JP2003143812A - Electric motor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain cost reduction in an electric motor. SOLUTION: The body 21 of this electric motor comprises a sensor unit 52 having two hole-ICs, two motor power terminals 43, 44, a sensor power terminal 54, a sensor ground terminal 55, and sensor output terminals 56, 57. Further, the body 21 includes a motor side connector 58 having a common power connection terminal 59 connected to the motor power terminal 43 and the sensor power terminal 54, a motor power connection terminal 60 connected to the motor power terminal 44, a sensor ground connection terminal 61 connected to the sensor ground terminal 55, and a sensor output connection terminal 62 connected to the sensor output terminal 56. Furthermore, a regulator motor 20 is structured to be connected with a control section including a control section side connector having hour connection terminals.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric motor having a connector connected to a control unit.

[0002]

2. Description of the Related Art Conventionally, there is known an electric motor provided with a sensor for detecting a rotation speed or a rotation angle of an output shaft. Such an electric motor requires rotation speed control and position control. Widely used in some cases.

For example, a regulator motor is used as a drive source of a regulator for controlling the opening and closing of a window glass in a window glass lifting system provided on a door of a vehicle, and this regulator motor is provided with a magnetic rotation sensor. ing. The rotation sensor has a permanent magnet fixed to the output shaft and a sensor unit facing the permanent magnet. The sensor unit reacts to the magnetic pole of the permanent magnet that changes as the output shaft rotates, and A detection signal corresponding to the rotation speed is output. This detection signal is input to a control unit provided separately from the motor body, and the control unit determines the opening / closing speed of the windshield based on the rotation speed or the rotation angle of the output shaft obtained from the detection signal. When the window glass is kept constant or the window is automatically opened and closed by an auto switch, the stop position of the window glass is controlled.

Such a regulator motor has two motor power supply terminals, a sensor ground terminal for a rotation sensor, and a sensor output terminal, and these four terminals respectively correspond to four corresponding terminals via lead wires. It is connected to a motor side connector having a connection terminal. Further, the control unit has a control unit side connector connected to this motor side connector, the regulator motor and the control unit are connected via these connectors, and the power supply between the regulator motor and the control unit and The pulse signal is transmitted.

On the other hand, some of such window glass lifting systems are provided with a trapping detection function. The trapping detection function is to prevent foreign matter from being trapped between the window glass and the vehicle body when the window glass is automatically closed by the auto switch.

In this case, the trapping is detected by detecting the decrease in the rotation speed of the regulator motor, so that the trapping detection function only works when the window glass is operated in the closing direction. . Therefore, it is necessary for the regulator motor to detect its rotation direction as well as its rotation speed.
Therefore, two Hall ICs are used as the rotation sensor, and these Hall ICs are arranged so that the output timings of their pulse signals have a phase difference of 90 degrees,
The rotation direction is detected from the output timing of the pulse signal output by each. And the control unit
If the rotation direction of the output shaft is the direction to close the window glass, and if it is detected that the rotation speed has decreased before the window glass is fully closed, it is determined that foreign matter has been caught and the regulator motor It is designed to stop rotation.

A regulator motor having such two Hall ICs has two motor power supply terminals and a Hall IC.
Has a sensor power supply terminal, a sensor ground terminal, and two sensor output terminals, and these six terminals are respectively connected to the motor side connector having the corresponding six connection terminals via lead wires. Therefore, the control unit side connector of the control unit used for the regulator motor having the trapping detection function is provided with a connector having six connection terminals corresponding to the motor side connector.

[0008]

As described above, the regulator motor having the trapping detection function has two holes I.
C is provided, but in order to reduce the cost due to diversion, use this regulator motor only in one of the Hall ICs to detect only the rotation speed, and use it in a windshield lifting system that does not have a trapping detection function. Is possible.

However, in this case, the number of connecting terminals provided on the connector of the regulator motor having the trapping detection function as described above is six, and it is not possible to make a connection with the control unit having no trapping detection function. . Further, in a regulator motor provided with two Hall ICs, even when only one of the Hall ICs is used, the number of terminals is two in addition to the motor power supply terminals, the sensor power supply terminals for the Hall ICs, Three terminals, a sensor ground terminal and a sensor output terminal, are required, and a connector requires a total of five connection terminals. Therefore, there is no compatibility between regulator motors that have a trapping detection function and regulator motors that do not have a trapping detection function. However, it is necessary to newly set the control unit in accordance with this, and it is not possible to sufficiently obtain the cost reduction effect due to the diversion.

It is an object of the present invention to reduce the cost of electric motors.

[0011]

The electric motor of the present invention comprises:
An electric motor having a sensor member that outputs a detection signal according to the rotation of an output shaft, the motor main body having five terminals of two motor power supply terminals, a sensor power supply terminal, a sensor ground terminal, and a sensor output terminal, and one Common power supply connection terminal connected to the motor power supply terminal and the sensor power supply terminal, a motor power supply connection terminal connected to the other motor power supply terminal, a sensor ground connection terminal connected to the sensor ground terminal, and the sensor A motor-side connector having four connection terminals of sensor output connection terminals connected to the output terminals, the motor-side connector including two motor power supply terminals, a sensor ground terminal, and a sensor output terminal.
It is characterized in that it can be connected to a motor body having two terminals.

The electric motor of the present invention is characterized in that the sensor member operates when the common power supply ground terminal is on the high potential side.

The electric motor of the present invention is characterized in that the output shaft drives an opening / closing member provided in a vehicle in an opening / closing direction.

The electric motor of the present invention is characterized in that it is driven in a direction in which the opening / closing body opens when the common power supply ground terminal is on the high potential side.

According to the present invention, the motor main body having the five terminals of the two motor power source terminals, the sensor power source terminal, the sensor ground terminal and the sensor output terminal is connected to the common power source connection terminal, the motor power source connection terminal and the sensor ground terminal. Since a motor-side connector having four connection terminals, that is, a terminal and a sensor output connection terminal, can be connected, the compatibility of a control unit having four connection terminals can be improved and the cost of this electric motor can be reduced. .

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a perspective view showing an outline of a door glass raising / lowering system having a regulator motor according to an embodiment of the present invention, and FIG. 2 is a partially cutaway sectional view showing details of the regulator motor shown in FIG. It is a figure. Also, FIG.
2 is a circuit diagram showing wiring of the regulator motor shown in FIG. 1, and FIG. 4 is a perspective view showing details of the rotation sensor shown in FIG.

The door glass lifting system 1 shown in FIG.
A front door 2 mounted on a vehicle (not shown) so as to be openable and closable
The window glass 3 is attached to the window glass 3 to move up and down, that is, to open and close, and is composed of a guide member 4, a window regulator 5, and a control unit 6.

The guide member 4 is fixed to two glass guides 7 fixed to the vehicle front side of the front door 2, that is, the left side in the figure and the vehicle rear side of the front door 2, that is, the right side in the figure, and the upper end side of the front door 2. The windshield 3 is provided with two stabilizers 8 and 9, and a slider portion 7a of each glass guide 7 is provided at the lower end portion of the window glass 3.
Is fixed. Each slider portion 7a is movable up and down in the figure along each glass guide 7,
The window glass 3 is guided between the position shown by the solid line in the figure and the position shown by the alternate long and short dash line in the figure. Also,
The respective stabilizers 8 and 9 are adapted to be in sliding contact with the surface of the window glass 3 to maintain the attitude of the window glass 3.

The window regulator 5 is of the X-arm type and has a lift arm 10 and an equalizer arm 11 which are connected to each other in an X-shape.

The lift arm 10 is formed in the shape of an elongated plate having a tip portion 10a and a root portion 10b. The lift arm 10 is pivotally supported by the main bracket 12 fixed to the front door 2 on the root portion 10b side, and the tip portion is formed. 10a can swing up and down in the front door 2. Also, the base 1
A driven gear 13 formed in a fan shape is fixed to 0b.

The equalizer arm 11 forms an X arm together with the lift arm 10 by having a connecting shaft 11a provided at the substantially center part thereof pivotally supported at the substantially center part of the lift arm 10. Further, the equalizer arm 11 has a first arm portion 11b located outside the vehicle with respect to the lift arm 10 and a second arm portion 11c located inside the vehicle interior with respect to the lift arm 10. , The arm portions 11b and 11c are connected to the connecting shaft 11
They are connected to each other by a and are integrated.

Rollers (not shown) are rotatably mounted on the tip portion 10a of the lift arm 10 and the tip portion 11d of the equalizer arm 11 on the side of the first arm portion 11b, and these rollers are guided by a roller guide 14. It is engaged with the groove 14a and is movable along the guide groove 14a. Further, a roller (not shown) is rotatably mounted on a tip portion (not shown) of the equalizer arm 11 on the side of the second arm portion 11c, and the roller is fitted in a guide groove 15a of a roller guide 15 fixed to the front door 2. It is engaged and movable along this guide groove 15a. Therefore, by swinging the lift arm 10, the roller guide 14 moves vertically in the drawing. That is, when the lift arm 10 swings between the position shown by the solid line in the drawing and the position shown by the dashed line in the drawing, the roller guide 14 moves between the position shown by the solid line in the drawing and the position shown by the dashed line in the drawing. You will be going up and down in between. At this time, since the first arm portion 11b and the second arm portion 11c are separately configured with respect to the lift arm 10 on the vehicle outer side and the vehicle interior side, the rollers do not interfere with each arm.

The roller guide 14 is fixed to the lower end portion of the window glass 3, and the windshield 3 is moved up and down, that is, opened and closed as the roller guide 14 is moved up and down.

The window regulator 5 is provided with a regulator motor 20 for swinging the lift arm 10. The regulator motor 20 is the motor body 2
1 and the speed reduction mechanism unit 22, and the speed reduction mechanism unit 2
It is fixed to the main bracket 12 by mounting legs 24 provided on the second casing 23.

The motor main body 21 has a motor housing 25 formed in a cylindrical shape with a bottom, and two permanent magnets 26, 27 having magnetic poles different from each other arranged facing each other are provided on the inner peripheral surface thereof. Has been. A magnetic field is formed inside the motor housing 25 by the permanent magnets 26 and 27. Further, inside the motor housing 25, an armature 28 as an armature is provided in the magnetic field.

The amateur 28 is an amateur shaft 29.
The armature shaft 29 is rotatably supported by bearings 30, 31, and 32 provided in the motor housing 25 and the casing 23, respectively.

An armature core 33 and a commutator 34 are axially mounted on the armature shaft 29 so as to rotate integrally with the armature shaft 29.

The amateur core 33 has ten core slots 37 extending at a slight inclination along the axial direction, and each of the core slots 37 is radially arranged. Ten amateur coils 40 are wound around these core slots 37 by lap winding.

The commutator 34 is arranged on the left side of the amateur core 33 in the figure, and ten segments 34a to which the coil ends 40a of the amateur coils 40 are connected are arranged in a radial pattern so as to be insulated from each other. The commutator 34 has two brushes 41 shown in FIG.
42 are in sliding contact with each other, and these brushes 4
Reference numerals 1 and 42 are connected to motor power supply terminals 43 and 44, respectively. A circuit breaker 45 is provided between the brush 41 and the motor power supply terminal 43 to prevent an excessive current from being supplied to the motor body 21.

The tip of the armature shaft 29 projects into the casing 23 of the reduction gear mechanism 22, and a worm 46 is formed on its outer peripheral surface by rolling. A worm wheel 48 formed integrally with the deceleration output shaft of the reduction gear mechanism 22 is rotatably provided in the casing 23 of the reduction gear mechanism 22. The worm wheel 48 and the worm 46 of the amateur shaft 29 are rotatably provided. And are meshed with each other to form a worm gear 49. Therefore, the output of the motor main body 21, that is, the rotation of the amateur shaft 29 is decelerated by the worm gear 49 and transmitted to the deceleration output shaft (not shown).
A pinion (not shown) is fixed to the deceleration output shaft,
The pinion is meshed with the driven gear 13 of the lift arm 10 so that the rotation of the deceleration output shaft can be transmitted to the driven gear 13.

The regulator motor 20 is provided with a rotation sensor 50 as a sensor member for detecting the rotation speed and the rotation direction of the armature shaft 29 as the output shaft. The rotation sensor 50 is a ring magnet 51. And a sensor unit 52.

The ring magnet 51 is formed in an annular shape in which a plurality of (six poles in this embodiment) magnetic poles are arranged side by side in the circumferential direction, and the armature shaft 29.
Is fitted to the armature shaft 29 to rotate integrally with the amateur shaft 29.

As shown in FIG. 4, the sensor unit 52 has two Hall ICs 53a and 53b, and these Hall ICs 53a and 53b have a phase difference of 90 degrees with respect to the central axis of the armature shaft 29. And is arranged so as to face the ring magnet 51. These Hall ICs 53a and 53b are sensors using Hall elements, and output a pulse signal according to changes in the polarity and magnetic flux density when approaching the magnetic pole.

As shown in FIG. 3, the sensor unit 52 includes a sensor power supply terminal 54 and a sensor ground terminal 55 connected to the Hall ICs 53a and 53b, and two sensor output terminals for outputting pulse signals of the Hall ICs 53a and 53b, respectively. 56 and 57 are provided, and current is supplied and pulse signals are output through these terminals.

A connection connector 23a is integrally provided on the casing 23, and a connection harness (not shown) having a motor side connector 58 at one end is connected to the connection connector 23a. Then, as shown in FIGS. 3 and 5, the common power supply connection terminal 5 is connected to the motor-side connector 58.
9, motor power supply connection terminal 60, sensor ground connection terminal 6
1, the sensor output connection terminal 62 is provided.

These terminals are connected to the motor power supply terminal 43 and the sensor power supply terminal 54 through the connection harness, and the motor power supply connection terminal 60 is connected to the motor power supply terminal 44. The sensor ground connection terminal 61 is connected to the sensor ground terminal 55, and the sensor output connection terminal 62 is connected to the sensor output terminal 56. Here, the common power supply connection terminal 59 and the motor power supply terminal 4
3, the connection with the sensor power supply terminal 54, the connection connector 23
It is designed to be carried out in the connector portion of a connection harness (not shown) connected to a. In the present embodiment, since the door glass lifting system 1 has a specification that does not have a trapping detection function, the pulse signal from the Hall IC 53b is unnecessary and the sensor output terminal 57 is not used.

The control section 6 has a control section side connector 65 having four connection terminals.
By connecting 5 to the motor-side connector 58, the regulator motor 20 and the control unit 6 are connected. Then, current is supplied and pulse signals are transmitted via these connectors 58 and 65.

The control unit 6 is connected to a power window switch circuit (not shown) which is switched by a power window switch (not shown) provided in the driver's cab, and the current supplied from the control unit 6 to the motor power supply terminals 43 and 44 is The power window switch is turned on / off, and the positive / negative of the power window switch is reversed according to the open button and the close button of the power window switch. Further, the power window switch is provided with an auto switch only in the opening direction, and by pushing the auto switch once, the window glass 3 can be operated to the fully open position.

Then, the power window switch is pressed, and the rectified current flows through the commutator 34 to the amateur coil 40 located in the magnetic field,
According to Fleming's left-hand rule, a rotating force is generated in the amateur 28. Accordingly, for example, when the power window switch is operated in the opening direction and the armature shaft 29 rotates, the rotation thereof causes the worm gear 49 to rotate.
Is transmitted to the driven gear 13 via the lift arm 1
By rotating 0, the window glass 3 will open. When the power window switch is operated in the closing direction, the armature shaft 29 is reversely rotated and the lift arm 10 is also rotated and moved in the opposite direction accordingly, so that the window glass 3 is closed.

At this time, the sensor power supply terminal 54 is connected to the common power supply connection terminal 59 together with the one motor power supply terminal 43, and the sensor ground terminal 55 is grounded in the control section 6 via the sensor ground connection terminal. , Control unit 6
The electric power is supplied to the sensor unit 52 only when the potential difference between the common power supply connection terminal 59 and the motor power supply terminal 60 becomes higher on the common power supply connection terminal 59 side. That is, the electric power is supplied to the sensor unit 52 and the pulse signal is sent to the control unit 6 only when the deceleration output shaft drives the window glass 3 in the opening direction. Then, when the window glass 3 is automatically driven in the opening direction by the auto switch, the control unit 6 integrates the pulse signals from the Hall IC 53a and stops the supply of the current when the window glass 3 is fully opened. It is like this.

On the other hand, when the window glass 3 is driven in the closing direction, the sensor unit 52 does not work. This is because the window glass elevating system 1 having no trapping detection function has an automatic switch. This is because the window glass 3 does not have a function of driving in the closing direction, and thus pulse reading in the closing direction of the window glass 3 is unnecessary.

FIG. 6 is a circuit diagram showing the wiring of another regulator motor. In FIG. 6, components having the same functions as those in the circuit diagram shown in FIG. 3 are designated by the same reference numerals.

The magnetic sensor 70 of the regulator motor 71 shown in FIG. 6 has a sensor ground terminal 72 and a sensor output terminal 73.
And a detection signal by an induced electromotive force generated between these terminals 72 and 73 is output from the sensor output terminal 73. Further, the motor body 74 is provided with two motor power supply terminals 75 and 76.
As in the regulator motor 20 shown in FIG. 2, the regulator motor 70 has a common power supply connection terminal 59 connected to the motor power supply terminal 75, a motor power supply connection terminal 60 connected to the motor power supply terminal 76, and a sensor ground terminal. 7
A motor-side connector 58 having four connection terminals, that is, a sensor ground connection terminal 61 connected to 2 and a sensor output connection terminal 62 connected to a sensor output terminal 73 is provided. Since the regulator motor 71 does not have the sensor power supply terminal 54 connected to the common power supply connection terminal 59 in the regulator motor 20, the common power supply connection terminal 59 is connected only to the motor power supply terminal 75. .

Therefore, by connecting the motor-side connector 58 to the controller-side connector 65, the regulator motor 71 can be connected to the same controller 6 that is connected to the regulator motor 20.

Thus, the two motor power supply terminals 43,
A common power supply connection terminal 59, a motor power supply connection terminal 60, a sensor ground connection terminal 61, and a sensor output connection terminal 62 are provided in a regulator motor 20 having five terminals, 44, a sensor power supply terminal 54, a sensor ground terminal 55, and a sensor output terminal 56. Motor-side connector 5 having four connection terminals
Since the regulator motor 20 is provided with the two motor power supply terminals 75 and 76 and the sensor ground terminal 7,
2 and the regulator motor 71 having four terminals of the sensor output terminal 73 can use the same control unit 6, so that the regulator motor 7 can be used for cost reduction.
When diverting the regulator motor 20 instead of 1,
It is not necessary to newly set a dedicated control unit, and the compatibility of the control unit 6 can be improved to reduce the cost of the regulator motor.

It is needless to say that the present invention is not limited to the above-mentioned embodiment, and various modifications can be made without departing from the scope of the invention. For example, in the above-described embodiment, the case where the present invention is applied to the regulator motor 20 used in the door glass lifting system 1 is shown, but the invention is not limited to this, and the sliding door provided in the vehicle is opened and closed. Any motor having a rotating member such as a motor for driving the sliding door mechanism and a motor for opening / closing the sunroof may be used.

Further, in the above-described embodiment, the motor side connector 58 is connected to the casing 23 via the connection harness.
The motor side connector 58 is integrally formed so that the common power source connection terminal 59 can be internally connected to the motor side power source terminal 43 and the sensor power source terminal 54. The connector unit may be directly connected to the connection connector 23a.

[0049]

According to the present invention, a motor main body having five terminals, that is, two motor power source terminals, a sensor power source terminal, a sensor ground terminal, and a sensor output terminal, has a common power source connection terminal, a motor power source connection terminal, and a sensor ground terminal. Since a motor-side connector having four connection terminals, that is, a connection terminal and a sensor output connection terminal, can be connected, it is possible to improve the compatibility of a control unit having four connection terminals and reduce the cost of this electric motor. it can.

[Brief description of drawings]

FIG. 1 is a perspective view showing an outline of a door glass lifting system having a regulator motor according to an embodiment of the present invention.

FIG. 2 is a partially cutaway sectional view showing details of the regulator motor shown in FIG.

FIG. 3 is a circuit diagram showing wiring of the regulator motor shown in FIG.

FIG. 4 is a perspective view showing details of a rotation sensor shown in FIG.

5 is a front view showing details of the motor-side connector shown in FIG. 2. FIG.

FIG. 6 is a circuit diagram showing wiring of another regulator motor.

[Explanation of symbols]

1 Door glass lifting system 2 front door 3 wind glass 4 Guide member 5 window regulator 6 control unit 7 glass guide 7a Slider part 8,9 Stabilizer 10 lift arm 10a tip 10b root department 11 Equalizer arm 11a connecting shaft 11b First arm part 11c Second arm part 11d tip 12 Main bracket 13 Driven gear 14 Roller guide 14a Guide groove 15 Roller guide 15a guide groove 20 regulator motor 21 Motor body 22 Reduction mechanism 23 casing 24 mounting legs 25 motor housing 26,27 Permanent magnet 28 amateur 29 amateur shaft 30, 31, 32 bearings 33 Amateur Core 34 Commutator 34a segment 37 core slots 40 amateur coils 40a coil end 41,42 brush 43,44 Motor power supply terminal 45 circuit breaker 46 Warm 48 Warm Wheel 49 Worm gear 50 rotation sensor 51 ring magnet 52 sensor unit 53a, 53b Hall IC 54 Sensor power supply terminal 55 Sensor ground terminal 56,57 Sensor output terminal 58 Motor side connector 59 Common power supply connection terminal 60 Motor power supply connection terminal 61 Sensor ground connection terminal 62 Sensor output connection terminal 65 Control side connector 70 Magnetic sensor 71 Regulator motor 72 Sensor ground terminal 73 Sensor output terminal 74 Motor body 75,76 Motor power supply terminal

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Masaki Mita             Gunma prefecture Kiryu city Hirosawa town             Mitsuba Co., Ltd. F term (reference) 3D127 AA19 CB05 CC05 DF08                 5H605 AA07 AA08 BB05 CC06 DD09                       EA15 EC05 EC08 EC11 EC14                       EC16 EC18                 5H607 AA12 BB01 BB04 BB14 CC07                       DD10 DD19 EE32 EE36 HH03                       HH09                 5H611 AA01 BB01 PP01 QQ01 QQ05                       QQ06 RR01 TT01 UA04

Claims (4)

[Claims] 1. An electric motor having a sensor member that outputs a detection signal in accordance with rotation of an output shaft, the electric motor having five terminals: two motor power terminals, a sensor power terminal, a sensor ground terminal, and a sensor output terminal. A motor main body, a common power supply connection terminal connected to one of the motor power supply terminals and the sensor power supply terminal, a motor power supply connection terminal connected to the other motor power supply terminal, and a sensor ground connected to the sensor ground terminal. A motor-side connector having four connection terminals, namely, a connection terminal and a sensor output connection terminal connected to the sensor output terminal, wherein the motor-side connector includes two motor power supply terminals, a sensor ground terminal, and a sensor output terminal. An electric motor, which can be connected to a motor body having two terminals. 2. The electric motor according to claim 1, wherein the sensor member operates when the common power supply ground terminal is on a high potential side. 3. The electric motor according to claim 1, wherein the output shaft drives an opening / closing body provided in the vehicle in an opening / closing direction. 4. The electric motor according to claim 3, wherein when the common power supply ground terminal is on the high potential side, the opening / closing body is driven in the opening direction.