of the different parts of the seat. Therefore, one driving component can be used for driving at least two clutch driven wheels to rotate, so that the movement of different parts of the seat is driven, the number of parts of the seat driving device is small, the structure is simple, and the cost is low.

Description

Seat driving device, seat and vehicle

Technical Field

The invention relates to the field of traffic, in particular to a seat driving device, a seat and a vehicle.

Background

Existing vehicles include seats. The seat comprises a seat frame, a backrest, a leg support and a cushion. In the case of a seat mounted on a vehicle, the seat frame is arranged horizontally. The cushion can be arranged at the upper end of the seat frame. The user can sit on the cushion at this time. The backrest is connected to one end of the seat frame, and a user can lean against the backrest. The leg rest is connected to an end of the seat frame remote from the backrest. The legs of the user sitting on the seat cushion can be placed on the leg rest.

Wherein, in the case of the seat being mounted to the vehicle, the seat frame is movable in the front-rear direction of the vehicle and movable in the vertical direction. The backrest is rotatable relative to the seat frame. The leg rest is rotatable relative to the mount. The movement of the seat frame in the front-rear direction of the vehicle, the movement of the seat frame in the vertical direction, the rotation of the backrest relative to the seat frame, and the rotation of the leg rest relative to the seat frame are driven by separate motors, respectively. Thus, the number of motors of the seat is large, and the cost is high.

Disclosure of Invention

In the summary, a series of concepts in simplified form are introduced, which will be further described in detail in the detailed description. The summary of the invention is not intended to define the key features and essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

To at least partially solve the above technical problems, the present invention provides a seat driving device, including:

a drive assembly;

at least two drive assemblies, the drive assembly includes:

a clutch having a first end connected to the drive assembly;

a clutch driving wheel connected to the second end of the clutch;

the driving flexible connecting belt is connected to the clutch driving wheel so that the clutch driven wheel can drive the driving flexible connecting belt to move;

the clutch driven wheel is connected to the driving flexible connecting belt so that the driving flexible connecting belt can drive the clutch driven wheel to rotate;

wherein different clutched driven wheels are used to connect to different parts of the seat to drive movement of the different parts of the seat.

According to the seat driving device provided by the invention, the first ends of the clutches of all the transmission assemblies are connected to the driving assemblies, the second ends of the clutches are connected to the clutch driving wheel in each transmission assembly, and the clutch driving wheel and the clutch driven wheel are connected with the active flexible connecting belt, so that one driving assembly can be used for driving the second ends of the clutches of at least two transmission assemblies to rotate so as to drive the movement of the seat, the number of parts of the seat driving device is small, the structure is simple, and the cost is low.

Optionally, the clutch and the drive output shaft of the drive assembly are coaxially arranged.

Optionally, the active flexible connection strip is a synchronous strip.

Optionally, the seat driving device further comprises a first-stage idler pulley and a first-stage transitional flexible connecting belt, wherein the first-stage idler pulley is connected to the active flexible connecting belt, the active flexible connecting belt is connected to the clutch driving wheel, the first-stage idler pulley is connected to the first-stage transitional flexible connecting belt, and the first-stage transitional flexible connecting belt is connected to the clutch driven wheel.

Optionally, the seat drive further comprises a second stage idler pulley and a second stage transitional flexible connection belt, the second stage idler pulley is connected to the first stage transitional flexible connection belt, the first stage transitional flexible connection belt is connected to the first stage idler pulley, the second stage idler pulley is connected to the second stage transitional flexible connection belt, and the second stage transitional flexible connection belt is connected to the clutch driven pulley.

Optionally, the seat driving device further comprises a corner connector, the corner connector is provided with a corner input shaft and a corner output shaft, the axial direction of the corner input shaft is perpendicular to the axial direction of the corner output shaft, the corner input shaft is connected to the corner output shaft, so that the corner input shaft can drive the corner output shaft to rotate, one end of the corner input shaft is connected to the clutch driven wheel, and one end of the corner output shaft is used for being connected to the seat.

Optionally, the corner connector comprises a first bevel gear and a second bevel gear, the first bevel gear and the second bevel gear meshing, the first bevel gear being connected to the corner input shaft, the second bevel gear being connected to the corner output shaft.

Optionally, the seat drive apparatus further comprises a reduction assembly comprising a reduction input shaft connected to the clutch driven wheel and a reduction output shaft for connection to the seat.

Alternatively, the drive assembly has drive output shafts at both ends for connection to different clutches, respectively.

Optionally, the seat driving device further comprises a first clutch mounting seat and a second clutch mounting seat, the first clutch mounting seat and the second clutch mounting seat are mutually separated along the axial direction of the driving output shaft, and the first clutch mounting seat and the second clutch mounting seat are connected to different clutches.

The invention also provides a seat comprising:

a mounting;

a backrest rotatably connected to the seat frame;

a leg rest rotatably connected to the mount; and

according to the seat disclosed by the invention, the seat comprises the seat driving device, the first ends of the clutches of all the transmission assemblies are connected to the driving assemblies, the second ends of the clutches are connected to the clutch driving wheel in each transmission assembly, and the clutch driving wheel and the clutch driven wheel are connected with the active flexible connecting belt, so that one driving assembly can be used for driving the second ends of the clutches of at least two transmission assemblies to rotate so as to drive the movement of the seat, and the seat driving device has the advantages of less parts, simple structure and low cost.

Optionally, the clutch comprises a front-rear clutch connected to the mount for driving the mount to move in a front-rear direction.

Optionally, the clutch comprises a vertical clutch connected to the mount for driving the mount to move in a vertical direction.

Optionally, the clutch comprises a back rest clutch connected to the back rest for driving the back rest in rotation.

Optionally, the clutch comprises a leg rest clutch connected to the leg rest for driving the leg rest in rotation.

The invention also provides a vehicle comprising the seat.

According to the vehicle disclosed by the invention, the vehicle comprises the seat, the seat comprises the seat driving device, the first ends of the clutches of all the transmission assemblies are connected to the driving assemblies, in each transmission assembly, the second ends of the clutches are connected to the clutch driving wheel, and the clutch driving wheel and the clutch driven wheel are connected with the active flexible connecting belt, so that one driving assembly can be used for driving the second ends of the clutches of at least two transmission assemblies to rotate, and further driving the seat to move.

Drawings

In order that the advantages of the invention will be readily understood, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings. Understanding that these drawings depict only typical embodiments of the invention and are not therefore to be considered to be limiting of its scope, the invention will be described and explained with additional specificity and detail through the use of the accompanying drawings.

Fig. 1 is a perspective view of a seat driving device according to a preferred embodiment of the present invention connected to one direction of a seat;

FIG. 2 is a perspective view of the seat drive device of FIG. 1 in another orientation connected to the seat;

FIG. 3 is a perspective view of the seat actuation device of FIG. 1;

FIG. 4 is a perspective view of the drive mount, drive assembly, first clutch mount, first drive shaft, and clutch drive wheel coupled to the first drive shaft of the seat drive apparatus of FIG. 1;

FIG. 5 is a perspective view of the second clutch mount, second drive shaft, and clutch drive wheel coupled to the second drive shaft of the seat drive apparatus of FIG. 1; and

fig. 6 is a perspective view of the corner connector of the seat drive device of fig. 1 connected to the clutch driven wheel.

Description of the reference numerals

110: seat 111: seat frame

112: backrest 120: driving assembly

130: drive mount 131: first clutch mounting seat

132: second clutch mount 140: pressing plate

150: clutch 151: front-rear clutch

152: leg rest clutch 153: vertical clutch

154: back clutch 160: clutch driving wheel

161: front and rear clutch drive wheels 162: leg support clutch driving wheel

163: vertical clutch drive wheel 164: back clutch driving wheel

170: clutch driven wheel 171: front and back clutch driven wheel

172: leg rest clutch driven wheel 173: vertical clutch driven wheel

174: back clutch driven wheel 180: active flexible connecting band

181: front-rear active flexible connection strip 182: leg support initiative flexible connecting band

183: vertical active flexible connection strip 184: active flexible connecting band for backrest

191: first drive shaft 192: second drive shaft

200: first stage idler 201: first stage leg support idler

202: first stage vertical idler 203: first stage back idler

210: first stage transition flexible connection strip 211: transitional flexible connecting band for first-stage leg support

212: first stage vertical transition flexible connection strip 213: first-stage backrest transition flexible connecting band

220: second stage idler 230: second-stage transition flexible connecting band

240: corner connector 241: vertical corner connector

242: backrest rotation angle connector 243: corner input shaft

244: corner output shaft 245: first bevel gear

246: second bevel gear 247: corner rack

250: deceleration assembly 251: leg support deceleration assembly

252: vertical deceleration assembly 253: backrest deceleration assembly

260: idler shaft 270: sliding rail

280: slide rail driving shaft

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that embodiments of the invention may be practiced without one or more of these details. In other instances, well-known features have not been described in detail in order to avoid obscuring the embodiments of the invention.

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be noted that the terms "upper," "lower," and the like are used herein for purposes of illustration only and not limitation.

Herein, ordinal words such as "first" and "second" cited in the present application are merely identifiers and do not have any other meaning, such as a particular order or the like.

In the following description, a detailed structure will be presented for a thorough understanding of embodiments of the present invention. It will be apparent that embodiments of the invention may be practiced without limitation to the specific details that are set forth by those skilled in the art. Preferred embodiments of the present invention are described in detail below, however, the present invention may have other embodiments in addition to these detailed descriptions.

The invention provides a seat driving device. The seat 110 may be used in a vehicle. The vehicle may be a car or a train. As shown in fig. 1 and 2, the seat 110 includes a seat frame 111, a backrest 112, a leg rest (not shown), and a seat cushion (not shown). When the seat 110 is mounted on the vehicle, the seat frame 111 is horizontally disposed. The seat cushion may be provided at the upper end of the seat frame 111. The user can sit on the cushion at this time. The backrest 112 is connected to one end of the seat frame 111, and a user can lean against the backrest 112. The leg rest is connected to an end of the seat frame 111 remote from the backrest 112. The legs of the user sitting on the seat cushion can be placed on the leg rest.

Wherein, in a case where the seat 110 is mounted to the vehicle, the seat frame 111 is movable in the front-rear direction of the vehicle and movable in the vertical direction. The backrest 112 can rotate relative to the seat frame 111. The leg rest is rotatable relative to the mount 111. The seat driving device is used to drive the movement of the seat 110. The movement of the seat 110 includes movement of the seat frame 111 in the front-rear direction of the vehicle, movement of the seat frame 111 in the vertical direction, rotation of the backrest 112 relative to the seat frame 111, and rotation of the leg rest relative to the seat frame 111.

Referring to fig. 1 to 6, the seat driving apparatus includes a driving assembly 120 and a driving mount 130. The drive assembly 120 may be a motor. The drive assembly 120 includes a drive output shaft. Thus, power is provided to the drive assembly 120 to rotate the drive output shaft.

The drive mount 130 is for secure connection to the seat 110. The drive assembly 120 is fixedly coupled to the drive mount 130. In this way, the drive mount 130 supports the drive assembly 120.

Preferably, the seat driving device further includes a pressing plate 140. A portion of the platen 140 is located above a portion of the drive assembly 120. The platen 140 is connected to the drive mount 130. In this way, the platen 140 is able to compress the drive assembly 120 to the drive mount 130.

As shown in fig. 3, the seat drive apparatus further includes a transmission assembly, a drive shaft, and a clutch mount. Each transmission assembly includes a clutch 150. The clutch mount is for connection to the seat 110. The drive shaft is rotatably connected to the clutch mount. One end of the drive shaft is connected to a drive output shaft of the drive assembly 120. Thus, the drive assembly 120 is capable of rotating the drive shaft.

The clutch 150 is a prior art clutch. Such as an electromagnetic clutch. The clutch 150 has a first end and a second end. The second end may be spaced from the first end to enable the first end to rotate relative to the second end. The second end may also be connected to the first end such that the first end is capable of rotating the second end.

A first end of the clutch 150 is nested and connected to the drive shaft. In this way, the drive shaft can rotate the first end of the clutch 150. The second end of the clutch 150 is sleeved on the drive shaft. The second end is rotatable relative to the drive shaft. For example, there is a space between the second end and the outer peripheral surface of the drive shaft. In this way, the drive shaft is able to rotate the second end via the first end with the second end connected to the first end. Under the condition that the second end leaves the first end, the driving shaft drives the first end to rotate, and then the driving shaft rotates relative to the second end.

Referring to fig. 1 to 6, the transmission assembly further includes a clutch driving pulley 160, a clutch driven pulley 170, and a driving flexible connection belt 180. The clutch driving wheel 160 is sleeved on the driving shaft. A clutch driver 160 is connected to a second end of the clutch 150. Thus, the second end of the clutch 150 is capable of rotating the clutch driver 160. The clutch drive 160 is rotatable relative to the drive shaft. For example, there is a space between the clutch driving wheel 160 and the outer peripheral surface of the drive shaft.

The clutched driven wheel 170 is for connection to the seat 110. In this way, the rotating clutch follower 170 can be used to move the seat 110.

An active flexible connecting band 180 is connected to the clutch driving wheel 160 and the clutch driven wheel 170. Thus, the clutch driving wheel 160 drives the active flexible connecting belt 180 to move. The moving active flexible connecting belt 180 drives the clutch driven pulley 170 to rotate.

The transmission assembly is at least two (e.g., four). Each transmission assembly includes a clutch 150, a clutch primary 160, a clutch secondary 170, and a drive flexible connection strap 180. In this way, the user can selectively connect the first end of the clutch 150 of one or at least two transmission assemblies to the second end, thereby causing the drive assembly 120 to rotate the second end of the clutch 150 of at least one transmission assembly at the same time.

In this embodiment, the first ends of the clutches of all the transmission assemblies are connected to the driving assembly 120, in each transmission assembly, the second ends of the clutches are connected to the clutch driving wheel 160, and the clutch driving wheel 160 and the clutch driven wheel 170 are connected to the active flexible connection belt 180, so that one driving assembly 120 can be used to drive the second ends of the clutches of at least two transmission assemblies to rotate, and further drive the movement of the seat 110.

Preferably, as shown in fig. 3-5, the drive shaft, clutch 150, is disposed coaxially with the drive output shaft of the drive assembly 120. Thus, the seat driving device is simple in structure.

As shown in fig. 4, the clutch mount includes a first clutch mount 131. The first clutch mount 131 may be connected to the drive mount 130.

Preferably, the first clutch mount 131 and the drive mount 130 are constructed as a single piece. Thus, the seat driving device is simple in structure.

Referring to fig. 3 and 4, the driving shaft includes a first driving shaft 191. The drive assembly 120 has a drive output shaft at both ends. The first clutch mount 131 is located at one side of the driving assembly 120 in an axial direction of the driving assembly 120. The first drive shaft 191 is connected to the first clutch mount 131. The first drive shaft 191 is connected to a drive output shaft located at one end of the drive assembly 120.

The clutch 150 includes a front-rear clutch 151. The clutch drive 160 includes a front and rear clutch drive 161. The clutch driven wheels 170 include front and rear clutch driven wheels 171. The active flex connection 180 includes front and rear active flex connection 181.

A first end of the front-rear clutch 151 is connected to a first drive shaft 191. The second end of the front-rear clutch 151 is connected to the front-rear clutch driving wheel 161. The front and rear clutch driving wheels 161 are connected to the front and rear driving flexible connection belts 181, and the front and rear driving flexible connection belts 181 are connected to the front and rear clutch driven wheels 171 to drive the front and rear clutch driven wheels 171 to rotate.

The seat drive also includes a slide rail 270 for connection to the vehicle and a fore and aft movement assembly (not shown). With seat 110 attached to the vehicle, the extending direction of slide rail 270 is parallel to the front-rear direction of the vehicle. A portion of the mount 111 extends into the slide rail 270 to move in the extending direction of the slide rail 270. At this time, the slide rail 270 can guide the movement of the mount 111 in the front-rear direction of the vehicle.

The fore and aft movement assembly is connected to the mount 111 and the vehicle. With the seat 110 attached to the vehicle, the fore-and-aft movement assembly is used to move the seat frame 111 in the fore-and-aft direction. The back and forth movement assembly is a prior art and will not be described in detail herein.

The seat actuation device also includes a slide drive shaft 280. The slide drive shaft 280 is rotatably connected to the seat 110. The front clutch driven wheel 171 and the rear clutch driven wheel 171 are sleeved and connected to the slide rail driving shaft 280 for driving the slide rail driving shaft 280 to rotate.

The slide drive shaft 280 is connected to the forward and backward movement assembly. Thus, the rotating slide driving shaft 280 can drive the front-back moving assembly to move, and further drive the seat frame 111 to move along the front-back direction.

Returning to fig. 1-4, the seat drive also includes a first stage idler pulley 200, a first stage transition flexible link belt 210, and an idler shaft 260. The axial direction of the idler shaft 260 is parallel to the axial direction of the drive shaft. The idler shaft 260 is spaced apart from the drive shaft. Idler shaft 260 is adapted to be coupled to seat 110. The first stage idler 200 is sleeved on the idler shaft 260. The first stage idler 200 is rotatable relative to the idler shaft 260. The first stage idler pulley 200 is connected to the active flexible connection belt 180. The active flexible connecting band 180 is connected to the clutch driving wheel 160. The first stage idler pulley 200 is connected to a first stage transition flexible connection belt 210. A first stage transition flexible connection strip 210 is connected to the clutched driven wheel 170.

The clutch driving wheel 160 can drive the active flexible connecting belt 180 to move. The moving active flexible link 180 rotates the first stage idler pulley 200. The rotating first stage idler pulley 200 moves the first stage transition flexible connection strip 210. The moving first stage transitional flexible linkage 210 rotates the clutched driven wheel 170. Thus, the first stage idler pulley 200 and the first stage transition flexible link belt 210 may be provided according to the actual shape of the seat 110, facilitating the configuration of the seat 110.

As shown in fig. 3 and 4, the clutch 150 includes a leg rest clutch 152. The clutch drive 160 includes a leg rest clutch drive 162. The clutch driven wheel 170 includes a leg rest clutch driven wheel 172. The active flex connection strap 180 includes a leg rest active flex connection strap 182. The first stage idler 200 includes a first stage leg rest idler 201. The first stage transitional flexible connection strip 210 includes a first stage leg rest transitional flexible connection strip 211.

The leg rest clutch 152 is located on a side of the front and rear clutches 151 remote from the drive assembly 120 in the axial direction of the drive shaft, and is spaced from the front and rear clutches 151. The first end of the leg rest clutch 152 is connected to a first drive shaft 191. A second end of the leg rest clutch 152 is connected to a leg rest clutch drive wheel 162. The leg rest clutch drive pulley 162 is connected to a leg rest active flexible connection strap 182. The leg rest active flex link 182 is connected to a first stage leg rest idler 201. The first stage leg rest idler 201 is connected to a first stage leg rest transition flexible connection strap 211. The first stage leg rest transition flexible connection strap 211 is connected to the leg rest clutch driven wheel 172 to drive the leg rest clutch driven wheel 172 to rotate.

Referring to fig. 1 to 3, the seat driving apparatus further includes a reduction assembly 250. The housing of the reduction assembly 250 may be connected to the seat 110. The reduction assembly 250 may be a prior art reduction gear. Such as a worm gear reducer. The reduction assembly 250 includes a reduction input shaft and a reduction output shaft. The seat actuation device also includes a leg rest movement assembly (not shown). The deceleration assembly 250 includes a leg rest deceleration assembly 251.

The reduction input shaft of the leg rest reduction assembly 251 is connected to the leg rest clutch driven wheel 172. The reduction output shaft of the leg rest reduction assembly 251 is connected to the leg rest movement assembly. Thus, the leg rest clutch driven wheel 172 can drive the leg rest speed reducing assembly 251 to work, and further drive the leg rest moving assembly to work, so as to drive the leg rest to rotate. In this process, the leg rest speed reducing assembly 251 can increase torque, thereby conveniently driving the leg rest to rotate. The leg rest movement assembly is prior art and will not be described in detail herein.

Referring to fig. 1 to 3, and fig. 6, the seat driving device further includes a corner connector 240. The corner connector 240 has a corner input shaft 243 and a corner output shaft 244. The axial direction of the corner input shaft 243 is perpendicular to the axial direction of the corner output shaft 244. The rotation angle input shaft 243 is connected to the rotation angle output shaft 244, so that the rotation angle input shaft 243 can rotate the rotation angle output shaft 244. One end of the rotation angle input shaft 243 is connected to the clutch driven wheel 170, and one end of the rotation angle output shaft 244 is for connection to the seat 110. In this way, the clutch driven wheel 170 can rotate the rotating shaft whose axial direction is perpendicular to the axial direction of the clutch driven wheel 170 via the rotation angle connector 240.

As shown in fig. 1-5, the clutch mount includes a second clutch mount 132. The drive shaft includes a second drive shaft 192. The second clutch mount 132 is located on a side of the driving assembly 120 remote from the first clutch mount 131 in an axial direction of the driving assembly 120 to be spaced apart from the first clutch mount 131. The second drive shaft 192 is connected to the second clutch mount 132. The second drive shaft 192 is connected to a drive output shaft located at an end of the drive assembly 120 proximate the second clutch mount 132. Therefore, along the axial direction of the driving assembly 120, the clutches are arranged on two sides of the driving assembly 120, torque is output from two ends of the driving assembly 120, and the stress is more stable. In addition, along the axial direction of the driving assembly 120, clutch mounting seats are arranged on two sides of the driving assembly 120, so that the clutch seat driving device can be conveniently mounted.

The clutch 150 includes a vertical clutch 153. The clutch drive 160 includes a vertical clutch drive 163. The clutch driven wheels 170 include vertical clutch driven wheels 173. The active flexible connection strip 180 includes a vertical active flexible connection strip 183. The first stage idler 200 includes a first stage vertical idler 202. The first stage transitional flexible connection strip 210 includes a first stage vertical transitional flexible connection strip 212. The corner connector 240 includes a vertical corner connector 241.

The first end of the vertical clutch 153 is connected to the second drive shaft 192. A second end of the vertical clutch 153 is connected to a vertical clutch drive wheel 163. The vertical clutch drive pulley 163 is connected to a vertical active flexible connecting belt 183. The vertical active flexible connecting belt 183 is connected to the first stage vertical idler 202. The first stage vertical idler 202 is connected to a first stage vertical transition flexible connection belt 212. The first stage vertical transition flexible connection belt 212 is connected to the vertical clutch driven wheel 173 to drive the vertical clutch driven wheel 173 to rotate.

The seat drive also includes a vertical movement assembly (portions of the vertical movement assembly are shown). Deceleration assembly 250 includes a vertical deceleration assembly 252. The vertical movement assembly is connected to the mount 111 and the vehicle. With the seat 110 attached to the vehicle, the vertical movement assembly is used to move the seat frame 111 in a vertical direction. The vertical movement assembly is prior art and will not be described in detail here.

The vertical clutch driven wheel 173 is connected to the rotation angle input shaft 243 of the vertical rotation angle connector 241. The reduction input shaft of the vertical reduction assembly 252 is connected to the corner output shaft 244 of the vertical corner connector 241. The reduction output shaft of the vertical reduction assembly 252 is connected to the vertical movement assembly.

The vertical clutch driven wheel 173 can drive the rotation of the rotation angle output shaft 244 of the vertical rotation angle connector 241. The rotating vertical rotation angle connector 241 has a rotation angle output shaft 244 capable of driving the vertical reduction assembly 252 to work, and further driving the vertical movement assembly to work, so as to drive the seat frame 111 to move along the vertical direction. In this process, the vertical deceleration component 252 can increase torque, so as to conveniently drive the seat frame 111 to move along the vertical direction.

Preferably, as shown in fig. 6, the corner connector 240 includes a first bevel gear 245, a second bevel gear 246, and a corner frame 247. The corner frame 247 may be connected to the seat 110. Both the first bevel gear 245 and the second bevel gear 246 are rotatably connected to the corner frame 247. The first bevel gear 245 and the second bevel gear 246 are meshed. The first bevel gear 245 is connected to the corner input shaft 243 and the second bevel gear 246 is connected to the corner output shaft 244. Thereby, the corner connector 240 is simple in structure.

It will be appreciated that in an embodiment not shown, the corner connector may also be a bevel gear reducer.

Returning to fig. 1-3, the seat drive also includes a second stage idler pulley 220 and a second stage transition flexible link belt 230. The axial direction of the second stage idler 220 is parallel to the axial direction of the drive shaft. The second stage idler 220 is spaced apart from the first stage idler 200. The second stage idler gear 220 is spaced apart from the drive shaft. The second stage idler 220 is adapted to be rotatably coupled to the seat 110. The second stage idler pulley 220 is connected to the first stage transition flexible connection belt 210. A first stage transition flexible connection belt 210 is connected to the first stage idler pulley 200. The second stage idler pulley 220 is connected to a second stage transition flexible connection belt 230. A second stage transition flexible connection strip 230 is connected to the clutched driven wheel 170. Thereby, the structure of the seat 110 is further facilitated.

Preferably, the active flexible connection strip 180, the first stage transition flexible connection strip 210 and the second stage transition flexible connection strip 230 are all synchronous strips. The clutch driving wheel 160, the clutch driven wheel 170, the first stage idle wheel 200 and the second stage idle wheel 220 are all synchronous pulleys. The synchronous belt wheel is a plastic piece. Thus, the weight of the seat drive assembly is small.

It will be appreciated that in embodiments not shown, the active flexible connection strip, the first stage transition flexible connection strip and the second stage transition flexible connection strip may also be chains. At this time, the clutch driving wheel, the clutch driven wheel, the first stage idle wheel and the second stage idle wheel are all chain wheels.

As shown in fig. 1-3, the clutch 150 includes a back clutch 154. The clutch drive 160 includes a back clutch drive 164. The clutched driven wheel 170 includes a back clutched driven wheel 174. The active flex link 180 includes a back active flex link 184. The first stage idler 200 includes a first stage back idler 203. The first stage transition flexible connection strip 210 includes a first stage back transition flexible connection strip 213. The corner connector 240 includes a back corner connector 242.

In the axial direction of the drive shaft, the back clutch 154 is located between the front-rear clutch 151 and the leg rest clutch 152. The first end of the back clutch 154 is connected to a first drive shaft 191. A second end of the back clutch 154 is connected to a back clutch drive wheel 164. The back clutch drive pulley 164 is connected to a back drive flexible connection strap 184. The back active flex link 184 is connected to the first stage back idler 203. The first stage back idler 203 is connected to a first stage back transition flexible link 213. The first stage backrest transition flexible connecting band 213 is connected to the second stage idler 220. The second stage idler pulley 220 is connected to a second stage transition flexible connection belt 230. A second stage transition flexible connection strip 230 is connected to the back clutch driven pulley 174 to drive the back clutch driven pulley 174 in rotation.

The seat drive also includes a backrest movement assembly (not shown). The reduction assembly 250 includes a back reduction assembly 253. The backrest moving assembly is connected to the seat frame 111 and the backrest 112. The backrest moving assembly is used for driving the backrest 112 to rotate relative to the seat frame 111. The backrest moving assembly is a prior art and will not be described in detail herein.

The back clutch driven pulley 174 is connected to the rotation angle input shaft 243 of the back rotation angle connector 242. The reduction input shaft of the back reduction assembly 253 is connected to the corner output shaft 244 of the back corner connector 242. The reduction output shaft of the backrest reduction assembly 253 is connected to the backrest movement assembly.

The back clutch follower 174 can rotate the corner output shaft 244 of the back corner connector 242. The rotating angle output shaft 244 of the backrest angle connector 242 can drive the backrest decelerating assembly 253 to operate, and further drive the backrest moving assembly to operate, thereby driving the backrest 112 to rotate relative to the seat frame 111. In this process, the backrest decelerating assembly 253 can increase torque, thereby facilitating rotation of the backrest 112 relative to the seat frame 111.

The invention also provides a seat 110. The seat 110 includes the seat frame 111, the backrest 112, the leg rest, and the seat drive device described above.

In this embodiment, the seat 110 includes the aforementioned seat driving device, the first ends of the clutches of all the transmission assemblies are connected to the driving assembly 120, in each transmission assembly, the second ends of the clutches are connected to the clutch driving wheel 160, and the clutch driving wheel 160 and the clutch driven wheel 170 are connected to the active flexible connection belt 180, so that one driving assembly 120 can be used to drive the second ends of the clutches of at least two transmission assemblies to rotate, and further drive the movement of the seat 110.

The invention further provides a vehicle. The vehicle includes the seat 110 described previously.

In this embodiment, the vehicle includes the aforementioned seat 110, the seat 110 includes the aforementioned seat driving device, the first ends of the clutches of all the transmission assemblies are all connected to the driving assemblies 120, in each transmission assembly, the second ends of the clutches are connected to the clutch driving wheel 160, and the clutch driving wheel 160 and the clutch driven wheel 170 are all connected to the active flexible connection belt 180, so that one driving assembly 120 can be used to drive the second ends of the clutches of at least two transmission assemblies to rotate, and further drive the movement of the seat 110, the number of parts of the seat driving device is small, the structure is simple, and the cost is low.

The present invention has been illustrated by the above-described embodiments, but it should be understood that the above-described embodiments are for purposes of illustration and description only and are not intended to limit the invention to the embodiments described. In addition, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many variations and modifications are possible in light of the teachings of the invention, which variations and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular implementations only and is not intended to be limiting of the invention. Terms such as "component" as used herein may refer to either a single part or a combination of parts. Terms such as "mounted," "disposed," and the like as used herein may refer to one component being directly attached to another component or to one component being attached to another component through an intermediary. Features described herein in one embodiment may be applied to another embodiment alone or in combination with other features unless the features are not applicable or otherwise indicated in the other embodiment.

Claims

1. A seat drive apparatus, characterized in that the seat drive apparatus comprises:

a drive assembly;

at least two drive assemblies, the drive assemblies comprising:

a clutch, a first end of the clutch being connected to the drive assembly;

a clutch drive wheel connected to the second end of the clutch;

wherein different ones of the clutched driven wheels are for connection to different portions of the seat to drive movement of the different portions of the seat.

2. The seat drive arrangement of claim 1 wherein the clutch and the drive output shaft of the drive assembly are coaxially disposed.

3. The seat actuation device according to claim 1, characterized in that the active flexible connection belt is a synchronous belt.

4. The seat drive of claim 1 further comprising a first stage idler and a first stage transitional flexible link belt, the first stage idler being connected to the active flexible link belt, the active flexible link belt being connected to the clutch drive wheel, the first stage idler being connected to the first stage transitional flexible link belt, the first stage transitional flexible link belt being connected to the clutch driven wheel.

5. The seat drive of claim 4 further comprising a second stage idler pulley and a second stage transitional flexible link belt, the second stage idler pulley being connected to the first stage transitional flexible link belt, the first stage transitional flexible link belt being connected to the first stage idler pulley, the second stage idler pulley being connected to the second stage transitional flexible link belt, the second stage transitional flexible link belt being connected to the clutched driven pulley.

6. The seat drive apparatus according to claim 1, further comprising a corner connector having a corner input shaft and a corner output shaft, an axial direction of the corner input shaft being perpendicular to an axial direction of the corner output shaft, the corner input shaft being connected to the corner output shaft so that the corner input shaft can rotate the corner output shaft, one end of the corner input shaft being connected to the clutch driven wheel, one end of the corner output shaft being for connection to the seat.

7. The seat drive as defined in claim 6 wherein the corner connector comprises a first bevel gear and a second bevel gear, the first bevel gear and the second bevel gear meshing, the first bevel gear being connected to the corner input shaft and the second bevel gear being connected to the corner output shaft.

8. The seat drive of claim 1 further comprising a reduction assembly including a reduction input shaft connected to the clutch driven wheel and a reduction output shaft for connection to the seat.

9. The seat drive as set forth in claim 1, wherein both ends of the drive assembly have drive output shafts to be connected to different ones of the clutches, respectively.

10. The seat drive of claim 9 further comprising a first clutch mount and a second clutch mount, the first clutch mount and the second clutch mount being spaced apart from each other along an axial direction of the drive output shaft, the first clutch mount and the second clutch mount being connected to different ones of the clutches.

11. A seat, the seat comprising:

a mounting;

a backrest rotatably connected to the seat frame;

a leg rest rotatably connected to the mount; and

the seat drive apparatus according to any one of claims 1 to 10.

12. The seat of claim 11, wherein the clutch comprises a fore-aft clutch connected to the mount for driving the mount to move in a fore-aft direction.

13. The seat of claim 11, wherein the clutch comprises a vertical clutch connected to the mount for driving the mount to move in a vertical direction.

14. The seat of claim 11, wherein the clutch comprises a back clutch connected to the back for driving the back in rotation.

15. The seat of claim 11, wherein the clutch comprises a leg rest clutch connected to the leg rest for driving rotation of the leg rest.

16. A vehicle, characterized in that it comprises a seat according to any one of claims 11 to 15.