Multifunctional angle adjuster for automobile seat

Abstract

The utility model discloses a multifunctional angle adjuster for an automobile seat. The multifunctional angle adjuster comprises a first connecting plate (1), a second connecting plate (2), a toothed plate (3) and a gear (4), a pawl (5) and a driving cam (6) are arranged on the first connecting plate (1), and when the chair back is in a normal adjusting state, the driving cam (6) pushes the pawl (5) to be meshed with the first rack (7), so that the gear (4) is rotated to enable the first connecting plate (1) to be adjusted front and back; when the chair back is in a fast turning state, the driving cam (6) pushes the pawl (5) to be far away from the first rack (7), so that the first connecting plate (1) freely rotates towards the second connecting plate (2) and is folded, and the rotating central shaft is the axis of the gear (4). The rotating center shaft of the angle adjuster is coaxial with a normally-adjusted center shaft when the angle adjuster is quickly turned over, a driving cam is adopted to be matched with a pawl, and the cam drives the cambered surface of the pawl to achieve movement of the pawl.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, specifically a multifunctional angle adjuster for automobile seats, which is mainly used on automobile seats and is used to adjust the backrest angle and realize the backrest to be quickly folded and tilted forward. Background Art

[0002] Recliners are used in car seats to adjust the backrest angle and enable rapid folding and forward tilting of the backrest. Quick folding requires a single button unlocking to allow the backrest to be quickly folded onto the seat. Current recliners rotate the entire recliner upward during quick folding, with the center axis located at the front end of the bottom portion connected to the seat. This means the recliner rotates with the seatback to the top of the seat, which introduces inconvenience to seat design. The position of the recliner must be considered during folding after a quick forward tilt. Furthermore, two rotation centers and a positioning structure for the recliner's base plate connected to the seat complicate the design. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a multifunctional recliner for automobile seats, in which the rotation center axis of the recliner during quick flipping is coaxial with the center axis of normal adjustment, and a driving cam and a pawl are cooperated to realize the movement of the pawl by driving the arc surface of the pawl by the cam, and the utility model has a simple structure, good driving reliability, fast action, and can also reduce the space occupied.

[0004] The technical solution of the utility model is to provide a multifunctional angle adjuster for a car seat with the following structure, including a first connecting plate, a second connecting plate, a tooth plate, and a gear; the tooth plate is fixed to one end of the second connecting plate, the gear is fixed to the first connecting plate, and the gear is connected to the tooth plate, characterized in that a pawl and a driving cam are provided on the first connecting plate, and a first rack is provided on the side wall of the gear; in the normal adjustment state of the seat back, the driving cam pushes the pawl to engage with the first rack, thereby rotating the gear to adjust the first connecting plate forward and backward; in the fast-folding state of the seat back, the driving cam pushes the pawl away from the first rack, so that the first connecting plate can freely rotate toward the second connecting plate and fold, and the central axis of rotation is the axis of the gear.

[0005] After adopting the above structure, the utility model has the following advantages:

[0006] 1. When the backrest is in the quick-flip state, the driving cam pushes the pawl away from the first rack, allowing the first connecting plate to freely rotate toward the second connecting plate and fold. The center axis of rotation is the axis of the gear. During quick flipping, the axis of the gear is used to combine the rotation centers of normal adjustment and quick flipping, making the structure simpler and more compact. 2. The driving cam and the pawl are coordinated to achieve the movement of the pawl by driving the arc surface of the pawl with the cam. The specific action is that when the backrest is adjusted backward, the driving cam pushes the pawl to engage with the first rack, positioning the gear and the first connecting plate; when the backrest is in the quick-flip state, the driving cam pushes the pawl away from the first rack, causing the gear to rotate around the first connecting plate, that is, the movement of the pawl is achieved by rotating the driving cam. The structure is simple, the driving reliability is good, and the action is fast. 3. The original spring for positioning the pawl can be eliminated, making the structure simple and occupying less space. 4. The adjustment handle of the original structure can be eliminated, increasing the convenience of adjustment.

[0007] As an improvement, the tail end of the pawl is rotated on the first connecting plate through the first rotating shaft, and the bottom side of the front end is a second rack, which engages or disengages with the first rack. The top of the pawl is provided with a driving end that cooperates with the driving cam, and is positioned by rack engagement, which has good reliability.

[0008] As an improvement, the driving end is a groove, the side walls of the groove are provided with a first driving surface and a second driving surface, and the driving cam is provided with a first driving protrusion and a second driving protrusion; in the initial state, the first driving protrusion is against the first driving surface, so that the second rack is engaged with the first rack; in the fast flip state, the second driving protrusion is against the second driving surface to make the pawl rotate around the first rotating shaft, so that the second rack is separated from the first rack, so that the drive is direct and can smoothly transition when the two states are switched.

[0009] As an improvement, the driving cam is provided with a driving shaft and a second rotating shaft, and the driving cam is rotatably connected to the first connecting plate through the second rotating shaft. The first connecting plate is provided with an arc groove, and the driving shaft passes through the arc groove. The two ends of the arc groove serve as two positioning positions of the driving shaft, pushing the driving shaft to slide in the arc groove, thereby driving the driving cam to rotate around the second rotating shaft to increase positioning performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 The utility model is a split schematic diagram of a multifunctional recliner for a car seat.

[0011] Figure 2 The utility model is a three-dimensional schematic diagram of a multifunctional recliner for a car seat.

[0012] Figure 3 The present invention is a three-dimensional schematic diagram of a multifunctional recliner for a car seat from another perspective.

[0013] Figure 4 This is a schematic diagram of the connection between the pawl, driving cam and tooth plate of the utility model.

[0014] Figure 5 This is a schematic diagram of the connection of the pawl of the present invention.

[0015] Figure 6 This is a connection diagram of the driving cam of the utility model.

[0016] Figure 7 The utility model is a schematic diagram of a multifunctional recliner for a car seat in a state where the seat back is adjusted backward.

[0017] Figure 8 The utility model is a critical schematic diagram of a multifunctional recliner for a car seat switching between two states.

[0018] Figure 9 The utility model is a schematic diagram of a multifunctional recliner for a car seat for quickly flipping the seat back.

[0019] As shown in the figure:

[0020] 1. First connecting plate, 2. Second connecting plate, 3. Tooth plate, 4. Gear, 5. Pawl, 6. Driving cam, 7. First rack, 8. First rotating shaft, 9. Second rack, 10. First driving surface, 11. Second driving surface, 12. First driving protrusion, 13. Second driving protrusion, 14. Driving shaft, 15. Second rotating shaft, 16. Arc groove. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] like Figure 1-3 As shown, the present invention provides a multifunctional recliner for a car seat, comprising a first connecting plate 1, a second connecting plate 2, a toothed plate 3, and a gear 4. The toothed plate 3 is fixed to one end of the second connecting plate 2, the gear 4 is fixed to the first connecting plate 1, and the gear 4 is connected to the toothed plate 3. The second connecting plate 2 is rotatably connected to the first connecting plate 1.

[0023] like Figure 4-6 As shown, the first connecting plate 1 is provided with a pawl 5 and a driving cam 6. The tail end of the pawl 5 is rotated on the first connecting plate 1 via a first rotating shaft 8, and the driving cam 6 is rotatably connected to the first connecting plate 1 via a second rotating shaft 15. A first rack 7 is provided on the side wall of the gear 4.

[0024] In the normal adjustment state of the chair back, that is, the chair back relies on the gear for normal inclination adjustment, at this time the driving cam 6 pushes the pawl 5 to engage with the first rack 7, that is, the front end of the pawl 5 has teeth that engage with the first rack 7, thereby rotating the gear 4 to adjust the inclination of the first connecting plate 1 forward and backward.

[0025] In the fast-folding state of the seat back, the driving cam 6 pushes the pawl 5 away from the first rack 7, so that the first rack 7 is free from the restraint of the pawl 5, and the first connecting plate 1 is free to rotate and fold toward the second connecting plate 2, and the central axis of rotation is the axis of the gear 4.

[0026] The tail end of the pawl 5 rotates on the first connecting plate 1 via a first rotating shaft 8. The bottom side of the front end is a second rack 9, which engages or disengages with the first rack 7. The top of the pawl 5 is provided with a driving end that cooperates with the driving cam 6. The second rack 9 and the first rack 7 form a certain arc shape.

[0027] like Figure 5 As shown, the driving end is a groove with a U-shaped structure and an opening toward the left. The side wall of the groove is provided with a first driving surface 10 and a second driving surface 11, wherein the first driving surface 10 is located at the bottom of the groove and the second driving surface 11 is located at the top of the groove.

[0028] The driving cam 6 is provided with a first driving protrusion 12 and a second driving protrusion 13; in the initial state, the first driving protrusion 12 abuts against the first driving surface 10, so that the second rack 9 is engaged with the first rack 7; in the fast flip state, the second driving protrusion 13 abuts against the second driving surface 11 to make the pawl 5 rotate around the first rotating shaft 8, so that the second rack 9 is separated from the first rack 7.

[0029] The driving cam 6 is provided with a driving shaft 14 and a second rotating shaft 15. The driving cam 6 is rotatably connected to the first connecting plate 1 via the second rotating shaft 15. The first connecting plate 1 is provided with an arc groove 16. Figure 3 The driving shaft 14 passes through the arc groove 16 , and the two ends of the arc groove 16 serve as two positioning positions of the driving shaft 14 , pushing the driving shaft 14 to slide in the arc groove 16 , thereby driving the driving cam 6 to rotate around the second rotating shaft 15 .

[0030] The drive cam 6 is connected to an elastic device, which positions the drive cam 6 in the normal adjustment state of the seat back. In the quick-flip state, an external force overcomes the elasticity of the elastic device and simultaneously pushes the drive shaft 14 from the bottom end to the top end of the arc-shaped slot 16. The elastic device can be any one of a spring, a torsion spring, a spring sheet, and an elastic block.

[0031] like Figure 7As shown, the chair back is in normal adjustment state, the driving cam 6 abuts against the pawl 5, so that the second rack 9 of the pawl 5 engages with the first rack 7. At this time, the gear 4 is adjusted to adjust the inclination angle of the first connecting plate 1 back and forth normally. At this time, the first driving protrusion 12 abuts against the first driving surface 10, and the second driving protrusion 13 does not contact the inner wall of the groove.

[0032] like Figure 8 As shown, it is a critical diagram from the normal adjustment state of the chair back to the quick-folding state of the chair back. The driving cam 6 is rotated upward until the second driving protrusion 13 abuts against the second driving surface 11, and continues to rotate upward, and pushes the second rack 9 of the pawl 5 away from the first rack 7, so that the first connecting plate 1 can rotate freely around the axis of the gear 4, that is, the first connecting plate 1 can rotate freely toward the second connecting plate 2 and fold, and the center axis of rotation is the axis of the gear 4.

[0033] like Figure 9 The figure shows a state in which the chair back is quickly folded onto the chair seat.

Claims

1. A multifunctional recliner for a car seat, comprising a first connecting plate (1), a second connecting plate (2), a tooth plate (3), and a gear (4); the tooth plate (3) is fixed to one end of the second connecting plate (2), the gear (4) is fixed to the first connecting plate (1), and the gear (4) is connected to the tooth plate (3), characterized in that: A ratchet (5) and a driving cam (6) are provided on the first connecting plate (1), and a first rack (7) is provided on the side wall of the gear (4); in the normal adjustment state of the backrest, the driving cam (6) pushes the ratchet (5) to engage with the first rack (7), thereby rotating the gear (4) to adjust the first connecting plate (1) forward and backward; in the fast-folding state of the backrest, the driving cam (6) pushes the ratchet (5) away from the first rack (7), so that the first connecting plate (1) can freely rotate toward the second connecting plate (2) and fold, and the central axis of rotation is the axis of the gear (4).

2. The multifunctional recliner for a car seat according to claim 1, characterized in that: The tail end of the pawl (5) rotates on the first connecting plate (1) through the first rotating shaft (8), and the bottom side of the front end is a second rack (9), which is engaged with or separated from the first rack (7). The top of the pawl (5) is provided with a driving end that cooperates with the driving cam (6).

3. The multifunctional recliner for a car seat according to claim 2, characterized in that: The driving end is a groove, and the side wall of the groove is provided with a first driving surface (10) and a second driving surface (11), and the driving cam (6) is provided with a first driving protrusion (12) and a second driving protrusion (13); in the initial state, the first driving protrusion (12) abuts against the first driving surface (10), so that the second rack (9) is engaged with the first rack (7); in the fast-flip state, the second driving protrusion (13) abuts against the second driving surface (11) so that the pawl (5) rotates around the first rotating shaft (8), so that the second rack (9) is separated from the first rack (7).

4. The multifunctional recliner for a car seat according to claim 1, characterized in that: The driving cam (6) is provided with a driving shaft (14) and a second rotating shaft (15). The driving cam (6) is rotatably connected to the first connecting plate (1) via the second rotating shaft (15). The first connecting plate (1) is provided with an arc groove (16). The driving shaft (14) passes through the arc groove (16). The two ends of the arc groove (16) serve as two positioning positions of the driving shaft (14), pushing the driving shaft (14) to slide in the arc groove (16), thereby driving the driving cam (6) to rotate around the second rotating shaft (15).

5. The multifunctional recliner for a car seat according to claim 4, characterized in that: The driving cam (6) is connected to an elastic device, and the driving cam (6) is positioned in a normal adjustment state of the chair back through the elastic device.

6. The multifunctional recliner for a car seat according to claim 5, characterized in that: The elastic device is any one of a spring, a torsion spring, a spring sheet, and an elastic block.

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