JP5842291B2 - Wheel balance weight - Google Patents

Description

  The present invention relates to a wheel balance weight that is mounted on a rim flange of a wheel of an automobile or the like to balance the wheel.

  A wheel of an automobile or the like rotates around an axle shaft during traveling, but if the mass balance in the circumferential direction of the wheel is not achieved, vibration occurs with increasing traveling speed, which impairs traveling stability. For this reason, a wheel balance weight is driven in and mounted on the rim flange in the circumferential region of the wheel with a small mass to balance the wheel.

  Conventionally, the wheel balance weight is formed of a lead member having a weight (a large specific gravity) instead of a volume. That is, as shown in FIG. 8, the balance weight main body 10 is attached to the inner peripheral surface F1 of the rim flange F, the engaging clip 11 is attached to the outer peripheral surface F2 of the rim flange F, and the balance weight main body 10 is attached to the clip 11. In the state where the end of the rim flange F is sandwiched, the hammer is driven by a hammer or the like (see, for example, Patent Document 1).

  In this case, since the lead member of the balance weight body 10 is a soft member, it is deformed along the form of the wheel W by the driving. Due to this deformation, “familiarity” with the wheel W is generated, and it is difficult to come off after the mounting, and the wheel W is not damaged even when driven. Furthermore, even if the diameter of the wheel W is different, the balance weight main body 10 bends along the arc surfaces having different diameters, so that it is not necessary to prepare the balance weight main body 10 every time the wheel W has a different diameter.

  However, the balance weight main body 10 of the lead member has problems such as the occurrence of pollution due to lead damage, and lead is expensive, so the manufacturing cost is high. In view of this, a balance weight main body 10 of a wheel balance weight that uses a metal member other than lead (hereinafter referred to as an iron member or the like) has been proposed (for example, see Patent Document 2).

Utility Model Registration No. 3066654 JP 09-49549 A

However, since the iron member used as the weight body is not as soft as the lead member, it does not deform along the form of the wheel W when it is driven into the rim flange F, and it adapts. There is no such thing. Therefore, there is a risk of disengagement after mounting. In addition, if the driving is forcibly performed, the wheel W is damaged, which is particularly a problem in the case of an aluminum wheel.
Moreover, since balance weights, such as an iron member, are hard, there also exists a subject which will damage the wheel W by vibration in a contact part with the wheel W even after mounting | wearing.

  The present invention was devised in view of such conventional problems. Even if the balance weight main body is formed of a metal member such as an iron member which is not as flexible as the lead member, the balance weight main body is formed. Just by attaching the resin cap to the wheel, you can easily get familiar with the wheel, and it will not damage the wheel even if you drive it in, and it will not damage the contact surface with the wheel after vibration The purpose is to provide a wheel balance weight that is hard to come off.

In order to achieve the above-described object, a wheel balance weight according to the present invention is a wheel balance weight that is attached to a rim flange of a wheel in order to balance the wheel of a vehicle, and includes a balance weight body and the balance weight body. A clip for attaching to the rim flange of the wheel,
A concave portion for attaching the mounting piece of the clip is cut out in the vertical direction of the balance weight main body on the arc surface on the mounting surface side with respect to the rim flange, which is a substantially central portion of the balance weight main body. The clip has a mounting piece attached to the recess of the balance weight main body, and a cylindrical resin cap for avoiding direct contact with the wheel is fitted to both ends of the balance weight main body. It is characterized by being mounted.

  With this configuration, since the resin cap is attached to the balance weight main body, the balance weight main body does not come into direct contact with the wheel during and after being attached to the wheel, and the resin cap always comes into contact. Therefore, familiarity with the wheel is obtained by the elasticity of this resin cap, the wheel is not damaged even if driven, and the contact surface with the wheel is not damaged by vibration after being attached to the wheel. Because it is fitted with the wheel, there is no risk of coming off the wheel.

  Further, the resin cap of the wheel balance weight according to the present invention is characterized in that the inner diameter is a cylindrical shape that is substantially the same as or slightly smaller than the outer diameter of the balance weight body.

With this configuration, the resin cap can be fitted and attached to the balance weight body. The resin cap has a cylindrical shape with an inner diameter that is substantially the same as or slightly smaller than the outer diameter of the balance weight body, so that it can be fitted to the balance weight body, and the inner diameter is larger than the outer diameter of the balance weight body. When mounted on the balance weight body, the possibility of loosening and falling off increases, and if the inner diameter is too smaller than the outer diameter of the balance weight body, it becomes difficult to mount the balance weight body. If the inner diameter is almost the same as or slightly smaller than the outer diameter of the balance weight body, the resin cap is elastic, so the inner diameter can be expanded and attached to the balance weight body. Therefore, it is preferable without dropping off.
Further, the inner diameter of the cylindrical resin cap may be slightly larger than the outer diameter of the balance weight main body to facilitate the fitting, and after the fitting, the inner diameter of the cylindrical resin cap may be heat shrunk to be in close contact with the balance weight main body.

In addition, it is preferable that the resin cap can be fitted and attached to the balance weight body in this manner because it can be applied to an already-made balance weight body.
For example, when the balance weight body is attached to the rim flange of the wheel, after attaching the wheel balance weight to the rim flange, a simple work of attaching a resin cap to a part of the balance weight body ( both ends of the balance weight body ) It is possible to reliably avoid the balance weight from coming into direct contact with the wheel. Therefore, damage due to the balance weight of the wheel can be avoided reliably. Further, as compared with a case where a wheel balance weight in which a resin coating is integrally provided in advance on the balance weight main body is used, a resin coating process and a resin coating apparatus are not required, so that the product cost can be reduced.
Also, with this configuration, the resin cap can be reliably and quickly attached (fitted) to a part of the balance weight body ( both ends of the balance weight body ).

  According to the present invention, the fit with the wheel can be obtained simply by attaching (fitting) the resin cap to the weight main body, and the wheel is not damaged even when driven against the rim flange. After mounting, the contact surface with the wheel is not damaged by vibration, and because it fits with the wheel, it can be made difficult to come off.

It is a perspective view before the resin cap mounting | wearing of the wheel balance weight by embodiment of this invention. It is a perspective view after the resin cap mounting | wearing of the wheel balance weight by embodiment of this invention. It is a longitudinal cross-sectional view of the principal part of the wheel balance weight shown in FIG. FIG. 2 is a perspective view of a state where the wheel balance weight shown in FIG. 1 is attached to a wheel. It is a perspective view before the resin cap mounting | wearing of the wheel balance weight which is a reference example of this invention. FIG. 6 is a perspective view of the wheel balance weight shown in FIG. 5 after mounting a resin cap. It is a longitudinal cross-sectional view of the principal part of the wheel balance weight shown in FIG. It is a partial perspective view which shows the attachment structure of the wheel balance weight with respect to the conventional rim flange.

  Hereinafter, a wheel balance weight according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a wheel balance weight according to an embodiment of the present invention before the resin cap is mounted, FIG. 2 is a perspective view of the wheel balance weight according to an embodiment of the present invention after the resin cap is mounted, and FIG. It is sectional drawing of the principal part of the wheel balance weight shown in FIG.

A wheel balance weight A shown in FIG. 1 includes a balance weight main body 1, a clip 3, and a resin cap 4. A recess 2 that is cut out in the vertical direction of the balance weight main body 1 is provided in a substantially central portion of the balance weight main body 1 and on an arc surface 1a on the clip mounting surface side.
A clip 3 having a width that fits in the recess 2 is attached to the recess 2. The clip 3 includes a flat substantially rectangular attachment piece 3a and a substantially semicircular locking piece 3b continuous with the attachment piece 3a.

  The mounting pieces 3a are brought into contact with the flat mounting surface 2a of the recess 2 and are coupled to each other by spot welding. By this spot welding, a concave portion P is formed on one surface of the balance weight main body 1 (the surface opposite to the clip mounting surface side), and a convex portion Q is formed on the corresponding clip mounting surface side. Yes. In addition, since this convex part Q exists in the said recess 2, it does not protrude to the clip attachment surface side of the balance weight main body 1. FIG. For this reason, as will be described later, there is no interference with the rim flange F.

  Furthermore, when the clip 3 is attached to the rim flange of the wheel W, the upper end (tip) edge of the locking piece 3b has a shape that can fit between the tire T and the rim flange F. The locking piece 3b It is slightly curved so as to cover the flange F. The clip 3 is made of the same material as that of the balance weight body 1, here using an iron member, and has high rigidity. For this reason, the wheel balance weight A having such a configuration is prepared in advance according to the shape and size of the wheel W, and the clip 3 is driven into the rim flange F and connected. At this time, the wheel balance weight A to be mounted is of a weight necessary for balancing the wheel. The required weight may be one or more.

  Also, a thin and cylindrical resin cap 4 as shown in FIG. 1 is closely fitted to both ends of the balance weight main body 1 as shown in FIG. The resin cap 4 is closely fitted to the balance weight main body 1 by, for example, setting the inner diameter of the cylindrical resin cap 4 to be slightly smaller than the outer diameter of the balance weight main body 1 and expanding the inner diameter by the elasticity of the resin cap 4 to balance. A resin cap that is fitted to the weight main body 1 and restored by elastic force to be in close contact with the balance weight main body 1 or a resin cap that is slightly larger than the balance weight main body 1 is subjected to a method such as thermal contraction of the resin cap 4 itself after mounting. . The whole wheel balance weight A fitted with the resin cap 4 is shown in FIG.

Therefore, when the wheel balance weight A having such a configuration is mounted on the rim flange F of the wheel W as described above, the balance weight main body 1 always passes through the resin cap 4 as shown in FIG. The tire T is attached so as to fit the rim flange F to which the tire T is attached. Even if the clip 3 is attached to the rim flange F by hitting it, it is absorbed by the elasticity of the resin cap 4, and the clip 3 is prevented from contacting the rim flange F with a large frictional force, and the rim flange F is damaged. There is nothing. Furthermore, since the balance weight body 1 does not directly contact the wheel W and always contacts the wheel W via the resin cap 4, the wheel balance weight A is running after the wheel W is mounted on the rim flange F. The vibration of the wheel does not damage the contact surface with the wheel.
As a result, it is possible to avoid the occurrence of rust on a part of the wheel W due to the attachment of scratches and the deterioration of appearance. Further, even if the vehicle is subjected to a large vibration during traveling, there is no fear that the wheel balance weight A is easily detached from the rim flange F.

5 to 7 show a reference example of the wheel balance weight of the present invention, which is consistent with a part of the scope of claim 1. The wheel balance weight B according to this reference example is different from the wheel balance weight A in the shape of the balance weight main body and the resin cap, and the other parts are the same as the wheel balance weight A. Are described with the same reference numerals.
5 is a perspective view of the wheel balance weight B before the resin cap is mounted, FIG. 6 is a perspective view of the wheel balance weight B after the resin cap is mounted, and FIG. 7 is a main portion of the wheel balance weight B shown in FIG. FIG.
A wheel balance weight B shown in FIG. 1 includes a balance weight main body 1, a clip 3, and a resin cap 8. The balance weight main body 1 of the wheel balance weight A has a long rod shape, and the resin cap 4 is fitted from both ends, but the balance weight main body 1 of the wheel balance weight B of this example is short. The resin cap 8 has a shape corresponding to the rectangular parallelepiped, and is fitted to the balance weight main body 1 from the lower end.

In this reference example, the balance weight main body 1 is formed in a short rectangular parallelepiped shape with an iron member as shown in FIG. 5, has a cross-sectional shape according to the form of the rim flange, and further has a predetermined length along the arc surface of the rim flange. The arc shape.
A clip 3 having the same width as that of the balance weight body 1 is spot-welded to the arc surface inside the balance weight body 1 in the same manner as described above. That is, the clip 3 is composed of a flat substantially rectangular mounting piece 3a and a substantially semicircular locking piece 3b continuous to the mounting piece 3a. It is firmly fixed by welding.

  Further, the upper end (tip) edge of the locking piece 3b is formed to be able to fit between the tire and the rim flange when the clip 3 is attached to the rim flange of the wheel, and the locking piece 3b covers the rim flange. Is so curved. The clip 3 is formed using an iron member as a material and has high rigidity. For this reason, the wheel balance weight B having such a configuration is prepared in advance according to the wheel shape and size, and the clip 3 is struck into the rim flange F and attached. At this time, the wheel balance weight B to be mounted is of a weight necessary for balancing the wheel. The required weight may be one or more.

  Also, as shown in FIGS. 5 to 6, the lower half of the wheel balance weight B, that is, the mounting piece 3a and the balance weight main body 1 are substantially thin and cylindrical resin from the lower side. A cap 8 is tightly fitted. The resin cap 8 has a cylindrical shape corresponding to the balance weight main body 1 and has an upper opening as shown in FIG. 5, and is fitted to the balance weight main body 1 from the lower end. Therefore, the resin cap 8 has a rectangular parallelepiped cylindrical shape having a length, height, and diameter (corresponding to the width) corresponding to the length, height, and width (thickness) of the balance weight main body 1. The close fitting of the resin cap 8 to the balance weight main body 1 is the same as in the above embodiment. For example, the size of the resin cap 8 is substantially the same as the size of the balance weight main body 1, but is slightly smaller in shape. The inner diameter of the resin cap 8 is enlarged by the elasticity of the resin cap 8, and is fitted to the balance weight main body 1. Alternatively, the resin cap 8 that is slightly larger than the balance weight main body 1 is formed by a method such as thermally shrinking the resin cap 8 itself after mounting. The entire wheel balance weight B fitted with the resin cap 8 is shown in FIG.

Accordingly, when the wheel balance weight B having such a configuration is mounted on the rim flange F of the wheel W as described above, the balance weight body 1 always has the rim flange to which the tire T is attached via the resin cap 8. Attached to fit F.
For this reason, even if the clip 3 is mounted on the rim flange F by being struck, it is absorbed by the elasticity of the resin cap 8, and the clip 3 is prevented from coming into contact with the rim flange F with a large frictional force. It won't stick. Further, since the balance weight body 1 does not directly contact the wheel W, and the wheel balance weight B always contacts the wheel W via the resin cap 8, the wheel balance weight B is running after the wheel W is mounted on the rim flange F. The vibration of the wheel does not damage the contact surface with the wheel. Therefore, it is possible to avoid the occurrence of rust on a part of the wheel W due to the attachment of scratches and the deterioration of appearance. Further, even if the vehicle is subjected to a large vibration during traveling, there is no fear that the wheel balance weight B will come off from the rim flange F.

In the above description, the case where the resin caps 4 and 8 are attached to the balance weight body 1 of the iron member has been described. However, the same applies to the case where the resin caps 4 and 8 are attached to the balance weight body 1 of the lead member. An effect is obtained.
Further, in the above description, the balance weight body 1 and the clip 3 are integrated. However, the resin caps 4 and 8 can be attached to the wheel balance weight in which the individual balance weight body 1 and the clip 3 are assembled. The same effect can be obtained.

  Thus, the wheel balance weights A and B are attached to the rim flange F of the wheel W in order to balance the wheel of the vehicle. The balance weight body 1 and the balance weight body 1 are attached to the rim flange F of the wheel W. The balance weight body 1 is provided with resin caps 4 and 8 for avoiding direct contact with the wheel W.

  Therefore, when the balance weight main body 1 is attached to the rim flange F of the wheel W, the resin caps 4 and 8 can be attached to the balance weight main body 1 (this may be attached in advance). When the wheel balance weights A and B are attached to F, it is possible to reliably avoid the balance weight main body 1 from directly contacting the wheel W. Therefore, damage due to the balance weight main body 1 of the wheel W can be reliably avoided.

DESCRIPTION OF SYMBOLS 1 Balance weight main body 1a Arc surface 2 Notch 3 Clip 3a Mounting piece 3b Locking piece 4 Resin cap 8 Resin cap F Rim flange W Wheel

Claims (2)

A wheel balance weight attached to the rim flange of the wheel to balance the wheel of the vehicle,
A balance weight body and a clip for attaching the balance weight body to the rim flange of the wheel;
A concave portion for attaching the mounting piece of the clip is cut out in the vertical direction of the balance weight main body on the arc surface on the mounting surface side with respect to the rim flange, which is a substantially central portion of the balance weight main body. The clip has its mounting piece attached to the recess of the balance weight body,
A wheel balance weight, wherein a cylindrical resin cap for avoiding direct contact with the wheel is fitted and attached to both ends of the balance weight body .   2. The wheel balance weight according to claim 1, wherein the resin cap has a cylindrical shape having an inner diameter substantially equal to or slightly smaller than an outer diameter of the balance weight body.

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