JP2018085865A - motor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a new brush holder which can efficiently provide a plurality of motors capable of providing a rotation speed corresponding to a use mode and noise measurement, and a lead plate for supplying an electric power, which can be attached to the brush holder.SOLUTION: Each of a positive electrode lead plate and a negative electrode lead plate (70 and 80) is formed of two conductive plates extended from two terminals (TA2(+) to TB1(-)). In each of two conductive plates, a terminal which can be arranged in serial to a coil, an electric conductor/cutting part (S1 and S3) which electrically connects terminals in parallel with the terminal; and an electric conductor/cutting part (S2) coupling the two conductive plates are provided. One surface of a brush holder (34) is structured such that the positive electrode lead plate and the negative electrode lead plate (70 and 80) can be attached.SELECTED DRAWING: Figure 8

Description

  The present invention relates to a current supply lead conductor for supplying a current to a commutator used in a motor, a holder for attaching the lead conductor, and a motor having the holder.

  It is known that the rotational speed of the motor changes by varying the number of electrodes supplied to the rotor windings.

  For example, a motor has an electric rotor composed of a rotor and a commutator, the commutator is composed of a plurality of segments (also referred to as commutator pieces), and the rotor has a plurality of windings. The plurality of extended conductors are electrically connected to the plurality of segments. Furthermore, the motor has at least two brushes for different potentials. In order to apply the different potentials to the brushes, at least two brushes are connected to either the positive side (higher side) or the negative side (lower side) of the power source.

  Each of the at least two brushes is in contact with each of at least two of the plurality of segments simultaneously. When the brush and the segment are in electrical contact, a current flows from the brush to the segment, and further, a current flows to a winding that is electrically connected to the segment.

  If the number of segments supplying current at a time is varied, the number of parallel circuits of windings from that segment to the rotor will change, and the resistance of the electric rotor will also change, thereby changing from segment to rotor winding. The value of the supplied current also changes. As a result, since the force due to the interaction between the current and the magnetic field also changes, the rotational speed of the electric rotor becomes different.

  Therefore, as a method for varying the rotation speed of the electric rotor, a plurality of three, four, or more brushes are provided, and the positive side (higher side) and / or the negative side (lower side) of the power source are provided. A technique is known in which a switch is disposed between each of the plurality of brushes and the number of segments for supplying current at a time is varied by electrically controlling opening and closing of the switch.

  For example, in FIG. 1 of Japanese Patent Publication No. 4-56557, open / close switches S1 to S3 are respectively interposed between three brushes BR1 to BR3 of four brushes and the positive side of the power source, and the open / close switches are provided. A technique is disclosed in which the number of brushes used to actually supply power to the commutator is changed according to the opening and closing of S1 to S3. FIG. 4 of the same document discloses a configuration in which four open / close switches are provided in all of the four plusi BR1 to BR4.

  Further, in FIG. 3 of Japanese Patent Application Laid-Open No. 9-23627, switches SW1 to SW3 are disposed between the electrical paths of the power source and the three brushes, and the switches SW1 to SW3 are controlled to be opened and closed.

  However, in any case, a configuration in which a switch is provided is required, and a new area for providing an area for the switch and a circuit for controlling the switch is required.

  On the other hand, a number of lead conductors corresponding to the number of brushes are electrically connected to each brush in parallel, and the energization pattern supplied from the external power source to the lead conductors is changed, so that the brushes to the commutator are changed. There is also a known direction of controlling the number of brushes supplied for power supply.

  For example, FIG. 3 of JP-A-2006-59176 is a simplified diagram showing the arrangement of the brushes 22 and the connection state between the external power sources for the brushes 22. As is clear from the figure, the motor 1 is provided with six power supply terminals 25 corresponding to the number of the six brushes 22, and each of the brushes 22 is connected to the power supply terminals 25. Yes. 6 and 7 exemplify a case where all six brushes are energized, a case where four of the six brushes are energized, and a case where two brushes are energized according to the energization pattern. Yes. Furthermore, FIG. 21 and FIG. 22 illustrate an energization pattern in which eight brushes are the basic configuration and six, four, or two brushes are actually used for power supply.

Japanese Examined Patent Publication No. 4-56557 Japanese Patent Laid-Open No. 9-23627 Japanese Patent Laid-Open No. 2006-59176

  The configuration provided with the switch, which is the configuration disclosed in Japanese Patent Publication No. 4-56557 and Japanese Patent Laid-Open No. 9-23627, has a merit that a single motor can provide different rotational speeds. The area must be secured. In addition, a new circuit configuration and control device for controlling the switch and an area for the circuit must be prepared, which has been a major obstacle for providing a small and lightweight motor.

  Further, as in JP-A-2016-59176, if the energization circuit is fixedly provided for each brush as the number of fixed brushes, the wiring is uniquely fixed. The type of mode is restricted and lacks versatility.

  In particular, today, the demand for noise regulation is also increasing. In addition to wiring to the brush, as an EMC measure for noise reduction, the necessity of arranging the coil L directly between the power supply terminal and the brush, The need to provide a capacitor between the terminal and the terminal is increasing, and it is impossible to cope with the method of supplying power from the outside by changing the power supply pattern according to the power supply mode.

  Therefore, there has been a demand for a new technique that can efficiently provide a plurality of motors having different rotational speeds depending on the object of use and capable of taking noise countermeasures.

  The present invention has been made paying attention to such a problem.

The present invention is a lead conductor that is attached to a brush holder for mounting a brush for a motor and supplies power supplied from a power source to the brush,
Lead conductors are two terminals for positive electrodes (TA2 +, TA1 +), two terminals for negative electrodes (TB2-, TB1-), and conductive materials extending from the two positive terminals (TA2 +, TA1 +), respectively. And a conductor extending from each of the two negative terminals (TB2-, TB1-),
The first coil terminal (P1 (A)) for electrical connection with the first coil is provided at the end of the conductor of one of the two positive terminals (TA2 +). And the conductor of the one terminal (TA2 +) branches to the conductor provided as the first electric conduction / cutting unit (S1), and further the first electric conduction / cutting unit Branching at the end of (S1), the first brush feeding terminal (R1) is formed,
The conductor branched to the other side is connected to the second coil terminal (P1 (B)) corresponding to the first coil terminal (P1 (B)) so that the first coil (L1) can be connected to the second coil. A fourth coil terminal (P2 (B)) electrically connected by the two electrical conducting / cutting portions (S2) is formed to be electrically connected to the second coil;
The conductor branched to the other side further extends to form a third brush feeding terminal (R3),
The conductor of the other one terminal (TA1 +) of the two positive electrode terminals cooperates with the fourth coil terminal (P2 (B)) to connect the second coil. Coil terminals (P2 (A)) are provided,
Further, the third coil terminal (P2 (B)) is connected to the third coil terminal (P2 (B)) through the third electrical conduction / cutting unit (S3) in electrical communication with the third coil terminal (P2 (A)). The two terminals (TA2 +, TA1 +) for the positive electrode are integrally formed by being electrically connected to the conductor extending to the brush feeding terminal (R3) 3,
A conductor of one terminal (TB2-) of the two negative terminals is provided with a fifth coil terminal (P3 (A)) for electrical connection with the third coil,
The conductor of one terminal (TB2-) branches to a conductor that serves as a fourth electrical conduction / disconnection (S4),
The second brush feeding terminal (R2) is formed by further branching at the tip of the fourth electric conduction / cutting part (S4),
The conductor branched to the other side is connected to the sixth coil terminal (P3 (B)) corresponding to the fifth coil terminal (P3 (A)), so that the third coil (L3) can be connected, An eighth coil terminal (P4 (B)) electrically connected by the electric conduction / cutting part (S5) of 5 is formed to electrically connect to the fourth coil;
The conductor branched to the other side further extends to form a fourth brush feeding terminal (R4),
The conductor of the other one terminal (TB1-) of the two negative terminals is connected to the eighth coil (P4 (B)) for connecting the fourth coil in cooperation with the eighth coil terminal (P4 (B)). 7 coil terminals (P4 (A)) are provided, and further, via a sixth electrical conduction / disconnection unit (S6) in electrical communication with the seventh coil terminals (P4 (A)). By electrically connecting with the conductor extending from the eighth coil terminal (P4 (B)) to the fourth brush power supply terminal (R4), two terminals for the negative electrode (TB2-, TB1-) is integrally formed,
A lead conductor configured to be attached to one surface of a brush holder is provided.

  Further, in the lead conductor of the present invention, the conductor is a plate-like conductor.

  Alternatively, in the lead conductor of the present invention, the conductor is made of a plate-like conductor, and a part of the plate-like conductor is bent, and the brush conductor (34) on which the lead conductor is placed is placed. It is configured to be insertable into the provided slit.

  Alternatively, in the lead conductor of the present invention, the conductor is made of a plate-like conductor, the first to eighth coil terminals are erected from the plate-like conductor, and the lead conductor is placed thereon. The brush holder (34) is configured to be exposed to a surface opposite to the surface on which the lead conductor is placed through a hole provided for each terminal.

  Further, the lead conductor of the present invention is provided with the first brush feeding terminal (R1) at the second and fifth electric conduction / cutting portions (S2, S5) so as to be used for motor operation by four terminals. And the third brush feeding terminal (R3) and the second brush feeding terminal (R2) and the fourth brush feeding terminal (R4) are electrically separated from each other.

  Further, the lead conductor of the present invention is configured in a state where the first electrical conduction / cutting portion (S1) and the fourth electrical conduction / cutting portion (S4) are cut.

  Furthermore, the lead conductor of the present invention includes a conductive portion of the first electric conduction / cutting portion (S1) and the fourth electric conduction / cutting portion (S4), one terminal for positive electrode (TA2 +) and the first electric conduction / cutting portion (S4). Terminal (P1 (A)) and the conductive part between them, and one terminal (TB2-) for the negative electrode, third terminal (P3 (A)) and the conductive part between them. It has a configuration that does not.

  Further, in the lead conductor of the present invention, the first and third electric conduction / cutting portions (S1, S3) and the fourth and sixth electric conduction / cutting portions (S4, S6) are cut. ing.

  Furthermore, the lead conductor of the present invention is in a state where at least the conductive portions of the third and sixth electric conduction / cutting portions (S3, S6) are cut.

  Furthermore, the lead conductor of the present invention is in a state where all of the first to sixth electric conduction / cutting portions (S1 to S6) are cut.

  Furthermore, the present invention provides a brush holder having a configuration in which the lead conductor disclosed above can be placed on one surface.

Further, the brush holder of the present invention has a configuration in which four brush boxes can be placed on the circumference at equal intervals, and the first to fourth coil terminals (P1 (P1 ( A), P1 (B), P2 (A), P2 (B)), the two coils are connected,
The other two coils are connected to the region between adjacent brush boxes on the opposite side by the fifth to eighth coil terminals (P3 (A), P3 (B), P4 (A), P4 (B)). It is the composition which becomes.

  Furthermore, in the brush holder of the present invention, a slit is partially formed, a part (73, 83) of the lead conductor made of a plate-like conductor is bent at approximately 90 degrees, and the bent plate portion is formed in the slit. It is inserted.

  In the brush holder according to the present invention, the first and second brush feeding terminals (R1, R2) and the third and fourth brush feeding terminals (R3, R4) are sandwiched between two different brush boxes. The region is different from the region between the brush boxes where the first to fourth coils are provided.

  The present invention further provides a motor provided with the brush holder.

It is sectional drawing of the motor 100 in one Embodiment of this invention. It is an exploded view of the motor 100 of FIG. It is the internal structure figure which cut and saw the some housing | casing of the motor 100 of FIG. It is the figure which looked at the electric rotation part 1 of the motor 100 of FIG. 1 from the rotating shaft direction. FIG. 3 is a connection diagram between each segment 21 of the commutator 20 and the teeth 13 of the rotor 10. It is a circuit diagram of each operation mode. It is a circuit diagram of each operation mode. FIG. 7 is a wiring structure diagram according to an embodiment of the present invention for enabling the circuit diagrams of the respective operation modes shown in FIGS. 6A and 6B to be practiced with one brush holder. FIG. 8 is an assembly diagram of a brush holder and a lead conductor according to an embodiment of the present invention obtained by developing the wiring structure diagram of FIG. 7 on a brush holder as a lead conductor. FIG. 5 is a perspective view of a plus (+) lead conductor 70 according to an embodiment of the present invention. It is the top view which looked at the lead conductor 70 of FIG. 9A from the upper surface. FIG. 9B is a side view of the lead conductor 70 of FIG. 9A. FIG. 9B is a bottom view of the lead conductor 70 of FIG. 9A. FIG. 6A is a perspective view of a minus (−) side lead conductor 80 according to an embodiment of the present invention. Similarly, (b) is a perspective view of the negative lead conductor 80 and is a conductor that does not have the body ground portion 84 as an EMC measure. It is the top view which looked at the lead conductor 80 of FIG. 10A from the upper surface. FIG. 10B is a side view of the lead conductor 70 of FIG. 10A (a). FIG. 10B is a bottom view of the lead conductor 70 of FIG. 10A. It is a top view of the brush holder for enabling the wiring structure diagram of FIG. It is a reverse view of the brush holder for enabling the wiring structure figure of FIG. It is an assembly drawing of the brush holder and lead conductor obtained by cutting all of the electric conduction / cutting portions S1 to S6 provided in a plurality of regions of the lead conductor incorporated in the brush holder. It is an assembly drawing of the brush holder and lead conductor obtained by cutting S2 and S5 of the electric conduction / cutting portions S1 to S6 provided in a plurality of regions of the lead conductor incorporated in the brush holder. S1, S3, S4 and S6 of the electric conduction / cutting portions S1 to S6 provided in a plurality of regions of the lead conductor incorporated in the brush holder are cut, and the terminal TA2 (+) and the terminal TB2 (−) FIG. 3 is an assembly diagram of a two-terminal brush holder and lead conductors from which a wire is removed. A two-terminal brush in which only the terminals S1 and S4 after the electric conduction / cutting portions provided in a plurality of regions of the lead conductor incorporated in the brush holder are cut, and the terminals TA2 (+) and the terminal TB2 (−) are removed. It is an assembly drawing of a holder and a lead conductor. FIG. 13A is a top view and a back view of the brush holder assembly 30 for the HM (4T) mode. FIG. 13B is a top view and a back view of the brush holder assembly 30 for the HM (2T) mode. FIG. 13C is a top view and a back view of the brush holder assembly 30 for the HM-EMC (4T) mode. FIG. 13D is a top view and a back view of the brush holder assembly 30 for the HM-EMC (2T) mode.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

With reference to FIG. 1 thru | or FIG. 3, an example of the structure of the motor 100 by this invention is demonstrated.
FIG. 1 is a cross-sectional view of a motor 100 according to this embodiment. The motor 100 has an electric rotating unit 1, and the electric rotating unit 1 is supported by an upper cover (yoke) 40 and a bottom cover (end cover) 50 so as to rotate together with a rotating shaft (shaft) 4 thereof. .

  FIG. 2 is an exploded perspective view in which the motor 100 is disassembled in the axial direction of the rotation shaft (shaft) 4 of the electric rotating unit 1, and FIG. It is the perspective view which showed the structure partially.

  The motor 100 includes an electric rotating part 1 and a brush holder assembly 30, and an upper cover 40 and a bottom cover 50 that sandwich the electric rotating part 1 and the brush holder assembly 30 and house them therein. .

  The upper cover 40 and the bottom cover 50 support bearings that are supported so that the rotation shaft (shaft) 4 of the electric rotating unit 1 can rotate.

  The electric rotating unit 1 has a rotor 10 and a commutator 20. The rotor 10 and the commutator 20 are fixed to the rotating shaft (shaft) 4 so as to rotate integrally with the rotating shaft (shaft) 4.

  The brush holder assembly 30 includes a disk-shaped brush holder 34, and the brush holder 34 has a receptacle 33. In the central portion of the brush holder 34, a hole 31 through which at least the rotating shaft (shaft) 4 can pass is formed. The brush holder 34 is fixed by being sandwiched between the upper cover 40 and the bottom cover 50 so that the receptacle 33 which is a part of the brush holder 34 is opened to the outside of the motor 100 and is coupled to the external power plug.

  The brush holder 34 has a first surface facing the rotor 10 and a second surface opposite to the first surface. A plurality of brush boxes 37 are attached to the first surface of the brush holder 34 around the hole 31 at equal intervals. A brush is slidably accommodated inside the brush box 37. Each brush box 37 is attached so as to be fixed to the brush holder 34 so that the sliding direction (advancing and retracting direction) of the brush accommodated in each brush box 37 is directed to the axial direction of the rotation shaft (shaft) 4. The brushes in the box 37 are urged in the direction of the rotation axis (shaft) 4 by springs 38 provided on the respective boxes.

  The brush holder 34 is made of an insulating material and can be made, for example, by integrally molding a resin.

  The position and number of the arrangement of the brush boxes 37 can be appropriately determined according to the purpose of use, but here, the brush holder assembly 30 using four brush boxes 37 is illustrated. In this example, in the brush box 37, adjacent brush boxes 37 around the hole 31 of the brush holder 34 are arranged at equal intervals on the circumference at an angle of 90 degrees.

  The commutator 20 fixed to the rotating shaft (shaft) 4 has an outer peripheral surface concentric with the rotating shaft (shaft) 4. The outer peripheral surface is divided into a plurality of equal intervals to form segments 21, and the segments are insulated.

  Each segment 21 can be made of a conductive metal, and is supported and fixed to an insulating commutator body 23 made of, for example, resin.

  The outer peripheral surface of the segment 21 exposed in the radial direction of the commutator 20 is arranged so as to be in electrical contact with the surface of the tip of the brush in the direction in which the brush is urged.

  The segments 21 that come into contact with the tips of the brushes move one after the other according to the rotation of the commutator 20, so that the segment 21 for supplying power to the rotor 10 switches according to the rotation of the commutator 20.

  FIG. 4 is a view for illustrating the relationship between the commutator 20 and the rotor 10 as viewed from the axial direction of the rotating shaft (shaft) 4. In particular, this drawing conceptually shows the relationship between the connection of each segment 21 of the commutator 20 of the motor and the winding of the teeth 13 of the rotor 10.

  FIG. 5 is a connection diagram between each segment 21 of the commutator 20 and the teeth 13 of the rotor 10.

  In this example, 20 segments 21 are arranged at equal intervals on the circumference around the rotation axis (shaft) 4. Accordingly, when the rotation shaft (shaft) 4 rotates, one brush makes electrical contact with one of the 20 segments 21 in order. Each segment 21 is provided with a hook 21a, and a conductor serving as a winding for supplying power from the segment 21 to the rotor 10 is hung on the hook 21a.

  A rotor core 11 formed concentrically with the rotation shaft (shaft) 4 and extending in the axial direction is provided in the vicinity of the commutator 20 on the radially outer side of the rotation shaft (shaft) 4. The rotor 10 is formed from a rotor core 11. The rotor core 11 includes a plurality of plate-like core elements and has a T-shaped tooth 13 as viewed from the axial direction. The plurality of teeth 13 are arranged at equal intervals in the circumferential direction, and the teeth 13 are provided radially outward of the rotating shaft (shaft) 4 in the radial direction. In this example, the rotor 10 is composed of 20 teeth 13.

  The 20 slots 14 formed between the adjacent teeth 13 also extend along the axial direction, and similarly, the number of teeth 13 at equal intervals along the circumferential direction, that is, in this example, Twenty are formed.

  In the slot 14, an enamel-coated winding 16 (see FIG. 4) is usually wound around the tooth 13 via an insulator.

  As shown in FIG. 5, the upper cover 40 is arranged on the circumference of the teeth 13 so as to face the teeth 13 of the rotor 10 so as to face the teeth 13 with a slight distance therebetween. Four permanent magnets are arranged at intervals. As a result, a DC motor including four magnetic poles, twenty slots 14, and twenty segments (commutator pieces) 21 can be provided.

  At the end of each segment 21 of the commutator 20 on the rotor 10 side, there is a hook 21a that can be fixed by winding. In the portion where the winding is hung, the conductor portion is exposed, and the hook 21a and the winding are electrically connected.

  FIG. 5 shows the relationship between the positions of the brushes provided in the four brush boxes 37 at a certain time and the segments 21, the teeth 13 and the slots 14, and the magnets 43 arranged around the rotor 10. For reference, in FIG. 4 and FIG. 5, the numbers of the hooks of the segments 21 and the numbers of the teeth 13 are given in ascending order toward the rotation direction of the electric rotating unit 1.

  The four brushes are supplied with + (plus) and-(minus) electricity alternately in the circumferential direction, and the S-pole and N-pole magnets 43 alternately correspond to the positions of the brushes. Arranged in the upper cover 40, the upper cover 40 functions as a yoke.

  The rotor 10 is formed by winding a winding between predetermined slots 14.

  An example of the winding will be briefly described. As shown in FIG. 4, for example, in the hook provided in the segment 21 of the number 10, the winding 16 started from the winding start point SP is 11 and 12. Enter the slot between adjacent teeth 13 and wind the entire teeth 13 from No. 11 to No. 8, slot 14 between adjacent No. 8 and No. 13 teeth, and No. 11 and No. 12 teeth. A coil is formed by winding a predetermined number of times through the slots 14 between the thirteen. Next, the winding which came out of the slot 14 between the teeth 13 of the 8th and 7th is hooked to the segment 21 of the number 9 adjacent to the number 10 which is the next segment 21 in the rotation direction of the segment 21. It is hung. The windings hung on the 9th hook are the slots 14 adjacent to the rotation direction of the previously wound slot 14, that is, the slots between the 10th and 11th teeth 13, and the 6th and 7th teeth 13. The coil is wound a predetermined number of times so as to straddle the four teeth 13 between the slots in between, thereby forming another coil. Each time the winding 16 is wound across the four teeth 13 to form a coil, it is shifted to the hook of the next segment 21 and is shifted to the next adjacent slot so as to straddle the four teeth 13. Wind around. The end of the winding end of the winding that has been completely wound and returned to the end of the hook at the beginning of winding through such a winding process is connected to the end SP (FIG. 4) at the beginning of winding. .

  When current is supplied from the external power source to the rotor 10 obtained according to the above process via the receptacle 33, current is supplied to the rotor 10 by the brush 39 and the segment 21 that contacts the brush 39.

  Since the rotor 10 includes a plurality of coils as described above, a magnetic field is generated in the rotor 10. On the other hand, the electric rotating part 1 rotates together with the rotating shaft (shaft) 4 by the action of magnetic force between the magnetic field and the magnet 43 provided in the upper cover 40. In addition, since the segments 21 for supplying power are switched in order, the windings from the segment 21 to the rotor 10 to be supplied also move, so that the motor can keep rotating at a predetermined speed. It becomes.

  Here, different power supply patterns can be provided depending on the number and position of the brushes.

  For example, FIG. 6A uses four brushes, three brushes, and two brushes, and a power supply pattern in a high-speed rotation mode (High Mode), a medium-speed rotation mode (Middle Mode), and a low-speed rotation mode (Low Mode). It shows the electric circuit diagram of the motor that can be. Furthermore, since there is a strong demand for EMC countermeasures today, FIG. 6A also shows an electric circuit diagram of a motor that can be operated in a mode in which EMC countermeasures are added in addition to each mode. Yes.

  The rotation mode (High Mode), middle speed rotation mode (Middle Mode), and low speed rotation mode (Low Mode) in FIG. 6A are simplified to be HM (4T), MM (3T), and LM (2T). Called. Here, the first two letters indicate the relative level of rotation speed, and the number in parentheses indicates the number of terminals used. That is, HM means high-speed rotation, and 4T means use of four terminals. MM means medium speed rotation and 3T means use of three terminals. LM means low-speed rotation, and 2T means use of two terminals. Also, by adding the letters “EMC” to each abbreviation, this indicates that the motor has a mode in which a coil (L) and a capacitor (C) are added to take EMS countermeasures. Capacitor mounting is optional and can be mounted as necessary.

  In addition to the above modes, a high-speed rotation mode (HM (2T)) corresponding to two terminals and a high-speed rotation mode (HM-EMC (2T)) in which EMC countermeasures are applied to the two terminals are also required. ing.

  FIG. 6B shows an electric circuit diagram of a motor that achieves high-speed rotation by branching wiring from two terminals to two brushes, that is, a circuit in HM (2T) mode, and L and C before branching. The electric circuit diagram of the motor which inserted and gave the EMC countermeasure and enabled high speed rotation, ie, the circuit of HM-EMC (2T) mode, is shown.

  Therefore, a new method for efficiently providing the motor in each mode of FIGS. 6A and 6B is provided.

  FIG. 7 shows a wiring structure diagram of a common lead conductor according to an embodiment of the present invention, and FIG. 8 shows a brush holder 34 in which the common lead conductor is arranged.

  The common lead conductor is a wiring structure for supplying power from the external power source of the motor 100 to the plurality of brushes 39 through the terminals TA2 (+), TA1 (+), TB1 (−) and TB2 (−) of the receptacle 33. And is configured to be attachable to the brush holder 34.

  By using the common lead conductor as it is or by cutting a part of the common lead conductor so as to correspond to all modes of FIGS. 6A and 6B, a motor having an arbitrary mode can be provided. It becomes possible.

  Referring to FIG. 7, the common lead conductor includes a lead conductor 70 for the plus (+) side and a lead conductor 80 for the minus (−) side.

  The plus (+) side lead conductor 70 has two plus terminals TA2 (+) and TA1 (+).

  One conductor of TA2 (+) branches into two conductors on the way, and a coil connection portion (generically referred to as “1”) having two terminals P1 (A) and P1 (B) for connecting the coil L1. P1 ”) and the electric conduction / cutting portion S1 are arranged in parallel.

  That is, the coil connection portion P1 is an arrangement region for arranging the coil L1, and one end of the coil L1 can be connected to the terminals P1 (A) and P1 (B) of the connection portion P1. Yes. The electric conduction / cutting part S1 is an area for cutting in accordance with the mode of the motor to be used, or for use in the conductive state as it is.

  The electric conductor from the terminal P1 (B) and the electric conductor from the electric conduction / cutting part S1 are combined into one electric conductor, and further, a brush feeding terminal (pad) is provided so that current can be supplied to one brush 39. ) Extends to R1. The brush power supply terminal (pad) R1 is an area to which one end of the pigtail W1 for electrical connection with the one brush 39 is connected.

  The structure of the conductor from the TA1 (+) terminal is basically the same as that of the TA2 (+) conductor. The conductor from TA1 (+) branches into two conductors on the way, and the connection part P2 composed of the coil terminals P2 (A) and P2 (B) and the electric conduction / cutting part S3 are arranged in parallel. Has been.

  The connection portion P2 is an arrangement region for arranging the coil L2, and is configured such that one end of the coil L2 can be connected to the terminals P2 (A) and P2 (B) of the connection portion P2. The electric conduction / cutting unit S3 is an area for cutting in accordance with the mode of the motor to be used, or for use in the conductive state as it is.

  The electric conductor from the terminal P2 (B) and the electric conductor from the electric conduction / cutting part S3 are combined into one electric conductor, and further, a brush feeding terminal (pad) is provided so that current can be supplied to one brush 39. ) Extends to R3. The brush feeding terminal (pad) R3 is an area to which one end of the pigtail W3 for electrical connection with the one brush 39 is connected.

  Here, the conductor from the terminal TA2 (+) and the conductor from the terminal TA1 (+) are provided as the electric conduction / cutting part S2 on the way to the brush feeding terminals (pads) R1 and R3. The conductors are electrically coupled to each other. This electric conduction / cutting part S2 is also a region that is cut in accordance with the operation mode of the motor, or is maintained as it is without being cut and used in a conductive state.

  Moreover, since the electric conductor from TA2 (+) and the electric conductor from TA1 (+) can be integrated by this electric conduction / cutting portion S2, the lead conductor 70 is manufactured as one component. Can be purchased, and inventory management and delivery management can be performed with a single component.

  The minus (−) side lead conductor 80 is basically the same as the plus (+) side lead conductor 70 and has two minus terminals TB2 (−) and TB1 (−). .

  One conductor of TB2 (−) is branched into two conductors on the way, and a coil connection portion having two terminals P3 (A) and P3 (B) for connecting the coil L3 (collectively “ P3 ”) and the electric conduction / cutting part S4 are arranged in parallel.

  That is, the coil connection portion P3 is an arrangement region for arranging the coil L3, and one end of the coil L3 can be connected to the terminals P3 (A) and P3 (B) of the connection portion P3. Yes. The electric conduction / cutting part S4 is an area for cutting in accordance with the mode of the motor to be used, or for use in the conductive state as it is.

  The electric conductor from the terminal P3 (B) and the electric conductor from the electric conduction / cutting part S4 are combined into one electric conductor, and further, a brush feeding terminal (pad) is supplied so that current can be supplied to one brush 39. ) Extends to R2. The brush power supply terminal (pad) R2 is an area to which one end of the pigtail W2 for electrical connection with the one brush 39 is connected.

  The configuration of the conductor from the TB1 (−) terminal is basically the same as the configuration of the conductor of TB2 (−). The conductor from TB1 (−) branches into two conductors on the way, and the connection part P4 composed of the coil terminals P4 (A) and P4 (B) and the electric conduction / cutting part S6 are arranged in parallel. Has been.

  The connection portion P4 is an arrangement region for arranging the coil L4, and is configured such that one end of the coil L4 can be connected to the terminals P4 (A) and P4 (B) of the connection portion P4. The electric conduction / cutting part S6 is an area for cutting in accordance with the mode of the motor to be used, or for use in the conductive state as it is.

  The electric conductor from the terminal P4 (B) and the electric conductor from the electric conduction / cutting part S6 are combined into one electric conductor, and further, a brush feeding terminal (pad) is provided so that current can be supplied to one brush 39. ) Extends to R4. The brush power supply terminal (pad) R4 is an area to which one end of the pigtail W4 for electrical connection with the one brush 39 is connected.

  Here, the conductor from the terminal TB2 (−) and the conductor from the terminal TB1 (−) are provided as the electric conduction / cutting part S5 on the way to the brush feeding terminals (pads) R2 and R4. The conductors are electrically coupled to each other. This electric conduction / cutting unit S5 is also a region that is cut in accordance with the operation mode of the motor, or is used as it is in a conductive state without being cut.

  Moreover, since the electric conductor from TB2 (−) and the electric conductor from TB1 (−) can be integrated by this electric conduction / cutting portion S5, the lead conductor 80 is manufactured as one component. Can be purchased, and inventory management and delivery management can be performed with a single component.

  As shown in FIG. 8, the lead conductor 70 for the plus (+) side and the lead conductor 80 for the minus (−) side can be commonly attached to the brush holder 34 used in the motor.

  Each terminal TA2 (+), TA1 (+), TB2 (−), TB1 (−) can be arranged in a receptacle 33 provided in the brush holder 34. The receptacle 33 is coupled to a plug from an external power source, and each terminal can be connected to an electric terminal provided on the plug, and is thus fed with a predetermined potential.

  As described above, the shared lead conductors of FIGS. 7 and 8 can be provided with a motor corresponding to each mode with only a little processing necessary for each mode. To be able to provide. The common lead conductor can be constituted by, for example, a plus (+) side lead conductor 70 and a minus (−) side lead conductor 80.

  As already described, the lead conductor 70 for the plus (+) side has three electric conduction / cutting portions S1, S2, S3, coil connection portions P1, P2, and two brush feeding terminals ( Pad) R1 and R3.

  On the other hand, the lead conductor 80 for the minus (−) side also has three electric conduction / cutting portions S4, S5, S6, coil connection portions P3, P4, and two brush feeding terminals (pads) R2, R4. Consists of

  The electric conduction / cutting portions S1 to S6 are cutting regions for cutting off the electric conduction path according to the mode of the motor, and the coil connection portions P1 to P4 connect the coils according to the mode of the motor. It is a terminal area for.

  The brush power supply terminals (pads) R <b> 1 to R <b> 4 are connection regions for fixing the pigtails W <b> 1 to W <b> 4 so that current can be supplied to the brush 39.

  Corresponding to each of the eight modes described in FIG. 6A and FIG. 6B according to the region to be cut out of the electrical conduction / cutting portions S1 to S6 and the region of the terminals P1 to P4 where the coil is disposed. It is possible to provide a motor.

  Table 1 is a table showing an example of correspondence between the mode and the connection.

Here, the portion indicated by “★” in S1 to S6 indicates that the corresponding electric conduction / cutting portion is cut. Moreover, the part shown by "L" of P1-P4 has shown attaching a coil to a corresponding terminal area | region.

  For example, in HM (4T), MM (3T), and LM (2T)), the wiring from each terminal to each brush is independent by separating S2 and S5. This is because the terminal to be used on the power supply side is selected and power is supplied, so that the cut points are the same.

  In HM (2T), only two leads of a plus (+) terminal TA1 (+) and a minus (-) terminal TB1 (-) are used, current is supplied to the four brushes 39, and two terminals are connected. 4-pole high-speed rotation drive can be performed. Therefore, only the electric conduction / cutting parts S1 and S4 are cut. At this time, the leads TA2 (+) and TB2 (−) in the region surrounded by the broken lines D1 and D2 in FIG. 7 are not necessary and can be removed from the brush holder 34.

  In the EMC mode with the choke coil L and capacitor C mounted, all of HM-EMC (4T), MM-EMC (3T) and LM-EMC (2T) are cut from S1 to S6, and the coil L and capacitor C are mounted. To do. In HM-EMC (2T), S1 and S4 are cut, TA2 (+) and TB2 (-) are removed, S3 and S6 are cut, and coil L is mounted in series.

  In the above example, the terminal used on the power supply side (not shown) that supplies power to the receptacle is selected to adjust the speed. However, the speed adjustment can be performed by cutting any electrical conduction / cutting part on the brush holder side. You may do it. In this case, for example, in the case of MM (3T), in addition to cutting S2 and S5, S1 may be cut.

  A specific structure of the basic lead conductors 70 and 80 will be described with reference to FIGS. 9A to 10D with reference to FIG.

  FIG. 9A is a perspective view of the back side (that is, the side facing the brush holder 34 when attached to the brush holder 34) of the lead conductor 70 on the + (plus) side. 9B is a plan view of the lead conductor 70 as viewed from the front side, FIG. 9C is a side view of the lead conductor 70, and FIG. 9D is a bottom view of the lead conductor 70.

  10A is a perspective view seen from the back side of the negative (−) side lead conductor 80 (that is, the side facing the brush holder 34 when attached to the brush holder 34). The lead conductor facing the brush power supply terminal (pad) R4 is provided with a pin 84 as a body grounding portion, and is in electrical contact with the inside of the bottom cover 50 and the frame potential of the bottom cover 50 minus ( The potential of the lead conductor 80 for the-) side is made the same. FIG. 10A (b) shows a lead conductor 80 ′ which is a modified example when the pin 84 is not provided. 10B is a plan view of the lead conductor 80 as viewed from the front side, FIG. 10C is a side view of the lead conductor 80, and FIG. 10D is a bottom view of the lead conductor 80.

  Any of the lead conductors 70 and 80 can be made by punching from one flat conductive metal plate. Hereinafter, the conductor is described as a conductive plate.

  The lead conductive plate 70 has two parallel plate-like terminals TA2 (+) and TA1 (+).

  The lead conductive plate extending from the terminal TA2 (+) avoids the hole 31 of the brush holder 34, and changes the direction in the middle so as to leave the conductive plate arrangement region from the terminal TA1 (+). The coil terminal P1 (A) is terminated so as to be connected to one end of the coil L1, following the coil terminal P1 (A).

  The conductive plate is branched to the outside so as to form the electric conduction / cutting part S1 in the middle, and the conductive plate and the brush power supply terminal (pad) R3 further toward the brush power supply terminal (pad) R1 at the branched end. Branches to a conductive plate toward A coil terminal P1 (B) is provided in the middle of the conductive plate toward the brush feeding terminal (pad) R3. The coil terminal P1 (B) is a terminal for connecting to the other end of the coil L1, and forms a power supply line to the brush power supply terminals (pads) R1 and R3 through the coil L1.

  A coil terminal P2 (B) is provided in the vicinity of the coil terminal P1 (B) in the middle of the conductive plate from the coil terminal P1 (B) toward the brush feeding terminal (pad) R3. . An electric conduction / cutting part S2 is provided between the coil terminal P1 (B) and the coil terminal P2 (B). By cutting the electrical conduction / cutting part S2, the current supplied to the terminal TA2 (+) is blocked from going to the brush power supply terminal (pad) R3.

  The conductive plate extending from the terminal TA1 (+) is bent from the terminal TA2 (+) so that the hole 31 is avoided and the coil terminal P2 (A) is positioned in the vicinity of the coil terminal P1 (A). It extends substantially parallel to a part of the extended conductive plate. Further, the conductive plate extending from the terminal TA1 (+) extends between the coil terminal P1 (A) and the hole 31 of the terminal TA2 (+) and extends between the coil terminal P2 (B) and the coil L2. The coil terminal P2 (A) is formed so that can be arranged. The coil terminal P2 (A) is provided with a region of electrical conduction / cutting part S3, and is connected to the conductive plate between P2 (B) of the coil connection part P2 and the brush feeding terminal (pad) R3. . Depending on whether or not the electrical conduction / cutting portion S3 is cut, current is supplied to the brush feeding terminal (pad) R3 via L2 arranged in the connecting portion P2, or the current from the TA1 (+) terminal is supplied. Different current supply patterns are possible, for example, when supplying directly to the brush feeding terminal (pad) R3 or both the brush feeding terminals (pads) R1 and R3 through the electrical conduction / cutting part S3.

  The minus (−) lead conductive plate 80 is structurally identical to the plus (+) lead conductive plate 70, and the minus (−) lead conductive plate 80 extends in parallel. It has a plate-like terminal TB2 (−) and a terminal TB1 (−).

  The lead conductive plate extending from the terminal TB2 (−) avoids the hole 31 of the brush holder 34 and changes its direction in the middle so as to leave the conductive plate arrangement region from the terminal TB1 (−). The coil terminal P3 (A) is terminated so as to be connected to one end of the coil L3, so as to surround the coil terminal P3 (A).

  The conductive plate is branched to the outside so as to form the electric conduction / cutting part S4 in the middle, and the conductive plate and the brush power supply terminal (pad) R4 further toward the brush power supply terminal (pad) R2 at the branched end. Branches to a conductive plate toward A coil terminal P3 (B) is provided in the middle of the conductive plate toward the brush power supply terminal (pad) R4. The coil terminal P3 (B) is a terminal for connecting to the other end of the coil L3, and forms a power supply line to the brush power supply terminals (pads) R2 and R4 through the coil L3.

  A coil terminal P4 (B) is provided in the vicinity of the coil terminal P3 (B) in the middle of the conductive plate from the coil terminal P3 (B) toward the brush feeding terminal (pad) R4. . Between the coil terminal P3 (B) and the coil terminal P4 (B), an electric conduction / cutting part S5 is provided. By cutting this electrical conduction / cutting part S5, the current supplied to the terminal TB2 (−) is blocked from going to the brush power supply terminal (pad) R4.

  The conductive plate extending from the terminal TB1 (−) is bent so as to avoid the hole 31, and from the terminal TB2 (−) so that the coil terminal P4 (A) is positioned in the vicinity of the coil terminal P3 (A). It extends substantially parallel to a part of the extended conductive plate. Further, the conductive plate extending from the terminal TB1 (−) extends between the coil terminal P3 (A) and the hole 31 of the terminal TB2 (−) and extends between the coil terminal P4 (B) and the coil L4. The coil terminal P4 (A) is formed so that can be arranged. From the coil terminal P4 (A), an electric conduction / cutting section S6 is provided, which is connected to the conductive plate between P4 (B) of the coil connection section P4 and the brush feeding terminal (pad) R4. . Depending on whether or not the electrical conduction / cutting part S6 is cut, current is supplied to the brush feeding terminal (pad) R4 via L4 arranged in the connecting part P4, or the current from the TB1 (−) terminal is supplied. Different current supply patterns are possible, for example, when supplying directly to the brush power supply terminal (pad) R4 or both the brush power supply terminals (pads) R2 and R4 through the electrical conduction / cutting part S6.

  Referring to FIG. 9A and FIG. 10A, all the coil connection terminals P1 (A) to P4 (B) are bent from the respective lead conductive plates, and their tips are folded. The lead terminal / terminal from each coil can be sandwiched and fixed at the folded portion. In this example, spot welding is performed by sandwiching the folded portion. However, other connection methods may be adopted as long as the folded portion is crimped and crimped.

  In the lead conductor 70 and the lead conductor 80, the conductive plate extending from the terminal TA1 (+) has a capacitor connection terminal C1 (A) to which one end of the capacitor C (FIG. 7) can be electrically connected. A capacitor connection terminal C1 (electrically connected to the other end of the capacitor C (FIG. 7) is connected to the conductive plate formed so as to protrude from the surface of the conductive plate and extended from the terminal TB1 (−). B) is formed so as to protrude from the surface of the conductive plate.

  The structure of the brush holder 34 will be described with reference to FIGS. 11A and 11B.

  FIG. 11A shows a plan view of the surface of the brush holder 34 on which the brush box 37 is placed, and FIG. 11B is the opposite surface, the lead conductive plate 70 for the plus (+) side and the minus (−). It is a top view of the surface in which the side lead conductive plate 80 is provided.

  The surface of the brush holder 34 in FIG. 11A has four brush box mounts 35 so that the four brushes are arranged at equal intervals of 90 degrees around the hole 31. And it is comprised so that the two coils L1 and L2 may be simultaneously placed in the area | region pinched between the adjacent brush box mount parts 35. FIG. Further, the other two coils L3 and L4 are arranged at the same time in a region opposite to the hole 31 and sandwiched between two adjacent brush box mount portions 35. Yes.

  The coils L1 and L2 are disposed substantially parallel to each other from the hole 31 to the outside of the brush holder 34 (FIG. 13C (a)). Similarly, the coils L3 and L4 are also arranged substantially parallel to each other from the hole 31 to the outside of the brush holder 34 (FIG. 13C (a)). In addition, as long as all are arrange | positioned in the adjacent brush box 37, you may make it arrange | position radially from the hole 31, for example, not parallel mutually.

  A lead conductive plate 70 is placed on the surface of the coils L1 and L2 opposite to the mounting surface. In order to connect the coil connection portions P1, P2 of the lead conductive plate 70 and the lead terminals / terminals of the coils L1, L2 on the opposite side thereof, the brush holder 34 has a coil connection terminal P1 (A). , P1 (B) and coil connection terminals P2 (A) and P2 (B) are provided with coil connection holes PA1 (A) and PA1 (B) and coil connection holes PA2 (A) and PA2 (B), respectively. It has been. Then, the coil connection terminals P1 and P2 erected through the holes are connected to one end of each of the coils L1 and L2.

  In this example, the coil connection hole PA1 (A) and the coil connection hole PA2 (A) are adjacent to each other between the coils L1 and L2 so that the coil L1 and the coil L2 are placed slightly apart and in parallel. Similarly, the coil connection hole PA1 (B) and the coil connection hole PA2 (B) are also placed adjacent to each other between the coils L1 and L2. Then, the coil terminals P1 (A) and P1 (B) of the coil connection portion P1 are exposed to the coil placement surface of the brush holder 34 through the coil connection hole PA1 (A) and the coil connection hole PA1 (B). A coil L is arranged next to the coil connection hole PA1 (A) and the coil connection hole PA1 (B), and both ends of the coil are exposed to the coil terminals P1 (A ), P1 (B) can be connected.

  The mutual relationship between the positions of the coil connection holes and the coil terminals and the positions of the adjacent coil arrangements and the arrangement positions for connecting the coil terminals is the same in other coil arrangements.

  Instead of placing the coils L1 and L2 apart from each other, they may be placed close to each other and a coil connection hole and a coil terminal may be arranged on both sides of the coils L1 and L2 between adjacent brush boxes. As long as it is arranged in the area formed by the above, it does not limit the arrangement configuration.

  The arrangement configuration described above facilitates the routing of the terminal from each coil, and lead conduction from the terminal TA1 (+) toward the brush feeding terminal (pad) R3 even in a narrow region near the hole 31 of the brush holder 34. An arrangement area of the plate can be secured.

  Coil connection terminals P3 (A) and P3 (B) and coil connection terminals P4 (A) and P4 (B) for coil connection holes PA3 (A), PA3 (B) and coil connection holes PA4 (A) , PA4 (B) is arranged in a brush holder in a symmetrical arrangement relationship with the coil connection holes PA1 (A), PA1 (B) and the coil connection holes PA2 (A), PA2 (B) with the hole 31 as the center. 34 is provided.

  In the region between the adjacent coil connection holes PA1 (A), PA2 (A) and the hole 31, an elongated slit 73A is provided. Similarly, the adjacent coil connection holes PA3 (A) are symmetrically provided. A slit 83A is also provided in a region between PA4 (A) and the hole 31.

  As shown in FIGS. 9A and 10A, both of the lead conductive plate 70 and the lead conductive plate 80 have coil connection terminals P1 (A), P2 (A ) And the coil connection terminals P3 (A) and P4 (A), the lead conductive plate having a surface parallel to the surface of the brush holder 34 is bent by approximately 90 degrees to stand in the direction of the surface of the brush holder 34. Flat slit insertion portions (standing portions) 73 and 83 are provided. Then, the slit insertion portions (standing portions) 73 and 83 are inserted into the corresponding slits 73A and 83A. The slits 73A and the slits 83A extend to the vicinity of the ends of the coils L1 and L2 and the coils L3 and L4 placed on the brush holder 34, thereby securing the arrangement area of each coil.

  Further, of the regions between the adjacent brush boxes 37, the remaining two regions where the coils L1 to L4 are not placed include brush power supply terminals (pads) R1 and R2 and a brush power supply terminal (pad) R3, Holes RA1, RA2 and RA3, RA4 are provided to expose R4 on the brush box mount surface. By connecting the pigtails W1 to W4 to the surfaces of the brush power supply terminals (pads) R1 to R4 exposed through the holes RA1 to RA4, power can be supplied from the terminals TA and TB to the brushes.

  By arranging the regions where the holes RA1 to RA4 are placed and the regions where the L1 to L4 are placed so as to be separated across the brush box 37, a region where the four coils are placed is secured, and the pigtail W1 is placed. ˜W4 does not interfere with the coil.

  Further, the regions where the brush feeding terminals (pads) R1 and R2 are exposed, that is, the conductive plates 70 and 80 extending from the terminals TA1 (+) and TB1 (−) are mutually connected so as to avoid the central hole 31 of the brush holder 34. In a region between the brush boxes corresponding to the position where the direction changes in the direction of separation, a region CA for disposing the capacitor C (FIG. 7, FIG. 13C (a)) and a capacitor connection terminal C1 protruding from each conductive plate The brush holder 34 is provided with holes CA (A) and CA (B) for receiving (A) and the capacitor connection terminal C1 (B). Through the holes CA (A) and CA (B), both terminals of the capacitor C and the capacitor connection terminals C1 (A) and C1 (B) can be electrically connected to each other. As a result, the capacitor C can be arranged and connected between the terminals TA1 (+) and TB1 (−) according to the operation mode. In this example, the capacitor connection terminals C1 (A) and C1 (B) have shapes that can be spot welded with their tips bent and sandwiching one end of each capacitor C. Similar to the connection of other components, any other connection method may be employed as long as it is an electrically connectable method such as soldering or caulking (CRIMP).

  Furthermore, holes SA1 to SA6 are provided in the brush holder 34 at positions where the electric conduction / cutting portions S1 to S6 are arranged. By providing the holes SA1 to SA6, the electric conduction / cutting part can be easily cut.

  Further, the brush holder 34 is provided with a plurality of holes 71A and 81A into which a plurality of fixing pins 71 and 81 (FIGS. 9A and 10A) formed on the lead conductive plates 70 and 80 can be respectively inserted. The lead conductive plates 70 and 80 are positioned and fixed on the brush holder 34 by inserting the pins 71 and 81 into the corresponding holes 71A and 81A and bending the pins 71 and 81, respectively.

  12A to 12D show different cutting patterns of the electric conduction / cutting portions S1 to S6 provided in a plurality of regions of the lead conductor incorporated in the brush holder. FIG. 12A is an assembly diagram of a lead conductor obtained by a pattern for cutting all of the electric conduction / cutting portions S1 to S6. FIG. 12B is an assembly diagram of the lead conductor obtained by the pattern for cutting S2 and S5 of the electric conduction / cutting portions S1 to S6. FIG. 12C is an assembly diagram of the lead conductor obtained by the pattern for cutting S1, S3, S4 and S6 of the electric conduction / cutting portions S1 to S6. FIG. 12D is an assembly diagram of the lead conductor obtained by the pattern for cutting only S1 and S4 after the electric conduction / cutting part.

  Referring to Table 1, the cutting pattern of FIG. 12A corresponds to HM-EMC (4T), MM-EMC (3T) and LM-EMC (2T) modes. The cutting pattern of FIG. 12B corresponds to HM (4T), MM (3T), and LM (2T) modes. The cutting pattern in FIG. 12C corresponds to the HM-EMC (2T) mode. The cutting pattern in FIG. 12D corresponds to the HM (2T) mode.

  As described above, since eight modes can be provided by four cutting patterns, it is only necessary to prepare a small number of types of lead conductor assemblies, and inventory management and manufacturing management become more efficient. . In addition, when an assembly is prepared in advance in response to a prior prediction of motor demand, the possibility of a flexible response is expanded even if a motor mode change required due to a sudden change in demand occurs. It will be.

  13A-13D show the brush holder assembly 30 assembled for different modes. FIG. 13A is a top view (FIG. 13A (a)) and a back view (FIG. 13A (b)) of the brush holder assembly 30 for the HM (4T) mode. FIG. 13B is a top view (FIG. 13B (a)) and a back view (FIG. 13B (b)) of the brush holder assembly 30 for the HM (2T) mode. FIG. 13C is a top view (FIG. 13C (a)) and a back view (FIG. 13C (b)) of the brush holder assembly 30 for the HM-EMC (4T) mode. FIG. 13D is a top view (FIG. 13D (a)) and a back view (FIG. 13D (b)) of the brush holder assembly 30 for the HM-EMC (2T) mode.

  Even in a mode where the number of terminals to be used is different, each brush holder assembly 30 has a brush 39 stored in each of the four brush boxes 37 so that the four brushes make contact with the commutator 20. Yes. Therefore, the pigtails W1 to W4 are connected to the brush power supply terminals (pads) R1 to R4, respectively.

  As a result, the balance of the entire holder can be maintained, and one type of brush holder can be prepared as a base on which the lead conductor 70 and the lead conductor 80 are placed in the pre-manufacturing process. Process management becomes easy. That is, a brush holder on which the lead conductor according to the present invention is placed is prepared as a base, and an EMC part is placed as necessary to complete the intermediate body of the brush holder assembly, and the motor is required thereafter. Depending on the mode, the necessary electrical conduction / cutting portions S1 to S6 may be cut, and the efficiency of the manufacturing process and the rapid supply of the motor can be performed.

  It should be noted that the final brush holder assembly obtained by the present invention does not exclude changing the operation mode of the motor by switching the power supply outside the motor, and can be used together with the switching of the external power supply. , As already explained. Therefore, the correspondence between the cutting patterns of the electric conduction / cutting units S1 to S6 and the operation modes shown in Table 1 and the operation modes described in FIGS. 13A to 13D are merely examples, and the cutting patterns provided in the present invention are provided. The same lead conductivity can be used internally in the motor by using both a motor using a selectable lead conductor and switching of external power supply (for example, switching to which line of the motor terminal current is supplied or not). Even body cutting patterns can be in different modes of operation. A motor incorporating this lead conductor by such use is suitable for a fan motor for cooling a radiator of an automobile, for example, and can also be used for a motor that needs speed adjustment and noise countermeasures. Therefore, it is possible to provide a motor having a wide range of use.

1 Electric rotating part 4 Rotating shaft (shaft)
10 Rotor 11 Rotor core 13 Teeth 14 Slot 16 Winding 16
20 Commutator 21 Segment 21a Hook 23 Commutator Body 30 Brush Holder Assembly 31 Hole 33 Receptacle 34 Brush Holder 35 Brush Box Mount 37 Brush Box 38 Spring 38
39 Brush 40 Upper cover (yoke) 40
43 Magnet 50 Bottom cover (end cover)
70 + (Plus) Side Lead Conductor 71 Fixing Pin 80-(Minus) Side Lead Conductor 81 Fixing Pin 100 Motors L1 to L4 Coils P1 to P4 Coil Connections P1 (A), P1 (B) , P2 (A), P2 (B), P3 (A), P3 (B), P4 (A), P4 (B) Coil terminals R1 to R4 Brush feeding terminals (pads)
S1-S6 Electrical conduction / cutting parts W1-W4 Pigtail

On the other hand, a number of lead conductors corresponding to the number of brushes are electrically connected to each brush in parallel, and the energization pattern supplied from the external power source to the lead conductors is changed, so that the brushes to the commutator are changed. A method of controlling the number of brushes supplied for power supply is also known.

Claims (15)

A lead conductor attached to a brush holder for mounting a brush for a motor and for supplying power supplied from a power source to the brush,
The lead conductor is
Two terminals for positive electrodes (TA2 +, TA1 +),
Two terminals for the negative electrode (TB2-, TB1-),
Conductors respectively extending from the two positive terminals (TA2 +, TA1 +);
A conductor extending from each of the two negative terminals (TB2-, TB1-),
A first coil terminal (P1 (A)) for electrical connection to the first coil is provided at the end of the conductor of one of the two positive terminals (TA2 +). Is provided,
The conductor of the one terminal (TA2 +) branches to a conductor provided as a first electrical conduction / disconnection unit (S1),
The first brush feeding terminal (R1) is formed by further branching at the tip of the first electric conduction / cutting part (S1),
The conductor branched to the other side is connected to the second coil terminal (P1 (B)) corresponding to the first coil terminal (P1 (B)) so that the first coil (L1) can be connected to the second coil. A fourth coil terminal (P2 (B)) electrically connected by the two electrical conducting / cutting portions (S2) is formed to be electrically connected to the second coil;
The conductor branched to the other side further extends to form a third brush feeding terminal (R3),
The conductor of the other one of the two positive terminals (TA1 +) is connected to the second coil in cooperation with the fourth coil terminal (P2 (B)). A third coil terminal (P2 (A)) is provided, and further via a third electrical conduction / disconnection unit (S3) in electrical communication with the third coil terminal (P2 (A)). Then, by electrically connecting with the conductor extending from the fourth coil terminal (P2 (B)) to the third brush power supply terminal (R3), the two positive terminals (TA2 +, TA1 +) is integrally formed,
The fifth coil terminal (P3 (A)) is electrically connected to the third coil at the end of the conductor of one of the two negative terminals (TB2-). Provided for
The conductor of the one terminal (TB2-) branches to a conductor provided as a fourth electric conduction / cutting part (S4),
The second brush feeding terminal (R2) is formed by further branching at the tip of the fourth electric conduction / cutting part (S4),
The conductor branched to the other side is connected to the sixth coil terminal (P3 (B)) corresponding to the fifth coil terminal (P3 (A)), so that the third coil (L3) can be connected, An eighth coil terminal (P4 (B)) electrically connected by the electric conduction / cutting part (S5) of 5 is formed to electrically connect to the fourth coil;
The conductor branched to the other side further extends to form a fourth brush feeding terminal (R4),
The conductor of the other one terminal (TB1-) of the two negative terminals is connected to the fourth coil in cooperation with the eighth coil terminal (P4 (B)). The seventh coil terminal (P4 (A)) is provided, and a sixth electric conduction / cutting unit (S6) that is in electrical communication with the seventh coil terminal (P4 (A)) is provided. The two negative terminals (TB2) are electrically connected to the conductor extending from the eighth coil terminal (P4 (B)) to the fourth brush power supply terminal (R4). -, TB1-) are integrally formed,
A lead conductor configured to be attached to one surface of a brush holder.   The lead conductor according to claim 1, wherein the conductor is made of a plate-like conductor.   The conductor is composed of a plate-like conductor, and a part of the plate-like conductor is bent and is configured to be inserted into a slit provided in the brush holder (34) on which the lead conductor is placed. The lead conductor according to claim 1.    The conductor is made of a plate-shaped conductor, and the first to eighth coil terminals are erected from the plate-shaped conductor, and the respective terminals are mounted on the brush holder (34) on which the lead conductor is placed. The lead conductor according to claim 1, wherein the lead conductor is configured to be exposed to a surface opposite to a surface on which the lead conductor is placed through the provided hole.   A first brush power supply terminal (R1) and a third brush power supply terminal in the second and fifth electric conduction / cutting portions (S2, S5) so as to be used for motor operation by four terminals. (R3) and between the second brush power supply terminal (R2) and the fourth brush power supply terminal (R4) are electrically separated from each other. Lead conductor.   The lead conductor according to any one of claims 1 to 4, wherein the first electrical conduction / cutting portion (S1) and the fourth electrical conduction / cutting portion (S4) are cut off.   Conductive portions of the first electric conduction / cutting part (S1) and the fourth electric conduction / cutting part (S4), the one terminal for positive electrode (TA2 +) and the first terminal for coil (P1 ( A)) and no conductive portion therebetween, and the one terminal (TB2-) for the negative electrode and the third coil terminal (P3 (A)) and no conductive portion therebetween. The lead conductor according to any one of 1 to 4.   5. The device according to claim 1, wherein the first and third electric conduction / cutting portions (S <b> 1, S <b> 3) and the fourth and sixth electric conduction / cutting portions (S <b> 4, S <b> 6) are cut. The lead conductor as described.   The lead conductor according to any one of claims 1 to 4, wherein at least conductive portions of the third and sixth electric conduction / cutting portions (S3, S6) are cut.   The lead conductor according to any one of claims 1 to 4, wherein all of the first to sixth electric conduction / cutting portions (S1 to S6) are cut.   The brush holder which can mount the lead conductor of Claim 1 thru | or 10 on one surface. The brush holder according to claim 11, wherein four brush boxes can be placed on the circumference at equal intervals,
Two coils are connected to the region between the adjacent brush boxes by the first to fourth coil terminals (P1 (A), P1 (B), P2 (A), P2 (B)),
The other two coils are connected to the region between adjacent brush boxes on the opposite side by the fifth to eighth coil terminals (P3 (A), P3 (B), P4 (A), P4 (B)). A brush holder designed to be used. A slit is partly formed,
The brush holder according to claim 11, wherein a part (73, 83) of the lead conductor made of a plate-like conductor is bent at approximately 90 degrees, and the bent plate portion is inserted into the slit. . The first and second brush feeding terminals (R1, R2) and the third and fourth brush feeding terminals (R3, R4) are configured to be provided in a region sandwiched between two different brush boxes. ,
The brush holder according to claim 11, wherein the region is a region different from a region between the brush boxes in which the first to fourth coils are provided. A motor provided with the brush holder according to claim 11.