JP2002136049A - Motor with position switch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a motor having a position switch in which detection precision can be enhanced and which has a compact outward configuration. SOLUTION: The motor 1 with a position switch provided with a position switch 30 comprises a frame member 31 in which a female screw-shaped groove is formed in the internal circumference part thereof, a drive member 34 which is inserted in the guide groove 32 of the frame member 31 and fitted therein, by which rotation of an output shaft 13 is transmitted, and which is movable in axial direction of the output shaft 13, and a switch 37 which turns on/off when an opening and closing body come to a predetermined location.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motor with a position switch for driving an opening / closing member such as a window glass or a sunroof lid and indirectly detecting the position thereof to generate a control signal.

[0002]

2. Description of the Related Art A motor with a position switch which drives an opening / closing body and indirectly detects its position to generate a control signal drives a load to a stroke end by rotating a plurality of times three to five times. The rotation of the output shaft is reduced to one rotation of the rotating body provided in the position switch, and when the load reaches a predetermined position within one rotation of the rotating body, a control signal is generated.

[0003]

However, in the motor with the position switch described above, the rotation of the output shaft, which rotates a plurality of times three to five times to drive the load to the stroke end, is reduced to one rotation of the rotating body. As a result, it is detected that the load has reached the predetermined position, so that the operating stroke of the rotating body is extremely reduced to 1/3 to 1/5 with respect to the total stroke amount of the load. Detection accuracy is reduced, for example, when used in a power window device with a pinch detection function that flips the window glass to the open side when there is a pinch in the middle of moving to the side where the window glass closes, When the moving window glass is between the fully closed position and the fully closed position, the non-reversed area for preventing the reversing operation from being displaced may be misaligned. There is a Les. In addition, since the gear reduction mechanism is used to reduce the number of rotations of the output shaft to one rotation of the rotating body of the position switch, the position switch requires a lot of space and the outer shape of the entire motor with the position switch becomes large. There was a problem that was.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a motor with a position switch which can improve the detection accuracy and has a compact outer shape.

[0005]

Configuration of the Invention

[0006]

According to a first aspect of the present invention, there is provided a motor with a position switch, wherein a case, a magnet disposed on an inner wall of the case, and disposed opposite the magnet and rotatably supported by the case. An armature that is rotated by energization, and the rotation of the armature is transmitted, and an output shaft coupled to a load is provided, and is formed in an annular shape, and a female screw-shaped guide groove is formed in an inner peripheral portion,
A frame member disposed in the case, a driving member that is inserted into the guide groove of the frame member and is meshed with the guide groove, the rotation of the output shaft is transmitted, and the output member is movable in the axial direction of the output shaft; It is characterized in that it is provided with a position switch composed of a switch that operates to switch on and off when the opening / closing body comes to a predetermined position by movement in the axial direction.

In a motor with a position switch according to a second aspect of the present invention, a motor yoke, a gear case fixed to the motor yoke, a magnet disposed on an inner wall of the motor yoke, and a motor disposed opposite to the magnet. An armature that is rotatably supported by a yoke and a gear case, and is connected to an armature that rotates when energized, a wheel gear that is rotatably supported by the gear case, and rotates with the rotation of the armature shaft, and a wheel gear. A damper and an output shaft coupled to the damper and transmitting the rotation of the wheel gear through the damper and coupled to the load, are formed in an annular shape, and a female screw-shaped guide groove is formed in the inner peripheral portion. And a frame member disposed opposite to the wheel gear and disposed in the gear case, and a guide for the frame member. The opening / closing member is brought into a predetermined position by a driving member that is inserted into the guide groove and is meshed with the guide groove, the rotation of the output shaft is transmitted, and is movable in the axial direction of the output shaft. And a switch that switches on and off when the switch is turned on.

According to a third aspect of the present invention, there is provided a motor with a position switch, a motor yoke, a gear case fixed to the motor yoke, a magnet disposed on an inner wall of the motor yoke, and a motor disposed opposite to the magnet. An armature that is rotatably supported by a yoke and a gear case, and is connected to an armature that rotates when energized, a wheel gear that is rotatably supported by the gear case, and rotates with the rotation of the armature shaft, and a wheel gear. A damper and an output shaft coupled to the load, coupled to the damper and transmitting the rotation of the wheel gear through the damper, are formed in an annular shape, and a female screw-shaped guide groove is formed in the inner peripheral portion. And a frame member disposed on the gear case so as to face the wheel gear, and an inner peripheral portion of the frame member. A pivot shaft member integrally disposed in the output shaft, slidable in the axial direction, and integrally coupled in the rotational direction, and a pivot shaft member coupled to the pivot shaft member, and A driving member which is inserted into the guide groove and is movable in the axial direction of the output shaft along the guide groove while being supported by the guide groove by the rotation of the pivot shaft member; and a pressing member formed integrally with the drive member. A position switch comprising: a switch that is turned on and off by a pressing member coming into contact when the opening / closing body comes to a predetermined position by moving the driving member in the axial direction of the output shaft. It is characterized by doing.

According to a motor with a position switch according to a fourth aspect of the present invention, in addition to any one of the first, second and third aspects, a pivot shaft member receiving portion is provided between the damper and the output shaft. The formed hub is arranged, and the pivot shaft member of the position switch is formed with an engaging portion which is movable in the axial direction of the output shaft and is locked by the pivot shaft member receiving portion of the hub. It is characterized by having.

In a motor with a position switch according to a fifth aspect of the present invention, in addition to any one of the first, second, third and fourth aspects, the driving member of the position switch includes a pivot shaft member at a central portion. An output shaft coupling portion is formed, and a guide groove insertion portion inserted into a guide groove of the frame member is formed at an end portion, and the pressing member is formed on the driving member. Features.

[0011]

In the motor with position switch according to the present invention, when the output shaft rotates, the drive member rotates at the same rotation as the output shaft while being engaged with the guide groove of the frame member. When the opening / closing body reaches a predetermined position, the switch is turned on and off. Therefore, since the rotation of the output shaft is used for position detection of the opening / closing body without decelerating the rotation of the output shaft that rotates a plurality of times, the detection accuracy is lower than that in the case where the rotation of the output shaft is decelerated and used. As it gets higher,
There is no need to use a reduction mechanism or the like.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION

[0013]

1 to 4 show one embodiment of a motor with a position switch according to the present invention.

The illustrated motor 1 with a position switch mainly includes a motor yoke 2, a gear case 3, a first magnet 4, a second magnet 5, an armature 6, a holder base 7, a first brush 8, and a second brush. 9, a wheel gear 10, a damper 11, a hub 12, an output shaft 13, and a position switch 30. The position switch 30 includes a frame member 31, a guide groove 32, a pivot shaft member 33, and a driving member 3.
4. Micro switch 3 having pressing member 35 and contact 36
Consists of seven. The motor 1 with a position switch is used in a power window device with a pinch detection function for driving a window glass as an opening / closing body.

The motor yoke 2 is formed with an open flange 2b at one end of a cylindrical motor yoke main body 2a, and at the other end of the motor yoke main body 2a.
A closed end cap 2c is formed. The flange 2b is screwed to the gear case 2 with screws 14. A first bearing 15 is mounted inside the end cap 2c. The first bearing 15 rotatably supports one end of an armature shaft 16 provided on the armature 6. In the motor yoke 2, first and second magnets 4, 5 are fixed to the inner wall of the motor yoke main body 2a, respectively. The first and second magnets 4 and 5 respectively generate inwardly opposing magnetic forces.

In the gear case 3, a shaft hole 3b is formed in a substantially rectangular gear case main body 3a, and a wheel gear housing 3c is formed in communication with the shaft hole 3b. Shaft hole 3b of gear case 3
Is connected to the inside of the motor yoke 2, and the shaft bearing 3 b has a second bearing 1 at one end on the motor yoke 2 side.
7 is fixed, and a third bearing 18 is fixed to the other end. The second bearing 17 rotatably supports the central portion of the armature shaft 16, and the third bearing 18 rotatably supports the other end of the armature shaft 16.

The armature 6 has an armature core 19 and a commutator 20 on an armature shaft 16.
The armature core 19 is provided with winding portions 19a corresponding to the number of slots, and the commutator 20 is provided with the same number of commutator pieces 20a as the winding portions 19a. The armature 6 is provided with armature coils 21 wound around the winding portions 19a of the armature core 19 and electrically connected to the commutator pieces 20a of the commutator 20, respectively.

Outside the commutator 20 of the armature 6, a holder base 7 screwed to one end of the gear case 3 is arranged. First and second brush boxes 22 and 23 are fixed on the holder base 7 so as to face each other, and first and second brush springs 24 are mounted on the first and second brush boxes 22 and 23. , 25 through the first,
Second brushes 8 and 9 are respectively housed. First,
The second brushes 8 and 9 are electrically connected to the power window control circuit and are connected to the first and second brush springs 2.
Due to the elastic repulsion forces of the elastic members 4 and 25, they are pressed against the commutator pieces 20a of the commutator 20 so as to be electrically connectable.

The power window control circuit is provided with an open switch and a close switch. When the open switch is turned on, the voltage of the power supply is applied to the first brush 8 and the second brush 9 is grounded, so that the first brush 8 and the commutator piece 20 of the commutator 20 are turned on.
a, the current of the power supply flows through the armature coil 21, the commutator piece 20a of the commutator 20, and the second brush 9, and the armature shaft 16 rotates forward. On the other hand, when the close switch is turned on, the voltage of the power supply is applied to the second brush 9 and the first brush 8 is grounded, so that the second brush 9 and the commutator piece of the commutator 20 are turned on. 20a, armature coil 2
1. The current of the power supply flows through the commutator piece 20a of the commutator 20 and the first brush 8, and the armature shaft 16 rotates in the reverse direction.

Armature shaft 1 of armature 6
6 has a worm 1 in a shaft hole 3b of the gear case 3.
The wheel gear 10 is meshed with the worm 16a. The wheel gear 10 is disposed in a wheel gear accommodating portion 3c of the gear case 3 and, as shown in FIG. 2, is made of rubber and has the same shape as the damper attaching portion 10a in a damper attaching portion 10a formed at the center. The damper 11 is fitted. A hub 12 is mounted on the damper 11, and an output shaft 13 is fixed to the hub 12. As shown in FIG. 2, the hub 12 is made of metal having a U-shaped cross section. The hub 12 has a hub body 1 disposed above the damper 11.
2a and a plurality of damper coupling portions 12b inserted into the damper 11 from the end of the hub body 12a. The hub body 12a is formed with pivot shaft receivers 12c, 12c each having a round hole shape and into which engaging portions 33c, 33c provided in a pivot shaft member 33 described later are inserted.

An output gear 26 is attached to the output shaft 13 at a portion protruding from the gear case 3. The output gear 26 is connected to a window glass via a glass elevator (not shown). At this time, the armature shaft 1
When the wheel 6 rotates forward, the wheel gear 10 rotates forward, and the hub 12 rotates forward through the damper 11, whereby the output shaft 13 rotates clockwise approximately five times in FIG. 1 to open the window glass. On the contrary, the armature shaft 16
When the wheel gear 10 rotates in the reverse direction, the wheel gear 10 rotates in the reverse direction, and the hub 12 rotates in the reverse direction through the damper 11, whereby the output shaft 13 reversely rotates counterclockwise approximately five times in FIG. 1 to close the window glass.

A position switch 30 is disposed above the wheel gear 10 in the wheel gear housing 3c of the gear case 3. The frame member 31 of the position switch 30 is formed in an annular shape having an outer diameter substantially equal to that of the wheel gear 10. The frame member 31 is fixed to the gear case 3 by being stopped by a position switch supporting portion 3c1 formed in the wheel gear housing portion 3c of the gear case 3.

The guide groove 32 is, as shown in FIG.
The figure which is formed in the inner edge part of the frame member 31 from the bottom part 31a side of the frame member 31 to the top part 31b in the shape of a female screw, and is the winding start arrange | positioned at the bottom part 31a side of the frame member 31 4 from the first end 32a shown in FIG. 4 to the second end 32b shown in FIG. 3, which is the end of the winding arranged on the top portion 31b side of the frame member 31, but has a left-handed helical winding. The length of the guide groove 32 from the first end 32a to the second end 32b corresponds to the rotation amount of the output shaft 13 when the window glass is moved by a full stroke amount from a fully closed position to a fully opened position. It is long. The guide groove 32 has an inner diameter D1 shown in FIG.

The pivot shaft member 33 is arranged at the center of the frame member 31. The pivot shaft member 33 includes the output shaft 13.
An axial pivot member main body 33a having a length in the axial direction of
A pivot shaft member main body 33 is provided below the pivot shaft member main body 33a.
a and a hub-side connecting portion 33b integrally formed. The driving member 34 is connected to the pivot shaft member main body 33a. The hub-side connecting portion 33b is formed in a disk shape having an outer diameter larger than that of the pivot shaft member main body 33a.
Engaging portions 33c, 33c respectively inserted into 2c are formed to protrude. The engagement portion 33c is engaged with the pivot shaft receiver 12c of the hub 12 as described above.

The pivot shaft member 33 is integrally connected to the hub 12 by inserting the engaging portions 33c of the hub-side coupling portion 33b into the pivot shaft member supports 12c of the hub 12, and rotates together with the hub 12. I do. At this time, the rotation of the pivot shaft member 33 and the driving member 34 causes the driving member 34 to move inside the frame member 31 to the right in FIG. 4 while being supported by the guide grooves 32 of the frame member 31, and When moving to the left side in FIG. 4, the engaging shaft 33 moves in the axial direction of the output shaft 13 within the pivot shaft receiving portion 12 c of the hub 12, so that the pivot shaft 33 is integrated with the hub 12. The power is transmitted and rotated while still being connected.

The driving member 34 is provided with a driving member main body 34a formed in an I-shaped flat plate, and an output shaft side coupling portion 34b formed at the center of the driving member main body 34a is provided with a pivot shaft member 33. Is fixed substantially at the center of the pivot shaft member main body 33a. The first end of the driving member body 34a
Guide groove insertion portion 34c, second guide groove insertion portion 34d
Are formed respectively. Since the first and second guide groove insertion portions 34c and 34d have a separation dimension L1 slightly smaller than the inner diameter dimension D1 of the guide groove 32, they are inserted and supported at opposing positions of the guide groove 32, respectively. The pressing member fixing portion 34e is located near the first guide groove insertion portion 34c of the driving member main body 34a.

In the driving member 34, the output shaft side coupling portion 34b is fixed to the pivot shaft member 33, and the first and second guide groove insertion portions 34c and 34d are inserted and supported at positions facing the guide groove 32, respectively. As a result, it rotates together with the pivot shaft member 33. At this time, when the pivot shaft member 33 rotates forward with the output shaft 13, the first guide groove insertion portion 34c is rotated forward while being supported by the guide groove 32 from the second end 32b to the first end 32a. Therefore, when the driving member 34 moves to the bottom 31a side of the frame member 31, when the pivot shaft member 33 rotates in reverse with the output shaft 13, the first guide groove insertion portion 34c is moved to the first end. Since the guide member 32 rotates in the reverse direction from the second end 32b to the second end 32b, the drive member 34 moves toward the top 31b of the frame member 31.

The pressing member 35 is formed integrally with a main body 35a and a contact collision portion 35b. The main body 35a is formed in a rectangular shape. The main body 35a is fixed to the pressing member fixing portion 34e of the driving member 34. The contact collision portion 35b
It is arranged on the side of the main body 35a and collides with the contact 36 of the micro switch 37.

The pressing member 35 rotates together with the driving member 34. When the pressing member 35 rotates forward with the driving member 34, the pressing member 35 is integrated with the driving member 34 to form the bottom 3 of the frame member 31.
Since the contact portion 35b is moved to the side 1a, the contact collision portion 35b moves away from the contact 36 of the microswitch 37. On the contrary, when the driving member 34 rotates in the reverse direction,
Is moved integrally to the top portion 31b side of the frame member 31, so that the contact collision portion 35b
6 and eventually, the contact collision portion 35b becomes the contact 3
Collide with 6.

The micro switch 37 is fixed near the second end 32b of the guide groove 32. The micro switch 37 is provided between the time when the contact collision portion 35b of the pressing member 35 reaches the position before the second end 32b of the guide groove 32 by a predetermined length L2 and the time when the contact reaches the second end 32b. During this time, the normally open contact 36 is turned on to generate an inversion inhibition signal (detection signal). This length dimension L2 sets a non-inversion area for preventing the window glass from performing an inversion operation based on pinch detection by the power window control circuit when the window glass moves from the fully closed position to the fully closed position. Used for

The terminals 37a and 37b provided in the microswitch 37 are electrically connected to the power window control circuit. Therefore, when the contact 36 is turned on, the window glass is fully closed from a position immediately before the fully closed position. It indirectly detects that it is between the positions, and supplies an inversion prohibition signal to the power window control circuit.

In the position switch 30, when the window glass is at the fully open position, the pressing member 35 is disposed at the first end 32a of the guide groove 32, and the output shaft 13 is moved from the state where the window glass is at the fully open position in FIG. The counterclockwise rotation causes the drive member 34 and the pressing member 35 to rotate while the first and second guide groove insertion portions 34 c and 34 d of the drive member 34 are supported by the guide grooves 32, thereby rotating the frame member 31. Move to the top 31b side.

In the position switch 30, when the window glass moving to the closing side reaches the position near the fully closed position, the first guide groove insertion portion 34c of the driving member 34 is moved to the second end of the guide groove 32. 32b and the pressing member 35
Contact portion 35b of the micro switch 37
Is supplied to the power window control circuit for inhibiting the inversion operation of the window glass. After that, the output shaft 13 continues to rotate in the reverse direction by continuing the reverse rotation, and when the window glass reaches the fully closed position, the drive member 3
4 is the second guide groove insertion portion 34c of the guide groove 32
When the armature shaft 16 is restrained from rotating, a lock detection signal is generated from a lock detection circuit provided in the power window control circuit.

In the position switch 30, when the window glass moves the full stroke from the fully closed position to the fully opened position, the driving member 34 rotates the same number of times as the output shaft 13,
Since the rotation of the output shaft 13 is not used at a reduced speed, the detection accuracy in the position detection of the window glass increases. Further, since a speed reduction mechanism for reducing the rotation of the output shaft 13 is not used, it is not necessary to provide much space for the speed reduction mechanism in the gear case 3.

The power window control circuit includes a lock detection circuit and an inversion control circuit. The lock detection circuit has a lock current detection resistor connected in a circuit for supplying current to the first brush 8 or the second brush 9, and a current value flowing through the lock current detection resistor exceeds a predetermined value. Generates a lock detection signal. The lock detection signal is
It occurs when the window glass reaches the fully open position or the fully closed position and when the window glass that is moving to the closing side is pinched. At this time, a rotation detector that directly detects the rotation of the armature shaft 16 may be used instead of the lock current detection resistor.
A lock detection signal is generated when the rotation signal supplied from the rotation detector disappears.

The reversing control circuit receives the reversal prohibition signal from the micro switch 37 of the position switch 30 when the window glass moving to the closing side is between the fully opened position and the fully closed position. When the lock is not present, the rotation of the armature shaft 16 is restricted by the pinch of the window glass and a lock detection signal is generated from the lock detection circuit. By grounding the brush 9, the current supply direction is reversed, the armature shaft 16 is rotated forward, and the window glass moving to the closing side is reversed to the opening side to avoid pinching.

The reversal control circuit detects that the window glass moving to the closing side passes through the position near the fully closed position,
When an inversion inhibition signal is given from the micro switch 37 of the position switch 30, the inversion control of the current supply to the first and second brushes 8 and 9 is not performed. Therefore, when the armature shaft 16 continues to rotate in the reverse direction and the window glass reaches the fully closed position, a lock detection signal is generated by the lock detection circuit, and the current supply to the first and second brushes 8 and 9 is cut off. Stop the window glass in the fully closed position.

In such a motor 1 with a position switch, the gear case 3 is fixed to the inner panel in the door panel by screws, and the output shaft 13 protruding from the gear case 3 is connected to the window glass via the glass elevator, and the first and second motors are provided. The second brushes 8, 9 are electrically connected to the power window control circuit and mounted on the vehicle body.

When the window glass is at the fully-closed position A, the position switch 30 causes the pressing member 35 to move to the second position of the guide groove 32.
Of the contact collision portion 35b
Has collided with the contact 36, and the microswitch 37 has been turned on to generate an inversion inhibition signal.

When the open switch of the power window control circuit is turned on, the armature shaft 16 starts to rotate forward and the output shaft 13 rotates forward to open the window glass. When the output shaft 13 rotates forward, the position switch 30 moves the driving member 34 toward the bottom 31a of the frame member 31 while being supported by the guide groove 32, and moves the contact collision portion 35b of the pressing member 35 away from the contact 36. As a result, the micro switch 37 is turned off, and the micro switch 37 no longer generates an inversion inhibition signal.

While the window glass is moving toward the fully open position, the position switch 30 moves to the bottom 31a side of the frame member 31 while the pressing member 35 rotates forward with the driving member 34.

When the window glass reaches the fully opened position, the window glass collides with the door panel and is prevented from moving. The output shaft 13 is restrained from rotating forward through the glass elevator, and the wheel gear is controlled via the damper 11. Since the rotation of the armature 10 is restricted, when the armature shaft 16 stops rotating, a lock detection signal is generated from the lock detection circuit, and the lock detection signal cuts off the current supply to the first and second brushes 8 and 9. It is turned off and the window glass stops at the fully open position. When the window glass collides with the door panel at the fully opened position, the impact force applied to the output shaft 13 is absorbed by the damper 11 and is not transmitted to the wheel gear 10. The position switch 30 stops when the drive member 34 that has moved along the guide groove 32 reaches the first end 32 a of the guide groove 32.

When the close switch of the power window control circuit is turned on while the window glass is at the fully open position, the armature shaft 16 rotates in the reverse direction and the output shaft 13
The window glass is opened by the reverse rotation of. When the output shaft 13 rotates in the reverse direction, the position switch 30 moves the first guide groove insertion portion 34c of the driving member 34 away from the first end 32a of the guide groove 32, and the driving member 34
And the pressing member 35 moves to the top part 31 b side of the frame member 31. At this time, the micro switch 37 has not generated the inversion inhibition signal.

When the window glass moving toward the fully closed position is pinched before the position near the fully closed position,
When a large load is applied to the window glass, the output shaft 13 is restrained from rotating in the reverse direction via the glass elevator, and the wheel gear 10 is restrained from rotating through the damper 11, so that when the armature shaft 16 stops rotating, lock detection is performed. A lock detection signal is generated from the circuit. At this time, since the micro switch 37 does not generate the inversion prohibition signal, the position switch 30 detects the first and second positions by the lock detection signal.
The current supply to the brushes 8 and 9 is reversed, and the armature shaft 16, the wheel gear 10 and the output shaft 13 respectively start forward rotation, and as a result, the window glass is reversed and moved to the open side. The window glass is automatically reversed to the fully open position.

When the close switch of the power window control circuit is turned on while the window glass is in the fully open position, the armature shaft 16 rotates in the reverse direction and the output shaft 13
Is rotated in the reverse direction, thereby closing the window glass.
When the output shaft 13 rotates in the reverse direction, the position switch 30 moves the first guide groove insertion portion 34c of the driving member 34 away from the first end 32a of the guide groove 32, and the driving member 34
And the pressing member 35 moves to the top part 31 b side of the frame member 31. At this time, the micro switch 37 has not generated the inversion inhibition signal.

When the window glass moving to the closing side passes through the position near the fully closed position, the position switch 3 pushes the contact colliding portion 35 b of the pressing member 35 against the contact 36 of the micro switch 37, thereby causing the micro switch 37 to move. When an inversion prohibition signal is generated from 37 and the window glass reaches the fully closed position, the window glass collides with the door panel and is prevented from moving. The output shaft 13 is restrained from rotating in the reverse direction, and is output via the damper 11. Since the rotation of the wheel gear 10 is restricted, when the armature shaft 16 stops rotating, a lock detection signal is generated from the lock detection circuit,
The first and second brushes 8 and 9 are provided by the lock detection signal.
Is cut off and the window glass stops in the fully closed position. When the window glass collides against the door panel at the fully closed position, the impact force applied to the output shaft 13 is absorbed by the damper 11 and is not transmitted to the wheel gear 10. At this time, the position switch 30 is in a state where the first guide groove insertion portion 34c of the driving member 34 reaches the second end 32b of the guide groove 32 and stops, and the micro switch 37 generates an inversion inhibition signal. Will remain.

As described above, the motor 1 with the position switch
Then, when the window glass moves the full stroke from the fully closed position to the fully opened position, the driving member 34 rotates the same number of times as the output shaft 13 and the rotation of the output shaft 13 is not reduced and used. , The detection accuracy in the position detection becomes higher. Further, since a speed reduction mechanism for reducing the rotation of the output shaft 13 is not used, it is not necessary to provide much space for the speed reduction mechanism in the gear case 3.

[0048]

As described above, according to the motor with the position switch according to the present invention, when the output shaft rotates, the driving member rotates with the same rotation as the output shaft while being engaged with the guide groove of the frame member. I do. When the opening / closing body reaches a predetermined position, the switch is turned on and off. Therefore, since the rotation of the output shaft is used for position detection of the opening / closing body without decelerating the rotation of the output shaft that rotates a plurality of times, the detection accuracy is lower than that in the case where the rotation of the output shaft is decelerated and used. As the height increases, it becomes unnecessary to use a speed reduction mechanism or the like. Therefore, it is possible to increase the detection accuracy and to achieve an excellent effect of achieving a compact outer shape.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional front view for explaining an internal structure of an embodiment of a motor with a position switch according to the present invention.

FIG. 2 is a vertical sectional side view of the motor with a position switch shown in FIG. 1;

FIG. 3 is a front view of the position switch in the motor with the position switch shown in FIG. 1;

FIG. 4 is a vertical sectional side view of the position switch shown in FIG. 3;

[Explanation of symbols]

 Reference Signs List 1 motor with position switch 2 case, motor case 3 case, gear case 4 (magnet) first magnet 5 (magnet) second magnet 6 armature 10 wheel gear 11 damper 12 hub 12c 13) output shaft 16 armature shaft 30 position switch 31 frame member 32 guide groove 33 pivot shaft member 33c engaging portion 34 driving member 34b (output shaft connecting portion) output shaft side connecting portion 34c (guide groove inserting portion) 1 guide groove insertion portion 34d (guide groove insertion portion) first guide groove insertion portion 35 pressing member 37 (switch) micro switch

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H02K 23/66 H02P 7/06 G 5H611 H02P 7/06 H02K 11/00 C 5H623 (72) Inventor Oshima 1760 Higashimatano-cho, Totsuka-ku, Yokohama-shi, Kanagawa F-term (reference) 2E052 AA01 BA02 CA06 DA08 DB08 EA14 EB01 GA03 GA08 GB06 GC01 GC05 GC06 GC07 GD03 GD05 GD09 HA01 KA12 KA13 KA14 KA15 5G004 AA09 BA09 DA10 FA02 5H571 AA20 BB03 BB07 GG01 HA04 LL33 PP01 PP02 5H605 AA00 BB05 CC01 CC05 CC07 CC08 5H607 BB01 BB14 CC01 CC03 EE31 EE36 HH01 HH06 5H611 AA05 BB01 QQ03 UA01 5H623 AA09 BB07 JJ13 HJ05

Claims (5)

[Claims] 1. A case, a magnet arranged on an inner wall of the case, an armature arranged to face the magnet, rotatably supported by the case, and rotated by energization, and transmitting rotation of the armature. A frame member disposed in the case, the frame having a female thread-like guide groove formed in an inner peripheral portion, and a guide groove of the frame member. The drive member is inserted into the guide groove, is engaged with the guide groove, and the rotation of the output shaft is transmitted and is movable in the axial direction of the output shaft. A position switch comprising: a switch that operates to switch on and off when the motor comes. 2. A motor yoke, a gear case fixed to the motor yoke, a magnet disposed on an inner wall of the motor yoke, and disposed opposite to the magnet and rotatable by the motor yoke and the gear case. An armature having an armature shaft supported by the armature and rotating by energization; a wheel gear rotatably supported by the gear case and rotating with the rotation of the armature shaft; a damper coupled to the wheel gear; An output shaft coupled to a damper and transmitting the rotation of the wheel gear through the damper, and coupled to a load, is formed in an annular shape, and a female screw-shaped guide groove is formed in an inner peripheral portion thereof. A frame member arranged on the wheel gear so as to face the gear case, and arranged on the gear case; A driving member that is inserted into the guide groove of the material and is meshed with the guide groove to transmit the rotation of the output shaft and move in the axial direction of the output shaft; A motor with a position switch, comprising: a position switch comprising: a switch that is turned on and off when the body reaches a predetermined position. 3. A motor yoke, a gear case fixed to the motor yoke, a magnet arranged on an inner wall of the motor yoke, and arranged to face the magnet and rotatable by the motor yoke and the gear case. An armature having an armature shaft supported by the armature and rotating by energization; a wheel gear rotatably supported by the gear case and rotating with the rotation of the armature shaft; a damper coupled to the wheel gear; An output shaft coupled to a damper and transmitting the rotation of the wheel gear through the damper, and coupled to a load, is formed in an annular shape, and a female screw-shaped guide groove is formed in an inner peripheral portion thereof. A frame member arranged on the wheel gear so as to face the gear case, and arranged on the gear case; A pivot shaft member integrally disposed in an inner peripheral portion of the member, slidable in the axial direction with the output shaft, and integrally coupled in a rotational direction; and coupled to the pivot shaft member. It is inserted into the guide groove of the frame member, and by the rotation of the pivot shaft member,
A driving member supported by the guide groove and movable in the axial direction of the output shaft along the guide groove; a pressing member formed integrally with the driving member; and an axial direction of the output shaft of the driving member. A position switch comprising: a switch that is turned on and off by the contact of the pressing member when the opening / closing body comes to a predetermined position due to the movement of the motor. 4. A hub having a pivot shaft receiving portion is disposed between the damper and the output shaft. The hub of the position switch is movable in the axial direction of the output shaft. The motor with a position switch according to any one of claims 1 to 3, wherein an engagement portion is formed to be engaged with the pivot shaft receiving portion of the hub. 5. The driving member of the position switch has an output shaft coupling portion coupled to the pivot shaft member at a central portion, and a guide groove insertion portion inserted into a guide groove of the frame member at an end portion. The motor with a position switch according to any one of claims 1, 2, 3, and 4, wherein the pressing member is formed on the driving member.