JP3556828B2 - parabolic antenna - Google Patents

Description

[0001]
TECHNICAL 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 a converter can be supported with sufficient strength.
[0002]
[Prior art]
A parabolic antenna generally includes a reflector, a converter, and a converter support arm that supports the converter. Since the parabolic antenna is usually installed outdoors, the following accidents may occur. Since the converter support arm projects forward from below the reflector in order to fix the converter in front of the opening of the reflector, an object may be caught. In particular, in general households, the parabolic antenna is often installed on a veranda, so that laundry, futons, and the like, which are dried on the veranda, are blown off by the wind and may be caught on the converter support arm.
[0003]
Conventionally, the converter support arm is attached to the 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 the converter support arm 4 is connected to the reflector via these screw holes 4c and 4d. Many are configured to be screwed to the antenna base 3 on the back surface 2.
[0004]
[Problems to be solved by the invention]
However, since the parabolic antenna is often installed in a place where an operator cannot secure a scaffold, if the converter support arm must be screwed one by one on site, the operation becomes complicated. In addition, after the installation of the parabolic antenna, the replacement of the converter and the cable also causes a work delay.
[0005]
Further, when trying to fix the converter support arm 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. is there.
[0006]
The present invention has been made in order to solve such a problem, and the converter support arm can be easily attached and detached, the total length of the converter support arm can be reduced, and sufficient strength can be obtained. An object of the present invention is to provide a parabolic antenna having a structure capable of supporting a converter.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, a parabolic antenna according to the present invention has a converter support arm having a converter mounted at one end, and a mounting portion protruding outward from the other end of the converter support arm, is inserted into a receptacle provided on the antenna base, A parabolic antenna configured to attach a converter support arm to an antenna base, wherein the attachment portion is provided with a convex portion, and inside the receptacle, a fitting hole into which the convex portion is fitted is provided. The projection is formed so as to protrude in a direction orthogonal to a longitudinal axis of the mounting portion, and further, the receiving port is fixed to a state in which the projection of the mounting portion is fitted in a fitting hole. and locking mechanism that can be released is provided with, as the shoulder portion of the upper end and the mounting portion of the convex portion is located on an extension of the upper surface of the socket, the converter supported When the arm is tilted, and the mounting portion is inserted into the receptacle in this state, and the converter support arm is rotated around the shoulder portion, the convex portion fits into the fitting hole, and the step portion of the mounting portion is formed. And the step portion of the lock mechanism are engaged with each other, whereby downward rotation of the distal end portion around the shoulder portion is suppressed, and the convex portion is locked in the fitted state in the fitting hole. It is characterized by being constituted so that.
[0008]
The locking mechanism includes a plate-like member formed so as to extend from a surface on which the fitting hole is formed to a surface on the opposite side in a deep portion of the receiving hole. It is preferable that a step having a surface facing the surface is provided.
[0009]
Further, it is preferable that 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. It is possible to realize a parabolic antenna in which the arm can be easily attached to the antenna base with sufficient strength, and the arm can be easily removed.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
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.
[0011]
Reference numeral 4 denotes a converter support arm. The converter 5 is attached to one end of the main body 4a, and an attachment portion 4b is 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. Can be done.
[0012]
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 protruding portions 11, 11 protruding in the direction orthogonal to the longitudinal axis G of the mounting portion 4b are provided at the distal end portion 21 of the mounting portion 4b, and are provided on the opposite surface. Is provided with a stepped 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.
[0013]
An arc-shaped portion 13 is formed on a surface of the mounting portion 4b on the same side as the step portion 12 (the lower surface 24 in the present embodiment) and adjacent to the main body 4a of the converter support arm 4. I have. The arc-shaped portion 13 has, as a central axis, a shoulder 14 of the mounting portion 4b where the surface on the same side as the convex portion 11 of the mounting portion 4b (the upper surface 23 in the present embodiment) and the main body 4a are connected. It has an arc shape.
[0014]
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, and fitting holes 17, 17 are provided in the upper surface 19. Further, 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 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.
[0015]
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 (a), the converter support arm 4 is slightly inclined so that the upper end of the convex portion 11 and the shoulder portion 14 of the converter support arm 4 are located on the extension of the upper surface 19 of the receptacle 15.
[0016]
The mounting portion 4b has a height H from the lower end of the step portion 12 to the upper end of the convex portion 11 smaller than the height J from the lower surface 25 to the upper surface 19 of the receptacle 15 in such a state of being inclined. As shown in (b), the mounting portion 4b can be inserted into the receptacle 15 while the converter support arm 4 is inclined.
[0017]
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 is connected only to the upper surface 19. As a result, the lock mechanism 16 bends and its lower part is pushed outward.
[0018]
In addition, the height K from the lower end of the arcuate portion 13 to the shoulder portion 14 in a state where the mounting portion 4b is inclined is set to be substantially equal to the height J from the lower surface 25 to the upper surface 19 of the receptacle 15. When the mounting portion 4b is inserted until the distal end portion 21 abuts on the lock mechanism 16 at the back of the receiving port 15 as shown in FIG. The lower end of the arcuate portion 13 comes into contact with the lower surface 25 of the receptacle 15.
[0019]
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, the projection 11 of the mounting portion 4b is formed as shown in FIG. The fitting portion 17 is formed in the fitting hole 17 formed in the upper surface 19 of the receiving port 15, and the step portion 12 of the mounting portion 4b and the step portion 18 of the lock mechanism 16 are engaged.
[0020]
Note that, as described above, the arc-shaped portion 13 is formed in an arc shape with the shoulder portion 14 as a central axis. Therefore, when the converter support arm 4 is rotated about the shoulder portion 14 of the mounting portion 4b as an axis. Serves to always press the shoulder 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 14 and the arc-shaped portion 13 are connected to the socket 14. 15 can fit into each of the upper surface 19 and the lower surface 25 without any gap, thereby ensuring a stable mounting state.
[0021]
Once the converter support arm 4 is once attached to the antenna base 3 in this manner, since the convex portion 11 of the attachment portion 4b is fitted in the fitting hole 17 of the receiving port 15, the converter support arm 4 is configured as shown in FIG. The movement in the direction of arrow R shown in c) is restricted. Further, by engaging the step 12 of the mounting portion 4b with the step 18 of the lock mechanism 16, the engaging surface 22 of the step 12 and the opposing surface 26 of the step 18 abut, and the shoulder 14 is moved. The downward rotation of the distal end portion 21 about the center is suppressed, and the projection 11 is locked in a state fitted in the fitting hole 17. In this way, converter support arm 4 can be securely attached to antenna base 3.
[0022]
On the other hand, when removing the converter support arm 4 from the antenna base 3, the knob 20 is pulled in the direction of arrow L shown in FIG. In this state, the engagement of the projection 11 with the fitting hole 17 can be released, and the converter support arm 4 is inclined as shown in FIG. 5B. Thus, the mounting portion 4b can be pulled out from the receptacle 15.
[0023]
【The invention's effect】
As described above, according to the parabolic antenna of the present invention, the converter support arm can be easily attached to the antenna base with one touch and with sufficient strength, and can be easily removed with one touch. Can be.
[0024]
Further, unlike the conventional parabolic antenna, the parabolic antenna of the present invention does not need to extend the mounting portion of the converter support arm to the back surface of the reflector, and has a shorter overall length of the converter support arm than the conventional one. can do.
[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.
4 is a diagram showing an internal structure of a receiving port 15 of the antenna base 3 shown in FIG.
5 is an explanatory diagram 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.
[Explanation of symbols]
1. Parabolic antenna,
2. Reflector,
3 ... antenna base,
4 ... Converter support arm,
4a ... body,
4b: mounting part,
4c, 4d: screw holes,
5 ... Converter,
11 ... convex part,
12 ... step,
13 ... arc-shaped part,
14 ... shoulder,
15 ... receptacle,
16: Lock mechanism,
17 ... fitting hole,
18 ... step,
19 ... top of the receptacle,
20 ... knob,
21 ... Tip,
22 ... engagement surface,
23 ... upper surface of the mounting part,
24 ... lower surface of the mounting part,
25 ... lower surface of the receptacle,
26: Opposing surface

Claims (2)

A parabolic antenna configured to attach the converter support arm to the antenna base by inserting a mounting portion protruding outward from the other end of the converter support arm having a converter attached to one end into a receptacle provided on the antenna base. And
The receptacle is configured to open toward the front of the reflector below the antenna base,
The mounting portion is provided with a convex portion,
Inside the receptacle, a fitting hole into which the convex portion fits is provided,
The projecting portion is formed by projecting in a direction perpendicular to a longitudinal axis of the mounting portion,
Further, the receiving port is provided with a lock mechanism capable of fixing and releasing a state in which the convex portion of the mounting portion is fitted in the fitting hole ,
The converter support arm is inclined so that the upper end of the projection and the shoulder of the mounting portion are located on an extension of the upper surface of the receiving port, and in this state, the mounting portion is inserted into the receiving port, and the shoulder is pivoted. When the converter support arm is rotated as described above, the convex portion fits into the fitting hole, and the step portion of the mounting portion and the step portion of the lock mechanism engage, whereby the shoulder portion is centered. The parabolic antenna is characterized in that a downward rotation of the leading end is suppressed, and the projection is locked in a state fitted in the fitting hole . A surface opposite to the surface where the convex portions are formed, a portion adjacent to the body of the converter support arms, characterized in that the arcuate portion is formed, parabolic according to claim 1 antenna.

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