KR20020048592A - A wheelchair motor brake hand-operated and electric-powerd - Google Patents

Abstract

PURPOSE: A manual/electric wheel chair motor brake is provided to reduce the whole size of a wheel chair while improving the efficiency thereof, and to improve the durability of the wheel chair. CONSTITUTION: In the manual/electric wheel chair comprised of driving wheels, a planetary reducer(100) mounted in the center of a rim, and a driving motor(200), a motor brake for the wheel chair consists of a thin magnetization coil(10) screwed to receive a projection of an output part housing(220) of the driving motor, and a lining(30) coupled to a rotating shaft(210) between an outer disk(20') and an inner disk(20) fastened to the one side surface of the magnetization coil.

Description

A wheelchair motor brake hand-operated and electric-powerd}

The present invention is a motor brake device for a wheelchair for stopping movement of a wheelchair used by a disabled person or a disabled person for movement, and in particular, the entire drive device can be easily mounted on a manual and electric combined wheelchair installed inside a driving wheel center. It was designed to be miniaturized and high efficiency.

In contrast to electric wheelchair drives that are not limited by mounting location or space, drives including motor brakes of manual and electric wheelchairs are mounted to the center of the drive wheels.

Motor brake devices of conventional manual and electric wheelchairs are not suitable for wheelchairs due to their large capacity due to the use of industrial motor brakes, and are difficult to be mounted on wheelchairs due to their large protrusion to the side and large specifications. It is difficult or inconvenient to use in narrow lengths or complex places due to many protruding parts, and it requires a lot of current for operation, so the battery is easily consumed, so continuous operation is impossible, durability decreases, and frequent charging There was discomfort.

The present invention has been invented to solve the above problems, the high efficiency of the motor brake so that the output portion of the drive unit consisting of a planetary reducer and a drive motor mounted to the center of the drive wheel of the wheelchair can be accommodated in the motor brake Manufactured in a thin fan (Pan) type, easy to install and small protrusions on both sides to provide a manual and electric wheelchair can be used without difficulty even in narrow and complicated roads.

1 and 2 are cross-sectional views showing the operating state of the drive device with a motor brake of the present invention.

Figure 3 is a cross-sectional view of the wheel chair with a motor brake of the present invention.

4 is a cross-sectional view of the planetary reducer and the drive motor.

5 is an operating state diagram of the motor brake at the time of power failure.

5 is an operating state of the motor brake at the time of energization.

<Description of the symbols for the main parts of the drawings>

10: magnetization coil 12: return spring

20: inner disk 20`: outer disk

30: brake lining 40: play control limit rod

100: planetary reducer 200: drive motor

210: rotating shaft 220: output housing

300: wheel 310: rim

400: manual handle

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, in describing each of the drawings, only the same components have the same reference numerals as possible even if shown on different drawings.

The motor brake of the manual and electric wheelchair of the present invention is a known manual and electric wheelchair having a drive device mounted to the center portion of the rim 310 of the wheelchair driving wheel 300 as shown in Figs. In the, the planetary gear reducer 100 and the drive motor 200, the wheelchair drive device rotating shaft 210 is energized to one end of the magnetized and the magnetization is terminated when the power is cut off when the magnetized coil 10 and the magnetized coil (10) In one side of the inner) the conductive inner disk 20, the brake lining 30 and the outer disk 20` are inserted and inserted in turn, and only the brake lining 30 is coupled to the rotary shaft 210 and rotated together It is a configuration.

The magnetizing coil 10 has a thin cylindrical shape and has a through hole formed at the center thereof so that the output housing 220 of the driving motor 200 can be accommodated. Is attached to prevent rotation of the inner disk 20, and a plurality of return springs 12 are inserted into the insertion hole to brake lining the inner disk 20 in a disconnection state in which there is no current flow in the magnetizing coil 10. 30) the wheelchair is to be braked by close contact, and a plurality of coupling screw holes are formed.

The inner disk 20 is formed of a thin disc and has a hole formed in the center thereof, so that the output part housing 220 of the driving motor 200 is fitted, and one surface of the inner disk 20 is in close contact with the ends of the plurality of return springs 12. The rotating recess is fitted into the plurality of recess grooves formed, and the brake lining 30 having a predetermined thickness is in close contact with the other surface thereof.

The outer disk 20 ′ is also a thin disk and has a hole in which a rotation shaft 210 of the driving motor 200 can be inserted into the center portion thereof, and the inner disk 20 in close contact with the brake lining 30. ) Is screwed to the magnetizing coil (10).

At this time, between the magnetizing coil 10 and the outer disk (20 ') by inserting the clearance adjustment limit bar 40 may be able to adjust the clearance to the lining wear limit according to the wear of the brake lining (30).

Reference numeral 400 is a manual handle for manually switching to drive or stop the wheelchair.

Referring to the use of the present invention made of the above configuration as follows.

As shown in FIG. 1, when power is applied to the driving motor 200, the magnetization coil 10 is magnetized by the current flowing through the interlocking magnetization coil 10.

The magnetic field generated by the magnetized magnetization coil 10 pulls the inner disk 20 in close contact with the brake lining 30 by the return spring 12 elastic force, thereby overcoming the elastic force of the return spring 12 as the magnetization coil is overcome. By attaching to (10), a gap is formed on both sides of the brake lining 30 interposed between the inner disk 20 and the outer disk 20 'and axially coupled to the rotating shaft 210 of the drive motor 200, thereby freely rotating. It is done.

When the wheelchair user wants to stop the movement, when the drive motor 200 is switched off, the magnetic field generated in the magnetization coil 10 is extinguished and loses the adsorption force, so that the inner disk 20 recovers the restoring force of the return spring 12. By being in close contact with the brake lining (30) by friction is to stop the wheelchair is to stop.

The motor brake device of the present invention as described above is formed in a thin shape so that it can be easily coupled to the center portion of the rim portion of the drive wheel, the output of the drive motor housing in the form of a fan (pan) having a cross-sectional shape of the combined motor brake By allowing it to be accommodated, the lateral protrusion is minimized so that even narrow alleys or complicated streets can be moved without inconvenience.

By miniaturizing the motor brakes of both manual and electric wheelchairs of the present invention, the manufacturing process is made easier and the output part housing of the driving motor is accommodated into the motor brake to minimize the protruding portion, thereby reducing the manufacturing cost of the relatively expensive electric wheelchair. It is to be able to spread.

Claims (2)

In a well-known manual and electric combined wheelchair having a drive device comprising a planetary reducer 100 mounted to a center portion of the rim 310 and a drive motor 200, the output housing of the drive motor 200 is provided. Rotating shaft between the inner disk 20 and the outer disk 20` having a combined conductivity coupled to one surface of the magnetized coil 10, screwed thin magnetized coil 10 while receiving the protrusion of the 220 ( Manual and electric wheelchair wheelchair brake, characterized in that consisting of a brake lining 30 coupled to the shaft (210). The method of claim 1, wherein the combined cross-sections of the magnetized coil 10, the inner disk 20, the brake lining 30, and the outer disk 20` which are combined and fastened are formed in a pan shape having a plate shape. Manual and motorized wheelchair motor brake.