EP2619784A1 - Miniatur-schutzschalter - Google Patents
Miniatur-schutzschalterInfo
- Publication number
- EP2619784A1 EP2619784A1 EP11716828.6A EP11716828A EP2619784A1 EP 2619784 A1 EP2619784 A1 EP 2619784A1 EP 11716828 A EP11716828 A EP 11716828A EP 2619784 A1 EP2619784 A1 EP 2619784A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- circuit breaker
- ptc resistor
- contact
- spring
- base
- 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
- 230000006835 compression Effects 0.000 claims abstract description 31
- 238000007906 compression Methods 0.000 claims abstract description 31
- 230000020169 heat generation Effects 0.000 claims description 2
- 239000011810 insulating material Substances 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 description 9
- 238000004804 winding Methods 0.000 description 9
- 238000003466 welding Methods 0.000 description 7
- 230000001960 triggered effect Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000003746 feather Anatomy 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003223 poly(pyromellitimide-1,4-diphenyl ether) Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/02—Details
- H01H37/60—Means for producing snap action
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/02—Details
- H01H37/32—Thermally-sensitive members
- H01H37/52—Thermally-sensitive members actuated due to deflection of bimetallic element
- H01H37/54—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/02—Details
- H01H37/32—Thermally-sensitive members
- H01H37/52—Thermally-sensitive members actuated due to deflection of bimetallic element
- H01H37/54—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting
- H01H37/5409—Bistable switches; Resetting means
-
- 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
- H01H71/14—Electrothermal mechanisms
- H01H71/16—Electrothermal mechanisms with bimetal element
-
- 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
- H01H71/14—Electrothermal mechanisms
- H01H71/16—Electrothermal mechanisms with bimetal element
- H01H71/164—Heating elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/02—Details
- H01H37/32—Thermally-sensitive members
- H01H37/52—Thermally-sensitive members actuated due to deflection of bimetallic element
- H01H37/54—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting
- H01H2037/5463—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting the bimetallic snap element forming part of switched circuit
Definitions
- the invention relates to a miniature circuit breaker for use in a motor vehicle electronics according to the preamble of claim 1.
- a miniature circuit breaker is known from DE 20 2009 010 473 U1.
- Miniature circuit breakers of this kind are increasingly replacing the flat-type fuses hitherto used as standard in the automotive sector. These are standardized with regard to their geometric dimensions.
- the relevant norm in Germany is DIN 72581-3.
- ISO 8820 is currently being prepared in this area. In the latter standard, three sizes are defined for the flat-type fuses, namely "Type C (medium)", “Type E (high current)” and "Type F (miniature)”.
- Circuit breakers of the abovementioned type usually comprise as tripping mechanism a bimetallic snap-action disc, which changes suddenly and reversibly between two curvature positions as a function of the temperature.
- the Bimetallschnappulation is firmly connected in a mounting point with a bimetallic contact.
- the remote from the attachment point free end of Bimetallschnappulation forms or carries a moving contact, which abuts a corresponding fixed contact, as long as the temperature prevailing in the circuit breaker temperature falls below a temperature threshold. In this case, an electrically conductive path between the bimetallic contact and the fixed contact is thus closed via the Bimetallschnappulation.
- a Type 1 (automatic reset) switch will open in the event of overcurrent and close again automatically without user intervention after a period of time - usually when the bimetal has cooled down again. With pending overcurrent, there is a cyclic opening and closing of the switch.
- a switch according to Type 2 (modified reset) remains open after an overcurrent tripping, as long as a minimum voltage is present. Until the final openning are some opening or
- a switch according to Type 3 (manual reset) is disconnected in the event of overcurrent and manual intervention, usually by means of a pushbutton, allows the circuit to be closed again. In the present case, it is in particular a type 2 circuit breaker.
- a heating resistor positioned at a distance from the bimetallic snap disk for example a positive temperature coefficient PTC resistor (positive temperature coefficient) is soldered to the contact arms in SMD (surface mounted device) technology .
- the Bimetallschnappulation is kept open by means of this electrically connected in parallel SMD or PTC resistor following an overcurrent trip (trigger case) by maintained in overload or short circuit on the heating resistor even after the release of the circuit breaker, a low current flow and thereby Heat loss generated in the heating resistor is used to heat the Bimetallschnappulation.
- a disadvantage of this construction with fixedly soldered PTC resistor is that so that a distance to the Bimetallschnappulation is practically unavoidable, so that the Bimetallschnappulation must be heated by means of air. It is therefore a high energy input required to maintain the temperature of the Bimetallschnappulation after an overcurrent release, to counteract a cooling below the return temperature and thus to prevent the Bimetallschnappulation snaps back and closes the circuit.
- the bimetal can be provided with a heating coil, wherein also this heating coil is electrically connected in parallel to the bimetal.
- the bimetal is held open following an overcurrent release of the bimetal by heating the winding, which gives off the heat to the bimetal. Since the winding rests against the bimetal, a good heat transfer is achieved. However, an electrical insulation between the bimetal and the winding must be ensured, for example in the form of a glass silk insulation or a film (eg Kapton), which, however, limits the heat transfer and requires a great deal of effort and makes it difficult in particular automated production.
- a glass silk insulation or a film eg Kapton
- the invention has for its object to provide a suitable for miniaturization, easy to produce and specify in terms of unwanted snap back snapping the bimetal snap especially reliable circuit breaker.
- a compression spring by means of the spring force of the PTC resistor is pressed inside the housing against the Bimetallschnappulation formed as a conical spring.
- the conical spring has a base-side spring end with a comparatively large spring diameter and a vertex-side spring end with a comparatively small spring diameter and is therefore also referred to below as a truncated cone spring.
- the truncated cone spring is suitably located on the contact arm with its base-side spring end inside the housing, while the crest-side spring end of the conical spring preferably rests centrally on the PTC resistor.
- the PTC Resistor preferably circular and this designed as a resistance disc or - platelets.
- the disk diameter of the PTC resistor is in turn suitably adapted to the comparatively large spring diameter of the conical spring and expediently at least approximately equal to the diameter thereof at the base-side spring end.
- This configuration allows on the one hand a particularly compact design of the spring and the resistor, which in turn requires a particularly small space requirement of these components within the miniature circuit breaker.
- this design and style allows the provision of a particularly effective pivot or tilt point in the system of the compression spring by their crest-side spring end rests with the small spring diameter there at the PTC resistor.
- the arrangement of these two components (compression spring) and PTC resistor) within the housing or the housing base is constructively chosen such that the compression spring engages in the region of the center of the PTC resistor at this.
- a diameter of the pressure or conical spring at the base end end of about 2mm and at the 4mm, a disc diameter of the PTC resistor of (4.2 ⁇ 0.1) mm and a disc thickness of the PTC resistor of (1, 05 ⁇ 0.06) mm proved to be particularly useful.
- the housing base has a pocket-like base contour, which is provided in a housing web running transversely to the contact arm.
- the compression spring is in the pocket-like base contour with its spring end facing this contact arm and is supported on both sides by the remaining contour half-shells of the base contour.
- the base contour and thereby the two contour half shells are dimensioned with respect to their dimensions such that the formed for performing the contact, in the longitudinal direction of upper and lower openings in terms of their width in the transverse direction are smaller than the largest diameter of the compression spring.
- the bimetallic snap-action disc is attached to the second contact arm at an attachment point which is longitudinally aligned with the two contacts (fixed contact and moving contact), the PTC resistor being arranged longitudinally between the attachment point and the contacts.
- This in turn allows in a simple manner a central system of the PTC resistor to the Bimetallschnappulation.
- this construction ensures reliable contacting of the PTC resistor via the compression spring with the first contact arm and the bimetallic disc with the second contact arm. When triggered, a current flow thus takes place via the PTC resistor, as a result of which it heats up.
- a temperature at the bimetallic disc in the amount of about 180 ° Celsius has been found to be necessary.
- a material is particularly useful for the PTC resistor that ensures a heating of the PTC resistor to a temperature of about 275 ° C as heat loss due to the current flowing through this resistor in the event of tripping current .
- Bimetallschnappulation a miniature circuit breaker with the help of a space-saving compression spring as possible, the Bimetallschnappulation in case of release undergoes sufficient heat input from the PTC resistor, so that an accidental snapping back of the bimetallic disc is reliably prevented.
- the design of the compression spring as a conical spring allows the minimization of the space required for this space by put together in the course of compression their spring coils.
- the height (block length) of the pressure or conical spring in the compressed state preferably be limited to twice the spring wire diameter by the spring delivere of the largest coil diameter at the base side Spring end of the cone spring is wrapped inwards.
- the miniature circuit breaker according to the invention can be reliably covered voltage ranges of, for example, 12V electrical system of a motor vehicle from about 1 1V to about 14.5V. Due to the full-surface and immediate installation of the PTC resistor to the bimetallic disc, caused or supported by the compression spring, it is ensured that at the comparatively low voltages, the energy is sufficient to hold the bimetallic disc in the open position.
- the miniature circuit breaker according to the invention also ensures that the usually required in the automotive field temperature range of -40 ° C to + 85 ° C is reliably covered.
- FIG. 1 is an exploded view of a circuit breaker with a housing formed from a housing base and a housing cover, two in the housing base partially embedded contact arms, a Bimetallschnappulation, a heating resistor (PTC resistor) and a truncated cone,
- PTC resistor heating resistor
- FIG. 2 is a perspective view of the circuit breaker of FIG. 1 in the assembled state with a closed housing
- FIG. 3 is a perspective view of the circuit breaker according to FIG. 1 in a partly assembled state with a truncated cone spring lying in the housing base, without PTC resistor and bimetallic snap-action disk, FIG.
- FIG. 4 is a perspective view of the circuit breaker of FIG. 1 in the partial assembly state of FIG. 3, but with PTC resistor,
- FIG. 5 is a perspective view of the circuit breaker according to FIG. 1 in the partially assembled state according to FIG. 4, but with the bimetal snap-action disk mounted, FIG.
- FIG. 7 in illustration of FIG. 6, the circuit breaker of FIG. 1 in a tripped state
- Fig. 8 the truncated cone spring in perspective view.
- the circuit breaker 1 comprises a housing 2, which is formed from a housing base 3 and a housing cover 4.
- the circuit breaker 1 further comprises a Fest.arm 5, a BimetallKINGarm 6 and a Bimetallschnappulation 7.
- the circuit breaker 1 also includes a fixed contact 8 in the form of a Welding plate, a moving contact 9 in the form of another Sch spaplätt- Chen and for fastening the Bimetallschnappulation 7 another rivet 10 and another welding plate 11th
- the housing base 3 and the housing cover 4 are made of electrical insulating material, namely a thermoplastic material.
- the one-piece housing cover 4 is pot-shaped or cap-shaped and thus encloses with five closed walls a volume which defines an interior 12 of the circuit breaker 1.
- the housing cover 4 can be snapped onto the housing base 3 with its open side.
- Fig. 2 shows the circuit breaker 1 with closed housing 2, d. H. with mounted on the housing base 3 housing cover. 4
- the contact arms 5 and 6 are bending-stamping parts made of sheet metal, in particular tinned brass, with a flat, rectangular cross-section.
- the housing base 3 of the Fest.arm 5 and the Bimetallkingarm 6 are positively embedded by the contact arms 5 and 6 are encapsulated with the material of the Gezzauesockels 3 in the manufacture of the circuit breaker 1.
- the contact arms 5 and 6 protrude on an underside 13 of the housing base 3, each with a plug contact 14 from the housing base 3 to the outside.
- the housing 2 and in particular the housing cover 4 have approximately the shape of a flat square with a (housing) narrow side 15 and a (housing) broadside 16.
- the contact arms 5 and 6 are so embedded in the housing base 3, that the plug contacts 14 are arranged parallel to each other and with respect to the housing narrow side 15 approximately centrally and at a distance from each other.
- the circuit breaker 1 is based on the standard ISO 8820 type F (miniature) with regard to its external geometric dimensions.
- the miniature circuit breaker 1 thus corresponds to the outside of a flat fuse of type F according to this standard, so that the circuit breaker 1 compatible with a socket for such Flachsteckêt, that is plugged into such, in the automotive field usual socket.
- the plug contacts 14 of the contact arms 5 and 6 are each arranged at the edge, while these are guided in the housing interior 12 respectively inwardly to the housing center, so that an inner end 17 of the Fest.arms 5 disposed over an inner end 18 of the Bimetallkingarms 6 is.
- the "top” here refers to the side of the circuit breaker 1 facing away from the housing base 3 and the plug contacts 14.
- the inner ends 17 and 18 of the contact arms 5 and 6 are, in particular 3 and 4 can be seen - in the direction of the housing broadside 16 centered with respect to a central longitudinal axis 19 (Fig. 3) of the housing 2 is arranged.
- the housing base 3 has in the transverse direction 21 extending a base 22 and two spaced apart in the longitudinal direction 20 extending base struts 23, 24 and another upper ends of these connecting, extending in the transverse direction 21 of the base traverse 25.
- the rivets 10 attached to the soft Bimetallschnappulation 7 by means of the welding plate 1 1 is welded.
- this formed by the rivet and welding pads attachment point 10, 1 1 and thus aligned with this in the longitudinal direction 20 of the fixed contact 8 is welded to the Fest.
- a receiving pocket socket contour 27 is formed, which is in the assembled state in the longitudinal direction 20 between the attachment point 10, 1 1 and the fixed contact 8, and which is penetrated by the fixed contact 5 in the longitudinal direction 20 (Fig. 3).
- two semi-circular base shells 27a and 27b are formed, wherein the distance - or the clear width - each other by the width of the Fest.arms 5 is determined.
- a compression spring 28 in the form of a conical spring referred to below as a conical spring with their base-side spring end 28 a In the assembled state is in the receiving pocket 27, a compression spring 28 in the form of a conical spring referred to below as a conical spring with their base-side spring end 28 a.
- the conical spring 28 is thus positionally positioned in the housing base 3 and kept sufficient at least for a simplified and reliable.
- the crest-side spring end 28b of the conical spring 28 lying opposite the base-side spring end 28a projects into the interior 12 of the circuit breaker 1 in the partial assembly step shown in FIG. 3 shows the relaxed state of the conical spring 28.
- Fig. 4 shows in a further partial assembly step, the use of a PTC resistor 29 - hereinafter simply referred to as resistance - within the circuit breaker 1 in the housing base 3.
- the resistor 29 is designed as a circular plate (resistance plate or resistor disc).
- the diameter of the plate-shaped or disk-shaped resistor 29 is in turn suitably adapted to the inside diameter (light width) receiving pocket and in this way is again pressed together when the conical spring 28 is compressed as a result of the lateral delimitation by means of the base pockets 27a, 27b. held exactly in the housing base 3.
- the conical spring 28 and the resistor 29 in the longitudinal direction 20 and preferably centered with the central axis 19 between the fixed contact 8 and the rivet 10 serving as a fastening point in the assembled state arranged on the contact arm 6 in alignment.
- FIGS. 5 to 7 shows the mounting state with bimetallic disk 7 arranged between the rivet 10 and the welding plate 11.
- the oval-shaped bimetallic disk 7 is centered with respect to its longitudinal extent with the central axis 19 (FIG. 5) and thus in the longitudinal direction 20 the circuit breaker 1 and its contact arms 5 and 6 aligned.
- the held by means of the rivet 10 and the welding plate 1 1 on the contact arm 6 end of the Bimetallschnappulation 7 forms their attachment point 10, 1 1 on the corresponding contact arm 6, while the opposite free end of the Bimetallschnappulation 7 carries the moving contact 9 (FIGS. 6 and 7).
- the conical spring 28 and the PTC resistor 29 are located between the attachment point 10, 11 of the bimetallic snap disk 7 and the contacts 8, 9. It can be seen that the PTC resistor 29 lies flat on and directly on the Bimetallschnappulation 7 on.
- the conical spring 28 rests with its base-side spring end 28a on the contact arm 5 of the fixed contact 8 and thereby in the receiving pocket 27 of the housing base 3 a. With the opposite vertex-side spring end 28b, the conical spring abuts the PTC resistor 29 as centrally as possible, where it forms a central tilting point 30.
- Bimetallschnappulation 7 of the moving contact 9 is under bias on the fixed contact 8 at an angle.
- an electrically conductive connection between the plug contacts 14 is made via the contact arms 5 and 6, the fixed contact 8, the moving contact 9 and the rivets 10.
- the circuit breaker 1 is thus electrically conductive in the normal state.
- the Bimetallschnappulation 7 is formed such that it changes its shape abruptly when its temperature exceeded a design-specific predetermined triggering temperature, for example, 1700 ° C tet. As a result of this change in shape lifts the moving contact 9 from the fixed contact 8, so that the existing between the fixed contact 5 and the Bimetallmindarm 6 electrical connection is disconnected.
- a design-specific predetermined triggering temperature for example, 1700 ° C tet.
- a non-linear ceramic-type PTC resistor is used for the PTC resistor 29 . This heats up as a result of the current flow and limits the current to about 100mA. This corresponds to only about a third to a quarter of that current that is required in the known solutions.
- due to the non-linearity of the resistor 29 results in a relatively low relationship between the applied voltage and the power output. For the priority application in the electrical system of a motor vehicle, the output temperature and thus the power remain relatively constant over the entire usual voltage range of about 1 1V to 14.5V. This is a particular advantage to which the benefit of reduced power output is added.
- a PTC resistor 29 is selected with a surface temperature of 275 ° C, which differs from the standard and appears for this type of PTC resistor as an upper limit.
- the surface temperature of such, used for heating PTC resistors is a maximum of 250 ° C. Since the PTC resistor 29 rests flatly and directly on the Bimetallschnappulation 7 and this is pressed for good heat transfer with a certain biasing force against the Bimetallschnappulation 7, both a particularly good heat transfer and a sufficient current flow through the PTC resistor 29 is possible.
- the PTC resistor 29 remains movable by the conical spring 28, the resistor 29 is not a large area, but in the region of the tilting point 30 and thus on the thereby small contact area rather in the middle Contacted area.
- the pressing force of the conical spring 28 is dimensioned such that the preferably disc-shaped PTC resistor 29 on the one hand rests well on the Bimetallschnappulation 7 and on the other hand does not adversely affect their snap behavior.
- the compression spring 28 is designed such that it can be compressed as completely as possible. In this way, the fact is taken into account that for positioning and placement of the compression spring 28 in the circuit breaker 1 and there between the Festuttonarm 5 and the Bimetallschnappulation 7 only very little space is available, which is also already partially required by the PTC resistor 29. Therefore, a compression spring 28 with conical spring body and thus in turn the use of a conical spring (conical spring) particular That's advantageous.
- the conical spring body is formed by continuously changing the coil diameter during the winding of the spring wire.
- Such a preferred conical spring 28 is shown in Fig.8.
- the turns or windings of the conical spring 28 are changed from turn to turn in spring longitudinal or axial direction, that the windings during compression of the conical spring 28 can slide into each other.
- the spring-free end 28c is suitably bent inwards on the base-side spring end 28a such that when the conical spring 28 is compressed, its spring height (block length) corresponds to practically only twice the spring wire thickness.
- the largest diameter D b of the conical spring 28 at its base-side spring end 28 a is approximately 4 mm and corresponds at least approximately to the diameter of the PTC resistor 29 with (4.2 ⁇ 0.1) mm.
- the conical spring 28 bears against the fixed contact arm 8, while the smallest coil diameter D s at the vertex-side spring end 28 b of the conical spring 28 contacts the PTC resistor 29. This remains movable by the only central contacting to form the tilting point 30 so that the resistor 29 can advantageously adapt to the movement of the Bimetallschnappulation 7.
- the thickness of the PTC resistor 29 is dimensioned such that it contacts both in the closed position of the circuit breaker 1 (FIG. 6), as well as in the tripping or OFF position of the Bimetallschnappulation 7 (Fig. 7), without the lateral storage take out the receiving pocket 27
- this design feature of providing the laterally supporting base shells 27a, 27b that different tolerances are to be expected due to differently shaped bimetallic snap disks 7 at different current intensities.
- the structural design of the conical spring 28 also ensures that it does not go to block even in the compressed state (FIG. 6) and as a result the PTC resistor 29 remains movable and does not impair the snap-action bimetal 7 in its snap action.
- a slice thickness of the PTC resistor 29 of (1, 05 ⁇ 0.06) mm has been found to be optimal.
- the disk diameter of the PTC resistor 29 is preferably (4.2 ⁇ 0.1) mm.
- the operating voltage at the PTC resistor 29 is now applied and the current flows from the fixed contact arm 5 via the conical spring 28 to the PTC resistor 29 and from Due to the configuration and arrangement of the resistor 29 and the compression spring 28 and in particular the direct contact of the resistor 29 on the Bimetallschnappulation 7 is due to the current flow sufficiently large Heat input into the Bimetallschnappulation 7 ensured, so that this remains above the snap-back temperature. This state is maintained until the voltage drops below a certain value (normal case) or completely drops to zero.
- the current determined during the maintenance of the snap-back temperature by the resistance value of the PTC resistor 29 (about 100 mA) is comparatively low.
- the invention accordingly relates to a miniature circuit breaker 1 for the preferred use in a motor vehicle electronics, with a housing base 3, from which a fixed contact arm 5 and a BimetallWalletarm 6 attached thereto a Be wegtern 9 and a Bimetallschnappulation 7 are led out, wherein a PTC resistor 29 brought by a compression spring 28 in direct contact with the Bimetallschnappulation 7 and electrically connected so that as a result of its heat generation Bimetallschnappulation 7 remains in the open position in the event of release.
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Thermally Actuated Switches (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL11716828T PL2619784T3 (pl) | 2010-09-24 | 2011-04-12 | Miniaturowy wyłącznik ochronny |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202010013526 | 2010-09-24 | ||
PCT/EP2011/001809 WO2012037991A1 (de) | 2010-09-24 | 2011-04-12 | Miniatur-schutzschalter |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2619784A1 true EP2619784A1 (de) | 2013-07-31 |
EP2619784B1 EP2619784B1 (de) | 2015-03-18 |
Family
ID=44477639
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11716828.6A Active EP2619784B1 (de) | 2010-09-24 | 2011-04-12 | Miniatur-schutzschalter |
Country Status (12)
Country | Link |
---|---|
US (2) | US10580600B2 (de) |
EP (1) | EP2619784B1 (de) |
JP (1) | JP5728092B2 (de) |
KR (1) | KR101546277B1 (de) |
CN (1) | CN103081051B (de) |
CA (1) | CA2812451C (de) |
DE (1) | DE202011110510U1 (de) |
ES (1) | ES2536960T3 (de) |
PL (1) | PL2619784T3 (de) |
RU (1) | RU2553280C2 (de) |
SG (1) | SG188299A1 (de) |
WO (1) | WO2012037991A1 (de) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2770521B1 (de) * | 2013-02-20 | 2015-10-28 | Siemens Aktiengesellschaft | Thermomagnetische Auslöseeinheit für einen Schutzschalter und Schutzschalter |
DE202014010782U1 (de) | 2014-03-21 | 2016-08-16 | Ellenberger & Poensgen Gmbh | Thermischer Schutzschalter |
US10907638B2 (en) | 2015-07-27 | 2021-02-02 | Wayne/Scott Fetzer Company | Multi-outlet utility pump |
USD823345S1 (en) | 2015-12-17 | 2018-07-17 | Wayne/Scott Fetzer Company | Pump |
WO2017217003A1 (ja) * | 2016-06-14 | 2017-12-21 | 大塚テクノ株式会社 | 携帯機器用のマイクロブレーカ及び携帯機器用のマイクロブレーカの製造方法 |
JP6967878B2 (ja) * | 2017-06-01 | 2021-11-17 | ボーンズ株式会社 | ブレーカー及びそれを備えた安全回路。 |
US11326608B2 (en) * | 2017-08-14 | 2022-05-10 | Wayne/Scott Fetzer Company | Thermally controlled utility pump and methods relating to same |
USD910719S1 (en) | 2018-07-12 | 2021-02-16 | Wayne/Scott Fetzer Company | Pump components |
TWI785260B (zh) * | 2019-07-26 | 2022-12-01 | 富致科技股份有限公司 | 過電流保護裝置 |
US10796872B1 (en) * | 2019-09-01 | 2020-10-06 | Kuoyuh W.L. Enterprise Co., Ltd. | Vehicle circuit breaker |
US11592033B2 (en) | 2019-09-30 | 2023-02-28 | Wayne/Scott Fetzer Company | Pump assembly and related methods |
USD942512S1 (en) | 2020-09-29 | 2022-02-01 | Wayne/Scott Fetzer Company | Pump part |
US12191098B2 (en) * | 2021-09-24 | 2025-01-07 | MP Hollywood | Switch with integral overcurrent protection |
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- 2011-04-12 WO PCT/EP2011/001809 patent/WO2012037991A1/de active Application Filing
- 2011-04-12 CA CA2812451A patent/CA2812451C/en active Active
- 2011-04-12 RU RU2013118692/07A patent/RU2553280C2/ru active
- 2011-04-12 CN CN201180041153.5A patent/CN103081051B/zh active Active
- 2011-04-12 SG SG2013014030A patent/SG188299A1/en unknown
- 2011-04-12 EP EP11716828.6A patent/EP2619784B1/de active Active
- 2011-04-12 ES ES11716828.6T patent/ES2536960T3/es active Active
- 2011-04-12 JP JP2013529556A patent/JP5728092B2/ja active Active
- 2011-04-12 PL PL11716828T patent/PL2619784T3/pl unknown
- 2011-04-12 DE DE202011110510.9U patent/DE202011110510U1/de not_active Expired - Lifetime
- 2011-04-12 KR KR1020137010229A patent/KR101546277B1/ko active Active
-
2013
- 2013-03-25 US US13/849,745 patent/US10580600B2/en active Active
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2018
- 2018-10-03 US US16/150,770 patent/US10600597B2/en active Active
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Title |
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Also Published As
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RU2553280C2 (ru) | 2015-06-10 |
US20130214895A1 (en) | 2013-08-22 |
ES2536960T3 (es) | 2015-06-01 |
EP2619784B1 (de) | 2015-03-18 |
US10580600B2 (en) | 2020-03-03 |
DE202011110510U1 (de) | 2014-05-27 |
JP5728092B2 (ja) | 2015-06-03 |
CA2812451A1 (en) | 2012-03-29 |
KR101546277B1 (ko) | 2015-08-21 |
WO2012037991A1 (de) | 2012-03-29 |
KR20130103536A (ko) | 2013-09-23 |
CA2812451C (en) | 2019-01-15 |
US10600597B2 (en) | 2020-03-24 |
JP2013538004A (ja) | 2013-10-07 |
CN103081051A (zh) | 2013-05-01 |
RU2013118692A (ru) | 2014-10-27 |
US20190035582A1 (en) | 2019-01-31 |
SG188299A1 (en) | 2013-04-30 |
PL2619784T3 (pl) | 2015-08-31 |
CN103081051B (zh) | 2015-12-16 |
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