TWM538558U - Inverted insertion type shock absorbing device - Google Patents

Description

Inverted suspension device

This creation relates to a shock absorber, particularly to an inverted thrust absorber.

The shock absorber absorbs the impact of uneven road surface and is widely used in vehicles such as steam locomotives. Shock absorbers can be divided into two types: upright shock absorbers and inverted shock absorbers. Among them, the inverted insert shock absorber is a shock absorber cylinder supported by two bearings fixed to the outer cylinder. The inverted shock absorber has good impact resistance and stability, and is very popular among riders.

However, under long-term use, the damper cylinder in the inverted-type shock absorber can cause uneven wear damage to the bearing, and the gap between the damper cylinder and the bearing on one side becomes large. When the vehicle is running, the gap between the damper cylinder and the bearing causes the inverted shock absorber to emit an abnormal sound, thereby reducing the quality of the driving.

Therefore, the purpose of the present invention is to provide an inverted insert shock absorber that can prevent the wear of the shock absorber from uneven wear of the bearing.

The technical means adopted by the present invention for solving the problems of the prior art provides an inverted insertion type shock absorber comprising: an outer cylinder; a shock absorber cylinder having a damping cylinder and a piston rod for the reduction The outer surface of the cylinder body is coaxially sleeved in the outer cylinder opposite to the inner surface of the outer cylinder, one end of the piston rod is fixed to the lower end of the outer cylinder, and the other end of the piston rod penetrates the reduction a shock cylinder; at least three bearings are disposed between the inner surface of the outer cylinder and the outer surface of the damper cylinder, and are in a telescopic direction of a shock absorber fixed to the inner surface of the outer cylinder Supporting the outer surface of the damper cylinder body at different positions such that the damper cylinder body is slidable relative to the outer cylinder along the expansion and contraction direction of the shock absorber; and an O-ring disposed on the outer cylinder The outer surface of the damper cylinder is tightly sleeved between the inner surface and the outer surface of the damper cylinder, and the two bearings of the at least three bearings are received on both sides of the shock absorber expansion and contraction direction Interposed, the O-ring provides a stable force to the damper cylinder body relative to the radial direction of the outer cylinder Stable slippage between the outer cylinder and the damper cylinder barrel.

In an embodiment of the present invention, an inverted insertion type shock absorber is provided, and the two bearing systems sandwiching the O-ring are disposed adjacent to an upper end of the outer cylinder.

In an embodiment of the present invention, an inverted insertion type shock absorber is provided, and the lengths of the two bearings sandwiching the O-ring are the same.

In an embodiment of the present invention, an inverted insertion type shock absorber is provided, and the lengths of the two bearings sandwiching the O-ring are different.

In an embodiment of the present invention, an inverted insertion type shock absorber is provided, the bearing being a self-lubricating bearing.

Through the technical means adopted by the inverted insertion type shock absorber of the present invention, the O-ring provides a radial force stabilizing force to the damping cylinder body. When the damper cylinder applies uneven thrust to one side of the bearing, the O-ring can provide a stabilizing force against the uneven thrust to offset the uneven thrust, and can avoid the unevenness of the damper to the bearing. The wear is impaired, which in turn extends the life of the inverted shock absorber of the creation.

In addition, compared with the conventional inverted shock absorber, the inverted shock absorber of the present invention additionally fixes at least one bearing to assist the support of the damping cylinder, and can be used for the damping cylinder The body provides a better stabilizing effect.

Embodiments of the present creation will be described below based on Figs. 1 to 3 . This description is not intended to limit the implementation of the present invention, but is one of the embodiments of the present invention.

As shown in FIG. 1 to FIG. 2, a reverse insertion type shock absorber 100 according to the first embodiment of the present invention comprises: an outer cylinder 1; a shock absorbing cylinder 2 having a damper cylinder 21 And a piston rod 22 coaxially sleeved in the outer cylinder 1 so that the outer surface of the damper cylinder 21 faces the inner surface of the outer cylinder 1, and one end of the piston rod 22 is fixed to the lower end of the outer cylinder 1, the piston The other end of the rod 22 penetrates into the damper cylinder 21; at least three bearings 3a, 3b, 3c are disposed between the inner surface of the outer cylinder 1 and the outer surface of the damper cylinder 21, and are fixed The outer surface of the damper cylinder 21 is supported at a different position on the inner surface of the outer cylinder 1 in a shock absorber expansion and contraction direction D, so that the damper cylinder 21 is along the outer cylinder 1 along the expansion and contraction direction D of the shock absorber. Is slidable; and an O-ring 4 disposed between the inner surface of the outer cylinder 1 and the outer surface of the damper cylinder 21 to tightly enclose the outer surface of the damper cylinder 21, and is shock-proof Both sides of the telescopic direction D are sandwiched by two of the bearings 3a, 3b of the at least three bearings 3a, 3b, 3c, and the O-ring 4 provides a radial limit to the damper cylinder 21 with respect to the outer cylinder 1. Stable force Slippage between the outer cylinder 21 fixed to a damping cylinder barrel.

Among them, the reverse insertion type shock absorber 100 is a monotube type of inverted shock absorber, and is generally used for shock absorbers of automobiles. The three bearings 3a, 3b, and 3c disposed between the outer cylinder 1 and the damper cylinder 21 are self-lubricating bearings to maintain low friction characteristics without oil supply. In other embodiments, the bearings 3a, 3b, 3c may be other axial plain bearings. The stabilizing force by which the O-ring 4 provides radial restriction to the damper cylinder 21 is directed to the central axis of the outer cylinder 1 to maintain the damper cylinder 21 in the center of the outer cylinder 1.

When the damper cylinder 21 applies uneven thrust to one side of the bearings 3a, 3b, 3c, the O-ring 4 can provide a stabilizing force against the uneven thrust to offset the uneven thrust, and can avoid shock absorption. The cylinder 2 causes uneven wear damage to the bearings 3a, 3b, 3c, thereby prolonging the service life of the reverse insertion type shock absorber 100.

As shown in Fig. 2, according to the reverse insertion type shock absorbing apparatus 100 of the first embodiment of the present invention, two of the bearings 3a, 3b sandwiching the O-ring 4 are disposed adjacent to the upper end of the outer cylinder 1. In other embodiments, the two bearings sandwiching the O-ring 4 may also be disposed adjacent to the lower end or other position of the outer cylinder 1 to provide a stabilizing force for different positions of the damper cylinder 21.

Among them, the length L1 of the bearing 3a positioned above and the length L2 of the bearing 3b positioned below are different. Compared with the conventional inverted shock absorber, the bearing 3b having a short length is additionally fixed on the inner surface of the outer cylinder 1 of the present embodiment, and the original bearing 3a, 3c and the shock absorbing can be not substantially affected. In the case of the friction between the cylindrical bodies 21, the position of the O-ring 4 is restricted. That is, the length L2 of the bearing 3b is smaller than the length L1 of the bearing 3a. The bearing 3b auxiliary bearing 3a supports the damper cylinder 21, and the effect of stabilizing the damper cylinder 21 is enhanced.

As shown in Fig. 3, the reverse insertion type shock absorber 100a according to the second embodiment of the present invention is entirely similar to the reverse insertion type suspension apparatus 100 of the first embodiment. The difference is that in the second embodiment, the lengths L1, L2 of the two bearings 3a, 3b sandwiching the O-ring 4 are the same. That is, the length L2 of the bearing 3b of the second embodiment is larger than the length L2 of the bearing 3b of the first embodiment. Thereby, in the second embodiment, the bearings 3a, 3b can be provided in a uniform specification to reduce the production cost. In addition to this, the damping cylinder body 21 can be provided with a better stabilizing effect than the first embodiment.

The above description and description are only illustrative of the preferred embodiments of the present invention, and those having ordinary skill in the art may make other modifications in accordance with the scope of the patent application as defined below and the above description, but such modifications are still It is the creative spirit of this creation and is within the scope of this creation.

100‧‧‧Inverted shock absorber
100a‧‧‧Inverted shock absorber
1‧‧‧Outer tube
2‧‧‧damper tube
21‧‧‧Damping cylinder
22‧‧‧ piston rod
3a‧‧‧ bearing
3b‧‧‧ bearing
3c‧‧‧ bearing
4‧‧‧O-ring
D‧‧‧ Shock absorber expansion and contraction direction
L1‧‧‧ length
L2‧‧‧ length

[Fig. 1] is a side sectional view showing an inverted type shock absorber according to a first embodiment of the present invention; [Fig. 2] is a view showing an inverted type shock absorber according to a first embodiment of the present invention A partial side cross-sectional view in the vicinity of the O-ring; [Fig. 3] is a partial side cross-sectional view showing the vicinity of the O-ring of the reverse insertion type shock absorber according to the second embodiment of the present invention.

100‧‧‧Inverted shock absorber

1‧‧‧Outer tube

2‧‧‧damper tube

21‧‧‧Damping cylinder

22‧‧‧ piston rod

3a‧‧‧ bearing

3b‧‧‧ bearing

3c‧‧‧ bearing

4‧‧‧O-ring

D‧‧‧ Shock absorber expansion and contraction direction

Claims (5)

An inverted insertion type shock absorber comprising: an outer cylinder; a damper cylinder having a damper cylinder and a piston rod, the outer surface of the damper cylinder facing the inner surface of the outer cylinder And coaxially sleeved in the outer cylinder, one end of the piston rod is fixed to the lower end of the outer cylinder, and the other end of the piston rod penetrates into the damping cylinder; at least three bearings are disposed on the outer cylinder Between the inner surface and the outer surface of the damper cylinder, and supporting the outer surface of the damper cylinder at different positions fixed to the inner surface of the outer cylinder in the direction of expansion and contraction of the shock absorber, The damper cylinder is slidable relative to the outer cylinder along the expansion and contraction direction of the shock absorber; and an O-ring is disposed between the inner surface of the outer cylinder and the outer surface of the damper cylinder Nesting an outer surface of the damper cylinder, and being sandwiched by two of the at least three bearings on both sides of the shock absorber expansion and contraction direction, the O-ring providing relative to the damper cylinder Stabilizing force in the radial direction of the outer cylinder to stabilize the slip between the outer cylinder and the damper cylinder. The reverse insertion type shock absorber of claim 1, wherein the two bearing systems sandwiching the O-ring are disposed adjacent to an upper end of the outer cylinder. The reverse insertion type shock absorber of claim 1, wherein the lengths of the two bearings sandwiching the O-ring are the same. The reverse insertion type shock absorber of claim 1, wherein the lengths of the two bearings sandwiching the O-ring are different. For example, the reverse insertion type shock absorber of claim 1 wherein the bearing is a self-lubricating bearing.