EP0962024A1 - Thermische schalteinrichtung, insbesondere bimetallgesteuerter temperaturregler - Google Patents
Thermische schalteinrichtung, insbesondere bimetallgesteuerter temperaturreglerInfo
- Publication number
- EP0962024A1 EP0962024A1 EP98912220A EP98912220A EP0962024A1 EP 0962024 A1 EP0962024 A1 EP 0962024A1 EP 98912220 A EP98912220 A EP 98912220A EP 98912220 A EP98912220 A EP 98912220A EP 0962024 A1 EP0962024 A1 EP 0962024A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- switching device
- thermal switching
- recess
- contact
- projection
- 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
- 230000005540 biological transmission Effects 0.000 claims abstract description 11
- 238000002844 melting Methods 0.000 claims description 13
- 230000008018 melting Effects 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims 4
- 230000037431 insertion Effects 0.000 claims 4
- GNFTZDOKVXKIBK-UHFFFAOYSA-N 3-(2-methoxyethoxy)benzohydrazide Chemical compound COCCOC1=CC=CC(C(=O)NN)=C1 GNFTZDOKVXKIBK-UHFFFAOYSA-N 0.000 claims 2
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 claims 1
- 238000003825 pressing Methods 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000006187 pill Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 229910000679 solder Inorganic materials 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
- H01H37/32—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
- H01H37/74—Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
- H01H37/76—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material
-
- 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
- H01H2037/549—Details of movement transmission between bimetallic snap element and contact
Definitions
- Thermal switching device in particular bimetal-controlled
- the invention relates to a thermal switching device, in particular a bimetal-controlled temperature controller, temperature limiter or the like. With the further features of the preamble of patent claim 1.
- a temperature fuse for electrical devices which has a housing with a recess.
- a thermally sensitive element is arranged in the lower region of this recess.
- a contact path is provided over the recess, which has a movement contact and a fixed contact. The contact path is effective between two connection contacts arranged on the housing.
- a transmission element is also provided, which transmits the movement of the thermally sensitive element to the movement contact of the contact path.
- the housing of the known switching device is complicated in that the transmission element is designed in its longitudinal direction as a displaceable pin which is guided under the movement contact of the contact path.
- the guide means complicate the housing.
- the assembly of the known thermal switching device is relatively complicated.
- the invention has for its object to develop a thermal switching device with the features of the preamble of claim 1 such that the housing is simpler and the thermal switching device can be assembled, in particular from one side of the housing.
- This object is achieved by the characterizing features of patent claim 1.
- Advantageous further developments of the thermal switching device result from subclaims 2 to 30.
- Claims 31 to 34 relate to advantageous procedures when assembling such a thermal switching device.
- a transmission element within the recess which is designed like a pivot lever mounted on one side.
- the pivoting lever is supported on one side, i.e. off-center and thus in the area of one of the walls of the recess. This means that the recess on its upper side facing the contact path is not blocked with guide elements or the like, so that thermally sensitive elements can be easily inserted from above into the lower region of the recess.
- the swivel lever can also be inserted from above without any problems. Apart from the pivot bearing on the edge of the recess, no further guide elements narrowing the recess are required.
- the pivot lever can be fixed in the mounting that holds it and for additional fixing of the thermally sensitive element
- the pivot lever is spring-loaded in the upper region of the recess by a spring element separately from the load of the movement contact against the thermally sensitive element.
- the spring load can be adjusted or selected depending on the type of spring element, so that the spring force of the movement contact can be selected independently of it.
- the pivot lever If the pivot lever is mounted on the upper edge of the recess, it can be inserted in a corresponding bearing recess in a simple manner with a bearing transverse axis. This can be done by maten be carried out without the need for complicated handling.
- the pivot axis of the pivot lever extends approximately at right angles to the longitudinal direction of the contact path.
- the pivot lever has a T-shaped widening at its first end in the manner of an axis, which lies in a corresponding bearing recess at the upper edge of the recess. In the final assembly state, this pivot axis is fixed by the root of the movement contact in the bearing recess, so that separate fixing elements for the pivot lever are no longer required.
- the separate spring element which presses the pivoting lever in the direction of the thermally sensitive element, is a separate spring tongue cut free in the area of the movement contact, which extends to the root area of the movement contact and can thus work completely independently of the spring movement of the movement contact.
- the spring tongue acts on an upper, third projection of the pivot lever.
- An upper, fourth projection is provided on the swivel lever, which has approximately the same radial distance from the swivel axis as the lower first projection and which can serve as a swivel lock, for which purpose further elements which fix the upper, fourth projection in the locked position can be provided not described in detail in the context of this application.
- a fifth, lateral projection, protruding from its free pivoting end, is provided on the pivoting lever, which protrudes under the fixed contact.
- This fifth separate projection makes it possible to adjust the fixed contact by bending with respect to the movement contact via the swivel lever.
- the root of the movement contact is covered by a U-shaped connection contact element in the final assembly state.
- This U-shaped connection contact element is placed over the movement contact with the free U-legs and fastened to the housing with the ends of the U-legs, which can be done, for example, by crossing or bending the legs.
- the root of the movement contact is somewhat wider than the inner clear width of the U-shaped connection contact element.
- the root of the movement contact is squeezed into the U interspace of the connection contact element and is thus in intimate electrical contact with the connection contact element with the side edges of the movement contact.
- This contact is independent of the contact pressure of the plastic housing, which is exerted on the underside of the movement contact.
- the upper, second projection of the pivot lever is designed in the manner of a T-shaped widening. This upper, second projection serves to act upon the movement contact, which is thus acted upon over a large area from below.
- the sub-claims 16 and 17 deal with the location and the formation of the different projections of the transmission element.
- the thermally sensitive element is a bimetallic snap disk, between which and the pivoting lever a bistable steel disk can be arranged in order to hold the switch in the off position when the bimetal snap disk responds.
- the bimetallic disc is in intimate thermal contact with a surface on which the thermal switching device can be tiert. If the bimetallic disc bulges downwards, it connects directly to the mounting surface, so that the response times of the thermal switching device are correspondingly short.
- a guide web for, for example, a thermal melting pill or an insulating pin, which interacts with a bimetallic snap disk, can be inserted into the bearing recesses.
- the automatic assembly is further simplified.
- the two bearing troughs which are designed to insert the pivot axis of the pivot lever, then lie in the trench-like depressions, since the contact elements contribute to fixing the pivot lever in position.
- the thermally sensitive element can alternatively also be a melting element which is attached to the underside of the swivel lever or forms the underside of the swivel lever.
- a melting pill is conceivable here, as is provided for example in DE 28 26 205 C2. The melting pill serves to support the swivel lever upwards, which then keeps the contact path closed in the supported position. As soon as the melting pill has responded, the contacts open so that the thermal switching device works as a fuse.
- Fig. 1 shows a section through a trained as a temperature controller
- FIG. 2 shows a top view of a temperature controller according to FIG. 1;
- FIG. 3 shows a section through a switching device designed as a temperature limiter
- Fig. 4 is a plan view of a temperature limiter according to
- FIG. 5 shows a section through a thermal switching device designed as a temperature fuse
- Fig. 6 is a plan view of a temperature fuse according to
- FIG. 7 shows a section through a thermal switching device designed as an alternative temperature fuse
- Fig. 8 is a plan view of a temperature fuse according to
- a housing 1 and 2 initially has a housing 1, in which a recess 2 is arranged.
- the Assumption 2 is a thermally sensitive element in the form of a bimetallic snap disk 4 which is held on the edge by support elements of the housing 1.
- a contact path 6 is arranged, which has a movement contact 7 and a fixed contact 8. The contact path 6 is effective between two connection contacts 9, 10 attached to the housing 1.
- a transmission element 11 is clamped, which is designed as a one-sided pivot lever 12 which acts on the top of the bimetallic snap disk 4 with a lower, first projection 13 and the movement contact 7 with an upper, second projection 14.
- the pivot lever 12 is separated by a spring element 15 and detached from the load of the movement contact 7 against the thermally sensitive element, namely the bimetallic snap disk 4.
- the separate spring element 15 is a spring tongue cut free in the surface of the movement contact 7, as can be seen particularly clearly from FIG. 2. This presses on an upper, third projection 16 of the pivot lever 12.
- the pivot lever 12 itself is mounted on the upper edge 17 of the recess 2, for which purpose a trough-like bearing recess 18 is provided, in which an integrally formed pivot axis 19 of the pivot lever 12 lies.
- the swivel axis 19 of the swivel lever 12 runs approximately at right angles to the longitudinal direction of extension of the contact section 6.
- the pivot axis 19 is fixed in the bearing trough 18 by the root 20 of the movement contact 7.
- An upper, fourth projection 21 is then provided on the pivot lever 12, which projection is approximately the same radial distance from the pivot axis 19. has, like the lower, first projection 13.
- the upper, fourth projection 21 is a swing-back lock or is used to directly act on or actuate the pivot lever 12 from the outside.
- the root 20 of the movement contact 7 is covered by a U-shaped section of the connection contact 9, the root 20 of the movement contact 7 being somewhat wider than the inside clear width of the U-shaped connection contact 9.
- the upper, second projection 14 to act on the movement contact 7 is formed from below in the manner of a T-shaped widening of the pivot lever 12, the widening having approximately the width of the movement contact 7 in the area acted upon.
- the lower, first projection 13 is arranged approximately in the region of the central longitudinal axis 23 of the recess 2.
- the upper, second projection 14 extends beyond the central longitudinal axis 23 of the recess 2 with respect to the pivot axis 19.
- the upper, third projection 16 lies between the central longitudinal axis 23 of the recess 2 and the pivot axis 19.
- a bistably bulging steel disk 30 is arranged between the bimetallic snap disk 4 and the pivoting lever 12, which is held and fixed at the edges.
- the housing 1 is provided with a housing cover 31, in which a guide 32 is provided, in which an actuating element 33 is mounted, which is manually operated from the outside can be actuated and presses on the fourth projection 21 in order to push the steel disk 30 back into its downwardly curved position after it has arched upwards as a result of a through movement of the bimetallic snap disk 4.
- the steel disk 30 is fixed upward by holding elements 34 which protrude downward from the housing cover 31 and are formed in one piece therewith.
- FIGS. 2, 4 and 6 further show that trench-like depressions 40 are provided for receiving the connecting contacts 9, 10 and the moving contact 7 and the fixed contact 8, said recesses 40 extending in housing projections 41 which are diametrically opposed to the recess 2 protruding central region of the housing 1 protrude.
- Fixing pins 45 are formed on the bottom of the two trench-like depressions 40 and are immersed in fixing recesses 46 of contacts 7, 8 or connecting contacts 9, 10.
- the thermally sensitive element is a melting element 50 which is attached or arranged at the lower end of the pivot lever 12.
- the melting element 50 is formed by a plastic connection that partially forms the pivot lever 12. 5, the melting element 50 lies on a heat transfer plate 55, which closes the underside of the recess 2.
- the contact arrangement in FIGS. 5 and 6 is also different from the embodiments according to FIGS. 1-4, since the movement contact 7 acts on the fixed contact 8 from below under the spreading pressure of the pivot lever 12. As soon as the melting element 50 has given in as a result of a thermal response, the pivot lever 12 drops and opens the contact path 6.
- the temperature fuse shown in FIGS. 7 and 8 has a guide web 60 which is inserted into the bearing troughs 18.
- the guide bar 60 holds an insulating pin 61 in its center, which immerses in the solder 62 when it is liquefied.
- the movement contact 7, which is under pretensioning force in the direction of the insulating pin 61 follows the immersion movement of the insulating pin 61 and thus opens the contact path 6.
- a bimetal snap disk is provided instead of the fusible link 62, which interacts with the insulating pin 61. A snapping of the bimetallic snap disk again leads to the contact opening.
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Thermally Actuated Switches (AREA)
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19706316 | 1997-02-18 | ||
| DE19706316A DE19706316C2 (de) | 1997-02-18 | 1997-02-18 | Thermische Schalteinrichtung, sowie Verfahren zu dessen Herstellung |
| PCT/DE1998/000423 WO1998037565A1 (de) | 1997-02-18 | 1998-02-14 | Thermische schalteinrichtung, insbesondere bimetallgesteuerter temperaturregler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0962024A1 true EP0962024A1 (de) | 1999-12-08 |
| EP0962024B1 EP0962024B1 (de) | 2002-10-23 |
Family
ID=7820681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98912220A Expired - Lifetime EP0962024B1 (de) | 1997-02-18 | 1998-02-14 | Thermische schalteinrichtung, insbesondere bimetallgesteuerter temperaturregler |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0962024B1 (de) |
| AT (1) | ATE226754T1 (de) |
| DE (1) | DE19706316C2 (de) |
| WO (1) | WO1998037565A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113921332A (zh) * | 2021-10-11 | 2022-01-11 | 麦柯泰姆电子技术(上海)有限公司 | 一种温度开关及其装配方法 |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2382465B (en) * | 2001-11-14 | 2005-07-13 | Otter Controls Ltd | Improvements relating to thermally-responsive switches |
| DE102013113650A1 (de) | 2013-12-06 | 2015-06-11 | INTER CONTROL Hermann Köhler Elektrik GmbH & Co KG | Thermische Schalteinrichtung, Heizungsanordnung sowie Verfahren zur Montage einer thermischen Schalteinrichtung an einer Heizungseinrichtung |
| DE202014101728U1 (de) | 2014-04-11 | 2014-04-29 | INTER CONTROL Hermann Köhler Elektrik GmbH & Co KG | Thermische Schalteinrichtung |
| DE202014101769U1 (de) * | 2014-04-15 | 2015-07-17 | INTER CONTROL Hermann Köhler Elektrik GmbH & Co KG | Thermisches Schaltelement sowie Kontaktelement |
| DE102015226207A1 (de) * | 2015-12-21 | 2017-06-22 | Robert Bosch Gmbh | Elektrische Maschine |
| DE202016104274U1 (de) | 2016-08-04 | 2017-11-08 | INTER CONTROL Hermann Köhler Elektrik GmbH & Co KG | Thermische Schalteinrichtung |
| DE202021106279U1 (de) | 2021-11-17 | 2023-02-20 | INTER CONTROL Hermann Köhler Elektrik GmbH & Co., KG | Thermische Schalteinrichtung sowie Heizeinrichtung |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1217128A (fr) * | 1958-12-01 | 1960-05-02 | Cotherm Sa | Dispositifs de sécurité pour interrupteurs thermostatiques |
| US2954447A (en) * | 1958-12-18 | 1960-09-27 | Therm O Disc Inc | Thermostatic switch |
| DE1189616B (de) * | 1961-12-15 | 1965-03-25 | Licentia Gmbh | Bimetall-Schnappschalter, insbesondere Anlassrelais fuer Einphasen-Induktionsmotoren |
| DE1590611A1 (de) * | 1962-10-22 | 1970-05-14 | Essex International Inc | Thermostat |
| US3818410A (en) * | 1973-03-02 | 1974-06-18 | Fasco Industries | High voltage thermostat |
| US4020442A (en) * | 1974-03-08 | 1977-04-26 | Hochiki Corporation | Composite-type heat-system fire sensing device |
| DE7817937U1 (de) * | 1978-06-15 | 1987-08-20 | Inter Control Hermann Köhler Elektrik GmbH & Co KG, 8500 Nürnberg | Temperatursicherung für elektrische Geräte |
| DE3304126C2 (de) * | 1983-02-08 | 1985-07-25 | Inter Control Hermann Köhler Elektrik GmbH & Co KG, 8500 Nürnberg | Bimetallgesteuerter Sprungscheiben-Thermoschalter |
| DE3626770A1 (de) * | 1986-08-07 | 1988-02-11 | Braun Ag | Schmelzsicherung, insbesondere fuer elektromotore |
-
1997
- 1997-02-18 DE DE19706316A patent/DE19706316C2/de not_active Expired - Fee Related
-
1998
- 1998-02-14 EP EP98912220A patent/EP0962024B1/de not_active Expired - Lifetime
- 1998-02-14 WO PCT/DE1998/000423 patent/WO1998037565A1/de not_active Ceased
- 1998-02-14 AT AT98912220T patent/ATE226754T1/de not_active IP Right Cessation
Non-Patent Citations (1)
| Title |
|---|
| See references of WO9837565A1 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113921332A (zh) * | 2021-10-11 | 2022-01-11 | 麦柯泰姆电子技术(上海)有限公司 | 一种温度开关及其装配方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0962024B1 (de) | 2002-10-23 |
| ATE226754T1 (de) | 2002-11-15 |
| DE19706316C2 (de) | 1999-10-21 |
| DE19706316A1 (de) | 1998-08-20 |
| WO1998037565A1 (de) | 1998-08-27 |
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