EP4018467A1 - Membrandruckschalter - Google Patents
MembrandruckschalterInfo
- Publication number
- EP4018467A1 EP4018467A1 EP20771208.4A EP20771208A EP4018467A1 EP 4018467 A1 EP4018467 A1 EP 4018467A1 EP 20771208 A EP20771208 A EP 20771208A EP 4018467 A1 EP4018467 A1 EP 4018467A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- membrane
- pressure switch
- microswitch
- switch according
- 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
- 239000012528 membrane Substances 0.000 title claims abstract description 40
- 235000001674 Agaricus brunnescens Nutrition 0.000 claims description 8
- 150000001875 compounds Chemical class 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 238000004382 potting Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims 1
- 238000006073 displacement reaction Methods 0.000 description 4
- IWZSHWBGHQBIML-ZGGLMWTQSA-N (3S,8S,10R,13S,14S,17S)-17-isoquinolin-7-yl-N,N,10,13-tetramethyl-2,3,4,7,8,9,11,12,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-3-amine Chemical compound CN(C)[C@H]1CC[C@]2(C)C3CC[C@@]4(C)[C@@H](CC[C@@H]4c4ccc5ccncc5c4)[C@@H]3CC=C2C1 IWZSHWBGHQBIML-ZGGLMWTQSA-N 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 229940125810 compound 20 Drugs 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- JAXFJECJQZDFJS-XHEPKHHKSA-N gtpl8555 Chemical compound OC(=O)C[C@H](N)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](C(C)C)C(=O)N[C@@H](C(C)C)C(=O)N1CCC[C@@H]1C(=O)N[C@H](B1O[C@@]2(C)[C@H]3C[C@H](C3(C)C)C[C@H]2O1)CCC1=CC=C(F)C=C1 JAXFJECJQZDFJS-XHEPKHHKSA-N 0.000 description 1
- 210000002105 tongue Anatomy 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
- H01H35/26—Details
- H01H35/2607—Means for adjustment of "ON" or "OFF" operating pressure
- H01H35/2628—Means for adjustment of "ON" or "OFF" operating pressure by varying the relative position of switch-casing and pressure sensitive element
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
- H01H35/34—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by diaphragm
Definitions
- the invention relates to a membrane pressure switch according to the preamble of claim 1.
- Such a membrane pressure switch is known from DE 201 06 436 U 1.
- This pressure switch comprises an insulating housing which is provided on the front side with at least two essentially axially parallel, radially elastic anchor tongues with gripper hooks which engage behind a front-side annular surface turned on a hexagon key.
- a membrane pressure switch which is provided with a housing in which a deformable membrane is arranged. Furthermore, a pressure mushroom is provided in the housing, which is guided displaceably by deformation of the membrane and for this purpose rests against the membrane. If pressure is exerted on the membrane, for example by a pressurized fluid, the membrane is deformed and presses on the pressure mushroom so that it can be moved from a rest position to a switching position along the longitudinal axis of the housing.
- the push button actuates a switching mechanism of a microswitch which is arranged opposite the push button by means of a fixing disk in the housing.
- the fixing disc is provided with an external thread which is screwed into an internal thread of the housing when the fixing disc is in the assembled state.
- Fig. 2 is a sectional view of the membrane pressure switch along the line A-A in Fig.
- FIG. 3 shows a sectional illustration of the membrane pressure switch according to FIG. 1 along the line B-B in FIG. 1, and
- FIG. 4 shows a perspective illustration of the membrane pressure switch according to the invention.
- FIG. 1 shows an end view of a diaphragm pressure switch 1 according to the invention and illustrates the section lines A-A and B-B, from which the sectional views of FIGS. 2 and 3 result.
- the membrane pressure switch 1 has a housing 2 in which a membrane 3 is arranged, which can be fixed in the housing 2 by means of a washer 9 placed on the membrane 3.
- the membrane 3 is deformable, for example by a fluid introduced into a pressure chamber 23, for which the fitting disk 9 has a preferably central recess 10.
- a pressure mushroom 4 is also arranged in the housing 2, which has a contact washer 4A and a plunger 4B fastened to the contact washer 4A.
- the push button 4 rests with its contact disk 4A on the membrane 3 and can move along a displacement path, which is indicated by the double arrow VW in Fig. 2, in the direction of an actuating element 22 of a microswitch 5, which is opposite the push button with the help of a Fixing disk 6 is arranged and fixed in housing 2.
- the fixing disc 6 is provided with an external thread 7 which can interact with an internal thread 8 of the housing 2, so that the fixing disc 6 and the microswitch 5 arranged on it are screwed into the housing 2 in the assembled state.
- the microswitch 5 is preferably glued to the fixing disk 6 in a sealing manner.
- an end stop 11 for the push button 4 is provided in the housing 2, which limits the displacement path VW in that the contact disk 4A rests on the stop 11 in the end position.
- the microswitch 5 is connected to a circuit board 12, which is also arranged in the housing 2.
- FIG. 2 finally shows that a tube 17 on the side of the microswitch 5 is plugged onto a free end region 18 of the housing 2, with one connection cable 21 being soldered onto the circuit board 12 and two into the tube 17 in the final assembly state shown in FIG Potting compounds 19 and 20 are filled.
- the potting compound 19 is a viscous plastic compound, so that it can be prevented that this potting compound 19 can penetrate the threads 7 and 8 that are screwed together.
- the second potting compound 20 is a plastic compound suitable for UL certification.
- a counter screw 13 is also screwed through the plate 12 into an internal thread 14 of the fixing disk 6.
- the counter screw 13 is supported with its front face 15 on a bottom surface 16 of the housing 2. This results in a tilting of the external thread 7 with respect to the internal thread 8, which defines the position of the fixing disk 6 and thus of the microswitch 5 in the housing 2.
- the present invention also relates to a method for setting a switching point of a membrane pressure switch.
- This procedure comprises the following procedural steps:
- the fixing disk 6 with the microswitch 5 fixed on it is screwed into the housing 2 until the microswitch 5 is switched by the push button 4.
- This circuit of the microswitch 5 can preferably be displayed on a suitable assembly tool.
- the counter screw 13 is screwed through the board 12 into the internal thread 14 of the fixing screw 6 until the end face 15 is on the Base surface 16 of the housing 2 is supported.
- the internal thread 8 of the housing 6 is tilted relative to the external thread 7 of the fixing disc 6, which fixes the fixing disc 6 and thus fixes the switching point of the microswitch.
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Switches Operated By Changes In Physical Conditions (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019212681.2A DE102019212681B4 (de) | 2019-08-23 | 2019-08-23 | Membrandruckschalter und Verfahren zur Einstellung eines Schaltpunktes eines Membrandruckschalters |
PCT/EP2020/073328 WO2021037665A1 (de) | 2019-08-23 | 2020-08-20 | Membrandruckschalter |
Publications (2)
Publication Number | Publication Date |
---|---|
EP4018467A1 true EP4018467A1 (de) | 2022-06-29 |
EP4018467B1 EP4018467B1 (de) | 2024-07-03 |
Family
ID=72470319
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20771208.4A Active EP4018467B1 (de) | 2019-08-23 | 2020-08-20 | Membrandruckschalter |
Country Status (4)
Country | Link |
---|---|
US (1) | US11823853B2 (de) |
EP (1) | EP4018467B1 (de) |
DE (1) | DE102019212681B4 (de) |
WO (1) | WO2021037665A1 (de) |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1148623B (de) * | 1957-07-05 | 1963-05-16 | Pleuger & Co | In Anhaengigkeit eines Fluessigkeitsstandes schaltender Tauchschalter zum Steuern von elektromotorisch angetriebenen Pumpen |
DE1829072U (de) * | 1961-02-11 | 1961-04-06 | Vdo Schindling | Membrandruckschalter. |
GB1278778A (en) | 1968-08-19 | 1972-06-21 | Simplifix Couplings Ltd | Improvements in pressure actuated switches |
DE3026532A1 (de) * | 1980-07-12 | 1982-02-18 | Robert Bosch Gmbh, 7000 Stuttgart | Druckschalter |
US4616114A (en) * | 1984-11-19 | 1986-10-07 | Texas Instruments Incorporated | Pressure responsive switch having little or no differential between actuation release pressure levels |
US4827095A (en) * | 1988-04-12 | 1989-05-02 | Dwyer Instruments, Inc. | Differential pressure switch assembly with high static pressure use characteristics |
US4900883A (en) * | 1988-06-14 | 1990-02-13 | Whitman Controls Corporation | Fluid-operated compound switch |
IT1252296B (it) * | 1991-11-15 | 1995-06-08 | Ma Ter Srl | Pressostato a sfioro, con microinterruttore di sicurezza a riarmo manuale |
DE19701584C2 (de) * | 1997-01-17 | 2000-02-03 | Manfred Heckner | Schalter, insbesondere Sicherheitsschalter |
DE20106436U1 (de) * | 2001-04-12 | 2001-06-28 | Quitoschinger, Willi, 72175 Dornhan | Druckschalter mit Anschlußstecker |
WO2005100792A1 (en) * | 2004-04-14 | 2005-10-27 | Gilberto Tadeu Pires De Paula | Pressure and flow controller for a pump |
US7112753B1 (en) * | 2005-08-29 | 2006-09-26 | Paul-Chia Lee | Pressure switch |
US8653387B2 (en) | 2010-07-07 | 2014-02-18 | Ashcroft, Inc. | Rotary adjustment for dual switch assembly |
US10510504B2 (en) | 2017-12-08 | 2019-12-17 | Eagle Technology, Llc | Force amplified low pressure depth activated switch |
-
2019
- 2019-08-23 DE DE102019212681.2A patent/DE102019212681B4/de active Active
-
2020
- 2020-08-20 EP EP20771208.4A patent/EP4018467B1/de active Active
- 2020-08-20 US US17/637,394 patent/US11823853B2/en active Active
- 2020-08-20 WO PCT/EP2020/073328 patent/WO2021037665A1/de unknown
Also Published As
Publication number | Publication date |
---|---|
US11823853B2 (en) | 2023-11-21 |
EP4018467B1 (de) | 2024-07-03 |
DE102019212681A1 (de) | 2021-02-25 |
DE102019212681B4 (de) | 2021-03-25 |
US20220285112A1 (en) | 2022-09-08 |
WO2021037665A1 (de) | 2021-03-04 |
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