JPS6228545A - Vibration-proof support device - Google Patents

Abstract

PURPOSE:To reduce a spring unit to the minimum by supporting a material to be supported in the vibration-proof state on a vibrator through U-shaped springs having a vibration softening function in the directions of X-axis, Y-axis and Z-axis. CONSTITUTION:A material 1 to be supported in the vibration-proof state is accomodated in the interior of a space portion 20 which is formed in a vibrator 2, parallel to side surfaces 11, 13 and 12, 14 and is bounded by side walls 21, 23, 22, 24. U-shaped springs 31-34 are disposed in each clearance, and a set of surfaces 21, 11 and a set of surfaces 22, 12 are supported by leg portions of the respective springs 31-34. A material to be supported in the vibration- proof state can be supported in the vibration-proof state by using the minimum number of spring units.

Description

DETAILED DESCRIPTION OF THE INVENTION 1. The present invention provides a vibration-isolated support for a vibrating body,
, relates to a device for vibration-proof support in the Y and Z axis directions.

Conventionally, in order to provide anti-vibration support for a device to be protected from vibration, such as a computer, on a vibrating body such as a car, the following steps have been taken: 1. Support from the vibrating body via rubber, coil springs, plate springs, air springs, etc. 2. The vibration-isolated support object should be in the shape of a cube or rectangular parallelepiped, and the vibrating body should be supported using a similar cube or rectangular parallelepiped. Although the shape is slightly larger than that of the support to be vibration-isolated, a space is formed, and the support to be vibration-isolated is loosely housed inside this space of the vibrating body, and the support to be vibration-isolated and A method is adopted in which M beak bodies are installed in six gaps between mutually opposing external surfaces or side walls of the space of the vibrating body.

[IG'''-7° However, these conventionally known methods have the following problems: 1) In the first method, the support to be vibration-isolated has a sufficiently low natural frequency. Z) In the second method, there is no vibration damping or it is necessary to provide special dampers to obtain vibration damping.

Therefore, the present invention solves these problems in the conventionally known methods, and has the following features: 1) A minimum number of support springs are required; 2) It is possible to damp vibrations in the X, Y, and Z axis directions; 3) To obtain a new anti-vibration support device that has non-linear spring characteristics in the Z-axis direction and can cope with excessive displacement. Its purpose is to

In order to achieve this object, the present invention is as follows.
As shown in the figure, in the Cartesian coordinate system, X, Y and Z
In order to provide vibration-isolated support to a vibrating body 2 in the direction of a substantially cubic or rectangular parallelepiped-shaped vibration-isolated support 1 having four side surfaces parallel to the axial direction, and a top surface and a bottom surface. In the vibrating body 2, a space 2° having a contour similar to that of the vibration-isolated support 1, but having a slightly larger dimension, is provided.
Each of the side walls is provided parallel to and spaced apart from each side surface of the support 1 to be vibration-isolated, and at least the side wall of the space 2° of the vibrating body Z in the X-axis or Y-axis direction and the side wall of the vibration-isolated support 1 At least one U-shaped spring 3 is arranged within the space between each side of the support 1 so that its legs are in two axial directions, and these side walls and the side are arranged in a U-shape. It is characterized by a vibration isolation support device which is interconnected by spring legs.

Since the present invention has the above-described configuration, the vibration-isolated support 1 has vibration damping performance with respect to the vibrating body 2 in the X, Y, and Z axis directions. The U-shaped spring 3 provided therein enables anti-vibration support.

E-1-Below, the present invention will be described with reference to appendixes (1 to 1 of drawings 1-1) showing embodiments thereof.
This will be explained in detail based on FIG.

First, FIG. 1 schematically shows one embodiment of the present invention, in which four side surfaces 11 to 1. and bottom surface 1. and 6 of the top surface 16
A vibration-isolated support 1 having a cubic or rectangular parallelepiped outline with parallel surfaces is provided with an X-axis and a Y-axis of Opposite sides 1
1 and 1. and parallel to and spaced from 1□ and 11 are side walls 2I and 23, etc., 22 and 2. A space Z that similarly has a cubic or rectangular parallelepiped outline and is bounded by. is housed inside.

And, between the parallel surfaces 21 and 11 and 2 and 13 facing each other in the X-axis direction of the vibration-isolated support 1 and the vibrating body 2, which have a cubic or rectangular parallelepiped shape, In each gap, as shown in the figure, there are U-shaped springs 31 to 34, two each in the Y-axis direction, that is, 3,
．． 32 and 3s, 3= are spaced from each other and each spring pair 31, 3□ and 3. ．． 3. The curved parts of Z
U-shaped springs 3. in each plane of the Y-axis direction and spaced apart in the axial direction; ．． 32 and 3. ．．
3. The legs are arranged to face each other in the Z-axis direction, and these surfaces 2. The pair with and 1+ and the surface 2
2 and 1□ are connected to each spring 31 to 3. It is designed to be supported on the legs of the body. That is, each spring 3. ．． 32
and 3. ．． 3. In the pairs of U-shaped springs, their curved portions are in the +ZZ axis direction in the former case, and in the -Z axis direction in the latter, and at the same time, the leg members of the pair of U-shaped springs in each pair are are respectively =Z axis and +
It is oriented in the ZX axis direction. In addition, the U-shaped spring 31
~3. The sum of the spring reaction forces in these two axial directions balances the self-weight of the vibration-isolated support 1 in the two-axis directions, and supports the vibration-isolated support 1 in a neutral position with respect to the vibrating body 2. Each spring 3. It is assumed that the spring constant in the Z-axis direction is set to .about.34.

Further, U-shaped springs 31 to 3. Because of its shape, it has spring properties also in the X and Y axis directions, and can be designed to provide vibration-proof support in these directions as well.

Furthermore, each of the U-shaped springs 31 to 34 is constructed by stacking two or more U-shaped leaf springs, thereby providing a damping force due to friction between the plates, thereby damping vibration. It becomes possible. That is, for example, FIG. 2 shows one embodiment of the U-shaped springs 31 to 34 having such a configuration, and in the figure, 4 is the first U-shaped leaf spring, and 5 is the first U-shaped leaf spring.
6 indicates the second U-shaped leaf spring plate, and 6 indicates the third semi-U-shaped spring plate that does not perform spring action near the neutral position. When the support 1 and the vibrating body 2 are in the state shown in FIG. 1, each U-shaped spring 3. ~3. teeth,
In the neutral position, the upper end of the third spring plate 6 is in contact with the inner surface of the curved part of the second U-shaped spring plate 5, and FIG. Shape springs 31-3
4 shows a state in which the vibration-isolated support 1 is excessively displaced in the -Z-axis direction, and a state in which the spring constant is increased is schematically shown.

Note that the U-shaped springs 3, -3. Instead of consisting of several U-shaped spring plates 4, 5.6 as shown in Figs. 2 and 3, one spring plate 7 is formed into a U-shaped structure as shown in Fig. 4. The curved portion 71 is tapered to have a thin plate thickness (FIG. 5 shows a state in which the vibration-isolated support 1 is excessively displaced in the =ZZ axis direction), As shown in the figure, the curved part 8 is made of a normal spring rigid material, and both legs 9 are made of a high spring rigid material. Alternatively, as shown in FIG. 8, it may be constructed from a single U-shaped spring plate 10, and a stopper member 11 may be provided near the neutral position. The figure shows a condition where the vibration-isolated support 1 is excessively displaced in the -Z-axis direction).
This can be considered as an example of a pond.

Since the present invention has the above-described configuration, the vibration-isolated support 1 is connected to the vibrating body 2 via a small number of U-shaped springs 31 to 34 at a sufficiently low natural frequency. ,Moreover,
It is possible to provide anti-vibration support without the need for a special damping member.

Since the present invention has the above-described configuration and operation, it is clear that it exhibits the following effects. In other words, 1) a vibration-isolated support with a given self-weight can be supported in vibration-isolated manner by using the minimum number of spring units; 2) vibration-absorbing effect in three directions of the x, Y, and Z axes of the orthogonal coordinate axis system. 3) When using several overlapping spring plates as a spring member, the friction between the plates can be used to provide vibration damping properties 4) U-shaped spring The characteristics are non-linear, and as a result, excessive displacement in the Z-axis direction can be suppressed.

Therefore, the present invention having such a configuration, operation, and effect provides an optimal vibration-proof support device for devices mounted on automobiles and the like that dislike vibrations, such as computers, audio products, and the like. be.

[Brief explanation of the drawing]

Fig. 1 is a schematic perspective view showing the overall arrangement of the present invention, Fig. 2 is a perspective view showing one embodiment of a U-shaped spring used in the present invention, and Fig. 3 is one leg thereof. FIG. 4 is a schematic perspective view showing another embodiment of the U-shaped spring; FIG. 5 is a view similar to FIG. 3;
6 is a schematic perspective view showing still another embodiment, FIG. 7 is a view similar to FIG. 3, FIG. 8 is a schematic perspective view not showing still another embodiment of the U-shaped spring, FIG. 9 is a diagram similar to FIG. 3. 1... Vibration-isolated support, 2... Vibrating body, 31-3.・
・・U-shaped spring, 4, 5.6 ・・U-shaped spring plate, 71
...Curved part where the board thickness changes, 7□...Legs, 8
... Obstinate curved part made of normal spring rigid material, 9...
Legs made of high spring rigidity material, 10... U-shaped spring plate, 11... Stopper member.

Claims (1)

[Claims] 1. In a rectangular coordinate axis system, a vibration-isolated object having a substantially cubic or rectangular parallelepiped shape and having four side surfaces parallel to the X, Y, and Z axis directions, and a top surface and a bottom surface. In order to provide anti-vibration support for the support in that direction relative to the vibrating body, the vibrating body has a similar contour to the vibration-isolating support, but a space with slightly larger dimensions is added to the vibrating body. Each side wall and bottom wall are provided parallel to and spaced apart from each side and bottom surface of the vibration-isolated support, and the side wall and the bottom wall of the vibrating body in at least the X-axis or Y-axis direction and the side wall of the vibration-isolated support opposite thereto, At least one U-shaped spring is arranged in each interval between each side of the swing support so that both legs thereof are in the Z-axis direction, and these side walls are connected to form a U-shape. A vibration isolating support device characterized by being formed by legs of shaped springs interconnecting each other. 2. Two U-shaped springs are arranged in two stages at intervals in the Z-axis direction within the space between the side wall of the vibrating body and the side face of the anti-vibration support object facing it. 2. The vibration isolating support device according to claim 1, wherein the legs of each of the two U-shaped springs are arranged to face each other. 3. The U-shaped spring supports the weight of the object to be vibration-isolated at its neutral position in the Z-axis direction, and has a spring constant that can be selected in the X-, Y-, and Z-axis directions. The vibration isolation support device according to item 1 or 2. 4. Claims 1, 2, or 3, in which the U-shaped spring is constructed by laminating several U-shaped spring plates and a spring plate that does not perform a spring action near the neutral position. Anti-vibration support device as described in section. 5. Claim 1, 2 or 3, in which the U-shaped spring is composed of a pair of leg parts having a certain plate thickness and one curved part thinner than this plate thickness. Anti-vibration support device as described in section. 6. Claim 1, in which the U-shaped spring is composed of a pair of leg portions made of a material with high spring stiffness and one curved portion made of a material with normal spring stiffness. 2
Or the anti-vibration support device described in item 3. 7. The U-shaped spring has a substantially uniform plate thickness, does not act near the inner surface of its curved part near its neutral position, but has an excessive force in the Z-axis direction on its leg portion. 4. The vibration isolating support device according to claim 1, further comprising a stopper that cooperates with the curved portion to increase the spring constant in that direction when displacement occurs.