JPS5917870Y2 - Metal parts for glass bonding - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a metal member that is interposed at a joint when joining members to be joined with glass.

Conventionally, when joining parts to be joined with glass, a low melting point glass is interposed on the joint surface, and the entire part to be joined is placed in a heating furnace, or the joint part is heated with a burner etc. to melt the low melting point glass. It was a bonding thing.

However, when glass-bonding the face plate and funnel of an image pickup tube, for example, the above method cannot be used because the built-in components are easily damaged by heating or atmospheric contamination.

Conventionally, a joining metal member is interposed between the joining surfaces, this joining metal member is resistance heated, and the low melting point glass that has been previously adhered to the joining metal member or the joining surface is melted to bond glass. is being carried out.

However, conventional metal members for joining have been made by simply bending a wire rod to match the shape of the joining surface, or simply punching a plate material according to the shape of the joining surface, and are easily deformed and away from the joining surface. In addition to detachment and uneven heating, those coated with glass tend to have the glass peeling off easily, and as a result, sufficient bonding strength cannot be obtained.

After this metal member is used as a heating element for glass bonding, it becomes a bonding member, so it is necessary to reliably heat the bonding surface and to achieve strong glass bonding.

The present invention was developed based on the above circumstances, and its purpose is to provide a bond that not only has high bonding strength but also prevents the peeling of low-melting point glass. The purpose of this invention is to obtain metal parts for use.

The present invention will be explained below according to an embodiment shown in the drawings.

In the figure, reference numeral 1 denotes a base body of a metal member for joining, and this base body 1 is made by joining approximately semicircular base halves 1a and lb formed by bending a wire rod made of an iron-nickel alloy and having a diameter of about 1, Q mm. It is formed into a substantially annular shape.

Further, both ends of the base half pieces 1a and lb are formed to protrude outward to form terminal parts 3 and 4.

A winding wire material 5 having a diameter of about 0.1 mm is wound around the outer peripheral surface of the base body 1 in a coil shape, excluding the terminal portions 3 and 4.

The surfaces of the other parts except for the terminal parts 3 and 4 are coated with low melting point glass 6 as necessary.

In order to bond glass using the bonding metal member of the embodiment of the present invention constructed as described above, first, as shown in FIG. It is interposed between the joint surfaces of funnel A and funnel B.

Then, a voltage is applied between the terminal portions 3 and 4 of this metal member for joining, and resistance heating is performed.

This heat generation melts the low melting point glass 6 coated on the surface to form a glass bond as shown in FIG.

In this embodiment, a winding wire 5 is provided on the surface of the base 1.
Since it is wrapped, its surface area is large and it firmly adheres to the low melting point glass 6.

Therefore, the strength of this glass bond increases.

Further, when the surface of the base body 1 is coated with the low melting point glass 6, this is prevented from peeling off.

Note that the present invention is not limited to the above-mentioned embodiment. For example, the cross section of the base body is not limited to a circular shape, but may be oval or rectangular. Also, the base body is not necessarily constructed by bending a wire material, but may be formed by stamping a plate material or the like. It may also be formed by cutting out.

Further, the cross section of the winding wire is not limited to circular, but may be elliptical or square, and the diameter, width, thickness, etc. of the winding wire are preferably smaller than that of the base.

Further, the winding pitch around the base body may be arbitrarily selected depending on the bonding surfaces of the members to be bonded.

Further, the surface of the base body does not necessarily need to be coated with low melting point glass, and this low melting point glass may be adhered to the joining surfaces of the members to be joined.

Further, the joining metal member does not necessarily have to be heated by electrical current, but may be heated by high frequency induction heating.

This eliminates the need for a terminal section. Furthermore, the present invention is of course applicable not only to the joining of a face plate and a funnel, but also to other glass members, or to joining similar or dissimilar members such as ceramics and other members.

As mentioned above, the present invention involves winding a winding wire around the surface of a metal base that is interposed between the joint surfaces of members to be joined and is heated by resistance to melt low-melting glass to form a joint. be.

Therefore, since the surface area of the base body is large and the base body is uneven, the low melting point glass can be firmly adhered to the base body, and the bonding strength can be increased.

Furthermore, if the substrate is coated with low melting point glass in advance, this low melting point glass can be prevented from peeling off, which is very effective.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, with the first being a perspective view and the second being a perspective view.
The figure is a cross-sectional view taken along the line ■■-II in FIG. 1, and FIGS. 3 and 4 are explanatory diagrams of a glass bonding process using one embodiment of the present invention.

Claims (1)

[Scope of utility model registration request] A glass bonding device comprising: a metal base formed in a shape corresponding to the shape of the joint surfaces of members to be joined; and a winding wire wound in a coil around the outer surface of the base. metal parts.