JPH0381226B2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention is attached to the bottom of an audio equipment, etc., and is configured to support the weight of the audio equipment, etc., and to buffer and block vibrations from the floor. Concerning vibration isolation structures for audio equipment, etc.

``Prior Art'' Conventional vibration isolation structures for this type of audio equipment include those shown in FIGS. 6 to 8.

In the drawings, A is a plate-shaped main base, B is a plate-shaped float base disposed parallel to the main base A, and circular holes C are formed in the four corners of the float base B. Although not shown in the drawings, the float base B is equipped with a mechanism such as a motor.

D is a cylindrical insulator made of an elastic material such as rubber or resin, and this insulator D includes an upper cylindrical part E, a lower cylindrical part F smaller in diameter than the upper cylindrical part E, and both cylindrical parts E, F. and a thin section G coaxially connecting the two.

A circumferential groove H that can be freely engaged with the circular hole B is formed on the outer periphery of the upper part of the upper cylindrical portion E.
Further, a through hole J is formed in the upper part of the center of the upper cylindrical portion E, into which a fixing screw I can be inserted without contact, and a tapered surface K whose diameter gradually increases downward from the lower end of the through hole J; An inner peripheral surface having the same diameter is formed from the lower end of the tapered surface K.

Further, at the center of the lower cylindrical portion F, a through hole L is formed into which the fixing screw I described above is inserted. M indicates a washer.

Therefore, insert the upper part of the upper cylindrical part E into the circular holes C formed at the four corners of the float base B, and
The upper cylindrical part E is attached to the float base B by engaging the circumferential groove H with the inner peripheral edge of the float base B.

Next, attach the lower surface of the lower cylindrical portion F to the main base A.
The male screws of the fixing screws I inserted into the through holes J and L from the top of the insulator D through the washer M are screwed into the main base A.
and float base B are connected via insulator D.

"Problems to be Solved by the Invention" As mentioned above, in the conventional vibration isolation structure, the insulator D has a cylindrical shape and is configured so that the outer periphery of the axis has the same elastic force. The upper cylindrical part E and the thin wall part G have a vibration-proofing effect against vibrations, but against vibrations in the horizontal direction,
Since the upper cylindrical portion E and the thin wall portion G only oscillate, there is a drawback that there is no vibration-proofing effect.

Therefore, the present invention was made to solve the above-mentioned drawbacks, and by changing the elastic force of a part of the periphery of the insulator, it has a vibration-proofing effect against vibrations in the vertical and horizontal directions. The purpose of the present invention is to provide a vibration-proof structure for audio equipment and the like.

"Means for Solving the Problems" The present invention consists of a main base, a float base disposed above the main base in parallel, and an insulator formed of an elastic material disposed between the two bases. A part of the outer periphery is provided with a reinforcing force having a larger elastic force than other parts.

"Operation of the invention" When vibration is applied to the insulator, the reinforcing part has high elasticity, so a lateral force is generated in the opposite direction to the reinforcing part, and the other outer walls have low elasticity, so
This results in a longitudinal force, and thus the resultant force of the two forces damps vibrations in the vertical and horizontal directions.

"Embodiments of the Invention" The present invention will be described below based on embodiments of the drawings. Fig. 1 is a perspective view of the anti-vibration structure according to the present invention in an unloaded state, Fig. 2 is a perspective view showing the anti-vibration structure in use, and Fig. 3 shows the main parts of Fig. 2. FIG.

In the drawings, 1 is a plate-shaped main base, 2 is a plate-shaped float base arranged parallel to the main base 1, and circular holes 3 are formed in the four corners of the float base 2. Although not shown, a mechanism such as a motor is attached to the float base 2.

Reference numeral 4 denotes an insulator made of an elastic material such as rubber or resin.
and a thin portion 7 coaxially connecting the two cylindrical portions 5 and 6.

A reinforcing part 8 having a larger elastic force than other parts is formed in a part of the outer wall of the upper cylindrical part 5, but in the drawing, the reinforcing part 8 is a thick part 9 that bulges outward from the other part. When viewed from above, the upper cylindrical portion 5 has an elliptical shape. In addition, the thick part 9
The inside may be formed into a hollow shape.

Furthermore, a circumferential groove 10 that can freely engage with the circular hole 3 is formed on the outer periphery of the upper part of the upper cylindrical portion 5 .
Further, a through hole 12 into which the fixing screw 11 is inserted in a non-contact manner is formed at the upper part of the center of the upper cylindrical portion 5, and a tapered surface 13 whose diameter gradually increases downward from the lower end of the through hole 12. are formed on the inner peripheral surface of the same diameter from the lower end of the tapered surface 13.

Further, a through hole 14 into which the fixing screw 11 described above is inserted is formed at the center of the lower cylindrical portion 6.
15 indicates a washer.

"Operation of the embodiment" Next, the operation of the above embodiment will be explained.
First, the upper part of the upper cylindrical part 5 of the insulator 4 is inserted into the circular holes 3 formed at the four corners of the float base 2, the circumferential groove 10 is engaged with the inner peripheral edge of the circular hole 3, and the insulator is inserted into the float base 2. Attach 4. At this time, the reinforcing portion 8 of each insulator 4
is located outside on the diagonal line connecting the centers of the circular holes 3.

Next, the lower surface of each lower cylindrical portion 6 is brought into contact with the upper surface of the main base 1, and the male screws of the fixing screws 11 inserted into the through holes 12 and 14 from above the insulator 4 through the washers 15 are screwed into the main base 1. hand,
The main base 1 and the float base 2 are connected via an insulator 4.

Therefore, main base 1 and float base 2
When vibration is applied to the upper cylindrical portion 5, as shown in FIG. Since the elasticity is small, it easily bends and becomes a vertical force B, and therefore, a resultant force C of these two forces is applied to the upper cylindrical portion 5. That is, the force of each insulator 4 is
At the same time, the center of gravity has moved upward, and as a result, the center of gravity becomes lower and the damping speed becomes faster.

"Other Embodiments" FIG. 5 shows another embodiment, in which the reinforcing part 8 is composed of a support piece 16 connected downward from a part of the upper end of the upper cylindrical part 5, and this support piece 16 is attached to the main base when floating. 1 and is set to a length that allows it to bend freely when a load is applied. Other points are similar to the above embodiments.

"Effects of the Invention" As described above, the present invention includes a main base 1, a float base 1 arranged above the main base 1 in parallel,
It consists of an insulator 4 formed of an elastic material and placed between both bases 1 and 2, and a reinforcing part 8 having a larger elastic force than other parts is formed on a part of the outer periphery of the insulator 4. .

Therefore, vibrations in the vertical direction can be damped, and the reinforcing portion 8 can also damp vibrations in the lateral direction.

Furthermore, since the center of gravity is directed upward by the reinforcing portion 8, vibrations are damped more quickly. Furthermore, one insulator 4 can provide vibration isolation in the horizontal and vertical directions.

[Brief explanation of drawings]

Fig. 1 is a perspective view of the vibration isolation structure according to the present invention in an unloaded state, Fig. 2 is a plan view showing the vibration isolation structure in use, and Fig. 3 shows the main parts of Fig. 2. 4 is a vector diagram, FIG. 5 is a perspective view showing another embodiment of the vibration isolation structure according to the present invention in a state without load, and FIG. 6 is a diagram showing the load of the conventional vibration isolation structure. FIG. 7 is a plan view showing the vibration isolating structure in use, and FIG. 8 is a longitudinal sectional side view of the main part in FIG. 7. 1...Main base, 2...Float base, 4...
Insulator, 8... Reinforcement part, 9... Thick part, 16
...Support piece.

Claims (1)

[Claims] 1. Consisting of a main base, a float base disposed in parallel above the main base, and an insulator formed of an elastic material disposed between the two bases,
A vibration isolation structure for audio equipment, etc., characterized in that a reinforcing part having a larger elastic force than other parts is formed in a part of the outer periphery of an insulator. 2. A vibration isolation structure for an audio device or the like according to claim 1, characterized in that a part of the upper cylindrical part is formed thicker than other parts as a reinforcing part. 3. A vibration isolation structure for an audio device or the like according to claim 1, characterized in that a supporting piece having a length that contacts the main base is connected from the upper end of a part of the upper cylindrical part as a reinforcing part.