CN217061826U - Cut off electric arc extinguishing device - Google Patents
Cut off electric arc extinguishing device Download PDFInfo
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- CN217061826U CN217061826U CN202220646130.2U CN202220646130U CN217061826U CN 217061826 U CN217061826 U CN 217061826U CN 202220646130 U CN202220646130 U CN 202220646130U CN 217061826 U CN217061826 U CN 217061826U
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Abstract
The utility model relates to a cut-off arc extinguishing device, which comprises a shell with a static contact and a moving contact, wherein one side of the shell is connected with a moving shaft in a sliding way, a through hole for accommodating the moving contact is penetrated through one side of the moving shaft, and one end of the moving contact penetrates through the through hole to be matched with the static contact; the shell is further provided with an arc isolating mechanism between the fixed contact and the movable shaft, the fixed contact, the movable contact and the arc isolating mechanism are arranged in a delta shape, when the movable shaft drives the movable contact to move towards the direction of the arc isolating mechanism to achieve disconnection of the movable contact and the fixed contact, the movable contact synchronously triggers the arc isolating mechanism to move towards the direction of the arc isolating mechanism, the movable contact can drive the movable contact and the fixed contact to be separated, the movable contact triggers the arc isolating mechanism to start in the process of separation of the movable contact and the fixed contact, and therefore electric arcs generated by separation of the movable contact and the fixed contact are isolated. The contact fusion welding and damage caused when the moving contact and the static contact open the circuit in the atmosphere can be avoided, and the use risk is further reduced.
Description
Technical Field
The utility model relates to an electrical control technical field, in particular to cut off electric arc extinguishing device.
Background
With the development of social economy and the improvement of the living standard of people, the requirements of users on the reliability and continuity of power supply are higher and higher, and the power failure caused by equipment damage can cause huge economic loss and serious social influence. In the automatic change-over switch in the prior art, a moving contact and a fixed contact are arranged, so that the positions of the moving contact and the fixed contact are required to be changed relatively to realize circuit breaking.
In practical application, the dual-power automatic transfer switch generally adopts a forced breaking mode to generate electric arcs, when a moving contact and a fixed contact open a circuit in the atmosphere, as long as the voltage exceeds 12-20V, the cut-off current exceeds 0.25-1A, the high temperature of the electric arcs often easily causes the contact to be welded and damaged, and the damage is large, so that improvement is needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a cut off electric arc extinguishing device can avoid sound contact to cause contact fusion welding and damage when the open circuit in the atmosphere, and then reduces the use risk.
The above technical purpose of the present invention can be achieved by the following technical solutions:
an arc extinguishing device for cutting off an electric arc comprises a shell with a static contact and a moving contact, wherein a moving shaft is connected to one side of the shell in a sliding manner, a through hole for accommodating the moving contact penetrates through one side of the moving shaft, and one end of the moving contact penetrates through the through hole to be matched with the static contact;
the shell is also provided with an arc isolating mechanism between the static contact and the movable shaft, the static contact, the movable contact and the arc isolating mechanism are arranged in a delta shape, and when the movable shaft drives the movable contact to move towards the direction of the arc isolating mechanism so as to realize the disconnection of the movable contact and the static contact, the movable contact synchronously triggers the arc isolating mechanism to isolate arcs.
To sum up, the utility model discloses following beneficial effect has:
the movable shaft moves towards the direction of the arc isolating mechanism, so that the movable shaft can drive the movable contact and the fixed contact to be separated, and the movable contact is used for triggering the arc isolating mechanism to start in the process of separating the movable contact and the fixed contact, thereby isolating the electric arc generated by separating the movable contact and the fixed contact. The contact fusion welding and damage caused when the moving contact and the static contact open the circuit in the atmosphere can be avoided, and the use risk is further reduced.
Drawings
Fig. 1 is a schematic perspective view of the utility model in a closing state of a cut-off arc extinguishing device;
fig. 2 is a schematic front view of the arc-extinguishing device of the present invention in a closing state;
fig. 3 is a front view of the arc-extinguishing device of the present invention in the open state;
fig. 4 is a schematic perspective view of the cut-off arc extinguishing device of the present invention in an open state;
fig. 5 is an explosion schematic diagram of a cut-off arc extinguishing device according to the present invention;
fig. 6 is a schematic view of a housing of a cut-off arc extinguishing device according to the present invention;
fig. 7 is a schematic view of a movable shaft of a cut-off arc extinguishing device according to the present invention;
fig. 8 is a schematic view of an arc isolating mechanism of the arc isolating and extinguishing device of the present invention.
Description of reference numerals: 1. a housing; 2. static contact; 3. a moving contact; 4. a through hole; 5. an arc isolating mechanism; 6. a movable shaft; 7. contraband shaped plates; 8. an arc baffle plate; 9. a rotating shaft; 10. a sliding groove; 11. mounting grooves; 12. a drive plate; 13. and (4) a groove.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 to 8, an arc extinguishing device for cutting off an arc comprises a housing 1 having a static contact 2 and a moving contact 3, wherein one side of the housing 1 is slidably connected with a moving shaft 6, a through hole 4 for accommodating the moving contact 3 is formed through one side of the moving shaft 6, and one end of the moving contact 3 penetrates through the through hole 4 to be matched with the static contact 2;
the shell 1 is further provided with an arc isolating mechanism 5 between the static contact 2 and the movable shaft 6, the static contact 2, the movable contact 3 and the arc isolating mechanism 5 are arranged in a delta shape, and when the movable shaft 6 drives the movable contact 3 to move towards the direction of the arc isolating mechanism 5 so as to disconnect the movable contact 3 from the static contact 2, the movable contact 3 synchronously triggers the arc isolating mechanism 5 to isolate arcs.
The core of the application is that the movable shaft 6 moves towards the direction of the arc isolating mechanism 5, so that the movable contact 3 and the static contact 2 can be driven to be separated, and the movable contact 3 is used for triggering the arc isolating mechanism 5 to start in the process of separating the movable contact 3 and the static contact 2, so that the electric arc generated by separating the movable contact 3 and the static contact 2 is isolated. The contact fusion welding and damage caused when the moving contact and the static contact 2 open the circuit in the atmosphere can be avoided, and the use risk is further reduced.
Further, the arc separating mechanism 5 comprises an Contraband-shaped plate 7 and an L-shaped plate, wherein the L-shaped plate 7 is provided with an opening at one side, and the L-shaped plate is arranged in the opening and is rotatably connected with the L-shaped plate 7. The L-shaped plate comprises an arc isolation plate 8 and a drive plate 12, the arc isolation plate 8 and the drive plate 12 form an L-shaped arrangement, a rotating shaft 9 is arranged at the joint of the arc isolation plate 8 and the drive plate 12, and two ends of the rotating shaft 9 are rotatably connected with the V-shaped plate 7 and the L-shaped plate 21274.
When the movable shaft 6 drives the movable contact 3 to move so as to disconnect the movable contact 3 from the fixed contact 2, the movable contact 3 acts on the driving plate 12 to enable the arc-isolating plate 8 to rotate around the hinged position of the arc-isolating plate so as to separate the movable contact 3 from the fixed contact 2.
In the above, the moving shaft 6 moves to drive the moving contact 3 to move synchronously, so as to separate the moving contact and the static contact 2, and the separation generates an electric arc, and the high temperature of the electric arc often causes contact fusion welding and damage easily. In the application, after the moving contact 3 is separated from the static contact 2, the moving contact 3 can act on the driving plate 12 to drive the arc isolating plate 8 to turn over so as to separate the moving contact and the static contact 2, so that an electric arc generated by breaking is instantly isolated. And the arc isolating plate 8 and the driving plate 12 are arranged in an L shape, so that the overturning and arc isolating effect can be realized more favorably. When the above-mentioned movement process also can be reversely implemented, the arc-isolating operation can be cancelled, and the moving contact and the static contact 2 can be connected.
In the present application, the above-mentioned solution of L-shaped plates includes two use scenarios:
1. two sides of the rotating shaft 9 are respectively and fixedly connected with an arc isolation plate 8 and a driving plate 12, and the arc isolation plate 8 and the driving plate 12 form an L-shaped arrangement;
2. the L-shaped integrated arrangement is formed by the arc isolating plate 8 and the driving plate 12, and the rotating shaft 9 is arranged at the joint of the arc isolating plate 8 and the driving plate 12 in a penetrating manner, namely the joint of the arc isolating plate 8 and the driving plate 12 is fixedly connected with the rotating shaft 9.
The scope of protection of the L-shaped plate of the present application shall cover the solutions described above. In addition, the use scenario of the v 21274h panel 7 should cover another possibility, namely the use of the housing 1 as a floor for the Contraband panel 7.
Further, the distance between the end of the driving plate 12 and the rotating shaft 9 (i.e., the length of the driving plate 12) is smaller than the distance between the end of the arc barrier 8 and the rotating shaft 9 (i.e., the length of the arc barrier 8). I.e., the length of the flash barrier 8 is greater than the length of the drive plate 12. Thereby ensuring the arc-isolating effect of the arc-isolating plate 8.
Furthermore, a movable space for the movable contact 3 is formed between the driving plate 12 and the arc isolating plate 8. Because the arc isolating plate 8 and the driving plate 12 form an L-shaped arrangement, an opening is formed, and the opening is a moving space for the movable contact 3. The moving contact 3 is selectively abutted with the driving plate and the arc isolating plate so as to respectively correspond to the brake closing action and the brake closing action.
Furthermore, the end of the arc-isolating plate 8 far away from the rotating shaft 9 is provided with a groove 13 matched with the static contact 2. When the movable shaft 6 drives the contact 3 and the static contact 2 to be switched on, the movable contact 3 acts on the arc-isolating plate 8 and drives the arc-isolating plate 8 to rotate towards the static contact 2. At this time, the end of the arc isolating plate 8 is provided with the groove 13, so that interference caused by closing of the movable and stationary contacts 2 can be avoided.
It can be understood that: when the static contact 2 is matched with the movable contact 3, one side of the static contact 2 is positioned in the groove 13 and has a gap with the groove wall of the groove 13. Therefore, when the static contact 2 is matched with the movable contact 3, the arc isolation plate 8 is not contacted with the static contact 2, the arc isolation success rate of the arc isolation plate 8 is further improved, and the damage of the arc isolation plate 8 is avoided.
Further, one side of the housing 1 is provided with a sliding groove 10, and the sliding groove 10 is slidably connected with the movable shaft 6. In addition, one side of the shell 1 is also provided with a mounting groove 11 for mounting the arc isolating mechanism 5.
The movable shaft 6 and the arc isolating mechanism 5 are installed on the shell 1 in a modularized mode, and installation efficiency is improved under the condition that installation is guaranteed to be qualified.
Furthermore, the static contact 2 of the present application includes a static contact 2 at a line inlet end and a static contact 2 at a load end which are located at two sides of a movable shaft 6, and two ends of a movable contact 3 penetrate through a through hole 4 at the position of the movable shaft 6 to respectively match with the static contact 2 at the line inlet end and the static contact 2 at the load end. Arc isolating mechanisms 5 are arranged between the two sides of the movable shaft 6 and the inlet end static contact 2 and the load end static contact 2.
Through the setting, this application can use in dual supply automatic transfer switch. However, the application scenario of the present application should not be limited to the dual power automatic transfer switch, and all the arc isolation methods and mechanisms applied to the present application should be within the scope of protection of the present application.
Furthermore, the number of the static contact 2, the number of the moving contact 3 and the number of the arc isolating mechanisms 5 can be multiple, and the static contact, the moving contact and the arc isolating mechanisms correspond to each other one by one to form an arc isolating implementation unit. That is, the arc-isolating implementing unit of the present application may be plural, specifically, at least one.
In the present application, the static contact 2, the movable contact 3, and the arc isolating mechanism 5 are essential for the implementation unit to have the arc isolating effect. And the arrangement is used for mainly protecting the use scene with at least one arc isolating implementation unit.
Further, the upper part of the movable shaft 6 is provided with a structure for driving the movable shaft to slide, and the structure can be an external operating rod. The opening and closing of the brake can be realized by manually operating the operating lever; other structures known in the art may also be used to effect actuation of the movable shaft. This is prior art and will not be described here.
Further, the arc isolating plate 8 is made of an insulating material so as to better isolate the electric arc.
The specific embodiments are only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiments without inventive contribution as required after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (6)
1. The utility model provides a cut off arc extinguishing device, includes casing (1) that has static contact (2) and moving contact (3), its characterized in that: a movable shaft (6) is slidably connected to one side of the shell (1), a through hole (4) for accommodating the movable contact (3) penetrates through one side of the movable shaft (6), and one end of the movable contact (3) penetrates through the through hole (4) to be matched with the static contact (2);
the shell (1) is further provided with an arc isolating mechanism (5) between the static contact (2) and the movable shaft (6), the static contact (2), the movable contact (3) and the arc isolating mechanism (5) are arranged in a delta shape, and when the movable shaft (6) drives the movable contact (3) to move towards the direction of the arc isolating mechanism (5) so as to disconnect the movable contact (3) and the static contact (2), the movable contact (3) synchronously triggers the arc isolating mechanism (5) to isolate arcs.
2. The arc-extinguishing device for cutting off arc according to claim 1, wherein: the arc isolating mechanism (5) comprises an Contraband-shaped plate (7) and an L-shaped plate, one side of the Contraband-shaped plate (7) is provided with an opening, and the L-shaped plate is placed in the opening and is rotatably connected with the Contraband-shaped plate (7); the L-shaped plate comprises an arc isolation plate (8) and a drive plate, the arc isolation plate (8) and the drive plate form an L-shaped structure, a rotating shaft (9) is arranged at the joint of the arc isolation plate (8) and the drive plate, and the two ends of the rotating shaft (9) are rotatably connected with the Contraband-shaped plate (7).
3. The arc-extinguishing device for cutting off arc according to claim 2, characterized in that: the distance between the end part of the driving plate and the rotating shaft (9) is smaller than the distance between the end part of the flash barrier (8) and the rotating shaft (9).
4. The arc-extinguishing device for cutting off arc according to claim 3, wherein: and a groove matched with the static contact (2) is formed in the end part, far away from the rotating shaft (9), of the arc isolating plate (8).
5. The arc-extinguishing device for cutting off arc according to claim 4, wherein: the flash barrier (8) is made of insulating materials.
6. The arc-extinguishing device for cutting off arc according to claim 2, characterized in that: the fixed contacts (2), the movable contacts (3) and the arc isolating mechanisms (5) are in one-to-one correspondence to form an arc isolating implementation unit, and the number of the arc isolating implementation units can be multiple, specifically at least one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220646130.2U CN217061826U (en) | 2022-03-22 | 2022-03-22 | Cut off electric arc extinguishing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220646130.2U CN217061826U (en) | 2022-03-22 | 2022-03-22 | Cut off electric arc extinguishing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217061826U true CN217061826U (en) | 2022-07-26 |
Family
ID=82490774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220646130.2U Active CN217061826U (en) | 2022-03-22 | 2022-03-22 | Cut off electric arc extinguishing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217061826U (en) |
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2022
- 2022-03-22 CN CN202220646130.2U patent/CN217061826U/en active Active
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