Double power brushless motor

Abstract

Conventionally, the electromagnetic coil of a brushless motor has been fixed to a curved surface, which means that only one electromagnetic force is used for rotation. This motor aims to improve this situation by using both electromagnetic forces for rotation. [Solution] The electromagnetic coil (11) is not fixed to a curved surface, but is sandwiched and held between two flat surfaces. A holder is made from two holding disks (1) with electromagnetic coil insertion and installation openings (12) on the flat surfaces, and an intermediate tube (3), and the electromagnetic coil (11) is inserted and held, utilizing the electromagnetic forces of both, rotor permanent magnet structures (38) are provided on both sides of the holder, and one stator structure (39) rotates two rotor structures (38) that are installed with opposite polarities facing each other.

Description

[Technical Field]

[0001] The present invention relates to a method for rotating two sets of rotor configurations arranged separately with one set of stator configuration. [Background technology]

[0002] Conventionally, one side of the stator of a brushless motor is fixed, and only one side of the stator is used for rotation by electromagnetic force. Summary of the Invention [Problem to be solved by the invention]

[0003] This had the following drawbacks: The stator and rotor were installed on curved surfaces, and the stator had to be fixed to the curved surface, so only one electromagnetic force could be used. The present invention has been made to eliminate such drawbacks and to utilize both electromagnetic forces for rotation. [Means for solving the problem]

[0004] In a brushless motor, the rotor is configured with multiple permanent magnets (9), each of which has a pair of north and south poles on the magnetic pole side of an electromagnet coil (11), with the total number being a multiple of two. The stator is configured with electromagnet coils (11), with the total number being a multiple of the number of phases, and the ratio of the total number of permanent magnets (9) to the number of phases of the electromagnet coils (11) is not an integer. This is the state when one side of the electromagnet coil (11) is fixed to a curved surface. If the electromagnet coil (11) is not fixed, both electromagnetic forces can be used for rotation. This is possible by installing permanent magnets (9) on both poles of the electromagnet coil (11) with opposite polarities facing each other, as shown in Figure 6. When current is applied to the electromagnet coil with this permanent magnet configuration, attraction and repulsion occur simultaneously in the same direction on the electromagnet coil iron core (Figure 9), even if the electromagnetic polarities change, so the electromagnet coil (11) does not move. This phenomenon can be utilized. Even if the permanent magnet (9) can be mounted on the rotating disk (Figure 4), the electromagnetic coil (11) will be left floating. Therefore, a holder is required to sandwich and hold the electromagnetic coil (11) between two flat plates. This holder can be fabricated, and for rotational movement, the holding plates can be provided with openings for the salient poles of the coil iron core to hold it firmly. If the electromagnetic coil (11) can be held, it becomes possible to rotate two rotor configurations with one stator configuration, resulting in twice the output. However, there are challenges. In a typical brushless motor, one side of the electromagnetic coil is fixed, and the polarity of the permanent magnet on one side is detected and power is applied from the drive circuit. However, when permanent magnets are mounted on both sides of the electromagnetic coil, is it possible to create a drive circuit that can detect the polarity of the permanent magnet on only one side and power is applied? This section explains this as possible. The present invention is a double power brushless motor having the above configuration.

[0005] The invention described in claim 1 is a double power brushless motor, wherein the stator of this motor is held by clamping with a holder, and a rotor is provided on each magnetic pole side of the stator, respectively, and is configured to rotate, the rotor is composed of a plurality of permanent magnets, the electromagnetic pole faces of the stator's electromagnetic coils are composed of north and south poles, the total number of permanent magnets is a multiple of two, the stator is composed of the electromagnetic coils, and the total number of electromagnetic coils is a multiple of the number of phases, and the ratio of the total number of the plurality of permanent magnets to the number of phases is not an integer, and the permanent magnet configuration of the rotor and the electromagnet configuration of the stator are configured as two magnet configurations necessary for rotation, and one set of the electromagnetic coil configuration rotates two sets of the permanent magnet configurations.

[0006] The invention described in claim 2 is a double power brushless motor described in claim 1, in which the holder is two holding disks with a U-shaped cross section, one flat, and the other with a ring with multiple fixing bolt holes around the periphery, an opening in the center through which the flange of the rotating shaft passes, and the required number of openings into which the electromagnetic coil structure of the stator is fitted, and the two holding disks are united to form the holder by placing the flat portions facing each other and via an intermediate tube with the multiple fixing bolt holes and wiring outlet holes.

[0007] The invention described in claim 3 is a double power brushless motor described in claim 1, wherein the permanent magnet configuration of the rotor includes two disks with a diameter smaller than the inner diameter of the two retaining disk rings and two magnetic circuit steel plates of the permanent magnet configuration with the same diameter, which are paired and fastened together to the flange of the rotating shaft, the permanent magnet installation disks of the rotor are provided with the required number of openings for inserting the permanent magnets, through openings for the rotating shaft, fastening holes for the flange, and positioning pin holes, the magnetic circuit steel plates that are fastened together are provided with the fastening holes and positioning pin holes, and the permanent magnets are installed with opposite poles facing each other on the two permanent magnet installation disks when installed.

[0008] The invention described in claim 4 is a double power brushless motor described in claim 1, in which the rotating shaft has two flanges, each of which has a threaded bolt hole for co-tightening and a positioning pin hole that does not pass through, and has two stepped processing locations for fitting and preventing fixed bearings.

[0009] The invention described in claim 5 is a double power brushless motor described in claim 1, configured such that the multiple electromagnetic coils for each phase have their wiring wound in the same direction, and both ends of the wiring are star-connected, one on the magnetic pole detection side and the other on the power transmission side, the neutral points on the magnetic pole sides are each wired in parallel to a single wire, and the neutral points on the power transmission side are each wired in series with a transistor output line of a drive circuit corresponding to the direction of rotation. [Effects of the Invention]

[0010] By sandwiching and holding the stator's electromagnetic coil between flat plates rather than fixing it to a curved surface, the electromagnetic forces generated at both ends of the coil can both be used to rotate the rotor.

[0011] Using this method, by providing a rotor configuration on each side of one stator configuration, it is possible to rotate two rotor configurations with the same power consumption, making it possible to create a motor that is energy-efficient and has high output.When used as a generator, it can generate twice the amount of electricity. [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 1 is a perspective view of a motor according to the present invention. [Figure 2] 1 is a cross-sectional view of a motor according to the present invention. [Figure 3] FIG. 2 is a plan view of the motor intermediate tube of the present invention. [Figure 4] FIG. 2 is a plan view of a permanent magnet mounting disk of the motor of the present invention. [Figure 5] FIG. 2 is a plan view of the motor electromagnet fitting and installation disk ring side of the present invention. [Figure 6] FIG. 2 is a diagram showing the arrangement of magnets in a motor according to the present invention. [Figure 7] FIG. 4 is an enlarged detailed cross-sectional view of a motor disc co-fastening portion of the present invention. [Figure 8] FIG. 2 is a view of a motor rotating shaft flange according to the present invention. [Figure 9] 1 is a diagram of a laminated steel core of a motor according to the present invention; [Figure 10] 1 is a sawtooth structure of a laminated steel sheet coil wound in a motor according to the present invention; [Figure 11] FIG. 10 is a diagram of the protrusion for preventing the permanent magnet from peeling off of the motor of the present invention. [Figure 12] 10 is a diagram of a motor locating pin of the present invention. [Figure 13] 1 is a view showing a waterproof plug rubber for a motor intermediate tube wiring lead-out hole of the present invention. [Figure 14] FIG. 2 is a plan view of the waterproof O-ring installation groove of the motor intermediate tube of the present invention. [Figure 15] FIG. 2 is a diagram of a waterproof O-ring for a motor intermediate tube according to the present invention. [Figure 16] FIG. 2 is a plan view of a magnetic circuit steel plate for a permanent magnet of a motor according to the present invention. [Figure 17] FIG. 2 is an enlarged cross-sectional view showing a countermeasure against peeling of a permanent magnet in a motor according to the present invention. [Figure 18] FIG. 2 is a cross-sectional view of the motor back plate of the present invention. [Figure 19] FIG. 2 is a cross-sectional view of the motor back plate of the present invention, from which the output shaft is taken out. [Figure 20] FIG. 2 is a plan view of the motor back plate of the present invention. [Figure 21] FIG. 1 is a side view of the motor back plate output shaft extraction rubber seal of the present invention. [Figure 22] FIG. 1 is a diagram showing the installation of two sets of permanent magnets in a motor according to the present invention. [Figure 23] FIG. 2 is a motor electrical wiring diagram of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0013] Hereinafter, an embodiment of the present invention will be described. The rotor is configured with multiple permanent magnets (9), each of which has an electromagnetic coil (11) with a pair of north and south poles on the magnetic pole side, with the total number being a multiple of two. The stator is configured with electromagnetic coils (11), with the total number being a multiple of the number of phases, and the ratio of the total number of permanent magnets to the number of phases is not an integer. The stator's electromagnetic coil configuration (39) does not necessarily have one coil (11) per phase, so as an example, we will explain it using 12 poles, three phases, and nine coils. The holding plate of the holder is made of aluminum alloy and is U-shaped in cross section. It consists of two circular plates (1) with a ring on one side and four lugs and semi-cylindrical bottle holes for combining, and an intermediate tube (Figure 4) used to maintain the gap when the electromagnetic coil (11) is clamped and held.

[0014] The intermediate tube (Fig. 4) has a wiring outlet (7) and ring grooves (28) at both ends for waterproofing, and O-rings (28) are installed. An opening (16) is provided in the center of the holding disk (1) for the flange (Fig. 8) of the rotating shaft (2) to pass through, and the opening (12) for the electromagnetic coil laminated core (21) is opened using laser processing. Nine openings are made evenly around the circumference, with gaps provided to prevent interference with other openings (Fig. 5). The openings are chamfered to make them easier to insert. The holding fixture is constructed by joining two holding disks (1) and the intermediate tube (3) together with bolts. The electromagnetic coil core (21) to be inserted and held is made from laminated steel plate (Fig. 9). The top and bottom sections of the laminated steel plate (Fig. 9) are bent at right angles at the dotted lines in (Fig. 10). Since this is not fixed, it acts as a stopper at the beginning and end of the coil winding and prevents it from slipping in. The sides of all the steel plates (21) have sawtooth (22) grooves so that when the coil is wound, the steel plate will not come loose and will be tightly fastened. The dimensions are such that the surface of the iron core will be flush when inserted. The permanent magnet mounting disc (Fig. 4) is made of two aluminum alloy discs that are slightly smaller than the inner diameter of the ring (16) of the holding disc. The discs have a rotating shaft opening (17) in the center and a permanent magnet mounting opening (17), and 12 permanent magnet mounting openings (14) are opened by laser machining in the same positions as the electromagnet coil openings (12), with gaps spaced evenly around the circumference so as not to interfere with other openings (Fig. 4).

[0015] Additionally, to prevent the permanent magnet (9) from peeling off, the permanent magnet mounting disk (10) has a stepped protrusion (24) on one side of the permanent magnet to prevent it from falling out. The aluminum alloy disk has a cutout to accommodate this protrusion. The dimensions are determined taking into account the thickness of the permanent magnet (9). When inserted, the two disks should face each other and have opposite polarities. The aluminum alloy disk (10) has a screw hole and a positioning pin hole (6) that are co-fastened with the rotating shaft (2). This permanent magnet mounting disk (10) is secured to the rotating shaft flange (18) by co-fastening with the electromagnetic steel plate (8) of the magnetic circuit. The shape of the electromagnetic steel plate is the same except for the lack of a magnet mounting opening. The rotating shaft (2) has two flanges (19), and the flanges (Figure 8) have four bolt holes (13) and two positioning pin holes (6). The pin holes do not penetrate (Figure 7). The external dimensions between the flanges are the external dimensions of the electromagnetic coil iron core (21) and the dimensions of the two air gaps (40). The rotating shaft (2) is equipped with a stepped fixed bearing (37) and is held in place by the back plate (30). As nine coils are used for electrical wiring (Fig. 23), one phase has three electromagnetic coils (11), requiring three sets of wiring, with the wiring requiring the same current wired in parallel and the transistor output wire (34) of the drive circuit (35) requiring the same current wired in series. [Explanation of symbols]

[0016] 1. U-shaped cross section, fixing bolt holes, retaining disc with ring 2 rotation axes 3 Intermediate tube 4 Combined fixing bolt holes 5 Flange fixing bolt holes 6 Locating pin holes 7 Wiring hole 8. Permanent magnet magnetic circuit steel plate 9. Permanent magnets 10. Permanent magnet mounting disc 11 Electromagnet coil 12 Electromagnet insertion opening 13 Neutral point 14 Permanent magnet insertion opening 15 Rotating shaft through hole 16 Ring 17 Rotating shaft flange opening 18 Fixed bearing 19 Rotating shaft flange 20 Right-angle bent laminated steel plate 21 Electromagnet coil laminated core 22 serrated grooves 23 Dotted lines at right-angle bending positions of upper and lower laminated steel plates 24 Protrusion on the back of the permanent magnet 25 Permanent magnet back surface shape 26 Locating pin 27 Intermediate tube wiring pull-out hole waterproof plug 28 Waterproof ring groove 29 Waterproof rubber O-ring 30 Backplate 31 Rubber seal fitting opening 32 Output shaft outlet 33 Rubber seal 34 Transistor output line 35 Drive circuit 36 Hall IC 37 Rotating shaft fixed bearing fitting stopper step processing 38 Permanent magnet configuration (rotor) 39 Electromagnet coil configuration (stator) 40 Air Gap

Claims

[Claim 1] A double power brushless motor has a stator sandwiched and held by a holder, rotors are provided on both magnetic pole faces of the stator, and are configured to rotate, the rotor is composed of a plurality of permanent magnets, one set of which is composed of a pair of north and south poles on the electromagnetic pole face side of the electromagnetic coil of the stator, the total number of permanent magnets is a multiple of 2, the stator is composed of the electromagnetic coils, the total number of electromagnetic coils is composed of a multiple of the number of phases, and the ratio of the total number of permanent magnets to the total number of electromagnetic coils is not an integer, the permanent magnet configuration of the rotor and the electromagnetic coil configuration of the stator In the double power brushless motor, two magnet configurations required for rotation are constructed with a single set of the permanent magnet configurations, and one set of the electromagnetic coil configuration rotates two sets of the permanent magnet configurations, the multiple permanent magnets are trapezoidal, and the long and short sides on one side have stepped protrusions to prevent them from falling out as a countermeasure against peeling, and gaps are provided between adjacent permanent magnet insertion openings so that they do not interfere with each other, and the permanent magnet insertion openings have cutouts to accommodate the protrusions, and the multiple permanent magnets are inserted into the openings and pressed down with magnetic circuit steel plates to fix the multiple permanent magnets.

Images