Synchronous unlocking device for two side locks of back-row seat backrest framework of vehicle

Abstract

The utility model belongs to the technical field of seats, and relates to a vehicle back row seat backrest framework double-side lock synchronous unlocking device which comprises a vehicle back row seat backrest framework and independent unlocking assemblies arranged on the two sides of the backrest framework, and the unlocking assembly on each side comprises an unlocking drawstring, a first zipper and a backrest lock. A rotatable pulley is arranged in the middle of the backrest framework, one end of each first zipper is connected with an unlocking drawstring, the other end of each first zipper is fixed to a pulley groove, applying force in the clockwise or anticlockwise direction, of the pulley, and two second zippers are fixed to the pulley groove. The other ends of the two second zippers are connected with the backrest lock unlocking connecting parts on the two sides respectively, the pulley can be driven to rotate clockwise or anticlockwise by pulling the unlocking drawstring on any side, and then the backrest locks on the two sides are synchronously driven to be unlocked through the second zippers, and the double-lock unlocking device has the advantages that double locks can be conveniently unlocked by a single person, the structure is simple, the production cost is low, the use is safe and reliable, and the practicability is high. The seat is used for seats.

Description

Technical Field

[0001] The utility model belongs to the technical field of seats, and in particular relates to a device for synchronously unlocking locks on both sides of a backrest frame of a rear seat in a vehicle. Background Art

[0002] At present, in the mainstream models on the market, the backrest locks of the rear integrated backrests are mostly locked to the vehicle body with double-sided backrest locks. When unlocking, it is necessary to simultaneously unlock the two backrest locks on the left and right sides to realize the backrest folding function. This design requires simultaneous unlocking of the left and right sides, that is, one person on the left side is required to unlock the left backrest lock, and one person on the right side is required to unlock the right backrest lock. If there is only one person, it is necessary to press the unlocking device on both sides of the car at the same time to unlock it. This is very inconvenient for people with short arms or who are not convenient to operate both arms at the same time. It may even be impossible to unlock the two backrest locks, and the function of folding the backrest cannot be realized. Summary of the invention

[0003] The utility model aims to provide a mechanism for synchronously unlocking backrest locks on both sides of a vehicle rear seat backrest, so as to solve the problem of inconvenient unlocking of an integral rear seat backrest frame.

[0004] The purpose of the utility model is to solve the problem as follows:

[0005] A synchronous unlocking device for the locks on both sides of a vehicle's rear seat backrest frame comprises a vehicle's rear seat backrest frame and independent unlocking components arranged on both sides of the backrest frame, the unlocking components on each side comprising an unlocking pulley, a first zipper and a backrest lock, a rotatable pulley is arranged in the middle of the backrest frame, one end of each of the first zippers is connected to the unlocking pulley, and the other end is fixed to a pulley groove of the pulley that applies force in a clockwise or counterclockwise direction, two second zippers are fixed to the pulley grooves, and the other ends of the two second zippers are respectively connected to the backrest lock unlocking connecting parts on both sides, and pulling the unlocking pulley on either side can drive the pulley to rotate clockwise or counterclockwise, thereby synchronously driving the backrest locks on both sides to be unlocked through the second zipper.

[0006] As a further optimization of the above technical solution, the backrest frame is an integrated welded assembly.

[0007] As a further optimization of the above technical solution, the unlocking strap, the first zipper, the backrest lock and the second zipper on each side are symmetrically arranged on the backrest frame on both sides of the pulley.

[0008] As a further optimization of the above technical solution, the first zipper and the second zipper are both provided with ropes slidably arranged in a tubular outer shell, the two ends of the rope in the first zipper are respectively connected to the unlocking pull belt and the pulley groove, and the two ends of the rope in the second zipper are respectively connected to the pulley groove and the backrest lock.

[0009] As a further optimization of the above technical solution, one end of the shell of the first zipper is fixed to the fixed part of the unlocking pull belt or the backrest lock shell on that side, and the other end is fixed to the fixed part of the backrest frame between the pulley and the backrest lock on that side.

[0010] As a further optimization of the above technical solution, one end of the shell of the second zipper is fixed to the fixed part of the backrest lock shell, and the other end is fixed to the fixed part of the backrest frame between the pulley and the side backrest lock.

[0011] As a further optimization of the above technical solution, a pulley bracket is fixed to the middle part of the backrest frame, and the pulley is rotatably mounted on the pulley bracket.

[0012] As a further optimization of the above technical solution, the pulley is provided with more than two circles of pulley grooves, the other ends of the two first zippers are respectively fixed on different pulley grooves of the pulley or are simultaneously fixed on one pulley groove of the pulley, and the other ends of the two second zippers are fixed on different pulley grooves of the pulley or are simultaneously fixed on another pulley groove of the pulley.

[0013] As a further optimization of the above technical solution, a pulley return spring is arranged on the pulley bracket, one end of the pulley return spring is fixed on the pulley, and the other end is fixed on the pulley bracket.

[0014] As a further optimization of the above technical solution, the pulley return spring is a torsion spring or a tension spring.

[0015] The utility model solves the problem of inconvenient single-person unlocking and double-locking of an integral rear seat back frame by only adding a pulley and two second zippers. By pulling the unlocking pull strap on either side, the locks on both sides of the vehicle's rear seat back frame can be synchronously unlocked relative to the vehicle body, and the vehicle's rear seat backrest can be folded down at the same time. It has a simple structure, light weight, short processing and installation time, low production cost, safe and reliable use, and is easy to promote and apply to similar seats. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the main structure of the utility model, in which the straight arrow indicates the movement direction of the unlocking drawstring and the rope in the zipper, and the arc arrow indicates the rotation direction of the pulley when the unlocking drawstring is pulled.

[0017] Figure 2 It is a rear view structural schematic diagram of the utility model.

[0018] Figure 3 It is a three-dimensional structural schematic diagram of the utility model.

[0019] Figure 4 It is an exploded schematic diagram of the pulley and its surrounding structures of the utility model.

[0020] Figure 5 yes Figure 2 A-section structure enlarged view.

[0021] Figure 6 It is a schematic diagram of the matching relationship between the pulley, the first zipper and the second zipper of the utility model, wherein the straight arrow indicates the movement direction of the unlocking drawstring and the rope in the zipper, and the arc arrow indicates the rotation direction of the pulley when the unlocking drawstring is pulled. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the accompanying drawings. Figure 1-Figure 6 :

[0023] A synchronous unlocking device for the locks on both sides of a rear seat backrest frame of a vehicle comprises a backrest frame 10 of the rear seat of the vehicle and independent unlocking components arranged on both sides of the backrest frame 10, wherein the unlocking components on each side comprise an unlocking pulley 11, a first zipper 13 and a backrest lock 12, a rotatable pulley 15 is arranged in the middle of the backrest frame 10, one end of each of the first zippers 13 is connected to the unlocking pulley 11, and the other end is fixed to a pulley groove 16 of the pulley 15 that applies force in a clockwise or counterclockwise direction, two second zippers 14 are fixed to the pulley groove 16, and the other ends of the two second zippers 14 are respectively connected to the unlocking connecting parts 17 of the backrest locks 12 on both sides, and pulling the unlocking pulley 11 on either side can drive the pulley 15 to rotate clockwise or counterclockwise, thereby synchronously driving the backrest locks 12 on both sides to be unlocked through the second zipper 14.

[0024] As a further optimization of the above technical solution, the backrest frame 10 is an integrated welded assembly, which facilitates the installation, layout and positioning of the first zipper 13, the second zipper 14 and the pulley 15.

[0025] As a further optimization of the above technical solution, the unlocking strap 11 , the first zipper 13 , the backrest lock 12 , and the second zipper 14 on each side are symmetrically arranged on the backrest frame 10 on both sides of the pulley 15 .

[0026] As a further optimization of the above technical solution, the first zipper 13 and the second zipper 14 are both slidably provided with a rope 18 in a tubular outer shell, and the rope 18 is a steel lock or plastic rope that can be elastically bent and whose axial length is not easily changed. The two ends of the rope 18 in the first zipper 13 are respectively connected to the unlocking pull belt 11 and the pulley groove 16, and the two ends of the rope 18 in the second zipper 14 are respectively connected to the pulley groove 16 and the backrest lock 12.

[0027] As a further optimization of the above technical solution, one end of the shell of the first zipper 13 is fixed to the fixed part 31 of the unlocking pull belt 11 or the shell of the backrest lock 12 on this side, and the other end is fixed to the fixed part 33 of the backrest frame 10 between the pulley 15 and the backrest lock 12 on this side.

[0028] As a further optimization of the above technical solution, one end of the shell of the second zipper 14 is fixed to the fixing part 32 of the backrest lock 12 shell, and the other end is fixed to the fixing part 34 of the backrest frame 10 between the pulley 15 and the side backrest lock 12.

[0029] As a further optimization of the above technical solution, a pulley bracket 19 is fixed to the middle of the backrest frame 10 , the pulley 15 is rotatably mounted on the pulley bracket 19 by bolts 22 , and the nuts 21 of the screw bolts are welded to the pulley bracket 19 .

[0030] As a further optimization of the above technical solution, the pulley 15 is provided with more than two circles of pulley grooves 16, the other ends of the two first zippers 13 are respectively fixed on different pulley grooves 16 of the pulley 15 or are simultaneously fixed on one pulley groove 16 of the pulley 15, and the other ends of the two second zippers 14 are fixed on different pulley grooves 16 of the pulley 15 or are simultaneously fixed on another pulley groove 16 of the pulley 15.

[0031] As a further optimization of the above technical solution, a pulley return spring 20 is provided on the pulley bracket 19 , and one end of the pulley return spring 20 is fixed to the pulley 15 , and the other end is fixed to the pulley bracket 19 .

[0032] As a further optimization of the above technical solution, the pulley reset spring 20 is a torsion spring or a tension spring. Because the unlocking distance of the backrest lock is short, the use of a torsion spring or a tension spring can solve the pulley reset problem. However, the space occupied by the torsion spring is smaller and convenient for layout. When using the torsion spring, the torsion spring is placed in the groove on the back of the pulley 15, one end of the torsion spring is hung on the hanging hole of the pulley 15 through the end hook, and the other end is hung on the hanging hole of the pulley bracket 19 through the end hook. The hook and the hanging hole cooperate to install the pulley reset spring 20 quickly and conveniently, and it is easy to maintain.

[0033] When in use, pulling the unlocking strap 11 on either side can drive the pulley 15 to rotate clockwise or counterclockwise, and then synchronously drive the backrest locks 12 on both sides to unlock through the second zipper 14. After the backrest locks 12 on both sides are unlocked relative to the vehicle body, the backrest of the rear seat of the vehicle can be folded down. Conversely, the backrest is lifted up, and the backrest locks 12 on both sides automatically lock the seat back to the vehicle body.

[0034] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions or technical features described in the aforementioned embodiments can still be simply replaced or modified with similar technologies, and these simple replacements or modifications do not deviate the essence of the corresponding technical solutions from the spirit and substance of the technical solutions of the embodiments of the present invention, and are still within the protection scope of the present invention.

Claims

1. A synchronous unlocking device for the locks on both sides of a rear seat backrest frame of a vehicle, comprising a backrest frame of a rear seat of the vehicle and independent unlocking components arranged on both sides of the backrest frame, wherein the unlocking components on each side include an unlocking pull belt, a first zipper and a backrest lock, and characterized in that: A rotatable pulley is provided in the middle part of the backrest frame, one end of each of the first zippers is connected to the unlocking pulley, and the other end is fixed to the pulley groove of the pulley that applies force in the clockwise or counterclockwise direction, two second zippers are fixed on the pulley groove, and the other ends of the two second zippers are respectively connected to the unlocking connecting parts of the backrest locks on both sides, and pulling the unlocking pulley on either side can drive the pulley to rotate clockwise or counterclockwise, thereby synchronously driving the backrest locks on both sides to be unlocked through the second zipper.

2. The synchronous unlocking device for the two side locks of the rear seat back frame of a vehicle according to claim 1, characterized in that: The backrest frame is an integrated welded assembly.

3. The synchronous unlocking device for the two side locks of the rear seat back frame of a vehicle according to claim 1, characterized in that: The unlocking drawstring, the first zipper, the backrest lock and the second zipper on each side are symmetrically arranged on the backrest frame on both sides of the pulley.

4. The synchronous unlocking device for the two side locks of the rear seat back frame of a vehicle according to claim 1, characterized in that: The first zipper and the second zipper are both provided with ropes slidably in a tubular outer shell, the two ends of the rope in the first zipper are respectively connected to the unlocking pull belt and the pulley groove, and the two ends of the rope in the second zipper are respectively connected to the pulley groove and the backrest lock.

5. The synchronous unlocking device for the two side locks of the rear seat back frame of a vehicle according to claim 4, characterized in that: One end of the shell of the first zipper is fixed to the fixed part of the unlocking pull belt or the backrest lock shell on this side, and the other end is fixed to the fixed part of the backrest frame between the pulley and the backrest lock on this side.

6. The synchronous unlocking device for the two side locks of the vehicle rear seat back frame according to claim 4, characterized in that: One end of the shell of the second zipper is fixed to the fixing part of the backrest lock housing, and the other end is fixed to the fixing part of the backrest frame between the pulley and the side backrest lock.

7. The synchronous unlocking device for the two side locks of the rear seat back frame of a vehicle according to any one of claims 1 to 6, characterized in that: A pulley bracket is fixed to the middle of the backrest frame, and the pulley is rotatably mounted on the pulley bracket.

8. The synchronous unlocking device for the two side locks of the vehicle rear seat back frame according to claim 7, characterized in that: The pulley is provided with more than two circles of pulley grooves, the other ends of the two first zippers are respectively fixed on different pulley grooves of the pulley or are simultaneously fixed on one pulley groove of the pulley, and the other ends of the two second zippers are fixed on different pulley grooves of the pulley or are simultaneously fixed on another pulley groove of the pulley.

9. The synchronous unlocking device for the two side locks of the vehicle rear seat back frame according to claim 7, characterized in that: The pulley bracket is provided with a pulley return spring, one end of the pulley return spring is fixed on the pulley, and the other end is fixed on the pulley bracket.

10. The synchronous unlocking device for the two side locks of the vehicle rear seat back frame according to claim 9, characterized in that: The pulley return spring is a torsion spring or a tension spring.

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