Seat with backward folding headrest function

Abstract

The invention provides a seat with a backward folding headrest function, which is characterized by comprising a seat assembly and a driving device, the seat assembly comprises a headrest and a seat backrest, the headrest is rotatably connected to a headrest rod, the seat backrest comprises a backrest, a frame rod and a backrest support, and the headrest rod is fixed to the backrest support through a first support and a second support; the driving device comprises a folding device and a driving motor, and the driving motor drives the connecting rod to control folding or resetting of the headrest.

Description

Technical Field

[0001] The invention relates to the field of vehicle manufacturing, and in particular to a seat with a rearward folding headrest function. Background Art

[0002] In the one-touch double bed mode of existing vehicles, the front seat backrest needs to be laid flat. However, during the process of the seat backrest automatically rotating backward, the seat headrest will interfere with the rear seat cushion. Therefore, the front seat headrest needs to be manually removed and then the front backrest and the rear seat cushion can be docked, which increases the user's operation steps. Summary of the invention

[0003] In view of the defects in the prior art, the purpose of the present invention is to provide a seat with a rearward folding headrest function. When the vehicle executes the one-touch flattening function, the front seat headrests can be automatically folded behind the backrests. When the front backrests are folded down at any time, the front headrests can be stored under the backrests.

[0004] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions:

[0005] A seat with a rearward folding headrest function, comprising a seat assembly and a drive device;

[0006] The seat assembly includes a headrest and a seat back, the headrest is rotatably connected to the headrest rod, the seat back includes a backrest, a frame rod and a backrest bracket, the headrest rod is fixed to the backrest bracket through a first bracket and a second bracket; the driving device includes a folding device and a driving motor, and the driving motor drives the connecting rod to control the folding or resetting of the headrest.

[0007] Preferably, the folding device includes a positioning block, a gasket, a limit block, a first torsion spring, a second torsion spring, a first rotating shaft, a second rotating shaft and a hook, the positioning block, the gasket, the limit block and the first torsion spring are arranged on the headrest rod, the first rotating shaft is connected to the hook, and the second torsion spring is arranged on the second torsion spring.

[0008] Preferably, the limiting block includes a first limiting block and a second limiting block, the first limiting block cooperates with the hook to achieve an initial fixed state of the headrest, and the second limiting block can rotate under the action of a driving force to drive the headrest to complete folding.

[0009] Preferably, the drive motor is fixed to the backrest via a motor bracket.

[0010] Preferably, a supporting arm is provided on the connecting rod.

[0011] Preferably, the folding device is covered with a shell.

[0012] Preferably, when the headrest is in a folded state, it can be located behind the backrest and be flush with the rear seat.

[0013] Preferably, the drive motor is of a tension type or a thrust type.

[0014] Compared with the prior art, the seat with the rearward folding headrest function provided by the present invention can be flattened backward while the seat headrest is folded backward, and can be stored in the space in front of the rear seat cushion, thereby realizing one-touch triggering of the combination of the second row of seats and the front row of seats, and quickly realizing the reclining chair form. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0016] Figure 1 It is a structural schematic diagram of the headrest in normal use and folded backwards in the embodiment;

[0017] Figure 2 It is a structural schematic diagram of the front seats in a flat state in the embodiment;

[0018] Figure 3 is a schematic diagram of the structure of a seat with a rearward folding headrest function in an embodiment;

[0019] Figure 4 is a schematic diagram of the internal structure of a seat with a rearward folding headrest function in an embodiment;

[0020] Figure 5 is a schematic diagram of the structure of a driving device of a seat with a rearward folding headrest function in an embodiment;

[0021] Figure 6 It is a disassembled schematic diagram of a driving device of a seat with a rearward folding headrest function in an embodiment;

[0022] Figure 7 is a schematic structural diagram of a folding device for a seat with a rearward folding headrest function in an embodiment;

[0023] Description of reference numerals:

[0024] 1- Headrest;

[0025] 2-Headrest rod;

[0026] 3-frame rod;

[0027] 4-Backrest support;

[0028] 5- housing;

[0029] 6- driving motor;

[0030] 7- positioning block;

[0031] 8- Gasket;

[0032] 9- first limit block;

[0033] 10- first torsion spring;

[0034] 11- first bracket;

[0035] 12- second bracket;

[0036] 13- first rotating shaft;

[0037] 14-Hook;

[0038] 15- second rotating shaft;

[0039] 16- second torsion spring;

[0040] 17- second limit block;

[0041] 18-support arm;

[0042] 19-connecting rod;

[0043] 20-Motor bracket. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0045] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0046] It should be noted that similar numbers and letters represent similar items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in the subsequent figures. In addition, all directional indications in this application (such as up, down, left, right, front, back, bottom...) are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the figures). If the specific posture changes, the directional indication will also change accordingly. Furthermore, the descriptions involving "first", "second", etc. in the application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated.

[0047] As shown in the figure, the seat with the function of folding the headrest backward provided in this embodiment includes a seat assembly and a driving device; the seat assembly includes a headrest 1 and a seat back, the headrest rod 2 and the headrest 1 are an integral whole, and the headrest 1 is rotatably connected to the headrest rod 2 and can rotate around the headrest rod 2. The seat back includes a backrest, a frame rod 3 and a backrest bracket 4, and the headrest rod 2 is fixed to the backrest bracket 4 through a first bracket 11 and a second bracket 12; the driving device includes a folding device and a driving motor 6, the driving motor 6 is fixed to the backrest through a motor bracket 20, and the driving motor 6 drives the connecting rod 19 to control the folding or resetting of the headrest 1, and the connecting rod 19 is provided with a support arm 18. Among them, the driving motor 6 can be connected to the power supply through a wiring harness to realize the electric backward folding of the headrest 1. The driving motor 6 is a tension type or a thrust type.

[0048] The seat with the function of folding the headrest backward provided in this embodiment has a folding device including a positioning block 7, a gasket 8, a limiting block, a first torsion spring 10, a second torsion spring 16, a first rotating shaft 13, a second rotating shaft 15 and a hook 14. The positioning block 7, the gasket 8, the limiting block and the first torsion spring 10 are arranged on the headrest rod 2, the first rotating shaft 13 is linked to the hook 14, and the second torsion spring 16 is arranged on the second torsion spring 16. The folding devices are all fixed on the backrest bracket 4, and the folding devices are covered with a shell 5, which has the function of protecting the internal folding devices.

[0049] The seat with a rearward folding headrest function provided in this embodiment includes, as far as the limit blocks are concerned, a first limit block 9 and a second limit block 17. The first limit block 9 cooperates with the hook 14 to achieve the initial fixed state of the headrest 1, and the second limit block 17 can rotate under the action of the driving force to drive the headrest 1 to complete the folding.

[0050] When the drive motor 6 is powered on, the piston rod at one end of the drive motor 6 provides a downward driving force, which drives the second rotating shaft 15 and the second limit block 17 to rotate through the connecting rod 19 and the support arm 18, and the hook 14 rotates around the first rotating shaft 13, and finally the hook 14 is disengaged from the slot of the first limit block 9. Under the torque of the first torsion spring 10, the headrest 1 and the first limit block 9 both rotate around the headrest rod 2 to realize the backward folding function of the headrest 1; when the headrest 1 needs to be restored, it needs to be manually returned to its original position.

[0051] The above describes the specific embodiments of the present invention. Based on the above description, relevant personnel can make various changes and modifications without departing from the technical concept of the present invention.

Claims

1. A seat with a rearward folding headrest function, characterized in that: including a seat assembly and a drive device; The seat assembly includes a headrest and a seat back, the headrest is rotatably connected to the headrest rod, the seat back includes a backrest, a frame rod and a backrest bracket, the headrest rod is fixed to the backrest bracket through a first bracket and a second bracket; the driving device includes a folding device and a driving motor, and the driving motor drives the connecting rod to control the folding or resetting of the headrest.

2. The seat with rearward folding headrest function according to claim 1, characterized in that: The folding device includes a positioning block, a gasket, a limiting block, a first torsion spring, a second torsion spring, a first rotating shaft, a second rotating shaft and a hook. The positioning block, the gasket, the limiting block and the first torsion spring are arranged on the headrest rod, the first rotating shaft is connected to the hook, and the second torsion spring is arranged on the second torsion spring.

3. The seat with rearward folding headrest function according to claim 2, characterized in that: The limiting block includes a first limiting block and a second limiting block. The first limiting block cooperates with the hook to achieve an initial fixed state of the headrest. The second limiting block can rotate under the action of a driving force to drive the headrest to complete folding.

4. The seat with rearward folding headrest function according to claim 1, characterized in that: The driving motor is fixed on the backrest through a motor bracket.

5. The seat with rearward folding headrest function according to claim 1, characterized in that: A supporting arm is arranged on the connecting rod.

6. The seat with rearward folding headrest function according to claim 1, characterized in that: The folding device is covered with a shell.

7. The seat with rearward folding headrest function according to claim 1, characterized in that: When the headrest is in a folded state, it can be located behind the backrest and be flush with the rear seat.

8. The seat with rearward folding headrest function according to claim 1, characterized in that: The driving motor is of a pulling type or a thrust type.

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