JP2002295558A - Spring seat rubber - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spring seat which can prevent an end of outer periphery side from turning up when it is fitted. SOLUTION: This seat rubber consists of a cylinder part 1 which is fitted in a protrusion equipped with a support member and placed to be inserted into an inner periphery side of a coil spring, and a annular flange 2 which extends to the outside of a diameter direction from one end of the cylindrical part 1 and placed between the end of the coil spring and the support. The flange 2 is formed to have a slant to approach the support as it moves from an end of the inner periphery to an outer periphery end and the slant is formed in the whole part of the flange 2. When fitted, a reaction force to press the outer periphery end of the flange 2 to a direction to approach the outer periphery end of the flange 2 to the support, so the outer periphery end of the flange 2 is prevented from turning up.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spring seat rubber which is used, for example, between a coil spring provided on a suspension of a vehicle and a supporting member for supporting an upper end or a lower end of the coil spring. .

[0002]

2. Description of the Related Art Conventionally, a suspension mounted on a vehicle incorporates a coil spring that absorbs mainly large vibration transmitted from a wheel side to a vehicle body side. As shown in FIG. 7, both ends of the coil spring 6 are supported by a support member 7 provided on the vehicle body facing the upper end thereof and a support member 8 provided on the wheel side facing the lower end thereof. It is installed in such a way. In order to prevent the metal members from coming into direct contact with each other between the coil spring 8 and each of the support members 7 and 8, noise, wear, and the like are generated. The spring seat rubber 5 is interposed.
Various spring rubbers are known as disclosed in, for example, Japanese Patent Application Laid-Open No. H10-184758.

[0003] The spring seat rubber 5 shown in FIG.
As shown in FIG. 5 and FIG. 6, the housing includes a tubular portion 51 and a ring-shaped flange portion 52 extending radially outward from one end of the tubular portion 51. On the outer end surface of the flange portion 52,
In order to adjust the spring characteristics of the flange portion 52, a plurality of grooves 52a extending in the radial direction are provided. And
The spring seat rubber 5 is inserted into the inner peripheral side of the end of the coil spring 6 by fitting the cylindrical portion 51 to the cylindrical protrusions 7a, 8a provided on the support members 7, 8, and the flange portion. 52 is arranged so as to be located between the seating surfaces 7 b, 8 b formed around the protrusions 7 a, 8 a of the support members 7, 8 and the end of the coil spring 6.

[0004] The coil spring 6 used here has a shape in which the center portion is bulged outward from both ends, so that the flange portion 51 of the spring seat rubber 5 causes the coil spring 6 to vibrate. The second winding portion is formed in such a size that it can be abutted when compressed by the input of (1). That is, the flange portion 52 is formed to have an outer diameter substantially equal to the outer diameter of the second winding portion of the coil spring 6.

[0005]

When the conventional spring seat rubber 5 is mounted as shown in FIG. 7, the end of the coil spring 6 is in contact with the inner peripheral portion of the flange portion 52. Becomes In this state, the load of the vehicle body applied to the coil spring 6 strongly acts only on the inner peripheral side portion of the flange portion 52.
As shown in (1), the outer peripheral end of the flange portion 52 is easily deformed so as to be turned up from the bearing surface 8b of the support member 8. The deformation in which the outer peripheral end of the flange portion 52 is turned up in this manner is that the flange portion 52 is formed wide in the radial direction so that the second winding portion of the coil spring 6 can abut. Cause. However, if the flange 52 is deformed in this way, the coil spring 6
Of the second winding does not properly contact the outer peripheral portion of the flange portion 52, or the outer peripheral portion of the flange portion 52 contacts the seating surface 8b of the support member 8 when the second reel portion abuts. (A striking sound, a fricative sound, etc.) occurs.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a spring seat rubber which can prevent the outer peripheral end of the flange from being turned up at the time of mounting. Is what you do.

[0007]

Means for Solving the Problems, Function and Effect of the Invention According to the first aspect of the present invention, there is provided a coil spring and a support member disposed between the end of the coil spring and a support member opposed to the coil spring. In the spring seat rubber to be provided, a tubular portion fitted to the protrusion provided on the support member and inserted and disposed on the inner peripheral side of the end of the coil spring, and a radial direction from one end of the tubular portion A ring-shaped flange portion extending outward and disposed between the end portion of the coil spring and the support member, wherein the flange portion extends at least on the outer peripheral portion from the inner peripheral side to the outer peripheral side. And means having an inclined portion that is inclined so as to approach the supporting member.

[0008] The spring seat rubber of the present invention is interposed between the coil spring and the support member. When the load of the vehicle body applied to the coil spring strongly acts on the inner peripheral side portion of the flange, the spring seat rubber is provided. A reaction force that presses the outer peripheral end of the flange portion in a direction to approach the support member is generated in the inclined portion that is provided so as to approach the support member from the inner peripheral side toward the outer peripheral side. Since this reaction force increases as it approaches the outer peripheral end of the flange portion, it effectively suppresses the force at which the outer peripheral end portion of the flange portion tries to turn up from the support member.

Therefore, the spring seat rubber according to the present invention can prevent the outer peripheral end of the flange from being turned up during mounting. Thereby, the second winding portion of the coil spring can be disposed so as to appropriately abut on the outer peripheral portion of the flange portion, which is generated by the outer peripheral portion of the flange portion abutting on the bearing surface of the support member. It is also possible to prevent generation of abnormal noise (such as striking sound and friction sound).

In the present invention, the inclined portion provided on the flange portion may be provided on the entire flange portion, or may be provided only on the outer peripheral portion of the flange portion. Also,
This inclined portion can be formed so as to be linear or curved in the radial direction, as described in claim 2. Preferably, the inclination angle of the inclined portion is set in a range of 5 ° to 30 °.

The thickness of the flange portion is not always required to be constant in the radial direction, but may be reduced on the outer peripheral side or may be increased on the contrary. Further, in order to adjust the spring characteristics and the like of the flange portion, irregularities may be provided on both surfaces of the flange portion to change the thickness, and the thickness may not be constant in the circumferential direction. Further, in the flange portion of the present invention, the radial width from the inner peripheral end to the outer peripheral end of the flange portion is at least twice the coil diameter of the coil spring. Is preferred.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a cross-sectional view of a spring seat rubber according to the present embodiment, which is a cross-sectional view taken along line II of FIG. 2, and FIG. 2 is a bottom view of the spring seat rubber. is there.

The spring seat rubber of the present embodiment is
As shown in FIGS. 1 and 2, a cylindrical portion 1 and a ring-shaped flange portion 2 extending from one end of the cylindrical portion 1 so as to be inclined outward in the radial direction are integrally formed by rubber. Is formed.

The cylindrical portion 1 is formed in a cylindrical shape having substantially the same length as the coil diameter of a coil spring disposed outside the cylindrical portion 1. The outer peripheral surface of the tubular portion 1 is formed so as to have a curved surface with a concave central portion in the axial direction so as to substantially match the curved surface shape of the outer peripheral surface of the coil. Tubular part 1
Has an inner diameter substantially constant in the axial direction. Therefore, the cylindrical portion 1 is formed so that the thickness gradually increases from the center toward both ends.

The flange portion 2 is formed in a ring shape so as to extend radially outward from one end of the cylindrical portion 1, and the flange portion 2 of the cylindrical portion 1 moves from the inner peripheral end to the outer peripheral end. It is inclined to move away from one end in the axial direction. That is, the entire area from the inner peripheral end to the outer peripheral end of the flange portion 2 is an inclined portion extending linearly in the radial direction. The inclination angle θ of the flange portion 2 is about 10 ° with respect to a plane orthogonal to the axis. The thickness of the flange portion 2 is substantially constant in the radial direction. A plurality of grooves 2a extending in the radial direction are provided on the outer end surface of the flange portion 2 in order to change the thickness of the flange portion 2 and adjust the spring characteristics.

The spring seat rubber of the present embodiment configured as described above has the same structure as that of the prior art shown in FIG.
As shown in (1), the coil spring 6 is disposed between a coil spring 6 provided on a suspension of a vehicle and supporting members 7 and 8 for supporting an upper end or a lower end of the coil spring 6. That is, the cylindrical portion 1 is fitted to the cylindrical projections 7a, 8a provided on the support members 7, 8, and the coil spring 6
The flange 2 is inserted into the inner peripheral side of the end of the support member 7, and the bearing surface 7 b formed around the protrusions 7 a, 8 a of the support members 7, 8.
8b and the end of the coil spring 6.

As described above, when the spring seat rubber of the present embodiment is disposed, the load of the vehicle body applied to the coil spring 6 strongly acts on the inner peripheral side portion of the flange portion 2, so that the entire body is inclined. A reaction force is generated in the flange portion 2 formed in such a manner that the outer peripheral end portion of the flange portion 2 is pressed in a direction approaching the bearing surfaces 7b, 8b of the support members 7, 8. Since this reaction force becomes larger as it is closer to the outer peripheral end of the flange portion 2, the force of the outer peripheral end portion of the flange portion 2 trying to turn up from the bearing surfaces 7 b, 8 b of the support members 7, 8 is effectively suppressed. In addition, the turning-up of the outer peripheral end of the flange portion 2 is reliably prevented. Thereby, the spring seat rubber is arranged so that the second winding portion of the coil spring 6 appropriately abuts on the outer peripheral portion of the flange portion 2, and the outer peripheral portion of the flange portion 2 is seated on the support members 7, 8. By contacting the surfaces 7b and 8b, no abnormal noise (such as a striking sound or a fricative sound) is generated.

As described above, according to the spring seat rubber of the present embodiment, it is possible to reliably prevent the outer peripheral end of the flange portion 2 from being turned up during mounting. Can be disposed so as to appropriately contact the outer peripheral portion of the flange portion 2, and the outer peripheral portion of the flange portion 2 is supported by the support members 7 and 8.
, And the generation of abnormal noise (such as a striking sound and a frictional sound) caused by contact with the seat surfaces 7b and 8b.

Note that the flange portion 2 in the above embodiment is used.
Is formed so that the entire area from the inner peripheral end to the outer peripheral end is an inclined portion extending linearly in the radial direction,
As shown in a spring seat rubber shown in FIG.
May be provided. Also in this case, the inclined portion 2b of the flange portion 2 can reliably prevent the outer peripheral end of the flange portion 2 from being turned up as in the case of the above embodiment.

As shown in FIG. 4, the flange portion 2 is formed such that the entire region from the inner peripheral end to the outer peripheral end is an inclined portion extending in a curved shape in the radial direction.
May be formed. Also in this case, the same operation and effect as in the above embodiment can be obtained.

[Brief description of the drawings]

1 is a cross-sectional view of a spring seat rubber according to an embodiment of the present invention, which is a cross-sectional view taken along line II of FIG. 2;

FIG. 2 is a bottom view of the spring seat rubber according to the embodiment of the present invention.

FIG. 3 is a sectional view of a spring seat rubber according to another embodiment of the present invention.

FIG. 4 is a sectional view of a spring seat rubber according to still another embodiment of the present invention.

5 is a sectional view of a conventional spring seat rubber, and is a sectional view taken along line VV of FIG.

FIG. 6 is a bottom view of a conventional spring seat rubber.

FIG. 7 is a cross-sectional view showing an attached state of a conventional spring seat rubber.

FIG. 8 is an explanatory view showing a state where a problem has occurred in a conventional spring seat rubber.

[Explanation of symbols]

1, 51: cylindrical portion 2, 52: flange portion 2
a ... concave groove 2b ... inclined part 5 ... spring seat rubber 6 ... coil spring 7, 8 ... support member 7
a, 8a: Projection 7b, 8b: Seat

Claims (4)

[Claims] 1. A spring seat rubber interposed between a coil spring and a support member disposed opposite to an end of the coil spring, wherein the coil is fitted to a protrusion provided on the support member. A tubular portion inserted and arranged on the inner peripheral side of an end of the spring; and a ring extending radially outward from one end of the tubular portion and disposed between an end of the coil spring and the support member. A spring portion, wherein the flange portion has an inclined portion that is inclined at least on the outer peripheral side so as to approach the support member from the inner peripheral side toward the outer peripheral side. rubber. 2. The spring seat rubber according to claim 1, wherein the inclined portion is formed so as to be linear or curved in the radial direction. 3. The spring seat rubber according to claim 1, wherein an inclination angle of the inclined portion is 5 ° to 30 °. 4. A radial width from an inner peripheral end to an outer peripheral end of the flange portion is two times a coil diameter of the coil spring.
The spring seat rubber according to any one of claims 1 to 3, wherein the spring seat rubber is twice or more.