JP2007276617A - Tire fitting supporter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tire fitting supporter capable of easily performing the positioning work of a wheel bolt hole to a hub bolt. <P>SOLUTION: Magnets 14, 19 to guide a wheel 3 to a fastening position to a hub 5 are provided on the wheel 3 to hold a tire body 2 and the hub 5 side of a vehicle body to fasten and fix the wheel 3 with a bolt 6, respectively. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a tire mounting assist device that can easily perform alignment using magnetic force.

Conventionally, when a tire is mounted on a hub on the vehicle body side, a protrusion provided at the center of the hub is inserted into a hub opening provided at the center of the wheel of the tire, and a bolt provided on the hub is inserted into a bolt hole of the wheel. And is fastened and fixed by a nut.
By the way, during the mounting work, the wheel bolt hole and the hub bolt are aligned while the hub opening of the wheel is inserted into the protruding portion of the hub. If the wheel is left without fixing, the wheel is tilted by its own weight. For this reason, it is difficult to perform proper bolt tightening work.
Therefore, after inserting the hub opening of the wheel into the protruding part of the hub, a technique has been proposed in which magnets are used to attract each other so that they are in an appropriate posture even if they are not fastened with bolts and nuts. (For example, refer to Patent Document 1).
Japanese Utility Model Publication No. 6-39505

  However, the above-described prior art is excellent in that the tire does not tilt due to its own weight once the alignment is made, but this is not useful when aligning the bolt hole of the tire and the bolt of the hub. For the alignment work, there is a problem that the attractive force by the magnet interferes with the work.

  Accordingly, the present invention has been made in view of the above-described problems, and provides a tire mounting assist device that can easily perform an alignment operation between a wheel bolt hole and a hub bolt.

In order to solve the above-described problem, the invention described in claim 1 includes a wheel (for example, the wheel 3, 21 in the embodiment) that holds a tire body (for example, the tire body 2 in the embodiment), and the wheel. A hub (for example, hubs 5 and 22 in the embodiment) of a vehicle body (for example, the vehicle body 4 in the embodiment) that is fastened and fixed via a bolt (for example, the bolt 6 in the first embodiment or the stud bolt 33 in the second embodiment). Magnets for guiding the wheel to a fastening position with respect to the hub (for example, the magnets 14 and 19 in the first embodiment or the magnets 29, 30, 34, and 35 in the second embodiment) are respectively provided on the side. It is characterized by.
By comprising in this way, the magnet provided in the wheel of the tire and the magnet provided in the hub can each reliably guide the tire to the fastening position by magnetic force.

In the invention described in claim 2, the magnets (for example, the magnets) attracting each other to the mating surfaces (for example, the mating surfaces 15 and 16 in the first embodiment) of the hub and the wheel in the fastening position with respect to the hub. The magnets 14 and 19) in the first embodiment are provided.
Moreover, like the invention described in claim 3, a plurality of the magnets may be arranged in the circumferential direction and at equal intervals.
With this configuration, for example, even when the bolt hole of the tire and the female screw portion of the hub are aligned after inserting the hub opening of the wheel into the protruding portion of the hub, the magnets are mutually connected. By trying to adsorb, the tire can be reliably guided to the fastening position.

In the invention described in claim 4, a bolt (for example, the stud bolt 33 in the second embodiment) provided on the hub is inserted into a bolt hole (for example, the Balt holes 13 and 27 in the embodiment) of the wheel, and a nut (for example, , A tire mounting auxiliary device used when fastened and fixed by the nut 23 in the second embodiment, and magnets that adsorb to the tip of the bolt and the periphery of the bolt hole (for example, a magnet in the second embodiment) 29, 35), each of which is a mating surface of the wheel with the hub and excluding the periphery of the bolt hole, a magnet repelling the magnet at the tip of the bolt (for example, in the second embodiment) A magnet 30) is arranged.
With this configuration, for example, the tire bolt hole and the hub bolt can be aligned securely before the hub opening of the wheel is inserted into the hub protrusion. Can lead to position.

According to a fifth aspect of the present invention, there are gap portions (for example, the gaps S1, S2, and S3 in the embodiment) that allow entry of dust between the end face of the magnet and the face that faces the end face of the magnet. It is provided.
With this configuration, even when the tire is fastened and fixed to the hub while the magnet is sandwiching dust, the magnet is not damaged by dust.

According to the first aspect of the present invention, since the magnet provided on the wheel of the tire and the magnet provided on the hub can each reliably guide the tire to the fastening position by magnetic force, the tire is fastened and fixed. Therefore, it is possible to easily perform the alignment operation.
Moreover, since the alignment work by the visual confirmation of the operator is not necessary, for example, a tire mounting work in a dark place such as at night can be easily performed.

  According to the invention described in claim 2 or claim 3, for example, the positioning of the bolt hole of the tire and the female screw portion of the hub is performed after the hub opening of the wheel is inserted into the protrusion of the hub. However, since the tires can be reliably guided to the fastening position by the magnets attracting each other, it is preferable when the tire is fastened and fixed to the hub on the vehicle body side with a bolt.

  According to the invention described in claim 4, for example, even when the position of the bolt hole of the tire and the bolt of the hub is aligned before inserting the hub opening of the wheel into the protruding portion of the hub, it is ensured. Since the tire can be guided to the fastening position, it is suitable when the tire is fastened and fixed to the hub on the vehicle body side with a nut.

According to the fifth aspect of the present invention, even when the tire is fastened and fixed to the hub while the magnet is sandwiched with dust, the magnet is not damaged by the dust. Even if it adheres, the tire can be mounted on the hub without worrying about this.

Next, a first embodiment of the present invention will be described with reference to FIGS.
As shown in FIG. 1, a tire 1 is composed of a tire body 2 and a wheel 3, and is fastened and fixed at five points by bolts 6 to a hub 5 provided on the vehicle body 4 side.
As shown in FIGS. 2 to 4, the wheel 3 is formed by integrally molding a rim portion 7 formed in an annular shape and a disk portion 8 provided on the inner peripheral surface of the rim portion 7.
A concave portion 9 is formed on the rim portion 7 toward the outside, and the tire body 2 is attached to the concave portion 9.

  The disk portion 8 is a portion that becomes a fixing portion for fastening and fixing the tire 1 to the hub 5. The disk portion 8 is formed so as to bulge outward (right side in FIG. 2) from the center of the rim portion 7 in the width direction. In this way, the recess 10 is formed by the inner peripheral surface of the rim portion 7 and the surface of the disk portion 8 on the hub 5 side (left side in FIG. 2). Each component such as a brake and a suspension disposed on the axle 11 side of the vehicle body 4 is interposed in the recess 10.

A hub opening 12 formed in a substantially circular shape is formed at the center of the disk portion 8, that is, at the axis K of the axle 11. Bolt holes 13 are formed in the peripheral edge of the hub opening 12 at five locations in the circumferential direction at equal intervals. Further, five substantially disc-shaped magnets 14 are provided on the mating surface 15 of the disk portion 8 with the hub 5 at equal intervals in the circumferential direction so as to correspond to the bolt holes 13.
Here, as shown in FIG. 3, the magnet 14 is attached in a state where its upper surface is located at a position recessed from the mating surface 15 of the disk portion 8.

The hub 5 provided on the vehicle body 4 side is a portion that becomes a fixing portion for fastening and fixing the tire 1 similarly to the disk portion 8 of the wheel 3. The hub 5 is disposed at the end of the axle 11 so that the rotational driving force of the axle 11 is transmitted to the hub 5 via a joint (not shown) and is rotated integrally with the axle 11. Yes.
A projecting portion 17 is formed at the center of the mating surface 16 with the disc portion 8 of the hub 5. The protruding portion 17 is a portion that is inserted into the hub opening 12 of the disk portion 8 described above, and has an outer shape that is substantially circular. The outer diameter of the protrusion 17 and the inner diameter of the hub opening 12 are set to dimensions corresponding to each other.

Five female screw portions 18 are formed on the periphery of the protruding portion 17. The female screw portion 18 is formed at a position corresponding to the bolt hole 13 of the disc portion 8 of the wheel 3. Further, five magnets 19 formed in a substantially disk shape are provided on the mating surface 16 of the hub 5 and corresponding to the magnets 14 of the disk portion 8.
As shown in FIG. 3, the magnet 19 is also attached in a state where its upper surface is located at a position recessed from the mating surface 16 of the hub 5. Therefore, a gap S <b> 1 is formed between the upper surface of the magnet 19 and the upper surface of the magnet 14. The magnet 19 and the magnet 14 are arranged so that the magnetic poles attracted to each other face each other.

Therefore, according to the first embodiment described above, in order to mount the tire 1 on the hub 5 on the vehicle body 4 side, first, the tire 1 is brought close to the hub 5 with the concave portion 10 side of the wheel 3 facing the vehicle body 4 side. . Then, the magnet 14 provided on the wheel 3 and the magnet 19 provided on the hub 5 are attracted to each other, and the hub opening 12 of the wheel 3 is formed in the portion corresponding to the protrusion 17 of the hub 5. The bolt holes 13 of the wheel 3 are respectively guided to portions corresponding to the screw portions 18.
For this reason, the tire 1 is guided to an appropriate position for fastening and fixing by magnetic force without visual confirmation by an operator, and as a result, the position of the protrusion 17 of the hub 5 and the hub opening 12 of the wheel 3. The alignment operation and the alignment operation between the female screw portion 18 of the hub 5 and the bolt hole 13 of the wheel 3 can be facilitated. Therefore, for example, such a positioning operation can be easily performed even in a dark place such as at night, and an appropriate mounting operation can be performed.

Next, the tire 1 set on the hub 5 is fastened and fixed with bolts 6. At this time, since the gap S1 is formed between the magnet 14 of the wheel 3 and the magnet 19 of the hub 5, for example, even if dust remains on the upper surface of the magnet 14 and the upper surface of the magnet 19 The magnet 14 and the magnet 19 do not sandwich dust with each other. For this reason, the magnets 14 and 19 are not damaged by dust.
Further, since the magnets 14 and 19 are attracted to each other, the tire 1 is inclined with its own weight with respect to the hub 5 even when the tire 1 is only set on the hub 5 before the fastening operation with the bolt 6. And maintain a proper posture.

Next, a second embodiment of the present invention will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected and demonstrated to the same aspect as 1st embodiment.
As shown in FIGS. 5 to 8, the tire 20 includes a tire body 2 and a wheel 21, and is fastened and fixed to a hub 22 by a nut 23.
The wheel 21 is formed by integrally molding a rim portion 24 formed in an annular shape and a disk portion 25 provided on the inner peripheral surface of the rim portion 24.
A recess 36 is formed on the inner peripheral surface of the rim portion 24 and the hub 22 side of the disc portion 25.

A hub opening 26 formed in a substantially circular shape is formed at the center of the disk portion 25 of the wheel 21, that is, at the axis K of the axle 11. Bolt holes 27 are formed in the peripheral edge of the hub opening 26 at five locations in the circumferential direction at equal intervals. An annular magnet 29 is provided on the peripheral surface of the bolt hole 27 and on the mating surface 28 of the disk portion 25 with the hub 22.
The mating surface 28 is provided with five magnets 30 formed in a substantially disk shape at equal intervals in the circumferential direction on the concentric circles of the bolt holes 27 so as to correspond to the bolt holes 27.
Here, as shown in FIG. 6 and FIG. 7, the magnet 29 and the magnet 30 are each mounted with their upper surfaces positioned at positions recessed from the mating surface 28 of the disk portion 25.

  A projecting portion 32 is formed at the center of the mating surface 31 with the disc portion 25 of the hub 22. The protruding portion 32 is a portion that is inserted into the hub opening 26 of the disk portion 25 and has an outer shape that is substantially circular. The outer diameter of the protrusion 32 and the inner diameter of the hub opening 26 are set to dimensions corresponding to each other.

  A stud bolt 33 is fixed to the periphery of the protruding portion 32 so as to protrude outward (right side in FIG. 5). The stud bolt 33 is disposed so as to correspond to the bolt hole 27 of the disk portion 25 of the wheel 21. A magnet 35 is provided at the tip of the stud bolt 33. The magnet 35 and the magnet 29 provided at the periphery of the bolt hole 27 in the disk portion 25 of the wheel 21 described above are provided with magnetic poles attracting each other. Further, the magnet 35 and the magnet 30 provided on the mating surface 28 of the disk portion 25 of the wheel 21 described above are provided with the magnetic poles repelling each other.

  Five portions of magnets 34 formed in a substantially disk shape are provided on the mating surface 31 of the hub 22 and corresponding to the magnets 30 of the disk portion 25. The magnet 30 and the magnet 34 are provided such that the magnetic poles attracted to each other face each other. As shown in FIG. 7, the magnet 34 is also attached in a state where its upper surface is located at a position recessed from the mating surface 31 of the hub 22. Accordingly, a gap S <b> 2 is formed between the magnet 30 and the magnet 34. Further, a gap S <b> 3 is formed between the magnet 29 of the disk portion 25 and the mating surface 31 of the hub 22.

  Therefore, according to the second embodiment described above, in order to mount the tire 20 on the hub 22, first, the tire 20 is brought closer to the hub 22 with the recess 36 side of the wheel 21 facing the hub 22 side. Then, the magnet 29 provided at the periphery of the bolt hole 27 of the wheel 21 and the magnet 35 provided at the tip of the stud bolt 33 of the hub 22 attract each other, and the bolt hole 27 of the wheel 21 is formed in a portion corresponding to the stud bolt 33. Is guided.

  For this reason, the operator can insert the bolt hole 27 of the tire 20 into the stud bolt 33 by the magnetic force without visual confirmation. Here, even if the position of the tire 20 with respect to the hub 22 is not appropriate, the magnet 30 provided on the wheel 21 and the magnet 35 provided on the tip of the stud bolt 33 repel each other, and the above-described appropriate Since the tire 20 is guided to the position, the alignment operation of the bolt hole 27 and the stud bolt 33 of the tire 20 can be performed smoothly and reliably (alignment in the circumferential direction).

  When the wheel 21 is inserted into the stud bolt 33, the magnet 30 provided on the wheel 21 and the magnet 34 provided on the hub 22 attract each other, and a portion corresponding to the protruding portion 32 of the hub 22 is used for the hub of the wheel 21. The opening 26 is guided. For this reason, it is possible to easily align the projecting portion 32 of the hub 22 and the hub opening 26 of the wheel 21 after the wheel 21 is inserted into the stud bolt 33. Therefore, for example, such a positioning operation can be easily performed even in a dark place such as at night, and an appropriate mounting operation can be performed.

Next, the tire 20 set on the hub 22 is fastened and fixed by the nut 23. At this time, a gap S2 is formed between the magnet 30 of the wheel 21 and the magnet 34 of the hub 22, and a gap S3 is formed between the magnet 29 provided on the periphery of the bolt hole 27 and the mating surface 31 of the hub 22. Therefore, for example, even if dust remains on the upper surfaces of the magnet 30, the magnet 34, and the magnet 29, the magnet 30 and the magnet 34 do not sandwich dust with each other. Further, dust is not caught when the magnet 29 is attracted to the mating surface 31 of the hub 22. For this reason, the magnets 30, 34, and 29 are not damaged by dust.
Further, since the magnet 30 and the magnet 34 are attracted to each other, even if the tire 20 is only set on the hub 22 before the fastening operation by the nut 23, the tire 20 is not self-weighted relative to the hub 22. You can keep a proper posture without tilting.

The present invention is not limited to the embodiment described above. For example, in the first embodiment, the case where the discs 8 and the hub 5 of the wheel 3 are provided with the magnets 14 and 19 formed in a substantially disc shape has been described, but the outer shape is a polygon instead of the substantially disc shape. A magnet may be provided.
Moreover, although the case where the magnets 14 and 19 were provided in the circumferential direction at five places at equal intervals was demonstrated, if the tire 1 can hold | maintain without inclining with respect to the hub 5 before the fastening fixing operation | work with the volt | bolt 6, the magnets 14 and 19 The number of installations is not limited to five.

  Further, for example, in the second embodiment, the case where the magnet 34 is provided on the mating surface 31 of the hub 22 at the portion corresponding to the magnet 30 provided on the disk portion 25 of the wheel 21 has been described. The magnet 31 may not be provided on the surface 31.

It is a perspective view which shows the state of the tire attached to the vehicle body in embodiment of this invention. It is a longitudinal cross-sectional view which shows the state of the tire attached to the vehicle body in embodiment of this invention. It is the A section enlarged view of FIG. It is a perspective view of a hub and a wheel in an embodiment of the present invention. It is a longitudinal cross-sectional view which shows the state of the tire attached to the vehicle body in embodiment of this invention. It is the B section enlarged view of FIG. It is the C section enlarged view of FIG. It is a perspective view of a hub and a wheel in an embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tire 2 Tire main body 3 Wheel 4 Car body 5 Hub 6 Bolt 14 Magnet 15 Matching surface 16 Matching surface 18 Female thread part 19 Magnet 20 Tire 21 Wheel 22 Hub 23 Nut 28 Matching surface 29 Magnet 30 Magnet 31 Matching surface 33 Stud bolt (bolt )
34 magnet 35 magnet

Claims (5)

  A tire mounting characterized in that a magnet for guiding the wheel to a fastening position with respect to the hub is provided on a wheel that holds the tire body and a hub side of a vehicle body that fastens and fixes the wheel via a bolt. Auxiliary device.   The tire mounting assistance device according to claim 1, wherein the magnets attracting each other are provided on a mating surface between the hub and the wheel at a fastening position with respect to the hub.   The tire mounting assistance device according to claim 2, wherein a plurality of the magnets are arranged in the circumferential direction at equal intervals.   A tire mounting auxiliary device used when a bolt hole of a wheel is inserted into a bolt provided on a hub and fastened and fixed by a nut, and includes magnets that adsorb each other at a tip of the bolt and a peripheral edge of the bolt hole. A tire mounting assistance device, wherein a magnet that repels the magnet at the tip of the bolt is disposed on a surface of the wheel that mates with the hub, excluding the periphery of the bolt hole. The tire according to any one of claims 1 to 4, wherein a gap portion that allows entry of dust is provided between an end surface of the magnet and a surface that faces the end surface of the magnet. Wearing assistance device.

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