High-strength rear-row backrest electric adjusting mechanism

Abstract

The utility model discloses a high-strength rear-row backrest electric adjusting mechanism which is characterized in that a rear-row backrest is arranged on a vehicle body through a rotating shaft, a backrest lock is arranged at the upper end of the rear-row backrest, and the high-strength rear-row backrest electric adjusting mechanism comprises a fixing support which is arranged on the vehicle body and corresponds to the backrest lock in position. A sliding block capable of being locked by the backrest lock is arranged between the fixing support and the backrest lock, a guiding sliding groove and a restraining sliding groove which extend front and back and are linear are formed in the fixing support in a vertically spaced mode, and sliding shafts capable of sliding in the sliding grooves are correspondingly arranged in the guiding sliding groove and the restraining sliding groove. Each sliding shaft penetrates through the corresponding sliding groove and then is arranged on the corresponding sliding block, a driving assembly used for driving the sliding blocks to move is arranged on the fixing support through a driving installation assembly, the restraining sliding grooves are additionally arranged, when an automobile is impacted, loads borne by the seat can be separately transmitted to an automobile body, and therefore the overall borne load is increased, and the service life of the automobile is prolonged. And the purpose of protecting the safety of passengers can be achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of rear seat backrest adjustment, and in particular relates to a high-strength electric adjustment mechanism for a rear seat backrest. Background Art

[0002] Chinese patent CN220720872U discloses an electric adjustment mechanism for a rear backrest, and specifically discloses a fixed bracket arranged on the vehicle body and corresponding to the position of the backrest lock, the rear backrest is arranged on the vehicle body through a rotating shaft, a backrest lock is arranged on the upper end of the rear backrest, a sliding groove extending forward and backward and in an arc shape is provided on the fixed bracket, a sliding shaft is arranged in the sliding groove, a slider that can be locked by the backrest lock is arranged after the sliding shaft passes through the sliding groove, the slider is located between the fixed bracket and the backrest lock, and a driving component for driving the slider to rotate along the sliding groove is arranged on the fixed bracket. Although it can realize stepless adjustment of the backrest within a large angle, the overall strength is low. During the static strength test, when the applied load reaches the maximum, the fixed bracket will fail, wherein the static strength test is for better passenger safety. Utility Model Content

[0003] The utility model intends to provide a high-strength electric adjustment mechanism for the rear seat backrest, which has high overall strength and can meet the requirements of static strength testing, thereby achieving the purpose of protecting the safety of passengers.

[0004] To this end, the technical solution adopted by the utility model is: a high-strength electric adjustment mechanism for the rear backrest, the rear backrest is arranged on the vehicle body through a rotating shaft, and a backrest lock is arranged on the upper end of the rear backrest, including a fixed bracket arranged on the vehicle body and corresponding to the position of the backrest lock, a slider that can be locked by the backrest lock is arranged between the fixed bracket and the backrest lock, and guide grooves and constraint grooves that extend forward and backward and are straight are spaced apart from each other on the fixed bracket, and sliding shafts that can slide in the corresponding grooves are correspondingly arranged in the guide grooves and the constraint grooves, and each sliding shaft is arranged on the slider after passing through the corresponding groove, and a driving component for driving the slider to move is arranged on the fixed bracket through a driving mounting component.

[0005] As a preferred embodiment of the above solution, the width of the guide slot matches the outer diameter of the corresponding sliding shaft, and the width of the constraint slot is greater than the outer diameter of the corresponding sliding shaft.

[0006] Further preferably, the drive installation assembly includes a motor bracket arranged on a fixed bracket, the motor bracket is provided with an insertion groove for the drive assembly conversion end to extend into, and the opening side of the insertion groove is equipped with a cover plate for sealing the drive assembly conversion end.

[0007] Further preferably, the drive installation assembly includes a motor bracket arranged on a fixed bracket, the motor bracket is provided with an insertion groove for the drive assembly conversion end to extend into, and the opening side of the insertion groove is equipped with a cover plate for sealing the drive assembly conversion end.

[0008] Further preferably, a lock buckle for locking the backrest lock is provided on the side of the slider facing the backrest lock.

[0009] Further preferably, the driving assembly includes a motor body and a motor screw, one end of the motor screw is screwed to the motor body, and the other end of the motor screw is fixed to the slider.

[0010] Further preferably, the guide slide groove and the constraint slide groove are both correspondingly provided with slide groove bushings for protecting the sliding shaft, and the sliding shaft adopts stepped load-bearing bolts.

[0011] Beneficial effects of the utility model:

[0012] 1) When the driving component is working, it can drive the slider to move along the slide groove, so as to realize the rotation of the rear seat backrest; the adjustment structure is set at the upper position of the backrest, and then the slider of the adjustment structure is locked by the backrest lock, and the rotation of the backrest is realized by the movement of the slider. The overall structure is simple and can realize stepless adjustment of the backrest within a large angle.

[0013] 2) A restraint slide groove is added, which can separate the load on the seat and transfer it to the body when the car is hit, thereby increasing the overall load and overall strength, so that it can achieve the purpose of protecting the safety of passengers. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the utility model.

[0015] Figure 2 It is an exploded view of the utility model.

[0016] Figure 3 It is a schematic diagram of the utility model after installation.

[0017] Figure numerals: fixed bracket-1, guide slide groove-1a, constraint slide groove-1b, slide groove bushing-2, sliding shaft-3, spacer-4, slider-5, screw rod-5a, lock buckle-5b, motor bolt-6, cover plate-7, motor bracket-8, motor body-9, washer-10, retaining ring-11, driving bolt-12, rear seat backrest-13, backrest lock-13a, body-14. DETAILED DESCRIPTION

[0018] The present invention will be further described below by way of embodiments and in conjunction with the accompanying drawings:

[0019] like Figure 1-3 As shown, a high-strength rear seat backrest electric adjustment mechanism is suitable for a rear seat backrest 13 set on the vehicle body through a rotating shaft, that is, the rear seat backrest and the rear seat cushion are set to be hinged, and a backrest lock 13a is set at the upper end of the rear seat back 13, and the backrest lock is a prior art and will not be repeated here.

[0020] The adjustment mechanism is mainly composed of a fixed bracket 1, a sliding shaft 3, a slider 5, a driving assembly and a driving installation assembly. The fixed bracket 1 is arranged on the vehicle body 14 and corresponds to the position of the backrest lock 13a. A slider 5 that can be locked by the backrest lock 13a is arranged between the fixed bracket 1 and the backrest lock 12. A guide slide 1a and a constraint slide 1b that extend forward and backward and are in a straight line are arranged at intervals above and below the fixed bracket 1. A sliding shaft 3 that can slide in the corresponding slide is correspondingly arranged in the guide slide 1a and the constraint slide 1b, and each sliding shaft 3 is arranged on the slider 5 after passing through the corresponding slide. A driving assembly for driving the slider 5 to move is arranged on the fixed bracket 1 through the driving installation assembly. When the driving assembly is working, it can drive the slider to move along the slide, thereby realizing the rotation of the rear seat backrest.

[0021] The trajectories of the guide slot 1a and the constraint slot 1b are fitted inversely according to the rotational motion of the backrest. The guide slot is used to guide the slider when it moves, while the constraint slot acts when the seat is loaded to share the load on the sliding shaft in the guide slot. Preferably, the width of the guide slot 1a matches the outer diameter of the corresponding sliding shaft 3, and the width of the constraint slot 1b is greater than the outer diameter of the corresponding sliding shaft 3, so as to avoid the slider 5 from getting stuck due to over-constraint when it moves.

[0022] The driving assembly includes a motor body 9 and a motor screw 5 b , wherein one end of the motor screw 5 b is fixedly arranged on the slider 5 , and the other end of the motor screw 5 b is screwed on the motor body 9 .

[0023] The drive installation assembly includes a motor bracket 8 arranged on a fixed bracket 1, and an insertion slot for the drive assembly conversion end to be inserted is arranged on the motor bracket 8, and a cover plate 7 for sealing the drive assembly conversion end is provided on the opening side of the insertion slot. In order to facilitate the installation of the motor body, a mounting slot for installing the power supply screw on the motor screw and preventing the motor screw from being separated from the motor body is arranged through the insertion slot on the motor bracket. During installation, one end of the motor screw is first fixed to the slider, and then the other end of the motor screw is passed through one end of the installation slot, the motor body and the other end of the installation slot in sequence. At the same time, a washer 10 and a clamping ring 11 are arranged at the other end of the motor screw to prevent the motor screw from being separated from the motor body.

[0024] In order to facilitate the slider to be locked by the backrest lock, a lock buckle 5a for locking the backrest lock 13a is provided on one side of the slider 5 facing the backrest lock 13a, and the lock buckle is configured as a U-shaped steel wire, and both ends of the steel wire are fixed on the slider.

[0025] To reduce abnormal noise and eliminate gaps, chute bushings 2 for protecting the sliding shaft are correspondingly provided in both the guiding chute 1a and the restraining chute 1b. At the same time, the sliding shaft 3 adopts a stepped bearing bolt, and a spacer 4 through which the two chutes pass is provided between the fixed bracket 1 and the slider 5. For the convenience of installation, the spacer 4 can be snap-connected to the slider 5 through a snap-connection structure. The snap-connection structure includes two snap-connection flanges provided on the spacer and a snap-connection groove provided on the slider for the snap-connection of the snap-connection flanges.

[0026] To further protect the motor body, the cover plate 7 is made of a sheet metal part. At the same time, the motor bracket 8 is set as an assembly welded by three sheet metal parts. The first sheet metal part is set as a U shape, and mounting holes for installing the motor bracket on the fixed bracket are provided on the first sheet metal part. The motor bracket is installed on the fixed bracket through two driving bolts 12. Fixing holes for fixing the motor body are provided on the second sheet metal part. The motor body is installed on the motor bracket through motor bolts 6, and through holes for the motor bolts to pass through are also provided on the cover plate. The third sheet metal part is set as a U shape, and an installation groove for the motor lead screw to pass through is provided on the third sheet metal part. The third sheet metal part is located below the first sheet metal part, and the second sheet metal part is located at the rear side of the first sheet metal part and the third sheet metal part for connecting the first sheet metal part and the third sheet metal part.

Claims

1. A high-strength electric adjustment mechanism for a rear seat backrest, wherein the rear seat backrest (13) is arranged on a vehicle body via a rotating shaft, a backrest lock (13a) is arranged at the upper end of the rear seat backrest (13), and the mechanism comprises a fixing bracket (1) arranged on a vehicle body (14) and corresponding to the position of the backrest lock (13a), a slider (5) which can be locked by the backrest lock (13a) is arranged between the fixing bracket (1) and the backrest lock (13a), and the mechanism is characterized in that: The fixed bracket (1) is provided with a guide slot (1a) and a constraint slot (1b) which are both extended forward and backward and are in a straight line at intervals from top to bottom. The guide slot (1a) and the constraint slot (1b) are each provided with a corresponding sliding shaft (3) which can slide in the corresponding slot, and each sliding shaft (3) is provided on a slider (5) after passing through the corresponding slot. The fixed bracket (1) is provided with a driving assembly for driving the slider (5) to move via a driving installation assembly.

2. The high-strength electric adjustment mechanism for rear seat backrest according to claim 1, characterized in that: The width of the guide sliding groove (1a) matches the outer diameter of the corresponding sliding shaft (3), and the width of the restraining sliding groove (1b) is greater than the outer diameter of the corresponding sliding shaft (3).

3. The high-strength electric adjustment mechanism for rear seat backrest according to claim 1, characterized in that: The drive installation assembly comprises a motor bracket (8) arranged on a fixed bracket (1), the motor bracket (8) being provided with an insertion slot for the drive assembly conversion end to extend into, and the opening side of the insertion slot being provided with a cover plate (7) for sealing the drive assembly conversion end.

4. The high-strength electric adjustment mechanism for rear seat backrest according to claim 1, characterized in that: A spacer (4) for two sliding grooves to pass through is provided between the fixed bracket (1) and the sliding block (5), and the spacer (4) can be clamped on the sliding block (5) through a clamping structure.

5. The high-strength electric adjustment mechanism for rear seat backrest according to claim 1, characterized in that: A lock buckle (5a) for locking the backrest lock (13a) is arranged on one side of the slider (5) facing the backrest lock (13a).

6. The high-strength electric adjustment mechanism for rear seat backrest according to claim 1, characterized in that: The driving assembly comprises a motor body (9) and a motor screw (5b), one end of the motor screw (5b) is screwed onto the motor body (9), and the other end of the motor screw (5b) is fixed onto the slider (5).

7. The high-strength rear seat back electric adjustment mechanism according to claim 1, characterized in that: The guide slide groove (1a) and the restraining slide groove (1b) are both provided with slide groove bushings (2) for protecting the sliding shaft, and the sliding shaft (3) adopts stepped load-bearing bolts.

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