CN213899666U - Electromagnetic clutch - Google Patents
Electromagnetic clutch Download PDFInfo
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- CN213899666U CN213899666U CN202022055894.8U CN202022055894U CN213899666U CN 213899666 U CN213899666 U CN 213899666U CN 202022055894 U CN202022055894 U CN 202022055894U CN 213899666 U CN213899666 U CN 213899666U
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Abstract
The utility model discloses an electromagnetic clutch, which comprises a fixed part, a driven part and an elastic part, wherein the fixed part comprises a magnetic yoke, a plurality of iron cores are arranged on the magnetic yoke, coils are arranged on the iron cores, the driven part comprises an armature disc, and a plurality of magnetic steels are arranged on the armature disc; the armature plate is arranged corresponding to the magnetic yoke, and the iron core is arranged corresponding to the magnetic steel; the elastic component is used for keeping the armature plate at a position separated from the magnetic yoke; when the coil is electrified in the forward direction, the iron core attracts the magnetic steel, the armature plate overcomes the elasticity of the elastic component and moves to the attracting position with the magnetic yoke, so that the fixed component and the driven component are in transmission connection; when the coil is reversely electrified, the iron core generates electromagnetic force to reduce the attraction force of the magnetic steel, and the elastic force of the elastic component overcomes the attraction force of the magnetic steel to push the armature disc away to a position separated from the magnetic yoke. The utility model provides an electromagnetic clutch need not the circular telegram at detached state and actuation state, and the power consumption is little, and it is few to generate heat, long service life.
Description
Technical Field
The utility model belongs to the technical field of the clutch, in particular to electromagnetic clutch.
Background
With the continuous development of the automobile industry, the application of the electromagnetic clutch to new energy automobiles is more and more, the requirements of users on the energy consumption, the heating condition and the service life of the electromagnetic clutch are more and more urgent, and the traditional electromagnetic clutch has many defects and problems. The traditional electromagnetic clutch at present has the defects of energy consumption, heat generation, influence of current fluctuation on electromagnetic force and the like, so that the electromagnetic clutch has large heat productivity, the energy consumption of the clutch is large, and the performance and the service life of the electromagnetic clutch are influenced to a certain extent.
SUMMERY OF THE UTILITY MODEL
To the above problem, the present invention discloses an electromagnetic clutch to overcome the above problems or at least partially solve the above problems.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model discloses an electromagnetic clutch, electromagnetic clutch includes fixed part, driven part and elastomeric element, fixed part includes the yoke, set up a plurality of iron cores on the yoke, be provided with the coil on each said iron core, driven part includes the armature plate, be provided with a plurality of magnet steel on the armature plate;
the armature plate is arranged corresponding to the magnetic yoke, and the iron core is arranged corresponding to the magnetic steel;
the elastic member is used for keeping the armature plate at a position separated from the magnetic yoke;
when the coil is electrified in the forward direction, the magnetic steel is attracted by the iron core, the armature plate overcomes the elasticity of the elastic component and moves to the attraction position with the magnetic yoke, and the fixed component and the driven component are in transmission connection;
when the coil is electrified reversely, the iron core generates electromagnetic force to reduce the attraction force of the magnetic steel, and the elastic force of the elastic component overcomes the attraction force of the magnetic steel to push the armature disc away to a position separated from the magnetic yoke.
Further, the iron core and the magnetic steel are presented singly or in a combined form.
Furthermore, a plurality of iron cores are uniformly distributed in the magnet yoke, the number of the iron cores is the same as that of the magnetic steel, the positions of the iron cores correspond to those of the magnetic steel one by one, and the corresponding iron cores and the magnetic steel are on the same axis.
Furthermore, the magnetic steel is low in temperature coefficient and used for avoiding demagnetization and increasing the impact resistance of the electromagnetic clutch, so that the electromagnetic clutch can normally work under different working conditions and temperatures.
Furthermore, the top end face of the magnetic steel is rectangular, square, triangular or circular;
and the armature plate is provided with a magnetic steel groove, and the magnetic steel is fixed in the magnetic steel groove in a glue pouring or injection molding mode.
Further, the coils are connected in the following manner: parallel, series, or grouped series-parallel.
Further, a shock absorption pad is arranged on the magnetic yoke and used for positioning, a gap is kept between the armature plate and the magnetic yoke, and the shock absorption pad is also used for absorbing shock and reducing noise.
Furthermore, the driven part is sleeved on the first shaft in a sliding manner, and the fixed part is fixed on the second shaft;
a shaft pressing plate is fixed at the top end of the first shaft, and the elastic part is arranged between the driven part and the shaft pressing plate.
Further, the driven part also comprises a movable gear sleeve, the fixed part comprises a fixed gear sleeve, and the movable gear sleeve and the fixed gear sleeve can be in meshing transmission;
the fixed cover of yoke is established the fixed tooth cover outside, armature plate rotationally the cover establish the activity tooth cover outside, activity tooth cover can follow armature plate moves in the axial.
Further, the magnetic yoke and the fixed gear sleeve are in clearance fit, so that the magnetic yoke and the fixed gear sleeve can rotate relatively, the fixed gear sleeve and the movable gear sleeve rotate together when the magnetic yoke and the armature plate are fixed when the magnetic yoke and the fixed gear sleeve are in a suction position.
The utility model has the advantages and beneficial effects that:
the utility model provides an electromagnetic clutch need not the circular telegram at detached state and actuation state, and the power consumption is little, and it is few to generate heat, long service life.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is an axial cross-sectional view of an electromagnetic clutch according to an embodiment of the present invention;
FIG. 2 is a block diagram of a driven member in an embodiment of the invention;
fig. 3 is a structural diagram of a fixing member according to an embodiment of the present invention.
In the figure: 1. the magnetic bearing comprises an elastic component, 2, a magnetic yoke, 3, an iron core, 4, a coil, 5, an armature disc, 6, magnetic steel, 7, a shock pad, 8, a shaft pressing plate, 9, a movable gear sleeve, 10, a fixed gear sleeve, 11, a bearing, 12 and a bearing seat.
Detailed Description
In order to make the purpose, technical solution and advantages of the present invention clearer, the following will combine the embodiments of the present invention and the corresponding drawings to perform clear and complete description of the technical solution of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The technical solutions provided by the embodiments of the present invention are described in detail below with reference to the accompanying drawings.
The utility model discloses an embodiment discloses an electromagnetic clutch, as shown in fig. 1 and fig. 3, electromagnetic clutch includes fixed part, driven part and elastomeric element 1, and fixed part keeps fixed position in the axial on electromagnetic clutch, driven part is portable in electromagnetic clutch's axial at least, makes electromagnetic clutch be in actuation or isolated position respectively.
The fixed part includes yoke 2, yoke 2 can form the casing of electromagnetic clutch fixed part, set up a plurality of iron core 3 on the yoke 2, each be provided with coil 4 on the iron core 3, coil 4 circular telegram can produce magnetic force, driven part includes armature plate 5, be provided with a plurality of magnet steel 6 on the armature plate 5, wherein shown iron core 3 with the quantity of magnet steel 6 can set up as required.
In this embodiment, a plurality of iron cores 3 independently set up, can make magnetic induction line concentrate and intensive for magnet steel 6, and the electric energy conversion is higher, according to homopolar repulsion, heteropolar attraction principle, make coil 4 when positive circular telegram and reverse circular telegram, the electromagnetic force has very big difference, thereby realizes armature dish 5 with the separation of yoke 2.
The armature plate 5 and the magnetic yoke 2 are arranged correspondingly, the axes of the armature plate and the magnetic yoke are on the same straight line, and the iron core 3 and the magnetic steel 6 are arranged correspondingly, so that the iron core 3 and the magnetic steel 6 are attracted with each other.
The elastic part 1 is arranged in the driven part, and the elastic part 1 is compressed or stretched in a normal state, and a pre-tightening force is arranged on the elastic part to enable the armature plate to be in a certain position, so that the armature plate 5 is kept in a separation position with the magnetic yoke 2.
When the coil 4 is electrified in the forward direction, the iron core 3 attracts the magnetic steel 6, and the armature plate 5 overcomes the elastic force of the elastic component 1 and moves to the attracting position of the magnetic yoke 2, so that the fixed component and the driven component are in transmission connection.
When the coil 4 is electrified reversely, the iron core 3 generates electromagnetic force to reduce the attraction force of the magnetic steel 6, and the elastic force of the elastic component 1 overcomes the attraction force of the magnetic steel 6 to push the armature disc 5 away to a position separated from the magnetic yoke 2.
The utility model provides an electromagnetic clutch's theory of operation does: when the magnetic iron core is at a separation position, the iron core 3 has no electromagnetic force, and the compression force or the tensile force of the elastic component 1 is greater than the suction force of the magnetic steel 6, so that a normal gap is kept between the armature disc 5 and the magnetic yoke 2; when the clutch receives an attraction instruction, the coil 4 is electrified in the positive direction, the resultant force generated by the combined action of the electromagnetic force generated by the iron core 3 and the magnetic force of the magnetic steel 6 is larger than the compressive force or the tensile force of the elastic component 1, the armature plate 5 is attracted with the magnetic yoke 2, and the fixed component and the driven component are connected in a transmission way; after the attraction, the coil 4 can be powered off, the coil 4 does not generate electromagnetic force, and the magnetic force generated by the magnetic steel 6 is still larger than the compressive force or the tensile force of the elastic component 1, so that the armature plate 5 and the magnetic yoke 2 still keep the attraction state to realize transmission, and no electric energy is consumed in the state; when the clutch receives a separation instruction, in a suction state, the coil 4 is electrified by reverse current to generate electromagnetism, so that the suction force generated by the magnetic steel 6 is reduced, and when the suction force is smaller than the compression force or the stretching force of the elastic component 1, the armature disc 5 is separated from the magnetic yoke 2. The utility model provides an electromagnetic clutch need not the circular telegram at detached state and actuation state, has that the power consumption is little, generate heat few and long service life's advantage.
In one embodiment, the core 3 and the magnetic steel 6 are present individually or in combination. The iron core 3 and the magnetic steel 6 are uniformly or symmetrically distributed in a single form, and of course, the iron core 3 and the magnetic steel 6 may also be uniformly or symmetrically distributed in a combined form, for example, two of them are distributed in a group, or three of them form a triangle in a group, and so on.
In one embodiment, as shown in fig. 3, a plurality of iron cores 3 are uniformly distributed in the magnetic yoke 2, the number of the iron cores 3 is the same as that of the magnetic steels 6, and the positions of the iron cores 3 correspond to those of the magnetic steels 6 one by one, and the corresponding iron cores 3 and the magnetic steels 6 are on the same axis, so that the iron cores 3 and the magnetic steels 6 can be attracted conveniently.
In a preferred embodiment, magnet steel 6 is the magnet steel that temperature coefficient is low, samarium cobalt magnet steel for example, uses the magnet steel that temperature coefficient is low, can prevent the demagnetization phenomenon that magnet steel 6 appears when the high temperature to avoid the electromagnetic clutch the phenomenon of falling the shelves that probably appears when the high temperature, and the phenomenon of hanging that probably appears when the low temperature can not last the shelves, the magnet steel that uses temperature coefficient is low can also increase electromagnetic clutch's impact resistance, and the magnet steel that temperature coefficient is low can guarantee that the magnetic property under different temperatures changes minimumly, thereby makes electromagnetic clutch can normally work under different operating mode temperatures.
In one embodiment, the top end surface of the magnetic steel 6 is rectangular, square, triangular or circular, but may be other shapes, and the magnetic steel 6 may be formed into a T shape as a whole, and the top end surface has a large area and is flush with the surface of the magnetic yoke 2.
As shown in fig. 1, a magnetic steel groove is formed in the outer circumference of the armature plate 5, and the magnetic steel 6 is fixed in the magnetic steel groove by glue pouring or injection molding, or may be fixed in other manners. Preferably, one end of the magnetic steel 6 in the magnetic steel groove is provided with a flange, and the arrangement of the flange is convenient for the magnetic steel 6 to be firmly fixed in the magnetic steel groove.
In one embodiment, the coils 4 are connected as follows: parallel, series, or grouped series-parallel. Each of the coils 4 may be connected in series, each of the coils 4 may also be connected in parallel, and each of the coils 4 may also be connected in series and parallel, for example, a plurality of the coils 4 are selected to be connected in series to form a group, and then a plurality of groups of the coils 4 which have been connected in series are connected in parallel.
In one embodiment, as shown in fig. 3, a plurality of shock absorbing pads 7 are disposed on the outer circumference of the magnetic yoke 2, the shock absorbing pads 7 may be uniformly and/or symmetrically disposed, the shock absorbing pads 7 are used for positioning to maintain a gap between the armature plate 5 and the magnetic yoke 2, and the shock absorbing pads 7 are also used for absorbing shock and reducing noise. The damping washer 7 on the one hand prevents the armature plate 5 from directly striking the magnet yoke 2; on the other hand, when the fixed part is in transmission connection with the driven part, a certain gap is ensured between the armature plate 5 and the magnetic yoke 2, and vibration generated during transmission is reduced.
In one embodiment, the driven member is slidably disposed on the first shaft, and the driven member is movable along an axial direction of the first shaft. Preferably, the driven member is splined to the first shaft, and is circumferentially fixed and axially slidable relative to the first shaft; the fixed part is fixed on the second shaft, and the fixed part and the second shaft are fixed relatively in both the axial direction and the circumferential direction, namely, the fixed part and the second shaft do not slide relatively and rotate relatively.
As shown in fig. 1, a shaft pressing plate 8 is fixed at the top end of the first shaft, a protruding portion is arranged on one side of the shaft pressing plate 8 along the axis direction, a thread is arranged on the outer circular surface of the protruding portion, a thread groove is arranged at the axis position of the end portion of the first shaft, and the shaft pressing plate 8 is fixedly connected with the first shaft through the thread and the thread groove; the central position of the convex part is also provided with an axial screw hole, and the shaft pressing plate 8 and the first shaft are further fixed through the screw hole and a screw or a bolt. The elastic component 1 is arranged between the driven component and the shaft pressing plate 8. The shaft pressing plate 8 has the function of keeping the elastic component 1 in a compressed state all the time, and along with the separation and combination of the clutch, the compression amount of the elastic force of the elastic component 1 can be changed, and the elastic force value can also be changed. The elastic member 1 is preferably a spring.
In one embodiment, as shown in fig. 2-3, the driven part further comprises a movable gear sleeve 9, the fixed part comprises a fixed gear sleeve 10, and end faces of the movable gear sleeve 9 and the fixed gear sleeve 10 are provided with end face teeth, so that the movable gear sleeve 9 and the fixed gear sleeve 10 can be in meshing transmission; splines are respectively arranged in the movable gear sleeve 9 and the fixed gear sleeve 10, and the movable gear sleeve 9 is connected with the first shaft and the fixed gear sleeve 10 is connected with the second shaft through the splines.
2 fixed cover of yoke is established the fixed tooth cover 10 outside, armature plate 5 establishes with rotating the ground the movable tooth cover 9 outside, fixed cover is equipped with bearing 11 on the outer circumference of movable tooth cover 9, bearing 11 inlays the dress in bearing frame 12, bearing frame 12 with armature plate 5 fixed connection, and then can realize armature plate 5 with relative rotation between movable tooth cover 9, movable tooth cover 9 can follow armature plate 5 moves in the axial. And the bearing seat 12 extends to the magnetic steel groove for preventing the magnetic steel 6 from flying out.
In one embodiment, the yoke 2 and the fixed gear sleeve 10 are in clearance fit, so that the yoke 2 and the fixed gear sleeve 10 can rotate relative to each other, so that the yoke 2 and the armature plate 5 are kept fixed and the fixed gear sleeve 10 and the movable gear sleeve 9 rotate together in the attraction position. When the driven part is in transmission connection with the fixed part, the movable gear sleeve 9 and the fixed gear sleeve 10 are meshed to rotate, the magnet yoke 2 and the armature plate 5 cannot rotate, power loss is reduced, and transmission efficiency is improved.
To sum up, the utility model discloses an electromagnetic clutch, the electromagnetic clutch includes fixed part, driven part and elastomeric element, the fixed part includes the yoke, set up a plurality of iron cores on the yoke, be provided with the coil on each iron core, the driven part includes the armature plate, is provided with a plurality of magnet steel on the armature plate; the armature plate is arranged corresponding to the magnetic yoke, and the iron core is arranged corresponding to the magnetic steel; the elastic component is used for keeping the armature plate at a position separated from the magnetic yoke; when the coil is electrified in the forward direction, the iron core attracts the magnetic steel, the armature plate overcomes the elasticity of the elastic component and moves to the attracting position with the magnetic yoke, so that the fixed component and the driven component are in transmission connection; when the coil is reversely electrified, the iron core generates electromagnetic force to reduce the attraction force of the magnetic steel, and the elastic force of the elastic component overcomes the attraction force of the magnetic steel to push the armature disc away to a position separated from the magnetic yoke. The utility model provides an electromagnetic clutch need not the circular telegram at detached state and actuation state, and the power consumption is little, and it is few to generate heat, long service life.
The above description is only for the embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, extension, etc. made within the spirit and principle of the present invention are all included in the protection scope of the present invention.
Claims (10)
1. An electromagnetic clutch is characterized by comprising a fixing component, a driven component and an elastic component, wherein the fixing component comprises a magnetic yoke, a plurality of iron cores are arranged on the magnetic yoke, coils are arranged on the iron cores, the driven component comprises an armature disc, and a plurality of magnetic steels are arranged on the armature disc;
the armature plate is arranged corresponding to the magnetic yoke, and the iron core is arranged corresponding to the magnetic steel;
the elastic member is used for keeping the armature plate at a position separated from the magnetic yoke;
when the coil is electrified in the forward direction, the magnetic steel is attracted by the iron core, the armature plate overcomes the elasticity of the elastic component and moves to the attraction position with the magnetic yoke, and the fixed component and the driven component are in transmission connection;
when the coil is electrified reversely, the iron core generates electromagnetic force to reduce the attraction force of the magnetic steel, and the elastic force of the elastic component overcomes the attraction force of the magnetic steel to push the armature disc away to a position separated from the magnetic yoke.
2. The electromagnetic clutch of claim 1 wherein the core and the magnetic steel are present individually or in combination.
3. The electromagnetic clutch of claim 1 wherein a plurality of the iron cores are uniformly distributed in the magnetic yoke, the number of the iron cores is the same as the number of the magnetic steels, the positions of the iron cores correspond to the positions of the magnetic steels one by one, and the corresponding iron cores and the magnetic steels are on the same axis.
4. The electromagnetic clutch of claim 1 wherein the magnetic steel is a magnetic steel with a low temperature coefficient for avoiding demagnetization and increasing the impact resistance of the electromagnetic clutch, thereby allowing the electromagnetic clutch to work normally under different conditions and temperatures.
5. The electromagnetic clutch of claim 1 wherein the magnetic steel top end face is rectangular, square, triangular or circular;
and the armature plate is provided with a magnetic steel groove, and the magnetic steel is fixed in the magnetic steel groove in a glue pouring or injection molding mode.
6. The electromagnetic clutch of claim 1 wherein the coils are connected by: parallel, series, or grouped series-parallel.
7. The electromagnetic clutch according to claim 1 wherein a damper pad is provided on the yoke for positioning to maintain a gap between the armature plate and the yoke, and for damping and reducing noise.
8. The electromagnetic clutch according to any of claims 1 to 7 wherein the driven member is slidably received on a first shaft and the stationary member is fixed to a second shaft;
a shaft pressing plate is fixed at the top end of the first shaft, and the elastic part is arranged between the driven part and the shaft pressing plate.
9. The electromagnetic clutch according to claim 8 wherein the driven member further includes a movable sleeve gear, the fixed member including a fixed sleeve gear thereon, the movable sleeve gear being in meshing transmission with the fixed sleeve gear;
the fixed cover of yoke is established the fixed tooth cover outside, armature plate rotationally the cover establish the activity tooth cover outside, activity tooth cover can follow armature plate moves in the axial.
10. The electromagnetic clutch of claim 9 wherein the yoke and the fixed gear sleeve are in a clearance fit such that the yoke and the fixed gear sleeve are able to rotate relative to each other such that in the engaged position the fixed gear sleeve and the movable gear sleeve rotate together while the yoke and the armature plate remain stationary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022055894.8U CN213899666U (en) | 2020-09-18 | 2020-09-18 | Electromagnetic clutch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022055894.8U CN213899666U (en) | 2020-09-18 | 2020-09-18 | Electromagnetic clutch |
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| Publication Number | Publication Date |
|---|---|
| CN213899666U true CN213899666U (en) | 2021-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022055894.8U Active CN213899666U (en) | 2020-09-18 | 2020-09-18 | Electromagnetic clutch |
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| CN (1) | CN213899666U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114704562A (en) * | 2022-04-02 | 2022-07-05 | 精进电动科技股份有限公司 | Monostable electromagnetic clutch |
| EP4180683A1 (en) * | 2021-11-11 | 2023-05-17 | Jing-Jin Electric Technologies Co., Ltd. | Bistable electromagnetic clutch |
| US11879505B2 (en) * | 2020-09-18 | 2024-01-23 | Jing-Jin Electric Technologies Co., Ltd | Electromagnetic clutch |
-
2020
- 2020-09-18 CN CN202022055894.8U patent/CN213899666U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11879505B2 (en) * | 2020-09-18 | 2024-01-23 | Jing-Jin Electric Technologies Co., Ltd | Electromagnetic clutch |
| EP4180683A1 (en) * | 2021-11-11 | 2023-05-17 | Jing-Jin Electric Technologies Co., Ltd. | Bistable electromagnetic clutch |
| CN114704562A (en) * | 2022-04-02 | 2022-07-05 | 精进电动科技股份有限公司 | Monostable electromagnetic clutch |
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