• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention provides a cathode ray tube having an explosion-proof reinforcing band on the side wall of the panel, wherein the reinforcing band is formed by joining both ends of the band-shaped metal plate 6 partially folded in the width direction to form a double structure. It is formed in the shape of a closed path along the side wall, and it joins so that one edge part of the said both ends and the other edge part may become a double structure in at least one part. Thereby, a reinforcement band with high strength can be realized at low cost without using a special member.
    公开号:KR20010078255A
    申请号:KR1020010004894
    申请日:2001-02-01
    公开日:2001-08-20
    发明作者:니시카타고이치
    申请人:모리시타 요이찌；마쯔시다덴기산교 가부시키가이샤；
    IPC主号:
    专利说明:

    Cathode ray tube {Cathode ray tube}
    [14] BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to cathode ray tubes used in computer monitors and television receivers, and more particularly to an explosion-proof reinforcement band.
    [15] As an example of the reinforcing band to be fitted to the panel of the cathode ray tube, as shown in FIG. 6, a band main body in which one side in the width direction of the band-shaped metal plate is folded in the back portion 5 and partially formed in a double structure ( 16 and a closed shape reinforcing band 18 composed of a connecting plate metal 17 which serves to connect the ends of the band main body 16 at the contact portions facing the ends of the band main body 16 are widely known. have.
    [16] Since such a reinforcing band 18 is formed of an anti-folding band-shaped metal plate, its strength is high, and in particular, it is employed in a cathode ray tube of a large type that requires a large force when fitting it to a panel.
    [17] However, since the reinforcing band 18 as described above uses the connecting plate metal 17, it has the following problem.
    [18] Since the connecting plate metal 17 is easily pressed by the outward force which is likely to occur at the contact portion of the band body 16, in order to suppress this, the connecting plate metal 17 has a strong material or a thick plate. It was often necessary to use different materials and thicknesses in the connecting plate metal 17 and the band body 16. For this reason, there existed a subject that the cost increase of material cost, and the difficulty of welding generate | occur | produce. Moreover, since the member different from the band main body 16 is used as the connecting plate metal 17, the number of parts increases, and this also leads to the problem that the number of steps increases or the number of steps increases.
    [19] This invention is made | formed in view of the said subject, Comprising: It aims at providing the cathode ray tube provided with this high strength reinforcement band, without using a special member.
    [20] In order to solve the above problems, the cathode ray tube of the present invention is a cathode ray tube having an explosion-proof reinforcing band on the side wall of the panel, wherein the reinforcing bands are formed at both ends of the band-shaped metal plate partially folded in reverse to each other. Is formed in a closed shape along the side wall of the panel, and is joined so that one end and the other end of the both ends are triple-structured at least in part.
    [21] By doing in this way, a reinforcement band can be joined strongly, without using a connecting plate metal. Therefore, the tightening strength can be sufficiently secured while suppressing the material cost and the manufacturing cost, and a cathode ray tube having a reinforcing band having a high explosion prevention effect can be realized.
    [22] In the above, at one end of the both ends of the reinforcing band, the distal end of the outer plate portion extends in the longitudinal direction of the reinforcing band than the distal end of the inner plate portion, and at the other end, the distal end of the inner plate portion is the distal end of the outer plate portion. It is preferable to extend in the longitudinal direction of the said reinforcement band rather than.
    [23] By doing in this way, the overlapping which uses the material of a reinforcement band without waste and has at least one part triple structure can be easily implement | achieved.
    [24] Moreover, it is preferable that the angle of the said both ends of the said reinforcement band is cut.
    [25] Moreover, it is preferable that the front-end | tip of the said inner board part located in the panel side of the said reinforcement band has a notch in the part corresponded to the protrusion part in the said side wall of the said panel.
    [26] By doing in this way, damage can be prevented from forming in the panel side wall.
    [1] BRIEF DESCRIPTION OF THE DRAWINGS The figure which shows an example of the shape of the edge part and the method of overlapping in the junction part of the reinforcement band of the cathode ray tube which concerns on this invention.
    [2] BRIEF DESCRIPTION OF THE DRAWINGS The figure which shows the shape in which the edge part was joined at the junction part of the reinforcement band of the cathode ray tube which concerns on this invention.
    [3] 1C is a view showing a 1C-1C cross section in FIG. 1B;
    [4] 1D is a view showing a 1D-1D cross section in FIG. 1B;
    [5] 2 is a side view of a cathode ray tube according to the present invention;
    [6] 3 is a perspective view showing a reinforcing band of a cathode ray tube according to the present invention;
    [7] 4 is a view showing an example of a method of cutting a material of a strip-shaped metal plate serving as a reinforcing band of a cathode ray tube according to the present invention;
    [8] 5 is a diagram showing another example of the shape of the end portion at the junction of the reinforcing band of the cathode ray tube according to the present invention;
    [9] 6 is a perspective view showing a conventional reinforcing band.
    [10] <Description of the symbols for the main parts of the drawings>
    [11] 1 panel 3 reinforcement band
    [12] 6: band-shaped metal plate 7: outer plate part
    [13] 8: inner plate
    [27] EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described using drawing.
    [28] 2 is a side view of a cathode ray tube according to an embodiment of the present invention. A panel 1 having a fluorescent surface (not shown) formed therein and a shadow mask (not shown) opposite thereto, and a funnel 2 having an electron gun (not shown) therein. The outer band is comprised, and the reinforcement band 3 is fitted in the outer periphery of the side wall of the panel 1. As shown in FIG.
    [29] As shown in Fig. 3, the reinforcing band 3 is joined to the ends of the band-shaped metal plate 6 partially formed in a double structure by folding one side 4 in the width direction opposite to the retracting portion 5. And it is formed in the closed shape. The outer plate portion 7, which is the reversely folded portion, follows the inner plate portion 8 on the outer circumferential side of the reinforcing band 3. The width of the outer plate 7 is narrower than the width of the inner plate 8. The reinforcing band 3 is shorter than the outer side length of the panel side at room temperature, is fitted to the outer periphery of the panel in a state of thermal expansion by applying high heat, and then, when returned to room temperature, a tightening force is applied to the side surface of the panel. It is designed to maintain a balance with the pressure inside the panel. The reinforcing band 3 is fitted to the panel so that the bent back portion 5 is on the screen side.
    [30] Next, the junction part of the reinforcement band which shows the characteristic of this invention best is demonstrated.
    [31] FIG. 1A is a view showing the shape of both ends of the reinforcing band and a method of overlapping, and FIG. 1B is a view showing the shape where both ends are joined together.
    [32] The band-shaped metal plate serving as the reinforcing band is partially folded in the upper part in the drawing, and has a partially double structure. In the drawing, the tip of the outer plate is located to the right of the tip of the inner plate, together with the left and right ends joined together. As a result, the inner side plate part 8a extends in the left direction rather than the front end 7a 'of the outer side plate part 7a at the right end part 9 in the figure, and the outer side plate part (at the left end part 10). 7b) extends to the right direction rather than the front end 8b 'of the inner side plate part 8b. And as shown by the dashed-dotted line in FIG. 1A, a part of the left outer side plate part 7b is a part of the right outer side plate part 7a, and a part of the left inner side plate part 8b is a right inner side plate part. Overlapping on a part of (8a), respectively, the overlap of the reinforcing band is at least in part a triple structure (here left outer plate 7b + right outer plate 7a + right inner plate 8a and left outer plate) (7b) + left inner side plate part 8b + right inner side plate part 8a). The left and right ends thus overlapped are welded together at a position indicated by x in FIG. 1B, for example. 1C shows the 1C-1C cross section in FIG. 1B, and FIG. 1D shows the 1D-1D cross section in FIG. 1B.
    [33] As one embodiment of this invention, the reinforcement band used for the cathode ray tube for television receivers with a screen diagonal of 68 cm is mentioned. The band-shaped metal plate has a thickness of 1.2 mm, a width of 30 mm of the outer plate, a width of 55 mm of the inner plate, and a left inner plate 8b from the tip 7b 'of the left outer plate 7b in FIG. 1A. The band longitudinal distance to the front end 8b 'of and the band longitudinal distance from the front end 7a' of the right outer side plate part 7a to the front end 8a 'of the right inner side plate part 8a were 35 mm. . In addition, as shown in FIG. 1B, the welding point is set to 8 points in total in the triple structure part and 2 points in total in the double structure part. Here, the spot welding method of welding a plurality of metal plates by two electrodes is used. What is necessary is just to select the size of a strip | belt-shaped metal plate, the number of welding, etc. suitably according to the size of a cathode ray tube, the thickness of a strip | belt formation metal plate, etc.
    [34] In order to confirm the bonding state of the reinforcing band shown in this embodiment, the tensile strength test up to the breaking limit of the reinforcing band, which is usually performed, was conducted. As a result, it was in the specification of the normal reinforcement band. Therefore, the bonding strength was sufficiently guaranteed under the same bonding conditions as in the present embodiment, and the tightening strength of the panel could be maintained.
    [35] As described above, since the reinforcing band of the cathode ray tube of the present invention can sufficiently secure the tightening strength without using a special connecting plate metal for the joining, the step for providing the connecting plate metal can be omitted. Material cost can also be suppressed.
    [36] In addition, since the metal plates to be welded have the same material and thickness, the electric power applied to the two welding electrodes can be equalized. For this reason, one electrode does not easily deteriorate first, the quality of an electrode is maintained long, and the loss of the electric power applied to an electrode can also be suppressed.
    [37] Moreover, since the size of the reinforcing band part which becomes the outermost diameter part of a cathode ray tube can be made small by not using the connection plate metal with a thick plate | board thickness, it leads to space saving of the set which has a cathode ray tube.
    [38] Moreover, in the junction part of the strip | belt-shaped metal plate used as a reinforcement band, the inner side board part extends in the longitudinal direction rather than the outer side plate part at one end, and the outer side plate part extends the longitudinal direction than the inner side plate part at the other end. Therefore, the material plate used as this strip | belt-shaped metal plate can be used without waste. As a result, as shown in FIG. 4, if the length required as a strip-shaped metal plate from the long material board 11 is cut into steps like the one-dot chain line 12, and then folded back in the advantage chain line 13, All of them can form a reinforcing band without waste and simply.
    [39] In addition, as shown in FIG. 5, it is more preferable to cut the angle | corner of left and right edge parts, and to form surface cut-out parts 14a-14f. This eliminates the sharp angle at the end, making it difficult for the angle to form damage on the outer surface of the panel during the production of the cathode ray tube, and is effective in preventing explosion or shrinkage. In addition, even when there are many deviations in the width direction when overlapped, the sharp angle is less likely to be pushed out from the side edge of the reinforcing band, and it is safe to handle the operator. As shown in Fig. 5, the cut surface may be formed by cutting the angle of the end portion at 45 degrees with respect to the longitudinal direction of the strip-shaped metal plate, or may be formed by cutting the angle into an arc shape.
    [40] In addition, when overlapping, the cutout part 15 cuts the position corresponding to the protrusion part in the side wall of the panel called the mold match line of the front end 8a 'of the right inner side plate part 8a located at the most panel side. In this case, it is difficult to form damage in the mold match line, which is also effective in preventing explosion or shrinkage.
    [41] The reinforcing bands shown in this embodiment are the ones where the tip 8b 'of the left inner plate 8b and the tip 7a' of the right outer plate 7a abut, as shown in FIGS. 1A to 1D and FIG. 5. However, the present invention is not limited to this, and may have a gap between the tip 8b 'of the left inner plate 8b and the tip 7a' of the right outer plate 7a. In this case, since the inner circumferential dimension of the reinforcing band can be made constant even if there is an error in the length dimension of the band-shaped metal plate cut as shown in FIG. 4, there is an advantage in manufacturing that the dimensional defect does not become.
    [42] In addition, in FIG. 1 thru | or 5 which showed this embodiment, although the strip | belt-shaped metal plate has a structure which overlaps the left edge part on the edge part on the right side of drawing, it goes without saying that the left and right overlap may be reversed. In this case, however, at the left end, the inner plate 8b extends in the rightward direction from the tip of the outer plate 7b, and at the right end, the outer plate 7a is left of the inner plate 8a. Extend in the direction.
    [43] In this embodiment, spot welding is used as a method of joining the ends of the band-shaped metal plates. However, as another joining method, welding such as plasma welding, laser welding, or caulking bonding applied by force may be used. good.
    [44] As described above, according to the present invention, the clamping strength can be sufficiently secured while the material cost and the manufacturing cost are suppressed, and a cathode ray tube having a reinforcing band having a high explosion prevention effect can be realized.
    权利要求:
    Claims (4)
    [1" claim-type="Currently amended] In a cathode ray tube having an explosion-proof reinforcement band on the side wall of the panel, the reinforcing band is formed in a closed shape along the side wall of the panel by joining both ends of a strip-shaped metal plate partially folded to the opposite side to form a double structure. The cathode ray tube which is joined so that the end part of one of the said both ends and the other end part may become a triple structure at least one part.
    [2" claim-type="Currently amended] The tip of the outer plate portion extends in the longitudinal direction of the reinforcing band than the tip of the inner plate portion at one end of the both ends of the reinforcing band, and at the other end the tip of the inner plate portion is outward. A cathode ray tube, characterized in that it extends in the longitudinal direction of said reinforcing band than the tip of the plate portion.
    [3" claim-type="Currently amended] The cathode ray tube according to claim 1, wherein angles of both ends of the reinforcing band are cut.
    [4" claim-type="Currently amended] The cathode ray tube according to claim 2, wherein a tip of the inner plate portion located on the panel side of the reinforcing band has a cutout at a portion corresponding to a protrusion on the side wall of the panel.
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    同族专利:
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    DE60108542T2|2006-01-12|
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    JP3684976B2|2005-08-17|
    DE60108542D1|2005-03-03|
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    CN1203518C|2005-05-25|
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2000-02-01|Priority to JP2000023686A
    2000-02-01|Priority to JP2000-23686
    2001-02-01|Application filed by 모리시타 요이찌, 마쯔시다덴기산교 가부시키가이샤
    2001-08-20|Publication of KR20010078255A
    2004-05-31|Application granted
    2004-05-31|Publication of KR100433814B1
    优先权:
    申请号 | 申请日 | 专利标题
    JP2000023686A|JP3684976B2|2000-02-01|2000-02-01|Cathode ray tube|
    JP2000-23686|2000-02-01|
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