JP3068717U - Two-way shaft rotation mechanism - Google Patents

Abstract

(57) [Abstract] [Objective] To prevent twisting or breaking of a cable due to excessive rotation in a two-way shaft rotation mechanism for adjusting an angle of attack and an azimuth of an antenna, and maintain an adjustment and fixing function. The present invention comprises a two-way shaft seat 100, a vertical shaft unit 200, a support 300 pivotally connected to the vertical shaft unit, and a horizontal shaft unit 400. The bi-directional seat allows rotation about a horizontal axis unit, and the support allows rotation about a vertical axis. The support is pressed against the vertical axis by the stopper via the spring washer, and the horizontal axis unit is inserted into the horizontal axis hole of the two-way shaft seat by inserting the pair of thin leaf spring elastic pieces between them. Maintain frictional force. Further, the rotation of the support is regulated by a rotation angle regulating member provided on the vertical axis unit and a downward stopper of the support.

Description

[Detailed description of the invention]

[0001]

[Technical field of invention]

 The present invention relates to a two-way rotation mechanism, and more particularly to a two-way rotation of a flat antenna capable of appropriately and reliably adjusting the direction of the flat antenna.

[0002]

[Prior art]

 Conventionally, a straight rod-shaped telescopic antenna has been used as an antenna used for one-dimensional polarized communication radio waves. The conventional straight rod-shaped telescopic antenna has one rotational degree of freedom in its positioning portion in order to efficiently receive an incoming radio wave. In this way, the antenna angle is adjusted to match the polarization angle of the incoming radio wave.

[0003] However, in this method, the intensity of the one-dimensional polarized communication radio wave is often reduced at the transmission stage due to interference from various obstacles and interference from other signals and electromagnetic fields. In order to attenuate by the various disturbances encountered in the above, the straight rod-shaped telescopic antenna provided with the one rotational degree of freedom still receives the arriving radio wave efficiently, no matter how much it is adjusted to the optimal direction. I couldn't do that.

[0004] In order to overcome the above-mentioned drawbacks of the one-dimensional polarized communication radio wave, a planar antenna for transmitting and receiving a radio wave having a two-dimensional space has been developed. To accommodate the two-dimensional polarized radio wave described above, the planar antenna applied to it has two rotatable degrees of freedom, which allows its elevation angle and plane position to be adjusted. By adjusting the antenna angle so as to match the polarization angle of the two-dimensional radio wave to be received, a two-dimensional radio signal can be efficiently received.

FIG. 6 shows a conventional well-known planar antenna. The known planar antenna mainly includes an antenna 1, a casing 2, a hollow tube 31, ear members 32, 32, supporting portions 42, 42, screws 43, 43, and a cable (not shown). It is configured with. Then, the supporting members 42, 42 provided on the upper surface of the flat plate 41 press the ear members 32, 32 of the hollow member 31 of the supporting portion to generate a frictional force between the ear members 32, 32. The hollow tube 31 is pivotally supported and positioned so as to be rotatable in the horizontal direction with respect to the casing 2. The antenna 1 is configured to be rotatable in a direction perpendicular to the casing 2.

However, in such a method of adjusting and fixing the antenna angle, the user can rotate the planar antenna in an arbitrary direction along the direction of the radio wave to be directed. There was a problem that the cable inside was twisted or broken due to excessive rotation. Furthermore, in the method of adjusting and fixing the antenna angle, by selecting a combination of materials, the problems of torsion caused by rotation of the cable in the two-way shaft rotation mechanism and displacement due to the weight of the antenna itself can be overcome to some extent. Nevertheless, after a certain period of use, the two-way rotating mechanism always loses its original adjustment and fixing functions due to the wear of the moving parts. There is much room for improvement.

[0007]

[Problems to be solved by the invention]

 The main purpose of the present invention is to provide a planar antenna with a rotation angle regulating member around a vertical axis for adjusting the azimuth angle, so that a user can freely move the planar antenna along the azimuth direction. An object of the present invention is to provide a two-way shaft rotation mechanism that can prevent torsion and breakage caused by excessive rotation of a cable in the cable when the cable is rotated.

Another object of the present invention is to provide an elastic friction member in each direction shaft to increase the friction torque of the rotating member in each direction shaft, so that the parts can be adjusted and fixed originally due to wear. An object of the present invention is to provide a two-way shaft rotation mechanism that can prevent the function of the above from being lost.

Still another object of the present invention is to provide a two-way shaft rotating mechanism that can increase the service life by forming the rotating member of each direction shaft from a metal material and enhancing its mechanical strength. To provide.

[0010]

[Means for Solving the Problems]

 The two-way shaft rotation mechanism of the present invention mainly includes a two-way shaft seat, a vertical shaft unit provided in the vertical direction in the two-way shaft seat, and a planar antenna pivotally supported by the vertical shaft unit. It has a supporting body to support, and a horizontal shaft unit provided in the horizontal direction in the two-way shaft seat. The two-way shaft seat is rotatable with respect to the horizontal shaft unit, and the support is rotatable around the vertical shaft unit with respect to the two-way shaft seat. Further, a spring washer is pressed against the support with a stopper. Therefore, even after long-term use, the frictional force between the support, the spring washer, and the vertical shaft unit can be maintained.

For this reason, the horizontal shaft unit includes a shaft main body and two thin leaf spring elastic pieces. When the shaft main body and the elastic piece are inserted into the horizontal shaft holes of the two-way shaft seat, both ends of the elastic piece press the shaft main body, respectively. Therefore, the frictional force always acts on the shaft main body by the elastic piece. For this reason, even after long-term use, the frictional force between the shaft main body, the elastic piece, and the horizontal shaft hole can be maintained. Therefore, in the present invention, by providing an elastic friction member on each direction shaft and increasing the friction torque of the rotation member on each direction shaft, it is possible to prevent the parts from being worn, thereby solving the problems of the conventional device. be able to.

The vertical axis unit is provided with a rotation angle regulating member, and the support is provided with a stopper extending downward. Therefore, when the support is rotated with respect to the vertical axis unit, the stopper of the support is restricted by the rotation angle restricting member, so that the support cannot be arbitrarily rotated and can be rotated for less than one rotation. ing. Therefore, according to the invention, the cable therein can be prevented from being twisted or broken due to excessive rotation of the support.

[0013]

[Embodiment of the invention]

 First, referring to FIG. 1, FIG. 1 is a perspective view showing an assembled appearance of the two-way shaft rotating mechanism according to the present invention. It mainly comprises a two-way shaft seat 100, a vertical shaft unit 200, a support 300 for supporting a planar antenna, and a horizontal shaft unit 400. The vertical axis unit 200 is provided in the two-way shaft seat 100 in the vertical direction (azimuth of the planar antenna). The support 300 is pivotally supported by the vertical axis unit 200. The horizontal axis unit 400 is provided in the two-way shaft seat 100 in the horizontal direction (the angle of attack of the planar antenna). Both ends of the horizontal shaft unit are fixed on an antenna casing seat (not shown) so that the two-way shaft seat 100 can rotate around the horizontal shaft unit. It is configured to be able to rotate around the vertical axis unit with respect to the direction axis seat 100. Thus, the elevation angle and the azimuth angle of the planar antenna 1 can be adjusted so that the angle of the planar antenna 1 matches the polarization angle of the two-dimensional radio wave to be received. As a result, the two-dimensional radio signal can be efficiently received.

Referring to FIG. 2, FIG. 2 is an exploded view showing the structure of the two-way shaft rotating mechanism according to the present invention. As shown in FIG. 2, the two-way shaft seat 100 has a three-way tubular shape and includes one vertical shaft hole 110 and one horizontal shaft hole 120 orthogonal to the vertical shaft hole 110, and a first opening 112 of the vertical shaft hole 110. The first shaft 210 of the vertical shaft unit 200 is inserted therein, and the horizontal shaft unit 400 is inserted into the second opening 122 of the horizontal shaft hole 120.

The vertical shaft unit 200 includes a first shaft 210 extending downward, a first flange 220 located at an upper end of the first shaft 210, and an integral unit above the first shaft 220 at a predetermined distance from the first flange 220. , And a second shaft 230 extending further upward from the second flange 240. Then, the first shaft 210 of the vertical shaft unit 200 is aligned with the positioning hole 114 of the vertical shaft hole 110 and the first shaft 210 such that the first flange 220 of the vertical shaft unit 200 contacts the upper end of the vertical shaft hole 110. The vertical shaft unit 200 is fixed in the vertical shaft hole 110 of the two-way shaft seat 100 by inserting the fixing insertion pin 130 through the hole 212.

Next, the spacer 250 is fitted on the second shaft 230 and is brought into contact with the second flange 240 so as to be placed. Then, the second shaft 230 is fitted into the pivot hole 330 of the support 300, and the spring washer 340 and the support 300 are pivotally mounted on the second shaft 230 by the stopper 350.

The horizontal shaft unit 400 includes a shaft main body 410 and two thin plate spring elastic pieces 420 and 420. The shaft main body 410 is provided with positioning grooves 412 and 412 at two locations, respectively. The arrangement interval is slightly larger than the length of the horizontal shaft hole 120. After the shaft main body 410 and the thin plate springs 420 and 420 are inserted into the second opening 122 of the horizontal shaft hole 120, the positioning retaining rings 430 and 430 are respectively inserted into the positioning grooves 412 and 412. The shaft body 410 is rotatably positioned in the second opening 122 of the horizontal shaft hole 120 by being fitted into the second shaft 122. According to the invention, the positioning retaining rings 430, 430 are preferably C-shaped or E-shaped retaining rings. Although not shown, mounting holes 414 and 414 provided at both ends of the shaft main body 410 are for fixing both ends of the shaft main body 410 to the antenna casing with mounting tools such as screws.

As shown in FIGS. 2 to 5, the support 300 is pivotally mounted on the vertical axis unit 200. Since the stopper 350 strongly presses the spring washer 340 against the upper surface of the support 300, the spring washer 340 always presses the support 300 against the upper surface of the spacer 250 on the second flange 240. Will be. Therefore, the frictional force between the support body 300, the spring washer 340, and the spacer can be maintained even after long-term use. Thereby, the problem of the conventional device can be solved.

Further, according to the present invention, the spring washer 340 is two disc-shaped springs (disc springs), and is disposed between the support 300 and the stopper 350 so as to face each other. It is preferable to apply more reliable pressing force to the support 300. Further, in the present invention, it is preferable that the disc-shaped spring is made of spring steel or beryllium copper to increase the service life.

On the other hand, after the shaft main body 410 and the two elastic pieces 420, 420 are inserted into the second opening 122 of the horizontal shaft hole 120, both the retaining rings 430, 430 are fixed to the respective positioning grooves 412, 412. Thus, the shaft main body 410 is rotatably positioned in the second opening 122 of the horizontal shaft hole 120. More specifically, in the present invention, as shown in FIGS. 2 and 5, the elastic pieces 420 and 420 are preferably arc-shaped thin leaf springs, and are preferably made of spring steel or beryllium copper.

After the shaft body 410 and the two elastic pieces 420, 420 are inserted into the second opening 122 of the horizontal shaft hole 120, both ends of the two elastic pieces 420, 420 make the shaft body 410 strong, respectively. It is pressed and in contact. For this reason, the elastic pieces 420, 420 always exert a strong pressing frictional force on the shaft main body 410. Therefore, the frictional force between the shaft main body 410 and the elastic pieces 420, 420 and the second opening 122 can be maintained even after long-time use. As a result, the problems of the conventional device can be solved.

Next, in FIG. 2 and FIG. 4, both ends in the longitudinal direction of the support body 300 are upwardly spaced from the respective ends at predetermined intervals in accordance with the width of the planar antenna 1. Fixing pieces 310 and 310 for fixing the planar antenna 1 are provided, and mounting holes 320 and 320 for fixing the planar antenna 1 to the upper surface of the support 300 by inserting screws into both sides of the support 300. 320 are provided.

In FIG. 2 and FIG. 4, the second flange 240 of the vertical axis unit 200 has a rotation angle regulating member 242 protruding from the second flange 240, and the support body 300 has a pivot support hole. In the vicinity of 330, a stopper 360 is provided extending downward to the periphery of the second flange. Accordingly, when the support 300 rotates about the pivot hole 330 with respect to the vertical axis unit 200, the stopper of the support 300 is regulated by the rotation angle regulating member 242 of the second flange 240. It cannot rotate, and can rotate only less than one rotation. The preferred angle of rotation is about 300-330 degrees. Therefore, the two-way shaft rotation mechanism of the present invention can prevent the cable therein from being twisted or broken due to excessive rotation of the support 300. In this invention, the rotating parts of each direction shaft are preferably made entirely of a metal material to enhance the mechanical strength, thereby improving the service life.

[0024]

[Effect of the present invention]

 As described above, the two-way shaft rotation mechanism of the present invention can prevent torsion or breakage caused by excessive rotation of the cable therein, and the original adjustment and fixing due to wear of parts. It has an excellent effect that the service life can be improved without losing the function.

Although the present invention has been described with reference to some of the preferred embodiments described above, these should not be construed as limiting the scope of the present invention. Anyone who is familiar with the technology in this field can make various changes without departing from the spirit of the present invention. Therefore, the protection scope of the present invention should conform to the contents defined in the appended claims.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an assembled appearance of a two-way shaft rotation mechanism according to the present invention.

FIG. 2 is an exploded view showing a structure of a two-way shaft rotation mechanism according to the present invention.

FIG. 3 is a plan view of the two-way shaft rotation mechanism according to the present invention.

FIG. 4 is a cross-sectional view taken along line 5-5 of FIG. 3 of the bidirectional shaft rotating mechanism according to the present invention.

FIG. 5 is a cross-sectional view of the two-way shaft rotation mechanism according to the present invention, taken along line 6-6 in FIG. 3;

FIG. 6 is a conventional antenna two-way shaft rotation mechanism.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Antenna 2 Casing 31 Hollow tube 32 Ear member 41 Flat plate 42 Support material 43 Screw 100 Two-way shaft seat 110 Vertical shaft hole 112 First opening 114 Positioning hole 120 Horizontal shaft hole 122 Second opening 130 Fixed insertion pin 200 Vertical axis Unit 210 First shaft 212 Positioning hole 220 First flange 230 Second shaft 240 Second flange 242 Rotation angle regulating member 250 Spacer 300 Support 310 Fixing piece 320 Mounting hole 330 Pivot hole 340 Spring washer 350 Stopper 360 Stopper 400 Horizontal Shaft unit 410 Shaft main body 412 Positioning groove 414 Mounting hole 420 Thin leaf spring elastic piece 430 Positioning retaining ring

Claims (4)

[Utility model registration claims] 1. A two-way shaft seat having a vertical shaft hole and a horizontal shaft hole, a first shaft extending downward, a first flange located at an upper end of the first shaft, and a predetermined flange from the first flange. A second flange provided at an interval above the second flange, and a second shaft extending further upward from the second flange, the lower surface of the first flange corresponding to the upper end surface of the vertical shaft hole. The second flange is fixed in the vertical shaft hole of the two-way shaft seat so as to be in contact with the vertical shaft unit, and a rotation angle regulating member is protruded from the second flange. A stopper is attached to the second shaft so as to be pivotally fixed to the second shaft, and extends downward. When the stopper is rotated with respect to the vertical axis, the stopper is rotated by the rotation angle regulating member. , So that it can rotate only within a predetermined range of less than one rotation A regulated support, comprising a shaft body and an elastic piece, wherein the shaft body is provided with positioning grooves on the left and right at intervals slightly larger than the length of the horizontal shaft hole in the longitudinal direction. An antenna bi-directional shaft rotating mechanism, comprising: a horizontal shaft unit that is positioned in a horizontal shaft hole so that a shaft main body can be rotated with respect to a bi-directional shaft seat by disposing a positioning retaining ring. 2. The antenna according to claim 1, further comprising a fixing insertion pin which penetrates through the vertical shaft hole and fixes the vertical shaft unit in the vertical shaft hole of the two-way shaft seat. Direction axis rotation mechanism. 3. The mechanism according to claim 1, wherein said spring washer is a disc-shaped spring. 4. The antenna bi-directional shaft rotation mechanism according to claim 1, wherein a rotation angle of the support with respect to a vertical axis unit is 300 to 330 degrees.