JP3218278U - Rubber sheet and shock absorber - Google Patents

Abstract

A rubber sheet suitable for an end winding part having a planar end surface and a shock absorber provided with the rubber sheet are provided. A rubber sheet 1 to be mounted on an end winding portion of a spring of a shock absorber, a planar bottom surface portion 10 provided along a planar end surface of the end winding portion, and the bottom surface portion 10 And a rising portion 20 rising from the end portion on the inner peripheral side. [Selection] Figure 1

Description

  The present invention relates to a rubber seat that is mounted on a spring winding portion of a shock absorber, and a shock absorber that includes this rubber seat.

  Conventionally, rubber seats are mounted on end turns of springs for shock absorbers for vehicles in order to prevent contact between metals. This rubber sheet has a C-shaped cross section so that it can be attached from the outer peripheral side of the spring (see, for example, Patent Document 1).

International Publication No. 2011/118390

  By the way, the end winding part of a spring is supported by the flange part which protrudes in an outer peripheral direction among cylindrical spring seats. The spring seat and the spring are both made of a metal material. Therefore, as described above, the rubber sheet having a C-shaped cross section so as to be attached from the outer peripheral side of the spring opens to the inner peripheral side, and is suitable for avoiding contact between the inner peripheral side of the spring and the spring seat. It cannot be said that the shape is different.

  Some end winding portions of the spring have a planar end surface formed by grinding. Thus, the rubber sheet having the C-shaped cross section cannot be mounted on the end winding portion having the planar end surface.

  An object of the present invention is to provide a rubber sheet suitable for an end winding part having a planar end face, and a shock absorber provided with the rubber sheet.

  In one aspect, the rubber sheet is a rubber sheet attached to the end winding portion of the spring of the shock absorber, and a planar bottom surface portion provided along the end surface of the end portion of the end winding portion, A rising portion that rises from an inner peripheral end of the bottom surface portion.

  In another aspect, the shock absorber includes the rubber seat and the spring.

  According to the present invention, it is possible to provide a rubber sheet suitable for the end winding portion having a planar end surface and a shock absorber provided with the rubber sheet.

It is a perspective view which shows the rubber sheet which concerns on one embodiment. It is a top view which shows the rubber sheet which concerns on one embodiment. It is a front view which shows the rubber sheet which concerns on one embodiment. It is a front view showing buffer 100 concerning one embodiment. It is the figure which expanded a part of VV cross section of FIG. It is a front view which shows the state which mounted | wore the spring winding part of the rubber seat which concerns on one Embodiment. It is a perspective view which shows the state which mounted | wore the spring winding part of the rubber seat which concerns on one Embodiment.

Hereinafter, a rubber sheet and a shock absorber according to embodiments of the present invention will be described with reference to the drawings.
1, 2, and 3 are a perspective view, a plan view, and a front view showing a rubber sheet 1 according to an embodiment.

FIG. 4 is a front view showing the shock absorber 100 according to the embodiment.
FIG. 5 is an enlarged view of a part of the VV cross section of FIG.
6 and 7 are a front view and a perspective view showing a state in which the rubber sheet 1 is mounted on the end winding portion 103a of the spring 103. FIG.

  As shown in FIGS. 1 to 3, the rubber sheet 1 includes a bottom surface portion 10, a rising portion 20, a bending portion 30, and a support portion 40. The bottom surface portion 10, the rising portion 20, the bending portion 30, and the support portion 40 are integrally formed.

  As shown in FIGS. 4 to 7, the rubber seat 1 is attached to the end winding portion 103 a of the spring 103 of the shock absorber 100 for the vehicle. The material of the rubber sheet 1 is not particularly limited, and is, for example, a thermoplastic polyurethane elastomer (for example, trade name “ET195” manufactured by BASF). The rubber sheet 1 is provided over 260 ° in the circumferential direction, for example, in a plan view shown in FIG. In addition, the rubber sheet 1 is illustrated longer in FIGS. 4, 6, and 7 than FIGS. 1 to 3. Further, the rubber sheet 1 is preferably provided in the circumferential direction, for example, over 180 ° or more and 360 ° or less, but the angle in the circumferential direction is not particularly limited and may exceed 360 °, Alternatively, it may be less than 180 °.

The bottom surface portion 10 is provided along the planar end surface 103b of the end winding portion 103a and has a planar shape. The end surface 103b is a ground surface, for example.
The rising portion 20 is provided so as to rise, for example, in the vertical direction from the inner peripheral end of the bottom surface portion 10. As shown in FIG. 3, the height of the rising portion 20 is a part of the spring 103 shown in FIGS. 6 and 7 on the one end 103c side (or the support portion 40 that supports the one end 103c) side, and the spring 103. Gradually decreases toward the one end 103c.

  The bending portion 30 is bent from the upper end of the rising portion 20 toward the outer peripheral side along the curved surface of the wire of the spring 103. That is, the bending portion 30 is provided continuously with the rising portion 20, and is bent upward from the upper end of the rising portion 20 and then bent downward.

  As shown in FIG. 2, the bending portion 30 is provided at an interval L in the circumferential direction of the spring 103 from one end 103 c of the spring 103 and the support portion 40 that supports the one end 103 c shown in FIGS. 6 and 7. . That is, the bending portion 30 is not continuously provided on a part of the rising portion 20 on the support portion 40 side (the one end 103c side of the spring 103).

  As shown in FIG. 3, a vertical gap G is provided between the outer peripheral end of the bending portion 30 and the outer peripheral end of the bottom surface portion 10. When the rubber sheet 1 is mounted on the end winding portion 103a of the spring 103, the rubber sheet 1 is mounted on the end winding portion 103a while the gap G is widened from the inner peripheral side of the end winding portion 103a. Note that, as an example, the gap G is provided with a length shorter than the height of the rising portion 20. Moreover, the cross-sectional shape of the rubber sheet 1 exhibits a D shape (substantially D shape) in which the bottom surface portion 10 is a straight portion. Or it can be said that the cross-sectional shape of the rubber sheet 1 exhibits a semicircular shape (substantially semicircular shape) in which the bottom surface portion 10 is a straight portion. Moreover, the curved part 30 may be abbreviate | omitted among the rubber sheets 1, and in that case, the cross-sectional shape of the rubber sheet 1 will exhibit the L-shape in which the bottom face part 10 and the rising part 20 make a right angle. .

  In the rubber sheet 1, the rising portion 20 may be omitted, and the curved portion 30 may be provided continuously to the inner peripheral end of the bottom surface portion 10. In this case, the bending portion 30 also functions as the rising portion 20.

  The support portion 40 is provided so as to rise from the circumferential end portion of the bottom surface portion 10 so as to support the one end 103 c of the spring 103. Thereby, the support part 40 is provided in succession on the bottom face part 10 and the rising part 20.

In addition, it is good to arrange | position so that the rubber sheet 1 may closely_contact | adhere with respect to the spring 103 by apply | coating an adhesive agent between the rubber sheet 1 and the spring 103. FIG.
As shown in FIG. 4, the shock absorber 100 includes a rubber seat 1, an upper spring seat 101, a piston rod 102, a spring 103, a shell case 104, a thrust washer 105, a spring seat 106, and a seat lock 107. And an ADJ tube (adjusting tube) 108 and a dust boot 109.

The upper spring seat 101 is located above the spring 103.
The piston rod 102 slides in a cylinder in the shell case 104.
As shown in FIG. 5, the thrust washer 105 is a sheet-like ring member made of, for example, synthetic resin placed on the flange portion 106 a of the spring seat 106. The bottom surface portion 10 of the rubber sheet 1 described above is placed on a thrust washer 105.

The spring seat 106 is located below the spring 103. The material of the spring seat 106 is a metal material such as aluminum.
The seat lock 107 fixes the position of the spring seat 106.
As shown in FIG. 5, since the rising portion 20 is located between the end turn portion 103a and the spring seat 106, the end turn portion 103a and the spring seat 106 do not come into contact with each other on the inner peripheral side of the end turn portion 103a. .

  In the present embodiment described above, the rubber sheet 1 is attached to the end winding portion 103 a of the spring 103 of the shock absorber 100. The rubber sheet 1 includes a planar bottom surface portion 10 provided along the planar end surface 103b of the end winding portion 103a, and a rising portion 20 that rises from an inner peripheral end of the bottom surface portion 10. Prepare.

  Therefore, the rising portion 20 can prevent contact between the end turn portion 103 a and the spring seat 106 on the inner peripheral side of the end turn portion 103 a of the spring 103. Further, since the bottom surface portion 10 extends along the planar end surface 103b of the spring 103, the rubber sheet 1 can be attached to the spring 103 having the planar end surface 103b. Therefore, according to this Embodiment, the rubber sheet 1 suitable for the end winding part 103a which has the planar end surface 103b, and the shock absorber 100 provided with this rubber sheet 1 can be provided.

  In the present embodiment, the rubber sheet 1 further includes a bending portion 30. The curved portion 30 is provided continuously with the rising portion 20 and is curved toward the outer peripheral side along the curved surface of the wire of the spring 103. Further, the bending portion 30 is provided at a distance L from the one end 103 c of the spring 103 in the circumferential direction of the spring 103. Therefore, even if the one end 103 c of the spring 103 and the second winding portion of the spring 103 are in contact with each other, the rubber sheet 1 is wound around so that the bottom surface portion 10 and the rising portion 20 are arranged on the one end 103 c side of the spring 103. It can be attached to the portion 103a. The curved portion 30 also has a function of preventing contact between the lower end of the second turn of the spring 103 and the end turn portion 103a.

  In the present embodiment, the rubber sheet 1 further includes a support portion 40. The support portion 40 is provided continuously to the bottom surface portion 10 and the rising portion 20, and supports one end 103 c of the spring 103. Thereby, the position shift of the rubber sheet 1 with respect to the spring 103 can be prevented.

DESCRIPTION OF SYMBOLS 1 Rubber sheet 10 Bottom part 20 Standing part 30 Curved part 40 Support part 100 Shock absorber 101 Upper spring sheet 102 Piston rod 103 Spring 103a End winding part 103b End face 103c One end 104 Shell case 105 Thrust washer 106 Spring seat 106a Flange part 107 Seat lock 108 ADJ tube (adjusting tube)
109 Dust boots G Gap L Interval

Claims (4)

It is a rubber seat that is attached to the end winding part of the spring of the shock absorber,
A planar bottom surface provided along the planar end surface of the end turn,
A rubber sheet comprising: a rising portion that rises from an inner peripheral end of the bottom surface portion. A curved portion that is provided continuously with the rising portion and curves toward the outer peripheral side along the curved surface of the wire rod of the spring;
The rubber sheet according to claim 1, wherein the curved portion is provided at an interval in the circumferential direction of the spring from one end of the spring.   The rubber sheet according to claim 1, further comprising a support portion that is provided continuously to the bottom surface portion and the rising portion and supports one end of the spring. The rubber sheet according to any one of claims 1 to 3,
A shock absorber comprising the spring.

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