US3293578A - Axially split bobbin with upper, and lower, semi-cylindrical interlocking sections for reed relays - Google Patents

Axially split bobbin with upper, and lower, semi-cylindrical interlocking sections for reed relays Download PDF

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Publication number
US3293578A
US3293578A US519067A US51906766A US3293578A US 3293578 A US3293578 A US 3293578A US 519067 A US519067 A US 519067A US 51906766 A US51906766 A US 51906766A US 3293578 A US3293578 A US 3293578A
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bobbin
reed
sections
terminals
section
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US519067A
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Robert K Else
Anthony J Wilkis
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Automatic Electric Laboratories Inc
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Automatic Electric Laboratories Inc
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    • 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
    • H01H51/281—Mounting of the relay; Encapsulating; Details of connections

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  • the reed relay according to this invention is one which has been designed specially with ease of fabrication in mind, but without sacrifice of performance features which are essential in reed relays, e.g., desirable and uniform operating characteristics, reliability and long life, to name just a few.
  • a preferred embodiment of the reed relay according to this invention which is shown in FIG. 3 of the drawings, has, as one of its features an axially split bobbin with upper and lower, semi-cylindrical interlocking sections. As shown in that figure, this reed relay is designed for printed circuit board mounting, but other types of mounting may also be used.
  • the lower bobbin section of the reed relay has at each end thereof lower flange halves. integrally molded therewith are two platform portions, one on each end of the bobbin section.
  • the upper bobbin section which also comprises at each end thereof, an upper flange half, has integrally molded therewith four arms, two extending from each end of the bobbin section. Straight strip terminals are inserted into the platform portions and the arms. Reed switches are inserted into each bobbin section and welded to respective terminals so as to retain the reed switches in their respective bobbin sections.
  • the upper and lower bobbin sections, each having two reed switches therein, are then joined.
  • Terminals from the upper bobbin section are received and extend through apertures in the platform portions of the lower bobbin section.
  • the bobbin area defined by the mated flange halves is then wound with an energizing coil.
  • FIG. 1 is a perspective view of the lower bobbin section of a reed relay according to the invention.
  • FIG. 2 is a perspective view of the upper bobbin section of a reed relay according to the invention.
  • FIG. 3 is an end view of an assembled reed relay, according to the invention, which is shown plugged into a printed circuit board.
  • lower bobbin section has at each end thereof a lower flange half, such as 24. Extending from each lower flange half 24 is a platform portion 12. As can be seen, there are a plurality of apertures such as 13 passing through each platform portion. Terminals such as 14 are also inserted into platform portions 12. These terminals 14 are used to connect up reed switches such as 16, located in lower bobbin section 10 on either side of dividing rib 15. The free ends of reed members such as 17 of the reed switches are preferably welded to terminals 14, however, any suitable method of connection may be used.
  • Coil terminals such as 22 are also provided as termination points for coil 23, shown in FIG. 3, which is wrapped about the assembled relay between the mated flange halves, such as 24 and 25.
  • FIG. 2 shows the upper bobbin section 11 which will be joined with lower bobbin section 10, as shown in FIG. 3.
  • Upper bobbin section 11 has at each end thereof upper flange halves such as 25, and extending therefrom and integrally formed therewith, arms such as 18. Terminals such as 19 are inserted into and supported by arms 18 as shown. These terminals 19 are used to connect up reed switches, such as 16, located in upper bobbin section 11 on either side of dividing rib 15.
  • FIG. 3 shows an assembled reed relay according to the invention.
  • This particular embodiment is shown plugged into printed circuit board 26 where it may be used as a crosspoint device in a switching matrix as shown, for example in US. Patent 3,188,423, assigned to the same assignee.
  • the relay according to the invention is not limited to this use.
  • upper bobbin section 11 has been joined with lower bobbin section 10 so that projections such as 28, formed as part of the upper bobbin section, fit into shoulder portions 27, formed as part of the lower bobbin section.
  • the sections are locked into position by means of pegs such as 21 molded on upper bobbin section 11, and apertures 20 formed in lower bobbin section 10.
  • the reed relay according to this invention was designed so that it could be fabricated by automatic means.
  • each bobbin section is molded separately. This enables the manufacturer to use a twoway mold rather than the more complex four-way draw mold. Thus a savings in time and cost can be achieved immediately.
  • straight strip terminals are automatically inserted into both the platform portions 12 on lower bobbin section 10 and arms 18 extending from upper bobbin section 11. Terminals 19 inserted into arms 18 are longer than terminals 14 because they must be able to pass through apertures 13 upon assembly of the two bobbin sections. These terminals 19 are also bent after they are inserted in arms 18 to accommodate the reed switches 16, as shown in FIG. 2 of the drawings.
  • the reed switches are automatically inserted into their respective bobbin sections, and welded at the free ends of their reed members 17 to respective terminals. It will be noted that each bobbin section is independent of the other section. Once the Welding is completed, the reed switches are secure in their respective bobbin sections. At this time, the upper bobbin section is locked in place on the lower bobbin section as shown in FIG. 3 of the drawings. Terminals 19 pass through apertures 13 in platform portions 12, respectively and pegs 21 are inserted into apertures 20.
  • the energizing coil 23, shown in FIG. 3, can be automatically wound about the bobbin area between mated flange halves 24, 25 respectively, and terminated at coil terminals 22. If more than one coil is wound about the relay bobbin, insulation can also be automatically wound between such windings as necessary.
  • the relay according to the invention is easily assembled automatically, thereby saving cost and time which would normally be spent on manual assembly of an ordinary reed-type relay.
  • a reed relay comprising:
  • said upper and lower bobbin sections respectively having upper and lower mating flange halves on each end thereof, each of said lower flange halves having a platform portion extending therefrom with at least one aperture therethrough,
  • said upper bobbin section having upper flange halves on each end thereof;
  • At least two reed switches located within said upper and lower bobbin sections, respectively;
  • each of said upper flange halves includes at least one arm extending therefrom and wherein one of said second pair of terminals is mounted in and extends through each of said arms, respectively.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)

Description

Dec. 20, 1966 R. K. ELSE ETAL 3,293,578
AXIALLY SPLIT BOBBIN WITH UPPER, AND LOWER, SEMI-CYLINDRICAL INTERLOCKING SECTIONS FOR REED RELAYS Filed Jan. 6, 1966 INVENTORS l2 2 'n" I 1! ROBERT K. ELSE 2 I iii! 5 [Mk 26 BY ANTHONY J. WILKIS Z I! I ll;
UL W V &
AGENT United States Patent 3 293,578 AXIALLY SPLIT BdBBIN WITH UPPER, AND
LOWER, SEMI-CYLINDRICAL INTERLOCK- ING SECTIONS FOR REED RELAYS Robert K. Else, Glen Ellyn, and Anthony J. Wilkis, Downers Grove, TEL, assignors to Automatic Electric Laboratories, Inc., Northlake, IlL, a corporation of Delaware Filed Jan. 6, 1966, Ser. No. 519,067 3 Claims. (Cl. 335152) This invention relates to relays and more particularly to reed-type relays.
In the design of new products, ease of manufacture is an important consideration. Frequently an essential requirement is that, in order to reduce the cost of manufacturing, the product lends itself readily to automated fabrication. This is particularly true in the case of components, such as reed relays, large amounts of which may be required for an individual system installation.
The reed relay according to this invention is one which has been designed specially with ease of fabrication in mind, but without sacrifice of performance features which are essential in reed relays, e.g., desirable and uniform operating characteristics, reliability and long life, to name just a few.
Accordingly, it is a primary object of this invention to provide an economical, improved reed type relay which lends itself well to automated fabrication.
A preferred embodiment of the reed relay according to this invention, which is shown in FIG. 3 of the drawings, has, as one of its features an axially split bobbin with upper and lower, semi-cylindrical interlocking sections. As shown in that figure, this reed relay is designed for printed circuit board mounting, but other types of mounting may also be used.
The lower bobbin section of the reed relay according to this embodiment has at each end thereof lower flange halves. integrally molded therewith are two platform portions, one on each end of the bobbin section. The upper bobbin section which also comprises at each end thereof, an upper flange half, has integrally molded therewith four arms, two extending from each end of the bobbin section. Straight strip terminals are inserted into the platform portions and the arms. Reed switches are inserted into each bobbin section and welded to respective terminals so as to retain the reed switches in their respective bobbin sections. The upper and lower bobbin sections, each having two reed switches therein, are then joined.
Terminals from the upper bobbin section are received and extend through apertures in the platform portions of the lower bobbin section. After the sections are joined, the bobbin area defined by the mated flange halves is then wound with an energizing coil.
Other objects and features of the present invention will become more apparent by reference to the following description taken in conjunction with the accompanying drawings of which:
FIG. 1 is a perspective view of the lower bobbin section of a reed relay according to the invention.
FIG. 2 is a perspective view of the upper bobbin section of a reed relay according to the invention.
FIG. 3 is an end view of an assembled reed relay, according to the invention, which is shown plugged into a printed circuit board.
Looking now at FIG. 1, lower bobbin section has at each end thereof a lower flange half, such as 24. Extending from each lower flange half 24 is a platform portion 12. As can be seen, there are a plurality of apertures such as 13 passing through each platform portion. Terminals such as 14 are also inserted into platform portions 12. These terminals 14 are used to connect up reed switches such as 16, located in lower bobbin section 10 on either side of dividing rib 15. The free ends of reed members such as 17 of the reed switches are preferably welded to terminals 14, however, any suitable method of connection may be used.
Coil terminals such as 22 are also provided as termination points for coil 23, shown in FIG. 3, which is wrapped about the assembled relay between the mated flange halves, such as 24 and 25.
FIG. 2 shows the upper bobbin section 11 which will be joined with lower bobbin section 10, as shown in FIG. 3. Upper bobbin section 11 has at each end thereof upper flange halves such as 25, and extending therefrom and integrally formed therewith, arms such as 18. Terminals such as 19 are inserted into and supported by arms 18 as shown. These terminals 19 are used to connect up reed switches, such as 16, located in upper bobbin section 11 on either side of dividing rib 15.
FIG. 3 shows an assembled reed relay according to the invention. This particular embodiment is shown plugged into printed circuit board 26 where it may be used as a crosspoint device in a switching matrix as shown, for example in US. Patent 3,188,423, assigned to the same assignee. However, the relay according to the invention is not limited to this use. Here upper bobbin section 11 has been joined with lower bobbin section 10 so that projections such as 28, formed as part of the upper bobbin section, fit into shoulder portions 27, formed as part of the lower bobbin section. In addition the sections are locked into position by means of pegs such as 21 molded on upper bobbin section 11, and apertures 20 formed in lower bobbin section 10.
As mentioned above, the reed relay according to this invention was designed so that it could be fabricated by automatic means.
A detailed description will now be given of the manner in which a relay according to the invention is automatically assembled.
To begin with, each bobbin section is molded separately. This enables the manufacturer to use a twoway mold rather than the more complex four-way draw mold. Thus a savings in time and cost can be achieved immediately. Next, straight strip terminals are automatically inserted into both the platform portions 12 on lower bobbin section 10 and arms 18 extending from upper bobbin section 11. Terminals 19 inserted into arms 18 are longer than terminals 14 because they must be able to pass through apertures 13 upon assembly of the two bobbin sections. These terminals 19 are also bent after they are inserted in arms 18 to accommodate the reed switches 16, as shown in FIG. 2 of the drawings.
After the terminals are in place, the reed switches are automatically inserted into their respective bobbin sections, and welded at the free ends of their reed members 17 to respective terminals. It will be noted that each bobbin section is independent of the other section. Once the Welding is completed, the reed switches are secure in their respective bobbin sections. At this time, the upper bobbin section is locked in place on the lower bobbin section as shown in FIG. 3 of the drawings. Terminals 19 pass through apertures 13 in platform portions 12, respectively and pegs 21 are inserted into apertures 20.
Finally, the energizing coil 23, shown in FIG. 3, can be automatically wound about the bobbin area between mated flange halves 24, 25 respectively, and terminated at coil terminals 22. If more than one coil is wound about the relay bobbin, insulation can also be automatically wound between such windings as necessary.
Thus, because of the design of the relay according to the invention, it is easily assembled automatically, thereby saving cost and time which would normally be spent on manual assembly of an ordinary reed-type relay.
In addition, once the relay is in use, if it becomes necessary to replace a reed switch, the terminals to which the reed switch is attached are merely severed and the reed switch slides out from either end of the bobbin.
It will be obvious to those skilled in the art that changes and modifications may be made without departing from this invention in its broadest aspects and therefore the aim in the appended claims is to cover all such changes and modifications as in the true spirit and scope of this invention.
What is claimed is:
1. A reed relay comprising:
an axially split bobbin having upper and lower interlocking sections,
said upper and lower bobbin sections respectively having upper and lower mating flange halves on each end thereof, each of said lower flange halves having a platform portion extending therefrom with at least one aperture therethrough,
said upper bobbin section having upper flange halves on each end thereof;
at least two reed switches located within said upper and lower bobbin sections, respectively;
a first pair of terminals connected to said reed switch in said lower bobbin section and mounted in and extending through said two platform portions, respectively;
4 a second pair of terminals supported by said upper bobbin section, connected to said reed switch in said upper bobbin section, and having free ends extending through said apertures in said two platform portions, respectively;
and a coil wound about said bobbin between said flanges.
2. A reed relay as claimed in claim 1 wherein each of said upper flange halves includes at least one arm extending therefrom and wherein one of said second pair of terminals is mounted in and extends through each of said arms, respectively.
3. A reed relay as claimed in claim 1 wherein said lower flange halves each include at least one aperture therein, wherein said upper flange halves each include at least one peg extending therefrom, and wherein upon the joining of said upper and lower bobbin sections, said pegs are received by said apertures, thereby interlocking said bobbin sections.
References Cited by the Examiner UNITED STATES PATENTS 11/1965 Bengtsson ZOO-87 12/1965 Marks 20087

Claims (1)

1. A REED RELAY COMPRISING: AN AXIALLY SPLIT BOBBIN HAVING UPPER AND LOWER INTERLOCKING SECTIONS, SAID UPPER AND LOWER BOBBIN SECTIONS RESPECTIVELY HAVING UPPER AND LOWER MATING FLANGE HALVES ON EACH END THEREOF, EACH OF SAID LOWER FLANGE HALVES HAVING A PLATFORM PORTION EXTENDING THEREFROM WITH AT LEAST ONE APERTURE THERETHROUGH, SAID UPPER BOBBIN SECTION HAVING UPPER FLANGE HALVES ON EACH END THEREOF; AT LEAST TWO REED SWITCHES LOCATED WITHIN SAID UPPER AND LOWER BOBBIN SECTIONS, RESPECTIVELY; A FIRST PAIR OF TERMINALS CONNECTED TO SAID REED SWITCH IN SAID LOWER BOBBIN SECTION AND MOUNTED IN AND EXTENDING THROUGH SAID TWO PLATFORM PORTIONS, RESPECTIVELY; A SECOND PAIR OF TERMINALS SUPPORTED BY SAID UPPER BOBBIN SECTION, CONNECTED TO SAID REED SWITCH IN SAID UPPER BOBBIN SECTION, AND HAVING FREE ENDS EXTENDING
US519067A 1966-01-06 1966-01-06 Axially split bobbin with upper, and lower, semi-cylindrical interlocking sections for reed relays Expired - Lifetime US3293578A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3439301A (en) * 1966-02-03 1969-04-15 Fujitsu Ltd Electromagnetic switch matrix
US3487344A (en) * 1966-12-09 1969-12-30 Nippon Telegraph & Telephone Coordinate switching device embodying electric windings common to columns of magnetic switch elements
US3523262A (en) * 1966-12-24 1970-08-04 Int Standard Electric Corp Relay arrangements with reed contacts
US6480081B1 (en) * 1997-01-30 2002-11-12 Oki Electric Industry Co., Ltd. Shock sensor

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3218407A (en) * 1963-05-16 1965-11-16 Sigma Instruments Inc Circuit control device
US3222758A (en) * 1962-01-31 1965-12-14 Clare & Co C P Method of making a switching assembly

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3222758A (en) * 1962-01-31 1965-12-14 Clare & Co C P Method of making a switching assembly
US3218407A (en) * 1963-05-16 1965-11-16 Sigma Instruments Inc Circuit control device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3439301A (en) * 1966-02-03 1969-04-15 Fujitsu Ltd Electromagnetic switch matrix
US3487344A (en) * 1966-12-09 1969-12-30 Nippon Telegraph & Telephone Coordinate switching device embodying electric windings common to columns of magnetic switch elements
US3523262A (en) * 1966-12-24 1970-08-04 Int Standard Electric Corp Relay arrangements with reed contacts
US6480081B1 (en) * 1997-01-30 2002-11-12 Oki Electric Industry Co., Ltd. Shock sensor

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