JPH1032067A - Socket for cathode ray tube - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent creeping discharge by connecting and disconnecting a lead with/from a terminal in good condition. SOLUTION: A terminal 13 for lead connection is formed as a flat spring protruding resiliently toward a lead, and a lead wire removing chip 40 for pressing the terminal 13 to cause retreat to the side opposite to the lead is mounted on a cover 30 in such a way as partially protruded to the outside. The cover 30 is furnished with a creeping discharge preventing rib 39 for prevention of creeping discharge which surround in a wall form a connection checking window 37 opened in a lead guide part 36.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a cathode ray tube (Cath).
The present invention relates to a cathode-ray tube socket that connects an ode Ray Tube to a lead wire and discharges to an earth side when an overvoltage occurs.

[0002]

2. Description of the Related Art As disclosed in Japanese Utility Model Publication No. 2-31992 and Japanese Utility Model Publication No. 2-31993, a conventional cathode ray tube socket has terminals for connecting lead wires in a cover made of synthetic resin. It is housed, and the cover has a lead wire insertion hole and a groove-shaped opening for fitting a holding piece.
Then, when connecting the high-voltage lead wire, insert the high-voltage lead wire into the cover from the lead wire insertion hole, fit the holding piece into the groove-shaped opening, and make it protrude into the cover. Pressing the lead wire connection terminal against the high voltage lead wire, while removing the high voltage lead wire,
The pressing piece is pulled out from the groove-shaped opening, and the lead wire connecting terminal is separated from the high voltage lead wire. The cover is provided with a lead wire guide that surrounds the lead wire insertion hole in a cylindrical shape. The lead wire guide has a connection confirmation window hole, and is used to connect the high voltage lead wire and the lead wire. It has a structure that allows checking the connection status with the terminal.

[0003]

As described above, in the structure in which the pressing piece is fitted into the groove-shaped opening of the cover and the lead wire connecting terminal is pressed by the pressing piece to be connected to the high-voltage lead wire. If the fitting of the piece is incomplete, there is a problem that the high-voltage lead wire comes off, and it is inconvenient when removing the lead wire because it is necessary to prevent the holding piece from being easily pulled out once fitted. There was a problem. Furthermore,
There is a problem that creeping discharge due to high voltage is easily generated through the window for confirming connection of the cover.

The present invention has been made in view of such a conventional problem,
It is an object of the present invention to provide a cathode ray tube socket capable of suitably connecting and disconnecting a lead wire connecting terminal and a lead wire and further preventing creeping discharge.

[0005]

SUMMARY OF THE INVENTION The features of the present invention for solving the conventional problems as described above and achieving the intended purpose are as follows.
A CRT connection contact, a discharge electrode, and a lead wire connection terminal connected thereto are accommodated in a synthetic resin housing and cover, and the housing or the cover is provided with a lead wire insertion hole, In a cathode ray tube socket in which a lead wire can be freely connected to and detached from the lead wire connection terminal through the lead wire insertion hole, the lead wire connection terminal is a leaf spring-like elastically protruding toward the lead wire side. Formed on the housing or the cover, a lead wire withdrawal tip for pressing the lead wire connection terminal and retreating to the opposite side to the lead wire, a part of which protrudes outside the housing or the cover. It has been provided.

The housing or cover has a lead wire guiding portion surrounding the lead wire insertion hole and having a connection confirmation window hole, and a creeping discharge surrounding the connection confirmation window hole at a predetermined interval in a fence shape. It is preferable that a prevention rib is provided.

[0007]

Embodiments of the present invention will now be described with reference to the drawings.

In the figure, reference numeral 10 denotes a conductor for connecting a lead wire to a cathode ray tube, and 17 denotes a conductor which is discharged to the ground side when an overvoltage occurs in the conductor 10. It is formed by bending or the like. 2
Reference numerals 0 and 30 denote housings and covers for accommodating the conductors 10 and 17 in a space formed therein by being fitted together, and reference numeral 40 denotes a lead wire removing tip mounted on the cover 30. These are made of synthetic resin material. Molded by injection molding or the like.

As shown in FIG. 7, a conductor 10, a cathode tube connection contact 11, a discharge electrode 12, and a lead wire connection terminal 13 are integrally formed. The lead wire connection terminal 13 is formed in a plate spring shape obliquely projecting from the upper edge portion of the discharge electrode 12, and connects the concave lead wire contact portion 15 and the L-shaped chip pressed portion 16. Have. As shown in FIG. 4, the conductor 17 has a discharge electrode 18 and a ground connection terminal 19 integrally formed.

The housing 20 and the cover 30 are shown in FIG.
As shown in FIG. 2, it has a box shape in which a space is formed inside by being fitted to each other via a concave engaging portion 21 and a convex engaging portion 31. As shown in FIG. Are provided with conductor holding grooves 32, 33 inside. The conductors 10 and 17 are provided in the space inside the housing 20 and the cover 30.
Are press-fitted into the conductor holding grooves 32 and 33, and the discharge electrode 1 is
2 and 18 are accommodated in a state where they face each other at a predetermined interval. Also, the conductor 10 is provided in the housing 20.
A terminal holding hole 22 that abuts against and holds a lower edge of the terminal 17 and a terminal through hole 2 that protrudes the ground connection terminal 19 of the conductor 17 to the back side.
3 are provided.

As shown in FIGS. 4 and 6, the cover 30 is provided with a lead wire holding portion 34 at a position facing the lead wire connection terminal 13.
Lead wire insertion hole 3 at a position above lead wire contact portion 15
5 are provided therethrough. On the outer surface side of the cover 30, a lead wire guide portion 36 surrounding the lead wire insertion hole 35 in a cylindrical shape is protruded, and a connection confirmation window hole 37 is formed in the lead wire guide portion 36 in a notch shape. Is provided. On the outer surface of the cover 30, as shown in FIG. 3, a creeping discharge prevention rib 39 is formed at a predetermined interval from the connection confirmation window hole 37 so as to surround the connection confirmation window hole 37 like a wall. It is projected.

As shown in FIGS. 5 and 6, the cover 30 is provided with the chip pressed portion 16 of the lead wire connection terminal 13.
A chip mounting hole 45 is provided at a position above the
A chip guide 46 is provided so as to surround the chip mounting hole 45. In the tip mounting hole 45, a rod-shaped lead wire removing tip 40 covers the upper end portion with the cover 30.
It is mounted slidably so as to protrude outside, and the lower end portion comes into contact with the lead wire connection terminal 13. In addition,
The lead wire extracting chip 40 is provided with retaining protrusions 41 and 42.

When connecting a lead wire to the CRT socket configured as described above, as shown in FIG.
When the lead wire 1 is inserted into the lead wire insertion hole 35 of the cover 30, the lead wire 1 is held between the lead wire holding portion 34 by the elasticity of the lead wire connection terminal 13, so that the lead wire is securely connected. be able to. On the other hand, when removing the lead wire, pressing the upper end portion of the lead wire removing chip 40 protruding out of the cover 30, the lead wire connection terminal 1
Since the wire 3 moves backward and separates from the lead wire 1, the lead wire can be easily removed. In addition, the connection state of the lead wire can be easily confirmed through the connection confirmation window hole 37 of the cover 30, and the creeping discharge prevention rib 39 increases the creeping distance, so that the creeping discharge hardly occurs.

[0014]

As described above, in the cathode ray tube socket according to the present invention, the lead wire connecting terminal is formed in the shape of a leaf spring elastically protruding toward the lead wire, so that the lead wire of the housing or the cover is inserted. By simply inserting the lead wire into the hole, the lead wire can be securely connected, and the lead removal terminal presses the lead connection terminal with the lead removal tip and retracts it to the opposite side of the lead wire. The wire can be easily removed.

In addition, by surrounding the connection confirmation window hole formed in the lead wire guide portion by a creepage discharge preventing rib in a fence shape, the creepage distance is increased and creeping discharge due to high voltage is prevented.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a cathode ray tube socket according to the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a plan view of FIG. 1;

FIG. 4 is a sectional view taken along line AA of FIG. 3;

FIG. 5 is a sectional view taken along line BB of FIG. 3;

FIG. 6 is a sectional view taken along line CC of FIG. 3;

FIG. 7 is a front view of the conductor in FIG. 2;

FIG. 8 is a sectional view showing a state where lead wires are connected.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 lead wire 10 conductor 11 cathode ray tube connection contact 12 discharge electrode 13 lead wire connection terminal 15 lead wire contact portion 16 chip pressed portion 17 conductor 18 discharge electrode 19 ground connection terminal 20 housing 21 concave engagement portion 22 Conductor holding part 23 Terminal through hole 30 Cover 31 Convex engaging part 32 Conductor holding groove 33 Conductor holding groove 34 Lead wire holding part 35 Lead wire insertion hole 36 Lead wire guiding part 37 Connection confirmation window hole 39 Surface creeping prevention rib Reference Signs List 40 Tip for removing lead wire 41 Protrusion for retaining 42 Protrusion for retaining 45 Tip mounting hole 46 Tip guide

Claims (2)

[Claims] 1. A cathode tube connection contact, a discharge electrode, and a lead wire connection terminal connected thereto are
The housing or the cover is accommodated in a synthetic resin housing and a cover, and the housing or the cover is provided with a lead wire insertion hole, and a lead wire is connected to and disconnected from the lead wire connection terminal through the lead wire insertion hole. In the flexible cathode ray tube socket, the lead wire connection terminal is formed in a plate spring shape that elastically protrudes toward the lead wire side, and the housing or the cover presses the lead wire connection terminal. A cathode ray tube socket, wherein a lead wire extracting tip for retreating to a side opposite to the lead wire is provided so as to partially protrude outside the housing or the cover. 2. A housing or a cover which surrounds a lead wire insertion hole and has a lead wire guide portion having a connection confirmation window hole, and a creeping discharge which surrounds the connection confirmation window hole in a wall shape at a predetermined interval. The CRT socket according to claim 1, further comprising a prevention rib.