US3525060A - Reed contacts operable by magnetic forces - Google Patents
Reed contacts operable by magnetic forces Download PDFInfo
- Publication number
- US3525060A US3525060A US729991A US3525060DA US3525060A US 3525060 A US3525060 A US 3525060A US 729991 A US729991 A US 729991A US 3525060D A US3525060D A US 3525060DA US 3525060 A US3525060 A US 3525060A
- Authority
- US
- United States
- Prior art keywords
- contact
- reed
- contacts
- tube
- reed tube
- 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
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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
- H01H51/287—Details of the shape of the contact springs
-
- 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
- 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
- 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
- H01H1/24—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting
- H01H2001/247—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting using an elastic hinge, the contact being composed of rigid parts connected by thinned flexible hinge parts
Definitions
- the invention relates to sets of reed contacts operable by magnetic forces, whereby several sets of contacts are arranged in a common reed tube and wherein the contact elements per set are of different lengths.
- Reed contacts in which several contact sets are provided either side by side or one above the other in a common reed tube are known and have been used for the through-connection of multi-wire communications in place of a plurality of individual reed contacts.
- reed contact arrangements comprising a plurality of contact elements in a common reed tube.
- the contact elements are uniquely positioned to be actuated independently from each other either by electrical coils or by permanent magnets.
- a related object of the present invention is to position the operating air gaps of the contact sets in the reed tubes in different planes intersecting the axis of the length of the reed tube.
- At least two make-contact sets are provided within a reed tube.
- the contact sets are formed by an equal pair of contact elements whereby the movable contact element is relatively long and the stationary counter-contact is correspondingly short.
- the contact elements are inserted into the reed tube so that their operating air gaps are located at opposite ends of said reed tube.
- the contact elements are formed as blades.
- the movable blades have a constriction near the point of the elements entry into the tube.
- the constriction has defined resilient properties.
- the contact-making ends of the blades may be reinforced, in order to obtain defined magnetic properties.
- the contact elements of the contact sets are designed as springs and pins with a round cross-section, respectively.
- the contact-making end of the movable spring is shaped in the form of a helix or a reinforced cup surrounding the stationary counter-contact pin.
- Another embodiment of the invention provides that the contact elements face eath other as stationary contact pins, whereby one of the contact pins is connected with a contact-making piece, borne on a helical spring and moved through the magnetic field axially in the direction of the counter-contact pin.
- the contact arrangements included in a reed tube are actuated in timely sequence by a shiftable permanent magnet par ticularly by an annular-shaped permanent magnet, enclosing the reed tube.
- an electric coil is arranged in the plane determined by the position of each of the operating air gaps.
- the coils enclosing the reed tube and actuating the contact arrangements act either in cooperation with each other or independently, according to the circuitry of the excitation windings. Thereby, at least one coil may have an additional winding.
- an electric coil is provided only at one end of the reed tube.
- the excitation of the coil operates the contact points at that end of the reed tube.
- the electromotive force moves an annular permanent magnet, sliding on the reed tube and supported by a spring. The magnets position depends on the excitation of the coil. The magnet operates the contacts provided at the opposite end of the reed tube.
- the invention is not limited to designs comprising simple make-contacts. Also, switch-over contacts or makemake contacts may be used, as well as every desired combination of such contact arrangements may be inserted into the common reed tube as described above.
- the reed contact arrangement described shows considerable advantages. Several contacts may be arranged in a common reed tube side by side or one above the other juxtaposed more closely than is possible for individual contacts. The costs per contact arrangement are reduced substantially and the production problems are minimized. The arrangement of the operating air gaps of the contacts within the reed tube in different planes, intersecting the longitudinal axis of the reed tube, permits a plurality of possible applications and circuits, partly mentioned in the description and shown on the drawings.
- FIG. 1 shows a reed tube with blade-type armatures, actuated by a permanent magnet
- FIGS. 2 and 3 show diflerent designs of the Contact blades
- FIG. 4 shows another design of the reed contact with blade-type armatures, actuated by electric coils
- FIG. 5 shows a reed contact having contact armatures designed as springs or pins
- FIG. 6 shows another design of a reed contact, the contact armatures and stators designed as springs or pins respectively, actuated by an electric coil and by a permanent magnet;
- FIG. 7 shows a reed contact with stationary contact pins and a contact piece, borne in a helical spring, actuated by electric coils.
- FIG. 1 shows a reed contact having within a common reed tube 1 two make-contacts.
- Each contact arrangement consists of a long contact blade 2 movable by the magnetic field, and a stationary short counter-contact blade 3.
- the contact blades are melted into the reed tube 1 in such a way that at one reed tube end a long, movable contact blade 2 is arranged beside a short, stationary contact blade 3.
- the right hand contacts are shown operated by a movable permanent magnet which can be moved from the dotted line position to the full line position.
- said blades may be provided near the fixing point in the reed tube 1 with a constriction 4 (FIG. 2). Also, both blades 2 and 3 may be reinforced at their ends in order to obtain defined magnetic properties (FIG. 3).
- Reed contact elements wherein the long contact blades 2 are provided with constrictions 4', are shown in FIG. 4. These contact elements have cooperating contact blades, or elements 3' which are located in one plane.
- the cooperating blades are, of course, not inserted into the reed tube 1 as shown on the drawing for a better view, but are inserted into the reed tube upright and side by side, in order to save space.
- FIG. 5 shows another reed contact arrangement.
- the contact elements are designed as springs or pins.
- the end of the long contact spring 5 of each contact set is helix-shaped and encloses the rigid or stationary counter-contact element pin 6.
- Such contact springs 5 ofler the advantage with respect to the production technique that the exactness required for melting them into the reed tube 1 is not as rigorous as for simple blade-type contacts.
- FIG. 6 shows a reed contact similar to the one shown in FIG. 5, however, its long contact springs 5 are reinforced cup-shaped at their contact-making ends.
- FIG. 7 Another design of a reed contact arrangement is shown in FIG. 7.
- the contact elements inside the reed tube 1 face each other as fixed or stationary pins 7, 8.
- the longer pin of each contact arrangement is connected to a contact piece 10 via a helical spring 9.
- the piece 10 is moved through the magnetic field axially towards the counter-contact pin 8.
- the designs of reed contacts described in the FIGS. 1 to 7 and other arrangements based upon the same principle of the staggered operating air gaps, may have switch-over contacts or make-make contacts, and may be actuated magnetically in the most varying way.
- an annular-shaped permanent magnet 11 is suitable, such as shown in FIG. 1.
- the annular-shaped permanent magnet 11 slides on the reed tube 1 thereby alternatively operating one of the two contact arrangements in the reed tube 1.
- the switchover process depends on the speed of the moving magnet, therefore it would be disadvantageous to have to remove the permanent magnet 11 from abutting a ferromagnetic adhesive metal sheet 12. Based on the pressure exerted on the key or push-button the speed of the magnet and thus, the switch-over process can be predetermined.
- FIG. 7 shows an example of another contact wherein on planes 10 determined by the position of the operating air gaps, electric coils 13, 14 are arranged, enclosing the reed tube 1. Each coil 13 and 14 may be used for an independent actuation of the associated contact arrangement.
- one of the coils e.g., 13', or both coils are provided with an additional winding 15
- the most varied interdependent operations of the contacts arranged in the reed tube 1 may be attained according to the inter-connection of the individual windings.
- FIG. 6 Another possibility of a magnetic operation is shown in FIG. 6.
- the electric coil 13 actuates the contact :point,
- an annularshaped permanent magnet 11 is slidably moved on the reed tube 1.
- the permanent magnet 11 is supported by a spring 16 and is moved against the force of the spring 16, if the coil 13 is excited in the opposite sense, thereby operating the other contact point.
- a reed contact arrangement operable by magnetic forces
- said arrangement comprising a plurality of contact sets arranged in a common reed tube,
- said contact sets each including a stationary element and a movable element
- said contact making end of the movable element being shaped to enclose the contact making end of the stationary element
- each of said contact sets including operationing air and the operating air gaps being arranged in different planes intersecting the longitudinal axis of said reed tube with said air gaps being spaced apart and at opposite ends of said tube.
- a reed contact arrangement operable by magnetic forces
- said arrangement comprising a plurality of contact sets arranged in a common reed tube,
- each of said contact sets comprising a pair of contact elements
- each pair including a stationary contact element and a movable contact element
- each of said contact elements including an operating air gap
- the operating air gaps being in difiierent planes intersecting the longitudinal axis of said reed tube and at diiferent ends of said tube,
- said coil means comprising at least two coils whereby said contact sets can be operated interdependently or independently of each other according to the circuitry of said at least two coils.
- a reed contact arrangement operable by magnetic forces
- said arrangement comprising a plurality of contact sets References Cited arrangeim a comm reed UNITED STATES PATENTS each of sa1d contact sets COIl'lPl'lSlIlg a pair of contact elements, 1,603,289 10/1926 ONeill 335--196 X each of said pair of contact elements including a sta- 5 2,203,697 9 Vfi od e et a1.
- each of said contacts including operating air gaps, 3,268,684 8/1966 Keller et the operating air gaps being arranged at different planes 3,3 ,593 /1967 Grengg 335-154 intersecting the longitudinal axis of said reed tube 10 3,348,174 10/1967 Schress 335-205 X and at opposite ends of said reed tube, an electrical coil provided only at one end of said reed FOREIGN PATENTS tube, 637,381 3/1962 ma an annular shaped permanent magnet provided surrounding said tube at the other end thereof, BERNARD A.
- GILH'EANY Primary Examiner spring support means for slidably supporting said magnet on the reed tube whereby the contacts located ENVALL Asslstam Exammer at the coil end of said reed tube are actuated by ex- Us. CL citation of sa1d coil, and
- said magnet being moved along said tube to actuate the said contacts at the magnet end of said tube responsive to said excitation of said coil.
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Contacts (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1614728 | 1967-05-26 | ||
NL6811657A NL6811657A (xx) | 1967-05-26 | 1968-08-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3525060A true US3525060A (en) | 1970-08-18 |
Family
ID=25753714
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US729991A Expired - Lifetime US3525060A (en) | 1967-05-26 | 1968-05-17 | Reed contacts operable by magnetic forces |
Country Status (7)
Country | Link |
---|---|
US (1) | US3525060A (xx) |
AT (1) | AT302461B (xx) |
BE (1) | BE717839A (xx) |
CH (1) | CH489108A (xx) |
DE (1) | DE1614728B1 (xx) |
FR (1) | FR1565264A (xx) |
NL (1) | NL6811657A (xx) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3621417A (en) * | 1970-03-10 | 1971-11-16 | Alarm Products International I | Magnetically responsive switching apparatus |
US3813622A (en) * | 1973-01-09 | 1974-05-28 | R Remington | Axial motion magnetically actuated switch |
US3866007A (en) * | 1973-10-09 | 1975-02-11 | Shlesinger Jr Bernard E | Contact reed with foil-thin intermediate section |
JPS5216573U (xx) * | 1975-07-24 | 1977-02-05 | ||
US4143254A (en) * | 1977-04-25 | 1979-03-06 | Heyrana Pablo M | Waterproof multiple electrical switch assembly |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2951225C2 (de) * | 1979-12-19 | 1982-10-21 | E. Haller & Co, 7209 Wehingen | Federsatz eines Relais mit biegungsgeschwächten Kontaktfedern |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1603289A (en) * | 1922-05-04 | 1926-10-19 | Western Electric Co | Switching device |
US2208697A (en) * | 1938-11-14 | 1940-07-23 | Jim E Kernodle | Curb clearance signal device for automobiles |
US2709728A (en) * | 1950-06-07 | 1955-05-31 | W N Borg Corp | Relay |
US3243541A (en) * | 1963-10-04 | 1966-03-29 | Falco Angelo De | Reed switch with magnwetically responsive reed elements |
US3268684A (en) * | 1964-04-28 | 1966-08-23 | Ibm | Mechanically operable magnetic reed switch |
US3345593A (en) * | 1966-04-25 | 1967-10-03 | Oak Electro Netics Corp | Reed switch contact construction |
US3348174A (en) * | 1964-04-21 | 1967-10-17 | Int Standard Electric Corp | Blade armature contact in sealed housing |
-
1967
- 1967-05-26 DE DE19671614728D patent/DE1614728B1/de active Pending
-
1968
- 1968-04-19 AT AT03810/68A patent/AT302461B/de not_active IP Right Cessation
- 1968-05-17 US US729991A patent/US3525060A/en not_active Expired - Lifetime
- 1968-05-21 CH CH775368A patent/CH489108A/de not_active IP Right Cessation
- 1968-05-22 FR FR1565264D patent/FR1565264A/fr not_active Expired
- 1968-07-10 BE BE717839D patent/BE717839A/xx unknown
- 1968-08-16 NL NL6811657A patent/NL6811657A/xx unknown
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1603289A (en) * | 1922-05-04 | 1926-10-19 | Western Electric Co | Switching device |
US2208697A (en) * | 1938-11-14 | 1940-07-23 | Jim E Kernodle | Curb clearance signal device for automobiles |
US2709728A (en) * | 1950-06-07 | 1955-05-31 | W N Borg Corp | Relay |
US3243541A (en) * | 1963-10-04 | 1966-03-29 | Falco Angelo De | Reed switch with magnwetically responsive reed elements |
US3348174A (en) * | 1964-04-21 | 1967-10-17 | Int Standard Electric Corp | Blade armature contact in sealed housing |
US3268684A (en) * | 1964-04-28 | 1966-08-23 | Ibm | Mechanically operable magnetic reed switch |
US3345593A (en) * | 1966-04-25 | 1967-10-03 | Oak Electro Netics Corp | Reed switch contact construction |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3621417A (en) * | 1970-03-10 | 1971-11-16 | Alarm Products International I | Magnetically responsive switching apparatus |
US3813622A (en) * | 1973-01-09 | 1974-05-28 | R Remington | Axial motion magnetically actuated switch |
US3866007A (en) * | 1973-10-09 | 1975-02-11 | Shlesinger Jr Bernard E | Contact reed with foil-thin intermediate section |
JPS5216573U (xx) * | 1975-07-24 | 1977-02-05 | ||
US4143254A (en) * | 1977-04-25 | 1979-03-06 | Heyrana Pablo M | Waterproof multiple electrical switch assembly |
Also Published As
Publication number | Publication date |
---|---|
FR1565264A (xx) | 1969-04-25 |
BE717839A (xx) | 1969-01-10 |
CH489108A (de) | 1970-04-15 |
AT302461B (de) | 1972-09-15 |
DE1614728B1 (de) | 1971-02-18 |
NL6811657A (xx) | 1970-02-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: ALCATEL N.V., DE LAIRESSESTRAAT 153, 1075 HK AMSTE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:INTERNATIONAL STANDARD ELECTRIC CORPORATION, A CORP OF DE;REEL/FRAME:004718/0023 Effective date: 19870311 |