JP2012225475A - Vehicle suspension device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle suspension device, which can regulate the displacement of a shock absorber while damply absorbing an excessive input at a bump, and which can prevent the slip-in of a bump stopper to a penetration hole which is penetrated with a piston rod.SOLUTION: The suspension device for the vehicle is a cylindrical member extended in the axial direction so as to cover the circumference of the piston rod 3 of the shock absorber 1, and comprises: the bump stopper 21 arranged at the upper end 2a of a cylinder 2 of the shock absorber 1; a bracket 4 which is fixed to the upper end side of the piston rod 3, and on which an upper protrusion 21c of the bump stopper 21 abuts at the bump of the shock absorber 1; and a bump stopper guide 23 which is arranged between the bump stopper 21 and the upper end 2a of the cylinder 2, attached to the lower end 21b of the bum stopper 21, and prevents deformation to the axial core direction at the side of the lower end 21b of the bump stopper 21.

Description

  The present invention relates to a vehicle suspension apparatus.

  Conventionally, shock absorbers in suspension devices for vehicles such as automobiles have been provided around the piston rod in order to prevent dust from entering the sliding portion of the piston rod that protrudes from the cylinder and is fixed on the vehicle body side at the tip side. A dust cover made of rubber or resin is provided so as to surround.

  In the suspension apparatus as described above, a foamed elastic body such as urethane foam, so-called bump stopper, is provided at a location where the piston rod is fixed to the vehicle body side. The bump stopper limits the displacement of the shock absorber in a buffering manner by contacting the upper end of the cylinder with the lower end side of the bump when the shock absorber is bumped (see, for example, Patent Documents 1 and 2).

JP-A-11-294511 (for example, see paragraphs [0008]-[0010], [FIG. 1], etc.) Japanese Unexamined Patent Application Publication No. 2010-7692 (see, for example, paragraphs [0010]-[0026], [FIG. 1] to [FIG. 6] of the specification)

  However, in the techniques proposed in Patent Documents 1 and 2 described above, an insertion hole and a piston through which a piston rod is inserted when a cylinder comes into contact with a bump of a shock absorber and a bump stopper (bump para bar, bound stopper) is compressed and deformed. There is a risk that the lower end side of the bump stopper will sink into the gap with the rod. When such a phenomenon occurs, the oil seal provided in the insertion hole is damaged, and the sealing performance of the insertion hole is lowered, and oil leakage may occur. Also, since the lower part of the dust cover is open, dust may enter from between the cylinder and the dust cover and accumulate at the upper end of the cylinder. When the phenomenon that the side sinks into the insertion hole occurs, not only the oil seal is damaged, but also dust or the like is pushed into the cylinder from the insertion hole, which may greatly reduce the performance of the shock absorber. In addition, since the upper end of the cylinder and the lower end of the bump stopper are in contact with each other, the impact at the time of bumping is directly input to the cylinder side. The cylinder could be adversely affected.

  From the above, the present invention has been made to solve the above-described problems, and at the time of bumping the shock absorber, the displacement of the shock absorber is regulated while absorbing excessive input in a buffering manner. In addition, an object of the present invention is to provide a vehicle suspension device that can prevent the lower end of the bump stopper from entering the insertion hole through which the piston rod is inserted.

  A vehicle suspension apparatus according to the present invention that solves the above-described problem is a cylindrical member that extends in the axial direction so as to cover the periphery of a piston rod of a shock absorber, and is provided at an upper end portion of the cylinder of the shock absorber. A bump stopper provided; a bracket that is fixed to the upper end side of the piston rod and contacts the upper end portion of the bump stopper when bumping the shock absorber; and is provided between the bump stopper and the upper end portion of the cylinder. In addition, a bump stopper guide is provided which is attached to the lower end portion of the bump stopper and prevents deformation in the axial direction on the lower end portion side of the bump stopper.

  The vehicle suspension apparatus according to the present invention that solves the above-described problems is the vehicle suspension apparatus according to the above-described invention, wherein the bump stopper guide is provided with a hole portion through which the piston rod is inserted. A bottom plate portion and an inner wall portion erected upward from a peripheral edge of the hole portion of the bottom plate portion, and the inner wall portion is a lower end portion of the bump stopper when the bump stopper is mounted on the bump stopper guide. It is comprised so that it may be located inside the inner wall surface of this.

  A vehicle suspension apparatus according to the present invention that solves the above-described problems is a vehicle suspension apparatus according to the above-described invention, and includes a dust cover that is disposed above the bump stopper and covers the periphery of the piston rod. The dust cover has a cylindrical shape with an outer peripheral surface formed in a bellows shape, and a lower end portion of the dust cover is connected to the bump stopper.

  A vehicle suspension apparatus according to the present invention that solves the above-described problems is a vehicle suspension apparatus according to the above-described invention, characterized in that the dust cover and the bump stopper are integrally formed.

  A vehicle suspension apparatus according to the present invention that solves the above-described problems is a vehicle suspension apparatus according to the above-described invention, wherein the bump stopper is disposed at an upper portion thereof, and a lower end portion of the dust cover is disposed in the vicinity of an outer peripheral edge portion. A large-diameter portion to be connected, and a small-diameter portion that is smaller in diameter than the large-diameter portion and extends upward from the upper portion of the large-diameter portion and is brought into contact with the bracket at the time of bumping, The axial length is longer than the axial length of the dust cover in the contracted state.

  A vehicle suspension device according to the present invention that solves the above-described problems is a vehicle suspension device according to the above-described invention, wherein the upper end portion is mounted on the bracket and the lower end portion side is below the bump stopper guide. A cylindrical dust cover is provided that extends and surrounds the outer periphery of the bump stopper, and the outer periphery of the bump stopper has an outer periphery that extends radially outward in the circumferential direction. A side protrusion is provided.

According to the vehicle suspension apparatus of the present invention, the bump stopper provided at the upper end of the cylinder absorbs excessive input at the time of bumping while buffering the shock absorber, and the lower end of the bump stopper by the bump stopper guide. It is possible to reliably prevent the bump stopper from entering the insertion hole through which the piston rod is inserted by suppressing the deformation of the portion.
In addition, since the bump stopper is fixed to the cylinder upper end portion of the shock absorber, the dust intrusion path is further on the vehicle upper side, and the dust intrusion to the cylinder upper end portion can be suppressed.

It is explanatory drawing of the suspension apparatus for vehicles which concerns on 1st Example of this invention. It is explanatory drawing of the bump stopper guide with which the suspension apparatus for vehicles which concerns on 1st Example of this invention is provided, Comprising: The perspective view is shown to Fig.2 (a), and the cross section is shown in FIG.2 (b). It is explanatory drawing of the suspension apparatus for vehicles which concerns on the 2nd Example of this invention. It is explanatory drawing of the suspension apparatus for vehicles which concerns on the 3rd Example of this invention. FIG. 5 is an enlarged view of a surrounding line V in FIG. 4.

  Hereinafter, modes for carrying out a vehicle suspension apparatus according to the present invention will be described in each embodiment.

  A vehicle suspension apparatus according to a first embodiment of the present invention will be described with reference to FIGS. 1 and 2.

  As shown in FIG. 1, the vehicle suspension apparatus according to this embodiment includes a shock absorber 1. The shock absorber 1 includes a cylinder 2 and a piston rod 3 that protrudes upward from an insertion hole 2b provided in an upper end 2a of the cylinder 2. An oil seal (not shown) is provided between the piston rod 3 and the insertion hole 2b. A cylindrical mounting portion 17 is formed at the lower end portion of the cylinder 2.

  The piston rod 3 includes a step portion 3a having a diameter larger than the shaft diameter of the piston rod 3 on the upper end portion side and a screw portion 3b provided above the step portion 3a. On the step portion 3a, the bracket 4 and the lower plate 5 are locked in a welded state. The bracket 4 is formed in a cup shape that opens downward. A collar 7 is externally fitted to the threaded portion 3 b above the step portion 3 a of the piston rod 3, and an elastic bush 8 composed of an upper half portion 8 a and a lower half portion 8 b is attached to the outer peripheral side of the collar 7. The upper plate 6 is locked above the elastic bush 8 in the piston rod 3, and the nut 9 is screwed from above, whereby the elastic bush 8 is fastened by the upper plate 6 and the lower plate 5. Between the upper half 8a and the lower half 8b of the elastic bush 8, an upper spring receiver 10 to which a bush receiving metal fitting 11 is welded is mounted. A rubber sheet 12 is attached to the upper spring receiver 10.

  A bracket 13 to which a lower spring receiver 14 is welded is attached to the upper end 2 a of the cylinder 2. A coil spring 15 is arranged between the rubber sheet 12 mounted on the upper spring receiver 10 and the lower spring receiver 14 described above.

  Below the bracket 4 provided on the piston rod 3, a dust cover 22 and a bump stopper 21 are provided integrally with the upper end portion 2 a of the cylinder 2 so as to cover the periphery of the piston rod 3. The bump stopper 21 and the dust cover 22 are formed of rubber or resin. The bump stopper 21 is a cylindrical member extending in the axial direction of the piston rod 3 and is disposed above the cylinder 2 in a state where the piston rod 3 is inserted. The dust cover 22 has a cylindrical shape extending in the axial direction of the piston rod 21 and is disposed above the bump stopper 21. The dust cover 22 has a peripheral surface formed in a bellows shape and can be contracted in the axial direction. An upper end portion 22 a of the dust cover 22 is disposed in the bracket 4, and a lower end portion 22 b of the dust cover 22 is connected to an outer peripheral edge portion of the upper end portion 21 a of the bump stopper 21. In the vicinity of the central portion of the upper end portion 21a of the bump stopper 21, an upper protrusion portion 21c that protrudes upward is provided. When the shock absorber 1 is fully bumped, the dust cover 22 contracts in the bracket 4, and the bump stopper 21 The upper projection 21 c of 21 is configured to abut on the bracket 4.

  A bump stopper guide 23 is fixed to the upper surface of the bracket 13 at the upper end 2 a of the cylinder 2 via a plate 24. The bracket 13, the plate 24, and the bump stopper guide 23 are fixed to the upper end portion 2a of the cylinder 2 while being joined to each other. A lower end portion 21 b of the bump stopper 21 is attached to the bump stopper guide 23. That is, the bump stopper 21 described above is fixed to the upper end portion 2 a of the cylinder 2 via the bump stopper guide 23.

  The bump stopper guide 23 is a disk-shaped member made of, for example, a steel plate, and as shown in FIGS. 2 (a) and 2 (b), a hole 23e through which the piston rod 3 can be inserted at the center. A bottom plate portion 23a, an inner wall portion 23b standing upward on the periphery of the hole 23e of the bottom plate portion 23a, and an inclined portion extending obliquely outward and upward in the radial direction from the outer periphery of the bottom plate portion 23a. 23c. That is, the bump stopper guide 23 has a circular dish shape as a whole, and has a hole portion 23e and a cylindrical inner wall portion 23b surrounding the hole portion 23e at the center. The height h1 of the inner wall portion 23b is formed higher than the height h2 of the inclined portion 23c. The lower surface of the bump stopper guide 23 is joined to the plate 24 by welding or the like with the piston rod 3 inserted into the hole 23e, and the upper end 2a of the cylinder 2 is fixed. The lower end portion 21b of the bump stopper 21 is mounted on the bump stopper guide 23 having such a shape. The inner wall portion 23b of the bump stopper guide 23 is positioned inside the inner wall surface 21g of the lower end portion 21b of the bump stopper 21 in a state where the bump stopper 21 is mounted, and the outer peripheral surface abuts (contacts) the inner wall surface 21g. It will be in the state. That is, the inner wall portion 23b of the bump stopper guide 23 is fitted inside the inner wall surface 21g of the lower end portion 21b of the bump stopper 21, and the lower end portion 21b of the bump stopper 21 is on the piston rod 3 side (axial center side of the bump stopper 21). It is set as the structure which suppresses deforming to. The shape of the bump stopper guide 23 is such that a portion on the outer peripheral side of the bottom plate portion 23a (a portion corresponding to the inclined portion 23c) extends upward and surrounds the outer periphery of the lower end portion 21b of the bump stopper 21 with a vertical wall. It may be formed in a cup shape. Further, the bump stopper guide 23 is not limited to one made of a steel plate, and may be a member made of resin.

  As a method for mounting the bump stopper 21 to the bump stopper guide 23, for example, a lower protrusion (not shown) is provided at the lower end 21b of the bump stopper 21, and the lower protrusion can be fitted to the bump stopper guide 23. There is a method of providing a proper fitting hole 23d and fitting the lower projection into the fitting hole 23d. Further, the bump stopper can be attached to the bump stopper guide by a method of vulcanizing and bonding the bump stopper 21 to the bump stopper guide 23 or a method of press-fitting the bump stopper 21 into the bump stopper guide 23.

  Since the suspension device according to the present embodiment is configured as described above, for example, when the shock absorber 1 is fully bumped, the bump stopper 21 is moved upward together with the cylinder 2, and the upper protrusion of the bump stopper 21 is moved. The portion 21c contacts the bracket 4 and the bump stopper 21 is compressed and deformed. That is, an impact is input to the cylinder 2 side via the bump stopper 21. Thereby, the upward displacement of the cylinder 2 can be regulated while absorbing excessive input in a buffer manner. Furthermore, the lower end 21b of the bump stopper 21 tends to be deformed to the piston rod 3 side, that is, the axial center side of the bump stopper 21 by the compression by the full bump, but the lower end 21b side is mounted on the bump stopper guide 23. Since the inner wall surface 21g of the lower end portion 21b of the bump stopper 21 is suppressed by the inner wall portion 23b of the bump stopper guide 23, deformation of the bump stopper 21 toward the axial center side is prevented. Thereby, the phenomenon that the lower end portion 21b of the bump stopper 21 sinks into the insertion hole 2b of the cylinder 2 can be reliably prevented.

  In addition, when the shock absorber 1 is fully bumped, the dust cover 22 contracts and is housed in the bracket 4, so that the upper protrusion 21 c of the bump stopper 21 is in the way of contact with the bracket 4. There is no.

  Further, in this embodiment, the bump stopper 21 is arranged on the upper portion of the cylinder 2 and the bump stopper 21 is surrounded by the dust cover 22 so that the intrusion path of dust or the like is as close to the vehicle upper side as possible. Yes. This makes it difficult for dust to enter the inner peripheral side of the dust cover 22 and the bump stopper 21, so that dust and the like can be prevented from collecting in the upper end portion 2 a of the cylinder 2.

  As described above, according to the vehicle suspension apparatus of the present embodiment, the bump stopper 21 is mounted on the upper end portion 2a of the cylinder 2 of the shock absorber 1 via the bump stopper guide 23, so that the shock absorber 1 At the time of full bumping, the upper end portion 21a side of the bump stopper 21 is compressed and deformed to absorb excessive input to the cylinder 2 while buffering the displacement of the cylinder 2, and at the lower end portion 21b side of the bump stopper 21. The compressive deformation is prevented by the bump stopper guide 23, and the bump stopper 21 can be prevented from entering the insertion hole 2b.

  Accordingly, the oil seal is damaged and the sealing performance is deteriorated, and dust collected in the upper end portion 2a of the cylinder 2 is not pushed into the cylinder 2 from the insertion hole 2b of the cylinder 2, so that the shock absorber 1 Factors that degrade the performance can be reliably reduced.

  In the present embodiment, the bump stopper 21 and the dust cover 22 are preferably formed integrally from the viewpoint of cost and the number of parts, but may be separate.

A vehicle suspension apparatus according to a second embodiment of the present invention will be described with reference to FIG.
The vehicle suspension apparatus according to the present embodiment is a modification of the bump stopper, the dust cover, and the bracket of the vehicle suspension apparatus according to the first embodiment described above. The same members as those of the vehicle suspension apparatus according to the embodiment are provided, and the operational effects are also the same. Therefore, only the parts different from the first embodiment will be described here. In this embodiment, the same members as those in the vehicle suspension apparatus according to the first embodiment are denoted by the same reference numerals.

  As shown in FIG. 3, the bump stopper 31 of this embodiment is fixed to the upper end 2 a of the cylinder 2 in a cylindrical shape covering the periphery of the piston rod 3 of the shock absorber 1 like the bump stopper according to the first embodiment. The bump stopper guide 23 is mounted with the lower end 31b. The bump stopper 31 includes a large-diameter portion 31d on the upper side thereof, and a small-diameter portion 31e that has a smaller diameter than the large-diameter portion 31d and extends upward from the large-diameter portion 31d. An upper protrusion 31 c is provided at the upper end of the small diameter portion 31 e, that is, the upper end portion 31 a of the bump stopper 31.

  The bracket 34 locked to the step portion 3a of the piston rod 3 is a plate-like member and includes a flange extending downward on the periphery.

  A cylindrical dust cover 32 is provided between the bracket 34 and the bump stopper 31. The dust cover 32 has a peripheral surface formed in a bellows shape and can be expanded and contracted in the axial direction. The upper end portion 32 a of the dust cover 32 is attached to the bracket 34, and the lower end portion 32 b is connected to the vicinity of the outer peripheral edge portion of the large diameter portion 31 d of the bump stopper 31. That is, the small diameter portion 31e of the bump stopper 31 is disposed inside the dust cover 32. And the part of the axial direction length L1 in the small diameter part 31e is formed longer than the thickness (length in an axial direction) when the dust cover 32 contracts in the axial direction.

  As described above, in the vehicle suspension device of the present embodiment, the piston rod 3 is covered without a gap by connecting the bump stopper 31 and the bracket 4 with the dust cover 32. Thereby, it is possible to block the intrusion path of dust or the like inside the bump stopper 31, that is, the piston rod 3 side.

  Further, at the time of a full bump, the upper protrusion 31c of the bump stopper 31 (small diameter portion 31e) contacts the bracket 34, the bump stopper 31 is compressed and deformed, and at the same time, the dust cover 32 is connected to the large diameter portion 31d of the bump stopper 31 and the bracket 34. Are compressed and contracted on the outer peripheral side of the small diameter portion 31e. At this time, the axial length of the small-diameter portion 31e of the bump stopper 31 is longer than the thickness of the dust cover 32 in the contracted state (length in the axial direction). The thickness can be absorbed. Therefore, input to the dust cover 32 can be suppressed, and the dust cover 32 can be prevented from being deformed or damaged more than necessary.

  As described above, according to the vehicle suspension apparatus of the present embodiment, in addition to the same effects as the vehicle suspension apparatus of the first embodiment described above, the intrusion path for dust and the like is reliably blocked. Therefore, dust and the like accumulated at the upper end of the cylinder 2 can be further suppressed.

  In the present embodiment, the bump stopper 31 and the dust cover 32 are preferably molded integrally from the viewpoint of cost and the number of parts, but may be separate.

A vehicle suspension apparatus according to a third embodiment of the present invention will be described with reference to FIGS.
The vehicle suspension apparatus according to the present embodiment is a modification of the bump stopper, the dust cover, and the bracket of the vehicle suspension apparatus according to the first embodiment described above. The same members as those of the vehicle suspension apparatus according to the embodiment are provided and have the same effects. Therefore, only the parts different from the first embodiment will be described here. In this embodiment, the same members as those in the vehicle suspension apparatus according to the first embodiment are denoted by the same reference numerals.

  As shown in FIGS. 4 and 5, the bump stopper 41 of the present embodiment, like the bump stopper of the first embodiment, has a cylindrical shape covering the periphery of the piston rod 3 of the shock absorber 1 and is formed on the upper end 2 a of the cylinder 2. A lower end 41b is mounted on the fixed bump stopper guide 23 and disposed.

  The bracket 34 latched on the step portion 3a of the piston rod 3 is a plate-like member and includes a flange extending downward on the periphery.

  The dust cover 42 has a cylindrical shape with a peripheral surface formed in a bellows shape, and an upper end portion 42 a is connected to the peripheral edge of the bracket 34. The dust cover 42 extends below the stopper guide 23 so that the lower end 42 b covers the vicinity of the upper end 2 a of the cylinder 2 in a state where the piston rod 3 is extended. That is, the bump stopper 41 is surrounded by the dust cover 42 on the outer peripheral side. In addition, if the dust cover 42 is a cylindrical member, the peripheral surface does not need to be a bellows shape.

  The bump stopper 41 is configured such that an upper protrusion 41c is provided at the upper end 41a, and the upper protrusion 41c contacts the bracket 34 at the time of bumping. On the outer peripheral portion in the vicinity of the lower end portion 41b of the bump stopper 41, an outer peripheral protrusion 41f is provided. The outer peripheral projection 41f extends in the circumferential direction of the outer peripheral portion of the bump stopper 41, extends outward in the radial direction, and is formed in a lip shape having an arc on the upper side. That is, the outer peripheral projection 41f extends toward the inner peripheral surface of the dust cover 42 and is provided so as to close the gap between the bump stopper 41 and the dust cover 42. Thereby, the clearance gap between the bump stopper 41 and the dust cover 42 can be made small. In addition, although it is preferable that the outer peripheral side protrusion part 41f is provided so that the outer periphery (tip side) may not contact | abut with the inner peripheral surface of the dust cover 42, the structure which contact | abuts always may be sufficient. .

  As described above, in the vehicle suspension apparatus according to the present embodiment, the bump that is the entry path of dust or the like is provided in the suspension apparatus in which the dust cover 42 configured to cover the cylinder 2 with the dust cover 42 is provided separately. The gap between the stopper 41 and the dust cover 42 can be reduced. Accordingly, it is possible to reliably suppress dust and the like from entering the piston rod 3 side.

  As described above, according to the vehicle suspension device of the present embodiment, in addition to the same functions and effects as the vehicle suspension device of the first embodiment described above, the bump stopper 41 and the dust cover 42 are provided. Even in a suspension device of a separate type, the entry of dust and the like can be reliably suppressed.

  In this embodiment, the vehicle suspension apparatus including the bump stopper 41 provided with the protrusion 41f on the outer peripheral portion in the vicinity of the lower end portion 41b has been described. However, the protrusion is provided at the lower end of the outer periphery of the bump stopper. It is also possible to provide it not only in the vicinity of the part but also in places other than the lower end part. Moreover, although the suspension apparatus provided with the bump stopper 41 provided with the protrusion 41f at one place has been described, the number of the protrusions is not limited to one, but can be set at two or more places. . Even such a suspension device has the same effects as the vehicle suspension device according to the third embodiment described above.

  The vehicle suspension device according to the present invention regulates the displacement of the shock absorber while buffering excessive input at the time of bumping the shock absorber, and makes the bump stopper go into the insertion hole through which the piston rod is inserted. Since it can prevent, the factor of the performance fall of a shock absorber can be reduced, Therefore In the automobile industry etc., it can utilize extremely beneficially.

DESCRIPTION OF SYMBOLS 1 Shock absorber 2 Cylinder 2b Insertion hole 3 Piston rod 4 Bracket 5 Lower plate 6 Upper plate 7 Collar 8 Elastic bush 9 Nut 10 Upper spring receiver 11 Bush receiving metal 12 Rubber sheet 13 Bracket 14 Lower spring receiver 15 Coil spring 21 Bump stopper 21a Upper end portion 21b Lower end portion 21c Upper projection 22 Dust cover 22a Upper end portion 22b Lower end portion 23 Bump stopper guide 23a Bottom plate portion 23b Inner wall portion 23c Inclined portion 23d Fitting hole 23e Hole portion 24 Plate 31 Bump stopper 31a Upper end portion 31b Lower end portion 31c Upper projection 31d Large diameter 31e Small diameter 32 Dust cover 32a Upper end 32b Lower end 41 Bump stopper 41a Upper end 41b Lower end 41c Upper projection 41f Outer peripheral projection 42 Dust cover 42 The upper end portion 42b lower end

Claims (6)

A cylindrical member extending in the axial direction so as to cover the periphery of the piston rod of the shock absorber, the bump stopper provided at the upper end of the cylinder of the shock absorber;
A bracket fixed to the upper end side of the piston rod and abutted with the upper end of the bump stopper when bumping the shock absorber;
Provided between the bump stopper and the upper end of the cylinder, and provided with a bump stopper guide attached to the lower end of the bump stopper to prevent deformation in the axial direction of the lower end of the bump stopper A suspension device for a vehicle characterized by the above. The vehicle suspension device according to claim 1,
The bump stopper guide includes a bottom plate portion provided with a hole portion through which the piston rod is inserted, and an inner wall portion erected upward from a peripheral edge of the hole portion of the bottom plate portion,
A suspension apparatus for a vehicle, wherein the inner wall portion is positioned inside an inner wall surface of the lower end portion of the bump stopper in a state where the bump stopper is attached to the bump stopper guide. The vehicle suspension device according to claim 1 or 2, wherein
A dust cover that is disposed above the bump stopper and covers the periphery of the piston rod is provided,
The dust cover has a cylindrical shape with an outer peripheral surface formed in a bellows shape, and a lower end portion of the dust cover is connected to the bump stopper. The vehicle suspension device according to claim 3,
The vehicle suspension device, wherein the dust cover and the bump stopper are integrally formed. The vehicle suspension device according to claim 3 or 4, wherein:
The bump stopper has a large-diameter portion where a lower end portion of the dust cover is connected to the vicinity of an outer peripheral edge portion, and a bump smaller than the large-diameter portion and extending upward from the upper portion of the large-diameter portion. A small diameter portion that is sometimes abutted against the bracket,
The vehicle suspension apparatus, wherein the small-diameter portion has an axial length longer than an axial length in a contracted state of the dust cover. The vehicle suspension device according to claim 1 or 2, wherein
The upper end portion is mounted on the bracket and the lower end portion extends below the bump stopper guide, and includes a cylindrical dust cover formed so as to surround the outer periphery of the bump stopper,
The vehicle suspension apparatus according to claim 1, wherein an outer peripheral side protrusion is provided on an outer peripheral portion of the bump stopper so as to extend radially outward in the circumferential direction.

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