JPS5850911B2 - Wheel Lee - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a wheel dolly used for attaching or removing wheels of an automobile.

2. Description of the Related Art To install or remove a wheel on an automobile, the vehicle body is usually lifted up using jacks, which is one of the important and difficult tasks during automobile maintenance.

In the past, various types of wheel dollies have been developed for this purpose, but none of them satisfactorily meet the various conditions required for wheel dollies. It is necessary to exactly match the , but there is no easy way to do this.

The present invention aims to eliminate the above-mentioned drawbacks and to provide a wheel dolly which has a relatively simple construction and allows wheels to be mounted and removed easily and efficiently.

An embodiment of the present invention will be described below with reference to the drawings.

1 to 3, reference numeral 1 denotes a rectangular base, and a pair of wheels 2a and 2b are mounted approximately in the center on both sides of the base 1. Also, a pair of casters 3a and 3b are installed at the front and rear.

In particular, these casters 3a and 3b are rotatable only in the front and rear directions, and are designed to have a certain amount of clearance from the floor so that they are slightly lifted above the floor when the base 1 is horizontal.

Reference numeral 4 denotes a bundle for operating this wheel dolly.

A frame 5 is provided above the base 1, and the frame 5 and the base 1 are connected by link mechanisms 5a and 5b.

The frame 5 has a shaft 7 rotatably supported at one end of the base 1.
By operating the , the position can be changed up and down using a configuration described later.

A substrate 5' is integrally fixed to the upper part of the frame 5, and elongated small diameter rollers 8a are provided on both sides of the substrate 1.

ab, 9a, and 9b are rotatably supported.

These rollers 8a, 8b, 9a, 9b are for placing the wheel W thereon.

Further, a wheel receiver 10 made of a substantially trapezoidal frame is formed on one side of the base 1.

Rings 11a and 11b made of, for example, an elastic material are rotatably mounted on the wheel receiver 10.

These rings 11a, 11b connect the wheel W to the roller 8.
It is placed on a, sb, 9a, and 9b, and when it is rotated, it comes into contact with the tire portion thereof to facilitate rotation.

Further, in the figure, reference numerals 12a and 12b are supports for mounting a wheel holder, which will be described later, when there is a single wheel.

Note that this wheel door IJ- is configured to be used when there are normally two wheels W.

The link mechanism 5a is rotated by the rotation of the shaft 7 described above.

4th about the configuration for raising and lowering the frame 5 via 6b
This will be explained using figures.

In FIG. 4, 20 is a bundle, 21 is a thrust bearing, 22 is a rotating shaft bearing, 23a and 23b are supports thereof, 24 is a collar, 25 is a rotating body equipped with a pair of rotating rods, and 26 is a rotating body provided with a pair of rotating rods. It is a supported columnar body and has an internal thread 27 in its center.

Further, 28 is a shaft, and 29a to 29d are spring pins.

A male thread is formed at the tip of the shaft 7, and this is a thrust bearing 21. It is screwed into the internal thread 27 of the columnar body via the rotation bearing body 22 and the collar 24.

Therefore, by rotating the shaft 6 by the bundle 20, the columnar body 26 moves in the direction of the center line of the shaft 6, and by rotating the link mechanism 6a via the rotary body 25 accordingly, the frame 5 is raised and lowered. It is something that can be done.

Next, the case where this wheel dolly is used to perform operations such as removing and installing the wheel W will be explained.

Note that the wheels W are double wheels, and to first describe the case of removing them, prepare to remove the wheels W by lifting the car body using jacks or the like.

In this state, this wheel dolly is inserted below the wheel W by operating the bundle 4.

At this time, it is necessary to align the axis of the wheel W with the center line of the wheel dolly, but by floating this wheel dolly so that only the wheels 2 a t 2 b in the center are in contact with the floor. It is easier to change direction,
It can be placed in an appropriate position.

In this way, the shaft 7 is rotated, and the frame 5 and the substrate 5 are
' through rollers 8a, ab, 9a, 9b
is raised, and the wheel W is placed on top of it.

In this state, the wheel dolly is bent out, and the base 1 is swung back and forth around the axes of the wheels 2a and 2b by utilizing the fact that the front and rear casters 3a and 3b are floating above the floor. By doing so, it is possible to make it easier for the wheel W to escape from the insert member or other attached portion.

In this case as well, since the casters 3a and 3b are rotatable only in the front and rear directions, when the base 1 swings, the casters 3a and 3b do not change their direction unnecessarily and become a hindrance to escape.

The wheel W includes rollers 8a, 8b, 9a,
Since it stands upright on 9b, it can be brought to the required position by further moving the wheel dolly.

When attaching the wheel W to the vehicle body, this can be easily done by reversing the above steps and order.

In this case as well, there are wheels 2a and 2b in the center, and front and rear casters 3a and 3b are floating above the floor, so it is easy to change direction, the base 1 can be rocked back and forth, and the board 5' The rollers 8a, 8b, 9a, 9b can be rotated, and there is also a wheel support 10, and a ring 1 attached thereto.
The configuration such as being able to rotate 1a and 1 lb is the wheel W.
This works effectively to facilitate the installation work.

The above is a case where the wheel W is a double wheel, but if it is a single wheel, its uprightness will be poor, so as shown in FIG. 5, the above-mentioned support body 12a.

Support ring 3 formed by a pipe in the part 12b
By inserting the legs 31a and 31b of 0 and supporting the wheel, the wheels can be attached and removed.

This invention is as follows: ■) By providing wheels on both sides of the base, relatively large diameter wheels can be used, and since the front and rear casters are floating above the floor, changing direction is easy and efficient movement is possible. What I did.

2) The casters floating above the floor surface are capable of rotating only in the front-back direction, and the base is swung back and forth, making it easy to remove and install the wheels.

3) The board elevating mechanism is composed of a shaft with a male thread, a rotating body with a female thread that engages with the male thread, and is connected to a link mechanism, so that it is simplified and can be easily operated with a small rotational force. What I tried to do to get it.

4) A roller is provided for placing the wheel, and a wheel receiver is provided so that a ring attached to the roller can be rotated in contact with the wheel to facilitate rotation of the wheel.

It is characterized by the fact that the structure has been simplified as much as possible, and each structure has been concentrated so that the wheel can be easily and efficiently removed or installed without losing stability. be.

Note that the present invention is not limited to the above-described embodiments, and can be implemented with various modifications without changing the gist.

In the embodiment described above, one caster is provided at the front and the rear, but the number may be increased.

Further, the mechanism for raising and lowering the frame and the board is not limited to the one shown in the drawings, and other mechanisms that perform the same function can be used.

As described above, according to the present invention, it is possible to provide a wheel dolly with a relatively simple structure that allows wheels to be attached and removed easily and efficiently.

[Brief explanation of drawings]

Fig. 1 is a plan view of an embodiment of the present invention, Fig. 2 is a side view, Fig. 3 is a rear view, Fig. 4 is an exploded perspective view of the mechanism for raising and lowering the frame and board, and Fig. 5 shows the wheels. It is a block diagram of the wheel support body used in the case of a single. 1...Base, 2a, 2b...Wheel, 3
a, 3b... Caster 4... Handle, 5... Frame, 5'... Board, 5a, 6b... Link mechanism, 7...
...Shaft, 8a, 8b, 9a, 9b...Roller 10...Wheel holder, 11a, 11b...
...Ring, 12a, 12b...Support, 2
0... Handle, 21... Thrust bearing, 22... Rotating shaft bearing, 23a, 2
3b...Support, 24...Color, 2
5... Rotating body, 26... Column body, 27
...Female thread, 28...Shaft, 29a-2
9d... Spring pin, 30... Support ring, 31a. 31b... Legs.

Claims (1)

[Claims] 1. A base with a pair of wheels installed approximately at the center in the longitudinal direction of both sides and casters facing each other in the front and rear, a base plate connected to this base by a link mechanism and provided with the ability to move up and down, and a thrust The shaft is supported by a bearing and a rotating shaft support and has a male thread at one end, and a rotating body that has a female thread that engages with the male thread and is connected to the link mechanism. an elevating mechanism for rotating the link mechanism; at least a pair of elongated small diameter rollers provided on the substrate for placing the wheel; and a ring that rotates in contact with the wheel; The caster is rotatable only in the front-back direction, and is mounted in a state where it is slightly lifted from the floor when the base is supported horizontally. wheel dolly-0