CN115910715A - Explosion-proof knob for switching on miniature circuit breaker in explosion-proof box - Google Patents
Explosion-proof knob for switching on miniature circuit breaker in explosion-proof box Download PDFInfo
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- CN115910715A CN115910715A CN202211676400.5A CN202211676400A CN115910715A CN 115910715 A CN115910715 A CN 115910715A CN 202211676400 A CN202211676400 A CN 202211676400A CN 115910715 A CN115910715 A CN 115910715A
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- 238000003756 stirring Methods 0.000 claims abstract description 28
- 238000010030 laminating Methods 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims description 56
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 239000000428 dust Substances 0.000 abstract description 11
- 230000001360 synchronised effect Effects 0.000 abstract description 5
- 240000007643 Phytolacca americana Species 0.000 description 20
- 238000004146 energy storage Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- 238000010892 electric spark Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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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
Abstract
The application discloses explosion-proof knob that carries out combined floodgate to miniature circuit breaker in the explosion-proof box, including the knob shell, the knob, pivot and stirring piece, the knob shell is connected on the explosion-proof box and is located outside the explosion-proof box, the knob sets up on the knob shell, and extend towards the inner chamber of knob shell, and be formed with the knob connecting piece with the laminating of knob shell inner wall, pivot and knob connecting piece fixed connection, the one end that the knob connecting piece was kept away from in the pivot extends into the explosion-proof box and is connected with stirring piece, knob drive knob connecting piece rotates around the axis of pivot, stirring piece and knob connecting piece synchronous rotation are formed with the rotation route, adjustable driving lever closing position and adjustable driving lever opening position are located stirring piece's rotation route. The rotary shaft is connected with the rotary shaft through the rotary knob connecting piece, the rotary shaft is arranged in the rotary knob shell, and the stirring piece is arranged in the explosion-proof box, so that the rotary shaft drives the stirring piece to rotate in a closed space, and dust is prevented from entering the explosion-proof box when the miniature circuit breaker is switched on.
Description
Technical Field
The application relates to the field of explosion-proof electrical equipment accessories, in particular to an explosion-proof knob for switching on a miniature circuit breaker in an explosion-proof box.
Background
The miniature circuit breaker is a terminal protection electric appliance which is most widely used in a power distribution device of a building electric terminal. The miniature circuit breaker consists of an adjustable deflector rod, contacts, a protection device (various releases), an arc extinguishing system and the like. The main contact of the microcircuit device is manually operated or electrically switched on. When the circuit is short-circuited or seriously overloaded, the armature of the overcurrent release is attracted, so that the free release mechanism acts, the movable contact is separated from the fixed contact, and the adjustable deflector rod can also rotate from the switching-on position to the switching-off position. The movable contact and the fixed contact can be closed by rotating the adjustable deflector rod from the switching-off position to the switching-on position, and the movable contact is locked on the switching-on position by the free tripping mechanism after the contacts are closed. It is worth noting that in the process of switching on the miniature circuit breaker, the active contact and the fixed contact need to be switched on rapidly, the situation of virtual connection of the miniature circuit breaker may happen, the virtual connection can enable the miniature circuit breaker to be switched off again, and the contact is caused to generate heat, and even the burning loss of the miniature circuit breaker can generate certain influence on the circuit safety.
The invention patent application publication No. CN107958826A discloses an operating handle for rapid switching on of a miniature circuit breaker, the operating handle comprises a main knob, an auxiliary knob and an energy storage torsion spring, and when the auxiliary knob rotates relative to the main knob, the energy storage torsion spring can be tightened or released; when the main knob and the auxiliary knob are assembled together, the auxiliary connecting cylinder is inserted into the inner cavity of the main connecting cylinder from the rear end of the main connecting cylinder, and the clamping block at the front end of the auxiliary knob is exposed out of the first notch and clamped on the front end face of the main connecting cylinder; the stop block at the rear end of the auxiliary knob is abutted against the rear end face of the main connecting cylinder. This patent is at combined floodgate miniature circuit breaker's in-process, rotates main knob earlier, and vice knob is rotated by the locating part restriction, and main knob rotation in-process, the energy storage torsional spring energy storage lasts and rotates main knob, rotates in-process main knob and backs up the locating part, and the energy storage torsional spring energy release drives vice knob and rotates, and vice knob drives miniature circuit breaker's rotary rod and rotates and then realize miniature section way ware combined floodgate.
The explosion-proof box is used for the combustible dust environment 20, 21 and 22, electric sparks are inevitably generated when circuit elements work, so that the explosion-proof box is in a closed state, the interior of the explosion-proof box is isolated from the outside, and dust is prevented from entering the explosion-proof box, so that the electric sparks are prevented from meeting dust in the combustible dust environment and causing explosion accidents. Although the related art can enable the miniature circuit breaker to be quickly switched on, the situation that dust does not enter the explosion-proof box in the switching-on process cannot be avoided.
Disclosure of Invention
In order to improve the condition that the dust got into explosion-proof case when closing a miniature circuit breaker, this application provides an explosion-proof knob that closes a floodgate to miniature circuit breaker in the explosion-proof case.
The application provides a pair of explosion-proof knob that closes a floodgate is carried out miniature circuit breaker in explosion-proof box adopts following technical scheme:
the utility model provides an explosion-proof knob that miniature circuit breaker to explosion-proof incasement carries out combined floodgate, includes knob shell, knob, pivot and dials the piece, the knob shell is connected on explosion-proof case and is located outside the explosion-proof case, the knob set up in on the knob shell, the knob be used for with the face that the knob shell is connected is towards the inner chamber of knob shell extends to be formed with the knob connecting piece of knob shell inner wall laminating, the pivot is located in the knob shell and with knob connecting piece fixed connection, the pivot is kept away from the one end of knob connecting piece extend into explosion-proof incasement with dial the piece and connect, the knob drive the knob connecting piece in surround in the knob shell the axis of pivot is rotated, dial the piece with knob connecting piece synchronous rotation is formed with the rotation route, adjustable driving lever on-off position and adjustable driving lever on-off position set up in the rotation route of dialling the piece.
Through adopting above-mentioned technical scheme, knob connecting piece, pivot and stirring piece can rotate in step, and the rotation route of stirring the piece passes through adjustable driving lever on-off position and adjustable driving lever off-off position, and when miniature circuit breaker was opened the floodgate, the piece can be rotated from the off-off position to the on-off position with adjustable driving lever to stirring the piece. The knob is connected with the knob shell in a rotating mode through the knob connecting piece attached to the inner wall of the knob shell, the knob shell is connected with the explosion-proof box and located outside the explosion-proof box, and the sealing performance of the inner cavity of the knob shell and the inner cavity of the explosion-proof box is guaranteed. The rotating shaft is connected with the knob connecting piece, the rotating shaft is arranged in the knob shell, and the stirring piece is arranged in the explosion-proof box, so that the rotating process of the rotating shaft driving stirring piece is in a closed space, and dust is prevented from entering the explosion-proof box when the miniature circuit breaker is switched on.
Optionally, the inside sealing member that is provided with of knob shell inner wall laminating of knob shell, the pivot is passed the sealing member, and with the sealing member rotates and connects, spacing breach has been seted up to the sealing member, the knob connecting piece centers on the pivot is provided with spacing lug, spacing lug set up in the spacing breach, spacing lug for the first central angle scope that the axis of pivot produced is less than spacing breach for the second central angle scope that the axis of pivot produced.
Through adopting above-mentioned technical scheme, the leakproofness of knob shell inner chamber has further been guaranteed to the sealing member, and spacing lug rotates in spacing breach and can restrict the rotation range of knob, knob connecting piece, pivot and stirring piece.
Optionally, the limiting projection rotates around the axis of the rotating shaft, the limiting projection forms a limiting path in the limiting notch, the starting point of the limiting path corresponds to the knob switch-on position, and the end point of the limiting path corresponds to the knob switch-off position.
By adopting the technical scheme, when the limiting lug rotates from the knob switching-on position to the knob switching-on position, the poking piece can rotate the adjustable poking rod from the switching-on position of the adjustable poking rod piece to the switching-on position of the adjustable poking rod piece, so that the miniature circuit breaker is switched on.
Optionally, the sealing member is a cylinder, the sealing member and the rotating shaft are coaxially arranged, a sealing member switching-on position and a sealing member switching-off position are arranged on the surface of the limiting notch, the sealing member switching-on position and the sealing member switching-off position are distributed on the same circumference formed by the axis of the sealing member at intervals, a third central angle generated by the axis of the rotating shaft and corresponding to the sealing member switching-on position and the sealing member switching-off position is equal to a fourth central angle generated by the rotating shaft and corresponding to the knob switching-on position and corresponding to the knob switching-off position, a switching-off hole is formed in the sealing member switching-off position, a limiting hole is formed in the surface of the knob connecting member provided with the limiting lug in a penetrating manner, a limiting rod synchronously rotating along with the knob connecting member penetrates through the limiting hole, the limiting rod is slidably connected with the limiting hole, and the rotating path of the limiting rod passes through the switching-off hole.
Through adopting above-mentioned technical scheme, because the gag lever post can slide in spacing hole, and gag lever post and knob connecting piece synchronous rotation, so when the knob rotated to the knob position of opening the floodgate, the gag lever post can get into and open the floodgate hole, and the gag lever post gets into the knob position of opening the floodgate and can restrict knob connecting piece, pivot and driving lever spare and continue to rotate.
Optionally, the gag lever post is kept away from the outer wall of the one end of sealing member becomes along the circumference evagination of gag lever post has the spring coupling block, the cover is equipped with reset spring on the gag lever post, reset spring one end with the knob connecting piece is kept away from spacing lug's face butt, the other end with the spring coupling block butt, be provided with fixed button on the spring coupling block, fixed button be used for with the gag lever post is pressed and is impressed in the opening brake hole and with it is fixed to open the brake hole.
Through adopting above-mentioned technical scheme, when miniature circuit breaker was in the combined floodgate state, the knob was located knob position of opening floodgate, and during fixed button pressed the gag lever post into the opening floodgate hole to be fixed in the opening floodgate hole with the gag lever post, reset spring received the compression this moment. When the miniature circuit breaker is in an opening state and needs to be switched on, the limit of the fixed button on the limiting rod is cancelled, the reset spring extends towards the direction of the spring connecting block and pushes out the limiting rod from the opening hole, the knob can rotate to the knob switching-on position at the moment, and the rotating shaft drives the shifting piece to rotate the adjustable shifting rod from the adjustable shifting rod opening position to the adjustable shifting rod switching-on position.
Optionally, the rotating shaft is sleeved with a torsion spring, one end of the torsion spring is connected with the surface of the sealing element away from the limiting notch, and the other end of the torsion spring is connected with the rotating shaft.
Through adopting above-mentioned technical scheme, when miniature circuit breaker is in the combined floodgate state, knob drive knob connecting piece rotates, and knob connecting piece drive spacing lug rotates to knob position of opening a floodgate, and the pivot is also taking place to rotate simultaneously, and the torsional spring tightens up the energy storage along with the pivot rotates, and meanwhile the gag lever post is pressed by fixed button and gets into in opening a floodgate hole to being fixed in opening a floodgate hole, the gag lever post has restricted the torsional spring this moment and has driven the pivot to rotate in order to open a floodgate position rotation to knob position of closing a floodgate with spacing lug by the knob. When the miniature circuit breaker is in an opening state and needs to be switched on, the limit of the fixed knob on the limiting rod is cancelled, the limiting rod is ejected out of a switch opening hole by the reset spring, the torsion spring releases energy at the moment, the driving rotating shaft rotates, the band-pass knob connecting piece and the stirring piece rotate simultaneously, the knob connecting piece drives the limiting lug and the knob to rotate from a knob switch opening position to a knob switch closing position, and the stirring piece drives the adjustable stirring rod to rotate from the switch opening position to the switch closing position so as to realize the switching on of the miniature circuit breaker.
After the miniature circuit breaker is switched on, the knob is rotated once more to drive the knob connecting piece, the limiting lug, the rotating shaft and the stirring piece to rotate simultaneously, so that the limiting lug is located at a knob switching-on position, the limiting rod is fixed in a switching-on hole, and the torsion spring tightens up the stored energy once more along with the rotation of the rotating shaft.
Optionally, the toggle member is provided with a first toggle rod and a second toggle rod, the first toggle rod and the second toggle rod rotate synchronously with the knob, the adjustable toggle rod is located between the first toggle rod and the second toggle rod, the distance between the first toggle rod and the second toggle rod is greater than the distance between the adjustable toggle rod opening position and the adjustable toggle rod closing position, and the adjustable toggle rod abuts against the first toggle rod when located at the adjustable toggle rod opening position.
By adopting the technical scheme, when the miniature circuit breaker is switched on, the adjustable deflector rod rotates from the adjustable deflector rod switch-on position to the adjustable deflector rod switch-off position, the adjustable deflector rod abuts against the first deflector rod when the adjustable deflector rod is positioned at the adjustable deflector rod switch-off position, and the first deflector rod rotates to the adjustable deflector rod switch-on position when the rotating shaft drives the first deflector rod to rotate. After the miniature circuit breaker is switched on, the first poke rod and the second poke rod are rotated back to the initial positions by the knob. The adjustable driving rod is located between the first poking rod and the second fluctuation rod, the second poking rod can avoid the fact that the adjustable driving rod is separated from the first poking rod when the first poking rod drives the adjustable driving rod to rotate, and the fact that the distance between the second poking rod and the first poking rod is larger than the distance between the adjustable driving rod opening position and the adjustable driving rod closing position can also avoid the fact that the second poking rod mistakenly touches the adjustable driving rod when the knob rotates to the knob opening position.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the rotary knob connecting piece attached to the inner wall of the rotary knob shell is connected with the rotary knob shell in a rotating mode, the rotary knob shell is connected with the explosion-proof box and located outside the explosion-proof box, sealing performance of an inner cavity of the rotary knob shell and an inner cavity of the explosion-proof box is guaranteed, the rotary shaft is connected with the rotary knob connecting piece, the rotary shaft is arranged in the rotary knob shell, the stirring piece is arranged in the explosion-proof box, the rotary shaft is driven to be in a rotating process to be in a closed space, and dust enters the explosion-proof box when the miniature circuit breaker is prevented from being switched on.
2. Through the one end and the sealing member with the torsional spring be connected, the other end is connected with the pivot, when miniature circuit breaker is in the combined floodgate state, rotate the knob to knob combined floodgate position by knob combined floodgate position, pivot and knob synchronous rotation, the torsional spring can tighten up the energy storage along with the rotation of pivot, the gag lever post is pressed into and gets into in the hole of opening the floodgate, the restriction torsional spring drives the pivot and rotates, when miniature circuit breaker is in the state of opening the floodgate and needs the combined floodgate, only need cancel the injecing to the gag lever post, after the gag lever post departed from the brake hole, the torsional spring energy release, it rotates to drive the pivot, the pivot drives to dial the piece and rotates, in order to realize miniature circuit breaker combined floodgate.
Drawings
Fig. 1 is an exploded view of an explosion-proof knob for closing a miniature circuit breaker in an explosion-proof box.
Fig. 2 is a schematic connection diagram of the toggle piece and the adjustable toggle rod when the knob is at the open position and the miniature circuit breaker is at the closed state.
Fig. 3 is an exploded view of an explosion-proof knob for closing a micro circuit breaker in an explosion-proof case.
Fig. 4 is a knob sectional view of an explosion-proof knob for closing a micro circuit breaker in an explosion-proof case.
Fig. 5 is a schematic connection diagram of the toggle piece and the adjustable toggle rod when the micro circuit breaker is in the open state when the knob is in the open position.
Fig. 6 is a schematic connection diagram of the dial and the adjustable dial rod when the knob is at the closing position.
Description of reference numerals: 1. a knob housing; 2. a knob; 21. a disc base; 22. holding the projection; 221. a rotary plate mounting groove; 3. a rotating shaft; 4. a toggle piece; 41. a first poke rod; 42. a second poker rod; 43. a mounting seat; 5. a knob connector; 51. a limiting hole; 52. a limiting bump; 53. a knob switch-on position; 54. opening a brake position by a knob; 6. a seal member; 61. a limiting notch; 62. opening a brake hole; 7. a torsion spring; 8. a limiting rod; 81. a spring connecting block; 9. a return spring; 10. rotating the plate; 11. an explosion-proof box; 12. an adjustable deflector rod; 121. the adjustable deflector rod opens the brake position; 122. the switch-on position of the deflector rod can be adjusted; 13. a fixed button; 14. a fixing hole; 15. the rotating shaft is connected with the hole.
Detailed Description
The present application is described in further detail below with reference to the attached drawings.
The embodiment of the application discloses an explosion-proof knob that closes a floodgate is carried out miniature circuit breaker in explosion-proof case. Referring to fig. 1 and 2, the explosion-proof knob for closing the miniature circuit breaker in the explosion-proof box comprises a knob shell 1, a knob 2, a rotating shaft 3 and a toggle piece 4. The knob shell 1 is connected with the explosion-proof box 11, the knob 2 is used for driving the stirring piece 4 to rotate, and the rotating shaft 3 is arranged in the knob shell 1 and used for connecting the knob 2 and the stirring piece 4.
Referring to fig. 2, the knob housing 1 is connected to the explosion-proof box 11 and located outside the explosion-proof box 11, in different embodiments, the knob housing 1 may be connected to the explosion-proof box 11 in different manners, but it is only necessary to ensure that dust in the environment does not enter the explosion-proof box 11 from the connection between the knob housing 1 and the explosion-proof box 11, the knob housing 1 may be connected to the explosion-proof box 11 in a welding manner, or may be connected to the explosion-proof box 11 in a bolt connection manner, and as an example, the knob housing 1 is connected to the explosion-proof box 11 in a threaded connection manner. The threaded connection can ensure the sealing performance of the explosion-proof box 11, and the explosion-proof knob can be conveniently replaced when the explosion-proof knob is damaged. In different embodiments, the knob housing 1 may be made of different materials, but the explosion-proof knob is made of a material having sufficient sealing performance and explosion-proof performance in consideration of the properties and working environment of the explosion-proof knob, and as an example, the knob housing 1 is made of stainless steel, and the knob housing 1 has a cylindrical shape.
Referring to fig. 1 and 2, a knob 2 is provided on a knob case 1. In different embodiments, the knob 2 may have different shapes, but it is only necessary that the knob 2 is convenient for a user to rotate, for example, the knob 2 includes a disk seat 21 and a holding protrusion 22 disposed on the disk seat 21, and the holding protrusion 22 may have different shapes, may be a rectangular parallelepiped, or may have a polygonal prism. It is noted that the diameter of the disc seat 21 is larger than the inner diameter of the knob housing 1 to ensure the tightness inside the knob housing 1. The surface of the knob 2, which is used for being connected with the knob shell 1, extends towards the inner cavity of the knob shell 1 and is provided with a knob connecting piece 5 which is attached to the inner wall of the knob shell 1. The knob connecting piece 5 is a cylinder, the diameter of the knob connecting piece 5 is equal to the inner diameter of the knob shell 1, and the knob connecting piece 5 is rotatably connected with the knob shell 1.
Referring to fig. 3 and 4, the rotation shaft 3 is located in the knob case 1 and is fixedly connected with the knob connector 5. In different embodiments, the rotating shaft 3 may be connected with the knob connector 5 in different manners, but the rotating shaft 3 and the knob connector 5 may be relatively fixed, a connecting hole of the rotating shaft 3 may be formed in the knob connector 5, the connecting hole of the rotating shaft 3 is a square hole, a cross-sectional shape of a portion of the rotating shaft 3 for connecting with the knob connector 5 is matched with a shape of the connecting hole 15 of the rotating shaft, and the square connecting hole 15 of the rotating shaft is used for relatively fixing the rotating shaft 3 and the knob connector 5 in a circumferential direction. It should be noted that the rotating shaft 3 needs to extend into the explosion-proof box 11 to be connected with the stirring member 4, and therefore the length of the rotating shaft 3 should be greater than that of the knob housing 1.
Referring to fig. 3, in different embodiments, the toggle member 4 may have different structures, and the toggle member 4 includes, as an example, a mounting seat 43, a first toggle lever 41 and a second toggle lever 42. The first and second tap levers 41 and 42 are disposed on the mounting base 43 along the axial direction of the rotating shaft 3, and are connected to the mounting base 43 by bolts. It should be noted that the first and second poke rods 41 and 42 rotate synchronously with the knob 2, the adjustable poke rod 12 is located between the first and second poke rods 41 and 42, and the distance between the first and second poke rods 41 and 42 is greater than the distance between the adjustable poke rod switch-on position 121 and the adjustable poke rod switch-off position 122. The mount pad 43 is provided with the column connecting seat along the axis direction of pivot 3, and the mounting hole has been seted up to the one end that the column connecting seat is close to knob connecting piece 5, and the mounting hole is square, and square mounting hole can make pivot 3 and stir 4 circumferentially relatively fixed, and pivot 3 passes behind the mounting hole, realizes pivot 3 and stir 4 axially relatively fixed through bolted connection. The knob 2 drives the knob connecting piece 5 to rotate around the axis of the rotating shaft 3 in the knob shell 1, when the miniature circuit breaker is switched on, the adjustable shifting rod 12 is located at the adjustable shifting rod switching-on position 121 and is abutted to the first shifting rod 41, the rotating shaft 3 rotates to drive the first shifting rod 41 to rotate, and the first shifting rod 41 rotates the adjustable shifting rod 12 to the adjustable shifting rod switching-on position 122. After the miniature circuit breaker is switched on, the knob 2 is rotated to the knob switch-on position 54, the first poke rod 41 and the second poke rod 42 are also synchronously rotated, but because the distance between the first poke rod 41 and the second poke rod 42 is greater than the distance between the adjustable poke rod switch-on position 122 and the adjustable poke rod switch-on position 121, the first poke rod 41 and the second poke rod 42 do not touch the adjustable poke rod 12 at the adjustable poke rod switch-on position 122 at the moment.
The knob 2 is rotatably connected with the knob shell 1 through a knob connecting piece 5 attached to the inner wall of the knob shell 1, the knob shell 1 is located outside the explosion-proof box 11 and is in threaded connection with the explosion-proof box 11, and the sealing performance of the inner cavity of the knob shell 1 and the inner cavity of the explosion-proof box 11 is guaranteed. The rotating shaft 3 is connected with the knob connecting piece 5, the rotating shaft 3 is arranged in the knob shell 1, and the stirring piece 4 is arranged in the explosion-proof box 11, so that the rotating process of the rotating shaft 3 for driving the stirring piece 4 to rotate is in a closed space, and dust is prevented from entering the explosion-proof box 11 when the miniature circuit breaker is switched on.
In order to further ensure the tightness of the inner cavity of the knob shell 1. The inside sealing member 6 that is provided with the laminating of 1 inner wall of knob shell 1, sealing member 6 are the cylinder, and sealing member 6 is worn to locate by pivot 3, and sealing member 6 just rotates with the coaxial setting of pivot 3 and is connected.
Referring to fig. 3, in order to accurately complete the closing of the micro breaker. Spacing breach 61 has been seted up to sealing member 6, and knob connecting piece 5 is provided with spacing lug 52 around pivot 3, and spacing lug 52 sets up in spacing breach 61, and the first central angle scope that spacing lug 52 produced for the axis of pivot 3 is less than the second central angle scope that spacing breach 61 produced for the axis of pivot 3. The limiting projection 52 rotates around the axis of the rotating shaft 3, and the limiting projection 52 forms a limiting path at the limiting notch 61, the starting point of the limiting path corresponds to the knob switch-on position 53, and the end point of the limiting path corresponds to the knob switch-off position 54. The rotation of the limit projection 52 in the limit notch 61 can limit the rotation range of the knob 2, the knob connector 5, the rotating shaft 3 and the toggle piece 4. When the limiting protrusion 52 rotates from the knob switch-on position 54 to the knob switch-on position 53, the toggle element 4 can rotate the adjustable shift lever 12 from the adjustable shift lever switch-on position 121 to the adjustable shift lever switch-on position 122, so as to close the miniature circuit breaker (refer to fig. 5 and 6).
With continued reference to fig. 3 and 4, to enable rapid closing of the miniature circuit breaker. Specifically, but not by way of limitation, a structure is provided, in which a sealing member closing position and a sealing member opening position are provided on a surface of the sealing member 6 where the limiting notch 61 is provided, the sealing member closing position and the sealing member opening position are distributed at intervals on the same circumference formed around the axis of the sealing member 6, and a third central angle generated by the sealing member closing position and the sealing member opening position with respect to the axis of the rotating shaft 3 is equal to a fourth central angle generated by the knob closing position 53 and the knob opening position 54 with respect to the rotating shaft 3. Seted up on the sealing member 6 position of opening floodgate and opened floodgate hole 62, the face that knob connecting piece 5 was provided with spacing lug 52 link up and has seted up spacing hole 51, wears to be equipped with along with knob connecting piece 5 synchronous pivoted gag lever post 8 in the spacing hole 51, gag lever post 8 and spacing hole 51 sliding connection, and gag lever post 8's rotation route is through opening floodgate hole 62. Through such setting, rotate knob 2, knob 2 drives knob connecting piece 5 and rotates, and knob connecting piece 5 drives spacing lug 52 and rotates, and when spacing lug 52 rotated to knob position 54 that opens the floodgate from knob position 53, spacing hole 51 landing was to opening the floodgate hole 62.
Continuing to refer to fig. 3 and 4, the rotating shaft 3 is sleeved with a torsion spring 7, one end of the torsion spring 7 is connected with the surface of the sealing element 6 far away from the limiting notch 61, and the other end of the torsion spring is connected with the rotating shaft 3. So set up, when miniature circuit breaker is in the combined floodgate state, knob 2 drive knob connecting piece 5 rotates, and knob connecting piece 5 drives spacing lug 52 and rotates to knob position 54 that opens the floodgate, and pivot 3 is also taking place to rotate simultaneously, and torsional spring 7 tightens up the energy storage along with pivot 3 rotates, and meanwhile gag lever post 8 landing to opening the floodgate hole 62, and gag lever post 8 has restricted torsional spring 7 this moment and has driven pivot 3 to rotate in order to open the floodgate position 53 with spacing lug 52 by knob by the rotation of knob position 54 that opens the floodgate. When the miniature circuit breaker is in an open state (refer to fig. 6) and needs to be switched on, the limiting rod 8 is taken out of the open hole 62, the torsion spring 7 releases energy at the moment, the rotating shaft 3 is driven to rotate, the band-pass knob connecting piece 5 and the poking piece 4 are rotated simultaneously, the knob connecting piece 5 drives the limiting projection 52 and the knob 2 to rotate from the knob open position 54 to the knob switch-on position 53, and the poking piece 4 drives the adjustable poking rod 12 to rotate from the adjustable poking rod switch-on position 121 to the adjustable poking rod switch-on position 122, so that the miniature circuit breaker is switched on (refer to fig. 5 and 6). After the miniature circuit breaker is switched on, the knob 2 is rotated again to drive the knob connecting piece 5, the limiting lug 52, the rotating shaft 3 and the stirring piece 4 to rotate simultaneously, so that the limiting lug 52 is located at the knob switching-on position 54, the limiting rod 8 slides into the switching-on hole 62 again, and the torsion spring 7 tightens up the stored energy again along with the rotation of the rotating shaft 3.
Referring to fig. 4, in order to further improve the operation convenience of the explosion-proof knob, specifically but not limitingly, a reset structure of the limiting rod 8 is provided, a spring connecting block 81 is formed by the outer wall of one end of the limiting rod 8, which is far away from the sealing element 6, protruding outwards along the circumferential direction of the limiting rod 8, a reset spring 9 is sleeved on the limiting rod 8, one end of the reset spring 9 abuts against the surface of the knob connecting piece 5, which is far away from the limiting convex block 52, the other end of the reset spring abuts against the spring connecting block 81, a fixing button 13 is arranged on the spring connecting block 81, and the fixing button 13 is used for pressing the limiting rod 8 into the opening hole 62 and fixing the opening hole 62. The outer diameter of the spring connecting block 81 is greater than the inner diameter of the limiting hole 51. When the knob 2 rotates to the knob opening position 54, the fixing button 13 is pressed, the fixing button 13 locks the fixing button 13 after the limiting rod 8 is pressed into the opening hole 62, the return spring 9 is compressed at the moment, and the torsion spring 7 contracts to store energy. When the miniature circuit breaker is required to be switched on when the circuit is broken, the fixed button 13 is unlocked, the reset spring 9 pushes the limit rod 8 out of the switching-on hole 62, the torsion spring 7 releases energy to drive the rotating shaft 3 to rotate, and the rotating shaft 3 drives the poking rod piece to poke the adjustable poking rod 12 from the adjustable poking rod switching-on position 121 to the adjustable poking rod switching-on position 122, so that the miniature circuit breaker is switched on.
In various embodiments, the fixed button 13 may be connected to the limiting rod 8 in various ways, and specifically, but not limited to, a connection way is provided, the fixed button 13 is a rotating plate 10, the holding protrusion 22 of the knob 2 is formed with a rotating plate mounting slot 221 adapted to the rotating plate 10, and the rotating plate 10 is disposed in the rotating plate mounting slot 221 and hinged to a sidewall of the rotating plate mounting slot 221. Spacing hole 51 that sets up on the knob connecting piece 5 extends towards the direction of knob 2 to link up disc seat 21 and holding lug 22, revolve board mounting groove 221 and spacing hole 51 intercommunication, revolve board 10 butt gag lever post 8, revolve the lateral wall of board mounting groove 221 and seted up fixed orifices 14. When the rotating plate 10 is pressed, the rotating plate 10 presses the limit rod 8 into the opening hole 62, a latch or a padlock may be inserted into the fixing hole 14 to restrict the rotation of the rotating plate 10, so as to fix the limit rod 8 in the opening hole 62.
The implementation principle of the embodiment of the application is as follows: when the miniature circuit breaker is in a closed state, the connection state of the toggle element 4 and the adjustable toggle rod 12 is shown in fig. 2. When miniature circuit breaker is in the combined floodgate state, explosion-proof knob need set up to 7 energy storage states of torsional spring, rotate knob 2, knob 2 drive knob connecting piece 5 rotates, knob connecting piece 5 drive spacing lug 52 rotates to knob position of opening 54, pivot 3 also takes place to rotate simultaneously, torsional spring 7 tightens up the energy storage along with pivot 3 rotates, meanwhile gag lever post 8 is pressed by fixed button 13 and is got into opening 62 in the floodgate hole, and be fixed in opening 62 in the floodgate hole, gag lever post 8 has restricted torsional spring 7 this moment and has driven pivot 3 to rotate in order to rotate spacing lug 52 to knob position of opening 53 by knob position of opening 54.
When the miniature circuit breaker is in an open state and needs to be switched on, the connection state of the toggle element 4 and the adjustable toggle element 12 is as shown in fig. 5, at this moment, the limitation of the fixed knob 2 on the limiting rod 8 needs to be cancelled, the limiting rod 8 is ejected out of the open hole 62 by the reset spring 9, the torsion spring 7 releases energy, the rotating shaft 3 is driven to rotate, the band-pass knob connecting element 5 and the toggle element 4 rotate simultaneously, the knob connecting element 5 drives the limiting projection 52 and the knob 2 to rotate to the knob switch-on position 53 from the knob switch-on position 54, and the toggle element 4 drives the adjustable toggle element 12 to rotate to the switch-on position from the switch-off position, so that the miniature circuit breaker is switched on (as shown in fig. 6).
After the miniature circuit breaker is switched on, the knob 2 is rotated again to drive the knob connecting piece 5, the limiting lug 52, the rotating shaft 3 and the poking piece 4 to rotate simultaneously, so that the limiting lug 52 is located at the knob switching-on position 54, the limiting rod 8 is fixed in the switching-on hole 62, the torsion spring 7 tightens up the stored energy again along with the rotation of the rotating shaft 3, and the connection state of the explosion-proof knob and the adjustable poking rod 12 is shown in fig. 2.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (7)
1. The utility model provides an explosion-proof knob that miniature circuit breaker to explosion-proof incasement carries out combined floodgate which characterized in that: including knob shell (1), knob (2), pivot (3) and stirring piece (4), knob shell (1) is connected on explosion-proof case (11) and is located outside explosion-proof case (11), knob (2) set up in on knob shell (1), knob (2) be used for with the face that knob shell (1) is connected faces towards the inner chamber of knob shell (1) extends to be formed with knob connecting piece (5) of knob shell (1) inner wall laminating, pivot (3) are located in knob shell (1) and with knob connecting piece (5) are in pivot (3) fixed connection, pivot (3) are kept away from the one end of knob connecting piece (5) extend into explosion-proof case (11) in with stir piece (4) and connect, knob (2) drive knob connecting piece (5) are in around in knob shell (1) the axis of pivot (3) rotates, stir piece (4) with knob connecting piece (5) rotate and are formed with and rotate the route, and set up in the adjustable floodgate position (122) and set up in the driving lever (121) adjustable floodgate position.
2. An explosion-proof knob for closing a miniature circuit breaker inside an explosion-proof case according to claim 1, wherein: knob shell (1) inside be provided with sealing member (6) of knob shell (1) inner wall laminating, pivot (3) are passed sealing member (6), and with sealing member (6) rotate to be connected, spacing breach (61) have been seted up in sealing member (6), knob connecting piece (5) center on pivot (3) are provided with spacing lug (52), spacing lug (52) set up in spacing breach (61), spacing lug (52) for the first central angle scope that the axis of pivot (3) produced is less than spacing breach (61) for the second central angle scope that the axis of pivot (3) produced.
3. An explosion-proof knob for closing a miniature circuit breaker inside an explosion-proof case according to claim 2, wherein: the limiting projection (52) rotates around the axis of the rotating shaft (3), a limiting path is formed by the limiting projection (52) in the limiting notch (61), the starting point of the limiting path corresponds to a knob switching-on position (53), and the end point of the limiting path corresponds to a knob switching-off position (54).
4. An explosion-proof knob for closing a miniature circuit breaker inside an explosion-proof case according to claim 3, wherein: the sealing member (6) is a cylinder, the sealing member (6) and the rotating shaft (3) are coaxially arranged, the sealing member (6) is arranged on the surface of the limiting notch (61) and is provided with a sealing member (6) switching-on position and a sealing member (6) switching-off position, a switching-on position hole of the sealing member (6) and a switching-off position hole of the sealing member (6) are distributed on the same circumference formed by the axis of the sealing member (6) at intervals, the sealing member (6) switching-on position and the sealing member (6) switching-off position are opposite to a third central angle generated by the axis of the rotating shaft (3) and a knob switching-on position (53) and a knob switching-off position (54) are opposite to a fourth central angle generated by the rotating shaft (3), a switching-off hole (62) is arranged on the switching-off position of the sealing member (6), the surface of the knob connecting piece (5) provided with a limiting lug (52) is communicated and is provided with a limiting hole (51), a limiting rod (8) synchronously rotates along with the knob connecting piece (5) in the limiting hole (8), and the limiting rod (8) is connected with the limiting hole (51) in a sliding way, and the limiting rod (8) passes through the limiting hole (62).
5. An explosion-proof knob for closing a miniature circuit breaker inside an explosion-proof case according to claim 4, wherein: keep away from gag lever post (8) the outer wall of the one end of sealing member (6) becomes along the circumference evagination of gag lever post (8) has spring coupling block (81), the cover is equipped with reset spring (9) on gag lever post (8), reset spring (9) one end with knob connecting piece (5) is kept away from the face butt of spacing lug (52), the other end with spring coupling block (81) butt, be provided with fixed button (13) on spring coupling block (81), fixed button (13) be used for with gag lever post (8) is pressed into in opening floodgate hole (62) and with it is fixed to open floodgate hole (62).
6. An explosion-proof knob for closing a miniature circuit breaker inside an explosion-proof case according to claim 2, wherein: the cover is equipped with torsional spring (7) on pivot (3), torsional spring (7) one end with sealing member (6) are kept away from the face of spacing breach (61) is connected, the other end with pivot (3) are connected.
7. An explosion-proof knob for closing a miniature circuit breaker inside an explosion-proof case according to claim 1, wherein: the poking piece (4) is provided with a first poking rod (41) and a second poking rod (42), the first poking rod (41) and the second poking rod (42) rotate synchronously with the knob (2), the adjustable poking rod (12) is located between the first poking rod (41) and the second poking rod (42), the distance between the first poking rod (41) and the second poking rod (42) is larger than the distance between the adjustable poking rod opening position (121) and the adjustable poking rod closing position (122), and the adjustable poking rod (12) abuts against the first poking rod (41) when located at the adjustable poking rod opening position (121).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211676400.5A CN115910715B (en) | 2022-12-26 | 2022-12-26 | Explosion-proof knob for closing miniature circuit breaker in explosion-proof box |
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|---|---|---|---|
| CN202211676400.5A CN115910715B (en) | 2022-12-26 | 2022-12-26 | Explosion-proof knob for closing miniature circuit breaker in explosion-proof box |
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| CN115910715B CN115910715B (en) | 2023-11-07 |
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| CN202211676400.5A Active CN115910715B (en) | 2022-12-26 | 2022-12-26 | Explosion-proof knob for closing miniature circuit breaker in explosion-proof box |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN115910715B (en) | 2023-11-07 |
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