JP7112778B1 - Auxiliary device for changing tires - Google Patents

Abstract

An object of the present invention is to facilitate attachment and detachment of a tire. A tire changing assist device (100) includes a rectangular first frame (1) having casters (15) and a spring (17) provided near the top, and portions corresponding to the tops of the first frame (1). The rollers 31 and 32 are arranged in the direction of rotation of the tire, and the second frame 2 is biased by a spring 17 in the vicinity of each top, and has a surface on which the tire rolls. and an inclined plate 232 for guiding the tires to the rollers 31,32. [Selection drawing] Fig. 1

Description

The present invention relates to a tire changing assist device.

Techniques for reducing the load of tire replacement work are known. For example, a plate on which a tire is mounted is pulled by a plurality of springs from the left and right sides of a frame having three sides of a U-shaped frame, one of which is open, and supported in the air. Tire changing aids are known.

JP 2015-85925 A

Patent Document 1 describes that a tire is held by hand, slid on a plate, and rotated to align a tire wheel bolt hole with a hub bolt.

However, when the tire is held by hand and rolled on the plate, the positions of the tire wheel bolt holes and the hub bolts are misaligned. Moreover, it is actually not easy to hold the tire by hand and slide it on the plate, and it is conceivable that a little force is required.
In one aspect, the present invention aims at facilitating mounting and dismounting of a tire.

To achieve the above objects, the disclosed tire changing assist device is provided. This tire change assisting device includes a first rectangular frame having a moving member and an elastic body provided in the vicinity of the top, and each top can be arranged at a portion corresponding to the top of the first frame. a second frame on which rollers capable of rotating the tire in the direction of rotation are arranged, the vicinity of each top of which is urged by an elastic body; and have

In one aspect, the tire can be easily attached and detached.

It is a figure which shows the tire exchange assistance apparatus of embodiment. It is a figure explaining a mode when the 2nd frame is piled up on the 1st frame and arranged. It is a figure explaining an example of the usage method of a tire exchange assistance apparatus.

DETAILED DESCRIPTION OF THE INVENTION A tire change assist device according to an embodiment will be described in detail below with reference to the drawings.

The position, size, shape, range, etc. of each configuration shown in the following drawings may not represent the actual position, size, shape, range, etc., in order to facilitate understanding of the invention. Therefore, the present invention is not necessarily limited to the positions, sizes, shapes, ranges, etc. disclosed in the drawings and the like.
Elements presented in the singular in the embodiments shall include the plural unless the context clearly dictates otherwise.
<Embodiment>
FIG. 1 is a diagram showing a tire changing assist device according to an embodiment.
A tire change assist device 100 of the embodiment has a first frame 1 and a second frame 2 .

The first frame 1 is formed by connecting the ends of elongated bodies 11 and 12 arranged at a predetermined interval with elongated bodies 13 and 14 . The elongated bodies 11 and 12 and the elongated bodies 13 and 14 are connected by, for example, adhesion, welding, or screwing.
The constituent members of the elongated bodies 11, 12, 13, and 14 are not particularly limited, but examples thereof include resins and metals.

The elongated bodies 13 and 14 may be formed of one member, or may be formed by assembling a plurality of members. The same applies to elongated bodies 23 and 24, which will be described later. Although the length of the long bodies 13 and 14 is not particularly limited, for example, the length of two tire widths can be mentioned.
The first frame 1 has a substantially rectangular shape with an opening in plan view.

The elongated bodies 13 and 14 have stepped portions 131 and 131 and stepped portions 141 and 141 respectively, and the elongated bodies 13 and 14 are one step higher than the elongated bodies 11 and 12 .

Casters 15 are attached to the elongated bodies 13 and 14, respectively. The caster 15 is an example of a moving member. It is preferable that the casters 15 are provided with brakes (stoppers).
If the first frame 1 is likened to a rectangle, rod-shaped bodies 16 extending in the vertical direction are provided at the ends of the elongated bodies 11 and 12, that is, near their four tops.
A spring 17 is arranged on each bar 16 . Spring 17 is an example of an elastic body. The type of elastic body is not limited to springs.

The frame portion of the second frame 2 has the same shape as the first frame 1 . That is, the second frame 2 is formed by connecting the ends of elongated bodies 21 and 22 arranged at a predetermined interval by elongated bodies 23 and 24 . The elongated bodies 23 and 24 have stepped portions 231 and 231 and stepped portions 241 and 241, and the elongated bodies 23 and 24 are higher than the elongated bodies 21 and 22 by one step.

Concave portions 211 and 212 are formed in the elongated body 21 in the vicinity of portions dividing the longitudinal length of the elongated body 21 into three equal parts. Concave portions 221 and 222 are formed in the elongated body 22 in the vicinity of portions dividing the longitudinal length of the elongated body 22 into three equal parts. A roller 31 is arranged between the recesses 211 and 221 . A roller 32 is arranged between the recesses 212 , 222 . The roller 31 has a rotating shaft 331 and a rotating body 332 , and the rotating body 332 rotates around the rotating shaft 331 . The roller 32 also has a structure similar to that of the roller 31 .

Further, a foldable inclined plate 232 used when loading and unloading a tire, which will be described later, is attached to the long body 23 by hinges or the like. The length of the inclined plate 232 is arbitrary.
An opening 18 having a diameter slightly larger than the diameter of the rod-shaped body 16 is formed at a portion of each of the elongated bodies 21 and 22 corresponding to the rod-shaped body 16 .
By inserting each rod-shaped body 16 into each opening 18, the first frame 1 and the second frame 2 can be arranged to overlap each other.
FIG. 2 is a diagram for explaining the state when the second frame is placed over the first frame. FIG. 2(a) is a side view, and FIG. 2(b) is a front view.

The second frame 2 is biased upward in the plane of the drawing by each spring 17 . This spring 17 is structured to be inserted into the rod-like body 16 . Therefore, the spring 17 can be easily removed, and can be replaced with a spring 17 according to the tire weight. For example, when attaching or detaching a light tire, a weak biasing spring 17 can be used, and when attaching or detaching a heavy tire, a strong biasing spring 17 can be used.

By providing the stepped portions 131, 131 and the stepped portions 141, 141, a portion of the caster 15 is hidden by the stepped portions 131, 131 and the stepped portions 141, 141 in a side view. As a result, the height of the tire changing assist device 100 can be reduced and the device can be made compact compared to the case where the stepped portions 131, 131 and the stepped portions 141, 141 are not provided.
Next, an example of how to use the tire change assist device 100 will be described.
FIG. 3 is a diagram illustrating an example of how to use the tire change assist device. In addition, the following description is an example, and a part of procedures may be replaced.
<When tires are attached>

When using the tire changing assisting device 100 for tire mounting, the user places the tire changing assisting device 100 right next to the vehicle 50 and opens the inclined plate 232 to form a slope.
Next, the user expects a position where the upper portion of the second frame 2 and the lower portion of the tire at the mounting position are almost at the same height, and jacks up the vehicle 50 .

Then, the user rolls the tire 51 to be mounted and puts it on the rollers 31 and 32 from the ground using the inclined plate 232 . When the tire 51 is put on the rollers 31 and 32, the tire 51 has almost the same height as the mounting position. Even if the height of the tire placed on the roller 31 is slightly higher than the height of the mounting position, fine adjustment is possible by lightly pushing the tire 51 toward the ground. Further, even when the position of the clip bolt 52 on the car 50 side is deviated from the hole of the wheel (the insertion position of the clip bolt), the tire 51 rides on the rollers 31, 32, so that the tire can be rotated. Therefore, the positions can be easily adjusted. Once aligned, insert the hole in the wheel into the clip bolt 52 . The user then tightens the nut. The installation area between the curved surface of the rollers 31 and 32 and the tire 51 is smaller than the installation area between the flat surface and the tire 51 . Therefore, the force for inserting the wheel hole into the clip bolt 52 is reduced.
Since there is no need to lift the tire, the tire can be easily replaced by one person.
<When the tire is detached>

The user jacks up the car 50 when using the tire change assist device 100 when the tire is detached. It is preferable that the height of the jack-up is approximately the same as the height of the tire changing assist device 100 . That is, it is preferable that the upper portion of the second frame 2 and the lower portion of the tire 51 have substantially the same height.

Next, the tire changing assist device 100 with the inclined plate 232 opened to form an inclined surface is placed under the tire 51 . Since casters 15 are attached, it can be easily moved. Even if the height of the tire changing assist device 100 is slightly higher than the jack-up height, the tire changing assist device 100 can be arranged under the tire 51 by slightly contracting each spring 17 .

Next, the user removes the tire 51 together with the wheel from the vehicle. Since the rollers 31 and 32 are arranged under the tire 51 , the removed tire 51 is put on the rollers 31 and 32 .
Next, the tire change assist device 100 is pulled forward from the lower portion of the vehicle 50 by gripping the tire 51 . The weight of the tire 51 allows it to be easily pulled out.

Next, the tire 51 is pushed away from the rollers 31 and 32, and the inclined plate 232 is used to roll the tire 51 into place. In addition, although not shown, a mechanism for suppressing the rotation of the rollers 31 and 32 may be provided.

As described above, according to the tire changing assist device 100 of the embodiment, the rectangular first frame 1 including the casters 15 and the springs 17 provided near the top, and the tops of the first frame 1 A second frame body 2 which is arranged at a portion corresponding to the top of the body 1, has rollers 31 and 32 which are capable of rotating the tire in the rotational direction, and is biased by a spring 17 in the vicinity of each top, and a tire 51. and an inclined plate 232 which has a rolling surface and guides the tire from the ground contact surface to the rollers 31,32.
Since the tire 51 can be rolled and guided to the replacement position, even a weak person can easily replace the tire.
Since the tire can be rotated by rollers 31 and 32, it is easy to align the clip bolt with the wheel hole.
Also, the height of the tire can be adjusted within the contraction range of the spring 17 . Therefore, fine adjustment is also easy.

Also, the casters 15 allow the tire change assist device 100 to be freely moved in the front, rear, left, and right directions. Moreover, since the caster 15 has a brake, it can be fixed at a desired position.
Further, since the four springs 17 move independently, it is easy to finely adjust the positioning of the tires mounted on the rollers 31 and 32 with respect to the vehicle body.

Although the tire change assist device of the present invention has been described above based on the illustrated embodiments, the present invention is not limited to this, and the configuration of each part may be any configuration having similar functions. can be replaced with Also, other optional components and steps may be added to the present invention.
Moreover, the present invention may be a combination of any two or more configurations (features) of the above-described embodiments.

Reference Signs List 1 first frame 2 second frame 11, 12, 13, 14, 21, 22, 23, 24 long body 15 caster 16 rod-shaped body 17 spring 18 opening 50 car 51 tire 100 tire exchange auxiliary device 211 , 212, 221, 222 concave portion 231, 241 step portion 232 inclined portion 31, 32 roller 331 rotating shaft 332 rotating body

Claims (2)

a first rectangular frame comprising a moving member and an elastic body provided near the top;
Each of the top portions can be arranged at a portion corresponding to the top portion of the first frame, a roller capable of rotating the tire in a rotational direction is arranged, and the vicinity of each of the top portions is urged by the elastic body. a frame;
an inclined portion having a surface on which the tire rolls and guiding the tire from the ground contact surface to the roller;
A tire change auxiliary device, comprising: The first frame has a rod-shaped body extending in a vertical direction, the elastic body is arranged to surround the rod-shaped body, and holes through which the rod-shaped bodies are inserted are provided near the respective top portions of the second frame. 2. The tire changing assist device according to claim 1, further comprising:

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