Article mounting device

Abstract

To provide an article attachment device that can easily and stably attach a repeater to a side face of a gas meter even when a surrounding space is limited, and can attach various articles other than the repeater in the same manner.SOLUTION: An article attachment device has a first fixture (10) and a second fixture (20) configured to sandwich a lowermost part of a cap of a gas meter from both sides. The first fixture comprises a first flat plate part (11) having a concave part in contact with the lowermost part of the cap from one side and a second flat plate part (12) perpendicular thereto and to which an article is attached. The second fixture comprises a third flat plate part (21) having a concave part in contact with the lowermost part of the cap from the other side and a fourth flat plate part (22) perpendicular thereto. The first fixture and the second fixture are configured to be rotatable around an axis perpendicular to the second flat plate part and the fourth flat plate part, with the second flat plate part and the fourth flat plate part being held parallel to each other.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] This invention relates to an article mounting device, and is suitable for use in, for example, removably mounting an article such as a repeater on a gas meter.

Background Art

[0002] Currently, in the urban gas supply area, the smart meter conversion of gas meters is in progress. An urban gas smart meter is a gas meter that adds a communication function to a microcomputer meter and can perform remote metering, security data transmission, remote valve opening / closing, etc. The urban gas smart meter is equipped with a built-in or externally attached communication unit, and the signal transmitted from this communication unit is transmitted to a communication network via a repeater (see, for example, Non-Patent Document 1).

Prior Art Documents

Non-Patent Documents

[0003]

Non-Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The repeater is preferably installed in a location close to the urban gas smart meter. However, generally, the space around the gas meter is limited, so it has been difficult to easily install the repeater.

[0005] Therefore, the problem that this invention aims to solve is to provide an article mounting device that allows a repeater to be easily and stably attached to the side of a gas meter even when the surrounding space is limited, and that also allows various other articles to be attached in the same easy and stably manner.

[0006] The problem that this invention aims to solve, more generally, is to provide an article mounting device that can easily and stably attach various articles to the side surface of various mounting objects having a protrusion or a rod-shaped portion. [Means for solving the problem]

[0007] To solve the above problems, this invention provides: An article mounting device for removably attaching an article to the side of a gas meter, The above-mentioned gas meter has a first mounting bracket and a second mounting bracket configured to sandwich the lowest part of the valve from both sides, The first mounting fixture described above consists of a first flat plate portion having a recess that contacts the lowest part of the mouthpiece from one side, and a second flat plate portion that is connected to the first flat plate portion and perpendicular to the first flat plate portion, to which the article is attached. The second mounting fixture described above consists of a third flat plate portion having a recess that contacts the bottom of the mouthpiece from the other side, and a fourth flat plate portion that is connected to the third flat plate portion and perpendicular to the third flat plate portion. The first mounting fixture and the second mounting fixture are characterized in that they are configured to be rotatable around an axis perpendicular to the second and fourth flat plate portions while holding the second flat plate portion of the first mounting fixture and the fourth flat plate portion of the second mounting fixture parallel to each other.

[0008] The shapes and dimensions of the first and second flat plates of the first mounting fixture, as well as the third and fourth flat plates of the second mounting fixture, are selected as necessary within a range that does not impede the function of the gas meter and is suitable for the installation environment of the gas meter, and are not particularly limited. Typically, the second flat plate has a rectangular shape that is wider than the first flat plate, the third flat plate has a rectangular shape that is narrower than the second flat plate, and the fourth flat plate has a rectangular shape that is narrower than the third flat plate, with the axis mentioned above lying on the center line of the fourth flat plate. Also, for example, the first and third flat plates, each having a recess, have shapes that are substantially symmetrical with respect to one diameter direction of the gas meter nozzle when viewed with their recesses in contact with the lowest part of the nozzle. Typically, the second flat plate portion has a first through hole on the shaft and a second through hole located away from the first through hole, and the fourth flat plate portion has a first female threaded portion on the shaft and a second female threaded portion located away from the first female threaded portion, and is configured so that a first male screw can be screwed into the first female threaded portion through the first through hole and a second male screw can be screwed into the second female threaded portion through the second through hole. For example, if the first male screw is screwed into the first female thread portion of the fourth flat plate portion through the first through hole of the second flat plate portion, and the second male screw is not screwed into the second female thread portion of the fourth flat plate portion through the second through hole of the second flat plate portion, the first and second mounting fixtures can be configured to rotate around the central axis of the first male screw while holding the second flat plate portion of the first mounting fixture and the fourth flat plate portion of the second mounting fixture parallel to each other. For this reason, for example, the first and second mounting brackets can be fixed together by rotating the second mounting bracket relative to the first mounting bracket until the first and third flat plate portions are sufficiently far apart from each other, placing the first flat plate portion on the top surface of the gas meter so that its recess contacts the bottom of the gas meter's nozzle from one side, rotating the second mounting bracket in the opposite direction relative to the first mounting bracket so that the third flat plate portion's recess contacts the bottom of the gas meter's nozzle from the other side, and then screwing the second male screw into the second female screw portion of the fourth flat plate portion through the second through hole of the second flat plate portion.By providing a columnar body of a size and height that loosely fits into the first through-hole of the second flat plate portion instead of the first female thread portion of the fourth flat plate portion, and fitting this columnar body of the fourth flat plate portion into the first through-hole of the second flat plate portion, the first and second mounting fixtures can be configured to rotate around the central axis of this columnar body while holding the second flat plate portion of the first mounting fixture and the fourth flat plate portion of the second mounting fixture parallel to each other. The method of fixing the first and second mounting fixtures to each other is the same as described above. The method of attaching an article to the second flat plate portion of the first mounting fixture is not particularly limited and can be selected as needed. For example, an article may be directly attached to the second flat plate portion of the first mounting fixture by screwing it in, or an article may be attached using the first male screw when screwing the first male screw into the first female thread portion of the fourth flat plate portion through the first through-hole of the second flat plate portion. Typically, the recess in the first flat plate portion of the first mounting bracket and the recess in the third flat plate portion of the second mounting bracket have an arc shape with a radius approximately the same as the radius of the gas meter's nozzle. This ensures that when the bottom of the gas meter's nozzle is clamped from both sides by the first and second mounting brackets, the recess in the first flat plate portion of the first mounting bracket and the recess in the third flat plate portion of the second mounting bracket securely grip the bottom of the nozzle, allowing the first and second mounting brackets to be attached to the nozzle in a secure and stable manner without loosening. The recess in the first flat plate portion of the first mounting bracket and the recess in the third flat plate portion of the second mounting bracket do not necessarily have to be arc-shaped; for example, they may have a shape in which multiple protrusions project toward the nozzle are provided on the circumferential surface.

[0009] The materials for the first and second fixtures are selected as needed, provided that they do not hinder installation to the gas meter or the attachment of articles. However, to ensure sufficient mechanical strength, metal materials such as steel, particularly stainless steel, are preferably selected. The surfaces of the first and second fixtures are coated with synthetic resin as needed.

[0010] The articles attached to the second flat plate portion of the first mounting fixture can be basically anything and are selected as needed, but examples include electrical equipment and lighting equipment. Electrical equipment includes, for example, communication equipment and communication-related equipment. In particular, if the gas meter has a communication device, the communication equipment or communication-related equipment would be a repeater that receives and amplifies radio waves transmitted from the communication device. Lighting equipment includes, for example, LED lights, especially LED lights with motion sensors.

[0011] Furthermore, this invention, An article mounting device for removably attaching an article to the side surface of an object having a protrusion or a rod-shaped portion, It has a first mounting bracket and a second mounting bracket configured to sandwich the above-mentioned protrusion or rod-shaped portion from both sides, The first mounting fixture described above consists of a first flat plate portion having a recess that contacts the convex or rod-shaped portion from one side, and a second flat plate portion that is connected to the first flat plate portion and perpendicular to the first flat plate portion, to which the article is attached. The second mounting fixture described above consists of a third flat plate portion having a recess that contacts the convex or rod-shaped portion from the other side, and a fourth flat plate portion that is connected to the third flat plate portion and perpendicular to the third flat plate portion. The first mounting fixture and the second mounting fixture are characterized in that they are configured to be rotatable around an axis perpendicular to the second and fourth flat plate portions while holding the second flat plate portion of the first mounting fixture and the fourth flat plate portion of the second mounting fixture parallel to each other.

[0012] This article mounting device includes the article mounting device described above. The object to be mounted, which has a protrusion or rod-shaped portion, can be basically any object, and includes not only devices or equipment such as gas meters, but also various structures. The direction of the protrusion or rod-shaped portion is typically vertical, but is not limited to this, and may be inclined from the vertical. The shape, dimensions, and material of the first and second mounting fixtures are selected according to the object to be mounted and the article to be attached to the second flat plate portion. The article to be attached to the second flat plate portion of the first mounting fixture can be basically any object, and is selected as needed, but in addition to the electrical equipment and lighting equipment described above, it may also be, for example, various display devices, solar panels, security cameras, etc.

[0013] In this invention of an article mounting device, matters other than those described above are considered to have been explained in relation to the above-described invention of an article mounting device, as long as they do not contradict its nature. [Effects of the Invention]

[0014] According to this invention, even when the space around the gas meter or the object to be attached is limited, the article to be attached can be attached to the second flat plate portion of the first mounting bracket, and both sides of the nozzle of the gas meter or the protruding or rod-shaped portion of the object to be attached can be sandwiched between the first and second mounting brackets, thereby allowing the necessary article to be easily and stably attached to the side of the gas meter or the object to be attached. [Brief explanation of the drawing]

[0015] [Figure 1] These are a top view and a front view showing a first mounting fixture that constitutes an article mounting device according to one embodiment of the present invention. [Figure 2] These are a top view and a front view showing a second mounting fixture that constitutes an article mounting device according to one embodiment of the present invention. [Figure 3] These are a front view, a right side view, and a top view showing a gas meter to which an article is attached by an article attachment device according to one embodiment of the present invention. [Figure 4] Top view and front view showing the state of the first fixture and the second fixture constituting the article mounting device according to an embodiment of the present invention when attached to the base of the gas meter. [Figure 5] Perspective view showing a knurled screw used to fix the first fixture and the second fixture constituting the article mounting device according to an embodiment of the present invention to each other. [Figure 6] Top view and front view showing the state in which the second fixture rotates with respect to the first fixture of the first fixture and the second fixture constituting the article mounting device according to an embodiment of the present invention. [Figure 7] Perspective view showing an LTE repeater attached to a gas meter by an article mounting device according to an embodiment of the present invention. [Figure 8] Perspective view showing the state immediately before attaching an LTE repeater to a gas meter by an article mounting device according to an embodiment of the present invention. [Figure 9] Perspective view showing the state where the first flat plate portion of the first fixture of the article mounting device according to an embodiment of the present invention is placed on the upper surface of the gas meter so that the recess of the first flat plate portion contacts the lowermost part of the base of the gas meter from one side. [Figure 10] Perspective view showing the state during the rotation of the second fixture toward the first fixture in the state where the first flat plate portion of the first fixture of the article mounting device according to an embodiment of the present invention is placed on the upper surface of the gas meter so that the recess of the first flat plate portion contacts the lowermost part of the base of the gas meter from one side. [Figure 11] Perspective view showing the state where the second fixture is rotated toward the first fixture in the state where the first flat plate portion of the first fixture of the article mounting device according to an embodiment of the present invention is placed on the upper surface of the gas meter so that the recess of the first flat plate portion contacts the lowermost part of the base of the gas meter from one side, and the recess of the third flat plate portion of the second fixture contacts the lowermost part of the base of the gas meter from the other side. [Figure 12]This perspective view shows a state in which the first mounting bracket of an article mounting device according to one embodiment of the present invention is fixed to each other, with the first mounting bracket placed on the top surface of a gas meter so that the recess of the first flat plate of the first mounting bracket contacts the bottom of the gas meter's nozzle, the second mounting bracket is rotated toward the first mounting bracket, the recess of the third flat plate of the second mounting bracket contacts the bottom of the gas meter's nozzle from the other side, and the first and second mounting brackets are fixed to each other. [Modes for carrying out the invention]

[0016] The following describes embodiments for carrying out the invention.

[0017] <One Embodiment> [Article mounting device] Figures 1A and 1B show the first mounting fixture 10 that constitutes this article mounting device, and Figures 2A and 2B show the second mounting fixture 20 that constitutes this article mounting device. Here, Figures 1A and 2A are top views, and Figures 1B and 2B are front views. Figures 3A, 3B and 3C show a gas meter 30 to which an article is mounted using this article mounting device. Here, Figure 3A is a front view, Figure 3B is a right side view, and Figure 3C is a top view. The top surface of the gas meter 30 is provided with two nozzles 31 and 32 on the left and right sides. Male threads 31a and 32a are cut on the outer circumference of the nozzles 31 and 32, respectively, except for the bottom. Figures 3A, 3B and 3C schematically illustrate the external shape of the gas meter 30. The gas meter 30 has a conventionally known configuration, and detailed illustration and explanation are omitted. Figures 4A and 4B show the first mounting fixture 10 and the second mounting fixture 20 attached to the nozzle 32 of the gas meter 30.

[0018] As shown in Figures 1A and 1B, the first mounting fixture 10 consists of a first flat plate portion 11 having a circular recess 11a that contacts from one side the lowest part of the gas meter 30's nozzle 32 where the male thread 32a is not cut, and a second flat plate portion 12 that is connected to the first flat plate portion 11 and perpendicular to it. An article is attached to the second flat plate portion 12. The width of the first flat plate portion 11 in the direction of the boundary with the second flat plate portion 12 is small, about half or less of the width of the second flat plate portion 12. About half of the first flat plate portion 11 opposite to the second flat plate portion 12 has an arc-shaped curve to match the recess 11a. The second flat plate portion 12 is wider than the first flat plate portion 11 and wider than the fourth flat plate portion 22 of the second mounting fixture 20 described later, and has a roughly square shape. Approximately half of the first flat plate portion 11 that faces the second flat plate portion 12, and the side of the second flat plate portion 12 opposite to the recess 11a, are located on a plane perpendicular to the first flat plate portion 11. Near the side of the second flat plate portion 12 opposite to this side, four through holes 12a, 12b, 12c, and 12d are provided in a row parallel to this side. The through holes 12a and 12c are for passing the knurled screw (described later) through and for attaching an article to the second flat plate portion 12, and have a diameter slightly larger than the male thread portion of the knurled screw.

[0019] As shown in Figures 2A and 2B, the second mounting fixture 20 consists of a third flat plate portion 21 having a recess 21a that contacts the lowest part of the gas meter 30's nozzle 32 where the male thread 32a is not cut, from the other side, and a fourth flat plate portion 22 that is connected to the third flat plate portion 21 and perpendicular to it. The width of the fourth flat plate portion 22 in the direction of the boundary with the third flat plate portion 21 is small, about 1 / 3 or less of the width of the third flat plate portion 21. About half of the third flat plate portion 21 on the side of the fourth flat plate portion 22 is inclined linearly toward the recess 21a, and about half on the opposite side of the fourth flat plate portion 22 has a curved shape that conforms to the recess 21a. On the lower half of the fourth flat plate portion 22, a female threaded portion 22a, a through hole 22b, a female threaded portion 22c, and a through hole 22d are provided in a row along the center line of the fourth flat plate portion 22. The female threaded portions 22a and 22c are for screwing in the knurled screws described later.

[0020] As shown in Figures 4A and 4B, when the first mounting bracket 10 and the second mounting bracket 20 are attached to the bottom of the opening 32 of the gas meter 30, the first flat plate portion 11 of the first mounting bracket 10 and the third flat plate portion 21 of the second mounting bracket 20 are located on a horizontal plane. Also, the second flat plate portion 12 of the first mounting bracket 10 and the fourth flat plate portion 22 of the second mounting bracket 20 are held parallel to each other with the second flat plate portion 12 facing outwards. When the first mounting bracket 10 and the second mounting bracket 20 are fixed to each other, the through holes 12a, 12b, 12c, and 12d of the second flat plate portion 12 of the first mounting bracket 10 coincide with the female thread portion 22a, through hole 22b, female thread portion 22c, and through hole 22d of the fourth flat plate portion 22 of the second mounting bracket 20, respectively. A knurled screw 40, as shown in Figure 5, is screwed into the female threaded portion 22a of the fourth flat plate portion 22 through the through hole 12a of the second flat plate portion 12, and similarly, a knurled screw 40 is screwed into the female threaded portion 22c of the fourth flat plate portion 22 through the through hole 12c of the second flat plate portion 12. In this way, the second flat plate portion 12 and the fourth flat plate portion 22 are fixed to each other at two different points by the knurled screws 40, thereby enabling the first mounting fixture 10 and the second mounting fixture 20 to be fixed to each other. As shown in Figure 6, when the knurled screw 40 is screwed into the female threaded portion 22c of the fourth flat plate portion 22 through the through hole 12c of the second flat plate portion 12, and the knurled screw 40 is not screwed into the female threaded portion 22a of the fourth flat plate portion 22 through the through hole 12a of the second flat plate portion 12, the first mounting fixture 10 and the second mounting fixture 20 are rotatable around the central axis of the knurled screw 40, which is perpendicular to the second flat plate portion 12 and the fourth flat plate portion 22.

[0021] The first mounting fixture 10 and the second mounting fixture 20 are made of, for example, stainless steel (such as SUS304), and their surfaces are coated with a resin such as polyvinyl chloride (PVC) as needed.

[0022] The dimensions of each part of the first mounting fixture 10 and the second mounting fixture 20 are determined appropriately according to the gas meter 30 to which the item is to be attached, but an example of the dimensions of the main parts is as follows: The first flat plate part 11 of the first mounting fixture 10 has a width of approximately 24 mm, a total length of approximately 62 mm, a radius of approximately 18 mm for the recess 11a, and a thickness of approximately 1.5 mm. The second flat plate part 12 has a width of approximately 55 mm, a height of approximately 60 mm, and a thickness of approximately 1.5 mm. The distance between the upper end of the second flat plate part 12 and the through hole 12a is 32 mm, and the distance between the through hole 12a and the through hole 12c is 15 mm. The third flat plate portion 21 of the second mounting fixture 20 has a maximum width of approximately 27 mm, a total length of approximately 61 mm, a recess 21a radius of approximately 18 mm, and a thickness of approximately 1.5 mm. The fourth flat plate portion 22 has a width of approximately 8.5 mm, a height of approximately 60 mm, and a thickness of approximately 1.5 mm. The distance between the upper end of the fourth flat plate portion 22 and the female thread portion 22a is 32 mm, and the distance between the female thread portion 22a and the female thread portion 22c is 15 mm.

[0023] [Method for attaching items to a gas meter using an item attachment device] Here, as an example, we will describe the case in which an LTE repeater is attached to a gas meter 30 as an item. In this case, the gas meter 30 is a gas meter with communication functions. Figure 7 shows the LTE repeater 50. As shown in Figure 7, a mounting projection 51 is provided on one corner of the upper part of the back side of the LTE repeater 50. Through holes 51a and 51b are provided on the center line of this projection 51. The distance between the through holes 51a and 51b is the same as the distance between the through holes 12a and 12c of the second flat plate portion 12 of the first mounting fixture 10.

[0024] As shown in Figure 8, the through-hole 51b of the projection 51 of the LTE repeater 50, the through-hole 12c of the second flat plate portion 12 of the first mounting fixture 10, and the female thread portion 22c of the fourth flat plate portion 22 of the second mounting fixture 20 are aligned in this order, and the knurled screw 40 is loosely screwed into the female thread portion 22c through the through-holes 51b and 12c to temporarily fasten it.

[0025] Next, as shown in Figure 9, while supporting the LTE repeater 50 by hand, the first flat plate portion 11 of the first mounting fixture 10 is placed on the right side of the gas meter 30 in the space next to the nozzle 32 on the top surface of the gas meter 30, with the recess 11a facing the nozzle 32, and then slid horizontally to bring the recess 11a into contact with the bottom of the nozzle 32 from one side. The gas piping 61 is connected to the nozzle 32 on the top surface of the gas meter 30 by screwing a nut 62 into the male threaded portion 32a of the nozzle 32. If necessary, a cushioning rubber plate is attached to a part of the surface of the gas meter 30 that the LTE repeater 50 contacts. This prevents damage to the gas meter 30 and the LTE repeater 50 from the LTE repeater 50 hitting the side of the gas meter 30 when the gas meter 30 shakes due to an earthquake or other event.

[0026] Next, as shown in Figure 10, while continuing to support the LTE repeater 50 by hand as needed, rotate the third flat plate portion 21 of the second mounting fixture 20 counterclockwise around the central axis of the knurled screw 40 that is screwed into the female thread portion 22c through the through holes 51b and 12c, so that the recess 21a of the third flat plate portion 21 contacts the bottom of the base 32 from the other side, as shown in Figure 11. In this state, the first flat plate portion 11 of the first mounting fixture 10 and the third flat plate portion 21 of the second mounting fixture 20 are located on a nearly horizontal plane. Also, the through hole 51a of the projection portion 51 of the LTE repeater 50, the through hole 12a of the second flat plate portion 12 of the first mounting fixture 10, and the female thread portion 22a of the fourth flat plate portion 22 of the second mounting fixture 20 are aligned with each other.

[0027] Next, as shown in Figure 12, while continuing to support the LTE repeater 50 by hand as needed, the knurled screw 40 is tightly screwed into the female threaded portion 22a of the fourth flat plate 22 of the second mounting bracket 20 through the through hole 51a of the projection 51 of the LTE repeater 50 and the through hole 12a of the second flat plate 12 of the first mounting bracket 10, with the recess 11a of the first flat plate 11 of the first mounting bracket 10 and the recess 21a of the third flat plate 21 of the second mounting bracket 20 in contact with the bottom of the base 32 from both sides. At this time, the knurled screw 40 that has been screwed into the female threaded portion 22c through the through hole 12c of the second flat plate 12 of the first mounting bracket 10 and the through hole 51c of the third flat plate 21 of the second mounting bracket 20 is also tightly screwed in. In this way, the first mounting bracket 10 and the second mounting bracket 20 are fixed to each other.

[0028] As described above, the LTE repeater 50 can be detachably attached to the side of the gas meter 30 using an article mounting device consisting of the first mounting fixture 10 and the second mounting fixture 20.

[0029] According to this embodiment, an article mounting device is constructed using a first mounting bracket 10 and a second mounting bracket 20. An article to be attached to the side of the gas meter 30, such as an LTE repeater 50, is attached to the second flat plate portion 12 of the first mounting bracket 10. The lowest part of the nozzle 32 of the gas meter 30 is then sandwiched from both sides by the recess 11a of the first flat plate portion 11 of the first mounting bracket 10 and the recess 21a of the third flat plate portion 21 of the second mounting bracket 20. This allows an article, such as an LTE repeater 50, to be easily and stably attached to the side of the gas meter 30. Furthermore, since the article mounting device consisting of the first mounting bracket 10 and the second mounting bracket 20 can be constructed compactly, an article such as an LTE repeater 50 can be easily attached to the side of the gas meter 30 even when the space around the gas meter 30 is limited.

[0030] Although one embodiment of the present invention has been described in detail above, the present invention is not limited to the above-described embodiment, and various modifications based on the technical idea of ​​the present invention are possible.

[0031] For example, the numerical values, structures, configurations, materials, and methods mentioned in the above-described embodiments are merely examples, and different numerical values, structures, configurations, materials, and methods may be used as needed. [Explanation of Symbols]

[0032] 10...First mounting bracket, 11...First flat plate section, 11a...Recess, 12...Second flat plate section, 20...Second mounting bracket, 21...Third flat plate section, 21a...Recess, 22...Fourth flat plate section, 30...Gas meter, 31, 32...Vat, 40...Knurled screw, 50...LTE repeater, 51...Protrusion

Claims

1. An article mounting device for removably attaching an article to the side of a gas meter, The above-mentioned gas meter has a first mounting bracket and a second mounting bracket configured to clamp the lowest part of the valve from both sides, The first mounting fixture described above consists of a first flat plate portion having a recess that contacts the lowest part of the mouthpiece from one side, and a second flat plate portion that is connected to the first flat plate portion and perpendicular to the first flat plate portion, to which the article is attached. The second mounting fixture described above consists of a third flat plate portion having a recess that contacts the bottom of the mouthpiece from the other side, and a fourth flat plate portion that is connected to the third flat plate portion and perpendicular to the third flat plate portion. An article mounting device characterized in that the first mounting fixture and the second mounting fixture are configured to be rotatable about an axis perpendicular to the second flat plate portion and the fourth flat plate portion while holding the second flat plate portion of the first mounting fixture and the fourth flat plate portion of the second mounting fixture parallel to each other.

2. The article mounting device according to claim 1, wherein the second flat plate portion has a rectangular shape that is wider than the first flat plate portion, the third flat plate portion is narrower than the second flat plate portion, and the fourth flat plate portion has a rectangular shape that is narrower than the third flat plate portion, and the axis is on the center line of the fourth flat plate portion.

3. The article mounting device according to claim 1, wherein the second flat plate portion has a first through hole on the shaft and a second through hole at a position away from the first through hole, the fourth flat plate portion has a first female thread portion on the shaft and a second female thread portion at a position away from the first female thread portion, and the first male screw can be screwed into the first female thread portion through the first through hole, and the second male screw can be screwed into the second female thread portion through the second through hole.

4. The article mounting device according to claim 1, wherein the recess of the first flat plate portion and the recess of the third flat plate portion have a substantially semicircular shape with a radius substantially the same as the radius of the lowest part of the nozzle of the gas meter.

5. The article mounting device according to claim 1, wherein the first mounting fixture and the second mounting fixture are made of metal.

6. The article mounting device according to claim 5, wherein the surfaces of the first mounting fixture and the second mounting fixture are coated with synthetic resin.

7. The article mounting device according to any one of claims 1 to 6, wherein the article is an electrical device or a lighting device.

8. The article mounting device according to claim 7, wherein the above electrical equipment is a communication device or a communication-related device.

9. The article mounting device according to claim 8, wherein the gas meter has a communication device, and the communication device or communication-related device is a relay that receives and amplifies radio waves transmitted from the communication device.

10. An article mounting device for removably attaching an article to the side surface of an object having a protrusion or a rod-shaped portion, The device has a first mounting bracket and a second mounting bracket configured to sandwich the above-mentioned protrusion or rod-shaped portion from both sides, The first mounting fixture described above consists of a first flat plate portion having a recess that contacts the convex or rod-shaped portion from one side, and a second flat plate portion that is connected to the first flat plate portion and perpendicular to the first flat plate portion, to which the article is attached. The second mounting fixture described above consists of a third flat plate portion having a recess that contacts the convex or rod-shaped portion from the other side, and a fourth flat plate portion that is connected to the third flat plate portion and perpendicular to the third flat plate portion. An article mounting device characterized in that the first mounting fixture and the second mounting fixture are configured to be rotatable about an axis perpendicular to the second flat plate portion and the fourth flat plate portion while holding the second flat plate portion of the first mounting fixture and the fourth flat plate portion of the second mounting fixture parallel to each other.

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