CN212695098U - Electromagnetic device - Google Patents

Electromagnetic device Download PDF

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Publication number
CN212695098U
CN212695098U CN202021703539.0U CN202021703539U CN212695098U CN 212695098 U CN212695098 U CN 212695098U CN 202021703539 U CN202021703539 U CN 202021703539U CN 212695098 U CN212695098 U CN 212695098U
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China
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iron core
movable iron
assembly
electromagnetic device
circuit board
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CN202021703539.0U
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徐大胜
秦治斌
洪传生
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Zhejiang Chint Electrics Co Ltd
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Zhejiang Chint Electrics Co Ltd
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Abstract

The utility model relates to the field of low-voltage electrical appliances, in particular to an electromagnetic device, which comprises a coil assembly, a static iron core, a movable iron core assembly and a spring, wherein the static iron core and the movable iron core assembly are respectively arranged in the middle of the coil assembly; the two ends of the movable iron core component are respectively a movable iron core detection end and a movable iron core driving end; the electromagnetic device also comprises a detection structure in non-contact fit with the detection end of the movable iron core; when the movable iron core assembly is located at the initial position, the detection structure outputs a first signal; when the movable iron core assembly moves to the action position after acting, the detection structure outputs a second signal after the movable iron core detection end moves relative to the detection structure; the utility model discloses electromagnetic means, it detects the position that the structure can real-time detection move the iron core subassembly.

Description

Electromagnetic device
Technical Field
The utility model relates to a low-voltage apparatus field, concretely relates to electromagnetic device.
Background
The shunt release and the undervoltage release are both important control components of the circuit breaker; the shunt release can realize the remote brake-separating function of the circuit breaker, the undervoltage release can realize voltage protection, and the circuit breaker is driven to break a circuit when the system voltage is undervoltage.
The service life is an important parameter of the shunt release and the undervoltage release, and the current service life and the residual use times of circuit breaker accessories (including undervoltage, shunt release and closing electromagnet) need to be recorded and fed back in real time according to the relevant technical requirements of the Internet of things; however, the existing shunt release and undervoltage release cannot meet the above requirements.
Disclosure of Invention
An object of the utility model is to overcome prior art's defect, provide an electromagnetic means, its detection structure can real-time detection move the position of iron core subassembly.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an electromagnetic device comprises a coil assembly 3, a static iron core 6, a movable iron core assembly 2 and a spring 5, wherein the static iron core 6 and the movable iron core assembly 2 are respectively arranged in the middle of the coil assembly 3, and two ends of the spring are respectively in limit fit with the static iron core 6 and the movable iron core assembly 2; the two ends of the movable iron core component 2 are respectively a movable iron core detection end and a movable iron core driving end; the electromagnetic device also comprises a detection structure 9 which is in non-contact fit with the detection end of the movable iron core;
when the movable iron core assembly 2 is located at the initial position, the detection structure 9 outputs a first signal; when the movable iron core assembly 2 moves to the action position after acting, the detection structure 9 outputs a second signal after the detection end of the movable iron core moves relative to the detection structure 9.
Preferably, when the movable iron core assembly 2 is located at the initial position, the detection end of the movable iron core is opposite to the detection structure 9; when the movable iron core assembly 2 moves to the action position after the action, the detection end of the movable iron core moves to one side of the detection structure 9.
Preferably, when the movable iron core assembly 2 is located at the initial position, the length of the part of the movable iron core detection end protruding to one side of the detection structure 9 is L0(ii) a The length of an air gap between the movable iron core assembly 2 and the static iron core 6 is L1;L0≤L1
When the movable iron core assembly 2 is located at the action position, the detection end of the movable iron core is located at the other side of the detection structure 9.
Preferably, the detection structure 9 is a photoelectric switch; when the movable iron core assembly 2 is located at the initial position, the detection end of the movable iron core is opposite to the photoelectric switch, and the photoelectric switch is switched off or switched on; when the movable iron core assembly 2 moves to the action position after action, the detection end of the movable iron core moves to one side of the photoelectric switch, and the photoelectric switch is switched on or off.
Preferably, the detection structure 9 is a magnetic sensor; after the movable iron core assembly 2 moves from the initial position to the action position, the magnetic field intensity of the environment where the magnetic sensing element is located is changed.
Preferably, the magnetic sensing element is a hall element.
Preferably, the electromagnetic device further comprises a circuit board 7, and the detection structure 9 is connected with the circuit board 7.
Preferably, the circuit board 7 includes a first circuit board portion 70 disposed on one radial side of the coil assembly 3, and the coil assembly 3 further includes a splicing pin 8 in plug-in fit with the first circuit board portion 70.
Preferably, the electromagnetic device further comprises a housing 1, the coil assembly 3 and the circuit board 7 are respectively and fixedly arranged on the housing 1, the circuit board 7 comprises a first circuit board portion 70 and a second circuit board portion 71, the first circuit board portion 70 is arranged on one radial side of the coil assembly 3, the second circuit board portion 71 is arranged on the outer side of one end of the coil assembly 3, and a circuit board opening 710 for the detection end of the movable iron core to pass through is arranged on the second circuit board portion 71; the detection structure 9 is arranged on the second portion 71 of the circuit board and located on the peripheral side wall of the circuit board opening 710, and the detection structure 9 and the coil assembly 3 are located on two sides of the second portion 71 of the circuit board respectively.
Preferably, the electromagnetic device is a shunt release; when the movable iron core assembly 2 is located at the initial position, the spring 5 is relaxed, and the movable iron core assembly 2 is separated from the static iron core 6; when the movable iron core assembly 2 is located at the action position, the spring 5 is compressed, and the movable iron core assembly 2 is attracted with the static iron core 6.
Preferably, the movable iron core assembly 2 comprises a movable iron core 20 and an ejector rod 21 which act synchronously, one end of the movable iron core 20 is a movable iron core detection end, the other end of the movable iron core 20 is connected with one end of the ejector rod 21, and the other end of the ejector rod 21 passes through the static iron core 6 and then serves as a movable iron core driving end; the spring 5 is sleeved on the ejector rod 21, and two ends of the spring are respectively in limit fit with the movable iron core assembly 2 and the static iron core 6.
Preferably, the movable iron core assembly 2 comprises a movable iron core 20 and a push rod 21 which act synchronously, one end of the push rod 21 passes through the movable iron core 20 and then serves as a movable iron core detection end, and the other end of the push rod 21 passes through the static iron core 6 and then serves as a movable iron core driving end; the spring 5 is sleeved on the ejector rod 21, and two ends of the spring are respectively in limit fit with the movable iron core assembly 2 and the static iron core 6.
Preferably, the electromagnetic device is an undervoltage release; when the movable iron core assembly 2 is located at the initial position, the spring 5 is compressed, and the movable iron core assembly 2 is attracted with the static iron core 6; when the movable iron core assembly 2 is located at the action position, the spring 5 is relaxed, and the movable iron core assembly 2 is separated from the static iron core 6.
Preferably, the movable iron core assembly 2 comprises a movable iron core 20 and a guide rod 21a which act synchronously, one end of the movable iron core 20 is used as a movable iron core driving end, the other end of the movable iron core 20 is connected with one end of the guide rod 21a, and the other end of the guide rod 21a passes through the static iron core 6 and then is used as a movable iron core detecting end; the spring 5 is sleeved on the guide rod 21a, and two ends of the spring are respectively in limit fit with the movable iron core assembly 2 and the static iron core 6.
The utility model discloses electromagnetic means, it detects structure 9, when moving iron core assembly 2 and being in initial position and action position respectively, can export first signal and second signal respectively to realized instruction and count to moving iron core assembly 2 positions, the user of being convenient for masters electromagnetic means's operating condition and remaining life in real time.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of the electromagnetic device of the present invention, the electromagnetic device is a shunt release, and the movable iron core assembly and the stationary iron core are in a separated state;
fig. 2 is a schematic perspective view of a first embodiment of the electromagnetic device of the present invention;
FIG. 3 is a schematic view of the assembly structure of the circuit board, the detecting structure and the detecting mechanism mounting plate of the present invention;
fig. 4 is a schematic structural diagram of the movable iron core of the first embodiment of the electromagnetic device of the present invention;
fig. 5 is a schematic structural diagram of the first embodiment of the electromagnetic device of the present invention, in which the movable iron core assembly and the stationary iron core are in an attraction state;
fig. 6 is a schematic structural diagram of a second embodiment of the electromagnetic device according to the present invention, in which the electromagnetic device is a separation release, and the movable iron core assembly and the stationary iron core are in a separated state;
fig. 7 is a schematic structural diagram of a movable iron core of a second embodiment of the electromagnetic device of the present invention;
fig. 8 is a schematic structural view of a push rod of a second embodiment of the electromagnetic device of the present invention;
fig. 9 is a schematic structural diagram of a second embodiment of the electromagnetic device of the present invention, in which the movable iron core assembly and the stationary iron core are in an attraction state;
fig. 10 is a schematic structural diagram of a third embodiment of the electromagnetic device of the present invention, in which the electromagnetic device is an under-voltage release, and the movable iron core assembly and the stationary iron core are in an attraction state;
fig. 11 is a schematic structural view of a guide bar of a third embodiment of the electromagnetic device of the present invention;
fig. 12 is a schematic structural view of a stationary core of a third embodiment of the electromagnetic device of the present invention;
fig. 13 is a schematic structural diagram of a third embodiment of the electromagnetic device of the present invention, in which the movable core assembly and the stationary core are in a separated state.
Detailed Description
The following description will further describe the electromagnetic device according to the present invention with reference to the embodiments shown in fig. 1-13. The electromagnetic device of the present invention is not limited to the description of the following embodiments.
The utility model discloses an electromagnetic device, which comprises a coil component 3, a static iron core 6, a movable iron core component 2 and a spring 5, wherein the static iron core 6 and the movable iron core component 2 are respectively arranged in the middle of the coil component 3, and the two ends of the spring are respectively in limit fit with the static iron core 6 and the movable iron core component 2; the two ends of the movable iron core component 2 are respectively a movable iron core detection end and a movable iron core driving end; the electromagnetic device also comprises a detection structure 9 which is in non-contact fit with the detection end of the movable iron core; when the movable iron core assembly 2 is located at the initial position, the detection structure 9 outputs a first signal; the movable iron core assembly 2 moves to an action position after acting, and the detection structure 9 outputs a second signal after the movable iron core detection end moves relative to the detection structure 9.
The utility model discloses electromagnetic means, it detects structure 9, when moving iron core assembly 2 and being in initial position and action position respectively, can export first signal and second signal respectively to realized instruction and count to moving iron core assembly 2 positions, the user of being convenient for masters electromagnetic means's operating condition and remaining life in real time.
Preferably, as shown in fig. 1, 6 and 10, when the movable iron core assembly 2 is located at the initial position, the detection end of the movable iron core is opposite to the detection structure 9; as shown in fig. 5, 9 and 13, when the movable iron core assembly 2 moves to the operating position after operating, the movable iron core detection end moves to the side of the detection structure 9. Further, as shown in fig. 1, 6, 10 and 13, when the plunger assembly 2 is located at the initial position, the length of the portion of the plunger detecting end protruding to the side of the detecting structure 9 is L0(ii) a The length of an air gap between the movable iron core assembly (2) and the static iron core 6 is L1;L0≤L1. Further, as shown in fig. 1, 6, 10 and 13, when the movable iron core assembly 2 is located at the action position, the movable iron core detection end is located at the other side of the detection structure 9. The above structure can ensure that the detection structure 9 outputs different signals when the movable iron core assembly 2 is located at the initial position and the action position.
Preferably, the detection structure 9 is a photoelectric switch; when the movable iron core assembly 2 is located at the initial position, the detection end of the movable iron core is opposite to the photoelectric switch, and the photoelectric switch is switched off or switched on; when the movable iron core assembly 2 moves to the action position after action, the detection end of the movable iron core moves to one side of the photoelectric switch, and the photoelectric switch is switched on or off. The relative position of the movable iron core assembly 2 and the detection structure 9 is changed, so that the detection structure 9 is switched between a connection state and a disconnection state, and the first signal and the second signal correspond to the connection state and the disconnection state, thereby realizing the indication of the position of the movable iron core assembly 2.
Preferably, the detection structure 9 is a magnetic sensor; after the movable iron core assembly 2 moves from the initial position to the action position, the magnetic field intensity of the environment where the magnetic sensing element is located is changed. Further, the detection structure 9 is a hall element. The change of the relative position of the movable iron core assembly 2 and the detection structure 9 causes the change of the magnetic field intensity of the environment where the magnetic sensitive element is located, the signal intensity or the numerical value output by the magnetic sensitive element also changes correspondingly, once the absolute value of the difference value of the first signal and the second signal exceeds a set threshold value, the movable iron core assembly 2 is judged to move from the initial position to the action position, and therefore the indication of the position of the movable iron core assembly 2 is realized.
Preferably, as shown in fig. 1, 5, 6, 9, 10, and 13, the electromagnetic device of the present invention further includes a circuit board 7, and the detection structure 9 is connected to the circuit board 7.
The electromagnetic device of the present invention will be further described with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, 5, 6, 9, 10, and 13, the electromagnetic device of the present invention includes a coil assembly 3, a stationary core 6, a movable core assembly 2, a spring 5, and a detection structure 9, wherein the stationary core 6 and the movable core assembly 2 are respectively disposed at the middle of the coil assembly 3, the spring 5 is respectively in limit fit with the stationary core 6 and the movable core assembly 2 at two ends thereof; the two ends of the movable iron core component 2 are respectively a movable iron core detection end and a movable iron core driving end, and the movable iron core detection end is in non-contact fit with the detection structure 9; when the movable iron core assembly 2 is located at the initial position, the detection structure 9 outputs a first signal; when the movable iron core assembly 2 moves to the action position after acting, the detection structure 9 outputs a second signal after the detection end of the movable iron core moves relative to the detection structure 9. Further, as shown in fig. 1, 5, 6, 9, 10, and 13, when the movable iron core assembly 2 is located at the initial position, the detection end of the movable iron core is opposite to the detection structure 9; when the movable iron core assembly 2 moves to the action position after the action, the detection end of the movable iron core moves to one side of the detection structure 9. Further, as shown in fig. 1, 5, 6, 9, 10, and 13, when the detecting end of the movable iron core is opposite to the detecting structure 9, the connection line between the detecting end and the detecting structure is perpendicular to the moving direction of the movable iron core assembly 2.
Preferably, as shown in fig. 1, 6, 10 and 13, when the plunger assembly 2 is located at the initial position, the length of the portion of the plunger detecting end protruding to the side of the detecting structure 9 is L0(ii) a The length of an air gap between the movable iron core assembly 2 and the static iron core 6 is L1;L0≤L1. Further, as shown in fig. 1, 6, 10 and 13, when the movable iron core assembly 2 is located at the action position, the movable iron core detection end is located at the other side of the detection structure 9.
Specifically, as shown in fig. 1, 6 and 10, the movable iron core assembly 2 is located at an initial position, and the detection end of the movable iron core is opposite to the detection structure 9 in the horizontal direction; as shown in fig. 5, 9 and 13, the plunger assembly 2 moves vertically downward after being actuated, so that the plunger detection end moves to the position below the detection structure 9. Further, as shown in fig. 1, 6, 10 and 13, when the plunger assembly 2 is located at the initial position, the length of the portion of the plunger detecting end protruding out of the upper side of the detecting structure 9 is L0(ii) a The length of an air gap between the movable iron core component 2 and the static iron core 6 is L1;L0≤L1
Detect structure 9 and can realize through multiple mode, the utility model discloses an electromagnetic device preferably adopts following two kinds of modes:
the first method is as follows: as shown in fig. 1, 5, 6, 9, 10, and 13, the detecting structure 9 is a photoelectric switch; when the movable iron core assembly 2 is located at the initial position, the detection end of the movable iron core is opposite to the photoelectric switch, and the photoelectric switch is switched off or switched on; when the movable iron core assembly 2 moves to the action position after action, the detection end of the movable iron core moves to one side of the photoelectric switch, and the photoelectric switch is switched on or off.
Specifically, as shown in fig. 1, 5, 6, 9, 10, and 13, the detection structure 9 includes two oppositely disposed photoelectric switches; when the movable iron core assembly 2 is located at the initial position, the detection end of the movable iron core is inserted between the two photoelectric switches, and the photoelectric switches are disconnected and do not output signals, namely, first signals are output; the movable iron core component 2 moves downwards to the lower part of the two photoelectric switches after acting, and the photoelectric switches are conducted and output conducting signals, namely, second signals are output. It should be noted that, when the detection structure 9 is a photoelectric switch, the specific number of the photoelectric switches is determined according to the type thereof, which is a conventional technical means of those skilled in the art, and is not described herein again.
The second method comprises the following steps: the detection structure 9 is a magnetic sensing element; after the movable iron core assembly 2 moves from the initial position to the action position, the magnetic field intensity of the environment where the magnetic sensing element is located is changed. Further, the detection structure 9 is a hall element.
Specifically, the detection structure 9 is a hall voltage sensor, and after the movable iron core assembly 2 moves from the initial position to the action position, the magnetic field strength of the environment where the hall voltage sensor is located changes significantly, so that the induced electromotive force of the hall voltage sensor also changes significantly, that is, the position change of the movable iron core assembly 2 and the change of the working state of the electromagnetic device are reflected. Of course, the detection structure 9 may also be a hall current sensor, and after the movable iron core assembly 2 moves from the initial position to the action position, the induced current of the hall current sensor also changes significantly, that is, the position change of the movable iron core assembly 2 and the change of the working state of the electromagnetic device are reflected.
Preferably, as shown in fig. 1, 5, 6, 9, 10, and 13, the electromagnetic device of the present invention further includes a circuit board 7, wherein the detecting structure 9 is connected to the circuit board 7, and transmits the first signal and the second signal to the circuit board 7. Further, the electromagnetic coil of the coil assembly 3 is also connected with the circuit board 7 to obtain working power.
Preferably, as shown in fig. 1, 5, 6, 9, 10, and 13, the circuit board 7 includes a first circuit board portion 70, the first circuit board portion 70 is disposed on a radial side of the coil assembly 3, and the coil assembly 3 further includes a pin 8 that is inserted into and engaged with the circuit board 7. Further, the detection structure 9 and the electromagnetic coil of the coil assembly 3 are respectively connected with the circuit board 7 through the split pin 8.
Specifically, as shown in fig. 1, 5, 6, 9, 10, and 13, the first portion 70 of the circuit board is disposed on the left side of the coil assembly 3, the extending direction of the assembling pin 8 is perpendicular to the axial direction of the coil assembly 3, one end of the assembling pin 8 is connected to the coil assembly 3, and the other end is in plugging fit with the first portion 70 of the circuit board.
Preferably, as shown in fig. 1, 5, 6, 9, 10, and 13, the electromagnetic device of the present invention further includes a housing 1, the coil assembly 3 and the circuit board 7 are respectively fixed on the housing 1, the circuit board 7 further includes a second circuit board portion 71, and the second circuit board portion 71 is disposed outside one end of the coil assembly 3; the detection structure 9 is arranged on the second portion 71 of the circuit board, and the detection structure 9 and the coil assembly 3 are respectively positioned on two sides of the second portion 71 of the circuit board. Further, as shown in fig. 1-3, 6, 9, 10, and 13, the second portion 71 of the circuit board is provided with a circuit board opening 710 through which the detection end of the movable iron core passes; the detection structure 9 is disposed on the second portion 71 of the circuit board and located on the peripheral sidewall of the circuit board opening 710.
Preferably, as shown in fig. 1, 5, 6, 9, 10 and 13, when the movable iron core assembly 2 is located at the operating position, the movable iron core detection end and the detection structure 9 are located at two sides of the second circuit board portion 71.
Specifically, as shown in fig. 1, 5, 6, 9, 10, and 13, the circuit board 7 is disposed on the left side of the coil assembly 3, the second portion 71 of the circuit board is disposed on the upper side of the upper end of the coil assembly 3, the detecting structure 9 is disposed on the upper side of the second portion 71 of the circuit board, and when the movable iron core assembly 2 is located at the actuating position, the detecting end of the movable iron core and the detecting structure 9 are respectively located on the lower side and the upper side of the second portion 71 of the circuit board.
Preferably, as shown in fig. 1, 5, 6, 9, 10, 13, is an embodiment of the coil assembly 3: the coil component 3 comprises a coil framework 30, and a first electromagnetic coil 31 and a second electromagnetic coil 32 which are respectively sleeved at two ends of the outside of the coil framework 30; the first electromagnetic coil 31 and the second electromagnetic coil 32 are connected in series; the middle part of the coil framework 31 is provided with a framework installation cavity extending along the axial direction of the coil framework. Furthermore, one end of the assembling needle 8 is fixedly arranged on the coil framework 30.
As shown in fig. 1-5, a first embodiment of the electromagnetic device of the present invention is shown.
As shown in fig. 1-5, the electromagnetic device of the first embodiment is a shunt release; as shown in fig. 1, when the movable iron core assembly 2 is located at the initial position, the spring 5 is relaxed, and the movable iron core assembly 2 is separated from the stationary iron core 6; as shown in fig. 5, when the movable iron core assembly 2 is located at the action position, the spring 5 is compressed, and the movable iron core assembly 2 is attracted to the stationary iron core 6.
Preferably, as shown in fig. 1 and 5, the movable iron core assembly includes a movable iron core 20 and a push rod 21 which act synchronously, one end of the movable iron core 20 is a movable iron core detection end, the other end of the movable iron core is connected with one end of the push rod 21, and the other end of the push rod 21 passes through the static iron core 6 and then serves as a movable iron core driving end; the spring 5 is sleeved on the ejector rod 21, and two ends of the spring are respectively in limit fit with the movable iron core assembly 2 and the static iron core 6.
Preferably, as shown in fig. 1 and 5, the stationary core 6 is disposed at one end of a bobbin installation cavity of the coil assembly 3, and the movable core 20 is slidably disposed at the other end of the bobbin installation cavity. Further, as shown in fig. 1 and 5, the electromagnetic device of the present invention further includes a movable iron core guiding position-limiting member 40 coaxially disposed with the movable iron core assembly 2, the movable iron core guiding position-limiting member 40 is disposed between the movable iron core assembly 2 and the coil frame 30, and the inner diameter of the movable iron core guiding position-limiting member 40 matches with the outer diameter of the movable iron core 20.
Specifically, as shown in the directions of fig. 1 and 5, the static iron core 6 is fixedly arranged at the lower end of the framework installation cavity, and the movable iron core 20 is slidably arranged at the upper end of the framework installation cavity; the upper end of the movable iron core 20 is a movable iron core detection end, the lower end of the movable iron core 20 is connected with the upper end of the ejector rod 21, and the lower end of the ejector rod 21 penetrates through the static iron core 6 and then serves as a movable iron core driving end; the movable iron core guiding limiting piece 40 is arranged at the upper end of the framework installation cavity and is positioned between the movable iron core 20 and the coil framework 30.
Preferably, as shown in fig. 1 and 4, is a first embodiment of the plunger assembly 2: the movable iron core assembly 2 comprises a movable iron core 20 and a mandril 21; the movable iron core 20 comprises a first cylindrical part 201, a second cylindrical part 202 and a third cylindrical part 203 which are coaxially arranged in sequence, the outer diameters of the first cylindrical part 201, the second cylindrical part 202 and the third cylindrical part 203 are sequentially reduced, an ejector rod assembly groove matched with the ejector rod 21 is formed in the middle of the first cylindrical part 201, the outer diameter of the second cylindrical part 202 is matched and matched with the inner diameter of the movable iron core guide limiting part 40, and the third cylindrical part 203 serves as a movable iron core detection end; the ejector rod 21 comprises an ejector rod first part 210 and an ejector rod second part 211 which are coaxially arranged in sequence, the outer diameter of the ejector rod first part 210 is larger than that of the ejector rod second part 211, the ejector rod first part 210 is matched with the ejector rod assembling groove, one end of the ejector rod second part 211 is connected with the ejector rod first part 210, and the other end of the ejector rod second part 211 penetrates through the static iron core 6 to serve as a movable iron core driving end.
Preferably, as shown in fig. 1, the stationary iron core 6 is further provided with a stationary iron core spring limiting groove and a stationary iron core through hole for the ejector rod 21 to pass through, the stationary iron core spring limiting groove and the stationary iron core through hole are coaxially and sequentially arranged, and the inner diameter of the stationary iron core spring limiting groove is larger than that of the stationary iron core through hole; and the spring 5 is sleeved on the second part of the ejector rod, and two ends of the spring are respectively in limit fit with the first part of the ejector rod and the static iron core spring limiting groove.
It should be noted that the electromagnetic device of this embodiment, as a shunt release, is mostly used for a circuit breaker, and after receiving a tripping signal, the movable iron core driving end drives the matching with an operating mechanism of the circuit breaker to drive the circuit breaker to trip or trip.
As shown in fig. 6-9, a second embodiment of the electromagnetic device of the present invention is shown.
The electromagnetic device of the second embodiment is a shunt release, and is different from the first embodiment in that: one end of the ejector rod 21 penetrates through the movable iron core 20 to serve as a movable iron core detection end, and the other end of the ejector rod 21 penetrates through the static iron core 6 to serve as a movable iron core driving end.
Preferably, as shown in fig. 6-8, a second embodiment of the plunger assembly 2 is shown: the movable iron core assembly 2 comprises a movable iron core 20 and a mandril 21; as shown in fig. 6 and 7, the movable iron core 20 includes a first cylindrical portion 201 and a second cylindrical portion 202 coaxially arranged in sequence, an outer diameter of the first cylindrical portion 201 is larger than an outer diameter of the second cylindrical portion 202, a push rod assembly groove and a movable iron core push rod through hole are arranged in the middle of the movable iron core 20, the push rod assembly groove and the movable iron core push rod through hole are sequentially connected, and an inner diameter of the push rod assembly groove is larger than an inner diameter of the movable iron core push rod through hole; as shown in fig. 6 and 8, the ejector rod 21 includes an ejector rod first portion 210, an ejector rod second portion 211, and an ejector rod third portion 212, which are coaxially disposed, two ends of the ejector rod first portion 210 are respectively connected to the ejector rod second portion 211 and the ejector rod third portion 212, an outer diameter of the ejector rod first portion 210 is greater than an outer diameter of the ejector rod second portion 211 and greater than an outer diameter of the ejector rod third portion 212, the ejector rod first portion 210 is matched with the ejector rod assembly groove, the ejector rod second portion 211 penetrates through the static iron core 6 to serve as a moving iron core driving end, and the ejector rod third portion 212 penetrates through the moving iron core ejector rod through hole to serve as a moving iron core detecting end.
As shown in fig. 10-13, a third embodiment of the electromagnetic device of the present invention is shown.
As shown in fig. 10-13, the electromagnetic device of the third embodiment is an undervoltage trip; as shown in fig. 10, when the movable iron core assembly 2 is located at the initial position, the spring 5 is compressed, and the movable iron core assembly 2 and the stationary iron core 6 are attracted; as shown in fig. 13, when the movable iron core assembly 2 is located at the operating position, the spring 5 is relaxed, and the movable iron core assembly 2 is separated from the stationary iron core 6. It should be pointed out, as shown in fig. 13, the utility model discloses when electromagnetic means is the under-voltage release, the under-voltage release is in when normal operating condition, its solenoid 3 lasts circular telegram, solenoid 3's magnetic field makes iron core subassembly 2 be located initial position and quiet iron core 6 and keeps the actuation, when under-voltage release place circuit is under-voltage or under-voltage release fault failure (be that under-voltage release is in when abnormal operating condition), solenoid 3's magnetic field weakens or disappears, be not enough to maintain and move iron core subassembly 2 and quiet iron core 6 and keep the actuation, then spring 5 diastole, promote to move iron core subassembly 2 to the action position and make its and quiet iron core 6 separation.
Preferably, as shown in fig. 10 and 13, the movable iron core assembly 2 includes a movable iron core 20 and a guide rod 21a which act synchronously, one end of the movable iron core 20 is used as a movable iron core driving end, the other end of the movable iron core is connected with one end of the guide rod 21a, and the other end of the guide rod 21a passes through the static iron core 6 and then is used as a movable iron core detecting end; the spring 5 is sleeved on the guide rod 21a, and two ends of the spring are respectively in limit fit with the movable iron core assembly 2 and the static iron core 6.
Preferably, as shown in fig. 10 and 13, the stationary iron core 6 is arranged at one end of the framework installation cavity, and the movable iron core 20 is slidably arranged at the other end of the framework installation cavity. Further, as shown in fig. 10 and 13, the electromagnetic device of the present invention further includes a movable iron core guiding position-limiting member 40 coaxially disposed with the movable iron core assembly 2, the movable iron core guiding position-limiting member 40 is disposed between the movable iron core assembly 2 and the coil frame 30, and the inner diameter of the movable iron core guiding position-limiting member 40 matches with the outer diameter of the movable iron core 20.
Specifically, as shown in fig. 10 and 13, the static iron core 6 is arranged at the upper end of the framework installation cavity, and the movable iron core 20 is slidably arranged at the lower end of the framework installation cavity; the lower end of the movable iron core 20 is used as a movable iron core driving end and is connected with the lower end of the guide rod 21a, and the upper end of the guide rod 21a is used as a movable iron core detecting end after penetrating through the static iron core 6. The movable iron core guiding limiting piece 40 is arranged at the lower end of the framework installation cavity and is positioned between the movable iron core 20 and the coil framework 30.
Preferably, as shown in fig. 10 and 11, a third embodiment of the plunger assembly 2 is provided: the movable iron core assembly 2 comprises a movable iron core 20 and a guide rod 21 a; the movable iron core 20 comprises a movable iron core first part, a movable iron core second part and a movable iron core third part which are coaxially arranged in sequence, the outer diameters of the movable iron core first part, the movable iron core second part and the movable iron core third part are sequentially reduced, the outer diameter of the movable iron core second part is matched with the inner diameter of the movable iron core guide limiting part 40, the movable iron core third part serves as a movable iron core driving end, a guide rod mounting groove is further formed in the middle of one end of the movable iron core 20 and comprises a mounting groove first part and a mounting groove second part which are coaxially arranged, one end of the mounting groove first part is used for the guide rod 21a to be inserted, the other end of the mounting groove first part is connected with the mounting; the guide rod 21a comprises a guide rod first portion 210a, a guide rod second portion 213a and a guide rod third portion 214a, wherein the guide rod second portion 213a and the guide rod third portion 214a are connected with the two ends of the guide rod first portion 210a respectively, the outer diameter of the guide rod first portion 210a is larger than the outer diameters of the guide rod second portion 213a and the guide rod third portion 214a, the outer diameter of the guide rod first portion 210a is matched with the inner diameter of the mounting groove first portion, the outer diameter of the guide rod second portion 213a is matched with the inner diameter of the mounting groove second portion, and the free end of the guide rod third portion 214a penetrates through the static iron core 6 and then serves as a movable iron core driving end.
Preferably, as shown in fig. 10 and 12, an embodiment of the stationary core 6 is: the static iron core 6 comprises a static iron core main body 60, a static iron core flange 61 and a static iron core annular limiting table 62, wherein the static iron core main body 60 is coaxially arranged, the static iron core flange 61 is arranged at one end of the static iron core main body 60, the static iron core annular limiting table 62 is arranged at one side of the static iron core flange 61, and the static iron core annular limiting table 62 and the static iron core main body 60 are respectively positioned at two sides of the static iron core flange; the static iron core annular limiting table 62 is inserted into the static iron core limiting jack of the shell 1, and the static iron core flange 62 is limited between the shell 1 and the coil framework 30. Further, as shown in fig. 12, a first hole section 63 and a second hole section 64 which are coaxially arranged are arranged in the middle of the stationary iron core 6, the outer diameter of the first hole section 63 is smaller than that of the second hole section 64, and spring limiting steps 63-64 are formed at the joint of the first hole section 63 and the second hole section 64.
Preferably, as shown in fig. 10 and 13, the spring 5 is sleeved on the third portion 214a of the guide rod, and two ends of the spring are respectively in limit fit with the spring limit steps 63-64 and the first portion 210a of the guide rod.
It should be pointed out, the utility model discloses electromagnetic means, as the under-voltage release, be applied to the circuit breaker more, when under-voltage release place circuit is under-voltage or under-voltage release trouble, move iron core 20 and be released by quiet iron core 6, spring 5 promotes to move iron core 20 and removes, moves the iron core drive end then with the operating device cooperation of circuit breaker, drive circuit breaker separating brake or tripping operation.
The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims (14)

1. An electromagnetic device comprises a coil assembly (3), a static iron core (6), a movable iron core assembly (2) and a spring (5), wherein the static iron core (6) and the movable iron core assembly (2) are respectively arranged in the middle of the coil assembly (3), and two ends of the spring are respectively in limit fit with the static iron core (6) and the movable iron core assembly (2); the method is characterized in that: the two ends of the movable iron core component (2) are respectively a movable iron core detection end and a movable iron core driving end; the electromagnetic device also comprises a detection structure (9) in non-contact fit with the detection end of the movable iron core;
when the movable iron core assembly (2) is located at an initial position, the detection structure (9) outputs a first signal; when the movable iron core assembly (2) moves to the action position after acting, the movable iron core detection end moves relative to the detection structure (9), and the detection structure (9) outputs a second signal.
2. The electromagnetic device of claim 1, wherein: when the movable iron core assembly (2) is located at the initial position, the detection end of the movable iron core is opposite to the detection structure (9); when the movable iron core assembly (2) moves to the action position after action, the detection end of the movable iron core moves to one side of the detection structure (9).
3. The electromagnetic device of claim 2, wherein: when the movable iron core assembly (2) is positioned at the initial position, the length of the part of the detection end of the movable iron core, which protrudes out of one side of the detection structure (9), is L0(ii) a The length of an air gap between the movable iron core assembly (2) and the static iron core (6) is L1;L0≤L1
When the movable iron core assembly (2) is located at the action position, the detection end of the movable iron core is located on the other side of the detection structure (9).
4. The electromagnetic device of claim 1, wherein: the detection structure (9) is a photoelectric switch; when the movable iron core assembly (2) is located at the initial position, the detection end of the movable iron core is opposite to the photoelectric switch, and the photoelectric switch is switched off or switched on; when the movable iron core assembly (2) moves to the action position after action, the detection end of the movable iron core moves to one side of the photoelectric switch, and the photoelectric switch is switched on or off.
5. The electromagnetic device of claim 1, wherein: the detection structure (9) is a magnetic sensing element; after the movable iron core assembly (2) moves from the initial position to the action position, the magnetic field intensity of the environment where the magnetic sensing element is located is changed.
6. The electromagnetic device of claim 5, wherein: the magnetic sensing element is a Hall element.
7. The electromagnetic device of claim 1, wherein: the electromagnetic device further comprises a circuit board (7), and the detection structure (9) is connected with the circuit board (7).
8. The electromagnetic device of claim 7, wherein: the circuit board (7) comprises a first circuit board part (70) arranged on one side of the coil assembly (3) in the radial direction, and the coil assembly (3) further comprises a splicing needle (8) which is spliced and matched with the first circuit board part (70).
9. The electromagnetic device of claim 7, wherein: the electromagnetic device further comprises a shell (1), the coil assembly (3) and the circuit board (7) are respectively and fixedly arranged on the shell (1), the circuit board (7) comprises a first circuit board part (70) and a second circuit board part (71), the first circuit board part (70) is arranged on one radial side of the coil assembly (3), the second circuit board part (71) is arranged on the outer side of one end of the coil assembly (3), and a circuit board opening (710) for the movable iron core detection end to pass through is formed in the second circuit board part (71); the detection structure (9) is arranged on the second circuit board portion (71) and located on the peripheral side wall of the circuit board opening (710), and the detection structure (9) and the coil assembly (3) are located on two sides of the second circuit board portion (71) respectively.
10. The electromagnetic device according to any one of claims 1 to 9, characterized in that: the electromagnetic device is a shunt release; when the movable iron core assembly (2) is located at the initial position, the spring (5) is relaxed, and the movable iron core assembly (2) is separated from the static iron core (6); when the movable iron core component (2) is located at the action position, the spring (5) is compressed, and the movable iron core component (2) is attracted with the static iron core (6).
11. The electromagnetic device of claim 10, wherein: the movable iron core assembly (2) comprises a movable iron core (20) and an ejector rod (21) which synchronously act, one end of the movable iron core (20) is a movable iron core detection end, the other end of the movable iron core is connected with one end of the ejector rod (21), and the other end of the ejector rod (21) penetrates through the static iron core (6) and then serves as a movable iron core driving end; the spring (5) is sleeved on the ejector rod (21), and two ends of the spring are respectively in limit fit with the movable iron core assembly (2) and the static iron core (6).
12. The electromagnetic device of claim 10, wherein: the movable iron core assembly (2) comprises a movable iron core (20) and an ejector rod (21) which act synchronously, one end of the ejector rod (21) penetrates through the movable iron core (20) to serve as a movable iron core detection end, and the other end of the ejector rod (21) penetrates through the static iron core (6) to serve as a movable iron core driving end; the spring (5) is sleeved on the ejector rod (21), and two ends of the spring are respectively in limit fit with the movable iron core assembly (2) and the static iron core (6).
13. The electromagnetic device according to any one of claims 1 to 9, characterized in that: the electromagnetic device is an undervoltage release; when the movable iron core assembly (2) is located at the initial position, the spring (5) is compressed, and the movable iron core assembly (2) is attracted with the static iron core (6); when the movable iron core assembly (2) is located at the action position, the spring (5) is relaxed, and the movable iron core assembly (2) is separated from the static iron core (6).
14. The electromagnetic device of claim 13, wherein: the movable iron core assembly (2) comprises a movable iron core (20) and a guide rod (21a) which synchronously act, one end of the movable iron core (20) is used as a movable iron core driving end, the other end of the movable iron core (20) is connected with one end of the guide rod (21a), and the other end of the guide rod (21a) penetrates through the static iron core (6) and then is used as a movable iron core detecting end; the spring (5) is sleeved on the guide rod (21a), and two ends of the spring are respectively in limit fit with the movable iron core assembly (2) and the static iron core (6).
CN202021703539.0U 2020-08-14 2020-08-14 Electromagnetic device Active CN212695098U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202021703539.0U CN212695098U (en) 2020-08-14 2020-08-14 Electromagnetic device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202021703539.0U CN212695098U (en) 2020-08-14 2020-08-14 Electromagnetic device

Publications (1)

Publication Number Publication Date
CN212695098U true CN212695098U (en) 2021-03-12

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202021703539.0U Active CN212695098U (en) 2020-08-14 2020-08-14 Electromagnetic device

Country Status (1)

Country Link
CN (1) CN212695098U (en)

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