JP5821725B2 - Anti-vibration structure - Google Patents

Description

The present invention relates to an anti-vibration structure that performs anti-vibration of a supported body such as an electronic device or a housing that houses the electronic device using an elastic body.

  In a conventional anti-vibration structure such as an electronic device, a structure has been proposed in which a support base is attached to an elastic body such as an anti-vibration rubber attached to a supported body to provide an anti-vibration effect in all directions (Patent Literature). 1). Some electronic devices and the like mounted on a moving body have a vibration-proof structure that protects the electronic device and the like from vibrations of the moving body. In addition to avoiding damage and malfunction of equipment due to vibration, the objective of performing vibration isolation is to exhibit sufficient performance by changing the attitude of the equipment due to rocking phenomenon etc. when the object of vibration isolation is an antenna, etc. In some cases, it is possible to avoid being unable to do so.

JP 2007-133990 A ([0040]-[0042] paragraphs, FIG. 13, FIG. 14, FIG. 15)

In general, when vibration isolation is performed by supporting a supported body with an elastic body, the natural frequency (determined based on an assumed vibration condition) of the supported body in a state supported by the elastic body is set to a required value. Therefore, the elastic body is required to have a spring constant proportional to the weight of the supported body. Since the spring constant of the elastic body changes depending on the area and length of the elastic body in contact with the supported body, in order to obtain the required natural frequency in the vibration-proof design, the elastic body is in proportion to the weight of the supported body. It is necessary to adjust the area and length in contact with the supported body. On the other hand, it is necessary to consider the durability of the elastic body to be used, and in order to avoid breakage of the elastic body due to excessive stress applied to the elastic body when supporting the supported body, the stress applied to the elastic body is It is necessary to adjust the area of the portion where the elastic body supports the supported body in accordance with the weight of the supported body so as to be less than the allowable stress. In other words, it is necessary to adjust the area of the portion where the elastic body supports the supported body and the length of the elastic body so that the weight of the supported body, the required natural frequency, and the allowable stress conditions of the elastic body are satisfied. become.

In the conventional anti-vibration structure (Patent Document 1), as the shape of the elastic body, the area and length in contact with the supported body in all directions are the weight of the supported body, the required natural frequency, and the allowable stress of the elastic body. It is necessary to satisfy the following conditions. For vibration isolation of small and light weight devices such as disk devices, the weight applied to the elastic body is small and there is room for allowable stress. It is easy to make a vibration structure. However, it is necessary to increase the area of the elastic body in contact with the supported body according to the weight of the supported body, such as a housing that houses the electronic device or the electronic apparatus, according to the weight of the supported body. . When the shape of the elastic body is set to be able to come into contact with the supported body over a wide area with respect to vibration isolation in all directions in three dimensions, the elastic body is enlarged, and the vibration isolation structure using the elastic body itself is also enlarged. was there.

The present invention has been made to solve the above-described problems, and performs vibration isolation in three dimensions in all directions with respect to a heavy-weight supported body such as an electronic device or a casing including the electronic device. It is possible to obtain a small vibration-proof structure capable of

The vibration isolator according to the present invention has a first block attached to a first side surface of a box-shaped supported body, a first through hole, and the first block serves as the first through hole. A first elastic body fitted in, a first opening having a first opening, the first elastic body fitted in the first opening, and a first side surface of the supported body are adjacent to each other. A second block attached to the second side surface; a second elastic body having a second through hole; and the second block fitted into the second through hole; and a second opening. And a second mount in which the second elastic body is fitted into the second opening.

In the vibration isolating structure of the present invention, as described above, the three-dimensional directions requiring the vibration isolating are the first block, the first elastic body, the first mount portion, the second block, and the second block. Since the portion composed of the elastic body and the second mount share the vibration in two directions respectively, the first elastic body and the second The size of each elastic body is reduced, and vibration can be prevented with a small structure even on a heavy supported body.

It is a whole perspective view of the vibration isolating structure which concerns on Embodiment 1 of this invention. It is a figure which shows arrangement | positioning of the vibration proof mount in the vibration proof structure which concerns on Embodiment 1 of this invention. It is a disassembled perspective view of the vibration proof mount in the vibration proof structure which concerns on Embodiment 1 of this invention. It is a top view which shows the positional relationship of the to-be-supported body and vibration isolating mount in the vibration isolating structure which concerns on Embodiment 1 of this invention. It is a figure which shows the principle of the vibration proof in the vibration proof structure which concerns on Embodiment 1 of this invention. It is a figure which shows arrangement | positioning of the vibration proof rubber of the vibration proof mount in the vibration proof structure which concerns on Embodiment 1 of this invention. It is a figure which shows the principle of the vibration proof in the vibration proof structure which concerns on Embodiment 1 of this invention. It is a disassembled perspective view of an example of the anti-vibration mount in the anti-vibration structure concerning Embodiment 2 of this invention. It is a figure showing the shape of the anti-vibration rubber | gum and block of an anti-vibration mount in the anti-vibration structure which concerns on Embodiment 2 of this invention. It is a disassembled perspective view of the vibration proof mount in the vibration proof structure which concerns on Embodiment 3 of this invention. It is a whole perspective view of the vibration isolating structure which concerns on Embodiment 4 of this invention. It is a disassembled perspective view of the vibration isolating mount in the vibration isolating structure which concerns on Embodiment 4 of this invention.

Embodiment 1 FIG.
FIG. 1 shows the whole of a vibration isolating structure in Embodiment 1 for carrying out the present invention. In FIG. 1, a supported body 1 is a housing that houses an electronic device or the like that is mounted on a moving body, and has a rectangular parallelepiped structure. The supported body 1 includes an anti-vibration mount 2 having an anti-vibration structure, an anti-vibration mount 2a, an anti-vibration mount 2b (hidden by the supported body 1 and not shown), and an anti-vibration mount 2c. Used, the side surface near the bottom of the housing is supported at four points. The anti-vibration mounts 2, 2a, 2b, and 2c are anti-vibration mounts having equivalent functions. The anti-vibration mounts 2, 2a, 2b, 2c are fixed to the moving body with screws (mount fixing bolt screws 3).

FIG. 2 is a diagram showing the arrangement of the supported body 1 and the vibration isolation mount. As described above, the supported body 1 is supported by the vibration isolation mounts 2, 2a, 2b, and 2c having the same function. . The anti-vibration mount 2 supports the side surfaces 11a and 11b which are the first and second side surfaces of the supported body. Similarly, the anti-vibration mount 2a supports the side surfaces 11b and 11c, the anti-vibration mount 2b supports the side surfaces 11c and 11d, and the anti-vibration mount 2c supports the side surfaces 11d and 11a, respectively. X, Y, and Z shown in the drawings of FIGS. 1 to 10 are orthogonal coordinates defined with respect to the supported body 1, the direction perpendicular to the side surface 11a is the Y direction, and the side surface 11a is It becomes a surface in the XZ direction. The direction perpendicular to the side surface 11b is the X direction, and the side surface 11b is a surface in the YZ direction. The movable body on which the supported body is mounted vibrates in all three directions of X, Y, and Z shown in the figure, and the anti-vibration mounts 2, 2a, 2b, and 2c are separated from the movable body by the anti-vibration structure. 3D vibration in all directions is transmitted. In the following description, the X-direction component of the X, Y, and Z three-dimensional vibrations is defined as “X-direction vibration”, the Y-direction component as “Y-direction vibration”, and the Z-direction component. Expressed as “Z-direction vibration”. The anti-vibration mounts 2a, 2b, and 2c have the same functions as the anti-vibration mount 2 except that the place to support the supported body 1 and the side surfaces to be supported are different. The vibration mount 2 is used as a representative.

FIG. 3 shows the structure of the vibration isolating mount 2 shown in FIG. 1. The vibration isolating mount 2 includes the mount 4, elastic bodies (vibration isolating rubbers 5a and 5b), blocks 6a and 6b, plates 7a and 7b, and screws. (Equipment fixing bolts 8a and 8b). The anti-vibration rubber 5a is fitted into the opening 9a of the mount 4, and the anti-vibration rubber 5b is fitted into the opening 9b. Further, the block 6a is fitted into the through hole 10a of the anti-vibration rubber 5a, and the block 6b is fitted into the through hole 10b of the anti-vibration rubber 5b. It should be noted that each of the opening 9a and the anti-vibration rubber 5a of the mount 4, the opening 9b and the anti-vibration rubber 5b of the mount 4, the through-hole 10a and the block 6a of the anti-vibration rubber 5a, and the through-hole 10b and the block 6b of the anti-vibration rubber 5b. When determining the shape and dimensions, it is determined by taking into account the deformation due to the load during vibration, so that the vibration isolating rubbers 5a and 5b are not easily displaced during vibration.

The device fixing bolt 8a is tightened into a screw hole 12a provided on the side surface 11a of the supported body 1 to fix the block 6a and the plate 7a to the side surface 11a of the supported body 1. The device fixing bolt 8b is tightened into a screw hole 12b provided in the side surface 11b of the supported body 1 to fix the block 6b and the plate 7b to the side surface 11b of the supported body 1. In FIG. 3, in order to clarify the positions of the screw holes 12a and 12b, the screw holes 12a and 12b are displayed including a perspective view of the portions hidden by the vibration isolating rubbers 5a and 5b.

  The anti-vibration rubber 5a, the block 6a, the plate 7a, and the device fixing bolt 8a are on the side surface 11a side, and together with the mount 4, perform vibration isolation in the X-direction vibration and Z-direction vibration of the supported body 1, and elastic body 5b. The block 6b, the plate 7b, and the device fixing bolt 8b are on the side surface 11b side, and together with the mount 4, the vibration of the supported body 1 in the Y direction and the vibration in the Z direction are prevented, so that the supported body 1 is also supported. Vibrations in all directions in the X, Y, and Z directions can be prevented.

Since the block 6a is only fitted in the vibration isolating rubber 5a, only the compressive loads in the X direction and the Z direction act on the vibration in the X direction and the vibration in the Z direction. In particular, regarding the vibration in the X direction, since the center of gravity of the supported body is above the position supported by the vibration isolating mount, the position of the center of gravity of the supported body is inclined, and the block 6 moves the vibration isolating rubber 5a in the X and Z directions. In the anti-vibration rubber 5a, both the rubber in the vertical direction and the left-right direction of the block 6a act on the anti-vibration rubber 5a. The degree of contribution depends on each part of the anti-vibration rubber 5a. Depends on the dimensions. Since the anti-vibration rubber 5a receives the compressive load in the X direction and the Z-direction as described above, the anti-vibration rubber 5a is attached by attaching the plate 7a in parallel to the side surface 11a and contacting the anti-vibration rubber 5a. Prevents buckling by receiving compressive loads in the X and Z directions. Similarly, the plate 7b is attached in parallel to the side surface 11b and is kept in contact with the anti-vibration rubber 5b, thereby preventing the anti-vibration rubber 5b from buckling due to a compressive load in the Y direction and the Z direction. The plates 7a and 7b are fastened together with the device fixing bolts 8a and 8b together with the blocks 6a and 6b, respectively, and fixed. It should be noted that the plates 7a and 7b have outer edges of the anti-vibration rubbers 5a and 5b even if the deformation of the anti-vibration rubbers 5a and 5b due to the load at the time of vibration is expected so that they do not collide with the mount 4 even during vibrations in the Y and X directions. In principle, the shape should not protrude. However, even if the thickness of the anti-vibration rubbers 5a and 5b and the positional relationship between the anti-vibration rubbers 5a and 5b and the mount 4 are adjusted and the deformation of the anti-vibration rubbers 5a and 5b during vibration is taken into consideration, the plates 7a and 7b and the mount As long as 4 does not collide, the plates 7a and 7b may protrude from the outer edges of the anti-vibration rubbers 5a and 5b.

The opening surface of the opening 9a of the mount 4 is parallel to the side surface 11a in order to prevent vibration in the X direction and Z direction of the supported body 1, and the vibration isolating rubber 5a fitted in the opening 9a is A compressive load is received in the X and Z directions parallel to the side surface 11a. The through-hole 10a of the anti-vibration rubber 5a that receives a compressive load in the X direction and the Z direction parallel to the side surface 11a is substantially perpendicular to the side surface 11a, and the block 6a fitted in the through hole 10a has an X direction parallel to the side surface 11a. A compressive load is applied in the Z direction. The side surfaces of the anti-vibration rubber 5a and the block 6a are perpendicular to the side surface 11a and receive a compressive load in the X direction and the Z direction parallel to the side surface 11a.

Similarly, in order to prevent vibration in the Y direction and vibration in the Z direction of the supported body 1, the opening surface of the opening 9b of the mount 4 is parallel to the side surface 11b, and the vibration isolating rubber 5b fitted into the opening 9b. Receives compressive loads in the Y and Z directions parallel to the side surface 11b. The through hole 10b of the anti-vibration rubber 5b that receives a compressive load in the Y direction and the Z direction parallel to the side surface 11b is substantially perpendicular to the side surface 11b, and the block 6b fitted in the through hole 10b has a Y direction parallel to the side surface 11b. A compressive load is applied in the Z direction. The side surfaces of the anti-vibration rubber 5b and the block 6b are perpendicular to the side surface 11b and receive a compressive load in the X and Z directions parallel to the side surface 11b.

FIG. 4 is a view of the supported body 1 and the vibration isolating mount 2 as viewed from above, and shows the positional relationship between the supported body 1 and the mount 4. As already described, the anti-vibration rubber 5a and the block 6a (hidden in the figure) are fixed to the side surface 11a of the supported body 1 by the device fixing bolt 8a together with the plate 7a. Since it is only fitted into the opening 9a of the mount 4, it can move almost freely with respect to vibration in the Y direction. Since the vibration isolating rubber 5b provides anti-vibration against vibration in the Y direction, an appropriate gap 13 is provided between the supported body 1 and the mount 4 in consideration of the width of deformation of the vibration isolating rubber 5b during vibration. To avoid collisions during vibration. The same applies to the vibration in the X direction, and an appropriate gap 13 is provided between the supported body 1 and the mount 4 in consideration of the width of deformation of the vibration isolating rubber 5a during vibration to avoid collision during vibration. .

FIG. 5 shows the principle of vibration isolation of the vibration isolation mount 2. FIG. 5 shows the anti-vibration principle of the anti-vibration mount 2 on the side surface 11b side. As shown in FIG. 5, the periphery of the block 6b attached to the supported body 1 is surrounded by anti-vibration rubber 5b. ing. The anti-vibration rubber is generally a viscoelastic substance having viscosity and elasticity. The elasticity of the anti-vibration rubber has the same effect as the spring, and the viscosity has the same effect as the damper. The portions above and below the block 6b of the anti-vibration rubber 5b can be handled as spring dampers 14 and 15, respectively, and the left and right portions of the block 6b of the anti-vibration rubber 5b can be handled as springs and dampers 16 and 17, respectively. The spring function of the spring dampers 14 and 15 provides vibration isolation in the Z direction, and the spring function of the spring dampers 16 and 17 provides vibration isolation in the Y direction. For this reason, the spring constants of the spring dampers 14 to 17 are adjusted by adjusting the dimensions of the mount 4, the anti-vibration rubber 5 b, and the block 6 b, and flexibly set to the natural frequency that satisfies the requirements of the anti-vibration performance. be able to. The anti-vibration mount 2 uses the properties of the anti-vibration rubbers 5a and 5b as springs, adjusts the natural frequency by adjusting the spring constant, and has a frequency sufficiently higher than the natural frequency from the moving body to the supported body. Makes vibrations difficult to transmit. On the other hand, the anti-vibration mount 2 protects the device from vibrations by simultaneously using the vibration-absorbing rubber 5a, 5b as a damper to absorb the vibration energy, and also using the effect of damping the vibration itself. High effect on the top.

The anti-vibration principle for the side surface 11a of the anti-vibration mount 2 is different from the anti-vibration principle for the side surface 11b only in the direction of performing anti-vibration against vibration in the X direction and Z direction of the supported body 1. The function of the anti-vibration rubber 5a is the same as that of the anti-vibration rubber 5b. Regarding the function of the anti-vibration rubber 5b as the spring damper 18 in the X direction, the spring constant in the shear direction of the anti-vibration rubber 5b is smaller than the spring constant in the compression direction. For this reason, in the X direction, vibration isolation is performed with only the vibration isolation rubber 5a.

  When the vibration isolating rubbers 5a and 5b perform vibration isolating, it is necessary to design the anti-vibration rubbers 5a and 5b below the allowable stress in order to avoid damage to the vibration isolating rubbers 5a and 5b and a decrease in durability. . In order to make the stress applied to the anti-vibration rubbers 5a and 5b to a required value, it is necessary to adjust the area of the portion where the anti-vibration rubber 5a and the block 6a and the anti-vibration rubber 5b and the block 6b are in contact with each other. The supported body 1 is an electronic device, a housing that houses the electronic device, etc., and is heavier than a magnetic disk. Therefore, in order to reduce the stress of the vibration isolating rubbers 5a and 5b below the allowable stress, Corresponding to the weight of the support 1, it is necessary to increase the area of the portion where the anti-vibration rubber 5a and the block 6a and the anti-vibration rubber 5b and the block 6b are in contact with each other. On the other hand, by increasing the size of the blocks 6a and 6b and increasing the area in contact with the anti-vibration rubbers 5a and 5b, the spring constants of the springs and dampers 14 to 17 are increased and the natural frequency is also changed. For this reason, the natural frequency and the stress are adjusted to necessary values by adjusting the shapes of the blocks 6a and 6b and simultaneously adjusting the dimensions of the anti-vibration rubbers 5a and 5b.

In general, when vibration isolation is performed using vibration isolation rubber, the weight supported by each vibration isolation rubber is assumed to be W, the area of the vibration isolation rubber is assumed to be S, and the weight W is supported by the area S of the vibration isolation rubber. In this case, the stress applied to the anti-vibration rubber is about W / S, and in order to adjust the stress applied to the anti-vibration rubber, W / S is adjusted. On the other hand, the natural frequency is proportional to (K / W) ^1/2 for the dynamic spring constant K of the anti-vibration rubber and the weight W supported by each anti-vibration rubber. If the length of the anti-vibration rubber in the vibration direction is assumed to be L, the dynamic spring constant K of the anti-vibration rubber is proportional to (S / L), so adjust the (S / WL) for the natural frequency. Will do. Therefore, in the vibration isolating structure according to the first embodiment, when the weight of the supported body 1 is large, the vibration isolating rubber is formed by sufficiently widening the contact area between the anti-vibration rubbers 5a and 5b and the blocks 6a and 6b. After the stress applied to 5a and 5b is equal to or lower than the allowable stress, the vibration direction of vibration isolating rubbers 5a and 5b according to the natural frequency (vibration isolating rubber 5a is in the X direction and Z direction, and the vibration isolating rubber 5b is in the Y direction and The dimension in the Z direction may be adjusted.

By the way, as for the anti-vibration rubbers 5a and 5b, the anti-vibration rubber 5a performs the anti-vibration in the X direction and the Z direction, and it is not necessary to perform the anti-vibration in the Y direction. It is not necessary to perform vibration isolation in the X direction. For this reason, regarding the areas where the anti-vibration rubbers 5a and 5b are in contact with the blocks 6a and 6b, only the X-direction and Z-direction, and the Y-direction and Z-direction areas for anti-vibration are considered. For this reason, the shape of the blocks 6a and 6b can be made small, for example, a flat columnar shape or a long and narrow columnar shape, with a large area only in contact with the anti-vibration rubbers 5a and 5b. Further, the anti-vibration rubbers 5a and 5b surrounding the blocks 6a and 6b may have shapes that surround only the X direction and the Z direction of the block 6a and the Y direction and the Z direction of the block 6b, respectively. The size can be reduced as compared with a structure that prevents vibration in all directions in the X, Y, and Z directions. As described above, the vibration-proof rubbers 5a and 5b and the blocks 6a and 6b are reduced in size, so that the vibration-proof mount 2 can also be reduced in size, and the entire vibration-proof structure can be reduced in size.

As described above, the vibration isolating structure according to the first embodiment has shown that a small vibration isolating structure for the supported body 1 having a large weight can be obtained. Further, for the blocks 6a and 6b having columnar shapes, Considering the shape of the cross section, the size can be further reduced. In order to increase the contact area between the anti-vibration rubbers 5a and 5b and the blocks 6a and 6b, the side surfaces of the blocks 6a and 6b are composed of a combination of a flat surface and a curved surface, or the shape of the blocks 6a and 6b is a polygonal column. This is an effective means, and in this embodiment, as shown in FIG. 3 and the like, quadrangular columnar blocks 6a and 6b are used. The details of the shape of the block are designed by calculating the natural frequency and stress of the anti-vibration rubber for each direction of vibration. Further, the blocks 6a and 6b have a cross-sectional shape with rounded corners in order to prevent damage to the anti-vibration rubbers 5a and 5b.

The blocks 6a and 6b are fixed by two or more device fixing bolts 8a and 8b, respectively, in order to support a heavy housing and prevent the blocks 6a and 6b themselves from rotating. In this embodiment, the block is fixed with three screws. However, the arrangement and number of screws are determined in consideration of the forces acting on the blocks 6a and 6b at the time of design.

FIG. 6 is a view showing the arrangement of the anti-vibration rubbers 5 a and 5 b of the anti-vibration mount 2. Two anti-vibration rubbers 5a and 5b are attached to the mount 4, and the two are arranged orthogonally. By attaching the anti-vibration mount 2 with the anti-vibration rubbers 5a and 5b to the corners of the supported body 1 as shown in FIG. 2, the supported body 1 does not fall off even if it is not directly fixed to the mount 4. It becomes a structure.

In the first embodiment, the supported body 1 is a rectangular parallelepiped housing. However, if there is a surface on which the blocks 6a and 6b can be attached in two directions perpendicular to the supported body 1, the supported body 1 does not have a rectangular parallelepiped shape. It doesn't matter.

As described above, according to Embodiment 1, a small vibration-proof structure capable of performing vibration isolation in all three directions is obtained with respect to a heavy-weight supported body such as an electronic device or a casing including the electronic device. In the case where the supported body 1 is an antenna or the like, it is necessary not only to suppress the vibration but also to prevent the rocking vibration in order to prevent a shift in the beam directing direction. The rocking vibration is a vibration in which the supported body vibrates with a rotational motion, and is likely to occur when the center of gravity of the supported body is higher than the place supported by the anti-vibration mount. When the supported body performs a rotational motion, the orientation of the supported body changes, so that the beam directing direction also changes with the change in the orientation of the supported body, resulting in an error in the directing direction. In order to prevent the deviation of the beam directing direction, it is necessary not only to suppress the vibration of the supported body, but also to control the vibration so as to perform parallel movement by suppressing the change of posture even during the vibration of the supported body. .

FIG. 7 shows the relationship between the anti-vibration rubber 5b and the block 6b on the side surface 11b side of the anti-vibration mount 2. As described above, the dynamic spring constant K of the anti-vibration rubber is proportional to (S / L). Therefore, when the thickness of the anti-vibration rubber 5b and the block 6b is constant, the distance from the block to the end of the anti-vibration rubber ( The shorter the L), the greater the dynamic spring constant K. When the position of the center of gravity of the supported body 1 is higher than the support position of the anti-vibration mount 2, a force acting in the direction of rotating the supported body 1 is generated by vibration. When the shape of the anti-vibration rubber 5b is as shown in FIG. 7B, the spring constants of the vertical springs and dampers 14 and 15 of the anti-vibration rubber 5b are compared with the spring constants of the horizontal springs and dampers 16 and 17. Become bigger. In this case, since the force acting in the direction of rotating the supported body 1 is used for the lateral movement of the supported body 1, the posture of the supported body 1 does not change greatly, and the rocking vibration is suppressed. The On the other hand, if the shape of the anti-vibration rubber 5b is as shown in FIG. 7C, the spring constants of the horizontal spring dampers 16 and 17 are compared with the spring constants of the vertical spring dampers 14 and 15. growing. In this case, the force acting in the direction in which the supported body 1 is rotated is used for the vertical movement of the supported body 1 in the vicinity of the vibration isolating mount 2, so that it becomes a vibration that rotates the supported body 1 and rocks. Vibration occurs. For this reason, it is possible to suppress rocking vibration by making the shape of the anti-vibration rubber 5b and the block 6b as shown in FIG. 7B. In the above description, the control of the vibration direction is adjusted by the distance (L) from the block to the end of the vibration isolating rubber. However, the thickness of the vibration isolating rubber 5b and the block 6b is adjusted to You may adjust with the area (S) which the block 6b contacts.

  As described above, in this embodiment, the anti-vibration rubber 5a, the block 6a, the plate 7a, and the device fixing bolt 8a are provided on the side surface 11a side in each of the three-dimensional directions that require anti-vibration. The vibration-proof rubber 5b, the block 6b, the plate 7b, and the device fixing bolt 8b are provided on the side surface 11b side, and the mount 4 and the Y-direction of the supported body 1 are provided. By performing anti-vibration against vibrations in the Z direction, the size of each elastic body is smaller and the weight is increased compared to the case where all three directions are anti-vibrated with one elastic body (vibration-proof rubber). Vibration can be prevented from the support body with a small structure. Since each elastic body used in the vibration isolating structure may correspond to only two directions, the volume of the elastic body can be reduced. Further, since the anti-vibration rubbers 5 a and 5 b are arranged orthogonally, the supported body 1 has a structure that does not fall out even if it is not directly fixed to the mount 4.

Further, by supporting the anti-vibration rubbers 5a and 5b by the blocks 6a and 6b and increasing the contact area of the blocks 6a and 6b with the elastic body, it is possible to prevent the durability of the elastic body from being lowered. In addition, the spring constants of the spring dampers 14 to 17 can be set to arbitrary values by adjusting the dimensions of the anti-vibration rubbers 5a and 5b and the blocks 6a and 6b. The natural frequency satisfying the above performance can be set, and the influence of rocking vibration can be reduced by controlling the direction of vibration.

Embodiment 2. FIG.
FIG. 8 is an exploded perspective view of an example of the anti-vibration mount 21 having the anti-vibration structure according to Embodiment 2 for carrying out the present invention. In the first embodiment, the quadrangular columnar blocks 6a and 6b are used. However, when the antivibration mount 21 using the triangular columnar blocks 6c and 6d is used as shown in FIG. Since the area of the contact surface can be increased in the upward and lateral directions of the blocks 6c and 6d, a small vibration-proof structure can be obtained, and similar effects can be obtained by using a smaller block than in the first embodiment. Can be obtained. In FIG. 8, the vibration isolating mount 21 includes a mount 4, elastic bodies (vibration isolating rubbers 5c and 5d), blocks 6c and 6d, plates 7a and 7b, and screws (device fixing bolts 8a and 8b). The anti-vibration rubber 5c is fitted into the opening 9a of the mount 4, and the anti-vibration rubber 5d is fitted into the opening 9b. Further, the block 6c is fitted into the through hole 10c of the anti-vibration rubber 5c, and the block 6d is fitted into the through hole 10d of the anti-vibration rubber 5d.

Note that FIG. 8 only shows that the vibration isolating rubbers 5a and 5b are replaced with the vibration isolating rubbers 5c and 5d, and the blocks 6a and 6b are replaced with the blocks 6c and 6d, respectively. 9a and vibration isolating rubber 5c, the opening 9b and anti-vibration rubber 5d of the mount 4, the through hole 10c and block 6c of the anti-vibration rubber 5c, and the relationship between the shapes and dimensions of the through hole 10d and the block 6d of the anti-vibration rubber 5d, The method of fixing the block 6c and the plate 7a, the block 6d and the plate 7b, the positional relationship between the supported body 1 and the mount 4, the principle of anti-vibration by the anti-vibration rubbers 5c and 5d, and the arrangement of the anti-vibration mount 5a and 5b are the same as those in the first embodiment except that the anti-vibration rubbers 5c and 5d are replaced with the anti-vibration rubbers 5c and 5d, and the blocks 6a and 6b are respectively replaced with the blocks 6c and 6d.

8 shows an example in which the anti-vibration rubbers 5c and 5d corresponding to the triangular columnar blocks 6c and 6d are used, an example of the shape of the block is shown in FIG. FIG. 9 shows the structure of the vibration-proof mount on the side surface 11b side. FIG. 9A shows the structure using the square columnar blocks 6a and 6b already shown in the first embodiment. As shown in FIG. 8, b) uses triangular prism-like blocks 6c and 6d, but as shown in FIG. 9C, square pillar-shaped blocks 6g and 6h having a diamond-shaped cross section, Anti-vibration rubbers 5e and 5f for fitting 6g and 6f are used, or as shown in FIG. 9D, cylindrical blocks 6i and 6j and anti-vibration rubbers 5e and 5f for fitting the blocks 6g and 6f are used. In each of the cases, the area of the contact surface between the anti-vibration rubbers 5e and 5f and the blocks 6g and 6h or the anti-vibration rubbers 5g and 5h and the blocks 6i and 6j can be increased in the vertical and horizontal directions of the block. Small size protection A vibration structure can be obtained, and a similar effect can be obtained by using a smaller block than in the first embodiment. 9 (c) and FIG. 9 (d) show the anti-vibration rubbers 5a and 5b of the first embodiment as anti-vibration rubbers 5e and 5f or anti-vibration rubbers 5g and 5h, respectively, and blocks 6a and 6b. Except for the replacement with the blocks 6g and 6h or the blocks 6i and 6j, respectively, the details are omitted because they are the same as those in the first embodiment.

In addition, as to the shape of the block, either a triangular prism shape, a quadrangular prism shape (a rectangular cross section, a rhombus), or a cylindrical shape is selected, and the details of the shape are as follows. Depends on the value of anti-vibration rubber stress. Further, the blocks 6c, 6d, 6g, and 6h have a triangular shape and a rectangular shape with rounded corners in order to prevent damage to the anti-vibration rubbers 5c, 5d, 6g, and 6h.

Embodiment 3 FIG.
FIG. 10 is an exploded perspective view of an anti-vibration mount 22 having an anti-vibration structure according to Embodiment 3 for carrying out the present invention. In the first and second embodiments, the plates 7a and 7b are used to prevent buckling of the anti-vibration rubbers 5a, 5b or 5c and 5d. However, as shown in FIG. 7b may be integrated, and the anti-vibration mount 22 may be used to prevent buckling of the anti-vibration rubbers 5a and 5b at the ridge portion using blocks 6e and 6f having ridges. In FIG. 10, the anti-vibration mount 22 includes a mount 4, elastic bodies (anti-vibration rubbers 5a and 5b), blocks 6e and 6f, and screws (device fixing bolts 8a and 8b). The anti-vibration rubber 5a is fitted into the opening 9a of the mount 4, and the anti-vibration rubber 5b is fitted into the opening 9b. Further, the block 6e is fitted into the through-hole 10a of the vibration-proof rubber 5a, and 6f is fitted into the through-hole 10b of the vibration-proof rubber 5b.

The third embodiment is exactly the same as the first embodiment, except that the block 6a and the plate 7a are integrated into the block 6e, and the block 6b and the plate 7b are integrated into the block 6f. The shape of the opening 9a and the anti-vibration rubber 5a of the mount 4, the opening 9b and the anti-vibration rubber 5b of the mount 4, the through hole 10a and the block 6e of the anti-vibration rubber 5a, and the through hole 10b and the block 6f of the anti-vibration rubber 5b, The block 6a and the plate 7a are related to the dimensions, the fixing method of the block 6e and the block 6f, the positional relationship between the supported body 1 and the mount 4, the principle of vibration isolation using the vibration isolation rubbers 5a and 5b, and the arrangement of the vibration isolation mount. Except that block 6e is integrated and block 6b and plate 7b are integrated and replaced with block 6f. Yes, description thereof is omitted.

By integrating the block and the plate for preventing buckling as described above and using the blocks 6e and 6f having the flanges, in addition to the effects of the first embodiment or the second embodiment, components required for the vibration-proof structure There is an effect that the number can be reduced.

Embodiment 4 FIG.
FIG. 11 is an overall perspective view of a vibration isolating structure according to Embodiment 4 of the present invention. In the first to third embodiments, the anti-vibration mount 2 in which the structure for performing vibration isolation in the Y direction and the Z direction and the structure for performing vibration isolation in the X direction and Z direction is used. As described above, the anti-vibration mount 23 that performs vibration isolation in the X direction and the Z direction and the anti-vibration mount 24 that performs vibration isolation in the Y direction and the Z direction may be used. FIG. 12 shows the structure of the anti-vibration mounts 23 and 24. The anti-vibration mount 23 includes a mount 4a, an anti-vibration rubber 5a, a block 6a, a plate 7a, and a device fixing bolt 8a. , Mount 4b, anti-vibration rubber 5b, block 6b, plate 7b, and device fixing bolt 8b. The anti-vibration rubber 5a is fitted into the opening 9a of the mount 4a, and the anti-vibration rubber 5b is fitted into the opening 9b of the mount 4b. Further, the block 6a is fitted into the through hole 10a of the vibration isolating rubber 5a, and the block 6b is fitted into the through hole 10b of the anti vibration isolating rubber 5b. In the fourth embodiment, the anti-vibration mount 2 is divided into the anti-vibration mounts 23 and 24 with respect to the first embodiment, and the other components are the same as those of the first embodiment.

Since the principle of vibration isolation by the vibration isolation rubbers 5a and 5b is the same as that of FIG. 5 for the first embodiment, description thereof is omitted. As for the positional relationship between the supported body 1 and the mounts 4a and 4b, as in FIG. 4 in the first embodiment, an appropriate gap 13 is provided to avoid collision during vibration in the X direction and the Y direction. As for the arrangement of the anti-vibration mounts 23 and 24 when attached to the supported body 1, as a general rule, in the same manner as in FIG. 6 in the first embodiment, they are arranged so that they are orthogonal to each other at the four corners of the supported body 1. Anti-vibration mounts 23 and 24 are arranged. However, unlike the anti-vibration mount 2, since the anti-vibration mount 23 attached to the side surface 11a and the anti-vibration mount 24 attached to the side surface 11b are separated, the arrangement of the anti-vibration mounts 23 and 24 is made free, and the side surfaces 11a and 11b It is possible to attach to any position, and in the supported body 1 or the mobile body on which the supported body 1 is mounted, there is an effect that it is possible to perform vibration isolation even when the position where the vibration isolation mount is attached is limited. is there. Further, by arranging the anti-vibration rubber 5a of the mount 4a and the anti-vibration rubber 5b of the mount 4b so as to be orthogonal to each other, the supported body 1 has a structure that does not fall off even if it is not directly fixed to the mounts 4a and 4b.

DESCRIPTION OF SYMBOLS 1 Supported body 2, 2a, 2b, 2c, 21, 22, 23, 24 Anti-vibration mount 3 Mount fixing bolt screw 4, 4a, 4b Mount 5a, 5b, 5c, 5d, 5e, 5f, 5g, 5h Anti-vibration Rubber 6a, 6b, 6c, 6d, 6e, 6f, 6g, 6h, 6i, 6j Block 7a, 7b Plate 8a, 8b Equipment fixing bolt 9a, 9b Opening 10a, 10b, 10c, 10d Through hole 11a, 11b Side surface 12a, 12b Screw hole 13 Clearance 14, 15, 16, 17, 18 Spring damper

Claims (11)

A first block attached to the first side of the box-shaped support;
A first elastic body having a first through hole and having the first block fitted into the first through hole;
A first mount having a first opening and having the first elastic body fitted into the first opening;
A second block attached to a second side adjacent to the first side of the supported body;
A second elastic body having a second through hole and having the second block fitted into the second through hole;
A second mount having a second opening and having the second elastic body fitted into the second opening;
Anti-vibration structure with A box-shaped support;
A first block attached to the first side surface of the supported body;
A first elastic body having a first through hole and having the first block fitted into the first through hole;
A first mount having a first opening and having the first elastic body fitted into the first opening;
A second block attached to a second side adjacent to the first side of the supported body;
A second elastic body having a second through hole and having the second block fitted into the second through hole;
A second mount having a second opening and having the second elastic body fitted into the second opening;
Anti-vibration structure with The supported body has a substantially rectangular parallelepiped shape,
The first elastic body has the first through-hole drilled substantially perpendicularly to the first side surface,
An opening surface of the first opening is parallel to the first side surface;
The second elastic body has the second through hole that is drilled substantially perpendicularly to the second side surface,
The vibration-proof structure according to claim 1, wherein an opening surface of the second opening is parallel to the second side surface. The vibration isolating structure according to any one of claims 1 to 3, wherein the first mount and the second mount are integrated. The first block is fitted into the first through hole and fixed to the first side surface by a plurality of first screws.
The said 2nd block is engage | inserted by the said 1st through-hole, and is fixed to the said 2nd side surface with several 2nd screw, The any one of Claim 1 thru | or 4 characterized by the above-mentioned. Anti-vibration structure as described in 1. A first plate fixed parallel to the first side surface;
A second plate fixed in parallel to the second side surface,
The first elastic body is in contact with the first plate;
The vibration isolating structure according to claim 1, wherein the second elastic body is in contact with the second plate. The first plate is fixed together with the first block by the plurality of first screws,
The vibration isolation structure according to claim 7, wherein the second plate is fixed together with the second block by the plurality of second screws. The first block and the first plate are integral,
The vibration isolation structure according to claim 6, wherein the second block and the second plate are integrated. The first block has a columnar shape whose side surface has one or more planes and is substantially perpendicular to the first side surface,
9. The method according to claim 1, wherein the second block has a columnar shape whose side surface has one or more planes and is substantially perpendicular to the second side surface. 2. The anti-vibration structure according to item 1.   The vibration-proof structure according to claim 9, wherein the first block or the second block has a triangular cross section in a columnar shape.   The vibration-proof structure according to claim 9, wherein the first block or the second block has a quadrangular cross section in a columnar shape.

Images