Instantaneous arc static contact

Abstract

The utility model discloses an instantaneous arc static contact, which belongs to the technical field of arc extinguishing switches and comprises an arc moving contact and an arc static contact which are used for arc division, the arc static contact is provided with an arc static contact point, a buffer pad is arranged in the arc static contact and is positioned below the arc static contact point, and the arc moving contact can be clamped in the arc static contact. The arc moving contact can be in contact with the arc static contact, the arc moving contact can be in contact with the buffer pad, and the arc moving contact and the arc static contact have the effect of reducing the possibility that the arc moving contact and the arc static contact are damaged when the arc moving contact and the arc static contact are switched on.

Description

Technical Field

[0001] The utility model relates to the technical field of arc extinguishing switches, in particular to an instantaneous arc static contact. Background Art

[0002] An arc extinguishing mechanism is usually provided in the load switch, which can quickly extinguish the arc when the contacts are disconnected to prevent circuit short circuit and equipment damage caused by the arc. In the arc extinguishing mechanism, the arc moving contact needs to complete the closing operation with the arc static contact within an extreme time. In the existing technology, when the arc moving contact and the arc static contact are closed, the high-speed movement of the arc moving contact will generate a large inertia. Due to this inertia, the arc moving contact will generate a strong collision force when it contacts the arc static contact. The long-term closing action will cause damage to both the arc moving contact and the arc static contact, thereby affecting the arc breaking ability of the arc moving contact and the arc static contact. In order to ensure the safety of the load switch, the arc moving contact and the arc static contact are arranged in the arc extinguishing chamber. It is relatively cumbersome to replace the arc moving contact or the arc static contact.

[0003] In view of the above-mentioned related technologies, it is urgent to design and develop a kind of instantaneous arc-static contact to reduce the possibility of damage to the arc-moving contact and the arc-static contact when they are closed. Utility Model Content

[0004] In order to reduce the possibility of damage to the arc moving contact and the arc static contact when they are closed, the present application provides an instantaneous arc static contact.

[0005] The instantaneous arc static contact provided in this application adopts the following technical solution:

[0006] A momentary arc-static contact comprises an arc-moving contact and an arc-static contact for arc splitting, wherein the arc-static contact is provided with an arc-static contact point, and a buffer pad is provided inside the arc-static contact, and the buffer pad is located below the arc-static contact point. The arc-moving contact can be snapped into the arc-static contact, the arc-moving contact can contact the arc-static contact point, and the arc-moving contact can touch the buffer pad.

[0007] By adopting the above technical solution, an arc-static contact is provided on the arc-static contact, and a buffer pad is provided in the arc-static contact, the buffer pad is located below the arc-static contact, the arc-moving contact can be clamped in the arc-static contact, and the arc-moving contact can contact the arc-static contact. In the process of closing the arc-moving contact and the arc-static contact, the arc-moving contact moves toward the arc-static contact at high speed, and the arc-moving contact touches the buffer pad. The buffer pad reduces the inertial collision force of the arc-moving contact, thereby reducing the possibility of damage to the arc-moving contact and the arc-static contact when the arc-moving contact and the arc-static contact are closed.

[0008] Preferably, an extension block is provided next to the buffer pad, the extension block extends out of the arc static contact, a pull plate is provided on the extension block, the pull plate is away from the arc static contact, and a notch for operation is formed between the pull plate and the buffer pad.

[0009] By adopting the above technical solution, an extension block is provided next to the buffer pad, the extension block extends out of the arc static contact, a pull plate is provided on the extension block, the pull plate is away from the arc static contact, and a slot for operation is formed between the pull plate and the buffer pad. When the buffer pad needs to be replaced, by pulling the pull plate upward, the pull plate drives the extension block to move upward, and the extension block drives the buffer pad to move upward, and the pull plate is continued to be pulled until the buffer pad is separated from the arc static contact, so that the old buffer pad is removed and the new buffer pad is replaced.

[0010] Preferably, the arc-static contact is arranged on a base plate, and a mounting mechanism is provided on the base plate. The mounting mechanism includes a mounting seat arranged on the base plate, a support plate arranged in the mounting seat and a spring sheet arranged on the support plate, and the arc-static contact is arranged in the spring sheet.

[0011] By adopting the above technical solution, the mounting seat is arranged on the base plate, the support plate is arranged in the mounting seat, the spring sheet is arranged on the support plate, and the arc-static contact is arranged in the spring sheet. In the process of the arc-moving contact touching the buffer pad and rebounding to the arc-static contact position, the spring sheet gives the arc-static contact a certain extrusion force, so that the arc-static contact clamps the two sides of the arc-moving contact to prevent the arc-moving contact from separating from the arc-static contact.

[0012] Preferably, the mounting mechanism includes a screw 1 threadedly arranged on the spring sheet, the support plate is located between the spring sheet and the arc-static contact, the screw 1 passes through the spring sheet, the support plate, and the arc-static contact, and the screw 1 connects the spring sheet, the support plate and the arc-static contact.

[0013] By adopting the above technical solution, screw 1 is threadedly arranged on the spring sheet, the support plate is located between the spring sheet and the arc-static contact, screw 1 passes through the spring sheet, the support plate, and the arc-static contact, and screw 1 connects the spring sheet, the support plate, and the arc-static contact, thereby improving the stability of the connection between the spring sheet, the support plate, and the arc-static contact.

[0014] Preferably, the support plate is provided with connecting screws, which pass through the support plate and the mounting seat and are threadedly sleeved in the base plate.

[0015] By adopting the above technical solution, connecting screws are provided on the support plate, and the connecting screws pass through the support plate and the mounting seat and are threadedly sleeved in the base plate, thereby improving the stability of the connection between the support plate, the mounting seat and the base plate.

[0016] Preferably, the mounting mechanism includes a top plate provided on the mounting seat, the top plate is located below the spring sheet, the top plate is located below the support plate, and the support plate is an elastic plate.

[0017] By adopting the above technical solution, the top plate is arranged on the mounting seat, the top plate is located below the spring sheet, and the top plate is located below the support plate. The support plate is an elastic plate. During the closing process of the arc moving contact and the arc static contact, the arc moving contact moves toward the arc static contact at high speed, and the arc moving contact gives a downward elastic force to the buffer pad. The arc moving contact drives the arc static contact, the spring sheet and the support plate to deflect downward. If the force of the downward deflection of the support plate is greater, the upward elastic force given by the support plate to the buffer pad is greater, and there may be a possibility that the rebound force of the support plate is too large, so that the arc moving contact may separate from the arc static contact. The top plate is located below the support plate, which limits the downward bending angle of the support plate, and can effectively avoid the possibility that the arc moving contact may separate from the arc static contact due to the large rebound force, which is beneficial to maintaining the working stability of the entire device.

[0018] Preferably, a placement mechanism is provided on the base plate, and the placement mechanism includes a placement seat provided on the base plate, a placement column provided on the placement seat, a placement rod rotatably provided on the placement column, and a rotating rod detachably provided on the placement rod, the rotating rod and the placement rod are detachably connected by screws, the arc moving contact is rotatably provided on the rotating rod by screws, and the arc moving contact is located obliquely above the arc static contact.

[0019] By adopting the above technical solution, the placement seat is arranged on the base plate, the placement column is arranged on the placement seat, the placement rod is rotatably arranged on the placement column, the rotating rod and the placement rod are detachably connected by screws, the arc moving contact is rotatably arranged on the rotating rod by screws, and the arc moving contact is located obliquely above the arc static contact, thereby improving the stability of the arc moving contact during movement.

[0020] Preferably, the arc static contact is made of copper alloy material.

[0021] By adopting the above technical solution, the arc static contact is made of copper alloy material and can withstand high temperatures.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. An arc-static contact is provided on the arc-static contact, and a buffer pad is provided inside the arc-static contact. The buffer pad is located below the arc-static contact. The arc-moving contact can be clamped in the arc-static contact and can contact the arc-static contact. During the closing process of the arc-moving contact and the arc-static contact, the arc-moving contact moves toward the arc-static contact at high speed, and the arc-moving contact touches the buffer pad. The buffer pad reduces the inertial collision force of the arc-moving contact and prevents the arc-moving contact from directly colliding with the arc-static contact, thereby reducing the possibility of damage to the arc-moving contact and the arc-static contact when the arc-moving contact and the arc-static contact are closed;

[0024] 2. An extension block is provided next to the buffer pad, which extends out of the arc-static contact. A pull plate is provided on the extension block, which is away from the arc-static contact. A notch for operation is formed between the pull plate and the buffer pad. After multiple closings, the buffer pad is easily damaged. When the buffer pad needs to be replaced, the pull plate is pulled upward, and the pull plate drives the extension block upward, and the extension block drives the buffer pad upward. The pull plate is continued to be pulled until the buffer pad is separated from the arc-static contact, making it easy to remove the old buffer pad and replace it with a new one.

[0025] 3. The mounting seat is arranged on the base plate, the support plate is arranged in the mounting seat, the spring sheet is arranged on the support plate, and the arc-static contact is arranged in the spring sheet. In the process of the arc-moving contact touching the buffer pad and rebounding to the arc-static contact position, the spring sheet gives the arc-static contact a certain extrusion force, so that the arc-static contact clamps the two sides of the arc-moving contact to prevent the arc-moving contact from being separated from the arc-static contact, and improves the stability of the connection between the arc-moving contact and the arc-static contact, thereby ensuring the smooth progress of the entire arc extinguishing work. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the instantaneous arc static contact in the embodiment of the present application.

[0027] Figure 2 It is a schematic structural diagram of the buffer pad in an embodiment of the present application.

[0028] Description of reference numerals:

[0029] 1. Base plate; 2. Placement mechanism; 21. Placement seat; 22. Placement column; 23. Placement rod; 24. Rotation rod; 3. Arc moving contact; 4. Mounting mechanism; 41. Mounting seat; 42. Support plate; 421. Connecting screw; 43. Spring sheet; 44. Top plate; 5. Arc static contact; 51. Arc static contact; 6. Buffer pad; 61. Extension block; 62. Pull plate. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-2 This application is described in further detail.

[0031] The present application discloses an instantaneous arc static contact, referring to Figure 1As shown, the instantaneous arcing static contact includes a base plate 1, a placement mechanism 2, an arcing moving contact 3, a mounting mechanism 4, an arcing static contact 5 and a buffer pad 6. The base plate 1 is horizontally arranged, and the length direction of the base plate 1 is parallel to the ground.

[0032] Reference Figure 1 As shown, the placing mechanism 2 includes a placing seat 21, a placing column 22, a placing rod 23 and a rotating rod 24. The placing seat 21 is fixed on the base plate 1 by screws, and the placing column 22 is arranged in the placing seat 21. The axial direction of the placing column 22 is parallel to the ground, and the axial direction of the placing column 22 is perpendicular to the length direction of the base plate 1.

[0033] Reference Figure 1 As shown, the placing rod 23 is rotatably set on the placing column 22, and the length direction of the placing rod 23 is perpendicular to the axial direction of the placing column 22. The rotating rod 24 is detachably fixed to the placing rod 23 by screws. The length direction of the rotating rod 24 is the same as the length direction of the placing rod 23. The arcing contact 3 is rotatably set on the rotating rod 24 by screws. The side of the arcing contact 3 close to the placing rod 23 is in contact with the placing rod 23, thereby improving the stability of the arcing contact 3 during movement.

[0034] Reference Figure 1 As shown, the mounting mechanism 4 includes a mounting seat 41, a support plate 42, a spring sheet 43, a screw and a top plate 44. The mounting seat 41 is fixedly arranged on the top surface of the base plate 1, and the support plate 42 is arranged in the mounting seat 41. The cross-section of the support plate 42 is U-shaped, and the support plate 42 is an elastic plate. A connecting screw 421 is provided on the support plate 42. The connecting screw 421 passes through the support plate 42 and the mounting seat 41 and is threadedly sleeved in the base plate 1 to improve the stability of the connection between the support plate 42, the mounting seat 41 and the base plate 1.

[0035] Reference Figure 1 As shown, the arcing static contact 5 is arranged in the spring sheet 43, and an arcing static contact point 51 is provided on the arcing static contact 5. The arcing static contact 5 is located obliquely below the arcing moving contact 3. The arcing static contact point 51 is made of copper alloy material and can withstand high temperatures.

[0036] Reference Figure 1 As shown, the spring sheet 43 is arranged on the support plate 42, the cross-section of the spring sheet 43 is U-shaped, the spring sheet 43 is arranged in the support plate 42, the support plate 42 is located between the spring sheet 43 and the arc static contact 5, and a screw is threadedly arranged on the spring sheet 43. The screw passes through the spring sheet 43, the support plate 42, and the arc static contact 5. The screw connects the spring sheet 43, the support plate 42 and the arc static contact 5, thereby improving the stability of the connection between the spring sheet 43, the support plate 42 and the arc static contact 5.

[0037] Reference Figure 1As shown, the top plate 44 is arranged on the mounting seat 41, and the top plate 44 is located below the spring sheet 43. The top plate 44 is located below the support plate 42. During the closing process of the arc moving contact 3 and the arc static contact 5, the arc moving contact 3 moves toward the arc static contact 5 at high speed, and the arc moving contact 3 gives a downward elastic force to the buffer pad 6. The arc moving contact 3 drives the arc static contact 5, the spring sheet 43 and the support plate 42 to deflect downward. If the force of the downward deflection of the support plate 42 is greater, the upward elastic force given by the support plate 42 to the buffer pad 6 is greater, and there may be a possibility that the rebound force of the support plate 42 is too large, so that the arc moving contact may separate from the arc static contact 51. The top plate 44 is located below the support plate 42, which limits the downward bending angle of the support plate 42, and can effectively avoid the possibility that the arc moving contact may be affected by a large rebound force and separate from the arc static contact 51, which is beneficial to maintaining the stability of the operation of the entire device.

[0038] Reference Figure 1 As shown, the buffer pad 6 is arranged in the arc-static contact 5, and the buffer pad 6 is located below the arc-static contact 51. The arc-moving contact 3 can be clamped in the arc-static contact 5, the arc-moving contact 3 can contact the arc-static contact 51, and the arc-moving contact 3 can touch the buffer pad 6.

[0039] Reference Figure 1 As shown, during the closing process of the arcing moving contact 3 and the arcing static contact 5, the arcing moving contact 3 moves toward the arcing static contact 5 at high speed, and the arcing moving contact 3 touches the buffer pad 6. The buffer pad 6 reduces the inertial collision force of the arcing moving contact 3. The buffer pad 6 prevents the arcing moving contact 3 from directly colliding with the arcing static contact 5, thereby reducing the possibility of damage to the arcing moving contact 3 and the arcing static contact 5 when the arcing moving contact 3 and the arcing static contact 5 are closed.

[0040] Reference Figure 1 and Figure 2 As shown, an extension block 61 is provided next to the buffer pad 6, and the extension block 61 extends out of the arc static contact 5. A pull plate 62 is provided on the extension block 61, and the pull plate 62 is away from the arc static contact 5. A slot for operation is formed between the pull plate 62 and the buffer pad 6.

[0041] Reference Figure 1 and Figure 2 As shown, after multiple closings, the buffer pad 6 is also easily damaged. When the buffer pad 6 needs to be replaced, the pull plate 62 is pulled upward, and the pull plate 62 drives the extension block 61 to move upward, and the extension block 61 drives the buffer pad 6 to move upward. The pull plate 62 is continued to be pulled until the buffer pad 6 is separated from the arc static contact 5, which is convenient for removing the old buffer pad 6 and thus facilitating the replacement of the new buffer pad 6.

[0042] The implementation principle of the instantaneous arc static contact 5 in the embodiment of the present application is:

[0043] During the closing process of the arcing moving contact 3 and the arcing static contact 5, the arcing moving contact 3 moves toward the arcing static contact 5 at high speed, and the arcing moving contact 3 touches the buffer pad 6. The buffer pad 6 reduces the inertial collision force of the arcing moving contact 3. The buffer pad 6 prevents the arcing moving contact 3 from directly colliding with the arcing static contact 5, thereby reducing the possibility of damage to the arcing moving contact 3 and the arcing static contact 5 when the arcing moving contact 3 and the arcing static contact 5 are closed.

[0044] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An instantaneous arcing static contact, comprising an arcing moving contact (3) and an arcing static contact (5) for arc splitting, characterized in that: The arc-static contact (5) is provided with an arc-static contact point (51), a buffer pad (6) is provided in the arc-static contact (5), and the buffer pad (6) is located below the arc-static contact point (51). The arc-moving contact (3) can be snapped into the arc-static contact (5), the arc-moving contact (3) can be in contact with the arc-static contact point (51), and the arc-moving contact (3) can be in contact with the buffer pad (6).

2. The instantaneous arc static contact according to claim 1, characterized in that: An extension block (61) is provided next to the buffer pad (6), the extension block (61) extends out of the arc static contact (5), a pull plate (62) is provided on the extension block (61), the pull plate (62) is away from the arc static contact (5), and a notch for operation is formed between the pull plate (62) and the buffer pad (6).

3. The instantaneous arc static contact according to claim 1, characterized in that: The arc static contact (5) is arranged on a base plate (1); a mounting mechanism (4) is arranged on the base plate (1); the mounting mechanism (4) comprises a mounting seat (41) arranged on the base plate (1), a support plate (42) arranged in the mounting seat (41), and a spring sheet (43) arranged on the support plate (42); the arc static contact (5) is arranged in the spring sheet (43).

4. The instantaneous arc static contact according to claim 3, characterized in that: The mounting mechanism (4) includes a screw threadedly arranged on the spring sheet (43); the support plate (42) is located between the spring sheet (43) and the arc-static contact (5); the screw passes through the spring sheet (43), the support plate (42), and the arc-static contact (5); and the screw connects the spring sheet (43), the support plate (42), and the arc-static contact (5).

5. The instantaneous arc static contact according to claim 4, characterized in that: The support plate (42) is provided with a connecting screw (421), and the connecting screw (421) passes through the support plate (42) and the mounting seat (41) and is then threadedly sleeved in the bottom plate (1).

6. The instantaneous arc static contact according to claim 3, characterized in that: The mounting mechanism (4) comprises a top plate (44) arranged on the mounting seat (41), the top plate (44) being located below the spring sheet (43), the top plate (44) being located below the support plate (42), and the support plate (42) being an elastic plate.

7. The instantaneous arc static contact according to claim 3, characterized in that: A placement mechanism (2) is provided on the base plate (1), the placement mechanism (2) comprising a placement seat (21) provided on the base plate (1), a placement column (22) provided on the placement seat (21), a placement rod (23) rotatably provided on the placement column (22), and a rotating rod (24) detachably provided on the placement rod (23), the rotating rod (24) and the placement rod (23) being detachably connected via screws, the arc moving contact (3) being rotatably provided on the rotating rod (24) via screws, and the arc moving contact (3) being located obliquely above the arc static contact (5).

8. The instantaneous arc static contact according to claim 1, characterized in that: The arc static contact (51) is made of copper alloy material.

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