JP2007028693A - Electric motor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain an electric motor for power window in which a connector unit 14 is made compact by providing electric elements 21, 22 and 22a constituting a feeding section 20 independently from a rotation control circuit section when the connector unit 14 connected externally is inserted and attached to a housing 10. <P>SOLUTION: A base member is formed integrally with the connector unit 14 and provided with terminal members 18, 19, 24 and 29 for feeding and for the rotation control circuit section. Electric elements 21, 22 and 22a constituting the feeding section are connected with the terminal members 18 and 24 for feeding provided in the base member 16. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention belongs to the technical field of electric motors such as power window motors mounted on vehicles.

For example, an electric motor such as an electric motor used for this type of power window is provided in a door, and thus needs to be installed in a narrow installation space. In recent years, an increase in the number of rotation control circuit units for controlling an electric motor provided integrally with the electric motor has been increasing. In other words, such an electric motor is required to be compactly incorporated with a power supply unit for supplying power to the motor unit and a rotation control circuit unit for controlling the rotation of the electric motor for controlling opening and closing of the window glass. The Therefore, the rotation control circuit unit is incorporated in the connector unit provided with the power supply unit, and a terminal member connected to supply power to the motor unit in a state separate from the rotation control circuit unit is provided. There is one in which the rotation control circuit unit can be incorporated together with the electrical connection of the terminal member connected to the motor unit with the motor unit side by assembling the unit to the motor housing (for example, Patent Document 1).
JP 2001-268841 A

  By the way, in the conventional device, the size of the rotation control circuit is determined to some extent by the number of electric elements (including electronic elements; the same applies hereinafter) provided in the rotation control circuit unit. There was a limit to compactness. In addition, since the rotation control circuit and the power supply circuit are electrically independent, when a power supply electrical element is interposed, a component arrangement structure dedicated to the power supply unit is adopted separately from the circuit board. Again, there is a problem that the compactness is hindered, and there are problems to be solved by the present invention.

The present invention was created in view of the above-described circumstances in order to solve these problems, and the invention of claim 1 is an opening established in a motor housing assembled to a yoke opening of a motor section. In addition, in an electric motor incorporating a connector unit provided with a connector unit for external connection, an insulation unit formed integrally with the connector unit is provided when the motor unit power supply unit and the rotation control circuit unit are provided in the connector unit. A terminal member electrically connected to the power supply portion and the rotation control circuit portion is provided in the base member, and an electric element constituting the power supply portion is electrically connected to the terminal member. It is an electric motor.
The invention of claim 2 is characterized in that, in claim 1, the terminal member is embedded in the base member in a state where a part thereof is exposed, and an electric element is electrically connected to the exposed portion of the terminal member. It is an electric motor.
According to a third aspect of the present invention, in the first or second aspect, the rotation control circuit unit is disposed to face the base member with a gap and is electrically connected to the terminal member. It is an electric motor.
A fourth aspect of the present invention provides the rotation detection circuit unit according to any one of the first to third aspects, wherein the rotation control circuit unit is disposed on the plate-like substrate so as to face the detection target provided on the armature shaft, An electric motor comprising: a substrate circuit unit configured to control rotation of the electric motor based on detection by the rotation detection unit.
According to a fifth aspect of the present invention, in any one of the first to fourth aspects, the terminal member is connected to an electric element for rotationally driving the motor unit and connected to supply power to the motor unit. And a terminal member connected to the rotation control circuit portion is provided at the base end portion and the tip end portion of the base member in the motor housing insertion direction. An electric motor characterized in that it is electrically connected to the part.
According to a sixth aspect of the present invention, in the fifth aspect, the power supply portion provided in the base member for supplying power to the motor portion is provided on the base member so as to be biased toward the front end side of the base member in the motor housing insertion direction. The electric motor is characterized.
According to a seventh aspect of the present invention, in the fifth or sixth aspect, the power supply portion provided in the base member for supplying power to the motor portion is provided on the distal end side and the proximal end side of the base member so as to be connected to the rotation control circuit portion. An electric motor characterized by being disposed between terminal members.

According to the first aspect of the present invention, the base member integrated with the externally connected connector unit is provided with a terminal member for the power feeding portion and the rotation control circuit portion, and the terminal member is further provided with the electric power of the power feeding portion. Since the elements are connected, the compactness of these members can be achieved.
By setting it as invention of Claim 2, the connection to the terminal member of the electric element which comprises a electric power feeding part becomes easy.
According to the third aspect of the present invention, the rotation control circuit portion has a two-stage arrangement structure in which the rotation control circuit portion is arranged to face the base member, and the connector unit can be made compact.
According to the invention of claim 4, the rotation control circuit unit arranges the rotation detection unit for detecting rotation and the base circuit unit for controlling rotation on a single substrate. As a result, the structure can be simplified.
According to the fifth aspect of the present invention, the terminal member connected to the rotation control circuit unit is arranged at both ends of the base member in the housing insertion direction, and the rotation control circuit unit is used as the terminal member. Thus, the base member can be firmly supported.
According to the sixth aspect of the present invention, the electrical connection between the power supply unit for supplying power to the motor unit and the motor unit side is simplified and can be firmly fixed.
According to the invention of claim 7, the power feeding portion for feeding power to the motor portion is sandwiched between the front and rear in the insertion direction by the terminal member connected to the rotation control circuit portion, so that reliable protection is achieved.

  Next, embodiments of the present invention will be described with reference to the drawings. In the figure, reference numeral 1 denotes a motor assembly for a power window. The motor assembly 1 includes a motor part 2 and a speed reduction part 3. The motor part 2 includes a yoke 4 having a bottomed cylindrical shape, and the yoke. An armature 8 composed of a rotating shaft (armature shaft) 5 whose one end is pivotally supported at the bottom of the cylinder 4, a commutator 6, an armature 7 around which a coil is wound, and the like, and a yoke 4 It is comprised using various members, such as the permanent magnet 9 fixed to a surrounding surface and facing the armature 7.

  On the other hand, the speed reduction part 3 is assembled in a flat box-like housing (motor housing) 10 which is incorporated into the opening end 4a of the yoke 4 in a butted manner and rotatably supports the tip of the rotating shaft 5, and a rotating shaft. Various members such as a worm wheel 11 that meshes with a worm gear 5 a engraved on the tip side of 5, an output shaft 12 that is provided on the worm wheel 11 and protrudes from the housing 10, and a cover 13 that covers the worm wheel 11. However, the housing 10 is attached by being inserted and assembled in a direction perpendicular to the axis of the rotating shaft 5 from the side opposite to the side where the worm wheel 11 is disposed with the rotating shaft 5 interposed therebetween. A connector unit 14 is provided.

  The connector unit 14 has a waterproof function for inserting and incorporating an external coupler (not shown) from the other side (the cover 13 side) opposite to the one side from which the output shaft 12 protrudes, and an external connection terminal to be described later The connector portion 15 provided with the members 18 and 19 and the base member 16 extending in the insertion direction of the connector unit 14 are integrally formed (molded with an insulating resin material). A space between the base member 16 and the connector portion 15 is opposite to the side on which the worm wheel 11 of the housing 10 is disposed, and is applied to an opening 10a provided above in FIG. In order to fix the connector unit 14 to the housing 10 using 17, a hook-like fixing portion 14 a is provided.

  The base member 16 is loosely assembled in the housing 10 in a state of being biased to one side of the housing (lower side in the insertion direction of the external coupler) in the housing 10 with the connector unit 14 inserted and assembled in the housing 10. However, the base member 16 is embedded with the terminal members 18 and 19 continuing from the connector portion 15, and among these terminal members, a part of the terminal member 18 for the power feeding portion 20 is the base member 16. The exposed portion 18b is configured to be an electric element (which is an electric component including an electronic element if necessary, and a drive system element that rotationally drives the electric motor. The same applies hereinafter). The in-vehicle relay 21 and capacitors (for example, aluminum electrolytic capacitors) 22 and 22a which are part of the It has been continued. Incidentally, in the present embodiment, the exposed portion 18b is configured by forming a hole-like portion in the base member 16, but the terminal member 18 is bent into an inverted U shape, and the bent portion is used as a base. It can also be configured to protrude from the surface of the member 16. The in-vehicle relay 21 is connected to a pair of power supply terminals 24 for supplying power to a brush 23a provided in the brush holder 23 of the motor unit 2. The power supply terminals 24 are connected to the in-vehicle relay 21 and a capacitor. A notch 24b is formed in the terminal portion 24a at the projecting tip, and the connector unit 14 is inserted and incorporated into the housing 10, so that the brush 23a is attached to the brush holder 23 in the notch 24b. By inserting a pair of connection terminals 23b provided so as to be electrically connected to each other, the power supply terminal 24 and the brush 23a are electrically connected.

  Reference numeral 25 denotes a rotation control circuit unit, and the rotation control circuit unit 25 is arranged to face the base member 16 with a gap on the upper side in the external coupler insertion direction. The electronic elements 21, 22, and 22 a of the power feeding unit 20 are arranged between the base member 16 and the rotation control circuit unit 25, but the rotation control circuit unit 25 has a gap in the base member 16. A rotation detection sensor 27 disposed opposite to a permanent magnet (detected body) 5 b provided on the armature shaft 5 on a plate-like substrate 26 arranged in parallel, and for rotation detection by the rotation detection sensor 27. In this embodiment, the substrate circuit unit 28 is formed on both surfaces of the substrate 26. The substrate circuit unit 28 is configured to control the rotation of the motor unit 2 based on the circuit configuration.

  In addition to the terminal member 19 (four in the present embodiment) for connecting the rotation control circuit unit 25 and the terminal member 18 for power supply (two in the present embodiment), the base circuit unit 28 is also supplied with power. The rotation control circuit connection terminal members 29 (two in this embodiment) connected to the unit 20 (specifically, connected to the in-vehicle relay 21 and the capacitor 22a) are electrically connected. 18, 19, and 29, the terminal members 18 and 19 disposed on the connector unit 15 are aligned in a line with respect to the power feeding unit 20 on the upper side in the insertion direction of the connector unit 14, that is, at the base end side position. Projecting from the base member 16 toward the rotation control circuit section 25 side, the projecting tips of the projecting sections 18 a and 19 a are electrically connected to the rotation control circuit section 25. On the other hand, the terminal member 29 connected to the power supply unit 20 is aligned with the rotation control circuit unit 25 from the base member 16 in a state of being aligned with the power supply unit 20 on the lower side in the insertion direction of the connector unit 14, that is, at the tip end side position. The protrusion tip of the protrusion 29 a is electrically connected to the rotation control circuit portion 25. By doing so, the rotation control circuit unit 25 is such that the projecting portions 18a, 19a, 29a of these terminal members 18, 19, 29 serve as bus bars and are integrally supported by the base member 16, and the power feeding unit 20 The connector unit insertion direction both ends are surrounded and protected by bus bars 18a, 19a, 29a. Incidentally, in the present embodiment, each of the electrical connections is made by soldering. However, the present invention is not limited to this. For example, the connection terminal of the electrical component is forcibly press-fitted into the connection hole formed in the terminal member. It goes without saying that a press-fit connection can also be used.

  In the embodiment of the present invention configured as described above, the connector unit 14 is integrally formed with a base member 16 extending in the insertion direction of the connector unit 14 into the housing 10 and disposed in the housing 10. The base member 16 is provided with terminal members 18, 19, 24, and 29 for the power feeding unit 20 and the rotation control circuit unit 25, and the power feeding unit 20 is formed on the terminal members 18, 19, and 24 for the power feeding unit. The electrical elements 21, 22, and 22a to be connected are connected, so that these members can be made compact.

  Moreover, the rotation control circuit unit 25 has a two-stage arrangement structure that is opposed to the base member 16 with a gap therebetween, and is electrically connected to the terminal members 18, 19, and 29. The portion 25 can be firmly supported, and the connector unit 14 can be made compact. In addition, electrical connection of the electric elements 21, 22, 22a to the base member 16 side is performed by providing an exposed portion 18b partially exposed from the base member 16 in the terminal member 18 embedded in the base member 16, and exposing the electric element 21, 22, 22a to the base member 16 side. Since the electric elements 21, 22, 22a are electrically connected to the portion 18b, the electric connection of the electric elements to the terminal member 18 is facilitated.

  The rotation control circuit unit 25 controls the rotation of the electric motor on the substrate 26 based on the rotation detection sensor 27 that detects the rotation of the permanent magnet 5 b provided on the armature shaft 5 and the rotation detection by the rotation detection sensor 27. Therefore, it is possible to arrange the related ones for performing the rotation control based on the rotation detection in a compact manner and to simplify the structure. it can.

  Furthermore, the terminal members 18, 19, 24, and 29 are a terminal member 18 connected to an electric element for rotationally driving the motor unit, a terminal member 24 for supplying power to the motor unit, and a rotation control circuit unit 25. There are three types of terminal members 18, 19, and 29 connected to the terminal member 18, 19, and 29 connected to the rotation control circuit unit 25, and the base member 16 has a distal end side and a proximal end side in the housing insertion direction. As a result, the rotation control circuit unit 25 can be reliably supported on the base member 16 by effectively using the terminal members 18, 19, and 29.

In this case, since the power feeding unit 20 for feeding power to the motor unit 2 is biased to the front end side of the base member 16 in the motor housing insertion direction, the power feeding unit 20 and the motor unit 2 side While the electrical connection of the power supply unit 20 is simplified and firmly fixed, the power supply unit 20 is sandwiched between the front and rear terminals 18, 19, and 29 that are electrically connected to the rotation control circuit unit 25. Moreover, as a result of the provision of a protective structure that is located in the space formed by the base member 16 and the rotation control circuit portion 26 and is surrounded by the surroundings, the power supply portion 20 can be protected also here. become.
Needless to say, the present invention is not limited to the above-described embodiment, and can be modified into various structures. For example, in the embodiment, the terminal members 18 and 19 are embedded in the base member. However, the terminal members 18 and 19 may be laid on the base member 16.

It is a front view of a motor assembly. It is sectional drawing of a motor assembly. It is a rear view which shows the relationship between a connector unit and a brush holder stay. It is the perspective view seen from the base member side which shows the relationship between a connector unit and a brush holder stay. It is the perspective view seen from the rotation control circuit part side which shows the relationship between a connector unit and a brush holder stay. It is a front view of a connector unit. It is a rear view of a connector unit. It is a perspective view of a connector unit. It is a perspective view which shows the wiring state of the state which abbreviate | omitted the base member of the connector unit. It is one side view of a connector unit. It is the other side view of a connector unit. It is the figure which looked at the principal part of the base part from the rotation control circuit part side.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Motor unit 2 Motor part 3 Deceleration part 4 Yoke 5 Armature shaft 9 Permanent magnet 10 Housing 14 Connector unit 15 Connector part 16 Base member 18, 19 Terminal member 18a, 19a Protrusion part 20 Power supply part 21 In-vehicle relay 22, 22a Capacitor 25 Rotation Control circuit part 26 Board 27 Rotation detection sensor 28 Circuit board

Claims (7)

  In an electric motor in which a connector unit provided with a connector part for external connection is incorporated in an opening established in a motor housing assembled to a yoke opening of the motor part, the power feeding part for the motor part and rotation control are incorporated in the connector unit. In providing the circuit portion, the insulating base member integrally formed with the connector unit is provided with a terminal member electrically connected to the power feeding portion and the rotation control circuit portion, and the power feeding portion is provided on the terminal member. An electric motor characterized by electrically connecting electric elements constituting the motor.   2. The electric motor according to claim 1, wherein the terminal member is embedded in the base member with a part thereof exposed, and an electric element is electrically connected to the exposed portion of the terminal member.   3. The electric motor according to claim 1, wherein the rotation control circuit unit is disposed to face the base member with a gap and is electrically connected to the terminal member.   The rotation control circuit unit according to any one of claims 1 to 3, wherein the rotation control circuit unit is provided on a plate-like substrate so as to be opposed to a detection object provided on the armature shaft, and for detection by the rotation detection unit. An electric motor comprising: a substrate circuit unit configured to control rotation of the electric motor based on the circuit board unit.   5. The terminal member according to claim 1, wherein the terminal member is connected to an electric element for rotationally driving the motor unit, connected to supply power to the motor unit, and the rotation control circuit unit. The terminal member connected to the rotation control circuit portion is provided at the base end portion and the tip end portion of the base member in the motor housing insertion direction and is electrically connected to the rotation control circuit portion. An electric motor characterized by that.   6. The electric motor according to claim 5, wherein the power supply portion provided on the base member for supplying power to the motor portion is provided on the base member so as to be biased toward the front end side of the base member in the motor housing insertion direction.   7. The power feeding unit provided in the base member for feeding power to the motor unit according to claim 5 is located between the terminal members provided on the distal end side and the base end side of the base member to be connected to the rotation control circuit unit. An electric motor characterized by being arranged.

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