JPH0658494U - Viscous liquid damper - Google Patents

Abstract

(57) [Summary] [Object] To provide an oil damper that can be manufactured in a shorter time than conventional oil dampers and can be fixedly supported by a fixing member by a simple operation. [Structure] A viscous liquid damper characterized in that a container body and a lid portion in which a viscous liquid is sealed are made of a thermoplastic resin, and a thermoplastic resin mounting portion is provided on the closed container body or the lid portion. . The mounting portion is fitted in the space formed in the fixing member and is firmly fixed and supported.

Description

[Detailed description of the device] [Prior art and its problems]

[0001]

[Industrial applications]

 The present invention relates to a viscous liquid damper having a viscous liquid enclosed therein and having a vibration damping action, and more particularly to a viscous liquid damper useful for vibration isolation of audio equipment or precision equipment.

[0002]

[Prior art and its problems]

 For example, when an audio device such as a CD player is installed in an automobile, vibration is generated when the automobile is running or when the automobile is stopped. Therefore, it is necessary to take sufficient anti-vibration measures for the audio device that is extremely sensitive to vibration. There is. As an anti-vibration measure for the audio equipment, a rubber closed container in which a viscous liquid is sealed in the container and provided with a stirring section that protrudes into the viscous liquid, and the container, particularly the side wall of the container is prevented from being deformed, and the closed container is also provided. The technique of using a viscous liquid damper composed of a rubber holder for fixing the is widely adopted.

This rubber damper is excellent in vibration damping ability and has a relatively simple structure, so it is used everywhere. However, the material forming the damper is mainly rubber, and there is a problem that it takes a long time to manufacture the damper. Also, as a method of fixing this damper to the fixing member, methods such as bolt tightening and use of adhesive are adopted, but although each method has characteristics, the fixing operation method is complicated and required for fixing. There was also the problem that the time was long.

[0004]

[The purpose of the device]

 Therefore, the present invention has been proposed in order to solve the above problems, and an object thereof is to provide a damper that can be manufactured in a short time and can be fixed in a short time by a simple method. It is what

[0005]

[Means for solving problems]

 The present invention has been made to achieve the above-mentioned object, and when a thermoplastic resin is used as a material for forming a closed container of a viscous liquid damper, a viscous resin having excellent vibration absorbing ability and excellent moldability is obtained. It is based on the knowledge that a liquid damper can be obtained in a short time, and that the damper can be easily and firmly fixed to a fixing member by using a mounting tool such as a nail.

[0006]

[Specific explanation of the device]

 Hereinafter, the present invention will be specifically described with reference to FIG. 1 showing an example of a viscous liquid damper. The viscous liquid damper of the present invention comprises a thermoplastic resin closed container (1) in which a viscous liquid is sealed and a thermoplastic resin mounting portion (2). The closed container is composed of a stirring part (14), a thin flexible part (11), a side wall (12) and a lid part (13). It is preferable that a hole for inserting the pin of the supported body is formed in advance in the stirring section. It is even more preferable to form a convex portion (14) on the contact surface of the lid portion with the viscous liquid. By forming the convex portion, it is possible to prevent bubbles from being mixed in the viscous liquid when the lid portion is attached to the container body.

It can be said that the present invention has an important feature in that a mounting portion for fixing the viscous liquid damper to the fixing member is formed in advance. That is, a mounting portion is provided on a part of the viscous liquid damper, for example, a lid, a space corresponding to the fixing member is formed, and the mounting portion is fitted into the space, so that the damper can be easily fixed. It is possible to do. For example, referring to FIG. 2, the mounting portion (2) is fitted in the space portion (4) in the fixing member (3). More specifically, the mounting portion of the viscous liquid damper is pushed into the space, and the claw (31) formed at the tip of the mounting portion fixes the convex portion (41) of the wall forming the space portion. Further, instead of the claw (31) of FIG. 2, a claw (31) having the shape shown in FIG. 3 may be used.

Further, a mounting part as shown in FIG. 4 can be adopted. That is, the mounting portion (2) is composed at least of the rectangular parallelepiped (33) having the convex portion (34) formed therein (Fig. 4-a). The viscous liquid damper having the mounting portion is provided in the fixing member. When it is pushed into the pre-formed space and then the damper is rotated 90 °, the projection (34) moves along the groove formed in the space and reaches the recess (43). Then, the viscous liquid damper is fixed by being fitted in the recess (FIGS. 4-b and c).

A specific example of using the viscous liquid damper of the present invention will be described. An example of holding a CD player using the damper will be described with reference to FIG. 5, which is a cross-sectional view of a main part, and a pin (51) provided on the body of the CD player (5) and the viscous liquid damper will be described. It is fitted and held in the hole of the stirring section of (10). The mounting portion of the viscous liquid damper is fitted and fixed in the space of the fixing member. Even if the supporting member shakes due to, for example, the vibration of the automobile, the vibration of the supporting member is almost absorbed by the viscous liquid damper.

In the viscous liquid damper of the present invention, it is important that the closed container and the mounting portion are made of thermoplastic resin. The thermoplastic resin of the present invention may include a so-called thermoplastic elastomer. The stirring portion, the thin-walled flexible portion, the side wall and the lid portion, and the mounting portion of the closed container can be made of the same thermoplastic resin, but it is preferable to partially change them. For example, it is preferable to use a thermoplastic elastomer for the thin-walled flexible portion.

The thermoplastic resin includes polyethylene, polypropylene, polyester, polyamide, polycarbonate, polyacetal, and the like, and the thermoplastic elastomer includes polyester block copolymer, styrene-diene block copolymer, ethylene-propylene copolymer. Examples thereof include thermoplastic polyurethane.

The damper of the present invention can be manufactured by adopting a known method. Usually, a container body integrally formed with a stirring section, a thin flexible section and a side wall is manufactured in advance, and Is filled with a viscous liquid, and then the lid is heat-sealed to the container body.

[0013]

[Effect of device]

 According to the present invention, it becomes possible to provide a viscous liquid damper capable of sufficiently absorbing the applied vibration. Moreover, since the viscous liquid damper of the present invention is made of a thermoplastic resin, it can be easily manufactured. Further, even when the viscous liquid damper is fixed to the fixing member, the mounting portion formed on the damper is fitted into the space portion provided in the fixing member, so that the viscous liquid damper can be firmly fixed by a simple operation. It can be fixed.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an example of a viscous liquid damper of the present invention.

FIG. 2 is a cross-sectional view of another example of the viscous liquid damper of the present invention.

FIG. 3 is a cross-sectional view of another example of the viscous liquid damper of the present invention.

FIG. 4 is a cross-sectional view of another example of the viscous liquid damper of the present invention. 4A is a cross-sectional view of the viscous liquid damper,
FIG. 4-b is a sectional view of the mounting portion when the damper is rotated by 90 °, and FIG. 4-c is a partially enlarged sectional view of the damper when the damper is also rotated by 90 °.

FIG. 5 is a cross-sectional view of an essential part of an example of supporting a CD damper using the viscous liquid damper of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Airtight container 2 Mounting part 3 Fixing member 4 Space part 5 CD player-10 Viscous liquid damper 11 Thin flexible part 12 Side wall part 13 Lid part 14 Stirring part 15 Convex part formed on the lid part 31 Claw 33 Rectangular solid 34 Convex portion formed on the surface 41 Convex portion of wall forming the space portion 43 Recessed portion of the space portion 51 Pin

Claims (2)

[Scope of utility model registration request] 1. A viscous liquid damper comprising at least a closed container made of a thermoplastic resin, which comprises a container body in which a viscous liquid is sealed and a lid part. A viscous liquid damper characterized in that a mounting portion made of a plastic resin is provided. 2. The viscous liquid damper according to claim 1, wherein a convex portion is provided on the viscous liquid contact surface of the lid portion.