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WO2018194147A1 - Moteur d'essuie-glace - Google Patents

Moteur d'essuie-glace Download PDF

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Publication number
WO2018194147A1
WO2018194147A1 PCT/JP2018/016222 JP2018016222W WO2018194147A1 WO 2018194147 A1 WO2018194147 A1 WO 2018194147A1 JP 2018016222 W JP2018016222 W JP 2018016222W WO 2018194147 A1 WO2018194147 A1 WO 2018194147A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
wiper motor
ground line
ground
line
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2018/016222
Other languages
English (en)
Japanese (ja)
Inventor
志賀　彰
大城　昭郎
祐士 永田
光明 大山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Denso Corp
Original Assignee
Denso Corp
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 JP2018060588A external-priority patent/JP7056305B2/ja
Application filed by Denso Corp filed Critical Denso Corp
Priority to US16/606,269 priority Critical patent/US11563356B2/en
Priority to CN201880026022.1A priority patent/CN110537317B/zh
Priority to DE112018002100.9T priority patent/DE112018002100T5/de
Publication of WO2018194147A1 publication Critical patent/WO2018194147A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/02—Cleaning windscreens, windows or optical devices
    • B60S1/04—Wipers or the like, e.g. scrapers
    • 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

Definitions

  • This disclosure relates to a wiper motor.
  • FIG. 8 is a schematic view showing a general wiper motor 100.
  • the wiper motor 100 is a deceleration that reduces the rotational speed of the rotating shaft by the motor unit 120 in which the stator and the rotor are housed and the worm gear mechanism provided at the end of the rotating shaft of the rotor. Part 130.
  • the stator and rotor of the motor unit 120 are provided in a yoke 122 made of aluminum die casting or the like.
  • the yoke 122 has a substantially cylindrical shape with a hollow inside, and houses the stator and the rotor in the internal space.
  • the speed reduction unit 130 includes the above-described worm gear mechanism housed in an aluminum die-cast housing 132, and the housing 132 and the worm gear mechanism are covered with a resin housing cover 134.
  • the housing cover 134 is provided with a connector 136, and electric power for rotating the wiper motor 100 is supplied via the connector 136.
  • FIG. 9 is a block diagram showing an example of the electrical configuration of the wiper motor 100.
  • the connector 136 is supplied with a high terminal 136H that is supplied with electric power for rotating the wiper motor 100 at a high speed, and with a voltage lower than that of the high terminal 136H in order to rotate the wiper motor 100 at a lower speed than the aforementioned high speed rotation.
  • a ground terminal 136N electrically connected to the negative terminal 140N of the brush 140 of the wiper motor 100 through a housing 132 and a yoke 122 made of aluminum die casting.
  • the electrical connection from the negative electrode terminal 140N to the grounding region is performed via the housing 132 of the wiper motor 100, and the structure of the wiper motor 100 can be simplified.
  • the power supplied from the high terminal 136H is supplied to the commutator 142 via the choke coil 138H that removes the high-frequency component that becomes noise and the positive terminal 140H of the brush 140.
  • the electric power supplied from the Low terminal 136L is supplied to the commutator 142 via the choke coil 138L that removes the high-frequency component that becomes noise and the positive terminal 140L of the brush 140.
  • the motor unit 120 includes a rotor and a stator, which are not shown in FIG.
  • a high-frequency noise component is generated by the rotation of the wiper motor 100.
  • the noise component passes through the yoke 122 and the housing 132 from the negative electrode terminal 140N of the brush 140 as indicated by a broken line 160.
  • the noise prevention capacitors 146 and 148 do not pass direct current but pass alternating current. Therefore, a noise component whose potential changes at high frequency is guided to the choke coil 138L via the capacitor 148. The noise component can also be guided to the choke coil 138H via the yoke 122, the housing 132, and the noise prevention capacitor 146.
  • the choke coils 138H and 138L are high-inductance elements and exhibit high impedance with respect to high-frequency noise components, so that the noise components are blocked by the choke coils 138H and 138L. Even if the noise components in the choke coils 138H and 138L are not sufficiently cut off, the noise components are supplied to the wiper motor 100 via the positive terminals 140H and 140L and consumed together with the electric power for rotating the wiper motor 100. .
  • the electrical connection between the energization path indicated by the broken line 160 and the capacitor 146 is detoured, and the high frequency noise component is not the capacitor 146 but the broken line 160 in FIG. 8.
  • the noise component is not effectively consumed and the noise component is easily diffused through the yoke 122 and the housing 132.
  • a shield for suppressing the emission of the noise component is required for the yoke 122 and the housing 132 separately.
  • Japanese Patent Laid-Open No. 2003-134722 discloses an invention of a wiper motor in which conduction of a noise component housing or the like is cut off by connecting a negative electrode terminal of a brush and a ground terminal of a connector with a lead wire.
  • the present disclosure provides a wiper motor that can effectively block a noise component generated with the rotation of the wiper motor and that can easily implement a configuration that blocks the noise component.
  • a first aspect of the present disclosure includes a conductive housing that houses a speed reduction mechanism, a power supply terminal that is housed in a yoke that is coupled to the housing, and that supplies power to a rotor in contact with a commutator, and one end of the power supply terminal
  • a motor body having a brush having a ground terminal connected to a conductive partition wall of the housing and contacting the commutator and the other end covering the opening of the yoke; and a choke coil for noise removal at the power supply terminal
  • the ground terminal connected to the partition wall of the housing electrically connects the negative electrode terminal of the brush to the ground area via the yoke and the housing, and connects the ground line and the power supply line.
  • High-frequency noise components flowing from the negative electrode terminal of the brush can be effectively guided to the choke coil for noise removal via the capacitor, and as a result, the noise components generated with the rotation of the wiper motor can be effectively blocked. .
  • a second aspect of the present disclosure is the wiper motor according to the first aspect, wherein the ground line is further connected to an inner wall of the housing between one end of the capacitor and a ground region.
  • the grounding line is further connected to the inner wall of the housing between the one end of the capacitor and the grounding region, so that the noise component that has entered the housing can be effectively guided to the capacitor. As a result, it is possible to effectively block a noise component generated with the rotation of the wiper motor.
  • the portions of the ground line connected to the partition and the inner wall of the housing have conductivity and elasticity, and the partition and the inner wall of the housing The wiper motor is in contact with each other and is electrically connected to the housing.
  • the connecting portion connected to the partition wall of the ground line and the inner wall of the housing for example, made of metal having elasticity, the electrical connection between the ground line and the housing can be easily performed. Can do.
  • a conductive housing that houses a speed reduction mechanism, a power supply terminal that is housed in a yoke that is coupled to the housing, and that supplies power to a rotor in contact with a commutator and one end of the power supply terminal
  • a motor main body having a brush having a ground terminal connected to a conductive partition wall of the housing, the other end of which contacts the commutator and covers the opening of the yoke, and a bearing of the rotating shaft of the motor main body are held.
  • the wiper motor further includes a bulge provided in the partition, a power supply line for supplying power to the power supply terminal, and a ground line for connecting the bulge to the ground region.
  • the fourth aspect by connecting the ground line to the bulge portion provided in the partition wall to which the ground terminal of the brush is connected, it is possible to reduce the distance that the noise component flows through the housing. Radiation of components to the outside world is suppressed.
  • the bulge portion includes a lip portion that sandwiches and locks a plate-like terminal, and one end of the ground line is locked to the lip portion.
  • This is a wiper motor that is formed as described above.
  • one end of the ground line is locked to the lip portion, so that the electrical connection between the ground line and the partition wall is ensured.
  • one end of the ground line is deformed in a direction intersecting an assembly direction of the housing cover with respect to the housing, and contacts an inner side surface of the lip portion.
  • the electrical connection between the ground line and the partition wall is ensured by contacting the inner surface of the lip portion while stress is applied to one end of the ground line and deforms.
  • a seventh aspect of the present disclosure is the wiper motor according to the fifth or sixth aspect, wherein one end of the grounding line is bent so that a tip portion contacts an inner surface of the lip portion.
  • the electrical connection between the ground line and the partition wall is ensured by bending the tip of one end of the ground line so as to contact the inner surface of the lip portion.
  • the eighth aspect of the present disclosure is the wiper motor according to the fourth or fifth aspect, wherein one end of the ground line is formed so as to sandwich a side surface of the bulge portion.
  • one end of the ground line sandwiches the bulge portion, so that the electrical connection between the ground line and the partition wall is ensured.
  • a ninth aspect of the present disclosure is the wiper motor according to the fourth aspect, wherein the bulge portion includes a protrusion, and one end of the ground line is formed so as to contact a top portion and a side surface of the protrusion. It is.
  • one end of the ground line comes into contact with the top and side surfaces of the protruding portion of the bulge, so that the electrical connection between the ground line and the partition wall is ensured.
  • a tenth aspect of the present disclosure is the wiper motor according to the ninth aspect, wherein one end of the ground line is formed so as to be in contact with a part of the top of the protrusion and the side surface of the one.
  • the one end of the ground line is in contact with a part of the top of the protrusion and the side surface of the one, so that the electrical connection between the ground line and the partition wall is ensured.
  • the protrusion in the ninth or tenth aspect, includes a groove at the top, and one end of the ground line is formed so as to contact a side surface of the groove. It is a wiper motor.
  • the electrical connection between the ground line and the partition wall is ensured.
  • FIG. 11B is a cross-sectional view of the housing combined with the housing cover, taken along line AA in FIG. 11A.
  • FIG. 12B is a cross-sectional view of the housing combined with the housing cover, taken along line BB in FIG. 12A. It is a perspective view at the time of combining a housing cover with the housing of the wiper motor concerning a 5th embodiment of this indication.
  • FIG. 13B is a cross-sectional view of the housing combined with the housing cover, taken along line CC in FIG. 13A. It is a perspective view at the time of combining a housing cover with the housing of the wiper motor concerning a 6th embodiment of this indication.
  • FIG. 12B is a cross-sectional view of the housing combined with the housing cover, taken along line BB in FIG. 12A. It is a perspective view at the time of combining a housing cover with the housing of the wiper motor concerning a 5th embodiment of this indication.
  • FIG. 13B is a cross-sectional view of the housing combined with the housing cover, taken along line CC in FIG. 13A. It is a perspective view at the time of combining a housing cover with the
  • FIG. 14B is a cross-sectional view of the housing combined with the housing cover, taken along line DD in FIG. 14A. It is a perspective view at the time of combining a housing cover with the housing of the wiper motor concerning the 1st modification of this indication.
  • FIG. 15B is a cross-sectional view of the housing combined with the housing cover, cut along line EE in FIG. 15A. It is a perspective view at the time of combining a housing cover with the housing of the wiper motor concerning the 2nd modification of this indication.
  • FIG. 16B is a cross-sectional view of the housing combined with the housing cover, taken along line FF in FIG. 16A.
  • FIG. 18B is a cross-sectional view of the housing combined with the housing cover, cut along line GG in FIG. 17A.
  • FIG. 1 is a block diagram showing an example of an electrical configuration of a wiper motor 10 according to the present embodiment.
  • the wiper motor 10 is a deceleration that reduces the rotational speed of the rotating shaft by a motor unit 20 in which a stator and a rotor are housed and a worm gear mechanism provided at the end of the rotating shaft of the rotor. Part 30.
  • the stator and rotor of the motor unit 120 are provided in a yoke 22 made of aluminum die casting or the like.
  • the yoke 22 has a substantially cylindrical shape with a hollow inside, and houses the stator and the rotor in the internal space.
  • the speed reduction unit 30 includes the above-described worm gear mechanism housed in an aluminum die-cast housing 32, and the housing 32 and the worm gear mechanism are covered with a resin housing cover 34.
  • the connector 36 is supplied with a high terminal 36H that is supplied with electric power for rotating the wiper motor 10 at a high speed, and with a voltage lower than that of the high terminal 36H in order to rotate the wiper motor 10 at a lower speed than the high speed rotation described above. And a ground terminal 36 ⁇ / b> N electrically connected to the negative terminal 40 ⁇ / b> N of the brush 40 of the wiper motor 10.
  • the electric power supplied from the high terminal 36H is supplied to the commutator 42 via the high voltage line 56 and the choke coil 38H that removes high-frequency components that become noise and the positive terminal 40H of the brush 40.
  • the electric power supplied from the Low terminal 36L is supplied to the commutator 42 via the low voltage line 58 via the choke coil 38L that removes high-frequency components that become noise and the positive terminal 40L of the brush 40.
  • Each of the high voltage line 56 and the low voltage line 58 is connected to the positive terminals 40H and 40L through an opening 80 provided in the partition wall 50 that separates the motor unit 20 and the speed reduction unit 30.
  • the motor unit 20 includes a rotor and a stator, which are not shown in FIG.
  • the partition wall 50 is configured integrally with the housing 32 and is a part that covers the opening of the housing 32 in a state where the yoke 22 and the housing 32 are coupled.
  • the connector 36 may have one positive charge terminal, one brush positive terminal, and one choke coil.
  • the ground terminal 36N is a terminal connected to the ground area on the vehicle side.
  • a ground line 54 a conductive partition wall 50 made of aluminum die casting, a second connection terminal 52C, a breaker 52B, and the like. And electrically connected to the negative terminal 40N of the brush 40 through the first connection terminal 52A.
  • the ground line 54 is connected to the partition wall 50 at the end 54A, and connects the ground terminal 36N, the partition wall 50 shown by the broken line 60, the first connection terminal 52C, the breaker 52B, the first connection terminal 52A, and the negative electrode terminal 40N of the brush 40. Connect electrically.
  • the breaker 52 ⁇ / b> B is a device that prevents the damage to the wiper motor 10 and a circuit related to the wiper motor 10 by opening an electric circuit when the current (motor current) of the coil of the wiper motor 10 becomes excessive.
  • the ground line 54 and the high voltage line 56 are connected by a capacitor 46 for preventing noise.
  • the ground line 54 and the low voltage line 58 are connected by a capacitor 48 for noise prevention.
  • One end of the capacitor 46 is connected between the choke coil 38H of the high voltage line 56 and the High terminal 36H of the connector 36, and the other end is connected between the end 54A of the ground line 54 and the ground terminal 36N of the connector 36.
  • the capacitor 48 has one end connected between the choke coil 38L of the low voltage line 58 and the low terminal 36L of the connector 36, and the other end connected between the end 54A of the ground line 54 and the ground terminal 36N of the connector 36. Connected between.
  • the high-frequency noise component is generated by the rotation of the wiper motor 10.
  • the noise component passes from the negative terminal 40N of the brush 40 through the first connection terminal 52A, the breaker 52B, and the second connection terminal 52C, and is shown by a broken line 60 in FIG.
  • the partition 50 passes through the ground line 54 from the end 54A.
  • the noise preventing capacitors 46 and 48 do not pass direct current but pass alternating current. Therefore, a noise component whose potential changes at high frequency is guided to the choke coil 38H via the capacitor 46. The noise component can also be guided to the choke coil 38L via the capacitor 48.
  • the choke coils 38H and 38L are high-inductance elements and exhibit high impedance with respect to high-frequency noise components, so that the noise components are blocked by the choke coils 38H and 38L. Even if the noise components in the choke coils 38H and 38L are not sufficiently blocked, the noise components are supplied to the wiper motor 10 via the positive terminals 40H and 40L, and are consumed together with the electric power for rotating the wiper motor 10. .
  • the noise component is conducted to the ground line 54 via the first connection terminal 52A, the breaker 52B, and the second connection terminal 52C.
  • the distance that the noise component conducts through the partition wall 50 that is a part of the housing 32 of the wiper motor 10 is shorter than that of the wiper motor 100 shown in FIG. 9.
  • noise components are more likely to pass through the noise preventing capacitors 46 and 48 via the first connection terminal 52A, the breaker 52B, the second connection terminal 52C, and the ground line 54, so that the noise component is more noise than the wiper motor 100 shown in FIG. Effective in reducing components.
  • FIG. 2 is an example of a schematic diagram of the speed reduction unit 30 with the housing cover 34 of the wiper motor 10 according to the present embodiment removed.
  • the housing cover 34 is coupled to the housing 32 by a fixing member such as a fixing bolt 68 and covers the inside of the housing 32.
  • a worm wheel 74 that decelerates the rotational speed of the wiper motor 10 is housed inside the housing 32 of the speed reducing unit 30 with the housing cover 34 removed.
  • a circuit including the high terminal 36H and the high voltage line 56, the low terminal 36L and the low voltage line 58, the ground terminal 36N and the ground line 54, and the capacitors 46 and 48 is configured to straddle the worm wheel 74.
  • Each of the high voltage line 56, the low voltage line 58, and the ground line 54 shown in FIG. 2 is formed of a rigid metal wire or metal plate.
  • the high voltage line 56 and the low voltage line 58 are connected to the positive terminals 40H and 40L of the brush 40 through openings provided in the partition wall 50, respectively. Since the partition 50 is conductive, the high voltage line 56 and the low voltage line 58 pass through the opening of the partition 50 while being covered with the insulating member 76.
  • the ground line 54 is electrically connected to the partition wall 50 by the end 54A.
  • the ground line 54 has electrical conductivity and elasticity at the end 54A, and may be electrically connected by the end 54A coming into contact with the partition wall 50. However, in order to ensure the connection, a bolt or the like is used.
  • the end 54A may be fixed to the partition wall 50 using a fixing member.
  • FIG. 3 is an example of a schematic diagram when the speed reduction unit 30 of the wiper motor 10 according to the present embodiment is viewed from the direction of arrow A in FIG.
  • FIG. 3 shows a state where the yoke 22, the rotor and the stator are removed, and the configuration of the brush 40 is shown.
  • an output shaft 78 provided coaxially with the worm wheel 74 of the speed reduction unit 30 is shown.
  • a link mechanism or the like of the wiper device is connected to the end of the output shaft 78.
  • the positive terminals 40H and 40L and the negative terminal 40N constituting the brush 40 are in contact with a commutator 42 (not shown) of the wiper motor 10 to supply power to the rotor.
  • the first connection terminal 52A is connected to the negative terminal 40N.
  • the first connection terminal 52A is connected to the breaker 52B.
  • the breaker 52B is connected to the partition wall 50 via the second connection terminal 52C.
  • FIG. 4 is a schematic diagram showing the wiper motor 10 according to the present embodiment.
  • the noise component generated by the rotation of the wiper motor 10 partially flows to the ground terminal 36N side via the ground line 54 as shown by a broken line 62 in FIG. Through the choke coil 38L. As a result, the noise component is effectively consumed, and the emission of the noise component to the outside world is suppressed.
  • the partition wall 50 is made to be a noise component by disposing the circuit for electrically connecting the connector 36 and the brush 40 including the capacitors 46 and 48 for preventing noise. Is reduced, and the noise component is led to the noise prevention capacitors 46 and 48, whereby the emission of the noise component to the outside is suppressed.
  • the wiper motor 12 according to the present embodiment is different from the first embodiment in that a third connection terminal 70 is provided, but other configurations are the same as those in the first embodiment. Since it is the same as the form, detailed description of other configurations is omitted.
  • the third connection terminal 70 has one end connected between the other end of the capacitor 48 of the ground line 54 and the ground terminal 36N of the connector 36 and the other end electrically connected to the inner wall of the housing 32. Connected. As a result, the noise component flows from the negative terminal 40N of the brush 40 to the third connection terminal 70 through the partition 50 and the path of the housing 32 indicated by the broken line 66. Similar to the first embodiment, the noise component also flows to the end portion 54A of the ground line 54 through the path of the partition wall 50 indicated by the broken line 60. As a result, the noise component is exhausted through the choke coils 38H and 38L via the capacitors 46 and 48. Alternatively, part of the noise component is guided to the ground area of the vehicle via the ground terminal 36N.
  • the distance that the noise component conducts through the structure (partition wall 50) of the wiper motor 10 becomes longer.
  • the third connection terminal 70 allows the noise prevention capacitor 46 to be connected. , 48 are connected to the ground line 54, so that noise components easily flow.
  • FIG. 6 is a schematic diagram showing the wiper motor 10 according to the present embodiment.
  • the noise component generated by the rotation of the wiper motor 12 partially flows to the ground terminal 136N side through the housing 32 as shown by the broken line 66 in FIG. 6, but the remaining noise component is shown by the broken line 72, for example. In this way, it is guided to the choke coil 38L through the capacitor 48. As a result, the noise component is effectively consumed, and the emission of the noise component to the outside world is suppressed.
  • the portion of the third connection terminal 70 that is connected to the inner wall of the housing 32 has conductivity and elasticity, and may be configured to contact the inner wall of the housing 32 and be electrically connected to the housing.
  • the third connection terminal 70 may be fixed to the inner wall of the housing 32 with a fixing member such as a bolt.
  • FIG. 7 is a graph showing an example of the radiation noise reduction effect of the present embodiment (Act 2) and the first embodiment (Act 1). As shown in FIG. 7, this embodiment has the most remarkable noise reduction effect from low frequency components to high frequency components.
  • a circuit that electrically connects the connector 36 and the brush 40 including the capacitors 46 and 48 for preventing noise is disposed, and the housing is formed by the third connection terminal 70.
  • the wiper motor includes a ground line 254, a high voltage line 256, and a low voltage line 258 inside the resin housing cover 234 (on the side that houses the reduction mechanism of the wiper motor). It is arranged.
  • One end 256H1 of the high voltage line 256 is connected to the High terminal 36H (see FIG. 2) of the connector 36, and one end 258L1 of the low voltage line 258 is connected to the Low terminal 36L (see FIG. 2) of the connector 36.
  • one end 254N1 of the ground line 254 is connected to the ground terminal 36N of the connector 36 and is disposed up to the fixing bolt contact 170.
  • the fixing bolt contact 170 is in contact with the fixing bolt 68 when the housing cover 234 is coupled to the housing, so that the ground line 254 and the housing are electrically connected via the fixing bolt 68.
  • the other end 256H2 of the high voltage line 256 and the other end 258L2 of the low voltage line 258 form a protruding terminal so as to be electrically connected to the positive terminals 40H and 40L of the brush 40.
  • the other end 254N2 of the grounding line 254 is a bulge-shaped part (hereinafter referred to as “hereinafter,“ This terminal is electrically connected to the bulge.
  • FIG. 11A is a perspective view when the housing cover 234 is coupled to the housing 232 of the wiper motor according to the present embodiment
  • FIG. 11B illustrates the housing 232 coupled with the housing cover 234 along the line AA in FIG. 11A. It is sectional drawing at the time of cut
  • the other end 254N2 of the ground line 254 contacts the upper end of the bulge 260 that covers the bearing of the rotating shaft of the wiper motor.
  • the bulge 260 is made of aluminum die cast formed integrally with the partition wall 50 of the housing 232, and the negative electrode terminal 40N (see FIG. 3) of the brush 40 is electrically connected thereto.
  • the other end 254N2 of the ground line 254 is electrically connected to a lip 262 provided at the upper end of the bulge 260.
  • the lip 262 includes two thin plate-like members formed in parallel.
  • the housing cover 234 is coupled to the housing 232, the other end 254N2 of the ground line 254 is inserted and locked between the two plate-like members.
  • the tip 266 of the other end 254N2 of the ground line 254 is bent so as to come into contact with the inner surface of the lip 262.
  • the housing cover 234 is coupled to the housing 232 in accordance with the assembly direction ⁇ , it is substantially orthogonal to the assembly direction ⁇ . Bends in the bending direction ⁇ .
  • the side surface portion of the other end 254N2 contacts the plate-like member of the lip 262, and the electrical connection between the other end 254N2 and the lip 262 is ensured.
  • a gap is provided between the bottom of the inner surface of the lip 262 and the tip 266 of the other end 254N2. The gap is for preventing the tip 266 of the other end 254N2 from hitting the inner bottom of the lip 262 and adversely affecting the coupling between the housing 232 and the housing cover 234.
  • the lip 262 is configured as a separate part from the housing 232, and may be fixed to the upper end of the bulge 260 of the housing 232 by electric welding or conductive adhesive.
  • the lip 262 is die-cast together with the bulge 260. It is cast integrally with the housing 232.
  • the lip 262 is cast integrally with the housing 232 by die casting together with the bulge 260 as one protrusion at the upper end of the bulge 260, and after casting, two thin plate-like members are formed by machining. Also good.
  • the negative electrode terminal 40N of the brush 40 is electrically connected to the partition wall 50 cast integrally with the bulge 260, by bringing the other end 254N2 of the ground line 254 into contact with the bulge 260, The ground line 254 can be electrically connected in the vicinity of the negative electrode terminal 40N of the brush 40, and the distance for conducting noise components from the negative electrode terminal 40N of the brush 40 to the ground line 254 via the housing 232 can be shortened. It becomes possible.
  • the distance of the noise component flowing through the housing 232 is shortened compared to the first embodiment and the second embodiment, so that the noise component is transferred to the outside world. Radiation is suppressed.
  • the tip 266 of the other end 254N2 first contacts the inside of the lip 262, and the other end 252N2 extends along the inside of the lip 262.
  • the other end 254N2 serves as an assembly guide for the housing cover 234 to which the ground line 254 is attached.
  • FIG. 12A is a perspective view when the housing cover 234 is coupled to the housing 232 of the wiper motor according to the present embodiment
  • FIG. 12B illustrates the housing 232 coupled with the housing cover 234 along the line BB in FIG. 12A. It is sectional drawing at the time of cut
  • the ground line 254 has the other ends 254N3A and 254N3B, and the other ends 254N3A and 254N3B are in contact with the side portions of the bulge 260, respectively.
  • the other ends 254N3A and 254N3B of the ground line 254 are electrically connected to the bulge 260 so as to sandwich the side surface portion of the bulge 260.
  • the manufacturing cost of the housing 232 compared to the third embodiment. can be reduced.
  • the tip portions 268A and 268B of the other ends 254N3A and 254N3B are spread outward with respect to the bulge 260, and the bulge 260 can be easily sandwiched when the housing cover 234 is assembled to the housing 232. It is like that.
  • the negative electrode terminal 40N of the brush 40 is electrically connected to the partition wall 50 cast integrally with the bulge 260, the other ends 254N3A and 254N3B of the ground line 254 are connected to the side surface portion of the bulge 260.
  • the ground line 254 can be electrically connected in the vicinity of the negative electrode terminal 40N of the brush 40, and the distance through which the noise component is conducted via the housing 232 from the negative electrode terminal 40N of the brush 40 to the ground line 254. Can be shortened.
  • the distance of the noise component flowing through the housing 232 is shortened compared to the first embodiment and the second embodiment, so that the noise component is transferred to the outside world. Radiation is suppressed.
  • the area where the ground line 254 and the housing 232 are in electrical contact can be made larger than in the third embodiment.
  • the ground line 254 and the housing 232 can be reliably connected.
  • the leading ends 268A and 268B of the other ends 254N3A and 254N3B first contact the side surface of the bulge 260, and along the side surface of the bulge 260 Since the other ends 254N3A and 254N3B are attached, the other ends 254N3A and 254N3B serve as an assembly guide for the housing cover 234 to which the ground line 254 is attached.
  • FIG. 13A is a perspective view when the housing cover 234 is coupled to the housing 232 of the wiper motor according to the present embodiment
  • FIG. 13B illustrates the housing 232 coupled with the housing cover 234 along the line CC in FIG. 13A. It is sectional drawing at the time of cut
  • the ground line 254 has the other ends 254N4A, 254N4B, and 254N4C, and the other ends 254N4A and 254N4C are in contact with the side surfaces of the bulge 260, respectively, as in the fourth embodiment.
  • 254N4B is locked to the lip 262 at the upper end of the bulge 260 as in the third embodiment.
  • the negative electrode terminal 40N of the brush 40 is electrically connected to the partition wall 50 cast integrally with the bulge 260, so that the other ends 254N4A, 254N4B, and 254N4C of the ground line 254 contact the bulge 260.
  • the ground line 254 can be electrically connected in the vicinity of the negative electrode terminal 40N of the brush 40, and the distance for conducting the noise component from the negative electrode terminal 40N of the brush 40 to the ground line 254 via the housing 232 is increased. It can be shortened.
  • the distance of the noise component flowing through the housing 232 is shortened compared to the first embodiment and the second embodiment, so that the noise component is transferred to the outside world. Radiation is suppressed.
  • the distal end 266 of the other end 254N4B abuts on the inner side of the lip 262, and the distal ends 268A, 268B of the other ends 254N4A, 254N4C.
  • the other end 254N4A, 254N4B, 254N4C serves as an assembly guide for the housing cover 234 to which the ground line 254 is attached.
  • the other ends 254N4A, 254N4C are brought into contact with each other so as to sandwich the side surface portion of the bulge 260, and the other end 254N4B is engaged with the lip at the upper end portion of the bulge 260, thereby making the ground line more than the fourth embodiment. It is possible to increase the number of places where the 254 and the housing 232 are in electrical contact with each other and increase the area related to the contact, and the ground line 254 and the housing 232 can be reliably connected.
  • FIG. 14A is a perspective view when the housing cover 234 is coupled to the housing 232 of the wiper motor according to the present embodiment
  • FIG. 14B illustrates the housing 232 coupled with the housing cover 234 along the line DD in FIG. 14A. It is sectional drawing at the time of cut
  • the ground line 254 has the other end 254N5, and the other end 254N5 is electrically connected to the upper end 264 that is a protrusion of the bulge 260.
  • the front end portion 270 of the other end 254N5 of the ground line 254 is formed so as to cover the upper end portion 264 of the bulge 260 to ensure electrical connection with the upper end portion 264.
  • the ends 270A and 270B of the tip 270 of the other end 254N5 of the ground line 254 are spread outward with respect to the upper end 264, so that the upper end 264 can be easily sandwiched when the housing cover 234 is assembled to the housing 232. It has become.
  • the negative electrode terminal 40N of the brush 40 is electrically connected to the partition wall 50 cast integrally with the bulge 260, the other end 254N5 of the ground line 254 covers the upper end portion 264 of the bulge 260.
  • the ground line 254 can be electrically connected in the vicinity of the negative electrode terminal 40N of the brush 40, and noise components are conducted through the housing 232 from the negative electrode terminal 40N of the brush 40 to the ground line 254. It is possible to shorten the distance to be made.
  • the distance of the noise component flowing through the housing 232 is shortened compared to the first embodiment and the second embodiment, so that the noise component is transferred to the outside world. Radiation is suppressed.
  • the tip 270 of the other end 254N5 of the ground line 254 so as to cover the upper end 264 of the bulge 260, the ground line 254 and the housing 232 can be reliably connected.
  • the manufacturing cost of the housing 232 can be reduced as compared with the third embodiment.
  • the distal ends 270A and 270B of the distal end portion 270 of the other end 254N5 of the ground line 254 are spread outward with respect to the upper end portion 264, and when the housing 232 and the housing cover 234 are coupled. Since the ends 270A and 270B of the tip 270 of the other end 254N5 of the ground line 254 first contact the upper end 264, the other end 254N5 serves as an assembly guide for the housing cover 234 to which the ground line 254 is attached.
  • FIG. 15A is a perspective view when the housing cover 234 is coupled to the housing 232 of the wiper motor according to this modification
  • FIG. 15B is a diagram illustrating the housing 232 coupled with the housing cover 234 along the line EE in FIG. 15A. It is sectional drawing at the time of cut
  • the ground line 254 has the other end 254N6, and the other end 254N6 is electrically connected to the upper end 264 of the bulge 260.
  • the tip portion 272 of the other end 254N6 of the ground line 254 has end portions 272A and 272B that spread outward with respect to the upper end portion 264 of the bulge 260 similarly to the sixth embodiment, and covers the upper end portion 264,
  • the terminal 272 ⁇ / b> C contacts the side surface of the recess (groove) of the upper end 264, thereby ensuring electrical connection with the bulge 260.
  • the end 272C is bent so as to come into contact with the side surface of the concave portion of the upper end 264.
  • the housing cover 234 is coupled to the housing 232 according to the assembling direction ⁇
  • the end 272C is bent in the bending direction ⁇ substantially orthogonal to the assembling direction ⁇ . Bend.
  • the side surface portion of the end 272 ⁇ / b> C contacts the side surface portion of the recess of the upper end portion 264.
  • the tip 272 of the other end 254N6 of the ground line 254 is connected to the upper end of the bulge 260.
  • the ground line 254 can be electrically connected in the vicinity of the negative electrode terminal 40N of the brush 40 by contacting the side surfaces of the concave portions of the portion 264 and the upper end 264. From the negative terminal 40N of the brush 40 to the ground line 254 The distance through which the noise component is conducted through the housing 232 can be shortened.
  • the distance of the noise component flowing through the housing 232 is shortened compared to the first embodiment and the second embodiment, so that the noise component is transferred to the outside world. Radiation is suppressed.
  • tip end portion 272 of the other end 254N6 of the ground line 254 is formed so as to cover the upper end portion 264 of the bulge 260 and is formed so as to be in contact with the side surface portion of the concave portion of the upper end portion 264.
  • the housing 232 can be more reliably connected than in the sixth embodiment.
  • the manufacturing cost of the housing 232 can be reduced as compared with the third embodiment.
  • the ends 272A and 272B of the tip 272 of the other end 254N6 of the ground line 254 are spread outward with respect to the upper end 264, and when the housing 232 and the housing cover 234 are joined together. Since the ends 272A and 272B of the tip 272 of the other end 254N6 of the ground line 254 first contact the upper end 264, the other end 254N6 serves as an assembly guide for the housing cover 234 to which the ground line 254 is attached.
  • FIG. 16A is a perspective view when the housing cover 234 is coupled to the housing 232 of the wiper motor according to this modification
  • FIG. 16B illustrates the housing 232 coupled with the housing cover 234 along the line FF in FIG. 16A. It is sectional drawing at the time of cut
  • the ground line 254 has the other end 254N7A, and the tip 274A of the other end 254N7A is formed so as to cover one side surface and a part of the top of the upper end 264 of the bulge 260. 260 is electrically connected.
  • the distal end 274A of the other end 254N7A extends outward with respect to the upper end 264 of the bulge 260 and facilitates contact between the upper end 264 and the distal end 274A when the housing cover 234 is assembled to the housing 232. . Further, the tip 274A of the other end 254N7A bends in a bending direction ⁇ substantially perpendicular to the assembling direction ⁇ when the housing cover 234 is coupled to the housing 232 according to the assembling direction ⁇ . As a result, the tip 274A of the other end 254N7A is pressed against the top of the upper end 264, and the electrical connection between the other end 254N7A and the upper end 264 is ensured.
  • FIGS. 17A and 17B This modification may be an embodiment as shown in FIGS. 17A and 17B.
  • 17A is a perspective view when the housing cover 234 is coupled to the housing 232 of the wiper motor according to another aspect of the present modification
  • FIG. 17B is a perspective view of the housing 232 coupled with the housing cover 234 shown in FIG.
  • FIG. 10 is a cross-sectional view taken along the line G.
  • the ground line 254 has the other end 254N7B, and the tip 274B of the other end 254N7B is different from the case of FIGS. 16A and 16B in one side and top of the upper end 264 of the bulge 260. It is formed so as to cover the part and is electrically connected to the bulge 260.
  • the other end of the ground line 254 may be formed so as to cover one side surface and a part of the top portion of the upper end portion 264 and to be in contact with the side surface portion of the recess (groove portion) of the upper end portion 264. .
  • the negative electrode terminal 40N of the brush 40 is electrically connected to the partition wall 50 cast integrally with the bulge 260
  • the other end 254N7A or the other end 254N7B of the ground line 254 is connected to the upper end of the bulge 260.
  • the ground line 254 can be electrically connected in the vicinity of the negative terminal 40N of the brush 40, and noise components are transmitted from the negative terminal 40N of the brush 40 to the ground line 254 via the housing 232. It is possible to shorten the distance of conduction.
  • the distance of the noise component flowing through the housing 232 is shortened compared to the first embodiment and the second embodiment, so that the noise component is transferred to the outside world. Radiation is suppressed.
  • the manufacturing cost of the housing 232 can be reduced as compared with the third embodiment.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

La présente invention concerne un moteur d'essuie-glace comprenant : un boîtier conducteur dans lequel est logé un mécanisme de décélération ; un corps de moteur logé dans une culasse reliée au boîtier et équipé d'une brosse possédant une borne d'alimentation électrique qui entre en contact avec un commutateur afin d'alimenter en énergie un rotor et d'une borne de masse qui possède une extrémité en contact avec le commutateur et l'autre extrémité connectée à une cloison conductrice du boîtier, ladite cloison recouvrant une partie d'ouverture de la culasse ; une ligne d'alimentation électrique permettant d'alimenter en énergie la borne d'alimentation électrique par l'intermédiaire d'une bobine d'arrêt permettant d'éliminer le bruit ; une ligne de masse permettant de connecter la cloison et une région de masse l'une à l'autre ; et un condensateur connectant la ligne d'alimentation électrique et la ligne de masse l'une à l'autre et permettant à un composant de bruit circulant à travers la ligne de masse de passer par la bobine d'arrêt.
PCT/JP2018/016222 2017-04-20 2018-04-19 Moteur d'essuie-glace Ceased WO2018194147A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US16/606,269 US11563356B2 (en) 2017-04-20 2018-04-19 Wiper motor
CN201880026022.1A CN110537317B (zh) 2017-04-20 2018-04-19 雨刮器电动机
DE112018002100.9T DE112018002100T5 (de) 2017-04-20 2018-04-19 Wischermotor

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2017084035 2017-04-20
JP2017-084035 2017-04-20
JP2018060588A JP7056305B2 (ja) 2017-04-20 2018-03-27 ワイパモータ
JP2018-060588 2018-03-27

Publications (1)

Publication Number Publication Date
WO2018194147A1 true WO2018194147A1 (fr) 2018-10-25

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Application Number Title Priority Date Filing Date
PCT/JP2018/016222 Ceased WO2018194147A1 (fr) 2017-04-20 2018-04-19 Moteur d'essuie-glace

Country Status (1)

Country Link
WO (1) WO2018194147A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020089019A (ja) * 2018-11-21 2020-06-04 株式会社デンソー ワイパモータ

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0746788A (ja) * 1993-07-28 1995-02-14 Aisin Seiki Co Ltd 電動機
JPH0819207A (ja) * 1994-06-30 1996-01-19 Toshiba Corp 軸接地装置
JP2008099524A (ja) * 2006-10-16 2008-04-24 Mitsuba Corp 減速機構付き電動モータ
JP2014147293A (ja) * 2010-05-27 2014-08-14 Nissan Motor Co Ltd 電動車両用動力伝達装置
WO2017017806A1 (fr) * 2015-07-29 2017-02-02 三菱電機株式会社 Détecteur d'angle de rotation

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0746788A (ja) * 1993-07-28 1995-02-14 Aisin Seiki Co Ltd 電動機
JPH0819207A (ja) * 1994-06-30 1996-01-19 Toshiba Corp 軸接地装置
JP2008099524A (ja) * 2006-10-16 2008-04-24 Mitsuba Corp 減速機構付き電動モータ
JP2014147293A (ja) * 2010-05-27 2014-08-14 Nissan Motor Co Ltd 電動車両用動力伝達装置
WO2017017806A1 (fr) * 2015-07-29 2017-02-02 三菱電機株式会社 Détecteur d'angle de rotation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020089019A (ja) * 2018-11-21 2020-06-04 株式会社デンソー ワイパモータ
JP7035981B2 (ja) 2018-11-21 2022-03-15 株式会社デンソー ワイパモータ

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