A slow-moving contact seat for electrical equipment

Abstract

The present invention provides a slow-action contact seat for electrical equipment, relating to the technical field of contact seats, comprising a slow-action contact seat body, a wiring cavity being provided inside the slow-action contact seat body, an insulating isolation sheet being provided at the bottom of the wiring cavity, a plurality of lower contact power-carrying sheets being provided inside the wiring cavity, and a delay control structure being symmetrically fixedly installed on the upper end of the insulating isolation sheet. The delay control structure comprises a PCB board, and by arranging the PCB board on the insulating isolation sheet on the inner side of the slow-action contact seat body, and connecting lines between the lower contact power-carrying sheets and the PCB board, fine programmable control of the power-carrying time of the contacts of the slow-action contact seat body can be achieved. With the help of a pre-set program on the PCB board, the power-carrying time inside the corresponding lower contact power-carrying sheet can be flexibly and accurately adjusted according to different application scenarios and process requirements, so that it has a delayed slow-action characteristic. At the same time, the additional use of a time relay for time control can be avoided, thereby improving convenience.

Description

Technical Field

[0001] The present invention belongs to the technical field of contact seats, and more particularly, relates to a slow-moving contact seat for electrical equipment. Background Art

[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 works based on the principle of electromagnetic induction. When current flows through the coil of the relay, it will generate a magnetic field, which will attract the armature, and then cause the moving contact and the static contact of the contact seat to come into contact or separation, thereby achieving the circuit conduction, disconnection or switching function, and can achieve electrical isolation effect. For example, the control circuit and the high-voltage, high-current load circuit can be separated by the help of a relay to ensure that the low-voltage signal of the control circuit can safely and effectively control the operating status of the high-voltage load, providing safety protection for operators and control equipment.

[0003] The functions of conventional contact holders currently available on the market are often limited to power transmission. When faced with the need to control the speed of contact movement, this can usually only be achieved with the help of external time relays. However, time relays are not only large in overall size, but also require additional electrical wiring operations. This makes it extremely inconvenient to achieve the effect of delayed slow movement in non-time relay systems, and it is difficult to meet the demand for slow-action contact holders in practical applications. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides a slow-moving contact seat for electrical equipment to solve the above problems.

[0005] A slow-action contact seat for electrical equipment includes a slow-action contact seat body, a wiring cavity is provided inside the slow-action contact seat body, an insulating spacer is provided at the bottom of the wiring cavity, the insulating spacer is cross-shaped, and a plurality of lower contact power-carrying pieces are provided inside the wiring cavity, each of the lower contact power-carrying pieces is located at the four corners of the insulating spacer, and each of the lower contact power-carrying pieces is fixedly mounted to the insulating spacer:

[0006] A time delay control structure is symmetrically fixedly mounted on the upper end of the insulating spacer;

[0007] The delay control structure includes a PCB board, and connecting wires are symmetrically fixedly installed on the side walls of the two PCB boards, each of the connecting wires is connected to the lower contact power-carrying plate, and the two PCB boards are located between the lower contact power-carrying plates. The upper ends of the two PCB boards are provided with multiple wiring ports, and through grooves are symmetrically opened inside the wiring cavity. Communication sockets are provided on the side walls of the two PCB boards, and both of the communication sockets are located inside the through grooves.

[0008] Preferably, a thread groove is provided inside each of the lower contact power-carrying plates, a cross screw is threadedly installed inside each of the thread grooves, each of the cross screws can move up and down through the thread groove, and an upper contact power-carrying plate is provided on the circumferential surface of each of the cross screws.

[0009] Preferably, a rotation groove is provided inside each of the upper contact power-carrying plates, each of the rotation grooves is located on the circumferential surface of the cross screw for rotational installation, each of the rotation grooves is arranged at a position where there is no thread on the surface of the cross screw, and the inner wall of the wiring cavity is symmetrically provided with sliding grooves.

[0010] Preferably, each of the slide grooves is opened on the side wall of the lower contact power supply plate, and a limiting groove is symmetrically opened inside each of the slide grooves. A limiting block is slidably installed inside each of the limiting grooves, and a slider is fixedly installed between each of the limiting blocks.

[0011] Preferably, each of the sliders is located inside the slide groove, each of the sliders is slidably installed with the slide groove, each of the sliders is partially exposed inside the wiring cavity, each of the sliders is fixedly installed with the upper contact power supply plate, and an arc surface is provided at the bottom of the upper contact power supply plate.

[0012] Preferably, a sawtooth layer is fixedly mounted on the upper end of each lower contact current-carrying piece, and the shape of each sawtooth 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 the present invention, a PCB is provided on the insulating isolation sheet inside the slow-action contact holder body, and a connecting wire is connected between the lower contact energizing sheet and the PCB board, thereby achieving refined programmable control of the energizing time of the contacts of the slow-action contact holder body. With the help of a pre-set program 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 a delayed slow-action characteristic. At the same time, the use of an additional time relay for time control can be avoided, thereby improving convenience.

[0015] In the present invention, by providing a slide groove, when the worker rotates the cross screw to move up and down, the slider can be driven to slide inside the slide groove. At the same time, since the upper contact power supply piece and the cross screw are rotatably mounted, position limiting can be performed, thereby allowing the lower contact power supply piece and the upper contact power supply piece to overlap and clamp well.

[0016] In the present invention, by providing the sliding groove and the limiting groove, when the staff can rotate the cross screw to drive the upper contact power supply piece to move up and down, the upper contact power supply piece can drive the limiting block and the slider connected thereto to slide and limit in the sliding groove and the limiting groove respectively, which can ensure that when the cross screw is lowered, the upper contact power supply piece is driven to slide vertically smoothly, thereby increasing the pressure of the upper contact power supply piece and the lower contact power supply piece on the metal copper wire, thereby improving the stability of the cable connection;

[0017] In the present invention, since the lower side of the upper contact current-carrying piece is an arc-shaped surface, by providing a serrated layer on the lower contact current-carrying piece, and the shape of the serrated layer is adapted to the arc-shaped surface of the upper contact current-carrying piece, the clamping force of the upper contact current-carrying piece on the cable can be further improved, thereby avoiding the problem of unstable voltage transmission caused by looseness;

[0018] In the present invention, by setting one end of the sliding groove and the limiting groove to be opened through, when the upper contact power-carrying piece is deformed due to long-term use, the staff can use a screwdriver to turn the cross screw, driving the cross screw and the upper contact power-carrying 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. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0020] Figure 2 This is a schematic diagram of the three-dimensional connection explosion structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the three-dimensional structure of the slow-action contact seat body of the present invention;

[0022] Figure 4 This is a schematic diagram of the three-dimensional structure of the upper contact power supply sheet of the present invention;

[0023] Figure 5 This is a schematic diagram of the three-dimensional exploded structure of the slow-moving contact seat body of the present invention;

[0024] Figure 6 This is a schematic diagram of the three-dimensional explosion structure of the sawtooth layer of the present invention;

[0025] Figure 7 This is a cross-sectional view of the slow-action contact seat body of the present invention;

[0026] Figure 8 This invention Figure 7 A magnified view of the structure in Figure 2.

[0027] In the figure, the correspondence between the component names and the drawing numbers is: 11, slow-action contact seat body; 12, wiring cavity; 13, insulating spacer; 14, lower contact power-carrying plate; 15, PCB board; 16, connecting wire; 17, wiring port; 18, through slot; 19, communication socket; 21, threaded slot; 22, cross screw; 23, upper contact power-carrying plate; 24, rotating slot; 25, sliding slot; 26, limit slot; 27, limit block; 28, slider; 29, arc surface; 31, serrated layer. DETAILED DESCRIPTION

[0028] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0029] See also Figure 1 - Figure 8 The present invention provides a slow-action contact seat for electrical equipment, including a slow-action contact seat body 11, a wiring cavity 12 is provided inside the slow-action contact seat body 11, an insulating spacer 13 is provided at the bottom of the wiring cavity 12, and the insulating spacer 13 is cross-shaped. A plurality of lower contact power supply plates 14 are provided inside the wiring cavity 12, each lower contact power supply plate 14 is located at the four corners of the insulating spacer 13, and each lower contact power supply plate 14 is fixedly installed with the insulating spacer 13:

[0030] A time delay control structure is symmetrically fixedly mounted on the upper end of the insulating spacer 13;

[0031] 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 power supply sheet 14. The two PCB boards 15 are located between the lower contact power supply sheet 14. The upper ends of the two PCB boards 15 are provided with multiple wiring ports 17. The wiring cavity 12 is symmetrically penetrated with a through groove 18. The side walls of the two PCB boards 15 are provided with a communication socket 19. The two communication sockets 19 are located inside the through groove 18. Through the inside of the slow-moving contact seat body 11, the communication socket 19 is connected to the lower contact power supply sheet 14. A PCB board 15 is provided on the insulating isolation sheet 13, and a connecting line 16 is connected between the lower contact power-on sheet 14 and the PCB board 15 to realize fine programmable control of the power-on time of the contact of the slow-action contact seat body 11. With the help of the pre-set program of the PCB board 15, the power-on time inside the corresponding lower contact power-on sheet 14 can be flexibly and accurately adjusted according to different application scenarios and process requirements, so that it has a delayed slow-action characteristic. At the same time, it can also avoid the additional use of time relays for time control, thereby improving convenience.

[0032] A threaded groove 21 is provided inside each lower contact power-carrying piece 14, and a cross screw 22 is threadedly installed inside each threaded groove 21. Each cross screw 22 can move up and down through the threaded groove 21. An upper contact power-carrying piece 23 is provided on the circumferential surface of each cross screw 22. A rotation groove 24 is provided inside each upper contact power-carrying piece 23. Each rotation groove 24 is located on the circumferential surface of the cross screw 22 for rotational installation. Each rotation groove 24 is set at a position where there is no thread on the surface of the cross screw 22. The inner wall of the wiring cavity 12 is symmetrically provided with a slide groove 25. Each slide groove 25 is provided on the side wall of the lower contact power-carrying piece 14. A limiting groove 26 is symmetrically provided inside each slide groove 25. A limiting block 27 is slidably installed inside each limiting groove 26. By providing the slide groove 25, the staff can rotate the cross screw 22. When moving up and down, the slider 28 can be driven to slide inside the slide groove 25. At the same time, since the upper contact power-carrying piece 23 and the cross screw 22 are rotatably installed, they can be limited, so that the lower contact power-carrying piece 14 and the upper contact power-carrying piece 23 can be better overlapped and clamped. By setting the slide groove 25 and the limiting groove 26, the staff can rotate the cross screw 22 to drive the upper contact power-carrying piece 23 to move up and down. The upper contact power-carrying piece 23 can drive the limiting block 27 and the slider 28 connected thereto to slide and limit inside the slide groove 25 and the limiting groove 26 respectively, which can ensure that when the cross screw 22 descends, the upper contact power-carrying piece 23 is driven to slide vertically smoothly, thereby increasing the pressure of the upper contact power-carrying piece 23 and the lower contact power-carrying piece 14 on the metal copper wire to improve the stability of the cable connection.

[0033] A slider 28 is fixedly installed between each limit block 27, and each slider 28 is located inside the slide groove 25. Each slider 28 is slidably installed with the slide groove 25, and 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 power-carrying piece 23 is deformed after long-term use, the staff can use a screwdriver to turn the cross screw 22, driving the cross screw 22 and the upper contact power-carrying piece 23 on the cross screw 22, the limit block 27 and the slider 28 to directly detach from the slow-moving contact seat body 11, thereby improving maintainability and facilitating replacement.

[0034] Each slider 28 is fixedly mounted on the upper contact power-carrying piece 23. An arc-shaped surface 29 is provided at the bottom of the upper contact power-carrying piece 23. A serrated layer 31 is fixedly mounted on the upper end of each lower contact power-carrying piece 14. The shape of each serrated layer 31 is adapted to the shape of the arc-shaped surface 29. Since the upper contact power-carrying piece 23 has an arc-shaped surface 29 below, by providing a serrated layer 31 on the lower contact power-carrying piece 14, and the shape of the serrated layer 31 is adapted to the arc-shaped surface 29 of the upper contact power-carrying piece 23, the clamping force of the upper contact power-carrying piece 23 on the cable can be further improved, thereby avoiding the problem of unstable voltage transmission caused by looseness.

[0035] PCB board 15: PCB board 15 is a prior art, and its interior is mainly composed of a microcontroller, a timing circuit, and a control circuit.

[0036] In the first step, the staff starts the operation. They first pick up the wire strippers and place the wire end in the appropriate position of the wire strippers. Then, they use the blade of the wire strippers to remove the insulating sheath of the wire end, so that the metal copper wire is completely exposed. Then, the staff carefully places the exposed metal copper wire between the lower contact power-carrying piece 14 and the arc surface 29 at the bottom of the upper contact power-carrying piece 23 inside the wiring cavity 12, ensuring that the metal copper wire is in the accurate predetermined position between the lower contact power-carrying piece 14 and the arc surface 29. After that, the staff picks up the screwdriver, inserts the screwdriver head into the cross screw 22, and then starts to rotate the screwdriver. Due to the cross screw 22 and the thread groove 29 of the lower contact power-carrying piece 14, the staff can easily get rid of the problem. 1 forms a thread transmission structure. Under the action of 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 thereto to slide inside the slide groove 25 and the limit groove 26 respectively. At the same time, because the cross screw 22 is rotationally connected to the upper contact power supply piece 23 through the rotation 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 power supply piece 23 to slide vertically smoothly without deflection or shaking.

[0037] By setting the slide groove 25, when the staff 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 power-carrying piece 23 and the cross screw 22 are rotatably installed, their movement is limited, so that the lower contact power-carrying piece 14 and the upper contact power-carrying piece 23 can be better overlapped and clamped. Moreover, after setting the slide groove 25 and the limiting groove 26, when the staff rotates the cross screw 22 to drive the upper contact power-carrying piece 23 to move up and down, the upper contact power-carrying 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 the upper contact power-carrying piece 23 can slide smoothly vertically when the cross screw 22 is lowered. In this way, the pressure of the upper contact power-carrying piece 23 and the lower contact power-carrying piece 14 on the metal copper wire can be increased, 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 arcuate surface 29 below the upper contact current-carrying piece 23 will gradually approach the serrated layer 31 on the lower contact current-carrying piece 14 as the cross screw 22 rotates and descends. When the arcuate surface 29 contacts the serrated layer 31, the serrated layer 31 will tightly engage and squeeze the arcuate surface 29. Through this engagement 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, allowing current to stably pass through the wiring part, and preventing current interruption or instability caused by poor contact;

[0039] By providing a serrated layer 31 on the lower contact power-carrying plate 14, and the shape of the serrated layer 31 is adapted to the curved surface 29 of the upper contact power-carrying plate 23, this structural design can further improve the clamping force of the upper contact power-carrying plate 23 on the cable, effectively preventing the problem of unstable voltage transmission caused by loose cables, and ensuring the normal operation and safe use of electrical equipment.

[0040] In the third step, the staff pre-inserts the communication line into the communication socket 19. During the insertion process, it is necessary to ensure that the communication line plug is tightly connected to the interface inside the communication socket 19 without looseness or poor contact. Then, the staff programs the PCB board 15 according to the program required by the process. During the programming process, the staff must accurately set various parameters according to the process requirements to determine the power-on time requirements of the lower contact power-on piece 14. When it is necessary to power on a specific lower contact power-on piece 14, the PCB board 15 will start the control process according to the internal preset program logic. The PCB board 15 implements 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 accurately control the timing of the output signal. When power is required, the current will be delayed strictly according to the time parameters set by the PCB board 15 program when it is turned on, so as to meet the needs of precise control of the power-on 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 arranging a PCB board 15 on the insulating isolation sheet 13 on the inner side of the slow-action contact seat body 11 and connecting a connecting line 16 between the lower contact power-on sheet 14 and the PCB board 15, it is possible to achieve fine programmable control of the power-on time of the contact of the slow-action contact seat body 11. With the help of the pre-set program on the PCB board 15, the power-on time inside the corresponding lower contact power-on sheet 14 can be flexibly and accurately adjusted according to different application scenarios and process requirements, so that it has a delayed slow-action characteristic to meet various complex work requirements. At the same time, this design also avoids the additional use of time relays for time control, reduces the complexity and cost of the equipment, and thus improves the convenience of operation, making it convenient for staff to install and debug the equipment.

[0042] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed form. Many modifications and changes are obvious to those skilled in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for specific purposes.

Claims

1. A slow-action contact seat for electrical equipment, comprising a slow-action contact seat body (11), a wiring cavity (12) provided inside the slow-action contact seat body (11), an insulating spacer (13) provided at the bottom of the wiring cavity (12), the insulating spacer (13) being cross-shaped, a plurality of lower contact conducting plates (14) provided inside the wiring cavity (12), each of the lower contact conducting plates (14) being located at four corners of the insulating spacer (13), and each of the lower contact conducting plates (14) being fixedly mounted to the insulating spacer (13), characterized in that: A time delay control structure is symmetrically fixedly mounted on the upper end of the insulating spacer (13); The delay control structure comprises a PCB board (15), and connecting wires (16) are symmetrically fixedly installed on the side walls of the two PCB boards (15), and each connecting wire (16) is connected to the lower contact power supply sheet (14). The two PCB boards (15) are located between the lower contact power supply sheets (14). The upper ends of the two PCB boards (15) are provided with a plurality of wiring ports (17). The wiring cavity (12) is symmetrically provided with through grooves (18). The side walls of the two PCB boards (15) are provided with communication sockets (19), and the two communication sockets (19) are located inside the through grooves (18). A threaded groove (21) is provided inside each lower contact power supply sheet (14), and each threaded groove (21) is provided inside. 1) A cross screw (22) is threadedly installed inside, and each cross screw (22) can move up and down through the thread groove (21). The circumferential surface of each cross screw (22) is provided with an upper contact power supply plate (23), and a rotation groove (24) is opened inside each upper contact power supply plate (23). Each rotation groove (24) is located on the circumferential surface of the cross screw (22) for rotation installation, and each rotation groove (24) is set at a position where there is no thread on the surface of the cross screw (22). The inner wall of the wiring cavity (12) is symmetrically provided with a slide groove (25), and each slide groove (25) is opened on the side wall of the lower contact power supply plate (14). A limit groove (26) is symmetrically opened inside each slide groove (25).

2. A slow-action contact seat for electrical equipment according to claim 1, characterized in that: A limiting block (27) is slidably installed inside each limiting groove (26), and a sliding block (28) is fixedly installed between each limiting block (27).

3. A slow-action contact seat for electrical equipment according to claim 2, characterized in that: Each of the sliders (28) is located inside the slide groove (25), each of the sliders (28) is slidably mounted with the slide groove (25), and each of the sliders (28) is partially exposed inside the wiring cavity (12).

4. A slow-action contact seat for electrical equipment as claimed in claim 3, characterized in that: Each of the sliders (28) is fixedly mounted on the upper contact power supply plate (23), and an arc-shaped surface (29) is provided at the bottom of the upper contact power supply plate (23).

5. A slow-action contact seat for electrical equipment according to claim 4, characterized in that: A sawtooth layer (31) is fixedly mounted on the upper end of each lower contact current-carrying sheet (14), and the shape of each sawtooth layer (31) is adapted to the shape of the arc surface (29).

Images