CN102275529B

CN102275529B - Automobile backrest folding mechanism

Info

Publication number: CN102275529B
Application number: CN2011101835705A
Authority: CN
Inventors: 刘文才; 陈硕果; 杨慧勇
Original assignee: Chongqing Yanfeng Johnson Controls Automotive Components Co Ltd
Current assignee: Chongqing Yanfeng Adient Automotive Components Co Ltd
Priority date: 2011-07-01
Filing date: 2011-07-01
Publication date: 2012-11-07
Anticipated expiration: 2031-07-01
Also published as: CN102275529A

Abstract

The invention discloses an automobile backrest folding mechanism comprising a connection plate fixed on a cushion framework, wherein the backrest framework is rotatably matched with the connection plate by a locking plate, the locking plate is provided with a limitation pin for limiting the backward turning of a backrest, a locking assembly is used for locking the locking plate when the seat is normally used, or unlocking the locking plate when the backrest needs to be laid down, one end of a locking pin of the locking assembly, which extends into a slot of the locking plate, is cylindrical, and the end face of the locking pin extends out of the side of the locking plate. Because the limiting slot of the locking pin is canceled, the manufacturing process is simplified, the external diameter size can be efficiently ensured, the production efficiency is efficiently enhanced, the production cost is lowered, and the problem of abnormal sound generated by no interval between the automobile backrest folding mechanism and the slot of the locking plate is solved. In addition, through arranging an axial limiting structure to the locking pin and improving the limitation pin and reinforcing ribs, the product quality, the performance, and the production efficiency can be further enhanced, and the manufacturing cost is reduced.

Description

The motor vehicle seat back closing-folding mechanism

Technical field

The present invention relates to the parts of automotive seat, but particularly a kind of closing-folding mechanism of folding seat.

Background technology

The automobile rear seat of band closing-folding mechanism can be easily with back of seat folding forward, to increase the storage space in the car.

In the prior art; Closing-folding mechanism generally comprises the connecting panel that is fixed on the cushion skeleton; The backrest skeleton is through locking plate and connecting panel normal-running fit, is welded with on the connecting panel the backrest spacing locating dowel pin of turning over, and lock assembly is used for when seat normally uses, locking plate being carried out locking or when needs fell backrest, locking plate being carried out release; Existing closing-folding mechanism exists some not enough: 1) lock pin of lock assembly is provided with a position-limited trough; Locking when the draw-in groove of locking plate is stuck in and realizes in the position-limited trough of lock pin that seat normally uses is because the existence of position-limited trough makes lock pin be difficult for processing; And outside dimension is difficult for guaranteeing, the loosening easily abnormal sound that produces of backrest skeleton when spacing; 2) do not carry out axial limiting after the assembling of the lock pin of existing lock assembly, the easy end float misalignment of lock pin when causing vehicle ' produces abnormal sound; 3) locating dowel pin is welded direct on the connecting panel, does not have positioning reference, and conformability is relatively poor, and the single face welding causes the connecting panel distortion easily; 4) reinforced rib of punching press is not an integrative-structure on the connecting panel, for guaranteeing the performance of connecting panel, also needs part of many assemblings, and manufacturing process is complicated, is unfavorable for enhancing productivity and reducing manufacturing cost.

To above-mentioned deficiency, need to improve to closing-folding mechanism, optimize its structure, when avoiding closing-folding mechanism to produce problem such as abnormal sound, also improve the production efficiency of closing-folding mechanism, reduce manufacturing cost.

Summary of the invention

In view of this; The present invention provides a kind of motor vehicle seat back closing-folding mechanism, through the improvement to the closing-folding mechanism lock pin, makes it be easier to processing and assurance outside dimension; Reach the purpose of enhancing productivity and avoiding producing abnormal sound; In addition, through increasing the axial limiting structure and, also can further improve product design, performance, production efficiency and reduce manufacturing cost to the improvement of locating dowel pin, reinforced rib.

Motor vehicle seat back closing-folding mechanism of the present invention; Comprise be connected with the connecting panel of cushion skeleton captive joint, with the backrest skeletal fixation and with the locking plate of connecting panel normal-running fit, be arranged at and turn over the locating dowel pin of angle and be used for lock assembly after being used to limit backrest on the connecting panel locking plate locking or release; Said lock assembly comprise with the connecting panel normal-running fit form the swivel arm of lever construction, the resistance end that is vertically installed in the lock pin of swivel arm resistance end and acts on swivel arm makes lock pin be in the pull back spring of lock position; Said lock pin passes and is arranged at the arcuate socket on the connecting panel and stretches in the draw-in groove of locking plate; The power end of swivel arm is a release lever; The end that said lock pin stretches into the locking plate draw-in groove is cylindrical, and the end face of lock pin stretches out the side of locking plate.

Further, the end face of said lock pin stretch out locking plate side length greater than 5mm;

Further, the axial limiting step is set on the said lock pin, the axial limiting step withstands connecting panel;

Further, said connecting panel is provided with limit pin hole, and said locating dowel pin is inserted in the limit pin hole and with connecting panel captives joint;

Further, punch forming has the reinforced rib that fuses on the said connecting panel.

Beneficial effect of the present invention: motor vehicle seat back closing-folding mechanism of the present invention has the following advantages:

1) lock pin has been cancelled position-limited trough, and structure is simpler, be easy to processing, also be easier to guarantee its outside dimension, make its when locking and the gap between the locking plate draw-in groove be well controlled, avoid producing problems such as abnormal sound;

2) through on limit shaft, increasing the axial limiting ledge structure, guarantee that lock pin can not produce end float misalignment in use and cause occurring abnormal sound;

3) locating dowel pin inserts the structure of limit pin hole, has promptly simplified the manufacturing fitting process, also can avoid directly welding to cause problems such as locating inaccurate and welding deformation, effectively improves quality, performance and the conformability of product;

4) reinforced rib is processed one, can reduce by a part, has both simplified manufacturing process and has improved production efficiency, also can effectively reduce manufacturing cost.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the present invention is further described.

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the structural representation of lock pin;

Fig. 3 is that the A of Fig. 1 is to view;

Fig. 4 is the left view of Fig. 3.

The specific embodiment

Below will combine accompanying drawing that the present invention is elaborated, as shown in the figure: the motor vehicle seat back closing-folding mechanism of present embodiment, comprise the connecting panel 3 of captiveing joint with cushion skeleton 1 through bolt, be welded on the backrest skeleton 2 and with the locking plate 4 of connecting panel 3 normal-running fiies, be arranged at and turn over the locating dowel pin 5 of angle and be used for lock assembly after being used to limit backrest on the connecting panel 3 locking plate 4 lockings or release; Said lock assembly comprise with connecting panel 3 normal-running fiies form the swivel arm 6 of lever construction, the resistance end 6a that is vertically installed in the lock pin 7 of swivel arm 6 resistance end 6a and acts on swivel arm 6 makes lock pin 7 be in the pull back spring 8 of lock position; Pull back spring 8 one ends are connected on the resistance end 6a of swivel arm 6, and the other end is connected on the connecting panel, rely on pulling force to make resistance end 6a be in the trend of upwards rotating always; Said lock pin 7 passes the arcuate socket that is arranged on the connecting panel 3; Under the drive of resistance end 6a, stretch in the draw-in groove 4a of locking plate 4, the power end 6b of swivel arm 6 is a release lever, because lock pin can slide in arcuate socket; When seat normally uses; Under the effect of pull back spring, lock pin slides to the arcuate socket top to the locking plate locking, when needing the folding seat; Force lock pin to slide to the arcuate socket bottom downwards through pulling the elastic force that release lever can overcome pull back spring; Make lock pin not play position-limiting action to locking plate, the end that said lock pin 7 stretches into locking plate 4 draw-in groove 4a is cylindrical, and the end face of lock pin 7 stretches out the side of locking plate 4; One end of lock pin has been cancelled position-limited trough and has been adopted cylindrical; Structure is simpler, is easy to processing, also is easier to guarantee its outside dimension; Make its when locking and the gap between the locking plate draw-in groove be well controlled, avoid producing problems such as abnormal sound.

As the further improvement of technique scheme, the end face of said lock pin 7 stretches out the side length of locking plate 4 greater than 5mm, to avoid locking plate from the slippage of lock pin end, increases the reliability of its locking.

As the further improvement of technique scheme, axial limiting step 7a is set on the said lock pin 7, lock pin axial limited step 7a after being seated withstands connecting panel 3, occurs axial play when avoiding the use of, and produces abnormal sound.

Further improvement as technique scheme; Said connecting panel 3 is provided with limit pin hole; Said locating dowel pin 5 is inserted in the limit pin hole and with connecting panel 3 two sides and welds, and limit pin hole can process the reference for installation as locating dowel pin when the connecting panel stamped, both simplified the fitting process of locating dowel pin; Also can avoid directly welding to cause problems such as locating inaccurate and welding deformation, effectively improve quality, performance and the conformability of product.

As the further improvement of technique scheme, punch forming has the reinforced rib that fuses on the said connecting panel 3, compares with non-integrative-structure reinforced rib of the prior art, can reduce by a part, has both simplified manufacturing process, has also reduced cost.

Explanation is at last; Above embodiment is only unrestricted in order to technical scheme of the present invention to be described; Although with reference to preferred embodiment the present invention is specified, those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement technical scheme of the present invention; And not breaking away from the aim and the scope of technical scheme of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.

Claims

1. motor vehicle seat back closing-folding mechanism; Comprise the connecting panel (3) of captiveing joint with cushion skeleton (1), captive joint with backrest skeleton (2) and with the locking plate (4) of connecting panel (3) normal-running fit, be arranged at and turn over the locating dowel pin (5) of angle and be used for lock assembly after being used to limit backrest on the connecting panel (3) locking plate (4) locking or release; Said lock assembly comprise with connecting panel (3) normal-running fit form the swivel arm (6) of lever construction, the resistance end (6a) that is vertically installed in the lock pin (7) of swivel arm (6) resistance end (6a) and acts on swivel arm (6) makes lock pin (7) be in the pull back spring (8) of lock position; Said lock pin (7) passes in the draw-in groove (4a) that is arranged at the arcuate socket on the connecting panel (3) and stretches into locking plate (4); The power end (6b) of swivel arm (6) is a release lever; It is characterized in that: the end that said lock pin (7) stretches into locking plate (4) draw-in groove (4a) is cylindrical, and the end face of lock pin (7) stretches out the side of locking plate (4).

2. motor vehicle seat back closing-folding mechanism according to claim 1 is characterized in that: the end face of said lock pin (7) stretches out the side length of locking plate (4) greater than 5mm.

3. motor vehicle seat back closing-folding mechanism according to claim 1 is characterized in that: axial limiting step (7a) is set on the said lock pin (7), and axial limiting step (7a) withstands connecting panel (3).

4. according to claim 1,2 or 3 described motor vehicle seat back closing-folding mechanisms, it is characterized in that: said connecting panel (3) is provided with limit pin hole, and said locating dowel pin (5) is inserted in the limit pin hole and with connecting panel (3) captives joint.

5. motor vehicle seat back closing-folding mechanism according to claim 4 is characterized in that: said connecting panel (3) is gone up punch forming has the reinforced rib that fuses.