CN211182058U - Explosion-proof lighting switch structure - Google Patents
Explosion-proof lighting switch structure Download PDFInfo
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- CN211182058U CN211182058U CN201922445538.4U CN201922445538U CN211182058U CN 211182058 U CN211182058 U CN 211182058U CN 201922445538 U CN201922445538 U CN 201922445538U CN 211182058 U CN211182058 U CN 211182058U
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- rotating shaft
- rotary switch
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- hole
- positioning plate
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Abstract
The utility model discloses an explosion-proof lighting switch structure, it includes: casing, knob subassembly and be located the rotary switch in the casing, the knob subassembly includes: the fixing sleeve is fixed on the shell, and the rotating shaft is rotatably connected in the fixing sleeve; the rotating cap is fixed at one end of the rotating shaft, which is positioned outside the shell, the positioning plate is fixed at one end of the rotating shaft, which is positioned inside the shell, and the positioning plate is provided with a non-circular positioning hole, which corresponds to the cross section of the rotating shaft of the rotary switch and forms a nested fit with the rotating shaft. When the rotary switch is in work, the rotary cap is rotated to drive the rotating shaft to rotate, the rotating shaft drives the positioning plate to rotate and simultaneously drives the rotating shaft of the rotary switch to rotate through the rotating shaft, and the rotary switch is triggered. The utility model discloses a locating plate is connected, because locating plate processing is simple, can directly form the non-circular locating hole of nested complex with the rotation axis through the punch press punching press, with regard to like this great simplification course of working, reduction in production cost.
Description
The technical field is as follows:
the utility model relates to an explosion-proof electrical apparatus product technical field refers in particular to an explosion-proof lighting switch structure.
Background art:
explosion-proof switches are switching devices used in certain applications, for example, where there are mixtures of gases that are explosive and dangerous, such explosion-proof switches must be used to prevent an explosion. The switch element in the switch is arranged in a closed shell, and a user triggers the switch element in the shell through an external button or Xuan wine to realize corresponding operation.
The knob switch is adopted as the switch used in explosion-proof lighting products at present, which requires that enough torsion force must be carried between the knob assembly located outside the shell and the switch device in the shell. The drive-to-rotate connection that is common today is mainly through non-circular bore-to-shaft fit. Namely, a square hole is processed on the driving shaft of the knob assembly, and the square hole is matched with the square switch rotating shaft in the switch element. This approach has the following disadvantages: the square hole machining process is complex, drilling can not be directly completed through a drilling machine, milling machining needs to be performed through a milling machine, and production efficiency is very low. Due to the complex processing, the deformation of main parts is inevitably caused in the processing process, so that the fit clearance is increased, and the explosion-proof effect is influenced.
In view of the above situation, the present inventors have made improvements and have proposed the following technical solutions.
The utility model has the following contents:
the utility model aims to solve the technical problem that overcome prior art not enough, provide a simple structure, the explosion-proof lighting switch structure of processing of being convenient for.
In order to solve the technical problem, the utility model discloses a following technical scheme: an explosion-proof light switch structure comprising: casing, install the knob subassembly on the casing and be located the rotary switch of casing, trigger rotary switch through rotating the knob subassembly, the knob subassembly include: the fixing device comprises a fixing sleeve, a screw cap, a rotating shaft and a positioning plate, wherein the fixing sleeve is fixed on the shell, and the rotating shaft is rotatably connected in the fixing sleeve; the rotating cap is fixed at one end of the rotating shaft positioned outside the shell, the positioning plate is fixed at one end of the rotating shaft positioned inside the shell, and the positioning plate is provided with a non-circular positioning hole which corresponds to the cross section of the rotating shaft of the rotary switch and is in nested fit with the rotating shaft; the rotating screw cap drives the rotating shaft to rotate, and the rotating shaft drives the positioning plate to rotate and simultaneously drives the rotating shaft of the rotary switch to rotate through the rotating shaft, so that the rotary switch is triggered.
Furthermore, in the above technical scheme, the two ends of the rotating shaft are limited in the fixing sleeve through the limit formed by the snap spring and the flange.
Furthermore, in the above technical solution, a containing hole corresponding to the position of the positioning hole and capable of containing the rotary switch rotary shaft to extend into is formed along the end surface of the end of the rotary shaft fixed to the positioning plate.
Furthermore, in the above technical solution, the fixing sleeve and the housing are fixedly connected by a thread, and a boss for limiting is formed on an outer side surface of the fixing sleeve.
Furthermore, in the above technical solution, a counter bore is formed in the top surface of the screw cap, a mating hole corresponding to the counter bore is formed in the bottom surface of the screw cap, a connecting portion matching with the mating hole is formed at the end of the rotating shaft, and a connecting screw is inserted into the counter bore and then is in threaded connection with the connecting portion.
Furthermore, in the above technical solution, a fastening screw hole is formed on a side surface of the screw cap, and a fastening screw matched with the fastening screw hole abuts against a side surface of the connecting portion of the rotating shaft.
Further, in the above technical solution, a first sealing member is disposed between the fixing sleeve and the casing joint surface.
Further, in the above technical solution, a second sealing member is disposed between the joint surfaces of the rotating shaft and the fixed sleeve.
Furthermore, in the above technical solution, the positioning plate is fixed on the end surface of the rotating shaft by a screw, the positioning hole is square, and the cross section of the rotating shaft of the rotary switch is square.
The utility model adopts the above technical scheme after, use the utility model discloses the time, the rotating screw cap drive the pivot and rotate, drive the rotation axis that drives rotary switch when driving the locating plate pivoted through the pivot and rotate, make rotary switch trigger, the utility model discloses a direct rotation axis through pivot and rotary switch cooperates, but connects through the locating plate, because locating plate processing is simple, can directly form the non-circular locating hole of nested complex with the rotation axis formation through the punch press, with regard to like this great simplification course of working, reduction in production cost.
Description of the drawings:
fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic diagram of the matching between the middle positioning plate and the rotating shaft of the present invention.
The specific implementation mode is as follows:
the present invention will be further described with reference to the following specific embodiments and accompanying drawings.
See fig. 1, the utility model relates to an explosion-proof lighting switch structure, include: a housing 1, a knob assembly 2 and a rotary switch 3.
The housing 1 is a relatively closed plastic box, and functions to close the rotary switch 3 and isolate it from the external space, thereby preventing explosion caused by fire which may be generated during its operation. When in use, the shell 1 can be matched with other electrical parts, such as an explosion-proof electrical box and the like.
The rotary switch 3 is fixed inside the housing 1, and the rotary switch 3 has a rotary shaft 31, and the rotary switch 3 is activated by rotating the rotary shaft 31. At least a section of the rotating shaft 31 has a non-circular cross-section, typically square or semi-circular.
The knob assembly 2 comprises: the fixing device comprises a fixing sleeve 21, a screw cap 22, a rotating shaft 23, a positioning plate 24, a connecting screw 25, a fastening screw 26, a first sealing member 27 and a second sealing member 28.
The fixing sleeve 21 has a hollow shaft hole, and is communicated with the inside and the outside of the shell 1 through the shaft hole. The fixed sleeve 21 is fixed on the housing 1, and the two are connected by screw thread. A stopper boss 211 is formed on the outer surface of the fixing sleeve 21, and the fixing sleeve 21 is stopped by the stopper boss 211. A first seal 27 is provided between the joint surfaces of the limit boss 211 and the housing 1, and the first seal 27 ensures sealing therebetween.
The screw cap 22 is used for driving the rotating shaft 23 to rotate, the screw cap 22 is fixed at one end of the rotating shaft 23 positioned outside the shell 1, and the connecting mode of the screw cap 22 and the rotating shaft 23 is as follows: the top surface of the screw cap 22 is provided with a counter bore 221, the bottom surface thereof is provided with a matching hole 222 corresponding to the counter bore 221, the end part of the end of the rotating shaft 23 positioned at the outer side of the casing 1 is provided with a connecting part 233 matched with the matching hole 222, and a connecting screw 25 is inserted from the counter bore 221 and then is in threaded connection with the connecting part 233.
The mating hole 222 and the connecting portion 233 may be non-rotatably formed with non-circular cross-sections. Of course, if the circular cross section is also possible for the convenience of processing, both must be fastened by the auxiliary fastening member. The auxiliary fastening component is a fastening screw 26, a fastening screw hole 223 is formed on the side surface of the screw cap 22, the fastening screw 26 matched with the fastening screw hole 223 is pressed against the side surface of the connecting part 233 of the rotating shaft 23, so that the side surface of the connecting part 233 is pressed against, and the rotation of the connecting part 233 is prevented.
The rotating shaft 23 is rotatably connected in the fixed sleeve 21. The screw cap 22 is fixed at one end of the rotating shaft 23 outside the housing 1, and the positioning plate 24 is fixed at one end of the rotating shaft 23 inside the housing 1. The two ends of the rotating shaft 23 are limited in the fixed sleeve 21 through the limit formed by the clamp spring 231 and the flange 232.
The positioning plate 24 is fixed on the end face of the rotating shaft 23 through a screw, and the positioning plate 24 is provided with a non-circular positioning hole 241 which corresponds to the cross section of the rotating shaft 31 of the rotary switch 3 and forms a nesting fit with the rotating shaft 31. Specifically, as shown in fig. 2, in the present embodiment, the positioning hole 241 is square, and the cross section of the rotating shaft 31 of the rotary switch 3 is square. Thus, when the rotating shaft 31 is engaged with the positioning hole 241, the two cannot rotate relatively.
Because the rotating shaft 31 of the rotary switch 3 is long, a containing hole 230 corresponding to the position of the positioning hole 241 and capable of containing the rotary switch 3 with the rotary shaft 31 extending into is arranged on the end surface of the end of the rotary shaft 23 fixed with the positioning plate 24. The containing hole 230 can be directly processed into a circular hole through a drilling machine, so that the processing process is simple.
In addition, in order to ensure the sealing, a second sealing member 28 is arranged between the joint surfaces of the rotating shaft 23 and the fixed sleeve 21.
When the rotary switch is in operation, the rotary cap 22 drives the rotating shaft 23 to rotate, and the rotating shaft 23 drives the positioning plate 24 to rotate and simultaneously drives the rotating shaft 31 of the rotary switch 3 to rotate, so that the rotary switch 3 is triggered.
Of course, the above description is only an exemplary embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes and modifications made by the constructions, features, and principles of the present invention in accordance with the claims of the present invention are intended to be included in the scope of the present invention.
Claims (9)
1. An explosion-proof light switch structure comprising: casing (1), install knob subassembly (2) on casing (1) and be located rotary switch (3) of casing (1), trigger rotary switch (3), its characterized in that through rotating knob subassembly (2):
the knob assembly (2) comprises: the fixing device comprises a fixing sleeve (21), a screw cap (22), a rotating shaft (23) and a positioning plate (24), wherein the fixing sleeve (21) is fixed on the shell (1), and the rotating shaft (23) is rotatably connected in the fixing sleeve (21); the screw cap (22) is fixed at one end of the rotating shaft (23) positioned outside the shell (1), the positioning plate (24) is fixed at one end of the rotating shaft (23) positioned inside the shell (1), and the positioning plate (24) is provided with a non-circular positioning hole (241) which corresponds to the cross section of the rotating shaft (31) of the rotary switch (3) and is in nested fit with the rotating shaft (31);
the rotating screw cap (22) drives the rotating shaft (23) to rotate, the rotating shaft (23) drives the positioning plate (24) to rotate and simultaneously drives the rotating shaft (31) of the rotary switch (3) to rotate, and the rotary switch (3) is triggered.
2. An explosion proof light switch structure according to claim 1, wherein: the two ends of the rotating shaft (23) are limited in the fixed sleeve (21) through the limit formed by the clamp spring (231) and the flange (232).
3. An explosion proof light switch structure according to claim 1, wherein: one end of the rotating shaft (23) fixed with the positioning plate (24) is provided with a containing hole (230) along the end surface, wherein the containing hole corresponds to the positioning hole (241) in position and can contain the rotating shaft (31) of the rotary switch (3) to stretch into.
4. An explosion proof light switch structure according to claim 1, wherein: the fixed sleeve (21) is fixedly connected with the shell (1) through threads, and a boss (211) for limiting is formed on the outer side face of the fixed sleeve (21).
5. An explosion proof light switch structure according to claim 1, wherein: the top surface of the screw cap (22) is provided with a counter bore (221), the bottom surface of the screw cap is provided with a matching hole (222) corresponding to the counter bore (221), the end part of the rotating shaft (23) is provided with a connecting part (233) matched with the matching hole (222), and a connecting screw (25) is inserted from the counter bore (221) and then is in threaded connection with the connecting part (233).
6. An explosion proof light switch structure according to claim 5, wherein: the side surface of the screw cap (22) is provided with a fastening screw hole (223), and a fastening screw (26) matched with the fastening screw hole (223) is pressed against the side surface of the connecting part (233) of the rotating shaft (23).
7. An explosion proof light switch structure according to claim 1, wherein: a first sealing element (27) is arranged between the combining surface of the fixed sleeve (21) and the shell (1).
8. An explosion proof light switch structure according to claim 1, wherein: and a second sealing element (28) is arranged between the joint surfaces of the rotating shaft (23) and the fixed sleeve (21).
9. An explosion proof light switch structure according to any one of claims 1 to 8, wherein: the positioning plate (24) is fixed on the end face of the rotating shaft (23) through a screw, the positioning hole (241) is square, and the cross section of the rotating shaft (31) of the rotary switch (3) is square.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922445538.4U CN211182058U (en) | 2019-12-28 | 2019-12-28 | Explosion-proof lighting switch structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922445538.4U CN211182058U (en) | 2019-12-28 | 2019-12-28 | Explosion-proof lighting switch structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211182058U true CN211182058U (en) | 2020-08-04 |
Family
ID=71809362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922445538.4U Active CN211182058U (en) | 2019-12-28 | 2019-12-28 | Explosion-proof lighting switch structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211182058U (en) |
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2019
- 2019-12-28 CN CN201922445538.4U patent/CN211182058U/en active Active
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