CN1067486C - Circuit-breaking switch - Google Patents
Circuit-breaking switch Download PDFInfo
- Publication number
- CN1067486C CN1067486C CN98118337A CN98118337A CN1067486C CN 1067486 C CN1067486 C CN 1067486C CN 98118337 A CN98118337 A CN 98118337A CN 98118337 A CN98118337 A CN 98118337A CN 1067486 C CN1067486 C CN 1067486C
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- China
- Prior art keywords
- contact shoe
- circuit
- breaker
- movable contact
- contact
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
- H01H73/12—Means for indicating condition of the switch
Abstract
A circuit breaker provided with a display unit in which an opening condition of a movable contact and a fixed contact can be securely determined on the outer side of the circuit breaker. In a circuit breaker provided with an insulation casing comprising a cover 1 and a base 2, a handle 3 disposed inside the insulation casing to be operated for ON/OFF from the outer side, a fixed contact 4 installed on the base 2 of the insulation casing, a movable contact 7 disposed to face the fixed contact 4 to get in contact with/apart from it, and a drive member 10 to drive the movable contact 7, it is provided with recessed parts 1a, 1c formed on the surface side of the cover 1, and a display unit 30, interlocked with drive members, contained in the recessed parts 1a, 1c to display a contact condition of the movable contact and the fixed contact.
Description
The present invention relates to can be from the outside improvement open and-shut mode, the circuit-breaker display unit of clear and definite judging circuit circuit breaker main contact.
Figure 16 is the side sectional view of the available circuit circuit breaker shown in the open communique of for example Japanese patent of invention 1989 No. 60442, and the closed circuit state of circuit-breaker is shown.Figure 17 shows that movable contact shoe is assembled in the stereogram of state in the push pedal of circuit-breaker shown in Figure 16.Figure 18 is the stereoscopic figure of circuit-breaker shown in Figure 16.Figure 19 shows that the side sectional view when circuit-breaker among Figure 16 is in open-circuit condition.Figure 20 shows that the side sectional view when circuit-breaker among Figure 16 is in tripped condition.Side sectional view when being the deposited state of circuit-breaker generation contact among Figure 16 shown in Figure 21.
In Figure 16-Figure 21,1 is cover cap, and 2 is base, is synthetic resin and makes, the insulation basket of forming circuit circuit breaker.3 is handle, carries out the switching of circuit-breaker contact from the outside.3a is the display part that is formed on the handle 3, shows the mark or the literal that show direction of operating, for example " ON " (seeing shown in Figure 180).4 for being fixed in the fixedly contact shoe of base 2, twists closing on the one end to connect the terminal screw 5 that electric wire is used, and fixing fixed contact 6 on the other end.7 is movable contact shoe, fixing on the one end with fixed contact 6 from, the travelling contact 8 that closes.
9 pushing springs are installed between the recess 2a and movable contact shoe 7 of base 2, movable contact shoe 7 is applied leave the fixedly active force of contact shoe 4 directions.10 push pedals for insulating material formation, as shown in figure 17, be formed with the recess 10a that is roughly the コ font that movable contact shoe 7 is installed and prevent the come off protuberance 10b of usefulness of movable contact shoe 7 in its bottom, can be in being located at the groove 2b of base 2, slide from, the direction of closing along travelling contact 8 relative fixed contacts 6.
11 is connecting rod, and prop up on handle 3 by axle 12 pivots the one end, and the other end can combine to free clutch with the upper surface 10c of push pedal 10 by Roller Shaft 13.14 is cross bar, and one end pivot props up in the rotating shaft 15 of handle 3, and cross bar top ends 14a and Roller Shaft 13 against.16 is swing span, and its approximate centre part ground free to rotate pivot props up on axle 17, an end and above-mentioned cross bar 14 against, fixing trip(ping) bar 18 on the other end.In addition, form switching mechanism by handle 3, push pedal 10, connecting rod 11, axle 12, Roller Shaft 13 and cross bar 14.19 is electromagnet apparatus, has movable iron 20.Under state shown in Figure 16, the display part 3a of handle 3 shows " ON ".
In aforesaid available circuit circuit breaker, if be among Figure 16 of closed circuit state at contact, make handle 3 swing to open-circuit position (being tilted to the right), the linkage that is made of handle 3, connecting rod 11, axle 12 and Roller Shaft 13 promptly bends to the ㄑ font, push pedal 10 since the active force of pushing spring 9 and with movable contact shoe 7 to the direction of leaving contact be among Figure 19 upward to lifting, travelling contact 8 leaves fixed contact 6, is open-circuit condition shown in Figure 19.At this state, the display part 3a of handle 3 shows " OFF ".
Under above-mentioned closed circuit state shown in Figure 16, in case flow through the overcurrent of abnormal current etc. in the circuit, electromagnet portion 19 is fixed movable iron 20 unshakable in one's determination 21 to attract, the action movie 20a of movable iron 20 plays trip(ping) bar 18, swing span 16 is counterclockwise rotated for middle mind-set with axle 17, the disengagement that combines of swing span 16 and cross bar 14, Roller Shaft 13 is from the downward landing of upper surface 10c of push pedal 10.Push pedal 10 is upwards lifted to the direction of leaving contact with movable contact shoe 7 owing to push the active force of spring 9,, travelling contact 8 leaves fixed contact 6, is tripped condition shown in Figure 20, finishes automatically and operates a switch.Under this state, the display part 3a of handle 3 show " ON " and " OFF " respectively half.
In aforesaid available circuit circuit breaker, travelling contact 8 and fixed contact 6 are deposited to become closed circuit state because of abnormal current makes, when producing indissociable state, though as shown in figure 21, circuit-breaker can carry out a series of actions of drawing back, but travelling contact 8 and fixed contact 6 are mutually deposited, and end position is drawn back in movable contact shoe 7 and push pedal 10 no shows normally, still keeps " ON " state.But the position of handle 3 is with normally to draw back end position identical, display part 3a show " ON " and " OFF " each half, so, have the inconsistent problem of closed circuit position of display position with the travelling contact 8 of reality of handle 3.
In order to solve the problem that above-mentioned prior art exists, the objective of the invention is to, obtain a kind of circuit-breaker with following display unit, this display unit can be from the travelling contact of the outside reliable judging circuit circuit breaker of circuit-breaker and the open and-shut mode of fixed contact.
First kind of circuit-breaker of the present invention, has the insulation basket that constitutes by cover cap and base, the handle of being located at this insulation basket inside, can carrying out 0N, OFF operation from the outside, be installed in the fixedly contact shoe on the insulation basket base, relatively fixedly contact shoe is from, movable contact shoe that closes and the driver part that drives this movable contact shoe, and, be provided with the recess that is formed at described cover surfaces side and be contained in this recess and link and show the movable contact shoe and the fixing display unit of the clutch state of contact shoe with driver part.
Second kind of circuit-breaker of the present invention, has the insulation basket that constitutes by cover cap and base, the handle of being located at this insulation basket inside, can carrying out ON, OFF operation from the outside, be installed in the fixedly contact shoe on the insulation basket base, relatively fixedly contact shoe is from, the movable contact shoe that closes, the push pedal that is connected with an end of this movable contact shoe and the linkage that drives this push pedal, and, be provided with the recess that is formed at described cover surfaces side and be contained in this recess and link and show the movable contact shoe and the fixing display unit of the clutch state of contact shoe with push pedal.
The third circuit-breaker of the present invention, has the insulation basket that constitutes by cover cap and base, the handle of being located at this insulation basket inside, can carrying out ON, OFF operation from the outside, be installed in the fixedly contact shoe on the insulation basket base, relatively fixedly contact shoe is from, the movable contact shoe that closes, the cross bar that is connected with an end of this movable contact shoe and the elbow section rod mechanism that drives this cross bar, and, be provided with the recess that is formed at described cover surfaces side and be contained in this recess and link and show the movable contact shoe and the fixing display unit of the clutch state of contact shoe with cross bar.
In addition, described display unit comprises the connecting rod of an end and push pedal interlock and is connected, shows the movable contact shoe and the fixing display piece of contact shoe clutch state with this connecting rod.
And described display piece is formed by flexible sheet.
As mentioned above, first kind of circuit-breaker of the present invention, because except operating grip, fixing contact shoe, the relative fixed contact shoe from, outside movable contact shoe that closes and the driver part that drives this movable contact shoe, also be provided with the recess of the cover surfaces side that is formed at circuit-breaker and be contained in this recess and with drive described driver part and link and show the movable contact shoe and the fixing clutch state display unit of contact shoe, therefore, when making movable contact shoe owing to abnormal current and fixedly contact shoe can not separate at closed circuit state generation melting joint, can represent clearly that the melting joint has taken place contact.
In addition, second kind of circuit-breaker of the present invention, because because except operating grip, fixing contact shoe, the relative fixed contact shoe from, the movable contact shoe that closes, outside push pedal that is connected with an end of this movable contact shoe and the linkage that drives this push pedal, also be provided with the recess of the cover surfaces side that is formed at circuit-breaker and be contained in this recess and link and show the movable contact shoe and the fixing display unit of the clutch state of contact shoe with described push pedal, therefore, when making movable contact shoe owing to abnormal current and fixedly contact shoe can not separate at closed circuit state generation melting joint, can represent clearly that the melting joint has taken place contact.
In addition, the third circuit-breaker of the present invention, because except operating grip, fixing contact shoe, relatively fixedly contact shoe from, the movable contact shoe that closes, outside cross bar that is connected with an end of this movable contact shoe and the elbow section rod mechanism that drives this cross bar, also be provided with the recess that is formed at described cover surfaces side and be contained in this recess and link and show the movable contact shoe and the fixing display unit of the clutch state of contact shoe with described cross bar, therefore, when making movable contact shoe owing to abnormal current and fixedly contact shoe can not separate at closed circuit state generation melting joint, can represent clearly that the melting joint has taken place contact.
In addition, because display unit of the present invention comprises that the connecting rod of an end and push pedal interlock reaches with this connecting rod and is connected, shows the movable contact shoe and the fixing display piece of contact shoe clutch state, therefore, display unit simple in structure.
Because display piece of the present invention is formed by flexible sheet, therefore the profile that display unit needn't increase the insulation basket is set again.
Figure 1 shows that the stereoscopic figure of the circuit-breaker in the invention process form 1.
Fig. 2 is the side sectional view of the inside after the circuit-breaker local excision that illustrates in the invention process form 1.
Figure 3 shows that the exploded perspective view of the display unit major part of the circuit-breaker in the invention process form 1.
The operate condition of display unit when Fig. 4 shows circuit-breaker in the invention process form 1 and is in closed circuit state, wherein (A) is the major part vertical view, (B) is the major part side sectional view.
The operate condition of display unit when Fig. 5 shows circuit-breaker in the invention process form 1 and is in open-circuit condition, wherein (A) is the major part vertical view, (B) is the major part side sectional view.
Fig. 6 is a side sectional view inner after the circuit-breaker local excision that illustrates in the invention process form 2.
The side sectional view of major part when Fig. 7 is in open-circuit condition for the circuit-breaker among Fig. 6.
The side sectional view of major part when Fig. 8 is in tripped condition for the circuit-breaker among Fig. 6.
Stereoscopic figure when Fig. 9 is in closed circuit state for the circuit-breaker among Fig. 6.
The side sectional view of major part when Figure 10 is in closed circuit state for the circuit-breaker among Fig. 6 and display unit.
Stereoscopic figure when Figure 11 is in open-circuit condition for the circuit-breaker among Fig. 6.
The side sectional view of major part when Figure 12 is in open-circuit condition for the circuit-breaker among Fig. 6 and display unit.
The contact that Figure 13 shows that the circuit-breaker among Fig. 6 takes place when deposited, with the side sectional view of handle after the open-circuit position direction moves.
Figure 14 is the stereoscopic figure of the circuit-breaker of Figure 13.
Figure 15 is the side sectional view of the display unit major part of the circuit-breaker among Figure 13.
Figure 16 is the stereoscopic figure of available circuit circuit breaker.
Figure 17 shows that the side sectional view when circuit-breaker among Figure 16 is in closed circuit state.
Figure 18 shows that the side sectional view when circuit-breaker among Figure 16 is in open-circuit condition.
Figure 19 shows that the side sectional view when the deposited state of contact has taken place for circuit-breaker among Figure 16.
Figure 20 shows that the side sectional view when circuit-breaker among Figure 16 is in tripped condition.
Figure 21 illustrates the push pedal of available circuit circuit breaker and the stereogram of the assembled state of movable contact shoe.
Example 1 of the present invention below is described.
Fig. 1-5 shows the circuit-breaker in the invention process form 1, and Fig. 1 is stereoscopic figure, and Fig. 2 illustrates the closed circuit state of circuit-breaker for circuit-breaker local excision being illustrated inner side sectional view.Fig. 3 is the exploded perspective view of the display unit major part of circuit-breaker shown in Figure 2.The operate condition of display unit when Fig. 4 shows circuit-breaker shown in Figure 2 and is in closed circuit state, wherein (A) is the major part vertical view, (B) is the major part side sectional view.Figure 5 shows that the operate condition of the display unit when circuit-breaker among Fig. 2 is in open-circuit condition, wherein (A) is the major part vertical view, (B) is the major part side sectional view.
In Fig. 1,1 is cover cap, and 2 is base, is synthetic resin and makes, the insulation basket of forming circuit circuit breaker.3 handles of making for synthetic resin are configured in the inside of insulation basket, can carry out ON, OFF operation from the outside.3a is the display part that is formed on the handle 3, shows the mark or the literal that show direction of operating, for example " ON ".In addition, 1a shown in Figure 4 is the 1st recess that is formed at cover cap 1 face side, and 1b is for installing the shoulder of the window cover 33 narrate later, and 1c is for communicating with the 1st recess and towards cover cap 1 inner the 2nd recess that forms, in the display unit of narrating later 30 is housed.
Shown in Figure 24 for being fixed in the fixedly contact shoe of base 2, twists on the one end and closing the terminal screw (not shown) that connects electric wire and use, and fixing fixed contact 6 on the other end.7 is movable contact shoe, fixing on the one end with fixed contact 6 from, the travelling contact 8 that closes.9 are the pushing spring, are installed between the recess 2a and movable contact shoe 7 of base 2, movable contact shoe 7 is applied leave the fixedly active force of contact shoe 4 directions.
10 is the push pedal as the driver part that drives movable contact shoe 7, as shown in Figure 3, form by insulating material, be formed with the through hole 10a that is roughly the コ font that keeps movable contact shoe 7 and prevent the come off a pair of protuberance 10b of usefulness of movable contact shoe 7, one end of each movable contact shoe 7 that will be set up in parallel at the full utmost point is connected, can be in being located at the groove 2b of base 2 (seeing shown in Figure 2), be that above-below direction among Fig. 2 slides along travelling contact 8 relative fixed contacts 6 from, the direction of closing.Again, not shown in the drawings and what omitted explanation is on the central electrode that is assembled with handle 3, to be assembled with identical connecting rod, and the identical switching mechanism with existing apparatus that constitutes such as handle 3 with existing apparatus with the upper surface 10c combination of push pedal 10.
In Fig. 2-5,30 is display unit, is assembled in another adjacent with central electrode and extremely goes up.31 connecting rods that constitute for insulating material are formed with contact site 31a in the lower end, but with the 10c clutch ground, upper surface of push pedal 10 against.32 for being fixed in the display piece of connecting rod 31 upper ends, for example the flexible sheet by phosphor bronze sheet or corrosion resistant plate etc. constitutes, on display part 32a, printing or mint-mark have and show with literal " ON " or " OFF ", promptly show the movable contact shoe 7 and the fixing literal of the contact condition of contact shoe 6.
33 for the window cover on the shoulder 1b that is contained in cover cap 1, is formed with display window 33a.In addition, display part 32a is inserted in the display space 34 that is formed between the 1st recess 1a bottom surface and the window cover 33 slidably, and because of display piece 32 is a flexible sheet, so can in the also crooked display space 34 that communicates with the 2nd recess 1c, be free to slide.35 is force application spring, be inserted on the connecting rod 31, its active force make the contact site 31a of connecting rod 31 have all the time with the upper surface 10c of push pedal 10 against trend.
In the circuit-breaker that constitutes as mentioned above, the display unit 30 when Fig. 4 (A) and Fig. 4 (B) are depicted as circuit-breaker and are in " ON " state.Under " ON " state that travelling contact shown in Figure 28 contacts with fixed contact 6, shown in Fig. 4 (A), push pedal 10 all is positioned at lower position with movable contact shoe 7, the connecting rod 31 of display unit 30 since force application spring 35 and with the upper surface 10c of push pedal 10 by being pushed downwards.In addition, the display piece 32 that is fixed on the connecting rod 31 is pulled to the below too.Its result is shown in Fig. 4 (B), and the display window 33a that is located at cover cap 1 surface makes and represents that travelling contact 8 and fixed contact 6 are in " ON " of contact condition.
Fig. 5 (A) and Fig. 5 (B) are depicted as circuit-breaker and are in " OFF " state or normal " tripping operation " action display unit 30 of state afterwards.Unshownedly in the drawings be that under travelling contact 8 and state after fixed contact 6 separates, shown in Fig. 5 (A), push pedal 10 is moved upward along the direction of arrow with movable contact shoe 7.At this moment, the connecting rod 31 of display unit 30 owing to push pedal 10 overcome force application spring 35 by on lift to the top, display piece 32 is slided among display space 34, and shown in Fig. 5 (B), display window 33a demonstrates " OFF " under travelling contact 8 and fixed contact 6 released states.
In addition, Figure 1 shows that the stereogram of " tripping operation " state when causing that because of abnormal current etc. contact is deposited.When causing that owing to abnormal current contact is deposited, with illustrated in the action specification of above-mentioned existing apparatus the same, the handle 3 that opening and closing operations is used is positioned at the position of representing " tripping operation " state, but because movable contact shoe 8 still is and fixed contact 6 state of contact, so push pedal 10 also is positioned at the below, the display window 33a of display unit 30 shows " 0N ".
If adopt this example 1, form recess 1a, 1c in the cover surfaces side, packing in this recess 1a, 1c links with driver part shows the movable contact shoe and the fixing display unit of the clutch state of contact shoe, and be provided with can be from the outside display window 33a that confirms its displaying contents of cover cap 1, so, even the situation that generation can't separate travelling contact 8 and fixed contact 6 deposited one-tenth closed circuit state because of abnormal current, in fact the display window 33a of display unit 30 demonstrates also that travelling contact 8 is in closed circuit state, and it is deposited to show that clearly contact has taken place.
In addition, display unit 30 by with the connecting rod 31 of push pedal 10 interlock and be connected with this connecting rod 31 display piece 32 constitute, so the formation of display unit 30 is simple.
In addition, because display piece 32 is made of the flexible thin plate of tool, so needn't make the profile of insulation basket just can constitute display unit too greatly.
Example 2 of the present invention below is described.Figure 6 shows that the side sectional view of the inside after the circuit-breaker local excision of the invention process form 2, be depicted as closed circuit state.Figure 7 shows that the major part side sectional view when circuit-breaker among Fig. 6 is in open-circuit condition.Major part side sectional view when Fig. 8 is in tripped condition for the circuit-breaker among Fig. 6.Stereogram when Fig. 9 is in closed circuit state for the circuit-breaker among Fig. 6.Major part side sectional view when Figure 10 is in closed circuit state for the circuit-breaker among Fig. 6 and display unit.
In the drawings, 40 is cover cap, and 41 is base, makes by synthetic resin.42 is the insulation basket that above-mentioned cover cap 40 and base 41 constitute, and 43 for being fixed in the fixedly contact shoe of base 41, has fixed contact 43a.44 for being provided with the movable contact shoe of the travelling contact 44a relative with this fixed contact 43a, supported by pivot backing pin shaft 45 free to rotately.46 is as the cross bar of the drive member that drives movable contact shoe 44, is formed by insulant, and an end of each movable contact shoe 44 that will be set up in parallel along the full utmost point is connected.
47 for being installed between movable contact shoe 44 and the cross bar 46, movable contact shoe 44 being applied all the time towards the crimp spring of fixed contact 43a directive effect power.48 is flexible conductor, and an end is connected with movable contact shoe 44, and the other end is connected with the device of operating a switch (not shown).49 for eliminating the arc-extinction device that the electric arc that produces between two contact 43a, the 44a is used.
52 for propping up the movable contact shoe side connecting rod (hereinafter referred to as lower link) on cross bar 46 by axle 53 ground free to rotate pivots, 54 for to prop up in the other end of lower link 52 by axle 56,57 one end ground free to rotate pivots respectively, and its other end ground free to rotate pivot props up the handle side connecting rod (hereinafter referred to as upper links) in swing span 55.58 for being made of lower link 52, upper links 54 and axle 56 and axle 56 becomes the elbow section rod mechanism of ancon.59 is handle arm, is rotating fulcrum with one end 59b, relatively elbow section rod mechanism can be in certain relevant position freely to rotate pivot prop up on not shown frame.
60 for the one end by spring hook pin 61 be erected on the handle arm 59, the other end is set up in the toggle spring of axle on 56.62 are handle that can operate from cover cap 40 outsides, synthetic resin formation, with handle arm 59 interlocks.63 is hooking part, has hooking part holding section 63a that engages with swing span 55 and the recess 63b that embeds hooking part bolster 64, combine with the device of operating a switch (not shown), and be that the center rotates with hooking part bolster 64.65 for pivot props up swing span bolster on not shown frame, and 66 is the latch of upper links 54 and movable contact shoe 44.
Then explanation action.Be among Fig. 7 of open-circuit condition at contact, under the state that swing span 55 is blocked by hooking part 63, if make handle 62 swing to closed circuit position (left bank), then elbow section rod mechanism 58 elongations, travelling contact 44a contacts with fixed contact 43a, becomes closed circuit state shown in Figure 6.Yet, if make handle 62 swing to open-circuit position (right bank), in case then the axis of toggle spring 60 is crossed the position (dead point) of connecting axle 56 and axle 57, elbow section rod mechanism 58 is promptly crooked, lower link 52 is upwards sling, travelling contact 44a leaves fixed contact 43a, is open-circuit condition shown in Figure 7.
On the other hand, if under closed circuit state shown in Figure 6, flow through overcurrent in the circuit, the device (not shown) of operating a switch promptly moves, swing span 55 is removed (with reference to Fig. 8) with engaging promptly of hooking part 63, is the center with swing span bolster 65, and swing span 55 is to counterclockwise rotating.Therefore, the tie point of swing span 55 and upper links 54 is the position that the point of axle 57 is promptly crossed toggle spring 60, so, the spring force of toggle spring 60 makes elbow section rod mechanism 58 bendings, and make the interlock of each utmost point by cross bar 46, the full utmost point together, travelling contact 44a leaves fixed contact 43a, is tripped condition as shown in Figure 8.
In Fig. 9-Figure 12,30-35 is identical with above-mentioned example 1, omits explanation to it at this.31b is the contact site that is formed at connecting rod 31 lower ends, but with cross bar 46 clutches ground against, the upper surface 46a and the 46b of cross bar 46 make the sphere that is easy to move.40a is the 1st recess that is formed at cover cap 40 face side, and 40b is for installing the shoulder of back with the window cover 33 of narration, 40c for communicate with the 1st recess 40a and to cover cap 40 inner form the 2nd recess, display unit 30 is housed in the same with example 1.Again, display unit 30 is assembled in other utmost point adjacent with central electrode.
Under circuit-breaker is in closed circuit state, as shown in figure 10, because travelling contact 44a contacts with fixed contact 43a, so the upper surface 46a of the contact site 31b of display unit 30 and cross bar 46 against, so through connecting rod 31, display piece 32 is slided in display space 34, as shown in Figure 9, show " ON " at display window 33a.At this moment, handle 62 is tilted to the left, and the display part 62a of handle 62 also shows " ON ".
In addition, under circuit-breaker is in open-circuit condition, as shown in figure 12, because travelling contact 44a leaves fixed contact 43a, so the contact site 31b of display unit 30 and the inclined-plane 46b of cross bar 46 against, so by connecting rod 31, display piece 32 is slided in display space 34 and is pulled down, as shown in figure 11, display window 33a shows " OFF ".At this moment, handle 62 is tilted to the right, and the display part 62a of handle 62 also shows " OFF ".
In addition, circuit flow is crossed overcurrent and is made the device of operating a switch (not shown) action, when circuit-breaker is in tripped condition, the position of handle 62 shown in the double dot dash line among Figure 11 and Figure 12, show " ON " reach " OFF " respectively half.
But, under above-mentioned tripped condition, because with shown in Figure 12 the same, travelling contact 44a has left fixed contact 43a, thus the inclined-plane 46b of the contact site 31b of display unit 30 and cross bar 46 against, so, by connecting rod 31, display piece 32 is slided in display space 34 by downward drawing, and display window 33a shows " OFF " as shown in figure 11.
Figure 13 shows that,, under swing span 55 and the undissolved state of engaging of hooking part 63, produce deposited phenomenon, the situation that travelling contact 44a can't leave between travelling contact 44a and the fixed contact 43a for example at the big electric current of the dirty extra pulse shape of closed circuit state.Under this state, the position that elbow section rod mechanism 58 keeps closed circuit state, as shown in figure 13, if handle 62 is rotated in the counterclockwise direction to the open circuit side because of Maintenance and Repair must make it be open-circuit condition, toggle spring 60 promptly extends, handle arm 59 also to counterclockwise rotating, can move it to the open-circuit position direction.
Figure 14 takes place to make handle 62 when the OFF direction moves, the operate condition of display unit 30 under the deposited state with Figure 15 shows that at travelling contact 44a and fixed contact 43a.At this moment, the position of handle 62 is tilted to the right, the display part 62a of handle 62 shows " OFF ", but because travelling contact 44a is deposited on the fixed contact 43a, thus as shown in figure 15, the contact site 31b of display unit 30 and the upper surface 46a of cross bar 46 against, so by connecting rod 31, display piece 32 is slided in display space 34, and display window 33a is shown as " ON " as shown in figure 14.At this moment, handle 62 is tilted to the left, and the display part 62a of handle 62 also is shown as " ON ".
If adopt this example 2, for the circuit-breaker of toggle bindiny mechanism as switching mechanism, connecting rod 31b by making display unit 30 and cross bar 46 against, also can obtain the effect identical with example 1.
In addition, in above-mentioned example 1 or example 2, display unit 30 and push pedal 10 or cross bar 46 interlocks, but display unit 30 and movable contact shoe 7 or 44 are directly linked.
The present invention is because consist of as mentioned above, so can receive effect as described below.
If adopt circuit-breaker of the present invention, because be provided with the recess that is formed at the cover surfaces side, and dress In this recess and with driver part, link to show movable contact shoe and the fixing clutch state of contact shoe Display unit, so, make travelling contact and fixed contact in closed circuit state even taken place because of abnormal current Lower deposited and the state that can't separate also can clearly demonstrate the deposited of contact.
In addition, if adopt circuit-breaker of the present invention, because be provided with the recess that is formed at the cover surfaces side, And be contained in this recess and link to show movable contact shoe and the fixing clutch state of contact shoe with push pedal Display unit, so, make travelling contact and fixed contact at closed circuit shape even taken place because of abnormal current Deposited and the state that can't separate also can clearly demonstrate the deposited of contact under the attitude.
In addition, if adopt circuit-breaker of the present invention, because be provided with the recess that is formed at the cover surfaces side, And be contained in this recess and link to show movable contact shoe and the fixing clutch state of contact shoe with cross bar Display unit, so, make travelling contact and fixed contact at closed circuit shape even taken place because of abnormal current Deposited and the state that can't separate also can clearly demonstrate the deposited of contact under the attitude.
In addition, if adopt circuit-breaker of the present invention, because use connecting rod and and this company that links with push pedal Extension bar connect to show movable contact shoe and fixedly the demonstration sheet of the clutch state of contact shoe consist of and show dress Put, so, display unit simple in structure.
Moreover, if adopt circuit-breaker of the present invention, because with there being flexible thin slice to make the demonstration sheet, therefore, needn't excessively increase the profile of insulation basket, can consist of display unit
Claims (6)
1. circuit-breaker, has the insulation basket that constitutes by cover cap and base, the handle of being located at this insulation basket inside, can carrying out ON, OFF operation from the outside, be installed in the fixedly contact shoe on the described base of described insulation basket, relatively fixedly contact shoe is from, movable contact shoe that closes and the driver part that drives this movable contact shoe, it is characterized in that, also be provided with the recess that is formed at described cover surfaces side and be contained in this recess and link and show the movable contact shoe and the fixing display unit of the clutch state of contact shoe with described driver part.
2. circuit-breaker, has the insulation basket that constitutes by cover cap and base, the handle of being located at this insulation basket inside, can carrying out ON, OFF operation from the outside, be installed in the fixedly contact shoe on the insulation basket base, relatively fixedly contact shoe is from, the movable contact shoe that closes, the push pedal that is connected with an end of this movable contact shoe and the linkage that drives this push pedal, it is characterized in that, also be provided with the recess that is formed at described cover surfaces side and be contained in this recess and link and show the movable contact shoe and the fixing display unit of the clutch state of contact shoe with described push pedal.
3. circuit-breaker, has the insulation basket that constitutes by cover cap and base, be located at this insulation basket inside, can carry out ON from the outside, the handle of OFF operation, be installed in the fixedly contact shoe on the insulation basket base, relatively fixedly contact shoe from, the movable contact shoe that closes, cross bar that is connected with an end of this movable contact shoe and the elbow section rod mechanism that drives this cross bar, it is characterized in that, be provided with the recess that is formed at described cover surfaces side and be contained in this recess and link and show the movable contact shoe and the fixing display unit of the clutch state of contact shoe with described cross bar.
4. according to each the described circuit-breaker among the claim 1-3, it is characterized in that described display unit comprises the connecting rod of an end and push pedal interlock and is connected, shows the movable contact shoe and the fixing display piece of contact shoe clutch state with this connecting rod.
5. according to each the described circuit-breaker among the claim 1-3, it is characterized in that described display piece is formed by flexible thin sheet.
6. circuit-breaker according to claim 4 is characterized in that described display piece is formed by flexible thin sheet.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP223407/1997 | 1997-08-20 | ||
| JP9223407A JPH1167047A (en) | 1997-08-20 | 1997-08-20 | Circuit breaker |
| JP223407/97 | 1997-08-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1208942A CN1208942A (en) | 1999-02-24 |
| CN1067486C true CN1067486C (en) | 2001-06-20 |
Family
ID=16797668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98118337A Expired - Fee Related CN1067486C (en) | 1997-08-20 | 1998-08-11 | Circuit-breaking switch |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPH1167047A (en) |
| KR (1) | KR19990023140A (en) |
| CN (1) | CN1067486C (en) |
| ID (1) | ID20729A (en) |
| TW (1) | TW368670B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103077863B (en) * | 2011-10-26 | 2015-01-28 | 乐星产电(无锡)有限公司 | Miniature circuit breaker |
| CN106450808A (en) * | 2016-09-09 | 2017-02-22 | 新疆八钢铁股份有限公司 | Rapid terminal |
| KR102364731B1 (en) * | 2017-03-16 | 2022-02-18 | 엘에스일렉트릭(주) | Circuit breaker |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1060442A (en) * | 1996-08-14 | 1998-03-03 | Chisso Corp | Liquid crystal composition and liquid crystal display element |
-
1997
- 1997-08-20 JP JP9223407A patent/JPH1167047A/en active Pending
-
1998
- 1998-04-09 ID IDP980539A patent/ID20729A/en unknown
- 1998-04-30 TW TW087106659A patent/TW368670B/en active
- 1998-05-23 KR KR1019980018657A patent/KR19990023140A/en not_active Application Discontinuation
- 1998-08-11 CN CN98118337A patent/CN1067486C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1060442A (en) * | 1996-08-14 | 1998-03-03 | Chisso Corp | Liquid crystal composition and liquid crystal display element |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH1167047A (en) | 1999-03-09 |
| TW368670B (en) | 1999-09-01 |
| CN1208942A (en) | 1999-02-24 |
| KR19990023140A (en) | 1999-03-25 |
| ID20729A (en) | 1999-02-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |