JPS62271331A - Electron gun supporting assembly of cathode ray tube - Google Patents

Abstract

PURPOSE:To make possible to ensure an enough strength to support an electrode even with a shallow burying depth, by forming the burying part of the electrode supporting part in a U-shape. CONSTITUTION:An electrode supporting part 20 is formed in a U-shape and the supporting part 20 is buried in softened bead glass 21. The bead glass 21 is moved horizontally as shown by an arrow G when the electrode supporting part is buried and so it is buried with no stress from any direction, A, B, C and D. Since the electrode supporting part 20 is U-shaped, its contact area with the bead glass 21 is increased and burying part of the electrode supporting part 20 is evenly held by the bead glass 21 from the four directions, A, B, C and D. Thus, the burying depth can be grestly decreased.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention [Field of Industrial Application] The present invention relates to an electron gun support structure 1 for a cathode ray tube, and particularly to the structure of an electrode support portion of an electrode component embedded in bead glass.

[Conventional technology]

A conventional electron gun support structure for a cathode ray tube has a structure as shown in FIG. 1.2.3.4.5 are first, second, third, fourth, and fifth electrodes, 6 is a cathode holder, and these electrode parts include electrode supports 11.12.13.14. 15.1
6 is attached by welding or the like. Fourth electrode 4
In this case, the end itself is the support part 14.

Support parts 11 to 16 of each of the electrode parts 1 to 6 and heater 7
The support part 17 is attached to an assembly jig (not shown), and the plurality of bead glasses 81, which have been softened by heating, are attached to the first electrode support part while maintaining their relative positions correctly.
It is inserted by pushing it in as shown by the dotted line in the figure. After the bead glass 8 is cooled and solidified, it is removed from the assembly jig. (Refer to Japanese Unexamined Patent Publication No. 54-559) [Problem to be solved by the invention] In the above conventional example, the electrode holding strength is insufficient unless the electrode supporting portion is deeply embedded in the bead glass (50% or more of the glass plate thickness). There is a problem in that if it is not sufficiently secured and buried too deeply, glass cracks will occur.

An object of the present invention is to provide an electron gun support structure for a cathode ray tube that can ensure sufficient electrode holding strength even at a shallow embedment depth.

[Means for solving problems]

The above object is solved by forming the embedded part of the electrical support part into a U-shape.

[Effect]

By forming the electrode support part in a U-shape, the contact area with the bead glass increases, and the area around the electrode support part is held evenly from the four directions (top, bottom, left and right).
Holding strength can be ensured even at an embedding depth of 50 inches or less of the bead glass plate thickness.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. The electrode support part 20 is formed in a U-shape, and the bead glass 21 is softened to embed the electrode support part 20 therein. At the time of this embedding, the bead glass 21 is moved in the direction shown by arrow G (by moving the bead glass 21 horizontally and embedding it, A, B
, C, and D directions.

In this way, since the electrode support part 20 is U-shaped,
The contact area with bead glass 21 increases.

In addition, the embedded portions of the electrode support portion 20 are A, B, (
:', the bead glass 211 is held evenly from the four directions of D. From these reasons, the embedding depth can be made very shallow, and the thickness of the bead glass 21 can be reduced to 3.
．． For items over 8m, the holding strength can be ensured even if the embedding depth is less than 50 widths of the plate thickness of the bead glass 21.
Bead glass cracks are prevented. In particular, the present invention is highly effective when embedding cantilevered electrode parts.

〔Effect of the invention〕

According to the present invention, the contact area between the electrode support part and the bead glass is increased, and the periphery of the electrode support part is evenly held by the bead glass. Secured.

[Brief explanation of drawings]

FIG. 1 is a front view of essential parts showing an embodiment of the present invention, FIG. 2 is a sectional view of FIG. 1, and FIG. 3 is an overall view of a conventional example. 20... Electrode support part, 21... Bead glass.

Claims (1)

[Claims] 1. In an electron gun support structure for a cathode ray tube in which the electrode support part of the electrode part is embedded in bead glass and the electrode parts are supported insulated from each other, the embedded part of the electrode support part is formed in a U-shape. An electron gun support structure for a cathode ray tube.