JP2002029202A - Omnidirectional running wheel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To lengthen the life of a barrel-shaped roller by heightening the strength of the end part in the longitudinal direction of the barrel-shaped roller easily damageable. SOLUTION: A wheel structure 6 is formed by rotatably mounting plural barrel-shaped rollers 3 on the outer peripheral part of a rotating support 5 rotatably supported by a rotating shaft 4 in the direction orthogonal to the axis 4 of rotation of the rotating support 5. The plural wheel structures 6 are omnidirectional running wheels arranged in the axial direction of the rotating shaft 4 of the rotating support 5. The longitudinal end member 16 of the barrel- shaped roller 3 is formed by material having a higher rigidity than the longitudinal central member 17 of the barrel-shaped roller 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an omni-directional vehicle for mounting on a truck such as a catering car, a wheelchair or the like to travel in all directions on a plane, or for laying on the floor and moving luggage in all directions. More specifically, the present invention relates to a technique for increasing the strength of the end of the barrel-shaped roller, which is easily damaged, in the longitudinal direction, thereby extending the life of the barrel-shaped roller.

[0002]

2. Description of the Related Art Conventionally, in an omnidirectional traveling wheel Aa, as shown in Japanese Patent Publication No. 52-10269 shown in FIG. 10, the rotation direction of the rotary support 5a is orthogonal to the concentric circle of the rotary support 5a. A plurality of wheel-forming members 6a each having a plurality of barrel-shaped rollers 3a pivotally supported at equal intervals so as to rotate in the direction of rotation. or,
As shown in JP-A-62-91302 shown in FIG.
In the same configuration, the outer periphery of the barrel-shaped roller 3b of the omnidirectional traveling wheel Ab is formed of an elastic body 2a. Further, in another conventional example shown in FIG. 12 (a), the barrel-shaped roller 3c of the omnidirectional traveling wheel having the same configuration is substantially the same as the wheel outer circumference of the omnidirectional traveling wheel on the pipe-shaped core 1a. As shown in FIG. 2B, a barrel-shaped roller 3d having a configuration in which an elastic body 2b such as rubber having an equal radius is lined is used.
Is made of resin or aluminum.

[0003]

In the barrel-shaped rollers 3a to 3d of the omnidirectional wheels Aa and Ab, when there is a step h on a traveling road surface when used as a bogie, or a free table laid on the floor When the transport object has a projection, the step h on the road surface or the projection of the transport object collides with the barrel-shaped rollers 3a.

When a step h or a projection collides near the center of the barrel-shaped rollers 3a in the longitudinal direction, the stress caused by the collision is dispersed and the barrel-shaped rollers 3a are prevented from being damaged. The barrel-shaped rollers 3a ...
If the step h or the projection collides with the end in the length direction of
Damage may occur such that the ends are peeled off without dispersing the stress (see FIG. 13).

When the barrel-shaped rollers 3a of the omnidirectional wheels Aa advance obliquely with respect to the step h or the projection, the rotary support 5a may collide with the step h or the projection (see FIG. 1). 14 (b)).

The rotating support 5a supports the barrel-shaped rollers 3a and receives a load. When handling heavy objects, the rotating support 5a uses a material having high rigidity such as steel or an aluminum alloy. , Which will hurt the object.

On the other hand, if the object is made of a highly rigid material such as steel, the rotating support 5a may be damaged,
It may be deformed, impeding the rotation of the barrel-shaped rollers 3a and impairing the original function of traveling in all directions.

Therefore, the outer circumference of the rotary support 5a is made smaller than the outer circumference of the omnidirectional traveling wheel Aa connecting the outer edges of the barrel-shaped rollers 3a, and the difference between the outer circumference of the wheel Aa and the outer circumference of the rotary support 5a is reduced. By increasing the size, it is also conceivable to prevent the rotating support 5a from colliding with the object. However, in such a configuration, the end side surface of the barrel-shaped rollers 3a... Collides with an object such as the step h, and the ends of the barrel-shaped rollers 3a.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has been made in consideration of the above-described problems, and it is possible to increase the strength of the longitudinal end of a barrel roller which is easily damaged and extend the life of the barrel roller. It is an object of the present invention to provide a vehicle wheel.

[0010]

According to the first aspect of the present invention, a plurality of barrel-shaped rollers 3 are provided on the outer periphery of a rotary support 5 rotatably supported by a rotary shaft 4 with respect to the rotary shaft 4 of the rotary support 5. An omnidirectional traveling wheel having a plurality of wheel components 6 arranged side by side in the axial direction of the rotating shaft 4 of the rotary support 5 so as to form a wheel component 6 by being rotatably mounted in a direction perpendicular to the rotating component. The end member 16 in the longitudinal direction of the shape roller 3 is formed of a material having higher rigidity than the central member 17 in the longitudinal direction. According to such a configuration, the barrel-shaped roller 3
The end of the barrel-shaped roller 3 is not damaged even if it collides with a step or a projection by increasing the strength of the end of the barrel-shaped roller 3, the life of the barrel-shaped roller 3 can be extended, and the commercial value can be increased. .

According to a second aspect of the present invention, the end member 16 of the barrel roller 3 is configured to be detachable from the center member 3b. According to such a configuration, the end member 16 that is easily damaged can be removed and replaced, and the life of the barrel-shaped roller 3 can be further extended.

According to a third aspect of the present invention, a plurality of barrel-shaped rollers 3 are rotated on the outer peripheral portion of the rotary support 5 rotatably supported by the rotary shaft 4 in a direction perpendicular to the rotary shaft 4 of the rotary support 5. An omnidirectional traveling wheel in which a wheel structure 6 is freely attached to form a wheel structure 6 and a plurality of wheel structures 6 are juxtaposed in the axial direction of a rotating shaft 4 of a rotary support 5. 1 and an elastic body 2 covering the outer periphery of the core 1, and a reinforcing member 18 for increasing the strength of the core 1 is provided at an end of the core 1 in the roller length direction. . According to such a configuration, the strength of the end of the barrel-shaped roller 3 can be increased by the reinforcing member 18 attached to the end of the core material 1, and the end of the barrel-shaped roller 3 collides with a step or a projection. Even if the elastic member 2 is easily damaged, the core member 1 can receive the load together with the reinforcing member 18 without receiving the load, and the end of the barrel-shaped roller 3 is not damaged. Can be extended, and the commercial value can be increased.

In the present invention, a plurality of barrel-shaped rollers 3 are rotated on the outer peripheral portion of the rotary support 5 rotatably supported by the rotary shaft 4 in a direction perpendicular to the rotary shaft 4 of the rotary support 5. An omnidirectional traveling wheel in which a plurality of wheel components 6 are freely attached to form a wheel component 6, and a plurality of wheel components 6 are juxtaposed in the axial direction of the rotary shaft 4 of the rotary support 5, and an outer peripheral portion of the rotary support 5 An outer periphery hiding member 19 that covers a portion where the barrel-shaped roller 3 does not exist is detachably provided on the rotary support 5. According to such a configuration, by covering the portion of the rotary support 5 where the barrel-shaped roller 3 is not present with the outer periphery hiding member 19, it is possible to prevent the rotary support 5 from colliding with a step or the like. As a result, the durability of the rotary support 5 can be improved, and the outer periphery hiding member 19 can be replaced, so that the cost of the outer periphery hiding member 19 can be reduced.

According to a fifth aspect of the present invention, a plurality of barrel-shaped rollers 3 are rotated on the outer peripheral portion of the rotary support 5 rotatably supported by the rotary shaft 4 in a direction orthogonal to the rotary shaft 4 of the rotary support 5. An omnidirectional traveling wheel in which a plurality of wheel components 6 are freely attached to form a wheel component 6, and a plurality of wheel components 6 are juxtaposed in the axial direction of the rotary shaft 4 of the rotary support 5, and an outer peripheral portion of the rotary support 5 Is covered with an outer peripheral member 20 having a lower rigidity than the central portion. According to such a configuration, the impact when the outer peripheral portion of the rotary support 5 collides with a step or the like can be reduced, and the step and the barrel-shaped roller 3 can be prevented from being damaged.

According to a sixth aspect of the present invention, the outer periphery concealing member 19 has a two-layer structure of inner and outer layers, and the outer layer member 19a and the inner layer member 19b are formed.
Are characterized by different colors.
According to such a configuration, the outer layer material 1 of the outer periphery hiding member 19 is formed.
When 9a wears, the inner layer material 19b of a different color appears, and it is possible to know the replacement time of the outer periphery hiding member 19.

[0016]

Embodiments of the present invention will be described below. 1A is a schematic front view of an omnidirectional wheel, FIG. 1B is a schematic side view of an omnidirectional wheel, and FIG.
FIG. 3 is a sectional view of a barrel roller. FIG. 3A is a perspective view of a cart, and FIG. 3B is a bottom view of the cart.

The omnidirectional traveling wheel A of the present invention is, for example,
It is used as a wheel of the push cart 8 and travels freely on the floor in all directions, and can be used for a catering car, a wheelchair, and the like. The details will be described below.

An omnidirectional traveling wheel A is provided with a shaft 9 on the outer periphery of a rotating support 5 rotatably supported by a rotating shaft 4 so as to be substantially perpendicular to the rotating shaft 4. Are rotatably supported via bearings 10 to form a wheel component 6, and a plurality of such wheel components 6 are arranged side by side in the axial direction of the rotating shaft 4 of the rotary support 5. . In FIG. 1B, two sets of the wheel components 6 are arranged in parallel, but three or more rows may be arranged. Further, the rotary support members 5 of the plurality of wheel components 6 may be integrated.

The barrel-shaped roller 3 is formed by integrating a rigid material such as steel, aluminum alloy, magnesium alloy, or reinforced plastic, or has a high rigidity such as steel, aluminum alloy, magnesium alloy, or reinforced plastic. There is a double structure in which an elastic body 2 is attached around a core material 1 formed of a material (see FIG. 1C). The elastic body 2 is made of rubber such as urethane rubber, butadiene rubber, or natural rubber, and has good shock absorption, is easily available, and is inexpensive. As the shape of the core material 1, a pipe shape shown in FIG. 1C and a barrel shape shown in FIG. 2 can be considered. As described above, with the double structure of the core material 1 and the elastic body 2, it is difficult to damage the target surface while maintaining strength as a structure.

As described above, the periphery of the barrel-shaped core material 1 is
Omnidirectional traveling wheel A using barrel-shaped roller 3 covered with
In this case, as described in the section of the problem to be solved by the prior art and the invention, the end of the barrel-shaped roller 3 is easily damaged when going over the step, but in the present invention, It is intended to solve such a problem.
The details will be described below.

As shown in FIG. 4, the end member 16 in the longitudinal direction of the barrel-shaped roller 3 is formed of a material having higher rigidity than the central member 17 in the longitudinal direction. Specifically, the end member 16 of the elastic body 2 is made of reinforced plastic or high-strength urethane having higher rigidity than the central member 17 to prevent the end of the barrel-shaped roller 3 from being damaged.

Thus, the strength of the end of the barrel-shaped roller 3 is increased so that the end of the barrel-shaped roller 3 is not damaged even if it collides with a step or a projection, and the life of the barrel-shaped roller 3 is extended. Can increase the commercial value.

FIG. 5 shows another embodiment. However, the basic configuration of the present embodiment is the same as that of the above-described embodiment, and the common portions are denoted by the same reference numerals and description thereof is omitted.

In the present embodiment, the end member 16 in the longitudinal direction of the barrel-shaped roller 3 is formed of a material having higher rigidity than the central member 17 in the longitudinal direction, and the end member 16 is formed of the central member. 17 is detachable. Specifically, for example, a cylindrical end member 16 having the core material 1 as a convex portion is engaged with both ends of the barrel-shaped roller 3.
In addition, the detachable structure can be variously changed.

Thus, the end member 16 which is easily damaged can be removed and replaced, and the life of the barrel roller 3 can be further extended.

FIG. 6 shows still another embodiment, provided that
The basic configuration of this embodiment is the same as that of the above-described embodiment, and the common portions are denoted by the same reference numerals and description thereof will be omitted.

In the embodiment shown in FIG. 1A, the barrel-shaped roller 3 is composed of a core 1 and an elastic body 2 covering the outer periphery of the core 1, and the end of the core 1 in the roller length direction is provided at the end. The reinforcing member 18 for increasing the strength of the core 1 is additionally provided.

In the present embodiment, the strength of the end of the barrel-shaped roller 3 can be increased by the reinforcing member 18 attached to the end of the core material 1. Can be received by the core 1 together with the reinforcing member 18 without being subjected to the load by the elastic body 2 which is easily damaged even if it collides with the end, and the end of the barrel-shaped roller 3 is not damaged,
The service life of the barrel roller 3 can be extended, and the commercial value can be increased.

In the embodiment shown in FIG. 2B, the core member 1 is formed in a barrel shape, and a reinforcing member 18 is provided to increase the strength of the end portion of the barrel roller 3.

In the embodiment shown in FIG. 3C, an annular plate reinforcing member 18 is attached to both ends of the pipe-shaped core material 1 to increase the strength of the end of the barrel-shaped roller 3. It is.

The reinforcing member 18 in the embodiment of FIG. 6 may be integrated with the core material 1 or may be connected by screwing or the like.

FIG. 7 shows still another embodiment, provided that
The basic configuration of this embodiment is the same as that of the above-described embodiment, and the common portions are denoted by the same reference numerals and description thereof will be omitted.

In this embodiment, an outer periphery hiding member 19 for covering a portion of the outer periphery of the rotary support 5 where the barrel-shaped roller 3 does not exist is detachably provided on the rotary support 5. Specifically, an outer periphery hiding member 19 made of a synthetic resin such as MC nylon, 6-nylon or the like is detachably attached to the rotary support 5 with a screw 21.

By covering the portion of the rotary support 5 where the barrel roller 3 does not exist with the outer periphery hiding member 19, it is possible to prevent the rotary support 5 from colliding with a step or the like. Since the durability of the rotary support 5 can be improved and the outer periphery concealing member 19 can be replaced, even if one of the outer periphery concealing members 19 is worn out or damaged, the entire outer periphery concealing member 19 or Since it is not necessary to replace the entire wheel, the cost of the outer periphery hiding member 19 can be reduced.

FIG. 8 shows still another embodiment, provided that
The basic configuration of this embodiment is the same as that of the above-described embodiment, and the common portions are denoted by the same reference numerals and description thereof will be omitted.

In the present embodiment, the outer peripheral portion of the rotary support 5 is covered with an outer peripheral member 20 having lower rigidity than the central portion. Specifically, the outer peripheral portion of the metal rotary support 5 is covered with an outer peripheral member 20 made of an elastic material made of rubber or synthetic resin.

Thus, the impact when the outer peripheral portion of the rotary support 5 collides with a step or the like can be reduced, and the step and the barrel-shaped roller 3 can be prevented from being damaged.

Incidentally, the outer peripheral portion of the rotary support 5 is formed of a member different from the central portion, and the outer peripheral portion is formed of an elastic material having a lower rigidity than the central portion, for example, a coating of resin, rubber or the like. It may be formed.

FIG. 9 shows still another embodiment, provided that
The basic configuration of this embodiment is the same as that of the above-described embodiment, and the common portions are denoted by the same reference numerals and description thereof will be omitted.

In the present embodiment, the outer periphery hiding member 1
9 is formed into an inner and outer two-layer structure, and an outer layer material 19a and an inner layer material 1
9b is different in color. For example, inner layer material 1
9b is made of aluminum, the outer layer 19a is coated with a synthetic resin such as rubber, nylon, or the like. The inner layer 19b is made of white nylon, and the outer layer 19a is formed by integrally forming synthetic resin of different colors such as gray nylon. be able to.

Thus, the outer layer material 19 of the outer periphery hiding member 19
When a wears out, the inner layer material 19b of a different color appears, and it is possible to know the replacement time of the outer periphery hiding member 19.

Incidentally, it goes without saying that the omnidirectional traveling wheel A according to the present invention can be implemented on a free floor in which luggage is moved in all directions by laying on the floor.

[0043]

According to the first aspect of the present invention, a plurality of barrel-shaped rollers are rotatably mounted on the outer peripheral portion of the rotary support rotatably supported by the rotary shaft in a direction perpendicular to the rotary axis of the rotary support. An omnidirectional traveling wheel in which a plurality of wheel components are arranged side by side in the axial direction of the rotating shaft of the rotary support, wherein the end member in the length direction of the barrel roller is in the length direction. Because it is formed of a material that is more rigid than the central member of
By increasing the strength of the end of the barrel-shaped roller, the end of the barrel-shaped roller is not damaged even if it collides with a step or a projection, the life of the barrel-shaped roller can be extended, and the product value can be increased. There is an advantage that you can.

According to the second aspect, in addition to the configuration of the first aspect, the end member of the barrel-shaped roller is configured to be detachable from the center member. There is an advantage that the end member which is easy to remove can be removed and replaced, and the life of the barrel roller can be further extended.

According to a third aspect of the present invention, a plurality of barrel-shaped rollers are rotatably mounted on an outer peripheral portion of a rotary support rotatably supported by a rotary shaft in a direction orthogonal to the rotary axis of the rotary support. An omnidirectional traveling wheel in which a component is formed and a plurality of wheel components are juxtaposed in the axial direction of a rotating shaft of a rotary support, wherein the barrel-shaped roller is made of a core material and an elastic body covering the outer periphery of the core material. Since the reinforcing member is provided at the end of the core in the roller length direction in order to increase the strength of the core, the reinforcing member attached to the end of the core increases the strength of the end of the barrel-shaped roller. Even if the end of the barrel-shaped roller collides with a step or a projection, the elastic body is easily damaged and does not receive a load. The life of the barrel roller can be extended without any It can be advantageously enhanced.

According to a fourth aspect of the present invention, a plurality of barrel-shaped rollers are rotatably mounted on an outer peripheral portion of a rotary support rotatably supported by a rotary shaft in a direction orthogonal to the rotary axis of the rotary support. An omnidirectional traveling wheel in which a component is formed and a plurality of wheel components are juxtaposed in the axial direction of a rotating shaft of the rotary support, and covers a portion of the outer peripheral portion of the rotary support where there is no barrel-shaped roller. Since the outer periphery hiding member is detachably provided on the rotary support, covering the portion of the rotary support where the barrel roller is not present with the outer circumference hiding member prevents the rotary support from colliding with a step or the like. It is possible to improve the durability of the rotating support, improve the durability, and replace the outer peripheral concealing member. Therefore, there is an advantage that the cost of the outer peripheral concealing member can be reduced.

According to a fifth aspect of the present invention, a plurality of barrel-shaped rollers are rotatably mounted on an outer peripheral portion of a rotary support rotatably supported by a rotary shaft in a direction orthogonal to the rotary axis of the rotary support. An omnidirectional traveling wheel in which a component is formed and a plurality of wheel components are juxtaposed in the axial direction of the rotation axis of the rotary support, and the outer peripheral portion of the rotary support is an outer peripheral member having lower rigidity than the central portion. Since it is covered, the shock when the outer peripheral portion of the rotary support collides with a step or the like can be reduced, and there is an advantage that the step and the barrel-shaped roller can be prevented from being damaged.

According to the sixth aspect, in addition to the configuration of the fourth aspect, the outer periphery concealing member is formed into an inner and outer two-layer structure, and the colors of the outer layer material and the inner layer material are made different. In addition to the effect, when the outer layer material of the outer peripheral concealing member is worn, there is an advantage that an inner layer material of a different color appears and the replacement time of the outer peripheral concealing member can be known.

According to the seventh aspect, in addition to any one of the first to sixth aspects, the invention is applied to a hand cart.
In addition to the effects of any one of the first to sixth aspects, there is an advantage that a wheelbarrow that can be moved in all directions, has excellent durability, and is inexpensive can be obtained.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention, in which (a) is a schematic front view of an omnidirectional traveling wheel, (b) is a schematic side view, and (c).
FIG. 3 is a sectional view of a barrel roller.

FIG. 2 is a cross-sectional view of a barrel roller according to another embodiment of the present invention.

FIG. 3A is a perspective view of the hand cart of the above, and FIG. 3B is a schematic bottom view of the same.

FIG. 4 is an explanatory view of the barrel-shaped roller according to the first embodiment.

FIGS. 5A and 5B are explanatory diagrams of the above.

FIGS. 6A and 6B show another embodiment of the present invention, and FIGS.
(C) is a sectional view of the barrel roller.

7 shows still another embodiment of the above, wherein (a) is a schematic exploded front view and (b) is a schematic side view.

8 shows still another embodiment of the above, wherein (a) is a schematic front view and (b) is a schematic side view.

FIG. 9 is a cross-sectional view of an outer periphery hiding member showing still another embodiment of the above.

10A and 10B show a conventional example, in which FIG. 10A is a front view, and FIG. 10B is a side view.

FIG. 11 is a perspective view showing another conventional example.

FIG. 12 shows another conventional example, and (a) and (b) are schematic sectional views.

FIG. 13 is a sectional view of a conventional example.

14A is a top view of a conventional example, and FIG. 14B is a perspective view.

[Explanation of symbols]

 Reference Signs List 3 barrel-shaped roller 4 rotating shaft 5 rotating support 6 wheel structure 16 end member 17 center member

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Hideki Yamashita 1048 Kazuma Kadoma, Kadoma City, Osaka Prefecture F-term in Matsushita Electric Works, Ltd. (reference) 3J103 AA06 AA12 AA13 AA18 AA24 AA32 AA41 AA74 CA25 CA36 CA61 CA78 FA12 FA13 GA02 GA76 HA01 HA03 HA04 HA05 HA32 HA37 HA41 HA53

Claims (7)

[Claims] 1. A wheel structure is formed by rotatably mounting a plurality of barrel-shaped rollers on an outer peripheral portion of a rotary support rotatably supported by a rotary shaft in a direction orthogonal to a rotary axis of the rotary support. An omnidirectional traveling wheel in which a plurality of wheel components are juxtaposed in the axial direction of the rotation axis of the rotary support, wherein the end member in the length direction of the barrel-shaped roller is compared with the center member in the length direction. An omnidirectional wheel formed of a highly rigid material. 2. The omnidirectional traveling wheel according to claim 1, wherein an end member of the barrel-shaped roller is detachably attached to a center member. 3. A wheel structure is formed by rotatably mounting a plurality of barrel-shaped rollers on an outer peripheral portion of a rotary support rotatably supported by a rotary shaft in a direction orthogonal to the rotary axis of the rotary support. An omnidirectional traveling wheel in which a plurality of wheel components are juxtaposed in the axial direction of the rotating shaft of the rotating support, wherein the barrel-shaped roller is composed of a core material and an elastic body that covers the outer periphery of the core material. An omnidirectional traveling wheel, comprising a reinforcing member for increasing the strength of a core material at an end of the material in a roller length direction. 4. A wheel structure is formed by rotatably attaching a plurality of barrel-shaped rollers to an outer peripheral portion of a rotary support rotatably supported by a rotary shaft in a direction orthogonal to the rotary axis of the rotary support. An omnidirectional traveling wheel in which a plurality of wheel components are arranged side by side in the axial direction of the rotating shaft of the rotating support, and an outer periphery hiding member that covers a portion of the outer periphery of the rotating support where the barrel-shaped roller does not exist. An omnidirectional traveling wheel, which is detachably provided on a rotating support. 5. A wheel structure is formed by mounting a plurality of barrel-shaped rollers on an outer peripheral portion of a rotary support rotatably supported by a rotary shaft in a direction orthogonal to the rotary axis of the rotary support. An omnidirectional traveling wheel in which a plurality of wheel components are juxtaposed in the axial direction of the rotating shaft of the rotating support, wherein the outer peripheral portion of the rotating support is covered with an outer peripheral member having lower rigidity than the central portion. An omnidirectional traveling wheel, characterized in that: 6. The omnidirectional traveling wheel according to claim 4, wherein the outer periphery concealing member has a two-layer structure of inner and outer layers, and the outer layer material and the inner layer material have different colors. 7. The omnidirectional traveling wheel according to claim 1, which is applied to a hand cart.