CN216054496U - Arc extinguishing accessory and clapper formula arc extinguishing electromagnetic relay - Google Patents
Arc extinguishing accessory and clapper formula arc extinguishing electromagnetic relay Download PDFInfo
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- CN216054496U CN216054496U CN202122537640.4U CN202122537640U CN216054496U CN 216054496 U CN216054496 U CN 216054496U CN 202122537640 U CN202122537640 U CN 202122537640U CN 216054496 U CN216054496 U CN 216054496U
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- electromagnetic relay
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Abstract
The utility model provides an arc extinguishing accessory and a clapper type arc extinguishing electromagnetic relay. The arc extinguishing accessory comprises an accessory body, the accessory body is detachably arranged outside the shell of the clapper type electromagnetic relay, at least one pair of magnetic bodies is arranged on the accessory body, and when the accessory body is arranged outside the clapper type electromagnetic relay, moving and static contacts of the clapper type electromagnetic relay are positioned between the paired magnetic bodies; or the accessory body is provided with a magnetic body, and when the accessory body is arranged outside the clapper type electromagnetic relay, the moving contact and the static contact of the clapper type electromagnetic relay are positioned on one side of the magnetic body. Under the condition that the structure of the existing clapper type electromagnetic relay is not changed, the arc extinguishing accessory is installed outside the existing electromagnetic relay, and the moving contact and the static contact of the clapper type electromagnetic relay are positioned between the magnetic bodies to realize arc extinguishing, so that the contacts can be protected, the power-on capacity of the existing clapper type electromagnetic relay is improved, the cost is low, and the clapper type electromagnetic relay has high economic value.
Description
Technical Field
The utility model relates to the technical field of relays, in particular to an arc extinguishing accessory and a clapper type arc extinguishing electromagnetic relay.
Background
The existing clapper type electromagnetic relay generally comprises a base, a magnetic circuit part and a contact part, wherein the base is generally used for bearing the magnetic circuit part and the contact part, the contact part generally comprises a movable spring and a static spring, the movable spring comprises a movable spring piece and a movable contact, the static spring comprises a static contact and a lead-out piece, the magnetic circuit part comprises a coil, an armature and a yoke, and the armature is generally matched at a knife edge of the yoke to realize clapper type work. In the existing clapper type electromagnetic relay, no matter the contact structure is a single-breakpoint or double-breakpoint contact structure, electric arcs are easily formed between contacts, and the electric arcs can seriously ablate contacts. Especially under the very big electric current high voltage condition, the stable contact of contact can't be guaranteed to the pressure between the contact, and the contact is switched over repeatedly under break off, closed two kinds of states, and the relay burns out very fast, has very big explosion risk, can't use in the big direct current scene of high pressure.
Therefore, in the prior art, in order to realize the switching off and the switching on of high-voltage and large-direct-current, on one hand, an arc extinguishing component is usually arranged in the clapper type electromagnetic relay to extinguish the arc; on the other hand, the high-voltage high-current relay is realized by adopting a special structure, for example, the existing high-voltage high-current relay generally adopts a solenoid structure, and contacts are placed in a sealing environment, so that high-voltage high-current switching can be realized under a short contact gap, but the high-voltage high-current relay is complex in process and high in price.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects in the prior art, the utility model aims to provide an arc extinguishing accessory and a clapper type arc extinguishing electromagnetic relay.
In order to achieve the above object, according to a first aspect of the present invention, there is provided an arc-extinguishing fitting including a fitting body detachably mounted outside a housing of a clapper type electromagnetic relay, the fitting body adopting one of the following technical solutions:
the first scheme is as follows: the accessory body is provided with at least one pair of magnetic bodies, and when the accessory body is arranged outside the clapper type electromagnetic relay, the moving and static contacts of the clapper type electromagnetic relay are positioned between the paired magnetic bodies;
scheme II: the magnetic body is arranged on the accessory body, and when the accessory body is arranged outside the clapper type electromagnetic relay, the moving contact and the static contact of the clapper type electromagnetic relay are positioned on one side of the magnetic body. The technical scheme is as follows: under the condition that the structure of the existing clapper type electromagnetic relay is not changed, the arc extinguishing accessory is installed outside the existing electromagnetic relay, and the moving and static contacts of the clapper type electromagnetic relay are positioned between the magnetic bodies or one side of the magnetic bodies to realize arc extinguishing, so that the contacts can be protected, the electrifying capacity of the existing clapper type electromagnetic relay is improved, the cost is low, and the electromagnetic relay has economic value.
In a preferred embodiment of the utility model, in the first scheme, the magnetic pole surfaces of the two magnetic bodies are parallel to the attraction direction of the movable contact of the relay; in the second scheme, the magnetic pole surface of the magnetic body is vertical to the attraction direction of the movable contact of the relay.
The technical scheme is as follows: realize the arc extinguishing through different structures, protect the contact, increase current clapper formula electromagnetic relay's circular telegram ability.
In a preferred embodiment of the utility model, the fitting body is an adhesive or a shell.
The technical scheme is as follows: when the accessory body is a bonding piece, the installation and implementation are convenient, and the structure is simple. The accessory body is an adhesive shell, so that the accessory is convenient to disassemble.
In a preferred embodiment of the present invention, the casing is a sealing casing capable of sealing the clapper electromagnetic relay when the casing is mounted outside the clapper electromagnetic relay.
The technical scheme is as follows: the arc extinguishing effect is enhanced through the sealing effect of the shell sleeve, so that the electrifying capacity of the clapper type electromagnetic relay is increased, and high-voltage and large-direct-current on-off control is performed.
In a preferred embodiment of the present invention, the two magnetic bodies of each pair of magnetic bodies in the first embodiment are arranged oppositely.
The technical scheme is as follows: the magnetic field between the two magnetic bodies is enhanced.
In a preferred embodiment of the present invention, when the accessory body is mounted outside the clapper type electromagnetic relay, two magnetic bodies of at least one pair of magnetic bodies are positioned on the same straight line with the moving and static contacts of the clapper type electromagnetic relay.
The technical scheme is as follows: the arc extinguishing effect is enhanced.
In a preferred embodiment of the present invention, the magnetic poles of the two magnetic bodies of the pair of magnetic bodies are an N pole, an S pole, an N pole, and an S pole in this order.
The technical scheme is as follows: further enhancing the arc extinguishing effect.
In order to achieve the above object, according to a second aspect of the present invention, there is provided a clapper type arc extinguishing electromagnetic relay including a clapper type electromagnetic relay having a movable contact between two opposing magnetic bodies or on one side of a separate magnetic body, and an arc extinguishing accessory according to the present invention mounted outside the clapper type electromagnetic relay.
The technical scheme is as follows: under the condition that the structure of the existing clapper type electromagnetic relay is not changed, the arc extinguishing accessory is installed outside the existing electromagnetic relay, and the moving contact and the static contact of the clapper type electromagnetic relay are positioned between the magnetic bodies to realize arc extinguishing, so that the contacts can be protected, the power-on capacity of the existing clapper type electromagnetic relay is improved, the cost is low, and the clapper type electromagnetic relay has high economic value.
In a preferred embodiment of the present invention, when a pair of magnetic bodies is used, the magnetic poles of the two magnetic bodies of the pair of magnetic bodies are an N pole, an S pole, an N pole, and an S pole in this order.
The technical scheme is as follows: further enhancing the arc extinguishing effect.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is an assembly view of an arc extinguishing electromagnetic relay in a first preferred embodiment of the present invention, wherein (a) is a first view, (b) is a second view, and (c) is a third view;
fig. 2 is an assembly view of an arc extinguishing electromagnetic relay in a second preferred embodiment of the present invention, wherein (a) is a first view angle and (b) is a second view angle.
Reference numerals: 1 a magnetic body; 2 a magnetic body; 3, covering the relay; 4, a bottom shell of the relay; 5, moving a contact; 6, a static contact; 7, a shell sleeve; 8 magnetic body.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be interpreted broadly, and may be, for example, a mechanical connection or an electrical connection, a communication between two elements, a direct connection, or an indirect connection via an intermediate medium, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.
The utility model discloses an arc-extinguishing accessory, which comprises an accessory body in a preferred embodiment, wherein the accessory body is detachably arranged outside a shell of a clapper type electromagnetic relay (namely, the external part of an upper cover 3 and/or a bottom shell 4 of the relay in figures 1 and 2 and the external part of a shell sleeve 7 in other preferred embodiments), and one of the following technical schemes can be adopted for the specific accessory body:
first, as shown in fig. 1, at least a pair of magnetic bodies (i.e., magnetic body 1 and magnetic body 2 in the figure) is provided on the accessory body, and when the accessory body is mounted outside the clapper type electromagnetic relay, the movable contact 5 and the stationary contact 6 of the clapper type electromagnetic relay are located between the magnetic bodies 1 and 2.
In the second embodiment, as shown in fig. 2, a magnetic body 8 is provided on the accessory body, and when the accessory body is mounted outside the clapper type electromagnetic relay, the movable contact 5 and the stationary contact 6 of the clapper type electromagnetic relay are located on one side of the magnetic body.
In the first embodiment, the magnetic induction surfaces of the two magnetic bodies are parallel to the attraction direction of the movable contact of the relay; in the second scheme, the magnetic induction surface of the magnetic body is vertical to the attraction direction of the movable contact of the relay.
In the first embodiment, it is preferable that the center of the magnetic induction surface of the magnetic body coincides with the center point of the line connecting the moving contact and the stationary contact in the separated state or the closed state. Preferably, in the second scheme, the center of the magnetic induction surface of the magnetic body coincides with the central point of the moving contact and the static contact, so that magnetic induction lines of the magnetic body penetrate through the moving contact and the static contact as much as possible, and the arc extinguishing effect is improved.
In the present embodiment, the accessory body may be directly mounted on the outer surface of the housing (including the exterior of the relay upper cover 3 and the relay bottom case 4) of the clapper type electromagnetic relay, may also be mounted on the exterior of the housing of the clapper type electromagnetic relay without contacting the housing, or may also be mounted on the outer surface of the housing of the clapper type electromagnetic relay with one part of the accessory body contacting the housing of the clapper type electromagnetic relay and the other part not contacting the housing of the clapper type electromagnetic relay. The detachable connection is preferably, but not limited to, a contact connection or an adhesive or magnet-snap connection.
In the present embodiment, in order to enhance the arc extinguishing effect as much as possible, it is preferable that the two magnetic bodies of each pair of magnetic bodies are provided to be opposed to each other as shown in fig. 1. Further preferably, when the accessory body is installed outside the clapper type electromagnetic relay, the two magnetic bodies of the at least one pair of magnetic bodies and the moving and static contacts of the clapper type electromagnetic relay are located on the same straight line, and the two magnetic bodies belonging to the same pair are located on two sides of the moving and static contacts of the clapper type electromagnetic relay respectively. More preferably, the magnetic poles of the two magnetic bodies of the pair of magnetic bodies are an N pole, an S pole, an N pole, and an S pole in this order.
In this embodiment, the accessory body is preferably, but not limited to, a [ -shaped frame or a "C" -shaped frame that can be fitted around the outer shell of the clapper type electromagnetic relay, at least one magnetic body is disposed at each of two ends of an opening of the [ -shaped frame or the "C" -shaped frame, and two opposing magnetic bodies disposed at each of the two ends of the opening can be combined into a pair of magnetic bodies. When the [ -shaped frame or the C-shaped frame is arranged on the outer shell of the clapper type electromagnetic relay or outside the outer shell, the movable and static contacts of the clapper type electromagnetic relay are positioned between the openings.
In this embodiment, when the accessory body is installed outside the clapper type electromagnetic relay, the moving and static contacts of the clapper type electromagnetic relay are located between the magnetic bodies, specifically, the moving and static contacts of the clapper type electromagnetic relay are located between two magnetic bodies of the same pair of magnetic bodies, or located between two magnetic bodies belonging to different pairs of magnetic bodies. Arc extinguishing is carried out by utilizing magnetic fields generated by magnetic bodies on two sides of moving and static contacts of the clapper type electromagnetic relay.
In a preferred embodiment, the fitting body is a housing 7 that can be fitted over the housing of a clapper electromagnetic relay.
In this embodiment, preferably, the shell is a sealed shell, and when the shell is installed outside the clapper-type electromagnetic relay, the clapper-type electromagnetic relay can be sealed, and the shell has no gap, so that the air ionization path is isolated from being enlarged, and the arc extinguishing effect is further improved. Preferably, the shell is metallic.
In a preferred embodiment, the accessory body is the bonding piece, preferably, the accessory body includes two opposite bonding elements of position of pasting on clapping type electromagnetic relay shell, be provided with at least one magnetic substance on the bonding element, can know clapping type electromagnetic relay structure in advance, find the corresponding point on two opposite surfaces on the shell respectively of clapping type electromagnetic relay's sound contact, paste a bonding element at the corresponding point respectively, make the sound contact be located between two pasting elements, and sound contact and two magnetic substances of pasting the element are located same straight line, so that the arc extinguishing and reinforcing arc extinguishing effect.
The utility model also discloses a clapper type arc extinguishing electromagnetic relay, in a preferred embodiment, the clapper type arc extinguishing electromagnetic relay comprises a clapper type electromagnetic relay and the arc extinguishing accessory arranged outside the clapper type electromagnetic relay, the clapper type electromagnetic relay is provided with a movable contact, as shown in figure 1, two magnetic bodies are parallel to the suction direction of the movable contact of the relay, the movable contact is positioned between two opposite magnetic bodies, and preferably, the magnetic poles of the two opposite magnetic bodies are an N pole, an S pole, an N pole and an S pole in sequence. In another preferred embodiment, as shown in fig. 2, when there is only one magnetic body, the magnetic body is perpendicular to the attracting direction of the movable contact of the relay, and the movable contact is located at one side of the magnetic body.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (9)
1. An arc extinguishing accessory is characterized by comprising an accessory body, wherein the accessory body is detachably arranged outside a shell of a clapper type electromagnetic relay;
the accessory body adopts one of the following technical schemes:
the first scheme is as follows: the accessory body is provided with at least one pair of magnetic bodies, and when the accessory body is arranged outside the clapper type electromagnetic relay, the moving and static contacts of the clapper type electromagnetic relay are positioned between the paired magnetic bodies;
scheme II: the magnetic body is arranged on the accessory body, and when the accessory body is arranged outside the clapper type electromagnetic relay, the moving contact and the static contact of the clapper type electromagnetic relay are positioned on one side of the magnetic body.
2. The arc extinguishing accessory of claim 1, wherein in case one, the magnetic pole faces of the two magnetic bodies are parallel to the attracting direction of the relay moving contact; in the second scheme, the magnetic pole surface of the magnetic body is vertical to the attraction direction of the movable contact of the relay.
3. The arc extinguishing fitting according to claim 1, wherein the fitting body is an adhesive or a shell.
4. An arc extinguishing fitting according to claim 3, wherein the housing is a sealed housing capable of sealing a clapper electromagnetic relay when the housing is mounted externally of the clapper electromagnetic relay.
5. The arc suppressing accessory of claim 1, wherein the two magnets of each pair of magnets in the first embodiment are oppositely disposed.
6. The arc extinguishing accessory according to claim 5, wherein when the accessory body is mounted on the exterior of the clapper type electromagnetic relay, the two magnetic bodies of the at least one pair of magnetic bodies are aligned with the moving and static contacts of the clapper type electromagnetic relay.
7. The arc extinguishing fitting according to claim 6, wherein the magnetic poles of the two magnetic bodies of the pair of magnetic bodies are an N pole, an S pole, an N pole and an S pole in this order.
8. A clapper arc extinguishing electromagnetic relay, characterized in that, the clapper arc extinguishing electromagnetic relay comprises a clapper electromagnetic relay and an arc extinguishing accessory according to one of the claims 1 to 6 arranged outside the clapper electromagnetic relay, wherein the clapper electromagnetic relay is provided with a movable contact which is positioned between two opposite magnetic bodies or is positioned on one side of the independent magnetic bodies.
9. A clapper type arc extinguishing electromagnetic relay according to claim 8, wherein when the paired magnetic bodies are used, the magnetic poles of the two magnetic bodies of the paired magnetic bodies are N pole, S pole, N pole, S pole in this order.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122537640.4U CN216054496U (en) | 2021-10-21 | 2021-10-21 | Arc extinguishing accessory and clapper formula arc extinguishing electromagnetic relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122537640.4U CN216054496U (en) | 2021-10-21 | 2021-10-21 | Arc extinguishing accessory and clapper formula arc extinguishing electromagnetic relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216054496U true CN216054496U (en) | 2022-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122537640.4U Active CN216054496U (en) | 2021-10-21 | 2021-10-21 | Arc extinguishing accessory and clapper formula arc extinguishing electromagnetic relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216054496U (en) |
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2021
- 2021-10-21 CN CN202122537640.4U patent/CN216054496U/en active Active
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