JPS6027717Y2 - Lever shock absorber for load sensing valve - Google Patents

Description

[Detailed description of the invention] The present invention relates to a load sensing valve installed in large vehicles, etc., and more specifically, a shock absorbing device that can prevent damage even if the lever for the load sensing valve is largely displaced. Regarding.

On large trucks, there is a difference in the braking force between the front wheels and the rear wheels.

This difference in braking force varies depending on the loaded weight, so
Usually a load sensing valve is installed (to detect the load amount).

The load amount is usually detected by detecting the distance between the chassis and the axle, which varies depending on the load amount.

Referring to FIG. 1, an axle 1 is provided with a bracket 2, and a link 3 is protruded from the bracket 2.

The chassis 4 is provided with a load sensing valve 5, and the load sensing valve 5 is provided with a lever 6.

A link 3 is connected to an end of the lever 6.

The distance A between the axle 1 and the chassis 4 is relatively displaced depending on the weight of the cargo loaded on the chassis 4.

This relative displacement rotates the lever 6 and adjusts the difference in braking force between the front and rear wheels via the oil in the brake system.

When the vehicle travels on a rough road, the axle 1 may bounce and rebound significantly, and the relative displacement of the distance A may become large.

If the bound or rebound amount H of the axle 1 exceeds the rotation limit of the lever 6, troubles such as the lever 6 breaking will occur.

SUMMARY OF THE INVENTION An object of the present invention is to provide a shock absorbing device for a lever for a load sensing valve, which has a simple structure and is capable of absorbing the amount of excessive bounce of an axle.

FIG. 2 is a sectional view showing an embodiment of the present invention.

The first plate 11 and the second plate 12 are pressed together by a spring 13.

The first plate 11 is configured as one surface of the casing 14 and has an opening 15 in the center.

The rod 16 is inserted through the opening 15 and connected to the second plate 12.
is fixed to.

In a normal state, the rod 16 configured as described above forms a rod integrally with the casing 14, but when a large bending moment is applied to both ends, the rod 16 deforms as shown in FIG. 3.

That is, one end of the second plate 12 compresses the spring 13, and the second plate 12 is inclined with the other end as a starting point.

Therefore, bending force can be absorbed.

The above-mentioned bending action occurs in the upper, lower, and left-right directions of the rod 16, but if the second plate body 12 is made into a disk shape, the bending action occurs in all directions.

FIG. 4 shows a rod sensing valve in which the rod having the above structure is applied.

That is, the casing 14 is fixed to the axle 17, and the lever 19 of the load sensing valve 18 is fixed to the end of the rod 16 via the link 20.

In normal operation, as shown in the figure, the lever 19 rotates in a direction P as the axle 17 moves up and down.

When the axle 17 exceeds the rotation limit of the lever 19, the axle 17 bends between the rod 16 and the casing 14 to absorb the displacement, as shown in FIG.

FIG. 6 shows another embodiment of the present invention, in which the rod 2
The first plate member 22 to which the first plate member 1 is fixed and the second plate member 24, which is one surface of the casing 23, are pressed together on the outside by a tensioning action of a spring 25.

Therefore, one end of the spring 25 is fixed to the rod 21 and the other end is fixed to the casing 23.

Also in this structure, as shown in FIG.
is inclined between it and the second plate body 24 to absorb bending.

The above is only an embodiment of the present invention, and it goes without saying that the present invention is not limited to the above-mentioned embodiment, but includes all structures in which a spring and a plate are used for pressure bonding.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing the operation of a conventional load sensing valve, FIG. 2 is a sectional view showing an embodiment of the main part of the present invention, and FIG. 4 is a schematic diagram showing one embodiment of the present invention, FIG. 5 is a diagram showing the operation of FIG. 4, and FIG. 6 is a sectional view showing another embodiment of the main part of the present invention. FIG. 7 is a diagram showing the operation of the embodiment of FIG. 6. 11: first plate body, 12: second plate body, 13 spring, 14: casing, 16: rod, 17: axle, 18 20-sensing valve, 19 nil lever.

Claims (1)

[Scope of utility model registration request] In a lever for a load sensing valve that rotates by detecting relative displacement between the axle side and the chassis side, the lever is fixed to one of two plates pressed by an elastic body, and the other is attached to the axle side. , or a shock absorbing device for a lever for a load sensing valve, which is characterized by being fixed to the chassis side.