CN108621878B - Continuous angle adjuster with self-locking device and self-locking method thereof - Google Patents
Continuous angle adjuster with self-locking device and self-locking method thereof Download PDFInfo
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- CN108621878B CN108621878B CN201810628002.3A CN201810628002A CN108621878B CN 108621878 B CN108621878 B CN 108621878B CN 201810628002 A CN201810628002 A CN 201810628002A CN 108621878 B CN108621878 B CN 108621878B
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- friction spring
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000007246 mechanism Effects 0.000 claims abstract description 20
- 230000008030 elimination Effects 0.000 description 4
- 238000003379 elimination reaction Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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
- B60N2/02—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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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
- Seats For Vehicles (AREA)
Abstract
The invention relates to a continuous angle adjuster with a self-locking device and a self-locking method thereof. The friction spring is arranged in a space defined by the outer toothed plate, the shaft sleeve, the first wedge block, the second wedge block and the driving piece; the friction spring is tightly held on the cylindrical inner wall of the outer gear plate through pre-pressing assembly; the friction spring support leg one/two is located in the space defined by the wedge block one/two end surfaces and the driving piece end surface one/two. When a moment is continuously applied to the seat backrest, the generated radial component force can enable the whole gap eliminating mechanism to rotate clockwise, and the end face of the wedge block is contacted with the friction spring support leg and drives the friction spring support leg to rotate; in the process, the outer diameter of the friction spring tends to be increased, the friction spring is tightly held on the cylindrical inner wall of the outer gear plate, and the generated friction resistance blocks the rotation of the wedge block and even the whole clearance eliminating mechanism, so that the self-locking inside the angle adjuster is realized, and the creep of the angle of the backrest is avoided.
Description
Technical Field
The invention relates to a continuous angle adjuster with a self-locking device and a self-locking method thereof, which is mainly suitable for adjusting and realizing the adjustment of the continuous angle of a backrest in an automobile seat through a hand wheel, and belongs to a safety component in the automobile seat.
Background
The continuous angle adjuster for the automobile seat is a component which is arranged on the automobile seat and can realize continuous and uninterrupted adjustment of the angle of the backrest of the automobile seat.
The continuous angle adjuster of the automobile seat backrest which is put forward in the market mainly comprises a motor driving mode and a hand wheel driving mode.
The motor-driven seat back can ensure that the angle adjuster connecting rod and the gap eliminating device inside the angle adjuster core piece cannot rotate due to the fact that the angle adjuster motor can provide larger blocking force, and therefore the back cannot generate angular creep when being subjected to fatigue load.
The seat backrest driven by the hand wheel is directly fixedly connected with the connecting rod of the angle adjuster, and a certain fatigue load is continuously applied to the seat backrest by a human body in the running process of the vehicle, and the angle adjuster is not provided with a self-locking function, so that the outside is not effectively blocked, the angle of the backrest which is accumulated in daily life can gradually creep and rotate backwards, and the original riding posture of a driver and a passenger is changed, so that the comfort is influenced. Under the condition that a passenger sits on the seat infrequently, the angle of the seat back of the vehicle jolt under the self-gravity condition can creep backwards gradually until the seat back falls to a rear limit position, so that the complaint of a vehicle owner is caused.
Aiming at the problems, the prior art proposal in the market at present mainly comprises the step of adding a self-locking device outside the angle adjuster to realize the self-locking of the backrest, and the step of adding a spring piece inside the angle adjuster to realize the rigid blocking of the clutch.
Chinese patent application number CN201710690970.2 discloses a "continuous angle adjuster of car seat", it includes eccentric wheel, spring and two wedge, and this mechanism adopts upper and lower two-layer, double cam structure, when driving one of them wedge, produces the friction between this wedge and the eccentric wheel, makes the eccentric wheel rotate to reduce the drive hysteresis, improve overall structure's flexibility and eliminate the clearance in the adjustment process. The continuous angle adjuster is suitable for the back of the electric seat driven by a motor, such as the direct driving by a hand wheel, or the shortcoming that the angle of the back can creep gradually exists.
Still other continuous recliner mechanisms for car seats in which the springs used are all tensioned to eliminate the recliner gap do not solve the problem of the seat back angle gradually creeping back.
Disclosure of Invention
The invention aims to solve the technical problems in the prior art, and provides a continuous angle adjuster with a self-locking device and a self-locking method thereof, which have more reasonable structural design, can better eliminate gaps, reduce driving reversing adjustment hysteresis, and can simply and effectively solve the problem of back angle creep in an automobile seat.
The technical scheme adopted by the invention for solving the technical problems is as follows: the continuous angle adjuster with the self-locking device comprises an inner toothed plate, an outer toothed plate, a shaft sleeve, a wrapping ring, a driving piece, a friction spring and a gap eliminating mechanism.
The gap eliminating mechanism comprises an eccentric wheel, a spring and two wedge blocks, wherein the wedge blocks are arranged in the shaft sleeve and adopt an upper layer, a lower layer and double cams to eliminate gaps, and when one wedge block is driven, friction is generated between the wedge block and the eccentric wheel to enable the eccentric wheel to rotate.
The friction spring is characterized in that two supporting legs are arranged, and a spiral spring structure is adopted, wherein the number of turns of the friction spring is larger than 1 but smaller than 4. The friction spring is mounted in a space defined by the outer toothed plate, the shaft sleeve, the first wedge block, the second wedge block and the driving piece, and is tightly held on the cylindrical inner wall of the outer toothed plate through pre-pressing assembly;
The friction spring support leg I is located in a space defined by one end face of the wedge block and one end face of the driving piece, and the friction spring support leg II is located in a space defined by the two end faces of the wedge block and the two end faces of the driving piece.
Further, in the angle adjuster, the driving piece is axially pressed by the angle adjuster, so that axial movement of the friction spring is avoided, and the friction spring is respectively contacted with the end face of the shaft sleeve and the end face of the driving piece.
Furthermore, the shaft sleeve is matched on the cylindrical inner wall of the external gear plate and is positioned at the cylindrical inner wall of the tooth end of the external gear plate, and the friction spring is tightly held at the cylindrical inner wall of the non-tooth end of the external gear plate.
Further, the friction spring of the invention has an outer diameter larger than the inner diameter of the cylindrical inner wall of the outer toothed plate in a free state.
The self-locking method of the continuous angle adjuster is characterized by comprising the following steps of: when a clockwise moment is continuously applied to the seat backrest, the generated radial component force can enable the whole gap eliminating mechanism to rotate clockwise, and the two end surfaces of the wedge block are contacted with the friction spring support legs II and drive the friction spring support legs II to rotate clockwise; in the process, the outer diameter of the friction spring tends to be increased, the friction spring is tightly held on the cylindrical inner wall of the outer gear plate, and the generated friction resistance blocks the rotation of the first wedge block, the second wedge block and even the whole clearance eliminating mechanism, so that the self-locking of the inside of the angle adjuster is realized, and the creep of the angle of the backrest of the seat is avoided; similarly, the recliner is also self-locking when a counterclockwise torque is applied to the seat back.
Compared with the prior art, the invention has the following advantages and effects:
1. the problem of back angle creep is solved through increasing a friction spring in the angle modulation ware, and this friction spring installs in the inside tubular structure of outer pinion rack, has that forward regulating force is less, reverse blocking force is big characteristics. When fatigue load is applied to the backrest, the friction force provided by the friction spring balances the radial component force generated by the continuous angle adjuster, and the core piece clearance eliminating mechanism is prevented from rotating, so that the backrest is ensured not to rotate in an angle way.
2. The main structure of the original CN201710690970.2 patent application is utilized, and an upper layer and a lower layer and double cams are adopted to eliminate the gap structure, so that the bearing strength of the angle adjuster is improved, and the gap elimination compensation under the condition of part abrasion is realized; the cam is a movable cam and consists of two wedge blocks, so that the clearance elimination effect under the normal working condition is achieved; because the eccentric wheel covers the two wedge-shaped blocks to form a closed space, the integral posture of the two wedge-shaped blocks can be ensured under the condition that the angle adjuster is loaded; meanwhile, because the two wedge blocks are in contact with the special cambered surface of the eccentric wheel, when the wedge blocks are driven, friction is generated between the wedge blocks and the eccentric wheel, and a certain force can be provided to drive the eccentric wheel to rotate, so that driving hysteresis is effectively reduced, and the flexibility of the overall structure and the clearance elimination effect in the adjusting process are improved.
In a word, the invention has more reasonable structural design, simply and effectively solves the problem of angular creep of the backrest of the automobile seat, and ensures that the automobile seat is more comfortable to drive and safer and more reliable to use.
Drawings
Fig. 1 is a schematic development view of the overall structure of the present invention.
Fig. 2 is a schematic structural view of the gap elimination mechanism in the present invention.
Fig. 3 is a schematic cross-sectional view of the assembled structure of fig. 1.
Fig. 4 is a schematic cross-sectional view of fig. 3.
Fig. 5 is a schematic structural view of a driving member in the present invention.
Fig. 6 is a schematic diagram of the principle of motion of the friction spring and the position of the wedge block in the present invention.
In the figure: the inner toothed plate, the outer toothed plate, the 3 shaft sleeve, the 4 wedge block I, the 5 wedge block II, the 6 eccentric wheel, the 7 spring, the 8 gasket, the 9 wrap ring, the 10 friction spring, the 11 driving piece, the 12 gasket, the 13 spring clip, the 2a outer toothed plate cylindrical inner wall, the 2b outer toothed plate leaning against tooth end cylindrical inner wall, the 2c outer toothed plate non-tooth end cylindrical inner wall, the 3a shaft sleeve end face, the 4a wedge block end face, the 5a wedge block II end face, the 10a friction spring support leg I, the 10b friction spring support leg II, the 11a driving piece end face I, the 11b driving piece end face II and the 11c driving piece end face III.
Detailed Description
Referring to fig. 1-6, the embodiment mainly comprises an inner toothed plate 1, an outer toothed plate 2, a shaft sleeve 3, a first wedge block 4, a second wedge block 5, an eccentric wheel 6, a spring 7, a gasket 8, a wrapping ring 9, a friction spring 10, a driving piece 11, a gasket 12 and a spring clamp 13; wherein: the first wedge block 4, the second wedge block 5, the eccentric wheel 6 and the spring 7 form a clearance eliminating mechanism I, and the adjacent ends of the first wedge block 4 and the second wedge block 5 are larger than the other ends thereof. When the automobile seat backrest angle adjusting device is used, the inner toothed plate 1 is fixedly connected with the seat backrest, the outer toothed plate 2 is fixedly connected with the seat cushion, and the rotating arm is driven by the hand wheel to adjust the angle of the automobile seat backrest.
In the embodiment, the external gear plate 2 adopts a cylindrical structure, namely, the outer ring of the external gear plate 2 is directly designed into a tooth shape, and the inner circle is pulled into a cylindrical structure; the packing ring 9 is fixedly connected with the inner gear plate 1, and a gap eliminating mechanism I is arranged in the shaft sleeve 3, wherein the gap eliminating mechanism adopts an upper layer and a lower layer and double cams to eliminate gaps, and when one wedge block is driven, friction is generated between the wedge block and the eccentric wheel 6, so that the eccentric wheel 6 rotates. This structure is identical or equivalent to that of the CN201710690970.2 patent application and will not be repeated here.
In this embodiment, the friction spring 10 is installed in the space defined by the outer toothed plate 2, the sleeve 3, the wedge block one 4, the wedge block two 5, and the driving member 11. The method comprises the following steps:
in the radial direction of the angle adjuster, the friction spring 10 is held tightly against the cylindrical inner wall 2a of the external gear plate by pre-pressing assembly.
In the axial direction of the angle adjuster, the driving piece 11 is axially pressed, so that the friction spring 10 is prevented from axially moving. The friction spring 10 is in contact with the sleeve end face 3a, and the friction spring 10 is in contact with the driver end face 11 c.
In this embodiment, two legs in the same direction are connected to the friction spring 10, and the first friction spring leg 10a is located in the space defined by the wedge-shaped block end face 4a and the first driving member end face 11 a; the second friction spring leg 10b is located in the space defined by the wedge block end face 5a and the driving member end face 11 b.
The friction spring 10 adopts a spiral spring structure, and the number of turns is more than 1 and less than 4; the friction spring 10 has an outer diameter larger than an inner diameter of the outer-toothed plate cylindrical inner wall 2 a.
The motion principle of the invention is as follows:
When the back angle of the automobile seat back is adjusted by rotating the hand wheel of the automobile seat back clockwise, the driving piece 11 rotates clockwise, the first end face 11a of the driving piece pushes the first friction spring support leg 10a to rotate, and the first friction spring support leg 10a contacts with the first wedge block 4 to push the first friction spring support leg to rotate, so that the angle of the angle adjuster is adjusted.
During the rotation of the first friction spring leg 10a, the outer diameter of the friction spring 10 is reduced, and the force holding the inner wall 2a of the outer gear plate is also reduced, so that the force driving moment is smaller during the rotation.
The same is true for counterclockwise adjustment of the hand wheel.
The self-locking method and principle of the invention are as follows:
when a clockwise moment is continuously applied to the automobile seat backrest, the generated radial component force can enable the whole gap eliminating mechanism to rotate clockwise, the two end faces 5a of the wedge block are in contact with the second friction spring support legs 10b, and the second friction spring support legs 10b are driven to rotate clockwise.
In the process, the outer diameter of the friction spring 10 tends to be increased, the friction spring 10 is firmly held tightly on the cylindrical inner wall 2a of the outer gear plate, and the generated friction resistance blocks the rotation of the first wedge block 4, the second wedge block 5 and even the whole clearance eliminating mechanism I, so that the self-locking of the angle adjuster is realized, and the creep of the angle of the backrest of the automobile seat is avoided.
Similarly, when a counterclockwise moment is applied to the backrest of the automobile seat, the angle adjuster can realize self-locking.
The friction spring 10 is mounted as follows:
The shaft sleeve (3) is tightly matched on the external gear plate cylindrical inner wall 2a and is positioned at the position of the external gear plate close to the gear end cylindrical inner wall 2b, and the friction spring 10 is tightly held at the position of the external gear plate non-gear end cylindrical inner wall 2 c. Specifically, since the outer diameter of the friction spring 10 is larger than the inner diameter of the external-gear-plate cylindrical inner wall 2a, the friction spring 10 must be tightened first and then fitted into the external-gear-plate cylindrical inner wall 2a, at which time the friction spring 10 is in contact with the sleeve end face 3a and with the driver end face three 11 c.
After installation/during use, referring to fig. 6, two ends of the spring 7 are positioned at the big ends of the wedge block one 4 and the wedge block two 5, namely the adjacent ends thereof, so as to play a role in tensioning, but can loosen after continuous use; therefore, a friction spring 10 is designed to prevent creep of the back angle, namely: the friction spring support leg I10 a and the friction spring support leg II 10b are respectively positioned at the small ends of the wedge block I4 and the wedge block II 5, namely at the wedge block one end surface 4a and the wedge block two end surface 5a, and a gap h is reserved between the friction spring support leg I and the small ends of the wedge block I4 and the wedge block II 5. When a moment is continuously applied to the automobile seat backrest, the first friction spring support leg 10a is contacted with one end face 4a of the wedge block, or the second friction spring support leg 10b is contacted with the two end faces 5a of the wedge block, so that the rotation of the first wedge block 4 and the second wedge block 5 is blocked through the first friction spring support leg 10a and the second friction spring support leg 10b, and the creep of the angle of the automobile seat backrest is effectively prevented.
From the foregoing description, those skilled in the art will be able to implement connections not specifically described herein that are identical or equivalent to those of the prior art.
The foregoing in the description is only illustrative of the structure of the invention; moreover, the names of the components of the present invention may be different, and all equivalent or simple changes of the structure, features and principles described in the conception of the present invention are included in the protection scope of the present invention.
Claims (3)
1. A continuous angle adjuster with a self-locking device comprises an inner toothed plate, an outer toothed plate, a shaft sleeve, a wrapping ring, a driving piece and a gap eliminating mechanism (I), wherein the inner toothed plate is fixedly connected with a seat backrest, and the wrapping ring is fixedly connected with the inner toothed plate; the clearance eliminating mechanism (I) comprises an eccentric wheel (6), a spring (7), a first wedge block (4) and a second wedge block (5), wherein the eccentric wheel is arranged in the shaft sleeve (3) and adopts two layers of axial wedge blocks to form a double-cam clearance eliminating gap, and when one wedge block in the first wedge block (4) and the second wedge block (5) is driven, friction is generated between the wedge block and the eccentric wheel (6) to enable the eccentric wheel (6) to rotate, and the clearance eliminating mechanism is characterized in that:
The friction spring (10) is of a spiral spring structure, the number of turns of the friction spring is larger than 1 and smaller than 4, the friction spring (10) is arranged in a space defined by the outer gear plate (2), the shaft sleeve (3), the first wedge block (4), the second wedge block (5) and the driving piece (11), and the friction spring (10) is tightly held on the cylindrical inner wall (2 a) of the outer gear plate through pre-pressing assembly;
the friction spring (10) is connected with two supporting feet in the same direction, the first friction spring supporting foot (10 a) is positioned in a space defined by one end face (4 a) of the wedge-shaped block and the first end face (11 a) of the driving piece, and the second friction spring supporting foot (10 b) is positioned in a space defined by the two end faces (5 a) of the wedge-shaped block and the second end face (11 b) of the driving piece;
In the axial direction of the angle adjuster, the driving piece (11) is axially pressed, so that the friction spring (10) is prevented from axially moving, and the friction spring (10) is respectively contacted with the end face (3 a) of the shaft sleeve and the end face III (11 c) of the driving piece;
The outer diameter of the friction spring (10) is larger than the inner diameter of the cylindrical inner wall (2 a) of the outer gear plate.
2. The continuous recliner with self-locking device according to claim 1 wherein: the shaft sleeve (3) is matched with the external gear plate cylindrical inner wall (2 a) and is positioned at the position of the external gear plate cylindrical inner wall (2 b) close to the gear end, and the friction spring (10) is tightly held at the position of the external gear plate non-gear end cylindrical inner wall (2 c).
3. A method of self-locking a continuous recliner as set forth in claim 1, wherein: when clockwise moment is continuously applied to the backrest, the generated radial component force can enable the gap eliminating mechanism (I) to rotate clockwise integrally, and the two end faces (5 a) of the wedge block are contacted with the two friction spring support legs (10 b) and drive the friction spring support legs to rotate clockwise; in the process, the outer diameter of the friction spring (10) tends to be increased, the friction spring (10) is tightly held on the cylindrical inner wall (2 a) of the outer gear plate, and the generated friction resistance blocks the rotation of the first wedge block (4), the second wedge block (5) and even the whole clearance eliminating mechanism (I), so that the self-locking of the inside of the angle adjuster is realized, and the creep of the angle of the backrest is avoided; similarly, the recliner is also self-locking when a counterclockwise torque is applied to the seat back.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810628002.3A CN108621878B (en) | 2018-06-19 | 2018-06-19 | Continuous angle adjuster with self-locking device and self-locking method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810628002.3A CN108621878B (en) | 2018-06-19 | 2018-06-19 | Continuous angle adjuster with self-locking device and self-locking method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108621878A CN108621878A (en) | 2018-10-09 |
| CN108621878B true CN108621878B (en) | 2024-08-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810628002.3A Active CN108621878B (en) | 2018-06-19 | 2018-06-19 | Continuous angle adjuster with self-locking device and self-locking method thereof |
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| Country | Link |
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| CN (1) | CN108621878B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112060989A (en) * | 2020-09-16 | 2020-12-11 | 飞适动力汽车座椅零件（上海）有限公司 | High-strength manual angle adjuster |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101797900A (en) * | 2010-03-20 | 2010-08-11 | 宁波双林汽车部件股份有限公司 | Built-in inversion-stopping self-locking device of angle adjuster |
| CN107364370A (en) * | 2017-08-14 | 2017-11-21 | 浙江龙生汽车部件科技有限公司 | A kind of continuous recliner of automotive seat |
| CN208439118U (en) * | 2018-06-19 | 2019-01-29 | 浙江龙生汽车部件科技有限公司 | The continuous angle adjustor of automotive seat with self-locking device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005028779B4 (en) * | 2005-06-22 | 2007-07-26 | Keiper Gmbh & Co.Kg | Fitting for a vehicle seat |
| KR101206803B1 (en) * | 2011-03-09 | 2012-11-30 | 주식회사 오스템 | Dial recliner |
-
2018
- 2018-06-19 CN CN201810628002.3A patent/CN108621878B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101797900A (en) * | 2010-03-20 | 2010-08-11 | 宁波双林汽车部件股份有限公司 | Built-in inversion-stopping self-locking device of angle adjuster |
| CN107364370A (en) * | 2017-08-14 | 2017-11-21 | 浙江龙生汽车部件科技有限公司 | A kind of continuous recliner of automotive seat |
| CN208439118U (en) * | 2018-06-19 | 2019-01-29 | 浙江龙生汽车部件科技有限公司 | The continuous angle adjustor of automotive seat with self-locking device |
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| Publication number | Publication date |
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| CN108621878A (en) | 2018-10-09 |
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