High speed mechanical switch with dual contact rotationally separated

Abstract

The utility model provides a high -speed mechanical switch of double contact head rotary separation, including shell, repulsion assembly, two static contacts, opening coil and closing coil, repulsion assembly includes two moving contacts, and opening coil and closing coil form the angle setting, and the two rotation space is formed between opening coil and closing coil, and two moving contacts are rotatoryly arranged in two rotation space respectively, the utility model discloses a high -speed mechanical switch of double contact head rotary separation, and two moving contacts are rotatoryly arranged in two rotation space formed by the angle setting of opening coil and closing coil respectively, and two moving contacts are driven by the same opening coil and separate with corresponding static contact, and two moving contacts are driven by the same closing coil and contact with corresponding static contact, and moving contact and opening coil and closing coil reasonable layout can realize faster opening speed and greater opening distance when opening, improve the breaking performance of high -speed mechanical switch, and two moving contacts share the same opening coil and the same closing coil, reduce parts.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage electrical appliances, specifically to a high-speed mechanical switch with dual-contact rotary separation. Background Technology

[0002] With the rapid development of new energy vehicles, energy storage centers, and smart homes, DC power distribution systems have become a new direction for the development of power systems. However, since DC arcs do not have a natural zero-crossing point, the DC arcs generated by the switching of lines are extremely difficult to extinguish. Solid-state circuit breakers rely on power electronics to solve the above problems, but pure solid-state circuit breakers have problems such as high losses, the need for cooling devices, and high costs.

[0003] Hybrid solid-state circuit breakers were developed to address the issues of high losses, the need for cooling devices, and high costs associated with pure solid-state circuit breakers. Hybrid solid-state circuit breakers integrate mechanical switches and power semiconductors, achieving the low conduction losses of mechanical switches while retaining the fast actuation advantages of power semiconductors. A hybrid solid-state circuit breaker consists of mechanical switches and power semiconductors connected in parallel. When the circuit breaker closes, the power semiconductor connects first, followed by the mechanical switch. When a fault current is encountered, the mechanical switch opens first, followed by the power semiconductor. Zero arcing occurs during the opening and closing processes of the mechanical switch. Therefore, the opening time and opening distance of the mechanical switch directly affect the size and cost of the power semiconductor.

[0004] The mechanical switches in existing hybrid solid-state circuit breakers use an electric repulsion scheme to accelerate the opening speed. These schemes mostly employ a linear movement of the moving contact, which has problems such as slow opening speed, small opening distance, and limited layout options. Utility Model Content

[0005] The purpose of this invention is to overcome at least one defect of the prior art and provide a high-speed mechanical switch with dual-contact rotational separation.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A high-speed mechanical switch with dual-contact rotary separation includes a housing, a repulsion assembly disposed within the housing, two stationary contacts, a tripping coil, and a closing coil. The repulsion assembly includes two moving contacts corresponding to the two stationary contacts, which are electrically connected. The tripping coil and the closing coil are arranged at an angle, forming two rotational spaces between them. The two moving contacts are rotatably disposed within the two rotational spaces. The tripping coil drives the two moving contacts to rotate from the closed position to the tripping position within the two rotational spaces, separating them from the corresponding stationary contacts. The closing coil drives the two moving contacts to rotate from the tripping position to the closing position within the two rotational spaces, making contact with the corresponding stationary contacts.

[0008] Optionally, the tripping coil is located between the two stationary contacts in the first direction, and the closing coil is located below the tripping coil and the two stationary contacts in the second direction, such that the two rotation spaces are located on both sides of the closing coil in the first direction and below the tripping coil and the two stationary contacts in the second direction. The rotation center of the moving contact is set along a third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0009] Optionally, the rotation centers of the two moving contacts are set parallel to each other.

[0010] Optionally, it includes at least two elastic elements corresponding to the two moving contacts respectively; when the opening coil drives the two moving contacts to rotate from the closed position to the opening position respectively, the two moving contacts drive the corresponding elastic elements to store energy; the two moving contacts rotate from the opening position to the closed position under the joint drive of the closing coil and the corresponding elastic elements respectively.

[0011] Optionally, the two elastic elements are the same elastic element, which is a shared elastic element, and the two ends of the shared elastic element are respectively connected to two moving contacts.

[0012] Optionally, the rotation centers of the two moving contacts are arranged parallel to each other; the common elastic element is a torsion spring, including two torsion spring bodies, which are respectively coaxially arranged with the rotation centers of the two moving contacts and located on the same side of the rotation center direction of the two moving contacts. One end of the two torsion spring bodies is integrally connected, and the other end of the two torsion spring bodies is an elastic arm, which is respectively connected to the two moving contacts.

[0013] Optionally, it includes at least two elastic limiting structures corresponding to the two moving contacts respectively, used to limit the two moving contacts in the open position, and the moving contacts can release the elastic limiting structure from limiting the moving contacts when they are subjected to the repulsive force of the closing coil.

[0014] Optionally, the two elastic limiting structures are two elastic limiting members, each of which has a moving contact limiting part. When the two moving contacts rotate from the closed position to the open position, they first drive the corresponding elastic limiting members to store energy by acting on the moving contact limiting parts. Then, the two elastic limiting members release energy to drive their moving contact limiting parts to cooperate with the corresponding moving contact limiting parts, thereby limiting the corresponding moving contacts to the open position and preventing them from rotating to the closed position. The two elastic limiting members are the same elastic limiting member, which is a shared elastic limiting member with two moving contact limiting parts.

[0015] Optionally, the common elastic limiting member is located on the side of the closing coil away from the opening coil. The middle part of the common elastic limiting member is fixed on the outer shell. The two ends of the common elastic limiting member are respectively provided with two boss structures as the two moving contact limiting parts, protruding towards the closing coil.

[0016] Optionally, each of the two moving contacts includes a contact portion, the contact portion having a moving contact point, and the end of the contact portion having a driving inclined surface and a mating inclined surface; the moving contact limiting portion has a driven inclined surface and a limiting inclined surface, the driven inclined surface being located on the trajectory of the driving inclined surface rotating from the closed position to the open position, and the limiting inclined surface being located on the trajectory of the mating inclined surface rotating from the open position to the closed position.

[0017] Optionally, both the opening coil and the closing coil are disc-shaped structures, and the opening coil and the closing coil are perpendicular to each other.

[0018] Optionally, the repulsion assembly further includes two insulating shells, with at least a portion of the two moving contacts respectively installed inside the two insulating shells. The two opposing surfaces of the insulating shells are a first buffer plane and a second buffer plane. When the moving contact is in the closed position, the first buffer plane of the insulating shell faces the opening coil, and when the moving contact is in the open position, the second buffer plane of the insulating shell faces the closing coil.

[0019] Optionally, the two moving contacts each include a moving contact body and a contact portion. The moving contact body has a semi-disc structure, and the contact portion is provided on the arc edge of the moving contact body. The contact portion is provided with a moving contact point.

[0020] Optionally, the housing is provided with a first receiving cavity and a second receiving cavity, and the opening coil and the closing coil are respectively installed in the first receiving cavity and the second receiving cavity.

[0021] Optionally, the tripping coil is located between the two stationary contacts in the first direction or above the two stationary contacts in the second direction, and the closing coil is located above the tripping coil in the second direction, such that the two rotation spaces are located on both sides of the tripping coil in the first direction and below the closing coil in the second direction. The rotation center of the moving contact is set along a third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0022] This invention relates to a high-speed mechanical switch with dual-contact rotary separation. Two moving contacts are rotatably positioned within two rotational spaces formed by an angled arrangement of a tripping coil and a closing coil. Both moving contacts are driven by the same tripping coil to separate from their corresponding stationary contacts, and are also driven by the same closing coil to contact their corresponding stationary contacts. This rational arrangement of the moving contacts with the tripping and closing coils enables faster tripping speeds and larger opening distances during tripping, improving the breaking performance of the high-speed mechanical switch. Furthermore, the shared use of the same tripping and closing coils by both moving contacts reduces the number of parts and simplifies the structure.

[0023] In addition, the two moving contacts rotate in two rotation spaces on both sides of the closing coil, and the two stationary contacts are arranged separately on both sides of the opening coil. The layout is compact and reasonable. The wall of the first receiving cavity used to accommodate the opening coil also provides electrical isolation for the two stationary contacts, and the wall of the second receiving cavity used to accommodate the closing coil also provides electrical isolation for the two moving contacts, thus improving the electrical isolation effect.

[0024] In addition, the elastic limit component relies on its own elasticity to store energy and then release energy during the opening rotation of the moving contact, thereby completing the automatic locking of the moving contact opening. The locking structure is simple and reliable, effectively avoiding accidental closing and improving safety. Attached Figure Description

[0025] Figure 1 This is an assembly drawing of the high-speed mechanical switch of this utility model;

[0026] Figure 2 This is an exploded view of the high-speed mechanical switch of this utility model;

[0027] Figure 3 This is a schematic diagram of the current circuit when the circuit is closed according to this utility model;

[0028] Figure 4 This is a schematic diagram of the force on the moving contact when a tripping command is given under the closed state of this utility model;

[0029] Figure 5 This is a schematic diagram of the force on the moving contact when a closing command is given in the open state of this utility model;

[0030] Figure 6 This is a structural schematic diagram of the moving contact and conductive connector of this utility model;

[0031] Figure 7 This is a schematic diagram of the structure of the first half-shell of this utility model;

[0032] Figure 8 This is a schematic diagram of the structure of the second half-shell of this utility model;

[0033] Figure 9 This is a structural schematic diagram of the shared elastic element of this utility model;

[0034] Figure 10 This is a schematic diagram of the structure of the common elastic limiting component of this utility model;

[0035] Figure 11 This is a schematic diagram of the structure and deformation under stress of the shared elastic limiting component of this utility model.

[0036] Outer shell 100; First receiving cavity 101; Second receiving cavity 102; First half-shell 110; First trip coil limiting part 111; First closing coil limiting part 112; First rotating hole 113; First support platform 114; Fixed platform 115; First fixed hole 116; Second half-shell 120; Second trip coil limiting part 121; Second closing coil limiting part 122; Second rotating hole 123; Second support platform 124; Positioning notch 125; Insulating shell 200; Rotating part 201; Clearance hole 202; First buffer plane 203; Second buffer plane 204; Moving contact 300; Moving contact body 301; Contact part 302; Moving contact 303; Driving inclined surface 304; Mating inclined surface 305; Conductive connecting part 310; Common elastic element 400; Torsion spring body 401; Elastic arm 402; Stationary contact 500; Wiring part 501; Stationary contact 502; Opening coil 600; Closing coil 700; Common elastic limiting element 800; Moving contact limiting part 801; Driven inclined surface 802; Limiting inclined surface 803; Second fixing hole 804; Fixing screw 900. Detailed Implementation

[0037] The following embodiments, in conjunction with the accompanying drawings, further illustrate the specific implementation of the high-speed mechanical switch with dual-contact rotary separation according to this invention. The high-speed mechanical switch with dual-contact rotary separation of this invention is not limited to the descriptions in the following embodiments.

[0038] like Figure 1-3 As shown, the high-speed mechanical switch with dual-contact rotary separation in this embodiment is suitable for use in hybrid solid-state circuit breakers, and can also be used in other applications requiring rapid opening and closing. The high-speed mechanical switch includes a housing 100, a repulsion assembly disposed within the housing 100, two stationary contacts 500, an opening coil 600, and a closing coil 700. The two stationary contacts 500 serve as the input and output terminals, respectively. The repulsion assembly includes two rotatably disposed moving contacts 300, each corresponding to one of the two stationary contacts 500, and the two moving contacts 300 are electrically connected.

[0039] Specifically, the opening coil 600 and the closing coil 700 are arranged at an angle, forming two rotational spaces between them. Two moving contacts 300 are respectively rotatably disposed within these two rotational spaces. The opening coil 600 drives the two moving contacts 300 to rotate within the two rotational spaces in a direction closer to the closing coil 700 and further away from the opening coil 600, thus enabling the two moving contacts 300 to rotate from the closed position to the opening position, separating from their corresponding stationary contacts 500. The closing coil 700 drives the two moving contacts 300 to rotate within the two rotational spaces in a direction closer to the opening coil 600 and further away from the closing coil 700, thus enabling the two moving contacts 300 to rotate from the opening position to the closing position, making contact with their corresponding stationary contacts 500.

[0040] In this embodiment, a high-speed mechanical switch with dual-contact rotary separation is provided. Two moving contacts 300 are rotatably disposed within two rotational spaces formed by an angled arrangement of a tripping coil 600 and a closing coil 700. Both moving contacts 300 are driven by the same tripping coil 600 to separate from their corresponding stationary contacts 500, and are also driven by the same closing coil 700 to contact their corresponding stationary contacts 500. This rational arrangement of the moving contacts 300 with the tripping coil 600 and closing coil 700 enables faster tripping speeds and larger opening distances during tripping, improving the breaking performance of the high-speed mechanical switch. Furthermore, the shared use of the same tripping coil 600 and closing coil 700 by the two moving contacts reduces the number of parts, eliminates the need for a repulsion plate, and simplifies the structure.

[0041] like Figure 2 , 4As shown in Figure -5, the housing 100 has a first receiving cavity 101 and a second receiving cavity 102. The opening coil 600 and the closing coil 700 are respectively installed in the first receiving cavity 101 and the second receiving cavity 102. The opening coil 600 is located between the two stationary contacts 500 in the first direction, and the closing coil 700 is located below the opening coil 600 and the two stationary contacts 500 in the second direction. This makes the two rotation spaces located on both sides of the closing coil 700 in the first direction and below the opening coil 600 and the two stationary contacts 500 in the second direction. The rotation center of the moving contact 300 is set along a third direction. The first direction, the second direction, and the third direction are perpendicular to each other. The first direction X is the left-right direction (also called the horizontal direction) in the figure, the second direction Y is the up-down direction (also called the vertical direction) in the figure, and the third direction Z is the direction perpendicular to the drawing. Two moving contacts 300 rotate within two rotational spaces on either side of the closing coil 700. During closing and opening, the two moving contacts 300 rotate in opposite directions, one clockwise and the other counterclockwise. Two stationary contacts 500 are separately arranged on either side of the opening coil 600, resulting in a compact and reasonable layout. Furthermore, the wall of the first receiving cavity 101, which accommodates the opening coil 600, provides electrical isolation for the two stationary contacts 500, and the wall of the second receiving cavity 102, which accommodates the closing coil 700, provides electrical isolation for the two moving contacts 300, thus improving the electrical isolation effect. Further, the two stationary contacts 500 are symmetrically arranged and located at the same height as the opening coil 600. In other embodiments, the first receiving cavity 101 and the second receiving cavity 102 may be omitted, and the opening coil 600 and the closing coil 700 may be fixed using limiting ribs or similar methods.

[0042] Preferably, the opening coil 600 and the closing coil 700 are both made of enameled copper wire and have a disc-shaped structure. The opening coil 600 and the closing coil 700 are perpendicular to each other, i.e., the opening coil 600 is horizontally positioned and the closing coil 700 is vertically positioned. Furthermore, the centers of the opening coil 600 and the closing coil 700 are on the same straight line, i.e., the closing coil 700 is located at the center of the opening coil 600, and the two rotational spaces are symmetrically arranged.

[0043] Of course, as another embodiment, the trip coil 600 can be vertically arranged and located between the two stationary contacts 500 in the first direction or above the two stationary contacts 500 in the second direction, while the closing coil 700 is horizontally arranged and located above the trip coil 600 in the second direction, such that the two rotation spaces are located on both sides of the trip coil 600 in the first direction and below the closing coil 700 in the second direction. Furthermore, as another inferior embodiment, the trip coil 600 and the closing coil 700 may not be absolutely vertically arranged; the included angle between them can be an acute angle, such as 80 degrees.

[0044] Furthermore, the rotation centers of the two moving contacts 300 are arranged parallel to each other. The two moving contacts 300 rotate relatively independently without interfering with each other. Of course, in other embodiments, the rotation centers of the two moving contacts 300 may also be arranged to coincide.

[0045] like Figure 3 , 6 As shown, the two moving contacts 300 are electrically connected by a conductive connector 310, which is preferably a flexible structure made of copper. The repulsion assembly also includes two insulating shells 200, and the two moving contacts 300 are at least partially installed in the two insulating shells 200, that is, the insulating shells 200 rotate synchronously with the moving contacts 300 inside them. The insulating shells 200 increase the electrical clearance between the moving contacts 300 and the stationary contacts during the rotation and opening process of the moving contacts 300. The two moving contacts 300 are preferably made of copper and each includes a moving contact body 301 and a contact portion 302 extending out of the insulating shell 200. The contact portion 302 is provided with a moving contact 303, which is preferably a silver contact. The end of the contact portion 302 is provided with a driving slope 304 and a mating slope 305, which are preferably formed by chamfering the opposite corners of the end of the contact portion 302.

[0046] Specifically, in this embodiment, the moving contact body 301 is a semi-circular structure. The arc edge of the moving contact body 301 is provided with a contact portion 302. The two ends of the conductive connector 310 are respectively connected to the straight edges of the moving contact bodies 301 of the two moving contacts 300. Correspondingly, the insulating shell 200 is a semi-circular shell structure wrapped around the outer surface of the moving contact body 301. The arc edge of the insulating shell 200 is open. At the junction of the arc edge and the straight edge of the insulating shell 200, rotating portions 201 are respectively provided on both sides in the third direction, which are rotatably connected to the outer shell 100. The rotating portion 201 is a circular shaft structure. Its axis is the rotation center of the insulating shell 200, which is also the rotation center of the moving contact 300. The straight edge of the insulating shell 200 is provided with a clearance hole 202 for avoiding the conductive connector 310.

[0047] Furthermore, in this embodiment, the insulating shell 200 is made of a material with a certain degree of elasticity. The two opposing surfaces of the insulating shell 200 are a first buffer plane 203 and a second buffer plane 204. When the moving contact 300 is in the closed position, the first buffer plane 203 of the insulating shell 200 faces the opening coil 600, and when the moving contact 300 is in the open position, the second buffer plane 204 of the insulating shell 200 faces the closing coil 700. While providing insulation, the insulating shell 200 also facilitates buffer contact between the first buffer plane 203 and the outer wall of the first receiving cavity 101 used to accommodate the opening coil 600 when the circuit is closed, and between the second buffer plane 204 and the outer wall of the second receiving cavity 102 used to accommodate the closing coil 700 when the circuit is open.

[0048] like Figure 4-5 As shown, the stationary contact 500 in this embodiment is preferably made of copper and has a horizontally arranged elongated structure. One end of the stationary contact 500 is a wiring portion 501 that extends out of the housing 100 for external wiring. The other end of the stationary contact 500 located inside the housing 100 is provided with a stationary contact 502, which is arranged opposite to the moving contact 303 of the corresponding moving contact 300. The stationary contact 502 is preferably a silver contact.

[0049] like Figure 2 , 7 As shown in Figure 8, the outer shell 100 of this embodiment is made of insulating material and includes a first half shell 110 and a second half shell 120. The first half shell 110 and the second half shell 120 are connected together along a third direction. The first half shell 110 and the second half shell 120 can be connected by snap-fit, screw connection, riveting or other methods.

[0050] like Figure 7As shown, in this embodiment, the first half-shell 110 has a first tripping coil limiting part 111 and a first closing coil limiting part 112 protruding on its side wall opposite to the second half-shell 120 in the third direction. The first tripping coil limiting part 111 is horizontally arranged, and the first closing coil limiting part 112 is vertically arranged below the first tripping coil limiting part 111. Both the first tripping coil limiting part 111 and the first closing coil limiting part 112 are half-shell structures. The first half-shell 110 also has a rotating part 201 corresponding to the two insulating shells 200 on its side wall opposite to the second half-shell 120 in the third direction. Two first rotating holes 113 are located below the first trip coil limiting part 111 in the second direction and on both sides of the first closing coil limiting part 112 in the first direction; a fixed platform 115 is provided on the bottom wall of the first half shell 110, and the fixed platform 115 is provided with a first fixing hole 116; a first support platform 114 is provided on the outer side of the two side walls of the first half shell 110 in the first direction, respectively corresponding to the two stationary contacts 500, and the first support platform 114 is located at the edge of the first half shell 110 near the second half shell 120.

[0051] like Figure 2-3As shown in Figure 8, in this embodiment, the second half-shell 120 has a second tripping coil limiting part 121 and a second closing coil limiting part 122 protruding on the side wall opposite to the first half-shell 110 in the third direction. The second tripping coil limiting part 121 is horizontally arranged, and the second closing coil limiting part 122 is vertically arranged below the second tripping coil limiting part 121. Both the second tripping coil limiting part 121 and the second closing coil limiting part 122 are half-shell structures. The first tripping coil limiting part 111 and the second tripping coil limiting part 121 enclose and form the first receiving cavity 101. That is, the first trip coil limiting part 111 and the second trip coil limiting part 121 serve as the walls of the first receiving cavity 101, and the first closing coil limiting part 112 and the second closing coil limiting part 122 enclose and form the second receiving cavity 102, which serves as the walls of the second receiving cavity 102; the second half-shell 120 is also provided with two second rotating holes 123 on the side wall opposite to the first half-shell 110 in the third direction, corresponding to the rotating parts 201 of the two insulating shells 200. Located below the second trip coil limiting part 121 in the second direction and on both sides of the second closing coil limiting part 122 in the first direction, the rotating parts 201 of the two insulating shells 200 on the third-direction upward side are respectively rotatably connected to the two first rotating holes 113 of the first half shell 110, and the rotating parts 201 of the two insulating shells 200 on the other side of the third-direction upward side are respectively rotatably connected to the two second rotating holes 123 of the second half shell 120; the bottom wall side of the second half shell 120 is provided with a positioning notch 125 corresponding to the fixed platform 115, and the fixed platform 115 protrudes from... The bottom wall of the first half-shell 110 is inserted into the positioning notch 125. The fixing platform 115 cooperates with the positioning notch 125 to install and position the first half-shell 110 and the second half-shell 120. The second half-shell 120 has a second support platform 124 protruding on the outer side of the two side walls in the first direction, which corresponds to the two stationary contacts 500 respectively. The second support platform 124 is located at the edge of the second half-shell 120 near the first half-shell 110 and is spliced ​​with the first support platform 114 on the same side, and together they are used to support the wiring part 501 of the corresponding stationary contact 500.

[0052] like Figure 3-5 As shown, the high-speed mechanical switch with dual-contact rotation separation in this embodiment includes at least two elastic elements corresponding to the two moving contacts 300 respectively. When the opening coil 600 drives the two moving contacts 300 to rotate from the closed position to the open position, the two moving contacts 300 respectively drive the corresponding elastic elements to store energy. The two moving contacts 300 rotate from the open position to the closed position under the joint drive of the closing coil 700 and the corresponding elastic elements. The elastic elements provide a closing holding force for the moving contacts 300, making the contact between the moving contacts 300 and the stationary contact 500 more reliable.

[0053] Furthermore, the two elastic elements are the same elastic element, a shared elastic element 400, with both ends of the shared elastic element 400 connected to the two moving contacts 300 respectively. The two moving contacts 300 share the same elastic element (shared elastic element 400), reducing the number of parts and simplifying the structure. The two moving contacts 300 are driven to rotate and close the circuit by the shared elastic element 400, ensuring the synchronous rotation of the two moving contacts 300. Of course, in other embodiments, the two elastic elements can also be independently set, being two elastic elements with the same or different structures. More elastic elements can also be used. The elastic elements can be torsion springs, compression springs, tension springs, leaf springs, or other elastic deformation elements or other elastic components, etc.

[0054] Preferred, such as Figure 9 As shown, the common elastic element 400 is a torsion spring, including two torsion spring bodies 401. The two torsion spring bodies 401 are respectively coaxially arranged with the rotation center of the two moving contacts 300 and located on the same side of the rotation center direction of the two moving contacts 300. One end of the two torsion spring bodies 401 is integrally connected, and the other end of the two torsion spring bodies 401 is an elastic arm 402, which is respectively connected to the two moving contacts 300. Specifically, since the moving contact 300 and the insulating shell 200 are integrally formed, the common elastic element 400 is connected to the moving contact 300 at intervals through the insulating shell 200, driving the moving contact 300 and the insulating shell 200 to rotate synchronously. The two torsion spring bodies 401 of the common elastic element 400 are respectively sleeved on the rotating part 201 on one side of the two insulating shells 200. The elastic arm 402 of the common elastic element 400 has a U-shaped structure, with one side longer than the other. The shorter sides of the two elastic arms 402 at both ends of the common elastic element 400 abut against the second buffer plane 204 of the two insulating shells 200. Furthermore, two common elastic elements 400 are provided, symmetrically arranged, located on both sides of the rotation center direction of the two insulating shells 200.

[0055] like Figure 4-5 , Figure 10-11As shown, the high-speed mechanical switch with dual-contact rotation separation in this embodiment includes at least two elastic limiting structures corresponding to the two moving contacts 300, respectively, for limiting the two moving contacts 300 in the open position. When the moving contacts 300 are subjected to the repulsive force of the closing coil 700, they can move to deform or move the elastic limiting structures, thereby releasing the elastic limiting structures from limiting the moving contacts 300. In this embodiment, the two elastic limiting structures are two elastic limiting members, each of which is provided with a moving contact limiting part 801. When the two moving contacts 300 rotate from the closed position to the open position, they first drive the corresponding elastic limiting member to store energy by acting on the moving contact limiting part 801. Then, the two elastic limiting members release energy to drive their moving contact limiting parts 801 to engage with the corresponding moving contacts 300, thereby limiting the corresponding moving contacts 300 to the open position and preventing them from rotating to the closed position. The elastic limit component relies on its own elasticity to store and release energy during the opening and rotation of the moving contact 300, thereby completing the automatic locking of the moving contact 300. The locking structure is simple and reliable, effectively avoiding accidental closing and improving safety.

[0056] Furthermore, the two elastic limiting members are the same elastic limiting member, which is a shared elastic limiting member 800 having two moving contact limiting parts 801. The two moving contacts 300 share the same elastic limiting member (shared elastic limiting member 800) to achieve tripping locking, reducing the number of parts and simplifying the structure. Of course, as in other embodiments, the two elastic limiting members can also be independently provided, and can be two elastic members with the same or different structures.

[0057] Preferably, the common elastic limiting member 800 is located on the side of the closing coil 700 away from the opening coil 600 and perpendicular to the closing coil 700, that is, the common elastic limiting member 800 is horizontally arranged below the closing coil 700. The middle part of the common elastic limiting member 800 is fixed to the outer shell 100, and both ends of the common elastic limiting member 800 protrude towards the closing coil 700, respectively, and are provided with two boss structures serving as the two moving contact limiting parts 801. The common elastic limiting member 800 has a simple structure, is easy to manufacture, and provides reliable locking and convenient unlocking. The common elastic limiting member 800 is preferably a long strip structure. The middle part of the common elastic limiting member 800 is fixed to the fixing platform 115 of the first half shell 110 of the outer shell 100 by fixing screws 900. The middle part of the common elastic limiting member 800 is provided with a second fixing hole 804. The fixing screws 900 are connected to the first fixing hole 116 on the fixing platform 115 and the second fixing hole 804 on the common elastic limiting member 800.

[0058] Specifically, the moving contact limiting part 801 is provided with a driven inclined surface 802 and a limiting inclined surface 803. The driven inclined surface 802 and the limiting inclined surface 803 are preferably formed by chamfering the two opposite corners of the end of the moving contact limiting part 801. The driven inclined surface 802 is located on the trajectory of the driving inclined surface 304 rotating from the closed position to the open position, and the limiting inclined surface 803 is located on the trajectory of the cooperating inclined surface 305 rotating from the open position to the closed position. When the moving contact 300 rotates from the closed position to the open position, it first rotates a certain angle and, through the action of the driving inclined surface 304 on the driven inclined surface 802, drives the corresponding elastic limit element to store energy. When the moving contact 300 continues to rotate to the open position, the driving inclined surface 304 separates from the driven inclined surface 802, causing the corresponding elastic limit element to release energy and drive the limiting inclined surface 803 to engage with the cooperating inclined surface 305 to limit the corresponding moving contact 300 to the open position. When the moving contact 300 rotates from the open position to the closed position, it first rotates a certain angle and, through the action of the cooperating inclined surface 305 on the limiting inclined surface 803, drives the corresponding elastic limit element to store energy. Then, the moving contact 300 continues to rotate until the cooperating inclined surface 305 separates from the limiting inclined surface 803, causing the corresponding elastic limit element to release energy and return to its original position, thus completing the automatic unlocking of the moving contact 300. Finally, the moving contact 300 continues to rotate to the closed position.

[0059] Obviously, the elastic limiting structure can also be implemented in other ways. For example, the elastic limiting structure includes a first elastic element and a rotatably configured locking element. The first elastic element drives the locking element to lock the moving contact 300 in the open position. The locking element can also be provided with a driven slope or a limiting slope.

[0060] The working principle of the high-speed mechanical switch with dual-contact rotary separation in this embodiment is as follows:

[0061] like Figure 3 As shown, when the high-speed mechanical switch is in the closed state, the circuit is flowing normally. The moving contact 303 of the two moving contacts 300 is in close contact with the stationary contact 502 of the two stationary contacts 500 respectively. The current flows sequentially through the stationary contact 500 on the left, the moving contact 300 on the left, the conductive connector 310, the moving contact 300 on the right, and the stationary contact 500 on the right.

[0062] like Figure 4As shown, when the high-speed mechanical switch is in the closed state, a tripping command is given. The drive circuit receives the command and causes a pulse current to flow through the tripping coil 600, generating a magnetic field. Under the influence of the magnetic field of the tripping coil 600, eddy currents are induced in the two moving contacts 300. A repulsive force F1 is generated between the tripping coil 600 and the two moving contacts 300. Under the action of the repulsive force F1, the two moving contacts 300 overcome the elastic force F2 of the common elastic element 400 and the corresponding insulating shell 200, and rotate together around the rotating part 201 to separate. When the two moving contacts... When the head 300 contacts the common elastic limit member 800, its driving inclined surface 304 acts on the corresponding driven inclined surface 802 of the common elastic limit member 800, causing the two moving contact limiting parts 801 of the common elastic limit member 800 to elastically deform downward. When the two moving contacts 300 move to the open position, the two moving contact limiting parts 801 of the common elastic limit member 800 return to their pre-deformation state, and the two limiting inclined surfaces 803 of the common elastic limit member 800 constrain and limit the opening of the cooperating inclined surfaces 305 of the two moving contacts 300.

[0063] like Figure 5 As shown, when the high-speed mechanical switch is in the open state, a closing command is given. The drive circuit receives the operation command, and a pulse current flows through the closing coil 700, generating a magnetic field. Under the action of the magnetic field of the closing coil 700, eddy currents are induced in the two moving contacts 300. A repulsive force F4 is generated between the closing coil 700 and the two moving contacts 300 respectively. Under the combined action of the repulsive force F4 of the closing coil 700 and the elastic force F2 of the common elastic element 400, the two moving contacts 300 overcome the horizontal constraint force F3 of the corresponding moving contact limiting part 801 and move towards the closing position. After reaching the closing position, the common elastic element 400 provides a closing holding force to the two moving contacts 300 respectively.

[0064] It should be noted that in the description of this utility model, the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used during use. They are only for ease of description and do not indicate that the device or component referred to must have a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating relative importance.

[0065] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. A high-speed mechanical switch with dual-contact rotary separation, comprising a housing (100), a repulsion assembly disposed within the housing (100), two stationary contacts (500), a tripping coil (600), and a closing coil (700), wherein the repulsion assembly comprises two moving contacts (300) corresponding to the two stationary contacts (500), and the two moving contacts (300) are electrically connected, characterized in that: The trip coil (600) and the closing coil (700) are arranged at an angle, forming two rotational spaces between them. Two moving contacts (300) are respectively rotatably arranged in the two rotational spaces. The trip coil (600) drives the two moving contacts (300) to rotate from the closed position to the trip position in the two rotational spaces, separating from the corresponding stationary contact (500). The closing coil (700) drives the two moving contacts (300) to rotate from the trip position to the close position in the two rotational spaces, contacting the corresponding stationary contact (500).

2. The high-speed mechanical switch with dual-contact rotary separation according to claim 1, characterized in that: The tripping coil (600) is located between the two stationary contacts (500) in the first direction, and the closing coil (700) is located below the tripping coil (600) and the two stationary contacts (500) in the second direction, such that the two rotation spaces are located on both sides of the closing coil (700) in the first direction and below the tripping coil (600) and the two stationary contacts (500) in the second direction. The rotation center of the moving contact (300) is set along a third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

3. The high-speed mechanical switch with dual-contact rotary separation according to claim 1, characterized in that: The rotation centers of the two moving contacts (300) are set parallel to each other.

4. The high-speed mechanical switch with dual-contact rotary separation according to claim 1, characterized in that: It includes at least two elastic elements corresponding to the two moving contacts (300) respectively; when the trip coil (600) drives the two moving contacts (300) to rotate from the closed position to the open position respectively, the two moving contacts (300) drive the corresponding elastic elements to store energy; the two moving contacts (300) rotate from the open position to the closed position under the joint drive of the closing coil (700) and the corresponding elastic elements respectively.

5. The high-speed mechanical switch with dual-contact rotary separation according to claim 4, characterized in that: The two elastic elements are the same elastic element, which is a common elastic element (400). The two ends of the common elastic element (400) are respectively connected to two moving contacts (300).

6. The high-speed mechanical switch with dual-contact rotary separation according to claim 5, characterized in that: The rotation centers of the two moving contacts (300) are arranged parallel to each other; the common elastic element (400) is a torsion spring, including two torsion spring bodies (401). The two torsion spring bodies (401) are respectively coaxially arranged with the rotation centers of the two moving contacts (300) and located on the same side of the rotation center direction of the two moving contacts (300). One end of the two torsion spring bodies (401) is integrally connected, and the other end of the two torsion spring bodies (401) is an elastic arm (402), which is respectively connected to the two moving contacts (300).

7. The high-speed mechanical switch with dual-contact rotary separation according to claim 1, characterized in that: It includes at least two elastic limiting structures corresponding to the two moving contacts (300) respectively, used to limit the two moving contacts (300) in the open position. When the moving contacts (300) are subjected to the repulsive force of the closing coil (700), the elastic limiting structures can release the limiting of the moving contacts (300).

8. The high-speed mechanical switch with dual-contact rotary separation according to claim 7, characterized in that: The two elastic limiting structures are two elastic limiting members, each of which is provided with a moving contact limiting part (801). When the two moving contacts (300) rotate from the closed position to the open position, they first drive the corresponding elastic limiting members to store energy by acting on the moving contact limiting part (801). Then, the two elastic limiting members release energy to drive their moving contact limiting parts (801) to cooperate with the corresponding moving contacts (300) for limiting the corresponding moving contacts (300) to the open position and preventing them from rotating to the closed position. The two elastic limiting members are the same elastic limiting member, which is a common elastic limiting member (800) provided with two moving contact limiting parts (801).

9. The high-speed mechanical switch with dual-contact rotary separation according to claim 8, characterized in that: The common elastic limiting member (800) is located on the side of the closing coil (700) away from the opening coil (600). The middle part of the common elastic limiting member (800) is fixed on the outer shell (100). The two ends of the common elastic limiting member (800) are respectively provided with two boss structures as two moving contact limiting parts (801) protruding towards the closing coil (700).

10. The high-speed mechanical switch with dual-contact rotary separation according to claim 8, characterized in that: The two moving contacts (300) each include a contact portion (302), and the contact portion (302) is provided with a moving contact (303). The end of the contact portion (302) is provided with a driving inclined surface (304) and a mating inclined surface (305). The moving contact limiting portion (801) is provided with a driven inclined surface (802) and a limiting inclined surface (803). The driven inclined surface (802) is located on the trajectory of the driving inclined surface (304) rotating from the closed position to the open position, and the limiting inclined surface (803) is located on the trajectory of the mating inclined surface (305) rotating from the open position to the closed position.

11. The high-speed mechanical switch with dual-contact rotary separation according to claim 1, characterized in that: Both the opening coil (600) and the closing coil (700) are disc-shaped structures, and the opening coil (600) and the closing coil (700) are perpendicular to each other.

12. The high-speed mechanical switch with dual-contact rotary separation according to claim 1, characterized in that: The repulsion assembly also includes two insulating shells (200), and two moving contacts (300) are at least partially installed in the two insulating shells (200). The two opposing surfaces of the insulating shells (200) are a first buffer plane (203) and a second buffer plane (204). When the moving contact (300) is in the closed position, the first buffer plane (203) of the insulating shell (200) faces the opening coil (600), and when the moving contact (300) is in the open position, the second buffer plane (204) of the insulating shell (200) faces the closing coil (700).

13. The high-speed mechanical switch with dual-contact rotary separation according to claim 1, characterized in that: The two moving contacts (300) each include a moving contact body (301) and a contact portion (302). The moving contact body (301) has a semi-disc structure. The arc edge of the moving contact body (301) is provided with the contact portion (302). The contact portion (302) is provided with a moving contact point (303).

14. The high-speed mechanical switch with dual-contact rotary separation according to claim 1, characterized in that: The outer casing (100) is provided with a first receiving cavity (101) and a second receiving cavity (102), and the opening coil (600) and closing coil (700) are respectively installed in the first receiving cavity (101) and the second receiving cavity (102).

15. The high-speed mechanical switch with dual-contact rotary separation according to claim 1, characterized in that: The tripping coil (600) is located between the two stationary contacts (500) in the first direction or above the two stationary contacts (500) in the second direction. The closing coil (700) is located above the tripping coil (600) in the second direction, such that the two rotation spaces are located on both sides of the tripping coil (600) in the first direction and below the closing coil (700) in the second direction. The rotation center of the moving contact (300) is set along a third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

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