JPH0711398Y2 - CRT socket holder - Google Patents

Description

[Detailed description of the device]

[0001]

[Industrial application] The present invention is applicable to a CRT socket, a C
The present invention relates to a CRT socket holder in which an RT electrode tube portion is inserted, a socket holder body is covered between them, and a tightening ring is used for tightening and holding.

[0002]

2. Description of the Related Art CRTs used in television receivers, computer displays, etc. are provided with a plurality of contact pins, of which low voltage contact pins are connected to a printed circuit board and high voltage contact pins are led out from a flyback transformer. The CRT socket is used at this time.

This will be described in more detail with reference to FIGS. 9 to 12. Reference numeral 15 is a CRT electrode tube portion, and 10 is a CRT socket. Socket housing 1 for the CRT socket 10
Reference numeral 1 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 covered and fixed by the tightening ring 25. More specifically, the socket holder body 16
As shown in FIG. 10, the semi-circular holders 18, 19 are connected by a thin integral hinge portion 17, which is connected to the base portion of the CRT electrode tube portion 15 and the annular collar portion 14 of the socket housing 11. Cover. Then, the flange locking claw 22 at the lower end is locked to the annular flange portion 14, and the semicircular holder 1
CRT electrode tube portion 1 has non-slip unevenness 21 inside 8 and 19.
Touch 5. Then, the tightening ring 25 fitted in the ring engaging groove 20 on the outer side of the semicircular holders 18 and 19 is
Rotate 0 degrees or more. Specifically, as shown in FIG. 11, the tightening ring 25 has a radius of 17 m centered at a point where the tightening holes 26 and 27 are displaced from each other by 0.8 mm.
Therefore, the steps 28 and 29 are formed at intervals of 180 degrees. When rotating from the state of FIG. 11 in the direction of the arrow, the semicircular holder 1 as shown in FIG.
8 and 19 are tightened by tightening holes 26 and 27, and the slot 24 is gradually narrowed to prevent slippage unevenness 21.
Adheres to the CRT electrode tube portion 15 and the CRT socket 10 and the CRT electrode tube portion 15 are fixed.

[0005]

The fastening ring 25 of the conventional socket holder as described above has the fastening hole 2
Since 6 and 27 are formed with a radius of 17 mm centered on a point shifted by 0.8 mm from the center, the line connecting the step portions 28 and 29 with an interval of 180 degrees has the shortest diameter. Therefore, when rotating as shown in FIG.
One semi-circular holder 18 is pushed inward inside 9 so that 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 configuration, the semicircular holder 1
Since 8 and 19 are pushed in only at two points of the step portions 28 and 29, the socket holder body 16 and the CRT electrode tube portion 1
5 is incompletely adhered and the step 2 prevents reverse rotation.
Since 8 and 29 are formed with an interval of 180 degrees, there is a problem that they may be loosened by vibration or the like.

The present invention has a socket holder body and a CRT.
The purpose of the present invention is to obtain a material for fixing the electrode tube portion firmly and securely.

[0007]

DISCLOSURE OF THE INVENTION The present invention has a tubular socket holder in which contacts of a CRT electrode tube portion are inserted in an annular portion of a CRT socket and a slot is provided between the annular portion and the CRT electrode tube portion. In the case where the main body is covered and the tightening ring is fitted and held in the ring engaging groove on the outer periphery of the socket holder main body,
The tightening ring has at least two upper and lower stages of tightening holes, and is composed of a series of fan-shaped holes having different center points, and the ring engaging groove of the socket holder main body is formed by the ring engaging groove. The CRT socket holder is characterized in that a ring engaging claw that engages with the upper tightening hole is integrally formed in the upper stage.

[0008]

[Function] The tightening ring is fitted into the ring engaging groove of the socket holder body, and the tightening ring is rotated 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 it into the annular part of the socket housing body.
Insert the contact. 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 at 4 to 5 or more places and remain substantially circular as a whole, and the diameter of the socket holder body gradually decreases. The non-slip unevenness is closely fixed to the CRT electrode tube portion.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 10 is a CR made of PTB resin, etc.
T socket, 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 sideward 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 and 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 FIGS. 5 and 6, the socket holder body 16 has a tubular shape that opens vertically and has a vertical slit 32 for tightening and escaping.
And six vertical protrusions 33 are alternately formed, and the CRT electrode tube portion 15 is formed by the continuous inner walls of the plurality of vertical recesses 32.
And a large diameter portion 31 for surrounding the annular brim portion 14 of the annular portion 13 in a continuous manner of the inner wall of the vertical convex portion 33. At the upper end of the vertical recess 32, a ring locking claw 36 protruding outward is provided, and an anti-slip concavo-convex 21 protruding inward is provided. The ring engaging pawl 36 and the upper end 34 of the convex portion of the vertical convex portion 33.
A ring engagement groove 20 is formed between the and. A flange locking claw 22 is formed at the lower end of the vertical convex portion 33 so as to project inward, and the annular flange 14 is sandwiched by the flange locking claw 22 and the lower end 35 of the recess of the small diameter portion 30. Be done. The ring locking claws 36 are provided at six locations around the entire circumference of the first ring locking claw 3
6a, second ring locking claw 36b, third ring locking claw 36
c, fourth ring locking claw 36d, fifth ring locking claw 36
e, the sixth ring locking claw 36f is formed such that the outer circumference thereof is generally circular. Similarly, the ring engaging groove 20 also has the ring engaging claws 36a, 36b, 36.
a little inside each of c, 36d, 36e, 36f,
First ring engaging groove 20a, second ring engaging groove 20b, third ring engaging groove 20c, fourth ring engaging groove 20d, fifth
The ring engagement groove 20e and the sixth ring engagement groove 20f are formed so that their outer circumferences are substantially circular as a whole.

The ring engaging groove 20 is specifically a first ring engaging groove 20a, a second ring engaging groove 20b, and a third ring engaging groove 20b.
The radius of the semi-circular portion formed by the ring engaging groove 20c is 17 m with the center shifted by 0.8 mm from the center upward in the figure.
m, and the semicircular portion formed by the fourth ring engagement groove 20d, the fifth ring engagement groove 20e, and the sixth ring engagement groove 20f is centered at a point displaced by 0.8 mm from the center downward in the drawing. The radius is 17 mm. The ring locking claw 36
Specifically, the 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 is 0 from the center on the line at 135 degrees to the vertical line. ．
It has a radius of 18.5 mm centered on a point displaced by 5 mm, and the semicircular portion of the outer circumference formed by the fourth ring locking claw 36d, the fifth ring locking claw 36e, and the sixth ring locking claw 36f is vertical. 0.5m from the center of the line at 315 degrees to the line
The radius is 18.5 mm centered on the point shifted by m.

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 at the center of an octagonal plate and has different radii. It is a fan-shaped continuous structure, and is formed in at least two upper and lower stages. That is, the lower fastening 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 the lower tightening holes 26 and 2 are provided between the upper step portions 42 and 43.
Upper tightening holes 40 and 41 having a diameter slightly larger than 7 are formed in the same semicircular shape. The lower tightening hole 26
Specifically, the semi-circle part due to is centered on a point displaced by 0.8 mm from the center upward in the figure
It is a semicircle with a radius of 0 mm and a radius of 17 mm. Further, the semicircular portion formed by the lower tightening hole 27 is, specifically, centered on a point that is shifted 0.8 mm downward from the center in the figure.
The radius is 17 mm from 0 to 360 degrees. The semicircular portion of the outer circumference formed by the upper tightening hole 40 is
A radius of 18.5 mm from 105 degrees to 285 degrees is centered on a point shifted by 0.5 mm from the center on the line of 5 degrees, and the semicircular portion of the outer periphery by the upper tightening hole 41 is perpendicular to the vertical line. 0.5m from the center on the line of 315 degrees
A radius of 18.5 mm from 285 degrees to 105 degrees centered on the point shifted by m.

In the above structure, the tightening ring 25 is fitted in the ring engaging groove 20 of the socket holder body 16.
Is fitted 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 socket holder body 1
A position where the slot 24 of 6 substantially coincides with the step portion 28 of the tightening ring 25 is a position where the inner diameter of the socket holder 16 is maximum. At this time, as shown by the dotted line in FIG. 8, the ring locking claws 36f, 36a, and 36b are attached to the upper tightening hole 41.
The ring engaging grooves 20a and 20b in the tightening holes 27,
The ring engaging claws 36c, 36d, 36e are in the upper tightening hole 40, and the ring engaging grooves 20d, 20e are in the tightening hole 26.
Are in contact with each other. 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 annular portion 1 of the socket housing 11 is inserted.
Insert low-voltage contact and high-voltage contact into 3.

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, as shown by the solid line in FIG.
When the tightening ring 25 moves, the ring locking claw 36b,
The ring engaging groove 20c, the ring engaging claws 36d and 36e, and the ring engaging groove 20f approach the center. Therefore, the non-slip unevenness 21 is fixed in close contact with the CRT electrode tube portion 15. As described above, 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 places or more, and remain substantially circular in diameter, Becomes smaller and tightens and tightens.

[0015]

Since the present invention is constructed as described above,
During the 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 and remain generally circular in shape, and the diameter thereof becomes small. Tighten and fix. 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 reverse rotation of the tightening ring is almost eliminated, and reliable fixing and holding is performed 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.