KR200213236Y1 - Shock absorber of car chair - Google Patents

Abstract

The present invention relates to a shock absorber of a vehicle chair mounted on the lower portion of the vehicle chair. In the conventional shock absorber, the elastic force of the spring is constant, and thus the degree of compression of the coil spring is different depending on the weight of the seated person, that is, the load applied to the chair.

Therefore, the subject innovation is the "X" shaped link 20 is mounted between the upper and lower frames 10 and 11 of the rectangular frame shape mounted on the lower part of the chair 1 so that the oil damper 31 and the coil spring ( In the shock absorber is elastically supported by 30, the end of the torsion spring 40 is arranged in the rear of the lower frame 11, the front end is one side of the cam 50 is built in front of the upper frame 10 The car seat is inserted into the guide hole 51, the screw rod 62 of the adjustment lever 60 mounted on the upper frame 10 is screwed to the nut rod 52 arranged on the other side of the cam 50 By configuring the shock absorber, the rotation of the adjustment lever 60 is properly adjusted according to the weight of the torsion spring torsion spring 40 to adjust the strength and elasticity of the elastic force, so that the weight (經), medium ( Torsions with a relatively simple configuration that can absorb vibrations constantly regardless of weight Ring 40 has the advantage that can be used to ease of mounting, even if low, the height between, the upper and lower frame 11 which is mounted on the chair (1) the lower portion of the small-sized vehicle of the so that the installation work is very easy.

Description

Shock absorber of car chair

The present invention relates to a shock absorber of a vehicle chair that is mounted on the lower portion of the vehicle chair to effectively absorb and cushion the shock applied to the chair when driving on a rough road, and to constantly absorb vibration regardless of the weight of the seated person.

In general, a device for absorbing the shock applied to a vehicle chair while driving on a rough road has been proposed. The upper and lower frames mainly supported by the "X" -shaped link are driven by the elastic force of the oil damper and the coil spring. It is designed to mitigate the generated shock.

However, the above-described shock absorber of the vehicle chair is equipped with an "X" -shaped link, an oil damper and a plurality of coil springs between the upper and lower frames. It can be applied if there is room, but it is very difficult to install the shock absorber when the height between the upper and lower frames is low, such as small and medium-sized vehicles.

In addition, in the conventional shock absorber, the elastic force of the spring is constant so that the degree of compression of the coil spring varies depending on the weight of the seated person, that is, the load applied to the chair, and thus it is not possible to maintain an appropriate elastic force according to the weight of the seated person. Could not be absorbed and buffered.

The present invention was devised in view of the above problems, and its purpose is to effectively absorb and cushion the shock applied to the chair when driving on a rough road, and to absorb the vibration constantly regardless of the weight of the seated seat. It is in providing.

Features of the present invention for achieving the above object,

It is mounted on the lower part of the design (1), a pair of "X" shaped link 20 is mounted between the upper, lower frame 10, 11 of the rectangular frame shape, the oil damper 31 and the coil spring (30) In the shock absorber is elastically supported by,

The rear end of the lower frame 11, the end of the torsion spring 40 is twisted both ends of the lower frame 11 is arranged, the front end of the guide hole 51 on one side of the cam 50 is formed in front of the upper frame 10 Inserted into, the nut rod 52 arranged on the other side of the cam 500, the screw rod 62 of the tip of the control lever 60 mounted on the upper frame 10 is screwed to the vehicle chair, characterized in that the screwed It can be achieved by the device.

1 is a front view showing a vehicle chair equipped with the present invention,

2 is a front view of the shock absorber according to the present invention,

3 is a side view of the shock absorber according to the present invention,

4 is a plan view of the shock absorber according to the present invention,

Figure 5 is a perspective view showing the main portion of the shock absorber according to the present invention.

6 is a plan view showing the operation of the torsion spring of the present invention

* Explanation of symbols for main parts of the drawings

1: chair 10: upper frame

11: lower frame 20: link

20a: central axis 21: fixed axis

22: movable shaft 30: coil spring

31: oil damper 40: torsion spring

41: connecting piece 50: cam

50a, 70a, 80a: shaft bolt 51: guide hole

52: nut rod 60: adjustment lever

60a: bracket 61: handle

62: screw rod 70: indicator

71: instrument panel 80: ruled ball

81: locking hole 82: fixing pin

83: spring

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention for achieving the above object in detail as follows.

As shown in Figure 1 to 5,

The present invention is installed in the lower portion of the chair 1 for cars, consisting of an upper frame 10 and a lower frame 11 formed of a rectangular frame body, the lower frame 10, 11 is a pair of "X" "It is connected to the female link 20, the upper frame 10 is configured to be lifted from the lower frame (11).

The link 20 is rotatably mounted about a central axis 20a arranged at an intersection, and each end is fixed to the fixed shaft 21 provided at the front and rear sides of the upper frame 10 and the lower frame 11. And the movable shaft 22 is fixed to the upper frame 10 so that the "X" shaped link 20 can be folded and unfolded.

In addition, the upper and lower frames 10 and 11 are equipped with an oil damper 31 and a coil spring 30 for supporting the upper frame 10 with a constant force by hydraulic pressure, so that the upper frame 10 is elastically elevated. It is a configuration that can be.

The configuration of the present invention made of the above-described configuration is a known technical configuration known.

However, the most important feature in the construction of the present invention is that the torsion spring 40 is bent at both ends of the metal rod is mounted between the upper, lower frames 10, 11 to absorb the shock applied to the upper frame 10 To do so, by rotating the control lever 60 arranged in the upper frame 10, the cam 50 is to be able to adjust the amount of torsion of the torsion spring (40).

That is, the end of the torsion spring 40, which is twisted at both ends, is arranged in the connecting piece 41 arranged behind the lower frame 11, and the front end of the torsion spring 40 is the front of the upper frame 10. It is inserted into the guide hole 51 on one side of the cam 50 arranged on the upper side.

The torsion spring 40 is composed of a vertical portion 40a in which an end portion of the portion parallel to the upper frame 10 is vertically bent upwards of the upper frame 10, and the vertical portion 40a is a guide hole of the cam 50. Fitted with (51). The guide hole 51 is formed to have a long rectangular shape, while the cam 50 is rotated, the vertical portion 40a moves along the guide hole 51 to lie down or erected, and at this time, the torsion spring 40 Torsion force is controlled. And the rear of the torsion spring 40 is composed of the inclined portion 40b, the end of the inclined portion 40b is extended to the lower frame 11 is fitted to the connecting piece 41.

Therefore, when the cam 50 is rotated, the inclination of the vertical portion 40a of the torsion spring 40 is adjusted, and the torsion spring 40 is twisted about the inclined portion 40b and the torsion spring 40 is torsional force. This is regulated.

A shaft bolt 50a is formed in the center of the cam 50, and a nut rod 52 is formed on the other side thereof, and a nut hole penetrating the side surface thereof is drilled.

An adjustment lever 60 having a handle 61 is arranged on the bracket 60a mounted on the front upper surface of the upper frame 10, and a screw rod 62 formed at the tip of the adjustment lever 60. The nut hole of the nut rod 52 is screwed together.

According to the present invention having the above-described configuration, the chair 1 is raised to a constant height by applying a resilient elastic force to continuous vibration or shock by one coil spring 30 mounted vertically between the upper and lower frames 11. The torsion spring (40) mounted on the side adjusts the amount of torsion according to the weight of the seated person to the seated person so that the vibration is constantly absorbed according to the weight and weight of the weight, and the oil damper. 31 is mounted to absorb the momentary repulsive force of the springs to effectively cushion the spring.

In particular, the torsion spring 40 is a simple configuration that can save a large energy and at the same time easy installation work, between the upper and lower frames 11, which are mounted on the lower chair 1 of the small vehicle If the height is low, there is an advantage that can be effectively firewood.

In addition, when the weight of the seated person is heavy and light rotation of the control lever 60 is to adjust the elastic force of the torsion spring 40 is to be able to absorb the vibration constantly.

That is, as shown in Figures 4 to 5, when the knob 61 of the control lever 60 is rotated to the left, the screw rod 62 is rotated to the left while the nut rod 52 screwed thereto is the upper frame Moved to the rear of the (10) and one side of the cam 50 is rotated to the rear left and at the same time the other side of the cam 50 is rotated to the front right of the upper frame (10).

Therefore, the vertical portion 40a of the torsion spring 40 inserted into the rectangular guide hole 51 on the other side of the cam 50 is raised so that the amount of torsion increases, so that the elastic force of the torsion spring 40 is increased. It can effectively support the load of this heavy person and can absorb vibration constantly.

On the contrary, when the control lever 60 is rotated to the right, the operation of the control lever 60 is reversed. The tip of the torsion spring 40 is laid down and the amount of torsion is reduced, so that the elastic force of the torsion spring 40 is weak. It can effectively support the load and absorb vibration constantly.

As such, the present invention that can adjust the strength and weakness of the elastic force of the torsion spring 40 by rotating the control lever 60 to the left and right can appropriately select the elastic force suitable for the weight of the seated person. There is an advantage.

On the other hand, in the upper portion of the upper frame 10 is arranged an instruction piece 70, the center of which penetrates through the shaft bolt 70a, and one end of the instruction piece 70 is arranged on the nut rod 52, and the cam ( 50) is rotated together, the instructions formed on the front end of the indicator piece 70 is moved to the left and right from the front of the instrument panel 71 attached to the front of the upper frame 10 to the instrument panel 71. It is intended to indicate the weight shown.

Therefore, when the adjustment lever 60 is rotated so that the instructions of the indicator piece 70 is located at a point corresponding to the weight of the seated occupant, there is an advantage that an accurate elastic force of the torsion spring 40 can be set.

And, according to the same bar in Figure 2 to Figure 3, the front end of the upper frame 10 is fixed to the shaft bolt (80a), the ruler 80 is supported by the spring 83 is built up, ruler When the locking groove 81 of the 80 is caught by the fixing pin 82 protruding from the front of the lower frame 11, when the driver needs to temporarily stop the function of the shock absorber, the ruler 80 is removed. Rotating down so that the locking groove 81 is caught by the fixing pin 82, the function of the shock absorber is stopped, there is an advantage that can be used in various ways.

According to the present invention as described above, the "X" -shaped link 20 is mounted between the upper and lower frames 10 and 11 of a rectangular frame shape mounted on the lower part of the design 1, thereby providing an oil damper 31. In the shock absorber elastically supported by the coil spring (30) and the lower frame 11, the end of the torsion spring 40 is built up, the front end is built up in front of the upper frame (10) The screw rod 62 of the adjustment lever 60 mounted on the upper frame 10 is inserted into the guide hole 51 of one side of the cam 50, and the nut rod 52 arranged on the other side of the cam 50. By configuring the shock absorber of the vehicle seat screw-coupled, when the adjustment lever 60 is rotated, the amount of torsion spring 40 torsion is appropriately adjusted according to the weight of the seated person so that the strength and weakness of the elastic force is adjusted. I) Absorption of vibration at a constant level regardless of weight and weight. The torsion spring 40 is made of a very easy installation work, because the upper, the lower frame 11 is mounted on the chair 1 of the small vehicle, the advantage that can be easily mounted even when the height between the lower frame (11) There is this.

Claims (2)

Between the upper and lower frames 10 and 11 of the rectangular frame shape mounted on the lower part of the chair 1, an "X" shaped link 20 is mounted on the oil damper 31 and the coil spring 30. In the shock absorber is elastically supported by, The rear end of the lower frame 11, the end of the torsion spring 40 is twisted at both ends of the lower frame 11 is arranged, the front end is a rectangular guide hole 51 on one side of the cam 50 is formed in front of the upper frame 10 The screw rod 62 of the tip of the control lever 60 mounted on the upper frame 10 is screwed into the nut rod 52 installed on the other side of the cam 50 and the cam 50 is rotated. Shock absorber of the vehicle chair, characterized in that the holding force is adjusted while the torsion spring (40) inserted into the guide hole 51 is to be twisted. According to claim 1, The front end of the upper frame 10 is fixed to the shaft bolt (80a) is a ruler 80 is supported by a spring 83 is built, the locking groove of the ruler 80 A cushioning device for a vehicle chair, characterized in that (81) is caught by a fixing pin (82) protruding from the front of the lower frame (11).