JPS5844695Y2 - CRT mounting structure in television receivers, etc. - Google Patents

Description

[Detailed description of the invention] This invention relates to the structure of the installation of a cathode ray tube in a television receiver etc. that uses a cathode ray tube as a component of the device.
In particular, the attachment of the cathode ray tube is such that positioning can be performed reliably and easily.

Conventionally, in order to incorporate, for example, a cathode ray tube of a television receiver into a cabinet that constitutes the main body of the device, fixing bolts were installed in several brackets that were positioned and attached to the front frame that constituted a part of the cabinet. Leave it standing.

The fixing bolts are wrapped around the outer periphery of the cathode ray tube body, and the band is provided with at least the number of fixing bolts that correspond to the number of fixing bolts mentioned above. A washer is fitted to the bolt, and the cathode ray tube is supported by the bolt by passing through a screw insertion hole drilled in the tongue piece, and a shield plate is installed to cover the outer periphery of the cathode ray tube body. is supported by the bolt through a screw insertion hole bored at its end.

When the cathode ray tube and shield plate are supported by the fixing bolt and the nut screwed onto the bolt is tightened, the washer will fit into the screw insertion hole drilled in the mounting tongue, and the washer's position will be restricted. In the above installation, the position of the tongue piece relative to the fixing bolt is regulated by the outer circumferential surface that becomes the surface, and furthermore, in the above installation, when tightening with the tongue piece provided, the position of the CRT with the band attached is regulated relative to the fixing bolt. The position is regulated and fixed.

However, the tightening of the plurality of attachments provided on the band 2 to the cathode ray tube main body 1 is limited to the screw insertion hole 4 drilled in the tongue piece 3.
It is difficult to accurately determine the relative positional relationship between the fixing bolts 6 and the fixing bolts 6 installed in each of the plurality of brackets 5.

Therefore, when tightening and fixing the nut 7 screwed onto the fixing bolt 6 as described above, the washer 8 fitted on the bolt 6 does not fit into the screw insertion hole 4.
As shown in FIGS. 1 and 2, there are cases in which the tongue piece 3 is individually fixed with the tongue piece 3 riding on the washer 8.

In this way, the washer 8 does not fit into the screw insertion hole 4 and be sandwiched between the end surface of the bracket 5 and the shield plate 9, and the end surface of the bracket 5 that does not fit into the screw insertion hole 4 is attached to the tongue piece 3. If the cathode ray tube is held between the two, it will be impossible to determine the correct position when installing the cathode ray tube, and a gap will be created due to misalignment between the front of the cathode ray tube and the opening of the bezel that forms part of the front frame. .

Therefore, the present invention has been developed to ensure that the position of the cathode ray tube can be determined easily and reliably. The purpose of mounting the cathode ray tube in such a way that it can be held down securely is to provide structure.

Hereinafter, the present invention will be described with reference to an embodiment shown in the drawings.

In the present invention, as shown in FIG. 3, several brackets 12 are mounted on screws 112a, etc. by positioning them at predetermined positions on a front frame 11 that constitutes a part of a cabinet constituting the equipment body of a television receiver, for example. They are attached by fixing means, and fixing bolts 13 are installed in each of these brackets 12.

The main body 15 of the cathode ray tube 14 installed in the main body of the device is provided with a screw insertion hole 16 that is inserted into the fixing bolt 13 so as to wrap around the outer circumference of the main body 15 of the cathode ray tube 14. A number of tightening bands 18 corresponding to the number of bolts 13 are attached.

In this tightening, the cathode ray tube 14 with the band 18 attached is mounted in a state where it is supported by the fixing bolt 13 by inserting the screw insertion hole 16 drilled in the tongue piece 17 into the fixing bolt 13. will be established.

In this way, the fixing bolt 1 that supported the cathode ray tube 14
3, for mounting, a bulging portion 20 having an outer diameter larger than the diameter of the screw insertion hole 16 formed in the tongue piece 17 and having a through hole 19 through which the fixing bolt 13 is inserted is formed on one side. A washer 21 as shown in FIGS. 4A and 4B formed in the center is fitted.

This washer 21 is fitted onto the fixing bolt 13 so that the bulging portion 20 faces the screw insertion hole 16 of the tongue piece 17.

Further, the fixing bolt 13 is provided with a cathode ray tube main body 1.
A shield plate 22 disposed so as to cover the outer periphery of the shield plate 5 is inserted through a screw insertion hole 24 formed in an end portion 23 of the shield plate 22 and is supported.

As described above, the cathode ray tube 14 is supported, the washer 21 is fitted, and the nut 25 is screwed onto the fixing bolt 13 that supports the shield plate 22. When the nut 25 is tightened, as shown in FIG. The bulge 2 formed on the washer 21
0 enters the screw insertion hole 16 formed in the tongue piece 17 by using the inclined surface of the outer peripheral surface as the entry guide surface 20a.

When the nut 25 is further tightened, the flange portion 26 of the washer 21 will be held between the tongue piece 17 and the end portion 23 of the shield plate 22, and the bulge portion 20 will be attached to the screw of the tongue piece 17. The outer circumferential surface of the base of the bulged portion 20 is tightly fitted into the outer circumferential surface of the end of the screw inserting hole 16 as shown in FIG. Attachment to the service bolt 13 is performed by locating the position.

When the fixing bolt 13 positioned in this way is attached, the tongue piece 17 is attached and the position is determined. Attachment to the service bolt 13 involves locating the position.

The bulging portion 20 of the washer 21 is attached to the tongue piece 17.
As long as the fixing bolt 13 is inserted into the screw insertion hole 16 of
When tightening the nut 25, be sure to use the entry guide surface 20a of the bulged portion 20 as a guide to tighten the nut 25 through the screw insertion hole 16.
penetrates and mates.

Therefore, even if there is a relative positional shift between the screw insertion hole 16 of the tongue piece 17 and the fixing bolt 13, as long as the screw insertion hole 16 is inserted into the fixing bolt 13, the front frame 1
1 opening 11 a end and front surface 14 of cathode ray tube 14
The cathode ray tube 14 can be installed within the main body of the device without leaving a gap between the cathode ray tube 14 and the main body of the device.

The bulging portion 20 of the washer 21 used in the above-described embodiment is formed so that the cross-sectional shape is curved in an arc shape, but the attachment of the tongue piece 17 to the fixing bolt 13 makes the positioning more accurate. 7, the base of the bulge 20 is attached to the flange 2.
It is also possible to use a device in which the positioning surface 31 is formed to stand up perpendicularly to the positioning surface 6.

According to the present invention as described above, the cathode ray tube can be attached to the main body of the device without necessarily having to be positioned at a predetermined position, and the above-mentioned positioning can be easily performed.

[Brief explanation of the drawing]

FIG. 1 is a partial sectional view showing a conventional example, and FIG. 2 is a plan view thereof. FIG. 3 is a sectional view showing an embodiment of the present invention, and FIGS. 4A and 4B show a washer constituting the present invention, with A being a perspective view thereof and B being a sectional view thereof. FIG. 5 is a cross-sectional view showing a state in which the washer is attached and the tongue piece enters the screw insertion hole, and FIG. 6 is a cross-sectional view showing the fitted state. FIG. 7 is a sectional view showing another example of the washer constituting the present invention. 11... Front frame, 12... Bracket, 13... Fixing bolt, 15... Braun tube body, 16... Screw insertion hole , 17...
...Mounting with tongue piece, 18...Tightening with band,
20...Bulging part of washer, 21...
Washer, 22... Shield plate, 25...
...Natsuto.

Claims (1)

[Scope of utility model registration request] The fixing bolt installed on the bracket that is positioned and attached to the front frame etc. that constitutes the main body of the device is attached to the tightening band attached to the outer periphery of the cathode ray tube body. The above-mentioned tightening is done by inserting a circular screw insertion hole drilled into the shield plate and tightening the nut by fixing the band and the shield plate to position and fix the cathode ray tube. A positioning washer having a larger outer diameter is fitted between the shield plate and the mounting tongue piece, and the washer has a bulge having an entry guide surface with an inclined outer periphery on the side facing the screw insertion hole. When tightening the bolts and screws, the flange part disposed between the tongue piece and the shield plate is sometimes formed, and as the nut screwed into the bolt is tightened, the bulge formed on the washer is tightened. The structure of mounting a CRT in a television receiver, etc. is such that the CRT is positioned and fixed by fitting into a screw insertion hole along the above-mentioned intrusion guide surface.