JP2596203Y2 - CRT and socket holding device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for holding a CRT and a socket, in which a contact of a CRT electrode tube portion is mounted on a socket housing, a socket holder is put between the contacts, and the socket is fastened and held by a tightening ring. It is.

[0002]

2. Description of the Related Art A plurality of contact pins are provided on a CRT used in a television receiver, a computer display, etc., of which a low voltage contact pin is connected to a printed circuit board and a high voltage contact pin is derived from a flyback transformer. The connected lead wire is used, and a CRT socket is used at this time.

This will be described in more detail with reference to FIGS. Reference numeral 15 denotes a CRT electrode tube, and 10 denotes a CRT socket. Socket housing 1 of the CRT socket 10
1 comprises 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 on 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 CRT electrode tube portion 15 is covered with a socket holder 16 and fastened with a fastening ring 25.
More specifically, the socket holder 16 is shown in FIG.
As shown in the figure, the semi-circular holders 18 and 19 are connected by a thin integral hinge portion 17, and this is connected to a CRT.
It covers the base of the electrode tube part 15 and the annular flange part 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 anti-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 outside the semicircular holders 18 and 19 is rotated by 90 degrees or more. Since the tightening ring 25 is formed such that the tightening holes 26 and 27 are offset from the center by the step portions 28 and 29 at intervals of 180 degrees, when turning in the direction of the arrow from the state of FIG. 11, as shown in FIG. The semicircular holders 18 and 19 are tightened by the tightening holes 26 and 27, the slit 24 gradually narrows, and the non-slip
CRT socket 10 and CRT in close contact with T electrode tube 15
The electrode tube 15 is fixed.

[0005]

In the conventional socket holder 16 as described above, when injection molding is performed, the semicircular holders 18 and 19 are in an open state .
Area of the eye increases, the utilization efficiency of the mold is lowered, and, since the these semicircular holder 18 and 19 are connected by a thin hinge portion 17 of the wall thickness, the hinge portion 17
There is a problem that it is difficult for resin to flow into the mold, and the yield of molding is poor. Therefore, not only the workability is poor, but also the cost is high.

SUMMARY OF THE INVENTION It is a first object of the present invention to obtain a CRT socket having an excellent molding yield with a mold.
At that time, the number of dies increases to 3 or more, and injection molding
The second step is to obtain something that does not complicate the process.
It is the purpose .

[0007]

According to the present invention, a contact of a CRT electrode tube portion is attached to an annular portion of a socket housing, a socket holder is put between the annular portion and the CRT electrode tube portion, and tightened with a tightening ring. In the holding device, the socket holder has a vertically opened tubular shape, and has a slit in a longitudinal direction. The tubular socket holder body has a small-diameter portion for surrounding the CRT electrode tube portion with an inner wall. Vertical recesses that penetrate vertically
On the large diameter portion for enclosing the annular portion by the inner wall
Vertical convex portions penetrating below are formed alternately, and the
The ring locking claw projecting outward at the top, forming a flange engaging nail that protrudes inwardly at the bottom <br/> of vertical convex portion, the ring locking pawl
And the upper end of the vertical protrusion form a ring engagement groove to engage the ring.
To stop between the flange locking claw and the lower end of the vertical recess.
C characterized by locking a tubular flange of a housing
RT and socket holding device.

[0008]

The fastening ring is fitted into the ring engaging groove of the socket holder, and the fastening ring is rotated so that the inner diameter of the socket holder is at the maximum position. In this state, the large-diameter flange locking claw is locked to the lower surface of the annular flange of the CRT socket. Next, the CRT electrode tube is inserted into the socket holder, and the contact is inserted into the annular portion of the socket housing. After inserting the contacts, rotate the clamping ring. Then, the diameter of the socket holder gradually decreases, and the anti-slip irregularities are fixed in close contact with the CRT electrode tube. This socket holder body is
When projected from above or below along the axial direction, the ring
Projecting parts such as locking claws and collar locking claws are projected overlapping
No parts and therefore molds for injection molding
Molds the outside of the cylinder that constitutes the socket holder body
Mold from the bottom to perform and the top to mold the inside
It is molded with two molds, a mold from the side.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. 11 is a socket housing made of PTB resin or the like, 15 is a CRT electrode tube, and 16 is a socket holder. The socket housing 11 includes:
An annular portion 13 having a through hole in the center thereof and a laterally projecting portion 12 are integrally formed. The low pressure contact and the high pressure contact are arranged concentrically on the annular portion 13. Terminal part 2 of these contacts
3 is bent and protrudes from the annular flange portion 14 below the annular portion 13 and inserted into a printed wiring board (not shown) or the like to be connected by soldering.

As shown in FIGS. 1 and 2, the socket holder 16 is a tubular member which is opened and closed vertically, has a slot 24 for tightening and escaping in the vertical direction, and has a vertical recess 32,
The vertical projections 33 are alternately formed by six pieces to form a small-diameter portion 30 for surrounding the CRT electrode tube portion 15 by continuation of the inner walls of the plurality of vertical depressions 32. A large-diameter portion 31 for surrounding the annular flange portion 14 of the annular portion 13 in a continuous inner wall. At the upper end of the vertical recess 32,
An outwardly protruding ring locking claw 36 is provided, and an inwardly protruding anti-slip irregularity 21 is provided. The ring engaging claw 36 and the upper end 34 of the vertical protrusion 33
And the ring engagement groove 20 is formed between them. A flange locking claw 22 is formed at the lower end of the vertical convex portion 33 so as to protrude inward, and the annular collar portion 14 is sandwiched between the flange locking claw 22 and the lower end 35 of the concave portion of the small diameter portion 30. It is. The ring locking pawls 36 are provided at six locations around the first ring locking pawls 3.
6a, second ring locking claw 36b, third ring locking claw 36
c, fourth ring locking claw 36d, fifth ring locking claw 36
e, a sixth ring locking claw 36f is formed. Similarly, the ring engaging groove 20 is also provided with the ring engaging claws 36a, 36
b, 36c, 36d, 36e, and 36f, the first ring engaging groove 20a and the second ring engaging groove
0b, third ring engaging groove 20c, fourth ring engaging groove 20
d, fifth ring engaging groove 20e, sixth ring engaging groove 20f
Are formed.

As shown in FIGS. 3 and 4, a tightening ring 25 for engaging the ring engaging groove 20 of the socket holder 16 has a tightening hole at the center of an octagonal plate, and two upper and lower holes. It is formed. That is,
Lower fastening holes 26 and 27 are formed in the same semicircular shape and are shifted by 180 degrees between lower step portions 28 and 29, and
It is shifted by 105 degrees from the lower step portions 28 and 29 to 18
The upper steps 42 and 43 are provided at intervals of 0 degrees,
The lower tightening hole 2 is provided between the upper step portions 42 and 43.
Upper clamping holes 40 and 41 slightly larger in diameter than 6 and 27
Are formed in the same semicircular shape.

In the above-described configuration, a fastening ring 25 is fitted into the ring engaging groove 20 of the socket holder 16 and the fastening ring 25 is attached to the socket holder 1.
6 is rotated so that the inner diameter becomes the maximum position. That is, as shown in FIG. 6, the position where the slot 24 of the socket holder 16 substantially matches the step 28 of the fastening 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 locking 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 locking claws 36c, 36d, 36e. Is in the upper fastening hole 40,
The ring engagement grooves 20d and 20e are in contact with the fastening holes 26, respectively. In this way, with the socket holder 16 having the maximum diameter, the flange locking claw 22 of the large diameter portion 31 is locked on the lower surface of the annular flange 14 of the CRT socket 10. Next, the CRT electrode tube 15 is inserted into the socket holder 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 16 gradually decreases. That is, as shown in FIG. 7, when the fastening ring 25 is rotated by 100 to 110 degrees, the fastening ring 25 moves as shown by the solid line in FIG. 8, and the ring engaging claw 36b, the ring engaging groove 20c, the ring engaging The claws 36d and 36e and the ring engaging groove 20f approach the center. Therefore, the anti-slip irregularities 21 are fixed in close contact with the CRT electrode tube portion 15.

[0014]

According to the present invention, as described above, a CRT electrode tube is mounted on a socket housing, a socket holder is put between them, and the socket holder is fastened and held by a tightening ring. A tubular recess which is vertically open and has a slit in the longitudinal direction, and the tubular socket holder body has a vertical recess serving as a small diameter portion for surrounding the CRT electrode tube portion by an inner wall, and the annular portion is surrounded by an inner wall. Because the vertical convex portion which becomes a large diameter portion is formed alternately, the outward ring locking claw is formed in the vertical concave portion, and the flange locking claw is formed inward in the vertical convex portion. Compared to the case of opening in a semicircle and performing injection molding,
The area for molding is small, and the use efficiency of the mold is high.
And there is no thin part like the hinge part.
Since there is no part where the oil does not easily flow in, the molding yield is excellent with the mold. In addition, the socket holder body remains tubular, and it has slits, vertical concave parts, vertical convex parts, and outward ring locking claws. , With the inward flange locking claw,
Molding can be performed only by using a mold that has been broken into pieces. Therefore, a mold having excellent molding workability and excellent quality can be provided at low cost.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a device for holding a CRT and a socket according to the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a plan view of a fastening ring.

FIG. 4 is a sectional view of FIG. 3;

FIG. 5 is a cross-sectional view of the device for holding a CRT and a socket according to the present invention.

FIG. 6 is a cross-sectional view of the tightening ring before tightening.

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

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

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: Projecting portion, 13: Annular portion, 14: Annular flange portion, 15: C
RT electrode tube part, 16: socket holder, 17: hinge part, 18: semicircular holder, 20: ring engaging groove, 20
a: first ring engaging groove, 20b: second ring engaging groove, 2
0c: third ring engaging groove, 20d: fourth ring engaging groove,
20e: Fifth ring engagement groove, 20f: Sixth ring engagement groove, 21: Non-slip unevenness, 22: Flange locking claw, 23: Terminal part, 24: Slot, 25: Fastening ring, 26: Lower fastening Hole, 27: Lower fastening hole, 28: Lower step, 29: Lower step, 30: Small diameter part, 31: Large diameter part, 3
2 ... vertical concave part, 33 ... vertical convex part, 34 ... upper part of convex part, 35 ... lower part of concave part, 36 ... ring engaging claw, 36a ... first ring engaging claw, 36b ... second ring engaging claw, 36c ... 3 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.

Continuation of the front page (56) References JP-A-60-243987 (JP, A) JP-A-2-82477 (JP, A) JP-A-3-43287 (JP, U) JP-A 62-70384 (JP) , U) Japanese Utility Model Showa 55-38432 (JP, U) Japanese Utility Model 2-21986 (JP, U) Japanese Utility Model 2-38786 (JP, U) Japanese Utility Model Utility Model 3-94756 (JP, U) (58) Surveyed field (Int.Cl. ⁶ , DB name) H01J 29/70-29/82 H01R 31/00-33/975

Claims (1)

(57) [Scope of request for utility model registration] A CRT is provided on an annular portion of a socket housing.
Attach the contacts of the electrode tube,
A socket holder is placed between the T-electrode tube portion and the socket holder is fastened and held by a fastening ring. A vertical concave part vertically penetrating the inner wall to surround the CRT electrode tube part and a vertical convex part penetrating vertically as a large diameter part to surround the annular part by the inner wall. are alternately formed, phosphorus <br/> grayed locking claw projecting outward at the top of the vertical recess, to form a flange engaging nail that protrudes inwardly at the bottom of the vertical convex portion, the ring Ring with locking claw and upper end of vertical protrusion
An engagement groove is formed to lock the ring, and the flange locking claw and the vertical concave
Lock the tubular flange of the socket housing with the lower end of the part
Holding device CRT and the socket, characterized in that to become to.