CN112248888B

CN112248888B - Backrest unlocking structure

Info

Publication number: CN112248888B
Application number: CN202011188992.7A
Authority: CN
Inventors: 缪霞; 吴国斌; 马晓亮
Original assignee: Yanfeng International Seating Systems Co Ltd
Current assignee: Yanfeng International Seating Systems Co Ltd
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2021-12-17
Anticipated expiration: 2040-10-30
Also published as: CN112248888A

Abstract

The invention relates to a backrest unlocking structure which comprises a base assembly, an unlocking handle, a zipper mounting mechanism, a pull belt and a zipper, wherein the unlocking handle is mounted on the base assembly and can rotate between a non-turning position and a turning position, the zipper mounting mechanism is rotatably mounted on the base assembly, the unlocking handle rotates from the non-turning position to the turning position to drive the zipper mounting mechanism to synchronously rotate, the zipper mounting mechanism rotates under the non-turning position of the unlocking handle independently of the unlocking handle, the pull belt is respectively connected with the base assembly and the zipper mounting mechanism, and the zipper is connected with the zipper mounting mechanism. According to the backrest unlocking structure, the unlocking handle and the pull belt are matched, and the unlocking is realized by sharing one zipper, so that the cost is reduced. On one hand, the unlocking handle is turned up by external force, the zipper mounting mechanism is driven to rotate in one direction, the zipper is driven, and the backrest is unlocked; on the other hand, the pull belt is pulled by external force to drive the zipper mounting mechanism to pull the zipper, so that the backrest is unlocked.

Description

Backrest unlocking structure

Technical Field

The invention relates to an automobile seat, in particular to a backrest unlocking structure.

Background

In the prior art, the shoulder of car seat back is equipped with the handle, and it is connected so that the user in seat the place ahead unblocks the back through first zip with the unblocking piece, and the rear portion of car seat back is equipped with the stretching strap, and it is connected so that the user at seat rear unblock back through the second zip with the unblocking piece. Obviously, the unlocking mode that the handle and the pull belt are independent from each other needs to be provided with two zippers, so that the cost is high.

Disclosure of Invention

In order to solve the problem that the backrest unlocking mode in the prior art is high in cost, the invention provides a backrest unlocking structure.

The backrest unlocking structure comprises a base assembly, an unlocking handle, a zipper mounting mechanism, a pull belt and a zipper, wherein the unlocking handle is mounted on the base assembly and can rotate between an un-turned position and a turned-up position, the zipper mounting mechanism is rotatably mounted on the base assembly, the zipper mounting mechanism is driven to synchronously rotate by the unlocking handle from the un-turned position to the turned-up position, the zipper mounting mechanism rotates under the un-turned position of the unlocking handle independently of the unlocking handle, the pull belt is respectively connected with the base assembly and the zipper mounting mechanism, and the zipper is connected with the zipper mounting mechanism.

Preferably, the unlocking handle has a handle projection, the zipper mounting mechanism has a zipper projection, and the unlocking handle drives the zipper mounting mechanism by the handle projection abutting against the zipper projection during rotation of the unlocking handle from the non-flipped position to the flipped-up position.

Preferably, in the un-flipped position of the unlocking handle, the handle lugs are kept spaced apart from the zipper lugs so that the rotation of the zipper mounting mechanism is independent of the unlocking handle.

Preferably, the base assembly comprises a base and a first pin mounted through the base, the release handle and the zipper mounting mechanism being mounted coaxially around the first pin.

Preferably, the base assembly further comprises a third pin shaft installed through the base, the zipper installation mechanism is provided with an ear plate, and the third pin shaft is connected with the pull belt and the ear plate respectively.

Preferably, the base is provided with an arc-shaped groove, and the third pin shaft is movable in the arc-shaped groove.

Preferably, the backrest unlocking structure further comprises a handle return spring, two ends of which respectively abut against the base assembly and the unlocking handle to provide return elastic force.

Preferably, the backrest unlocking structure further comprises a zipper return spring having two ends respectively connected to the base assembly and the zipper mounting mechanism to provide a return elastic force.

Preferably, the base assembly includes a second pin shaft installed to penetrate through the base, the backrest unlocking structure further includes a fourth pin shaft installed to penetrate through the zipper installation mechanism, and two ends of the zipper return spring are respectively connected to the second pin shaft and the fourth pin shaft.

Preferably, the zipper is connected with an unlocking piece of the automobile seat backrest, the unlocking handle is positioned on the shoulder part of the automobile seat backrest, and the pull belt is positioned on the rear part of the automobile seat backrest.

According to the backrest unlocking structure, the unlocking handle and the pull belt are matched, and the unlocking is realized by sharing one zipper, so that the cost is reduced. Under the first handle unlocking mode, an external force turns up the unlocking handle, the zipper mounting mechanism is driven to rotate in a single direction, the zipper is driven, and the backrest is unlocked; under the second type of pull belt unlocking mode, the pull belt is pulled by external force to drive the zipper mounting mechanism to pull the zipper to unlock the backrest.

Drawings

FIG. 1 is a schematic view of a vehicle seat mounted with a backrest unlocking structure according to a preferred embodiment of the present invention;

FIG. 2 is a schematic structural view of the backrest unlocking structure of FIG. 1 in a design position of the unlocking handle;

FIG. 3 is a schematic structural view of the backrest unlocking structure of FIG. 1 in a flipped-up position of the unlocking handle;

FIG. 4 is a schematic structural view of the backrest unlocking structure of FIG. 1 in an unfolded position of the unlocking handle;

FIG. 5 is an exploded view of the backrest unlocking structure of FIG. 1;

FIG. 6 is a partial cross-sectional view of the backrest unlocking structure of FIG. 1;

fig. 7 is a cross-sectional view of the backrest unlocking structure of fig. 1 in a flipped-up position of the unlocking handle.

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, a backrest unlocking structure a according to a preferred embodiment of the present invention is installed on a backrest of an automobile seat, as shown in fig. 2 to 4, and includes a base assembly 1, an unlocking handle assembly 2, a zipper mounting assembly 3, a pull strap 4, and a zipper 5, wherein the unlocking handle assembly 2 and the zipper mounting assembly 3 are coaxially installed on the base assembly 1 to be rotatable, rotation of the unlocking handle assembly 2 from the design position of fig. 2 to the flipped-up position of fig. 3 drives the zipper mounting assembly 3 to rotate synchronously, rotation of the zipper mounting assembly 3 from the design position of fig. 2 to the flipped-up position of fig. 4 is independent of the unlocking handle assembly 2, the pull strap 4 is connected to the base assembly 1 and the zipper mounting assembly 3, respectively, and the zipper 5 is connected to the zipper mounting assembly 3.

As shown in fig. 5, the base assembly 1 includes a base 11, a first pin 12, a second pin 13 and a third pin 14, wherein, the base 11 connected with the backrest frame comprises two mounting walls 111 and two supporting walls 112, the two mounting walls 111 are parallel and spaced apart by a first distance, the first distance is larger than the second distance, the first pin shaft 12 is installed through the two mounting walls 111, referring to fig. 3, the unlocking handle assembly 2 is installed between the two mounting walls 111 around the first pin shaft 12, the zipper mounting assembly 3 is coaxially installed below the unlocking handle assembly 2 around the first pin shaft 12 and extends into between the two supporting walls 112, the second pin shaft 13 is installed through the two supporting walls 112, the base 11 further comprises a side wall 113 parallel and spaced apart with the supporting walls 112, an arc-shaped groove 14a is correspondingly arranged on one supporting wall 112 and the side wall 113, the third pin 14 connected with the pulling strap 4 is installed through the support wall 112 and the side wall 113 and is movable in the arc-shaped groove 14 a.

As shown in fig. 5, the unlocking handle assembly 2 includes an unlocking handle 21 and a handle return spring 22, wherein the unlocking handle 21 includes two handle mounting blocks 211 spaced apart from each other, the first pin 12 passes through the two handle mounting blocks 211 to realize rotatable mounting of the unlocking handle assembly 2 around the first pin 12, the handle return spring 22 is sleeved on the first pin 12 between the two handle mounting blocks 211, and opposite ends of the handle return spring 22 respectively abut against the base 11 and the unlocking handle 21, thereby providing a return elastic force for the unlocking handle assembly 2.

As shown in fig. 5, the fastener mounting assembly 3 includes a fastener mounting mechanism 31, a fourth pin shaft 32, and a fastener return spring 33, wherein the fastener mounting mechanism 31 connected to the fastener 5 includes two fastener mounting blocks 311 parallel and spaced apart by a third distance and two support blocks 312 parallel and spaced apart by a fourth distance, the third distance is greater than the fourth distance, the first pin shaft 12 passes through the two fastener mounting blocks 311 to realize rotatable mounting of the fastener mounting assembly 3 around the first pin shaft 12, the fourth pin shaft 32 is mounted through the two support blocks 312, one end of the fastener return spring 33 hooks the fourth pin shaft 32 between the two support blocks 312, and the other end of the fastener return spring 33 hooks the second pin shaft 13, see fig. 2, thereby providing a return spring force to the fastener mounting assembly 3. The zipper mounting means 31 further comprises ear plates 313 spaced parallel to the support blocks 312, and the third pin 14 extending from the arc-shaped groove 14a between the two support walls 112 is inserted into the ends of the ear plates 313 for mounting, see fig. 6, thereby achieving the connection of the pull tape 4 to the zipper mounting means 31.

As shown in fig. 1 and 5, the backrest unlocking structure a further includes a cover 6, which is installed above the base assembly 1 to provide a decorative effect of protecting the lower components thereof. It should be understood that fig. 2-4 omit the cover 6 for clarity of illustration of other structures.

As shown in fig. 7, the release handle 21 has a handle projection 212, the zipper mounting mechanism 31 has a zipper projection 314, the zipper mounting mechanism 31 can be carried in one direction by the release handle 21 by the handle projection 212 interfering with the zipper projection 314 during rotation of the release handle 21 about the first pin 12 from the design position of fig. 2 to the flipped-up position of fig. 3, and in the flipped-away position of fig. 2 and 4, the handle projection 212 is spaced apart from the zipper projection 314 such that the movement of the zipper mounting mechanism 31 is independent of the release handle 21.

According to the backrest unlocking structure of the present invention, in the first handle unlocking mode, referring to fig. 3, an external force turns up the unlocking handle 21, which drives the zipper mounting mechanism 31 to rotate, pulls the zipper 5, and unlocks the backrest. Wherein the third pin 14 connected to the fastener mounting means 31 moves backward from the front end of the arc-shaped groove 14a, and the pulling tape 4 is loosely piled up in the corresponding space of the base 11. In the second way of unlocking the pull strap, referring to fig. 4, the pull strap 4 is pulled by external force, and the third pin 14 moves backward from the front end of the arc-shaped groove 14a, so as to drive the zipper mounting mechanism 31 to pull the zipper 5 to unlock the backrest. Wherein, the rotation of the zipper installation mechanism 31 is independent of the unlocking handle 21, and the unlocking handle 21 is always in the non-turned position. Obviously, according to the backrest unlocking structure of the invention, the unlocking handle 21 of the shoulder part of the automobile seat and the pull belt 4 at the rear part are matched and share one zipper 5 to realize unlocking, 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 backrest unlocking structure is characterized by comprising a base assembly, an unlocking handle, a zipper mounting mechanism, a pull belt and a zipper, wherein the unlocking handle is mounted on the base assembly and can rotate between an unturning position and a turning-up position, the zipper mounting mechanism is rotatably mounted on the base assembly, the zipper mounting mechanism is driven to synchronously rotate by the rotation of the unlocking handle from the unturning position to the turning-up position, the zipper mounting mechanism rotates independently from the unlocking handle in the unturning position of the unlocking handle, the pull belt is respectively connected with the base assembly and the zipper mounting mechanism, the zipper is connected with the zipper mounting mechanism, the base assembly comprises a base and a first pin shaft mounted through the base, the unlocking handle and the zipper mounting mechanism are coaxially mounted around the first pin shaft, the base assembly further comprises a third pin shaft mounted through the base, and the zipper mounting mechanism is provided with an ear plate, the third pin shaft is respectively connected with the pull belt and the lug plate, the base comprises two mounting walls which are parallelly spaced for a first distance and two supporting walls which are parallelly spaced for a second distance, the first distance is larger than the second distance, the first pin shaft penetrates through the two mounting walls for mounting, the base further comprises a side wall which is parallelly spaced for the supporting walls, arc grooves are correspondingly formed in the supporting walls and the side walls which are close to the side walls, and the third pin shaft can move in the arc grooves.

2. The backrest unlocking structure according to claim 1, wherein the unlocking handle has a handle projection, and the zipper mounting mechanism has a zipper projection, and the unlocking handle drives the zipper mounting mechanism by the handle projection abutting against the zipper projection during rotation of the unlocking handle from the non-flipped position to the flipped-up position.

3. The backrest unlocking structure according to claim 2, wherein in the non-flipped position of the unlocking handle, the handle projection is kept spaced apart from the zipper projection so that the rotation of the zipper mounting mechanism is independent of the unlocking handle.

4. The backrest unlocking structure as claimed in claim 1, further comprising a handle return spring having both ends abutting against the base assembly and the unlocking handle, respectively, to provide a return elastic force.

5. The backrest unlocking structure as claimed in claim 1, further comprising a zipper return spring having both ends respectively connected to the base assembly and the zipper mounting mechanism to provide the return elastic force.

6. The backrest unlocking structure according to claim 5, wherein the base assembly includes a second pin installed to penetrate through the base, the backrest unlocking structure further includes a fourth pin installed to penetrate through the zipper installation mechanism, and both ends of the zipper return spring are connected to the second pin and the fourth pin, respectively.

7. The backrest unlocking structure of claim 1, wherein the zipper is connected to an unlocking member of the car seat backrest, the unlocking handle is located at a shoulder portion of the car seat backrest, and the pull strap is located at a rear portion of the car seat backrest.