Isolating operating switch device

Abstract

The utility model relates to an isolated operation switch device. Including operation subassembly and execution component, execution component includes lower box body and upper box body, is equipped with a plurality of support plates in the inner chamber middle part of lower box body along the length direction, is equipped with recess in the top middle position of each support plate, still includes translation base, the bottom of translation base is located in the recess of support plate, is equipped with the pole lever support in the side portion of translation base and installs pole lever and drive shaft pole on the pole lever support, and the pole lever passes through the longitudinal through -hole set up in the middle part of translation base, and operation subassembly drives pole lever support to rotate, and the pole lever drives translation base to move left or right, is installed on the translation base multiple sets of contact mechanism, is installed multiple sets of terminal strip in the corresponding position of the top of lower box body, and when translation base moves to the on position, each contact mechanism will connect corresponding terminal strip. The utility model provides an isolated operation switch device, improves the action stability of execution component, improves product quality.

Description

Technical Field

[0001] This utility model belongs to the field of electrical equipment technology, and in particular relates to an isolating operation switch device. Background Technology

[0002] In equipment such as explosion-proof control boxes, considering explosion-proof requirements, the switching devices installed inside the box need to be operated from outside the box, i.e., isolated switch control. These switching devices can be used in harsh and relatively dangerous explosive environments, such as in the coal mining industry, paint or ink manufacturers, timber processing plants, cement plants, shipping, and sewage treatment. These switching devices are also suitable for external electrical equipment, such as motors, pumps, and lighting equipment, or in explosive environments that produce flammable gases, vapors, mists, or flammable dust.

[0003] The aforementioned isolating switch typically consists of an operating component and an actuating component. The actuating component includes multiple parallel contact mechanisms. The operating component drives the contact mechanisms to move synchronously to control the on / off state of multiple circuits. Existing isolating switch devices have poor stability in the operation of their actuating components, necessitating structural optimization. Summary of the Invention

[0004] The purpose of this invention is to provide an isolation operation switch device to improve the stability of the actuator and enhance product quality.

[0005] The technical solution adopted by this utility model is as follows: an isolation operation switch device, including an operation component and an execution component; the execution component includes a lower housing and an upper housing, with multiple support plates arranged along the length direction in the middle of the inner cavity of the lower housing, and a groove provided at the top center of each support plate, and also includes a translation base, the bottom of which is located in the groove of the support plate, a lever bracket provided on the side of the translation base, and a lever and a drive shaft mounted on the lever bracket, the lever passing through a longitudinally penetrating hole in the middle of the translation base, the operation component driving the lever bracket to rotate, the lever driving the translation base to move left or right; multiple sets of contact mechanisms are installed on the translation base, and multiple sets of terminal blocks are installed at corresponding positions on the top of the lower housing, when the translation base moves to the connected position, each contact mechanism connects the corresponding terminal block, and when the translation base moves to the disconnected position, each contact mechanism separates from the corresponding terminal block.

[0006] Preferably, the contact mechanism includes an electrode base located in the middle and contact electrodes installed on both sides of the electrode base. The electrode base is located in a mounting groove provided on the translation base, and the two sets of contact electrodes are respectively located on both sides of the translation base. The contact electrodes include two cylindrical long electrodes and two cylindrical short electrodes, wherein one set of cylindrical long electrodes and cylindrical short electrodes is located above, and the other set of cylindrical long electrodes and cylindrical short electrodes is located below. There is a strip-shaped gap between the two sets of electrodes for the horizontal wire of the terminal block to pass through.

[0007] Preferably, the contact mechanism on the translation base is provided in three sets, respectively located on the left, middle and right sides, and the wiring board on the lower box is provided in three sets, respectively located on the left, middle and right sides.

[0008] Preferably, a limit switch assembly and a terminal block are also installed on the side of the lower housing. A window is provided on the side wall of the lower housing. A trigger rod is provided at the bottom of the end of the sliding base and the trigger rod is located in the aforementioned window. The limit switch assembly includes a housing and two left and right contact switches installed in the housing. The contact switches are connected to the terminal block. When the trigger rod extends, the two contact switches are triggered. When the trigger rod retracts, the two contact switches are not triggered.

[0009] Preferably, the upper box has a hole in the middle for the drive shaft to pass through, and three sets of transparent windows are provided on the upper box, which are directly opposite to the three sets of wiring boards below; multiple sets of connecting seats are provided on the edges of both the lower box and the upper box, and the lower box and the upper box are fixedly connected by bolts located in each set of connecting seats.

[0010] Preferably, the lever bracket is bow-shaped, and the lever is installed between the ends of its top and bottom folding plates; a shaft seat with a square shaft hole in the middle is installed on both the top and bottom folding plates of the lever bracket, and the drive shaft is a square shaft with its lower part passing through the square shaft hole of the upper and lower shaft seats.

[0011] Preferably, the operating component includes a base and a knob located in the middle of the base. The root of the knob is cylindrical and located in the shaft hole at the center of the base. A sealing ring is provided between the root of the knob and the shaft hole of the base. A square slot is provided at the bottom center of the knob, and the upper end of the drive shaft is inserted into the square slot.

[0012] Preferably, a fixing plate is provided at the bottom of both ends of the lower box body, and a connecting groove for bolts to be inserted is provided at the end of the fixing plate.

[0013] The advantages and positive effects of this utility model are: This invention provides an isolating operation switch device. Compared with existing switch devices, the remote operation switch device of this invention has a support plate with grooves in the lower housing of its actuating component. Multiple sets of contact mechanisms are mounted on a translation base, and the translation base falls into the grooves of each support plate. A lever bracket and its lever, driven by a drive shaft, are used to translate the translation base, thus improving the operational stability of the actuating component. By improving the movement stability of the translation base, the engagement and disengagement of each set of contact mechanisms with each set of terminal blocks are smoother, improving the operating characteristics of the switch device and enhancing product quality. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a three-dimensional structural diagram of the operating component of this utility model, from a frontal view; Figure 3 This is a three-dimensional structural diagram of the operating component of this utility model, from a rear view. Figure 4 This is a three-dimensional structural diagram of the execution component of this utility model, from a top view; Figure 5 This is a schematic diagram of the internal structure of the execution component of this utility model, viewed from above; Figure 6 yes Figure 5 A schematic diagram of the middle contact mechanism, viewed from below.

[0015] In the picture: 1. Knob; 2. Base; 3. Drive shaft; 4. Lower housing; 5. Upper housing; 6. Terminal block; 7. Limit switch assembly; 8. Transparent window; 9. Terminal block; 10. Connector; 11. Fixing plate; 12. Positioning post; 13. Translation base; 14. Contact mechanism; 15. Support plate; 16. Shaft seat; 17. Lever; 18. Lever bracket; 19. Spring; 20. Contact switch; 21. Trigger rod. Detailed Implementation

[0016] To further understand the invention content, features and effects of this utility model, the following embodiments are provided in detail.

[0017] Please see Figure 1 The present invention relates to an isolating operation switch device, comprising an operating component and an actuating component. Typically, the operating component is mounted on the wall of an explosion-proof enclosure, while the actuating component is installed inside the enclosure. The operating component controls the actuating component to change its state, thereby achieving remote on / off control of the circuit, i.e., isolated on / off control.

[0018] Please see Figure 2 and Figure 3 It can be seen that: The operating components include a base 2 and a knob 1 located in the middle of the base 2. The root of the knob 1 is cylindrical and located in the shaft hole at the center of the base 2. A sealing ring is provided between the root of the knob 1 and the shaft hole of the base 2 to ensure the sealing characteristics of the mating position. Figure 3 As shown, connection holes are provided on both sides of the base 2. During installation, the base 2 is fixedly connected to the wall of the explosion-proof box with bolts. In order to improve the aesthetic effect, a decorative cover can be installed on the base 2 to cover the base 2 and the bolts inside.

[0019] Please see Figure 4 , Figure 5 and Figure 6 It can be seen that: The actuator includes a lower housing 4 and an upper housing 5, which are fastened together. In this embodiment, multiple sets of connecting seats 10 are provided on the edges of both the lower housing 4 and the upper housing 5, and the lower housing 4 and the upper housing 5 are fixedly connected by bolts located in each set of connecting seats 10. In this embodiment, fixing plates 11 are provided at the bottom of both ends of the lower housing 5, and connecting grooves for bolt insertion are provided at the ends of the fixing plates 11. During installation, the actuator is installed and fixed on the mounting base inside the explosion-proof box using multiple bolts located in the connecting grooves of the fixing plates 11.

[0020] In this embodiment, a plurality of positioning posts 12 are provided on the top edge of the lower box 4, and correspondingly, a plurality of positioning holes are provided at the corresponding positions on the bottom edge of the upper box 5. When the lower box 4 and the upper box 5 are fastened together, each positioning post 12 is inserted into each positioning hole.

[0021] Multiple support plates 15 are provided along the length direction in the middle of the inner cavity of the lower box 4. A groove is provided at the top center of each support plate 15. A translation base 13 is also included. The bottom of the translation base 13 is located in the groove of the support plate 15. The translation base 13 is used as a support base for multiple sets of contact mechanisms 14. The translation base 13 is operated by the operating component to move in the groove of each support plate 15, thereby driving each set of contact mechanisms 14 to move in translation.

[0022] A lever bracket 18 is provided on the side of the translation base 13, and a lever 17 and a drive shaft 3 are installed on the lever bracket 18. The lever 17 passes through a longitudinal through hole provided in the middle of the translation base 13. The operating component drives the lever bracket 18 to rotate through the drive shaft 3, and the lever 17 drives the translation base 13 to move to the left or right.

[0023] In this embodiment, the lever bracket 18 is bow-shaped and made of bent metal plate. The lever 17 is installed between the ends of its top and bottom folded plates. A shaft seat 16 with a square shaft hole in the center is installed on both the top and bottom folded plates of the lever bracket 18. The drive shaft 3 is a square shaft, and its lower part passes through the square shaft holes of the upper and lower shaft seats 16. In this embodiment, a square slot is provided at the bottom center of the knob 1. The upper end of the drive shaft 3 is inserted into this square slot. Thus, when the knob 1 is rotated from outside the box, the drive shaft 3 rotates synchronously with the knob 1, causing the lever bracket 18 to swing left or right. The lever 17 drives the translation base 13 to move translationally within the grooves of each support plate 15.

[0024] Multiple sets of contact mechanisms 14 are installed on the translation base 13, and multiple sets of terminal blocks 9 are installed at corresponding positions on the top of the lower housing 4. Each set of terminal blocks 9 includes two metal plates on the left and right. When the translation base 13 moves to the connected position, each contact mechanism 14 connects the corresponding terminal block 9, and each circuit is connected. When the translation base 13 moves to the disconnected position, each contact mechanism 14 separates from the corresponding terminal block 9, and each circuit is disconnected.

[0025] In this embodiment, the contact mechanism 14 includes an electrode base located in the middle and contact electrodes mounted on both sides of the electrode base. The electrode base is located in a mounting groove on a translation base 13. The two sets of contact electrodes are located on the left and right sides of the translation base 13, respectively, and cooperate with the terminal block 9 on their respective sides. The contact electrodes include two cylindrical long electrodes and two cylindrical short electrodes, one set of cylindrical long electrodes and cylindrical short electrodes is located above, and the other set of cylindrical long electrodes and cylindrical short electrodes is located below. There is a strip-shaped gap between the two sets of electrodes for the horizontal lines of the terminal block 9 to pass through. The structural design of the cylindrical long electrodes and cylindrical short electrodes helps to improve the reliability of the electrical connection with the terminal block 9.

[0026] In this embodiment, the contact mechanism 14 on the translation base 13 is provided in three sets, respectively located on the left, middle and right sides, and the wiring board 9 on the lower box 4 is provided in three sets, respectively located on the left, middle and right sides. Therefore, this remote operation switch device can control the on and off of three circuits at the same time.

[0027] In this embodiment, the upper box 5 has a hole in the middle for the drive shaft 3 to pass through. The upper box 5 has three sets of transparent windows 8 that are directly opposite to the three sets of wiring boards 9 below. The wiring status of each set of wiring boards 9 inside the box can be observed through each set of transparent windows 8.

[0028] A limit switch assembly 7 and a terminal block 6 are also installed on the side of the lower housing 4, with the terminal block 6 located above the limit switch assembly 7. A window is provided on the side wall of the lower housing 4, and a trigger rod 21 is provided at the bottom end of the sliding base 13, with the trigger rod 21 located inside the aforementioned window. The limit switch assembly 7 includes a housing and two left and right contact switches 20 installed inside the housing. The contact switches 20 are connected to the terminal block 6. When the trigger rod 21 extends, the two contact switches 20 are triggered; when the trigger rod 21 retracts, the two contact switches 20 are not triggered.

[0029] The purpose of setting the limit switch assembly 7 and the terminal block 6 is to provide a status detection function for this remote operation switch device. The terminal block 6 can be connected to the control center through a wiring harness: when the translation base 13 moves to the on position, the trigger rod 21 retracts, the two contact switches 20 are not triggered and there is no trigger signal, then the control center judges that this remote operation switch device is in the circuit on state. Conversely, when the translation base 13 moves to the off position, the trigger rod 21 extends, the two contact switches 20 are triggered and a trigger signal is generated, then the control center judges that this remote operation switch device is in the circuit off state.

[0030] In this embodiment, a spring 19 is provided inside the housing of the limit switch assembly 7. The spring 19 is located outside the end of the trigger rod 21. When the trigger rod 21 extends outward, the spring 19 further contracts, and conversely, when the trigger rod 21 retracts inward, the spring 19 further extends.

[0031] Installation and operation methods: The operating components are bolted to the wall of the explosion-proof box, and the actuator components are bolted to the mounting base inside the explosion-proof box. The end of the drive shaft 3 is inserted into the square slot at the center of the inner end of the knob 1. The three sets of cables for the three circuits are reliably connected to the respective terminal blocks 9. When the control circuit needs to be connected, the external operating knob 1 is rotated, which drives the drive shaft 3 to swing the lever bracket 18. The lever 17 drives the translation base 13 to move in a translational manner, and each set of contact mechanisms 14 engages with each set of terminal blocks 9 to achieve power connection. When the control circuit needs to be disconnected, the external operating knob 1 is rotated in the opposite direction, which drives the drive shaft 3 to swing the lever bracket 18 in the opposite direction. The lever 17 drives the translation base 13 to move in a translational manner in the opposite direction, and each set of contact mechanisms 14 separates from each set of terminal blocks 9 to achieve circuit disconnection.

Claims

1. An isolating operating switch device, comprising an operating component and an actuating component; characterized in that: The execution assembly includes a lower housing (4) and an upper housing (5). Multiple support plates (15) are provided along the length of the inner cavity of the lower housing (4). A groove is provided at the top center of each support plate (15). The assembly also includes a translation base (13), the bottom of which is located within the groove of the support plate (15). A lever bracket (18) is provided on the side of the translation base (13), and a lever (17) and a drive shaft (3) are mounted on the lever bracket (18). The lever (17) is formed by a lever located in the center of the translation base (13). A through hole is passed through, and the operating component drives the lever bracket (18) to rotate. The lever (17) drives the translation base (13) to move to the left or right. Multiple sets of contact mechanisms (14) are installed on the translation base (13), and multiple sets of terminal blocks (9) are installed at the corresponding positions on the top of the lower box (4). When the translation base (13) moves to the connected position, each contact mechanism (14) connects the corresponding terminal block (9). When the translation base (13) moves to the disconnected position, each contact mechanism (14) separates from the corresponding terminal block (9).

2. The isolating operation switch device as described in claim 1, characterized in that: The contact mechanism (14) includes an electrode base located in the middle and contact electrodes installed on both sides of the electrode base. The electrode base is located in the mounting groove set on the translation base (13). The two sets of contact electrodes are located on both sides of the translation base (13). The contact electrodes include two cylindrical long electrodes and two cylindrical short electrodes. One set of cylindrical long electrodes and cylindrical short electrodes is located above, and the other set of cylindrical long electrodes and cylindrical short electrodes is located below. There is a strip-shaped gap between the two sets of electrodes for the horizontal line of the terminal block (9) to pass through.

3. The isolating operation switch device as described in claim 2, characterized in that: The contact mechanism (14) on the translation base (13) is provided in three sets, which are respectively located on the left, middle and right sides. The wiring board (9) on the lower box (4) is provided in three sets, which are respectively located on the left, middle and right sides.

4. The isolating operation switch device as described in claim 3, characterized in that: A limit switch assembly (7) and a terminal block (6) are also installed on the side of the lower housing (4). A window is provided on the side wall of the lower housing (4). A trigger rod (21) is provided at the bottom end of the sliding base (13) and the trigger rod (21) is located in the aforementioned window. The limit switch assembly (7) includes a housing and two left and right contact switches (20) installed in the housing. The contact switches (20) are connected to the terminal block (6). When the trigger rod (21) extends, the two contact switches (20) are triggered. When the trigger rod (21) retracts, the two contact switches (20) are not triggered.

5. The isolating operation switch device as described in claim 4, characterized in that: The upper box (5) has a hole in the middle for the drive shaft (3) to pass through. The upper box (5) has three sets of transparent windows (8) that are directly opposite to the three sets of wiring boards (9) below. Multiple sets of connecting seats (10) are provided on the edges of both the lower box (4) and the upper box (5). The lower box (4) and the upper box (5) are fixedly connected by bolts located in each set of connecting seats (10).

6. The isolating operating switch device according to any one of claims 1 to 5, characterized in that: The lever bracket (18) is bow-shaped, and the lever (17) is installed between the ends of its top and bottom folding plates. A shaft seat (16) with a square shaft hole in the middle is installed on both the top and bottom folding plates of the lever bracket (18). The drive shaft (3) is a square shaft and its lower part passes through the square shaft hole of the upper and lower shaft seats (16).

7. The isolating operation switch device as described in claim 6, characterized in that: The operating components include a base (2) and a knob (1) located in the middle of the base (2). The root of the knob (1) is cylindrical and located in the shaft hole in the center of the base (2). A sealing ring is provided between the root of the knob (1) and the shaft hole of the base (2). A square slot is provided at the bottom center of the knob (1), and the upper end of the drive shaft (3) is inserted into the square slot.

8. The isolating operation switch device as described in claim 7, characterized in that: A fixing plate (11) is provided at the bottom of both ends of the lower box (4), and a connecting groove for bolts to be inserted is provided at the end of the fixing plate (11).

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