CN113561866A - Electric leg support for adjusting supporting length of lower part of thigh - Google Patents
Electric leg support for adjusting supporting length of lower part of thigh Download PDFInfo
- Publication number
- CN113561866A CN113561866A CN202110785943.XA CN202110785943A CN113561866A CN 113561866 A CN113561866 A CN 113561866A CN 202110785943 A CN202110785943 A CN 202110785943A CN 113561866 A CN113561866 A CN 113561866A
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- Prior art keywords
- sliding
- plate
- lead screw
- sliding plate
- driver
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- 210000002414 leg Anatomy 0.000 title claims abstract description 32
- 210000000689 upper leg Anatomy 0.000 title claims abstract description 9
- 230000003014 reinforcing effect Effects 0.000 claims description 14
- 229920001971 elastomer Polymers 0.000 claims description 10
- 238000003780 insertion Methods 0.000 claims description 9
- 230000037431 insertion Effects 0.000 claims description 9
- 239000000806 elastomer Substances 0.000 claims description 7
- 239000002390 adhesive tape Substances 0.000 claims description 4
- 210000004907 gland Anatomy 0.000 claims description 4
- 238000010079 rubber tapping Methods 0.000 claims description 4
- 210000001503 joint Anatomy 0.000 claims description 3
- 238000009434 installation Methods 0.000 description 6
- 230000002787 reinforcement Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/62—Thigh-rests
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Seats For Vehicles (AREA)
Abstract
The invention relates to an electric leg support for adjusting the supporting length of the lower part of a thigh, which comprises a fixed plate, a sliding plate and a driver, wherein the fixed plate is fixed on the upper part of the thigh; the fixed plate is fixedly connected with a seat basin of the seat, the sliding plate is arranged in parallel with the fixed plate and slides back and forth relative to the fixed plate under the action of the driver; a sliding groove, a sliding way, a driver avoiding groove and a limiting jack are processed on the fixing plate, a ball is arranged in the limiting jack, the driver is arranged on the fixing plate, and a lead screw of the driver penetrates through the tail end of the sliding groove and is inserted into the limiting jack; a sliding block is arranged on the lead screw; the electric leg support is of an independent integral structure and is simple in structure, convenient to install and good in stability.
Description
Technical Field
The invention belongs to the technical field of automobile seats, relates to an electric leg support, and particularly relates to an electric leg support which is arranged on an automobile seat and used for adjusting the supporting length of the lower part of a thigh.
Background
With the development of the automobile industry, the requirements of people on the comfort and the functionality of automobiles are higher and higher; among them, the comfort of the car seat directly concerns the riding experience of the driver and the passenger, and has become the key point of research in the industry. The main problem that current car seat faces is, the demand of different size driver and passenger travelling comfort can't be satisfied simultaneously to the seat of same specification, especially the seat basin part, to the driver and passenger of the small-size, usually with the seat basin design shorter, and this kind of seat basin can't be adapted to the driver and passenger of tall and big-size, because the big shank partial contact area of short seat basin and driver and passenger of tall and big-size is less, can't play good shank supporting role, seriously influence the travelling comfort of taking the seat.
In order to improve the comfort of the automobile seat, more and more automobile seat manufacturers design the cushion length of the seat to be adjustable according to actual needs. The existing cushion framework with adjustable length consists of a seat basin part and a leg support part; wherein, the leg rest part generally adopts electronic or manual mode to adjust length. However, the existing electric leg support is complex in structure, some electric leg support parts need to be installed on the seat framework in a mixed mode, and the existing electric leg support parts need to be installed on the seat framework separately, so that the installation is inconvenient.
Disclosure of Invention
In view of the above problems and disadvantages, it is an object of the present invention to provide a motorized leg rest for adjusting a supporting length of a lower thigh, which is a separate and integral structure, and has a simple structure, easy installation, and good stability.
In order to achieve the purpose, the invention adopts the following technical scheme:
the electric leg support for adjusting the supporting length of the lower part of the thigh comprises a fixed plate, a sliding plate and a driver; the fixed plate is fixedly connected with a seat basin of the seat, a sliding plate parallel to the fixed plate is arranged on the fixed plate, the sliding plate slides forwards and backwards relative to the fixed plate, and the sliding of the sliding plate is driven by a driver; the improvement is that a sliding chute and two parallel sliding ways are processed on the fixed plate, a driver avoiding groove is formed in the position, close to the starting end of the sliding chute, on the fixed plate, a limiting jack is processed in the position, close to the tail end of the sliding chute, on the fixed plate, the limiting jack is arranged opposite to the tail end of a driver screw rod, and a ball is mounted in the limiting jack; the two slide ways are arranged on two sides of the sliding groove;
the driver is arranged on the fixing plate, a lead screw of the driver penetrates through the sliding groove, and the tail end of the lead screw is inserted into the limiting insertion hole and is in butt joint with the ball in the limiting insertion hole; the lead screw is provided with a sliding block, and the lead screw rotates to drive the sliding block to slide back and forth in the sliding groove;
the sliding plate is provided with a sliding block mounting part, a sliding block is mounted on the sliding block mounting part, the sliding plate is driven to slide back and forth through the sliding block, an elastic body embedding hole is formed in the position, opposite to the slide way of the fixed plate, of the sliding plate, an elastic body is embedded in the elastic body embedding hole, and when the sliding plate slides back and forth relative to the fixed plate, the elastic body slides back and forth in the slide way along with the sliding plate.
Preferably, the slider and the slider mounting part are movably connected in a clamping manner.
Preferably, the fixing plate is of a honeycomb structure, the fixing plate is further provided with a clamping structure and screw mounting holes, and the side wall of the driver avoidance groove of the fixing plate is provided with motor mounting holes.
Preferably, the slide plate further includes a spare hole formed at one side of the elastomer fitting hole.
Preferably, the periphery of the sliding plate is provided with a skin rubber strip clamping groove, and the surface of the sliding plate is coated with a layer of skin through the skin rubber strip clamping groove.
Preferably, the sliding plate has a reinforcing rib disposed outside the elastomer fitting hole, and the reinforcing rib is a circular reinforcing rib.
Preferably, the elastic body comprises an embedded part and a sliding part, the embedded part is of a closed-loop structure and is embedded in the embedded hole of the elastic body through deformation, the sliding part is of an arch structure, and two ends of the sliding part are fixedly connected with the embedded part respectively.
Preferably, the driver comprises a motor, a worm connected with the motor, a helical gear meshed with the worm, a lead screw coaxially connected with the helical gear, and a shell; the shell is fixedly connected with the motor through screws, the worm and the helical gear are installed in the shell, the lead screw extends to the outer side of the shell, one side, close to the lead screw, of the shell is packaged through a gland, and the packaged shell is fixed on the fixing plate through self-tapping screws.
As a further preference of the invention, the slider comprises a screw connecting part and a slide plate connecting part, the screw connecting part is of a cylindrical structure, and the screw connecting part is provided with internal threads which are in threaded connection with the screw; the sliding plate connecting portion comprises first limiting bulges and three limiting grooves, the first limiting bulges and the three limiting bulges are arranged at three intervals, the first limiting bulges on two sides are provided with two second limiting bulges at intervals, the sliding block mounting portion of the sliding plate is of a structure matched with the first limiting bulges, the limiting grooves and the second limiting bulges of the sliding plate connecting portion, the sliding plate connecting portion and the sliding block mounting portion are in zero clearance fit of clamping connection along the circumferential direction of the sliding block, and the sliding plate connecting portion and the sliding block mounting portion are in clearance fit along the radial direction of the sliding block.
The invention has the advantages and positive effects that:
1. the electric leg support provided by the invention is an independent integral structure, and has the advantages of simple structure, convenience in installation and good stability.
2. The electric leg support provided by the invention is characterized in that the sliding plate is embedded with the elastic body, and the elastic body plays a role in supporting and suspending, so that the friction can be reduced, and the shaking amount between the sliding plate and the fixed plate is limited.
3. The sliding block and the sliding plate in the electric leg support are connected in a clamping and movable connection mode, are not fixed by screws, have certain gaps at the upper part, the lower part, the left part and the right part, and can avoid the non-coaxial and swinging caused by the size deviation.
4. The electric leg support fixing plate structure provided by the invention adopts a honeycomb structure, is light in weight and stable and reliable in structure, and the elastic body embedding hole side reinforcing ribs of the sliding plate adopt circular reinforcing ribs, so that the shrinkage deformation generated by unilateral reinforcement can be effectively reduced.
Drawings
FIG. 1 is a schematic view of the leg rest of the present invention mounted on a chair;
FIG. 2 is an isometric view of the leg rest of the present invention (in elevation);
FIG. 3 is an isometric view (rear view) of the leg rest of the present invention;
FIG. 4 is an exploded view of the leg rest of the present invention;
fig. 5 is an isometric view (in elevation) of a fixation plate of the present invention;
FIG. 6 is an isometric view (rear view) of a fixation plate of the present invention;
FIG. 7 is an isometric view (in elevation) of the slide plate of the present invention;
FIG. 8 is an isometric view (rear view) of the slide plate of the present invention;
FIG. 9 is an isometric view of the actuator of the present invention;
FIG. 10 is an exploded view of the actuator of the present invention;
FIG. 11 is a schematic representation of an elastomer of the present invention;
FIG. 12 is a schematic view of a slider of the present invention;
fig. 13 is a schematic view of the connection of the slider and the sliding plate according to the present invention.
Reference numerals: the fixing plate 1, the sliding plate 2, the driver 3, the seat pan 4, the sliding groove 101, the slideway 102, the driver avoiding groove 103, the limit jack 104, the ball 105, the clamping structure 106, the screw mounting hole 107, the motor mounting hole 108, the slider 201, the elastomer embedding hole 202, the elastomer 203, the skin rubber strip clamping groove 204, the reinforcing rib 205, the spare hole 206, the slider mounting part 207, the motor 301, the worm 302, the helical gear 303, the lead screw 304, the shell 305, the gland 306, the screw 307, the self-tapping screw 308, the embedding part 2031, the sliding part 2032, the lead screw connecting part 2011, the slide connecting part 2012, the first limit protrusion a, the limit groove b and the second limit protrusion c.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments.
In the description of the present application, it should be noted that the terms "in", "under", and the like indicate the orientation or positional relationship: the particular arrangements or components shown in the drawings, or the orientations or positional relationships conventionally used in the manufacture of the applications, are for convenience only and to simplify the description, and are not intended to indicate or imply that the referenced devices or components must be in a particular orientation, constructed and operated in a particular orientation, and are not to be construed as limiting the application. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the present application, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; they may be mechanically coupled, directly coupled, indirectly coupled through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Referring to fig. 1 to 3, the electric leg rest for adjusting the supporting length of the lower thigh provided by the present invention comprises a fixed plate 1, a sliding plate 2, and a driver 3; the fixed plate 1 is fixedly connected with a seat basin 4 of the seat, a sliding plate 2 parallel to the fixed plate 1 is arranged on the fixed plate 1, the sliding plate 2 slides forwards and backwards relative to the fixed plate 1, and the sliding of the sliding plate 2 is driven by a driver 3;
referring to fig. 4 to 6, the fixing plate 1 is of a honeycomb structure, is light, reliable and stable in structure, the fixing plate 1 is provided with a chute 101 and two parallel slideways 102, a driver avoiding groove 103 is formed in the fixing plate 1 at a position close to the starting end of the chute 101, and a motor mounting hole 108 is formed in the side wall of the driver avoiding groove 103; a limiting jack 104 is processed at a position, close to the tail end of the sliding chute, on the fixing plate 1, the limiting jack 104 is arranged opposite to the tail end of the driver screw, and a ball 105 is arranged in the limiting jack 104; the two slide ways 102 are arranged on two sides of the chute 101;
still be provided with joint structure 106 and screw mounting hole 107 on the fixed plate, install the fixed plate on the seat basin 4 of seat through joint structure 106, later the bolt passes the screw mounting hole 107 of fixed plate and links firmly with the seat basin, this kind of mounting form is convenient, firm, can improve the assembly efficiency that electronic leg held in the palm.
Referring to fig. 4, 7 and 8, a slider mounting portion 207 is processed on the sliding plate 2, a slider 201 is mounted on the slider mounting portion 207, the slider 201 is in threaded connection with a lead screw of a driver, the sliding plate 2 is driven to slide back and forth by the slider 201, an elastic body embedding hole 202 is processed on the sliding plate 2 at a position opposite to the slide way 102 of the fixed plate, an elastic body 203 is embedded in the elastic body embedding hole 202, when the sliding plate 2 slides back and forth relative to the fixed plate 1, the elastic body 203 slides back and forth in the slide way 202 along with the sliding plate, and the elastic body 20 is arranged to play a role of supporting and suspending, so that friction between the fixed plate 1 and the sliding plate 2 can be reduced, and meanwhile, the shaking amount between the fixed plate 1 and the sliding plate 2 is limited;
a skin adhesive tape clamping groove 204 is formed in the periphery of the sliding plate 2, and a layer of skin is coated on the surface of the sliding plate through the skin adhesive tape clamping groove 204;
the outer side of the elastomer embedding hole 202 of the sliding plate 2 is further provided with a reinforcing rib 205, the reinforcing rib can adopt a reinforcing rib with any shape, but a circular reinforcing rib is preferably adopted, because the circular reinforcing rib not only can stabilize the structure of the sliding plate 2, but also can effectively reduce the shrinkage deformation caused by unilateral reinforcement.
In addition, a spare hole 206 is further processed on one side of the elastic body embedding hole 202 on the sliding plate 2, and the middle of the spare hole 206 is provided with more connecting ribs compared with the elastic body embedding hole 202; therefore, when it is necessary to install more elastic bodies 203, the spare holes are opened (the connection ribs are removed) to serve as the elastic body fitting holes 202, and then the elastic bodies 203 are installed inside.
Referring to fig. 4, 9 and 10, the driver 3 is mounted on the fixing plate 1, and the driver 3 includes a motor 301, a worm 302 connected to the motor, a bevel gear 303 engaged with the worm, a lead screw 304 coaxially connected to the bevel gear, and a housing 305; the shell 305 is fixedly connected with the motor 301 through a screw 307, the worm 302 and the bevel gear 303 are installed in the shell 305, the lead screw 304 extends to the outer side of the shell 305, one side of the shell 305, which is close to the lead screw 304, is encapsulated through a gland 306, the encapsulated shell 305 is fixed on the fixing plate 1 through a self-tapping screw 308, the lead screw 304 of the driver penetrates through the sliding groove 101, the tail end of the lead screw is inserted into the limiting insertion hole 104 and is in butt joint with the ball 105 in the limiting insertion hole, the ball 105 has the advantage of small friction force, and the arrangement of the ball 105 can limit the axial force generated by the lead screw when the sliding block slides; the lead screw 304 is provided with a slide block 201, and the lead screw 304 rotates to drive the slide block 201 to slide back and forth in the chute 101.
Referring to fig. 11, the elastic body includes an embedded portion 2031 and a sliding portion 2032, the embedded portion 2031 is a closed-loop structure and is embedded in the elastic body embedding hole 202 through deformation, the sliding portion 2032 is an arch structure, and two ends of the sliding portion are fixedly connected to the embedded portion respectively.
Referring to fig. 12 and 13, the slider 201 is movably connected with the sliding plate in a clamping manner, the slider 201 includes a lead screw connection portion 2011 and a sliding plate connection portion 2012, the lead screw connection portion 2011 is of a cylindrical structure, and the lead screw connection portion 2011 is provided with an internal thread which is in threaded connection with the lead screw 304; sliding plate connecting portion 2012 includes that the first spacing arch a that three interval set up, three spacing arch between form two spacing recess b, still the interval is provided with two spacing arch c of second on the first spacing arch a of both sides, the slider installation department 207 of sliding plate be with the first spacing arch of sliding plate connecting portion 2012, spacing recess, the structure of the spacing protruding adaptation of second, sliding plate connecting portion 2012 and slider installation department 207 are zero clearance fit of joint along the circumference of slider 201, sliding plate connecting portion 2012 and slider installation department 207 are clearance fit along the radial of slider 201, all have certain clearance about promptly, the advantage of structure just can avoid the disalignment that dimensional deviation produced and rock about like this.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. The electric leg support for adjusting the supporting length of the lower part of the thigh comprises a fixed plate, a sliding plate and a driver; the fixed plate is fixedly connected with a seat basin of the seat, a sliding plate parallel to the fixed plate is arranged on the fixed plate, the sliding plate slides forwards and backwards relative to the fixed plate, and the sliding of the sliding plate is driven by a driver; the device is characterized in that a sliding chute and two parallel sliding ways are processed on the fixing plate, a driver avoiding groove is formed in the position, close to the starting end of the sliding chute, on the fixing plate, a limiting insertion hole is processed in the position, close to the tail end of the sliding chute, on the fixing plate, the limiting insertion hole is arranged opposite to the tail end of a driver screw rod, and a ball is mounted in the limiting insertion hole; the two slide ways are arranged on two sides of the sliding groove;
the driver is arranged on the fixing plate, a lead screw of the driver penetrates through the sliding groove, and the tail end of the lead screw is inserted into the limiting insertion hole and is in butt joint with the ball in the limiting insertion hole; the lead screw is provided with a sliding block, and the lead screw rotates to drive the sliding block to slide back and forth in the sliding groove;
the sliding plate is provided with a sliding block mounting part, a sliding block is mounted on the sliding block mounting part, the sliding plate is driven to slide back and forth through the sliding block, an elastic body embedding hole is formed in the position, opposite to the slide way of the fixed plate, of the sliding plate, an elastic body is embedded in the elastic body embedding hole, and when the sliding plate slides back and forth relative to the fixed plate, the elastic body slides back and forth in the slide way along with the sliding plate.
2. The electric leg support according to claim 1, wherein the connection of the slider and the slider mounting portion is a snap-fit movable connection.
3. The electric leg rest according to claim 1, wherein the fixing plate is of a honeycomb structure, a clamping structure and screw mounting holes are further formed in the fixing plate, and motor mounting holes are formed in the side wall of the driver avoiding groove of the fixing plate.
4. The powered leg rest of claim 1, wherein the slide plate is further formed with a spare hole at one side of the elastomer-embedded hole.
5. The electric leg rest according to claim 1, wherein a skin adhesive tape clamping groove is formed on the periphery of the sliding plate, and a skin is coated on the surface of the sliding plate through the skin adhesive tape clamping groove.
6. The electric leg rest according to claim 1, wherein a reinforcing rib is provided outside the elastomer embedding hole of the sliding plate, and the reinforcing rib is a circular reinforcing rib.
7. The electric leg rest according to claim 1, wherein the elastic body comprises an embedded portion and a sliding portion, the embedded portion is of a closed loop structure and is embedded in the embedded hole of the elastic body through deformation, the sliding portion is of an arch structure, and two ends of the sliding portion are fixedly connected with the embedded portion respectively.
8. The motorized leg rest of claim 1, wherein the actuator comprises a motor, a worm connected to the motor, a helical gear engaged with the worm, a lead screw coaxially connected to the helical gear, a housing; the shell is fixedly connected with the motor through screws, the worm and the helical gear are installed in the shell, the lead screw extends to the outer side of the shell, one side, close to the lead screw, of the shell is packaged through a gland, and the packaged shell is fixed on the fixing plate through self-tapping screws.
9. The electric leg rest according to claim 2, wherein the sliding block comprises a lead screw connecting part and a sliding plate connecting part, the lead screw connecting part is of a cylindrical structure, and the lead screw connecting part is provided with internal threads which are in threaded connection with the lead screw; the sliding plate connecting portion comprises first limiting bulges and three limiting grooves, the first limiting bulges and the three limiting bulges are arranged at three intervals, the first limiting bulges on two sides are provided with two second limiting bulges at intervals, the sliding block mounting portion of the sliding plate is of a structure matched with the first limiting bulges, the limiting grooves and the second limiting bulges of the sliding plate connecting portion, the sliding plate connecting portion and the sliding block mounting portion are in zero clearance fit of clamping connection along the circumferential direction of the sliding block, and the sliding plate connecting portion and the sliding block mounting portion are in clearance fit along the radial direction of the sliding block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110785943.XA CN113561866B (en) | 2021-07-12 | 2021-07-12 | Electric leg support for adjusting thigh lower support length |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110785943.XA CN113561866B (en) | 2021-07-12 | 2021-07-12 | Electric leg support for adjusting thigh lower support length |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113561866A true CN113561866A (en) | 2021-10-29 |
| CN113561866B CN113561866B (en) | 2024-10-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110785943.XA Active CN113561866B (en) | 2021-07-12 | 2021-07-12 | Electric leg support for adjusting thigh lower support length |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113561866B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007232023A (en) * | 2006-02-28 | 2007-09-13 | Ntn Corp | Motor-driven actuator |
| CN103723061A (en) * | 2012-10-16 | 2014-04-16 | 洪正明 | Actuator system for adjustment of lumber support |
| CN209479505U (en) * | 2018-11-26 | 2019-10-11 | 广汽零部件有限公司 | A kind of automotive seat leg support of hand step-less adjustment |
| CN212184346U (en) * | 2020-05-08 | 2020-12-22 | 云南壹初恋景园林绿化工程有限公司 | Foam group pot for flower cultivation |
| CN212579695U (en) * | 2020-06-11 | 2021-02-23 | 重庆宏立至信科技发展集团股份有限公司 | Electric leg support extension mechanism of automobile seat |
| CN215904367U (en) * | 2021-07-12 | 2022-02-25 | 新发展（长春）汽车自控系统有限公司 | Electric leg support for adjusting supporting length of lower part of thigh |
-
2021
- 2021-07-12 CN CN202110785943.XA patent/CN113561866B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007232023A (en) * | 2006-02-28 | 2007-09-13 | Ntn Corp | Motor-driven actuator |
| CN103723061A (en) * | 2012-10-16 | 2014-04-16 | 洪正明 | Actuator system for adjustment of lumber support |
| CN209479505U (en) * | 2018-11-26 | 2019-10-11 | 广汽零部件有限公司 | A kind of automotive seat leg support of hand step-less adjustment |
| CN212184346U (en) * | 2020-05-08 | 2020-12-22 | 云南壹初恋景园林绿化工程有限公司 | Foam group pot for flower cultivation |
| CN212579695U (en) * | 2020-06-11 | 2021-02-23 | 重庆宏立至信科技发展集团股份有限公司 | Electric leg support extension mechanism of automobile seat |
| CN215904367U (en) * | 2021-07-12 | 2022-02-25 | 新发展（长春）汽车自控系统有限公司 | Electric leg support for adjusting supporting length of lower part of thigh |
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| Publication number | Publication date |
|---|---|
| CN113561866B (en) | 2024-10-01 |
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