Folding hinge for automobile seat

Abstract

The utility model relates to the technical field of seat hinges, and discloses an automobile seat folding hinge which comprises a first injection molding part, a second injection molding part and a spring, protruding strips are fixedly connected to the outer wall of the first injection molding part and the outer wall of the second injection molding part, and a first extension rod is fixedly connected to the left end of the spring. And the right end of the spring is fixedly connected with a second extension rod, and the top of the first extension rod extends into the second injection molding part. Through the design that the first injection molding part and the second injection molding part are both made of plastic materials and the spring is connected between the first injection molding part and the second injection molding part, a traditional metal hinge can be replaced, the inherent defects of the traditional metal hinge are overcome, and the problem that the opening angle stroke of a seat is limited due to the rigidity of the metal hinge is solved; and the structure is light in weight, the purpose of lightweight design can be achieved, and the purpose of increasing the opening and closing angle is achieved through the telescopic characteristic of the spring.

Description

Technical Field

[0001] The utility model relates to the technical field of seat hinges, and in particular to a folding hinge for an automobile seat. Background Art

[0002] Car seats can be divided into split seats and long seats according to their shapes; they can be divided into fixed, detachable and adjustable types according to their functions; they can be divided into single, double and multi-person seats according to the number of passengers. According to the performance of the seats, they have developed from the earliest fixed seats to multi-functional power-adjustable seats, including air cushion seats, electric seats, stereo seats, mental recovery seats, and electronically adjustable seats. Car seats with folding functions will use folding hinges during the installation process.

[0003] A Chinese patent discloses a seat installation and adjustment hinge, with publication number CN210821911U. The technical solution disclosed in the patent document is as follows: it includes a vehicle body floor, a hinge is arranged on the top left side of the vehicle body floor, the hinge includes an upper hinge plate and a lower hinge plate, the left end of the upper hinge plate is movably connected to the top of the lower hinge plate through a pin shaft, the top of the hinge and the top of the vehicle body floor are both provided with sliding rails, the top of the upper hinge plate and the outer wall of the lower hinge plate are both provided with limiting holes, and the outer walls of the vehicle body floor and the sliding rails are both provided with limiting screw holes matching the limiting holes.

[0004] In order to solve the problem of numerous seat installation specifications and difficult production configuration management, the existing technology adopts a method of making the hinge adaptively and automatically adjust according to the different inclination angles of the vehicle body floor. However, there will still be a situation that affects the folding effect of the seat. The hinge is made of metal. Due to the rigidity of the metal hinge itself, the angle travel of the seat opening is limited and it cannot be opened and closed at a large angle. Utility Model Content

[0005] The utility model aims to provide a folding hinge for a car seat, so as to solve the problem in the prior art that the rigidity of the metal hinge itself will lead to the limitation of the opening angle of the seat.

[0006] The utility model provides the following technical solutions: a folding hinge for a car seat, comprising a No. 1 injection molded part, a No. 2 injection molded part and a spring, wherein the outer walls of the No. 1 injection molded part and the No. 2 injection molded part are fixedly connected with raised strips, the left end of the spring is fixedly connected with a No. 1 extension rod, the right end of the spring is fixedly connected with a No. 2 extension rod, the top of the No. 1 extension rod extends to the interior of the No. 2 injection molded part, and the front of the No. 2 extension rod extends to the interior of the No. 1 injection molded part, and convenient disassembly and assembly mechanisms are arranged on both sides of the No. 1 injection molded part and the No. 2 injection molded part. Through the design of the No. 1 injection molded part, the No. 2 injection molded part and the spring, the inherent defects of the traditional metal hinges can be improved, and the purpose of increasing the opening and closing angle can be achieved.

[0007] As a preferred embodiment of the above technical solution, the convenient disassembly and assembly mechanism includes a connecting block and a reference part, the connecting block is fixedly mounted on the outer walls of the No. 1 injection molded part and the No. 2 injection molded part, and a connecting pin hole is opened on the outer surface of the connecting block.

[0008] As a preferred embodiment of the above technical solution, a pin rod is slidably connected to the inner wall of the reference part, the outer wall of the pin rod is movably connected to the inner wall of the connecting pin hole, and a movable bar is fixedly installed on the end of the pin rod. The pin rod is inserted into the inside of the connecting pin hole, so that the connecting block and the reference part are fixedly connected.

[0009] As a preferred embodiment of the above technical solution, a groove is provided on the outer surface of the movable bar, and an iron alloy plate is fixedly installed on the inner wall of the movable bar. The design of the groove makes it easy for the user to manually move the movable bar.

[0010] As a preferred embodiment of the above technical solution, a square sliding frame is fixedly installed on the outer wall of the movable bar, the outer wall of the square sliding frame is slidably connected to the inner wall of the reference part, and an elastic member is fixedly connected to the end of the square sliding frame, and one end of the elastic member away from the square sliding frame is fixedly connected to the inner wall of the reference part. Through the design of the elastic member, the reset elastic force can drive the pin rod to be inserted into the inside of the connecting pin hole.

[0011] As a preferred embodiment of the above technical solution, the convenient disassembly and assembly mechanism also includes a limit arm, which is fixedly mounted on the outer surface of the reference part, and a square groove is provided on the outer wall of the limit arm, and a plug-in rack is movably connected to the inner wall of the square groove. The design of the square groove facilitates the user to movably position the plug-in rack.

[0012] As a preferred embodiment of the above technical solution, a box body is fixedly installed on the inner wall of the plug-in rack, and an electromagnet is fixedly installed on the inner wall of the box body. The electromagnet is movably connected to the adjacent side of the ferroalloy plate. When the electromagnet is energized, the ferroalloy plate can be magnetically attracted, thereby reducing the manpower consumption when replacing the No. 1 injection molded part and the No. 2 injection molded part as a whole.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model adopts a design that both the No. 1 injection molded part and the No. 2 injection molded part are made of plastic materials, and the spring is connected between the No. 1 injection molded part and the No. 2 injection molded part. This design can replace the traditional metal hinge, improve the inherent defects of the traditional metal hinge, and avoid the problem that the rigidity of the metal hinge itself causes the angle travel of the seat to be limited. The structure itself is light in weight and can achieve the purpose of lightweight design. The purpose of increasing the opening and closing angle is achieved through the expansion and contraction characteristics of the spring itself. The process of pre-embedding the No. 1 extension rod and the No. 2 extension rod in the No. 1 injection molded part and the No. 2 injection molded part can reduce one assembly process and enhance the structural reliability of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the utility model;

[0016] Figure 2 This is a structural diagram of the convenient disassembly and assembly mechanism of the utility model;

[0017] Figure 3 for Figure 2 A in the enlarged view;

[0018] Figure 4 It is a structural schematic diagram of the limiting arm of the utility model.

[0019] In the figure: 1. Injection molded part No. 1; 2. Injection molded part No. 2; 3. Raised strip; 4. Spring; 5. Extension rod No. 1; 6. Extension rod No. 2; 7. Convenient disassembly and assembly mechanism; 71. Connecting block; 72. Connecting pin hole; 73. Reference part; 74. Movable strip; 75. Ferroalloy plate; 76. Groove; 77. Pin rod; 78. Square sliding frame; 79. Elastic part; 791. Limiting arm; 792. Square groove; 793. Plug-in frame; 794. Box body; 795. Electromagnet. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0021] like Figure 1As shown, the utility model provides a technical solution: a folding hinge for a car seat, comprising an injection molded part No. 1, an injection molded part No. 2 and a spring 4, the outer walls of the injection molded part No. 1 and the injection molded part No. 2 are fixedly connected with a raised strip 3, the left end of the spring 4 is fixedly connected with a No. 1 extension rod 5, the right end of the spring 4 is fixedly connected with a No. 2 extension rod 6, the top of the No. 1 extension rod 5 extends to the interior of the No. 2 injection molded part 2, and the front of the No. 2 extension rod 6 extends to the interior of the No. 1 injection molded part 1, and convenient disassembly and assembly mechanisms 7 are arranged on both sides of the injection molded part No. 1 and the injection molded part No. 2. The materials of the injection molded part No. 1 and the injection molded part No. 2 are both plastic. With the design of the spring 4, the structure can replace the traditional metal hinge and improve the inherent defects of the traditional metal hinge. The purpose of increasing the opening and closing angle is achieved by the telescopic characteristics of the spring 4 itself. The process of pre-embedded injection molding of the No. 1 extension rod 5 and the No. 2 extension rod 6 in the injection molded part No. 1 and the No. 2 injection molded part 2 can reduce one assembly process and enhance the structural reliability of the product.

[0022] As an implementation method in this embodiment, Figure 2-Figure 4 As shown, the convenient disassembly and assembly mechanism 7 includes a connecting block 71 and a reference member 73. The connecting block 71 is fixedly mounted on the outer walls of the No. 1 injection molded part 1 and the No. 2 injection molded part 2. A connecting pin hole 72 is provided on the outer surface of the connecting block 71. A pin rod 77 is slidably connected to the inner wall of the reference member 73. The outer wall of the pin rod 77 is movably connected to the inner wall of the connecting pin hole 72. A movable bar 74 is fixedly mounted on the end of the pin rod 77. A groove 76 is provided on the outer surface of the movable bar 74. An iron alloy plate 75 is fixedly mounted on the inner wall of the movable bar 74. A square sliding frame 78 is fixedly mounted on the outer wall of the movable bar 74. The outer wall of the square sliding frame 78 is movably connected to the reference member 73. The inner wall of the reference member 73 is slidably connected, and the end of the square sliding frame 78 is fixedly connected with an elastic member 79. The end of the elastic member 79 away from the square sliding frame 78 is fixedly connected to the inner wall of the reference member 73. The user can pull the movable bar 74 from the groove 76, and the square sliding frame 78 will stretch the elastic member 79 to slide on the inner wall of the reference member 73. At the same time, the pin rod 77 will be withdrawn from the inner cavity of the connecting pin hole 72, so that the user can disassemble and replace the No. 1 injection molding 1 or the No. 2 injection molding 2. After the replacement is completed, the reset elastic force of the elastic member 79 can drive the pin rod 77 to reset and plug it into the inner cavity of the connecting pin hole 72 to complete the fixing work.

[0023] As an implementation method in this embodiment, Figure 2-Figure 4As shown, the convenient disassembly and assembly mechanism 7 also includes a limit arm 791, which is fixedly mounted on the outer surface of the reference member 73. A square groove 792 is provided on the outer wall of the limit arm 791, and a plug-in frame 793 is movably inserted on the inner wall of the square groove 792. A box body 794 is fixedly mounted on the inner wall of the plug-in frame 793, and an electromagnet 795 is fixedly mounted on the inner wall of the box body 794. The electromagnet 795 and the adjacent side of the ferroalloy plate 75 are movably connected. Through the design of the plug-in frame 793, the user can limit and insert it on the top of the limit arm 791, and then the electromagnet 795 can be controlled to generate magnetic force, and the ferroalloy plate 75 can be magnetically attracted, so as to promote the overall movement of the movable bar 74, avoid the problem that the user needs to pull the movable bar 74 as a whole, reduce manpower consumption, and further facilitate the user's replacement work.

[0024] Working principle: Since the materials of injection molded part No. 1 and injection molded part No. 2 are both plastic, combined with the design of spring 4, this structure can replace the traditional metal hinge, improve the inherent defects of the traditional metal hinge, and realize the function of increasing the opening and closing angle. If injection molded part No. 1 and injection molded part No. 2 are damaged as a whole, the user can pull the movable bar 74 from the pull groove 76, and then disassemble and replace injection molded part No. 1 and injection molded part No. 2 as a whole, and then loosen the movable bar 74. The reset elastic force of the elastic part 79 can drive the pin rod 77 to reset and plug it into the inner cavity of the connecting pin hole 72 to realize the replacement function.

[0025] The above embodiments are only used to illustrate the technical solution of the present invention, but not to limit it.

Claims

1. A folding hinge for a car seat, comprising a first injection molded part (1), a second injection molded part (2) and a spring (4), characterized in that: The outer walls of the No. 1 injection molded part (1) and the No. 2 injection molded part (2) are both fixedly connected with a raised strip (3); the left end of the spring (4) is fixedly connected with a No. 1 extension rod (5); the right end of the spring (4) is fixedly connected with a No. 2 extension rod (6); the top of the No. 1 extension rod (5) extends to the interior of the No. 2 injection molded part (2); the front of the No. 2 extension rod (6) extends to the interior of the No. 1 injection molded part (1); and convenient disassembly and assembly mechanisms (7) are provided on both sides of the No. 1 injection molded part (1) and the No. 2 injection molded part (2).

2. The folding hinge for a car seat according to claim 1, characterized in that: The convenient disassembly and assembly mechanism (7) comprises a connection block (71) and a reference piece (73); the connection block (71) is fixedly mounted on the outer walls of the first injection molded part (1) and the second injection molded part (2); a connection pin hole (72) is provided on the outer surface of the connection block (71).

3. The folding hinge for a car seat according to claim 2, characterized in that: A pin rod (77) is slidably connected to the inner wall of the reference member (73), the outer wall of the pin rod (77) is movably connected to the inner wall of the connecting pin hole (72), and a movable bar (74) is fixedly mounted on the end of the pin rod (77).

4. The folding hinge for a car seat according to claim 3, characterized in that: A groove (76) is provided on the outer surface of the movable bar (74), and an iron alloy plate (75) is fixedly mounted on the inner wall of the movable bar (74).

5. The folding hinge for a car seat according to claim 4, characterized in that: A square sliding frame (78) is fixedly mounted on the outer wall of the movable bar (74); the outer wall of the square sliding frame (78) is slidably connected to the inner wall of the reference member (73); an elastic member (79) is fixedly connected to the end of the square sliding frame (78); an end of the elastic member (79) away from the square sliding frame (78) is fixedly connected to the inner wall of the reference member (73).

6. The folding hinge for a car seat according to claim 4, characterized in that: The convenient disassembly and assembly mechanism (7) further comprises a limit arm (791), wherein the limit arm (791) is fixedly mounted on the outer surface of the reference member (73), a square groove (792) is provided on the outer wall of the limit arm (791), and a plug-in frame (793) is movably plugged into the inner wall of the square groove (792).

7. The folding hinge for a car seat according to claim 6, characterized in that: A box body (794) is fixedly mounted on the inner wall of the plug-in frame (793), and an electromagnet (795) is fixedly mounted on the inner wall of the box body (794). The electromagnet (795) is movably connected to an adjacent side of the ferroalloy plate (75).

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