EP2591488A1 - Régulateur bilame - Google Patents

Régulateur bilame

Info

Publication number
EP2591488A1
EP2591488A1 EP11728843.1A EP11728843A EP2591488A1 EP 2591488 A1 EP2591488 A1 EP 2591488A1 EP 11728843 A EP11728843 A EP 11728843A EP 2591488 A1 EP2591488 A1 EP 2591488A1
Authority
EP
European Patent Office
Prior art keywords
bimetallic
bimetal
arcuate
switching
contact
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP11728843.1A
Other languages
German (de)
English (en)
Other versions
EP2591488B1 (fr
Inventor
Elmar Mangold
Andreas J. Beckmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Stego Holding GmbH
Original Assignee
Stego Holding GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Stego Holding GmbH filed Critical Stego Holding GmbH
Priority to PL11728843T priority Critical patent/PL2591488T3/pl
Publication of EP2591488A1 publication Critical patent/EP2591488A1/fr
Application granted granted Critical
Publication of EP2591488B1 publication Critical patent/EP2591488B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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
    • H01H37/521—Thermally-sensitive members actuated due to deflection of bimetallic element comprising a plurality of bimetals acting in the same direction
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/12—Means for adjustment of "on" or "off" operating temperature

Definitions

  • the invention relates to a bimetal with a switching device and at least one bimetal device, which is so in operative connection with the switching device or can be brought that it allows a temperature-dependent switching of the switching device.
  • a bimetal or thermobimetal is a metal element made of two layers of different materials, which are connected to each other cohesively or positively. Characteristic is the change of shape with temperature change. The change in shape manifests itself as bending of the bimetal. The cause is the different thermal expansion coefficient of the metals used. If one metal expands more strongly than the associated other metal, the metal layer combination will bend.
  • the two metals are usually joined together by rolling and in particular cold welding, or else by mechanical connection means, such as rivets.
  • bimetals are temperature-dependent switches, the bimetals are used here so that they actuate a switching device with temperature changes and the associated bending.
  • Such a bimetal or switch shows, for example, DE 894 469, in which a bimetal is struck with one end to a basic construction and is operatively connected to a free end with a switching device.
  • This switching device consists of two switching elements which are adjustable relative to one another via a stop plate. In a deformation of the bimetallic there is a contact closure of the two switching elements, ie a switching operation, via which then an associated electrical device, etc. is controlled.
  • a similar bimetal is shown in DE 889 782, in which also a bimetal is struck with one end on a basic construction and is in operative connection with another free end with a switching device. Again, the triggered by the bending of the bimetallic element at the free end switching operation is adjustable via a suitable adjusting device.
  • the bimetallic regulators known from the prior art are usually not exactly adjustable with regard to the switching temperature. This can be observed especially with very small bimetallic regulators.
  • the object of the invention is therefore to offer a bimetallic according to the type mentioned above, which guarantees a precisely adjustable switching behavior and / or a small hysteresis, especially with a small size.
  • this object is achieved by a bimetallic, with a switching device and at least one bimetal, which is so operatively connected to the switching device or can be brought that it allows a temperature-dependent switching of the switching device, wherein the bimetallic device at least a first bimetallic element and at least one arcuate second Bimetallic element which are connected to one another at a contact area and formed at the contact area such that the coefficient of thermal expansion of the first bimetallic element decreases from its underside to the top and the coefficient of thermal expansion of the arcuate second bimetallic element increases from its underside to the top, or vice versa.
  • At least the first bimetallic element and at least the arcuate second bimetallic element are composed of at least two element layers each having at least built with different coefficients of thermal expansion, with respect to the thermal expansion coefficient of the layer structure of the first bimetallic element at the contact region opposite to the layer structure of the arcuate second bimetallic element extends.
  • the bimetallic device of the bimetal according to the invention consists of at least two bimetallic elements, namely at least a first bimetallic element and at least a second arcuate bimetallic element, both bimetallic elements are multilayer elements and wherein the layer elements of each bimetallic element used such different thermal expansion coefficients that the respective bimetal element deformed as a function of the ambient temperature.
  • the two bimetallic elements are connected to one another at a contact region in such a way that the layer structure of the first bimetallic element is opposite to the layer structure of the arcuate second bimetal element with respect to the thermal expansion coefficients.
  • this "opposite arrangement" of the layer structure is understood to mean an arrangement in which, with regard to the thermal expansion coefficients, the layer structure of the first bimetallic element, viewed from the layer with the lower coefficient of thermal expansion to the layer with the higher coefficient of thermal expansion, opposite to the layer structure
  • bimetal devices are thus also included in the scope of the invention, in which the first bimetallic element has, inter alia, a different layer structure with respect to the number of layers or the materials and material thicknesses used than the second bimetallic element, as long as especially in the contact area an "opposite layer structure" is provided.
  • the result is a bimetallic regulator in which even at low temperature changes large movements occur at the bimetal device, so u.a. Switching operations can be carried out even at low temperature changes.
  • the resulting bimetallic regulator is thus much more sensitive compared to prior art regulators.
  • the bimetal device comprises a plurality of series-connected combinations of first bimetallic elements and arcuate second bimetallic elements.
  • the bimetal device is preferably designed so that the arrangement of first bimetallic elements and arcuate second bimetallic elements alternates, whereby in each case again the inventive opposite arrangement of the layer structures of the respective bimetal elements is to be considered. It is also possible to form the bimetallic device in such a way that a combination of the first bimetal element and the arcuate second bimetallic element is connected via a further intermediate element and preferably a non-bimetallic intermediate element to a further combination of a first bimetallic element and arcuate second bimetallic element.
  • bimetal device meandering through a corresponding arrangement of first and second bimetallic elements, in particular so as to compensate for movements substantially perpendicular to the main movement direction (ie the direction of movement which executes a switching operation).
  • main movement direction ie the direction of movement which executes a switching operation.
  • non-bimetallic intermediate elements between at least a first bimetallic element and an arcuate second bimetallic element to arrange.
  • the first bimetallic element and / or the arcuate second bimetallic element are formed as a bimetallic strip.
  • the design with bimetallic strip guarantees a switching movement of the bimetal device in a defined direction of movement.
  • the contact region is disposed at the one distal end of the first bimetallic element and a proximal end of the arcuate second bimetallic element.
  • the contact region is disposed at the one distal end of the first bimetallic element and a proximal end of the arcuate second bimetallic element.
  • the arcuate second bimetallic element describes a half-arc to almost a solid sheet and in particular a three-quarter bow, in particular a semicircular arc to almost a full-circle arc and in particular a three-quarter arc.
  • the element movements of the first bimetallic element and the arcuate second bimetallic element add particularly effectively to a common switching movement with temperature change, wherein the bimetal device receives a very compact structure at the same time.
  • the arcuate second bimetallic element at its distal end on a particular substantially linearly shaped switching area, which is in operative connection with the switching device or can be brought.
  • a switching movement is very easily transmitted to the switching device via this switching range.
  • the main extension axis of the switching region and the adjoining tangent of the arcuate second bimetallic element encloses an angle of ⁇ 180 degrees, in particular an angle of ⁇ 90 degrees.
  • the switching range of the arcuate second bimetallic element is arranged at a defined normal temperature T 0 axis parallel to the main extension axis of the first bimetallic element.
  • the bimetallic device is mounted with a proximal end of the first bimetallic element substantially clamped relative to the switching device. Starting from this clamping point, results in a bimetal with a very large switching path, which can also be arranged in a confined space.
  • the element layer having the higher coefficient of thermal expansion is arranged in the region of the inner arc.
  • a bimetal device is obtained, which expands very strongly when the temperature increases and acts on a switching device arranged in the outer environment of the bimetal device.
  • the element layer with the higher coefficient of thermal expansion in the region of the outer arc of the second bimetallic element is arranged.
  • the present invention also relates to a device for the electrically conductive connection of at least one line element to the aforementioned bimetallic regulator or to a housing mounted in a contact element of a similar switching device, wherein a clamping device is provided, comprising: a clamping bolt and a clamping bolt receptacle, which together Define clamping space, in which the conduit element from the outside of the housing is inserted and into which the contact element protrudes from the inside of the housing, wherein the clamping bolt is held in the housing in its axial direction and with a clamping extension without restraint against the contact element and wherein an abutment portion of the clamping bolt receptacle so under Reduction of the terminal space on the clamping extension and the contact element adjacent thereto zubewegbar and at least in a clamping position can be fixed, that the conduit element and the contact element are fixed to each other electrically conductive, without a bending load is entered into the contact element.
  • Fig. 1 is an isometric view of an embodiment of the bimetal regulator
  • Fig. 2 is a side view of the embodiment of the bimetallic regulator of FIG.
  • Fig. 3 is a detail view of a bimetal device of the embodiment of
  • Fig. 5 is an isometric view of the embodiment of the bimetal regulator of Figure 1 with paternoster terminals.
  • FIG. 6 shows an isometric longitudinal section of the illustration from FIG. 5; and 7 shows an isometric longitudinal section of the embodiment of the bimetallic regulator according to FIG. 5 when integrated into a housing.
  • Fig. 1 shows an isometric view of an embodiment of the bimetallic controller according to the invention
  • Fig. 2 is a side view of this embodiment
  • Fig. 3 is a detail of a bimetal device 4, as used in this bimetal 1.
  • the bimetallic device 4 has two bimetal elements 6, 8, namely a first bimetallic element 6 and an arcuate second bimetallic element 8.
  • the arcuate second bimetallic element is embodied here at least partially in the form of a% circle.
  • These two bimetallic elements 6, 8 are connected to one another at a contact region 14, in particular here the first bimetallic element 6 is arranged with its distal end 7 at the proximal end 9 of the arcuate second bimetallic element 8.
  • the bimetal device 4 is connected via a switching element 3 with a switching device 2 in operative connection, which establishes an electrical connection between two contact elements 16, 18, thus enabling a switching operation.
  • An adjusting element 20 can be used to adjust this switching process by positioning two contact elements 17, 19 assigned to the contact elements 16, 18 relative to one another. Depending on how this positioning takes place, the switching device 2 triggers the switching operation in the case of small or larger movements of the bimetal device 4.
  • the bimetallic device 4 is clamped substantially rigidly with a proximal end 5 of the first bimetallic element 6 on a bearing block 22.
  • This bearing block which consists of a plurality of insulating individual elements 23, carries in addition to the bimetal 4 and the contact elements 16 and 18 and a holding plate 24, which allows attachment of the bimetallic regulator 1 in a housing 40 (see Fig. 7) and beyond the adjusting element 20th wearing.
  • the arcuate second bimetallic element 8 has at its distal end 11 via a switching region 13, via which it is in operative connection with the switching device 2 with the switching element 3. With a change in temperature, the shift range 13 moves due to the resulting movement of the two bimetallic elements 6, 8 to the switching device 2, wherein the switching element 3 triggers the switching process at a certain movement.
  • the structure of the switching device 2 in detail recognizable. It comprises the two contact elements 16 and 18, which can be brought into electrical conduction with one another via associated contact elements 17 and 19 by activation via the switching element 3.
  • the contact element 17 is designed here as a spring element and in particular as a beryllium spring element, so that the electrical conduction opens again in a "retraction" of the switching element 3.
  • the first bimetal element 6 consists of two element layers 10, 12, wherein the element layer 10 with the larger coefficient of thermal expansion ⁇ ⁇ ⁇ 0 on the bottom 21 shown in the drawing plane and the element layer 12 with the lower coefficient of thermal expansion ⁇ ⁇ ⁇ 2 on the top 23 is arranged.
  • This bimetallic element 8 consists of two element layers 10, 12, wherein in the contact region 14, the element layer 10 with the higher thermal expansion coefficient ⁇ ⁇ ⁇ ⁇ on the top surface shown in the drawing plane 23 and the element layer 12 with the lower thermal expansion coefficient a AT i 2 on the bottom 21st is arranged.
  • Fig. 4 shows a further embodiment of the bimetallic device 4, in which case a plurality of first bimetallic elements 6 and arcuate second bimetallic elements 8 are arranged in series and here in particular meandering.
  • the switching path 26 shown in FIG. 3 can be increased almost arbitrarily with a temperature change ⁇ , whereby unwanted movements, here for example the right-hand drift of the switching region 13 shown in FIG. 3, can be corrected.
  • the bimetal elements 6, 8 shown here in FIG. 4 also each have a layer structure consisting of at least two element layers 10, 12, as has already been explained in detail with reference to FIG. 3.
  • FIGS. 5 to 7 the previously discussed embodiment according to FIGS. 1 to 3 is shown once again in an isometric view (FIG. 5) and in a longitudinal section (FIG. 6).
  • the embodiment of the bimetallic regulator 1 has been supplemented here by clamping devices 28 and in particular by two paternoster terminals 30 which permit the simple connection of a line element (not shown) to the bimetallic regulator 1.
  • the contact elements 16, 18 mostly via a solder joint with further conductive elements (not shown), so here is the connection of the bimetallic regulator 1 and the contact elements 16, 18 on the paternoster terminals 30.
  • connection technique is that no heat energy is introduced by a soldering or welding process into the contact elements 16 and 18 and via these into the switching contacts 17, 19 and in particular the switching contact 17 designed here as Berrylium spring. Especially this heat input has led to deformations in the prior art and to a decrease in the restoring force of the running as a spring element switching contact 17. This artificial aging, which has essentially met a thermal aftertreatment, often led to a malfunction of the bimetal 1.
  • the clamping devices 28 shown in FIGS. 5 to 7 for the electrically conductive connection of at least one line element (not shown) to at least one contact element 16, 18 of a switching device and here of the bimetallic regulator 1 mounted in a housing 40 have the following:
  • a clamping bolt 32 and a clamping bolt receptacle 34 which together define a clamping space 36 into which the conduit element (not shown) can be inserted, in particular from an outer side 43 of the housing 40 and into which the contact element (16, 18) in particular from an inner side 45 of the Housing 40 protrudes (see in particular Fig.
  • clamping bolt 32 is held in particular in the housing 40 in its axial direction and with a clamping extension 33 forcibly on the contact element 16, 18, and wherein an abutment portion 35 of the clamping bolt receptacle 34 so under Reduction of the clamping space 36 on the clamping extension 33 and the adjacent contact element 16, 18 zubewegbar and at least in a clamping position can be fixed, that the line element (not shown) and the contact element 16, 18 are fixed to each other electrically conductive without a bending load in the Contact element 16, 18 is registered.
  • the clamping device 28 or the paternoster clamp 30 according to the invention therefore have, in addition to the simple and, in particular, heat-introduction-free connection of a line element with the contact elements 16, 18, the advantage of a non-constraining connection, so that the contact elements 16, 18 and the associated switching contacts 17, 19 no bending loads are entered.
  • the clamping bolt receptacle 34 is formed as a clamping bolt shoe which at least partially encloses the clamping space 36, wherein at its inner, the clamping extension 33 facing the bottom wall, the counter bearing portion 35 is formed.
  • the clamping bolt receptacle 34 is preferably mounted in the axial direction of the clamping bolt 32 movable on the clamping bolt.
  • the clamping bolt 32 is preferably provided with a threaded area which is connected to a threaded receiving area of the clamping bolt receptacle 34 in such a manner as to be threaded. deeingriff stands that the abutment portion 35 of the clamping bolt receptacle 34 by a rotation of the clamping bolt 32 on the clamping bolt extension 33 and the contact element 16, 18 adjacent thereto to and from this is movable.
  • the clamping bolt receptacle 34 is preferably formed of a multi-folded metal strip 42. This allows an inexpensive production with good stability and sufficient material for the formation of a threaded receiving area.
  • the clamping bolt receptacle 34 preferably has at its lower bottom region a cover element 44, which serves as a guide for connecting a line element.
  • the cover member 44 preferably extends axially parallel to the clamping bolt 32 so that it successively covers a receiving opening 48 in the housing 40 with a reduction of the clamping space 36, so here by a rotation of the clamping bolt 32. This prevents the erroneous insertion of the conduit element.

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Thermally Actuated Switches (AREA)

Abstract

L'invention concerne un régulateur bilame, comportant un dispositif de commutation (2) et au moins un dispositif à bilames (4), qui coopère ou peut être amené à coopérer avec le dispositif de commutation (2) de manière à permettre une commutation du dispositif de commutation (2) en fonction de la température. Le dispositif à bilames (4) comporte au moins un premier bilame (6) et au moins un deuxième bilame (8) courbe, qui sont reliés entre eux dans une zone de contact (14), dans laquelle lesdits bilames sont conçus de telle sorte que le coefficient de dilatation thermique du premier bilame (6) augmente de sa face inférieure (21) vers sa face supérieure (23) et que le coefficient de dilatation thermique du deuxième bilame (8) courbe diminue de sa face inférieure (21') vers sa face supérieure (23'), ou inversement.
EP11728843.1A 2010-07-05 2011-07-01 Régulateur bilame Active EP2591488B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL11728843T PL2591488T3 (pl) 2010-07-05 2011-07-01 Regulator bimetalowy

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010017741A DE102010017741B4 (de) 2010-07-05 2010-07-05 Bimetallschalter
PCT/EP2011/061087 WO2012004197A1 (fr) 2010-07-05 2011-07-01 Régulateur bilame

Publications (2)

Publication Number Publication Date
EP2591488A1 true EP2591488A1 (fr) 2013-05-15
EP2591488B1 EP2591488B1 (fr) 2017-04-05

Family

ID=44627758

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11728843.1A Active EP2591488B1 (fr) 2010-07-05 2011-07-01 Régulateur bilame

Country Status (13)

Country Link
US (1) US10332706B2 (fr)
EP (1) EP2591488B1 (fr)
JP (1) JP2013533592A (fr)
KR (1) KR20130137120A (fr)
CN (1) CN102959671B (fr)
BR (1) BR112013000015B1 (fr)
CO (1) CO6660495A2 (fr)
DE (1) DE102010017741B4 (fr)
EA (1) EA023533B1 (fr)
ES (1) ES2628593T3 (fr)
MX (1) MX2012015033A (fr)
PL (1) PL2591488T3 (fr)
WO (1) WO2012004197A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103065867A (zh) * 2012-12-25 2013-04-24 戎征雷 一种恒温温控器
DE102016210485A1 (de) * 2016-06-14 2017-12-14 Siemens Aktiengesellschaft Elektromechanisches Schutzschaltgerät mit einer Überlastauslöseeinrichtung
CN108321014B (zh) * 2018-02-07 2024-03-08 佛山市顺德区汇控电器制造有限公司 一种双保险的防复位温控器
CN117759636B (zh) * 2024-02-20 2024-04-30 浙江大铭汽车零部件有限公司 一种轮毂轴承及其使用方法

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US847981A (en) * 1905-12-08 1907-03-19 Peabody A Brown Thermostat.
DE361876C (de) * 1922-10-20 Abton Albert Buck Temperaturbegrenzer fuer die Regelung der durch elektrischen Stromkreis erzeugten Waerme
NL5960C (fr) * 1918-10-30
DE522073C (de) * 1928-10-10 1931-03-31 Siemens & Halske Akt Ges Einrichtung an Temperaturzeitschaltern
US2585068A (en) * 1947-02-28 1952-02-12 Morris B Wood Electrical circuit breaker
US2574192A (en) * 1949-10-26 1951-11-06 Samuel Leo Safety switch for liquid cooled engines
DE889782C (de) 1951-12-20 1953-09-14 Gross A G Bimetallregler, insbesondere Bimetalltemperaturregler
DE894469C (de) 1951-12-25 1953-10-26 Gross A G Bimetallregler, insbesondere Bimetalltemperaturregler
DE1077333B (de) * 1957-01-18 1960-03-10 Hans Widmaier Bimetall-Thermorelais mit Momentschaltung
US3015015A (en) * 1958-06-30 1961-12-26 Specialpapper Ab Device for regulating the average effect of an electric heating apparatus
US3160010A (en) * 1961-08-03 1964-12-08 American Thermostat Corp Thermostat with compound bimetallic strip
US3227842A (en) * 1961-11-03 1966-01-04 Sylvania Electric Prod Temperature-actuated circuit breaker
US3292070A (en) * 1964-04-13 1966-12-13 Gen Motors Corp Electric motor protector circuit
US3441697A (en) * 1966-04-05 1969-04-29 Federal Pacific Electric Co Circuit interrupters with improved arc chutes
JPS5033641Y1 (fr) 1969-07-25 1975-10-01
US3833873A (en) * 1973-12-14 1974-09-03 Texas Instruments Inc Thermal protector
DE2406867A1 (de) * 1974-02-13 1975-08-21 Elektrobau Mulfingen Gmbh Bimetall-thermoschalter
CA1105581A (fr) * 1978-07-29 1981-07-21 Hans-Herbert Kordt Bornes electriques montes sur profile
JPS5591038U (fr) * 1978-12-19 1980-06-24
FR2489616A1 (fr) * 1980-09-03 1982-03-05 Valeo Circuit d'alimentation d'un moteur electrique, comprenant une protection contre les surintensites
US4521760A (en) * 1983-09-19 1985-06-04 Gte Products Corporation Miniaturized circuit breaker
DE3408006C2 (de) * 1984-03-03 1986-10-23 C.A. Weidmüller GmbH & Co, 4930 Detmold Leiteranschluß, insbesondere für Hochstromklemmen
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Also Published As

Publication number Publication date
KR20130137120A (ko) 2013-12-16
ES2628593T3 (es) 2017-08-03
BR112013000015A2 (pt) 2016-05-24
CO6660495A2 (es) 2013-04-30
DE102010017741A1 (de) 2012-01-05
US10332706B2 (en) 2019-06-25
DE102010017741B4 (de) 2012-05-16
WO2012004197A1 (fr) 2012-01-12
CN102959671A (zh) 2013-03-06
PL2591488T3 (pl) 2017-11-30
BR112013000015B1 (pt) 2020-10-27
JP2013533592A (ja) 2013-08-22
MX2012015033A (es) 2013-08-27
EA023533B1 (ru) 2016-06-30
US20130106566A1 (en) 2013-05-02
EA201201672A1 (ru) 2013-06-28
CN102959671B (zh) 2016-03-30
EP2591488B1 (fr) 2017-04-05

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