Load switch with good arc extinguishing effect
By introducing a forked arc-extinguishing plate and an arc-draining hole into the load switch, the problem of the arc not being extinguished when the circuit is disconnected is solved, achieving more efficient arc extinguishing capability and equipment maintenance convenience, and improving the safety and lifespan of the equipment.
Patent Information
- Application Number
- CN202422817345.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-19
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-11-19
AI Technical Summary
Existing load switches generate strong electric arcs when disconnecting the circuit, which cannot be effectively extinguished, leading to an increased risk of equipment damage and power accidents.
Design an arc extinguishing assembly including a forked arc extinguishing plate and an arc discharge hole, which cuts and discharges the electric arc upward through the bending part and the arc discharge hole, and combines a detachable design to improve the arc extinguishing effect and maintenance convenience.
It significantly improves arc extinguishing effect, reduces equipment damage, increases switch reliability and service life, and ensures operational stability and safety.
Smart Images
Figure CN223598579U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to load switch technical field, concretely relates to a load switch with good arc extinguishing effect. BACKGROUND
[0002] In the power system, as an important electrical component, the performance of load switch is directly related to the safety and stability of the power system. During the switching process, especially when the circuit is disconnected, strong arc will be generated, which will cause damage to the switch device if not effectively extinguished, and even cause greater power accidents. Therefore, how to design a load switch with good arc extinguishing effect is an urgent problem to be solved in the field of power switch device technology. SUMMARY
[0003] (I) Technical problem to be solved
[0004] To solve the above problems, the utility model provides a load switch with good arc extinguishing effect, which aims to solve the problem that in the prior art, during the switching process, especially when the circuit is disconnected, strong arc will be generated, which will cause damage to the switch device if not effectively extinguished, and even cause greater power accidents.
[0005] (II) Technical scheme
[0006] The utility model relates to a load switch with good arc extinguishing effect, which comprises:
[0007] A switch body comprising a first terminal and a second terminal, the first terminal is arranged at the upper part of the switch body, and the second terminal is arranged at the lower part of the switch body;
[0008] A movable contact assembly rotatably arranged on the switch body, the movable contact assembly comprises a movable contact body, one end of the movable contact body is connected with the second terminal;
[0009] A stationary contact fixedly arranged on the upper part of the switch body, the stationary contact is connected with the first terminal;
[0010] An arc extinguishing assembly detachably arranged on the stationary contact, the arc extinguishing assembly comprises a frame body and a plurality of arc extinguishing sheets arranged side by side on the frame body;
[0011] An arc extinguishing gap is arranged between two adjacent arc extinguishing sheets, a curved portion is arranged at the middle part of the arc extinguishing sheet, and an arc discharge hole extending upward is arranged at the bottom of the arc extinguishing sheet, which is used for cutting the arc generated by the contact between the stationary contact and the movable contact and discharging upward.
[0012] In the utility model, the arc-letting hole includes first orifice, hole channel and second orifice, the first orifice is located the bottom of the middle position of the arc extinguishing piece, the adjacent two first orifices are not connected mutually between the first orifice and the second orifice.
[0013] The second orifice is arranged on the curved portion, and two ends of the hole channel are connected with the first orifice and the second orifice respectively.
[0014] In the utility model, the arc extinguishing piece is fork-shaped structure, the curved portion is located in the middle of the arc extinguishing piece, and the curved portion is formed by three smooth bending sections, the curved portion includes first bending section, second bending section and third bending section, the second bending section is outwardly convexly arranged.
[0015] The second orifice is arranged on the first bending section.
[0016] In the utility model, the first orifice and the second orifice are triangular structure and / or circular structure and / or rectangular structure.
[0017] In the utility model, a plurality of mounting grooves are arranged on the frame body, a limiting step is arranged on one side wall of the mounting groove, a notch is arranged on the top of the arc extinguishing piece and matched with the mounting groove, and a convex platform matched with the limiting step is further arranged on the arc extinguishing piece near the notch, and the bottom of the convex platform is abuttingly arranged with the top surface of the limiting step.
[0018] In the utility model, a limiting part is further arranged on the limiting step side wall of the mounting groove and protrudes into the mounting groove, and the limiting part abuts against the arc extinguishing piece when the arc extinguishing piece is arranged in the mounting groove.
[0019] In the utility model, the frame body is connected with the static contact through the bolt, and the top back surface of the frame body is abuttingly arranged with the switch main body.
[0020] (Three) beneficial effects
[0021] Compared with the prior art, the utility model has the beneficial effects that:
[0022] (1) In the utility model, the load switch is improved in arc extinguishing effect by optimizing the design of the arc extinguishing assembly. Specifically, the curved portion on the arc extinguishing piece and the arc-letting hole design can effectively cut and discharge the arc generated when the static contact and the moving contact are contacted, thereby reducing the damage of the arc to the switch device.
[0023] (2) The detachable design of the arc extinguishing assembly in the utility model is convenient for maintenance and replacement, improves the reliability and service life of the switch, and at the same time, the stable connection mode between the arc extinguishing piece and the frame body also ensures the stability and safety of the arc extinguishing assembly in the switch operation process. BRIEF DESCRIPTION OF DRAWINGS
[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.
[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the load switch;
[0026] Figure 2 It is a schematic diagram of the three-dimensional structure of the arc extinguishing assembly;
[0027] Figure 3 It is a schematic diagram of the side view structure of the frame body;
[0028] Figure 4 It is a schematic diagram of the three-dimensional structure of the arc extinguishing sheet Figure 1 ;
[0029] Figure 5 It is a schematic diagram of the three-dimensional structure of the arc extinguishing sheet Figure 2 .
[0030] 1, switch main body, 11, first terminal, 12, second terminal, 2, moving contact assembly, 21, moving contact body, 3, static contact, 4, arc extinguishing assembly, 41, frame body, 411, mounting groove, 412, limiting step, 413, limiting part, 42, arc extinguishing sheet, 421, arc extinguishing gap, 422, bending part, 4221, first bending section, 4222, second bending section, 4223, third bending section, 423, arc hole, 4231, first orifice, 4232, hole, 4233, second orifice, 424, notch, 425, boss, 5, latch. DETAILED DESCRIPTION
[0031] Compared with the embodiments shown in the drawings, the feasible implementation solutions within the protection scope of the present disclosure can have fewer components, have other components not shown in the drawings, have different components, have differently arranged components or differently connected components, etc. In addition, two or more components in the drawings can be implemented in a single component, or a single component shown in the drawings can be implemented as multiple separate components.
[0032] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains. The terms “first,” “second,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an” or “a” and similar terms do not necessarily indicate a quantity limitation. Terms such as “comprising,” “including,” or “having” mean that the element or object preceding the word encompasses the element or object listed following the word and its equivalents, without excluding other elements or objects. Terms such as “connected” or “connected” are not limited to the physical or mechanical connection or connection shown in the drawings, but may include equivalent connections or connections, whether direct or indirect. Terms such as “upper,” “lower,” “left,” “right,” “horizontal,” and “vertical” are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described object changes.
[0033] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0034] Example 1
[0035] like Figures 1-5 The load switch shown includes a switch body 1, a moving contact assembly 2, and a stationary contact 3 as the supporting frame of the entire load switch. The switch body 1 is designed with a first terminal 11 and a second terminal 12. The first terminal 11 is located at the upper part of the switch body 1 and is used to connect the input terminal of the power supply or load. The second terminal 12 is located at the lower part of the switch body 1 and is connected to the moving contact assembly 2 to realize the switching on and off of the circuit.
[0036] The moving contact assembly 2 is mounted on the switch body 1 via a rotatable mechanism (such as a pin connection). One end of its core component, the moving contact body 21, is connected to the second terminal 12. It can be moved relative to the stationary contact 3 by operation (such as manual or electric drive), thereby controlling the closing and opening of the circuit.
[0037] The stationary contact 3 is fixedly installed on the upper part of the switch body 1 and directly connected to the first terminal 11. As the other end of the circuit, it forms a conductive path with the moving contact body 21 in the closed state. In this embodiment, the stationary contact 3 and the first terminal 11 are an integral structure with an overall L-shaped structure. The stationary contact 3 extends downward, and the first terminal 11 is fixedly installed on the switch body 1 as a base.
[0038] As the support structure of the arc-extinguishing sheet, the frame body 41 is provided with a plurality of mounting grooves 411 for accommodating and fixing the arc-extinguishing sheets 42. A limiting step 412 is designed on one side wall of each mounting groove 411, and a limiting part 413 is protrudingly arranged in the mounting groove, so that the arc-extinguishing sheet 42 is stable and easy to disassemble when being mounted.
[0039] Each arc-extinguishing sheet 42 is provided with a bending part 422 in the middle part thereof, which is formed by three smooth bending parts (a first bending part 4221, a second bending part 4222 and a third bending part 4223), wherein the second bending part 4222 is protruding outward, so as to enhance the arc-extinguishing effect. An arc-extinguishing gap 421 is formed between two adjacent arc-extinguishing sheets 42, which is helpful to disperse and extinguish the arc.
[0040] The bottom of each arc-extinguishing sheet 42 is provided with an arc-letting hole 423 extending upward, which comprises a first hole 4231, a hole channel 4232 and a second hole 4233. The first hole 4231 is arranged at the bottom of the middle part of the arc-extinguishing sheet, and the first holes between two adjacent first holes are not connected, so as to avoid the arc jumping directly. The second hole 4233 is arranged on the first bending part 4221, and the hole channel 4232 connects the first hole 4231 and the second hole 4233, so that the arc can be effectively cut and guided to be discharged upward. The shapes of the first hole 4231 and the second hole 4233 can be triangular, circular or rectangular, so as to adapt to different arc-extinguishing requirements.
[0041] The top of the arc-extinguishing sheet 42 is designed with a notch 424 matched with the mounting groove 411, and a boss 425 matched with the limiting step 412 is arranged near the notch 424, the bottom of the boss 425 is tightly abutted with the top surface of the limiting step 412, so as to ensure the stability of the arc-extinguishing sheet 42 in the mounting groove 411.
[0042] The frame body 41 is connected with the static contact 3 through the bolt 5, and the top back surface of the frame body 41 is tightly abutted with the switch body 1, so as to form a stable mounting structure.
[0043] Specifically, when the movable contact body 21 is separated from or contacted with the static contact 3, if the arc is generated, the arc will be dispersed by the arc-extinguishing gap 421 between the adjacent arc-extinguishing sheets 42 first, then enter the hole channel 4232 through the first hole 4231 of the arc-letting hole 423, and under the guidance of the bending part 422, the arc is further cut and elongated, and finally discharged to the external space through the second hole 4233, so as to be rapidly cooled and extinguished, thereby effectively improving the arc-extinguishing ability and operation safety of the load switch.
[0044] Through the above design, the load switch has excellent arc-extinguishing effect, and is convenient to maintain (such as replacing the arc-extinguishing sheet 42), so as to improve the reliability and service life of the equipment.
[0045] The above-described embodiments are merely preferred embodiments of the present application, and are not intended to limit the design concept and scope of the present application. Without departing from the design concept of the present application, various modifications and improvements to the technical solutions of the present application made by those of ordinary skill in the art shall fall within the protection scope of the present application, and the technical content of the present application claimed for protection has been entirely recorded in the claims.
Claims
1. A load switch with good arc extinguishing effect, characterized in that, The load switch includes: The switch body includes a first terminal and a second terminal, wherein the first terminal is disposed on the upper part of the switch body and the second terminal is disposed on the lower part of the switch body; A moving contact assembly is rotatably mounted on the switch body. The moving contact assembly includes a moving contact body, one end of which is connected to the second terminal. A stationary contact is fixedly disposed on the upper part of the switch body, and the stationary contact is connected to the first terminal; An arc-extinguishing assembly is detachably mounted on the stationary contact. The arc-extinguishing assembly includes a frame and multiple arc-extinguishing plates arranged in parallel on the frame. An arc-extinguishing gap is provided between two adjacent arc-extinguishing plates. A curved portion is provided in the middle of the arc-extinguishing plate. An arc-venting hole extending upward is provided at the bottom of the arc-extinguishing plate to cut the electric arc generated by the contact between the stationary contact and the moving contact and discharge it upward.
2. The load switch with good arc extinguishing effect according to claim 1, characterized in that, The arc extinguishing hole includes a first opening, a channel, and a second opening. The first opening is located at the bottom of the middle position of the arc extinguishing plate, and adjacent first openings are not connected to each other. The second orifice is provided on the curved portion, and the two ends of the channel are respectively connected to the first orifice and the second orifice.
3. The load switch with good arc extinguishing effect according to claim 2, characterized in that, The arc-extinguishing plate has a fork-shaped structure, and the curved part is located in the middle of the arc-extinguishing plate. The curved part is formed by three smooth bends, including a first bend, a second bend, and a third bend. The second bend protrudes outward. The second opening is located on the first bending section.
4. The load switch with good arc extinguishing effect according to claim 3, characterized in that, The first opening and the second opening are triangular and / or circular and / or rectangular structures.
5. The load switch with good arc extinguishing effect according to any one of claims 1-4, characterized in that, The frame is provided with multiple mounting slots, and a limiting step is provided on one side wall of the mounting slot. The top of the arc extinguishing plate is provided with a notch that mates with the mounting slot. Near the notch, the arc extinguishing plate is also provided with a boss that mates with the limiting step. The bottom of the boss abuts against the top surface of the limiting step.
6. The load switch with good arc extinguishing effect according to claim 5, characterized in that, The mounting groove has a limiting step on one side wall, and a limiting part protruding into the mounting groove is also provided. When the arc extinguishing plate is placed in the mounting groove, the limiting part abuts against the arc extinguishing plate.
7. The load switch with good arc extinguishing effect according to claim 6, characterized in that, The frame is connected to the stationary contact via a pin, and the top back of the frame abuts against the switch body.