WO1995022159A1 - Thermische sicherung - Google Patents
Thermische sicherung Download PDFInfo
- Publication number
- WO1995022159A1 WO1995022159A1 PCT/DE1995/000165 DE9500165W WO9522159A1 WO 1995022159 A1 WO1995022159 A1 WO 1995022159A1 DE 9500165 W DE9500165 W DE 9500165W WO 9522159 A1 WO9522159 A1 WO 9522159A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- thermal fuse
- housing
- contact
- fuse according
- pot
- Prior art date
Links
Classifications
-
- 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
- H01H37/764—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material in which contacts are held closed by a thermal pellet
- H01H37/766—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material in which contacts are held closed by a thermal pellet using a bridging contact
Definitions
- the invention relates to a thermal fuse with the features of the preamble of claim 1.
- the invention also relates to a method for producing a thermal fuse with the features of the preamble of claim 1.
- a thermal fuse is known in the prior art (brochure "MICROTEMP Thermal Cutoffs") which, when a triggering temperature is exceeded, interrupts a current path running through it and which has a fuse housing from which two connection contacts are used to form the current path protrude, which are bridged by a contact path in the housing interior closed when a fuse is not activated via a movement contact and in which a thermally sensitive element is provided which, in the closed position, prestresses the movement contact in a spring-loaded manner which mixes when the thermal movement opens sensitive element due to the spring force of an opening spring acting on it in the contact opening direction interrupts the contact path.
- the thermal fuse according to the prior art is disadvantageous in that the current is routed through the housing of the device, which means that it is not necessary to use costly insulation measures by which the entire fuse housing is enclosed. It has also been shown that the response times for the fuses according to the prior art are relatively long.
- a thermal fuse with the features of the preamble of claim 1 is known from US Pat. No. 4,673,909, Their correct response behavior is very endangered inasmuch as slight damage, ie, for example, indentations or indentations in the housing lead to blocking of the moving parts in the interior of the fuse, so that the fuse no longer at all when the triggered temperature is reached can address.
- the invention is based on the object of developing a thermal fuse with the features of claim 1 in such a way that it can be produced in a simple manner and in particular fully automatically, shows a short and defined response behavior and shows a correct response behavior Securing is ensured even with mechanical loads on the outside of the housing.
- This object is achieved by the features of the characterizing part of the claim, advantageous further developments result from subclaims 2-19, and a particularly advantageous procedure for, in particular, automatic assembly of such a fuse is taught by method claim 20.
- the guide element is formed by the bottom of the essentially pot-like insulating part, since the combination of the sleeve filled with fused solder encompasses a transmission pin, centering of the insulating part in the lower part and the pin in the insulating part as well as during the assembly process can be done in a simple manner the sleeve based on the insulating part, whereby simply nesting the corresponding components is sufficient.
- FIG. 1 shows a central longitudinal section through a fuse
- FIG. 2 shows a section according to FIG. 1 with a modified pressure contact
- FIG. 3 is a view in the direction of arrow X according to FIG.
- FIG. 5 shows a section through a second embodiment of a pressure spring
- 6 shows a central longitudinal section according to FIG. 1, in which the lower housing part 24 is formed from two sections 24a and 24b.
- a thermal fuse 1 is shown there, which has a fuse housing 2, from which two connection contacts 3, 4 protrude to form the current path. This bridges a closed contact path in the housing interior 6 when the fuse is not addressed via a movement contact 5. Furthermore, a thermal element 7 is provided which, in the closed contact position, prestresses the movement contact 5 in a spring-loaded manner, which interrupts the contact path when the thermally sensitive element 7 opens due to the spring force of an opening spring 9 acting on it in the contact opening direction 8.
- the contact path comprises two fixed contacts 10, 11 located next to one another in the interior of the fuse block 2, the contact surfaces 12, 13 of which essentially point in the direction of the thermally sensitive element 7.
- the movement contact 5 rests on the contact surfaces 12, 13 in the manner of a movably supported bridge element.
- the thermally sensitive element 7, which consists of a melt-absorbing sleeve 14 and a transmission element 15 fastened therein, exerts a pressure component on the movement contact 5, which presses the plane spanned by the two contact surfaces 12, 13 between the two fixed parts contacts 10, 11 intersects, that is, runs centrally between them.
- the movement contact 5 is designed as a solid, essentially round plate.
- a pressure spring 17 which ensures the contact closing pressure and which is derived in detail from the drawing. 4 results in more detail and is designed as a star spring 18 which has edge-side legs 19 which, when the star spring 18 relaxes, bulge convexly over the central part 20 of the star spring 18.
- the central part 20 of the star spring 18 is acted upon by the transmission element 15 in the contact closed position, the ends 21 of the legs -19 of the star spring. 18 are based on the movement contact 5.
- pressure spring also results from drawing figure 5.
- the pressure spring is shown as a U-shaped plate element 22 that bulges convexly on both sides when relaxed.
- the fixed contacts 10, 11 are head-like ends of the inner terminal contacts passing through the lower housing part 24 in parallel.
- the connection contacts 3 and 4 protrude from the underside 25.
- the transmission element 15 is arranged in an essentially ring-shaped guide element 26 in the upper housing part 27, the guide element 26 being formed by the bottom of an essentially pot-like insulating part 28 with a ring-like collar 29 on the upper edge 30 of the lower housing part 24 is supported and thereby fixed.
- the sleeve 14 receiving the fusible link 31 is located in an essentially closed first chamber 32 in the upper housing area.
- the fixed contacts 10, 11, the movement contact 5, the pressure spring 17 and the opening spring 9 are located in an essentially closed second chamber 33 in the central housing area.
- the first 32 and the second chamber 33 are formed by the ring-like
- the guide element 26 for the transmission element 15 is separated from one another.
- the upper housing part 27 and the lower housing part 24 are overlapped by a metallic, pot-like upper part 40, the sleeve 14 with the fusible link 31 lies against the inside 41 of the end face 42 of the pot-like upper part 40 and is ⁇ o in this with intimate ther Contact with this.
- a projection 45 tapering downwards in a step-like manner down the housing diameter is provided in the area of the lower housing part 24, a projection 45 tapering downwards in a step-like manner down the housing diameter is provided.
- the pot-like, metallic upper part 40 is led with its lower edge up to the step-like projection 45 and has a flange 46 there.
- the end face 49 of the upper part 40 is provided with a plate-like impression, on the inside 41 of which the sleeve 14 rests.
- Drawing 6 largely corresponds to FIG. 1, only the lower housing part 24 is formed by two partial sections 24a and 25b, in order to ensure that the lower housing part 24 (a and b) can be manufactured better and more easily with certain materials .
- FIG. 7 has a plate-like widening 50 of the base area 42 of the sleeve 40, so that a simple, heat-contacting attachment of the sleeve 40 to a base 54 can be carried out with clamping means 52.
- the bottom area 42 of the sleeve 40 is provided with a fastening tab 56 with a bore 58, so that the sleeve 40 can be held without problems with other thermally sensitive elements, for example in a collar rivet arrangement. Furthermore, an arrangement of a fastening plate 56 on both sides is also possible.
- the sleeve 40 provided with an annular collar-like extension 60 which is essentially aligned with the sleeve side walls.
- the bottom area 42 of the sleeve 40 is provided with a thickening 62.
- annular collar arrangement 70 is integrally formed in the inner area of the bottom area 42.
- 7 - 11 can be produced as extruded, pressed or impact pressed parts, so that the fastening elements 50, 56, 60, 62 and 70 are formed integrally with the body of the pot-like sleeve 40 and thus are one high heat input into the sleeve area is guaranteed.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Fuses (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP95908878A EP0744079A1 (de) | 1994-02-10 | 1995-02-09 | Thermische sicherung |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP4404167.5 | 1994-02-10 | ||
DE19944404167 DE4404167C2 (de) | 1994-02-10 | 1994-02-10 | Thermische Sicherung |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1995022159A1 true WO1995022159A1 (de) | 1995-08-17 |
Family
ID=6509913
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1995/000165 WO1995022159A1 (de) | 1994-02-10 | 1995-02-09 | Thermische sicherung |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0744079A1 (de) |
CN (1) | CN1140509A (de) |
DE (1) | DE4404167C2 (de) |
WO (1) | WO1995022159A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10226357B4 (de) * | 2002-06-13 | 2004-06-24 | INTER CONTROL Hermann Köhler Elektrik GmbH & Co KG | Thermische Sicherung |
CN103036204B (zh) * | 2012-12-03 | 2015-04-01 | 昆明绿电科技有限公司 | 光伏汇流箱双模式自动触发防火保护装置 |
CN107633984B (zh) * | 2017-10-27 | 2019-12-13 | 泉州台商投资区镕逸科技有限公司 | 一种温度保险丝结构 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1139905B (de) * | 1954-04-19 | 1962-11-22 | Walter Otto | Temperaturabhaengige elektrische Schalt-vorrichtung mit Schmelzglied |
US3774136A (en) * | 1972-12-04 | 1973-11-20 | Gen Motors Corp | Temperature responsive switch |
GB2001474A (en) * | 1977-07-21 | 1979-01-31 | Minnesota Mining & Mfg | Thermal switch |
EP0206868A1 (de) * | 1985-06-14 | 1986-12-30 | Seb S.A. | Thermischer Sicherungsschalter |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4186366A (en) * | 1978-10-20 | 1980-01-29 | Illinois Tool Works Inc. | Radial lead thermal cut-off device |
DE9113825U1 (de) * | 1991-11-07 | 1992-12-10 | Hofsäss, Peter, 7530 Pforzheim | Temperaturschalter |
-
1994
- 1994-02-10 DE DE19944404167 patent/DE4404167C2/de not_active Expired - Fee Related
-
1995
- 1995-02-09 WO PCT/DE1995/000165 patent/WO1995022159A1/de not_active Application Discontinuation
- 1995-02-09 CN CN 95191570 patent/CN1140509A/zh active Pending
- 1995-02-09 EP EP95908878A patent/EP0744079A1/de not_active Ceased
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1139905B (de) * | 1954-04-19 | 1962-11-22 | Walter Otto | Temperaturabhaengige elektrische Schalt-vorrichtung mit Schmelzglied |
US3774136A (en) * | 1972-12-04 | 1973-11-20 | Gen Motors Corp | Temperature responsive switch |
GB2001474A (en) * | 1977-07-21 | 1979-01-31 | Minnesota Mining & Mfg | Thermal switch |
EP0206868A1 (de) * | 1985-06-14 | 1986-12-30 | Seb S.A. | Thermischer Sicherungsschalter |
Also Published As
Publication number | Publication date |
---|---|
CN1140509A (zh) | 1997-01-15 |
EP0744079A1 (de) | 1996-11-27 |
DE4404167A1 (de) | 1995-08-17 |
DE4404167C2 (de) | 1995-11-30 |
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