CN213660311U - Double-contact magnetic latching relay - Google Patents
Double-contact magnetic latching relay Download PDFInfo
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- CN213660311U CN213660311U CN202023215918.8U CN202023215918U CN213660311U CN 213660311 U CN213660311 U CN 213660311U CN 202023215918 U CN202023215918 U CN 202023215918U CN 213660311 U CN213660311 U CN 213660311U
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Abstract
The utility model discloses a double-contact magnetic latching relay, the movable reed of which comprises a first reed and a second reed which are arranged in parallel, the first reed is provided with a first movable contact, and the second reed is provided with a second movable contact; the horizontal heights of the first movable contact and the second movable contact are consistent, the area of the first movable contact is larger than that of the second movable contact, the overall contact resistance can be reduced after the smaller movable contact is connected, and the arrangement of the two contacts can reduce electric arcs generated when a circuit is connected, so that the service life of the relay is prolonged; the yoke comprises a first yoke and a second yoke, the first yoke and the second yoke form an n-shaped opening part, and the opening part is positioned on one side of the yoke fixedly connected with the iron core; the magnetic steel is positioned in the opening of the opening part; the first magnetic circuit formed by the magnetic steel cannot pass through the iron core and the armature, and when the relay is not electrified, suction force cannot be generated, namely the condition of mistaken attraction cannot be generated.
Description
Technical Field
The utility model belongs to the technical field of the relay processing, especially, relate to a double contact magnetic latching relay.
Background
The relay is an electronic control device, and has the functions of automatic regulation, safety protection and circuit conversion, etc. its working principle is that a certain voltage is applied to two ends of coil, and a certain current can be flowed in the coil so as to produce electromagnetic effect on the magnetic circuit, and the armature can overcome the pulling force of return spring and can be attracted toward armature under the action of electromagnetic force attraction so as to drive the movable contact on the movable spring and the static contact on the static spring to make attraction and make them implement conduction action in the circuit.
The contact opening and closing system of a typical relay is shown in fig. 1: including base 6, yoke 1, armature 2 and reed 4, wherein, the reed includes static reed 41 and movable reed 42, and the relay of this structure is single contact structure (through the closure of a pair of contact with open the closure and the cutting off of accomplishing electric loop), behind the contact switch-on load, because the electric arc that produces during the break-make to the consumption of contact, thereby can lead to contact surface wearing and tearing to make the contact resistance when putting through rise, and then lead to the rise aggravation of relay product temperature, cause the problem that the relay reliability is poor, short-lived.
In addition, the magnetic latching technology of the clapper magnetic circuit system is to mount magnetic steel on a yoke (with two modes of yoke integration and yoke split riveting), for example, the publication number is: CN103426690B, a chinese patent document, discloses a magnetic latching relay with parallel magnetic circuit, which has the disadvantage that the space left for the coil is reduced due to the influence of yoke and magnetic steel, resulting in the power requirement of the coil being increased; in addition, because the yoke needs to be riveted with the coil and the iron core integrally to be installed in the relay base, the difficulty of the production process is increased due to the existence of the magnetic steel and the auxiliary yoke, and the implementation of automation is not facilitated.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the main technical problem who solves provides a double contact magnetic latching relay, and it has two, can reduce whole contact resistance after wherein less movable contact switches on, and the electric arc that produces when setting up of two contact points can reduce the circuit switch-on improves the life of relay. The magnetic latching part and the first magnetic circuit formed by the magnetic steel are positioned at the fixed end of the iron core and cannot pass through the iron core and the armature, so that when the relay is not electrified, suction force cannot be generated, and the condition of mistaken attraction cannot be generated.
In order to solve the technical problem, the utility model discloses a technical scheme be:
a double-contact magnetic latching relay comprises a yoke iron, an armature iron, an iron core and a spring plate which are arranged on a base, wherein a coil is wound on the periphery of the iron core, and the spring plate comprises a static spring plate and a movable spring plate;
the movable spring plate comprises a first spring plate and a second spring plate which are arranged in parallel, one end of the first spring plate is fixedly connected with one end of the second spring plate, a first movable contact is fixedly arranged at the other end of the first spring plate, and a second movable contact is fixedly arranged at the other end of the second spring plate;
the horizontal heights of the first movable contact and the second movable contact are consistent, the fixed spring piece is provided with two fixed contacts which are respectively contacted with the first movable contact and the second movable contact, and the contact area of the first movable contact and the fixed contacts is larger than that of the second movable contact and the fixed contacts;
the yoke comprises a first yoke and a second yoke, wherein an n-shaped opening part is formed by the first yoke and the second yoke and is positioned on one side of the yoke fixedly connected with the iron core;
the relay is further provided with magnetic steel, the magnetic steel is a permanent magnet, the magnetic steel is located in the opening of the opening, the magnetic steel, the first yoke and the second yoke form a first magnetic circuit, and the first magnetic circuit does not pass through the armature.
Further, the first yoke and the second yoke are of an integral structure;
or the first yoke and the second yoke are of a split structure and are fixedly connected.
The first yoke is in an L shape, the first yoke of the L shape includes a horizontal yoke and a vertical yoke, the iron core is riveted with the horizontal yoke, the armature is elastically connected with the vertical yoke through a spring, the second yoke is arranged in parallel with the horizontal yoke, and the second yoke and the horizontal yoke form the opening.
Further, the iron core has a pole shoe at a suction end with the armature.
Further, the movable spring plate is provided with an opening, the opening part penetrates through the movable spring plate, the opening divides the movable spring plate into the first spring plate and the second spring plate, and the first spring plate and the second spring plate are of an integral structure.
Furthermore, the bodies of the first reed and the second reed are provided with C-shaped protruding parts, the protruding parts are provided with penetrating openings penetrating through the bodies, and the penetrating openings are arranged along the length direction of the reeds.
Furthermore, the movable spring plate is formed by overlapping a plurality of spring plate bodies, the plurality of spring plate bodies are provided with the protruding parts, gaps are formed between the protruding parts of adjacent spring plate bodies, and the gaps between every two adjacent spring plate bodies are equal.
Further, the plurality of elastic sheet bodies are fixed by riveting.
The utility model has the advantages that:
the utility model discloses a relay has two movable contact springs, movable contact on two movable contact springs can both realize the route with the stationary contact point contact on the stationary contact spring, because two movable contact are that the horizontal direction sets up the contact conduction time that can two movable contact of assurance of at utmost side by side the same, and two movable contact's area of contact with the stationary contact is different, when the circuit switches on, wherein great movable contact is the main route, less movable contact is vice route, reduce the whole contact resistance after the switch-on through vice route, and the electric arc that produces when setting up of two contact points can reduce the circuit switch-on, the life of relay is improved.
The magnetic steel of the relay, the first yoke and the second yoke form a first magnetic circuit (a permanent magnetic circuit), the magnetic circuit cannot pass through the iron core and the armature at the fixed end of the iron core, so that when the relay is not electrified (namely the armature is not attracted), suction force cannot be generated, namely, the condition of mistaken attraction cannot be generated, the armature is attracted with the iron core after the coil is electrified, a closed second magnetic circuit B1 is formed among the yoke, the iron core and the armature, the magnetic path of the first magnetic circuit generated by the magnetic steel can be changed into (or partially changed into) a closed loop which is the same as the second magnetic circuit, and when the coil is powered off and the armature is separated from attraction, the permanent magnetic circuit generated by the magnetic steel can be continuously kept in the closed loop of the second magnetic circuit to form magnetic keeping.
In addition, because the magnetic circuit is the reverse insertion structure, magnet steel and second yoke are located the outside of relay magnetic circuit, have avoided because the yoke need carry out the problem that can pack into the relay base after whole riveting with coil and iron core, more do benefit to automatic implementation.
The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings.
Drawings
Fig. 1 is a schematic diagram of the overall structure of a typical relay in the prior art;
fig. 2 is a schematic diagram of the overall structure of the relay of the present invention;
fig. 3 is a schematic structural view of the movable spring plate of the present invention;
fig. 4 is an exploded schematic view of the movable spring plate of the present invention;
fig. 5 is a schematic structural diagram of a yoke and magnetic steel of the relay of the present invention;
fig. 6 is a schematic magnetic steel circuit diagram of the relay of the present invention (coil is not energized, armature is open);
fig. 7 is a schematic magnetic steel circuit diagram (coil energized, armature closed) of the relay of the present invention;
fig. 8 is a schematic magnetic steel circuit diagram of the relay of the present invention (the coil is powered off, the armature remains closed);
the parts in the drawings are marked as follows:
the yoke 1, the first yoke 11, the horizontal yoke 111, the vertical yoke 112, the second yoke 12 and the opening 13;
an armature 2;
the spring plate 4, the fixed spring plate 41, the movable spring plate 42, the opening 421, the first spring plate 422, the second spring plate 423, the first movable contact 423A, the second movable contact 423B, the protruding part 44 and the spring plate body 45;
Detailed Description
The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.
Example (b):
a dual contact magnetic latching relay, as shown in fig. 2 and 3: the relay comprises a yoke 1, an iron core 3 and a spring leaf 4 which are arranged on a base 6, wherein an armature 2 is elastically connected to the yoke, a coil is wound on the periphery of the iron core, and the spring leaf comprises a static spring leaf 41 and a movable spring leaf 42;
the movable spring plate comprises a first spring plate 422 and a second spring plate 423 which are arranged in parallel, one end of the first spring plate is fixedly connected with one end of the second spring plate, the other end of the first spring plate is fixedly provided with a first movable contact 423A, and the other end of the second spring plate is fixedly provided with a second movable contact 423B;
the first movable contact and the second movable contact have the same horizontal height (the horizontal height refers to the structure in which the spring is vertically arranged in the relay shown in the embodiment, and if the spring is horizontally arranged, the height refers to the position in the horizontal direction is the same), the fixed spring is provided with two fixed contacts which are respectively contacted with the first movable contact and the second movable contact, and the contact area of the first movable contact and the fixed contact is larger than that of the second movable contact and the fixed contact.
The utility model discloses a relay has two movable contact springs, movable contact on two movable contact springs can both realize the route with the stationary contact point contact on the stationary contact spring, because two movable contact are that the horizontal direction sets up the contact conduction time that can two movable contact of assurance of at utmost side by side the same, and two movable contact's area of contact with the stationary contact is different, when the circuit switches on, wherein great movable contact is the main route, less movable contact is vice route, reduce the whole contact resistance after the switch-on through vice route, and the electric arc that produces when setting up of two contact points can reduce the circuit switch-on, the life of relay is improved.
The movable spring plate is provided with an opening 421, the opening part penetrates through the movable spring plate, the movable spring plate is divided into the first spring plate and the second spring plate by the opening, and the first spring plate and the second spring plate are of an integral structure;
the reed of this structure is integrative structure for first reed with the second reed has better mechanical and electrical stability, and is also more convenient moreover with regard to processing, therefore this kind of mode is adopted when this embodiment specifically implements.
Secondly, the first reed and the second reed are in split structures (not shown in the figure), and one ends of the first reed and the second reed are communicated and fixedly connected;
the first reed and the second reed of the structure are of split structures, so that the processing cost is saved.
In this embodiment, the bodies of the first spring plate and the second spring plate are both provided with C-shaped protruding portions 44, and the protruding portions are both provided with through openings 441 penetrating through the bodies, the through openings are arranged along the length direction of the spring plates;
this bellying of "C" font has two beneficial effects, firstly can increase the elasticity and the reliability of reed, makes its actuation swing back many times still can have comparable elasticity, secondly can increase the electric current overcurrent area of circuit, prevents the inefficacy that the heavy current caused, improves the whole life of reed and relay.
As shown in fig. 3 and 4: the movable spring plate is formed by overlapping a plurality of spring plate bodies 45, the plurality of spring plate bodies are provided with the protruding parts, gaps are formed between the protruding parts of adjacent spring plate bodies, and the gaps between every two adjacent spring plate bodies are equal.
Similarly, the structure of the lamination of the multiple spring pieces can increase the current flowing area of the circuit, and compared with a thick spring piece adopting a single spring piece, the situation that the spring piece cannot be bounced because the spring piece is thick and the hardness is high is avoided, and the elasticity of the spring piece is further improved by the protruding part with a gap, so that the service life of the relay is further prolonged.
In this embodiment, it is a plurality of the shell fragment body passes through riveting fixed, adopts riveted mode fixed to have better laminating reliability, and processing is convenient moreover.
As shown in fig. 5: the yoke comprises a first yoke 11 and a second yoke 12, wherein the first yoke and the second yoke form an n-shaped opening part 13, and the opening part is positioned on one side of the yoke fixedly connected with the iron core;
the relay is further provided with magnetic steel 5, the magnetic steel is a permanent magnet, the magnetic steel is located in the opening of the opening, a first magnetic circuit A1 is formed by the magnetic steel, the first yoke and the second yoke, and the first magnetic circuit does not pass through the armature.
The utility model discloses a magnetic latching relay, magnet steel and first yoke and second yoke have constituted first magnetic circuit (permanent magnetism magnetic circuit), and this magnetic circuit is owing the stiff end of iron core can not be through iron core and armature, consequently as shown in fig. 2: when the relay is not electrified (namely, when the armature is not attracted), attraction force cannot be generated, namely, the situation of mistaken attraction cannot be generated, and the coil is electrified as shown in fig. 3: the back armature is attracted with the iron core, a closed second magnetic circuit B1 is formed among the yoke, the iron core and the armature, the first magnetic circuit generated by the magnetic steel can change the magnetic route to be (or partially) a closed loop same as the second magnetic circuit, and when the coil is powered off and the armature is separated from attraction, as shown in figure 4: the permanent magnetic circuit (the first magnetic circuit A1) generated by the magnetic steel can be continuously kept in the closed loop of the second magnetic circuit to form magnetic holding.
In addition, because the magnetic circuit is the reverse insertion structure, magnet steel and second yoke are located the outside of relay magnetic circuit, have avoided because the yoke need carry out the problem that can pack into the relay base after whole riveting with coil and iron core, more do benefit to automatic implementation.
The first yoke and the second yoke can be designed into an integral structure, the first yoke and the second yoke of the integral structure are good in stability, and processing is convenient.
In this embodiment, the first yoke and the second yoke are in a split structure, and the first yoke and the second yoke are fixedly connected, and the fixed connection can be realized by riveting, clamping, welding or the like;
the split structure of the first yoke and the second yoke enables the split structure to be additionally installed on an existing relay, the yoke part of an existing electromagnetic relay coil does not need to be changed, only the second yoke and the magnetic steel part need to be added, the coil space is unchanged, the power consumption of the coil can be reduced, and meanwhile, the combination of the electromagnetic relay coil and the magnetic latching relay coil of the same specification can be shared.
As shown in fig. 2: the position of the magnetic steel is arranged in alignment with the iron core, namely the position of the magnetic steel is arranged on the extension line of the iron core, so that when the permanent magnetic circuit generated by the magnetic steel is changed into a closed loop of a second magnetic circuit, enough magnetic holding force can be achieved.
The iron core is further provided with a pole shoe 31 at the attraction end of the armature, the pole shoe is a protrusion or a groove at the attraction end, and a magnetic circuit gap between the iron core and the armature is adjusted through a height difference formed by the protrusion or the groove and the upper surface of the pole shoe, so that the balance of the attraction force and the reset force of the magnetic circuit on the armature is realized (actually adjusted is a set voltage and a reset voltage).
The first yoke is L-shaped, as shown in fig. 2: the L-shaped first yoke comprises a horizontal yoke 111 and a vertical yoke 112, the iron core is riveted with the horizontal yoke, the armature is elastically connected with the vertical yoke through a reed, the second yoke is arranged in parallel with the horizontal yoke, and the second yoke and the horizontal yoke form the opening part.
In fact, the second yoke also has a short vertical part, which also forms an L shape, and the end of the vertical part is fixedly connected with the first yoke, or the two are directly integrated.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
The utility model discloses a working process and theory of operation as follows:
the utility model discloses a relay has two movable contact springs, movable contact on two movable contact springs can both realize the route with the stationary contact point contact on the stationary contact spring, because two movable contact are that the horizontal direction sets up the contact conduction time that can two movable contact of assurance of at utmost side by side the same, and two movable contact's area of contact with the stationary contact is different, when the circuit switches on, wherein great movable contact is the main route, less movable contact is vice route, reduce the whole contact resistance after the switch-on through vice route, and the electric arc that produces when setting up of two contact points can reduce the circuit switch-on, the life of relay is improved.
The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the same principle as the present invention.
Claims (8)
1. The utility model provides a double contact magnetic latching relay, the relay is including installing yoke (1), iron core (3) and reed (4) in base (6), armature (2) elastic connection in the yoke, the periphery of iron core is around there being the coil, its characterized in that: the reed comprises a static reed (41) and a movable reed (42);
the movable spring plate comprises a first spring plate (422) and a second spring plate (423) which are arranged in parallel, one end of the first spring plate is fixedly connected with one end of the second spring plate, the other end of the first spring plate is fixedly provided with a first movable contact (423A), and the other end of the second spring plate is fixedly provided with a second movable contact (423B);
the horizontal heights of the first movable contact and the second movable contact are consistent, the fixed spring piece is provided with two fixed contacts which are respectively contacted with the first movable contact and the second movable contact, and the contact area of the first movable contact and the fixed contacts is larger than that of the second movable contact and the fixed contacts;
the yoke comprises a first yoke (11) and a second yoke (12), wherein an n-shaped opening part (13) is formed by the first yoke and the second yoke and is positioned on one side of the yoke fixedly connected with the iron core;
the relay is further provided with magnetic steel (5), the magnetic steel is a permanent magnet and is located in the opening of the opening, a first magnetic circuit (A1) is formed by the magnetic steel, the first yoke and the second yoke, and the first magnetic circuit does not pass through the armature.
2. The dual-contact magnetic latching relay of claim 1, wherein: the first yoke iron and the second yoke iron are of an integral structure;
or the first yoke and the second yoke are of a split structure and are fixedly connected.
3. The dual-contact magnetic latching relay of claim 1, wherein: the first yoke is L-shaped, the L-shaped first yoke comprises a horizontal yoke (111) and a vertical yoke (112), the iron core is riveted with the horizontal yoke, the armature is elastically connected with the vertical yoke through a reed, the second yoke is arranged in parallel with the horizontal yoke, and the second yoke and the horizontal yoke form the opening part.
4. The dual-contact magnetic latching relay of claim 1, wherein: the iron core is provided with a pole shoe (31) at the attracting end of the iron core and the armature.
5. The dual-contact magnetic latching relay of claim 1, wherein: the movable spring plate is provided with an opening (421), the opening part penetrates through the movable spring plate, the opening divides the movable spring plate into a first spring plate and a second spring plate, and the first spring plate and the second spring plate are of an integral structure.
6. The dual-contact magnetic latching relay of claim 1, wherein: the body of each of the first reed and the second reed is provided with a C-shaped protruding part (44), the protruding parts are provided with penetrating openings (441) penetrating through the body, and the penetrating openings are arranged along the length direction of the reeds.
7. The dual-contact magnetic latching relay of claim 6, wherein: the movable spring plate is formed by overlapping a plurality of spring plate bodies (45), the plurality of spring plate bodies are provided with the protruding parts, gaps are formed between the protruding parts of adjacent spring plate bodies, and the gaps between every two adjacent spring plate bodies are equal.
8. The dual-contact magnetic latching relay of claim 7, wherein: the elastic sheet bodies are fixed through riveting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023215918.8U CN213660311U (en) | 2020-12-28 | 2020-12-28 | Double-contact magnetic latching relay |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023215918.8U CN213660311U (en) | 2020-12-28 | 2020-12-28 | Double-contact magnetic latching relay |
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| CN213660311U true CN213660311U (en) | 2021-07-09 |
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| CN202023215918.8U Active CN213660311U (en) | 2020-12-28 | 2020-12-28 | Double-contact magnetic latching relay |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114649164A (en) * | 2022-04-15 | 2022-06-21 | 徐州乔南仪表有限公司 | Novel armature subassembly for relay |
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2020
- 2020-12-28 CN CN202023215918.8U patent/CN213660311U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114649164A (en) * | 2022-04-15 | 2022-06-21 | 徐州乔南仪表有限公司 | Novel armature subassembly for relay |
| CN114649164B (en) * | 2022-04-15 | 2023-03-03 | 徐州乔南仪表有限公司 | Armature subassembly for relay |
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