Explosion-proof quick-plug sunflower patch board connecting mechanism

Abstract

The utility model discloses an explosion-proof type quick-plug sunflower patch board connecting mechanism, which relates to the technical field of electric actuators, and comprises an electric actuator shell, a junction box and a junction device, the electric actuator shell is used for placing an electric actuator, the junction box is positioned at the upper end part of the electric actuator shell, and the junction box is positioned at the lower end part of the electric actuator shell. The wiring device is vertically arranged and located in the junction box, the wiring device comprises a plurality of terminal pieces and a connecting piece, the plurality of terminal pieces are arranged in parallel and are fixedly connected in the connecting piece, the terminal pieces are used for connecting cables, the connecting piece is located in the junction box, and the lower end part of the connecting piece is encapsulated by epoxy resin; the junction box is provided with a plurality of pressure relief openings in the transverse direction, buffer parts are arranged in the pressure relief openings, the buffer parts block the pressure relief openings in the non-working state, and when the electric actuator expands thermally, the buffer parts move in the direction away from the junction box and make the air pressure in a shell of the electric actuator reduced. The effect of improving the working stability of the electric actuator is achieved.

Description

Technical Field

[0001] This utility model relates to the field of electric actuator technology, and in particular to an explosion-proof quick-connect sunflower terminal block connection mechanism. Background Technology

[0002] Currently, electric actuators are an essential component of automatic control systems. Their function is to receive control signals from the controller, change the magnitude of the controlled medium, and thus maintain the controlled variable at the required value or within a certain range.

[0003] Related technology can be found in Chinese patent application CN213845549U, which discloses a sunflower-shaped terminal block for electric actuators, relating to the field of electric actuator technology. This sunflower-shaped terminal block includes an electric actuator housing, a motor housing mounted on one side of the housing, and a junction box mounted on the other side. A terminal block is installed inside the junction box. The terminal block includes a housing and a base. Openings are evenly distributed on one side of the housing, and wire protective sleeves are installed within these openings. Multiple terminals that mate with the openings are mounted on one side of the base. This sunflower-shaped terminal block, with its terminal block within the junction box, allows for the connection of a larger number of terminals, increasing the actuator's terminal reception capacity and improving its practicality. The included limiting grooves and blocks allow users to easily separate the terminal block housing from the base, facilitating maintenance and improving efficiency.

[0004] Regarding the aforementioned technologies, during operation, the cable is plugged into the junction box. Because electric actuators are used, problems such as overload, short circuit, and overheating are prone to occur during use. These problems may lead to explosions of the electric actuators, resulting in poor operational stability. Therefore, there is an urgent need for an explosion-proof quick-connect sunflower-shaped junction box connection mechanism to improve the operational stability of electric actuators. Utility Model Content

[0005] To improve the working stability of electric actuators, this application provides an explosion-proof quick-connect sunflower terminal block connection mechanism.

[0006] This application provides an explosion-proof quick-connect sunflower terminal block connection mechanism, which adopts the following technical solution:

[0007] An explosion-proof quick-connect sunflower-shaped junction box connection mechanism includes an electric actuator housing, a junction box, and a wiring device. The electric actuator housing houses the electric actuator. The junction box is located at the upper end of the electric actuator housing. The wiring device is vertically arranged and located inside the junction box for fixing cables. The wiring device includes several terminal pieces and connectors. The terminal pieces are arranged parallel to each other and fixedly connected inside the connectors. The terminal pieces are used to connect cables. The connectors are located inside the junction box. The lower end of the connectors is potted with epoxy resin. The junction box has several pressure relief ports opened horizontally. Each pressure relief port is equipped with a buffer. When the buffer is not in operation, it blocks the pressure relief ports. When the electric actuator undergoes thermal expansion, the buffer moves away from the junction box, reducing the air pressure inside the electric actuator housing.

[0008] By adopting the above technical solution, the electric actuator housing and junction box are used to store the wiring device, the connector is used to fix the cable, and the terminal piece is used to connect the cable. Epoxy resin has excellent electrical insulation properties, which can reduce problems such as short circuits when the electric actuator is working. When problems such as overheating occur inside the electric actuator, the hot air flow pushes the buffer to slide in the pressure relief port, which helps to reduce the probability of explosion when the electric actuator is working and improves the working stability of the electric actuator.

[0009] Optionally, the connectors include a sunflower terminal block one and a sunflower terminal block two. Sunflower terminal block one is located inside the electric actuator housing, and sunflower terminal block two is located inside the junction box and above the electric actuator housing. The terminal components include a terminal plug and a terminal socket. The terminal plug is fixedly connected to the inside of sunflower terminal block one, and the terminal socket is fixedly connected to the upper end of sunflower terminal block two and passes through sunflower terminal block two. When the electric actuator is working, the terminal plug is inserted into the corresponding terminal socket and is detachably connected to the terminal socket.

[0010] By adopting the above technical solution, when Sunflower Terminal 2 is spliced ​​with Sunflower Terminal 1, Sunflower Terminal 2 drives the terminal socket and terminal plug to be spliced. The terminal plug and terminal socket can be detached, which improves the convenience of cable position adjustment.

[0011] Optionally, the upper end of the electric actuator housing is uniformly fixed with several screws along the circumference, and the screws are arranged vertically. The lower end of the sunflower terminal block 2 is provided with several positioning holes along the circumference, and the positioning holes correspond one-to-one with the screws. When the sunflower terminal block 1 and the sunflower terminal block 2 are spliced, the screws pass through the corresponding positioning holes and position the sunflower terminal block 2. The sunflower terminal block 2 is slidably connected to the screws vertically.

[0012] By adopting the above technical solution, when the cable above the Sunflower Terminal Block II is tangled, the angle of the Sunflower Terminal Block II can be adjusted by rotating the Sunflower Terminal Block II and passing the screw through different positioning holes, thereby improving the neatness of the cable line when the electric actuator is working.

[0013] Optionally, a number of clamping plates are fixed circumferentially at the lower end of the terminal socket. The clamping plates are arranged vertically and made of deformable material. When the electric actuator is working, the terminal plug is located between the clamping plates.

[0014] By adopting the above technical solution, several clamping plates cooperate to tighten the terminal plug, thereby improving the connection stability between the terminal plug and the terminal socket.

[0015] Optionally, using the above technical solution, a plug is fixedly provided at the upper end of the terminal plug. The plug is arranged vertically, and when the electric actuator is working, the plug fits into the terminal socket.

[0016] By adopting the above technical solution, when the terminal plug is located between several clamping plates, the plug block fits into the terminal socket, thereby improving the contact stability between the terminal socket and the terminal plug.

[0017] Optionally, a connecting cylinder is rotatably connected to the outer side of the sunflower terminal block. The connecting cylinder is located between the electric actuator housing and the sunflower terminal block. The connecting cylinder is provided with a vertical limiting component and a circumferential limiting component. The vertical limiting component is used to limit the vertical displacement of the connecting cylinder, and the circumferential limiting component is used to limit the rotation of the sunflower terminal block.

[0018] By adopting the above technical solution, the initial orientation of the sunflower terminal block can be adjusted by rotating it along the axis of the connecting cylinder. The vertical limiting component limits the vertical displacement of the sunflower terminal block, and the circumferential limiting component limits the circumferential rotation of the sunflower terminal block, thereby improving the positioning accuracy of the wiring device.

[0019] Optionally, the vertical limiting component includes several support blocks and a retaining ring for holes. The support blocks are fixedly connected to the inner side of the electric actuator housing and are evenly distributed along the circumference of the electric actuator housing. The support blocks are located below the connecting cylinder and fit against the connecting cylinder. The retaining ring for holes is fixedly connected to the inner side of the electric actuator housing and is located above the connecting cylinder and fits against the connecting cylinder.

[0020] By adopting the above technical solution, the retaining ring and the support block cooperate to limit the axial displacement of the connecting cylinder, thereby improving the stability of the electric actuator during operation.

[0021] Optionally, the circumferential limiting component includes a limiting gasket, a limiting groove 1 is provided at the upper end of the connecting cylinder, a limiting groove 2 is provided on the sunflower terminal block 1 and connected to the limiting groove 1, and a limiting groove 3 is provided on the inner side of the electric actuator housing. The limiting groove 1, limiting groove 2 and limiting groove 3 are connected to form a positioning groove, and the limiting gasket is located in the positioning groove. The limiting gasket is used to limit the circumferential rotation of the sunflower terminal block 1.

[0022] By adopting the above technical solution, the limiting gasket is located inside the positioning groove formed by the interconnection of limiting groove one, limiting groove two and limiting groove three. The limiting gasket restricts the rotation between the connecting cylinder and the sunflower terminal block one and the electric actuator housing, thereby improving the stability of the electric actuator during operation.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. Epoxy resin has excellent electrical insulation properties, which can reduce leakage caused by short circuits and other problems during the operation of electric actuators. When overheating occurs inside the electric actuator, the gas inside the electric actuator expands due to heat, and the hot air flow pushes the buffer to slide in the pressure relief port, reducing the gas pressure inside the electric actuator and keeping the gas pressure inside and outside the electric actuator housing consistent. This helps to reduce the probability of explosion during the operation of the electric actuator and improves the stability of the electric actuator operation.

[0025] 2. The position of the sunflower terminal block II can be adjusted by passing the screw through different positioning holes, which reduces the probability of the cables getting tangled and improves the neatness of the cables when the electric actuator is working.

[0026] 3. The terminal plug and terminal socket are detachable. When the electric actuator is working, several clamping plates clamp the terminal plug, and the plug block fits into the terminal socket, which improves the contact stability of the terminal socket and terminal plug. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of an explosion-proof quick-connect sunflower junction box connection mechanism.

[0028] Figure 2 This is a schematic diagram designed to highlight the internal structure of the electric actuator housing.

[0029] Figure 3 yes Figure 2 An enlarged schematic diagram of part A in the middle.

[0030] Figure 4 This is a schematic diagram designed to highlight the internal structure of the terminal components.

[0031] Figure 5 This is a schematic diagram designed to highlight the connection between the electric actuator housing and the sunflower-shaped terminal block.

[0032] Explanation of reference numerals in the attached drawings: 1. Electric actuator housing; 11. Screw; 12. Support block; 13. Retaining ring for hole; 14. Limiting washer; 15. Positioning groove; 2. Junction box; 21. Buffer; 3. Wiring device; 31. Sunflower terminal block one; 311. Connecting cylinder; 32. Sunflower terminal block two; 321. Positioning hole; 33. Terminal piece; 331. Terminal plug; 332. Plug block; 333. Terminal socket; 334. Clamping plate. Detailed Implementation

[0033] The present application will be further described in detail below with reference to all the accompanying drawings.

[0034] This application discloses an explosion-proof quick-connect sunflower junction box connection mechanism. Example

[0035] Reference Figure 1 and Figure 2 An explosion-proof quick-connect sunflower-shaped junction box connection mechanism includes an electric actuator housing 1, a junction box 2, and a wiring device 3. The electric actuator housing 1 is horizontally arranged, and the junction box 2 is located at the upper end of the electric actuator housing 1. The junction box 2 is used to store the wiring device 3, which is vertically arranged and located inside the junction box 2. The wiring device 3 is used to fix cables. The wiring device 3 includes a connector and multiple terminal pieces 33. The connector is located inside the junction box 2 and is used to fix the terminal pieces 33. The multiple terminal pieces 33 are parallel to each other and fixedly connected inside the connector. The terminal pieces 33 are used to connect cables.

[0036] Reference Figure 2 The connector includes a sunflower-shaped terminal block 31 and a second sunflower-shaped terminal block 32. The first sunflower-shaped terminal block 31 is located inside the electric actuator. A connecting cylinder 311 is rotatably connected to the outside of the first sunflower-shaped terminal block 31. The connecting cylinder 311 is located between the electric actuator housing 1 and the first sunflower-shaped terminal block 31. The first sunflower-shaped terminal block 31 rotates around the axis of the connecting cylinder 311 to adjust its initial orientation, improving the positioning accuracy of the wiring device 3. The connecting cylinder 311 is equipped with a vertical limiting component and a circumferential limiting component. The vertical limiting component limits the vertical displacement of the connecting cylinder 311, and the circumferential limiting component limits the rotation of the first sunflower-shaped terminal block 31.

[0037] Reference Figure 2 The vertical limiting component includes multiple support blocks 12, which are fixedly connected to the inner side of the electric actuator housing 1 and are evenly distributed around the circumference of the electric actuator housing 1. The support blocks 12 are located below the connecting cylinder 311 and fit against the connecting cylinder 311. The multiple support blocks 12 cooperate to support the connecting cylinder 311, which improves the stability of the sunflower terminal block 31.

[0038] Reference Figure 2 and Figure 3 The vertical limiting component also includes a retaining ring 13 for holes. The retaining ring 13 for holes is fixedly connected to the inner side of the electric actuator housing 1. The retaining ring 13 for holes is located above the connecting cylinder 311 and fits against the connecting cylinder 311. The retaining ring 13 for holes and the support block 12 cooperate to limit the axial displacement of the connecting cylinder 311 and improve the working stability of the sunflower terminal block 31.

[0039] Reference Figure 2 and Figure 3 The circumferential limiting component includes a limiting gasket 14. A limiting groove 1 is provided at the upper end of the connecting cylinder 311. A limiting groove 2 is provided on the sunflower terminal block 31, which is connected to the limiting groove 1. A limiting groove 3 is provided on the inner side of the electric actuator housing 1. The limiting groove 1, the limiting groove 2 and the limiting groove 3 are connected to form a positioning groove 15. The limiting gasket 14 is located in the positioning groove 15 and between the connecting cylinder 311 and the sunflower terminal block 31. The limiting gasket 14 helps to reduce the probability of the sunflower terminal block 31 rotating during the operation of the electric actuator and improves the stability of the electric actuator during operation.

[0040] Reference Figure 2 and Figure 4 The second sunflower-shaped terminal block 32 is located inside the junction box 2 and above the electric actuator housing 1. The terminal component 33 includes a terminal plug 331 and a terminal socket 333. The terminal plug 331 is fixedly connected to the inside of the first sunflower-shaped terminal block 31, and the terminal socket 333 is fixedly connected to the upper end of the second sunflower-shaped terminal block 32 and passes through it. When the first sunflower-shaped terminal block 31 and the second sunflower-shaped terminal block 32 are spliced, the second sunflower-shaped terminal block 32 drives the terminal socket 333 to splice with the terminal plug 331. The terminal plug 331 is inserted into the corresponding terminal socket 333 and is detachably connected to the terminal socket 333, which improves the convenience of cable position adjustment.

[0041] Reference Figure 4 Multiple clamping pieces 334 are fixedly provided circumferentially at the lower end of the terminal socket 333. The multiple clamping pieces 334 are arranged vertically and are made of deformable material. When the terminal plug 331 is located inside the terminal socket 333, the multiple clamping pieces 334 tighten the terminal plug 331. A plugging block 332 is fixedly provided at the upper end of the terminal plug 331. The plugging block 332 is arranged vertically and fits against the terminal socket 333, which improves the contact stability between the terminal socket 333 and the terminal plug 331.

[0042] Reference Figure 5Multiple screws 11 are evenly fixed along the circumference of the upper end of the electric actuator housing 1. The screws 11 are arranged vertically. Multiple positioning holes 321 are opened along the circumference of the lower end of the sunflower terminal block 32. The positioning holes 321 correspond one-to-one with the screws 11. The position of the sunflower terminal block 32 can be adjusted by the screws 11 being located in different positioning holes 321. The sunflower terminal block 32 is slidably connected to the screws 11 vertically. When the cable above the sunflower terminal block 32 is tangled, the sunflower terminal block 32 is raised and rotated to make the screws 11 pass through different positioning holes 321, thereby adjusting the angle of the sunflower terminal block 32 and improving the neatness of the cable line when the electric actuator is working.

[0043] Reference Figure 1 The lower end of the sunflower-shaped junction box 31 is encapsulated with epoxy resin. Epoxy resin has excellent electrical insulation properties, which can reduce leakage caused by short circuits and other problems during the operation of the electric actuator. Multiple pressure relief ports are opened on the outside of the junction box 2, and buffer components 21 are installed inside these ports to seal them. When overheating occurs inside the electric actuator, the gas inside expands due to heat, and the hot airflow pushes the buffer components 21 to slide away from the pressure relief ports, reducing the gas pressure inside the electric actuator. This helps to reduce the probability of explosion during operation and improves the stability of the electric actuator.

[0044] The implementation principle of the explosion-proof quick-connect sunflower terminal block connection mechanism in this application embodiment is as follows: the support block 12 and the hole retaining ring 13 cooperate to limit the vertical displacement of the first sunflower terminal block 31, and the limiting gasket 14 limits the circumferential rotation of the first sunflower terminal block 31. When the second sunflower terminal block 32 is spliced ​​with the first sunflower terminal block 31, the second sunflower terminal block 32 drives the terminal socket 333 to splice with the terminal plug 331. The multiple clamping pieces 334 at the lower end of the terminal socket 333 tighten the terminal plug 331, and the insertion block 332 at the upper end of the terminal plug 331 fits against the terminal socket 333. The contact stability between the terminal socket 333 and the terminal plug 331 is improved. The screw 11 can be used to adjust the orientation of the sunflower terminal block 32 by passing through different positioning holes 321. Epoxy resin has excellent electrical insulation properties, which can reduce leakage caused by short circuits and other problems during the operation of the electric actuator. When overheating occurs in the electric actuator, the gas inside the electric actuator expands due to heat. The hot airflow pushes the buffer 21 to slide away from the pressure relief port, which reduces the gas pressure inside the electric actuator. This helps to reduce the probability of explosion during the operation of the electric actuator and improves the stability of the electric actuator.

[0045] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An explosion-proof quick-connect sunflower junction box connection mechanism, comprising an electric actuator housing (1), a junction box (2), and a wiring device (3), wherein the electric actuator housing (1) is used to house the electric actuator, the junction box (2) is located at the upper end of the electric actuator housing (1), and the wiring device (3) is vertically arranged and located inside the junction box (2) for fixing cables, characterized in that: The wiring device (3) includes a connector and several terminal pieces (33). The connector is located inside the junction box (2). Several terminal pieces (33) are arranged parallel to each other and fixedly connected inside the connector. The terminal pieces (33) are used to connect cables. The lower end of the connector is potted with epoxy resin. The junction box (2) has several pressure relief ports opened in the transverse direction. The pressure relief ports are equipped with buffer pieces (21). The buffer pieces (21) seal the pressure relief ports when not in operation. When the electric actuator undergoes thermal expansion, the buffer pieces (21) move away from the junction box (2) and reduce the air pressure inside the electric actuator housing (1).

2. The explosion-proof quick-connect sunflower terminal block connection mechanism according to claim 1, characterized in that: The connector includes a sunflower terminal block one (31) and a sunflower terminal block two (32). The sunflower terminal block one (31) is located inside the electric actuator housing (1), and the sunflower terminal block two (32) is located inside the junction box (2) and above the electric actuator housing (1). The terminal component (33) includes a terminal plug (331) and a terminal socket (333). The terminal plug (331) is fixedly connected to the inside of the sunflower terminal block one (31), and the terminal socket (333) is fixedly connected to the upper end of the sunflower terminal block two (32) and passes through the sunflower terminal block two (32). When the electric actuator is working, the terminal plug (331) is inserted into the corresponding terminal socket (333) and is detachably connected to the terminal socket (333).

3. The explosion-proof quick-connect sunflower terminal block connection mechanism according to claim 2, characterized in that: The upper end of the electric actuator housing (1) is uniformly fixed with a number of screws (11) along the circumference. The screws (11) are arranged vertically. The lower end of the sunflower terminal block (32) is provided with a number of positioning holes (321) along the circumference. The positioning holes (321) correspond one-to-one with the screws (11). When the sunflower terminal block (31) and the sunflower terminal block (32) are spliced, the screws (11) pass through the corresponding positioning holes (321) and position the sunflower terminal block (32). The sunflower terminal block (32) slides vertically connected to the screws (11).

4. The explosion-proof quick-connect sunflower terminal block connection mechanism according to claim 2, characterized in that: The lower end of the terminal socket (333) is fixed with a plurality of clamping pieces (334) along the circumferential direction. The plurality of clamping pieces (334) are arranged vertically and are made of deformable material. When the electric actuator is working, the terminal plug (331) is located between the plurality of clamping pieces (334).

5. The explosion-proof quick-connect sunflower terminal block connection mechanism according to claim 4, characterized in that: The upper end of the terminal plug (331) is fixed with a plug block (332), which is arranged vertically. When the electric actuator is working, the plug block (332) is in contact with the terminal socket (333).

6. The explosion-proof quick-connect sunflower terminal block connection mechanism according to claim 2, characterized in that: A connecting cylinder (311) is rotatably connected to the outside of the sunflower terminal block (31). The connecting cylinder (311) is located between the electric actuator housing (1) and the sunflower terminal block (31). The connecting cylinder (311) is provided with a vertical limiting member and a circumferential limiting member. The vertical limiting member is used to limit the vertical displacement of the connecting cylinder (311), and the circumferential limiting member is used to limit the rotation of the sunflower terminal block (31).

7. The explosion-proof quick-connect sunflower terminal block connection mechanism according to claim 6, characterized in that: The vertical limiting component includes several support blocks (12) and a retaining ring (13) for holes. Several support blocks (12) are fixedly connected to the inner side of the electric actuator housing (1) and are evenly distributed along the circumference of the electric actuator housing (1). The support blocks (12) are located below the connecting cylinder (311) and fit against the connecting cylinder (311). The retaining ring (13) for holes is fixedly connected to the inner side of the electric actuator housing (1) and is located above the connecting cylinder (311) and fits against the connecting cylinder (311).

8. The explosion-proof quick-connect sunflower terminal block connection mechanism according to claim 7, characterized in that: The circumferential limiting component includes a limiting pad (14), a limiting groove 1 is provided at the upper end of the connecting cylinder (311), a limiting groove 2 is provided on the sunflower terminal block 1 (31) and is connected to the limiting groove 1, a limiting groove 3 is provided on the inner side of the electric actuator housing (1), the limiting groove 1, the limiting groove 2 and the limiting groove 3 are connected to form a positioning groove (15), the limiting pad (14) is located in the positioning groove (15), and the limiting pad (14) is used to limit the circumferential rotation of the sunflower terminal block 1 (31).

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