Antenna mounting bracket

Abstract

The objective is to provide an antenna mounting bracket that simplifies the structure of the bracket and enables easy and quick antenna installation even with a small number of workers. [Solution] An antenna mounting bracket 10 for installing an antenna 110 using an existing structure 100 as a support member, comprising: a base 20 fixed to the existing structure 100; a fixing plate 32 bolted to the base 20; an arm 30 having a protruding portion 34 with the fixing plate 32 as the base point; and a mounting base 40 fixed to the tip of the protruding portion 34, on which the antenna 110 can be installed, wherein the fixing plate 32 is equipped with a suspension hook 36 that can be positioned relative to the base 20.

Description

Technical Field

[0001] The present invention relates to a mounting fitting, and particularly to an antenna mounting fitting suitable for appropriately and simply installing equipment (such as an antenna etc.) with a defined installation angle, azimuth, etc.

Background Art

[0002] As fittings used when attaching an antenna to a support (existing structure) such as a utility pole, those disclosed in Patent Document 1 and those shown in FIG. 11 are known. The fitting disclosed in Patent Document 1 arranges a pair of fittings in the vertical direction of the support and supports the antenna by this pair of fittings. Each fitting is divided into a plurality of parts and enables changing the amount of overhang from the support. When attaching the antenna, by making the overhang amounts of the fittings arranged above and below the support different respectively, adjustment of the attachment angle of the antenna becomes possible.

[0003] With a mounting fitting having such a configuration, it becomes possible to attach the antenna in a state with proper angling. However, the fitting disclosed in Patent Document 1 has a large number of parts and a complicated structure. Also, for horizontal angling (for determining the direction of the antenna), since a structure is adopted in which a load is applied to the plate surface of a flat plate on a horizontal support member, when the antenna is a heavy object, strength problems may also occur.

[0004] The antenna mounting bracket 1 shown in Figure 11 also has the same configuration of placing brackets 2 above and below the existing support column 7, but its versatility is improved by using adjustable bands 3 to fix the brackets 2. Furthermore, the structure of the brackets 2 placed above and below is the same, and the two brackets 2 are connected by a vertically positioned bracket 4. The angle of the antenna is adjusted by adjusting the angle of the mounting base 6, which is placed on top of the vertical bracket 5 located at the tip. In this configuration, both the horizontal and vertical support members of the antenna mounting bracket 1 are made of steel pipes, and the mounting base 6 is used to adjust both horizontal and vertical angles. Therefore, even if the antenna is heavy, it can be stably supported.

[0005] However, regardless of the antenna mounting bracket used, it is necessary to fix the bracket to the support pole in two places and connect the two points. Furthermore, in the case of antenna mounting bracket 1 shown in Figure 11, the bracket itself is heavy due to its increased strength. For this reason, at least two workers are generally required to install the antenna (install antenna mounting bracket 1). [Prior art documents] [Patent Documents]

[0006] [Patent Document 1] Japanese Patent Publication No. 2012-34088 [Overview of the project] [Problems that the invention aims to solve]

[0007] Therefore, the present invention aims to provide an antenna mounting bracket that simplifies the structure of the bracket and enables antenna installation to be performed easily and quickly even with a small number of workers. [Means for solving the problem]

[0008] The antenna mounting bracket according to the present invention for achieving the above objective is an antenna mounting bracket for installing an antenna using an existing structure as a support member, comprising: a base fixed to the existing structure; a fixing plate bolted to the base; an arm having a projection based on the fixing plate; and a mounting base fixed to the tip of the projection, on which the antenna can be installed, wherein the fixing plate is equipped with a suspension hook that can be positioned relative to the base.

[0009] Furthermore, in an antenna mounting bracket having the above-described features, the base can be fixed via a flexible band that wraps around a part of the support member. This feature allows for flexibility in the thickness of the support member to be installed.

[0010] Furthermore, in an antenna mounting bracket having the above-described features, the base can also be configured to be fixed via a bracket that clamps a part of the support member. Having such features makes it possible to install the bracket regardless of the shape of the support member.

[0011] Furthermore, in an antenna mounting bracket having the above-described features, it is desirable that the protruding portion consists of a horizontal portion and a vertical portion, and that the base has a horizontal adjustment mechanism and a vertical adjustment mechanism. With these features, it becomes possible to install the antenna at the desired angle even if the support member is tilted. [Effects of the Invention]

[0012] The antenna mounting bracket, possessing the features described above, allows for a simplified bracket structure. Furthermore, it enables simple and rapid antenna installation even with a small number of workers. [Brief explanation of the drawing]

[0013] [Figure 1] This is a side view showing the antenna mounting bracket in use according to the basic embodiment. [Figure 2] This is a three-view drawing showing the configuration of the base of the antenna mounting bracket according to the basic embodiment, where (A) is a plan view, (B) is a side view, and (C) is a front view. [Figure 3] These are three-view drawings showing the configuration of the arm according to the basic embodiment, where (A) is a top view, (B) is a side view, and (C) is a rear view. [Figure 4] This is a three-view drawing showing the configuration of the mounting base for the antenna mounting bracket according to the basic embodiment, where (A) is a plan view, (B) is a side view, and (C) is a front view. [Figure 5] These are two-view drawings showing the configuration of the support for the antenna mounting bracket according to the basic embodiment, where (A) is a side view and (B) is a bottom view. [Figure 6] This is a side view showing the antenna mounting bracket with the support attached to the mounting base according to the basic embodiment. [Figure 7] This is a diagram illustrating the installation method of the antenna mounting bracket according to the basic embodiment. [Figure 8] This is a side view showing the configuration of an antenna mounting bracket for an application. [Figure 9] This is a two-view drawing showing the base configuration related to the application form, where (A) is a top view and (B) is a side view. [Figure 10] These are three-view drawings showing the configuration of the base body related to the application form, where (A) is a front view, (B) is a side view, and (C) is a top view. [Figure 11] This is a side view showing the configuration of a conventional antenna mounting bracket. [Modes for carrying out the invention]

[0014] Hereinafter, embodiments relating to the antenna mounting bracket of the present invention will be described in detail with reference to the drawings. The embodiments shown below are some of the preferred forms for carrying out the present invention, and even if some of the configuration is changed, it can still be considered part of the present invention, as long as the effects are achieved.

[0015] [Basic form: configuration] First, referring to FIGS. 1 to 6, the basic form of the antenna mounting bracket of the present invention will be described. In the drawings, FIG. 1 is a side view showing the usage state of the antenna mounting bracket according to the basic embodiment. FIG. 2 is a three-view drawing showing the configuration of the base of the antenna mounting bracket according to the basic embodiment, FIG. 3 is a three-view drawing showing the configuration of the arm, and FIG. 4 is a three-view drawing showing the configuration of the mounting table. FIG. 5 is a two-view drawing showing the configuration of the support, and FIG. 6 is a side view showing the state where the mounting table and the support are joined. In the present embodiment, the case where the existing structure 100 as a support member is a vertical column (mainly cylindrical) such as a utility pole will be described as an example.

[0016] The antenna mounting bracket 10 according to the present embodiment is basically composed of a base 20, an arm 30, and a mounting table 40. The base 20 is an element directly fixed to the existing structure 100. The specific structure is composed of an arm fixing surface 22 and a contact leg portion 24. The arm fixing surface 22 is a portion for fixing the fixing plate 32 of the arm 30, which will be described in detail later. A through hole 22a for fixing is provided in the flat mounting surface (arm fixing surface 22). The contact leg portion 24 is a portion that contacts the existing structure 100 and is a bent piece provided at both ends in the width direction of the arm fixing surface 22.

[0017] The contact leg portion 24 is bent at approximately 90 degrees with the arm fixing surface 22 as a base point, and the base 20 is formed in a U shape as a whole. When the base 20 is in such a form, the arc portion of the existing structure 100 facing the arm fixing surface 22 can be avoided by the height of the contact leg portion 24 (the length from the arm fixing surface 22 to the tip of the contact leg portion 24). Further, the side located at the tip of the contact leg portion 24 contacts and positions along the longitudinal direction of the existing structure 100 (the vertical direction in FIG. 1). Therefore, even if the existing structure 100 is cylindrical, it is possible to stably fix the base 20.

[0018] Multiple band-through holes 24a are provided along the edge of the tip of the contact leg portion 24. The band-through holes 24a are elements for inserting the adjustable band 50 for fixing the base 20 to the existing structure 100. For this reason, the opening shape of the band-through holes 24a should be a rectangular hole corresponding to the width of the adjustable band 50.

[0019] The arm 30 is an element for supporting the mounting base 40, which will be described in detail later, at a distance from the existing structure 100. The antenna 110 to be mounted on the mounting base 40 has a specified orientation and angle. Therefore, by providing the arm 30, the degree of freedom for adjusting the orientation of the mounting base 40 can be increased. The arm 30 has a fixing plate 32 and a protruding part 34. The fixing plate 32 is a flat plate that is fixed to the arm fixing surface 22 which constitutes the base 20. Therefore, the fixing plate 32 has through holes 32a at positions corresponding to the through holes 22a provided in the arm fixing surface 22. In addition, a suspension hook 36 is provided at the upper end of the fixing plate 32. The suspension hook 36 is an element for temporarily fixing and positioning the arm 30 relative to the base 20. Therefore, by hooking the suspension hook 36 onto the plate surface of the arm fixing surface 22, it is possible to support the arm 30 on the base 20 before bolt fixing.

[0020] This configuration allows for the separation of the arm 30 and base 20, reducing the weight of individual components, and also enables temporary fixing using the suspension hook 36. Therefore, even if only one person is installing the antenna 110, it becomes easy to fix the base 20 and arm 30.

[0021] The protruding portion 34 has a horizontal portion 34a and a vertical portion 34b. The horizontal portion 34a is a part that protrudes vertically from the plate surface with the fixing plate 32 as the base point, and extends horizontally when the arm 30 is fixed to the base 20. The vertical portion 34b is a part located at the tip of the horizontal portion 34a, and when the arm 30 is fixed to the base 20, it extends upward and is formed to be perpendicular to the ground. That is, the horizontal portion 34a and the vertical portion 34b are formed to form an L shape. In this embodiment, the horizontal portion 34a and the vertical portion 34b are each made of cylindrical steel pipes. Therefore, even relatively thin-walled members can maintain high strength. In this embodiment, a rib 38 is provided between the portion located on the lower side of the horizontal portion 34a and the fixing plate 32 when the arm is fixed to the base 20, in order to improve the strength of the arm 30. Furthermore, through holes 38a are provided in the plate surface of the rib 38, allowing hooks, shackles, carabiners, etc., to be engaged. This configuration makes it possible to rig the arm 30 by itself and lift it to the working position. This eliminates the need for lifting bags, etc., and also reduces the risk of the arm falling during lifting.

[0022] The mounting base 40 is a platform on which the antenna 110 to be installed is placed. A support 46 is attached to the mounting base 40 and fixed to the arm 30 via this support 46. The support 46 consists of a cylindrical shaft portion 46a and a flat joint portion 46b. By placing the shaft portion 46a over the vertical portion 34b of the arm 30, the mounting base 40 can be rotated around the axis of the vertical portion 34b while being positioned and fixed. The shaft portion 46a is provided with multiple (three in the example shown in Figure 5) through holes and nuts 46c fixed to these through holes. By screwing a bolt into these nuts 46c and bringing the tip of the bolt into contact with the vertical portion 34b, the orientation of the mounting base 40, which can rotate around the axis of the vertical portion 34b, can be fixed. The joint portion 46b is a flat plate provided at the end of the shaft portion 46a (the end located at the top when attached to the arm 30), and is responsible for attaching the mounting base 40.

[0023] The mounting base 40 comprises a base surface 42 and a mounting surface 44. The base surface 42 is the part that is joined to the joint 46b of the support 46. The mounting surface 44 is the surface for attaching the antenna 110. In this embodiment, the mounting surface 44 is configured to have an inclination of a predetermined angle (a recommended angle for the installation of the antenna 110) with respect to the base surface 42. By using a mounting base 40 with such a configuration, it becomes possible to orient the antenna 110 in any direction while maintaining the predetermined angle of the antenna 110. Note that the specific form of the base surface 42 and the mounting surface 44 is not limited as long as they can perform their respective functions. In this embodiment, the base surface 42 is provided with a through hole 42b into which hooks, shackles, carabiners, etc., can be engaged. With this configuration, similar to the arm 30, the mounting base 40 can be lifted by itself and pulled up to the work position. This eliminates the need for bags for lifting and reduces the risk of dropping during lifting.

[0024] [Effect] Next, with reference to Figure 7, the installation method of the antenna mounting bracket 10 according to this embodiment will be described. When installing the antenna mounting bracket 10 with the above configuration, first, the base 20 is placed at an arbitrary position on the existing structure 100, and the flexible band 50, which has been inserted through the band through hole 24a, is wrapped around the existing structure 100 and then tightened. This allows the base 20 to be fixed to the existing structure 100 (see Figure 7(A)).

[0025] Next, the arm 30 is temporarily fixed by hooking the suspension hook 36, which is provided on the fixing plate 32 of the arm 30, onto the upper part of the arm fixing surface 22. This transfers the support load of the arm 30 from the worker's hands to the base 20, allowing the worker to perform the bolt tightening work with both hands, even if working alone. After temporarily fixing the arm 30, the fixing plate 32 is bolted to the arm mounting surface 22 (see Figure 7(B)).

[0026] Next, the mounting base 40 with the support 46 attached is placed on the vertical portion 34b of the protruding portion 34 that constitutes the arm 30, and the mounting surface is oriented in any direction. Then, the mounting base 40 is fixed by screwing a tightening bolt into the nut provided on the shaft portion 46a (see Figures 7(C) and (D)).

[0027] [effect] With this configuration of antenna mounting bracket 10, it is possible to support the antenna 110 with a single bracket, simplifying the structure of the bracket. Furthermore, by dividing the components, the weight of each component is reduced, and when bolting, the already fixed components (base 20 and arm 30) can support the components involved in the joint. Therefore, even with a small number of workers, it is possible to easily and quickly install the antenna mounting bracket 10 and attach the antenna 110.

[0028] [Application Forms] Next, the application forms of the antenna mounting bracket of the present invention will be described with reference to Figures 8 to 10. Note that the antenna mounting bracket 10A according to this embodiment and the antenna mounting bracket 10 according to the basic embodiment described above have almost identical components. Therefore, the same reference numerals are used for parts with the same components, and detailed explanations will be omitted.

[0029] The antenna mounting bracket 10A according to this embodiment and the antenna mounting bracket 10 according to the basic embodiment differ mainly in the configuration of the base 20A. This is due to the difference in the form of the existing structure 100 to which the antenna mounting bracket 10A is fixed. Specifically, in the basic embodiment, the existing structure 100 is a cylindrical object that is installed vertically, such as a utility pole, whereas in this embodiment, the existing structure 100 is assumed to be an angle-shaped member that is installed with an incline, such as the base of a steel tower.

[0030] The base 20A of the antenna mounting bracket 10A according to this embodiment consists of a clamping portion 26 and a base body 28. The clamping portion 26 is an element that plays a role in positioning the base 20A by clamping a part of the existing structure 100. The clamping portion 26 only needs to be equipped with a plurality of steel members and a support plate 26a for supporting the base body 28. Here, the specific form of the steel members is not limited as long as they can be adapted to the shape of the existing structure 100 and clamp the existing structure 100.

[0031] In this embodiment, since the existing structure 100 is an L-shaped angle member, the following members are used as steel members. Specifically, there are two L-shaped brackets: a ribbed L-shaped bracket 26b and a long and short L-shaped bracket 26c. The ribbed L-shaped bracket 26b is a steel member that abuts against the inside of the angle member of the existing structure 100, and each side constituting the L is at least longer than the side of the angle member. The long and short L-shaped bracket 26c is positioned with its long side facing one side of the ribbed L-shaped bracket 26b and plays the role of clamping one side of the angle member. For this reason, the long side of the long and short L-shaped bracket 26c is at least the same length as the opposing side of the ribbed L-shaped bracket 26b.

[0032] In the clamping portion 26 of this embodiment, a support plate 26a is positioned opposite the other side of the ribbed L-shaped bracket 26b. The support plate 26a is a flat plate that clamps the other side of the angle material, which is the existing structure 100, between itself and the other side of the ribbed L-shaped bracket 26b, and fastens the short side of the long and short L-shaped brackets 26c. By clamping the existing structure 100 with the two L-shaped brackets and one plate in this way, it becomes possible to securely clamp the existing structure 100 even if it is an angle material. Here, the support plate 26a has a protruding piece on the extension of the fastening portion with the long and short L-shaped brackets 26c, and the base body 28 is engaged with this protruding piece. In this embodiment, as an example, the ribbed L-shaped bracket 26b and the long and short L-shaped brackets 26c are shown as being made of steel, but the members constituting the L-shaped brackets and support plate 26a do not have to be made of steel (metal) as long as they are members that have sufficient strength for clamping.

[0033] In this embodiment, the clamping portions 26 described above are arranged at two locations, above and below the existing structure 100, and the base body 28 is supported by the two clamping portions 26. This configuration allows for stable support of the base body 28 while also enabling adjustment of the fixing angle.

[0034] The base body 28 has an arm fixing surface 22 and an angle adjustment surface 23. The arm fixing surface 22 is an element for fixing the fixing plate 32 that constitutes the arm 30, similar to the arm fixing surface 22 in the basic embodiment. The difference is that the arm fixing surface 22 in this embodiment is configured to allow the fixing plate 32 to rotate along the plate surface. Specifically, the through hole 22a through which the bolt is inserted is an arc-shaped eye socket. The eye socket is provided on the circumference of a circle (so-called PCD) with the center of the bolt pitch as the base point. This configuration makes it possible to correct the inclination of the clamping portion 26 in a certain direction (for example, the X-axis direction).

[0035] Furthermore, the upper part of the arm fixing surface 22 is provided with a notch 22b for hooking the suspension hook 36 provided on the fixing plate 32. The bottom of the notch 22b is configured to have an inclination angle θ that matches the rotation angle θ of the fixing plate 32, with the horizontal position as the base point. This configuration makes it possible to rotate the fixing plate 32 while maintaining the function of the suspension hook 36.

[0036] The angle adjustment surface 23 is a part used to adjust the angle when the clamping portion 26 is fixed in an inclined position in a certain direction (for example, the Z-axis direction), and is an element for positioning the horizontal portion 34a of the protruding portion 34 that constitutes the arm 30 horizontally. Specifically, it is configured to have a through hole 23a for inserting a bolt that serves as the base point, and a slit hole 23b for rotating the base body around the base point. With this configuration, even if the existing structure is inclined not only in one axis direction but also in two axis directions, it is possible to keep the vertical portion 34b of the protruding portion 34 perpendicular to the ground.

[0037] [effect] As described above, the antenna mounting bracket 10A according to this embodiment can be installed regardless of the form of the existing structure 100. Furthermore, even if the existing structure 100 has a two-axis inclination, the vertical part 24b supporting the mounting base 40 can be adjusted to remain perpendicular to the ground. Moreover, with this configuration, the antenna mounting bracket 10A can be installed without interfering with sky rock rails or step bolts (neither of which are shown) provided on the tower or the like. Therefore, the installation position of the antenna mounting bracket 10A is not limited. Thus, it can be installed quickly even during maintenance work in the event of a disaster. [Industrial applicability]

[0038] In the above embodiment, the base 20 (20A), arm 30, and mounting base 40 were described as a set forming one antenna mounting bracket 10 (10A). However, the mounting base 40 in the above embodiment can also be mounted on a power supply box (not shown) or the like by itself. Furthermore, when mounting the mounting base 40 by itself, the square hole 42a provided on the side can be used. Specifically, a flexible band or the like can be inserted through the square hole 42a to secure it to the object on which it is mounted. [Explanation of Symbols]

[0039] 10, 10A………Antenna mounting bracket, 20, 20A………Base, 22………Arm fixing surface, 22a………Through hole, 22b………Notch, 23………Angle adjustment surface, 23a………Through hole, 23b………Eye socket hole, 24………Contact leg part, 24a………Band pass-through hole, 26………Clamping part, 26a………Support plate, 26b………Ribbed L-shaped bracket, 26c………Long and short L-shaped brackets, 28………Base body, 30 ………Arm, 32…Fixing plate, 32a…Through hole, 34…Protruding part, 34a…Horizontal part, 34b…Vertical part, 36…Suspension hook, 38…Rib, 40…Mounting base, 42…Base surface, 42a…Square hole, 44…Mounting surface, 46…Support, 46a…Shaft part, 46b…Joint part, 46c…Nut, 50…Adjustable band, 100…Existing structure, 110…Antenna.

Claims

1. An antenna mounting bracket for installing an antenna using an existing structure as a support member, A base fixed to the aforementioned existing structure, A fixing plate bolted to the base, and an arm having a protruding portion with respect to the fixing plate as the base point, It has a mounting base fixed to the tip of the protruding part, on which the antenna can be installed, The fixing plate is equipped with a suspension hook that can be positioned relative to the base, The antenna mounting bracket is characterized in that the base is fixed via a flexible band that is wrapped around a part of the support member.

2. An antenna mounting bracket for installing an antenna using an existing structure as a support member, A base fixed to the aforementioned existing structure, A fixing plate bolted to the base, and an arm having a protruding portion with respect to the fixing plate as the base point, It has a mounting base fixed to the tip of the protruding part, on which the antenna can be installed, The fixing plate is equipped with a suspension hook that can be positioned relative to the base, The antenna mounting bracket is characterized in that the base is fixed via a bracket that clamps a part of the support member.

3. The aforementioned protruding portion consists of a horizontal portion and a vertical portion. The antenna mounting bracket according to claim 2, characterized in that the base has a horizontal adjustment mechanism and a vertical adjustment mechanism.

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