CN1881506B - Electromagnetic relay magnetic circuit and its working method - Google Patents
Electromagnetic relay magnetic circuit and its working method Download PDFInfo
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- CN1881506B CN1881506B CN200510043746A CN200510043746A CN1881506B CN 1881506 B CN1881506 B CN 1881506B CN 200510043746 A CN200510043746 A CN 200510043746A CN 200510043746 A CN200510043746 A CN 200510043746A CN 1881506 B CN1881506 B CN 1881506B
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Abstract
The invention relates to an improvement of magnetic loop structure of electromagnetic relay and relative working method, wherein said magnetic loop comprises a C-shape element formed by stable magnetic conductor and magnetic steel, a coil and a movable magnetic conductor. Said magnetic loop can enlarge the coiling space and reduce the occupancy of inner space of relay, to simplify the production and reduce the accuracy demand of element and installment. The connection of movable element and stable element use non-metallic connection, to reduce powder, and make the structure of relay more compact, with small volume, high sensitivity and high working reliability.
Description
Technical field
The present invention relates to a kind of electromagnetic relay, especially relate to a kind of magnetic circuit and method of work thereof of electromagnetic relay.
Background technology
Electromagnetic relay is widely used in the automatic control equipment, because the needs of development in science and technology require relay construction compacter, volume is littler, and sensitivity is higher, and functional reliability is higher, and energy consumption is lower.For reaching above-mentioned requirements, such relay magnetic structures that magnet steel is arranged that adopt more, to reduce volume and energy consumption, improve sensitivity and reliability, known magnetic structure has following several: disclose a kind of " E " shape magnetic structure with magnet steel in CN02134301.2 number patent of invention and the JP09-139166 patent of invention, it is that metal friction easily produces powder that this magnetic structure complexity, magnet steel and/or supporting magnetic conductor have occupied certain winding space, armature and supporting magnetic conductor; The US4695813 patent of invention discloses a kind of " mouth " magnetic circuit, this magnetic structure complexity, and the element precision of requirement and assembly precision height thereof, and magnet steel occupied certain winding space, armature and magnet steel are metals and the contacting of metal, easily friction produces powder; The US6670871 patent of invention discloses the movable magnetic circuit of a kind of magnet steel, and the moving part quality of this magnetic structure is big, and inertia is big, the anti shock and vibration poor-performing, and functional reliability is not high, and magnet steel has also occupied the inner certain space of relay.
Summary of the invention
The objective of the invention is to overcome the shortcoming of above-mentioned prior art, a kind of magnetic circuit and method of work thereof of electromagnetic relay are provided, this magnetic circuit has enlarged winding space, reduce the inner space that takies relay, reduced the quality of movable member, reduced required precision to part and assembling, the nonmetallic way of contact has been adopted in contacting of its movable member and stationary parts, reduced the generation of powder, thereby the simplification production technology makes relay construction compacter, and volume is littler, sensitivity is higher, and functional reliability is higher.
For achieving the above object, the magnetic circuit of a kind of electromagnetic relay of the present invention, comprise static magnetic conductor 11c, magnet steel 11d, coil 13 and movable magnetic conductor 31, it is characterized in that described static magnetic conductor 11c is arranged on the two ends of described magnet steel 11d, both form one " C " shape parts 11.Described coil 13 is wound on described " C " shape parts 11, and insulating material is arranged between them, and described insulating material can be injection-moulded in " C " shape parts 11, also can be to wrap up or be coated on " C " shape parts 11.
The supporting member 22 that the movable magnetic conductor of described supporting rotates is nonmetallic materials.
Described magnetic circuit can be the two ends that described static magnetic conductor 11c are placed on described magnet steel 11d, the cross section of described magnet steel is identical, magnetic field intensity left-right symmetric and even. and the method for work of described magnetic circuit is: because the cross section of magnet steel 11d is identical, magnetic field intensity left-right symmetric and even, two uniform magnetic loops 51,52 of magnetic field intensity in the magnetic circuit have been formed, do not giving under the situation of coil power supply, there are two stable states in described magnetic circuit, reset and SM set mode, establish accompanying drawing and be depicted as reset mode; Under the reset mode, because the pole-face 11b of the pole-face 31b of movable magnetic conductor 31 and static magnetic conductor 11c applying, and another has air gap to pole-face, so the magnetic force of magnetic loop 52 greater than the magnetic force of magnetic loop 51, makes relay remain on reset mode; At reset mode, when instantaneous set driving voltage being provided for described coil 13, the magnetic field of the magnetic field opposing magnetic loop 52 that described coil 13 produces, and the magnetic field that strengthens magnetic loop 51, make the pole-face 31b of described movable magnetic conductor 31 and the pole-face 11b of described static magnetic conductor 11c break away from, and the pole-face 11a of the pole-face 31a of movable magnetic conductor 31 and static magnetic conductor 11c fits, remove the driving voltage of coil 13 afterwards, the magnetic force of magnetic loop 51 is greater than the magnetic force of magnetic loop 52, and magnetic circuit remains on SM set mode; In SM set mode, when instantaneous resetting voltage being provided for described coil 13, magnetic circuit is returned to reset mode again; And so forth, the contact component that drives relay cut-offs.
Described magnetic circuit also can be that a pole-face of the described movable magnetic conductor 31 in above-mentioned magnetic circuit is provided with an antifreeze plate 34, or described static magnetic conductor 11c is placed on magnetic field intensity evenly but the both sides of the inconsistent described magnet steel 11d of cross section, or it is asymmetric but the both sides of the described magnet steel 11d that cross section is identical make the magnetic field intensity of magnetic circuit inhomogeneous that described static magnetic conductor 11c is placed on the magnetic field intensity left and right sides.The method of work of described magnetic circuit is, because the magnetic field intensity of two magnetic loops 51,52 is inhomogeneous in the magnetic circuit, under the condition of not giving described coil 13 power supplies, only there is a stable state in magnetic circuit, and promptly release condition are established accompanying drawing and are depicted as release condition; Under the release condition, because the magnetic force of magnetic loop 52 greater than the magnetic force of magnetic loop 51, makes the pole-face 31b of described movable magnetic conductor 31 and the pole-face 11b of static magnetic conductor 11c fit, and another is thrown off pole-face, and relay remains on release condition; In release condition, when driving voltage being provided for described coil 13, the magnetic field of the magnetic field opposing magnetic loop 52 that described coil 13 produces, and the magnetic field that strengthens magnetic loop 51, make the pole-face 31b of described movable magnetic conductor 31 and the pole-face 11b of described static magnetic conductor 11c break away from, and the pole-face 11a of the pole-face 31a of described movable magnetic conductor 31 and described static magnetic conductor 11c fits, and relay is in operate condition; Behind the driving voltage that removes coil 13, because the magnetic force of magnetic loop 52 is greater than the magnetic force of magnetic loop 51, magnetic circuit is returned to release condition; And so forth, drive cut-offfing of contact component.
The magnetic circuit of electromagnetic relay of the present invention can be applicable on a kind of electromagnetic relay, described electromagnetic relay, comprise case 4, armature assembly 3, coil component 1 and quiet spring footnote are moulded together pedestal 2, described coil component 1 comprises magnet steel 11d and static magnetic conductor 11c " C " shape parts 11 that constitute and the bobbin 12 that insulate that is injection-moulded in together, be wound with coil 13 on the described bobbin 12, described armature assembly 3 comprises described armature 31 and is arranged at least one movable contact spring 33 of armature 31 sides and they are injection-moulded in together insulating material 32.The magnetic circuit that described magnet steel 11d, static magnetic conductor 11c, coil 13 and armature 31 constitute can form left-right symmetric or asymmetrical magnetic circuit.
Compared with prior art, the invention has the advantages that magnetic circuit and method of work thereof that a kind of electromagnetic relay is provided, its stationary part of this magnetic circuit constitutes " C " shape, do not take winding space as " E " shape structure, do not take the inner space of relay yet, and reduced the quality of movable member as the movable structure of magnet steel; Its stationary part is wrapped in insulating material inside, has reduced element precision and assembly precision requirement; Nonmetallic connected mode has been adopted in being connected of its movable member and stationary parts, has reduced the generation of powder, thereby has simplified production technology, make relay construction compacter, volume is littler, and sensitivity is higher, functional reliability is higher, is applicable to large-scale production line operation.
Description of drawings:
Fig. 1 is the front view of one embodiment of the invention;
Fig. 2 is the front view of another embodiment of the present invention;
Fig. 3 is the front view of another embodiment of the present invention;
Fig. 4 is the front view of another embodiment of the present invention;
Fig. 5 is a cutaway view of using an electromagnetic relay embodiment of the present invention;
Fig. 6 is a blast axonometric drawing of using an electromagnetic relay embodiment of the present invention.
Embodiment
Below, the present invention is described in more detail with reference to accompanying drawing embodiment.
Fig. 1 has provided one embodiment of the present of invention, this magnetic circuit comprises static magnetic conductor 11c, magnet steel 11d, coil 13 and movable magnetic conductor 31, described static magnetic conductor 11c is placed on the two ends of magnet steel 11d, both form one " C " shape parts 11, described coil 13 is wound on described " C " shape parts 11, insulating material is arranged between them, described insulating material can be injection-moulded in " C " shape parts 11, also can be to wrap up or be coated on " C " shape parts 11. in described magnetic circuit, described static magnetic conductor 11c is placed on the two ends of magnet steel 11d, and the cross section of magnet steel 11d is identical, magnetic field intensity is even and symmetrical, its method of work is: because the cross section of magnet steel is identical, magnetic field intensity is even and symmetrical, two uniform magnetic loops 51 of magnetic field intensity in the magnetic circuit have been formed, 52, do not giving under the condition of coil power supply, there are two stable states in described magnetic circuit, resets and SM set mode, establishes accompanying drawing and is depicted as reset mode; Under the reset mode, because the pole-face 11b of the pole-face 31b of movable magnetic conductor 31 and static magnetic conductor 11c applying, and another has air gap to pole-face, so the magnetic force of magnetic loop 52 greater than the magnetic force of magnetic loop 51, makes relay remain on reset mode; At reset mode, when instantaneous set driving voltage being provided for described coil 13, the magnetic field of the magnetic field opposing magnetic loop 52 that described coil 13 produces, and the magnetic field that strengthens magnetic loop 51, make the pole-face 31b of described movable magnetic conductor 31 and the pole-face 11b of described static magnetic conductor 11c break away from, and the pole-face 11a of the pole-face 31a of described movable magnetic conductor 31 and described static magnetic conductor 11c fits, remove the driving voltage of coil 13 afterwards, the magnetic force of magnetic loop 51 is greater than the magnetic force of magnetic loop 52, and magnetic circuit remains on SM set mode; In SM set mode, when instantaneous resetting voltage being provided for described coil 13, magnetic circuit is returned to reset mode again; And so forth, the contact component that drives relay cut-offs.
Fig. 2 has provided an alternative embodiment of the invention, in this magnetic circuit described static magnetic conductor 11c is positioned over magnetic field intensity evenly but the two ends of the inconsistent described magnet steel 11d of cross section make the magnetic field intensity of magnetic circuit inhomogeneous.
Fig. 3 has provided an alternative embodiment of the invention, in this magnetic circuit described static magnetic conductor 11c is positioned over that cross section is identical, magnetic field intensity evenly but the two ends of the asymmetric described magnet steel 11d in the left and right sides make the magnetic field intensity of magnetic circuit inhomogeneous.
Fig. 4 has provided an alternative embodiment of the invention, this magnetic circuit comprises static magnetic conductor 11c, magnet steel 11d, coil 13 and movable magnetic conductor 31, described static magnetic conductor 11c is placed on the two ends of described magnet steel 11d, both form one " C " shape parts 11, described coil 13 is wound on the two poles of the earth 11a, the 11b on described " C " shape parts 11, welding one antifreeze plate 34 on a pole-face 31a of described movable magnetic conductor 31 makes the magnetic field intensity of two magnetic loops of magnetic circuit inhomogeneous.
As Fig. 2 or the described magnetic circuit of Fig. 4, its method of work is: because the magnetic field intensity of two magnetic loops 51,52 is inhomogeneous in the magnetic circuit, do not giving under the condition of coil 13 power supplies, only there is a stable state in described magnetic circuit, be release condition, establish accompanying drawing and be depicted as release condition; Under the release condition, because the magnetic force of magnetic loop 52 greater than the magnetic force of magnetic loop 51, makes the pole-face 31b of movable magnetic conductor 31 and the pole-face 11b of static magnetic conductor 11c fit, and another is thrown off pole-face, and relay remains on release condition; In release condition, when driving voltage being provided for described coil 13, the magnetic field of the magnetic field opposing magnetic loop 52 that described coil 13 produces, and the magnetic field that strengthens magnetic loop 51, make the pole-face 31b of described movable magnetic conductor 31 and the pole-face 11b of described static magnetic conductor 11c break away from, and the pole-face 11a of the pole-face 31a of described movable magnetic conductor 31 and described static magnetic conductor 11c fits, and relay is in operate condition; Behind the driving voltage that removes coil 13, because the magnetic force of magnetic loop 52 is greater than the magnetic force of magnetic loop 51, magnetic circuit is returned to release condition; And so forth, the contact component that drives relay cut-offs.
Fig. 5, Fig. 6 have provided and have used electromagnetic relay of the present invention, described electromagnetic relay, comprise case 4, armature assembly 3, coil component 1 and quiet spring footnote are moulded together pedestal 2, described coil component 1 comprises magnet steel 11d and static magnetic conductor 11c " C " shape parts 11 that constitute and the bobbin 12 that insulate that is injection-moulded in together, be wound with coil 13 on the described bobbin 12, described armature assembly 3 comprises armature 31 and is arranged at least one movable contact spring 33 of described armature 31 sides and they are injection-moulded in together insulating material 32.The magnetic circuit that described magnet steel 11d, static magnetic conductor 11c, coil 13 and armature 31 constitute can form left-right symmetric or asymmetrical magnetic circuit.
Claims (9)
1. the magnetic circuit of an electromagnetic relay, comprise static magnetic conductor, magnet steel, coil and movable magnetic conductor, it is characterized in that two described static magnetic conductors are positioned over the two ends of described magnet steel, the three forms one " C " shape parts, coil winding is on described " C " shape parts, between coil and " C " shape parts, insulating material is arranged, be a magnetic pole, constitute two magnetic loops independently with another magnetic pole in C shape parts substantial middle with the magnet steel at C shape two ends.
2. the magnetic circuit of electromagnetic relay as claimed in claim 1 is characterized in that described insulating material is injection-moulded in " C " shape parts, or wraps up or be coated on " C " shape parts.
3. the magnetic circuit of electromagnetic relay as claimed in claim 1 it is characterized in that being provided with supporting member below movable magnetic conductor, and supporting member is nonmetallic materials.
4. the magnetic circuit of electromagnetic relay as claimed in claim 1 is characterized in that the cross section of described magnet steel is identical, magnetic field intensity even and left-right symmetric.
5. the magnetic circuit of electromagnetic relay as claimed in claim 4 is characterized in that at a pole-face of described movable magnetic conductor one antifreeze plate being set, and makes the magnetic field intensity of magnetic circuit inhomogeneous.
6. the magnetic circuit of the electromagnetic relay described in claim 1 is characterized in that described static magnetic conductor is positioned over magnetic field intensity evenly but the two ends of the inconsistent magnet steel of cross section.
7. the magnetic circuit of the electromagnetic relay described in claim 1, it is characterized in that described static magnetic conductor is positioned over that cross section is identical, magnetic field intensity evenly but the two ends of the asymmetric magnet steel in the left and right sides.
8. the method for work of the magnetic circuit of an electromagnetic relay, magnetic circuit comprises two static magnetic conductors, magnet steel, coil and movable magnetic conductor, two static magnetic conductors are positioned over the two ends of described magnet steel, the three forms one " C " shape parts, is a magnetic pole, constitutes two first, second magnetic loops independently with another magnetic pole in C shape parts substantial middle with the magnet steel at C shape parts two ends; The cross section of described magnet steel is identical, magnetic field intensity even and left-right symmetric, two uniform first magnetic loops of magnetic field intensity (51) in the magnetic circuit, second magnetic loop (52) have been formed, do not giving under the condition of coil (13) power supply, there are two stable states in described magnetic circuit, resets and SM set mode; Under the reset mode, because second pole-face (31b) of described movable magnetic conductor (31) is fitted with the pole-face (11b) of the second static magnetic conductor (11c), and the pole-face (11a) of first pole-face (31a) of movable magnetic conductor and the first static magnetic conductor has air gap, so the magnetic force of second magnetic loop (52) makes relay remain on reset mode greater than the magnetic force of first magnetic loop (51); At reset mode, when instantaneous set driving voltage being provided for described coil (13), the magnetic field of second magnetic loop (52) is resisted in the magnetic field that described coil (13) produces, and strengthen the magnetic field of first magnetic loop (51), make second pole-face (31b) of described movable magnetic conductor (31) and the pole-face (11b) of the described second static magnetic conductor (11c) break away from, and first pole-face (31a) of described movable magnetic conductor (31) is fitted with the pole-face (11a) of the described first static magnetic conductor (11c), remove the driving voltage of coil (13) afterwards, the magnetic force of first magnetic loop (51) is greater than the magnetic force of second magnetic loop (52), and magnetic circuit remains on SM set mode; In SM set mode, when instantaneous resetting voltage being provided for described coil (13), magnetic circuit is returned to reset mode again; And so forth, the contact component of feasible and movable magnetic conductor interlock cut-offs.
9. the method for work of the magnetic circuit of an electromagnetic relay, magnetic circuit comprises two static magnetic conductors, magnet steel, coil and movable magnetic conductor, it is characterized in that two static magnetic conductors are positioned over the two ends of described magnet steel, the three forms one " C " shape parts, is a magnetic pole, constitutes two first and second magnetic loops independently with another magnetic pole in C shape parts substantial middle with the magnet steel at C shape two ends; Because the magnetic field intensity of first magnetic loop (51), second magnetic loop (52) is inhomogeneous in the magnetic circuit, not give under the condition of coil (13) power supply, described magnetic circuit only exists stable state, i.e. release condition; Under the release condition, because the magnetic force of second magnetic loop (52) is greater than the magnetic force of first magnetic loop (51), second pole-face (31b) of described movable magnetic conductor (31) is fitted with the pole-face (11b) of the described second static magnetic conductor (11c), and first pole-face (31a) of the movable magnetic conductor (31) of the other end is thrown off with the pole-face (11a) of the first static magnetic conductor, and relay remains on release condition; In release condition, give described coil (13) when driving voltage is provided, the magnetic field of second magnetic loop (52) is resisted in the magnetic field that described coil (13) produces, and strengthen the magnetic field of first magnetic loop (51), make second pole-face (31b) of described movable magnetic conductor (31) and the pole-face (11b) of the described second static magnetic conductor (11c) break away from, and first pole-face (31a) of described movable magnetic conductor (31) is fitted with the pole-face (11a) of the described first static magnetic conductor (11c), and relay is in operate condition; Behind the driving voltage that removes coil (13), because the magnetic force of second magnetic loop (52) is greater than the magnetic force of first magnetic loop (51), magnetic circuit is returned to release condition; And so forth, the contact component of feasible and movable magnetic conductor interlock cut-offs.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510043746A CN1881506B (en) | 2005-06-14 | 2005-06-14 | Electromagnetic relay magnetic circuit and its working method |
| PCT/CN2006/000599 WO2006125360A1 (en) | 2005-05-19 | 2006-04-05 | A magnetic circuit of a electromagnetic relay and an operating method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510043746A CN1881506B (en) | 2005-06-14 | 2005-06-14 | Electromagnetic relay magnetic circuit and its working method |
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| Publication Number | Publication Date |
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| CN1881506A CN1881506A (en) | 2006-12-20 |
| CN1881506B true CN1881506B (en) | 2010-05-05 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1881507B (en) * | 2005-06-14 | 2010-05-05 | 厦门宏发电声有限公司 | Magnetic circuit of electromagnetic relay and its working method |
| CN109920700A (en) * | 2018-12-31 | 2019-06-21 | 浙江英洛华新能源科技有限公司 | High magnetic force relay |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2819450Y (en) * | 2005-06-14 | 2006-09-20 | 厦门宏发电声有限公司 | Magnetic path of electromagnetic relay |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2819450Y (en) * | 2005-06-14 | 2006-09-20 | 厦门宏发电声有限公司 | Magnetic path of electromagnetic relay |
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Address after: 361000, No. 91-101 South South Road, Jimei Industrial Zone, Xiamen, Fujian Patentee after: Xiamen Hongfa Electroacoustic Co., Ltd. Address before: 361000, No. 91-101 South South Road, Jimei Industrial Zone, Xiamen, Fujian Patentee before: Hongfa Electroacoustic Co., Ltd, Xiamen |
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Effective date of registration: 20161013 Address after: 361026 No. 83 Nong Road, Haicang District, Fujian, Xiamen Patentee after: Xiamen Hongfa Electronics Co., Ltd. signal Address before: 361000, No. 91-101 South South Road, Jimei Industrial Zone, Xiamen, Fujian Patentee before: Xiamen Hongfa Electroacoustic Co., Ltd. |