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WO2019244873A1 - Motor - Google Patents

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Publication number
WO2019244873A1
WO2019244873A1 PCT/JP2019/024044 JP2019024044W WO2019244873A1 WO 2019244873 A1 WO2019244873 A1 WO 2019244873A1 JP 2019024044 W JP2019024044 W JP 2019024044W WO 2019244873 A1 WO2019244873 A1 WO 2019244873A1
Authority
WO
WIPO (PCT)
Prior art keywords
terminal
terminal connection
power supply
noise reduction
connection portion
Prior art date
Application number
PCT/JP2019/024044
Other languages
French (fr)
Japanese (ja)
Inventor
康介 山浦
祥祈 松下
和人 木藤
Original Assignee
株式会社デンソー
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2018218277A external-priority patent/JP2020005487A/en
Application filed by 株式会社デンソー filed Critical 株式会社デンソー
Priority to CN201980039665.4A priority Critical patent/CN112368916A/en
Priority to DE112019003112.0T priority patent/DE112019003112T5/en
Priority to US17/050,589 priority patent/US11228230B2/en
Publication of WO2019244873A1 publication Critical patent/WO2019244873A1/en

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/02—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for suppression of electromagnetic interference
    • H02K11/026—Suppressors associated with brushes, brush holders or their supports
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/30—Structural association with control circuits or drive circuits
    • H02K11/38—Control circuits or drive circuits associated with geared commutator motors of the worm-and-wheel type
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K13/00—Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windings; Disposition of current collectors in motors or generators; Arrangements for improving commutation
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K23/00—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/14—Means for supporting or protecting brushes or brush holders
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes

Definitions

  • the present disclosure relates to a motor.
  • a motor according to one embodiment of the present disclosure includes a yoke housing (12), a brush holder (21), a housing case (41), and a circuit board (72).
  • the yoke housing has a bottomed cylindrical shape in which a rotor (11) is accommodated inside.
  • the brush holder holds a power supply brush (22) for supplying power to the rotor and power supply terminals (23, 24) electrically connected to the power supply brush, and is fitted into an opening of the yoke housing.
  • the housing case has a substrate housing recess (46) into which the tip of the power supply terminal is inserted, and houses a speed reduction mechanism (31) for reducing the rotation of the rotor, and is connected to the opening of the yoke housing.
  • the circuit board has terminals (73, 74) that are electrically connected to the power supply terminals inside the board housing recess, and is housed in the board housing recess.
  • the power supply terminal has terminal connection portions (23a, 24a) that extend linearly and are arranged in the substrate receiving recess.
  • the terminal is a forked terminal that is electrically connected to the terminal connecting portion from a direction that intersects a direction in which the terminal connecting portion extends. A portion of the terminal connection portion closer to the base end than the terminal connection position (23b, 24b) to which the terminal is connected is covered with a noise reduction member (81, 82) for reducing noise.
  • the terminal connection portion is covered with the noise reduction member on the base end side of the terminal connection position where the terminal of the circuit board is connected. Therefore, the overall mounting space can be reduced in size as compared with the case where the noise reduction member is provided outside the motor. Further, it is possible to suppress the noise generated on the power supply brush side from propagating to the circuit board.
  • FIG. 1 is a front view of a motor according to an embodiment.
  • FIG. 2 is an exemplary front view of the motor according to the embodiment in a partially disassembled state;
  • FIG. 3 is an enlarged view of a housing case in the motor according to the embodiment.
  • FIG. 4 is an enlarged view of a housing case and a power supply terminal in the motor according to the embodiment.
  • FIG. 5 is a side view of the motor according to the embodiment in a partially disassembled state.
  • FIG. 6 is a partial cross-sectional view of a power supply terminal and a noise reduction member according to one embodiment.
  • FIG. 7 is an enlarged view of a housing case in another example of the motor.
  • FIG. 8 is an enlarged view of a housing case and a power supply terminal in another example of the motor.
  • FIG. 9 is an enlarged view of a housing case and a power supply terminal in another example of the motor.
  • FIG. 10 is a partial cross-sectional view for explaining another example of a power supply terminal and a circuit component.
  • FIG. 11 is a partial cross-sectional view illustrating another example of a power supply terminal and a circuit component.
  • FIG. 12 is a side view of another example of a circuit component.
  • FIG. 13 is a partial cross-sectional view illustrating another example of a power supply terminal and a circuit component.
  • the motor 10 has a bottomed cylindrical yoke housing 12 (hereinafter, referred to as a yoke 12) in which a rotor 11 is housed.
  • the yoke 12 has a flange portion 12 a extending radially outward from an opening of the yoke 12.
  • the magnet 13 is fixed to the inner peripheral surface of the yoke 12, and the rotor 11 is rotatably arranged inside the magnet 13.
  • the rotor 11 has a rotation shaft 14 arranged at the center of the yoke 12.
  • the base end of the rotating shaft 14 is supported by a bearing 15 provided at the center of the bottom of the yoke 12.
  • An armature core 16 radially opposed to the magnet 13 is fixed to the rotating shaft 14 so as to be integrally rotatable, and an armature coil 17 is wound around the armature core 16.
  • a commutator 18 to which an armature coil 17 is electrically connected is fixed to a portion of the rotating shaft 14 closer to the distal end side than the armature core 16 so as to be integrally rotatable with the rotating shaft 14.
  • the tip of the rotating shaft 14 protrudes from the opening of the yoke 12 to the outside of the yoke 12 (toward a housing case 41 described later).
  • a brush holder 21 is fitted into the opening of the yoke 12.
  • the brush holder 21 of the present embodiment is formed of an insulating resin material.
  • the rotating shaft 14 has a portion closer to the tip side than the commutator 18 penetrates the brush holder 21 and is supported by a bearing (not shown) held by the brush holder 21.
  • the brush holder 21 holds a plurality of power supply brushes 22 that are in sliding contact with the commutator 18.
  • the brush holder 21 holds a pair of power supply terminals 23 and 24.
  • the power supply terminals 23 and 24 are insert-molded in a resin brush holder 21.
  • Each of the power supply terminals 23 and 24 is formed by pressing a conductive metal plate material, and is embedded in the brush holder 21 so as to be partially exposed to the outside of the brush holder 21.
  • the tip of each of the power supply terminals 23 and 24 is exposed to the outside of the brush holder 21 at a position radially displaced from the rotary shaft 14 (a position shifted downward from the rotational axis L1 of the rotary shaft 14 in FIG. 2). ing.
  • a portion exposed to the outside of the brush holder 21 on the tip end side of each of the power supply terminals 23 and 24 is linearly formed on a side opposite to the yoke 12 in parallel with a rotation axis L1 of the rotation shaft 14 (hereinafter, referred to as a rotation axis L1). Extends.
  • this portion extending parallel to the rotation axis L1 is a terminal connection portion 23a or 24a.
  • a power supply brush 22 is electrically connected to a portion of each of the power supply terminals 23 and 24 closer to the base end than the terminal connection portions 23a and 24a and exposed from the brush holder 21.
  • the motor 10 includes a resin housing case 41 that houses the speed reduction mechanism 31 that reduces the rotation of the rotor 11 and is connected to the yoke 12.
  • the housing case 41 includes a fixing portion 42 for fixing the housing case 41 and the yoke 12 at a position (an end on the right side in FIG. 2) facing the yoke 12 in the direction of the rotation axis L1.
  • the fixing portion 42 has a shape overlapping the flange portion 12a of the yoke 12 and the brush holder 21 in the direction of the rotation axis L1.
  • the fixing portion 42 is provided with a concave portion (not shown) for accommodating a portion of the brush holder 21 projecting from the yoke 12.
  • the housing case 41 is connected to the yoke 12 by fixing the flange portion 12 a of the yoke 12 to the fixing portion 42 with the screw 43 while the brush holder 21 is held between the fixing portion 42 and the yoke 12. ing.
  • the housing case 41 has a worm housing portion 44 extending from the fixed portion 42 to the side opposite to the yoke 12 in the direction of the rotation axis L1.
  • the worm housing portion 44 houses the worm 32 in the form of a screw tooth that rotates integrally with the rotating shaft 14.
  • the housing case 41 has a worm wheel housing 45 provided integrally with the worm housing 44 on the side (upper side in FIG. 2) of the worm housing 44.
  • a worm wheel 33 having a substantially disk shape is rotatably housed in the worm wheel housing 45.
  • the speed reduction mechanism 31 is a worm speed reduction mechanism including the worm wheel 33 and the worm 32.
  • An output shaft 34 extending in the axial direction of the worm wheel 33 is provided at a radially central portion of the worm wheel 33 so as to be integrally rotatable with the worm wheel 33. The output is output from the output shaft 34.
  • the housing case 41 has a substrate accommodating concave portion 46 at a position adjacent to the fixing portion 42 in the direction of the rotation axis L1.
  • the substrate accommodating concave portion 46 is a concave portion provided in a direction perpendicular to the rotation axis L1 and parallel to the rotation axis of the output shaft 34 (perpendicular direction in FIG. 2).
  • the substrate accommodating concave portion 46 of the present embodiment has a rectangular shape that is long in the direction of the rotational axis L1 when viewed from the opening 46a of the substrate accommodating concave portion 46 in a direction orthogonal to the rotation axis L1. ing.
  • the substrate housing recess 46 has a terminal insertion portion 48 provided by partitioning a portion adjacent to the fixing portion 42 in the substrate housing recess 46 by a partition wall 47.
  • the partition wall 47 is provided in the substrate accommodating concave portion 46 at a position separated from the fixed portion 42 in the direction of the rotation axis L1 and protrudes from the bottom surface 46b of the substrate accommodating concave portion 46 toward the opening 46a of the substrate accommodating concave portion 46. ing.
  • the partition wall 47 When viewed from the opening 46a of the substrate housing recess 46 (see FIG. 2), the partition wall 47 extends from the worm housing 44 to the side wall 46c of the substrate housing recess 46 along a direction orthogonal to the direction of the rotation axis L1.
  • the side wall portion 46c is a peripheral wall that stands upright along the outer periphery of the substrate housing concave portion 46.
  • the housing case 41 has a pair of terminal insertion ports 51, 52 that penetrate the fixing part 42 in the direction of the rotation axis L ⁇ b> 1 and open inside the terminal insertion part 48.
  • the terminal insertion ports 51 and 52 communicate the terminal insertion portion 48 with the concave portion (not shown) for accommodating the brush holder 21 provided in the fixing portion 42.
  • the terminal insertion openings 51 and 52 are separated from each other in the direction perpendicular to the direction of the rotation axis L1 at the same interval as the interval between the terminal connecting portions 23a and 24a when viewed from the recessed direction of the substrate accommodating recess 46 (that is, the state shown in FIG. 2). are doing.
  • the power supply terminals 23 and 24 are inserted into terminal insertion ports 48 from terminal ends of the power supply terminals 23 and 24, and are inserted into the terminal insertion portions 48.
  • 24a are arranged inside the terminal insertion portion 48 (inside the substrate accommodating recess 46).
  • the terminal connection portions 23a and 24a arranged in the terminal insertion portion 48 extend in parallel with the rotation axis L1 and are parallel to each other.
  • the terminal connecting portions 23a and 24a are separated from each other in a direction perpendicular to the direction of the rotation axis L1 when viewed from the direction in which the substrate accommodating recess 46 is provided. Further, the ends of the terminal connection portions 23 a and 24 a (the ends of the power supply terminals 23 and 24) reach the partition wall 47.
  • a control device 71 for controlling driving of the motor 10 is housed in the substrate housing recess 46.
  • the control device 71 has a circuit board 72 on which a plurality of electronic components are mounted.
  • the circuit board 72 has a rectangular flat plate shape that is slightly smaller than the opening 46 a of the board housing recess 46.
  • the circuit board 72 is housed in the board housing recess 46 so as to substantially close the opening 46a of the board housing recess 46.
  • the circuit board 72 is parallel to the direction of the rotation axis L1 (so that the direction perpendicular to the direction of the rotation axis L1 is the thickness direction of the circuit board 72), and the rotation axis of the output shaft 34 and the circuit board 72.
  • the circuit board 72 is accommodated in the board accommodating recess 46 such that the direction in which the board accommodating recess 46 is provided coincides with the thickness direction of the circuit board 72.
  • the circuit board 72 includes a pair of terminals 73 and 74 that are electrically connected to the power supply terminals 23 and 24.
  • the terminals 73 and 74 are erected on a portion of the circuit board 72 that overlaps with the terminal insertion portion 48.
  • Each of the terminals 73 and 74 is a bifurcated terminal erected at a right angle with respect to the circuit board 72, and has a pair of clamping pieces 75 branched in a bifurcated shape at the distal end.
  • the terminals 73 and 74 are provided so as to be separated from each other in the direction (vertical direction in FIG. 5) orthogonal to the direction of the rotation axis L1 by the same distance as the distance between the terminal connection portions 23a and 24a. I have.
  • these terminals 73 and 74 are electrically connected to the terminal connection portions 23a and 24a from a direction intersecting the direction in which the terminal connection portions 23a and 24a extend. More specifically, the one terminal 73 is connected to the terminal connecting portion 23a from a direction perpendicular to the direction of the rotation axis L1 so that the terminal connecting portion 23a of the one power supply terminal 23 is inserted between the pair of holding pieces 75. The terminal connection portion 23a is disposed between the pair of holding pieces 75. As a result, the terminal 73 is connected to the terminal connection portion 23a in a direction orthogonal to the direction of the rotation axis L1 and in a direction in which the circuit board 72 is attached to the housing case 41.
  • the other terminal 74 is arranged from the direction orthogonal to the rotation axis L1 direction with respect to the terminal connection portion 24a so that the terminal connection portion 24a of the other power supply terminal 24 is inserted between the pair of holding pieces 75.
  • the terminal connecting portion 24a is held between the pair of holding pieces 75.
  • the terminal 74 is connected to the terminal connection portion 24a in a direction orthogonal to the direction of the rotation axis L1 and in a direction in which the circuit board 72 is attached to the housing case 41.
  • the position where the terminal 73 is connected in the terminal connection part 23a is the terminal connection position 23b
  • the position where the terminal 74 is connected in the terminal connection part 24a is the terminal connection position 24b.
  • the terminal connection position 23b in the terminal connection portion 23a and the terminal connection position 24b in the terminal connection portion 24a are on a straight line orthogonal to the direction of the rotation axis L1 when viewed from the recessed direction of the substrate housing concave portion 46 ( 4 (located on a straight line L2 shown by a dashed line).
  • the circuit board 72 is provided with a connector portion (not shown) to which an external connector (not shown) electrically connected to an external power supply device is connected.
  • This connector portion is exposed to the outside of the housing case 41 from a cutout portion 53 provided in a side wall portion 46c of the board accommodating concave portion 46.
  • the connector section is electrically connected to the terminals 73 and 74 on the circuit board 72.
  • the terminal insertion portion 48 has a direction in which the terminal connecting portions 23 a and 24 a protrude from the bottom surface 46 b of the board housing recess 46 toward the opening 46 a of the board housing recess 46 and extend (this embodiment).
  • projecting walls 54a, 54b, and 54c are provided in a direction orthogonal to the rotation axis L1).
  • the protruding walls 54a, 54b, 54c are located closer to the base end of the power supply terminals 23, 24 (the right side in FIG. 4) than the distal ends of the terminal connection positions 23b, 24b.
  • the protruding wall 54a is located between the worm housing part 44 and the terminal connecting part 23a, and the protruding wall 54b is located between the terminal connecting part 23a and the terminal connecting part 24a.
  • the projecting wall 54c is located between the terminal connecting portion 24a and the side wall portion 46c.
  • the partition wall 47 is provided with separation grooves 47a and 47b recessed from the distal end to the base end of the partition wall 47 at two locations separated in a direction orthogonal to the direction of the rotation axis L1.
  • the partition wall 47 is divided into three portions, namely, the divided walls 55a, 55b and 55c.
  • the tip of one power supply terminal 23 is arranged in one separation groove 47a, and the tip of the other power supply terminal 24 is arranged in the other separation groove 47b. Therefore, the divided walls 55a, 55b, and 55c are aligned with the terminal connection portions 23a and 24a in a direction (vertical direction in FIG. 4) orthogonal to the direction in which the terminal connection portions 23a and 24a extend.
  • the dividing wall 55a is located between the worm accommodating portion 44 and the terminal connecting portion 23a, and the dividing wall 55b is located between the terminal connecting portion 23a and the terminal connecting portion 24a,
  • the division wall 55c is located between the terminal connection part 24a and the side wall part 46c. Accordingly, when viewed from the opening 46a of the substrate accommodating recess 46 (as viewed from the direction in which the substrate accommodating recess 46 is provided), the protruding walls 54a, 54b are orthogonal to the terminal connecting portion 23a and the direction in which the terminal connecting portion 23a extends. It is provided on both sides of the direction.
  • the dividing walls 55a and 55b are provided on both sides of the terminal connecting portion 23a in a direction orthogonal to the direction in which the terminal connecting portion 23a extends.
  • the protruding walls 54a, 54b and the dividing walls 55a, 55b are located on both sides in the direction in which the terminal connection portion 23a extends with respect to the terminal connection position 23b of the terminal connection portion 23a.
  • the protruding walls 54b and 54c are provided on both sides of the terminal connecting portion 24a in a direction orthogonal to the direction in which the terminal connecting portion 24a extends.
  • the dividing walls 55b and 55c are provided on both sides of the terminal connecting portion 24a in a direction orthogonal to the direction in which the terminal connecting portion 24a extends.
  • the protruding walls 54b and 54c and the dividing walls 55b and 55c are located on both sides in the direction in which the terminal connection portion 24a extends with respect to the terminal connection position 24b of the terminal connection portion 24a.
  • the tips of the protruding walls 54a, 54b, 54c and the partition walls 47 are closer to the substrate than the terminal connection portions 23a, 24a. It is located closer to the opening 46a of the housing recess 46 (on the near side in FIG. 4).
  • the housing case 41 has a pair of restricting portions 63 inside the substrate accommodating recess 46.
  • the pair of restricting portions 63 restrict the position of the portion of the terminal connecting portion 23a closer to the distal end than the terminal connecting position 23b in the direction (vertical direction in FIG. 4) orthogonal to the direction in which the terminal connecting portion 23a extends.
  • the pair of regulating portions 63 are provided in the separation groove 47a, and are provided between the dividing wall 55a and the terminal connecting portion 23a and between the dividing wall 55b and the terminal connecting portion 23a, respectively.
  • the pair of restricting portions 63 are integrally provided on the side surfaces of the divided walls 55a and 55b near the terminal connecting portion 23a.
  • Each of the restricting portions 63 faces a portion of the terminal connecting portion 23a closer to the tip end than the terminal connecting position 23b in a direction (vertical direction in FIG. 4) orthogonal to the direction in which the terminal connecting portion 23a extends.
  • the side surface of each of the restricting portions 63 facing the terminal connecting portion 23a is a restricting surface 63a having a certain distance from the terminal connecting portion 23a.
  • the restricting surface 63a of the restricting portion 63 and the restricting surface 63a of the other restricting portion 63 have a planar shape parallel to the direction of the rotation axis L1 and are parallel to each other.
  • the distance D1 between the restriction portions 63 on both sides of the terminal connection portion 23a (that is, the distance between the restriction surfaces 63a) has a constant value along the direction in which the terminal connection portion 24a extends (see FIG. 3).
  • the distance D1 is a distance slightly longer than the thickness T1 of the terminal connection portion 23a.
  • the distance D1 is set according to the size and shape of the pair of holding pieces 75 of the terminal 73 connected to the terminal connection portion 23a. That is, if the distal end portion of the terminal connecting portion 23a is disposed between the pair of regulating surfaces 63a, the distance D1 is set such that the terminal connecting portion 23a has a Is set so as to be inserted between the holding pieces 75.
  • the restricting portion 63 is an end of the restricting portion 63 on the opposite side to the tip of the power supply terminal 23 (the end near the terminal insertion port 51 and the right end in FIG. 4).
  • the introduction portion 63b extends from the first end (the end opposite to the distal end of the power supply terminal 23) of the regulating portion 63 along the direction in which the terminal connection portion 23a extends to the distal end side of the power supply terminal 23. (The distance between the introduction portion 63b and the terminal connection portion 23a in the direction orthogonal to the direction in which the terminal connection portion 23a extends) is a portion formed so as to gradually become shorter.
  • a portion adjacent to the terminal connecting portion 23a is formed in an arc shape at an end of the regulating portion 63 opposite to the tip of the power supply terminal 23, and this arc-shaped portion serves as the introduction portion 63b. ing.
  • the introduction portion 63b provided in the regulation portion 63, the ends of the regulation portions 63 on both sides of the terminal connection portion 23a, which are opposite to the tip of the power supply terminal 23, are located between each other as they approach the tip side of the power supply terminal 23.
  • the width of the space is gradually narrowing.
  • the housing case 41 has a pair of regulating portions 64 inside the substrate accommodating recess 46.
  • the pair of restricting portions 64 restrict the position of a portion of the terminal connecting portion 24a closer to the distal end than the terminal connecting position 24b in a direction (vertical direction in FIG. 4) orthogonal to the direction in which the terminal connecting portion 24a extends.
  • the pair of regulating portions 64 are provided in the separation groove 47b, and are provided between the dividing wall 55b and the terminal connecting portion 24a and between the dividing wall 55c and the terminal connecting portion 24a.
  • the pair of restricting portions 64 are integrally provided on the side surfaces of the divided walls 55b and 55c near the terminal connecting portion 24a.
  • Each of the restricting portions 64 faces a portion of the terminal connecting portion 24a closer to the distal end than the terminal connecting position 24b in a direction perpendicular to the extending direction of the terminal connecting portion 24a (vertical direction in FIG. 4).
  • the regulating portions 64 provided on both sides of the terminal connecting portion 24a have the same configuration as the regulating portions 63 provided on both sides of the terminal connecting portion 23a.
  • the side surface of each of the restricting portions 64 facing the terminal connecting portion 24a is a restricting surface 64a having a certain distance from the terminal connecting portion 24a.
  • the distance D2 between the restriction portions 64 on both sides of the terminal connection portion 24a (that is, the distance between the restriction surfaces 64a) has a constant value along the direction in which the terminal connection portion 24a extends.
  • the distance D2 is a distance slightly longer than the thickness T2 of the terminal connection portion 24a.
  • the distance D2 is set according to the size and shape of the pair of holding pieces 75 of the terminal 74 connected to the terminal connection portion 24a. That is, if the distal end portion of the terminal connection portion 24a is arranged between the pair of regulating surfaces 64a, the distance D2 is set such that the terminal connection portion 24a is positioned in a pair by the R shape of the distal end of the holding piece 75 when the control device 71 is assembled. Is set so as to be inserted between the holding pieces 75.
  • the restricting portion 64 is provided at the end of the restricting portion 64 opposite to the tip of the power supply terminal 24 (the end near the terminal insertion port 52 and the right end in FIG. 4) similar to the introduction portion 63b. It has an introduction portion 64b that forms a configuration.
  • the introduction portion 64b extends from the first end (the end opposite to the tip of the power supply terminal 24) of the regulating portion 64 along the direction in which the terminal connection portion 24a extends toward the tip end of the power supply terminal 24. (The distance between the introduction portion 64b and the terminal connection portion 24a in the direction orthogonal to the direction in which the terminal connection portion 24a extends) is formed in an arc shape so as to gradually become shorter.
  • the terminal connecting portions 23a and 24a have a noise reduction member 81 on the base end side of the terminal connection positions 23b and 24b to which the terminals 73 are connected for absorbing and reducing noise. Covered.
  • the noise reduction member 81 covers the terminal connection portions 23a and 24a while allowing the terminal connection portions 23a and 24a to bend.
  • the noise reduction member 81 of this embodiment is a rubber member having elasticity in which a ferrite powder as a noise absorbing material and a rubber material are mixed, and is provided in close contact with the terminal connection portions 23a and 24a without any gap. ing.
  • the noise reduction member 81 is shaped to be able to pass through the terminal insertion ports 51 and 52. That is, the noise reduction member 81 is formed so as to be included in the outer shape of the terminal insertion ports 51 and 52 when viewed from the direction in which the terminal connection portions 23a and 24a extend.
  • the brush holder 21 is inserted into the terminal insertion ports 51, 52 while extending in the same direction as the terminal connection portions 23a, 24a and holding the base end sides of the terminal connection portions 23a, 24a. Holding portion 21a.
  • the noise reduction member 81 has a width D3 in a direction perpendicular to the rotation axis L1 that is the same as the width D4 of the holding portion 21a when viewed from the recessed direction of the substrate housing recess 46 (see FIG. 4).
  • the width is set slightly smaller than the width D5 of the mouths 51 and 52.
  • the width D3 of the noise reduction member 81 is set smaller than the width D6 between the adjacent protruding walls 54a to 54c.
  • the current supplied from the external connector connected to the control device 71 passes through the terminals 73 and 74, the power supply terminals 23 and 24, and the power supply brush 22. And supplied to the rotor 11. Then, the rotor 11 rotates. The rotation of the rotor 11 is reduced by the worm 32 that rotates integrally with the rotating shaft 14 and the worm wheel 33 that meshes with the worm 32, and is output from the output shaft 34.
  • the terminal connection portions 23a and 24a of the power supply terminals 23 and 24 and the noise reduction member 81 are arranged inside the terminal insertion portion 48 of the board housing recess 46.
  • the distal ends of the power supply terminals 23 and 24 are arranged in the restriction portions 63 and 64.
  • the power supply terminals 23 and 24 are arranged at positions where the terminal connection portions 23a and 24a can be connected to the terminals 73 and 74, and further, the positions of the parts closer to the distal end than the terminal connection positions 23b and 24b are regulated.
  • the state is controlled by the parts 63 and 64. In this state, the circuit board 72 is accommodated in the substrate accommodating recess 46 from a direction perpendicular to the direction of the rotation axis L1 (the same direction as the recessed direction of the substrate accommodating recess 46).
  • the terminals 73 and 74 are placed in a direction perpendicular to the direction of the rotation axis L1. It is inserted into the terminal insertion part 48.
  • the terminal 73 sandwiches the terminal connection portion 23a and the terminal 74 sandwiches the terminal connection portion 24a, so that the terminal 73 and the power supply terminal 23 are electrically connected. Are electrically connected.
  • the terminal connection portions 23a and 24a are covered by the noise reduction member 81 at positions closer to the base end than the terminal connection positions 23b and 24b where the terminals 73 and 74 of the circuit board 72 are connected. Therefore, it is possible to suppress the noise generated by the power supply brush 22 from propagating to the circuit board 72 and an external power supply device.
  • the overall mounting space can be reduced in size as compared with the case where the noise reduction member is provided outside the motor 10.
  • the noise reduction member 81 covers the terminal connection portions 23a and 24a while allowing the terminal connection portions 23a and 24a to bend. Therefore, when connecting the terminals 73 and 74 to the terminal connection portions 23a and 24a, the terminal connection portions 23a and 24a can be bent, and for example, the connection can be easily performed without increasing the dimensional accuracy. That is, if the noise reduction member is provided so as not to allow the terminal connection portions 23a and 24a to bend, the terminals 73 and 74 can be easily connected to the terminal connection portions 23a and 24a unless the dimensional accuracy is made high. However, this can be avoided.
  • the noise reduction member 81 has elasticity and is provided in close contact with the terminal connection portions 23a and 24a. Therefore, bending of the terminal connection portions 23a and 24a is allowed.
  • the noise reducing member 81 is a rubber member in which ferrite powder as a noise absorbing material and a rubber material are mixed. Therefore, the terminal connection portions 23a and 24a are easily bent.
  • the housing case 41 has terminal insertion ports 51 and 52 through which the terminal connection portions 23a and 24a are inserted in the same direction as the direction in which the terminal connection portions 23a and 24a extend. It has a shape that can pass through the terminal insertion ports 51 and 52. Therefore, the brush holder 21 and the housing case 41 can be assembled with the noise reduction member 81 fixed to the terminal connection portions 23a and 24a. Therefore, they can be easily assembled.
  • the noise reduction member 81 is elastic and provided in close contact with the terminal connection portions 23a and 24a.
  • the present invention is not limited to this.
  • And may be provided with a gap from the terminal connection portions 23a and 24a.
  • the noise reduction member 82 is fixed in advance in the substrate accommodating recess 46 before the terminal connection portions 23a and 24a are inserted.
  • the noise reduction member 82 has a cylindrical shape having a central hole into which the terminal connection portions 23a and 24a can be loosely fitted, and is fixed between adjacent protruding walls 54a to 54c.
  • the noise reduction member 82 has a gap S between the terminal connection portions 23a and 24a when the terminal connection portions 23a and 24a are inserted and arranged. With this configuration, for example, even if the noise reduction member 82 is a hard member that does not include a rubber material or the like, the terminal connection portions 23a and 24a are allowed to bend.
  • the noise reduction member 81 covers the terminal connection portions 23a and 24a while allowing the terminal connection portions 23a and 24a to bend.
  • the present invention is not limited to this. Is a hard member not containing a rubber material or the like, and may be provided in close contact with the terminal connection portions 23a and 24a.
  • the noise reduction member 81 is a rubber member in which a ferrite powder as a noise absorbing material and a rubber material are mixed, but may be a member having elasticity other than rubber.
  • the noise reduction member may be an elastic resin member in which ferrite powder as a noise absorbing material and a soft resin material are mixed.
  • the noise reduction member 81 absorbs noise.
  • any other noise reduction member may be used as long as it can reduce the propagation of noise to the outside.
  • the noise reduction member may be a circuit component member 91 provided between the terminal connection portions 23a and 24a arranged in parallel to increase mutual inductance and capacitance. .
  • the circuit component 91 of this example is made of a bent metal plate.
  • the circuit component 91 When viewed from the direction in which the terminal connecting portions 23a and 24a extend (see FIG. 10), the circuit component 91 is formed into a substantially U-shape, and the press-fitting portion 91a into which the terminal connecting portions 23a and 24a are press-fitted is formed. It has an extending portion 91b which is bent from one end of the press-fitting portion 91a and extends laterally and in a direction approaching each other, and an opposing portion 91c which is bent from the extending portion 91b and faces each other.
  • the mutual inductance and the capacitance can be increased in the circuit component member 91 to reduce the common mode noise.
  • the circuit component 91 since the circuit component 91 is made of a bent metal plate, it can be easily obtained by press working. Further, the circuit component 91 has a configuration in which the terminal connection portions 23a and 24a have press-fit portions 91a into which the terminal connection portions 23a and 24a can be press-fitted. be able to. In this configuration, for example, by preparing a plurality of types of circuit components 91, the facing area and facing distance of the facing portion 91c in the circuit components 91 can be easily changed, thereby reducing the mutual inductance and capacitance. It can be easily changed, and common mode noise can be easily and suitably reduced.
  • the press-fitting portion 91a of the circuit component member 91 has a configuration in which the interval between the pair of parallel walls is set to an interval at which the terminal connecting portions 23a and 24a can be press-fitted. If the press-fitting is possible, the press-fitting portion may have another configuration.
  • the press-fit portion 91a is formed in a substantially U-shape when viewed from the direction in which the terminal connecting portions 23a and 24a extend (see FIG. 10), and the pair of parallel press-fit portions 91a are formed in parallel.
  • At least one of the walls may have a pressing portion 91d protruding inward.
  • the pressing portion 91d functions so as to press the terminal connecting portions 23a and 24a, so that the terminal connecting portions 23a and 24a can be press-fitted into the press-fitting portion 91a.
  • the pressing portion 91d is cut and raised from one of the parallel walls and protrudes inward.
  • another configuration may be used as long as the pressing portion 91d functions similarly.
  • the pressing portion 91d is configured to be provided in a pair, but the number may be one or three or more.
  • the circuit component member 91 may be fixed to the terminal connection portions 23a and 24a by a configuration other than the press-fitting portion 91a, for example, by caulking, welding, or screwing.
  • the circuit component member 91 is made of a bent metal plate material, but is not limited to this, and may have another configuration such as a block-shaped member.
  • the noise reduction member 81 has a shape that can pass through the terminal insertion ports 51 and 52, but is not limited thereto, and may have a shape that cannot pass through the terminal insertion ports 51 and 52. . In this case, it is necessary to assemble the terminal connecting portions 23a and 24a so that the terminal connecting portions 23a and 24a also pass through the noise reduction member 81 while passing through the terminal insertion openings 51 and 52.

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Abstract

This motor comprises a yoke housing (12), a brush holder (21), a housing case (41) and a circuit board (72). The brush holder holds a power supply brush (22) and power supply terminals (23, 24). The housing case has a board containing recess (46) into which front end portions of the power supply terminals are inserted. The circuit board has terminals (73, 74) which are electrically connected to the power supply terminals within the board containing recess. The power supply terminals have terminal connection parts (23a, 24a) which linearly extend and are arranged in the board containing recess. The terminals are fork terminals which are electrically connected to the terminal connection parts. With respect to the terminal connection parts, portions closer to the base ends than terminal connected positions (23b, 24b), where the terminals are connected, are covered by noise reduction member (81, 82) for reducing noise.

Description

モータmotor 関連出願の相互参照Cross-reference of related applications
　本出願は、２０１８年６月２０日に出願された日本出願番号２０１８－１１７１９１号及び２０１８年１１月２１日に出願された日本出願番号２０１８－２１８２７７号に基づくもので、ここにその記載内容を援用する。 This application is based on Japanese Patent Application No. 2018-117191 filed on June 20, 2018 and Japanese Application No. 2018-218277 filed on November 21, 2018, and the contents thereof are described herein. Invite.
　本開示は、モータに関するものである。 The present disclosure relates to a motor.
　従来からモータは、給電ブラシが整流子に摺接することなどによりノイズを発生する。そして、このようなモータにおけるノイズ対策として、モータと接続される給電用の外部ケーブルに該外部ケーブルを覆うノイズ低減部材としてのフェライトコアを設ける技術がある（例えば、特許文献１参照）。 Conventional motors generate noise when the power supply brush slides against the commutator. As a countermeasure against noise in such a motor, there is a technique in which a ferrite core as a noise reduction member that covers the external cable for power supply connected to the motor is provided (for example, see Patent Document 1).
特開２００７－５７５１号公報JP 2007-5751 A
　しかしながら、上記したような構成では、モータの外部にフェライトコア及び該フェライトコアを固定するためのフェライトコアホルダが設けられ、それらを含めた装置の搭載スペースが大きくなってしまうという問題があった。 However, in the above-described configuration, there is a problem that a ferrite core and a ferrite core holder for fixing the ferrite core are provided outside the motor, and a mounting space of the device including the ferrite core is increased.
　本開示の目的は、搭載スペースの小型化を可能としたモータを提供することにある。
　上記目的を達成するため、本開示に一態様にかかるモータは、ヨークハウジング（１２）と、ブラシホルダ（２１）と、ハウジングケース（４１）と、回路基板（７２）とを含む。前記ヨークハウジングは、内側に回転子（１１）を収容した有底筒状である。前記ブラシホルダは、前記回転子に給電するための給電ブラシ（２２）及び前記給電ブラシに電気的に接続された給電ターミナル（２３，２４）を保持し前記ヨークハウジングの開口部に嵌入される。前記ハウジングケースは、前記給電ターミナルの先端部が挿入された基板収容凹部（４６）を有するとともに、前記回転子の回転を減速する減速機構（３１）を収容し前記ヨークハウジングの開口部に連結される。前記回路基板は、前記基板収容凹部の内部で前記給電ターミナルに電気的に接続される端子（７３，７４）を有し前記基板収容凹部に収容される。前記給電ターミナルは、直線的に延び前記基板収容凹部に配置される端子接続部（２３ａ，２４ａ）を有する。前記端子は、前記端子接続部の延びる方向に対して交差する方向から前記端子接続部に電気的に接続された二股端子である。前記端子接続部において前記端子が接続される端子接続位置（２３ｂ，２４ｂ）よりも基端側の部位は、ノイズを低減するためのノイズ低減部材（８１，８２）に覆われる。 An object of the present disclosure is to provide a motor capable of reducing a mounting space.
To achieve the above object, a motor according to one embodiment of the present disclosure includes a yoke housing (12), a brush holder (21), a housing case (41), and a circuit board (72). The yoke housing has a bottomed cylindrical shape in which a rotor (11) is accommodated inside. The brush holder holds a power supply brush (22) for supplying power to the rotor and power supply terminals (23, 24) electrically connected to the power supply brush, and is fitted into an opening of the yoke housing. The housing case has a substrate housing recess (46) into which the tip of the power supply terminal is inserted, and houses a speed reduction mechanism (31) for reducing the rotation of the rotor, and is connected to the opening of the yoke housing. You. The circuit board has terminals (73, 74) that are electrically connected to the power supply terminals inside the board housing recess, and is housed in the board housing recess. The power supply terminal has terminal connection portions (23a, 24a) that extend linearly and are arranged in the substrate receiving recess. The terminal is a forked terminal that is electrically connected to the terminal connecting portion from a direction that intersects a direction in which the terminal connecting portion extends. A portion of the terminal connection portion closer to the base end than the terminal connection position (23b, 24b) to which the terminal is connected is covered with a noise reduction member (81, 82) for reducing noise.
　同構成によれば、端子接続部は、回路基板の端子が接続される端子接続位置よりも基端側がノイズ低減部材に覆われる。そのため、モータの外部にノイズ低減部材が設けられるものに比べて全体的な搭載スペースの小型化を図ることができる。また、給電ブラシ側で発生したノイズが回路基板に伝搬してしまうことを抑えることができる。 According to the configuration, the terminal connection portion is covered with the noise reduction member on the base end side of the terminal connection position where the terminal of the circuit board is connected. Therefore, the overall mounting space can be reduced in size as compared with the case where the noise reduction member is provided outside the motor. Further, it is possible to suppress the noise generated on the power supply brush side from propagating to the circuit board.
　本開示についての上記目的およびその他の目的、特徴や利点は、添付の図面を参酌しながら下記の詳細な記述により、より明確になる。その図面は、
図１は、一実施形態のモータの正面図。 図２は、一実施形態のモータを一部分解して図示した正面図。 図３は、一実施形態のモータにおけるハウジングケースの拡大図。 図４は、一実施形態のモータにおけるハウジングケース及び給電ターミナルの拡大図。 図５は、一実施形態のモータを一部分解して図示した側面図。 図６は、一実施形態の給電ターミナル及びノイズ低減部材の一部断面図。 図７は、別例のモータにおけるハウジングケースの拡大図。 図８は、別例のモータにおけるハウジングケース及び給電ターミナルの拡大図。 図９は、別例のモータにおけるハウジングケース及び給電ターミナルの拡大図。 図１０は、別例の給電ターミナル及び回路構成部材を説明するための一部断面図。 図１１は、別例の給電ターミナル及び回路構成部材を説明するための一部断面図。 図１２は、別例の回路構成部材の側面図。 図１３は、別例の給電ターミナル及び回路構成部材を説明するための一部断面図。 The above object and other objects, features, and advantages of the present disclosure will become more apparent from the following detailed description with reference to the accompanying drawings. The drawing is
FIG. 1 is a front view of a motor according to an embodiment. FIG. 2 is an exemplary front view of the motor according to the embodiment in a partially disassembled state; FIG. 3 is an enlarged view of a housing case in the motor according to the embodiment. FIG. 4 is an enlarged view of a housing case and a power supply terminal in the motor according to the embodiment. FIG. 5 is a side view of the motor according to the embodiment in a partially disassembled state. FIG. 6 is a partial cross-sectional view of a power supply terminal and a noise reduction member according to one embodiment. FIG. 7 is an enlarged view of a housing case in another example of the motor. FIG. 8 is an enlarged view of a housing case and a power supply terminal in another example of the motor. FIG. 9 is an enlarged view of a housing case and a power supply terminal in another example of the motor. FIG. 10 is a partial cross-sectional view for explaining another example of a power supply terminal and a circuit component. FIG. 11 is a partial cross-sectional view illustrating another example of a power supply terminal and a circuit component. FIG. 12 is a side view of another example of a circuit component. FIG. 13 is a partial cross-sectional view illustrating another example of a power supply terminal and a circuit component.
　以下、モータの一実施形態について説明する。
　図１に示すように、モータ１０は、内側に回転子１１を収容した有底筒状のヨークハウジング１２（以下、ヨーク１２と言う）を有する。ヨーク１２は、同ヨーク１２の開口部から径方向外側に延びるフランジ部１２ａを有する。ヨーク１２の内周面には、マグネット１３が固着されるとともに、当該マグネット１３の内側に回転子１１が回転可能に配置されている。 Hereinafter, an embodiment of the motor will be described.
As shown in FIG. 1, the motor 10 has a bottomed cylindrical yoke housing 12 (hereinafter, referred to as a yoke 12) in which a rotor 11 is housed. The yoke 12 has a flange portion 12 a extending radially outward from an opening of the yoke 12. The magnet 13 is fixed to the inner peripheral surface of the yoke 12, and the rotor 11 is rotatably arranged inside the magnet 13.
　回転子１１は、ヨーク１２の中央に配置される回転軸１４を有する。回転軸１４の基端部は、ヨーク１２の底部中央に設けられた軸受１５によって軸支されている。また、回転軸１４には、マグネット１３と径方向に対向する電機子コア１６が一体回転可能に固定されるとともに、電機子コア１６には、電機子コイル１７が巻装されている。また、回転軸１４における電機子コア１６よりも先端側の部位には、電機子コイル１７が電気的に接続された整流子１８が回転軸１４と一体回転可能に固定されている。そして、回転軸１４の先端部は、ヨーク１２の開口部からヨーク１２の外部に（後述のハウジングケース４１に向かって）突出している。 The rotor 11 has a rotation shaft 14 arranged at the center of the yoke 12. The base end of the rotating shaft 14 is supported by a bearing 15 provided at the center of the bottom of the yoke 12. An armature core 16 radially opposed to the magnet 13 is fixed to the rotating shaft 14 so as to be integrally rotatable, and an armature coil 17 is wound around the armature core 16. A commutator 18 to which an armature coil 17 is electrically connected is fixed to a portion of the rotating shaft 14 closer to the distal end side than the armature core 16 so as to be integrally rotatable with the rotating shaft 14. The tip of the rotating shaft 14 protrudes from the opening of the yoke 12 to the outside of the yoke 12 (toward a housing case 41 described later).
　図１及び図２に示すように、ヨーク１２の開口部には、ブラシホルダ２１が嵌入されている。本実施形態のブラシホルダ２１は、絶縁性の樹脂材料にて形成されている。回転軸１４は、整流子１８よりも先端側の部位がブラシホルダ２１を貫通するとともに、同ブラシホルダ２１に保持された図示しない軸受によって軸支されている。そして、ブラシホルダ２１は、整流子１８に摺接する複数の給電ブラシ２２を保持している。 ブ ラ シ As shown in FIGS. 1 and 2, a brush holder 21 is fitted into the opening of the yoke 12. The brush holder 21 of the present embodiment is formed of an insulating resin material. The rotating shaft 14 has a portion closer to the tip side than the commutator 18 penetrates the brush holder 21 and is supported by a bearing (not shown) held by the brush holder 21. The brush holder 21 holds a plurality of power supply brushes 22 that are in sliding contact with the commutator 18.
　また、ブラシホルダ２１は、一対の給電ターミナル２３，２４を保持している。本実施形態では、給電ターミナル２３，２４は、樹脂製のブラシホルダ２１にインサート成形されている。各給電ターミナル２３，２４は、導電性の金属板材にプレス加工を施して形成されており、部分的にブラシホルダ２１の外部に露出するように同ブラシホルダ２１に埋設されている。各給電ターミナル２３，２４の先端部は、回転軸１４から径方向にずれた位置（図２においては回転軸１４の回転軸線Ｌ１から下側にずれた位置）でブラシホルダ２１の外部に露出している。そして、各給電ターミナル２３，２４の先端側のブラシホルダ２１の外部に露出した部分は、回転軸１４の回転軸線Ｌ１（以下、回転軸線Ｌ１とする）と平行にヨーク１２と反対側に直線的に延びている。各給電ターミナル２３，２４において、回転軸線Ｌ１と平行に延びたこの部分は、端子接続部２３ａ，２４ａとなっている。また、各給電ターミナル２３，２４における端子接続部２３ａ，２４ａよりも基端側の部位であってブラシホルダ２１から露出した部分には、給電ブラシ２２が電気的に接続されている。 (4) The brush holder 21 holds a pair of power supply terminals 23 and 24. In the present embodiment, the power supply terminals 23 and 24 are insert-molded in a resin brush holder 21. Each of the power supply terminals 23 and 24 is formed by pressing a conductive metal plate material, and is embedded in the brush holder 21 so as to be partially exposed to the outside of the brush holder 21. The tip of each of the power supply terminals 23 and 24 is exposed to the outside of the brush holder 21 at a position radially displaced from the rotary shaft 14 (a position shifted downward from the rotational axis L1 of the rotary shaft 14 in FIG. 2). ing. A portion exposed to the outside of the brush holder 21 on the tip end side of each of the power supply terminals 23 and 24 is linearly formed on a side opposite to the yoke 12 in parallel with a rotation axis L1 of the rotation shaft 14 (hereinafter, referred to as a rotation axis L1). Extends. In each of the power supply terminals 23 and 24, this portion extending parallel to the rotation axis L1 is a terminal connection portion 23a or 24a. A power supply brush 22 is electrically connected to a portion of each of the power supply terminals 23 and 24 closer to the base end than the terminal connection portions 23a and 24a and exposed from the brush holder 21.
　モータ１０は、回転子１１の回転を減速する減速機構３１を収容しヨーク１２に連結される樹脂製のハウジングケース４１を備えている。ハウジングケース４１は、ヨーク１２と回転軸線Ｌ１方向に対向する位置（図２において右側の端部）に、該ハウジングケース４１とヨーク１２とを固定するための固定部４２を備えている。固定部４２は、ヨーク１２のフランジ部１２ａ及びブラシホルダ２１と回転軸線Ｌ１方向に重なる形状をなしている。また、固定部４２には、ブラシホルダ２１におけるヨーク１２から突出した部分を収容する図示しない凹部が設けられている。そして、ハウジングケース４１は、固定部４２とヨーク１２との間にブラシホルダ２１を挟持した状態でヨーク１２のフランジ部１２ａが螺子４３にて固定部４２に固定されることによりヨーク１２と連結されている。 The motor 10 includes a resin housing case 41 that houses the speed reduction mechanism 31 that reduces the rotation of the rotor 11 and is connected to the yoke 12. The housing case 41 includes a fixing portion 42 for fixing the housing case 41 and the yoke 12 at a position (an end on the right side in FIG. 2) facing the yoke 12 in the direction of the rotation axis L1. The fixing portion 42 has a shape overlapping the flange portion 12a of the yoke 12 and the brush holder 21 in the direction of the rotation axis L1. The fixing portion 42 is provided with a concave portion (not shown) for accommodating a portion of the brush holder 21 projecting from the yoke 12. The housing case 41 is connected to the yoke 12 by fixing the flange portion 12 a of the yoke 12 to the fixing portion 42 with the screw 43 while the brush holder 21 is held between the fixing portion 42 and the yoke 12. ing.
　ハウジングケース４１は、固定部４２から回転軸線Ｌ１方向にヨーク１２と反対側に延びるウォーム収容部４４を有する。ウォーム収容部４４には、回転軸１４と一体回転する螺子歯状のウォーム３２が収容されている。また、ハウジングケース４１は、ウォーム収容部４４の側方（図２において上側方）に同ウォーム収容部４４と一体に設けられたウォームホイール収容部４５を有する。ウォームホイール収容部４５には、略円板状をなすウォームホイール３３が回転可能に収容されている。本実施形態では、減速機構３１は、このウォームホイール３３とウォーム３２とから構成されたウォーム減速機構である。ウォームホイール３３の径方向の中央部には、同ウォームホイール３３の軸方向に延びる出力軸３４が同ウォームホイール３３と一体回転可能に設けられており、減速機構３１にて減速した回転は、この出力軸３４から出力されるようになっている。 The housing case 41 has a worm housing portion 44 extending from the fixed portion 42 to the side opposite to the yoke 12 in the direction of the rotation axis L1. The worm housing portion 44 houses the worm 32 in the form of a screw tooth that rotates integrally with the rotating shaft 14. Further, the housing case 41 has a worm wheel housing 45 provided integrally with the worm housing 44 on the side (upper side in FIG. 2) of the worm housing 44. A worm wheel 33 having a substantially disk shape is rotatably housed in the worm wheel housing 45. In the present embodiment, the speed reduction mechanism 31 is a worm speed reduction mechanism including the worm wheel 33 and the worm 32. An output shaft 34 extending in the axial direction of the worm wheel 33 is provided at a radially central portion of the worm wheel 33 so as to be integrally rotatable with the worm wheel 33. The output is output from the output shaft 34.
　また、ハウジングケース４１は、固定部４２と回転軸線Ｌ１方向に隣り合う部位に、基板収容凹部４６を有する。基板収容凹部４６は、回転軸線Ｌ１と直交する方向であって出力軸３４の回転軸線と平行な方向（図２において紙面垂直方向）に凹設された凹部である。本実施形態の基板収容凹部４６は、回転軸線Ｌ１と直交する方向であって基板収容凹部４６の開口部４６ａから見ると（即ち図２に示す状態）、回転軸線Ｌ１方向に長い長方形状をなしている。 The housing case 41 has a substrate accommodating concave portion 46 at a position adjacent to the fixing portion 42 in the direction of the rotation axis L1. The substrate accommodating concave portion 46 is a concave portion provided in a direction perpendicular to the rotation axis L1 and parallel to the rotation axis of the output shaft 34 (perpendicular direction in FIG. 2). The substrate accommodating concave portion 46 of the present embodiment has a rectangular shape that is long in the direction of the rotational axis L1 when viewed from the opening 46a of the substrate accommodating concave portion 46 in a direction orthogonal to the rotation axis L1. ing.
　基板収容凹部４６は、同基板収容凹部４６において固定部４２と隣り合う部位を仕切り壁４７によって部分的に仕切って設けられたターミナル挿入部４８を有する。仕切り壁４７は、基板収容凹部４６の内部で固定部４２から回転軸線Ｌ１方向に離間した位置に設けられており、基板収容凹部４６の底面４６ｂから基板収容凹部４６の開口部４６ａに向かって突出している。また、仕切り壁４７は、基板収容凹部４６の開口部４６ａから見ると（図２参照）、回転軸線Ｌ１方向と直交する方向に沿ってウォーム収容部４４から基板収容凹部４６の側壁部４６ｃまで延びている。なお、側壁部４６ｃは、基板収容凹部４６の外周に沿って立設された周壁である。 The substrate housing recess 46 has a terminal insertion portion 48 provided by partitioning a portion adjacent to the fixing portion 42 in the substrate housing recess 46 by a partition wall 47. The partition wall 47 is provided in the substrate accommodating concave portion 46 at a position separated from the fixed portion 42 in the direction of the rotation axis L1 and protrudes from the bottom surface 46b of the substrate accommodating concave portion 46 toward the opening 46a of the substrate accommodating concave portion 46. ing. When viewed from the opening 46a of the substrate housing recess 46 (see FIG. 2), the partition wall 47 extends from the worm housing 44 to the side wall 46c of the substrate housing recess 46 along a direction orthogonal to the direction of the rotation axis L1. ing. The side wall portion 46c is a peripheral wall that stands upright along the outer periphery of the substrate housing concave portion 46.
　また、図２及び図３に示すように、ハウジングケース４１は、回転軸線Ｌ１方向に固定部４２を貫通しターミナル挿入部４８の内側に開口した一対のターミナル挿入口５１，５２を有する。ターミナル挿入口５１，５２は、固定部４２に設けられたブラシホルダ２１を収容する前記凹部（図示略）とターミナル挿入部４８とを連通している。ターミナル挿入口５１，５２は、基板収容凹部４６の凹設方向から見ると（即ち図２に示す状態）、端子接続部２３ａ，２４ａの間隔と同じ間隔で回転軸線Ｌ１方向と直交する方向に離間している。 As shown in FIGS. 2 and 3, the housing case 41 has a pair of terminal insertion ports 51, 52 that penetrate the fixing part 42 in the direction of the rotation axis L <b> 1 and open inside the terminal insertion part 48. The terminal insertion ports 51 and 52 communicate the terminal insertion portion 48 with the concave portion (not shown) for accommodating the brush holder 21 provided in the fixing portion 42. The terminal insertion openings 51 and 52 are separated from each other in the direction perpendicular to the direction of the rotation axis L1 at the same interval as the interval between the terminal connecting portions 23a and 24a when viewed from the recessed direction of the substrate accommodating recess 46 (that is, the state shown in FIG. 2). are doing.
　図４に示すように、前記給電ターミナル２３，２４は、各給電ターミナル２３，２４の先端側からターミナル挿入口５１，５２に挿通されてターミナル挿入部４８に挿入されることにより、端子接続部２３ａ，２４ａがそれぞれターミナル挿入部４８の内部（基板収容凹部４６の内部）に配置されている。ターミナル挿入部４８内に配置された端子接続部２３ａ，２４ａは、それぞれ回転軸線Ｌ１と平行に延びるとともに、互いに平行をなしている。また、同端子接続部２３ａ，２４ａは、基板収容凹部４６の凹設方向から見ると、回転軸線Ｌ１方向と直交する方向に離間している。更に、同端子接続部２３ａ，２４ａの先端（給電ターミナル２３，２４の先端）は、仕切り壁４７に達している。 As shown in FIG. 4, the power supply terminals 23 and 24 are inserted into terminal insertion ports 48 from terminal ends of the power supply terminals 23 and 24, and are inserted into the terminal insertion portions 48. , 24a are arranged inside the terminal insertion portion 48 (inside the substrate accommodating recess 46). The terminal connection portions 23a and 24a arranged in the terminal insertion portion 48 extend in parallel with the rotation axis L1 and are parallel to each other. The terminal connecting portions 23a and 24a are separated from each other in a direction perpendicular to the direction of the rotation axis L1 when viewed from the direction in which the substrate accommodating recess 46 is provided. Further, the ends of the terminal connection portions 23 a and 24 a (the ends of the power supply terminals 23 and 24) reach the partition wall 47.
　図１及び図５に示すように、基板収容凹部４６には、モータ１０の駆動を制御するための制御装置７１が収容されている。制御装置７１は、複数の電子部品が実装された回路基板７２を有する。回路基板７２は、基板収容凹部４６の開口部４６ａよりも一回り小さい長方形の平板状をなしている。そして、回路基板７２は、基板収容凹部４６の開口部４６ａを略閉塞するように、基板収容凹部４６内に収容されている。回路基板７２は、回転軸線Ｌ１方向と平行をなすように（回転軸線Ｌ１方向と直交する方向が回路基板７２の厚さ方向となるように）、且つ、出力軸３４の回転軸線と回路基板７２の厚さ方向とが平行をなすように基板収容凹部４６に収容されている。また、回路基板７２は、基板収容凹部４６の凹設方向と回路基板７２の厚さ方向とが一致するように同基板収容凹部４６に収容されている。 制 御 As shown in FIGS. 1 and 5, a control device 71 for controlling driving of the motor 10 is housed in the substrate housing recess 46. The control device 71 has a circuit board 72 on which a plurality of electronic components are mounted. The circuit board 72 has a rectangular flat plate shape that is slightly smaller than the opening 46 a of the board housing recess 46. The circuit board 72 is housed in the board housing recess 46 so as to substantially close the opening 46a of the board housing recess 46. The circuit board 72 is parallel to the direction of the rotation axis L1 (so that the direction perpendicular to the direction of the rotation axis L1 is the thickness direction of the circuit board 72), and the rotation axis of the output shaft 34 and the circuit board 72. Is accommodated in the substrate accommodating recess 46 so that the thickness direction of the substrate is parallel to the thickness direction. The circuit board 72 is accommodated in the board accommodating recess 46 such that the direction in which the board accommodating recess 46 is provided coincides with the thickness direction of the circuit board 72.
　図２及び図５に示すように、回路基板７２は、給電ターミナル２３，２４と電気的に接続される一対の端子７３，７４を備えている。端子７３，７４は、回路基板７２においてターミナル挿入部４８と重なる部分に立設されている。各端子７３，７４は、回路基板７２に対して直角をなすように立設された二股端子であり、先端部に二股状に分岐した一対の挟持片７５を有する。また、端子７３と端子７４とは、端子接続部２３ａと端子接続部２４ａとの間の距離と同じだけ回転軸線Ｌ１方向と直交する方向（図５において上下方向）に離間するように設けられている。 2 and 5, the circuit board 72 includes a pair of terminals 73 and 74 that are electrically connected to the power supply terminals 23 and 24. The terminals 73 and 74 are erected on a portion of the circuit board 72 that overlaps with the terminal insertion portion 48. Each of the terminals 73 and 74 is a bifurcated terminal erected at a right angle with respect to the circuit board 72, and has a pair of clamping pieces 75 branched in a bifurcated shape at the distal end. The terminals 73 and 74 are provided so as to be separated from each other in the direction (vertical direction in FIG. 5) orthogonal to the direction of the rotation axis L1 by the same distance as the distance between the terminal connection portions 23a and 24a. I have.
　図４及び図５に示すように、これらの端子７３，７４は、端子接続部２３ａ，２４ａの延びる方向に対して交差する方向から端子接続部２３ａ，２４ａに電気的に接続されている。詳述すると、一方の端子７３は、一方の給電ターミナル２３の端子接続部２３ａが一対の挟持片７５の間に差し込まれるように、端子接続部２３ａに対して回転軸線Ｌ１方向と直交する方向から配置され、当該一対の挟持片７５によって端子接続部２３ａを挟持している。これにより、端子７３は、端子接続部２３ａに対して回転軸線Ｌ１方向と直交する方向であってハウジングケース４１に対する回路基板７２の組付け方向から接続されている。同様に、他方の端子７４は、他方の給電ターミナル２４の端子接続部２４ａが一対の挟持片７５の間に差し込まれるように、端子接続部２４ａに対して回転軸線Ｌ１方向と直交する方向から配置され、当該一対の挟持片７５によって端子接続部２４ａを挟持している。これにより、端子７４は、端子接続部２４ａに対して回転軸線Ｌ１方向と直交する方向であってハウジングケース４１に対する回路基板７２の組付け方向から接続されている。そして、端子接続部２３ａにおいて端子７３が接続される位置が端子接続位置２３ｂとなっており、端子接続部２４ａにおいて端子７４が接続される位置が端子接続位置２４ｂとなっている。本実施形態では、端子接続部２３ａにおける端子接続位置２３ｂと、端子接続部２４ａにおける端子接続位置２４ｂとは、基板収容凹部４６の凹設方向から見て、回転軸線Ｌ１方向と直交する一直線上（図４において一点鎖線で図示した直線Ｌ２上）に位置している。 As shown in FIGS. 4 and 5, these terminals 73 and 74 are electrically connected to the terminal connection portions 23a and 24a from a direction intersecting the direction in which the terminal connection portions 23a and 24a extend. More specifically, the one terminal 73 is connected to the terminal connecting portion 23a from a direction perpendicular to the direction of the rotation axis L1 so that the terminal connecting portion 23a of the one power supply terminal 23 is inserted between the pair of holding pieces 75. The terminal connection portion 23a is disposed between the pair of holding pieces 75. As a result, the terminal 73 is connected to the terminal connection portion 23a in a direction orthogonal to the direction of the rotation axis L1 and in a direction in which the circuit board 72 is attached to the housing case 41. Similarly, the other terminal 74 is arranged from the direction orthogonal to the rotation axis L1 direction with respect to the terminal connection portion 24a so that the terminal connection portion 24a of the other power supply terminal 24 is inserted between the pair of holding pieces 75. The terminal connecting portion 24a is held between the pair of holding pieces 75. Thus, the terminal 74 is connected to the terminal connection portion 24a in a direction orthogonal to the direction of the rotation axis L1 and in a direction in which the circuit board 72 is attached to the housing case 41. The position where the terminal 73 is connected in the terminal connection part 23a is the terminal connection position 23b, and the position where the terminal 74 is connected in the terminal connection part 24a is the terminal connection position 24b. In the present embodiment, the terminal connection position 23b in the terminal connection portion 23a and the terminal connection position 24b in the terminal connection portion 24a are on a straight line orthogonal to the direction of the rotation axis L1 when viewed from the recessed direction of the substrate housing concave portion 46 ( 4 (located on a straight line L2 shown by a dashed line).
　なお、図１及び図５に示すように、回路基板７２には、外部の電源装置に電気的に接続された外部コネクタ（図示略）が接続されるコネクタ部（図示略）が設けられている。このコネクタ部は、基板収容凹部４６の側壁部４６ｃに設けられた切欠き部５３からハウジングケース４１の外部に露出している。また、コネクタ部は、回路基板７２において端子７３，７４と電気的に接続されている。 As shown in FIGS. 1 and 5, the circuit board 72 is provided with a connector portion (not shown) to which an external connector (not shown) electrically connected to an external power supply device is connected. . This connector portion is exposed to the outside of the housing case 41 from a cutout portion 53 provided in a side wall portion 46c of the board accommodating concave portion 46. The connector section is electrically connected to the terminals 73 and 74 on the circuit board 72.
　図３及び図４に示すように、ターミナル挿入部４８には、基板収容凹部４６の底面４６ｂから基板収容凹部４６の開口部４６ａに向けて突出し端子接続部２３ａ，２４ａの延びる方向（本実施形態では回転軸線Ｌ１方向）と直交する方向に端子接続部２３ａ，２４ａと並ぶ突出壁５４ａ，５４ｂ，５４ｃが設けられている。突出壁５４ａ，５４ｂ，５４ｃは、端子接続位置２３ｂ，２４ｂの先端よりも給電ターミナル２３，２４の基端側（図４において右側）に位置している。そして、ターミナル挿入部４８の内部において、突出壁５４ａは、ウォーム収容部４４と端子接続部２３ａとの間に位置し、突出壁５４ｂは、端子接続部２３ａと端子接続部２４ａとの間に位置し、突出壁５４ｃは、端子接続部２４ａと側壁部４６ｃとの間に位置している。 As shown in FIGS. 3 and 4, the terminal insertion portion 48 has a direction in which the terminal connecting portions 23 a and 24 a protrude from the bottom surface 46 b of the board housing recess 46 toward the opening 46 a of the board housing recess 46 and extend (this embodiment). In this case, projecting walls 54a, 54b, and 54c are provided in a direction orthogonal to the rotation axis L1). The protruding walls 54a, 54b, 54c are located closer to the base end of the power supply terminals 23, 24 (the right side in FIG. 4) than the distal ends of the terminal connection positions 23b, 24b. And inside the terminal insertion part 48, the protruding wall 54a is located between the worm housing part 44 and the terminal connecting part 23a, and the protruding wall 54b is located between the terminal connecting part 23a and the terminal connecting part 24a. The projecting wall 54c is located between the terminal connecting portion 24a and the side wall portion 46c.
　また、前記仕切り壁４７には、回転軸線Ｌ１方向と直交する方向に離間した２箇所に仕切り壁４７の先端から基端に向かって凹設された分離溝４７ａ，４７ｂが設けられている。この分離溝４７ａ，４７ｂが設けられることにより、仕切り壁４７は、分割壁５５ａ，５５ｂ，５５ｃの３つの部位に分割されている。そして、一方の分離溝４７ａには、一方の給電ターミナル２３の先端部が配置され、他方の分離溝４７ｂには、他方の給電ターミナル２４の先端部が配置されている。そのため、分割壁５５ａ，５５ｂ，５５ｃは、端子接続部２３ａ，２４ａの延びる方向と直交する方向（図４において上下方向）に端子接続部２３ａ，２４ａと並んでいる。 分離 Further, the partition wall 47 is provided with separation grooves 47a and 47b recessed from the distal end to the base end of the partition wall 47 at two locations separated in a direction orthogonal to the direction of the rotation axis L1. By providing the separation grooves 47a and 47b, the partition wall 47 is divided into three portions, namely, the divided walls 55a, 55b and 55c. The tip of one power supply terminal 23 is arranged in one separation groove 47a, and the tip of the other power supply terminal 24 is arranged in the other separation groove 47b. Therefore, the divided walls 55a, 55b, and 55c are aligned with the terminal connection portions 23a and 24a in a direction (vertical direction in FIG. 4) orthogonal to the direction in which the terminal connection portions 23a and 24a extend.
　基板収容凹部４６の内部において、分割壁５５ａは、ウォーム収容部４４と端子接続部２３ａとの間に位置し、分割壁５５ｂは、端子接続部２３ａと端子接続部２４ａとの間に位置し、分割壁５５ｃは、端子接続部２４ａと側壁部４６ｃとの間に位置している。従って、基板収容凹部４６の開口部４６ａから見て（基板収容凹部４６の凹設方向から見て）、突出壁５４ａ，５４ｂは端子接続部２３ａに対し同端子接続部２３ａの延びる方向と直交する方向の両側に設けられる。分割壁５５ａ，５５ｂは、端子接続部２３ａに対し同端子接続部２３ａの延びる方向と直交する方向の両側に設けられる。突出壁５４ａ，５４ｂと分割壁５５ａ，５５ｂとは、端子接続部２３ａの端子接続位置２３ｂに対して端子接続部２３ａの延びる方向の両側に位置する。また、基板収容凹部４６の開口部４６ａから見て、突出壁５４ｂ，５４ｃは、端子接続部２４ａに対し同端子接続部２４ａの延びる方向と直交する方向の両側に設けられる。分割壁５５ｂ，５５ｃは、端子接続部２４ａに対し同端子接続部２４ａの延びる方向と直交する方向の両側に設けられる。突出壁５４ｂ，５４ｃと分割壁５５ｂ，５５ｃとは、端子接続部２４ａの端子接続位置２４ｂに対して端子接続部２４ａの延びる方向の両側に位置する。 Inside the substrate accommodating recess 46, the dividing wall 55a is located between the worm accommodating portion 44 and the terminal connecting portion 23a, and the dividing wall 55b is located between the terminal connecting portion 23a and the terminal connecting portion 24a, The division wall 55c is located between the terminal connection part 24a and the side wall part 46c. Accordingly, when viewed from the opening 46a of the substrate accommodating recess 46 (as viewed from the direction in which the substrate accommodating recess 46 is provided), the protruding walls 54a, 54b are orthogonal to the terminal connecting portion 23a and the direction in which the terminal connecting portion 23a extends. It is provided on both sides of the direction. The dividing walls 55a and 55b are provided on both sides of the terminal connecting portion 23a in a direction orthogonal to the direction in which the terminal connecting portion 23a extends. The protruding walls 54a, 54b and the dividing walls 55a, 55b are located on both sides in the direction in which the terminal connection portion 23a extends with respect to the terminal connection position 23b of the terminal connection portion 23a. Also, when viewed from the opening 46a of the substrate accommodating recess 46, the protruding walls 54b and 54c are provided on both sides of the terminal connecting portion 24a in a direction orthogonal to the direction in which the terminal connecting portion 24a extends. The dividing walls 55b and 55c are provided on both sides of the terminal connecting portion 24a in a direction orthogonal to the direction in which the terminal connecting portion 24a extends. The protruding walls 54b and 54c and the dividing walls 55b and 55c are located on both sides in the direction in which the terminal connection portion 24a extends with respect to the terminal connection position 24b of the terminal connection portion 24a.
　これらの突出壁５４ａ，５４ｂ，５４ｃ及び仕切り壁４７（即ち分割壁５５ａ，５５ｂ，５５ｃ）の先端（基板収容凹部４６の底面４６ｂと反対側の端）は、端子接続部２３ａ，２４ａよりも基板収容凹部４６の開口部４６ａ寄り（図４において紙面手前側）に位置している。 The tips of the protruding walls 54a, 54b, 54c and the partition walls 47 (ie, the divided walls 55a, 55b, 55c) (the ends opposite to the bottom surface 46b of the substrate accommodating recess 46) are closer to the substrate than the terminal connection portions 23a, 24a. It is located closer to the opening 46a of the housing recess 46 (on the near side in FIG. 4).
　また、ハウジングケース４１は、基板収容凹部４６の内部に、一対の規制部６３を有する。一対の規制部６３は、端子接続部２３ａにおける端子接続位置２３ｂよりも先端側の部位の、端子接続部２３ａの延びる方向と直交する方向（図４において上下方向）の位置を規制する。一対の規制部６３は、分離溝４７ａに設けられており、分割壁５５ａと端子接続部２３ａとの間、及び、分割壁５５ｂと端子接続部２３ａとの間にそれぞれ設けられている。また、一対の規制部６３は、分割壁５５ａ，５５ｂにおける端子接続部２３ａ寄りの側面にそれぞれ一体に設けられている。規制部６３の各々は、端子接続部２３ａにおける端子接続位置２３ｂよりも先端側の部位と端子接続部２３ａの延びる方向と直交する方向（図４において上下方向）に対向している。そして、規制部６３の各々における端子接続部２３ａと対向する側面は、端子接続部２３ａとの間に一定の間隔を有する規制面６３ａとなっている。一方の規制部６３の規制面６３ａ及び他方の規制部６３の規制面６３ａは、回転軸線Ｌ１方向と平行な平面状をなすとともに、互いに平行をなしている。従って、端子接続部２３ａの両側の規制部６３間の距離Ｄ１（即ち規制面６３ａ間の距離）は、端子接続部２４ａの延びる方向に沿って一定の値になっている（図３参照）。そして、距離Ｄ１は、端子接続部２３ａの厚さＴ１よりも僅かに長い程度の距離となっている。なお、距離Ｄ１は、端子接続部２３ａに接続される端子７３の一対の挟持片７５の寸法及び形状に応じて設定されている。すなわち、距離Ｄ１は、一対の規制面６３ａ間に端子接続部２３ａの先端部が配置されていれば、制御装置７１の組み付け時に、挟持片７５の先端のＲ形状によって、端子接続部２３ａが一対の挟持片７５の間に差し込まれるように設定されている。 ハ ウ ジ ン グ Furthermore, the housing case 41 has a pair of restricting portions 63 inside the substrate accommodating recess 46. The pair of restricting portions 63 restrict the position of the portion of the terminal connecting portion 23a closer to the distal end than the terminal connecting position 23b in the direction (vertical direction in FIG. 4) orthogonal to the direction in which the terminal connecting portion 23a extends. The pair of regulating portions 63 are provided in the separation groove 47a, and are provided between the dividing wall 55a and the terminal connecting portion 23a and between the dividing wall 55b and the terminal connecting portion 23a, respectively. The pair of restricting portions 63 are integrally provided on the side surfaces of the divided walls 55a and 55b near the terminal connecting portion 23a. Each of the restricting portions 63 faces a portion of the terminal connecting portion 23a closer to the tip end than the terminal connecting position 23b in a direction (vertical direction in FIG. 4) orthogonal to the direction in which the terminal connecting portion 23a extends. The side surface of each of the restricting portions 63 facing the terminal connecting portion 23a is a restricting surface 63a having a certain distance from the terminal connecting portion 23a. The restricting surface 63a of the restricting portion 63 and the restricting surface 63a of the other restricting portion 63 have a planar shape parallel to the direction of the rotation axis L1 and are parallel to each other. Therefore, the distance D1 between the restriction portions 63 on both sides of the terminal connection portion 23a (that is, the distance between the restriction surfaces 63a) has a constant value along the direction in which the terminal connection portion 24a extends (see FIG. 3). The distance D1 is a distance slightly longer than the thickness T1 of the terminal connection portion 23a. The distance D1 is set according to the size and shape of the pair of holding pieces 75 of the terminal 73 connected to the terminal connection portion 23a. That is, if the distal end portion of the terminal connecting portion 23a is disposed between the pair of regulating surfaces 63a, the distance D1 is set such that the terminal connecting portion 23a has a Is set so as to be inserted between the holding pieces 75.
　図３及び図４に示すように、規制部６３は、規制部６３における給電ターミナル２３の先端と反対側の端部（ターミナル挿入口５１寄りの端部であって図４において右側の端部）に、導入部６３ｂを有する。導入部６３ｂは、端子接続部２３ａの延びる方向に沿って規制部６３における第１端（給電ターミナル２３の先端と反対側の端）から給電ターミナル２３の先端側に向かうにつれて、端子接続部２３ａとの間の距離（端子接続部２３ａの延びる方向と直交する方向における導入部６３ｂと端子接続部２３ａとの間の距離）が徐々に短くなるように形成された部分である。本実施形態では、規制部６３における給電ターミナル２３の先端と反対側の端部において、端子接続部２３ａと隣り合う部位が円弧状に形成されており、この円弧状の部分が導入部６３ｂとなっている。規制部６３にこの導入部６３ｂが設けられることにより、端子接続部２３ａの両側の規制部６３における給電ターミナル２３の先端と反対側の端部は、給電ターミナル２３の先端側に向かうにつれて互いの間の空間の幅が徐々に狭くなっている。 As shown in FIGS. 3 and 4, the restricting portion 63 is an end of the restricting portion 63 on the opposite side to the tip of the power supply terminal 23 (the end near the terminal insertion port 51 and the right end in FIG. 4). Has an introduction portion 63b. The introduction portion 63b extends from the first end (the end opposite to the distal end of the power supply terminal 23) of the regulating portion 63 along the direction in which the terminal connection portion 23a extends to the distal end side of the power supply terminal 23. (The distance between the introduction portion 63b and the terminal connection portion 23a in the direction orthogonal to the direction in which the terminal connection portion 23a extends) is a portion formed so as to gradually become shorter. In the present embodiment, a portion adjacent to the terminal connecting portion 23a is formed in an arc shape at an end of the regulating portion 63 opposite to the tip of the power supply terminal 23, and this arc-shaped portion serves as the introduction portion 63b. ing. With the introduction portion 63b provided in the regulation portion 63, the ends of the regulation portions 63 on both sides of the terminal connection portion 23a, which are opposite to the tip of the power supply terminal 23, are located between each other as they approach the tip side of the power supply terminal 23. The width of the space is gradually narrowing.
　また、ハウジングケース４１は、基板収容凹部４６の内部に、一対の規制部６４を有する。一対の規制部６４は、端子接続部２４ａにおける端子接続位置２４ｂよりも先端側の部位の、端子接続部２４ａの延びる方向と直交する方向（図４において上下方向）の位置を規制する。一対の規制部６４は、分離溝４７ｂに設けられており、分割壁５５ｂと端子接続部２４ａとの間、及び、分割壁５５ｃと端子接続部２４ａとの間にそれぞれ設けられている。また、一対の規制部６４は、分割壁５５ｂ，５５ｃにおける端子接続部２４ａ寄りの側面にそれぞれ一体に設けられている。規制部６４の各々は、端子接続部２４ａにおける端子接続位置２４ｂよりも先端側の部位と端子接続部２４ａの延びる方向と直交する方向（図４において上下方向）に対向している。 ハ ウ ジ ン グ The housing case 41 has a pair of regulating portions 64 inside the substrate accommodating recess 46. The pair of restricting portions 64 restrict the position of a portion of the terminal connecting portion 24a closer to the distal end than the terminal connecting position 24b in a direction (vertical direction in FIG. 4) orthogonal to the direction in which the terminal connecting portion 24a extends. The pair of regulating portions 64 are provided in the separation groove 47b, and are provided between the dividing wall 55b and the terminal connecting portion 24a and between the dividing wall 55c and the terminal connecting portion 24a. The pair of restricting portions 64 are integrally provided on the side surfaces of the divided walls 55b and 55c near the terminal connecting portion 24a. Each of the restricting portions 64 faces a portion of the terminal connecting portion 24a closer to the distal end than the terminal connecting position 24b in a direction perpendicular to the extending direction of the terminal connecting portion 24a (vertical direction in FIG. 4).
　端子接続部２４ａの両側に設けられた当該規制部６４は、端子接続部２３ａの両側に設けられた規制部６３と同様の構成をなしている。即ち、規制部６４の各々における端子接続部２４ａと対向する側面は、端子接続部２４ａとの間に一定の間隔を有する規制面６４ａとなっている。端子接続部２４ａの両側の規制部６４間の距離Ｄ２（即ち規制面６４ａ間の距離）は、端子接続部２４ａの延びる方向に沿って一定の値になっている。そして、距離Ｄ２は、端子接続部２４ａの厚さＴ２よりも僅かに長い程度の距離となっている。また、距離Ｄ２は、端子接続部２４ａに接続される端子７４の一対の挟持片７５の寸法及び形状に応じて設定されている。すなわち、距離Ｄ２は、一対の規制面６４ａ間に端子接続部２４ａの先端部が配置されていれば、制御装置７１の組み付け時に、挟持片７５の先端のＲ形状によって、端子接続部２４ａが一対の挟持片７５の間に差し込まれるように設定されている。 規 制 The regulating portions 64 provided on both sides of the terminal connecting portion 24a have the same configuration as the regulating portions 63 provided on both sides of the terminal connecting portion 23a. In other words, the side surface of each of the restricting portions 64 facing the terminal connecting portion 24a is a restricting surface 64a having a certain distance from the terminal connecting portion 24a. The distance D2 between the restriction portions 64 on both sides of the terminal connection portion 24a (that is, the distance between the restriction surfaces 64a) has a constant value along the direction in which the terminal connection portion 24a extends. The distance D2 is a distance slightly longer than the thickness T2 of the terminal connection portion 24a. Further, the distance D2 is set according to the size and shape of the pair of holding pieces 75 of the terminal 74 connected to the terminal connection portion 24a. That is, if the distal end portion of the terminal connection portion 24a is arranged between the pair of regulating surfaces 64a, the distance D2 is set such that the terminal connection portion 24a is positioned in a pair by the R shape of the distal end of the holding piece 75 when the control device 71 is assembled. Is set so as to be inserted between the holding pieces 75.
　また、規制部６４は、規制部６４における給電ターミナル２４の先端と反対側の端部（ターミナル挿入口５２寄りの端部であって図４において右側の端部）に、導入部６３ｂと同様の構成をなす導入部６４ｂを有する。導入部６４ｂは、端子接続部２４ａの延びる方向に沿って規制部６４における第１端（給電ターミナル２４の先端と反対側の端）から給電ターミナル２４の先端側に向かうにつれて、端子接続部２４ａとの間の距離（端子接続部２４ａの延びる方向と直交する方向における導入部６４ｂと端子接続部２４ａとの間の距離）が徐々に短くなるように円弧状に形成されている。 In addition, the restricting portion 64 is provided at the end of the restricting portion 64 opposite to the tip of the power supply terminal 24 (the end near the terminal insertion port 52 and the right end in FIG. 4) similar to the introduction portion 63b. It has an introduction portion 64b that forms a configuration. The introduction portion 64b extends from the first end (the end opposite to the tip of the power supply terminal 24) of the regulating portion 64 along the direction in which the terminal connection portion 24a extends toward the tip end of the power supply terminal 24. (The distance between the introduction portion 64b and the terminal connection portion 24a in the direction orthogonal to the direction in which the terminal connection portion 24a extends) is formed in an arc shape so as to gradually become shorter.
　ここで、図４に示すように、端子接続部２３ａ，２４ａは、端子７３が接続される端子接続位置２３ｂ，２４ｂよりも基端側が、ノイズを吸収して低減するためのノイズ低減部材８１に覆われている。 Here, as shown in FIG. 4, the terminal connecting portions 23a and 24a have a noise reduction member 81 on the base end side of the terminal connection positions 23b and 24b to which the terminals 73 are connected for absorbing and reducing noise. Covered.
　詳しくは、図６に示すように、ノイズ低減部材８１は、端子接続部２３ａ，２４ａが撓むことを許容しつつ該端子接続部２３ａ，２４ａを覆っている。本実施形態のノイズ低減部材８１は、ノイズ吸収材料としてのフェライト粉とゴム材料とが混合された弾性を有するゴム製の部材であって、端子接続部２３ａ，２４ａに密着して隙間無く設けられている。 は Specifically, as shown in FIG. 6, the noise reduction member 81 covers the terminal connection portions 23a and 24a while allowing the terminal connection portions 23a and 24a to bend. The noise reduction member 81 of this embodiment is a rubber member having elasticity in which a ferrite powder as a noise absorbing material and a rubber material are mixed, and is provided in close contact with the terminal connection portions 23a and 24a without any gap. ing.
　また、ノイズ低減部材８１は、前記ターミナル挿入口５１，５２を通過可能な形状とされている。すなわち、ノイズ低減部材８１は、端子接続部２３ａ，２４ａの延びる方向から見てターミナル挿入口５１，５２の外形に含まれるように形成されている。本実施形態では、ブラシホルダ２１は、端子接続部２３ａ，２４ａの延びる方向と同方向に延びて該端子接続部２３ａ，２４ａの基端側を保持しつつ前記ターミナル挿入口５１，５２に挿入される保持部２１ａを有している。そして、ノイズ低減部材８１は、基板収容凹部４６の凹設方向から見て（図４参照）、回転軸線Ｌ１と直交する方向の幅Ｄ３が保持部２１ａの幅Ｄ４と同じであって、ターミナル挿入口５１，５２の幅Ｄ５よりも僅かに小さく設定されている。また、ノイズ低減部材８１の前記幅Ｄ３は、隣り合う前記突出壁５４ａ～５４ｃ同士の幅Ｄ６よりも小さく設定されている。 ノ イ ズ The noise reduction member 81 is shaped to be able to pass through the terminal insertion ports 51 and 52. That is, the noise reduction member 81 is formed so as to be included in the outer shape of the terminal insertion ports 51 and 52 when viewed from the direction in which the terminal connection portions 23a and 24a extend. In the present embodiment, the brush holder 21 is inserted into the terminal insertion ports 51, 52 while extending in the same direction as the terminal connection portions 23a, 24a and holding the base end sides of the terminal connection portions 23a, 24a. Holding portion 21a. The noise reduction member 81 has a width D3 in a direction perpendicular to the rotation axis L1 that is the same as the width D4 of the holding portion 21a when viewed from the recessed direction of the substrate housing recess 46 (see FIG. 4). The width is set slightly smaller than the width D5 of the mouths 51 and 52. The width D3 of the noise reduction member 81 is set smaller than the width D6 between the adjacent protruding walls 54a to 54c.
　図１及び図２に示すように、上記のようなモータ１０では、制御装置７１に接続された外部コネクタから供給された電流は、端子７３，７４、給電ターミナル２３，２４、給電ブラシ２２を介して回転子１１に供給される。すると、同回転子１１が回転する。そして、回転子１１の回転は、回転軸１４と一体回転するウォーム３２及び同ウォーム３２に噛合したウォームホイール３３にて減速されて出力軸３４から出力される。 As shown in FIGS. 1 and 2, in the above-described motor 10, the current supplied from the external connector connected to the control device 71 passes through the terminals 73 and 74, the power supply terminals 23 and 24, and the power supply brush 22. And supplied to the rotor 11. Then, the rotor 11 rotates. The rotation of the rotor 11 is reduced by the worm 32 that rotates integrally with the rotating shaft 14 and the worm wheel 33 that meshes with the worm 32, and is output from the output shaft 34.
　次に、本実施形態の作用について説明する。
　図２に示すように、モータ１０の組付け時にヨーク１２とハウジングケース４１とを連結する際、開口部にブラシホルダ２１が嵌合されたヨーク１２を、フランジ部１２ａと固定部４２との間にブラシホルダ２１が挟持されるようにハウジングケース４１に対して組み付ける。このとき、ブラシホルダ２１に保持された給電ターミナル２３，２４の先端側に位置する端子接続部２３ａ，２４ａは、ターミナル挿入口５１，５２に挿通されて、基板収容凹部４６のターミナル挿入部４８の内部に挿入される。そして、給電ターミナル２３，２４の端子接続部２３ａ，２４ａ及びノイズ低減部材８１は基板収容凹部４６のターミナル挿入部４８の内部に配置される。また、給電ターミナル２３，２４の先端部は、規制部６３，６４内に配置される。 Next, the operation of the present embodiment will be described.
As shown in FIG. 2, when connecting the yoke 12 and the housing case 41 at the time of assembling the motor 10, the yoke 12 with the brush holder 21 fitted in the opening is placed between the flange 12 a and the fixed part 42. Is attached to the housing case 41 so that the brush holder 21 is held therebetween. At this time, the terminal connection portions 23a and 24a located on the tip side of the power supply terminals 23 and 24 held by the brush holder 21 are inserted into the terminal insertion ports 51 and 52, and the terminal insertion portions 48 of the substrate accommodating recess 46 are inserted. Inserted inside. Then, the terminal connection portions 23a and 24a of the power supply terminals 23 and 24 and the noise reduction member 81 are arranged inside the terminal insertion portion 48 of the board housing recess 46. In addition, the distal ends of the power supply terminals 23 and 24 are arranged in the restriction portions 63 and 64.
　このようにして、給電ターミナル２３，２４は、端子接続部２３ａ，２４ａが端子７３，７４と接続可能な位置に配置され、更に、端子接続位置２３ｂ，２４ｂよりも先端側の部位の位置が規制部６３，６４によって規制された状態となる。この状態で、基板収容凹部４６に回転軸線Ｌ１方向と直交する方向（基板収容凹部４６の凹設方向と同方向）から回路基板７２が収容される。即ち、回路基板７２と共に基板収容凹部４６に挿入される端子７３，７４が挟持可能な位置に端子接続位置２３ｂ，２４ｂが位置する状態で、端子７３，７４が回転軸線Ｌ１方向と直交する方向からターミナル挿入部４８に挿入される。そして、端子７３が端子接続部２３ａを挟持するとともに、端子７４が端子接続部２４ａを挟持することにより、端子７３と給電ターミナル２３とが電気的に接続されるとともに、端子７４と給電ターミナル２４とが電気的に接続される。 In this manner, the power supply terminals 23 and 24 are arranged at positions where the terminal connection portions 23a and 24a can be connected to the terminals 73 and 74, and further, the positions of the parts closer to the distal end than the terminal connection positions 23b and 24b are regulated. The state is controlled by the parts 63 and 64. In this state, the circuit board 72 is accommodated in the substrate accommodating recess 46 from a direction perpendicular to the direction of the rotation axis L1 (the same direction as the recessed direction of the substrate accommodating recess 46). That is, in a state where the terminal connection positions 23b and 24b are located at positions where the terminals 73 and 74 inserted together with the circuit board 72 into the board accommodating recess 46 can be clamped, the terminals 73 and 74 are placed in a direction perpendicular to the direction of the rotation axis L1. It is inserted into the terminal insertion part 48. The terminal 73 sandwiches the terminal connection portion 23a and the terminal 74 sandwiches the terminal connection portion 24a, so that the terminal 73 and the power supply terminal 23 are electrically connected. Are electrically connected.
　次に、上記実施形態の効果を以下に記載する。
　（１）端子接続部２３ａ，２４ａは、回路基板７２の端子７３，７４が接続される端子接続位置２３ｂ，２４ｂよりも基端側の部位がノイズ低減部材８１によって覆われる。そのため、給電ブラシ２２で発生したノイズが回路基板７２及び外部の電源装置等に伝搬してしまうことを抑えることができる。そして、モータ１０の外部にノイズ低減部材が設けられるものに比べて全体的な搭載スペースの小型化を図ることができる。 Next, effects of the above embodiment will be described below.
(1) The terminal connection portions 23a and 24a are covered by the noise reduction member 81 at positions closer to the base end than the terminal connection positions 23b and 24b where the terminals 73 and 74 of the circuit board 72 are connected. Therefore, it is possible to suppress the noise generated by the power supply brush 22 from propagating to the circuit board 72 and an external power supply device. In addition, the overall mounting space can be reduced in size as compared with the case where the noise reduction member is provided outside the motor 10.
　（２）ノイズ低減部材８１は、端子接続部２３ａ，２４ａが撓むことを許容しつつ該端子接続部２３ａ，２４ａを覆う。そのため、端子接続部２３ａ，２４ａに端子７３，７４を接続する際に端子接続部２３ａ，２４ａを撓ませることができ、例えば寸法精度を高精度とすることなく容易に接続することができる。すなわち、端子接続部２３ａ，２４ａが撓むことを許容しないようにノイズ低減部材が設けられると、寸法精度を高精度としなければ、端子接続部２３ａ，２４ａに端子７３，７４を容易に接続することができなくなるといった虞があるが、これを回避することができる。 (2) The noise reduction member 81 covers the terminal connection portions 23a and 24a while allowing the terminal connection portions 23a and 24a to bend. Therefore, when connecting the terminals 73 and 74 to the terminal connection portions 23a and 24a, the terminal connection portions 23a and 24a can be bent, and for example, the connection can be easily performed without increasing the dimensional accuracy. That is, if the noise reduction member is provided so as not to allow the terminal connection portions 23a and 24a to bend, the terminals 73 and 74 can be easily connected to the terminal connection portions 23a and 24a unless the dimensional accuracy is made high. However, this can be avoided.
　（３）ノイズ低減部材８１は、弾性を有して端子接続部２３ａ，２４ａに密着して設けられるものである。そのため、端子接続部２３ａ，２４ａが撓むことが許容される。
　（４）ノイズ低減部材８１は、ノイズ吸収材料としてのフェライト粉とゴム材料とが混合されたゴム製の部材である。そのため、端子接続部２３ａ，２４ａが撓み易い。 (3) The noise reduction member 81 has elasticity and is provided in close contact with the terminal connection portions 23a and 24a. Therefore, bending of the terminal connection portions 23a and 24a is allowed.
(4) The noise reducing member 81 is a rubber member in which ferrite powder as a noise absorbing material and a rubber material are mixed. Therefore, the terminal connection portions 23a and 24a are easily bent.
　（５）ハウジングケース４１は、端子接続部２３ａ，２４ａの延びる方向と同方向に貫通して端子接続部２３ａ，２４ａが挿通されるターミナル挿入口５１，５２を有し、ノイズ低減部材８１は、ターミナル挿入口５１，５２を通過可能な形状を有している。よって、ノイズ低減部材８１を端子接続部２３ａ，２４ａに固定した状態で、ブラシホルダ２１とハウジングケース４１との組み付けが可能となる。よって、それらの組み付けが容易となる。 (5) The housing case 41 has terminal insertion ports 51 and 52 through which the terminal connection portions 23a and 24a are inserted in the same direction as the direction in which the terminal connection portions 23a and 24a extend. It has a shape that can pass through the terminal insertion ports 51 and 52. Therefore, the brush holder 21 and the housing case 41 can be assembled with the noise reduction member 81 fixed to the terminal connection portions 23a and 24a. Therefore, they can be easily assembled.
　本実施形態は、以下のように変更して実施することができる。本実施形態及び以下の変更例は、技術的に矛盾しない範囲で互いに組み合わせて実施することができる。
　・上記実施形態では、ノイズ低減部材８１は、弾性を有して端子接続部２３ａ，２４ａに密着して設けられるとしたが、これに限定されず、例えば、ノイズ低減部材は、基板収容凹部４６に固定され、端子接続部２３ａ，２４ａと隙間を有して設けられるものとしてもよい。 This embodiment can be implemented with the following modifications. The present embodiment and the following modifications can be implemented in combination with each other within a technically consistent range.
In the above embodiment, the noise reduction member 81 is elastic and provided in close contact with the terminal connection portions 23a and 24a. However, the present invention is not limited to this. , And may be provided with a gap from the terminal connection portions 23a and 24a.
　具体的には、例えば、図７及び図８に示すように、変更してもよい。この例では、ノイズ低減部材８２は、端子接続部２３ａ，２４ａが挿入される前の状態で、予め基板収容凹部４６内に固定されている。このノイズ低減部材８２は、端子接続部２３ａ，２４ａが遊嵌可能な中央孔を有する筒状であって、隣り合う突出壁５４ａ～５４ｃ同士の間に固定されている。そして、ノイズ低減部材８２は、端子接続部２３ａ，２４ａが挿入されて配置された状態では、端子接続部２３ａ，２４ａとの間に隙間Ｓを有している。このようにすると、例えば、ノイズ低減部材８２がゴム材料等を含まず硬い部材であっても、端子接続部２３ａ，２４ａが撓むことが許容される。 Specifically, for example, it may be changed as shown in FIGS. 7 and 8. In this example, the noise reduction member 82 is fixed in advance in the substrate accommodating recess 46 before the terminal connection portions 23a and 24a are inserted. The noise reduction member 82 has a cylindrical shape having a central hole into which the terminal connection portions 23a and 24a can be loosely fitted, and is fixed between adjacent protruding walls 54a to 54c. The noise reduction member 82 has a gap S between the terminal connection portions 23a and 24a when the terminal connection portions 23a and 24a are inserted and arranged. With this configuration, for example, even if the noise reduction member 82 is a hard member that does not include a rubber material or the like, the terminal connection portions 23a and 24a are allowed to bend.
　・上記実施形態では、ノイズ低減部材８１は、端子接続部２３ａ，２４ａが撓むことを許容しつつ該端子接続部２３ａ，２４ａを覆うとしたが、これに限定されず、例えば、ノイズ低減部材がゴム材料等を含まない硬い部材であり端子接続部２３ａ，２４ａに密着して設けられるものとしてもよい。 In the above embodiment, the noise reduction member 81 covers the terminal connection portions 23a and 24a while allowing the terminal connection portions 23a and 24a to bend. However, the present invention is not limited to this. Is a hard member not containing a rubber material or the like, and may be provided in close contact with the terminal connection portions 23a and 24a.
　・上記実施形態では、ノイズ低減部材８１は、ノイズ吸収材料としてのフェライト粉とゴム材料とが混合されたゴム製の部材であるとしたが、ゴム製以外で弾性を有する部材としてもよい。例えば、ノイズ低減部材は、ノイズ吸収材料としてのフェライト粉と軟性の樹脂材料とが混合された弾性を有する樹脂製の部材としてもよい。 In the above embodiment, the noise reduction member 81 is a rubber member in which a ferrite powder as a noise absorbing material and a rubber material are mixed, but may be a member having elasticity other than rubber. For example, the noise reduction member may be an elastic resin member in which ferrite powder as a noise absorbing material and a soft resin material are mixed.
　・上記実施形態では、ノイズ低減部材８１は、ノイズを吸収するものとしたが、ノイズの外部への伝搬を低減することができれば、他の構成のノイズ低減部材としてもよい。
　例えば、図９及び図１０に示すように、ノイズ低減部材は、並設される端子接続部２３ａ，２４ａ同士の間に設けられて相互インダクタンス及びキャパシタンスを増加させるための回路構成部材９１としてもよい。 In the above embodiment, the noise reduction member 81 absorbs noise. However, any other noise reduction member may be used as long as it can reduce the propagation of noise to the outside.
For example, as shown in FIGS. 9 and 10, the noise reduction member may be a circuit component member 91 provided between the terminal connection portions 23a and 24a arranged in parallel to increase mutual inductance and capacitance. .
　詳しくは、この例の回路構成部材９１は、屈曲した金属板材よりなる。そして、回路構成部材９１は、端子接続部２３ａ，２４ａの延びる方向から見て（図１０参照）、略Ｕ字状に形成されて端子接続部２３ａ，２４ａが圧入される圧入部９１ａと、該圧入部９１ａの一端から屈曲して側方であって互いに近づく方向に沿って延びる延設部９１ｂと、該延設部９１ｂから屈曲して互いに対向する対向部９１ｃとを有する。 Specifically, the circuit component 91 of this example is made of a bent metal plate. When viewed from the direction in which the terminal connecting portions 23a and 24a extend (see FIG. 10), the circuit component 91 is formed into a substantially U-shape, and the press-fitting portion 91a into which the terminal connecting portions 23a and 24a are press-fitted is formed. It has an extending portion 91b which is bent from one end of the press-fitting portion 91a and extends laterally and in a direction approaching each other, and an opposing portion 91c which is bent from the extending portion 91b and faces each other.
　このようにすると、回路構成部材９１にて相互インダクタンス及びキャパシタンスを増加させてコモンモードノイズの低減を図ることができる。また、回路構成部材９１は、屈曲した金属板材よりなるため、プレス加工にて容易に得ることができる。また、回路構成部材９１は、端子接続部２３ａ，２４ａが圧入可能な圧入部９１ａを有する構成であるため、例えば別部品等を用いることなく、端子接続部２３ａ，２４ａに対して容易に固定することができる。また、この構成では、例えば複数種類の回路構成部材９１を用意することなどによって、回路構成部材９１における対向部９１ｃの対向面積や対向距離を容易に変更可能であり、それによって相互インダクタンス及びキャパシタンスを容易に変更することができ、コモンモードノイズを容易且つ好適に低減することができる。 In this case, the mutual inductance and the capacitance can be increased in the circuit component member 91 to reduce the common mode noise. Further, since the circuit component 91 is made of a bent metal plate, it can be easily obtained by press working. Further, the circuit component 91 has a configuration in which the terminal connection portions 23a and 24a have press-fit portions 91a into which the terminal connection portions 23a and 24a can be press-fitted. be able to. In this configuration, for example, by preparing a plurality of types of circuit components 91, the facing area and facing distance of the facing portion 91c in the circuit components 91 can be easily changed, thereby reducing the mutual inductance and capacitance. It can be easily changed, and common mode noise can be easily and suitably reduced.
　また、上記回路構成部材９１の圧入部９１ａは、その一対の平行な壁同士の間隔が端子接続部２３ａ，２４ａを圧入可能な間隔に設定された構成としたが、端子接続部２３ａ，２４ａが圧入可能であれば、他の構成の圧入部としてもよい。 Further, the press-fitting portion 91a of the circuit component member 91 has a configuration in which the interval between the pair of parallel walls is set to an interval at which the terminal connecting portions 23a and 24a can be press-fitted. If the press-fitting is possible, the press-fitting portion may have another configuration.
　例えば、図１１～図１３に示すように、圧入部９１ａは、端子接続部２３ａ，２４ａの延びる方向から見て（図１０参照）、略Ｕ字状に形成されるとともに、その一対の平行な壁の少なくとも一方が内側に突出する押さえ部９１ｄを有した構成としてもよい。押さえ部９１ｄは、端子接続部２３ａ，２４ａを押圧するように機能することで圧入部９１ａは端子接続部２３ａ，２４ａが圧入可能とされている。なお、この例では、押さえ部９１ｄは、平行な壁の一方から切り起こされて内側に突出した構成としたが、同様に機能すれば、他の構成としてもよい。また、この例では、押さえ部９１ｄは、一対設けられた構成としたが、その数は１つや３つ以上としてもよい。また、回路構成部材９１は、例えば、かしめ固定や溶接やねじ止め等、圧入部９１ａ以外の構成で端子接続部２３ａ，２４ａに固定されるものとしてもよい。また、回路構成部材９１は、屈曲した金属板材よりなるとしたが、これに限定されず、例えばブロック状のもの等、他の構成としてもよい。 For example, as shown in FIGS. 11 to 13, the press-fit portion 91a is formed in a substantially U-shape when viewed from the direction in which the terminal connecting portions 23a and 24a extend (see FIG. 10), and the pair of parallel press-fit portions 91a are formed in parallel. At least one of the walls may have a pressing portion 91d protruding inward. The pressing portion 91d functions so as to press the terminal connecting portions 23a and 24a, so that the terminal connecting portions 23a and 24a can be press-fitted into the press-fitting portion 91a. In this example, the pressing portion 91d is cut and raised from one of the parallel walls and protrudes inward. However, another configuration may be used as long as the pressing portion 91d functions similarly. Further, in this example, the pressing portion 91d is configured to be provided in a pair, but the number may be one or three or more. Further, the circuit component member 91 may be fixed to the terminal connection portions 23a and 24a by a configuration other than the press-fitting portion 91a, for example, by caulking, welding, or screwing. In addition, the circuit component member 91 is made of a bent metal plate material, but is not limited to this, and may have another configuration such as a block-shaped member.
　・上記実施形態では、ノイズ低減部材８１は、ターミナル挿入口５１，５２を通過可能な形状とされるとしたが、これに限定されず、ターミナル挿入口５１，５２を通過不能な形状としてもよい。なお、この場合、端子接続部２３ａ，２４ａをターミナル挿入口５１，５２に通しつつノイズ低減部材８１にも通すといった組み付けを行う必要がある。 In the above embodiment, the noise reduction member 81 has a shape that can pass through the terminal insertion ports 51 and 52, but is not limited thereto, and may have a shape that cannot pass through the terminal insertion ports 51 and 52. . In this case, it is necessary to assemble the terminal connecting portions 23a and 24a so that the terminal connecting portions 23a and 24a also pass through the noise reduction member 81 while passing through the terminal insertion openings 51 and 52.
　・本開示は、実施例に準拠して記述されたが、本開示は当該実施例や構造に限定されるものではないと理解される。本開示は、様々な変形例や均等範囲内の変形をも包含する。加えて、様々な組み合わせや形態、さらには、それらに一要素のみ、それ以上、あるいはそれ以下、を含む他の組み合わせや形態をも、本開示の範疇や思想範囲に入るものである。 Although the present disclosure has been described based on the embodiments, it is understood that the present disclosure is not limited to the embodiments and the structure. The present disclosure also encompasses various modifications and variations within an equivalent range. In addition, various combinations and forms, and other combinations and forms including only one element, more or less, are also included in the scope and spirit of the present disclosure.

Claims (9)

  1. 　内側に回転子（１１）を収容した有底筒状のヨークハウジング（１２）と、
    　前記回転子に給電するための給電ブラシ（２２）及び前記給電ブラシに電気的に接続された給電ターミナル（２３，２４）を保持し前記ヨークハウジングの開口部に嵌入されたブラシホルダ（２１）と、
    　前記給電ターミナルの先端部が挿入された基板収容凹部（４６）を有するとともに、前記回転子の回転を減速する減速機構（３１）を収容し前記ヨークハウジングの開口部に連結されたハウジングケース（４１）と、
    　前記基板収容凹部の内部で前記給電ターミナルに電気的に接続される端子（７３，７４）を有し前記基板収容凹部に収容された回路基板（７２）と
    を備え、
    　前記給電ターミナルは、直線的に延び前記基板収容凹部に配置される端子接続部（２３ａ，２４ａ）を有し、
    　前記端子は、前記端子接続部の延びる方向に対して交差する方向から前記端子接続部に電気的に接続された二股端子であり、
    　前記端子接続部において前記端子が接続される端子接続位置（２３ｂ，２４ｂ）よりも基端側の部位は、ノイズを低減するためのノイズ低減部材（８１，８２，９１）に覆われたモータ。     A bottomed cylindrical yoke housing (12) containing a rotor (11) inside;
    A brush holder (21) for holding a power supply brush (22) for supplying power to the rotor and power supply terminals (23, 24) electrically connected to the power supply brush, and fitted into an opening of the yoke housing; ,
    A housing case (41) having a substrate housing recess (46) into which the tip end of the power supply terminal is inserted, and housing a reduction mechanism (31) for reducing the rotation of the rotor and connected to an opening of the yoke housing. )When,
    A circuit board (72) having terminals (73, 74) electrically connected to the power supply terminal inside the board housing recess and housed in the board housing recess;
    The power supply terminal has a terminal connection portion (23a, 24a) that extends linearly and is disposed in the substrate receiving recess.
    The terminal is a forked terminal that is electrically connected to the terminal connection portion from a direction crossing a direction in which the terminal connection portion extends,
    A motor in which a portion of the terminal connection portion closer to a base end than a terminal connection position (23b, 24b) to which the terminal is connected is covered with a noise reduction member (81, 82, 91) for reducing noise.
  2. 　前記ノイズ低減部材（８１，８２，９１）は、前記端子接続部が撓むことを許容しつつ該端子接続部を覆う請求項１に記載のモータ。 The motor according to claim 1, wherein the noise reduction member (81, 82, 91) covers the terminal connection portion while allowing the terminal connection portion to bend.
  3. 　前記ノイズ低減部材（８１）は、弾性を有して前記端子接続部に密着して設けられるものである請求項２に記載のモータ。 The motor according to claim 2, wherein the noise reduction member (81) has elasticity and is provided in close contact with the terminal connection portion.
  4. 　前記ノイズ低減部材は、ノイズ吸収材料とゴム材料とが混合されたゴム製の部材である請求項３に記載のモータ。 The motor according to claim 3, wherein the noise reduction member is a rubber member in which a noise absorbing material and a rubber material are mixed.
  5. 　前記端子接続部は、二つの端子接続部のうちの一方であり、
    　前記ノイズ低減部材（９１）は、並設される前記端子接続部同士の間に設けられて相互インダクタンス及びキャパシタンスを増加させるための回路構成部材である請求項１～３の何れか１項に記載のモータ。     The terminal connection is one of two terminal connections,
    4. The noise reduction member (91) according to claim 1, wherein the noise reduction member (91) is a circuit component member provided between the terminal connection portions arranged in parallel to increase mutual inductance and capacitance. Motor.
  6. 　前記回路構成部材は、屈曲した金属板材よりなる請求項５に記載のモータ。 The motor according to claim 5, wherein the circuit component is made of a bent metal plate.
  7. 　前記回路構成部材は、前記端子接続部が圧入可能な圧入部（９１ａ）を有する請求項５又は６に記載のモータ。 The motor according to claim 5 or 6, wherein the circuit component has a press-fit portion (91a) into which the terminal connection portion can be press-fitted.
  8. 　前記ハウジングケースは、前記端子接続部の延びる方向と同方向に貫通して前記端子接続部が挿通されるターミナル挿入口（５１，５２）を有し、
    　前記ノイズ低減部材（８１，９１）は、前記ターミナル挿入口を通過可能な形状に設けられた請求項１～７の何れか１項に記載のモータ。     The housing case has a terminal insertion opening (51, 52) through which the terminal connection portion is inserted in the same direction as the direction in which the terminal connection portion extends,
    The motor according to any one of claims 1 to 7, wherein the noise reduction member (81, 91) is provided in a shape capable of passing through the terminal insertion port.
  9. 　前記ノイズ低減部材（８２）は、前記基板収容凹部に固定され、前記端子接続部と隙間（Ｓ）を有して設けられるものである請求項２に記載のモータ。 The motor according to claim 2, wherein the noise reduction member (82) is fixed to the substrate housing recess and provided with a gap (S) with the terminal connection portion.
PCT/JP2019/024044 2018-06-20 2019-06-18 Motor WO2019244873A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201980039665.4A CN112368916A (en) 2018-06-20 2019-06-18 Motor
DE112019003112.0T DE112019003112T5 (en) 2018-06-20 2019-06-18 engine
US17/050,589 US11228230B2 (en) 2018-06-20 2019-06-18 Motor

Applications Claiming Priority (4)

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JP2018-117191 2018-06-20
JP2018117191 2018-06-20
JP2018218277A JP2020005487A (en) 2018-06-20 2018-11-21 motor
JP2018-218277 2018-11-21

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WO2019244873A1 true WO2019244873A1 (en) 2019-12-26

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5567668U (en) * 1978-10-31 1980-05-09

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5567668U (en) * 1978-10-31 1980-05-09

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