JPS596273Y2 - Anti-vibration support device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a vibration isolation support device for mobile equipment such as ship equipment that requires vibration isolation.

Conventionally, when electronic components such as crystal oscillators are used in mobile electronic equipment such as marine equipment, external vibrations cause
This may cause frequency fluctuations in the crystal oscillator.

This is related to the support device for the crystal piece, and when vibration is applied in a horizontal plane corresponding to the supporting direction of the crystal piece, distortion occurs in the supporting portion, resulting in a frequency fluctuation.

In such a crystal oscillator, the natural frequency is 2 to 3 Hz.
A value of the following is required, and anti-vibration measures are required.

A vibration isolating support device using air springs is known as a device that satisfies this requirement, but this vibration isolating support device is effective for large equipment, but is not suitable for supporting small equipment such as the above-mentioned crystal oscillator. It is not possible to provide sufficient vibration isolation.

The present invention was developed in view of the above circumstances, and it is an object of the present invention to provide a vibration isolating support device that is arranged so that the equipment to be vibration-isolated is at the constant momentary center against vibrations in the horizontal plane. It is.

FIG. 1 and FIG. 2 both show an embodiment of the present invention, which will be described in detail below with reference to the drawings.

The fixed part 11 is attached to the casing in a suspended state, and a plurality of anti-vibration rubbers 10 are inserted into its arm parts.
The fixed support base 9 is supported in a vibration-proof manner.

The fixed support base 9 is provided with a support base 7 supported by an axis A in the X direction, and the support base 7 is rotatable about the axis A.

The support base 7 and the fixed support base 9 are also supported by coil springs 14 provided in the Y direction perpendicular to the X direction, and are designed to buffer vibrations in the Y direction perpendicular to the X direction. restrain vibrations.

A rectangular anti-vibration table 1 is supported on the support stand 7 by an axis B in the Y direction, and the anti-vibration table 1 is rotatable by the axis B.

The vibration isolating table 1 and the support table 7 are also supported by coil springs 13 provided in the X direction perpendicular to the Y direction, thereby damping vibrations in the Y direction and restraining the amplitude of the apparatus with respect to vibrations in the X direction.

Further, on the bottom of the vibration isolating table 1, there is provided a socket 2 for mounting an electronic component for vibration isolation, and a T number 12 for freely rotating the weight 3 so that the electronic component can be easily removed. The mounting bracket 4 provided with the weight part 3'
A mounting bracket 6 provided with a stopper 5 is provided so that it can be easily removed.

Further, when a crystal oscillator is installed as described above, the supporting portion of the crystal piece in the crystal oscillator is installed so as to be within a horizontal plane in the X and Y directions.

A sponge 15 is attached to a portion of the weight portion 3' that comes into contact with electronic components to protect the electronic components.

These support base 7, vibration isolation base 1, and weight 3 are each provided in a suspended state on a fixed support base 9.

In this device, external vibrations in the axis A and axis B directions,
In other words, the vibration in the horizontal plane in the X and Y directions is applied to the support part of the vibration isolator 1, and the electronic components are installed at a point within the vibration isolator that becomes the constant instantaneous center for external vibrations. be done.

That is, the acceleration in the horizontal plane applied to the electronic component is set to zero.

Now, when vibration is applied from the outside in the X direction, the fixed base 11 is fixed to the casing, so it vibrates the same as the external vibration.

The vibration of the fixed base 11 is buffered by the vibration isolating rubber 10 and transmitted to the fixed support base 9, and the vibration isolating base 1 rotates around the axis B, but is not displaced by the reaction of the weight 30. The equipment is kept almost stationary.

In the Y direction as well, the vibration isolating table 1 rotates around the axis A and performs the same operation, and vibrations in the Y direction are damped by the vibration isolating rubber 10 and coil springs 13 and 14.

The amplitude of the vibration isolating table 1 due to external vibrations is restrained by the axes A and B, the vibration isolating rubber 10, and the coil springs 13 and 14.

In other words, with this device, displacement of the electronic component due to acceleration in any direction can be kept within a limited range to prevent the electronic component from colliding with other components, and vibration isolation and buffering can be achieved against vibration in all directions. can be done.

Furthermore, when a crystal oscillator is attached, the instantaneous center position is at the center of the crystal oscillator, and no frequency fluctuations occur due to external vibrations.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the vibration isolation support device according to the present invention, and FIG. 2 is a front view of FIG. 1. 1... Anti-vibration table, 3... Weight, 7...
...Support stand, 9...Rigid support stand, 10...
...Vibration-proof rubber, 11...Fixing base, A,
B...Axis.

Claims (1)

[Scope of utility model registration request] a support base rotatably attached to the fixed support base rotatably about a first axis in a predetermined direction; and a support base rotatably suspended from the support base rotatably about a second axis perpendicular to the first axis. A vibration isolating table to be attached, a vibration isolating device installed at a constant instantaneous center position that does not displace due to external vibration of the fixed support base of this vibration isolating table, and a lower part of the vibration isolating table. An anti-vibration support device comprising a weight attached to the section.