JPH0335604Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hollow stabilizer provided in a suspension mechanism of a vehicle.

Stabilizers interposed between the vehicle body and the wheels of an automobile are mainly used to suppress rolling of the vehicle body, but there is a tendency for hollow materials to be used to reduce weight.

It is necessary to reinforce the end portion of such a hollow stabilizer that is connected to the wheel-side member. Therefore, conventionally, the ends of the hollow material that makes up the stabilizer body are pushed out and a core material is inserted inside it, or
Alternatively, a method has been used in which a tubular reinforcing member is fitted inside or outside the end of a hollow material to form a multilayered pipe structure, and then forged. Alternatively, a method is used in which a tubular eyepiece is forged and then welded or riveted to the end of the stabilizer body.

However, all of these conventional means have drawbacks such as requiring many manufacturing steps, increasing costs, and increasing weight, which diminishes the weight reduction effect.

The present invention was developed under the above circumstances, and its purpose is to provide a hollow stabilizer that is easy to manufacture, low cost, and can be effectively reduced in weight.

To achieve the above object, the present invention crushes the end of a main body formed from a hollow material to form a flat part, and curves this flat part to form a curved part with a predetermined curvature. The eyelet section, which is formed by cutting a round pipe into rings with a predetermined eyelet width, is overlapped with the curved section, and the eyeball section and the curved section are welded along the axial direction of the eyeball section so that the end surface of the curved section is sealed. It is a hollow stabilizer.

Compared to the conventional examples described above, the process of the stabilizer having the above structure is sufficiently simplified even though it does not require a process such as forging. Then, it is only necessary to press-form the main body made of hollow material to form a flat part and a curved part, and to weld a center part made by cutting an ordinary round pipe to this curved part, cost savings and It can greatly contribute to weight reduction. Since the opening side end face of the curved part is closed as the eyepiece is welded, this welded part can be used as is to prevent moisture from entering the inside of the main body.

An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

In FIG. 1, the main body 1 of the stabilizer is made of a hollow material such as a steel pipe and has a substantially U-shape as a whole. A base portion 2 is provided at the intermediate portion of the main body 1 to be connected to the vehicle body side of the automobile.
Further, at both ends of the main body 1, as shown in FIGS. 2 and 3, a flat part 3 having a width W formed by crushing the end part of the main body 1 in the diametrical direction, and this flat part are provided. A curved portion 4 having a predetermined curvature of 1/D is formed by curving a portion near the tip of 3 in the thickness direction.

The eyepiece part 5 is made by cutting a normal round pipe with an annular cross section such as a steel pipe whose outer diameter is approximately equal to the above D into a predetermined length L, and is welded while being overlapped on the above curved part 4. ing. In other words, this eye-catching part 5
As shown in FIG.
Welding is carried out along the axial direction of the eyeball portion 5 at certain locations. The length of each welded portion 6 is shorter than the width W of the flat portion 3. Therefore, both ends of the welded part 6 and the center part 5
A non-welded portion having an appropriate length l (approximately 6 to 15% of the width W of the flat portion) is provided between both end faces of the flat portion. By welding in this way, it is possible to prevent welding burrs from protruding near the end face of the eyeball part 5,
High dimensional accuracy and good appearance can be obtained even if deburring work is omitted.

The stabilizer configured as described above is used by connecting the base portion 2 to the vehicle body side and the eye portion 5 to the wheel side by well-known means.

According to the above configuration, the flat portion 3 and the curved portion 4 provided at the end of the main body 1 can be simply and easily formed by press working. Also, the highlight part 5
By cutting commercially available round pipes into a predetermined width, a large number of products of stable quality can be manufactured at once. Therefore, compared to the conventional example, the manufacturing process and jigs are significantly simplified, and compared to forging, etc., machining energy is required less, the cost is significantly reduced, and the weight is also reduced. can contribute.

Furthermore, since the end of the main body 1, that is, the end on the opening side of the curved part 4, is closed by one welding part 6 when the eyepiece part 5 is welded, the main body 1 made of a hollow material
It is possible to prevent moisture etc. from entering into the inside of the steel sheet, thereby preventing rusting and a decrease in durability caused by this.

Note that the present invention is not limited to the above embodiments. For example, as shown in FIG. 4, a curved portion 8 extending approximately half the circumference of the eyeball portion 5 may be formed. In addition, various modifications or applications are possible within the scope of the gist of the present invention.

As mentioned above, the present invention simplifies the manufacturing process, contributes to cost reduction and weight reduction, and uses the welded part of the eye to prevent moisture from entering the inside of the main body. can.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing one embodiment of the present invention;
3 and 3 are side and front views showing enlarged main parts of the same embodiment, and FIG. 4 is a side view showing a modification of the present invention. 1... Main body, 2... Base, 3... Flattened part, 4
...Curved part, 5... Eyepiece part, 6... Welded part, 8...
...curved section.

Claims (1)

[Claims for Utility Model Registration] (1) A hollow stabilizer having a main body formed of a hollow material and having a base and an end connected to the vehicle body side and the wheel side of an automobile, respectively, wherein the end of the main body is Squeeze to form a flattened part, and curve this flattened part to form a curved part with a predetermined curvature, and overlap the eyelet part formed by cutting a round pipe to a predetermined eyewidth on the curved part. A hollow stabilizer characterized in that the eye and the curved portion are welded along the axial direction of the eye so that the end face of the curved portion is sealed. (2) The hollow stabilizer according to claim 1, wherein the length of the welded portion of the eyelet portion is made shorter than the width of the flattened portion so that both ends of the welded portion are located inside of both end surfaces of the eyelet portion. .