CN114801910A - Quick folding adjusting mechanism for automobile seat - Google Patents

Abstract

The invention discloses a quick folding adjustment mechanism for an automobile seat, which comprises a rotating support body, a backrest mounting plate capable of being rotated relative to the rotating support body is assembled, and the inner side of the backrest mounting plate is in turn in a direction away from the rotating support body. The rotation is provided with a locking part and an unlocking piece. The upper and lower ends of the locking part are respectively formed with an unlocking groove and a locking tooth. The radial outer edge of the rotating support body is formed with a locking groove. The locking groove is adapted to the locking tooth. It has a driving part and an operating part, the driving part is located in the unlocking groove, and a first spring is arranged between the unlocking piece and the backrest mounting plate; under the action of the first spring, the driving part forces the locking teeth of the locking part to fit in the lock inside the groove; manipulating the operating part can make the driving part overcome the elastic resistance of the first spring and drive the locking teeth out of the locking groove. The beneficial effect of the present invention is that the seat back can be quickly folded down.

Description

Quick Fold Adjustment Mechanism for Car Seats

technical field

The invention belongs to the technical field of automobile seats, and in particular relates to a quick folding adjustment mechanism for automobile seats.

Background technique

At present, almost all car seats have a backrest reclining function to meet the comfort of riding and people of different sizes. In the prior art, the adjustment of the inclination angle of the backrest is mainly realized by means of the angle adjuster, which can realize the angle change between the backrest and the seat frame, but when the angle adjuster cannot work normally, the backrest will remain Fixed, rotation adjustment is not possible. There are certain safety hazards, and even in the event of an emergency, the driver and passengers may not be able to escape.

In particular, the configuration of electric seats has been improved year by year, and the market share of the middle and rear seats with electric control of the backrest rotation adjustment is gradually increasing. Therefore, the possibility that the backrest cannot be adjusted due to unexpected power failure of the car seat is also increasing. It is a serious threat to the safety of passengers.

SUMMARY OF THE INVENTION

In view of this, the present invention provides a quick folding adjustment mechanism for an automobile seat, which can realize the quick fold down of the seat back.

For achieving the above object, the technical scheme of the present invention is as follows:

A quick folding adjustment mechanism for an automobile seat, the key of which is: comprising a rotating support body, on which a backrest mounting plate capable of rotating relative to it is assembled, and the backrest mounting plate is radially outward of the rotating support body A locking member and an unlocking piece are arranged in sequence, and the locking member and the unlocking piece are both rotatably connected with the backrest mounting plate, wherein the upper and lower ends of the locking member are respectively formed with unlocking grooves and locking teeth, and the radially outer portion of the rotating support body is formed. A locking groove is formed on the end edge, and the locking groove is adapted to the locking teeth. The unlocking piece has a driving part and a manipulation part, wherein the driving part is at least partially embedded in the unlocking groove, and the unlocking piece is connected with the backrest mounting plate. A first spring is arranged between them; under the action of the first spring, the driving part forces the locking teeth of the locking part to fit in the locking groove; the operating part can be manipulated to make the driving part overcome the elasticity of the first spring resistance, and drive the lock teeth to leave the lock groove.

With the above structure, the rotating support body is fixed on the seat frame of the seat, and the rotating support body is fixed on the backrest of the seat. Under normal conditions, the locking teeth are fitted into the locking grooves to keep the backrest mounting plate and the rotating support body fixed. Connection relationship, there is no relative rotation between the two, in case of emergency or when the backrest needs to be put down directly, the rotation of the unlocking piece can be controlled by pulling the external cable, so that the locking teeth can be separated from the locking groove and unlocked. At this time, the backrest is The mounting plate and the rotating support body are in a movable connection relationship, so the backrest can be quickly laid down flat.

Preferably: the unlocking piece is rotatably mounted on the backrest mounting plate through a first rotating shaft, a positioning piece is sleeved on the first rotating shaft, the positioning piece is provided with a positioning portion that protrudes outwards, and the positioning piece can follow the unlocking piece. Synchronous rotation, when the locking teeth of the locking member are engaged in the locking groove, the positioning portion abuts on the upper end edge of the locking member. The above structure not only helps to improve the locking strength, but also helps to eliminate the matching gap of the locking components, which is beneficial to improve the reliability of locking.

Preferably, the positioning piece has a linkage block protruding outward, a convex column is arranged on the operating portion, the convex column is located between the linkage block and the positioning portion, the positioning piece can rotate relative to and relative to the unlocking piece, and the two A second spring is installed between them. Under the action of the second spring, the positioning part can move in a direction close to the locking part, and the operating part can be manipulated. The protruding post can drive the positioning part away from the locking part through the linkage block sports. With the above structure, the structural design is ingenious. During the unlocking process, the rotation of the unlocking piece first drives the driving part on it 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. , on the basis of high locking strength, unlocking is realized.

Preferably, the unlocking piece is provided with a hooking portion protruding outward, the hooking portion is provided with a first hanging groove, the positioning piece is provided with a second hanging groove, and the second spring is in the shape of "Ω" , the two ends of which are respectively hooked on the first hanging slot and the second hanging slot. The above structure is adopted to facilitate assembly.

Preferably, the width of the unlocking slot is larger than the width of the driving part, and the driving part has an idle stroke during the unlocking process. By adopting the above structure, during the unlocking process, the locking part is still pressed by the positioning part of the positioning piece at the moment when the driving part leaves the unlocking groove. With the further movement of the unlocking piece, the convex 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 again, so as to drive the locking teeth of the locking part to come out of the locking slot to complete the unlocking of the backrest.

Preferably, the locking member is rotatably mounted on the backrest mounting plate through the second rotating shaft, the two sides of the unlocking slot have an unlocking surface and a locking surface, wherein the position of the unlocking surface close to the bottom of the unlocking slot is in an arc structure, The arc structure is concave toward the direction close to the second rotation axis. With the above structure, the reliability of unlocking can be ensured.

Preferably, a third spring is provided between the locking member and the backrest mounting plate. With the above structure, in the locked state, a certain elastic pressure can be applied, so that the locking teeth are better fitted into the locking grooves.

Preferably, the operating portion is provided with a hanging hole. The above structure is adopted to facilitate the assembly and connection of the external cable.

Compared with the prior art, the beneficial effects of the present invention are:

1. When the angle adjuster of the seat back cannot work normally due to an accident or a sudden power failure, the unlocking piece is manipulated to release the locking member from the rotation restriction of the back mounting plate, and the seat back can be rotated freely, which can be used for emergency escape. effect.

2. It has extremely high locking strength in the locked state. Even under severe shaking such as vehicle collision, the locking teeth of the locking component can still be kept in the lock groove, with a high safety factor.

3. The quick-folding adjustment mechanism can also be used as an easy-entry function and one-key recline for the middle and rear seats.

4. The locking part can be unlocked by controlling the rotation of the unlocking piece by pulling the external cable, which has the technical advantage of convenient unlocking operation.

Description of drawings

Fig. 1 and Fig. 6 are structural schematic diagrams of the folding adjustment mechanism, wherein, the covering part in Fig. 1 has been hidden;

2 to 5 are schematic diagrams illustrating the change of the folding adjustment mechanism from a locked state to an unlocked state.

Detailed ways

The present invention will be further described below with reference to the embodiments and accompanying drawings.

As shown in Figures 1 to 3, a quick folding adjustment mechanism for car seats, the main components involved in the mechanism are: a rotating support body 1, a backrest mounting plate 2, a locking member 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 for fixed connection with the seat frame part of the seat, the lower half of the backrest mounting plate 2 is rotatably connected with the rotating support body 1, and the upper half Beyond the upper end of the rotating support body 1, and an installation area 21 is provided in the excess part, the locking member 3 and the unlocking piece 4 are respectively rotated and assembled on the installation area 21 through the first rotating shaft 6 and the second rotating shaft 9, and the locking member 3 is located on the unlocking piece. 4 and the rotating support body 1, the unlocking piece 4 has a driving part 4a and an operating part 4b, the upper end of the locking part 3 is formed with an unlocking groove 3b, the driving part 4a of the unlocking piece 4 is located in the unlocking groove 3b, and the locking part 3 A locking tooth 3a is formed at the lower end, and a locking groove 1a is formed on the upper edge of the rotating support body 1, and the locking groove 1a is adapted to the locking tooth 3a.

A 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 locking teeth 3a of the locking member 3 to fit into the locking groove 1a, The backrest mounting plate 2 is kept in a fixed connection relationship with the rotating support body 1, and there is no relative rotation between the two. The operating portion 4b is provided with a hanging hole 4f, and the cable on the seat is connected to the hanging hole 4f, and the operating portion 4b is manipulated by the cable to make the unlocking piece 4 rotate clockwise around the first rotating shaft 6, so that the drive can be driven The portion 4a overcomes the elastic resistance of the first spring 5, thereby driving the locking teeth 3a to disengage from the locking groove 1a, thereby realizing the unlocking of the seat back.

To unlock the locking member 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. There is a positioning piece 7 on the outer end of the rotating sleeve. The positioning piece 7 is provided with a positioning part 7a and a linkage block 7b that protrudes outwards. Between it and the positioning portion 7a, when the locking tooth 3a is fitted into the locking groove 1a, that is, in the locked state, the positioning portion 7a abuts on the upper edge of the locking member 3, and the positioning piece 7 can rotate relative to and relative to the unlocking piece 4. , a second spring 8 is installed between the two, and under the action of the second spring 8, the positioning portion 7a keeps in contact with the upper edge of the locking member 3.

Based on the above structure, after the folding adjustment mechanism is installed on the seat, in the normal use state of the seat, the locking teeth 3a are fitted into the locking grooves 1a. When the backrest needs to be unlocked, the unlocking of the backrest can be realized by pulling the unlocking piece 4 through the pull cable to rotate.

During the unlocking process of the backrest, the motion relationship of each component is as follows:

As shown in Figures 2 to 5, the width of the unlocking slot 3b is larger than the width of the driving part 4a, and the left and right sides of the unlocking slot 3b have unlocking surfaces a and b. The moment the upper driving part 4a leaves the locking surface b, the locking part 3 is still pressed by the positioning part 7a of the positioning piece 7. With the further movement of the unlocking piece 4, the protruding post 4c contacts the linkage block 7b and drives the positioning piece. 7 is rotated, after the positioning portion 7a of the positioning piece 7 leaves the locking member 3, the driving portion 4a contacts the unlocking surface a of the unlocking groove 3b again, and the unlocking piece 4 continues to rotate to drive the locking teeth 3a of the locking member 3 to come out of the locking groove 1a, This completes the unlocking of the backrest.

Further, in order to ensure the reliability of the unlocking operation, the position of the unlocking surface a close to the bottom of the unlocking groove 3b is an arc surface structure a1, and the arc surface structure a1 is concave toward the direction close to the second rotating shaft 9 . In order to facilitate the assembly of the second spring 8, the unlocking piece 4 is provided with a hooking portion 4d protruding outward, the hooking portion 4d is provided with a first hanging groove 4e, the positioning piece 7 is provided with a second hanging groove 7c, The two springs 8 are in the shape of "Ω", and their two ends are respectively hung on the first hanging groove 4e and the second hanging groove 7c.

As shown in Figs. 1 and 3, a third spring 10 is further provided between the locking member 3 and the backrest mounting plate 2. In the locked state, the third spring 10 can exert a certain elastic pressure, so that the locking teeth 3a are firmly fitted in the lock slot 1a. Meanwhile, in the locked state, the first spring 5 , the second spring 8 and the third spring 10 exert elastic thrusts on the unlocking piece 4 , the positioning piece 7 and the locking member 3 respectively, and each elastic thrust can act on the locking member 3 Therefore, the locking teeth 3a in this embodiment can be kept in the locking groove 1a extremely stably, and the safety factor of the seat in normal use is higher.

As shown in FIG. 6 , 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 cover member 11 at a 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 cover member 11 and the backrest mounting plate 2, the setting of the cover member 11 can also play the role of shielding the moving member.

Finally, it should be noted that the above description is only a preferred embodiment of the present invention, and those of ordinary skill in the art can make a variety of similar It is indicated that such transformations fall within the protection scope of the present invention.

Claims (9)

1. A quick-folding adjustment mechanism for a car seat, characterized in that it comprises a rotating support body (1) on which a backrest mounting plate (2) capable of being rotated relative to the rotating support body (1) is assembled, The backrest mounting plate (2) is provided with a locking member (3) and an unlocking piece (4) in turn on the radially outer side of the rotating support (1). (2) Rotational connection, wherein the upper and lower ends of the locking member (3) are respectively formed with an unlocking groove (3b) and a locking tooth (3a), and a lock is formed on the radial outer edge of the rotating support (1). a slot (1a), the locking slot (1a) is adapted to the locking teeth (3a), the unlocking piece (4) has a driving part (4a) and a manipulation part (4b), wherein the driving part (4a) at least Partly embedded in the unlocking groove (3b), a first spring (5) is arranged between the unlocking piece (4) and the backrest mounting plate (2); under the action of the first spring (5), the driving part ( 4a) Forcing the locking teeth (3a) of the locking member (3) to fit in the locking groove (1a); manipulating the operating portion (4b), the driving portion (4a) can overcome the force of the first spring (5). elastic resistance, and drive the locking teeth (3a) to escape from the locking groove (1a). 2. The quick-folding adjustment mechanism for a car seat according to claim 1, wherein the unlocking piece (4) is rotated and mounted on the backrest mounting plate (2) through the first rotating shaft (6), so that the The first rotating shaft (6) is sleeved with a positioning piece (7), the positioning piece (7) is provided with a positioning portion (7a) that protrudes outward, and the positioning piece (7) can be synchronized with the unlocking piece (4). Rotating, when the locking teeth (3a) of the locking member (3) are engaged in the locking groove (1a), the positioning portion (7a) abuts on the upper edge of the locking member (3). 3. The quick-folding adjustment mechanism for an automobile seat according to claim 2, characterized in that: the positioning piece (7) has a linkage block (7b) protruding outward, and the operating portion (4b) There is a protruding post (4c) on it, the protruding post (4c) is located between the linkage block (7b) and the positioning part (7a), the positioning piece (7) can rotate relative to and relative to the unlocking piece (4), and the two A second spring (8) is installed between the two springs, under the action of the second spring (8), the positioning part (7a) can move toward the direction close to the locking part (3), and the operating part (4b) is manipulated, and the convex column (4c) can drive the positioning part (7a) to move away from the locking member (3) through the linkage block (7b). 4. The quick-folding adjustment mechanism for a car seat according to claim 3, wherein the unlocking piece (4) is provided with a hooking portion (4d) protruding outward, and the hooking The part (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 the shape of "Ω", and its two ends are respectively hung Connected to the first hanging slot (4e) and the second hanging slot (7c). 5. The quick-folding adjustment mechanism for a car seat according to claim 3 or 4, characterized in that: the slot width of the unlocking slot (3b) is larger than the width of the driving part (4a), and during the unlocking process, The drive part (4a) has an idle stroke. 6. The quick-folding adjustment mechanism for a car seat according to any one of claims 1 to 4, wherein the locking member (3) is rotatably mounted on the backrest mounting plate through the second rotating shaft (9). On (2), the two sides of the unlocking groove (3b) have unlocking surfaces (a) and locking surfaces (b), wherein the position of the unlocking surface (a) close to the bottom of the unlocking groove (3b) is an arc structure (a1), the arc structure (a1) is concave in the direction close to the second rotation axis (9). 7. The quick-folding adjustment mechanism for an automobile seat according to any one of claims 1 to 4, characterized in that: a third Spring (10). 8. The quick-folding adjustment mechanism for an automobile seat according to any one of claims 1 to 4, wherein a hanging hole (4f) is provided on the operating portion (4b). 9. The quick-folding adjustment mechanism for an automobile seat according to any one of claims 1 to 4, wherein a cover member (11) is assembled on the backrest mounting plate (2).

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