JPS629044B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vehicle height adjustment device mainly applied to the front wheels of an automobile.

The applicant of this application has previously developed a device of this type, which includes a mount rubber on the top of a hydraulic shock absorber extending upward from the axle, an annular mount rubber around the outer circumference that connects it to the vehicle body, and a mount rubber on the top surface of the hydraulic shock absorber that connects it to the vehicle body. A variable volume oil chamber is formed with a lid member, the inside of which communicates with the inside of the shock absorber via an oil path, into which pressure oil can be freely introduced from the outside, and the pressure oil can be introduced into the chamber from the outside. proposed a type in which the oil chamber expands upward to increase the height of the car body, but in this case there is a demand for the height of the car body to be able to be adjusted independently. Exists.

The object of the present invention is to obtain a device that meets such requirements, and includes providing an annular mount rubber at the top of a hydraulic shock absorber extending upward from the axle.
A variable volume oil chamber connected to the hydraulic shock absorber is formed on the upper surface of the rubber through a cover member on the vehicle body side that is attached to the outer circumferential cylindrical case of the rubber, and pressure oil can be freely introduced into the oil chamber from the outside. A second variable volume oil chamber into which pressure oil separate from the external pressure oil can be introduced is formed in the inner circumferential cylindrical member of the mount rubber, and the inner circumferential cylindrical member A cylindrical support member provided on the upper spring seat of the hydraulic shock absorber is fitted into the hydraulic shock absorber.

An example of implementing the present invention will be explained with reference to the attached drawings.

In the drawings, reference numeral 1 indicates an axle of a front wheel, and reference numeral 2 indicates a hydraulic shock absorber constituting a front damper extending upward from the axle 1. The shock absorber 2 has a piston 4 in a lower cylinder 3, as is known per se. The piston rod 5 is fitted with a piston rod 5 and extends upward thereto, and on its outer periphery are provided with an upper spring seat 6, a lower spring seat 7, and a coil spring 8 interposed between them.

On the top of the shock absorber 2, that is, on the top of the piston rod 5, there is provided an annular mount rubber 10 on the outer periphery that connects it to the vehicle body 9, and a lid member 11 on its upper surface that is connected to the vehicle body 9. The inside thereof is formed into a variable volume oil chamber 13 that communicates with the lower part of the shock absorber 2 through an oil passage 12 extending inside the rod 5, and an oil chamber 13 is connected to the oil chamber 13 from an external hydraulic source through an oil supply port 14. When the pressure oil is introduced, for example, as shown in the second figure, the oil chamber 13 expands and is moved upwardly into the vehicle body 9 through the lid member 11 on the upper surface thereof. was made possible to be given.

More specifically, the mount rubber 10 has an end plate 16 at the top of the cylindrical member 15 fixed to its inner peripheral surface.
A flange 19 at the upper end of the cylindrical casing 18 is fitted onto the top of the rod 5 and fixed thereto with a nut 17, and is also fixed to the outer peripheral surface of the rod 5.
The lid member 11 is fixed to the vehicle body 9 via a screw 20, and the lid member 11 is fixed to the casing 18.
It was designed to fit and be fixed to the top surface of the .

Although the above is not particularly different from what was proposed earlier, according to the present invention, the oil chamber 13 is provided in the mount rubber 10.
A variable-capacity second oil chamber 21 is formed at the lower side of the oil chamber 21, into which separate pressure oil can be freely introduced from an external oil pressure source. More specifically, a piston 22 whose outer circumferential cylinder is the cylindrical member 15 on the inner circumferential surface described above is fitted into the mount rubber 10, and its upper surface is formed into the oil chamber 21. Pressure oil can be introduced separately from an external hydraulic source through the oil supply port 23, and the piston 22 is connected to the shock absorber 2.
It is supported from the lower surface via a thrust member 25 by a cylindrical support member 24 extending upward from the above-mentioned upper spring seat 6 on the side, and by introducing the pressure oil, for example, as shown in the third figure. In this way, the oil chamber 21 expands upward, and the vehicle body 9 is pushed by it and moves upward.

The oil supply port 23 is connected to a connection port 28 opened on the upper surface of the lid member 11 via a flexible pipe 27.

The device of the present invention can be applied to a vehicle body 9 as shown in FIG. 4, for example.
In this case, a hydraulic shock absorber 9, which should constitute a substantially similar rear damper, is installed at the rear of the hydraulic shock absorber 9.
a is provided, and the inside of the oil chamber 13a at the top thereof is connected to the oil chamber 13 via a connecting pipe 26.

To explain its operation, it is assumed that the height of the vehicle body 9 is reduced more or less as a passenger gets on the vehicle, as shown in FIG. A corresponding amount of pressure oil is introduced into the interior from the outside, and this causes the oil chamber 13 to expand into the state shown in the second figure, for example, and the same applies to the oil chamber 13a communicating therewith. Thus, the state shown in FIG. 5 is reached, and the height of the vehicle body 9 is increased in the front and rear directions, and the vehicle body 9 returns to its original state. In such a situation or in other situations, to further adjust the height of the front part of the vehicle body 9, the second oil chamber 2 described above is used.
According to this, the oil chamber 21 is expanded as shown in FIG. 3, and the entire body is brought into the state shown in FIG. 6, for example.

In this way, according to the present invention, a mount is provided at the top of the hydraulic shock absorber 2 to form an oil chamber 13 that is connected to the hydraulic shock absorber 2 extending upward from the axle 1 and into which pressure oil can be freely introduced from the outside. Since the rubber 10 has a second variable volume oil chamber 21 formed in its inner circumferential cylindrical member 15 into which pressure oil separate from the external pressure oil can be introduced, each can be independently controlled. The height of the vehicle body can be adjusted in two steps, increasing the range of height adjustment and increasing the height of the vehicle in two steps.
The oil chamber is provided inside the mount rubber 10 and can be formed compactly.
Since the cylindrical support member 24 provided on the upper spring seat 6 of the hydraulic shock absorber 2 is fitted into the inner circumferential cylindrical member 15 of This has effects such as being able to take a sufficient effective stroke of the spring 8.

[Brief explanation of the drawing]

Fig. 1 is a cutaway side view of one example of the device of the present invention;
3 and 3 are cross-sectional side views of the main parts in the two-stage adjustment operating state, FIG. 4 is an explanatory diagram of the state in combination with the rear damper, and FIGS. 5 and 6 are explanatory diagrams of each operating state. It is a line diagram. 1...Axle, 2...Hydraulic shock absorber, 9...Vehicle body,
10...Mount rubber, 11...Lid member, 13...
...Oil chamber, 21...Second oil chamber, 24...Support member.

Claims (1)

[Claims] 1. An annular mount rubber is provided on the top of the hydraulic shock absorber extending upward from the axle, and a variable mount rubber connected to the hydraulic shock absorber is mounted on the upper surface of the rubber via a cover member on the vehicle body side that is attached to the outer circumferential cylindrical case of the rubber. In a device in which a volumetric oil chamber is formed and pressure oil can be introduced from the outside into the oil chamber, pressure oil separate from the external pressure oil can be introduced into the inner circumferential cylindrical member of the mount rubber. A vehicle height adjustment device characterized in that a second variable volume oil chamber is formed and a cylindrical support member provided on the upper spring seat of the hydraulic shock absorber is fitted into the inner cylindrical member. .