JPH0986129A - Spring bracket and spring bracket structure - Google Patents

Abstract

(57) Abstract: A support tool for supporting a leaf spring of a vehicle suspension and the number of parts required for connecting a vehicle body side member and a spring bracket are reduced to prevent an increase in vehicle weight. SOLUTION: A support tool 4 supporting a leaf spring 3 and a vehicle body side member 2 are connected via a spring bracket 5. The inverted frustoconical projection 11 formed on the vehicle body side connecting surface 10 of the spring bracket 5 was fitted into the through hole 19 formed in the vehicle body side member 2 and formed on the support tool side connecting surface 12. The inverted frustoconical projection 13 is fitted into the through hole 26 formed in the support 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spring bracket used for attaching a support for supporting a leaf spring to a vehicle body side member and a support for supporting a leaf spring and a vehicle body side member via the spring bracket. The present invention relates to a spring bracket structure to be connected, and particularly to a structure used for a vehicle suspension.

[0002]

2. Description of the Related Art As shown in FIG. 3, a conventional spring bracket 100 has a vehicle body connecting portion 102 connected to a vehicle body side member 101 and a support tool connection connected to a support tool 104 supporting a leaf spring 103. The L-shaped main body portion 106 including the portion 105, and the substantially triangular plate-shaped rib 1 fixed to the vehicle main body connection portion 105 and the support tool connection portion 103.
07, and bolt holes 108 and 109 are formed in the vehicle body connecting portion 102 and the support tool connecting portion 105. The vehicle body-side member 101 and the spring bracket 100 are connected to each other by the bolt holes 1 formed in the vehicle body-side member 101.
10 and bolt holes 10 formed in the vehicle body connecting portion 102
8 by inserting the bolt 111 and tightening the nut 112 to tighten the vehicle body side member 101 and the vehicle body connecting portion 102, while the connection between the support tool 104 and the spring bracket 100 is performed by the support. The bolt 114 is inserted into the bolt hole 113 formed in the tool 104 and the bolt hole 109 formed in the support tool connection portion 105, and the nut 1
It is performed by tightening 15 and tightening the support tool 104 and the support tool connection portion 105.

[0003]

However, the sling bracket 100 and the vehicle body side member 101 by bolting.
The fastening with the support 104 has a large fastening strength,
There is a problem that the number of parts to be assembled increases and the vehicle weight increases. Therefore, an object of the present invention is to provide a spring bracket and a spring bracket structure in which the fastening strength between the spring racket and the vehicle body connecting portion and the support tool connecting portion is large even if the number of parts to be assembled is reduced.

[0004]

According to a first aspect of the present invention, there is provided a spring bracket having an L-shaped body including a vehicle body connecting portion connected to a vehicle body side member and a support connecting portion connected to a support for supporting a leaf spring. A spring bracket including a character-shaped main body portion, a substantially triangular plate-shaped rib fixed to the vehicle main body connection portion and the support tool connection portion, and a vehicle main body side connection surface of the vehicle main body connection portion and the support tool. It is characterized in that the connecting portion-side connecting surface of the connecting portion is provided with an inverted truncated cone-shaped or inverted truncated pyramid-shaped convex portion. The spring bracket according to a second aspect is characterized in that the spring bracket according to the first aspect is formed by casting. According to a third aspect of the present invention, in the spring bracket structure, a convex portion having an inverted truncated cone shape or an inverted truncated pyramid shape is formed on a support body that supports a vehicle body side connecting surface connected to a vehicle body side member of the spring bracket and a leaf spring. It is characterized in that it is fitted in each recess formed in the vehicle body side member and the support. According to a fourth aspect of the present invention, in the bracket structure according to the third aspect, a through hole is formed instead of the recess.

Since the inverted truncated cone-shaped or inverted truncated pyramid-shaped convex portion formed on the spring bracket and the concave portion or the through hole formed on the vehicle body side member and the supporting member are fitted to each other. The protrusion is unlikely to come off from the recess or the through hole, and the vehicle body side member and the support are firmly connected via the spring bracket.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The slope of the inclined surface when the inverted truncated cone-shaped convex portion and the inverted truncated pyramid-shaped convex portion are expanded in diameter is such that when the convex portion is fitted in the concave portion or the through hole. In order to increase the pull-out resistance of the protrusion, 1 ° with respect to the axial direction of the protrusion.
It is preferable that it is above. The shape of the cross section of the truncated cone-shaped convex portion may be circular or elliptical. The material of the sprinkle bracket is not particularly limited, but it is preferable to form the spring bracket from a casting, and the projection and the recess or the through hole are easily fitted by casting. At the time of casting and encapsulating the vehicle body side member and the support tool with the cast spring bracket, the surface of the vehicle body side member and the support tool may or may not be coated with a self-fluxing alloy.

[0007]

Embodiments of the present invention will be described below with reference to FIGS. A thin U-shaped vehicle body side member 2 welded to the side member 1 and a support tool 4 supporting the leaf spring 3 are connected via a spring bracket 5.

The spring bracket 5 has an L-shaped main body 8 including a vehicle main body connecting portion 6 connected to the vehicle main body side member 2 and a support tool connecting portion 7 connected to the support tool 4, and an L-shaped main body. The vehicle body-side member 2 that is disposed in the center of the portion 8
And a substantially triangular rib 9 fixed to the support tool 4, which is a casting member. The vehicle body-side connecting surface 10 of the vehicle body-side connecting portion 6 is provided with two inverted frustoconical projections 11 having a diameter that increases as the distance from the vehicle-body-side connecting surface 10 increases. On the supporting tool side connecting surface 12 of No. 7, one convex portion 13 having an inverted truncated cone shape whose diameter increases as the distance from the supporting tool side connecting surface 12 increases is provided along the rib 11.

The vehicle body side member 2 includes a pair of arm portions 14 and 1.
5 and a bottom portion 16 connecting both arm portions 14 and 15,
The arms 14 and 15 are welded to the thick U-shaped side member 1 3
The bottom portion 16 has a truncated cone-shaped through hole 19 whose diameter increases from the outer side surface 17 toward the inner side surface 18.

The support tool 4 is composed of a pair of arm portions 20 and 21 and a top plate portion 22 connecting the both arm portions 20 and 21, and a leaf spring 3 is a pin erected between the both arm portions 20 and 21. The top plate portion 22 is rotatably supported by 23 and has a frustoconical through hole 26 whose diameter increases from the outer side surface 24 toward the inner side surface 25.

Next, the spring bracket structure will be described. The vehicle body side member 2 and the support are provided through the outer side surface 17 of the vehicle body side member 2 coated with the self-fluxing alloy, the hole wall surface 27 of the through hole 19, the outer side surface 24 of the support 4 and the hole wall surface 28 of the through hole 26. The tool 4 is cast and wrapped by a cast spring bracket 5. The vehicle body-side member 2 and the vehicle body-side connecting portion 6 have an adhesive force between the vehicle body-side member 2 and the vehicle body-side connecting portion 6 caused by casting, and a through hole 19 formed in the vehicle body-side member 2. The pull-out resistance generated by fitting with the convex portion 11 provided on the vehicle body connecting portion 6 is coupled firmly. Similarly, the support tool 4 and the support tool connecting portion 7 have an adhesive force between the support tool 4 and the support tool connecting portion 7 generated by casting, and the through hole 26 formed in the support tool 4 and the support tool connecting portion 7. The pull-out resistance generated by fitting with the convex portion 13 provided on the portion 7 is coupled firmly. The depth at which the protrusions 11 and 13 are fitted into the through holes 19 and 26 is not particularly limited, and for example, the protrusions 11 and 13 may be fitted so as to fill the through holes 19 and 26. The convex portions 11 and 13 may be fitted so as to fill the half depths of the through holes 19 and 26. In addition, the through holes 19, 2
No. 6 was formed by press molding, and the slope of the inclined surface was 1 ° or more with respect to the axial direction.

[0012]

According to the present invention, the inverted truncated cone shape or the inverted truncated pyramid shape convex portion of the spring bracket and the concave portion or the through hole of the vehicle main body side member and the support member are fitted to each other, so that a bolt or the like is fastened. Members can be omitted, which contributes to reduction of vehicle weight.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a side view showing a conventional spring bracket structure.

[Explanation of symbols]

 2 Vehicle body side member 4 Support tool 5 Spring bracket 6 Vehicle body connection part 7 Support tool connection part 10 Vehicle body side connection surface 11 Convex portion 12 Support tool side connection surface 13 Convex portion 19 Through hole 26 Through hole

Claims (4)

[Claims] 1. An L-shaped main body including a vehicle main body connecting portion connected to a vehicle main body side member and a support connecting portion connected to a support for supporting a leaf spring, the vehicle main body connecting portion, and A spring bracket having a substantially triangular plate-shaped rib fixed to a support tool connecting portion, wherein an inverted circular truncated cone is provided on a vehicle body side connecting surface of the vehicle body connecting section and a support tool side connecting surface of the support tool connecting portion. -Shaped or inverted pyramid-shaped convex portion is provided on the spring bracket. 2. The casting according to claim 1, wherein the casting is made of cast metal.
Spring bracket shown. 3. An inverted truncated cone shape or an inverted truncated pyramid formed on a vehicle body side connection surface connected to a vehicle body side member of a spring bracket and a support tool side connection surface connected to a support tool supporting a leaf spring. A spring bracket structure, in which a convex portion is fitted into each concave portion formed on the vehicle body side member and the support tool. 4. The bracket structure according to claim 3, wherein a through hole is formed instead of the recess.