JPH047986A - Earth connecting device for cathode ray tube display device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a ground connection device for television receivers, cathode ray tube display monitors, and the like.

BACKGROUND OF THE INVENTION In recent years, display devices using cathode ray tubes, particularly cathode ray tube display monitors used as computer terminal equipment, have been moving toward higher functionality and higher density display. In addition, grounding is said to play a very important role as a measure against electromagnetic noise emitted by equipment and external noise that affects equipment. When connecting to a ground, if the ground wire becomes long, radiated noise will enter the ground wire. It is common practice to install the required number of ground wires in the required locations and as short as possible.

An example of a conventional ground connection device will be described below with reference to the drawings.

4 and 5 are a plan view and a side sectional view of a conventional earth connection device. In FIG. 4, 1 is a synthetic resin cabinet, 2 is a cathode ray tube, and 3 is a mounting bracket for the cathode ray tube 2 located at the four corners. 8 is a screw fixing the right side shield fitting 11, 12 is a grounding fitting, 13 is a screw fixing the cathode ray tube 2 and the grounding fitting 12, 14 is a screw fixing the grounding fitting 12 to the shielding fitting 11, and 15 is a screw The left shield fitting has the same mounting configuration as the right shield fitting 11.

The operation of the ground connection device configured as described above will be described below.

First, the cathode ray tube 2 is inserted into the cabinet 1, and the left and right shield fittings 11 and 16 are screwed in with the screws 8, respectively. Next, screw the grounding fittings 12 onto the left and right shield fittings 11 and 15 using the screws 14, and then align the other ends of the grounding fittings 12 with the mounting fittings 3 of the cathode ray tube 2 using the fixing screws 13, and then connect the shielding fittings to the shield fittings. 11 and the cathode ray tube mounting bracket 3 were connected to ground.

Problems to be Solved by the Invention However, with the above configuration, the length of the ground connection line is long, which increases the resistance value at each connection point, and at the same time increases the number of parts and man-hours. was. Furthermore, the axial variation in the mounting fitting 3 of the cathode ray tube was large, making it impossible to integrate the shield fitting 11 and the grounding fitting 12.

In view of the above-mentioned problems, the present invention realizes a ground connection with the shortest length and reduces the resistance value associated therewith.
An object of the present invention is to provide a grounding device that can reduce the number of parts and have a structure that can easily absorb variations in the axial height of cathode ray tube mounting fittings.

Means for Solving the Problems In order to solve the above problems, the earth connection device of the present invention has the following features:
A notch or groove is provided near the connection fixing hole so that both ends of the metal piece such as the shield fitting can be deformed relatively easily.
It has a structure that allows it to be directly fixed to the object to be connected without using relay parts such as lead wires and grounding fittings.

Effect: With this configuration, the connection and fixing portion of the shield fitting is set in the shape of a notch or groove that can be deformed to accommodate variations within a certain range than the notch or groove portion.

Embodiment Hereinafter, a ground connection device for a CRT monitor display according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a front view of a ground connection device in one embodiment of the present invention. In Figure 1, 1 is the cabinet, 2 is the cathode ray tube, 3 is the cathode ray tube mounting bracket, 8 is the right shield fitting fixing screw, and the above is the same as the configuration in Figures 4 and 6. 04 is the right side. The shield fittings 5 are abbreviated ears provided at both upper and lower ends of the right shield fitting 4, and the holes thereof are aligned with the mounting fitting 3 of the cathode ray tube 2. Reference numeral 6 denotes a notch provided in the corner of an abbreviated shape at one end of the shield fitting 4, and the shape is easily deformable to absorb variations in the axial direction of the mounting fitting 3 of the cathode ray tube.1 Mechanical structure It's Nishide. Reference numeral 7 denotes a notch provided at the other end, and its function is the same as that of the notch 6 described above. The dimensions of this shape are set appropriately depending on the shape of the shield fitting, and the dimensions are set such that variations in the mounting fitting 3 of the cathode ray tube can be easily deformed and absorbed on the shield fitting side. 9 is a screw that fixes the cathode ray tube and the shield fitting 4,
It also has the ability to connect to each other. Reference numeral 10 denotes a left shield fitting whose mounting configuration is the same as that of the right shield fitting 4.

FIG. 2 is a side sectional view of a ground connection device in one embodiment of the present invention.

The operation of the earth connection device configured as described above will be explained below with reference to FIGS. 1 and 2. First, the cathode ray tube 2 is inserted into the cabinet 1, and the left and right shield fittings 4 and 10 are screwed in with the screws 8, respectively. Next, the cathode ray tube 2 and the right shield fitting 4 are fixed in alignment with the fixing screws 9. At this time, the attachment fitting 3 of the cathode ray tube and the right shield fitting 4 are press-connected by the fixing screw 9. Further, variations in the axial direction of the mounting fitting 3 of the cathode ray tube are deformed and absorbed by the respective variations through the notches 6 and grooves 7 provided at both ends of the shield fitting 40, and the shield fitting 40 is fixed.

As described above, according to this embodiment, by providing notches or grooves at both ends of the shield metal fitting and creating a structure that can be easily deformed, the shield metal fitting and the cathode ray tube mounting metal fitting can be directly connected to the ground, thereby preventing noise. etc. can be implemented efficiently.

Effects of the Invention According to the present invention, by providing a structure such as a cut groove that makes it easy to deform both ends of a metal plate, it is possible to absorb dimensional variations on the side to which it is attached, and to directly connect it to the required location as quickly as possible without using another object such as a grounding fitting. It can be connected inexpensively and reliably over long distances, and has great practical effects.

[Brief explanation of drawings]

FIG. 1 is a front view of a ground connection device according to an embodiment of the present invention, FIG. 2 is a side view of FIG. 1, FIG. 3 is a front view of a conventional ground connection device, and FIG. FIG. 4 is a side sectional view of FIG. 3; 2...Cathode ray tube, 3...Cathode ray tube mounting bracket, 4...Right shield bracket, 5...
...Earth of shield metal fitting, 6...Notch of shield metal fitting, 7...Notch of shield metal fitting, 8...
...screw, 9...screw, 12...ground fitting, 13...screw, 14...screw. Name of agent: Patent attorney Shigetaka Awano and one other person
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Claims (1)

[Claims] Approximately L-shaped portions are formed at both ends of the conductive metal plate, and this approximately L-shaped portion is formed at both ends of the conductive metal plate.
A notch or groove is provided at the corner of the L-shaped portion, a hole is bored at the tip of the approximately L-shaped portion, and the conductive metal plate and the cathode ray tube are connected through the hole. A ground connection device for a cathode ray tube display device, characterized by: