Electric headrest of seat

Abstract

The utility model discloses a seat electric headrest which comprises a front end headrest, a rear end headrest and an adjusting mechanism, the adjusting mechanism comprises a fixed base and a movable base, the front end headrest is provided with a front end headrest fixing frame, the front end headrest fixing frame is connected with the movable base, the rear end headrest is provided with a rear end headrest fixing frame, and the movable base is connected with the rear end headrest fixing frame. According to the utility model, the push rod of the push rod motor stretches out and draws back to push the front-end headrest to move back and forth, and when the front-end headrest is opened to the maximum position, the photoelectric limiting baffle b is matched with the photoelectric limiting switch to stop the push rod motor from working, so that the front-end headrest is fixed on the fixed base, and the movable base can move along the fixed base. The push rod motor is adopted for driving, the assembling difficulty of the adjusting mechanism is reduced, gears do not need to be assembled, and then the machining cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile seats, in particular to an electric headrest for a seat. Background Art

[0002] The car seat headrest is an adjustable support installed on the car seat, usually located at the top of the seat near the passenger's head. Its main function is to provide support and protection for the passenger's head and neck to reduce cervical fatigue and injury that may be caused by long-term car sitting.

[0003] The prior art discloses an electric headrest, in which the electric adjustment of the headrest forward and backward is achieved by a motor-driven gear transmission, the gear is meshed with a spur rack, and a slider and a guide rail assist in adjusting the headrest forward and backward. However, the gear transmission has a complex mechanical structure and is difficult to assemble. On the other hand, the gear and spur rack have high precision requirements, which makes the gear processing cost high. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides an electric headrest for a seat, comprising a front end headrest, a rear end headrest and an adjustment mechanism, the adjustment mechanism comprising a fixed base and a moving base, the front end headrest is provided with a front end headrest fixing frame, the front end headrest fixing frame is connected to the moving base, the rear end headrest is provided with a rear end headrest fixing frame, the rear end headrest fixing frame is connected to the fixed base, and the moving base can move along the fixed base.

[0005] Preferably: the fixed base includes a rear end headrest fixing panel, a linear guide rail, a photoelectric limit switch, a push rod motor bracket, a push rod motor connecting shaft a and a push rod motor, and the linear guide rail is installed on the rear end headrest fixing panel.

[0006] Preferably, the photoelectric limit switch is installed at one side end of the rear end headrest fixing panel.

[0007] Preferably, the push rod motor bracket is installed at the other side end of the rear end headrest fixing panel, and the push rod motor bracket is connected to the push rod motor through the push rod motor connecting shaft a.

[0008] Preferably: the motion base includes a front headrest mounting panel, a slider, a photoelectric limit baffle a and a photoelectric limit baffle b, a push rod motor connecting shaft b and a push rod motor fixing bracket, the slider is installed on the front headrest mounting panel, and the slider is slidably connected to the linear guide rail.

[0009] Preferably, the photoelectric limit baffle a and the photoelectric limit baffle b are installed on one side of the front headrest installation panel close to the photoelectric limit switch, and the photoelectric limit baffle a and the photoelectric limit baffle b are located on both sides of the photoelectric limit switch.

[0010] Preferably, the push rod motor fixing bracket is installed on one side end of the front headrest mounting panel close to the push rod motor, and the push rod motor fixing bracket is connected to the push rod of the push rod motor through the push rod motor connecting shaft b.

[0011] Preferably, a rear end headrest fixing hole is provided on the rear end headrest fixing panel for installing a rear end headrest fixing frame.

[0012] Preferably, a sleeve is fixed to the bottom end of the rear end headrest fixing panel, and a screw hole is provided in the rear end headrest fixing panel corresponding to the sleeve.

[0013] Preferably, a front headrest fixing hole is provided on the front headrest mounting panel for mounting a front headrest fixing frame.

[0014] Technical effects and advantages of the utility model:

[0015] In the utility model, the front end headrest is pushed back and forth by the extension and retraction of the push rod of the push rod motor. When the front end headrest is opened to the maximum position, the push rod motor stops working through the cooperation of the photoelectric limit baffle b and the photoelectric limit switch. The push rod motor drive reduces the difficulty of assembling the adjustment mechanism, eliminates the need to assemble gears, and thus reduces the processing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the electric headrest of the seat provided in the embodiment of the present application;

[0017] Figure 2 is a side sectional view of an electric seat headrest provided in an embodiment of the present application;

[0018] Figure 3 It is a structural schematic diagram of the adjustment mechanism of the electric headrest of the seat provided in the embodiment of the present application;

[0019] Figure 4 It is a schematic diagram of the installation structure of the push rod motor in the electric headrest of the seat provided in the embodiment of the present application;

[0020] Figure 5 It is a front view of the adjustment mechanism in the electric headrest of the seat provided in the embodiment of the present application.

[0021] In the figure: 1. front headrest; 101. front headrest fixing bracket; 2. rear headrest; 201. rear headrest fixing bracket; 3. front headrest mounting panel; 31. front headrest fixing hole; 4. photoelectric limit baffle a; 5. photoelectric limit switch; 6. photoelectric limit baffle b; 7. slider; 8. linear guide; 9. rear headrest fixing panel; 91. rear headrest fixing hole; 92. sleeve; 10. push rod motor bracket; 11. push rod motor connecting shaft a; 12. push rod motor; 13. push rod motor connecting shaft b; 14. push rod motor fixing bracket; 15. adjustment rod. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific purposes.

[0023] See also Figures 1-2 As shown, in this embodiment, an electric seat headrest is provided, including a front headrest 1, a rear headrest 2 and an adjustment mechanism, the adjustment mechanism including a fixed base and a moving base, the front headrest 1 is provided with a front headrest fixing frame 11, the front headrest fixing frame 11 is connected to the moving base, the rear headrest 2 is provided with a rear headrest fixing frame 201, the rear headrest fixing frame 201 is connected to the fixed base, and the moving base can move along the fixed base, so that a relative displacement is generated between the front headrest 1 and the rear headrest 2, thereby adjusting the position of the front headrest 1 in the horizontal direction.

[0024] See also Figures 3-4 As shown, the fixed base includes a rear end headrest fixing panel 9, a linear guide 8, a photoelectric limit switch 5, a push rod motor bracket 10, a push rod motor connecting shaft a101 and a push rod motor 12, the linear guide 8 is installed on the rear end headrest fixing panel 9, the photoelectric limit switch 5 is installed on one side end of the rear end headrest fixing panel 9, the push rod motor bracket 10 is installed on the other side end of the rear end headrest fixing panel 9, and the push rod motor bracket 10 is connected to the push rod motor 12 through the push rod motor connecting shaft a101.

[0025] Furthermore, a rear end headrest fixing hole 91 is provided on the rear end headrest fixing panel 9 for installing the rear end headrest fixing frame 201 .

[0026] See also Figures 3-4 As shown, the motion base includes a front headrest mounting panel 3, a slider 7, a photoelectric limit baffle a4 and a photoelectric limit baffle b6, a push rod motor connecting shaft b13 and a push rod motor fixing bracket 14, the slider 7 is installed on the front headrest mounting panel 3, the slider 7 is slidably connected to the linear guide rail 8, the photoelectric limit baffle a4 and the photoelectric limit baffle b6 are installed on one side end of the front headrest mounting panel 3 close to the photoelectric limit switch 5, and the photoelectric limit baffle a4 and the photoelectric limit baffle b6 are located on both sides of the photoelectric limit switch 5, the push rod motor fixing bracket 14 is installed on one side end of the front headrest mounting panel 3 close to the push rod motor 12, and the push rod motor fixing bracket 14 is connected to the push rod of the push rod motor 12 through the push rod motor connecting shaft b13.

[0027] Furthermore, a front headrest fixing hole 31 is provided on the front headrest mounting panel 3 for installing the front headrest fixing frame 101 .

[0028] See also Figure 5 As shown, a sleeve 92 is fixed to the bottom end of the rear end headrest fixing panel 9, and a screw hole is opened at the rear end headrest fixing panel 9 corresponding to the sleeve 92, and the sleeve 92 is used to install the adjustment rod 15, and a screw hole is opened at the top end of the adjustment rod 15, and the adjustment rod 15 is installed on the rear end headrest fixing panel 9 by screws.

[0029] The working principle of the utility model is:

[0030] When the front end headrest 1 is opened to the maximum position, the photoelectric limit baffle b6 cooperates with the photoelectric limit switch 5 to stop the push rod motor 12 from working. The push rod motor 12 is driven by the photoelectric limit baffle b6 and the photoelectric limit switch 5, thereby reducing the difficulty of assembling the adjustment mechanism and eliminating the need to assemble gears, thereby reducing the processing cost.

[0031] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.

Claims

1. A seat electric headrest, comprising a front headrest (1), a rear headrest (2) and an adjustment mechanism, characterized in that: The adjustment mechanism comprises a fixed base and a moving base, the front headrest (1) is provided with a front headrest fixing frame (101), the front headrest fixing frame (101) is connected to the moving base, the rear headrest (2) is provided with a rear headrest fixing frame (201), the rear headrest fixing frame (201) is connected to the fixed base, and the moving base can move along the fixed base; The fixed base comprises a rear end headrest fixing panel (9), a linear guide rail (8), a photoelectric limit switch (5), a push rod motor bracket (10), a push rod motor connecting shaft a (11) and a push rod motor (12), and the linear guide rail (8) is installed on the rear end headrest fixing panel (9); The motion base comprises a front headrest mounting panel (3), a slider (7), a photoelectric limit baffle a (4), a photoelectric limit baffle b (6), a push rod motor connecting shaft b (13) and a push rod motor fixing bracket (14); the slider (7) is mounted on the front headrest mounting panel (3), and the slider (7) is slidably connected to a linear guide rail (8).

2. The electric seat headrest according to claim 1, characterized in that: The photoelectric limit switch (5) is installed on one side end of the rear end headrest fixing panel (9).

3. The electric seat headrest according to claim 2, characterized in that: The push rod motor bracket (10) is installed on the other side end of the rear end headrest fixing panel (9), and the push rod motor bracket (10) is connected to the push rod motor (12) via the push rod motor connecting shaft a (11).

4. The electric seat headrest according to claim 1, characterized in that: The photoelectric limit baffle a (4) and the photoelectric limit baffle b (6) are installed on one side of the front headrest installation panel (3) close to the photoelectric limit switch (5), and the photoelectric limit baffle a (4) and the photoelectric limit baffle b (6) are located on both sides of the photoelectric limit switch (5).

5. The electric seat headrest according to claim 4, characterized in that: The push rod motor fixing bracket (14) is installed on one side end of the front headrest mounting panel (3) close to the push rod motor (12), and the push rod motor fixing bracket (14) is connected to the push rod of the push rod motor (12) via the push rod motor connecting shaft b (13).

6. The electric seat headrest according to claim 1, characterized in that: The rear end headrest fixing panel (9) is provided with a rear end headrest fixing hole (91) for installing a rear end headrest fixing frame (201).

7. The electric seat headrest according to claim 6, characterized in that: A sleeve (92) is fixed to the bottom end of the rear end headrest fixing panel (9), and a screw hole is provided in the rear end headrest fixing panel (9) corresponding to the sleeve (92).

8. The electric seat headrest according to claim 1, characterized in that: The front headrest mounting panel (3) is provided with a front headrest fixing hole (31) for mounting a front headrest fixing frame (101).

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