CN100402879C - Electromagnetic clutch - Google Patents
Electromagnetic clutch Download PDFInfo
- Publication number
- CN100402879C CN100402879C CNB2005100882169A CN200510088216A CN100402879C CN 100402879 C CN100402879 C CN 100402879C CN B2005100882169 A CNB2005100882169 A CN B2005100882169A CN 200510088216 A CN200510088216 A CN 200510088216A CN 100402879 C CN100402879 C CN 100402879C
- Authority
- CN
- China
- Prior art keywords
- armature
- rotor
- live axle
- rotation
- solid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Electromagnets (AREA)
- Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
Abstract
To provide an electromagnetic clutch capable of dispensing with a conventional return spring and shortening both of torque transmission time and torque release time between a rotor and an armature and having excellent response property. A magnetic path forming member including the rotor 3, the armature 5, and a yoke 4 is a soft magnetic body. The armature 5 is arranged slidably along the axial direction in an internal space S surrounded by the rotor 3 and a rotary body 2. Engaging pieces 54 protruding toward the rotary body 2 are formed in a plurality of sections along the peripheral direction of the armature 5. Armature locking parts 24 engaging with the engaging pieces 54 are formed in the rotary body 2.
Description
Technical field
The present invention relates to small-sized electromagnetic clutch.
Background technique
For example, in image forming apparatuss such as duplicating machine and printer, for the front end that makes the toner image that is formed at photosensitive drum body with consistent with the paper feeding time of paper front end, by will with the numeration cylinder (Japanese: レ ジ ス ト ロ one ラ) magnetic clutch of combination is communicated with, drive the numeration cylinder, the image transfer printing is being used on the suitable position of paper.
As the small-sized electromagnetic clutch that is applicable to such image forming apparatus, provided structure (for example, with reference to patent documentation 1 etc.) for example shown in Figure 9 in the past.
This magnetic clutch has the live axle 1 of hollow, and the D cutting part 11 of the cross section D font of this live axle 1 is connected with not shown load (occasion of above-mentioned image forming apparatus is the axle of numeration cylinder).Solid of rotation 2 rotations trip freely is embedded in the outside of this live axle 1, and the interlocking of the outside of rotor 3 and this live axle 1, and rotates with live axle 1 one.Solid of rotation 2, the outside that is embedded in the cylinder axial region 21 on the live axle 1 in trip is provided with by the electric motor driven gear part 22 outside scheming.And, the outboard shafts supporting of yoke 4 trip embedding ground driven shafts 1.Therefore, even live axle 1 and rotor 3 rotations, yoke 4 also slides, thereby keeps state of rest.
Above-mentioned rotor 3 has: outside cylindrical portion 31, inside cylindrical portion 32, and connect the joint 33 of two cylindrical part 31 and 32, on linking department 33, form along the many places of its circumferencial direction and to hide magnetic hole 34.These hide magnetic hole 34 and are used to guarantee magnetic resistance, so that the magnetic circuit of armature 5 described later is formed easily.
Be provided with the discoideus armature of hollow 5 on the position roughly relative with the joint 33 of rotor 3 and the screening magnetic hole between the solid of rotation 2 34, an end of hollow dish shape backspring 6 is fixed on this armature 5, and the other end of backspring 6 is fixed on the solid of rotation 2.Therefore, armature 5 and backspring 6 and the rotation of solid of rotation 2 one simultaneously can be by backspring 6 towards axial fine motions.
Yoke 4 is made of major diameter tube portion 41, minor diameter tube portion 42 and the base plate 43 that connects two tube portions 41 and 42, in the inside folding and unfolding that surrounds by each one 41～43 coil rack 8 is arranged, be wound with on it for joint 33 relative magnetic pole pieces and apply magnetomotive coil 7 armature 5 and rotor 3.
This yoke 4, large-diameter portion 41 is faced by the outside cylindrical portion 31 of small space and rotor 3, and minor diameter tube portion 42 is supported on the live axle 1 by the friction-reducing material 91 that is made of resin etc.And, between the inside cylindrical portion 32 of coil rack 8 and rotor 3, clip the friction-reducing material 92 that constitutes by resin etc.
The periphery of end forms fastening groove 93 about live axle 1, and the back-up ring 94 of plane C font that has breach in the part of circumferencial direction is chimeric with each fastening groove 93, is provided with the packing ring 95 that prevents loosening usefulness in the inboard of each back-up ring 94.Solid of rotation 2 is not obtaining locating in that dislocation ground is not axially taking place by rotor 3 with across the back-up ring 94 of packing ring 95.Yoke 4 is not obtaining locating in that dislocation ground is not axially taking place by rotor 3 with across the back-up ring 94 of packing ring 95.The 96th, the lead that is connected with coil 7.
In the said structure, when by 96 pairs of coils of lead, 7 energising excitations, then the magnetic pole piece that is formed by the linking department 33 of rotor 3 and armature 5 relative parts produces attraction force and makes both 3,5 combinations, its result, moment of torsion is from being passed to rotor 3 by the electric motor driven solid of rotation 2 outside the figure by backspring 6, armature 5, further make live axle 1 rotation that combines with rotor 3 one, thereby drive the outer load of figure.Yoke 4, coil 7, coil rack 8, though 1 rotation of rotor 3 and live axle, and friction-reducing material 91,92 between also can produce and slide and keep state of rest.
Magnetic circuit when these coil 7 energisings constitutes: the major diameter tube portion 41 of the base plate 43 → yoke 4 of the minor diameter tube portion 42 → yoke 4 of the peripheral part → yoke 4 of the inside cylindrical portion 32 → live axle 1 of the joint 33 → rotor 3 of joint 33 → armature 5 → rotor 3 of the outside cylindrical portion 31 → rotor 3 of the large-diameter portion 41 → rotor 3 of yoke 4.
When coil 7 demagnetizations, then armature 5 is disengaged with the electromagnetic combination of rotor 3, and armature 5 returns back to solid of rotation 2 sides because of the elastic force of backspring 6, and the moment of torsion transmission is cut off.
[patent documentation 1] Japanese patent laid-open 8-210384 communique
But, in the magnetic clutch in the past, even the magnetic circuit of rotor 3, armature 5 and yoke 4 forms relict flux in the member after coil 7 demagnetizations, exist between rotor 3 and the armature 5 to produce bare charm and the worry of transmitting torque, thereby utilize backspring 6 forcibly armature 5 to be drawn back from rotor 3.
But, when using backspring 6,3,5 be bonded to and obtain freeing the required time (freeing the time) and understand change when rotor 3 and armature 5 combine the demagnetization of required time (hereinafter referred to as the moment of torsion passing time), coil 7 reliably when causing coil 7 excitations because of the deviation of its elastic force hereinafter referred to as moment of torsion.
Occasion with above-mentioned image forming apparatus is an example, and when the change of moment of torsion passing time, the rotation elapsed time of the cylinder that then counts, the front end dislocation that deviation causes being formed at the front end and the thin slice of the toner image on the photosensitive drum body took place.And when moment of torsion was freed the time change, the cylinder that then can count can't stop on the regular position, the problem that the thin slice that can't stop to send here from behind is such.
Like this, as long as use backspring 6, will free producing deviation on the time because of the deviation of its elastic force at moment of torsion passing time and moment of torsion, armature 5 elastic force that need overcome backspring 6 combines with rotor 3 simultaneously, so certainly exist limitation for the shortening response time.
Summary of the invention
The objective of the invention is to, provide a kind of and do not use backspring, can realize that moment of torsion passing time and moment of torsion free time both sides' shortening, magnetic clutch that responsiveness is good.
In order to achieve the above object, magnetic clutch of the present invention comprises: the live axle that is connected with load; Trip is embedded in the solid of rotation of this live axle periphery; With described live axle one rotor rotated; With described solid of rotation one rotation and can be near the armature of setting with respect to described rotor with leaving; Has the yoke that applies magnetomotive coil for the magnetic pole piece relative with this armature and described rotor, it is characterized in that, comprise described rotor, it is soft magnetic bodies that armature and yoke form member at interior magnetic circuit, and in the inner space that surrounds by described rotor and solid of rotation, described armature is configuration slidably vertically, form towards the outstanding snap-latch piece of described solid of rotation in many places along the circumferencial direction of this armature, each snap-latch piece has when overlooking and is the U font, the L font, any shape in the I font, thereby when excitation, be subjected to twisting moment and strain takes place, when excited state switches to erasing state then because this distortion moment and produce the gap at described magnetic pole piece, and on described solid of rotation, form the armature hooking part that engages with described snap-latch piece and described armature one is rotated.
Magnetic clutch of the present invention has been eliminated backspring, need not overcome elastic force as in the past when coil magnetization armature is combined with rotor, therefore can make both in conjunction with transmitting torque immediately.And, the composition member that comprises the magnetic circuit of rotor and armature is a soft magnetic bodies, so the power that attracts each other of rotor and armature increases, both combinations securely behind coil magnetization, and during the coil demagnetization, almost do not have residual magnetic between rotor and the armature,, do not have the transmission of moment of torsion so attraction force between the two disappears immediately.
Therefore, eliminate in the past like that the deviation that moment of torsion passing time that the elastic force because of backspring causes and moment of torsion are freed the time, can realize that moment of torsion passing time and moment of torsion free the time both sides and all shorten, improved the responsiveness of magnetic clutch.
Description of drawings
Fig. 1 is the sectional view of the magnetic clutch of expression example 1 of the present invention.
Fig. 2 is the exploded perspective view of the same magnetic clutch of expression.
Fig. 3 is that the assembled state with armature in the same magnetic clutch and solid of rotation carries out the side view that biopsy cavity marker devices is represented.
Fig. 4 is the shape of expression back-up ring, is its plan view with figure (a), is its side view with figure (b).
Fig. 5 is to use the explanatory drawing of gap adjustment anchor clamps with the situation of back-up ring positioning and fixing on live axle.
Fig. 6 is the figure that the variation of snap-latch piece that the armature peripheral part is formed describes, and all is that assembled state with armature and solid of rotation carries out the side view that biopsy cavity marker devices is represented with the figure (a) and (b).
Fig. 7 is the variation of expression armature, is plan view with figure (a), is side view with figure (b).
Fig. 8 is other variation of expression armature, is plan view with figure (a), is side view with figure (b).
Fig. 9 is a sectional view of representing magnetic clutch in the past.
Embodiment
[example 1]
Fig. 1 is the sectional view of the magnetic clutch of expression example 1 of the present invention, Fig. 2 is the exploded perspective view of the same magnetic clutch of expression, Fig. 3 is that the assembled state with armature and solid of rotation carries out the side view that biopsy cavity marker devices is represented, Fig. 4 is the shape of expression back-up ring, with figure (a) is its plan view, is its side view with figure (b).The constituent element corresponding with conventional art shown in Figure 9 put on prosign.
The magnetic clutch of this example 1 is that main body constitutes with live axle 1, solid of rotation 2, rotor 3, yoke 4, armature 5 and coil 7, has omitted such in the past backspring.
Above-mentioned live axle 1 is a hollow, and the D cutting part 11 of its cross section D font is connected with not shown load (occasion of image forming apparatus is the axle of numeration cylinder).Form the lip part 12 that stretches out towards foreign side radially in the axial neutral position of this live axle 1, on the circumference side of solid of rotation 2 sides of this lip part 12, form projection 13 in many places (being 3 places in this example) along the circumferential direction.
Solid of rotation 2 is forming synthetic resin spares, comprising: trip is embedded in the cylinder axial region 21 in the outside of live axle 1; Be arranged on the periphery of this cylinder axial region 21 and by the outer electric motor driven gear part 22 of figure; From the crown cover portion 23 that cylinder axial region 21 one are extended.
In this cover portion 23, the armature hooking part 24 of the concavity that engages with the snap-latch piece described later 54 that is formed at armature 5 along the circumferential direction many places (being 6 places in this example) forms, and the armature stacker portion 25 of the short cylindrical shape of the ring portion described later 51 of accepting armature 5 is set in many places (being 6 places in this example) along the circumferential direction.
And the projection card that is provided with as the hooking part that engages with each projection 13 of live axle 1 at the interior Zhou Duan of the diameter diminution part 36 of rotor 3 ends breach 39.End breach 39 by this projection card and engage with projection 13, rotor 3 is rotated with live axle 1 one.Also can be provided with recess, be provided with the projection that engages with this recess, both are engaged at the interior Zhou Duan of rotor 3 in the many places along the circumferential direction of the lip part 12 of live axle 1.
Also can make the structure that changes number of poles by the number that respectively hides the magnetic hole that changes rotor 3 and armature 5.
In addition, in the periphery of the ring portion 51 of armature 5, many places along the circumferential direction form the snap-latch piece 54 that is seen as the U font towards solid of rotation 2 outstanding planes.This snap-latch piece 54 inserts to be located in the described armature hooking part 24 of solid of rotation 2.Thus, between the armature stacker portion 25 of the linking department 37 of rotor 3 and solid of rotation 2, ring portion 51 fine motion vertically of armature 5, and snap-latch piece 54 engages with armature hooking part 24 in a circumferential direction, rotates with solid of rotation 2 one.
Yoke 4 is by major diameter tube portion 41; There is the coil rack 8 that is wound with coil 7 in minor diameter tube portion 42 and connect both base plate 43 between 41,42 and constitute in the inside folding and unfolding that is surrounded by each one 41～43.This yoke 4, large-diameter portion 41 is faced by the cylindrical part 35 of small space and rotor 3, and minor diameter tube portion 42 is supported on the live axle 1 by friction-reducing material 91.Therefore, even live axle 1 and rotor 3 rotations, yoke 4 also takes place to slide and keeps state of rest.
Here, each magnetic circuit of above-mentioned live axle 1, rotor 3, yoke 4, armature 5 forms member and uses soft magnetic bodies respectively.This occasion as soft magnet, for example can be used non-oriented electromagnetic steel sheet having (JIS C2552) or electromagnetism soft iron (JIS C2504) etc.
Even rotor 3, yoke 4, the armature 5 that becomes magnetic circuit formation member is used the occasion of soft magnetic bodies, when having relict flux after the demagnetization, still have the magnetic pole piece generation bare charm of the relative part of rotor 3 and armature 5 and make both 3,5 continue in conjunction with and the worry of transmitting torque.This relict flux is subjected to the influence of the coercive force Hc of material, and this coercive force increases because of machining deformation.
Therefore,, need to eliminate machining deformation, reduce coercive force in order to reduce relict flux.Therefore, preferably for example be about 550～600 ℃, 30～90 minutes the steam treatment in the water vapour atmosphere of being exposed to.As the steam treatment having implemented, the relict flux amount in the magnetic circuit reduces, thereby along with using soft magnetic bodies, does not free the time even the moment of torsion that backspring also can shorten armature 5 and rotor 3 is set during demagnetization.As the secondary effect of carrying out this steam treatment, can form the cured layer of magnetic lining at material surface, can become cheap antirust processing, make armature 5 and rotor 3 not easy to wear simultaneously.Carrying out annealing in process under about 750 ℃ atmosphere replaces steam treatment also can obtain identical effect.
Chimeric respectively in the both sides of live axle 1 have a back-up ring 100.Thus, clip solid of rotation 2, rotor 3 and armature 5 at axial limiting, and the opposing party's (left side among Fig. 1) the back-up ring 100 and the lip part 12 of live axle 1 clip yoke 4 at axial limiting by a side's (right side among Fig. 1) the back-up ring 100 and the lip part 12 of live axle 1.And for a side back-up ring 100, its mounting point is set at the small axial clearance of the ring portion 51 that can guarantee armature 5 fine motion vertically between the armature stacker portion 25 of the linking department 33 of rotor 3 and solid of rotation 2.
Above-mentioned each back-up ring 100 is made of annulus portion 111, the jut 112 that along the circumferential direction equally spaced forms in interior all sides of this annulus portion 111, and inwardly the side is outstanding towards the footpath from annulus portion 111 for jut 112, forms towards axial bending simultaneously.Chimeric with the periphery of live axle 1 by this jut 112, back-up ring 100 can be fixed on the position arbitrarily vertically of live axle 1.Therefore,, just do not need in the past circlip groove and packing ring if use such back-up ring 100, thus compared with the past can be simply and assemble magnetic clutch at an easy rate.
The 96th, the lead that is connected with coil 7, the 97th, the padded coaming of the ring-type that constitutes by synthetic resin etc.
In the magnetic clutch of this example 1, when to coil 7 energising, the magnetic pole piece generation attraction force that forms by the ring portion 51 relative parts of the linking department 37 of rotor 3 and armature 5 then, armature 5 slides vertically and combines with rotor 3.
This occasion, the scope of armature 5 fine motion vertically is small, and does not use such in the past backspring, does not combine with rotor 3 so armature 5 does not need to overcome its elastic force ground, therefore, can shorten the moment of torsion passing time, improves responsiveness.And, do not had to cause the such situation of moment of torsion passing time deviation, so make moment of torsion passing time stabilization because of the elastic force deviation of backspring.
When rotor 3 combined with armature 5, then moment of torsion was schemed outer load from being passed to rotor 3 by the electric motor driven solid of rotation 2 outside the figure by armature 5, further make live axle 1 rotation that combines with rotor 3 thereby drive.Even 1 rotation of rotor 3 and live axle, yoke 4, coil 7, coil rack 8 also can and friction-reducing material between produce and slide and keep state of rest.
The magnetic circuit that produces during with these coil 7 excitations constitutes: the major diameter tube portion 41 of the base plate 43 → yoke 4 of the minor diameter tube portion 42 → yoke 4 of the peripheral part → yoke 4 of the lip part 12 → live axle 1 of the diameter diminution part 36 → live axle 1 of the joint 37 → rotor 3 of the ring portion 51 → rotor 3 of the joint 37 → armature 5 of the cylindrical part 35 → rotor 3 of rotor 3.
Here, when coil 7 demagnetizations, then armature 5 is freed from attraction force, and the linking department 37 of rotor 3 is disengaged with the combining of ring portion 51 of armature 5, and the moment of torsion transmission is cut off.
This occasion makes the U font with the snap-latch piece 54 of armature 5 and engages with the armature hooking part 24 of solid of rotation 2, so during coil magnetization, the snap-latch piece 54 of armature 5 is subjected to twisting moment and forms state into strain.Therefore, after coil 7 demagnetizations, by this distortion moment, the magnetic pole piece that rotor 3 and the Magnetic flux density of armature 5 are high is easy to generate the gap, and both remove rapidly 3,5 binding energy, can shorten moment of torsion and free the time.
In order to assemble the magnetic clutch of said structure, one distolateral (right side among Fig. 1) that rotor 3 is inserted live axles 1 ended breach 39 with the projection card of rotor 3 and engaged with the projection 13 of lip part 12, simultaneously diameter reduction portion 36 taken a seat in lip part 12.Then, with under the snap-latch piece 54 of armature 5 and the state that the armature hooking part 24 of solid of rotation 2 engages armature 5 and solid of rotation 2 are being inserted in the live axles 1.Then, back-up ring 100 is inserted the distolateral of live axles 1, and between the lip part 12 with rotor 3, armature 5 and solid of rotation 2 at axial limiting.
With another distolateral (left side among Fig. 1) that coil rack 8, yoke 4 and back-up ring 100 insert live axle 1 successively, axially locating between this back-up ring 100 and lip part 12 with coil rack 8 and yoke 4.
When back-up ring 100 is inserted one distolateral (right side among Fig. 1) of live axle 1, when with back-up ring 100 excessively when lip part 12 sides are inserted, the ring portion 51 of armature 5 is rotated the armature stacker portion 25 of body 2 and the linking department 37 of rotor 3 clips securely, axially can't fine motion and lose effect as clutch.Therefore, can fine motion between the armature stacker portion 25 of the linking department 37 of rotor 3 and solid of rotation 2 for the ring portion 51 that makes armature 5, need guarantee small axial clearance each other at them.In addition, solid of rotation 2 can Yin Wendu during for resin molded part rises and expands, and therefore also needs to guarantee in advance axial clearance from this respect.
For this reason, for example use gap adjustment anchor clamps 120 shown in Figure 5.That is, the distolateral inner peripheral surface that these gap adjustment anchor clamps 120 will have the cylindrical part 121 of the internal diameter bigger than the external diameter of live axle 1 expands to more than the external diameter of back-up ring 100, thereby forms enlarged-diameter portion 122.After inserting back-up ring 100 in the live axle 1, gap adjustment anchor clamps 120 are inserted in the live axle 1, under the state with the annulus portion 111 of back-up ring 100 and the step part butt that produces by this cylindrical part 121 and enlarged-diameter portion 122, further push gap adjustment anchor clamps 120, with the side end face of enlarged-diameter portion 122 sides and the side end face apical grafting of solid of rotation 2.
This occasion, in advance set enlarged-diameter portion 122 suitably in axial length X, the ring portion 51 that just can guarantee armature 5 all the time is the required certain axial clearance of fine motion between the armature stacker portion 25 of the linking department 37 of rotor 3 and solid of rotation 2, can eliminate the deviation that moment of torsion passing time and moment of torsion are freed the time.
Also can for example the pad rule of predetermined thickness be replaced setting between such gap adjustment anchor clamps 120 insertion solid of rotation 2 and the back-up ring 100 insertion position of back-up ring 100.Also can carry out equally not only to the back-up ring 100 of solid of rotation 2 sides, and to the back-up ring 100 of yoke 4 sides.
Like this, the magnetic clutch of this example 1 has been eliminated such in the past backspring, so the deviation of the moment of torsion passing time that has caused because of the deviation of the elastic force of backspring when not had excitation.And the moment of torsion that has caused because of the deviation of the elastic force of such in the past backspring when also not had demagnetization is freed the deviation of time,
In this example 1, each magnetic circuit of live axle 1, rotor 3, yoke 4, armature 5 forms member and uses soft magnetic bodies, and carry out steam treatment etc. as required, thereby can reduce the interior relict flux amount of magnetic circuit, reduce bare charm, so can be that attraction gap between magnetic pole is set minimumly with the rotor 3 and the relative part of armature 5.That is,, thereby can make the axial internal clearance of armature 5 small because the axial clearance that is clipped in the occasion between rotor 3 and the solid of rotation 2 at armature 5 is set minimumly.Its result can save the extra time of armature 5 when moving axially, and moment of torsion passing time and the moment of torsion time of freeing is all shortened, and improves the responsiveness of clutch.And, because armature 5 is small at axial amount of movement, so the impulsive sound that armature 5 produces when rotor 3 is freed when impulsive sound that produces when rotor 3 is attracted with armature 5 can reduce excitation simultaneously time the and demagnetization.And, because do not have to use such in the past backspring, so can shorten magnetic clutch integral body at axial length, Miniaturizable.
Can consider following variation for above-mentioned example 1.
(1) in the above-mentioned example 1, make the snap-latch piece 54 of the peripheral part of being located at armature 5 form the U font, but be not limited thereto, for example, also can be shown in Fig. 6 (a), make and form the snap-latch piece 55 that on axial direction, bends to the L font, or make the snap-latch piece 56 that forms the I font shown in Fig. 6 (b).
Even make such structure, identical with the occasion of example 1, the snap-latch piece 55,56 of armature 5 is subjected to twisting moment and forms state into strain during excitation, so when demagnetization, by this distortion moment, the magnetic pole piece that rotor 3 and the Magnetic flux density of armature 5 are high is easy to generate the gap, and both remove rapidly 3,5 binding energy, can shorten moment of torsion and free the time.
The formation position of these snap-latch pieces 54～56 is not limited to the peripheral part of ring portion 51, also can be arranged on interior perimembranous.
(2) in the above-mentioned example 1, the snap-latch piece 54 of the ring portion 51 by will being located at armature 5 engages with the armature hooking part 24 of solid of rotation 2, armature 5 bears distortion moment when making excitation, twist moment by this during demagnetization, so that rotor 3 can promptly carry out with freeing of armature 5, but be not limited to such structure, for example, as shown in Figure 7, also can make the circumferential surface integral body or the part of armature 5 along the circumferential direction form waveform, make and axially giving flexible structure, or as shown in Figure 8, make and make the alms bowl shape of armature 5 formation towards axial slow inclination, axially give flexible structure.
Thus, during demagnetization, by the elasticity of armature 5, and the high magnetic pole piece of the Magnetic flux density between the rotor 3 is easy to generate the gap, so both binding energy of 3,5 are removed rapidly, can shorten moment of torsion and free the time.And, make armature 5 energetically under the situation that axially has elastic force, armature 5 is attracted by rotor 3 and when connecting airtight or the effect of the impulsive sound that armature 5 produces when rotor 3 leaves during demagnetization in the time of can be reduced excitation simultaneously.But, be to make armature 5 have elasticity here, also can give axial elasticity to rotor 3 with replacing.
[possibility of utilizing on the industry]
Electromagnetic clutch of the present invention is not limited to the group as image processing systems such as duplicator, printers Become member, also can be widely used in various offices usefulness equipment and household appliances, other equipment.
Claims (7)
1. a magnetic clutch comprises: the live axle that is connected with load; Trip is embedded in the solid of rotation of this live axle periphery; With described live axle one rotor rotated; With described solid of rotation one rotation and can be near the armature of setting with respect to described rotor with leaving; Has the yoke that applies magnetomotive coil for the magnetic pole piece relative with this armature and described rotor, it is characterized in that, comprise described rotor, it is soft magnetic bodies that armature and yoke form member at interior magnetic circuit, and in the inner space that surrounds by described rotor and solid of rotation, described armature is configuration slidably vertically, form towards the outstanding snap-latch piece of described solid of rotation in many places along the circumferencial direction of this armature, each snap-latch piece has when overlooking and is the U font, the L font, any shape in the I font, thereby when excitation, be subjected to twisting moment and strain takes place, when excited state switches to erasing state then because this distortion moment and produce the gap at described magnetic pole piece, and on described solid of rotation, form the armature hooking part that engages with described snap-latch piece and described armature one is rotated.
2. magnetic clutch as claimed in claim 1 is characterized in that, described magnetic circuit forms member and is implemented steam treatment.
3. magnetic clutch as claimed in claim 1 or 2, it is characterized in that, on described rotor, form diameter diminution part, axial neutral position at described live axle forms the lip part of taking a seat for described diameter diminution part, and along the circumferential direction form the many places projection being rotated in the part that body clips either party of described lip part and the diameter diminution part on this lip part of taking a seat, and on the opposing party, form the hooking part with described each protrusions snap.
4. magnetic clutch as claimed in claim 1 or 2 is characterized in that, either party of described armature and rotor, and its a circumferential surface integral body or a part along the circumferential direction form waveform, are axially giving elasticity.
5. magnetic clutch as claimed in claim 1 or 2 is characterized in that, either party of described armature and rotor forms the alms bowl shape that slowly tilts towards axially, axially giving elasticity.
6. magnetic clutch as claimed in claim 1 or 2, it is characterized in that, distolateral chimeric back-up ring at described live axle, this back-up ring is along the circumferential direction outstanding and to a plurality of juts of axial bending from interior all side direction radially inner sides of annulus portion uniformly-spaced to form, and described rotor and solid of rotation are clamped by the lip part of this back-up ring and described live axle and axially limited.
7. magnetic clutch as claimed in claim 1 or 2, it is characterized in that, distolateral chimeric at another of described live axle, this back-up ring is along the circumferential direction outstanding and to a plurality of juts of axial bending from interior all side direction radially inner sides of annulus portion uniformly-spaced to form, and described yoke is clamped by the lip part of this back-up ring and described live axle and axially limited.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004359267A JP4073911B2 (en) | 2004-12-13 | 2004-12-13 | Electromagnetic clutch |
| JP2004359267 | 2004-12-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1789746A CN1789746A (en) | 2006-06-21 |
| CN100402879C true CN100402879C (en) | 2008-07-16 |
Family
ID=36671207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100882169A Active CN100402879C (en) | 2004-12-13 | 2005-07-26 | Electromagnetic clutch |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4073911B2 (en) |
| CN (1) | CN100402879C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010255843A (en) * | 2009-03-30 | 2010-11-11 | Sinfonia Technology Co Ltd | Electromagnetic friction clutch and electromagnetic friction brake |
| JP5550043B2 (en) * | 2009-04-23 | 2014-07-16 | シンフォニアマイクロテック株式会社 | Electromagnetic clutch |
| JP2014009741A (en) * | 2012-06-29 | 2014-01-20 | Sinfonia Technology Co Ltd | Electromagnetic clutch |
| CN104747621A (en) * | 2015-04-17 | 2015-07-01 | 盖茨胜地汽车水泵产品(烟台)有限责任公司 | Electromagnetic clutch |
| JP2018025239A (en) * | 2016-08-10 | 2018-02-15 | 株式会社ジェイテクト | Differential device |
| TWI737151B (en) * | 2020-02-04 | 2021-08-21 | 和碩聯合科技股份有限公司 | Charge device and charge system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1125779A (en) * | 1994-04-26 | 1996-07-03 | 株式会社永和 | Method of and apparatus for processing metal material |
| JPH08210384A (en) * | 1995-01-31 | 1996-08-20 | Sekonitsuku:Kk | Electromagnetic clutch |
| JPH10148223A (en) * | 1996-11-19 | 1998-06-02 | Mita Ind Co Ltd | Shaft for electromagnetic clutch and electromagnetic clutch |
| JP2000074093A (en) * | 1998-09-01 | 2000-03-07 | Ogura Clutch Co Ltd | Electromagnetic spring clutch |
-
2004
- 2004-12-13 JP JP2004359267A patent/JP4073911B2/en active Active
-
2005
- 2005-07-26 CN CNB2005100882169A patent/CN100402879C/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1125779A (en) * | 1994-04-26 | 1996-07-03 | 株式会社永和 | Method of and apparatus for processing metal material |
| JPH08210384A (en) * | 1995-01-31 | 1996-08-20 | Sekonitsuku:Kk | Electromagnetic clutch |
| JPH10148223A (en) * | 1996-11-19 | 1998-06-02 | Mita Ind Co Ltd | Shaft for electromagnetic clutch and electromagnetic clutch |
| JP2000074093A (en) * | 1998-09-01 | 2000-03-07 | Ogura Clutch Co Ltd | Electromagnetic spring clutch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1789746A (en) | 2006-06-21 |
| JP2006170231A (en) | 2006-06-29 |
| JP4073911B2 (en) | 2008-04-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3202886A (en) | Bistable solenoid | |
| US6376956B1 (en) | Permanent magnet pole arrangement of motor | |
| CN100402879C (en) | Electromagnetic clutch | |
| CN106415044B (en) | Electromagnetic connector | |
| US6819209B2 (en) | Magnetic damper and actuator having the same | |
| JP6359695B2 (en) | Method and system for latching an actuator | |
| US4570768A (en) | Electromagnetically controlled spring clutch mechanism | |
| CN106063098B (en) | Actionneur electromagnetique bistable and surgical operating instrument | |
| EP2790309A1 (en) | Linear actuator and oral hygiene device | |
| KR20010020228A (en) | Improved electrical machine with double excitation | |
| DE102009031884A1 (en) | Driving force transmitting device | |
| US3175665A (en) | Electromagnetic friction clutch | |
| JP2009177957A (en) | Permanent magnet field motor | |
| EP0841497A3 (en) | Electromagnetic clutch | |
| EP1130278A3 (en) | Electromagnetic clutch with asymmetric spoke patterns | |
| JP2009058058A (en) | Electromagnetic clutch, conveyance roller, and image forming device with same | |
| JP2006296161A (en) | Linear actuator | |
| US6831538B2 (en) | Linear voice coil actuator as a controllable electromagnetic compression spring | |
| JP3384247B2 (en) | Non-excitation actuated electromagnetic clutch / brake | |
| CN100390433C (en) | Electromagnetic clutch | |
| US2986251A (en) | Magnetic clutch | |
| KR102005152B1 (en) | Dual mass flywheel | |
| JP4356422B2 (en) | Linear actuator | |
| JP2018107929A (en) | Motor rotor and manufacturing method thereof | |
| CN116998094A (en) | Magnet arrangement method, rotor manufacturing method, and magnet arrangement jig |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |