CN115405165A - Electromagnetic lock control device with double-armature and double-coil structure and control circuit - Google Patents
Electromagnetic lock control device with double-armature and double-coil structure and control circuit Download PDFInfo
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- CN115405165A CN115405165A CN202110590198.3A CN202110590198A CN115405165A CN 115405165 A CN115405165 A CN 115405165A CN 202110590198 A CN202110590198 A CN 202110590198A CN 115405165 A CN115405165 A CN 115405165A
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- lock control
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- 230000007246 mechanism Effects 0.000 claims abstract description 24
- 230000005284 excitation Effects 0.000 claims abstract description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 10
- 230000009471 action Effects 0.000 claims abstract description 4
- 230000005281 excited state Effects 0.000 abstract description 2
- 238000004804 winding Methods 0.000 description 15
- 238000010438 heat treatment Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 101000623895 Bos taurus Mucin-15 Proteins 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
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Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/02—Movement of the bolt by electromagnetic means; Adaptation of locks, latches, or parts thereof, for movement of the bolt by electromagnetic means
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
- E05B47/0002—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with electromagnets
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/44—Magnetic coils or windings
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Electromagnets (AREA)
Abstract
The invention discloses a double-armature double-coil structure electromagnetic lock control device and a control circuit, which comprise an armature I, an armature II, a coil I, a coil II, an iron core for generating electromagnetic force under excitation loading, a locking device for providing reaction force under the state of no excitation and a pull rod for being matched with an external mechanism, wherein the armature I is connected with the armature II; the armature I is positioned in the coil I, the armature II is positioned in the coil II, and the armature I and the armature II are connected and can move simultaneously under the action of external force; the coil I and the coil II are connected in series, and the locking device generates acting force to act on the armature I or the armature II so as to ensure that the pull rod is connected with an external mechanism without unlocking by providing reaction force under the non-excited state. The device effectively increases the electromagnetic suction force in the whole stroke range or the armature moving stroke, synchronously lifts the moving stroke and the electromagnetic suction force of the electromagnetic lock control device, and reliably unlocks related mechanisms.
Description
Technical Field
The invention relates to an electromagnetic lock control device with double armatures and double coil structures and a control circuit.
Background
Most of electromagnetic lock control device products are of telescopic single armature and single coil structures, the electromagnetic lock control device of the single armature and single coil structure forms an electromagnetic system through a coil, an armature, a yoke and the like, and when the coil is electrified, electromagnetic attraction is generated on the armature.
The electromagnetic lock control device used in many fields locks related mechanisms, and the electromagnetic attraction and the stroke of a moving part of the electromagnetic lock control device are larger and larger, and the requirements on the volume and the power of the electromagnetic lock control device are smaller and smaller, so the electromagnetic attraction and the movement stroke of the electromagnetic lock control device are increased under the condition that the volume and the power of the electromagnetic lock control device are required to be ensured to be as small as possible.
At present, under the condition that the volume and the power are limited, if the electromagnetic suction force of the electromagnetic lock control device needs to be increased, the movement stroke of the armature needs to be reduced, but the problem that the use requirement can not be met after the movement stroke is reduced occurs in the traditional electromagnetic lock control device with the single armature and single coil structure; if the movement stroke of the armature needs to be increased, the problem that the electromagnetic attraction is reduced in the initial state of the electromagnetic lock control device is caused.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention aims to provide an electromagnetic lock control device with a double-armature and double-coil structure, which can effectively increase the electromagnetic attraction force in the whole stroke range or increase the armature movement stroke compared with the electromagnetic lock control device with a single-armature and single-coil structure under the condition that the size and the power of the electromagnetic lock control device are limited, and can balance the relationship between the electromagnetic attraction force and the armature movement stroke, so that the electromagnetic attraction force and the armature movement stroke can be simultaneously lifted, and a related mechanism can be reliably unlocked.
In order to realize the purpose of the invention, the electromagnetic lock control device with the double-armature and double-coil structure comprises an armature I, an armature II, a coil I, a coil II, an iron core for generating electromagnetic force under excitation loading, a locking device for providing reaction force under an unexcited state and a pull rod for being matched with an external mechanism; the armature I is positioned in the coil I, the armature II is positioned in the coil II, and the armature I and the armature II are connected and can move simultaneously under the action of external force; the coil I and the coil II are connected in series, and the locking device generates acting force to act on the armature I or the armature II so as to ensure that the pull rod is connected with an external mechanism without unlocking by providing reaction force under the non-excited state; under the excitation state, the armature I and the armature II generate two electromagnetic attraction forces in the same direction, and the two electromagnetic attraction forces are superposed, so that the pull rod pulls an external unlocking mechanism to realize the unlocking function.
Another objective of the present invention is to provide a control circuit, which is configured to reduce a coil current in an actuation state of the electromagnetic lock control device with a dual-armature and dual-coil structure provided by the present invention in an actuation loading state, and includes an impedance element and a switch K, where the impedance element is connected in series between the coil i and/or the coil ii and a circuit ground, and the switch K is connected in parallel between the impedance elements; in an unloaded excitation state, the switch K is closed; in an excitation loading state, the switch K is disconnected; the heating power of the coil is reduced, and meanwhile, the electromagnetic lock control device can ensure that the related mechanisms are pulled to keep a reliable unlocking state.
The invention has the beneficial effects that: the electromagnetic lock control device with the double-armature and double-coil structure can effectively increase the electromagnetic suction force in the whole stroke range or increase the armature movement stroke compared with the electromagnetic lock control device with the single-armature and single-coil structure under the condition of limited volume and power, can balance the electromagnetic suction force and the movement stroke, synchronously lift the movement stroke and the electromagnetic suction force of the electromagnetic lock control device, and reliably unlock related mechanisms.
In addition, the electromagnetic suction force of the electromagnetic lock control device is greatly increased in the attraction state, and the coil current in the attraction state can be reduced by connecting a control circuit outside the electromagnetic lock control device, so that the heating power of the coil is reduced, and meanwhile, the electromagnetic lock control device can ensure that the electromagnetic lock control device pulls the relevant mechanism to keep the reliable unlocking state.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
fig. 1 is a schematic structural diagram of a lock control device provided by the present invention;
FIG. 2 is a schematic structural view of an armature assembly I of the present invention;
FIG. 3 is a schematic structural view of an armature assembly II of the present invention;
FIG. 4 is a schematic diagram of the control circuit of the present invention;
description of the reference numerals:
1-armature component I, 1_1-armature I, 1_2-cover plate, 1_3-pull rod, 2-magnetizer I, 3-guide tube I, 4-coil I, 5-yoke, 6-rotation preventing shaft, 7-magnetizer II, 8-guide tube II, 9-armature component II, 9_1-armature II, 9_2-connecting rod, 9_3-guide rod, 10-coil II, 11-locking device and 12-iron core.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art.
Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to provide a thorough understanding of embodiments of the invention. One skilled in the relevant art will recognize, however, that the inventive arrangements can be practiced without one or more of the specific details, or with other methods. In other instances, well-known methods, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the invention.
With reference to fig. 1-3, an exemplary structure of the electromagnetic lock control device with a double-armature and double-coil structure is shown, and comprises an armature component i 1, a coil i 4, a yoke 5, an armature component ii 9, a coil ii 10, a locking device 11, an iron core 12 and the like, wherein the armature component i 1 comprises an armature i 1_1, a cover plate 1_2 and a pull rod 1_3, and the armature component ii 9 comprises an armature ii 9_1, a connecting rod 9_2 and a guide rod 9_3. The yoke iron 5 comprises a first cavity and a second cavity, and the coil I4 and the coil II 10 are respectively arranged in the first cavity and the second cavity of the yoke iron 5 and are connected in series; the armature assembly I1 and the armature assembly II 9 are respectively arranged in the coil I4 and the coil II 10, the armature I1_1 and the armature II 9_1 are rigidly connected through a connecting rod 9_2, and the armature assemblies can move simultaneously during movement.
A cover plate 1_2 in the armature assembly I1 is installed in the yoke 5, one end of a pull rod 1_3 is connected with the armature I1_1, the other end of the pull rod passes through the cover plate 1_2 and the yoke 5 to extend out of the yoke 5, and the pull rod is located outside the yoke 5 and matched with an external mechanism. As shown in fig. 2, the pull rod 1_3 is provided with a hanging hole, and is matched with an unlocking mechanism required by the outside, when the coil is not electrified, and the electromagnetic lock control device is not electrified, the electromagnetic attraction force is not generated, and under the action of the reverse force of the locking device 11, the pull rod 1_3 completely extends out of the yoke 5 and is connected with a relevant mechanism in a locking state; when voltage is applied to the electromagnetic locking device, the electromagnetic lock control device generates two magnetic loops, the armature I11 and the armature II 91 generate two electromagnetic suction forces in the same direction, the two electromagnetic suction forces are superposed to generate a larger output resultant force, and an external unlocking mechanism is reliably pulled to realize an unlocking function.
The lock control device provided by the scheme further comprises a magnetizer I2, a guide pipe I3, a magnetizer II 7 and a guide pipe II 8. The magnetizer I2 is arranged in the first cavity of the yoke 5, the magnetizer II 7 is arranged in the second cavity of the yoke 5, and the rotation-proof shaft 6 is used for connecting the magnetizer II 7 with the yoke 5; the guide pipe I3 and the guide pipe II 8 are respectively fixed on the first cavity and the second cavity of the yoke iron 5 and positioned between the coil and the armature, and are used for realizing the guide function in the movement process of the armature and helping the armature to move.
In this context, the locking device 11 may be any one, such as a compression spring, which may be fixed between the armature assembly ii 9 and the core 12, and the core 12 is installed in the cavity of the yoke 5.
When the coil is powered on, the lock control device respectively generates electromagnetic attraction forces in the same direction to the two armatures, and the two electromagnetic attraction forces are superposed, so that the electromagnetic lock control device generates larger electromagnetic attraction force, and reliably pulls the relevant mechanism to unlock. The unlocking mechanism is mainly suitable for the fields of aerospace, airborne hangers and the like and is used for unlocking mechanical motion of a specific mechanism.
The electromagnetic lock control device with the double armatures and the double coils has the advantages of simple structural design, large electromagnetic attraction and large armature movement stroke, so that the stroke of a pull rod of an unlocking execution mechanism connected with the armatures is also large, and reliable unlocking is realized.
In order to ensure that the electromagnetic lock control device pulls the relevant mechanism to keep a reliable unlocking state, reduce the heating power of the coil and ensure the performance of the device, a control circuit can be arranged, and the circuit can form a part of the device and can be independent of the device; the control circuit is used for reducing the coil current in the pull-in state when the control circuit is in the excitation loading state.
The control circuit provided herein may adopt any circuit capable of reducing the coil current in the excitation loading state, and the present embodiment provides an exemplary circuit structure, but it should be understood by those skilled in the art that the modifications made on the exemplary circuit provided herein belong to the claimed control circuit of the present application.
The exemplary control circuit provided by the embodiment comprises an impedance element and a switch K, wherein the impedance element is connected between a coil I4 and/or a coil II and a circuit ground in series, and the switch K is connected between the impedance elements in parallel; in the unloaded excitation state, the switch K is closed; in the excitation loading state, the switch K is disconnected after the coil I4 and/or the coil II are/is attracted (in the excitation loading state), the windings of the coil I4 and/or the coil II are/is connected with the impedance element in series, the resistance is increased, the current is reduced, and the purpose of reducing the heating power of the coil is achieved.
Any impedance element in the control circuit in this embodiment may be used, such as a resistor, an inductor, a coil winding, and the like. The exemplary control circuit provided by the present embodiment is further described herein in connection with the coil windings as impedance elements. The impedance element comprises an attraction winding connected in series between the coil I4 and/or the coil II and a circuit ground, the switch K is connected in parallel with two ends of the attraction winding, the switch K is disconnected after attraction (in an excitation loading state), the winding of the coil I4 and/or the coil II is connected in series with the attraction winding, the resistance is increased, the current is reduced, and the purpose of reducing the heating power of the coil is achieved.
The attraction winding in the embodiment can be independently arranged, or the coil I4 and the coil II 11 can be changed into double-layer windings, namely a starting winding and the attraction winding, when the starting winding applies voltage to the electromagnetic locking device, two magnetic loops are generated, the armature I11 and the armature II 91 generate two electromagnetic attractive forces in the same direction, the two electromagnetic attractive forces are superposed to generate a larger output resultant force, and an external mechanism needing to be unlocked is reliably pulled to realize the unlocking function; when the attracting winding applies voltage to the electromagnetic locking device, the current in the starting winding is reduced. Referring to a schematic diagram shown in fig. 4, after the coil is closed, the switch K is switched off, all the windings are connected in series, the resistance is increased, the current in the coil is reduced, and the purpose of reducing the heating power of the coil is achieved.
The present disclosure has been described in relation to the above embodiments, which are only examples for implementing the present disclosure. It must be noted that the disclosed embodiments do not limit the scope of the disclosure. Rather, variations and modifications are possible within the spirit and scope of the disclosure, and these are all within the scope of the disclosure.
Claims (10)
1. The utility model provides a two armature, twin coil structure electromagnetic lock control device which characterized in that: the device comprises an armature I (1_1), an armature II (9_1), a coil I (4), a coil II (10), an iron core (12) used for generating electromagnetic force under excitation loading, a locking device used for providing reaction force under the non-excitation state and a pull rod (1_3) matched with an external mechanism; the armature I (1_1) is positioned inside the coil I (4), the armature II (9_1) is positioned inside the coil II (10), and the armature I (1_1) and the armature II (9_1) are connected and can move simultaneously under the action of external force; the coil I (4) and the coil II (10) are connected in series, and the locking device generates acting force to act on the armature I (1_1) or the armature II (9_1) so as to ensure that the pull rod (13) is connected with an external mechanism without unlocking by providing reaction force under an unexcited state; under the excitation state, the armature I (1_1) and the armature II (9_1) generate two electromagnetic suction forces in the same direction, and the two electromagnetic suction forces are superposed, so that the pull rod (1_3) pulls an external mechanism to be unlocked, and the unlocking function is realized.
2. The double-armature double-coil structure electromagnetic lock control device according to claim 1, characterized in that: still include yoke (5), yoke (5) include first cavity and second cavity, coil I (4) install in the first cavity, coil II (10) install in the second cavity.
3. The double-armature double-coil structure electromagnetic lock control device according to claim 1, characterized in that: the magnetic control device also comprises a guide pipe I (3) positioned between the coil I (4) and the armature I (1_1).
4. The double-armature double-coil structure electromagnetic lock control device according to claim 1, characterized in that: the magnetic control device also comprises a guide pipe II (8) positioned between the coil II (10) and the armature II (9_1).
5. The double-armature double-coil structure electromagnetic lock control device according to any one of claims 1 to 4, characterized in that: the magnetic field generator also comprises a magnetizer I (2).
6. The double-armature double-coil structure electromagnetic lock control device according to any one of claims 1 to 4, characterized in that: the device also comprises a guide pipe II (8).
7. The double-armature double-coil structure electromagnetic lock control device according to claim 6, characterized in that: and the anti-rotation shaft (6) is used for fixing the magnetizer II (7).
8. The double-armature double-coil structure electromagnetic lock control device according to claim 1, characterized in that: the armature I (1_1) and the armature II (9_1) are rigidly connected through a connecting rod (9_2).
9. The double-armature double-coil structure electromagnetic lock control device according to claim 1, characterized in that: the armature I (1_1) is connected with the pull rod (13), and the armature II (9_1) is connected with a guide rod (9_3).
10. A control circuit, characterized by: the control circuit is used for reducing coil current in an attraction state of the double-armature double-coil structure electromagnetic lock control device according to any one of claims 1 to 9 in an excitation loading state, and comprises an impedance element and a switch K, wherein the impedance element is connected in series between the coil I (4) and/or the coil II (10) and a circuit ground, and the switch K is connected in parallel between the impedance elements; in an unloaded excitation state, the switch K is closed; in the energized loading state, the switch K is open.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110590198.3A CN115405165A (en) | 2021-05-28 | 2021-05-28 | Electromagnetic lock control device with double-armature and double-coil structure and control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110590198.3A CN115405165A (en) | 2021-05-28 | 2021-05-28 | Electromagnetic lock control device with double-armature and double-coil structure and control circuit |
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| CN115405165A true CN115405165A (en) | 2022-11-29 |
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| CN202110590198.3A Pending CN115405165A (en) | 2021-05-28 | 2021-05-28 | Electromagnetic lock control device with double-armature and double-coil structure and control circuit |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2043238A1 (en) * | 2007-09-28 | 2009-04-01 | Siemens Building Technologies HVAC Products GmbH | Electromagnetic drive unit |
| WO2010145906A1 (en) * | 2009-06-18 | 2010-12-23 | Pierburg Gmbh | Electromagnetic valve |
| CN202887901U (en) * | 2012-11-16 | 2013-04-17 | 贵州振华群英电器有限公司 | Magnetic circuit system capable of regulating armature stroke |
| CN103198981A (en) * | 2013-03-18 | 2013-07-10 | 贵州锐动科技有限公司 | Magnetic holding electromagnetic switch element capable of resisting outside magnetic interference |
| DE112015003567T5 (en) * | 2014-09-04 | 2017-05-04 | Borgwarner Inc. | BUS CONFIGURATED LOCKING ELECTROMAGNET |
| CN206987566U (en) * | 2017-06-30 | 2018-02-09 | 比亚迪股份有限公司 | Unlock trigger mechanism, electronic lock and platform door system |
| CN110138169A (en) * | 2019-05-10 | 2019-08-16 | 中国计量大学 | A kind of electromagnet push-and-pull control device |
| DE102018001243A1 (en) * | 2018-02-16 | 2019-08-22 | Kendrion (Donaueschingen/Engelswies) GmbH | Bistable electromagnetic lifting actuator and wire drawing machine |
| EP3591673A1 (en) * | 2018-06-12 | 2020-01-08 | Isliker Magnete AG | Electromagnetic actuator |
| CN111834078A (en) * | 2020-06-30 | 2020-10-27 | 西安庆安电气控制有限责任公司 | DC self-lubricating guiding resettable electromagnet |
-
2021
- 2021-05-28 CN CN202110590198.3A patent/CN115405165A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2043238A1 (en) * | 2007-09-28 | 2009-04-01 | Siemens Building Technologies HVAC Products GmbH | Electromagnetic drive unit |
| WO2010145906A1 (en) * | 2009-06-18 | 2010-12-23 | Pierburg Gmbh | Electromagnetic valve |
| CN202887901U (en) * | 2012-11-16 | 2013-04-17 | 贵州振华群英电器有限公司 | Magnetic circuit system capable of regulating armature stroke |
| CN103198981A (en) * | 2013-03-18 | 2013-07-10 | 贵州锐动科技有限公司 | Magnetic holding electromagnetic switch element capable of resisting outside magnetic interference |
| DE112015003567T5 (en) * | 2014-09-04 | 2017-05-04 | Borgwarner Inc. | BUS CONFIGURATED LOCKING ELECTROMAGNET |
| CN206987566U (en) * | 2017-06-30 | 2018-02-09 | 比亚迪股份有限公司 | Unlock trigger mechanism, electronic lock and platform door system |
| DE102018001243A1 (en) * | 2018-02-16 | 2019-08-22 | Kendrion (Donaueschingen/Engelswies) GmbH | Bistable electromagnetic lifting actuator and wire drawing machine |
| EP3591673A1 (en) * | 2018-06-12 | 2020-01-08 | Isliker Magnete AG | Electromagnetic actuator |
| CN110138169A (en) * | 2019-05-10 | 2019-08-16 | 中国计量大学 | A kind of electromagnet push-and-pull control device |
| CN111834078A (en) * | 2020-06-30 | 2020-10-27 | 西安庆安电气控制有限责任公司 | DC self-lubricating guiding resettable electromagnet |
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