mechanical switch

Abstract

A mechanical switch includes a housing, a contact mechanism, and an electromagnetic drive assembly. The contact mechanism includes a stationary contact and a moving contact assembly. The moving contact assembly includes a moving contact plate that cooperates with the stationary contact. The electromagnetic drive assembly includes a closing coil, a closing coil, and a repulsion disk. The housing includes a contact cavity and a drive cavity arranged along a first direction. The stationary contact and the moving contact plate are disposed within the contact cavity, and the electromagnetic drive assembly is disposed within the drive cavity. The moving contact assembly is at least partially slidably disposed within the contact cavity and the drive cavity. The repulsion disk located within the drive cavity is fixed to the moving contact assembly. The repulsion disk drives the moving contact assembly, causing the moving contact plate to move linearly within the contact cavity along the first direction. This separates the strong and weak currents of the contact mechanism and the electromagnetic drive assembly, improving safety during use.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage electrical appliances, specifically to a mechanical switch. Background Technology

[0002] A switching device is a device used to control the opening and closing of a circuit. A hybrid solid-state circuit breaker is a type of switching device, comprising a parallel mechanical switch and a power semiconductor. During closing, the power semiconductor connects first, followed by the mechanical switch. When encountering a fault current, the mechanical switch disconnects before the power semiconductor, ensuring zero arc generation during the closing and opening processes. The opening time of the mechanical switch directly affects the size and cost of the power semiconductor. Existing mechanical switches use an electromagnetic mechanism to unlock and rotate a shaft. This structure has the following drawbacks: First, the layout of the contact mechanism and electromagnetic drive assembly is unreasonable, failing to achieve functional separation, which is detrimental to functional expansion and cannot eliminate mutual interference. Second, the contact breaking capacity is limited. Third, the opening and closing actions are slow and the action time is long, especially during opening, resulting in a large current carried by the power semiconductor for a long time, which is not conducive to reducing size and cost. Fourth, the holding force of the mechanical switch when stably maintaining the closed or open position is insufficient, making it difficult to maintain a stable state. Utility Model Content

[0003] The purpose of this invention is to overcome at least one defect of the prior art and provide a mechanical switch.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A mechanical switch includes a housing, a contact mechanism, and an electromagnetic drive assembly. The contact mechanism includes a stationary contact and a moving contact assembly. The moving contact assembly includes a moving contact plate that cooperates with the stationary contact. The electromagnetic drive assembly includes a closing coil, a opening coil, and a repulsion disk. The repulsion disk is located between the closing coil and the opening coil. When energized, the closing coil generates a closing repulsion force with the repulsion disk, and when energized, the opening coil generates an opening repulsion force with the repulsion disk. The repulsion disk drives the moving contact assembly to move linearly to switch between the closing and opening positions.

[0006] The housing includes a contact cavity and a driving cavity arranged along a first direction. The contact cavity is provided with a stationary contact and a moving contact plate. The driving cavity is provided with an electromagnetic driving assembly. The moving contact assembly is at least partially slidably disposed in the contact cavity and the driving cavity. A repulsive disk located in the driving cavity is fixed on the moving contact assembly. The repulsive disk drives the moving contact assembly, causing the moving contact plate to move linearly within the contact cavity along the first direction.

[0007] Preferably, the stationary contact is fixed to the side wall of the contact cavity away from the driving cavity, the closing coil and the opening coil are spaced apart along a first direction, and the closing coil is fixed to the side wall of the driving cavity away from the contact cavity.

[0008] Preferably, the housing is provided with at least one set of contact mechanisms, each set of contact mechanisms including at least two stationary contacts and one moving contact assembly. Two adjacent stationary contacts in the same set of contact mechanisms are spaced apart in the second direction. The moving contact assembly includes a moving contact plate and an insulating base. The moving contact plate and the repulsion disk are both disposed on the insulating base.

[0009] Preferably, each group of contact mechanisms includes at least three stationary contacts spaced apart in a second direction and a moving contact assembly. The moving contact assembly includes at least two moving contact plates spaced apart in a second direction, with each moving contact plate engaging with two adjacent stationary contacts at its two ends.

[0010] Preferably, each stationary contact includes a stationary contact plate, the stationary contact plate having at least one stationary contact point, and the moving contact plate having at least one moving contact point at each end, with each moving contact point corresponding to a stationary contact point.

[0011] Preferably, in two adjacent sets of contact mechanisms, the two sets of moving contact plates are arranged side by side in the third direction, and the stationary contact plates in the two adjacent sets of contact mechanisms are arranged side by side in the third direction, or the two adjacent sets of stationary contact plates are connected as one unit in the third direction.

[0012] Preferably, all moving contact plates are mounted on the same insulating base, and all moving contact assemblies are driven by the same electromagnetic drive assembly.

[0013] Preferably, the insulating base is provided with a partition, and two adjacent movable contact plates are separated by the partition.

[0014] Preferably, the moving contact assembly further includes an insulating seat, which is slidably disposed in the contact cavity and the driving cavity, the moving contact plate is fixed to the portion of the insulating seat located in the contact cavity, and the repulsion disk is fixed to the portion of the insulating seat located in the driving cavity.

[0015] Preferably, the movable contact plate and the insulating base are connected by a compression spring assembly, and the relative movement of the movable contact plate and the insulating base in a first direction can cause the compression spring assembly to undergo elastic deformation.

[0016] Preferably, the insulating base includes a support plate located within the contact cavity. At least one pair of spaced-apart support sidewalls are provided on one side of the support plate, and at least two guide posts are provided on the other side of the support plate. The end of each guide post away from the support plate / moving contact plate is located within the driving cavity for fixed connection with the repulsion disk.

[0017] Preferably, the contact cavity and the drive cavity are separated by a partition. The partition is provided with a coil mounting groove and a guide hole. The trip coil is disposed in the coil mounting groove of the partition, and the guide post slides through the guide hole.

[0018] Preferably, the contact cavity is further provided with a steady-state holding component, which can provide magnetic force and / or elastic force to the moving contact component. When the moving contact component moves along the first direction, the steady-state holding component assists the repulsive disk to drive the moving contact component. After the moving contact moves into place, the steady-state holding component maintains the moving contact component in the closed position or the open position.

[0019] Preferably, the steady-state holding assembly includes a closing magnet, a opening magnet, an opening yoke, and a closing yoke. The closing magnet and the stationary contact are disposed on the same side wall of the contact cavity. The opening magnet and the closing magnet are disposed at intervals along a first direction within the contact cavity. The opening yoke and the closing yoke are both fixed to the moving contact assembly. When the moving contact assembly moves to the opening position, the opening yoke can be attracted to the opening magnet. When the moving contact assembly moves to the closing position, the closing yoke can be attracted to the closing magnet.

[0020] Preferably, the steady-state holding assembly includes at least two steady-state elastic elements, each of which is connected at both ends to the moving contact assembly and the housing, respectively. All the steady-state elastic elements are symmetrically arranged on both sides of the moving contact assembly. Under the action of the moving contact assembly, the steady-state elastic elements move between a closed stable position, a neutral position, and a closed stable position. In a first direction, the neutral position is located between the closed stable position and the closed stable position.

[0021] The steady-state elastic element is in the neutral position, and its central axis is perpendicular to the first direction. The steady-state elastic element is stationary in the closed stable position. The central axis of each steady-state elastic element forms an angle with the second direction to provide a closing holding force for the moving contact assembly in the closed position. The steady-state elastic element is stationary in the open stable position, and the central axis of each steady-state elastic element forms an angle with the first direction to provide an opening holding force for the moving contact assembly in the open position.

[0022] Preferably, the contact cavity is provided with at least one pair of receiving grooves (16), and each of the steady-state elastic elements is correspondingly assembled in one of the receiving grooves (16) and moves within the receiving grooves (16).

[0023] Preferably, the contact cavity is further provided with an arc extinguishing system, which extinguishes the electric arc generated by the contact mechanism during disconnection.

[0024] The mechanical switch of this invention has a housing divided into a contact cavity and a drive cavity, allowing the moving contact plate and the repulsion disk to move within the contact cavity and drive cavity respectively. This prevents the moving contact plate and the repulsion disk from interfering with each other. At the same time, it also facilitates the separation of strong and weak currents between the contact mechanism and the electromagnetic drive assembly in the mechanical switch, improving safety in use.

[0025] In addition, the contact mechanism is relatively flexible in its connection, and can be connected in parallel, series, or a combination of series and parallel, which helps to improve the breaking capacity of the mechanical switch.

[0026] In addition, all moving contact assemblies are driven by the same electromagnetic drive assembly, which can ensure the consistency of action of multiple contact mechanisms, reduce the number of parts used, and reduce costs.

[0027] In addition, by configuring a steady-state holding component, additional driving force can be provided during the movement of the moving contact, thereby increasing the opening and closing speed of the moving contact assembly. After the moving contact assembly moves into place, it can maintain the moving contact assembly in a stable state, which helps to ensure the stability of the mechanism. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of the first embodiment of this utility model;

[0029] Figure 2 This is an exploded structural diagram of the first embodiment of this utility model;

[0030] Figure 3 This is a cross-sectional view of the first embodiment of this utility model when the circuit is closed;

[0031] Figure 4 This is a cross-sectional view of the steady-state elastic element in the first embodiment of this utility model in the neutral position;

[0032] Figure 5 This is a cross-sectional view of the first embodiment of this utility model during circuit breaking;

[0033] Figure 6 This is a cross-sectional view of the first embodiment of the present invention during closing (the steady-state holding component is not shown);

[0034] Figure 7 yes Figure 6 Enlarged view of part B in the middle;

[0035] Figure 8 This is a schematic diagram of the structure of the shell in the first embodiment of this utility model;

[0036] Figure 9 This is a schematic diagram of the moving contact assembly and the repulsion disk in the first embodiment of this utility model;

[0037] Figure 10 yes Figure 9 A schematic diagram of the decomposed structure;

[0038] Figure 11 This is a schematic diagram of the structure of the insulating base in the first embodiment of this utility model. Figure 1 ;

[0039] Figure 12 This is a schematic diagram of the structure of the insulating base in the first embodiment of this utility model. Figure 2 ;

[0040] Figure 13 This is a schematic diagram of the structure of the second embodiment of this utility model after the shell has been removed;

[0041] Figure 14 This is a schematic diagram of the moving contact assembly in the second embodiment of this utility model;

[0042] Figure 15 This is a schematic diagram of the insulating base in the second embodiment of this utility model;

[0043] Figure 16 This is a structural schematic diagram of the third embodiment of this utility model;

[0044] Figure 17 This is a cross-sectional view of the third embodiment of this utility model when the circuit is closed;

[0045] Figure 18 yes Figure 17 Enlarged view of part A in the middle;

[0046] Figure 19 This is a cross-sectional view of the third embodiment of this utility model during circuit breaking;

[0047] Figure 20 This is an exploded structural diagram of the third embodiment of this utility model;

[0048] Figure 21 This is a schematic diagram of the sub-shell structure in the third embodiment of this utility model;

[0049] Figure 22 This is a schematic diagram of the moving contact assembly and the repulsion disk in the third embodiment of this utility model;

[0050] Figure 23 yes Figure 22 A schematic diagram of the decomposed structure;

[0051] Figure 24 This is a schematic diagram of the insulating base in the third embodiment of this utility model. Figure 1 ;

[0052] Figure 25 This is a schematic diagram of the structure of the insulating base in the third embodiment of this utility model. Figure 2 ;

[0053] Figure label:

[0054] 1-Housing, 101-Contact cavity, 102-Drive cavity, 11-First sub-housing, 12-Second sub-housing, 13-Partition plate, 14-Coil mounting slot, 15-Magnet mounting slot, 16-Receiving slot, 17-Stationary contact mounting slot, 21-Stationary contact, 210-Stationary contact plate, 211-Stationary contact point, 22-Moving contact, 220-Moving contact plate, 221-Moving contact point, 222-Slot, 23-Insulating base, 231-Bearing plate, 232-Magnetic yoke perforation 233-Snap fastener, 234-Spring groove, 235-Washer groove, 236-Nut groove, 237-Separator, 24-Compression spring assembly, 241-Connecting shaft, 242-Contact spring, 243-Elastic washer, 31-Closing coil, 32-Opening coil, 33-Repulsion disk, 411-Closing yoke, 412-Opening yoke, 421-Closing magnet, 422-Opening magnet, 43-Stable elastic element, 51-Guide hole, 52-Guide post. Detailed Implementation

[0055] The specific embodiments of the mechanical switch of this utility model are further described below with reference to the accompanying drawings. The mechanical switch of this utility model is not limited to the descriptions in the following embodiments.

[0056] like Figure 1 , 16 As shown, the mechanical switch includes a housing 1, within which a contact mechanism and an electromagnetic drive assembly are disposed. The contact mechanism controls the connection and disconnection of the circuit, as shown below. Figure 3-6 As shown in Figures 9, 10, 13, 14, 17, and 20, the contact mechanism includes a stationary contact 21 and a moving contact assembly spaced apart from each other. The stationary contact 21 has a stationary contact point 211, and the moving contact assembly includes a moving contact plate 220 (see Figure 20). Figure 9The moving contact plate 220 is provided with a moving contact 221 that cooperates with the stationary contact 211; the electromagnetic drive assembly includes a tripping coil 32, a closing coil 31, and a repulsion disk 33. The tripping coil 32 and the closing coil 31 are spaced apart, and the repulsion disk 33 is disposed between the closing coil 31 and the tripping coil 32. The repulsion disk 33 drives the moving contact assembly to move linearly. When the closing coil 31 is energized, the repulsion disk 33 induces eddy currents, causing eddy currents to be generated between the closing coil 31 and the repulsion disk 33. The repulsive force drives the moving contact assembly to move closer to the stationary contact 21 until the contact mechanism closes. The moving contact assembly moves to the closed position where it contacts the stationary contact 21. When the trip coil 32 is energized, the repulsive disk 33 induces eddy currents, causing a repulsive force between the trip coil 32 and the repulsive disk 33. This drives the moving contact assembly to move away from the stationary contact 21, causing the contact mechanism to open. The moving contact assembly moves to the open position where it is separated from the stationary contact 21.

[0057] For ease of description, the height, length, and width directions of shell 1 are respectively referred to as the first direction, the second direction, and the third direction, which are perpendicular to each other. Figure 1 , 13 In 16, the directions of the Y-axis, X-axis and Z-axis represent the first direction, the second direction and the third direction. The moving contact assembly and the stationary contact 21 are spaced apart and opposite each other in the first direction. The closing coil 31 and the opening coil 32 are spaced apart and opposite each other in the first direction. The moving contact assembly moves along the first direction.

[0058] The improvement of this application lies in that the housing 1 includes a contact cavity 101 and a drive cavity 102 arranged along a first direction. The contact cavity 101 contains a stationary contact 21 and a moving contact plate 220. The drive cavity 102 contains an electromagnetic drive assembly. The moving contact assembly is at least partially slidably disposed within the contact cavity 101 and the drive cavity 102. A repulsion disk 33 located within the drive cavity 102 is fixed to the moving contact assembly. The repulsion disk 33 drives the moving contact assembly, causing the moving contact plate 220 to move linearly within the contact cavity 101 along the first direction. Thus, the housing 1 is divided into the contact cavity 101 and the drive cavity 102, allowing the moving contact plate 220 and the repulsion disk 33 to move within the contact cavity 101 and the drive cavity 102 respectively. This prevents mutual interference between the moving contact plate 220 and the repulsion disk 33. Simultaneously, it facilitates the separation of the strong and weak currents between the contact mechanism and the electromagnetic drive assembly in the mechanical switch, improving safety during use.

[0059] Preferred, such as Figure 2As shown, the stationary contact 21 is fixed to the side wall of the contact cavity 101 away from the drive cavity 102. The closing coil 31 and the opening coil 32 are spaced apart along the first direction. The closing coil 31 is fixed to the side wall of the moving contact plate 220 away from the moving contact plate 220 / contact cavity 101, and the opening coil 32 is fixed to the side wall of the drive cavity 102 near the moving contact plate 220 / contact cavity 101. At this time, in the first direction, the stationary contact 21, the moving contact plate 220, the opening coil 32, the repulsion disk 33, and the closing coil 32 are all positioned in a relatively even configuration. The gate coil 31 is sequentially arranged inside the housing 1; of course, as in other embodiments, the stationary contact 21 can also be fixed in the contact cavity 101 near the drive cavity 102, and the closing coil 31 and the opening coil 32 are still spaced apart along the first direction. The opening coil 32 is fixed to the side wall of the drive cavity 102 away from the contact cavity 101. That is, in the first direction, the moving contact plate 220, the stationary contact 21, the closing coil 31, the repulsion disk 33 and the opening coil 32 are sequentially arranged inside the housing 1.

[0060] Furthermore, the contact cavity 101 is separated from the drive cavity 102, giving the contact cavity 101 more space. If the mechanical switch needs to be equipped with an arc extinguishing system, for example, when the mechanical switch is not used in a solid-state circuit breaker, the arc extinguishing system can be installed in the contact cavity 101. The arc extinguishing system includes an arc extinguishing chamber with multiple arc extinguishing grids. The arc extinguishing system extinguishes the arc generated by the contact mechanism, avoiding the electromagnetic drive assembly from being affected by the contact mechanism and the arc extinguishing system.

[0061] Additionally, refer to Figure 13 As shown, the contact cavity 101 has a larger space, enabling it to assemble two or more sets of contact mechanisms. Two adjacent sets of contact mechanisms are arranged side by side in the second / third direction. Each set of contact mechanisms includes at least two stationary contacts 21 and one moving contact 22. In the same set of contact mechanisms, two adjacent stationary contacts 21 are spaced apart in the second / third direction. The moving contact assembly includes a moving contact plate 220 and an insulating base 23. Both the moving contact plate 220 and the repulsion disk 33 are disposed on the insulating base 23.

[0062] Preferred, such as Figure 13 , 14As shown, each group of contact mechanisms includes at least three stationary contacts 21 spaced apart in the second direction. Each stationary contact 21 has at least one stationary contact point 211. The moving contact assembly includes at least two moving contact plates 220 spaced apart in the second direction. The two ends of each moving contact plate 220 respectively cooperate with two adjacent stationary contacts 21. That is, the two ends of the moving contact plate 220 are respectively provided with at least one moving contact point 221, and each moving contact point 221 corresponds to one stationary contact point 211. Thus, the moving contact 22 and the stationary contact point 211 are connected in series in the same group of contact mechanisms. Furthermore, in two adjacent groups of contact mechanisms, the two groups of stationary contact plates 210 are connected as one unit in the third direction, and the two groups of moving contact plates 220 are arranged side by side in the third direction. This enables the series and parallel connection of contact mechanisms, thereby improving the breaking capacity of the mechanical switch.

[0063] Furthermore, such as Figure 14 , 15 As shown, all moving contact plates 220 are mounted on the same insulating base 23. That is, when a set of contact mechanisms is provided in the housing 1, whether the moving contact 22 has one moving contact plate 220 or two or more moving contact plates 220, they are all mounted on the insulating base 23. When at least two sets of contact mechanisms are provided in the housing 1, all moving contact plates 220 in two adjacent sets of moving contact assemblies are assembled on the same insulating base 23. The insulating base 23 is driven by the same electromagnetic drive assembly to drive all moving contact assemblies. This can ensure the consistency of the operation of multiple sets of contact mechanisms, reduce the number of parts used, and reduce costs.

[0064] Preferred, such as Figure 3-5 As shown in Figures 1, 13, and 19, a steady-state holding assembly is also provided inside the housing 1. The steady-state holding assembly provides magnetic force and / or elastic force to the moving contact assembly. For example, the steady-state holding assembly includes a magnet and a yoke that cooperate with each other, and / or a steady-state elastic element 43. That is, the combination of the magnet and the yoke can be used as a steady-state holding assembly on its own, and the steady-state elastic element 43 can also be used as a steady-state holding assembly on its own. Of course, the two can also be used in combination. When the moving contact assembly moves along the first direction, the steady-state holding assembly assists the repulsive disk 33 in driving the moving contact assembly, thereby increasing the operating speed of the moving contact assembly. After the moving contact assembly moves into place, that is, after the closing coil 31 is de-energized, the steady-state holding assembly maintains the moving contact assembly in the closed position. After the opening coil 32 is de-energized, the steady-state holding assembly maintains the moving contact assembly in the open position.

[0065] Combination Figure 1-12 An embodiment of a first type of mechanical switch is provided.

[0066] like Figure 1-6As shown, the mechanical switch includes a housing 1, within which a contact mechanism and an electromagnetic drive assembly are disposed. A partition 13 is provided within the housing 1, dividing the space within the housing 1 into a contact cavity 101 and a drive cavity 102. The contact cavity 101 and the drive cavity 102 are vertically distributed in a first direction. The contact cavity 101 is used to house the contact mechanism, and the drive cavity 102 is used to house the electromagnetic drive assembly. The contact mechanism includes two stationary contacts 21 and a moving contact assembly. The electromagnetic drive assembly includes a closing coil 31, a opening coil 32, and a repulsion disk 33. Each stationary contact 21 includes a stationary contact plate 210, and each stationary contact plate 210 is arranged along a second direction. The stationary contact plate 210 has a stationary contact point 211 at one end and can extend beyond the housing 1 at the other end. The moving contact assembly includes an insulating base 23 and a moving contact plate 220. The insulating base 23 is slidably disposed in the contact cavity 101 and the drive cavity 102. The moving contact plate 220 is fixed to the part of the insulating base 23 located in the contact cavity 101. The repulsion disk 33 is fixed to the part of the insulating base 23 located in the drive cavity 102. The closing coil 31 is fixed to the side of the drive cavity 102 away from the contact cavity 101. The opening coil 32 is fixed to the side of the drive cavity 102 close to the contact cavity 101. In the first direction, the repulsion disk 33 is located between the closing coil 31 and the opening coil 32.

[0067] like Figure 3-5 As shown, a steady-state holding assembly is also disposed in the contact cavity 101. The steady-state holding assembly is disposed in the contact cavity 101. In this embodiment, the steady-state holding assembly includes steady-state elastic elements 43, and the number of them is at least two. The steady-state elastic elements 43 are connected between the moving contact assembly and the housing 1. That is, the steady-state elastic element is connected between the insulating base 23 and the inner sidewall of the contact cavity 101. In the second direction, all steady-state elastic elements 43 are symmetrically arranged on both sides of the moving contact assembly. After the moving contact assembly drives the steady-state elastic elements 43 past the neutral position, the steady-state elastic elements 43 that are stationary in the closed stable position or the open stable position can provide holding force for the moving contact assembly.

[0068] In this embodiment, the steady-state elastic element 43 is a linear spring, and there are two of them. In the second direction, the two steady-state elastic elements 43 are disposed on opposite sides of the insulating base 23. When the moving contact assembly is driven to move in a straight line by the repulsion disk 33, the moving contact assembly can drive each steady-state elastic element 43 to deform. Each steady-state elastic element 43 has a closed stable position (see...). Figure 3 ), neutral position (see Figure 4 ) and tripping stable position (see Figure 5 Furthermore, the steady-state elastic element 43 can remain stationary in either the closed or open stable position, with the neutral position being the position where the compression of the steady-state elastic element 43 is greatest. The moving contact assembly crosses the neutral position by inertia.

[0069] Specifically, when the steady-state elastic element 43 is in the neutral position, its central axis is perpendicular to the first direction. In this embodiment, the central axis of the steady-state elastic element 43 is parallel to the second direction. When the steady-state elastic element 43 is in the closed stable position or the open stable position, its central axis forms an angle with the second direction. This can also be understood as the energy storage process occurring when switching from the closed stable position or the open stable position to the neutral position. This energy storage process is completed by the moving contact assembly driving the steady-state elastic element 43. The energy release process occurs when switching from the neutral position to the closed stable position or the open stable position. The energy released by the steady-state elastic element 43 can... The moving contact assembly is moved together, thereby further improving the opening and closing action of the contact mechanism. When the steady-state elastic element 43 moves to the closing position or the opening position, the steady-state elastic element 43 can provide a holding force for the moving contact assembly. That is, in the closed stable position, the steady-state elastic element 43 provides a closing holding force for the moving contact assembly in the closed position and has a component force that drives the moving contact assembly to move to the closed position. In the opening stable position, the steady-state elastic element 43 provides an opening holding force for the moving contact assembly in the opening position and has a component force that drives the moving contact assembly to move to the opening position. That is, the closing holding force and the component force of the closing holding force in the first direction are opposite.

[0070] Combination Figure 3-7 Briefly describe the opening and closing process in this embodiment.

[0071] When the contact mechanism is in the closed position, the steady-state elastic element 43 is in the stable closed position. Figure 3 In the middle, the steady-state elastic element 43 is tilted upward, and the steady-state elastic element 43 applies pressure to the moving contact assembly. The component of this pressure in the first direction is an upward pressure, which is the closing holding force, and can further press the moving contact assembly to stably maintain the moving contact assembly in the closed position. When the opening coil 32 is energized, the repulsion disk 33 generates eddy currents, and an opening repulsion force is generated between the repulsion disk 33 and the opening coil 32. The opening repulsion force overcomes the elastic force of the steady-state elastic element and drives the moving contact assembly to move away from the stationary contact 21 along the first direction. During the movement of the moving contact assembly, the steady-state elastic element 43 crosses the neutral position (see Figure 4 The moving contact assembly is driven by the steady-state elastic element 43 and the opening repulsion force. The steady-state elastic element 43, which eventually comes to rest in the opening stable state, maintains the moving contact assembly in the opening state (see...). Figure 5 ).

[0072] When the contact mechanism is in the open position, the steady-state elastic element 43 is in the stable open position. Figure 5In the circuit, the steady-state elastic element 43 applies pressure to the moving contact assembly. The component of this pressure in the first direction is a downward pressure, which is the opening holding force. This force can press the moving contact assembly, keeping it separated from the stationary contact 21 in an open state. When the closing coil 31 is energized, the repulsion disk 33 generates eddy currents, creating a closing repulsion force between the repulsion disk 33 and the closing coil 31. This closing repulsion force overcomes the elastic force of the steady-state elastic element 43, driving the moving contact assembly to move closer to the stationary contact 21 along the first direction. During this process, the moving contact assembly drives the steady-state elastic element 43 from the open stable position to the neutral position (see...). Figure 4 Subsequently, the moving contact assembly is driven by the steady-state elastic element 43 and the opening repulsion force, and finally the moving contact assembly is maintained in the closed state by the steady-state elastic element 43, which is stationary in the closed stable state (see...). Figure 3 ).

[0073] Preferred, such as Figure 6 , 7 As shown, the moving contact assembly also includes a spring assembly 24. The moving contact plate 220 and the insulating seat 23 are elastically connected through the spring assembly 24. When closing, if the pressure applied by the steady-state elastic component to the moving contact assembly is greater than the elastic force of the spring assembly 24, the moving contact plate 220 and the insulating seat 23 will move relative to each other, thereby achieving overtravel during closing, which is beneficial to optimizing product performance.

[0074] Combination Figure 1-6 8 provides a housing 1 structure applicable to this embodiment.

[0075] like Figure 1-6 As shown in Figure 8, the housing 1 has a rectangular structure in the cross section perpendicular to the third direction. Inside the housing 1, there is a partition 13, which divides the internal space of the housing 1 into a contact cavity 101 and a drive cavity 102. The contact cavity 101 and the drive cavity 102 are distributed along the first direction. The contact cavity 101 is used to assemble the contact mechanism, and the drive cavity 102 is used to assemble the electromagnetic drive assembly.

[0076] like Figure 2 , 8 As shown, a stationary contact mounting groove 17 is provided in the contact cavity 101. Figure 8 In the contact cavity 101, the stationary contact mounting groove 17 is located on the side away from the drive cavity 102. Preferably, the stationary contact mounting groove 17 has an opening on the adjacent side wall, allowing one end of the stationary contact 21 to extend out of the housing 1 from the opening. A receiving groove 16 is formed on the inner side wall of the contact cavity 101, and each receiving groove 16 contains a stable elastic element 43. Figure 3-5In section 8, two receiving slots 16 are spaced apart in the second direction. The opening of each receiving slot 16 faces the moving contact assembly, and the inner diameter of the opening of the receiving slot 16 is larger than the inner diameter of the bottom of the receiving slot 16, making the sidewall of the receiving slot 16 an inclined sidewall. The inclination angle of the sidewall is adapted to the inclination degree of the steady-state elastic element 43 in the closed stable position and the open stable position. A coil mounting slot 14 is provided in the drive cavity 102. One coil mounting slot 14 is provided on the side of the drive cavity 102 away from the partition plate 13, and the other coil mounting slot 14 is provided on the partition plate 13. In this embodiment, the opening coil 32 is installed in the coil mounting slot 14 on the partition plate 13, and the closing coil 31 is installed in the coil mounting slot 14 away from the partition plate 13. In addition, a guide hole 51 is also provided on the partition plate 13. The guide hole 51 connects the contact cavity 101 and the drive cavity 102 in the first direction. The central axis of the guide hole 51 is parallel to the first direction. In the second direction, at least one guide hole 51 is provided on each of the opposite sides of the coil mounting slot 14.

[0077] Furthermore, the coil mounting slots 14 are all enclosed in the inner wall of the housing 1 or in the partition 13, which helps to improve the isolation effect and avoid mutual interference. Preferably, the housing 1 includes a first sub-housing 11 and a second sub-housing 12 assembled along a third direction. The first sub-housing 11 and the second sub-housing 12 have a symmetrical structure. The partition 13, the coil mounting slots 14 and the guide hole 51 are all formed by the first sub-housing 11 and the second sub-housing 12 joined together. The opening of the coil mounting slot 14 is located at the joint of the first sub-housing 11 and the second sub-housing 12, which facilitates the installation of the opening coil 32 and the closing coil 31.

[0078] Combination Figure 2-7 9-12 provides a contact mechanism applicable to this embodiment.

[0079] like Figure 2-6 As shown, the stationary contact 21 includes a stationary contact plate 210. The stationary contact plate 210 is a strip-shaped plate. The stationary contact plate 210 is inserted into a stationary contact mounting groove 17 along the second direction. One end of the stationary contact plate 210 is located inside the housing 1 and is provided with a stationary contact point 211. The other end is located outside the housing 1 and is provided with a wiring hole.

[0080] like Figure 2-7 As shown in Figures 9 and 10, the moving contact assembly includes a moving contact plate 220, an insulating base 23, and a spring assembly 24. The middle part of the moving contact plate 220 is elastically connected to the insulating base 23 through the spring assembly 24. When the circuit is closed, the spring assembly 24 causes the insulating base 23 and the moving contact plate 220 to move relative to each other in a first direction, thereby achieving overtravel and optimizing product performance. Of course, as another embodiment, the spring assembly 24 can be omitted, and the moving contact plate 220 can be directly fixed on the insulating base 23.

[0081] The movable contact plate 220 is generally strip-shaped, with a movable contact 221 at each end. Each movable contact 221 corresponds to a stationary contact 211. A through hole is provided in the middle of the movable contact plate 220 for mounting the compression spring assembly 24. Figure 6 , 7 As shown, in this embodiment, the through hole is a stepped hole, with the thicker end of the through hole located on the side opposite to the insulating base 23, and the thinner end of the through hole located on the side close to the insulating base 23.

[0082] like Figure 9-12 As shown, the insulating base 23 includes a support plate 231. One side of the support plate 231 is provided with at least a pair of spaced-apart opposing support sidewalls. In the second direction, a spring connecting part is provided on each opposite side of the support plate 231. Each spring connecting part is used to connect with a steady elastic element 43. At least two circular mounting platforms are provided in the middle of the support plate 231. In this embodiment, four mounting platforms are provided in the middle of the support plate 231. The line connecting the four mounting platforms is rectangular. A through hole is provided in the middle of each mounting platform. Two annular grooves concentric with the through hole are provided on the surface of the mounting platform. The annular groove with a larger diameter serves as a spring groove 234, and the annular groove with a smaller diameter serves as a gasket groove 235. The groove depth of the gasket groove 235 is less than the groove depth of the spring groove 234. A nut groove 236 is provided at the end of the through hole away from the mounting platform. A nut is fitted in the nut groove 236.

[0083] like Figure 9 , 10 As shown in Figure 12, at least two guide posts 52 are provided on the other side of the support plate 231. The at least two guide posts 52 are spaced apart from each other in the second direction. Each guide post 52 slides through a guide hole 51 on the partition plate 13, so that the guide post 52 passes through the contact cavity 101 and the drive cavity 102 in the first direction. In this embodiment, there are two guide posts 52, which are symmetrically arranged on opposite sides of the support plate 231. Each guide post 52 has a mounting hole in the middle. Each mounting hole is coaxial with the guide post 52. By setting fasteners in the guide post 52, the repulsion disk 33 can be fixed on the insulating seat 23, and the guide post 52 and the fastener are integrated into one, avoiding the occupation of too much space.

[0084] like Figure 6 , 7As shown in Figure 10, the compression spring assembly 24 includes a connecting shaft 241, a contact spring 242, and an elastic washer 243. The contact spring 242 and the elastic washer 243 are respectively installed in the spring groove 234 and the washer groove 235 of the bearing plate 231. The connecting shaft 241 passes through the through hole of the moving contact plate 220 and the through hole of the mounting platform in sequence, and is threadedly connected to the nut in the nut groove 236. In this embodiment, the connecting shaft 241 is a stepped shaft with one end thicker than the other. The thicker end of the connecting shaft 241 protrudes in the circumferential direction to form a positioning platform. The positioning platform slides with the thicker area in the through hole. That is, in the open state, the bottom surface of the positioning platform is in contact with the bottom surface of the thicker area in the through hole. In the closed state (see Figure 10), the positioning platform slides with the thicker area in the through hole. Figure 6 , 7 A certain gap is left between the bottom surface of the positioning platform and the bottom surface of the thicker area in the through hole; this gap is the overtravel distance. Figure 7 The connecting shaft 241, marked with the letter D, has its thinner end threaded into the nut in the nut groove 236. A contact spring 242 is fitted on the outside of the connecting shaft 241. The two ends of the contact spring 242 abut against the moving contact plate 220 and the spring groove 234, respectively. The stepped surface in the middle of the connecting shaft 241 can elastically abut against the elastic washer 243.

[0085] In this embodiment, as Figure 2-6 As shown in Figures 9 and 10, the electromagnetic drive assembly includes a closing coil 31, a closing coil 32, and a repulsion disk 33. The closing coil 31 and the closing coil 32 are arranged at intervals opposite to each other in the drive cavity 102 in the first direction. The closing coil 31 is arranged in the coil mounting groove 14 of the drive cavity 102 away from the contact cavity 101, and the closing coil 32 is arranged in the coil mounting groove 14 of the partition plate 13. In the first direction, the repulsion disk 33 is located in the drive cavity 102 between the closing coil 31 and the closing coil 32. In this embodiment, the repulsion disk 33 includes a disc body, and connecting plates are formed on opposite sides of the disc body. Each connecting plate is provided with a mounting hole corresponding to the guide post 52, so that the repulsion disk 33 can be fixed on the guide post 52.

[0086] Combination Figure 13-15 An embodiment of a second type of mechanical switch is provided.

[0087] The mechanical switch includes a housing 1, and the housing 1 is provided with a contact mechanism, an electromagnetic drive assembly, and a steady-state holding assembly. The housing 1, the electromagnetic drive assembly, and the steady-state holding assembly are the same as those in the first embodiment, but the contact mechanism is different from that in the first embodiment.

[0088] In this embodiment, as Figure 13 , 14As shown, the housing 1 is provided with two sets of contact mechanisms arranged in parallel in the third direction. Each set of contact mechanisms includes at least three stationary contacts 21 spaced apart in the second direction and a moving contact assembly. The moving contact assembly includes at least two moving contact plates 220 spaced apart in the second direction. Each moving contact plate 220 cooperates with two adjacent stationary contacts 21 respectively.

[0089] In this embodiment, each contact mechanism includes three stationary contacts 21 and one moving contact assembly. Each stationary contact 21 includes a stationary contact plate 210, which is installed in the stationary contact mounting groove 17 of the housing 1 along the second direction. A stationary contact point 211 is provided near the end of the stationary contact plate 210. The moving contact assembly includes two moving contact plates 220 and an insulating base 23. Figure 13 , 14 As shown, three stationary contacts 21 are spaced apart in the second direction. The stationary contact plate 210 located in the middle position has two stationary contact points 211, which are spaced apart in the second direction. The two stationary contact plates 210 located on both sides each have a stationary contact point 211. Two moving contact plates 220 are spaced apart on the insulating base 23 along the second direction. Each moving contact plate 220 has a moving contact point 221 at both ends. One moving contact plate 220 cooperates with one stationary contact 21 on the side and one stationary contact 21 in the middle position. The other moving contact plate 220 cooperates with another stationary contact 21 on the side and one stationary contact 21 in the middle position. The moving contact point 221 on each moving contact plate 220 corresponds one-to-one with the stationary contact point 211 on the stationary contact 21. Thus, the three stationary contacts 21 are connected in series through the two moving contact plates 220.

[0090] The two sets of contact mechanisms are arranged side by side in a third-direction upward direction, that is, the stationary contact plates 210 in two adjacent sets of contact mechanisms are arranged side by side in a third-direction upward direction. Preferably, as shown in the figure... Figure 13 As shown, the two sets of stationary contact plates 210 are connected as one unit in the third direction. That is, each stationary contact plate 210 has at least two stationary contacts 211 that are spaced apart and opposite each other in the third direction. The moving contact plates 220 in the two sets of contact mechanisms are arranged side by side in the third direction. At this time, the moving contacts 22 in the two adjacent sets of contact mechanisms are connected in parallel. In this way, the two sets of contact mechanisms form a connection method that combines series and parallel connections, which is beneficial to improving the breaking capacity of the mechanical switch. Of course, all stationary contacts 21 in the same position can share one stationary contact plate 210, which can further improve the breaking capacity of the mechanical switch.

[0091] In this embodiment, as Figure 14As shown, all the moving contact plates 220 in the two sets of contact mechanisms are jointly arranged on the same insulating base 23. That is, four moving contact plates 220 are jointly arranged on the same insulating base 23. Preferably, the insulating base 23 is provided with a partition 237, and two adjacent moving contact plates 220 are separated by the partition 237. In this way, all moving contact plates 220 are driven by the same insulating base 23 to cooperate with multiple stationary contacts 21 respectively. Only one electromagnetic drive assembly needs to be arranged in the drive cavity 102, which can reduce the number of parts and reduce costs.

[0092] In this embodiment, the insulating base 23 is supplemented with a partition 237 based on the first embodiment.

[0093] like Figure 15 As shown, the insulating base 23 includes a support plate 231. One side of the support plate 231 has a pair of spaced-apart opposing support sidewalls. In a second direction, each opposite side of the support plate 231 has a spring connecting portion, each spring connecting portion being used to connect with a stable elastic element 43. A dividing portion 237 is provided in the middle of the support plate 231, dividing the plate surface of the support plate 231 into four parts along the second and third directions. Each part has two circular mounting platforms in the middle, each mounting platform having a through hole in the middle. The surface of the mounting platform has two annular grooves concentric with the through hole, wherein the larger diameter annular groove serves as a spring groove 234, and the smaller diameter annular groove serves as a gasket groove 235. The depth of the gasket groove 235 is less than the depth of the spring groove 234. The hole has a nut groove 236 at the end away from the mounting platform, and a nut is fitted in the nut groove 236. At least two guide posts 52 are provided on the other side of the support plate 231. The at least two guide posts 52 are spaced apart and opposite each other in the second direction. Each guide post 52 slides through a guide hole 51 on the partition plate 13, so that the guide post 52 passes through the contact cavity 101 and the drive cavity 102 in the first direction. In this embodiment, there are two guide posts 52, which are symmetrically arranged on opposite sides of the support plate 231. Each guide post 52 has a mounting hole in the middle. Each mounting hole is coaxial with the guide post 52. By setting fasteners in the guide posts 52, the repulsion disk 33 can be fixed on the insulating seat 23, and the guide post 52 and the fastener are integrated into one, avoiding the occupation of too much space.

[0094] In this embodiment, each movable contact plate 220 is elastically mounted on the insulating base 23 via a compression spring assembly 24. The connection method of the movable contact plate 220, the compression spring assembly 24, and the insulating base 23 is the same as in the first embodiment.

[0095] Combination Figure 16-25 An embodiment of a third type of mechanical switch is provided.

[0096] like Figure 16-20As shown, the mechanical switch includes a housing 1, within which a contact mechanism, an electromagnetic drive assembly, and a steady-state holding assembly are provided. The contact mechanism includes two stationary contacts 21 and a moving contact assembly. The two stationary contacts 21 are fixed within the housing 1 along a second direction. The moving contact assembly is spaced apart from the two stationary contacts 21 in a first direction. Each stationary contact 21 adopts the same structure as in the first embodiment. The moving contact assembly includes a moving contact plate 220 and an insulating base 23. The insulating base 23, as a support structure for the moving contact plate 220, is slidably mounted within the housing 1. The electromagnetic drive assembly includes a closing coil 31, a opening coil 32, and a repulsion disk 33. The steady-state holding assembly includes a closing magnet 421 and an opening magnet 422. The magnet 422 and the yoke are provided, wherein the yoke is divided into a closing yoke 411 and a closing yoke 412. In the first direction, the closing coil 32 and the closing magnet 421 are jointly disposed on the same side wall of the housing 1, and the closing coil 31 and the closing magnet 422 are jointly disposed on the other side wall of the housing 1. In this embodiment, the housing 1 includes two sub-housings that cover each other in the third direction. In the third direction, the closing coil 32, the closing magnet 421, the closing coil, and the closing magnet 422 are each mounted on one of the two sub-housings. Taking the closing coil 32 as an example, in the third direction, half of the closing coil 32 is mounted on one sub-housing and the other half is mounted on the other sub-housing (see...). Figure 20 , 21 The closing coil 31 and the opening coil 32 are spaced apart and opposite each other in the first direction. The repulsion disk 33, the opening magnetic yoke 412 and the closing magnetic yoke 411 are jointly disposed on the insulating base 23. The repulsion disk 33 is located between the closing coil 31 and the opening coil 32, and the closing magnetic yoke 411 and the opening magnetic yoke 412 are located between the closing magnet 421 and the opening magnet 422.

[0097] Furthermore, the closing coil 31 and the opening coil 32 are located on the same side of the moving contact plate 220 opposite to the stationary contact 21. That is, in this embodiment, in the first direction, the stationary contact 21 and the closing magnet 421 are at the same height, and the stationary contact 21 / closing magnet 421, the moving contact plate 220, the opening magnet 422, the opening coil 32, the repulsion disk 33, and the closing coil 31 are arranged in sequence. Of course, as another embodiment, in the first direction, the opening magnet 422, the moving contact plate 220, the stationary contact 21 / closing magnet 421, the closing coil 31, the repulsion disk 33, and the opening coil 32 can also be arranged in sequence, so that the moving contact plate 220 and the repulsion disk 33 can move in different areas respectively, avoiding mutual interference.

[0098] Preferably, the internal space of the housing 1 is divided into a contact cavity 101 and a drive cavity 102. The contact mechanism is disposed in the contact cavity 101, and the electromagnetic drive assembly is disposed in the drive cavity 102. The contact cavity 101 and the drive cavity 102 provide moving space for the moving contact plate 220 and the repulsion disk 33, respectively, effectively separating the contact mechanism and the electromagnetic drive assembly, which is conducive to realizing the separation of strong and weak currents.

[0099] Furthermore, such as Figure 19-21 As shown in Figure 23, a guide structure is disposed between the housing 1 and the insulating base 23. The guide post 52 is disposed on the insulating base 23, and the guide hole 51 is opened on the partition plate 13, allowing the guide post 52 to slide through the guide hole 51. The partition plate 13 forms a contact cavity 101 and a drive cavity 102 within the housing 1, which can separate the contact mechanism and the electromagnetic component into two relatively independent spaces, realizing the separation of strong and weak currents.

[0100] Furthermore, the separation of the contact cavity 101 from the drive cavity 102 allows the contact cavity 101 to have a relatively large capacity. When the mechanical switch needs to be equipped with an arc extinguishing system, the arc extinguishing system can be set inside the contact cavity 101, and the arc extinguishing system can work together to extinguish the arc generated by the contact mechanism.

[0101] Combination Figure 16 , 17 19-21 provides a housing 1 structure applicable to this embodiment.

[0102] like Figure 16 , 20 As shown in Figure 21, the housing 1 has an overall rectangular structure. Inside the housing 1, there is a partition 13. The partition 13 divides the internal space of the housing 1 into a contact cavity 101 and a drive cavity 102. The contact cavity 101 and the drive cavity 102 are distributed along a first direction. The contact cavity 101 is used to assemble the contact mechanism, and the drive cavity 102 is used to assemble the electromagnetic drive assembly.

[0103] like Figure 21 As shown, a stationary contact mounting groove 17 is provided in the contact cavity 101. Figure 21 In this embodiment, the stationary contact mounting groove 17 is located on the side of the contact cavity 101 away from the drive cavity 102. Preferably, the stationary contact mounting groove 17 has an opening on the adjacent side wall, so that one end of the stationary contact 21 can extend out of the housing 1 from the opening. Two magnet mounting grooves 15 are provided in the contact cavity 101. The two magnet mounting grooves 15 are spaced apart in a first direction. In a second direction, one magnet mounting groove 15 is located between the two stationary contact mounting grooves 17, and the other magnet mounting groove 15 is provided on the partition plate 13. In this embodiment, the magnet mounting groove 15 between the stationary contact mounting grooves 17 is used to assemble the closing magnet 421, and the magnet mounting groove 15 on the partition plate 13 is used to assemble the opening magnet 422.

[0104] A coil mounting slot 14 is provided within the drive cavity 102. One coil mounting slot 14 is located on the side of the drive cavity 102 away from the partition 13, and the other coil mounting slot 14 is located on the partition 13. Preferably, the magnet mounting slot 15 on the partition 13 is isolated from the coil mounting slot 14. In this embodiment, the opening coil 32 is assembled in the coil mounting slot 14 on the partition 13, and the closing coil 31 is assembled in the coil mounting slot 14 away from the partition 13. In addition, a guide hole 51 is also provided on the partition 13. The guide hole 51 connects the contact cavity 101 and the drive cavity 102 in a first direction, and the central axis of the guide hole 51 is parallel to the first direction. In a second direction, at least one guide hole 51 is provided on each of the opposite sides of the coil mounting slot 14 (magnet mounting slot 15).

[0105] Furthermore, such as Figure 20 , 21 As shown, the coil mounting slot 14 and the magnet mounting slot 15 are both enclosed in the inner wall of the housing 1 or in the partition 13, which helps to improve the isolation effect and avoid mutual interference. Preferably, the housing 1 includes a first sub-housing 11 and a second sub-housing 12 assembled along a third direction. The first sub-housing 11 and the second sub-housing 12 have a symmetrical structure. The partition 13, the coil mounting slot 14, the magnet mounting slot 15 and the guide hole 51 are all formed by the first sub-housing 11 and the second sub-housing 12 joined together. The openings of the coil mounting slot 14 and the magnet mounting slot 15 are located at the joint of the first sub-housing 11 and the second sub-housing 12, which facilitates the installation of the coil and the magnet.

[0106] In this embodiment, as Figure 20 , 22 As shown in Figure 25, the contact mechanism includes a stationary contact 21 and a moving contact assembly. The moving contact assembly includes a moving contact plate 220, an insulating seat 23, and a compression spring assembly 24. The stationary contact 21 and the moving contact assembly can be referred to in the first embodiment. The difference from the first embodiment is that the insulating seat 23 in this embodiment has been further improved based on the first embodiment.

[0107] like Figure 22-25 As shown, the insulating base 23 includes a support plate 231. One side surface of the support plate 231 is provided with at least a pair of spaced-apart support sidewalls. The edge of the support sidewall is provided with a buckle 233, so that the buckle 233 and the support plate 231 are spaced-apart from each other in a first direction. The gap between the buckle 233 and the support plate 231 is used to provide moving space for the movable contact plate 220. Correspondingly, the edge of the movable contact plate 220 is provided with a slot 222 corresponding to the buckle 233. In this embodiment, the slot 222 is located at the corner of the movable contact plate 220. When the movable contact plate 220 is placed on the support plate 231, the buckle 233 corresponds to the slot 222, and the buckle 233 can limit the movement stroke of the movable contact plate 220. Of course, the movable contact plate 220 can also be implemented without the slot 222.

[0108] like Figure 24 , 25 As shown, a magnetic yoke mounting groove is provided in the middle of the bearing plate 231. The magnetic yoke mounting groove is generally strip-shaped. Two magnetic yoke through holes 232 are opened at the bottom of the magnetic yoke mounting groove, and each magnetic yoke through hole 232 penetrates the bearing plate 231. Two circular mounting platforms are also provided on the bearing plate 231. In the second direction, the mounting platforms are located between the magnetic yoke mounting groove and the bearing side wall. Each mounting platform has a through hole in the middle. The surface of the mounting platform has two annular grooves concentric with the through hole. The annular groove with a larger diameter serves as a spring groove 234, and the annular groove with a smaller diameter serves as a gasket groove 235. The groove depth of the gasket groove 235 is less than the groove depth of the spring groove 234. A nut groove 236 is provided at the end of the through hole away from the mounting platform. A nut is assembled in the nut groove 236.

[0109] like Figure 25 As shown, at least two guide posts 52 are provided on the other side of the support plate 231. The at least two guide posts 52 are spaced apart from each other in the second direction. Each guide post 52 slides through a guide hole 51 on the partition plate 13, so that the guide post 52 passes through the contact cavity 101 and the drive cavity 102 in the first direction. In this embodiment, there are two guide posts 52, which are symmetrically arranged on opposite sides of the support plate 231. Each guide post 52 has a mounting hole in the middle. Each mounting hole is coaxial with the guide post 52. By setting fasteners in the guide post 52, the repulsion disk 33 can be fixed on the insulating seat 23, and the guide post 52 and the fastener are integrated into one, avoiding the occupation of too much space.

[0110] Combination Figure 19 , 20 An electromagnetic drive component and a steady-state holding component are provided for use in this embodiment, such as Figure 20 As shown, the electromagnetic drive assembly includes a closing coil 31, a closing coil 32, and a repulsion disk 33. The closing coil 31 and the closing coil 32 are arranged at intervals opposite to each other in the drive cavity 102 in the first direction. The closing coil 31 is arranged in the coil mounting groove 14 of the drive cavity 102 away from the contact cavity 101, and the closing coil 32 is arranged in the coil mounting groove 14 of the partition plate 13. In the first direction, the repulsion disk 33 is located in the drive cavity 102 between the closing coil 31 and the closing coil 32. In this embodiment, the repulsion disk 33 includes a disc body, and connecting plates are formed on opposite sides of the disc body. Each connecting plate is provided with a mounting hole corresponding to the guide post 52, so that the repulsion disk 33 can be fixed on the guide post 52.

[0111] The steady-state holding assembly includes a closing magnet 421, a opening magnet 422, and a yoke. The closing magnet 421 is disposed in a magnet mounting groove 15 between two stationary contact mounting grooves 17, and the opening magnet 422 is disposed in a magnet mounting groove 15 in the partition plate 13. The yoke 41 is fixed on the insulating seat 23 of the moving contact 22, and the yoke is fixed between the moving contact plate 220 and the insulating seat 23. The yoke is divided into a closing magnetic yoke 411 and an opening magnetic yoke 412.

[0112] Specifically, the magnetic yoke includes two stacked magnetic yoke plates fixed to the insulating base 23. The middle of the two magnetic yoke plates is fixed. The magnetic yoke plate closer to the moving contact plate 220 is the closing magnetic yoke 411, and the magnetic yoke plate closer to the insulating base 23 is the opening magnetic yoke 412. The two ends of the closing magnetic yoke 411 extend from the two sides of the moving contact plate 220 toward the closing magnet 421 to form a closing attraction part. The two ends of the opening magnetic yoke 412 extend from the two sides of the moving contact plate 220 toward the opening magnet 422 to form an opening attraction part. In the figure, the opening magnetic yoke 412 and the opening magnetic yoke 412 are U-shaped structures as a whole. The opening attraction part passes through the magnetic yoke 41 through hole 232 on the bearing plate 231.

[0113] Combination Figure 17-19 Briefly describe the opening and closing process of the contact mechanism in this embodiment:

[0114] like Figure 17 As shown, when the contact mechanism closes, the closing magnet 421 and the closing yoke 411 are attracted, keeping the moving contact assembly and the stationary contact 21 in a closed state of mutual contact. Simultaneously, the attraction between the closing magnet 421 and the closing yoke 411 overcomes the elastic force of the contact spring 242 in the compression spring assembly 24, allowing the moving contact plate 220 to move further towards the stationary contact 21 relative to the insulating base 23 in the first direction, achieving closing overtravel (see...). Figure 18 (where D represents the overtravel gap). When the trip coil 32 is energized, the repulsion disk 33 generates eddy currents, generating a tripping repulsion force between the repulsion disk 33 and the trip coil 32. After the tripping repulsion force overcomes the magnetic force between the closing magnet 421 and the closing yoke 4112, the tripping repulsion force drives the moving contact assembly to move away from the stationary contact 21 along the first direction. During this process, the magnetic force between the tripping magnet 422 and the tripping yoke 412 can also further drive the moving contact assembly. Finally, the tripping magnet 422 and the tripping yoke 412 attract each other, keeping the contact mechanism in the tripped state.

[0115] like Figure 19As shown, when the contact mechanism is open, the opening magnet 422 and the opening yoke 412 are attracted to each other, keeping the moving contact assembly and the stationary contact 21 in a separated open state. When the opening coil 32 is energized, the repulsion disk 33 generates eddy currents, generating a closing repulsion force between the repulsion disk 33 and the closing coil 31. After the closing repulsion force overcomes the magnetic force between the opening magnet 422 and the opening yoke 412, the moving contact assembly is driven to move along the first direction toward the stationary contact 21. During this process, the magnetic force between the closing magnet 421 and the closing yoke 411 can also further drive the moving contact assembly. Finally, the closing magnet 421 and the closing yoke 411 are attracted to keep the contact mechanism in the closed state.

[0116] In addition, in this embodiment, the steady-state holding component may also include a steady-state elastic element 43 as in the first embodiment, the working principle of which is described in the first embodiment.

[0117] 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.

[0118] 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 mechanical switch, comprising a housing (1), a contact mechanism, and an electromagnetic drive assembly, wherein the contact mechanism comprises a stationary contact (21) and a moving contact assembly, the moving contact assembly comprising a moving contact plate (220) cooperating with the stationary contact (21), and the electromagnetic drive assembly comprising a closing coil (31), a opening coil (32), and a repulsion disk (33), the repulsion disk (33) being located between the closing coil (31) and the opening coil (32), wherein a closing repulsion force is generated between the closing coil (31) and the repulsion disk (33) after energization, and an opening repulsion force is generated between the opening coil (32) and the repulsion disk (33) after energization, and the moving contact assembly is driven by the repulsion disk (33) to move linearly to switch between the closing and opening positions. Its features are: The housing (1) includes a contact cavity (101) and a drive cavity (102) arranged along a first direction. The contact cavity (101) is provided with the stationary contact (21) and the moving contact plate (220). The drive cavity (102) is provided with the electromagnetic drive assembly. The moving contact assembly is at least partially slidably disposed in the contact cavity (101) and the drive cavity (102). The repulsion disk (33) located in the drive cavity (102) is fixed on the moving contact assembly. The repulsion disk (33) drives the moving contact assembly, causing the moving contact plate (220) to move linearly in the contact cavity (101) along the first direction.

2. The mechanical switch according to claim 1, characterized in that: The stationary contact (21) is fixed on the side wall of the contact cavity (101) away from the driving cavity (102). The closing coil (31) and the opening coil (32) are spaced apart along the first direction. The closing coil (31) is fixed on the side wall of the driving cavity (102) away from the contact cavity (101).

3. The mechanical switch according to claim 1, characterized in that: The housing (1) is provided with at least one set of contact mechanisms. Each set of contact mechanisms includes at least two stationary contacts (21) and one moving contact assembly. Two adjacent stationary contacts (21) in the same set of contact mechanisms are spaced apart in the second direction. The moving contact assembly includes a moving contact plate (220) and an insulating base (23). The moving contact plate (220) and the repulsion disk (33) are both disposed on the insulating base (23).

4. The mechanical switch according to claim 3, characterized in that: Each group of contact mechanisms includes at least three stationary contacts (21) spaced apart in a second direction and a moving contact assembly. The moving contact assembly includes at least two moving contact plates (220) spaced apart in a second direction, and each moving contact plate (220) has two ends that cooperate with two adjacent stationary contacts (21).

5. The mechanical switch according to claim 3, characterized in that: Each of the stationary contacts (21) includes a stationary contact plate (210), the stationary contact plate (210) is provided with at least one stationary contact point (211), and the two ends of the moving contact plate (220) are respectively provided with at least one moving contact point (221), and each moving contact point (221) corresponds to a stationary contact point (211).

6. The mechanical switch according to claim 5, characterized in that: In two adjacent sets of contact mechanisms, the two sets of moving contact plates (220) are arranged side by side in the third direction, and the stationary contact plates (210) in the two adjacent sets of contact mechanisms are arranged side by side in the third direction, or the two adjacent sets of stationary contact plates (210) are connected as one unit in the third direction.

7. The mechanical switch according to any one of claims 3-6, characterized in that: All moving contact plates (220) are mounted on the same insulating base (23) and are driven by the same electromagnetic drive assembly.

8. The mechanical switch according to claim 7, characterized in that: The insulating base (23) is provided with a partition (237), and two adjacent movable contact plates (220) are separated by the partition (237).

9. The mechanical switch according to claim 1, characterized in that: The moving contact assembly further includes an insulating base (23), which is slidably disposed in the contact cavity (101) and the driving cavity (102). The moving contact plate (220) is fixed to the portion of the insulating base (23) located in the contact cavity (101), and the repulsion disk (33) is fixed to the portion of the insulating base (23) located in the driving cavity (102).

10. The mechanical switch according to claim 9, characterized in that: The movable contact plate (220) is connected to the insulating seat (23) via a compression spring assembly (24). The relative movement of the movable contact plate (220) and the insulating seat (23) in a first direction can cause the compression spring assembly (24) to undergo elastic deformation.

11. The mechanical switch according to claim 9, characterized in that: The insulating base (23) includes a support plate (231) located inside the contact cavity (101). The support plate (231) has at least one pair of spaced-apart support sidewalls on one side and at least two guide posts (52) on the other side. The end of the guide post (52) away from the support plate (231) / moving contact plate (220) is located inside the drive cavity (102) for fixed connection with the repulsion disk (33).

12. The mechanical switch according to claim 10, characterized in that: The contact cavity (101) and the drive cavity (102) are separated by a partition (13). The partition (13) is provided with a coil mounting groove (14) and a guide hole (51). The trip coil (32) is disposed in the coil mounting groove (14) of the partition (13), and the guide post (52) slides through the guide hole (51).

13. The mechanical switch according to claim 1, characterized in that: The contact cavity (101) is also provided with a steady-state holding component. The steady-state holding component can provide magnetic force and / or elastic force to the moving contact component. When the moving contact component moves along the first direction, the steady-state holding component assists the repulsive disk (33) to drive the moving contact component. After the moving contact (22) moves into place, the steady-state holding component maintains the moving contact component in the closed position or the open position.

14. The mechanical switch according to claim 13, characterized in that: The steady-state holding assembly includes a closing magnet (421), a opening magnet (422), an opening yoke (412), and a closing yoke (411). The closing magnet (421) and the stationary contact (21) are disposed on the same side wall of the contact cavity (101). The opening magnet (422) and the closing magnet (421) are spaced apart in the contact cavity (101) along a first direction. The opening yoke (412) and the closing yoke (411) are both fixed on the moving contact assembly. When the moving contact assembly moves to the opening position, the opening yoke (412) can be attracted to the opening magnet (422). When the moving contact assembly moves to the closing position, the closing yoke (411) can be attracted to the closing magnet (421).

15. The mechanical switch according to claim 13, characterized in that: The steady-state holding assembly includes at least two steady-state elastic elements (43), each of which is connected at both ends to the moving contact assembly and the housing (1). All the steady-state elastic elements (43) are symmetrically arranged on both sides of the moving contact assembly. Driven by the moving contact assembly, the steady-state elastic elements (43) move between the closed stable position, the neutral position, and the open stable position. In the first direction, the neutral position is located between the closed stable position and the open stable position. The steady-state elastic element (43) is in the neutral position, the central axis of the steady-state elastic element (43) is perpendicular to the first direction, the steady-state elastic element (43) is stationary in the closed stable position, the central axis of each steady-state elastic element (43) forms an angle with the second direction to provide closing holding force for the moving contact assembly in the closed position, the steady-state elastic element (43) is stationary in the open stable position, the central axis of each steady-state elastic element (43) forms an angle with the second direction to provide opening holding force for the moving contact assembly in the open position.

16. The mechanical switch according to claim 15, characterized in that: The contact cavity (101) is provided with at least one pair of receiving grooves (16), and each of the steady elastic elements (43) is correspondingly assembled in one of the receiving grooves (16) and moves within the receiving grooves (16).

17. The mechanical switch according to claim 1, characterized in that: The contact cavity (101) is also equipped with an arc extinguishing system, which extinguishes the electric arc generated by the contact mechanism during disconnection.

Images