JP2008208933A - Balance weight mounting tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a balance weight mounting tool capable of applying a detachable balance weight to the rim inner peripheral face of an automobile wheel while preventing the meandering thereof. <P>SOLUTION: A non-magnetic mounting shell body 2 has a plurality of fitting holes 15 lined along a curved mounting face 10, and hard magnets 3 are fitted into the fitting holes 15. The detachable balance weight 35 is attracted on the curved mounting face 10. The force of releasing an attracted condition is produced when detaching the detachable balance weight 35 pasted to the rim inner peripheral face 31, to hold the hard magnets 3 in the fitting holes 15 without displacing or removing them from the mounting shell body 2. This prevents the meandering of the detachable balance weight 35 when applied to the rim inner peripheral face 31. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a balance weight attaching jig used for attaching a balance weight for equalizing the weight balance of an automobile wheel to a rim inner peripheral surface of the automobile wheel.

  A balance weight is attached to the inner peripheral surface of the rim in order to equalize the weight balance of the automobile wheel with a predetermined tire mounted. As the balance weight, a lead rectangular plate having a relatively low rigidity is used, and is attached to a predetermined position by a double-sided tape. And the operation | work which attaches a balance weight to a rim inner peripheral surface was normally performed by the operator's manual work. However, in recent years, for environmental reasons, it has been replaced from lead-made ones to iron-made ones. Since this iron product is more rigid than lead, if a similar rectangular plate is used, it will be bent and pasted to follow the inner peripheral surface of the automobile wheel. Pressure is required, increasing the number of processes and special equipment. For this reason, as the balance weight made of iron, a unit weight (hereinafter referred to as a separation-type balance weight) integrated by pasting a predetermined number of unit weights set to a predetermined weight on a double-sided tape is used. ing.

  By the way, the separation type balance weight in which a predetermined number of unit weights are integrated on a double-sided tape is connected only by the double-sided tape. As a result, each unit weight cannot be arranged in a straight line and meanders when being attached to the inner peripheral surface of the rim. Further, since it is difficult for the operator to support all the unit weights uniformly, the double-sided tape is liable to be lifted or wrinkled, and the unit weight attaching force of the part is reduced. Furthermore, in the state where only the double-sided tape is connected, each unit weight is unstable, so it takes time to attach the rim to the inner peripheral surface, and the time required for the operation becomes longer, resulting in lower work efficiency. There was also a problem of doing.

For such a problem, for example, Patent Document 1 proposes an attachment jig for attaching a separation-type balance weight in which a predetermined number of unit weights are arranged. Such a configuration is provided by curving the rubber plate magnet so as to face the inner peripheral surface of the rim, and by urging the balance receiving plate that moves inward and outward of the rubber plate magnet, With the separation type balance weight placed on the receiving plate and magnetically attached to the rubber plate magnet, the balance receiving plate is retracted inward by pressing against the inner peripheral surface of the rim, and the separation type balance weight is moved to the rim. Proposals have been made to press the inner peripheral surface for pasting. The rubber plate magnet is attached to the outside of the balance weight holding cushion, and exhibits a buffering action when pressed against the inner peripheral surface of the rim.
JP 2001-343048 A

  By the way, in the mounting jig for mounting the separation type balance weight of the conventional configuration described above, the rubber plate magnet is arranged on the outermost surface so as to directly magnetize the separation type balance weight. And this rubber plate magnet is adhere | attached on the outer surface of the balance weight presser cushion adhere | attached along the circular-arc shaped plate vertical wall of a predetermined diameter. This conventional mounting jig removes the release paper of the double-sided tape in a state where the separation-type balance weight is directly attached to the rubber plate magnet, and presses the balance weight against the inner peripheral surface of the rim to remove it. Therefore, the external force such as the peeling force for peeling the release paper of the double-sided tape and the force against the magnetic force generated when the separation-type balance weight is attached to the inner peripheral surface of the rim and then released from the balance weight, It will act on the adhesive which adhere | attached this rubber plate magnet and the balance weight press cushion, and the adhesive which adhere | attached this balance weight press cushion and the plate vertical wall. Then, by repeatedly using the mounting jig, the adhesive is likely to deteriorate due to an external force acting on the adhesive. If there is a part where the adhesive has been partially peeled off, when the release paper is peeled off or separated from the separation-type balance weight attached to the inner peripheral surface of the rim, the unit weight of that part will shift or float, etc. As a result, the balance weight meanders and the double-sided tape wrinkles or floats. Moreover, in the part where it does not adhere partially, the rubber plate magnet is pulled while being magnetically attached to the separation type balance weight when it is detached from the separation type balance weight attached to the inner peripheral surface of the rim, so that the adhesive is further peeled off. The area expands. Even when the direction of moving the mounting jig is changed when leaving the separation-type balance weight, the above-described problems similarly occur because a tensile force and a shearing force are generated in the adhesive.

  The rubber plate magnet is generally configured by mixing a rubber material and ferrite magnet powder, and has a lower magnetic force than a hard magnet. Therefore, the magnetic force of the rubber plate magnet is weaker than the adhesive force of the double-sided tape that bonds the separation-type balance weight and the inner peripheral surface of the rim, and it is relatively easy to remove after attaching the separation-type balance weight to the inner surface of the rim. You can get. However, when the separation type balance weight is magnetically attached to the rubber plate magnet, when the release paper of the double-sided tape is peeled off, it is difficult to remove the release paper due to the weak magnetic force of the rubber plate magnet, or the unit weight is misaligned. It causes meandering and the like, and there is a problem that workability is poor.

  Furthermore, the conventional mounting jig for attaching the separation-type balance weight can easily attach the separation-type balance weight, so that it can be used not only by a dedicated manufacturer for assembling the wheel, but also by wheel dealers and gas stations. It has the advantage that it can be used. By the way, in a wheel shop or a gas station, there are few cases where the environment of the work place or the jig storage place is prepared, and it may reach a relatively high temperature in summer. The rubber plate magnet described above has not only weak magnetic force but also low resistance to temperature. Therefore, when the rubber plate magnet is continuously used in a high temperature environment, the resin is likely to be melted and stick to the object to be adsorbed. That is, the mounting jig using the rubber plate magnet requires sufficient care for use in a high temperature environment.

  The present invention aims to solve the above-mentioned problems, and can easily and appropriately peel the release paper of the double-sided tape in a state in which the separation type balance weight is magnetically attached, and is easy after being attached to the inner peripheral surface of the rim. And the balance weight attachment jig | tool which can remove | deviate from a balance weight appropriately is proposed.

  The present invention is for affixing a separation-type balance weight in which a predetermined number of unit weights having a predetermined weight are arranged on a tape to an inner peripheral surface of a rim of an automobile wheel, A non-magnetic mounting outer shell having a convex curved mounting surface facing the surface and a plurality of insertion holes arranged along the curved mounting surface, and protruding from the curved mounting surface of the mounting outer shell A plurality of hard magnets fitted in the respective insertion holes so that the separation type balance weight is magnetically attached to the curved mounting surface by the magnetic force of the hard magnet. This is a balance weight mounting jig.

  In such a configuration, insertion holes are arranged in the mounting outer shell body, and hard magnets are respectively inserted into the insertion holes, and a plurality of hard magnets are arranged along the curved mounting surface. Yes. That is, the hard magnet is held by the insertion hole and is difficult to come off from the mounting outer shell. Therefore, as described above, when the separation-type balance weight in which the unit weights are arranged on the double-sided tape is magnetically attached, the peeling force generated when the release paper of the double-sided tape is peeled off, and the separation-type balance Even when a force is applied to cancel the magnetized state when the weight is attached to the inner peripheral surface of the rim and removed, the hard magnet can be held in the fitted hole. In other words, when a hard magnet is fitted into the insertion hole with an adhesive or the like, it can be prevented that the peeling force or the force to release the magnetic force acts on the adhesive, so that it can be used repeatedly over a relatively long period of time. Even if it is excellent in the effect which prevents that an adhesive agent deteriorates and peels. Further, since the hard magnet is properly fitted and held in the fitting hole, the release paper of the double-sided tape is easily peeled off, and is easily detached after the separation type balance weight is pressure-bonded to the inner peripheral surface of the rim. Therefore, the work efficiency of the work of peeling the release paper and the work of attaching the separation type balance weight to the inner peripheral surface of the rim is improved.

  Here, the insertion hole is in a direction in which the release paper is peeled off or a direction in which the release hole is moved away from the separation type balance weight (for example, a direction orthogonal to the curved mounting surface or a width direction of the curved mounting surface). By providing the hard magnet so as to be in direct contact and support, it is possible to further prevent the hard magnet from being displaced or detached from the fitted state.

  In the configuration of the present invention, a plurality of hard magnets are arranged side by side along the bending direction of the curved mounting surface. Since this hard magnet has a stronger magnetic force than the rubber plate magnet of the conventional configuration described above, the release paper of the double-sided tape can be peeled off relatively easily while the separation type balance weight is magnetically attached. obtain. And a hard magnet is set so that the magnetic force in a curved attachment surface may become weak compared with the force (for example, adhesive force of an above-mentioned double-sided tape) which a separate type | mold balance weight was affixed on the rim inner peripheral surface. Thus, the work of peeling the release paper with the separation type balance weight magnetically attached to the curved mounting surface, and the work of removing the separation type balance weight with the separation type balance weight attached to the inner peripheral surface of the rim Can be carried out easily and stably.

  Here, the strength of the magnetic force on the curved mounting surface can be adjusted by the distance between the curved mounting surface and the hard magnet since the mounting shell is non-magnetic. This makes it possible to easily and precisely determine the strength of the magnetic force on the curved mounting surface, and also to change the magnetic force on the curved mounting surface by changing the interval (without changing the type of magnet). is there. Furthermore, even if a hard magnet having a different magnetic force is used, the desired magnetic force can be adjusted by setting the interval. Therefore, for example, even when there is a change that increases the adhesive force of the double-sided tape and it is necessary to change the magnetic force on the curved mounting surface, the magnetic force can be adjusted to the corresponding magnetic force by changing the interval. Can do. In addition, the strength of the magnetic force on the curved mounting surface can of course be adjusted by using a hard magnet having a different magnetic force.

  In addition, as a space | interval of a curved attachment surface and a hard magnet here, the space | interval of all the hard magnets may be made equal, and a space | interval can also be made different for every hard magnet.

  Further, the hard magnet is superior in temperature characteristics as compared with the rubber plate magnet having the conventional configuration described above. Therefore, as described above, even when used or stored in a high temperature environment, blocking like a rubber plate magnet does not occur. The balance weight mounting jig of the present invention can be used easily without requiring consideration for blocking, even when used repeatedly in a high temperature environment in summer at a wheel dealer or a gas station.

  In the present invention, a hard magnet is fitted into the insertion hole, and therefore, the hard magnet having a curved surface is disposed instead of the rubber plate magnet having the conventional configuration described above. Here, for example, when a curved surface corresponding to the curved mounting surface is formed on the hard magnet, it is necessary to mold by cutting or from a dedicated die having the curved surface. However, in the case of the former cutting, cracking and chipping are likely to occur, and in the case of using the latter dedicated mold, a dedicated mold corresponding to the shape of the curved surface is required, and the processing cost is extremely high. There is a problem that it becomes expensive. By simply replacing the hard magnet with the rubber plate magnet having the above-described conventional configuration, a mounting jig capable of easily attaching the separation-type balance weight can be manufactured at a relatively low cost and used in various work places. Contrary to the requirement to use.

  On the other hand, the mounting outer shell can be obtained by processing a nonmagnetic material into a desired shape by cutting or molding. And as this nonmagnetic material, a resin material can be used suitably. This is because a softer material than the wheel material (steel, aluminum alloy, etc.) is used so that the outer peripheral surface of the rim of the automobile wheel does not damage the mounting outer shell when it contacts the inner peripheral surface of the automobile wheel. . Further, as the resin material, hard plastic or rubber resin is preferably used.

  Further, in the present invention, since the hard magnet is arranged so as not to protrude from the curved mounting surface, when the separation-type balance weight is magnetically attached, the separation-type balance weight is not damaged, and the curved attachment is performed. It can be held in a form following the surface. Since the unit weights can be magnetized while being held in a straight line, the unit weights can be attached to the inner peripheral surface of the rim in the magnetized state. That is, it is possible to suppress problems such as the balance weight being meandered and attached, or the double-sided tape being wrinkled or floated, resulting in a decrease in adhesive strength, as compared with the method of attaching manually. Furthermore, the time required for the work process can be reduced and the workability can be improved as compared with the case of the method of attaching manually.

  In addition, the hard magnet is disposed so that the curved mounting surface side has the same magnetic pole in a state where the hard magnet is fitted in the insertion hole, so that the lines of magnetic force thereof come out of the curved mounting surface. Thereby, it is easy to adjust the strength of the magnetic force on the curved mounting surface.

  The insertion hole can be formed by various configurations such as a hole opened on the curved mounting surface and a hole drilled along the thickness direction of the curved mounting surface. When the insertion hole is formed so as to open in the curved mounting surface, it is necessary to make the hard magnet shorter than the depth of the insertion hole so that the magnet does not protrude from the curved mounting surface.

  In the balance weight mounting jig described above, a plurality of insertion holes formed in the mounting outer shell body are formed so as to open at the back side portion of the curved mounting surface and not penetrate the curved mounting surface. Proposed.

  In such a configuration, the hard magnet fitted into the fitting hole is blocked by the surface layer portion of the curved mounting surface. Therefore, as described above, in the case where the separation type balance weight is attached to the inner peripheral surface of the rim and detached, the hard magnet is not detached from the mounting shell while being magnetically attached to the balance weight. This is because, for example, when a hard magnet is fixed to the insertion hole with an adhesive, the adhesive strength of the adhesive is lower than the force of attaching the separation type balance weight to the inner peripheral surface of the rim due to secular change, etc. However, the hard magnet does not leave the mounting outer shell and remains in a state of being magnetically attached to the balance weight.

  And since the hard magnet is fitted into the insertion hole, when the separation type balance weight is attached to the inner peripheral surface of the rim and removed, the mounting jig is pulled in the wheel inner direction, or the wheel Even if the mounting jig is moved in the axial direction, the hard magnet can be held in the insertion hole. Therefore, in the case where the hard magnet is bonded to the insertion hole with an adhesive, the effect of suppressing a decrease in the adhesive strength of the adhesive is even higher. The same effect can be achieved with respect to the peeling force generated when the release paper of the double-sided tape is peeled off while the separation type balance weight with unit weights arranged on the double-sided tape is magnetized on the curved mounting surface. Can do.

  As described above, the present invention can adjust the strength of the magnetic force on the curved mounting surface by changing the distance between the hard magnet and the curved mounting surface. That is, in this configuration, the distance between the curved mounting surface and the tip of the curved magnet mounting surface side of the hard magnet in a state where the hard magnet is fitted in the insertion hole is set so that the magnetic force on the curved mounting surface has a desired strength. adjust. Here, it can be set as the structure which preset the space | interval of the deepest part of an insertion hole, and a curved attachment surface, and embed a hard magnet to the deepest part of an insertion hole. Or you may make it set the arrangement | positioning position of the curve attachment surface side front-end | tip part of the hard magnet in the state fitted to the insertion hole. In the latter case, a configuration in which the hard magnet is embedded after embedding a medium having a predetermined thickness in the insertion hole is preferable so that the hard magnet can be accurately positioned at the tip position.

  In the balance weight mounting jig described above, a configuration is proposed in which the mounting outer shell is provided with a plurality of insertion holes radially along the normal direction of the curved mounting surface.

  In such a configuration, the surface of the separation-type balance weight that is magnetically attached to the curved mounting surface and the depth direction of the insertion hole are orthogonal to each other, so that the direction of the lines of magnetic force emitted from the curved mounting surface is uniform over the curved mounting surface. This makes it easier to adjust the magnetic force on the curved mounting surface. In particular, when all the hard magnets have the curved mounting surface side as one magnetic pole and the back side of the curved mounting surface has the other magnetic pole, the direction of the lines of magnetic force emitted from the curved mounting surface can be made uniform. Therefore, the strength of the magnetic force on the curved mounting surface can be easily adjusted, and the separation type balance weight can be more effectively magnetically attached.

  In the balance weight mounting jig described above, a configuration is proposed in which a plurality of magnets are provided such that the magnetic forces on both sides are stronger than the central portion of the curved mounting surface.

  As described above, in the separation-type balance weight in which the unit weights are arranged on the double-sided tape, the release paper of the double-sided tape is usually peeled off from either side end. Therefore, the release paper of the double-sided tape can be peeled off more easily by strongly magnetizing both sides of the separation type balance weight. Therefore, the workability of the work of peeling off the release paper is further improved.

  In addition, as this structure, the structure which used the hard magnet arrange | positioned on both sides of a mounting outer shell body with a strong magnetic force compared with what is arrange | positioned in a center part, or a hard magnet in a center part. It can be set as the structure which set the space | interval with a curved attachment surface wider than both sides. Alternatively, it is possible to reduce the number of hard magnets disposed in the central portion from both sides. In any of these configurations, since a plurality of hard magnets are arranged along the curved mounting surface, it can be easily achieved.

  As described above, the non-magnetic mounting outer shell has a plurality of insertion holes arranged along a convex curved mounting surface, and a hard magnet is fitted into the insertion hole. Since the separation type balance weight is magnetically attached to the curved mounting surface, since the hard magnet is held in the mounting outer shell by the insertion hole, the separation type balance weight is attached to the inner peripheral surface of the rim. It is possible to prevent the hard magnet from being displaced or detached from the mounting outer shell body by a force that eliminates the magnetically attached state that occurs when the magnet is detached. Therefore, it is possible to prevent wrinkles and floats from occurring on the tape in which the separation type balance weights are arranged, and the separation type balance weight can be correctly and linearly attached to a desired position without meandering. In addition, since the hard magnet has a stronger magnetic force than the conventional rubber plate magnet, the magnetic force on the curved mounting surface can be easily adjusted to the desired strength by changing the distance from the curved mounting surface. You can get. Therefore, when a separation type balance weight in which unit weights are arranged on a double-sided tape is affixed, the separation paper of the double-sided tape is peeled off, and the separation type balance weight is attached to the inner peripheral surface of the rim and then detached. The work efficiency with the work to be performed can be improved, and the work time can be shortened. In addition, since it does not block when used in a high temperature environment like a rubber plate magnet, it can be used as a jig for easily attaching a separate balance weight, and it can perform the desired function without being affected by the temperature environment at a gas station. Can be used.

  In the configuration in which a plurality of insertion holes formed in the mounting outer shell are formed so as to open at the back side portion of the curved mounting surface and not penetrate the curved mounting surface, for example, a hard magnet is used as the insertion hole. Even if the holding force (for example, adhesive force) decreases, when the separation type balance weight is attached to the inner peripheral surface of the rim and detached, the hard magnet is detached from the mounting shell and is magnetically attached to the separation type balance weight. It will not remain in the state. And since the effect of holding the hard magnet without slipping or coming off in the insertion hole is further excellent, the tape is not wrinkled or floated in the work of peeling the release paper or the work of removing from the separation type balance weight. The effect of preventing the occurrence and the effect of preventing the separation type balance weight from meandering are further improved.

  In the configuration in which the mounting outer shell is provided with a plurality of insertion holes radially along the normal direction of the curved mounting surface, the direction of the magnetic force lines coming out from the curved mounting surface can be made uniform. The magnetic force on the curved surface can be easily set, and the separation type balance weight can be magnetically attached efficiently.

  In the configuration in which a plurality of magnets are provided so that the magnetic force on both sides is stronger than the central portion of the curved mounting surface, when unit weights are arranged on the double-sided tape, The release paper can be peeled off more easily from the side edges, and the workability is improved.

Embodiments of the present invention will be described with reference to the accompanying drawings.
As the separation-type balance weight 35 to be attached to the rim inner peripheral surface 31 (see FIG. 4) of the automobile wheel 30, the release paper 38 on one surface of the double-sided tape 37 is peeled off as shown in FIG. A predetermined number (for example, 5 g) of iron unit weights 36 having a preset weight (for example, 5 g) are arranged in a row. Here, the weight of the separation-type balance weight 35 is determined according to the number of unit weights 36. In this state, the release paper 38 is still attached to the lower surface of the double-sided tape 37 to which the unit weight 36 is attached. This double-sided tape 37 is a tape according to the present invention.

  FIG. 1 shows a balance weight mounting jig 1 according to the present invention. The balance weight mounting jig 1 includes a mounting outer shell 2 having a predetermined thickness having a curved mounting surface 10 and a plurality of hard magnets respectively fitted into a plurality of insertion holes 15 arranged in the mounting outer shell 2. 3 and a back cover 4 that is detachably attached to the back side surface 11 of the curved mounting surface 10 of the mounting outer shell 2.

  In the first embodiment, the mounting outer shell 2 described above is formed of a polyethylene resin that is a hard plastic. A curved mounting surface 10 is formed on one side surface of the mounting outer shell 2 with substantially the same curvature as the rim inner peripheral surface 31 to which the separation type balance weight 35 is attached. In the mounting outer shell 2, the insertion holes 15 described above are arranged in parallel and densely from the back side surface 11 toward the curved mounting surface 10. Here, the insertion hole 15 is formed such that it opens at the back side surface 11 and does not penetrate the curved mounting surface 10, and the deepest part (portion closest to the curved mounting surface 10) is along the curved mounting surface 10. .

  The mounting outer shell 2 has a predetermined dimension in which the arc length of the curved mounting surface 10 is longer than that of the separation type balance weight 35 described above, and the thickness thereof is larger than the width of the separation type balance weight 35. It is set so as to make a predetermined dimension that becomes longer. That is, the curved mounting surface 10 is larger than the surface area of the separation type balance weight 35. Here, in the first embodiment, the arc length of the curved mounting surface 10 is set so that the length of a line segment (so-called chord) connecting both ends of the arc is equal to the length of the separation-type balance weight 35. is doing. Further, both insertion holes 15 provided at both ends of the mounting outer shell 2 are formed so as to face unit weights 36 forming both ends of the separation type balance weight 35. As a result, when the hard magnets 3 are respectively fitted in the respective insertion holes 15 as will be described later, the separation type balance weight 35 can be stably magnetically attached to both ends of the curved mounting surface 10.

  Further, the mounting outer shell 2 is formed with a protruding curved edge portion 7 that protrudes outward along the upper side of the curved mounting surface 10. The protruding curved edge portion 7 is set such that the protruding width from the curved mounting surface 10 is shorter than the plate thickness of the separation type balance weight 35. As will be described later, when the separation-type balance weight 35 is magnetically attached to the curved mounting surface 10, the separation-type balance weight 35 is brought into contact with the lower edge of the protruding curved edge portion 7 by contacting the separation-type balance weight 35. The balance weight 35 can be magnetized linearly.

  The mounting outer shell 2 is fitted with the hard magnets 3 embedded in the respective insertion holes 15. In this embodiment, a neodymium magnet having a relatively strong magnetic force is used as the hard magnet 3. The hard magnet 3 is bonded in the insertion hole 15 with a predetermined adhesive so that it does not shift or move in the insertion hole 15. As the hard magnet 3, a relatively general shape such as a disk shape or a rod shape (such as a cylindrical shape or a prismatic shape) can be suitably used. And according to the shape of this hard magnet 3, the shape of the above-mentioned insertion hole 15 is set.

  Here, since the magnetic force of the hard magnet 3 is clear in advance, the magnetic force on the curved mounting surface 10 is determined depending on the distance between the hard magnet 3 and the curved mounting surface 10 in a state of being embedded in the insertion hole 15. The strength can be adjusted. The magnetic force on the curved mounting surface 10 is stronger than the peeling force of the release paper 38 of the double-sided tape 37 and more than the adhesive force of the double-sided tape 37 and the unit weight 36 and the double-sided tape 37 and the rim inner peripheral surface 31. It is adjusted to be weak. In this embodiment, the interval between the deepest portion of the insertion hole 15 and the curved mounting surface 10 is set so that the magnetic force in the curved mounting surface 10 has the adjusted predetermined strength. The hard magnet 3 is embedded and fixed to the deepest part.

  Here, in this embodiment, each hard magnet 3 has the same magnetic pole on the curved mounting surface 10 side and the back side surface 11 side. For example, the curved mounting surface 10 side is the N pole, and the back side surface 11 side is the S pole.

  Further, the back cover 4 is detachably attached to the attachment outer shell 2 so as to cover the back side surface 11 thereof. The back lid body 4 is attached so as to cover the back side surface 11 after the hard magnet 3 is fitted into the insertion hole 15 opened in the back side surface 11, and closes the insertion hole 15. When the hard magnet 3 is replaced or when the hard magnet 3 is specifically displaced in the insertion hole 15, the back cover 4 is removed so that maintenance can be performed. In addition, the back cover 4 is provided with a grip portion 5 protruding toward the back, and the operator can grip the grip portion 5 so that the balance weight mounting jig 1 can be used. It has become.

  In the balance weight mounting jig 1 of the first embodiment, the back side surface 11 of the mounting outer shell 2 corresponds to the back side portion according to the present invention.

  On the other hand, in this embodiment, as shown in FIG. 2, a way track 40 for storing the separation type balance weight 35 is provided, and the way track 40 is directly magnetized to the balance weight mounting jig 1. ing. Thereby, the workability of the work of magnetically attaching the separation type balance weight 35 to the balance weight mounting jig 1 is improved.

  Here, the way track 40 includes a back plate 41, side plates 42 and 42 that stand from both sides of the back plate 41, and a bottom plate 43 that stands from the bottom side of the plane plate 41. The upper side of the back plate 41 and the upper side of the bottom plate 43 are open. The distance between the side plates 42 and 42 is set to be approximately equal to the length of the separation-type balance weight 35. Further, the side plates 42 and 42 and the bottom plate 43 are set so that their heights are wider than the width of the separation-type balance weight 35.

  The way track 40 is arranged to be inclined at a predetermined angle, and the separation type balance weight 35 is stacked on the bottom plate 43 and stored. In addition, this way track 40 also has the outstanding advantage that it can be used as a return box with the place (manufacturer etc.) which manufactures the separation type balance weight 35. FIG.

  Further, since the chord width of the curved mounting surface 10 is set equal to the separation type balance weight 35 as described above, the balance weight mounting jig 1 is fitted between the both side plates 42, 42 of the way track 40. Can do. That is, the curved mounting surface 10 is always fitted by fitting the balance weight mounting jig 1 to the way track 40 so that the curved mounting surface 10 faces the uppermost separated balance weight 35 laminated on the way track 40. The separation type balance weight 35 can be magnetically attached to the fixed position. In this magnetized state, the center of the arc of the curved mounting surface 10 and the center of the separation type balance weight 35 coincide. Further, if the separation-type balance weight 35 is stacked on the way track 40 so that the unit weight 36 does not meander, the separation-type balance weight 35 is magnetically attached to the curved mounting surface 10 in a straight line. Can be easily done. Since the separation type balance weight 35 has only the unit weights 36 connected by the double-sided tape 37 as described above, the unit weights 36 are linearly formed on the curved mounting surface 10 by an operator's manual work, for example. Therefore, it is very useful to use the way track 40, and the workability can be greatly improved.

  Here, in Example 1, when the balance weight mounting jig 1 was fitted to the way track 40 and the separation type balance weight 35 was magnetically attached to the curved mounting surface 10, the balance weight mounting jig 1 was stacked on the way track 40. The magnetic force in the curved mounting surface 10 is set so that only one of the uppermost layers can be magnetically attached. That is, the magnetic force on the curved mounting surface 10 is stronger than the peeling force of the release paper 38 of the double-sided tape 37, weaker than the adhesive force of the double-sided tape 37 to the separation-type balance weight 35 and the rim inner peripheral surface 31, and the curved mounting surface 10. The desired strength for magnetically attaching one separation-type balance weight 35 is set. This desired magnetic force is obtained by setting the magnetic force of the hard magnet 3 itself and the distance between the hard magnet 3 and the curved mounting surface 10 in a state of being disposed in the mounting outer shell 2.

Next, an operation process for attaching the separation type balance weight 35 to the rim inner peripheral surface 31 of the automobile wheel 30 using the balance weight mounting jig 1 described above will be described.
Here, in the present embodiment, the balance weight mounting jig 1 and the way track 40 described above are provided in accordance with the number of unit weights 36 constituting the separation type balance weight 35. That is, the balance weight mounting jig 1 and the way track 40 having dimensions according to the length are prepared in the separation type balance weight 35. The balance weight mounting jig 1 is fitted and placed in each way track 40 in advance, and the curved mounting surface 10 abuts on the uppermost separated balance weight 35 and is magnetically attached (FIG. 3). (See (A)).

  First, a predetermined tire is assembled to the automobile wheel 30, and then a weight balance test is performed. In addition, this weight balance test can be performed according to the method used normally, The description is abbreviate | omitted. Then, according to the weight balance test, the weight of the separation-type balance weight 35 and the mounting position of the separation-type balance weight 35 are determined in order to equalize the weight balance during rotation in the circumferential direction.

  Next, the balance weight mounting jig fitted to the way track 40 from the way track 40 storing the separation type balance weight 35 having the weight determined by the weight balance test (see FIG. 3B). Take 1 out. In this balance weight mounting jig 1, a separation type balance weight 35 is magnetically attached to a fixed position of the curved mounting surface 10 with unit weights 36 arranged in a straight line. In this way, the balance weight attachment jig 1 is fitted to the way track 40 and the curved attachment surface 10 is brought into contact with the uppermost separation type balance weight 35, whereby the separation type balance weight 35 is centered on the curved attachment surface 10. It is possible to easily and stably carry out magnetic adhesion in a state where the positions are aligned and arranged in a straight line.

  After the balance weight mounting jig 1 is taken out from the way track 40, the release paper 38 of the double-sided tape 37 adhered to the separation type balance weight 35 magnetically attached to the curved mounting surface 10 is peeled off. At this time, since the magnetic force on the curved mounting surface 10 is stronger than the peeling force for peeling the release paper 38 of the double-sided tape 37 as described above, the unit weight 36 of the separation type balance weight 35 is displaced or floated. The release paper 38 can be easily peeled off. That is, the separation-type balance weight 35 is maintained in a state where the unit weights 36 are arranged in a straight line.

  Thereafter, as shown in FIG. 4, the balance weight attaching jig 1 is pressed against a predetermined position of the rim inner peripheral surface 31 determined by the weight balance test so that the separation type balance weight 35 is opposed. Here, since the separation type balance weight 35 is magnetically attached to the curved mounting surface 10 with the center position coincident as described above, there is an advantage that the separation type balance weight 35 can be easily positioned at a predetermined position on the rim inner peripheral surface 31.

  By pressing the balance weight mounting jig 1 against the inner peripheral surface 31 of the rim, the double-sided tape 37 of the separation-type balance weight 35 is pressed against the inner peripheral surface 31 of the rim, and the separation-type balance weight 35 is adhered. Then, the balance weight attaching jig 1 is moved away from the attached position. Thereby, the separation-type balance weight 35 remains attached to the rim inner peripheral surface 31 and is detached from the balance weight mounting jig 1. At this time, as described above, the magnetic force on the curved mounting surface 10 is weaker than the adhesive force between the separation type balance weight 35 of the double-sided tape 37 and the inner peripheral surface 31 of the rim, so that the unit weight 36 of the separation type balance weight 35 is It remains attached to the inner peripheral surface 31 of the rim in a straight line without shifting or floating.

  Note that the direction in which the balance weight attaching jig 1 is moved after the separation-type balance weight 35 is attached to the rim inner peripheral surface 31 is the direction away from the rim inner peripheral surface 31 or the axis of the automobile wheel 30. Any of the direction toward the back side of the wheel 30 along the direction may be used.

  In this manner, the work of attaching the separation type balance weight 35 to the rim inner peripheral surface 31 of the automobile wheel 30 using the balance weight attaching jig 1 is completed. As shown in FIG. 3A, the balance weight mounting jig 1 is fitted to the way track 40 and the curved mounting surface 10 is brought into contact with the uppermost separation type balance weight 35. Thereby, when performing the next operation | work, the balance weight attachment jig | tool 1 with which the separation type balance weight 35 was magnetically attached to the fixed position and linear form can be used.

  As described above, the balance weight mounting jig 1 according to the first embodiment separates the separation-type balance weight 35 that is magnetically attached to the curved mounting surface 10 in a straight line without causing meandering due to deviation or floating. The pattern paper 38 can be peeled off and affixed to a predetermined position on the inner peripheral surface 31 of the rim. Since the balance weight mounting jig 1 has the hard magnet 3 fitted in the insertion hole 15, the balance weight attaching jig 1 is peeled off when the release paper 38 is peeled off or attached to the inner peripheral surface 31 of the rim. Even when a force that eliminates the magnetically attached state is applied, deterioration of the adhesive to which the hard magnet 3 is adhered can be suppressed, so that the attached state can be maintained. Therefore, the unit weight 36 of the separation-type balance weight 35 is not displaced or lifted, and can be attached in a straight line to a desired position, and the operation can be easily and stably performed. Can also be shortened.

  As shown in FIG. 5, the balance weight mounting jig 51 according to the second embodiment is configured such that the mounting outer shell 52 has a curved mounting surface 55 and a back side surface 56 that are concentric arcs. Here, the curvature of the curved mounting surface 55 is set as substantially the same curvature as that of the rim inner peripheral surface 31 of the automobile wheel 30 as in the first embodiment. In the mounting outer shell 52, insertion holes 57 for fitting the hard magnets 3 are formed radially from the back side surface 56 along the normal direction of the curved mounting surface 55. As in the first embodiment, the fitting holes 57 are opened in the back side surface 56 and do not penetrate the curved attachment surface 55, and are closely arranged along the curved attachment surface 55.

  And the back part cover body 58 is provided so that the back side surface 56 of the attachment outer shell body 52 may be coat | covered. The back lid body 58 is formed with the same curvature as the back side surface 56 so as to follow the back side surface 56. On the back surface of the back cover 58, a gripping part 59 projects backward.

  Note that the attachment outer shell body 52 and the back cover body 58 of the second embodiment are molded from polyethylene resin as in the first embodiment.

  The hard magnets 3 are fitted in the respective fitting holes 57 of the mounting outer shell body 52. Here, the hard magnet 3 is a neodymium magnet as in the first embodiment, and is embedded up to the deepest portion of the insertion hole 57 and fixed by a predetermined adhesive. The magnetic force of the hard magnet 3 and the depth of the insertion hole 57 are the same as in Example 1 described above, and the strength of the magnetic force on the curved mounting surface 55 is stronger than the peeling force of the release paper 38 of the double-sided tape 37, and The adhesive strength between the double-sided tape 37 and the separation-type balance weight 35 and the rim inner peripheral surface 31 is set to be weaker. Furthermore, since the separation type balance weight 35 is magnetically attached from the way track 40 as in the first embodiment, the strength of the magnetic force on the curved mounting surface 55 is separated from the curved mounting surface 55. It is set so that only one weight 35 is magnetically attached.

  In the balance weight attachment jig 51 of the second embodiment, the above-described implementation is performed except that the shape of the attachment outer shell 52 is changed and the insertion hole 57 is formed along the normal direction of the curved attachment surface 55. The configuration is the same as that of Example 1, the same components are denoted by the same reference numerals, and the description thereof is omitted. The balance weight mounting jig 51 is magnetically attached to a fixed position of the curved mounting surface 55 by the way track 40 in which the separation type balance weights 35 are stacked, similarly to the above-described first embodiment. The inner peripheral surface 31 can be magnetically attached.

  In the balance weight mounting jig 51 of the second embodiment, the insertion hole 57 is provided along the normal direction of the curved mounting surface 55 as described above. Thereby, the direction of the magnetic lines of force of the hard magnet 3 originating from the curved mounting surface 55 can be made uniform, so that the strength of the magnetic force on the curved mounting surface 55 can be easily adjusted, and the strength that is almost uniform over the curved mounting surface 55. This can generate a magnetic force. And the effect similar to Example 1 can be exhibited.

  In the balance weight attaching jig 61 according to the third embodiment, as shown in FIG. 6, the fitting outer shell 62 is formed with tightly fitting holes 65 on both sides of the curved mounting surface 10, and the fitting hole 65 is formed in the center. It is formed sparsely compared to both sides. Here, the mounting outer shell 62 has the same configuration as that of the first embodiment described above except that the formation position of the fitting hole 65 is changed.

  The balance weight mounting jig 61 is configured such that the magnetic force is stronger at both side portions of the curved mounting surface 10 than at the center portion. The strength of the magnetic force at the center portion is stronger than the peeling force of the release paper 38 of the double-sided tape 37, and the strength of the magnetic force at both side portions is the separation-type balance weight 35 and the rim inner peripheral surface 31 of the double-sided tape 37. Set to be weaker than the adhesive strength. That is, the magnetic force of both side portions of the curved mounting surface 10 can be set to be significantly stronger than the peeling force of the release paper 38 of the double-sided tape 37. Here, usually, the release paper 38 of the double-sided tape 37 starts to be peeled off from one side end (or both side ends). And if the side edge can be peeled, the release paper 38 can be peeled off comparatively easily. Therefore, the work of peeling the release paper 38 can be performed more easily by increasing the magnetic force for magnetizing both side portions of the separation type balance weight 35.

  Even in the present embodiment, the separation type balance weight 35 is magnetically attached from the way track 40 as in the first embodiment described above. This is set so that only one separation-type balance weight 35 is magnetically attached to the curved mounting surface 10.

  And the balance weight attachment jig 61 of Example 3 can exhibit the same effect as Example 1 mentioned above.

  In the first to third embodiments described above, the distance between the deepest end of the insertion hole and the curved mounting surface is set according to the magnetic force in the curved mounting surface, and the hard magnet is embedded up to the deepest portion of the insertion hole. However, it is also possible to determine the distance between the hard magnet and the curved mounting surface by embedding the hard magnet so that its tip end portion is located at a predetermined depth in the insertion hole. For example, the insertion hole is formed so that its deepest end is close to the curved mounting surface, and the tip of the hard magnet and the curved mounting surface are spaced a predetermined distance so that the magnetic force on the curved mounting surface has a desired strength. Fit in the insertion hole so that it is in the position. Here, the hard magnet may be embedded after the hole filling material such as resin is embedded in the insertion hole so that the insertion position of the hard magnet in the insertion hole can be accurately determined. In this case, since the distance from the curved mounting surface changes according to the position where the hard magnet is fitted into the insertion hole, the strength of the magnetic force on the curved mounting surface can be increased by changing the fitting position of the hard magnet. Can be adjusted.

  Further, in the configuration of the first and second embodiments described above, the insertion holes are densely formed along the curved mounting surface, and the hard magnets are fitted into the respective insertion holes. It is also possible to reduce the number of hard magnets arranged, for example, every other place without fitting hard magnets in all the fitting holes. Thereby, similarly to Example 3 mentioned above, the magnetic force of the both-sides part of a curved attachment surface can be strengthened. Further, in the second embodiment, similarly to the third embodiment described above, it is possible to form the fitting holes densely on both sides of the mounting outer shell and sparsely form the central portion.

  Furthermore, in the first and second embodiments described above, the hard magnet is fitted at a position away from the curved mounting surface in the insertion hole formed in the central portion of the mounting outer shell as compared with the both side portions. By doing so, it is possible to make the strength of the magnetic force in the central portion of the curved mounting surface weaker than that of both side portions. Also by this, the same operational effects as those of the third embodiment described above can be exhibited.

  Even in the third embodiment described above, it can be formed so that the interval between the fitting holes adjacent to each other from both sides of the mounting shell toward the center is gradually increased.

  In the first to third embodiments described above, the curved mounting surface of the mounting shell is configured to have the same curvature as that of the rim inner peripheral surface 31, but is larger than the curvature of the rim inner peripheral surface (the diameter is reduced). ). In this case, after the balance weight attaching jig is pressed against the inner peripheral surface of the rim, the separation type balance weight can be attached by moving along the curved attachment surface. Such a configuration can be used for an automobile wheel having a rim inner peripheral surface having a curvature equal to or less than the curvature of the curved mounting surface, and is highly versatile. In addition, this configuration is preferable because the mounting outer shell body is formed of a relatively hard material such as hard plastic, and thus has an excellent action of pressing the separation type balance weight 35 against the inner peripheral surface of the rim.

  Moreover, in Examples 1-3 mentioned above, although an attachment outer shell is shape | molded with a polyethylene resin material, it is also possible to shape | mold with other hard plastics. Alternatively, the mounting outer shell can be molded from a rubber-based resin and may have elasticity that can be elastically deformed. A urethane resin can be suitably used as the rubber resin. In the case of molding with rubber-based resin, as described above, the curvature of the curved mounting surface is the same as that of the rim inner peripheral surface, or the curvature of the curved mounting surface is configured to be smaller than that of the rim inner peripheral surface. Can do. Here, in the configuration in which the curvature of the inner peripheral surface of the rim is reduced, when the balance weight mounting jig is pressed against the inner peripheral surface of the rim, the mounting outer shell body is elastic so as to follow the inner peripheral surface of the rim. In order to deform | transform, a separation type balance weight can be affixed on this rim inner peripheral surface. In such a configuration, it can be used for an automobile wheel having a rim inner peripheral surface equal to or larger than the curvature of the curved mounting surface, and is highly versatile.

  Moreover, in Examples 1-3 mentioned above, an attachment outer shell can also be formed with the material which becomes transparent. In this case, since the positional relationship between the separation-type balance weight and the rim inner peripheral surface can be accurately recognized when pressed against the rim inner peripheral surface, the accuracy of the attaching position is further improved. Workability is also improved. Furthermore, since the hard magnet fitted in the insertion hole can also be visually recognized, even if the hard magnet is deviated from the predetermined insertion position of the insertion hole, it can be confirmed and corrected.

  Further, in the above-described first to third embodiments, the insertion hole is formed so as to open on the back side surface and not penetrate the curved mounting surface. As another configuration, the configuration opens to the curved mounting surface. Or it can also be set as the structure drilled along the curved attachment surface from the upper surface or lower surface of the attachment outer shell. Here, when the insertion hole that opens in the former curved mounting surface is formed, the inner surface of the rim is damaged by the hard magnet by fitting the hard magnet so as not to protrude from the curved mounting surface. prevent. In either case, it is preferable to arrange the magnetic pole so that one of the magnetic poles faces the curved mounting surface, so that the strength of the magnetic force on the curved mounting surface can be easily adjusted.

  In the first to third embodiments described above, all the hard magnets are arranged, for example, with the N pole on the curved mounting surface side and the S pole on the back side surface, but are adjacent to each other. It is also possible to arrange the matching hard magnets so that the N pole and the S pole are alternately on the curved mounting surface side.

  On the other hand, in the above-described first to third embodiments, the way track 40 is used. However, without using the way track 40, an operator can separate the separation type balance weight on the curved mounting surface of the mounting outer shell. May be magnetically attached. In this case, the separation-type balance weight can be magnetically attached in a straight line relatively easily by being magnetically attached so as to be in contact with the protruding curved edge portion. Further, the way track may be configured such that the bottom portion supporting the separation-type balance weight is urged upward, and the separation-type balance weight in the uppermost layer is always at substantially the same height position. For example, the height position of the separation-type balance weight is always along the upper opening of the way track, and the balance weight mounting jig is provided in the upper opening with a guide that can be placed so that the respective centers are aligned. . Thereby, the same effect as the above-described embodiment can be exhibited. In this case, since it is not necessary to fit the balance weight mounting jig between the side plates of the way track, a guide for aligning the centers of the balance weight mounting jig and the separation-type balance weight is used as the way track. What is necessary is just to provide outside the upper opening.

  The present invention is not limited to the above-described embodiments, and can of course be appropriately changed within the scope of the present invention. For example, as the hard magnet, a Samakoba magnet or the like can be used in addition to the neodymium magnet.

It is the (A) top view and (B) LL longitudinal cross-sectional view of the balance weight attachment jig | tool 1 of Example 1. FIG. 2A is a plan view and FIG. 2B is a side view of the way track 40. FIG. It is explanatory drawing which shows the process in which the separation type balance weight 35 is magnetized and taken out from the way track 40 with the balance weight attachment jig 1. FIG. FIG. 4 is an explanatory view showing a process of attaching the separation type balance weight 35 to the rim inner peripheral surface 31 of the automobile wheel 30 by the balance weight attaching jig 1. It is (A) top view and (B) MM longitudinal cross-sectional view of the balance weight attachment jig | tool 51 of Example 2. FIG. FIG. 10 is a plan view of a balance weight attachment jig 61 of Example 3. It is (A) top view and (B) side view of separation type balance weight 35.

Explanation of symbols

1, 51, 61 Balance weight mounting jig
2, 52, 62 Mounting shell 3 Hard magnet
10,55 Curved mounting surface
11,56 dorsal side (back side)
15, 57, 65 Insertion hole 30 Automobile wheel 31 Rim inner peripheral surface 35 Separable balance weight 36 Unit weight 37 Double-sided tape (tape)

Claims (4)

Attached to the inner peripheral surface of the rim of an automobile wheel is a separation-type balance weight in which a predetermined number of unit weights having a predetermined weight are arranged on a tape,
A non-magnetic mounting outer shell comprising a convex curved mounting surface facing the inner circumferential surface of the rim and a plurality of insertion holes arranged along the curved mounting surface;
A plurality of hard magnets fitted in the respective insertion holes so as not to protrude from the curved mounting surface of the mounting outer shell,
A balance weight mounting jig, wherein the separation type balance weight is magnetically attached to a curved mounting surface by a magnetic force of a hard magnet.   2. The balance weight according to claim 1, wherein the plurality of fitting holes formed in the mounting outer shell are formed so as to open at a back side portion of the curved mounting surface and not penetrate the curved mounting surface. Mounting jig.   The balance weight mounting jig according to claim 1 or 2, wherein the mounting outer shell is provided with a plurality of insertion holes radially along the normal direction of the curved mounting surface.   The balance weight attachment according to any one of claims 1 to 3, wherein a plurality of magnets are provided such that magnetic forces on both sides are stronger than a central portion of the curved attachment surface. jig.

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