JPH10122231A - Connection means and rod antenna provided with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connection means between members the rotary part of which is not deformed or broken due to an excessive stress applied to it and a rod antenna which makes use of such connection means. SOLUTION: In a rod antenna which comprises a rotary bearing fitting 2, a rotary fitting 3 which is so provided as to forwardly and backwardly rotate about a first rotational axis 14 on the rotary bearing fitting 2 and a rod 6 which is oriented in the orthogonal direction of the first rotation axis of the rotary fitting 3 and so provided as to forwardly and backwardly rotate about a second rotational axis 16 which is so provided as not to intersect the first rotational axis 14, and has such structure that the rod can tilt and topple on the rotary bearing fitting 2, force is applied in an optional tilting and toppling direction of the rod 6 to let rotation moment act relative to the first rotational axis 14 so that the rotary fitting is rotated to assure a smooth tilting and toppling. Further, a connection means having such form is not to be limited to a rod antenna only, but may also be applied to a connection structure having a similar function.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rod antenna which can be used for a radio or a portable television, and a connecting means which can be effectively used for such a rod antenna.

[0002]

2. Description of the Related Art A conventional technique will be described with reference to FIGS. FIG. 3 is a diagram showing an example of a rod antenna according to the related art, wherein a front view is shown in (A) and a side view is shown in (B). In the figure, 1 is a guide fitting, 2 is a rotating bearing fitting, 3 is a rotating fitting, 4 is a small screw, 5 is a base fitting, 6, 7
Is a rod (pole), 8 is a decorative ball, and 9 is a screw hole.
The structure of this rod antenna is known, but briefly, the guide fitting 1 is made of brass,
It has the function of transmitting the radio waves of a television or radio received by a multi-stage rod including a to an electric circuit inside a device equipped with a rod antenna. In this guide fitting 1,
The rotating bearing 2 is connected by caulking.

Although not shown, one end of the rotating metal fitting 3 is inserted into the inside of the rotating bearing metal fitting 2, and is connected to the rotating bearing metal fitting 2 so that the rotating metal fitting 3 is rotatable in the normal and reverse directions. The other end of the rotating metal fitting 3 is sandwiched by a base metal fitting 5, and the rotating metal fitting 3 and the base metal fitting 5 are connected by a small screw 4. Alternatively, it is configured to be refractible in the direction of arrow B.

FIG. 4 is a diagram showing an example in which the conventional rod antenna shown in FIG. 3 is attached to a housing 10 of a liquid crystal television, wherein a front view is shown in (A) and a side view is shown in (B). is there. In the figure, 10 is a television housing, 11 is a small screw, 12 is a lead wire, 13 is a housing hole, and other parts that perform the same operations as in FIG. 3 are denoted by the same reference numerals as in FIG.

[0005] The guide fitting 1 and the rotating bearing fitting 2 are installed inside a housing 10 of the television, one end of the rotating bearing fitting 2 is held by a casing hole 13, and the guide fitting 1 is fixed to the housing 10 by small screws 11. ing. A lead wire 12 is connected to the guide fitting 1, and the lead wire 12 is connected to an electric circuit (not shown).

[0006] The signal received by the antenna through such a path is transmitted to an electric circuit inside the housing 10, processed by the electric circuit, and displayed as an image on a screen of a liquid crystal television, for example. Since the sharpness of the image on this screen greatly depends on the state of the received radio waves, the operation of adjusting the length and angle of the rod antenna to determine the optimal position of the rod antenna is performed. Done.

FIG. 5 shows an example in which the direction of the conventional rod antenna shown in FIGS. 3 and 4 is changed. FIG. 5A is a front view, and FIG. 5B is a side view. . In the figure,
3 and 4 have the same functions as those in FIGS.
The same reference numerals are given.

In the prior art, when the position of the rod antenna is changed in order to receive an optimal radio wave, the position of the
When the rod antenna is refracted to some extent and a force is applied in the direction of arrow F or G as shown in FIG.
Rotates smoothly, for example, as shown in FIG. 4, when a force is applied in the direction of arrow D or arrow E without bending the rod 6 at all (while the rod 6 is straight), in this case, As a result, there is a problem that an excessive force is applied to the root of the rod 6, that is, the portion of the rotating bracket 3, and the portion is deformed or damaged.

[0009]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and is a member in which a rotating part is not deformed or damaged due to excessive stress being applied to the rotating part. An object to be solved is to provide a connecting means between them and a rod antenna using the connecting means.

[0010]

According to the first aspect of the present invention, there is provided the following:
, A second member mounted on the first member so as to be able to rotate forward and reverse about the first rotation axis as an axis, and a second member that is orthogonal to the first rotation axis. A third member mounted in such a manner as to be able to rotate forward and reverse around a second rotation axis provided so as not to cross the first rotation axis, and A connecting means having a structure in which the third member can be tilted on the first member, wherein the third member is tilted in a direction that does not coincide with a rotation direction about the second rotation axis. In this case, by applying a force to the third member in any tilting direction, a rotational moment acts on the first rotation axis, and the second member rotates, thereby causing the tilting. It is designed to be performed promptly and reasonably.

According to a second aspect of the present invention, the first member, the second member, and the third member are connected by the connecting means according to the first aspect, and the third member is a rod type. And conducts from the third member to the first member, thereby fulfilling the function of an antenna.

According to a third aspect of the present invention, in the second aspect of the present invention, the third member comprises a plurality of rods having different cross-sectional areas which are telescopically connected to each other so as to be expandable and contractible. It is what it was.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention is directed to a connecting means applicable to a monopole rod antenna, in which two rotating shafts of a rotating part are set to be shifted to prevent deformation or breakage of the rotating part. It was done.

An embodiment of the present invention will be described below with reference to FIGS.
It will be described in detail based on. In FIGS. 1 and 2, portions having the same functions as those of the prior art are denoted by the same reference numerals, and the description thereof will not be repeated. FIG. 1 is an enlarged view of a main part of an embodiment of a rod antenna according to the present invention, wherein a plan view is shown in (A), a front view is shown in (B), and a side view is shown in (C). , 14 are the first axes of rotation, 1
Reference numeral 5 denotes a tilt center, and reference numeral 16 denotes a second rotation axis. FIG.
1A shows a cross section taken along line II ′ of FIG. 1C. FIG. 2 is an overall view of a rod antenna provided with a main part of the present invention shown in FIG.
The side view is shown in FIG. The structure and function related to the rod antenna have been described in the related art, and thus are omitted here.

As shown in FIG. 1, in the rod antenna of the present invention, the rotating bracket 3 is attached to the rotating bearing bracket 2 so as to be rotatable in the normal and reverse directions with the rotating shaft 14 as the first rotating shaft. The rotating metal fitting 3 is provided with a through hole (not shown) for passing the small screw 4 at a position away from the rotating shaft 14 by a distance J. On the other hand, the base metal fitting 5 is formed with two fins so as to sandwich the rotating metal fitting 3.
The fin is provided with a through hole (not shown) through which the small screw 4 passes, and a thread is formed inside the through hole provided in one of the fins. The rotating metal fitting 3 and the base metal fitting 5 are arranged so that their through holes are aligned with each other, and are connected by tightening with a small screw 4. With such a configuration, the portion above the base metal fitting 5 rotates about the axial center of the small screw 4 as the second rotation axis, and the rod (pole) 6 is inclined with respect to the rotating metal fitting 3. In addition, the following functions can be provided.

That is, in the rod antenna having the above-described configuration, a state in which the axial direction of the rotating shaft 14 and the rod 6 is parallel, that is, a so-called straight state in which the rod 6 is not inclined with respect to the rotating bearing 2. And rod 6
For example, if the force of Pkgf acts in the N direction shown in FIG. 1A at the tilting center 15 when the distance J is set in cm, the first rotation axis A rotation torque of J × Pkg · f acts on 14, and the force applied to the rod 6 is converted into a rotation force in the Q direction about the first rotation shaft 14. Similarly, when the height of any one of the rods 6 is set as a power point and, for example, the force of Pkgf acts in the O direction shown in FIG. A rotation torque of J × Pkg · f acts on the first rotating shaft 14, and the force applied to the rod 6 is converted into a rotating force in the R direction about the first rotating shaft 14.

In this embodiment, the structure in which the rotating metal fitting 3 is sandwiched between the fins of the base metal fitting 5 has been described, but the structure in which the rotating operation works as described above need not be the sandwiching structure. Also, in FIG.
Although the force applied from the direction perpendicular to the tilting direction of
As the base metal fitting 5 rotates and the direction of the applied force approaches the direction of the bending operation, it is difficult to convert the rotation into the rotation in the R direction or the Q direction, and the original tilting operation occurs.

[0018]

According to the first aspect of the present invention, the connecting means of the first aspect shifts the third member in an arbitrary direction because the first rotation axis is displaced without intersecting with the second rotation axis. When tilting is desired, the tilting can be quickly and easily performed without applying an excessive external force to the rotating portion.

According to the present invention, the tilting center of the rod (pole) is set at a position deviated from the rotation axis (first rotation axis) of the rotation fitting. Even if a force is applied to the rod in any lateral direction while the rod is straightened, the rod consisting of the rotating bracket, rotating bearing bracket, and guide bracket is subjected to a rotating moment, so that the rod can be tilted quickly. Is performed without difficulty,
The rotation fitting can be prevented from being deformed or damaged.

[Brief description of the drawings]

FIG. 1 is an enlarged view of a main part of an embodiment of a rod antenna according to the present invention.

FIG. 2 is an overall view of a rod antenna including a main part of the present invention shown in FIG. 1;

FIG. 3 is a diagram illustrating an example of a rod antenna according to the related art.

4 is a diagram showing an example in which the conventional rod antenna shown in FIG. 3 is attached to a housing 10 of a liquid crystal television.

5 is a diagram showing an example when considering the direction of the conventional rod antenna shown in FIGS. 3 and 4. FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Guide bracket, 2 ... Rotation bearing bracket, 3 ... Rotation bracket, 4
... machine screw, 5 ... base bracket, 6, 7 ... rod (pole),
8 ... decorative ball, 9 ... screw hole, 10 ... TV housing, 11 ...
Small screw, 12 ... lead wire, 13 ... housing hole, 14 ... first rotation axis, 15 ... oblique center, 16 ... second rotation axis.

Claims (3)

[Claims] A first member, a second member mounted on the first member so as to be able to rotate forward and reverse around a first rotation axis as an axis, and A third direction, which is oriented in a direction orthogonal to the first rotation axis and is mounted so as to be able to rotate forward and reverse around a second rotation axis provided so as not to cross the first rotation axis. And a connecting means having a structure in which the third member can be tilted on the first member, wherein the connecting member has a structure in which the third member does not coincide with a rotation direction about the second rotation axis. When tilting the third member, a rotational moment acts on the first rotation axis by applying a force to the third member in an arbitrary tilting direction, and the second member rotates. And the tilting is carried out quickly and without difficulty. means. 2. The first member, the second member, and the third member connected by the connecting means according to claim 1, wherein the third member has a rod shape. A rod antenna, wherein conduction is made from the third member to the first member so as to fulfill the function of an antenna. 3. The multi-stage rod according to claim 2, wherein the third member comprises a plurality of rods having different cross-sectional areas and nestedly connected to each other so as to be extendable and contractible.
The rod antenna as described.