CN1276617A - Thermal loop breaker switch - Google Patents
Thermal loop breaker switch Download PDFInfo
- Publication number
- CN1276617A CN1276617A CN 00102249 CN00102249A CN1276617A CN 1276617 A CN1276617 A CN 1276617A CN 00102249 CN00102249 CN 00102249 CN 00102249 A CN00102249 A CN 00102249A CN 1276617 A CN1276617 A CN 1276617A
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- China
- Prior art keywords
- actuator
- opens circuit
- contact
- bimetallic element
- circuit
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/22—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having electrothermal release and no other automatic release
- H01H73/26—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having electrothermal release and no other automatic release reset by tumbler
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/123—Automatic release mechanisms with or without manual release using a solid-state trip unit
- H01H2071/124—Automatic release mechanisms with or without manual release using a solid-state trip unit with a hybrid structure, the solid state trip device being combined with a thermal or a electromagnetic trip
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- 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
- H01H2083/206—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 with thermal shunt trip
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/123—Automatic release mechanisms with or without manual release using a solid-state trip unit
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/50—Manual reset mechanisms which may be also used for manual release
- H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
- H01H71/527—Manual reset mechanisms which may be also used for manual release actuated by lever making use of a walking beam with one extremity latchable, the other extremity actuating or supporting the movable contact and an intermediate part co-operating with the actuator
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- 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
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- Breakers (AREA)
- Thermally Actuated Switches (AREA)
Abstract
The thermal circuit breaker and switch has fixed and movable contacts, and non-conductive contact and trip actuators. The movable contact is provided on the free end of a lever arm. The contact actuator transfers movement from a rocker or operator to the movable contact arm when no overload condition exists. The trip actuator is L shaped and rotates in a socket when engaged by a thermally sensitive bi-metallic element so as to allow one end of the contact actuator to float freely. The bi-metallic element is so positioned as to engage and rotate the trip actuator only when the bi-metallic element is deformed due to an overheat condition that occurs with an overcurrent. A compression spring acts between the upstanding legs of the trip actuator and the underside of the rocker thus biasing the rocker to the 'off' position and biasing the trip actuator to the 'reset' position.
Description
The application is the No.09/328107 number serial continuation application of submitting on June 8th, 1999 of applying for.This No.09/328107 number series application in this article as a reference.
The present invention relates to the hot loop protective device, this device also can be used as the switch of ON/OFF action, more particularly, the present invention relates to simpler and inexpensive structure more in a kind of manufacturing.This hot loop protector/construction of switch also can prevent to transship operating mode when attempting to adopt manual compensation continuously carries out or constantly carries out circularly.
As everyone knows, switching device can be used as thermal protector circuit breaker or switch.When bimetallic element detects an overload during operating mode, QA bimetallic element has been embedded in and has adopted in a kind of similar thermal protector that protrudes into the insulating material signal generator between each switch contact.Adopt the example of the heat portective switch of such signal generator can be referring to U.S. Pat 5089799 and 5264817.
Operate by a button actions as other thermel protection devices that a switch uses, and require this button after this device disconnects this loop, to pull out so that this loop protection device is resetted by manual.The U.S. Pat 3311725 of Butler discloses a kind of so general circuit breaker/switch.
Other thermostat also has a quick acting dish that can be resetted by a button.This device can be referring to U.S. Pat 4791397 and 4628295.
Although the structure of thermal loop breaker is more complicated, manufacturing cost is also higher, and it still extensively adopts and is known.For example can be referring to U.S. Pat 4931762; 4937548 and 4258349.
Thermal loop breaker switch by the another kind of form of present inventor invention uses bimetallic element as contact arm.Referring to U.S. Pat 5847638.
The another kind of method that a kind of waved switch type thermal loop breaker is provided is disclosed in the U.S. Pat 5491460.Yet this patent needs many metallic elements and metal spring element to obtain " auto-cutout " operation necessary in this protective circuit breaker as other patents.Can also wherein need many specially designed metallic elements and spring referring to U.S. Pat 5889457 and 5451729 for the waved switch type thermal circuit beraker that a kind of auto-cutout is provided.
General objects of the present invention is for a kind of thermal loop breaker switch is provided, this killer switch does not need a signal generator, and profile and function with a conventional waved switch, wherein this device also can carry out " auto-cutout " operation, even manually make it be in " connection " or make position so utilize, it will can not make each contact closed again, and it is overheated therefore this bimetallic to be produced.Although this bimetallic is arranged in this loop, when as a contact arm, the present invention still can avoid acting on the stress on this bimetallic element.Single contact is set and the actuator that opens circuit so that avoid acting on stress on this bimetallic, thereby improve the accuracy and the stability of operation.Although the present invention than use bimetallic as the embodiment of contact arm complicated slightly and slightly costliness a bit, it still hangs down than other the thermal loop breaker design and manufacture cost with structure that bimetallic and contact separate.
According to the present invention, a molded hollow shell that forms is set, this housing or integrally-built, or divide body structure, and have a diapire, and limit open top that is used for to accommodate rotatably around pivot a rocking bar or bat shape operating parts of formation.Thereby this enclosure interior has one limits the sidewall that at least one vertical guide rail receives a contact activated device movingly.Unitarily molded pod that forms rotatably receives and supports the actuator that opens circuit.This shell bottom wall is mounted with first and second terminals.This rocking bar comprises the extension or the auxiliary rod that protrude into described enclosure interior and engage with this contact activated device.Described rocking bar comprises that an engagement hook engages with convex extension part or bar on the contact activated device.This rocking bar has a molding part, and when this rocking bar was in " disconnection " position, this molding part had the surface of the motion that limits this contact activated device and rocking bar at least.One single compressed spring is biased into " disconnection " position with this rocking bar, and this actuator that opens circuit is biased into normal or reset position.
But an end of a moving conductive contact arm is fixedly mounted on the conductive mounting plate and is electrically connected on first terminals.The relative free end of another of this contact arm has a movable contact element, and upwards towards contact activated device bias voltage, is contained in fixedly contact element of one on second terminals thereby normally force described movable contact element to leave.
This contact activated device comprises each side direction projection that can slide in the vertical guide rail of described housing so that at least when described device as switch operation and when not have to work under the operating mode of overload, the motion of this rocking bar can make this movable contact arm move.
This actuator that opens circuit is L shaped, and has upright leg and horizontal leg, and the abutting end of those legs is fixedly connected.The junction of this L shaped actuator that opens circuit can be bearing in one rotatably around pivot and limit in the pod that forms in housing.This actuator that opens circuit has other surface, and this surface is at this actuator that opens circuit and resets or dock with this pod during " disconnection " position, thereby limits the rotation of this direction.This horizontal leg has the pin that protrudes out in the vertical channel that is housed within the housing, and this upright leg engages with described contact activated device by the interface on the contact activated device and the actuator that opens circuit.In response to overload current, bimetallic element motion engages with the horizontal leg of this actuator that opens circuit, and this actuator that opens circuit is rotated around pivot, and the upright leg of this actuator that opens circuit and this contact activated device are thrown off.Like this since in bimetallic element overcurrent/overheated, just allow the intrinsic bias voltage of this movable contact arm that each contact is opened.
This bimetallic element is a U-shaped, has two arms.The end of one arm is fixedly attached on first terminals, and the end of this relative arm preferably is fixedly attached on this contact arm by a conduction bonding jumper.This bimetallic element is electrically connected to these first terminals on this movable contact arm and its moving contact.The thermal response of this bimetallic element all changes on shape or curve shape, so that the abandoned free end heel of this U-shaped makes progress towards the horizontal leg bending of this actuator that opens circuit the scheduled current of the temperature rising of this bimetallic element in response to one.
The biasing device of single compressed form of springs is arranged between the upper end of upright leg of the downside of this rocking bar and this actuator that opens circuit.Therefore a single spring can be biased into this rocking bar its " disconnection " position, and this actuator that opens circuit is biased into the normal position that engages with this contact activated device under the situation that does not have overload.Even this rocking bar remains on " connection " position, the extension, bottom of this rocking bar can not make this contact activated device drive this movable contact arm and enter the contact closure state, and reason is that an end of this contact activated device is by being limited by engaging with this actuator that opens circuit.When this rocking bar did not remain on " connection " position between overcharge period, this spring bias forced described rocking bar towards the motion of " disconnection " position.When it no longer contacted with this actuator that opens circuit in case this bimetallic element carries out enough coolings, this spring made this actuator that opens circuit return to " resetting " position, so its upright leg can engage with this contact activated device.
By means of the reference following detailed description and in conjunction with can more fully understanding the present invention and its numerous advantage with reference to the accompanying drawings.Corresponding reference number in several accompanying drawings is represented corresponding parts, wherein:
Fig. 1 is the exploded view of inventive embodiments.
Fig. 2 is an independent cutaway view of this housing.
Fig. 3 is an independent perspective view of this contact activated device.
Fig. 4 is an independent perspective view of this rocking bar.
Fig. 5 is a vertical sectional view of the present invention, shows the rocking bar that is in " disconnection " position, and open each contact, and bimetallic element does not have bending.
Fig. 6 is one and is similar to the described vertical sectional view of Fig. 5, and shows the rocking bar that is transformed into " connection " position, and arrow is represented the direction of motion of each parts when conversion simultaneously.
Fig. 7 is one and is similar to the described vertical sectional view of Fig. 5, and shows this rocking bar is in " connection " position under the operating mode that does not have overload situation.
Fig. 8 is one and is similar to the described vertical sectional view of Fig. 5, and shows " auto-cutout " function that is in operation.When this rocking bar when manually remaining in " connection " position because the effect of an overload operating mode, this bimetallic element is crooked up.
Fig. 9 is a vertical sectional view that is similar to Fig. 8, and shows the situation of rocking bar towards the conversion of " disconnection " position, and arrow is represented the direction of motion of each parts in conversion simultaneously.
Figure 10 is a vertical sectional view of first alternative embodiment of the present invention.
Figure 11 is an independent perspective view of the used rocking bar of this first alternative embodiment.
Figure 12 is a vertical sectional view of second alternative embodiment of the present invention.
Figure 13 is the independent perspective view of the contact activated device used of this second alternative embodiment.
Figure 14 is an independent perspective view of the rocking bar used of this second alternative embodiment.
The label of each parts is as follows:
20, housing; 20a, axial hole; 20b, sidewall; 20c, vertical guide rail; 20d, pod; 20e, dividing plate; 20f, the housing retainer; 20h, the bottom of vertical guide rail element; 20i, diapire; 20j, vertical guide rail madial wall opening; 20k, the vertical guide rail lateral wall; 201, receptacle face; 22, rocking bar or operator; 22a, axially projection; 22b, the extension; 22c, the lower surface moving contact; 22d, the projection terminals of inwardly facing; 22e, the rocking bar retainer of " disconnection "; 22f, the rocking bar retainer of " connection "; 22g, the contact retainer; 22h, rocking bar position retainer; 22i, the actuator hook; 24, contact activated device; 24a, the guide rail projection; 24b, the actuator retainer; 24d, composition surface; 24e, " connection " position braking parts; 24f, groove; 24g, the surface resets; 24h protrudes out the surface; 24i, engaging lever; 26, actuator opens circuit; 26a, axially projection; 26b, horizontal leg; 26c, upright leg; 26d, retainer opens circuit; 26e protrudes out pin; 26f, stop surface; 28, fixed contact element; 30, moving contact; 32, the load wiring end; 32a, screw thread; 32b, the biasing part; 33, the neutral connection end; 34, terminals; 36, adjusting screw; 38, bimetallic element; 38a, arm; 38b, arm; 40, movable contact arm; 42, the compression spring; 52, the conduction bonding jumper.
In detail referring to each accompanying drawing, Fig. 1 represents so molded hollow shell 20 now, promptly this housing have one roughly rectangular and be used to accommodate the cavity that opens wide of following each parts up.One can be rotated rocking bar 22 or other operating parts installed around pivot and has the axle that extends laterally, and this has each the projection 22a among the axis hole 20a that is housed among this housing sidewall 20b.This housing sidewall 20b has the molded vertical guide rail 20c that forms, and is used for accommodating slidably the guide rail guiding projection 24a on the contact activated device 24, and pod 20d is used to be housed within an axial projection 26a who opens circuit on the actuator 26.Therefore the L shaped actuator 26 that opens circuit can be installed in this housing 20 rotatably around pivot.This pod 20d have with stop surface 26f against living the surface 201 of therefore limiting the rotation of this actuator 26 that opens circuit.In this housing, a Unitarily molded dividing plate 20e who forms makes terminal element 34 insulation, and this terminal element 34 has a fixed contact 28 on the end that is bearing in described terminal element 34.
One load wiring end and wiring terminals (being respectively 32 and 34) extend through each groove among this shell bottom wall 20i.This load wiring end 32 has a threaded openings 32a who accommodates an adjusting or adjusting screw 36.This load wiring end 32 extends up and links to each other with a bimetallic element 38 along a housing end wall 20g.This element 38 be as shown in Figure 1 U-shaped and have two arm 38a and 38b that are parallel to each other basically.This bimetallic element 38 is in the plane that is roughly parallel to this shell bottom wall 20i, and has such thermal response characteristics, so that under overcurrent situations, temperature rises and makes this bimetallic element towards these actuator 26 bendings of opening circuit.The end of this adjusting screw 36 contacts with the lower surface of this bimetallic element 38, thereby defines the normal configuration shape of this bimetallic element 38, and the deformation extent that this actuator 26 that opens circuit is opened circuit.
This U-shaped bimetallic element can make the end of an arm 38a be connected on the stiff end of a movable contact arm 40 by a conduction bonding jumper 52.Selectively, the arm 38a of a bimetallic element is directly connected on the stiff end of described movable contact arm 40.The arm 38b that another of this bimetallic element is relative is connected on the specific coupling part 32b of this load wiring end 32, so electric current can flow through this bimetallic element 38.This movable contact arm 40 is made of an elastic metallic material, and has a bias voltage and leave the fixing free end of contact element 28 up.Described free end has a movable contact element 30.Should be fixedly contact element 28 be installed on the wiring terminals 34, and be location like this so that acted on stressedly when downward by this contact activated device 24 when this movable contact arm 40, this movable contact element 30 utilizations are somebody's turn to do fixedly that contact element 28 makes a circuit closed.
This rocking bar or operating parts 22 can be installed among the housing axially open 20a rotatably around pivot, and are biased into by a spring 42 and the loop are disconnected or " disconnection " position.One Unitarily molded extension 22b that forms or auxiliary rod are arranged in the described rocking bar, and when this rocking bar 22 was in " connection " position, its direction was an approximate vertical.The surperficial 22c of this rocking bar extension constitutes one first coupling device, and this device when this rocking bar moves towards " connection " position, movably engages with the upper surface 24d of this contact activated device at least.Molded actuator hook 22i that forms in this rocking bar extension 22b, this is linked up with as one second coupling device, and at least when this rocking bar moves to " disconnection " position, and it can be dividually engages with an engaging lever 24i on this contact activated device.
This contact activated device 24 is arranged between the movable contact arm 40 and rocking bar 22 of bias voltage up.One actuator retainer 24b contacts retainer 22g contact with this at the lower surface place of this rocking bar, so that at least when this rocking bar is in " disconnections " position, limit moving upward of right-hand member (as shown in Figure 5).The effect of the bias voltage up of this surperficial 24h of being subjected to these contact arm 40 relative these contact activated devices of moving upward.This rocking bar 22 is biased into " disconnection " position by spring 42, and stops on suitable " disconnection " position by means of the contact action of rocking bar position retainer 22h and this housing vertical guide rail madial wall 20j.When " connection " position, the braking parts 24e in the top surface of this contact activated device 24 utilizes enough pressure to lock the surperficial 22c of this rocking bar, thereby the minimum spring bias that overcomes this rocking bar makes it to be in " disconnection " position.This rocking bar is locked at " connection " position, and stays in herein when the lateral wall 20k that the rocking bar retainer 22f of one " connection " is resisted against a vertical guide rail as shown in Figure 7 goes up.The left end of this contact activated device 24 (as shown in the figure) has rocking bar groove 24f, and this groove selectively engages with the retainer 26d that opens circuit that has groove of the actuator that opens circuit, so that realize described purpose.
This actuator 26 that opens circuit is L shaped, has level and vertical leg (being respectively 26b and 26c), and wherein this horizontal leg 26b is between movable contact arm 40 and this bimetallic element 38.The axial projection 26a that forms on this opens circuit actuator is bearing in this actuator that opens circuit by this housing and limits among the molded pod 20d that forms.The extension of the projection of described axial formation has constituted a stop surface 26f.This pod 20d has surface 201, and this surface 201 contacts with the stop surface 26f of this actuator that opens circuit when reset position shown in Figure 5, thereby limits the rotation of this actuator that opens circuit in this direction.The upright leg 26c of this actuator that opens circuit rises to one with on the groove 24f of this contact activated device carries out surperficial 26d that normal direction engages, thereby prevents the moving downward of groove end of this contact activated device.At least when this rocking bar 22 moved to " connection " position, this rocking bar lower surface 22c acted on the surperficial 24d of this contact activated device, thereby this contact activated device 24 roughly rotates around pivot, and this moment, it contacted with the surperficial 26d of this actuator that opens circuit.This turning effort of rotating around pivot is moved the right-hand member (as shown in the figure) of this contact activated device 24 down, and surperficial 24h drives this movable contact arm 40 down, thereby makes this contact element (28 and 30) closure.
When this actuator 26 that opens circuit rotates or when " opening circuit ", the surperficial 26d of this actuator 26 that opens circuit spins off from the groove 24f of this contact activated device around pivot because of a motion up of crossing thermo bimetal 38.So just eliminated pivot, so no matter how this rocking bar 22 moves, this contact activated device 24 can not drive this movable contact arm 40 down at above-mentioned groove end.One compression spring 42 is arranged between the downside of the top of upright leg 26c of the actuator that opens circuit and this rocking bar 22, and described rocking bar is biased into " disconnection " position.The direction of this spring 42 is to determine like this, promptly this elastic force vector always passes pivotal axis (roughly illustrating at the 26g place) inboard of this actuator that opens circuit slightly, therefore always not only this rocking bar is biased into " disconnection " position but also this actuator that opens circuit is biased into normally or reset position.
Fig. 5 represents that this rocking bar 22 is in " disconnection " position under the spring bias effect, and this actuator 26 that opens circuit is in " resetting " position, and the groove end of this contact activated device 24 contacts with the retainer 26d that opens circuit of described actuator.This actuator hook 22i can engage effectively with this engaging lever 24i, thereby guarantees the appropriate location of this contact activated device 24.The upwards bias voltage of this movable contact arm 40 promotes this contact activated device 24 up, up to this contact activated device and this rocking bar at surperficial 22g with till the 22c place contacts.
Fig. 6 illustrates the rocking bar 22 of invention and changes towards " connection " position under the pressure effect that is applied to this rocking bar left end portion (as shown in the figure).The rotation of this rocking bar makes lower surface 22c move through this contact activated device surface 24d, and when this lower surface was the pivot rotation with this groove end, direction was pushed this contact activated device down, and this groove end is held in place by this actuator 26d that opens circuit.Therefore this contact activated device 24 passes to this contact arm 40 at the 24h place with pressure down, and each contact element 28 and 30 is closed.
Fig. 7 shows at the described device that does not have to be under the overload situations position, closed-loop path.This rocking bar 22 is pressed into " connection " position fully, wherein this rocking bar extension lower surface 22c is in " connection " position, the braking parts 24e of this contact activated device 24 and described contact activated device make described movable contact arm 40 overcome its bias voltage and keep clamping, thereby each contact element (28 and 30) is connected.This rocking bar is limited in " connection " position by " connection " position retainer 22f that contacts with vertical guide rail lateral wall 20k.The bias voltage of this compression spring 42 is not enough to overcome the resistance of this rocking bar extension lower surface 22c among " connection " position braking parts 24e of this contact activated device 24.
Fig. 8 shows the device in the position of opening the loop during the overload operating mode, although rocking bar 22 is by manually remaining on " connection " position.During the overload operating mode, this device is subjected to the electric load effect greater than its coupling load, thereby bimetallic element 38 is heated and crooked and engage with the horizontal leg 26b of this actuator that opens circuit up.Such joint and this element 38 bias voltages own have overcome the slight bias voltage of this compression spring 42, and make this actuator that opens circuit around its axial projection 26a rotation, and this projection 26a is installed among this molded shell pod 20d.Therefore, the upright leg 26c of this actuator that opens circuit outwardly (counter-clockwise direction) rotate towards housing end wall 20g.This rotation disengages this respective grooves 24f that opens circuit actuator 26d and this contact activated device 24.Then, this groove end is towards falling up to till this movable contact arm 40 contacts.This contact activated device contacts with this movable contact arm with lower surface 24h place at this groove 24f.If the shape of this contact activated device and rocking bar can be improved from the shape shown in the figure, then the bias voltage of this movable contact arm 40 can drive this contact activated device towards the motion of this rocking bar, up at described lower surface 22c place by contacting or by surperficial 22g till limiting.This motion produces the plane of this contact activated device and moves, and " connection " position braking parts 24e of this contact activated device and the surperficial 22c of this rocking bar are thrown off.Fig. 8 shows the situation of " auto-cutout " operation, although wherein this rocking bar is forced to remain on " connection " position, each contact all is held open during the overcurrent operating mode.
Fig. 9 represents to transship the situation of rocking bar of the present invention when conversion after the operating mode.Compression spring 42 drives these rocking bars to " disconnections " position, and because the plane of foregoing contact activated device 24 produces mobilely, so this rocker surfaces 22c slides into surperficial 24d on this contact activated device from braking parts 24e.This rocker actuator hook 22i engages with engaging lever 24i, the groove end of this contact activated device is risen, thereby the retainer 26d that opens circuit that can guarantee its relative this actuator that opens circuit effectively is in suitable direction.This bimetallic element 38 is cooled to and returns to does not have crooked shape, this actuator 26 that opens circuit returns its reset position (clockwise direction as shown in the figure) rotation because of the bias effect of this compression spring 42, the surperficial 26d of this actuator that opens circuit moves under the surperficial 24f of this contact activated device, makes the present invention return to position shown in Figure 5.
Figure 10 shows an alternative embodiment, wherein housing 20 is improved, and makes it have a molded housing retainer 20f who forms, and this retainer plays the effect of rocking bar stop surface 22g and 22h among first embodiment.This housing retainer 20f is used to limit the motion up of the right-hand member (as shown in the figure) of this contact activated device 24, also is used as one " disconnection " position retainer of this rocking bar 20 in addition.The rocking bar that improvement is used for first alternative embodiment is illustrated in Figure 11 separately.
One second alternative embodiment has been shown among Figure 12, wherein rocking bar extension 22b has each projection 22d that faces inwardly as first coupling device, and at least when rocking bar moves to " connection " position, when with first embodiment in actuator link up with when relative, it contacts with the lower surface of this contact activated device.So just can guarantee this contact activated tank 24f this effectively location of actuating tank 26d realization of opening circuit relatively.In this second alternative embodiment, this contact activated device 24 does not comprise the rocking bar engaging lever, is particularly suitable for the surperficial 24g that resets that engages with complementary surface on this actuator that opens circuit but have.Figure 13 and 14 shows contact activated device and the rocking bar of having made to improve and be used for second alternative embodiment respectively.
Explanation and those features with reference role can all or part ofly be combined in herein in each feature of the various embodiments described above and the former series application, thereby obtain to be used for the various distortion of different purposes.Several joints of these features are illustrated in hereinafter, and can make better understanding with reference to this paper and each accompanying drawing disclosed specification.
Above-mentioned any one embodiment can be improved to and have the remote control checkout gear.A kind of improved form have fully with terminals 32 and 34 between the bimetallic element 38 that separates of switch loop, on each the arm 38a of this bimetallic element and 38b, have independently terminals simultaneously.Therefore this bimetallic element can be connected on the loop, thereby by means of being applied to this bimetallic element and this switch loop is opened from the overload current that a remote power supply comes.
One second remote sensing structure has a solid state sensor, in case the reading of detection limit specific voltage in this loop, perhaps alternatively, so that after this switch loop has been closed, detect the reading in the time limit scheduled time of an appointment.When the intended duration of described transducer was read, this sensor loop drove a solid-state switch loop electric current of one appropriate amount is flow through this bimetallic element 38 and ground connection.It is overheated that this electric current of shunting by bimetallic element ground connection will be enough to make this bimetallic element to produce, and therefore causes this bimetallic element to drive this actuator and open the contact 28 and 30 in this switch loop of opening circuit.Therefore, this bimetallic element not only provides normal current protection characteristic, thereby and influences the mechanism that opens of this switch connecting element as driving this shunting circuit when by this transducer guiding simultaneously.Depend on the programming of solid state sensor, although can detect many operating modes, the bimetallic element of this solid-state switch shunting earthing position is very important feature.The normal function of the overcurrent protection of this bimetallic element has been kept in this position.Can detect operating mode many conversion or combination, time for example, earth fault, voltage low or pulsation or the like with this transducer.
Replace this bimetallic element 38 with a replacement biasing device such as a solenoid and also be in the scope of the present invention, wherein a solenoidal iron core is provided with to such an extent that can apply active force on this opens circuit actuator 26, and this loop is opened.In having the improvement project of solid state sensor, this solenoid is arranged at the position of this bimetallic element, and as an alternative that drives this actuator that opens circuit.Replace this bimetallic element 38 with a solenoid and can cancel the needs of exchanging joint screw 36 and its screw 32a.
This solenoid also can be by the remote control broken circuit control that can be connected on the neutral connection end.
The combination of above-mentioned various distortion also is in the scope of the present invention.For example, utilization can not used this bimetallic element with a solid-state switch in a solid state sensor loop yet.This solid-state switch can be by a remotely monitored sensor circuit controls in this technical scheme, this remotely monitored sensor loop can apply a signal and give terminals, thereby drive this solid-state switch, make it that this bimetallic element ground connection is passed through in controlled current flow shunting, or become neutrality, therefore disconnect this mechanism, open this mechanical switch.
Another is the solenoid that a replacement has the bimetallic element of solid-state switch in conjunction with example.This solid-state switch is by a remotely monitored sensor circuit controls, and this remotely monitored sensor loop applies a signal makes it apply electric current to this solenoid to terminals so that drive this solid-state switch, therefore disconnects this mechanism, opens this mechanical switch.
Above-mentioned any embodiment or improvement also can be applicable in the bipolar or multipole thermal loop breaker switch, therefore by bimetallic element or the solenoidal single action of opening circuit the electrode of all uses are opened under any utmost point or multipole situation.This multipole function can be included in two or more thermal loop breaker switch loop of installing side by side in the housing.By means of using one to be used for the multipole single separation of opening circuit actuator or the connecting actuator that opens circuit can to influence this and open circuit in multipole in each electrode place, each separates the actuator that opens circuit and can couple together with a connecting pin or bar.
Under the instruction of content disclosed herein, improvement of the foregoing description and distortion are conspicuous to those skilled in the art, and wherein each example and alternative have been illustration, rather than play exclusive effect.The scope of following each claim has comprised these improvement and distortion that draw according to equivalence principle.
Claims (38)
1. device that had not only had circuit breaker but also had the circuit switching function, described device comprises:
A molded housing that forms, this housing constitute one and have the cavity that at least one constitutes the sidewall of a guide rail, and described housing also constitutes a pod that separates with described guide rail;
One fixed contact and a moving contact;
A contact arm, its stiff end are electrically connected to and are arranged on its free-ended described moving contact, and described contact arm is generally used for making described moving contact to be subjected to bias voltage to leave described fixed contact;
Contact activated device with at least one along the part that extends laterally, it is housed within the described guide rail of described housing sidewall slidably;
The switch operator that can manually control, has an extension that extends in the described cavity, described operating parts, can between " connection " and " disconnection " position, move, and have and make described contact activated device towards first coupling device of this " connection " position motion and second coupling device that described contact activated device is moved towards this " disconnections " position;
One actuator that opens circuit, be installed in the described pod movingly and have a upright leg, this upright leg closes with a termination of described contact activated device usually, when the described actuator that opens circuit is in the normal position, allow described operating parts and contact activated device carries out normal on-off action, make described contact arm close described contact and open between the position of described contact and move;
Comprise at one and to be used for the making described actuator that opens circuit shift out described normal operation position and to make the upright leg of the described actuator that opens circuit and thereby described contact activated device breaks away from and prevents that " connections " and " disconnections " motion described that described switch operator influences described contact arm from fixing the device that responds with the loop of moving contact, according to electrician's condition of being scheduled to.
2. install according to claim 1, it is characterized in that: the described actuator that opens circuit is shifted out its entopic described device comprise thereby respond according to predetermined electrician's condition: one with loop that described moving contact is connected in the elasticity bimetallic element, described bimetallic element has a part that produces distortion under the overcurrent operating mode because of heat effect, the described actuator that opens circuit has second leg that is arranged between described contact arm and the described bimetallic element, thereby described crushed element can be engaged with described second leg of the described actuator that opens circuit and it is carried out bias voltage, so that force the described actuator that opens circuit to shift out described normal position, described upright leg is broken away from.
3. as device as described in the claim 2, it is characterized in that: have at least two terminals that stretch out described housing, wherein said bimetallic element is a U-shaped roughly, and have a heel and first and second arms, first arm of described bimetallic element is electrically connected on the terminals, and described second arm is electrically connected on the described moving contact, and the described heel of described bimetallic element can produce strain because of heat effect under an overcurrent operating mode.
4. as device as described in the claim 3, it is characterized in that: this bimetallic element also comprises and is used for described bimetallic element is electrically connected to other terminals on other current sources.
5. as device as described in the claim 3, it is characterized in that: a solid state sensor and switch are connected on the neutral connection end from an end of this bimetallic element, so this solid state sensor can be controlled shunt current by making this bimetallic element ground connection.
6. as device as described in the claim 5, it is characterized in that: a solid-state switch is connected on the described neutral connection end from an end of this bimetallic element, and be connected on the signal terminal, therefore outside this housing, one sensor loop can signal to this solid state sensor, thereby produces shunting by this bimetallic element ground connection.
7. install according to claim 1, it is characterized in that: the described upright leg and the biasing device between the described switch operator that act on the described actuator that opens circuit under normal circumstances make described switch operator be returned to its " disconnection " position, and described biasing device also can move and forces the described actuator that opens circuit to enter in its pod.
8. as device as described in the claim 7, it is characterized in that: the described actuator that opens circuit is shifted out its entopic described device comprise thereby respond: a solenoid according to predetermined electrician's condition, this solenoid has the iron-core element that an energy extends according to an electrical input signal, and the described actuator that opens circuit has one and is arranged between described contact arm and the described solenoid component so that can be by second leg of described solenoid component joint when carrying out such extension.
9. as device as described in the claim 8, it is characterized in that: a solid state sensor and switch are connected on the neutral connection end from described solenoid component, so this solid state sensor can be by solenoid component ground connection control shunt current.
10. as device as described in the claim 9, it is characterized in that: described solid-state switch also comprises the other wiring link that is electrically connected on the remotely monitored sensor, so this remotely monitored sensor can give this solid-state switch signal of telecommunication, thereby applies electric current to solenoid.
11. install according to claim 1, it is characterized in that: also comprise at least one and described device other device arranged side by side, and the connection of opening circuit jointly between described each device, so that an athletic meeting of opening circuit actuator exerts an influence to the motion of at least one other actuator that opens circuit.
12., it is characterized in that as device as described in the claim 11: thus described open circuit jointly to connect comprise that one extends through the adjacent housings split shed and forms effective connecting rod that is connected with the described actuator that opens circuit.
13. as device as described in the claim 12, it is characterized in that: described connecting rod constitutes the pivot of the actuator that opens circuit in the described adjacent device case arranged side by side.
14. as device as described in the claim 11, it is characterized in that: the described connection of opening circuit jointly comprises the actuator that opens circuit, this actuator that opens circuit has the adjacent housings of extending through, and transmits the parts that rotatablely move of the described actuator component that opens circuit in described adjacent housings.
15. install according to claim 1, it is characterized in that: described contact activated device is comprised towards described second coupling device of " disconnection " position motion: at least one is at the hook on the described switch operator and at least one projection that also can engage with described hook on described contact activated device.
16. install according to claim 1, it is characterized in that: described second coupling device that described contact activated device is moved towards " disconnections " position comprises: at least one is on the described switch operator and the projection that extends under described contact activated device, described projection can with the lower surface engages of described contact activated device.
17. install according to claim 1, it is characterized in that: the described actuator that opens circuit comprises a projection, when the described actuator that opens circuit was in the normal position, this projection docked with described housing pod at least.
18. install according to claim 1, it is characterized in that: the described actuator that opens circuit comprises a pin that protrudes out that can be housed within the described housing guide rail, and when the described actuator that opens circuit was in the normal position, described pin contacted with the bottom of described guide rail at least.
19. a device that had not only had circuit breaker but also had the circuit switching function, described device comprises:
A molded housing that forms, this housing constitute one and have the cavity that at least one constitutes the sidewall of a guide rail, and described housing also constitutes a pod that separates with described guide rail;
One fixed contact and a moving contact;
A contact arm, its stiff end are electrically connected to and are arranged on its free-ended described moving contact, and described contact arm is generally used for making described moving contact to be subjected to bias voltage to leave described fixed contact;
Contact activated device with at least one along the part that extends laterally, it is housed within the described guide rail of described housing sidewall slidably;
One actuator that opens circuit, it is installed in the described pod movingly and has a upright leg, this upright leg closes with a termination of described contact activated device usually, when the described actuator that opens circuit is in the normal position, allows described operating parts and contact activated device to carry out normal on-off action and make described contact arm close described contact and open between the position of described contact and move;
The switch operator that can manually control, has an extension that extends in the described cavity, described operating parts, can move between " connection " and " disconnection " position, described operating parts has one and is in the surface that contacts with described contact activated device when " disconnection " position and this actuator that opens circuit are in the normal position when this switch operator at least;
Comprise at one and to be used for the making described actuator that opens circuit shift out described normal operation position and to make the upright leg of the described actuator that opens circuit and thereby described contact activated device breaks away from and prevents that " connections " and " disconnections " motion described that described switch operator influences described contact arm from fixing the device that responds with the loop of moving contact, according to electrician's condition of being scheduled to.
20. as device as described in the claim 19, it is characterized in that: this switch operator has a surface that contacts with described housing guide rail at least when described operating parts is in " disconnection " position.
21. as device as described in the claim 19, it is characterized in that: the described actuator that opens circuit is shifted out its entopic described device comprise thereby respond according to predetermined electrician's condition: one with loop that described moving contact is connected in the elasticity bimetallic element, described bimetallic element has a part that produces distortion under the overcurrent operating mode because of heat effect, the described actuator that opens circuit has second leg that is arranged between described contact arm and the described bimetallic element, thereby described crushed element can be engaged with described second leg of the described actuator that opens circuit and it is carried out bias voltage, so that force the described actuator that opens circuit to shift out described normal position, described upright leg is broken away from.
22. as device as described in the claim 21, it is characterized in that: have at least two terminals that stretch out described housing, wherein said bimetallic element is U-shaped substantially, and have a heel and first and second arms, first arm of described bimetallic element is electrically connected on the terminals, and described second arm is electrically connected on the described moving contact, and the described heel of described bimetallic element can produce strain because of heat effect under an overcurrent operating mode.
23. as device as described in the claim 22, it is characterized in that: this bimetallic element also comprises and is used for described bimetallic element is electrically connected to other terminals on other current sources.
24. as device as described in the claim 22, it is characterized in that: a solid state sensor and switch are connected on the neutral connection end from an end of this bimetallic element, so this solid state sensor can be controlled shunt current by this bimetallic element ground connection.
25. as device as described in the claim 24, it is characterized in that: a solid-state switch is connected on the described neutral connection end from an end of this bimetallic element, and be connected on the signal terminal, therefore outside this housing, one sensor loop can signal to this solid state sensor, thereby produces shunting by this bimetallic element ground connection.
26. as device as described in the claim 19, it is characterized in that: the described upright leg and the biasing device between the described switch operator that act on the described actuator that opens circuit make described switch operator be returned to its " disconnection " position usually, and described biasing device also can move and forces the described actuator that opens circuit to enter in its pod.
27. as device as described in the claim 26, it is characterized in that: the described actuator that opens circuit is shifted out its entopic described device comprise thereby respond: a solenoid according to predetermined electrician's condition, this solenoid has the iron-core element that an energy extends according to an electrical input signal, and the described actuator that opens circuit has one and is arranged between described contact arm and the described solenoid component so that can be by second leg of described solenoid component joint when carrying out such extension.
28. as device as described in the claim 27, it is characterized in that: a solid state sensor and switch are connected on the neutral connection end from described solenoid component, so this solid state sensor can be by solenoid component ground connection control shunt current.
29. as device as described in the claim 28, it is characterized in that: described solid-state switch also comprises the other wiring link that is electrically connected on the remotely monitored sensor, so this remotely monitored sensor can give this solid-state switch signal of telecommunication, thereby gives the solenoid supply of current.
30. as device as described in the claim 19, it is characterized in that: also comprise at least one and described device other device arranged side by side, and the connection of opening circuit jointly between described each device, so that an athletic meeting of opening circuit actuator exerts an influence to the motion of at least one other actuator that opens circuit.
31., it is characterized in that as device as described in the claim 30: thus described open circuit jointly to connect comprise that one extends through the adjacent housings split shed and forms effective connecting rod that is connected with the described actuator that opens circuit.
32. as device as described in the claim 31, it is characterized in that: described connecting rod constitutes the pivot of the actuator that opens circuit in the described adjacent device case arranged side by side.
33. as device as described in the claim 30, it is characterized in that: the described connection of opening circuit jointly comprises the actuator that opens circuit, this actuator that opens circuit has the adjacent housings of extending through, and transmits the parts that rotatablely move of the described actuator component that opens circuit in described adjacent housings.
34. as device as described in the claim 19, it is characterized in that: described switch operator has forces described contact activated device towards first coupling device of the position motion of closing described contact when the described actuator that opens circuit is in the normal position and second coupling device that forces described contact activated device to move towards the position that described each contact is opened.
35., it is characterized in that as device as described in the claim 34: described second coupling device comprise at least one in the hook on the described switch operator and at least one on described contact activated device and the projection that can engage with described hook.
36. as device as described in the claim 34, it is characterized in that: described second coupling device comprises at least one on described switch operator and the projection that extends below described contact activated device, described projection can with described contact activated device lower surface engages.
37. as device as described in the claim 19, it is characterized in that: the described actuator that opens circuit comprises a projection that docks with described housing pod at least when the described actuator that opens circuit is in the normal position.
38. as device as described in the claim 19, it is characterized in that: the described actuator that opens circuit comprises a pin that protrudes out that can be housed within the described housing guide rail, and described pin docks with the bottom of described guide rail when the described actuator that opens circuit is in the normal position at least.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/328,107 | 1999-06-08 | ||
| US09/328,107 US6094126A (en) | 1999-06-08 | 1999-06-08 | Thermal circuit breaker switch |
| US09/388,771 | 1999-09-02 | ||
| US09/388,771 US6154116A (en) | 1999-06-08 | 1999-09-02 | Thermal circuit breaker switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1276617A true CN1276617A (en) | 2000-12-13 |
Family
ID=26986224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00102249 Pending CN1276617A (en) | 1999-06-08 | 2000-02-18 | Thermal loop breaker switch |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1059653A3 (en) |
| JP (1) | JP2001006514A (en) |
| CN (1) | CN1276617A (en) |
| NO (1) | NO20002823L (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101558695B (en) * | 2006-11-10 | 2013-10-30 | 西门子工业公司 | Lighting control module contact arm & armature plate |
| CN110676118A (en) * | 2018-07-03 | 2020-01-10 | 易湘云 | Overheat damage type power-off method for switch |
| CN110676106A (en) * | 2018-07-03 | 2020-01-10 | 易湘云 | Overheating power-off method for switch and electric equipment |
| CN117629616A (en) * | 2024-01-26 | 2024-03-01 | 广东控银实业有限公司 | Rocker testing method and system |
| CN117629616B (en) * | 2024-01-26 | 2024-04-26 | 广东控银实业有限公司 | Rocker testing method and system |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6577221B1 (en) * | 2001-11-30 | 2003-06-10 | Ming-Shan Wang | Safety switch |
| JP4628201B2 (en) * | 2005-07-04 | 2011-02-09 | 游聰謀 | Electric circuit control protector |
| JP4628203B2 (en) * | 2005-07-05 | 2011-02-09 | 游聰謀 | Electric circuit control protector |
| JP2009032633A (en) * | 2007-07-30 | 2009-02-12 | Shuzo Kushida | Manual restoration type motor protector |
| JP2009059675A (en) * | 2007-08-30 | 2009-03-19 | Shuzo Kushida | Overload protecting device for electric apparatus |
| KR101056195B1 (en) | 2009-02-07 | 2011-08-12 | 주식회사 케이원 코퍼레이션 | Terminal interlocking structure of 2-pole bimetal switch |
| CN105390350B (en) * | 2015-12-08 | 2017-11-10 | 上海电科电器科技有限公司 | overload long delay protection mechanism |
| TWI692792B (en) * | 2019-01-15 | 2020-05-01 | 易湘雲 | Overheating protection method for power switch or electronic equipment |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE838920C (en) * | 1950-03-23 | 1952-05-15 | Cornelius Weise | Automatic switch with rocker arm actuation |
| DE2721162C2 (en) * | 1977-05-11 | 1982-04-08 | Ellenberger & Poensgen Gmbh, 8503 Altdorf | Overcurrent protection switch with on and off rocker switch |
| FR2516305A1 (en) * | 1981-11-06 | 1983-05-13 | Merlin Gerin | CONNECTION BREAKER WITH POWER CONTROL SUBSCRIBED BY A PILOT MODULE |
| IT8322533V0 (en) * | 1983-07-28 | 1983-07-28 | Bassani Spa | SMALL SINGLE POLE AUTOMATIC SWITCH. |
| ATE133003T1 (en) * | 1991-05-17 | 1996-01-15 | Siemens Ag | CIRCUIT CIRCUIT BREAKER WITH REMOTE RELEASE |
-
2000
- 2000-02-18 CN CN 00102249 patent/CN1276617A/en active Pending
- 2000-04-11 EP EP00107771A patent/EP1059653A3/en not_active Withdrawn
- 2000-06-02 NO NO20002823A patent/NO20002823L/en not_active Application Discontinuation
- 2000-06-08 JP JP2000172667A patent/JP2001006514A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101558695B (en) * | 2006-11-10 | 2013-10-30 | 西门子工业公司 | Lighting control module contact arm & armature plate |
| CN110676118A (en) * | 2018-07-03 | 2020-01-10 | 易湘云 | Overheat damage type power-off method for switch |
| CN110676106A (en) * | 2018-07-03 | 2020-01-10 | 易湘云 | Overheating power-off method for switch and electric equipment |
| CN110676106B (en) * | 2018-07-03 | 2021-11-02 | 易湘云 | Overheating power-off method for switch and electric equipment |
| CN110676118B (en) * | 2018-07-03 | 2021-11-02 | 易湘云 | Overheat damage type power-off method for switch |
| CN117629616A (en) * | 2024-01-26 | 2024-03-01 | 广东控银实业有限公司 | Rocker testing method and system |
| CN117629616B (en) * | 2024-01-26 | 2024-04-26 | 广东控银实业有限公司 | Rocker testing method and system |
Also Published As
| Publication number | Publication date |
|---|---|
| NO20002823L (en) | 2000-12-11 |
| NO20002823D0 (en) | 2000-06-02 |
| EP1059653A2 (en) | 2000-12-13 |
| EP1059653A3 (en) | 2002-01-23 |
| JP2001006514A (en) | 2001-01-12 |
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