Improved dc contactor contact structure

Abstract

The utility model relates to the technical field of direct current contactor, concretely is an improved direct current contactor contact structure, including direct current contactor body, the inside of direct current contactor body is provided with mounting hole, the inside of mounting hole is provided with contact body, the outside of contact body is provided with fixed structure, fixed structure includes limit slot and positioning hole, the inside of positioning hole is provided with ball groove, the inside of positioning hole is provided with locating piece. The improved direct current contactor contact structure, through the cooperation of limit slot and spring plate, play the role of positioning, through the cooperation of locating piece and positioning hole, play the role of limiting, through the cooperation of spherical spring lock and ball groove, play the role of preventing locating piece from falling off, through the cooperation of connecting shaft and connecting frame, play the role of being convenient for spring plate to carry out the deformation, through the cooperation of limit rod and limit frame, play the role of preventing locating piece from tilting.

Description

Technical Field

[0001] This utility model relates to the field of DC contactor technology, specifically to an improved DC contactor contact structure. Background Technology

[0002] A DC contactor is a contactor controlled by a DC coil with a DC core. Its load can be DC or AC. Unlike AC contactors, the core of a DC contactor does not contain eddy currents; therefore, it is typically made of mild steel or industrial pure iron in a circular shape. Because the attraction coil of a DC contactor is energized with DC, there is no inrush starting current or violent impact of the core, resulting in a long lifespan and suitability for applications requiring frequent starts and stops. The selection of AC or DC contactors can be found in electrical product catalogs based on the operating voltage and current of the circuit. When the contactor coil is energized, the coil current... A magnetic field is generated, causing the stationary iron core to generate an electromagnetic attraction that draws the moving iron core, thus actuating the contacts: normally closed contacts open and normally open contacts close, and the two are linked. When the coil is de-energized, the electromagnetic attraction disappears, and the armature is released under the action of the release spring, causing the contacts to return to their original state: normally open contacts open and normally closed contacts close. The stationary contact is a fixed contact component in switches, relays, and contactors that does not move with the actuator. It is also called a stationary contact or fixed contact. This component adopts a rigid structure to maintain a stationary state. In electrical contactors, it is usually installed at a high position on the body and has the action characteristic of contacting first and then disconnecting.

[0003] The existing DC contactor contact structure suffers from a lack of stability during installation, resulting in low working efficiency. Furthermore, the lack of a sealing structure at the connection point of the contact body leads to poor sealing performance. Therefore, there is an urgent need for an improved DC contactor contact structure to address these issues. Utility Model Content

[0004] The purpose of this invention is to at least solve one of the aforementioned technical defects.

[0005] Therefore, one objective of this utility model is to propose an improved DC contactor contact structure to solve the problems mentioned in the background art and overcome the shortcomings of the prior art.

[0006] To achieve the above objectives, one embodiment of this utility model provides an improved DC contactor contact structure, including a DC contactor body. The DC contactor body has an internal mounting hole, and a contact body is disposed inside the mounting hole. A fixing structure is disposed on the outer side of the contact body. The fixing structure includes a limiting groove and a positioning hole. A ball groove is internally formed in the positioning hole, and a positioning block is disposed inside the positioning hole. A spherical spring lock and a spring plate are disposed on the outer side of the positioning block. A connecting shaft and a limiting rod are disposed on the outer side of the spring plate. A connecting bracket is disposed on the outer side of the connecting shaft, and a limiting bracket is disposed on the outer side of the limiting rod.

[0007] The present invention is further configured such that: the positioning hole and the ball groove are both opened inside the contact body, the spring plate is adapted to the limiting groove, the positioning block is adapted to the positioning hole, and the spherical spring lock is adapted to the ball groove.

[0008] By adopting the above technical solution, the positioning block is adapted to the positioning hole, thus playing a limiting role.

[0009] The present invention is further configured such that: the connecting shaft is rotatably connected to the inside of the connecting frame, and the limiting rod is slidably connected to the inside of the limiting frame.

[0010] By adopting the above technical solution, the limiting rod is slidably connected inside the limiting frame, which plays a role in preventing the limiting block from tilting.

[0011] The present invention is further configured such that: an installation cylinder is provided on the outer side of the connecting frame, and an installation groove A and an installation groove B are provided inside the installation cylinder, and the limiting frame and the connecting frame are both fixedly connected to the inside of the installation groove A.

[0012] By adopting the above technical solution, the inside of the mounting cylinder is provided with mounting groove A and mounting groove B, which serve as the mounting structure.

[0013] The present invention is further configured such that: a sealing structure is provided inside the mounting groove B, the sealing structure includes a rubber plate, a transmission plate is provided at the bottom of the rubber plate, a sliding groove is provided inside the transmission plate, a slider is provided inside the sliding groove, a pressing plate is provided at the bottom of the slider, and a positioning spring is provided on one side of the pressing plate.

[0014] By adopting the above technical solution, a positioning spring is provided on one side of the extrusion plate to prevent the extrusion plate from falling off.

[0015] The present invention is further configured such that: the rubber plate and the transmission plate are both slidably connected inside the mounting groove B, and the slider is slidably connected inside the sliding groove.

[0016] By adopting the above technical solution, the slider is slidably connected inside the groove, which plays a role in restricting the movement path of the extrusion plate.

[0017] The present invention is further configured such that: the extrusion plate and the slider are fixedly connected, one end of the positioning spring is fixedly connected to the extrusion plate, and the other end of the positioning spring is fixedly connected to the inside of the mounting groove B.

[0018] By adopting the above technical solution, the extrusion plate and the slider are fixedly connected, which plays a role in transmission.

[0019] In summary, the beneficial technical effects of this utility model are as follows: 1. This improved DC contactor contact structure uses a combination of a limiting groove and a spring plate for positioning, a positioning block and a positioning hole for limiting movement, a ball spring lock and a ball groove for preventing the positioning block from falling off, a connecting shaft and a connecting bracket for facilitating the deformation of the spring plate, and a limiting rod and a limiting bracket for preventing the positioning block from tilting. This structure allows for secure fixing of the contact body during installation, thereby improving work efficiency. 2. The improved DC contactor contact structure incorporates a rubber plate to wrap around the contact body, a compression plate to compress the rubber plate, a slider and a groove to prevent the compression plate from tilting, a compression plate to tilt the rubber plate, and a positioning spring to prevent the compression plate from falling off. This structure allows the rubber plate to fit more snugly against the contact body, thus improving its sealing performance.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the mounting cylinder of this utility model; Figure 3 This is a schematic diagram of the fixing structure of this utility model; Figure 4 This is a schematic diagram of the contact body of this utility model; Figure 5 This is a schematic diagram of the structure of utility model B; Figure 6 This is a schematic diagram of the structure of the spring plate of this utility model; Figure 7 This is a schematic diagram of the sealing structure of this utility model; Figure 8 This is a schematic diagram of the transmission plate of this utility model.

[0022] In the diagram: 1. DC contactor body; 2. Mounting hole; 3. Contact body; 4. Fixing structure; 5. Limiting groove; 6. Positioning hole; 7. Ball groove; 8. Positioning block; 9. Spherical spring lock; 10. Spring plate; 11. Connecting shaft; 12. Limiting rod; 13. Connecting frame; 14. Limiting frame; 15. Mounting cylinder; 16. Mounting groove A; 17. Mounting groove B; 18. Sealing structure; 19. Rubber plate; 20. Transmission plate; 21. Slide groove; 22. Slider; 23. Extrusion plate; 24. Positioning spring. Detailed Implementation

[0023] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0024] Example 1 Reference Figures 1 to 6 This utility model discloses an improved DC contactor contact structure, including a DC contactor body 1. The DC contactor body 1 has an internal mounting hole 2, and a contact body 3 is disposed inside the mounting hole 2. A fixing structure 4 is disposed on the outer side of the contact body 3. The fixing structure 4 includes a limiting groove 5 and a positioning hole 6. A ball groove 7 is provided inside the positioning hole 6, and a positioning block 8 is disposed inside the positioning hole 6. A spherical spring lock 9 and a spring plate 10 are disposed on the outer side of the positioning block 8. A connecting shaft 11 and a limiting rod 12 are disposed on the outer side of the spring plate 10. A connecting bracket 13 is disposed on the outer side of the connecting shaft 11, and a limiting bracket 14 is disposed on the outer side of the limiting rod 12. In this embodiment, the mounting hole 2 facilitates the contact body 3, and the limiting groove 5 engages the spring plate 10.

[0025] Reference Figures 3 to 6 The positioning hole 6 and the ball groove 7 are both opened inside the contact body 3. The spring plate 10 is adapted to the limiting groove 5, the positioning block 8 is adapted to the positioning hole 6, and the spherical spring lock 9 is adapted to the ball groove 7. In this embodiment, the ball groove 7 plays the role of locking the spherical spring lock 9, the positioning hole 6 plays the role of locking the positioning block 8, the positioning block 8 plays the role of driving the spherical spring lock 9 to move, and the spherical spring lock 9 plays the role of limiting.

[0026] Reference Figure 6The connecting shaft 11 is rotatably connected to the inside of the connecting frame 13, and the limiting rod 12 is slidably connected to the inside of the limiting frame 14. In this embodiment, the connecting shaft 11 facilitates the deformation of the spring plate 10, the connecting frame 13 facilitates the rotation of the connecting shaft 11, the limiting rod 12 prevents the positioning block 8 from tilting, and the limiting frame 14 fixes the movement path of the limiting rod 12.

[0027] Reference Figure 3 An installation cylinder 15 is provided on the outside of the connecting frame 13. The installation cylinder 15 has an installation groove A16 and an installation groove B17 inside. The limiting frame 14 and the connecting frame 13 are both fixedly connected to the inside of the installation groove A16. In this embodiment, the installation cylinder 15 serves as an installation structure, and the installation groove A16 serves to fix the connecting frame 13 and the limiting frame 14.

[0028] Reference Figure 7 and Figure 8 The mounting groove B17 is equipped with a sealing structure 18, which includes a rubber plate 19. A transmission plate 20 is provided at the bottom of the rubber plate 19. A sliding groove 21 is provided inside the transmission plate 20. A slider 22 is provided inside the sliding groove 21. A pressing plate 23 is provided at the bottom of the slider 22. A positioning spring 24 is provided on one side of the pressing plate 23. In this embodiment, the mounting groove B17 serves to install the sealing structure 18, and the rubber plate 19 serves to improve the sealing performance.

[0029] Reference Figure 7 and Figure 8 Both the rubber plate 19 and the transmission plate 20 are slidably connected inside the mounting groove B17, and the slider 22 is slidably connected inside the slide groove 21. In this embodiment, the transmission plate 20 plays the role of squeezing the rubber plate 19, the slider 22 plays the role of connecting the squeezing plate 23, and the slide groove 21 plays the role of limiting the position.

[0030] Reference Figure 7 and Figure 8 The extrusion plate 23 and the slider 22 are fixedly connected. One end of the positioning spring 24 is fixedly connected to the extrusion plate 23, and the other end of the positioning spring 24 is fixedly connected to the inside of the mounting groove B17. In this embodiment, the extrusion plate 23 plays the role of pushing the rubber plate 19 to deform, and the positioning spring 24 plays the role of preventing the extrusion plate 23 from falling off.

[0031] The implementation principle of this embodiment is as follows: When installing the contact body 3 into the DC contactor body 1, align the contact body 3 with the reserved mounting hole 2 of the DC contactor body 1. After the contacts are aligned, insert the contacts into the hole. One end of the contact body 3 will first enter the interior of the DC contactor body 1, and then enter the interior of the mounting cylinder 15. When one end of the contact body 3 enters the interior of the mounting cylinder 15, it will first contact the positioning block 8. As the contact body 3 continues to penetrate deeper, the contact body 3 will push the positioning block 8 to move. During the movement of the positioning block 8, the spring plate 10 will be compressed and deformed. At the same time, since the connecting shaft 11 is fixedly connected to the spring plate 10, the connecting shaft 11 will rotate inside the connecting frame 13 during the deformation of the spring plate 10. Meanwhile, since the limiting rod 12 is fixedly connected to one side of the spring plate 10, the limiting rod 12 will slide inside the limiting frame 14 during the deformation of the spring plate 10 to prevent the contact body 3 from tilting during the process of pushing the positioning block 8 to slide. After the contact body 3 is fully inserted into the DC contactor body 1, its bottom will also be fully inserted into the mounting cylinder 15. At this time, two situations may occur: First, the positioning block 8 is exactly aligned with the positioning hole 6, and the positioning block 8 will directly enter the interior of the positioning hole 6. After the positioning block 8 enters the interior of the positioning hole 6, the ball spring lock 9 will engage with the interior of the ball groove 7, thereby fixing the contact body 3. Second, the positioning block 8 and the positioning hole 6 are misaligned. The positioning block 8 will first engage with the interior of the positioning hole 6. At this time, the operator needs to rotate the contact body 3. As the contact body 3 rotates continuously, the positioning hole 6 will gradually move into the interior of the positioning block 8 until the positioning hole 6 and the positioning block 8 are aligned. Then, the spring plate 10 will restore its deformation and push the positioning block 8 into the interior of the positioning hole 6. It will also drive the limit rod 12 to slide inside the limit frame 14, causing the limit rod 12 to reset. After the positioning block 8 enters the interior of the positioning hole 6, the spring plate 10 will also engage with the interior of the limit groove 5. Thus, the fixing of the contact body 3 is completed. During the above steps, when the positioning block 8 enters the positioning hole 6 or the limiting groove 5, the contact body 3 has pushed the extrusion plate 23 to move outward. During the movement of the extrusion plate 23, the slider 22 will slide inside the slide groove 21 to prevent the extrusion plate 23 from tilting. When the contact body 3 is completely inside the mounting cylinder 15, the slider 22 has also slid to the end of the slide groove 21. Since one side of the extrusion plate 23 is set as an inclined surface, the spacing of the transmission plates 20 will gradually increase during the outward movement of the extrusion plate 23, and pressure will be applied to the rubber plate 19. The rubber plate 19 will deform, the thickness of the rubber plate 19 will become thinner, and the covered area will become larger. Therefore, the contact surface between the rubber plate 19 and the contact body 3 will fit more closely, thereby improving the sealing performance of the connection of the contact body 3. The mounting sleeve 15 is fixedly connected to the inside of the DC contactor body 1 and is concentric with its reserved mounting hole 2 so as to quickly install the contact body 3. After the contact body 3 is installed, epoxy glue can be injected into the inside of the DC contactor body 1 to further improve its sealing performance.

Claims

1. An improved DC contactor contact structure, characterized in that: The device includes a DC contactor body (1), an installation hole (2) inside the DC contactor body (1), a contact body (3) inside the installation hole (2), a fixing structure (4) outside the contact body (3), the fixing structure (4) including a limiting groove (5) and a positioning hole (6), a ball groove (7) inside the positioning hole (6), a positioning block (8) inside the positioning hole (6), a ball spring lock (9) and a spring plate (10) outside the positioning block (8), a connecting shaft (11) and a limiting rod (12) outside the spring plate (10), a connecting frame (13) outside the connecting shaft (11), and a limiting frame (14) outside the limiting rod (12).

2. The improved DC contactor contact structure according to claim 1, characterized in that: The positioning hole (6) and the ball groove (7) are both opened inside the contact body (3). The spring plate (10) is adapted to the limiting groove (5). The positioning block (8) is adapted to the positioning hole (6). The spherical spring lock (9) is adapted to the ball groove (7).

3. The improved DC contactor contact structure according to claim 1, characterized in that: The connecting shaft (11) is rotatably connected to the inside of the connecting frame (13), and the limiting rod (12) is slidably connected to the inside of the limiting frame (14).

4. The improved DC contactor contact structure according to claim 1, characterized in that: An installation cylinder (15) is provided on the outside of the connecting frame (13). An installation groove A (16) and an installation groove B (17) are provided inside the installation cylinder (15). The limiting frame (14) and the connecting frame (13) are both fixedly connected to the inside of the installation groove A (16).

5. The improved DC contactor contact structure according to claim 4, characterized in that: The mounting groove B (17) is provided with a sealing structure (18), which includes a rubber plate (19). A transmission plate (20) is provided at the bottom of the rubber plate (19). A sliding groove (21) is provided inside the transmission plate (20). A slider (22) is provided inside the sliding groove (21). A pressing plate (23) is provided at the bottom of the slider (22). A positioning spring (24) is provided on one side of the pressing plate (23).

6. The improved DC contactor contact structure according to claim 5, characterized in that: The rubber plate (19) and the transmission plate (20) are both slidably connected inside the mounting groove B (17), and the slider (22) is slidably connected inside the slide groove (21).

7. An improved DC contactor contact structure according to claim 5, characterized in that: The extrusion plate (23) and the slider (22) are fixedly connected. One end of the positioning spring (24) is fixedly connected to the extrusion plate (23), and the other end of the positioning spring (24) is fixedly connected to the inside of the mounting groove B (17).

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