JPH0542641Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a cable dust cover of a variable stabilizer in a vehicle suspension system.

(Prior art) In FIG. 5, symbols 50 and 51 are links 52
shows a pair of actuated members connected to each other. A control cable 53 is connected to the link 52.
A stopper 55 fixed to the end of the inner cable 54 is engaged. The control cable 53 is composed of an inner cable 54 and an outer cable 56 that slidably guides the inner cable 54. A bellows-shaped cable dust cover 57 is provided between the end of the outer cable 56 and the exposed inner cable 54. This cable dust cover 57 prevents dirt, water droplets, etc. from entering between the outer cable 56 and the inner cable 54 from the end 53a of the control cable 53.

There is no technology available to change the characteristics of the stabilizer using a hydraulic cylinder.

(Problems to be Solved by the Invention) The conventional cable dust cover prevents foreign matter from entering the control cable, and when preventing foreign matter from entering the actuated members 50 and 51, It is necessary to prepare a dust cover separate from the cable dust cover 57. Therefore, there are problems in that the number of parts increases and the number of man-hours increases.

In particular, when using hydraulic pressure to change the spring constant of a suspension stabilizer that is placed in a harsh environment with dirt and dust, foreign matter may not enter the moving parts of the valve that controls the hydraulic pressure of the hydraulic cylinder or the control cable. There is a problem in that it becomes a major obstacle to accurate operation.

(Means for solving the problem) The present invention aims to provide a cable dust cover that can prevent foreign matter from entering the movable part of a variable stabilizer with a simple structure. The control cable is made up of a cylindrical body having an opening at one end that is fitted and connected to the control cable, and an opening at the other end that is fitted and connected to the flange formed on the cap that guides the push rod. It is made of an elastic material that surrounds an inner control cable located between the outer end and the cap.

(Function) When the opening at one end is fitted to one end of the control cable outer to connect them, and the opening at the other end is fitted to the cap to connect them, the control cable is positioned between the end of the control cable outer and the cap. The inner is surrounded.

(Example) Hereinafter, the present invention will be explained in detail based on the illustrated example.

First, in Fig. 4, to briefly explain the outline of the variable stabilizer, the lower arm 1 of the suspension arms of the strut type suspension.
One end 2a of the stabilizer bar 2 (only one of which is shown) is connected to the stabilizer bar 2 via a hydraulic cylinder 3. Specifically, a lower part 3a of the hydraulic cylinder body is connected to a lower arm, and a piston rod 3b slidably fitted into the cylinder body is connected to one end of the stabilizer bar 2 via a ball joint 3c. The other end (not shown) of the stabilizer bar 2 is connected to the other lower arm (not shown) via a link. As shown in FIG. 1, the hydraulic cylinder 3 has the following functions: by controlling the flow of oil stored in the cylinder,
A hydraulic control valve 4 for controlling hydraulic pressure is integrally formed. Hydraulic control valve 4
One end of the control cable 5 is connected to. The other end (not shown) of the control cable 5 is connected to an actuator (not shown).

In FIGS. 1 and 3, the control cable 5 includes a control cable outer 5a,
It consists of a control cable inner 5b that is slidably guided therein. One end 5c of the control cable outer 5a is passed through and fixed to a bracket 6 whose base end 6a is fixed to the outer wall 7a of the valve body.

In FIG. 2, an example of the hydraulic control valve 4 will be explained. The valve body 7, which is provided integrally with the hydraulic cylinder 3, has a push rod 8.
is slidably inserted. A spring seat 8a is formed on this push rod 8 and receives one end of a return spring 9. The other end of the return spring 9 is received by a cap 10 that is fitted into the push rod 8 and screwed onto the valve body 7. The cap 10 slidably guides the push rod 8. Also, cap 1
0, when this is screwed into the valve body 7,
A gap 10a for attaching the cover between the outer wall 7a and the outer wall 7a.
A flange portion 11 is formed. A sleeve 14 that separates the oil passages 12 and 13 is fitted into the valve body 7, and a valve seat 14a is formed in the sleeve. A valve 16 , which is biased by a return spring 15 weaker than the return spring 9 , is inserted into the sleeve 14 . The oil passage 12 communicates with a piston upper chamber (not shown) of the hydraulic cylinder 3, and the oil passage 13 communicates with a piston lower chamber (not shown) via a reservoir tank (not shown). In the valve position shown in FIG. 2, the oil passages 12 and 13 are in communication, so a piston (not shown) in the cylinder can move up and down according to the roll of the vehicle body, and the lower arm 1 and stabilizer bar The spring constant is changed by changing the length between the spring and the one end 2a.

In the illustrated embodiment, valves of identical construction are arranged one above the other. Each push rod 8,8 protrudes from the cap 11. The protruding ends 8 of these pushrods
b, 8b are integrated with each other by a link 17. The link 17 has a stopper 1 fixed to one end 5d of the control cable inner 5b.
8 are engaged and connected. A circumferential groove 5d is formed in one end portion 5c of the control cable outer.

In FIG. 1, a cable dust cover 19 is disposed between the valve outer wall 4a and the bracket 6. As shown in FIG. The cable dust cover 19 is
As shown in the figures and FIG. 3, it consists of a cylindrical body with an oval cross section, and is made of an elastic material such as rubber or a rubber-like material. Cable dust cover 19
is a gap 1 between the opening 19a at one end that is tightly fitted into the circumferential groove 5e of the control cable outer, and the flange portions 11, 11 of the two caps and the outer wall 4a.
0a, and an opening 19b at the other end that tightly fits into the opening 19b. Each opening is tightened and fixed by tightening members 20, such as wires or bands. This allows pushrod 8 and cap 1 to
0 and the gap B between the control cable inner 5d and the control cable outer 5a are covered with one dust cover 19.

If the thickness of the other end opening 19b is set to such an extent that it can fit into the gap 10a by being lightly pressed, the opening and the outer wall 4a will be in close contact with each other, thereby increasing the sealing effect.

(Effects of the invention) As described above, according to the cable dust cover of the invention, since the cable dust cover covers the space between the end of the control cable outer and the cap that guides the push rod, it protects the cable from dirt and dust. Multiple dust-proof parts of variable stabilizers that are placed in harsh environments can be covered with a single part, and fewer assembly steps are required.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a hydraulic cylinder equipped with the cable dust cover of the present invention, Fig. 2 is a longitudinal sectional view showing an embodiment of the invention, Fig. 3 is a plan sectional view of the same, and Fig. 4 is a FIG. 5 is a perspective view showing only the essential parts of an example of a variable stabilizer, and FIG. 5 is a longitudinal sectional view showing an example of a conventional cable dust cover. 1...Lower arm, 2...Stabilizer bar,
3... Hydraulic cylinder, 4... Hydraulic control valve, 5... Control cable, 5a...
Control cable outer, 5b... Control cable inner, 5c... One end, 8... Push rod, 11... Flange, 19... Cable dust cover, 19a... One end opening, 1
9b...Other end opening.

Claims (1)

[Scope of Claim for Utility Model Registration] A hydraulic cylinder for changing the spring constant of a stabilizer, a push rod of a hydraulic control valve for controlling the hydraulic pressure of this hydraulic cylinder, a control cable whose one end is connected to this push rod, and the above-mentioned valve. A variable stabilizer comprising: a cap fixed to the main body of the control cable for slidably guiding the push rod; , the control cable inner is formed of a cylindrical body having an opening at the other end that is connected by fitting into a flange formed on the cap, and is located between the end of the control cable outer and the cap. Cable dust cover formed of surrounding elastic material.