JP3205395U - Tire attachment / detachment device - Google Patents

Abstract

Provided is a tire attaching / detaching device in which a tire and a wheel can be attached / detached without damaging the wheel. A turntable having N chuck claws and a metal plate-like body, a table driving unit for rotating the turntable with a vertical direction as a rotation axis, and N chuck claws. And a chuck claw driving unit that moves the plate in the direction close to or away from the rotation axis R, and a resin plate 24 is disposed on the upper surface of the metal plate 23. [Selection] Figure 1

Description

  The present invention relates to a tire attaching / detaching device for removing a tire from a wheel or attaching it to a wheel.

  A tire attaching / detaching device (tire changer) is used in order to perform removal work for removing a tire from a wheel by one worker and attachment work for attaching a tire to a wheel (see, for example, Patent Document 1). FIG. 3 is an external perspective view showing a conventional tire attaching / detaching device, and FIG. 4 is an exploded perspective view of the turntable shown in FIG.

  The tire attaching / detaching device 101 includes a substantially rectangular parallelepiped base 10, a horizontal turntable 120 disposed above the base 10, a column 11 on which a mounting head, a horizontal axis, a vertical axis, and the like are attached, and a chuck claw. 21, a chuck claw driving unit 30 that moves the table 21, a table driving unit 40, and a plurality of operation pedal units 12 for controlling the chuck claw driving unit 30 and the table driving unit 40.

The turntable 120 includes, for example, a rectangular metal plate (for example, iron) 23 having a thickness of 20 mm and four (N) chuck claws 21 (21a to 21d).
The center of the turntable 120 is connected to the table drive unit 40, and the turntable 120 is rotatable by the table drive unit 40 with the vertical direction as the rotation axis R. Further, the turntable 120 is formed with four (N) sliding grooves 22 (22a to 22d) extending from the center toward each corner, and each chuck is provided in each sliding groove 22a to 22d. The claws 21a to 21d are arranged.

  The chuck claw driving unit 30 includes four (N) members 31 (31a to 31d) to which the chuck claws 21a to 21d are attached, a horizontal square ring-shaped rotating plate 32, and four (N) links. 33 (33a to 33d) and a cylinder device 34 connected to the pair of L-shaped members 31a and 31c.

The first link 33a connects the first L-shaped member 31a and the first corner of the rotating plate 32, the second link 33b connects the second member 31b and the second corner of the rotating plate 32, and the third link. 33 c connects the third L-shaped member 31 c and the third corner of the rotating plate 32, and the fourth link 33 d connects the fourth member 31 d and the fourth corner of the rotating plate 32.
The first chuck claw 21a is attached to a predetermined position on the upper surface of the first L-shaped member 31a, the second chuck claw 21b is attached to a predetermined position on the upper surface of the second member 31b, and the third chuck claw 21c is attached to the third L-shaped member 31c. The fourth chuck claw 21d is attached to a predetermined position on the upper surface of the fourth member 31d.

  The cylinder device 34 has one end connected to the lower part of the first L-shaped member 31a and the other end connected to the lower part of the third L-shaped member 31c. The first L-shaped member 31a and the third L-shaped member 31c are expanded and contracted. Move inward (proximity direction) or outward (separation direction) by a predetermined distance (for example, 10 inches to 20 inches), thereby changing the distance between the first L-shaped member 31a and the third L-shaped member 31c. It is like that.

  According to such a chuck claw driving unit 30, when the distance between the first L-shaped member 31a and the third L-shaped member 31c changes due to the expansion and contraction of the cylinder device 34, the rotation connected to the first link 33a and the third link 33c. The plate 32 rotates, and the distance between the second pair of second members 31b and the fourth member 31d also changes by the second link 33b and the fourth link 33d connected to the rotary plate 32. That is, the four chuck claws 21a to 21d are moved inward (proximity direction) or outward (separation direction) in synchronization by the chuck claw driving unit 30.

  Thereby, when a wheel or a wheel with a tire is arranged at a predetermined position, the lower rim portion of the wheel is held by the four chuck claws 21a to 21d from four directions, and the wheel or the wheel with a tire rotates together with the turntable 120. It rotates on the axis R.

Here, a description will be given of a removing operation in which the worker removes the tire from the wheel using the tire attaching / detaching device 101.
First, the operator moves the four chuck claws 21a to 21d inward using the operation pedal portion 12 while disposing the tire-equipped wheel at a predetermined position, thereby moving the lower rim portion of the wheel to four pieces. The chuck claws 21a to 21d are attached. Next, the worker interposes the mounting head between a part of the upper bead part of the tire and a part of the upper rim part of the wheel. Next, the operator lifts a part of the upper bead portion on the upper rim portion using the tire lever like a lever, and uses the operation pedal 12 to rotate the turntable 120 around the rotation axis R while moving the upper bead. Pull out the entire circumference of the part above the upper rim part. Finally, the operator separates the tire and the wheel by pulling out the lower bead portion to the upper side of the upper rim portion using the tire lever and the mounting head.
In addition, the attachment operation | work using the tire attaching / detaching apparatus 101 at the time of mounting | wearing is performed in the reverse procedure to the above.

JP-A-7-1930

By the way, in recent years, in order to reduce the weight of a vehicle, the use of an aluminum wheel instead of a steel wheel has been increasing.
However, since the plate-like body 23 of the turntable 120 is made of metal, if the metal plate-like body 23 comes into contact with the aluminum wheel at the time of attachment or removal, the wheel may be damaged or the wheel may be painted. Sometimes it peeled off. That is, an aluminum wheel is easily damaged due to its low hardness, and is expensive, so that damage at the time of damage is large.
Therefore, an object of the present invention is to provide a tire attaching / detaching device that can remove a tire from a wheel or attach it to a wheel without damaging the wheel.

  A tire attaching / detaching device of the present invention made to solve the above problems includes a turntable having N chuck claws and a metal plate-like body, and a table drive for rotating the turntable around a vertical direction as a rotation axis. And a chuck claw driving unit that moves the N chuck claws in a direction close to or away from the rotation shaft, and an upper surface of the metal plate-like body includes: A resin plate-like body is arranged. N is a natural number.

  According to the tire attaching / detaching device of the present invention, since the resin plate-like body whose hardness is lower than that of aluminum is arranged on the upper surface of the metal plate-like body, the tire and the wheel can be attached and detached without damaging the wheel. be able to.

(Means and effects for solving other problems)
Moreover, in the said device, the said resin-made plate-shaped object is divided | segmented into N pieces, You may make it attachable and detachable to the upper surface of the said metal plate-shaped object.

Furthermore, in the said device, you may make it the peripheral part of the upper surface of the said resin-made plate-shaped body be higher than the center part.
According to the tire attaching / detaching device of the present invention, even if a valve core, a valve cap, or the like is placed on the central portion of the upper surface of the resin plate-like body, it does not fall, so that it can be used as a temporary tray.

1 is an external perspective view showing a tire attaching / detaching device according to the present invention. The typical sectional view showing the resin protector and plate-like object in Drawing 1. The external appearance perspective view which shows the conventional tire attaching / detaching apparatus. The disassembled perspective view which shows the turntable in FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments described below, and includes various modes without departing from the spirit of the present invention.

FIG. 1 is an external perspective view showing a tire attaching / detaching device according to the present invention. In addition, about the thing similar to the tire attaching / detaching apparatus 101 mentioned above, description is abbreviate | omitted by attaching | subjecting the same code | symbol.
The tire attaching / detaching device 1 includes a substantially rectangular parallelepiped base 10, a horizontal turntable 20 disposed above the base 10, a column 11 on which a mounting head, a horizontal axis, a vertical axis, and the like are attached, and a chuck claw. A chuck claw driving unit 30 (see FIG. 4) that moves the table 21, a table driving unit 40, and a plurality of operation pedal units 12 for controlling the chuck claw driving unit 30 and the table driving unit 40.

  The turntable 20 includes, for example, a rectangular metal plate 23 having a thickness of 20 mm, four (N) chuck claws 21 (21a to 21d), and four (N) triangular resins. And a protector (resin plate-like body) 24 (24a to 24d).

  The center of the turntable 20 is connected to the table driving unit 40, and the turntable 20 is rotatable by the table driving unit 40 about the vertical direction as the rotation axis R. The turntable 20 is formed with four (N) sliding grooves 22 (22a to 22d) extending from the center toward each corner, and each chuck is in each sliding groove 22a to 22d. The claws 21a to 21d are arranged. The four chuck claws 21a to 21d are moved by a predetermined distance (for example, 10 inches to 20 inches) inward (proximity direction) or outward (separation direction) in synchronization by the chuck claw driving unit 30. It has become.

  FIG. 2 is a schematic cross-sectional view of the resin protector 24 and the plate-like body 23 shown in FIG. The four resin protectors 24a to 24d are arranged on the entire upper surface of the plate-like body 23 so that the apex of the triangle faces the center (rotation axis R) so as to avoid the four sliding grooves 22a to 22d. . At this time, the bottom surface portions of the triangular resin protectors 24 a to 24 d are arranged so as to cover (wrap around) the outer peripheral side surface and the outer peripheral edge portion of the bottom surface of the plate-like body 23. Thereby, even if the corners of the metal plate-like body 23 come into contact with the aluminum wheel, the wheel is not damaged.

Further, screw holes 25 are formed in the respective corner portions of the triangular resin protectors 24 a to 24 d, and are fixed to the screw holes 27 formed in the plate-like body 23 with screws 26. Thereby, the resin protectors 24 a to 24 d can be attached to and detached from the plate-like body 23.
And the thickness of the peripheral part of resin protector 24a-24d upper surface becomes 10 mm, for example, the thickness of the center part of resin protector 24a-24d upper surface becomes 5 mm, for example, and a peripheral part is higher than a center part, resin protector Even if a valve core, a valve cap, or the like is placed at the center of the upper surfaces of 24a to 24d, it does not fall.

  Examples of the resin include those having lower hardness than aluminum, such as urethane resin and rubber.

  As described above, according to the tire attaching / detaching device 1 according to the present invention, since the resin protector 24 (24a to 24d) is disposed on the upper surface of the metal plate-like body 23, the resin protector 24, the wheel, The tire can be removed from the wheel or attached to the wheel without damaging the aluminum wheel even if the wheel contacts.

<Other embodiments>
(1) In the tire attachment / detachment device 1 described above, the configuration including the four triangular resin protectors 24 a to 24 d is shown, but one resin plate is the entire upper surface of the metal plate 23. It is good also as a structure arrange | positioned.

(2) In the tire attaching / detaching device 1 described above, the resin protector 24 is configured to be attachable to and detachable from the metal plate-like body 23, but may be configured to be adhered to the plate-like body 23. Good.

  INDUSTRIAL APPLICABILITY The present invention can be suitably used for a tire attaching / detaching device for removing a tire from a wheel or attaching it to a wheel.

DESCRIPTION OF SYMBOLS 1 Tire attachment / detachment apparatus 20 Turntable 21a-21d Chuck claw 23 Plate-shaped body 24a-24d Resin protector (plate-shaped body)
30 Chuck claw drive unit 40 Table drive unit

Claims (3)

A turntable having N chuck claws and a metal plate;
A table driving section for rotating the turntable around a vertical direction as a rotation axis;
A tire attachment / detachment device comprising: a chuck claw driving unit that moves the N chuck claws in a direction close to or away from the rotation shaft,
A tire attaching / detaching device, wherein a resin plate-like body is disposed on an upper surface of the metal plate-like body. The resin plate-like body is divided into N pieces,
The tire attaching / detaching device according to claim 1, wherein the attaching / detaching is possible on an upper surface of the metal plate-like body.   The tire attaching / detaching device according to claim 1, wherein a peripheral edge portion of an upper surface of the resin plate-like body is higher than a central portion.

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