Anti-explosion and anti-corrosion rotary switch

Abstract

An anti-explosion and anti-corrosion rotary switch comprises a bottom shell, a trigger rod, a linkage seat, a spring, a rotary seat, a cover shell, a rotary handle, a first sealing ring and a second sealing ring, a penetrating opening is formed in the center of the bottom end of an installation cavity of the bottom shell, the trigger rod and the penetrating opening are matched and arranged in an axial sliding mode, and the linkage seat is movably matched in the installation cavity. The inner end of the trigger rod is fixedly connected with the bottom end of the linkage seat, a first explosion-proof joint face is further formed between the outer peripheral wall of the linkage seat and the inner peripheral wall of the mounting cavity, the spring is arranged between the bottom end of the mounting cavity and the bottom end of the linkage seat, the rotating seat is rotationally arranged at an upper opening of the mounting cavity, and a linkage structure is arranged between the rotating seat and the linkage seat. The rotating handle is fixedly connected with the upper end of the rotating base and arranged outside the cover shell, the first sealing ring is arranged between the rotating base and the cover shell, and the second sealing ring is arranged between the bottom shell and the cover shell. The explosion-proof and anti-corrosion device has good explosion-proof and anti-corrosion effects, can well adapt to dangerous explosion environments, and is safer to use.

Description

Technical Field

[0001] This utility model relates to the field of explosion-proof electrical equipment technology, and in particular to an explosion-proof and corrosion-resistant rotary switch. Background Technology

[0002] As we all know, a spark is generated the instant the switch contacts make contact with the pins. While this spark poses no problem in normal daily life, it can become a significant hazard in flammable and explosive environments. To address this, explosion-proof switches have been developed. The main principle of explosion-proof switches is to prevent flammable gases from entering the switch. Their primary function is to isolate the internal gas layer from the external gas layer, thus preventing the ignition of external gases even if there is an internal spark or explosion. Although there are many brands and types of explosion-proof switches on the market, truly high-quality, safe, and corrosion-resistant explosion-proof switches with robust explosion-proof performance are relatively rare. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an explosion-proof and corrosion-resistant rotary switch that can adapt well to relatively dangerous explosive environments and is safer to use.

[0004] The technical solution adopted by this utility model to solve its technical problem is an explosion-proof and corrosion-resistant rotary switch. The rotary switch is detachably connected to a switch base via a fixed base. The rotary switch includes a bottom shell, a trigger rod, a linkage base, a spring, a rotating base, a cover shell, a rotating handle, a first sealing ring, and a second sealing ring. The bottom shell has an upper-opening mounting cavity, and a through-hole is formed at the center of the bottom end of the mounting cavity. The trigger rod cooperates with the through-hole and is axially sliding. The linkage base is movably fitted within the mounting cavity, and the inner end of the trigger rod is fixedly connected to the bottom end of the linkage base. A first explosion-proof mating surface is formed between the outer peripheral wall of the moving seat and the inner peripheral wall of the mounting cavity. The spring is located between the bottom end of the mounting cavity and the bottom end of the linkage seat. The rotating seat is rotatably arranged at the upper opening of the mounting cavity. A linkage structure is provided between the rotating seat and the linkage seat. The cover is threadedly connected to the upper end of the bottom shell and restricts the rotating seat from disengaging. The rotating handle is fixedly connected to the upper end of the rotating seat and is located outside the cover. The first sealing ring is located between the rotating seat and the cover, and the second sealing ring is located between the bottom shell and the cover.

[0005] The advantages of the above technical solution are as follows: Since the lower end of the linkage seat is fixedly connected to the inner end of the trigger rod, and the trigger rod only moves axially with the cooperation of the through-hole, the linkage seat, which is movably fitted into the mounting cavity, also only moves axially under force. Through the linkage structure and spring, when the rotating handle drives the rotating seat to rotate forward, the linkage structure will cause the linkage seat and trigger rod to gradually slide downwards. During the downward sliding of the linkage seat, the spring will accumulate potential energy. When the rotary switch is rotated to its final position, the trigger rod triggers the switch seat inside the explosion-proof enclosure. After triggering, the spring releases its potential energy, causing the linkage seat and trigger rod to gradually slide upwards to reset. Simultaneously, as the linkage seat gradually slides upwards to reset, the linkage structure will cause the rotating seat and rotating handle to gradually rotate in the opposite direction to reset, thus realizing the basic function of the rotary switch. Furthermore, the use of a threaded connection between the bottom shell and the cover shell facilitates the movement of the trigger rod and linkage... The mounting constraints of the seat, spring, and rotating seat within the mounting cavity, along with the convenient rotary handle, facilitate operation. The first explosion-proof mating surface prevents gaps between the linkage seat and the mounting cavity during sliding, thus preventing gas exchange between the inside and outside of the explosion-proof enclosure and ensuring the rotary switch's excellent explosion-proof performance. The first sealing ring prevents gaps between the rotating seat and the cover during rotation, preventing corrosive liquids from entering the mounting cavity and also, to some extent, preventing dust and gas intrusion. The second sealing ring prevents gaps between the bottom shell and the cover, preventing corrosive liquids from entering the mounting cavity and also, to some extent, preventing dust and gas intrusion. Therefore, the first and second sealing rings provide the rotary switch with excellent corrosion and sealing performance. A rotary switch with the above structure offers excellent overall corrosion and explosion-proof performance, a reasonable structural design, convenient operation, and safe use.

[0006] Furthermore, the linkage structure includes a switch limiting protrusion, a first switch limiting groove, and a second switch limiting groove. The switch limiting protrusion is formed on the lower outer peripheral wall of the rotating seat. The first switch limiting groove and the second switch limiting groove are formed on the upper end of the linkage seat, and the end face of the second switch limiting groove is higher than the end face of the first switch limiting groove. A transition slope is also provided on the upper end of the linkage seat between the first switch limiting groove and the second switch limiting groove. The transition slope allows the switch limiting protrusion to rotate between the first switch limiting groove and the second switch limiting groove.

[0007] The advantages of the above technical solution are as follows: Under normal circumstances, the switch limiting protrusion will engage with the first switch limiting groove. As the rotating handle is rotated, the rotating seat rotates, and the switch limiting protrusion rotates out of the first switch limiting groove and rotates along the transition slope. At this time, the linkage seat and the trigger rod can be moved down. When the rotating handle and the rotating seat are rotated to their positions, the switch limiting protrusion will rotate into the second switch limiting groove. At this time, the linkage seat and the trigger rod move down to their maximum stroke position, which can trigger the switch seat switch in the explosion-proof box. After the triggering is completed, the spring releases its potential energy. At the same time as the linkage seat and the trigger rod move up, the switch limiting protrusion will rotate from the second switch limiting groove along the transition slope to the first switch limiting groove, thereby completing the reset of the rotating seat and the rotating handle. The overall structure is simple and stable and reliable in use. The setting of the transition slope makes it easy for the switch limiting protrusion to switch between the first switch limiting groove and the second switch limiting groove by rotation.

[0008] Furthermore, a locking protrusion is formed at the bottom of the switch limiting protrusion, and a locking groove is provided on the bottom surface of the second switch limiting groove. The locking protrusion can cooperate with the locking groove, and a limiting protrusion is also provided at the upper end of the linkage seat on the outside of the second switch limiting groove.

[0009] The advantages of the above technical solution are as follows: when the switch limiting protrusion is located in the second switch limiting groove, the switch limiting protrusion can be locked by the cooperation of the locking protrusion and the locking groove, so that the rotary switch has a self-locking function. The setting of the limiting protrusion effectively prevents the switch limiting protrusion from rotating excessively and ensures the safety of use.

[0010] Furthermore, a stop protrusion is provided at a corresponding position on the outer peripheral wall of the rotating seat. The stop protrusion forms a limit with the inner end of the cover shell. A first mounting ring groove is also provided on the upper end of the stop protrusion, and the first sealing ring is installed in the first mounting ring groove.

[0011] The advantages of the above technical solution are: the stop protrusion will limit and abut against the inner end of the cover, thereby restricting the rotation seat from coming out. By setting a first mounting ring groove on the stop protrusion, the first sealing ring is installed in the first mounting ring groove. With this setting, under the action of the spring, the linkage seat and the rotation seat will press the first sealing ring against the inner end of the cover, effectively ensuring the sealing effect.

[0012] Furthermore, the rotary switch also includes a limiting ring, and a limiting groove is formed at the corresponding position of the lower end of the trigger rod. The limiting ring cooperates with the limiting groove, and the limiting ring forms a limit with the bottom end of the bottom shell.

[0013] The advantages of adopting the above technical solution are: by setting a limiting ring, the limiting ring limits the upward movement of the trigger rod, avoiding excessive movement of the trigger rod under the drive of the linkage seat and spring, and ensuring the reliability of use.

[0014] Furthermore, a first mounting hole is provided through the center of the bottom end of the inner cavity of the linkage seat, a first fixing screw is installed at the first mounting hole, and a second explosion-proof mating surface is provided between the first fixing screw and the first mounting hole. A second mounting hole is provided at the center of the inner end of the trigger rod, and the bottom end of the first fixing screw is fitted into the second mounting hole.

[0015] The advantages of the above technical solution are as follows: By setting a first mounting hole on the linkage seat and a second mounting hole on the trigger rod, during assembly, after the first fixing screw passes through the first mounting hole and the second mounting hole to form a fixed structure, the linkage seat and the trigger rod can be integrated into a single installation structure, achieving the purpose of rapid installation. At the same time, by adopting the above fixing method, the connection between the linkage seat and the trigger rod is reliable, and the linkage seat is not prone to rotation. Furthermore, by setting a second explosion-proof mating surface, it is possible to prevent gaps between the first fixing screw and the first mounting hole from allowing gas to flow between the inside and outside of the explosion-proof box, thus ensuring the good explosion-proof effect of the rotary switch.

[0016] Furthermore, the center of the rotating base is provided with a third mounting hole, a second fixing screw is installed in the third mounting hole, and a third explosion-proof mating surface is provided between the second fixing screw and the third mounting hole. The center of the rotating part of the rotating handle is provided with a fourth mounting hole, and the bottom end of the second fixing screw fits into the fourth mounting hole.

[0017] The advantages of the above technical solution are as follows: By setting a third mounting hole on the rotating base and a fourth mounting hole on the rotating handle, during assembly, after the second fixing screw passes through the third mounting hole and the fourth mounting hole to form a fixed structure, the rotating base and the rotating handle can be integrated into a single installation structure, achieving the purpose of rapid installation. At the same time, by adopting the above fixing method, the connection between the rotating base and the rotating handle is reliable and the rotation effect is excellent. Furthermore, by setting a third explosion-proof mating surface, it is possible to prevent gaps between the second fixing screw and the third mounting hole from allowing gas to flow between the inside and outside of the explosion-proof box, thus ensuring the good explosion-proof effect of the rotary switch. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the mating structure of the present invention and the switch holder;

[0019] Figure 2 This is a cross-sectional view of the mating structure of the present invention and the switch holder;

[0020] Figure 3 This is a schematic diagram of the trigger rod structure of this utility model;

[0021] Figure 4 This is a cross-sectional view of the bottom shell structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the linkage seat structure of this utility model. Figure 1 ;

[0023] Figure 6 This is a schematic diagram of the linkage seat structure of this utility model. Figure 2 ;

[0024] Figure 7 This is a schematic diagram of the rotating seat structure of this utility model. Figure 1 ;

[0025] Figure 8 This is a schematic diagram of the rotating seat structure of this utility model. Figure 2 .

[0026] In the diagram: 1-Rotary switch, 2-Fixed base, 3-Switch base, 4-Bottom shell, 5-Trigger rod, 6-Linkage base, 7-Spring, 8-Rotary base, 9-Cover shell, 10-Rotary handle, 11-First sealing ring, 12-Second sealing ring, 13-Mounting cavity, 14-Through opening, 15-First explosion-proof mating surface, 16-Switch limiting protrusion, 17-First switch limiting groove, 18-Second switch limiting groove, 19-Transition slope, 20-Locking protrusion, 21-Locking groove, 22-Limiting protrusion, 23 - Stop protrusion, 24 - First mounting ring groove, 25 - Limiting retaining ring, 26 - First mounting hole, 27 - First fixing screw, 28 - Second explosion-proof mating surface, 29 - Second mounting hole, 30 - Third mounting hole, 31 - Second fixing screw, 32 - Third explosion-proof mating surface, 33 - Fourth mounting hole, 34 - Mounting through hole, 35 - Locking block, 36 - Locking plate, 37 - Support plate, 38 - Locking groove, 39 - Locking ring groove, 40 - Threaded protrusion, 41 - Snap-on part, 42 - Third fixing screw. Detailed Implementation

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model and / or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without creative effort. Furthermore, references to orientation only indicate the relative positional relationship between the components, not their absolute positional relationship.

[0028] Please see Figures 1 to 8As shown, an explosion-proof and corrosion-resistant rotary switch is disclosed. The rotary switch 1 is detachably connected to the switch base 3 via a fixed base 2. The rotary switch 1 includes a bottom shell 4, a trigger rod 5, a linkage base 6, a spring 7, a rotating base 8, a cover shell 9, a rotating handle 10, a first sealing ring 11, and a second sealing ring 12.

[0029] In this embodiment, the bottom shell 4 has an upper-opening mounting cavity 13, and a through-hole 14 is formed at the bottom center of the mounting cavity 13. The trigger rod 5 cooperates with the through-hole 14 and is axially slidable. More specifically, both the trigger rod 5 and the through-hole 14 are rectangular in shape, which can simply and reliably ensure that the trigger rod 5 can only slide axially. The linkage seat 6 is movably fitted inside the mounting cavity 13. Both the linkage seat 6 and the mounting cavity 13 are circular in shape. The linkage seat 6 also has an upper-opening inner cavity, and the inner cavity of the trigger rod 5... The bottom end of the mounting cavity 13 is fixedly connected to the bottom end of the linkage seat 6. The spring 7 is located between the bottom end of the mounting cavity 13 and the bottom end of the linkage seat 6. The lower end of the spring 7 is connected to the bottom end of the mounting cavity 13, and the upper end of the spring 7 is connected to the bottom end of the mounting cavity 13. The rotating seat 8 is rotatably set at the upper opening of the mounting cavity 13. A linkage structure is provided between the rotating seat 8 and the linkage seat 6. The cover 9 is threadedly connected to the upper end of the bottom shell 4 and forms a release restriction for the rotating seat 8. The rotating handle 10 is fixedly connected to the upper end of the rotating seat 8 and is set outside the cover 9.

[0030] In the above structure, since the lower end of the linkage seat 6 is fixedly connected to the inner end of the trigger rod 5, and the trigger rod 5 only moves axially under the cooperation of the through-hole 14, the linkage seat 6, which is movably fitted in the mounting cavity 13, also only moves axially under force. Through the linkage structure and spring 7, when the rotating handle 10 drives the rotating seat 8 to rotate forward, the linkage structure will drive the linkage seat 6 and the trigger rod 5 to gradually slide downwards. During the gradual downward sliding of the linkage seat 6, the spring 7 will also accumulate potential energy. When the rotary switch 1 is rotated to the correct position, the trigger rod 5 is activated. Rod 5 triggers the switch base 3 inside the explosion-proof enclosure. After triggering, the spring 7 releases its potential energy, which drives the linkage base 6 and the trigger rod 5 to gradually slide upward and reset. As the linkage base 6 gradually slides upward and resets, the linkage structure causes the rotating base 8 and the rotating handle 10 to gradually rotate in the opposite direction and reset, thus realizing the basic function of the rotary switch 1. Furthermore, the use of a threaded connection between the bottom shell 4 and the cover shell 9 facilitates the installation of the trigger rod 5, linkage base 6, spring 7, and rotating base 8 within the mounting cavity 13. The design of the rotating handle 10 facilitates operation.

[0031] In this embodiment, a first explosion-proof mating surface 15 is formed between the outer peripheral wall of the linkage seat 6 and the inner peripheral wall of the mounting cavity 13. A first sealing ring 11 is disposed between the rotating seat 8 and the cover shell 9, and a second sealing ring 12 is disposed between the bottom shell 4 and the cover shell 9. The provision of the first explosion-proof mating surface 15 can prevent gaps from existing between the linkage seat 6 and the mounting cavity 13 during sliding, thus preventing gas from flowing between the inside and outside of the explosion-proof enclosure. This ensures that the rotary switch 1 has a good explosion-proof effect. The provision of the first sealing ring 11 can prevent the rotating seat 8 from engaging with the cover shell 9 during rotation. The first sealing ring 11 and the second sealing ring 12 prevent corrosive liquids from entering the mounting cavity 13 due to gaps between the bottom shell 4 and the cover shell 9, and also prevent dust and gas from entering to a certain extent. Therefore, the arrangement of the first sealing ring 11 and the second sealing ring 12 gives the rotary switch 1 a good anti-corrosion and sealing effect. The rotary switch 1 with the above structure has good overall anti-corrosion and explosion-proof effect, reasonable structural design, convenient operation, and safe use.

[0032] In this embodiment, the linkage structure includes a switch limiting protrusion 16, a first switch limiting groove 17, and a second switch limiting groove 18. The switch limiting protrusion 16 is formed on the lower outer peripheral wall of the rotating seat 8. The first switch limiting groove 17 and the second switch limiting groove 18 are formed on the upper end of the linkage seat 6, and the end face of the second switch limiting groove 18 is higher than the end face of the first switch limiting groove 17. A transition slope 19 is also provided on the upper end of the linkage seat 6 between the first switch limiting groove 17 and the second switch limiting groove 18. The transition slope 19 makes the switch limiting protrusion 16... The rotating seat 8 rotates between the first switch limiting groove 17 and the second switch limiting groove 18. More specifically, the first switch limiting groove 17, the second switch limiting groove 18, and the transition slope 19 are formed on the upper end of the inner cavity wall of the linkage seat 6. Two switch limiting protrusions 16 are provided, positioned radially upwards at the lower end of the rotating seat 8. Two sets of the first switch limiting groove 17, the second switch limiting groove 18, and the transition slope 19 are also provided for the corresponding switch limiting protrusions 16 to engage. In the above structure, under normal conditions… In this situation, the switch limiting protrusion 16 will engage within the first switch limiting groove 17. As the rotating handle 10 rotates, it drives the rotating seat 8 to rotate. Since the end face of the second switch limiting groove 18 is higher than the end face of the first switch limiting groove 17, the switch limiting protrusion 16 rotates out of the first switch limiting groove 17 and rotates along the transition slope 19. At this time, the linkage seat 6 and the trigger rod 5 can be moved downwards. When the rotating handle 10 and the rotating seat 8 are rotated to their positions, the switch limiting protrusion 16 will rotate into the second switch limiting groove 18. At this time, the linkage seat 6 and the trigger rod 5 will move downwards to their maximum positions. At the large stroke, the switch seat 3 inside the explosion-proof box can be triggered. After triggering, the spring 7 releases potential energy. At the same time as the linkage seat 6 and the trigger rod 5 move upward, the switch limiting protrusion 16 will rotate from the second switch limiting groove 18 along the transition slope 19 to the first switch limiting groove 17, thereby completing the reset of the rotating seat 8 and the rotating handle 10. The overall structure is simple and stable and reliable in use. The setting of the transition slope 19 can facilitate the switch limiting protrusion 16 to switch between the first switch limiting groove 17 and the second switch limiting groove 18 by rotation.

[0033] In this embodiment, a locking protrusion 20 is formed at the bottom of the switch limiting protrusion 16, and a locking groove 21 is provided on the bottom surface of the second switch limiting groove 18. The locking protrusion 20 can cooperate with the locking groove 21. More specifically, the locking protrusion 20 can be formed by the switch limiting protrusion 16 at an angle. In the above structure, when the switch limiting protrusion 16 is located in the second switch limiting groove 18, the locking protrusion 16 can be locked by the cooperation of the locking protrusion 20 and the locking groove 21, so that the rotary switch 1 has a self-locking function.

[0034] In this embodiment, the upper end of the linkage seat 6 is also provided with a limiting protrusion 22 on the outside of the second switch limiting groove 18. The setting of the limiting protrusion 22 effectively prevents the excessive rotation of the switch limiting protrusion 16 and ensures the safety of use.

[0035] In this embodiment, a stop protrusion 23 is also provided at a corresponding position on the outer peripheral wall of the rotating seat 8. The stop protrusion 23 and the inner end of the cover 9 form a limiting position. That is, the stop protrusion 23 is set relative to the inner side of the cover 9. After installation, the stop protrusion 23 will limit and abut against the inner end of the cover 9, thereby restricting the rotation seat 8 from coming out. A first mounting ring groove 24 is also provided on the upper end of the stop protrusion 23. The first sealing ring 11 is installed in the first mounting ring groove 24. By providing the first mounting ring groove 24 on the stop protrusion 23, the first sealing ring 11 is installed in the first mounting ring groove 24. With this arrangement, under the action of the spring 7, the linkage seat 6 and the rotating seat 8 make the first sealing ring 11 press against the inner end of the cover 9, effectively ensuring the sealing effect.

[0036] In this embodiment, a second mounting ring groove is formed at the upper end of the bottom shell 4, and the second sealing ring 12 is installed in the second mounting ring groove. By setting the second mounting ring groove, the installation and positioning of the second sealing ring 12 is achieved, making the sealing effect of the second sealing ring 12 more stable.

[0037] In this embodiment, the rotary switch 1 also includes a limiting ring 25. A limiting groove is formed at the corresponding position of the lower end of the trigger rod 5. The limiting ring 25 cooperates with the limiting groove, and the limiting ring 25 forms a limit with the bottom end of the bottom shell 3. By setting the limiting ring 25, the limiting ring 25 realizes the position limit of the upward movement of the trigger rod 5, avoiding excessive movement of the trigger rod 5 under the drive of the linkage seat 6 and the spring 7, and ensuring the reliability of use.

[0038] In this embodiment, a first mounting hole 26 is provided through the center of the bottom end of the inner cavity of the linkage seat 6. A first fixing screw 27 is installed at the first mounting hole 26, and a second explosion-proof mating surface 28 is provided between the first fixing screw 27 and the first mounting hole 26. A second mounting hole 29 is provided at the center of the inner end of the trigger rod 5. The bottom end of the first fixing screw 27 fits into the second mounting hole 29. By providing the first mounting hole 26 on the linkage seat 6 and the second mounting hole 29 on the trigger rod 5, during assembly, after the first fixing screw 27 passes through the first mounting hole 26 and the second mounting hole 29 to form a fixed structure, the linkage seat 6 and the trigger rod 5 can form an integrated installation structure, achieving the purpose of quick installation. At the same time, by adopting the above-mentioned fixing method, the connection between the linkage seat 6 and the trigger rod 5 is reliable, and the linkage seat 6 is not prone to rotation. Furthermore, by providing the second explosion-proof mating surface 28, it is possible to prevent the presence of gaps between the first fixing screw 27 and the first mounting hole 26, which would allow gas to flow between the inside and outside of the explosion-proof box, thus ensuring the good explosion-proof effect of the rotary switch 1.

[0039] In this embodiment, a third mounting hole 30 is provided through the center of the rotating base 8, and a second fixing screw 31 is installed at the third mounting hole 30. A third explosion-proof mating surface 32 is provided between the second fixing screw 31 and the third mounting hole 30. A fourth mounting hole 33 is provided at the center of the rotating part of the rotating handle 10. The bottom end of the second fixing screw 31 fits into the fourth mounting hole 33. By providing a third mounting hole 30 on the rotating base 8 and a fourth mounting hole 33 on the rotating handle 10, during assembly, after the second fixing screw 31 passes through the third mounting hole 30 and the fourth mounting hole 31 to form a fixed structure, the rotating base 8, the cover 9 and the rotating handle 10 can form an integrated installation structure, achieving the purpose of quick installation. At the same time, by adopting the above-mentioned fixing method, the connection between the rotating base 8 and the rotating handle 10 is reliable and the rotation effect is good. In addition, by providing a third explosion-proof mating surface 32, it is possible to prevent gaps between the second fixing screw 31 and the third mounting hole 30 from allowing gas to flow between the inside and outside of the explosion-proof box, thus ensuring the good explosion-proof effect of the rotating switch 1.

[0040] In this embodiment, the mounting base 2 has a mounting through hole 34. The lower end of the rotary switch 1 is installed in the mounting through hole 34, that is, the lower end of the bottom shell 4 is installed in the mounting through hole 34. The left and right sides of the mounting base 2 are also provided with locking parts 35. The left and right sides of the switch base 3 are provided with elastic locking plates 36 and elastic support plates 37. The inner side of the locking plate 36 is provided with a corresponding locking groove 38. The locking part 35 cooperates with the locking groove 38. The support plate 37 is located inside the locking plate 36 and forms a support for the mounting base 2. The mounting base 2 is connected to the lower end of the rotary switch 1 through the mounting through hole 34, and then connected to the locking plate 36 through the locking part 35. The engagement of the slot 38 on plate 6 enables the rotary switch 1 and switch base 3 to be installed as a single unit. Simultaneously, the snap-fit ​​plate 36 is elastically designed, facilitating the fixing and disassembly of the mounting base 2. More specifically, the top of the snap-fit ​​plate 36 is sloped to allow the snap-fit ​​block 35 to quickly snap into the slot 38. During disassembly, the snap-fit ​​plate 36 can be deformed using external tools, allowing the snap-fit ​​block 35 to disengage from the slot 38. The elastic support plate 37 can be an arc-shaped curved plate. The elastic support plate 37 provides support for the mounting base 2, making the integrated installation of the rotary switch 1, mounting base 2, and switch base 3 more stable.

[0041] In this embodiment, a retaining ring groove 39 is formed on the lower outer wall surface of the rotary switch 1. More specifically, the retaining ring groove 39 is formed on the lower outer wall surface of the bottom shell 4. The fixing seat 2 has a threaded protrusion 40 and an elastic snap-fit ​​part 41 respectively formed at the mounting through hole 34. A third fixing screw 42 is installed in the threaded protrusion 40. The third fixing screw 42, the snap-fit ​​part 41 and the retaining ring groove 39 cooperate. During installation, the lower end of the rotary switch 1 cooperates with the mounting through hole 34. After installation, the elastic snap-fit ​​part 41 will be snapped into the retaining ring groove 39. Then, by turning the third fixing screw 42 in the threaded protrusion 40, the third fixing screw 42 and the retaining ring groove 39 are tightened together, and the fixing seat 2 can be fixedly connected to the rotary switch 1. During disassembly, the third fixing screw 42 is turned in the opposite direction, and the elastic snap-fit ​​part 41 is disengaged from the retaining ring groove 39, so that the fixing seat 2 and the rotary switch 1 can be disassembled.

[0042] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. An explosion-proof and corrosion-resistant rotary switch, wherein the rotary switch (1) is detachably connected to a switch base (3) via a fixing base (2), characterized in that: The rotary switch (1) includes a bottom shell (4), a trigger rod (5), a linkage seat (6), a spring (7), a rotating seat (8), a cover (9), a rotating handle (10), a first sealing ring (11), and a second sealing ring (12). The bottom shell (4) has an upper-opening mounting cavity (13), and a through-hole (14) is formed at the bottom center of the mounting cavity (13). The trigger rod (5) is engaged with the through-hole (14) and is axially slidable. The linkage seat (6) is movably engaged in the mounting cavity (13), and the inner end of the trigger rod (5) is fixedly connected to the bottom end of the linkage seat (6). A first sealing ring is formed between the outer peripheral wall of the linkage seat (6) and the inner peripheral wall of the mounting cavity (13). The explosion-proof mating surface (15) is provided with the spring (7) located between the bottom end of the mounting cavity (13) and the bottom end of the linkage seat (6). The rotating seat (8) is rotatably arranged at the upper opening of the mounting cavity (13). A linkage structure is provided between the rotating seat (8) and the linkage seat (6). The cover (9) is threadedly connected to the upper end of the bottom shell (4) and restricts the rotating seat (8) from coming out. The rotating handle (10) is fixedly connected to the upper end of the rotating seat (8) and is arranged outside the cover (9). The first sealing ring (11) is located between the rotating seat (8) and the cover (9). The second sealing ring (12) is located between the bottom shell (4) and the cover (9).

2. The explosion-proof and corrosion-resistant rotary switch according to claim 1, characterized in that: The linkage structure includes a switch limiting protrusion (16), a first switch limiting groove (17), and a second switch limiting groove (18). The switch limiting protrusion (16) is formed on the lower outer peripheral wall of the rotating seat (8). The first switch limiting groove (17) and the second switch limiting groove (18) are formed on the upper end of the linkage seat (6), and the end face of the second switch limiting groove (18) is higher than the end face of the first switch limiting groove (17). A transition slope (19) is also provided on the upper end of the linkage seat (6) between the first switch limiting groove (17) and the second switch limiting groove (18). The transition slope (19) allows the switch limiting protrusion (16) to rotate between the first switch limiting groove (17) and the second switch limiting groove (18).

3. The explosion-proof and corrosion-resistant rotary switch according to claim 2, characterized in that: The bottom of the switch limiting protrusion (16) forms a locking protrusion (20), and the bottom surface of the second switch limiting groove (18) is provided with a locking groove (21). The locking protrusion (20) can cooperate with the locking groove (21). The upper end of the inner cavity of the linkage seat (6) is also provided with a limiting protrusion (22) on the outside of the second switch limiting groove (18).

4. The explosion-proof and corrosion-resistant rotary switch according to claim 1, characterized in that: The outer peripheral wall of the rotating seat (8) is also provided with a stop protrusion (23) at the corresponding position. The stop protrusion (23) and the inner end of the cover (9) form a limit. The upper end of the stop protrusion (23) is also provided with a first mounting ring groove (24). The first sealing ring (11) is installed in the first mounting ring groove (24).

5. The explosion-proof and corrosion-resistant rotary switch according to claim 1, characterized in that: The rotary switch (1) also includes a limiting ring (25). A limiting groove is formed at the corresponding position of the lower end of the trigger rod (5). The limiting ring (25) cooperates with the limiting groove, and the limiting ring (25) forms a limit with the bottom end of the bottom shell (4).

6. The explosion-proof and corrosion-resistant rotary switch according to claim 1, characterized in that: The inner cavity of the linkage seat (6) has a first mounting hole (26) at the center of the bottom end. A first fixing screw (27) is installed in the first mounting hole (26), and a second explosion-proof mating surface (28) is provided between the first fixing screw (27) and the first mounting hole (26). The inner end of the trigger rod (5) has a second mounting hole (29), and the bottom end of the first fixing screw (27) fits into the second mounting hole (29).

7. The explosion-proof and corrosion-resistant rotary switch according to claim 1, characterized in that: The center of the rotating base (8) is provided with a third mounting hole (30), a second fixing screw (31) is installed in the third mounting hole (30), and a third explosion-proof mating surface (32) is provided between the second fixing screw (31) and the third mounting hole (30). The center of the rotating part of the rotating handle (10) is provided with a fourth mounting hole (33), and the bottom end of the second fixing screw (31) is fitted into the fourth mounting hole (33).

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