Switch

Abstract

The invention provides a switch which comprises an insulating shell, a moving contact assembly, a static contact, a wiring board, an electric driving system and a flexible connection conductor, the moving contact assembly comprises a moving reed or a moving elastic steel wire, a contact support and a moving contact conductive piece, the contact support is made of an insulating material or a metal material, and the moving contact conductive piece is made of an insulating material or a metal material. Or the contact support is directly and integrally made of a movable contact spring or a movable elastic steel wire, the movable contact conductive piece is fixedly arranged with the movable contact spring or the movable elastic steel wire, is arranged at the upper part or the lower part of the movable contact spring or the movable elastic steel wire or fully or partially surrounds the movable contact spring or the movable elastic steel wire, and the flexible connection conductor is arranged at at least one position on the movable contact conductive piece. According to the switch, the conductive sectional area and the heat dissipation surface area are increased through the surrounding type moving contact conductive piece structure, more flexible connection conductor welding points are further arranged, the internal resistance of the switch is effectively reduced, the heat dissipation performance is improved, meanwhile, the size is smaller and more compact, the size is smaller, and the size is smaller. And the cost is lower.

Description

Technical Field

[0001] This invention relates to the field of low-voltage electrical appliances, and more specifically to a switch. Background Technology

[0002] The switches used in existing power control systems are difficult to exceed 100A rated current under their current size and structure. Because the moving springs of conventional switches are made of copper alloy material with lower conductivity than pure copper in order to ensure elasticity and conductivity, the copper alloy material is generally made very thin due to the size of the output force of the drive device. The number of moving spring layers does not exceed five. Otherwise, the operation is unreliable and it is easy to cause malfunctions and failure to operate, which can cause serious electrical accidents, fires and personal injuries. With economic development, the power consumption of equipment is rising rapidly. Conventional switches cannot meet the current capacity growth without changing the size. Summary of the Invention

[0003] Based on the above background, in order to solve at least one of the above problems, the present invention provides a switch that reduces loop resistance, improves heat dissipation efficiency, and enables the switch to achieve small size and large capacity, thus overcoming the above problems.

[0004] This application discloses a switch, comprising at least an insulating shell and internal components. The internal components include at least a moving contact assembly, a stationary contact, a terminal block, an electric drive system, and a flexible conductor. The moving contact assembly includes at least a moving spring or a moving elastic wire, a contact support, and a moving contact conductive element. The contact support is made of insulating material or metal material, or the contact support is integrally formed from the moving spring or the moving elastic wire. The moving contact conductive element is elongated, fully enclosed, or partially enclosed. The moving contact conductive element is fixedly disposed above or below the moving spring or the moving elastic wire, or is fully or partially enclosed. The flexible conductor is disposed at least once on the moving contact conductive element and is connected to the terminal block.

[0005] In the above embodiments, the switch, as a control electrical component, uses insulating material as its supporting shell. Internally, it includes a moving contact assembly, a stationary contact, a terminal block, an electrical drive system, and a flexible conductor. The moving contact assembly consists of a moving spring or a moving elastic steel wire, a contact support, and a moving contact conductive component. The contact support is made of insulating material or metal. Metal components offer high strength and high heat resistance or heat dissipation, making them suitable for high-current switches. Insulating components can be made of materials such as plastic or ceramic. Plastics are easy to process and have high production efficiency, but their high-temperature resistance is slightly poor, making them suitable for small-sized switches. Ceramic is more expensive, but it has excellent temperature resistance. Specific material selection can be flexible and based on actual conditions. The contact support can also be integrated with the moving spring or moving elastic steel wire, extending directly from one or more moving springs or one or more moving elastic steel wires. This simplifies the process and significantly reduces material and manufacturing costs. The moving contact conductive element is attached as a straight strip above or below the moving spring or moving elastic steel wire, or it is fully or partially surrounded by the moving spring or moving elastic steel wire in a ring-shaped structure. Multiple flexible conductors are provided on the moving contact conductive element and connected to the terminal block. The moving contact conductive element shares the conductive work of the moving spring or moving elastic steel wire, significantly reducing the number and material cost of the moving spring or moving elastic steel wire. The moving contact conductive element is made of pure copper with good conductivity and heat dissipation. Depending on the heat dissipation requirements, it can be partially or fully surrounded to increase the heat dissipation area. The moving contact conductive element is then connected to the terminal block through multiple flexible conductors, greatly improving the switch's current carrying capacity and heat dissipation, effectively enhancing the switch's electrical load capacity.

[0006] In some embodiments, one end of the movable spring or movable elastic wire is disposed on the contact support, and the other end is provided with a movable contact and / or a flexible connecting conductor.

[0007] In the above embodiments, one end of the moving spring or the moving elastic steel wire is fixedly connected to the contact support, and the other end is provided with a moving contact. The moving contact is made of copper or silver alloy to ensure contact reliability and resistance to electrical corrosion. A flexible conductor can also be welded to the back of the moving contact to connect it to the terminal block to realize the conduction of electricity.

[0008] In some embodiments, the elongated, fully enclosed, or partially enclosed moving contact conductive element is disposed at the upper, middle, and / or lower part of the contact support, or is fully or partially enclosed.

[0009] In the above embodiments, the moving contact conductive element is elongated, fully enclosed, or partially enclosed, and is disposed on the upper, middle, and / or lower part of the contact support, or surrounding the contact support and the moving spring or moving elastic steel wire. The shape of the moving contact conductive element, whether it is elongated or enclosed, or the extent of enclosure, can be set according to the rated current of the switch. A full enclosure can be used for a larger rated current, while a semi-enclosed or elongated shape can be used for a smaller rated current. The more enclosed the element, the better the heat dissipation, the more positions there are for the flexible connection conductor, and the stronger the current carrying capacity.

[0010] In some embodiments, the contact support is provided with a driven portion and a fulcrum portion.

[0011] In the above embodiments, the contact support serves as a support for the moving contact assembly and needs to support the entire moving contact assembly to perform electrical switching movements within the insulating shell. The movement can take various forms, such as rotation, translation, or swinging. If rotation is used, a fulcrum needs to be provided on the contact support, and the fulcrum rotates in conjunction with the insulating shell. The contact support also has a driven part as the output interface of the electrical drive system, which controls the switching on and off functions.

[0012] In some embodiments, the driven part has a hole, the fulcrum part has a hole, and the two holes are arranged one in front of the other.

[0013] In some embodiments, a shaft is provided in both holes.

[0014] In some embodiments, the shaft passing through the drive section hole is a connecting rod, which is driven directly or indirectly by an electric drive system.

[0015] In some embodiments, the fulcrum shaft disposed within the fulcrum hole is disposed within the insulating housing.

[0016] In some embodiments, a stationary contact on a stationary contact head is provided below the moving contact.

[0017] In some embodiments, the moving contact assembly rotates around a pivot axis to perform electrical opening and closing movements with the stationary contact.

[0018] In the above embodiments, both the driven part and the fulcrum part on the contact support adopt a shaft-hole mating structure. The contact support is provided with holes for the driven part and holes for the fulcrum part. The two holes are arranged front and back and maintain a certain distance. A shaft is installed in the two holes. The fulcrum part uses a through shaft to support the contact support in the insulating shell. The straight part of the driven part, which adopts a linkage structure, is inserted into the hole of the driven part as the output interface of the electric drive system. Under the control of the electric drive system, the moving contact assembly rotates around the fulcrum part, causing the moving contact to contact or separate from the stationary contact on the stationary contact, thereby realizing the switching on and off functions.

[0019] In some embodiments, the moving contact passes through the middle of two layers of moving contact conductive elements, holding a moving spring or moving elastic steel wire together by welding or riveting.

[0020] In the above embodiments, the moving contact is riveted or welded, penetrating through the two layers of moving contact conductive elements, with a moving spring or moving elastic steel wire sandwiched in between. The three are firmly fixed together. The moving contact performs the contact and conduction functions, the moving contact conductive elements perform the conduction function, and the moving spring or moving elastic steel wire serves as a support and elastic pressure output function, so that the moving contact can reliably press against the stationary contact or quickly separate from the stationary contact, realizing the switching on and off functions of the switch.

[0021] In some embodiments, the electric drive system is any one or any combination of more of the following: a motor gear drive assembly, a motor gear rack drive assembly, a motor gear lead screw drive assembly, a motor gear cam drive assembly, and an electromagnet drive assembly.

[0022] In the above embodiments, there are many ways to implement the electric drive system. It can be implemented by using a motor and gear drive, a motor and gear rack drive, a motor and gear screw drive, a motor and gear cam drive, or an electromagnet drive, etc. All of these methods can achieve the switching on and off operations.

[0023] In some embodiments, the motor gear drive assembly includes at least: an electric motor, a gear and / or a worm gear.

[0024] In some embodiments, the shaft is a linkage structure, which connects the driven part and the gear or turbine to drive the moving contact assembly to perform electrical opening and closing operations.

[0025] In the above embodiments, when a motor and gear drive are used, an electric motor and gear are used for driving, or a worm gear is used to change the rotational speed and torque of the electric motor and output it to the connecting rod to make swing motion. One end of the connecting rod is connected to the gear or worm gear, and the other end is engaged with the contact support shaft hole to drive the moving contact assembly to rotate around the fulcrum, so as to realize the contact and separation of the moving contact and the stationary contact.

[0026] In some embodiments, a portion of the terminal block is disposed inside the insulating housing, and a portion is disposed outside the insulating housing.

[0027] In the above embodiment, part of the terminal block is disposed inside the insulating shell and another part is disposed outside the insulating shell. The part disposed outside has a large contact area with the outside air. The terminal block conducts most of the heat inside the switch to the outside of the insulating shell for heat dissipation, thereby effectively reducing the temperature rise of the switch.

[0028] In some embodiments, an alloy shunt is provided in the middle of the terminal block.

[0029] In the above embodiment, an alloy shunt is set in the middle of the terminal block. The shunt is made of copper alloy and its resistance characteristics are different from those of the terminal block. When the switch is energized, a voltage drop will be generated across the shunt. The resistance of the shunt remains unchanged, and the magnitude of the voltage drop is proportional to the magnitude of the current. The shunt is used to monitor the current of the switch and, in conjunction with the electric drive system, to control the timing of the switch's turn-off.

[0030] In some embodiments, the flexible connecting conductor disposed on the moving contact and / or the moving contact conductive element is connected to a terminal block disposed outside the insulating housing.

[0031] In the above embodiments, the flexible connecting conductor welded to the back of the moving contact and the conductive part of the moving contact can be welded to the terminal block not only inside the insulating housing, but also to the terminal block outside the insulating housing. This arrangement reduces the current carrying capacity of the terminal block inside the insulating housing, effectively reducing the internal temperature rise of the switch. Since the flexible connecting conductor is led out to the outside of the insulating housing and connected to the terminal block, the air circulation outside the insulating housing is good. In addition, the flexible connecting conductor is made of multiple fine copper wires and has a certain degree of fluffiness. The exposed part of the flexible connecting conductor has a good heat dissipation effect. The current flows through the terminal block outside the insulating housing through the flexible connecting conductor. Its heat point is on the outside, which makes the heat dissipation efficiency of the terminal block itself very high. In this way, the rated current can be higher and the temperature rise lower within the limited volume of the switch.

[0032] The beneficial effects of this invention are as follows:

[0033] 1. The traditional switch's moving spring, which also carries electricity, is changed to a structure where a moving spring or a moving elastic steel wire surrounds the moving contact conductive element. The moving contact conductive element does not need to participate in elastic deformation and can be made of pure copper, which has good conductivity. The moving spring or the moving elastic steel wire does not need to participate in conduction and can be made of steel sheet or wire, which is less expensive. This makes the structure simpler and easier to process compared to the traditional multi-layer copper alloy moving spring or moving elastic steel wire. Multiple flexible conductors can be set on the moving contact conductive element to connect to the terminal block. The number of flexible conductors and the thickness of the moving contact conductive element can be increased or decreased according to the rated current of the switch, resulting in a small size and high capacity.

[0034] 2. The contact support can be made of insulating or metal parts. Insulating parts are simple and efficient to manufacture, while metal parts have high strength, good high-temperature performance, and fast heat conduction and dissipation, which can effectively reduce the temperature rise of the product.

[0035] 3. This invention adopts a moving contact conductive component with a surrounding fully enclosed or semi-enclosed structure. The conductive component is made of pure copper material with good conductivity and thermal conductivity. Moving contacts and several flexible connecting conductors are set on the conductive component. Compared with the existing structure of moving springs or moving elastic steel wires with elastic copper alloy material, its conductivity and heat dissipation are greatly improved. It can carry higher current in the existing volume and effectively reduce the temperature rise of the switch.

[0036] 4. In addition, the present invention also sets part of the terminal block inside the insulating housing and part of it outside the insulating housing. An alloy shunt is also provided in the middle of the terminal block outside the insulating housing for the acquisition of electrical signals. The flexible conductor is led out to the outside of the housing and connected to the terminal block to further improve the heat dissipation efficiency of the switch, making the temperature rise of the switch lower and effectively improving the electrical load capacity of the switch. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0038] Figure 1 This is a schematic diagram of the switch structure according to the first embodiment of the present invention;

[0039] Figure 2 This is a schematic diagram of the switch structure according to the second embodiment of the present invention;

[0040] Figure 3 and Figure 4 This is a schematic diagram of the switch structure according to the third embodiment of the present invention;

[0041] Figure 5 This is a schematic diagram of the drive system and moving contact assembly in this invention;

[0042] Figure 6 This is a schematic diagram showing the connection between the flexible conductor and the external connecting plate of the insulating shell in this invention;

[0043] Figure 7 This is a schematic diagram of the structure connecting the moving spring and the contact support.

[0044] Figure 8 This is a schematic diagram of the structure of the fourth embodiment of the present invention, showing the moving spring and the contact support being integrally configured;

[0045] Figures 9 to 11 A schematic diagram of a structure consisting of a single steel wire for contact support and dynamic elasticity. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of the embodiments of this invention will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of this invention. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this invention, and should not be construed as limiting the invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0047] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0048] First embodiment:

[0049] Please refer to Figure 1 This application provides a switch, which includes at least an insulating housing 100 and internal components. The internal components include at least a moving contact assembly 200, a stationary contact 300, a terminal block 400, an electric drive system, and a flexible conductor 600. The moving contact assembly 200 includes at least a moving spring or moving elastic steel wire 210, a contact support 220, and a moving contact conductive element 230. The stationary contact 300 is provided with a stationary contact point 310. In this embodiment, the moving spring 210 is a long strip-shaped sheet, with one end (the first end) connected to the contact support 220. A fixed connection is made, and the connection method can be set according to the material of the contact support 220. Welding, riveting, hot melting and other processes can be used to make the entire moving contact assembly 200 a whole. A moving contact 240 is provided on the other end (second end). The moving contact 240 is arranged vertically and vertically corresponding to the position of the stationary contact 310. The moving contact conductive element 230 is arranged in a closed shape around the periphery of the moving spring 210 and the contact support 220, that is, the moving contact conductive element 230 is fully surrounded. The moving contact conductive element 230 is fixedly set with the moving spring 210.

[0050] In this embodiment, one end of the moving contact conductive element 230 is fixed at the edge of the second end of the moving spring 210. It extends towards the first end of the moving spring 210 and bends upward around the contact support 220 once before bending back and continuing to extend towards the first end of the moving spring 210. After wrapping around the moving spring 210 once, it overlaps and is fixed. The moving contact 240 passes through the second end of the moving spring 210 and the moving contact conductive element 230 located on the upper and lower sides of the moving spring 210 and is fixed by welding or riveting, so that the moving contact 240, the moving spring 210 and the moving contact conductive element 230 are firmly fixed together. The moving contact 240 is made of copper or silver alloy to ensure contact reliability and resistance to electrical corrosion. The moving contact 240 has both contact and conductivity functions. The moving contact conductive element 230 has conductivity function, and the moving spring 210 has support and elastic pressure output function, so that the moving contact 240 can reliably press against the stationary contact 310 when closed or quickly separate from the stationary contact 310 when separated, realizing the switching on and off functions of the switch.

[0051] It should be noted that the moving spring can also be replaced by a dynamic elastic steel wire, which has a better yield strength.

[0052] The upper surface of the moving contact conductive component 230 is connected to a plurality of flexible connecting conductors 600. In this embodiment, three flexible connecting conductors 600 are provided. One of the connecting conductors 600 is welded to the back of the moving contact 240, and the other end of the flexible connecting conductor 600 is connected to the terminal block 400.

[0053] The contact support 220 is provided with a driven part 221 and a fulcrum part. The contact support 220 serves as a support for the moving contact assembly 200 and needs to support the entire moving contact assembly 200 to perform electrical switching movements within the insulating shell 100. The movement mode is rotational movement, but other movement modes are also possible, such as rotation, translation, swinging, etc. When using rotation, a fulcrum part needs to be set on the contact support 220. The fulcrum part rotates with the insulating shell 100. The contact support 220 is also provided with a driven part 221 as an output interface of the electrical drive system. The electrically driven system controls the switching on and off functions.

[0054] Specifically, the driven part 221 and the fulcrum part are both holes, arranged front to back. A shaft is installed in each hole. The shaft passing through the hole of the driven part 221 is a connecting rod 700. The connecting rod 700 is connected between the electric drive system and the driven part 221, and is driven directly or indirectly by the electric drive system. The fulcrum shaft 800 installed in the hole of the fulcrum part is housed within the insulating shell 100. The moving contact assembly 200 rotates around the fulcrum shaft 800, performing electrical opening and closing movements with the stationary contact 300. The driven part 221 and the fulcrum part on the contact support 220... Both adopt a shaft-hole mating structure. The contact support 220 has a hole for the driven part 221 and a hole for the fulcrum part. The two holes are arranged front and back and maintain a certain distance. A shaft is installed in the two holes. The fulcrum part uses a metal through shaft to support the contact support 220 in the insulating shell 100. The straight part of the driven part 221, which adopts a connecting rod 700 structure, is inserted into the hole of the driven part 221 as the output interface of the electric drive system. Under the control of the electric drive system, the moving contact assembly 200 rotates around the fulcrum part, causing the moving contact 240 to contact or separate from the stationary contact 310 on the stationary contact 300, so as to realize the switching function of connecting and disconnecting the power.

[0055] The contact support 220 is made of insulating or metallic materials. That is, the contact support 220 is made of insulating or metallic parts. Metallic parts have high strength and high heat resistance or heat dissipation, which are suitable for high current switches. Insulating parts can be made of materials such as plastic and ceramics. Plastics are easy to process and have high production efficiency, but their high temperature resistance is slightly poor. They can be used in small-sized switches. Ceramics have higher costs, but their temperature resistance is very high. The specific material selection can be flexibly chosen according to the actual application scenario.

[0056] The moving contact conductive element 230 is made of pure copper, which has good conductivity and heat dissipation. It is designed as a fully enclosed structure to increase the heat dissipation area and conductive cross section according to the heat dissipation requirements. The moving contact conductive element 230 is then connected to the terminal block 400 through three flexible connecting conductors 600, which greatly improves the current carrying capacity of the switch and also has good heat dissipation, effectively improving the electrical load capacity of the switch.

[0057] Second embodiment:

[0058] like Figure 2As shown, this application provides a switch according to a second specific embodiment. The difference between the second and third embodiments is that the moving contact conductive element 230 is arranged in an open shape around the periphery of the moving spring 210 and the contact support 220. That is, the moving contact conductive element 230 is partially enclosed. One end of the moving contact conductive element 230 is fixed to the moving spring 210, one end extends to the front of the contact support 220, and the other end extends to the bottom of the contact support 220. One of the three flexible connecting conductors 600 is connected to the back of the moving contact 240, and the other two are respectively connected to the two ends of the moving contact conductive element 230. As a conductive part, the extent of enclosure of the moving contact conductive element 230 can be set according to the rated current of the switch. A full enclosure can be used for a larger rated current, while a semi-enclosed structure can be used for a slightly smaller rated current, which can reduce the amount of copper material used and save costs.

[0059] Third embodiment:

[0060] like Figure 3 and Figure 4 As shown, this application provides a switch according to a third specific embodiment. The difference between this and the first embodiment is that the moving contact conductive element 230 is elongated and attached to the upper or lower part of the moving spring 210. Figure 3 The movable contact conductive element 230 shown is disposed above the movable spring 210. Figure 4 The moving contact conductive element 230 shown is located below the moving spring 210. A flexible connecting conductor 600 is welded between the back of the moving contact 240 and the extension conductor 420 of the terminal block 400. A flexible connecting conductor 600 is welded between the end of the moving contact conductive element 230 and the terminal block 400. The number and cross-sectional area of ​​the flexible connecting conductor 600 are related to the rated current. The larger the rated current, the more flexible connecting conductors 600 there are and the thicker the cross-sectional area.

[0061] like Figure 5As shown, in some embodiments, the electric drive system is a motor-gear drive assembly, which includes at least: an electric motor 510, a gear 520 and / or a worm gear 540, and a worm 530. A connecting rod 700 is connected between the driven part 221 and the gear 520, driving the moving contact assembly 200 to perform electric opening and closing movements. There are many implementations of the electric drive system, including a motor-gear drive, a motor-rack and pinion drive, a motor-screw drive, or a motor-cam drive. The switching operation can be achieved by means of various methods, such as using an electromagnet or other drive mechanisms. When using a motor and gear drive, an electric motor 510 and a gear 520 are used for driving, or a worm gear 540 and a worm 530 are used to change the rotational speed and torque of the electric motor 510 and output it to the connecting rod 700 to make an oscillating motion. One end of the connecting rod 700 is connected to the gear 520 or the worm gear 540, and the other end is connected to the driven part 221 of the contact support 220, which pushes the moving contact assembly 200 to rotate around the fulcrum, so as to realize the contact and separation of the moving contact 240 and the stationary contact 300.

[0062] like Figure 6 As shown, in some embodiments, a portion of the terminal block 400 is disposed inside the insulating housing 100, and another portion is disposed outside the insulating housing 100. The portion disposed outside has a large contact area with the outside air. The terminal block 400 conducts most of the heat inside the switch to the outside of the insulating housing 100 for heat dissipation, effectively reducing the temperature rise of the switch. An alloy shunt 410 is disposed in the middle of the terminal block 400. The shunt is made of copper alloy, and its resistance characteristics differ from those of the terminal block 400. When the switch is energized, a voltage drop occurs across the shunt. The shunt resistance remains constant, and the magnitude of the voltage drop is proportional to the magnitude of the current. The voltage change across the alloy shunt 410 is used to monitor the current of the switch, and the electrical drive system 500 is used to control the timing of the switch's shutdown.

[0063] In some embodiments, the flexible connecting conductor 600 disposed on the moving contact 240 and the moving contact conductive element 230 is connected to the terminal block 400 disposed outside the insulating housing 100. The connection position between the flexible connecting conductor 600 soldered on the back of the moving contact 240 and the moving contact conductive element 230 and the terminal block 400 can be soldered not only inside the insulating housing 100, but also to the terminal block 400 outside the insulating housing 100. This arrangement reduces the current carrying capacity of the terminal block 400 inside the insulating housing 100, effectively reducing the internal temperature of the switch. The rated current can be increased and the temperature rise can be reduced because the flexible conductor 600 is led out to the outside of the insulating shell 100 and connected to the terminal block 400. The air circulation outside the insulating shell 100 is good, and the flexible conductor 600 is made of multiple fine copper wires and has a certain degree of fluffiness. The exposed part of the flexible conductor 600 has a good heat dissipation effect. The current flows through the terminal block 400 outside the insulating shell 100 through the flexible conductor 600. Its heat point is on the outside, and the terminal block 400 itself has a high heat dissipation efficiency. In this way, the rated current can be higher and the temperature rise can be lower within the limited volume of the switch.

[0064] like Figure 7 As shown, the movable spring 210 and the contact support 220 are riveted together. The contact support 220 is provided with a driven part 221 and a fulcrum part 222. The fulcrum part 222 is rotatably engaged with the insulating shell 100. The driven part 221 on the contact support 220 serves as the output interface of the electric drive system. The electric drive system controls the switching on and off functions.

[0065] Fourth embodiment:

[0066] like Figure 8As shown, this application also provides a switch structure according to another specific embodiment. Unlike the first embodiment, the contact support 220 and the movable spring 210 are integrated. A long strip-shaped plate structure extending along the Y-axis forms the movable spring 210. The movable spring 210 extends along the X-axis with a perforated ear-shaped structure to form the contact support. In this embodiment, the perforated ear-shaped structure extending approximately from the middle of the movable spring 210 along the X-axis is the driven part 221, and the perforated ear-shaped structure extending from the rear end along the X-axis is the fulcrum part 222. The holes on the driven part 221 and the fulcrum part 222 extend along the Z-axis. This design simplifies the manufacturing process and significantly reduces material and manufacturing costs. The contact support 220 is provided with a driven part 221 and a fulcrum part 222. The contact support 220 serves as a support for the moving contact assembly 200 and needs to support the entire moving contact assembly 200 to perform electrical switching movements within the insulating shell 100. The movement mode is rotational movement, but other movement modes are also possible, such as rotation, translation, swinging, etc. When using rotation, a fulcrum part 222 needs to be set on the contact support 220. The fulcrum part 222 rotates with the insulating shell 100. The contact support 220 is also provided with a driven part 221 as an output interface of the electrical drive system. The electrically driven system controls the switching on and off functions.

[0067] like Figure 9 As shown, in other embodiments, the contact support 220 can also be integrated with the dynamic elastic steel wire 210. The dynamic elastic steel wire 210 and the contact support 220 are formed by a single steel wire. The loop structure wound at one end of the steel wire forms the fulcrum 222, and the loop structure wound in the middle forms the driven part 221. The steel wire is generally straight. The contact support and dynamic elastic steel wire structure formed by the steel wire are simple to manufacture, and the material and manufacturing costs are greatly reduced. Figure 10 The contact support and dynamic elastic wire structure shown are... Figure 9 The difference is that the steel wire is bent to form two sections of first steel wire and second steel wire with acute angles. The end of the first steel wire is wrapped with a ring structure to form a fulcrum 222, and the end of the second steel wire is wrapped with a ring structure to form a driven section 221. Figure 11 The contact support and dynamic elastic wire structure shown are... Figure 9 Similarly, the difference is that the other end does not have a loop structure.

[0068] This invention may be implemented in other specific forms without departing from its spirit and essential characteristics. The present embodiments are to be regarded in all respects as exemplary rather than limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description, and all modifications falling within the meaning of the claims and their equivalents are thus included within the scope of the invention.

Claims

1. A switch comprising at least an insulating housing and internal components, said internal components including at least a moving contact assembly, a stationary contact, a terminal block, an electrical drive system, and a flexible connecting conductor. The moving contact assembly includes at least a moving spring or moving elastic steel wire, a contact support, and a moving contact conductive component. The contact support may be made of insulating material or metallic material, or the contact support may be integrally formed from a moving spring or a moving elastic steel wire. The moving contact conductive element is elongated, fully enclosed, or partially enclosed. The moving contact conductive element is fixedly installed with the moving spring or the moving elastic steel wire, and is located above or below the moving spring or the moving elastic steel wire, or is fully or partially surrounded by it. Its features are: The flexible connecting conductor is disposed at least at one location on the moving contact conductive element, and the flexible connecting conductor disposed on the moving contact conductive element is connected to the terminal block.

2. A switch according to claim 1, characterized in that, One end of the moving spring or the moving elastic steel wire is provided on the contact support, and the other end is provided with a moving contact and / or a flexible connecting conductor.

3. A switch according to claim 1, characterized in that, The moving contact conductive element is partially or fully surrounded by the upper, middle, and / or lower part of the contact support.

4. A switch according to claim 1, characterized in that, The contact support is provided with a driven part and a fulcrum part.

5. A switch according to claim 4, characterized in that, The driven part has a hole structure, the fulcrum part has a hole structure, and the two holes are arranged one in front of the other.

6. A switch according to claim 5, characterized in that, A shaft is installed in both holes.

7. A switch according to claim 5 or 6, characterized in that, The shaft passing through the hole in the driven part is a connecting rod, which is driven directly or indirectly by an electric drive system.

8. A switch according to claim 5 or 6, characterized in that, The shaft installed inside the hole of the fulcrum is a fulcrum shaft, and the fulcrum shaft is installed inside the insulating shell.

9. A switch according to claim 2, characterized in that, The stationary contact on the stationary head is provided below the moving contact.

10. A switch according to claim 8, characterized in that, The moving contact assembly rotates around the pivot axis, and performs electrical opening and closing movements with the stationary contact.

11. A switch according to claim 2, characterized in that, The moving contact passes through the middle of two layers of moving contact conductive parts, holding a moving spring or moving elastic steel wire together by welding or riveting.

12. A switch according to claim 7, characterized in that, The electric drive system is any one or any combination of more of the following: motor gear drive assembly, motor gear rack drive assembly, motor gear lead screw drive assembly, motor gear cam drive assembly, and electromagnet drive assembly.

13. A switch according to claim 12, characterized in that, The motor gear drive assembly includes at least an electric motor, gears and / or a worm gear.

14. A switch according to claim 13, characterized in that, The shaft is a linkage structure, which connects the driven part and the gear or turbine to drive the moving contact assembly to perform electrical opening and closing operations.

15. A switch according to claim 1, characterized in that, Part of the terminal block is located inside the insulating housing, and part of it is located outside the insulating housing.

16. A switch according to claim 1, characterized in that, An alloy shunt is provided in the middle of the terminal block.

17. A switch according to claim 2, characterized in that, The flexible connecting conductor disposed on the moving contact and / or the moving contact conductive element is connected to the terminal block disposed outside the insulating housing.

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