EP0939416A2 - Druckbetätigter Schalter - Google Patents
Druckbetätigter Schalter Download PDFInfo
- Publication number
- EP0939416A2 EP0939416A2 EP99103369A EP99103369A EP0939416A2 EP 0939416 A2 EP0939416 A2 EP 0939416A2 EP 99103369 A EP99103369 A EP 99103369A EP 99103369 A EP99103369 A EP 99103369A EP 0939416 A2 EP0939416 A2 EP 0939416A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- switch
- plunger
- switching
- switch according
- rotary knob
- 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 claims abstract description 10
- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 description 6
- RRLHMJHRFMHVNM-BQVXCWBNSA-N [(2s,3r,6r)-6-[5-[5-hydroxy-3-(4-hydroxyphenyl)-4-oxochromen-7-yl]oxypentoxy]-2-methyl-3,6-dihydro-2h-pyran-3-yl] acetate Chemical compound C1=C[C@@H](OC(C)=O)[C@H](C)O[C@H]1OCCCCCOC1=CC(O)=C2C(=O)C(C=3C=CC(O)=CC=3)=COC2=C1 RRLHMJHRFMHVNM-BQVXCWBNSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 210000003746 feather Anatomy 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
- H01H19/54—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand the operating part having at least five or an unspecified number of operative positions
- H01H19/60—Angularly-movable actuating part carrying no contacts
- H01H19/635—Contacts actuated by rectilinearly-movable member linked to operating part, e.g. by pin and slot
-
- 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 present invention relates to a pressure-operated switch according to the preamble of claim 1.
- Such switches are used as pressure regulators, for example, depending on the pressure Switch compressors on and off.
- a manually operated rotary knob for switching on and off independently of pressure provided, via which a plunger is so axially displaceable that the switching part is operated in the sense of a separation of the switch contacts.
- the plunger is located on the end face of an underside of the rotary knob inclined plane through which the ram stroke is generated when the rotary knob is turned becomes.
- the known embodiments include, for example, a switch in which the pressure-dependent switching takes place via a slide on which the pressure forces act and by which the switching part is actuated.
- the present invention is therefore based on the object of a switch Generate generic type so that it is structurally simple, Malfunctions in manual operation are excluded, the susceptibility to failure is reduced, operational safety is improved and production and assembly becomes cheaper.
- this constructive design prevents the Tappet when the hood is removed into a position that closes the switch contacts moved back. Rather, the switch contacts remain open in a current-interrupting manner that significantly improved operational safety when the switch or removed hood is given.
- the rotary knob is provided and to allow the joints to interlock positively, which is why in the rotary knob inserted plunger end, for example in cross section, the shape of a square can have, while the rotary knob a correspondingly adapted recording having.
- the plunger is arranged in a plunger guide and has a locking pin which in the interrupted position on the tappet guide is present that an unintentional axial displacement of the ram is excluded is.
- the length of the ram has no influence on the rotatability, height tolerances of the Housing, on which the knob is fixed, irrelevant, which also makes Manufacturing advantages result because the housing is no longer with a corresponding restricted tolerance limit must be manufactured.
- the switch contacts are provided the assembly of the switch so to place in a base body that when removed Touch is excluded.
- the switch contacts are therefore covered without special additional components.
- the basic body forms practically an enclosure for the switch contacts, in which also a main compression spring is arranged in a correspondingly shaped receptacle.
- a pressure differential spring to change the hysteresis in the Base body can be provided, which advantageously as a plastic injection molded part is made.
- the pressure operated switch shown in the figures for switching on and off an electrically operated unit, not shown, for generating pressure consists in its basic structure of a base body 1, which is on a base plate 21 is attached.
- This base body 1 is designed in the sense of an enclosure, i.e. he forms with the base plate 21 is a substantially closed housing in which an actuatable Switching contact 6 and a function-related one Contact bridge 7 are arranged and attached.
- the base body is covered by a housing 3, which is connected to the base body 1 is screwed and on which a rotary knob 4 is captively mounted.
- a plunger 5 is secured against rotation in this externally actuatable rotary knob 4 out, which is moved axially when the rotary knob 4 is rotated.
- the plunger 5 is held in a plunger guide 9, which is part of the base body 1 and which has a bevel 22 on the underside, on which a locking pin 10 of the plunger 5 abuts.
- a plunger guide 9 which is part of the base body 1 and which has a bevel 22 on the underside, on which a locking pin 10 of the plunger 5 abuts.
- the ram guide 9 is straight, transverse to the direction of movement of the plunger 5 extending, on which the locking pin 10 in a is in the lower end position, so that there is axial locking against displacement.
- the switch has a switching part 2 which is pivotable on the base body 1 is mounted and that at the other end with a switching flap 8 and a hold-down 11 is provided, the switching part 2 including the switching flap 8 and of the hold-down device 11 is formed in one piece.
- the membrane lever 13 has a plate-shaped depression provided, in which a compression spring 18 is supported, the spring force against the pressure of the print medium is directed.
- This compression spring 18 is in a receptacle 19 guided, at the bottom of which it is supported with its other end, wherein the bias of the compression spring 18 is adjustable.
- the receptacle 19 is in one piece Part of the base body 1.
- a spring holder is parallel to the holder 19 20 arranged to accommodate a pressure differential spring with which the hysteresis can be enlarged.
- the medium connection 15 carries, a connector 17 connected to which a valve can be attached, the for example between a line to the pressure vessel on the one hand and a compressor on the other hand is switched.
- the peculiarity of the connector 17 is in that the connection to the valve, not shown, is bayonet-type takes place, which is an easy assembly and an inexpensive manufacture of this closure enables.
- Fig. 1 the switch is shown in a position in which the switch contacts 6 the Contact contact bridge 7 so that the connected unit is in operation.
- Fig. 3 the switch is interrupted manually, i.e. the knob 4 is in one Off position rotated.
- the plunger 5 was also rotated, whereby - how already described - due to the interaction between the locking pin 10 and the bevel 22 there is an axial displacement of the plunger downwards.
- the switching flap 8 together with the hold-down 11 against the pressure the leg spring 12 pressed down, the hold-down 11 the switching contact 6 from its contact position with the contact bridge 7, so that the current flow is interrupted.
- this end position is at which the locking pin 10 at which the Inclined 22 adjoining straight lines, so that an unintentional shift in the axial direction of the ram is very clearly recognizable.
- the housing 3 together with the knob 4 can be easily removed without changing the position of the plunger and the switching contacts 6.7 remain interrupted.
- the switching flap 8 and the hold-down device 11 is pressed down, with the hold-down device 11 being the Switch contact 6 is released from the contact bridge 7.
- the entire switch consists of few parts, whereby through the base body 1, the top and side is closed, the cable connections, marked by screws 24, also at removed housing 3 protected against accidental finger access are.
- cable bushings 16 are provided on the base plate 21, through which the electrical lines can be guided in the area of the screws 24.
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Switches Operated By Changes In Physical Conditions (AREA)
- Push-Button Switches (AREA)
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
Abstract
Description
- Figur 1 eine
- Seitenansicht durch einen geschnittenen Schalter in Kontaktstellung,
- Figur 2 eine
- Draufschicht auf den Schalter,
- Figur 3 eine
- Seitenansicht auf den geschnittenen Schalter in Unterbrechungsstellung,
- Figur 4 einen
- Teilausschnitt des geschnittenen Schalters gleichfalls in Unterbrechungsstellung.
- 1
- Grundkörper
- 2
- Schaltteil
- 3
- Gehäuse
- 4
- Drehknopf
- 5
- Stößel
- 6
- Schaltkontakt
- 7
- Kontaktbrücke
- 8
- Schaltklappe
- 9
- Stößelführung
- 10
- Arretierzapfen
- 11
- Niederhalter
- 12
- Schenkelfeder
- 13
- Membranhebel
- 14
- Membrane
- 15
- Mediumanschluß
- 16
- Kabeldurchführung
- 17
- Anschlußteil
- 18
- Hauptdruckfeder
- 19
- Aufnahme
- 20
- Federaufnahme
- 21
- Grundplatte
- 22
- Schräge
- 23
- Flansch
- 24
- Schraube
Claims (10)
- Druckbetätigter Schalter zum Ein- und Ausschalten eines elektrisch betreibbaren Aggregates zur Druckerzeugung mit einem durch ein unter Druck stehendes Medium mittelbar betätigbaren federbelasteten Schaltteil (2) zum Öffnen und Schließen von Schaltkontakten (6,7) und einem handbetätigbaren, als Drehknopf (4) ausgebildeten Ein-/Ausschalter, der mit einem axial bewegbaren Stößel (5) in Verbindung steht, über den das Schaltteil (2) betätigbar ist, dadurch gekennzeichnet, daß der Stößel (5) verdrehsicher mit dem Drehknopf (4) verbunden ist und in einer durch den Stößel (5) bewirkten Unterbrechungsstellung der Schaltkontakte (6,7) verschiebegesichert ist und daß das Schaltteil (2) mit einem durch den Mediendruck betätigbaren, federbelasteten und schwenkbaren Membranhebel (13) verbunden ist.
- Schalter nach Anspruch 1, dadurch gekennzeichnet, daß das Schaltteil (2) über eine Schenkelfeder (12) mit dem Membranhebel (13) verbunden ist.
- Schalter nach Anspruch 1, dadurch gekennzeichnet, daß das Schaltteil (2) einen Niederhalter (11), der sich am bewegbaren Schaltkontakt (6) abstützt, und eine Schaltklappe (8) aufweist, an der der Stößel (5) mit seiner dem Drehknopf (4) abgewandten Stirnseite anliegt.
- Schalter nach Anspruch 1, dadurch gekennzeichnet, daß der Stößel (5) axial in einer Stößelführung (9) geführt ist, die auf ihrer dem Drehknopf (4) abgewandten Unterseite eine nach unten gerichtete Schräge (22) sowie eine sich daran anschließende in horizontaler Ebene verlaufende Gerade aufweist, an denen je nach Verschiebestellung des Stößels (5) ein damit fest verbundener Arretierzapfen (10) anliegt.
- Schalter nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß ein Grundkörper (1) vorgesehen ist, in dem die Schaltkontakte (6), damit in Wirkverbindung bringbare Kontaktbrücken (7), die Stößelführung (9) angeordnet sind und an dem der Membranhebel (13) schwenkbar befestigt ist.
- Schalter nach Anspruch 5, dadurch gekennzeichnet, daß an dem Grundkörper (1) eine Aufnahme (19) vorgesehen ist, in der eine Hauptdruckfeder (18) angeordnet ist, die sich am Membranhebel (13) abstützt.
- Schalter nach Anspruch 1, dadurch gekennzeichnet, daß der Stößel (5) ein abgeflachtes Ende aufweist, mit dem er in einer entsprechend angepaßten Aufnahme des Drehknopfes (4) längsverschiebbar einliegt.
- Schalter nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß der Grundkörper (1) oberseitig und seitlich weitgehend geschlossen ist und daß die elektrischen Zuleitungen unterseitig in den Grundkörper (1) zu den Schaltkontakten (6) bzw. der Kontaktbrücke (7) geführt sind.
- Schalter nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß in dem Grundkörper (1) das Schaltteil (2) bewegbar angeordnet ist.
- Schalter nach Anspruch 1, dadurch gekennzeichnet, daß an einem mit einer Grundplatte (21) verbundenen Flansch (23), der einen Medienanschluß (15) trägt, ein Anschlußteil (17) angeordnet ist, an das im Sinne eines Bajonettverschlusses eine Leitung für ein Ventil anschließbar ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1998108559 DE19808559C1 (de) | 1998-02-28 | 1998-02-28 | Druckbetätigter Schalter |
DE19808559 | 1998-02-28 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0939416A2 true EP0939416A2 (de) | 1999-09-01 |
EP0939416A3 EP0939416A3 (de) | 2000-04-19 |
EP0939416B1 EP0939416B1 (de) | 2006-05-03 |
Family
ID=7859266
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19990103369 Expired - Lifetime EP0939416B1 (de) | 1998-02-28 | 1999-02-22 | Druckbetätigter Schalter |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0939416B1 (de) |
DE (1) | DE19808559C1 (de) |
ES (1) | ES2263235T3 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19918208A1 (de) * | 1999-04-22 | 2000-10-26 | Bircher Ag Beringen | Schaltelement, insbesondere Druckwellenschalter |
DE10216416B4 (de) * | 2002-04-12 | 2004-02-26 | Condor Werke Gebr. Frede Gmbh & Co Kg | Druckschalter |
US10529512B2 (en) | 2016-02-11 | 2020-01-07 | Transform Sr Brands Llc | Multi-mode air compressor pressure power switch |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2390145A (en) * | 1943-08-20 | 1945-12-04 | Wilcolator Co | Electric switch |
DE6811228U (de) * | 1968-12-13 | 1969-04-30 | Kloeckner Moeller Elek Zitats | Druckleuchter |
DE2443365A1 (de) * | 1974-09-11 | 1976-03-25 | Kromschroeder Ag G | Druckwaechter |
DE3622289A1 (de) * | 1986-07-03 | 1988-01-14 | Swf Auto Electric Gmbh | Elektrischer schalter |
JPH04133219A (ja) * | 1990-09-25 | 1992-05-07 | Yamada Denki Seizo Kk | 圧力スイッチ |
DE4308090C1 (de) * | 1993-03-13 | 1994-06-30 | Condor Werke Gebr Frede Gmbh & | Druckschalter |
FR2710451B1 (fr) * | 1993-09-24 | 1995-12-01 | Claude Bonnet | Coupe-circuit comprenant une cage à ressort mobile et une poignée de manÓoeuvre amovible. |
-
1998
- 1998-02-28 DE DE1998108559 patent/DE19808559C1/de not_active Expired - Fee Related
-
1999
- 1999-02-22 ES ES99103369T patent/ES2263235T3/es not_active Expired - Lifetime
- 1999-02-22 EP EP19990103369 patent/EP0939416B1/de not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
None |
Also Published As
Publication number | Publication date |
---|---|
EP0939416B1 (de) | 2006-05-03 |
DE19808559C1 (de) | 1999-09-23 |
EP0939416A3 (de) | 2000-04-19 |
ES2263235T3 (es) | 2006-12-01 |
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