JP6703557B2 - Tire lift for wheel balancer - Google Patents

Description

The present invention relates to a tire lift for lifting and mounting a wheel on which a tire is mounted on a rotating shaft of a wheel balancer.

In order to correct an unbalanced state of a wheel equipped with a tire (hereinafter, simply referred to as “wheel”), it is common to mount the wheel on a rotating shaft of a wheel balancer as shown in Patent Document 1 or Patent Document 2. Widely implemented.

When attaching a wheel to the rotating shaft of a wheel balancer, a lightweight wheel can be relatively easily lifted and attached by one worker, but it can also be used for passenger cars with large diameter wheels, light trucks, large trucks, etc. In the case of a heavy wheel, it is difficult for an operator to lift the wheel by himself or herself every time depending on the wheel. Therefore, a tire lift is used to lift and attach the wheel to the position of the rotating shaft.

FIG. 9 is an explanatory diagram showing an example of a conventional tire lift together with a wheel balancer.
In the conventional tire lift B, a slide member 23 that slides toward the rotating shaft 1 of the wheel balancer A is provided on a lift plate 22 that vertically moves in a horizontal posture by a lift mechanism 21 that includes a telescopic arm combined in a cross shape. The wheel D is placed at a fixed position on the slide member 23. The tire lift B is pre-aligned so that the center of the shaft hole 8 of the mounted wheel D moves up and down along a vertical line orthogonal to the extension line of the axis of the rotating shaft 1 of the wheel balancer A. Installed. The elevating mechanism 21 is formed to be operated by a handle 25 of an operation unit 24 provided on the elevating plate 22. In addition, instead of the handle for manual operation, there is also a method of using a foot pedal.

When mounting the wheel D on the rotating shaft 1, the handle 25 is operated to raise the elevating plate 22 to a position where the center of the shaft hole 8 of the wheel D coincides with the axis of the rotating shaft 1, and then the slide member 23 is attached. The shaft hole 8 of the wheel D is inserted into the rotating shaft 1 by moving the rotating shaft 1 in the direction of the rotating shaft 1 (leftward in the drawing). Then, a lock nut (not shown) is screwed into the rotary shaft 1 together with the coupling to fix the wheel D, and the slide member 23 is retracted to complete the attachment.

JP, 2005-049290, A JP, 2005-121597, A

However, in the tire lift B having such a configuration, when the lift plate 22 is raised to align the center of the shaft hole 8 of the wheel D with the shaft center of the rotary shaft 1, the operator holds the handle 25 with one hand. It is necessary to look into the tip of the rotary shaft 1 from the shaft hole 8 of the wheel D to perform positioning while operating the pedal or the foot pedal with one leg. It was hanging.
Further, the rotary shaft 1 of the wheel balancer A can be used after being subjected to precise shaft adjustment, and when the wheel D is attached, the wheel D is accidentally bumped against the rotary shaft 1 to give a shock. Depending on the degree of impact, it may be necessary to adjust the axis of the wheel balancer A again, and it is necessary to pay close attention.

Therefore, it is an object of the present invention to provide a wheel balancer tire lift capable of easily and accurately aligning the center of the wheel shaft hole with the axis of the rotating shaft.

In order to solve the above problems, the present invention takes the following technical means. That is, the present invention is a wheel balancer tire lift used for attaching a wheel to a rotating shaft of a wheel balancer, including a pedestal and an elevating unit provided on an upper surface of the pedestal so as to be able to ascend and descend via an elevating mechanism. , With the shaft hole of the wheel facing the tip end surface of the rotating shaft of the wheel balancer, place the wheel in a fixed position, and slide along the axial direction of the rotating shaft from a position separated in the extension direction of the rotating shaft. Alignment is performed by irradiating a laser beam onto the tip end surface of the rotating shaft from the side opposite to the rotating shaft with the slide member attached to the elevating part and the wheel mounted on the slide member interposed therebetween. consists of at least one laser emitter for projecting a mark, the alignment mark of the laser beam is at a position away in the extending direction of the rotary shaft, the periphery of the shaft hole of the wheel to rise is placed on the lifting unit The configuration is such that it is projected onto a portion.
Here, it is preferable that the alignment mark of the laser beam is formed in a figure such as a cross mark, a cross mark, a US mark, a Y mark, or a star mark that shows the center point.

Since the tire lift of the present invention is configured as described above, by visually confirming that the alignment mark is projected on the peripheral portion of the axial hole of the wheel in the process of raising the wheel, by stopping the elevating part at that position, There is an effect that the shaft hole of the wheel and the rotary shaft can be easily and accurately aligned with each other, and the efficiency of the wheel balance adjustment work can be improved.

In the above invention, it is preferable that the laser light emitter is held by a support member fixed to the mount, and the laser light emitter is attached to the support member so as to be adjustable in vertical position.
As a result, the mounting height of the laser light emitting device can be adjusted according to the height position of the rotation axis of the wheel balancer, and the wheel balancer of various manufacturers can be supported.

The perspective view which shows the tire lift of this invention. The side view which shows the usage type of the tire lift of FIG. The side view which shows the 1st step of the wheel mounting process using this invention. The side view which shows the 2nd step of a wheel attachment process. The front view which shows the alignment mark at the time of laser beam irradiation. The perspective view which shows another Example of the tire lift of this invention. The partial cross section side view which shows another Example of the tire lift of this invention. The side view which shows another Example of the tire lift of this invention. The side view which shows an example of the conventional tire lift.

Hereinafter, details of the present invention will be described with reference to the drawings showing an embodiment thereof.
The tire lift C according to the present invention is used when the wheel D is attached to the rotary shaft 1 that extends horizontally from the side surface of the wheel balancer A.

Since the wheel balancer A is a well-known one that is generally widely used, its detailed description will be omitted, but generally, the rotary shaft 1 is arranged inside the main body 2 with a predetermined distance. It is rotatably supported by bearings at two places, and by rotating the rotary shaft 1 to which the wheel D is attached at high speed, centrifugal force generated in the wheel D in an unbalanced state acts on both bearings. By detecting the loads acting on both bearings, the unbalance amount and its position are calculated and displayed on the monitor 3. The operator adjusts the balance by attaching a weight (not shown) to the wheel D according to the instruction displayed on the monitor 3.

As shown in FIGS. 1 to 4, a tire lift C according to the present invention includes a pedestal 4, and an elevating plate (elevating portion) 6 provided on the upper surface of the pedestal 4 so as to be able to ascend and descend via an elevation mechanism 5. The slide member 7 is provided so that the wheel D is placed on the elevating plate 6 and can slide horizontally toward the rotation axis 1 of the wheel balancer A.

The slide member 7 has a recess 7a on its upper surface so that the wheel D can be stably mounted at a fixed position in a posture in which the shaft hole 8 (see FIG. 2) of the wheel D is directed toward the tip surface of the rotary shaft 1 of the wheel balancer A. And a pipe frame 7b that supports the side surface of the wheel D to prevent tilting. The pipe frame 7b also serves as a grip portion when the slide member 7 is manually slid.

The elevating mechanism 5 may be any mechanism as long as it can elevate the elevating plate 6 in a horizontal posture, but in the present embodiment, the telescopic arm 5a assembled in an X shape is used as a fluid such as air. A mechanism is used that elevates and lowers the elevating plate 6 by expanding and contracting with a fluid cylinder 5b that operates under pressure. An operation unit 10 such as a handle or a push button for operating the elevating mechanism 5 is provided above the columnar support member 9 fixed to the gantry 4. Although illustration is omitted, the operation unit 10 can be formed by a foot-operated pedal system at a low position that can be operated by legs.

Further, in the tire lift C of the present invention, the laser light emitter 11 that irradiates the tip end surface of the rotating shaft 1 of the wheel balancer A with a laser beam and projects an alignment mark of a cross mark is mounted. The laser light emitter 11 is attached to the support member 9 so that the vertical position thereof can be adjusted. As the vertically adjustable attachment means, for example, the magnet 11a is attached to the back surface of the laser light emitter 11, and the attachment surface of the support member 9 is formed of a magnetic material such as an iron plate and attached by the attraction force of the magnet 11a. Is good. As a result, the mounting height of the laser light emitter 11 can be easily adjusted according to the height position of the rotary shaft 1 of the wheel balancer A manufactured by a different manufacturer.

The laser emitter 11 is arranged at a position where the laser beam irradiates the tip end surface of the rotating shaft 1 and penetrates the shaft hole 8 of the wheel D lifted by the elevating plate 6. When the tip surface of the rotary shaft 1 is irradiated with light passing through the center of the shaft hole 8 of the wheel D, a cross-shaped alignment mark M is formed on the peripheral portion of the shaft hole 8 of the wheel D as shown in FIG. The size of the alignment mark M is set in advance so as to be projected.

In use, first, the tire lift C is installed by setting the position so that the laser beam from the laser emitter 11 of the tire lift C irradiates the center of the tip end surface of the rotating shaft 1 of the wheel balancer A. Next, the elevation plate 6 on which the wheel D is mounted is raised in a state where the laser beam is directed toward the tip end surface of the rotating shaft 1 of the wheel balancer A. When the wheel D is lifted to a position where the laser beam penetrates the center of the shaft hole 8 of the wheel D, the alignment mark M of the cross mark is evenly distributed around the shaft hole 8 of the wheel D as shown in FIG. 5A. Since it is projected, the lift plate 6 is stopped at that position. 5(b) shows the alignment mark M when the wheel D is raised too much, and FIG. 5(c) shows the alignment mark M when the wheel D is lowered too much. As a result, the shaft hole 8 of the wheel D and the rotary shaft 1 can be easily aligned. Then, the slide member 7 is moved in the direction of the rotary shaft 1 to insert the shaft hole 8 of the wheel D into the rotary shaft 1. Then, a lock nut (not shown) together with the coupling is screwed into the rotary shaft 1 to fix the wheel D, and the slide member 7 is retracted to complete the attachment.

In this way, by visually confirming that the alignment mark M is projected on the peripheral portion of the shaft hole 8 of the wheel D while the wheel D is being raised, and stopping the lift plate 6 at that position, it is possible to easily and accurately. The shaft hole 8 of the wheel D and the rotary shaft 1 can be aligned with each other, and the efficiency of the wheel balance adjustment work can be improved.

Another embodiment of the present invention is shown in FIG. In this embodiment, a box-shaped operation unit 9A having an operation unit 10 such as a handle on the top is fixed to the gantry 4, and the above-mentioned laser light emitter 11 is attached to the operation unit 9A. That is, the frame 12 of the operation unit 9A substantially plays the role of the support member 9 described above.
The laser light emitter 11 may be mounted on the front surface of the frame body 12 of the operation unit 9A, but in this embodiment, the frame body 12 is provided with a vertically long mounting groove 13, and the laser light emitter 11 is provided in the mounting groove 13. And the magnets are mounted so that the vertical position can be adjusted by a magnet as in the previous embodiment. As a result, the laser light emitter 11 can be held in a stable state in a good appearance.

Further, another embodiment of the present invention is shown in FIG. In this embodiment, a box-shaped operation unit 9B having an operation portion 10 is attached to the elevating plate 6 and moves up and down together with the elevating plate 6. Therefore, in this case, the vertical support member 9 fixed to the gantry 4 is extended through the elevating plate 6 into the frame 12a of the operation unit 9B, and the laser light emitter 11 is attached to the support member 9. .. Then, a vertically long slit 14 is formed on the front wall surface of the frame 12a so that the laser beam from the laser emitter 11 can be emitted to the outside of the frame 12a. As a result, the laser beam can be emitted at a fixed position regardless of whether the operation unit 9B is raised or lowered. In this case as well, the operation unit 10 can be formed by a foot-operated pedal.

In the above embodiment, an example in which one laser light emitting device 11 is provided is shown, but it is also possible to provide a plurality of laser light emitting devices. For example, in the embodiment shown in FIG. 8, the two laser emitters 11 and 11 are held by the support member 9 at symmetrical positions with respect to the extension line L of the axis of the rotary shaft 1. The laser beams emitted from these laser emitters 11 and 11 are arranged to irradiate the tip end surface of the rotary shaft 1, and are mounted on the elevating plate 6 so as to rise and the shaft hole 8 of the wheel D. The peripheral portion of is projected evenly at symmetrical positions.
As a result, similarly to the previous embodiment, it is visually confirmed that the alignment mark M of the laser beam is projected onto the peripheral portion of the shaft hole 8 of the wheel D (see FIG. 5) during the ascending process of the wheel D, and at that position. By stopping the lift plate 6, the shaft hole 8 of the wheel D and the rotary shaft 1 can be aligned easily and accurately.
The number of laser light emitters 11 is not limited to two, and three or four laser light emitters 11 may be provided at equal intervals on a concentric circle centered on the extension line L of the rotary shaft 1.

The representative examples of the present invention have been described above, but the present invention is not necessarily limited to the above embodiments. For example, in the above embodiment, the magnet 11a was used as the attachment means for attaching the laser light emitter 11 to the support member 9, but it may be attached using a metal fitting such as a screw. Further, the alignment mark M of the laser beam is not limited to the above-described cross mark, but may be a figure such as an X mark, a U.S. mark, a Y mark, or a star mark whose center point is known. Further, the operation unit 10 is not limited to the lever, and may be any one that can operate the elevating mechanism such as an elevating button, a foot-operated pedal, and a remote controller. Further, in the above embodiment, the wheel D is placed on the elevating plate 6 so as to elevate and lower, but the present invention is not limited to this, and any elevating part capable of stably elevating the wheel D may be used. For example, instead of the lift plate 6, a pair of lift rods arranged side by side in the horizontal direction may be mounted on this as lift units, or a lift unit for gripping and fixing a part of the wheel D from both sides may be provided. It may be provided. Further, although the fluid cylinder is used as the power source for driving the elevating mechanism 5 in the above-described embodiment, an electric system in which a gear and a motor are combined may be used. Others In the present invention, it is possible to achieve the object and make appropriate modifications and changes within the scope of the claims.

INDUSTRIAL APPLICABILITY The tire lift of the present invention can be used when mounting a wheel on a rotating shaft of a wheel balancer.

A wheel balancer C tire lift D wheel M alignment mark 1 rotating shaft 4 frame 5 lifting mechanism 6 lifting plate (elevating part)
7 slide member 8 shaft hole 9 support member 9A operation unit 9B operation unit 10 operation unit 11 laser light emitter 12 frame 13 mounting groove 14 slit

Claims (7)

A wheel balancer tire lift used to attach a wheel to a rotating shaft of a wheel balancer,
A cradle,
An elevating part provided on the upper surface of this gantry so as to be able to ascend and descend via an elevating mechanism
With the shaft hole of the wheel facing the tip surface of the rotation shaft of the wheel balancer, the wheel can be placed in a fixed position and slid along the axial direction of the rotation shaft from a position separated in the extension direction of the rotation shaft. A slide member attached to the elevating part,
At least one laser light emitter that projects an alignment mark by irradiating a laser beam from a side opposite to the rotary shaft with the wheel placed on the slide member sandwiched therebetween from a side opposite to the rotary shaft ,
For a wheel balancer, wherein the alignment mark of the laser beam is formed so as to be projected on a peripheral portion of a shaft hole of a wheel that is placed on the elevating part and rises at a position separated in the extension direction of the rotation shaft . Tire lift. The number of the laser emitting device is one, and the alignment mark of the laser beam to be emitted penetrates the center of the shaft hole of the wheel mounted on the elevating part and ascending to project the tip end surface of the rotating shaft. At the same time, the tire balancer wheel lift according to claim 1, wherein the peripheral portion of the shaft hole of the wheel is also projected. A plurality of the laser emitters are provided, and alignment marks of laser beams from the laser emitters are formed so as to project a peripheral portion of a shaft hole of a wheel which is placed on the elevating part and rises. The tire lift for a wheel balancer according to claim 1. The tire lift for a wheel balancer according to any one of claims 1 to 3, wherein the alignment mark of the laser beam is formed in a figure such as a cross mark, a cross mark, a U.S. mark, a Y mark, or a star mark whose center point is known. .. The laser emitter is held by a support member fixed to the mount,
The wheel balancer tire lift according to any one of claims 1 to 4, wherein the laser light emitter is attached to the support member so as to be vertically adjustable. Operation unit with an operation unit for operating the lifting mechanism of the lifting portion is attached to said frame, claim frame of the operating unit is formed as the supporting member for holding the laser emitter 5 Tire lift for wheel balancer described in. An operation unit including an operation unit for operating the elevating mechanism of the elevating unit is attached to the elevating unit, and a supporting member fixed to the pedestal is passed through the elevating unit to penetrate the frame of the operation unit. A laser emitter is attached to the support member, and a longitudinal slit is formed on the front wall surface of the frame so that the laser beam from the laser emitter can be emitted to the outside of the frame. The wheel lift for a wheel balancer according to claim 5.

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