CN104704599A - Thermal overload relay - Google Patents
Thermal overload relay Download PDFInfo
- Publication number
- CN104704599A CN104704599A CN201380051074.1A CN201380051074A CN104704599A CN 104704599 A CN104704599 A CN 104704599A CN 201380051074 A CN201380051074 A CN 201380051074A CN 104704599 A CN104704599 A CN 104704599A
- Authority
- CN
- China
- Prior art keywords
- release link
- press
- thermal overload
- overload relay
- 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.)
- Granted
Links
- 238000006073 displacement reaction Methods 0.000 claims abstract description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 230000000994 depressogenic effect Effects 0.000 abstract 1
- 210000002445 nipple Anatomy 0.000 description 38
- 230000001105 regulatory effect Effects 0.000 description 10
- 230000033001 locomotion Effects 0.000 description 6
- 230000002093 peripheral effect Effects 0.000 description 5
- 238000005452 bending Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H61/00—Electrothermal relays
- H01H61/01—Details
Landscapes
- Breakers (AREA)
Abstract
Provided is a thermal overload relay capable of preventing a reset bar from being depressed by an external cause other than a reset operation. A thermal overload relay in which the following are disposed inside a casing (2): a main bimetal which is displaced upon sensing an overload; a release lever driven by the displacement of a shifter linked to the main bimetal; a contact-point inverting mechanism which performs an inverting operation by turning the release lever, and switches a contact point; and an operation part for operating the release lever and the contact-point inverting mechanism, the operation part being provided with a reset bar (43) projecting to the outside from inside the casing and for causing the contact-point inverting mechanism to return to an initial state by a push action. A push restricting protrusion (7) for restricting a push action on the reset bar due to an external cause other than a reset action is disposed in the vicinity of the reset bar.
Description
Technical field
The present invention relates to a kind of thermal overload relay of the double-throw contact when overcurrent being detected, especially, relating to from tripping operation (trip) replying state to the improvement of the operating portion of recoil state.
Background technology
Detect and the thermal overload relay worked as to the overload current flowing to main circuit, there will be a known the device recorded in a kind of such as patent documentation 1.
In the thermal overload relay that this patent documentation 1 is recorded, side is connected with electromagnetic contactor overleaf.In addition, in the upper surface of thermal overload relay keeping right end position and the position of backrest surface is configured with the release link being returned back to recoil state by press-in from tripped condition highlightedly.
Prior art document
Patent documentation
Patent documentation 1: Japanese Patent Laid-Open 2010-232057 publication
Summary of the invention
The technical problem that invention will solve
But in the conventional example that above-mentioned patent documentation 1 is recorded, the rear side of the connection electromagnetic contactor in the upper surface of thermal overload relay is outstanding is configured with release link, and this release link returns back to recoil state by press-in from tripped condition.Therefore, there is following unsolved technical problem: when by distribution with when being formed at the external connection terminal sub-connection by thermal overload relay side of electromagnetic contactor, may distribution be made because of the pulling around situation of distribution to contact with release link, be pressed into release link and be in reset mode because of carelessness.
Therefore, the present invention is conceived to the unresolved technical problem of above-mentioned conventional example, and its object is to provides a kind of thermal overload relay that can prevent from being pressed into because of the external cause except homing action release link.
The technical scheme that technical solution problem adopts
In order to solve the problems of the technologies described above, first technical scheme of thermal overload relay of the present invention is following thermal overload relay: in casing, configure main bimetal piece, release handle, contact reversing device and operating portion, wherein, above-mentioned main bimetal piece detects overload and conjugates when overload being detected, above-mentioned release handle is driven in the displacement with the mobile device of above-mentioned main bimetal piece interlock, above-mentioned contact reversing device carries out reversion action to switch contact by the rotation of above-mentioned release handle, aforesaid operations portion operates above-mentioned release handle and above-mentioned contact reversing device, aforesaid operations portion is set as and release link is given prominence to towards the outside in said machine casing, this release link makes above-mentioned contact reversing device return back to initial condition by press-in action.In addition, be configured with press-in restriction teat near above-mentioned release link, the press-in action that because of external factor homing action beyond cause of this press-in restriction teat to above-mentioned release link limits.
In addition, in the second technical scheme of thermal overload relay of the present invention, above-mentioned press-in restriction teat is formed at the rear side of the connection external connection apparatus of above-mentioned release link.
In addition, in the 3rd technical scheme of thermal overload relay of the present invention, said machine casing has the open-close lid covering aforesaid operations portion, is formed with above-mentioned press-in restriction teat around the inserting hole that the above-mentioned release link of the confession of above-mentioned open-close lid is inserted.
In addition, in the 4th technical scheme of thermal overload relay of the present invention, above-mentioned release link is configured to and to be maintained at automatically reseting between position of press-in state by carrying out pressing rotary manipulation from above-mentioned hand-reset position and to switch in the hand-reset position that can freely be pressed into, and engages to keep above-mentioned hand-reset position with the engaging protuberance of the inserting hole being formed at above-mentioned open-close lid by making the engaging recessed part being formed at above-mentioned release link.
In addition, in the 5th technical scheme of thermal overload relay of the present invention, said machine casing has: housing, the above-mentioned main bimetal piece of this housing storage, above-mentioned release handle, above-mentioned contact reversing device and aforesaid operations portion; And lid, this lid can detachably be installed on above-mentioned housing in the mode of the peristome of the inaccessible above-mentioned housing of energy, and there is the connecting line passage that the multiple connecting lines be connected with said external connection device are given prominence to towards the outside, be formed with above-mentioned press-in restriction teat at above-mentioned lid.
In addition, in the 6th technical scheme of thermal overload relay of the present invention, above-mentioned press-in restriction teat prevents the contact of the distribution because being connected with said external connection device and causes the press-in of above-mentioned release link.
Invention effect
According to the present invention, press-in restriction teat is configured with near the outstanding release link being formed at casing, this press-in restriction teat is to the limiting the press-in action of release link of producing because of the external factor except homing action, therefore, release link reliably can be stoped to be pressed into because of the external factor beyond homing action, can misoperation to be prevented.
Accompanying drawing explanation
Fig. 1 is the stereoscopic figure representing the state linked together by the thermal overload relay of electromagnetic contactor and first embodiment of the invention.
The major part of the thermal overload relay of Fig. 1 is amplified the stereogram represented by Fig. 2.
Fig. 3 is the stereogram representing the state after being opened by the open-close lid of the thermal overload relay of Fig. 1.
Fig. 4 is the stereogram of the open-close lid representing thermal overload relay.
Fig. 5 is the cutaway view on the A-A line under the state after being pulled down by the open-close lid of Fig. 3.
Fig. 6 is the figure representing contact reversing device, Fig. 6 (a) be the figure representing initial condition, Fig. 6 (b) is the figure representing tripped condition.
Fig. 7 is the vertical view representing the state linked together by the electromagnetic contactor of distribution and Fig. 1.
Fig. 8 is the end view of Fig. 7.
Fig. 9 is the stereoscopic figure identical with Fig. 1 representing second embodiment of the invention.
The major part of the second execution mode is amplified the vertical view represented by Figure 10.
Figure 11 is the stereogram observed from rear side of the thermal overload relay of the second execution mode.
Figure 12 is the stereogram of the thermal overload relay representing the second execution mode and the lid pulled down.
Figure 13 is the stereogram of the open-close lid representing the second execution mode.
Embodiment
Below, be described with reference to first execution mode of accompanying drawing to thermal overload relay of the present invention (Japanese: Hot Move Xing Over Negative lotus continue Electricity device).
Fig. 1 is the stereoscopic figure representing state electromagnetic contactor and thermal overload relay of the present invention linked together.
In the drawings, symbol 1 is thermal overload relay, and the rear side of this 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 open-close lid 4 opening closedown with the hinge part 3 of left part at the upper surface of this casing 2.
As shown in Figure 3, be provided with operating portion 45 at the upper surface of casing 2, this operating portion 45 is formed by regulating the action of the adjusting portion 9a of dial plate 9, the release link 43 of aftermentioned contact reversing device being carried out to reset operation and contact reversing device to show double hand trip(ping) operation window 44.
As shown in Figure 4, be formed with the inserting hole 5 inserted for release link 43 at open-close lid 4, be formed with the engaging protuberance 6 to the locking that the rotation of release link 43 limits in the left end side of this inserting hole 5.
In addition, be formed with to be pressed into limit teat 7 at the lateral margin relative with electromagnetic contactor 50 of the inserting hole 5 of open-close lid 4, this press-in restriction protuberance 7 limits the press-in action produced because of the external factor except the homing action except release link 43.As shown in Figure 2, this press-in restriction teat 7 is formed by the protrusion tab 8 of the tabular along the hinder marginal part of inserting hole 5 and edge, right side.The projecting height of this protrusion tab 8 be chosen to be close open-close lid 4 and making release link 43 state outstanding from inserting hole 5, release link 43 can not be press-fit into the such height of reset position.
As shown in Figure 5, governor motion 20 and contact reversing device 21 is configured with in casing 2, wherein, above-mentioned governor motion 20 is driven in the displacement of the mobile device (shifter) 16 engaged with the free end of main bimetal piece 15, and above-mentioned contact reversing device 21 is switched contact by the action of governor motion 20.
Governor motion 20 comprises: regulating connecting rod 22; Release handle 23, this release handle 23 is supported on this regulating connecting rod in the mode that can freely rotate; And temperature compensating bimetal part 24, this temperature compensating bimetal part 24 is fixed on this release handle 23 and engages with mobile device 16.
Regulating connecting rod 22 is made up of the link supporting portion 25 of supporting release handle 23 and the leg 26 that extends downward from the side in link supporting portion 25.In addition, fulcrum 27 is provided with at the inwall of the lower side of casing 2 in mode outstanding in casing 2.In addition, by the dead eye 26a of leg 26 being inserted in the leading section to the undergauge of fulcrum 27, regulating connecting rod 22 entirety is supported on casing 2 in the mode that can freely rotate centered by fulcrum 27.
Release handle 23 utilizes rotation axis 23a to be supported on link supporting portion 25 in the mode that can rotate, and riveted joint is fixed wtih the end of temperature compensating bimetal part 24 overleaf.
As shown in Figure 6, contact reversing device 21 comprises reversing device support 32, interlock plate 34, movable platen 35 and draft helical spring 36.Reversing device support sector 32 is configured in casing 2.Interlock plate 34 is configured near reversing device support 32, and is supported on fulcrum 33 in the mode that can freely rotate, and this fulcrum 33 is located at the inwall of casing 2.The top 35b of movable platen 35 is configured to can with the bottom 35a abutted with reversing device support 32 for fulcrum freely swings.Draft helical spring 36 is located between the 35b side, top of movable platen 35 and the spring-loaded portion 32a of reversing device support 32.
In addition, interlock plate 34 is provided with the first engagement pin 39a and the second engagement pin 39b in the mode of the upper end across movable platen 35, this first engagement pin 39a and the second engagement pin 39b makes the reversion action of interlock plate 34 and movable platen 35, reply action together with rotate around fulcrum 33.In addition, normally opened contact (a contact) side plate spring 37 has been arranged side by side at reversing device support 32 with the state making free end extend upward.The fixed contact 38a of a contact 38 is fixed with in the free end side of this leaf spring 37.In addition, the moving contact 38b of a contact 38 be connected with fixed contact 38a is fixed with at the top 35b of movable platen 35.
In addition, although not shown, but be configured with normally-closed contact (b contact) side plate spring in the position across interlock plate 34 opposition side relative with a contact 38 with the state that free end extends upward, and be configured with contact supporting plate plate with the state relative with this leaf spring.
As shown in amplify in Fig. 2, be formed with the criss-cross slotted eye 43a inserted for instruments such as the screwdrivers for spinning reduction bar 43 at the head upper surface of release link 43, and be formed with four pillar 43b ~ 43e.The upper end of the pillar 43e in these pillars 43b ~ 43e is formed towards locking piece 43f protruding outside.
In addition, the outer peripheral face between pillar 43b and 43e is formed and arrives slotted eye 43a and the locking recess 43g engaged with the engaging protuberance 6 of open-close lid 4.In addition, as shown in Figure 5, at the side face of the other end (relative to the end of head by the axial opposition side) side of this release link 43, in the scope of roughly 90 degree, headward resetting block 43h expanding is gradually formed with.In addition, protuberance 43i is had being formed at the neck formation between head and resetting block 43h.
As shown in Figure 5, release link 43 is configured at the top in casing 2 in the axial mode towards above-below direction.In addition, the returning spring (not shown) that the Compress Spring that release link 43 is installed in the periphery of lower end side is formed exerts a force upward, and head is given prominence to from the upper surface of casing 2.Herein, the rotation limiting unit 2a, the 2b that are located in casing 2 are relative with the protuberance 43i of the release link 43 configured as shown in Figure 5 from both sides.Therefore, even if make the roughly Zone Full of head rotate from the release link 43 that the upper surface of casing 2 is outstanding, abutting with protuberance 43i by rotating limiting unit 2a, 2b, also can limit the rotation of release link 43.
In addition, as shown in dash-dot lines in fig. 5, when release link 43 being pressed in the mode that the roughly Zone Full of its head is positioned at casing 2, the resetting block 43h of release link 43 makes the movable platen 35 being in the tripped condition shown in Fig. 6 (b) be back to initial position (stable state) by contacting with a contact side plate spring 37.
Trip operation bar 34a is formed in the upper end of interlock plate 34.When interlock plate 34 is in initial condition, hand trip(ping) operation window 44 (with reference to Fig. 1) can be held concurrently towards this trip operation bar 34a from the action display of the upper surface being located at casing 2.In addition, the instruments such as the screwdriver inserted from the double hand trip(ping) operation window 44 of action display can be made to engage with trip operation bar 34a, and by interlock plate 34, movable platen 35 is rotated towards the direction becoming tripped condition.
In addition, electromagnetic contactor 50 is connected with the rear side of thermal overload relay 1.As shown in Figure 7, by the connecting line 12a ~ 12c given prominence to from the such as three connecting line sleeve 11a ~ 11c being formed at lid 10 to be electrically connected the connection carrying out this thermal overload relay 1 and electromagnetic contactor 50 with three splicing ear 51a ~ 51c of electromagnetic contactor 50, wherein, lid 10 is located at the rear side of thermal overload relay 1.
Then, the action of the thermal overload relay 1 of present embodiment is described.
First, the action of thermal overload relay when making release link 43 be in hand-reset state is described.
As shown in Figure 3, by open-close lid 4 is set to open mode, thus regulate the adjusting portion 9a of dial plate 9 to open, therefore, can utilize the instruments such as screwdriver that the adjusting portion 9a of adjustment dial plate 9 is rotated, change the rotational angle of release handle 23, to regulate setting current.
In addition, the instruments such as the screwdriver insert hand trip(ping) operation window 44 of holding concurrently from action display engage with trip operation bar 34a, thus thermal overload relay tentatively can be set to hand-reset state.That is, make instrument engage with trip operation bar 34a, the interlock plate 34 of the initial condition of Fig. 6 (a) is rotated clockwise around fulcrum 33.The the second engagement pin 39b engaged with movable platen 35 by the rotation of this interlock plate 34 makes interlock plate 34 rotate towards the direction becoming tripped condition, and the fixed contact 38a of a contact 38 and moving contact 38b connects.Now, the fixed contact of not shown b contact and moving contact are separated.
Like this, if terminate the adjustment of setting current, the determination of hand-reset state, then close open-close lid 4, adjusting portion 9a, the double hand trip(ping) operation window 44 of action display of adjustment dial plate 9 are opened and closed lid 4 and cover.On the other hand, the head of release link 43 is given prominence to upward through in the inserting hole 5 of open-close lid 4.Now, the locking recess 43g of the engaging protuberance 6 and release link 43 that are formed at open-close lid 4 engages, and the rotation of release link 43 is locked, thus is in the hand-reset state of the press-in only allowing release link 43.
Therefore, under hand-reset state, can not carry out regulating the adjustment of setting current implemented of dial plate 9 and the operation of hand trip(ping).
In addition, when overload current flows to the thermal overload relay of present embodiment, as shown in Figure 5, make heater 15a generate heat because of overload current, thus main bimetal piece 15 is bent, because of the displacement of the free end of main bimetal piece 15, mobile device 16 is conjugated towards the direction of arrow of the symbol Q of Fig. 5.When the free end of the mobile device 16 pairs of temperature compensating bimetal parts 24 utilizing displacement presses, the release handle 23 integrated with temperature compensating bimetal part 24 rotates clockwise around the rotation axis 23a being supported on regulating connecting rod 22, and the draft helical spring press section 23f of release handle 23 presses draft helical spring 36.
In addition, when release handle 23 carries out clockwise rotation, when the pressing force of draft helical spring press section 23f exceedes the acting force of the spring of draft helical spring 36, movable platen 35 with bottom 35a for fulcrum carries out reversion action.In addition, together with the reversion action of this movable platen 35, the interlock plate 34 being subject to the reversion action of movable platen 35 via the first engagement pin 39a also rotates (with reference to Fig. 6 (b)) around fulcrum 33.
By this, the fixed contact 38a and the moving contact 38b that are in a contact 38 of the open mode of Fig. 6 (a) connect, and the fixed contact of not shown b contact and moving contact are separated.Based on the information of these a contacts 38 and b contact, the electromagnetic contactor 50 be such as connected with main circuit is made to carry out disconnection action and cut off overload current.
In addition, after main circuit current cuts off, when carrying out hand-reset when the bending fully recovery of main bimetal piece 15, the release link 43 being in hand-reset state is pressed into as shown in phantom in Figure 5 downward.
By the hand-reset action of this release link 43, resetting block 43h makes reset load act on the movable platen 35 of the tripped condition being in Fig. 6 (b) by a contact side plate spring 37.Therefore, movable platen 35 is back to the position of the initial condition shown in Fig. 6 (b), and makes interlock plate 34 be back to the position of initial condition (stable state) by the second engagement pin 39b, thus resets to thermal overload relay.
Under this hand-reset state, as shown in Figure 2, the press-in restriction teat 7 leaning on the side of electromagnetic contactor 50 side to be formed on open-close lid 4 of the head outstanding from open-close lid 4 of release link 43 covers.Therefore, as shown in Figures 7 and 8, when the coil terminals 52 of the right-hand member by the electromagnetic contactor 50 relative with release link 43 is connected with the distribution 53 carrying out being energized towards the magnet exciting coil being built in electromagnetic contactor 50, as shown in Figure 8, distribution 53 may be made to be in the state contacted with the release link 43 of thermal overload relay 1 because of the pulling around situation of distribution 53.In this case, be configured with press-in restriction teat 7 in the side by electromagnetic contactor 50 side of release link 43, this press-in restriction teat 7 is formed at open-close lid 4.Therefore, distribution 53, by the top pulled around into by press-in restriction teat 7, can reliably prevent distribution 53 from directly contacting with release link 43.Therefore, make when the pulling around situation of distribution because being connected with the coil terminals 52 of electromagnetic contactor 50 or the auxiliary terminal 55 of its left end side distribution by above release link 43, press-in restriction teat 7 can be utilized reliably to stop the press-in of release link 43.
And, by described above, press-in restriction teat 7 is extended to the right-hand member side of release link 43, even if when distribution 53 by pull around to release link 43 right-hand member side, press-in restriction teat 7 also can be utilized to prevent distribution 53 from directly contacting with release link 43.Therefore, when making release link 43 carry out homing action, distribution 53 can not become obstruction, can guarantee the homing action smoothly of release link 43.
On the other hand, in order to the release link 43 of hand-reset state is switched to the state of automatically reseting, as shown in Figure 3, open open-close lid 4, remove the engaging of its engaging protuberance 6 and locking recess 43g of release link 43.In this condition, the slotted eye 43a towards release link 43 inserts the front end of the instruments such as screwdriver, and is pressed into release link 43.
By this action, rotate limiting unit 2a, 2b (with reference to Fig. 5) owing to not existing in the both sides of the protuberance 43i being formed at release link 43, therefore, release link 43 can be made to rotate.In this condition, release link 43 can be made to rotate roughly 90 degree toward the clockwise direction.By this, protuberance 43i abuts with the lower face side rotating limiting unit 2a, to limit release link 43 movement upward.
In this condition, the locking recess 43j being formed at the head of release link 43 can engage with the engaging protuberance 6 of open-close lid 4, can close open-close lid 4.By closing open-close lid 4 like this, the engaging protuberance 6 of open-close lid 4 engages with the locking recess 43j of release link 43, therefore, limits the rotation of release link 43, makes release link 43 be in the state of automatically reseting.
Like this, when being in the mode closing switch lid 4 of the state of automatically reseting with release link 43, the adjusting portion 9a of dial plate 9 and the double hand trip(ping) operation window 44 of action display is regulated to be capped.Therefore, identical with hand-reset state, under the state of automatically reseting, can not carry out regulating the adjustment of setting current implemented of dial plate 11 and the operation of hand trip(ping).
When overload current flows in this condition, the bending of main bimetal piece 15 is transmitted as the rotation of release handle 23 via mobile device 16, temperature compensating bimetal part 24, and 29 pairs, the reversing spring press section draft helical spring 36 of release handle 23 presses.
Draft helical spring 36 is limited reversion action by the first engagement pin 39a abutted with the large-diameter portion 43h1 of the resetting block 43h of release link 43 of interlock plate 34, thus is in the fixed contact 38a of a contact 38 and the contact spacing of moving contact 38b from less, the not shown fixed contact of b contact and the contact spacing of moving contact from also less state.
In addition, when release link 43 is switched to automatically reset state time, even if overload current flowing, when when draft helical spring 36 does not complete reversion action, main bimetal piece 15 cools, draft helical spring 36 also automatically returns back to initial condition.
Like this, according to above-mentioned first execution mode, the open-close lid 4 that the upper surface of the casing 2 by thermal overload relay 1 covers is formed the press-in restriction teat 7 limited the press-in of release link 43, under the state of closing open-close lid 4, press-in restriction teat 7 is configured to the back side along release link 43 and right flank.Therefore, can not exert one's influence to the homing action of the usual instrument of the use of release link 43, and can limit the press-in action produced because of external factor such as the such as distribution beyond homing action pull around of release link 43.Therefore, release link 43 can be reliably prevented to be in the misoperation of reset mode by being unnecessarily pressed into.
Now, under hand-reset state, the state that automatically resets, locking recess 43g or 43j of the engaging protuberance 6 and release link 43 that are formed at open-close lid 4 engages, and can prevent the rotation of release link 43.
And, under hand-reset state, the state that automatically resets, utilize open-close lid 4 by being configured at the adjusting portion 9a of the adjustment dial plate 9 on casing 2 top, the action display of contact reversing device hand trip(ping) operation window 44 of holding concurrently covers.Therefore, can not utilize and regulate dial plate 9 to carry out the adjustment operation of setting current and the operation of hand trip(ping), the misoperation of thermal overload relay can be prevented.
Then, use Fig. 9 to Figure 12, second embodiment of the invention is described.
In this second embodiment, press-in restriction teat is formed at lid 10 to replace open-close lid 4.
In this second embodiment, as shown in figs. 9 to 12, on the lid 10 of the rear side of thermal overload relay 1, press-in restriction teat 7 is formed with installing and removing.In addition, in Fig. 9 ~ Figure 12, the state after being pulled down by open-close lid 4 is shown.
Herein, the peristome at the back side and lower surface that are formed at casing 2 covers by lid 10, as shown in figure 12, it is made up of bottom panel portion 10a, left and right sides panel part 10b, 10c, backplate portion 10d, wherein, above-mentioned left and right sides panel part 10b, 10c extend upward with the both ends, left and right of lower height from this bottom panel portion 10a, and above-mentioned backplate portion 10d is connected with the rear side of bottom panel portion 10a and left and right sides panel part 10b, 10c.
As shown in figure 11, the lower end side of plate portion 10d is outstanding is overleaf formed with connecting pin 13, and this connecting pin 13 engages with electromagnetic contactor 50 when carrying out the assembling with electromagnetic contactor 50.In addition, the upper end side of plate portion 10d is outstanding is overleaf formed with above-mentioned connecting line sleeve 11a ~ 11c, connecting line 12a ~ 12c and gives prominence to from above-mentioned connecting line sleeve 11a ~ 11c.Connecting line sleeve 11a ~ 11c gives prominence to from common flat-platy base portion 11d.
In addition, the right-hand member side of the upper end side of plate portion 10d is formed with intermediate step portion 10e overleaf.Be formed with at the leading section of this intermediate step portion 10e the spigot surface 10f that the outer peripheral face of the rear end side of release link 43 is guided, and be formed with press-in restriction teat 7 in the upper end of this spigot surface 10f.Therefore, the spigot surface 2a that release link 43 is formed on casing 2 guides into can move freely in the vertical direction with the spigot surface 10f being formed at lid 10.
In addition, as shown in figure 13, be formed with release link 43 at open-close lid 4 and be pressed into the breach 4a limiting teat 7 and contact, being formed in the face relative with the left end side of release link 43 of this breach 4a and engaging protuberance 6.
In this second embodiment, in addition to the foregoing structure, there is the structure identical with above-mentioned first execution mode, identical symbol is marked for the part corresponding with the first execution mode, and description is omitted.
According to this second execution mode, under the state that the rear side of the casing 2 of thermal overload relay 1 is configured with release link 43, by lid 10 is inserted casing 2 from rear side, bottom surface and the back side of casing 2 can be covered with lid 10.
Now, utilize the spigot surface 10f being formed at lid 10 with the spigot surface 2a being formed at casing 2, release link 43 to be guided into and can be free to slide in the vertical direction, the mode surrounded with the rear side of the head given prominence to from the upper surface of casing 2 by this release link 43 and right flank side configures press-in and limits teat 7.
Therefore, electromagnetic contactor 50 side of release link 43 and right flank side are pressed into restriction teat 7 and surround.Therefore, identical with above-mentioned first execution mode, under the state that the rear side of thermal overload relay 1 is connected with electromagnetic contactor 50, when distribution 53 is connected with the coil terminals 52 of electromagnetic contactor 50, when this distribution 53 pulled around into contact with the upper surface of release link 43, the state that distribution 53 limits teat 7 with press-in abuts.Therefore, the upper-end contact of distribution 53 and release link 43 can reliably be prevented.Therefore, can avoid making release link 43 be pressed into reset position, to prevent misoperation because of the pulling around situation of distribution 53.
In addition, press-in restriction teat 7 also extends towards the right flank side of release link 43.By this, also reliably can prevent distribution 53 from contacting with the right flank of release link 43, and successfully can carry out the homing action of release link 43.
And press-in restriction teat 7 is formed at lid 10, therefore, press-in can be made to limit teat 7 near the side of release link 43, and the spigot surface of release link 43 can be doubled as.
In addition, when press-in restriction teat 7 is formed at open-close lid 4 as in the first embodiment, limit teat 7 to not make press-in when open-close lid 4 opens closedown to contact with release link 43, need press-in restriction teat 7 to be formed at slightly away from the position of release link 43, the guide function of release link 43 can not have been given play to.
In addition, in the above-described 2nd embodiment, the situation of the spigot surface 10f and press-in restriction teat 7 that form release link 43 at lid 10 is illustrated, but be not limited thereto, also can omit the spigot surface of release link 43 and only with casing 2, release link 43 is supported to and can be free to slide in the vertical direction, and only forming press-in restriction teat 7 at lid 10.
In addition, in the above-described 2nd embodiment, also can omit open-close lid 4, and configuration can cover or open the adjusting portion 9a, the action display that regulate dial plate 9 and to hold concurrently hand trip(ping) operation window 44 and slidable slide lid, and engage protuberance 6 in the formation of this slide lid.
In addition, in first and second execution mode above-mentioned, situation press-in restriction teat 7 being formed as to tabular is illustrated, but is not limited thereto, and also the outer peripheral face with release link 43 opposite side can be set to the outer peripheral face of the arbitrary shapes such as inclined plane.
Similarly, as long as the flat shape of press-in restriction teat 7 can avoid the press-in caused because of distribution etc. and the contact of release link 43, the half-cycle portions of the outer peripheral face of release link 43 can be covered or cover about 3/4 circumferential portion, and at random can set the girth of press-in restriction teat.
In addition, in first and second execution mode above-mentioned, situation employing hinge part 3 being opened to the structure of closing open-close lid 4 is illustrated, but is not limited thereto, and also can be mounted to carry out free mounting or dismounting from the upper surface side of casing 2.
In addition, in first and second execution mode above-mentioned, situation about being connected with thermal overload relay 1 by electromagnetic contactor 50 is illustrated, but is not limited thereto, also can connect the external connection apparatus such as the shutter except electromagnetic contactor 50.
Symbol description
1 thermal overload relay
2 casings
4 open-close lids
5 inserting holes
6 engaging protuberances
7 press-in restriction teats
8 protrusion tabs
9 regulate dial plate
10 lids
15 main bimetal piece
15a heater
16 mobile devices
20 governor motions
21 contact reversing devices
22 regulating connecting rods
23 release handles
24 temperature compensating bimetal parts
25 link supporting portions
34 interlock plates
34a trip operation bar
35 movable platens
36 draft helical springs
37 a contact side plate springs
39a first engagement pin
39b second engagement pin
43 release links
43a slotted eye
43b ~ 43e pillar
43f locking piece
43g locking recess
43h resetting block
43i protuberance
43j locking recess
The double hand trip(ping) operation window of 44 action display
45 operating portions
50 electromagnetic contactors
Claims (6)
1. a thermal overload relay, main bimetal piece, release handle, contact reversing device and operating portion is configured with in casing, wherein, described main bimetal piece detects overload and conjugates when overload being detected, described release handle is driven in the displacement with the mobile device of described main bimetal piece interlock, described contact reversing device carries out reversion action to switch contact by the rotation of described release handle, and described operating portion operates described release handle and described contact reversing device
Described operating portion is provided with release link in mode outstanding towards the outside in described casing, and this release link makes described contact reversing device return back to initial condition by press-in action,
The feature of described thermal overload relay is,
Near described release link, be configured with press-in restriction teat, this press-in restriction teat limits the press-in action that the external factor beyond the homing action of described release link causes.
2. thermal overload relay as claimed in claim 1, is characterized in that,
Described press-in restriction teat is formed at the rear side be connected with external connection apparatus of described release link.
3. thermal overload relay as claimed in claim 1 or 2, is characterized in that,
Described casing has the open-close lid covering described operating portion, formation described press-in restriction teat around the inserting hole that the described release link of the confession of described open-close lid is inserted.
4. thermal overload relay as claimed in claim 3, is characterized in that,
Described release link is configured to and to be maintained at automatically reseting between position of press-in state by carrying out pressing rotary manipulation from described hand-reset position and to switch in the hand-reset position that can freely be pressed into, and engages to keep described hand-reset position with the engaging protuberance of the inserting hole being formed at described open-close lid by making the engaging recessed part being formed at described release link.
5. thermal overload relay as claimed in claim 1 or 2, is characterized in that,
Described casing has:
Housing, the storage of this housing described main bimetal piece, described release handle, described contact reversing device and described operating portion; And
Lid, this lid can detachably be installed on described housing in the mode of the peristome of the inaccessible described housing of energy, and is provided with the connecting line passage that the multiple connecting lines be connected with described external connection apparatus are given prominence to towards the outside,
Described lid is formed described press-in restriction teat.
6. the thermal overload relay as described in claim 2 or 5, is characterized in that,
The press-in that described press-in restriction teat is formed to prevent the contact of the distribution because being connected with described external connection apparatus and causes described 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 true CN104704599A (en) | 2015-06-10 |
| CN104704599B 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 (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05274987A (en) * | 1992-03-26 | 1993-10-22 | Matsushita Electric Works Ltd | Thermal relay |
| 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 |
| JP2012146400A (en) * | 2011-01-07 | 2012-08-02 | Fuji Electric Fa Components & Systems Co Ltd | Thermal overload relay |
Family Cites Families (3)
| 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 |
| 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 |
-
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 (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05274987A (en) * | 1992-03-26 | 1993-10-22 | Matsushita Electric Works Ltd | Thermal relay |
| 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 |
| JP2012146400A (en) * | 2011-01-07 | 2012-08-02 | Fuji Electric Fa Components & Systems Co Ltd | 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 |
| CN104704599B (en) | 2017-07-25 |
| JP6255664B2 (en) | 2018-01-10 |
| WO2014080558A1 (en) | 2014-05-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4621751B2 (en) | Circuit breaker | |
| CN104704599A (en) | Thermal overload relay | |
| JP5588337B2 (en) | Circuit breaker | |
| US20070034495A1 (en) | Miniature circuit breaker | |
| JP4933208B2 (en) | Circuit breaker | |
| WO2009110347A1 (en) | Circuit breaker | |
| CN108022811B (en) | Circuit breaker with thermal trip | |
| JP4706772B2 (en) | Thermal overload relay | |
| JP5620768B2 (en) | Circuit breaker | |
| WO2009110343A1 (en) | Circuit breaker | |
| JP4616893B2 (en) | Circuit breaker | |
| JP4616894B2 (en) | Circuit breaker | |
| CN101295608B (en) | Circuit breaker | |
| CN102386028B (en) | Transmission and tripping mechanism of moulded case circuit breaker | |
| JP4906881B2 (en) | Thermal overload relay | |
| KR101052715B1 (en) | Thermal Overload Relay | |
| CN209912824U (en) | Coupler with sectional disconnection | |
| KR200411508Y1 (en) | Thermal overload relay | |
| KR101759597B1 (en) | Thermal overload relay | |
| CN216054542U (en) | Operating mechanism of circuit breaker | |
| CN106409622B (en) | Breaker | |
| JP4778377B2 (en) | Circuit breaker | |
| WO2024042746A1 (en) | Thermal overload relay | |
| TW202303650A (en) | Thermomotive overload relay | |
| JP3877026B2 (en) | Thermal overload relay |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: Saitama Prefecture, Japan Patentee after: FUJI ELECTRIC FA COMPONENTS & SYSTEMS Co.,Ltd. Address before: Tokyo Patentee before: FUJI ELECTRIC FA COMPONENTS & SYSTEMS Co.,Ltd. |
|
| CP02 | Change in the address of a patent holder |