Seat backrest overturning unlocking device

Abstract

The utility model belongs to the technical field of seats, and particularly relates to a seat backrest overturning unlocking device which comprises a seat backrest support and an angle adjuster, an upper connecting plate is welded to the lower portion of one side wall of the seat backrest support, and the angle adjuster is installed on the upper connecting plate. A rocker arm is hinged to the middle of the side wall of the seat backrest support on the same side of the upper connecting plate, one end of a drawstring is fixed to the end of the rocker arm, and the other end of the drawstring is connected to the upper corner of the seat backrest support on the same side of the upper connecting plate in a sliding mode. One end of the pull wire is fixed in the middle of the rocker arm, the other end of the pull wire is connected to the unlocking support of the angle adjuster, and the other end of the pull belt is pulled to drive the unlocking support of the angle adjuster to rotate through the rocker arm and the pull wire so as to unlock the angle adjuster. The unlocking and angle adjusting device is suitable for unlocking and angle adjusting of the seat angle adjuster of the compact type vehicle.

Description

Technical Field

[0001] This utility model belongs to the field of seat technology, and in particular relates to a seat back flip-up unlocking device. Background Technology

[0002] The existing seat back adjuster unlocking technology has the following drawbacks:

[0003] Inconvenient to operate: Traditional unlocking mechanisms mostly use buttons or knobs, which require two hands or force to be applied at a specific angle.

[0004] Complex structure: The unlocking component requires an additional bracket, which occupies space inside the seat.

[0005] High cost: The combination of multiple components leads to complex assembly processes and high production costs.

[0006] Insufficient reliability: Inaccurate control of the cable travel can easily lead to unlocking failure. Summary of the Invention

[0007] The purpose of this invention is to provide a seat back flip-up unlocking device that is simple in structure, low in production cost, easy to operate, and highly reliable.

[0008] The purpose of this utility model is to solve the following problem:

[0009] A seat back flip-up unlocking device includes a seat back support and an adjuster. An upper connecting plate is welded to the lower part of one side wall of the seat back support. The adjuster is mounted on the upper connecting plate. A rocker arm is hinged to the middle of the side wall of the seat back support on the same side as the upper connecting plate. One end of a pull strap is fixed to the end of the rocker arm, and the other end is slidably connected to the upper corner of the seat back support on the same side as the upper connecting plate. One end of a pull cable is fixed to the middle of the rocker arm, and the other end is connected to the unlocking bracket of the adjuster. Pulling the other end of the pull strap causes the unlocking bracket of the adjuster to rotate through the rocker arm and the pull cable, thereby unlocking the adjuster.

[0010] As a further optimization of the above technical solution, a fixed bracket is welded to the upper corner of the seat back support, and a pull strap cover is fixed on the fixed bracket. The other end of the pull strap passes through the lower part of the strip hole on the pull strap cover, extends out the upper part, and is provided with a ring handle.

[0011] As a further optimization of the above technical solution, a limiting part is provided on the pull strap above the pull strap cover and below the annular handle to prevent the pull strap from sliding out of the pull strap cover.

[0012] As a further optimization of the above technical solution, a strap fixing bracket is welded to the inner side of the middle of the side wall of the seat back bracket on the same side as the upper connecting plate, and one end of the rocker arm is hinged to the strap fixing bracket by a flat washer and a non-metallic insert hexagonal locking nut.

[0013] As a further optimization of the above technical solution, the angle adjuster also includes an unlocking shaft, and the unlocking bracket is fixed on the unlocking shaft. Pulling the other end of the pull strap sequentially drives the unlocking shaft of the angle adjuster to rotate through the rocker arm, pull line, and unlocking bracket to unlock the angle adjuster.

[0014] As a further optimization of the above technical solution, the unlocking bracket has a U-shaped structure, and the unlocking bracket is connected to the pull cable through a buckle to realize the transmission of the pull cable's movement stroke.

[0015] As a further optimization of the above technical solution, the angle adjuster also includes a lower connecting plate, which is fixed to the seat frame by a lower mounting leg and bolts to enhance the overall stability of the angle adjuster.

[0016] The advantages of this invention compared to the prior art are:

[0017] Ease of use: This utility model can be unlocked by pulling the strap with one hand, adapting to different sitting postures.

[0018] Simplified structure: This utility model eliminates redundant supports, reducing weight by 15% and cost by 20%.

[0019] Improved reliability: This utility model uses a non-metallic insert nut to reduce wear and extend the life to 100,000 cycles (the life of a traditional metal nut is about 50,000 cycles).

[0020] Space adaptability: This utility model is applicable to the unlocking and angle adjustment of seat adjusters in compact vehicles. Attached Figure Description

[0021] Figure 1 This is the front view of this utility model.

[0022] Figure 2 This is the right view of this utility model.

[0023] Figure 3 This is the left view of this utility model. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. See also: Figures 1-3 :

[0025] A seat back flip-up unlocking device includes a seat back support 10 and an adjuster 31. An upper connecting plate 30 is welded to the lower part of one side wall 11 of the seat back support 10. The adjuster 31 is mounted on the upper connecting plate 30. A rocker arm 25 is hinged to the middle of the side wall 11 of the seat back support 10 on the same side as the upper connecting plate 30. One end of a pull strap 23 is fixed to the end of the rocker arm 25, and the other end is slidably connected to the upper corner of the seat back support 10 on the same side as the upper connecting plate 30. One end of a pull wire 27 is fixed to the middle of the rocker arm 25, and the other end is connected to the unlocking bracket 33 of the adjuster 31. Pulling the other end of the pull strap 23 causes the unlocking bracket 33 of the adjuster 31 to rotate through the rocker arm 25 and the pull wire 27, thereby unlocking the adjuster 31.

[0026] As a further optimization of the above technical solution, a fixed bracket 20 is welded to the upper corner of the seat back support 10, and a pull strap cover 21 is fixed on the fixed bracket 20. The other end of the pull strap 23 is inserted through the lower part of the strip hole 22 on the pull strap cover 21, extends out of the upper part, and is provided with a ring handle 28 at the end.

[0027] As a further optimization of the above technical solution, a limiting part is provided on the pull strap 23 above the pull strap cover 21 and below the annular handle 22 to prevent the pull strap from sliding out of the pull strap cover.

[0028] To further optimize the above technical solution, a strap fixing bracket 24 is welded to the inner side of the middle of the side wall 11 of the seat back bracket 10 on the same side as the upper connecting plate 30. One end of the rocker arm 25 is hinged to the strap fixing bracket 24 through a flat washer and a non-metallic insert hexagonal locking nut 26.

[0029] One end of the rocker arm is hinged to the strap fixing bracket 24 via a flat washer and a non-metallic insert hexagonal locking nut 26.

[0030] As a further optimization of the above technical solution, the angle adjuster 31 also includes an unlocking shaft 32, and the unlocking bracket 33 is fixed on the unlocking shaft 32. Pulling the other end of the pull strap 23 sequentially drives the unlocking shaft 32 of the angle adjuster 31 to rotate through the rocker arm 25, the pull wire 27, and the unlocking bracket 33 to unlock the angle adjuster 31.

[0031] As a further optimization of the above technical solution, the unlocking bracket 33 has a U-shaped structure, and the unlocking bracket 33 is connected to the pull wire 27 by a buckle to realize the transmission of the movement stroke of the pull wire 27.

[0032] As a further optimization of the above technical solution, the angle adjuster 31 also includes a lower connecting plate 34, which is fixed to the seat frame by a lower mounting foot and bolts to enhance the overall stability of the angle adjuster 31.

[0033] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that simple substitutions or modifications can still be made to the technical solutions or technical features described in the foregoing embodiments, and these simple substitutions or modifications do not cause the essence of the corresponding technical solutions to deviate from the spirit and substance of the technical solutions of the embodiments of this utility model, and are still within the protection scope of this utility model.

Claims

1. A seat back flip-up unlocking device, comprising a seat back support and an adjuster, wherein an upper connecting plate is welded to the lower part of one side wall of the seat back support, and the adjuster is mounted on the upper connecting plate, characterized in that: A rocker arm is hinged to the middle of the side wall of the seat back bracket on the same side as the upper connecting plate. One end of the pull strap is fixed to the end of the rocker arm, and the other end is slidably connected to the upper corner of the seat back bracket on the same side as the upper connecting plate. One end of the pull line is fixed to the middle of the rocker arm, and the other end is connected to the unlocking bracket of the adjuster. Pulling the other end of the pull strap drives the unlocking bracket of the adjuster to rotate through the rocker arm and the pull line, thereby unlocking the adjuster.

2. The seat back flip-up unlocking device according to claim 1, characterized in that: A fixed bracket is welded to the upper corner of the seat back support, and a pull strap cover is fixed on the fixed bracket. The other end of the pull strap passes through the lower part of the strip hole on the pull strap cover, extends out the upper part, and is provided with a ring handle.

3. The seat back flip-up unlocking device according to claim 2, characterized in that: A limiting part is provided on the pull strap above the pull strap cover and below the annular handle to prevent the pull strap from sliding out of the pull strap cover.

4. The seat back flip-up unlocking device according to claim 1, characterized in that: A strap fixing bracket is welded to the inner side of the middle of the side wall of the seat back bracket on the same side as the upper connecting plate. One end of the rocker arm is hinged to the strap fixing bracket by a flat washer and a non-metallic insert hexagonal locking nut.

5. A seat back flip-up unlocking device according to claim 1, characterized in that: The angle adjuster also includes an unlocking shaft, and the unlocking bracket is fixed on the unlocking shaft. Pulling the other end of the pull strap sequentially drives the unlocking shaft of the angle adjuster to rotate through the rocker arm, pull line, and unlocking bracket to unlock the angle adjuster.

6. The seat back flip-up unlocking device according to claim 1, characterized in that: The unlocking bracket has a U-shaped structure, and the unlocking bracket is connected to the pull cable through a buckle to realize the transmission of the pull cable's movement stroke.

7. A seat back flip-up unlocking device according to claim 1, characterized in that: The angle adjuster also includes a lower connecting plate, which is fixed to the seat frame by a lower mounting leg and bolts to enhance the overall stability of the angle adjuster.

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