CN1224155C - Gearing motor - Google Patents

Abstract

A geared motor is provided with an output shaft connected to a rotor, a clutch means connecting or disconnecting the connection between the output shaft and the rotor, and a clutch manipulation mechanism engaging or disengaging the clutch means. The clutch manipulation mechanism is provided with any one of a ring type magnet or a non-magnetic conductive ring for magnetic induction which is coupled for rotation with the rotor and the other which also rotates following the one due to the magnetic induction, the clutch means being in conjunction with the other. A rotation support section which supports the rotation of the second rotor fitted with the other, is disposed on the first rotor (the relative rotor) fitted with the one, and a viscous body is provided on the rotation support section. The present invention can strengthen the magnetic induction force, to reliably turn a clutch on or off.

Description

Gearmotor

Technical field

The present invention relates generally to the improvement of gearmotor, with the driving mechanism of doing the draining valve of washing machine or the protective door of ventilation fan etc. are driven.

Background technology

Became the gearmotor of the drive sources such as protective door of the draining valve of washing machine or ventilation fan in the past, its structure is, promote load member (steel wire rope or control lever etc.) by motor driven, keep load member in this raised position stipulated time, and can turn back to original position from this hold mode member of will loading.Such gearmotor has clutch between the output shaft of motor rotor that becomes drive source and connected load member.And, carry out above-mentioned lifting and maintenance connecting under the state of this clutch, by cut-off clutch, just can utilize the load forces of load member and make the load member turn back to original position.

In addition, as above-mentioned clutch, proposed to utilize the clutch (with reference to Japanese patent laid-open 3-198638 number) of magnetic induction way.In this device, make in the deceleration train that will connect between rotor and output shaft that permanent magnet is relative with sensor component to be disposed, the action that sensor component makes utilization rotate with permanent magnet because of magnetic induction is carried out the operating sheet that clutch switches and is moved.

Above-mentioned spy drives the gearmotor of flat 3-198638 number record, the place ahead in the speedup train that connects with rotor is provided with the electromagnetic clutch portion that makes the relative configuration with inductance loop of permanent magnet, and the noise that is produced when each gear meshing just becomes problem thus.In addition, in train,, also become the structure that is unfavorable for omitting the aspect, space for constituting electromagnetic clutch portion.

And on the other hand, also having following such problem: magnetic-inductive device is for to utilize magnetic strength stress that clutch is connected, disconnected under contactless state, and this magnetic strength stress is restricted, and can not fully make the clutch operating mechanism action.Though as long as this problem constitute with powerful magnet or sensor component just can solve, can produce maximization of device integral body or the material cost problem such as format at high price that makes.

Summary of the invention

In view of the above problems, the objective of the invention is to, a kind of gearmotor is provided, it can make the magnetic-inductive device save space, suppresses train part number and can reduce the noise that is produced when gears engaged such as promoting when driving.

Another purpose is, a kind of gearmotor is provided, and it does not make magnet or sensor component maximize just can strengthen magnetic strength stress, can connect reliably, disconnect clutch thus.

For realizing this purpose, the invention provides a kind of gearmotor, have: be connected the also output shaft of rotatable driving with rotor; To the clutch apparatus that this output shaft and being connected of rotor connecting, disconnects, clutch apparatus has the planetary gears that constitutes by the planetary gear supporting gear of planetary gear bearing, with the central gear and the rim gear wheel of planetary gear engagement; To this clutch apparatus connect, the clutch operating mechanism of opening operation, clutch operating mechanism has: to the connection of clutch apparatus, disconnect the clutch switching member that switches; In magnet of using with the magnetic induction of rotor interlock rotation and the non magnetic conductive member one; Utilize magnetic induction and follow the magnet of a rotation in magnet and the non magnetic conductive member and in the non magnetic conductive member another, another interlock in clutch operating mechanism and the magnet of following rotation and the non magnetic conductive member and be connected clutch apparatus, and magnet is provided on the concentric circles of relative rotor with non magnetic conductive member, with another interlock in magnet of following rotation and the non magnetic conductive member be, utilize the clutch switching member to stop central gear, any one rotation in rim gear wheel and the planetary gear supporting gear, and the rotation by other two gears with rotor passes to output shaft, when motor is connected, clutch connects, when motor disconnects, clutch separation.

Above-mentioned invention, clutch operating mechanism be provided in the rotor concentric circles on, therefore, need not gearmotor as existing magnetic induction way, the place ahead in the speedup train that connects with rotor is provided with the electromagnetic clutch portion that makes the relative configuration with inductance loop of permanent magnet, the noise that is produced in the time of just can being reduced in each gear meshing.In addition, can suppress train part number and make the magnetic-inductive device save spaceization.

In addition, except that above-mentioned invention, the clutch apparatus of other inventions is made of planetary gears, this planetary gear comprise planetary gear bearing the planetary gear supporting gear, with the central gear and the rim gear wheel of planetary gear engagement, by the rotation that utilizes the opposing party stop in central gear, rim gear wheel and the planetary gear supporting gear any one the rotation, thereby by other two gears the rotation of rotor is passed to output shaft.

Therefore, clutch apparatus can be contained in the train compactly, make the train integral miniaturization that disposes between rotor and the output shaft, can make the device integral miniaturization thereupon.

In addition, other inventions are, except that above-mentioned invention, the planetary gear supporting gear are connected to the output shaft side, and planetary gears is used as reducing gear.Therefore, planetary gears has both as the function of clutch with as the function of reducing gear, and train integral body becomes compact structure.

In addition, other inventions are, except above-mentioned invention, at rotor and become between the planetary gears of the 1st clutch apparatus, be provided with the 2nd clutch apparatus that output shaft and being connected of rotor are connected, disconnect, under disconnecting the state of the 2nd clutch apparatus, by making the rotor rotation utilize the opposing party's rotation to come in locking ring gear or the central gear either party, and be provided with under this lock-out state, desiring the reversing that the opposing party of the rim gear wheel of contrary rotation or central gear locks again and prevent locking mechanism because of acting on external load on the output shaft.That is, make rim gear wheel or central gear both sides locking simultaneously by using other device separately, thereby stop the contrary rotation that external load produced of output shaft, and can keep reliably in raised position.

In addition, other inventions are that except that above-mentioned invention, the 2nd clutch apparatus comprises: rotor; By the clutch pinion that can be connected, disconnect with rotor to axial knee-action; Be configured in the spring member between rotor and the clutch pinion; And clutch control lever, itself and be configured in planetary gears and output shaft between gear interlock and move, and the elastic force that overcomes spring member with this action descends clutch pinion, thereby rotor is connected with clutch pinion, simultaneously by relying on the elastic force of spring member that clutch pinion is risen, thereby make rotor and clutch pinion disconnection with gear interlock action.So, because by making vertically the clutch pinion of knee-action make knee-action with the clutch control lever that is independent of train, and become this simple structure that the 2nd clutch apparatus is connected, disconnects, so make assembling become good.

In addition, other inventions are, except that above-mentioned invention, the 2nd clutch apparatus when being configured in gear between planetary gears and the output shaft when acting on the contrary rotation of external load on the output shaft, becomes connection along with this contrary rotation from disconnection.So, the 2nd clutch apparatus owing to need not to move especially the power supply that switches usefulness, just becomes connection status along with the contrary rotation of gear, so can avoid the complicated of device, helps the miniaturization of device.

In addition, other inventions are, except that above-mentioned invention, also have stop drive motor, when stopping the rotation of magnetic induction rotary body with the latch-release device of being removed this magnetic induction rotary body and being connected of rim gear wheel or central gear, remove this connection by this latch-release device, and utilize external load and make the contrary rotation of output shaft.So, owing to make the contrary rotation of output shaft by only stopping drive motor by external load, therefore, available simple structure turns back to the release position with output shaft from the holding position.

In addition, other inventions are that except that above-mentioned invention, magnet forms with the rotor magnet split that drives described rotor.Therefore, rotor magnet can have (or MIN) characteristic of the best of using as motor driven, and the magnet used of magnetic induction can have the characteristic of non magnetic conductive member being carried out the best that magnetic induction uses.

That is to say, be the structure of magnetic induction magnet though also considered to make the rotor magnet dual-purpose, under these circumstances, needs to strengthen magnetic strength stress and improve the torque that magnetic induction produces, the action that clutch is connected, disconnects reliably.In this occasion, when only strengthening the magnetic force of rotor magnet, exist the danger of the unfavorable condition that for example produces mal-operation etc.If adopt above-mentioned invention, then because other body forms magnetic induction with magnet and rotor magnet, so can use best separately magnet to constitute two magnet according to its purposes.Therefore, strengthen magnetic strength stress even the magnetic force of magnet is made brute force, it does not influence motor characteristic yet.Thus, the action that clutch operating mechanism connects, disconnects clutch apparatus can be improved reliably, the connection of clutch apparatus can be carried out reliably.

In addition, other inventions are, except that above-mentioned invention, magnet directly is fixed on the rotor magnet, and make two magnet to circumferential magnetization width unanimity, and it is different mutually to constitute the magnetic pole of adjacency of two magnet.Therefore, when further making the whole formation of device compact, more can not influence the other side's magnet from each magnetic flux of two magnet output.

In addition, other inventions are, except that above-mentioned invention, make magnet leave rotor magnet and dispose, and dispose non magnetic conductive member at this separating part.Therefore, further do not influence the other side's magnet reliably from each magnetic flux of two magnet output.

In addition, other inventions are, except that above-mentioned invention, the magnetization orientation of rotor magnet become the magnetic pole anisotropy and the magnetic flux of stator department side sine wave output, and the magnetization orientation of magnet become isotropism and magnetic flux from this magnet to non magnetic conductive member side output square wave from this rotor magnet to relative configuration with this rotor magnet.Therefore, rotor magnet further makes motor characteristic improve, and simultaneously, magnet is further brought into play magnetic strength stress.

In addition, another gearmotor of the present invention has: be connected the also output shaft of rotatable driving with rotor; To the clutch apparatus that this output shaft and being connected of rotor connecting, disconnects; To this clutch apparatus connect, the clutch operating mechanism of opening operation, clutch operating mechanism has: magnet of using with the magnetic induction of rotor interlock rotation or in the non magnetic conductive member either party; Utilize magnetic induction and follow the opposing party of this side rotation, be characterized in, also be provided with: drive member, it links with the opposing party who follows rotation and clutch apparatus switched to is connected, and by rotor driven; Transmission member, it bears the actuating force of this drive member and this actuating force is passed to the opposing party by viscoid.

Adopt above-mentioned invention, its structure is: connect magnet and the non magnetic conductive member that magnetic induction is used with viscoid, not only utilize magnetic strength stress, and utilize the viscosity of viscoid to follow the actuating force of rotor.That is the driving torque of utilizing the viscosity of viscoid to assist magnetic strength stress to be produced.Therefore, the rotating torques that magnetic induction produces is strengthened, and can improve the reliable in action that clutch operating mechanism connects, disconnects clutch apparatus, can carry out the connecting moves of clutch apparatus reliably.

In addition, other inventions are, except that above-mentioned invention, one side is installed on the 1st rotary body with drive member, the opposing party is installed on the 2nd rotary body with transmission member, the swivel bearing portion of supporting the 2nd rotary body rotation is set on the 1st rotary body, and in this swivel bearing portion, is provided with viscoid.So, rotary body by magnet is installed with one and the rotary body that non magnetic conductive member is installed constitute and have the member of magnetic strength stress being strengthened the viscoid of usefulness, thereby can reduce the part number, can do device integral body compact, in the time of can reducing the assembler.

In addition, other invention is except that above-mentioned invention, to constitute viscoid with lubricating grease.Therefore, by setting the viscosity of lubricating grease, can be only when high speed rotating performance viscosity with assist torque etc., freely set the torque auxiliary force of magnetic strength stress.

In addition, other invention is, except that above-mentioned invention, clutch operating mechanism has the clutch switching member, itself and the opposing party rotation that links, simultaneously to the connection of clutch apparatus, disconnect and switching, will utilize magnetic strength stress and make this clutch switching member to the rotary speed that a side rotate, clutch apparatus switches to the opposing party when connecting from disconnection be provided with make than not utilizing magnetic induction power the clutch switching member to the opposing party rotate, clutch apparatus the opposing party's when connection switches to disconnection rotary speed high speed also.

Adopt above-mentioned invention, its structure is: utilize magnetic strength stress that clutch apparatus is become at a high speed from the rotary speed that disconnection switches to the opposing party when connecting.Therefore, utilizing magnetic strength stress clutch is switched to when connecting, viscoid is because of the torque auxiliary part generation effect of high speed rotating as magnetic strength stress.On the contrary, from become to the rightabout rotation of rotation that utilizes magnetic strength stress be connected to the rotation that disconnects the time, torque does not take place in viscoid, as common lubricant generation effect, the 2nd rotary body is successfully done rotation relatively with regard to relative the 1st rotary body.Therefore, can be according to its direction of rotation and the action of switch clutch switching member successfully.

In addition, other inventions are, except that above-mentioned invention, the characteristics of clutch switching member are, to carrying out switching to the direction of action of disconnection to the clutch apparatus application of force from connection, the opposing party overcomes the application of force that is subjected to by the clutch switching member, and utilizes described magnetic strength stress to make clutch apparatus to the direction rotation that switches to connection from disconnection.Owing to make structure like this, reliably clutch apparatus switched to disconnection from connection so can utilize the application of force.And, such as mentioned above, doing when disconnecting, because it is auxiliary to obtain the torque that viscoid produces to the action that connects, so also become reliably, from being disconnected to connection and all becoming reliable from the two action both sides that are connected to disconnection from disconnecting to the change action that connects.

In addition, another gearmotor of the present invention is characterized in having: be connected the also output shaft of rotatable driving with rotor; To the clutch apparatus that this output shaft and being connected of rotor connecting, disconnects; Have the clutch operating mechanism that this clutch apparatus is connected, disconnects the clutch switching member of switching, clutch operating mechanism has: magnet of using with the magnetic induction of rotor interlock rotation or in the non magnetic conductive member either party; Utilize magnetic induction and follow the opposing party of this side rotation, and has a force application component, it switches to clutch apparatus with the opposing party interlock of following rotation by the clutch switching member and is connected, while is carried out the application of force to the direction that clutch apparatus switches to disconnection to the clutch switching member, the application of force of utilizing magnetic induction to overcome force application component by the opposing party is followed side rotation, and the application of force that makes clutch apparatus switch to the force application component when connecting is weaker than clutch apparatus and switches to the application of force when disconnecting.

Adopt above-mentioned invention, when disconnection switches to connection, the application of force of force application component is died down at clutch apparatus owing to utilize magnetic strength stress, so the revolving force that magnetic strength stress is produced is passed to rotary body expeditiously, can more reliably clutch apparatus be switched to connection from disconnection.And, in that clutch apparatus is switched to when disconnecting from connection, because the application of force of force application component becomes original state, so the reliability of this action also can be guaranteed.

In addition, other inventions are, except that above-mentioned invention, force application component, when increasing with heat the application of force with regard to die down, heat reverts to the marmem of the original application of force when reducing and forms.Therefore, the characteristic that can simpler structure realizes above-mentioned force application component.

Description of drawings

Fig. 1 is the expansion longitudinal section of internal mechanism that is used for illustrating the gearmotor of the invention process form.

Fig. 2 is the cutaway view that expression is equipped with induction rotary body magnet, that rotor and non magnetic conductive member are installed that the magnetic induction that becomes Fig. 1 gearmotor major part uses.

Fig. 3 sees vertical view behind Fig. 2 from arrow III direction.

Fig. 4 is used for illustrating the magnetized separately ideograph of magnet that rotor magnet and magnetic induction are used.

Fig. 5 is the vertical view that unloads state after lid and the case top lid from Fig. 1 gearmotor.

Fig. 6 is the cutaway view that expression is equipped with induction rotary body magnet, that rotor and non magnetic conductive member are installed that the magnetic induction that becomes the gearmotor major part of the invention process model deformation example uses.

Fig. 7 is the cutaway view that expression is equipped with induction rotary body magnet, that rotor and non magnetic conductive member are installed that the magnetic induction that becomes the gearmotor major part of another variation of the invention process form uses.

Embodiment

Below, the example of the example of gearmotor of the present invention is described according to Fig. 1 to Fig. 5.

The gearmotor of example of the present invention has as shown in Figure 1: the AC motor 1 that becomes drive source; Be connected and rotated the output shaft 3 of driving by drive train 2 with the rotor 11 of AC motor 1; The planetary gears that becomes the 1st clutch apparatus 22 of doing disconnection, connecting that is connected to output shaft 3 and rotor 11; To the 1st clutch apparatus connect, the clutch operating mechanism 5 of opening operation; To the 2nd clutch apparatus 4 that output shaft 3 and being connected of rotor 11 connecting, disconnects; The clutch control lever 41 that the 2nd clutch apparatus 4 is connected, disconnects.And these each mechanisms are contained in the housing 12 that is made of enclosure body 12a and case top lid 12b.

This gearmotor, by the 2nd clutch apparatus 4 being set as connection (meaning of connection equals to connect ON), thereby the actuating force of AC motor 1 is delivered to output shaft 3 sides, be pressed into 7 rotations of the sliding pinion that is fixed on output shaft 3 front ends by making, thereby effect there is the bar 8 of given load with regard to towing.And, by the 2nd above-mentioned clutch apparatus 4 is set as disconnection (meaning of disconnection equals to cut off OFF) with the disconnection that is connected between rotor 11 and the output shaft 3, and become relative rotor 11 freely that clutch pinion 21 usefulness clutch control levers 41 are locked, thereby stop the each several part of drive train 2 to rotate to reverse (with the rightabout meaning of lifting arm 8), the position after bar 8 is risen to assigned position keeps bar 8.In addition, this state all forms by keeping to 1 energising of AC motor.In addition, because by stopping again from this state, thereby make the 1st clutch apparatus become off-state, remove the confining force that keeps bar 8 usefulness, promote preceding position so bar 8 turned back to along with the load that acts on bar 8 self to AC motor 1 energising.

Below, describe the structure that is used for realizing its action in detail.

Bottom surface side in enclosure body 12a disposes the AC motor 1 that becomes drive source that makes bar 8 action usefulness.AC motor 1 has: be configured in the stator department 14 in the motor field frame 13 that forms cup-shaped; At the interior week of this stator department 14 and the rotor 11 of stator department 14 relative configurations; The armature spindle 15 of this rotor 11 is supported in rotation freely.

Below, rotor 11 is described and is configured in the induction rotary body 16 of rotor 11 inboards with Fig. 2 and Fig. 3.

As shown in Figure 2, rotor 11 has: the 11a of swivel bearing portion, and it has the hole that connects insertion armature spindle 15 (with reference to Fig. 1); The rotor magnet 11b of ring-type roughly, its upper end side is fixed into outstanding upward at the outer circumferential side of the 11a of this swivel bearing portion.This rotor magnet 11b is made of ferrite magnet.And,, embed the useful ringshaped magnet 11c that magnetic force neodymium-iron-boron (Nd-Fe-B) the magnetic induction that based magnet constituted also more powerful than the magnetic force of this rotor magnet 11b is used that has at the inner peripheral surface of this rotor magnet 11b.The axial end portion of this ringshaped magnet 11c and the flange part 11a1 butt that is formed on the 11a of swivel bearing portion.Thus, ringshaped magnet 11c is positioned vertically.

So, ringshaped magnet 11c directly is adhesively fixed on the becoming on the inside part on the concentric circles of rotor magnet 11b that other body constitutes, constitutes and the rotation of rotor magnet 11b one.In more detail, as shown in Figure 3, at the inner peripheral surface of rotor magnet 11b, equally spaced form 4 little recess 11m, while make 4 little protuberance 11n that are formed at ringshaped magnet 11c outer peripheral face aim at these 4 recess 11m, ringshaped magnet 11c is embedded rotor magnet 11b vertically.

In addition, at the inner peripheral surface of rotor magnet 11b, be coated with thermosetting bonding agent in advance.And two magnet 11b, 11c is heated and above-mentioned bonding agent produces sclerosis, integrated in this position.

In addition, in this example, ringshaped magnet 11c is embedded rotor magnet 11b, but also can on the contrary rotor magnet 11b be embedded ringshaped magnet 11c.

In addition, as shown in Figure 4, above-mentioned rotor 11 after like that integrated, constitute make two magnet 11b, 11c to circumferential magnetization width unanimity, and make the magnetic pole of adjacency different mutually.And the rotor magnet 11b that is configured in outer circumferential side is oriented to magnetic pole anisotropy (with reference to the dotted line among Fig. 4).Therefore, this rotor magnet 11b constitutes, with stator department 14 (with reference to Fig. 1) side of the relative configuration in the outside of this rotor magnet 11b, connect the magnetic flux that is configured in the also strong sine wave of inboard ringshaped magnet 11c side near the output.Its result, rotor magnet 11b can not abutted against the effect of magnetic influence of inboard ringshaped magnet 11c and effectively magnetic flux outputed to stator department 14 sides, can bring into play the drive characteristic of AC motor 1.

On the other hand, the ringshaped magnet 11c that is configured in rotor magnet 11b inboard is oriented to isotropism (with reference to arrow x, the y among Fig. 4).Therefore, with the non magnetic conductive member of the inboard relative configuration of this ringshaped magnet 11c (below be called non magnetic conducting ring) 16a (with reference to Fig. 2) side, connect the magnetic flux that is configured in the also strong square wave of outside rotor magnet 11b side near the output.Therefore, ringshaped magnet 11c can not abutted against the effect of magnetic influence of outside rotor magnet 11b and effectively magnetic flux be outputed to non magnetic conducting ring 16a side, can make magnetic strength stress stronger.

As mentioned above, the present invention is by with ringshaped magnet 11c and rotor magnet 11b body formation in addition, thereby available two magnet 11b, 11c make the character of each magnet, specifically make magnetic force or direction of magnetization difference.Therefore, can not consider influence, and use the bigger magnet of magnetic force that ringshaped magnet 11c is strengthened magnetic strength stress, be used for following the non magnetic conducting ring 16a of rotation rotor magnet 11b.Thus, raising is by the reliability of the action of the induction rotary body 16 of the magnetic induction masterpiece spinning movement of ringshaped magnet 11c.Its result improves the reliability of the action of the clutch operating mechanism 5 that is described in detail in the back.

In addition, irrelevant with ringshaped magnet 11c, for the rotor magnet 11b of stator department 14 relative configurations, for driving AC motor 1 can use the inexpensive magnet with bottom line function, or opposite, use magnet for improving motor characteristic with best-of-breed functionality.

As shown in Figure 2, in the inside of above-mentioned ringshaped magnet 11c, the non magnetic conducting ring 16a and back-yoke ring (the バ ッ Network ヨ one Network リ Application グ) 16b of relative configuration with this ringshaped magnet 11c is installed and rotates the induction rotary body 16 that configuration freely has pinion part 16d.In addition, this induction rotary body 16 is, when ringshaped magnet 11c rotates by the rotation of rotor 11, rotate by the rotation that utilizes magnetic induction to make non magnetic conducting ring 16a follow this ringshaped magnet 11c, thereby these induction rotary body 16 integral body are followed rotor 11 rotations integratedly.In addition, ringshaped magnet 11c and non magnetic conducting ring 16a become the drive source portion that makes the clutch operating mechanism 5 action usefulness that describe in detail later, the pinion part 16d of induction rotary body 16 and elevating arc described later 25 engagements.For the structure of induction rotary body 16, describe in detail in the back.

Upper part at the 11a of swivel bearing portion of rotor 11 is formed with pawl 11d.This pawl 11d engages with pawl 21d, and this pawl 21d constitutes the part of drive train 2 as described later and be formed on the lower end of the clutch pinion 21 that becomes the 2nd clutch apparatus 4 parts, passes to clutch pinion 21 with the revolving force with rotor 11.And the revolving force of these pawls 11d, 21d engaging, rotor 11 is passed to output shaft 3 sides by clutch pinion 21 state is set as the state of connection by the 2nd clutch apparatus 4.On the other hand, with these pawls 11d, 21d be the revolving force of non-engaging, rotor 11 is not set as disconnection by state from the 2nd clutch apparatus 4 to the state of output shaft 3 side transmission.That is, make the pawl 11d of the upper end of rotor 11 become the 2nd clutch apparatus 4 with the pawl 21d of the lower end of clutch pinion 21, the mechanism that this described two pawl 11d, 21d engage, break away from.

As shown in Figure 2, all side parts in the upper end of the 11a of swivel bearing portion, be formed with the groove 11f that is used for embedding the compression helical spring 18 that becomes the 2nd clutch apparatus 4 parts, and the 2nd clutch apparatus 4 makes rotor 11 engage, break away from usefulness with clutch pinion 21.In addition, become near the outer peripheral face of the part upper end of the 11a of swivel bearing portion of rotor 11 of the 1st rotary body, become the 11g of radial bearing portion that the pinion part 16d inner peripheral surface as the induction rotary body 16 of the 2nd rotary body is supported.In addition, near the outer circumferential side part the lower end of the 11a of swivel bearing portion is provided with the 11e of thrust bearing portion, and it supports the cylindrical portion 16c end portion of induction rotary body 16 and the bearing radially of double as induction rotary body 16 vertically.And, be formed at the described two bearings 11e of portion, 11g on the rotor 11 that becomes the 1st rotary body, become the swivel bearing portion of being supported to as the rotation of the induction rotary body 16 of the 2nd rotary body.

On 11g of radial bearing portion that becomes swivel bearing portion and the 11e of thrust bearing portion, has viscoid, specifically has lubricating grease (coated portion of representing lubricating grease with symbol G), it becomes the rotation lubricant of induction rotary body 16, and is used for the induction rotating torques of auxiliary induction rotary body 16 when following rotor 11 rotation.In addition, this lubricating grease preferably is difficult to produce the viscosity change of bringing because of variations in temperature, for example, uses the lubricating grease of poly alpha olefin system etc.Rise though it is contemplated that the temperature of lubricating grease during at high speed rotating, because be that this moment will be to the cause that the auxiliary best inviscid variation of torque is carried out in rotation of following of induction rotary body 16 at rotor 11 and induction rotary body 16.

Gearmotor of the present invention, induction rotary body 16 because of magnetic induction follow rotor 11 rotation, will the 1st clutch apparatus described later (quite planetary gears 22) when disconnection switches to connection, the rotary speed of rotor 11 is very fast.Therefore, though induction rotary body 16 desires to follow this rotor 11 than the rotary speed of piece, its speed difference is very big, thereby both speed differences of 11,16 become bigger state.

On the other hand, disconnect after 1 energising of AC motor stops rotor 11, the elastic force of spiral helicine spring member 39 (with reference to Fig. 4) that becomes the marmem system of aftermentioned force application component by utilization rotates elevating arc 25 round about, induction rotary body 16 also with the action interlock and the rotation round about of elevating arc 25.The action of this moment is that the 2nd clutch apparatus is switched to disconnection from connection.At this moment, only respond to the rotor 11 of rotary body 16 relative halted states and rotate, but rotary speed itself is very slow.

In addition, the rotating torques of following because of induction rotary body 16 that above-mentioned lubricating grease produced can be represented by the formula.

M＝π ²×(d/c)×(L/d)×μ×n×d ³

(M: moment (driving torque), d: the diameter of axle, c: bearing clearance, L: bearing width, μ: viscosity, n: rotating speed)

So, the rotating torques of following because of induction rotary body 16 that lubricating grease produced becomes following relational expression: be directly proportional with rotating speed and viscosity etc., increase with 3 powers of the diameter of axle.

Therefore, lubricating grease functions as follows: when rotor 11 rotates with bigger the following of speed difference of induction rotary body 16, come the rotating torques of following rotation of the relative rotor 11 of auxiliary induction rotary body 16 by the viscosity of lubricating grease.Therefore, lubricating grease plays the rotating torques of following that magnetic induction is produced and does further auxiliary effect, plays the effect that the 1st clutch apparatus is switched to reliably connection from disconnection.On the other hand, when slower non-of rotary speed followed rotation, lubricating grease viscosity did not play following the effect that rotation is assisted, and the only effect of super fatting agent.Therefore, produce following effect: can not hinder the return action of spring member 39, and carry out reliably the 1st clutch apparatus from being connected to the switching of disconnection.

In addition, above-mentioned lubricating grease also can be non-cohesive the 11c of two bearings portion that constitutes swivel bearing portion, the both sides of 11g, and attached to either party.Structurally, if make the structure of only on the 11g of radial bearing portion, adhering to the lubricating grease that becomes viscoid, then have lubricating grease and be difficult to the effect of dispersing to the outside in the space of separating with the outside because of rotor 11 and induction rotary body 16.

In this example, be that dual-purpose is a lubricant though also lubricating grease is got poly alpha olefin, lubricating grease also can use the auxiliary special-purpose lubricating grease of torque, specifically, the silicone grease that the use hydraulic bjuffer is used etc.In addition, in this example, be to use the lubricating grease that is difficult to produce the viscosity change of bringing because of variations in temperature, but also can constitute: if use the lubricating grease of following variations in temperature and producing viscosity change on the contrary, then when starting, play the torque booster action, when the speed more than certain with certain begins to rotate, auxiliary with regard to not carrying out torque.

In addition, as shown in Figure 3, on the axial end of the rotor magnet 11b of rotor 11, along circumferentially being provided with 4 recess 11k equably.These recesses 11k under the situation of the contrary rotation of rotor 11 beginnings, embeds the projection 25c (with reference to Fig. 5) that is formed on the elevating arc 25 when starting, to stop its contrary rotation.Adopt this structure, rotor 11 can be modified to regular direction of rotation.

Induction rotary body 16 so constitutes: the non magnetic conducting ring 16a that constitutes by copper etc. in the configuration of its most peripheral, be pressed into back-yoke ring 16b by magnetic (specifically iron etc.) formation in the inboard of non magnetic conducting ring 16a, and insert shaping with resin.

Be configured in the non magnetic conducting ring 16a of induction rotary body 16 most peripherals of formation like this, with become the member of following ringshaped magnet 11c rotation as mentioned above, promptly have non magnetic, the non magnetic sensor component of conductivity, the member that is specifically formed by metals such as copper or aluminium constitutes.

Thus, utilize the magnetic strength stress of ringshaped magnet 11c and make the driven rotation of non magnetic conducting ring 16a and rotate in the same way with rotor 11.That is, above-mentioned ringshaped magnet 11c and inductance loop 16a become and utilize magnetic induction and make induction rotary body 16 relative rotors 11 make the magnetic induction whirligig of driven rotation usefulness, and induction rotary body 16 becomes and utilizes magnetic induction and follow the rotary body that rotor 11 rotates.

In addition, in this example, in rotor 11 sides that become magnetic induction whirligig one side ringshaped magnet 11c is installed, in induction rotary body 16 sides that become magnetic induction whirligig the opposing party non magnetic conducting ring 16a is installed, but also can disposes ringshaped magnet 11c and non magnetic conducting ring 16a on the contrary.

As mentioned above, the gearmotor of example of the present invention disposes the inductance loop 16a that becomes clutch operating mechanism 5 parts that utilizes magnetic strength stress coaxially in the interior circumferential portion of the rotor 11 of motor 1.Therefore, will not produce the train part that this magnetic strength stress uses is configured in the drive train 2 of following explanation especially.Therefore, owing to needn't increase the gear of drive train 2 especially, so can reduce the gear of the formation train noise that sound produced that rubs mutually.In addition, can enlarge the space of configuration driven train 2, can increase the design freedom of this part, and can omit this space on the contrary and obtain the miniaturization of device.

In addition, in this example, on the rotor 11 that becomes the 1st rotary body, be provided with bearing 11c, the 11g of the swivel bearing portion that becomes that the rotation of the non magnetic conductive member 16a that becomes the 2nd rotary body is supported, on this bearing 11c, 11g, be coated with viscoid (lubricating grease).That is, at the rotary body that the magnet 11c that magnetic induction uses directly is installed and directly be equipped with between the rotary body of non magnetic conductive member 16a, be provided with the viscoid that the driving torque of utilizing viscosity that magnetic strength stress is produced is assisted.

The viscoid of the auxiliary usefulness of this torque, so long as the position of the relative configuration of using with 2 magnetic induction of rotary body promptly is to have the position that specified gap ground disposes relatively between the two, then setting can on any position.For example, in the rotary body of in the rotary body that magnetic induction is used, using with (in this example quite ringshaped magnet 11c) of being configured in rotor-side another rotary body that is connected and magnetic induction with another rotary body that rotary body (quite non magnetic conductive member 16a in this example) that the rotary body of following rotor-side rotates is connected between, also configurable above-mentioned viscoid.

Below, illustrate that according to Fig. 1 and Fig. 5 actuating force with AC motor 1 passes to the drive train 2 of output shaft 3 and switches the clutch operating mechanism 5 of usefulness to being configured in the 1st clutch apparatus in this drive train 2.

Drive train 2 be located at the Fig. 1 that launches cutaway view the right side half, it comprises: clutch pinion 21; Planetary gears 22 with the bearing gear 32b that meshes with this clutch pinion 21; The transmission gear 23 of the revolving force of planetary gear bearing mechanism 22; Has output shaft 3 with the 3a of output gear portion that transmits gear 23 engagements.This drive train 2 becomes is slowed down and is passed to the deceleration train of output shaft 3 rotation of rotor 11.

Now further describe the each several part that constitutes drive train 2.Become drive train 2 the 1st grade gear clutch pinion 21 as mentioned above, with rotor 11 arranged coaxial.That is, clutch pinion 21 rotates freely sliding gomphosis on armature spindle 15, dispose relative with the upper surface of rotor 11 below it.In the lower surface of this clutch pinion 21, be formed with the pawl 11d that is formed at rotor 11 upper ends and engage, break away from freely pawl 21d.In addition, clutch pinion 21 is clamped compression helical spring 18 and is placed on the rotor 11, and the spring force that utilizes compression helical spring 18 is to the top of Fig. 1 application of force.

The cam surface 41a of clutch control lever 41 faces the upper part of this clutch pinion 21.Therefore, clutch pinion 21 utilize all the time compression helical spring 18 elastic force and by being pressed on the cam surface 41a.This cam surface 41a is made of with the part that becomes trough the 41c of the portion that pushes that becomes crest.One distolateral rotation of clutch control lever 41 is bearing on the axle that transmission gear 23 is supported freely.And another of clutch control lever 41 is distolateral, and a side that promptly has cam surface 41a is provided with slotted hole 41b (with reference to Fig. 5), and armature spindle 15 is embedded in this slotted hole 41b, only constitutes swing within the limits prescribed.

In addition, clutch control lever 41 has the operation projection 41e (with reference to Fig. 1) in the embeddeding clutch control lever operating groove 3b, and clutch control lever operating groove 3b is formed at the opposite face side of the 3a of output gear portion.Therefore, when the revolving force of rotor 11 passed to the 3a of output gear portion or makes output shaft 3 to any direction rotation because of load, by clutch operating groove 3b guiding, clutch control lever 41 rotated thus with projection 41e in operation.That is, clutch control lever 41 is by carrying out being connected of the 2nd clutch apparatus 4 disconnecting change action with trough with the corresponding crest that switches above-mentioned cam surface 41a of rotational angle of output shaft 3.

In addition, the portion 41c of pushing is, the initial condition of energising never switch on, bar 8 risen to forming assigned position during, clutch pinion 21 is pushed rotor 11 sides.Thus, the pawl 21d of clutch pinion 21 engages with the pawl 11d of rotor 11, and rotor 11 is made unitary rotation with clutch pinion 21.

That is, the 2nd clutch apparatus 4 becomes connection status.

And when the 3a of output gear portion finished the rotation of regulation, clutch control lever 41 rotated and switches crest and the trough of cam surface 41a because of the guiding of clutch control lever operating groove 3b.Thus, clutch pinion 21 utilizes the spring force of compression helical spring 18 and is moved upward, and clutch pinion 21 was thrown off with just being connected of rotor 11.That is, the 2nd clutch apparatus 4 switches to off-state.

Thus, rotor 11 was disconnected with being connected of 3 of output shafts.Therefore, each gear of formation drive train 2 is subjected to the load forces of bar 8 and desires to contrary direction rotation.But, as mentioned above, rotate by clutch control lever 41, thereby in the rotational trajectory of the engaging protrusion that is located at clutch pinion 21 tops (diagram is omitted), embedding is located at the prevention member of clutch control lever 41 lower faces, with clutch pinion 21 lockings.Therefore, locked with the central gear 32 of clutch pinion 21 planet gear meshed 22.In addition, except this state, owing to continue to 1 energising of AC motor, so rim gear wheel 33 is also locked because of magnetic strength stress.Its result, each gear of drive train 2 is locked, even be subjected to the also not counter-rotating of load forces of bar 8.

When cutting off to 1 energising of AC motor, for the just disappearance of induction force of induction rotary body 16, elevating arc 25 returns because of the elastic force of spring member 39, and clutch gear 27 is thrown off with just the engaging of rotation restrictions 26 of elevating arc 25.Thus, clutch gear 27 becomes free state, its result, and the rim gear wheel 33 of planetary gears 22 becomes free state.Thus, each gear that constitutes drive train 2 because of the load forces of bar 8 to the direction of pulling out bar 8, i.e. opposite direction rotation to motor driven the time.In the way of contrary rotation, above-mentioned clutch control lever 41 is followed the position side before mentioning bar 8 against rotating of the 3a of output gear portion in the drive train 2 and is rotated.Thus, crest and the trough of the cam surface 41a of switch clutch control lever 41.Its result, the 41c of the portion that pushes of clutch control lever 41 pushes rotor 11 sides with clutch pinion 21, and the 2nd clutch apparatus 4 becomes connection status, and the 1st clutch apparatus becomes off-state, and the position of bar 8 before mentioning moved.

In addition, planetary gears 22 comprises: central gear 32, and it has with clutch pinion 21 engagement supporting from the bearing gear 32b of the actuating force of rotor 11 sides with actuating force is passed to the transmission gear 32a of planetary gear 36; Rim gear wheel 33, its have with interior all gear part 33a of planetary gear 36 engagement and with the periphery gear part 33b of speed increasing gear 28 engagements of the terminal part of clutch operating mechanism 5; Planetary gear supporting gear 34, its have the support plate 34a that rotates planetary gear bearing 36 freely respectively and with the pinion part 34b that transmits gear 23 engagements.

Therefore, when the action that engages each member that makes clutch operating mechanism 5 between the rotation restrictions 26 by making elevating arc 25 and the clutch gear 27 stops, thereby in the time of will be stopped with the rotation of the rim gear wheel 33 of speed increasing gear 28 engagement, become connection status between central gear 32 and the planetary gear supporting gear 34, pass to the revolving force of the rotor 11 of central gear 32 by clutch pinion 21, pass to the 3a of output gear portion by the transmission gear 23 with 34 engagements of planetary gear supporting gear, output shaft 3 is just with sliding pinion 7 rotations.Its result has the bar 8 with the balladeur train (diagram is omitted) of sliding pinion 7 engagement, overcomes to act on bar 8 and mentioned by the actuating force of AC motor 1 from one's body load.

On the other hand, clutch operating mechanism 5 is that the 1st clutch apparatus that is configured in the above-mentioned drive train 2 is connected, disconnects usefulness.That is, clutch operating mechanism 5 be located at launch cutaway view Fig. 1 left side half, it comprises: utilize above-mentioned ringshaped magnet 11c and make to respond to the induction rotary body 16 of rotation; Elevating arc 25, it is with the engagement of induction rotary body 16 and become and utilize spring member 39 and to carrying out the revolving member of the application of force with the direction that engaging of clutch gear 27 thrown off; Clutch gear 27, its outer peripheral face be provided be formed on this elevating arc 25 on rotation restrictions 26 engage, break away from freely engaging protrusion 27a; With the small diameter gear 27b of this clutch gear 27 engagement and with the speed increasing gear 28 of rim gear wheel 33 engagements of planetary gears 22.Planetary gears 22 as mentioned above, it is the part of the deceleration train in the drive train 2, and with speed increasing gear 28 engagements of the terminal part that becomes clutch operating mechanism 5, become the 1st clutch apparatus that switches by the compulsory exercise of clutch operating mechanism 5.

This clutch operating mechanism 5 when 1 energising of AC motor, thereby makes elevating arc 25 rotations make rotation restrictions 26 move to assigned position by the elastic force that utilizes magnetic induction to overcome spring member 39, and this rotation restrictions 26 is engaged with clutch gear 27.And, by this engaging, constitute each member of clutch operating mechanism 5, locked to the action of this moment.So in the planetary gears 22 that becomes the 1st clutch apparatus, the rotation of locking ring gear 33 becomes connection status between central gear 32 and the planetary gear supporting gear 34.

In addition, so be set as under the state that is connected between central gear 32 and the planetary gear supporting gear 34, when the 2nd above-mentioned clutch apparatus 4 also became connection status, the rotation of rotor 11 was passed to output shaft 3 sides by the central gear 32 and the planetary gear 34 of planetary gears 22.Thus, carry out the lifting action of bar 8, simultaneously, above-mentioned clutch control lever 41 rotates with this action interlock.After promoting release, only the 2nd clutch apparatus 4 becomes off-state, and each gear that constitutes clutch operating mechanism 5 is owing to keeping still blocked state because of magnetic strength stress, so the central gear 32 of the 1st clutch apparatus is still kept connection status with planetary gear supporting gear 34.This moment as mentioned above, because clutch control lever 41 turns to the position that clutch pinion 21 is locked, and clutch pinion 21 is locked, so each gear of drive train 2 is locked, even be subjected to the also not counter-rotating of load forces of bar 8, bar 8 is held in raised position.

And, when cutting off energising, rotor 11 from this state again and responding to the magnetic strength stress relieved of 16 of rotary bodies to AC motor 1, elevating arc 25 because of the elastic force of spring member 39 to rotating in the opposite direction with previously described side, rotation restrictions 26 is thrown off with engaging of clutch gear 27.Thus, the lock-out state of clutch operating mechanism 5 is disengaged, and clutch pinion 21 is still locked by clutch control lever 41, so, this time rim gear wheel 33 becomes connection status with planetary gear supporting gear 34, the revolving force of desiring the output shaft 3 of contrary rotation because of external load is transmitted into and drive train 2 is driven in the wrong direction and passes to clutch gear 27 by planetary gears 22 and speed increasing gear 28, and clutch gear 27 just becomes free rotation state.Its result, the maintenance in raised position of bar 8 is disengaged.

Now further describe the each several part that constitutes clutch mechanism 5.

At the fulcrum 25a with the elevating arc 25 that becomes the clutch switching member is center and the fore-end of the rotatory force assigning unit 25b that extends to the opposition side on 1 limit of fan is fixed with the other end that an end is fixed on the spring member 39 of erectting the marmem system on the pin 38 of being located at motor field frame 13.

Elevating arc 25 has been endowed the rotatory force of rotating to the rotation rightabout (arrow A direction among Fig. 5) with the positive rotation of AC motor 1 because of the elastic force of spring member 39.But, the rotating torques of following the induction rotary body 16 that the rotor 11 of AC motor 1 rotates surpasses the driving torque of spring member 39, so induction rotary body 16 is being followed rotor 11 when rotating, elevating arc 25 overcome spring member 39 elastic force and to rotating in the opposite direction with above-mentioned arrow A side.In addition, near the spring member 39, dispose the generating component (diagram is omitted) that generates heat synchronously with the energising of AC motor 1.

Spring member 39 is marmem systems, its formation: by the heating that utilizes generating component the temperature of this spring member 39 is risen, thereby spring constant is descended, elastic force dies down.Therefore, when to AC motor 1 energising, utilize magnetic strength stress that the rotation of rotor 11 is passed to induction rotary body 16 and when making elevating arc 25 rotations, the elastic force of spring member 39 just dies down.So when making elevating arc 25 rotations at the elastic force that overcomes spring member 39, the power that the elastic force of spring member 39 just can be lighter is rotated driving to the elevating arc 25 that utilizes magnetic strength stress.Therefore, elevating arc 25 can be rotated smoothly and reliably.Its result, the 1st clutch apparatus can carry out reliably from being disconnected to the change action of connection.

On the other hand, in that the 1st clutch apparatus is switched to from connection under the situation of disconnection, as mentioned above, the energising of AC motor 1 is cut off.Thus, just stop heating with the synchronous generating component of AC motor 1.Therefore, the temperature of spring member 39 descends, and the elastic force of spring member 39 restores.So, with the maximum elastic force of spring member 39, just can make elevating arc 25 rotations, the 1st clutch apparatus just becomes reliable from the change action that is connected to disconnection.In addition, in this example, the spring member 39 of marmem system is used as force application component, but makes the different structure of its elastic force, also available other devices so long as utilize the direction of rotation of clutch switching member.

In addition, above-mentioned example is the example of preferable example of the present invention, but is not limited thereto, and without departing from the spirit and scope of the present invention, can do various distortion and implement.For example, as mentioned above, in this example, its structure is made: the ringshaped magnet 11c that directly is adhesively fixed on the inner peripheral surface of rotor magnet 11b, dispose non magnetic conducting ring 16a at the more radially inner side of ringshaped magnet 11c.But also can make ringshaped magnet 11c separate configuration from rotor magnet 11b to radially inner side as shown in Figure 6, at the non magnetic conducting ring 16a of this separate section (with reference to the G part among Fig. 6) configuration.Make so, open because two magnet 11b, 11c divide, so magnetic force does not interact.Therefore, in above-mentioned example,, also can not make magnetization width unanimity especially though structure is to make ringshaped magnet 11c consistent with the circumferential magnetization width of rotor magnet 11b.

In addition, in above-mentioned example, because the ringshaped magnet 11c that rotor magnet 11b and magnetic induction are used is that other body is made, so for example when being used for the purposes that motor torque need not to do so greatly, can dwindling the size of rotor magnet 11b and obtain the densification of device.

In addition, in above-mentioned example, utilize bonding way that rotor magnet 11b and ringshaped magnet 11c are fixed.But also can be as shown in Figure 7, peripheral part upper end at ringshaped magnet 11c is provided with a plurality of protuberances 51, being formed at after hole on this protuberance 51 is embedded in a plurality of protruded stigmas 52 that are formed at rotor magnet 11b upper part, fix two magnet 11b, 11c by carrying out hot riveting (Hot カ シ メ).

In addition, in above-mentioned example,, utilize recess 11m and protuberance 11n at chimeric rotor magnet 11b and ringshaped magnet 11c and when being adhesively fixed.But also can not utilize the chimeric of recess 11m like this and protuberance 11n, Yi Bian and on one side two magnet 11b, 11c location is fixed with anchor clamps in advance, under this state, be adhesively fixed.

In addition, in above-mentioned example, constitute rotor magnet 11b, constitute ringshaped magnet 11c with neodymium-iron-boron based magnet, but the material of each magnet 11b, 11c is not limited thereto with ferrite magnet.And in above-mentioned example, for improving induced magnetism back-yoke ring 16b is set, but also can cancels it.But when neodymium-iron-boron based magnet being used as magnetic induction using,, just can further improve induced magnetism, clutch operating can be set as reliable structure by this back-yoke ring 16b is set.

In addition, in each above-mentioned example, clutch apparatus made utilize planetary gears, but also can not make such structure especially.The present invention is applicable to the clutch operating mechanism that clutch apparatus is connected, disconnects, promptly, applicable to all gearmotors with magnetic induction whirligig, and the magnetic induction whirligig be provided with the rotor magnet concentric circles on the magnet used of the magnetic induction that constitutes with other body.

In addition, the structure in each above-mentioned example is: the rotation of rim gear wheel 33 is stopped, idler gear 32 and planetary gear supporting gear 34 are set as connection status, the revolving force of AC motor 1 is delivered to the 3a of output gear portion side.But also can make: the rotation of planetary gear supporting gear 34 is stopped, idler gear 32 and rim gear wheel 33 are set as connection status, the revolving force of AC motor 1 is delivered to the 3a of output gear portion side.

In addition, in above-mentioned example, be the spiral helicine spring member 39 of making marmem system directly carries out the application of force to the elevating arc 25 that becomes the clutch switching member structure, but spring member 39 also can be rotated the application of force to a direction to elevating arc 25 indirectly by other members.In addition, spring member 39 can not be a helical form also, both can be the flat spring shape, also can be other members such as rubber.

In addition, in above-mentioned example, make generating component is set near spring member 39, synchronously make the structure of the temperature rising of spring member 39, but also can make the structure of directly switching on to spring member 39 with the energising of AC motor 1.In addition, in case the temperature that rises is carried out chilling, also can be near spring member 39 fan that starts with the timing mode that cuts off 1 energising of AC motor of setting or carry out chilling with Peltier's element.In addition, descend for impelling metapyretic temperature, also can be at the outer setting spring member 39 of housing 12 and the member of heating usefulness, or near the spring member 39 of housing 12, ventilating opening is set.

As described above, the present invention have be connected with rotor and do output shaft that rotation drives, to the clutch apparatus that is connected, disconnects of this output shaft and rotor, to this clutch apparatus connect, the clutch operating mechanism of opening operation, clutch operating mechanism has: with link either party of magnet that the magnetic induction of rotating uses or non magnetic conductive member of rotor; Utilize magnetic induction and follow the opposing party of this side rotation, be connected clutch apparatus with the opposing party's interlock of following rotation, and be provided on the concentric circles of relative rotor.

Therefore, needn't be as the gearmotor of existing magnetic induction way, in the place ahead of the speedup train that connects with rotor the electromagnetic clutch portion that makes the relative configuration with inductance loop of permanent magnet, the noise that is produced in the time of can reducing each gears engaged are set.In addition, can suppress the save spaceization that train part number also can obtain magnetic-inductive device.

In addition, adopt other the present invention, since will with rotor magnet in addition the magnet fixed configurations used of the magnetic induction of body on the concentric circles of relative rotor, so device integral body is very compact, and (or MIN) characteristic of the best that rotor magnet is had use as motor driven, simultaneously, the magnet that magnetic induction is used has the characteristic of non magnetic conductive member being carried out the best that magnetic induction uses.That is to say, irrelevant and can only strengthen the magnetic force of the magnet that magnetic induction uses with the characteristic of rotor magnet, the reliability that clutch operating mechanism that clutch apparatus is connected, disconnects moves can be improved, thereby the connection of clutch apparatus can be carried out reliably.

In addition, adopt other the present invention, because either party the 1st rotary body of ringshaped magnet that magnetic induction uses and non magnetic conductive member will be installed to be configured on the concentric circles with the 2nd rotary body that the opposing party is installed, and have viscoid between the two, magnetic strength stress separated and driving torque when making the rotation of the 2nd rotary body so assist by the viscosity of viscoid.Therefore, strengthened, can be improved the reliability of the clutch operating mechanism action that clutch apparatus is connected, disconnects, can be carried out the connecting moves of clutch apparatus reliably by the rotating torques of the 2nd rotary body that magnetic induction produced.

In addition, adopt other the present invention, utilizing magnetic strength stress that clutch apparatus is switched to the structure that the application of force of force application component dies down when connecting from disconnection owing to make, so the revolving force that magnetic strength stress is produced more effectively is delivered to rotary body, can more reliably clutch apparatus be switched to connection from disconnection.And, in that clutch apparatus is switched to when disconnecting from connection, because the application of force of force application component becomes original state, so also can guarantee the reliability of this action.

Claims (17)

1. a gearmotor has: be connected the also output shaft of rotatable driving with rotor; To the clutch apparatus that this output shaft and being connected of described rotor connecting, disconnects, described clutch apparatus has the planetary gears that constitutes by the planetary gear supporting gear of planetary gear bearing, with the central gear and the rim gear wheel of planetary gear engagement; To this clutch apparatus connect, the clutch operating mechanism of opening operation, clutch operating mechanism has: to the connection of described clutch apparatus, disconnect the clutch switching member that switches; In magnet of using with the magnetic induction of rotor interlock rotation and the non magnetic conductive member one; Utilize magnetic induction and follow the described magnet of a rotation in described magnet and the non magnetic conductive member and in the non magnetic conductive member another, another interlock in described clutch operating mechanism and the described magnet of following rotation and the non magnetic conductive member and be connected clutch apparatus, and described magnet is provided on the concentric circles of relative rotor with non magnetic conductive member

With another interlock in described magnet of following rotation and the non magnetic conductive member be, utilize described clutch switching member to stop any one rotation in described central gear, described rim gear wheel and the described planetary gear supporting gear, and the rotation by other two gears with described rotor passes to described output shaft

When motor was connected, described clutch connected, when motor disconnects, and described clutch separation.

2. gearmotor as claimed in claim 1 is characterized in that, described planetary gear supporting gear is connected to the output shaft side, and described planetary gears is used as reducing gear.

3. gearmotor as claimed in claim 2, it is characterized in that, between the described planetary gears of described rotor and composition the 1st clutch apparatus, be provided with connecting described output shaft and being connected of described rotor, the 2nd clutch apparatus that disconnects, under disconnecting the state of the 2nd clutch apparatus, by making described rotor rotation utilize another rotation in described magnet and the non magnetic conductive member to lock in described rim gear wheel or the described central gear any one, and be provided with desiring the reversing that the opposing party of the described rim gear wheel of contrary rotation or described central gear locks again and prevent locking mechanism because of acting on external load on the described output shaft under this lock-out state.

4. gearmotor as claimed in claim 3 is characterized in that, described the 2nd clutch apparatus comprises: described rotor; By to axial knee-action and the clutch pinion that can be connected, disconnect with described rotor; Be configured in the spring member between described rotor and the described clutch pinion; And clutch control lever, itself and be configured in described planetary gears and described output shaft between gear interlock and move, and the elastic force that overcomes described spring member with this action descends described clutch pinion, thereby described rotor is connected with described clutch pinion, simultaneously by relying on the elastic force of described spring member that described clutch pinion is risen, thereby make described rotor and the disconnection of described clutch pinion with described gear interlock action.

5. gearmotor as claimed in claim 3, it is characterized in that, described the 2nd clutch apparatus, when being configured in described gear between described planetary gears and the described output shaft when acting on the contrary rotation of external load on the described output shaft, become connection from disconnection along with this contrary rotation.

6. gearmotor as claimed in claim 3, it is characterized in that, also have stop to drive described motor, when stopping another the rotation in described magnet and the non magnetic conductive member with another and the latch-release device of being removed being connected of described rim gear wheel or described central gear in described magnet and the non magnetic conductive member, remove this connection by this latch-release device, and utilize external load and make the contrary rotation of described output shaft.

7. gearmotor as claimed in claim 1 is characterized in that, described magnet is that split forms with the rotor magnet that drives described rotor.

8. gearmotor as claimed in claim 7 is characterized in that, described magnet directly is fixed on the described rotor magnet, and make described two magnet to circumferential magnetization width unanimity, and it is different mutually to constitute the magnetic pole of adjacency of described two magnet.

9. gearmotor as claimed in claim 7 is characterized in that, makes described magnet leave described rotor magnet and disposes, and disposes described non magnetic conductive member at this separating part.

10. gearmotor as claimed in claim 7, it is characterized in that, the magnetization orientation of described rotor magnet become the magnetic pole anisotropy and the magnetic flux of stator department side sine wave output, and the magnetization orientation of described magnet become isotropism and magnetic flux from this magnet to described non magnetic conductive member side output square wave from this rotor magnet to relative configuration with this rotor magnet.

11. gearmotor as claimed in claim 1, it is characterized in that, also be provided with: drive member, it is connected with another interlock and described clutch apparatus switched in the described magnet of following rotation and the non magnetic conductive member, and by described rotor driven; Transmission member, its by viscoid bear this drive member actuating force and with this actuating force pass to described another.

12. gearmotor as claimed in claim 11, it is characterized in that, one in described magnet and the non magnetic conductive member is installed on the 1st rotary body with described drive member, in described magnet and the non magnetic conductive member another is installed on the 2nd rotary body with described transmission member, the swivel bearing portion of described the 2nd rotary body rotation of supporting is set on described the 1st rotary body, and in this rotation support sector, is provided with described viscoid.

13. gearmotor as claimed in claim 11 is characterized in that, constitutes described viscoid with lubricating grease.

14. gearmotor as claimed in claim 11, it is characterized in that, described clutch operating mechanism has the clutch switching member, another interlock rotation in itself and described magnet and the non magnetic conductive member, simultaneously to the connection of described clutch apparatus, disconnection is switched, and will utilize described magnetic strength stress and this clutch switching member is rotated to a side, described clutch apparatus switches to described magnet when connecting and another the rotary speed the non magnetic conductive member is provided with to such an extent that than not utilizing described magnetic strength stress described clutch switching member is rotated to the opposing party from disconnection, described clutch apparatus from connection switch to when disconnecting described magnet and the non magnetic conductive member another rotary speed also at a high speed.

15. gearmotor as claimed in claim 14, it is characterized in that, described clutch switching member is, to carrying out switching to the direction of action of disconnection to the described clutch apparatus application of force from connection, in described magnet and the non magnetic conductive member another overcomes the application of force that is subjected to by described clutch switching member, and utilizes described magnetic strength stress to make clutch apparatus to the direction rotation that switches to connection from disconnection.

16. gearmotor as claimed in claim 1, it is characterized in that, also has force application component, it switches to by another interlock in described clutch switching member and the described magnet of following rotation and the non magnetic conductive member and with described clutch apparatus and is connected, while is carried out the application of force to the direction that described clutch apparatus switches to disconnection to described clutch switching member, follow described side rotation by another application of force of utilizing magnetic induction to overcome described force application component in described magnet and the non magnetic conductive member, and the application of force that makes described clutch apparatus switch to the described force application component when connecting is weaker than described clutch apparatus and switches to the application of force when disconnecting.

17. gearmotor as claimed in claim 16 is characterized in that, described force application component, when increasing with heat the application of force with regard to die down, heat reverts to the marmem of the original application of force when reducing and forms.

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