CN213546245U - Electromagnetic driving device and shunt release comprising same - Google Patents
Electromagnetic driving device and shunt release comprising same Download PDFInfo
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- CN213546245U CN213546245U CN202022195096.5U CN202022195096U CN213546245U CN 213546245 U CN213546245 U CN 213546245U CN 202022195096 U CN202022195096 U CN 202022195096U CN 213546245 U CN213546245 U CN 213546245U
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Abstract
The utility model provides an electromagnetic drive device and shunt release including this electromagnetic drive device. The electromagnetic driving device comprises a shell, a first coil, a second coil, a permanent magnet, a movable iron core, a first end cover and a second end cover. The first coil and the second coil and the permanent magnet are accommodated in a housing, and the hollow parts of the first coil, the second coil and the permanent magnet together form a longitudinal channel in the housing. The movable iron core is longitudinally divided into a first section, a second section and an intermediate section, the transverse dimension of the intermediate section is larger than that of the first section and the second section, and the movable iron core can be inserted into the longitudinal channel and can be longitudinally displaced relative to the longitudinal channel under the driving of a first electromagnetic force applied by the first coil and a second electromagnetic force applied by the second coil. The electromagnetic driving device with the structure can realize bidirectional driving, and has the characteristics of reducing power consumption and being capable of automatically resetting.
Description
Technical Field
The utility model relates to a drive arrangement especially relates to electromagnetic drive device.
Background
Fig. 1 shows a schematic representation of an electromagnetic drive, for example for a shunt release, according to the prior art. The electromagnetic driving device mainly comprises a shell, a coil inserted into the shell and a movable iron core A inserted into the coil and keeping a certain gap with the coil. The electromagnetic driving device further comprises a permanent magnet C arranged beside the movable iron core in the shell and a pressure spring B arranged between the movable iron core A and the permanent magnet C, wherein one end of the pressure spring B is pressed against the movable iron core A, and the other end of the pressure spring B is pressed against the permanent magnet C. When in use, the movable iron core A has two using states, namely an initial position and a triggering position, and the position shown in figure 1 is the initial position. In the initial position, the permanent magnet C exerts a force F on the plunger A, for example directed to the rightPermanent magnetA thrust F larger than the thrust F exerted by the compression spring B on the movable iron core A and facing to the left sideSpringTherefore, the movable iron core A is kept at the position of attracting the permanent magnet C, and the coil is not electrified at the moment. When the coil is electrified, the coil also applies electromagnetic force F towards the left side to the movable iron coreElectromagnetic fieldAt this time FElectromagnetic field+FSpring>FPermanent magnetThereby the plunger a will move to the left to the activated position.
The electromagnetic drive described above has three disadvantages. First, when the plunger moves from the home position to the left trigger position, it still needs to overcome the force applied to it by the permanent magnet, thereby requiring a greater current to be applied to the coil, increasing the power consumption of the coil. Second, the electromagnetic driving device only includes the initial position shown in fig. 1 and the triggering position where the pressure spring reset movable iron core moves to the left side to the limit at present, and it can only satisfy one-side driving and cannot satisfy the application occasion requiring bidirectional driving. Thirdly, if the movable iron core is expected to return to the initial position from the triggering position, an external force needs to be applied to the movable iron core additionally, and the movable iron core cannot be automatically reset.
Disclosure of Invention
In order to solve the above problems, the present invention provides an electromagnetic driving device, which has a movable iron core having three use positions, i.e., an initial position, a first trigger position and a second trigger position, by arranging a first coil and a second coil on both sides of a permanent magnet, respectively, thereby solving at least one of the above problems, and particularly enabling the electromagnetic driving device to perform a bidirectional driving.
The utility model provides an electromagnetic driving device, it includes shell, first coil, second coil, permanent magnet, moves iron core and first end cover and second end cover. Wherein the housing extends in a longitudinal direction and has open first and second ends; both the first and second coils are wound in a hollow configuration and are designed to be inserted coaxially with respect to the housing into the housing from first and second ends of the housing, respectively; the permanent magnet is designed in a hollow configuration and is arranged coaxially with respect to the housing within the housing between the first coil and the second coil, wherein the hollow portions of the first coil, of the second coil and of the permanent magnet together form a longitudinal channel within the housing; the movable iron core is longitudinally divided into a first section, a second section and an intermediate section between the first section and the second section, the transverse dimension of the intermediate section is designed to be larger than that of the first section and the second section, and the longitudinal dimension of the intermediate section is designed to be larger than the sum of the axial length of the first coil and the axial length of the permanent magnet and the sum of the axial length of the second coil and the axial length of the permanent magnet; the plunger is insertable into the longitudinal channel and is longitudinally displaceable relative to the longitudinal channel when driven; the first end cap is designed for closing a first end of the housing, the second end cap is designed for closing a second end of the housing, a first through hole is formed in the first end cap, a second through hole is formed in the second end cap, at least a part of the first section and at least a part of the second section respectively extend out of the housing through the first through hole and the second through hole, and the first through hole and the second through hole are both designed to not allow the middle section to pass through; wherein the housing, the first end cap and the second end cap are each made of a magnetically conductive material, and the first coil is configured to apply a first electromagnetic force to the plunger when energized to drive the middle section toward the first end cap, and the second coil is configured to apply a second electromagnetic force to the plunger when energized to drive the middle section toward the second end cap. The electromagnetic driving device having the above configuration allows the plunger to have three use positions, i.e., an initial position, a first trigger position, and a second trigger position, whereby the electromagnetic driving device can perform a bidirectional driving function. Meanwhile, the movable iron core does not need to overcome the acting force of the permanent magnet to move, and larger current does not need to be applied to the first coil and the second coil any more, so that the overall energy consumption of the electromagnetic driving device is reduced.
Preferably, the electromagnetic driving device further includes a first stopper and a second stopper, and a first spring and a second spring. The first retaining member is mounted to the portion of the first segment that extends out of the housing and the second retaining member is mounted to the portion of the second segment that extends out of the housing; the first spring is sleeved on the part of the first section extending out of the shell and arranged between the first retaining piece and the first end cover, and the second spring is sleeved on the part of the second section extending out of the shell and arranged between the second retaining piece and the second end cover.
Preferably, the first spring and the second spring are designed to be in a compressed state when the first coil and the second coil are not energized, and the magnitudes of the acting forces respectively applied to the first limiting member and the second limiting member are equal.
Preferably, the second spring is designed to apply a force to the plunger during the movement of the intermediate section toward the first end cap that is smaller than a sum of a force applied to the plunger by the first spring and the first electromagnetic force, and the first spring is designed to gradually release to a free state during the movement of the intermediate section toward the first end cap until abutting against the first end cap.
Preferably, the first spring is designed to apply a force to the plunger during the movement of the middle section toward the second end cap that is smaller than a sum of a force applied to the plunger by the second spring and the second electromagnetic force, and the second spring is designed to gradually release to a free state during the movement of the middle section toward the second end cap until abutting against the second end cap.
Preferably, the first retaining member includes a first lock nut sleeved on an outer peripheral surface of the first segment, and further includes a first gasket disposed between the first lock nut and the first end cap, wherein one end of the first spring is to directly contact the first gasket; the second limiting part comprises a second lock nut sleeved on the outer peripheral surface of the second section and a second gasket arranged between the second lock nut and the second end cover, wherein one end of the second spring is directly contacted with the second gasket.
Preferably, the housing, the permanent magnet, the first coil and the second coil are all in a hollow cylindrical configuration, and the first section, the second section and the middle section are all in a cylindrical configuration, and the three extend coaxially and are integrally formed.
Preferably, the first coil and the second coil are arranged symmetrically to each other with respect to the permanent magnet.
Preferably, the first coil and the second coil are arranged asymmetrically with respect to the permanent magnet.
The utility model also provides an excitation-splitting release, it includes above-mentioned electromagnetic drive device.
Drawings
FIG. 1 is a schematic view of a prior art electromagnetic drive;
fig. 2 is an exploded schematic view of an electromagnetic drive according to the present invention;
fig. 3A-3C are schematic views of three positions of use of an electromagnetic drive according to the present invention.
List of reference numerals
1. A housing; 2. a first coil; 3. a second coil; 4. a permanent magnet; 5. a movable iron core; 51. a first section; 52. a second section; 53. an intermediate section; 6. a first end cap; 61. a first through hole; 7. a second end cap; 71. a second through hole; 8. a first spring; 9. a second spring; 10. a first lock nut; 11. a first gasket; 12. a second lock nut; 13. a second gasket; 15. a longitudinal channel; A. a movable iron core in the prior art; B. compression springs in the prior art; C. permanent magnets in the prior art.
Detailed Description
Referring now to the drawings, illustrative aspects of the disclosed structure will be described in detail. Although the drawings are provided to present embodiments of the invention, the drawings are not necessarily to scale of particular embodiments, and certain features may be exaggerated, minimized, or removed to better illustrate and explain the present disclosure.
Certain directional terms used hereinafter to describe the accompanying drawings should be understood to have their normal meanings and to refer to those directions as they normally relate to when viewing the drawings. Where "longitudinal" refers to the length direction of an object, "transverse" refers to a direction perpendicular to the longitudinal direction, e.g., for a cylinder, transverse refers to its radial direction, and "longitudinal" refers to its axial direction. "left" and "right" refer to the left and right hand sides when viewed at the angles of fig. 3A-3C, and do not refer to the orientation of the device when in actual use.
Fig. 2 shows an exploded view of an electromagnetic drive according to the invention, and fig. 3A-3C show assembled views of the electromagnetic drive. The electromagnetic driving device mainly includes a housing 1, and a first coil 2, a second coil 3, and a permanent magnet 4 to be housed in the housing 1, and further includes a movable iron core 5 partially housed in the housing 1 and partially protruding out of the housing 1, and a first end cap 6 and a second end cap 7 for closing open ends of the housing 1.
Specifically, the housing 1 is designed to extend in its longitudinal direction, having an open first end and an open second end, for the first coil 2, the second coil 3, the permanent magnet 4, and the like to enter the inside of the housing 1. The open ends of the housing 1 are closed by means of a first end cap 6 and a second end cap 7, wherein the first end cap 6 is used to close the first end and the second end cap 7 is used to close the second end. As shown in fig. 2, the first and second end caps 6 and 7 may be detachably coupled to the housing 1 by means of screws or the like, respectively. Meanwhile, the first end cap 6 is further provided with a first through hole 61, the second end cap 7 is further provided with a second through hole 71, and the first through hole 61 and the second through hole 71 are preferably respectively arranged at the central positions of the first end cap 6 and the second end cap 7.
The first coil 2 and the second coil 3 may employ coils wound in a hollow configuration as known in the art, and may be sized to allow insertion of the two into the housing 1 from the first end and the second end of the housing 1, respectively. When the first coil 2 and the second coil 3 are in place in the housing 1, they extend coaxially with respect to the housing 1.
Unlike the prior art, the permanent magnet 4 in the present invention is also designed to have a hollow configuration, which is accommodated in the housing 1 and arranged between the first coil 2 and the second coil 3 within the housing 1. Wherein the skilled person will understand that the three first coil 2, the second coil 3 and the permanent magnet 4 can either be fixedly connected to the housing 1 individually or be accommodated in the housing 1 in close proximity to each other by means of the above mentioned limit of the first end cap 6 and the second end cap 7 by suitable dimensioning. The hollow parts of the first coil 2, the second coil 3 and the permanent magnet 4 form a longitudinal channel 15, and the movable iron core 5 can be accommodated in the longitudinal channel 15.
The plunger 5 can be divided into three sections in its longitudinal direction, see fig. 2, comprising a first section 51, a second section 52 and an intermediate section 53 between the first section 51 and the second section 52. Although not limited, it is understood by those skilled in the art that the plunger may be integrally formed or formed by three segments connected to each other, wherein the movement of any one segment drives the other two segments to perform corresponding movements. For example, with continued reference to fig. 3A, upon assembly, the entire plunger 5 will be inserted into the longitudinal channel 15, wherein the intermediate section 53 will be fully received in the longitudinal channel 15, while at least a portion of the first section 51 may protrude out of the housing 1 by passing through a first through-hole 61 provided in the first end cap 6, and likewise at least a portion of the second section 52 may protrude out of the housing 1 by passing through a second through-hole 71 provided in the second end cap 7. The transverse dimension of the intermediate section 53 is designed to be larger than the transverse dimensions of the first and second sections 51, 52, so that, for example, when the plunger 5 moves in the longitudinal channel 15 towards the left (i.e. when the intermediate section 53 moves towards the first end cap 6), after a certain distance of movement the intermediate section 53 will abut against the first end cap 6 as shown in fig. 3B, thereby preventing the plunger 5 from moving out of the housing 1. In addition, the larger the abutting area of the intermediate section 53 with the first end cap 6 and the second end cap 7, the more favorable it will be to form a complete closed magnetic circuit.
To achieve the above requirements, the first through hole 61 is dimensioned to allow the first section 51 to pass therethrough but not the intermediate section 53 to pass therethrough, and the second through hole 71 is dimensioned to allow the second section 52 to pass therethrough but not the intermediate section 53 to pass therethrough. In addition, although not limited, it will be understood by those skilled in the art that there should be a certain gap between the first through hole 61 and the outer circumferential surface of the first segment 51 to allow the first segment 51 to be displaced relative to the first through hole 61. Similarly, there should be a certain gap between the second through hole 71 and the outer peripheral surface of the second section 52.
The housing 1, the first end cap 6 and the second end cap 7 are made of magnetic conductive material (e.g. pure iron, silicon steel, etc.), so that a complete closed magnetic circuit can be formed in the housing 1, the first end cap 6, the permanent magnet 4 and the movable iron core 5, for example, when only the first coil 2 is energized. This magnetic field may exert a first electromagnetic force towards the left on the plunger 5 to drive the intermediate section 53 towards the first end cap 6. At this point, the first section 51 will extend more out of the housing 1 until the intermediate section 53 abuts the first end cap 6, see fig. 3B. The position of the plunger 5 in fig. 3B is referred to herein as the first trigger position. In the first, activated position, the electromagnetic drive can drive the components, for example, on the left side of the device, by means of the first section 51 protruding from the housing 1.
Similarly, in the case where only the second coil 3 is energized, a closed magnetic circuit can be formed within the housing 1, the second end cap 7, the permanent magnet 4, and the plunger 5. This magnetic field may apply a second electromagnetic force to the plunger 5 to the right to drive the intermediate section 53 towards the second end cap 7. At this point, the second section 52 will protrude more out of the housing 1 until the intermediate section 53 abuts against the second end cap 7, see fig. 3C. The position of the plunger 5 in fig. 3C is referred to herein as the second trigger position. In the second trigger position, the electromagnetic drive can drive the component located, for example, on the right-hand side of the device by means of the second section 52 protruding out of the housing 1.
Wherein the longitudinal dimension of the intermediate section is designed to be greater than both the sum of the axial length of the first coil and the axial length of the permanent magnet and the sum of the axial length of the second coil and the axial length of the permanent magnet in order to form a complete closed magnetic circuit.
The position of the plunger 5 in fig. 3A, in which the first coil 2 and the second coil 3 are not energized, is referred to herein as the initial position, and the intermediate section 53 of the plunger 5 is in a neutral state.
In conclusion, according to the utility model discloses a move iron core 5 and have three application position, initial position, first trigger position and second trigger position promptly, it has improved the functionality compared in the iron core 5 that moves that only has two application positions among the prior art, can realize both-way drive, has bigger range of application.
In addition, in this context, the action of the permanent magnet 4 is only to assist in forming a complete closed magnetic circuit, which does not exert a longitudinal force on the plunger 5, and thus does not have to move against the force of the permanent magnet 4 during the movement of the plunger 5 from the position shown in fig. 3A to the position shown in fig. 3B or 3C, which reduces the magnitude of the current applied to the coil, and thus reduces the power consumption.
In order to realize making movable iron core 5 reply to initial position from first trigger position or second trigger position department automatically, the utility model also provides a spring assembly. Specifically, a first stopper is provided on a portion of the first section 51 that protrudes out of the housing 1, and a second stopper is provided on a portion of the second section 52 that protrudes out of the housing 1. The spring assembly may comprise a first spring 8 and a second spring 9, wherein the first spring 8 is sleeved on the portion of the first section 51 extending out of the housing 1 and the second spring 9 is sleeved on the portion of the second section 52 extending out of the housing 1. Specifically, the first spring 8 is disposed between the first stopper and the first end cap 6, and the second spring 9 is disposed between the second stopper and the second end cap 7.
Preferably, the first retaining member may include a first lock nut 10 fitted to an outer circumferential surface of the first section 51 and a first washer 11 disposed between the first lock nut 10 and the first end cap 6. The second retaining member may include a second lock nut 12 fitted over the outer peripheral surface of the second section 52 and a second washer 13 disposed between the second lock nut 12 and the second end cap 7. At this time, one end of the first spring 8 will directly contact the first pad 11 and one end of the second spring 9 will directly contact the second pad 13.
In order to maintain the plunger in a neutral state when the plunger 5 is in the initial position shown in fig. 3A, the first spring 8 and the second spring 9 should be designed to be both in a compressed state. At this time, the acting force exerted on the movable iron core 5 by the first spring 8 is equal to but opposite to the acting force exerted on the movable iron core 5 by the second spring 9, so that the movable iron core 5 is located at a longitudinally central position relative to the housing 1.
Referring to fig. 3B, when the first coil 2 is energized, i.e. the plunger 5 moves toward the left side under the driving of the first electromagnetic force, the second spring 9 will be compressed continuously due to the distance between the second lock nut 12 and the second end cap 7 being reduced, and thus the force toward the right side applied to the plunger 5 by the second spring 9 will gradually increase. However, in order to achieve a movement of the plunger 5 to the left until the intermediate section 53 abuts against the first end cap 6, the force exerted by the second spring 9 on the plunger 5 to the right in the process should be smaller than the sum of the first electromagnetic force exerted by the first coil 2 on the plunger 5 to the left and the force exerted by the first spring 8 on the plunger 5 to the left. During the movement of the intermediate section 53 towards the first end cap 6 until abutting against the first end cap 6, the distance between the first lock nut 10 and the first end cap 6 will gradually increase and the first spring 8 will gradually be released to a free state. When the energization of the first coil 2 is stopped, the plunger 5 can be automatically returned to the initial position of fig. 3A by the urging force of the second spring 9 toward the right side.
Similarly, referring to fig. 3C, when only the second coil 3 is energized, that is, during the movement of the plunger 5 toward the right side by the second electromagnetic force, the first spring 8 will be continuously compressed due to the decrease in the distance between the first lock nut 10 and the first end cap 6, and thus the force applied to the plunger 5 toward the left side by the first spring 8 will gradually increase. However, in order to realize the movement of the plunger 5 to the right until the intermediate section 53 abuts against the second end cap 7, the force applied to the plunger 5 by the first spring 8 to the left in the process should be smaller than the sum of the second electromagnetic force applied to the plunger 5 by the second coil 3 to the right and the force applied to the plunger by the second spring 9 to the right. During the movement of the intermediate section 53 towards the second end cap 7 until abutting against the second end cap 7, the distance between the second lock nut 12 and the second end cap 7 will gradually increase and the second spring 9 will gradually be released to a free state. Thus, when the energization of the second coil 3 is stopped, the plunger 5 can be returned to its initial position by being driven by the leftward urging force of the first spring 8.
Thus, by means of the first spring 8 and the second spring 9, it is achieved that the plunger 5 can automatically return from the first or second triggering position to the initial position when the first coil 2 or the second coil 3 is de-energized.
It is preferred here that the housing 1, the permanent magnet 4, the first coil 2 and the second coil 3 are all of hollow cylindrical configuration. However, it will be understood by those skilled in the art that the housing 1, the permanent magnet 4, the first coil 2 and the second coil 3 may also have other shapes than a cylindrical shape, such as a square or rectangular shape, as long as the permanent magnet 4, the first coil 2 and the second coil 3 can be coaxially arranged within the housing 1 and together form one longitudinal channel 15.
In addition, it is also preferable that the first coil 2 and the second coil 3 are arranged symmetrically with respect to the permanent magnet 4. The same coil can be used for the first coil 2 and the second coil 3. Of course, it will be understood by those skilled in the art that the first coil 2 and the second coil 3 may also be arranged asymmetrically with respect to the permanent magnet 4, for example, the longitudinal length of the first coil 2 may be larger than the longitudinal length of the second coil 3, which may be self-adjusting according to actual requirements. Likewise, the first spring 8 and the second spring 9 may be symmetrical or asymmetrical with respect to the arrangement of the permanent magnet 4.
In addition, in this context, the first section 51, the second section 52 and the middle section 53 of the plunger 5 are also preferably in the configuration of a circular cylinder, preferably with their longitudinal axes coinciding with one another and being in one piece. However, it will be understood by those skilled in the art that the outer peripheral surfaces of the first section 51, the second section 52 and the middle section 53 of the plunger 5 may be designed to have a cylindrical or rectangular shape, for example, without affecting the function thereof.
The electromagnetic drive device according to the present disclosure is applicable to shunt releases, and also to switching circuit breakers and air circuit breakers.
Additionally, the utility model also provides a shunt release, it includes above-mentioned electromagnetic drive equipment.
Claims (10)
1. An electromagnetic drive device, comprising:
a housing (1) extending in a longitudinal direction and having a first end and a second end which are open;
a first coil (2) and a second coil (3), both wound in a hollow configuration and designed to be inserted coaxially with respect to the casing (1) inside the casing (1) from a first end and a second end, respectively, of the casing (1);
a permanent magnet (4) designed in a hollow configuration and arranged coaxially within the housing (1) with respect to the housing (1) between the first coil (2) and the second coil (3), wherein the hollow portions of the first coil (2), of the second coil (3) and of the permanent magnet (4) together form a longitudinal channel (15) within the housing (1);
a plunger (5) divided longitudinally into a first section (51), a second section (52) and an intermediate section (53) located between the first section (51) and the second section (52), the intermediate section (53) having a transverse dimension designed to be greater than the transverse dimensions of the first section (51) and the second section (52), the intermediate section (53) having a longitudinal dimension designed to be greater than the sum of the axial length of the first coil (2) and the axial length of the permanent magnet (4) and the sum of the axial length of the second coil (3) and the axial length of the permanent magnet (4), the plunger (5) being inserted in the longitudinal channel (15) and being displaceable relative to the longitudinal channel (15) when driven;
a first end cap (6) and a second end cap (7), wherein the first end cap (6) is designed to close a first end of the housing (1), the second end cap (7) is designed to close a second end of the housing (1), a first through hole (61) is opened on the first end cap (6), a second through hole (71) is opened on the second end cap (7), at least a part of the first section (51) and at least a part of the second section (52) protrude out of the housing (1) by means of the first through hole (61) and the second through hole (71), respectively, the first through hole (61) and the second through hole (71) are both designed not to allow the middle section (53) to pass therethrough;
wherein the housing (1), the first end cap (6) and the second end cap (7) are all made of a magnetically conductive material, and the first coil (2) is designed to apply a first electromagnetic force to the plunger (5) when energized to drive the intermediate section (53) towards the first end cap (6), and the second coil (3) is designed to apply a second electromagnetic force to the plunger (5) when energized to drive the intermediate section (53) towards the second end cap (7).
2. The electromagnetic drive of claim 1, further comprising:
a first retaining member mounted to the portion of the first section that extends out of the housing and a second retaining member mounted to the portion of the second section that extends out of the housing;
the first spring is sleeved on the part of the first section extending out of the shell and arranged between the first limiting piece and the first end cover, and the second spring is sleeved on the part of the second section extending out of the shell and arranged between the second limiting piece and the second end cover.
3. The electromagnetic driving device according to claim 2, wherein the first spring and the second spring are designed to be in a compressed state when the first coil and the second coil are not energized and apply the same amount of force to the first stopper and the second stopper, respectively.
4. The electromagnetic driving device according to claim 3, wherein the second spring is designed to apply a force to the plunger during the movement of the intermediate section toward the first end cap that is smaller than a sum of a force applied to the plunger by the first spring and the first electromagnetic force, and the first spring is designed to gradually release to a free state during the movement of the intermediate section toward the first end cap until abutting against the first end cap.
5. The electromagnetic driving device according to claim 4, wherein the first spring is designed to apply a force to the plunger during the movement of the intermediate section toward the second end cap that is smaller than a sum of a force applied to the plunger by the second spring and the second electromagnetic force, and the second spring is designed to gradually release to a free state during the movement of the intermediate section toward the second end cap until abutting against the second end cap.
6. The electromagnetic drive of claim 2, wherein the first retaining member comprises a first lock nut that is sleeved onto the outer peripheral surface of the first segment, and further comprising a first washer disposed between the first lock nut and the first end cap, wherein one end of the first spring is to directly contact the first washer; the second limiting part comprises a second lock nut sleeved on the outer peripheral surface of the second section and a second gasket arranged between the second lock nut and the second end cover, wherein one end of the second spring is directly contacted with the second gasket.
7. The electromagnetic drive of claim 1 wherein said housing, said permanent magnet, said first coil and said second coil are all hollow cylindrical in configuration, said first section, said second section and said intermediate section are all cylindrical in configuration, extending coaxially and integrally formed therewith.
8. The electromagnetic driving device according to claim 1, wherein the first coil and the second coil are arranged symmetrically to each other with respect to the permanent magnet.
9. The electromagnetic drive of claim 1, wherein the first coil and the second coil are asymmetrically disposed about the permanent magnet.
10. A shunt release comprising an electromagnetic drive according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022195096.5U CN213546245U (en) | 2020-09-30 | 2020-09-30 | Electromagnetic driving device and shunt release comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022195096.5U CN213546245U (en) | 2020-09-30 | 2020-09-30 | Electromagnetic driving device and shunt release comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213546245U true CN213546245U (en) | 2021-06-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022195096.5U Active CN213546245U (en) | 2020-09-30 | 2020-09-30 | Electromagnetic driving device and shunt release comprising same |
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| Country | Link |
|---|---|
| CN (1) | CN213546245U (en) |
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2020
- 2020-09-30 CN CN202022195096.5U patent/CN213546245U/en active Active
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