JP2018011398A - Brushless Wiper Motor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a brushless wiper motor that is structurally compatible to both right and left sides by eliminating the concepts of a p-type wiper motor and a q-type wire motor.SOLUTION: If the length of the sum of the respective lengths of a motor fixing part 32 and a motor cover 50 along an axial direction of a rotary shaft 64 is L1, the length of a deceleration mechanism accommodating section 31 is L2, and the dimension of a connector coupling part 43 is L3, a formula of L1≤2×L3 and a formula of L2≤2×L1 are satisfied. Accordingly, the length of the brushless wiper motor 20 in the axial direction of the rotary shaft 64 can be shortened using, as a reference, the length L3 of the connector coupling part 43. If the brushless wiper motor 20 is viewed from a direction intersecting the axial direction of the rotary shaft 64, its outline shape becomes similar to the shape that is substantially inscribed in an imaginary square and, therefore, the concepts of p-type and q-type can be eliminated. Accordingly, layout can be remarkably improved and components such as a substrate and a housing 30 can be shared sidewise, making it possible to reduce manufacturing costs and to improve a yield.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a brushless wiper motor that swings a wiper member.

  2. Description of the Related Art Conventionally, a wiper motor equipped with a speed reduction mechanism that can output large power while being small is used as a drive source for a wiper device mounted on a vehicle such as an automobile. Thereby, the mounting property to a vehicle can be improved, and by extension, it can apply from a small vehicle to a large vehicle. As such a wiper motor with a speed reduction mechanism, for example, there is a technique described in Patent Document 1.

  The wiper motor described in Patent Document 1 includes a motor portion and a gear portion. An armature is rotatably accommodated in a yoke forming the motor portion, and a worm is formed in the gear case forming the gear portion. A speed reduction mechanism including a worm wheel is accommodated. The opening of the gear case is closed with a gear cover. The gear cover is integrally provided with a connector connecting portion to which a control board is attached and to which an external connector on the vehicle side is connected. The control board recognizes the wiping position of the wiper member and the rotation speed of the armature, and controls the rotation direction and rotation speed of the armature.

JP 2011-234453 A

  In the wiper motor described in Patent Document 1 described above, an armature and a commutator are arranged in the axial direction of the rotating shaft in order to employ a motor unit with a brush having a plurality of brushes. Therefore, the axial dimension of the motor unit is large, and specifically, the length of the motor unit along the axial direction of the rotating shaft and the length of the gear case are substantially the same length. In other words, based on the length dimension (standard dimension) of the connector connecting portion along the axial direction of the rotating shaft, the axial dimension of the motor portion is approximately three times the length dimension of the connector connecting portion. Thus, the conventional wiper motor has an elongated shape that is long along the axial direction of the rotating shaft and short in the direction intersecting the axial direction of the rotating shaft.

  By the way, in the right-hand drive vehicle and the left-hand drive vehicle, the swinging direction of the wiper member is mirror-image-symmetric on the left and right sides of the vehicle. Therefore, the shape of the mounting space on the vehicle side, the operation direction of the link mechanism forming the wiper device, and the like are also mirror-image symmetric. Therefore, in the conventional elongated wiper motor, the right handle wiper motor (p-type wiper motor) and the left handle wiper motor (q-type wiper motor) are matched to the mirror image symmetrical left and right mounting spaces. ) And had to prepare. Therefore, two types of parts, such as a board and a housing, are required on each of the left and right sides, and the manufacturing cost increases, and the parts management becomes complicated and the yield is poor.

  An object of the present invention is to provide a brushless wiper motor that can correspond to the right side and the left side without the concept of the p-type wiper motor and the q-type wiper motor.

  In one aspect of the present invention, a brushless wiper motor that swings a wiper member, a motor having a rotation shaft, a speed reduction mechanism that reduces the rotation of the rotation shaft, a motor storage portion that stores the motor, and the speed reduction mechanism A housing having a speed reduction mechanism accommodating portion, a cover member on which an opening of the speed reduction mechanism accommodating portion is closed and a substrate for controlling the rotation of the motor is mounted, the cover member is provided, and an external connector is provided A connector connecting portion to be connected, and along the axial direction of the rotating shaft, the length of the motor housing portion is L1, the length of the speed reduction mechanism housing portion is L2, and the connector connecting portion When the length dimension is L3, the expression of L1 ≦ 2 × L3 and the expression of L2 ≦ 2 × L1 are satisfied.

  In another aspect of the present invention, the motor housing portion is provided integrally with the speed reduction mechanism housing portion, and a main body portion having an opening opposite to the speed reduction mechanism housing portion side along the axial direction thereof, and the body portion And a stator that forms the motor is fixed to the main body.

  In another aspect of the present invention, when the length dimension of the main body portion along the axial direction of the rotating shaft is L4, the equation of L4 ≦ L3 is satisfied.

  In another aspect of the present invention, when the length dimension of the main body portion along the axial direction of the rotating shaft is L4, the expression of L3 ≦ L4 is satisfied.

  In another aspect of the present invention, a first conductive member, a second conductive member, and a third conductive member are provided between the substrate and the connector connecting portion, and one end side of each conductive member is the interior of the connector connecting portion. The other end side is connected to the substrate, and one end side of each conductive member is arranged in the order of the first conductive member, the second conductive member, and the third conductive member from the radially outer side of the rotating shaft. Yes.

  In another aspect of the present invention, the first conductive member is connected to a power terminal of the external connector, the second conductive member is connected to a ground terminal of the external connector, and the third conductive member is Are connected to the communication terminals of the external connector.

  In another aspect of the present invention, a corner portion is provided on the side of the connector connection portion away from the rotation axis, an arc portion is provided on the side of the connector connection portion close to the rotation axis, and the connector connection portion An engaging claw with which the engaging portion of the external connector is engaged is provided on the speed reduction mechanism accommodating portion side.

  In another aspect of the present invention, an arc portion is provided on the side of the connector connection portion away from the rotation axis, a corner portion is provided on the side of the connector connection portion close to the rotation axis, and the connector connection portion An engaging claw with which the engaging portion of the external connector is engaged is provided on the side opposite to the speed reduction mechanism accommodating portion side.

  According to the present invention, when the length of the motor housing portion along the axial direction of the rotating shaft is L1, the length of the speed reduction mechanism housing portion is L2, and the length of the connector connecting portion is L3. Since the expression of L1 ≦ 2 × L3 and the expression of L2 ≦ 2 × L1 are satisfied, the length dimension along the axial direction of the rotation axis of the brushless wiper motor is determined based on the length dimension L3 (standard dimension) of the connector connecting portion. , Can be shorter than before.

  When the brushless wiper motor is viewed from the direction intersecting the axial direction of the rotation axis, the outer shape of the brushless wiper motor can be brought close to the shape substantially inscribed inside the virtual square. The conventional p-type wiper motor and q-type wiper motor The concept of a wiper motor can be eliminated. Therefore, the layout can be greatly improved. In addition, components such as a substrate and a housing can be shared on the left and right sides, and manufacturing costs can be reduced and yield can be improved.

  Furthermore, when the shape of the external connector is different between the left and right sides, it is only necessary to change the shape of the connector connecting portion of the cover member. Therefore, an increase in manufacturing cost can be suppressed.

FIG. 3 is a mounting diagram of a brushless wiper motor on a vehicle. It is the top view which looked at the brushless wiper motor from the output-shaft side. It is the top view which looked at the brushless wiper motor from the cover member side. It is a perspective view which shows the internal structure of the deceleration mechanism accommodating part. It is a disassembled perspective view which shows a cover member, a board | substrate, and a board | substrate cover. It is a perspective view which shows the inner side of a cover member. It is a perspective view which shows the back side of a board | substrate. It is A arrow directional view of FIG. (A) is a B arrow view of FIG. 3 which shows the external connector for right handles, (b) is a B arrow view of FIG. 3 which shows the external connector for left handles. It is the elements on larger scale corresponding to the broken-line circle | round | yen C of FIG. 8 which shows the connector connection part corresponding to the external connector for left handles. (A) is a diagram in which a p-type brushless wiper motor is applied to a right-hand drive vehicle, and (b) is a diagram in which a p-type brushless wiper motor is applied to a left-handle vehicle. (A) is the figure which applied q type brushless wiper motor to the right-hand drive vehicle, (b) is the figure which applied q type brushless wiper motor to the left-hand drive vehicle. It is the top view which looked at the brushless wiper motor of Embodiment 2 from the output-shaft side.

  Hereinafter, Embodiment 1 of the present invention will be described in detail with reference to the drawings.

  1 is a plan view of a brushless wiper motor mounted on a vehicle, FIG. 2 is a plan view of the brushless wiper motor viewed from the output shaft side, FIG. 3 is a plan view of the brushless wiper motor viewed from the cover member side, and FIG. FIG. 5 is an exploded perspective view showing the cover member, the substrate, and the substrate cover, FIG. 6 is a perspective view showing the inside of the cover member, and FIG. 7 is a perspective view showing the back side of the substrate. FIG. 8 is a view from the arrow A in FIG. 3, FIG. 9A is a view from the arrow B in FIG. 3 showing the external connector for the right handle, and FIG. FIG. 10 is a partial enlarged view corresponding to a broken line circle C in FIG. 8 showing a connector connecting portion corresponding to an external connector for a left handle, and FIG. 11A is a right handle for a p-type brushless wiper motor. Figure applied to the vehicle, (b) is a p-type brush FIG. 12A is a diagram in which a wiper motor is applied to a left-hand drive vehicle, FIG. 12A is a diagram in which a q-type brushless wiper motor is applied to a right-handle vehicle, and FIG. 12B is a diagram in which a q-type brushless wiper motor is applied to a left-handle vehicle. Show.

  As shown in FIG. 1, a front windshield 11 is provided on the front side of a vehicle 10 such as an automobile. A wiper device 12 that wipes rainwater, dust, and the like attached to the front windshield 11 is mounted on the front end portion of the front windshield 11 of the vehicle 10. The wiper device 12 includes a wiper member 13 that is paired on the driver's seat side (right side in the figure) and the passenger seat side (left side in the figure), and further includes one brushless wiper motor 20. The brushless wiper motor 20 is connected to the base end side of each wiper member 13 via the link mechanism 14, whereby each wiper blade 15 provided on the front end side of each wiper member 13 swings on the front windshield 11. It is driven dynamically. Here, the vehicle 10 shown in FIG. 1 is a right-hand drive vehicle, and the wiper device 12 is disposed in a portion near the driver's seat along the vehicle width direction of the vehicle 10.

  The brushless wiper motor 20 is a forward / reverse rotation type wiper motor (reversing wiper motor) that alternately performs forward rotation and reverse rotation based on a predetermined control logic. Therefore, when the brushless wiper motor 20 repeats forward and reverse rotation as indicated by an arrow R in the figure, the link mechanism 14 is swung in the direction of the arrow S in the figure, and each wiper blade 15 moves on each wiping range 16. A reciprocating wiping operation is performed. Thereby, rainwater, dust, etc. adhering to the front windshield 11 are wiped cleanly.

  As shown in FIGS. 2 to 4, the brushless wiper motor 20 is a wiper motor with a speed reduction mechanism, and includes a housing 30 that houses the motor 60 and the speed reduction mechanism 70, and a cover member that closes the first opening OP of the housing 30. 40 and a motor cover 50 that closes a second opening (not shown) of the housing 30. The housing 30, the cover member 40, and the motor cover 50 form an outline of the brushless wiper motor 20 in an assembled state.

  The housing 30 is formed with a predetermined shape by casting a molten aluminum material or the like, and includes a speed reduction mechanism accommodating portion 31 formed in a substantially bathtub-shaped shape with a bottom. The housing 30 includes a motor fixing portion (main body portion) 32 that is provided integrally with the speed reduction mechanism accommodating portion 31 and is formed in a substantially cylindrical shape with a bottom. As described above, the housing 30 is integrally formed with the speed reduction mechanism accommodating portion 31 and the motor fixing portion 32, and the speed reduction mechanism accommodating portion 31 is larger than the motor fixing portion 32, and most of the housing 30 is formed. The speed reduction mechanism accommodating portion 31 occupies it. Further, the depth direction of the speed reduction mechanism accommodating portion 31 (vertical direction in FIG. 4) and the depth direction of the motor fixing portion 32 (horizontal direction in FIG. 4) are orthogonal to (intersect) each other.

  One side of the motor fixing portion 32 in the axial direction is connected to the side wall 31 b of the speed reduction mechanism accommodating portion 31. Therefore, the portion of the side wall 31 b to which one side of the motor fixing portion 32 in the axial direction is connected forms the bottom wall of the motor fixing portion 32. A first through hole 31e through which the rotating shaft 64 of the motor 60 (see FIG. 2) passes and a terminal holder that forms the motor 60 are formed in the side wall 31b (the bottom wall of the motor fixing portion 32) of the speed reduction mechanism housing portion 31. A second through hole 31f through which the motor side terminal 62a of 62 passes is formed.

  A second opening (opening) is formed on the other side in the axial direction of the motor fixing portion 32, that is, on the side opposite to the speed reduction mechanism accommodating portion 31 side along the axial direction of the motor fixing portion 32. The motor 60 is assembled inside the motor fixing part 32 through the opening. More specifically, the stator 61 forming the motor 60 is fixed inside the motor fixing portion 32 in the radial direction, and the rotor 63 is rotatably accommodated inside the stator 61 fixed to the motor fixing portion 32 in the radial direction. Is done. Note that substantially half of one side of the stator 61 in the axial direction (the lower side in FIG. 2) is press-fitted on the radially inner side of the motor fixing portion 32.

  On the other side in the axial direction of the motor fixing portion 32, an annular flange portion 32a bulging outward in the radial direction is integrally provided. An annular cover flange 52 provided on the side opposite to the bottom 51 side along the axial direction of the motor cover 50 is opposed to the flange portion 32a. The flange portion 32a and the cover flange 52 are fixed to each other via a pair of fastening screws S1 (see FIG. 8). Thereby, substantially half of the other side (upper side in FIG. 2) of the stator 61 in the axial direction is covered with the motor cover 50. The stator 61 is not in contact with the motor cover 50. Therefore, the motor cover 50 can be easily attached to the motor fixing portion 32.

  Here, the motor fixing portion 32 and the motor cover 50 constitute a motor housing portion in the present invention. That is, the motor 60 (see FIG. 2) is housed inside the motor fixing portion 32 and the motor cover 50. The motor cover 50 is formed in a bottomed cylindrical shape by a resin material such as plastic, and has a bottom portion 51 (see FIG. 8) formed in a substantially disk shape, and an annular cover flange 52 bulging radially outward. And. A sealing member such as a sealing agent is interposed between the cover flange 52 and the flange portion 32a. This prevents the motor 60 from getting wet. Moreover, the uneven | corrugated | grooved part 53 (refer FIG. 8) is formed in the center part of the bottom part 51, and, thereby, the rigidity of the bottom part 51 is improved. Therefore, the resonance of the bottom 51 during operation of the motor 60 is suppressed, and the quietness of the brushless wiper motor 20 can be improved.

  As shown in FIG. 2, the motor 60 accommodated in the motor fixing portion 32 and the motor cover 50 includes a stator 61 fixed inside the motor fixing portion 32 in the radial direction. The stator 61 is formed in a substantially cylindrical shape by laminating a plurality of steel plates, which are magnetic bodies, and a plurality of teeth (not shown) are provided on the radially inner side. In these teeth, a U-phase, V-phase, and W-phase coil (not shown) is wound in a winding manner such as delta connection.

  A terminal holder 62 made of a resin material such as plastic is mounted on one side of the stator 61 in the axial direction as shown in FIG. The terminal holder 62 serves to collect the three-phase coils wound around the stator 61 and to pull out the ends of the coils to the outside. The terminal holder 62 includes a motor side terminal portion 62a. The motor side terminal portion 62a passes through a second through hole 31f provided in the side wall 31b of the speed reduction mechanism accommodating portion 31. Thereby, the end of the three-phase coil is drawn out of the motor fixing portion 32 (inside the speed reduction mechanism accommodating portion 31).

  Here, the motor-side terminal portion 62a is formed in a hollow, substantially box shape, and three female terminals TM1, TM2, and TM3 fixed by caulking to the end portions of the three-phase coils are provided therein. Is provided. The female terminal TM1 corresponds to a U-phase coil, the female terminal TM2 corresponds to a V-phase coil, and the female terminal TM3 corresponds to a W-phase coil.

  As shown in FIG. 2, a rotor 63 is rotatably provided on a radially inner side of the stator 61 through a predetermined gap (air gap). The rotor 63 includes a plurality of steel plates that are magnetic bodies. By being laminated, it is formed in a substantially cylindrical shape. A permanent magnet (not shown) formed in a substantially cylindrical shape is mounted on the outer side in the radial direction of the rotor 63.

  As described above, the brushless wiper motor 20 employs a brushless motor having an SPM (Surface Permanent Magnet) structure in which a permanent magnet is mounted on the surface of the rotor 63. However, the brushless motor having an IPM (Interior Permanent Magnet) structure in which a plurality of permanent magnets are embedded in the rotor 63 is not limited to the brushless motor having the SPM structure. Further, instead of one permanent magnet formed in a substantially cylindrical shape, a plurality of permanent magnets whose cross-sectional shape in a direction intersecting with the axis of the rotor 63 is formed in a substantially arc shape are magnetic poles along the circumferential direction of the rotor 63. Those arranged at equal intervals so as to be alternately arranged may be adopted. Further, the number of poles of the permanent magnet can be arbitrarily set according to the specifications of the brushless wiper motor 20 such as 2 poles or 4 poles or more.

  As shown in FIG. 2, the base end side (upper side in the figure) of the rotating shaft 64 is fixed to the shaft center of the rotor 63. A worm 71 (see FIG. 4) formed by rolling or the like is integrally provided on the tip end side (lower side in the figure) of the rotating shaft 64. Here, the worm 71 and the worm wheel 72 housed in the speed reduction mechanism housing portion 31 constitute a speed reduction mechanism 70.

  As shown in FIG. 4, a bearing member BE is provided at a substantially intermediate portion along the axial direction of the rotation shaft 64, and the bearing member BE is mounted inside the speed reduction mechanism housing portion 31. The bearing member BE regulates the movement of the rotating shaft 64 in the axial direction while rotatably supporting the rotating shaft 64. Thereby, the bearing member which should be provided in the base end side of the rotating shaft 64 is abbreviate | omitted. On the other hand, a bearing member (not shown) smaller than the bearing member BE is provided on the distal end side of the rotating shaft 64 in order to suppress the swing of the worm 71. Thus, while omitting the bearing member on the proximal end side of the rotating shaft 64 and providing a small bearing member on the distal end side of the rotating shaft 64, the dimensions along the axial direction of the rotating shaft 64 of the brushless wiper motor 20 are reduced. Therefore, it is small and light.

  Here, in the vicinity of the worm 71 along the axial direction of the rotation shaft 64, the first sensor magnet MG1 is fixed. The first sensor magnet MG1 is provided with a plurality of magnetic poles (not shown) along the rotation direction of the rotation shaft 64. Then, the first sensor magnet MG1 is rotated together with the rotation shaft 64, whereby the magnetic poles of the first sensor magnet MG1 appear alternately with the rotation of the rotation shaft 64. Then, three Hall ICs 81 (see FIG. 7) are arranged on the portion of the substrate 80 (see FIG. 7) facing the first sensor magnet MG1. As a result, the rotation number, rotation direction, rotation position, and the like of the rotation shaft 64 are detected by each Hall IC 81.

  As shown in FIGS. 2 and 4, the speed reduction mechanism accommodating portion 31 includes a bottom wall 31 a and a side wall 31 b provided so as to surround the bottom wall 31 a. More specifically, the side wall 31b is provided so as to rise substantially perpendicularly from the bottom wall 31a.

  A worm wheel 72 made of a resin material such as plastic is rotatably accommodated inside the speed reduction mechanism accommodating portion 31. The proximal end side of the output shaft 73 is fixed to the shaft center of the worm wheel 72, and the distal end side of the output shaft 73 is extended to the outside of the housing 30 through a boss portion 31c provided on the bottom wall 31a. ing. That is, the extending direction of the output shaft 73 and the extending direction of the rotating shaft 64 are orthogonal to each other. A fixed washer W is attached to the distal end side of the output shaft 73, whereby the output shaft 73 is fixed in the axial direction with respect to the boss portion 31c (housing 30). A link mechanism 14 (see FIG. 1) is fixed to the distal end side of the output shaft 73.

  Gear teeth 72 a (not shown in detail) are formed on the outer periphery of the worm wheel 72, and the gear teeth 72 a mesh with a worm 71 provided integrally with the rotating shaft 64. Here, the worm 71 and the worm wheel 72 form a speed reduction mechanism 70. The speed reduction mechanism 70 reduces the rotation of the rotating shaft 64 to a predetermined rotational speed to increase the torque, and the rotation with the increased torque. The force is output from the output shaft 73 to the link mechanism 14.

  Further, as shown in FIG. 4, the second sensor magnet MG2 is fixed to the shaft center of the worm wheel 72 and opposite to the output shaft 73 side. The second sensor magnet MG2 is provided with a plurality of magnetic poles (not shown) along the rotation direction of the output shaft 73 (see FIG. 2). Thereby, the magnetic poles of the second sensor magnet MG2 appear alternately as the output shaft 73 rotates. And one MR sensor 82 (refer FIG. 7) is arrange | positioned in the part facing the 2nd sensor magnet MG2 of the board | substrate 80 (refer FIG. 7). As a result, the rotational direction and rotational position of the output shaft 73 are detected by the MR sensor 82.

  As shown in FIG. 2, three attachment legs 31 d are provided on the bottom wall 31 a of the speed reduction mechanism housing 31. These mounting legs 31d are distributed around the boss portion 31c and protrude in the same direction as the protruding direction of the boss portion 31c (the front side in the figure). Each mounting leg 31d is formed with a female thread portion F, whereby the brushless wiper motor 20 is fixed to the mounting bracket mounted on the vehicle 10 side by three fixing bolts (not shown). Is done. Here, each attachment leg 31d is provided so as to rise from the bottom wall 31a at a substantially right angle. As a result, the housing 30 is prevented from being enlarged in a direction that intersects the axial direction of the output shaft 73.

  Here, a plurality of reinforcing ribs RB are provided radially around the boss 31c, thereby reinforcing the bottom wall 31a. Therefore, the wall thickness of the bottom wall 31a can be made thinner, and this also realizes a reduction in the size and weight of the brushless wiper motor 20.

  As shown in FIG. 4, the height dimension of the portion of the side wall 31 b of the speed reduction mechanism housing portion 31 connected to one side in the axial direction of the motor fixing portion 32 is larger than that of the other portion of the side wall 31 b. It is the largest. In other words, the depth dimension of the portion where the motor fixing portion 32 of the speed reduction mechanism accommodating portion 31 is provided is the deepest depth dimension compared to the other portions of the speed reduction mechanism accommodating portion 31. And in the part to which the axial direction one side of the motor fixing | fixed part 32 of the side wall 31b was connected, the 1st through-hole 31e in which the cross section was formed in the substantially circular shape, and the 2nd penetration in which the cross section was formed in the substantially rectangular shape. A hole 31 f is formed side by side in the axial direction of the output shaft 73. Therefore, this also prevents the housing 30 from increasing in size in a direction that intersects the axial direction of the output shaft 73.

  Each of the first through hole 31e and the second through hole 31f communicates the inside of the speed reduction mechanism housing portion 31 and the inside of the motor fixing portion 32, and a rotation shaft 64 is set in the first through hole 31e. The motor side terminal portion 62a passes through the second through hole 31f without rattling. Here, the speed reduction mechanism accommodating portion 31 is formed with a first opening (opening) OP, and the worm wheel 72 including the output shaft 73 is accommodated in the speed reduction mechanism accommodating via the first opening OP. It is housed inside the part 31. At this time, the tip end side of the output shaft 73 is inserted into the boss portion 31c.

  The first opening OP of the speed reduction mechanism accommodating portion 31 is closed by a cover member 40 shown in FIGS. Here, the cover member 40 is fixed to the speed reduction mechanism accommodating portion 31 with three fixing screws S2. An elastic seal (not shown) such as rubber packing is interposed between the speed reduction mechanism accommodating portion 31 and the cover member 40, so that rainwater or the like enters the inside of the speed reduction mechanism accommodating portion 31. Is prevented. The cover member 40 is formed in a bottomed shape by injection molding or the like of a molten plastic material, and the outer shape thereof is substantially the same as the outer shape of the speed reduction mechanism accommodating portion 31 as shown in FIGS. It is said that.

  As shown in FIGS. 5 and 6, the cover member 40 includes a cover main body 41 that forms the bottom of the cover member 40. Further, around the cover main body 41, a seal mounting portion 42 to which an elastic seal is mounted is integrally provided. Further, a connector connecting portion 43 to which an external connector CN1 (see FIG. 2) on the vehicle 10 side is connected is integrally formed on the seal mounting portion 42 of the cover member 40.

  As shown in FIG. 8, the connector connecting portion 43 is a substantially box in which one side (front side in FIG. 8) along the axial direction of the rotating shaft 64 is opened and the other side (back side in FIG. 8) is closed. It is formed in a shape, and the shape of the connector connecting portion 43 is determined by the standard. Accordingly, the external connector CN1 (see FIG. 2) whose shape is similarly defined by the standard can be inserted and removed with one touch without rattling with respect to the connector connecting portion 43.

  The connector connecting portion 43 includes a pair of arc-shaped portions 43a and 43b that are arranged to face each other in a direction crossing the axial direction of the rotating shaft 64, and a pair of flat portions 43c that are provided between the arc-shaped portions 43a and 43b. 43d. A pair of corner portions 43e are provided on the arc-shaped portion 43a on the side away from the rotation shaft 64 so as to face the thickness direction of the connector connecting portion 43 (vertical direction in FIG. 8). On the other hand, the arcuate portion 43b on the side close to the rotation shaft 64 is not provided with corner portions. In other words, the pair of corner portions 43e have a function of preventing erroneous assembly of the external connector CN1 with respect to the connector connecting portion 43. In addition, the circular arc part 43b in which the corner | angular part is not provided comprises the circular arc part in this invention.

  In addition, of the pair of flat portions 43c and 43d, the engaging portion ST (see FIG. 2) of the external connector CN1 is provided on the flat portion 43c on the side where the output shaft 73 is located, that is, on the side where the speed reduction mechanism accommodating portion 31 is located. An engaging claw 43f to be engaged is provided. As shown in FIG. 8, the engaging claws 43f protrude from the flat portion 43c toward the output shaft 73, and the engaging portion ST is engaged when the external connector CN1 is connected to the connector connecting portion 43. It gets caught over the claw 43f. As a result, the external connector CN1 is in a locked state in which the external connector CN1 is prevented from being detached from the connector connecting portion 43. When the external connector CN1 is removed from the connector connection portion 43, the engagement portion ST is released from the engagement claw 43f by holding the engagement portion ST, and the external connector CN1 is connected to the connector connection portion 43. Just pull out from 43.

  As shown in FIG. 6, three connector-side conductive members UBAT, GND, and LIN are provided inside the cover main body 41 by insert molding. These connector-side conductive members UBAT, GND, and LIN are bent by press molding a copper plate or the like having excellent conductivity, and are disposed close to each other at a portion near the connector connecting portion 43 of the cover body 41. . One end side of each connector-side conductive member UBAT, GND, LIN is exposed inside the connector connection portion 43 (see FIG. 8). Further, the other end side of each connector side conductive member UBAT, GND, LIN is exposed in the vicinity of the connector connection portion 43 inside the cover body 41 and is electrically connected to the substrate 80 (see FIG. 7). Yes.

  In this way, each connector-side conductive member UBAT, GND, LIN is provided between the board 80 and the connector connecting portion 43, and the connector-side conductive member UBAT serves as the first conductive member in the present invention. The GND constitutes the second conductive member in the present invention, and the connector side conductive member LIN constitutes the third conductive member in the present invention.

  Here, drive current (battery power) is supplied from the external connector CN1 to the connector-side conductive member UBAT, and the connector-side conductive member GND is body-grounded (grounded) via the external connector CN1, and the connector-side conductive member LIN. Is input with an operation signal such as a wiper switch (not shown) from the external connector CN1. As shown in FIG. 8, the connector-side conductive members UBAT and GND are arranged close to each other and away from the rotating shaft 64. On the other hand, the connector-side conductive member LIN is disposed at a position separated from each connector-side conductive member UBAT, GND and close to the rotating shaft 64. One end side of each connector side conductive member UBAT, GND, LIN is connected to the connector side conductive member UBAT, the connector side conductive member GND, the connector side conductive member from the radially outer side of the rotating shaft 64 inside the connector connecting portion 43. They are arranged in the order of LIN.

  As shown in FIG. 6, in addition to each connector side conductive member UBAT, GND, LIN, three motor side conductive members MC1, MC2, MC3 are provided by insert molding inside the cover body 41. These motor-side conductive members MC1, MC2, and MC3 are bent by press forming a copper plate or the like having excellent conductivity, and the connector connecting portion 43 of the cover main body 41 is centered around the output shaft 73 (see FIG. 8). It arrange | positions so that it may mutually become equal intervals in the part on the opposite side to the side.

  And one end side of each motor side conductive member MC1, MC2, MC3 is three female terminals TM1, TM2, TM3 of the motor side terminal portion 62a under the assembled state of the brushless wiper motor 20 (see FIG. 4). Are electrically connected to each other. That is, one end side of each motor side conductive member MC1, MC2, MC3 is a male terminal. The motor-side conductive member MC1 corresponds to a U-phase coil, the motor-side conductive member MC2 corresponds to a V-phase coil, and the motor-side conductive member MC3 corresponds to a W-phase coil.

  The other end sides of the motor-side conductive members MC1, MC2, and MC3 are respectively disposed at substantially central portions inside the cover main body 41, as shown in FIG. The other end sides of the motor-side conductive members MC1, MC2, and MC3 are arranged at equal intervals along the axial direction of the rotating shaft 64 (see FIG. 2), and are electrically connected to the substrate 80 (see FIG. 7). It is connected. Thus, each motor side conductive member MC1, MC2, MC3 is provided between the board | substrate 80 and the motor 60, respectively.

  Here, the other end side of each connector side conductive member UBAT, GND, LIN and the other end side of each motor side conductive member MC1, MC2, MC3 are electrically connected to the substrate 80 by soldering or the like, respectively. . In FIG. 6, in order to make the illustration easy to understand, each of the conductive members UBAT, GND, LIN, MC1, MC2, and MC3 (6 in total) is shaded.

  As shown in FIGS. 5 and 7, a substrate 80 that controls the brushless wiper motor 20 is mounted inside the cover body 41. Specifically, the substrate 80 is fixed to the inside of the cover body 41 by a plurality of fixing screws (not shown). A plurality of electronic components EP are mounted on the front surface (see FIG. 5) and the back surface (see FIG. 7) of the substrate 80, respectively.

  Further, as shown in FIG. 7, three Hall ICs 81 are mounted on the back surface of the substrate 80. These Hall ICs 81 face the first sensor magnet MG1 (see FIG. 4) in a state where the brushless wiper motor 20 is assembled. Thereby, each Hall IC 81 detects the number of rotations, the rotation direction, and the like of the rotation shaft 64. Further, one MR sensor 82 is mounted on the back surface of the substrate 80. The MR sensor 82 faces the second sensor magnet MG2 (see FIG. 4) in a state where the brushless wiper motor 20 is assembled. Thereby, the MR sensor 82 detects the rotation direction, rotation position, and the like of the output shaft 73.

  Here, as shown in FIG. 7, one CPU 83 and two FET elements 84 (6 in total) each for the U phase, the V phase, and the W phase are mounted on the back surface of the substrate 80. A sensor signal from each Hall IC 81 and MR sensor 82 is input to the CPU 83. In response to the input of these sensor signals, the CPU 83 switches each FET element 84 at a predetermined timing, whereby the motor 60 (see FIG. 2) is rotationally driven (controlled) at a predetermined rotation speed in a predetermined direction. )

  The substrate 80 is formed in a substantially rectangular shape, and in the vicinity of one of the four corners, the first through hole TH1, the second through hole TH2, the third through hole TH3, the fourth through hole. Through holes TH4 are provided close to each other. These through holes TH1 to TH4 are arranged at equal intervals in the direction in which the long side of the substrate 80 extends (left and right direction in FIG. 7). The other end side (see FIG. 6) of the connector side conductive member UBAT is electrically connected to the first through hole TH1, and the other end side of the connector side conductive member GND (see FIG. 6) is connected to the second through hole TH2. 6) is electrically connected, and the other end side of the connector-side conductive member LIN (see FIG. 6) is electrically connected to the fourth through hole TH4. Note that the third through hole TH3 is not used in the present embodiment.

  A fifth through hole TH5, a sixth through hole TH6, and a seventh through hole TH7 are provided close to each other at a substantially central portion of the substrate 80, respectively. These through holes TH5 to TH7 are arranged at equal intervals in the direction in which the short side of the substrate 80 extends (the vertical direction in FIG. 7). The other end side (see FIG. 6) of the motor side conductive member MC1 is electrically connected to the fifth through hole TH5, and the other end side (see FIG. 6) of the motor side conductive member MC2 is connected to the sixth through hole TH6. 6) is electrically connected, and the other end side (see FIG. 6) of the motor side conductive member MC3 is electrically connected to the seventh through hole TH7.

  As shown in FIG. 5, the substrate 80 is covered with a substrate cover 90. That is, the substrate 80 is disposed between the cover main body 41 and the substrate cover 90 inside the speed reduction mechanism accommodating portion 31 (see FIG. 4). The substrate cover 90 is formed in a thin plate shape by injection molding or the like of a resin material such as plastic. This prevents grease (not shown) applied between the worm 71 and the worm wheel 72 from scattering and adhering to the substrate 80. Here, a through hole 91 is formed in a substantially central portion of the substrate cover 90. The through hole 91 is provided at a portion facing the second sensor magnet MG2 (see FIG. 4), thereby preventing the detection accuracy of the MR sensor 82 from being lowered. Since grease is applied between the worm 71 and the worm wheel 72, the grease does not reach the portion where the through hole 91 is present.

  As shown in FIG. 8, the brushless wiper motor 20 is a p-type brushless wiper motor and includes a connector connecting portion 43 corresponding to the external connector CN1 for the right handle. Hereinafter, the external connector CN1 for the right handle connected to the connector connecting portion 43 will be described.

  As shown in FIG. 9A, the external connector CN1 for the right handle is formed in a substantially rectangular parallelepiped shape, and an insertion projection 100 that enters the inside of the connector connecting portion 43 (see FIG. 8) is provided on the inner side thereof. ing. Inside the insertion protrusion 100 are provided a power supply terminal 101 and a grounding terminal 102 which are arranged close to each other, and a communication terminal 103 (all female terminals) spaced from the grounding terminal 102. Then, by connecting the external connector CN1 to the connector connecting portion 43, one end side of the connector-side conductive member UBAT (see FIG. 6) is electrically connected to the power supply terminal 101, and the connector-side conductive member GND (see FIG. 6). One end side of the connector is electrically connected to the grounding terminal 102, and one end side of the connector side conductive member LIN (see FIG. 6) is electrically connected to the communication terminal 103.

  Inside the external connector CN1 and around the insertion protrusion 100, a pair of arc-shaped portions 43a and 43b, a pair of flat portions 43c and 43d, and a pair of corner portions 43e of the connector connecting portion 43 are respectively inserted. A recess 104 is formed. The recess 104 is recessed along the insertion / removal direction of the connector connector 43 of the external connector CN1. Specifically, the recess 104 is formed of a pair of arcuate portions 104a and 104b, a pair of flat portions 104c and 104d, and a pair of corner portions 104e.

  A pair of corners 104e is arranged on the side where the power supply terminal 101 and the grounding terminal 102 arranged close to each other are arranged. Further, as shown in FIG. 9 (a), the power supply terminal 101 and the grounding terminal 102, which are arranged close to each other, and the pair of corner portions 104e are engaged with each other on the right side in the drawing. The part ST is arranged on the flat part 104c side (lower side in the figure). Thereby, the external connector CN1 for the right handle can be reliably electrically connected to the connector connecting portion 43 of the brushless wiper motor 20 shown in FIG. 8 without being erroneously assembled.

  FIG. 9B shows an external connector CN2 for the left handle. The external connector CN2 for the left handle is different from the external connector CN1 for the right handle only in its internal shape. In other words, the left handle external connector CN2 cannot be inserted into the connector connecting portion 43 of the brushless wiper motor 20 shown in FIG. Thus, erroneous assembly (erroneous mounting) of the brushless wiper motor 20 to the vehicle 10 (see FIG. 1) is reliably prevented.

  Specifically, as shown in FIG. 9B, the external connector CN2 has a power supply terminal 111 and a grounding terminal 112 that are arranged close to each other, and has a pair of corner portions 104e opposite to the external connector CN1. It is arranged on the side opposite to the arranged side, that is, on the arcuate part 104b side. Therefore, the communication terminal 113 is disposed on the side where the pair of corner portions 104e are present. The other parts of the external connector CN2 have the same shape as the external connector CN1, as shown in FIG.

  As shown in FIG. 10, in order to make the p-type brushless wiper motor 20 correspond to the external connector CN2 for the left handle, the cover member 120 for the left handle is used instead of the cover member 40 for the right handle (see FIG. 8). To use. That is, in the brushless wiper motor 20 (p-type brushless wiper motor) of the present embodiment, the right-hand drive vehicle 10 (see FIG. 5) is prepared only by preparing the cover member 40 for the right handle and the cover member 120 for the left handle. 11 (a)) and a left-hand drive vehicle 10 (see FIG. 11 (b)).

  As shown in FIG. 10, the cover member 120 for the left handle is different from the cover member 40 for the right handle only in the shape of the connector connecting portion 121. Here, the lead-out structure on one end side of each connector-side conductive member UBAT, GND, LIN into the connector connecting portion 121 is the same as the connector connecting portion 43 (see FIG. 8) in the cover member 40 for the right handle. . That is, as can be seen from a comparison between FIG. 8 and FIG. 10, the arrangement order is the same for the right handle and for the left handle.

  The connector connecting portion 121 includes a pair of arc-shaped portions 121a and 121b that are arranged to face each other in a direction intersecting the axial direction of the rotating shaft 64 (see FIG. 8), and a pair provided between the arc-shaped portions 121a and 121b. Flat portions 121c and 121d. A pair of corner portions 121e are provided on the arc-shaped portion 121b on the side close to the rotation shaft 64 so as to face the thickness direction (vertical direction in FIG. 10) of the connector connecting portion 121. On the other hand, the arcuate portion 121a on the side away from the rotation shaft 64 is not provided with corner portions. In other words, the pair of corner portions 121e have a function of preventing erroneous assembly of the external connector CN2 with respect to the connector connecting portion 121. In addition, the arc-shaped part 121a in which the corner | angular part is not provided comprises the circular arc part in this invention.

  Further, of the pair of flat portions 121c and 121d, the flat portion 121d on the side opposite to the side where the output shaft 73 is located, that is, on the side opposite to the speed reduction mechanism accommodating portion 31 side, is the engaging portion of the external connector CN2. Engaging claws 121f to which ST (see FIG. 9B) is engaged are provided. As shown in FIG. 10, the engaging claw 121f protrudes from the flat portion 121d toward the side opposite to the output shaft 73 side. When the external connector CN2 is connected to the connector connecting portion 121, the engaging portion is engaged. ST gets over the engaging claw 121f and is hooked. Accordingly, the external connector CN2 is in a locked state in which the external connector CN2 is prevented from being detached from the connector connecting portion 121. When the external connector CN2 is removed from the connector connection portion 121, the engagement portion ST is released from the engagement claw 121f by grasping the engagement portion ST, and the external connector CN2 is connected to the connector connection portion 121. Just pull out from 121.

  As shown in FIGS. 2 and 3, when the brushless wiper motor 20 is viewed from the axial direction of the output shaft 73, the brushless wiper motor 20 has a unique shape. Specifically, as shown in FIG. 2, in the brushless wiper motor 20, the total length of the motor fixing portion 32 and the motor cover 50 along the axial direction of the rotating shaft 64 is L1, and the speed reduction mechanism accommodating portion 31 is provided. When the length dimension of L2 is L2 and the length dimension of the connector connecting portion 43 is L3, the shape satisfies both the expression of L1 ≦ 2 × L3 and the expression of L2 ≦ 2 × L1.

  That is, when the length dimension L3 of the connector connecting portion 43 determined by the standard is used as a reference, the total length L1 of the motor fixing portion 32 and the motor cover 50 is the length dimension L3 of the connector connecting portion 43. Is less than twice the length. Therefore, the dimension along the axial direction of the rotating shaft 64 of the motor 60 is reduced, and thus the motor 60 is made compact. This is realized by adopting a brushless motor as the motor 60 and by fixing the stator 61 of the motor 60 to the motor fixing portion 32 provided integrally with the speed reduction mechanism accommodating portion 31. More specifically, the length of the motor fixing portion 32 along the axial direction of the rotating shaft 64 is set to be slightly shorter than the length L3 of the connector connecting portion 43 (L4 ≦ L3), and the motor fixing portion is fixed. The half of the stator 61 is press-fitted and firmly fixed to the portion 32 so that the motor 60 is disposed closer to the speed reduction mechanism housing portion 31 and the motor fixing portion 32 and the motor cover 50 are combined. The length L1 is shortened.

  Further, when the length dimension L1 obtained by summing the shortened motor fixing portion 32 and the motor cover 50 is used as a reference, the length dimension of the speed reduction mechanism accommodating portion 31 is L2, which is the motor fixing portion 32 and the motor cover 50. And the total length is equal to or less than twice the length L1. Therefore, the size along the axial direction of the rotating shaft 64 of the speed reduction mechanism accommodating portion 31 is reduced, and consequently the speed reduction mechanism accommodating portion 31 is made compact. This is because the worm speed reducer that can obtain a relatively large reduction ratio is adopted for the speed reduction mechanism 70, and each mounting leg 31d is provided so as to rise substantially perpendicularly from the bottom wall 31a. This is realized by preventing the bottom wall 31a from protruding outward in the radial direction.

  Thus, by adopting the dimensional relationship based on the length dimension L3 of the connector connecting portion 43, when the brushless wiper motor 20 is viewed from the axial direction of the output shaft 73, as shown in FIG. The brushless wiper motor 20 can be substantially inscribed in the various spaces SP1, SP2 and SP3 (broken line, two-dot chain line, and one-dot chain line) formed in FIG.

  As described above, the advantages of the brushless wiper motor 20 that can be substantially inscribed in the various spaces SP1, SP2, and SP3 formed in the virtual square are summarized as follows.

  That is, a right-hand drive vehicle 10 (see FIG. 11 (a)) having an external connector CN1 for the right handle and a left-hand drive vehicle 10 (see FIG. 11 (b)) having an external connector CN2 for the left handle. It is possible to easily cope with both of these by simply preparing and exchanging the cover member 40 for the right handle and the cover member 120 for the left handle.

  Further, the brushless wiper motor 20 described as the p-type brushless wiper motor is formed so as to be mirror-symmetric as shown in FIGS. However, the right-hand drive vehicle 10 (see FIG. 12A) and the left-hand handle can be obtained simply by preparing and replacing the cover member for the right-hand handle and the cover member for the left-hand handle (both not shown). The vehicle 10 (see FIG. 12B) can be easily handled.

  Thus, regardless of whether the brushless wiper motor 20 is p-type or q-type, the right-hand drive vehicle 10 and the left-hand drive vehicle can be simply replaced by preparing and replacing the right-hand cover member and the left-hand cover member. 10 can be easily accommodated, and parts other than the cover member constituting the brushless wiper motor 20 can be shared by p-type for p-type and q-type for q-type.

  As described above in detail, according to the brushless wiper motor 20 according to the present embodiment, the total length of the motor fixing portion 32 and the motor cover 50 along the axial direction of the rotating shaft 64 is L1, and the reduction mechanism When the length dimension of the housing part 31 is L2 and the length dimension of the connector connection part 43 is L3, the expression L1 ≦ 2 × L3 and the expression L2 ≦ 2 × L1 are satisfied. Based on the length dimension L3 (standard dimension), the length dimension along the axial direction of the rotating shaft 64 of the brushless wiper motor 20 can be made shorter than before.

  When the brushless wiper motor 20 is viewed from a direction crossing the axial direction of the rotating shaft 64, the outer shape of the brushless wiper motor 20 may be brought closer to a shape that is substantially inscribed inside the virtual square (spaces SP1, SP2, SP3 shown in FIG. 3). In addition, the conventional concept of the p-type wiper motor and the q-type wiper motor can be eliminated. Therefore, the layout can be greatly improved. In addition, it is possible to share components such as the substrate 80 and the housing 30 on the left and right sides, and it is possible to reduce the manufacturing cost and improve the yield.

  Furthermore, when the shape of the external connector is different between the left and right sides, only the shape of the connector connecting portion of the cover member need be changed. Therefore, an increase in manufacturing cost can be suppressed.

  Further, according to the brushless wiper motor 20 according to the present embodiment, the motor fixing portion 32 provided integrally with the speed reduction mechanism housing portion 31 and opened on the opposite side to the speed reduction mechanism housing portion 31 side along the axial direction thereof, Since the stator 61 forming the motor 60 is fixed, the motor 60 can be disposed close to the speed reduction mechanism housing portion 31, and the brushless wiper motor 20 can be further downsized. Further, since the positioning of the rotary shaft 64 with respect to the output shaft 73 can be performed with high accuracy for each product, the life of the speed reduction mechanism 70 can be extended and noise can also be reduced.

  Furthermore, according to the brushless wiper motor 20 according to the present embodiment, one end side of each connector-side conductive member UBAT, GND, LIN is connected to the connector-side conductive member UBAT, the connector-side conductive member GND, Since the connector-side conductive members LIN are arranged in this order, an increase in size of the output shaft 73 of the brushless wiper motor 20 in the axial direction can be suppressed.

  Next, Embodiment 2 of the present invention will be described in detail with reference to the drawings. Note that portions having the same functions as those in the first embodiment described above are denoted by the same reference numerals, and detailed description thereof is omitted.

  FIG. 13 is a plan view of the brushless wiper motor according to the second embodiment as viewed from the output shaft side.

  As shown in FIG. 13, the brushless wiper motor 130 according to the second embodiment is different from the brushless wiper motor 20 according to the first embodiment (see FIG. 2) in the length of the motor fixing portion 32 along the axial direction of the rotating shaft 64. The only difference is that the dimension L4 is set slightly longer than the length dimension L3 of the connector connecting portion 43 (L3 ≦ L4). However, the total length L1 of the motor fixing portion 32 and the motor cover 50 is the same as that of the brushless wiper motor 20 of the first embodiment.

  Also in the brushless wiper motor 130 of the second embodiment formed as described above, the same operational effects as those of the first embodiment can be obtained. In addition, according to the brushless wiper motor 130 of the second embodiment, more than half of the portion along the axial direction of the stator 61 can be press-fitted into the motor fixing portion 32. The fixing strength of 61 can be further increased. As a result, the axial displacement of the rotor 63 can be more reliably suppressed, and the operating noise of the brushless wiper motor 130 can be further reduced.

  It goes without saying that the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the invention. For example, in each of the above-described embodiments, the case where the MR sensor 82 is used as a sensor for detecting the rotation direction, the rotation position, and the like of the output shaft 73 has been described, but the present invention is not limited to this, and a plurality of Hall ICs are provided. A rotation angle sensor configured as one part can also be used.

  In each of the above embodiments, the external connector shown in FIG. 9A is an external connector CN1 for the right handle, the external connector shown in FIG. 9B is an external connector CN2 for the left handle, 8, the cover member 40 for the right handle is used as the cover member 40 and the cover member 120 shown in FIG. 10 is the cover member 120 for the left handle. However, the present invention is not limited to this, and the left and right sides are reversed. Anyway. That is, the external connector for the right handle may be the external connector for the left handle, and the external connector for the left handle may be the external connector for the right handle. The right handle cover member may be a left handle cover member, and the left handle cover member may be a right handle cover member. In short, the brushless wiper motor according to the present invention is not distinguished for the right handle and the left handle, and can correspond to the right layout and the left layout only by exchanging the cover member.

  Further, in each of the above embodiments, the case where the brushless wiper motor 20 is used as a drive source of the wiper device for wiping the front windshield 11 of the vehicle 10 has been described. However, the present invention is not limited to this, and a vehicle such as an automobile. It can also be used as a drive source for a rear wiper device or a wiper device such as a railway vehicle or an aircraft.

  In addition, the material, shape, dimensions, number, installation location, and the like of each component in each of the above embodiments are arbitrary as long as the present invention can be achieved, and are not limited to each of the above embodiments.

DESCRIPTION OF SYMBOLS 10 Vehicle 11 Front windshield 12 Wiper apparatus 13 Wiper member 14 Link mechanism 15 Wiper blade 16 Wiping range 20 Brushless wiper motor 30 Housing 31 Deceleration mechanism accommodating part 31a Bottom wall 31b Side wall 31c Boss part 31d Mounting leg 31e 1st through-hole 31f 2nd Through hole 32 Motor fixing part (motor housing part, main body part)
32a Flange portion 40 Cover member 41 Cover body 42 Seal mounting portion 43 Connector connection portion 43a Arc-shaped portion 43b Arc-shaped portion (arc-shaped portion)
43c, 43d Flat part 43e Corner part 43f Engagement claw 50 Motor cover 51 Bottom part 52 Cover flange 53 Concavity and convexity part 60 Motor 61 Stator 62 Terminal holder 62a Motor side terminal part 63 Rotor 64 Rotating shaft 70 Deceleration mechanism 71 Worm 72 Worm wheel 72a Gear Teeth 73 Output shaft 80 Substrate 81 Hall IC
82 MR sensor 83 CPU
84 FET element 90 Substrate cover 91 Through hole 100 Insertion protrusion 101 Power supply terminal 102 Grounding terminal 103 Communication terminal 104 Recessed part 104a, 104b Arc-shaped part 104c, 104d Flat part 104e Corner part 111 Power supply terminal 112 Grounding terminal 113 Communication Terminal 120 Cover member 121 Connector connection part 121a Arc-shaped part (arc part)
121b Arc-shaped part 121c, 121d Flat part 121e Corner part 121f Engagement claw 130 Brushless wiper motor BE Bearing member CN1 External connector (for right handle)
CN2 External connector (for left handle)
EP Electronic component F Female thread UBAT Connector side conductive member (first conductive member)
GND connector side conductive member (second conductive member)
LIN connector side conductive member (third conductive member)
MC1, MC2, MC3 Motor side conductive member MG1 First sensor magnet MG2 Second sensor magnet OP First opening (opening)
RB Reinforcement rib S1 Fastening screw S2 Fixing screw SP1, SP2, SP3 Space (virtual square)
ST engaging portion TH1 first through hole TH2 second through hole TH3 third through hole TH4 fourth through hole TH5 fifth through hole TH6 sixth through hole TH7 seventh through hole TM1, TM2, TM3 female terminal W fixed washer

Claims (8)

A brushless wiper motor that swings a wiper member,
A motor having a rotating shaft;
A speed reduction mechanism for decelerating the rotation of the rotary shaft;
A housing having a motor housing for housing the motor and a speed reduction mechanism housing for housing the speed reduction mechanism;
A cover member mounted with a substrate that closes the opening of the speed reduction mechanism housing and controls the rotation of the motor;
A connector connecting portion provided on the cover member to which an external connector is connected;
Have
When the length dimension of the motor accommodating portion along the axial direction of the rotating shaft is L1, the length dimension of the speed reduction mechanism accommodating portion is L2, and the length dimension of the connector connecting portion is L3,
Satisfy the formula of L1 ≦ 2 × L3 and the formula of L2 ≦ 2 × L1.
Brushless wiper motor. The brushless wiper motor according to claim 1,
The motor accommodating portion is
A body portion provided integrally with the speed reduction mechanism housing portion and having an opening opposite to the speed reduction mechanism housing portion side along the axial direction;
A motor cover for closing the opening of the main body,
Formed from
A stator that forms the motor is fixed to the main body,
Brushless wiper motor. The brushless wiper motor according to claim 2,
When the length dimension of the main body portion along the axial direction of the rotating shaft is L4,
Satisfy the formula L4 ≦ L3.
Brushless wiper motor. The brushless wiper motor according to claim 2,
When the length dimension of the main body portion along the axial direction of the rotating shaft is L4,
Satisfying the expression of L3 ≦ L4,
Brushless wiper motor. In the brushless wiper motor according to any one of claims 1 to 4,
A first conductive member, a second conductive member, and a third conductive member are provided between the substrate and the connector connecting portion,
One end side of each conductive member is exposed inside the connector connecting portion, the other end side is connected to the substrate,
One end side of each of the conductive members is arranged in the order of the first conductive member, the second conductive member, and the third conductive member from the radially outer side of the rotation shaft.
Brushless wiper motor. The brushless wiper motor according to claim 5,
The first conductive member is connected to a power terminal of the external connector;
The second conductive member is connected to a grounding terminal of the external connector;
The third conductive member is connected to a communication terminal of the external connector;
Brushless wiper motor. The brushless wiper motor according to claim 5 or 6,
A corner is provided on the side of the connector connecting portion away from the rotation axis,
An arc portion is provided on the side of the connector connecting portion close to the rotation axis,
An engaging claw with which the engaging portion of the external connector is engaged is provided on the speed reduction mechanism accommodating portion side of the connector connecting portion.
Brushless wiper motor. The brushless wiper motor according to claim 5 or 6,
An arc portion is provided on the side of the connector connecting portion away from the rotating shaft,
A corner is provided on the side of the connector connecting portion close to the rotation axis,
An engaging claw with which the engaging portion of the external connector is engaged is provided on the opposite side of the connector connecting portion from the speed reduction mechanism accommodating portion side.
Brushless wiper motor.

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