JP6824722B2 - Anti-vibration unit - Google Patents

Description

The present invention relates to a vibration isolation unit in which an vibration isolation device is attached to a bracket.

Conventionally, a vibration isolation unit for reducing vibration transmitted from a vibration source side of an engine or the like to a vibration receiving side of a vehicle body or the like has been known. As the vibration isolator unit, for example, a vibration isolator is formed by connecting the first member and the second member with a vibration isolator substrate made of a rubber-like elastic body, and the first member and the second member are respectively connected. Those attached to the vibration source side or the vibration receiving side via a bracket are disclosed (Patent Document 1). In Patent Document 1, after the caulking piece protruding from the first member is inserted into the insertion hole of the bracket, the first member is fixed to the bracket by bending the tip portion of the caulking piece.

JP 2015-78729

However, in the above-mentioned conventional technique, in order to suppress the wobbling of the first member with respect to the bracket, it is necessary to increase the width of the caulking piece in contact with the bracket. However, since the crimped piece is inserted into the insertion hole, there is a problem that the degree of freedom in the width and shape of the crimped piece is low and wobbling cannot be sufficiently suppressed.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a vibration isolation unit capable of suppressing wobbling of the vibration isolation device with respect to a bracket.

In order to achieve this object, in the vibration isolation unit of the present invention, the vibration isolation device in which the first member and the second member are connected by a vibration isolation base composed of a rubber-like elastic body, and the first member are fixed. A second bracket having a first bracket, a mounting portion attached to the vibration source side or the vibration receiving side, and an insertion portion connected to the mounting portion, and the insertion portion is provided by the first bracket. is sandwiched and a second direction perpendicular to the first direction as the first direction, wherein the recess is dented outer surface of the insertion portion is formed in a first direction, the first bracket, that put around the recess a first face in contact with the front Kigaimen, coupled to said first surface portion, and a bent portion that is bent into the recess relative to the first surface, said second bracket, the first direction and The bent portion is the inner surface of the concave portion facing the other side of the third direction and the first contact surface with which the first bracket contacts toward one side of the third direction orthogonal to the second direction. The insertion portion is formed in the first bracket having a second contact surface that comes into contact with the first surface portion and in a state where the bending portion is not bent with respect to the first surface portion so that the insertion portion can be inserted into one side in the third direction. There is.

According to the anti-vibration unit according to claim 1, since the insertion portion of the second bracket is sandwiched from the first direction and the second direction by the first bracket, the first direction and the second direction of the first bracket with respect to the second bracket. You can regulate the movement to. Further, when the insertion portion of the second bracket is inserted into one side of the third direction into the first bracket in which the bent portion is not bent with respect to the first surface portion, the second bracket facing one side in the third direction is inserted. first bracket to the first contact surface is in contact of the bent portion which is bent with respect to the first surface portion, because the come in contact with the second contact surface is the inner surface of the recess facing to the other side in the third direction, The movement of the first bracket in the third direction with respect to the second bracket can be restricted. As a result, the first bracket can be fixed to the second bracket.

Since the first surface portion comes into contact with the outer surface of the insertion portion , the degree of freedom in the shape and dimensions of the first surface portion can be ensured. Therefore, by appropriately setting the shape and dimensions of the first surface portion, it is possible to suppress the wobbling of the first bracket with respect to the second bracket, and it is possible to suppress the wobbling of the vibration isolator fixed to the first bracket.

According to the anti-vibration unit according to claim 2, the bent portion is bent in a direction orthogonal to the third direction with respect to the first surface portion, and is connected to the edge of the first surface portion in the first direction or the second direction. The side edge in the third direction comes into contact with the second contact surface. As a result, the accuracy of the bending angle of the bent portion with respect to the first surface portion can be ignored with respect to the contact between the bent portion and the second contact surface, and even if the bending angle of the bent portion changes due to the load received from the second bracket, the bent portion And the contact with the second contact surface can be maintained, and the wobbling of the first bracket with respect to the second bracket in the third direction can be suppressed. As a result, in addition to the effect of claim 1, the configuration for preventing the second bracket from coming off in the third direction with respect to the first bracket can be simplified, and the wobbling of the vibration isolator with respect to the second bracket can be further suppressed. ..

According to the vibration isolation unit according to claim 3, the insertion portion is sandwiched between the second surface portion and the first surface portion of the first bracket in the first direction, and a pair of the first surface portion and the second surface portion are connected to each other. The insertion portion is sandwiched between the third surface portions in the second direction. Thereby, the movement of the second bracket with respect to the first bracket in the first direction and the second direction can be restricted by the first surface portion, the second surface portion, and the third surface portion regardless of the bent portion. Therefore, even if a load is input from the second bracket to the bent portion and the bending angle of the bent portion with respect to the first surface portion changes, the first bracket wobbles in the first direction and the second direction with respect to the second bracket. Can be suppressed. As a result, in addition to the effect of claim 1 or 2, there is an effect that the wobbling of the vibration isolator with respect to the second bracket can be further suppressed.

According to the anti-vibration unit according to claim 4, since the first surface portions are provided apart from each other in the second direction and are connected to each other via the second surface portion and the third surface portion, the first bracket is moved in the second direction. It can be easily deformed. Therefore, when the second bracket is inserted between the first surface portion and the second surface portion of the first bracket and between the pair of third surface portions, the first bracket is deformed in the second direction and the second bracket is inserted into the first bracket. Since the bracket can be easily inserted, the anti-vibration unit can be easily assembled.

Further, after inserting the second bracket into the first bracket, the bent portions provided on the first surface portions separated in the second direction are bent into the recesses, so that the outer surface of the bent portion in the second direction becomes the second. 2 Contact the contact part of the bracket. As a result, the movement of the bent portion to the outside in the second direction is hindered by the contact portion, so that the first bracket can be hardly deformed to the outside in the second direction, and the first bracket is in the second direction with respect to the second bracket. It can suppress wobbling. Therefore, in addition to the effect of claim 3, there is an effect that the wobbling of the vibration isolator with respect to the second bracket can be further suppressed while facilitating the assembly of the vibration isolation unit.

It is a perspective view of the anti-vibration unit in the 1st Embodiment of this invention. It is sectional drawing of the vibration isolation unit. It is a perspective view of the anti-vibration unit before inserting the 2nd bracket into the 1st bracket. It is a perspective view of the anti-vibration unit which inserted the 2nd bracket into the 1st bracket. It is a perspective view of the anti-vibration unit before inserting the 2nd bracket into the 1st bracket in 2nd Embodiment. (A) is a cross-sectional view of the anti-vibration unit, and (b) is a cross-sectional view of the anti-vibration unit along the VIb-VIb line in FIG. 6 (a). (A) is a perspective view of the anti-vibration unit before inserting the second bracket into the first bracket in the third embodiment, and (b) is a perspective view of the anti-vibration unit in which the second bracket is fixed to the first bracket. It is a figure. (A) is a perspective view of the anti-vibration unit before inserting the second bracket into the first bracket in the fourth embodiment, and (b) is a perspective view of the anti-vibration unit in which the second bracket is fixed to the first bracket. It is a figure.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. First, the vibration isolation unit 1 according to the first embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG. 1 is a perspective view of the vibration isolation unit 1, and FIG. 2 is a cross-sectional view of the vibration isolation unit 1. In FIGS. 1 and 2, the arrow Z indicates the first direction Z, the arrow X indicates the second direction X, and the arrows Y1-Y2 indicate the third direction Y1-Y2. The first direction Z, the second direction X, and the third direction Y1-Y2 are orthogonal to each other (the same applies to FIGS. 3 to 8). When the third direction Y1 and the third direction Y2 are not distinguished, it is described as the third direction Y. Further, in the first embodiment, the first direction Z is described as the vertical direction of the vibration isolation unit 1, but this vertical direction does not necessarily coincide with the vertical direction when the vibration isolation unit 1 is used.

As shown in FIG. 1, the vibration isolator unit 1 is a device that reduces vibration transmitted from a vibration source side (not shown) of an engine or the like to a vibration receiving side (not shown) of a vehicle body or the like by a vibration isolator 10. Is. The vibration isolator unit 1 includes a vibration isolator 10, a fixing member 2 for attaching the vibration isolator 10 to a vibration receiving side of a vehicle body or the like, a first bracket 20 to which the vibration isolator 10 is fixed, and a vibration source side of an engine or the like. A second bracket 30 that is attached to and holds the first bracket 20 is provided. It is possible to attach the fixing member 2 to the vibration source side and the second bracket 30 to the vibration receiving side.

As shown in FIG. 2, the vibration isolator 10 is composed of a first member 11, a cylindrical second member 12, and a rubber-like elastic body that connects the first member 11 and the second member 12. It includes a base 13. The first member 11 is a metal member coaxial with the second member 12 and arranged above the second member 12, and the outer diameter is reduced toward the second member 12.

The second member 12 is a metal member. The vibration isolator 10 according to the first embodiment is a liquid-filled vibration isolator in which an antifreeze liquid such as ethylene glycol is sealed in a liquid chamber 14 formed on the inner peripheral side of the second member 12. The vibration isolator 10 is not limited to the liquid-filled vibration isolator, and can be a vibration isolator that does not have a liquid chamber 14.

As shown in FIGS. 1 and 2, the fixing member 2 is a cylindrical metal member in which the second member 12 is press-fitted in the axial direction (first direction Z). The flange portion 2a of the fixing member 2 projects axially symmetrically from the lower end side in the axial direction (second direction X). A bolt hole 2b is formed through the flange portion 2a in the first direction Z, and a bolt (not shown) inserted into the bolt hole 2b is fastened to the vibration receiving side, so that the fixing member 2 is attached to the vibration receiving side. Attached to.

The first bracket 20 is a metal member for fixing the vibration isolator 10 to the second bracket 30. The first bracket 20 is an integrally molded product with the first member 11, and the first member 11 is fixed to the first bracket 20. It is possible to form the first member 11 and the first bracket 20, respectively, and fix the first bracket 20 to the first member 11 by using bolts or the like.

The first bracket 20 includes a plate-shaped bottom surface portion 21 to which the first member 11 is fixed, and a pair of plate-shaped side surface portions 22 erected on both side edges of the bottom surface portion 21 on the second direction X side. A pair of plate-shaped facing surface portions 23 projecting from the upper end edge of the side surface portion 22 toward each other, and a plate-shaped bending portion 24 that bends from the facing surface portion 23 toward the bottom surface portion 21 are provided.

The first bracket 20 is an integrally molded product in which the bottom surface portion 21, the side surface portion 22, the facing surface portion 23, and the bent portion 24 are connected to each other, and the plate material is formed along the outer surfaces 33, 34, 35 of the second bracket 30. It is formed by bending. The bottom surface portion 21 and the facing surface portion 23 face each other in the first direction Z, and the bottom surface portion 21 and the facing surface portion 23 sandwich the second bracket 30 in the first direction Z. The pair of side surface portions 22 face each other in the second direction X, and the second bracket 30 is sandwiched between the pair of side surface portions 22 in the second direction X. Thereby, the movement of the first bracket 20 in the first direction Z and the second direction X with respect to the second bracket 30 can be restricted.

The bent portion 24 is a portion that bends into the recess 36 of the second bracket 30, which will be described later, with the second bracket 30 sandwiched between the bottom surface portion 21 and the facing surface portion 23 and between the pair of side surface portions 22. Is. The bent portion 24 bends in a direction orthogonal to the third direction Y with respect to the facing surface portion 23. The width of the bent portion 24 (dimension in the third direction Y) is set smaller than the width of the facing surface portion 23 (dimension in the third direction Y). By setting the width of the bent portion 24 to be small, the bent portion 24 can be easily bent with respect to the facing surface portion 23.

The second bracket 30 is a metal member and includes a mounting portion 31 attached to the vibration source side and an inserting portion 32 connected to the mounting portion 31 and inserted into the first bracket 20. A bolt hole 31a is formed in the mounting portion 31 through the mounting portion 31 in the first direction Z, and a bolt (not shown) inserted into the bolt hole 31a is fastened to the vibration source side to form a second bolt hole 31a. The bracket 30 is attached to the vibration source side.

The insertion portion 32 is a thick plate-shaped member provided extending from the mounting portion 31 in the third direction Y1, and the XZ cross section is formed in a rectangular shape. The insertion portion 32 includes outer surfaces 33 and 34 that intersect the first direction Z and outer surfaces 35 that intersect the second direction X. The vibration isolator 10 side is the outer surface 33. In the insertion portion 32 inserted into the first bracket 20, the outer surface 33 contacts the bottom surface portion 21, the outer surface 34 contacts the facing surface portion 23, and the outer surface 35 contacts the pair of side surface portions 22 respectively.

The insertion portion 32 is recessed from the outer surface 34 in the first direction Z (outer surface 33 side) to form a recess 36. The recess 36 is a portion where the bent portion 24 is fitted, and is formed over the entire length of the insertion portion 32 in the second direction X. The inner surface of the recess 36 is composed of a plane facing the third direction Y and perpendicular to the third direction Y, the mounting portion 31 side of the plane is the first contact surface 37, and the side away from the mounting portion 31 is the first. 2 contact surface 38. The bottom of the recess 36 is the bottom surface 39.

The dimension of the recess 36 in the third direction Y, that is, the dimension between the first contact surface 37 and the second contact surface 38 is set to be the same as the width of the bent portion 24 (the dimension in the third direction Y). As a result, the side edges 24a and 24b of the bent portion 24 bent into the recess 36 come into contact with the first contact surface 37 and the second contact surface 38, respectively, so that the third direction Y of the first bracket 20 with respect to the second bracket 30 You can regulate the movement to.

Next, a method of fixing the first bracket 20 and the second bracket 30 will be described with reference to FIGS. 3 and 4 in addition to FIG. FIG. 3 is a perspective view of the anti-vibration unit 1 before the second bracket 30 is inserted into the first bracket 20, and FIG. 4 is a perspective view of the anti-vibration unit 1 in which the second bracket 30 is inserted into the first bracket 20. is there.

In the first bracket 20, as shown in FIG. 3, the bottom surface portion 21 and the facing surface portion 23 of the first bracket 20 face each other in the first direction Z along the shapes of the outer surfaces 33, 34, 35 of the second bracket 30. Then, the pair of side surface portions 22 face each other in the second direction X. Further, the bent portion 24 is not bent with respect to the facing surface portion 23 so that the facing surface portion 23 and the bent portion 24 are on the same plane.

First, the insertion portion 32 of the second bracket 30 is inserted between the bottom surface portion 21 of the first bracket 20 and the facing surface portion 23, and between the pair of side surface portions 22. The insertion direction of the insertion portion 32 is the third direction Y1. The dimension of the first direction Z of the insertion portion 32 is slightly larger than the distance between the bottom surface portion 21 and the facing surface portion 23, and the dimension of the second direction X of the insertion portion 32 is smaller than the distance of the pair of side surface portions 22. Since the setting is large, the insertion portion 32 is press-fitted into the first bracket 20. As a result, the wobbling of the first bracket 20 with respect to the second bracket 30 can be suppressed, and the wobbling of the vibration isolator 10 with respect to the second bracket 30 can be suppressed.

Next, as shown in FIG. 4, the bent portion 24 of the first bracket 20 and the recess 36 of the second bracket 30 are aligned with each other. More specifically, the side edge 24a of the bent portion 24 and the first contact surface 37 of the recess 36 are aligned in the third direction Y, and the side edge 24b of the bent portion 24 and the second contact surface 38 of the recess 36 are aligned. Align the position of the third direction Y.

Finally, as shown in FIG. 1, the bent portion 24 is bent into the recess 36 with respect to the facing surface portion 23. As a result, the movement of the first bracket 20 with respect to the second bracket 30 is restricted in the first direction Z by the contact between the bottom surface portion 21 and the facing surface portion 23 and the outer surfaces 33 and 34, and the pair of side surface portions 22 and the outer surface 35. The movement of the second direction X is restricted by the contact with the bending portion 24, and the movement of the third direction Y is restricted by the contact between the bent portion 24 and the first contact surface 37 and the second contact surface 38. As a result, the first bracket 20 can be fixed to the second bracket 30.

The movement of the first bracket 20 in the first direction Z and the second direction X with respect to the second bracket 30 is regulated by the bottom surface portion 21, the side surface portion 22, and the facing surface portion 23 regardless of the bending portion 24. Therefore, even if a load is input from the second bracket 30 to the bent portion 24 and the bending angle of the bent portion 24 with respect to the facing surface portion 23 changes, the first bracket 20 (vibration isolator 10) with respect to the second bracket 30. Can be suppressed from wobbling in the first direction Z and the second direction X.

Since the bent portion 24 comes into contact with the bottom surface 39 of the recess 36, the bent portion 24 receives a load in the first direction Z from the bottom surface 39, and the facing surface portion 23 is pushed through the bent portion 24 by the load to the bottom surface portion 21. The distance from the facing surface portion 23 changes, and the first bracket 20 may wobble in the first direction Z with respect to the second bracket 30. In particular, the closer the bending angle of the bending portion 24 with respect to the facing surface portion 23 is to 90 degrees, the more likely the first bracket 20 is to wobble in the first direction Z.

On the other hand, in the first embodiment, since the bending angle of the bending portion 24 with respect to the facing surface portion 23 is small, even if the bending portion 24 receives a load in the first direction Z from the bottom surface 39, the bending angle of the bending portion 24 can be changed. It can be changed to absorb the load in the first direction Z from the bottom surface 39. Therefore, even if the bent portion 24 receives a load in the first direction Z from the bottom surface 39, it is possible to prevent the first bracket 20 from wobbling in the first direction Z with respect to the second bracket 30.

Since the two facing surface portions 23 are provided apart from each other in the second direction X and are connected to each other via the bottom surface portion 21 and the side surface portion 22, the first bracket 20 can be easily deformed in the second direction X. Therefore, since the second bracket 30 can be inserted into the first bracket 20 while deforming the first bracket 20 in the second direction X, the second bracket 30 can be easily inserted and the anti-vibration unit 1 can be easily assembled.

Not limited to the case where the second bracket 30 is inserted into the first bracket 20, the bottom surface portion 21 is seconded from the state where the bottom surface portion 21, the side surface portion 22, and the facing surface portion 23 of the first bracket 20 are in the same plane. It is possible to press the bracket 30 against the outer surface 33, bend the side surface portion 22 with respect to the bottom surface portion 21, and bend the facing surface portion 23 with respect to the side surface portion 22. In this case, since the first bracket 20 is bent while pressing the first bracket 20 against the second bracket 30, the first bracket 20 and the second bracket 30 are formed by the springback after the bending of the first bracket 20. Gap is relatively easy to occur between.

On the other hand, in the first embodiment, the second bracket 30 is inserted (press-fitted) into the first bracket 20 formed in advance along the outer surfaces 33, 34, 35 of the second bracket 30, so that the first bracket 20 is used. It is possible to prevent a gap from being formed between the second bracket 30 and the second bracket 30. As a result, the wobbling of the first bracket 20 (vibration isolator 10) with respect to the second bracket 30 can be suppressed.

According to the vibration isolation unit 1 described above, the bent portion 24 is bent into the recess 36 in order to regulate the movement of the first bracket 20 with respect to the second bracket 30 in the third direction Y, so that the shape of the bent portion 24 is formed. And dimensions are limited according to the shape and dimensions of the recess 36. On the other hand, in order to restrict the movement of the first bracket 20 in the first direction Z and the second direction X with respect to the second bracket 30, the bottom surface portion 21, the side surface portion 22 and the outer surface portions 33, 34, 35 of the second bracket 30 are restricted. Since the facing surface portions 23 are brought into contact with each other, the degree of freedom in the shape and dimensions of the bottom surface portion 21, the side surface portion 22, and the facing surface portion 23 can be ensured. The shape and dimensions of the bent portion 24, such as setting the width of the bottom surface portion 21, the side surface portion 22, and the facing surface portion 23 (dimension in the third direction Y) to be larger than the width of the bent portion 24 (dimension in the third direction Y). When properly set, the wobbling of the first bracket 20 with respect to the second bracket 30 can be suppressed.

Since the bent portion 24 bends in a direction orthogonal to the third direction Y with respect to the facing surface portion 23, if the bent portion 24 is located in the recess 36, the bent portion 24 is bent regardless of the bending angle of the bent portion 24 with respect to the facing surface portion 23. The bent portion 24 comes into contact with the first contact surface 37 and the second contact surface 38. Therefore, since the accuracy of the bending angle of the bending portion 24 can be ignored, it is possible to easily configure the second bracket 30 inserted in the first bracket 20 to prevent it from coming off in the third direction Y2.

Further, since the bent portion 24 is bent in a direction orthogonal to the third direction Y with respect to the facing surface portion 23, the bent portion 24 is bent even if the bent portion 24 receives a load in the third direction Y from the second bracket 30. It is possible to prevent the angle from changing. As a result, it is possible to prevent the second bracket 30 inserted into the first bracket 20 from coming off in the third direction Y2 due to a change in the bending angle of the bent portion 24.

Further, since the bent portion 24 bends in the direction orthogonal to the third direction Y with respect to the facing surface portion 23, the bent portion 24 receives a load or the like in the first direction Z from the second bracket 30 and the bending angle of the bent portion 24. Is changed, the contact between the bent portion 24 and the first contact surface 37 and the second contact surface 38 can be maintained. As a result, it is possible to suppress the wobbling of the first bracket 20 with respect to the second bracket 30 in the third direction Y.

Next, the vibration isolation unit 50 according to the second embodiment will be described with reference to FIGS. 5, 6 (a) and 6 (b). In the first embodiment, the case where the recess 36 is formed over the entire length of the insertion portion 32 in the second direction X has been described. On the other hand, in the second embodiment, the case where the recess 58 is provided in a part of the second direction X of the insertion portion 57 will be described. The same parts as those in the first embodiment are designated by the same reference numerals, and the following description will be omitted. FIG. 5 is a perspective view of the vibration isolation unit 50 before inserting the second bracket 56 into the first bracket 51 in the second embodiment. 6 (a) is a cross-sectional view of the anti-vibration unit 50, and FIG. 5 (b) is a cross-sectional view of the anti-vibration unit 50 along the VIb-VIb line in FIG. 6 (a).

As shown in FIG. 5, the first bracket 51 of the vibration isolation unit 50 is erected on both side edges of the plate-shaped bottom surface portion 52 to which the first member 11 is fixed and the bottom surface portion 52 on the X side in the second direction. A pair of plate-shaped side surface portions 53, a pair of plate-shaped facing surface portions 54 protruding toward each other from the upper end edges of the pair of side surface portions 53, and a plate-shaped bent portion 55 connected to the facing surface portions 54. To be equipped with.

The facing surface portion 54 is provided with an overhanging portion 54c on the Y side of the bent portion 55 in the third direction. Before assembling the first bracket 51 and the second bracket 56, the facing surface portion 54 and the bent portion 55 are located on the same plane, so that the plate material constituting the facing surface portion 54 and the bent portion 55 is bent with the overhanging portion 54c. By providing the slit 54d that divides the portion 55, the overhanging portion 54c and the bent portion 55 are formed. As a result, the bent portion 55 can be easily formed by the overhanging portion 54c and the slit 54d.

The insertion portion 57 of the second bracket 56 of the vibration isolation unit 50 is a metal portion to be inserted into the first bracket 51. The insertion portion 57 is a thick plate-shaped member provided extending from the mounting portion 31 in the third direction Y1, and the XZ cross section is formed in a rectangular shape. The insertion portion 57 is recessed from the outer surface 34 in the first direction Z to form a recess 58. The recess 58 is a portion where the bent portion 55 bent with respect to the facing surface portion 54 fits. The portion of the insertion portion 57 on the second direction X side of the recess 58 is the contact portion 59.

In order to assemble the first bracket 51 and the second bracket 56, first, between the bottom surface portion 52 of the first bracket 51 in a state where the bent portion 55 is not bent with respect to the facing surface portion 54 and the facing surface portion 54, and a pair. The insertion portion 57 of the second bracket 56 is inserted between the side surface portions 53 of the second bracket 56. After inserting the insertion portion 57, the bent portion 55 is bent into the recess 58 with respect to the facing surface portion 54 as shown in FIG. 6A. As a result, the first bracket 51 is fixed to the second bracket 56.

By setting the bending angle of the bending portion 55 with respect to the facing surface portion 54 to 90 degrees, the tip of the bending portion 55 comes into contact with the bottom surface 39 of the recess 58. By sandwiching the second bracket 56 in the first direction Z between the tip of the bent portion 55 and the bottom surface portion 52, the wobbling of the first bracket 51 with respect to the second bracket 56 can be further suppressed.

In a state where the bent portion 55 is not bent in the recess 58, the two facing surface portions 54 are provided apart from each other in the second direction X, so that the first bracket 51 can be easily deformed to the outside of the second direction X. Therefore, since the second bracket 56 can be inserted into the first bracket 51 while deforming the first bracket 51 to the outside of the second direction X, the second bracket 56 can be easily inserted and the anti-vibration unit 50 can be easily assembled. it can.

Further, in a state where the bent portion 55 is bent into the recess 58, the outer surface 55c of the two bent portions 55 in the second direction X is brought into contact with the contact portion 59 to bring the first bracket 51 into the second direction X. It can be hard to deform to the outside of. As a result, it is possible to prevent the first bracket 51 (vibration isolator 10) from wobbling in the second direction X with respect to the second bracket 56.

The bottom surface portion 52, the side surface portion 53, the facing surface portion 54, and the bent portion 55 are formed by providing rubber films 52b, 53b, 54b, 55b on the outer surface of the bent metal plates 52a, 53a, 54a, 55a. The metal plates 52a, 53a, 54a, 55a are integrally molded products with the first member 11. The rubber films 52b, 53b, 54b, 55b are integrally molded products with the anti-vibration substrate 13.

Since the rubber film 55b is provided up to the tip of the bent portion 55, the rubber film 55b comes into contact with the bottom surface 39. As a result, even if a load in the first direction Z is input from the second bracket 56 to the bent portion 55, the load can be reduced by the rubber film 55b. As a result, it is possible to prevent the bending angle of the bent portion 55 from changing or the facing surface portion 54 being pushed in the first direction Z via the bent portion 55 due to the load from the second bracket 56 in the first direction Z. it can.

As shown in FIG. 6B, since the rubber film 55b is provided up to the side edges 24a and 24b of the bent portion 55, the rubber film 55b comes into contact with the first contact surface 37 and the second contact surface 38 of the recess 58. Since the rubber film 55b is crushed between the metal plate 55a of the bent portion 55 and the first contact surface 37 and the second contact surface 38, the bent portion 55 and the first contact surface 37 and the second contact surface 38 are closely contacted with each other. Can be contacted. As a result, it is possible to further suppress the first bracket 51 from wobbling in the third direction Y with respect to the second bracket 56.

Next, the vibration isolation unit 60 according to the third embodiment will be described with reference to FIGS. 7 (a) and 7 (b). In the first embodiment, the case where the bent portion 24 is bent in the direction orthogonal to the third direction Y with respect to the facing surface portion 23 has been described. On the other hand, in the third embodiment, a case where the bent portions 62 and 63 are bent with respect to the facing surface portion 23 in a direction intersecting the third direction Y without being orthogonal to the third direction Y will be described. The same parts as those in the first embodiment are designated by the same reference numerals, and the following description will be omitted. FIG. 7A is a perspective view of the anti-vibration unit 60 before inserting the second bracket 65 into the first bracket 61 in the third embodiment, and FIG. 7B is a second bracket inserted into the first bracket 61. It is a perspective view of the anti-vibration unit 60 which fixed 65.

As shown in FIG. 7A, the first bracket 61 of the anti-vibration unit 60 includes bent portions 62 and 63 protruding toward each other from a pair of facing surface portions 23 separated in the second direction X, respectively. The bent portions 62 and 63 are metal plate materials, and are integrally molded products with the facing surface portion 23.

The bent portion 62 is connected to the third direction Y2 side of the facing surface portion 23, and projects from the facing surface portion 23 toward the third direction Y1 side. The bent portion 63 is connected to the third direction Y1 side of the facing surface portion 23, and projects from the facing surface portion 23 toward the third direction Y2 side. That is, the four bent portions 62, 62 are arranged in an X shape when viewed from the first direction Z to the third direction Y as up and down.

The insertion portion 66 of the second bracket 65 of the anti-vibration unit 60 is a metal portion to be inserted into the first bracket 61. The insertion portion 66 is a thick plate-shaped member provided extending from the mounting portion 31 in the third direction Y1, and the XZ cross section is formed in a rectangular shape. The insertion portion 66 is recessed from the outer surface 34 in the first direction Z to form a recess 67. The portion of the insertion portion 66 on the second direction X side of the recess 67 is the contact portion 68.

The recess 67 is a portion where the bent portions 62 and 63 bent with respect to the facing surface portion 23 are located inside. The recess 67 is formed in a diamond shape when viewed from the first direction Z to the third direction Y as up and down. The inner surface of the recess 67 includes two first contact surfaces 67a facing the third direction Y1 side and two second contact surfaces 67b facing the third direction Y2 side.

In order to assemble the first bracket 61 and the second bracket 65, first, between the bottom surface portion 21 of the first bracket 61 and the facing surface portion 23 in a state where the bent portions 62 and 63 are not bent with respect to the facing surface portion 23. And the insertion portion 66 of the second bracket 65 is inserted between the pair of side surface portions 22. After inserting the insertion portion 66, as shown in FIG. 7B, the bent portions 62 and 63 are bent into the recess 67 with respect to the facing surface portion 23. The bending angle of the bent portion 62 with respect to the facing surface portion 23 is set to 90 degrees, the bent portion 62 is brought into contact with the first contact surface 67a, and the bent portion 63 is brought into contact with the second contact surface 67b. As a result, the first bracket 61 is fixed to the second bracket 65.

A bent portion 62, which is bent in a direction in which the first contact surface 67a and the second contact surface 67b, which are not perpendicular to the third direction Y but intersect the third direction Y, intersect the third direction Y without being orthogonal to the third direction Y. Since the 63s come into contact with each other, the bent portion 62 applies a force in the third direction Y2 to the second bracket 65, and the bent portion 63 applies a force in the third direction Y1 to the second bracket 65. Therefore, it is possible to prevent the first bracket 61 from wobbling in the third direction Y with respect to the second bracket 65.

Further, since the bent portions 62 and 63 are in contact with the first contact surface 67a and the second contact surface 67b, respectively, that is, the bent portions 62 and 63 are in contact with the contact portion 68 on the second direction X side of the recess 67, respectively. Therefore, the first bracket 61 in which the two facing surface portions 23 are separated from each other in the second direction X can be hardly deformed to the outside of the second direction X. As a result, it is possible to prevent the first bracket 61 from wobbling in the second direction X with respect to the second bracket 65.

Since the bent portions 62 and 63 are provided on the third direction Y1 side and the third direction Y2 side of the facing surface portion 23, respectively, the dimension of the facing surface portion 23 in the third direction Y becomes large. The larger the dimension of the facing surface portion 23 in the third direction Y, the more the wobbling of the first bracket 61 with respect to the second bracket 65 can be suppressed. Therefore, the facing surface portion 23 in which the dimension of the third direction Y is secured by the bent portions 62 and 63 The wobbling of the first bracket 61 can be further suppressed.

Next, the vibration isolation unit 70 according to the fourth embodiment will be described with reference to FIGS. 8 (a) and 8 (b). In the first embodiment, the case where the second bracket 30 is sandwiched between the bottom surface portion 21 and the facing surface portion 23 in the first direction Z has been described. On the other hand, in the third embodiment, the case where the second bracket 75 is sandwiched between the bottom surface portion 21 and the bent portion 73 in the first direction Z will be described. The same parts as those in the first embodiment are designated by the same reference numerals, and the following description will be omitted. FIG. 8A is a perspective view of the anti-vibration unit 70 before inserting the second bracket 75 into the first bracket 71 according to the fourth embodiment, and FIG. 8B is a second bracket inserted into the first bracket 71. It is a perspective view of the anti-vibration unit 70 which fixed 75.

As shown in FIG. 8A, the first bracket 71 of the anti-vibration unit 70 has a plate-shaped bottom surface portion 21 to which the first member 11 is fixed and both side edges of the bottom surface portion 21 on the X side in the second direction. A pair of plate-shaped side surface portions 72 to be erected and a bent portion 73 projecting from the upper end edge of the pair of side surface portions 72 in the first direction Z are provided. The first bracket 71 is an integrally molded product in which the bottom surface portion 21, the side surface portion 72, and the bent portion 73 are connected to each other, and a metal plate material is bent along the outer surfaces 33 and 35 of the second bracket 75. Is formed.

The height of the side surface portion 72 from the bottom surface portion 21 is the same as the height from the outer surface 33 of the second bracket 75 to the bottom surface 39 of the recess 36. The bent portion 73 is a portion that bends into the recess 36 with respect to the side surface portion 72 in a state where the second bracket 75 is inserted into the first bracket 71.

The insertion portion 76 of the second bracket 75 of the anti-vibration unit 70 is a metal portion to be inserted into the first bracket 71. The insertion portion 76 is a thick plate-shaped member provided extending from the mounting portion 31 in the third direction Y1, and the XZ cross section is formed in a rectangular shape. The insertion portion 76 is recessed from the outer surface 34 in the first direction Z to form a recess 36. The second bracket 75 has a first contact surface 78 projecting from the outer surface 34 of the insertion portion 76 in the second direction X and facing the third direction Y1, and a second inner surface of the recess 36 facing the third direction Y2. It includes a contact surface 38.

To assemble the first bracket 71 and the second bracket 75, first, the second bracket 75 is between the pair of side surface portions 72 of the first bracket 71 in a state where the bent portion 73 is not bent with respect to the side surface portion 72. Insert the insertion portion 76 of. Next, as shown in FIG. 8B, with the side surface portion 72 in contact with the first contact surface 78, the bent portion 73 is bent into the recess 36 with respect to the side surface portion 72, and the side of the bent portion 73 is bent. The edge 73b is brought into contact with the second contact surface 38. Further, the bending angle of the bent portion 73 with respect to the side surface portion 72 is set to 90 degrees, the bent portion 73 is brought into contact with the bottom surface 39 of the recess 36, and the side edge 73b of the bent portion 73 is brought into contact with the second contact surface 38.

As a result, the movement of the first bracket 71 with respect to the second bracket 75 is restricted by the bottom surface portion 21 and the bending portion 73 in the first direction Z, and by the pair of side surface portions 72 in the movement of the second direction X. The contact between the side surface portion 72 and the first contact surface 78 restricts the movement in the third direction Y2, and the contact between the bent portion 73 and the second contact surface 38 restricts the movement in the third direction Y1. As a result, the first bracket 71 can be fixed to the second bracket 75.

Since the distance between the inner surface 77 of the recess 36 facing the third direction Y1 and the second contact surface 38 is set to be larger than the width of the bent portion 73 (dimension of the third direction Y), the side edge of the bent portion 73. The 73a and the inner surface 77 can be made non-contact. As a result, when the bent portion 73 is bent into the recess 36, it is possible to prevent the side edge 73a of the bent portion 73 from rubbing against the inner surface 77 of the recess 36, and the bent portion 73 can be easily bent.

Although the present invention has been described above based on the embodiments, the present invention is not limited to the above-described embodiments, and various improvements and modifications can be made without departing from the spirit of the present invention. It can be easily inferred. For example, the shapes of the vibration isolator 10, the first brackets 20, 51, 61, 71, the second brackets 30, 56, 65, 75 and the like are examples, and it is natural that various shapes are adopted. For example, it is possible to form the insertion portion of the second bracket into an elliptical shape or a polygonal shape in the XZ cross section, and set the shape of the first bracket along the shape of the second bracket.

In the first, second, and third embodiments, the case where the two facing surface portions 23, 54 are provided apart from each other in the second direction X has been described, but the present invention is not limited to this, and the facing surface portions are provided in the second direction. It is possible to connect the pair of side surface portions 22, 53 at the facing surface portions without separating them from X. In this case, since it is possible to suppress the deformation of the first bracket so as to spread in the second direction X, it is possible to prevent the first bracket from wobbling in the second direction X with respect to the second brackets 30, 56, 65.

In the first, second, and third embodiments, the case where the recesses 36, 58, and 67 are recesses having the bottom surface 39 has been described, but the present invention is not necessarily limited to this, and the recesses do not have the bottom surface 39. Of course, it is possible to make the two brackets 30, 56, 65 through holes penetrating in the first direction Z. In this case, since the load in the first direction Z is not applied to the bent portions 24, 55, 62, 63 from the bottom surface 39, the facing surface portions 23, 54 are pushed via the bent portions 24, 55, 62, 63 by the load. , It is possible to prevent a change in the distance between the bottom surface portions 21 and 52 and the facing surface portions 23 and 54. As a result, the first brackets 20, 51, 61 wobble in the first direction Z with respect to the second brackets 30, 56, 65 due to the change in the distance between the bottom surface portions 21, 52 and the facing surface portions 23, 54. Can be suppressed. Further, by setting the dimensions of the bent portions 24, 55, 62, 63 and the bottom surface 39 so that the bent portions 24, 55, 62, 63 and the bottom surface 39 do not come into contact with each other, the second brackets 30, 56 are similarly set. , 65 can prevent the first brackets 20, 51, 61 from wobbling in the first direction Z.

In the first and second embodiments, the side edges 24a and 24b of one bent portion 24 and 55 come into contact with the first contact surface 37 and the second contact surface 38 which are opposite inner surfaces of one recess 36 and 58. The case has been described, but it is not necessarily limited to this. Two bent portions 24, 55 are provided side by side in the third direction Y, and the side edge 24a of one of the two bent portions 24, 55 is brought into contact with the first contact surface 37, and the other bent portion 24, 55 of the two is brought into contact with the first contact surface 37. It is possible to bring the side edge 24b of the first bracket 20 and 51 into contact with the second contact surface 38 to restrict the movement of the first brackets 20 and 51 with respect to the second brackets 30 and 56 in the third direction Y. It is also possible to provide a plurality of recesses 36 and 58 corresponding to the two bent portions 24 and 55, respectively.

In the second embodiment, rubber films 52b, 53b, 54b, 55b are provided on the outer surface of the metal plates 52a, 53a, 54a, 55a, and the bottom surface portion 52, the side surface portion 53, the facing surface portion 54, and the bent portion 55 are formed. The case where it is formed has been described, but it is not necessarily limited to this. A rubber film can also be provided inside the metal plates 52a, 53a, 54a, 55a. As a result, the rubber film can be crushed between the metal plates 52a, 53a, 54a, 55a and the second bracket 56, and the first bracket 51 and the second bracket 56 can be brought into close contact with each other. The wobbling of the first bracket 51 with respect to 56 can be suppressed.

It is also possible to combine some or all of any of the above embodiments with some or all of the other embodiments. For example, the second brackets 30, 56, 65 in the first, second, and third embodiments can be provided with the first contact surface 78 in the fourth embodiment. Further, the bottom surface portion 21, the side surface portions 22, 72, the facing surface portions 23, and the bent portions 24, 62, 63, 73 in the first, third, and fourth embodiments are the metal plates 52a, 53a, in the second embodiment. It is possible to replace the bottom surface portion 52, the side surface portion 53, the facing surface portion 54, and the bent portion 55 with rubber films 52b, 53b, 54b, 55b provided on the outer surface of the 54a, 55a.

1,50,60,70 Anti-vibration unit 10 Anti-vibration device 11 1st member 12 2nd member 13 Anti-vibration base 20, 51, 61, 71 1st bracket 21, 52 Bottom part (2nd surface part)
22,53 Side surface (third surface)
23,54 Opposing surface (first surface)
24, 55, 62, 63, 73 Bending part 30, 56, 65, 75 Second bracket
31 mounting part
32, 57, 66, 76 Insertion part 36, 58, 67 Recessed part 37, 67a, 78 First contact surface 38, 67b Second contact surface 59, 68 Contact part 72 Side surface part (first surface part)
Z 1st direction X 2nd direction Y1, Y2 3rd direction Y1 One side of 3rd direction Y2 The other side of 3rd direction

Claims (4)

An anti-vibration device in which the first member and the second member are connected by an anti-vibration substrate composed of a rubber-like elastic body.
The first bracket to which the first member is fixed and
A second bracket having a mounting portion attached to the vibration source side or the vibration receiving side and an insertion portion connected to the mounting portion is provided.
The insertion portion, the the first bracket is sandwiched and a second direction perpendicular to said first direction a first direction, a concave portion is formed recessed is an outer surface of the insertion section to the first direction,
The first bracket includes a first surface portion in contact with the front Kigaimen that put around the recess,
It is provided with a bent portion connected to the first surface portion and bent into the recess with respect to the first surface portion.
The second bracket has a first contact surface with which the first bracket comes into contact with the first direction and one side in a third direction orthogonal to the second direction.
It is provided with an inner surface of the recess facing the other side in the third direction and a second contact surface with which the bent portion contacts .
A vibration-proof unit characterized in that the insertion portion is formed in the first bracket in a state where the bending portion is not bent with respect to the first surface portion so that the insertion portion can be inserted into one side in the third direction . The bent portion is bent in a direction orthogonal to the third direction with respect to the first surface portion, is connected to the edge of the first surface portion in the first direction or the second direction, and is connected to the side in the third direction. The anti-vibration unit according to claim 1, wherein the edge contacts the second contact surface . The first bracket has a second surface portion which is arranged so as to sandwich the insertion portion in the first direction between the first surface portion and the first surface portion.
A pair of third surface portions that connect the first surface portion and the second surface portion and sandwich the insertion portion in the second direction are provided .
The anti-vibration unit according to claim 1 or 2, wherein the recess is formed over the entire length of the insertion portion in the second direction . The first surface portions are provided apart from each other in the second direction, and are connected to each other via the second surface portion and the third surface portion.
The bent portion is provided on the first surface portion separated from the second direction, respectively.
The anti-vibration unit according to claim 3, wherein the second bracket includes a contact portion in which the outer surfaces of the bent portion in the second direction come into contact with each other.

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