JPH07249913A - Device for supporting antenna for radio communication - Google Patents

Abstract

PURPOSE:To prevent the damage on a feeding cable and reduction in antenna characteristics and to attain excellent communication by allowing a cable of which one end is fixed to the base end of an antenna body and the other end is connected to the I/O terminal part of a radio communication set to pass through rotation side and connection side cylindrical hollow parts. CONSTITUTION:A radio communication antenna supporting device is provided with a fixed side connecting cylindrical body 10 having a fixing flange 11 to be fixed to the casing of the radio communication set on its outer peripheral part, a rotation side connecting cylindrical body 20 having a shaft cylinder 21 to be rotatably engaged with the inside of the cylindrical body 10 at its base end part and an antenna body mounting part 22 to its tip part and a rotation regulator 30 for regulating the rotation range of the cylindrical body 20 to the cylindrical body 10. Thereby a feeding cable 2 of which one end is fixed to the base end part of the antenna body 1 mounted to the mounting part 22 and the other end is connected to the I/O terminal of the radio communication set is passed through the hollow parts of the cylindrical bodies 20, 10 in a freely inserted state. Consequently the cable 2 can be avoided from being extremely bent or sharply twisted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless communication antenna pivoting device for axially supporting a wireless communication antenna applied to a mobile phone system or the like with respect to a housing of a wireless communication set.

[0002]

2. Description of the Related Art Generally, a wireless communication antenna applied to a mobile phone system or the like has a rod-shaped antenna main body in order to improve compatibility with a diversity system and to reduce a storage space in a distribution process. The base end of is rotatably supported with respect to the casing of the wireless communication set, and the mounting angle of the antenna body with respect to the casing can be arbitrarily changed.

In the wireless communication antenna having such a structure, there is a problem in dealing with the power feeding cable connecting the antenna body and the wireless communication set. That is, when the power feed cable is passed through the base end shaft support portion of the antenna main body and guided into the wireless communication set, the power supply cable in the base end shaft support portion is largely bent and the antenna main body is rotated. Since the power supply cable is strongly twisted each time the operation is performed, a large torsional stress acts on that part, and the power supply cable may be damaged including its characteristics within a short period of time. Therefore, a so-called coaxial rotary connector is usually interposed at the base end shaft support portion, and the power feeding cables are relayed via the coaxial rotary connector.

[0004]

In the conventional one using the coaxial rotary connector, there is no possibility of damaging the power feeding cable, and the antenna characteristics are hardly deteriorated, and good transmission / reception is possible. However, since the coaxial rotary connector itself has an extremely complicated structure, there is a problem in terms of reliability, and it is very expensive, which leads to an increase in the cost of the entire antenna and thus of the wireless communication set. There was a problem.

An object of the present invention is to provide the following antenna supporting device for wireless communication. (1) There is no danger of the power supply cable being damaged within a short period of time,
An antenna pivot device for wireless communication, which is capable of good transmission and reception without deterioration of antenna characteristics, has a remarkably simple structure, and is highly reliable and inexpensive to manufacture.

(2) In addition to the features of the device of (1) above, the structure of the rotating side coupling cylinder is extremely simple, the molding process is easy, and the mechanical coupling is advantageous in terms of mechanical strength. An antenna pivot support device for wireless communication.

[0007]

In order to solve the above problems and achieve the object, the antenna support device for wireless communication of the present invention is configured as follows. (1) An antenna supporting device for wireless communication according to the present invention comprises a fixed side coupling cylinder having an attachment flange on an outer peripheral portion thereof that can be mounted on a casing of a wireless communication set, and a shaft inside the fixed side coupling cylinder. A rotation-side coupling cylinder having a shaft cylinder that is rotatably fitted and inserted around a center at a base end and an antenna body insertion portion at the tip, and the rotation side with respect to the fixed-side coupling cylinder. A rotating range restricting body that restricts a rotating range of the coupling cylinder, one end of which is connected to a base end portion of the antenna body inserted into the antenna body inserting portion, and the other end of which is a wireless communication set. The power supply cable connected to the input / output end is passed through the hollow portions of the rotating-side coupling cylinder and the fixed-side coupling cylinder in a loosely inserted state.

[0008]

As a result of taking the above-mentioned means, the following effects occur. (1) In the antenna supporting device for wireless communication according to the present invention, the rotatable range of the rotating-side coupling cylinder with respect to the fixed-side coupling cylinder is restricted within the set angle range by the rotation range restricting body. In addition, since the power supply cable is inserted in the hollow portions of the rotating-side coupling cylinder and the fixed-side coupling cylinder in a loosely inserted state, it is possible to prevent the power cable from being extremely bent or twisted. It can be avoided. Therefore, the power supply cable is not likely to be damaged within a short period of time. Further, the antenna pivot support device for wireless communication of the present invention does not use a coaxial rotary connector or the like at all, and includes a fixed side coupling cylinder body, a rotation side coupling cylinder body including a shaft cylinder, and a rotation side coupling cylinder body. Since it is composed of a rotation range regulation body that regulates the rotation range of the body, its structure is extremely simple and highly reliable, and it can be manufactured at low cost.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a side view showing the structure of an antenna supporting device for wireless communication according to an embodiment of the present invention, with its main parts cut away. FIG. 2 is a front view showing the configuration of the antenna support device for wireless communication according to the embodiment. 3 (a) (b) (c)
FIG. 3 is a diagram showing a configuration of a main part of an antenna supporting device for wireless communication according to the same embodiment, (a) is a side sectional view showing each part in an exploded manner, and (b) is a view taken along the line BB of (a). Sectional drawing, (c) is CC sectional view taken on the line of (a). FIG. 4 is a perspective view showing a configuration of a main part of the wireless communication antenna pivot device according to the embodiment.

1 to 3, reference numeral 1 denotes a wireless communication antenna main body applied to, for example, a mobile phone system, and a coaxial power supply cable 2 is led out from a base end portion of the antenna main body 1. . As shown in FIGS. 1 to 3, the wireless communication antenna support device of the present embodiment is roughly divided into a fixed side coupling cylinder body 10, a rotation side coupling cylinder body 20, and a rotation range provided between both cylinder bodies. It consists of a regulation body 30.

The fixed-side coupling cylinder 10 is made of a material such as a hard synthetic resin and integrally molded in a pipe shape.
A mounting flange 11 that can be mounted on a housing (not shown) of the wireless communication set is provided on the outer peripheral portion thereof, and an annular protrusion 12 protruding in the axial direction is provided on the inner peripheral portion of the base end.
Are formed.

The rotating-side coupling cylinder 20 is also integrally molded in the shape of a pipe made of a material such as a hard synthetic resin and bent into an L shape, and is fixed to the base end thereof. A shaft cylinder 21 that is rotatably fitted in the side coupling cylinder body 10 is rotatably fitted around the shaft center. Further, the turning side coupling cylinder 20 is provided with an antenna main body insertion portion 22 for inserting the base end portion of the antenna main body 1 at the tip end portion thereof.

The shaft cylinder 21 is made of a metal such as brass. One end of the shaft cylinder 21 has an outer peripheral portion, that is, a portion to be planted in the synthetic resin cylinder, in order to enhance the coupling force with the synthetic resin cylinder. A knurled portion 21a is provided. Shaft cylinder 2
A groove 21b into which an O-ring O for preventing rattling is fitted is provided in the outer peripheral portion of the center of 1. A groove 21c for fitting the retaining member E is provided on the outer peripheral portion of the tip end of the shaft cylinder 21.

As shown in FIG. 3, the rotation range restricting body 30 has an angle θ (9 in this embodiment) on one end surface of the fixed side coupling cylinder 10.
The arc-shaped fixed-side projection 31 provided over 0 ° and the angle α (90 in this embodiment) on one end surface of the rotating-side coupling cylinder 20.
Angled), which is provided with the arc-shaped turning-side protrusion 32. Thus, on the rotation locus R of the rotation-side protrusion 32, the rotation range of the rotation-side protrusion 32 is set by the fixed-side protrusion 31 to be the angle range "360 ° -α-θ" (in this embodiment, θ,
Since both α are 90 °, the set angle range is limited to 180 °).

When assembling the rotation-side coupling cylinder 20 to the fixed-side coupling cylinder 10, as shown in FIG. 3A, the rotation-side coupling cylinder is moved into the fixed-side coupling cylinder 10. 20
The shaft cylinder 21 is inserted. At this time, the outer peripheral surface of the shaft cylinder 21 is closely held by the protrusion 12 of the fixed-side coupling cylindrical body 10, and the O-ring O is closely contacted with the inner peripheral surface of the fixed-side coupling cylindrical body 10. Therefore, the shaft cylinder 21 is fixed to the fixed side coupling cylinder body 10.
It is rotatably fitted in the inner peripheral surface of the without any rattling. The shaft cylinder 2 protruding toward the base end side of the fixed side coupling cylinder body 10
The groove 21c provided at the projecting end of No. 1 has an E
A retaining member E called a clutch is fitted.

Thus, as shown in FIG. 1, the other end portion of the feeding cable 2 which is led out from the base end portion of the antenna body 1 inserted into the antenna body insertion portion 22 of the turning side coupling cylinder 20 is , Inside the hollow portion of the rotary side coupling cylinder 20 and inside the hollow portion of the fixed side coupling cylinder 10 (specifically, the fixed side coupling cylinder 1
After passing through the hollow portion of the shaft cylinder 21 fitted in the hollow portion of 0) in the loosely inserted state, it is connected to the input / output end of the wireless communication set.

As shown in FIG. 2, the antenna body 1 is rotatably supported at its base end portion with respect to the housing of the wireless communication set by the main shaft supporting device, and the antenna body 1 is supported with respect to the housing.
The mounting angle of X + Y (90.
Only the range of °) can be changed.

As shown in FIG. 4, the mounting flange 11 of the fixed side coupling cylinder 10 has a substantially rectangular shape as a whole, and the opposing wall bodies 40, 40 in the casing of the wireless communication set.
It is formed so that it can be held by a pair of holding recesses 41, 51 provided in the thick portions 42 and 52 of the edge portion of 50, respectively. In addition, it is preferable to insert an elastic member having an appropriate structure at the bottom of the pair of holding recesses 41 and 51 so that the mounting flange 11 can be elastically held.

Although not shown in the drawings, as another embodiment of the present invention, a rotation-side projection for restricting the rotation range is provided integrally with the retaining member E, and the rotation range of this rotation-side projection is provided. Can also be configured to be restricted by a fixed-side protrusion provided at the base end (right end in FIG. 1) of the fixed-side coupling cylinder 10.

The configuration and operational effects of the above-described embodiment are summarized as follows. (1) The wireless communication antenna support device according to the present embodiment has a mounting flange 11 that can be mounted on a housing of a wireless communication set.
Has a fixed side coupling cylinder 10 having an outer peripheral portion, and a shaft cylinder 21 inserted into the fixed side coupling cylinder 10 so as to be rotatable around an axis, and has an antenna at the tip. A rotation-side coupling cylinder body 20 having a main body insertion portion 22 and a rotation range regulating body 30 that regulates a rotation range of the rotation-side coupling cylinder body 20 with respect to the fixed-side coupling cylinder body 10 are provided. . Thus, the power feeding cable 2 having one end connected to the base end portion of the antenna body 1 inserted in the antenna body insertion portion 22 and the other end connected to the input / output end portion of the wireless communication set is rotated. The hollow portions of the side coupling cylindrical body 20 and the fixed side coupling cylindrical body 10 are allowed to pass through in a loosely inserted state.

As described above, the rotatable range of the rotary side coupling cylinder 20 with respect to the fixed side coupling cylinder 10 is the rotation range restricting body 30.
The power feeding cable 2 is inserted into the hollow portions of the rotary side coupling cylinder 20 and the fixed side coupling cylinder 10 in a loosely inserted state. It is possible to prevent the cable 2 from being extremely bent or twisted. Therefore, the power supply cable 2
Is not likely to be damaged in a short period of time. Further, the coaxial rotating connector or the like is not used at all,
The structure is extremely simple because it is composed of the rotation-side coupling cylinder body 20 including the shaft cylinder 21 and the rotation-range regulating body 30 that regulates the rotation range of the rotation-side coupling cylinder body 20. It is highly reliable and can be manufactured at low cost. (2) The antenna support device for wireless communication according to the present embodiment is the antenna support device according to (1) above, in which the rotation range restricting body 30 is a rotary member provided on the rotation-side coupling cylinder body 20. Moving protrusion 3
2 on the fixed-side coupling cylinder 10 so as to limit the rotation range of the rotation-side protrusion 32 within the set angle range (360 ° -α-θ) on the rotation locus R of the rotation-side protrusion 32. The fixed side protrusion 31 is provided.

As described above, the rotation range restricting body 30 is composed of the rotation-side protrusion 32 provided on the rotation-side coupling cylinder 20 and the fixed-side protrusion 31 provided on the fixed-side coupling cylinder 10. ,
In addition to having a simple structure, there is an advantage that the turning angle range of the turning side coupling cylinder 20 can be easily set to a desired range by the way of providing the protrusions 31 and 32. (3) The antenna pivotal support device for wireless communication of the present embodiment is the antenna pivotal support device according to (2) above, in which the rotation-side coupling cylinder body 20 is inserted into the fixed-side coupling cylinder body 10. Shaft cylinder 21
However, the retaining member E provided on the shaft cylinder 21 and the rotation range restricting member integrally provided with the retaining member E so as to prevent the stationary side coupling cylindrical body 10 from coming out. And a moving side protrusion (not shown).

As described above, the rotation-side projection (not shown) for restricting the rotation range is provided integrally with the retaining member E provided on the shaft cylinder 21 of the rotation-side coupling cylinder 20. Since the movement of the side protrusion is restricted by the fixed side protrusion (not shown) and the rotation range of the rotating side coupling cylinder 20 is restricted, the rotating side protrusion is fixed to the rotating side coupling cylinder 20. Since it is not necessary to directly provide it to a part of the above, the structure of the turning side coupling cylinder 20 is simplified. As a result, the molding process is facilitated and the mechanical strength of the entire coupling cylinder is improved. (4) The antenna support device for wireless communication of the present embodiment is the antenna support device described in (1) above, wherein the mounting flange 11 of the fixed-side coupling cylinder 10 is the housing of the wireless communication set. Is formed so that it can be held by a pair of holding recesses 41, 51 at the edges of the opposing wall bodies 40, 50.

As described above, the mounting flange 11 of the fixed-side coupling cylinder 10 has a pair of holding recesses 41.5 at the edges of the opposing walls 40 and 50 in the housing of the wireless communication set.
Since it is formed so that it can be held by one, it can be easily attached to the housing without using a mounting screw or the like. (5) The antenna support device for wireless communication of this embodiment includes the following modifications.

Mounting flange 1 for fixed side coupling cylinder 10
One with a mounting screw insertion hole at the corner. Arrangement positions of the rotation-side protrusion 31 and the fixed-side protrusion 32, length dimensions (arc angles) θ and α other than 90 °, and rotation angles X and Y of the antenna body 1 are arbitrarily set. thing. However, it is preferable that the variable rotation range does not exceed 180 °.

[0026]

According to the present invention, the following antenna can be provided. (1) There is no danger of the power supply cable being damaged within a short period of time,
An antenna pivot device for wireless communication, which is capable of good transmission and reception without deterioration of antenna characteristics, has a remarkably simple structure, and is highly reliable and inexpensive to manufacture.

(2) In addition to having the features of the device of (1) above, the structure of the rotating side coupling cylinder is extremely simple, the molding process is easy, and the mechanical coupling is advantageous in terms of mechanical strength. An antenna pivot support device for wireless communication.

[Brief description of drawings]

FIG. 1 is a side view showing a configuration of a wireless communication antenna pivot device according to a first embodiment of the present invention with a main part cut away.

FIG. 2 is a front view showing a configuration of a wireless communication antenna pivot device according to the embodiment.

3A and 3B are diagrams showing a configuration of a main part of an antenna supporting device for wireless communication according to the embodiment, FIG. 3A is a side sectional view showing each part in an exploded manner, and FIG. 3B is a sectional view taken along line BB of FIG. Cross-sectional view taken along line arrow, (c)
FIG. 7A is a sectional view taken along the line CC of FIG.

FIG. 4 is a perspective view showing a main configuration of a wireless communication antenna pivot device according to the embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Antenna main body 2 ... Power supply cable 10 ... Fixed side coupling cylinder 11 ... Mounting flange 12 ... Projection ridge 20 ... Rotation side coupling cylinder 21 ... Shaft cylinder 22 ... Antenna body insertion part 30 ... Rotation range regulation body 31 ... Fixed side projection 32 ... Rotating side projection

Claims (1)

[Claims] Claim: What is claimed is: 1. A fixed side coupling cylinder having a mounting flange on the outer peripheral portion, the mounting flange being mountable to a casing of a wireless communication set; and a fixed side coupling cylinder rotatably fitted around the axis. And a rotation-side coupling cylinder having an antenna body insertion portion at the tip, and a rotation range of the rotation-side coupling cylinder with respect to the fixed-side coupling cylinder. And a rotation range restricting body, one end of which is connected to a base end portion of the antenna body inserted in the antenna body insertion portion, and the other end of which is connected to an input / output end portion of a wireless communication set. An antenna pivotal support device for wireless communication, wherein a cable is passed through the hollow portions of the rotating side coupling cylinder and the fixed side coupling cylinder in a loosely inserted state.