A slow-motion contact seat for electrical apparatus

Abstract

The utility model provides a slow motion type contact seat for electrical equipment relates to contact seat technical field, including slow motion type contact seat body, slow motion type contact seat body inside is equipped with wiring cavity, wiring cavity bottom is equipped with insulating spacer, wiring cavity inside is equipped with a plurality of lower contact energizing piece, insulating spacer upper end part symmetry fixed mounting has delay control structure, and delay control structure includes PCB board, through setting up PCB board on the insulating spacer of slow motion type contact seat body inside, and the connecting line is connected between lower contact energizing piece and PCB board, to realize the fine programmable control to slow motion type contact seat body contact energizing time, and with the aid of the program that PCB board preprovides, can be based on different application scene and process demand, flexible and accurate adjustment corresponding lower contact energizing piece inside the energizing time length, make it have delay slow motion characteristic, simultaneously, also can avoid the time control of additional use time relay, and then improve the convenience.

Description

Technical Field

[0001] This utility model belongs to the field of contact seat technology, and more specifically, it relates to a slow-moving contact seat for electrical equipment. Background Technology

[0002] As an electrical control device, a relay has an internal connection mechanism between the control system (i.e., the input circuit) and the controlled system (i.e., the output circuit). It mainly operates based on the principle of electromagnetic induction. When current flows through the relay coil, it generates a magnetic field, which attracts the armature, causing the moving contact and stationary contact of the contact base to make contact or separate. This achieves the circuit's conduction, disconnection, or switching functions, and also provides electrical isolation. For example, between the control circuit and the high-voltage, high-current load circuit, a relay can separate the two, ensuring that the low-voltage signal of the control circuit can safely and effectively control the operation of the high-voltage load, providing safety for operators and control equipment.

[0003] Currently available conventional contact sockets are often limited to power transmission. When it is necessary to control the speed of contact action, they can usually only be achieved by using an external time relay. However, time relays are not only bulky, but also require additional electrical wiring operations. This makes it extremely inconvenient to achieve the effect of delayed slow action in non-time relay systems, and it is difficult to meet the needs of slow-action contact sockets in practical applications. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a slow-moving contact seat for electrical equipment.

[0005] A slow-acting contact holder for electrical equipment includes a slow-acting contact holder body. The slow-acting contact holder body has a wiring cavity inside. An insulating isolation plate, which is cross-shaped, is located at the bottom of the wiring cavity. Multiple lower contact energizing plates are located inside the wiring cavity, each lower contact energizing plate being located at one of the four corners of the insulating isolation plate. Each lower contact energizing plate is fixedly installed to the insulating isolation plate.

[0006] The upper end of the insulating isolation sheet is symmetrically fixed with a time delay control structure;

[0007] The delay control structure includes a PCB board. Connecting wires are symmetrically fixed on the side walls of the two PCB boards. Each connecting wire is connected to the lower contact energizing piece. The two PCB boards are located between the lower contact energizing pieces. Multiple wiring ports are provided on the upper part of the two PCB boards. Through slots are symmetrically opened inside the wiring cavity. Communication ports are provided on the side walls of the two PCB boards. The two communication ports are located inside the through slots.

[0008] Preferably, each of the lower contact energizing pieces has a through-hole threaded groove, and each threaded groove has a Phillips screw threaded inside. Each Phillips screw can move up and down through the threaded groove, and each Phillips screw has an upper contact energizing piece on its circumferential surface.

[0009] Preferably, each of the upper contact energizing pieces has a rotating groove inside, each rotating groove is rotatably mounted on the circumferential surface of the cross screw, and each rotating groove is located at a position on the surface of the cross screw without threads. The inner wall of the wiring cavity has symmetrical sliding grooves.

[0010] Preferably, each of the slide grooves is formed on the side wall of the lower contact energized piece, each of the slide grooves has a symmetrically formed limit groove, each of the limit grooves has a limit block slidably installed inside, and each of the limit blocks has a slider fixedly installed between each pair of them.

[0011] Preferably, each slider is located inside the slide groove, each slider is slidably installed with the slide groove, each slider is partially exposed inside the wiring cavity, each slider is fixedly installed with the upper contact energizing piece, and the bottom of the upper contact energizing piece has an arc-shaped surface.

[0012] Preferably, a serrated layer is fixedly installed on the upper end of each of the lower contact energized pieces, and the shape of each serrated layer is adapted to the shape of the arc surface.

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

[0014] In this invention, a PCB board is installed on the insulating isolation sheet inside the slow-acting contact base body, and a connecting wire is connected between the lower contact energizing sheet and the PCB board to achieve precise programmable control of the energizing time of the contacts in the slow-acting contact base body. With the help of the program preset on the PCB board, the energizing time inside the corresponding lower contact energizing sheet can be flexibly and accurately adjusted according to different application scenarios and process requirements, so that it has the characteristics of delayed slow-acting. At the same time, it can also avoid the use of an additional time relay for time control, thereby improving convenience.

[0015] In this utility model, by setting a sliding groove, when the operator moves the rotatable cross screw up and down, the slider can be driven to slide inside the sliding groove. At the same time, since the upper contact energizing piece and the cross screw are rotated and installed, a limit can be set, so that the lower contact energizing piece and the upper contact energizing piece can overlap and clamp well.

[0016] In this utility model, by setting a sliding groove and a limiting groove, when the operator rotates the cross screw to drive the upper contact energizing piece to move up and down, the upper contact energizing piece can drive the limiting block and slider connected to it to slide and limit the movement inside the sliding groove and the limiting groove respectively. This ensures that when the cross screw descends, it drives the upper contact energizing piece to slide smoothly vertically, thereby increasing the pressure of the upper and lower contact energizing pieces on the copper wire and improving the stability of the cable connection.

[0017] In this invention, since the lower part of the upper contact energizing piece is an arc-shaped surface, by setting a serrated layer on the lower contact energizing piece, and the shape of the serrated layer is adapted to the arc-shaped surface of the upper contact energizing piece, the clamping force of the upper contact energizing piece on the cable can be further improved, avoiding the problem of unstable voltage transmission caused by loosening.

[0018] In this utility model, by setting one end of the slide groove and the limiting groove to be through-open, when the upper contact energizing piece deforms after long-term use, the operator can use a screwdriver to turn the cross screw, which will cause the cross screw and the upper contact energizing piece, the limiting block and the slider on the cross screw to directly detach from the slow-moving contact seat body, thereby improving maintainability and facilitating replacement. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the three-dimensional connected exploded structure of this utility model;

[0021] Figure 3 This is a three-dimensional structural diagram of the slow-moving contact seat body of this utility model;

[0022] Figure 4 This is a three-dimensional structural diagram of the upper contact energizing piece of this utility model;

[0023] Figure 5 This is a three-dimensional exploded view of the slow-moving contact seat body of this utility model;

[0024] Figure 6 This is a schematic diagram of the three-dimensional exploded structure of the serrated layer of this utility model;

[0025] Figure 7 This is a cross-sectional view of the slow-moving contact seat body of this utility model;

[0026] Figure 8 This is a utility model Figure 7 Enlarged view of the structure at point A in the image.

[0027] In the figure, the correspondence between the component names and the attached drawing numbers is as follows: 11. Slow-acting contact base body; 12. Wiring cavity; 13. Insulating isolation piece; 14. Lower contact energizing piece; 15. PCB board; 16. Connecting wire; 17. Wiring port; 18. Through slot; 19. Communication socket; 21. Threaded slot; 22. Phillips head screw; 23. Upper contact energizing piece; 24. Rotating slot; 25. Sliding groove; 26. Limiting slot; 27. Limiting block; 28. Sliding block; 29. ​​Arc-shaped surface; 31. Serrated layer. Detailed Implementation

[0028] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0029] Please see Figure 1 - Figure 8 This utility model provides a slow-acting contact holder for electrical equipment, including a slow-acting contact holder body 11. The slow-acting contact holder body 11 has a wiring cavity 12 inside, and an insulating isolation plate 13 is provided at the bottom of the wiring cavity 12. The insulating isolation plate 13 is cross-shaped. Multiple lower contact energizing plates 14 are provided inside the wiring cavity 12, each lower contact energizing plate 14 being located at one of the four corners of the insulating isolation plate 13, and each lower contact energizing plate 14 is fixedly installed with the insulating isolation plate 13.

[0030] A time delay control structure is symmetrically fixedly installed on the upper end of the insulating isolation sheet 13;

[0031] The delay control structure includes PCB boards 15. Connecting wires 16 are symmetrically fixedly mounted on the side walls of two PCB boards 15. Each connecting wire 16 is connected to a lower contact energizing piece 14. The two PCB boards 15 are located between the lower contact energizing pieces 14. Multiple wiring ports 17 are provided at the upper ends of both PCB boards 15. Through slots 18 are symmetrically opened inside the wiring cavity 12. Communication sockets 19 are provided on the side walls of both PCB boards 15. Both communication sockets 19 are located inside the through slots 18. Communication is achieved through the inner side of the slow-acting contact base body 11. A PCB board 15 is mounted on the insulating isolation sheet 13, and a connecting line 16 is connected between the lower contact energizing sheet 14 and the PCB board 15 to achieve fine-grained programmable control of the contact energizing time of the slow-moving contact base body 11. With the help of the program preset on the PCB board 15, the energizing time inside the corresponding lower contact energizing sheet 14 can be flexibly and accurately adjusted according to different application scenarios and process requirements, so that it has the characteristics of delayed slow-moving. At the same time, it can also avoid the use of an additional time relay for time control, thereby improving convenience.

[0032] Each lower contact energizing piece 14 has a threaded groove 21 running through it, and a Phillips head screw 22 is threaded into each threaded groove 21. Each Phillips head screw 22 can move up and down through the threaded groove 21. Each Phillips head screw 22 has an upper contact energizing piece 23 on its circumferential surface, and each upper contact energizing piece 23 has a rotating groove 24 inside it. Each rotating groove 24 is located on the circumferential surface of the Phillips head screw 22 and is located at a position on the surface of the Phillips head screw 22 where there are no threads. The inner wall of the wiring cavity 12 has symmetrically formed sliding grooves 25, each sliding groove 25 is formed on the side wall of the lower contact energizing piece 14, and each sliding groove 25 has symmetrically formed limit grooves 26 inside it. Each limit groove 26 has a limit block 27 slidably installed inside it. By setting the sliding grooves 25, the operator can rotate the Phillips head screw 22. When moving up and down, the slider 28 can slide inside the groove 25. At the same time, since the upper contact energizer 23 and the cross screw 22 are rotated and can be limited, the lower contact energizer 14 and the upper contact energizer 23 can be better overlapped and clamped. By setting the groove 25 and the limiting groove 26, when the operator rotates the cross screw 22 to move the upper contact energizer 23 up and down, the upper contact energizer 23 can drive the connected limiting block 27 and slider 28 to slide and limit inside the groove 25 and the limiting groove 26 respectively. This ensures that when the cross screw 22 descends, it drives the upper contact energizer 23 to slide smoothly vertically, thereby increasing the pressure of the upper contact energizer 23 and the lower contact energizer 14 on the copper wire and improving the stability of the cable connection.

[0033] Each pair of limit blocks 27 is fixedly installed with a slider 28. Each slider 28 is located inside the slide groove 25 and is slidably installed with the slide groove 25. Each slider 28 is partially exposed inside the wiring cavity 12. By setting one end of the slide groove 25 and the limit groove 26 to be through-open, when the upper contact energizing piece 23 is deformed after long-term use, the operator can use a screwdriver to turn the cross screw 22, which will drive the cross screw 22 and the upper contact energizing piece 23, limit block 27 and slider 28 on the cross screw 22 to directly detach from the slow-moving contact base body 11, thereby improving maintainability and facilitating replacement.

[0034] Each slider 28 is fixedly installed with the upper contact energizing piece 23. The bottom of the upper contact energizing piece 23 has an arc-shaped surface 29. Each lower contact energizing piece 14 has a serrated layer 31 fixedly installed at its upper end. The shape of each serrated layer 31 is adapted to the shape of the arc-shaped surface 29. Since the lower part of the upper contact energizing piece 23 is an arc-shaped surface 29, by setting a serrated layer 31 on the lower contact energizing piece 14 and adapting the shape of the serrated layer 31 to the arc-shaped surface 29 of the upper contact energizing piece 23, the clamping force of the upper contact energizing piece 23 on the cable can be further improved, avoiding the problem of unstable voltage transmission caused by loosening.

[0035] PCB board 15: PCB board 15 is existing technology, and its internal components are mainly composed of a microcontroller, a timing circuit, and a control circuit.

[0036] The first step involves the operator picking up wire strippers, placing the wire end in the appropriate position, and then removing the insulation from the wire end using the stripper's blades, exposing the copper wire completely. Next, the operator carefully places the exposed copper wire between the lower contact contact plate 14 and the curved surface 29 at the bottom of the upper contact contact plate 23 inside the wiring cavity 12, ensuring the copper wire is in the correct predetermined position between the lower contact contact plate 14 and the curved surface 29. Then, the operator picks up a screwdriver, inserts the screwdriver tip into the Phillips head screw 22, and begins to rotate the screwdriver. Due to the thread groove 22 of the Phillips head screw 22 and the lower contact contact plate 14... A threaded transmission structure is formed between 1 and 2. Under the torque applied by the screwdriver, the cross screw 22 begins to rotate radially around its axis. This rotation causes the cross screw 22 to descend along the direction of the thread groove 21. The descent of the cross screw 22 drives the limit block 27 and the slider 28 connected to it to slide in the slide groove 25 and the limit groove 26 respectively. At the same time, because the cross screw 22 and the upper contact energized piece 23 are rotatably connected through the rotating groove 24, and the limit block 27 and the slider 28 play a limiting role, when the cross screw 22 descends, it can drive the upper contact energized piece 23 to slide smoothly vertically without deviation or shaking.

[0037] By setting the slide groove 25, when the operator rotates the cross screw 22 to move it up and down, the slider 28 will slide inside the slide groove 25. Since the upper contact energizing piece 23 and the cross screw 22 are installed by rotation, their movement is limited, so that the lower contact energizing piece 14 and the upper contact energizing piece 23 can overlap and clamp well. Moreover, after setting the slide groove 25 and the limiting groove 26, when the operator rotates the cross screw 22 to move the upper contact energizing piece 23 up and down, the upper contact energizing piece 23 will drive the limiting block 27 and the slider 28 to slide inside the slide groove 25 and the limiting groove 26 respectively, thereby limiting their movement and ensuring that when the cross screw 22 descends, the upper contact energizing piece 23 can slide smoothly vertically. This increases the pressure of the upper contact energizing piece 23 and the lower contact energizing piece 14 on the copper wire, thereby improving the stability of the cable connection and avoiding problems such as loose connection during use.

[0038] In the second step, during the above operation, the arc-shaped surface 29 below the upper contact energizer 23 will gradually approach the serrated layer 31 on the lower contact energizer 14 as the cross screw 22 rotates and descends. When the arc-shaped surface 29 contacts the serrated layer 31, the serrated layer 31 will cooperate with the arc-shaped surface 29 to tightly bite and squeeze each other. Through this biting and squeezing action, the metal copper wire is firmly clamped, thereby completing a safe, reliable and stable wiring operation, ensuring a good electrical connection effect, so that the current can pass through the wiring part stably, and there will be no current interruption or instability caused by poor contact.

[0039] By providing a serrated layer 31 on the lower contact energizing piece 14, and having the shape of the serrated layer 31 adapted to the arc surface 29 of the upper contact energizing piece 23, this structural design can further improve the clamping force of the upper contact energizing piece 23 on the cable, effectively preventing the problem of unstable voltage transmission caused by cable loosening, and ensuring the normal operation and safe use of electrical equipment.

[0040] The third step involves the staff inserting the communication cable into the communication socket 19 beforehand. During insertion, it is crucial to ensure a tight connection between the communication cable plug and the interface inside the communication socket 19, without any looseness or poor contact. Then, the staff programs the PCB board 15 according to the required process. During programming, the staff must accurately set various parameters according to the process requirements to determine the energizing time requirement of the lower contact energizing piece 14. When it is necessary to energize a specific lower contact energizing piece 14, the PCB board 15 will initiate the control process according to the internal preset program logic. The PCB board 15 achieves this function through its integrated microcontroller and related control circuits, such as using a timer module or a specific timing algorithm. These modules and algorithms can precisely control the timing of the output signal. When energizing is required, the current will be delayed strictly according to the time parameters set by the PCB board 15 program to meet the requirements for precise control of the energizing time under different working conditions, thereby achieving precise operation and ensuring that the equipment can work normally and stably under various working conditions.

[0041] By setting a PCB board 15 on the insulating isolation sheet 13 inside the slow-acting contact base body 11, and connecting the lower contact energizing sheet 14 and the PCB board 15 with a connecting line 16, it is possible to achieve precise programmable control of the contact energizing time of the slow-acting contact base body 11. With the help of the pre-set program on the PCB board 15, the energizing time inside the corresponding lower contact energizing sheet 14 can be flexibly and accurately adjusted according to different application scenarios and process requirements, so that it has the characteristics of delayed slow-acting and meets various complex working requirements. At the same time, this design also avoids the use of additional time relays for time control, reduces the complexity and cost of the equipment, and improves the convenience of operation, making it easier for staff to install and debug the equipment.

[0042] The embodiments of this utility model are given for the purposes of illustration and description, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A slow-acting contact holder for electrical equipment, comprising a slow-acting contact holder body (11), wherein the slow-acting contact holder body (11) has a wiring cavity (12) inside, and an insulating isolation plate (13) is provided at the bottom of the wiring cavity (12). The insulating isolation plate (13) is cross-shaped, and a plurality of lower contact energizing plates (14) are provided inside the wiring cavity (12). Each lower contact energizing plate (14) is located at one of the four corners of the insulating isolation plate (13), and each lower contact energizing plate (14) is fixedly installed with the insulating isolation plate (13), characterized in that: The upper end of the insulating isolation sheet (13) is symmetrically fixed with a delay control structure; the delay control structure includes a PCB board (15), and connecting wires (16) are symmetrically fixed on the side walls of the two PCB boards (15). Each connecting wire (16) is connected to the lower contact energizing piece (14). The two PCB boards (15) are located between the lower contact energizing pieces (14). The upper end of the two PCB boards (15) is provided with multiple wiring ports (17). The wiring cavity (12) is symmetrically provided with through slots (18). The side walls of the two PCB boards (15) are provided with communication ports (19). The two communication ports (19) are located at... Inside the through groove (18), each of the lower contact energizing pieces (14) is provided with a sliding groove (25) on its side wall. A limiting groove (26) is symmetrically opened inside the sliding groove (25). A limiting block (27) is slidably installed inside each limiting groove (26). A slider (28) is fixedly installed between each pair of limiting blocks (27). Each slider (28) is fixedly installed with the upper contact energizing piece (23). An arc-shaped surface (29) is opened at the bottom of the upper contact energizing piece (23). A serrated layer (31) is fixedly installed at the upper end of each lower contact energizing piece (14). The shape of each serrated layer (31) is adapted to the shape of the arc-shaped surface (29).

2. The slow-acting contact base for electrical equipment as described in claim 1, characterized in that, Each of the lower contact energizing pieces (14) has a through threaded groove (21) inside, and each of the threaded grooves (21) has a cross screw (22) threaded inside.

3. The slow-acting contact base for electrical equipment as described in claim 2, characterized in that, Each of the cross screws (22) can move up and down through the threaded groove (21), and each of the cross screws (22) has an upper contact energized piece (23) on its circumferential surface.

4. The slow-acting contact base for electrical equipment as described in claim 3, characterized in that, Each of the upper contact energized pieces (23) has a rotating groove (24) inside, and each of the rotating grooves (24) is located on the circumferential surface of the cross screw (22) for rotational installation.

5. A slow-acting contact base for electrical equipment as described in claim 4, characterized in that, Each of the rotating slots (24) is located at a position on the surface of the cross screw (22) where there are no threads, and the inner wall of the wiring cavity (12) is symmetrically provided with sliding grooves (25).

6. A slow-acting contact base for electrical equipment as described in claim 1, characterized in that, Each of the sliders (28) is located inside the groove (25), each of the sliders (28) is slidably mounted to the groove (25), and each of the sliders (28) is partially exposed inside the wiring cavity (12).

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