JPH0516791Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Technical field] The present invention relates to a television connector.

[Background Art] This type of TV connector is integrated with a mounting frame, so it is not possible to use a standardized mounting frame that allows wiring devices to be detachably attached. It was hot. As a result, when two units are installed in a switch box for one unit or in a mounting frame with other wiring devices, each configuration must have different specifications, which makes manufacturing management troublesome. There was a problem.

In addition, there are devices that are integrated into one mounting frame with other wiring devices (see Utility Model Application No. 56-105962); When devices are arranged vertically, the coaxial cable is pulled out from the top or bottom surface, so the coaxial cable is relatively hard to bend.
Due to the limited space on the back side of the mounting frame, it is difficult to route the wiring so that it does not get in the way of other wiring devices.
There was a problem that the construction work was troublesome.

[Purpose of the invention] The present invention was made in view of the above-mentioned problems, and its purpose is to enable it to be removably attached to a mounting frame standardized for wiring devices. To provide a television connector that facilitates coaxial cable connection and routing work.

[Disclosure of the invention] The invention will be explained below with reference to examples. 1 to 8 are drawings showing an embodiment, and 1 is a cover made of a synthetic resin molded product made of thermoplastic resin, thermosetting resin, etc., which has insulation properties against high frequencies of 5 to 800 MHz. A protruding base 1a is formed on the upper surface of the cover 1, and in the center of the protruding base 1a, as shown in FIG. A recess 4 is provided in which a cylindrical projection 3 into which the body 2 is fitted projects from the inner bottom. The cover 1 has a dimension W in the direction of both ends set to be 1.5 times the unit dimension, and a width dimension T in the direction of both sides of the protruding base 1a is set so as to correspond to the width of the opening at both ends of the opening of the mounting frame. The unit dimensions here refer to the standardized mounting frame (JIS C-
8303, C-8304 for large square boss) maximum 3
This refers to the mounting dimensions for the mounting frame of the wiring equipment that is used continuously. In the figure, reference numeral 5a denotes a shield case divided body.The shield case divided body 5a has a center piece that is exactly the same size as the bottom surface of the cover 1, and the cover 1 is placed on the top surface of the center piece. Reference numeral 6 denotes the lower end portion of the cylindrical protrusion 3 that projects into the recess 4 as described above by passing the narrow diameter portion of the lower end through a hole (not shown) provided at the bottom of the recess 4 of the cover 1. This is a hole for inserting the. And this hole 6
Holes 10, 10 are provided at both ends of the cylindrical electrode body 2, through which tongue pieces 7a, 7a extending from both lower ends of the cylindrical electrode body 2 are inserted. After the tongues 7a, 7a are inserted through the holes 10, 10, their tips are connected to the printed circuit board 8 inside the shield case 5 and fixed by soldering.
9 is a split body 5a for shielding the coaxial cable.
This is a holding metal fitting for pressing and fixing to the outer surface of one side of the coaxial cable. The horizontal pieces at both ends are tightened and fixed to the side surfaces of the shield case divided body 5a by tightening screws 11, 11. The coaxial cable is inserted in an oblique direction, and a terminal fitting 12 for connecting the core wire of the coaxial cable is provided on the central axis. This terminal fitting 12 is attached to the fourth side of the shield case divided body 5a.
As shown in the figure, it is attached to a terminal case 14 made of an insulating material that is fitted into an open window hole 13, and is composed of a terminal plate 15, a tightening screw 16, and a tightening nut 17. Reference numeral 18 denotes an engaging claw that engages with the opening edge of the window hole 13 provided on the side of the terminal case 14. Then, the core wire of the coaxial cable, whose shielded wire portion is pressed by the presser metal fitting 9, is inserted through the notch 19, which is a part of the peripheral wall 14a of the terminal case 14, and the terminal metal fitting 12 inside the terminal case 14 is inserted. The core wire is inserted between the terminal plate 15 and the tightening nut 17, and the core wire is connected and fixed by tightening the tightening screw 16. The printed circuit board 8 is supported by the shield case divided body 5a by placing both ends on cut and raised pieces 20 cut and raised on both sides of the center of the back side of both side pieces of the shield case divided body 5a, Insert the signal connecting pin on the plug side into the mounting hole 21 provided in the center, and insert the lower end of the outlet fitting 22 that has passed through the cylindrical protrusion 3, and solder it to the signal circuit pattern on the back side. , the receiving blade metal fitting 22 is fixed together with the electrical connection, and is electrically connected to the terminal metal fitting 12 connected to the pattern. It should be noted that the cylindrical electrode body 2 is soldered and fixed to the ground circuit of the printed circuit board 8 to be electrically connected thereto, and also to a part of the shield case 5, and a presser metal fitting is used to fix the shield wire of the coaxial cable. Connect electrically to 9. In the figure, 5b denotes a shield case divided body which constitutes the shield case 5a by being combined with the shield case divided body 5a shown in FIG. 5. As shown in FIG. 6, this shield case divided body 5b has both sides. and the upper end surface are open, and the shield case split body 5a
From below, the lower end surface and both end surfaces of the shield case divided body 5a are combined and combined to form the shield case 5. 23,2 in the figure
3... are engaging protrusions provided on both end edges of both side pieces of the shield case divided body 5a, and these engaging protrusions utilize tapers provided on the lower side to engage both side edges of both end pieces of the shield case divided body 5b. Notches 24, 24 provided in
The shield case divided bodies 5a,
5b. As shown in FIG. The locking protrusions 26, 26, . In this case, since the dimension W in the direction of both ends of the cover 1 and the shield case 5 is formed to be exactly 1.5 times the unit dimension, it is possible to connect two TV connectors A of the present invention or use another wiring device, such as an AC outlet. It can be installed in series with B.

[Effects of the invention] As described above, the present invention provides the terminal fitting to which the core wire of the coaxial cable is connected and the holding fitting to press and fix the shield wire portion of the coaxial cable on the side of the shield case, and also provides the terminal fitting and Since the coaxial cable held by the holding bracket has a structure in which the pull-out direction is inclined with respect to the front surface of the cover, it is possible to install the coaxial cable while ensuring the distance required for connecting the coaxial cable between the holding fitting and the terminal fitting. It is possible to reduce the mounting dimensions of the wiring devices in the arrangement direction (left-right direction in FIG. 1) with respect to the frame.

On the other hand, coaxial cables are usually introduced into switchboxes from the direction in which the wiring devices are arranged relative to the mounting frame, so coaxial cables that are relatively hard to bend (for example, 5C2V), which are commonly used for TV connections, are used. When connecting, it is better to minimize the angle that the coaxial cable makes with the front of the cover in the direction in which it is pulled out, as this will reduce the amount of bending of the coaxial cable inside the switchbox, making it fit better and making installation easier. . In other words, the larger the dimensions of the wiring devices in the arrangement direction, the smaller the angle that the coaxial cable pull-out direction makes with the front surface of the cover, which is advantageous in terms of workability.

The maximum number of standardized mounting frames that can be used to install wiring devices of a unit size is three, so if you want to attach two or more wiring devices to this mounting frame in series, the wiring devices must be 1.5 times the unit size or less. There must be. The dimension that satisfies this constraint and facilitates construction is 1.5 times the unit dimension.In this invention, by setting the dimension to 1.5 of the unit dimension, up to two pieces can be attached to one mounting frame. At the same time, the bending of the coaxial cable is reduced, making installation easier.

In addition, the mounting frame can be installed in parallel with other wiring devices such as outlets and switches that have a unit size or 1.5 times the unit size, so two TV connectors can be installed in one place at the same time. It has the advantage of providing a high degree of freedom in combinations depending on the purpose, such as installing a TV connector or installing a TV connector together with other wiring devices.

Furthermore, since a pair of locking protrusions are provided on each side of the cover that are removably connected to the mounting frame, it can be attached to the mounting frame in combination with ready-made wiring devices. By using a ready-made mounting frame without using a mounting frame, it becomes possible to use two TV connectors in succession or to use them in combination with an outlet. As a result, parts can be shared and costs can be reduced while combining them to suit various usage patterns at the site.

[Brief explanation of the drawing]

Fig. 1 is a side view of one embodiment of the present invention, Fig. 2 is a cross-sectional view of the same, Fig. 3 a, b, and c are top views of the cylindrical electrode body of the above, a partially cutaway side view, and a cylindrical 4 is a sectional view of the terminal case portion of the electrode body, FIG. 5 is a side view and a top view of the divided body for the shield case, Front view, Figures 6a, b, and c are side views, top views, and front views of another divided body for the shield case, and Figures 7a and b are front views, top views, and Figure 8 of the same cover. The figure is a usage explanatory diagram of the same as above. 1 is a cover, 1a is a protruding base, 5 is a shield case, 5a and 5b are shield case divisions, 9 is a holding metal fitting, 12 is a terminal metal fitting, and 26 is a locking protrusion.

Claims (1)

[Scope of utility model registration request] A shield case is formed into a substantially rectangular parallelepiped by combining two metal shield case divisions that can be bent into a U-shape, and a protruding base with an outlet in the center of the top surface is integrally formed to shield the bottom part. For TV connectors consisting of a cover placed on the top of the case, the unit dimension is the installation dimension of up to three wiring devices that are used in succession for a standardized installation frame, and A pair of removably coupled locking protrusions are provided on each side of the cover, and the dimensions of the cover and shield case are adjusted to the above unit dimensions.
1.5 times, a terminal fitting to which the core wire of the coaxial cable is connected, and a holding fitting to hold and fix the shielded wire part of the coaxial cable are provided on the side of the shield case, and the coaxial cable held by the terminal fitting and holding fitting is provided on the side of the shield case. A TV connector in which the cable exit direction is inclined with respect to the front of the cover.