JPS58133742A - Production process for cathode-ray tube - Google Patents

Abstract

PURPOSE:To obtain a cathode-ray tube in which the tube axis and the gun axis can be aligned with each other by sealing hermetically a stem and the vicinity of a neck end opening part to each other while exerting on a stem exhaust pipe a push pressure of inverse vector which negates the horizontal component of the spring force which elastically makes contact with the funnel of a funnel getter. CONSTITUTION:In consideration of the inclination of the top of an electron gun 4 caused by the horizontal component F1 of spring foce F0 acting on the funnel of a funnel getter support 5, a stem 3 and the vicinity of the neck end opening part 81 are hermetically sealed to each other using a gas burner or the like, while exerting the push pressure FS of inverse vector which negates F1 in relaton to the center of the stem, on a stem exhaust pipe 1 inserted in a holder 9 through the holder 9 itself used for the process by which an electron gun is ordinarily inserted and sealed inside a neck 8. Consequently, mounting of a deflecting yoke can be also carried out very easily by simplifying the adjusting mechanism of purity and convergence.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to l! li! The present invention relates to a method of manufacturing tubes, and in particular to a method of sealing the neck and stem of a cathode ray tube having a funnel getter with a collar receiver.

[Technical background of the invention and its problems]

In recent years, the convergence and utility adjustment mechanisms of color picture tubes have been simplified (in recent years), the deflection yoke for color picture tubes can only be adjusted by attaching the deflection yoke to the outer wall from the neck to the funnel. So, comparator (/
We have achieved something that satisfies both performance and utility.

In order to simplify the various mechanisms of the color picture tube, the electron beam emitted from the electron gun should travel exactly along the tube axis of the color picture tube when not deflected, and strike the center of the tube. It is necessary that the

On the other hand, getters for cathode tubes such as general color picture tubes are easy to install, secure the amount of getter material filling and getter, and have a high withstand voltage due to backflash. The so-called funnel getter is heated by a high-frequency coil after the color picture tube is evacuated, and the getter is applied to a large space inside the funnel, and the color image is received. It is designed to create a high vacuum inside the tube.

Next, the main parts of a cathode ray tube having a funnel getter before being sealed will be explained with reference to FIG.

That is, it has a stem AIIP trachea (1) and a stem bin (2).
A nine stem (3) is implanted, and an electron gun (4) is assembled on this stem (3), and this electron gun (4) is disposed from the top of the funnel via a funnel getter support (5). An electron gun assembly including a nine-funnel getter (6) is inserted into an open neck end portion (81) of an envelope consisting of nine funnels (7) and a neck (8) sealed to a panel (not shown), and the stem (3) and neck end open IIs (8t
) When sealing the vicinity with a gas burner, etc., the funnel getter support (5) is used to prevent f! In order to prevent vibration noise from occurring due to vibration, a spring is installed along the inner surface of the funnel (7) to prevent the electron beam that is deflected toward the panel from hitting the funnel getter nabot (51) of the funnel getter (6). It is designed to make elastic contact with force (F・).

In this case, as mentioned above, the ninth part of the reduction of the 11 mechanisms of the color picture tube is the tube axis (6) of the collar picture tube, that is, the neck (8).
There is a fee to match the axis of the electron gun (4) and the trajectory of the electron beam and the center position of the deflection yoke. However, 7 funnels (1) of funnel getta boat (5)
The horizontal component of this (V,) is the rounding of the spring force (r・), and the horizontal component of this (V,) is F fist cos#=F1. (6
), it becomes . In this state, the stem (3) and the vicinity of the open neck end are sealed.

As a result, the gun axis of the electron gun (4) and the tube axis (6) no longer match, and the roaring electron beam deviates from the tube axis (6) and is directed toward the panel, deteriorating the accuracy of the center position of the electron beam spot. Despite the simplification of the adjustment mechanism for utility, convergence, etc., there are problems that can cause extremely inconvenient results.

[Object of the Invention] The present invention has been developed in view of the above-mentioned problems, and it is an object of the present invention to provide a spring to the funnel of a funnel getter support of a cathode ray tube which is disposed from an electron gun via a funnel getter support and is equipped with a funnel getter. The present invention provides a method for manufacturing a cathode ray tube in which the electron gun assembly is placed in the neck, taking force into consideration, and the stem and the vicinity of the neck opening are sealed, thereby making it possible to align the tube axis and the gun axis. The purpose is

[Summary of the invention]

That is, the present invention has a stem exhaust pipe, and the 4I of the stem bin
An electron gun assembly comprising a nine stem, a companion electron gun assembled on the stem, and a companion funnel getter disposed from the top of the electron gun via a funnel getter support is attached to the cathode-tube envelope. Insert the paper into the open neck end of the
In the manufacturing method of the Friendly Cathode Wrap Tube, the spring force that makes elastic contact with the funnel of the funnel getter is applied to the stem exhaust pipe inserted into the holder of the electron gun assembly. The % value indicates that sealing is achieved while applying a pressing force of an inverse vector that cancels out the horizontal component force.

[Embodiments of the invention]

Next, an embodiment of the method for manufacturing a cathode ray tube according to the present invention will be described with reference to FIG. In the drawing, the same reference numerals as in FIG. 1 indicate the same parts.

That is, it has a stem exhaust pipe (1), a good stem (3) in which a stem bin (2) is installed, a nine electron gun (4) assembled on this stem (3), and an electron gun (4) of this electron gun (4). An electron gun assembly comprising a funnel getter (6) disposed from the top through a funnel getter support (5) and a funnel (7) and a neck (
When inserting the envelope from the open neck end part (81) of the envelope consisting of 8) and sealing the stem (3) and the vicinity of the open neck end 11 (8t) using a gas burner, etc., the funnel getter support (5) In order to prevent noise from being generated by vibrations from the outside, the electron beam that is deflected toward the panel is funneled to the funnel getter.
In order to prevent K from colliding with each other, spring force (1.) is applied along 7A and channel 11 of channel (7) to make them come into strong elastic contact. Therefore, due to the horizontal component of the spring force (F・), that is, the spring force (FM) of F@cos-, the vicinity of the top of the electron gun (4) can be tilted from the tube axis (6) by (Fl). However, in this embodiment, considering the inclination of the top of the electron gun (4) due to the horizontal component force (P, )K of the spring force (F・) on the funnel of the funnel getter support (5), the normal electron gun assembly is Matchmaker sealing process Kl for solid body inside neck (8)! A pressing force (r,) of an opposite vector that cancels (Fs)' is applied to the stem exhaust pipe (1) inserted into the holder (9) through the holder (9) to be used, centering on the stem. However, the step (3) and the vicinity of the open neck end portion (81) are sealed with a gas burner or the like.

That is, the horizontal component of the spring force (F・) that makes elastic contact with the 7th funnel of the funnel getter support (5) is (Fl), and the distance in the tube axis direction from this point of elastic contact to the stem (3) is (Ll).
If the distance from the stem (3) to the position where the pushing force (F,) of the inverse vector that cancels (Fl) is applied is (L,), then Ll ・ Pi + L, ・ F, K (PI ) and then sealing the electron gun (4) gun shaft and tube shaft (■) to the electron gun assembly by K. It is possible to do so.

Therefore, as mentioned above, the utility. The comparance adjustment mechanism is simplified and the deflection adjustment can be installed extremely easily.

In the above embodiment, the pulp spanner was omitted from the explanation.
If there is a pulp spanner, take into account the spring force caused by the elastic contact between this pulp spanner and the inner wall of the neck (8).
Of course, it is necessary to determine F,).

〔Effect of the invention〕

As described above, according to the method for manufacturing a closed tube of the present invention, the inclination of the gun axis of the electron gun with respect to the tube axis due to the spring force that comes into elastic contact with the seven funnels of the funnel getter support is preliminarily applied to the stem exhaust pipe by applying a reverse vector to the tube axis. The tube shaft and gun shaft are sealed by applying pressure, which creates a very special stormy filtration
Since a II tube can be obtained, its industrial value is extremely large.

[Brief explanation of drawings]

Fig. 1 is an explanatory cutaway elevational view of essential parts showing the state in which the gun axis is tilted with respect to the tube axis due to the spring force that makes elastic contact with the funnel of the funnel getter support, and Fig. 2 is an embodiment of the cathode ray tube manufacturing method of the present invention. FIG. 3 is a cutaway elevational view of the cost part showing an example. 1... Stem exhaust pipe 3... Stem 4... Electron gun 5... Funnel getter support 6... Funnel getter 7... Funnel 8...
・Neck 9... Holder agent Patent attorney Inoue - Male Figure 1

Claims (1)

[Claims] a stem having a stem exhaust pipe and a stem bin implanted therein;
An electron gun assembly comprising an electron gun assembled on the stem and a funnel getter disposed from the top of the electron gun via a funnel gelatin boat is inserted from the open end of the neck of the cathode ray tube envelope. Insert Iwr1 stem and I!
It is made to seal the vicinity of the open part of the neck.
- In the method for manufacturing a cathode ray tube, while applying a pressing force of an opposite vector to the stem exhaust pipe inserted in the holding circle of the electron gun assembly to cancel the vector of the spring force elastically contacting the funnel of the funnel getter boat. A method of manufacturing a cathode tube in which mold is removed during sealing.