CN114121534B - Switch assembly and explosion-proof box - Google Patents
Switch assembly and explosion-proof box Download PDFInfo
- Publication number
- CN114121534B CN114121534B CN202111221267.XA CN202111221267A CN114121534B CN 114121534 B CN114121534 B CN 114121534B CN 202111221267 A CN202111221267 A CN 202111221267A CN 114121534 B CN114121534 B CN 114121534B
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- shaft
- screw
- hole
- mounting hole
- connecting portion
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
- H01H19/02—Details
- H01H19/10—Movable parts; Contacts mounted thereon
- H01H19/14—Operating parts, e.g. turn knob
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
- H01H19/02—Details
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
- H01H19/02—Details
- H01H19/04—Cases; Covers
- H01H19/06—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/02—Bases, casings, or covers
- H01H9/04—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings
- H01H9/042—Explosion-proof cases
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
Abstract
The embodiment of the invention provides a switch assembly and an explosion-proof box. The explosion-proof box of the embodiment of the invention comprises: a housing; the change-over switch is arranged in the shell and is provided with a knob shaft; the connecting shaft is rotatably arranged on the shell, and the first end part of the connecting shaft stretches into the shell; and the coupler is positioned in the shell and comprises a first connecting part, a second connecting part and an elastic part, wherein the first connecting part is connected with the knob shaft, the second connecting part is connected with the first end part of the connecting shaft, one end of the elastic part is connected with the first connecting part, the other end of the elastic part is connected with the second connecting part, and the elastic part can deform along the radial direction of the connecting shaft. Therefore, the explosion-proof box provided by the embodiment of the invention has the advantages of high installation fault tolerance and convenience in driving the knob shaft to rotate by the connecting shaft.
Description
Technical Field
The invention relates to the technical field of explosion suppression boxes, in particular to a switch assembly and an explosion suppression box.
Background
The explosion-proof equipment is widely applied to coal mines or other mines, the working principle of the existing explosion-proof shell is to separate the internal space of the electrical equipment from the surrounding environment, and when the inside of the box body explodes, the shell can bear the generated explosion pressure without damage. Meanwhile, the gaps of the shell structure can cool the flame or reduce the propagation speed of the flame, so that high-temperature objects generated by the flame or the flame cannot pass through the flame-proof box, and the purpose of flame-proof is achieved. In the related art, a rotary square shaft and a connecting shaft of a conversion switch for a mining explosion-proof box body are hard-connected with a switch wrench. The straightness that hangs down of switch terminal surface and flameproof housing inner wall need be guaranteed in the installation, still need guarantee switch knob square shaft, connecting axle and switch spanner's concentricity, if can not satisfy straightness and concentricity, can appear the switch spanner and twist laborious condition, can appear the switch spanner and can not twist when serious. Because the fixed sleeve is welded on the flameproof shell, welding deformation can occur after welding, and the flatness of the flameproof shell cannot be guaranteed, the perpendicularity of the switch end face and the inner wall of the flameproof shell, and the concentricity of the switch knob square shaft, the connecting shaft and the switch spanner cannot be guaranteed at all times during installation. Therefore, the structure not only has high processing precision requirement, but also can improve the rejection rate of products.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems in the related art to some extent. To this end, embodiments of the present invention provide a switch assembly and an explosion proof box.
The explosion-proof box of the embodiment of the invention comprises:
a housing;
the change-over switch is arranged in the shell and is provided with a knob shaft;
the connecting shaft is rotatably arranged on the shell, and the first end part of the connecting shaft stretches into the shell; and
the shaft coupling, the shaft coupling is located in the casing, the shaft coupling includes first connecting portion, second connecting portion and elastic part, first connecting portion with the knob hub connection, the second connecting portion with the connecting axle first end connection, the one end of elastic part with first connecting portion are connected, the other end of elastic part with the second connecting portion are connected, the elastic part can follow the radial emergence deformation of connecting axle.
Therefore, the explosion-proof box provided by the embodiment of the invention has the advantages of high installation fault tolerance and convenience in driving the knob shaft to rotate by the connecting shaft.
In some embodiments, the first connection portion has a first mounting hole into which the knob shaft is fitted, and the second connection portion has a second mounting hole into which the first end of the connection shaft is fitted.
In some embodiments, the first connecting part is provided with a first screw hole extending along the radial direction of the first mounting hole, the first screw hole is communicated with the first mounting hole, a first screw in threaded connection with the first screw hole is arranged in the first screw hole, and the first screw is abutted against the knob shaft;
the second connecting portion is provided with a second screw hole extending along the radial direction of the second mounting hole, the second screw hole is communicated with the second mounting hole, a second screw in threaded connection with the second screw hole is arranged in the second screw hole, and the second screw abuts against the connecting shaft.
The explosion-proof box according to the embodiment of the invention further comprises:
the change-over switch bracket is provided with a change-over switch; and
and the first part of the switch flitch is fixed on the inner surface of the shell, the second part of the switch flitch is connected with the change-over switch bracket, and the first part is vertical to the second part.
The explosion-proof box according to the embodiment of the invention further comprises:
the fixing sleeve is fixed on the shell and provided with a fixing hole;
the copper sleeve is in interference fit in the fixing hole, the copper sleeve is provided with a rotating hole, the connecting shaft is rotatably arranged in the rotating hole, and the first end part and the second end part of the connecting shaft extend out of the fixing hole; and
and the spanner is connected with the second end part of the connecting shaft.
In some embodiments, the outer surface of the end of the copper sleeve is a tapered surface.
In some embodiments, the first end of the connecting shaft includes a stop portion and an insert portion, the insert portion being fitted within the second mounting hole, the stop portion having a diameter greater than a diameter of the rotation hole.
In some embodiments, the outer surface of the insert includes an arcuate surface and a planar surface that are connected to one another, the planar surface facing the second screw hole, the second screw bearing against the planar surface.
The invention also proposes a switch assembly comprising:
a change-over switch having a knob shaft;
a connecting shaft; and
the shaft coupling, the shaft coupling includes first connecting portion, second connecting portion and elastic part, first connecting portion with the knob hub connection, the second connecting portion with the first end connection of connecting axle, the one end of elastic part with first connecting portion are connected, the other end of elastic part with the second connecting portion are connected, the elastic part can follow the radial emergence deformation of connecting axle.
In some embodiments, the first connection portion has a first mounting hole into which the knob shaft is fitted, and the second connection portion has a second mounting hole into which the first end of the connection shaft is fitted.
In some embodiments, the first connecting part is provided with a first mounting hole, the knob shaft is matched in the first mounting hole, the first connecting part is provided with a first screw hole extending along the radial direction of the first mounting hole, the first screw hole is communicated with the first mounting hole, a first screw in threaded connection with the first screw hole is arranged in the first screw hole, and the first screw is abutted against the knob shaft;
the second connecting portion is provided with a second mounting hole, the first end portion of the connecting shaft is matched in the second mounting hole, the second connecting portion is provided with a second screw hole extending radially along the second mounting hole, the second screw hole is communicated with the second mounting hole, a second screw in threaded connection with the second screw hole is arranged in the second screw hole, and the second screw abuts against the connecting shaft.
Drawings
Fig. 1 is a front view of an explosion proof box according to an embodiment of the present invention.
Fig. 2 is a side view of an explosion proof box according to an embodiment of the present invention.
Fig. 3 is a cross-sectional view of an explosion proof box according to an embodiment of the present invention.
Reference numerals:
an explosion-proof box 100;
a housing 1;
a change-over switch 2, a knob shaft 21, a change-over switch bracket 22, and a switch board 23;
the coupling 3, the first connection portion 31, the first mounting hole 311, the first screw hole 312, the first screw 313, the second connection portion 32, the second mounting hole 321, the second screw hole 322, the second screw 323, the elastic portion 33;
a connecting shaft 4, a first end 41, a limiting part 411, an insertion part 412, and a second end 42;
a fixing sleeve 5, a fixing hole 51;
a copper sleeve 6;
and a spanner 7.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
The flameproof housing 100 of the embodiment of the present invention is described below with reference to the drawings. As shown in fig. 1 to 3, the explosion proof box 100 according to the embodiment of the present invention includes a housing 1, a change-over switch 2, a connection shaft 4, and a coupling 3.
The change-over switch 2 is provided in the housing 1, and the change-over switch 2 has a knob shaft 21. The connecting shaft 4 is rotatably provided on the housing 1, and a first end 41 of the connecting shaft 4 protrudes into the housing 1. The coupling 3 is located in the housing 1, and the coupling 3 includes a first connection portion 31, a second connection portion 32, and an elastic portion 33. The first connecting portion 31 is connected to the knob shaft 21, the second connecting portion 32 is connected to the first end 41 of the connecting shaft 4, one end of the elastic portion 33 is connected to the first connecting portion 31, the other end of the elastic portion 33 is connected to the second connecting portion 32, and the elastic portion 33 is deformable in the radial direction of the connecting shaft 4.
Specifically, when the elastic portion 33 is not deformed, the rotation axis of the first connecting portion 31 coincides with the rotation axis of the second connecting portion 32; when a part of the elastic portion 33 is deformed in the radial direction of the connecting shaft 4, the rotation axis of the first connecting portion 31 and the rotation axis of the second connecting portion 32 may be located at different positions in the radial direction of the connecting shaft 4 (the axis of the first connecting portion 31 and the axis of the second connecting portion 32 are not concentric), or the rotation axis of the first connecting portion 31 and the rotation axis of the second connecting portion 32 may intersect (the axis of the first connecting portion 31 and the axis of the second connecting portion 32 are not concentric).
The explosion proof box 100 according to the embodiment of the present invention makes the extending direction of the rotation axis of the first connection portion 31 be the same as the extending direction of the rotation axis of the knob shaft 21 by connecting the first connection portion 31 with the knob shaft 21; the second connecting portion 32 is connected with the first end portion 41 of the connecting shaft 4 such that the extending direction of the rotation axis of the second connecting portion 32 is the same as the extending direction of the rotation axis of the connecting shaft 4. And one end of the elastic portion 33 is connected with the first connecting portion 31, and the other end of the elastic portion 33 is connected with the second connecting portion 32, so that when the second connecting portion 32 rotates under the driving of the connecting shaft 4, the second connecting portion 32 can drive the first connecting portion 31 to rotate through the elastic portion 33, and further drive the knob shaft 21 to rotate.
When the rotation axis of the knob shaft 21 coincides with the rotation axis of the connection shaft 4, the elastic portion 33 does not need to be deformed. When the rotation axis of the knob shaft 21 after the installation and the rotation axis of the connecting shaft 4 are located at different positions in the radial direction of the connecting shaft 4 or the rotation axis of the knob shaft 21 intersects with the rotation axis of the connecting shaft 4 due to the factors of deformation after welding, machining error, bending forming error, surface flatness of the explosion proof box, installation error and the like, a part of the elastic part 33 deforms along the radial direction of the connecting shaft 4 so that the extending direction of the rotation axis of the first connecting part 31 is the same as the extending direction of the rotation axis of the knob shaft 21 and the extending direction of the rotation axis of the second connecting part 32 is the same as the extending direction of the rotation axis of the connecting shaft 4, thereby the connecting shaft 4 can still drive the knob shaft 21 to rotate through the coupling 3 when the rotation axis of the knob shaft 21 and the rotation axis of the connecting shaft 4 do not coincide, and thus the fault tolerance of the explosion proof box 100 according to the embodiment of the invention is improved.
Therefore, the explosion-proof box 100 according to the embodiment of the invention has the advantages of high installation fault tolerance and convenience for the connecting shaft 4 to drive the knob shaft 21 to rotate.
As shown in fig. 1 to 3, the explosion proof box 100 according to the embodiment of the present invention includes a housing 1, a change-over switch 2, a connection shaft 4, and a coupling 3.
The change-over switch 2 is provided in the housing 1, and the change-over switch 2 has a knob shaft 21, and the change-over switch 2 can be turned on and off by turning the knob shaft 21.
As shown in fig. 3, in some embodiments, the flameproof housing 100 according to an embodiment of the present invention further includes a transfer switch bracket 22 and a switch plate 23.
The change-over switch 2 is mounted on a change-over switch holder 22. The first part 231 of the switch board 23 is fixed to the inner surface of the housing 1 and the second part 232 of the switch board 23 is connected to the switch bracket 22. Specifically, the first portion 231 and the second portion 232 of the switch board 23 are both plate-shaped, and the second portion 232 of the switch board 23 is disposed opposite to the switch 2 and at least a portion of the switch bracket 22. The change-over switch 2 is mounted in the housing 1 by means of a switch bracket 22 and a switch board 23.
The first portion 231 is perpendicular to the second portion 232 so that there is a space between the change-over switch 2 and the inner surface of the housing 1 for mounting the coupling 3 and a portion of the connecting shaft 4. For example, the end face of the first portion 231 is perpendicular to the front-rear direction, and the end face of the second portion 232 is perpendicular to the end face of the first portion 231, as shown in the front-rear direction.
As shown in fig. 3, in some embodiments, the flameproof housing 100 according to an embodiment of the present invention further includes a fixing sleeve 5, a copper sleeve 6, and a wrench 7.
The fixing sleeve 5 is fixed to the housing 1, and the fixing sleeve 5 has a fixing hole 51. Specifically, a through hole is provided in the housing 1, and the fixing sleeve 5 passes through the through hole and is welded to the housing 1.
The copper bush 6 is in interference fit in the fixing hole 51, so that the copper bush 6 is firmly connected with the fixing hole 51. The connection shaft 4 is rotatably provided on the housing 1, specifically, the copper bush 6 has a rotation hole 61, the connection shaft 4 is rotatably provided in the rotation hole 61, the first end 41 and the second end 42 of the connection shaft 4 each extend out of the fixing hole 51, and the wrench 7 is connected to the second end 42 of the connection shaft 4. Therefore, the connecting shaft 4 can be driven to rotate by rotating the wrench 7, and the physical strength can be saved by driving the connecting shaft 4 to rotate by the wrench 7. For example, the rotation hole 61 extends in the front-rear direction, so that the direction of the rotation axis of the connection shaft 4 extends in the front-rear direction.
In some embodiments, the outer surface of the end of the copper sleeve 6 is a tapered surface. Specifically, the diameter of the outer surface of the end portion of the copper bush 6 decreases in the direction away from the copper bush 6 in the extending direction of the rotation hole 61. Thereby, the outer surface of the end portion of the copper bush 6 can serve as a guide surface, facilitating the entry of the copper bush 6 into the fixing hole 51, thereby facilitating the installation of the copper bush 6 to the fixing bush 5. For example, the outer surface of the rear end portion of the copper bush 6 is reduced in diameter rearward,
As shown in fig. 1 to 3, the coupling 3 is located in the housing 1, and the coupling 3 includes a first connection portion 31, a second connection portion 32, and an elastic portion 33. Specifically, the coupling 3 is located between the switch bracket 22 and the first portion 231 of the switch board 23. Alternatively, the coupling 3 is a spring coupling.
The first connection portion 31 is connected to the knob shaft 21. Specifically, the first connection portion 31 has a first mounting hole 311, and the knob shaft 21 is fitted in the first mounting hole 311. The first connecting portion 31 is provided with a first screw hole 312 extending radially along the first mounting hole 311, the first screw hole 312 communicates with the first mounting hole 311, a first screw 313 screwed therein is provided in the first screw hole 312, and the first screw 313 abuts against the knob shaft 21. Thus, the first connection portion 31 and the knob shaft 21 can be stably connected, so that the first connection portion 31 can drive the knob shaft 21 to rotate. For example, the first mounting hole 311 extends in the front-rear direction, and the first screw hole 312 extends in the left-right direction as shown in the drawing.
The second connecting portion 32 is connected to the first end 41 of the connecting shaft 4. Specifically, the second connecting portion 32 has a second mounting hole 321, and the first end 41 of the connecting shaft 4 is fitted in the second mounting hole 321. The second connecting portion 32 is provided with a second screw hole 322 extending radially along the second mounting hole 321, the second screw hole 322 is communicated with the second mounting hole 321, a second screw 323 in threaded connection with the second screw hole 322 is arranged in the second screw hole 322, and the second screw 323 abuts against the connecting shaft 4. Thereby, the second connecting portion 32 can be stably connected with the first end portion 41 of the connecting shaft 4, so that the connecting shaft 4 can drive the second connecting portion 32 to rotate. For example, the second mounting hole 321 extends in the front-rear direction, and the second screw hole 322 extends in the left-right direction.
One end of the elastic portion 33 is connected to the first connecting portion 31, the other end of the elastic portion 33 is connected to the second connecting portion 32, and the elastic portion 33 is deformable in the radial direction of the connecting shaft 4. Specifically, when the elastic portion 33 is not deformed, the rotation axis of the first connecting portion 31 coincides with the rotation axis of the second connecting portion 32; when a part of the elastic portion 33 is deformed in the radial direction of the connecting shaft 4, the rotation axis of the first connecting portion 31 and the rotation axis of the second connecting portion 32 may be located at different positions in the radial direction of the connecting shaft 4 (the axis of the first connecting portion 31 and the axis of the second connecting portion 32 are not concentric), or the rotation axis of the first connecting portion 31 and the rotation axis of the second connecting portion 32 may intersect (the axis of the first connecting portion 31 and the axis of the second connecting portion 32 are not concentric).
The explosion proof box 100 according to the embodiment of the present invention makes the extending direction of the rotation axis of the first connection portion 31 be the same as the extending direction of the rotation axis of the knob shaft 21 by connecting the first connection portion 31 with the knob shaft 21; the second connecting portion 32 is connected with the first end portion 41 of the connecting shaft 4 such that the extending direction of the rotation axis of the second connecting portion 32 is the same as the extending direction of the rotation axis of the connecting shaft 4. And one end of the elastic portion 33 is connected with the first connecting portion 31, and the other end of the elastic portion 33 is connected with the second connecting portion 32, so that when the second connecting portion 32 rotates under the driving of the connecting shaft 4, the second connecting portion 32 can drive the first connecting portion 31 to rotate through the elastic portion 33, and further drive the knob shaft 21 to rotate.
As shown in fig. 1 to 3, the first end 41 of the connecting shaft 4 protrudes into the housing 1. Specifically, the first end 41 of the connecting shaft 4 includes a limiting portion 411 and an insertion portion 412, the insertion portion 412 being fitted in the second mounting hole 321, the diameter of the limiting portion 411 being larger than the diameter of the rotation hole 61. This prevents the connection shaft 4 from moving from the outside of the housing 1, and prevents the first end 41 of the connection shaft 4 from moving to the outside of the housing 1. For example, the insertion portion 412, the limiting portion 411, and the rotation hole 61 are provided in this order from the rear to the front, and the limiting portion 411 can prevent the connecting shaft 4 from moving forward.
In some embodiments, the outer surface of the insert 412 includes an arcuate surface and a planar surface that are connected to one another, the planar surface facing the second screw hole 322, and the second screw 323 resting against the planar surface. The abutment of the second screw 323 on the flat surface may increase the contact area of the second screw 323 with the outer surface of the insertion portion 412, thereby making the connection of the insertion portion 412 with the second connection portion 32 more stable.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (10)
1. An explosion-proof box, characterized by comprising:
a housing;
the change-over switch is arranged in the shell and is provided with a knob shaft;
the connecting shaft is rotatably arranged on the shell, and the first end part of the connecting shaft stretches into the shell; and
the shaft coupling, the shaft coupling is located in the casing, the shaft coupling includes first connecting portion, second connecting portion and elastic part, first connecting portion with the knob hub connection, the second connecting portion with the connecting axle first end connection, the one end of elastic part with first connecting portion are connected, the other end of elastic part with the second connecting portion are connected, the elastic part can follow the radial emergence deformation of connecting axle.
2. The explosion proof box of claim 1, wherein said first connection portion has a first mounting hole, said knob shaft fits within said first mounting hole, said second connection portion has a second mounting hole, and said first end of said connection shaft fits within said second mounting hole.
3. The explosion-proof tank according to claim 2, wherein,
the first connecting part is provided with a first screw hole extending along the radial direction of the first mounting hole, the first screw hole is communicated with the first mounting hole, a first screw in threaded connection with the first screw hole is arranged in the first screw hole, and the first screw is abutted against the knob shaft;
the second connecting portion is provided with a second screw hole extending along the radial direction of the second mounting hole, the second screw hole is communicated with the second mounting hole, a second screw in threaded connection with the second screw hole is arranged in the second screw hole, and the second screw abuts against the connecting shaft.
4. The explosion suppression box of claim 1, further comprising:
the change-over switch bracket is provided with a change-over switch; and
and the first part of the switch flitch is fixed on the inner surface of the shell, the second part of the switch flitch is connected with the change-over switch bracket, and the first part is vertical to the second part.
5. The explosion suppression box of claim 3, further comprising:
the fixing sleeve is fixed on the shell and provided with a fixing hole;
the copper sleeve is in interference fit in the fixing hole, the copper sleeve is provided with a rotating hole, the connecting shaft is rotatably arranged in the rotating hole, and the first end part and the second end part of the connecting shaft extend out of the fixing hole; and
and the spanner is connected with the second end part of the connecting shaft.
6. The explosion suppression box of claim 5, wherein the outer surface of the end of the copper sleeve is a tapered surface.
7. The explosion suppression box according to claim 5, wherein the first end portion of the connecting shaft includes a limiting portion and an insertion portion, the insertion portion being fitted in the second mounting hole, the limiting portion having a diameter larger than that of the rotation hole.
8. The explosion proof box of claim 7, wherein the outer surface of the insert includes an arcuate surface and a planar surface that are connected to each other, the planar surface facing the second screw bore, the second screw bearing against the planar surface.
9. A switch assembly, comprising:
a change-over switch having a knob shaft;
a connecting shaft; and
the shaft coupling, the shaft coupling includes first connecting portion, second connecting portion and elastic part, first connecting portion with the knob hub connection, the second connecting portion with the first end connection of connecting axle, the one end of elastic part with first connecting portion are connected, the other end of elastic part with the second connecting portion are connected, the elastic part can follow the radial emergence deformation of connecting axle.
10. The switch assembly of claim 9, wherein the first connection portion has a first mounting hole into which the knob shaft is fitted, the first connection portion being provided with a first screw hole extending radially along the first mounting hole, the first screw hole being in communication with the first mounting hole, the first screw hole being provided with a first screw therein in threaded connection therewith, the first screw bearing against the knob shaft;
the second connecting portion is provided with a second mounting hole, the first end portion of the connecting shaft is matched in the second mounting hole, the second connecting portion is provided with a second screw hole extending radially along the second mounting hole, the second screw hole is communicated with the second mounting hole, a second screw in threaded connection with the second screw hole is arranged in the second screw hole, and the second screw abuts against the connecting shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111221267.XA CN114121534B (en) | 2021-10-20 | 2021-10-20 | Switch assembly and explosion-proof box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111221267.XA CN114121534B (en) | 2021-10-20 | 2021-10-20 | Switch assembly and explosion-proof box |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114121534A CN114121534A (en) | 2022-03-01 |
| CN114121534B true CN114121534B (en) | 2023-07-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111221267.XA Active CN114121534B (en) | 2021-10-20 | 2021-10-20 | Switch assembly and explosion-proof box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114121534B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104037004A (en) * | 2014-05-23 | 2014-09-10 | 刘辉扬 | Switch |
| WO2014169818A1 (en) * | 2013-04-16 | 2014-10-23 | 苏州宝时得电动工具有限公司 | Screw clamping device and screw tool |
| WO2015033884A1 (en) * | 2013-09-05 | 2015-03-12 | Idec株式会社 | Operating device for switching device, and switching device |
| CN106531524A (en) * | 2016-11-28 | 2017-03-22 | 北京瑞赛长城航空测控技术有限公司 | Explosive-proof rotary knob mechanism |
| CN207669247U (en) * | 2017-11-30 | 2018-07-31 | 南京德朔实业有限公司 | Electric tool |
| CN111095456A (en) * | 2017-09-26 | 2020-05-01 | 伊顿智能动力有限公司 | Operating accessory |
| CN111531902A (en) * | 2020-05-22 | 2020-08-14 | 无锡先导智能装备股份有限公司 | Film material compounding device |
| CN211858446U (en) * | 2020-09-27 | 2020-11-03 | 江苏三恒科技股份有限公司 | Flame-proof switch |
| CN112945038A (en) * | 2020-12-24 | 2021-06-11 | 煤炭科学技术研究院有限公司 | Blasting charge bidirectional antiskid device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102543515B (en) * | 2010-12-25 | 2016-02-24 | 赛恩倍吉科技顾问（深圳）有限公司 | There is the electronic installation of safety switch control structure |
| JP6322965B2 (en) * | 2013-11-18 | 2018-05-16 | ヤマハ株式会社 | Rotation knob |
-
2021
- 2021-10-20 CN CN202111221267.XA patent/CN114121534B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014169818A1 (en) * | 2013-04-16 | 2014-10-23 | 苏州宝时得电动工具有限公司 | Screw clamping device and screw tool |
| WO2015033884A1 (en) * | 2013-09-05 | 2015-03-12 | Idec株式会社 | Operating device for switching device, and switching device |
| CN104037004A (en) * | 2014-05-23 | 2014-09-10 | 刘辉扬 | Switch |
| CN106531524A (en) * | 2016-11-28 | 2017-03-22 | 北京瑞赛长城航空测控技术有限公司 | Explosive-proof rotary knob mechanism |
| CN111095456A (en) * | 2017-09-26 | 2020-05-01 | 伊顿智能动力有限公司 | Operating accessory |
| CN207669247U (en) * | 2017-11-30 | 2018-07-31 | 南京德朔实业有限公司 | Electric tool |
| CN111531902A (en) * | 2020-05-22 | 2020-08-14 | 无锡先导智能装备股份有限公司 | Film material compounding device |
| CN211858446U (en) * | 2020-09-27 | 2020-11-03 | 江苏三恒科技股份有限公司 | Flame-proof switch |
| CN112945038A (en) * | 2020-12-24 | 2021-06-11 | 煤炭科学技术研究院有限公司 | Blasting charge bidirectional antiskid device |
Non-Patent Citations (1)
| Title |
|---|
| 煤矿用隔爆箱体加工工艺的优化设计;王志锦;;煤矿机械(04);全文 * |
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