JPH0441585Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a termination plug for CATV equipment that terminates empty connector terminals of a branch amplifier with a dummy resistor.

[Prior Art] Conventionally, in branch amplifiers used in CATV systems, empty connector terminals are sometimes provided as branch terminals to which coaxial cables are not actually connected, in consideration of expansion after installation. If such empty connector terminals are left as they are, reflection loss will occur, so a termination plug with a built-in 75 ohm dummy resistor is connected to terminate them.

FIG. 4 is a sectional view showing a conventional terminal plug, in which a resistor housing part 3 is formed by opening on the threaded part 2 side of the plug main body 1, and the resistor housing part 3 is fitted into the bottom of the resistor housing part 3 from the outside. A through hole 4 is provided. Pass one of the lead wires of the current cut capacitor 5 through this through hole 4 and solder it on the outside, then solder the lead of a 75 ohm dummy resistor 6 to the other lead of the capacitor 5, and then solder the lead of a 75 ohm dummy resistor 6 to the other lead of the capacitor 5. Solder the lead to connector pin 7, and connect this connector pin 7.
is fitted and fixed in the resistance storage part 3 by a Teflon member 8. Furthermore, a seal 9 is adhered to the soldered portion outside the through hole 4 to improve its appearance.

[Problems to be solved by the invention] However, with such conventional terminal plugs, when screwing and fixing the terminal plug to a vacant connector terminal, the connector pin 7 does not fit into the connector hole of the vacant connector. Because it is rotated while it is fitted,
Only the connector body 1 rotates without the connector pin 7 turning, and as a result, the leads of the dummy resistor 6 and capacitor 5 built into the resistor housing 3 may be screwed off, and even if the leads are screwed off, they cannot be removed from the outside. Since this is not known, there was a problem in that even if a termination plug was connected, the termination could not be completed with a dummy resistor.

[Means for Solving the Problems] The present invention has been made in view of the above-mentioned conventional problems, and aims to ensure the termination state of the dummy resistor even when screwed into an empty connector terminal. The purpose is to provide a highly reliable terminal connector for CATV equipment.

In order to achieve this purpose, in the present invention, in the termination plug of CATV equipment, which terminates the branch vacant connector terminal of the branch amplifier with a dummy resistor,
A resistor housing is formed by opening on the threaded side of the plug body, and a disc-shaped capacitor, a leadless resistor, and a connector pin are soldered to each other within this resistor housing with a conductive elastic member in between. It is designed to be fitted and fixed in this state.

[Function] With the termination plug of the present invention having such a configuration, when connecting the termination plug to an empty connector terminal by screwing, even if the connector pin does not turn, the disc-shaped capacitor is conductive between the connector pins. Because they are only in sliding contact with the connector body through the elastic member, the soldering side of the disc-shaped capacitor, leadless resistor, and connector pin hardly rotates even when rotated by the connector body, and the solder It is possible to reliably prevent a situation where the attachment is threaded and the dummy resistor becomes poorly connected.

[Embodiment] FIG. 1 is an exploded view showing an embodiment of the present invention.

In FIG. 1, reference numeral 1 denotes a plug body, which is composed of a nut part 1a and a threaded part 2, and is opened on the threaded part 2 side to form a resistance storage part 3.
It becomes a stepped hole.

As shown on the right side, a conductive rubber 9 as a conductive elastic member and a disc-shaped capacitor 1 are attached to the resistor storage part 3 of the plug body 1.
0, a leadless resistor (dummy resistor) 11 having no lead terminal, and a connector pin 7 are incorporated.

Here, the disc-shaped capacitor 10 has a structure in which electrode surfaces are provided on both sides with a dielectric material in between, and a leadless resistor 11 is placed on the right side of the disc-shaped capacitor 10.
One electrode is fixed by soldering. Further, the bottom of the connector pin 7 is similarly soldered to the other electrode of the leadless resistor 11. Therefore,
By soldering, the disc-shaped capacitor 10, the leadless resistor 11, and the connector pin 7 have an integral structure.

In addition, in order to fit and fix the disc-shaped capacitor 10, leadless resistor 11, and connector pin 7, which are integrated into the resistor storage portion 3 of the plug body 1 by soldering, there is a position that covers the outside of the leadless resistor 11. Teflon members 8a and 8b are provided at positions to be fitted into the stepped portions on the distal end side of the connector pins 7, respectively.

FIG. 2 shows an assembled state of the terminal plug of the present invention based on the exploded view of FIG. 1.

As is clear from FIG. 2, the Teflon member 8a,
By fitting 8b into the resistor housing 3, the disc-shaped capacitor 10, leadless resistor 11, and connector pin 7, which are integrated by soldering with the conductive rubber 9 in between, are assembled.

Incidentally, as the leadless resistor 11, a Melf resistor used as a chip component or the like can be used.

Next, the operation of the above embodiment will be explained.

In the assembled state of the termination plug of the present invention shown in Fig. 2, the termination plug of the present invention is screwed into the connector screw hole of the empty connector terminal exposed outside the case of a branch amplifier and fixed. but,
At this time, the connector pin 7 is fitted into the connector hole of the connector terminal and becomes difficult to rotate. Therefore, only the housing main body 1 side is screwed in.

When the main body 1 side of the housing is rotated without the connector pin 7 moving, the leadless resistor 11 and the disc-shaped capacitor 10 are sequentially integrated with the connector pin 7 by soldering, and the disc-shaped capacitor 10 is in sliding contact with the bottom of the resistor housing 3 with conductive rubber 9 sandwiched between them, and even if the housing body 1 is moved with the connector pin 7 side fixed, there will be no contact between the disc-shaped capacitor 10 and the conductive rubber 9. The conductive rubber 9 and the bottom of the resistor housing 3 rotate in sliding contact with each other. Therefore, even if only the housing body 1 is rotated, the disc-shaped capacitor 10 and the leadless resistor 1 are integrated by soldering.
1 and the connector pin 7 are weak, and the soldering between the connector pin 7 and the leadless resistor 11 or the soldering between the leadless resistor 11 and the disc-shaped capacitor 10 will not be screwed off. In addition, the soldering does not depend on the lead terminals, and since the leadless resistor 11 is fixed to the connector pin 7 and the disc-shaped capacitor 10 with a sufficiently large area on both sides, it is sufficiently strong against the external rotational force. Rigidity is obtained, and the soldered portion will not be threaded due to rotation of the housing body 1 side.

FIG. 3 is an explanatory diagram showing another embodiment of the conductive elastic member used in the present invention, and in the embodiments of FIGS. 1 and 2, conductive rubber 9 is used as the conductive elastic member. However, as shown in FIG. 3, a conductive elastic member 12 formed by processing a metal plate into a cap shape may also be used. That is, the conductive elastic member 12 has a cap-shaped upper side that contacts the disc-shaped capacitor 10, and has a through hole 13 formed therein to reduce sliding resistance. The portion that contacts the bottom of the resistor storage portion 3 is formed of a plurality of arm portions 14 that extend at predetermined intervals and are bent at their tips, and the formation of the arm portions 14 generates an elastic deformation force in the axial direction. , and by dividing the arm portion 14 into a plurality of parts, the structure is such that the contact resistance behind the housing body 1 can be reduced.

[Effect of the invention] As explained above, according to the invention, a resistor storage part is formed by opening on the screw side of the plug body, and a conductive elastic member is inserted into the resistance storage part in between. Since the disc-shaped capacitor, leadless resistor, and connector pin are soldered together and then fitted and fixed, when screwing and fixing the termination plug to the empty connector terminal, the connector pin side does not move and the plug is fixed. Even if the main body side turns, the integrated disk-shaped capacitor, leadless resistor, and soldered part of the connector pin are surely prevented from being screwed off and the dummy resistor cannot be connected properly. A highly reliable terminal plug can be realized.

[Brief explanation of the drawing]

Fig. 1 is an exploded view showing an embodiment of the present invention; Fig. 2 is a sectional view showing the assembled state of Fig. 1;
FIG. 3 is an explanatory view showing another embodiment of the conductive elastic body used in the present invention; FIG. 4 is a sectional view showing a conventional example. DESCRIPTION OF SYMBOLS 1... Junction main body, 2... Screw part, 3... Resistor storage part, 7... Connector pin, 8a, 8b... Teflon member, 9... Conductive rubber, 10... Disc-shaped capacitor, 11... ...Leadless resistor, 12...
Conductive elastic body, 13...Through hole, 14...Arm portion.

Claims (1)

[Scope of Claim for Utility Model Registration] In the termination connector of CATV equipment, which terminates the branch vacant connector terminal of a branch amplifier with a dummy resistor, a resistor storage part is formed by opening on the threaded side of the connector body, A terminal plug for a CATV device, characterized in that a disc-shaped capacitor, a leadless resistor, and a connecting pin are fitted and fixed in a soldered state to each other in the resistor storage part with a conductive elastic member interposed therebetween.