JPH0458138B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a sealing jig for a cathode ray tube, particularly a flat cathode ray tube.

BACKGROUND ART AND PROBLEMS The present applicant has developed a cathode ray tube, particularly a flat cathode ray tube, with a flat glass tube body 1 as shown in a perspective view in FIG. 1 and a vertical cross-sectional view in FIG. ,
First and second panel parts 2 and 3 facing each other and joined and sealed by fritting so as to form a flat space 7 therebetween; and these first and second panel parts 2 and 3. A cathode ray tube was devised in which a flat funnel portion 4 was joined and sealed to one side of the tube by the same frit method. In this case, in the funnel part 4, the first and second panel parts 2 and 3 are joined and sealed at the large-diameter open end 4a, and the neck part 5 is welded to the small-diameter open end 4b. An electron gun 6 is housed within the network portion 5.

As shown in an exploded perspective view in FIG. 3, the first and second panel sections 2 and 3 have main surfaces 2a and 3a facing each other, and other surfaces excluding the side edges joined to the funnel section 4. It has circumferential side surfaces 2b and 3b extending from each of the three side edges of the panel, and the mutually corresponding end surfaces of these circumferential side surfaces 2b and 3b are fritted so that a flat space 7 is formed between both panel parts 2 and 3. The open end 4a of the funnel portion 4 is bonded and sealed to the cutout portions of the peripheral surfaces 2b and 3b of the panel portions 2 and 3 so that the funnel portion 4 of the flat space 7 communicates with each other.

A fluorescent screen 8 is formed on the inner surface of the surface 2a of the first panel section 2. This surface 2a is arranged so that the fluorescent screen 8 faces the electron gun 6.
As we reach the tip side of the electron gun 6,
As it reaches the side opposite to the side on which it is disposed, it is curved so that it approaches or intersects the tube axis. Although not shown, the electron beam emitted from the electron gun 6 is transmitted to the funnel portion 4 and the neck portion 5.
The phosphor screen 8 is scanned horizontally and vertically by horizontal and vertical electromagnetic deflection means disposed on the outer periphery of the tube near the junction of The observation is made from the side of the surface 3a of the second panel section 3, which is opposite to the surface 2a of the first panel section 2.

Purpose of the Invention As described above, the present invention provides a method for joining and sealing the first and second panel parts 2 and 3 and the funnel part 4 having the neck part 5 by interposing a frit between them. The purpose of the present invention is to provide a sealing jig for cathode ray tube tube bodies, which allows the three components to be sealed and combined simultaneously by setting these components in a predetermined positional relationship and passing them into a heating furnace. .

SUMMARY OF THE INVENTION The present invention includes an inclined pedestal, a ring-shaped holder, and a weight means. The inclined mount includes abutting means for abutting against the outer surface of the funnel having the neck portion of the cathode ray tube body, a receiving portion for receiving the base of the funnel, and a locking means for locking the funnel having the neck portion. The funnel portion having the neck portion can be set upright with the large-diameter opening end facing upward at a desired inclination. The ring-shaped holder is arranged so that the first panel section of the cathode ray tube body having a phosphor screen on its inner surface and the opposing second panel section are brought into pressure contact with each other in a predetermined positional relationship. It consists of a ring body fitted around the outer periphery of the second panel part. In this manner, the first and second panel sections are placed on the large-diameter opening end of the funnel section set on the above-mentioned inclined frame, with the first and second panel sections abutting each other. On the other hand, the weight means is suspended on the ring-shaped holder in this state. In this way, the first and second panel parts and the funnel part are set in a predetermined positional relationship with each other by the cooperation of the inclined frame, the ring-shaped holder, and the weight means. Make sure it is pressed. Furthermore, these first and second
Frits are interposed in advance between the panel portions of the panel portions and between the end faces of these and the funnel portions to be joined and sealed, and these are placed on the above-mentioned inclined frame, ring-shaped holder, and weight. By passing it through a heating furnace, for example, a tunnel furnace, for a required period of time while being pressed and held in a predetermined positional relationship by means,
The first and second panel parts and the funnel part are joined and sealed simultaneously.

Embodiment An example of the present invention will be described in detail with reference to FIG. 4 and subsequent figures. In this example, when obtaining the flat cathode ray tube body 1 explained in FIGS. 5 and their mutual relationship are the same as those described in FIGS. 1 to 3, so corresponding parts are given the same reference numerals and redundant explanation will be omitted.

In the present invention, as shown in FIG. 4, for example, a U-shaped arm 21 made of a common heat-resistant metal and extending in the horizontal direction is mounted on a common base 20 made of a heat-resistant metal. A plurality of inclined frames 22 are arranged side by side in the horizontally extending portion of 21.

Each of the inclined frames 22 is made of a heat-resistant metal plate,
A fixing plate 23 made of heat-resistant metal is attached to the back of each of the arms 21 to be fixed to the arm 21.
1 is attached. Each inclined pedestal 22 is arranged so that the angle α between its front surface 22a and the plane on which the leg base 20 is disposed (i.e., the horizontal plane) has a required inclination of 90° or more. And on this surface 22a,
Along this plane, the funnel part 4 having the neck part 5 is set with the opening end on the large diameter side facing upward. Therefore, this inclined pedestal 22 includes an abutment means 24 that abuts against the outer surface of the funnel section 4 on the side corresponding to the first panel section 2, that is, the back surface, and sets the position thereof; a receiving part 25 that holds the base of the neck part 5, that is, a funnel-shaped inclined surface on the side having the neck part 5 on both sides thereof, a contact part 26 that brings the peripheral surface of the neck part 5 into contact, and this funnel part. 4 is set at a predetermined position by the abutting means 24, the receiving portion 25, and the abutting portion 26 described above, and a locking means 27 is provided for locking the mount 4 to the pedestal 22.

The abutting means 24 of the funnel portion 4 is configured, for example, by drilling two screw holes on the left and right sides in the pedestal 22 and screwing them into each screw so as to penetrate from the back side of the pedestal 22 to the front surface 22a. , the tips of these screw rods can be used as abutting parts with the left and right parts of the back surface of the funnel part 4 mentioned above.

Further, the receiving part 25 is constructed by planting a pair of pins 28 from the front surface 22a of the pedestal 22, and fitting a cylindrical body 29 made of graphite, for example, to the pins 28,
The circumferential surface of the cylindrical body 29 allows the funnel-shaped inclined surface of the funnel portion 4 to be received on both left and right sides of the neck portion 5.

The abutting part 26 is constituted by a pillow body made of graphite, for example, which has a groove 26a formed in the center on the front surface 22a of the pedestal 22 to receive the back peripheral surface of the neck part 5, and is attached and fixed by screws 30. .

The locking means 27 is arranged between the receiving part 25 and the abutting part 26. This means 27 extends in a direction across the arrangement part of the neck part 5, and attaches a metal fitting 31, which is bent in a U-shape in the width direction, to the surface 22a of the pedestal 22 with a screw 32. A leaf spring 35 and a hook 36 thereof are pivotally supported on pins 33 and 34 provided at both left and right ends thereof, respectively, extending between opposing U-shaped plate portions.

In this way, as shown in FIG. 7 and FIG.
The funnel-shaped inclined surfaces are received from below by the receiving parts 25 on both sides of the neck part 5, and the funnel part 4 is fitted into the groove 26a of the abutting part 26. With the neck portion 5 set at a predetermined position on the surface of the pedestal 22, the locking means 2
The leaf spring 35 is held by the leaf spring 35 of 7, and its free end is locked by the hook 36.
The neck part 5 and funnel part 4 are attached to the frame 2 by
2, that is, toward the receiving portion 24 and the abutting portion 26.

In addition, as described above, on the upper part of the inclined pedestal 22, while the funnel part 4 having the neck part 5 is set on the pedestal 22, a ring-shaped structure as described later is placed on the upward large-diameter opening end 4a. The first panel part 2 is arranged so that the end surface to be joined to the funnel part 4 of the combination of the first and second panel parts 2 and 3, which are brought into a predetermined positional relationship with each other by the holder, is set exactly. an abutment means 50 that abuts against the outer surface of the surface 2a to regulate the height of the pedestal 22 from the surface 22a;
Means 51 is provided for receiving the peripheral wall surface of the combination body and setting its position in the left and right direction. Here, the abutting means 50, like the abutting means 51 for the funnel portion 4 described above, may be constituted by a pair of screw rods screwed through the pedestal 22, and the outer surface of the panel 2 is brought into contact with the tips of the screws. It can be done to suit. In addition, the means 51
In this case, one bent end of the L-shaped metal fitting is screwed to the frame 22, and the other bent end is screwed to the left or right peripheral side wall of the combination of the first and second panel parts 2 and 3. and set its position.

On the other hand, the first and second panel parts 2 and 3 are fitted together so as to cover their outer peripheries with the first and second panel parts 2 and 3 abutting each other, and the panel parts 2 and 3 are brought into a predetermined positional relationship and pressed together. A ring-shaped holder 37 is provided to maintain the position. As shown in FIG. 9, the holder 37 is formed into a substantially rectangular ring shape by, for example, a pair of U-shaped halves 37a and 37b made of metal strips and welded together. Here, each of the halves 37a and 37b has an inclination that widens downward along the inclination of the outer surface of each surface 2a and 3a of the first and second panel parts 2 and 3. U-shaped leaf springs 38a and 38b are attached to the inner surface of each half body 37a and 37b by screws or the like along the inner periphery of each half body 37a and 37b, respectively. These leaf springs 38a and 38b are integrally formed with a pair of elastic tongues 39a and 39b bent inwardly at both ends of the leaf springs 38a and 38b. Then, the second panel parts 2 and 3 are elastically pressed in a direction in which they abut against each other, so that they are brought into pressure contact with each other and are maintained in a predetermined positional relationship so that they match.

A weight means 40 is suspended on this ring-shaped holding body 37. This weight means 40 has, for example, a cylindrical metal weight 41, both ends of which are supported by a pair of metal arms 42a and 42b, and hooks provided at the upper ends of these arms 42a and 42b. The parts 43a and 43b are hooked onto protrusions 45a and 45b of arms 44a and 44b attached to both left and right sides of the ring-shaped holder.

In this way, by fitting the ring-shaped holder 37, the first
and the combination of the second panel parts 3 and 4,
As shown in FIG. 7 and FIG. 7, the first and second tubes are attached to the funnel portion 4, which is mounted on the inclined pedestal 22 as described above and has the large-diameter opening end 4a facing upward. The combination of panel parts 2 and 3 is placed so that the open end surfaces of the combination are abutting each other. In this case, the combination of both panel parts 2 and 3 is mounted on the frame 22.
By abutting the outer surface of the surface 2a of the panel portion 2 against the abutting means 50 and abutting the circumferential side wall against the means 51, the combination of both panel portions 2 and 3 is placed in a predetermined position relative to the funnel portion 4. It will be set in a relationship.
A weight means 40 is suspended on the ring-shaped holder 37 as explained in FIG. 9. In this case, the weight 41 is
The inclination of the pedestal 22, the suspension position of the weight means 40, etc. are selected so that it hangs against the back surface of the pedestal 22. In this way, the weight 41 applies a downward force to the holder 37 without swinging unnecessarily, and this holder 37 supports the first and second panel parts 3.
and 4 into the outer periphery of the funnel portion 4 to bring them into moderate pressure contact with each other, and furthermore, due to the load by the weight means 40 applied to the first and second panel portions 2 and 3, these are pressed against the funnel portion 4. Apply appropriate pressure to the

Incidentally, for example, a frit material such as glass frit, that is, a bonding material is applied in advance to the butt joint end surface of the second panel part 3 and the first panel part 2 and to the large-diameter opening end 4a of the funnel part 4. As described above, the pedestal 22 and the ring-shaped holder 3 are
7, and the weight means 40, the net portion 5
The funnel portion 4 and the first and second panel portions 2 and 3 are connected in a predetermined relationship to each other, and the grooves are connected to a heating furnace, for example, a tunnel furnace (not shown), together with a common footrest 20. Each part 4, 2 and 3
By performing the fritting with the frit material interposed between them, it is possible to obtain the flat tube body 1 in which the three members are sealed and joined together by the fritting at the same time.

Effects of the Invention According to the above-mentioned jig of the present invention, like the above-mentioned flat cathode ray tube body, the mutual contact between the three parts such as the first panel part 2, second panel part 3, funnel part 4, etc. When obtaining the tube body 1 by sealing, the first panel section 2 and the second panel section 3 are separated by the cooperation of the inclined frame 22, the ring-shaped holder 37, and the weight means 40. Since the sealing and the sealing with the funnel part 4 having these neck parts 5, that is, the fritting can be performed at the same time, the handling and sealing work are much easier compared to the case where each part is sealed individually. , and as mentioned above, the common footrest 2
Since a plurality of jigs according to the present invention can be arranged in 2 to obtain a plurality of tube bodies 1 at the same time,
Furthermore, its mass productivity can be improved.

[Brief explanation of the drawing]

1 and 2 are a perspective view and a vertical sectional view of a flat cathode ray tube using the jig of the present invention, FIG. 3 is an exploded perspective view of the cathode ray tube body, and FIG. 4 is a diagram of the jig of the present invention. A perspective view of an example, FIG. 5 is a side view, and FIG.
The figure is a perspective view of an example of the inclined frame, FIGS. 7 and 8 are a front view and a bottom view of a part of FIG. 4, respectively, and FIG. 9 is a perspective view of an example of the ring-shaped holder and weight means. It is. 1 is a cathode ray tube body, 2 and 3 are its first and second panel parts, 4 is a funnel part, 5 is a neck part, 6 is an electron gun, 8 is a fluorescent screen, 20 is a footrest, 21
is an arm, 22 is an inclined frame, 24, 25 and 26
37 is a ring-shaped holder, and 40 is a weight means, respectively.

Claims (1)

[Claims] 1 comprising an inclined pedestal, a ring-shaped holder, and a weight means, the inclined pedestal receiving an abutting means for abutting the outer surface of a funnel having a neck portion of a cathode ray tube body and a base of the funnel; It is provided with a receiving part and a locking means for locking the funnel part having the neck part, so that the funnel part having the neck part is stood upright at a desired inclination with its open end facing upward. can now be set to
The ring-shaped holder is configured to hold a first panel portion of the cathode ray tube body having a phosphor screen on its inner surface and a second panel portion opposing the first panel portion in a predetermined positional relationship with each other. and the second panel part so as to be able to hold the first and second panel parts in the predetermined positional relationship with each other, and the first and second panel parts
When the panel section is held by the ring holder, it can be placed on the open end of the funnel section set on the inclined frame, and in this state, the weight means is suspended by the ring holder. A sealing jig for a cathode ray tube body, wherein the first and second panel portions are set and pressed against the funnel portion in a predetermined positional relationship.