JP2000035087A - Balance weight body for tire wheel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a balance weight body which surely fixed to a tire wheel and prevent the head of a rivet from directly bringing in press contact with the weight. SOLUTION: This balance weight body A which is constituted of a lock plate body 1 attached to a tire wheel H and a weight body 2 fitted and fixed to the lock plate body 1 is provided with an elastic pressure applying part 13 between the lock part 11 of the lock plate body 1 and a weight body fitting part 12, and the elastic pressure applying part 13 pressurizes the weight body 2 against the tire wheel H via the weight body fitting part 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a balance weight body mounted on a tire wheel of an automobile.

[0002]

2. Description of the Related Art In automobiles, balance weights are generally used to guarantee the balance between tire wheels. After assembling the tire into the tire wheel, the weight distribution of the tire wheel and the tire is uniformly adjusted using a wheel balancer. Specifically, by attaching a balance weight having the same weight as the value displayed on the wheel balancer to the peripheral portion of the tire wheel, the right and left balance of the tire wheel becomes uniform.

[0003] The balance weight is composed of a weight and a clip for fixing the weight to the tire wheel.
For example, both are cast and integrally formed. In such a cast balance weight, the clamping force of the clip on the tire wheel tends to be relatively weak, and as a result, the balance weight tends to fall off during traveling. In addition, many steps such as a heat treatment step are required in the manufacturing process, resulting in an increase in cost.

[0004] In view of the above, a balance weight has been developed in which the fixing to the tire wheel (clamping force of the clip) is further ensured and the cost is reduced. For example,
The balance weight member disclosed in Utility Model Registration No. 3046046 includes a band (a so-called clip plate),
It is composed of a weight attached to it and both are fastened by rivets.

One end of the band is bent into a U-shape to form a clip portion, while the other end of the band is provided with a weight attaching portion to which a weight is attached. The weight attachment portion is formed flat by providing a step by bending the band. By providing a step on the belt, the weight mounting portion has a shape slightly floating above the mounting surface of the tire wheel. The balance weight member having such a structure allows the clip portion of the band to have a sufficient clamping force, and can be accurately mounted on the peripheral edge of the tire wheel.

When the band and the weight are fastened, the weight is applied to the outside of the weight attaching portion of the band,
The rivet is inserted through the rivet hole of the weight, and the tip of the rivet is swaged inside the weight mounting portion. In this case, the tip of the rivet is caulked to a height equal to or slightly higher than the height of the step of the band. When the balance weight member configured as described above is mounted on the tire wheel, the tip of the rivet is resiliently pressed against the tire wheel by the weight mounting portion of the belt, so that the mounted balance weight can be stably mounted. There is.

[0007]

However, although the fixed state is maintained by the elastic pressure of the band, for example, when the clip portion is widened and the pinch becomes loose, the band is elastically pressed by the band. The tip of the rivet is separated from the tire wheel. That is, the effect of suppressing the rivet tip against the tire wheel is reduced, and as a result,
A gap is created between the tire wheel and the weight, more specifically, the tip of the rivet, causing the balance weight to shift or fall off.

In this case, since the rivet is directly driven from the side of the weight, the head of the rivet bites into the weight due to the pressing force, which may cause the weight to crack. Further, when the rivet is used for a long period of time and the locking force of the head of the rivet is reduced and a gap is generated between the surface of the weight and the head, there is a disadvantage that the weight rattles to the band.

The present invention has been made in view of the above problems. That is, an object of the present invention is to provide a balance weight body having a structure securely fixed to a tire wheel. A further object is to provide a balance weight body having a structure in which a rivet is not directly pressed against a weight.

[0010]

Means for Solving the Problems The inventors of the present invention have conducted intensive studies on such a problem, and as a result, the weight member has a structure in which the weight member is pressed by a retaining plate (a so-called clip plate). As a result, they have found that the conventional problems can be solved, and the present invention has been completed based on this finding.

That is, the present invention provides (1) a balance weight body comprising a latch plate attached to a tire wheel and a weight fitted and fixed to the latch plate, wherein the latch plate has a latch. The balance weight member is provided with an elastic pressure applying portion between the stop portion and the weight member attaching portion, and presses the weight member against the tire wheel via the weight member attaching portion by the elastic pressure applying portion.

(2) A balance weight body comprising a hook plate attached to the tire wheel and a weight body fitted and fixed to the hook plate by rivets, wherein a hook portion of the hook plate is provided. An elastic pressure applying portion is provided between the weight member attaching portion and the weight member attaching portion, and the elastic force applying portion presses the weight member against the tire wheel via the weight member attaching portion.

Further, (3) a balance weight body comprising a hook plate attached to the tire wheel and a weight body fitted and fixed to the hook plate by rivets, wherein the hook plate is hooked. An elastic pressure applying portion is provided between the portion and the weight body attaching portion, and the elastic pressure applying portion is formed so as to be located in a space formed between the end portion of the tire wheel and the weight body, and the weight is applied by the elastic pressure applying portion. The balance weight body presses the weight body against the tire wheel via the body mounting portion.

Further, (4) the bet is a solid rivet, wherein the tip of the solid rivet is caulked by a relief hole provided in the tire wheel contact portion of the weight. (2) or (3) in the balance weight body.

Further, (5) the bet is a hollow rivet, and the weight (1), (2) or (3) above, in which the tire wheel contact portion side of the weight is caulked and fixed.
In the balance weight body.

Further, (6) the rivet is a driving rivet, wherein the end of the rivet is buried and fixed inside the weight body, and the rivet is balanced in the above (1), (2) or (3). Exists in weight body.

(7) A method of attaching a balance weight body to the tire wheel, wherein the weight body is fixed to the tire wheel by a retaining plate and a rivet, and a weight is applied to the tire wheel by an elastic pressure applying portion of the retaining plate. The present invention resides in a method of attaching a balance weight body in which a hook plate is hung on an end of a tire wheel so as to press the body.

(8) A method of attaching a balance weight body to the tire wheel, wherein the weight body is fixed to the retaining plate with a rivet, and the elastic pressure applying portion of the retaining plate is attached to an end of the tire wheel. And the weight body is positioned in a space between the weight body and the elastic body, so that the weight body is pressed against the tire wheel by the resilient pressure imparting portion so that the locking plate body is hung on the end of the tire wheel. Exist.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a balance weight body according to the present invention will be described below with reference to the drawings. [First Embodiment] FIG. 1 is a perspective view schematically showing a balance weight body A according to a first embodiment of the present invention, and FIG. 2 is a side view thereof. 3 and 4
FIG. 3 is a side view showing a holding plate 1, and FIG.
(A) is a front view and (B) is a bottom view.

As shown in FIGS. 1 and 2, the balance weight body A of the present invention comprises a hook plate 1 and a weight body 2 fitted into the hook plate 1. The weight body 2 is fixed to the latch plate 1 by rivets.

As shown in FIG. 3, the latch plate 1 of the present invention
Are a hooking portion 11 that is sandwiched and hooked between the end portions H1 of the tire wheel, a weight body attaching portion 12 to which the weight body 2 is attached, and an elastic pressure between the weight body attaching portion 12 and the hooking portion 11. Is provided.

When attached to a tire wheel, the elastic pressure applying portion 13 of the retaining plate is formed so as to be located in a space S between the end H1 of the tire wheel and the weight 2 in detail. A repression effect is obtained in the space S (this will be described in detail in FIG. 6). The weight body mounting portion 12 has a mounting hole 14 through which a rivet is inserted. As the material of the latch plate 1, a material having high elasticity such as steel is used, for example.

On the other hand, as shown in FIG. 4 (A), the weight body 2 has a weight plate mounting portion 12 of a hook plate on its upper surface.
A concave portion 21 is provided which is fitted and fixed to the recess. The concave portion 21 is formed to have the same width as the width of the weight body attaching portion 12. Further, the recess 21 of the weight body is provided with a through-hole 22 that corresponds to the mounting hole 14 of the above-mentioned latch plate body and penetrates the weight body 2.

By providing the recesses 21 in the weight body in this way, the weight body 2 is fitted into the hook plate 1, and the weight body is stably fixed and held. Mounting hole 14
There is also an advantage that the and the through hole 22 can be positioned quickly and accurately (see FIG. 1). Also, when driving a rivet, they do not shift from each other. Even after driving, the latch plate 1 is fixed and held in a stable state without displacement.

As shown in FIG. 4 (B), for example, a mortar-shaped relief hole 23 is formed on the bottom surface of the weight body 2, that is, the tire wheel contact portion.
Serves as a clearance for meat when caulking rivets (more on this later). Here, as the material of the weight body 2, aluminum, copper, iron, or the like is used. The balance weight is composed of a hook plate 1 and a weight 2
And are integrally connected with a rivet using the caulking device 6.

FIGS. 5A and 5B are views showing a fastening process between the latch plate 1 and the weight 2 in the rivet of this embodiment, wherein FIG. 5A shows a state before the rivet is driven, and FIG. Indicates a state after the rivet is driven (ie, a crimped state). Here, for reference, caulking device 6
Is composed of a receiving punch 61, a catcher 62 for guiding the rivet downward while holding the rivet from above, and a stem 63 for driving the rivet. Further, a pilot pin 64 which is resiliently supported via a spring is provided inside the receiving punch 61.

On the other hand, the rivet used here is a solid rivet 3 having a solid head and a shaft. A center hole 34 is provided in the shaft portion 32 of the solid rivet, and a protrusion 64T of the pilot pin is inserted. Now, as shown in FIG. 5 (A), the weight body 2 is fitted into the retaining plate body 1, the through holes 22 and the mounting holes 14 are aligned in common, and then the respective holes (14, 22) are aligned. ), The weight 2 and the retaining plate 1 are connected to the pilot pin 6.
4 and supported and placed on a receiving punch. At this time, the pilot pin 64 is made to protrude from the hook plate 1.

On the other hand, the entire solid rivet 3 is lowered together with its head 31 being pressed by the stem 63 and being clamped by the catcher 62. Then, a center hole 34 provided in the shaft portion 32 of the solid rivet is inserted into the protrusion 64T of the pilot pin. Thereafter, the stem 63 descends. The solid rivet 3 is supported and driven by the cooperation of the stem 63 and the pilot pin 64.

Then, as shown in FIG. 5B, the tip 33 of the solid rivet that has been driven is caulked by the pressing force of the stem 63. In this case, as described above, the relief hole 23 provided in the tire wheel abutting portion of the weight body 2 serves as a flesh relief portion at the tip portion 33 of the solid rivet. The tip portion 33 is smoothly and uniformly spread and caulked by the flow of the metal structure of the rivet along the escape hole 23 (so-called “fiber flow”). Therefore, a fastening state with strong crimping force is obtained, and the appearance of the crimped surface is beautiful.

By the way, mounting with rivets
The tip 33 of the solid rivet is inserted and driven from the side of the latch plate. Therefore, the head 31 of the solid rivet comes into pressure contact with the latch plate 1, and the weight 2 does not crack. That is, unlike the above-described conventional example, the head 31 of the rivet does not directly press the weight body 2 and the weight body 2 is not damaged.

FIG. 6 is a sectional view showing a state where the balance weight body A is mounted on the tire wheel H. The balance weight body A according to the present invention sandwiches the balance weight body A between the tire wheel H and the hook plate, and the weight body is applied to the tire wheel H by the elastic pressure generated in the elastic pressure applying portion of the hook plate 1. 2, the hook 11 of the hook plate is hooked to the end H1 of the tire wheel.

As described above, the elastic pressure applying portion 1 of the latch plate body
The repressive effect of No. 3 can be reliably obtained by the presence of the space S between the end portion H1 of the tire wheel and the weight body 2. In other words, the two-dot chain line shown in the figure shows the balance weight body A in the normal state, and in the attached state, the elastic pressure applying portion 13 of the hook plate is deformed by N intervals. .

Due to the elastic pressure due to this deformation, the weight body mounting portion 12 is elastically pressed in the tire wheel direction. Space S
If there is sufficient, the N interval can be made large, and this resilient pressure can also be set large. That is, this space S
Is present, it is possible to apply a greater resilient pressure to the resilient pressure applying unit 13 than in the prior art.

As described above, the weight body 2 is pressed against the tire wheel H via the weight body mounting section 12 by the elastic pressure of the elastic pressure applying section 13 located in the space S.
The attached balance weight body A is securely fixed. Further, even if the engaging portion 11 of the engaging plate body is expanded and the engaging force is weakened, the elasticity effect of the elastic pressure applying portion 13 is always constant in the space S between the end portion H1 of the tire wheel and the weight body 2. As a result, a stable fixed state of the balance weight body A is maintained. That is, even if the locking force on the tire wheel is weakened, the elastic pressure of the elastic pressure applying unit 13 is not affected.

Therefore, the U-curve of the engaging portion 11 may be strongly (ie, narrowed) to improve the engaging force. Furthermore, even if the caulking force of the tip portion 33 of the solid rivet against the weight body 2 becomes weak and rattling occurs in the rivet, the weight body 2 is pressed against the tire wheel by the elastic pressure of the retaining plate body. Therefore, the fixed state of the balance weight body A is always maintained.

FIGS. 7 and 8 show examples in which the resilient pressure applying portion 13 of the retaining plate body is further strengthened to provide the repressive effect. FIG. 7 is a resilient pressure applying portion 1 of the latch plate shown in FIG.
3 is bent further deeply (see FIG. 7A). Also in this case, since the space S between the end portion H1 of the tire wheel and the weight body 2 exists, the elastic pressure applying section 13 can apply a large elastic pressure (see FIG. 7B).

On the other hand, the latch plate 1 shown in FIG.
Is a hooking portion 11, a first elastic pressure applying portion 13A, and a second elastic pressure applying portion 1 that is bent further deeply from the first elastic pressure applying portion 13A.
3B and a weight body attaching portion 12.
As shown in FIG. 8 (B), also in the first and second repression applying sections (13A, 13B), the end H1 of the tire wheel is provided.
A large elastic pressure is applied in the space S between the weight member 2 and the weight member 2.

The balance weight body provided with the resilient pressure applying portion of the retaining plate described with reference to FIGS. 7 and 8 can exert a strong resilient effect. That is, since the weight body 2 is pressed against the tire wheel with a strong pressing force, the fixed state of the balance weight body is reliably maintained.

[Second Embodiment] In a second embodiment, a special rivet, which is an expanding rivet, is used, and a structure in which the rivet is crimped while being buried in the weight body 2 is used. It is an example of the balance weight body which has. FIG. 9 is a side view showing the balance weight body A.

FIGS. 10A and 10B show a rivet in this embodiment. FIG. 10A is a side view, FIG. 10B is a front view, and FIG. 10C is a bottom view as seen from the shaft. As the latch plate 1 here, the one described in the first embodiment (FIG. 3) is used. In addition, the weight body 2 is formed with a concave portion into which the retaining plate body 1 is fitted, but there is no through hole there.

As shown in FIG. 10, the rivet used here is a driving rivet 4 composed of a head 41 and a shaft 42, and is cut in the axial direction from the end of the shaft 42. And the shaft is a pair of legs (42
A, 42B). The legs (42A, 42A)
The end of B) has a tapered surface that expands outward. When the driving rivet 4 is fastened using the driving rivet 4, the leg (42)
A, 42B) is greatly expanded in a substantially figure-eight shape by the guide of the tapered surface, and is buried and fixed inside the weight body 2 (see FIG. 9).

In particular, when the driving rivet 4 is used, the legs (42A, 42B) bite into the weight body 2 as a result, so that the bonding strength with the hook plate 1 can be further increased. . Further, since the position of the leg of the rivet is buried in the weight body 2, the appearance is good. Further, dust and water do not enter from the tire wheel side.

[Third Embodiment] The third embodiment is an example of a balance weight body in which the weight body 2 is fastened to the hook plate body 1 using the hollow rivets 5. FIG.
(A) is a partial cross-sectional side view showing the balance weight body A. FIG. 11B is a partially sectional side view showing the hollow rivet 5 according to the third embodiment. As the latch plate 1 here, the one described in the first embodiment (FIG. 3) is used.

The weight body 2 is formed with a concave portion into which the latch plate 1 is fitted, and is provided with a through hole, but is not provided with an escape hole for the rivet meat. The hollow rivet 5 includes a head portion 51 and a shaft portion 52, and a shaft hole 53 is provided in the shaft portion (see FIG. 11B). When the hollow rivet 5 is fastened using the hollow rivet 5, as shown in FIG. 11A, the shaft hole 53 of the driven hollow rivet is pushed and expanded by the pressure of the stem, and the tire wheel contact portion side of the weight body 2 is caulked. Is fixed.

Also in the second and third embodiments, as described in the first embodiment, the balance weight member attached to the tire wheel is provided by the resilient effect generated by the resilient portion of the retaining plate. Is securely fixed. Also, the heads of the driving rivet and the hollow rivet (41,5)
Since 1) is driven so as to press the hook plate 1 instead of the weight body 2, the weight body 2 does not crack as in the first embodiment.

Although the present invention has been described above, the present invention is not limited only to the embodiment, and it goes without saying that various other modifications can be made without departing from the essence of the present invention. For example, as long as the elastic pressure applying portion is located in the space S and can ensure sufficient elastic pressure, the shape is free. Further, the shape of the weight body may be any shape as long as the weight body is pressed against the tire wheel by the latch plate body, and the shape may be different depending on the tire wheel.

[0047]

As described above, according to the present invention,
The balance weight body attached to the tire wheel is surely fixed, and even if the locking force on the end of the tire wheel becomes weak, the weight body is always resiliently pressed by the locking plate. The body does not fall off. Further, since the head of the rivet is driven directly without being pressed against the weight body, the weight does not crack.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a balance weight body according to a first embodiment of the present invention.

FIG. 2 is a side view of the balance weight body according to the first embodiment.

FIG. 3 is a side view of the latch plate according to the first embodiment.

FIGS. 4A and 4B show a weight body according to the first embodiment, wherein FIG. 4A is a front view and FIG. 4B is a bottom view.

FIGS. 5A and 5B are diagrams showing a fastening process between the latch plate and the weight body in the rivet according to the first embodiment, wherein FIG. 5A shows a state before the rivet is driven, and FIG. ) Shows the state after the rivet is driven.

FIG. 6 is a cross-sectional view showing an attached state of the balance weight body according to the first embodiment.

FIG. 7 shows a different example of the repression unit;
(A) is a side view of a latch plate body, (B) is a cross-sectional view showing a state of attachment of a balance weight body.

FIG. 8 shows another example of the repression unit.
(A) is a side view of a latch plate body, (B) is a cross-sectional view showing a state of attachment of a balance weight body.

FIG. 9 is a partial cross-sectional side view of a balance weight body according to the second embodiment.

FIG. 10 shows a driving rivet according to the second embodiment, (A) is a side view, (B) is a front view,
(C) is a bottom view.

FIGS. 11A and 11B show a balance weight body according to a third embodiment, wherein FIG. 11A is a partial sectional side view, and FIG. 11B is a partial sectional side view of a hollow rivet.

[Explanation of symbols]

 A: Balance weight body 1… Hanging plate body 11… Hanging part 12… Weight body attaching part 13… Resilient pressure applying part 13A… First elastic pressure applying part 13B… Second elastic pressure applying part 14… Mounting hole 2… Weight body 21 ... recess 22 ... through hole 23 ... escape hole 3 ... solid rivet 31 ... head 32 ... shaft part 33 ... tip part 34 ... center hole 4 ... driving rivet 41 ... head 42 ... shaft part 42A ... leg 42B ... leg Part 43 ... End 5 ... Hollow rivet 51 ... Head 52 ... Shaft 53 ... Shaft hole 6 ... Crimping device 61 ... Receiving punch 62 ... Catcher 63 ... Stem 64 ... Pilot pin 64T ... Protrusion H ... Tire wheel H1 ... End Part S ... space

Claims (8)

[Claims] 1. A balance weight body comprising a hanging plate body attached to a tire wheel and a weight body fitted and fixed to the hanging plate body, wherein a hanging part of the hanging plate body and a weight body mounting part are provided. And a weight applying portion provided between the weight member and the weight applying portion to press the weight body against the tire wheel via the weight body attaching portion. 2. A balance weight body comprising a hook plate attached to a tire wheel and a weight body fitted and fixed to said hook plate by rivets, wherein a hook portion of said hook plate and a weight body are provided. A balance weight member, wherein an elastic pressure applying portion is provided between the mounting portion and the weight member, and the weight member is pressed against the tire wheel via the weight member attaching portion by the elastic pressure applying portion. 3. A balance weight body comprising a hook plate attached to a tire wheel and a weight body fitted and fixed to said hook plate by rivets, wherein a hook portion of said hook plate and a weight body are provided. An elastic pressure applying portion is provided between the mounting portion and the elastic member. The elastic pressure applying portion is formed so as to be located in a space formed between the end portion of the tire wheel and the weight body. A weight body, wherein the weight body is pressed against a tire wheel via a tire. 4. The rivet is a solid rivet, wherein the tip of the solid rivet is caulked by a relief hole provided in a tire wheel abutment portion of the weight. Or the balance weight body according to 3. 5. The balance weight body according to claim 1, wherein the rivet is a hollow rivet, and the weight of the weight is fixed to the tire wheel contact portion side. 6. The rivet is a driving rivet,
4. The balance weight body according to claim 1, wherein an end of the rivet is buried and fixed inside the weight body. 7. A method of mounting a balance weight body to a tire wheel, wherein the weight body is fixed to a retaining plate by a rivet, and the weight body is pressed against the tire wheel by an elastic pressure applying portion of the retaining plate. A method for mounting a balance weight body, wherein a hanging plate body is hung on an end of a tire wheel. 8. A method of attaching a balance weight body to a tire wheel, wherein the weight body is fixed to a retaining plate and a rivet, and an elastic pressure applying portion of the retaining plate is connected to a tire wheel end and a weight body. Characterized in that the retaining plate is held at the end of the tire wheel by pressing the weight against the tire wheel by the resilient pressure applying portion. .