Quick folding adjustment mechanism for car seats

Abstract

The invention discloses a quick folding adjustment mechanism for a car seat, comprising a rotating support body, a backrest mounting plate capable of rotating relative to the rotating support body, a locking component and an unlocking piece rotating in sequence on the inner side of the backrest mounting plate in a direction away from the rotating support body, an unlocking groove and a locking tooth are respectively formed at the upper and lower ends of the locking component, a locking groove is formed on the radial outer edge of the rotating support body, the locking groove is adapted to the locking tooth, the unlocking piece has a driving part and an operating part, the driving part is located in the unlocking groove, a first spring is provided between the unlocking piece and the backrest mounting plate; under the action of the first spring, the driving part forces the locking tooth of the locking component to be engaged in the locking groove; manipulating the operating part can enable the driving part to overcome the elastic resistance of the first spring and drive the locking tooth to disengage from the locking groove. The beneficial effect of the invention is that the seat back can be quickly folded down.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile seats, and in particular relates to a rapid folding and adjusting mechanism for automobile seats. Background Art

[0002] At present, almost all car seats have the function of adjusting the backrest angle to meet the riding comfort and the needs of people of different body shapes. In the prior art, the backrest angle adjustment is mainly achieved by a recliner, which can change the angle between the backrest and the seat frame. However, when the recliner does not work properly, the backrest will remain fixed and cannot be rotated and adjusted. There are certain safety hazards, and in the event of an emergency, it may even prevent the driver and passengers from escaping.

[0003] In particular, the configuration of electric seats has been improving year by year, and the market share of middle and rear seats that use electric control to adjust the backrest is gradually increasing. Therefore, the possibility of the car seat backrest being unable to adjust due to accidental power outages is also increasing, which seriously threatens the lives of passengers. Summary of the invention

[0004] In view of this, the present invention provides a rapid folding and adjusting mechanism for a car seat, which can realize the rapid folding of the seat back.

[0005] To achieve the above purpose, the technical solution of the present invention is as follows:

[0006] A quick folding adjustment mechanism for a car seat, the key of which is: it includes a rotating support body, the rotating support body is equipped with a backrest mounting plate that can rotate relative to the rotating support body, the backrest mounting plate is sequentially provided with a locking component and an unlocking piece on the radial outer side of the rotating support body, the locking component and the unlocking piece are both rotatably connected to the backrest mounting plate, wherein the upper and lower ends of the locking component are respectively formed with an unlocking groove and a locking tooth, the radial outer end edge of the rotating support body is formed with a locking groove, the locking groove is adapted to the locking tooth, the unlocking piece has a driving part and an operating part, wherein the driving part is at least partially embedded in the unlocking groove, and a first spring is provided between the unlocking piece and the backrest mounting plate; under the action of the first spring, the driving part forces the locking tooth of the locking component to be embedded in the locking groove; operating the operating part can enable the driving part to overcome the elastic resistance of the first spring and drive the locking tooth to disengage from the locking groove.

[0007] With the above structure, the rotating support body is fixed on the seat frame, and the rotating support body is fixed on the seat back. Under normal circumstances, the locking tooth is embedded in the locking groove, so that the backrest mounting plate and the rotating support body maintain a fixed connection relationship, and no relative rotation occurs between the two. When an emergency situation occurs or the backrest needs to be folded down directly, the unlocking piece is controlled to rotate by pulling the external cable, so that the locking tooth can be disengaged from the locking groove to achieve unlocking. At this time, the backrest mounting plate and the rotating support body are in a movably connected relationship, so the backrest can be quickly folded down flat.

[0008] As a preferred embodiment: the unlocking piece is rotatably mounted on the backrest mounting plate via a first rotating shaft, a positioning piece is mounted on the first rotating shaft, a positioning portion protruding outward is provided on the positioning piece, the positioning piece can rotate synchronously with the unlocking piece, and when the locking teeth of the locking component are engaged in the locking groove, the positioning portion abuts against the upper edge of the locking component. The above structure not only helps to improve the locking strength, but also helps to eliminate the matching clearance of the locking component, which is conducive to improving the reliability of locking.

[0009] Preferably, the positioning piece has an outwardly protruding linkage block, the operating part is provided with a convex column, the convex column is located between the linkage block and the positioning piece, the positioning piece can rotate relative to and with the unlocking piece, and a second spring is installed between the two. Under the action of the second spring, the positioning piece can move in a direction close to the locking part, and the operating part is manipulated so that the convex column can drive the positioning piece to move in a direction away from the locking part through the linkage block. With the above structure, the structural design is ingenious. During the unlocking process, the rotation of the unlocking piece first drives the driving part thereon to move, and then drives the positioning piece to move through the convex column and the linkage block, so that both the driving part and the positioning part can leave the locking part, and unlocking is achieved on the basis of having a high locking strength.

[0010] Preferably, the unlocking piece is provided with a hanging part protruding outward, the hanging part is provided with a first hanging slot, the positioning piece is provided with a second hanging slot, the second spring is in an "Ω" shape, and its two ends are respectively hung on the first hanging slot and the second hanging slot. The above structure is adopted for easy assembly.

[0011] Preferably, the width of the unlocking slot is greater than the width of the driving part, and the driving part has an idle stroke during the unlocking process. With the above structure, during the unlocking process, the moment the driving part just leaves the unlocking slot, the locking part is still pressed by the positioning part of the positioning piece. As the unlocking piece moves further, the protruding column contacts the linkage block and drives the positioning piece to rotate. After the positioning part of the positioning piece leaves the locking part, the driving part contacts the other side of the unlocking slot, thereby driving the locking teeth of the locking part to escape from the locking slot to complete the unlocking of the backrest.

[0012] Preferably, the locking component is rotatably mounted on the backrest mounting plate via the second rotating shaft, and both sides of the unlocking groove have an unlocking surface and a locking surface, wherein the unlocking surface is in an arc structure near the bottom of the unlocking groove, and the arc structure is concave toward the direction close to the second rotating shaft. The above structure can ensure the reliability of unlocking.

[0013] As a preference, a third spring is provided between the locking component and the backrest mounting plate. With the above structure, in the locked state, a certain elastic pressure can be applied so that the lock teeth are better embedded in the lock groove.

[0014] As a preferred embodiment, a hanging hole is provided on the operating part. The above structure is adopted to facilitate the assembly and connection of the external cable.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. When the recliner of the seat back fails to work properly due to an accident or sudden power failure, the unlocking piece is operated to release the rotation restriction of the backrest mounting plate by the locking component, and the seat back can rotate freely, which can play an emergency escape role.

[0017] 2. It has extremely high locking strength in the locked state. Even in the event of severe vibration such as a vehicle collision, the lock teeth of the locking component can still remain in the lock groove, with a high safety factor.

[0018] 3. The quick-folding adjustment mechanism can also be used for easy entry and one-touch folding of the middle and rear seats.

[0019] 4. The locking component can be unlocked by controlling the rotation of the unlocking piece through the traction of an external cable, which has the technical advantage of convenient unlocking operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 and Figure 6 It is a structural diagram of the folding adjustment mechanism, wherein: Figure 1 The overlay components in are hidden;

[0021] Figures 2 to 5 It is a schematic diagram of the change of the folding adjustment mechanism from a locked state to an unlocked state. DETAILED DESCRIPTION

[0022] The present invention is further described below in conjunction with embodiments and drawings.

[0023] like Figures 1 to 3As shown, a quick folding adjustment mechanism for a car seat, the main parts involved in the mechanism are: a rotating support body 1, a backrest mounting plate 2, a locking component 3, an unlocking piece 4, and a positioning piece 7. The backrest mounting plate 2 is used to be fixedly assembled on the backrest of the seat, the rotating support body 1 is used to be fixedly connected to the seat frame part of the seat, the lower half of the backrest mounting plate 2 is rotatably connected to the rotating support body 1, the upper half exceeds the upper end of the rotating support body 1, and a mounting area 21 is provided on the exceeding part, the locking component 3 and the unlocking piece 4 are rotatably assembled on the mounting area 21 through the first rotating shaft 6 and the second rotating shaft 9 respectively, and the locking component 3 is located between the unlocking piece 4 and the rotating support body 1, the unlocking piece 4 has a driving part 4a and a manipulation part 4b, the upper end of the locking component 3 is formed with an unlocking groove 3b, the driving part 4a of the unlocking piece 4 is located in the unlocking groove 3b, the lower end of the locking component 3 is formed with a locking tooth 3a, and the upper end edge of the rotating support body 1 is formed with a locking groove 1a, and the locking groove 1a is adapted to the locking tooth 3a.

[0024] The first spring 5 is installed between the unlocking piece 4 and the backrest mounting plate 2. Under the action of the first spring 5, the driving part 4a of the unlocking piece 4 forces the lock tooth 3a of the locking component 3 to fit into the lock groove 1a, so that the backrest mounting plate 2 and the rotating support body 1 maintain a fixed connection relationship, and there is no relative rotation between the two. The operating part 4b is provided with a hanging hole 4f, and the cable on the seat is connected to the hanging hole 4f. The operating part 4b is operated by the cable to make the unlocking piece 4 rotate clockwise around the first rotating shaft 6, so that the driving part 4a can overcome the elastic resistance of the first spring 5, thereby driving the lock tooth 3a to disengage from the lock groove 1a, and realize the unlocking of the seat back.

[0025] In order to unlock the locking component 3 through the above-mentioned connecting rod system, a certain assembly gap should be required between the driving part 4a and the unlocking groove 3b. In order to eliminate the unlocking shaking caused by the assembly gap during the unlocking process, in this embodiment, a positioning piece 7 is rotatably mounted on the outer end of the first rotating shaft 6, and the positioning piece 7 is provided with a positioning portion 7a and a linkage block 7b protruding outward. A boss 4c is provided on the operating part 4b of the unlocking piece 4, and the boss 4c is located between the linkage block 7b and the positioning portion 7a. When the lock tooth 3a is engaged in the lock groove 1a, that is, in the locked state, the positioning portion 7a abuts against the upper edge of the locking component 3, and the positioning piece 7 can rotate relative to and with the unlocking piece 4. A second spring 8 is installed between the two. Under the action of the second spring 8, the positioning portion 7a maintains contact with the upper edge of the locking component 3.

[0026] Based on the above structure, after the folding adjustment mechanism is installed on the seat, when the seat is in normal use, the lock tooth 3a is embedded in the lock groove 1a. When the backrest needs to be unlocked, the unlocking piece 4 is rotated by pulling the cable to unlock the backrest.

[0027] During the backrest unlocking process, the movement relationship of each component is as follows:

[0028] like Figures 2 to 5 As shown, the width of the unlocking groove 3b is greater than the width of the driving portion 4a, and the left and right sides of the unlocking groove 3b are provided with an unlocking surface a and a locking surface b. During the unlocking process, the unlocking piece 4 rotates clockwise, and the driving portion 4a thereon just leaves the locking surface b for a moment, and the locking component 3 is still pressed by the positioning portion 7a of the positioning piece 7. With the further movement of the unlocking piece 4, the boss 4c contacts the linkage block 7b and drives the positioning piece 7 to rotate. After the positioning portion 7a of the positioning piece 7 leaves the locking component 3, the driving portion 4a contacts the unlocking surface a of the unlocking groove 3b again. The unlocking piece 4 continues to rotate to drive the lock tooth 3a of the locking component 3 to disengage from the lock groove 1a, thereby completing the unlocking of the backrest.

[0029] Furthermore, to ensure the reliability of the unlocking operation, the unlocking surface a near the bottom of the unlocking groove 3b is in an arc structure a1, and the arc structure a1 is concave toward the second rotating shaft 9. To facilitate the assembly of the second spring 8, the unlocking piece 4 is provided with an outwardly protruding hanging portion 4d, the hanging portion 4d is provided with a first hanging groove 4e, and the positioning piece 7 is provided with a second hanging groove 7c. The second spring 8 is in an "Ω" shape, and its two ends are respectively hung on the first hanging groove 4e and the second hanging groove 7c.

[0030] like Figure 1 and 3 As shown, a third spring 10 is further provided between the locking component 3 and the backrest mounting plate 2. In the locked state, the third spring 10 can exert a certain elastic pressure, so that the lock tooth 3a is firmly embedded in the lock groove 1a. At the same time, in the locked state, the first spring 5, the second spring 8 and the third spring 10 respectively exert elastic thrusts on the unlocking piece 4, the positioning piece 7 and the locking component 3, and each elastic thrust can act on the locking component 3, so the lock tooth 3a in this embodiment can be extremely stably maintained in the lock groove 1a, and the safety factor of normal use of the seat is higher.

[0031] like Figure 6 As shown, in order to facilitate the installation of the first rotating shaft 6 and the second rotating shaft 9, the backrest mounting plate 2 is equipped with a covering component 11 at the position corresponding to the installation area 21, and the two ends of the first rotating shaft 6 and the second rotating shaft 9 are respectively supported on the covering component 11 and the backrest mounting plate 2, and the setting of the covering component 11 can also serve to shield the moving parts.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present invention. Under the guidance of the present invention, ordinary technicians in this field can make various similar expressions without violating the purpose and claims of the present invention, and such changes all fall within the scope of protection of the present invention.

Claims

1. A quick folding adjustment mechanism for a car seat, characterized in that: The invention comprises a rotating support body (1), on which a backrest mounting plate (2) capable of rotating relative to the rotating support body (1) is mounted, and the backrest mounting plate (2) is provided with a locking component (3) and an unlocking plate (4) in sequence on the radial outer side of the rotating support body (1), and the locking component (3) and the unlocking plate (4) are both rotatably connected to the backrest mounting plate (2), wherein the upper and lower ends of the locking component (3) are respectively formed with an unlocking groove (3b) and a locking tooth (3a), and a locking groove (1a) is formed on the radial outer edge of the rotating support body (1), and the locking groove (1a) and the locking tooth (3a) are connected to each other. ), the unlocking piece (4) comprises a driving part (4a) and an operating part (4b), wherein the driving part (4a) is at least partially embedded in the unlocking groove (3b), and a first spring (5) is provided between the unlocking piece (4) and the backrest mounting plate (2); under the action of the first spring (5), the driving part (4a) forces the locking tooth (3a) of the locking component (3) to be embedded in the locking groove (1a); and by manipulating the operating part (4b), the driving part (4a) can overcome the elastic resistance of the first spring (5) and drive the locking tooth (3a) to disengage from the locking groove (1a); The unlocking piece (4) is rotatably mounted on the backrest mounting plate (2) via a first rotating shaft (6); a positioning piece (7) is mounted on the first rotating shaft (6); a positioning portion (7a) protruding outward is provided on the positioning piece (7); the positioning piece (7) can rotate synchronously with the unlocking piece (4); when the locking tooth (3a) of the locking component (3) is engaged in the locking groove (1a), the positioning portion (7a) abuts against the upper edge of the locking component (3); The positioning piece (7) has an outwardly protruding linkage block (7b); the operating portion (4b) is provided with a convex column (4c), the convex column (4c) is located between the linkage block (7b) and the positioning portion (7a); the positioning piece (7) can rotate relative to and with the unlocking piece (4); and a second spring (8) is installed between the two. Under the action of the second spring (8), the positioning portion (7a) can move in a direction approaching the locking component (3); by operating the operating portion (4b), the convex column (4c) can drive the positioning portion (7a) to move in a direction away from the locking component (3) through the linkage block (7b); the unlocking piece (4) is provided with an outwardly protruding hanging portion (4d), the hanging portion (4d) is provided with a first hanging groove (4e); the positioning piece (7) is provided with a second hanging groove (7c); the second spring (8) is in an "Ω" shape, and its two ends are respectively hung on the first hanging groove (4e) and the second hanging groove (7c); A third spring (10) is provided between the locking component (3) and the backrest mounting plate (2); The width of the unlocking groove (3b) is greater than the width of the driving portion (4a), and during the unlocking process, the driving portion (4a) has an idle stroke.

2. The rapid folding and adjusting mechanism for a car seat according to claim 1, characterized in that: The locking component (3) is rotatably mounted on the backrest mounting plate (2) via a second rotating shaft (9), and the unlocking groove (3b) has an unlocking surface (a) and a locking surface (b) on both sides, wherein the unlocking surface (a) is in an arc surface structure (a1) close to the bottom of the unlocking groove (3b), and the arc surface structure (a1) is concave in a direction close to the second rotating shaft (9).

3. The rapid folding and adjusting mechanism for a car seat according to claim 1, characterized in that: The operating portion (4b) is provided with a hanging hole (4f).

4. The rapid folding and adjusting mechanism for a car seat according to claim 1, characterized in that: A covering component (11) is mounted on the backrest mounting plate (2).

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