Circuit breaker connecting structure and circuit breaker
By adopting the design of positioning rods and overflow grooves in the circuit breaker, the problems of thermal rivet connection position offset, overflow and fall off in the circuit breaker are solved, and better thermal rivet stability and circuit breaker working reliability are achieved.
Patent Information
- Application Number
- CN202422099829.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-28
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-08-28
AI Technical Summary
In existing circuit breakers, the thermal rivet connection between the contact support and the moving contact has problems with position offset, glue spill and peeling, resulting in poor thermal rivet effect.
A circuit breaker connection structure is adopted, in which the positioning rod is inserted into the positioning through hole on the moving contact, and a rubber overflow groove is set on the hole wall of the positioning through hole, so that the overflow glue after the positioning rod is melted by heat and flows into the overflow groove, ensuring the accurate position of the hot rivet, avoiding the overflow glue, and enhancing the stability of the hot rivet.
Through the design of the positioning rod and the overflow groove, the position offset and overflow problems of the hot rivet are avoided, and the stability and reliability of the thermal rivet between the moving contact and the contact support is improved, ensuring the working reliability of the circuit breaker.
Smart Images
Figure CN223006721U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of low-voltage electrical appliances, in particular to a circuit breaker connection structure and a circuit breaker. Background Art
[0002] A circuit breaker mainly includes a housing, an operating system, a contact system and an arc extinguishing system respectively arranged in the housing. The operating system and the contact system are relatively important parts in the circuit breaker. Among them, the connection between the contact support in the operating system and the moving contact in the contact system usually adopts a hot riveting connection method. However, in the current hot riveting connection, there are usually problems such as the offset of the hot riveting position between the contact support and the moving contact, hot riveting overflow glue and hot riveting shedding, resulting in a poor hot riveting effect between the contact support and the moving contact.
[0003] Therefore, there is an urgent need for a circuit breaker connection structure and a circuit breaker to solve the above problems. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a circuit breaker connection structure and a circuit breaker, which can ensure a better hot riveting effect between the contact support and the moving contact.
[0005] To achieve this purpose, the utility model adopts the following technical solutions:
[0006] A circuit breaker connection structure, comprising:
[0007] A contact support, including a positioning rod;
[0008] A moving contact, on which a positioning through hole is provided. An overflow glue groove is provided on the hole wall of the positioning through hole. The positioning rod is inserted into the positioning through hole. The positioning rod can be heated and melted, and the overflow glue after the positioning rod is melted flows into the overflow glue groove.
[0009] As an optional solution, a plurality of the overflow glue grooves are provided, and the plurality of overflow glue grooves are arranged in a ring along the hole wall of the positioning through hole.
[0010] As an optional solution, the moving contact includes a bottom surface, and the contact support further includes an installation surface that can be heated and melted. The bottom surface is attached and abutted against the installation surface. The positioning rod is arranged on the installation surface, and a glue discharge groove is provided on the installation surface.
[0011] As an optional solution, a plurality of the glue discharge grooves are provided, and the plurality of glue discharge grooves are arranged at intervals along the length direction of the installation surface.
[0012] As an optional solution, a positioning block is further provided on the installation surface. The positioning block is arranged at an interval from the positioning rod. A limiting through hole is further provided on the moving contact. The positioning block is used for being inserted into the limiting through hole.
[0013] As an alternative, the contact support further includes a first side surface and a limiting convex plate. The first side surface is disposed at an angle on one side of the mounting surface. The limiting convex plate protrudes from the first side surface. When the bottom surface abuts against the mounting surface, the moving contact abuts tightly against the limiting convex plate.
[0014] As an alternative, at least two limiting convex plates are provided.
[0015] As an alternative, the limiting convex plate can be heated and melted, and the overflow glue after the melting of the limiting convex plate flows into the glue discharge groove.
[0016] As an alternative, the moving contact further includes a second side surface, a third side surface, and a fourth side surface that are adjacent and successively disposed at an angle. The fourth side surface is used to abut tightly against the limiting convex plate. The contact support further includes a fifth side surface and a sixth side surface that are adjacent and disposed at an angle. The fifth side surface is disposed opposite to the first side surface. When the bottom surface abuts against the mounting surface, the second side surface fits with the fifth side surface, and the third side surface fits with the sixth side surface.
[0017] A circuit breaker includes a housing, an operating system, an arc extinguishing system, and a contact system respectively disposed in the housing, and further includes the circuit breaker connection structure as described above. The contact support is disposed in the operating system, and the moving contact is disposed in the contact system.
[0018] Beneficial effects:
[0019] For the circuit breaker connection structure proposed by the present utility model, by inserting the positioning rod into the positioning through hole on the moving contact, the limiting of the moving contact on the contact support is realized, thereby avoiding the subsequent position movement and deviation during the hot riveting of the moving contact and the contact support, and ensuring the accuracy of the hot riveting position. At the same time, an overflow glue groove is provided on the inner wall of the positioning through hole, so that the overflow glue after the positioning rod is heated and melted flows into the overflow glue groove, thereby avoiding the overflow of glue during the hot riveting of the moving contact and the contact support. And, due to the bonding effect between the overflow glue in the overflow glue groove and the moving contact, the hot riveting stability between the moving contact and the contact support is better. Moreover, a part of the positioning rod after being heated and melted will solidify between the top end of the positioning rod and the top end of the positioning through hole, so as to form a bonding boss similar to an umbrella shape between the top end of the positioning rod and the top end of the positioning through hole, making the connection between the contact support and the moving contact more reliable, avoiding the problem of hot riveting falling off, ensuring better hot riveting stability between the moving contact and the contact support, and thus ensuring better hot riveting effect between the contact support and the moving contact.
[0020] The circuit breaker proposed by the present utility model, due to including the above-mentioned circuit breaker connection structure, and the contact support is arranged in the operating system, and the moving contact is arranged in the contact system, makes the thermal riveting effect between the contact support and the moving contact better, so as to ensure that the working reliability of the whole circuit breaker is relatively high. Description of the Drawings
[0021] Figure 1 is a schematic diagram of the internal structure of the circuit breaker provided in the present utility model;
[0022] Figure 2 is a schematic diagram of the structure of the circuit breaker connection structure (after thermal riveting) provided in the present utility model;
[0023] Figure 3 is a schematic diagram of the structure of the moving contact provided in the present utility model from one perspective;
[0024] Figure 4 is a schematic diagram of the structure of the moving contact provided in the present utility model from another perspective;
[0025] Figure 5 is a schematic diagram of the structure of the contact support provided in the present utility model from one perspective;
[0026] Figure 6 is a schematic diagram of the structure of the contact support provided in the present utility model from another perspective;
[0027] Figure 7 is Figure 6 a partial enlarged structure schematic diagram at position A in
[0028] In the figure:
[0029] 1. Contact support; 11. Positioning rod; 12. Positioning block; 13. Mounting surface; 131. Glue discharge groove; 14. First side; 15. Limiting convex plate; 16. Fifth side; 17. Sixth side; 18. Bonding boss;
[0030] 2. Moving contact; 21. Positioning through hole; 211. Glue overflow groove; 22. Limiting through hole; 23. Bottom surface; 24. Second side; 25. Third side; 26. Fourth side;
[0031] 3. Housing; 4. Operating system; 5. Arc extinguishing system; 6. Contact system. Detailed Description of the Embodiment
[0032] The present utility model will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. In addition, it should be noted that for the convenience of description, only parts related to the present utility model rather than all structures are shown in the drawings.
[0033] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0034] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "above and over", and "on the top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "below and under", and "under the bottom of" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.
[0035] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "left", and "right" are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meanings.
[0036] In this embodiment, a circuit breaker connection structure and a circuit breaker including the circuit breaker connection structure are proposed. As Figure 1 and Figure 2 shown, the circuit breaker connection structure includes a contact support 1 and a moving contact 2. The circuit breaker further includes a housing 3, an operating system 4, an arc extinguishing system 5, and a contact system 6 respectively disposed inside the housing 3. The contact support 1 is disposed in the operating system 4, and the moving contact 2 is disposed in the contact system 6. Here, the working principle of the circuit breaker can refer to the working principle of the circuit breaker in the prior art, and the working principle of the circuit breaker will not be described in detail.
[0037] It should be noted that the key improvement in this embodiment mainly lies in the thermal riveting connection between the contact support 1 and the moving contact 2. Here, the specific structures and working principles of other structures in the housing 3, the arc extinguishing system 5, the operating system 4, and other structures in the contact system 6 will not be specifically described, and reference can be made to the structure of the existing circuit breaker.
[0038] Specifically, as Figures 2 to 7 shown, the contact support 1 includes a positioning rod 11. A positioning through hole 21 is provided on the moving contact 2, and an overflow glue groove 211 is provided on the hole wall of the positioning through hole 21. The positioning rod 11 is inserted into the positioning through hole 21, and the positioning rod 11 can be melted by heat. The overflow glue after the melting of the positioning rod 11 flows into the overflow glue groove 211.
[0039] In the circuit breaker connection structure of this embodiment, compared with the prior art, a positioning rod 11 is added. At the same time, an overflow glue groove 211 is added to the hole wall of the positioning through hole 21 on the moving contact 2. By inserting the positioning rod 11 into the positioning through hole 21 on the moving contact 2, the limit of the moving contact 2 on the contact support 1 is realized, so as to avoid the subsequent position movement and deviation during the hot riveting of the moving contact 2 and the contact support 1, and ensure the accuracy of the hot riveting position. At the same time, an overflow glue groove 211 is provided on the hole wall of the positioning through hole 21, so that the overflow glue after the positioning rod 11 is melted by heat flows into the overflow glue groove 211, so as to avoid overflow glue during the hot riveting of the moving contact 2 and the contact support 1. And, due to the bonding effect between the overflow glue in the overflow glue groove 211 and the moving contact 2, the hot riveting stability between the moving contact 2 and the contact support 1 is better. Moreover, a part of the positioning rod 11 after being melted by heat will solidify between the top end of the positioning rod 11 and the top end of the positioning through hole 21, so as to form a bonding boss 18 similar to an umbrella shape between the top end of the positioning rod 11 and the top end of the positioning through hole 21, making the connection between the contact support 1 and the moving contact 2 more reliable, avoiding the problem of hot riveting falling off, ensuring better hot riveting stability between the moving contact 2 and the contact support 1, and thus ensuring better hot riveting effect between the contact support 1 and the moving contact 2.
[0040] Furthermore, as Figure 3 and Figure 4 shown, a plurality of overflow glue grooves 211 are provided, and the plurality of overflow glue grooves 211 are arranged in a ring along the hole wall of the positioning through hole 21. On the one hand, it can accommodate more overflow glue and better avoid the problem of hot riveting overflow glue. On the other hand, it can further ensure better hot riveting stability between the moving contact 2 and the contact support 1 through the bonding between the overflow glue in the plurality of overflow glue grooves 211 and the moving contact 2. Here, the number of the overflow glue grooves 211 is not specifically limited.
[0041] Specifically, as Figure 3 and Figure 5 shown, the moving contact 2 includes a bottom surface 23, and the contact support 1 further includes an installation surface 13 that can be melted by heat. When the moving contact 2 is installed on the contact support 1, the bottom surface 23 of the moving contact 2 is attached and abutted against the installation surface 13 of the contact support 1. The positioning rod 11 is fixedly protruded on the installation surface 13, and a glue discharge groove 131 is provided on the installation surface 13.
[0042] Specifically, when the mounting surface 13 is heated and melted, the overflow glue flowing out of the mounting surface 13 flows into the glue discharge groove 131. On the one hand, the overflow glue can be accommodated in the glue discharge groove 131 to avoid the occurrence of overflow glue when hot riveting the moving contact 2 and the contact support 1. On the other hand, due to the bonding effect between the overflow glue in the glue discharge groove 131 and the bottom surface 23 of the moving contact 2, the hot riveting stability between the moving contact 2 and the contact support 1 is better.
[0043] Furthermore, as Figures 5 to 7 shown, there are multiple glue discharge grooves 131, and the multiple glue discharge grooves 131 are arranged at intervals along the length direction of the mounting surface 13. On the one hand, more overflow glue can be accommodated in each glue discharge groove 131 to better avoid the occurrence of overflow glue when hot riveting the moving contact 2 and the contact support 1. On the other hand, due to the bonding effect between the overflow glue in each glue discharge groove 131 and the bottom surface 23 of the moving contact 2, the hot riveting stability between the moving contact 2 and the contact support 1 is further ensured.
[0044] Specifically, as Figure 5 and Figure 6 shown, a positioning block 12 is further provided on the mounting surface 13, the positioning block 12 is arranged at intervals with the positioning rod 11, and a limiting through hole 22 is further provided on the moving contact 2. The positioning block 12 is used to be inserted into the limiting through hole 22 to avoid relative shaking or movement between the moving contact 2 and the contact support 1, so as to realize the limitation of the moving contact 2 on the contact support 1, and thus better avoid the occurrence of position movement and offset when hot riveting the moving contact 2 and the contact support 1 subsequently, and further ensure the accuracy of the hot riveting position.
[0045] Furthermore, as Figure 2 and Figure 7 shown, the contact support 1 further includes a first side surface 14 and a limiting convex plate 15. The first side surface 14 is arranged at an angle on one side of the mounting surface 13, and the limiting convex plate 15 protrudes from the first side surface 14. When the bottom surface 23 is attached and abutted against the mounting surface 13, the moving contact 2 abuts tightly against the limiting convex plate 15.
[0046] As Figure 2 shown, through the abutting effect between the moving contact 2 and the limiting convex plate 15, the moving contact 2 can be more stably arranged on the contact support 1, so as to stably limit the moving contact 2 on the contact support 1, avoid the position movement or shaking of the moving contact 2 relative to the contact support 1, and thus better avoid the occurrence of position movement and offset when hot riveting the moving contact 2 and the contact support 1 subsequently, and better ensure the accuracy of the hot riveting position.
[0047] Furthermore, as Figure 7As shown, there are at least two limiting convex plates 15, and the limiting convex plates 15 are arranged at intervals along the length direction of the first side surface 14, so as to ensure the accuracy of the hot riveting position through the pressing action between the moving contact 2 and multiple limiting convex plates 15 at the same time. In this embodiment, there are four limiting convex plates 15, and the structures of the limiting convex plates 15 can be the same or different. Here, the number of the limiting convex plates 15 is not specifically limited.
[0048] Specifically, the limiting convex plate 15 can be heated and melted, and the overflow glue after the melting of the limiting convex plate 15 flows into the glue discharge groove 131; on the one hand, the overflow glue of the limiting convex plate 15 can be accommodated in each glue discharge groove 131, so as to better avoid the overflow glue when the moving contact 2 is hot riveted to the contact support 1; on the other hand, due to the bonding action between the overflow glue in each glue discharge groove 131 and the bottom surface 23 of the moving contact 2, the hot riveting stability between the moving contact 2 and the contact support 1 can be better ensured.
[0049] Furthermore, as Figures 2 to 7 shown, the moving contact 2 further includes a second side surface 24, a third side surface 25 and a fourth side surface 26 that are adjacent and arranged at an angle in sequence, that is, the third side surface 25 is connected between the second side surface 24 and the fourth side surface 26, and the fourth side surface 26 is used for pressing against the limiting convex plate 15; the contact support 1 further includes a fifth side surface 16 and a sixth side surface 17 that are adjacent and arranged at an angle, and the fifth side surface 16 is arranged opposite to the first side surface 14; that is, an accommodation space is formed among the first side surface 14, the mounting surface 13, the fifth side surface 16 and the sixth side surface 17, one end of the moving contact 2 is limited and hot riveted in the accommodation space, and when the bottom surface 23 abuts against the mounting surface 13, the second side surface 24 is attached to the fifth side surface 16, and the third side surface 25 is attached to the sixth side surface 17.
[0050] In the circuit breaker connection structure of this embodiment, through the limiting action of the positioning rod 11 in the positioning through hole 21, the limiting action of the positioning block 12 in the limiting through hole 22, and the pressing action between the moving contact 2 and the limiting convex plate 15, the moving contact 2 can be stably fixed on the contact support 1, avoiding the position movement or shaking of the moving contact 2 relative to the contact support 1, thereby solving the problem of the offset of the hot riveting position between the moving contact 2 and the contact support 1.
[0051] At the same time, by providing the glue overflow groove 211 to accommodate the overflow glue after the melting of the positioning rod 11, and providing the glue discharge groove 131 to accommodate the overflow glue after the melting of the mounting surface 13 and the overflow glue after the melting of the limiting convex plate 15, the problem of hot riveting overflow glue between the moving contact 2 and the contact support 1 is solved.
[0052] Moreover, through the bonding effect between the overflow glue in the overflow glue groove 211 and the moving contact 2, and the bonding effect between the overflow glue in the glue discharge groove 131 and the moving contact 2, and by forming an umbrella-shaped bonding boss 18 between the top of the positioning rod 11 and the top of the positioning through hole 21, the connection between the contact support 1 and the moving contact 2 becomes more reliable, thus solving the problem of thermal riveting detachment between the moving contact 2 and the contact support 1.
[0053] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.
Claims
1. A circuit breaker connection structure, characterized in that: include: A contact support (1), comprising a positioning rod (11); A moving contact (2) is provided with a positioning through hole (21), a hole wall of the positioning through hole (21) is provided with a glue overflow groove (211), the positioning rod (11) is inserted into the positioning through hole (21), the positioning rod (11) can be melted by heat, and the overflow glue of the positioning rod (11) after melting flows into the glue overflow groove (211).
2. The circuit breaker connection structure according to claim 1, characterized in that: A plurality of the glue overflow grooves (211) are provided, and the plurality of glue overflow grooves (211) are arranged in a ring shape along the hole wall of the positioning through hole (21).
3. The circuit breaker connection structure according to claim 1, characterized in that: The movable contact (2) includes a bottom surface (23), the contact support (1) also includes a mounting surface (13) capable of being melted by heat, the bottom surface (23) is fitted against the mounting surface (13), the positioning rod (11) is arranged on the mounting surface (13), and a glue removal groove (131) is provided on the mounting surface (13).
4. The circuit breaker connection structure according to claim 3, characterized in that: A plurality of the glue discharge grooves (131) are provided, and the plurality of the glue discharge grooves (131) are arranged at intervals along the length direction of the mounting surface (13).
5. The circuit breaker connection structure according to claim 3, characterized in that: A positioning block (12) is also provided on the mounting surface (13), the positioning block (12) and the positioning rod (11) are spaced apart, and a limiting through hole (22) is also provided on the moving contact (2), the positioning block (12) is used to be inserted into the limiting through hole (22).
6. The circuit breaker connection structure according to any one of claims 3 to 5, characterized in that: The contact support (1) further comprises a first side surface (14) and a limiting convex plate (15); the first side surface (14) is arranged at an angle on one side of the mounting surface (13); the limiting convex plate (15) is convexly arranged on the first side surface (14); when the bottom surface (23) abuts against the mounting surface (13), the moving contact (2) is tightly abutted against the limiting convex plate (15).
7. The circuit breaker connection structure according to claim 6, characterized in that: At least two limiting convex plates (15) are provided.
8. The circuit breaker connection structure according to claim 6, characterized in that: The limiting convex plate (15) can be melted by heat, and the overflowing glue after the limiting convex plate (15) is melted flows into the glue discharge groove (131).
9. The circuit breaker connection structure according to claim 6, characterized in that: The movable contact (2) further comprises a second side surface (24), a third side surface (25) and a fourth side surface (26) which are adjacent and arranged at an angle in sequence, and the fourth side surface (26) is used to abut against the limiting convex plate (15); the contact support (1) further comprises a fifth side surface (16) and a sixth side surface (17) which are adjacent and arranged at an angle, and the fifth side surface (16) is arranged opposite to the first side surface (14), and when the bottom surface (23) abuts against the mounting surface (13), the second side surface (24) is in contact with the fifth side surface (16), and the third side surface (25) is in contact with the sixth side surface (17).
10. A circuit breaker comprising a housing (3), and an operating system (4), an arc extinguishing system (5) and a contact system (6) respectively arranged in the housing (3), characterized in that: It also comprises a circuit breaker connection structure as claimed in any one of claims 1 to 9, wherein the contact support (1) is arranged in the operating system (4), and the moving contact (2) is arranged in the contact system (6).