JPS5816362B2 - antenna - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the invention of an antenna telescoping operation mechanism, and the present invention relates to the invention of an antenna telescoping operation mechanism, which enables smooth wire guidance by performing orderly wire guidance in the mechanism for manipulating a group of antenna elements combined in a multi-stage telescoping relationship. The purpose is to achieve the expansion and contraction effect of the rod antenna, to store the wires in an orderly manner, and to obtain a desirable waterproof effect.

2. Description of the Related Art Automatic operation using a motor to extend and retract a rod antenna in which antenna elements are assembled in multiple stages in a telescoping relationship has been known and has been put to practical use in various ways.

In other words, in order to expand and contract the antenna element by driving the motor, a take-up reel is driven by the motor through a required gear mechanism, and the end portion of the wire that is wound or unwound by the take-up reel is used. is connected to the center element (the element located at the top when extended) of the antenna element group, but in the structure conventionally adopted in such a structure, the wire winding groove of the winding reel is is in an open state, and the wire is sequentially wound or unwound into this groove, so the wound wire is not necessarily stable in the winding groove, and especially if it separates from the winding reel. The part of the wire that is guided in the direction of the antenna element group is unstable and cannot take an orderly angular relationship, that is, the middle part of the extruded wire is bent to the side especially when extruding the antenna. It is easy to form, which has the disadvantage that the extrusion effect provided by the take-up reel is greatly impaired and smooth operation cannot be achieved.

In addition, when such a mechanism is used for a vehicle and encounters rain, it is inevitable that rainwater that has adhered to the rod antenna will flow from the rod antenna through the telescopic operation wire and into the operation mechanism. However, the rainwater that has entered the operating mechanism will eventually enter the drive gear portion and other parts of the operating mechanism, resulting in a drawback that its desirable functions will be hindered.

The present invention has been devised after repeated studies in order to eliminate the disadvantages of the conventional products as described above.

That is, the specific embodiment of the present invention shown in the accompanying drawings will be described.The overall structural relationship is as shown in FIG. is engaged with a gear 10 in the case 2, and the gear 10 is adapted to drive the take-up reel 3 via a rolling shaft 9, a clutch plate 12, etc. has a wire winding groove 13 open on one side thereof, and is configured to wind or unwind the wire 7 in this wire winding groove 13, and the wire 7 is provided on one side of the case 2. antenna base tube 15
The antenna elements 16 are guided into the mounting portion 14 of the antenna element 16 and are connected to the center element 16a through the through hole 14a, and are connected to the center element 16a, similar to the previously known antenna elements described above. be.

However, in the present invention, in the structure as described above, an annular intermediate plate 4 as shown in FIG. 5 is attached to the open winding groove 13 of the winding reel 3. This is to close the open winding groove 13, and in addition, inclined notches 5.6 as shown in FIG. An introduction gap for the wire 7 is formed in between, and therefore, the wire led out from the winding groove 13 is guided in the direction of the antenna element group through the inclined notches 5 and 6, and is wound on the winding reel 3. The wire 7 thus held down is held down by the intermediate plate 4 and held in the groove 13 in a stable state.

In addition, the base end of the wire 7 used as described above is attached to the take-up reel 3 as shown in FIG.
The bent portion 17 is inserted into a hole 18 formed in the hole 18 and is fixed thereto.

According to the present invention as described above, the open surface of the wire winding groove 13 on the winding reel 3 is closed by the intermediate plate 4, so that the wire 7 wound into the winding groove 13 is always The wire 7 is held in a stable state in the groove 13 and does not protrude at all, and the wire 7 in this stable state is sequentially pulled out at the inclined notches 5 and 6 to operate the antenna or to be reeled. 3, the wire can be wound in an orderly manner at all times, thereby creating an effective wire pushing force through the rotation of the take-up reel, allowing for smooth expansion and contraction of the rod antenna. Even if rainwater, etc. that has entered the case 2 through the wire can reach this take-up reel section, it will be effectively prevented by the middle plate 4 from penetrating further into the gear 10 section. It has the effect of effectively avoiding the cause of functional deterioration due to intruding rainwater, etc., and in any case, it is possible to ensure appropriate expansion and contraction operation of the Rondo antenna, so this is a highly effective explanation from an industrial perspective. .

In addition, if the intermediate plate 4 in which the inclined notches 5 and 6 are formed as described above is used, as shown in FIG. Even when guiding a part, a preferable guiding action can be obtained because the position is specified.

[Brief explanation of the drawing]

The drawings show embodiments of the present invention, and FIG. 1 is a partially cutaway front view showing the general structural relationship of the device according to the present invention, and FIG. 2 is similar to FIG. 1. 3 is a front view of the intermediate plate attached to the take-up reel, FIG. 4 is a side view thereof, and FIG. 5 is a slope view of the intermediate plate. However, in these drawings, 2 is a case, 3 is a take-up reel, 4 is a middle plate, 5 and 6 are inclined notches, T is a wire, and 1
3 is a wire winding groove, and 16 and 16a are antenna elements.

Claims (1)

[Claims] 1. A spiral wire winding groove is formed on a winding reel for operating a group of telescopic antenna elements arranged in stages, and an intermediate plate is attached to the open surface of the wire winding groove of the winding reel. . An antenna expansion/contraction operation mechanism, wherein an inclined notch is formed in the middle plate to lead out the wire in the direction of the antenna element group.