US3099508A - Cathode ray tube socket - Google Patents

Description

July 30, 1963 M. SCHLEE CATHODE RAY TUBE SOCKET Filed June 29, 1959 FlG.2.

INVENTORI MATTHEW SCHLEE, BY W 15 ATTORNEY.

IIIII" United States Patent 3,099,508 CATHODE RAY TUBE SOCKET Matthew Schlee, Liverpool, N.Y., assignor to General Electric Company, a corporation of New York Filed June 29, 1959, Ser. No. 823,380 1 Claim. (Cl. 339-193) This invention relates to a cathode ray tube socket and more particularly to a tube socket of this type in which the external electrical connections are made thereto by dip soldering techniques.

Present cathode ray picture tube sockets generally employ a two piece construction which requires the use of a back plate which is secured to the socket structure by screws, rivets or other means. These sockets are expensive, and do not lend themselves to the mass production techniques utilized in assembling electronic apparatus, such as television receivers.

It is an object of this invention to provide an improved cathode ray tube socket which readily lends itself to mass production techniques in assembling electronic equipment, yet is less expensive than known types of sockets.

A further object of this invention is to provide an improved cathode ray tube socket which is simple and easy to assemble.

In carrying out this invention, a cathode ray tube socket is provided having a one piece molded casing of insulating material of generally cylindrical shape with a base member therein. The base member is provided with an inner ring of spaced perforations and an outer ring of spaced perforations with the inner and outer rings of perforations being in radial alignment. A plurality of hollow dip solder terminal members are mounted in the outer ring of spaced perforations, and a plurality of tube pin contact members are mounted in the inner ring of spaced perforations. The tube pin contact members have extending tongue portions which are adapted to be bent into the dip solder terminal members. Accordingly, when the external electrical leads are inserted in the dip solder terminals and are soldered thereto the tongue portions of the tube pin contact members are also soldered thereto thereby providing an electrical connection between the elegtrical leads and the pin terminals.

These and other objects and advantages of this invention may be more clearly understood from the following description taken in connection with the accompanying drawings, and its scope will be apparent from the appended claim.

In the drawings,

FIGURE 1 shows a top view of the improved cathode ray tube socket embodied in this invention,

FIGURE 2 shows -a side View, partly in section, of the improved cathode ray tube socket of FIGURE 1, and

FIGURE 3 shows the tube pin contact members utilized in the cathode ray tube socket of this invention.

Referring now to the drawings, a cathode ray tube socket is shown of generally cylindrical shape. The tube socket 10 has a base portion with an intermediate portion of the base enlarged to form a seat 30. An opening 12 extends through the base member 15 and a key way 14 is provided therein for providing alignment for a cathode ray picture tube which is adapted to be inserted in the socket 10. An inner ring of spaced perforations 16 extends through the base member 15 and the seat 30. An outer ring of spaced perforations 18, concentric to the inner ring, is also provided in the base member. The inner perforations 16 and the outer perforations 18 are aligned radially such that each inner perforation has a corresponding and cooperating outer perforation. A dip solder terminal 26 is mounted in each of the perforations ice 13. The dip solder terminal 26- has a conical shape on one end portion thereof, as will best be seen in FIGURE 2, With openings therein which allows solder to enter the dip solder terminal.

A tube pin contact member 20, as shown in FIGURE 3, is mounted in the inner perforations 16. The tube pin contact member 20 has an eyelet 22, which is adapted to be mounted in the perforations 16 of the seat 30 on one end portion thereof, and a tongue portion 24 on the other end portion thereof. A recessed portion or channel 28 is provided between the inner and outer openings in the base member to accommodate the tongue portion 24 of the tube pin contact member 20. A plurality of ribs 32 are also provided which separate the pairs of inner and outer perforations.

In assembling the socket 10, the tongue portions 24 of the tube pin contact members are bent in and extend into the dip solder terminals 26. The channel 28 between the inner perforation 16 and the outer perforation 18 provides a seat for the tongue member 24. As will best be seen in FIGURE 2, in its assembled position the tongue 24 of the tube pin contact member extends well into the conical portion of the dip solder terminal 26. External electrical leads may then be inserted down into the conical portion of the dip solder terminals and the entire socket is then immersed in solder to a depth sufficient to solder the external leads, the tongue 24, and the dip solder terminal 26. A doughnut shaped solder pot may be used in order to prevent the solder from running into the eyelets 22 of the tube pin contact members 20.

Accordingly, in one dip soldering operation both the external electrical connections and the connections between the tube pin contact members and the dip solder terminals are accomplished at the same time. This simplifies the socket structure and facilitates making external connections thereto. In accordance with the applicants'invention no back plate, screws, rivets or other means are required for mounting the dip solder terminals or the tube pin contact members to the socket which cuts the cost of the socket considerably.

Since other modifications and changes varied to fit particular operating requirements and environments will be apparent to those skilled in the art, the invention is not considered limited to the examples chosen for purposes of disclosure and covers all modifications and changes which do not constitute departures from the true spirit and scope of this invention.

What I claim as new and desire to secure by Letters Patent of the United States is:

A cathode ray tube socket adapted to receive the terminal pins extending from the base of a cathode ray tube, said socket comprising a one-piece casing of insulating material of general cylindrical shape with a base member therein to provide a seating surface for said base of said cathode ray tube, an inner ring of spaced perforations in said base member, each perforation having a shoulder surface formed therein, said shoulder surface facing said base of said cathode ray tube, and an outer ring of spaced perforations in said base member, a plurality of hollow dip solder terminal members mounted in said outer ring, a plurality of tube pin contact members snugly mounted in said inner ring, each pin contact member having a first edge adjacent said seating surface and a second edge in contact with said shoulder surface, and a tongue portion extending from said second edge, said tongue portions of said tube pin contact members overlying portions of said base member inter-mediate said inner and outer rings on the side of said base member opposite said seating surface for holding said second edges of said pin contact members against said shoulder sur- 4 $3065 and extending into said hollow dip solder terminal References Cited in the file of this patent members whereby said tongue portions are soldered in UNITED STATES PATENTS said dip solder terminal members when external electrical 2 730 690 Harasek Jan 10 1956 leads are soldered therein to provide an electrical con- 2850714 Pace sel'Jt 1958 nection between the electrical leads and said tube pin 5 2:866:171 Wagn; 1958 contact members. 2,877,441 Narozny Mar. 10, 1959

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