KR200293230Y1 - Automatic height adjustable air suspension for car - Google Patents

Abstract

The present invention is mounted on the lower part of the vehicle chair to alleviate the shock applied to the chair when driving on rough roads such as unpaved roads, and maintains the height of the chair appropriately at all times, so that it occurs when driving for a long time or driving on rough unpaved roads. The present invention relates to a cushioning height adjustment device for a vehicle chair that can significantly reduce driver fatigue.

The present invention is mounted on the lower portion of the vehicle chair, the upper and lower frames 10, 11 of the rectangular frame shape is coupled by the 'X' type link 12, the upper and lower frames 10, 11 It is elastically supported by the hydraulic shock absorber 16 and the air spring 15, the air injection pin 28 and the air discharge pin 27 of the air conditioning control valve 21 by the cam 22 is operated to the air compressor In the automatic height adjustment device of the cushioning height of the vehicle chair (1) to inject the air into the air spring (15) or discharge to the outside, the air is provided with the air injection pin 28 and the air discharge pin 27 The control valve 21 is fixed to the support plate 33 of the upper frame 10, the cam 22 and the operating piece 23 is fixed to the fixed shaft (13a) (13b) so as to rotate horizontally, the upper frame ( The control pin 31 fixed to the support plate 33 of the top plate 10 and fixed to the moving shaft 14a of the upper frame 10 is inserted into the pin hole 32 of the operating piece 23, thereby moving the shaft 14. Each time a) moves, the operating piece 23 rotates to rotate the cam 22, and the cam 22 which rotates in the horizontal direction is provided with the air injection pin 28 and the air discharge pin of the air conditioning control valve 21. (27) is configured to be pressurized.

Description

Automatic height adjustable air suspension for car

The present invention is already filed under the same name as the applicant and the inventor of the present invention as Utility Model Registration No. 2001-0025454 and registered as Utility Model Registration No. 256440 in 2001.08.22. The control pin of the chair frame does not directly rotate the cam, but the air injection pin and the air release pin of the air conditioning control valve by the cam which rotates by constituting the operating piece between the cam and the control pin of the chair frame. It is an improved design that prevents wear and prevents the cam from controlling the air conditioner control valve more precisely.

Conventionally, the frame of the chair moving by the impact transmitted to the chair is configured to rotate the cam directly so that the cam pressurizes the air injection pin and the air release pin of the air-conditioning control valve. There was a disadvantage in that the ejection pins were worn and precise control was difficult.

The present invention was developed in view of the conventional problems, and an object of the present invention is to configure the operating piece between the control pin of the cam frame and the chair frame for controlling the air conditioner valve, thereby minimizing the rotational amount of the cam, thereby reducing the wear of the air conditioner Minimizing the height, and providing a height adjustment device for the cushioning of the vehicle chair that can enable the cam to control the air conditioning control valve more precisely.

1 is a partial cross-sectional view of a vehicle chair to which the present invention is applied.

Figure 2 is a perspective view of a buffer height automatic adjustment device for a vehicle chair according to the present invention.

Figure 3a is a front view of the upper and lower frames and links in a neutral state without impact from the outside.

3B is a plan view of the air conditioner control valve, the cam and the operating piece in a neutral state without an impact applied from the outside.

Figure 4a is a front view of the upper and lower frames and links when the height of the chair is lowered by the impact applied from the outside.

4B is a plan view of the air conditioner control valve, the cam and the operation piece when the height of the chair is lowered by the impact applied from the outside.

Fig. 5A is a front view of the upper and lower frames and links when the height of the chair is increased by the impact applied from the outside.

Fig. 5B is a plan view of the air conditioner control valve, the cam and the operation piece when the height of the chair is increased by the impact applied from the outside.

<Code Description of Main Parts of Drawing>

1: chair

2: bellows cover

10: upper frame

11: lower frame

12: link

13a, 13b: fixed shaft

14a, 14b: moving shaft

15: air spring

16: Hydraulic Shobar

17: jamming

18: clasp

19: latch handle

20a, 20b: Information Home

21: air conditioner control valve

22: cam

23: working piece

24: doorway

25: inlet

26 outlet

27 air release pin

28: air injection pin

29a, 29b: fixed shaft

30: Bearing

31: control pin

32: pinhole

33: support plate

The present invention to achieve the above object,

The upper and lower frames 10 and 11 of the rectangular frame shape are joined by an 'X'-type link 12, and the upper and lower frames 10 and 11 are the hydraulic shovel 16 and the air spring 15. It is elastically supported by the air, the air injection pin 28 and the air discharge pin 27 of the air conditioning trawl valve 21 is operated by the cam 22 to inject the air of the air compressor into the air spring (15). In the automatic height adjustment device of the cushioning height of the vehicle chair (1) to be discharged to the outside or to the outside, the air-conditioning control valve 21 formed with the air injection pin 28 and the air discharge pin 27 is the It is fixed to the support plate 33, fixed to the support plate 33 of the upper frame 10 is fixed to the fixed shaft (13a) (13b) so that the cam 22 and the operating piece 23 can rotate horizontally, The control pin 31 fixed to the moving shaft 14a of the frame 10 is inserted into the pinhole 32 of the operating piece 23 so that the operating piece 23 rotates each time the moving shaft 14a moves. Rotating cam (22) And, it consists of a cam 22 which rotates in a horizontal direction to press the air injection pin 28 and the air release pin 27 of the air control valve 21.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a partial cross-sectional view of a vehicle chair 1 to which the present invention is applied.

As shown in the drawing, the upper frame 10 and the lower frame 11 of the rectangular frame shape are connected to the lower part of the vehicle chair 1 by an 'X'-type link 12 to support the chair 1, and the inside thereof. There is an air spring (15) and a hydraulic shock absorber (16) for adjusting the height of the vehicle chair (1) and absorbing shock, and the lower part of the chair (1) configured as described above is bellows for safety and protection of the device. It is covered with a cover 2.

2 is a perspective view of a buffer height automatic adjustment device for a vehicle chair 1 according to the present invention.

2 is a perspective view showing a buffer height adjusting device positioned at the lower part of the vehicle chair 1 to alleviate the shock transmitted to the chair 1 and to adjust the height. The lower frame 11 is connected by an 'X'-type link 12, and therein, an air spring 15 and a hydraulic shovel 16 for mitigating the shock transmitted to the chair 1 and adjusting the height thereof. It is composed.

A support plate 33 is formed on the upper frame 10, and an air conditioner valve 21 is fixed to the bottom of the support plate 33, and a cam 22 that controls the air conditioner valve 21 and drives the same. The operating piece 23 is arranged and fixed to the fixed shafts 13a and 13b of the support plate 33 so as to rotate horizontally.

Due to the shock transmitted to the vehicle chair 1, the height between the upper and lower frames 10 and 11 connected to the 'X'-type link 12 is changed, and accordingly the upper and lower frames 10 and 11 The moving shafts 14a and 14b inserted into the guide grooves 20a and 20b are moved in the left and right directions within the guide grooves 20a and 20b.

The control pin 31 connected to the moving shaft 14a of the upper frame 10 moving in the left and right directions is inserted into the pin hole 32 of the operating piece 23 to rotate and drive the operating piece 23 horizontally. The operating piece 23 having the bearing 30 rotates the cam 22 horizontally, and thus the cam 22 rotates the air injection pin 28 and the air discharge pin 27 of the air conditioning control valve 21. By pressurizing, the amount of air in the air spring 15 is adjusted to adjust the impact relief and height of the chair 1.

Sides of the upper frame 10 and the lower frame 11 is formed with a clasp 18 and a locking projection 17. When the driver turns the clasp handle 19 and hangs the clasp 18 on the locking projection 17, The upper frame 10 and the lower frame 11 is fixed so as not to move the cushion height adjustment device of the chair may not be used.

3A is a front view of the upper and lower frames and links in a neutral state with no impact applied from the outside, and FIG. 3B is a plan view of the air conditioner control valve, cam and operating piece in a neutral state without impact applied from the outside.

3A to 3B, when there is no impact applied to the vehicle chair 1 from the outside, the cam 22 does not pressurize the air injection pin 28 and the air discharge pin 27 of the air conditioner control valve 21. In this state, the pressure of the air inside the air spring 15 is kept constant.

Figure 4a is a front view of the upper and lower frames and links when the height of the chair is lowered by the impact from the outside, Figure 4b is an air conditioning control valve when the height of the chair is lowered by the impact from the outside, Top view of cam and working piece.

4A to 4B show a state in which the chair 1 is lower than the height of the neutral state due to an impact applied from the outside, wherein the 'X'-type link 12 is the guide groove 20a of the upper frame 10. In the slide), the control pin 31 to rotate the operating piece (23).

The operating piece 23 rotated by the control pin 31 rotates the cam 22, and the cam 22 presses the air injection pin 28 of the air conditioner control valve 21 to open the air spring 15. The air pressure of the raise the height of the chair (1) lowered by the external impact.

At this time, the bearing 30 is formed on one side of the operating piece 23 in contact with the cam 22 to reduce the friction between the cam 22 and the operating piece 23 to rotate the cam 22 more smoothly and accurately. give.

Figure 5a is a front view of the upper and lower frames and links when the height of the chair is increased by the impact from the outside, Figure 5b is an air conditioning control valve when the height of the chair is increased by the impact from the outside, Top view of cam and working piece.

5A to 5B show a state in which the chair 1 is higher than the height of the neutral state due to an impact applied from the outside, wherein the 'X'-type link 12 is the guide groove 20a of the upper frame 10. In the slide) and the control pin 31 to rotate the operating piece (23).

The operating piece 23 rotated by the control pin 31 causes the cam 22 to rotate, and the cam 22 presses the air release pin 27 of the air conditioning control valve 21 to thereby release the air spring 15. By lowering the internal air pressure lowers the height of the chair (1) raised by the external impact.

As described above, the cushion height adjustment device of the vehicle chair 1 according to the present invention alleviates the impact applied from the outside, and maintains the height of the chair 1 constantly changed by the impact applied from the outside at all times. Zooming can reduce driver and passenger fatigue.

As described above, according to the present invention, the chair as a cushion height automatic adjustment device of the vehicle chair 1 that can adjust the height of the chair 1 to alleviate the shock transmitted to the vehicle chair 1 when the vehicle is driving on a rough road. It is designed to get more comfortable ride by effectively alleviating the shock transmitted to 1) and keeping the height of chair always constant.

In particular, the control pin 31 does not rotate the cam 22 directly, but rather constitutes the operating piece 23 between the control pin 31 and the cam 22 so that the cam 22 more accurately adjusts the air conditioning control valve 21. ), The air injection pin 28 and the air discharge pin 27 can be pressed, and the cam 22 and the air conditioner control valve 21 are not worn even when used for a long time.

Claims (1)

As mounted on the lower part of the vehicle chair, the upper and lower frames 10 and 11 having a rectangular frame shape are joined by an 'X'-type link 12, and the upper and lower frames 10 and 11 are hydraulic shovels. It is elastically supported by the 16 and the air spring 15, the air injection pin 28 and the air discharge pin 27 of the air conditioning control valve 21 is operated by the cam 22 to operate the air of the air compressor. In the automatic height adjustment device of the cushioning height of the vehicle chair (1) to be injected into the air spring (15) or discharged to the outside, An air conditioning control valve 21 having an air injection pin 28 and an air discharge pin 27 is fixed to the support plate 33 of the upper frame 10, The cam 22 and the operating piece 23 are fixed to the support shaft 33 of the upper frame 10 is fixed to the fixed shaft (13a) (13b) so that the horizontal rotation, The control pin 31 fixed to the moving shaft 14a of the upper frame 10 is inserted into the pin hole 32 of the operating piece 23 so that the operating piece 23 is moved whenever the moving shaft 14a moves. Rotate the cam 22, Cam 22 rotating in the horizontal direction is configured to pressurize the air injection pin 28 and the air discharge pin 27 of the air conditioning trawl valve 21, the height of the cushioning device for a vehicle chair.