CN111746360A

CN111746360A - Fixed point return mechanism integrating retaining function and automobile seat thereof

Info

Publication number: CN111746360A
Application number: CN202010632846.2A
Authority: CN
Inventors: 刘熙刚; 钱竹; 孙家荣; 赵鹏; 陶惠家
Original assignee: Shanghai Yanfeng Seating Co Ltd
Current assignee: Shanghai Yanfeng Seating Co Ltd
Priority date: 2020-07-02
Filing date: 2020-07-02
Publication date: 2020-10-09
Also published as: CN112265477A; CN112265477B

Abstract

The invention relates to a fixed point return mechanism with integrated holding function, which comprises a base, a connecting rod, a cam, a stop block and a trigger, wherein the connecting rod is rotatably connected to the base around a first pivot shaft, the cam and the connecting rod are relatively fixed, the stop block is rotatably connected to the base around a second pivot shaft and is matched with the cam on a first plane, and the trigger is rotatably connected to the base around a second pivot shaft and is matched with the connecting rod on a second plane. The automobile seat comprises the fixed point return mechanism with the integrated retaining function. The invention realizes the function of keeping interlocking by the trigger matched with the connecting rod, ensures that the seat cannot accidentally return, realizes the fixed-point return by the stop block matched with the cam, and drives the cam to press open the stop block to release the fixed-point function by the return of the connecting rod after the trigger is knocked open to release the interlocking function, thereby having simple structure, reliable function, difficult failure and no clamping stagnation phenomenon of the slide rail.

Description

Fixed point return mechanism integrating retaining function and automobile seat thereof

Technical Field

The invention relates to an automobile seat, in particular to a fixed point return mechanism with an integrated retaining function and an automobile seat with the fixed point return mechanism.

Background

SUV, MPV models with three rows of seats, for the convenience and rapidity of access to the third row, would place an EZE quick entry mechanism on the seat, but would be likely to hit the third row of passengers if the seat position was not controlled or the speed of seat retraction was reduced when the seat was retracted quickly.

The automobile seat with the EZE quick entering mechanism on the current market is not provided with a fixed-point return mechanism usually when retreating, and the existing manual fixed-point return mechanism is complex in structure, large in occupied space, not compact enough and not strong in universality.

Disclosure of Invention

The invention provides a fixed point return mechanism integrating a holding function and an automobile seat thereof, aiming at solving the problems that the automobile seat with an EZE quick entry mechanism in the prior art does not have a fixed point return mechanism in a retreating process and the like.

The fixed point return mechanism with integrated holding function comprises a base, a connecting rod, a cam, a stop block and a trigger, wherein the connecting rod is rotatably connected to the base around a first pivot shaft, the cam and the connecting rod are fixed relatively, the stop block is rotatably connected to the base around a second pivot shaft and is matched with the cam on a first plane, and the trigger is rotatably connected to the base around a second pivot shaft and is matched with the connecting rod on a second plane.

Preferably, the cam and the connecting rod are relatively fixed through a fastener (such as a screw); or the cam and the connecting rod are integrated (e.g., integrally formed) to realize relative fixation.

Preferably, the fixed point return mechanism further comprises a coil spring for driving the stopper and a bidirectional spring for driving the trigger, opposite ends of the coil spring are respectively connected to the stopper and the base, and opposite ends of the bidirectional spring are respectively connected to the trigger and the base.

Preferably, in the design position, the stop is held relatively stationary by the cam and coil spring together, and the trigger is held relatively stationary by the bi-directional spring.

Preferably, the stopper is fixedly connected with a limiting pin, the base is provided with a waist-shaped limiting hole, and the limiting pin is inserted into the limiting hole and matched with the limiting hole to limit the rotation limit of the stopper around the second pivot shaft.

Preferably, the base includes a first cover plate, a second cover plate, a first rivet and a second rivet, wherein the first cover plate and the second cover plate are spaced apart from each other to sandwich the connecting rod, the cam, the stopper and the trigger therebetween, the first rivet for defining the first pivot axis and the second rivet for defining the second pivot axis are spaced apart from each other, both ends of the first rivet and the second rivet are respectively connected to the first cover plate and the second cover plate, the connecting rod is rotatably fitted over the first rivet, and the stopper and the trigger are respectively rotatably fitted over the second rivet.

Preferably, the link is connected to the slide release mechanism and the seat Pitch function is achieved by rotation of the link about the first pivot axis.

The automobile seat comprises the fixed point return mechanism with the integrated retaining function.

Preferably, the vehicle seat comprises a first stop point bracket, the stop block avoids the first stop point bracket by rotating around the second pivot shaft during the forward movement of the seat, and the stop block impacts the first stop point bracket for fixed point return during the backward movement of the seat.

Preferably, the car seat comprises a third gear support, the trigger strikes the third gear support during forward movement of the seat to rotate it from the design position to the interlocking position with the link, and the trigger passes over the third gear support without interference during rearward movement of the seat. It should be appreciated that the third gear bracket is formed as a seat comfort travel gear point.

Preferably, the car seat comprises a second stop support located between the first stop support and the third stop support, the trigger passing over the second stop support without interference during forward movement of the seat, the trigger striking the second stop support during rearward movement of the seat to rotate it from the interlocked position with the link to the design position. It should be appreciated that the second striker support is formed as a seat retention unlatching striker.

Preferably, the vehicle seat includes a fourth gear point bracket against which the trigger impacts during forward movement of the seat to define a forward most position. It should be understood that the fourth gear point bracket is formed as a seat EZE travel gear point.

According to the fixed point return mechanism integrating the holding function and the automobile seat thereof, the holding interlocking function is realized through the trigger matched with the connecting rod, the seat cannot be accidentally retracted, the fixed point return is realized through the stop block matched with the cam, and after the trigger is knocked off to remove the interlocking function, the cam is pressed open through the retraction of the connecting rod to remove the fixed point function, so that the fixed point return mechanism is simple in structure, reliable in function and difficult to lose efficacy, and the slide rail does not have a clamping stagnation phenomenon. In particular, the connecting rod, the cam, the stop block and the trigger of the fixed point return mechanism are clamped between the first cover plate and the second cover plate, the span is small, and the structure is compact. In addition, the fixed-point return mechanism can realize the sharing of multiple platforms through the modularized design, and meets the market demand.

Drawings

FIG. 1 is an exploded view of a fixed point return mechanism integrated with a retention function according to a preferred embodiment of the present invention;

FIG. 2 shows the design position of the stop of the fixed point return mechanism of FIG. 1;

FIG. 3 illustrates the advancement of the stop of the fixed point return mechanism of FIG. 1;

FIG. 4 illustrates the design position of the trigger of the fixed point return mechanism of FIG. 1;

FIG. 5 illustrates the advancement of the trigger of the fixed point return mechanism of FIG. 1;

FIG. 6 illustrates the most forward position of the trigger of the fixed point return mechanism of FIG. 1;

FIG. 7 illustrates the rearward movement of the stop and trigger of the fixed point return mechanism of FIG. 1;

FIG. 8 is an isometric view of a stop and trigger of the fixed point return mechanism of FIG. 1 in a rearward, displaced fixed point position;

FIG. 9 illustrates a retraction process of the linkage of the fixed point return mechanism of FIG. 1;

FIG. 10 is an exploded view of a fixed point return mechanism according to another preferred embodiment of the present invention;

fig. 11 shows the design position of the stopper of the fixed point return mechanism of fig. 10.

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, the fixed point return mechanism with integrated holding function according to a preferred embodiment of the present invention comprises a base 1, a link 2 rotatably coupled to the base 1 around a first pivot axis, a cam 3 fixedly coupled to a side surface of the link 2 by a tapping screw 3a, a stopper 4 rotatably coupled to the base 1 around a second pivot axis and engaged with the cam 3 on a first plane, and a trigger 5 rotatably coupled to the base 1 around a second pivot axis and engaged with the link 2 on a second plane. In the present embodiment, the cam 3 is a plastic cam.

The base 1 includes a first cover plate 11, a second cover plate 12, a first rivet 13 and a second rivet 14, wherein the first cover plate 11 and the second cover plate 12 are spaced apart from each other to sandwich the link 2, the cam 3, the stopper 4 and the trigger 5 therebetween, the first rivet 13 for defining the first pivot axis and the second rivet 14 for defining the second pivot axis are spaced apart from each other, both ends of the first rivet 13 and the second rivet 14 are respectively connected to the first cover plate 11 and the second cover plate 12, the link 2 is rotatably fitted over the first rivet 13, and the stopper 4 and the trigger 5 are respectively rotatably fitted over the second rivet 14. In addition, the base 1 may also include

rivets

15, 16 for riveting the base 1 (i.e., the pointing return mechanism) to an L-shaped mounting bracket (not shown).

The fixed point return mechanism further comprises a coil spring 6 for driving the stop block 4, specifically, a limit pin 4a is fixed at one end of the stop block 4, and two opposite ends of the coil spring 6 are respectively connected to the limit pin 4a and the first cover plate 11. In addition, the first cover plate 11 is also provided with a waist-shaped limiting hole 11a, and a limiting pin 4a is inserted into the limiting hole 11a and is matched with the limiting hole to limit the rotation limit of the stop 4 around the second pivot shaft. The fixed point return mechanism further comprises a bidirectional spring 7 for driving the trigger 5, and in particular, opposite ends of the bidirectional spring 7 are respectively connected to the trigger 5 and the second cover plate 12.

As shown in fig. 2, the stopper 4 is designed to have a counterclockwise tendency by the coil spring 6, and is not rotated counterclockwise since it is always pressed by the cam 3. The external force is applied to the link 2 to rotate the link 2 clockwise around the first rivet 13, and the rear end of the pressing stopper 4 of the cam 3 is lifted up until it is disengaged from the stopper 4, as shown in fig. 3, and the stopper 4 is rotated counterclockwise around the second rivet 14 by the coil spring 6. During the rotation of the link 2, the slide rail unlocking mechanism connected to the link 2 is unlocked and the seat can start to slide forward. During the forward movement of the seat, the bottom surface of the stop 4 contacts the vertex of the first stop point bracket 10, and the forward movement drives the stop 4 to rotate clockwise to avoid the first stop point bracket 10. In particular, the rear surface 10a of the first stop point bracket 10 is gradually raised toward the front, and the stopper 4 is always kept in contact with the first stop point bracket 10 by means of the coil spring 6 during the forward movement, avoiding the shaking and jumping phenomenon that may be generated thereby.

As shown in fig. 4, the trigger 5 is designed to be in a relatively rest state under the action of the bi-directional spring 7. In particular, the bi-directional spring 7 may provide a force to rotate the trigger 5 clockwise about the second pivot axis and may also provide a force to rotate the trigger 5 counterclockwise about the second pivot axis when the relative rest state is broken by an external force.

After the slide release mechanism is released, as the seat moves forward, the trigger 5 passes over the first and second stop supports 10, 20 in a relatively stationary state without interference, and then its front surface contacts the rear surface 30a of the third stop support 30, and further forward movement drives the trigger 5 to rotate counterclockwise around the second rivet 14 until it contacts the link 2, so that the link 2 is effectively and stably locked by the trigger 5 to maintain the interlock, ensuring that the slide remains released.

As shown in fig. 6, when the seat is moved to the forwardmost position, a flange 51 (see fig. 1) of the trigger 5 hits the fourth catch bracket 40, and the EZE stroke limit is achieved.

As shown in fig. 7, during rearward movement (return) of the seat, the trigger 5 passes over the third stop support 30 without interference, and then its flange 51 comes into contact with the front surface 201 of the second stop support 20, and continued rearward movement drives the trigger 5 to rotate clockwise about the second rivet 14, disengaging from the link 2, thereby releasing the interlock of the link 2. The seat continues to move backward, the rear surface of the stopper 4 strikes the front surface 102 of the first stop bracket 10, and the backward sliding of the seat is restricted so as to avoid striking the third row passenger. In particular, with reference to fig. 8, the front surface 102 of the first catch point support 10, which is gradually raised towards the rear, cooperates with the inclined rear surface of the catch 4.

Returning to fig. 7, an external force acts on the connecting rod 2 to make the connecting rod 2 go back clockwise around the first rivet 13, and the slide rail unlocking mechanism is driven, so that the slide rail has a tendency of locking (the lock plate and the tooth window are in a critical state), but at this time, because the first stop point bracket 10 and the stop block 4 are not separated yet, the seat cannot move backwards, and the slide rail also has no locking condition (10mm first stop). As shown in fig. 9, as the connecting rod 2 retracts counterclockwise, the cam 3 presses the stop 4 to rotate clockwise around the second rivet 14, the stop is separated from the first stop point bracket 10, the first stop point bracket is restored to the design position, the seat only needs to move backwards for a short displacement (within 10 mm), and the slide rail can be locked at the set memory position.

As shown in fig. 10 to 11, the cam 3 'of the fixed point return mechanism integrated with the holding function according to another preferred embodiment of the present invention is integrated on the side surface of the link 2', and the other parts which are the same as those of the previous embodiment will not be described again. The function of the connecting rod 2 'is realized by finely punching the profile of the cam 3', so that the number of parts and the assembly process can be reduced, the structural space can be reduced, and the product cost can be 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 retention integrated fixed point return mechanism comprising a base, a linkage rotatably coupled to the base about a first pivot axis, a cam fixed relative to the linkage, a stop rotatably coupled to the base about a second pivot axis and engaging the cam in a first plane, and a trigger rotatably coupled to the base about a second pivot axis and engaging the linkage in a second plane.

2. The fixed point return mechanism of claim 1 further comprising a coil spring for actuating the stop and a bi-directional spring for actuating the trigger, the coil spring having opposite ends connected to the stop and the base, respectively, and opposite ends connected to the trigger and the base, respectively.

3. The fixed point return mechanism of claim 2 wherein, in the design position, the stop is held relatively stationary by the cam and coil spring together and the trigger is held relatively stationary by the bi-directional spring.

4. The fixed point return mechanism of claim 1 wherein the stop is fixedly connected to a stop pin, the base has a kidney-shaped stop hole, and the stop pin is inserted into the stop hole and fits therein to limit the limit of rotation of the stop about the second pivot axis.

5. The set point return mechanism of claim 1 wherein the base includes a first cover plate, a second cover plate, a first rivet and a second rivet, wherein the first cover plate and the second cover plate are spaced apart from each other to sandwich the link, the cam, the stop and the trigger, the first rivet defining the first pivot axis and the second rivet defining the second pivot axis are spaced apart from each other, the first rivet and the second rivet are connected at opposite ends to the first cover plate and the second cover plate, respectively, the link is rotatably disposed on the first rivet, and the stop and the trigger are rotatably disposed on the second rivet, respectively.

6. A car seat, characterized in that it comprises an integrated retention function fixed point return mechanism according to any one of claims 1-5.

7. The vehicle seat of claim 1, comprising a first stop support, wherein the stop is pivoted about the second pivot axis during forward movement of the seat to clear the first stop support, and wherein the stop impacts the first stop support during rearward movement of the seat for fixed point return.

8. The vehicle seat of claim 1, comprising a third gear point bracket against which the trigger impacts to rotate from the design position to the interlock position with the link during forward movement of the seat, the trigger passing over the third gear point bracket without interference during rearward movement of the seat.

9. The vehicle seat of claim 8, including a second stop support between the first stop support and the third stop support, the trigger passing over the second stop support without interference during forward movement of the seat, the trigger impacting the second stop support during rearward movement of the seat to rotate it from the interlocked position with the linkage to the design position.

10. The vehicle seat of claim 1, comprising a fourth gear point bracket, wherein the trigger strikes the fourth gear point bracket during seat advancement to define the forward-most position.