US3261942A - Reed contact with ball-shaped armature - Google Patents
Reed contact with ball-shaped armature Download PDFInfo
- Publication number
- US3261942A US3261942A US368535A US36853564A US3261942A US 3261942 A US3261942 A US 3261942A US 368535 A US368535 A US 368535A US 36853564 A US36853564 A US 36853564A US 3261942 A US3261942 A US 3261942A
- Authority
- US
- United States
- Prior art keywords
- contact
- rods
- ball
- envelope
- armature
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H51/00—Electromagnetic relays
- H01H51/28—Relays having both armature and contacts within a sealed casing outside which the operating coil is located, e.g. contact carried by a magnetic leaf spring or reed
- H01H51/288—Freely suspended contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
- H01H1/16—Contacts characterised by the manner in which co-operating contacts engage by abutting by rolling; by wrapping; Roller or ball contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/64—Protective enclosures, baffle plates, or screens for contacts
- H01H1/66—Contacts sealed in an evacuated or gas-filled envelope, e.g. magnetic dry-reed contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H36/00—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
- H01H36/0006—Permanent magnet actuating reed switches
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H36/00—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
- H01H36/0006—Permanent magnet actuating reed switches
- H01H36/0013—Permanent magnet actuating reed switches characterised by the co-operation between reed switch and permanent magnet; Magnetic circuits
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H36/00—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
- H01H36/008—Change of magnetic field wherein the magnet and switch are fixed, e.g. by shielding or relative movements of armature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
- H01H50/60—Contact arrangements moving contact being rigidly combined with movable part of magnetic circuit
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H51/00—Electromagnetic relays
- H01H51/28—Relays having both armature and contacts within a sealed casing outside which the operating coil is located, e.g. contact carried by a magnetic leaf spring or reed
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/16—Indicators for switching condition, e.g. "on" or "off"
Definitions
- the invention relates to a reed contact in which the freely movable armature within the reed contact tube is in the shape of a ball.
- the ball is made from magnetic material and is held in position under the influence of at least one permanent magnet.
- Known electro-magnetic relays have an armature, preferably ball-shaped, freely movable in the working air gap of the relay.
- the ball armature is held under the influence of at least one permanent magnet.
- the iron core of this relay is made of two straight rods, preferably with round profile, which are arranged successively and which limit with their opposite ends the working air gap.
- the permanent magnet or magnets are designed as fiat construction elements, preferably rectangularshaped, and arranged in parallel to the plane in which the rods are located.
- the object of the invention is to provide a reed contact relay which consists of elements that are easily constructed. Another object is to provide reed contacts which can be used as make-, break-, or switch-over-contacts, depending on the wiring connected to the ends protruding from the tube.
- reed-type contacts are of particularly small dimensions. According to the invention, particular care has been taken so that a large part of the ball surface of the armature will be used for contact making. This is achieved, according to the invention, by the use of rodshaped contacts which are bent hairpin shaped in both ends of the reed tube, the rod-shaped contacts are melted into the tube in the way known. The open ends of the hairpins are opposite each other within the tube and hold the ball-shaped armature between them. Their closed, bent ends are located outside the tube. After having been melted in, these ends are separated in a way known, so that four electrically separated contact points are ob tained. The rods formed on either front side of the two contacting points are in parallel in one plane.
- the contact rods located parallel and in one plane are staggered by 90 with respect to the other two contact rods.
- the free ends of the contact rods within the tube, and located opposite each other are chamfered in such a way that the surface obtained by the chamfering shows to the central axis of the tube.
- the contact rod pairs located within a plane are chamfered in a varying angle, so that the ball-shaped armature will be set into a rotating motion during the switching of the contacts, in order to use the entire ball surface for contact making during the numerous switchings to be performed during its life expectancy.
- An advantage of the invention is that the reed has a small design and can be used as a contact for push buttons or push button controlled systems.
- a further advantage is that by using equal construction elements within a reed contact, a suitable connection may be made within a circuit by connecting the lugs protruding from the tube in a make-contact, a break-contact, or a switchover-contact configuration.
- FIG. 1 shows a reed contact according to the invention seen from the side in section and essentially enlarged
- FIG. 2 shows a contact according to FIG. 1 in perspective view
- FIG. 3 shows a cross-section through the contact in FIG. 2, taken along the line AA.
- FIG. 1 shows a reed armature tube marked with the FIGURE 1.
- the reed tube may be made of glass into which on either front side 2 and 3 respectively hair-pin-bent contact elements 4 and 5 are meltedin. Within the tube between these contact elements 4 and 5, is a ball-shaped armature 6.
- a permanent magnet 7 will be slid in the longitudinal direction of the reed tube in a way knonw.
- the permanent magnet 7 may consist of a longitudinal or rectangular ferrite magnet or of an annular magnet which will be slid over the tube.
- the contact rods 5 and 5" of the contact element 5 are in parallel in one plane. The same applies for the contact rods 4' and 4" of the contact element 4. Within the tube 1, however, these planes between the melting-in point 2 and the melting-in point 3 are vertically to each other.
- the contact rods 4, 4", 5', and 5", are chamfered at their free edges within the tube. The free edges slant in such a way that the surface obtained by the chamfering, as for example shown at the points 8 or 9, shows to the centre axis of the tube and in the longitudinal direction of the tube 1. Besides, the chamfering is made in varying angles as shown at the points 8 and 9.
- the contacting ends of the rods 5' and 5" touch the ball armature in a manner such that the ball is put into a rotating motion during the switching process in order to use the entire ball surface for contact-making during the life of the reed Contact.
- FIG. 2 shows the contact of FIG. 1 in a perspective view.
- the contact elements 4 and 5 will be separated at the points BB after melting-in. If, e.g., a circuit is only connected to both contact rods 4 and 4", the armature 6 bridges these two contact rods at the position of the permanent magnet 7 as shown in FIG. 2, thus obtaining a break-contact between the contact rods 4' and 4". If, on the other hand, the contact rods 5' and 5" are wired into the circuit, there is no connection between these contact rods when armature 6 is held by the flux of the permanent magnet 7 in the position as shown in FIG. 2.
- the armature 6 within the tube 1 will be moved also in direction of the arrow. This motion disconnects the break-contact between the contact rods 4 and 4" and provides a connection between the contact rods 5' and 5" (make-contact). If, for example, the contact rods 4" and 5" are so connected outside the tube, the function of a switch-over contact is obtained without any change of the interior design of the contact.
- the contact can be alternately used as break-contact only, as make-contact only, as breakand make-contact, or as a switch-over-contact.
- FIG. 3 shows, without the ball-shaped armature 6, a cross-section taken along the line AA of FIG. 2.
- the contact element rods 5' and 5" are parallel in one plane and are vertical to the plane formed by the contact rods 4 and 4".
- the contact elements 4 and 5, and the ball-shaped armature 6 consist of a material which is magnetizable and which has an expansion coeflicient that is adapted to the glass.
- the contact elements 4 and 5, and the ball-shaped armature 6 are surface-treated according to a suitable method in order to make a suitable electrical conductivity, particularly at the contact-making points.
- a glass reed type contact assembly comprising an elongated glass envelope having a pair of rods sealed into each end of the envelope, each of said rods being oriented to provide a pair of spaced parallel rods inside the envelope, the ends of said rods forming four separate electrical contacts outside the envelope, a ball-shaped armature inside the envelope positioned to roll between said four electrical contacts, and means comprising a permanent magnet outside said envelope to control the position of said ball armature wherein the contact ends of said rods are chamfered to provide tangential surfaces for touching said ball when it makes contact therewith, the contact ends of said rods being chamfered at different angles to cause said ball armature to rotate during the switching process.
- each of said pairs of rods form two contacts which are side by side in one plane.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Switches That Are Operated By Magnetic Or Electric Fields (AREA)
- Thermally Actuated Switches (AREA)
- Push-Button Switches (AREA)
- Linear Motors (AREA)
- Manufacture Of Switches (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US368535A US3261942A (en) | 1962-10-20 | 1964-05-19 | Reed contact with ball-shaped armature |
Applications Claiming Priority (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEST19872A DE1219588B (de) | 1962-10-20 | 1962-10-20 | Schutzrohrkontakt mit Kugelanker |
FR916162A FR1347245A (fr) | 1962-10-20 | 1962-11-21 | Relais électromagnétiques |
DEST21064A DE1228328B (de) | 1962-10-20 | 1963-09-12 | Schutzrohrkontakt |
DEST16372U DE1895214U (de) | 1963-09-14 | 1963-09-14 | Relais mit schutzrohrkontakten. |
DEST21101A DE1300607B (de) | 1962-10-20 | 1963-09-21 | Druck- und Zugtaste mit Schutzrohrankerkontakt |
US368535A US3261942A (en) | 1962-10-20 | 1964-05-19 | Reed contact with ball-shaped armature |
DEST024201 | 1965-07-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3261942A true US3261942A (en) | 1966-07-19 |
Family
ID=27544930
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US368535A Expired - Lifetime US3261942A (en) | 1962-10-20 | 1964-05-19 | Reed contact with ball-shaped armature |
US393996A Expired - Lifetime US3289129A (en) | 1962-10-20 | 1964-09-02 | Push and pull key with reed contacts |
US563186A Expired - Lifetime US3356948A (en) | 1962-10-20 | 1966-07-06 | Electrical switching unit, controlled through permanent magnets with a reed contact, having a freely movable armature |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US393996A Expired - Lifetime US3289129A (en) | 1962-10-20 | 1964-09-02 | Push and pull key with reed contacts |
US563186A Expired - Lifetime US3356948A (en) | 1962-10-20 | 1966-07-06 | Electrical switching unit, controlled through permanent magnets with a reed contact, having a freely movable armature |
Country Status (7)
Country | Link |
---|---|
US (3) | US3261942A (fr) |
BE (1) | BE684763A (fr) |
CH (1) | CH410113A (fr) |
DE (3) | DE1219588B (fr) |
FR (5) | FR1347245A (fr) |
GB (3) | GB983615A (fr) |
NL (2) | NL6410889A (fr) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3347995A (en) * | 1963-08-03 | 1967-10-17 | Int Standard Electric Corp | Make before break ball type armature reed relay switching network |
US3356948A (en) * | 1962-10-20 | 1967-12-05 | Int Standard Electric Corp | Electrical switching unit, controlled through permanent magnets with a reed contact, having a freely movable armature |
US3361995A (en) * | 1966-03-24 | 1968-01-02 | Gen Equip & Mfg | Magnetic proximity switch |
US3454724A (en) * | 1964-05-20 | 1969-07-08 | Int Standard Electric Corp | Key controlled direct current signalling systems |
US3768600A (en) * | 1971-11-08 | 1973-10-30 | Safety Skate Co Inc | Silencer for boxcar retarders |
US4128823A (en) * | 1975-12-25 | 1978-12-05 | Fujitsu Limited | Switch |
US4191935A (en) * | 1978-02-10 | 1980-03-04 | Bell Telephone Laboratories, Incorporated | Twin path reed spring relay construction |
US4238748A (en) * | 1977-05-27 | 1980-12-09 | Orega Circuits Et Commutation | Magnetically controlled switch with wetted contact |
US4481389A (en) * | 1982-08-02 | 1984-11-06 | Liquid Level Lectronics, Inc. | Magnetic control device |
US20070246672A1 (en) * | 2004-04-02 | 2007-10-25 | Sidel Participations | Valve Comprising a Magnetic Control Device |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1280412B (de) * | 1965-05-20 | 1968-10-17 | Standard Elektrik Lorenz Ag | Bistabil arbeitendes Relais mit Schutzrohrankerkontakten |
NL6604016A (fr) * | 1966-03-26 | 1967-09-27 | ||
DE1665441B1 (de) * | 1966-08-18 | 1971-05-06 | Ramstetter Otto Dipl Ing | Magnetisch betaetigter elektrischer Schalter |
JPS5228994B1 (fr) * | 1971-05-10 | 1977-07-29 | ||
FR2392483A1 (fr) * | 1977-05-25 | 1978-12-22 | Renault | Contacteur a commande magnetique |
FR2992769B1 (fr) * | 2012-06-27 | 2014-08-08 | Schneider Electric Ind Sas | Contact electrique |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2715166A (en) * | 1952-12-03 | 1955-08-09 | Ibm | Electromagnetic relay |
US2732464A (en) * | 1956-01-24 | Electrical contacting devices | ||
US2892051A (en) * | 1956-02-20 | 1959-06-23 | Gems Company | Flow indicator |
US2980776A (en) * | 1957-04-29 | 1961-04-18 | Tann Corp | Electric control device |
US2995635A (en) * | 1958-02-24 | 1961-08-08 | Tann Corp | Electric control device |
US3059074A (en) * | 1957-04-09 | 1962-10-16 | Int Standard Electric Corp | Electrical switching device and method for making |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3103562A (en) * | 1963-09-10 | Magnetic ball switch for electric circuits | ||
DE1116815B (fr) * | 1961-11-09 | |||
US2859297A (en) * | 1954-10-28 | 1958-11-04 | Boeing Co | Magnetically self-returning ball armature relays |
DE1748664U (de) * | 1956-11-23 | 1957-07-18 | Siemens Ag | Anordnung zur betaetigung von schutzrohrkontakten. |
GB910784A (en) * | 1957-04-09 | 1962-11-21 | Standard Telephones Cables Ltd | Electromagnetically operable sealed switch |
US2935585A (en) * | 1957-04-22 | 1960-05-03 | Sigma Instruments Inc | Polarized electromagnetic relay |
US3015707A (en) * | 1957-11-19 | 1962-01-02 | Bell Telephone Labor Inc | Relay |
US2999914A (en) * | 1957-12-23 | 1961-09-12 | Cons Electrodynamics Corp | Magnetic switch |
DE1810380U (de) * | 1959-09-23 | 1960-04-28 | Siemens Ag | Drucktaste zur betaetigung mehrerer schutzrohrkontakte. |
DE1835873U (de) * | 1961-06-07 | 1961-08-03 | Telefonbau & Normalzeit Gmbh | Tastatur mit schutzrohrkontakten. |
DE1838753U (de) * | 1961-07-21 | 1961-10-05 | Telefonbau & Normalzeit Gmbh | Taste mit schutzrohrkontakten. |
DE1895214U (de) * | 1963-09-14 | 1964-06-25 | Standard Elektrik Lorenz Ag | Relais mit schutzrohrkontakten. |
DE1219588B (de) * | 1962-10-20 | 1966-06-23 | Standard Elektrik Lorenz Ag | Schutzrohrkontakt mit Kugelanker |
-
1962
- 1962-10-20 DE DEST19872A patent/DE1219588B/de active Pending
- 1962-11-21 FR FR916162A patent/FR1347245A/fr not_active Expired
-
1963
- 1963-09-12 DE DEST21064A patent/DE1228328B/de active Pending
- 1963-09-21 DE DEST21101A patent/DE1300607B/de active Pending
- 1963-10-16 CH CH1271063A patent/CH410113A/de unknown
- 1963-10-18 GB GB41241/63A patent/GB983615A/en not_active Expired
- 1963-10-18 FR FR951107A patent/FR1387074A/fr not_active Expired
-
1964
- 1964-05-19 US US368535A patent/US3261942A/en not_active Expired - Lifetime
- 1964-09-02 US US393996A patent/US3289129A/en not_active Expired - Lifetime
- 1964-09-11 FR FR987865A patent/FR86415E/fr not_active Expired
- 1964-09-18 GB GB38188/64A patent/GB1042810A/en not_active Expired
- 1964-09-18 NL NL6410889A patent/NL6410889A/xx unknown
- 1964-09-21 FR FR988789A patent/FR86428E/fr not_active Expired
-
1966
- 1966-07-06 US US563186A patent/US3356948A/en not_active Expired - Lifetime
- 1966-07-25 NL NL6610418A patent/NL6610418A/xx unknown
- 1966-07-29 BE BE684763A patent/BE684763A/xx unknown
- 1966-07-29 GB GB34207/66A patent/GB1111918A/en not_active Expired
- 1966-07-29 FR FR71555A patent/FR90982E/fr not_active Expired
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2732464A (en) * | 1956-01-24 | Electrical contacting devices | ||
US2715166A (en) * | 1952-12-03 | 1955-08-09 | Ibm | Electromagnetic relay |
US2892051A (en) * | 1956-02-20 | 1959-06-23 | Gems Company | Flow indicator |
US3059074A (en) * | 1957-04-09 | 1962-10-16 | Int Standard Electric Corp | Electrical switching device and method for making |
US2980776A (en) * | 1957-04-29 | 1961-04-18 | Tann Corp | Electric control device |
US2995635A (en) * | 1958-02-24 | 1961-08-08 | Tann Corp | Electric control device |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3356948A (en) * | 1962-10-20 | 1967-12-05 | Int Standard Electric Corp | Electrical switching unit, controlled through permanent magnets with a reed contact, having a freely movable armature |
US3347995A (en) * | 1963-08-03 | 1967-10-17 | Int Standard Electric Corp | Make before break ball type armature reed relay switching network |
US3454724A (en) * | 1964-05-20 | 1969-07-08 | Int Standard Electric Corp | Key controlled direct current signalling systems |
US3361995A (en) * | 1966-03-24 | 1968-01-02 | Gen Equip & Mfg | Magnetic proximity switch |
US3768600A (en) * | 1971-11-08 | 1973-10-30 | Safety Skate Co Inc | Silencer for boxcar retarders |
US4128823A (en) * | 1975-12-25 | 1978-12-05 | Fujitsu Limited | Switch |
US4238748A (en) * | 1977-05-27 | 1980-12-09 | Orega Circuits Et Commutation | Magnetically controlled switch with wetted contact |
US4191935A (en) * | 1978-02-10 | 1980-03-04 | Bell Telephone Laboratories, Incorporated | Twin path reed spring relay construction |
US4481389A (en) * | 1982-08-02 | 1984-11-06 | Liquid Level Lectronics, Inc. | Magnetic control device |
US20070246672A1 (en) * | 2004-04-02 | 2007-10-25 | Sidel Participations | Valve Comprising a Magnetic Control Device |
US7690625B2 (en) * | 2004-04-02 | 2010-04-06 | Sidel Participations | Valve comprising a magnetic control device |
Also Published As
Publication number | Publication date |
---|---|
FR1347245A (fr) | 1963-12-27 |
FR1387074A (fr) | 1965-01-29 |
BE684763A (fr) | 1967-01-30 |
CH410113A (de) | 1966-03-31 |
DE1219588B (de) | 1966-06-23 |
NL6610418A (fr) | 1967-01-31 |
DE1300607B (de) | 1969-08-07 |
FR86428E (fr) | 1966-02-04 |
FR86415E (fr) | 1966-02-04 |
GB1111918A (en) | 1968-05-01 |
US3356948A (en) | 1967-12-05 |
DE1228328B (de) | 1966-11-10 |
GB1042810A (en) | 1966-09-14 |
NL6410889A (fr) | 1965-03-22 |
GB983615A (en) | 1965-02-17 |
US3289129A (en) | 1966-11-29 |
FR90982E (fr) | 1968-03-22 |
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