JPH05332399A - Vibrationproofing structure - Google Patents

Abstract

PURPOSE:To display a proper vibrationproofing effect in an environment of using an equipment, in the case of molting the equipment necessary for vibrationproofing a crystal oscillator or the like. CONSTITUTION:By holding a crystal oscillator 1 or the like with eight coil springs 2 from the periphery so as to be placed radially with the center of gravity 5 of the crystal oscillator or the like serving as the center, vibration can be isolated without generating a rotary motion. By changing a spring constant of the coil spring 2, art optimum vibrationproofing effect can be obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-vibration structure such as a crystal oscillator, and more particularly to a frequency converter for a mobile communication wireless communication device.

[0002]

2. Description of the Related Art A conventional anti-vibration structure such as a crystal oscillator is shown in FIG.
As shown in FIG. 3, the crystal oscillator 1 is surrounded by an elastic body 20 such as rubber or sponge. This conventional anti-vibration structure is expected to provide anti-vibration due to the difference in shape and quantity of the elastic body 20 such as rubber or sponge.

[0003]

In this conventional vibration-damping structure, there is a risk of deterioration in reliability such as deterioration due to aging due to the material properties of the elastic body such as rubber or sponge.
Furthermore, the vibration isolation effect may be affected depending on the installation environment of the device. Further, the elastic body such as rubber or sponge can exhibit the vibration damping effect in a relatively high frequency range, and when mounted on a moving body such as an aircraft or a ship, the natural frequency of the moving body and the external frequency It is not easy to deal with frequency and acceleration such as vibration from the body, and dedicated elastic body such as rubber or sponge is used in order to obtain the optimum vibration isolation effect from the mass of the crystal oscillator and the natural frequency of the moving body. It was necessary to design and manufacture, and it was difficult to handle high-mix low-volume production and quick delivery.

[0004]

In the vibration-proof structure of the present invention, a vibration-proof object is held by a plurality of elastic bodies, and a coil spring is used as the elastic body, and the spring constant of the coil spring or the like is changed. Thus, it is possible to set a necessary vibration-proof frequency, and it is possible to easily cope with a difference in mass of a crystal oscillator or the like.

[0005]

The present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a vibration isolation structure according to a first embodiment of the present invention. By holding the crystal oscillator 1 or the like, which is a vibration-proof object, from the surroundings by the coil spring 2, a vibration-proof effect can be obtained. Further, by holding the coil spring 2 radially from the center of gravity 5 of the crystal oscillator 1 or the like, it is possible to prevent the crystal oscillator 1 or the like from generating rotational movement during vibration isolation.

FIG. 2 shows a second embodiment of the present invention, in which a crystal oscillator 1 or the like is held by eight linear members having a coil spring 2 at the tip and eight rolling members 10 such as pulleys. It has a vibration-proof structure.

FIG. 3 shows a third embodiment of the present invention, in which, contrary to the first embodiment, two coil springs 2 arranged in a direction inclined with respect to the crystal oscillator 1 are close to each other. To be retained.

FIG. 4 shows a fourth embodiment of the present invention, in which each of the eight corners of a rectangular parallelepiped crystal oscillator 1 is held by a total of 24 coil springs 2 in three directions in the extension direction of the ridge. .

FIG. 5 is a fifth embodiment of the present invention, in which each of the eight corners of a rectangular parallelepiped crystal oscillator 1 is coil coil 2 with a total of eight coil springs, one in each direction of extension of a vertical ridge. Hold by.

[0010]

As described above, according to the present invention, by using the coil spring to hold the vibration-proof object from the surroundings, the appropriate vibration-proof effect can be easily obtained. For example, when anti-vibration effect in the low frequency range is expected, by using a coil spring with a small spring constant because of the relationship with the mass of the object to be isolated, the resonance frequency of the coil spring is By setting the frequency lower than the vibration frequency, it is possible to deal with the problem.

[Brief description of drawings]

FIG. 1 is a perspective view of a first embodiment of the present invention.

FIG. 2 is a perspective view of a second embodiment of the present invention.

FIG. 3 is a perspective view of a third embodiment of the present invention.

FIG. 4 is a perspective view of a fourth embodiment of the present invention.

FIG. 5 is a perspective view of a fifth embodiment of the present invention.

FIG. 6 is a perspective view of a conventional vibration damping structure.

[Explanation of symbols]

 1 Crystal Oscillator, etc. 2 Coil Spring 5 Center of Gravity of Crystal Oscillator, etc. 10 Rolling Member such as Pulley 20 Elastic Body such as Rubber or Sponge

Claims (5)

[Claims] 1. A vibration-proof structure, characterized in that a vibration-proof object is held by a plurality of elastic bodies so as to be radially from its center of gravity. 2. A vibration-proof object is held by a linear body having an elastic body at a plurality of tips, and a rolling member is provided at an arbitrary position of the linear body having an elastic body at the tip, and the tip is provided at the tip. An anti-vibration structure capable of changing the direction of a linear body having an elastic body from the middle. 3. An anti-vibration structure, characterized in that the anti-vibration object is held below the upper end and above the lower end by an elastic body at arbitrary angles. 4. An anti-vibration structure, characterized in that a plurality of combinations of elastic bodies of two points at right angles in the horizontal direction and one point in the vertical direction are used and held from an arbitrary position of an object to be isolated. 5. A vibration-proof structure, characterized in that a vibration-proof object is held by an arbitrary number of elastic bodies in an upward direction and a downward direction.