JP2008131548A - Antenna mounting fixture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an antenna mounting fixture with superior ruggedness and strength larger than a conventional one. <P>SOLUTION: The antenna mounting fixture includes: a pole 1, which has a T-shaped elbow 2 fixed to a predetermined position and has a lower portion 1c than the T-shaped elbow 2 bent from which to a branched direction of the T-shaped elbow 2; an L-shaped elbow 3 having an end portion 3a mounted in a sliding state on an arm 2a extended from the branched portion of the T-shaped elbow 2 and having an arm 3c on the other end portion 3b in a way that the arm 3c extends opposite to the end portion of a bending portion 1c of the pole 1; pinching boards 1d, 3d formed at an end portion of a bending portion 1c of the pole 1 and at an end portion of the arm 3c of the L-shaped elbow 3; and an energizing means 4 for applying force so that T-shaped elbow 2 and the L-shaped elbow 3 may be brought close with each other. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an antenna attachment used for attaching a parabolic antenna or the like to a balcony (veranda) or a parapet provided on a rooftop.

In installing a parabolic antenna for satellite broadcasting reception on a parapet (chest wall, handrail wall) such as a balcony in a general house, antenna mounting tools as shown in Patent Documents 1 and 2 are widely used. This antenna fixture can adjust the interval between the arm holding body and the clamping plate provided at each end of the arm body by sliding the arm body held by the arm holding body by the rotation of the bolt. The structure is such that the attachment is performed by sandwiching the parapet with these clamping plates.
JP 2002-374109 A JP 2003-264409 A

  The conventional antenna fixture has a structure in which a pole for fixing an antenna, an arm holding body provided with a sandwiching plate, and an arm body (arm portion) are separated, and a mechanism for adjusting the spacing between the sandwiching plates The arm body for providing a rectangular pipe shape.

  The antenna mounting device receives a large force when the parabolic antenna is blown by a strong wind, but is required to have durability to withstand this and accurately maintain the direction of the antenna. However, if the pole and the arm part are completely separate, the joint part is fragile, and if the arm body is in the shape of a square pipe, the bent part is fragile. It has become.

  In view of this point, the present invention proposes an antenna fixture that is stronger and more durable than conventional ones.

  An antenna fixture according to the present invention includes a pole having a T-shaped elbow fixed to a predetermined portion and a lower portion bent from the T-shaped elbow in a branching direction of the T-shaped elbow, and a branching portion of the T-shaped elbow. An L-shaped elbow having one end slidably mounted on the extended arm and having an arm at the other end extending so as to face the distal end of the bent portion of the pole, the distal end of the bent portion of the pole, and the L-shaped elbow It is characterized by including a holding plate provided at the tip of the arm, and a biasing means for biasing the T-shaped elbow and the L-shaped elbow so as to approach each other.

  According to the antenna fixture of the present invention, since the pole for fixing the antenna is bent to have an integral structure for supporting one of the clamping plates, the arm portion provided with the clamping plate as described above has a separate structure from the pole. Compared with the conventional technology, the strength is improved. Furthermore, since the antenna fixing pole generally has a circular cross section, the strength is higher than when the holding plate is supported by a square pipe or a plate-like member.

  In addition, the arm portion where the clamping plate is provided is composed of a combination of a T-shaped elbow and an L-shaped elbow, and has a structure that does not have a bent portion in the shape of a square pipe as in the prior art. ing. In addition, since the T-shaped elbow and its arm and the L-shaped elbow and its arm can all have a circular cross section (including a perfect circle, an ellipse, and an ellipse), the strength is also improved in this respect.

  Therefore, it is possible to provide an antenna fixture that is stronger and more durable than conventional products.

  1 to 3 show a preferred embodiment of the present invention.

  The pole 1 in the antenna fixture of the present embodiment is a pipe having a true circular cross section, and the upper end surface thereof is sealed with a resin cap 1a. In this pole 1, a straight portion 1b having a sufficient length for mounting the parabona antenna is secured, and for example, a T-shaped elbow 2 is fixed to a portion about 250 mm from the upper end by welding. Then, the lower portion 1c of the pole 1 from the T-shaped elbow 2 is bent by approximately 90 ° with a predetermined R in the branching direction of the T-shaped elbow 2 (the direction in which the branching portion extends). A sandwiching plate 1d for sandwiching a parapet such as a balcony is welded to the tip of the curved portion 1c. The clamping surface of the clamping plate 1d is covered with a rubber plate 1e having irregularities formed on the surface.

  In this way, the pole 1 having a circular cross section is curved so as to support the sandwiching plate 1d, so that the arm portion provided with the sandwiching plate is separate from the pole as in the prior art. The mounting strength is improved because there is no joint part. Furthermore, since a pipe having a circular cross section has a higher strength than a square pipe or a plate-like member, the present structure in which the holding plate 1d is supported by the pole 1 has a higher strength.

  A hollow arm 2a extends straight from the branch portion of the T-shaped elbow 2 for a length necessary for attachment to the parapet, and a screw hole is provided in the distal end surface 2b of the arm 2a. One end 3a of the L-shaped elbow 3 is slidable on the arm 2a. In this embodiment, the arm 2a is mounted so as to be loosely inserted into the cylindrical one end 3a. One end portion 3a of the L-shaped elbow 3 has a length corresponding to the arm 2a, and the arm 2a and the one end portion 3a are telescopically operated to obtain a holding plate interval necessary for attachment to the parapet.

  The other end portion 3b of the L-shaped elbow 3 bent about 90 ° with respect to the one end portion 3a has an arm 3c that is curved and extended so that the tip faces the tip of the curved portion 1c of the pole 1, and the tip of the arm 3c In addition, a sandwiching plate 3d is provided. The sandwiching plate 3d is formed by welding a bearing plate 3e having a U-shaped cross section, and by supporting both ends of the shaft 3f disposed at the distal end portion of the arm 3c with the bearing plate 3e, the sandwiching plate 3d is moved vertically. It is connected so that it can swing. The clamping surface of the clamping plate 3d is also covered with a rubber plate 3g having irregularities formed on the surface.

  As described above, the combination of the T-shaped elbow 2 and the L-shaped elbow 3 allows the structure to have a fragile portion, which is a bent portion of a square pipe shape as in the prior art. The strength of the arm portion for improving is also improved. The T-shaped elbow 2 and its arm 2a, the L-shaped elbow 3 and its arm 3c can all have a circular cross section (including a perfect circle, an ellipse and an ellipse), that is, a cross section having no corners. Even in this respect, the strength is improved as compared with the conventional technique using a square pipe. In the case of this embodiment, the arm 2a, the L-shaped elbow 3 and the arm 3c have an oval (track-like) cross section so as not to rotate with each other.

  In the L-shaped elbow 2, a base hole portion (L-shaped bent portion) of the one end portion 3 a is provided with a through hole for inserting a bolt 4 as an urging means, and the bolt through this through hole 4 is screwed into a screw hole in the tip end surface 2b of the arm 2a in the T-shaped elbow 2, and the head 4a of the bolt 4 is locked to the L-shaped elbow 3 via a locking washer. Therefore, when the parapet is sandwiched between the sandwiching plates 1d and 3d and the bolt 4 is tightened, the T-shaped elbow 2 and the L-shaped elbow 3 are biased toward each other by tightening the bolt 4. The antenna fixture is fixed by biasing the other clamping plate 3d closer to the one clamping plate 1d to clamp the parapet.

  At this time, since the holding plate 3d provided on the arm 3c of the L-shaped elbow 3 can swing up and down, the followability of the holding plate 3d to the parapet shape is improved.

The perspective view which showed embodiment of the antenna fixture which concerns on this invention. The side view of the antenna fixture of FIG. Sectional drawing of the antenna fixture of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pole 1c Curved part 1d Holding plate 2 T-shaped elbow 2a Arm 3 L-shaped elbow 3a One end part 3b Other end part 3c Arm 3d Holding plate 4 Bolt (biasing means)

Claims (2)

A pole in which a T-shaped elbow is fixed to a predetermined portion and a lower portion of the T-shaped elbow is bent in a branching direction of the T-shaped elbow;
An L-shaped elbow having one end slidably attached to an arm extending from the branch portion of the T-shaped elbow and having an arm extended to face the distal end of the curved portion of the pole;
A sandwiching plate provided at the tip of the bent portion of the pole and the arm tip of the L-shaped elbow;
Biasing means for biasing the T-shaped elbow and the L-shaped elbow so as to be close to each other;
An antenna fixture characterized by comprising.   The antenna mounting tool according to claim 1, wherein a clamping plate provided at an arm tip of the L-shaped elbow is swingable in the vertical direction.

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