JP2004017745A - Wheel for wheeled system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wheel for a vehicle which has an reduced assembly work and can be used enough even in a place where there is a need to maintain quietness and cleanness. <P>SOLUTION: A tire 2 is fixed at the outer peripheral part of a wheel element 1 and a toothed pulley is integrally formed coaxially with the wheel element 1 1 on at least one of the sides of the wheel element 1. Further, apparatus formed so that the tire 2 is fixed at the outer peripheral part of the wheel element 1 are situated in an opposed state, and the toothed pulley 3 is integrally molded coaxially with the wheel element 1. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a traveling device such as a robot, and more particularly to a wheel used in the traveling device (referred to as a wheel of the traveling device in this specification).
[0002]
[Prior art]
The traveling device generally transmits the rotational force of a motor to wheels via a sprocket and a chain, and can vary a traveling direction and a speed by changing a rotational speed and a rotational direction of an output shaft of the motor. It is.
[0003]
However, in the above traveling device, it is necessary to maintain quietness and cleanliness by generating a loud meshing noise between the sprocket and the chain and using grease to smoothly mesh the sprocket with the chain (for example, in a hospital). Etc.) had a problem that it was difficult to use.
[0004]
In addition, in the above-described traveling device, in assembling, in addition to the work of attaching wheels to the end of the axle, the work of attaching a sprocket to the axle is required, which is troublesome.
[0005]
2. Description of the Related Art In recent years, in the industry using the above-described traveling device, there is a long wait for a traveling device, particularly a wheel, which can be used sufficiently even in a place where it is necessary to maintain quietness and cleanliness, especially a wheel, in which the assembly work is small.
[0006]
[Problems to be solved by the invention]
In view of the above, an object of the present invention is to provide a wheel of a traveling device that requires less assembling work and can be sufficiently used even in a place where it is necessary to maintain quietness and cleanliness.
[0007]
[Means for Solving the Problems]
(Invention of claim 1)
In the wheel of the traveling device of the present invention, the tire 2 is fixed to the outer peripheral portion of the wheel main body 1, and a toothed pulley 3 coaxial with the wheel main body 1 is integrally formed on at least one of the side surfaces of the wheel main body 1. Is formed.
(Invention of claim 2)
The wheels of the traveling device according to the present invention have tires 2 fixed to the outer peripheral portion of a wheel main body 1 opposed to each other, and a toothed pulley 3 coaxial with the wheel main body 1 is provided between the wheel main bodies 1 and 1. It is integrally molded.
(Invention of claim 3)
According to the present invention, the wheel main body 1 comprises a boss 10 and an annular body 11 having a U-shaped cross section which is press-fitted to an outer peripheral portion of the boss 10. I have.
(Invention of Claim 4)
The present invention relates to the invention according to any one of the first to third aspects, wherein the toothed pulley 3 is formed by forming pulley teeth 31 on an outer peripheral surface of an extending portion 30 extending the boss portion 10 in the axial direction. .
(Invention of claim 5)
The present invention relates to the invention according to any one of the first to fourth aspects, and the toothed pulley 3 has belt guides 32 on both end surfaces thereof.
[0008]
The functions of the wheels of the traveling device will be clarified in the following embodiments of the invention.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described with reference to the drawings shown as examples.
[Embodiment 1]
FIG. 1 is a partial sectional view of a traveling device M using wheels S according to an embodiment of the present invention. FIG. 2 is a side view of the traveling device M and a sectional view of the wheels S.
(About the basic configuration of the traveling device M)
As shown in FIGS. 1 and 2, the traveling device M has a motor 9 attached to a rectangular frame 7 and a toothed pulley 91 attached to an output shaft 90 of the motor 9. A wheel S is mounted on a vehicle bearing plate 70 via a fixed shaft 5, and a toothed belt 8 is stretched between the toothed pulley 91 and the toothed pulley 3.
(About the configuration of the wheel S)
As shown in FIG. 3, the wheel S has a tire 2 fixed to an outer peripheral portion of the wheel main body 1, and a toothed pulley 3 is formed integrally on a side surface of the wheel main body 1 with a coaxial core with the wheel main body 1. .
[0010]
As shown in FIGS. 3 to 5, the wheel main body 1 includes a boss 10 and an annular body 11 having a U-shaped cross section press-fitted to an outer peripheral portion of the boss 10.
[0011]
As shown in FIG. 3, the boss 10 has a large-diameter hole for fitting the bearing 4 at an end face thereof.
[0012]
The annular body 11 is formed by pressing a metal plate such as a steel plate.
[0013]
As shown in FIGS. 1 and 3, the toothed pulley 3 is formed by molding pulley teeth 31 on the outer peripheral surface of an extended portion 30 in which the boss portion 10 extends in the axial direction. A belt guide 32 is provided in the region. As shown in FIGS. 3 and 4, a large-diameter hole for fitting the bearing 4 is formed in the end surface of the toothed pulley 3.
[0014]
The tire 2 can be made of rubber, synthetic resin, elastomer or the like as a material thereof, but needs to have abrasion resistance. For example, a urethane elastomer can be employed.
[0015]
The above-mentioned bearing 4 is a ball bearing, and a fixed shaft 5 serving as an axle is fitted into a hole of an inner race of the bearing 4 in the assembled state in FIG.
(Excellent points of traveling device M using this wheel S)
▲ 1 ▼. Since the traveling device M transmits the rotational force of the motor 9 to the wheels S by meshing the toothed gears, 3, 91 and the toothed belt 8, the traveling device M is compared with the prior art described in the section of the prior art. Therefore, the meshing sound is small and no grease or the like is used.
▲ 2 ▼. As shown in FIG. 3, only the wheels S are mounted on the fixed shaft 5 serving as the axle, and the toothed pulleys are simultaneously mounted. Therefore, the operation is simplified as compared with the prior art described in the section of the prior art. You.
[Embodiment 2]
In the wheel S of the second embodiment, as shown in FIG. 6, pulley teeth 31 are formed on the outer peripheral surfaces of the extending portions 30, 30 in which the boss portion 10 extends in the axial direction, and both side surfaces of the wheel body 1 are formed. Has toothed pulleys 3,3.
[0016]
The wheel S of the second embodiment also has the same excellent points as the first embodiment.
[Embodiment 3]
As shown in FIG. 7, the wheel S according to the third embodiment has a tire 2 fixed to the outer peripheral portion of the wheel main body 1 opposed to the wheel main body 1, and is coaxial with the wheel main body 1 between the wheel main bodies 1 and 1. The toothed pulley 3 is integrally formed with the core.
[0017]
The wheel according to the third embodiment also has the same excellent points as the first embodiment, and can withstand a heavy load since the overall wheel width is wide.
[Other embodiments]
The toothed pulley 3 of the above embodiment has a belt guide having 32, but the present invention is not limited to this, and the pulley 3 may have no belt guide.
[0018]
【The invention's effect】
The present invention has the following effects because it has the above configuration.
[0019]
As is clear from the description of the embodiment of the present invention, it is possible to provide the wheels of the traveling device that can be used sufficiently even in a place where it is necessary to maintain quietness and cleanness with less assembling work.
[Brief description of the drawings]
FIG. 1 is a partial sectional view of a traveling device using wheels according to a first embodiment of the present invention.
FIG. 2 is a side sectional view of the traveling device.
FIG. 3 is a sectional view of wheels used in the traveling device.
FIG. 4 is an external perspective view of the wheel as viewed from the toothed pulley side.
FIG. 5 is an external perspective view of the wheel as viewed from the opposite side of the toothed pulley.
FIG. 6 is a sectional view of a wheel according to a second embodiment of the present invention.
FIG. 7 is a sectional view of a wheel according to a third embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Wheel main body 2 Tire 3 Pulley 4 Bearing 5 Fixed shaft 10 Boss part 11 Annular body 30 Extension part 31 Pulley teeth 32 Belt guide

Claims (5)

The tire 2 is fixed to an outer peripheral portion of the wheel main body 1, and a toothed pulley 3 is formed integrally with at least one of the side surfaces of the wheel main body 1 so as to be coaxial with the wheel main body 1. Traveling device wheels. A tire 2 is fixedly mounted on an outer peripheral portion of a wheel body 1 so as to face the wheel body 1, and a toothed pulley 3 is integrally formed between the wheel bodies 1 and 1 so as to be coaxial with the wheel body 1. Traveling device wheels. The wheel according to claim 1 or 2, wherein the wheel body (1) presses the boss (10) and an outer peripheral portion of the boss (10). The traveling device according to any one of claims 1 to 3, wherein the toothed pulley (3) is formed by forming pulley teeth (31) on an outer peripheral surface of an extended portion (30) extending the boss (10) in the axial direction. Wheel. The wheel according to any one of claims 1 to 4, wherein the toothed pulley (3) includes belt guides (32) on both end surfaces.

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