JP2008092080A - Fixing device of wireless communication apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To fix a wireless communication apparatus to a wall surface such that wireless communication performance can be sustained. <P>SOLUTION: The fixing device of a wireless communication apparatus 10 consists of the housing of the wireless communication apparatus 10, and a bracket member 20 of nonmagnetic body for spacing the housing apart from the wall surface 2 by a predetermined distance. The housing of the wireless communication apparatus has at least two fixing portions 121 and 122 which can secure the wireless communication apparatus to the wall surface at least two fixing portions. The bracket member has a fixing portion which can secure the bracket member to the wall surface at least two fixing portions, and a third surface spaced apart from the wall surface by a predetermined distance wherein at least two fixing portions 24 and 25 for securing the housing of the wireless communication apparatus are provided on the third surface. Since the bracket member is inserted between the wall surface and the housing of the wireless communication apparatus, the wireless communication apparatus is secured to the wall surface while surface spaced apart by a predetermined distance. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an attachment device for attaching a wireless communication device to a wall surface of a dwelling unit such as a house or an apartment.

  For example, the amount of propane gas installed in a house or an apartment in a condominium is wirelessly transmitted to the meter reading center using radio waves from a wireless communication device connected to a gas meter. A system is provided that allows gas cylinders to be replenished or replaced as appropriate based on the amount used.

  In this case, as shown in FIG. 8, the wireless communication apparatus 1 is generally connected to a gas meter (not shown in FIG. 8) in the vicinity of a gas cylinder installed outside, and outside the dwelling unit such as a house or an apartment. Fixed to the wall 2 and attached. In this case, the antenna 3 of the wireless communication apparatus 1 is a rod-shaped antenna, and the center line direction of the rod-shaped antenna is along the vertical direction, and is thus in a state parallel to the outer wall surface 2. The wireless communication device 1 is fixed to the outer wall surface 2 so that the transmission / reception performance is the best.

Patent documents related to the technology are as follows.
JP 2005-353724 A

  By the way, in the wall where the wireless communication device 1 is attached, an electric product that generates a strong electromagnetic wave is disposed inside the dwelling unit corresponding to the outer wall surface where the wireless communication device 1 is attached. In such a case, there is a problem that the wireless communication of the wireless communication device 1 is disturbed or the transmission / reception capability is reduced.

  Conventionally, as shown in FIG. 8, the antenna 3 of the wireless communication device 1 is attached to the side surface of the casing of the wireless communication device 1, and the antenna 3 is rotated around the attachment portion as a rotation shaft. The structure is made movable, and the antenna 3 is rotated as far as possible from the outer wall surface 2 as shown by an arrow in FIG.

  However, as described above, the antenna 3 of the wireless communication device 1 originally originally has the best wireless communication performance when it is arranged in the vertical direction as shown by the solid line in FIG. For this reason, there is a problem that it becomes difficult to obtain the original performance of the antenna 3 when it is inclined with respect to the vertical direction as shown by a broken line in FIG. I couldn't move it.

  However, with the separation distance from the outer wall surface 2 to the antenna 3 due to this degree of rotation, it has not been possible to sufficiently solve the above-described problem of rebar within the wall surface and electromagnetic wave interference from the room.

  Further, since the wireless communication device 1 is often installed outdoors, it is desirable that the waterproof and dustproof structure be sealed as much as possible, but the antenna 3 is attached to the side surface of the housing 1. In this case, it is necessary to use a packing or a shield member in order to make the mounting portion of the antenna 3 waterproof and dustproof. These packing and shield members may deteriorate in waterproof performance and dustproof performance due to secular change, and it has been difficult to achieve a complete waterproof and dustproof structure. In addition, maintenance and inspection of those packings and shield members is necessary, which is troublesome.

  In view of the above points, the present invention more reliably solves the above-described problem even if there is a reinforcing bar in the mounting wall or there is an electromagnetic interference from the indoor, and the wireless communication device wirelessly An object of the present invention is to provide an apparatus for attaching a wireless communication apparatus capable of maintaining communication performance.

In order to solve the above problems, the present invention provides:
The wireless communication device housing and a bracket member made of a non-magnetic material for separating the wireless communication device housing from the wall surface by a predetermined distance,
The housing of the wireless communication device can fix the wireless communication device at at least two attachment positions with respect to the wall surface with the first surface side of the housing being in contact with the wall surface. Comprising at least two first attachment parts,
The bracket member allows the bracket member to be fixed at at least two attachment positions with respect to the wall surface in a state where the second surface side of the bracket member is in contact with the wall surface. And a third surface spaced from the second surface by the predetermined distance, and the third surface has at least two first surfaces with respect to the bracket member. At least two third attachment portions for fixing the housing of the wireless communication device by the attachment portion are provided,
By inserting the bracket member between the wall surface and the housing of the wireless communication device, the wireless communication device is fixed to the wall surface by separating the housing from the wall surface by the predetermined distance. Provided is a wireless communication device mounting device.

  According to this invention of the above-mentioned structure, the housing | casing of a radio | wireless communication apparatus is comprised so that it may be fixed with respect to the bracket member fixed to the wall surface. Since the bracket member is made of a non-magnetic material for separating the casing of the wireless communication apparatus from the wall surface by a predetermined distance, the antenna of the wireless communication apparatus is securely connected to the wall surface by a predetermined distance by the bracket member. Separated from

  Therefore, even if there is a reinforcing bar in the mounting wall or there is an electromagnetic wave interference from the inside, it is possible to remove the influence on transmission / reception with the antenna of the wireless communication device. Since the antenna of the wireless communication device does not need to be structured to be rotated as in the prior art, the antenna can be fixedly attached to the housing in a state where the maximum performance can be obtained. For this reason, it is easy to adopt a structure for waterproofing and dustproofing.

  According to this invention, even if the antenna of the wireless communication device is reliably separated from the wall surface by a predetermined distance by the bracket member, and there is a reinforcing bar in the mounting wall or there is electromagnetic interference from the indoor, It is possible to remove the influence on transmission / reception by the antenna of the wireless communication apparatus. In addition, since the antenna of the wireless communication device can be fixedly attached to the housing in a state where the highest performance can be obtained, it is easy to have a waterproof and dustproof structure.

  Hereinafter, an embodiment of an apparatus for attaching a wireless communication apparatus according to the present invention will be described with reference to the drawings, taking as an example a case where the apparatus is applied to a propane gas metering system.

  FIG. 2 is a block diagram for explaining the outline of the system configuration of the propane gas metering system. This meter reading system includes a meter reading center 4 for centrally managing the amount of propane gas used in each dwelling unit and a gas meter 5 for measuring the amount of propane bus used from a propane gas cylinder (not shown) of each dwelling unit. Meter reading data that is connected and receives a plurality of wireless communication devices 10 installed in each dwelling unit and gas usage data from the plurality of wireless communication devices 10 and sends them to the meter reading center 4 through the mobile phone network 6, for example. A transmission base unit 7 is provided.

  Between the meter-reading data transmission main | base station 7 and each radio | wireless communication apparatus 10, the data communication within the range of about 100 meters, for example is enabled using the radio wave of 429 MHz, for example. Since the range in which data communication centering on the meter-reading data transmission master unit 7 is possible is limited, the wireless communication between the meter-reading data transmission master unit 7 and the meter-reading data transmission master unit 7 is limited to a predetermined distance or more. When it becomes impossible, the relay unit 8 is used so that the gas usage data from the wireless communication device 10 is transmitted to the meter-reading data transmission base unit 7.

  As described above, the wireless communication device 10 according to this embodiment performs wireless communication using a relatively short-range radio wave. As the antenna 10A, a rod-shaped antenna is used, and the rod-shaped antenna is arranged in the vertical direction. The arranged state is assumed to have the highest transmission / reception performance.

  Accordingly, the wireless communication device 10 is attached to the wall surface of each dwelling unit near the gas meter 4 so that the antenna 10A faces in the vertical direction. It should be noted that the wall surface to which the wireless communication device 10 is attached is not limited to the outer wall surface facing the outside of the house but may be an indoor wall surface when the gas meter is installed indoors. .

  In this case, when the wireless communication device 10 is attached to a wall that does not contain a reinforcing bar or an environment wall that is not subject to electromagnetic interference from other electronic devices or electrical devices, the wireless communication device 10 itself is directly attached to the wall surface. It can be attached and fixed to.

  However, as described in the problem section, when the wireless communication device 10 is installed in a place where there is a reinforcing bar in the wall or where electromagnetic interference from other electronic devices or electric devices is received, this implementation is performed. In the embodiment, as shown in FIG. 1, the bracket member 20 is interposed between the wall surface 2 and the wireless communication device 10 so that the wireless communication device 10 is fixed to the wall surface 2.

  FIG. 1A is a view of a state in which the wireless communication device 10 is fixed to the wall surface 2 with the bracket member 20 interposed therebetween, as viewed from a direction orthogonal to the wall surface 2, and FIG. () Is the figure which looked at the fixed state from the direction along the wall surface 2. FIG. In FIG. 1A, the bracket member 20 is indicated by a dotted line.

  In this embodiment, first, the bracket member 20 is attached and fixed to the wall surface 2 with the attachment screws 31 and 32 shown in FIG. Next, the wireless communication device 10 is placed on the bracket member 20, and the wireless communication device 10 is fixed to the bracket member 20 with mounting screws 33 and 34.

  In this manner, the radio communication device 10 is fixed to the wall surface 2 with the bracket member 20 interposed therebetween, so that the rod-shaped antenna 10A existing in the antenna cover portion 11 is arranged in the vertical direction. However, it is separated from the wall surface 2 by the amount of the bracket member 20, and the problem of deterioration of the wireless communication performance is avoided.

  As will be described later, in this embodiment, the bracket member 20 has a structure in which a plurality of bracket members 20 can be joined together, and the single bracket member 20 has a problem of deterioration in wireless communication performance. When the separation distance from the wall surface 20 that can be avoided cannot be obtained, the plurality of bracket members 20 are interposed between the wireless communication device 10 and the wall surface 2 so that the wireless communication device 10 is fixed to the wall surface 2. By doing so, it is possible to reliably avoid the problem of deterioration in wireless communication performance.

  Next, the configuration of the wireless communication apparatus 10 of this embodiment and the configuration of the bracket member 20 will be described in more detail below.

[Wireless communication apparatus 10]
FIG. 3 is a diagram for explaining an overview of the wireless communication device 10, and FIG. 3A is a diagram viewed from a direction orthogonal to the wall surface 2 when the wireless communication device 10 is attached to the wall surface 2. In this specification, this is a front view of the wireless communication device 10. FIG. 3B is a side view of the wireless communication device 10, and FIG. 3C is a bottom view of the wireless communication device 10.

  FIG. 4 is a diagram for explaining each component of the wireless communication device 10. FIG. 4A is a diagram illustrating casing components of the wireless communication device 10, and FIG. 4B is a diagram illustrating circuit components inside the casing of the wireless communication device 10.

  The housing of the wireless communication device 10 of this embodiment has a rectangular box shape excluding the antenna cover portion 11, and is formed in a cylindrical shape so as to accommodate the circuit components shown in FIG. The housing body 12 is composed of a housing cover 13. In this embodiment, the housing body 12, the housing cover 13, and the antenna cover portion 11 are made of a resin that is a nonmagnetic material.

  A hollow frustoconical antenna cover 11 is integrally joined to the housing body 12. In this case, the hollow portion of the antenna cover portion 11 is joined so as to communicate with the inner space of the housing body 12. The casing component in which the antenna cover 11 is joined to the casing main body 12 is a component equivalent to an integral resin that does not require waterproofing and dustproofing. That is, no packing or shield member is required at the joint between the antenna cover 11 and the housing body 12.

  As shown in FIG. 4B, the circuit component 14 includes a printed wiring board 15 and a wiring board holding portion 16 made of, for example, resin. The printed wiring board 15 is fixed to the wiring board holding part 16 by, for example, screwing. On the printed wiring board 15, various electronic components 17a, 17b, 17c, 17d, 17e and the like are electrically connected.

  The rod-shaped antenna 10 </ b> A is connected to an antenna feeding point formed on the printed wiring board 15 and fixed to the printed wiring board 15.

  Then, the circuit component 14 having such a configuration is accommodated in the housing body 12 so that the rod-shaped antenna 10A is accommodated in the antenna cover portion 11. At this time, the end of the printed wiring board 15 on the side to which the rod-shaped antenna 10 </ b> A is connected is not shown, but is fitted into a fitting groove formed inside the housing body 12. It is configured to stop.

  The circuit component 14 is fixed to the housing body 12 by screwing the wiring board holding portion 16 to the housing body 12 from the back side as shown in FIG. Fixed. Although not shown, a lead wire connecting portion is provided on the bottom surface side of the casing of the printed wiring board 15, and a lead portion connected to the gas meter 5 is led out from the lead wire leading portion 161 shown in FIG. Is done.

  Then, after the circuit component 14 is fixed in the housing body 12, the housing cover 13 is fitted into the housing body 12, and the housing cover 13 is attached to the wiring board holding unit 16 by the screw 35. It is fixed to the housing body 12 by being screwed to the housing.

  In this embodiment, as shown in FIGS. 3 and 4, the housing of the wireless communication device 10 has a box shape with the extending direction of the antenna cover portion 11 as the longitudinal direction. 12 are provided with attachment portions 121 and 122 on the wall surface so as to protrude outward from the left and right side surfaces of the housing main body 12 at an intermediate portion in the longitudinal direction.

  As shown in FIGS. 3B and 3C, the two attachment portions 121 and 122 are provided on the back side of the casing of the wireless communication device 10. Mounting through-holes 123 and 124 are formed in a direction perpendicular to the rear surface of the communication device 10. The diameters of the mounting through holes 123 and 124 are set such that the screws 33 and 34 penetrate therethrough.

  When the wireless communication device 10 is fixed to the wall surface 2 without using the bracket member 20, the two attachment portions 121, the rear surface side of the wireless communication device 10 are in contact with the wall surface 2. The mounting screws 33 and 34 are passed through the through holes 123 and 124 of the 122, and the wireless communication device 10 is fixed to the wall surface 2 with the mounting screws 33 and 34.

[Bracket member 20]
The structure of the bracket member 20 of this embodiment is shown in FIG. FIG. 5A is a view as seen from a direction orthogonal to the wall surface 2 (attachment direction of the bracket member 20 to the wall surface 2) when the bracket member 20 is attached to the wall surface 2. A front view of the bracket member 20 is shown. 5B is a side view of the bracket member 20, FIG. 5C is a rear view of the bracket member 20, and FIG. 5D is a bottom view of the bracket member 20. FIG. 5E is a perspective view of the bracket member 20.

  The bracket member 20 is usually attached to the wall surface with the back side shown in FIG. However, it is also possible to attach the bracket member 20 to the wall surface with the front side of FIG.

  The bracket member 20 of this embodiment is made of a resin that is a non-magnetic material, similar to the housing of the wireless communication device 10, and as seen from FIG. Yes. And the bracket member 20 is provided with the recessed part 21 of the shape where the center part of the short side direction was greatly drilled in the rectangular shape from the other end side in the long side direction (longitudinal direction) of the said rectangular parallelepiped shape. It is said that.

  Due to the presence of the recess 21, the bracket member 20 is configured to include two rectangular wall portions 22 and 23 on both sides in the short side direction along the long side direction. The planes 22a and 23a on the front side of the two rectangular walls 22 and 23 are parallel to the back surface 201 of the bracket member 20, and as shown in FIGS. The distance from 201 (height of the bracket member 20) is h.

  This distance h suppresses the influence of electromagnetic waves leaking through the wall from the presence of normal reinforcing bars in the wall and other electronic devices and electrical devices, and the wireless communication performance of the antenna 10A of the wireless communication device 10 is The value is selected so that the antenna 10 </ b> A of the wireless communication apparatus 10 is separated from the wall surface so as to be sufficiently maintained.

  According to the inventor's research, it has been found that generally, when the antenna 10A is separated from the wall surface by 4 to 5 centimeters, in most cases, the radio communication performance of the antenna 10A is sufficiently maintained.

  Therefore, the height h of the bracket member 20 is set to a value that allows the antenna 10A to be separated from the wall surface by 4 to 5 centimeters in consideration of the position of the antenna 10A in the wireless communication device 10.

  The bracket member 20 of this embodiment has screw holes 211 and 212 for screwing and fixing the bracket member 20 to the wall surface 2 at one end and the other end in the long side direction of the bottom of the recess 21 located on the back side. Is provided. That is, the bracket member 20 has a fixed position with respect to the wall surface at the center in the short side direction at one end and the other end in the longitudinal direction.

  The bracket member 20 of this embodiment has two rectangular wall portions 22.23 so as to correspond to the two attachment portions 121 and 122 provided on the housing body 12 of the wireless communication device 10. The mounting portions 24 and 25 of the wireless communication device are provided so as to protrude outward from the central portion in the longitudinal direction.

  As shown in FIGS. 5D and 5E, the two first mounting portions 24 and 25 have flat surfaces 24a and 25a that are flush with the flat surfaces 22a and 23a, and the height of the bracket member 20. It is formed to extend to the back side over the entire direction.

  The mounting portions 24 and 25 are formed with through holes 241 and 251 that penetrate from the front side of the bracket member 20 to the back side. The distance between the two through holes 241 and 251 is equal to the distance d between the through holes 123 and 124 of the attachment portions 121 and 122 of the housing main body 12 of the wireless communication device 10. The diameters of the through holes 241 and 251 are set such that the screws 33 and 34 described above are screwed in.

  Moreover, the bracket member 20 of this embodiment is provided with the structure which can pile up and couple | bond the other bracket member 20 of the same structure in a height direction.

  That is, in the bracket member 20 of this embodiment, when viewed from the front side, one end and the other end in the longitudinal direction of the left rectangular wall portion 22 have through holes 221 penetrating from the front side to the back side, and 222 is provided. In this embodiment, the distance between the two through holes 221 and 222 is also selected to be equal to d. The diameters of the two through holes 221 and 222 are also set such that the screws 33 and 34 are screwed.

  On the other hand, at one end and the other end in the longitudinal direction of the rectangular wall portion 23 on the right side of the bracket member 20, the inside of the rectangular wall portion 23 (the concave portion 21 side) is U-shaped up to a position flush with the bottom of the concave portion 21. Through-holes 231 and 232 penetrating to the back side are provided in a portion that is formed in a shape and is flush with the bottom surface of the recess 21. In this case, the distance between the two through holes 231 and 232 is also set equal to d. The diameters of the two through holes 231 and 232 are set such that the same screws as the screws 33 and 34 pass through.

  In this case, the positions where the through holes 221 and 222 are formed and the positions where the through holes 231 and 232 are formed are positions corresponding to each other at the same distance from the end in the longitudinal direction of the bracket member 20. That is, the through hole 221 and the through hole 232 are the same when the other bracket member 20 is rotated 180 degrees on the front side surface of a certain bracket member 20 and the back side thereof is brought into contact. And the through hole 222 and the through hole 231 are overlapped at the same position.

  Further, in this embodiment, at the center position in the longitudinal direction of the left rectangular wall portion 22, the inner side (the concave portion 21 side) of the rectangular wall portion 23 is U-shaped up to a position flush with the bottom of the concave portion 21. A through-hole 223 that penetrates to the back side is provided in a portion that is formed in the bottom surface of the recess 21 and is flush with the bottom surface of the recess 21. The diameter of the through hole 223 is set to a size that allows the same screw as the screws 33 and 34 to pass therethrough.

  Further, a through hole 233 that penetrates from the front side to the back side is formed at a corresponding central position in the longitudinal direction of the right rectangular wall portion 23. The diameter of the through hole 233 is such that the same screw as the screws 33 and 34 is screwed.

  In this case, when a rotation axis is virtually assumed in the height direction passing through the center of the recess 21 on another surface of the bracket member 20, the other bracket member 20 is rotated 180 degrees around the rotation axis. In this state, when the back side is brought into contact with each other, the through hole 223 and the through hole 233 are configured to be at the same position.

  With the configuration as described above, when the other bracket member 20 is rotated 180 degrees as described above on the surface on the front side of a certain bracket member 20, the through hole 221 is brought into contact with the back surface side. And the through hole 232 are at the same position, the through hole 222 and the through hole 231 are at the same position, and the through hole 223 and the through hole 233 are overlapped at the same position.

  Therefore, the same screws as the screws 33 and 34 can be screwed in through the through holes at the same position, and the two bracket members 20 can be overlapped and joined in the height direction. Furthermore, similarly, it is possible to couple three or more bracket members 20 in the height direction by overlapping and joining the other bracket members 20 in the height direction. In this case, as described above, the bracket members 20 to be coupled need to be rotated 180 degrees as described above.

[Method of Fixing Wireless Communication Device 10 to Wall 2 Using Bracket Member 20]
As described above, the wireless communication device 10 uses the wall surface 2 by screwing the mounting screws through the through holes 123 and 124 in the two mounting portions 121 and 122 without using the bracket member 20. Can be attached to.

  However, when the wireless communication performance of the antenna 10A is not sufficiently obtained due to the influence of electromagnetic waves leaking from the reinforcing bars inside the wall surface and other devices from the inside, the bracket member 20 is placed between the wireless communication device 10 and the wall surface. To intervene.

  First, as shown in FIG. 6, the through holes 211 and 212 of the recess 21 are arranged in the vertical direction so that the back surface 201 side of the bracket member 20 is in contact with the wall surface, and the mounting screws 31 and 32 are connected to the recess 21. The bracket member 20 is fixed to the wall surface through the through holes 211 and 212 on the bottom surface and screwed into the wall surface.

  Next, the back surfaces of the mounting portions 121 and 122 of the wireless communication device 10 are brought into contact with the flat surfaces 24 a and 25 a of the first mounting portions 24 and 25 on the front side of the bracket member 20, and the through holes 123 and 124. And the through holes 241 and 251 are aligned so that the screws 33 and 34 are screwed into the through holes 241 and 251 through the through holes 123 and 124, respectively. Then, the wireless communication device 10 is fixed to the bracket member 20.

  Since the bracket member 20 is fixed to the wall surface, the wireless communication device 10 is thereby fixed to the wall surface. Then, the bracket member 20 is fixed to the wall surface in a state of being separated from the wall surface 2 by the height h, and it is possible to avoid the problem of deterioration of the wireless communication performance of the wireless communication device 10. .

  However, there are rare cases where the problem of deterioration in the wireless communication performance of the wireless communication device 10 cannot be sufficiently solved by simply inserting the single bracket member 20 in this way. In such a case, a plurality of bracket members 20 coupled in the height direction are inserted between the wall surface 2 and the wireless communication device 10 so that the wireless communication performance of the wireless communication device 10 is deteriorated. Avoid problems.

  An attachment method when two bracket members 20A and 20B are interposed between the wall surface 2 and the wireless communication device 10 will be described with reference to FIG.

  First, in FIG. 7, the bracket member 20A is screwed and fixed to the wall surface in the same manner as in FIG.

  Next, the bracket member 20B is superimposed on the bracket member 20A in the height direction. At this time, the bracket member 20B is centered on the rotation axis when the rotation axis is assumed in the height direction passing through the center of the recess 21. The through hole 221 and the through hole 232 are at the same position, the through hole 222 and the through hole 231 are at the same position, and the through hole 223 and the through hole 233 are further rotated. And be in the same position.

  Then, the same screws as the screws 33 and 34 are screwed through the through holes at the same position, and the two bracket members 20A and 20B are overlapped and joined in the height direction.

  Next, the wireless communication device 10 is fixed to the bracket member 20B with screws 33 and 34 in the same manner as when one bracket member 20 in FIG. 6 is inserted.

  As described above, the wireless communication device 10 is fixed to the wall surface 2 while being separated from the wall surface 2 by the total height 2h of the two bracket members 20A and 20B. It is possible to avoid the problem of deterioration in wireless communication performance.

  In this embodiment, the two attachment portions 121 and 122 protrude to the back side of the casing of the wireless communication device 10, but FIG. 3 (B) and FIG. 4 (A). As shown in FIG. 5, on the back side of the housing, protrusions 125, 126 and the like protruding from the back side are formed by the same height as the two attachment parts 121, 122. 126 and the like are in contact with the wall surface 2 and the surface of the bracket portion 20 so that the housing of the wireless communication device 10 can be stably fixed.

[Other mounting methods]
In the above description, when the bracket member 20 is attached and fixed to the wall surface 2, the through holes 211 and 212 of the recess 21 are arranged in the vertical direction so that the rear surface side of the bracket member 20 is in contact with the wall surface, so Although the attachment parts 121 and 122 of the apparatus 10 are attached to the attachment parts 24 and 25 of the bracket member 20, the following attachment method can also be employed in the bracket member 20 of this embodiment. .

  The first method is to attach the bracket member 20 to the wall surface with the through holes 211 and 212 of the recess 21 of the bracket member 20 aligned in the horizontal direction and with the back side of the bracket member 20 in contact with the wall surface. Fix it. That is, the bracket member 20 is attached and fixed to the wall surface in a state where it is rotated 90 times as in the case of FIGS. 6 and 7 described above.

  Next, the through holes 123 and 124 of the mounting portions 121 and 122 of the wireless communication device 10 and the through holes 221 and 222 of the bracket member 20 are aligned, and the rear surface of the wireless communication device 10 is placed on the front side surface of the bracket member 20. The wireless communication device 10 is attached and fixed to the bracket member 20 by screws 33 and 34 with the sides facing each other.

  In the above example, the second method is a method in which the back side of the bracket member 20 is in contact with the wall surface, whereas the front side of the bracket member 20 is in contact with the wall surface. In this case, a long screw is required when attaching the bracket member 20 to the wall surface. However, since the positional relationship between the through holes 221, 222, 223, 231, 232, 233, 241, and 251 is the same on the back side and the front side, the back side of the wireless communication device 10 and the back side of the bracket member 20 The wireless communication device 10 can be attached and fixed in the same manner as the attachment method described above, except that the side is in a state of being in contact with each other.

  According to this second method, when there is unevenness on the wall surface to be attached, the concave portion 21 avoids the uneven portion, and the wireless communication device 10 is inserted into the wall surface with the bracket member 20 interposed therebetween. Can be fixed.

[Other Embodiments and Modifications]
In the above-described embodiment, the distance between the through holes 221 and 222 and the distance between the through holes 231 and 232 used for coupling the bracket members 20 to each other is d. In the case where it is not considered to attach the member even when rotated by 90 degrees, the distance between the through holes 221 and 222 and the distance between the through holes 231 and 232 may not be d.

  Further, the through holes 221, 222, 233, 241, and 251 into which the screws are screwed do not need to be through holes when the aspect in which the bracket member 20 is attached with the front side facing the wall surface is not considered.

  Further, in the description of the above-described embodiment, the number of attachment portions of the wireless communication device 10 is two on the side surface of the housing, but two or more attachment portions may be provided. In such a case, the configuration of the bracket member 20 may be changed accordingly.

  Further, in the above-described embodiment, the antenna 10A is configured to be fixed to the printed wiring board and housed in the housing in order to obtain a waterproof and dustproof effect more firmly. It is not done. For example, the antenna may be attached to the housing in a so-called semi-fixed state in which the orientation of the antenna is adjustable and fixed in that state after adjustment, as in the conventional case.

  In the above-described embodiment, the wireless communication device is used in a system that wirelessly transmits the amount of propane gas used to the meter reading center. However, the present invention is not limited to this and is attached to a wall surface. Thus, the present invention can be applied to a case where all of the wireless communication devices that wirelessly communicate (transmit and / or receive) predetermined information with radio waves are attached to the wall surface.

It is a figure for demonstrating the outline | summary of embodiment of the attachment apparatus of the radio | wireless communication apparatus by this invention. It is a block diagram which shows the structural example of the system by which the radio | wireless communication apparatus of embodiment is used. It is a figure which shows the example of the external appearance of the radio | wireless communication apparatus of embodiment. It is a figure for demonstrating the structural example of the radio | wireless communication apparatus of embodiment. It is a figure for demonstrating the structural example of the bracket member of embodiment. It is a figure for demonstrating embodiment of the attachment apparatus of the radio | wireless communication apparatus by this invention. It is a figure for demonstrating embodiment of the attachment apparatus of the radio | wireless communication apparatus by this invention. It is a figure for demonstrating the prior art example of the attachment fixing method to the wall surface of a radio | wireless communication apparatus.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Wireless communication apparatus, 10A ... Antenna, 11 ... Antenna cover part, 20 ... Bracket member, 121, 122 ... Attachment part of wireless communication apparatus, 21 ... Recessed part, 211, 212 ... Through-hole for attachment to wall surface of bracket member , 24, 25 ... wireless communication device mounting parts, 221, 222, 223, 231, 232, 233, 241, 251 ... through holes

Claims (4)

A wireless communication device having an antenna for wirelessly communicating predetermined information with a predetermined partner device using radio waves and having a housing attached to the wall surface is fixed to the wall surface. An attachment device,
The wireless communication device housing and a bracket member made of a non-magnetic material for separating the wireless communication device housing from the wall surface by a predetermined distance,
The housing of the wireless communication device can fix the wireless communication device at at least two attachment positions with respect to the wall surface with the first surface side of the housing being in contact with the wall surface. Comprising at least two first attachment parts,
The bracket member allows the bracket member to be fixed at at least two attachment positions with respect to the wall surface in a state where the second surface side of the bracket member is in contact with the wall surface. And a third surface spaced from the second surface by the predetermined distance, and the third surface has at least two first surfaces with respect to the bracket member. At least two third attachment portions for fixing the housing of the wireless communication device by the attachment portion are provided,
By inserting the bracket member between the wall surface and the housing of the wireless communication device, the wireless communication device is fixed to the wall surface by separating the housing from the wall surface by the predetermined distance. A wireless communication device mounting device. The wireless communication device mounting apparatus according to claim 1,
The second surface side and the third surface of the bracket member are provided with a fourth attachment portion and a fifth attachment portion for coupling with other bracket members,
A plurality of the bracket members are coupled by the fifth attachment portion on the third surface of the one bracket member and the fourth attachment portion on the second surface side of the other bracket member, By inserting the combined plurality of bracket members between the wall surface and the housing of the wireless communication apparatus, the wall member is separated from the wall surface by several times the bracket members of the predetermined distance. An attachment device for a wireless communication device, wherein a housing is separated to fix the wireless communication device to the wall surface. The apparatus for mounting a wireless communication device according to claim 2,
The fourth attachment portion and the fifth attachment portion are provided at least two corresponding to the at least two first attachment portions,
The wireless communication device mounting device, wherein the housing of the wireless communication device can be fixed to the fourth mounting portion and the fifth mounting portion of the bracket member by the first mounting portion. . The wireless communication device mounting apparatus according to claim 1,
The antenna is a rod-shaped antenna, and is fixed to the wireless communication device in a state of extending in a direction along the wall surface when attached to the wall surface.

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