JP2022001785A - Strut mount - Google Patents

Abstract

To provide a strut mount capable of extending an adjustment width of an axial directional spring.SOLUTION: A strut mount 1 comprises an inner cylinder 2, an outer cylinder 3, an elastic body 4 that connects the inner cylinder 2 and the outer cylinder 3, and a coating resin 5 that covers an outer peripheral surface f21 of the inner cylinder 2. The coating resin 5 has a protrusion part 5a extending in an axial direction. The protrusion part 5a overlaps with at least a part of an axially extending part of the outer cylinder 3 via the elastic body 4 in an axial direction when the strut mount is mounted in a vehicle.SELECTED DRAWING: Figure 1

Description

The present invention relates to a strut mount.

In the conventional strut mount, the surface of the inner cylinder is coated with a resin for the purpose of facilitating the connection between the metal inner cylinder and the elastic body, and the inner cylinder is passed through the coated resin. And the elastic body are connected to each other (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2019-19859

According to the conventional strut mount, even if the connecting surface between the inner cylinder and the elastic body has a complicated shape, the inner cylinder and the elastic body can be formed by coating the surface of the inner cylinder with a resin. Can be easily connected.

However, the conventional strut mount has room for improvement in that the adjustment range of the axial directional spring is widened.

It is an object of the present invention to provide a strut mount capable of increasing the adjustment range of the axial directional spring.

The strut mount according to the present invention includes an inner cylinder, an outer cylinder, an elastic body that connects the inner cylinder and the outer cylinder, and a coating resin that covers the outer peripheral surface of the inner cylinder. The inner cylinder is made of metal, the outer cylinder has an axially extending portion, and the coating resin has an axially extending protrusion. Overlaps with at least a part of the axially extending portion of the outer cylinder via the elastic body in the direction perpendicular to the axis when mounted on the vehicle. According to the strut mount according to the present invention, it is possible to widen the adjustment range of the axial spring.

In the strut mount according to the present invention, the axial height of the protruding portion is preferably lower than the axial height of the axial extending portion of the outer cylinder. In this case, the adjustment range of the axial directional spring can be expanded without changing the axial dimension of the strut mount.

In the strut mount according to the present invention, it is preferable that the inner surface of the protrusion in the axial direction is inclined inward in the direction perpendicular to the axis from the axial protrusion of the protrusion toward the root of the protrusion. In this case, the durability of the protruding portion can be enhanced.

In the strut mount according to the present invention, the outer surface of the protrusion in the axial direction can be extended along the axial direction. In this case, the axial directional spring can be easily adjusted along the axial direction.

In the strut mount according to the present invention, it is preferable that the protruding portion is embedded in the elastic body. In this case, the durability of the elastic body can be enhanced.

According to the present invention, it is possible to provide a strut mount in which a spring in the direction perpendicular to the axis can be adjusted.

It is sectional drawing which shows the strut mount which concerns on 1st Embodiment of this invention, which was incorporated in the exemplary suspension mechanism, in the axial cross section. It is an enlarged view of FIG. FIG. 3 is a cross-sectional view showing the strut mount in an axial cross section before being incorporated into the exemplary suspension mechanism of FIG. 1. It is sectional drawing which shows the strut mount which concerns on the 2nd Embodiment of this invention, which was incorporated in the exemplary suspension mechanism, in the axial cross section. FIG. 3 is a cross-sectional view showing the strut mount in an axial cross section before being incorporated into the exemplary suspension mechanism of FIG.

Hereinafter, strut mounts according to various embodiments of the present invention will be described with reference to the drawings.

The strut mount 1 according to the present embodiment includes an inner cylinder 2, an outer cylinder 3, an elastic body 4 that connects the inner cylinder 2 and the outer cylinder 3, and a coating resin 5 that covers the outer peripheral surface f21 of the inner cylinder 2. , Is equipped. The inner cylinder 2 is made of metal. The outer cylinder 3 includes an axially extending portion extending in the axial direction. The coating resin 5 has a protruding portion 5a extending in the axial direction. The protruding portion 5a overlaps with at least a part of the axially extending portion of the outer cylinder 3 via the elastic body 4 in the axial direction when the vehicle is mounted.

Here, the "axial direction" means a direction parallel to the central axis O of the strut mount 1 (hereinafter, also simply referred to as "central axis O"). Further, the "axially extending portion of the outer cylinder 3" and the "axially oriented" mean a direction orthogonal to the axial direction. Further, the "circumferential direction" refers to the direction around the central axis O. Further, in this case, the axial direction is synonymous with the "diameter direction".

FIG. 1 is a cross-sectional view showing a strut mount 1A according to a first embodiment of the present invention incorporated in an exemplary suspension mechanism M1 in an axial cross section.

Referring to FIG. 1, the suspension mechanism M1 includes a vehicle body side panel 21, a bracket 22, and a strut mount 1A. The strut mount 1A is arranged between the vehicle body side panel 21 and the bracket 22. In this example, the vehicle body side panel 21 is fixed to the body or frame. Further, in this example, the strut mount 1A is supported by the bracket 22 via the thrust bearing 24. In this example, the bracket 22 is a suspension coil bracket. The suspension coil bracket is supported by the upper end of the suspension coil (not shown).

Further, in this example, the strut rod 23 penetrates the strut mount 1A. The strut rod 23 constitutes a part of the shock absorber on the wheel side. In this example, the strut rod 23 penetrates the vehicle body side panel 21 and the bracket 22.

The strut mount 1A is fixed to the bracket 22 by the lower fixing member 25 via the thrust bearing 24. In this example, the lower fixing member 25 is screwed onto the strut rod 23. The strut mount 1A is fixed to the bracket 22 by tightening the lower fixing member 25. The strut mount 1A fixed to the bracket 22 receives the load on the vehicle body side through the vehicle body side panel 21. As a result, the strut mount 1A is compressed in the axial direction when mounted on a vehicle (hereinafter, also referred to as “1 W load”).

Reference numeral 27 is a stopper. The stopper 27 comes into contact with the vehicle body side panel 21 when the movement of the strut rod 23 to the lower side becomes a predetermined amount or more. Thereby, the stopper 27 prevents the strut rod 23 from being pulled out from the strut mount 1A. The stopper 27 is fixed to the strut rod 23 by the upper fixing member 26 via the lower fixing member 25. In this example, the upper fixing member 26 is screwed onto the strut rod 23. The stopper 27 is fixed to the strut rod 23 between the stopper 27 and the lower fixing member 25 by tightening the upper fixing member 26.

FIG. 3 is a cross-sectional view showing the strut mount 1A in an axial cross section before being incorporated into the suspension mechanism M1.

In the strut mount 1A, the inner cylinder 2 has an upper end portion 2a, an intermediate portion 2b, and a lower end portion 2c. The upper end portion 2a has an opening A2 through which the strut rod 23 penetrates. In the present embodiment, the upper end portion 2a is an annular circle in the axial direction. The outer peripheral edge of the upper end portion 2a is connected to the intermediate portion 2b via the first bent portion 2d. The intermediate portion 2b is a side wall extending in the axial direction. In the present embodiment, the intermediate portion 2b has a cylindrical shape. The upper end of the intermediate portion 2b is connected to the annular first bent portion 2d. The lower end of the intermediate portion 2b is connected to the lower end portion 2c via the annular second bent portion 2e. In the present embodiment, the lower end portion 2c is an annular circle in the axial direction.

The inner cylinder 2 is made of metal. The inner cylinder 2 can be formed, for example, by pressing a circular steel plate having an opening A2. However, the metal forming the inner cylinder 2 is not limited to steel. Examples of such metals include aluminum. Further, the manufacturing method of the inner cylinder 2 is not limited to press working. For example, the inner cylinder 2 can be manufactured by a known process such as casting or cutting.

The coating resin 5 covers the outer peripheral surface f21 of the inner cylinder 2. The coating resin 5 can cover the surface f2 of the inner cylinder 2. In the present embodiment, the coating resin 5 covers both the outer peripheral surface f21 of the inner cylinder 2 and the inner peripheral surface f22 of the inner cylinder 2. However, the coating resin 5 can cover only the outer peripheral surface f21 of the inner cylinder 2.

The coating resin 5 has a protruding portion 5a extending in the axial direction. The protruding portion 5a protrudes from the upper end portion 2a of the inner cylinder 2 to one side in the axial direction. Here, the "one side in the axial direction" means the vehicle body side when the vehicle is mounted or the upper side when the vehicle is mounted. Specifically, the axially protruding end 5a1 of the protruding portion 5a protrudes to one side in the axial direction from the outer peripheral surface f21 of the upper end portion 2a of the inner cylinder 2. However, as in the present embodiment, when the upper end portion 2a of the inner cylinder 2 protrudes from the intermediate portion 2b to one side in the axial direction, the protruding portion 5a protrudes from the upper end of the intermediate portion 2b of the inner cylinder 2. It suffices if it protrudes to one side in the axial direction. Referring to FIG. 3, the axially protruding end 5a1 of the protruding portion 5a may protrude to one side in the axial direction from the upper end of the intermediate portion 2b of the inner cylinder 2. Referring to FIG. 3, the axial protrusion 5a1 of the protruding portion 5a may be at least at the position of the first bent portion 2d of the inner cylinder 2 in the axial cross-sectional view.

In the present embodiment, the protruding portion 5a is an annular protruding portion extending in the circumferential direction. However, the protruding portion 5a can be a plurality of protruding portions provided intermittently in the circumferential direction. Further, the protruding portion 5a can be one protruding portion divided in the circumferential direction.

In the present embodiment, the protruding portion 5a protrudes from the upper end portion 2a and the first bent portion 2d of the inner cylinder 2. It is preferable that the protruding portion 5a protrudes from at least the upper end portion 2a of the inner cylinder 2. In this case, even if the inner cylinder 2 omits the first bent portion 2d of the inner cylinder 2, the protruding portion 5a of the coating resin 5 can be applied to the inner cylinder 2.

The coating resin 5 can be formed of various resins. Examples of the resin include thermosetting resins. Examples of the thermosetting resin include polyamide (PA). Specific examples include nylon 66. However, the thermosetting resin is not limited to polyamide. Further, as the resin, for example, a thermoplastic resin such as polypropylene (PP) can be used depending on the operating temperature condition of the strut mount 1.

On the other hand, the outer cylinder 3 is provided with an axially extending portion extending in the axial direction. Here, the "axially extending portion of the outer cylinder 3" is referred to as "a portion of the outer cylinder 3 extending in the axial direction". According to the present invention, the axial extending portion of the outer cylinder 3 includes not only a portion extending parallel to the central axis О but also a portion extending in a direction other than the direction orthogonal to the central axis О. include.

In the strut mount 1A, the outer cylinder 3 has an upper end portion 3a, an intermediate portion 3b, and a lower end portion 3c. The upper end portion 3a has an opening A3 through which the strut rod 23 penetrates. In the present embodiment, the upper end portion 3a is an annular circle in the axial direction. The outer peripheral edge of the upper end edge 3a is connected to the intermediate portion 3b via the first bent portion 3d. The intermediate portion 3b is a side wall extending in the axial direction. In the present embodiment, the intermediate portion 3b has a cylindrical shape. The upper end of the intermediate portion 3b is connected to the annular first bent portion 3d. The lower end of the intermediate portion 3b is connected to the lower end portion 3c via the annular second bent portion 3e. In the present embodiment, the lower end portion 3c is an annular circle in the axial direction. In the present embodiment, the lower end portion 3c extends in the axial direction from the second bent portion 3e. That is, in the present embodiment, the lower end portion 3c is in the same position as the second bent portion 3e in the axial direction.

In the present embodiment, the axially extending portion of the outer cylinder 3 includes an upper end portion 3a, a first bent portion 3d, an intermediate portion 3b, and a second bent portion 3e (lower end portion 3c). That is, in the present embodiment, the entire outer cylinder 3 is an axially extending portion extending in the axial direction.

The elastic body 4 connects the inner cylinder 2 and the outer cylinder 3. As a result, the elastic body 4 elastically connects the inner cylinder 2 and the outer cylinder 3. The elastic body 4 can be formed of various elastic materials. Examples of the elastic material include rubber and elastic elastomer. In this embodiment, the elastic material is rubber.

The inner cylinder 2 is connected to the elastic body 4 via the coating resin 5. As a result, the inner cylinder 2 is firmly connected to the elastic body 4. In particular, in the present embodiment, the protruding portion 5a of the coating resin 5 is embedded in the elastic body 4. As a result, the inner cylinder 2 is firmly connected to the elastic body 4. Further, in the present embodiment, the outer cylinder 3 is embedded in the elastic body 4. As a result, the outer cylinder 3 is firmly connected to the elastic body 4.

The protruding portion 5a of the covering resin 5 overlaps with at least a part of the axially extending portion of the outer cylinder 3 via the elastic body 4 in the axial direction when the coating resin 5 is mounted on the vehicle. In the present embodiment, the elastic body 4 is completely buried between the overlapping portions of the inner cylinder 2 and the outer cylinder 3. Therefore, in the present embodiment, in the portion where the inner cylinder 2 and the outer cylinder 3 overlap, the inner cylinder 2 and the outer cylinder 3 are totally connected by the elastic body 4.

FIG. 2 is an enlarged view of FIG. 1. In the present embodiment, the protruding portion 5a overlaps with a part of the upper end portion 3a, the first bent portion 3d, the intermediate portion 3b, the second bent portion 3e (lower end portion 3c), and the elastic body 4 when mounted on the vehicle. is doing.

Next, the action and effect of the strut mount 1 will be described with reference to the strut mount 1A.

In the strut mount 1, the outer cylinder 3 is arranged so as to surround the fixing member (for example, the inner cylinder 2) fixed to the shock absorber (strut rod 23) in the circumferential direction. As a result, the axial spring of the strut mount 1 (spring constant in the axial direction of the strut mount 1) has the axial length Lx of the elastic body 4 interposed between the inner cylinder 2 and the outer cylinder 3. It can be adjusted by changing it. For example, the axial spring of the strut mount 1 can be increased by shortening the axial length Lx. Therefore, in the strut mount 1, if the region in which the length Lx in the axial direction of the elastic body 4 is short is expanded in the axial direction, the adjustment range of the axial spring of the strut mount 1 can be expanded.

Referring to FIG. 2, in the strut mount 1A, the protruding portion 5a of the coating resin 5 is an elastic body, leaving a part on one side in the axial direction of the upper end portion 3a of the outer cylinder 3 in the axial direction when mounted on a vehicle. It overlaps through 4.

According to the strut mount 1A, the axial length Lx1 of the elastic body 4 interposed between the outer cylinder 3 and the protrusion 5a has the elastic body 4 interposed between the outer cylinder 3 and the inner cylinder 2. At that time, the length of the elastic body 4 in the axial direction is shorter than Lx0. Therefore, as shown in the region X1 of FIG. 2, the strut mount 1A has a protrusion 5a provided on the coating resin 5, so that the strut mount 1A has no protrusion 5a on the coating resin 5 in the region X1. The axial spring can be increased. In the present embodiment, the protrusion 5a of the coating resin 5 compensates for the amount that the outer edge of the upper end portion 2a in the axial direction is reduced inward in the axial direction by the first bent portion 2d of the inner cylinder 2 to the outside in the axial direction. ..

Further, according to the strut mount 1A, the protruding portion 5a of the coating resin 5 protrudes from the inner cylinder 2 to one side in the axial direction. Therefore, as shown in the region X2 of FIG. 2, the strut mount 1A is a spring in the axial direction as much as the coating resin 5 is provided with the protrusion 5a, as compared with the case where the coating resin 5 is not provided with the protrusion 5a. It is possible to secure a large area in the axial direction by the area X2. In the present embodiment, it is possible to secure a large area in the axial direction for raising the axial spring by the amount that the protruding portion 5a of the coating resin 5 protrudes to one side in the axial direction from the upper end portion 2a of the inner cylinder 2. can.

In the strut mount 1A, the axial length Lx1 of the elastic body 4 interposed between the outer cylinder 3 and the protruding portion 5a is the upper end portion 3a of the outer cylinder 3 as compared with the intermediate portion 3b of the outer cylinder 3. It is short (narrow). Thereby, in the present embodiment, the axial spring can be adjusted higher toward one side in the axial direction.

As described above, according to the strut mount 1A, the protruding portion 5a of the coating resin 5 covers at least a part of the axially extending portion of the outer cylinder 3 and the elastic body 4 in the axial direction when the coating resin 5 is mounted on the vehicle. I'm wrapping. Therefore, according to the strut mount 1A, it is possible to widen the adjustment range of the axially perpendicular spring by appropriately setting the axial length of the protrusion 5a in the coating resin 5.

Further, according to the strut mount 1A, when the elastic body 4 is interposed between the outer cylinder 3 and the inner cylinder 2, the outer cylinder 3 and the outer cylinder 3 protrude instead of the axial length Lx0 of the elastic body 4. By using the axial length Lx1 of the elastic body 4 interposed between the portion 5a, the axial longitudinal spring can be adjusted. That is, according to the strut mount 1A, the axial spring of the strut mount 1A can be easily adjusted only by appropriately changing the shape of the protruding portion 5a of the coating resin 5 without changing the shape of the inner cylinder 2. be able to. Therefore, according to the strut mount 1A, the axial spring can be easily adjusted. Further, according to the strut mount 1A, the rigidity ratio between the axial longitudinal spring and the axial spring is obtained by using the protruding portion 5a of the covering resin without processing the inner cylinder 2 which requires complicated processing such as press molding. Can be attached.

In the strut mount 1, the axial height of the protruding portion 5a can be lower than the axial height of the axial extending portion of the outer cylinder 3. In this case, the adjustment range of the axial directional spring of the strut mount 1A can be expanded without changing the axial dimension of the strut mount 1A.

Referring to FIG. 2, in the strut mount 1A, the axial protrusion 5a1 of the protrusion 5a is located at a position lower than the upper end of the outer cylinder 3 on the other side in the axial direction. Here, the "other side in the axial direction" means the wheel side when the vehicle is mounted or the lower side when the vehicle is mounted. That is, the protruding portion 5a of the covering resin 5 overlaps with the elastic body 4 in the axial direction, leaving a part of the upper end portion 3a of the outer cylinder 3 on one side in the axial direction when mounted on the vehicle. In this case, the projecting portion 5a does not project beyond the upper end of the outer cylinder 3 to one side in the axial direction. Therefore, in this case, the adjustment range of the axial spring of the strut mount 1A can be expanded without changing the axial dimension of the strut mount 1A.

Further, in the strut mount 1, it is preferable that the inner surface f51 in the axial direction of the protrusion 5a is inclined inward in the axial direction from the axial protrusion 5a1 of the protrusion 5a toward the root of the protrusion 5a. In this case, the durability of the protruding portion 5a can be enhanced.

Referring to FIG. 2, in the strut mount 1A, the axially perpendicular inner surface f51 of the protrusion 5a is a plane formed by a straight line in the axial cross-sectional view. The inner surface f51 in the axial direction of the protrusion 5a has an inner surface f51 in the axial direction of the protrusion 5a, which is inclined inward in the axial direction with respect to the axial direction at an acute angle α. That is, in the strut mount 1A, the axially perpendicular inner surface f51 of the protrusion 5a is inward in the axial direction from the axial protrusion 5a1 of the protrusion 5a along the other side in the axial direction toward the root of the protrusion 5a. It is an inclined tapered surface. However, if the axial inner surface f51 of the protrusion 5a is inclined inward in the axial direction from the axial protrusion 5a1 of the protrusion 5a along the other side in the axial direction toward the root of the protrusion 5a. good. As described above, when the protruding portion 5a has an inclined surface, the durability of the protruding portion 5a can be improved while suppressing the increase in size of the protruding portion 5a. Further, in this case, by suppressing the increase in size of the protruding portion 5, it is possible to suppress an increase in weight and an increase in the amount of resin used.

Further, in the strut mount 1, the outer surface f52 in the axial direction of the protrusion 5a can be assumed to extend along the axial direction. In this case, since the direction of the outer surface f52 in the axial direction of the protruding portion 5a is always oriented outward in the axial direction along the axial direction, the strut can be simply changed from the shape of the outer cylinder 3 to a desired shape. The axial spring of mount 1 can be easily adjusted along the axial direction.

Referring to FIG. 1, in the strut mount 1A, the axial outer surface f52 of the protrusion 5a extends along the axial direction. Here, "extending along the axial direction" means "extending substantially parallel to the axial direction (central axis O)". Preferably, "extending along the axial direction" means "extending parallel to the axial direction", but in the present invention, when it is slightly tilted due to manufacturing error, assembly error, etc. Also includes. As a result, the outer surface f52 in the axial direction becomes a reference in the axial direction of the axial length Lx1 of the elastic body 4 interposed between the outer cylinder 3 and the protrusion 5a. In this case, the direction in which the outer surface f52 in the axial direction of the protrusion 5a is always directed outward in the axial direction along the axial direction. Therefore, in this case, the axis of the strut mount 1 is simply changed by appropriately changing the shape along the axial direction of the outer cylinder 3 so that the direction of the inner surface f3 in the axial direction of the outer cylinder 3 is oriented in a desired direction. The directional spring can be easily adjusted along the axial direction.

Further, in the strut mount 1, the protruding portion 5a is preferably embedded in the elastic body 4. In this case, the durability of the elastic body 4 can be enhanced as compared with the case where the protruding portion 5a is only in contact with the elastic body 4.

Referring to FIG. 1, in the strut mount 1A, the protrusion 5a is embedded in the elastic body 4 by being integrally molded with the elastic body 4. In the present embodiment, the entire protruding portion 5a is embedded in the elastic body 4. However, at least a part of the protruding portion 5a may be embedded in the elastic body 4. In this case, the durability of the elastic body 4 can be enhanced as compared with the case where the protruding portion 5a is only in contact with the elastic body 4.

FIG. 4 is a cross-sectional view showing a strut mount 1B according to a second embodiment of the present invention incorporated in an exemplary suspension mechanism M2 in an axial cross section. FIG. 5 is a cross-sectional view showing the strut mount 1B in an axial cross section before being incorporated into the exemplary suspension mechanism M2. For the following description, substantially the same parts as the strut mount 1A use the same reference numerals.

Referring to FIG. 4, the suspension mechanism M2 includes a vehicle body side panel 21, a bracket 22, and a strut mount 1A, similarly to the suspension mechanism M1. The strut mount 1B is arranged between the vehicle body side panel 21 and the bracket 22 like the strut mount 1A. Further, in this example, the strut mount 1A is supported by the bracket 22 via the elastic member 28 and the thrust bearing 24. Like the strut mount 1A, the strut mount 1B is compressed in the axial direction when mounted on a vehicle.

Referring to FIG. 5, in the strut mount 1B, the inner cylinder 2 has a first upper end portion 2a1 and a second upper end portion 2a2, an intermediate portion 2b, and a first lower end portion 2c1 and a second lower end portion 2c2. .. The first upper end portion 2a1 has an opening A2 through which the strut rod 23 penetrates. In the present embodiment, the first upper end portion 2a1 is a side wall extending in the axial direction. In the present embodiment, the first upper end portion 2a1 is cylindrical in the axial direction. The lower end of the first upper end portion 2a1 is connected to the second upper end portion 2a2 via the annular third bent portion 2f. The second upper end portion 2a2 is an annular circle in the axial direction. In the present embodiment, the inner peripheral edge of the second upper end portion 2a2 is connected to the annular third bent portion 2f. The outer peripheral edge of the second upper end portion 2a2 is connected to the intermediate portion 2b via the first bent portion 2d. The lower end of the intermediate portion 2b is connected to the first lower end portion 2c1 via the second bent portion 2e. In the present embodiment, the first lower end portion 2c1 is an annular circle in the axial direction. In the present embodiment, the inner peripheral edge of the first lower end portion 2c1 is connected to the annular second bent portion 2e. The outer peripheral edge of the first lower end portion 2c1 is connected to the second lower end portion 2c2 via the fourth bent portion 2g. In the present embodiment, the second lower end portion 2c2 is an annular circle in the axial direction. In the present embodiment, the inner peripheral edge of the second lower end portion 2c2 is connected to the annular fourth bent portion 2g.

Further, referring to FIG. 5, in the strut mount 1B, the outer cylinder 3 has a first upper end portion 3a1 and a second upper end portion 3a2, an intermediate portion 3b, and a lower end portion 3c. The first upper end portion 3a1 has an opening A3 through which the strut rod 23 penetrates. In the present embodiment, the first upper end portion 3a1 is an annular circle in the axial direction. The outer peripheral edge of the first upper end edge 3a1 is connected to the second upper end portion 3a2 via the third bent portion 3f. The second upper end portion 3a2 is a side wall extending in the axial direction. In the present embodiment, the second upper end portion 3a2 has a cylindrical shape. The upper end of the second upper end portion 3a2 is connected to the annular third bent portion 3f. The lower end of the second upper end portion 3a2 is connected to the intermediate portion 3b via the annular first bent portion 3d. In the present embodiment, a through hole 3h is formed in the first bent portion 3d. An elastic body 4 is interposed in the through hole 3h.

In the present embodiment, the axially extending portion of the outer cylinder 3 includes a first upper end portion 3a1, a third bent portion 3f, a second upper end portion 3a2, a first bent portion 3d, an intermediate portion 3b, a second bent portion 3e, and a second bent portion 3e. Includes the lower end 3c. That is, in the present embodiment, the entire outer cylinder 3 is an axially extending portion extending in the axial direction.

According to the strut mount 1B, the protruding portion 5a of the coating resin 5 overlaps with at least a part of the outer cylinder 3 via the elastic body 4 in the axial direction when the coating resin 5 is mounted on the vehicle. Therefore, according to the strut mount 1B, as in the strut mount 1A, it is possible to expand the adjustment range of the axial longitudinal spring by appropriately setting the axial length of the protrusion 5a in the coating resin 5. Become.

Further, according to the strut mount 1B, similarly to the strut mount 1A, the shape of the protruding portion 5a of the coating resin 5 is only changed as appropriate without changing the shape of the inner cylinder 2, and the strut mount 1A is oriented in the axial direction. The spring can be easily adjusted. Further, according to the strut mount 1B, as in the strut mount 1A, by using the protruding portion 5a of the coating resin 5 without processing the inner cylinder 2 which requires complicated processing such as press molding, the spring in the axial direction can be used. The rigidity ratio with the axial spring can be set. Further, in this case, since the through hole 3h is formed in the outer cylinder 3, more complicated adjustment of the axial directional spring becomes possible.

As described in each of the above embodiments, according to the present invention, it is possible to provide a strut mount 1 in which an axial perpendicular spring can be adjusted.

The above description describes an exemplary embodiment of the present invention, and various modifications can be made without departing from the scope of the claims. The various configurations adopted in this embodiment and the exemplary configurations described above can be interchanged or combined as appropriate.

1,1A-1B: Strut mount, 2: Inner cylinder, 2a: Upper end, 2a1: First upper end, 2a2: Second upper end, 2b: Intermediate, 2c: Lower end, 2c1: First lower end, 2c2: 2nd lower end, 2d: 1st bent, 2e: 2nd bent, 2f: 3rd bent, 2g: 4th bent, 3: outer cylinder, 3a: upper end, 3a1: 1st upper end Part, 3a2: 2nd upper end part, 3b: intermediate part (axially extending part of outer cylinder), 3c: lower end part, 3d: 1st bent part, 3e: 2nd bent part, 3f: 3rd bent part, 3h: Through hole, 4: Elastic body, 5: Coating resin, 5a: Protruding part, 5a1: Axial tip of protruding part, 21: Body side panel, 22: Bracket, 23: Strut rod, 24: Thrust bearing, 25 : Lower fixing member, 26: Upper fixing member, f2: Surface of inner cylinder, f21: Outer surface of inner cylinder, f22: Inner peripheral surface of inner cylinder, f3: Inner surface of outer cylinder 3 in axial direction, f51: Projection Inner surface in the axial direction of the part, f52: Outer surface in the axial direction of the protruding part, M1, M2: Suspension mechanism O: Central axis of strut mount, α: Angle

Claims (5)

It includes an inner cylinder, an outer cylinder, an elastic body that connects the inner cylinder and the outer cylinder, and a coating resin that covers the outer peripheral surface of the inner cylinder.
The inner cylinder is made of metal and is made of metal.
The outer cylinder is provided with an axially extending portion extending in the axial direction.
The coating resin has a protrusion extending in the axial direction, and has a protrusion.
The strut mount overlaps with at least a part of the axially extending portion of the outer cylinder via the elastic body in the axial direction when the projecting portion is mounted on a vehicle. The strut mount according to claim 1, wherein the axial height of the protruding portion is lower than the axial height of the axial extending portion of the outer cylinder. The strut mount according to claim 1 or 2, wherein the inner surface of the protrusion in the axial direction is inclined inward in the axial direction from the axial protrusion of the protrusion toward the root of the protrusion. The strut mount according to any one of claims 1 to 3, wherein the outer surface in the axial direction of the protrusion extends along the axial direction. The strut mount according to any one of claims 1 to 4, wherein the protruding portion is embedded in the elastic body.

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