JPH0753291Y2 - Feeder holding mechanism in TV antenna - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention mainly relates to a feeder holding mechanism for an indoor TV antenna.

[Conventional technology]

Since this type of television antenna is arranged indoors, the feeder may be pulled by mistake, and as a result, when the feeder comes off from the feeder connection portion in the case, no signal is sent to the television receiver. For this reason, conventionally, as shown in FIG. 5, it has been proposed that a columnar projection 32 extending in the opening direction of the case is integrally provided in the case 31, and a hole 34 to be fitted into the columnar projection 32 is formed in the feeder 33. ing. However, in this case, if the feeder 33 fitted in the columnar protrusion 32 is strongly pulled outward, the columnar protrusion 32 may tilt toward the pulling side and the feeder 33 may fall out from the columnar protrusion 32. A TV antenna disclosed in Japanese Utility Model Publication No. 61-17610 is an improved version of this. In this device, the tip end of the columnar protrusion 32 in which the feeder 33 is fitted is fitted into a through hole 36 provided in a cover 35 attached to the case 31 as shown by an imaginary line. For this reason,
Since the columnar protrusion 32 is locked by the cover 35 when the columnar protrusion 32 is tilted by the external force acting on the feeder 33, the feeder 33 does not fall off from the cover 35.

[Problems to be solved by the invention]

However, this conventional technique requires a through hole 36 for inserting the columnar protrusion 32 in the cover 35, and if the through hole 36 is not properly drilled at a predetermined position, the columnar protrusion 32 and the through hole 36 will be formed. The case 31 and the cover 35 cannot be fitted together at the fitting position, and conversely, the columnar protrusion 32 cannot be inserted into the through hole 36 at the position where the case 31 and the cover 35 are fitted together. Further, in this method, since there is no means for preventing the contact between the feeder 33 and the cover 35, when the cover 35 is made of metal, there is a disadvantage that the electrical characteristics of the feeder 33 are deteriorated due to the contact with the cover 35.

The present invention has been made in view of the above point, and an object thereof is to provide an inexpensive feeder holding mechanism capable of preventing the feeder from falling off from the pin without restraining the pin inserted into the feeder with a cover or the like. To do.

[Means for solving problems]

The construction of the present invention for achieving this object is shown in FIGS.
It will be described with reference to the drawings.

The antenna elements 3 and 4 are attached to the case 1 having a one-sided opening, and a feeder connection portion is provided in the case 1. The tip portion is connected to the feeder connection portion at the bottom of the case 1 so that the middle portion is a groove 9 on the side wall of the case 1. In a television antenna in which a pin for retaining the feeder 5 fitted to the base is integrally erected toward the opening, and the opening of the case 1 is covered with the cover 2, the tip of the pin is opposite to the direction in which the feeder is pulled out. It is characterized in that a locking step portion 8 having a lower surface substantially perpendicular to the pin axis is provided on the side, and a through hole 7 through which the locking step portion 8 is inserted is formed in the feeder 5.

[Action]

The feeder 5 whose tip is connected to the feeder connecting portion is passed through the locking stepped portion 8 of the pin 6 through the through hole 7 and then fitted into the groove 9 on the side wall of the case 1 for wiring, so that the feeder 5 locks the pin 6. Since it is locked by the lower surface of the stepped portion 8 and its rising is limited, it does not come into contact with the cover 2. In addition, by pulling the feeder 5 strongly in the feeder pull-out direction, the pin 6
Even if the sheet is tilted in the pulling direction, the feeder 5
Since the upper surface of the feeder is hooked, the feeder 5 does not come out of the pin 6. Therefore, the connection state between the tip of the feeder 5 and the feeder connecting portion is not damaged.

[Embodiment] An embodiment of the present invention will be described with reference to the drawings. 1 to 3, 1 is a case having a one-sided opening, 2 is a cover for covering the opening of the case 1, 3 is a VHF antenna element, 4
Is a UHF antenna element, 5 is a feeder whose one end is connected to a feeder connection portion (not shown) of the internal electronic circuit of the case 1 and the other end is pulled out of the case 1, and 6 is a case bottom portion in the feeder withdrawing direction The pin is formed integrally with the case 1 at a location, is erected toward the opening side, and has a projecting locking step portion 8 whose lower surface is substantially perpendicular to the pin axis at the tip portion on the side opposite to the feeder withdrawal direction. .

In the feeder 5, one end is connected to the feeder connecting portion and the connecting side is slackened to some extent (a state in which the pin 6 is slightly slack even if the pin 6 is tilted to the maximum withdrawal direction), and the locking step portion of the pin 6 The through holes 7 are formed so that they can be passed through. Feeder 5 with one end connected to the feeder connection
After passing through the locking step portion 8 of the pin 6 through the through hole 7 and fitted into the pin 6, the other end side is pulled out through the feeder pull-out groove 9 formed in the side wall of the case 1.

The locking step portion 8 of the pin 6 is tapered as shown in FIG.
Further, as shown in FIG. 4, the tip portion including the locking step portion 8 of the pin 6 may not have a circular cross section and each upper surface portion may be rounded.
Further, the tip of the pin 6 is made into a sharp point, and the resin film portion between the two wires of the feeder 5 is pressed into this to form a through hole so that the pin 6 can be inserted until beyond the locking step portion 8. Good.

[Effect of device]

As described above, according to the present invention, even if the feeder passed through the locking step portion of the pin is pulled in the feeder withdrawal direction and the pin is inclined, the feeder is stopped on the lower surface of the locking step portion. As compared with the conventional product in which the tip of the pin is restrained by the cover, there is an effect that the connection state between the tip of the feeder and the feeder connecting portion can be maintained by an inexpensive means. Further, since the feeder is cut off from the contact with the cover by the locking step portion of the pin, the electric characteristics of the feeder are not deteriorated even if the cover is made of metal.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention, FIG. 2 is a perspective view of an indoor TV antenna in which the present invention is implemented, and FIGS.
FIG. 5 is a sectional view of an embodiment of the present invention, and FIG. 5 is a sectional view of a conventional product. 1 ... Case, 2 ... Cover, 3,4 ... Antenna element,
5 ... Feeder, 6 ... Pin, 7 ... Through hole, 8 ... Lock step, 9 ... Groove.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Bibliography Sho 61-17610 (JP, Y2) Shoji 56-30244 (JP, Y2) Shoko 60-24173 (JP, Y2)

Claims (1)

[Scope of utility model registration request] 1. A feeder in which an antenna element is mounted in a case having one opening and a feeder connecting portion is provided in the case, a tip is connected to the feeder connecting portion at the bottom of the case, and the middle is fitted in a groove of a side wall of the case. In the TV antenna in which the pin that holds the pin is installed upright integrally toward the opening and the opening of the case is covered with a cover, the lower surface of the tip of the pin is opposite to the feeder pull-out direction and the pin axis is A feeder holding mechanism for a television antenna, characterized in that a locking step portion that extends substantially at a right angle is provided in a protruding manner, and a through hole that allows the locking step portion to pass through is formed in the feeder.