JP2017224953A - Fixture of electrical apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To propose a fixture of electrical apparatus which allows for addition of a new system to a place where an existing system has been installed.SOLUTION: A fixture of electrical apparatus includes a root, an arm extending therefrom, and a tip. The root is fixed to the side, in a connection member for attaching a first electrical apparatus to a predetermined place, other than the side used for attaching the first electrical apparatus. The tip is a part for attaching a second electrical apparatus different from the first electrical apparatus.SELECTED DRAWING: Figure 3

Description

  The present disclosure relates to a fixture for attaching an electric device to a predetermined place.

Currently, various existing systems (electrical devices) are installed on steel towers or on relatively high-rise buildings such as buildings and condominiums. Examples of existing systems include an antenna, a base station, and a radio (communication device). Many such existing systems are already installed on the same steel tower or building.For example, when adding a new system to a steel tower or building where the existing system is installed, it is difficult to secure the installation location. ing.
For example, Patent Literature 1 discloses an attachment device for attaching a communication base station to a support pole such as a utility pole.

JP 2013-21770 A

  The present disclosure proposes a fixture for an electric device that enables a new system to be added to a place where an existing system is installed.

The fixture of the electrical equipment according to the present disclosure includes a root portion, an arm portion extending from the root portion, and a tip portion. The root portion is fixed to a surface other than the surface used for attaching the first electric device in the connection member for attaching the first electric device to a predetermined place. Moreover, the front-end | tip part is a site | part for attaching the 2nd electric equipment different from a 1st electric equipment.
Further features of the present disclosure will become apparent from the following detailed description and the accompanying drawings.

  According to the present disclosure, a place for installing a new system can be easily secured.

It is a figure which shows the state which looked at the whole antenna apparatus when the new antenna apparatus (simple antenna) 20 in 1st Embodiment was attached to the existing antenna apparatus 10 from the upper direction. It is a figure which shows the external appearance of the whole antenna apparatus when the new antenna apparatus 20 in 1st Embodiment is attached to the existing antenna apparatus 10. FIG. FIG. 3 is an exploded view showing a configuration of an antenna fixture 30. It is a figure which shows the whole antenna apparatus when the new antenna apparatus (simple antenna) 20 in 2nd Embodiment is attached to the existing antenna apparatus 10. FIG. It is a figure which shows the state which looked at the whole antenna apparatus when the new antenna apparatus (simple antenna) 20 in 3rd Embodiment was attached to the existing antenna apparatus 10 from the upper direction.

  Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. In the accompanying drawings, functionally identical elements may be denoted by the same numbers.

  Each embodiment has been described in sufficient detail for those skilled in the art to practice the present disclosure, but other implementations and configurations are possible without departing from the scope and spirit of the technical idea of the present disclosure. It is necessary to understand that the configuration and structure can be changed and various elements can be replaced. Therefore, the following description should not be interpreted as being limited to this.

(1) First Embodiment In the first embodiment, the feature of the present disclosure will be described by taking an antenna device as an example of an electrical device to be attached. However, the feature of the present disclosure is an electrical device other than the antenna device (communication device, The present invention can also be applied to radio equipment, base stations, and the like.

<Problems in the antenna device: supplement>
As described above in the background art, an existing antenna device that transmits and receives radio waves in a predetermined frequency band and covers a predetermined communication area is attached to a steel tower and various buildings (structures). On the other hand, in recent years, there are many needs for newly adding an antenna device (new antenna device) having a frequency band different from that of the existing antenna device.

  In order to meet such needs, first of all, it is possible to replace the existing antenna device with an antenna device that can handle both the existing frequency band and the new frequency band. However, when replacing the antenna device, the existing antenna device must be stopped. This stops the existing service, which is not preferable.

  In addition to the replacement of the antenna device, it is also conceivable to attach the new antenna device to another place (a portion having a different height) of the pole (post) to which the existing antenna device is attached. However, it is necessary to match the direction of directivity between the existing antenna device and the new antenna device, and it is preferable that the installation heights are aligned.

  Furthermore, it is conceivable to attach a subpole for attaching a new antenna device to an existing pole, and attach the new antenna device to the subpole. However, when the sub-pole and the new antenna device are further attached, the total weight of the attached device or member may exceed the load resistance of the pole (existing pole).

  Therefore, the first embodiment proposes a fixture for attaching a new antenna device more easily without attaching a new pole to the existing pole and without stopping the existing antenna device. .

<A state where the new antenna device is attached to the existing antenna device>
(I) FIG. 1 shows the entire antenna device when the new antenna device (simple antenna) 20 is attached to the existing antenna device 10 in the first embodiment as viewed from above (in the direction of arrow Z in FIG. 2A). It is a figure which shows a state. The new antenna device 20 is an antenna that operates in a frequency band higher than the frequency band of the existing antenna device 10, for example.

  A connecting member 11 for attaching (fixing) the existing antenna device 10 to the pole is attached to the existing antenna device 10. The connection member 11 is a U-shaped member, and is fixed to the existing antenna device 10 by screws or welding (example) at the opening end 113 (see FIG. 3). Since the connection member 11 cannot be directly fixed to the pole, the connection member 11 is fixed to the pole via a fixture (adapter member) (the connection member 11 and the fixture are screwed, for example). As shown in FIG. 1, the fixture includes an inner contact surface 411 that matches the side shape of the pole and a first fixing member 41 having a screw hole (example), and an inner contact surface that also matches the side shape of the pole. A second fixing member 42 having a surface 421 and two fasteners 43 are included.

  On the other hand, the new antenna device 20 is fixed to the antenna attachment 30 attached so as to extend from the side surface 112 (see FIG. 3) of the connection member 11. The antenna attachment 30 is fixed to the distal end portion of the arm member 31 attached to the side surface portion of the connection member 11. The arm member 31 includes a root portion and an arm portion. Although details of the antenna mounting tool 30 will be described later, as shown in FIG. 1, the mounting direction of the existing antenna device 10 and a new antenna fixed to the connection member 11 of the existing antenna device 10 via the antenna mounting tool 30. The mounting direction of the device 20 is the same direction. That is, the directivity direction of the existing antenna device 10 and the directivity direction of the new antenna device 20 can be matched.

(Ii) FIG. 2 is a diagram illustrating an external appearance of the entire antenna device when the new antenna device 20 is attached to the existing antenna device 10 in the first embodiment. FIG. 2A shows a state in which the entire antenna device is viewed from the pole side. FIG. 2B shows a state in which the entire antenna device is viewed from the side (new antenna device 20 side). FIG. 2C shows a state in which the entire antenna device is viewed from the front diagonally upper right direction. FIG. 2D shows a state in which the entire antenna device is viewed from the front obliquely lower left direction. The new antenna device 20 is smaller than the existing antenna device 10 because it transmits and receives radio waves in a higher frequency band than the existing antenna device 10.

  As can be seen from FIGS. 2A to 2D, the new antenna device 20 is attached to the side surface 112 of the connection member 11 fixed to the existing antenna device 10 via the antenna attachment 30, and is parallel to the existing antenna device 10. . Further, as can be seen from FIG. 2B, the antenna fixture 30 is substantially L-shaped so that the position of the radio wave radiation surface of the existing antenna device 10 and the position of the radio wave radiation surface of the new antenna device 20 are approximately the same. It has a shape. By doing in this way, the installation position of the existing antenna apparatus 10 and the installation position of the new antenna apparatus 20 in a pole can be made substantially the same. Therefore, the directivity directions of the existing antenna device 10 and the new antenna device 20 can be easily matched, and even if the antenna has a wide beam width in the horizontal plane, the adjacent antenna interferes with the other antenna device. It is possible to prevent the directivity of the antenna from deteriorating.

  In FIG. 2, the new antenna device 20 is attached to the upper connection member 11 of the two connection members 11 fixed to the existing antenna device 10, but may be attached to the lower connection member 11. Good.

<Configuration of antenna fixture>
FIG. 3 is an exploded view showing the configuration of the antenna fixture 30. The antenna mounting tool 30 includes an arm member 31, pole mounting brackets 33 and 34, a mounting pole 32, and a tilt mounting bracket 35.

  The arm member 31 is attached to the connection member 11 so that the root thereof is screwed to the side surface 112 of the connection member 11 with a screw and a nut plate 36 and extends in a direction perpendicular to the side surface 112 of the connection member 11. In FIG. 3, as an example, a case in which a hole is formed in the connection member 11 from the beginning is shown. However, if no hole is formed in the connection member 11, before attaching the arm member 31. It is necessary to form screw holes. Alternatively, the arm member 31 may be attached to the connection member 11 by a method other than screwing. As a method other than screwing, for example, (i) fixing by welding, or (ii) the base (base member) of the arm member 31 is formed in a U-shape (see FIG. 3B) and connected by the base member. The member 11 may be sandwiched and the opening portion of the pedestal member (the opening portion of the U shape) may be screwed.

  The pole mounting brackets 33 and 34 are members (direction changing members) for changing the extending direction of the new antenna device 20 (the direction extending from the connection member 11). In the first embodiment, the extending direction is changed in a direction perpendicular to the arm member 31 by the pole mounting brackets 33 and 34, but by attaching a predetermined angle to the tilt mounting surface 341 of the pole mounting bracket 34. The maximum radiation direction in the vertical plane can be set to a desired direction.

The mounting pole 32 is a cylindrical member for mounting the new antenna device 20.
In general, since such an antenna device is often designed to be attached to a cylindrical pole, the installation pole 32 can be a cylindrical member so that it can be installed without a special mounting member. It becomes. Moreover, the installation position of a height direction can also be set freely by setting the length of the pole 32 for attachment longer than the length required for attachment.

  The end of the tilt fitting 35 is fixed to the tilt fitting mounting surface 341 of the pole mounting bracket with, for example, a screw, and the other end is fixed to the joint member 21 attached to the new antenna device 20 with, for example, a screw. Fixed.

  In addition, in 1st Embodiment, although the antenna fixture 30 is comprised by the some member as shown in FIG. 3, it is not limited to this. For example, the antenna fixture 30 may be configured as a single member having an L shape, or only a part of the antenna fixture 30 (for example, the pole mounting bracket 34 and the tilt bracket 35) may be configured integrally. Good.

(2) Second Embodiment FIG. 4 is a diagram illustrating the entire antenna device when the new antenna device (simple antenna) 20 is attached to the existing antenna device 10 in the second embodiment. In the first embodiment, the mounting pole 32 is provided and the new antenna device 20 is attached to the mounting pole 32. However, in the second embodiment, the new antenna device 20 is not provided without the mounting pole 32. Is attached.

  As shown in FIG. 4A, in the second embodiment, the arm member 53 is constituted by a pipe having a cylindrical cross section, and the arm member 61 attached to the mounting bracket 21 of the new antenna device 20 is fixed to the arm member 61 by the fixing bracket 62. The structure is fixed directly.

  FIG. 4B is a diagram illustrating a state where the arm member 53 and the portion connecting the arm member 61 are viewed from the a direction in FIG. 4A. The shape of the portion where the arm member 53 and the arm member 61 are connected is an arc shape along the arm member 53, and the fixing bracket 62 is also an arc shape. By tightening them with bolts and nuts, for example, the arm member 61 is fixed to the arm member 53 on the inner contact surface of the arm member 61 and the fixing bracket 62.

  FIG. 4C shows another embodiment of the connecting portion between the arm member 53 and the arm member 63. The arm member 63 and the fixing bracket 64 employ a structure in which a protrusion is provided with a U-shaped cross section. Thereby, even if a rotational force is applied to the arm member 53, the arm member 53 can be reliably fixed.

  Thus, in the second embodiment, since the mounting pole 32 is not provided, the arm member 53 can be reduced in weight and the cost can be reduced. Further, an arbitrary tilt (maximum radiation direction in the vertical plane) can be set without using the tilt fitting 35 in the first embodiment.

  In the second embodiment, the arm member 53 is formed of a cylindrical pipe. However, the arm member 53 is not necessarily a cylindrical pipe, and the cross-sectional shape may be a square shape or an L shape. Further, the cross-sectional shape may be any shape as long as the arm member 61 and the arm member 63 have a desired strength.

(3) Third Embodiment FIG. 5 is a diagram illustrating the entire antenna device when the new antenna device (simple antenna) 20 is attached to the existing antenna device 10 in the third embodiment. In the second embodiment, the arm member 53 and the arm member 61 are configured as separate members. However, in the third embodiment, the arm member 71 includes the arm member 53 and the arm member 61 as an integral structure. Thus, the new antenna device 20 is attached to the existing antenna device 10.

  The arm member 71 has a structure in which a pipe is bent into a substantially L shape. A flange 72 and a flange 73 are attached to both ends of the arm member 71 by screws or welding. The flange 72 is attached to the side surface portion of the connection member 11, and the flange 73 fixes the flange 82. The flange 82 is attached to an antenna fixture 81 that is a fixture of the new antenna device 20 by screws or welding.

  Thus, by employing the arm member 71 bent into a substantially L shape, the arm member can be reduced in weight and cost.

  In the third embodiment, the pipe is bent, but the cross-sectional shape of the pipe may be round, square, or other shapes, and two L-shaped or U-shaped angles may be joined by welding. Alternatively, a mounting pole 32 and a tilt fitting 35 may be provided as necessary.

  Furthermore, although the flange 72, the flange 73, and the flange 82 are attached by screws or welding, other joining methods other than screws and welding may be used as long as a desired attachment strength is obtained.

(4) Summary (i) The fixture of the electrical apparatus according to the present embodiment includes a root portion, an arm portion extending from the root portion, and a tip portion. The root portion is a surface (for example, a U-shape) other than the surface used for attaching the existing electric device (first electric device) in the connection member for attaching the first electric device to the predetermined structure. The side of the connecting member is fixed. The tip portion is a part for attaching a new electric device (second electric device) different from the first electric device. As described above, since the new electric device can be mounted on the surface of the connecting member of the existing electric device (for example, a member for fixing the existing electric device to the pole) that is not used, the installation location of the new electric device Can be easily secured. Moreover, a new antenna device can be installed without adding a new metal fitting to the structure to which the existing antenna device is attached.

  The arm part of the fixture of the electric device has an L shape. The arm portion may be configured to have an L shape with one member, or may be configured to have an L shape with a plurality of members. When the arm portion is composed of a plurality of members, the arm portion includes a first arm member extending from the root portion, a second arm member extending in a direction different from the direction in which the first arm member extends, A member for connecting the first arm member and the second arm member. Both the existing electric device and the new electric device can be antenna devices. At this time, in this embodiment, the arm portion is configured in an L shape, or the second arm member is configured to extend in a direction perpendicular to the direction in which the first arm member extends. It becomes possible to make the directivity direction and the directivity direction of the new antenna device match.

DESCRIPTION OF SYMBOLS 10 Existing antenna apparatus 20 New antenna apparatus 30 Antenna attachment tool 31 Arm member 32 Pole 33 and 34 Pole attachment bracket 35 Tilt bracket

Claims (5)

A root portion, an arm portion extending from the root portion, and a tip portion,
The root portion is fixed to a surface other than a surface used for attaching the first electric device in a connection member for attaching the first electric device to a predetermined structure;
The front-end | tip part is an attachment part of an electrical equipment which is a site | part for attaching the 2nd electrical equipment different from the said 1st electrical equipment. In claim 1,
The arm part is an L-shaped fixture for an electric device. In claim 1 or 2,
The arm portion includes a first arm member extending from the root portion, a second arm member extending in a direction different from a direction in which the first arm member extends, the first arm member, and the second arm member. And a member for connecting the arm member. In claim 3,
The first electric device is an existing antenna device that is already attached to the predetermined structure,
The second electrical device is a mounting device for an electrical device, which is a new antenna device that is attached to the connection member of the existing antenna device. In claim 4,
The second arm member extends in a direction perpendicular to the direction in which the first arm member extends so that the directionality of the existing antenna device matches the directionality of the new antenna device. Equipment fixture.

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