KR100537819B1 - Geared motor - Google Patents

Abstract

An object of the present invention is to provide a geared motor in which the clutch does not malfunction when a momentary stop occurs.

In the AC synchronous motor main body 10 used for the geared motor as a means to solve this problem, even if the power supply to the stator coil 150 is stopped momentarily and the rotor 11 stops, the magnetic induction rotating body 13 is made of metal. Since the ring-shaped spindle 130 is added, the magnetic induction rotating body 13 is heavy. Therefore, since the magnetic induction rotating body 13 rotates by inertial force, the magnetic induction rotating body 13 continues to rotate even when there is a momentary stop.

Description

Geared Motors {GEARED MOTOR}

The present invention relates to a geared motor used for a drive mechanism such as a drain valve of a washing machine and a shutter of a ventilation line. More particularly, the present invention relates to a malfunction prevention technique during instantaneous stop of power supply to a geared motor.

In a geared motor used for a driving mechanism such as a drain valve of a washing machine or a shutter of a ventilation line, for example, the AC synchronous motor main body 10 shown in FIG. 5 is used, and in this AC synchronous motor main body 10, the rotor magnet 111 is used. The magnetic induction magnet 112 is also formed on the inner circumferential side of the rotor 11 configured to face the stator (not shown). In addition, the magnetic induction rotating body 13 is disposed inside the magnetic induction magnet 112. The magnetic induction rotating body 13 is formed with a back yoke ring 13c as a magnetic induction ring facing the magnetic induction magnet 112 and a braking pinion 13a. Therefore, when power is supplied to a stator coil (not shown), the rotor 11 rotates, and the magnetic induction rotating body 13 induced therein rotates.

The rotation of the braking pinion 13a here operates the clutch mechanism for stairing the connection between the rotor and the output shaft (not shown).

However, in the conventional geared motor, a momentary stop occurs in the power supply. When the power supply to the stator coil is stopped even at a moment and the rotor 11 stops, the rotation of the magnetic induction rotating body 13 also stops. The problem is that it works.

The problem of the present invention is to solve the above problems and to provide a geared motor that does not malfunction when the momentary stop.

In order to solve the above problems, in the present invention, a motor main body having a stator and a rotor magnet disposed opposite to the stator, an output shaft connected to the rotor of the motor main body and rotationally driven to a predetermined load, the output shaft and the rotor And a clutch actuating means for causing the clutch means to perform a staircase operation, the clutch actuating means being rotatable in association with the rotor, and the magnetic actuating magnet being magnetized by the magnetic induction magnet. In a geared motor having a self-inducing rotating body having a guided induction ring and a braking pinion which rotates integrally with the induction ring and fixes the connection state between the output shaft and the rotor, the feeding to the stator coil is also performed. Rotation holding means for maintaining the rotation of the magnetic induction rotating body for a predetermined time even when stopped It is characterized by the arrangement.

In the present invention, when the power is supplied to the stator coil, the rotor rotates, and the magnetically induced rotating body rotates therein. As a result, the rotation of the braking pinion is output and the clutch means is operated. Here, even if the power supply to the stator coil is momentarily stopped and the rotor stops, in the present invention, since the rotation holding means maintains the rotation of the self-inducing rotating body for a predetermined time, the brake pinion rotates continuously for a predetermined period of time, so that the clutch Means do not cause malfunctions.

In the present invention, as the rotation holding means, for example, a spindle body which is added to the magnetic induction rotating body to increase the inertia force of the magnetic induction rotating body can be used. In such a configuration, even when the power supply to the stator coil is momentarily stopped and the rotor stops, the magnetically inducing rotor continues to rotate for a predetermined time with inertial force. For this reason, since the brake pinion continues to rotate during the momentary stop period, the clutch means does not cause a malfunction.

In the present invention, the rotation holding means includes a first magnetic induction magnet supported by the rotor as the magnetic induction magnet through the elastic body, and a second magnetic induction magnet disposed between the first magnetic induction magnet and the magnetic induction rotating body. In this case, in the rotation holding means, the first magnetic induction magnet moves toward the second magnetic induction magnet by the centrifugal force when the rotor magnet rotates, and the first magnetic induction magnet and the When the rotor magnet is magnetically connected to the second magnetic induction magnet while the rotor magnet is stopped, the first magnetic induction magnet is separated from the second magnetic induction magnet by the shape return force of the elastic body, so that the first magnetic induction magnet and the first magnetic induction magnet are separated. The second magnetic fluid also releases the magnetic connection of the magnet. In this configuration, even when the power supply to the stator coil is momentarily stopped and the rotor stops, the magnetically inducing rotor continues to rotate for a predetermined time with inertial force. For this reason, since the brake pinion continues to rotate during the momentary stop period, the clutch means does not cause malfunction.

The rotation holding means is also preferably provided with a spindle body for increasing the inertia force of the magnetic induction rotating body or the second magnetic induction magnet.

In the present invention, a spring or rubber can be used as the elastic body.

An embodiment of the present invention will be described with reference to the drawings.

(Example 1)

1 is a plan view showing a schematic configuration of a geared motor according to a first embodiment of the present invention. 2 is an explanatory diagram for explaining the operation of the geared motor shown in FIG. It is shown. 3 is a longitudinal sectional view of the rotor and the magnetic induction rotating body of the AC synchronous motor main body shown in FIG. In addition, since FIG. 2 is for demonstrating operation | movement of each mechanism component shown in FIG. 1, it differs from the layout shown in FIG.

1 and 2, the geared motor 1 of this embodiment has an AC synchronous motor main body 10 in which the rotor 11 faces the stator 15 (see FIG. 2), and the driving force is applied to the output shaft 16. As shown in FIG. The output shaft 16 is controlled by converting operation of the reduction gear lubrication heat 12 to be transmitted, the planetary gear mechanism 17 which rotates in conjunction with the rotor 11 to form a differential clutch, and the planetary gear mechanism 17. It has a clutch operating mechanism 40, and these components are housed in the case (18). The case 18 has a terminal 19 for supplying power to the AC synchronous motor main body 10 from the outside. The output shaft 16 is connected to the outside via the lever 30 (refer FIG. 2).

In the AC synchronous motor main body 10, a drive clutch hook 11b is formed at the tip of the rotation support portion 11a of the rotor 11 (see Fig. 3), and the drive clutch hook 11b is a rotor 11. It is opposed to the manual clutch claw 20a of the underside of the clutch pinion 20, which is supported coaxially with the rotor shaft 24 so as to be freely rotated. The clutch pinion 20 is biased in the direction in which the manual clutch hook 20a is separated from the drive clutch hook 11b of the rotor 11 by the compression coil spring 21.

In the biasing direction of the clutch pinion 20, the cam face 22a of the clutch lever 22 faces, and the clutch pinion 20 is pressed against the cam face 22a at all times. The cam surface 22a presses the clutch pinion 20 in the direction of the rotor 11 against the bias force of the compression coil spring 21, and engages the manual clutch hook 20a with the drive clutch hook of the rotor 11. It has a valley surface for releasing occlusion with the mountain surface 22b.

The clutch lever 22 is rotatably supported by the support shaft 23a such as the transmission gear 23 which drives the output shaft 16. The clutch lever 22 can oscillate a predetermined range by inserting the rotor shaft 24 to the arc-shaped long hole 22c laid along the cam surface 22a in contact with the clutch pinion 20. have. A part of the clutch lever 22 opposes the clutch lever operating groove 16b formed on the side surface of the output gear 16a of the output shaft 16, and engages the operation protrusion 22d. Therefore, the operation protrusion 22d which drives to the clutch lever operating groove 16b according to the rotation of the output gear 16a rotates the clutch lever 22, and changes the peak and valley of the cam surface 22a. As a result, the drive clutch hook 11b and the manual clutch hook 20a engage or separate from each other, and the transmission from the rotor rotation support 11a to the clutch pinion 20 is stepped.

As shown in Fig. 3, in the AC synchronous motor main body 10, the rotor 11 has a structure in which a ring magnet 11c is fixed to the outer circumferential side of the rotation support portion 11a. The rotary support portion 11a is formed with a hole 24a through which the rotor shaft 24 (see FIG. 1) is inserted.

The ring magnet 11c is composed of a ferrite magnet or a neodymium-iron-boron (Nd-Fe-B) magnet or the like, and the axial end thereof is in contact with the flange portion 11d formed on the rotational support portion 11a. Is positioned in the direction.

The ring-shaped magnet 11c is magnetized in each of the outer circumferential portion and the inner circumferential portion, and the outer circumferential side constitutes the rotor magnet 111 facing the stator 15, and the inner circumferential side constitutes the magnetic induction magnet 112. The rotor magnet 111 on the outer circumference side and the magnetic induction magnet 112 on the inner circumference side alternately magnetize to the N pole and the S pole in the circumferential direction, and the magnetization width in the circumferential direction is the same in the N pole and the S pole. . In addition, the magnetic poles are reversed in the rotor magnet 111 on the outer circumferential side and the magnetic induction magnet 112 on the inner circumferential side.

In this embodiment, the magnetic induction rotating body 13 is used for the clutch operating mechanism 40. The magnetic induction rotating body 13 is rotatably supported on the rotor 11 by being rotatably supported by the rotation supporting portion 11a of the rotor 11 inside the magnetic induction magnet 112. In other words, the outer circumferential surface of the upper end portion of the rotary support portion 11a of the rotor 11 is a radial bearing portion 11e for supporting the inner circumferential surface of the braking pinion 13a of the magnetically-inducing rotor 13 so as to rotate freely. A thrust bearing portion 11f which receives the lower end portion of the tubular portion 13d of the magnetic induction rotating body 13 in the thrust direction and overlaps the bearing in the radial direction is formed in the outer peripheral portion near the lower end of 11a. Is formed.

The magnetic induction rotating body 13 is a non-magnetic conductive ring 13b composed of copper, aluminum, or equivalent nonmagnetic metal on its outer circumference, and a back yoke ring 13c (dielectric ring) made of a magnetic material such as iron pressed into the inside thereof. Equipped with. Since the magnetic induction rotating body 13 is insert-molded with the nonmagnetic conductive ring 13b and the back yoke ring 13c, a braking pinion 13a is formed on the upper surface side by the resin portion.

In addition, in the magnetic induction rotating body 13, the annular recess 131 opens downward around the tubular portion 13d. In this embodiment, the ring-shaped spindle is made of metal inside the annular recess 131. 130 (rotation holding means) is being fixed.

In the AC synchronous motor main body 10 configured as described above, when the stator coil 150 is supplied with power, the rotor 11 rotates, and the magnetic induction rotor 13 magnetically induced by the magnetic induction magnet 112 rotates on the rotor 11. Done. As a result, the rotation of the brake pinion 13a is transmitted to the system support plate 26 through the linear gear 28 of the clutch operating mechanism 40 as described below with reference to FIGS. ), Thereby restraining the rotation of the ring gear 17f, that is, the inner tooth tooth 17e, of the planetary gear mechanism 17 as the clutch mechanism.

On the other hand, when the electricity supply to the stator coil 150 is cut off, the magnetic induction rotating body 13 stops rotation with the rotor 11, and the braking pinion 13a also stops rotation. Therefore, as described below, since the linear gear 18 is returned to the initial state by the negative force of the return spring 27, the system support plate 26 is free to rotate and release the restraint of the speed increase gear 14. As a result, the restraint of the ring tooth 17f, that is, the inner toothed tooth 17e, of the planetary gear 17 as the clutch mechanism is released.

However, in this embodiment, since the metal ring-shaped spindle 130 is added to the magnetic induction rotating body 13, the magnetic induction rotating body 13 is heavy. For this reason, even if the power supply to the stator coil 150 stops instantaneously and the rotor 11 stops, the inertia force of the magnetic induction rotating body 13 overcomes the influence of the magnetic induction magnet 112. Therefore, the magnetic induction rotating body 13 rotates by the moment of inertia. Therefore, since the linear gear 18 does not return to the initial state due to the force of the return spring 27 during the momentary stop period, the speed increase lubrication heat 14 is constrained, and the ring of the planetary gear mechanism 17 as the clutch mechanism is engaged. The restraint of the tooth 17f, that is, the inner tooth tooth 17e, is not released. This state continues until the power supply to the stator coil 150 is resumed.

Moreover, although the ring-shaped spindle 130 was used in the said form, the magnetic induction rotating body 13 may be an eccentric structure, for example using an arc-shaped spindle.

(Operation of the entire geared motor)

In the geared motor 1 configured as described above, in the initial state in which the stator 15 is energized, the drive clutch hook 11b and the manual clutch hook 20a are engaged with each other, and the rotation of the rotor 11 is the clutch pinion 20. Is passed directly).

The clutch pinion 20 transmits rotation to the input gear 17a of the planetary gear mechanism 17. The idle gear 17b of the planetary gear mechanism 17 is connected to the output gear 16a via the transmission gear 23, and rotation is prevented by the resistance of the external load on the output shaft 16.

For this reason, the planetary gear 17c rotates by the sun gear 17d which rotates integrally with the input gear 17a, and transmits rotation to the inner tooth tooth 17e which externally engages. The ring gear 17f which rotates integrally with the inner tooth gear 17e engages with the gear teeth 14a of the speed gear teeth 14 and engages with the gear teeth 14a and the integral gear 14b. The system support plate 26 formed with the on 26b is rotated at high speed.

On the other hand, the braking pinion 13a integrally formed with the magnetic induction rotating body 13 meshes with the linear gear 28 biased by the installation of the return spring 27.

The magnetic induction rotating body 13 rotates in association with the rotation of the rotor 11 by magnetic induction, and rotates the linear gear 28 against the biasing force of the return spring 27. The rotation restricting portion 28a constituting a part of the linear gear 28 is rotated together with the linear gear 28 to enter the rotational track of the system support plate 26 projection 26a which is rotating at high speed, and the projection 26a and Combination to restrict the rotation of the system support plate 26 and restrains the rotation of the speed increase gear wheels (14).

Since the rotation of the ring gear 17f of the planetary gear mechanism 17, that is, the inner tooth gear 17e, is prevented by being constrained by the speed increase gear wheels 14, the planetary gear 17c starts idle. The idle gear 17b of the planetary gear mechanism 17 transmits rotation to the intermittent reduction gear lubrication heat 12 by the revolution of the planetary gear 17c, and from the large gear 23b of the transmission gear 23 to the small wheel gear ( The output gear 16a is rotated via 23c. When the output gear 16a is rotated by a predetermined angle, the clutch lever 22 is rotated by the clutch lever operating protrusion 22d engaged with the clutch lever operating groove 16b to release the clutch pinion 20 from pressing. The engagement between the drive clutch hook 11b and the manual clutch hook 20a is released, and the clutch pinion 20 is freed. The free clutch pinion 20 transfers the rotational force caused by the external load of the output shaft 16 to the deceleration value sequence 12 to increase the speed.

The clutch pinion 20, which has been released from the pressing force and moved upward by the biasing force of the compression coil spring 21, has a stop member (not shown) in which the protruding engagement protrusion 20b is formed at the rotational position of the clutch lever 22. Contact to restrain the clutch pinion 20.

As long as the rotor 11 continues to rotate, the magnetic induction rotor 13 rotates so that the linear gear 28 is rotated against the secondary force of the return spring 27, and the projection of the rotation restricting portion 28a and the support plate 26 is performed. The engagement with (26a) is maintained and the restraint of the ring tooth 17f, that is, the inner tooth tooth 17e, of the planetary gear mechanism 17 is continued through the speed gear wheel 14.

On the other hand, since the planetary gear mechanism 17 prevents rotation of the sun gear 17d due to the restraint of the clutch pinion 20, the idle gear 17b becomes impossible to rotate, and the deceleration of the decelerating gear wheel 12 is stopped. The external load of the output shaft 16 is supported by the restraint portion.

When the energization to the stator 15 is cut off, the magnetic induction rotating body 13 with the rotor 11 stops rotating. The linear gear 18 returns to the initial state by the negative force of the return spring 27. The system support plate 26 is free to rotate, and releases the restraint of the speed increase gear 14. The external load of the unsupported output shaft 16 rotates the idle gear 17b from the deceleration difference wheel 12 side by the output gear 16a, and the sun gear 17d whose rotation is still constrained is fixed. The planetary gear 17c revolves, and the output shaft 16 rotates along the external load because the ring support 17f rotates through the speed increasing wheels 14 and the support plate 26 is free.

The output gear 16 which rotates together by the rotation by the external load of the output shaft 16 rotates the clutch lever 22 by the operation protrusion 22d by which the clutch lever operation groove 16b engages, and the cam surface 22a. The slope of the surface is returned, and the clutch pinion 20 is pressed to restore the occlusion of the drive clutch hook 11b and the manual clutch hook 20a.

As the operation of the geared motor according to the present invention, the lever 30 attached to the output shaft 16 by energizing the stator 15 rotates in one direction to a predetermined angle set by the clutch lever operating groove 16b in one direction, Rotation of the magnetic induction rotating body 13 interlocked with the rotor 11 interlocks the traction force due to the electronic non-contact slip action by mechanical restraint to fix a predetermined stop position. Return to the initial state. Since there is no mechanical friction part, no trouble occurs by friction.

For example, when applied to the drain valve of the washing machine, the valve is opened until the drain is completed. In addition, when applied to the ventilation line shutter or air damper, it is in communication with the ventilation line or air conditioner simultaneously.The shutter or damper is opened by the rotation of the ventilation line or the air conditioner, and the shutter or damper is supported in the open position while the ventilation line is rotating or the air conditioner is operating. do. When the electricity is prevented by the completion of drainage, the ventilation line or the air conditioner stop, the drain valve is closed and the ventilation line shutter or the air conditioner damper is closed.

(Example 2)

Fig. 4 is a longitudinal sectional view of the rotor and the magnetic induction rotating body of the AC synchronous motor used in the geared motor according to the second embodiment of the present invention. In addition, since the basic structure of this form is the same as that of Example 1, it demonstrates attaching | subjecting the same code | symbol to the part which has a common function, and demonstrates only the structure of the rotor and magnetic induction rotating body of AC synchronous motor here.

In the AC synchronous motor main body 10 used for the geared motor of this form as shown in FIG. 4, the rotor 11 opposes the inner cylinder part 114 provided with the shaft hole into which the support shaft 24 is fitted, and the stator 15. As shown in FIG. The outer cylinder portion 115 has a structure connected to the annular connecting portion 116 at the bottom, and the outer circumferential surface of the outer cylinder portion 115 alternately magnetizes the N pole and the S pole in the circumferential direction to constitute the rotor magnet 116. Doing.

In addition, the magnetic induction rotating body 135 of the clutch operation mechanism 40 is supported by the rotation support part 11a of the rotor 11 so that rotation is possible. In this magnetic induction rotating body 135, an induction ring 136 is arranged on the outer circumferential side, and a braking pinion 13a is formed on the upper surface.

A magnetic induction magnet 121 (second magnetic induction magnet) is disposed on the inner side of the magnetic induction rotor 13 so as to face the inner circumferential surface of the induction ring 136. The magnetic induction magnet 121 opposes the inner cylinder portion 114 of the rotor 11 as well.

The magnetic induction magnet 122 (first magnetic induction magnet) is attached to the inner cylinder portion 114 of the rotor 11 via a spring 137 (elastic material), while the magnetic induction magnet 121 is provided in the magnetic induction magnet 121. An induction ring 123 is attached to the surface on the side opposite to 122.

Here, the N pole and the S pole are alternately magnetized in the circumferential direction on the outer circumferential surfaces of the magnetic induction magnets 121 and 122.

In the AC synchronous motor main body 10 configured as described above, when the power is supplied to the stator coil 150, the rotor 11 rotates, and the spring 137 is extended by the centrifugal force, and the magnetic induction magnet 122 moves to the outside to induce magnetic induction. The magnet 121 is rotated. Therefore, the magnetic induction rotating body 13 magnetically induced by the magnetic induction magnet 121 also rotates on the rotor 11. As a result, the braking pinion 13a rotates.

On the other hand, when the energization to the stator coil 150 is cut off, as a result of the rotor 11 stopping the rotation, the spring 137 is reduced, and the magnetic induction magnet 122 moves inward, and the magnetism of the magnetic induction magnets 121 and 122 is reduced. Since the conventional connection is released, the rotation of the magnetic induction rotating body 13 is stopped.

However, in this embodiment, the rotation holding means using the magnetic induction magnet 121, 122, the spring 137, the induction ring 123 is configured. For this reason, even if the power supply to the stator coil 150 stops momentarily and the rotor 11 stops, the magnetic induction of the magnetic induction magnets 121 and 122 is released in the child state, so that the magnetic induction magnet 121 and The magnetic induction rotating body 13 is not affected by the magnetic induction magnet 122. Therefore, the magnetic induction magnet 121 and the magnetic induction rotating body 13 continue to rotate with the moment of inertia during the momentary stop period. Therefore, the braking pinion 13a also rotates briefly during the momentary stop period, so that the clutch mechanism described with reference to FIGS. 1 and 2 does not malfunction.

Moreover, although the spring 137 was used as an elastic body in the said form, rubber | gum etc. may be used. In addition, if a magnetic body is provided to the magnetic induction magnet 121 or the magnetic induction rotating body 13, the inertia force can be increased, so that the magnetic induction magnet 121 and the magnetic induction body 13 are inertia during the momentary stop. ) Can be continually rotated.

As described above, in the present invention, when the power is supplied to the stator coil, the rotor rotates, and the magnetically induced rotating body rotated therein. As a result, the rotation of the braking pinion is output to operate the clutch means. Here, even if the power supply to the stator coil is momentarily stopped and the rotor stops, in the present invention, since the rotation holding means maintains the rotation of the self-inducing rotating body for a predetermined time, the braking pinion rotates continuously for a predetermined period even during the instant stop period. The clutch means does not cause malfunction.

1 is a plan view showing a schematic configuration of a geared motor according to a first embodiment of the present invention.

2 is an explanatory diagram for explaining the operation of the geared motor shown in FIG.

3 is a longitudinal sectional view of a rotor and a magnetic induction rotor of the AC synchronous motor shown in FIG. 1;

Fig. 4 is a longitudinal sectional view of a rotor and a magnetic induction rotating body of an AC synchronous motor used in a geared motor according to the second embodiment of the present invention.

5 is a longitudinal sectional view of a rotor and a magnetic induction rotor of an AC synchronous motor used in a conventional geared motor.

※ Explanation of symbols about main part of drawing ※

1: Geared Motor 10: AC Synchronous Motor Body

11: rotor 11c: ring magnet

13: magnetic induction rotor 13a: braking pinion

13c: back yoke ring (induction ring) 15: stator

16: output shaft 17: planetary gear mechanism (clutch means)

40: clutch operating mechanism (clutch operating means)

111: rotor magnet 112: magnetic induction magnet

116: rotor magnet 121: magnetic induction magnet (second magnetic induction magnet)

122: magnetic induction magnet (first magnetic induction magnet)

123,136: guide ring 137: spring (elastic material)

150: stator coil

Claims (5)

A motor main body having a stator and a rotor magnet disposed opposite to the stator, an output shaft connected to the rotor of the motor main body and driven to rotate in response to a predetermined load, and clutch means for stairing the connection between the output shaft and the rotor. And a clutch actuating means for causing the clutch means to perform a step operation, wherein the clutch actuating means includes a magnetic induction magnet rotatable in conjunction with the rotor, an induction ring self-induced by the magnetic induction magnet, and the induction ring; A geared motor having a self-inducing rotating body having a braking pinion which is integrally rotated to maintain a connection state between the output shaft and the rotor, In addition, even when the power supply to the stator coil is stopped, it has a rotation holding means for maintaining the rotation of the magnetic induction rotating body for a predetermined time, and preserves the connection state between the output shaft and the rotor by the braking pinion Featuring a geared motor. The method of claim 1, And said rotation holding means is a spindle body that is added to said magnetic induction rotating body to increase the inertia force of said magnetic inducing rotating body. The method of claim 1, The rotation holding means comprises a first magnetic induction magnet supported by the rotor as the magnetic induction magnet through an elastic body, and a second magnetic induction magnet disposed between the first magnetic induction magnet and the magnetic induction rotating body. , In the rotation holding means, when the rotor magnet is rotated, the first magnetic induction magnet moves toward the second magnetic induction magnet by centrifugal force to magnetically connect the first magnetic induction magnet and the second magnetic induction magnet. Meanwhile, When the rotor magnet is stopped, the first magnetic induction magnet is separated from the second magnetic induction magnet by the shape return force of the elastic body, thereby releasing the magnetic connection between the first magnetic induction magnet and the second magnetic induction magnet. Geared motor, characterized in that. The method of claim 3, wherein The rotation holding means is also a geared motor, characterized in that it comprises a spindle for increasing the inertial force of the magnetic induction rotating body or the second magnetic induction magnet. The method according to claim 3 or 4, The elastic body is a geared motor, characterized in that the spring or rubber.