JP5156490B2 - Strut mount - Google Patents

Description

  The present invention relates to a strut mount that elastically supports a strut disposed between a wheel and a vehicle body panel on the vehicle body panel.

This type of strut mount includes, for example, an outer cylinder whose outer peripheral surface is covered with a rubber film, an inner cylinder disposed inside the outer cylinder, an outer cylinder and an inner cylinder as shown in Patent Document 1 below. A cylindrical elastic body disposed between the cylinder and elastically connecting the two.
Here, the strut that the strut mount supports on the vehicle body panel is provided with a shock absorber having a strut rod extending from the wheel side toward the vehicle body panel side. In addition, a fitting recess having an inner peripheral surface that gradually increases in diameter from the vehicle body panel side toward the wheel side is formed on the lower surface of the vehicle body panel facing the wheel side.
In the strut mount, the inner cylinder is attached to the upper end of the strut rod on the side of the vehicle body panel, and the outer cylinder is fitted in the fitting recess of the vehicle body panel, so that the strut is elastic to the vehicle body panel. It comes to support.
With such a configuration, vibration transmitted from the road surface via the wheels is mainly absorbed by the struts, and vibration that cannot be absorbed by the struts is absorbed by the strut mount, so that vibrations from the road surface are prevented from being transmitted to the vehicle body panel. It has become.
JP 2004-232824 A

  By the way, in recent years, by suppressing the displacement of the outer cylinder of the strut mount with respect to the fitting recess of the vehicle body panel, the relative displacement between the vehicle body panel and the strut is suppressed, and the steering stability and ride comfort of the vehicle are improved. Furthermore, there is an increasing demand for suppressing the generation of abnormal noise.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a strut mount that can suppress relative displacement between a vehicle body panel and a strut.

In order to solve the above problems and achieve such an object, the strut mount of the present invention includes an outer cylinder whose outer peripheral surface is coated with a rubber film, an inner cylinder disposed inside the outer cylinder, A vehicle body panel in a strut rod provided between the outer cylinder and the inner cylinder and having a cylindrical elastic body that elastically connects the two and extending from the wheel side toward the vehicle body panel side The inner cylinder is attached to the upper end portion on the side, and the outer cylinder is fitted in a fitting recess formed on the vehicle body panel and having an inner peripheral surface that gradually increases in diameter from the vehicle body panel side toward the wheel side. The outer peripheral surface of the outer cylinder gradually increases in diameter as it goes from the vehicle body panel side to the wheel side along the axial direction, and both end portions in the axial direction of the outer cylinder are formed in the rubber film. Both located on the outer peripheral surface of At least one of the one part, by thickening the swelled thickness than the other outwardly in the radial direction, of the fitting recess when the outer cylinder is fitted into the fitting in the recess The bulging part which contact | abuts to a surrounding surface is formed over the perimeter, It is characterized by the above-mentioned.

In this invention, since at least one of the both side portions of the rubber film is formed with a bulging portion that bulges outward in the radial direction and is thicker than others, the rubber film is fitted to the rubber film. A surface generated between the rubber film and the inner peripheral surface of the fitting recess when the bulging portion is crushed when pressed against the inner peripheral surface of the recess to fit the outer cylinder into the fitting recess. Of the pressure, the surface pressure generated between the bulging portion and the inner peripheral surface of the fitting recess, that is, the frictional force is locally increased. In addition, since the bulging portion is formed over the entire circumference, it is possible to suppress the frictional force from being varied for each portion along the circumferential direction.
As described above, the strut mount has a so-called twisting force that tilts its axis with respect to the axis of the fitting recess, a horizontal force perpendicular to the axis, or a rotational force around the axis, and further to this axis. Even if the vertical force along the line acts, it is possible to suppress the displacement of the strut mount with respect to the fitting recess.
In addition, since the bulging portion is formed in the rubber film, even if a dimensional variation or the like occurs in the fitting recess or the strut mount, the bulge is expanded when the outer cylinder of the strut mount is fitted into the fitting recess. When the protruding portion is crushed as described above, this dimensional variation can be absorbed.
Further, since the bulging portion is formed in a portion of the rubber film located on the outer peripheral surface of the outer cylinder, when the outer cylinder is fitted into the fitting recess as described above, the bulging portion becomes large. It is possible to prevent the entire rubber film from being crushed and pressed against the inner peripheral surface of the fitting recess with the same surface pressure. That is, it becomes possible to regulate the amount of compressive deformation of the bulging portion, and the surface pressure generated between the bulging portion and the inner peripheral surface of the fitting recess can be reliably increased locally.

Here, the bulging portion may be separately formed on both side portions of the rubber film.
In this case, since the bulging portions are separately formed on the both side portions of the rubber film, the portions where the surface pressure and the frictional force are increased as described above are surely secured at two locations along the axial direction of the outer cylinder. Can be generated. Therefore, when a force in the twisting direction is applied to the strut mount, it is possible to suppress the swing angle of the strut mount with respect to the fitting recess by receiving the force at the two bulging portions described above. It is possible to reliably suppress the strut mount from being displaced relative to the fitting recess.
In addition, since the bulging portions are formed separately on the both side portions of the rubber film in this way, the outer cylinder and the fitting concave portion are gradually enlarged in diameter from the vehicle body panel side toward the wheel side. Together, when the strut mount is fitted into the fitting recess, it becomes possible to easily align the axis of the strut mount with the axis of the fitting recess, and the strut mount can be attached to the vehicle body panel. It can be assembled easily and with high accuracy.

Even if the bulging portion is formed on any one of the two side portions of the rubber film, for example, the inner peripheral surface shape of the fitting recess, the outer peripheral surface shape of the outer cylinder, and the bulging portion By appropriately selecting dimensions and the like, the above-described effects can be achieved by pressing both the other side portion and the bulging portion of the rubber film against the inner peripheral surface of the fitting recess.
For example, when the bulging portion is formed only on the upper part of the rubber film on the vehicle body panel side, the inclination angle of the inner peripheral surface of the fitting recess with respect to the axis is smaller than the inclination angle of the outer peripheral surface of the outer cylinder. In addition, when the bulging portion is formed only at the lower portion on the wheel side of the both side portions of the rubber film, the inclination angle of the inner peripheral surface of the fitting recess with respect to the axis is larger than the inclination angle of the outer peripheral surface of the outer cylinder. You may do it.

Moreover, the said bulging part may be intermittently scattered or extended over the perimeter in the circumferential direction of an outer cylinder.
In this case, since the bulging part is intermittently scattered or extended over the entire circumference in the circumferential direction of the outer cylinder, when the above-described force is applied to the strut mount, the corner part of the bulging part It is possible to exert a so-called edge effect that is caught on the inner peripheral surface of the fitting recess, and the displacement of the strut mount relative to the fitting recess can be further reliably suppressed.

Further, the bulging portion is intermittently scattered or extended over the entire circumference in the circumferential direction of the outer cylinder, and the bulging portion is located on the outer peripheral surface of one end portion in the axial direction of the outer cylinder. 1 bulge part and the 2nd bulge part located on the outer peripheral surface of the other end part in the axial direction of an outer cylinder are the side view of this strut mount so that the position along each circumferential direction may mutually differ. You may arrange | position in zigzag form.
In this case, since the bulging portions are arranged in the zigzag shape, the displacement of the strut mount with respect to the fitting recess is further reliably suppressed.
Furthermore, the outer cylinder extends along an inclination direction inclined with respect to the axis of the strut mount in a longitudinal sectional view of the strut mount, and a portion located between the bulging portions in the rubber film is In a longitudinal sectional view, it may be located on the inner side of the bulging portion in a direction orthogonal to the tilt direction.

  According to this invention, the relative displacement between the vehicle body panel and the strut can be suppressed.

Hereinafter, an embodiment of a strut mount according to the present invention will be described with reference to FIGS. 1 to 3.
The strut mount 10 elastically supports a strut disposed between a vehicle body panel 20 and a wheel (not shown) on the vehicle body panel 20. Further, the vehicle body panel 20 is located on the upper side along the vertical direction, and the wheels are located on the lower side. Further, the strut is provided with a shock absorber having a strut rod 31 extending along the vertical direction.

The strut mount 10 includes an outer cylinder 12 having an outer peripheral surface covered with a first rubber film (rubber film) 11, an inner cylinder 13 disposed inside the outer cylinder 12, and the outer cylinder 12 and the inner cylinder 13. And a cylindrical elastic body 14 which is arranged between the two and elastically connects the both 12 and 13.
The strut mount 10 has the inner cylinder 13 attached to the upper end portion 31a of the strut rod 31 and the outer cylinder 12 fitted into a fitting recess 21 formed in the vehicle body panel 20, whereby the strut mount Is elastically supported by the vehicle body panel 20.
Further, in this configuration, the outer cylinder 12, the inner cylinder 13, and the elastic body 14 are arranged coaxially with a common shaft extending along the vertical direction. Hereinafter, this common axis is referred to as an axis O.

The outer cylinder 12 is formed of a metal material, and is formed in an inclined cylinder shape that gradually increases in diameter from the upper side toward the lower side. Note that the thickness of the outer cylinder 12 is the same over the entire area.
The inner cylinder 13 is formed of a metal material, and is formed in an inclined cylinder shape that gradually increases in diameter from the upper side to the lower side so as to be substantially parallel to the outer cylinder 12. In the illustrated example, the inner cylinder 13 includes an upper end portion 13a extending along the axis O direction, a storage portion 13b bulging outward in the radial direction, and a lower end portion 13c extending outward in the radial direction. Are connected in this order from the upper side to the lower side. Note that the thickness of the inner cylinder 13 is the same throughout the entire area.

  The inner cylinder 13 is thicker than the outer cylinder 12. Further, the inner diameter at the upper end portion of the outer cylinder 12 is larger than the outer diameter at the upper end portion 13 a of the inner cylinder 13. Further, in the longitudinal sectional view of the strut mount 10, the length of the outer surface of the outer cylinder 12 extending along the inclination direction K inclined to the axis O is larger than the length of the outer surface of the inner cylinder 13 along the inclination direction K. Is also shorter. And the outer cylinder 12 is facing the accommodating part 13b of the inner cylinder 13 from the outer side in the direction orthogonal to the said inclination direction K in the said longitudinal cross sectional view. Further, the upper end portion 13 a and the lower end portion 13 c of the inner cylinder 13 are located on the outer side in the tilt direction K than the outer cylinder 12.

  The elastic body 14 connects the inner peripheral surface of the outer cylinder 12 and the outer peripheral surface of the storage portion 13 b of the inner cylinder 13. And in the example of illustration, the whole area other than the outer peripheral surface of the part to which the elastic body 14 was connected among each surface of the outer cylinder 12 and the inner cylinder 13, and the outer cylinder 12 coat | covered with the 1st rubber film 11, Covered with a second rubber film 17. Further, the second rubber film 17, the first rubber film 11, and the elastic body 14 are integrally formed.

  Here, a bearing 22 is fitted in the storage portion 13 b of the inner cylinder 13. The bearing 22 is provided with a fitting cylinder 22 a extending downward, and the fitting cylinder 22 a is fitted in an annular bracket 23. A receiving plate 24 formed in a ring shape with a rubber material is disposed on the outer peripheral edge portion of the lower surface of the bracket 23, and the upper end portion of the coil spring 25 is supported on the lower surface of the receiving plate 24.

  Further, the strut rod 31 is disposed coaxially with the axis O on the radially inner side of the coil spring 25. The strut rod 31 is fitted inside the bearing 22 and the fitting cylinder 22a, and its upper end 31a protrudes upward through the inside of the inner cylinder 13. The upper end portion 31a of the strut rod 31 is formed below the upper end portion 31a and has a smaller diameter than the portion fitted inside the bearing 22 and the fitting cylinder 22a, and is a male screw portion. The bearing 22 is fixed to the strut rod 31 by screwing the first nut 26 onto the upper end 31a.

  In the above configuration, in the illustrated example, the strut mount 10 has a vehicle body weight acting from the upper side via the outer cylinder 12 and an upward biasing force by the coil spring 25 from the lower side due to the bracket 23, the bearing 22 and the inner cylinder. By acting through 13, the first rubber film 11 is assembled to the vehicle body panel 20 without being fastened while being pressed against the inner peripheral surface of the fitting recess 21.

  Further, in the present embodiment, a stopper fitting 27 formed in a bottomed cylindrical shape is attached to the upper part of the strut mount 10 coaxially with the axis O. A through hole is formed coaxially with the axis O at the bottom of the stopper fitting 27, and protrudes upward from the inner cylinder 13 and the first nut 26 in the upper end 31 a of the strut rod 31 in the through hole. The part is inserted. Then, the second nut 28 is screwed into a portion of the upper end portion 31a of the strut rod 31 that is located in the stopper fitting 27 through the through hole, whereby the bottom portion of the stopper fitting 27 is connected to the first nut 26 and the second nut 26. The nut 28 is sandwiched and fixed in the vertical direction. In the illustrated example, a flange 27a is provided at the upper end opening of the stopper fitting 27, and a stopper rubber 27b is disposed on the lower surface of the flange 27a.

  Here, the fitting recess 21 formed in the vehicle body panel 20 is arranged coaxially with the axis O and gradually increases in diameter along the outer peripheral surface of the outer cylinder 12 from the upper side to the lower side. An insertion hole 21a is formed on the upper end surface of the fitting recess 21 coaxially with the axis O, and the bottom side of the stopper fitting 27 is inserted into the insertion hole 21a. The stopper rubber 27b of the stopper fitting 27 is opposed to the vehicle body panel upper surface wall 20a constituting the upper end surface of the fitting recess 21 from above.

And in this embodiment, as FIG. 2 and FIG. 3 shows, in the 1st rubber film 11, at least one of the both-sides parts located on the outer peripheral surface of the both ends in the said axis O direction of the outer cylinder 12 In addition, bulging portions 15 and 16 that bulge outward in the radial direction and are thicker than others are formed over the entire circumference. In the illustrated example, the bulging portions 15 and 16 are formed separately on the both side portions of the first rubber film 11.
In addition, these bulging parts 15 and 16 are arrange | positioned at intervals in the said inclination direction K. As shown in FIG. This interval is equal to the size of the bulging portions 15 and 16 in the tilt direction K. Moreover, the said longitudinal cross-sectional view shape of the bulging parts 15 and 16 is hemispherical.

Furthermore, in this embodiment, the bulging parts 15 and 16 are intermittently extended over the perimeter in the circumferential direction of the outer cylinder 12, as FIG. 3 shows. That is, each of the bulging portions 15 and 16 is formed in a rectangular shape that is long in the circumferential direction when viewed from the outside in the radial direction of the strut mount 10, and is formed in a plurality at intervals in the circumferential direction. Of the bulging portions 15 and 16, the first bulging portion 15 located on the outer peripheral surface at the upper end portion of the outer cylinder 12 and the second bulging portion located on the outer peripheral surface at the lower end portion of the outer cylinder 12. 16 are arranged in a staggered manner in the side view so that the positions along the circumferential direction are different from each other.
Further, in the illustrated example, the first bulging portion 15 and the second bulging portion 16 are arranged in the first rubber film 11 so as to avoid positions along the circumferential direction overlapping each other in the inclined direction K. ing. In other words, the two bulging portions 15 and 16 are disposed at positions in the first rubber film 11 that do not overlap each other in the inclined direction K. Further, the bulging portions 15 and 16 are arranged at positions that are point-symmetric with respect to the axis O in the top view of the strut mount 10. Furthermore, these bulging portions 15 and 16 are all the same shape and size.

  As described above, according to the strut mount 10 according to the present embodiment, at least one of the both side portions of the first rubber film 11 bulges outward in the radial direction and is made thicker than others. Since the bulging portions 15 and 16 are formed, when the first rubber film 11 is pressed against the inner peripheral surface of the fitting concave portion 21 and the outer cylinder 12 is fitted into the fitting concave portion 21, the bulging portion Of the surface pressure generated between the first rubber film 11 and the inner peripheral surface of the fitting recess 21 by being crushed, the inner periphery of the bulging portions 15 and 16 and the fitting recess 21 The surface pressure generated between the surfaces, that is, the frictional force is locally increased.

Further, since the bulging portions 15 and 16 are formed over the entire circumference, it is possible to suppress the frictional force from being varied for each portion along the circumferential direction.
As described above, the strut mount 10 has a so-called twisting force that tilts its axis O with respect to the axis of the fitting recess 21, a horizontal force perpendicular to the axis O, or a rotational force around the axis O, and Even if a vertical force along the axis O is applied, the strut mount 10 can be prevented from being displaced with respect to the fitting recess 21.

In addition, since the bulging portions 15 and 16 are formed in the first rubber film 11, even if the dimensional variation or the like occurs in the fitting recess 21 or the strut mount 10, the outer cylinder 12 of the strut mount 10 is fitted into the fitting recess. When the bulging portions 15 and 16 are crushed as described above when they are fitted into the inner space 21, this dimensional variation can be absorbed.
Further, since the bulging portions 15 and 16 are formed on the first rubber film 11 at a portion located on the outer peripheral surface of the outer cylinder 12, the outer cylinder 12 is fitted into the fitting recess 21 as described above. At this time, it is possible to prevent the bulging portions 15 and 16 from being greatly crushed and the entire first rubber film 11 from being pressed against the inner peripheral surface of the fitting recess 21 with the same surface pressure. . That is, it becomes possible to regulate the amount of compressive deformation of the bulging portions 15, 16, and the surface pressure generated between the bulging portions 15, 16 and the inner peripheral surface of the fitting recess 21 can be reliably and locally. Can be increased.

  In the present embodiment, since the bulging portions 15 and 16 are separately formed on the both side portions of the first rubber film 11, the portion where the surface pressure and the frictional force are increased as described above is used as the outer cylinder. It can be reliably generated at two locations along the direction of the twelve axis O. Therefore, when a force in the twisting direction is applied to the strut mount 10, the deflection angle of the strut mount 10 with respect to the fitting recess 21 is suppressed by receiving the force with the two bulging portions 15 and 16 described above. Therefore, it is possible to reliably suppress the strut mount 10 from being displaced in the twisting direction with respect to the fitting recess 21.

  Furthermore, since the bulging portions 15 and 16 are separately formed on the both side portions of the first rubber film 11 as described above, the outer cylinder 12 and the fitting recess 21 gradually move from the upper side to the lower side, respectively. Combined with the expanded diameter, when the strut mount 10 is fitted in the fitting recess 21, the axis O of the strut mount 10 is easily aligned with the axis of the fitting recess 21. Thus, the strut mount 10 can be easily and accurately assembled to the vehicle body panel 20.

Furthermore, since the bulging portions 15 and 16 extend intermittently over the entire circumference in the circumferential direction of the outer cylinder 12, when the above-described force is applied to the strut mount 10, the bulging portion 15, It is possible to exhibit a so-called edge effect in which the 16 corners are hooked on the inner peripheral surface of the fitting recess 21, and the displacement of the strut mount 10 relative to the fitting recess 21 is more reliably suppressed. Can do.
Moreover, since the 1st bulging part 15 and the 2nd bulging part 16 are arrange | positioned in zigzag shape as mentioned above, the displacement with respect to the fitting recessed part 21 of the strut mount 10 is suppressed more reliably.

  Furthermore, in this embodiment, since the bulging portions 15 and 16 are formed at positions that are point-symmetric with respect to the axis O, the strut mount 10 can be assembled to the vehicle body panel 20 more easily and with high accuracy. In addition, the strut mount 10 can be prevented from being easily displaced with respect to the fitting recess 21.

The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.
For example, in the embodiment, the bulging portions 15 and 16 are separately formed on the both side portions of the first rubber film 11, but may be formed only on one of the portions. Even in this configuration, for example, the other side of the first rubber film 11 can be selected by appropriately selecting the inner peripheral surface shape of the fitting recess 21, the outer peripheral surface shape of the outer cylinder 12, the dimensions of the bulging portions 15, 16, and the like. Both the bulging portions 15 and 16 and the bulging portions 15 and 16 can be brought into pressure contact with the inner peripheral surface of the fitting recess 21 to achieve the above-described effects.
For example, when only the first bulging portion 15 is formed in the first rubber film 11, the inclination angle of the inner peripheral surface of the fitting recess 21 with respect to the axis O is made smaller than the inclination angle of the outer peripheral surface of the outer cylinder 12, When only the second bulging portion 16 is formed on the first rubber film 11, the inclination angle of the inner peripheral surface of the fitting recess 21 with respect to the axis O is made larger than the inclination angle of the outer peripheral surface of the outer cylinder 12. May be.

Moreover, although the structure which extended intermittently over the perimeter in the circumferential direction of the outer cylinder 12 was shown as the bulging parts 15 and 16, you may be made to extend continuously over the perimeter, or intermittently. It may be interspersed.
Furthermore, although the 1st bulging part 15 and the 2nd bulging part 16 were arrange | positioned by the said side view so that the position along each circumferential direction might mutually differ, it was along each circumferential direction You may arrange | position so that a position may become the same mutually. Moreover, although the 1st bulging part 15 and the 2nd bulging part 16 are arrange | positioned in the position which does not mutually overlap in the said inclination direction K in the 1st rubber film 11, it arrange | positions in the position which mutually overlaps in the said inclination direction K. Also good.

Furthermore, in the said embodiment, although all the 1st bulging part 15 and the 2nd bulging part 16 were mutually the same shape, the 1st bulging part 15 and the 2nd bulging part 16 were made into a mutually different shape. May be. Further, although the numbers of the first bulging portion 15 and the second bulging portion 16 are equal to each other, they may be made different.
For example, the size of the first bulge portion 15 in the tilt direction K and the size of the second bulge portion 16 in the tilt direction K may be different from each other, or the bulge amount of the first bulge portion 15 may be different. And the bulging amount of the second bulging portion 16 may be different from each other, and further, the circumferential length of the first bulging portion 15 and the circumferential length of the second bulging portion 16 may be different from each other. Also good.

  Further, for example, the first bulging portion 15 is made the same as the embodiment shown in FIGS. 1 to 3, while the second bulging portion 32 is made to be more than the first bulging portion 15 as shown in FIG. 4. The circumference may be shortened and more than the first bulging portion 15 may be formed. In the illustrated example, the number of the second bulging portions 32 is about three times the number of the first bulging portions 15. Further, the first bulging portion 15 and the second bulging portion 32 are also arranged at positions that are point-symmetric with respect to the axis O in the top view of the strut mount 10 as in the above-described embodiment. .

Moreover, in the said embodiment, although the bracket 23 which supports the coil spring 25 from the upper end side was provided, a flange is protruded from the lower end edge of the outer cylinder 12 toward the radial direction outer side without providing this bracket 23. In addition, a coil spring having a diameter larger than that of the coil spring 25 shown in the embodiment may be used, and the large-diameter coil spring may be supported from the upper end side by the lower surface of the flange.
Also in this configuration, the strut mount is assembled without being fastened to the vehicle body panel 20 in a state where the first rubber film 11 is pressed against the inner peripheral surface of the fitting recess 21 as in the above embodiment.

Moreover, in the said embodiment, although the 1st bulging part 15 and the 2nd bulging parts 16 and 32 were formed in the 1st rubber film 11, other bulging parts 15, 16, and 32 between other bulging parts You may form by adding a bulging part.
Furthermore, the longitudinal sectional view shape of the bulging portions 15, 16, and 32 is not limited to the above-described embodiment, and may be appropriately changed, for example, a rectangular shape.

  The relative displacement between the vehicle body panel and the strut can be suppressed.

It is a longitudinal section showing the state where the strut mount shown as one embodiment concerning the present invention was attached to the body panel. It is a longitudinal cross-sectional view of the strut mount shown in FIG. FIG. 3 is a perspective view of the strut mount shown in FIGS. 1 and 2. It is a perspective view of a strut mount shown as other embodiments concerning the present invention.

Explanation of symbols

10 Strut mount 11 First rubber film (rubber film)
12 outer cylinder 13 inner cylinder 14 elastic body 15 first bulging portion 16, 32 second bulging portion 20 body panel 21 fitting recess 31 strut rod 31a upper end portion of strut rod O axis (axis)

Claims (5)

An outer cylinder whose outer peripheral surface is coated with a rubber film, an inner cylinder arranged inside the outer cylinder, and a cylindrical shape which is arranged between the outer cylinder and the inner cylinder and elastically connects the two. An elastic body, and
The inner cylinder is attached to the upper end portion of the vehicle body panel side of the strut rod extending from the wheel side toward the vehicle body panel side, and is formed on the vehicle body panel and gradually increases in diameter as it goes from the vehicle body panel side to the wheel side. A strut mount used by fitting the outer cylinder in a fitting recess having an inner peripheral surface,
The outer peripheral surface of the outer cylinder gradually increases in diameter along the axial direction from the vehicle body panel side toward the wheel side,
In the rubber film, at least one of both side portions located on the outer peripheral surface of both end portions in the axial direction of the outer cylinder bulges outward in the radial direction and has a thickness larger than others , A strut mount, characterized in that a bulging portion that is in contact with an inner peripheral surface of the fitting recess when the outer cylinder is fitted into the fitting recess is formed over the entire circumference. The strut mount according to claim 1,
The swell mount is characterized in that the bulging portion is formed separately on each side portion of the rubber film. The strut mount according to claim 1 or 2,
The swell mount is characterized in that the bulging portion is intermittently scattered or extended over the entire circumference in the circumferential direction of the outer cylinder. The strut mount according to claim 2,
The bulging portion is intermittently scattered or extended over the entire circumference in the circumferential direction of the outer cylinder,
Of the bulging portions, a first bulging portion located on the outer peripheral surface of one end portion in the axial direction of the outer cylinder and a second bulging portion located on the outer peripheral surface of the other end portion in the axial direction of the outer cylinder. The strut mount is arranged in a staggered manner in a side view of the strut mount so that positions along the circumferential direction are different from each other.   The strut mount according to claim 2 or 4,
  The outer cylinder extends along an inclination direction inclined to an axis of the strut mount in a longitudinal sectional view of the strut mount,
  A portion of the rubber film located between the bulging portions is located on the inner side of the bulging portion in a direction perpendicular to the inclined direction in the longitudinal sectional view. mount.

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