Gas production partition plate, arc extinguish chamber structure and circuit breaker
By setting a convex rib structure on the back of the gas-producing partition to cooperate with the cover and base limit of the circuit breaker, the problems of dynamic contact stagnation and creepage distance reduction caused by the internal contraction deformation of the gas-producing partition are solved, ensuring that the circuit breaker works normally.
Patent Information
- Application Number
- CN202421678042.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-16
- Publication Date
- 2025-08-12
- Estimated Expiration
- 2034-07-16
AI Technical Summary
The gas-producing partitions in the arc-extinguishing chamber structure of the existing circuit breaker are prone to contraction and deformation after arc ablation, resulting in stagnation of the moving contacts, slowing down the movement speed, and even unable to open and close normally, and reduce the creepage distance between the moving contacts and the gas-producing partition, which is easy to be broken down.
A convex rib structure is provided on the back of the gas-producing partition for limiting cooperation with the cover and/or base of the circuit breaker, and stable connection is achieved through plugging to prevent internal shrinkage and deformation.
Effectively prevent the gas-producing partition from shrinking and deforming after arc ablation, avoid the movement of moving contacts, ensure the normal opening and closing of the circuit breaker, prevent the creepage distance from being reduced, and avoid breakdown.
Smart Images
Figure CN223218242U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of circuit breakers, in particular to a gas generating partition, an arc extinguishing chamber structure and a circuit breaker. Background Art
[0002] Refer to the attached Figure 9 An arc extinguishing chamber structure of an existing circuit breaker includes an arc extinguishing grid 1', two side partitions 2' and a gas-generating partition 3'. Since the gas-generating partition 3' of the existing arc extinguishing chamber has no limit inside the product and is fixed to the two side partitions 2' by screws, the gas-generating partition 3' may shrink and deform after arc erosion. The shrinkage and deformation of the gas-generating partition 3' may cause the moving contact to become stuck and the movement speed to slow down. In severe cases, the circuit breaker product may not be able to open and close normally. In addition, the shrinkage and deformation of the gas-generating partition 3' will also reduce the creepage distance between the moving contact and the gas-generating partition 3', making the moving contact and the gas-generating partition 3' more likely to be broken down. Utility Model Content
[0003] In response to the shortcomings of the existing technology, the utility model provides a gas-generating baffle, which mainly solves the technical problem that the gas-generating baffle of the existing circuit breaker arc extinguishing chamber structure is prone to inward deformation after arc erosion, which in turn causes the moving contact to become stuck during movement or even unable to open and close normally.
[0004] To achieve the above-mentioned purpose, the present invention is realized through the following technical solutions:
[0005] A gas-generating baffle is provided on the back of which a convex rib structure is provided for limiting cooperation with a cover body and / or a base of a circuit breaker.
[0006] Furthermore, the rib structure includes an upper rib for limiting cooperation with the cover body and / or a lower rib for limiting cooperation with the base.
[0007] Furthermore, the upper end of the upper rib is in a wedge-shaped structure.
[0008] Furthermore, the rib structure is a vertically arranged one-piece long strip rib, the upper end of the one-piece long strip rib is configured to be used for plugging and limiting cooperation with the cover body, and the lower end of the one-piece long strip rib is configured to be used for plugging and limiting cooperation with the base.
[0009] Based on the same inventive concept, the utility model also provides an arc extinguishing chamber structure, including an arc extinguishing grid, side partitions installed on both sides of the arc extinguishing grid and the above-mentioned gas-generating partitions, and the two gas-generating partitions are respectively connected to the inner sides of the two side partitions.
[0010] Furthermore, the gas production partition and the side partition are locked by screws.
[0011] Based on the same inventive concept, the utility model also provides a circuit breaker, including a cover, a base and the above-mentioned arc extinguishing chamber structure, and the rib structure on the gas-generating partition of the arc extinguishing chamber structure is used for adaptive connection with the cover and / or the base.
[0012] Furthermore, the cover and / or the base are respectively provided with a first slot and a second slot for plugging into the rib structure.
[0013] Furthermore, the rib structure is clearance-fitted with both the first slot and the second slot.
[0014] The above technical solution has the following advantages or beneficial effects:
[0015] In the gas-producing baffle, arc extinguishing chamber structure and circuit breaker described in the present invention, a convex rib structure is provided on the back of the gas-producing baffle, so that the gas-producing baffle can be plugged and limitedly matched with the cover body and the base, thereby effectively improving the problem of the inward deformation of the gas-producing baffle caused by arc erosion, thereby avoiding the defect that the movement process of the circuit breaker moving contact caused by the inward deformation of the gas-producing baffle is stuck and the movement speed is slowed down, or even the circuit breaker product cannot be opened and closed normally. In addition, it can also avoid the problem that the creepage distance between the gas-producing baffle and the moving contact is reduced due to the inward deformation of the gas-producing baffle, which makes the moving contact and the gas-producing baffle more susceptible to breakdown. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a structural schematic diagram of the gas-producing baffle in Example 1 of the present utility model.
[0017] Figure 2 It is a structural schematic diagram of the arc extinguishing chamber structure of the first embodiment of the present utility model.
[0018] Figure 3 It is a cross-sectional view of the arc extinguishing chamber structure and the base assembly structure of the first embodiment of the present invention.
[0019] Figure 4 yes Figure 3 A partial enlarged view of point A in the figure.
[0020] Figure 5 It is a schematic diagram of the assembly structure of the arc extinguishing chamber structure and the base in the first embodiment of the present utility model.
[0021] Figure 6 It is a cross-sectional view of the assembly structure of the arc extinguishing chamber structure and the cover body of the first embodiment of the present utility model.
[0022] Figure 7 yes Figure 6 A partial enlarged view of point B in FIG.
[0023] Figure 8 It is a structural diagram of a circuit breaker according to the first embodiment of the present invention.
[0024] Figure 9 It is a three-dimensional structural diagram of the arc extinguishing chamber structure of a circuit breaker in the prior art.
[0025] Description of labels:
[0026] 1. Arc extinguishing grid, 2. Side partition, 3. Gas generating partition, 4. Cover, 5. Base, 31. Upper rib, 32. Lower rib, 41. First slot, 51. Second slot. DETAILED DESCRIPTION
[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0028] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.
[0029] Example 1
[0030] Please refer to the attached Figure 1 To the attached Figure 8 One embodiment of the present invention provides a gas-producing baffle, wherein the back of the gas-producing baffle 3 is provided with a rib structure for limiting the fit with the cover 4 and the base 5 of the circuit breaker. It is understandable that in this embodiment, by providing the rib structure on the back of the gas-producing baffle 3, the gas-producing baffle 3 can be plugged and limited with the cover 4 and the base 5, thereby effectively improving the problem of the inward deformation of the gas-producing baffle 3 caused by arc erosion, thereby avoiding the defect of the circuit breaker moving contact being stuck and slowing down the movement speed due to the inward deformation of the gas-producing baffle, or even the defect that the circuit breaker product cannot open and close normally. In addition, it can also avoid the problem that the creepage distance between the gas-producing baffle 3 and the moving contact is reduced due to the inward deformation of the gas-producing baffle 3, which makes the moving contact and the gas-producing baffle 3 more susceptible to breakdown.
[0031] Please refer to the attached Figure 1 To the attached Figure 7The rib structure includes an upper rib 31 for positional engagement with the cover 4 and a lower rib 32 for positional engagement with the base 5. The interlocking engagement between the upper rib 31 and the cover 4, and the interlocking engagement between the lower rib 32 and the base 5, effectively prevents the gas-producing baffle 3 from shrinking and deforming as a whole after arc erosion. Furthermore, even if the gas-producing baffle 3 tends to shrink and deform after arc erosion, the positional engagement between the cover 4 and the base 5 maintains the distance from the inside of the arc extinguishing chamber, preventing the moving contact from coming too close to the gas-producing baffle 3 and causing it to become stuck.
[0032] Please refer to the attached Figure 1 To the attached Figure 9 One embodiment of the present invention further provides an arc extinguishing chamber structure, comprising an arc extinguishing grid 1, side baffles 2 mounted on both sides of the arc extinguishing grid 1, and two aforementioned gas generating baffles 3, the two gas generating baffles 3 being connected to the inner sides of the two side baffles 2, respectively. Preferably, the gas generating baffles 3 are fastened to the side baffles 2 by screws, which can improve fastening efficiency.
[0033] Please refer to the attached Figure 1 To the attached Figure 8 One embodiment of the present invention further provides a circuit breaker, comprising a cover 4, a base 5, and the aforementioned arc extinguishing chamber structure. The rib structure on the gas-generating baffle 3 of the arc extinguishing chamber structure is adapted to engage with the cover 4 and / or the base 5. In one preferred embodiment, the cover 4 and the base 5 are each provided with a first slot 41 and a second slot 51 for engaging with the rib structure. The rib structure and the first slot 41 and the second slot 51 are both clearance-fitted.
[0034] Example 2
[0035] The only difference between this embodiment and the first embodiment is that the rib structure only includes an upper rib 31 for limiting cooperation with the cover body 4, and the back of the gas-producing baffle 3 is limited and reinforced by the plug-in limiting cooperation between the upper rib 31 and the cover body 4.
[0036] Example 3
[0037] The difference between this embodiment and the first embodiment is that the rib structure only includes a lower rib 32 for limiting cooperation with the base 5, and the back of the gas-producing baffle 3 is limited and reinforced by the plug-in limiting cooperation between the lower rib 32 and the base 5.
[0038] Example 4
[0039] The only difference between this embodiment and the first embodiment is that the rib structure is a vertically disposed, integrated, elongated rib. The upper end of the integrated, elongated rib is configured to engage with the cover 4 for a limited insertion, and the lower end of the integrated, elongated rib is configured to engage with the base 5 for a limited insertion. However, those skilled in the art will appreciate that, in other embodiments, the rib structure is not limited to the specific implementations disclosed in the above embodiments and may also have other structures, as long as they can prevent the gas-generating baffle 3 from shrinking and deforming.
[0040] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate from the spirit and scope of the technical solutions of the embodiments of the present invention. Therefore, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present invention.
Claims
1. A gas-producing baffle, characterized in that: The back of the gas-generating baffle (3) is provided with a convex rib structure for limiting cooperation with the cover (4) and / or the base (5) of the circuit breaker.
2. The gas generating baffle according to claim 1, characterized in that: The rib structure comprises an upper rib (31) for position-limiting cooperation with the cover body (4) and / or a lower rib (32) for position-limiting cooperation with the base (5).
3. The gas generating baffle according to claim 2, characterized in that: The upper end of the upper rib (31) is in a wedge-shaped structure.
4. The gas generating baffle according to claim 1, wherein: The rib structure is a vertically arranged one-piece long strip rib, the upper end of the one-piece long strip rib is configured to be used for plugging and limiting cooperation with the cover body (4), and the lower end of the one-piece long strip rib is configured to be used for plugging and limiting cooperation with the base (5).
5. An arc extinguishing chamber structure, characterized in that: The invention comprises an arc extinguishing grid (1), side baffles (2) installed on both sides of the arc extinguishing grid (1), and two gas generating baffles (3) according to any one of claims 1 to 4, wherein the two gas generating baffles (3) are respectively connected to the inner sides of the two side baffles (2).
6. The arc extinguishing chamber structure according to claim 5, characterized in that: The gas-generating partition (3) and the side partition (2) are locked by screws.
7. A circuit breaker, characterized in that: The arc extinguishing chamber structure comprises a cover (4), a base (5) and the arc extinguishing chamber structure according to claim 5 or 6, wherein the rib structure on the gas generating baffle (3) of the arc extinguishing chamber structure is used for adaptive connection with the cover (4) and / or the base (5).
8. The circuit breaker according to claim 7, wherein: The cover (4) and / or the base (5) are respectively provided with a first slot (41) and a second slot (51) for plugging into the rib structure.
9. The circuit breaker according to claim 8, characterized in that: The rib structure is clearance-fitted with both the first slot (41) and the second slot (51).