Electric recliner for car seat
By using the friction contact surface between the cam, bushing, curved wedge block and shaft sleeve in the electric angle adjuster of the car seat, and combining the torsion spring and pressure plate design, the problem of the traditional angle adjuster is prone to stuttering during use, improving the comfort experience.
Patent Information
- Application Number
- CN202422176115.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-05
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-09-05
AI Technical Summary
Traditional electric angle adjusters of car seats are prone to stuttering during use, resulting in a reduced comfort level.
By improving the structure, the frictional contact surface between the cam, bushing, arcuate wedge block and shaft sleeve is adopted, combined with the design of torsion spring and pressure plate, limiting the axial deflection of the wedge block and enhancing the contact tightness of the parts.
It effectively improves the defect that the product is prone to lag in its user experience and improves the comfort experience.
Smart Images
Figure CN222713357U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of car seat recliners, and in particular to an electric recliner for car seats. Background Art
[0002] The recliner is a component installed on a car seat to adjust the angle of the seat back. It has a crucial impact on the safety and comfort adjustment of the car seat.
[0003] At present, conventional electric regulators include a main gear plate and a slave gear plate. The end face of the main gear plate facing the slave gear plate is provided with an outer gear ring, and the end face of the slave gear plate facing the main gear plate is provided with an inner gear ring meshing with the outer gear ring. An axial hole is provided in the middle of the slave gear plate, and a shaft sleeve is provided at the shaft hole of the slave gear plate. The shaft sleeve is sleeved on the cam, and a wedge and a bushing are installed between the shaft sleeve and the outer gear ring.
[0004] However, the inventor believes that this traditional design has the following defects: when the wedge block rotates, the torsion spring will cause the head of the wedge block to deflect upward, resulting in a large axial deflection space when the wedge block rotates, which will cause the product to feel stuck during use and reduce comfort. Utility Model Content
[0005] In order to effectively improve the defect of the product that is prone to lag during use and enhance the comfort experience.
[0006] The present application provides an electric recliner for a car seat, which adopts the following technical solution:
[0007] An electric recliner for a car seat comprises a main gear plate and a slave gear plate, wherein an outer gear ring is arranged on the end face of the main gear plate facing the slave gear plate, and an inner gear ring meshed with the outer gear ring is arranged on the end face of the slave gear plate facing the main gear plate, an axial hole is arranged in the middle of the slave gear plate, and a shaft sleeve is arranged at the shaft hole of the slave gear plate, the outer gear ring of the main gear plate and the shaft sleeve area of the slave gear plate are component installation positions, bushings and cams are sequentially installed in the component installation positions from the outside to the inside, an arc-shaped installation groove is arranged on the outer wall of the cam, and two arc-shaped wedges are symmetrically installed in the arc-shaped installation groove; when the main gear plate and the slave gear plate mesh and rotate, friction contact surfaces or contact points are respectively formed between the inner wall of the bushing and the outer walls of the two arc-shaped wedges, friction contact surfaces or contact points are respectively formed between the inner walls of the two arc-shaped wedges and the groove walls of the arc-shaped installation groove, and friction contact surfaces or contact points are formed between the inner wall of the cam and the outer wall of the shaft sleeve.
[0008] In some embodiments, adjacent ends of the two arc-shaped wedge blocks are provided with torsion spring mounting holes, a torsion spring is provided on the side of the main gear disc away from the slave gear disc, and two ends of the torsion spring are respectively inserted into the corresponding torsion spring mounting holes.
[0009] In some embodiments, a pressure plate is provided at one end of the cam facing the main gear plate, and the pressure plate covers the end faces of the two arc-shaped wedges, the bushing and the outer gear ring. An assembly groove for the two ends of the torsion spring to pass through is provided on the pressure plate at a position matching the adjacent ends of the two arc-shaped wedges.
[0010] In some embodiments, the pressure plate also covers the end surface of the sleeve.
[0011] In some embodiments, the cam includes a main body and an arc-shaped boss. The arc-shaped boss is arranged on the outer wall of the cam, and an arc-shaped installation groove is formed between the two ends of the arc-shaped boss and the outer wall of the main body.
[0012] In some embodiments, the widths of the two arc-shaped wedge blocks gradually decrease from ends closer to each other to ends farther away from each other.
[0013] In summary, the present application includes at least one of the following beneficial technical effects: through structural improvement, compared with the traditional adjuster, the cam is adopted as a built-in solution, and the friction contact surfaces or contact points formed between the bushing, the arc wedge block, the cam, and the shaft sleeve are utilized to make the contact between the components tighter and more reliable, and the axial deflection of the wedge block when rotating is limited by the cam pressure plate, which effectively improves the defect of the product being prone to a sense of jamming in the use experience and improves the comfort experience. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the exploded structure of an electric recliner for a car seat according to an embodiment of the present application.
[0015] Figure 2 It is a schematic cross-sectional structure diagram of an electric recliner for a car seat according to an embodiment of the present application.
[0016] Figure 3 It is a schematic diagram of the structure of a cam in an electric recliner for a car seat according to an embodiment of the present application.
[0017] Explanation of the accompanying drawings: 1. Main gear plate; 2. Slave gear plate; 3. Outer gear ring; 4. Inner gear ring; 5. Bushing; 6. Bushing; 7. Cam; 8. Arc-shaped mounting groove; 9. Arc-shaped wedge block; 10. Torsion spring mounting hole; 11. Assembly groove; 12. Torsion spring; 13. Pressure plate. DETAILED DESCRIPTION
[0018] The following is combined with Figures 1 to 3 This application is described in further detail.
[0019] The present application discloses an electric recliner for a car seat. Figure 1 , 2, including a main gear plate 1 and a slave gear plate 2, the end surface of the main gear plate 1 facing the slave gear plate 2 is provided with an outer gear ring 3, the end surface of the slave gear plate 2 facing the main gear plate 1 is provided with an inner gear ring 4 meshing with the outer gear ring 3, an axial hole is provided in the middle of the slave gear plate 2, and a shaft sleeve 5 is provided at the shaft hole of the slave gear plate 2, the outer gear ring 3 of the main gear plate 1 and the shaft sleeve 5 area of the slave gear plate 2 are component installation positions, and a bushing 6 and a cam 7 are installed in the component installation position from the outside to the inside in sequence, an arc-shaped installation groove 8 is provided on the outer wall of the cam 7, and two arc-shaped wedge blocks 9 are symmetrically installed in the arc-shaped installation groove 8, and the width of the two arc-shaped wedge blocks 9 gradually decreases from the ends close to each other to the ends away from each other.
[0020] In this embodiment, compared with the traditional regulator, six friction positions can be formed on both sides with the axis as the center, that is, when the main gear plate 1 and the slave gear plate 2 are meshed and rotated, friction contact surfaces or contact points are formed between the inner wall of the bushing 6 and the outer walls of the two arc-shaped wedge blocks 9, and at the same time, friction contact surfaces or contact points are formed between the inner walls of the two arc-shaped wedge blocks 9 and the groove walls of the arc-shaped mounting grooves 8, respectively. In order to enable the two arc-shaped wedge blocks 9 to always maintain this contact tension, adjacent ends of the two arc-shaped wedge blocks 9 are provided with torsion spring mounting holes 10, and a torsion spring 12 is provided on the side of the main gear plate 1 away from the slave gear plate 2, and the two ends of the torsion spring 12 The ends are respectively inserted into the corresponding torsion spring mounting holes 10, and under the action of the torsion spring 12, the outer wall of one side of the two arc-shaped wedge blocks 9 can be pressed against the bushing 6, and the inner wall of the other side can better press against the groove wall of the arc-shaped mounting groove 8; wherein, the cam 7 includes a main body and an arc-shaped boss, and the arc-shaped boss is arranged on the outer wall of the cam 7, and an arc-shaped mounting groove 8 is formed between the two ends of the arc-shaped boss and the outer wall of the main body; in addition, a friction contact surface or contact point is formed between the inner wall of the cam 7 and the outer wall of the sleeve 5, and the friction contact surface or contact point between the cam 7 and the sleeve 5 can be achieved by tight assembly between the two.
[0021] At the same time, due to the force of the torsion spring 12, the arc-shaped wedge block 9 will deflect outward from the arc-shaped mounting groove 8, that is, deflect toward the main gear plate 1. In order to reduce this deflection, refer to Figure 3 A pressure plate 13 is provided at one end of the cam 7 facing the main gear plate 1. The pressure plate 13 covers the two arc-shaped wedge blocks 9, the bushing 6 and the end faces of the outer gear ring 3. The pressure plate 13 is provided with assembly grooves 11 for the two ends of the torsion spring 12 to pass through at positions matching the adjacent ends of the two arc-shaped wedge blocks 9. In addition, the pressure plate 13 also covers the end face of the sleeve 5. Under the action of the pressure plate 13, the deflection of the arc-shaped wedge blocks 9 can be effectively improved.
[0022] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. An electric recliner for a car seat, comprising a main gear plate (1) and a slave gear plate (2), wherein an outer gear ring (3) is arranged on the end surface of the main gear plate (1) facing the slave gear plate (2), and an inner gear ring (4) meshing with the outer gear ring (3) is arranged on the end surface of the slave gear plate (2) facing the main gear plate (1), and an axial hole is arranged in the middle of the slave gear plate (2), and a shaft sleeve (5) is arranged at the axial hole of the slave gear plate (2), characterized in that: The outer gear ring (3) of the main gear plate (1) and the shaft sleeve (5) area of the slave gear plate (2) are component installation positions, and the component installation positions are sequentially installed with a bushing (6) and a cam (7) from the outside to the inside. An arc-shaped installation groove (8) is provided on the outer wall of the cam (7), and two arc-shaped wedge blocks (9) are symmetrically installed in the arc-shaped installation groove (8); when the main gear plate (1) and the slave gear plate (2) are meshed and rotated, a friction contact surface or contact point is formed between the inner wall of the bushing (6) and the outer walls of the two arc-shaped wedge blocks (9), a friction contact surface or contact point is formed between the inner walls of the two arc-shaped wedge blocks (9) and the groove wall of the arc-shaped installation groove (8), and a friction contact surface or contact point is formed between the inner wall of the cam (7) and the outer wall of the shaft sleeve (5).
2. The electric recliner for a car seat according to claim 1, characterized in that: The adjacent ends of the two arc-shaped wedge blocks (9) are provided with torsion spring mounting holes (10), and a torsion spring (12) is provided on the side of the main gear plate (1) away from the slave gear plate (2), and the two ends of the torsion spring (12) are respectively inserted into the corresponding torsion spring mounting holes (10).
3. The electric recliner for a car seat according to claim 2, characterized in that: A pressure plate (13) is provided at one end of the cam (7) facing the main gear plate (1), and the pressure plate (13) covers the end surfaces of the two arc-shaped wedge blocks (9), the bushing (6) and the outer gear ring (3). An assembly groove (11) for allowing the two ends of the torsion spring (12) to pass through is provided on the pressure plate (13) at a position matching the adjacent ends of the two arc-shaped wedge blocks (9).
4. The electric recliner for a car seat according to claim 3, characterized in that: The pressure plate (13) also covers the end surface of the shaft sleeve (5).
5. The electric recliner for a car seat according to claim 1, characterized in that: The cam (7) comprises a main body and an arc-shaped boss, wherein the arc-shaped boss is arranged on the outer wall of the cam (7), and an arc-shaped installation groove (8) is formed between the two ends of the arc-shaped boss and the outer wall of the main body.
6. The electric recliner for a car seat according to claim 5, characterized in that: The widths of the two arc-shaped wedge blocks (9) gradually decrease from ends closer to each other to ends farther away from each other.