Large-current switch with protection function
By combining a structure of springs, drive contacts, and shift plates, along with a reinforced design for the switch housing and base, the problem of the switch easily burning out under high current has been solved, thus improving stability and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YUEQING ANHE ELECTRONICS CO LTD
- Filing Date
- 2025-05-22
- Publication Date
- 2026-04-17
AI Technical Summary
Existing switches are prone to burnout when subjected to high current and cannot provide automatic protection.
The switch employs a combination structure of spring, drive contact, shift plate, side conductive copper plate and central copper plate, combined with the reinforced design of the switch housing and bottom shell, to ensure the stability and safety of the switch during long-term use.
This technology enables the switch to stably withstand large currents during prolonged use and automatically disconnect when it can no longer withstand the current, ensuring safety and extending its service life.
Smart Images

Figure CN224138076U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of switch technology, specifically a high-current switch with protection function. Background Technology
[0002] A switch is a device used to control the on / off state of a circuit. It can be operated manually, automatically, or remotely to connect, disconnect, or switch the path of current. It is one of the most fundamental components in electrical, electronic systems, and mechanical equipment.
[0003] Basic function
[0004] A switch controls the flow of current by physically or electronically connecting or disconnecting conductors (contacts) in a circuit. For example, when a light switch is pressed, the circuit is connected (the light turns on); when pressed again, the circuit is disconnected (the light turns off).
[0005] Main uses
[0006] Safety controls: disconnecting power to protect equipment or personal safety (e.g., circuit breakers).
[0007] Equipment start / stop: Controlling the operating status of electrical and mechanical equipment (such as power switches).
[0008] Path switching: Switching between multiple circuits or functions (such as multi-position switches, network switches).
[0009] Structural features
[0010] Contact: A conductive component responsible for conducting or isolating current.
[0011] Operating mechanisms, such as buttons, levers, and touch screens, are used to trigger switching actions.
[0012] Outer casing: Encased in insulating material to ensure safe operation.
[0013] However, currently, some switches cannot withstand large currents during use, resulting in burnout and the switches themselves being unable to provide automatic protection. Therefore, there is an urgent need for an improved technology to solve this problem in the existing technology. Utility Model Content
[0014] The purpose of this invention is to provide a high-current switch with good stability, which maintains excellent stability even after prolonged use. Furthermore, the reinforced structure of this switch allows it to withstand large currents for extended periods while maintaining good safety performance, thus solving the problems mentioned in the background art.
[0015] To achieve the above objectives, this utility model provides the following technical solution: a high-current switch with protection function, comprising a high-current switch body, wherein the high-current switch body is provided with a switch button, a switch housing, and a switch bottom housing, wherein the switch button, switch housing, and switch bottom housing are internally provided with a spring, a drive contact, a shift plate, a side conductive copper plate, and a central copper plate.
[0016] The measurement of the central copper sheet is symmetrically provided with side conductive copper sheets;
[0017] The shift plate is positioned directly above the central copper plate.
[0018] Preferably, the top of the switch button is concave and rounded, and two mating cylinders are symmetrically arranged at the bottom of the inside of the switch button. A mating shaft is provided in the center of the outer two side walls of the switch button, and the mating shaft and the switch button are an integral structure.
[0019] The spring and drive contact are fitted inside two mating cylinders located below the switch button, and the spring and drive contact are movably mounted to the mating cylinders.
[0020] Preferably, the front and back sidewalls of the switch housing are symmetrically provided with anti-disengagement slots, the upper edges of the front and back sidewalls of the switch housing are evenly provided with clamping blocks, and the upper edges of the front and back sidewalls of the switch housing are provided with shaft mating mounting holes in the center.
[0021] The switch housing has a centrally located mounting bracket beam with two symmetrical mounting holes inside. The outer walls of the mounting bracket beam have symmetrical mounting grooves on both sides. The inner walls of the front and back sides of the switch housing have side mounting blocks. The left and right side walls of the switch housing have anti-disengagement springs.
[0022] Preferably, the upper surface of the switch base is provided with isolation ribs, the interior of the switch base is provided with conductive copper sheet mounting grooves, the conductive copper sheet mounting grooves penetrate the switch base and are distributed between the isolation ribs, the four edges of the upper edge of the switch base are provided with buckles, the outer surface of the buckles is provided with anti-disengagement claws, the bottom surface of the switch base is provided with cross reinforcing ribs, the bottom surface of the switch base is provided with reinforcing protrusions, and the reinforcing protrusions are provided at the edge of the slot of the conductive copper sheet mounting groove.
[0023] Preferably, the shift plate is V-shaped, with its center mounted on the top claw of the central copper plate. Contact blocks are provided inside the two wing ends of the shift plate, and the contact blocks on the two wings of the shift plate are installed in conjunction with the contact blocks on the top of the side conductive copper plate.
[0024] Compared with the prior art, the beneficial effects of this utility model are:
[0025] (1) The spring and the drive contact are installed inside the two mating cylinders below the switch button. The spring and the drive contact are movably installed with the mating cylinders. By pressing the switch button, the spring and the drive contact inside the mating cylinders are driven, so that the drive contact drives the metal spring in different directions to conduct. The mating cylinders have a limiting effect on the drive contact. At the same time, the mating cylinders can stably control the running direction of the drive contact for a long time.
[0026] (2) The isolation ribs and reinforcing protrusions on the bottom shell of the switch have a good isolation and fixing effect on the conductive metal sheet, enabling the switch to withstand the passage of large current for a long time. The reinforcing protrusions improve the stability of the side conductive copper sheet and the central copper sheet after installation, thereby improving the service life of the switch.
[0027] (3) The shift plate uses the contact blocks on both wings to connect the conducting copper plates on both sides of the central copper plate, so as to realize flexible conduction and switching of different gears. When the switch is subjected to a large current that it cannot withstand, the shift plate will automatically disconnect from the conducting copper plate to protect the switch.
[0028] (4) The mounting bracket beam inside the switch housing, the side mounting block, and the isolation ribs, cross reinforcing ribs, and reinforcing protrusions on the bottom shell of the switch are combined to ensure that the metal conductive pieces inside the switch are stably installed in their respective positions. Each side conductive copper piece and the central copper piece do not interfere with each other, so that the switch can withstand the passage of large current and ensure the overall stability of the switch.
[0029] (5) The high current switch body is small in size and simple in structure. The switch has good stability performance and still has good stability after long-term use. Moreover, the reinforced structure of the switch allows the switch to withstand the passage of large current for a long time and still maintain good safety performance. At the same time, when the switch is connected to an unbearable large current for a long time, the switch will automatically disconnect and automatically protect the switch. Attached Figure Description
[0030] Figure 1 This is an exploded view of the overall high-current switch of this utility model;
[0031] Figure 2 This is the exploded front view of the high-current switch of this utility model;
[0032] Figure 3 This is an exploded side view of the high-current switch of this utility model;
[0033] Figure 4 This is a schematic diagram of the switch housing structure of this utility model;
[0034] Figure 5This is a schematic diagram of the switch housing structure of this utility model;
[0035] Figure 6 This is a top view of the switch housing of this utility model;
[0036] Figure 7 This is a bottom view of the switch housing of this utility model;
[0037] Figure 8 This is a schematic diagram of the switch base of this utility model;
[0038] Figure 9 This is a bottom view of the switch housing of this utility model;
[0039] Figure 10 This is a schematic diagram of the shift plate structure of this utility model;
[0040] Figure 11 This is a schematic diagram of the installation structure of the side conductive copper sheet and the central copper sheet of this utility model.
[0041] In the diagram: 1. High-current switch body; 2. Switch button; 3. Spring; 4. Drive contact; 5. Switch housing; 6. Shift plate; 7. Side conductive copper plate; 8. Central copper plate; 9. Switch bottom shell; 10. Anti-disengagement latch; 11. Mounting bracket beam; 12. Side mounting block; 13. Clip; 14. Isolation rib; 15. Reinforcing protrusion. Detailed Implementation
[0042] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0043] Please see Figures 1-11 This utility model provides a technical solution: a high-current switch with protection function, including a high-current switch body 1, a switch button 2, a switch housing 5, and a switch bottom housing 9. The switch button 2, the switch housing 5, and the switch bottom housing 9 are equipped with a spring 3, a drive contact 4, a shift plate 6, a side conductive copper plate 7, and a central copper plate 8. The side conductive copper plates 7 are symmetrically arranged around the central copper plate 8. The shift plate 6 is located directly above the central copper plate 8.
[0044] The top of the switch button 2 is concave and rounded. Two symmetrically arranged mounting cylinders are provided inside the lower part of the switch button 2. A mounting shaft is provided in the center of the outer two side walls of the switch button 2. The mounting shaft and the switch button 2 are integrated into one structure. The spring 3 and the drive contact 4 are arranged inside the two mounting cylinders inside the lower part of the switch button 2. The spring 3 and the drive contact 4 are movably installed with the mounting cylinders. By pressing the switch button 2, the spring 3 and the drive contact 4 inside the mounting cylinders are driven, so that the drive contact 4 drives the metal spring in different directions to conduct. The mounting cylinders have a limiting function for the drive contact 4. At the same time, the mounting cylinders can stably control the running direction of the drive contact 4 for a long time.
[0045] The switch housing 5 has symmetrical anti-disengagement slots 10 on both the front and back side walls. Clamping blocks are evenly distributed along the upper edges of both the front and back side walls. A shaft-fitting mounting hole is located at the center of the upper edges of both the front and back side walls. A mounting bracket beam 11 is located in the center of the interior of the switch housing 5. Two mounting holes are symmetrically arranged inside the mounting bracket beam 11. Mounting grooves are symmetrically arranged on both outer sides of the mounting bracket beam 11. Side mounting blocks 12 are provided on both the front and back inner side walls of the switch housing 5. Anti-disengagement springs are provided on both the left and right side walls of the switch housing 5. The switch housing 5 is integrally molded. The switch housing 5 not only has a clamping and fixing function but also can be clamped and fixed with external components. The mounting bracket beam 11 inside the switch housing 5 provides excellent fitting and mounting for the switch components.
[0046] The upper surface of the switch base 9 is provided with isolation ribs 14, and the interior of the switch base 9 is provided with conductive copper sheet mounting grooves that penetrate through the switch base 9. The conductive copper sheet mounting grooves are distributed among the isolation ribs 14. Each of the four edges of the upper edge of the switch base 9 is provided with a buckle 13, and the outer surface of the buckle 13 is provided with an anti-disengagement claw. The bottom surface of the switch base 9 is provided with a cross reinforcing rib, and the bottom surface of the switch base 9 is provided with a reinforcing protrusion 15. The reinforcing protrusion 15 is located at the edge of the slot of the conductive copper sheet mounting groove. The isolation ribs 14 and reinforcing protrusions 15 on the switch base 9 have a good isolation and fixing effect on the conductive metal sheet, enabling the switch to withstand the passage of large current for a long time. The reinforcing protrusions 15 improve the stability of the side conductive copper sheet 7 and the central copper sheet 8 after installation, thereby improving the service life of the switch.
[0047] The mounting bracket beam 11 and side mounting block 12 inside the switch housing 5 are combined with the isolation rib 14, cross reinforcing rib and reinforcing protrusion 15 on the switch bottom housing 9, so that the metal conductive pieces inside the switch are stably installed in their own positions. Each side conductive copper piece 7 and the central copper piece 8 do not interfere with each other, so that the switch can withstand the passage of large current and ensure the overall stability of the switch.
[0048] The shift plate 6 is V-shaped, and its center is mounted on the top claw of the central copper plate 8. The two wing ends of the shift plate 6 are equipped with contact blocks. The contact blocks on the two wings of the shift plate 6 are installed in conjunction with the contact blocks on the top of the side conductive copper plates 7. The shift plate 6 uses the contact blocks on the two wings to connect the conductive copper plates 7 on both sides of the central copper plate 8, so as to realize flexible conduction and switching of different gears. When the switch is subjected to a large current that it cannot withstand, the shift plate 6 will automatically disconnect from the conductive copper plates to protect the switch.
[0049] The high-current switch body 1 is small in size and simple in structure. It has good stability performance and maintains good stability even after long-term use. Moreover, the reinforced structure of the switch allows it to withstand the passage of large currents for a long time while maintaining good safety performance. At the same time, if the switch is connected to an unbearable large current for a long time, the switch will automatically disconnect to provide automatic protection.
[0050] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A high current switch with a protection function comprising a high current switch body (1), characterized in that: The high current switch body (1) is provided with a switch button (2), a switch housing (5), and a switch bottom housing (9). The switch button (2), the switch housing (5), and the switch bottom housing (9) are provided with a spring (3), a drive contact (4), a shift plate (6), a side conductive copper plate (7), and a central copper plate (8). The central copper sheet (8) is symmetrically provided with side conductive copper sheets (7); The shift plate (6) is positioned directly above the central copper plate (8).
2. A high current switch with protection function according to claim 1, characterized in that: The top of the switch button (2) is concave in an arc shape. Two mating cylinders are symmetrically arranged inside the switch button (2) at the bottom. A mating shaft is provided in the center of the outer two side walls of the switch button (2). The mating shaft and the switch button (2) are an integral structure. The spring (3) and the drive contact (4) are fitted inside the two mating cylinders below the switch button (2), and the spring (3) and the drive contact (4) are movably mounted with the mating cylinders.
3. A high current switch with protection function according to claim 1, characterized in that: The switch housing (5) is provided with anti-disengagement slots (10) symmetrically on the front and back side walls. The upper edges of the front and back side walls of the switch housing (5) are provided with clamping blocks evenly. The upper edges of the front and back side walls of the switch housing (5) are provided with shaft fitting mounting holes. The switch housing (5) has a mounting bracket beam (11) in the center of its interior. The mounting bracket beam (11) has two symmetrical mounting holes inside. The outer walls of the mounting bracket beam (11) have symmetrical mounting grooves on both sides. The inner walls of the front and back sides of the switch housing (5) are provided with side mounting blocks (12). The left and right side walls of the switch housing (5) are provided with anti-disengagement springs.
4. A high current switch with protection function according to claim 1, characterized in that: The upper surface of the switch base (9) is provided with isolation ribs (14), and the interior of the switch base (9) is provided with a copper strip mounting groove. The copper strip mounting groove penetrates the switch base (9) and is distributed between the isolation ribs (14). The four edges of the upper edge of the switch base (9) are provided with buckles (13). The outer surface of the buckles (13) is provided with anti-disengagement claws. The bottom surface of the switch base (9) is provided with cross reinforcing ribs and reinforcing protrusions (15). The reinforcing protrusions (15) are located at the edge of the slot of the copper strip mounting groove.
5. A high current switch with protection function according to claim 1, characterized in that: The shift plate (6) is V-shaped, and the center of the shift plate (6) is mounted on the top claw of the central copper plate (8). The two wing ends of the shift plate (6) are provided with contact blocks, and the contact blocks on the two wings of the shift plate (6) are installed in conjunction with the contact blocks on the top of the side conductive copper plate (7).