A reversible ac encapsulated contactor

Abstract

This invention discloses a reversible AC encapsulated contactor, including an interlocking device comprising: a housing, and a left interlocking mechanism and a right interlocking mechanism mounted on the housing; the left interlocking mechanism includes: a left moving plate and a first transmission plate, the left moving plate being connected to the first transmission plate, the first transmission plate being connected to a corresponding contactor contact support, the first transmission plate moving back and forth with the contact support and driving the left moving plate to move linearly up and down; the right interlocking mechanism includes: a right moving plate and a second transmission plate, the right moving plate being connected to the second transmission plate, the second transmission plate being connected to another set of contactor contact supports, the right moving plate being hinged to a baffle, the second transmission plate moving upward with the contact support causing the baffle to move laterally; the left and right interlocking mechanisms form a mechanical interlocking structure. This invention effectively achieves the technical effect of interlocking two contactors to prevent accidental operation, and is highly practical.

Description

Technical Field

[0001] This invention relates to the field of low-voltage electrical technology, specifically to a reversible AC encapsulated contactor. Background Technology

[0002] AC contactors are core components in low-voltage power distribution and industrial control. Traditional open-type AC contactor coils need to be energized for a long time to maintain engagement, resulting in high power consumption, significant coil temperature rise, and easy insulation aging. The exposed structure is susceptible to dust, moisture, and corrosive media, leading to prominent problems such as core corrosion and contact oxidation, and poor reliability in harsh environments.

[0003] To reduce holding power consumption, existing reversible contactors are constructed by mechanically interlocking two ordinary contactors. However, this structure has drawbacks such as numerous components, susceptibility to wear and jamming, short mechanical life, and insufficient vibration resistance. Furthermore, under frequent forward and reverse operation, the contacts are subjected to large inrush currents, exacerbating arc erosion and easily causing increased contact resistance and adhesion. Separate placement of the two contactors occupies significant cabinet space, hindering equipment miniaturization and integration. It is also unsuitable for the demanding operating conditions required in new energy and chemical industries.

[0004] In summary, the present invention aims to address the following issues in reversible AC contactors: due to their exposed external structure, the contactor's lifespan is easily affected by dust and moisture. Furthermore, the numerous mechanical locking components in reversible AC contactors are prone to wear and jamming, resulting in short mechanical lifespan and insufficient vibration resistance, which in turn affects the service life. This also hinders miniaturization and integration, making it unsuitable for the demanding operating conditions in new energy and chemical industries. Summary of the Invention

[0005] The purpose of this invention is to provide a reversible AC encapsulated contactor, thereby solving at least one technical problem existing in the prior art. It addresses the technical problems of existing reversible AC contactors, such as external exposure making the structure susceptible to dust and moisture affecting the contactor's service life, complex assembly, short lifespan, insufficient vibration resistance, inability to be used in harsh environments, and insufficient operational reliability.

[0006] To achieve the above objectives, two encapsulated AC contactors are joined together with a mechanical interlock, and then potted as a whole. The lower electromagnetic system is sealed to prevent colloid leakage and reduce magnetic leakage. The mechanical interlock uses a gear drive, which satisfies the characteristics of simple structure, reliable operation, and small size.

[0007] The specific technical solution adopted by the present invention is as follows: This application provides a reversible AC encapsulated contactor, including an interlocking device, which includes: a housing, a left interlocking mechanism and a right interlocking mechanism, wherein the left interlocking mechanism and the right interlocking mechanism are both mounted on the housing;

[0008] The left interlocking mechanism includes: a left moving plate and a first transmission plate. The left moving plate is connected to the first transmission plate. The first transmission plate is supported and connected to the corresponding contactor contact. The first transmission plate moves back and forth with the contact support and drives the left moving plate to move linearly in the up and down direction.

[0009] The right interlocking mechanism includes: a right moving plate and a second transmission plate. The right moving plate is connected to the second transmission plate. The second transmission plate is connected to another set of contactor contact supports. The right moving plate is hinged to the baffle through a connecting rod. When the second transmission plate moves upward with the contact support, it drives the right moving plate to move upward synchronously and moves the baffle laterally.

[0010] The left and right interlocking mechanisms form a mechanical interlock structure. When the first transmission plate moves upward to its limit position, the left moving plate reduces the range of movement of the right moving plate, restricting the engagement of the right contactor. When the second transmission plate moves upward and the baffle slides laterally to its limit position, the baffle reduces the range of movement of the left moving plate and the first transmission plate, restricting the engagement of the left contactor, thus achieving interlocking between the two contactors to prevent accidental operation.

[0011] Furthermore, the left interlocking mechanism also includes: a left gear, and a toothed structure is provided on the left moving plate. The left gear meshes with the left moving plate, and the left gear is synchronously driven to rotate during the movement of the left moving plate.

[0012] The right interlocking mechanism further includes: a right gear; a toothed structure is provided on the right moving plate; the right gear meshes with the right moving plate; during the movement of the right moving plate, the right gear is driven to rotate synchronously.

[0013] The housing consists of two symmetrically oppositely assembled shells, and the left and right gears are mounted on the housings via a connecting shaft.

[0014] Furthermore, the left moving plate and the right moving plate are respectively arranged in the left limiting groove and the right limiting groove of the housing.

[0015] Furthermore, the baffle is arranged in a baffle guide groove on the inner wall of the housing, so that the baffle moves linearly in the left and right direction.

[0016] Furthermore, mounting slots are respectively provided on the left and right moving plates, and the first and second transmission plates are respectively installed in the mounting slots, so that the first and second transmission plates move synchronously with the left and right moving plates.

[0017] Furthermore, the mounting groove is one of a rectangular groove or a dovetail groove.

[0018] Furthermore, a guide groove is formed on the inner wall of the housing, and guide bosses are provided on the first transmission plate and the second transmission plate, with the guide bosses matching the guide grooves.

[0019] Furthermore, the housing has through holes, and both the first transmission plate and the second transmission plate are provided with connecting posts. The two connecting posts pass through the through holes and are respectively engaged in the engaging parts of the two contactor contact support sidewalls.

[0020] Furthermore, when the second transmission plate moves to its limit position, the gap between the baffle and the left moving plate is less than or equal to 5 mm.

[0021] Furthermore, the interlocking device is connected to the contactor's contacts via a slot in the upper shell of the contactor, and the two contactors, together with the interlocking device, are encapsulated as a single unit by an external encapsulation shell.

[0022] Furthermore, the electromagnetic system of the contactor is a permanent magnet electromagnetic system.

[0023] The beneficial effects of this embodiment are:

[0024] 1. The gear meshing transmission structure ensures smooth and reliable operation with high interlocking precision. This invention abandons the traditional simple fork-type and jamming-type interlocking structures and adopts a transmission method in which the moving plate tooth structure meshes with the gear. Combined with the precise guiding structure of the housing limit groove, guide groove, and guide boss, the transmission plate and moving plate move in a straight line throughout the entire process, with small transmission gaps, no movement deviation, and no jamming faults.

[0025] 2. The interlocking device of this invention adopts a symmetrical modular structure, which is integrated into the housing. It does not require complex external auxiliary parts, resulting in a simplified structure and compact size. Furthermore, the assembly method, which uses a transmission plate connecting column with contact head support and a plug-in mounting slot for matching and fixing, enables rapid alignment and assembly of the interlocking device and the contactor.

[0026] 3. The integrated structure of two encapsulated contactors and interlocking devices is adopted and then potted as a whole, which completely changes the traditional arrangement of exposed contactors. The two contactors and interlocking devices are sealed as a whole by the external encapsulation shell, which can effectively isolate the intrusion of external dust, water vapor, oil and corrosive media. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the internal structure of the interlocking device of a reversible AC encapsulated contactor according to the present invention;

[0028] Figure 2 This is a diagram showing the upward movement of the first transmission plate of the interlocking device for a reversible AC encapsulated contactor according to the present invention.

[0029] Figure 3 This is a diagram showing the upward movement of the second transmission plate of the interlocking device for a reversible AC encapsulated contactor according to the present invention.

[0030] Figure 4 This is a schematic diagram of the structure of the left moving plate and the first transmission plate of the interlocking device of a reversible AC encapsulated contactor according to the present invention;

[0031] Figure 5 This is a schematic diagram of the interlocking device of the reversible AC encapsulated contactor of the present invention, showing the structure of the right moving plate and the second transmission plate.

[0032] Figure 6 This is a structural diagram of the interlocking device housing of a reversible AC encapsulated contactor according to the present invention;

[0033] Figure 7 This is a schematic diagram of the internal structure of the interlocking device housing of a reversible AC encapsulated contactor according to the present invention;

[0034] Figure 8 This is a side view of the interlocking device of a reversible AC encapsulated contactor according to the present invention;

[0035] Figure 9 This is a structural diagram of the upper shell of a reversible AC encapsulated contactor according to the present invention;

[0036] Figure 10 This is a contact support structure diagram of a reversible AC encapsulated contactor according to the present invention;

[0037] Figure 11 This is a schematic diagram of the second moving plate structure of the interlocking device of a reversible AC encapsulated contactor according to the present invention;

[0038] Figure 12 This is a schematic diagram of the first transmission plate or the second transmission structure of the interlocking device of a reversible AC encapsulated contactor according to the present invention;

[0039] Figure 13 This is a partial structural diagram of the interlocking device and contact support connection of a reversible AC encapsulated contactor according to the present invention;

[0040] Figure 14 This is an internal structural diagram of the interlocking device of a reversible AC encapsulated contactor according to the present invention;

[0041] Figure 15 This is an internal structural diagram of a reversible AC encapsulated contactor according to the present invention;

[0042] Explanation of reference numerals in the attached drawings: 1. Housing; 2. Left gear; 3. Left moving plate; 4. First transmission plate; 5. Right gear; 6. Right moving plate; 7. Second transmission plate; 8. Connecting rod; 9. Baffle; 10. Left limiting groove; 11. Right limiting groove; 12. Baffle guide groove; 13. Guide groove; 14. Guide boss; 15. Through hole; 16. Connecting post; 17. Snap-fit ​​part; 18. Contactor upper housing; 19. Slot; 20. Connecting shaft; 21. Contact support. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0044] It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the present invention or simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0045] Furthermore, in the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0046] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0047] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented without certain specific details. In some instances, methods, means, components, and circuits well-known to those skilled in the art have not been described in detail in order to highlight the main points of this application.

[0048] This embodiment discloses a reversible AC encapsulated contactor, mainly addressing the technical problems of existing reversible AC contactors, such as susceptibility to dust and moisture corrosion due to exposed structure, cumbersome assembly, poor shock resistance, weak adaptability to harsh environments, and insufficient reliability of mechanical interlocking. The core of this invention adopts an integrated structural design combining dual contactor splicing, built-in gear and rack mechanical interlocking, overall potting sealing, and a permanent magnet sealed electromagnetic system. This results in a compact overall structure, smooth transmission, precise interlocking, and a high protection level, enabling stable operation under harsh conditions such as dust, humidity, and vibration for extended periods.

[0049] This embodiment provides a reversible AC encapsulated contactor, comprising two symmetrically arranged encapsulated contactors and an interlocking device installed between them. The interlocking device is connected to the contacts of the two contactors via slots in the upper shell of the contactors. The two contactors, together with the interlocking device, are encapsulated as a single unit by an external encapsulation shell, making the interlocking transmission structure completely internally sealed. This completely eliminates the traditional exposed interlocking structure of contactors, effectively isolating them from external dust, moisture, oil, and corrosive media, significantly improving the overall protection level and service life. The contactor's electromagnetic system adopts a permanent magnet electromagnetic system, which features stable operation, fast response speed, low electromagnetic loss, and strong anti-interference capability, further enhancing the overall reliability of the device.

[0050] like Figure 1-15 As shown, the interlocking device includes: a housing 1, a left interlocking mechanism and a right interlocking mechanism, both of which are mounted on the housing 1; wherein the housing 1 is formed by splicing two symmetrically oppositely assembled shells, and the overall structure is symmetrical and regular, which facilitates alignment and assembly.

[0051] The left interlocking mechanism includes: a left gear 2, a left moving plate 3, and a first transmission plate 4. The left moving plate 3 is connected to the first transmission plate 4, and the first transmission plate 4 is connected to the corresponding contactor contact support 21. The first transmission plate 4 moves back and forth with the contact support and drives the left moving plate 3 to move linearly up and down. The left moving plate 3 is provided with a toothed structure. The left gear 2 and the left moving plate 3 mesh with each other. During the movement of the left moving plate 3, the left gear 2 is driven to rotate synchronously.

[0052] The right interlocking mechanism includes: a right gear 5, a right moving plate 6, and a second transmission plate 7. The right moving plate 6 is connected to the second transmission plate 7, and the second transmission plate 7 is connected to another set of contactor contacts. The right moving plate 6 is hinged to a baffle 9 via a connecting rod 8. When the second transmission plate 7 moves upward with the contact support, it drives the right moving plate 6 to move upward synchronously and moves the baffle 9 laterally. The right moving plate 6 is provided with a toothed structure, and the right gear 5 meshes with the right moving plate 6. During the movement of the right moving plate 6, the right gear 5 is driven to rotate synchronously.

[0053] The left and right interlocking mechanisms form a mechanical interlock structure. When the first transmission plate 4 moves upward to its limit position, the left moving plate 3 reduces the range of movement of the right moving plate 6, restricting the engagement of the right contactor. When the second transmission plate 7 moves upward and the baffle 9 slides laterally to its limit position, the baffle 9 reduces the range of movement of the left moving plate 3 and the first transmission plate 4, restricting the engagement of the left contactor, thus achieving interlocking between the two contactors to prevent accidental operation.

[0054] The housing 1 consists of two symmetrically oppositely assembled outer shells, and the left gear 2 and right gear 5 are mounted on the housing 1 via a connecting shaft 20.

[0055] The left moving plate 3 and the right moving plate 6 are each provided with a mounting groove. The mounting groove can be a rectangular groove or a dovetail groove structure. In this embodiment, a groove is used. The left end of the left moving plate 3 is connected to the first transmission plate 4 through the groove, and the right end of the left moving plate 3 is close to the inner wall of the housing 1 and is limited by the inner wall. The first transmission plate 4 and the second transmission plate 7 are respectively assembled and fixed in the mounting grooves of the left moving plate 3 and the right moving plate 6, so that the first transmission plate 4 and the left moving plate 3, and the second transmission plate 7 and the right moving plate 6 form an integral linkage structure to ensure that the transmission plate and the moving plate move synchronously. The inner wall of the housing 1 is provided with a guide groove 13, and the first transmission plate 4 and the second transmission plate 7 are respectively provided with guide bosses 14. The guide bosses 14 and the guide grooves 13 match each other to further limit and guide the movement trajectory of the transmission plates, avoid deviation or skew during long-term operation, and improve the stability of the structure and its vibration resistance.

[0056] The housing 1 has a through hole 15. The first transmission plate 4 and the second transmission plate 7 are provided with connecting posts 16. The connecting posts 16 pass through the through hole of the housing 1 and are engaged in the engaging part 17 of the corresponding contactor contact support side wall, so as to realize the rigid connection between the interlocking device and the contactor moving part, ensuring that the reciprocating displacement of the contact support can be accurately transmitted to the interlocking mechanism, and the transmission is without lag or play.

[0057] The baffle 9 is slidably arranged in the baffle guide groove 12 on the inner wall of the housing 1, so that the baffle 9 can only slide linearly along the left and right directions of the housing 1, ensuring that the lateral limiting action is accurate and reliable.

[0058] like Figure 1-15 As shown, the left moving plate 3 and the right moving plate 6 are respectively arranged in the left limiting groove 10 and the right limiting groove 11 of the housing 1.

[0059] like Figure 1-15 As shown, the baffle 9 is arranged in the baffle guide groove 12 on the inner wall of the housing 1, so that the baffle 9 can move linearly in the left and right direction.

[0060] like Figure 1-15 As shown, mounting slots are respectively opened on the left moving plate 3 and the right moving plate 6, and the first transmission plate 4 and the second transmission plate 7 are respectively installed in the mounting slots, so that the first transmission plate 4 and the second transmission plate 7 move synchronously with the left moving plate 3 and the right moving plate 6.

[0061] like Figure 1-15 As shown, a guide groove 13 is provided on the inner wall of the housing 1, and guide bosses 14 are provided on the first transmission plate 4 and the second transmission plate 7, and the guide bosses 14 are matched with the guide grooves 13.

[0062] like Figure 1-15 As shown, the housing 1 has a through hole, and the first transmission plate 4 and the second transmission plate 7 are both provided with connecting posts 16. The two connecting posts 16 pass through the through hole and are respectively engaged in the engaging parts 17 of the two contactor contact support sidewalls.

[0063] like Figure 1-15 As shown, when the second transmission plate 7 moves to the limit position, the gap between the baffle 9 and the left moving plate 3 is less than or equal to 5mm.

[0064] Working Process: This invention forms a purely mechanical bidirectional interlocking structure through the cooperation of the left and right interlocking mechanisms. When the left contactor engages, the contact support drives the first transmission plate 4 to move upward, driving the left moving plate 3 to move linearly upward along the left limiting groove 10. When the first transmission plate 4 reaches the limit engagement position, the inner wall of the top of the housing 1 provides a limit, or a limiting block can be installed on the inner wall of the housing 1 for this purpose. The upward movement of the left moving plate 3 occupies and reduces the upward movement range of the right moving plate 6, mechanically limiting the movement stroke of the right contactor, restricting the engagement of the right contactor, and preventing the left and right contactors from operating simultaneously.

[0065] When the right contactor engages, the right contact supports and drives the second transmission plate 7 upward, which in turn drives the right moving plate 6 to move upward synchronously along the right limiting groove 11. During its upward movement, the right moving plate 6 pulls the baffle 9 to slide laterally along the guide groove via the connecting rod 8. When the second transmission plate 7 reaches its limit position, the baffle 9 slides laterally to the locking position. At this time, the gap between the baffle 9 and the left moving plate 3 is controlled within 5mm. The baffle 9 can be limited by the inner wall of the left side of the housing 1. By limiting the movement between the baffle 9 and the inner wall of the housing 1, the left moving plate 3 is directly below the baffle 9. The upward movement range of the left moving plate 3 is very small, which can reduce the upward movement range of the left moving plate 3 and the first transmission plate 4, restricting the engagement of the left contactor. This achieves bidirectional mechanical interlocking of the two reversible contactors, completely eliminating malfunctions and double engagement short circuit faults.

[0066] When the contactor is de-energized and resets, the contacts on both sides support downward reset, which drives the corresponding transmission plate and moving plate to reset synchronously. The gear rotates in the opposite direction, the baffle 9 retracts in conjunction with the connecting rod 8, the interlock limit state is released, and the two contactors return to standby state.

[0067] This embodiment effectively solves the problems of traditional reversible contactors, such as easy corrosion due to exposure, short lifespan, complex assembly, poor shock resistance, and low reliability in harsh environments, through the combination of an overall potting and sealing structure, an internal gear-type interlocking transmission structure, and a sealed permanent magnet electromagnetic system. The overall structure is simple and compact, easy to assemble, has high interlocking accuracy, stable operation, and excellent protection performance, making it suitable for various harsh industrial application scenarios.

[0068] The interlocking device is connected to the contactor's contacts via a slot 19 on the upper housing 18 of the contactor. The two contactors, together with the interlocking device, are encapsulated as a single unit by an external encapsulation shell.

[0069] The electromagnetic system of the contactor is a permanent magnet electromagnetic system.

[0070] The beneficial effects of this embodiment are:

[0071] 1. Gear meshing transmission structure, smooth and reliable operation, high interlocking precision. This invention abandons the traditional simple fork-type and jamming-type interlocking structures, and adopts a transmission method of gear meshing with the toothed structure of the moving plate. Combined with the precise guiding structure of the housing 1 limit groove, guide groove 13, and guide boss, the transmission plate and moving plate move linearly throughout the entire process, with small transmission gaps, no movement deviation, and no jamming faults. At the same time, through the precise structural design of the baffle 9 with a limit gap ≤5mm, bidirectional precise mechanical interlocking is achieved, completely eliminating safety hazards such as power short circuits and equipment burnout caused by the simultaneous engagement of two reversible contactors. It solves the problems of motion jamming, limit failure, and high probability of malfunction in existing interlocking structures, greatly improving the reliability of contactor operation.

[0072] 2. The integrated potting and sealing structure provides strong resistance to environmental interference and significantly extends the service life of the equipment.

[0073] This invention employs an integrated structure where two encapsulated contactors are joined with an interlocking device and then encapsulated as a whole. This completely changes the traditional exposed arrangement of contactors. The two contactors and the interlocking device are sealed together by an external encapsulation shell, effectively isolating them from external dust, moisture, oil, and corrosive media. Simultaneously, the lower electromagnetic system of the contactor adopts a sealed structure design, which not only prevents leakage of the potting compound, ensuring product molding accuracy, but also reduces electromagnetic leakage. This avoids the problems of dust accumulation, moisture oxidation, component corrosion, and jamming inherent in traditional exposed contactors, significantly improving the overall weather resistance of the contactor and making it suitable for harsh industrial conditions such as high temperature, high humidity, and high dust levels, effectively extending the overall service life of the equipment.

[0074] 3. Modular integrated design, simple and compact structure, high assembly efficiency.

[0075] The interlocking device of this invention adopts a symmetrical modular structure, which is integrated into the housing 1. It does not require complex external auxiliary parts, resulting in a simplified structure and compact size. Furthermore, through the assembly method of connecting the transmission plate to the contact head and matching and fixing with the plug-in mounting slot, rapid alignment and assembly of the interlocking device and the contactor are achieved. The assembly process is simple and the positioning is precise, effectively solving the technical problems of scattered parts, cumbersome assembly, difficulty in controlling assembly accuracy, and low production efficiency in traditional reversible contactor interlocking structures. This facilitates large-scale mass production assembly.

[0076] 4. Strong structural stability and excellent seismic and impact resistance.

[0077] This invention adopts an integrated potting and molding structure. Internal core components such as gears, moving plates, baffles, and transmission plates are all tightly fixed and limited by limiting grooves, guiding structures, and snap-fit ​​structures, with no loose or moving parts. The equipment has high overall rigidity, effectively resisting structural displacement and component loosening caused by equipment operation, vibration, and external impacts. It solves the defects of traditional exposed interlocking structures, such as insufficient seismic resistance, easy component displacement, and interlock failure due to long-term vibration, significantly improving the equipment's operational stability and adaptability to operating conditions.

[0078] 5. Equipped with a permanent magnet electromagnetic system, its overall performance is superior.

[0079] The contactor of this invention adopts a permanent magnet electromagnetic system, combined with an integrated sealed potting structure and a high-precision mechanical interlocking structure. While ensuring the stability and reliability of the interlocking protection function, it effectively reduces electromagnetic loss and leakage magnetic interference, improves the response speed and stability of the contactor's engagement and disengagement, balances energy saving and working accuracy, further optimizes the overall performance of the product, and is suitable for various electrical control scenarios with high precision and high reliability requirements.

[0080] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A reversible AC encapsulated contactor, comprising an interlocking device, characterized in that, The interlocking device includes: a housing (1), a left interlocking mechanism and a right interlocking mechanism, both of which are mounted on the housing (1); The left interlocking mechanism includes: a left moving plate (3) and a first transmission plate (4). The left moving plate (3) is connected to the first transmission plate (4). The first transmission plate (4) is connected to the corresponding contactor contact support. The first transmission plate (4) moves back and forth with the contact support and drives the left moving plate (3) to move linearly in the up and down direction. The right interlocking mechanism includes: a right moving plate (6) and a second transmission plate (7). The right moving plate (6) is connected to the second transmission plate (7). The second transmission plate (7) is connected to another set of contactor contact supports. The right moving plate (6) is hinged to the baffle (9) through a connecting rod (8). When the second transmission plate (7) moves upward with the contact support, it drives the right moving plate (6) to move upward synchronously and moves the baffle (9) laterally. The left interlocking mechanism and the right interlocking mechanism form a mechanical interlocking structure. When the first transmission plate (4) moves upward to the limit position, the left moving plate (3) reduces the range of movement of the right moving plate, restricting the engagement of the right contactor. When the second transmission plate (7) moves upward and the baffle (9) slides laterally to the limit position, the baffle (9) reduces the range of movement of the left moving plate (3) and the first transmission plate (4), restricting the engagement of the left contactor, thus achieving interlocking between the two contactors to prevent accidental operation.

2. The reversible AC encapsulated contactor according to claim 1, characterized in that: The left interlocking mechanism also includes: a left gear (2), and a toothed structure on the left moving plate (3). The left gear (2) meshes with the left moving plate (3). During the movement of the left moving plate, the left gear is driven to rotate synchronously. The right interlocking mechanism further includes: a right gear (5), and a toothed structure on the right moving plate (6). The right gear (5) meshes with the right moving plate (6), and the right gear rotates synchronously during the movement of the right moving plate. The housing (1) consists of two symmetrically oppositely assembled outer shells, and the left gear (2) and right gear (5) are mounted on the housing (1) via a connecting shaft (20).

3. The reversible AC encapsulated contactor according to claim 1, characterized in that: The left moving plate (3) and the right moving plate (6) are respectively arranged in the left limiting groove (10) and the right limiting groove (11) of the shell.

4. The reversible AC encapsulated contactor according to claim 1, characterized in that: The baffle (9) is arranged in the baffle guide groove (12) on the inner wall of the housing, so that the baffle (9) moves linearly in the left and right direction.

5. The reversible AC encapsulated contactor according to claim 1, characterized in that: The left and right moving plates are respectively provided with mounting slots, and the first and second transmission plates are respectively installed in the mounting slots, so that the first and second transmission plates move synchronously with the left and right moving plates.

6. The reversible AC encapsulated contactor according to claim 5, characterized in that: The mounting groove (12) is one of a rectangular groove or a dovetail groove.

7. The reversible AC encapsulated contactor according to claim 1, characterized in that: The inner wall of the housing (1) is provided with a guide groove (13), and the first transmission plate and the second transmission plate are provided with guide bosses (14), which match the guide groove.

8. The reversible AC encapsulated contactor according to claim 1, characterized in that: The housing has a through hole (15), and the first transmission plate (4) and the second transmission plate (7) are each provided with a connecting post (16). The two connecting posts (16) pass through the through hole and are respectively engaged in the engaging part (17) of the two contactor contact support sidewalls.

9. The reversible AC encapsulated contactor according to claim 1, characterized in that: When the second transmission plate moves to the limit position, the gap between the baffle (9) and the left moving plate is less than or equal to 5mm.

10. The reversible AC encapsulated contactor according to any one of claims 1-9, characterized in that: The interlocking device is connected to the contact support (21) of the contactor through the slot (19) opened in the upper shell (18) of the contactor. The two contactors and the interlocking device are encapsulated together by the outer encapsulation shell.

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