JP2585356B2 - Elevation angle adjustment mechanism of reflector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Purpose of the Invention] (Industrial application field) The present invention relates to an elevation angle of a reflector suitable for a portable antenna device used as a terrestrial mobile station for satellite communication including satellite broadcasting, for example. It relates to an adjustment mechanism.

(Prior Art) In general, an antenna device for satellite communication is required to conform to various antenna standards such as the U.S. FCC standard.
Large diameters such as 5m are required. For this reason, as a portable antenna device provided with such a reflector, a device intended for in-vehicle use has prevailed.

However, when the portable antenna device is used in a place where the vehicle cannot move, the portable antenna device cannot be transported, so that there is a problem that the use place is restricted.

On the other hand, conventional portable antenna devices intended for human power have reflectors of up to about 1.2 m, which do not conform to the U.S. There has been a problem that it is difficult to reliably transmit and receive signals to and from a communication satellite at a location.

For example, as the elevation angle adjusting mechanism of the reflecting mirror in such a conventional portable antenna device which is manually driven, as shown in FIG.
One end of 2 is linked to the base 3 and disposed.
The reflector 4 is mounted between one end of the link member 1 and the other end of the second link member 2. A jack 5 is linked and disposed as an elevating means between the other end of the first link member 1 and one end of the second link member 2. When the jack 5 is driven to expand and contract, the reflecting mirror is rotated in the elevation direction via the first and second link members 1 and 2 and the elevation angle is adjusted by ゜.

However, in the above-described elevation angle adjusting mechanism of the reflecting mirror, since the amount of movement of the jack 5 and the variable range の of the elevation angle have a direct proportional relationship due to its configuration, it is necessary to exchange signals with the communication satellite at any place in the world. If the required elevation angle adjustment of 5 ° to 80 ° is possible, the size becomes very large, and there is a problem that it is difficult to carry by human power.

For this reason, in forming such a portable antenna device, it is possible to secure a small size that is easily portable by humans, while conforming to various antenna standards such as the U.S. FCC standard, and Therefore, it is required to ensure that signals can be transmitted and received anywhere in the world.

In addition, the circumstances related to the elevation angle adjustment means are not limited to those intended for portability by human power, and those intended for in-vehicle use, and also in a set-up type antenna device, a large elevation angle adjustment range is similarly adopted. However, there is a problem that the size is increased.

(Problems to be Solved by the Invention) As described above, the conventional antenna device has a problem that if it is configured to be able to receive a signal from any place in the world, it becomes large.

The present invention has been made in view of the above circumstances, and has as its object to provide a mechanism for adjusting the elevation angle of a reflecting mirror so that the configuration can be simplified, the size can be reduced, and the elevation angle can be surely adjusted. And

[Means for Solving the Problems] According to the present invention, first to fifth link members having different lengths which are linked to each other in a substantially box shape on a base while holding a reflecting mirror, and one end thereof The first part is rotatably supported substantially at the center of the base, and the other end is installed substantially parallel to the base.
And an elevating and lowering means which is rotatably supported at substantially the center of any one of the fifth to fifth link members and which can be extended and contracted, to constitute an elevation angle adjusting mechanism of the reflecting mirror.

(Operation) According to the above configuration, the first unit is linked to the elevation of the elevation unit.
The fifth to fifth link members are variable, and the elevation angle of the reflecting mirror is variably adjusted. As a result, the variable range of the elevation angle of the reflecting mirror can be changed more than the elevating / lowering rate of the elevating / lowering means, and adjustment of, for example, 5 ° to 80 ° is realized.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows a portable antenna device equipped with a reflecting mirror elevation angle adjusting mechanism according to one embodiment of the present invention,
10, a base 30, a support base 50, a reflecting mirror 70, and a power supply unit 90 on which the elevation angle adjusting mechanism, which is a feature of the present invention, is disposed, are removably combined. That is, as shown in FIG. 2, the leg portion 10 has a mounting portion 11 having an adjustable azimuth angle at a substantially central portion thereof.
Is provided. Around the mounting portion 11, first to third legs 12 having level-adjustable installation portions 12a to 14a are provided.
To 14 are arranged with a predetermined interval. The first to third legs 12 to 14 are arranged such that the first leg 12 is extendable and contractable in the axial direction (the direction of arrow A) via an expansion and contraction mechanism 15, and sandwiches the first leg 12. The second leg 13 and the third leg 14 are disposed so as to be rotatably foldable and deployable with respect to the mounting portion 11, and the first leg 12 is moved in accordance with the fold deployment. The telescopic mechanism 15 is selectively operated to adjust the length to substantially the same length. As shown in FIG. 3, for example, the telescopic mechanism 15 includes an outer cylinder 12b whose first leg 12 is fixedly supported by the mounting section 11, and an inner cylinder 12c provided with the installation section 12a. The inner cylinder 12c is provided in the outer cylinder 12b so as to be able to expand and contract in the axial direction (the direction of arrow A). A locking clamp member 15a is fixed to an end of the outer cylinder 12b. A ratchet type operation lever 15b is operably provided on the clamp member 15a, and a locking portion 15c corresponding to the sliding member 12b provided on the inner cylinder 1c is provided at an intermediate portion thereof.
Are formed. This clamp member 15a is used for operating lever 1.
In conjunction with the switching operation of 5b, the inner cylinder 12c is locked and unlocked to the outer cylinder 12b to regulate the entrance and exit, and the length of the first leg 12 is reduced.
L holds ₁ and L ₁ -L ₂ (see FIG. 2 (b)).

In addition, a base 30 is rotatably mounted on the mounting portion 11 of the leg 10 using a screw (not shown) or the like. As shown in FIG. 1, a mounting portion 32 is formed on the base 30 at a substantially central portion of the base 31 so as to correspond to the mounting portion 11 of the leg 10. Then, first to third link members 33 to 35 having different lengths are formed in a substantially trapezoidal shape on the base 31 sandwiching the mounted portion 32 by using coupling pins (not shown for convenience of illustration). A pair of link mechanisms 36 , 36 linked to each other are disposed facing each other, and fourth and fifth link members having different lengths between the link mechanisms 36 , 36 are provided.
It is linked in a substantially box shape using 37,38. Reinforcing members 39 are linked and attached to both ends of the fourth link member 37 among them. Also, the base 31 and the fourth link member
An elevating mechanism 40 called a jack for adjusting the elevation angle is link-coupled between substantially the center portions of the 37 using a coupling pin (not shown for convenience of illustration). As shown in FIG. 4, the lifting mechanism 40 is provided with a handle 40b operable on a jack body 40a, and when the drive shaft 40c is driven to expand and contract in the axial direction corresponding to the rotation operation of the handle 40b. As shown in FIG. 5, first to fifth link members 33 to 35, 37, 38 (in FIG. 5, for convenience of illustration, FIG. 4 and fifth link members 37, 38 are shown. 3) is controlled, and the elevation angle of the reflecting mirror 70, which will be described in detail later, is continuously variably set from 5 ° to 80 °.

The base has first to fifth link members 33 to 35, 3
The connecting pins (not shown for the sake of illustration, not shown) of the predetermined link connecting portion of the lifting mechanism 40 are provided detachably, and the connecting pins are detached and pivotally folded, or By deploying, as shown in FIGS. 6 (a) to 6 (d), it is folded and deployed to a portable folding state or a deployment state in which an antenna can be installed.

Further, the support base 50 detachably mounted on the base 30 is detachably mounted with a reflecting mirror mounting member 51 pin-connected between the fifth link member 38 and the reinforcing member 39 (see FIG. (See FIG. 1). This reflector mounting member 51 is a telescopic mechanism.
It is provided so as to be extendable and contractible via 52, and a reflector mounting portion 53 is provided at both ends. One end of a connecting member 54 is rotatably foldably connected to one end of the reflector mounting member 51 so as to be freely deployable. The connection member 54 is provided so as to be able to expand and contract in the axial direction via an expansion mechanism 55, and a power supply unit mounting member 56 is rotatably foldably connected to the other end thereof. The feeder mounting member 56 is provided with a rotatable middle portion, and a power feeder mount 57 is detachably attached to the reflecting mirror mounting member 51 at the distal end thereof. The power supply section 90 is detachably attached to the power supply section mounting section 57.

The support base 50 is expanded and folded as shown in FIGS. 7A to 7D. When the support base 50 is folded and accommodated from the expanded state, first, the power supply unit mounting member 56 is rotated. , And the intermediate portion thereof is rotated to be opposed to the reflector attaching member 51 and the connecting member 54. Next, the reflector mounting member 51 and the connecting member 54 are reduced via the telescopic mechanisms 52 and 55, respectively, as shown in FIG. 7D, and the folding is completed here. When the support thus folded is to be unfolded again, the procedure shown in FIGS. 7 (d) to 7 (a), which is substantially the reverse of the above procedure, is performed. The telescopic mechanisms 52 and 55 have substantially the same configuration as the telescopic mechanism shown in FIG. 3, and a detailed description thereof will be omitted.

The reflecting mirror 70 is formed by, for example, first to sixth divided bodies 71 to 76 divided into six, and the first to sixth divided bodies 71 to 76 are formed as shown in FIG. Are connected to each other via a connection mechanism 77 having substantially the same configuration to form a mirror surface. That is, as shown in FIGS. 9 and 10, the first to sixth divided bodies 71 to 76 have first and second couplings forming pairs at mutually opposing positions. Part 7
8,79 are each formed. A fitting hole 78a is formed in the first coupling portion 78, and a lock member 78b is provided corresponding to the fitting hole 78a so as to freely enter and exit in the directions of arrows B and C. On the other hand, the fitting portion 79a of the second connecting portion 79 is
The fitting portion 7 is formed so as to protrude corresponding to the fitting hole 78a.
An insertion hole 79b is formed in 9a. The fitting portion 79a of the second coupling portion 79 is fitted into the fitting hole 78a of the first coupling portion 78, and the insertion hole 79b of the fitting portion 79a of the second coupling portion 79 is The coupling member 80 is inserted. This coupling member 80
For example, a screw portion 80a is formed at one end, and a driving cam lever 81 is rotatably attached to the other end. The cam lever 81 is provided with a driving cam 82. The cam 82 moves the connecting member 81 in the direction of arrow D in conjunction with its clockwise and counterclockwise rotation as shown in FIG. A first position X to be urged (indicated by a dashed line in the figure) and a second position Y to urge the coupling member 81 to move in the direction of arrow E
(Shown by a solid line in the figure).

The coupling member 80 is in a state in which the coupling portion 79a of the second coupling portion 79 is coupled and coupled to the coupling hole 78a of the first coupling portion 78, and a washer 83 and a pair of After the springs 84, 84 and the washer 85 are sequentially attached, the spring 84, 84 and the washer 85 are inserted into the insertion hole 79b of the fitting portion 79a of the second coupling portion 79. Next, the connecting member 80
The nut member 86 is screwed onto the screw portion 80a, the nut member 86 is locked by the lock member 78b, and the cam lever 81 is rotatably attached to the other end. Here, when the cam lever 81 is rotated clockwise in FIG. 11,
The cam 82 assumes the first position X as described above,
80 is urged to move in the direction of arrow D against the spring force of the disc springs 84,84. As a result, an axial force is applied to the connecting member 80 by the spring force of the disc springs 84, 84, and the first and second connecting portions 78, 79 are fastened and positioned. Join 76.

When the connected first to sixth divided bodies 71 to 76 are divided, the cam lever 81 is turned counterclockwise. Then, the cam lever 81 takes the second position Y by moving the cam 82 in the direction of the arrow E as described above. As a result, the spring force of the disc springs 84, 84 of the connecting member 81 is reduced, the axial force is reduced, and the fastening of the first and second connecting portions 78, 79 is released. Here, each part of the connecting mechanism 77 is disassembled in a substantially reverse order, and the first to sixth divided bodies 71 to 76 are divided.

Now, the leg 10, the base 30, and the support base configured as described above.
The reflector 50, the reflector 70, and the power supply unit 90 are assembled and disassembled in the following procedure.

That is, the assembling procedure is as follows. First, the first to third legs 12 to 14 of the leg portion 10 are unfolded as shown in FIG. The base 30 developed as described above is attached (see FIG. 2B). At this time, the base 30 is moved up and down by an elevation mechanism 40 for driving the elevation angle adjustment.
(See the figure)), and the elevation angle is roughly adjusted.
Here, the leg portion 10 is set at an approximate level by adjusting the installation portions 12a to 14a of the legs 12 to 14, and thereafter, the support base 50 developed as described above with respect to the base 30 is provided. It is mounted (see FIG. 3C). A power supply section 90 is attached to the support section 50 at a power supply section mounting section 57, and a connection waveguide 91 connected to a transceiver (not shown) is connected to the power supply section 90 (see FIG. )reference). First, the first to fourth divided bodies 71 to 74 joined by using the connecting mechanism 77 as described above are attached to the reflector mounting portion 53 of the reflector mounting member 51. (See (d)). Thereafter, the fifth to sixth divided bodies 75 and 76 are applied to the first to fourth divided bodies 71 to 74.
Are connected (see FIG. 3E). Next, the installation portions 12a to 14a of the legs 12 to 14 of the leg portion 10 are adjusted to perform fine adjustment of the level, and the elevating mechanism 40 of the base 30 is operated, so that the first to the The driving of the fifth link members 33 to 35, 37, and 38 is controlled, and the elevation angle of the reflecting mirror 70 is finely adjusted, and the assembly is completed here.

As described above, the elevation angle adjusting mechanism of the reflecting mirror uses the first to fifth link members 33 to 35, 37, and 38 having different lengths as the base 31.
An upper and lower mechanism, which is arranged so as to be linked in a substantially box shape on the upper side, and is adjustable in expansion and contraction between a substantially central portion of the base 31 and a substantially central portion of a fourth link member 37 disposed substantially parallel to the base 31. The first to fifth link members 33 to 35, 37, 37,
38 is varied, and the elevation angle of the reflecting mirror 70 is variably adjusted. According to this, the reflecting mirror 70 has a variable elevation angle range,
It is greatly variable in comparison with the ascending and descending movement ratio of 40, and can be formed so as to be able to communicate with communication satellites at any place in the world while maintaining the same shape and size as the conventional one.

In the above-described embodiment, in order to apply the present invention to a portable antenna device, the first to fifth link members 33 to 35, 37, and 38 are attached with the reinforcing member 39, and then reflected through the support base 50. Mirror 70
However, the present invention is not limited to this, and when the present invention is applied to a stationary antenna device, for example, the reflecting mirror 70 and the power supply unit 90 are directly disposed on the base 30. It is also possible to configure so that

Further, in the above-described embodiment, the case where the present invention is applied to a portable antenna device has been described. However, the present invention is not limited to this, and the present invention is also applicable to a vehicle-mounted antenna device or a stationary antenna device. The effect can be expected. Therefore, the present invention is not limited to the above-described embodiment, and it goes without saying that various modifications can be made without departing from the spirit of the present invention.

[Effects of the Invention] As described in detail above, according to the present invention, an elevation angle adjustment mechanism of a reflecting mirror is provided so that the configuration can be simplified, downsizing can be ensured, and reliable elevation angle adjustment can be realized. can do.

[Brief description of the drawings]

FIG. 1 is a structural view showing a portable antenna device to which an elevation angle adjusting mechanism of a reflecting mirror according to an embodiment of the present invention is applied.
FIG. 3 is a structural view showing the leg portion of FIG. 1 taken out, and FIG.
FIG. 4 is a structural view showing an elongating mechanism taken out of the base shown in FIG. 1, and FIG. 5 is a structural view showing an elevating mechanism taken out of the base shown in FIG. 1, and FIG. FIG. 6 is a diagram showing the operation, FIG. 6 is a diagram shown for explaining the folding and unfolding operation of the base of FIG. 1, and FIG. 7 is a diagram shown for explaining the folding and unfolding operation of the support base of FIG. , FIG. 8 is a structural view showing the reflecting mirror of FIG. 1 taken out, FIGS. 9 to 11 are drawings for explaining the connecting mechanism of FIG. 8, and FIG. 12 is an assembly of FIG. FIG. 13 is a diagram showing a disassembling operation, and FIG. 13 is a configuration diagram showing a conventional elevation angle adjusting mechanism of a reflecting mirror. 10 leg section, 30 base, 50 support base, 70 reflecting mirror, 90 feeding section, 11 mounting section, 12 to 14 first to third legs, 12a ~ 13a …… Installation section, 15… Expansion mechanism, 12b
... outer cylinder, 12c ... inner cylinder, 12d ... sliding member, 15a ... clamp member, 15b ... operating lever, 15c ... locking part, 31 ...
... Base, 32 ... Mounted part, 33-35 ... First to third link members, 36 ... Link mechanism, 37,38 ... Fourth and fifth link members, 39 ... Reinforcement member, 40 ... Elevating mechanism, 40
a ... jack body, 40b ... handle, 40c ... drive shaft, 51 ... reflector mounting member, 52, 55 ... telescopic mechanism, 53
... Reflecting mirror mounting part, 54... Connecting member, 56... Feeding part mounting member, 57... Feeding part mounting part, 71 to 76... First to sixth divided bodies, 77. ... the first joint,
78a: fitting hole, 78b: locking member, 79: second connecting portion, 79a: fitting portion, 79b: insertion hole, 80: connecting member,
81… Cam lever, 82… Cam, 83,85… Washer, 8
6 ... Nut member, 41 ... Standard scale.

Claims (1)

(57) [Claims] 1. A first to a fifth link members having different lengths, which are linked to a base in a substantially box shape while holding a reflecting mirror, and one end of the link member is rotatable substantially at the center of the base. The first base is supported and the other end is disposed substantially parallel to the base.
An elevation adjusting mechanism for a reflecting mirror, comprising: a vertically movable means vertically rotatably supported at substantially the center of any one of the fifth to fifth link members.