JPH11294511A - Suspension device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the weight and to prevent generation of noise caused by interference between a coil spring and a spring seat and prevent transmission of the noise to an inside of a vehicle without increase of the cost. SOLUTION: In this suspension device for vehicle constituted of a shock absorber 1 and a coil spring 2 disposed between an upper spring seat 3 provided on a piston rod 11 side of the shock absorber 1 and a lower spring seat 4 provided on an outer cylinder 12 side of the shock absorber 1, the lower spring seat 4 is made of resin.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle suspension device.

[0002]

2. Description of the Related Art Conventionally, as such a vehicle suspension device, for example, one having a structure as described in Japanese Utility Model Laid-Open No. 2-54612 is known. This conventional vehicle suspension device includes a coil spring disposed between a shock absorber, an upper spring seat provided on a piston rod side of the shock absorber, and a lower spring seat provided on a strut outer cylinder side of the shock absorber. Wherein both spring seats are formed of a metal material.

[0003]

However, in the above-described conventional vehicle suspension device, since the upper spring seat and the lower spring seat are made of metal, there are the following problems. That is, in recent years, there has been a demand for reducing the fuel consumption by reducing the weight of the vehicle to save energy, and a reduction in the weight of the suspension device has also been demanded. However, the spring seat in the conventional suspension device is generally formed of an iron-based metal material as described above, and is generally fixed by welding or press-fitting into the outer cylinder of the shock absorber. There was a problem that the weight became heavy. Further, when the spring seat is formed of metal, the coil spring is also formed of metal, so that when the coil spring expands and contracts, the coil spring and the spring seat interfere with each other, generating a large metal tapping sound, When the coil spring is compressed, the end turns of the coil spring at both ends are narrow, so that when the coil spring expands and contracts, the spring wires of the same part interfere with each other to generate a striking sound between the lines. And, this line striking sound is because the metal as the spring sheet material has a high spring constant and a resonance point,
There is a problem that the power is transmitted to the suspension link or the vehicle body via the spring seat and the shock absorber formed of a metal material, and is transmitted to the driver as abnormal noise. Therefore, as a solution to the noise problem, conventionally, it has been proposed to attach a nylon tube to the coil spring and further spread a rubber sheet on the spring seat side to prevent the generation of the noise. In addition to the extra assembly work and the increase in the number of parts, not only the cost and weight are increased, but also the rubber sheet is displaced and the nylon tube is damaged due to the interference between the spring wires.
At present, the transmission of the line striking sound to the vehicle body has not been eliminated as ever.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems. It is possible to reduce the weight and to reduce the noise caused by the interference between the coil spring and the spring seat without increasing the cost. It is an object of the present invention to provide a vehicle suspension device that can reliably prevent generation of noise and transmission of the abnormal noise into the vehicle.

[0005]

According to a first aspect of the present invention, there is provided a vehicle suspension apparatus including a shock absorber and an upper spring provided on a vehicle body-side connecting member of the shock absorber. In a vehicle suspension device including a seat and a coil spring disposed between a lower spring seat provided on a wheel-side connecting member of a shock absorber, the upper spring seat and / or the lower spring seat are formed of resin. That means. In the vehicle suspension device according to the second aspect, the first aspect is provided.
The vehicle suspension device according to claim 1, wherein the upper spring is provided on an outer periphery of a vehicle-side connecting member of the shock absorber and / or a wheel-side connecting member of the shock absorber that connects an inner peripheral side of the upper spring seat and / or the lower spring seat. A stopper is provided for locking the inner peripheral side of the seat and / or the lower spring seat to prevent its axial movement, and the inner peripheral mounting portion of the upper spring seat and / or the lower spring seat and the vehicle body of the shock absorber. The rotation control means is provided on the outer periphery of the side connection member and / or the wheel side connection member of the shock absorber so as to be engaged with each other in the circumferential direction to thereby prevent the relative rotation from rotating. In the vehicle suspension device according to a third aspect, in the vehicle suspension device according to the first or second aspect, between an inner peripheral mounting hole of the lower spring seat and an outer peripheral surface of a wheel-side connecting member of the shock absorber. And an axially enlarged portion for forming an axial through gap. According to a fourth aspect of the present invention, in the vehicle suspension device according to any one of the first to third aspects, an upper end is connected to a vehicle body-side connecting member of the shock absorber, and a lower end is fixed to the lower spring seat. By providing a cylindrical dust cover that can be extended and contracted in the axial direction, an inner peripheral mounting portion of the lower spring seat and a lower end portion of the dust cover are radially engaged with each other so that the dust cover and the dust cover are both engaged. An engaging means for connecting and fixing the space is provided. Claim 5
The vehicle suspension device according to any one of claims 1 to 4,
The upper spring seat and / or the lower spring seat may be provided with a radial projection that penetrates between the lines in the end turn of the coil spring.

[0006]

In the vehicle suspension device according to the first aspect of the present invention, since the upper spring seat and / or the lower spring seat are formed of resin as described above, the weight of the vehicle suspension device can be reduced. In addition, since the resin has a much lower spring constant and resonance point than iron, it prevents metal hitting due to interference between the coil spring and the spring seat when the coil spring expands and contracts, and also when the coil spring expands and contracts. Even if line-to-line noise is generated due to interference between spring wires at both end winding portions, transmission of the line-to-line noise to the shock absorber must be through a resin spring sheet having an extremely low spring constant and resonance point. As a result, transmission of abnormal noise to the driver is prevented. Further, unlike the related art, additional components such as a nylon tube and a rubber sheet are not required, so that there is no increase in cost and weight due to the work of assembling extra additional components and increasing the number of components. In the vehicle suspension device according to the second aspect, the upper spring seat and / or the lower spring seat may be provided on stopper means provided on an outer periphery of a vehicle body-side connecting member of the shock absorber and / or a wheel-side connecting member of the shock absorber. By being locked, the axial movement is prevented, and the relative rotation is prevented by the rotation preventing engagement means. Therefore, even if the spring seat is formed of resin, the shock absorber is located on the vehicle body side. The connection member and / or the wheel-side connection member of the shock absorber can be axially and circumferentially fixed. Also, the vehicle body-side connecting member of the shock absorber and / or
Or, when the wheel side connecting member side of the shock absorber is made of metal such as iron and the spring seat side is made of resin,
Due to a difference in thermal expansion coefficient between the two forming materials, a temperature change causes a loosening of the connecting and fixing portion of the both, thereby causing the spring seat to wear due to relative rotation of the connecting and fixing portion of the two, and generation of play. In addition, there is a problem that the durability is reduced, and when the center of the shock absorber and the center of the spring seat are displaced, a part of the spring force is generated by the rotation of the spring seat. Since it acts as a lateral force, there is a problem that suspension characteristics are changed. However, in the second aspect, since the spring seat is fixed in the circumferential direction by the engagement means as described above, the above-described problem does not occur. The vehicle suspension device according to claim 3, wherein the outer peripheral surface of the wheel-side connecting member of the shock absorber is formed by an axially enlarged portion of an inner peripheral mounting hole of the lower spring seat that contacts the outer peripheral surface of the wheel-side connecting member of the shock absorber. , An axial through-gap acting as a drainage hole is formed between them, so that rust on the wheel-side connecting member of the shock absorber is prevented. In the vehicle suspension device according to the fourth aspect, the lower end of the dust cover is fixed to the lower spring seat by the engaging means, so that dust can be prevented from entering through the lower end opening of the dust cover. Also,
In order to form engagement means for connecting and fixing the two by radially engaging with each other, it is necessary to form an annular groove or an annular projection on the lower spring seat side. If it is made of iron, a processing step for that is added, but since the lower spring seat is made of resin, the engaging means is formed when the lower spring seat is molded with resin. The annular groove or annular protrusion can be easily formed integrally. In the vehicle suspension device according to the fifth aspect, since the radial projection formed of the resin enters between the lines in the end winding portion of the coil spring, the generation of a line hitting sound in the end winding portion is prevented. Is done.

[0007]

Embodiments of the present invention will be described below in detail with reference to the drawings. (First Embodiment of the Invention) First, the structure of a vehicle suspension device according to a first embodiment of the invention shown in FIGS. 1 to 3 will be described.

FIG. 1 is a partially cutaway front view showing a vehicle suspension device according to a first embodiment of the present invention, FIG. 2 is an enlarged sectional view of the same (a longitudinal sectional view taken along line II-II in FIG. 3), and FIG. 3
FIG. 3 is a cross-sectional view taken along the line III-III in FIG. 2, and in these figures, 1 indicates a shock absorber, and 2 indicates a coil spring.

That is, the vehicle suspension device according to the first embodiment of the present invention includes a shock absorber 1, an upper spring seat 3 provided on a piston rod 11 (a vehicle-side connecting member) of the shock absorber 1, and a shock absorber 1. The coil spring 2 is disposed between the lower spring seat 4 provided on the cylinder outer cylinder 12 (wheel-side connecting member), the bump rubber 5, and the dust cover 6.

The dust cover 6 is formed in a bellows cylindrical shape which can be contracted in the axial direction, and the upper end is integrally formed with the lower end of the bumper bar 5. Assembling to the piston rod 11 is performed in a state of being locked to a step formed on the rod 11.

The upper spring seat 3 is formed of an iron-based material, and a bush 8 provided in an inner peripheral mounting hole thereof is connected to the bracket 7 of the piston rod 11.
Is mounted on the piston rod 11 and fastened with a nut 9. A rubber sheet 10 is provided on the outer peripheral lower surface of the upper spring seat 3, and the upper end surface of the coil spring 2 is supported by the upper spring seat 3 via the rubber sheet 10.

The lower spring seat 4 is integrally formed of a resin such as polyacetal, while the cylinder outer cylinder 12 to which the lower spring seat 4 is mounted is formed in a cylindrical shape of a metal material such as iron. On the outer peripheral surface of the cylinder outer cylinder 12, on the mounting portion of the lower spring seat 4, as shown in detail in FIGS. On the inner peripheral surface of the mounting hole 4a of the lower spring seat 4, there is formed an axial locking groove 4b in which the projection 12a is press-fitted and locked. The lower spring seat 4 is mounted on the cylinder outer cylinder 12 in a state where the circumferential movement is prevented by the press-fit engagement of the ridge 12a. That is, each of the axial ridges 12a and each of the axial locking grooves 4b constitute a detent engaging means as claimed in the claims.

Further, at the lower end of each of the axial ridges 12a, there is formed a projection (stopper means) 12b projecting radially from the axial ridge 12a. The lower spring seat 4 is attached to the cylinder outer cylinder 12 in a state where the axial movement is prevented from being downward by abutting the lower end opening end face of the axial locking groove 4b against the 12b.

Further, as shown in FIGS. 2 and 3, the minimum hole diameter of the mounting hole 4a in the lower spring seat 4 is formed larger than the outer diameter of the cylinder outer cylinder 4b. An axial through gap 13 is formed therebetween. The minimum diameter portion of the mounting hole 4a constitutes an enlarged portion in the axial direction of the present invention.

Next, the operation and effect of the first embodiment of the invention will be described. In the vehicle suspension device according to the first embodiment of the present invention, as described above, since the lower spring seat 4 is formed of a resin such as polyacetal, the weight of the vehicle suspension device can be reduced. .

Since the resin has an extremely low spring constant and resonance point as compared with iron, the coil spring 2 and the lower spring seat 4 when the coil spring 2 expands and contracts.
In addition to preventing occurrence of metal tapping noise due to interference between the springs, even if a line tapping noise occurs due to interference between spring wires at both end turns when the coil spring 2 expands and contracts, this line tapping noise is generated. The transmission to the shock absorber 1 is performed through the resin-made lower spring seat 4 having an extremely low spring constant and resonance point, so that the vibration is damped, so that transmission of abnormal noise to the driver can be prevented.

Further, since it is possible to prevent generation of metal tapping and transmission of tapping noise between the lines to the driver without requiring additional parts such as a nylon tube and a rubber sheet as in the prior art, an assembling work of extra parts is required. Also, there is no increase in cost and weight due to an increase in the number of parts.

Further, the relative rotation of the lower spring seat 4 is prevented by engaging the respective axial locking grooves 4b with the respective axial ridges 12a provided on the outer periphery of the cylinder outer cylinder 12. , Each protrusion 1 of the cylinder outer cylinder 12
Since the lower end opening end surface of the axial locking groove 4b abuts on the lower end 2b, the lower spring seat 4 is prevented from moving downward in the axial direction with respect to the cylinder outer cylinder 12.
Even if the lower spring seat 4 is formed of resin, it can be securely and firmly fixed to the cylinder outer cylinder 12 in the axial and circumferential directions.

If the cylinder outer cylinder 12 is made of a metal such as iron and the lower spring seat 4 side is made of resin, the fixing method by simply press-fitting means that the difference between the thermal expansion coefficients of both forming materials and the temperature change cause the two. The connecting and fixing portions of the first and second fixing members may be loosened, causing the two connecting and fixing portions to rotate relative to each other, thereby causing the lower spring seat 4 to wear or reducing the durability due to play. In addition, when a difference is provided between the center of the cylinder outer cylinder 12 and the center of the lower spring seat 4, a part of the spring force acts as a lateral force due to the rotation of the lower spring seat 4. However, there is a problem that the suspension characteristics are changed. However, in the first embodiment of the present invention, the lower spring Since bets 4 is circumferentially fixed, it is possible to prevent the occurrence of the aforementioned problems.

An axially extending gap 13 is formed between the outer cylinder 12 and the cylinder outer cylinder 12, which acts as a drainage hole which axially penetrates the inner peripheral mounting hole 4a of the lower spring seat 4, so that a shock absorber is provided. 1 can prevent the occurrence of rust.

Next, another embodiment of the present invention will be described. In the description of the other embodiments, the same components as those in the first embodiment of the present invention are denoted by the same reference numerals, and the description thereof will be omitted.

(Embodiment 2) In a vehicle suspension system according to Embodiment 2 of the present invention, as shown in a partially cutaway front view of FIG.
The side is also made of a resin such as polyacetal na and has a structure in which the rubber sheet (10) is omitted.

Therefore, in the vehicle suspension device according to the second embodiment of the present invention, substantially the same effects as those of the first embodiment of the present invention can be obtained, and further, the weight can be further reduced and the rubber sheet 10 can be obtained. Can be omitted, so that the cost can be reduced accordingly.

(Third Embodiment) In a vehicle suspension system according to a third embodiment of the present invention, the lower end opening side of the dust cover 6 is fixed to the lower spring seat 4, as shown in FIGS. It is something to do.

That is, an annular engaging groove 4 d is formed on the outer peripheral surface of the boss 4 c protruding from the upper opening edge of the mounting hole 4 a in the lower spring seat 4 while the lower end opening of the dust cover 6 is formed. On the peripheral surface, the annular engagement groove 4d
The lower end of the dust cover 6 is connected to the boss 4c of the lower spring seat 4 by press-fitting the annular protrusion 6a into the annular engagement groove 4d. The dust cover 6 is fixed and the lower end opening of the dust cover 6 is closed.

In the third embodiment of the present invention, the axial locking projections 12b constituting the stopper are formed in the same circumferential width as the axial projections 12a so as to protrude annularly over the entire circumferential direction. The lower spring seat 4 is prevented from moving axially downward with respect to the cylinder outer cylinder 12 by locking the lower end opening end surface of the mounting hole 4a other than the respective axial locking grooves 4b to the projection 12b. It is attached in the state that it was.

The inner peripheral surface of the mounting hole 4a is press-fitted into the outer peripheral surface of the cylinder outer cylinder 11, and the inner peripheral surface of the mounting hole 4a between the axial locking grooves 4b is provided with a ventilation hole 1a.
An axial through groove 4e for forming the groove 4 is formed.

In the figure, reference numeral 15 denotes a fastening band mounted on the outer periphery of the annular projection 6a of the dust cover 6.

In the vehicle suspension device according to the third embodiment of the present invention, the same effect as that of the first embodiment of the present invention is obtained, and as described above, the lower end of the dust cover 6 is connected to the lower spring seat 4. Is fixed, the dust can be prevented from entering from the lower end opening of the dust cover 6.

Generally, in order to form an engagement means for connecting and fixing the two by radially engaging with each other, it is necessary to form an annular groove or an annular projection on the lower spring seat side. When the lower spring seat is formed of iron as in the above, a processing step for that is added, but the third embodiment of the present invention is described.
Since the lower spring seat 4 is formed of resin, the annular engagement groove 4d constituting the engagement means can be easily formed by integral molding when the lower spring seat 4 is formed of resin. Therefore, there is no increase in cost.

(Embodiment 4) In a vehicle suspension system according to Embodiment 4 of the present invention, as shown in FIGS. 8 and 9, a straight type having the same diameter as the entire coil spring 2 is used. A spiral groove 41 is formed in the lower spring seat 4 at the lower end support portion of the coil spring 2 along the spiral shape of the lower end turn portion of the coil spring 2, and the lower end of the coil spring 2 is formed in the spiral groove 41. It is in a state of being supported by being mounted with the end winding portion engaged.

Therefore, each spiral groove 41 adjacent in the axial direction is
Since the spiral ridges (radial projections) 42 defining the space are intruded between the lines in the lower end turn of the coil spring 2, the seats with a narrow space between the lines when the coil springs are compressed. Interference between the spring wires in the winding portion is prevented, whereby an effect that it is possible to prevent the occurrence of a beating noise between lines is obtained.

The configuration other than the above is substantially the same as that of the third embodiment of the present invention, and therefore, substantially the same effects as those of the third embodiment of the present invention can be obtained.

(Fifth Embodiment) In a vehicle suspension device according to a fifth embodiment of the present invention, as shown in a partially cutaway front view of FIG. 10, the present invention is applied to a so-called inverted shock absorber. FIG.

That is, the shock absorber 1 according to the fifth embodiment of the present invention is in a state in which the mounting direction is reversed upside down from a general shock absorber in which the cylinder is connected to the vehicle body side and the piston rod is connected to the wheel side. A connecting rod (vehicle-side connecting member) 23 provided on the bottom side (upper end) of a cylinder 22 in which a piston 21 is slidably housed and connected to the vehicle body side. An outer cylinder (wheel-side connecting member) that is slidably mounted on and guides the sliding of the cylinder 22.
The distal end (lower end) of the piston rod 25 is connected to the lower end bottom of the piston 24, and the piston rod 25 side is connected to the wheel side via a fixing bracket 26 fixed to the outer periphery of the lower end of the outer cylinder 24. .

In the fifth embodiment of the present invention, the lower spring seat 4 is mounted and fixed on the outer periphery of the upper part of the outer cylinder 23. The lower spring seat 4
The structure and the mounting and fixing structure to the outer cylinder 24 are the same as those in the first embodiment of the present invention, and therefore detailed description thereof will be omitted.

Therefore, in the vehicle suspension device according to the fifth embodiment of the present invention, substantially the same effects as those of the first embodiment of the present invention can be obtained.

Although the embodiments of the present invention have been described in detail with reference to the drawings, the specific configuration is not limited to the embodiments of the present invention, and a design change or the like may be made without departing from the gist of the present invention. The present invention is also included in the present invention.

For example, in the embodiment of the present invention, the cylinder outer cylinder is formed of iron, but may be formed of a metal other than iron, for example, aluminum.

[0040]

As described above, in the vehicle suspension device according to the first aspect of the present invention, since the upper spring seat and / or the lower spring seat are formed of resin, the weight can be reduced and the cost can be reduced. An effect that the generation of abnormal noise due to the interference between the coil spring and the spring seat and the transmission of the abnormal noise to the vehicle interior can be reliably prevented without incurring an increase. According to a second aspect of the present invention, in the vehicle suspension device according to the first aspect, a vehicle body-side connecting member of the shock absorber that connects an inner peripheral side of the upper spring seat and / or the lower spring seat. Stoppers are provided on the outer periphery of the wheel-side connecting member of the shock absorber to lock the inner peripheral side of the upper spring seat and / or the lower spring seat to prevent the upper spring seat and / or the lower spring seat from moving in the axial direction. A detent member that prevents relative rotation by engaging the inner peripheral mounting portion of the lower spring seat and the outer peripheral portion of the vehicle-side connecting member of the shock absorber and / or the outer peripheral portion of the wheel-side connecting member of the shock absorber with each other in the circumferential direction. Configuration with a matching means. Therefore, even if the spring seat is formed of resin, the spring seat can be axially and circumferentially fixed to the vehicle body-side connecting member of the shock absorber and / or the wheel-side connecting member of the shock absorber. From the difference in the thermal expansion coefficients of the two forming materials in the above, even if the connection fixing portion of the two is loosened due to the temperature change, the relative rotation can be reliably prevented by the detent engaging means, whereby both are fixed. It becomes possible to prevent wear of the spring seat and changes in suspension characteristics caused by the relative rotation. In the vehicle suspension device according to a third aspect, in the vehicle suspension device according to the first or second aspect, between an inner peripheral mounting hole of the lower spring seat and an outer peripheral surface of a wheel-side connecting member of the shock absorber. By providing an axially enlarged portion that forms an axial through-gap, the axial through-gap acts as a drain hole that axially penetrates the inner peripheral mounting hole of the lower spring seat, thereby providing a shock absorber. Rust of the wheel side connecting member can be prevented. In the vehicle suspension device according to the fourth aspect, the first to fourth aspects are provided.
3. The vehicle suspension device according to claim 3, wherein an upper end is connected to a vehicle body-side connecting member of the shock absorber, and a lower end is fixed to the lower spring seat. An engagement means is provided between an inner peripheral mounting portion of the lower spring seat and a lower end portion of the dust cover so as to radially engage with each other to connect and fix the two. This makes it possible to prevent dust from entering through the lower end opening of the dust cover. In addition, in order to form an engagement means for connecting and fixing the two by radially engaging with each other, it is necessary to form an annular groove or an annular projection on the lower spring seat side. When the sheet is formed of iron, a processing step for that is added, but since the lower spring sheet is formed of resin, the engaging means is used during resin molding of the lower spring sheet. Can be easily formed integrally with each other, thereby preventing an increase in cost. According to a fifth aspect of the present invention, in the vehicle suspension device according to any one of the first to fourth aspects, the upper spring seat and / or the lower spring seat are provided between the lines in the end turn portion of the coil spring. With the configuration in which the radial projections that penetrate are formed, it is possible to prevent the generation of a striking sound at the end winding portion.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view showing a vehicle suspension device according to a first embodiment of the present invention.

FIG. 2 is an enlarged sectional view (a sectional view taken along line II-II in FIG. 3) of a main part of the vehicle suspension device according to the first embodiment of the present invention;

FIG. 3 is a transverse sectional view taken along line III-III in FIG. 2;

FIG. 4 is a partially cutaway front view showing a vehicle suspension device according to a second embodiment of the present invention.

FIG. 5 is a partially cutaway front view showing a vehicle suspension device according to a third embodiment of the present invention.

FIG. 6 is an enlarged sectional view (a sectional view taken along line VI-VI in FIG. 7) of a main part of the vehicle suspension device according to the third embodiment of the present invention;

FIG. 7 is a cross-sectional view taken along line VII-VII of FIG. 6;

FIG. 8 is a partially cutaway front view showing a vehicle suspension device according to a fourth embodiment of the present invention.

FIG. 9 is an enlarged sectional view of a main part of a vehicle suspension device according to a fourth embodiment of the present invention.

FIG. 10 is a partially cutaway front view showing a vehicle suspension device according to a fifth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Shock absorber 2 Coil spring 3 Upper spring seat 4 Lower spring seat 4a Mounting hole 4b Axial locking groove (rotation prevention engaging means) 4d Annular engaging groove (engaging means) 6 Dust cover 6a Annular protrusion (engagement) Means) 11 Piston rod (body-side connecting member) 12 Cylinder outer cylinder (wheel-side connecting member) 12a Axial ridge (rotation preventing engaging means) 12b Projection (stopper means) 13 Penetrating gap 23 Connecting rod (vehicle-side) Connection member) 24 Outer cylinder (wheel side connection member) 42 Spiral ridge (radial projection)

Claims (5)

[Claims] The present invention comprises a shock absorber, and a coil spring disposed between an upper spring seat provided on a vehicle-side connecting member of the shock absorber and a lower spring seat provided on a wheel-side connecting member of the shock absorber. A vehicle suspension device according to claim 1, wherein the upper spring seat and / or the lower spring seat are formed of resin. 2. The upper spring seat and / or the outer periphery of a vehicle-side connecting member of the shock absorber and / or a wheel-side connecting member of the shock absorber for connecting an inner peripheral side of the upper spring seat and / or the lower spring seat. Alternatively, stopper means for locking the inner peripheral side of the lower spring seat to prevent its axial movement is provided, and an inner peripheral mounting portion of the upper spring seat and / or the lower spring seat and a vehicle body side connecting member of the shock absorber. 2. A detent engaging means for preventing relative rotation by engaging each other in a circumferential direction with an outer periphery of a wheel-side connecting member of a shock absorber. Suspension device for vehicles. 3. An axially enlarged portion which forms an axial through clearance between an inner peripheral mounting hole of the lower spring seat and an outer peripheral surface of a wheel side connecting member of the shock absorber. The vehicle suspension device according to claim 1 or 2. 4. An upper end is connected to a vehicle body-side connecting member of the shock absorber, and a lower end is fixed to the lower spring seat. An engaging means is provided between the inner peripheral mounting portion and a lower end portion of the dust cover, the engaging means being engaged with each other in a radial direction to connect and fix the dust cover and the dust cover. The vehicle suspension device according to any one of the above. 5. A method according to claim 1, wherein the upper spring seat and / or the lower spring seat are formed with radial projections which penetrate between wires of the end turn portion of the coil spring. A suspension device for a vehicle according to any one of the claims.