JPH10220532A - Balance weight member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a balance weight member to be fitted to a tire wheel of an automobile without using lead or a lead alloy by overlapping a plurality of weight plates made of steel plates to form a weight body, and fastening this weight body to the base end part outer side face of a clip made of spring steel to constitute a balance weight member. SOLUTION: A weight body 3 is formed for a plurality of weight plates. A steel plate is used for these weight plates and punched in circular arc shape so as to be shaped along the circumference of a tire wheel. These weight plates are overlapped in the number corresponding to the preset weight and integrally formed by spot welding or the like as shown by x-marks. The outer side face of a fitting piece 2b of a clip 2 is then brought into contact with the side face center of the weight body 3 and integrally fastened by spot welding to constitute a balance weight member 1. After integrating the clip 2 and the weight body 3, the whole surface of the balance weight member 1 is coated with an epoxy resin coating material and further coated with an acrylic resin coating material thereon to form a rustproof coat.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a balance weight member mainly attached to a tire wheel of an automobile.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 7, a balance weight member of this type is formed by integrally casting a weight body made of lead or a lead alloy and a clip for fixing the weight body to a tire wheel. Was. In order to attach the clip to the tire wheel, a clip is applied to the peripheral edge of the tire wheel, and the clip is driven into the tire wheel, as shown in FIG. 8, to be fixed to the tire wheel with an interference n between the clip and the lead of the weight body. Lead has a high specific gravity, so it is suitable for balance weights. However, since it is a cast product of lead, the dimensional accuracy of the interference n is low, not only is there any concern about fixing to tire wheels, but also because of the recent natural environment conservation There is a demand to restrict the use of lead, and a balance weight member that is friendly to the natural environment has been required.

[0003]

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to form a weight body of a balance weight member with a material replacing lead or a lead alloy.

[0004]

In order to achieve the above object, according to the present invention, a weight body is formed by integrally stacking a plurality of weight plates punched out of a steel plate, and the weight body is formed into a belt-like spring steel. Is fixed to the outer surface of the base end of the clip bent in a U-shape to form a balance weight member. In addition, the weight plate and the entire clip are coated with anti-rust paint.

[0005]

Embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a perspective view of a balance weight member according to the present invention, FIG. 2 is a plan view of a weight plate, and FIG. 3 is a cross-sectional view showing an attached state of the balance weight member. Reference numeral 1 denotes a balance weight member, which comprises a clip 2 and a weight body 3. The clip 2 is formed by bending a band-shaped spring steel plate into a U-shape by press working, and holding the holding portion 2a at one end.
And a mounting piece 2b is formed at the other end. Further, the clip 2 is provided with a removal hook hole 2c. m indicates the interference. Next, the clip 2 is heat-treated, and then a rust-preventive treatment such as a zinc plating chromate treatment or a nickel plating treatment is performed.
The weight main body 3 is composed of a plurality of weight plates 4, and the weight plate 4 is made of a steel plate having a specific gravity of 7.85 or more, and is punched in an arc shape along the circumference of the tire wheel 5, as shown in FIG. Then, the weight plates 4 are stacked by a number corresponding to the weight set in advance, and are integrally formed by spot welding or caulking as shown by the mark x in FIG. further,
At the center of the side of the weight body 3, the mounting piece 2 of the clip 2
b. The outer surface is applied and fixed integrally by spot welding. It may be crimped instead of welding. After the clip 2 and the weight main body 3 are integrated, an epoxy resin paint having good adhesion is applied to the entire surface of the balance weight member 1, and an acrylic resin paint having good weather resistance is further applied thereon, thereby providing a rustproof coating. To form

When the balance weight member 1 is mounted on the tire wheel 5, as shown in FIG. 3, the weight main body 3 is directed toward the center of the tire wheel 5, and the peripheral edge of the tire wheel 5 is tightened by the interference m of the clip 2. And press-fit. Since the clip 2 is formed by bending by press working, there is no variation in the shape such as the size of the interference allowance m, and the clip 2 can be reliably fixed to the peripheral portion of the tire wheel 5. in this way,
A weight body 3 is formed from a weight plate 4 made of a steel plate, and a clip 2 made of a spring steel plate of the same system is fixed to the weight main body 3, thereby forming a local battery caused by dissimilar metal contact between a conventional lead or a lead compound and the spring steel plate. The effect can be avoided, and corrosion of different metals can be prevented. In addition, a large number of balance weight members 1 having different weights depending on the number of weight plates 4 are stocked, and the balance weight members 1 having an appropriate weight are selected and mounted according to the tire wheels 5, so that they can be applied to a wide range of tire wheels 5. it can.

FIG. 4 shows another embodiment.
Is made of aluminum, since the peripheral edge of the tire wheel 5 is raised, the clamping portion 2a of the clip 2 must be
And bend it so as to cover the peripheral edge deeply. Since the mounting piece 2b of the clip 2 in FIG. 4 is curved, the flat weight plate 4 does not adhere to the mounting piece 2b. The weight plates 4 are overlapped, integrated by welding or caulking, and fixed to the mounting piece 2b.

FIG. 5 and FIG. 6 are reference examples. Here, the weight main body 3 is formed of a steel round bar instead of a steel plate. That is, the weight body 3c made of a steel round bar is sandwiched between the curled mounting pieces 2b of the clip 2 and fixed by welding or caulking. In this case, the balance weight is set by changing the length of the steel round bar. In this example, it is only necessary to cut the steel round bar, and the production cost can be reduced.

[0009]

As described above, according to the balance weight member of the present invention, instead of lead or a lead compound, an appropriate number of weight plates made of a steel plate are stacked to form a weight body, and the weight body is connected to the base end of the clip. It adheres to the outside surface.
By preparing several types of balance weight members with different numbers of weight plates and selecting and using those with appropriate weights, balance weight members that do not use lead or lead compounds and do not impair the natural environment are prepared. Can be provided. Furthermore, since the clip is directly clamped to the peripheral edge of the tire wheel, the dimensional accuracy of the interference allowance m is good, and the balance weight member can be securely fixed, and does not come off during running. . In addition, by integrally fixing a weight plate made of a steel plate and a clip made of a spring steel plate, it is possible to prevent contact corrosion which has conventionally occurred between dissimilar metals of lead or a lead compound and spring steel. In combination with the rust-preventive coating that covers the whole, there is an effect that the weather resistance is dramatically improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of a balance weight member of the present invention.

FIG. 2 is a plan view of a weight main body.

FIG. 3 is a cross-sectional view showing an attached state of a balance weight member.

FIG. 4 is a cross-sectional view showing an attached state of another balance weight member.

FIG. 5 is a cross-sectional view showing an attached state of a reference example of a balance weight member.

FIG. 6 is an exploded perspective view of FIG.

FIG. 7 is a perspective view of a conventional balance weight member.

FIG. 8 is a cross-sectional view showing an attached state of a conventional balance weight member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Balance weight member 2 Clip 2a Nipping part 2b Mounting piece 2c Removal hook hole 3 Weight body 4 Weight plate 5 Tire wheel

Claims (2)

[Claims] 1. A weight body formed by integrally stacking a plurality of weight plates punched out of a steel sheet, and the weight body is formed outside a base end portion of a clip formed by bending a band-shaped spring steel into a U-shape. Balance weight member fixed to the side. 2. The balance weight member according to claim 1, wherein the weight plate and the entire clip are coated with a rust-proof coating.