JP4528855B2 - Tire rim mounting device - Google Patents

Description

  The present invention relates to a tire rim mounting device mounted on a tire inspection device or the like.

  Conventionally, multiple tires such as uniformity (dynamic uniformity), dynamic balance (dynamic balance), and outer shape measurement have been performed on tires that have risen to product. Tire inspection devices that perform these product inspections A pair of rims are provided that sandwich and support the tire to be tested. There are several types of rims depending on the size of the tire to be supported. If the size or type of the tire to be inspected changes, the rim must be replaced. Therefore, the conventional tire inspection apparatus is provided with a rim exchanging apparatus for exchanging rims.

As such a rim exchanging device, for example, a device that fixes a rim with a claw provided on the spindle side is known. The claw portion is swingable at the tip side formed in a hook shape with respect to the base end side, and the rim exchanging device swings the claw portion using the driving means using the driving means such as an actuator. The rim can be fixed to the spindle side.
However, the rim exchanging device for fixing the rim using the claw portion as described above tends to have a complicated structure, which is not preferable in terms of the device price and maintenance.

Therefore, in Patent Document 1 below, a rim replacement that is configured such that a rim can be fixed to a spindle using a permanent magnet and the rim is separated from the spindle against the magnetic force of the permanent magnet when the rim is replaced. An apparatus is disclosed.
Japanese Patent No. 2626902 (see FIGS. 1, 2, and 3)

However, the prior art has the following problems.
That is, in order to fix the rim to the spindle, a permanent magnet having a strong magnetic force is used. And a permanent magnet with a strong magnetic force is often formed of a brittle material such as ferrite, and may be damaged if a strong impact is applied. When such a permanent magnet is broken, handling after the breakage becomes troublesome, for example, fragments are scattered.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a tire rim mounting device that is easy to handle after damage even when a permanent magnet is damaged due to an impact during magnetic attachment. To do.

In order to achieve the object, the present invention takes the following technical means.
That is, the tire rim mounting device of the present invention is provided on a spindle provided in the tire inspection device, and a rim mounting surface is formed on the tip side of the spindle, and the permanent surface provided on the mounting surface is provided. in mounting apparatus has been rims for tires to mount the rim to the spindle using a magnetic force of the magnet, to the mounting hole, shatterproof for preventing scattering of fragments when said permanent magnet is broken as a member, and a lid closing the opening of the mounting hole is formed in non-magnetic material is provided, wherein the lid is provided in the opening of the mounting hole so as to cover said permanent magnet In addition, the surface of the lid facing the rim is disposed at a position deeper than the mounting surface .

If the anti-scattering member is provided in the mounting hole in this way, even if the permanent magnet is damaged due to the shock during magnetic attachment, the debris will not be scattered, and for example, it may adversely affect the rim mounting when replacing the rim. Therefore, handling is easy even after breakage. Further, it becomes difficult for the impact at the time of rim magnetic attachment to be transmitted to the surface of the anti-scattering member, and the permanent magnet can be more effectively prevented from being destroyed.

In the above-described configuration, the mounting hole has a lid that is made of a magnetic material and blocks the opening of the mounting hole as a scattering prevention member for preventing scattering of fragments when the permanent magnet is damaged. The permanent magnet is wrapped in a case body made of a nonmagnetic material having an opening at least at one end, and the opening of the case body is inserted into the mounting hole so as to face the rim. The cover body covers the permanent magnet in such a manner that the outer periphery of the cover body is in contact with the inner periphery of the case body, and the surface of the cover body facing the rim is flush with the mounting surface. It is also possible to adopt a configuration that is deeper than the mounting surface .

If so this can prevent the magnetic force toward the rim is weakened due to the magnetic force toward the spindle side. Also, the nonmagnetic material case surrounding the outer periphery of the permanent magnet reduces the magnetic force from the permanent magnet toward the spindle of the magnetic material, making it easy to attach and detach the permanent magnet to the mounting hole.
If the magnetic material lid covers the entire opening of the mounting hole, in other words, if the permanent magnet and the spindle are connected via the magnetic material lid, the magnetic force toward the rim may be weakened. Therefore, it is not preferable. Therefore, it is preferable to provide the cover body so that the outer periphery of the cover body contacts the inner periphery of the case body. As the lid body in which the outer periphery of the lid body is in contact with the inner periphery of the case body, for example, the opening is formed smaller than the inner diameter of the case body, and the lid body is an opening of the case body. It is possible to employ one having a small diameter portion that fits into the small diameter portion and a large diameter portion that is formed to have a larger diameter than the small diameter portion and fits on the inner periphery of the case body.

Further, in the above configuration, a lid body made of a non-magnetic material and covering the permanent magnet is provided in the mounting hole as a scattering prevention member for preventing scattering of fragments when the permanent magnet is broken. The surface of the lid facing the rim is disposed flush with the mounting surface or at a position deeper than the mounting surface, and is mounted on the bottom surface of the mounting hole from the outside of the spindle. It is also possible to adopt a configuration in which a through hole leading to the inside is provided, and a bottom plate that covers the entire bottom surface and is in contact with the permanent magnet is mounted on the bottom surface of the mounting hole .

In this way, if the permanent magnet is damaged in the mounting hole, for example, by inserting a rod or the like through the through hole and pressing the bottom plate, magnet fragments can be mounted at once by the bottom plate. It can be pushed out of the hole. Therefore, it becomes easy to clean up the pieces of the permanent magnet, and the replacement work of the permanent magnet can be performed efficiently.
A through-hole that communicates from the outside of the spindle to the bottom surface of the mounting hole is provided on the bottom surface side of the mounting hole, and the case body may have a bottomed structure.

Even in this case, if the permanent magnet is damaged in the mounting hole, if the bottom surface of the case body is pressed through the through hole, the pieces of the magnet are moved out of the mounting hole at once by the case body. Can be extruded .

  According to the present invention, in a tire rim mounting apparatus, even when a permanent magnet is damaged due to an impact during magnetic attachment, handling after the damage can be easily performed.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a front view of a tire inspection apparatus 1 including a tire rim mounting apparatus 42 according to this embodiment. In the following description, the upper and lower sides of the sheet of FIG. 1 are defined as the vertical direction (vertical direction) when the tire inspection apparatus 1 is described.
As shown in FIG. 1, the tire inspection apparatus 1 performs product inspection such as uniformity, shape measurement, or dynamic balance of the tire T. The tire inspection apparatus 1 includes a conveyance roller 2 that horizontally conveys a tire T to be tested, and the upper and lower rims 4 provided on the upper and lower spindles 14 and 16, the tire T conveyed by the conveyance roller 2, The tire test is performed while being held between 5. The conveyance roller 2 is directed in the conveyance direction in a direction penetrating the paper surface of FIG. 1 from the back side to the near side, and the tire inspection apparatus 1 is a frame 3 installed so as to straddle the conveyance roller 2. A pair of upper and lower spindles 14 and 16 and a rotating drum 8 are provided therein. These upper and lower spindles 14 and 16 are provided with upper and lower rims 4 and 5 which are fixed with a tire T interposed therebetween, and the rotating drum 8 is moved horizontally with respect to the tire T held by the upper and lower rims 4 and 5. The structure is such that uniformity and shape measurement are performed by bringing the rotating drum 8 into contact with the tire T.

The upper spindle housing 6 includes an upper spindle 14 that is rotationally driven in both forward and reverse directions by a drive motor 13. A drive motor 13 is provided on the upper portion of the frame 3, and the upper spindle 14 can be rotated around the vertical axis both forward and backward by the drive motor 13.
As shown in FIG. 2, an engaging portion 15 that is recessed upward is formed on the lower end surface of the upper spindle 14, and the upper end of the lower spindle 16 is fitted to the engaging portion 15 so as to move up and down. The spindles 14 and 16 are connected to be connected to one.

  A flange portion 17 is formed on the lower end side of the upper spindle 14 so as to protrude radially outward (radially outward) from the outer peripheral surface. A flat portion is formed on the lower surface of the flange portion 17 and serves as a mounting surface 43 of the upper rim 4. A plurality of upper mounting holes 18 that are recessed upward are formed around the rotational axis of the upper spindle 14 on the lower surface of the flange portion 17. The upper permanent magnets 9 for magnetically attaching the upper rim 4 to the upper spindle 14 are respectively attached to the mounting holes 18.

As shown in FIG. 1, the lower spindle 16 is rotatable about a vertical axis via a bearing (not shown) with respect to the lower spindle housing 7, and the lower spindle housing 7 is vertically movable. It is attached to a telescopic part (elevating cylinder) 44 that is telescopic.
As shown in FIG. 3, the upper end of the lower spindle 16 is tapered upward and can be engaged with the engaging portion 15 of the upper spindle 14. Further, a flange portion 20 is formed below the portion of the lower spindle 16 formed in a tapered shape so as to project radially outward (radially outward). A flat portion is formed on the upper surface of the flange portion 20, and is a mounting surface of the lower rim 5. A plurality of lower mounting holes 21 recessed downward are formed on the upper surface of the flange portion 20 around the rotational axis of the lower spindle 16. The lower permanent magnets 10 for magnetically attaching the lower rim 5 to the lower spindle 16 are mounted in the mounting holes 21, respectively.

  As shown in FIG. 1, the drum unit 8 is disposed on the side where the lower spindle 16 is connected to the upper spindle 14, and is attached to the frame 3 in a suspended state. The rotating drum 8 includes a rotating drum 22 formed in a cylindrical shape around a vertical axis, a shaft portion that rotatably supports the rotating drum 22, and a drum support body 23 that supports the shaft portion. A road surface on which the tire T is installed is formed on the outer peripheral surface of the drum portion 22, and the rotating drum 22 is driven to rotate by the road surface frictional force of the tire T by bringing the tire T into contact with the road surface.

The drum support 23 is formed in a substantially U-shape when viewed from the side, and supports the shaft portion of the drum portion 22 between the protruding ends protruding in the horizontal direction. The drum support 23 includes a slide rail 24 on the upper surface side, and is movable in the horizontal direction with respect to the frame 3.
By the way, in the tire inspection apparatus 1 of the present invention, a magnetic force is applied to the upper rim 4 and the lower rim 5 by the permanent magnets 9 and 10 provided on the flange portions 17 and 20 of the upper and lower spindles 14 and 16 as described above. It is configured as follows. The permanent magnets 9 and 10 have a strong magnetic force so that the upper and lower rims 4 and 5 can be firmly fixed to the upper and lower spindles 14 and 16, but the permanent magnet having a strong magnetic force is a brittle material such as ferrite. In many cases, it may be damaged when a strong impact is applied. In particular, in the tire inspection apparatus 1, when changing the type and size of the tire T, the upper and lower rims 4, 5 are also changed according to the tire T. Handling after the breakage becomes troublesome, such as being in the way of wearing, and taking time and labor to clean up, and the efficiency of the replacement work becomes worse.

Therefore, in the present invention, the bottomed mounting holes 18 and 21 are formed in the lower surface of the flange portion 17 and the upper surface of the flange portion 20 (the mounting surfaces 43 and 45 in this embodiment), and the permanent magnets 9 and 10 are placed therein. While being inserted, the mounting holes 18 and 21 are provided with a scattering prevention member 46 for preventing the fragments from scattering when the permanent magnets 9 and 10 are damaged.
The tire rim mounting device 42 according to the first embodiment will be described in detail below. The tire rim mounting device 42 can be provided on at least one of the flange portion 17 of the upper spindle 14 and the flange portion 20 of the lower spindle 16. The upper and lower flange portions 17, 20 are arranged vertically. A similar configuration is provided except that the points are reversed. In the following description, the tire rim mounting device 42 provided with the flange portion 17 of the upper spindle 14 will be described as an example.

As shown in FIG. 5A, the tire rim mounting device 42 according to the first embodiment includes a bottomed mounting hole 18 in which the upper permanent magnet 9 is inserted into the mounting surface 43 of the upper rim 4, and The mounting hole 18 is provided with a scattering prevention member 46 for preventing the fragments from scattering when the upper permanent magnet 9 is damaged.
As illustrated in FIG. 4, which is a plan view of FIG. 5A, the mounting hole 18 is formed on the mounting surface 43 of the upper rim 4 on the upper spindle 14 on a concentric circle centered on the axis of the upper spindle 14. A plurality (20 in this embodiment) are provided so as to be arranged at a predetermined interval. Thus, if the mounting holes 18 are arranged so as to be arranged at regular intervals, the magnetic force acts uniformly on the upper rim 4 from the mounting surface 43, and the upper rim 4 can be fixed securely. . Moreover, magnetic force can be utilized efficiently by arrange | positioning a magnet so that it may adjoin with the distance below the radius of a magnet.

  As shown in FIG. 5A, the mounting hole 18 is formed in a bottomed cylindrical shape that opens downward. The mounting hole 18 is formed in the shape of a stepped hole, and the upper side has a smaller diameter than the lower part facing the opening side. The upper portion of the mounting hole 18 is formed to have an inner diameter matching the outer diameter of the permanent magnet 9 so that the permanent magnet 9 can be inserted from below. The lower portion of the mounting hole 18 is formed to have an inner diameter that matches the outer diameter of the scattering prevention member 46, and the scattering prevention member 46 can be fitted into the mounting hole 18 in a state where the permanent magnet 9 is accommodated.

  The permanent magnet 9 is formed in a columnar shape having a smaller diameter than the mounting hole 18. The thickness of the permanent magnet 9 in the vertical direction is formed to be thinner than the depth in the vertical direction of the mounting hole 18 so that the permanent magnet 9 can be securely stored in the upper part of the mounting hole 18. The permanent magnet 9 is formed of a magnetic material such as a ferrite magnet, a neodymium magnet, or a Samakova magnet, and can be magnetically attached to the bottom surface of the mounting hole 18 made of a magnetic material.

  The anti-scattering member 46 of the first embodiment is provided as a lid 30 that closes the opening of the mounting hole 18. The lid 30 (scattering prevention member 46) is made of a nonmagnetic material that cannot be magnetically attached to the permanent magnet 9 (for example, a metal material such as aluminum, copper, or stainless steel, or a synthetic resin). It is formed in the shape of a disk with an outer diameter that can be fitted into the disk. The outer diameter of the lid 30 is formed larger than that of the permanent magnet 9, and the lid 30 is located below the permanent magnet 9 so that its axis is concentric with the axis of the cylindrical permanent magnet 9. Is provided. Therefore, the lid 30 can cover the entire lower surface of the permanent magnet 9. Whether the thickness of the lid 30 (vertical thickness) is the same as the vertical depth at the bottom of the mounting hole 18 so that the lower surface of the lid 30 does not protrude downward from the mounting surface 43 of the upper rim 4. It is formed to be thinner.

  Therefore, when the permanent magnet 9 and the lid body 30 are inserted into the mounting hole 18, the lid body 30 is fitted into the lower portion of the mounting hole 18 as the permanent magnet 9 is inserted into the upper portion of the mounting hole 18. The opening of the mounting hole 18 is entirely covered with the lid 30 in a state where the permanent magnet 9 is accommodated. As a result, even if the permanent magnet 9 is damaged due to an impact when the upper rim 4 is magnetically attached, fragments of the permanent magnet 9 are not scattered outside from the mounting hole 18. Therefore, there is no possibility that the fragments will adversely affect the attachment of the rim, the handling after the breakage can be easily performed, and the rim replacement operation is not adversely affected.

  Further, if the lid 30 is formed of a magnetic material, the magnetic lines of force from the permanent magnet 9 may pass through the lid 30 toward the outer peripheral side (spindle of magnetic material), and the magnetic force toward the rim may be weakened. However, if the lid 30 is formed of a nonmagnetic material that cannot be magnetically attached to the permanent magnet 9 as described above, the magnetic force toward the upper rim 4 will not be weakened. In contrast, the upper rim 4 can be reliably magnetically attached to the mounting surface 43 by exerting a sufficient magnetic force.

  When the lid 30 is placed on the opening side of the mounting hole 18, the lid 30 is arranged such that the lower surface of the lid 30 (the surface facing the upper rim 4) is flush with the mounting surface 43 of the upper rim 4. If the body 30 is fitted into the mounting hole 18, the impact at the time of rim magnetic adhesion transmitted to the permanent magnet 9 is alleviated and the possibility that the permanent magnet 9 is destroyed is reduced. Moreover, if the permanent magnet 9 is covered with the synthetic resin lid body 30, the lid body 30 functions as an impact buffer, and the possibility that the permanent magnet 9 is destroyed can be further reduced.

  It should be noted that when the lid 30 is put on the lower portion of the mounting hole 18, the lid is arranged such that the lower surface of the lid 30 (the surface facing the upper rim 4) is deeper than the mounting surface 43 of the upper rim 4. If the body 30 is fitted into the mounting hole 18, the impact generated when the upper rim 4 is magnetically attached acts only on the mounting surface 43 and is not directly transmitted to the lid body 30. Therefore, it is possible to further reduce the possibility that the impact at the time of rim magnetic adhesion transmitted to the permanent magnet 9 is alleviated and the permanent magnet 9 is destroyed.

Next, the tire rim mounting device 42 of the second embodiment will be described.
As shown in FIG. 5B, in the tire rim mounting device 42 of the second embodiment, the permanent magnet 9 is wrapped in a case body 31 made of a non-magnetic material having upper and lower ends opened. The case body 31 is inserted into the mounting hole 18 so that the lower opening faces the upper rim 4. Unlike the first embodiment, the lid body 30 of the second embodiment is made of a magnetic material, and covers the permanent magnet 9 so that the outer periphery of the lid body 30 abuts on the inner peripheral surface of the case body 31. ing.

  The case body 31 is formed in a cylindrical shape with the same nonmagnetic material as the lid body 30 of the first embodiment. Inside the case body 31, a permanent magnet 9 is inserted on the upper side, and a lid body 30 is inserted on the lower side. The case body 31 is formed to have an inner diameter into which the permanent magnet 9 can be inserted, and the cover body 30 covers the upper surface of the permanent magnet 9 with the outer periphery abutting on the inner peripheral side of the case body 31. Further, unlike the first embodiment, the mounting hole 18 of the second embodiment is formed in a straight bottomed cylindrical shape, and the permanent magnet 9 and the lid 30 are also mounted in accordance with the insertion of the case body 31 into the mounting hole 18. It can be inserted into the hole 18.

  If the case body 31 is formed of a nonmagnetic material that is not magnetically attached to the permanent magnet 9 in this way, the case body 31 is not magnetically attached to the inner peripheral surface of the mounting hole 18 when being attached or detached, and is formed of a nonmagnetic material. The case body 31 reduces the magnetic force from the permanent magnet 9 toward the upper spindle 14 (inner peripheral surface of the mounting hole 18), so that the permanent magnet 9 can be smoothly inserted into the mounting hole 18 without being obstructed by the magnetic force. It becomes possible.

  Even if the case body 31 is formed of a nonmagnetic material, if the cover 30 made of a magnetic material covers the entire opening of the case body 31, a part of the magnetic force is directed to the spindle through the cover 30, and There is a possibility that the magnetic force of the permanent magnet with respect to the rim 4 may be weakened. However, if the outer periphery of the lid body 30 is brought into contact with the inner circumference side of the case body 31 made of a nonmagnetic material, it is possible to suppress a part of the magnetic force from being directed to the upper spindle 14 via the lid body 30, and the upper rim 4. It is possible to suppress a decrease in the magnetic force of the permanent magnet 9 with respect to.

The remaining configuration of the tire rim mounting device 42 of the second embodiment is the same as that of the first embodiment. Therefore, description of the configuration other than the above is omitted.
As shown in FIG. 5C, the tire rim mounting device 42 of the third embodiment is different from the second embodiment in that the case of a non-magnetic material having upper and lower ends opened in the second embodiment. Whereas the body 31 is used, in the third embodiment, a covered case body 31 having only an opening at the lower end is used. In the third embodiment, a through hole 28 is provided on the bottom surface side of the mounting hole 18 so as to communicate with the mounting hole 18 from the upper surface of the flange portion 17 (outside the upper spindle 14).

  The through hole 28 is a straight hole that connects the bottom surface of the mounting hole 18 and the top surface of the flange portion 17 in the vertical direction, and has a diameter smaller than the inner diameter of the mounting hole 18 and the outer diameter of the permanent magnet 9. ing. For example, if a rod-shaped guide member 29 is inserted into the through hole 28 from above and the lower end of the guide member 29 is brought into contact with the upper end of the case body 31, the through hole 28 is pulled toward the bottom side of the mounting hole 18. The permanent magnet 9 can be slowly mounted in the mounting hole 18 while resisting the magnetic force. Therefore, it is possible to prevent the permanent magnet 9 from being damaged by the magnetic force and colliding with the bottom of the mounting hole 18 vigorously.

  Further, when removing the permanent magnet 9 from the mounting hole 18, if the rod-shaped guide member 29 is inserted into the through hole 28 from above and the case body 31 is pushed down from above, the permanent magnet 9 is damaged. Even if there are debris in the mounting hole 18, the pieces of the permanent magnet 9 can be pushed out of the mounting hole 18 at once by the case body 31, and after the debris can be cleaned more efficiently, handling after the breakage is possible. Easy. Therefore, the present embodiment is particularly effective when a permanent magnet 9 is easily damaged or when a permanent magnet 9 is easily magnetized with small pieces.

In the third embodiment, a case body 31 with a lid having an opening at the lower end is used. The case body is divided into a bottom body for covering the bottom surface of the mounting hole and a cylindrical member having an opening at the upper end side. However, the same effect can be obtained. Further, the bottom body can be made of a magnetic material, and by doing so, there is an advantage described in the fourth embodiment later.
Other configurations of the tire rim mounting device 42 of the third embodiment are the same as those of the second embodiment. Therefore, description of the configuration other than the above is omitted.

As shown in FIG. 5D, the tire rim mounting device 42 of the fourth embodiment is different from the first embodiment in that a bottom body 32 that covers the entire bottom surface is mounted on the bottom surface of the mounting hole 18. There is in point. A through hole 28 similar to that of the third embodiment is provided on the bottom surface side of the mounting hole 18.
The bottom body 32 is formed in a disk shape having an outer diameter that matches the inner diameter of the mounting hole 18. The outer diameter of the bottom body 32 is set slightly smaller than the inner diameter of the mounting hole 18 that covers the entire bottom surface of the mounting hole 18, and the bottom body 32 is movable up and down in the mounting hole 18. The bottom body 32 is disposed on the bottom surface side of the permanent magnet 9, and the pieces of the permanent magnet 9 can be pushed out of the mounting hole 18 at once by moving downward.

Therefore, if the rod-shaped guide member 29 is inserted into the through hole 28 from above and the bottom body 32 is pushed down from above, even if the permanent magnet 9 is broken, the bottom body 32 It can be pushed out of the mounting hole 18 at once, and handling after breakage is easy.
The bottom body 32 may be made of a nonmagnetic material, but preferably the bottom body 32 is made of a magnetic material. This is because the fragments generated when the permanent magnet 9 is broken can be magnetically attached to the bottom body 32 and pushed out of the mounting hole 18, and the fragments can be cleaned up more efficiently.

The remaining configuration of the tire rim mounting device 42 of the fourth embodiment is the same as that of the first embodiment. Therefore, description of the configuration other than the above is omitted.
As shown in FIG. 5 (e), the tire rim mounting device 42 of the fifth embodiment is different from the first embodiment in that the anti-scattering member 46 is formed by a covering member 48 that covers the entire surface of the permanent magnet 9. It is a point that has been.

That is, the entire surface of the permanent magnet 9 of the fifth embodiment is covered with the coating member 48 made of a nonmagnetic material. The covering member 48 is made of a synthetic resin such as rubber or elastomer, or a metal such as copper or aluminum, so that the coated permanent magnet 9 can be protected from an external impact.
If the covering member 48 is provided over the entire surface of the permanent magnet 9 in this way, even if the permanent magnet 9 is broken, the fragments are not scattered.

The remaining configuration of the tire rim mounting device 42 of the fifth embodiment is the same as that of the first embodiment. Therefore, description of the configuration other than the above is omitted.
As shown in FIG. 6, the tire rim mounting device 42 of the sixth embodiment is mainly different from the second embodiment in that the lid 30 is formed so as to be fitted from the inside of the case body. A through hole 28 that is screwed with the guide member 29 is formed, and an outer peripheral surface of the case body 31 and an inner peripheral surface of the mounting hole 18 are formed so as to be screwed together.
The case body 31 is inserted into the mounting hole 18 so that the lower opening faces the upper rim 4. The opening on the rim mounting side of the case body 31 is formed with a diameter that is slightly smaller than the inner diameter of the case body 31, and a lid body 30 made of a magnetic material is attached from the inside of the case body 31. The permanent magnet 9 is covered so that the outer periphery of the lid 30 is in contact with the inner peripheral surface of the case body 31.
The lid 30 is formed in a shape in which two discs having different diameters are overlapped, with a large diameter portion fitted on the inner periphery of the case body 31 and a small diameter portion fitted on the opening. . The thickness of the small diameter portion (vertical height) is set to be equal to or less than the depth of the opening (vertical height).
According to the lid body 30 and the case body 31 as described above, the lid body 30 can be easily fixed to the case body 31.
If the guide member 29 and the through hole 28, and the case body 31 and the mounting hole 18 are formed to be screwed together as in the sixth embodiment, the guide member 29 is rotated with respect to the through hole 28. Since the position can be finely adjusted while rotating the case body 31 with respect to the mounting hole 18 to support the permanent magnet 9, the permanent magnet 9 is slowly moved closer to the mounting hole 18 while reliably supporting the permanent magnet 9. It is possible to reliably prevent the permanent magnet 9 from violently hitting the bottom of the mounting hole 18 and being damaged. Further, since the case body 31 inserted into the mounting hole 18 is attached by screwing, the permanent magnet 9 does not fall out of the mounting hole 18.
Further, a strong pushing force can be applied to the permanent magnet 9 by the guide member 29 screwed into the through hole 28 configured like a screw jack, and the guide member 29 is rotated with respect to the through hole 28. However, the permanent magnet 9 can be gradually and reliably extracted from the mounting hole 18.
In the sixth embodiment, the outer peripheral surface of the case body 31 and the inner peripheral surface of the mounting hole 18 are screwed together, and the outer peripheral surface of the guide member 29 and the inner peripheral surface of the through hole 28 are screwed together. Has been described as an example. However, only the outer peripheral surface of the case body 31 and the inner peripheral surface of the mounting hole may be screwed together, or only the outer peripheral surface of the guide member 29 and the inner peripheral surface of the through hole 28 may be mutually connected. You may comprise so that it may screw together.

In the sixth embodiment, a detachable jig 37 for rotating the case body 31 can be attached to the lower side (rim attachment side) of the case body 31. In this case, a plurality of (for example, four) engaging recesses 38 are formed on the lower end surface of the case body 31 at regular intervals around the rotational axis of the guide member 29. The engaging recess 38 is formed in a concave shape upward, and is formed so as to be engageable with the engaging protrusion 39 of the jig 37 from below the case body 31. As a result, when the jig 37 is rotated in either direction (a) or (a ′), the case body 31 can be easily rotated with respect to the mounting hole 18.
Moreover, in 6th Embodiment, while forming the recessed groove part along outer periphery in a part of case body 31, the screw hole into which the screw 41 engaged with the said recessed groove can be screwed can be formed in a flange part. By engaging the screw 41 with the concave groove, it is possible to prevent the case body 31 and the mounting hole from being loosened.
Moreover, in 6th Embodiment, you may add the baseplate which contact | abuts the end surface of the case body which opposes this to the bottom part side of a mounting hole like 4th Embodiment.

The present invention is not limited to the above-described embodiments, and the shape, structure, material, combination, and the like of each member can be appropriately changed without changing the essence of the invention.
In the above embodiment, the mounting device 42 that mounts the upper permanent magnet 9 in the mounting hole 18 of the upper spindle 14 has been described as an example. However, the tire rim mounting device 42 of the present invention can also be applied to a device for mounting the lower permanent magnet 10 in the mounting hole 21 of the lower spindle 16.

  In the above embodiment, the permanent magnet 9 is formed in a columnar shape and the mounting hole 18 for inserting the permanent magnet 9 is illustrated in a bottomed cylindrical shape. However, the shape of the permanent magnet 9 is not limited to a cylindrical shape, and the mounting hole 18 can be appropriately changed in shape according to the shape of the permanent magnet 9. For example, when the permanent magnet 9 has a polygonal column shape, the mounting hole 18 may be formed in a bottomed polygonal cylinder shape.

  In the present invention, the method for fixing the flange portion and the lid, the flange portion and the case body, and the case body and the lid body are not particularly limited as long as they can be fixed. For example, a screw part may be formed and screwed to the inner periphery of the mounting hole of the flange part and the outer periphery of the cover body, and the cover body may be fixed to the mounting hole of the flange part with an adhesive or the like. May be. The same applies to the flange portion and the case body, and the case body and the lid body.

  In the above-described embodiment, the permanent magnet 9 is mounted in the bottomed mounting hole 18 formed in the upper mounting surface 43, and the upper rim 4 is attached to the upper mounting surface 43 using the permanent magnet 9. An example of magnetized is shown. However, the upper rim 4 may be configured not to be magnetically attached to the upper mounting surface 43 in a face-on state. For example, an upper rim engaging surface portion that protrudes downward may be provided on the upper mounting surface 43, and the upper rim 4 may be magnetically attached to the upper mounting surface 43 via the upper rim engaging surface portion. This is preferable because an impact at the time of magnetic attachment of the upper rim 4 is hardly transmitted to the permanent magnet 9 and damage to the permanent magnet 9 can be prevented.

It is a front view of the tire inspection apparatus provided with the mounting apparatus of the tire rim of this invention. It is an enlarged view of the upper spindle of a tire inspection apparatus. It is an enlarged view of the lower spindle of a tire inspection apparatus. It is a figure which shows the arrangement | positioning relationship of the permanent magnet in the flange part of an upper spindle. It is sectional drawing which shows the mounting apparatus of the tire rim of 1st-5th embodiment. It is sectional drawing which shows the mounting apparatus of the tire rim of 6th Embodiment.

DESCRIPTION OF SYMBOLS 1 Tire inspection apparatus 2 Conveyance roller 3 Frame 4 Upper rim 5 Lower rim 6 Upper spindle housing 7 Lower spindle housing 8 Drum part 9 Upper permanent magnet 10 Lower permanent magnet 13 Drive motor 14 Upper spindle 15 Engagement part 16 Lower spindle DESCRIPTION OF SYMBOLS 17 Upper flange part 18 Upper mounting hole 20 Lower flange part 21 Lower mounting hole 22 Rotating drum 23 Drum support body 24 Slide rail 28 Through hole 29 Guide member 30 Lid body 31 Case body 32 Bottom body 37 Jig 38 engagement recess 42 mounting device 43 upper mounting surface 44 shaft expansion / contraction part 45 lower mounting surface 46 scattering prevention member 48 covering member T tire

Claims (6)

Mounted on the spindle provided in the tire inspection device, a mounting surface of the rim is formed on the tip side of the spindle, and the magnetic force of the permanent magnet inserted into the bottomed mounting hole provided on the mounting surface is obtained. In a tire rim mounting apparatus that is used to mount the rim on the spindle,
The said mounting hole, said as a scattering prevention member for the permanent magnet to prevent scattering of fragments when damaged, the lid closing the opening of the mounting hole be formed of a nonmagnetic material is provided and,
The lid is provided in the opening of the mounting hole so as to cover the permanent magnet , and the surface of the lid facing the rim is disposed at a position deeper than the mounting surface. A tire rim mounting device. Mounted on the spindle provided in the tire inspection device, a mounting surface of the rim is formed on the tip side of the spindle, and the magnetic force of the permanent magnet inserted into the bottomed mounting hole provided on the mounting surface is obtained. In a tire rim mounting apparatus that is used to mount the rim on the spindle,
The mounting hole is provided with a lid that is made of a magnetic material and closes the opening of the mounting hole as a scattering prevention member for preventing scattering of fragments when the permanent magnet is damaged,
The permanent magnet is wrapped in a case body made of a nonmagnetic material having an opening at least at one end, and the opening of the case body is inserted into the mounting hole so as to face the rim.
The lid body covers the permanent magnet in such a manner that the outer periphery of the lid body is in contact with the inner periphery of the case body;
Facing surfaces of the rim of the lid, mounting device features and to filter unpleasant rim that is recessed from the mounting surface flush or the mounting surface. The opening is formed smaller than the inner diameter of the case body,
The said cover body is provided with the small diameter part fitted into opening of the said case body, and the large diameter part which is formed in a larger diameter than this small diameter part, and fits in the inner periphery of the said case body. The tire rim mounting device according to claim 2. The opening is formed smaller than the inner diameter of the case body,
The said cover body is provided with the small diameter part fitted into opening of the said case body, and the large diameter part which is formed in a larger diameter than this small diameter part, and fits in the inner periphery of the said case body. The tire rim mounting device according to 2 or 3 . Mounted on the spindle provided in the tire inspection device, a mounting surface of the rim is formed on the tip side of the spindle, and the magnetic force of the permanent magnet inserted into the bottomed mounting hole provided on the mounting surface is obtained. In a tire rim mounting apparatus that is used to mount the rim on the spindle,
A lid that is made of a non-magnetic material and covers the permanent magnet is provided in the mounting hole as a scattering prevention member for preventing scattering of fragments when the permanent magnet is broken. The surface facing the rim is arranged flush with the mounting surface or at a position deeper than the mounting surface,
A through hole is provided on the bottom surface side of the mounting hole from the outside of the spindle into the mounting hole, and a bottom plate that covers the entire bottom surface and is in contact with the permanent magnet is mounted on the bottom surface of the mounting hole. mounting device features and to filter unpleasant for the rim. On the bottom surface side of the mounting hole, a through hole is provided from the outside of the spindle to the bottom surface of the mounting hole,
The tire rim mounting device according to claim 2, wherein the case body is bottomed.

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