JPH11298236A - Parabola antenna - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a parabola antenna structured so as to easily attach/detach a converter supporting arm, to shorten a full length as well and to support a converter with sufficient strength. SOLUTION: Concerning a parabola antenna 1 constituted so as to attach a converter supporting arm 4, to which a converter 5 is attached to one end, to an antenna base 3 by inserting an attachment part 4b protruded outward from the other end of the converter supporting arm 4 into a receiving port 15 provided on the antenna base 3, the attachment part 4b is provided with a projecting part 11, a fitting hole for fitting the projecting part 11 is provided in the receiving port 15 and further, the receiving port is equipped with a lock mechanism capable of fixing and canceling the state of fitting the projecting part 11 of the attachment part 4b to the fitting hole.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a parabolic antenna, and more particularly to a parabolic antenna having a structure in which a converter supporting arm can be easily attached and detached and which can support a converter with sufficient strength.

[0002]

2. Description of the Related Art Generally, a parabolic antenna includes a reflector, a converter, and a converter supporting arm for supporting the converter. Since the parabolic antenna is usually installed outdoors, the following accidents may occur. The converter support arm
In order to fix the converter in front of the opening of the reflector, the converter is projected forward from below the reflector, so that an object may be stuck. Particularly in a general household, a parabolic antenna is often installed on a veranda, and therefore, laundry, a futon, or the like, which is dried on the veranda, may be blown off by the wind and may be caught on the converter support arm.

Conventionally, a converter supporting arm has been attached to a reflector with sufficient strength in preparation for such an accident. For example, in the conventional parabolic antenna, as shown in FIG. 6, screw holes 4c and 4d are provided in the mounting portion 4b of the converter support arm 4, and these screw holes 4c and 4d are provided.
c, 4d, the converter supporting arm 4 is
Many are configured to be screwed to the antenna base 3 on the back surface.

[0004]

However, since a parabolic antenna is often installed in a place where a worker cannot secure a scaffold, it is necessary to screw the converter support arm at the site. The work becomes complicated. In addition, after the installation of the parabolic antenna, the replacement of the converter and the cable also causes a work delay.

Further, if the converter support arm is to be fixed on the back surface of the reflector, it is necessary to extend the mounting portion of the converter support arm to the back surface of the reflector, which inevitably increases the total length of the converter support arm. There is a problem.

The present invention has been made in order to solve such a problem, and the converter support arm can be easily attached and detached and the total length of the converter support arm can be reduced as compared with the conventional one described above. An object of the present invention is to provide a parabolic antenna having a structure capable of supporting a converter with high strength.

[0007]

In order to achieve the above-mentioned object, a parabolic antenna according to the present invention has a mounting portion, which protrudes outward from the other end of a converter support arm having a converter mounted on one end, on an antenna base. A parabolic antenna configured to attach a converter support arm to an antenna base by being inserted into a provided receptacle, wherein the attaching portion has a convex portion protruding in a direction orthogonal to a longitudinal axis of the attaching portion. A fitting hole into which the convex portion is fitted is provided inside the receptacle, and further, the state where the convex portion of the mounting portion is fitted to the fitting hole is fixed to the receptacle. A lock mechanism is provided.

[0008] The lock mechanism is provided on a plate-shaped member formed to extend from the surface on which the fitting hole is formed toward the opposite surface at the back of the socket. Preferably, a step having a surface facing the fitting hole is provided.

Preferably, an arc-shaped portion is formed on a surface opposite to the surface on which the convex portion is formed and adjacent to the main body of the converter support arm.
These features make it possible to realize a parabolic antenna in which the converter support arm can be easily and sufficiently attached to the antenna base and can be easily removed.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a parabolic antenna according to the present invention will be described with reference to the drawings. FIG.
1 is a perspective view of a parabolic antenna 1 according to the present invention.
In this figure, reference numeral 2 denotes a reflector, on the back of which an antenna base 3 is attached. Below the antenna base 3, there is provided a receiving port 15 which opens toward the front of the reflector 2.

A converter support arm 4 has a converter 5 attached to one end of a main body 4a and an attachment portion 4b provided at the other end. In this parabolic antenna 1, the converter support arm 4 can be mounted on the antenna base 3 by inserting the mounting portion 4b into the receptacle 15, and the converter 5 is fixed and supported in front of the opening of the reflector 2. Is available.

FIG. 2 is an enlarged perspective view of the mounting portion 4b of the converter support arm 4 shown in FIG. 1, and FIG. 3 is a side view thereof. As is clear from these figures, the distal end portion 21 of the mounting portion 4b is provided with convex portions 11, 11 protruding in a direction orthogonal to the longitudinal axis G of the mounting portion 4b, and is provided on the opposite surface. Is provided with a step portion 12 having a surface (engaging surface) 22 which is a surface orthogonal to the projecting direction of the convex portion 11 and engages with a locking mechanism of a receptacle described later.

An arc-shaped portion 13 is provided on a surface (lower surface 24 in this embodiment) of the mounting portion 4b on the same side as the step portion 12 and adjacent to the main body 4a of the converter support arm 4. Is formed. In addition, this arc-shaped part 13 is
The mounting portion 4b is formed in an arc shape centered on the shoulder 14 of the mounting portion 4b where the surface (the upper surface 23 in the present embodiment) on the same side as the convex portion 11 and the main body 4a are connected.

FIG. 4 is a diagram showing the internal structure of the receptacle 15 of the antenna base 3 shown in FIG. As is clear from this figure, the inside of the receiving port 15 is hollow,
The upper surface 19 is provided with fitting holes 17, 17. In addition, a plate-like member formed so as to extend downward (toward the opposite surface) from the upper surface 19 is provided on the inner side of the receiving port 15 with a surface (opposing surface) 26 facing the fitting hole 17. Is provided with a lock mechanism 16 formed with a step 18 having the following. The lock mechanism 16 is not in contact with a surface other than the upper surface 19 of the receiving port 15 and is formed of a flexible material such as a resin.

FIG. 5 is an explanatory diagram of a procedure for attaching the converter support arm 4 to the antenna base 3. First,
As shown in FIG.
The converter support arm 4 is slightly tilted so that the upper end of 1 and the shoulder 14 are located on the extension of the upper surface 19 of the receptacle 15.

The height H from the lower end of the step portion 12 to the upper end of the convex portion 11 is equal to the height J from the lower surface 25 to the upper surface 19 of the receptacle 15 in the state where the mounting portion 4b is inclined as described above. The mounting portion 4b can be inserted into the receptacle 15 while the converter support arm 4 is tilted, as shown in FIG.

When the mounting portion 4b is inserted until the distal end portion 21 abuts against the lock mechanism 16 at the back of the receptacle 15, the lock mechanism 16 is formed of a flexible material as described above, and the upper surface 19 is formed. , The lock mechanism 16 bends and its lower part is pushed outward.

The height K from the lower end of the arc-shaped portion 13 to the shoulder portion 14 in a state where the mounting portion 4b is inclined.
Is set so as to be substantially equal to the height J from the lower surface 25 to the upper surface 19 of the receptacle 15, (b)
When the mounting portion 4b is inserted until the distal end portion 21 abuts against the lock mechanism 16 at the back of the receptacle 15 as shown in FIG.
The lower end of the arc-shaped portion 13 comes into contact with the lower surface 25 of the receptacle 15.

In this state, when the converter support arm 4 is rotated about the shoulder 14 of the mounting portion 4b so that the converter support arm 4 is horizontal, as shown in FIG. The part 11 fits into the fitting hole 17 formed in the upper surface 19 of the receiving port 15, and the step part 12 of the mounting part 4 b and the step part 18 of the lock mechanism 16 engage.

As described above, since the arc-shaped portion 13 is formed in an arc shape with the shoulder 14 as the center axis, the converter support arm 4 rotates about the shoulder 14 of the mounting portion 4b as an axis. In this case, the shoulder portion 14 serves to always press the shoulder portion 14 against the upper surface 19 of the socket 15, thereby smoothing the rotation of the converter support arm 4, and when the rotation is completed, the shoulder portion 14 and the arc-shaped portion are formed. 13 fits into the space between the upper surface 19 and the lower surface 25 of the receptacle 15 without any gaps, and a stable mounting state can be ensured.

Once the converter support arm 4 is mounted on the antenna base 3 in this manner, the mounting portion 4b
Of the converter support arm 4 is restricted in the direction of the arrow R shown in FIG. 5 (c). The engagement between the step portion 12 of the mounting portion 4b and the step portion 18 of the lock mechanism 16 causes the engagement surface 22 of the step portion 12 and the step portion 18 to engage.
Of the distal end portion 21 about the shoulder portion 14 is suppressed, and the convex portion 11 is fitted into the fitting hole 17.
It will be locked in the state fitted to. In this way, converter support arm 4 can be securely attached to antenna base 3.

On the other hand, when removing the converter support arm 4 from the antenna base 3, the knob 20 is
By pulling in the direction of arrow L shown in (c),
The engagement between the step portion 12 of the mounting portion 4b and the step portion 18 of the lock mechanism 16 is released, whereby the fitting of the projection 11 into the fitting hole 17 can also be released, and FIG. The mounting portion 4b can be pulled out of the receptacle 15 with the converter support arm 4 inclined as shown in FIG.

[0023]

As described above, according to the parabolic antenna of the present invention, the converter support arm can be easily and easily attached to the antenna base with one touch and with sufficient strength. Can be done easily.

Further, unlike the conventional parabolic antenna, the parabolic antenna according to the present invention does not need to extend the mounting portion of the converter supporting arm to the back surface of the reflector, and thus has a shorter overall length of the converter supporting arm than the conventional one. Can be made shorter.

[Brief description of the drawings]

FIG. 1 is a perspective view of a parabolic antenna 1 according to the present invention.

FIG. 2 is an enlarged perspective view of a mounting portion 4b of the converter support arm 4 shown in FIG.

FIG. 3 is a side view of a mounting portion 4b of the converter support arm 4 shown in FIG.

FIG. 4 shows a receiving port 15 of the antenna base 3 shown in FIG.
FIG. 3 is a diagram showing an internal structure of the device.

5 is an explanatory view of a procedure for attaching the converter support arm 4 shown in FIG. 1 to the antenna base 3. FIG.

FIG. 6 is a diagram showing an example of a conventional parabolic antenna 1;

[Description of Signs] 1 ... parabolic antenna, 2 ... reflector, 3 ... antenna base, 4 ... converter support arm, 4a ... body, 4b ... mounting part, 4c, 4d ... screw hole, 5 ... converter, 11 ... convex part Reference numeral 12: stepped portion, 13: arc-shaped portion, 14: shoulder portion, 15: receiving port, 16: locking mechanism, 17: fitting hole, 18: stepped portion, 19: upper surface of the receiving port, 20: knob, 21: tip 22, engagement surface, 23, upper surface of mounting portion, 24, lower surface of mounting portion, 25, lower surface of receptacle, 26, opposing surface

Claims (4)

[Claims] 1. A converter support arm having a converter attached to one end thereof is inserted into a receptacle provided on the antenna base so as to project outward from the other end of the converter support arm, so that the converter support arm is attached to the antenna base. In the parabolic antenna configured as described above, the mounting portion is provided with a convex portion, inside the receiving port is provided a fitting hole for fitting the convex portion, further, the receiving port, A parabolic antenna, comprising: a lock mechanism capable of fixing and releasing a state in which the projection of the mounting portion is fitted in the fitting hole. 2. The method according to claim 1, wherein the projecting portion projects in a direction perpendicular to a longitudinal axis of the mounting portion.
The parabolic antenna according to claim 1. 3. The locking mechanism according to claim 1, further comprising: a plate-shaped member formed to extend from a surface on which the fitting hole is formed toward an opposite surface in a deep portion of the socket. The parabolic antenna according to claim 2, wherein a step having a surface facing the fitting hole is provided. 4. An arc-shaped portion is formed on a surface opposite to the surface on which the convex portion is formed and adjacent to the main body of the converter support arm. 3. The parabolic antenna according to 3.