JP4738861B2 - motor - Google Patents

Description

  The present invention relates to a motor provided with a control circuit member for controlling rotation.

2. Description of the Related Art Conventionally, a motor used in a power window device or the like includes a motor body that generates a rotational force, a speed reduction unit, and a control circuit member for controlling the rotation of the motor body. As such a motor, there is a motor in which a circuit housing portion is formed in a gear housing of a reduction portion, and a control circuit member made of a printed circuit board on which a plurality of electric circuit components are mounted is housed and held in the circuit housing portion. (For example, refer to Patent Document 1). The electric circuit component includes a Hall IC (rotation sensor) that detects a magnetic flux (rotation) of a sensor magnet that is provided so as to rotate integrally with a rotation shaft of the motor body. The control circuit member controls the drive current to the motor body according to the rotation speed detected by the Hall IC (for example, so-called pinching prevention control).
US Pat. No. 5,245,258

  By the way, there are restrictions on the arrangement of specific electrical circuit components, such as the need to arrange the Hall IC in the vicinity of a magnet fixed to the rotating shaft. In the control circuit member using the printed circuit board as described above, each electric circuit component including the Hall IC can be arranged only on the same plane (the degree of freedom of arrangement position is small). It was difficult to dispose the control circuit member in the part. That is, there is a problem that a part of the outer shape of the motor bulges to the outside by the control circuit member, resulting in a substantial increase in size.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a motor in which a control circuit member can be easily disposed in a portion that becomes a dead space.

According to the first aspect of the present invention, a motor main body having a plurality of power supply brushes, a speed reduction unit for reducing the rotation of the motor main body, a control circuit member for controlling the rotation of the motor main body, and an external A motor having a connector part to which a connector can be fitted, wherein the control circuit member is made of a resin material, has a substantially flat plate-like part, and is provided on the base member, at least of which A plurality of terminals, one of which is electrically connected to the power supply brush; and a plurality of electric circuit components disposed on the base member for controlling the rotation of the motor body. The component includes a rotation sensor for detecting the rotation of the motor body and a mold IC, and at least the electric circuit component excluding the rotation sensor is provided on the flat surfaces of the front and back surfaces of the plate-like portion. Each of the mold ICs is provided on one flat surface of the plate-like portion, the terminal of the control circuit member is a connector-side terminal electrically connected to the connector portion, and It has an external connection part connected to the brush side terminal electrically connected to the power supply brush, the external connection part is provided on the other flat surface of the plate-like part, and the base member is one is formed at a position spaced orthogonally from the flat surface possess the rotation sensor further a sensor holding portion which is disposed, said motor main body includes a yoke housing, wherein the connector portion is radially outward of the yoke housing The speed reduction part has a gear housing that accommodates the worm and the worm wheel, and the gear housing accommodates the worm. A wheel housing portion for housing the worm wheel and a circuit housing portion for housing the control circuit member, wherein the circuit housing portion is opposite to the wheel housing portion with respect to the worm housing portion. And located between the worm housing part and the connector part .

In the invention described in 請 Motomeko 2, in the motor according to claim 1, wherein the connector-side terminals, the connector unit and the sensor extends from the connector portion to a portion between the sensor holding part and the connector part The brush-side terminal extends from the inner side of the yoke housing to a portion between the connector portion and the sensor holding portion, and is provided to extend toward the external connection portion at a portion between the holding portion and the holding portion. A portion between the connector portion and the sensor holding portion is provided so as to extend toward the external connection portion.

According to a third aspect of the present invention, in the motor according to the first or second aspect, the sensor holding surface of the sensor holding portion is formed in parallel to the flat surface.
According to a fourth aspect of the present invention, in the motor according to the first or second aspect, the sensor holding surface of the sensor holding portion is formed to be inclined with respect to the flat surface.

According to a fifth aspect of the present invention, in the motor according to the first or second aspect, the sensor holding surface of the sensor holding portion is formed to be orthogonal to the flat surface.
The invention according to claim 6, in the motor according to any one of claims 1 to 5, before Symbol gear housing, an opening which allows insertion of the control circuit member before Kikai path storing portion And the control circuit member can be inserted from a direction parallel to the sensor holding surface of the sensor holding portion.

In the invention described in claim 7, in the motor according to any one of claims 1 to 6, comprising a brush holder for holding the power supply brushes, the brush holder has a front Symbol connector portion, said connector A side terminal and the brush side terminal.

In the invention described in claim 8, in the motor according to any one of claims 1 to 6, wherein the base member has a front Symbol connector.
According to a ninth aspect of the present invention, in the motor according to any one of the first to eighth aspects, the terminal of the control circuit member is embedded in the base member so that a part thereof is exposed to the outside. It was.

(Function)
According to the invention described in the claims, the base member, since made of a resin material, it is possible to its shape readily complex shape with respect to the conventional printed board. Therefore, the rotation sensor can be easily disposed at a position separated from the other electric circuit component (mold IC) in the direction perpendicular to the flat surface of the plate-like portion. As a result, it is possible to easily dispose the control circuit member in a portion that becomes a dead space of the motor.

In addition , it is possible to easily arrange the electric circuit components excluding the rotation sensor in a portion that becomes a dead space of the motor, while easily arranging the rotation sensor having a restriction on the arrangement with respect to the motor. In addition, since the electric circuit components are respectively arranged on the flat surfaces on the front and back of the plate-like part, many electric circuit components can be arranged while reducing the area viewed from the orthogonal direction of the flat surfaces. .

According to the invention described in claim 3 , since the sensor holding surface is formed in parallel to the flat surface, in the motor in which the positional relationship between the rotation sensor and the dead space is set as described above, the sensor holding surface is described in claim 1. The effect of the invention can be obtained. Moreover, since the sensor holding surface is formed in parallel to the flat surface, the rotation sensor provided on the sensor holding surface and the electric circuit components provided on the flat surface can be easily provided from the same direction ( Assembly).

According to the invention described in claim 4 , since the sensor holding surface is formed to be inclined with respect to the flat surface, in the motor in which the positional relationship between the rotation sensor and the dead space is set as described above, The effect of the invention described in 1 can be obtained.

According to the invention described in claim 5 , since the sensor holding surface is formed so as to be orthogonal to the flat surface, in the motor in which the positional relationship between the rotation sensor and the dead space is set. The effect of the invention described in 1 can be obtained.

According to the sixth aspect of the present invention, the gear housing includes a circuit housing portion that houses the control circuit member, and an opening that allows the control circuit member to be inserted into the circuit housing portion. Since it can be inserted from a direction parallel to the sensor holding surface, the control circuit member can be disposed in the dead space of the motor with a small gap. That is, in the configuration in which the sensor holding surface is inserted in a direction that is not parallel to the sensor holding surface, the trajectory through which the sensor holding surface passes becomes large. Therefore, the control circuit member can be disposed in the dead space of the motor while reducing the gap.

According to the seventh aspect of the present invention, the brush holder has a connector portion into which an external connector can be fitted, a connector side terminal, and a brush side terminal. ) Can be easily electrically connected. Further, in this configuration, the specification of the control circuit member (electric circuit component) can be easily changed while making the brush holder including the connector portion common.

According to the eighth aspect of the present invention, the base member has the connector portion into which the external connector can be fitted, so that, for example, the specification of the electric circuit component and the specification of the connector portion can be easily changed simultaneously. Since the base member is made of a resin material and the connector portion can be easily integrally formed, the number of parts and the number of assembling steps are not increased as in the case where the connector portion is provided on a conventional printed board.

According to the invention described in claim 9 , since the terminal is embedded in the base member so that a part of the terminal is exposed to the outside, the terminal is connected to an electric circuit component or the like as compared with the conventional printed circuit board. Can be easily formed. In other words, the connecting portion for connecting to the electric circuit component can be easily formed three-dimensionally (at a position spaced apart from the flat surface in the orthogonal direction) as compared with the printed circuit board.

  ADVANTAGE OF THE INVENTION According to this invention, the motor which can arrange | position a control circuit member easily to the part used as a dead space can be provided.

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

  As shown in FIGS. 1 and 2, the motor main body 2 includes a yoke housing (hereinafter simply referred to as a yoke) 4 formed in a flat, substantially bottomed cylindrical shape, and a pair of magnets 5 fixed to the inner surface of the yoke 4. (See FIG. 2), an armature (armature) 6 that is rotatably supported in the yoke 4, a brush holder 7, and a pair of power supply brushes 8.

  The brush holder 7 is made of a resin material, and a holder body 7a, a flange portion 7b, an extension portion 7c, a connector portion 7d, and a terminal support portion 7e are integrally formed. The holder body 7 a is formed so as to be substantially accommodated in the opening of the yoke 4. A bearing 9 is fixed to the central hole of the holder body 7a, and the tip end side of the rotary shaft 10 of the armature 6 is rotatably supported by the bearing 9. The tip of the rotating shaft 10 protrudes to the outside of the yoke 4, and a sensor magnet 10a is fixed to the protruding portion via a metal plate. A power supply brush 8 is held on the inner side of the yoke 4 in the holder main body 7 a, and the power supply brush 8 is in press contact with a commutator 11 fixed to the rotating shaft 10.

  The flange portion 7b is extended to the holder body 7a in a flange shape (outward in the radial direction with the rotation shaft 10 as an axis center). The extending portion 7c is on one side (the right side in FIGS. 1 and 2) along the flat surface 4a of the yoke 4 in the flange portion 7b (see FIG. 1, in FIG. 1 and FIG. 2, a plane parallel to the paper surface). It is formed so as to protrude from the end portion in the external direction (outside in the radial direction), and a connector portion 7d is formed at the tip portion. The connector portion 7d is formed so that an external connector (not shown) can be fitted from the orthogonal direction of the flat surface 4a (the back side of the paper surface in the direction orthogonal to the paper surface in FIGS. 1 and 2). Further, the terminal support portion 7e is formed so as to extend in the axial direction along the rotation shaft 10 from the extension portion 7c.

  The brush holder 7 has a plurality of brush side terminals 12 and connector side terminals 13 embedded therein (insert molding) as holder terminals. The brush-side terminal 12 extends from the inner side of the yoke 4 in the holder body 7a to the extension portion 7c, and the internal connection terminal 12a, which is the tip of the brush-side terminal 12, extends from the terminal support portion 7e in the axial direction of the motor body 2 (in FIG. Projected (exposed) downward (downward). The power supply brush 8 is electrically connected to the base end portion of the brush side terminal 12 through a pigtail. The connector-side terminal 13 extends from the connector portion 7d to the extending portion 7c, and the internal connection terminal 13a that is the tip thereof protrudes from the terminal support portion 7e in the axial direction of the motor body 2 (downward in FIG. 2) ( Exposed). The base end portion of the connector side terminal 13 is exposed at the connector portion 7d to form an external connection terminal 13b, and is electrically connected to the terminal of the external connector by fitting the external connector to the connector portion 7d. Will be. The internal connection terminals 12a and 13a are arranged side by side along the orthogonal direction of the flat surface 4a (in FIG. 2, the direction orthogonal to the paper surface). In FIG. 2, only one is shown because the internal connection terminals 12a and 13a are arranged side by side in the direction perpendicular to the paper surface. Further, in the brush holder 7, the flange portion 7b, the extending portion 7c, and the connector portion 7d are substantially covered with a waterproof member 14 made of an elastomer, except for portions corresponding to the external connection terminals 13b of the connector portion 7d.

  The speed reduction unit 3 includes a gear housing 21, a worm shaft 22 as a worm, a worm wheel 23, a clutch 24 (see FIG. 2), a control circuit member 25, and a cover 26.

The gear housing 21 is made of a resin material. The gear housing 21 includes a fixed portion 21a, a worm accommodating portion 21b, a wheel accommodating portion 21c, and a circuit accommodating portion 21d.
The fixing portion 21a is formed in a shape corresponding to the flange portion 4b formed in the opening of the yoke 4 and is fixed to the flange portion 4b and the screw 27, and the flange portion 7b of the brush holder 7 together with the flange portion 4b. (Via the waterproof member 14).

  The worm accommodating portion 21b is formed to extend in a cylindrical shape on the extension line of the rotary shaft 10, and supports the worm shaft 22 in a rotatable manner therein. A clutch 24 (see FIG. 2) for drivingly connecting the worm shaft 22 and the rotary shaft 10 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 10 is transmitted to the worm shaft 22 and conversely, the driving force from the worm shaft 22 is not transmitted to the rotating shaft 10. That is, the clutch 24 is provided to prevent the motor 1 from rotating 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. The wheel accommodating portion 21c is formed on the opposite side (left side in FIG. 1) of the connector portion 7d (as the center) with respect to the worm accommodating portion 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 gear housing 21 as viewed from the direction orthogonal to the flat surface 21e is called the flat surface of the gear housing 21. It will be.

  The circuit accommodating part 21d is a position corresponding to the internal connection terminals 12a and 13a, and is formed such that the internal connection terminals 12a and 13a are disposed therein. Specifically, the circuit housing portion 21d is on the opposite side of the wheel housing portion 21c (as the center) with respect to the worm housing portion 21b, and between the worm housing portion 21b and the connector portion 7d (excluding the control circuit member 25). In the configuration, it is formed in a portion that becomes a dead space of the motor 1). The circuit housing portion 21d communicates with the motor body 2 side (the portion corresponding to the sensor magnet 10a) inside the worm housing portion 21b. In addition, an opening 21 f is formed in the circuit housing portion 21 d so that the control circuit member 25 can be inserted from the direction along the axial direction of the rotary shaft 10 in order to accommodate the control circuit member 25. The opening 21f is set so that the opening direction (direction orthogonal to the opening 21f) is inclined with respect to the axial direction of the rotating shaft 10 and the orthogonal direction. The opening portion 21f of the present embodiment is formed in an inclined straight line connecting the connector portion 7d and the tip side of the worm housing portion 21b (opposite side of the motor body 2) when viewed from the direction orthogonal to the flat surface of the gear housing 21. Has been. The internal connection terminals 12a and 13a of the brush side terminal 12 and the connector side terminal 13 are arranged at positions where they are exposed (visible) when viewed from the outside in the opening direction of the opening 21f. And the control circuit member 25 is substantially accommodated in the circuit accommodating part 21d.

  3 to 5, the control circuit member 25 includes a holding member 31, a mold IC 32, a heat sink 33, a plurality of capacitors 34a to 34c, a choke coil 35, a hall IC 36 as a rotation sensor, and the like. In the present embodiment, the mold IC 32, the plurality of capacitors 34a to 34c, the choke coil 35, and the Hall IC 36 constitute a plurality of electric circuit components.

  The holding member 31 includes a base member 41 made of a resin material, and a plurality of terminals 42 (see FIG. 5) disposed on the base member 41 (insert-molded). The base member 41 is a pair of a plate-like portion 41a having a substantially flat shape (plate shape) having a quadrangular shape, and a pair of ridges extending in the direction perpendicular to one flat surface 41b of the plate-like portion 41a from both longitudinal ends of the plate-like portion 41a. Terminal connection bases 41c and 41d, and a sensor holding part 41e extending from one terminal connection base 41c along the longitudinal direction of the plate-like part 41a (outward). In addition, the sensor holding part 41e of this Embodiment is formed through the step part 41f of 2 steps | paragraphs along the standing direction from the terminal connection base 41c. The sensor holding surface 41g, which is a flat surface of the sensor holding portion 41e, is formed at a position spaced apart from the flat surface 41b of the plate-like portion 41a in the orthogonal direction of the flat surface 41b, and the sensor holding surface of the present embodiment. 41g is formed in parallel with the flat surface 41b.

  Further, in the plate-like portion 41a, the one flat surface 41b is erected along the standing direction of the terminal connection bases 41c and 41d (that is, in the direction perpendicular to the flat surface 41b of the plate-like portion 41a). A portion 41h is formed. The mounting portions 41h are formed at four locations (only two are shown in FIG. 3) corresponding to the four corners of the flat surface 41b.

  Further, in the plate-like portion 41a, the other flat surface 41i (behind the flat surface 41b) is along the direction orthogonal to the flat surface 41i (the front side in FIG. 4) as shown in FIG. A standing frame portion 41j and a plurality of component support portions 41k are formed. The frame portion 41j is formed in an annular shape corresponding to (encloses) the choke coil 35 when viewed from the direction orthogonal to the flat surface 41i (see FIG. 4). And in this Embodiment, the inner wall of the frame part 41j comprises the concave collar part 41l in the orthogonal direction of the flat surface 41i. The component support portion 41k corresponds to each of the plurality of capacitors 34a to 34c, and is formed to support the outer periphery of each capacitor 34a to 34c together with the outer wall of the frame portion 41j. Further, a taper portion 41m as a guide portion for guiding the capacitor 34a to the assembly position is formed in a part of the frame portion 41j and a part of the component support portion 41k. The taper portion 41m is inclined from the top of the frame portion 41j and the component support portion 41k toward the flat surface 41i toward the position where the capacitor 34a is assembled as seen from the direction orthogonal to the flat surface 41i (see FIG. 4).

  As shown in FIG. 5, the plurality of terminals 42 are each provided with an IC connection portion 42 a (see FIG. 5), a capacitor connection portion 42 b, and a coil connection that are partially exposed to the outside (of the base member 41). Part 42c, sensor connection part 42d (indicated by a broken line in FIG. 5), external connection part 42e, and the like. The IC connection part 42a is disposed so as to be exposed on the terminal connection bases 41c and 41d. Note that the IC connection portion 42a of the present embodiment is set not to be parallel to the flat surface 41b but to be inclined (3 °). Further, the capacitor connecting portion 42b and the coil connecting portion 42c are disposed so as to be exposed on the flat surface 41b. The capacitor connecting portion 42b and the coil connecting portion 42c have holes corresponding to the holes penetrating the plate-like portion 41a. The sensor connection portion 42d is disposed so as to be exposed on the sensor holding surface 41g. The external connection portion 42e protrudes from the other flat surface 41i of the plate-like portion 41a at a position corresponding to the internal connection terminals 12a and 13a of the brush side terminal 12 and the connector side terminal 13 (see FIG. 2). Established.

  The mold IC 32 has a base portion (package) 51 made of a substantially rectangular resin material in which a semiconductor element is mounted (embedded), and an external portion in a direction along the plane (longitudinal direction) of the base portion 51. A plurality of lead terminals 52 electrically connected to the semiconductor element are drawn out. In addition, the motor 1 of the present embodiment does not include a relay as a drive circuit, and a semiconductor element mounted on the mold IC 32 includes a power MOSFET as a drive circuit. When the mold IC 32 determines that the vehicle window glass has been pinched according to the rotational speed of the sensor magnet 10a (rotary shaft 10) detected by the Hall IC 36, the power supply brush 8 (motor body 2). The anti-pinch control is performed such that a reverse rotation current is supplied to.

  As shown in FIGS. 3 and 5, the mold IC 32 is placed so that the plane of the base portion 51 is disposed on one flat surface 41b of the plate-like portion 41a (specifically, facing the flat surface 41b). Part 41e). And the front-end | tip part of the lead terminal 52 and the IC connection part 42a of the terminal 42 are connected and fixed by welding.

  Moreover, the heat sink 33 is formed in a substantially rectangular flat plate shape from an aluminum alloy. In order to dissipate the heat generated by the mold IC 32 (semiconductor element), the heat sink 33 has its flat surface abutting on the flat surface of the base portion 51 of the mold IC 32 (the flat surface opposite to the side facing the plate-like portion 41a). It is fixed (adhered).

  The capacitors 34a to 34c are disposed on the other flat surface 41i of the plate-like portion 41a as shown in FIGS. The outer circumferences of the capacitors 34a to 34c are in contact with the outer wall of the frame portion 41j and the component support portion 41k, and are supported by the outer wall of the frame portion 41j and the component support portion 41k. Further, when the capacitor 34a is assembled, the capacitor 34a is guided to the assembly position by the tapered portion 41m. Specifically, at the time of assembly, the taper portion 41m is used when the capacitor 34a is brought closer to the flat surface 41i without positioning the capacitor 34a with respect to the assembly position as viewed from the orthogonal direction of the flat surface 41i (see FIG. 4). Thus, the capacitor 34a is guided to the assembly position (by sliding). As shown in FIG. 5, the terminals of the capacitors 34a to 34c are inserted into holes (including the holes of the capacitor connecting portion 42b) penetrating the plate-like portion 41a, and are connected and fixed to the capacitor connecting portion 42b by solder. . This soldering is performed from the flat surface 41b side before the mold IC 32 is fixed.

  Moreover, the choke coil 35 is arrange | positioned on the other flat surface 41i of the plate-shaped part 41a, as shown in FIGS. Specifically, a part of the choke coil 35 is disposed in the flange portion 41l, and is disposed on the flat surface 41i via the hot melt 61 filled in the flange portion 41l. As shown in FIG. 5, the terminal of the choke coil 35 is inserted into a hole (including the hole of the coil connection part 42c) that penetrates the plate-like part 41a, and is connected and fixed to the coil connection part 42c by solder. This soldering is performed from the flat surface 41b side before the mold IC 32 is fixed.

  Further, as shown in FIGS. 3 and 5, the Hall IC 36 is disposed on the sensor holding surface 41g of the sensor holding portion 41e. The terminal of the Hall IC 36 and the sensor connection part 42d of the terminal 42 are connected and fixed by welding. The Hall IC 36 has two Hall elements (not shown) inside.

  The control circuit member 25 configured as described above has the motor main body 2 and the speed reduction portion 3 assembled, and the opening 21f into the gear housing 21 (circuit accommodating portion 21d) and a part thereof to the outside. It is assembled so as to protrude. At this time, the control circuit member 25 is inserted into the opening 21f in a direction parallel to the sensor holding surface 41g (a direction along the sensor holding surface 41g) along the rotation axis 10 of the armature 6. And assembled. And by being assembled in this way, the plurality of external connection portions 42e are electrically connected to the internal connection terminals 12a and 13a (the power supply brush 8 and the connector portion 7d) of the brush side terminal 12 and the connector side terminal 13, respectively. It is arranged to be connectable. The plurality of external connection portions 42e exposed when viewed from the outside in the opening direction of the opening portion 21f are welded and electrically connected to the internal connection terminals 12a and 13a, respectively.

  A metal cover 26 is caulked and fixed to the opening 21f of the gear housing 21 so as to close the opening 21f in a state where the control circuit member 25 is assembled. The cover 26 radiates heat generated by the mold IC 32 to the outside via the heat sink 33.

  The motor 1 for a power window device configured as described above is disposed in a vehicle door, and an output shaft 23a (see FIG. 1) connected to a worm wheel 23 is connected to a vehicle window glass via a regulator (not shown). Is connected to the drive.

Next, characteristic effects of the above embodiment will be described below.
(1) Since the base member 41 having the plate-like portion 41a is made of a resin material, the shape of the base member 41 can be easily made complicated with respect to a conventional printed board. Therefore, at least one of the plurality of electric circuit components (the mold IC 32, the plurality of capacitors 34a to 34c, the choke coil 35, and the Hall IC 36) is replaced with the flat surface 41b of the plate-like portion 41a with respect to the other electric circuit components. , 41i can be easily arranged at positions separated in the orthogonal direction.

  Specifically, in the present embodiment, the base member 41 includes flat surfaces 41b and 41i of the plate-like portion 41a on which the mold IC 32, the plurality of capacitors 34a to 34c and the choke coil 35 are disposed, and the flat surfaces 41b and 41i. And a sensor holding surface 41g on which the Hall IC 36 is disposed at a position separated in the orthogonal direction. Therefore, while the Hall IC 36 having a restriction on the arrangement with respect to the motor 1 is easily arranged in accordance with the restriction, an electric circuit component (a mold IC 32, a plurality of capacitors 34a to 34A) except for the Hall IC 36 is provided in a portion that becomes a dead space of the motor 1. 34c and choke coil 35) can be easily arranged.

  (2) Since the sensor holding surface 41g is formed in parallel to the flat surfaces 41b and 41i, in the motor 1 of the present embodiment in which the positional relationship between the Hall IC 36 (restrictions) and the dead space is set as such. The effects described in (1) above can be obtained. Moreover, since the sensor holding surface 41g is formed parallel to the flat surface 41b, the Hall IC 36 disposed on the sensor holding surface 41g and the mold IC 32 disposed on the flat surface 41b can be easily formed from the same direction. It can be arranged (assembled).

  (3) The gear housing 21 includes a circuit housing portion 21d for housing the control circuit member 25, and an opening 21f through which the control circuit member 25 can be inserted into the circuit housing portion 21d. Since the control circuit member 25 can be inserted from a direction parallel to the holding surface 41g, the control circuit member 25 can be disposed in the dead space of the motor 1 with a small gap. That is, in the configuration in which the control circuit member 25 is inserted from a direction that is not parallel to the sensor holding surface 41g, the trajectory through which the sensor holding surface 41g passes becomes large when the control circuit member 25 is inserted, but the direction parallel to the sensor holding surface 41g. Since the locus becomes small, the control circuit member 25 can be disposed in the dead space of the motor 1 with a small gap.

  (4) The brush holder 7 is a brush that is electrically connected to the connector portion 7d to which an external connector can be fitted, the power supply brush 8 and the connector portion 7d, and to the terminal 42 of the control circuit member 25. A side terminal 12 and a connector side terminal 13 are provided. Therefore, the control circuit member 25 can be easily electrically connected to the power supply brush 8 and the connector portion 7d (external connector). Further, in this configuration, the specification of the control circuit member 25 (electric circuit component) can be easily changed while making the brush holder 7 including the connector portion 7d common.

  (5) Since the terminal 42 is configured to be embedded in the base member 41 so that a part of the terminal 42 is exposed to the outside, the electric circuit components (mold IC 32, a plurality of capacitors 34a to 34c are compared with the conventional printed board. In addition, a connection portion suitable for connection with the choke coil 35 and the Hall IC 36) can be easily formed. In other words, the connecting portion for connecting to the electric circuit component can be easily formed three-dimensionally (at a position spaced apart from the flat surface in the orthogonal direction) as compared with the printed circuit board. In the present embodiment, among the IC connection part 42a, the capacitor connection part 42b, the coil connection part 42c, the sensor connection part 42d, and the external connection part 42e, in particular, the IC connection part 42a and the sensor connection part that are not in the plate-like part 41a. 42d and the external connection part 42e can be formed easily.

  (6) Since the electric circuit components (the mold IC 32, the plurality of capacitors 34a to 34c, and the choke coil 35) are respectively arranged on the flat surfaces 41b and 41i on the front and back of the plate-like portion 41a, the flat surfaces 41b and 41i Many electric circuit components can be disposed while reducing the area viewed from the orthogonal direction.

  (7) The gear housing 21 has a circuit housing portion 21d for housing the control circuit member 25, and the circuit housing portion 21d has a wheel housing portion 21c (worm wheel 23) centered on the worm housing portion 21b (worm shaft 22). It is formed on the opposite side. Therefore, in the configuration excluding the control circuit member 25, the control circuit member 25 is disposed in a portion that becomes a dead space of the motor 1.

  (8) Since the base member 41 includes the component support portion 41k (and the frame portion 41j) for supporting the capacitors 34a to 34c, for example, the capacitors 34a to 34c can be stably held against an external impact. Can do. In addition, since the base member 41 is made of a resin material and the component support part 41k (and the frame part 41j) can be easily integrally formed, the number of parts, the number of assembly steps, etc. Does not increase.

  (9) Since the base member 41 has the tapered portion 41m capable of guiding the capacitor 34a to the assembly position, the capacitor 34a can be easily disposed at the assembly position. In addition, since the base member 41 is made of a resin material and the taper portion 41m can be easily integrally formed, the number of parts, assembly man-hours, and the like do not increase as in the case where the taper portion (guide portion) is provided on the conventional printed circuit board.

  (10) The base member 41 has a flange 41l that is concave in the direction orthogonal to the flat surface 41i, and a portion of the choke coil 35 is disposed in the flange 41l and filled in the flange 41l. It is arranged on the base member 41 (on the flat surface 41 i) via the hot melt 61. Therefore, for example, the stress when the terminal of the choke coil 35 and the terminal 42 are connected and fixed with solder can be absorbed by the hot melt 61. Specifically, in the case where the choke coil 35 is fixed to the base member 41 with a general epoxy adhesive, and the terminal and the terminal 42 are connected and fixed with solder, stress is applied to the solder portion due to thermal shock or the like, causing cracks. However, since the hot melt 61 is more elastic than the adhesive, the hot melt 61 can absorb the stress. Further, since the hot melt 61 is employed, a curing furnace can be made unnecessary and the manufacturing time (tact time) can be shortened as compared with the case where an epoxy adhesive is used.

The above embodiment may be modified as follows.
In the above embodiment, the sensor holding surface 41g is formed in parallel to the flat surfaces 41b and 41i. However, if the sensor holding surface 41g is formed in a position separated from the flat surfaces 41b and 41i in the orthogonal direction, it has another shape. You may change to For example, as shown in FIG. 6, the sensor holding surface 71 may be formed to be inclined with respect to the flat surfaces 41 b and 41 i, and the Hall IC 36 may be disposed on the sensor holding surface 71. For example, as shown in FIG. 7, the sensor holding surface 72 is formed so as to be orthogonal to the flat surfaces 41b and 41i (extend along the orthogonal direction), and a hole is formed on the sensor holding surface 72. An IC 36 may be provided. Even if these changes are made, effects similar to those of the above-described embodiment can be obtained in the motor in which the positional relationship between the Hall IC 36 and the dead space is set. In this case, of course, it is necessary to appropriately change the shape of the terminal 42 and the like in the above embodiment.

  In the above embodiment, the Hall IC 36 is separated from the other electric circuit components (mold IC 32, the plurality of capacitors 34a to 34c, and the choke coil 35) in the direction orthogonal to the flat surfaces 41b and 41i of the plate-like portion 41a. However, the present invention is not limited to this, and the electric circuit components to be separated may be changed. That is, in motors of different types and specifications, the arrangement restrictions of each electric circuit component will be different, but by changing the electric circuit parts to be separated according to the restrictions, the same effect as the above embodiment Can be obtained.

  In the above embodiment, the control circuit member 25 can be inserted from a direction parallel to the sensor holding surface 41g. However, the present invention is not limited to this, and from other directions (directions not parallel to the sensor holding surface 41g). It is good also as a structure which can be inserted and is inserted from another direction.

  In the above embodiment, the brush holder 7 has the connector portion 7d into which the external connector can be fitted. However, the present invention is not limited to this, and the brush holder 7 may be changed to a brush holder in which the connector portion 7d is not formed. . In this case, for example, the base member of the control circuit member may be changed so as to have a connector portion to which an external connector can be fitted. If it does in this way, the specification of an electrical circuit component and the specification of a connector part can be changed simultaneously easily, for example. Further, since the base member is made of a resin material and the connector portion can be easily integrally formed, the number of parts and the number of assembling steps are not increased as in the case where the connector portion is provided on a conventional printed circuit board.

  In the above embodiment, the electric circuit components (mold IC 32, the plurality of capacitors 34a to 34c, and the choke coil 35) are arranged on the flat surfaces 41b and 41i on the front and back of the plate-like portion 41a. Without being limited thereto, the electric circuit component may be arranged only on any one flat surface.

  In the above embodiment, the circuit housing portion 21d of the gear housing 21 is formed on the opposite side of the wheel housing portion 21c (worm wheel 23) around the worm housing portion 21b (worm shaft 22). You may form an accommodating part in another position. That is, although the part which becomes a dead space may differ, such as when it is set as the deceleration part of the structure different from the said embodiment, you may form a circuit accommodating part in the part used as the dead space.

  In the above embodiment, the base member 41 has the component support portion 41k (and the frame portion 41j) for supporting the capacitors 34a to 34c, but other electric circuits such as an oscillator for LIN communication, for example. A component support portion for supporting the component may be formed, or the component support portion 41k may be omitted.

  In the above embodiment, the base member 41 has the tapered portion 41m that can guide the capacitor 34a to the assembly position. However, the base member 41 may form a tapered portion that can guide other electrical circuit components to the assembly position. Then, the taper portion 41m may be omitted. Further, the taper portion 41m may be changed to a guide portion having another shape such as a curved guide portion as long as the electric circuit component can be guided to the assembly position.

  In the above embodiment, the base member 41 has the flange portion 41l, and the choke coil 35 is fixed to the base member 41 (on the flat surface 41i) via the hot melt 61 filled in the flange portion 41l. However, other electric circuit components may be similarly fixed via hot melt, or the choke coil 35 may be fixed with an epoxy adhesive.

  In the above embodiment, the control circuit member 25 is provided with the capacitors 34a to 34c, the choke coil 35, the Hall IC 36, etc., but the control circuit member 25 is not specifically provided (for example, the choke coil 35 is not provided). It may be changed to a control circuit member provided with other components (for example, an oscillator for LIN communication, etc.).

  In the above-described embodiment, the motor 1 used in the power window device is embodied. However, the motor 1 may be embodied in a motor for other devices such as a sunroof motor and a door closer motor.

The technical idea that can be grasped from the above embodiments will be described below together with the effects thereof.
(B) pre-Symbol reducer part includes a gear housing that houses the worm and worm wheel, the gear housing has a circuit housing for housing the control circuit member, the circuit housing portion, said worm wherein it characterized in that it is formed on the opposite side of the worm wheel as the center. If it does in this way, in the structure except a control circuit member, a control circuit member will be arrange | positioned in the part used as the dead space of a motor.

(B) before SL base member, characterized by having a component support portion for supporting said electrical circuit components. In this case, for example, the electric circuit component can be stably held against an external impact. In addition, since the base member is made of a resin material and the component support portion can be easily integrally formed, the number of components, assembly man-hours, and the like do not increase as in the case where the component support portion is provided on a conventional printed board.

(C) before SL base member, you characterized as having a guidable guide portion assembly position said electrical circuit components. If it does in this way, an electric circuit component can be easily arrange | positioned in an assembly position, for example. In addition, since the base member is made of a resin material and the guide portion can be easily integrally formed, the number of parts, assembly man-hours, and the like do not increase as in the case where the guide portion is provided on a conventional printed circuit board.

(D) before Symbol base member, wherein a concave trough in the direction perpendicular to the flat surface, the electrical circuit components, hot to at least a part is disposed within the trough, which is filled in the該桶portion it characterized in that it is fixed to the base member through the melt. In this case, since the electric circuit component is fixed to the base member via the hot melt filled in the collar portion, for example, when the electric circuit component (terminal thereof) and the terminal are connected and fixed by soldering Can be absorbed by hot melt. Specifically, in the case where the electric circuit component is fixed to the base member with a general epoxy adhesive, and the electric circuit component (terminal) and the terminal are connected and fixed by soldering, the solder portion is caused by thermal shock or the like. Although there is a risk that stress is applied and cracks occur, hot melt has higher elasticity than epoxy-based adhesives, so stress can be absorbed by hot melt. In addition, since hot melt is used, a curing furnace can be made unnecessary and the manufacturing time (tact time) can be shortened as compared with the case where an epoxy adhesive is used.

The top view of the motor in this Embodiment. FIG. 2 is a partial cross-sectional view of a motor in the present embodiment. The top view of the control circuit member in this Embodiment. The right view of the control circuit member in this Embodiment. The bottom view of the control circuit member in this Embodiment. The bottom view of the control circuit member in another example. The bottom view of the control circuit member in another example.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 2 ... Motor main body, 3 ... Reduction part, 7 ... Brush holder, 7d ... Connector part, 8 ... Brush for electric power feeding, 12 ... Brush side terminal (holder terminal), 13 ... Connector side terminal (holder terminal), 21 ... Gear housing , 21d ... Circuit housing part, 21f ... Opening part, 22 ... Worm shaft (worm), 23 ... Worm wheel, 25 ... Control circuit member, 32 ... Mold IC (electric circuit component), 34a-34c ... Capacitor 34 (electric circuit) Parts), 35 ... choke coil (electric circuit parts), 36 ... Hall IC (rotation sensor and electric circuit parts), 41 ... base member, 41a ... plate-like part, 41b, 41i ... flat surface, 41g, 71, 72 ... Sensor holding surface, 42 ... terminal.

Claims (9)

A motor main body having a plurality of power supply brushes; a speed reducing portion for reducing the rotation of the motor main body; a control circuit member for controlling the rotation of the motor main body; and a connector portion to which an external connector can be fitted. A motor equipped with
The control circuit member is
A base member made of a resin material and having a substantially flat plate-like portion;
A plurality of terminals provided on the base member, at least one of which is electrically connected to the power supply brush;
A plurality of electric circuit components disposed on the base member for controlling the rotation of the motor body;
The plurality of electric circuit components include a rotation sensor for detecting rotation of the motor body, and a mold IC,
The electric circuit components excluding at least the rotation sensor are respectively arranged on the flat surfaces on the front and back of the plate-like portion,
The mold IC is provided on one flat surface of the plate-like portion,
The terminal of the control circuit member includes a connector side terminal electrically connected to the connector portion and an external connection portion connected to a brush side terminal electrically connected to the power supply brush. The external connection portion is provided on the other flat surface of the plate-like portion;
It said base member further have a sensor holding portion to which the rotation sensor is formed at a position spaced orthogonally from the one flat surface is provided,
The motor body includes a yoke housing;
The connector portion is located on the radially outer side of the yoke housing,
The speed reduction part has a gear housing that houses a worm and a worm wheel,
The gear housing includes a worm housing portion that houses the worm, a wheel housing portion that houses the worm wheel, and a circuit housing portion that houses the control circuit member,
The motor , wherein the circuit housing part is located on the opposite side of the wheel housing part with respect to the worm housing part and between the worm housing part and the connector part . The motor according to claim 1 ,
The connector-side terminal is provided so as to extend from the connector portion to a portion between the connector portion and the sensor holding portion and to extend toward the external connection portion at a portion between the connector portion and the sensor holding portion. ,
The brush side terminal extends from the inner side of the yoke housing to a portion between the connector portion and the sensor holding portion, and extends to the external connection portion side at a portion between the connector portion and the sensor holding portion. A motor characterized in that it is provided in a motor. The motor according to claim 1 or 2 ,
The sensor holding surface of the said sensor holding part was formed in parallel with the said flat surface, The motor characterized by the above-mentioned. The motor according to claim 1 or 2 ,
The sensor holding surface of the said sensor holding part was formed so that it might incline with respect to the said flat surface, The motor characterized by the above-mentioned. The motor according to claim 1 or 2 ,
The sensor holding surface of the sensor holding part is formed so as to be orthogonal to the flat surface. The motor according to any one of claims 1 to 5 ,
Before Symbol gear housing has an opening which allows insertion of the control circuit member before Kikai path storing unit, wherein the control circuit member is capable of being inserted from the sensor holding surface parallel to the direction of the sensor holding portion A motor characterized by that. The motor according to any one of claims 1 to 6 ,
A brush holder for holding the power supply brush;
The brush holder, the motor characterized in that it comprises a front Symbol connector, the connector-side terminal and the brush-side terminals. The motor according to any one of claims 1 to 6 ,
The base member is a motor and having a front Symbol connector. The motor according to any one of claims 1 to 8 ,
The motor according to claim 1, wherein the terminal of the control circuit member is embedded in the base member so that a part of the terminal is exposed to the outside.

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