JP2011037297A - Spring seat of vehicular suspension - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem that feeding in a rolling up direction on the opposite side to a side at which a regulation convex section is formed cannot be prevented by extension deformation of a circular plane section, however, feeding in the rolling up direction at the side in which the regulation convex section of the circular plane section is formed can be prevented by providing the regulation convex section during swinging of an arm member. <P>SOLUTION: A regulation section 12b which regulates rolling up of a reception seat surface 12 in contact with a coil spring 13 during swinging of a wheel side support member is projectively provided at a position, opposing to a line end reception section 12a at which a winding end 13a of the coil spring 13 is positioned, of the circular reception seat surface 12 for receiving the coil spring 13 in contact with a lower end surface of the coil spring 13. During swinging of the wheel side support member, the line end reception section 12a side and the regulation section 12b side of the reception seat surface 12 are integrally connected by a center step section 11 so as to follow the movement of the line end reception section 12a of the regulation section 12b. <P>COPYRIGHT: (C)2011,JPO&amp;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 mounted on a wheel support member to which a coil spring constituting the vehicle suspension is attached and serves as a seat for the coil spring.

  Conventionally, an arm member for supporting a wheel is attached to a body (vehicle body) side member of an automobile so as to be swingable around a predetermined swing center axis, and the swing end side is connected to the body side via a shock absorber and a coil spring. 2. Description of the Related Art In a connected automobile suspension device, a spring seat is known which is interposed at a coil spring attachment site and elastically connects an arm member to a body side member.

  As such, for example, a “spring seat rubber” placed on a seat of a trailing arm of a torsion beam suspension mechanism of an axle suspension system employed in a rear wheel suspension of an automobile (see Patent Document 1) There is. A lower end portion of a coil spring disposed between the trailing arm and the vehicle body side member is placed and supported on the spring seat rubber so that the trailing arm swings elastically with respect to the body side member. Connected as possible.

  The “spring seat rubber” has an annular plate portion disposed between the axially opposed surfaces of the arm member of the suspension mechanism and the coil spring, and at least the arm member swings with respect to the outer peripheral edge portion of the annular plate portion. At the farthest position from the central axis, a restriction convex portion that protrudes to the outer peripheral side of the end face of the coil spring that contacts the annular plate portion is integrally formed. As a result, when the arm member swings, if the spring seat rubber is going to be displaced in the direction of turning up, the restricting projection comes into contact with the outer peripheral surface of the coil spring, so that the spring seat rubber is further turned up. Feeding is blocked.

  Therefore, even if the arm member is repeatedly largely oscillated and displaced around the oscillating center axis, the spring seat rubber is prevented from coming off between the arm member and the coil spring due to turning up.

JP 2003-118341 A

  However, in the conventional “spring seat rubber” (see Patent Document 1), the annular plate portion provided with the restricting convex portion is formed in a ring shape having a hole in the center of the plate portion. Was easy to deform. In other words, when the arm member swings, by providing the restricting convex portion, the feed of the annular plate portion to the side where the restricting convex portion is formed is prevented from being turned up. On the opposite side of the side on which the restricting convex portion is formed, it is impossible to prevent the feed in the turning-up direction.

  An object of the present invention is to provide a spring seat for a vehicle suspension that can prevent the coil spring contact surface from being turned up when a wheel side support member connected to a vehicle body side member via a coil spring is swung. That is.

  In order to achieve the above object, a spring seat for a vehicle suspension according to the present invention is formed of an elastic body and is disposed between a coil spring constituting the vehicle suspension and a wheel side support member of the coil spring. A regulating portion protrudes from the annular receiving seat surface portion that contacts the lower end surface of the coil spring and faces the wire end receiving portion where the winding end of the coil spring is located. A seating surface coupling portion that integrally couples the line end receiving portion side and the regulating portion side of the surface portion is formed.

In the spring seat of the vehicle suspension according to another aspect of the present invention, the seating surface connecting portion is integrated with the receiving seating surface portion to close the inner space of the receiving seating surface portion, and the seating surface connecting portion and the surrounding seating It is formed in a disk shape consisting of a surface portion.
In the spring seat of the suspension for a vehicle according to another aspect of the present invention, the line end receiving portion is located on the side close to the swing center of the wheel side support member, and the restricting portion is the swing of the wheel side support member. Located on the far side from the center.
In the spring seat for a vehicle suspension according to another aspect of the present invention, at least one gap portion is provided in the receiving seat surface portion.

  According to the spring seat of the vehicle suspension according to the present invention, the elastic seat is disposed between the coil spring constituting the vehicle suspension and the wheel-side support member of the coil spring. A restricting portion protrudes from the ring-shaped receiving seat surface portion that contacts the end surface and receives the coil spring at a position facing the wire end receiving portion where the winding end of the coil spring is located. Since the seat surface connecting part that integrally connects the part side and the restricting part side is formed, when the wheel side support member connected to the vehicle body side member via the coil spring swings, the line end of the receiving seat surface part The receiving portion side and the regulating portion side can be interlocked to prevent the coil spring contact surface from being turned up.

Further, in the spring seat of the vehicle suspension described above, the seating surface connecting portion is integrated with the receiving seating surface portion to close the inner space of the receiving seating surface portion, and is formed in a disk shape including the seating surface connecting portion and the surrounding receiving seating surface portion. As a result, when the wheel side support member connected to the vehicle body side member via the coil spring is swung, the wire end receiving portion side and the regulating portion side of the receiving seat surface portion are interlocked, and the coil spring contact surface is turned up. The rise can be prevented.
Further, in the spring seat of the vehicle suspension, by providing at least one gap in the receiving seat surface portion, even if water enters the receiving seat surface, it can be discharged and does not accumulate.

It is a perspective view which shows the mounting state of the spring seat of the suspension for vehicles which concerns on one embodiment of this invention. It is sectional drawing which follows the AA line of FIG. It is a top view of the spring seat of FIG. It is a top view which shows the other example of the spring seat of the suspension for vehicles which concerns on this invention.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view showing a mounting state of a spring seat of a vehicle suspension according to an embodiment of the present invention. FIG. 2 is a cross-sectional view taken along the line AA in FIG. FIG. 3 is a plan view of the spring seat of FIG.
As shown in FIGS. 1 to 3, the spring seat 10 of the suspension for a vehicle is made of an elastic material such as natural rubber (NR), for example, and is substantially disc-shaped by a plate-like elastic body having a thickness of 3 mm, for example. The central step portion 11 is formed so as to protrude slightly at the center portion and the protruding end surface is formed in a circular flat surface shape, and the receiving seat surface portion 12 is formed on the outer periphery of the central step portion 11.

In the vehicle suspension using the spring seat 10, a wheel side support member (arm member) for supporting a wheel is attached to a vehicle body side member so as to be swingable around a predetermined swing center axis, and the swing end side is mounted. It has the structure connected with the vehicle body side via the shock absorber and the coil spring, and the coil spring is independently mounted at a position different from the shock absorber.
Examples of such a vehicle suspension include a trailing arm type suspension and a torsion beam type suspension.

The coil spring 13 constituting the vehicle suspension has an upper end side (not shown) abutting against a vehicle body side member (not shown) via an upper seat (not shown) made of an elastic member, and a lower end side made of an elastic member. It is in contact with the bracket 14 of the wheel side support member via the lower seat, that is, the spring seat 10 (see FIG. 2), and is incorporated between the vehicle body side member and the wheel side support member. At this time, the lower end side of the coil spring 13 that contacts the bracket 14 is positioned and fixed to the bracket 14 of the wheel side support member by inserting the upper end convex portion 14a of the bracket 14 into the lower end internal space (see FIG. 2). .
That is, the spring seat 10 is disposed between the coil spring 13 and the wheel side support member of the coil spring 13.

  The central step portion 11 of the spring seat 10 has an inner shape corresponding to the outer shape of the upper end convex portion 14 a of the bracket 14, and the central step portion 11 of the spring seat 10 placed on the bracket 14 has a bracket 14. The upper end convex portion 14a enters the fitted state (see FIG. 2). Further, the receiving seat surface portion 12 of the spring seat 10 is formed in an annular shape in plan view corresponding to the shape of the lower end surface of the coil spring 13, and the central step portion 11 is inserted into the lower end internal space of the coil spring 13 ( 2), the coil spring 13 is received in contact with the lower end surface of the coil spring 13.

The receiving seat surface portion 12 has a winding end (coil end) 13a of the coil spring 13, that is, a wire end receiving portion 12a where the cut end surface portion is located as the lowest portion, and gradually rises in accordance with the winding state. It is formed by a surface (see FIG. 1) and has a restricting portion 12b at a position facing the line end receiving portion 12a.
The spring seat 10 is placed on the bracket 14, and the wire end receiving portion 12 a is placed on the side close to the swing center of the wheel side support member (for example, on the front side of the vehicle body with respect to the bracket 14). The restricting portion 12b is positioned on the side farther from the center of swinging of the wheel side support member.

  The restricting portion 12b is positioned substantially at the diameter of the receiving seat surface portion 12 with respect to the wire end receiving portion 12a, outside the outer peripheral surface of the coil spring 13, and protrudes above the receiving seat surface portion 12, that is, on the coil spring 13 side. Along the outer peripheral surface of the coil spring 13, the ridge having a length located between about 90 ° to about 180 ° in the plane center angle of the receiving seat surface portion 12 is also shaped like a breakwater, such as natural rubber (NR). It is formed integrally with the receiving seat surface portion 12 by an elastic body made of an elastic material (see FIG. 3).

  By providing the restricting portion 12b, the wheel-side support member to which the spring seat 10 is attached via the bracket 14 is centered around a predetermined swing center axis located in front of the vehicle body from the wheel-side support member. The bottom surface of the receiving seat surface 12 of the spring seat 10 placed on the bracket 14 is prevented from turning up so as to separate from the bracket 14 when swinging in the vertical direction of the vehicle body (see the arrow in FIG. 2). Even if you can turn up and turn up, you can minimize turning up.

  That is, when the bracket 14 of the wheel side support member swings in the vertical direction of the vehicle body (see the arrow in FIG. 2), the coil spring 13 compresses and expands along with the swing, so that the lower end surface of the coil spring 13 is in pressure contact. A pressing force from the coil spring 13 is applied to the receiving seat surface portion 12 of the seat 10 to try to feed the receiving seat surface portion 12 inward, but the receiving seat surface portion 12 having increased rigidity by forming the restricting portion 12b. This is because the pressing force from the coil spring 13 is received, and the resistance force against the inward feeding of the spring seat 10 that causes turning up is increased.

  Similarly, in the wire end receiving portion 12a, when the bracket 14 swings in the vertical direction of the vehicle body, the pressing force from the coil spring 13 is applied to try to feed the receiving seat surface portion 12 of the spring seat 10 outward. However, the receiving seat surface portion 12 provided with the line end receiving portion 12a is integrated with the central step portion 11 to form the spring seat 10 made of one disk-like plate body together with the central step portion 11. The restricting portion 12b provided on the receiving seat surface portion 12 together with the line end receiving portion 12a also follows the movement of the line end receiving portion 12a.

  Therefore, when a force is applied to the line end receiving portion 12a to send it out of the spring seat 10 (see arrow a in FIG. 2), the restricting portion 12b is moved along the line end receiving portion 12a. It tries to be pulled toward the receiving portion 12a (see FIG. 2, arrow b), and acts on the entire spring seat 10. For this reason, the resistance force to the outward feeding of the wire end receiving portion 12a that causes the turning up is increased, and the bottom surface of the line end receiving portion 12a of the spring seat 10 that is the contact surface of the coil spring 13 is removed from the bracket 14. It is possible to prevent turning up so as to separate, and even if it turns up, it can reduce turning up as much as possible.

  In this way, the spring seat 10 is formed in a disk shape in which the central step portion 11 and the receiving seat surface portion 12 are integrated, so that the central step portion 11 can be connected to the wire end receiving portion 12a when the wheel side support member is swung. It functions as a seating surface connecting portion that integrally connects the receiving end surface portion 12 to the line end receiving portion 12a side and the restricting portion 12b side so that the restricting portion 12b follows the movement. That is, the seating surface connecting portion (the central step portion 11) is integrated with the receiving seating surface portion 12 to close the inner space of the receiving seating surface portion 12, and the spring seat 10 is configured such that the seating surface connecting portion and the surrounding seating surface portion. It is formed in a disk shape consisting of 12.

Further, in the receiving seat surface portion 12, as a countermeasure when water enters the receiving seat surface portion 12, a void portion (not shown) is effectively provided as a drain for receiving the entering water and discharging it to the outside of the seat surface portion 12. One or a plurality of discharge positions are provided, for example, at the lowest part of the receiving seat surface portion 12. Accordingly, even if water enters the receiving seat surface portion 12, it can be discharged and water does not accumulate in the receiving seat surface portion 12.
The spring seat 10 is formed in a disk shape in which the central step portion 11 and the receiving seat portion 12 are integrated. However, the present invention is not limited to this, and a bridging portion may be provided instead of the central step portion 11. .

  FIG. 4 is a plan view showing another example of the spring seat of the vehicle suspension according to the present invention. As shown in FIG. 4, the suspension seat 20 is not provided with the center step portion 11, and the receiving seating surface portion 12 on the line end receiving portion 12 a side where the lower end portion 13 a of the coil spring 13 is disposed, and the coil spring 13 includes a bridging portion 21 that is connected to the restricting portion 12b projecting along the outer peripheral surface of the belt 13 and spans a substantially diameter position of the flat surface of the receiving seat surface portion 12. The same as the sheet 10.

The suspension sheet 20 has a bridging portion 21 laid across the central space of the annular receiving seat surface portion 12. The bridging portion 21 is, for example, a plate-like elastic body made of an elastic material such as natural rubber (NR). And is integrally coupled to the line end receiving portion 12a and the restricting portion 12b to which both ends thereof are coupled. Thereby, the control part 12b follows the movement of the line end receiving part 12a.
In other words, the bridging portion 21 connects the line end receiving portion 12a side and the regulating portion 12b side of the receiving seat surface portion 12 so that the regulating portion 12b follows the movement of the line end receiving portion 12a when the wheel side support member swings. It functions as a seating surface connecting portion that connects together.

  For this reason, when the bracket 14 of the wheel side support member swings in the vertical direction of the vehicle body, the coil spring 13 is compressed and expanded along with the swing, whereby the coil spring 13 is brought into contact with the spring seat 10 with which the lower end surface of the coil spring 13 is pressed. Even if a pressing force is applied, the resistance force to the outside of the wire end receiving portion 12a that causes the turning up is increased, and the wire end receiving portion 12a of the spring seat 10 that is the contact surface of the coil spring 13 is increased. It is possible to prevent the bottom surface from turning up so as to be separated from the bracket 14, and even if the bottom is turned up, the turning up can be reduced as much as possible.

DESCRIPTION OF SYMBOLS 10,20 Spring seat of vehicle suspension 11 Central step part 12 Receiving seat surface part 12a Line end receiving part 12b Restriction part 13 Coil spring 13a Winding end 14 Bracket 14a Upper end convex part 21 Bridging part

Claims (4)

In a spring seat for a vehicle suspension formed of an elastic body, disposed between a coil spring constituting the vehicle suspension and a wheel side support member of the coil spring,
An annular receiving seat surface portion that contacts the lower end surface of the coil spring and receives the coil spring;
A restricting portion protruding at a position facing a wire end receiving portion where a winding end of the coil spring of the receiving seat surface portion is located;
A suspension seat for a vehicle suspension, comprising: a seat surface connecting portion that integrally connects the receiving end surface portion with the line end receiving portion side and the regulating portion side.   The seating surface connecting portion is integrated with the receiving seating surface portion to close an inner space of the receiving seating surface portion, and is formed in a disk shape including the seating surface connecting portion and the surrounding receiving seating surface portion. Item 2. A spring seat for a vehicle suspension according to Item 1.   The line end receiving portion is positioned on a side closer to the swing center of the wheel side support member, and the restriction portion is positioned on a side far from the swing center of the wheel side support member. The spring seat of the suspension for vehicles as described.   The suspension seat for a vehicle according to any one of claims 1 to 3, wherein the receiving seat surface portion has at least one gap portion.

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