JPH10233250A - Anode cap assembly and its assembling method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance assembling efficiency remarkably, enhance productivity, and realize automatic machining. SOLUTION: A cap assembly is composed of a bowl-like rubber elastic body which is closely fitted to the anode portion outer wall of a cathode-ray tube, a spring for fixing the assembly to the anode portion, and a high voltage wire which couples the same with a flyback transformer. The spring and a high voltage wire conductor are fixed by a conductor lock portion 10 which has an inner diameter smaller than the outer diameter of the high voltage wire or a slit width narrower than the outer diameter of the conductor. After the spring is mounted inside a bowl-like anode cap top 7 portion, a high voltage wire cylindrical hold portion is inserted as passing through as causing a high voltage wire conductor portion to precede, the high voltage wire conductor portion is fitted and fixed to the conductor lock portion 10 of the spring.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anode cap assembly for connecting an anode portion of a cathode ray tube and a flyback transformer with a high-voltage wire, and a method of assembling the same.

[0002]

2. Description of the Related Art In a cathode ray tube (hereinafter simply abbreviated as CRT) used for a color television or a personal computer display, a high-voltage power supply (same as a flyback transformer; hereinafter FBT) for supplying a high voltage to its anode portion.
In order to connect via a high-voltage wire, an anode cap is attached to one end of the high-voltage wire, and the anode cap is brought into close contact with the anode to electrically connect the high-voltage wire and the CRT anode. It is a target.

Conventionally, as shown in FIG. 5, an anode cap assembly in which the anode part of this CRT is connected to an FBT is one in which a spring is soldered to a bowl-shaped insulating rubber elastic body and a high-voltage wire conductor. Have been. FIGS. 5A and 5B are schematic views illustrating a conventional anode cap assembly, in which FIG. 5A is a cross-sectional view and FIG. 5B is a bottom view.

In FIG. 5, 1 is a high-voltage electric wire, 2 is a metal pipe, 3 is a spring, 4 is an anode cap, 5 is a neck of the anode cap, and 6 is a bowl-shaped anode cap. Department. The shapes of the anode cap and the spring vary depending on the designer, but the basic configuration and the assembling method are the same.
That is, the spring 3 is housed inside the cap after being fixed to the high-voltage electric wire 1 by soldering or the like.

FIG. 6 is a schematic view for explaining a typical procedure consisting of the following steps in a conventional method for assembling an anode cap assembly. The conductor of the high-voltage electric wire 1 is exposed by peeling the end of the high-voltage electric wire 1 to a predetermined length. Next, the spring 3 is temporarily fixed by various methods, the metal pipe 2 is caulked, and finally the conductor of the high-voltage electric wire 1 and the metal spring 3 are fusion-bonded with solder to strengthen the electrical connection. . Finally, the high-voltage electric wire processed into the anode cap 4 is inserted from one end of the spring 3 to which the spring 3 is not fixed.
At the top inside the anode cap 4.

[0006]

In this case, as shown in FIG. 5, the high-voltage electric wire 1 and the anode cap 4 are used integrally for assembly into a set. The wires were hanging out of the way. In addition, it takes time to cure the adhesive to attach the anode cap to the CRT. Therefore, the conventional anode cap assembly manufactured by these basic processes requires time and cost due to the variety of the processes, and has a complicated process in terms of quality control, so that it is difficult to maintain. Further, automatic assembly was difficult due to the complexity of the manufacturing process.

[0007]

As a result of various studies on the above problems, the present inventor has found that when assembling an anode cap assembly, a spring and a specific size for fixing and fitting the spring and a high-voltage electric wire to each other are provided. Or, it has been found that the novel anode cap assembly having a conductor lock portion having a width significantly improves the assembling efficiency.
By developing an assembly process that attaches and fits the anode cap to the CRT first and attaches the wires later, it is possible to improve the productivity and assemble a revolutionary anode cap assembly that has the potential for automatic processing. The inventors have found that a method is provided and have completed the present invention.

The present invention provides: a bowl-shaped rubber elastic body (a) which is attached in close contact with the outer wall of the anode part of a cathode ray tube; a spring (b) for fixing to the anode part; and a connection between them and a flyback transformer. In the anode cap assembly composed of the high-voltage electric wire (c), the spring (b) fixed inside the anode cap neck and the conductor of the high-voltage electric wire (c) have an inner diameter smaller than the outer diameter of the high-voltage electric wire of the spring or the outside of the conductor. An anode cap assembly secured by a conductor lock having a slit width smaller than the diameter. Further, the conductor of the high-voltage electric wire (c) is characterized in that it is a tin-plated single-wire conductor. Also, the conductor of the high-voltage electric wire (c) is characterized in that a plurality of soft copper wires or tin-plated soft copper wires are twisted, and the stranded wire is overcoated with tin plating. Also,

The spring (b) is also characterized in that the spring (b) is an integrated one formed by punching out a single metal plate. Further, the material of the spring (b) has a spring property and is made of SU.
It is also characterized by being one of S, tin plating, and bronze. The spring (b) is also characterized in that it has a shielding ability capable of sufficiently preventing X-rays leaking from the penetration part of the anode part of the cathode ray tube. In addition, (i) after the spring is mounted inside the top of the bowl-shaped anode cap, (ii) the conductor portion of the high-voltage wire is inserted first while penetrating the cylindrical holding portion of the high-voltage wire, and (i)
ii) A method of assembling an anode cap assembly in which a conductor portion of the high-voltage wire is fitted and fixed to a conductor lock portion of the spring. Further, the present invention provides a method of assembling an anode cap assembly, wherein (i) after mounting a spring-loaded anode cap on a CRT, and (ii) post-processing a high-voltage electric wire having been subjected to terminal processing.

Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic view showing the structure of a typical anode cap assembly of the present invention, wherein (a) is a cross-sectional view and (b) is a bottom view. In FIG. 1, 1 is a high-voltage electric wire, 5 is a cylindrical portion or a neck portion, 6 is a bowl-shaped cap portion, 7 is an anode cap, 8 is a spring, 9 is a top, Reference numeral 10 denotes a conductor lock portion, and reference numeral 11 denotes a storage portion including a flyback transformer.

The anode cap is made of a bowl-shaped insulating rubber elastic body (a), and is generally made of silicone rubber, EP.
A material excellent in electric insulation and flame retardancy such as synthetic rubber such as DM is used. The structure of the anode cap assembly according to the present invention basically includes a bowl-shaped rubber elastic body (a) attached in close contact with the outer wall of the anode part of the cathode ray tube, and a spring (b) for fixing to the anode part. And high-voltage wires connecting them to the storage part comprising the flyback transformer
(C), the spring (b) and the conductor of the high-voltage electric wire (c) fixed inside the anode cap neck have an inner diameter smaller than the outer diameter of the high-voltage electric wire of the spring or a slit width smaller than the outer diameter of the conductor. It is characterized in that it is fixed by the conductor lock portion (claim 1).

Specifically, according to FIG. 1, the structure of the anode cap is the same as that of the conventional product, and is fitted to the bowl-shaped cap portion 6, the cylindrical portion or neck portion 5 for holding the high-voltage electric wire, and the anode portion of the CRT. The spring 8 to be fixed is fixed via a conductor lock portion 10, for example, a storage portion 11 composed of a flyback transformer. Then, the conductor lock portion 10
In order to firmly fix the neck portion 5 and the spring 8 for holding the high-voltage electric wire to the housing portion, it is necessary to have an inner diameter smaller than the outer diameter of the high-voltage electric wire or a slit width smaller than the outer diameter of the conductor.

Next, the conductor of the high-voltage electric wire (c) of the present invention is preferably a single-wire conductor, preferably tin-plated, since electrical connection is to be guaranteed semipermanently only by metal contact. It is a conductor of soft copper wire (claim 2). Also,
As the conductor of the high-voltage electric wire, a so-called stranded wire obtained by twisting a plurality of bare annealed copper wires or tin-plated annealed copper wires can be used. A so-called overcoated stranded conductor plated with tin is more reliable (claim 3).

Further, the structure of the metal spring (b) of the present invention will be described in detail. The spring has a hole or a slit for fitting with the conductor of the high-voltage electric wire, and the spring 8 is formed in a box shape so as to be easily housed inside the top portion 9 of the anode cap. The spring may be composed of a plurality of springs. However, from the viewpoint of cost, it is preferable that the spring is punched out of a metal plate and formed as a whole (claim 4).

The material of the spring is desirably sufficiently springy so that it can be semipermanently fitted to the CRT anode after molding. The spring is preferably made of SUS, tin-plated, bronze, or the like, which hardly causes corrosion or the like, since the spring is electrically connected to the conductor of the high-voltage electric wire in metal contact (claim 5). Further, it is desirable that the spring has a shielding function capable of sufficiently preventing X-rays leaking from the penetration portion of the anode part of the pole tube in terms of protecting workers. In order to provide the spring with a shielding function, a coating having an X-ray protection function such as lead may be applied.

Next, a typical shape of the spring (b) of the present invention will be described. FIG. 2 is a typical example of the spring of the present invention: (a) a front view, (b) a side view, (c) a top view, (d) a bottom view, and (f) (c) a magnified portion of FIG. It is a figure and is a schematic diagram explaining (g) typical hole shape and slit shape.

Next, the assembly process of the anode cap assembly of the present invention basically needs to include the following processes. That is, (i) after mounting the spring inside the top of the bowl-shaped anode cap, (ii) inserting the conductor portion of the high-voltage electric wire first while penetrating the cylindrical holding portion of the high-voltage electric wire, (iii) (7) The conductor portion of the high-voltage electric wire is fitted and fixed to the conductor lock portion of the spring (claim 7).

FIG. 3 is a process diagram illustrating a typical assembling method of the anode cap assembly of the present invention. The assembly process of the present invention can be basically manufactured in two steps of-
There is an advantage that the conventional assembly process can be reduced to half or less. Therefore, there is an advantage that the assembling process of the present invention is simple and can be automated. FIG. 4 is a conceptual diagram of an automatic processing and assembling machine in which the assembling process of the anode cap assembly of the present invention is automated.

The automatic machining and assembling machine basically comprises: More specifically, the supplied high-voltage electric wire is processed by a high-voltage electric wire terminal processing machine to process a terminal (peeled off), and an anode cap supplied by a cap feeder is separately arranged by a cap aligning machine. Then, a spring is inserted by a spring insertion machine, and then the processed high-voltage electric wire is inserted and fitted into a high-voltage electric wire mounting machine, which consists of three elements, which can further reduce the assembly processing cost.

Further, according to the present invention, as an assembly process, CR
After attaching the anode cap with spring to T,
The terminal-processed high-voltage electric wire may be post-processed (claim 8). In this case, a major change is that a color TV manufacturer and a palcon monitor manufacturer can cope with the production, and a reduction in cost and improvement in quality reliability can be expected by simplifying the assembly process of the anode cap assembly. At this time, the assembling can be further facilitated by a method in which the hole diameter of the neck portion of the Arnold cap is enlarged and heat set, and the hole diameter is contracted by heating after inserting the high voltage electric wire.

[0021]

As described above, since the anode cap assembly having a novel structure of the present invention is provided, the assembly efficiency can be remarkably improved. In addition, the development of the novel assembly process of the present invention provides a revolutionary assembly method that has the potential for improved productivity and automatic processing.

[Brief description of the drawings]

FIG. 1 is a schematic view showing the structure of a typical anode cap assembly of the present invention, wherein (a) is a cross-sectional view thereof, and (b)
Is a bottom view thereof.

FIG. 2 is a typical example of the spring of the present invention, wherein (a) is a front view of the spring, (b) is a side view of the spring, (c) is a top view of the spring, and (d) is a spring. (F) shows the spring (c)
It is an enlarged view of a part, and (g) is a schematic diagram explaining the typical hole shape and slit shape of the spring.

FIG. 3 is a process diagram illustrating a typical assembling method of the anode cap assembly of the present invention.

FIG. 4 is a conceptual diagram of an automatic processing and assembling machine that automates an assembling process of an anode cap assembly according to the present invention.

FIGS. 5A and 5B are schematic views illustrating a conventional anode cap assembly, in which FIG. 5A is a cross-sectional view and FIG. 5B is a bottom view.

FIG. 6 is a schematic diagram illustrating a typical procedure consisting of the following in the conventional method of assembling an anode cap assembly.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 High-voltage electric wire 2 Metal pipe 5 Tubular part or neck of anode cap 6 Bowl-shaped cap part of anode cap 4, 7 Anode cap 3, 8 Spring 9 Top part 10 Conductor lock part 11 Storage part

Claims (8)

[Claims] 1. A bowl-shaped rubber elastic body (b) which is attached in close contact with the outer wall of the anode part of a cathode ray tube, a spring (b) for fixing to the anode part, and a high-voltage electric wire connecting them to a flyback transformer In the anode cap assembly consisting of (c), the spring fixed inside the anode cap neck (b)
And the conductor of the high-voltage electric wire (c) is fixed by a conductor lock portion having an inner diameter smaller than the outer diameter of the high-voltage electric wire of the spring or a slit width smaller than the outer diameter of the conductor.
Anode cap assembly. 2. The anode cap assembly according to claim 1, wherein the conductor of the high-voltage electric wire is a tin-plated single-wire conductor. 3. The conductor of the high-voltage electric wire (c) is obtained by twisting a plurality of annealed copper wires or tin-plated annealed copper wires, and the stranded wire is overcoated with tin plating. The anode cap assembly according to claim 1. 4. The anode cap assembly according to claim 1, wherein said spring (b) is an integrated member formed by stamping out a single metal plate. 5. The anode cap assembly according to claim 1, wherein a material of the spring has a spring property and is one of SUS, tin plating, and bronze. 6. The spring according to claim 4, wherein said spring has a shielding ability to sufficiently prevent X-rays leaking from a penetrating portion of an anode part of a cathode ray tube. Anode cap assembly. 7. The method for assembling the anode cap assembly according to claim 1, wherein (i) after mounting the spring inside the top of the bowl-shaped anode cap, and (ii) a high-voltage electric wire. (Iii) the conductor portion of the high-voltage electric wire is fitted and fixed to the conductor lock portion of the spring, with the conductor portion of the anode cap being inserted through the cylindrical holding portion of the high-voltage electric wire. How to assemble the assembly. 8. The method for assembling the anode cap assembly according to claim 1, wherein (i) after mounting a spring-loaded anode cap on the CRT, and (ii) post-processing the high-voltage electric wire having been subjected to terminal processing. Characterized in that
How to assemble the anode cap assembly.