JP2007052995A - Device and method for connecting cable - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for connecting a cable with high insulation property which can be easily attached to and detached from an anode terminal, and wherein a high tension cable can be easily extracted from and inserted to an anode terminal, and to provide a method for connecting the cable. <P>SOLUTION: The device comprises a housing 20 for mounting the high tension cable 16 connected to the anode terminal 14 provided in an image display device 12 and a contact 26 connecting the anode terminal 14 inserted the housing 20 and the high voltage cable 16. The housing 20 is provided with a cylindrical part 18 into which the high tension cable 16 is inserted and a contact mounting part 22 housing the contact 26. The contact 26 is provided with a first elastic piece 30 connectable with the anode terminal 14 and a second elastic piece 32 connectable with a core wire 16a at a tip end of the high tension cable 16. The housing 20 has a push lever 24 releasing connection of the second elastic piece 32 and the core wire 16a. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a cable connecting device and a cable connecting method for connecting a high voltage cable to an anode terminal of an image display device.

  Conventionally, when an anode terminal provided on an image display device such as a cathode ray tube is connected to a cable, it is generally covered with a cover made of a material such as a flexible and insulating silicone resin for preventing discharge.

  As a method for connecting a high voltage cable, Patent Document 1 discloses that a cable covering portion of a cable is sandwiched between a pair of front side narrow portions of a covering portion by inserting a core wire of a high voltage cable into a cable terminal holding member in an anode cap first. A cable device is disclosed in which the cable is held by a holding side and the core wire is held by a pair of back side holding sides of the core wire holding part.

Patent Document 2 discloses a high-voltage connection device in which a dedicated plug is attached to the core wire at the distal end of the high-voltage cable and its coating portion, and is inserted into the opening of the anode cap. Thus, the round tip provided at the tip of the plug is inserted and connected to the contact ring provided in the anode cap.
JP 2004-335318 A Japanese Patent Laid-Open No. 05-205801

  In the above prior art, when an anode cap is attached to the anode terminal provided on the cathode ray tube, and a high voltage cable is inserted into the opening of the anode cap and pushed into the inside, the holding piece in the anode cap covers the high voltage cable. Since the part and the core wire are pinched and bite, it is difficult to remove and the cable cannot be easily inserted and removed.

  Furthermore, in the structure disclosed in Patent Document 2, when connecting to the anode cap, it is necessary to attach a dedicated plug to the tip of the high voltage cable, which is troublesome.

  In addition, the anode terminal provided in the conventional cathode ray tube is relatively large, and the cover cap that seals the entire anode terminal is a large one that is formed in a truncated cone shape using a flexible insulating material, and is difficult to reduce in size. It was a thing.

  The present invention has been made in view of the above-described problems of the prior art, and can be easily attached to and detached from the anode terminal, and the high-voltage cable can be easily connected to and disconnected from the anode terminal. An object is to provide a device and a cable connection method.

  The present invention comprises a housing to which a high voltage cable connected to an anode terminal provided in an image display device is attached, and a contact that is inserted into the housing and connects the anode terminal and the high voltage cable. A cylindrical portion through which the high-voltage cable is inserted and a contact mounting portion that accommodates the contact, wherein the contact includes a first elastic piece connectable to the anode terminal, and a core wire at the tip of the high-voltage cable. A cable connecting device including a connectable second elastic piece, wherein a push lever for releasing the connection between the second elastic piece and the core wire is attached to the housing.

  Furthermore, you may attach the lead holder provided with the through-hole which covers the said cylindrical part and is penetrated to the said housing, and penetrates a high voltage cable.

  Further, the present invention includes a base fixed to the image display device around the anode terminal and to which the housing is fixed, and uneven portions that can be fitted to each other are provided on the inner side of the base and the bottom of the housing. It is a cable connection device provided and formed so that the housing can be mounted on the base.

  Further, the base has an opening in which the contact mounting portion of the housing is located, and a fixing jig having a through-hole through which the anode terminal can be inserted is detachably attached to the opening. is there.

  According to another aspect of the present invention, there is provided a housing to which a high voltage cable connected to an anode terminal provided in an image display device is attached, and a contact that is inserted into the housing and connects the anode terminal and the high voltage cable. Includes a cylindrical portion through which the high-voltage cable is inserted and a contact mounting portion that accommodates the contact. The contact includes a first elastic piece connectable to the anode terminal, and a core wire at the tip of the high-voltage cable. A push lever for releasing the connection between the second elastic piece and the core wire is attached to the housing, and the housing is attached to the image display device around the anode terminal. A base for fixing is provided, and the base is formed with an opening where the contact mounting portion of the housing is located. A fixing jig provided with a through-hole through which the anode terminal can be inserted is attached in advance to the opening of the base, the base is fixed around the anode terminal, the fixing jig is removed, and the housing Is attached to the base, the anode terminal and the first elastic piece are connected, and then the core wire at the tip of the high-voltage cable is inserted into the cylindrical portion and connected to the second elastic piece of the contact It is a connection method.

  According to the cable connecting device and the cable connecting method of the present invention, it is easy to attach to the anode terminal provided in the image display device, and the high voltage cable can be easily attached to and detached from the anode terminal. Further, it can be securely attached to a small anode terminal and has a sufficient discharge preventing function.

  Hereinafter, embodiments of the cable connection device and the cable connection method of the present invention will be described. 1 to 4 show a first embodiment of the present invention. A cable connection device 10 of this embodiment is provided on a glass substrate of an image display device 12 such as a surface conduction electron-emitting device or a cathode ray tube. This is a device for connecting a high voltage cable 16 to a pin-shaped anode terminal 14. As shown in FIGS. 1 and 2, the cable connection device 10 of this embodiment is formed of a turret-shaped hollow housing 20 provided with a cylindrical portion 18. The housing 20 is injection-molded with resin. The housing 20 is formed with a housing bottom portion 20a formed in a disc shape, and a concavity and convexity portion 21 is formed concentrically on the bottom surface of the housing bottom portion 20a as shown in FIG. The outermost uneven portion 21 is formed in a shape that is partially broken at a predetermined interval. In addition, a hollow contact mounting portion 22 that accommodates a contact 26 described later is opened inside the uneven portion 21 near the center of the housing bottom portion 20a.

  The cylindrical portion 18 is similarly provided with an insertion hole 18a formed in a circular shape at the tip and formed along the long axis direction, and a through hole 18b having a rectangular opening. A small hole 19 through which the core wire 16a of the high voltage cable 16 is inserted is formed at the distal end of the insertion hole 18a. The small hole 19 opens into the space of the contact mounting portion 22. Further, the through hole 18 b also communicates with the space of the contact mounting portion 22.

  The upper surface of the insertion hole 18a is open at the center along the longitudinal direction, and communicates with the lower surface of the upper through hole 18b. Further, the upper end portion of the distal end portion of the cylindrical portion 18 of the through hole 18b is partly cut off by the width in the through hole 18b, and a U-shaped concave portion 18c is formed.

  A rod-like push lever 24 having a substantially rectangular cross section is slidably fitted into the through hole 18b. As shown in FIG. 1, the push lever 24 has an end portion 24 a inserted through the through hole 18 b that is one step narrower than other portions. Further, the taper is slightly tapered toward the end portion, and a hook-shaped protrusion 24b is provided on the lower surface to prevent it from coming off. As shown in FIG. 3, the other end is provided with a knob 24c whose longitudinal section is formed in an L-shape, and as shown in FIG. 2, on the upper side in the vicinity of the opening of the through hole 18b. It is formed so as to be able to fit into the provided recess 18c. Further, as shown in FIG. 1, a curved recess 24d is formed at the center bottom surface in the longitudinal direction of the push lever 24, and the high voltage cable 16 is inserted into the insertion hole 18a formed below the through hole 18b. It is made possible.

  A contact 26 is inserted into the contact mounting portion 22 opened on the bottom surface of the housing bottom portion 20a. The contact 26 is formed with a bottom surface portion 28 provided with a through hole 28a through which the anode terminal 14 is inserted. As shown in FIG. 3, an elastic piece 30 made of a pair of metal pieces extending from both ends of the bottom surface portion is bent. In addition, each end portion is formed to face each other above the through hole 28a of the bottom surface portion 28. A contact recess (not shown) that is recessed in a substantially triangular shape with the end as a base is formed at the opposing end of each elastic piece 30. As shown in FIG. 3, the elastic piece 30 is formed such that when the anode terminal 14 is inserted, the elastic piece 30 is bent in the insertion direction by the anode terminal 14, and the anode terminal 14 is held between the contact recesses.

  Above the contact 26, there is provided an elastic piece 32 formed by bending and swingable. The elastic piece 32 is bent along a straight line parallel to the insertion direction of the contact 26 of the contact mounting portion 22, and a sandwiched portion 32 a that is recessed into a substantially triangular shape with the end portion at the bottom is formed at the bent end edge. Has been. As shown in FIG. 3, the elastic piece 32 is formed so that the end 24 a of the push lever 24 abuts on the elastic piece 32 and can be retracted sideways. And the core wire 16a is inserted into the small hole 19 at the end of the insertion hole 18a, and the side surface of the core wire 16a is formed in pressure contact with the holding portion 32a provided in the elastic piece 32.

  In the cable connection method of this embodiment, first, the housing 20 in which an adhesive or the like is applied to the uneven portion 21 on the bottom surface is fixed around the anode terminal 14 provided on a glass substrate such as the image display device 12. At this time, the anode terminal 14 is inserted into the through hole 28a of the contact 26 and fixed. Next, the covering of the end portion of the high voltage cable 16 to be inserted into the insertion hole 18a of the cylindrical portion 18 is appropriately stripped to expose the core wire 16a. Then, the high voltage cable 16 is inserted through the insertion hole 18a with the exposed core wire 16a first. The core wire 16a of the high voltage cable 16 is inserted into the small hole 19 at the end of the insertion hole 18a, pressed against the holding portion 32a of the elastic piece 32 of the contact 26, and connected and fixed to the high voltage cable 16 and the anode terminal 14. Is completed.

  Next, in order to pull out the high voltage cable 16 from the housing 20, the push lever 24 is pressed and moved until the knob portion 24 c is fitted into the concave portion 18 c at the end of the cylindrical portion 18. As a result, the elastic piece 32 pressed against the core wire 16a is retracted by the push lever 24, the holding of the core wire 16a is released, and the high voltage cable 16 is pulled out in this state. This completes the extraction of the high voltage cable 16.

  According to the cable connection device and the cable connection method of this embodiment, it is easy to attach the housing 20 to the anode terminal 14 provided in the image display device 12 and to attach the high voltage cable 16 to the housing 20, The high voltage cable 16 can be easily pulled out by pressing the push lever 24. Moreover, it has the cylindrical part 18 integrally formed with resin, does not require a cover for preventing discharge, is easy to attach to the small anode terminal 14, and has sufficient insulation.

  Also, as shown in FIG. 4, the cylindrical portion 18 is formed short, and for preventing discharge, an insulating resin, rubber, or silicone resin through which the high voltage cable 16 is inserted so as to cover the end of the high voltage cable 16 is made. The lead holder 34 may be attached to the cylindrical portion 18. In this case, the length of the cylindrical portion 18 can be shortened, and when the housing 20 is fixed, the cylindrical portion 18 does not get in the way even if the mounting space is narrow. And workability is good. Further, by appropriately increasing the length of the lead holder 34, the effect of preventing discharge can be further enhanced.

  Next, a second embodiment of the cable connection device and cable connection method of the present invention will be described with reference to FIGS. Here, the same members as those in the above embodiment are denoted by the same reference numerals, and the description thereof is omitted. In the cable connection device 10 shown in FIG. 5, an annular portion 50 is formed with a width from the housing bottom portion 20 a to the upper surface of the tubular portion 18. The annular portion 50 is formed to be slightly larger than the outer periphery of the housing bottom portion 20a, and locking projections 52 project from the outer peripheral wall surface of the annular portion 50 at equal intervals.

  As shown in FIG. 6, concentric uneven portions 54 are formed on the back surface of the housing bottom portion 20 a. A contact mounting portion 22 into which the contact 26 is inserted is opened in the central convex portion 56 formed at the central portion of the uneven portion 54.

  As shown in FIG. 5, the housing 20 is provided so as to be fitted to a cylindrical base 58. An annular side wall 60 with which the housing 20 is fitted is erected on the base 58, and the annular side wall 60 is cut in the vertical direction at equal intervals and formed in a U shape, and is fitted to the locking projection 52. A possible locking part 60a is provided. The upper end of the annular side wall 60 is slightly tapered from the outside to the inside. The annular side wall 60 is provided with a cylinder engaging part 60 b cut along the cross-sectional shape of the cylindrical part 18 of the housing 20.

  Further, as shown in FIGS. 5 and 6, a concentric concave / convex portion 62 that can be fitted to the concave / convex portion 54 formed on the bottom surface of the housing 20 is formed on the inner bottom surface of the base 58. A center opening 64 is formed. On the side wall of the center opening 64, a fitting convex portion 64a protruding in a trapezoidal shape in the vertical direction is provided at an appropriate position. The end portion of the fitting convex portion 64a on the bottom surface side of the base 58 is slightly tapered downward toward the center side of the base 58. Engaging protrusions 64b are provided on the upper edge of the concavo-convex portion 62 where the fitting convex portion 64a is formed, corresponding to the center of the upper end portion of the fitting convex portion 64a. Concentric concavities and convexities are formed on the back surface of the base 58, and the outermost convex portion is partially broken.

  In the cable connection method of this embodiment, first, a base 58 having an adhesive applied to the back surface is attached concentrically with the anode terminal 14 provided on a glass substrate such as the image display device 12. At this time, the anode terminal 14 is fixed so as to be positioned at the center of the center opening 64 of the base 58. Next, the housing 20 is attached to the base 58. At this time, the concave and convex portions 54 and 62 of the housing 20 and the base 58 are fitted to each other, and the locking projection 52 on the side surface of the housing 20 is locked to the locking portion 60 a of the base 58. Then, as shown in FIG. 6, the high voltage cable 16 is inserted through the insertion hole 18 a of the housing 20. The core wire 16 a is held between the elastic pieces 32 of the contacts 26, and the high voltage cable 16 is fixed to the housing 20.

  Moreover, when pulling out the high voltage cable 16, the push lever 24 fitted and inserted in the cylindrical part 18 is pressed with a finger etc., and the high voltage cable 16 is pulled out in that state. This completes the extraction of the high voltage cable 16.

  According to the cable connection device and the cable connection method of this embodiment, even when the cylindrical portion 18 of the housing 20 attached to the anode terminal 14 provided on the glass substrate of the image display device 12 becomes an obstacle in the subsequent process, Since only the base 58 is bonded and fixed first, and the housing 20 can be mounted on the base 58 in the process after the peripheral circuit is attached, the assembly work is efficient. Further, since the housing 20 and the base 58 are fitted in a wide area by the concavo-convex portions 54 and 62, the creepage distance from the anode terminal 14 can be made longer, and a high discharge preventing effect against a high voltage is obtained. is there.

  Also, as shown in FIGS. 7 and 8, the cylindrical portion 18 is formed short, and the lead holder 34 into which the high voltage cable 16 is inserted so as to cover the end of the high voltage cable 16 may be covered with the cylindrical portion 18. Good. In this case, the length of the cylindrical portion 18 can be shortened, and when the housing 20 is mounted on the base 58, the cylindrical portion 18 does not get in the way even when the mounting space is narrow. It becomes easy and workability is good. Further, even when the high voltage cable 16 is removed, the cylindrical portion 18 does not get in the way and the workability is good.

  Next, a third embodiment of the cable connection device and the cable connection method of the present invention will be described with reference to FIGS. Here, the same members as those in the above embodiment are denoted by the same reference numerals, and the description thereof is omitted. In the cable connection device 10 of this embodiment, a fixing jig 70 for attachment is provided on a base 58 to which the housing 20 is fitted. The fixing jig 70 is detachably formed in the center opening 64 at the center of the base 58. The fixing jig 70 is formed of a transparent resin, and an annular frame 70a having an appropriate height and thickness is provided on the circumference of the main body 72 formed in a substantially disk shape. A part of the frame 70a is a peripheral portion. A fan-like engagement recess 70b is provided. The engaging recess 70b is provided in a pair from the center of the main body 72. The fixing jig 70 is formed symmetrically on the left and right and both sides. A through hole 74 formed so that the anode terminal 14 can be inserted is provided at the center of the fixing jig 70, and a concentric annular convex portion 75 is formed in the vicinity of the outer periphery of the through hole 74. The inside of the annular convex portion 75 is formed in a tapered shape toward the through hole 74. Further, in the fixing jig 70, a space portion 70 c that opens in a T-shape with the upper portion curved along the circumference with the annular convex portion 75 in the vicinity of the frame 70 a where the engagement concave portion 70 b is not formed. Is provided. Further, a part of the frame 70a in the vicinity of the space 70c is provided with an inflating part 70d formed so as to swell slightly outward of the circumference of the fixing jig 70.

  On the other hand, as shown in FIG. 10, a support convex portion 76 is formed in the center opening 64 of the base 58 at a position rotated, for example, 90 ° from the fitting convex portion 64a provided on the side wall. The lower side of the support convex portion 76 is formed flush with the bottom surface of the base 58.

  In the cable connection method of this embodiment, first, as shown in FIG. 10, the fixing jig 70 is attached to the center opening 64 of the base 58. At this time, the fixing jig 70 is placed in the center of the base 58 in a state of being parallel to the center opening 64 in a state where the fitting convex portion 64 a provided on the base 58 and the engaging concave portion 70 b of the fixing jig 70 coincide. Insert into the opening 64. Then, the fixing jig 70 is brought into contact with the support convex portion 76. Next, a tool or the like is inserted into the space portion 70c, the fixing jig 70 is rotated, and the frame 70a is rotated to a position where the frame 70a is positioned and locked between the fitting convex portion 64a and the support convex portion 76. Let

  Next, an adhesive or the like is applied to the bottom surface of the base 58, and the through hole 74 of the fixing jig 70 is inserted into the anode terminal 14 provided on the glass substrate of the image display device 12, as shown in FIG. The base 58 is attached and fixed. Thereafter, a tool or the like is fitted into the space portion 70c, the fixing jig 70 mounted on the base 58 is rotated, the engaging concave portion 70b is aligned with the fitting convex portion 64a, and the fixing jig 72 is removed. Then, as in the above embodiment, the connection of the high voltage cable 16 is completed by attaching the housing 20 through which the high voltage cable 16 is inserted to the base 58.

  According to the cable connecting device and the cable connecting method of this embodiment, the anode terminal 14 is attached to the center opening 64 of the base 58 in a simple and accurate manner with respect to the center opening 64 by the detachable fixing jig 70. It is something that can be done. Further, since the fixing jig 70 is formed of a transparent resin, the positioning can be easily performed by visual observation, and the working efficiency is good.

It is a disassembled perspective view which shows the structure of the cable connection apparatus of 1st embodiment of this invention. It is a perspective view which shows the cable connection apparatus of this embodiment. It is a longitudinal cross-sectional view of the cable connection apparatus of this embodiment. It is a perspective view which shows the modification of the cable connection apparatus of this embodiment. It is a perspective view which shows the cable connection apparatus of 2nd embodiment of this invention. It is a longitudinal cross-sectional view of the cable connection apparatus of this embodiment. It is a perspective view which shows the modification of the housing of the cable connection apparatus of this embodiment. It is the top view (a) which shows the cable connection state of the cable connection apparatus of the modification of this embodiment, and a front view (b). It is the front view (b) which shows the top view (a) which shows the fixing jig of the cable connection apparatus of 3rd embodiment of this invention. It is the perspective view (a) which shows the base and fixing jig of the cable connection apparatus of this embodiment, and the perspective view (b) after fixing jig fitting. It is a longitudinal cross-sectional view which shows the fitting state of the base and fixing jig of the cable connection apparatus of this embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Cable connection apparatus 12 Image display apparatus 14 Anode terminal 16 High voltage cable 16a Core wire 18 Tubular part 18a Insertion hole 18b Through-hole 20 Housing 20a Housing bottom part 21 Uneven part 22 Contact attachment part 24 Push lever 26 Contact 30, 32 Elastic piece

Claims (5)

  A housing to which a high voltage cable connected to an anode terminal provided in an image display device is attached, and a contact that is inserted into the housing and connects the anode terminal and the high voltage cable, and the housing includes the high voltage cable A cylindrical portion through which a cable is inserted; and a contact mounting portion that accommodates the contact, wherein the contact is connected to the first elastic piece connectable to the anode terminal, and to a core wire at the tip of the high-voltage cable. A cable connecting device comprising: a second elastic piece; and a push lever for releasing the connection between the second elastic piece and the core wire attached to the housing.   2. The cable connecting device according to claim 1, wherein a lead holder is attached to the housing so as to cover the tubular portion and is provided with a through hole through which a high voltage cable is inserted.   A base fixed to the image display device around the anode terminal and to which the housing is fixed is provided, and concave and convex portions that can be fitted to each other are provided on the inner side of the bottom surface of the base and the bottom surface of the housing, respectively. The cable connecting device according to claim 1, wherein the housing is configured to be attachable to the housing.   The base is formed with an opening in which the contact mounting portion of the housing is located, and a fixing jig having a through hole into which the anode terminal can be inserted is detachably provided in the opening. The cable connection device according to claim 3. A housing to which a high voltage cable connected to an anode terminal provided in the image display device is attached, and a contact that is inserted into the housing and connects the anode terminal and the high voltage cable are provided, and the housing has the high voltage A cylindrical portion through which a cable is inserted; and a contact mounting portion that accommodates the contact, wherein the contact is connected to the first elastic piece connectable to the anode terminal, and to a core wire at the tip of the high-voltage cable. And a base for fixing the housing to the image display device around the anode terminal, wherein a push lever for releasing the connection between the second elastic piece and the core wire is attached to the housing. The base is formed with an opening in which the contact mounting portion of the housing is located, and the base A fixing jig having a through-hole through which the anode terminal can be inserted is attached to the opening in advance, the base is fixed around the anode terminal, the fixing jig is removed, and the housing is attached to the base. The anode terminal and the first elastic piece are connected to each other, and then the core wire at the tip of the high voltage cable is inserted into the cylindrical portion and connected to the second elastic piece of the contact. Connection method.

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