KR200149141Y1 - Hemisphere type brushless dc motor - Google Patents

Abstract

The present invention relates to a brushless DC motor, and in particular, the rotor and the stator are manufactured in a hemispherical shape to form a motor configuration of the train, and the two motor components are arranged to face each other, thereby minimizing the product while improving output. The present invention relates to a hemispherical brushless DC motor having two axes capable of obtaining two different rotational forces.

The hemispherical brushless DC motor according to the present invention can make the device small and thin by installing the rotor and the stator in a hemispherical shape. In particular, since it is composed of a structure for generating two driving forces can be applied to products that require a large number of power.

Description

Hemispherical Brushless DC Motor

1 is a structural diagram of a hemispherical brushless DC motor according to the present invention.

* Explanation of symbols for main parts of the drawings

10: first structural unit 20: second structural unit

30,60: 1st, 2nd stator 31,61: coil body

32,62: input line 40,70: first and second rotor

41,71: magnetic pole piece 42,72: first and second drive shafts

50,80: first and second support 51,81: through

52,82: bearing 90a, 90b: bolt

100: plate 101: supporter

102: Bearing

The present invention relates to a brushless DC motor, and in particular, the rotor (rotor) and the stator (stator) are manufactured in a hemispherical shape to form a motor unit, and the two motor units The present invention relates to a hemispherical brushless DC motor having two axes that can be reduced in size while improving output while miniaturizing the product by arranging them facing each other.

Conventional brushless DC motor has a structure in which a rotor is made of a cylindrical body and a cylindrical stator having a larger diameter is fixed to its outer circumference to rotate the rotor by mutual extraction force. It was. At this time, the output is output to one shaft, and in order to support the output shaft, a case surrounding the stator is installed, and a bearing is inserted into the through part of the case to support the output shafts. Therefore, the size of the motor is large, on the contrary, there is a problem in that the extraction force is small.

Therefore, the object of the present invention is to devise to overcome the above-mentioned problems, the rotor and the stator is formed into a hemispherical shape to form a single body having an output, and by installing the two components facing each other in one, the product is made thin It is to provide a hemispherical brushless DC motor that can implement and increase efficiency.

Such a purpose is that, in a brushless DC motor, a first stator having a magnetic pole piece on an outer circumference thereof, a first stator having a coil body to form an inductor power spaced apart from the magnetic pole piece of the first rotor by a predetermined distance, and A first structural unit having a hemispherical shape having a first drive shaft which is held by the supporting means and is press-fitted to the first rotor and rotates; and a magnetic pole piece is provided at the outer circumference thereof, and is separated from the coil body by a predetermined distance to obtain a pulling force. A second stator having a rotating second rotor, a second stator having a coil body mounted on an inner circumferential surface spaced apart from the pole piece, and a second driving shaft rotatably held by the supporting means and fixed to the second rotor and rotated therein. A hemispherical brushless DC comprising a second component unit opposed to one first component unit and support means for rotatably supporting the first and second drive shafts on the first and second stators, respectively. It is achieved by the emitter.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a structural diagram of a hemispherical brushless DC motor according to the present invention. As shown in the drawing, the apparatus is constructed by assembling the first and second structural units 10 and 20 having independent driving characteristics to each other and partitioning therebetween. First, the first structural unit 10 will be described in detail.

The first structural unit 10 includes a first stator 30. A hemispherical inner cavity is formed in the first stator 30, and a hemispherical coil body 31 is fixed to the hemispherical inner circumferential surface. The first rotor 40 is formed in the internal cavity spaced apart from the coil body 31 by a small distance, and the first rotor 40 is also manufactured in a hemispherical shape so as to be rotatably supported by the first stator 30. have. The first rotor 40 has a hemispherical pole piece 41 on the outer circumferential surface of the first stator 30 that faces the coil body 31. Of course, in order to support the first rotor 40 in a rotatable manner in the first stator 30, a first support piece 50, which is a support means, is attached to an upper end portion of the first drive shaft 42 that is discharged to the outside. The first drive shaft 42 is withdrawn and supported by the through hole 51 formed on the center of the first support piece 50. In particular, a bearing 52 is inserted between the first drive shaft 42 and the through hole 51 to smoothly induce rotation. The first drive unit 10 is connected to the coil body 31 of the first stator 30, the input line 32 is connected so that the first rotor 40 is controlled externally to have a predetermined number of revolutions and maneuvering force. do. The first structural unit has been described above. Now, the second configuration unit 20 will be described.

The second structural unit 20 also has the same structure as the first structural unit 10 shown above. That is, the second rotor 70 having the same hemispherical shape is located inside the second stator 60 having the hemispherical internal cavity. Of course, the magnetic pole pieces 71 are mounted on the outer circumferential surface of the second rotor 70, and the coil body 61 is mounted on the inner circumferential surface of the second stator 60 spaced apart from the predetermined interval. The second drive shaft 72 is press-fitted to the shaft center of the above-described second rotor 70, and the second stator 60 is rotatably supported by the second stator 60 to support the second drive shaft 72. The second support piece 80 is mounted on the outer circumferential portion thereof. A through hole 81 is formed at the center of the second support piece 80 so that the second driving shaft 72 press-fitted to the second rotor 70 passes through the outside and exits. At this time, the bearing 82 is inserted between the through hole 81 of the second support piece 80 and the outer circumferential portion of the second drive shaft 72 facing the same in order to reduce friction at the support part and maintain smooth rotation. . In addition, an input line 62 is also connected to the second stator 60 so as to adjust its driving characteristics from the outside. In other words, the second structural unit 20 is driven in accordance with the driving pulse that enters the input line 62.

The first structural unit 10 and the second structural unit 20 described above are opposed to each other by the two structural units 10 and 20 in a semicircular shape in which the adhesive surface is symmetrical and fixed by bolts 90a and 90b as fixing members. It is integrated by doing. Of course, when the first component unit 10 and the second component unit 20 are brought into contact with each other, the internal cavity of the first component unit 10 and the internal cavity of the second component unit 20 are combined to form one cavity. Inside each rotor is installed, it is necessary to partition the two cavities. Therefore, the diaphragm 100 is provided in the contact part of the two 1st, 2nd structural units 10 and 20. As shown in FIG. The two constituent units 10 and 20 are assembled by bolts 90a and 90 in a state in which two cavities are partitioned by the diaphragm 100. In particular, the support hole 101 is formed in the center of the diaphragm 100 to rotatably support the inner ends of the first driving shaft 32 and the second driving shaft 72. Of course, bearings 102 are also inserted here to reduce friction during rotation. On the other hand, all the above-mentioned bearings 52, 82, 102 are inserted into the first and second support pieces 50, 80 holding the first and second drive shafts 42, 72 and the diaphragm 100. In this way, the bearings 52, 82, and 102 are inserted so that the first and second support pieces 50, 80 and the diaphragm 100 which hold the drive shafts 42, 72 for rotation are referred to as support means.

Now, the operation of the present invention will be described in detail.

When a driving pulse is applied to the first structural unit 10 through the input line 32, the coil unit 31 mounted on the inner circumferential surface of the first stator 30 and the outer circumferential surface of the first rotor 40 are mounted. The first rotor 30 is extracted by the magnetic pole pieces 41 forming mutual induction electromotive force. When the first rotor 40 rotates in this way, the first drive shaft 42 press-fitted to the shaft center rotates and is output to the outside.

Of course, the second driving unit 72 also rotates on the second construction unit 20 in the same principle as the first construction unit 10. In particular, the characteristics of the motor include the first construction unit 10 and the second construction unit. (20) is combined to form a motor, and it can be said that each driving pulse is applied to the first component unit 10 and the second component unit 20 so as to operate independently.

As described above, the hemispherical brushless DC motor according to the present invention can make the device small and thin by installing the rotor and the stator in a hemispherical shape. In particular, since it consists of a structure that generates two driving forces it can be mounted even in a narrow space in products that require a large number of power.

Claims (5)

A brushless DC motor comprising: a first stator having a magnetic pole piece at an outer circumference thereof, a first stator having a coil body for forming an induced electromotive force spaced apart from the magnetic pole piece of the first rotor by a predetermined distance, and by means of supporting means A hemispherical first structural unit having a first drive shaft retained and press-fitted to the first rotor to rotate; A second stator provided with a magnetic pole piece on the outer circumference and having a second rotor rotating at a predetermined interval apart from the coil body to obtain a pulling force, and a coil body mounted on an inner circumferential surface spaced from the magnetic pole piece, and rotating on the support means. A second component unit opposed to a first component unit having a second drive shaft which is secured to be rotatably pressed and rotated by the second rotor; And support means for rotatably supporting the first and second drive shafts on the first and second stators, respectively. 2. The support of claim 1, wherein the support means has a first support piece fixed to the first stator and having a through hole and holding the first rotation shaft, and a through hole fixed to the second stator and inserting the second rotation shaft. Hemispherical brush, characterized in that consisting of a second support piece and a diaphragm having a support hole is inserted into the border portion of the first, the second structural unit and the inner end of the first, second rotation shaft is inserted and supported rotatably Reese DC Motor. The hemispherical brushless DC motor of claim 2, wherein the diaphragm divides the internal space formed by the first and second structural units into two. The method of claim 2, wherein the through holes of the first and second support pieces, which are the support means, and the support holes of the diaphragm, are provided with a plurality of bearings for reducing friction during rotation of the first and second rotary shafts. Hemispherical brushless DC motor. The hemispherical brushless DC motor of claim 1, wherein each of the first and second driving units includes an input line and is independently driven by a driving pulse.