CN111267685A

CN111267685A - Multifunctional seat backrest

Info

Publication number: CN111267685A
Application number: CN202010084869.4A
Authority: CN
Inventors: 赵轶; 梁杰; 陆旭峰; 徐懿亮; 闵鹏飞
Original assignee: Shanghai Yanfeng Seating Co Ltd
Current assignee: Yanfeng International Seating Systems Co Ltd
Priority date: 2020-02-10
Filing date: 2020-02-10
Publication date: 2020-06-12
Anticipated expiration: 2040-02-10
Also published as: CN111267685B

Abstract

The invention relates to a multifunctional seat backrest, wherein a backrest side plate is pivotally connected with a seat cushion around a sitting and leaning rotation shaft, a backrest motor and a link mechanism are respectively arranged on the backrest side plate, the link mechanism comprises a first link and a second link which are pivotally connected, the first link is linked with the backrest motor, the second link is pivotally connected with a fixed bracket around a fixed rotation shaft, and the fixed bracket is fixed on a vehicle body; when the sitting and leaning on the rotating shaft and keep the position unchanged because the seat cushion is static, the angle between the first connecting rod and the second connecting rod is changed through the driving of the backrest motor so as to realize the backrest adjusting function; when the first link is not changed due to the static holding position of the backrest motor, the angle between the first link and the second link is changed by the movement of the seating rotary shaft to realize the seating linkage function. According to the multifunctional seat backrest, the adjustment functions of the slot and the independent backrest can be realized simultaneously through the link mechanism, and the diversified requirements of customers are met.

Description

Multifunctional seat backrest

Technical Field

The present invention relates to a car seat, and more particularly, to a multifunctional seat back.

Background

With the development of the automobile industry and the change of the automobile market, in order to improve the user experience, customers put forward more and higher requirements on the functions that can be realized by the automobile. In terms of seats, it is desirable for a customer to be able to implement the slouch function, for which reason the prior art slouch seats adjust the backrest angle by means of a guide bar and guide slot structure. However, the guide bar and the guide groove have high tolerance fit requirements for parts, the production cost is increased to a certain extent, and the guide groove limits the space for independent adjustment of the backrest. Further, it is also desirable for the customer to be able to implement both the slouch and individual backrest adjustment functions. However, none of the prior art seats can achieve both functions simultaneously.

Disclosure of Invention

In order to solve the problem that the adjustment function of the slouch and the independent backrest cannot be realized simultaneously in the prior art, the invention provides a multifunctional seat backrest.

The multifunctional seat back comprises a back motor, a back side plate, a link mechanism and a fixed bracket, wherein the back side plate is pivotally connected with a seat cushion around a sitting and leaning rotation shaft; when the seating rotation shaft is kept unchanged in position due to the stationary seat cushion, the angle between the first link and the second link is changed by the driving of the backrest motor to realize a separate backrest adjustment function; when the first link is not changed due to the static holding position of the backrest motor, the angle between the first link and the second link is changed by the movement of the seating rotary shaft to realize the seating linkage function.

Preferably, the link mechanism further comprises a toothed plate and a rear tube, wherein the toothed plate is fixedly connected to the end of the rear tube and is linked with the backrest motor, and the first link is fixedly connected to the middle of the rear tube.

Preferably, the backrest motor has a gear shaft, a first end of the toothed plate is welded and fixed to an end of the rear pipe, and a second end of the toothed plate opposite to the first end is engaged with a gear of the gear shaft.

Preferably, a first end of the first link and a first end of the second link are pivotally connected by a rivet, a second end of the first link opposite to the first end is welded and fixed to a middle portion of the rear pipe, and a second end of the second link opposite to the first end is pivotally connected to the fixing bracket.

Preferably, a nut is welded to the second end of the second link, and the second link is pivotally connected to the fixing bracket by a bolt passing through the nut.

Preferably, the link mechanism further comprises a rear tube support, a first end of the rear tube support is sleeved on the rear tube between the toothed plate and the first link, and a second end of the rear tube support, opposite to the first end, is fixedly connected with the backrest side plate.

Preferably, the back side plate has a first through hole through which the gear shaft freely passes, and the rear pipe bracket has a second through hole which receives a free end of the support gear shaft.

According to the multifunctional seat back, the slouch and independent back adjusting functions can be achieved through the link mechanism, diversified requirements of customers are met, specifically, when the sliding rail is locked (namely a seat cushion is static), the link mechanism can achieve the back adjusting function, and when the sliding rail moves forwards, the link mechanism can achieve the seat slouch function. Therefore, the stroke of different adjusting functions of a customer can be met by adjusting the length and the initial angle of the first connecting rod and the second connecting rod of the connecting rod mechanism. In addition, compared with a backrest adjusting structure with a guide rod and guide groove structure in the prior art, the connecting rod mechanism is simpler, and the production requirements of parts are reduced, so that the cost is reduced.

Drawings

Fig. 1 is a schematic view of the overall structure of a multifunction seat back according to a preferred embodiment of the present invention;

FIG. 2 is a partial exploded view of FIG. 1;

FIG. 3 is an exploded view of the linkage mechanism of FIG. 2;

FIG. 4 illustrates an individual back adjustment function of the multifunction seat back in accordance with a preferred embodiment of the present invention;

fig. 5 illustrates the slouch function of the multifunction seat back according to a preferred embodiment of the present invention.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1 to 2, the multifunction seat back according to one preferred embodiment of the present invention includes a back motor 1, a back side plate 2, a link mechanism 3, and a fixed bracket 4, wherein a bottom end of the back side plate 2 is pivotally connected to a seat cushion (not shown) about a seating rotation axis 21, the back motor 1 and the link mechanism 3 are respectively mounted to the back side plate 2, for example, by bolts, the link mechanism 3 is pivotally connected to a bottom end of the fixed bracket 4 about a fixed rotation axis 41, and a top end of the fixed bracket 4 is fixed to a vehicle body. In this embodiment, the fixing bracket 4 is made of an aluminum magnesium alloy casting, so that the weight of the seat frame can be reduced.

As shown in fig. 3, the link mechanism 3 includes a toothed plate 31, a rear pipe 32, a first link 33, a rear pipe bracket 34 and a second link 35, wherein the toothed plate 31 is fixedly connected to an end portion of the rear pipe 32, the first link 33 is fixedly connected to a middle portion of the rear pipe 32, a first end of the rear pipe bracket 34 is sleeved on the rear pipe 32 between the toothed plate 31 and the first link 33, and the second link 35 is pivotally connected to the first link 33. In the present embodiment, the first end of the toothed plate 31 is welded and fixed to the end of the rear pipe 32, the first end of the first link 33 and the first end of the second link 35 are pivotally connected by a rivet 36, the second end of the first link 33 is welded and fixed to the middle of the rear pipe 32, and the second end of the second link 35 is welded with a nut 37. Referring to fig. 2, the second end of the rear tube bracket 34 is mounted to the second side of the back side plate 2, for example, by bolts. In addition, the back motor 1 has a gear shaft 11 extended, the back side plate 2 has a first through hole 21 through which the gear shaft 11 freely passes, and the rear pipe bracket 34 has a second through hole 341 receiving a free end supporting the gear shaft 11. Between the back side plate 2 and the rear pipe bracket 34, a second end of the toothed plate 31 is engaged with the gear of the gear shaft 11, thereby rotating the toothed plate 31 by the back motor 1. Also, the nut 37 is rotatably coupled to the fixed bracket 4 by, for example, a stepped bolt, so that the second link 35 is rotatable with respect to the fixed bracket 4.

The individual backrest adjustment of the multifunction seat back of the present invention will be described with reference to fig. 4. When the slide rail motor is locked, the seat cushion position is kept still, that is, the position of the sitting and leaning on rotary shaft 21 is not changed, at this time, the back motor 1 (see fig. 2) operates to drive the toothed plate 31 to rotate, so that the angle between the first connecting rod 33 and the second connecting rod 35 is changed, the back side plate 2 moves around the sitting and leaning on rotary shaft 21, that is, the back angle is changed, and the purpose of adjusting the back alone is achieved. In the embodiment shown in fig. 4, the backrest is adjusted forward by 4 ° from the initial position, and the angle between the first link 33 and the second link 35 is changed from 59 ° to 82 °.

The Slouch adjustment of the multifunction seat back of the present invention will be described with reference to fig. 5. When 1 locking of back motor, back curb plate 2, pinion rack 31 and first connecting rod 33 relative position do not change, and fixed bolster 4 is fixed in the automobile body, and slide rail motor function can drive the seat cushion and slide forward this moment, and second connecting rod 35 centers on fixed rotation axis 41 rotary motion, makes the back angle change, reaches the purpose of slope adjustment. Therefore, the slouch can realize the function adjustment of the full-stroke slouch under the condition that the backrest is adjusted by any angle. In the embodiment shown in fig. 5, the backrest slides forward by 100mm from the initial position (i.e., the seating rotation axis 21 moves to the seating rotation axis 21'), and the angle between the first link 33 and the second link 35 is changed from 59 ° to 133 °.

According to the multifunctional seat backrest, the link mechanism 3 can realize the slope and independent backrest adjusting functions at the same time, the diversified requirements of customers are met, specifically, when the sliding rail is locked, the link mechanism 3 can realize the backrest adjusting function, and when the sliding rail moves forwards, the link mechanism 3 can also realize the seat slope function. In this way, by adjusting the lengths and initial angles of the first link 33 and the second link 35 of the link mechanism 3, the strokes of different adjustment functions of the customer can be satisfied. In addition, compared with the backrest adjusting structure with a guide rod and guide groove structure in the prior art, the connecting rod mechanism 3 is simpler, and the production requirements of parts are reduced, so that the cost is reduced.

The above embodiments are merely preferred embodiments of the present invention, which are not intended to limit the scope of the present invention, and various changes may be made in the above embodiments of the present invention. All simple and equivalent changes and modifications made according to the claims and the content of the specification of the present application fall within the scope of the claims of the present patent application. The invention has not been described in detail in order to avoid obscuring the invention.

Claims

1. A multifunctional seat back is characterized by comprising a back motor, a back side plate, a link mechanism and a fixed support, wherein the back side plate is pivotally connected with a seat cushion around a sitting and leaning rotation shaft; when the seating rotation shaft is kept unchanged in position due to the stationary seat cushion, the angle between the first link and the second link is changed by the driving of the backrest motor to realize a separate backrest adjustment function; when the first link is not changed due to the static holding position of the backrest motor, the angle between the first link and the second link is changed by the movement of the seating rotary shaft to realize the seating linkage function.

2. The multifunctional seat back of claim 1, wherein the linkage mechanism further comprises a toothed plate and a rear tube, wherein the toothed plate is fixedly connected to an end of the rear tube and is interlocked with the back motor, and the first link is fixedly connected to a middle portion of the rear tube.

3. The multifunction seat back of claim 2, wherein the back motor has a gear shaft, a first end of the toothed plate is welded to an end of the rear tube, and a second end of the toothed plate opposite to the first end is engaged with a gear of the gear shaft.

4. The multifunction seat back of claim 2, wherein a first end of the first link and a first end of the second link are pivotally connected by a rivet, a second end of the first link opposite the first end is welded to a middle portion of the rear tube, and a second end of the second link opposite the first end is pivotally connected to the stationary bracket.

5. The multifunction seat back of claim 4, wherein a nut is welded to the second end of the second link, the second link being pivotally connected to the stationary bracket by a bolt passing through the nut.

6. The multi-function seat back of claim 3, wherein the linkage mechanism further comprises a rear tube bracket, a first end of the rear tube bracket is sleeved on the rear tube between the toothed plate and the first link, and a second end of the rear tube bracket opposite to the first end is fixedly connected to the back side plate.

7. The multifunction seat back of claim 6, wherein the back side plate has a first through hole through which the gear shaft freely passes, and the rear tube bracket has a second through hole which receives a free end of the support gear shaft.