CN109435797B - Multi-connecting-rod folding mechanism and automobile seat formed by same - Google Patents
Multi-connecting-rod folding mechanism and automobile seat formed by same Download PDFInfo
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- CN109435797B CN109435797B CN201811217118.4A CN201811217118A CN109435797B CN 109435797 B CN109435797 B CN 109435797B CN 201811217118 A CN201811217118 A CN 201811217118A CN 109435797 B CN109435797 B CN 109435797B
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- connecting rod
- link
- folding mechanism
- support
- seat
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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
- B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
- B60N2/30—Non-dismountable or dismountable seats storable in a non-use position, e.g. foldable spare seats
- B60N2/3002—Non-dismountable or dismountable seats storable in a non-use position, e.g. foldable spare seats back-rest movements
- B60N2/3004—Non-dismountable or dismountable seats storable in a non-use position, e.g. foldable spare seats back-rest movements by rotation only
- B60N2/3009—Non-dismountable or dismountable seats storable in a non-use position, e.g. foldable spare seats back-rest movements by rotation only about transversal axis
- B60N2/3011—Non-dismountable or dismountable seats storable in a non-use position, e.g. foldable spare seats back-rest movements by rotation only about transversal axis the back-rest being hinged on the cushion, e.g. "portefeuille movement"
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Seats For Vehicles (AREA)
Abstract
The invention relates to a multi-connecting-rod folding mechanism which comprises a base structure, a first connecting rod, a second connecting rod, a telescopic connecting rod and a third connecting rod, wherein two ends of the first connecting rod are respectively hinged with the base structure and the second connecting rod, the telescopic connecting rod is provided with a linear motion pair, two ends of the telescopic connecting rod are respectively hinged with the base structure and the second connecting rod, and two ends of the third connecting rod are respectively hinged with the telescopic connecting rod and the base structure. The invention also provides an automobile seat which comprises a seat cushion and a backrest which are hinged, and the multi-link folding mechanism is arranged on the side surface of the seat cushion. The multi-connecting-rod folding mechanism provided by the invention adjusts the length by the telescopic connecting rod with the linear motion pair, and can enable the second connecting rod to move backwards and downwards in a large stroke by changing the included angle between the first connecting rod and the second connecting rod, thereby solving the problem that the existing four-connecting-rod mechanism is only limited to small stroke adjustment. In particular, the vehicle seat of the present invention can maintain the backrest in a horizontal state in a folded state, increasing the function of a luggage compartment loading space.
Description
Technical Field
The present invention relates to a vehicle seat, and more particularly to a multi-link folding mechanism and a vehicle seat constructed thereby.
Background
The rear row position of the existing automobile is generally provided with a folding seat, so that the automobile can provide a sitting function for passengers in an unfolded state, and can also have a function of increasing the loading space of a luggage compartment in a folded state.
The prior folding seat is generally a four-bar linkage, as shown in fig. 10, and includes a first bar 11 ', a second bar 12', a third bar 13 'and a fourth bar 14', wherein the first bar 11 'is hinged to the second bar 12', the second bar 12 'is hinged to the third bar 13', the third bar 13 'is hinged to the fourth bar 14', and the fourth bar 14 'is hinged to the first bar 11'. The angle β is a driving angle, and the angle β is changed from 95 degrees in the left drawing to 15 degrees in the right drawing. Obviously, the folding of the four-bar linkage is limited by the length of each link 11 ', 12', 13 ', 14', and large stroke adjustment up and down and back and forth cannot be realized. In addition, in the folded state, the second link 12' cannot be kept in a horizontal state, which affects the loading of the luggage.
Disclosure of Invention
In order to solve the problem that the prior art can only adjust with small stroke, the invention aims to provide a multi-link folding mechanism and a car seat formed by the same.
The invention relates to a multi-connecting-rod folding mechanism which comprises a base structure, a first connecting rod, a second connecting rod, a telescopic connecting rod and a third connecting rod, wherein two ends of the first connecting rod are respectively hinged with the base structure and the second connecting rod, the telescopic connecting rod is provided with a linear motion pair, two ends of the telescopic connecting rod are respectively hinged with the base structure and the second connecting rod, and two ends of the third connecting rod are respectively hinged with the telescopic connecting rod and the base structure.
The telescopic connecting rod comprises a first component hinged to the second connecting rod, a second component hinged to the base structure, and a linear sliding rail assembly located between the first component and the second component.
The linear slide rail assembly comprises a guide rail and a slide block which can slide along the guide rail, wherein a first component is fixedly connected with the slide block, and a second component is fixedly connected with the guide rail to form a linear motion pair.
The multi-link folding mechanism further includes a lock-unlocking mechanism for locking and unlocking the multi-link folding mechanism in the unfolded state or the folded state.
The locking and unlocking mechanism comprises an executing and unlocking mechanism, a pull cable, a locking bolt and a pressure spring, wherein the executing and unlocking mechanism is fixedly arranged on the second connecting rod, the locking bolt penetrates through the pressure spring and is movably arranged on the second connecting rod through a mounting seat, and the pull cable is respectively connected with the executing and unlocking mechanism and the locking bolt.
The first connecting rod is provided with a shaft sleeve which is hinged to the second connecting rod and extends out in the lateral direction, a first bolt hole and a second bolt hole which are communicated are formed in the circumferential wall of the shaft sleeve, the locking bolt is inserted into the first bolt hole under the action of the pressure spring and matched with the first bolt hole to lock the multi-connecting-rod folding mechanism in the unfolding state, and the locking bolt is inserted into the second bolt hole under the action of the pressure spring and matched with the second bolt hole to lock the multi-connecting-rod folding mechanism in the folding state.
The first connecting rod is provided with a matched stop point inserted into the arc groove of the second connecting rod; in the unfolding state, one end of the blocking point in the arc groove tightly supports the second connecting rod; under the folding state, the other end of the blocking point in the arc groove supports the second connecting rod tightly.
The foundation structure is provided with a first supporting seat, and the first supporting seat is provided with a first supporting installation shaft extending out in the lateral direction; the second connecting rod is provided with a first connecting rod mounting shaft which extends out laterally; the both ends of first connecting rod articulate respectively in first support installation axle and first connecting rod installation axle.
The base structure is provided with a second supporting seat which is spaced from the first supporting seat, and the second supporting seat is provided with a second supporting installation shaft which extends out laterally; the second link has a laterally projecting second link mounting shaft spaced from the first link mounting shaft; the both ends of flexible connecting rod articulate respectively in second support installation axle and second connecting rod installation axle.
The second support seat is provided with a third support mounting shaft which is spaced apart from the second support mounting shaft and extends laterally; the middle part of the telescopic connecting rod is provided with a third connecting rod mounting shaft which extends out laterally; the two ends of the third connecting rod are respectively hinged to the third support mounting shaft and the third connecting rod mounting shaft.
The automobile seat comprises a seat cushion and a backrest which are hinged, and the multi-link folding mechanism is arranged on the side surface of the seat cushion.
The second link is formed as both side wall plates of the seat cushion.
The multi-connecting-rod folding mechanism provided by the invention adjusts the length by the telescopic connecting rod with the linear motion pair, and can enable the second connecting rod to move backwards and downwards in a large stroke by changing the included angle between the first connecting rod and the second connecting rod, thereby solving the problem that the existing four-connecting-rod mechanism is only limited to small stroke adjustment. In particular, the vehicle seat of the present invention can maintain the backrest in a horizontal state in a folded state, increasing the function of a luggage compartment loading space.
Drawings
FIG. 1A is a perspective view of an unfolded state of the multi-link folding mechanism according to the present invention;
FIG. 1B is a schematic link diagram of an unfolded state of the multi-link folding mechanism according to the present invention;
FIG. 2A is a perspective view of a folded state of the multi-link folding mechanism according to the present invention;
FIG. 2B is a schematic link diagram in a folded state of the multi-link folding mechanism according to the present invention;
FIG. 3 is an exploded view of a multi-link folding mechanism according to the present invention;
FIG. 4 is a perspective view of a pantograph linkage of the multi-link folding mechanism according to the present invention;
FIG. 5 is a perspective view of a first link of the multi-link folding mechanism according to the present invention;
FIG. 6 is a schematic view of the locking of the multi-link folding mechanism in an unfolded state according to the present invention;
FIG. 7 is an unlocking schematic of the multi-link folding mechanism according to the present invention in an unfolded state;
FIG. 8 is a locking schematic of the multi-link folding mechanism according to the present invention in a folded state;
FIG. 9 is an adjustment perspective of a vehicle seat including a multi-link folding mechanism according to the present invention;
fig. 10 is an adjustment schematic of a prior art four-bar linkage.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1A and 1B, the multi-link folding mechanism 1 according to the present invention includes a first link 11, a second link 12, a telescopic link 13, and a third link 14, wherein bottom ends of the first link 11, the telescopic link 13, and the third link 14 are hinged to a fixed plane, a top end of the first link 11 is hinged to the second link 12, the second link 12 is hinged to a top end of the telescopic link 13, and a middle portion of the telescopic link 13 is hinged to a top end of the third link 14. Since the length of the telescopic link 13 can be changed, the second link 12 can be moved backward and downward with a large stroke by changing the included angle α between the first link 11 and the second link 12, and the telescopic link can be adjusted from the unfolded state shown in fig. 1A and 1B to the folded state shown in fig. 2A and 2B with a large stroke.
As shown in fig. 3, the multi-link folding mechanism 1 further includes a base structure 15 on a fixed surface to which a first support seat 151 and a second support seat 152 spaced apart from each other are fixed by screws, wherein the first support seat 151 has a first support mounting shaft 151a protruding laterally, and the second support seat 152 has a second support mounting shaft 152a and a third support mounting shaft 152b protruding laterally and spaced apart from each other. The second link 12 has laterally projecting first and second link mounting shafts 121 and 122 spaced apart from each other. The middle of the pantograph link 13 has a laterally projecting third link mounting shaft 131. Both ends of the first link 11 are hinged to the first support mounting shaft 151A and the first link mounting shaft 121, respectively, to achieve the support and rotation functions of the front end of the second link 12 through two hinge points (see fig. 1A and 2A). Both ends of the telescopic link 13 are respectively hinged to the second support mounting shaft 152A and the second link mounting shaft 122, and both ends of the third link 14 are respectively hinged to the third support mounting shaft 152b and the third link mounting shaft 131, so as to realize the supporting and rotating functions of the rear end of the second link 12 through four hinge points (see fig. 1A and 2A).
As shown in fig. 4, the telescopic link 13 includes a first member 131 hinged to the second link 12 (see fig. 3), a second member 132 hinged to the base structure 15 (see fig. 3), and a linear slide assembly located therebetween, the linear slide assembly including a guide rail 133 and a slider 134 slidable along the guide rail 133, wherein the first member 131 and the slider 134 are fixedly connected by a screw 135, and the second member 132 and the guide rail 133 are fixedly connected by a bolt, so that the first member 131 and the second member 132 can move telescopically in a length direction to form a linear motion pair. When the telescopic link 13 contacts the second member 132 at the slider 134, the extreme position of movement is reached, i.e. the catch point.
As shown in fig. 3, the multi-link folding mechanism 1 further includes a lock unlocking mechanism 16 provided on the second link 12 for locking and fixing the second link 12 in the unfolded state or the folded state and for unlocking the second link 12 from the unfolded state or the folded state to adjust to the folded state or the unfolded state. The lock-unlock mechanism 16 includes an execution unlock mechanism 161, a cable 162, a lock-up latch 163, and a compression spring 164, wherein the execution unlock mechanism 161 is fixed to one side of the second link 12 by screw installation, the lock-up latch 163 passes through the compression spring 164 and is movably installed to the other side of the second link 12 by a mount, and the cable 162 extends through the second link 12 and is connected to the execution unlock mechanism 161 and the lock-up latch 163, respectively, so that the lock-up latch 163 is driven to retract backward in the axial direction against the urging force of the compression spring 164 by the execution unlock mechanism 161 via the cable 162.
As shown in fig. 5, the top end of the first link 11 has a laterally protruding boss 111 inserted into the first link mounting shaft 121 to be hinged (see fig. 3). The boss 111 has a first pin hole 111a and a second pin hole 111b penetrating through a circumferential wall thereof, which are engaged with the locking pin 163. The first link 11 further has a stopper 112 having a sheet-like structure extending in an arc shape, and is inserted into and engaged with an arc groove 123 below the first link mounting shaft 121 of the second link 12 (see fig. 3).
As shown in fig. 6, in the unfolded state, the lock latch 163 is extended forward in the axial direction by the driving of the compression spring 164, remains inserted into the first latch hole 111a, and fixes the first link 11 and the second link 12, thereby locking the multi-link folding mechanism 1. At this time, the stopping point 112 is located at one end of the arc groove 123 and is tightly pressed against the second link 12, so as to play a role of supporting the second link 12.
As shown in fig. 7, the cable 162 pulls the locking latch 163 backward against the elastic force of the compression spring 164 by performing the unlocking mechanism 161 (see fig. 3) to withdraw from the first latch hole 111a of the boss 111, so that the boss 111 (the first link 11) and the first link mounting shaft 121 (the second link 12) can rotate relative to each other, the angle between the first link 11 and the second link 12 is changed to be folded, and the stopping point 112 moves in the arc groove 123.
When the stopper 112 moves to the other end of the arc groove 123 and abuts against the second link 12, the boss 111 (the first link 11) rotates to the position shown in fig. 8, and the lock latch 163 is inserted into the second latch hole 111b by the driving of the compression spring 164, so that the first link 11 and the second link 12 are fixed in the folded state, thereby locking the multi-link folding mechanism 1.
As shown in fig. 9, the car seat 2 according to the present invention includes a seat cushion 21 and a seat back 22, wherein the seat back 22 and the seat cushion 21 are hinged to achieve folding of the seat back 22, and a multi-link folding mechanism 1 is provided on both sides of the seat cushion 21, wherein the second links 12 are formed as both side wall plates of the seat cushion 21, so that the seat cushion 21 can achieve large-stroke folding by means of the multi-link folding mechanism 1. Furthermore, in the folded state, the backrest 22 can be kept horizontal so that luggage can be placed thereon.
The above embodiments are merely preferred embodiments of the present invention, which are not intended to limit the scope of the present invention, and various changes may be made in the above embodiments of the present invention. All simple and equivalent changes and modifications made according to the claims and the content of the specification of the present application fall within the scope of the claims of the present patent application. The invention has not been described in detail in order to avoid obscuring the invention.
Claims (10)
1. A multi-connecting rod folding mechanism is characterized in that the multi-connecting rod folding mechanism comprises a base structure, a first connecting rod, a second connecting rod, a telescopic connecting rod and a third connecting rod, wherein, two ends of the first connecting rod are respectively hinged with the foundation structure and the second connecting rod, the telescopic connecting rod is provided with a linear motion pair, two ends of the telescopic connecting rod are respectively hinged with the foundation structure and the second connecting rod, two ends of the third connecting rod are respectively hinged with the telescopic connecting rod and the foundation structure, the telescopic connecting rod comprises a first member hinged with the second connecting rod, a second member hinged with the foundation structure and a linear slide rail assembly positioned between the first member and the second member, the linear slide rail assembly comprises a guide rail and a slide block capable of sliding along the guide rail, the first component is fixedly connected with the sliding block, the second component is fixedly connected with the guide rail to form a linear motion pair, and when the sliding block is in contact with the second component, the sliding block reaches the moving limit position to form a first stop point.
2. The multi-link folding mechanism according to claim 1 further comprising a lock-unlock mechanism for locking and unlocking the multi-link folding mechanism in the unfolded state or the folded state.
3. The multi-link folding mechanism of claim 2 wherein the locking and unlocking mechanism comprises an actuating and unlocking mechanism, a cable, a locking bolt and a compression spring, wherein the actuating and unlocking mechanism is fixedly mounted on the second link, the locking bolt passes through the compression spring and is movably mounted on the second link through a mounting seat, and the cable is respectively connected with the actuating and unlocking mechanism and the locking bolt.
4. The multi-bar folding mechanism of claim 3 wherein the first bar has a laterally extending boss hingedly connected to the second bar, the boss having a circumferential wall with a first and second latch hole therethrough, the boss having a latch detent cooperating with the first latch hole when the spring is compressed to lock the multi-bar folding mechanism in the unfolded position, the latch detent cooperating with the second latch hole when the spring is compressed to lock the multi-bar folding mechanism in the folded position.
5. The multi-link folding mechanism according to claim 2 wherein the first link has a second stopper fitted into the circular arc groove of the second link; in the unfolding state, one end of the second stopping point in the arc groove tightly supports the second connecting rod; and under the folding state, the other end of the second stopping point in the arc groove tightly supports the second connecting rod.
6. The multi-link folding mechanism of claim 1 wherein the base structure has a first support base having a laterally projecting first support mounting axle; the second connecting rod is provided with a first connecting rod mounting shaft which extends out laterally; the both ends of first connecting rod articulate respectively in first support installation axle and first connecting rod installation axle.
7. The multi-link folding mechanism of claim 6 wherein the base structure has a second support seat spaced from the first support seat, the second support seat having a laterally projecting second support mounting axle; the second link has a laterally projecting second link mounting shaft spaced from the first link mounting shaft; the both ends of flexible connecting rod articulate respectively in second support installation axle and second connecting rod installation axle.
8. The multi-link folding mechanism of claim 7 wherein the second support mount has a laterally projecting third support mounting axle spaced from the second support mounting axle; the middle part of the telescopic connecting rod is provided with a third connecting rod mounting shaft which extends out laterally; the two ends of the third connecting rod are respectively hinged to the third support mounting shaft and the third connecting rod mounting shaft.
9. A car seat, characterized in that it comprises an articulated seat cushion and a backrest, the multi-link folding mechanism according to any one of claims 1-8 being arranged on the side of the seat cushion.
10. The car seat according to claim 9, wherein the second link is formed as both side wall plates of the seat cushion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811217118.4A CN109435797B (en) | 2018-10-18 | 2018-10-18 | Multi-connecting-rod folding mechanism and automobile seat formed by same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811217118.4A CN109435797B (en) | 2018-10-18 | 2018-10-18 | Multi-connecting-rod folding mechanism and automobile seat formed by same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109435797A CN109435797A (en) | 2019-03-08 |
| CN109435797B true CN109435797B (en) | 2020-08-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811217118.4A Active CN109435797B (en) | 2018-10-18 | 2018-10-18 | Multi-connecting-rod folding mechanism and automobile seat formed by same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109435797B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110745041B (en) * | 2019-11-25 | 2022-05-31 | 上海梵思汽车技术服务有限公司 | Foldable seat of automobile |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3447040A1 (en) * | 1984-12-22 | 1986-06-26 | Audi AG, 8070 Ingolstadt | Vertically adjustable vehicle seat |
| FR2718398B1 (en) * | 1994-04-06 | 1996-07-05 | Peugeot | Device for an adjustable seat, in particular for a motor vehicle, and seat equipped with such a device. |
| CN201718832U (en) * | 2010-05-20 | 2011-01-26 | 上海延锋江森座椅有限公司 | Seat electric handrail lifting mechanism |
| EP2587965B1 (en) * | 2010-07-01 | 2015-07-29 | Johnson Controls Technology Company | Second row package |
| JP6237468B2 (en) * | 2013-06-10 | 2017-11-29 | トヨタ紡織株式会社 | Vehicle seat |
| CN203581038U (en) * | 2013-10-23 | 2014-05-07 | 茅鸿勇 | Brake mechanism for trolley |
| CN105216656A (en) * | 2015-11-10 | 2016-01-06 | 德文能源股份有限公司 | A kind of automobile height adjusting seat |
| CN105539213A (en) * | 2016-02-02 | 2016-05-04 | 沈阳市中瑞机械有限责任公司 | Novel seat height increasing mechanism |
| CN106274560B (en) * | 2016-08-30 | 2018-05-22 | 长春工业大学 | Barbed chair based on II type mechanism of Simpson |
| CN206049420U (en) * | 2016-09-13 | 2017-03-29 | 沈阳市中瑞机械有限责任公司 | A kind of five connecting rod seat-height adjustment mechanisms |
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2018
- 2018-10-18 CN CN201811217118.4A patent/CN109435797B/en active Active
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| CN109435797A (en) | 2019-03-08 |
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Address after: 201315 No. 669 Kang'an Road, Kangqiao Industrial Zone, Pudong New District, Shanghai Patentee after: Yanfeng international Seat System Co., Ltd Address before: 201315 No. 669 Kang'an Road, Kangqiao Industrial Zone, Pudong New District, Shanghai Patentee before: Yanfeng andauto seat Co., Ltd |
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