JP7157648B2 - suspension device - Google Patents

Description

The present invention relates to suspension devices.

A strut-type damper (suspension device) having a coil spring arranged concentrically around a shock absorber is known (see Patent Document 1). A coil spring is arranged between an upper spring seat and a lower spring seat of the damper. A lower spring seat (spring guide) includes an annular member that supports a coil spring, and a tubular member that extends from the annular member. A tubular member is disposed around the outer tube of the shock absorber. The ends of the tubular member abut support rings welded to the outer tube.

U.S. Patent Application Publication No. 2016/0023529

The suspension device described in Patent Document 1 is used with the spring guide sandwiched between the coil spring and the support ring. Therefore, the spring guide will not come off from the shock absorber cylinder during use of the suspension device.

However, when the suspension device is assembled, in a state in which the spring guide is fitted to the cylinder of the shock absorber and before the coil spring is attached, an external force acts on the spring guide, causing the spring guide to disengage the shock absorber. There is a risk that it will come off. As a result, the efficiency of the assembly work of the suspension device may deteriorate.

SUMMARY OF THE INVENTION It is an object of the present invention to improve the efficiency of assembly work of a suspension device.

The present invention is a suspension device comprising a shock absorber provided between a vehicle body and a wheel, an upper mount attached to the tip of a rod, a spring guide attached to the outer peripheral surface of a cylinder, a spring guide and an upper mount. A coil spring that elastically supports the vehicle body, a bump cap that is attached to the end of the cylinder, and a rod that is attached to the shock absorber. a bump stopper that regulates the side stroke; the spring guide has an insertion hole through which the shock absorber is inserted; A support ring for supporting a spring guide is fixed to the outer periphery of the cylinder, and the spring guide is axially sandwiched between the support ring and the bump cap .

In this invention, the bump cap attached to the end of the cylinder restricts the movement of the spring guide in the axial direction. Therefore, it is possible to prevent the spring guide from coming off from the shock absorber when an external force acts on the spring guide without providing a member for restricting the movement of the spring guide separately from the bump cap.

The present invention is characterized in that the bump cap closes the gap between the cylinder and the insertion hole.

According to the present invention, the bump cap can prevent foreign matter such as sand and water from entering the gap between the cylinder and the insertion hole.

The present invention is characterized in that the restricting portion restricts radial movement of the spring guide.

In this invention, since the restricting portion of the bump cap restricts the radial movement of the spring guide, there is no need to provide a dedicated member for restricting the radial movement of the spring guide.

The present invention is characterized in that at least one of the surface of the restricting portion that abuts the spring guide and the surface of the spring guide that abuts the restricting portion is an inclined surface that is inclined with respect to a plane perpendicular to the axial direction. .

According to the present invention, it is possible to improve the positioning accuracy of the spring guide with respect to the cylinder.

In the present invention, the spring guide has a tubular portion with an inner circumference formed as an insertion hole, the restricting portion is tubular, and the end portion of the restricting portion abuts the end portion of the tubular portion. , the movement of the spring guide in the axial direction is restricted.

In this invention, since the tubular portion of the spring guide and the tubular restricting portion of the bump cap are in contact with each other, the load acting on the tubular portion of the spring guide can be made uniform.

According to the present invention, it is possible to improve the efficiency of the assembly work of the suspension device.

1 is a partial cross-sectional view of a suspension device according to an embodiment of the invention; FIG. 1 is a perspective view of a spring guide according to an embodiment of the invention; FIG. FIG. 4 is an enlarged schematic cross-sectional view showing an enlarged contact portion between the spring guide and the bump cap according to the embodiment of the present invention; It is a figure explaining a mode that an intermediate assembly is conveyed. FIG. 11 is an enlarged schematic cross-sectional view showing an enlarged contact portion between a spring guide and a bump cap according to Modification 1-1 of the embodiment of the present invention; FIG. 11 is an enlarged schematic cross-sectional view showing an enlarged contact portion between a spring guide and a bump cap according to Modification 1-2 of the embodiment of the present invention; FIG. 11 is an enlarged schematic cross-sectional view showing an enlarged contact portion between a spring guide and a bump cap according to Modified Example 1-3 of the embodiment of the present invention; FIG. 11 is an enlarged schematic cross-sectional view showing an enlarged contact portion between a spring guide and a bump cap according to Modification 1-4 of the embodiment of the present invention; FIG. 11 is a schematic plan view of a cylindrical portion of a spring guide according to modification 2-1 of the embodiment of the present invention, viewed from above; FIG. 11 is a schematic plan view of a bump cap according to Modification 2-2 of the embodiment of the present invention as viewed from below;

A suspension device 10 according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a partial cross-sectional view of the suspension device 10. FIG. As shown in FIG. 1, a suspension device 10 is mounted on an automobile (not shown) to position wheels (not shown) and generate damping force to absorb shocks and vibrations received from the road surface while the vehicle is running. It is a device that stably suspends the vehicle body by

The suspension device 10 includes a strut-type shock absorber 1 provided between the vehicle body and the wheels, an upper mount 2 attached to the tip of a piston rod (hereinafter referred to as a rod) 1a of the shock absorber 1, and the shock absorber 1. a spring guide 100 attached to the outer peripheral surface of the cylinder 1b; a coil spring 4 provided between the spring guide 100 and the upper mount 2 for elastically supporting the vehicle body; A bump stopper 5 for restricting the stroke, a bump cap 160 as a cap member fitted to the rod 1a side end of the cylinder 1b, and a dust boot 7 as a cylindrical cover member for protecting the rod 1a. Prepare.

The shock absorber 1 has a cylinder 1b and a cylindrical rod 1a projecting from an opening 142 (see FIG. 3) of the cylinder 1b. The shock absorber 1 is a twin-tube shock absorber, and the cylinder 1b includes a bottomed cylindrical outer tube 11o forming the outer shell of the cylinder 1b and an inner tube 11i (see FIG. 3) provided inside the outer tube 11o. ) and A piston (not shown) that divides the inner tube 11i into an expansion side chamber and a compression side chamber is connected to the lower end of the rod 1a.

The rod 1a is slidably supported by a rod holding portion 145 (see FIG. 3) provided at the open end of the outer tube 11o. The rod holding portion 145 has a layered structure in which a dust seal, an oil seal, a bearing, etc. are layered. The rod holding portion 145 and the inner tube 11i are axially sandwiched between a crimped portion 141 (see FIG. 3) formed by crimping the upper end portion of the outer tube 11o inward and the bottom portion of the outer tube 11o.

As shown in FIG. 1, a bracket 1c for connecting a hub carrier (not shown) holding a wheel and the shock absorber 1 is provided at the end of the cylinder 1b opposite to the rod 1a side. For convenience of explanation, the vertical direction is defined such that the upper mount 2 side is the upper side of the suspension device 10 and the bracket 1c side is the lower side of the suspension device 10 . The vertical direction of the suspension device 10 is the axial direction (central axis direction) of the suspension device 10 and the extension and contraction direction of the shock absorber 1 . Also, the radial direction of the suspension device 10 (the radial direction of the shock absorber 1 ) is perpendicular to the axial direction of the suspension device 10 .

The shock absorber 1 is connected to the vehicle body via the upper mount 2, and is connected to the hub carrier by the bracket 1c, and assembled to the vehicle. The shock absorber 1 configured in this way is configured to generate a damping force when the rod 1a moves in the axial direction (vertical direction in FIG. 1) with respect to the cylinder 1b. The suspension device 10 quickly damps the vibration of the vehicle body by the damping force of the shock absorber 1 .

The coil spring 4 is sandwiched between the upper mount 2 and the spring guide 100 in a compressed state, and urges the shock absorber 1 in the extension direction. A rubber sheet 8 is provided between the upper mount 2 and the coil spring 4 . This prevents the upper mount 2 and the coil spring 4 from coming into direct contact with each other. An arc-shaped rubber sheet 40 is provided between the spring guide 100 and the coil spring 4 . This prevents the spring guide 100 and the coil spring 4 from coming into direct contact with each other.

FIG. 2 is a perspective view of the spring guide 100. FIG. As shown in FIGS. 1 and 2, the spring guide 100 is a dish-shaped resin member fixed to the outer circumference of the cylinder 1b. The spring guide 100 includes a disk-shaped base portion 110 that supports the coil spring 4 , side walls 111 that extend upward (upper mount 2 side) from the outer edge of the base portion 110 , and the base portion 110 as the axis of the suspension device 10 . A through hole 120 which is an opening through which the cylinder 1b of the shock absorber 1 is inserted, and is formed so as to protrude upward and downward from the base portion 110 so as to surround the through hole 120. It has a cylindrical tubular portion 112 and a bottomed cylindrical hub 113 .

The periphery of the hub 113 in the base portion 110 is a mounting area to which the rubber sheet 40 is mounted. The base portion 110 is provided with a position regulating portion (not shown) that regulates the position of the rubber sheet 40 . The rubber sheet 40 is made of an elastic material such as rubber. The rubber sheet 40 is provided with a seating portion 40 a (see FIG. 1 ) whose cross section is curved along the cross-sectional shape of the coil spring 4 . A plurality of through-holes (not shown) are formed in the spring guide 100 in order to reduce the weight of the spring guide 100 and to drain water accumulated in the base portion 110 .

A tubular portion 112 protruding axially from the base portion 110 has an insertion hole 120 having a circular inner periphery. As shown in FIG. 1, the insertion hole 120 is formed so as to be eccentric from the center of the spring guide 100 toward the vehicle body when the spring guide 100 is fixed to the outer circumference of the cylinder 1b.

A support ring 3 made of metal is fixed to the outer circumference of the cylinder 1b by welding. The spring guide 100 is fixed to the outer circumference of the cylinder 1b by fitting the insertion hole 120 to the outer circumference of the cylinder 1b and supporting the lower end of the tubular portion 112 of the spring guide 100 by the support ring 3 .

The fitting between the cylinder 1b and the insertion hole 120, specifically, the fitting between the cylinder 1b and the rib 122 (see FIG. 2) formed in the insertion hole 120 may be a "clearance fit" or " It may be an "interference fit". When the "tight fit" is adopted, there is no looseness between the insertion hole 120 and the cylinder 1b, and noise due to looseness can be prevented. Also, the responsiveness of the operation of the suspension device 10 can be improved.

The spring guide 100 is fitted into the cylinder 1b from above and is attached to the cylinder 1b by coming into contact with the support ring 3 . In other words, the cylinder 1b is inserted from the lower open end 125L of the insertion hole 120 of the spring guide 100. As shown in FIG. That is, the lower open end 125L is an inlet into which the cylinder 1b is inserted, and the upper end of the cylinder 1b protrudes from the upper open end 125U, which is the open end on the opposite side of the lower open end 125L.

As shown in FIG. 2 , the insertion hole 120 is provided with a rib 122 as a projection projecting radially inward from an inner peripheral surface 121 of the insertion hole 120 . The rib 122 functions as a supporting portion that supports the outer peripheral surface of the cylinder 1b of the shock absorber 1. As shown in FIG. Each rib 122 is provided linearly along the axial direction of the insertion hole 120 (that is, the axial direction of the suspension device 10).

The rib 122 is, for example, formed to have a rounded trapezoidal or semicircular cross-sectional shape, and is in line contact with the outer peripheral surface of the cylinder 1b. A plurality of ribs 122 are arranged at equal intervals along the circumferential direction of insertion hole 120 . Therefore, the spring guide 100 is positioned such that the central axis of the insertion hole 120 coincides with the central axis of the cylinder 1b.

The bump stopper 5 is made of an elastic material such as elastic rubber or resin. The bump stopper 5 is attached to the rod 1a, and restricts the contraction-side stroke of the shock absorber 1 by coming into contact with the bump cap 160 when the shock absorber 1 contracts by a predetermined amount. When the shock absorber 1 is most contracted, the bump stopper 5 contacts the bump cap 160 and is elastically deformed, so that the shock at the time of most contraction is alleviated.

FIG. 3 is an enlarged schematic cross-sectional view showing an enlarged contact portion between the spring guide 100 and the bump cap 160. As shown in FIG. As shown in FIGS. 1 and 3, the bump cap 160 is attached to the rod 1a side end (upper end) of the cylinder 1b so as to cover the opening 142 of the outer tube 11o. The bump cap 160 is made of resin.

In addition, in this embodiment, the bump cap 160 is made of a material that is more flexible than the spring guide 100 . The elastic modulus (Young's modulus) of the material of the bump cap 160 is lower than the elastic modulus (Young's modulus) of the material of the spring guide 100 .

The bump cap 160 has a cylindrical fitting portion 161 and an annular annular portion 164 extending radially inward from the upper end portion of the fitting portion 161 .

The upper end of the cylinder 1b is press-fitted into the inner periphery of the fitting portion 161. As shown in FIG. The bump cap 160 is attached to the upper end of the cylinder 1b with the lower end of the fitting portion 161 in contact with the upper end of the cylindrical portion 112 of the spring guide 100. As shown in FIG.

Therefore, the spring guide 100 is axially sandwiched between the support ring 3 (see FIG. 1) and the bump cap 160 . That is, the fitting portion 161 abuts on the upper end portion of the tubular portion 112 of the spring guide 100 and functions as a restricting portion that restricts axial movement of the spring guide 100 with respect to the cylinder 1b.

As shown in FIG. 4, in the process of assembling the suspension device 10, the intermediate assembly 90 in which the spring guide 100 is fitted to the cylinder 1b of the shock absorber 1 is lifted by a lifting tool 91 and transported to a predetermined location. There is The coil spring 4, upper mount 2, bump stopper 5, etc. are not attached to the intermediate assembly 90. As shown in FIG.

The lifting tool 91 supports the base portion 110 of the spring guide 100 so as to lift it from below, and lifts the intermediate assembly 90 . In this embodiment, the upper end of the tubular portion 112 of the spring guide 100 abuts the lower end of the fitting portion 161 of the bump cap 160 . Therefore, even if an upward external force acts on the spring guide 100 from the hanging tool 91, it is possible to prevent the spring guide 100 from coming off the cylinder 1b.

Vehicles are used in various environments. For example, when the vehicle travels in an area with heavy snowfall, the suspension device 10 may come into contact with water containing snow-melting agents. The snow melting agent contains calcium chloride. Therefore, if water containing calcium chloride enters between the outer periphery of the cylinder 1b and the inner periphery of the insertion hole 120, the inner periphery of the insertion hole 120 may deteriorate and be damaged.

In this embodiment, as shown in FIG. 3, the lower end surface of the fitting portion 161 of the bump cap 160 is in contact with the entire circumference of the upper opening edge of the insertion hole 120 (the end surface of the cylindrical portion 112). . The bump cap 160 is in close contact with the upper opening edge of the insertion hole 120 of the spring guide 100 and closes the gap between the outer circumference of the cylinder 1b and the insertion hole 120 .

Therefore, the bump cap 160 can prevent foreign matter such as sand and water from entering the gap between the cylinder 1 b and the insertion hole 120 . Therefore, it is possible to prevent deterioration and damage caused by foreign matter entering the gap between the outer circumference of the cylinder 1b and the inner circumference of the insertion hole 120. FIG.

According to the embodiment described above, the following effects are obtained.

(1) The lower end of the fitting portion 161 of the bump cap 160 contacts the upper end of the cylindrical portion 112 of the spring guide 100, thereby restricting axial movement of the spring guide 100 with respect to the cylinder 1b. According to this configuration, in the assembly work of the suspension device 10, the axial movement of the spring guide 100 can be restricted by the bump cap 160 attached to the upper end portion of the cylinder 1b.

Therefore, it is not necessary to provide a member for restricting the movement of the spring guide 100 separately from the bump cap 160 . That is, it is possible to prevent the spring guide 100 from coming off from the shock absorber 1 when an external force acts on the spring guide 100 without increasing the number of parts. Since it is possible to prevent the spring guide 100 from coming off the shock absorber 1 during the assembly work of the suspension device 10, the efficiency of the assembly work of the suspension device 10 can be improved.

Further, in the assembly work of the suspension device 10, a process of supporting the spring guide 100 by the hanging tool 91, lifting the intermediate assembly 90, and transporting it to a predetermined place can be employed. high degree of freedom.

(2) In this embodiment, the cylindrical portion 112 of the spring guide 100 and the cylindrical fitting portion 161 of the bump cap 160 are in contact with each other. Therefore, when an upward external force acts on the spring guide 100, the load acting on the cylindrical portion 112 of the spring guide 100 can be made uniform in the circumferential direction.

Therefore, as compared with the case where the spring guide 100 and the bump cap 160 are locally brought into contact with each other, it is possible to effectively prevent the spring guide 100 from coming off the cylinder 1b.

The following modifications are also within the scope of the present invention, and it is also possible to combine the configurations shown in the modifications with the configurations described in the above embodiments, or to combine the configurations described in the following different modifications. is.

<Modification 1>
Although the bump cap 160 restricts only the axial movement of the spring guide 100 in the above embodiment, the present invention is not limited to this. Bump caps 260, 360 may restrict radial movement of spring guides 200, 300, as described below.

<Modification 1-1>
As shown in FIG. 5A, a lower end surface 261a of the fitting portion 261 of the bump cap 260 and an upper end surface 212a of the cylindrical portion 212 of the spring guide 200 are inclined with respect to a plane perpendicular to the axial direction of the suspension device 10. As shown in FIG. It may be an inclined surface.

In this modification, the lower end surface 261a of the fitting portion 261 is inclined so that the inner diameter of the fitting portion 261 gradually increases downward. Further, the upper end surface 212a of the tubular portion 212 is inclined such that the outer diameter of the tubular portion 212 gradually decreases upward. That is, the inclined surfaces of the fitting portion 261 and the cylindrical portion 212 that contact each other are inclined downward and radially outward.

The lower end surface 261a of the fitting portion 261 and the upper end surface 212a of the cylindrical portion 212 have the same inclination angle with respect to a plane orthogonal to the axial direction, and the lower end surface 261a and the upper end surface 212a are in surface contact.

That is, in this modified example, the lower end surface 261 a that is the surface of the fitting portion 261 of the bump cap 260 that contacts the spring guide 200 and the upper surface that is the surface of the cylindrical portion 212 of the spring guide 200 that contacts the fitting portion 261 are provided. Both of the end surfaces 212a are inclined surfaces that are inclined with respect to a plane orthogonal to the axial direction. Therefore, in this modification, the bump cap 260 restricts the movement of the spring guide 200 in the axial and radial directions.

A spring guide 200 is fitted to the cylinder 1 b and placed on the support ring 3 . After that, the bump cap 260 is press-fitted to the upper end of the cylinder 1b. At this time, the lower end surface 261a of the fitting portion 261 and the upper end surface 212a of the tubular portion 212 are brought into contact with each other so that the central axis of the insertion hole 120 of the spring guide 200 coincides with the central axis of the cylinder 1b. 200 is moved and properly positioned. That is, according to this modification, it is possible to improve the positioning accuracy of the spring guide 200 with respect to the cylinder 1b.

In this modification, the cylindrical portion 212 of the spring guide 200 is accurately centered by attaching the bump cap 260 to the upper end portion of the cylinder 1b. Therefore, when a load acts on the spring guide 100 from above via the coil spring 4, it is possible to prevent an unbalanced load from acting on the cylindrical portion 212 of the spring guide 200. FIG.

Further, in this modification, since the radial movement of the spring guide 200 is restricted by the fitting portion 261 of the bump cap 260, it is necessary to provide a dedicated member for restricting the radial movement of the spring guide 200. do not have.

<Modification 1-2>
In the modification 1-1, the inclined surfaces of the fitting portion 261 and the cylindrical portion 212 are inclined downward in the radial direction. You may make it incline inward. Even with such a configuration, the spring guide 200 can be accurately positioned with respect to the cylinder 1b by attaching the bump cap 260 to the upper end portion of the cylinder 1b.

<Modification 1-3>
In Modifications 1-1 and 1-2 above, both the fitting portion 261 and the tubular portion 212 are provided with inclined surfaces. Inclined surfaces can also be provided.

As shown in FIG. 6A, in this modification, the lower end surface 261a of the fitting portion 261 of the bump cap 260 is an inclined surface, whereas the upper end surface 312a of the cylindrical portion 312 of the spring guide 300 is convex upward. A curved surface.

<Modification 1-4>
As shown in FIG. 6B, in this modification, the upper end surface 212a of the cylindrical portion 212 of the spring guide 200 is an inclined surface, whereas the lower end surface 361a of the fitting portion 361 of the bump cap 360 is downwardly convex. It is considered to be a curved surface of

In Modifications 1-3 and 1-4, at least one of the fitting portion 261 and the cylindrical portion 212 is provided with an inclined surface, thereby achieving the same effects as those of Modifications 1-1 and 1-2. can be obtained. In addition, in the above modifications 1-1 and 1-2, since the cylindrical portion 212 and the fitting portion 261 are in surface contact, the outer circumference of the cylinder 1b is larger than that in the modifications 1-3 and 1-4. and the inner periphery of the insertion hole 120 can be more effectively prevented from entering foreign matter.

<Modification 2>
In the above embodiment, an example in which the lower end of the fitting portion 161 of the bump cap 160 abuts on the entire periphery of the upper opening edge of the insertion hole 120 (the end surface of the cylindrical portion 112) has been described. It is not limited to this.

<Modification 2-1>
For example, as shown in FIG. 7A, a cylindrical portion 412 of the spring guide 400 is provided with a plurality of protrusions 412b that protrude upward from the upper opening edge of the insertion hole 120, and the protrusions 412b are brought into contact with the bump cap 160. can be

<Modification 2-2>
As shown in FIG. 7B, the bump cap 460 may be provided with a plurality of projecting portions 461b projecting downward from the lower end surface of the fitting portion 161, and the projecting portions 461b may be brought into contact with the tubular portion 112. As shown in FIG. In this case, the protruding portion 461b abuts against the spring guide 100 and functions as a restricting portion that restricts the movement of the spring guide 100 in the axial direction.

<Modification 3>
In the above-described embodiment, an example in which the spring guide 100 is made of resin has been described, but the present invention is not limited to this. For example, the spring guide 100 may be made of metal.

<Modification 4>
The cross-sectional shape of the rib 122 is not limited to the above embodiment. Various shapes can be adopted for the cross-sectional shape of the rib 122 . For example, the cross-sectional shape of rib 122 may be a rounded triangular shape.

The configuration, action, and effects of the embodiment of the present invention configured as described above will be collectively described.

A suspension device 10 has a cylinder 1b and a rod 1a projecting from the cylinder 1b, a shock absorber 1 provided between a vehicle body and a wheel, an upper mount 2 attached to the tip of the rod 1a, and an outer circumference of the cylinder 1b. Spring guides 100, 200, 300, 400 attached to the surface, coil springs 4 provided between the spring guides 100, 200, 300, 400 and the upper mount 2 for elastically supporting the vehicle body, and the end of the cylinder 1b. and the bump caps 160, 260, 360, 460 attached to the rod 1a. The spring guides 100, 200, 300, 400 have insertion holes 120 through which the shock absorbers 1 are inserted, and the bump caps 160, 260, 360, 460 are provided with the spring guides 100. , 200, 300, 400 to restrict axial movement of the spring guides 100, 200, 300, 400 (fitting portions 161, 261, 361, projection 461b).

In this configuration, the axial movement of the spring guides 100, 200, 300, 400 is restricted by the bump caps 160, 260, 360, 460 attached to the ends of the cylinder 1b. Therefore, an external force acts on the spring guides 100, 200, 300, 400 without providing a member for restricting the movement of the spring guides 100, 200, 300, 400 apart from the bump caps 160, 260, 360, 460. In some cases, it is possible to prevent the spring guides 100, 200, 300, 400 from coming off the shock absorber 1. As a result, it is possible to prevent the spring guides 100, 200, 300, 400 from coming off the shock absorber 1 during the assembly work of the suspension device 10, so that the efficiency of the assembly work of the suspension device 10 can be improved.

In suspension device 10 , bump caps 160 , 260 , 360 block the gap between cylinder 1 b and insertion hole 120 .

In this configuration, the bump caps 160 , 260 , 360 can prevent foreign matter such as sand and water from entering the gap between the cylinder 1 b and the insertion hole 120 .

In the suspension device 10, the restricting portions (fitting portions 261, 361) restrict movement of the spring guides 200, 300 in the radial direction.

In this configuration, radial movement of the spring guides 200, 300 is restricted by the restricting portions (fitting portions 261, 361) of the bump caps 260, 360. There is no need to provide a dedicated member for

In the suspension device 10, at least one of a surface of the restricting portion (fitting portion 261) that contacts the spring guides 200 and 300 and a surface of the spring guide 200 that abuts the restricting portion (fitting portion 261 and 361) is a shaft. It is an inclined surface that is inclined with respect to a plane perpendicular to the direction.

With this configuration, it is possible to improve the positioning accuracy of the spring guides 200 and 300 with respect to the cylinder 1b.

In the suspension device 10, the spring guides 100, 200, and 300 have tubular portions 112, 212, and 312 whose inner peripheries are the insertion holes 120, and the restricting portions (fitting portions 161, 261, and 361) are , and the ends of the restricting portions (fitting portions 161, 261, 361) contact the ends of the cylindrical portions 112, 212, 312 to move the spring guides 100, 200, 300 in the axial direction. is regulated.

In this configuration, since the cylindrical portions 112, 212, 312 of the spring guides 100, 200, 300 and the cylindrical restricting portions (fitting portions 161, 261, 361) of the bump caps 160, 260, 360 abut, The loads acting on the cylindrical portions 112, 212, 312 of the spring guides 100, 200, 300 can be made uniform.

Although the embodiments of the present invention have been described above, the above embodiments merely show a part of application examples of the present invention, and the technical scope of the present invention is not limited to the specific configurations of the above embodiments. do not have.

Reference Signs List 1 Shock absorber 1a Rod 1b Cylinder 2 Upper mount 4 Coil spring 5 Bump stopper 10 Suspension device 100,200 , 300, 400 Spring guide 112, 212, 312 Cylinder portion 120 Insertion hole 160, 260, 360, 460 Bump cap 161, 261, 361 Fitting Joining portion (restricting portion), 461b... Protruding portion (restricting portion)

Claims (5)

a shock absorber having a cylinder and a rod projecting from the cylinder and provided between a vehicle body and a wheel;
an upper mount attached to the tip of the rod;
a spring guide attached to the outer peripheral surface of the cylinder;
a coil spring provided between the spring guide and the upper mount for elastically supporting the vehicle body;
a bump cap attached to the end of the cylinder;
a bump stopper that is attached to the rod and that contacts the bump cap when the shock absorber contracts by a predetermined amount to restrict the contraction-side stroke of the shock absorber;
The spring guide has an insertion hole through which the shock absorber is inserted,
The bump cap has a restricting portion that contacts the spring guide and restricts axial movement of the spring guide ,
A support ring that supports the spring guide is fixed to the outer periphery of the cylinder,
The spring guide is axially sandwiched between the support ring and the bump cap.
A suspension device characterized by: The suspension device according to claim 1,
The suspension device, wherein the bump cap closes a gap between the cylinder and the insertion hole. In the suspension device according to claim 1 or claim 2,
The suspension device, wherein the restricting portion restricts movement of the spring guide in a radial direction. In the suspension device according to claim 3,
At least one of a surface of the restricting portion contacting the spring guide and a surface of the spring guide contacting the restricting portion is an inclined surface inclined with respect to a plane perpendicular to the axial direction. suspension device. In the suspension device according to any one of claims 1 to 4,
The spring guide has a tubular portion with an inner circumference serving as the insertion hole,
The regulation part is cylindrical,
A suspension device according to claim 1, wherein an end portion of the restricting portion abuts against an end portion of the tubular portion, thereby restricting movement of the spring guide in an axial direction.

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