JP2006211869A - Motor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a motor which can facilitate the assembly work of a motor main body and a control circuit board to the main body of a housing, and also can lessen the stress generated in a joining terminal on the motor side and a joining terminal on the board side. <P>SOLUTION: A board storage 21d for accommodating the control circuit board 25 and an insertion hole 21f enabling the control circuit board 25 to be inserted into the board storage 21d from outside are made in the housing main body 21. The motor main body has a brush holder, and a joining terminal 11 on the motor side is arranged at the terminal support 7b of the brush holder. The control circuit board 25 has the joining terminal 35 on the board side which can electrically connect with the joining terminal 11 on the motor side while being assembled into the board storage 21d. Then, the control circuit board 25 is assembled to the board storage 21d, having a clearance of X1-X4. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a motor including a speed reduction mechanism and a control circuit board.

  Conventionally, as a motor used in a power window device or the like, a motor main body, a speed reduction mechanism for reducing a rotation speed of a rotating shaft in the motor main body, housed in a gear housing (housing main body), a motor main body, Some have a control circuit board for controlling driving.

And as such a motor, a control circuit board is accommodated in the board | substrate accommodating part formed in the gear housing, The board | substrate side connection terminal is electrically connected to the motor side connection terminal of the motor main body assembled | attached to the gear housing. (For example, refer to Patent Document 1).
US Pat. No. 5,245,258

  Here, in the motor as described above, since the motor body and the control circuit board are assembled to the gear housing, the positional deviation when the motor body is assembled to the gear housing and the position when the control circuit board is assembled to the gear housing. Each shift occurs. In addition, when the control circuit board is arranged in the gear housing through the cover that closes the insertion hole of the board housing portion as in the above-mentioned Patent Document 1, misalignment occurs when the control circuit board is assembled to the cover. The positional deviation when the control circuit board is assembled to the gear housing is further increased. Therefore, when the motor side connection terminal of the motor body and the board side connection terminal of the control circuit board are connected (electrically), misalignment at the time of assembly of the two is piled up. There is a need for twisting or the like) and matching (connecting). Therefore, there is a problem that the assembling work becomes complicated. Further, a large stress is always applied to the motor side connection terminal and the board side connection terminal, which causes a connection failure and damages a portion supporting the terminal. In addition, for example, if one terminal (male) is provided with a tapered portion with a tapered tip, and a connection structure that is guided to the other terminal (female) even if there is a slight misalignment, the assembly work However, the problem that the range of misalignment that can be dealt with is narrow and the problem that a large stress is applied cannot be solved.

  The present invention has been made to solve the above-described problems, and its object is to facilitate the assembly work of the motor main body and the control circuit board to the housing main body, as well as the motor side connection terminal and the board. An object of the present invention is to provide a motor capable of reducing the stress generated in the side connection terminal.

  According to the first aspect of the present invention, a motor main body having a rotating shaft, a housing main body assembled to the motor main body and housing a speed reduction mechanism for decelerating the rotation of the rotating shaft, and driving of the motor main body are controlled. In the motor provided with the control circuit board, the housing body includes a board housing part for housing the control circuit board, and an insertion hole through which the control circuit board can be inserted into the board housing part from the outside. The motor body has a motor side connection terminal, and the control circuit board is electrically connected to the motor side connection terminal in a state assembled in the board housing portion. The control circuit board has a terminal, and the control circuit board is assembled to the board housing part with a movement allowing part in at least one of a planar direction and a thickness direction of the control circuit board.

  According to a second aspect of the present invention, a motor main body having a rotation shaft, a housing main body assembled to the motor main body for housing a speed reduction mechanism for decelerating the rotation of the rotation shaft, and driving of the motor main body are controlled. In the motor provided with the control circuit board, the housing body includes a board housing part for housing the control circuit board, and an insertion hole through which the control circuit board can be inserted into the board housing part from the outside. The motor body has a motor side connection terminal, and the control circuit board is electrically connected to the motor side connection terminal in a state assembled in the board housing portion. The control circuit board is assembled with a clearance in at least one of a planar direction and a thickness direction of the control circuit board with respect to the board housing portion.

  According to a third aspect of the present invention, in the motor according to the second aspect, the motor includes a cover that is assembled to the housing body and closes the insertion hole, and the cover is separate from the control circuit board. The control circuit board is assembled in a non-contact state.

  According to a fourth aspect of the present invention, in the motor according to the second or third aspect, the housing body has a pair of guide grooves extending in an insertion direction for guiding the control circuit board to an inner wall of the board housing portion. The pair of guide grooves is set such that the distance between the bottoms thereof is set larger than the width in the direction perpendicular to the insertion direction in the planar direction of the control circuit board, and the width of each groove is greater than the thickness of the control circuit board. It is set large.

  According to a fifth aspect of the invention, in the motor according to any one of the first to fourth aspects, the control circuit board has an external terminal to which an external terminal of an external connector can be connected, and the housing body Is formed with a connector insertion hole that allows the external terminal to be connected to the external terminal from the outside of the housing body.

  According to a sixth aspect of the present invention, in the motor according to the fifth aspect, the connector insertion hole is closely attached to an inner panel side insertion hole formed in an inner panel of a vehicle door, and the inner panel side insertion is performed. An inner panel sealing member for sealing the hole is provided.

(Function)
According to the first aspect of the present invention, since the control circuit board is assembled with the movement accommodating part in at least one of the planar direction and the thickness direction of the control circuit board with respect to the board housing part, The control circuit board in a state where the board-side connection terminal is not connected to the motor-side connection terminal is movable in at least one of its own plane direction and thickness direction. Thereby, according to the position of the motor side connection terminal of the motor main body assembled | attached to a housing main body, a control circuit board can be arrange | positioned so that the position of a board | substrate side connection terminal may respond | correspond (match). As a result, even if the position of the motor-side connection terminal relative to the housing body is shifted based on manufacturing errors or assembly errors between the housing body and the motor body, the stress generated on the motor-side connection terminal and the board-side connection terminal is reduced ( The control circuit board can be placed (without twisting etc.). In addition, when the control circuit board and the motor body are assembled to the housing body, a displacement of the motor side connection terminal with respect to the housing body and a displacement of the board side connection terminal with respect to the housing body respectively occur. The assembly work can be made easier than in the prior art.

  According to the second aspect of the present invention, the control circuit board is assembled with a clearance in at least one of the planar direction and the thickness direction of the control circuit board with respect to the board housing portion. The control circuit board in a state where the connection terminal is not connected to the motor side connection terminal is movable in at least one of its own plane direction and thickness direction. Thereby, according to the position of the motor side connection terminal of the motor main body assembled | attached to a housing main body, a control circuit board can be arrange | positioned so that the position of a board | substrate side connection terminal may respond | correspond (match). As a result, even if the position of the motor-side connection terminal relative to the housing body is shifted based on manufacturing errors or assembly errors between the housing body and the motor body, the stress generated on the motor-side connection terminal and the board-side connection terminal is reduced ( The control circuit board can be placed (without twisting etc.). In addition, when the control circuit board and the motor body are assembled to the housing body, a displacement of the motor side connection terminal with respect to the housing body and a displacement of the board side connection terminal with respect to the housing body respectively occur. The assembly work can be made easier than in the prior art.

  According to the third aspect of the present invention, the cover that closes the insertion hole is separate from the control circuit board and is assembled to the housing body so as not to be in contact with the control circuit board. In addition, it is assembled in the substrate housing portion with a clearance in the insertion direction in at least its own plane direction. Therefore, the control circuit board in a state where the board-side connection terminal is not connected to the motor-side connection terminal is movable at least in the insertion direction in its own plane direction.

  According to the fourth aspect of the present invention, the housing body has the pair of guide grooves extending in the insertion direction for guiding the control circuit board on the inner wall of the board housing part, so that the control circuit board can be easily placed in the board housing part. Can be arranged. In addition, since the gap between the bottom portions of the pair of guide grooves is set larger than the width in the orthogonal direction of the insertion direction in the planar direction of the control circuit board, the control circuit board is orthogonal to the insertion direction in its planar direction. It is assembled in the substrate housing part with a clearance in the direction. Therefore, the control circuit board in a state where the board-side connection terminal is not connected to the motor-side connection terminal can be moved in a direction orthogonal to the insertion direction in its own plane direction. Further, since the groove widths of the pair of guide grooves are set larger than the thickness of the control circuit board, the control circuit board is assembled in the board housing portion with a clearance in the thickness direction of the control circuit board. Therefore, the control circuit board in a state where the board side connection terminal is not connected to the motor side connection terminal can be moved (tilted) in the thickness direction of the control circuit board. In particular, by applying this configuration to the configuration according to claim 3, the control circuit board in a state where the board side connection terminals are not connected to the motor side connection terminals can be moved (tilted) in all directions. Is done.

  According to the fifth aspect of the present invention, the housing main body is formed with the connector insertion hole that allows the external terminal of the external connector to be connected to the external terminal of the control circuit board from the outside of the housing main body. The terminal can be easily connected to the external terminal.

  According to the invention described in claim 6, the external terminal of the external connector can be easily connected to the external terminal of the control circuit board from the opposite side of the inner panel (that is, the door trim side), and (the inner panel and the outer panel) Even if liquid enters between them, it is possible to prevent the connection portion from being wetted.

  According to the present invention, it is possible to provide a motor capable of facilitating the work of assembling the motor body and the control circuit board to the housing body and reducing the stress generated at the motor side connection terminal and the board side connection terminal. be able to.

  Hereinafter, an embodiment in which the present invention is embodied in a motor 1 of a power window device in a vehicle will be described with reference to FIGS. As shown in FIGS. 1 and 2, the motor 1 includes a motor body 2 and a speed reduction unit 3.

  The motor body 2 includes a yoke housing (hereinafter simply referred to as a yoke) 4 formed in a flat, substantially bottomed cylindrical shape, a pair of magnets 5 fixed to the inner surface of the yoke 4, and is rotatable within the yoke 4. A supported armature 6 (including the rotation shaft 6a), a brush holder 7 (see FIG. 1), and a pair of brushes (not shown) are provided.

  The brush holder 7 is made of a resin material, and is accommodated in the opening of the yoke 4 so as to hold a brush body 7a (see FIG. 1), and a terminal support 7b that protrudes in the axial direction from the opening of the yoke 4 (see FIG. 1). 1 and 3) are integrally formed. The terminal support portion 7b is formed on the side of the rotating shaft 6a (left side in FIG. 1) when viewed from the direction orthogonal to the flat surface 4a of the yoke 4. The brush holder 7 is insert-molded with a plurality of terminals, and the brushes are electrically connected to the base ends of these terminals via pigtails. The tip of the terminal is a motor side connection terminal 11 (see FIGS. 1 and 3), and is supported by the terminal support 7b so as to protrude further in the axial direction from the terminal support 7b. ing. A pair of motor-side connection terminals 11 according to the present embodiment are arranged in parallel along a direction orthogonal to the flat surface 4a of the yoke 4 (in FIG. 1, the direction orthogonal to the plane of the drawing). 1 and 3, only one motor-side connection terminal 11 is illustrated because the motor-side connection terminals 11 are arranged in parallel in the direction perpendicular to the paper surface.

  In addition, a pair of guide columns 7c are formed on the terminal support portion 7b on both sides (separated) of the motor side connection terminal 11 when viewed from the direction orthogonal to the flat surface 4a. The guide column 7c is formed to protrude in the axial direction (downward in FIGS. 1 and 3) longer than the motor side connection terminal 11. Further, the pair of guide pillars 7c are arranged so as to be shifted in the direction perpendicular to the flat surface 4a (see FIG. 5). 5 shows a pair of guide columns 7c as viewed from the axial direction, and the upper side in FIG. 5 corresponds to the front side of the drawing in FIGS. Further, a tapered portion 7d (see FIGS. 3 and 5) is formed at the tip of the guide column 7c (the portion protruding in the axial direction from the motor side connection terminal 11). The tapered portion 7d of the present embodiment is formed on both sides of the guide column 7c in the direction perpendicular to the flat surface 4a and on the side close to each other, and becomes thinner as the guide column 7c approaches the tip (the cross-sectional area is small). Formed). Further, a body seal member 12 made of an elastomer is fixed at a position corresponding to the opening (flange portion 4b) of the yoke 4 in the brush holder 7 of the present embodiment. In addition, a sensor magnet 6b is fixed to the distal end side (lower side in FIGS. 1 and 2) of the rotating shaft 6a of the present embodiment so as to rotate integrally with the rotating shaft 6a.

  The speed reducer 3 includes a housing body (gear housing) 21, a worm shaft 22, a worm wheel 23, a clutch 24, a control circuit board 25 (see FIGS. 1 and 3), a cover 26, and a connector housing 27. Is provided. In the present embodiment, the worm shaft 22 and the worm wheel 23 constitute a speed reduction mechanism.

The housing body 21 is made of a resin material. The housing body 21 includes a fixed portion 21a, a worm accommodating portion 21b, a wheel accommodating portion 21c, and a substrate accommodating portion 21d.
The fixing portion 21 a is formed in a shape corresponding to the flange portion 4 b formed in the opening of the yoke 4 and is fixed to the flange portion 4 b with a screw 28.

  The worm accommodating portion 21b is formed to extend in a cylindrical shape on the extension line of the rotating shaft 6a, and supports the worm shaft 22 in a rotatable manner therein. A clutch 24 for drivingly connecting the worm shaft 22 and the rotary shaft 6a is provided on the motor main body 2 side in the worm housing portion 21b. The clutch 24 operates to lock the rotation of the worm shaft 22 so that the driving force from the rotating shaft 6a is transmitted to the worm shaft 22, and conversely, the driving force from the worm shaft 22 is not transmitted to the rotating shaft 6a. That is, the clutch 24 is provided to prevent the rotation of the rotating shaft 6a due to the force applied from the load side.

  The wheel accommodating part 21c is formed in a flat disk shape in a direction orthogonal to the worm accommodating part 21b, and supports the worm wheel 23 rotatably therein. The worm accommodating portion 21b and the wheel accommodating portion 21c are partially communicated with each other, and the worm shaft 22 and the worm wheel 23 are engaged with each other at the communicating portion. Moreover, the wheel accommodating part 21c is formed on the opposite side (right side in FIG. 1) of the terminal support part 7b with respect to the worm accommodating part 21b. Further, the flat surface 21e of the wheel accommodating portion 21c is formed along the flat surface 4a of the yoke 4, and the surface of the housing body 21 as a whole viewed from the orthogonal direction of the flat surface 21e is called the flat surface of the housing body 21. It will be.

  The substrate housing portion 21d is formed on the side corresponding to the motor side connection terminal 11 (terminal support portion 7b) (the side opposite to the wheel housing portion 21c with respect to the worm housing portion 21b). The inside of the substrate housing portion 21d communicates with a portion corresponding to the sensor magnet 6b. Further, as shown in FIG. 3, the control circuit board 25 can be inserted into the board housing portion 21d from the outside (the direction along the flat surface 21e and inclined with respect to the worm housing portion 21b). An insertion hole 21f is formed. Further, as shown in FIGS. 1 and 7, a rectangular connector insertion hole 21g is formed in the board housing portion 21d as viewed from the penetrating direction penetrating in the direction perpendicular to the flat surface 21e (inside and outside). An annular positioning convex portion 21h is formed around the connector insertion hole 21g on the outer surface of the substrate housing portion 21d.

  The control circuit board 25 is housed in the board housing portion 21d. Specifically, as shown in FIGS. 1 and 3, the control circuit board 25 has a substantially rectangular board body portion 25a and a shape extending from one corner vicinity of the board body portion 25a along one side. Substrate extending portion 25b. The control circuit board 25 is provided with an IC 31, a hall element 32, an external terminal 33, an external connector block 34, a board side connection terminal 35, an internal connector block 36, and the like. The control circuit board 25 of the present embodiment detects the rotational speed of the sensor magnet 6b (rotating shaft 6a) by the Hall element 32 provided at the tip of the board extending portion 25b, and the IC 31 based on the rotational speed and the like. When it is determined that the vehicle window glass has been pinched, a so-called pinching prevention circuit is provided that supplies a reverse rotation current to the motor body 2.

  As shown in FIGS. 1 and 3, the external terminal 33 is provided at a position corresponding to the connector insertion hole 21g. As shown in FIG. 7, the external terminal 33 is fixed by an external connector block 34 so as to extend in the vertical direction with respect to the control circuit board 25. Specifically, the external connector block 34 is composed of four legs 34a (only two are shown in FIG. 7) and a plate portion 34b that is spaced apart from the control circuit board 25 by the legs 34a. The terminal 33 is supported so that it does not fall down at the plate portion 34b by a configuration in which the intermediate portion passes through the plate portion 34b. A block seal member 34c made of an elastic member (e.g., elastomer) is fixed to the outer surface of the plate portion 34b in the external connector block 34.

  As shown in FIGS. 1 and 3, the substrate side connection terminal 35 is provided at a position corresponding to the motor side connection terminal 11. The board-side connection terminal 35 is a female terminal, and is provided so that a male terminal (motor-side connection terminal 11) from the horizontal direction of the control circuit board 25 can be inserted by an internal connector block 36 as shown in FIG. ing. Specifically, the internal connector block 36 is formed in a substantially quadrangular prism shape and is screwed to the control circuit board 25. The board-side connection terminals 35 are respectively housed in a pair of housing portions penetrating in the horizontal direction of the internal connector block 36, and the motor-side connection terminals 11 can be inserted. 11 is sandwiched. A guide recess 36a is formed in a side portion of the internal connector block 36 at a position corresponding to the guide post 7c so that the side halves adjacent to each other of the pair of guide posts 7c are fitted.

  Here, as shown in FIG. 6, a pair of guide grooves 21 i extending in the insertion direction of the control circuit board 25 for guiding the control circuit board 25 is formed on the inner wall of the board housing portion 21 d. FIG. 6 is a schematic cross-sectional view (corresponding to BB in FIG. 4) cut in a direction orthogonal to the insertion direction of the control circuit board 25. As shown in FIGS. 3 and 6, the pair of guide grooves 21 i is set such that the distance between the bottom portions 21 j is larger than the width in the direction perpendicular to the insertion direction in the planar direction of the control circuit board 25. Further, as shown in FIG. 6, the pair of guide grooves 21 i is set such that each groove width H is larger than the thickness of the control circuit board 25.

  The cover 26 is assembled to the housing main body 21 (insertion hole 21f of the substrate housing portion 21d) so as to close the insertion hole 21f. The cover 26 of the present embodiment is made of a metal plate material, and the edge thereof is bent so as to be fitted into the insertion hole 21f. Further, the cover 26 is set to be in a non-contact state with the control circuit board 25 in a state where the cover 26 is assembled to the housing main body 21 (board housing portion 21d). In other words, the control circuit board 25 is set so that the tip of the board extension part 25b comes into contact with the control circuit board 25 inserted to the deepest part of the board housing part 21d. The position where the tip of the protruding portion 25b abuts) and the length to the cover 26 are set sufficiently longer than the length of the control circuit board 25 in the same direction.

  The connector housing 27 is assembled to the housing main body 21 (connector insertion hole 21g of the board accommodating portion 21d). Specifically, as shown in FIG. 7, the connector housing 27 includes a retainer 41 and a grommet 42 as an inner panel sealing member. The retainer 41 is made of a resin material, and includes a retainer main body portion 41a having a substantially bottomed rectangular tube shape, and a retainer flange portion 41b having an outer periphery extending outward from the opening of the retainer main body portion 41a. Further, a fixing claw 41c protruding outward is formed on the outer surface of the retainer main body 41a. The fixing claws 41c are formed so as to protrude gradually from the bottom side of the retainer main body 41a toward the opening side. A through hole is formed at a position corresponding to the external terminal 33 on the bottom of the retainer main body 41a. The inner surface of the retainer main body 41a is formed so that an external connector 43 described later can be fitted therein. The grommet 42 is made of an elastic member (e.g., elastomer), and has a cover cylinder portion 42a that covers the outer surface on the opening side of the retainer claw 41c in the retainer main body portion 41a, and a center on the opening side such as a bottom side surface in the retainer flange portion 41b. The cover flange part 42b which covers except a part and the protrusion cylinder part 42c extended in a substantially cylinder shape (expandable bellows shape) from the cover flange part 42b are provided. Further, a contact flange portion 42d extending outward in the radial direction is formed on the distal end side of the protruding cylindrical portion 42c. The grommet 42 is fixed to the retainer 41 by a covering cylinder portion 42a and a covering flange portion 42b. The connector housing 27 is formed so that the retainer main body 41a can be inserted into the connector insertion hole 21g, and the peripheral wall of the connector insertion hole 21g is covered (covered) between the fixing claw 41c and the retainer flange 41b. It is fixed to the housing body 21 by being clamped (via the flange portion 42b). When the connector housing 27 is fixed, the outer side of the covering flange portion 42b is fitted into the positioning convex portion 21h. Further, when the connector housing 27 is fixed, the bottom portion (the lower surface in FIG. 7) of the retainer main body portion 41a compresses the block seal member 34c on the external connector block 34 in the control circuit board 25 accommodated in the substrate accommodating portion 21d. It is set to be.

  The motor 1 (the motor main body 2, the speed reducing unit 3 (housing main body 21), the control circuit board 25, the cover 26, and the connector housing 27) is assembled as follows in the following order.

  First, the control circuit board 25 is assembled to the housing body 21. That is, the control circuit board 25 is inserted into the board housing part 21d from the outside through the insertion hole 21f. At this time, the control circuit board 25 is guided and inserted into the pair of guide grooves 21i.

  Next, the cover 26 is assembled to the housing body 21. That is, the cover 26 is assembled so as to close the insertion hole 21f of the board housing portion 21d in which the control circuit board 25 is housed.

  Here, in this state, the control circuit board 25 has clearances X1 to X5 (see FIGS. 3 and 6) in the plane direction (each direction) and the thickness direction of the control circuit board 25 with respect to the board housing portion 21d. It will be in the state assembled. Thereby, the control circuit board 25 can be moved (tilted) in all directions.

  Next, the motor body 2 is assembled to the housing body 21. That is, the motor main body 2 is moved in the axial direction of the rotary shaft 6a with respect to the housing main body 21, and is fixed by the screw 28 that passes through the flange portion 4b and is screwed to the fixing portion 21a. At this time, the rotating shaft 6 a is drivingly connected to the worm shaft 22 via the clutch 24. At this time, the guide column 7c is fitted into the guide recess 36a of the internal connector block 36 in the control circuit board 25, and the motor side connection terminal 11 is inserted into the board side connection terminal 35 of the internal connector block 36. Are electrically connected (see FIGS. 3 to 5).

  Here, when the motor main body 2 is assembled to the housing main body 21, the position of the motor side connection terminal 11 relative to the housing main body 21 based on manufacturing errors of the housing main body 21 and the motor main body 2 (brush holder 7), assembling errors thereof, or the like. Deviation may occur (position (including angle) may not be as set). However, in the present embodiment, since the control circuit board 25 can move (tilt) in all directions within the board housing portion 21d, the stress generated in the motor side connection terminal 11 and the board side connection terminal 35 is reduced. The control circuit board 25 can be arranged according to the position of the motor side connection terminal 11 while being small (without twisting or the like). Moreover, since the guide column 7c has a tapered portion 7d that becomes narrower toward the tip at the tip protruding from the motor side connection terminal 11, the motor side connection terminal 11 and the substrate are inserted before the guide column 7c is fitted into the guide recess 36a. Even if the position with respect to the side connection terminal 35 is shifted, the control circuit board 25 is guided (moved and arranged) so as to coincide with the taper portion 7d.

  Next, the connector housing 27 is assembled to the housing body 21. In other words, the retainer body 41a of the connector housing 27 is inserted into the connector insertion hole 21g, and the peripheral wall of the connector insertion hole 21g is sandwiched between the fixing claw 41c and the retainer flange 41b (via the covering flange 42b). As a result, the housing body 21 is fixed. At this time, the external terminal 33 passes through a through hole formed in the bottom of the retainer main body 41a and is led out into the retainer main body 41a. At this time, the block seal member 34c on the external connector block 34 is compressed by the bottom (the lower surface in FIG. 7) of the retainer body 41a. Further, the positional deviation of the external terminal 33 with respect to the housing body 21 is allowed (absorbed) by elastic deformation of the covering cylinder portion 42a and the covering flange portion 42b of the grommet 42.

  The motor 1 assembled as described above is fixed to the inner panel 51 (see FIG. 7) between the inner panel 51 (see FIG. 7) of the vehicle door and the outer panel (not shown). Specifically, the inner panel 51 is formed with an inner panel side insertion hole 51a, the tip of the protruding cylindrical portion 42c of the grommet 42 is fitted into the inner panel side insertion hole 51a, and the periphery of the inner panel side insertion hole 51a. The motor 1 is fixed with a bolt or the like (not shown) so that the contact flange portion 42d is in close contact with the bolt. Then, the external connector 43 is fitted to the retainer main body 41 a from the opposite side of the inner panel 51 (that is, the door trim side), so that the external terminal 43 a provided on the external connector 43 becomes the external terminal 33. Electrically connected. The external terminal 43a is connected to a control device (power supply device) (not shown). An output shaft (not shown) that rotates together with the worm wheel 23 is drivingly connected to the vehicle window glass via a regulator or the like.

Next, characteristic effects of the above embodiment will be described below.
(1) Since the cover 26 that closes the insertion hole 21f is assembled to the housing body 21 so as not to be in contact with the control circuit board 25, the control circuit board 25 has a clearance X1 ( X2) and assembled into the substrate housing portion 21d. Therefore, the control circuit board 25 in a state where the board-side connection terminal 35 is not connected to the motor-side connection terminal 11 is movable in the insertion direction in its own plane direction. Further, useless stress is not always applied from the cover 26.

  Further, the pair of guide grooves 21i are set such that the distance between the bottom portions 21j is larger than the width in the direction perpendicular to the insertion direction in the plane direction of the control circuit board 25. It is assembled in the substrate housing portion 21d with clearances X3 and X4 in a direction orthogonal to the insertion direction. Therefore, the control circuit board 25 in a state where the board-side connection terminal 35 is not connected to the motor-side connection terminal 11 can be moved in a direction orthogonal to the insertion direction in its own plane direction.

  Further, since each groove width H of the pair of guide grooves 21i is set larger than the thickness of the control circuit board 25, the control circuit board 25 has a clearance X5 in its own thickness direction and has a clearance X5 in the board housing portion 21d. Assembled into. Therefore, the control circuit board 25 in a state where the board-side connection terminal 35 is not connected to the motor-side connection terminal 11 can be moved in its thickness direction.

For these reasons, the control circuit board 25 in a state where the board side connection terminal 35 is not connected to the motor side connection terminal 11 (non-fixed) can be moved (including tilted) in all directions.
Therefore, the control circuit board 25 can be arranged so that the position of the board side connection terminal 35 corresponds (matches) according to the position of the motor side connection terminal 11 of the motor body 2 assembled to the housing body 21. As a result, even if the motor-side connection terminal 11 is displaced with respect to the housing body 21 based on manufacturing errors or assembly errors between the housing body 21 and the motor body 2 (brush holder 7), the motor-side connection terminal 11 and the substrate side The control circuit board 25 can be arranged while reducing the stress generated in the connection terminal 35 (without twisting or the like). Further, the assembling work can be facilitated as compared with the prior art in which each terminal is forcibly matched.

  (2) Since the housing body 21 has a pair of guide grooves 21i extending in the insertion direction for guiding the control circuit board 25 on the inner wall of the board housing part 21d, the control circuit board 25 can be easily placed in the board housing part 21d. Can be arranged. That is, the assembling work can be facilitated.

  (3) The guide holder 7c is formed on the brush holder 7 in the motor body 2, and the position of the board-side connection terminal 35 corresponds to (matches) the guide pillar 7c according to the position of the motor-side connection terminal 11. A tapered portion 7d for engaging (moving and arranging) the control circuit board 25 by engaging with the guide recess 36a is formed. Therefore, according to the position of the motor side connection terminal 11 of the motor main body 2 assembled to the housing main body 21, the control circuit board 25 can be easily (to the tapered portion 7d) so that the position of the board side connection terminal 35 corresponds (matches). Can be placed). Therefore, assembly work can be facilitated.

  (4) The housing body 21 is formed with a connector insertion hole 21g that allows the external terminal 43a of the external connector 43 to be connected to the external terminal 33 of the control circuit board 25 from the outside of the housing body 21. 43a can be easily connected to the external terminal 33.

  (5) The connector insertion hole 21g is provided with a grommet 42 which is in close contact with the periphery of the inner panel side insertion hole 51a formed in the inner panel 51 of the vehicle door and seals the inner panel side insertion hole 51a. With this configuration, the external terminal 43a of the external connector 43 can be easily connected to the external terminal 33 of the control circuit board 25 from the opposite side of the inner panel 51 (ie, the door trim side), and (between the inner panel 51 and the outer panel). (Even if liquid intrudes into the liquid), it is possible to prevent the connection portion from getting wet.

  (6) Since the displacement of the external terminal 33 with respect to the housing main body 21 is allowed (absorbed) by elastic deformation of the covering cylinder portion 42a and the covering flange portion 42b of the grommet 42, the motor side connection terminal 11 and the substrate at that portion. It is prevented that the stress generated in the side connection terminal 35 is increased.

The above embodiment may be modified as follows.
In the above embodiment, the control circuit board 25 can be moved by the clearances X1 to X5. However, if the movement of the control circuit board 25 can be permitted, the clearances X1 to X5 may be replaced with another movement permission unit. Good. For example, an elastic member such as an elastomer as a movement allowing portion may be disposed in the clearance X1 between the control circuit board 25 and the cover 26. Even in this case, the control circuit board 25 in a state where the board side connection terminal 35 is not connected to the motor side connection terminal 11 can be moved (including tilted) in all directions. In this way, the elastic member can prevent the control circuit board 25 from being damaged due to the impact. Furthermore, the elastic member in the another example may be a member shared with the member that seals between the insertion hole 21f and the cover. In this way, in addition to the above effects, it is possible to prevent liquid from entering the substrate housing portion without increasing the number of components.

  In the above embodiment, the control circuit board 25 can be moved (including tilted) in all directions, but may be changed as long as it can move in at least one direction. In this case, it is possible to arrange the control circuit board while reducing the stress generated in the motor side connection terminal and the board side connection terminal with respect to the movable direction, and the positional shift in the movable direction is allowed and the assembly work Can be made easy. For example, in the pair of guide grooves 21i in the above embodiment, each groove width H is set to be larger than the thickness of the control circuit board 25. However, the groove width is set to be substantially the same as the thickness of the control circuit board 25. The clearance X5 may not be formed. The clearance X5 (X1 to X4) corresponds to a positional deviation of the motor side connection terminal 11 with respect to the housing main body 21 that occurs based on a manufacturing error or an assembly error between the housing main body 21 and the motor main body 2 (brush holder 7). This is different from a slight clearance or the like for allowing the control circuit board 25 to be inserted.

  In the above embodiment, the housing main body 21 has a pair of guide grooves 21i. However, if the control circuit board 25 can be moved in at least one direction with another configuration, the housing main body 21 is changed to a configuration without the guide grooves 21i. May be.

  In the above embodiment, the guide pillar 7c is formed with the tapered portion 7d, and the control circuit board 25 is guided and arranged in the tapered portion 7d. However, if the same function is provided, other configurations are possible. It may be changed. That is, when one of the motor body and the control circuit board is assembled to the housing body and the other is assembled, the position of the board side connection terminal corresponds to the position of the motor side connection terminal in the motor body ( A tapered portion for guiding the control circuit board so as to match may be provided on at least one of the motor body and the control circuit board. Moreover, you may change to the structure which does not provide the above-mentioned taper part 7d. In this case, it is necessary to move the control circuit board by some other method so that the positions of the motor side connection terminal and the board side connection terminal coincide.

  In the above embodiment, the housing body 21 is formed with the connector insertion hole 21 g that allows the external terminal 43 a of the external connector 43 to be connected to the external terminal 33 of the control circuit board 25 from the outside of the housing body 21. However, the connection structure between the external terminal 43a and the external terminal 33 may be changed to another structure. In addition, when changing, it is preferable to make it the structure which can accept | permit (absorption) the position shift of the external terminal 33 with respect to the housing main body 21. FIG.

  In the above embodiment, the connector insertion hole 21g is closely attached to the periphery of the inner panel side insertion hole 51a formed in the inner panel 51 of the vehicle door, and the grommet 42 for sealing the inner panel side insertion hole 51a. However, the present invention is not limited to this, and it may be changed to a configuration in which sealing is performed with another sealing member.

  In the above embodiment, the control circuit board 25 is assembled to the housing body 21, the cover 26 is assembled to the housing body 21, and then the motor body 2 is assembled to the housing body 21. However, the present invention is not limited to this. For example, after the control circuit board 25 is assembled to the housing body 21, the motor body 2 may be assembled to the housing body 21, and finally the cover 26 may be assembled to the housing body 21. Alternatively, after the housing body and the motor body are assembled, the control circuit board may be assembled, and finally the cover 26 may be assembled to the housing body. In this case, it is necessary to change the orientation of the motor side connection terminal and the board side connection terminal.

  In the above embodiment, the motor 1 of the power window device is embodied, but the motor of another device may be embodied. Of course, the electrical components (the pinching prevention circuit) provided in the control circuit board 25 may be changed according to the apparatus.

The technical idea that can be grasped from the above embodiments will be described below together with the effects thereof.
(A) The motor according to claim 1 or 2, wherein the movement allowing portion or the clearance is provided in all directions of a planar direction and a thickness direction of the control circuit board. If it does in this way, the control circuit board in the state where the board side connection terminal is not connected to the motor side connection terminal can be moved (including tilting) in all directions.

  (B) The motor according to claim 1 or (a), wherein the movement allowing portion includes an elastic member. If it does in this way, in addition to the effect of the invention of Claim 1, the damage etc. based on the impact of a control circuit board can be prevented.

  (C) In the motor according to any one of claims 1 to 6 and (a) and (b) above, after at least one of the motor body and the control circuit board is assembled. When assembling the other, for guiding the control circuit board so that the position of the board side connection terminal corresponds to the position of the motor side connection terminal of the motor body assembled to the housing body A motor having a tapered portion. In this way, according to the position of the motor side connection terminal of the motor body assembled to the housing body, the control circuit board can be easily guided to the taper portion so that the position of the board side connection terminal corresponds (matches). ) Can be arranged.

The exploded plan view of the motor in this Embodiment. The top view of the motor in this Embodiment. Explanatory drawing for demonstrating the board | substrate accommodating part and control circuit board | substrate of this Embodiment. Explanatory drawing for demonstrating the board | substrate accommodating part and control circuit board | substrate of this Embodiment. AA sectional drawing of FIG. The schematic cross section corresponding to BB of FIG. Sectional drawing for demonstrating a connector insertion hole and a connector housing.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 2 ... Motor main body, 6a ... Rotary shaft, 11 ... Motor side connection terminal, 21 ... Housing main body, 21d ... Board | substrate accommodating part, 21f ... Insertion hole, 21g ... Connector insertion hole, 21i ... Guide groove, 21j ... Bottom part, 22 ... Worm shaft constituting part of the speed reduction mechanism, 23 ... Worm wheel constituting part of the speed reduction mechanism, 25 ... Control circuit board, 26 ... Cover, 33 ... External terminal, 35 ... Board side connection terminal, 42 ... Grommet (Sealing member for inner panel), 43a ... external terminal, 51 ... inner panel, 51a ... inner panel side insertion hole, X1-X5 ... clearance, H ... groove width.

Claims (6)

A motor body having a rotating shaft;
A housing body that is assembled to the motor body and houses a speed reduction mechanism for decelerating the rotation of the rotating shaft;
In a motor comprising a control circuit board for controlling the drive of the motor body,
The housing body is formed with a board housing portion for housing the control circuit board and an insertion hole through which the control circuit board can be inserted into the board housing portion from the outside.
The motor body has a motor side connection terminal,
The control circuit board has a board-side connection terminal that can be electrically connected to the motor-side connection terminal in a state assembled in the board housing portion;
The motor according to claim 1, wherein the control circuit board is assembled to the board housing part with a movement allowing part in at least one of a planar direction and a thickness direction of the control circuit board. A motor body having a rotating shaft;
A housing body that is assembled to the motor body and houses a speed reduction mechanism for decelerating the rotation of the rotating shaft;
In a motor comprising a control circuit board for controlling the drive of the motor body,
The housing body is formed with a board housing portion for housing the control circuit board and an insertion hole through which the control circuit board can be inserted into the board housing portion from the outside.
The motor body has a motor side connection terminal,
The control circuit board has a board-side connection terminal that can be electrically connected to the motor-side connection terminal in a state assembled in the board housing portion;
The motor, wherein the control circuit board is assembled with a clearance in at least one of a planar direction and a thickness direction of the control circuit board with respect to the board housing portion. The motor according to claim 2,
A cover that is assembled to the housing body and closes the insertion hole;
The motor is characterized in that the cover is separate from the control circuit board and is assembled so as to be in non-contact with the control circuit board. The motor according to claim 2 or 3,
The housing body has a pair of guide grooves extending in an insertion direction for guiding the control circuit board on an inner wall of the board housing portion,
The pair of guide grooves are set such that the distance between their bottoms is set larger than the width in the direction perpendicular to the insertion direction in the planar direction of the control circuit board, and the width of each groove is set larger than the thickness of the control circuit board. A motor characterized by that. The motor according to any one of claims 1 to 4,
The control circuit board has an external terminal to which an external terminal of an external connector can be connected,
The motor according to claim 1, wherein a connector insertion hole is formed in the housing main body so that the external terminal can be connected to the external terminal from the outside of the housing main body. The motor according to claim 5, wherein
The connector insertion hole is provided with an inner panel sealing member that is in close contact with an inner panel side insertion hole formed in an inner panel of a vehicle door and seals the inner panel side insertion hole. Motor.

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