CN113246825B - Automobile seat with comfort adjusting function - Google Patents
Automobile seat with comfort adjusting function Download PDFInfo
- Publication number
- CN113246825B CN113246825B CN202110735379.0A CN202110735379A CN113246825B CN 113246825 B CN113246825 B CN 113246825B CN 202110735379 A CN202110735379 A CN 202110735379A CN 113246825 B CN113246825 B CN 113246825B
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- CN
- China
- Prior art keywords
- seat
- headrest
- fixer
- rigidly connected
- guide rail
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- 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
- B60N2/80—Head-rests
- B60N2/806—Head-rests movable or adjustable
- B60N2/865—Head-rests movable or adjustable providing a fore-and-aft movement with respect to the occupant's head
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- 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
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/22—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable
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- 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
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/22—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable
- B60N2/2245—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable provided with a lock mechanism on the upper part of the back-rest
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- 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
- B60N2/90—Details or parts not otherwise provided for
-
- 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
- B60N2/90—Details or parts not otherwise provided for
- B60N2/919—Positioning and locking mechanisms
- B60N2002/952—Positioning and locking mechanisms characterised by details of the locking system
Abstract
The invention provides an automobile seat with a comfort adjusting function, which is applied to the technical field of automobile parts, wherein the lower part of a seat back plate (1) of the automobile seat with the comfort adjusting function is connected with a lock device (2), the upper part of the seat back plate (1) is connected with a guide rail bearing (4) of a headrest support rod (3), the headrest support rod (4) is rigidly connected with a seat headrest (5), the headrest support rod (3) is fixed on a headrest fixer (6), the headrest fixer (6) is connected with a seat framework (7) through a fixer bearing (8), a lock device guide rail (9) is rigidly connected with the seat framework (7), the upper end of a tension spring (10) is connected with the lock device (2), and the lower end of the tension spring (10) is connected with the seat framework (7).
Description
Technical Field
The invention belongs to the technical field of automobile parts, and particularly relates to an automobile seat with a comfort adjusting function.
Background
In recent years, as the requirement of customers on the riding comfort of automobiles is higher and higher, so that the development of the riding comfort of the automobiles is emphasized by automobile manufacturers, most of the automobiles in the existing market still use the traditional mode for the development of the riding comfort, and the requirements of the customers cannot be well met.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: to prior art's not enough, provide a simple structure, can convenient and fast realize around the seat headrest adjust with back regulatory function before the backrest, effectively avoid the shortcoming that traditional seat travelling comfort is not enough for customer is more comfortable when driving the vehicle, and is indefatigable, and has with low costs, arranges that the space is little, the advantage that the durability is good, promotes the automobile seat with travelling comfort regulatory function that the vehicle took the travelling comfort comprehensively.
To solve the technical problems, the invention adopts the technical scheme that:
the invention relates to an automobile seat with a comfort adjusting function, wherein the lower part of a seat back plate is rigidly connected with a lock device, the upper part of the seat back plate is connected with a guide rail bearing of a headrest support rod, the headrest support rod is rigidly connected with a seat headrest, the headrest support rod is simultaneously fixed on a headrest fixer, the headrest fixer is connected with a seat framework through a fixer bearing, a lock device guide rail is rigidly connected with the seat framework, the upper end of a tension spring is rigidly connected with the lock device, and the lower end of the tension spring is connected with the seat framework.
When the lock device is opened by external force, the seat backup plate is set to be a structure capable of sliding along the lock device guide rail, and the headrest support rod is set to be capable of rotating around the seat backup plate and moving through the guide rail bearing.
The lower portion of one side of the seat back plate is rigidly connected with a lock device, the upper portion of one side of the seat back plate is connected with a guide rail bearing of a headrest supporting rod, the headrest supporting rod is rigidly connected with a headrest, the headrest supporting rod is simultaneously fixed on a headrest fixer, the headrest fixer is connected with a seat framework through a fixer bearing, a lock device guide rail is rigidly connected with the seat framework, the upper end of a tension spring is rigidly connected with the lock device, and the lower end of the tension spring is connected with the seat framework.
The lower part of the other side of the seat back plate is rigidly connected with another lock device, the upper part of the other side of the seat back plate is connected with a guide rail bearing of another headrest supporting rod, the headrest supporting rod is rigidly connected with a headrest, the headrest supporting rod is fixed on another headrest fixer, the headrest fixer is connected with a seat framework through another fixer bearing, another lock device guide rail is rigidly connected with the seat framework, the upper end of another tension spring is rigidly connected with one lock device, and the lower end of the tension spring is connected with the seat framework.
When customer's back and seat backup plate contact and customer's back applys when the seat backup plate to the power of car rear, the structure that the lock ware set up to can open, when the lock ware was opened, the seat backup plate set up to upwards, the backward movement of lock ware guide rail to promote the headrest bracing piece round headrest fixer rotary motion, realize that the seat headrest removes and realize the structure of adjusting to driver's direction.
When customer's head and seat headrest contact and customer's head applys the power to the car rear when the seat headrest, the structure that the lock ware set up to can open this moment, when the lock ware was opened, the seat headrest set up to can the rearward movement, the headrest bracing piece round the headrest fixer rotary motion to promote the seat backup plate along lock ware guide rail downward, move forward, realize the seat backup plate to the removal of driver's direction and realize the structure of adjusting.
The fixer bearing be connected with seat skeleton 7 rigid, the headrest fixer sets up to rotating around the fixer bearing to drive the rotatory structure of headrest bracing piece.
The rigidity of the tension spring is set to meet man-machine calibration and the structure capable of pulling the lock device to return to the initial position is achieved, and the initial position of the lock device is defaulted to be in a state that the seat back plate is located at the most front position.
By adopting the technical scheme of the invention, the following beneficial effects can be obtained:
the automobile seat with the comfort adjusting function of the invention maintains the adjusting function of the seat in the prior art, and adds brand new functions through the improvement of the structure, namely: the functions of front-back adjustment of the seat headrest and front-back adjustment of the seat backrest are added on the basis of the original functions. When customer drives the vehicle, customer's back and seat backup plate contact, when customer's back leans on the seat backup plate with suitable backward, lock ware atress can be opened this moment, and the seat backup plate can be followed lock ware guide rail and upwards, backward movement this moment, promotes the headrest bracing piece around headrest fixer rotary motion, realizes the headrest to driver's direction regulatory function. When customer's head leaned on the seat headrest backward with appropriate power, lock ware atress can be opened this moment, and the seat headrest can the rearward movement, and seat headrest bracing piece can be around headrest fixer rotary motion to promote the seat backup plate along lock ware guide rail downward, move forward, realize the seat backup plate to driver direction regulatory function. The automobile seat with the comfort adjusting function is simple in structure, can conveniently and quickly realize the functions of adjusting the headrest and the backrest of the seat, effectively overcomes the defect of insufficient comfort of the traditional seat, enables customers to be more comfortable and not easy to fatigue when driving the automobile, has the advantages of low cost, small arrangement space and good durability, and comprehensively improves the riding comfort of the automobile.
Drawings
The contents of the specification, as well as the references used in the drawings, will now be briefly described as follows:
FIG. 1 is a schematic view of a vehicle seat having a comfort adjustment feature according to the present invention;
FIG. 2 is a schematic front view of a vehicle seat with comfort adjustment according to the present invention;
in the drawings, the reference numbers are respectively: 1. a seat back plate; 2. a locking device; 3. a headrest support bar; 4. a guide rail bearing; 5. a seat headrest; 6. a headrest holder; 7. a seat frame; 8. a retainer bearing; 9. a locker guide; 10. a tension spring.
Detailed Description
The following detailed description of the embodiments of the present invention, such as the shapes and structures of the components, the mutual positions and connection relations among the components, the functions and operation principles of the components, will be made by referring to the accompanying drawings and the description of the embodiments:
as shown in fig. 1 and 2, the invention relates to an automobile seat with a comfort regulation function, wherein the lower part of a seat back plate 1 is rigidly connected with a lock device 2, the upper part of the seat back plate 1 is connected with a guide rail bearing 4 of a headrest support rod 3, the headrest support rod 4 is rigidly connected with a seat headrest 5, the headrest support rod 3 is simultaneously fixed on a headrest fixer 6, the headrest fixer 6 is connected with a seat framework 7 through a fixer bearing 8, a lock device guide rail 9 is rigidly connected with the seat framework 7, the upper end of a tension spring 10 is rigidly connected with the lock device 2, and the lower end of the tension spring 10 is connected with the seat framework 7. Above-mentioned structure, to prior art's not enough, when keeping the regulatory function of seat among the prior art, through the improvement of structure, increases brand-new function, promptly: the functions of front-back adjustment of the seat headrest and front-back adjustment of the seat backrest are added on the basis of the original functions. When customer drives the vehicle, customer's back and seat backup plate contact, when customer's back leans on the seat backup plate with suitable backward, lock ware atress can be opened this moment, and the seat backup plate can be followed lock ware guide rail and upwards, backward movement this moment to promote the headrest bracing piece around headrest fixer rotary motion, realize the headrest to driver's direction regulatory function. When customer's head leaned on the seat headrest with appropriate power backward, the lock ware atress can be opened this moment, and the seat headrest can the rearward movement, and the seat headrest bracing piece can be around headrest fixer rotary motion to promote seat backup plate along lock ware guide rail downstream, move forward, realize the seat backup plate to driver's direction regulatory function. The automobile seat with the comfort adjusting function is simple in structure, can conveniently and quickly realize the functions of adjusting the headrest and the backrest of the seat, avoids the defect of insufficient comfort of the traditional seat, enables customers to be more comfortable and not easy to fatigue when driving the automobile, has the advantages of low cost, small arrangement space and good durability, and comprehensively improves the riding comfort of the automobile.
When the lock device 2 is opened by external force, the seat back plate 1 is set to be in a structure capable of sliding along the lock device guide rail 9, and the headrest support rod 3 is set to be capable of rotating and moving around the seat back plate 1 through the guide rail bearing 4. Above-mentioned structure through the setting of lock ware, when the lock ware atress, can open, and external force disappears the back, under tension spring's effect, the lock ware realizes reseing. Therefore, the position of the seat headrest or the seat backup plate can be conveniently and quickly adjusted only by applying force, so that the comfort of taking the vehicle is effectively improved, and the vehicle performance is improved.
The lower part of one side of the seat back plate 1 is rigidly connected with a lock device 2, the upper part of one side of the seat back plate 1 is connected with a guide rail bearing 4 of a headrest support rod 3, the headrest support rod 3 is rigidly connected with a headrest 5, the headrest support rod 3 is simultaneously fixed on a headrest fixer 6, the headrest fixer 6 is connected with a seat framework 7 through a fixer bearing 8, a lock device guide rail 9 is rigidly connected with the seat framework 7, the upper end of a tension spring 10 is rigidly connected with the lock device 2, and the lower end of the tension spring 10 is connected with the seat framework 7. The lower part of the other side of the seat back plate 1 is rigidly connected with another lock device 2, the upper part of the other side of the seat back plate 1 is connected with a guide bearing 4 of another headrest support rod 3, the headrest support rod 3 is rigidly connected with a headrest 5, the headrest support rod 3 is fixed on another headrest fixer 6, the headrest fixer 6 is connected with a seat framework 7 through another fixer bearing 8, another lock device guide rail 9 is rigidly connected with the seat framework 7, the upper end of another tension spring 10 is rigidly connected with one lock device 2, and the lower end of the tension spring 10 is connected with the seat framework 7. Above-mentioned structure, the part symmetrical arrangement of seat both sides to play connection and supporting role to parts such as seat backup plate from both sides, make no matter the application of force on seat headrest or application of force on the seat back, can both take place the position change in a flexible way, and can not change and the opposite side is motionless on one side, satisfies the regulation requirement.
When customer's back and seat backup plate 1 contact and customer's back applys the power to the car rear when seat backup plate 1, lock ware 2 sets up to the structure that can open, and when lock ware 2 was opened, seat backup plate 1 set up to can follow lock ware guide rail 9 upwards, backward movement to promote headrest bracing piece 3 round 6 rotary motion of headrest fixer, realize that seat headrest 5 removes and realize the structure of adjusting to driver's direction. When customer's head and seat headrest 5 contact and customer's head applys the power to the car rear when seat headrest 5, lock ware 2 sets up to the structure that can open this moment, and when lock ware 2 was opened, seat headrest 5 set up to can the rearward movement, and headrest bracing piece 3 is round headrest fixer 6 rotary motion to promote seat backup plate 1 along lock ware guide rail 9 downward, forward movement, realize that seat backup plate 1 removes and realize the structure of adjusting to driver's direction. Above-mentioned structure improves the connection structure of seat, to the regulation requirement of seat backup plate or seat headrest, through at seat headrest or seat backup plate application of force, just convenient nimble realization is adjusted, and after external force disappeared, the seat can resume the initial position before adjusting again.
The fixer bearing 8 is rigidly connected with the seat framework 7, and the headrest fixer 6 is arranged to rotate around the fixer bearing 8 so as to drive the headrest support rod 3 to rotate.
The rigidity of the tension spring 10 is set to meet man-machine calibration and has a structure capable of pulling the lock 2 to return to the initial position, and the initial position of the lock 2 is defaulted to be the state that the seat back plate 1 is located at the foremost position.
The automobile seat with the comfort adjusting function of the invention maintains the adjusting function of the seat in the prior art, and adds a brand new function through the improvement of the structure, namely: the functions of front-back adjustment of the seat headrest and front-back adjustment of the seat backrest are added on the basis of the original functions. When customer drives the vehicle, customer's back and seat backup plate contact, when customer's back leans on the seat backup plate with suitable backward, lock ware atress can be opened this moment, and the seat backup plate can be followed lock ware guide rail and upwards, backward movement this moment, promotes the headrest bracing piece around headrest fixer rotary motion, realizes the headrest to driver's direction regulatory function. When customer's head leaned on the seat headrest with appropriate power backward, the lock ware atress can be opened this moment, and the seat headrest can the rearward movement, and the seat headrest bracing piece can be around headrest fixer rotary motion to promote seat backup plate along lock ware guide rail downstream, move forward, realize the seat backup plate to driver's direction regulatory function. The automobile seat with the comfort adjusting function is simple in structure, can conveniently and quickly realize the functions of adjusting the front and back of the seat headrest and adjusting the front and back of the seat backrest, effectively overcomes the defect of insufficient comfort of the traditional seat, enables customers to be more comfortable and not easy to fatigue when driving the automobile, has the advantages of low cost, small arrangement space and good durability, and comprehensively improves the riding comfort of the automobile.
The present invention has been described in connection with the accompanying drawings, and it is to be understood that the invention is not limited to the specific embodiments disclosed, but is intended to cover various modifications, changes and equivalents of the embodiments of the invention, and its application to other applications without departing from the spirit and scope of the invention.
Claims (6)
1. The utility model provides a car seat with travelling comfort regulatory function which characterized in that: the lower part of a seat back plate (1) is rigidly connected with a lock device (2), the upper part of the seat back plate (1) is connected with a guide rail bearing (4) of a headrest support rod (3), the headrest support rod (3) is rigidly connected with a seat headrest (5), the headrest support rod (3) is simultaneously fixed on a headrest fixer (6), the headrest fixer (6) is connected with a seat framework (7) through a fixer bearing (8), a lock device guide rail (9) is rigidly connected with the seat framework (7), the upper end of a tension spring (10) is rigidly connected with the lock device (2), and the lower end of the tension spring (10) is connected with the seat framework (7);
when the lock (2) is opened by external force, the seat back plate (1) is arranged to be capable of sliding along the lock guide rail (9), and the headrest support rod (3) is arranged to be capable of rotating around the seat back plate (1) and moving through the guide rail bearing (4);
the lower part of one side of the seat back plate (1) is rigidly connected with a lock device (2), the upper part of one side of the seat back plate (1) is connected with a guide rail bearing (4) of a headrest support rod (3), and the headrest support rod (3) is rigidly connected with a headrest (5);
the headrest supporting rod (3) is simultaneously fixed on a headrest fixer (6), the headrest fixer (6) is connected with a seat framework (7) through a fixer bearing (8), a lock device guide rail (9) is rigidly connected with the seat framework (7), the upper end of a tension spring (10) is rigidly connected with a lock device (2), and the lower end of the tension spring (10) is connected with the seat framework (7);
when customer's head and seat headrest (5) contact and customer's head applys to car rear's power when seat headrest (5), lock ware (2) set up to the structure that can open this moment, when lock ware (2) are opened, seat headrest (5) set up to can the rearward movement, headrest bracing piece (3) are round headrest fixer (6) rotary motion to promote seat backup plate (1) along lock ware guide rail (9) downstream, move forward, realize that seat backup plate (1) move and realize the structure of regulation to driver's direction.
2. The vehicle seat with a comfort adjustment function according to claim 1, wherein: the lower part of the other side of the seat back plate (1) is rigidly connected with another lock device (2), the upper part of the other side of the seat back plate (1) is connected with a guide rail bearing (4) of another headrest supporting rod (3), and the headrest supporting rod (3) is rigidly connected with a headrest (5).
3. The vehicle seat with a comfort adjustment function according to claim 2, wherein: the headrest supporting rod (3) is fixed on another headrest fixer (6), the headrest fixer (6) is connected with the seat framework (7) through another fixer bearing (8), another lock device guide rail (9) is rigidly connected with the seat framework (7), the upper end of another tension spring (10) is rigidly connected with one lock device (2), and the lower end of the tension spring (10) is connected with the seat framework (7).
4. The vehicle seat with a comfort adjustment function according to claim 1 or 2, characterized in that: when customer's back and seat backup plate (1) contact and customer's back applys the power to the car rear when seat backup plate (1), lock ware (2) set up to the structure that can open, when lock ware (2) are opened, seat backup plate (1) set up to can follow lock ware guide rail (9) upwards, backward movement to promote headrest bracing piece (3) round headrest fixer (6) rotary motion, realize seat headrest (5) to the removal of driver's direction and realize the structure of adjusting.
5. The vehicle seat with a comfort adjustment function according to claim 1 or 2, characterized in that: the headrest support is characterized in that the fixer bearing (8) is rigidly connected with the seat framework (7), and the headrest fixer (6) is arranged to rotate around the fixer bearing (8) so as to drive the headrest support rod (3) to rotate.
6. The vehicle seat with a comfort adjustment function according to claim 1 or 2, characterized in that: the rigidity of the tension spring (10) is set to meet man-machine calibration and has a structure capable of pulling the lock device (2) to return to the initial position, and the initial position of the lock device (2) is defaulted to be the state that the seat back plate (1) is located at the foremost position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110735379.0A CN113246825B (en) | 2021-06-30 | 2021-06-30 | Automobile seat with comfort adjusting function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110735379.0A CN113246825B (en) | 2021-06-30 | 2021-06-30 | Automobile seat with comfort adjusting function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113246825A CN113246825A (en) | 2021-08-13 |
| CN113246825B true CN113246825B (en) | 2022-11-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110735379.0A Active CN113246825B (en) | 2021-06-30 | 2021-06-30 | Automobile seat with comfort adjusting function |
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| Country | Link |
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| CN (1) | CN113246825B (en) |
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| DE10208620C1 (en) * | 2002-02-27 | 2003-07-24 | Itw Automotive Prod Gmbh & Co | Headrest for automobile passenger seat has 2 adjustable components deployed for cushioning head and neck in rear impact situation |
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| CN104553914A (en) * | 2014-12-24 | 2015-04-29 | 郑州日产汽车有限公司 | Car collision active safe headrest device |
| CN109941172A (en) * | 2019-04-10 | 2019-06-28 | 吉利汽车研究院（宁波）有限公司 | Automotive seat and vehicle with headrest adjustable mechanism |
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| JP2904946B2 (en) * | 1991-03-22 | 1999-06-14 | マツダ株式会社 | Automotive airbag equipment |
| JP3750422B2 (en) * | 1999-06-18 | 2006-03-01 | 日産自動車株式会社 | Vehicle seat |
| JP4151984B2 (en) * | 2006-07-13 | 2008-09-17 | 株式会社タチエス | Seat back structure for vehicle seat |
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| CN204623210U (en) * | 2015-01-29 | 2015-09-09 | 昆山恒诺汽车部件有限公司 | A kind of automobile children safety chair |
| DE102015115035A1 (en) * | 2015-09-08 | 2017-03-09 | Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Bamberg | Locking system for a seat assembly of a motor vehicle |
| KR101694910B1 (en) * | 2015-12-23 | 2017-01-10 | 주식회사 우보테크 | Vehicle headrest sliding device |
| CN112659985B (en) * | 2020-12-29 | 2022-12-23 | 宜宾凯翼汽车有限公司 | Car seat crossbeam structure |
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- 2021-06-30 CN CN202110735379.0A patent/CN113246825B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000108748A (en) * | 1998-09-28 | 2000-04-18 | Girsberger Holding Ag | Seat for vehicle |
| DE10208620C1 (en) * | 2002-02-27 | 2003-07-24 | Itw Automotive Prod Gmbh & Co | Headrest for automobile passenger seat has 2 adjustable components deployed for cushioning head and neck in rear impact situation |
| CN203172472U (en) * | 2012-11-17 | 2013-09-04 | 柳州东风李尔方盛汽车座椅有限公司 | Seat active headrest |
| CN104553914A (en) * | 2014-12-24 | 2015-04-29 | 郑州日产汽车有限公司 | Car collision active safe headrest device |
| CN109941172A (en) * | 2019-04-10 | 2019-06-28 | 吉利汽车研究院（宁波）有限公司 | Automotive seat and vehicle with headrest adjustable mechanism |
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|---|---|
| CN113246825A (en) | 2021-08-13 |
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