Turnover mechanism suitable for horizontally putting down automobile seat backrest

Abstract

The utility model discloses a turnover mechanism suitable for horizontally putting down an automobile seat backrest, which comprises a backrest mounting bracket, an inner side fixing bracket and an outer side fixing bracket, a reinforcing plate is adaptively mounted on the backrest mounting bracket, an extending rotating shaft is fixedly mounted on the side surface of the backrest mounting bracket, and the rotating shaft is fixedly mounted on the outer side of the backrest mounting bracket. The other end of the rotating shaft and the inner side fixing support are fixedly installed, the end of the rotating shaft is in threaded connection with a coaxial bolt, the bolt penetrates through the outer side fixing support and is movably connected with the outer side fixing support, the inner side fixing support and the outer side fixing support are provided with a torsion spring a and a torsion spring b which are connected to the bolt in a sleeved mode, and the diameter of the torsion spring a is larger than that of the torsion spring b. The outer side fixing support is driven by the torsion spring a and the torsion spring b to reset after being turned over relative to the inner side fixing support. The utility model is suitable for completely and horizontally putting down three rows of automobile seat backrests, increases the space of a luggage compartment, adopts a high-strength plate skeleton structure, has low stamping manufacturing cost, adopts a torsion spring recovery mechanism, improves the comfort feeling of passengers, and has lower cost than an electric mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile seats, in particular to a turning mechanism suitable for horizontally folding down a backrest of an automobile seat. Background Art

[0002] With the development of automotive technology, the demand for space in vehicles is increasing. This means achieving greater utilization within limited space to meet users' demands for greater interior space. Customers are also increasingly demanding greater luggage compartment volume, and they desire more space. However, existing technologies lack a flip mechanism that can fold seats flat. Utility Model Content

[0003] The purpose of the utility model is to provide a flip mechanism suitable for horizontally folding down a car seat backrest, so as to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a flipping mechanism suitable for horizontally folding down a car seat back, comprising a backrest mounting bracket, an inner fixing bracket and an outer fixing bracket, the backrest mounting bracket being adapted to be mounted with a reinforcing plate, the side of the backrest mounting bracket being fixedly mounted with a protruding rotating shaft, the other end of the rotating shaft being fixedly mounted to the inner fixing bracket, the end of the rotating shaft being threaded with a coaxial bolt, the bolt passing through the outer fixing bracket and being movably connected thereto, the inner fixing bracket and the outer fixing bracket being provided with a torsion spring a and a torsion spring b sleeved on the bolt, the diameter of the torsion spring a being larger than the diameter of the torsion spring b, and the outer fixing bracket being driven to reset by the torsion springs a and b after being flipped relative to the inner fixing bracket.

[0005] Preferably, the reinforcing plate, the backrest mounting bracket, the inner fixing bracket and the outer fixing bracket are all formed by sheet metal stamping and bending.

[0006] Preferably, the torsion spring b is located in the inner cavity of the torsion spring a, a cylindrical shaft support a is provided between the torsion spring b and the torsion spring a, the shaft support b is installed on the side of the inner fixed support, and the shaft support b constrains the outer side of the torsion spring a.

[0007] Compared with the prior art, the beneficial effects of the present invention are: the present invention is suitable for completely horizontally folding down the backrests of three-row automobile seats, increasing the luggage compartment space, adopting a torsion spring recovery mechanism to improve passenger comfort, and having a lower cost than an electric mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0009] Figure 2 It is a schematic diagram of the explosion structure of the utility model.

[0010] In the figure: 1. Reinforcement plate; 2. Back mounting bracket; 3. Rotating shaft; 4. Inner fixing bracket; 5. Shaft bracket b; 6. Torsion spring a; 7. Torsion spring b; 8. Outer fixing bracket; 9. Bolt; 10. Shaft bracket a. DETAILED DESCRIPTION

[0011] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0012] See also Figure 1-2 The present invention provides a technical solution: a flip mechanism suitable for horizontally folding a car seat backrest, comprising a backrest mounting bracket 2, an inner fixing bracket 4, and an outer fixing bracket 8. The reinforcing plate 1, backrest mounting bracket 2, inner fixing bracket 4, and outer fixing bracket 8 are all formed by sheet metal stamping and bending, and are each provided with mounting holes. The reinforcing plate 1 is adapted to be mounted on the backrest mounting bracket 2. A protruding rotating shaft 3 is fixedly mounted on the side of the backrest mounting bracket 2, and the other end of the rotating shaft 3 is fixedly mounted to the inner fixing bracket 4. The reinforcing plate 1, backrest mounting bracket 2, and inner fixing bracket 4 are used to connect to the seat back, and the outer fixing bracket 8 is used to connect to the sheet metal of the vehicle body.

[0013] A coaxial bolt 9 is screwed onto the end of the rotating shaft 3. Bolt 9 extends through the outer fixing bracket 8 and is movably connected thereto. Torsion springs a6 and b7 are mounted on the inner and outer fixing brackets 4 and 8, respectively, and are sleeved around bolt 9. The diameter of torsion spring a6 is larger than that of torsion spring b7. When the outer fixing bracket 8 is tilted relative to the inner fixing bracket 4, it is driven back into position by torsion springs a6 and b7. Torsion spring b7 is located within the inner cavity of torsion spring a6. A cylindrical shaft support a10 is located between torsion spring b7 and torsion spring a6. A shaft support b5 is mounted on the side of the inner fixing bracket 4, restraining the outer side of torsion spring a6. When the seat is laid flat and unlocked, torsion springs a6 and b7 drive the seat backrest to tilt upward and return to its original position.

[0014] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tilting mechanism for horizontally folding a car seat back, comprising a backrest mounting bracket (2), an inner fixing bracket (4) and an outer fixing bracket (8), wherein a reinforcing plate (1) is adapted to be mounted on the backrest mounting bracket (2), and characterized in that: A protruding rotating shaft (3) is fixedly installed on the side of the backrest mounting bracket (2), and the other end of the rotating shaft (3) is fixedly installed with the inner fixed bracket (4). The end of the rotating shaft (3) is screwed with a coaxial bolt (9), and the bolt (9) passes through the outer fixed bracket (8) and is movably connected thereto. The inner fixed bracket (4) and the outer fixed bracket (8) are provided with a torsion spring a (6) and a torsion spring b (7) sleeved on the bolt (9). The diameter of the torsion spring a (6) is larger than the diameter of the torsion spring b (7). After the outer fixed bracket (8) is flipped relative to the inner fixed bracket (4), it is driven to reset by the torsion spring a (6) and the torsion spring b (7).

2. The flip mechanism for horizontally folding a car seat back according to claim 1, characterized in that: The reinforcing plate (1), the backrest mounting bracket (2), the inner fixing bracket (4), and the outer fixing bracket (8) are all formed by sheet metal stamping and bending.

3. The flip mechanism for horizontally folding a car seat back according to claim 2, characterized in that: The torsion spring b (7) is located in the inner cavity of the torsion spring a (6), and a cylindrical shaft bracket a (10) is provided between the torsion spring b (7) and the torsion spring a (6). The side of the inner fixed bracket (4) is installed with a shaft bracket b (5), and the shaft bracket b (5) constrains the outer side of the torsion spring a (6).

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