JP2017219133A - Balance weight and balance weight parallel body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a balance weight that even when formed into a circular arc shape in a reverse direction between winding-up and wheel-mounting in a state of being arranged in parallel with a double-sided adhesive sheet, can easily follow its change.SOLUTION: A balance weight includes: a front face side inclination surface comprising a metal rectangular parallelepiped, positioned on a front face side of an opposite long side or short side, and gradually inclined to a rear face side toward an end edge; and a rear face side inclination surface positioned on a rear face side of a long side or short side provided with the front face side inclination surface, and gradually inclined to the front face side toward an end edge.SELECTED DRAWING: Figure 3

Description

  TECHNICAL FIELD The present invention relates to a balance weight and a balance weight parallel body, and more particularly to a balance weight and a balance weight parallel body mounted on a wheel rim portion in order to balance the weight when a vehicle wheel rotates.

  Automobile wheels rotate around the axle. At this time, if the weight balance of the wheel is not in an appropriate equilibrium state, vibration is generated as the rotational speed of the wheel increases as the speed increases. Therefore, the weight balance of the wheel is adjusted by finding a light part of the wheel by using an inspection device for inspecting the weight balance of the wheel, and attaching a balance weight of a necessary weight to the corresponding part.

  In addition, such a balance weight has a release sheet pasted on one side of the double-sided pressure-sensitive adhesive sheet, a plurality of balance weights stuck in parallel on the other side of the double-sided pressure-sensitive adhesive sheet, and a balance weight for the required number is used. Thus, the release sheet is peeled off from one side of the double-sided pressure-sensitive adhesive sheet and attached to the wheel rim (see, for example, Patent Document 1).

  Therefore, the balance weight is wound in a roll and stored in a storage box with a large number of balance weights attached in parallel on the other side of the double-sided pressure-sensitive adhesive sheet with a release sheet attached to one side in advance. Depending on the situation, it is pulled out from the storage box (see, for example, Patent Document 2).

JP2013-190094A JP2015-113964A

  However, in such a balance weight, since the release sheet is positioned radially inward of the balance weight in the winding operation when stored in the storage box, adjacent balance weights are mutually connected. They are in a spaced relationship. On the other hand, when the balance weight is affixed to the wheel rim portion, the double-sided pressure-sensitive adhesive sheet is affixed with the double-sided pressure-sensitive adhesive sheet positioned on the outer side in the radial direction of the wheel rim portion.

  Furthermore, when pulling out the balance weight from the storage box, there is a possibility that the remaining balance weights in the wound state are in a complicated positional relationship between adjacent ones. For this reason, there may be a case where the adjacent balance weight is not attached to the double-sided pressure-sensitive adhesive sheet due to various loads such as a load due to the weight of the balance weight itself and a tensile load at the time of pulling out. When further weight load or tensile load is applied in such a state, there arises a problem that the balance weight is peeled off from the double-sided pressure-sensitive adhesive sheet.

  In addition, since there is a relationship of arcing in the opposite direction between the winding and wheel mounting, if a space is provided between adjacent balance weights, the balance weight stored in one storage box There is also a problem that the number of is reduced.

  In order to solve the above-described problems, the present invention can easily change the arc shape in the opposite direction between winding and wheel mounting in a state where it is juxtaposed with the double-sided pressure-sensitive adhesive sheet. An object of the present invention is to provide a balance weight and a balance weight parallel body that can follow the above.

  In order to achieve the above object, the balance weight according to the present invention is composed of a metal rectangular parallelepiped and is a surface that is positioned on the surface side of the opposing long side or short side and is inclined to the back surface side toward the edge. A side inclined surface and a back side inclined surface which is located on the back side of the long side or the short side provided with the surface side inclined surface and which is inclined to the surface side toward the end edge.

  According to this invention, even if it is a case where it is set as the circular arc shape of a reverse direction at the time of winding and the wheel mounting | wearing in the state arranged in parallel with the double-sided adhesive sheet, the change can be tracked easily.

A balance weight parallel object is shown, (A) is a front view of a wheel which stuck a balance weight parallel object, and (B) is an expansion explanatory view of an important section. The balance weight applied to a balance weight parallel body is shown, (A) is a plan view of the balance weight, (B) is a side view of the balance weight, and (C) is a front view of the balance weight. The balance weight parallel body is shown, (A) is a plan view of the balance weight parallel body, and (B) is a front view of the balance weight parallel body. The balance weight parallel body is shown, (A) is explanatory drawing of the state which accommodated the balance weight parallel body in the storage box, (B) is explanatory drawing which shows an example of the state where the load was added to the balance weight parallel body.

  Next, a balance weight and a balance weight parallel body according to an embodiment of the present invention will be described with reference to the drawings. The embodiments described below are preferred specific examples of the balance weight and the balance weight parallel body of the present invention, and may have various technically preferred limitations, but the technical scope of the present invention is: Unless specifically described to limit the present invention, it is not limited to these embodiments. In addition, the constituent elements in the embodiments shown below can be appropriately replaced with existing constituent elements and the like, and various variations including combinations with other existing constituent elements are possible. Therefore, the content of the invention described in the scope of claims is not limited by the description of the embodiment below.

  In FIG. 1, T is a tire constituting a wheel of an automobile, R is a wheel rim portion that is fixed to an axle (not shown) and holds the tire T, 1 is a balance weight parallel body pasted on the inner wall surface of the wheel rim portion R, It is.

  As shown in FIG. 2, the balance weight parallel body 1 is provided with a double-sided adhesive sheet 2 having elasticity, a release sheet 3 attached to one side of the double-sided adhesive sheet 2, and a side-by-side adhesive sheet 2. A plurality of balance weights 10. The balance weight parallel body 1 is affixed to an appropriate position of the wheel rim portion R in a state where the weight is adjusted according to the number of balance weights 10. Therefore, the balance weight parallel body 1 shown in FIG. 1 shows the use state in which the release sheet 3 is peeled off.

  The double-sided pressure-sensitive adhesive sheet 2 is a member that affixes a plurality of balance weights 10 in parallel to the other surface and affixes one surface to the inner peripheral surface of the wheel rim portion R. Thereby, the balance weight parallel body 1 can be affixed on the predetermined position of the inner peripheral surface of the wheel rim portion R. The double-sided pressure-sensitive adhesive sheet 2 is preferably attached to the wheel rim portion R in a state where the direction in which the balance weights 10 are arranged is along the circumferential direction of the wheel rim portion R.

  The double-sided pressure-sensitive adhesive sheet 2 is obtained by imparting adhesiveness (adhesiveness) to both surfaces of a base material made of a material having flexibility (elasticity) such as foamed resin. By having a base material, the double-sided pressure-sensitive adhesive sheet 2 itself has flexibility, and even if the shape of the balance weight 10 and the shape of the wheel rim R do not completely match, the double-sided pressure-sensitive adhesive sheet 2 changes its shape. By absorbing, the adhesion between the balance weight 10 and the wheel rim R can be maintained. Specifically, as the double-sided pressure-sensitive adhesive sheet 2, a material having a cushioning property, for example, a polyurethane foam or a polyethylene foam as a base material coated with a durable acrylic pressure-sensitive adhesive can be used.

  The release sheet 3 is a long strip and is attached to one side of the double-sided pressure-sensitive adhesive sheet 2 so as to be peelable, thereby protecting the adhesiveness on the one side. The release sheet 3 is peeled off when the balance weight parallel body 1 is attached to the wheel rim portion R. The release sheet 3 is wider than the length of the long side of the balance weight 10. The release sheet 3 is made of a material having flexibility (elasticity). Specifically, the release sheet 3 is made of a polyvinyl chloride resin.

  At this time, it is desirable that the release sheet 3 has a lower elongation rate per unit length due to the elasticity of the release sheet 3 than an elongation rate per unit length due to the elasticity of the double-sided pressure-sensitive adhesive sheet 2. That is, as shown in FIG. 4 (A), the long balance weight parallel body 1 is rolled up and stored in the storage box 4, and is drawn out by the length (number) as required. Yes. Therefore, when the balance weight parallel body 1 is pulled out from the storage box 4, it is desirable to maintain the initial state of the adhesive state between the double-sided pressure-sensitive adhesive sheet 2 and the balance weight 4. On the other hand, when the elongation rate per unit length of the release sheet 3 is higher than the elongation rate per unit length of the double-sided pressure-sensitive adhesive sheet 2, the double-sided pressure-sensitive adhesive sheet 2 is excessively stretched due to the tensile load. The attached state between the pressure-sensitive adhesive sheet 2 and the balance weight 4 is likely to be impaired.

  As shown in FIG. 3, the balance weight 10 is formed of a metal rectangular parallelepiped having a front surface 11 with an identification mark, and is positioned on the front side of the opposing long side and toward the end edge 12. 13, a surface-side inclined surface 14 that is inclined to 13, a back-side inclined surface 15 that is positioned on the back surface side of the long side provided with the surface-side inclined surface 14 and that is inclined to the surface 11 toward the edge 12, and an opposing short side And a front end side inclined surface 17 that is inclined toward the back surface 13 toward the end edge (end surface) 16 located on the front surface side. The front-side inclined surface 14 and the back-side inclined surface 15 are formed on long sides facing each other with the other balance weights 10 adjacent to each other. Therefore, the front-side inclined surface 14 and the back-side inclined surface 15 are formed on the short sides when the short sides of the other balance weights 10 adjacent to each other are opposite to each other.

  It is preferable to give an identification display to the surface 11. As the identification display, for example, if a symbol (for example, Fe) indicating the material of the balance weight 10 and a number indicating the weight (for example, 5) are displayed, the balance weight 10 having a desired weight can be easily identified. It can be selected and assembled at a predetermined position of the wheel rim portion R. The method of giving this identification display to the surface 11 of the balance weight 10 is not limited, and can be engraving or printing. At this time, it is preferable that the symbol indicating the material and the number indicating the weight are provided to be 180 ° rotationally symmetrical so that they can be identified when viewed from the short sides of the balance weight 10. Thereby, when sticking the balance weight 10 to the double-sided pressure-sensitive adhesive sheet 2 or sticking the balance weight parallel body 1 to the wheel rim portion R, it is possible to suppress mistaking the front and back directions. it can.

  The edge 12 is a corner shared by the front side inclined surface 14 and the rear side inclined surface 15, and the thickness direction position thereof is displaced from the front side to the rear side. Specifically, as shown in FIG. 3C, the position of the edge 12 in the thickness direction is such that the height of the front side inclined surface 14 is H1, and the height of the rear side inclined surface 15 is H2. The ratio is 5: 3 (H1> H2). At this time, an angle θ1 formed by a line segment including the edge 12 and perpendicular to the surface 11 and the surface-side inclined surface 14 is set to about 15 °. Further, the angle θ2 formed by the line segment including the edge 12 and perpendicular to the back surface 13 and the back surface side inclined surface 15 is about 45 °. Therefore, the angle θ1 formed by the line segment perpendicular to the surface 11 including the edge 12 and the surface-side inclined surface 14 is greater than the angle θ2 formed by the line segment orthogonal to the back surface including the edge 12 and the back-side inclined surface 15. Is also an acute angle (θ1 <θ2).

  The position of the edge 12 in the thickness direction is set to 5: 3 when the surface-side inclined surface height H1 of the surface-side inclined surface 14 is set to the back-side inclined surface height H2 of the back-side inclined surface 15. As will be described later, when the adjacent balance weights 10 are not on the same plane with respect to the back surface 13, for example, when the balance weights 10 are wound in a state where the balance weights 10 are juxtaposed on the double-sided pressure-sensitive adhesive sheet 2 (or This is because the change can be easily followed even when the arc is in the opposite direction between when the wheel is pulled out and when the wheel is mounted. For example, it is possible to easily allow the overlap between the front surface side inclined surface 14 of one adjacent balance weight 10 and the back surface side inclined surface 15 of the other adjacent balance weight 10 contacting each other. If the ratio of the front-side inclined surface height H1 and the back-side inclined surface height H2 is, for example, 5: 5, the inclination angle θ1 and the angle θ2 are the same angle, and therefore, the affixed to the wheel rim R As in the case of the balance weight 10, the balance weights 10 are difficult to overlap each other, for example, the same surface side inclined surface 14 comes into contact. If the ratio is set to 3: 5, the overlapping order of the adjacent balance weights 10 tends to be reversed from the above, and the double-sided pressure-sensitive adhesive sheet 2 is easily peeled off from the back surface 13.

  The edge 16 of the short side which opposes the short side is a wall surface orthogonal to the front surface 11 and the back surface 13 (not inclined). The tip side inclined surface 17 includes an edge 16 and an angle θ2 formed by a line segment perpendicular to the back surface 13 and the tip side inclined surface 17 is about 45 °.

  When the weight of one balance weight 10 is 5 g made of iron, the specific dimensions of the balance weight 10 are as follows: length L = 19.3 mm, width W = 11.6 mm, thickness H = 3.2 mm, Surface side inclined surface angle θ1 = 15 °, surface side inclined surface height H1 = 2.0 mm, back surface side inclined surface height H2 = 1.2 mm, tip side inclined surface angle θ2 = 45 °, tip side inclined surface height H3 = 1.0 mm.

  In such a basic configuration, when the balance weight parallel body 1 according to the present embodiment is attached to the double-sided pressure-sensitive adhesive sheet 2 in parallel with the balance weight 10, the surface-side inclined surface faces the long side facing in the adjacent state. 14 and the back-side inclined surface 15 can be easily changed even in the case of arcuate in the opposite direction between winding and mounting in the state of being parallel to the double-sided pressure-sensitive adhesive sheet 2. There is to follow.

  Specifically, the balance weight parallel body 1 is pasted on the other surface of the double-sided pressure-sensitive adhesive sheet 2 with each of the plurality of balance weights 10 in contact with each other without any gap between the adjacent ones. doing. Accordingly, when the above-mentioned balance weight parallel body 1 of 5 g is accommodated in one storage box 4 shown in FIG. 4, for example, the length of the double-sided pressure-sensitive adhesive sheet 2 and release sheet 3 described above is about 11.6 m.

  And the balance weight parallel body 1 which continues in such a elongate is accommodated in the storage box 4 in a winding state, and the end part of the outermost diameter side is pulled out from the storage box 4, and the desired number The double-sided pressure-sensitive adhesive sheet 2 and the release sheet 3 are cut with the balance weight 10.

  At this time, inside the storage box 4, for example, by pulling out or pushing back the outermost diameter end of the balance weight parallel body 1 from the storage box 4, for example, as shown in FIG. The remaining balance weights 10 in the wound state may be in a complicated positional relationship between adjacent ones. When pulling out the outermost diameter end of the balance weight parallel body 1 from the storage box 4, a pulling action is exerted on the outer peripheral side, but a tightening force is generated on the inner peripheral side. Equivalent effects may occur in part.

  As described above, the adjacent balance weights 10 may come close to each other due to various loads such as a load caused by the drooping caused by the weight of the balance weight 10 and a load caused by the pulling-out operation or the pushing-back operation. Even when the adjacent balance weights 10 are close to each other, the opposing surface-side inclined surface 14 of one adjacent balance weight 10 and the opposing back-side inclined surface 15 of the other adjacent balance weight 10 are However, they can be overlapped so as to come into contact with each other while approaching a low height H2, which is half or less of the total height H. In addition, since the adjacent balance weights 10 overlap with each other at a height of about half or less, it is difficult to exceed the elongation rate of the double-sided pressure-sensitive adhesive sheet 2, and the double-sided pressure-sensitive adhesive sheet 2 is not unexpectedly peeled off from the balance weight 10. , Followability can be ensured.

  On the other hand, when the balance weight parallel body 1 is assembled to the wheel rim portion R, the balance weight parallel body 1 has a curved shape along the curved shape of the inner peripheral surface of the wheel rim portion R, as shown in FIG. In this case, the two adjacent balance weights 10 are formed with the surface-side inclined surfaces 14, so that even if there is no gap between the adjacent balance weights 10, the relative balance of the adjacent balance weights 10 can be easily changed. Can be tolerated. That is, each of the balance weights 10 can be brought into close contact with the curved shape of the inner peripheral surface of the wheel rim portion R. As a result, the balance weight parallel body 1 is well adapted to the wheel rim portion R and can exhibit high adhesiveness.

  In the above description, external dimensions, angles, ratios, and the like can allow tolerances and errors during molding and plastic deformation. Accordingly, when there is a description such as “same”, “equal”, “different”, etc., the sizes and positions are not strict meanings. That is, “same”, “equal”, “different” means that tolerances and errors in design, manufacturing, etc. are allowed, and “substantially the same”, “substantially equal”, “substantially different”. . Here, the tolerance and error mean units in a range not departing from the configuration, operation, and effect of the present invention. Therefore, these dimensions and the like are not strictly applied until each corner of the balance weight is chamfered (R-shaped).

  In addition to the above, the methods according to the above embodiments may be used in appropriate combination. In addition, the present invention is implemented with various modifications within a range not departing from the gist thereof.

  For example, in the above embodiment, the balance weight is shown as 5 g of iron, but other metals or alloys may be used. At this time, for example, the weight may be 10 g which is substantially doubled without changing the thickness or angle, or 5 g and 10 g may be alternately placed in parallel on the double-sided pressure-sensitive adhesive sheet. Furthermore, it is good also as a combination of 2g and 8g in addition to 5g. In this case, 2g and 8g can have a rotational symmetry of 180 ° when marking for identification.

  Further, the balance weight 10 may not have the tip side inclined surface 17 on the short side, or both the front side inclined surface 14 and the back side inclined surface 15 similar to the long side may be provided on the short side. Good.

  As described above, the balance weight and the balance weight parallel body according to the present invention, even in the case of a circular arc shape in the reverse direction at the time of winding and at the time of wheel mounting in a state of being parallel to the double-sided adhesive sheet, It has the effect of being able to easily follow the change, and is useful for all balance weights and parallel balance weights mounted on the wheel rim portion in order to balance the weight when the automobile wheel rotates.

DESCRIPTION OF SYMBOLS 1 Balance weight parallel body 2 Double-sided adhesive sheet 3 Release sheet 10 Balance weight 11 Front surface 12 Edge 13 Back surface 14 Surface side inclined surface 15 Back surface side inclined surface 16 Edge edge 17 Front end side inclined surface

Claims (7)

Consists of a metal cuboid,
A surface-side inclined surface that is located on the surface side of the opposing long side or short side and is inclined to the back surface side toward the edge,
The back side inclined surface which is located on the back side of the long side or short side provided with the front side inclined surface and is inclined toward the surface side toward the edge,
Balance weight with. The end edge of the front surface side inclined surface and the end edge of the back surface side inclined surface are the same, and the position of the end edge is positioned on the back surface side of the front surface side in the thickness direction.
The balance weight according to claim 1. The position in the thickness direction of the edge is 5: 3 when the height of the inclined surface on the front side is the height of the inclined surface on the back side.
The balance weight according to claim 2. The angle formed between the line segment perpendicular to the surface including the edge and the surface-side inclined surface is more acute than the angle formed between the line segment orthogonal to the back surface including the edge and the back-side inclined surface. did,
The balance weight according to any one of claims 1 to 3, wherein the balance weight is provided. The front side inclined surface and the back side inclined surface are formed on long sides facing each other,
The surface side includes a symbol indicating a material and a number indicating a weight, and provided with a 180 ° rotationally symmetric identification portion so as to be identifiable when viewed from the short side,
The balance weight according to any one of claims 1 to 4, wherein the balance weight is provided. A plurality of balance weights according to any one of claims 1 to 5;
A double-sided adhesive sheet having elasticity;
A release sheet attached to one side of the double-sided pressure-sensitive adhesive sheet;
With
The plurality of balance weights are disposed side by side on the other surface of the double-sided pressure-sensitive adhesive sheet, and when the surfaces are located on the same plane, the adjacent edges are in contact with each other.
Balance weight parallel body. The release sheet has elasticity,
The elongation per unit length associated with the elasticity of the release sheet is lower than the elongation per unit length associated with the elasticity of the double-sided pressure-sensitive adhesive sheet,
The balance weight parallel object according to claim 6 characterized by things.

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