JP2020193703A - Spring guide and suspension device - Google Patents

Abstract

To reduce a weight of a spring guide and reduce the number of components of the spring guide.SOLUTION: A spring guide 100A is attached to a shock absorber 1 provided between a vehicle body and a wheel and supports a coil spring 4 which elastically supports the vehicle body. The spring guide 100A includes: a body part 101 made of a resin material; and an elastic part 103A provided between the body part 101 and an end part of the coil spring 4. The elastic part 103A is made of a material having an elastic modulus lower than the material of the body part 101 and integrally formed with the body part 101.SELECTED DRAWING: Figure 1

Description

The present invention relates to a spring guide and a suspension device.

A suspension device including a shock absorber, a coil spring external to the shock absorber, and a spring guide for supporting a lower end portion of the coil spring is known (see Patent Document 1). The spring guide has a metal spring receiving member and a rubber sheet provided between the spring receiving member and the lower end portion of the coil spring.

The rubber sheet is provided with two positioning protrusions for positioning with respect to the spring receiving member. The rubber sheet is attached to the spring receiving member by fitting each protrusion into a positioning hole provided in the spring receiving member.

Japanese Unexamined Patent Publication No. 2012-21825

In the suspension device described in Patent Document 1, the spring receiving member constituting the spring guide and the rubber sheet are separate bodies. Therefore, it is necessary to attach the rubber sheet to the spring receiving member, which is troublesome to assemble. In addition, there is an increasing demand for weight reduction of devices mounted on vehicles such as automobiles. Therefore, there is a demand for weight reduction of the spring guide.

The present invention has been made in view of the above problems, and an object of the present invention is to reduce the weight of the spring guide and the number of parts of the spring guide.

The present invention is a spring guide that is attached to a shock absorber provided between a vehicle body and a wheel and supports a coil spring that elastically supports the vehicle body, and is a main body made of a resin material and an end of the main body and the coil spring. It has an elastic portion provided between the portions, and the elastic portion is made of a material having a lower elastic modulus than the material of the main body portion, and is integrally molded with the main body portion.

In the present invention, since the main body of the spring guide is made of a resin material, the weight can be reduced as compared with the case where the main body is made of a metal material. Further, since the elastic portion is integrally molded with the main body portion, the number of parts can be reduced as compared with the case where the main body portion and the elastic portion are separate parts.

The present invention has a disc-shaped base portion having a mounting region on which a coil spring is mounted, and a side wall extending upward from the radial outer end portion of the base portion. The first elastic sheet portion in which the elastic portion is integrally molded with the mounting region in the base portion, and the second elastic sheet portion integrally molded in the radial outer region and the side wall of the mounting region in the base portion. It is characterized by having.

In the present invention, the second elastic sheet portion is integrally molded in the radial outer region and the side wall of the mounting region in the base portion. Therefore, even if the coil spring breaks and a part of the broken coil spring falls on the base portion and the side wall, the second elastic seat portion can absorb the impact from the broken portion of the coil spring, so that the spring Damage to the base and side walls of the guide can be effectively prevented.

The present invention is characterized in that the thickness of the first elastic sheet portion is thicker than the thickness of the second elastic sheet portion.

In the present invention, the force acting on the coil spring from the road surface can be sufficiently absorbed by the first elastic seat portion in a state where the coil spring is not broken and the vehicle body is normally elastically supported.

The present invention is characterized in that the thickness of the second elastic sheet portion is thicker than the thickness of the first elastic sheet portion.

The present invention is characterized in that the second elastic sheet portion is made of a material having a higher elastic modulus than the material of the first elastic sheet portion.

In these inventions, when a part of the broken coil spring falls on the base portion and the side wall, it is possible to more effectively prevent the base portion and the side wall from being damaged.

In the present invention, the main body is provided so as to project from the base portion inside the coil spring and the disc-shaped base portion on which the lower end portion of the coil spring is placed, and defines the position of the lower end portion of the coil spring. It is characterized by having a first elastic sheet portion integrally molded with the base portion and a third elastic sheet portion integrally molded with the position defining portion. ..

In the present invention, the third elastic sheet portion is integrally molded with the positioning portion provided inside the coil spring. Therefore, even if the coil spring breaks and a part of the broken coil spring falls to the position defining portion, the impact from the broken portion of the coil spring can be absorbed by the third elastic seat portion, so that the spring guide It is possible to effectively prevent damage to the positioning portion of the.

In the present invention, the main body portion has a cylindrical tubular portion through which the cylinder of the shock absorber is inserted, and the third elastic sheet portion is between the cylinder and the insertion hole of the cylinder portion through which the cylinder is inserted. It is characterized by closing the gap.

In the present invention, the third elastic sheet portion 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 third elastic sheet portion has a lip that comes into contact with the cylinder of the shock absorber and closes the gap between the cylinder and the insertion hole.

In the present invention, when the cylinder is inserted into the insertion hole, it becomes difficult to apply a force to the third elastic sheet portion in the insertion direction of the cylinder. As a result, peeling between the third elastic sheet portion and the positioning portion can be suppressed.

The present invention is characterized in that the thickness of the third elastic sheet portion is thinner than the thickness of the first elastic sheet portion.

In the present invention, it is possible to reduce the frictional resistance between the third elastic seat portion and the outer peripheral portion of the cylinder when the spring guide is mounted on the cylinder. As a result, the workability of mounting the spring guide on the shock absorber can be improved.

The present invention is characterized in that the third elastic sheet portion is made of a material having a lower elastic modulus than the material of the first elastic sheet portion.

In the present invention, even if the spring guide is displaced in the axial direction with respect to the cylinder during the operation of the shock absorber, the third elastic seat portion is appropriately made to follow the outer circumference of the cylinder, and the space between the cylinder and the insertion hole is formed. It can be closed by the third elastic sheet portion.

The present invention is a suspension device, wherein the spring guide, the shock absorber, the upper mount attached to the tip of the rod of the shock absorber, the coil spring provided between the spring guide and the upper mount, and the shock absorber. It is characterized by including a metal support portion fixed to a cylinder and supporting a spring guide.

In the present invention, since the spring guide is provided, it is possible to provide a suspension device in which the weight is reduced without increasing the number of parts.

According to the present invention, the weight of the spring guide can be reduced and the number of parts of the spring guide can be reduced.

It is a partial cross-sectional view of the suspension device which concerns on 1st Embodiment of this invention. It is a perspective view of the spring guide which concerns on 1st Embodiment of this invention. It is a plane schematic view which looked at the spring guide which concerns on 1st Embodiment of this invention from above, the shape is simplified, and the formation region of an elastic part is schematically shown by hatching. It is a side sectional view of the spring guide which concerns on 1st Embodiment of this invention. It is a plane schematic view which looked at the spring guide which concerns on the modification of 1st Embodiment of this invention from above, the shape is simplified, and the formation region of an elastic part is schematically shown by hatching. It is a side sectional view of the spring guide which concerns on the modification of 1st Embodiment of this invention. It is a plane schematic view which looked at the spring guide which concerns on 2nd Embodiment of this invention from above, the shape is simplified, and the formation region of an elastic part is schematically shown by hatching. It is a side sectional view of the spring guide which concerns on 2nd Embodiment of this invention. It is a plane schematic view which looked at the spring guide which concerns on the modification of 2nd Embodiment of this invention from above, the shape is simplified, and the formation region of an elastic part is schematically shown by hatching. It is a side sectional view of the spring guide which concerns on the modification of 2nd Embodiment of this invention. It is a plane schematic view which looked at the spring guide which concerns on 3rd Embodiment of this invention from above, the shape is simplified, and the formation region of an elastic part is schematically shown by hatching. It is a side sectional view of the spring guide which concerns on 3rd Embodiment of this invention. It is a plane schematic view which looked at the spring guide which concerns on the modification of 3rd Embodiment of this invention from above, the shape is simplified, and the formation region of an elastic part is schematically shown by hatching. It is a side sectional view of the spring guide which concerns on the modification of 3rd Embodiment of this invention. It is a plane schematic view which looked at the spring guide which concerns on 4th Embodiment of this invention from above, the shape is simplified, and the formation region of an elastic part is schematically shown by hatching. It is a side sectional view of the spring guide which concerns on 4th Embodiment of this invention. It is a plane schematic view which looked at the spring guide which concerns on the modification of 4th Embodiment of this invention from above, the shape is simplified, and the formation region of an elastic part is schematically shown by hatching. It is a side sectional view of the spring guide which concerns on the modification of 4th Embodiment of this invention. It is a plane schematic view which looked at the spring guide which concerns on modification 1 of this Embodiment from above, the shape is simplified, and the formation region of an elastic part is schematically shown by hatching. It is a side sectional view of the spring guide which concerns on the modification 1 of this embodiment. It is a plan view of the spring guide which concerns on the modification 2 of this embodiment seen from above, the shape is simplified, and the formation region of an elastic part is schematically shown by hatching. It is a side sectional view of the spring guide which concerns on the modification 2 of this embodiment. It is a side sectional view of the spring guide which concerns on the modification 3 of this embodiment. It is a partial cross-sectional view near the lip of the spring guide which concerns on the modification 5 of this embodiment.

The suspension device 10 according to the embodiment of the present invention will be described with reference to the drawings. The suspension device 10 is attached to an automobile (not shown), positions wheels (not shown), generates damping force, absorbs shocks and vibrations received from the road surface while the vehicle is running, and stabilizes the vehicle body. It is a suspension device.

<First Embodiment>
The suspension device 10 according to the first embodiment of the present invention will be described with reference to FIGS. 1, 2, 3A and 3B. FIG. 1 is a partial cross-sectional view of the suspension device 10. As shown in FIG. 1, the suspension device 10 includes a 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. The spring guide 100A attached to the outer periphery of the cylinder 1b of the shock absorber 1, the coil spring 4 provided between the spring guide 100A and the upper mount 2 to elastically support the vehicle body, and the shock absorber 1 fitted to the rod 1a. It includes a bump cushion 5 that regulates a stroke on the contraction side, a bump stopper 6 that is fitted to the end of the cylinder 1b on the rod 1a side, and a tubular dust boot 7 that protects the rod 1a.

The shock absorber 1 has a cylinder 1b and a columnar rod 1a protruding from an opening of the cylinder 1b. The shock absorber 1 is a double-cylinder type shock absorber, and the cylinder 1b includes a bottomed cylindrical outer tube forming an outer shell of the cylinder 1b and an inner tube (not shown) provided inside the outer tube. Have. A piston (not shown) that divides the inside of the inner tube (not shown) into an extension side chamber and a compression side chamber is connected to the lower end portion of the rod 1a.

A knuckle bracket 1c for connecting a knuckle (not shown) for holding a wheel and a shock absorber 1 is provided at an end of the cylinder 1b opposite to the rod 1a side. For convenience of explanation, the upper mount 2 side is defined as the upper side of the suspension device 10, and the knuckle bracket 1c side is defined as the lower side of the suspension device 10 so as to be shown in the vertical direction. The vertical direction of the suspension device 10 is the axial direction (central axial direction) of the suspension device 10 and the expansion / contraction direction of the shock absorber 1. Further, the radial direction of the suspension device 10 (the radial direction of the shock absorber 1) is orthogonal 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 knuckle by the knuckle 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 provided between the spring guide 100A and the upper mount 2. The coil spring 4 is sandwiched by the spring guide 100A and the upper mount 2 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 upper end of the coil spring 4. As a result, the upper mount 2 and the coil spring 4 do not come into direct contact with each other. An elastic portion 103A, which will be described later, is provided between the main body portion 101 of the spring guide 100A and the lower end portion of the coil spring 4. As a result, the main body 101 of the spring guide 100A and the coil spring 4 do not come into direct contact with each other.

FIG. 2 is a perspective view of the spring guide 100A. As shown in FIGS. 1 and 2, the spring guide 100A is a member attached to the outer periphery of the cylinder 1b and supporting the coil spring 4 from below. The spring guide 100A has a main body 101 made of a resin material and an elastic portion 103A integrally molded on the upper surface of the main body 101.

The main body 101 of the spring guide 100A has a disc-shaped base 110 on which the lower end of the coil spring 4 is placed, and a cylindrical tubular portion 112 formed so as to project upward and downward from the base 110. A side wall 111 extending diagonally upward from the radial outer end of the base portion 110, and a hub 113 provided on the outer peripheral side of the tubular portion 112 are provided. The side wall 111 has an annular shape and is inclined so that the inner diameter increases toward the upper side from the base portion 110.

As shown in FIG. 2, the base portion 110 has a mounting area 110c set around the hub 113 of the spring guide 100A. The mounting area 110c is an arc-shaped area on which the lower end of the coil spring 4 is mounted. The range of the mounting area 110c is set at an arbitrary angle of 180 degrees or more.

The tubular portion 112 has an insertion hole 120 that penetrates the suspension device 10 in the axial direction (vertical direction) and into which the cylinder 1b of the shock absorber 1 is inserted. As shown in FIG. 1, the insertion hole 120 is formed at a position eccentric from the center of the spring guide 100A toward the vehicle body when the spring guide 100A is attached to the outer periphery of the cylinder 1b.

As shown in FIG. 2, the insertion hole 120 is provided with a rib 122 as a convex portion that protrudes inward in the radial direction from the inner peripheral surface 121 thereof. The rib 122 functions as a support portion that supports the outer peripheral surface of the cylinder 1b of the shock absorber 1. 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 formed, for example, so that its cross-sectional shape has a rounded trapezoidal shape or a semicircular shape, and linearly contacts the outer peripheral surface of the cylinder 1b. A plurality of ribs 122 are arranged at equal intervals along the circumferential direction of the insertion hole 120. Therefore, the spring guide 100A is positioned so that the central axis of the insertion hole 120 coincides with the central axis of the cylinder 1b.

The fitting of the cylinder 1b and the insertion hole 120, specifically, the fitting of the cylinder 1b and the rib 122 (see FIG. 2) formed in the insertion hole 120 may be a "gap fit" or "gap fit". It may be a "cylinder fit". When the "tightening fit" is adopted, the backlash between the insertion hole 120 and the cylinder 1b is eliminated, and the generation of abnormal noise due to the backlash can be prevented. It is also possible to improve the responsiveness of the operation of the suspension device 10.

As shown in FIG. 1, a metal support ring 3 is fixed to the outer peripheral surface of the cylinder 1b by welding. The support ring 3 is a support portion that supports the spring guide 100A. The cylinder 1b may be expanded to form a support portion without providing the support ring 3. The spring guide 100A is attached 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 cylinder portion 112 of the spring guide 100A by the support ring 3.

The spring guide 100A is fitted into the cylinder 1b from above and abuts on the support ring 3 to be attached to the cylinder 1b. In other words, the cylinder 1b is inserted from the lower opening end 125L of the insertion hole 120 of the spring guide 100A. That is, the lower opening end 125L is an inlet into which the cylinder 1b is inserted, and the upper end portion of the cylinder 1b protrudes from the upper opening end 125U, which is the opening end opposite to the lower opening end 125L.

The hub 113 is provided inside the coil spring 4 so as to project upward from the base portion 110. The hub 113 has a bottomed cylindrical shape, the upper portion 113b is the bottom portion, and the hub 113 has an opening at the lower portion. A plurality of ribs are provided inside the tubular portion 113c of the hub 113 in order to improve the rigidity of the hub 113. The outer circumference of the tubular portion 113c of the hub 113 abuts on the inner circumference of the lower end portion of the coil spring 4 to define the radial position of the coil spring 4. That is, the hub 113 functions as a position defining portion that defines the position of the lower end portion of the coil spring 4. Since the lower end portion of the coil spring 4 is held by the hub 113, the coil spring 4 is prevented from tilting (tilting).

The elastic portion 103A is made of a material having a lower elastic modulus than the resin material of the main body portion 101, and is integrally molded with the resin main body portion 101. As the material of the elastic portion 103A, a thermoplastic elastomer such as a polyester elastomer, a polyurethane elastomer, a polyolefin elastomer, or a silicone elastomer is adopted. The material of the elastic portion 103A is not limited to the thermoplastic elastomer, and a thermosetting elastomer such as urethane rubber, silicone rubber, or fluororubber may be used. At least, the material of the elastic portion 103A may be any material having a lower elastic modulus than the resin material of the main body portion 101, and the resin material may be adopted without being limited to the elastomer.

The elastic portion 103A is integrally molded with the main body portion 101 by, for example, a two-color molding method. The material of the main body 101 and the material of the elastic portion 103A can be selected from various materials, but the material of the main body 101 and the material of the elastic portion 103A are selected in consideration of the combination of the materials having a high bonding force. Is preferable.

The spring guide described in Patent Document 1 has a configuration in which when the rubber sheet is attached to the spring receiving member, the protrusion of the rubber sheet is fitted into the hole of the spring receiving member for positioning. That is, in the spring guide described in Patent Document 1, it is necessary to form unevenness on the spring receiving member for mounting the rubber sheet. The unevenness formed on the spring receiving member may cause a bias in the stress acting on the spring receiving member.

On the other hand, in the present embodiment, since the elastic portion 103A is integrally molded with the main body portion 101, the number of irregularities on the main body portion 101 can be reduced as compared with the conventional case. As a result, the bias of the stress acting on the main body 101 can be prevented. Further, since the mounting work that occurs when the elastic portion 103A is molded separately from the main body portion 101 can be omitted, the assembly workability of the suspension device 10 can be improved.

The region where the elastic portion 103A is formed will be described with reference to FIGS. 3A and 3B. FIG. 3A is a schematic plan view of the spring guide 100A viewed from above, the shape thereof is simplified, and the formed region of the elastic portion 103A is schematically shown by hatching. FIG. 3B is a side sectional view of the spring guide 100A.

As shown in FIGS. 3A and 3B, the elastic portion 103A is formed so as to cover the entire upper surface of the base portion 110 including the mounting region 110c and the entire upper surface (inner side surface) of the side wall 111. The elastic portion 103A is formed so that its thickness is uniform.

In the present embodiment, the elastic portion 103A is formed in the mounting region 110c. Further, in the present embodiment, the elastic portion 103A is formed not only on the mounting region 110c but also on the entire upper surface of the base portion 110 and the entire upper surface (inner side surface) of the side wall 111 excluding the mounting region 110c.

In other words, the elastic portion 103A is the first elastic sheet portion 131A integrally molded into the annular region including the mounting region 110c in the base portion 110, and the region outside the radial side of the mounting region 110c in the base portion 110. It also has a second elastic sheet portion 132A integrally molded with the side wall 111.

Since the first elastic sheet portion 131A is integrally molded in the mounting region 110c, it is possible to prevent the lower end portion of the coil spring 4 from directly contacting the main body portion 101. Therefore, when the suspension device 10 repeatedly compresses and expands, the lower end portion of the coil spring 4 prevents the main body 101 from being worn, and the life of the spring guide 100A can be improved. Further, when the lower end portion of the coil spring 4 is directly supported by the main body portion 101, an abnormal noise may be generated between the lower end portion of the coil spring 4 and the main body portion 101. On the other hand, in the present embodiment, since the first elastic sheet portion 131A is provided between the lower end portion of the coil spring 4 and the main body portion 101 of the spring guide 100A, the generation of abnormal noise is suppressed. Can be done.

Further, the second elastic sheet portion 132A is integrally molded in the radial outer region of the mounting region 110c in the base portion 110 and the side wall 111. Therefore, when the coil spring 4 is broken (broken), the broken portion of the coil spring 4 (for example, the broken portion of the fragment scattered when the coil spring 4 is broken and the broken portion of the coil spring 4 are broken so as to be separated into upper and lower parts. Even if the broken portion at the lower end of the upper coil spring 4) falls on the upper surfaces of the base portion 110 and the side wall 111, the second elastic sheet portion 132A in the elastic portion 103A absorbs the impact from the broken portion. Can be done. As a result, the load acting on the main body 101 of the spring guide 100A is dispersed. As a result, damage to the base portion 110 and the side wall 111 of the spring guide 100A can be effectively prevented.

The entire upper surface of the base portion 110 of the spring guide 100A and the entire upper surface (inner side surface) of the side wall 111 are covered with the elastic portion 103A. As a result, it is possible to prevent damage to the main body 101 due to a collision such as a stepping stone whose collision position is difficult to predict.

According to the above-described embodiment, the following effects are exhibited.

In the present embodiment, since the main body 101 of the spring guide 100A is made of a resin material, the weight can be reduced as compared with the case where the main body 101 is made of a metal material. Further, the elastic portion 103A is integrally molded with the main body portion 101, and the spring guide 100A is configured as one component. Therefore, the number of parts of the spring guide 100A can be reduced as compared with the case where the main body 101 and the elastic portion 103A are individually formed as separate parts and the elastic portion 103A is mounted on the main body 101 by fitting or the like. That is, according to the present embodiment, the weight of the spring guide 100A can be reduced and the number of parts of the spring guide 100A can be reduced.

As a result, it is possible to provide the suspension device 10 in which the weight is reduced without increasing the number of parts.

<Modified example of the first embodiment>
In the first embodiment, the base portion 110 extends outward in the radial direction of the mounting region 110c, and the side wall 111 extends diagonally upward from the radial outer end portion thereof (FIGS. 2 and 3B). Although the above has been described, the present invention is not limited thereto. The side wall 111 can be omitted.

As shown in FIGS. 4A and 4B, the spring guide 200A according to the present modification has a circular base portion 210 in which the main body portion 201 has a width (diameter direction dimension) slightly wider than the mounting area 110c. .. The main body 201 does not have the side wall 111 (see FIG. 3B) described in the first embodiment at the radial outer end of the base 210. In this modification, the elastic portion 203A is formed so as to cover the entire upper surface of the base portion 210 including the mounting region 110c.

According to this modification, the number of parts of the spring guide 200A can be reduced as in the first embodiment. In addition, the weight of the spring guide 200A can be reduced as compared with the first embodiment.

<Second Embodiment>
The spring guide 100B according to the second embodiment of the present invention will be described with reference to FIGS. 5A and 5B. Hereinafter, the points different from those of the first embodiment will be mainly described, and in the drawings, the same configurations as those described in the first embodiment or the corresponding configurations are designated by the same reference numerals and the description thereof will be omitted. ..

In the first embodiment, the elastic portion 103A is integrally molded with the base portion 110 and the side wall 111 (see FIGS. 3A and 3B). On the other hand, in the second embodiment, the elastic portion 103B is integrally molded not only with the base portion 110 and the side wall 111 but also with the hub 113 and the tubular portion 112. A circular through hole 135B is formed in the elastic portion 103B, and the cylinder 1b is inserted through the through hole 135B.

The elastic portion 103B is formed so as to cover the entire upper surface of the hub 113 and the entire upper end surface of the tubular portion 112. As described above, in the second embodiment, the elastic portion 103B has the first elastic sheet portion 131B integrally molded with the mounting region 110c in the base portion 110 and the radial outer side of the mounting region 110c in the base portion 110. It has a second elastic sheet portion 132B integrally molded with the region and the side wall 111, and a third elastic sheet portion 133B integrally molded with the hub 113 and the tubular portion 112.

Vehicles are used in a variety of environments. For example, when the vehicle travels in an area with a lot of snowfall, the suspension device 10 may come into contact with water containing a snow melting agent. The snow melting agent contains calcium chloride. Therefore, if water containing calcium chloride invades between the outer circumference of the cylinder 1b and the inner circumference of the insertion hole 120, the inner circumference of the insertion hole 120 may be deteriorated and damaged.

The through hole 135B formed in the third elastic sheet portion 133B in the elastic portion 103B is formed so that the inner peripheral portion thereof abuts on the outer periphery of the cylinder 1b over the entire circumference. The third elastic sheet portion 133B in the elastic portion 103B closes the gap between the cylinder 1b and the insertion hole 120 of the cylinder portion 112 through which the cylinder 1b is inserted. Therefore, the third elastic sheet portion 133B in the elastic portion 103B can prevent foreign matter such as sand and water from entering the gap between the cylinder 1b and the insertion hole 120. As a result, 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 can be prevented.

According to such a second embodiment, in addition to the same effects as those of the first embodiment, the following effects are exhibited.

The third elastic sheet portion 133B is integrally molded with the hub 113 and the tubular portion 112 provided inside the coil spring 4. Therefore, even if the coil spring 4 is broken (broken) and a part of the broken coil spring 4 falls on the upper surfaces of the hub 113 and the tubular portion 112, the coil spring 4 is caused by the third elastic seat portion 133B of the elastic portion 103B. It is possible to absorb the impact from the broken part of. As a result, the load acting on the main body 101 of the spring guide 100B is dispersed. As a result, damage to the hub 113 and the tubular portion 112 can be prevented.

Further, the third elastic sheet portion 133B of the elastic portion 103B prevents foreign matter such as sand and water from entering the gap between the cylinder 1b and the insertion hole 120, thereby preventing deterioration and damage of the cylinder 1b. Can be prevented.

The third elastic sheet portion 133B of the elastic portion 103B also covers the entire outer peripheral surface of the tubular portion 113c of the hub 113 between the upper portion 113b of the hub 113 and the base portion 110. As a result, it is possible to prevent the lower end portion of the coil spring 4 from wearing the outer peripheral surface of the tubular portion 113c of the hub 113.

<Modified example of the second embodiment>
In the second embodiment, the spring guide 100B (see FIG. 5B) in which the base portion 110 extends outward in the radial direction of the mounting region 110c and the side wall 111 extends diagonally upward from the radial outer end portion thereof. As described above, the present invention is not limited to this. The side wall 111 can be omitted.

As shown in FIGS. 6A and 6B, the spring guide 200B according to the present modification is the same as the second embodiment with respect to the main body 201 (see FIG. 4B) described in the modification of the first embodiment. , The elastic portion 203B is integrally molded with the hub 113 and the tubular portion 112.

<Third Embodiment>
The spring guide 100C according to the third embodiment of the present invention will be described with reference to FIGS. 7A and 7B. Hereinafter, the points different from those of the second embodiment will be mainly described, and in the drawings, the same configurations as those described in the second embodiment or the corresponding configurations are designated by the same reference numerals and the description thereof will be omitted. ..

In the second embodiment, the thickness of the elastic portion 103B was uniform. On the other hand, in the third embodiment, the thickness of the elastic portion 103C is not uniform.

When the coil spring 4 is broken, a part of the broken coil spring 4 often falls to the radial outer region of the mounting region 110c rather than the radial inner region of the mounting region 110c. Further, when a part of the broken coil spring 4 falls on the spring guide 100C, when the sharp portion of the broken portion of the coil spring 4 comes into contact with the spring guide 100C, an excessive impact force acts locally. In some cases.

Therefore, in the present embodiment, the thickness t2 of the second elastic sheet portion 132C formed in the radial outer region of the mounting region 110c is the thickness t1 of the first elastic sheet portion 131C formed in the mounting region 110c. Thicker (t2> t1). As a result, the impact from the fractured portion of the coil spring 4 can be more appropriately absorbed by the second elastic sheet portion 132C.

A through hole 135C through which the cylinder 1b is inserted is formed in the third elastic sheet portion 133C, and the inner peripheral portion (diameter inner end portion) thereof abuts on the cylinder 1b. Therefore, if the thickness of the third elastic sheet portion 133C is too thick, when the spring guide 100C is mounted on the cylinder 1b, the spring guide 100C is mounted due to the frictional resistance between the inner peripheral portion of the through hole 135C and the outer peripheral portion of the cylinder 1b. May take time and effort.

In the third embodiment, the thickness t3 of the third elastic sheet portion 133C formed on the hub 113 is thinner than the thickness t1 of the first elastic sheet portion 131C (t3 <t1). As a result, the frictional resistance between the inner peripheral portion of the through hole 135C of the third elastic sheet portion 133C and the outer peripheral portion of the cylinder 1b when the spring guide 100C is mounted on the cylinder 1b can be reduced. As a result, the workability of mounting the spring guide 100C on the shock absorber 1 can be improved.

According to such a third embodiment, the same effect as that of the first embodiment is obtained. Further, the impact force from the fractured portion of the coil spring 4 with respect to the radial outer region of the mounting region 110c can be more effectively absorbed, and the workability of mounting the spring guide 100C on the shock absorber 1 is improved. be able to.

<Modified example of the third embodiment>
In the third embodiment, the spring guide 100C (see FIG. 7B) in which the base portion 110 extends outward in the radial direction of the mounting region 110c and the side wall 111 extends diagonally upward from the radial outer end portion thereof. As described above, the present invention is not limited to this. The side wall 111 can be omitted.

As shown in FIGS. 8A and 8B, the spring guide 200C according to the present modification is the same as the third embodiment with respect to the main body 201 (see FIG. 4B) described in the modification of the first embodiment. , The elastic portion 203C having a different thickness depending on the portion of the main body portion 201 is integrally molded. The elastic portion 203C has a first elastic sheet portion 131C having a thickness t1 integrally molded with the base portion 210, and a third elastic sheet portion 133C having a thickness t3 integrally molded with the hub 113 and the tubular portion 112.

<Fourth Embodiment>
The spring guide 100D according to the fourth embodiment of the present invention will be described with reference to FIGS. 9A and 9B. Hereinafter, the points different from those of the second embodiment will be mainly described, and in the drawings, the same configurations as those described in the second embodiment or the corresponding configurations are designated by the same reference numerals and the description thereof will be omitted. ..

In the second embodiment, an example in which the elastic portion 103B is formed from one kind of material has been described. On the other hand, in the fourth embodiment, a plurality of partially elastic sheet portions (first elastic sheet portion 131D, second elastic sheet portion 132D, and third elastic sheet portion 133D) are formed by three different materials. The elastic portion 103D is composed of three types of partially elastic sheet portions.

The first elastic sheet portion 131D is integrally molded into an annular region including a mounting region 110c in the base portion 110. The second elastic sheet portion 132D is integrally molded with the radial outer region of the mounting region 110c in the base portion 110 and the upper surface (inner side surface) of the side wall 111. The third elastic sheet portion 133D is integrally molded on the upper surface of the hub 113 and the upper end surface of the tubular portion 112.

The second elastic sheet portion 132D is formed so as to cover the entire upper surface of the base portion 110 and the entire upper surface (inner side surface) of the side wall 111. Therefore, when the coil spring 4 is broken (broken), even if a part of the broken coil spring 4 falls on the upper surfaces of the base portion 110 and the side wall 111, the second elastic sheet portion 132D gives an impact from the broken portion. Can be absorbed. As a result, damage to the base portion 110 and the side wall 111 can be prevented.

When the material of the second elastic sheet portion 132D is a material having a lower elastic modulus than the material of the first elastic sheet portion 131D, when the sharp portion of the broken portion of the coil spring 4 collides with the second elastic sheet portion 132D. In addition, the second elastic sheet portion 132D may be significantly deformed. Therefore, the impact force is not sufficiently absorbed in the second elastic sheet portion 132D, and the impact force is transmitted to the main body portion 101 via the second elastic sheet portion 132D, which may damage the main body portion 101.

On the other hand, in the fourth embodiment, the second elastic sheet portion 132D is made of a material having a higher elastic modulus than the material of the first elastic sheet portion 131D. Therefore, when the sharp portion of the broken portion of the coil spring 4 collides with the second elastic seat portion 132D, the amount of deformation of the second elastic seat portion 132D is suppressed, and the impact force is effective in the second elastic seat portion 132D. Can be absorbed. As a result, when a part of the broken coil spring 4 falls on the base portion 110 and the side wall 111, damage to the base portion 110 and the side wall 111 can be prevented more effectively.

A circular through hole 135D is formed in the third elastic sheet portion 133D, and the cylinder 1b is inserted through the through hole 135D. The third elastic sheet portion 133D is formed so as to cover the entire upper surface of the hub 113 and the entire upper end surface of the tubular portion 112. Therefore, when the coil spring 4 is broken (broken), even if a part of the broken coil spring 4 falls on the upper surfaces of the hub 113 and the tubular portion 112, the third elastic sheet portion 133D gives an impact from the broken portion. Can be absorbed. As a result, damage to the hub 113 and the tubular portion 112 can be prevented.

The through hole 135D of the third elastic sheet portion 133D is formed so that the inner peripheral portion thereof abuts on the outer circumference of the cylinder 1b over the entire circumference. The third elastic sheet portion 133D closes the gap between the cylinder 1b and the insertion hole 120 of the cylinder portion 112 through which the cylinder 1b is inserted. As a result, the third elastic sheet portion 133D can prevent foreign matter such as sand and water from entering the gap between the cylinder 1b 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.

The third elastic sheet portion 133D is made of a material having a lower elastic modulus than the material of the first elastic sheet portion 131D. Therefore, even if the spring guide 100D is displaced in the axial direction with respect to the cylinder 1b during the operation of the shock absorber 1, the third elastic seat portion 133D appropriately follows the outer circumference of the cylinder 1b. Therefore, when the shock absorber 1 is operated, the closed state of the gap between the cylinder 1b and the insertion hole 120 by the third elastic sheet portion 133D is appropriately maintained. As a result, the sealing property between the outer circumference of the cylinder 1b and the inner circumference of the insertion hole 120 is higher than that in the case where the third elastic sheet portion 133D is made of a material having a higher elastic modulus than the material of the first elastic sheet portion 131D. Can be improved.

According to such a fourth embodiment, the same effect as that of the second embodiment is obtained. Further, it is possible to more effectively prevent the main body 101 from being damaged due to the broken portion of the broken coil spring 4 colliding with the radial outer region of the mounting region 110c. Further, the sealing property between the outer circumference of the cylinder 1b and the inner circumference of the insertion hole 120 can be further improved, and foreign matter can enter the gap between the outer circumference of the cylinder 1b and the inner circumference of the insertion hole 120. It is possible to more effectively prevent deterioration and damage caused by it.

<Modified example of the fourth embodiment>
In the fourth embodiment, the spring guide 100D (see FIG. 9B) in which the base portion 110 extends outward in the radial direction of the mounting region 110c and the side wall 111 extends diagonally upward from the radial outer end portion thereof. As described above, the present invention is not limited to this. The side wall 111 can be omitted.

As shown in FIGS. 10A and 10B, the spring guide 200D according to the present modification is the same as the fourth embodiment with respect to the main body 201 (see FIG. 4B) described in the modification of the first embodiment. , A partially elastic sheet portion whose material is different depending on the portion of the main body portion 201 is integrally molded. The elastic portion 203D integrally molded with the main body 201 has a first elastic sheet portion 131D integrally molded with the base portion 210 and a third elastic sheet portion 133D integrally molded with the hub 113 and the tubular portion 112. .. The third elastic sheet portion 133D is made of a material having a lower elastic modulus than the material of the first elastic sheet portion 131D.

The following modifications are also within the scope of the present invention, and the configurations shown in the modifications and the configurations described in the above-described embodiments can be combined, the configurations described in the above-mentioned different embodiments can be combined, and the following differences can be made. It is also possible to combine the configurations described in the modified example.

<Modification example 1>
For example, the configuration described in the third embodiment described above and the configuration described in the fourth embodiment described above may be combined. As shown in FIGS. 11A and 11B, the elastic portion 103E of the spring guide 100E according to the present modification is mounted on the first elastic sheet portion 131E having a thickness t1 integrally molded in the annular region including the mounting region 110c. A second elastic sheet portion 132E having a thickness t2 integrally molded on the radial outer region of the placement region 110c and the upper surface (inner side surface) of the side wall 111, and a third thickness t3 integrally molded on the hub 113 and the tubular portion 112. It has an elastic sheet portion 133E. The magnitude relationship of the thicknesses t1, t2, t3 is t3 <t1 <t2. Further, the elastic modulus of the second elastic sheet portion 132E is higher than the elastic modulus of the first elastic sheet portion 131E, and the elastic modulus of the third elastic sheet portion 133E is lower than the elastic modulus of the first elastic sheet portion 131E. According to such a modification, the same operation and effect as those of the above-described third and fourth embodiments are obtained.

In the present modification and the third embodiment, an example in which the magnitude relationship of the thicknesses t1, t2, and t3 is t3 <t1 <t2 has been described, but the present invention is not limited thereto. The magnitude relationship of the thicknesses t1, t2, and t3 can be appropriately changed depending on the specifications of the suspension device 10. For example, the thickness t3 of the third elastic sheet portion 133C may be thicker than the thickness t1 of the first elastic sheet portion 131C. In this case, the impact force of the broken portion of the coil spring 4 that falls on the upper surfaces of the hub 113 and the tubular portion 112 can be effectively absorbed, and the hub 113 and the tubular portion 112 can be effectively prevented from being damaged.

Further, the thickness t1 of the first elastic sheet portion 131C may be thicker than the thickness t2 of the second elastic sheet portion 132C. The thickness t1 of the first elastic seat portion 131C affects the riding comfort of the vehicle on which the suspension device 10 is mounted. By increasing the thickness t1 of the first elastic sheet portion 131C, the force acting on the coil spring 4 from the road surface is applied to the coil spring 4 in a state where the coil spring 4 is not broken and the vehicle body is normally elastically supported. Can be sufficiently absorbed. Therefore, the riding comfort of the vehicle on which the suspension device 10 is mounted can be improved.

At this time, it is desirable that the thickness t2 of the second elastic sheet portion 132C is set to a thickness or more that can appropriately absorb the impact from the fragment portion of the coil spring 4. As a result, the ride comfort of the vehicle on which the suspension device 10 is mounted can be improved, and the impact from the fractured portion of the coil spring 4 can be absorbed by the second elastic seat portion 132C.

The thickness t1 of the first elastic sheet portion 131C is not uniform, and the thickness may differ depending on the location. That is, the magnitude relationship between the thickness t1 of the first elastic sheet portion 131C and the thickness t2 of the second elastic sheet portion 132C may differ depending on the location within the first elastic sheet portion 131C. For example, the thickness t1 of the first elastic sheet portion 131C may be changed to form the first elastic sheet portion 131C so as to follow the shape of the end portion seated on the first elastic sheet portion 131C in the coil spring 4. As a result, the coil spring 4 can be stably mounted.

<Modification 2>
Further, the configuration described in the above-described modification of the third embodiment and the configuration described in the above-mentioned modification of the fourth embodiment may be combined. As shown in FIGS. 12A and 12B, the elastic portion 203E of the spring guide 200E according to this modification is the first elastic sheet portion 131E having a thickness t1 integrally molded in the annular region including the mounting region 110c, and the hub. It has a third elastic sheet portion 133E having a thickness t3 integrally molded with the 113 and the tubular portion 112. The magnitude relationship of the thicknesses t1 and t3 is t3 <t1. Further, the elastic modulus of the third elastic sheet portion 133E is lower than the elastic modulus of the first elastic sheet portion 131E.

In this modification and the fourth embodiment, the elastic modulus of the second elastic sheet portion 132D is higher than the elastic modulus of the first elastic sheet portion 131D, and the elastic modulus of the third elastic sheet portion 133D is the first. Although an example having an elastic modulus lower than that of the elastic sheet portion 131D has been described, the present invention is not limited to this. The magnitude relationship of the elastic modulus can be appropriately changed depending on the specifications of the suspension device 10. For example, the elastic modulus of the third elastic sheet portion 133D may be higher than the elastic modulus of the first elastic sheet portion 131C. In this case, the impact force of the broken portion of the coil spring 4 that falls on the upper surfaces of the hub 113 and the tubular portion 112 can be effectively absorbed, and the hub 113 and the tubular portion 112 can be effectively prevented from being damaged.

Further, the elastic modulus of the first elastic sheet portion 131D may be higher than the elastic modulus of the second elastic sheet portion 132D. The elastic modulus of the first elastic seat portion 131D affects the riding comfort of the vehicle on which the suspension device 10 is mounted. By increasing the elastic modulus of the first elastic sheet portion 131D, the impact acting on the coil spring 4 can be sufficiently absorbed by the first elastic sheet portion 131D. Therefore, the riding comfort of the vehicle on which the suspension device 10 is mounted can be improved. Further, the elastic modulus of the third elastic sheet portion 133D may be higher than the elastic modulus of the second elastic sheet portion 132D. The elastic moduli of the first elastic sheet portion 131D, the second elastic sheet portion 132D, and the third elastic sheet portion 133D may all be the same.

<Modification example 3>
As shown in FIG. 13, a seating portion 140 on which the lower end portion of the coil spring 4 is seated may be formed on the elastic portion 103F. The seating portion 140 has a curved surface whose cross section is curved so as to follow the cross-sectional shape of the coil spring 4. The seating portion 140 prevents the lower end portion of the coil spring 4 from being displaced outward in the radial direction. As a result, the coil spring 4 can be held more stably by the spring guide 100F.

<Modification example 4>
An example in which the base portions 110 and 210 of the main body portions 101 and 201 have a disk shape has been described, but the present invention is not limited thereto. The base portions 110 and 210 may have a polygonal plate shape.

<Modification 5>
As shown in FIG. 14, the lip 136 provided in the through hole 135G formed in the third elastic sheet portion 133G may abut on the outer circumference of the cylinder 1b. That is, the third elastic sheet portion 133G may have a lip 136 in contact with the outer circumference of the cylinder 1b of the shock absorber 1. The lip 136 is provided so as to project from the third elastic sheet portion 133G toward the center of the through hole 135G. The lip 136 is provided over the entire circumference of the through hole 135G. The lip 136 closes the gap between the cylinder 1b and the insertion hole 120 of the cylinder portion 112 into which the cylinder 1b is inserted.

Similar to the second embodiment, the lip 136 can 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.

Further, in the second embodiment, since the gap between the cylinder 1b and the insertion hole 120 is closed by the entire inner peripheral surface of the third elastic sheet portion 133B, the inner peripheral surface of the third elastic sheet portion 133B is closed with respect to the cylinder 1b. Has a tightening allowance. Therefore, when the cylinder 1b is inserted into the insertion hole 120, a tightening force for tightening the cylinder 1b is generated by the tightening allowance of the third elastic sheet portion 133B. The larger the thickness of the third elastic sheet portion 133B, the greater the tension generated. Since the third elastic sheet portion 133B is thick and has a large axial region for pressing the cylinder 1b, it becomes difficult for the third elastic sheet portion 133B to move with respect to the cylinder 1b due to a large tension force. As a result, when the cylinder 1b is inserted into the insertion hole 120, a large force is applied to the third elastic sheet portion 133B, and the third elastic sheet portion 133B and the hub 113 may be separated from each other.

On the other hand, in this modification, the gap between the cylinder 1b and the insertion hole 120 is closed by the lip 136 instead of the third elastic sheet portion 133G. As a result, the axial region in which the third elastic sheet portion 133G presses the cylinder 1b can be made smaller as compared with the second embodiment, and the third elastic sheet portion 133G can easily move with respect to the cylinder 1b. As a result, the force applied to the third elastic sheet portion 133G when the cylinder 1b is inserted into the insertion hole 120 is reduced, and the peeling between the third elastic sheet portion 133G and the hub 113 can be suppressed. The third elastic sheet portion 133G may be the third elastic sheet portion 133B, 133C, 133D, 133E, 133F.

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

The spring guides 100A, 100B, 100C, 100D, 100E, 100F, 200A, 200B, 200C, 200D, 200E are attached to the shock absorber 1 provided between the vehicle body and the wheels, and the coil spring 4 elastically supports the vehicle body. Elastic portions 103A, 103B, 103C, 103D, 103E, 103F which are supporting spring guides and are provided between the main body portions 101 and 201 made of a resin material and between the main body portions 101 and 201 and the end portion of the coil spring 4. , 203A, 203B, 203C, 203D, 203E, and the elastic parts 103A, 103B, 103C, 103D, 103E, 103F, 203A, 203B, 203C, 203D, 203E are more than the materials of the main body parts 101, 201. It is made of a material having a low elastic modulus and is integrally molded with the main bodies 101 and 201.

In this configuration, since the main bodies 101 and 201 of the spring guides 100A, 100B, 100C, 100D, 100E, 100F, 200A, 200B, 200C, 200D and 200E are made of a resin material, the main bodies 101 and 201 are made of metal. It is possible to reduce the weight as compared with the case where it is formed of a material. Further, since the elastic portions 103A, 103B, 103C, 103D, 103E, 103F, 203A, 203B, 203C, 203D, 203E are integrally molded with the main body portions 101, 201, the main body portions 101, 201 and the elastic portions 103A, 103B , 103C, 103D, 103E, 103F, 203A, 203B, 203C, 203D, 203E can be reduced in number of parts as compared with the case where they are individually formed separate parts.

In the spring guides 100A, 100B, 100C, 100D, 100E, and 100F, the main body 101 has a disk-shaped base portion 110 having a mounting area 110c on which the coil spring 4 is mounted, and the radial outer side of the base portion 110. A first elastic sheet having a side wall 111 extending upward from an end portion, and elastic portions 103A, 103B, 103C, 103D, 103E, 103F integrally formed with a mounting region 110c in the base portion 110. The portions 131A, 131B, 131C, 131D, 131E, and the second elastic sheet portions 132A, 132B, 132C, 132D, 132E integrally formed with the radial outer region of the mounting region 110c in the base portion 110 and the side wall 111. Has.

In this configuration, the second elastic sheet portions 132A, 132B, 132C, 132D, 132E are integrally molded in the radial outer region of the mounting region 110c in the base portion 110 and the side wall 111. Therefore, even if the coil spring 4 is broken and a part of the broken coil spring 4 falls on the base portion 110 and the side wall 111, the second elastic sheet portions 132A, 132B, 132C, 132D, 132E cause the coil spring 4 to be separated. Since the impact from the broken portion can be absorbed, damage to the base portion 110 and the side wall 111 of the spring guides 100A, 100B, 100C, 100D, 100E, 100F can be effectively prevented.

In the spring guide 100C, the thickness t1 of the first elastic sheet portion 131C is thicker than the thickness t2 of the second elastic sheet portion 132C.

In this configuration, the force acting on the coil spring 4 from the road surface can be sufficiently absorbed by the first elastic seat portion 131C in a state where the coil spring 4 is not broken and the vehicle body is normally elastically supported. Therefore, the riding comfort of the vehicle on which the suspension device 10 is mounted can be improved.

In the spring guides 100C and 100E, the thickness t2 of the second elastic sheet portions 132C and 132E is thicker than the thickness t1 of the first elastic sheet portions 131C and 131E.

The spring guides 100D and 100E are made of a material in which the second elastic sheet portions 132D and 132E have a higher elastic modulus than the material of the first elastic sheet portions 131D and 131E.

With these configurations, when a part of the broken coil spring 4 falls on the base portion 110 and the side wall 111, damage to the base portion 110 and the side wall 111 can be prevented more effectively.

In the spring guides 100B, 100C, 100D, 100E, 100F, 200B, 200C, 200D, 200E, the main bodies 101 and 201 have disk-shaped bases 110 and 210 on which the lower end of the coil spring 4 is placed. It has a positioning portion (hub 113) that is provided inside the coil spring 4 so as to protrude from the base portions 110 and 210 and defines the position of the lower end portion of the coil spring 4, and has elastic portions 103B, 103C, 103D. , 103E, 103F, 203B, 203C, 203D, 203E are integrally molded with the first elastic sheet portions 131B, 131C, 131D, 131E, which are integrally molded with the base portions 110, 210, and the positioning portion (hub 113). It has a third elastic sheet portion 133B, 133C, 133D, 133E.

In this configuration, the third elastic sheet portions 133B, 133C, 133D, and 133E are integrally molded with the positioning portion (hub 113) provided inside the coil spring 4. Therefore, even if the coil spring 4 is broken and a part of the broken coil spring 4 falls to the position defining portion (hub 113), the coil spring 4 is broken by the third elastic sheet portions 133B, 133C, 133D, 133E. Since the impact from the portion can be absorbed, it is possible to effectively prevent damage to the positioning portion (hub 113) of the spring guides 100B, 100C, 100D, 100E, 100F, 200B, 200C, 200D, 200E. ..

In the spring guides 100B, 100C, 100D, 100E, 100F, 200B, 200C, 200D, 200E, the main body 101, 201 has a cylindrical cylinder 112 through which the cylinder 1b of the shock absorber 1 is inserted, and the third The elastic sheet portions 133B, 133C, 133D, 133E close the gap between the cylinder 1b and the insertion hole 120 of the cylinder portion 112 into which the cylinder 1b is inserted.

In this configuration, the third elastic sheet portions 133B, 133C, 133D, 133E can prevent foreign matter such as sand and water from entering the gap between the cylinder 1b and the insertion hole 120.

In the spring guides 100B, 100C, 100D, 100E, 100F, 200B, 200C, 200D, 200E, the third elastic sheet portions 133B, 133C, 133D, 133E, 133F are in contact with the cylinder 1b of the shock absorber 1 and inserted into the cylinder 1b. It has a lip 136 that closes the gap between it and the hole 120.

In this configuration, when the cylinder 1b is inserted into the insertion hole 120, it becomes difficult to apply a force to the third elastic sheet portions 133B, 133C, 133D, 133E, 133F in the insertion direction of the cylinder 1b. As a result, peeling between the third elastic sheet portion 133B, 133C, 133D, 133E, 133F and the hub 113 can be suppressed.

In the spring guides 100C, 100E, 200C, 200E, the thickness t3 of the third elastic sheet portions 133C, 133E is thinner than the thickness t1 of the first elastic sheet portions 131C, 131E.

In this configuration, the frictional resistance between the third elastic seat portions 133C, 133E and the outer peripheral portion of the cylinder 1b when the spring guides 100C, 100E, 200C, 200E are mounted on the cylinder 1b can be reduced. As a result, the workability of mounting the spring guides 100C and 100E on the shock absorber 1 can be improved.

The spring guides 100D, 100E, 200D, and 200E are made of a material in which the third elastic sheet portions 133D, 133E have a lower elastic modulus than the material of the first elastic sheet portions 131D, 131E.

In this configuration, even if the spring guides 100D, 100E, 200D, and 200E are displaced in the axial direction with respect to the cylinder 1b during the operation of the shock absorber 1, the third elastic sheet portions 133D, 133E are provided with respect to the outer periphery of the cylinder 1b. It can be properly followed and the space between the cylinder 1b and the insertion hole 120 can be closed by the third elastic sheet portions 133D and 133E.

The suspension device 10 includes the spring guides 100A, 100B, 100C, 100D, 100E, 100F, 200A, 200B, 200C, 200D, 200E, the shock absorber 1, and the upper mount 2 attached to the tip of the rod 1a of the shock absorber 1. The spring guides 100A, 100B, 100C, 100D, 100E, 100F, 200A, 200B, 200C, 200D, 200E are fixed to the coil spring 4 provided between the upper mount 2 and the cylinder 1b of the shock absorber 1. It is provided with a metal support portion (support ring 3) for supporting the spring guides 100A, 100B, 100C, 100D, 100E, 100F, 200A, 200B, 200C, 200D, 200E.

In this configuration, the spring guides 100A, 100B, 100C, 100D, 100E, 100F, 200A, 200B, 200C, 200D, 200E are provided, so that the suspension has been reduced in weight without increasing the number of parts. The device 10 can be provided.

Although the embodiments of the present invention have been described above, the above embodiments are only a part of the application examples of the present invention, and the technical scope of the present invention is limited to the specific configurations of the above embodiments. Absent.

1 ... Shock absorber, 1a ... Rod, 1b ... Cylinder, 2 ... Upper mount, 3 ... Support ring (support part), 4 ... Coil spring, 10 ... Suspension device , 100A, 100B, 100C, 100D, 100E, 100F, 200A, 200B, 200C, 200D, 200E ... Spring guide, 101, 201 ... Main body, 103A, 103B, 103C, 103D, 103E, 103F, 203A , 203B, 203C, 203D, 203E ... Elastic part, 110, 210 ... Base part, 110c ... Mounting area, 111 ... Side wall, 112 ... Cylinder part, 113 ... Hub ( Positioning part), 120 ... Insertion hole, 131A, 131B, 131C, 131D, 131E ... First elastic sheet part, 132A, 132B, 132C, 132D, 132E ... Second elastic sheet part 133B, 133C, 133D, 133E, 133F, 133G ... Third elastic sheet part, 136 ... Lip

Claims (11)

A spring guide that is attached to a shock absorber provided between the vehicle body and wheels and supports a coil spring that elastically supports the vehicle body.
The main body made of resin material and
It has an elastic portion provided between the main body portion and the end portion of the coil spring.
The spring guide is characterized in that the elastic portion is made of a material having a lower elastic modulus than the material of the main body portion and is integrally molded with the main body portion. The spring guide according to claim 1.
The main body
A disk-shaped base portion having a mounting area on which the coil spring is mounted, and
It has a side wall extending upward from the radial outer end of the base portion.
The elastic part is
A first elastic sheet portion integrally molded with the previously described placement region in the base portion,
A spring guide having a region on the radial outer side of the previously described pre-described region in the base portion and a second elastic sheet portion integrally molded on the side wall. The spring guide according to claim 2.
A spring guide characterized in that the thickness of the first elastic sheet portion is thicker than the thickness of the second elastic sheet portion. The spring guide according to claim 2.
A spring guide characterized in that the thickness of the second elastic sheet portion is thicker than the thickness of the first elastic sheet portion. The spring guide according to any one of claims 2 to 4.
The spring guide characterized in that the second elastic sheet portion is made of a material having a higher elastic modulus than the material of the first elastic sheet portion. The spring guide according to claim 1.
The main body
A disk-shaped base on which the lower end of the coil spring is placed, and
It has a position defining portion which is provided inside the coil spring so as to protrude from the base portion and defines the position of the lower end portion of the coil spring.
The elastic part is
The first elastic sheet portion integrally molded with the base portion and
A spring guide having a third elastic sheet portion integrally molded with the positioning portion. The spring guide according to claim 6.
The main body has a cylindrical cylinder through which the cylinder of the shock absorber is inserted.
The third elastic seat portion is a spring guide characterized in that the gap between the cylinder and the insertion hole of the cylinder portion through which the cylinder is inserted is closed. The spring guide according to claim 7.
The third elastic seat portion is a spring guide having a lip that comes into contact with the cylinder of the shock absorber and closes the gap between the cylinder and the insertion hole. The spring guide according to claim 7 or 8.
A spring guide characterized in that the thickness of the third elastic sheet portion is thinner than the thickness of the first elastic sheet portion. The spring guide according to any one of claims 7 to 9.
The spring guide is characterized in that the third elastic sheet portion is made of a material having a lower elastic modulus than the material of the first elastic sheet portion. The spring guide according to any one of claims 1 to 10.
With the shock absorber
An upper mount attached to the tip of the shock absorber rod,
The coil spring provided between the spring guide and the upper mount,
A suspension device including a metal support portion fixed to a cylinder of the shock absorber and supporting the spring guide.

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