JP2011069445A - Spring seat of vehicular suspension - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem that an increase of weight is not only unavoidable but also a cost increase is brought about because the center part of a spring seat rubber becomes a thick wall shape over the entire circumference. <P>SOLUTION: The spring seat is formed of an elastic member and arranged between a coil spring 14 which constitutes a vehicular suspension and a seat bracket 15 to which the coil spring 14 is attached. It also has a projection part 13, which projects in the direction of pressing the seat by the compression deformation of the coil spring 14 and makes the wall thickness of a part pressing the coil spring 14 thicker, on a bracket contact surface 12 which closely contacts the seat bracket 15 when the coil spring 14 is compressed and deformed. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a spring seat for a vehicle suspension, and more particularly to a spring seat for a vehicle suspension that is attached to an attachment member to which a coil spring constituting the vehicle suspension is attached and serves as a seat for the coil spring.

  2. Description of the Related Art Conventionally, in an automobile suspension system that includes an arm member that supports a wheel, a shock absorber, and a coil spring, the coil spring is elastically disposed between the spring mounting member to which the coil spring is attached and the coil spring. Spring seats to be connected are known.

  As such a thing, there exists "a spring seat rubber of a vehicle suspension apparatus" (refer patent document 1), for example. This "spring suspension rubber for vehicle suspension system" has a cylindrical portion that fits into the convex portion of the upper seat bracket, and a flange portion that is clamped between the coil spring and the seat surface of the upper seat bracket. The base end surface that comes into contact with the surface is formed into a tapered surface in advance, and the thickness of the flange portion gradually decreases toward the outer peripheral side.

  Thereby, even if the spring seat rubber repeatedly receives the pressing force of the coil spring and deforms, and the rubber outer peripheral part is lifted and pushed outward, the force that the rubber outer peripheral part tries to lift is weakened. It is possible to prevent the rubber outer periphery from being greatly turned up. Therefore, it is possible to prevent the spring seat rubber from coming off from between the spring mounting member and the coil spring due to turning up.

Japanese Patent Laid-Open No. 10-184752

  However, in the conventional “spring seat rubber of a vehicle suspension device” (see Patent Document 1), the center portion of the spring seat rubber has a thick shape over the entire circumference. Will bring up.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a vehicle suspension that can prevent the coil spring pressing surface from turning up without increasing the weight and cost even when the pressing force of the coil spring constituting the vehicle suspension device is repeatedly received. Is to provide a spring seat.

  To achieve the above object, a spring seat for a vehicle suspension according to the present invention is formed by an elastic member and is arranged between a coil spring constituting the vehicle suspension and a spring mounting member to which the coil spring is attached. When the coil spring is compressively deformed, the attachment member contact surface that is in close contact with the spring attachment member protrudes in the sheet pressing direction due to the compression deformation of the coil spring and increases the thickness of the portion pressed by the coil spring. Has a protrusion.

In the spring seat for a vehicle suspension according to another aspect of the present invention, the projecting portion has at least a coil end of the coil spring at the time of compressive deformation of the coil spring at a spring contact surface with which the coil spring contacts. It arrange | positions corresponding to the coil end contact | adherence part which closely_contact | adheres.
In the spring seat of the suspension for a vehicle according to another aspect of the present invention, the protruding portion straddles a position corresponding to the vertical wall portion of the spring contact surface with which the coil end of the coil spring positioned and arranged contacts. Thus, it is formed in a ridge shape extending along the coil winding direction.

  According to the spring seat for a vehicle suspension according to the present invention, when the coil spring constituting the vehicle suspension is compressed and deformed, the compression deformation of the coil spring is brought into contact with the attachment member contact surface that is in close contact with the spring attachment member to which the coil spring is attached. The protrusion of the coil spring increases the thickness of the portion pressed in the sheet pressing direction by the coil spring, so that even if the pressing force of the coil spring constituting the vehicle suspension device is repeatedly received, the coil spring pressing surface Preventing the turning-up of the spring can reduce the increase in the rubber weight in the spring seat accompanying the formation of the protruding portion, and can increase the cost.

  Further, in the spring seat of the vehicle suspension described above, the protrusion corresponds to at least the coil end contact portion of the spring contact surface with which the coil spring contacts, where the coil end of the coil spring is in close contact during compression deformation of the coil spring, The spring that accompanies the formation of the projecting portion can reliably and effectively prevent the coil spring pressing surface from turning up even if the pressing force of the coil spring constituting the vehicle suspension device is repeatedly received. The increase in the weight of rubber in the sheet can be reduced and the cost can be increased.

  Moreover, in the spring seat of the vehicle suspension, the projecting portion extends along the coil winding direction across the position corresponding to the vertical wall portion of the spring contact surface with which the coil end of the coil spring positioned and contacts. Since it is formed in a ridge shape, even if the pressing force of the coil spring constituting the vehicle suspension device is repeatedly received, it is possible to reliably and effectively prevent the coil spring pressing surface from turning up. The increase in the rubber weight in the spring seat accompanying the formation can be reduced, and the cost can be increased.

The spring seat of the suspension for vehicles concerning one embodiment of this invention is shown, (a) is a perspective view by the side of a receiving seat, and (b) is a partial perspective view by the side of a bracket contact surface. 1 shows a state in which the spring seat of FIG. 1 is mounted between a bracket and a coil spring, (a) is a plan view on the coil spring side, and (b) is a cross-sectional view taken along line AA of (a).

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
1A and 1B show a spring seat for a vehicle suspension according to an embodiment of the present invention. FIG. 1A is a perspective view of a receiving seat surface side, and FIG. 1B is a partial perspective view of a bracket contact surface side. 2 shows a state in which the spring seat of FIG. 1 is mounted between a bracket and a coil spring, (a) is a plan view on the coil spring side, and (b) is a cross-sectional view taken along line AA of (a). It is.

  As shown in FIGS. 1 and 2, the spring seat 10 of the vehicle suspension is formed into a thick annular (ring) shape having a rectangular cross section by an elastic member such as natural rubber (NR), for example. One annular end surface is used as a seating surface (spring contact surface) 11, and the other annular end surface is used as a bracket contact surface (mounting member contact surface) 12, and the spring seat 10 is turned over on the bracket contact surface 12. It has a protruding portion 13 for preventing the rise.

  The suspension for a vehicle in which the spring seat 10 is used includes, for example, an arm member (not shown) that supports wheels so as to be swingable around a predetermined swing center axis with respect to a vehicle body side member, and the swing end side is mounted. It has the structure connected with the vehicle body side via the shock absorber (not shown) and the coil spring 14 (refer FIG. 2), and the coil spring 14 is independently arrange | positioned in the position different from a shock absorber.

  One end (for example, the upper end) of the coil spring 14 is attached to a seat bracket (spring mounting member) 15 of the vehicle body side member via the upper seat made of an elastic member, that is, the spring seat 10 (see FIG. 2), and the other end. The (for example, lower end) side is incorporated between the vehicle body side member and the wheel side support member by being attached to the wheel side support member via a lower seat made of an elastic member (not shown).

The seat bracket 15 is formed, for example, by pressing a relatively thick metal plate into a substantially hat-like shape with a downward-facing hook, and a flange-like seat seat around the frustoconical convex portion 15a. It has a surface 15b (see FIG. 2) and is fixed to the vehicle body panel by bolts / nuts or welding.
The spring seat 10 is positioned and fixed to the seat bracket 15 with the convex portion 15a entering the fitted state in the cylindrical space 10a (see FIG. 1) (see FIG. 2). The coil spring 14 is positioned and fixed to the fixed spring seat 10 in a state where the end of the spring seat 10 fitted with the convex portion 15a enters the coil internal space (see FIG. 2).

  That is, the spring seat 10 is disposed between the coil spring 14 and the seat bracket 15 to which the coil spring 14 is attached, and the attachment of the coil spring 14 to the seat bracket 15 is interposed. The coil spring 14 is formed in an annular shape in plan view corresponding to the shape of one end (for example, the upper end) of the coil spring 14. When the coil spring 14 is compressed and deformed, the one end surface of the coil spring 14 is received. It is in contact with the seat seat surface 15b.

  On the inner peripheral side of the seat surface 11, a cylindrical wall portion 16 that protrudes into the coil inner space of the coil spring 14 while forming a cylindrical space 10 a is projected. The cylindrical wall portion 16 is integrally formed with the cylindrical wall portion 16 and has a vertical wall portion 16b that forms a vertical wall surface 16a on the receiving seat surface 11, and a plurality of (here, 3) protruding along the cylindrical space 10a. ) Guide protrusions 16c are formed. Then, the guide protrusion 16 c is inserted into the coil internal space of the coil spring 14 together with the cylindrical wall portion 16, and the winding end (coil end) 14 a which is a cut end surface portion of the coil spring 14 is locked to the vertical wall surface 16 a. Thus, the coil spring 14 is positioned and fixed in a state where the coil spring 14 is in contact with the receiving seat surface 11 of the spring seat 10.

  The bracket contact surface 12 is formed in an annular shape in plan view, which is a flat surface that comes into contact with the seat seat surface 15b of the seat bracket 15, and the seat seat is pressed by the pressing force from the coil spring 14 when the coil spring 14 is compressed and deformed. It closely contacts the surface 15b (see FIG. 2).

A protruding portion 13 is formed at a position corresponding to the vertical wall surface 16a formed on the receiving seat surface 11 side of the bracket contact surface 12 (see FIG. 1).
The protrusion 13 is formed in the sheet pressing direction, which is the direction in which the coil spring 14 presses the spring seat 10 by the compression deformation of the coil spring 14 against the bracket contact surface 12 that is in close contact with the seat bracket 15 when the coil spring 14 is compressed and deformed. The coil spring pressing portion pressed by the coil spring 12 is formed to be thicker (see FIGS. 1B and 2B).

The protrusion 13 corresponds to at least a coil end contact portion of the receiving seat surface 11 that is a spring contact surface with which the coil spring 14 contacts, at which the coil end 14a of the coil spring 14 is in close contact when the coil spring 14 is compressed. Have been placed.
That is, the projecting portion 13 includes a vertical wall surface 16a in which the winding end 14a is positioned and the pressing force from the coil spring 14 is most strongly applied to the receiving seat surface 11 when the coil spring 14 is compressed and deformed. In the pressing force application equivalent region S on the bracket contact surface 12 side corresponding to the pressure application region (see FIG. 2 (a), the encircling line), it has a ridge shape extending along the coil winding direction across the vertical wall surface 16a. It is formed (see FIG. 1B).

By providing the protrusion 13, the thickness of the spring pressing portion of the spring seat 10 pressed by the compression deformation of the coil spring 14 is increased in the spring pressing direction. Even if the end 14a is pressed against the receiving seat surface 11 so as to bite into the receiving seat surface 11, the coil spring 14 has a sufficient thickness to prevent the coil spring 14 from entering the spring seat 10. Yes.
As an example, in the spring sheet 10 having a width of about 15 mm in the sheet radial direction and a thickness of about 12 mm in the sheet thickness direction, the protruding portion 13 has a length extending about 40 mm along the coil winding direction. , And a height in the thickness direction is about 2 mm.

  As described above, since the protrusion 13 formed on the bracket contact surface 12 of the spring seat 10 increases the thickness of the coil spring 14 pressing portion of the spring seat 10 so as to accumulate rubber, the compression deformation of the coil spring 14 is increased. Even when the winding end 14a is pressed into the receiving seat surface 11, the coil spring 14 can be prevented from entering the spring seat 10 and the spring seat 10 is hardly deformed. Can do.

  As a result, even if the pressing force of the coil spring 14 constituting the vehicle suspension apparatus is repeatedly received, the receiving seat surface 11 of the spring seat 10 can be prevented from being pushed outward, and the receiving seat surface 11 is pushed out. Therefore, it is possible to reliably and effectively prevent the flip-up at the pressing surface of the coil spring 14 of the spring seat 10. In addition, since the protrusion 13 is formed and thickened by the coil spring 14, the rubber weight in the spring seat 10 due to the formation of the protrusion 13 is small and the cost is increased. Absent.

  It is to be noted that the protrusion 13 is formed on the bracket contact surface 12 of the spring seat 10 so as to increase the thickness thereof, which is most easily turned when the coil spring 14 is compressed and deformed, and corresponds to the pressing force applied region S on the bracket contact surface 12 side. Since the range in which the protrusion 13 is formed can be limited, an increase in the rubber weight in the spring seat 10 associated with the formation of the protrusion 13 is minimized and the amount of increase can be reduced. .

DESCRIPTION OF SYMBOLS 10 Spring seat of suspension for vehicles 10a Cylindrical space 11 Receiving seat surface 12 Bracket contact surface 13 Protruding portion 14 Coil spring 14a Winding end 15 Seat bracket 15a Protruding portion 15b Seat seat surface 16 Cylindrical wall portion 16a Vertical wall surface 16b Vertical wall 16c Guide projection S S Area equivalent to pressing force application

Claims (3)

In a spring seat for a vehicle suspension formed by an elastic member, disposed between a coil spring constituting the vehicle suspension and a spring mounting member to which the coil spring is mounted,
The attachment member contact surface that is in close contact with the spring attachment member when the coil spring is compressed and deformed has a protrusion that protrudes in the sheet pressing direction due to the compression deformation of the coil spring and increases the thickness of the coil spring pressing portion. Spring seat for vehicle suspension.   The protrusion is disposed at least on a spring contact surface with which the coil spring contacts, corresponding to a coil end close contact portion where the coil end of the coil spring is in close contact during compression deformation of the coil spring. The spring seat for a vehicle suspension according to claim 1.   The protruding portion is formed in a ridge shape extending along the coil winding direction across a position corresponding to the vertical wall portion of the spring contact surface with which the coil end of the coil spring positioned and arranged contacts. The spring seat of the suspension for vehicles according to claim 2 characterized by things.

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