JPS6142996Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in elastic support devices.

For example, an automobile cab or the like is mounted on a chassis frame via a cushioning bushing made of rubber or the like, and is fixed and elastically supported by a mounting bolt that passes through the cushioning bushing. Additionally, in order to dampen the resonance of the cab etc., a dynamic damper matched to the frequency to be absorbed is separately installed. Since the dynamic damper is mounted separately in this way, there is a problem of space for its installation and an increase in the number of parts.

The present invention was devised to solve the above-mentioned problems, and provides a dynamic damper function to an elastic support device, and will be explained below based on the embodiments shown in the drawings.

FIG. 1 shows an example in which the elastic support device according to the present invention is applied to an automobile cab mount. In the figure, 1, 1 is a chassis frame, 2 is a cab placed on the chassis frame, 3, Reference numeral 3 designates an elastic support device which is disposed between the cab and the chassis frame and fixes the two together, which will be described below with reference to FIG. 2.

Reference numeral 31 denotes a first elastic bush made of rubber or the like, which is disposed between the bracket 11 attached to the chassis frame 1 and the bracket 21 attached to the cab 2, and has a hole 31a in the center thereof. ing.

Reference numeral 32 denotes a second elastic bushing made of rubber or the like and disposed below the frame-side bracket 11, and has a hole 32a in its center.

33 is the first and second elastic bushing 31;
and 32, and the holes 11a and 21a provided in the brackets 11 and 21. In the figure, the tightening nut 34 is screwed into the upper end threaded portion 33a. By fitting the two brackets together, the two brackets are fixed via the elastic bushing. An elastic member 35 made of rubber or the like is attached to the head 331 of the mounting bolt 33 by baking or the like, and a weight 36 is attached to the elastic member 35 by baking or the like, and the weight 36 is attached to the elastic member 35 by baking or the like. It consists of
Note that the elastic member 35 and the elastic bushes 31 and 3
2 and the weight 36, the spring characteristics and mass are selected depending on the frequency and magnitude of vibration to be absorbed by the dynamic damper.

The present invention is constructed as described above, and since the weight 36 is attached to the head of the mounting bolt 33 of the elastic support device via the elastic member 35, the elastic support device itself has a dynamic damper function. Therefore, compared to the case where a dynamic damper is installed separately, the problem of installation space can be solved and the number of parts can be significantly reduced.

FIG. 3 shows another embodiment of the present invention, in which a mounting rod 331a is provided on the head 331 of the mounting bolt 33, and a cylindrical elastic member 351 made of rubber or the like is attached to the mounting rod 331a by baking or the like. By attaching a cylindrical weight 361 to the outer periphery of the elastic member 351 by baking or the like, a dynamic damper is constructed, and the same effects as those of the above embodiment can be obtained.

[Brief description of the drawings]

Fig. 1 is a rear view of a cab equipped with an elastic support device according to the present invention, Fig. 2 is a sectional view showing one embodiment of the device according to the invention, and Fig. 3 is a sectional view of main parts showing another embodiment of the invention. be. 3; Elastic support device, 31, 32; Elastic bushing, 33; Mounting bolt, 331; Bolt head, 3
4; Tightening nut; 35; Elastic member; 36; Weight.

Claims (1)

[Scope of utility model registration request] In an elastic support device in which a buffer bushing made of rubber or the like is interposed between two members to be attached, and the two members are fixed by a mounting bolt inserted through the buffer bushing, the head of the mounting bolt is provided with rubber or the like. An elastic support device characterized in that a weight is attached via an elastic member.