Alternating current contactor convenient to maintain

Abstract

The utility model relates to the technical field of alternating current contactors, and discloses an alternating current contactor convenient to maintain, which comprises a middle cover and an upper cover, two sides of the middle cover are fixedly connected with fixing blocks, the surfaces of the fixing blocks are provided with jacks, the fixing blocks are internally provided with sliding cavities, the bottom wall of each sliding cavity is provided with two sliding grooves, and the sliding grooves are communicated with the jacks. The sliding grooves are communicated with the inserting holes, through holes are formed in the surfaces of the fixing blocks and communicated with the sliding cavities, connecting bases matched with the inserting holes are fixedly connected to the two sides of the upper cover, fixing mechanisms used for fixing the connecting bases are installed in the sliding cavities, and limiting assemblies are fixedly connected to the surfaces of the fixing blocks. According to the utility model, all parts of the shell are connected in an inserting manner instead of a screw fixing manner, so that the situation that the shell or screws are damaged due to too tight connection can be avoided, meanwhile, the shell can be quickly disassembled, the maintenance cost is reduced, the maintenance time is shortened, and the operation is simple, quick and convenient.

Description

Technical Field

[0001] This utility model relates to the field of AC contactor technology, specifically to an AC contactor that is easy to maintain. Background Technology

[0002] An AC contactor is an electrical device widely used in power systems and industrial automation. It primarily uses main contacts to open and close circuits, while auxiliary contacts execute control commands. It is a type of low-voltage switching device, mainly used for frequently connecting and disconnecting AC / DC main circuits and high-capacity control circuits (such as motor control circuits) over long distances. AC contactors achieve contact closure and opening through the combination of electromagnetic force and spring reaction force.

[0003] Patent CN218333622U discloses an AC contactor, including an AC contactor body. A mounting plate is fixedly connected to the back of the AC contactor body. A constraint plate is provided on the upper side of the AC contactor body, and the constraint plate has horizontally spaced slots inside. The positions of these slots correspond to the positions of the wires. Limiting blocks are symmetrically arranged inside the slots, and the side of the limiting blocks closest to each other has an arc-shaped structure. The bottom end of the constraint plate is provided with a buffer mechanism. This technology, by incorporating a vertical rod and a sleeve rod, utilizes the elasticity of the spring to buffer and absorb the pulling force when workers accidentally pull on the wires, thus protecting the wires. The limiting blocks and slots facilitate the arrangement of the wires, effectively preventing tangling after connection.

[0004] However, the above technology still has the following problems:

[0005] During use, the internal mechanical and electronic components of an AC contactor can also be damaged. The various parts of the contactor's housing are secured with screws, making installation and disassembly relatively cumbersome and time-consuming. This cumbersome securing method can increase maintenance costs and time, especially in applications requiring frequent contactor replacement or maintenance. Furthermore, screws may loosen over time due to vibration, temperature changes, and other factors, leading to loose housing connections and affecting the contactor's performance and safety. Additionally, excessive force during screw tightening can damage the housing or the screws themselves. Utility Model Content

[0006] In view of the shortcomings of the existing technology, this utility model provides an AC contactor that is easy to maintain, and the top cover can be quickly disassembled to repair the mechanical parts and electronic components inside the AC contactor.

[0007] This utility model provides the following technical solution: an AC contactor that is easy to maintain, including a middle cover and a top cover. Fixing blocks are fixedly connected to both sides of the middle cover. Insertion holes are opened on the surface of the fixing blocks. A sliding cavity is opened inside the fixing blocks. Two sliding grooves are opened on the bottom wall of the sliding cavity. The sliding grooves are connected to the insertion holes. Through holes are opened on the surface of the fixing blocks. Connecting seats adapted to the insertion holes are fixedly connected to both sides of the top cover. A fixing mechanism for fixing the connecting seats is installed inside the sliding cavity. Limiting components are fixedly connected to the surface of the fixing blocks.

[0008] Furthermore, the connecting seat includes an L-shaped insert fixedly connected to the side of the upper cover. The L-shaped insert matches the insertion hole, and two parallel grooves are formed on the L-shaped insert, which are adapted to two sliding grooves.

[0009] Furthermore, the fixing mechanism includes two slide rods fixedly connected to the inner wall of the slide cavity, a slide plate slidably connected to the slide rods, the slide plate slidably connected to the slide cavity, two limiting blocks adapted to the slide groove fixedly connected to the lower surface of the slide plate, a push plate fixedly connected to the side of the slide plate, and a spring fixedly connected to the surface of the slide plate, the upper end of the spring being fixedly connected to the inner wall of the slide cavity.

[0010] Furthermore, the lower end of the limiting block is provided with a chamfer.

[0011] Furthermore, the limiting component includes two rotating blocks fixedly connected to the surface of the fixed block, a rotating shaft rotatably connected between the two rotating blocks, a railing fixedly connected to the rotating shaft, and a U-shaped pipe clamp fixedly connected to the fixed block.

[0012] Furthermore, the number of fixing mechanisms and limiting components provided on the fixing block is any one to four, and they are symmetrically arranged about both sides of the fixing block.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This easy-to-maintain AC contactor uses a plug-in connection to connect the various parts of the housing, instead of using screws for fixing. This avoids damage to the housing or screws caused by overly tight connections. At the same time, it also allows for quick disassembly of the housing, reducing maintenance costs and time. It is simple, quick and convenient to operate. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the entire utility model;

[0016] Figure 2 This is an exploded view of the entire utility model;

[0017] Figure 3This is a cross-sectional three-dimensional structural diagram of the fixing block of this utility model;

[0018] Figure 4 for Figure 3 Enlarged view of point A above;

[0019] Figure 5 for Figure 3 Enlarged view of point B above.

[0020] In the diagram: 1. Middle cover; 2. Top cover; 3. Fixing block; 4. Insertion hole; 5. Sliding cavity; 6. Sliding groove; 7. Through hole; 8. L-shaped insertion rod; 9. Groove; 10. Sliding rod; 11. Sliding plate; 12. Limiting block; 13. Push plate; 14. Spring; 15. Chamfer; 16. Rotating block; 17. Rotating shaft; 18. Railing; 19. U-shaped pipe clamp. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Please see Figures 1 to 5 An easy-to-maintain AC contactor includes a middle cover 1 and an upper cover 2. Fixing blocks 3 are fixedly connected to both sides of the middle cover 1. The surface of the fixing blocks 3 is provided with insertion holes 4. The interior of the fixing blocks 3 is provided with a sliding cavity 5. The bottom wall of the sliding cavity 5 is provided with two sliding grooves 6, which are connected to the insertion holes 4. The surface of the fixing blocks 3 is provided with through holes 7, which are connected to the sliding cavity 5. Connecting seats adapted to the insertion holes 4 are fixedly connected to both sides of the upper cover 2. A fixing mechanism for fixing the connecting seats is installed inside the sliding cavity 5. A limit component is fixedly connected to the surface of the fixing blocks 3.

[0023] The easy-to-maintain AC contactor in this utility model has a similar structure to existing AC contactors, such as the AC contactor disclosed in patent CN218333622U. The main improvement of this utility model is that it uses a plug-in connection method to connect the various parts of the housing, instead of using screws for fixing. This avoids damage to the housing or screws due to overly tight connections, and also allows for quick disassembly of the housing, reducing maintenance costs and time. Figures 1 to 5As shown, the easy-to-maintain AC contactor of this utility model, when in use, push the fixing mechanism upward and use the limiting component to limit the position of the fixing mechanism. Then, align the connecting seat on the upper cover 2 with the socket 4 on the fixing block 3 and slide it into the socket 4. Release the limitation component on the fixing mechanism, so that the fixing mechanism moves downward along the sliding cavity 5, which facilitates the connection of the connecting seat, thereby limiting and fixing the connecting seat, and thus fixing the upper cover 2. The upper cover 2 can be quickly removed by reversing the operation, so as to repair and replace the mechanical parts and electronic components inside the middle cover 1.

[0024] like Figure 2 As shown, the connecting seat includes an L-shaped insert 8 fixedly connected to the side of the upper cover 2. The L-shaped insert 8 matches the insertion hole 4. Two parallel grooves 9 are formed on the L-shaped insert 8, and the two grooves 9 are adapted to the two sliding grooves 6.

[0025] Specifically, the L-shaped insert 8 is used to connect with the insertion hole 4, so that the upper cover 2 is initially connected with the middle cover 1. The groove 9 is used to connect with the fixing mechanism, so that the fixing mechanism slides into the groove 9, so that the L-shaped insert 8 cannot move inside the insertion hole 4, thereby fixing the connecting seat and the upper cover 2.

[0026] like Figure 4 As shown, the fixing mechanism includes two slide rods 10 fixedly connected to the inner wall of the slide cavity 5. A slide plate 11 is slidably connected to the slide rods 10. The slide plate 11 is slidably connected to the slide cavity 5. Two limiting blocks 12 adapted to the slide groove 6 are fixedly connected to the lower surface of the slide plate 11. A push plate 13 is fixedly connected to the side of the slide plate 11. A spring 14 is fixedly connected to the surface of the slide plate 11. The upper end of the spring 14 is fixedly connected to the inner wall of the slide cavity 5.

[0027] Specifically, pushing the push plate 13 causes the slide plate 11 to move upward along the direction of the two slide rods 10. The spring 14 is compressed and stores energy. The limiting block 12 moves upward in the slide groove 6 along with the slide plate 11 until the lower end of the limiting block 12 is far away from the inside of the groove 9. This cancels the fixing effect on the connecting seat, thereby quickly removing the top cover 2 from the middle cover 1. The top cover 2 can be quickly installed by following the reverse operation.

[0028] like Figure 4 As shown, the lower end of the limiting block 12 is provided with a chamfer 15.

[0029] Specifically, by using the chamfer 15, when the L-shaped plug 8 is inserted into the socket 4, the front end of the L-shaped plug 8 will exert a force on the chamfer 15, thereby promoting the upward movement of the limiting block 12 until the L-shaped plug 8 is fully attached to the socket 4. During the process of the limiting block 12 falling down again, the chamfer 15 also facilitates a part of the limiting block 12 to enter the interior of the groove 9.

[0030] like Figure 5 As shown, the limiting component includes two rotating blocks 16 fixedly connected to the surface of the fixed block 3, a rotating shaft 17 rotatably connected between the two rotating blocks 16, a railing 18 fixedly connected to the rotating shaft 17, and a U-shaped pipe clamp 19 fixedly connected to the fixed block 3.

[0031] Specifically, when the railing 18 is above the push plate 13, even if the push plate 13 moves upward, the limiting block 12 will not disengage from the groove 9 under the action of the railing 18, thus always fixing the connecting seat. Rotating the railing 18 causes it to disengage from the U-shaped pipe clamp 19, and then pushing the push plate 13 upward so that the lower surface of the push plate 13 is above the railing 18. Rotating the railing 18 back to its original position and connecting it with the U-shaped pipe clamp 19 can restrict the downward movement of the push plate 13, thus keeping the fixing mechanism in a stable state. At this time, the lower end of the limiting block 12 is away from the groove 9, making it easier to remove the upper cover 2 and the connecting seat.

[0032] like Figure 1 As shown, the number of fixing mechanisms and limiting components provided on the fixing block 3 is any one to four, and they are symmetrically arranged about both sides of the fixing block 3.

[0033] Specifically, multiple fixing mechanisms and limiting components can enhance the fixing effect on multiple connectors, ensuring that if one fixing mechanism is damaged, the other fixing mechanisms can still function normally.

[0034] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An AC contactor for easy maintenance comprising a middle cover (1) and an upper cover (2), characterized in that: The both sides of the middle cover (1) are fixedly connected with fixed blocks (3), the surface of the fixed block (3) is provided with a jack (4), the inside of the fixed block (3) is provided with a sliding cavity (5), the bottom wall of the sliding cavity (5) is provided with two sliding grooves (6), the sliding groove (6) is communicated with the jack (4), the surface of the fixed block (3) is provided with a through hole (7), the through hole (7) is communicated with the sliding cavity (5), the both sides of the upper cover (2) are fixedly connected with connecting seats matched with the jack (4), the inside of the sliding cavity (5) is provided with a fixing mechanism for fixing the connecting seat, and the surface of the fixed block (3) is fixedly connected with a limiting component.

2. An AC contactor for ease of maintenance according to claim 1, characterized in that: The connecting seat comprises L-shaped insertion rods (8) fixedly connected to the side surface of the upper cover (2), the L-shaped insertion rods (8) are matched with the jack (4), and two recesses (9) are formed in the L-shaped insertion rods (8) and are parallel to each other, and the two recesses (9) are matched with the two sliding grooves (6).

3. An AC contactor for ease of maintenance according to claim 2, characterized in that: The fixing mechanism comprises two sliding rods (10) fixedly connected to the inner wall of the sliding cavity (5), the sliding rod (10) is slidably connected with a sliding plate (11), the sliding plate (11) is slidably connected with the sliding cavity (5), the lower surface of the sliding plate (11) is fixedly connected with two limiting blocks (12) matched with the sliding groove (6), the side surface of the sliding plate (11) is fixedly connected with a push plate (13), the surface of the sliding plate (11) is fixedly connected with a spring (14), and the upper end of the spring (14) is fixedly connected with the inner wall of the sliding cavity (5).

4. An AC contactor for ease of maintenance according to claim 3, characterized in that: The lower end of the limiting block (12) is provided with a chamfer (15).

5. An AC contactor for ease of maintenance according to claim 1, characterized in that: The limiting component comprises two rotating blocks (16) fixedly connected to the surface of the fixed block (3), a rotating shaft (17) is rotatably connected between the two rotating blocks (16), the rotating shaft (17) is fixedly connected with a railing (18), and the fixed block (3) is fixedly connected with a U-shaped pipe clamp (19).

6. An AC contactor for ease of maintenance according to claim 1, characterized in that: The number of the fixing mechanism and the limiting component arranged on the fixed block (3) is any one of one to four, and the fixing mechanism and the limiting component are symmetrically arranged on the both sides of the fixed block (3).

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