Vibration isolation device

Abstract

In a vibration isolation device, an elastic stopper (30) provided between a first mounting member (11) and a second mounting member (12) includes a first stopper portion (31) having a pair of stopper walls (31a) and a second stopper portion (32) to which the pair of stopper walls are connected by a link portion (33) extending in a first direction, the first stopper portion, the second stopper portion, and the link portion being formed integrally. A pair of restriction portions (35, 39) are provided in the first mounting member to clamp at least one of the first stopper portion and the second stopper portion and the link portion, restrict the first stopper portion and the link portion from approaching each other in a third direction, and pull a connection portion (31b) of the first stopper portion connected to the link portion in the third direction.

Description

Technical Field

[0001] This invention relates to a vibration isolation device.

[0002] This application claims priority based on Japanese Patent Application No. 2021-080333, filed in Japan on May 11, 2021, the contents of which are incorporated herein by reference. Background Technology

[0003] A vibration isolation device is known in the past, comprising: a first mounting member installed on either a vibration generating part or a vibration receiving part, and a second mounting member installed on either the vibration generating part or the vibration receiving part; an outer cylinder installed on the first mounting member and an inner member installed on the second mounting member; and an elastic body that connects the outer cylinder and the inner member to each other. The second mounting member has a pair of first wall portions covering the first mounting member from both sides in a first direction. An elastic stop member installed on the first mounting member is provided between the first mounting member and the second mounting member. The elastic stop member has a pair of stop walls respectively provided between the pair of first wall portions and the first mounting member.

[0004] Existing technical documents

[0005] Patent documents

[0006] Patent Document 1: Japanese Patent Application Publication No. 2014-66334 Summary of the Invention

[0007] The problem the invention aims to solve

[0008] In conventional vibration isolation devices, if the stop wall is not bonded to the first mounting member, the elastic stop member may become misaligned relative to the first mounting member when assembled, for example, in a vehicle.

[0009] Furthermore, it is difficult to add a stop portion that is provided in a direction other than the first direction opposite to the pair of first wall portions without increasing the number of parts.

[0010] The present invention was made with regard to such a situation in mind, and aims to provide a vibration isolation device that can suppress the increase in the number of components, can respond to multiple input directions of vibration, and can suppress the misalignment of the elastic stop relative to the first mounting member even without bonding.

[0011] Solution for solving the problem

[0012] The vibration isolation device of the first aspect of the present invention comprises: a first mounting member mounted on either a vibration generating part or a vibration receiving part, and a second mounting member mounted on the other of the vibration generating part and the vibration receiving part; an outer cylinder mounted on the first mounting member; an inner cylinder mounted on the second mounting member and inserted into the inner side of the outer cylinder; an elastic body connecting the inner circumferential surface of the outer cylinder to the outer circumferential surface of the inner cylinder; and an elastic stop member disposed between the first mounting member and the second mounting member, the second mounting member comprising: a pair of first wall portions covering the first mounting member from both sides in a first direction; and a second wall portion connecting the pair of first wall portions to each other and covering the first mounting member in a second direction intersecting the first direction, the elastic stop member comprising: a first stop portion having a first stop portion having a first stop portion having a second stop portion connecting the first wall portions to the second wall portion. A pair of stop walls are respectively provided between the first wall portion and the first mounting member; and a second stop portion is provided between the second wall portion and the first mounting member. The pair of stop walls are connected in the first direction by the second stop portion and a connecting portion extending in the first direction. The connecting portion is provided such that it is separated from the second stop portion in a third direction that intersects the first direction and the second direction. The first stop portion, the second stop portion and the connecting portion are integrally formed. A pair of limiting portions are provided on the first mounting member. The pair of limiting portions lock at least one of the first stop portion and the second stop portion and the connecting portion, restricting the first stop portion and the connecting portion from approaching each other in the third direction, and pulling the connecting portion of the first stop portion connected to the connecting portion in the third direction.

[0013] The effects of the invention

[0014] According to the present invention, it is possible to suppress the increase in the number of parts, and to respond to multiple input directions of vibration, and to suppress the misalignment of the elastic stop relative to the first mounting member even without bonding. Attached Figure Description

[0015] Figure 1 This is a side view of the vibration isolation device according to the first embodiment, viewed from the first direction.

[0016] Figure 2 yes Figure 1 A side view of the vibration isolation device as seen from the second direction.

[0017] Figure 3 yes Figure 2 Sectional view along line III-III.

[0018] Figure 4 This is a side view of the vibration isolation device according to the second embodiment, viewed from the first direction.

[0019] Figure 5 yes Figure 4 A side view of the vibration isolation device as seen from the second direction.

[0020] Figure 6 yes Figure 5 Sectional view along line VI-VI. Detailed Implementation

[0021] The following is for reference Figures 1-3 The first embodiment of the vibration isolation device is described.

[0022] The vibration isolation device 1 includes: a first mounting member 11 installed on either the vibration generating part or the vibration receiving part, and a second mounting member 12 installed on either the vibration generating part or the vibration receiving part; an outer cylinder 13 installed on the first mounting member 11 and an inner cylinder 14 installed on the second mounting member 12 and inserted into the inner side of the outer cylinder 13; and an elastic body 15 that connects the inner peripheral surface of the outer cylinder 13 and the outer peripheral surface of the inner cylinder 14 to each other.

[0023] Vibration isolation device 1 is installed in, for example, a car to suppress the transmission of engine vibration to the vehicle body. In vibration isolation device 1, a second mounting member 12 is mounted on the engine (not shown), which is a vibration generating part, and a first mounting member 11 is mounted on the vehicle body, which is a vibration receiving part. Alternatively, the first mounting member 11 may be mounted on the vibration generating part and the second mounting member 12 may be mounted on the vibration receiving part.

[0024] The first mounting component 11 includes a mounting cylinder 21 and a base portion 22.

[0025] The base portion 22 includes a seat plate portion 23 and two support plate portions 24.

[0026] The seat plate portion 23 is fixed to either the vibration generating portion or the vibration receiving portion. The support plate portion 24 protrudes from the seat plate portion 23. The two support plate portions 24 are arranged with their back surfaces facing each other.

[0027] Hereinafter, the direction in which the support plate portion 24 protrudes from the seat plate portion 23 will be referred to as upward, and the opposite direction will be referred to as downward. The direction in which the two support plate portions 24 are opposite to each other will be referred to as the first direction X.

[0028] A mounting hole 24a opening upwards is formed in the support plate portion 24. The mounting hole 24a penetrates the support plate portion 24 in the first direction X. A mounting cylinder 21 is fitted and fixed in the mounting hole 24a. The mounting cylinder 21 engages with the support plate portion 24. The mounting cylinder 21 connects the two support plate portions 24 in the first direction X. The upper end of the mounting cylinder 21 protrudes upwards from the upper edge of the support plate portion 24. An outer cylinder 13 is fitted and fixed inside the mounting cylinder 21.

[0029] The outer cylinder 13 and the inner cylinder 14 are arranged coaxially with a common axis O. The common axis O extends in the first direction X. Alternatively, the common axis O may extend in a direction intersecting the first direction X. The two ends of the inner cylinder 14 in the first direction X protrude from the outer cylinder 13 in the first direction X, respectively.

[0030] The second mounting member 12 includes: a pair of first wall portions 26 that cover the first mounting member 11 from both sides in the first direction X; and a second wall portion 27 that connects the pair of first wall portions 26 to each other and covers the first mounting member 11 in the second direction Y that intersects the first direction X.

[0031] The two ends of the first wall portion 26 and the inner cylinder 14 in the first direction X are respectively connected.

[0032] The second wall portion 27 separates from the support plate portion 24 in the second direction Y. The second wall portion 27 connects the ends of the pair of first wall portions 26 in the second direction Y to each other. The second direction Y is orthogonal to the first direction X and the vertical direction.

[0033] Hereinafter, the up-down direction will be referred to as the third direction Z.

[0034] An elastic stop 30 is provided between the first mounting member 11 and the second mounting member 12. The elastic stop 30 includes a first stop portion 31 and a second stop portion 32.

[0035] The first stop portion 31 has a pair of stop walls 31a respectively disposed between a pair of first wall portions 26 and the first mounting member 11. The outer and back surfaces of the stop walls 31a face the first direction X. The first stop portion 31 has a post portion 31b protruding upward from the stop walls 31a. The pair of stop walls 31a are connected in the first direction X by a second stop portion 32 and a connecting portion 33 extending in the first direction X.

[0036] The second stop portion 32 is disposed between the second wall portion 27 and the first mounting member 11. The second stop portion 32 is formed in the shape of a plate, and the front and back surfaces of the second stop portion 32 face the second direction Y.

[0037] The connecting portion 33 is provided such that it separates from the second stop portion 32 in a third direction Z, which intersects the first direction X and the second direction Y. The connecting portion 33 connects the upper ends of the post portion 31b of the first stop portion 31 to each other in the first direction X. The post portion 31b becomes the connecting portion of the first stop portion 31 connected to the connecting portion 33.

[0038] Here, as Figure 3As shown, the first stop portion 31 includes a bridging wall 34 that connects a pair of stop walls 31a in the first direction X. The bridging wall 34 connects the lower ends of the pair of stop walls 31a to each other in the first direction X. The bridging wall 34 is also connected to the lower end of the second stop portion 32. The bridging wall 34 abuts against or is close to the support plate portion 24 of the first mounting member 11 in the second direction Y. The bridging wall 34 is formed as a plate with its front and back surfaces facing the third direction Z.

[0039] The first stop portion 31, the second stop portion 32, and the connecting portion 33 are integrally formed using, for example, a rubber material.

[0040] Furthermore, in this embodiment, a pair of limiting parts are provided on the first mounting member 11, which lock at least one of the first stop part 31 and the second stop part 32 to the connecting part 33, preventing the first stop part 31 and the connecting part 33 from approaching each other in the third direction Z. The column portion 31b of the first stop part 31 is pulled by the pair of limiting parts in the third direction Z.

[0041] The first limiting part 35 of the pair of limiting parts locks at least one of the first stop part 31 and the second stop part 32. The first limiting part 35 connects the two support plate parts 24 in the first direction X.

[0042] The first limiting part 35 is located below the common axis O. The first limiting part 35 includes: a pair of third wall parts 36 that protrude from the two support plate parts 24 toward opposite sides of the mounting hole 24a along the second direction Y; and a fourth wall part 37 that connects the pair of third wall parts 36 to each other in the first direction X.

[0043] Hereinafter, the side that is away from the common axis O along the second direction Y when viewed from the first direction X is called the outer side of the second direction Y, and the side that is close to the common axis O when viewed from the first direction X along the second direction Y is called the inner side of the second direction Y.

[0044] The back face of the third wall portion 36 faces the first direction X. The opposite side of the back face of each pair of third wall portions 36, which is opposite to the side containing the opposing face, is covered by the stop wall 31a in the first direction X over the entire area. The opposite side of the third wall portion 36 abuts against or is close to the stop wall 31a. A post portion 31b is provided at the end of the stop wall 31a on the inner side in the second direction Y.

[0045] The back surface of the fourth wall portion 37 faces the second direction Y. The fourth wall portion 37 connects the outer ends of the third wall portion 36 in the second direction Y to each other. The fourth wall portion 37 separates from the support plate portion 24 in the second direction Y. The outer surface of the back surface of the fourth wall portion 37 facing the second direction Y is covered by the second stop portion 32 in the second direction Y over the entire area. The outer surface of the back surface of the fourth wall portion 37 facing the second direction Y abuts against or is close to the second stop portion 32. The second stop portion 32 connects the outer ends of the pair of stop walls 31a in the second direction Y to each other.

[0046] The lower edges of the third wall portion 36 and the fourth wall portion 37 abut against or approach the upper surface of the bridge connecting wall 34. As a result, the first limiting portion 35 locks the first stop portion 31 and the second stop portion 32, restricting their upward movement.

[0047] The second limiting part 39 of the pair of limiting parts locks the connecting part 33. The second limiting part 39 is part of the upper edge of the support plate part 24. The second limiting part 39 is located above the common axis O. The lower surface of the connecting part 33 hooks onto the upper edge of the support plate part 24. Thus, the second limiting part 39 locks the connecting part 33, restricting the downward movement of the connecting part 33.

[0048] The second limiting part 39 has a locking protrusion 39a protruding upward from the upper edge of the support plate part 24. Alternatively, the second limiting part 39 may not have a locking protrusion 39a. The locking protrusion 39a separates from the mounting hole 24a formed in the support plate part 24 in the second direction Y. A gap in the second direction Y is provided between the locking protrusion 39a and the outer peripheral surface of the mounting cylinder 21. The connecting part 33 is inserted into this gap, and the connecting part 33 abuts against or approaches the outer peripheral surface of the mounting cylinder 21 and the locking protrusion 39a. Thus, the second limiting part 39 restricts the movement of the connecting part 33 in the second direction Y away from the first mounting member 11 (outer side of the second direction Y).

[0049] Here, the first limiting part 35 has a latching protrusion 38 that protrudes in the third direction Z and penetrates at least one of the first stop part 31 and the second stop part 32 in the third direction Z. The top portion of the latching protrusion 38 that protrudes in the third direction Z relative to at least one of the first stop part 31 and the second stop part 32 is locked in the third direction Z relative to at least one of the first stop part 31 and the second stop part 32.

[0050] In the illustrated example, the latching protrusion 38 protrudes downward from the lower edge of the fourth wall portion 37 and penetrates the bridging wall 34 of the first stop portion 31 in the third direction Z. Alternatively, the latching protrusion 38 may also penetrate the second stop portion 32 in the third direction Z.

[0051] A protruding protrusion 38a extending in the first direction X is formed at the top end of the snap-fit ​​protrusion 38 that protrudes downward from the bridge connecting wall 34. The protruding protrusion 38a abuts against or is close to the lower surface of the bridge connecting wall 34. Alternatively, the protruding protrusion 38a may also be formed at the top end of the snap-fit ​​protrusion 38 in a direction such as the second direction Y.

[0052] In summary, the latching protrusion 38 penetrates the bridge connecting wall 34 in the third direction Z. Therefore, the latching protrusion 38 abuts against or approaches the inner surface of the through hole formed in the bridge connecting wall 34 in the second direction Y.

[0053] Therefore, the first limiting part 35 abuts against or approaches at least one of the first stop part 31 and the second stop part 32 in the second direction Y, thereby limiting the movement of at least one of the first stop part 31 and the second stop part 32 in the direction away from the first mounting member 11 (outer side of the second direction Y).

[0054] As explained above, in the vibration isolation device 1 according to this embodiment, the elastic stop member 30 includes a first stop portion 31 and a second stop portion 32. Therefore, when vibrations in the first direction X and the second direction Y are respectively input to the vibration isolation device 1, the elastic stop member 30 can collide with the second mounting member 12, and one elastic stop member 30 can be used to deal with multiple input directions of vibration.

[0055] The first mounting member 11 is provided with a first limiting part 35 and a second limiting part 39, which lock at least one of the first stop part 31 and the second stop part 32 and the connecting part 33, restricting the first stop part 31 and the connecting part 33 from getting close to each other in the third direction Z, and pulling the column part 31b of the first stop part 31 in the third direction Z.

[0056] Therefore, the elastic stop 30 can be fastened to the first mounting member 11 in the third direction Z, and even if the elastic stop 30 is not bonded to the first mounting member 11, misalignment of the elastic stop 30 relative to the first mounting member 11 can be suppressed when, for example, it is assembled into a vehicle.

[0057] The first stop portion 31, the second stop portion 32, and the connecting portion 33 are integrally formed, thus preventing an increase in the number of parts.

[0058] The first limiting part 35 abuts against or approaches at least one of the first stop part 31 and the second stop part 32 in the second direction Y, and the second limiting part 39 abuts against or approaches the connecting part 33 in the second direction Y. The first limiting part 35 and the second limiting part 39 limit the movement of at least one of the first stop part 31 and the second stop part 32 and the connecting part 33 in the direction away from the first mounting member 11 in the second direction Y. Therefore, it is possible to prevent the elastic stop member 30 from detaching from the first mounting member 11 in the second direction Y.

[0059] The second stop portion 32 connects the ends of a pair of stop walls 31a in the second direction Y to each other, thereby enabling miniaturization of the elastic stop member 30.

[0060] The first limiting part 35 has a latching protrusion 38 that penetrates at least one of the first stop part 31 and the second stop part 32 in the third direction Z and is locked relative to at least one of the first stop part 31 and the second stop part 32 in the third direction Z.

[0061] Therefore, at least one of the first stop portion 31 and the second stop portion 32 can be reliably prevented from misaligning relative to the first mounting member 11 in the second direction Y. Furthermore, even if the post portion 31b of the first stop portion 31 is forcefully pulled in the third direction Z using the first limiting portion 35 and the second limiting portion 39, the snap-fit ​​protrusion 38 can be prevented from disengaging from at least one of the first stop portion 31 and the second stop portion 32 in the third direction Z.

[0062] Next, refer to Figures 4-6 The vibration isolation device 2 of the second embodiment of the present invention will be described.

[0063] Furthermore, in this second embodiment, the same reference numerals are used for the parts that are the same as those in the first embodiment, and their descriptions are omitted; only the differences are described.

[0064] In this embodiment, the first limiting part 35 does not have a snap-fit ​​protrusion 38, and the bridge connecting wall 34 is separated from the second stop part 32 on the inner side in the second direction Y. The lower ends of the third wall part 36 and the fourth wall part 37 in the first limiting part 35 protrude downward from the stop wall 31a and the second stop part 32.

[0065] A locking recess 39b is formed in the third wall portion 36 of the first limiting portion 35, opening inward and downward in the second direction Y. The locking recess 39b penetrates the third wall portion 36 in the first direction X. The locking recess 39b is formed at the lower end of the third wall portion 36. A bridging wall 34 is inserted into the locking recess 39b.

[0066] The bridge connecting wall 34 is sandwiched between the inner surface of the locking recess 39b and the support plate portion 24 in the second direction Y, and abuts against or approaches the inner surface of the locking recess 39b and the support plate portion 24. Thus, the first limiting portion 35 restricts the movement of the first stop portion 31 in the second direction Y away from the first mounting member 11.

[0067] The upper surface of the bridge connecting wall 34 abuts against or is close to the upper end face of the inner surface of the locking recess 39b that is located at the upper end and facing downward. As a result, the first limiting part 35 locks the first stop part 31, restricting the upward movement of the first stop part 31.

[0068] As explained above, the vibration isolation device 2 according to this embodiment can suppress the increase in the number of parts in the same way as the previous embodiment, and can cope with multiple input directions of vibration. Furthermore, it can suppress the misalignment of the elastic stop 30 relative to the first mounting member 11 even without bonding.

[0069] Furthermore, a locking recess 39b is formed in the third wall portion 36 of the first limiting portion 35, and a bridging wall 34 is inserted into the locking recess 39b, with the upper surface of the bridging wall 34 abutting against or near the upper end surface of the locking recess 39b. Therefore, it is possible to reliably maintain the state in which the column portion 31b of the first stop portion 31 is forcefully pulled in the third direction Z by the first limiting portion 35 and the second limiting portion 39.

[0070] Furthermore, the scope of protection of the present invention is not limited to the aforementioned embodiments, and various modifications can be made without departing from the spirit of the present invention.

[0071] For example, the first stop portion 31 may not have a bridge connecting wall 34.

[0072] Alternatively, the following structure can be adopted: by providing interlocking protrusions and recesses in at least one of the first stop portion 31 and the second stop portion 32 and the first limiting portion 35, the first limiting portion 35 can lock at least one of the first stop portion 31 and the second stop portion 32.

[0073] Furthermore, without departing from the spirit of the present invention, the constituent elements in the above embodiments may be appropriately replaced with well-known constituent elements. In addition, the above embodiments and variations may be appropriately combined.

[0074] According to the vibration isolation device of the first embodiment of the present invention, the elastic stop member includes a first stop portion and a second stop portion. Therefore, when vibrations in the first direction and the second direction are respectively input to the vibration isolation device, the elastic stop member can collide with the second mounting member, and a single elastic stop member can be used to respond to multiple input directions of vibrations.

[0075] A pair of limiting portions are provided on the first mounting member, which lock at least one of the first stop portion and the second stop portion to the connecting portion, preventing the first stop portion and the connecting portion from approaching each other in the third direction and pulling the connecting portion of the first stop portion to the connecting portion in the third direction. Therefore, the elastic stop member can be fastened to the first mounting member in the third direction, and even if the elastic stop member is not glued to the first mounting member, misalignment of the elastic stop member relative to the first mounting member can be suppressed when, for example, it is assembled into a vehicle.

[0076] The first stop, the second stop, and the connecting part are integrally formed, thus preventing an increase in the number of parts.

[0077] According to the first embodiment of the vibration isolation device of the second aspect of the present invention, a first limiting part of the pair of limiting parts abuts against or approaches at least one of the first stop and the second stop in the second direction, a second limiting part of the pair of limiting parts abuts against or approaches the connecting part in the second direction, and the pair of limiting parts restricts the movement of at least one of the first stop and the second stop and the connecting part in the direction away from the first mounting member in the second direction.

[0078] According to this structure, the first limiting part abuts against or approaches at least one of the first stop and the second stop in the second direction, and the second limiting part abuts against or approaches the connecting part in the second direction. The first and second limiting parts restrict the movement of at least one of the first stop and the second stop, as well as the connecting part, in the direction away from the first mounting member in the second direction. Therefore, it is possible to prevent the elastic stop from detaching from the first mounting member in the second direction.

[0079] According to the first or second embodiment of the vibration isolation device of the present invention, the second stop portion connects the ends of the pair of stop walls in the second direction to each other.

[0080] According to this structure, the second stop connects the ends of a pair of stop walls in the second direction to each other, thus enabling the miniaturization of the elastic stop.

[0081] According to any one of the first to third embodiments of the vibration isolation device of the present invention, each of the pair of limiting portions has a snap-fit ​​protrusion that protrudes in the third direction and penetrates at least one of the first stop portion and the second stop portion in the third direction. In the snap-fit ​​protrusion, the top end portion protruding in the third direction relative to at least one of the first stop portion and the second stop portion is locked relative to at least one of the first stop portion and the second stop portion in the third direction.

[0082] According to this structure, each of the pair of limiting portions has a snap-fit ​​protrusion that penetrates at least one of the first stop portion and the second stop portion in a third direction, and is locked relative to at least one of the first stop portion and the second stop portion in the third direction. Therefore, misalignment of at least one of the first stop portion and the second stop portion relative to the first mounting member in the second direction can be reliably suppressed. Furthermore, even if the connecting portion of the first stop portion is forcefully pulled in the third direction using the pair of limiting portions, disengagement of the snap-fit ​​protrusion from at least one of the first stop portion and the second stop portion in the third direction can be suppressed.

[0083] Industrial availability

[0084] The vibration isolation device according to the present invention can suppress the increase in the number of components, and can respond to multiple input directions of vibration, and can suppress the misalignment of the elastic stop relative to the first mounting member even without bonding.

[0085] Explanation of reference numerals in the attached figures

[0086] 1, 2, Vibration isolation device; 11, First mounting member; 12, Second mounting member; 13, Outer cylinder; 14, Inner cylinder; 15, Elastic body; 26, First wall portion; 27, Second wall portion; 30, Elastic stop member; 31, First stop portion; 31a, Stop wall; 32, Second stop portion; 33, Connecting portion; 35, First limiting portion (limiting portion); 38, Snap-on protrusion; 39, Second limiting portion (limiting portion); X, First direction; Y, Second direction; Z, Third direction.

Claims

1. A vibration isolation device, wherein, This vibration isolation device has the following features: A first mounting member installed in either the vibration generating part or the vibration receiving part, and a second mounting member installed in either the vibration generating part or the vibration receiving part; The outer cylinder is mounted on the first mounting component; The inner cylinder is mounted on the second mounting member and inserted into the inside of the outer cylinder; An elastomer that connects the inner circumferential surface of the outer cylinder to the outer circumferential surface of the inner cylinder; and An elastic stop is disposed between the first mounting member and the second mounting member. The second mounting member includes: a pair of first wall portions that cover the first mounting member from both sides in a first direction; and a second wall portion that connects the pair of first wall portions to each other and covers the first mounting member in a second direction intersecting the first direction. The elastic stop member includes: The first stop portion has a pair of stop walls respectively disposed between the pair of said first wall portions and the first mounting member; and The second stop is disposed between the second wall portion and the first mounting member. The pair of stop walls are connected in the first direction by the second stop portion and the connecting portion extending in the first direction. The connecting portion is arranged such that it separates from the second stop portion in a third direction that intersects the first direction and the second direction. The first stop portion, the second stop portion, and the connecting portion are integrally formed. The first mounting member is provided with a pair of limiting parts, which lock at least one of the first stop and the second stop, as well as the connecting part, thereby preventing the first stop and the connecting part from moving closer to each other in the third direction. Pull the connecting portion of the first stop that is connected to the connecting portion in the third direction.

2. The vibration isolation device according to claim 1, wherein, The first limiting part of the pair of limiting parts abuts against or approaches at least one of the first stop and the second stop in the second direction, and the second limiting part of the pair of limiting parts abuts against or approaches the connecting part in the second direction. The pair of limiting parts restricts the movement of at least one of the first stop and the second stop and the connecting part in the direction away from the first mounting member in the second direction.

3. The vibration isolation device according to claim 1 or 2, wherein, The second stop connects the ends of the pair of stop walls in the second direction to each other.

4. The vibration isolation device according to claim 1 or 2, wherein, Each of the pair of limiting portions has a latching protrusion that protrudes in the third direction and penetrates at least one of the first stop portion and the second stop portion in the third direction. In the latching protrusion, the top portion protruding in the third direction relative to at least one of the first stop and the second stop is locked relative to at least one of the first stop and the second stop in the third direction.

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