JP3011299U - Electric wheels - Google Patents

Abstract

(57) [Abstract] [Purpose] When the current is interrupted, the attraction of the magnetic field between the stator and rotor is not hindered, and the wheels can be easily rotated by external force.
Providing electric wheels. [Structure] A rotor is pivotally provided in a rim of a wheel, a stator is pivotally provided on the wheel shaft, and electric power magnetic field induction is generated after power is supplied to one of the rotor or the stator, and a brake member is provided on the wheel shaft. When the current is interrupted, the brake member is in a released state, the magnetic force of the permanent magnet is applied to the stator and the rotor, and the rotor and the rotor can rotate together around the wheel shaft. When blocked, the stator and rotor induce electromagnetic force to generate relative rotation and drive the rim.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a type of electric wheel, and more particularly to an electric wheel that can rotate smoothly.

[0002]

[Prior art]

 Electric wheelchairs have already been designed to make wheelchair movements more convenient for people with leg disabilities. Currently, various electric wheelchair designs are in the development state.Methodically, a motor and a battery on the support frame of the wheelchair, and a switch for controlling the supply of the electric current of the battery to the motor are provided, and the output of the motor is set. It means that the wheels are driven by the shaft. In some electric wheelchairs, the output shaft of the electric motor is first transmitted to a wheel through a simple reduction mechanism. For the current traditional electric wheels, regardless of the power of the output shaft of the electric motor, the wheel shafts are driven directly or after first through a reduction mechanism and then indirectly. This made it difficult to propel an electric wheelchair when the battery electricity was exhausted.

The rotation of the output shaft of the electric motor is driven by the change in the induction electromagnetic force formed between the stator and the rotor in the electric motor. When the motor cannot get current, it does not rotate. At this time, it is very difficult to rotate the motor output shaft by an external force. This is because there is a permanent magnet attraction between the stator and rotor in the electric motor, which prevents relative rotation between the stator and rotor, and the wheelchair of the electric wheelchair is connected to the output shaft of the electric motor. This is because the wheel axle of an electric wheelchair does not easily rotate when the wheel does not rotate easily.

In addition, as well known in this type of conventional technology, there is a reduction mechanism generally provided with one input shaft and at least one output shaft, which outputs by an input shaft. It drives the shaft and is labor-saving. However, with this conventional technique, if the output shaft were to drive the input shaft, on the contrary, it would take a great deal of force and it would be difficult. As an example of a structure in which an electric wheelchair is transmitted to an electric motor using this technology, if the reduction mechanism is indirectly transmitted to the electric motor, the user may move the wheelchair once the electric motor stops rotating. If you try to thrust it, it will be very forceful. Such a situation usually occurs not only in an electric wheelchair but also in a product in which an axle is driven by an electric motor, for example, an electric bicycle, a motorcycle, an electric vehicle, or the like, or a product similar thereto.

[0005]

[Problems to be solved by the device]

 As can be seen from the above, it is a problem to be solved that the electric wheels can be rotated when the electric current is interrupted and when the electric motor is not rotated and the magnetic force of the permanent magnet in the stator or the rotor is not blocked. is there.

Therefore, the present invention provides a kind of electric wheel driven directly by induction electromagnetic force, and in particular, it can drive the wheel when the electric current is acquired, and in particular, the wheel can be driven even when the electric current is stopped. An object of the present invention is to provide a method capable of setting a rotatable state.

[0007]

[Means for Solving the Problems]

 According to the present invention, one stator and one rotor are provided in the wheel, and an induction electromagnetic force is generated after the current is supplied between them, and at the same time, the stator is fixed around the inside of the rim where the hollow wheel shaft rotates. The stator is connected to the wheel shaft by a bearing, and one brake member is provided on the wheel shaft. Further, one clutch switch is provided to control whether the brake member holds the first position or the second position, and when the brake switch is in the first position, the rotation of the stator coupled to the wheel shaft is prevented. Block. Further, when in the second position, it is in a relatively released state, and in this released state, the stator and the rotor can be simultaneously rotated.

[0008]

[Action]

 The electric wheel of the present invention smoothly rotates the wheel without being disturbed by the attraction of the magnetic field between the stator or the rotor when the rim is propelled and rotated by an external force when the electric motor is not rotating. Can be made.

[0009]

【Example】

 The present invention is a kind of electric wheel, and the direct driving method by the induction electromagnetic force is as follows: (a) The stator and the rotor are installed in the wheel; (C) The rotor is fixed to the inner circumference of the rim around which the hollow wheel shaft rotates, and the outer circumference of the rim generally supports the tire; (d) Bearing A brake member is installed on the wheel shaft; (e) a stator is provided on the bearing member; (f) one clutch switch is provided to operate and control the brake member, and the first position and the second position And reciprocating between the two and holding the brake member in one of these two positions; (g) braking the stator by the brake member when the brake member holds the first position; .

In the above method, the stator has a coil (4) when the installed rotor is made more permanent magnet. The opposite is true. 1 and 3 show two different embodiments. Bearings are provided on the wheel shafts on both sides of the rim. Alternatively, a sealing cap is provided to seal the outside of the bearing and provide dust protection. Also, during the technique used in the embodiment, a well-known technique is used, that is, a magnetic field is formed by a permanent magnet, an electric field is generated after passing a current through a coil, and then an electromagnetic field formed between them is formed. The technique of moving the rotor by force is used (in the present invention, the rotor is caused to perform a rotational movement). Since this technique is well known as described above, detailed description thereof will be omitted here.

In the embodiment of FIG. 1, electric current is supplied via an electric brush to a stator (2) connected to the wheel axle, which produces an inductive electromagnetic force with the rotor (3). However, this technique is well known. As shown in FIG. 3, the coil may be provided on the rotor in the rim (6). Further, an electric current sent by an electric wire through an electric brush is applied to the rotor (3), but this is also a well-known technique, and therefore detailed description thereof is omitted here.

According to the technical device of the present invention, the rotor (3) is fixed in the rim of the wheel, and the stator (2) is provided on the wheel axle in the wheel. In addition, either the stator or the rotor shall have a coil. The power supply (41) may supply a current to the coil (4) to generate an induction electric field, and may supply a current to the coil (4) by a method such as conducting directly through a bearing. Bearings are provided on the wheel axle (5) on both sides of the rim which rotates around the aforementioned hollow wheel axle (5).

A device in which a stator (2) and a wheel shaft (5) are combined is provided on a wheel shaft (5), and a bearing member used for mounting the stator (2) on the wheel shaft (5). (7) and a brake member (8) fixed on the wheel shaft (5). The brake member (8) is operated and controlled by one clutch switch (9) and holds the first position to brake the stator (2) or holds the second position to hold the stator (2). Release. The brake member (8) shown in the figure is one brake drum, but if it is changed to a disc brake or other parts having a brake function, it is possible to satisfy the need of the present invention. You can

A characteristic of the above-mentioned device is that the brake member (8) always holds the first position to brake the status (2), thereby obtaining an electric current and generating an induction electromagnetic force. At this time, the stator (2) is braked by the brake member (8) and does not rotate, but causes the rotor (3) to perform relative rotation, thereby rotating the rim around the wheel shaft (5). However, when the current is interrupted, the clutch switch (9) is operated and controlled to the second position shown by the phantom line in FIG. 1, and the brake member (8) is released as shown by the phantom line in FIG. Then, the brake piece (81) is disengaged from the inner wall (21) of the stator (2). As a result, the stator (2) and the rotor (3) are attracted to each other by the attractive force of the permanent magnet, and the stator (2) is supported by the bearing member (7) at the location at this time, and the rotor (3) It will be in a state to rotate with. As a result, the thrust of the rim (6) no longer receives resistance due to the attractive force of the permanent magnets, ie the rim (6) rotates smoothly on the wheel axle (5).

[0015]

[Effect of device]

 The electric wheel configured by the above-mentioned device can be applied to the wheel of an electric wheelchair, an electric bicycle, an electric vehicle, and other similar articles. The present invention can be mounted on the drive wheel in the direct wheel, and does not need to be driven by a separately attached electric motor as in the conventional method. Moreover, even when the current is interrupted, the wheels can be smoothly propelled, which improves the drawback that the conventional electric wheels were difficult to be propelled when the current was interrupted.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

FIG. 2 is a sectional view taken along line 2-2 of FIG.

FIG. 3 is a sectional view of another embodiment of the present invention.

[Explanation of symbols]

(2) Stator (3) Rotor (4) Coil
(5) Wheel shaft (6) Rim (7) Bearing member (8) Brake member (9) Clutch switch (21) Inner wall (41)
Power supply (81) Brake piece

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[Procedure amendment]

[Submission date] November 17, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 2

[Correction method] Change

[Correction content]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 3

[Correction method] Change

[Correction content]

Claims (3)

[Scope of utility model registration request] 1. An electric wheel including: a stator installed on a hollow wheel shaft in a wheel; and a rotor fixed in a rim of the wheel, wherein a coil is provided on one of the stator and the rotor. Further, the electric wheel includes a power supply for supplying an electric current to the coil to generate an electromagnetic force between the stator and the rotor, and a characteristic of the electric wheel is that the wheel shaft is fixed and is rotated. And the rim rotates on the wheel shaft by the electromagnetic force generated between the stator and the rotor, the stator and the wheel shaft are coupled, and the coupling device is fixed on the wheel shaft. A bearing member provided on the wheel shaft and the brake member is fixed on the wheel shaft by a brake member, and the first position is held by operating control of one clutch switch so that the stator is not braked and rotated. Or the second position Lifting to include, as to release the stator, electric wheels. 2. The direct driving method according to claim 2, wherein the stator is provided with a coil. 3. The direct drive method according to claim 2, wherein the rotor is provided with a coil.