Novel arc isolation structure
By designing a new arc-sealing structure, the combination of arc-sealing parts and elastic feet is used to solve the problem of excessive arc when the static and dynamic contacts of electrical products are separated, and the effect of effectively cutting off the arc and protecting dynamic and static contacts is achieved.
Patent Information
- Application Number
- CN202421796988.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-29
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-07-29
AI Technical Summary
When the static and dynamic contacts are separated, existing electrical products are prone to arcs, and the arc stays for too long or too large, resulting in the static and dynamic contacts being easily burned.
A new arc-sealing structure is designed, including moving contacts, arc-sealing components and fixtures. The arc-separating assembly consists of two symmetrically arranged arc-separating parts and fixing parts. The fixing part is connected to the movable contact. The fixing part is equipped with two elastic legs. The static contact is abutting the conflicting area, which drives the arc-separating part to move in the opposite direction to form an arc-separating effect.
Through the new arc-separating structure, the arc can be effectively cut off and the dynamic and static contacts can be prevented from being burned. The fixing parts are simple in structure and easy to fix, which is suitable for the movement of the two arc-separating parts.
Smart Images
Figure CN222952952U_ABST
Abstract
Description
Technical Field
[0001] The utility model specifically relates to a novel arc isolation structure. Background Art
[0002] Conventional electrical products, such as dual power conversion switches, isolating switches, knife switches, etc., have clamping grooves on the moving contacts. The moving contacts move so that the clamping grooves match the corresponding static contacts, thereby achieving electrical connection between the moving contacts and the static contacts. However, when the electrical product needs to be switched, the static contacts separate from the moving contacts, which will generate an arc. The arc stays for too long or is too large to be extinguished in time, causing the moving and static contacts to be easily burned. Utility Model Content
[0003] The main technical problem solved by the utility model is to provide a novel arc isolation structure.
[0004] The technical solution adopted by the utility model to solve the technical problem is: a new arc isolation structure, which includes:
[0005] A moving contact, wherein the moving contact is provided with a contact portion, and the contact portion is provided with a clamping groove;
[0006] Arc isolation assembly, the arc isolation assembly is connected to the moving contact, the arc isolation assembly includes two symmetrically arranged arc isolation parts and a fixing part, the fixing part is connected to the moving contact, the fixing part is provided with two elastic supporting feet, the two elastic supporting feet respectively cooperate with the outer sides of the arc isolation parts, the inner sides of the two arc isolation parts abut against each other to form a resistance area, the static contact abuts against the resistance area to drive the arc isolation part to move in the opposite direction, and the static contact extends into the clamping groove and cooperates with the clamping groove.
[0007] With this structural setting, when the moving contact rotates, the static contact moves relative to it, so that the static contact contacts the contact area. Under the action of the rotational force, the two arc-isolating parts separate, so that the static contact can pass through the contact area, and then the static contact cooperates with the clamping groove to form an electrical connection effect; conversely, when the static contact separates from the clamping groove, the force applied to the arc-isolating part disappears, and the two elastic legs will shrink to form a symmetrical clamping effect on both sides, so that the two arc-isolating parts move relative to each other and re-form the contact area. At this time, the generated arc can be cut off by the arc-isolating part to form an arc-isolating effect. Compared with other energy storage methods, this structure has a simple structure of the fixing part, is easy to fix, and has good symmetry, which is more conducive to the movement of the two arc-isolating parts.
[0008] The moving contact is provided with a fixing groove, the fixing piece is provided with a fixing portion, and the fixing portion cooperates with the fixing groove.
[0009] By setting the fixing groove, the fixing effect of part of the fixing piece can be better achieved, and a certain supporting force can be given to the elastic support foot. In addition, other clamping blocks can be used in conjunction with the fixing part to form a clamping and fixing effect, and the moving contact and part of the fixing piece can also be integrally injection molded.
[0010] The fixing groove is in an inverted U shape, the two ends of the fixing part are respectively connected to the two elastic legs, the fixing part is accommodated in the fixing groove, and the two elastic legs are partially accommodated in the fixing groove.
[0011] The fixing groove is arranged in this way to better achieve the effect of fixing and supporting, and prevent the connection between the fixing part and the elastic support leg from breaking.
[0012] The fixing groove is provided with a necking portion, and the necking portion limits the fixing piece from being separated from the fixing groove.
[0013] The necking portion forms a certain restriction effect to prevent the fixing piece from falling off and separating. The necking portion has a certain elasticity, so that the fixing piece can pass over the necking portion and enter the fixing groove.
[0014] The elastic support leg is L-shaped, a fixing hole is arranged on the outer side of the arc isolation piece, and one end of the elastic support leg extends into the fixing hole.
[0015] The setting of the fixing holes can better achieve the fixing effect of the fixing parts.
[0016] Wherein, one of the moving contact and the arc-isolating member is provided with a guide groove, and the other of the moving contact and the arc-isolating member is provided with a guide protrusion matched with the guide groove.
[0017] The guide groove cooperates with the guide protrusion to form a guiding effect, which facilitates the sliding of the arc isolation piece.
[0018] Wherein, the guide protrusion is an inverted trapezoidal structure.
[0019] The inverted trapezoidal setting forms a structure that is larger at the top and smaller at the bottom, preventing the arc isolation piece from moving forwards and backwards.
[0020] The abutment area is formed by the abutment of inclined surfaces or the abutment of curved surfaces.
[0021] The inclined surface or the arc surface can better achieve the resistance effect of the static contact, so that the arc isolation member moves.
[0022] A fitting area is formed inside the two arc-isolating members, and the fitting area is a surface-to-surface fit.
[0023] The setting of the fitting area increases the contact area when they abut against each other, thereby preventing the elastic force of the two elastic legs from being too large, which would cause the two arc-isolating members to be misaligned. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1It is a schematic diagram of the structure of Embodiment 1 of the present utility model;
[0025] Figure 2 It is a cross-sectional view of Example 1 of the utility model;
[0026] Figure 3 It is a cross-sectional view of Example 1 of the utility model;
[0027] Figure 4 It is a structural schematic diagram of the moving contact of Example 1 of the utility model;
[0028] Figure 5 It is a schematic structural diagram of the arc separation member in Embodiment 1 of the present utility model;
[0029] Figure 6 It is a schematic structural diagram of the fixing member in Example 1 of the utility model. DETAILED DESCRIPTION
[0030] Embodiment 1:
[0031] A new arc isolation structure, as shown in the attached Figure 1-6 As shown, including:
[0032] Moving contact 11, the moving contact 11 is provided with a contact part 111, the contact part 111 is provided with a clamping groove 112, the clamping groove 112 is used to cooperate with the static contact, when the moving contact 11 rotates as a whole, the static contact rotates relative to the moving contact 11, so that the static contact cooperates with the clamping groove 112 to form a clamping effect, and also realizes the electrical connection effect between the moving contact 11 and the static contact. Here, a moving contact 11 can be provided with a contact part 111, and the other end forms an electrical connection effect through a soft copper wire or other flexible conductive material; two contact parts 111 can also be provided on a moving contact 11, and the two contact parts 111 correspond to different static contacts respectively, and the moving contact 11 forms different line connection effects during the rotation process. In this embodiment, two contact parts 111 are provided on a moving contact 11 as an example for description, and the structures of the two contact parts 111 are the same.
[0033] Arc-isolating assembly, the arc-isolating assembly is connected to the moving contact 11. Here, the number of arc-isolating assemblies is also two, and one contact part 111 corresponds to one arc-isolating assembly. Since the structures of the arc-isolating assemblies are consistent, only the structure of one of the arc-isolating assemblies is described. The arc-isolating assembly includes two symmetrically arranged arc-isolating members 12 and a fixing member 13. The fixing member 13 is connected to the moving contact 11. The fixing member 13 is provided with two elastic legs 131. The two elastic legs 131 are symmetrically arranged, and the two elastic legs 131 are movable. The two elastic legs 131 can move relative to the rest of the fixing member 13, that is, an elastic effect is formed. The two elastic legs 131 are respectively matched with the outer side of the arc-isolating member 12. Specifically, one arc-isolating member 12 is located on the left side, and the other arc-isolating member 12 is located on the right side. Then, one elastic leg 131 is matched with the left side surface of the arc-isolating member 12 located on the left side, and the other elastic leg 131 is matched with the right side surface of the arc-isolating member 12 located on the right side, forming a clamping and fixing effect. The inner sides of the two arc-isolating members 12 abut against each other to form a contact area 16. The static contact abuts against the contact area 16 to drive the arc-isolating member 12 to move in the opposite direction. When the static contact abuts against the arc-isolating member 12, the static contact drives the left arc-isolating member 12 to move toward the left, and drives the right arc-isolating member 12 to move toward the right. The static contact extends into the clamping groove 112 and cooperates with the clamping groove 112. With this structural setting, when the moving contact 11 rotates, the static contact moves relative to it, so that the static contact abuts against the abutment area 16. Under the action of the rotational force, the two arc-isolating members 12 separate, so that the static contact can pass through the abutment area 16, and then the static contact cooperates with the clamping groove 112 to form an electrical connection effect; conversely, when the static contact separates from the clamping groove 112, the force applied to the arc-isolating member 12 disappears, and at this time the two elastic legs 131 will shrink to form a symmetrical clamping effect on both sides, so that the two arc-isolating members 12 move relative to each other and re-form the abutment area 16. At this time, the generated arc can be cut off by the arc-isolating member 12 to form an arc-isolating effect. Compared with other energy storage methods, in this structure, the fixing member 13 has a simple structure, is easy to fix, and has good symmetry, which is more conducive to the movement of the two arc-isolating members 12.
[0034] Specifically, as attached Figure 1-4 As shown, the moving contact 11 is provided with a fixing groove 113, and the fixing member 13 is provided with a fixing portion 132, and the fixing portion 132 cooperates with the fixing groove 113. Through the setting of the fixing groove 113, a part of the fixing effect of the fixing member 13 is better achieved, and a certain supporting force can be given to the elastic support leg 131. In addition, other clamping blocks can also cooperate with the fixing portion 132 to form a clamping and fixing effect, and the moving contact 11 and the fixing member 13 can also be integrally injection molded.
[0035] Specifically, as attached Figure 1-4As shown, the fixing groove 113 is an inverted U-shape, and the two ends of the fixing portion 132 are respectively connected to the two elastic legs 131, the fixing portion 132 is accommodated in the fixing groove 113, and the two elastic legs 131 are partially accommodated in the fixing groove 113. The fixing groove 113 adopts this arrangement to better achieve the effect of fixed support and prevent the connection between the fixing portion 132 and the elastic legs 131 from breaking. Here, it is equivalent to that the connection between the fixing portion 132 and the elastic legs 131 is located in the fixing groove 113, and even if the elastic legs 131 are elastically deformed, they will not break at the connection.
[0036] Specifically, as attached Figure 1-4 As shown, the fixing groove 113 is provided with a constricted portion 1131, and the constricted portion 1131 limits the separation of the fixing member 13 from the fixing groove 113. The constricted portion 1131 forms a certain limiting effect to prevent the fixing member 13 from falling off and separating. Here, the constricted portion 1131 has a certain elasticity, so that the fixing member 13 can pass over the constricted portion 1131 and enter the fixing groove 113.
[0037] Specifically, as attached Figure 1-6 As shown, the elastic support leg 131 is L-shaped, and a fixing hole 121 is provided on the outer side of the arc isolation member 12, and one end of the elastic support leg 131 extends into the fixing hole 121. The setting of the fixing hole 121 better realizes the fixing effect of the fixing member 13. Here, the elastic support leg 131 is relatively bent, that is, the elastic support leg 131 on the left side is vertically bent toward the right side, and the elastic support leg 131 on the right side is vertically bent toward the left side. In this embodiment, the fixing member 13 is an integrally formed setting, specifically a metal material, which is integrally formed by bending. Here, the fixing member 13 can be a steel wire or an iron wire, etc.
[0038] Specifically, as attached Figure 1-6 As shown, one of the moving contact 11 and the arc-isolating member 12 is provided with a guide groove 14, and the other of the moving contact 11 and the arc-isolating member 12 is provided with a guide protrusion 15 that cooperates with the guide groove 14. The guide groove 14 cooperates with the guide protrusion 15 to form a guiding effect, which is convenient for the sliding of the arc-isolating member 12. Here, since the arc-isolating member 12 slides left and right, the cooperation direction of the guide groove 14 and the guide protrusion 15 is also set horizontally left and right. In this embodiment, the moving contact 11 is provided with a guide protrusion 15, and the arc-isolating member 12 is provided with a guide groove 14. It should also be noted that the guide protrusion 15 and the guide groove 14 can be matched in one group or in multiple groups. For example, two guide protrusions 15 respectively cooperate with corresponding guide grooves 14. Those skilled in the art can also make adjustments according to actual needs.
[0039] Specifically, the guide protrusion 15 is an inverted trapezoidal structure. The inverted trapezoidal configuration forms a structure that is larger at the top and smaller at the bottom, preventing the arc-isolating member 12 from moving forward and backward, so that the arc-isolating member 12 can only move horizontally left and right. Due to the clamping of the elastic legs 131, the sliding distance of the arc-isolating member 12 in the horizontal left and right directions is also limited.
[0040] Specifically, the contact area 16 is a combination of inclined surfaces or arc surfaces. The inclined surface or arc surface can better achieve the contact effect of the static contact, so that the arc-isolating member 12 moves. In the present embodiment, the arc surfaces are specifically against each other, that is, an arc surface is provided on the inner side of the arc-isolating member 12, and the two arc surfaces are fitted against each other to form a contact area 16, which is convenient for cooperation with the static contact to achieve a breaking effect. The curvature of the arc surface here can be adjusted according to actual needs. It should be noted that the arc surface does not occupy the entire inner side of the arc-isolating member 12. It is only necessary to ensure that when the static contact and the arc-isolating member 12 are just in contact, the two can drive the arc-isolating member 12 to move through the bevel cooperation.
[0041] Specifically, a fitting area 17 is formed inside the two arc-isolating members 12, and the fitting area 17 is a surface-to-surface fit. The provision of the fitting area 17 increases the contact area when the two arc-isolating members 12 are abutted against each other, and prevents the elastic force of the two elastic legs 131 from being too large, causing the two arc-isolating members 12 to be misaligned. The fitting area 17 is located on the side close to the fixing portion 132, and the abutment area 16 is located on the side away from the fixing portion 132, that is, a plane and an arc surface are provided on the inside of the arc-isolating member 12, and the planes are connected to the arc surfaces, and the planes of the two arc-isolating members 12 abut against each other to form the fitting area 17, and the arc surfaces of the two arc-isolating members 12 abut against each other to form the abutment area 16.
Claims
1. A new arc isolation structure, characterized in that: include: A moving contact, wherein the moving contact is provided with a contact portion, and the contact portion is provided with a clamping groove; Arc isolation assembly, the arc isolation assembly is connected to the moving contact, the arc isolation assembly includes two symmetrically arranged arc isolation parts and a fixing part, the fixing part is connected to the moving contact, the fixing part is provided with two elastic supporting feet, the two elastic supporting feet respectively cooperate with the outer sides of the arc isolation parts, the inner sides of the two arc isolation parts abut against each other to form a resistance area, the static contact abuts against the resistance area to drive the arc isolation part to move in the opposite direction, and the static contact extends into the clamping groove and cooperates with the clamping groove.
2. A novel arc isolation structure as claimed in claim 1, characterized in that: The moving contact is provided with a fixing groove, and the fixing piece is provided with a fixing portion, and the fixing portion matches the fixing groove.
3. A novel arc isolation structure as claimed in claim 2, characterized in that: The fixing groove is in an inverted U shape, the two ends of the fixing part are respectively connected with the two elastic legs, the fixing part is accommodated in the fixing groove, and the two elastic legs are partially accommodated in the fixing groove.
4. A novel arc isolation structure according to claim 2 or 3, characterized in that: The fixing groove is provided with a shrinking portion, and the shrinking portion limits the fixing piece from being separated from the fixing groove.
5. A novel arc isolation structure as claimed in claim 1, characterized in that: The elastic support leg is L-shaped, a fixing hole is arranged on the outer side of the arc isolation piece, and one end of the elastic support leg extends into the fixing hole.
6. A novel arc isolation structure as claimed in claim 1, characterized in that: One of the moving contact and the arc-isolating member is provided with a guide groove, and the other of the moving contact and the arc-isolating member is provided with a guide protrusion matched with the guide groove.
7. A novel arc isolation structure as claimed in claim 6, characterized in that: The guide protrusion is an inverted trapezoidal structure.
8. A novel arc isolation structure as claimed in claim 1, characterized in that: The contact area is a contact between inclined surfaces or curved surfaces.
9. A novel arc isolation structure as claimed in claim 1, characterized in that: A fitting area is also formed on the inner sides of the two arc-isolating members, and the fitting area is a surface-to-surface fit.