Explosion-proof switch

Abstract

The utility model relates to the technical field of explosion-proof switches, and provides an explosion-proof switch, which comprises an operating mechanism and a wire holder, a lamp holder is arranged on one side of the wire holder, an indicating lamp module is arranged in the lamp holder, one side of the lamp holder and one side of the wire holder are connected with a connecting seat, the operating mechanism is arranged on one side, far away from the wire holder, of the connecting seat, and the operating mechanism is arranged on the other side of the wire holder. And a wiring mechanism is arranged in the wiring seat and is electrically connected with the indicating lamp module. According to the technical scheme, an operator can visibly and visually feed back the state in real time, and the safety is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to switch technical field, specifically, relate to a kind of explosion-proof switch. BACKGROUND

[0002] Explosion-proof switch is a kind of electrical control equipment specially designed for flammable and explosive environment, and is widely used in petroleum, chemical industry, mining industry and other industries. Its main function is to safely cut off or connect circuit, to prevent fire or explosion caused by electric arc, high temperature, etc. Explosion-proof switch uses special materials and structural design to ensure stable operation under extreme conditions and prevent internal electrical spark from causing external danger.

[0003] However, in actual use, the state indication of explosion-proof switch usually depends on the experience of operating personnel, or the running condition of equipment is judged by observing the position and state of switch. This method lacks intuitive and real-time state feedback, and is easy to cause operating error due to judgment error of operating personnel, thereby affecting safety. UTILITY MODEL CONTENT

[0004] The utility model provides a kind of explosion-proof switch, so that operating personnel can live intuitive and real-time state feedback, improve safety.

[0005] The technical scheme of the utility model is as follows: a kind of explosion-proof switch, including operating mechanism, wiring seat, the side of the wiring seat is equipped with lamp holder, the inside of lamp holder is equipped with indicator light module, the side of lamp holder, wiring seat is all connected with connecting seat, the operating mechanism is set in the side of connecting seat away from wiring seat, the inside of wiring seat is equipped with wiring mechanism, the wiring mechanism is electrically connected with indicator light module.

[0006] Further, the inside of the wiring seat is equipped with inner housing, the wiring mechanism includes terminal assembly, conducting assembly, the terminal assembly includes first conducting plate and the first wiring terminal being arranged on the both sides of first conducting plate, and the both sides of first conducting plate extend to the outside of inner housing and are located in the inside of wiring seat, the conducting assembly is arranged in the inside of inner housing and is linked with operating mechanism.

[0007] The conducting assembly is used to control the circuit breaking or passing of wiring mechanism.

[0008] Further, the conducting assembly includes second conducting plate abutting against first conducting plate, push rod arranged on the top of second conducting plate and first elastic member arranged on the bottom of second conducting plate, the push rod is linked with operating mechanism.

[0009] Further, one side of the terminal block and the lamp holder is provided with a first connecting groove, each first connecting groove is provided with a connecting block, the other side of the terminal block and the lamp holder is integrally formed with a clamping part, and each clamping part is provided with a second connecting groove on the side opposite to the first connecting groove, the connecting seat is provided with a connecting plate on both sides of the bottom, and the side of the connecting plate close to the first connecting groove is provided with a clamping groove for clamping the connecting block, and one side of the clamping part is provided with a first inclined surface in sliding connection with the connecting plate.

[0010] Further, the top of the terminal block is provided with a sliding groove, one side of the push rod extends into the sliding groove and is in sliding connection with the inner wall of the sliding groove, one side of the push rod is provided with a fixing groove, the inside of the terminal block is provided with a fixing block opposite to the fixing groove, and the side of the terminal block close to the fixing groove is provided with a fixing mechanism for clamping or separating the fixing block from the fixing groove.

[0011] Further, the fixing mechanism comprises a pushing block, a second elastic element and a screw rod, the side of the terminal block close to the fixing groove is provided with a pushing groove, the pushing block is arranged in the pushing groove and is in sliding connection with the inner wall of the pushing groove, one end of the fixing block extends into the pushing groove and is fixedly connected with the pushing block, one end of the second elastic element is in abutment with the pushing block, the other end of the second elastic element is arranged on the side of the pushing groove close to the fixing groove, the side of the pushing groove away from the fixing groove is provided with a threaded groove, the screw rod is in threaded connection with the inner wall of the threaded groove and one end of the screw rod is in abutment with the pushing block.

[0012] Further, the side of the terminal block is provided with a containing groove in communication with the threaded groove, one end of the screw rod extends into the containing groove and is fixedly connected with a rotating block, and the side of the rotating block away from the screw rod is provided with a hexagonal groove.

[0013] Further, both sides of the sliding groove are provided with limiting grooves, and both sides of the push rod are provided with limiting blocks in sliding connection with the inner wall of the limiting grooves.

[0014] The working principle and beneficial effects of the utility model are as follows:

[0015] The utility model discloses a lamp holder and terminal block are connected through the connecting seat, and the switch itself becomes an independent and complete function device, avoids the complexity of additional wiring, and the overall volume is small, improves the practicability of the switch. BRIEF DESCRIPTION OF DRAWINGS

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0017] Figure 1 This is a schematic diagram of the structure of Example 1;

[0018] Figure 2 This is a cross-sectional view of the terminal block in Embodiment 1;

[0019] Figure 3 This is an exploded view of Example 1. Figure 1 ;

[0020] Figure 4 This is an exploded view of Example 1. Figure 2 ;

[0021] Figure 5 This is a structural schematic diagram of Embodiment 1 (excluding the connecting base);

[0022] Figure 6 This is a schematic diagram of the structure of Example 2;

[0023] Figure 7 for Figure 6 Enlarged view of point A in the middle;

[0024] Figure 8 for Figure 6 Enlarged diagram of point B in the middle.

[0025] In the diagram: 1. Terminal block; 101. Inner housing; 102. First conductive plate; 103. First terminal; 104. Second conductive plate; 105. Push rod; 106. First elastic element; 107. Connecting block; 108. Snap-fit ​​part; 109. Second connecting groove; 110. Connecting plate; 111. Snap-fit ​​groove; 112. First inclined surface; 113. First connecting groove; 2. Lamp holder; 201. Explosion-proof indicator light; 202. Second terminal; 3. Connecting seat; 4. Slide groove; 401. Fixing groove; 402. Fixing block; 403. Pushing block; 404. Second elastic element; 405. Screw; 406. Pushing groove; 407. Threaded groove; 408. Receiving groove; 409. Rotating block; 410. Hexagonal groove; 411. Limiting groove; 412. Limiting block; 5. Support seat; 501. Button; 502. Push cylinder. Detailed Implementation

[0026] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0027] Example 1:

[0028] refer to Figures 1-5 An explosion-proof switch includes an operating mechanism and a terminal block 1. A lamp holder 2 is provided on one side of the terminal block 1. An indicator light module is provided inside the lamp holder 2. A connecting seat 3 is connected to one side of both the lamp holder 2 and the terminal block 1. The operating mechanism is located on the side of the connecting seat 3 away from the terminal block 1. A wiring mechanism is provided inside the terminal block 1. The wiring mechanism is electrically connected to the indicator light module.

[0029] The indicator module includes an explosion-proof indicator light 201 and second terminals 202 disposed on both sides of the explosion-proof indicator light 201. The explosion-proof indicator light 201 is disposed inside the lamp holder 2 and extends to the top of the lamp holder 2 at one end. The second terminals 202 are disposed on both sides of the lamp holder 2. It is worth noting that the lamp holder 2 can be transparent as a whole so that the operator can distinguish the status of the explosion-proof indicator light 201.

[0030] By incorporating an indicator light module and electrically connecting it to the wiring mechanism, the indicator light illuminates when the operator presses the switch on the operating mechanism and turns off when the operator releases the switch. This indicator light module provides intuitive and real-time feedback on the switch status, helping operators quickly assess the equipment's condition, thereby reducing the risk of misoperation and improving safety.

[0031] In addition, by connecting the lamp holder 2 to the terminal block 1 through the connector 3, the switch itself becomes an independent and fully functional device, avoiding the complexity of additional wiring, and the overall size is small, which improves the practicality of the switch.

[0032] Furthermore, the terminal block 1 has an inner housing 101 inside. The wiring mechanism includes a terminal assembly and a conductive assembly. The terminal assembly includes a first conductive plate 102 and first terminals 103 disposed on both sides of the first conductive plate 102. The two sides of the first conductive plate extend to the outside of the inner housing 101 and are located inside the terminal block 1. The conductive assembly is disposed inside the inner housing 101 and is linked with the operating mechanism. The conductive assembly is used to control the wiring mechanism to open or close circuits. The conductive assembly includes a second conductive plate 104 that abuts against the first conductive plate 102, a push rod 105 disposed on the top of the second conductive plate 104, and a first elastic member 106 disposed on the bottom of the second conductive plate 104. The push rod 105 is linked with the operating mechanism.

[0033] A housing is installed inside the terminal block 1, and the conductive components and the first conductive plate 102 are placed inside the inner housing 101. This can further improve the sealing of the terminal block 1, making it less likely for sparks generated when the switch is turned on or off to leak out, thereby enhancing the explosion-proof performance.

[0034] The operating mechanism includes a support base 5, a button 501, and a push cylinder 502. The support base 5 is located on top of the connecting base 3, and the button 501 is located on top of the support base 5 and is slidably connected to the inside of the support base 5. The push cylinder 502 is located at the bottom of the support base 5, with one end in contact with the push rod 105 and the other end in contact with the button 501. When the operator presses the button 501, the push cylinder 502 moves downward, thereby causing the push rod 105 to move downward, so that the second conductive plate 104 contacts the first conductive plate 102, and at the same time compresses the first elastic element 106, thereby establishing a circuit. When the operator releases the button 501, the first elastic element 106 returns to its original shape, causing the second conductive plate 104, push rod 105, push cylinder 502, and button 501 to move in the opposite direction, returning to their original positions, thereby cutting off the circuit.

[0035] In this embodiment, a first connecting groove 113 is provided on one side of the terminal block 1 and the lamp holder 2, and a connecting block 107 is provided in each first connecting groove 113. A snap-fit ​​part 108 is integrally formed on the other side of the terminal block 1 and the lamp holder 2. The snap-fit ​​part 108 at the top of the terminal block 1 and the lamp holder 2 can be made of plastic, such as polycarbonate or other engineering plastics. The snap-fit ​​part 108 made of this material usually has a certain toughness and can withstand a certain mechanical stress without easily breaking.

[0036] Furthermore, each snap-fit ​​part 108 has a second connecting groove 109 on the side opposite to the first connecting groove 113. Connecting plates 110 are provided on both sides of the bottom of the connecting base 3, and the side of the connecting plate 110 closest to the first connecting groove 113 has a snap-fit ​​groove 111 for engaging with the connecting block 107. A first inclined surface 112 is provided on one side of the snap-fit ​​part 108 for sliding connection with the connecting plate 110. It is worth noting that the lamp holder 2 and the terminal block 1 can be designed with the same shape to improve the aesthetics of the product.

[0037] In this embodiment, the connection is achieved through the cooperation of the connecting block 107 and the slot 111, so that the terminal block 1 and the lamp holder 2 are tightly connected. For specific use, refer to... Figure 4 First, place the terminal block 1 and the lamp holder 2 side by side. Then, align the slot 111 on the connecting plate 110 with the connecting blocks 107 in each of the first connecting slots 113. Next, insert the connecting plate 110 obliquely into the first connecting slots 113, so that the connecting blocks 107 are engaged in the slot 111. Finally, insert the connecting plate 110 on the other side of the terminal block 3 into the second connecting slot 109 through the first inclined surface 112, thereby fixing the terminal block 1 and the lamp holder 2. Because the engaging part 108 has a certain degree of flexibility, the engaging part 108 can undergo a certain deformation, allowing the connecting plate 110 to be smoothly engaged in the second connecting slot 109.

[0038] Furthermore, this connection method allows the connector 3 to connect multiple terminal blocks 1 with the same shape and structure at the same time, thereby enabling one operating mechanism to control multiple devices, which facilitates use and reduces costs.

[0039] Example 2:

[0040] Based on Example 1, and referring to Figures 6-8 To prevent the switch from accidentally switching to the open state due to misoperation, external vibration, or other factors during equipment maintenance, thus causing the circuit to be re-energized, a sliding groove 4 is provided on the top of the terminal block 1. One side of the push rod 105 extends into the sliding groove 4 and slides and connects with the inner wall of the sliding groove 4. A fixing groove 401 is provided on one side of the push rod 105. A fixing block 402 is provided on the side of the terminal block 1 opposite to the fixing groove 401. A fixing mechanism is provided on the side of the terminal block 1 near the fixing groove 401 to engage the fixing block 402 with the fixing groove 401 or to disengage the fixing block 402 from the fixing groove 401.

[0041] The fixed mechanism can physically isolate the operation after the explosion-proof switch is turned off. Even if the operator accidentally touches the switch, the fixed mechanism can prevent the switch from being turned on, avoiding unnecessary circuit connection and thus ensuring the safety of maintenance personnel.

[0042] Specifically, the fixing mechanism includes a push block 403, a second elastic element 404 (the second elastic element 404 can be a cylindrical compression spring), and a screw 405. The terminal block 1 has a push groove 406 on the side near the fixing groove 401. The push block 403 is disposed inside the push groove 406 and is slidably connected to the inner wall of the push groove 406. One end of the fixing block 402 extends into the push groove 406 and is fixedly connected to the push block 403. One end of the second elastic element 404 abuts against the push block 403, and the other end of the second elastic element 404 is disposed on the side of the push groove 406 near the fixing groove 401. The side of the push groove 406 away from the fixing groove 401 has a threaded groove 407. The screw 405 is threadedly connected to the inner wall of the threaded groove 407, and one end abuts against the push rod 105 (abutting means that the two are in contact).

[0043] When the operator needs to lock the push rod 105, simply rotate the screw 405. The screw 405 will move towards the fixing groove 401, simultaneously causing the push block 403 to move towards compressing the second elastic element 404. The push block 403 will cause the fixing block 402 to insert into the fixing groove 401, thereby locking the position of the push rod 105. In this way, even if the operator presses the button 501, the push rod 105 cannot move, thus achieving locking and ensuring the safety of maintenance personnel.

[0044] In this embodiment, the fixing mechanism only requires the operator to rotate the screw 405 to lock the push rod 105, which is convenient for the operator and improves the ease of operation.

[0045] Secondly, to facilitate the operator's rotation of the screw 405, a receiving groove 408 is provided on the side of the terminal block 1, and the receiving groove 408 communicates with the threaded groove 407. One end of the screw 405 extends into the receiving groove 408 and is fixedly connected to a rotating block 409. A hexagonal groove 410 is provided on the side of the rotating block 409 away from the screw 405. The hexagonal groove 410 facilitates the operator's use of an Allen wrench to rotate the screw 405, thereby further improving the ease of operation.

[0046] In this embodiment, limiting grooves 411 are provided on both sides of the slide groove 4, and limiting blocks 412 are provided on both sides of the push rod 105. The limiting blocks 412 are slidably connected to the inner wall of the limiting grooves 411. The limiting blocks 412 and limiting grooves 411 prevent the push rod 105 from rotating during movement, thus ensuring that the position of the fixing groove 401 on the push rod 105 always corresponds to the position of the fixing block 402. This improves the reliability and stability of the fixing mechanism under long-term use.

[0047] Working principle:

[0048] When the operator needs to lock the push rod 105, simply rotate the screw 405. The screw 405 will move towards the fixing groove 401, simultaneously causing the push block 403 to move towards compressing the second elastic element 404. The push block 403 will cause the fixing block 402 to insert into the fixing groove 401, thereby locking the position of the push rod 105. In this way, even if the operator presses the button 501, the push rod 105 cannot move, thus achieving locking and ensuring the safety of maintenance personnel.

[0049] When the operator needs to unlock the switch, simply rotate the screw 405 in the opposite direction. The screw 405 will move away from the fixing groove 401. At the same time, the second elastic element 404 will restore its deformation, causing the push block 403 to move away from the fixing groove 401, thereby disengaging the fixing block 402 from the fixing groove 401, achieving the purpose of unlocking and allowing the switch to be used normally.

[0050] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An explosion-proof switch, comprising an operating mechanism and a terminal block (1), characterized in that, A lamp holder (2) is provided on one side of the terminal block (1), and an indicator light module is provided inside the lamp holder (2). A connecting seat (3) is connected to one side of both the lamp holder (2) and the terminal block (1). The operating mechanism is located on the side of the connecting seat (3) away from the terminal block (1). A wiring mechanism is provided inside the terminal block (1), and the wiring mechanism is electrically connected to the indicator light module. The terminal block (1) is provided with an inner shell (101). The wiring mechanism includes a terminal assembly and a conductive assembly. The terminal assembly includes a first conductive plate (102) and first terminals (103) disposed on both sides of the first conductive plate (102). The two sides of the first conductive plate (102) extend to the outside of the inner shell (101) and are located inside the terminal block (1). The conductive assembly is disposed inside the inner shell (101) and is linked with the operating mechanism. The conductive component is used to control the wiring mechanism to open or close circuits. The conductive component includes a second conductive plate (104) that abuts against the first conductive plate (102), a push rod (105) disposed on the top of the second conductive plate (104), and a first elastic member (106) disposed on the bottom of the second conductive plate (104). The push rod (105) is linked with the operating mechanism. The terminal block (1) and lamp holder (2) are provided with a first connecting groove (113) on one side, and a connecting block (107) is provided in each first connecting groove (113). The terminal block (1) and lamp holder (2) are integrally formed with a snap-fit ​​part (108) on the other side, and a second connecting groove (109) is provided on the side of each snap-fit ​​part (108) opposite to the first connecting groove (113). The bottom of the connecting seat (3) is provided with a connecting plate (110) on both sides, and the side of the connecting plate (110) near the first connecting groove (113) is provided with a snap-fit ​​groove (111) that snaps into the connecting block (107). The side of the snap-fit ​​part (108) is provided with a first inclined surface (112) that slides with the connecting plate (110).

2. The explosion-proof switch according to claim 1, characterized in that, The top of the terminal block (1) is provided with a sliding groove (4). One side of the push rod (105) extends into the sliding groove (4) and slides and connects with the inner wall of the sliding groove (4). One side of the push rod (105) is provided with a fixing groove (401). The side of the terminal block (1) opposite to the fixing groove (401) is provided with a fixing block (402). The side of the terminal block (1) near the fixing groove (401) is provided with a fixing mechanism that allows the fixing block (402) to engage with the fixing groove (401) or to disengage the fixing block (402) from the fixing groove (401).

3. The explosion-proof switch according to claim 2, characterized in that, The fixing mechanism includes a push block (403), a second elastic element (404), and a screw (405). The terminal block (1) has a push groove (406) on the side near the fixing groove (401). The push block (403) is disposed inside the push groove (406) and is slidably connected to the inner wall of the push groove (406). One end of the fixing block (402) extends into the push groove (406) and is fixedly connected to the push block (403). One end of the second elastic element (404) abuts against the push block (403). The other end of the second elastic element (404) is disposed on the side of the push groove (406) near the fixing groove (401). The side of the push groove (406) away from the fixing groove (401) has a threaded groove (407). The screw (405) is threadedly connected to the inner wall of the threaded groove (407) and one end abuts against the push rod (105).

4. The explosion-proof switch according to claim 3, characterized in that, The side of the terminal block (1) is provided with a receiving groove (408), and the receiving groove (408) is connected to the threaded groove (407). One end of the screw (405) extends into the receiving groove (408) and is fixedly connected to a rotating block (409). The rotating block (409) is provided with a hexagonal groove (410) on the side away from the screw (405).

5. An explosion-proof switch according to claim 3, characterized in that, The sliding groove (4) is provided with limiting grooves (411) on both sides, and the push rod (105) is provided with limiting blocks (412) on both sides. The limiting blocks (412) are slidably connected to the inner wall of the limiting groove (411).

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