KR100415457B1 - A geared motor - Google Patents

Abstract

It is an object of the present invention to provide a geared motor which can reduce sliding noise and can be miniaturized when using a magnetic induction method as a clutch means and winding up and driving.

As a means for solving this problem, the motor 1, an output shaft 3 connected to the motor 11 and driven to rotate, a clutch means 4 which steps the connection between the output shaft 3 and the rotor 11, and In a geared motor having a clutch operating mechanism 5 for staircasely operating the clutch means 4, the clutch operating mechanism 5 is arranged in the rotor 11 and is attached to the magnet 11c attached to the rotor 11. The magnetic induction rotating body 16 is harvested and rotated on the rotor 11 by magnetic induction, and the clutch means 4 is stepped using the rotation of the magnetic induction rotating body 16.

Description

Geared Motors {A GEARED MOTOR}

The present invention mainly relates to an improvement of a geared motor used as a drive mechanism for driving a drain valve of a washing machine, a shutter of a ventilation line, or the like.

Conventionally, a geared motor serving as a driving source such as a drain valve of a washing machine or a shutter of a ventilation line is wound up by a motor drive, and the load member (wire or lever, etc.) is wound up, and the load member is fixed for a predetermined time at the wound position. It is configured to return the load member to its original position in the state. Such a geared motor is provided with a clutch between the rotor of the motor which becomes a drive source, and the output shaft to which the load member was connected. Then, the above-mentioned winding and fixing are performed while the clutch is connected, and the clutch is cut so that the load member returns to its original position by the load force of the load member.

It is also proposed to use the magnetic induction method as the clutch described above (see Japanese Patent Laid-Open No. 3-198638). In this device, the permanent magnet and the induction member are disposed to face each other within the deceleration lubrication link between the rotor and the output shaft, and the operation piece for clutch conversion is operated by using the induction member to follow the permanent magnet and rotate by magnetic induction. It is configured to.

In the geared motor described in Japanese Patent Application Laid-Open No. 3-198638, noise is generated when the gears are engaged with each other by arranging the electronic clutch portion in which the permanent magnet and the induction ring are disposed in front of the speed increasing lubrication line connected to the rotor. Becomes Moreover, since the electronic clutch part was formed during lubrication heat | fever, it also becomes a disadvantageous structure by the point which can reduce a space.

On the other hand, since the magnetic induction means turns the clutch on and off in a non-contact state by the magnetic induction force, the magnetic induction force is limited, and there is also a problem that the clutch operation mechanism cannot be sufficiently operated. This problem can be solved by constructing a magnet or an induction member with a strong one, but there is a problem that the whole apparatus becomes large or the material cost increases.

It is an object of the present invention to provide a geared motor that can reduce the space of the magnetic induction means, suppress the number of lubrication parts, and reduce the noise generated when the gear is engaged during driving.

Another object of the present invention is to provide a geared motor capable of reinforcing a magnetic induction force without increasing the size of a magnet or an induction member, thereby ensuring on and off of the clutch.

Figure 1 is a longitudinal cross-sectional view for explaining the internal mechanism of the geared motor of the embodiment of the present invention.

Fig. 2 is a sectional view showing a rotor with a magnet for magnetic induction to be a main part of the geared motor of Fig. 1 and an induction rotating body with a nonmagnetic conductive member.

3 is a plan view of FIG. 2 seen in the direction of arrow III. FIG.

4 is a schematic diagram for explaining magnetization of each of a rotor magnet and a magnet for magnetic induction.

5 is a plan view of the cover and the case top cover removed from the geared motor of FIG.

6 is a cross-sectional view showing a rotor with a magnetic induction magnet, which is a main part of a geared motor, which is a modified example of the embodiment of the present invention, and an induction rotating body with a nonmagnetic conductive member.

7 is a plan view showing a rotor with a magnetic induction magnet, which is a main part of a geared motor, which is another modified example of the embodiment of the present invention, and an induction rotor with a nonmagnetic conductive member.

In order to achieve the above object, the present invention has an output shaft connected to the rotor and rotationally driven, a clutch means for stairing the connection between the output shaft and the rotor, and a clutch operating mechanism for stepping the clutch means. The clutch operating mechanism has either a magnet for magnetic induction or a non-magnetic conductive member which rotates in rotation with the rotor and the other which rotates by harvesting to one side by magnetic induction, and interlocks with the other which rotates in harvest. It is arranged to connect the clutch means and at the same time arranged concentrically with respect to the rotor.

In the above-described invention, the clutch operating mechanism is arranged concentrically with respect to the rotor. Therefore, as in the conventional magnetic induction type geared motor, there is no need to arrange the electromagnetic clutch part in which the permanent magnet and the induction ring are disposed in front of the speed increasing lubrication heat connected to the rotor, and the noise generated at the engagement of each gear is eliminated. It becomes possible to reduce. In addition, the number of lubrication parts can be suppressed and the space of the magnetic induction means can be reduced.

Another invention is, in addition to the above-described invention, the clutch means is composed of a planetary gear support gear supporting a planetary gear, a planetary gear mechanism comprising a sun gear and a ring gear engaged with the planetary gear, and using the other rotation The rotation of the rotor is transmitted to the output shaft through two other teeth by preventing rotation of any one of the gear, the ring gear and the planetary gear support.

For this reason, the clutch means compactly enters the limbus column, and the lubrication thermoelectric body disposed between the rotor and the output shaft is miniaturized. As a result, the entire apparatus is downsized.

In addition to the above-described invention, another invention connects the planetary gear support gear to the output shaft side and uses the planetary gear mechanism as the deceleration mechanism. Therefore, the planetary gear mechanism has both a function as a clutch and a function as a deceleration mechanism, and has a compact structure in which the entire wheel heat is compact.

In still another aspect of the present invention, in addition to the above-described invention, a second clutch means for stairing the connection between the output shaft and the rotor is disposed between the rotor and the planetary gear mechanism serving as the first clutch means, and the rotor is now rotated while the two clutch means are disconnected. Rotation of the other side is used to lock either the ring gear or the sun gear, and in this locked state, the reverse rotation prevents the lock gear or the sun gear from being locked again by the external load applied to the output shaft. I place a mechanism. That is, by simultaneously locking both the ring gear and the sun gear by different means, it is possible to prevent reverse rotation due to the external load of the output shaft and to fix it securely at the reeled position.

Still another invention, in addition to the above-described invention, the second clutch means includes a rotor, a clutch pinion capable of rotating the rotor and a step by axially moving up and down, a spring member disposed between the rotor and the clutch pinion, a planetary gear mechanism and an output shaft. The clutch pinion is springed by interlocking with the gear disposed between and lowering the clutch pinion against the spring force of the spring member and connecting the rotor and the clutch pinion at the same time. It is composed of a clutch lever which is left under the spring force of the member to lift the rotor and the clutch pinion. Thus, since the clutch pinion which operates up and down in the axial direction is moved to the clutch lever independent from the lubrication heat, since the simple structure which steps the 2nd clutch means is made, assembling property becomes favorable.

Another invention is that in addition to the above-described invention, the second clutch means is connected to the gear between the planetary gear mechanism and the output shaft by the external load imposed on the output shaft. In this way, the second clutch means does not require a power source for operation conversion in particular, and is connected to the reverse rotation of the gear, thereby avoiding complexity of the device and contributing to miniaturization.

In addition to the above-described invention, another invention has a lock release means for releasing the connection between the magnetic induction rotating body and the ring gear or the solar gear when the driving of the motor is stopped to stop the rotation of the magnetic induction rotating body. By means of means this connection is released so that the output shaft is reversed by an external load. In this way, the output shaft rotates reversely by the external load only by stopping the driving of the motor, so that the output shaft can be returned from the fixed position to the open position with a simple configuration.

Another invention is in addition to the above-described invention, the magnet is formed in a different shape than the rotor magnet for driving the rotor. For this reason, the rotor magnet can have the best (or minimum) characteristics for rotor driving, and the magnet for induction can have the best characteristics for magnetically inducing a nonmagnetic conductive member.

In other words, a configuration in which the rotor magnet is combined with the magnetic induction magnet can be considered, but in such a case, it is necessary to enhance the magnetic induction force to improve the torque caused by the magnetic induction and to make sure that the stairs of the clutch are operated in a certain manner. In this case, if the magnetic force of the rotor magnet is simply strengthened, for example, there may be a problem such as causing a step out. According to the above-described invention, since the magnets for magnetic induction and the rotor magnets are formed in different shapes, both magnets can be configured with the best magnets in accordance with their purpose. Therefore, even if the magnetic force of the magnet is made stronger, the magnetic induction force can be configured so that it does not affect the motor characteristics. Thereby, the certainty of the operation | movement of the clutch operation mechanism which performs the step of a clutch means can be improved, and a joint of a clutch means can be reliably performed.

In addition to the above-described invention, the present invention is characterized in that the magnet is directly fixed to the rotor magnet, and the magnetization width in the circumferential direction of both magnets is matched and the adjacent magnetic poles of the two magnets are different. As a result, the entire device becomes a more compact structure, and each magnetic flux output from both magnets does not affect the magnet on the other side more.

In addition to the above-described invention, another invention is characterized in that a magnet is disposed apart from the rotor magnet, and a nonmagnetic conductive member is disposed in the separation portion. Therefore, each magnetic flux output from both magnets does not affect the magnet of the other side more reliably.

In addition to the above-described invention, the invention further aligns the magnet of the rotor magnet in anisotropy, outputs the sine wave magnetic flux from the rotor magnet to the stator side facing the rotor magnet, and isotropically magnetizes the magnet. The magnet is arranged so as to output a magnetic flux of a square wave from the magnet to the nonmagnetic conductive member. As a result, the rotor magnet becomes more capable of improving motor characteristics, and at the same time, the magnet exhibits more magnetic induction.

Another geared motor of the present invention has an output shaft connected to the rotor for rotational driving, a clutch means for stairing the connection between the output shaft and the rotor, and a clutch operating mechanism for stepping the clutch means. And a magnet for magnetic induction or a nonmagnetic conductive member which rotates in interlocking direction and the other which rotates by harvesting to one side by magnetic induction, and configured to convert the clutch means into a joint by interlocking with the other rotating in the direction of harvesting. And a driving member driven by the rotor, and a transmission member receiving the driving force of the driving member through the viscous body and transmitting the driving force to the other side.

According to the above-described invention, the magnet for magnetic induction and the non-magnetic conductive member are connected by a viscous body, and the driving force of the rotor as well as the magnetic induction force is rotated by utilizing the viscosity of the viscous body. That is, the driving torque by the magnetic induction force is assisted by the viscosity of the viscous body. As a result, the rotational torque caused by magnetic induction can be reinforced, and the certainty of the operation of the clutch operating mechanism that performs the steps of the clutch means can be improved, and the joint operation of the clutch means can be reliably performed.

Another invention is in addition to the above-described invention, one side is attached to the first rotating body having a drive member while the other is attached to the second rotating body having a transmission member and the rotation of the second rotating body is connected to the first rotating body. It is characterized by arranging a rotational bearing portion for supporting the rotational portion and having a viscous body on the rotational bearing portion. In this way, the member having a viscous body for reinforcing magnetic induction is composed of a rotating body with a magnet integrally attached and a rotating body with a non-magnetic conductive member, so that the number of parts can be reduced and the whole device can be configured. It can be made compact and the number of assembly processes can be reduced.

Another invention is characterized in that the viscous body is composed of grease in addition to the above-described invention. Therefore, by setting the viscosity of the grease, it is possible to freely set the torque assisting force of the magnetic induction force such as exerting the viscosity so as to assist the torque only at high speed rotation.

Further, in addition to the above-described invention, the clutch operating mechanism includes a clutch converting member for interlocking rotation with the other and converting the steps of the clutch means, and at the same time, using the magnetic induction force to shift the clutch converting member to one side. Rotate the other side when converting the clutch means from the end to the joint by rotating it, and rotate the clutch converting member to the other side without using the magnetic induction force. It was characterized by the high speed.

According to the above-described invention, when the clutch means is converted from a break to a joint using magnetic induction, the other rotational speed is configured to be high. Therefore, when the clutch is converted into a joint using the magnetic induction force, the viscous body acts as a torque auxiliary member of the magnetic induction force by high speed rotation. On the contrary, during the rotation from the joint to the end of the rotation which is opposite to the rotation using the magnetic induction force, the viscous body acts as a normal lubricant without generating torque, and the second rotating body is smooth with respect to the first rotating body. Relative rotation. For this reason, the operation | movement of a clutch conversion member can be smoothly converted according to the rotation direction.

Another invention is that in addition to the above-described invention, the clutch converting member is biased in the direction of performing the operation of converting the clutch means from the joint to the stop, and at the same time, the other converts the clutch means from the clutch to the joint against the bias force received by the clutch converting member. It is characterized by being rotated by the magnetic induction force in the direction. Because of this structure, the clutch means can be reliably changed from the joint to the disconnection by the negative force. In addition, as described above, when the break-to-continue operation is achieved, the torque assist by the viscous body is obtained, so that the conversion operation from the break to the joint is assured, and both operations of the break to the joint and the joint to the break are assured. .

Another geared motor of the present invention is a clutch operating mechanism having an output shaft connected to a rotor for rotational driving, a clutch means for stairing the connection between the pullout shaft and the rotor, and a clutch converting member for converting the stairs of the clutch means. The clutch operating mechanism has either one of a magnetic induction magnet or a non-magnetic conductive member which is interlocked with the rotor, and the other of which is harvested and rotated on one side by magnetic induction, and the clutch is converted to the other of the harvested rotation. And a biasing member for biasing the clutch converting member in a direction for converting the clutch means to disconnection by interlocking the members, and the other side of the biasing member against the one side using magnetic induction. When the clutch means is converted into a joint by harvesting rotation against the force, the force of the biasing member It is characterized in that it is configured to be weaker than the counter-force when converting the stage to break.

According to the above-described invention, when the clutch means is converted from a break to a joint using a magnetic induction force, the bias force of the biasing member is weakened, so that the rotational force by the magnetic induction force is efficiently transmitted to the rotating body, and the clutch means You can more clearly convert from breaks to joints. In addition, when the clutch means is changed from the joint to the disconnection, the biasing force of the biasing member is returned to its original state, thereby ensuring the certainty of this operation.

Another invention is characterized in that in addition to the above-described invention, the biasing member is formed of a shape memory alloy which returns to the original biasing force when the heating force is weakened and the heat is cooled. Therefore, the characteristic of the above-described biasing member can be realized with an easier configuration.

Next, an embodiment of the geared motor of the present invention will be described with reference to FIGS. 1 to 5.

As shown in FIG. 1, the geared motor according to the embodiment of the present invention is connected to an AC motor 1 serving as a driving source and an output shaft connected to the rotor 11 of the AC motor 1 through a driving wheel heat 2 to rotate. 3) a planetary gear mechanism 22 serving as a first clutch means for stepping the connection between the output shaft 3 and the rotor 11, and a clutch operating mechanism 5 for stepping the first clutch means. And a second clutch means 4 which steps the connection between the output shaft 3 and the rotor 11 and a clutch lever 41 which steps the second clutch means 4. Each of these mechanisms is housed in a case body 12 composed of a case body 12a and a case top cover 12b.

The geared motor transfers the driving force of the AC motor 1 to the output shaft 3 side by connecting the second clutch means 4 to the joint (meaning that the following means = on), and the slide is press-fitted to the tip of the output shaft 3. The pinion 7 is rotated to pull the lever 8 to which a predetermined load is applied. Then, the clutch pinion 21 which disconnects the connection between the rotor 11 and the output shaft 3 and frees the rotor 11 by cutting off the above-described second clutch means 4 (meaning of being disconnected = off). ) By locking the clutch lever 41 to prevent rotation of each part of the driving wheel 2 in the reverse direction (meaning the opposite direction to the lifting of the lever 8), and pulling the lever 8 to a predetermined position. The lever 8 is fixed at the later position. All of these states are performed by maintaining the energization to the AC motor 1. In this state, by stopping the energization to the AC motor 1 again, the first clutch means is cut off, and the fixing force for fixing the lever 8 is released, so that the lever 8 according to the load imposed on the lever 8 itself. It is supposed to return to the position before it was raised.

Next, the configuration for realizing the operation will be described in detail.

An AC motor 1 serving as a driving source for operating the lever 8 is disposed on the bottom face side in the case body 12a. The AC motor 1 includes a stator part 14 disposed in a motor case 13 formed in a cup shape, and a rotor 11 disposed to face the stator part 14 on the inner circumference of the stator part 14. And a rotor shaft 15 supporting the rotor 11 so as to rotate freely.

Next, the rotor 11 and the induction rotating body 16 disposed inside the rotor 11 will be described with reference to FIGS. 2 and 3.

As shown in Fig. 2, the rotor 11 includes a rotation support portion 11a having a hole through which the rotor shaft 15 (see Fig. 1) is inserted, and an upper end side thereof on the outer circumferential side of the rotation support portion 11a. It has the substantially ring-shaped rotor magnet 11b fixed so that it may protrude. This rotor magnet 11b consists of a ferrite magnet. On the inner circumferential surface of the rotor magnet 11b, a magnet for induction ring-shaped magnet 11c composed of a neodymium-iron-boron (Nd-Fe-B) magnet having a stronger magnetic force than that of the rotor magnet 11b is provided. Will be fitted. The axial end part of this ring-shaped magnet 11c is in contact with the flange part 11a1 formed in the rotation support part 11a. As a result, the ring magnet 11c is positioned in the axial direction.

In this way, the ring magnet 11c is directly bonded to and fixed to the inner concentric portion of the rotor magnet 11b having a different shape, and is configured to rotate integrally with the rotor magnet 11b. More specifically, as shown in FIG. 3, four small concave portions 11m are formed on the inner circumferential surface of the rotor magnet 11b at equal intervals, and four small convex portions formed on the outer circumferential surface of the ring magnet 11c. The ring magnet 11c is fitted in the axial direction with respect to the rotor magnet 11b, positioning 11n to these four recesses 11m.

In addition, a thermosetting adhesive is applied in advance to the inner peripheral surface of the rotor magnet 11b. And both magnets 11b and 11c are heated, and the adhesive mentioned above hardens and integrates at the position.

In the present embodiment, the ring magnet 11c is inserted into the rotor magnet 11b. However, the rotor magnet 11b may be inserted into the ring magnet 11c.

4, the rotor 11 integrated as described above is configured so that the magnetization widths of the magnets 11b and 11c coincide in the circumferential direction and the adjacent magnetic poles are different. And the rotor magnet 11b arrange | positioned at the outer peripheral side is orientated polarly (see the dotted line of FIG. 4). For this reason, the rotor magnet 11b has a stronger sine wave with respect to the ring-shaped magnet 11c side disposed adjacent to the inside of the stator portion 14 (see FIG. 1) side of the rotor magnet 11b. It is configured to output the magnetic flux. As a result, the rotor magnet 11b can efficiently output the magnetic flux to the stator part 14 side without being influenced by the magnetism of the ring-shaped magnet 11c adjacent to the inside, and can derive the drive characteristics of the AC motor 1. have.

On the other hand, the ring-shaped magnet 11c disposed inside the rotor magnet 11b is oriented isotropically (see arrows x and y in FIG. 4). Therefore, the rotor magnet 11b side which is disposed adjacent to the outside of the nonmagnetic conductive member (referred to as the next nonmagnetic conductive ring) 16a (see Fig. 2) that is disposed opposite to the inner side of the ring-shaped magnet 11c. It is configured to output a stronger magnetic flux of square waves for. For this reason, the ring-shaped magnet 11c can efficiently output the magnetic flux to the non-magnetic conductive ring 16a side without being affected by the magnetism of the rotor magnet 11b adjacent to the outer side, so that the magnetic induction force is made stronger. have.

As described above, in the present invention, the ring-shaped magnet 11c is configured in a different shape from the rotor magnet 11b so that the properties of each magnet, specifically, the magnetic force or magnetization direction, can be different in both magnets 11b and 11c. have. Therefore, the magnetic induction force for following the non-magnetic conductive ring 16a can be strengthened by using a magnet having a large magnetic force in the ring-shaped magnet 11c without considering the influence on the rotor magnet 11b. This improves the reliability of the operation of the induction rotating body 16 which rotates by the magnetic induction force of the ring-shaped magnet 11c. As a result, the reliability of the operation of the clutch operating mechanism 5 described later is improved.

In addition, the rotor magnet 11b disposed opposite to the stator portion 14 irrespective of the ring-shaped magnet 11c is a low-cost magnet having a minimum function for driving the AC motor 1 or vice versa to improve the motor characteristics. The magnet with the function of can be used.

As shown in Fig. 2, the non-magnetic conductive ring 16a and the back yoke ring 16b which are disposed opposite to the ring-shaped magnet 11c are attached to the inner side of the ring-shaped magnet 11c described above, and the pinion portion 16d is attached. Induction rotating body 16 having a is arranged to rotate freely. In addition, when the induction rotor 16 rotates the ring-shaped magnet 11c by the rotation of the rotor 11, the non-magnetic conductive ring 16a follows the rotation by the magnetic induction by the rotation of the ring-shaped magnet 11c. As a result, the induction rotating body 16 rotates following the rotor 11 as a whole. The ring magnet 11c and the non-magnetic conductive ring 16a serve as driving sources for operating the clutch operating mechanism 5 described later, and the pinion portion 16d of the induction rotating body 16 is described below. It is interlocked with (25). The configuration of the induction rotating body 16 will be described later.

A hook 11d is formed at the upper end of the rotation support portion 11a of the rotor 11. This hook 11d constitutes a part of the driving wheel 2 as described later, and engages with a hook 21d formed at the lower end of the clutch pinion 21 that becomes part of the second clutch means 4, It is for transmitting the rotational force of the rotor 11 to the clutch pinion 21. Then, the hooks 11d and 21d are coupled to each other, and the second clutch means 4 is connected to the state where the rotational force of the rotor 11 is transmitted to the output shaft 3 side through the clutch pinion 21. Shall be. On the other hand, it is assumed that the second clutch means 94 is in a state where the hooks 11d and 21d are not coupled to each other so that the rotational force of the rotor 11 is not transmitted to the output shaft 3 side. In other words, the hook 11d at the upper end of the rotor 11, the hook 21d at the lower end of the clutch pinion 21, and the mechanism for releasing these hooks 11d and 21d are provided with the second clutch means 4. do.

A compression coil spring 18, which becomes part of the second clutch means 4 for engaging the rotor 11 and the clutch pinion 21, is fitted into the upper inner peripheral portion of the rotation support portion 11a as shown in FIG. A groove 11f for insertion is formed. In addition, the outer circumferential surface of the upper end portion of the rotary support portion 11a of the rotor 11 serving as the first rotating body is a radial bearing supporting the inner circumferential surface of the pinion portion 16d of the induction rotating body 16 serving as the second rotating body. It is part 11g. In addition, a lower end portion of the tubular portion 16c of the induction rotating body 16 is received in the thrust direction at the outer circumferential side portion near the lower end of the rotation supporting unit 11a, and at the same time, in the radial direction of the induction rotating body 16. The thrust bearing part 11e which serves also is arranged. And both of these bearing parts 11e and 11g formed in the rotor 11 which become a 1st rotation become a rotation support part which supports the rotation of the guide rotor 16 which becomes a 2nd rotation body.

The radial bearing portion 11g and the thrust bearing portion 11e serving as the rotation bearing portion become the lubricating lubricant of the induction rotating body 16 and at the same time induction rotation when the induction rotating body 16 rotates on the rotor 11. A viscous body, specifically grease, is provided for assisting the torque (the application portion of the grease is indicated by the symbol G). In addition, it is preferable to use the grease, for example, the polyalpha olefin type grease etc. which hardly generate a viscosity change by temperature change. It is assumed that the temperature of the grease rises when the rotor 11 and the induction rotating body 16 rotate at high speed, but at this time, it is preferable that there is no viscosity change in performing torque assist for the following rotation of the induction rotating body 16. to be.

In the geared motor of the present invention, when the induction rotor 16 follows the rotor 11 by magnetic induction and converts the first clutch means (which is equivalent to the planetary gear mechanism 22) to be described later from disconnection to joint. The rotation speed of the rotor 11 is very fast. Therefore, although the induction rotating body 16 tries to follow the rotor 11 of a quick rotational speed, the speed difference is large, and the speed difference of both 11 and 16 becomes large.

On the other hand, after the energization to the AC motor 1 is stopped and the rotor 11 is stopped, the preload difference is caused by the biasing force of the coil-like spring member 39 (see FIG. 5) made of a shape memory alloy, which becomes a biasing member described later. As the 25 rotates in the opposite direction, the induction rotating body 16 also rotates in the opposite direction in conjunction with the operation of the line tooth 25. The operation at this time is to convert the second clutch means from a joint to a break. At this time, only the induction rotating body 16 rotates with respect to the rotor 11 in the stopped state, but the rotation speed itself is very slow.

In addition, the following rotation torque of the induction rotating body 16 generated by the grease described above can be represented by the following equation.

M = π ² * (d / c) * (L / d) * μ * n * d ³

(M: moment (driving torque), d: shaft diameter, c: bearing clearance, L: bearing width, μ: viscosity, n: rotational speed)

In this way, the following rotating torque of the induction rotating body 16 generated by the grease is proportional to the number of revolutions, the viscosity, and the like, and becomes a relational expression that increases by three powers with respect to the shaft diameter.

Therefore, the grease operates to assist the rotational torque of the following rotation with respect to the rotor 11 of the induction rotor 16 by its viscosity when the speed difference between the rotor 11 and the induction rotor 16 is large. Therefore, the grease acts to further assist the following rotational torque caused by magnetic induction, and acts to reliably convert the first clutch means from disconnection to joint. On the other hand, in the non-following rotation with a slow rotation speed, the viscosity does not act to assist the following rotation but acts as a simple lubricant. For this reason, it acts so that the conversion from the joint to the stop of the first clutch means can be assured without disturbing the return operation of the spring member 39.

In addition, the grease mentioned above may be provided in either one of both bearing parts 11e and 11g which comprise the rotation support part. When the grease that is a viscous body is attached only to the thrust bearing part 11g in structure, the grease does not scatter to the outside in a space where the outside and the compartment are blocked by the rotor 11 and the induction rotating body 16. have.

In this embodiment, the grease is used as a lubricant using a polyalpha olefin type. However, the grease may be a torque auxiliary grease, specifically, an oil damper silicone grease. In this embodiment, the grease is hard to generate viscous change due to temperature change. On the contrary, if the viscous change is generated by harvesting the temperature change, it acts as a torque assist during start-up and starts to rotate at a certain speed or more. Can be configured not to.

3, the recessed part 11k is arrange | positioned in four places equally to the circumferential direction in the axial end surface of the rotor magnet 11b of the rotor 11 as shown in FIG. When the rotor 11 starts to reverse rotation at the time of starting, these recessed parts 11k are fitted with the projection 25c (refer FIG. 5) formed in the tooth gear 25 in order to prevent this reverse rotation. By this configuration, the rotor 11 is corrected in the normal rotation direction.

The induction rotating body 16 has a non-magnetic conductive ring 16a made of steel or the like at its outermost circumference, and a back yoke ring made of a magnetic material (specifically, steel or the like) inside the non-magnetic conductive ring 16a ( 16b) is press-fitted and consists of insert molding with resin.

The nonmagnetic conductive ring 16a disposed at the outermost circumference of the induction rotating body 16 configured as described above is a member that follows the ring-shaped magnet 11c as described above, and is nonmagnetic and conductive. Member, specifically, a member formed of metal such as copper or aluminum.

Accordingly, the nonmagnetic conductive ring 16a is driven by the magnetic induction force of the ring-shaped magnet 11c to rotate in the same direction as the rotor 11. That is, the above-described ring-shaped magnet 11c and the induction ring 16a are magnetic induction rotating means for driven rotation of the induction rotating body 16 with respect to the rotor 11 by magnetic induction, and the induction rotating body 16. Becomes a rotating body that follows the rotor 11 by magnetic induction.

In addition, in this embodiment, a ring-shaped magnet 11c is attached to the rotor 11 side which is one of the magnetic induction rotating means, and a nonmagnetic conductive ring is placed on the induction rotating body 16 which is the other side of the magnetic induction rotating means. Although 16a is attached, the ring magnet 11c and the nonmagnetic conductive ring 16a may be reversed.

As described above, in the geared motor of the embodiment of the present invention, the induction ring 16a, which is a part of the clutch operating mechanism 5 using the magnetic induction force, is coaxially disposed on the inner circumferential portion of the rotor 11 of the motor 1. Doing. Therefore, it is not necessary to specifically arrange the lubrication part for generating this magnetic induction force in the drive lubrication heat 2 described below. Therefore, since the gears of the driving wheels 2 need not be increased in particular, the noise caused by the frictional noise of the gears constituting the wheels can be reduced. In addition, the space for arranging the driving wheels 2 can be enlarged, thereby increasing the degree of freedom in designing the part, and conversely, the space can be omitted, thereby miniaturizing the device.

In the present embodiment, in the rotor 11 serving as the first rotating body, bearings 11e and 11g serving as rotating support portions for supporting rotation of the nonmagnetic conductive member 16a serving as the second rotating body are disposed. And a viscous body (grease) is applied to the bearings 11e and 11g. That is, the structure is provided with the viscous body which assists the drive torque by magnetic induction by viscosity between the rotating body with which the magnetic induction magnet 11c was directly attached, and the rotating body with which the nonmagnetic conductive member 16a was directly attached. Becomes

The torque assisting viscous body may be provided at any site as long as it is a site where the two magnetically inducing rotors face each other, i. For example, the following rotating body is disposed on the rotor side of the magnetic induction rotating body (in this embodiment, the ring-shaped magnet 11c is equivalent) and the rotating body on the rotor side of the magnetic inducing rotating body. The above-mentioned viscous body may be arranged between the other rotating bodies connected to the rotating body (corresponding to the nonmagnetic conductive member 16a in this embodiment).

Next, a clutch operating mechanism 5 for converting the drive wheel heat 2 for transmitting the driving force of the AC motor 1 to the output shaft 3 and the first clutch means arranged in the drive wheel heat 2 is shown. It demonstrates using 1 and FIG.

The drive lubrication 2 is described in the right half of Fig. 1, which is a cross-sectional view of the development, and has a planetary gear mechanism 22 having a clutch pinion 21 and a receiving tooth 32b engaged with the clutch pinion 21. And an output shaft 3 including a transmission gear 23 that receives the rotational force of the planetary gear mechanism 22, and an output gear portion 3a that meshes with the transmission gear 23. This drive lubrication heat 2 becomes deceleration lubrication heat which decelerates rotation of the rotor 11 and transmits it to the output shaft 3.

Each part which comprises the drive wheel heat 2 is demonstrated in more detail. The clutch pinion 21 which becomes the gear of the 1st stage of the drive wheel row 2 is arrange | positioned coaxially with the rotor 11 as mentioned above. That is, the clutch pinion 21 is fitted to the rotor shaft 15 so as to rotate freely, and its bottom surface is disposed opposite to the upper surface of the rotor 11. The lower end surface of the clutch pinion 21 is provided with a hook 21d freely engaged with the hook 11d formed on the upper end of the rotor 11. In addition, the clutch pinion 21 is placed on the rotor 11 with the compression coil spring 18 interposed therebetween, and is biased upward in FIG. 1 by the spring bias force of the compression coil spring 18.

The cam surface 41a of the clutch lever 41 faces the upper end portion of the clutch pinion 21. For this reason, the clutch pinion 21 is pushed to the cam surface 41a by the constant force of the compression coil spring 18 at all times. This cam surface 41a is comprised by the pushing part 41c which becomes a mountain, and the part which becomes a valley. The clutch lever 41 is supported so that the one end side may freely rotate on the shaft supporting the transmission gear 23. The other end side of the clutch lever 41, that is, the side having the cam face 41a has a long hole 41b (see FIG. 5), and the rotor shaft 15 is fitted into the long hole 41b so that only a predetermined range is oscillated. It is composed.

In addition, the clutch lever 41 is provided with the operation protrusion 41e (refer FIG. 1) which goes into the clutch lever operation groove 3b formed in the opposing surface side of the output gear part 3a. For this reason, when the rotational force of the rotor 11 is transmitted to the output gear part 3a, or the output shaft 3 rotates in either direction by a load, the operation protrusion 41e is guided to the clutch operation groove 3b. Accordingly, the clutch lever 41 is rotated. In other words, the clutch lever 41 is configured to perform the step change operation of the second clutch means 4 by converting the peak and valley of the cam surface 41a described above corresponding to the rotation angle of the output shaft 3.

In addition, the pushing portion 41c pushes the clutch pinion 21 toward the rotor 11 until energization is performed in the initial state where no energization is conducted, thereby pulling the lever 8 to a predetermined position. Thereby, the hook 21d of the clutch pinion 21 and the hook 11d of the rotor 11 are engaged, and the rotor 11 and the clutch pinion 21 are rotated integrally. In other words, the second clutch means 4 is in a joint state.

When the output gear 3a finishes the predetermined rotation, the clutch lever 41 is rotated by the guidance of the clutch lever operating groove 3b to convert the peak and valley of the cam surface 41a. Accordingly, the clutch pinion 21 moves upward by the spring bias force of the compression coil spring 18, and the clutch pinion 21 and the rotor 11 are loosened. In other words, the second clutch means 4 is switched to the disconnected state.

As a result, the connection between the rotor 11 and the output shaft 3 is broken. For this reason, each gear constituting the driving wheel 2 is intended to rotate in the reverse direction under the load of the lever 8. However, as described above, the clutch lever 41 rotates so that the restraining member disposed on the underside of the clutch lever 41 enters the rotational track of the engaging projection (not shown) disposed on the upper portion of the clutch pinion 21, and the clutch is engaged. The pinion 21 is locked. For this reason, the sun gear 32 of the planetary gear 22 engaged with the clutch pinion 21 is locked. In addition to this state, since the energization to the AC motor 1 continues, the ring tooth 33 is also locked by the magnetic induction force. As a result, the gears of the drive wheels 2 are locked and do not rotate in the opposite direction even under the load of the lever 8.

When the electric current to the AC motor 1 is cut off, the induction force to the induction rotating body 16 is lost, and the tooth gear 25 is returned by the bias force of the spring member 39, and the clutch gear 27 and the tooth gear ( Coupling with the rotation control section 26 of 25) is released. As a result, the clutch gear 27 becomes free, and as a result, the ring gear 33 of the planetary gear mechanism 22 becomes free. Accordingly, each of the gears constituting the driving wheels 2 is rotated in a direction in which the lever 8 is pulled out by the load force of the lever 8, i.e., at the time of driving the motor. Following the reverse rotation of the output gear 3a in the drive wheel 2 during the reverse rotation, the above-described clutch lever 41 rotates to the position before the lever 8 is pulled up. As a result, the peaks and valleys of the cam surface 41a of the clutch lever 41 are converted. As a result, the pushing portion 41c of the clutch lever 41 pushes the clutch pinion 21 toward the rotor 11 side, and the second clutch means 4 is engaged, but the first clutch means is cut off. Therefore, the lever 8 can move to the position before raising.

The planetary gear mechanism 22 is also provided with a receiving tooth 32b that is engaged with the clutch pinion 21 and receives a driving force from the rotor 11 side, and a transmission gear 32a for transmitting the driving force to the planetary gear 36. Ring gear provided with the sun gear 32, the inner gear part 33a which meshes with the planetary gear 36, and the outer gear part 33b which meshes with the speed increase gear 28 of the last part of the clutch operating mechanism 5. As shown in FIG. And a planetary gear support gear 34 including a support plate 34a for freely rotating the planetary gear 36 and a pinion portion 34b that meshes with the transmission gear 23, respectively.

For this reason, the ring gear 33 engaged with the speed increase gear 28 is engaged by engaging between the rotation restricting portion 26 of the clutch tooth 25 and the clutch gear 27 to stop the operation of each member of the clutch operating mechanism 5. When the rotation of) stops between the sun gear 32 and the planetary gear support gear 34, the rotational force of the rotor 11 transmitted to the sun gear 32 through the clutch pinion 21 is planetary. It is transmitted to the output gear part 3a via the transmission gear 23 which meshes with the gear support gear 34, and the output shaft 3 is made to rotate with the slider pinion 7. As shown in FIG. As a result, the lever 8 with the slider difference (not shown) which meshes with the slider pinion 7 is pulled up by the driving force of the AC motor 1 against the load applied to the lever 8 itself.

On the other hand, the clutch operating mechanism 5 is for performing the steps of the first clutch means arranged in the above-described drive wheels 2. That is, the clutch operating mechanism 5 is engaged with the induction rotating body 16 and the induction rotating body 16 which are described in the left half of FIG. 1, which is a sectional cross-sectional view, which is guided and rotated by the ring-shaped magnet 11c described above. At the same time, the spring gear 39, which is a rotating member that is biased in the direction of releasing the engagement with the clutch gear 27, and the rotation control portion 26 formed on the tooth gear 25 freely Meshes with the clutch gear 27 provided with the engaging projection 27a on the outer circumferential surface and the small tooth gear 27b of the clutch gear 27, and at the same time the ring gear 33 of the planetary gear mechanism 22 is engaged. It consists of an interlocking gear 28. The planetary gear mechanism 22 meshes with the speed increase gear 28 which is a part of the deceleration lubrication heat in the driving wheel 2 and is the last part of the clutch wheel 5 as described above, The first clutch means is subjected to the conversion by a predetermined operation.

When the clutch operating mechanism 5 energizes the AC motor 1, the clutch control unit 25 rotates the rotation control unit 26 to a predetermined position by rotating the tooth car 25 against the opposing force of the spring member 39 using magnetic induction. It is configured to move, and to couple the rotation restriction 26 and the clutch gear 27. By this engagement, each member constituting the clutch operating mechanism 5 is locked up to that time. Then, in the planetary gear mechanism 22 serving as the first clutch means, the rotation of the ring gear 33 is locked and the joint between the sun gear 32 and the planetary gear support gear 34 is engaged.

In addition, when the above-mentioned second clutch means 4 is also joined in the state where the sun gear 32 and the planetary gear support gear 34 are jointed in this way, the rotation of the rotor 11 causes the planetary gear mechanism 22 to rotate. Is transmitted to the output shaft 3 side through the solar gear 32 and the planetary gear 34. As a result, the clutch lever 41 is rotated in conjunction with this operation, while the lever 8 is wound up. Only the second clutch means 4 is disconnected after the rewinding operation is finished, but the sun gear 32 of the first clutch means is maintained because each tooth constituting the clutch operating mechanism 5 remains locked by magnetic induction. ) And the planetary gear support gear 34 are still connected. At this time, since the clutch lever 41 is rotated to the position where the clutch pinion 21 is locked as described above, and the clutch pinion 21 is locked, each gear of the driving wheel train 2 is locked and the lever ( The lever 8 is fixed in the reeling position without being rotated in the reverse direction even under the load force of 8).

In this state, when the energization to the AC motor 1 is cut off again and the magnetic induction force between the rotor 11 and the induction rotating body 16 is extinguished, the preliminary wheel 25 is driven by the spring force of the spring member 39. Rotation in the direction opposite to the direction described earlier loosens the coupling between the rotation restricting portion 26 and the clutch gear 27. Accordingly, the locked state of the clutch operating mechanism 5 is released, but the clutch pinion 21 is still locked by the clutch lever 41, so that the ring gear 33 and the planetary gear support gear 34 are joined at this time. Then, the rotational force of the output shaft (3) to be reversed by external load is transmitted to reverse the driving lubrication (2), and is transmitted to the clutch gear (27) through the planetary gear mechanism (22) and the speed gear (28) to clutch the clutch. The gear 27 is free to rotate. As a result, the fixing force at the position of winding up the lever 8 is released.

Each part which comprises the clutch operating mechanism 5 is demonstrated in more detail.

It is placed in the motor case 13 at the distal end portion of the rotational force applying portion 25b which extends to the opposite side of one side of the line around the point portion 25a of the tooth gear 25 serving as the clutch conversion member. The other end of the spring member 39 made of a shape memory alloy having one end fixed to the pin 38 is fixed.

The preliminary wheel 25 is provided with the rotational force which rotates to the opposite direction (direction of arrow A in FIG. 4) by rotation of the AC motor 1 by the biasing force of the spring member 39. As shown in FIG. However, since the rotational torque of the induction rotating body 16 which follows the rotor 11 of the AC motor 1 exceeds the driving torque of the spring member 39, the induction rotating body 16 is the rotor 11. Is rotated in the opposite direction to the arrow A direction described above in response to the spring force of the spring member 39. In addition, in the vicinity of the spring member 39, a heat generating member (not shown) for generating heat in synchronization with the energization of the AC motor 1 is disposed.

The spring member 39 is a shape memory alloy configured to decrease the spring constant by weakening the spring constant by raising the temperature of the spring member 39 due to the heat generation of the heat generating member. Accordingly, when the AC motor 1 is energized and the rotation of the rotor 11 is transmitted to the induction rotating body 16 using magnetic induction, the bias force of the spring member 39 is rotated. Weakens. For this reason, when the torsion wheel 25 is rotated against the force of the spring member 39, the force of the spring member 39 causes the driving of the sun gear 25 to use the magnetic induction force with a light force. Therefore, the tooth difference 25 can rotate smoothly and surely. As a result, the switching operation from the disconnection of the first clutch means to the joint becomes assured.

On the other hand, when converting the first clutch means from the joint to the break, the energization of the AC motor 1 is cut off as described above. Accordingly, the heat generating member synchronized with the AC motor 1 stops heating. For this reason, the temperature of the spring member 39 falls, and the biasing force of the spring member 39 returns to the original. Therefore, the prechamber 25 is rotated by the maximum force of the spring member 39, and the conversion operation from the joint to the disconnection of the first clutch means is assured. In this embodiment, the spring member 39 made of the shape memory alloy is used as the biasing member. However, any other means may be used as long as the biasing force is changed depending on the rotational direction of the clutch converting member.

In addition, although the above-described embodiment is a suitable embodiment of the present invention, various modifications are possible without departing from the gist of the present invention. For example, as described above, in the present embodiment, the ring magnet 11c is directly bonded and fixed to the inner circumferential surface of the rotor magnet 11b, and the nonmagnetic conductive ring 16a is provided in the radially inner side of the ring magnet 11c. The configuration was arranged. However, as shown in FIG. 6, the ring-shaped magnet 16c is spaced apart from the rotor magnet 11b in the radially inward direction, and the nonmagnetic conductive ring 16a is disposed in this separation portion (see G in FIG. 6). You may also In this way, the magnets 11b and 11c are separated from each other so that the magnetic forces do not affect each other. Therefore, in the above-described embodiment, the magnetization width is configured in the circumferential direction of the ring magnet 11c and the rotor magnet 11b. However, the magnetization width does not have to be particularly adjusted.

In the above-described embodiment, since the rotor magnet 11b and the ring-shaped magnet 11c for magnetic induction have different shapes, for example, when the rotor magnet 11b is used for an application in which the motor torque does not need to be increased as much as that of the rotor magnet 11b. The device can be made compact by reducing the size.

In the above-described embodiment, the rotor magnet 11b and the ring magnet 11c are fixed by adhesion. However, as illustrated in FIG. 7, a plurality of protrusions 51 are disposed at the upper end of the outer periphery of the ring-shaped magnet 11c, and a plurality of bosses 52 are formed at the upper end of the rotor magnet 11b in the hole formed in the protrusion 51. The two magnets 11b and 11c may be fixed by performing thermal caulking after inserting the.

In the above-described embodiment, the concave portion 11m and the convex portion 11n are used when the rotor magnet 11b and the ring-shaped magnet 11c are fitted and bonded together at the same time. However, instead of using the fitting between the concave portion 11m and the convex portion 11n, the magnets 11b and 11c may be fixed while positioning with a jig, and adhesive fixing may be performed in that state.

In the above-described embodiment, the rotor magnet 11b is composed of a ferrite magnet and the ring magnet 11c is formed of an Nd-iron-boron-based magnet, but the materials of the magnets 11b and 11c are not limited thereto. In addition, in the above-described embodiment, the back yoke ring 16b is disposed to increase the induction magnetic force, but may be eliminated. However, by using the Nd-Fe-B magnet for magnetic induction and arranging the back yoke ring 16b, the induction magnetic force can be further increased, and the clutch operation can be made sure.

In each of the embodiments described above, the clutch means uses a planetary gear mechanism, but it is not necessary to make such a configuration particularly. The present invention can be applied to an overall geared motor including a magnetic induction rotating means having a magnetic induction magnet configured in a different shape concentrically with a rotor magnet in a clutch operating mechanism that performs a step of the clutch means.

In each of the above-described embodiments, the rotation of the ring gear 33 is stopped and the sun gear 32 and the planetary gear support gear 34 are connected to each other, and the rotational force of the AC motor 1 is directed to the output gear 3a. It is configured to deliver. However, the rotation of the planetary gear support gear 34 may be stopped, the sun gear 32 and the ring gear 33 may be jointed, and the rotational force of the AC motor 1 may be transmitted to the output gear 3a side. .

In addition, in the above-described embodiment, the coil member of the coil-shaped spring member 39 of the shape memory alloy is directly biased to the precar wheel 25 serving as the clutch converting member, but the spring member 39 is indirectly through the other member. The precar 25 may be rotated in one direction. The spring member 39 may not be coiled but may be a leaf spring or another member such as rubber.

In addition, in the above-described embodiment, the heat generating member is disposed in the vicinity of the spring member 39 and the temperature of the spring member 39 is increased in synchronism with the energization of the AC motor 1. It is good also as a structure to make. Moreover, in order to quench the temperature which rose once, you may arrange | position a fan which starts at the timing which interrupts energization of the AC motor 1 in the vicinity of the spring member 39, or may be comprised so that it may be quenched by a Belche element. In addition, the spring member 39 and the member for heat generation may be disposed outside the case body 12 or a vent may be arranged near the spring member 39 of the case body 12 in order to accelerate the drop in temperature after heat generation.

As described above, the present invention has an output shaft connected to the rotor and rotationally driven, a clutch means for stepping the connection between the output shaft and the rotor, and a clutch operation mechanism for stepping the clutch means. The magnetically inductive magnet or nonmagnetic conductive member which rotates interlockingly and the other side which is harvested and rotated on one side by magnetic induction, and are configured to connect the clutch means by interlocking with the other rotating side. It arrange | positions concentrically with respect to the said rotor.

Therefore, as in the conventional magnetic induction type geared motor, there is no need to arrange the electromagnetic clutch part in which the permanent magnet and the induction ring are disposed in front of the speed increasing lubrication heat connected to the rotor, and the noise generated at the engagement of each gear is eliminated. It becomes possible to reduce. In addition, the number of lubrication parts can be suppressed and the space of the magnetic induction means can be reduced.

According to another aspect of the present invention, since the magnetic induction magnet is fixedly arranged concentrically with respect to the rotor separately from the rotor magnet, the entire apparatus is very compact, and the rotor magnet has the best (or minimum) characteristics for motor driving. At the same time, the magnet for magnetic induction can have the best characteristics for magnetically inducing a nonmagnetic conductive member. That is, the magnetic force of the magnet for magnetic induction can be strengthened irrespective of the characteristics of the rotor magnet, and the certainty of the operation of the clutch operating mechanism which performs the step of the clutch means can be improved, so that the coupling of the clutch means can be reliably performed.

According to another aspect of the present invention, a magnetically inductive ring-shaped magnet and a non-magnetic conductive member are attached to the first rotating body and the second rotating body to which the other is attached concentrically, and a viscous body is disposed therebetween. Because of this, the driving torque is assisted by the viscosity of the viscous body when the second rotating body is rotated by two seconds of magnetic induction. Therefore, the rotational torque of the second rotating body due to magnetic induction is reinforced, and the certainty of the operation of the clutch operating mechanism that performs the step of the clutch means can be improved, so that the joint operation of the clutch means can be reliably performed.

According to another embodiment of the present invention, when the clutch means is converted from break to a joint using magnetic induction force, the bias force of the biasing member is weakened. Therefore, the rotational force by the magnetic induction force is efficiently transmitted to the rotating body and the clutch means You can more clearly convert from breaks to joints. In addition, when the clutch means is changed from the joint to the disconnection, the biasing force of the biasing member is returned to its original state, thereby ensuring the certainty of this operation.

Claims (36)

A geared motor having an output shaft connected to a rotor and rotationally driven, a clutch means for stepping the connection between the output shaft and the rotor, and a clutch operating mechanism for stepping the clutch means, The clutch operating mechanism includes a magnetic induction magnet disposed concentrically on the rotor and interlocked with the rotor, and a non-magnetic conductive member disposed concentrically with the rotor and rotating together according to the magnetic induction of the magnetic induction magnet. Has, The clutch means is connected to the rotor through the magnetic induction magnet and the non-conductive member geared motor, characterized in that for converting the rotor and the output shaft into a joint. The method of claim 1, The clutch means is composed of a planetary gear support gear for supporting planetary gears, and a planetary gear mechanism comprising a sun gear and a ring gear meshing with the planetary gears, and using the rotation of the nonmagnetic conductive member. Geared motor, characterized in that for transmitting the rotation of the rotor to the output shaft through the other two gears by preventing the rotation of any one of the ring gear and the planetary gear support gear. The method of claim 2, The planetary gear supporting motor is connected to the output shaft side, and the planetary gear mechanism is used as a reduction mechanism. The method of claim 3, Between the rotor and the planetary gear mechanism serving as the first clutch means, a second clutch means for stairing the connection between the output shaft and the rotor is disposed, and the non-rotating means is rotated while the second clutch means is interrupted. One of the ring teeth or the sun gear is locked by using the rotation of the conductive member, and in this locked state, the other side of the ring teeth or the sun gear to be reversed by external load applied to the output shaft. Geared motor, characterized in that the reverse rotation prevention mechanism is arranged to lock the back. The method of claim 4, wherein The second clutch means is operated between the rotor, the rotor and the stepped clutch pinion by axially moving up and down, a spring member disposed between the rotor and the clutch pinion, between the planetary gear mechanism and the output shaft. The clutch pinion is lowered in response to the spring force of the spring member to connect the rotor and the clutch pinion at the same time as the gear is disposed, and the clutch pinion is operated in conjunction with the gear. Geared motor, characterized in that composed of a clutch lever to lift the pinion to the spring force of the spring member and to break the rotor and the clutch pinion. The method of claim 4, wherein The second clutch means is a geared motor, characterized in that when the gear disposed between the planetary gear mechanism and the output shaft by the external load imposed on the output shaft in reverse rotation, the second clutch means is coupled from the break according to the reverse rotation. The method of claim 4, wherein And an unlocking means for releasing the connection between the nonmagnetic conductive member and the ring gear or the solar gear when the motor stops driving and stops rotation of the nonmagnetic conductive member. Geared motor, characterized in that the output shaft is configured to be reverse rotation by the external load is released. The method of claim 1, The magnet is a geared motor, characterized in that formed separately from the rotor magnet for driving the rotor. The method of claim 8, The geared motor, characterized in that the magnet is fixed directly to the rotor magnet and to match the magnetization width in the circumferential direction of the two magnets, and at the same time different adjacent magnetic poles of the two magnets. The method of claim 8, The geared motor, characterized in that the magnet is spaced apart from the rotor magnet, and the nonmagnetic conductive member is disposed in the separation portion. The method of claim 8, The magnets of the rotor magnets are oriented in anisotropy and the sine wave magnetic flux is output from the rotor magnets to the stator part side opposite to the rotor magnets. Geared motor, characterized in that configured to output a square wave magnetic flux on the side. An output shaft connected to the rotor and rotationally driven, a clutch means for stepping the connection between the output shaft and the rotor, and a clutch operating mechanism for stepping the clutch means; The clutch operating mechanism includes a magnetic induction magnet disposed concentrically on the rotor and interlocked with the rotor, and a non-magnetic conductive member disposed concentrically with the rotor and rotating together according to the magnetic induction of the magnetic induction magnet. Has, The clutch means converts the rotor and the output shaft into a joint by interlocking with the rotor through the magnetic induction magnet and the nonmagnetic conductive member. The clutch operating mechanism includes a drive member driven by the rotor, and a transmission member receiving the driving force of the drive member through a viscous body and transmitting the driving force to the other side. The method of claim 12, The magnetic induction magnet is attached to the first rotating body having the drive member, and the nonmagnetic conductive member is attached to the second rotating body having the transfer member, and the second rotating body is attached to the first rotating body. A geared motor, comprising: a rotation bearing portion for supporting rotation of the gear; and a viscous body provided in the rotation bearing portion. The method of claim 12, A geared motor, wherein the viscous body is composed of grease. The method of claim 12, The clutch operating mechanism includes a clutch converting member for interlocking with the non-magnetic conductive member to change the stairs of the clutch means, and simultaneously rotating the clutch converting member to one side by using the magnetic induction force, thereby allowing the clutch means to rotate. The non-conductive member when converting the clutch means from a joint to a break by rotating the clutch converting member to another side without using the magnetic induction force when converting the non-conductive conductive member from a break to a joint Geared motor, characterized in that at a higher speed than the rotation speed of. The method of claim 15, The clutch converting member is biased in a direction of converting the clutch means from a joint to a break and at the same time the nonmagnetic conductive member is opposed to a bias force received from the clutch converting member and in a direction of converting the clutch means from a break to a joint. Geared motor, characterized in that rotated by the magnetic induction force. A clutch operating mechanism having an output shaft connected to the rotor and rotationally driven, a clutch means for stairing the connection between the output shaft and the rotor, and a clutch converting member for converting the stairs of the clutch means; The clutch operating mechanism includes a magnetic induction magnet disposed concentrically on the rotor and interlocked with the rotor, and a non-magnetic conductive member disposed concentrically with the rotor and rotating together according to the magnetic induction of the magnetic induction magnet. Has, The clutch operating mechanism is configured to convert the clutch means into a joint by interlocking the clutch converting member with the non-magnetic conductive member that rotates together, and simultaneously biases the clutch converting member in a direction of converting the clutch means into disconnection. A biasing member is provided, and when the non-magnetic conductive member converts the clutch means into a joint by harvesting rotation against the biasing force of the biasing member with respect to the magnet for induction by using magnetic induction, the biasing force of the biasing member is increased. Geared motor, characterized in that configured to be weaker than the bias force when converting the clutch means to break. The method of claim 17, The biasing member is a geared motor, characterized in that formed by the shape memory alloy to return to the original biasing force is weakened when the heat applied to the biased force. A geared motor having an output shaft connected to a rotor and rotationally driven, a clutch means for stepping the connection between the output shaft and the rotor, and a clutch operating mechanism for stepping the clutch means, The clutch operating mechanism is a non-magnetic conductive member which is disposed concentrically on the rotor and co-rotates with the rotor, and is also arranged concentrically with respect to the rotor and magnetically induced to rotate together with magnetic induction according to the rotation of the non-magnetic conductive member. Has a magnet for The clutch means is connected to the rotor through the non-magnetic conductive member and the magnetic induction magnet geared motor, characterized in that for converting the rotor and the output shaft into a joint. The method of claim 19, The clutch means is composed of a planetary gear support gear for supporting planetary gears, and a planetary gear mechanism consisting of a sun gear and a ring gear meshing with the planetary gear, and using the rotation of the magnetic induction magnet, Geared motor, characterized in that for transmitting the rotation of the rotor to the output shaft through the other two gears by preventing the rotation of any one of the ring gear and the planetary gear support gear. The method of claim 20, The planetary gear supporting motor is connected to the output shaft side, and the planetary gear mechanism is used as a reduction mechanism. The method of claim 21, Between the rotor and the planetary gear mechanism serving as the first clutch means, a second clutch means for stairing the connection between the output shaft and the rotor is disposed, and the magnet is rotated while the second clutch means is disconnected. One of the ring gear or the sun gear is locked by using the rotation of the induction magnet, and in this locked state, the other side of the ring gear or the sun gear to be reversed by external load applied to the output shaft. Geared motor, characterized in that the reverse rotation prevention mechanism is arranged to lock the back. The method of claim 22, The second clutch means is operated between the rotor, the rotor and the stepped clutch pinion by axially moving up and down, a spring member disposed between the rotor and the clutch pinion, between the planetary gear mechanism and the output shaft. The clutch pinion is lowered in response to the spring force of the spring member to connect the rotor and the clutch pinion at the same time as the gear is disposed, and the clutch pinion is operated in conjunction with the gear. Geared motor, characterized in that composed of a clutch lever to lift the pinion to the spring force of the spring member and to break the rotor and the clutch pinion. The method of claim 22, The second clutch means is a geared motor, characterized in that when the gear disposed between the planetary gear mechanism and the output shaft by the external load imposed on the output shaft in reverse rotation, the second clutch means is coupled from the break according to the reverse rotation. The method of claim 22, And a lock release means for releasing the connection between the magnet for induction magnet and the ring tooth or the sun gear when stopping the driving of the motor to stop the rotation of the magnet for induction magnetism. Geared motor, characterized in that the output shaft is configured to be reverse rotation by the external load is released. The method of claim 19, The magnet is a geared motor, characterized in that formed separately from the rotor magnet for driving the rotor. The method of claim 26, The geared motor, characterized in that the magnet is fixed directly to the rotor magnet and to match the magnetization width in the circumferential direction of the two magnets, and at the same time different adjacent magnetic poles of the two magnets. The method of claim 26, The geared motor, characterized in that the magnet is spaced apart from the rotor magnet, and the nonmagnetic conductive member is disposed in the separation portion. The method of claim 26, The magnets of the rotor magnets are oriented in anisotropy and the sine wave magnetic flux is output from the rotor magnets to the stator part side opposite to the rotor magnets. Geared motor, characterized in that configured to output a square wave magnetic flux on the side. An output shaft connected to the rotor and rotationally driven, a clutch means for stepping the connection between the output shaft and the rotor, and a clutch operating mechanism for stepping the clutch means; The clutch operating mechanism is a non-magnetic conductive member which is disposed concentrically on the rotor and co-rotates with the rotor, and is also arranged concentrically with respect to the rotor and magnetically induced to rotate together with magnetic induction according to the rotation of the non-magnetic conductive member. Has a magnet for The clutch means is interlocked with the rotor through the non-magnetic conductive member and the magnetic induction magnet to convert the rotor and the output shaft into a joint, The clutch operating mechanism includes a drive member driven by the rotor, and a transmission member receiving the driving force of the drive member through a viscous body and transmitting the driving force to the other side. The method of claim 30, The nonmagnetic conductive member is attached to the first rotating body including the driving member, and the magnetic induction magnet is attached to the second rotating body including the transfer member, and the second rotating body is attached to the first rotating body. A geared motor, comprising: a rotation bearing portion for supporting rotation of the gear; and a viscous body provided in the rotation bearing portion. The method of claim 30, A geared motor, wherein the viscous body is composed of grease. The method of claim 30, The clutch operating mechanism includes a clutch converting member for interlocking with the magnetic induction magnet and converting the stairs of the clutch means, and simultaneously rotating the clutch converting member to one side by using the magnetic inducing force to perform the clutch. When converting the means from the break to the joint, the magnetic speed of the magnetic induction magnet is rotated to the other side without using the magnetic induction force so as to convert the clutch means from the joint to the stop. Geared motor, characterized in that at a higher speed than the rotation speed of the magnet. The method of claim 33, The clutch converting member is biased in a direction for converting the clutch means from a joint to a break and at the same time the magnetic induction magnet is opposed to a bias force received from the clutch converting member and converts the clutch means from a break to a joint. Geared motor, characterized in that rotated by the magnetic induction force. A clutch operating mechanism having an output shaft connected to the rotor and rotationally driven, a clutch means for stairing the connection between the output shaft and the rotor, and a clutch converting member for converting the stairs of the clutch means; The clutch operating mechanism is arranged in a concentric manner on the rotor and a non-magnetic conductive member which is interlocked with the rotor, and also arranged concentrically with respect to the rotor for magnetic induction to rotate together in accordance with the magnetic induction according to the rotation of the non-magnetic conductive member. Has a magnet, The clutch operating mechanism is configured to convert the clutch means into a joint by interlocking the clutch converting member with the magnetic induction magnet that rotates together, and simultaneously biases the clutch converting member in the direction of converting the clutch means into break. A biasing member of the biasing member when the magnet for induction magnet is rotated against the biasing force of the biasing member with respect to the nonmagnetic conductive member by using magnetic induction to convert the clutch means into a joint. Geared motor, characterized in that configured to be weaker than the bias force when converting the clutch means to break. The method of claim 35, wherein The biasing member is a geared motor, characterized in that formed by the shape memory alloy to return to the original biasing force is weakened when the heat applied to the biased force.