JPH0628979U - CRT socket holder - Google Patents

Abstract

(57) [Abstract] [Purpose] An object of the present invention is to obtain a product for completely fixing the socket holder body and the CRT electrode tube portion firmly and securely fixing them. [Structure] A CRT electrode tube portion is inserted into a CRT socket, a tubular socket holder body having a slit is covered between them, and a tightening ring is fitted and held in a ring engaging groove on an outer periphery. In things,
The tightening ring has at least two upper and lower tightening holes, and is composed of a series of fan-shaped holes each having a different center point position, and the ring engaging groove of the socket holder body has an upper step of the ring engaging groove. In addition, a ring locking claw that engages with the upper tightening hole is integrally formed. Then, after inserting the CRT electrode tube portion into the socket holder body, the tightening ring is rotated. At this time, the inner wall of the tightening hole of the tightening ring and the outer wall of the socket holder body are
The diameter of the socket holder body is gradually reduced, and the non-slip concavities and convexities are closely attached to the CRT electrode tube portion while being in contact with each other at least at four to five points or more and remaining generally circular.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a CRT socket holder in which a CRT electrode tube portion is inserted into a CRT socket, a socket holder body is covered between them, and a tightening ring is used for tightening and holding.

[0002]

[Prior art]

 CRTs used in television receivers, computer displays, etc. are equipped with multiple contact pins, of which the low-voltage contact pins are connected to the printed circuit board, and the high-voltage contact pins are lead wires derived from the flyback transformer. CRT socket is used at this time.

A more detailed description will be given with reference to FIGS. 9 to 12. Reference numeral 15 is a CRT electrode tube portion, and 10 is a CRT socket. The socket housing 11 of the CRT socket 10 includes an annular portion 13 having a through hole in the center and a protruding portion 12 provided on the side. A plurality of low-voltage contacts and high-voltage contacts are concentrically arranged in the annular portion 13, and a terminal portion 23 projects downward from the annular flange portion 14 of the socket housing 11.

After the CRT electrode tube portion 15 is inserted into the annular portion 13 of the CRT socket 10, the socket holder body 16 is put on and fixed by the tightening ring 25. More specifically, as shown in FIG. 10, the socket holder body 16 is made up of semicircular holders 18 and 19 connected by a thin integral hinge part 17, which is connected to the base of the CRT electrode tube part 15. And covers the annular flange portion 14 of the socket housing 11. Then, the flange locking claw 22 at the lower end is locked to the annular flange portion 14, and the non-slip irregularities 21 inside the semicircular holders 18 and 19 contact the CRT electrode tube portion 15. Then, the tightening ring 25 fitted in the ring engaging groove 20 on the outside of the semicircular holders 18 and 19 is rotated by 90 degrees or more. Specifically, as shown in FIG. 11, this tightening ring 25 has tightening holes 26 and 27 formed with a radius of 17 mm centered on a point shifted by 0.8 mm from the center. Steps 28 and 29 are formed by. When rotating from the state of FIG. 11 in the direction of the arrow, the semicircular holders 18 and 19 are tightened by the tightening holes 26 and 27 as shown in FIG. 12, the slot 24 is gradually narrowed, and the slip prevention unevenness 21 is formed on the CRT electrode. The CRT socket 10 and the CRT electrode tube portion 15 are fixed to the tube portion 15 in close contact with each other.

[0005]

[Problems to be solved by the device]

 In the conventional socket holder tightening ring 25 as described above, since the tightening holes 26 and 27 are formed with a radius of 17 mm centered on a point shifted by 0.8 mm from the center, an interval of 180 degrees is provided. The line connecting the stepped portions 28 and 29 has the shortest diameter. Therefore, when rotating as shown in FIG. 12, one semi-circular holder 18 is pushed inward inside the step portion 29, and the diameter formed by the semi-circular holders 18 and 19 is gradually narrowed. When it exceeds 180 degrees of rotation, it returns to its original state. However, in such a structure, since the semicircular holders 18 and 19 are pushed in only at two points of the step portions 28 and 29, the contact between the socket holder body 16 and the CRT electrode tube portion 15 is incomplete, Further, since the step portions 28 and 29 for preventing the reverse rotation are formed at an interval of 180 degrees, there is a problem that they may be loosened by vibration or the like.

It is an object of the present invention to provide a socket holder main body and a CRT electrode tube portion which are completely adhered to each other and securely fixed.

[0007]

[Means for Solving the Problems]

 The present invention is to insert a contact of a CRT electrode tube portion into an annular portion of a CRT socket, cover a tubular socket holder body having a slit between the annular portion and the CRT electrode tube portion, and to attach this socket holder. In a structure in which a tightening ring is fitted and held in a ring engaging groove on the outer periphery of the main body, the tightening ring has tightening holes at least in two upper and lower steps, and It consists of a series of fan-shaped holes at different positions.The ring engaging groove of the socket holder body has a ring engaging claw that engages with the upper tightening hole integrally formed on the upper stage of this ring engaging groove. It is a CRT socket holder characterized by the following.

[0008]

[Action]

 Insert the tightening ring into the ring engaging groove of the socket holder body and rotate the tightening ring so that the inner diameter of the socket holder body is at the maximum position. In this state, the flange locking claw is locked to the lower surface of the annular flange portion of the CRT socket. Next, insert the CRT electrode tube into the socket holder and insert the contact into the annular part of the socket housing body. After inserting the contact, rotate the tightening ring. At this time, the inner wall of the tightening hole of the tightening ring and the outer wall of the socket holder body are in contact with each other at least 4 or 5 places and remain generally circular, and the diameter of the socket holder body gradually decreases. The non-slip unevenness is closely fixed to the CRT electrode tube.

[0009]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS. 10 is a CRT socket made of PTB resin or the like, 15 is a CRT electrode tube portion, and 16 is a socket holder body. The socket housing 11 of the CRT socket 10 is formed by integrally forming an annular portion 13 having a through hole in the center thereof and a laterally protruding portion 12. A low voltage contact and a high voltage contact are concentrically arranged in the annular portion 13. The terminal portions 23 of these contacts are bent to project from the annular flange portion 14 below the annular portion 13, and are inserted into a printed wiring board (not shown) or the like for solder connection.

As shown in FIG. 5 and FIG. 6, the socket holder body 16 is a tubular shape that is open vertically, has a slit 24 for tightening and escaping in the vertical direction, and has a vertical concave portion 32 and a vertical convex portion. 6 and 33 are alternately formed so that the inner walls of the plurality of vertical recesses 32 are continuous to form a small diameter portion 30 for surrounding the CRT electrode tube portion 15, and the inner walls of the vertical protrusions 33 are continuous. To form a large diameter portion 31 for surrounding the annular flange portion 14 of the annular portion 13. At the upper end of the vertical recessed portion 32, a ring locking claw 36 protruding outward is provided, and an anti-slip concavity and convexity 21 protruding inward is provided. A ring engaging groove 20 is formed between the ring engaging claw 36 and the upper end 34 of the convex portion of the vertical convex portion 33. A brim locking claw 22 is formed at the lower end of the vertical convex portion 33 so as to project inward. The brim locking claw 22 and the lower end 35 of the recess of the small diameter portion 30 form the annular brim portion 14. Be caught. The ring locking claw 36 has a first ring locking claw 36a, a second ring locking claw 36b, a third ring locking claw 36c, a fourth ring locking claw 36d, and a fifth ring locking claw 36a at six locations around the entire circumference. The ring locking claw 36e and the sixth ring locking claw 36f are formed such that their outer circumferences are substantially circular. Similarly, the ring engaging groove 20 also has a first ring engaging groove 20a, a second ring engaging groove 20b, a second ring engaging groove 20b The third ring engagement groove 20c, the fourth ring engagement groove 20d, the fifth ring engagement groove 20e, and the sixth ring engagement groove 20f are formed such that their outer circumferences are substantially circular.

The ring engaging groove 20 is, specifically, a semi-circular portion formed by the first ring engaging groove 20a, the second ring engaging groove 20b, and the third ring engaging groove 20c from the center upward in the drawing. The radius is 17 mm with the point shifted by 0.8 mm as the center, and the semicircular portion of the fourth ring engaging groove 20d, the fifth ring engaging groove 20e, and the sixth ring engaging groove 20f is the center. Is a radius of 17 mm with a point shifted by 0.8 mm downward in the figure as the center. Specifically, the ring locking claw 36 has a semicircular portion of the outer circumference formed by the first ring locking claw 36a, the second ring locking claw 36b, and the third ring locking claw 36c at 135 degrees with respect to the vertical line. Has a radius of 18.5 mm centered on a point displaced by 0.5 mm from the center of the line, and the fourth ring locking claw 36d, the fifth ring locking claw 36e, and the sixth ring locking claw 36f. The semi-circular portion of the outer circumference of is a radius of 18.5 mm centered on a point displaced by 0.5 mm from the center on the line of 315 degrees with respect to the vertical line.

As shown in FIGS. 3 and 4, the tightening ring 25 for engaging with the ring engaging groove 20 of the socket holder 16 has a hole for tightening in the center of an octagonal plate and has a radius. It is composed of a series of different fan shapes and is formed in at least two upper and lower stages. That is, the lower tightening holes 26 and 27 are formed in the same semi-circular shape and are shifted by 180 degrees from the lower steps 28 and 29, and are shifted by 105 degrees from the lower steps 28 and 29 and are spaced by 180 degrees. Upper step portions 42 and 43 are provided, and between the upper step portions 42 and 43, upper tightening holes 40 and 41 having a diameter slightly larger than those of the lower tightening holes 26 and 27 are formed in the same semicircular shape. ing. Specifically, the semi-circular portion formed by the lower tightening hole 26 is a semi-circle having a radius of 17 mm of 0 to 180 degrees centered on a point displaced by 0.8 mm from the center upward in the figure. Specifically, the semi-circular portion formed by the lower tightening hole 27 has a radius of 17 mm from 180 degrees to 360 degrees centered on a point displaced by 0.8 mm from the center downward in the drawing. The semicircular portion of the outer periphery of the upper tightening hole 40 has a radius of 18.5 mm from 105 degrees to 285 degrees around a point shifted by 0.5 mm from the center on the line of 135 degrees with respect to the vertical line. The semicircular portion of the outer periphery of the upper tightening hole 41 has a radius of 18.5 mm from 285 degrees to 105 degrees centered on a point displaced by 0.5 mm from the center on the line of 315 degrees with respect to the vertical line. .

In the structure described above, the tightening ring 25 is fitted into the ring engaging groove 20 of the socket holder body 16, and the tightening ring 25 is rotated so that the inner diameter of the socket holder body 16 is at the maximum position. That is, as shown in FIG. 1, the position where the slot 24 of the socket holder body 16 substantially coincides with the step portion 28 of the tightening ring 25 is the position where the inner diameter of the socket holder 16 is the maximum. At this time, as shown by the dotted line in FIG. 8, the ring engaging claws 36f, 36a, 36b are in the upper tightening hole 41, the ring engaging grooves 20a, 20b are in the tightening hole 27, and the ring engaging claws 36c, 36d and 36e are in contact with the upper tightening hole 40, and ring engaging grooves 20d and 20e are in contact with the tightening hole 26, respectively. In this way, with the socket holder body 16 having the maximum diameter, the flange locking claw 22 of the large diameter portion 31 is locked to the lower surface of the annular flange portion 14 of the CRT socket 10. Then, the CRT electrode tube portion 15 is inserted into the socket holder body 16, and the low voltage contact and the high voltage contact are inserted into the annular portion 13 of the socket housing 11.

After inserting the contacts, the tightening ring 25 is rotated in the direction of the arrow in FIG. Then, the diameter of the socket holder body 16 gradually becomes smaller. That is, when the tightening ring 25 is rotated by 100 to 110 degrees as shown in FIG. 2, the tightening ring 25 moves as shown by the solid line in FIG. 8 to move the ring engaging claw 36b, the ring engaging groove 20c, and the ring. The locking claws 36d and 36e and the ring engagement groove 20f approach the center. Therefore, the non-slip unevenness 21 is fixed in close contact with the CRT electrode tube portion 15. Thus, while the tightening ring 25 is rotating, the inner wall of the tightening hole of the tightening ring 25 and the outer wall of the socket holder body 16 are in contact with each other at least at 4 to 5 points or more, and remain substantially circular in shape. Becomes smaller and tightens to fix.

[0015]

[Effect of device]

 Since the present invention is configured as described above, during rotation for tightening the tightening ring, the inner wall of the tightening hole of the tightening ring and the outer wall of the socket holder body come into contact with each other at least 4 to 5 or more places. The overall diameter remains small and the diameter becomes smaller. Therefore, the CRT socket and the CRT electrode tube portion are securely held by the socket holder body and the tightening ring. Further, since at least four step portions are formed on the inner wall of the tightening hole, the tightening ring is hardly rotated in the reverse direction, so that it can be securely held for a long period of time.

[Brief description of drawings]

FIG. 1 shows an embodiment of a CRT socket holder according to the present invention, which is a cross-sectional view of a tightening ring before tightening.

FIG. 2 is a cross-sectional view after tightening the tightening ring in FIG.

FIG. 3 is a plan view of the tightening ring of the present invention.

4 is a cross-sectional view of FIG.

FIG. 5 is a perspective view of the socket holder of the present invention.

FIG. 6 is a plan view of FIG.

FIG. 7 is a vertical cross-sectional view after tightening the tightening ring.

FIG. 8 is a development view of the tightening ring before and after tightening.

FIG. 9 is a cross-sectional view of a conventional CRT and socket holding device.

FIG. 10 is a perspective view of a conventional socket holder.

FIG. 11 is a cross-sectional view of a conventional tightening ring before tightening.

FIG. 12 is a cross-sectional view of a conventional tightening ring after tightening.

[Explanation of symbols]

10 ... CRT socket, 11 ... Socket housing, 1
2 ... Projection part, 13 ... Annular part, 14 ... Annular collar part, 15 ... C
RT electrode tube portion, 16 ... Socket holder body, 17 ... Hinge portion, 18 ... Semi-circular holder, 20 ... Ring engaging groove,
20a ... 1st ring engaging groove, 20b ... 2nd ring engaging groove, 20c ... 3rd ring engaging groove, 20d ... 4th ring engaging groove, 20e ... 5th ring engaging groove, 20f ... 6th ring Engagement groove, 21 ... Anti-slip unevenness, 22 ... Tsuba locking claw, 23 ...
Terminal part, 24 ... Slotting, 25 ... Tightening ring, 26
... Lower tightening hole, 27 ... Lower tightening hole, 28 ... Lower step portion, 29 ... Lower step portion, 30 ... Small diameter portion, 31 ... Large diameter portion,
32 ... Vertical concave portion, 33 ... Vertical convex portion, 34 ... Upper end of convex portion, 35 ...
Lower end of recess, 36 ... Ring locking claw, 36a ... First ring locking claw, 36b ... Second ring locking claw, 36c ... Third ring locking claw, 36d ... Fourth ring locking claw, 36e ... Fifth Ring locking claw, 36f ... Sixth ring locking claw, 40 ... Upper tightening hole, 41 ... Upper tightening hole, 42 ... Upper step, 43
… Upper step.

Claims (2)

[Scope of utility model registration request] 1. A contact of a CRT electrode tube portion is inserted into an annular portion of a CRT socket, and a tubular socket holder body having a slit is covered between the annular portion and the CRT electrode tube portion. In a configuration in which a tightening ring is fitted and held in a ring engaging groove on the outer periphery of the tightening ring, the tightening ring has at least two upper and lower stages of the tightening ring, and each of the fan-shaped holes has different center points. The ring engaging groove of the socket holder body is integrally formed with a ring locking claw that engages with the upper tightening hole at the upper stage of the ring engaging groove. CRT socket holder. 2. The CRT according to claim 1, wherein the tightening holes formed of fan-shaped holes having different center points are semi-circular, and adjacent tightening holes are continuous with a step. Socket holder.