JPH0229897B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a vibration isolating support, and the present invention relates to a fluid-filled elastic support that has excellent vibration isolating properties in high and low frequency ranges and is particularly suitable for use in automobile engine mounts. It is related to the support.

Conventional technology Conventionally, a structure in which a rubber block is interposed between two mounting brackets has been used as a vibration-proof rubber mount (vibration-proof support) for automobile engine mounts, body mounts, etc. If rubber with a small dynamic spring constant is used to reduce vibration and noise in the area, the loss coefficient of such rubber is small, and therefore the damping coefficient is also small, which fully satisfies the characteristics required of a vibration-proof rubber mount. I didn't get it. However, anti-vibration rubber mounts such as engine mounts have low dynamic spring characteristics to reduce vibration and noise in the high frequency range (near 100Hz), as well as reduce vibration in the low frequency range (near 15Hz). This is because it is required to have high attenuation characteristics (large loss coefficient) to achieve this.

In order to meet these demands, we have developed various types of elastic supports that utilize the elasticity of rubber and the flow action of fluids.
So-called fluid-filled mounts have been proposed, and damper devices or elastic buffer supports proposed in JP-A No. 53-5376 and JP-A-57-9340, etc. A rubber elastic body is provided on one side, and the rubber elastic body and the partition member define an operating chamber into which vibrations are input, and a flexible thin film or the like is provided on the other side of the partition member. An equilibrium chamber surrounded by a flexible member for absorbing changes in the internal pressure of the movable chamber is formed, and a predetermined incompressible fluid is sealed in the working chamber and the equilibrium chamber. A movable plate communicated with the equilibrium chamber via an orifice and supported by the partition member is provided so as to be movable a predetermined distance by pressure applied to the fluid in the working chamber. This is intended to provide effective vibration damping or insulation.

In other words, in general, in this type of fluid-filled mount, when high-frequency vibration is input, the fluid in the working chamber acts as a rigid body. Therefore, even if rubber with a low dynamic spring constant is used as the elastic body, the mount as a whole has a high dynamic spring constant, making it difficult to achieve an effective vibration reduction effect. This effectively eliminates the problem, and also prevents the free movement of the movable plate when low frequency vibrations are input, thereby allowing the fluid to flow from the working chamber to the equilibrium chamber through the orifice. By increasing the loss coefficient of the mount as a whole through the effects of flow resistance and fluid resonance, it is possible to effectively exhibit damping characteristics against low-frequency vibrations.

In the case of a fluid-filled mount having a structure using such a movable plate, the tuning of the vibration damping characteristics due to the fluid flowing inside the orifice is determined by the cross-sectional area of the orifice: A, the length: 1, and It is known that the larger the amount of fluid flowing through the orifice, the more effective the vibration damping effect will be. In order to effectively obtain a damping effect against input vibrations in the frequency range, it is desirable to set the length l of the orifice long to ensure a large flow passage cross-sectional area A.

Problems By the way, the fluid-filled mounts using a movable plate proposed in JP-A-53-5376 and JP-A-57-9340 have cleverly solved the problems inherent in conventional fluid-filled mounts. However, in the case of a fluid-filled mount with such a structure, the partition member that separates the working chamber and the equilibrium chamber must be provided with a predetermined orifice to allow these chambers to communicate with each other. There is a problem in that the structure of such a partition member is extremely complicated because it is necessary to provide a certain size and length and to support the movable plate so that it can be moved a predetermined distance. This increases the cost, complicates and troublesome assembly work, and furthermore, increases the size of the partition member itself, resulting in an increase in the size of the entire mount.

In particular, in order to obtain the desired loss coefficient in the low frequency range, it is necessary to increase the length of the orifice in order to ensure a large orifice diameter. If the structure is simply a hole or a connecting pipe, it is impossible to increase the length of the orifice. , or even if the orifice is formed by providing a notched groove in the end face of the peripheral edge of the plate-shaped body, the length of the orifice can only be up to the maximum circumferential length of the plate-shaped body, and the length of the orifice cannot be longer than that. It was impossible to form an orifice with a length of .

Solution The present invention has been made in order to solve the problems in the conventional fluid-filled mount that uses a movable plate, and its gist is that In the fluid-filled mount, the partition means for partitioning the working chamber and the equilibrium chamber is configured such that (a) a first recess extending in the circumferential direction is formed on one side surface, and a first recess extending in the circumferential direction is formed on the other side surface; (b) a plate-like body in which an extending second recess is formed and the first and second recesses communicate with each other via a through hole; (c) a second cap member that covers the second recess of the plate-like body and forms a second fluid passage that extends in the circumferential direction; The peripheral edges of the plate-shaped main body, the first cap member, and the second cap member are attached and supported by a retainer member made of a rubber elastic body, which is the main body of the mount, with a caulking fixing structure, An orifice is formed in the first fluid passage and the second fluid passage, and the first fluid passage is connected to either one of the working chamber and the equilibrium chamber partitioned by the partitioning means, and the second fluid passage is connected to the first fluid passage. A movable plate is accommodated between the first cap member and the plate-shaped body located inside the orifice, while communicating the fluid passages with the other of the working chamber and the equilibrium chamber, respectively. a hole in which the first cap member portion and the plate-shaped main body portion forming the hole can be moved a predetermined distance; The pressure of the incompressible fluid within the working chamber is applied to the equilibrium chamber through movement of the accommodated movable plate.

Effects of the Invention Therefore, in the structure according to the present invention, with respect to the plate-shaped body provided with the first and second recesses, which are the central members constituting the partitioning means, the first recess can be viewed from both sides. By stacking the cap member and the second cap member to cover the first and second recesses, respectively, and fixing them by caulking, two fluid passages constituting orifices are skillfully formed on both sides of the plate-like body. This effectively increases the length of the orifice.

Moreover, by overlapping the first and second cap members with respect to the plate-like main body for forming such a partition means, a cavity in which the movable plate is accommodated is simultaneously formed, and thereby the partition means The configuration has been significantly simplified, and the assembly work has also been simplified.
This is done by simply caulking the peripheral edges of these three members, so it can be done very easily, and two annular fluid passages are cleverly formed on both the upper and lower sides of the plate-shaped body. Therefore, although the length of the orifice is increased, the structure of the partitioning means is extremely simplified and simplified.

The plate-like body constituting the partitioning means used in the present invention can be easily manufactured by cutting or casting a thick plate, and the first and second caps can be easily manufactured by cutting or casting a thick plate. Since the parts can be easily manufactured by press working, the manufacturing cost can be significantly reduced.

EXAMPLES Hereinafter, in order to clarify the present invention more specifically, examples of the present invention will be described in detail based on the drawings.

First, FIGS. 1 to 3 show an example of an engine mount that is an embodiment of the present invention.
Here, reference numeral 2 denotes a support fitting as one of the mounting fittings, and this support fitting 2 is a round-bottom pot-shaped seat 6 fixed to one side of a flat plate 4.
It also has a mounting bolt 8 fixed to the engine side member so as to protrude to the other side. To such a support fitting 2, a rubber block 10 formed in a ring shape and having a conical cylindrical shape (figure 8 cross section) is integrally fixed ( A bottom metal fitting 12 is integrally fixed to the bottom of the other end of the rubber block 10 (vulcanized adhesive). The supporting metal fitting 2 and the bottom metal fitting 12 can be easily manufactured as an integral member by being vulcanized and bonded at the same time when the rubber block 10 is vulcanized and molded.

A mounting bracket 14 is attached to the lower side of the bottom metal fitting 12 by welding or the like, and the bottom metal fitting 12 and the mounting bracket 14 constitute a retainer member. In addition, in the cylindrical portion extending downward of this mounting bracket 14,
The peripheral edge of the protective cap 16 is fixed by caulking. Although not shown, this protective cap 16 is provided with a through hole for allowing air to circulate inside and outside. Furthermore, this bottom metal fitting 12
The retainer member consisting of the and mounting bracket 14 is
As shown in FIG. 3, it can be attached to a predetermined member on the vehicle body side through a mounting hole 18 provided in the outer flange portion.

Additionally, within the engine mount, there is a
A disk-shaped partitioning means 20 is provided, and in a form partitioned by this partitioning means 20, an operating chamber 30 is formed within the conical cylinder-shaped rubber block 10. Note that this partitioning means 20 is
As will be described later, a thick plate-shaped main body 22, a short hat-shaped cap fitting 24, and an annular backing plate 26
When they are stacked one on top of the other, they are housed in the cylindrical portion of the mounting bracket 14, and are attached and supported by the crimping and fixing action of the mounting bracket 14. Further, in such a partitioning means 20, an elastic and flexible movable plate 28 made of a rubber material is housed in a space formed by overlapping the plate-shaped main body 22 and the cap fitting 24. Retained.

The space below the partitioning means 20 is connected to the peripheral edge of the partitioning means 20 and the protective cap 1.
The diaphragm 34 is interposed between the peripheral flange portion of the partitioning means 6 and the peripheral flange portion of the partitioning means 6, and the partitioning means 20 is partitioned off in a fluid-tight manner by a diaphragm 34 as a flexible thin film whose peripheral edge is held together with the partitioning means 20. An equilibrium chamber 32 with a variable volume is formed between the two. Note that a predetermined incompressible fluid 36 such as water, alkylene glycol, polyalkylene glycol, silicone oil, or a low molecular weight polymer is sealed in the equilibrium chamber 32 and the working chamber 30, respectively.

By the way, in this engine mount, there is a partition means 2 that partitions the working chamber 30 and the equilibrium chamber 32.
As shown in the figure, the plate-shaped main body 22, which is the main component of the 0, is formed of a rigid and relatively thick plate-shaped body made of a material such as metal or plastic. In this case, the partition means 20 has a structure that does not substantially deform. Further, the cap fitting 24 and the backing plate 26 that are combined with the thick plate-like main body 22 are also made of a rigid plate-like material such as a metal material, and here, a pressed metal plate is used. It is used.

As shown in FIGS. 4a to 4d, the plate-shaped main body 22, which is the central member of the partitioning means 20, is attached to the periphery of one surface (upper surface) of a thick-walled disk-shaped plate. , has a two-stage shape in which a low step portion 40 extending in the circumferential direction is formed as a first recess, and a storage recess 42 of a predetermined depth is provided in the high step portion in the center thereof, A plurality of working holes 44 are bored at the bottom of the accommodation recess 42 . Furthermore, a convex portion 46 is formed that protrudes radially outward from this high step portion and partitions the low step portion 40, and this convex portion 46 allows the annular low step portion 40 to
is cut off in a part of the circumferential direction, making it discontinuous.

On the other hand, the other surface (lower surface) of the plate-like main body 22
On the side, a circumferential groove 48 extending in the circumferential direction at a position substantially corresponding to the low step part 40 is formed as a second recess at the peripheral edge thereof, and is located inside the circumferential groove 48. In the center of the thick plate,
A recess 50 that forms part of the equilibrium chamber 32 is formed. Note that this circumferential groove 48 is interrupted at a portion in the circumferential direction, and is a discontinuous and incomplete circumferential groove. One end of the circumferential groove 48 is communicated with the recess 50 via a notch 52, and at the other end of the circumferential groove 48, which is an incomplete circumferential groove, a through hole passes through the plate thickness direction. A hole 54 is provided so that the low step portion 40 on one side of the plate-like main body 22 and the circumferential groove 48 on the other side communicate with each other through the through hole 54 .

Further, a cap metal fitting 2 that is crowned on the side of the plate-like main body 22 on which the low step portion 40 is provided is also provided.
4 has a shallow cylindrical portion 56 with a bottom and an outer flange portion 58 provided around the opening of the cylindrical portion 56, as shown in FIGS. 5a and 5b. Near the center of the bottom, in other words, the plate-like body 2
A plurality of operation holes 60 are provided in a portion of the plate-like main body 22 that corresponds to the housing recess 42 when the plate-like main body 22 is covered with a metal plate. A communication hole 62 is provided to allow communication between the lower step portion 40 side and the working chamber 30 side. In addition, the height of the cap metal fitting 24 which is crowned on the plate-like main body 22 in this way to the inner surface of the bottomed cylindrical part 56 is the height of the high step part of the plate-like main body 22, in other words, the height of the cap metal fitting 24 that is crowned on the plate-like main body 22 is The depth is approximately the same as that of the portion 40.

By fitting the cap metal fitting 24 onto the plate-like main body 22 in this way, the first
As shown in the drawings and FIG. 3, an annular fluid passage 64 serving as a first fluid passage is formed between the low step portion 40 of the plate-like main body 22 and the cylindrical wall portion of the cap fitting 24. . Therefore, the cap metal fitting 24 here constitutes the first cap member.

Furthermore, the contact plate 26, which is another member constituting the partition means 20, has an annular shape with its inner peripheral edge slightly bent, as shown in FIGS. 6a and 6b. There is. Then, by overlapping such a contact plate 26 so as to cover the circumferential groove 48 of the plate-like main body 22, an annular fluid passage 66 as a second fluid passage is formed in the plate-like main body 22. It will be formed on the other side. Note that here, the contact plate 26 serves as the second cap member.

Therefore, by using the plate-shaped main body 22, cap metal fitting 24, and abutment plate 26 that constitute such a partitioning means 20, the cap metal fitting 24 can be covered on the side where the low step portion 40 of the plate-shaped main body 22 is provided. While crowning
By stacking the contact plates 26 so as to cover the circumferential groove 48 provided on the opposite surface and assembling them into the engine mount using the caulking fixing structure as described above, each side of the plate-like main body 22 can be The formed annular fluid passages 64 and 66 are communicated through the through hole 54, and the annular fluid passage 64 formed in the low step portion 40 is communicated with the working chamber 30 through the communication hole 62 of the cap fitting 24. On the other hand, the annular fluid passage 66 formed by the circumferential groove 48 is communicated with the equilibrium chamber 32 via the notch 52, and an orifice that communicates the working chamber 30 and the equilibrium chamber 32 is provided here as a partition. It will be formed within the means 20.

When the cap metal fitting 24 is placed on the plate-shaped main body 22, the movable plate 28 moves the plate-shaped main body 22.
The cap metal fitting 24 is placed in a state where the storage recess 42 is covered with the bottom of the cap metal fitting 24 by the crown of the cap metal fitting 24. Therefore, this plate-like main body 2
The movable plate 28 is housed in a storage recess 42 formed between the cap metal fitting 24 and the plate-shaped main body 22 and the cap metal fitting 24.
and 60, the movable plate 28 is brought into contact with the incompressible fluid 36 in the working chamber 30 and the equilibrium chamber 32, respectively, so that the pressure of the incompressible fluid 36 in the working chamber 30 acts on the movable plate 28. When this occurs, the movable plate 28 is moved a predetermined distance, thereby transmitting the pressure to the equilibrium chamber 32 side.

Note that such movement of the movable plate 28 is performed in the accommodation recess 4.
2, and the bottom portion of the bottomed cylindrical portion 56 of the cap fitting 24 facing thereto.

Therefore, the engine, transmission, etc. can be integrated into an engine mount having such a structure by using the mounting bolt 8 of the support fitting 2, the bottom metal fitting 12 constituting the retainer member, and the mounting hole 18 of the mounting bracket 14. By interposing the movable plate 28 between the power unit and the vehicle body, the movable plate 28 can withstand vibration input in both high and low frequency ranges.
and orifices 62, 64, 54, 66, 52
Due to the presence of , excellent low dynamic spring characteristics and high damping characteristics are exhibited.

That is, when high frequency vibration is input, the pressure applied to the incompressible fluid 36 in the working chamber 30 is
A space between the plate-like main body 22 and the cap metal fitting 24 constituting the partition means 20, in other words, the accommodation recess 4
The movable plate 28, which is housed in the cap metal fitting 24 so as to be movable a predetermined distance, is actuated through the action hole 60 of the cap metal fitting 24, and by the movement of the movable plate 28, it is balanced through the action hole 44 of the plate-like main body 22. The spring characteristics of the rubber block 10 can be effectively utilized.
As a result, the overall dynamic spring constant can be made low, and vibration noise in the targeted high frequency range can be effectively reduced.

On the other hand, when low frequency vibration is input, cap metal fittings 24 are placed on both sides of the plate-like main body 22.
Orifice 6 formed by overlapping contact plates 26
2, 64, 54, 66, 52, the working chamber 3
0 and the equilibrium chamber 32, an effective flow of the incompressible fluid 36 contained in each chamber is induced, and energy loss is formed due to such flow resistance, fluid resonance, etc. Therefore, an effective large loss coefficient can be obtained, and a high damping effect against low frequency vibrations can be exhibited.

In the engine mount having such a structure, the partitioning means 20 is composed of a predetermined plate-shaped main body 22, a cap metal fitting 24 and a contact plate 26 combined with this, and by assembling these parts, the partitioning means 20 is composed of a predetermined plate-shaped main body 22, and a cap fitting 24 and a contact plate 26 that are combined with this plate-shaped main body 22. Two annular fluid passages 6 on both sides of 22
4 and 66 are skillfully formed and they constitute an orifice, so compared to the conventional structure where the orifice length is only one circumference of the partition member, the maximum length of the orifice is However, it is possible to form an orifice twice that length. Moreover, since the cross-sectional diameter (cross-sectional area) of the annular fluid passages 64 and 66 can be relatively large, the orifice diameter can be made large, and the orifice length can be increased as described above. This made it possible to effectively increase the loss coefficient in the area.

In addition, in this embodiment, the cap metal fitting 24
A communication hole 62 is provided in the cap metal fitting 24 so that the cap metal fitting 24 can communicate with the working chamber 30 through the communication hole 62. 24 relative to the plate-like body 22, in other words, by appropriately selecting the position of the communicating hole 62 provided in the cap fitting 24 in the circumferential direction with respect to the through-hole 54 of the plate-like body 22. Then,
The length of the annular fluid passage 64 formed by the cap fitting 24 and the low step portion 40 of the plate-like main body 22 that functions as an orifice can be arbitrarily selected. That is, the length of the orifice in the annular fluid passage 64 is substantially the length between the communication hole 62 of the cap fitting 24 and the through hole 54 of the plate-shaped main body 22. As a result, the length of the orifice is determined by the partitioning means 20 (plate-like body 2
The length can be arbitrarily set between 1 and 2 times the circumferential length of 2).

The partition means 20 in the engine mount having such a structure can have a plate-like main body 22 formed by cutting or aluminum casting, and the cap fittings 24 and the plate 26 can be formed by press working or punching. Since it is possible to use press-formed products formed by This also simplifies the assembling process, and since it is only necessary to overlay them and secure them by caulking, the assembling process becomes extremely easy.

In this embodiment, the space in which the movable plate 28 is accommodated is provided with the accommodation recess 42 in the high step part of the plate-like main body 22, and the bottom part of the bottomed cylindrical part 56 of the cap metal fitting 24 is capped. It is designed to consist of a predetermined gap formed between the
On the contrary, the bottom of the bottomed cylindrical portion 56 of the cap fitting 24 is formed into a two-stage bottom that protrudes outward, and a movable plate is housed between the bottom and the high-stage portion of the plate-like main body 22. It is also possible to form a void,
Furthermore, the accommodation recess 4 together with such an outwardly projecting recess
2 may be provided at the same time to serve as a movable plate accommodation space.

Further, it is preferable that the cap metal fitting 24 and the backing plate 26 combined with the plate-shaped main body 22 are press-formed products formed by press working or punching, thereby reducing the manufacturing cost. Although the partitioning means 20 and, by extension, the mount can be made inexpensive, they are not limited to this, and may be manufactured using any other suitable molding or manufacturing method. Similarly, the plate-shaped main body 22 can also be manufactured according to an appropriate method.

The first and second recesses extending in the circumferential direction provided on both sides of the plate-like main body 22 are not limited to the illustrated structure.
For example, the low step portion 40 as in the previous example as the first recess.
Instead, it is also possible to have a circumferential groove structure similar to the circumferential groove 48, which is the second recess.

Further, in the above example, the partition means 20 is assembled so that the side on which the cap fitting 24, which is the first cap member, is placed is located on the working chamber 30 side. In other words, the annular fluid passage 66 is connected to the notch 52 so that the side on which the abutment plate 26, which is a cap member, is disposed is the working chamber 30 side.
There is no problem in assembling it so that it communicates with the working chamber 30 via.

Further, in the above example, an example in which the present invention is applied to an engine mount has been described, but the present invention can also be applied to other anti-vibration supports such as body mounts.

Furthermore, although not illustrated, various improvements, modifications, changes, etc. can be made to the present invention based on the knowledge of those skilled in the art without departing from the spirit of the present invention. It goes without saying that the invention also includes such embodiments.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view showing an example of an engine mount according to the vibration-proof support of the present invention, and corresponds to the - cross section in FIG. 2, and FIG. 2 is a plan view of such an engine mount, FIG. 3 is a - sectional view in FIG. 2. Figure 4a,
b, c, and d show the plate-like body constituting the partition means in such an engine mount, a is a plan view thereof, b is a bottom view, c is a sectional view taken along line A-A in a, and d is a cross-sectional view thereof. FIG. 5 is a perspective view, and FIGS. 5a and 5b show a cap fitting constituting such a partitioning means, where a is a plan view thereof, and b is a plan view thereof.
is a BB sectional view at a, and Fig. 6 a, b
1 shows a contact plate constituting such a partitioning means, a is a plan view thereof, and b is a C-C in a.
FIG. 2: Support metal fittings, 10: Rubber block, 12: Bottom metal fittings, 14: Mounting brackets, 20: Partition means, 22: Plate-shaped main body, 24: Cap metal fittings, 2
6: Contact plate, 28: Movable plate, 30: Working chamber, 32:
Equilibrium chamber, 34: Diaphragm, 36: Incompressible fluid, 40: Low step part (first recess), 42: Accommodation recess, 44: Working hole, 46: Convex part, 48: Circumferential groove (second recess), 50: recess, 52: notch, 54:
Through hole, 60: Working hole, 62: Communication hole, 64, 6
6: Annular fluid path.

Claims (1)

[Scope of Claims] 1. A rubber elastic body is provided on one side of the partition means, and the rubber elastic body and the partition means define an operating chamber into which vibrations are input, and the other side of the partition means An equilibrium chamber for absorbing changes in the internal pressure of the working chamber is formed with an enclosure at least partially made of a flexible thin film on the side, and a predetermined incompressible fluid is sealed in the working chamber and the equilibrium chamber. On the other hand, the working chamber and the equilibrium chamber are communicated with each other through an orifice, and a movable plate supported by the partition means is provided so as to be movable a predetermined distance by the pressure applied to the fluid in the working chamber. In the vibration isolating support, the partitioning means is configured such that: (a) a first recess extending in the circumferential direction is formed on one side surface, and a second recess similarly extending in the circumferential direction is formed on the other side surface; (b) a first plate-shaped body that covers the first concave part of the plate-shaped body and extends in the circumferential direction; (c) a second cap member that covers the second recess of the plate-like body and forms a second fluid passage that extends in the circumferential direction; Attaching the peripheral edges of the plate-shaped main body, the first cap member, and the second cap member to the retainer member of the rubber elastic body with a caulking fixing structure;
By supporting, the orifice is formed in the first fluid passage and the second fluid passage, and the first fluid passage is formed in either the working chamber or the balance chamber, and the orifice is formed in the first fluid passage and the second fluid passage. The movable plate is accommodated between the first cap member and the plate-shaped body located inside the orifice, while communicating the fluid passage with the other of the working chamber and the equilibrium chamber. a hole in which the first cap member portion and the plate-shaped main body portion forming the hole can be moved a predetermined distance; A vibration isolating support body, characterized in that the pressure of the incompressible fluid in the working chamber is applied to the equilibrium chamber side through movement of a movable plate accommodated therein. 2. The plate-like main body constituting the partitioning means has the first recess formed by a low step portion formed on the periphery of one side of the thick plate, and The second recess is formed by a circumferential groove formed on the periphery of the other surface of the body, and the balance chamber is located in the central portion of the thick plate body located inside the circumferential groove. The vibration isolating support according to claim 1, wherein a recess is formed, and the recess and the circumferential groove are communicated through a communication portion provided in the thick plate body. . 3. The first cap member has a shallow bottomed cylindrical part and an outer flange part provided around the opening thereof, and the thick plate body is covered by the first cap member. The first fluid passage is formed in the lower step of the cap member, and the first fluid passage is communicated with the working chamber through a communication hole provided in the first cap member. Claim 2, wherein the second cap member has an annular shape, and the circumferential groove is covered by the annular second cap member to form the second fluid passage. anti-vibration support. 4. The first recess and the second recess are formed in the first recess and the second recess so that the first fluid passage and the second fluid passage formed on each side of the plate-like main body are each blocked at one location in the circumferential direction. The vibration isolation support according to any one of claims 1 to 3, wherein each discontinuous portion is provided. 5. An accommodation recess with a predetermined depth is formed in the center of the surface of the plate-like main body on the side where the first recess is provided, and the movable plate is accommodated in the accommodation recess, and the movable plate is accommodated in the accommodation recess. The vibration-proof support according to any one of claims 1 to 4, wherein the accommodation recess is covered by one cap member.