CN104704599B - Thermal overload relay - Google Patents
Thermal overload relay Download PDFInfo
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- CN104704599B CN104704599B CN201380051074.1A CN201380051074A CN104704599B CN 104704599 B CN104704599 B CN 104704599B CN 201380051074 A CN201380051074 A CN 201380051074A CN 104704599 B CN104704599 B CN 104704599B
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- Prior art keywords
- press
- release link
- release
- open
- close lid
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- 230000009471 action Effects 0.000 claims abstract description 45
- 238000006073 displacement reaction Methods 0.000 claims abstract description 7
- 238000003825 pressing Methods 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 230000000881 depressing effect Effects 0.000 abstract 1
- 210000002445 nipple Anatomy 0.000 description 35
- 210000003128 head Anatomy 0.000 description 10
- 230000033001 locomotion Effects 0.000 description 7
- 230000002093 peripheral effect Effects 0.000 description 4
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
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- 230000003321 amplification Effects 0.000 description 1
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- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- 239000007787 solid Substances 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
- H01H83/20—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition
- H01H83/22—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being imbalance of two or more currents or voltages
- H01H83/223—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being imbalance of two or more currents or voltages with bimetal elements
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Abstract
A kind of thermal overload relay that can prevent from depressing release link because of the external factor in addition to homing action is provided.The main bimetal piece of configuration in casing (2), release handle, contact reversing device and operating portion, wherein, the main bimetal piece is detected to overload and conjugated when detecting overload, the release handle is driven in the displacement of the mobile device interlocked with the main bimetal piece, the contact reversing device carries out reversion action to switch over contact by the rotation of the release handle, the operating portion is operated to the release handle and the contact reversing device, the operating portion is set as making release link (43) protrude towards the outside out of described casing, the release link makes the contact reversing device return back to original state by press-in action, press-in limitation teat (7) is configured with the vicinity of the release link, the press-in limits teat and the press-in action produced by the external factor in addition to the homing action of the release link is limited.
Description
Technical field
The present invention relates to a kind of thermal overload relay of the double-throw contact when detecting overcurrent, especially, be related to from
Trip (trip) replying state to the operating portion of recoil state improvement.
Background technology
A kind of thermal overload relay for being detected and being worked as the overload current to flowing to main circuit, it is known to example
Device as described in patent document 1.
In the thermal overload relay that the patent document 1 is recorded, overleaf side is connected with electromagnetic contactor.In addition, in heat
The position at the end of keeping right in the upper surface of the overload relay and position of backrest surface is highlightedly configured with by press-in from tripping operation
Replying state to recoil state release link.
Prior art literature
Patent document
Patent document 1：Japanese Patent Laid-Open 2010-232057 publications
The content of the invention
The invention technical problem to be solved
However, in the conventional example that above-mentioned patent document 1 is recorded, the connection electromagnetism in the upper surface of thermal overload relay
The rear side of contactor protrudes and is configured with release link, and the release link returns back to recoil state by press-in from tripped condition.Cause
, there is following unsolved technical problem in this：When by distribution and be formed at electromagnetic contactor by thermal overload relay side
When external connection terminals are connected, distribution may be made to be contacted with release link because of the pulling around situation of distribution, press-in release link is without small
The heart is in reset state.
Therefore, currently invention addresses the unresolved technical problem of above-mentioned conventional example, its object is to provide one kind to prevent
The thermal overload relay of release link is pressed into because of the external cause in addition to homing action.
Solve the technical scheme that technical problem is used
In order to solve the above-mentioned technical problem, the first technical scheme of thermal overload relay of the invention be following thermal overload after
Electrical equipment：Main bimetal piece, release handle, contact reversing device and operating portion are configured in casing, wherein, above-mentioned main bimetal piece pair
Overload is detected and conjugated when detecting overload that above-mentioned release handle is driven in the mobile dress interlocked with above-mentioned main bimetal piece
The displacement put, above-mentioned contact reversing device carries out reversion by the rotation of above-mentioned release handle and acted to be switched over to contact, on
State operating portion to operate above-mentioned release handle and above-mentioned contact reversing device, aforesaid operations portion is set as making release link from above-mentioned
Protruded towards the outside in casing, the release link makes above-mentioned contact reversing device return back to original state by press-in action.In addition,
The vicinity of above-mentioned release link be configured with press-in limitation teat, the press-in limit teat to above-mentioned release link because of homing action beyond
External factor caused by press-in action limited.
In addition, in the second technical scheme of the thermal overload relay of the present invention, above-mentioned press-in limitation teat is formed at
State the rear side of the connection external connection apparatus of release link.
In addition, in the 3rd technical scheme of the thermal overload relay of the present invention, said machine casing has covering aforesaid operations
The open-close lid in portion, is formed with above-mentioned press-in limitation prominent around the inserting hole of the confession above-mentioned release link insert of above-mentioned open-close lid
Portion.
In addition, in the 4th technical scheme of the thermal overload relay of the present invention, above-mentioned release link is configured to can oneself
Press-in shape is maintained at by the hand-reset position being pressed into and by carrying out pressing rotation process from above-mentioned hand-reset position
Switched between the position that automatically resets of state, by making to be formed at the engaging recessed part of above-mentioned release link and being formed at above-mentioned opening and closing
The engaging protuberances of the inserting hole of lid engage to keep above-mentioned hand-reset position.
In addition, in the 5th technical scheme of the thermal overload relay of the present invention, said machine casing has：Housing, the housing
Store above-mentioned main bimetal piece, above-mentioned release handle, above-mentioned contact reversing device and aforesaid operations portion；And lid, the lid with
Can the mode of opening portion of inaccessible above-mentioned housing can detachably be installed on above-mentioned housing, and with making to be connected with said external
It is prominent that the connecting line that multiple connecting lines of equipment connection are protruded towards the outside is formed with above-mentioned press-in limitation by portion, in above-mentioned lid
Portion.
In addition, in the 6th technical scheme of the thermal overload relay of the present invention, above-mentioned press-in limitation teat prevent because with
The contact of the distribution of said external connection equipment connection and cause the press-in of above-mentioned release link.
Invention effect
According to the present invention, press-in limitation teat, press-in limit are configured with the vicinity of the prominent release link for being formed at casing
Teat processed is limited the press-in action to release link produced by the external factor in addition to homing action, therefore,
Reliably release link can be prevented to be pressed into because of the external factor beyond homing action, misoperation can be prevented.
Brief description of the drawings
Fig. 1 is the shape for representing to link together the thermal overload relay of electromagnetic contactor and first embodiment of the invention
The stereoscopic figure of state.
Fig. 2 is by the stereogram of the major part enlarged representation of Fig. 1 thermal overload relay.
Fig. 3 is the stereogram for representing the state after the open-close lid of Fig. 1 thermal overload relay is opened.
Fig. 4 is the stereogram for the open-close lid for representing thermal overload relay.
Fig. 5 is the sectional view on the line A-A in the state of Fig. 3 open-close lid is pulled down afterwards.
Fig. 6 is the figure for representing contact reversing device, and Fig. 6 (a) is the figure for representing original state, and Fig. 6 (b) is to represent the shape that trips
The figure of state.
Fig. 7 is the top view of state for representing to link together the electromagnetic contactor of distribution and Fig. 1.
Fig. 8 is Fig. 7 side view.
Fig. 9 be represent second embodiment of the invention with Fig. 1 identical stereoscopic figures.
Figure 10 is by the top view of the major part enlarged representation of second embodiment.
Figure 11 is the stereogram observed from rear side of the thermal overload relay of second embodiment.
Figure 12 is the stereogram of the thermal overload relay for representing second embodiment and the lid pulled down.
Figure 13 is the stereogram for the open-close lid for representing second embodiment.
Embodiment
Hereinafter, thermal overload relay (Japanese referring to the drawings to the present invention：Hot Move Xing Over Negative lotuses are after Electricity devices) it is first real
The mode of applying is illustrated.
Fig. 1 is the stereoscopic of state for representing to link together the thermal overload relay of electromagnetic contactor and the present invention
Figure.
In figure, symbol 1 is thermal overload relay, and the rear side of the thermal overload relay 1 is connected with electromagnetic contactor 50.
As shown in Figures 2 and 3, thermal overload relay 1 has the casing 2 of insulating properties, is configured with the upper surface of the casing 2
The open-close lid 4 of the either on or off of hinge part 3 of energy left part.
As shown in figure 3, the upper surface of casing 2 be provided with operating portion 45, the operating portion 45 by regulation dial plate 9 adjustment portion
9a, the release link 43 that reset operation is carried out to aftermentioned contact reversing device and contact reversing device action show and jumped manually
Lock operation window 44 is constituted.
As shown in figure 4, the inserting hole 5 inserted for release link 43 is formed with open-close lid 4, in the left end side of the inserting hole 5
It is formed with the engaging protuberances 6 for the locking that the rotation to release link 43 is limited.
In addition, it is prominent that press-in limitation is formed with the lateral margin relative with electromagnetic contactor 50 of the inserting hole 5 of open-close lid 4
Portion 7, the press-in limitation press-in produced by the external factor in addition to the homing action of release link 43 of 7 pairs of convex portion act into
Row limitation.As shown in Fig. 2 the press-in limit teat 7 by the hinder marginal part along inserting hole 5 and right side edge tabular protrusion tab
8 form.The projecting height of the protrusion tab 8 is chosen to be in the state closed open-close lid 4 and make release link 43 be protruded from inserting hole 5
Under, release link 43 will not be press-fit into the such height of reset position.
As shown in figure 5, governor motion 20 and contact reversing device 21 are configured with casing 2, wherein, above-mentioned governor motion
20 are driven in the displacement of the mobile device (shifter) 16 engaged with the free end of main bimetal piece 15, above-mentioned contact reverse engine
Structure 21 is switched over by the action of governor motion 20 to contact.
Governor motion 20 includes：Adjust connecting rod 22；Release handle 23, the release handle 23 is supported in the way of it can freely rotate
The regulation connecting rod；And temperature compensating bimetal part 24, the temperature compensating bimetal part 24 be fixed on the release handle 23 and with shifting
Dynamic device 16 engages.
Side court of the regulation connecting rod 22 by the link supporting portion 25 that is supported to release handle 23 and from link supporting portion 25
The leg 26 of lower section extension is constituted.In addition, the inwall in the lower side of casing 2 is provided with fulcrum in the way of towards protrusion in casing 2
27.In addition, by the way that the bearing hole 26a of leg 26 is inserted in the leading section after the undergauge of fulcrum 27, regulation connecting rod 22 it is overall with
Casing 2 is supported on centered on fulcrum 27 in the way of it can freely rotate.
Release handle 23 is supported on link supporting portion 25 using rotary shaft 23a in the way of it can rotate, and overleaf rivets solid
Determine the end of temperature compensating bimetal part 24.
As shown in fig. 6, contact reversing device 21 includes reversing device support 32, interlock plate 34, movable platen 35 and stretching
Helical spring 36.Reversing device support sector 32 is configured in casing 2.Interlock plate 34 is configured at the attached of reversing device support 32
Closely, and in the way of it can freely rotate fulcrum 33 is supported on, the fulcrum 33 is located at the inwall of casing 2.The top 35b of movable platen 35
It is configured to as fulcrum be freely swung using the bottom 35a abutted with reversing device support 32.Draft helical spring 36
It is located between the top 35b sides of movable platen 35 and the spring-loaded portion 32a of reversing device support 32.
In addition, the first engagement pin 39a and second is provided with the way of across the upper end of movable platen 35 on interlock plate 34
Engagement pin 39b, the first engagement pin 39a and the second engagement pin 39b make reversion action, the reply of interlock plate 34 and movable platen 35 dynamic
Work is rotated around fulcrum 33 together.In addition, in reversing device support 32 so that the state that free end extends upward is set side by side
It is equipped with normally opened contact (a contacts) side plate spring 37.The fixed contact 38a of a contacts 38 is fixed with the free end side of the leaf spring 37.Separately
Outside, the moving contact 38b for a contacts 38 being connected with fixed contact 38a is fixed with the top 35b of movable platen 35.
In addition, although not shown, but the position across the opposite side relative with a contacts 38 of interlock plate 34 with free end upward
Fang Yanshen state is configured with normally-closed contact (b contacts) side plate spring, and is configured with contact supporting plate with the state relative with the leaf spring
Plate.
As shown in amplification in Fig. 2, it is formed with the head upper surface of release link 43 for the screw for spinning reduction bar 43
The slotted eye 43a of the crosswise of the instruments such as knife insertion, and it is formed with four pillar 43b~43e.In these pillars 43b~43e
Pillar 43e upper end is formed with the locking piece 43f being projected toward the outside.
In addition, the outer peripheral face between pillar 43b and 43e be formed with arrival slotted eye 43a and with the engaging protuberances of open-close lid 4
The locking recess 43g of 6 engagings.In addition, as shown in figure 5, (leaning on axial phase relative to head in the other end of the release link 43
The end tossed about) side side face, headward gradually expanding resetting block 43h is formed with the scopes of substantially 90 degree.In addition,
Convex portion 43i is formed with the neck being formed between head and resetting block 43h.
As shown in figure 5, release link 43 is configured at the top in casing 2 in the way of being axially facing above-below direction.In addition, multiple
The returning spring (not shown) that the compression spring that position bar 43 is installed in the periphery of lower end side is constituted exerts a force upward, head slave
The upper surface of shell 2 is protruded.Herein, rotationally constrained portion 2a, 2b in casing 2 is from both sides and the reset that configures as shown in Figure 5
The convex portion 43i of bar 43 is relative.Therefore, even if the release link that the substantially the entirety of region on head to be made is protruded from the upper surface of casing 2
43 rotations, are abutted with convex portion 43i by rotationally constrained portion 2a, 2b, can also limit the rotation of release link 43.
In addition, as shown in dash-dot lines in fig. 5, being located at when by release link 43 with the substantially the entirety of region on its head in casing 2
When mode is pressed into, the resetting block 43h of release link 43 is made by being contacted with a contacts side plate spring 37 in shown in Fig. 6 (b)
The movable platen 35 of tripped condition is back to initial position (stable state).
Trip operation bar 34a is formed with the upper end of interlock plate 34.Interlock plate 34 be in original state when, can from located at
The action of the upper surface of casing 2 shows simultaneous hand trip(ping) operation window 44 (reference picture 1) towards trip operation bar 34a.In addition, energy
Make with trip operation bar 34a to engage from instruments such as the screwdrivers of action display and the insertion of hand trip(ping) operation window 44, and by even
Dynamic plate 34 makes movable platen 35 be rotated towards the direction as tripped condition.
In addition, electromagnetic contactor 50 is connected with the rear side of thermal overload relay 1.As shown in fig. 7, by will be from being formed at
Connecting line 12a~12c that such as three connecting line sleeve 11a of lid 10~11c is protruded and electromagnetic contactor 50 three companies
Connecting terminal 51a~51c electrical connections carry out the connection of the thermal overload relay 1 and electromagnetic contactor 50, wherein, lid 10 is located at warm
The rear side of overload relay 1.
Then, the action to the thermal overload relay 1 of present embodiment is illustrated.
First, to make release link 43 be in hand-reset state in the case of the action of thermal overload relay say
It is bright.
As shown in figure 3, by the way that open-close lid 4 is set into open mode, so that the adjustment portion 9a for adjusting dial plate 9 is opened, therefore,
The adjustment portion 9a of regulation dial plate 9 can be rotated using instruments such as screwdrivers, change the rotational angle of release handle 23, with to adjusting electricity
Stream is adjusted.
In addition, instrument and the trip operation bar 34a such as the screwdriver that simultaneous hand trip(ping) operation window 44 is inserted will be shown from action
Engaging, so as to which thermal overload relay to be tentatively set to hand-reset state.That is, instrument and trip operation bar 34a cards are made
Close, the interlock plate 34 of Fig. 6 (a) original state is rotated clockwise around fulcrum 33.By the rotation of the interlock plate 34 with
The second engagement pin 39b that movable platen 35 engages makes interlock plate 34 be rotated towards the direction as tripped condition, and the fixation of a contacts 38 is touched
Point 38a and moving contact 38b connections.Now, the fixed contact of b contacts (not shown) and moving contact separation.
So, if terminating regulation, the determination of hand-reset state of setting current, open-close lid 4 is closed, dial plate 9 is adjusted
Adjustment portion 9a, action display and hand trip(ping) operation window 44 be opened and closed lid 4 and cover.On the other hand, the head of release link 43 is worn
Cross in the inserting hole 5 of open-close lid 4 and protrude upward.Now, the engaging protuberances 6 of open-close lid 4 and the lock of release link 43 are formed at
Surely with recess 43g engagings, the rotation of release link 43 is locked, so that the hand-reset shape in the press-in for only allowing release link 43
State.
Therefore, under hand-reset state, it is impossible to the regulation for the setting current that dial plate 9 is implemented is adjusted and jumps manually
The operation of lock.
In addition, when the thermal overload relay of overload electric current flowing to present embodiment, as shown in figure 5, because of overload current
And heater 15a is generated heat, so that main bimetal piece 15 is bent, make movement because of the displacement of the free end of main bimetal piece 15
Device 16 towards Fig. 5 symbol the Q direction of arrow are conjugated.When the mobile device 16 using displacement is to temperature compensating bimetal part 24
When free end is pressed, the release handle 23 integrated with temperature compensating bimetal part 24 is around turn for being supported on regulation connecting rod 22
Moving axis 23a is rotated clockwise, and the draft helical spring press section 23f of release handle 23 is pressed draft helical spring 36.
In addition, when release handle 23 carries out clockwise rotation, draft helical spring press section 23f pressing force exceedes
During the acting force of the spring of draft helical spring 36, movable platen 35 carries out reversion action by fulcrum of bottom 35a.In addition, can with this
The reversion action of dynamic plate 35 together, the interlock plate 34 acted via the first engagement pin 39a by the reversion of movable platen 35 also around
Fulcrum 33 is rotated (reference picture 6 (b)).
Thereby, fixed contact 38a and moving contact the 38b connection of a contacts 38 of the open mode in Fig. 6 (a), do not scheme
Fixed contact and the moving contact separation of the b contacts shown.Based on the information of these a contacts 38 and b contacts, make for example with master
The electromagnetic contactor 50 of circuit connection turns off action and cuts off overload current.
In addition, after main circuit current cut-out, being carried out when the bending of main bimetal piece 15 is thus capable of sufficiently recovering multiple manually
In the case of position, the release link 43 in hand-reset state is pressed into downward as shown in phantom in Figure 5.
Acted by the hand-reset of the release link 43, resetting block 43h makes reset load effect by a contacts side plate spring 37
In the movable platen 35 of the tripped condition in Fig. 6 (b).Therefore, movable platen 35 is back to the position of the original state shown in Fig. 6 (b)
Put, and interlock plate 34 is back to the position of original state (stable state) by the second engagement pin 39b, thus to thermal overload after
Electrical equipment is resetted.
Under the hand-reset state, as shown in Fig. 2 the head protruded from open-close lid 4 of release link 43 connects by electromagnetism
The press-in limitation teat 7 that the side of the side of tentaculum 50 is formed on open-close lid 4 is covered.Therefore, as shown in Figures 7 and 8, when will be with
The coil terminals 52 of the right-hand member of the relative electromagnetic contactor 50 of release link 43 with towards the magnet exciting coil for being built in electromagnetic contactor 50
When the distribution 53 that is powered is connected, as shown in figure 8, may because distribution 53 pull around situation distribution 53 is in and thermal overload
The state that the release link 43 of relay 1 is contacted.In this case, match somebody with somebody in the side by the side of electromagnetic contactor 50 of release link 43
Press-in limitation teat 7 is equipped with, press-in limitation teat 7 is formed at open-close lid 4.Therefore, distribution 53 is pulled around into by being pressed into limit
The top of teat 7 processed, can reliably prevent distribution 53 from directly being contacted with release link 43.Therefore, because with electromagnetic contactor 50
The pulling around situation of distribution that coil terminals 52 or the auxiliary terminal of its left end side 55 are connected and distribution is passed through the top of release link 43
In the case of, the press-in of release link 43 can be reliably prevented using press-in limitation teat 7.
Moreover, the right-hand member side of release link 43 is extended to by will be pressed into limitation teat 7 as described above, even if in the quilt of distribution 53
In the case of pulling around to the right-hand member side of release link 43, also it can prevent that distribution 53 and release link 43 are direct using press-in limitation teat 7
Contact.Therefore, when making release link 43 carry out homing action, distribution 53, which will not turn into, to be hindered, and can ensure that the smooth of release link 43
Homing action.
On the other hand, in order to which the release link 43 of hand-reset state is switched into the state of automatically reseting, as shown in figure 3, beating
Open-close lid 4 is opened, the engaging of its engaging protuberances 6 and the locking recess 43g of release link 43 is released.In this condition, towards release link
The front end of the instruments such as 43 slotted eye 43a insertion screwdrivers, and it is pressed into release link 43.
By the action, due to rotationally constrained portion 2a, 2b is not present in the both sides for being formed at the convex portion 43i of release link 43
(reference picture 5), accordingly, it is capable to rotate release link 43.In this condition, release link 43 can be made to rotate substantially 90 toward the clockwise direction
Degree.Thereby, convex portion 43i is abutted with rotationally constrained portion 2a lower face side, to limit the movement of release link 43 upward.
In this condition, the locking recess 43j for being formed at the head of release link 43 can be with open-close lid 4 engaging protuberances 6
Engaging, can close open-close lid 4.By so closing open-close lid 4, the engaging protuberances 6 of open-close lid 4 and the locking of release link 43 are with recessed
Portion 43j engages, and therefore, limits the rotation of release link 43, release link 43 is in the state that automatically resets.
So, in the way of the state that automatically resets is in by release link 43 during closing switch lid 4, the regulation of dial plate 9 is adjusted
Portion 9a and action display and hand trip(ping) operation window 44 are capped.Therefore, it is identical with hand-reset state, in the state of automatically reseting
Under, the operation of regulation and the hand trip(ping) of the setting current that dial plate 11 is implemented can not be adjusted.
When overload current flows in this condition, the bending of main bimetal piece 15 is via mobile device 16, temperature-compensating
Bimetal piece 24 is transmitted as the rotation of release handle 23, and the reversing spring press section 29 of release handle 23 is to draft helical spring
36 are pressed.
Draft helical spring 36 abutted by the resetting block 43h with release link 43 of interlock plate 34 large-diameter portion 43h1 first
Engagement pin 39a limit reversion action so that the contact spacing of fixed contact 38a and moving contact 38b in a contacts 38 from
The fixed contact of b contacts smaller, (not shown) and the contact spacing of moving contact are from also less state.
In addition, when release link 43 is switched to automatically reset state when, even if overload current flow, work as draft helical spring
36 do not complete reversions action and main bimetal piece 15 cooling when, draft helical spring 36 also automatically returns back to original state.
So, according to above-mentioned first embodiment, in the opening and closing for covering the upper surface of the casing 2 of thermal overload relay 1
The press-in limitation teat 7 that the press-in to release link 43 is limited is formed on lid 4, in the state of open-close lid 4 is closed, press-in limit
Teat 7 processed is configured to along the back side of release link 43 and right flank.Therefore, will not be to the usual instrument of use of release link 43
Homing action is exerted one's influence, and release link 43 can be produced because of the external factor such as being pulled around distribution beyond homing action
Press-in action limited.Accordingly, it is capable to reliably prevent release link 43 to be unnecessarily pressed into and the mistake in reset state
Action.
Now, under hand-reset state, the state that automatically resets, the engaging protuberances 6 and release link 43 of open-close lid 4 are formed at
Locking with recess 43g or 43j engage, the rotation of release link 43 can be prevented.
Moreover, under hand-reset state, the state that automatically resets, the regulation on the top of casing 2 will be configured at using open-close lid 4
The adjustment portion 9a of dial plate 9, the action of contact reversing device are shown and hand trip(ping) operation window 44 is covered.It is thus impossible to utilize tune
Save dial plate 9 and carry out the regulation operation of setting current and the operation of hand trip(ping), the maloperation of thermal overload relay can be prevented.
Then, using Fig. 9 to Figure 12, second embodiment of the invention is illustrated.
In this second embodiment, limitation teat is will be pressed into be formed at lid 10 to replace open-close lid 4.
In this second embodiment, as shown in figs. 9 to 12, assembling and disassembling in the lid of the rear side of thermal overload relay 1
Press-in limitation teat 7 is formed with body 10.In addition, in Fig. 9~Figure 12, showing the state after open-close lid 4 is pulled down.
Herein, lid 10 will be formed in the back side of casing 2 and the opening portion covering of lower surface, and as shown in figure 12, it is bottom of by
Panel part 10a, left and right side plate portion 10b, 10c, backplate portion 10d constitute, wherein, above-mentioned left and right side plate portion 10b, 10c with
Extend upward from bottom surface plate portion 10a left and right ends portion than relatively low height, above-mentioned backplate portion 10d and bottom surface plate portion
The rear side connection of 10a and left and right side plate portion 10b, 10c.
As shown in figure 11, overleaf plate portion 10d lower end side protrude be formed with connecting pin 13, the connecting pin 13 carry out with
Engage during the assembling of electromagnetic contactor 50 with electromagnetic contactor 50.In addition, overleaf plate portion 10d upper end side protrusion is formed with
Connecting line sleeve 11a~11c is stated, connecting line 12a~12c is protruded from above-mentioned connecting line sleeve 11a~11c.Connecting line sleeve 11a
~11c is protruded from common flat-platy base portion 11d.
In addition, overleaf the right-hand member side of plate portion 10d upper end side is formed with intermediate step portion 10e.In the intermediate step portion
10e leading section is formed with the spigot surface 10f guided to the outer peripheral face of the rear end side of release link 43, and in the spigot surface
10f upper end is formed with press-in limitation teat 7.Therefore, release link 43 is formed on the spigot surface 2a of casing 2 and is formed at
The spigot surface 10f of lid 10 is guided into and can moved freely in the vertical direction.
In addition, as shown in figure 13, the breach 4a contacted with release link 43 and press-in limitation teat 7 is formed with open-close lid 4,
Engaging protuberances 6 are formed with the breach 4a face relative with the left end side of release link 43.
In this second embodiment, in addition to the foregoing structure, with above-mentioned first embodiment identical structure,
Identical symbol is marked for the part corresponding with first embodiment, and description is omitted.
According to the second embodiment, the state of release link 43 is configured with the rear side of the casing 2 of thermal overload relay 1
Under, by the way that lid 10 is inserted into casing 2 from rear side, the bottom surface and the back side of casing 2 can be covered with lid 10.
Now, release link 43 is guided using the spigot surface 10f for being formed at lid 10 and the spigot surface 2a for being formed at casing 2
Into can in the vertical direction slidably, the rear side on the head that the release link 43 is protruded from the upper surface of casing 2 and
The mode that right flank side is surrounded configures press-in limitation teat 7.
Therefore, the side of electromagnetic contactor 50 and right side surface side of release link 43 are pressed into limitation teat 7 and surrounded.Therefore, with it is upper
State that first embodiment is identical, in the state of the rear side of thermal overload relay 1 is connected with electromagnetic contactor 50, when by distribution
53 with the coil terminals 52 of electromagnetic contactor 50 when being connected, and is pulled around into and the upper surface of release link 43 in the distribution 53
In the case of, distribution 53 is abutted with the state of press-in limitation teat 7.Accordingly, it is capable to reliably prevent the upper of distribution 53 and release link 43
End in contact.Accordingly, it is capable to avoid because distribution 53 pull around situation release link 43 is pressed into reset position, to prevent malfunction
Make.
In addition, press-in limitation teat 7 also extends towards the right side surface side of release link 43.Thereby, distribution also can reliably be prevented
53 contact with the right flank of release link 43, and can successfully carry out the homing action of release link 43.
Moreover, press-in limitation teat 7 is formed at lid 10, accordingly, it is capable to make press-in limit teat 7 close to the side of release link 43
Face, and the spigot surface of release link 43 can be doubled as.
In addition, will be pressed into limitation teat 7 be formed at open-close lid 4 as in the first embodiment in the case of, in order to
Do not make press-in limitation teat 7 contact with release link 43 during 4 either on or off of open-close lid to be formed at slightly, it is necessary to will be pressed into limitation teat 7
Perhaps the position away from release link 43, it is impossible to given play to the guide function of release link 43.
In addition, in the above-described 2nd embodiment, limiting the spigot surface 10f in the formation release link 43 of lid 10 and press-in
The situation of teat 7 is illustrated, but is not limited to this, can also omit the spigot surface of release link 43 and only use casing 2 multiple
Position bar 43, which is supported to, in the vertical direction slidably, and only to form press-in limitation teat 7 in lid 10.
In addition, in the above-described 2nd embodiment, open-close lid 4 can be also omitted, and regulation dial plate 9 can be covered or open by configuring
Adjustment portion 9a, action display and hand trip(ping) operation window 44 and slidable slide lid, it is and convex in slide lid formation engaging
Portion 6.
In addition, in first and second above-mentioned embodiment, being carried out to the situation that press-in limitation teat 7 is formed as tabular
Illustrate, but be not limited to this, the outer peripheral face with the opposite side of release link 43 can be also set to the outer of the arbitrary shapes such as inclined plane
Side face.
Similarly, draw as long as the flat shape of press-in limitation teat 7 is avoided that because of the contact with release link 43 such as distribution
The press-in risen, can cover about 3/4 circumferential portion of half-cycle portions or covering of the outer peripheral face of release link 43, and can arbitrarily set
Level pressure enters to limit the girth of teat.
In addition, in first and second above-mentioned embodiment, to using the structure with the either on or off open-close lid 4 of hinge part 3
Situation be illustrated, but be not limited to this, also may be mounted to that free assembly and disassembly can be carried out from the upper surface side of casing 2.
In addition, in first and second above-mentioned embodiment, to what electromagnetic contactor 50 was connected with thermal overload relay 1
Situation is illustrated, but is not limited to this, can also connect the external connections such as shutter in addition to electromagnetic contactor 50
Equipment.
Symbol description
1 thermal overload relay
2 casings
4 open-close lids
5 inserting holes
6 engaging protuberances
7 press-in limitation teats
8 protrusion tabs
9 regulation dial plates
10 lids
15 main bimetal pieces
15a heaters
16 mobile devices
20 governor motions
21 contact reversing devices
22 regulation connecting rods
23 release handles
24 temperature compensating bimetal parts
25 link supporting portions
34 interlock plates
34a trip operation bars
35 movable platens
36 draft helical springs
37 a contacts side plate springs
The engagement pins of 39a first
The engagement pins of 39b second
43 release links
43a slotted eyes
43b~43e pillars
43f locking pieces
43g locking recesses
43h resetting blocks
43i convex portions
43j locking recesses
44 action displays and hand trip(ping) operation window
45 operating portions
50 electromagnetic contactors
Claims (7)
1. a kind of thermal overload relay, is configured with main bimetal piece, release handle, contact reversing device and operating portion in casing,
Wherein, the main bimetal piece is detected and conjugated when detecting overload to overload, the release handle be driven in it is described
The displacement for the mobile device that main bimetal piece is interlocked, the contact reversing device carries out reverse turn by the rotation of the release handle
Make to be switched over to contact, the operating portion is operated to the release handle and the contact reversing device,
The operating portion has：It is arranged at the adjustment portion of the regulation dial plate of the upper surface of casing；And institute is made by press-in action
The release link that contact reversing device returns back to original state is stated, makes the release link with side prominent towards the outside out of described casing
Formula is set,
The thermal overload relay is characterised by,
Press-in limitation teat is configured with the vicinity of the release link, the press-in limits homing action of the teat to the release link
Press-in action is limited caused by external factor in addition,
The casing has open-close lid, and the open-close lid covers the operating portion, and the press-in limitation teat is formed at into institute
State open-close lid,
The release link is configured in the hand-reset position that can be freely pressed into and by being carried out from the hand-reset position
Pressing rotation process and be maintained between the position that automatically resets of press-in state and switch over, in the hand-reset position
Place, the inserting hole for being formed at the engaging recessed part of the release link by closing the open-close lid to make and being formed at the open-close lid
Engaging protuberances engage.
2. thermal overload relay as claimed in claim 1, it is characterised in that
The press-in limitation teat is formed at the rear side being connected with external connection apparatus of the release link.
3. thermal overload relay as claimed in claim 1 or 2, it is characterised in that
The open-close lid has the inserting hole inserted for the release link,
The press-in limitation teat formation is around the inserting hole of the open-close lid.
4. thermal overload relay as claimed in claim 1, it is characterised in that
The release link is at the position that automatically resets, by closing the open-close lid, make to be formed at the release link from
Dynamic reset position locking engaging recessed part engages with the engaging protuberances.
5. thermal overload relay as claimed in claim 2, it is characterised in that
The press-in limitation teat is formed to prevent to cause institute the contact because with the distribution that the external connection apparatus is connected
State the press-in of release link.
6. a kind of thermal overload relay, is configured with main bimetal piece, release handle, contact reversing device and operating portion in casing,
Wherein, the main bimetal piece is detected and conjugated when detecting overload to overload, the release handle be driven in it is described
The displacement for the mobile device that main bimetal piece is interlocked, the contact reversing device carries out reverse turn by the rotation of the release handle
Make to be switched over to contact, the operating portion is operated to the release handle and the contact reversing device,
The operating portion has：It is arranged at the adjustment portion of the regulation dial plate of the upper surface of casing；And institute is made by press-in action
The release link that contact reversing device returns back to original state is stated, makes the release link with side prominent towards the outside out of described casing
Formula is set,
The thermal overload relay is characterised by,
Press-in limitation teat is configured with the vicinity of the release link, the press-in limits homing action of the teat to the release link
Press-in action is limited caused by external factor in addition,
The casing has：Open-close lid, the open-close lid covers the operating portion；Housing, the housing storage main bimetal piece,
The release handle, the contact reversing device and the operating portion；And lid, the lid is with the opening of the inaccessible housing of energy
The mode in portion can detachably be installed on the housing, and be provided with the multiple connecting line courts for making to be connected with external connection apparatus
The prominent connecting line in outside limits teat by portion, by the press-in and is formed at the open-close lid,
The release link is configured in the hand-reset position that can be freely pressed into and by being carried out from the hand-reset position
Pressing rotation process and be maintained between the position that automatically resets of press-in state and switch over, in the hand-reset position
Place, the inserting hole for being formed at the engaging recessed part of the release link by closing the open-close lid to make and being formed at the open-close lid
Engaging protuberances engage.
7. thermal overload relay as claimed in claim 6, it is characterised in that
The press-in limitation teat is formed to prevent to cause institute the contact because with the distribution that the external connection apparatus is connected
State the press-in of release link.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-256702 | 2012-11-22 | ||
| JP2012256702A JP6255664B2 (en) | 2012-11-22 | 2012-11-22 | Thermal overload relay |
| PCT/JP2013/005821 WO2014080558A1 (en) | 2012-11-22 | 2013-09-30 | Thermal overload relay |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104704599A CN104704599A (en) | 2015-06-10 |
| CN104704599B true CN104704599B (en) | 2017-07-25 |
Family
ID=50775756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380051074.1A Active CN104704599B (en) | 2012-11-22 | 2013-09-30 | Thermal overload relay |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6255664B2 (en) |
| KR (1) | KR101789224B1 (en) |
| CN (1) | CN104704599B (en) |
| WO (1) | WO2014080558A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6383183B2 (en) * | 2014-06-03 | 2018-08-29 | 太陽インキ製造株式会社 | Conductive adhesive and electronic component using the same |
| JP6881258B2 (en) | 2017-11-28 | 2021-06-02 | 富士電機機器制御株式会社 | Connection structure of electrical equipment |
| JP7424546B2 (en) | 2021-07-02 | 2024-01-30 | 富士電機機器制御株式会社 | Thermal overload relay |
| JP2023007656A (en) | 2021-07-02 | 2023-01-19 | 富士電機機器制御株式会社 | Thermal overload electrical appliance |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1353856A (en) * | 1999-05-20 | 2002-06-12 | 施耐德电器工业公司 | Protection relay and protected control set with front wiring |
| CN101847548A (en) * | 2009-03-27 | 2010-09-29 | 富士电机机器制御株式会社 | Thermal overload relay |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH069435Y2 (en) * | 1988-09-09 | 1994-03-09 | 富士電機株式会社 | Dial cover for thermal overload relay |
| JPH05274987A (en) * | 1992-03-26 | 1993-10-22 | Matsushita Electric Works Ltd | Thermal relay |
| JP2010009762A (en) * | 2008-06-24 | 2010-01-14 | Fuji Electric Fa Components & Systems Co Ltd | Thermal relay |
| JP4706772B2 (en) * | 2009-03-27 | 2011-06-22 | 富士電機機器制御株式会社 | Thermal overload relay |
| JP5099235B2 (en) * | 2011-01-07 | 2012-12-19 | 富士電機機器制御株式会社 | Thermal overload relay |
-
2012
- 2012-11-22 JP JP2012256702A patent/JP6255664B2/en active Active
-
2013
- 2013-09-30 WO PCT/JP2013/005821 patent/WO2014080558A1/en active Application Filing
- 2013-09-30 KR KR1020157008644A patent/KR101789224B1/en active IP Right Grant
- 2013-09-30 CN CN201380051074.1A patent/CN104704599B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1353856A (en) * | 1999-05-20 | 2002-06-12 | 施耐德电器工业公司 | Protection relay and protected control set with front wiring |
| CN101847548A (en) * | 2009-03-27 | 2010-09-29 | 富士电机机器制御株式会社 | Thermal overload relay |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20150053946A (en) | 2015-05-19 |
| KR101789224B1 (en) | 2017-10-23 |
| JP2014107023A (en) | 2014-06-09 |
| CN104704599A (en) | 2015-06-10 |
| JP6255664B2 (en) | 2018-01-10 |
| WO2014080558A1 (en) | 2014-05-30 |
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