JP6897378B2

JP6897378B2 - Electronic equipment system and electronic equipment

Info

Publication number: JP6897378B2
Application number: JP2017135777A
Authority: JP
Inventors: 功一並松; 良行高橋; 佐藤　和也; 和也佐藤; 吉住　高久; 高久吉住
Original assignee: Fujitsu Ltd
Current assignee: Fujitsu Ltd
Priority date: 2017-07-11
Filing date: 2017-07-11
Publication date: 2021-06-30
Anticipated expiration: 2037-07-11
Also published as: JP2019019460A

Description

本明細書開示の発明は、電子機器システム及び電子機器に関する。 The inventions disclosed herein relate to electronic device systems and electronic devices.

磁石を用いることで、磁性体を含む所望の設置個所に、機械、器具、電子機器等の物品を設置することができる（例えば、特許文献１、特許文献２）。 By using a magnet, an article such as a machine, an instrument, or an electronic device can be installed at a desired installation location including a magnetic material (for example, Patent Document 1 and Patent Document 2).

特開２００２−２１７５５９号公報Japanese Unexamined Patent Publication No. 2002-217559 特開２００３−１５８３８５号公報Japanese Unexamined Patent Publication No. 2003-158385

ところで、物品の設置場所が衝撃を受けることがある。例えば、橋梁等は、車両が通過することで衝撃を受けることがあり、マンホール蓋は、車両の通過だけでなく、マンホールに設置するときに大きな衝撃を受けることがある。このように衝撃を受けることがある場所に物品を設置する場合、物品の脱落を防止する構造が必要となるが、このような構造を採用するための条件が整っていなければならず、物品の設置先が限定される。物品を設置できるように物品の形状等に応じて設置先の形状を変更することも考えられるが手間である。 By the way, the place where the article is installed may be shocked. For example, a bridge or the like may be impacted by the passage of a vehicle, and a manhole cover may be impacted not only by the passage of a vehicle but also when installed in a manhole. When installing an article in a place that may be impacted in this way, a structure that prevents the article from falling off is required, but the conditions for adopting such a structure must be met, and the article must be in place. The installation destination is limited. It is conceivable to change the shape of the installation destination according to the shape of the article so that the article can be installed, but it is troublesome.

このような状況下、物品の設置の自由度を高めるために、特許文献１や特許文献２のように磁石を用いて所望の設置場所に物品を取り付けることが考えられる。しかしながら、衝撃に耐え、物品の脱落を回避することができるほどの強力な磁石を用いることは、物品の取り外しが困難となり、取り付け位置の微調整すらできなくなり、現実的ではない。 Under such circumstances, in order to increase the degree of freedom in installing the article, it is conceivable to attach the article to a desired installation location using a magnet as in Patent Document 1 and Patent Document 2. However, it is not realistic to use a magnet strong enough to withstand an impact and prevent the article from falling off because it becomes difficult to remove the article and even fine adjustment of the mounting position becomes impossible.

１つの側面では、本明細書開示の電子機器システム及び電子機器は、支持体からの取り外しが容易に行える磁力で電子機器を取り付けるとともに、支持体が衝撃を受けたときの電子機器の支持体からの脱落を抑制することを課題とする。 In one aspect, the electronic device systems and electronic devices disclosed herein attach the electronic device with a magnetic force that can be easily removed from the support and from the support of the electronic device when the support is impacted. The challenge is to prevent the dropout of the.

１つの態様では、電子機器システムは、磁性体を含む支持体と、前記支持体と磁気結合された第１の磁石と、前記第１の磁石を介して前記支持体に着脱可能な状態で固定された筐体を有する電子機器本体と、前記支持体と磁気結合された第２の磁石と、前記第２の磁石を介して前記支持体に固定された補助取付部材と、を備え、前記補助取付部材は、前記筐体が備える被係合部に遊嵌され、前記筐体が前記支持体に固定された状態である場合に、前記被係合部との係合が解除され、前記筐体が前記支持体から離間した場合に、前記被係合部と係合し、前記筐体を、前記第１の磁石の磁力によって、前記支持体への固定状態に復帰可能な位置で支持する係合部を有する。 In one embodiment, the electronic device system is detachably fixed to the support via a support containing a magnetic material, a first magnet magnetically coupled to the support, and the first magnet. The auxiliary is provided with an electronic device main body having a housing, a second magnet magnetically coupled to the support, and an auxiliary mounting member fixed to the support via the second magnet. The mounting member is loosely fitted into the engaged portion included in the housing, and when the housing is fixed to the support, the engagement with the engaged portion is released and the housing is disengaged. When the body is separated from the support, it engages with the engaged portion and supports the housing at a position where it can be returned to the fixed state to the support by the magnetic force of the first magnet. It has an engaging part.

また、別の態様では、電子機器は、磁性体を含む支持体と磁気結合される第１の磁石と、前記第１の磁石を介して前記支持体に着脱可能な状態で固定される筐体と、前記支持体と磁気結合される第２の磁石と、前記第２の磁石を介して前記支持体に固定される補助取付部材と、を備え、前記補助取付部材は、前記筐体が備える被係合部に遊嵌され、前記筐体が前記支持体に固定された状態である場合に、前記被係合部との係合が解除され、前記筐体が前記支持体から離間した場合に、前記被係合部と係合し、前記筐体を、前記第１の磁石の磁力によって、前記支持体への固定状態に復帰可能な位置で支持する係合部を有する。 In another aspect, the electronic device is a housing that is detachably fixed to the support via a first magnet that is magnetically coupled to a support containing a magnetic material and the first magnet. A second magnet magnetically coupled to the support and an auxiliary mounting member fixed to the support via the second magnet are provided, and the auxiliary mounting member is included in the housing. When the housing is loosely fitted to the engaged portion and the housing is fixed to the support, the engagement with the engaged portion is released and the housing is separated from the support. In addition, it has an engaging portion that engages with the engaged portion and supports the housing at a position where it can be returned to a fixed state to the support by the magnetic force of the first magnet.

さらに、別の態様では、電子機器は、金属体に磁気結合された第１の磁石と、前記第１の磁石と磁気結合され、前記第１の磁石を介して前記金属体に固定される筐体を備える電子機器本体と、前記金属体の複数のリブに磁気結合された複数の磁石と、前記複数の磁石に磁気結合された金属製部材と、を備え、前記金属製部材は、前記第１の磁石が前記金属体から離間した場合に、前記第１の磁石の磁力によって前記電子機器本体ごと前記金属体に結合可能な距離以下で前記電子機器本体に摺動可能に係合されている。 Furthermore, housing in another aspect, an electronic device, in which the first magnet is magnetically coupled to the metal body, being the first magnet and the magnetic coupling, is fixed to the metal body through the first magnet an electronic device body with a body, a plurality of magnets that are magnetically coupled to the plurality of ribs of the metal body, and a metal member which is magnetically coupled to the plurality of magnets, the metallic member, the first when the first magnet is separated from the metal body, it is slidably engaged with the first of said electronic apparatus body by the magnetic force of the magnet below bondable distance to the metal body by the electronic apparatus main body ..

支持体からの取り外しが容易に行える磁力で電子機器を取り付けるとともに、支持体が衝撃を受けたときの電子機器の支持体からの脱落を抑制することができる。 The electronic device can be attached with a magnetic force that can be easily removed from the support, and the electronic device can be prevented from falling off from the support when the support is impacted.

図１は実施形態の電子機器システムを示す斜視図である。FIG. 1 is a perspective view showing an electronic device system of an embodiment. 図２は実施形態の電子機器を示す斜視図である。FIG. 2 is a perspective view showing the electronic device of the embodiment. 図３は実施形態の電子機器の平面図である。FIG. 3 is a plan view of the electronic device of the embodiment. 図４は実施形態の電子機器本体の斜視図である。FIG. 4 is a perspective view of the main body of the electronic device of the embodiment. 図５は実施形態の電子機器本体の斜視図である。FIG. 5 is a perspective view of the main body of the electronic device of the embodiment. 図６（Ａ）〜図６（Ｆ）は実施形態の電子機器本体の６面図である。6 (A) to 6 (F) are six views of the main body of the electronic device of the embodiment. 図７は実施形態の補助取付部材の斜視図である。FIG. 7 is a perspective view of the auxiliary mounting member of the embodiment. 図８は実施形態の補助取付部材の斜視図である。FIG. 8 is a perspective view of the auxiliary mounting member of the embodiment. 図９（Ａ）〜図９（Ｆ）は実施形態の補助取付部材の６面図である。9 (A) to 9 (F) are six views of the auxiliary mounting member of the embodiment. 図１０（Ａ）は電子機器本体がマンホール蓋に固定された状態のときの第１ピンと係合孔との位置関係を示す説明図であり、図１０（Ｂ）はマンホール蓋が衝撃を受けたときの第１ピンと係合孔との位置関係を示す説明図である。FIG. 10 (A) is an explanatory view showing the positional relationship between the first pin and the engaging hole when the electronic device main body is fixed to the manhole cover, and FIG. 10 (B) shows the manhole cover being impacted. It is explanatory drawing which shows the positional relationship between the 1st pin and the engagement hole at the time. 図１１（Ａ）は電子機器がマンホール蓋に固定される様子を、図３のＡ−Ａ線に相当する線で断面として示す説明図であり、図１１（Ｂ）はマンホール蓋に固定された電子機器を、図３のＡ−Ａ線に相当する線で断面として示す説明図である。FIG. 11A is an explanatory view showing how the electronic device is fixed to the manhole cover as a cross section with a line corresponding to the line AA in FIG. 3, and FIG. 11B is fixed to the manhole cover. It is explanatory drawing which shows the electronic device as a cross section by the line corresponding to line AA of FIG. 図１２はマンホール蓋が衝撃を受けたときの様子を、図３のＡ−Ａ線に相当する線で断面として示す説明図である。FIG. 12 is an explanatory view showing a state when the manhole cover is impacted as a cross section by a line corresponding to the line AA in FIG. 図１３は第１の磁石の磁力線の向きと第２の磁石の磁力線の向きを模式的に示す説明図である。FIG. 13 is an explanatory diagram schematically showing the directions of the magnetic force lines of the first magnet and the directions of the magnetic force lines of the second magnet. 図１４（Ａ）はマンホール蓋に電子機器が固定された様子を示す説明図であり、図１４（Ｂ）はマンホール蓋から電子機器を取り外す様子を示す説明図である。FIG. 14A is an explanatory view showing how the electronic device is fixed to the manhole cover, and FIG. 14B is an explanatory view showing how the electronic device is removed from the manhole cover. 図１５（Ａ）は他の電子機器がマンホール蓋に固定される様子を、図３のＡ−Ａ線に相当する線で断面として示す説明図であり、図１５（Ｂ）はマンホール蓋が衝撃を受けたときの他の電子機器の様子を、図３のＡ−Ａ線に相当する線で断面として示す説明図である。FIG. 15 (A) is an explanatory view showing how another electronic device is fixed to the manhole cover as a cross section with a line corresponding to the line AA of FIG. 3, and FIG. 15 (B) shows the impact of the manhole cover. It is explanatory drawing which shows the state of another electronic device at the time of receiving, as a cross section by the line corresponding to line AA of FIG. 図１６（Ａ）〜図１６（Ｄ）は第１の磁石と第２の磁石の配置の組み合わせの例を示す説明図である。16 (A) to 16 (D) are explanatory views showing an example of a combination of arrangements of the first magnet and the second magnet.

以下、本発明の実施形態について、添付図面を参照しつつ説明する。ただし、図面中、各部の寸法、比率等は、実際のものと完全に一致するようには図示されていない場合がある。また、図面によっては、説明の都合上、実際には存在する構成要素が省略されていたり、寸法が実際よりも誇張されて描かれていたりする場合がある。 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. However, in the drawings, the dimensions, ratios, etc. of each part may not be shown so as to completely match the actual ones. In addition, depending on the drawing, for convenience of explanation, components that actually exist may be omitted, or the dimensions may be exaggerated than they actually are.

（実施形態）
まず、図１乃至図１４を参照しつつ実施形態の電子機器システム１について説明する。図１は実施形態の電子機器システムを示す斜視図である。図２は実施形態の電子機器を示す斜視図である。図３は実施形態の電子機器の平面図である。図４は実施形態の電子機器本体の斜視図である。図５は実施形態の電子機器本体の斜視図である。図６（Ａ）〜図６（Ｆ）は実施形態の電子機器本体の６面図である。図６（Ａ）は正面図、図６（Ｂ）は平面図、図６（Ｃ）は底面図、図６（Ｄ）は右側面図、図６（Ｅ）は左側面図、図６（Ｆ）は背面図である。図７は実施形態の補助取付部材の斜視図である。図８は実施形態の補助取付部材の斜視図である。図９（Ａ）〜図９（Ｆ）は実施形態の補助取付部材の６面図である。図９（Ａ）は正面図、図９（Ｂ）は平面図、図９（Ｃ）は底面図、図９（Ｄ）は右側面図、図９（Ｅ）は左側面図、図９（Ｆ）は背面図である。図７は実施形態の補助取付部材の斜視図である。図１０（Ａ）は電子機器本体がマンホール蓋に固定された状態のときの第１ピンと係合孔との位置関係を示す説明図であり、図１０（Ｂ）はマンホール蓋が衝撃を受けたときの第１ピンと係合孔との位置関係を示す説明図である。図１１（Ａ）は電子機器がマンホール蓋に固定される様子を、図３のＡ−Ａ線に相当する線で断面として示す説明図であり、図１１（Ｂ）はマンホール蓋に固定された電子機器を、図３のＡ−Ａ線に相当する線で断面として示す説明図である。図１２はマンホール蓋が衝撃を受けたときの様子を、図３のＡ−Ａ線に相当する線で断面として示す説明図である。図１３は第１の磁石の磁力線の向きと第２の磁石の磁力線の向きを模式的に示す説明図である。図１４（Ａ）はマンホール蓋に電子機器が固定された様子を示す説明図であり、図１４（Ｂ）はマンホール蓋から電子機器を取り外す様子を示す説明図である。 (Embodiment)
First, the electronic device system 1 of the embodiment will be described with reference to FIGS. 1 to 14. FIG. 1 is a perspective view showing an electronic device system of an embodiment. FIG. 2 is a perspective view showing the electronic device of the embodiment. FIG. 3 is a plan view of the electronic device of the embodiment. FIG. 4 is a perspective view of the main body of the electronic device of the embodiment. FIG. 5 is a perspective view of the main body of the electronic device of the embodiment. 6 (A) to 6 (F) are six views of the main body of the electronic device of the embodiment. 6 (A) is a front view, FIG. 6 (B) is a plan view, FIG. 6 (C) is a bottom view, FIG. 6 (D) is a right side view, and FIG. 6 (E) is a left side view. F) is a rear view. FIG. 7 is a perspective view of the auxiliary mounting member of the embodiment. FIG. 8 is a perspective view of the auxiliary mounting member of the embodiment. 9 (A) to 9 (F) are six views of the auxiliary mounting member of the embodiment. 9 (A) is a front view, FIG. 9 (B) is a plan view, FIG. 9 (C) is a bottom view, FIG. 9 (D) is a right side view, and FIG. 9 (E) is a left side view. F) is a rear view. FIG. 7 is a perspective view of the auxiliary mounting member of the embodiment. FIG. 10 (A) is an explanatory view showing the positional relationship between the first pin and the engaging hole when the electronic device main body is fixed to the manhole cover, and FIG. 10 (B) shows the manhole cover being impacted. It is explanatory drawing which shows the positional relationship between the 1st pin and the engagement hole at the time. FIG. 11A is an explanatory view showing how the electronic device is fixed to the manhole cover as a cross section with a line corresponding to the line AA in FIG. 3, and FIG. 11B is fixed to the manhole cover. It is explanatory drawing which shows the electronic device as a cross section by the line corresponding to line AA of FIG. FIG. 12 is an explanatory view showing a state when the manhole cover is impacted as a cross section by a line corresponding to the line AA in FIG. FIG. 13 is an explanatory diagram schematically showing the directions of the magnetic force lines of the first magnet and the directions of the magnetic force lines of the second magnet. FIG. 14A is an explanatory view showing how the electronic device is fixed to the manhole cover, and FIG. 14B is an explanatory view showing how the electronic device is removed from the manhole cover.

電子機器システム１は、支持体の一例であるマンホール蓋５０と、このマンホール蓋５０に装着された電子機器２を備えている。電子機器システム１は、地下に埋設された下水道管と連通するマンホールに設置され、下水道管及びマンホール内の各種データを収集し、下水道管内、マンホール内の状況を監視する。収集されるデータは、例えば、マンホール内の水位等である。電子機器２の電子機器本体３には、電源、記憶部及びアンテナ等が装備されている。電子機器本体３には、各種センサが接続され、これらのセンサによって取得されたデータは、記憶部に記憶され、また、アンテナを介して外部の装置に送信される。 The electronic device system 1 includes a manhole cover 50, which is an example of a support, and an electronic device 2 mounted on the manhole cover 50. The electronic device system 1 is installed in a manhole that communicates with a sewer pipe buried underground, collects various data in the sewer pipe and the manhole, and monitors the situation in the sewer pipe and the manhole. The data collected is, for example, the water level in the manhole. The electronic device main body 3 of the electronic device 2 is equipped with a power supply, a storage unit, an antenna, and the like. Various sensors are connected to the electronic device main body 3, and the data acquired by these sensors is stored in the storage unit and transmitted to an external device via the antenna.

マンホール蓋５０等の支持体は、磁石によって吸着される性質を備えた磁性体を含む。すなわち、磁石の磁力によって、磁石が吸着できるものは、支持体として選定することができる。このため、例えば、鋼鉄製の橋梁等は、支持体とすることができる。また、振動衝撃を受けるものが支持体として想定される。本実施形態におけるマンホール蓋５０等の支持体は、金属体である。 The support such as the manhole cover 50 includes a magnetic material having a property of being attracted by a magnet. That is, a magnet that can be attracted by the magnetic force of the magnet can be selected as the support. Therefore, for example, a steel bridge or the like can be used as a support. In addition, a support that receives vibration and shock is assumed. The support such as the manhole cover 50 in this embodiment is a metal body.

マンホール蓋５０は、円形板状の本体部５０ａを備える。ただし、本体部５０ａは、円形に限定されない。本体部５０ａは、天井面５０ａ１を備える。天井面５０ａ１は、マンホール蓋５０がマンホールに装着された状態となるときに、マンホール内に位置することとなる面である。なお、天井面５０ａ１の裏面側となり、マンホール蓋５０がマンホールに装着されたときにマンホール外に位置する面を天面５０ａ２と称する。マンホール蓋５０は、マンホールに設置するときや、天面５０ａ２上を車両が通過するときなどに衝撃が加わる。 The manhole cover 50 includes a circular plate-shaped main body 50a. However, the main body 50a is not limited to a circular shape. The main body 50a includes a ceiling surface 50a1. The ceiling surface 50a1 is a surface that will be located in the manhole when the manhole cover 50 is attached to the manhole. The surface on the back surface side of the ceiling surface 50a1 and located outside the manhole when the manhole cover 50 is mounted on the manhole is referred to as a top surface 50a2. The manhole cover 50 receives an impact when it is installed in a manhole or when a vehicle passes over the top surface 50a2.

本体部５０ａの天井面５０ａ１には、格子状に配置されたリブ５０ｂが設けられている。リブ５０ｂにより、天井面５０ａ１は、領域ａ１〜領域ａ９までの９つの領域に区分けされている。図１を参照すると、領域ａ１、領域ａ３、領域ａ７及び領域ａ９は、概ね扇形の形状となっており、それ以外の領域ａ２、ａ４〜ａ６及びａ８は、概ね矩形の形状となっている。矩形の領域のうち、領域ａ２及び領域ａ８には、ヒンジ５１等が設けられている。このため、電子機器２は、領域ａ４〜領域ａ６のいずれかに装着する。本実施形態では、領域ａ４に電子機器２が固定され、設置されている。本体部５０ａの中心部に位置する領域ａ５を囲うリブ５０ｂは、同一高さであるが、領域ａ４の両側に位置するリブ５０ｂは、本体部５０ａの中心側から周縁側に向かうに従って、なだらかに低くなっている。すなわち、領域ａ４の両側に位置するリブ５０ｂのリブ頂面５０ｂ２は、なだらかに傾斜している。リブ頂面５０ｂ２は、リブ５０ｂの稜線に沿う面である。 Ribs 50b arranged in a grid pattern are provided on the ceiling surface 50a1 of the main body 50a. The ceiling surface 50a1 is divided into nine regions from regions a1 to regions a9 by the ribs 50b. Referring to FIG. 1, the region a1, the region a3, the region a7 and the region a9 have a substantially fan-shaped shape, and the other regions a2, a4 to a6 and a8 have a substantially rectangular shape. Of the rectangular regions, the regions a2 and a8 are provided with hinges 51 and the like. Therefore, the electronic device 2 is mounted in any of the areas a4 to a6. In the present embodiment, the electronic device 2 is fixed and installed in the area a4. The ribs 50b surrounding the region a5 located at the center of the main body 50a have the same height, but the ribs 50b located on both sides of the region a4 gently move from the center side to the peripheral edge side of the main body 50a. It's getting low. That is, the rib top surfaces 50b2 of the ribs 50b located on both sides of the region a4 are gently inclined. The rib top surface 50b2 is a surface along the ridgeline of the rib 50b.

電子機器２は、電子機器本体３と、この電子機器本体３に装着された補助取付部材１０を備えている。本実施形態における補助取付部材１０は、金属製部材である。図４乃至図６（Ｆ）を参照すると、電子機器本体３は、支持体としてのマンホール蓋５０と磁気結合される第１の磁石５ａ、５ｂを備える。第１の磁石５ａ、５ｂは、電子機器本体３が備える筐体４をマンホール蓋５０の本体部５０ａに着脱可能な状態で固定する。 The electronic device 2 includes an electronic device main body 3 and an auxiliary mounting member 10 mounted on the electronic device main body 3. The auxiliary mounting member 10 in this embodiment is a metal member. Referring to FIGS. 4 to 6 (F), the electronic device main body 3 includes first magnets 5a and 5b that are magnetically coupled to the manhole cover 50 as a support. The first magnets 5a and 5b fix the housing 4 included in the electronic device main body 3 to the main body 50a of the manhole cover 50 in a detachable state.

本実施形態における筐体４は、側壁部４ａ、４ｂ、底板部４ｃ及び天板部４ｄを備える。本実施形態における第１の磁石５ａ、５ｂは、筐体４の底板部４ｃに設けられた第１脚部４ｃ１と第２脚部４ｃ２にそれぞれ装着されている。第１脚部４ｃ１と第２脚部４ｃ２は、第１の磁石５ａ、５ｂの高さ方向の位置合わせを行っている。第１の磁石５ａ、５ｂは、本体部５０ａの天井面５０ａ１に磁気結合、すなわち、第１の磁石５ａ、５ｂの磁力によって吸着される。 The housing 4 in the present embodiment includes side wall portions 4a and 4b, a bottom plate portion 4c, and a top plate portion 4d. The first magnets 5a and 5b in the present embodiment are attached to the first leg portion 4c1 and the second leg portion 4c2 provided on the bottom plate portion 4c of the housing 4, respectively. The first leg portion 4c1 and the second leg portion 4c2 are aligned in the height direction of the first magnets 5a and 5b. The first magnets 5a and 5b are magnetically coupled to the ceiling surface 50a1 of the main body 50a, that is, are attracted by the magnetic force of the first magnets 5a and 5b.

第１の磁石５ａは、ネジ６により第１脚部４ｃ１に固定されている。第１の磁石５ｂは、同様にネジ６により第２脚部４ｃ２に固定されている。これにより、筐体４は、第１の磁石５ａ、５ｂを介してマンホール蓋５０の本体部５０ａに着脱可能な状態で固定される。このように、本実施形態では、第１の磁石５ａ、５ｂは、ネジ６で筐体４に固定されているため、筐体４自体は、磁性体、すなわち、磁石によって吸着される性質を備えていなくてもよい。筐体４自体が磁性体を含む場合、第１の磁石５ａ、５ｂは、マンホール蓋５０の本体部５０ａと筐体４の双方に、その磁力によって吸着（磁気結合）することで、筐体４を本体部５０ａに着脱可能な状態で固定することができる。このような形態については、後に詳述する。 The first magnet 5a is fixed to the first leg portion 4c1 by a screw 6. Similarly, the first magnet 5b is fixed to the second leg portion 4c2 by the screw 6. As a result, the housing 4 is fixed to the main body 50a of the manhole cover 50 via the first magnets 5a and 5b in a detachable state. As described above, in the present embodiment, since the first magnets 5a and 5b are fixed to the housing 4 by the screws 6, the housing 4 itself has a property of being attracted by a magnetic material, that is, a magnet. It does not have to be. When the housing 4 itself contains a magnetic material, the first magnets 5a and 5b are attracted (magnetically coupled) to both the main body 50a and the housing 4 of the manhole cover 50 by the magnetic force thereof, so that the housing 4 Can be fixed to the main body 50a in a detachable state. Such a form will be described in detail later.

なお、本実施形態では、第１の磁石５ａと、第１の磁石５ｂの２つの磁石を用いているが、第１の磁石の数は、これに限定されない。また、第１の磁石５ａ、５ｂを筐体４に固定する場合、その固定手段は、ネジ６に限定されず、他の公知の手段を用いてもよい。 In this embodiment, two magnets, a first magnet 5a and a first magnet 5b, are used, but the number of the first magnets is not limited to this. Further, when the first magnets 5a and 5b are fixed to the housing 4, the fixing means is not limited to the screw 6, and other known means may be used.

筐体４が備える側壁部４ａには、第１孔４ａ１と第２孔４ａ２が設けられている。第１孔４ａ１には、図２等に表れているように第１ピン８ａが取り付けられる。第２孔４ａ２には、第２ピン８ｂが取り付けられる。このように、筐体４は、それぞれ側方に突設された第１ピン８ａと第２ピン８ｂとを備える。第１ピン８ａは、後に詳説する補助取付部材１０が備える板状部１２に対する被係合部として機能する。一方、第２ピン８ｂは、第１ピン８ａから離れた位置に突設されており、後に詳説するガイド溝１２ｂに挿し込まれ、ガイド溝１２ｂに対し、相対移動する。 The side wall portion 4a included in the housing 4 is provided with a first hole 4a1 and a second hole 4a2. The first pin 8a is attached to the first hole 4a1 as shown in FIG. 2 and the like. A second pin 8b is attached to the second hole 4a2. As described above, the housing 4 includes the first pin 8a and the second pin 8b, which are projected laterally, respectively. The first pin 8a functions as an engaged portion with respect to the plate-shaped portion 12 included in the auxiliary mounting member 10 described in detail later. On the other hand, the second pin 8b is projected at a position away from the first pin 8a, is inserted into the guide groove 12b described in detail later, and moves relative to the guide groove 12b.

筐体４が備える側壁部４ｂは、側壁部４ａと平行に配置されており、側壁部４ａと同様に、第１孔４ｂ１と第２孔４ｂ２が設けられている。第１孔４ｂ１には、図２等に表れているように第１ピン９ａが取り付けられる。第２孔４ｂ２には、第２ピン９ｂが取り付けられる。このように、筐体４は、それぞれ側方に突設された第１ピン９ａと第２ピン９ｂとを備える。第１ピン９ａは、後に詳説する補助取付部材１０が備える板状部１４に対する被係合部として機能する。一方、第２ピン９ｂは、第１ピン９ａから離れた位置に突設されており、後に詳説するガイド溝１４ｂに挿し込まれ、ガイド溝１４ｂに対し、相対移動する。 The side wall portion 4b included in the housing 4 is arranged in parallel with the side wall portion 4a, and like the side wall portion 4a, the first hole 4b1 and the second hole 4b2 are provided. The first pin 9a is attached to the first hole 4b1 as shown in FIG. 2 and the like. A second pin 9b is attached to the second hole 4b2. As described above, the housing 4 includes the first pin 9a and the second pin 9b, which are projected laterally, respectively. The first pin 9a functions as an engaged portion with respect to the plate-shaped portion 14 included in the auxiliary mounting member 10 described in detail later. On the other hand, the second pin 9b is projected at a position away from the first pin 9a, is inserted into the guide groove 14b described in detail later, and moves relative to the guide groove 14b.

図４等を参照すると、筐体４には、ケーブル接続部４ｅが設けられている。ケーブル接続部４ｅは、他端側にセンサが装備されたケーブルが挿し込まれることで、マンホール内の状況を監視するための各種データを収集できるようになっている。板状部１２には、ケーブルを通過させるための窓部１２ｃが設けられている。 With reference to FIG. 4 and the like, the housing 4 is provided with a cable connecting portion 4e. By inserting a cable equipped with a sensor on the other end side of the cable connection portion 4e, various data for monitoring the situation in the manhole can be collected. The plate-shaped portion 12 is provided with a window portion 12c for passing a cable.

つぎに、図７〜図１０（Ｂ）を参照すると、補助取付部材１０は、支持体としてのマンホール蓋５０と磁気結合される第２の磁石１６ａ、１６ｂを備える。第２の磁石１６ａ、１６ｂは、補助取付部材１０をマンホール蓋５０の本体部５０ａに固定する。 Next, referring to FIGS. 7 to 10 (B), the auxiliary mounting member 10 includes second magnets 16a and 16b that are magnetically coupled to the manhole cover 50 as a support. The second magnets 16a and 16b fix the auxiliary mounting member 10 to the main body 50a of the manhole cover 50.

補助取付部材１０は、第１腕部１１を備える。第１腕部１１には、板状部１２が連設されている。板状部１２は、電子機器２において筐体４が備える側壁部４ａと対向配置される。板状部１２は、側壁部４ａに設けられた第１ピン８ａの係合部となる。すなわち、板状部１２には、係合孔１２ａが設けられており、この係合孔１２ａに第１ピン８ａを挿通させる。ここで、図１０（Ａ）を参照すると、係合孔１２ａの直径Ｒ１は、第１ピン８ａの軸径Ｒ２よりも大きい。このような直径Ｒ１と軸径Ｒ２との関係とすることで、板状部１２と第１ピン８ａとが遊嵌された状態とすることができる。 The auxiliary mounting member 10 includes a first arm portion 11. A plate-shaped portion 12 is continuously provided on the first arm portion 11. The plate-shaped portion 12 is arranged to face the side wall portion 4a included in the housing 4 in the electronic device 2. The plate-shaped portion 12 serves as an engaging portion of the first pin 8a provided on the side wall portion 4a. That is, the plate-shaped portion 12 is provided with an engaging hole 12a, and the first pin 8a is inserted through the engaging hole 12a. Here, referring to FIG. 10A, the diameter R1 of the engaging hole 12a is larger than the shaft diameter R2 of the first pin 8a. By having such a relationship between the diameter R1 and the shaft diameter R2, the plate-shaped portion 12 and the first pin 8a can be loosely fitted.

補助取付部材１０は、第２腕部１３を備える。第２腕部１３には、板状部１４が連設されている。板状部１４は、電子機器２において筐体４が備える側壁部４ｂと対向配置される。板状部１４は、側壁部４ｂに設けられた第１ピン９ａの係合部となる。すなわち、板状部１４には、係合孔１４ａが設けられており、この係合孔１４ａに第１ピン９ａを挿通させる。ここで、図１０（Ａ）を参照すると、係合孔１４ａの直径Ｒ１は、第１ピン９ａの軸径Ｒ２よりも大きい。このような直径Ｒ１と軸径Ｒ２との関係とすることで、板状部１４と第１ピン９ａとが遊嵌された状態とすることができる。 The auxiliary mounting member 10 includes a second arm portion 13. A plate-shaped portion 14 is continuously provided on the second arm portion 13. The plate-shaped portion 14 is arranged to face the side wall portion 4b included in the housing 4 in the electronic device 2. The plate-shaped portion 14 serves as an engaging portion of the first pin 9a provided on the side wall portion 4b. That is, the plate-shaped portion 14 is provided with an engaging hole 14a, and the first pin 9a is inserted through the engaging hole 14a. Here, referring to FIG. 10A, the diameter R1 of the engaging hole 14a is larger than the shaft diameter R2 of the first pin 9a. By having such a relationship between the diameter R1 and the shaft diameter R2, the plate-shaped portion 14 and the first pin 9a can be loosely fitted.

このように、第１ピン８ａ、９ａは、それぞれ係合孔１２ａ、１４ａに挿通され、補助取付部材１０は、第１ピン８ａ、９ａに対して遊嵌された状態となる。また、第１腕部１１と第２腕部１３は、それぞれ、第１ピン８ａ、９ａを軸部材として揺動可能に取り付けられた状態となる。第１腕部１１には、第２の磁石１６ａが配置されている。第２の磁石１６ａは、第１腕部１１に沿って設けられている。第２腕部１３にも同様に、第２の磁石１６ｂが配置されている。第２の磁石１６ｂは、第２腕部１３に沿って設けられている。第２の磁石１６ａ、１６ｂは、それぞれリブ頂面５０ｂ２に磁気結合する。 In this way, the first pins 8a and 9a are inserted into the engaging holes 12a and 14a, respectively, and the auxiliary mounting member 10 is in a state of being loosely fitted to the first pins 8a and 9a. Further, the first arm portion 11 and the second arm portion 13 are in a state of being swingably attached with the first pins 8a and 9a as shaft members, respectively. A second magnet 16a is arranged on the first arm portion 11. The second magnet 16a is provided along the first arm portion 11. Similarly, the second magnet 16b is arranged on the second arm portion 13. The second magnet 16b is provided along the second arm portion 13. The second magnets 16a and 16b are magnetically coupled to the rib top surface 50b2, respectively.

第２の磁石１６ａは、ネジ１７により第１腕部１１に固定されている。第２の磁石１６ｂは、同様にネジ１７により第２腕部１３に固定されている。これにより、第１腕部１１と第２腕部１３は、第２の磁石１６ａ、１６ｂを介してマンホール蓋５０の本体部５０ａに固定される。このように、本実施形態では、第２の磁石１６ａ、１６ｂは、ネジ１７でそれぞれ第１腕部１１と第２腕部１３に固定されている。このため、第１腕部１１自体、第２腕部１３自体は、強磁性体、すなわち、磁石によって吸着される性質を備えていなくてもよい。第１腕部１１自体、第２腕部１３自体が強磁性体を含む場合には、第２の磁石１６ａ、１６ｂは、マンホール蓋５０の本体部５０ａと補助取付部材１０の双方に、その磁力によって吸着（磁気結合）する。これにより、補助取付部材１０を本体部５０ａに固定することができる。 The second magnet 16a is fixed to the first arm portion 11 by a screw 17. The second magnet 16b is similarly fixed to the second arm portion 13 by the screw 17. As a result, the first arm portion 11 and the second arm portion 13 are fixed to the main body portion 50a of the manhole cover 50 via the second magnets 16a and 16b. As described above, in the present embodiment, the second magnets 16a and 16b are fixed to the first arm portion 11 and the second arm portion 13 by the screws 17, respectively. Therefore, the first arm portion 11 itself and the second arm portion 13 itself do not have to have a ferromagnet, that is, a property of being attracted by a magnet. When the first arm portion 11 itself and the second arm portion 13 itself contain a ferromagnetic material, the second magnets 16a and 16b have magnetic forces on both the main body portion 50a of the manhole cover 50 and the auxiliary mounting member 10. Adsorbs (magnetically bonds) by. Thereby, the auxiliary mounting member 10 can be fixed to the main body portion 50a.

なお、本実施形態では、第２の磁石１６ａと、第２の磁石１６ｂの２つの磁石を用いているが、第２の磁石の数は、これに限定されない。また、第２の磁石１６ａ、１６ｂを第１腕部１１と第２腕部１３に固定する場合、その固定手段は、ネジ１７に限定されず、他の公知の手段を用いてもよい。さらに、本実施形態では、二つの腕部を備えているが、電子機器本体３の重量や形状に応じて腕部の数を変更してもよい。 In the present embodiment, two magnets, a second magnet 16a and a second magnet 16b, are used, but the number of the second magnets is not limited to this. Further, when the second magnets 16a and 16b are fixed to the first arm portion 11 and the second arm portion 13, the fixing means is not limited to the screw 17, and other known means may be used. Further, although the present embodiment includes two arms, the number of arms may be changed according to the weight and shape of the electronic device main body 3.

このように、電子機器２は、電子機器本体３が第１の磁石５ａ、５ｂを介して本体部５０ａに磁気結合され、補助取付部材１０が第２の磁石１６ａ、１６ｂを介して本体部５０ａに磁気結合されることで、マンホール蓋５０に固定される。 In this way, in the electronic device 2, the electronic device main body 3 is magnetically coupled to the main body 50a via the first magnets 5a and 5b, and the auxiliary mounting member 10 is magnetically coupled to the main body 50a via the second magnets 16a and 16b. It is fixed to the manhole cover 50 by being magnetically coupled to the manhole cover 50.

板状部１２は、第１ピン８ａと遊嵌され、板状部１４は、第１ピン９ａと遊嵌されている。このため、筐体４、すなわち、電子機器本体３がマンホール蓋５０に固定された状態である場合に、図１０（Ａ）に示すように、第１ピン８ａと板状部１２との係合、第１ピン９ａと板状部１４との係合は解除される。従って、第１の磁石５ａ、５ｂは、その磁力によって電子機器本体３を保持した状態となっている。すなわち、第１の磁石５ａ、５ｂは、電子機器本体３の重量を支持しており、補助取付部材１０の重量は保持していない。一方、第２の磁石１６ａ、１６ｂは、その磁力によって補助取付部材１０を保持した状態となっている。すなわち、第２の磁石１６ａ、１６ｂは、補助取付部材１０の重量を支持しており、電子機器本体３の重量は保持していない。 The plate-shaped portion 12 is loosely fitted with the first pin 8a, and the plate-shaped portion 14 is loosely fitted with the first pin 9a. Therefore, when the housing 4, that is, the electronic device main body 3 is fixed to the manhole cover 50, the first pin 8a and the plate-shaped portion 12 are engaged with each other as shown in FIG. 10 (A). , The engagement between the first pin 9a and the plate-shaped portion 14 is released. Therefore, the first magnets 5a and 5b are in a state of holding the electronic device main body 3 by the magnetic force thereof. That is, the first magnets 5a and 5b support the weight of the electronic device main body 3 and do not hold the weight of the auxiliary mounting member 10. On the other hand, the second magnets 16a and 16b are in a state of holding the auxiliary mounting member 10 by the magnetic force thereof. That is, the second magnets 16a and 16b support the weight of the auxiliary mounting member 10, and do not hold the weight of the electronic device main body 3.

これに対し、筐体４、すなわち、電子機器本体３がマンホール蓋５０から離間した場合に、図１０（Ｂ）に示すように、第１ピン８ａと板状部１２とが係合し、第１ピン９ａと板状部１４とが係合する。そして、板状部１２及び板状部１４は、第１ピン８ａ、９ａを介して、筐体４を、第１の磁石５ａ、５ｂの磁力によって、マンホール蓋５０への固定状態に復帰可能な位置で支持する。ここで、電子機器本体３がマンホール蓋５０から離間した場合とは、例えば、マンホール蓋５０をマンホールに装着した瞬間等であって、マンホール蓋５０が衝撃を受け、電子機器本体３がマンホール蓋５０から一時的に脱落した場合である。 On the other hand, when the housing 4, that is, the electronic device main body 3 is separated from the manhole cover 50, the first pin 8a and the plate-shaped portion 12 are engaged with each other as shown in FIG. The pin 1 9a and the plate-shaped portion 14 are engaged with each other. Then, the plate-shaped portion 12 and the plate-shaped portion 14 can return the housing 4 to the fixed state to the manhole cover 50 by the magnetic force of the first magnets 5a and 5b via the first pins 8a and 9a. Support in position. Here, the case where the electronic device main body 3 is separated from the manhole cover 50 is, for example, at the moment when the manhole cover 50 is attached to the manhole, the manhole cover 50 is impacted, and the electronic device main body 3 is subjected to the manhole cover 50. This is the case when the manhole is temporarily dropped from.

電子機器本体３がマンホール蓋５０から一時的に脱落した場合、電子機器本体３は、第１ピン８ａが板状部１２と係合し、また、第１ピン９ａが板状部１４と係合する。このため、電子機器本体３は、マンホール蓋５０への固定状態に復帰可能な位置で支持される。電子機器本体３がマンホール蓋５０から離間した状態となった場合であっても、第１の磁石５ａ、５ｂは、電子機器本体３をマンホール蓋５０へ吸着するための磁力を発し続ける。このため、板状部１２、１４で支持された筐体４（電子機器本体３）は、第１の磁石５ａ、５ｂの磁力によって、即座に、マンホール蓋５０への固定状態に復帰することができる。なお、係合孔１２ａ、１４ａの直径Ｒ１は、脱落した電子機器本体３が第１の磁石５ａ、５ｂの磁力によって固定状態に復帰することができる範囲内で設定されている。すなわち、軸径Ｒ２の第１ピン８ａ、９ａの係合孔１２ａ、１４ａ内での移動可能量は、脱落した電子機器本体３が第１の磁石５ａ、５ｂの磁力によって固定状態に復帰することができる範囲内で設定されている。換言すると、補助取付部材１０は、第１の磁石５ａ、５ｂがマンホール蓋５０から離間した場合に、第１の磁石５ａ、５ｂの磁力によって電子機器本体３ごとマンホール蓋５０に結合可能な距離以下に保つように電子機器本体３に摺動可能に係合されている。 When the electronic device main body 3 temporarily falls off from the manhole cover 50, the first pin 8a of the electronic device main body 3 engages with the plate-shaped portion 12, and the first pin 9a engages with the plate-shaped portion 14. To do. Therefore, the electronic device main body 3 is supported at a position where it can be returned to the fixed state to the manhole cover 50. Even when the electronic device main body 3 is separated from the manhole cover 50, the first magnets 5a and 5b continue to generate a magnetic force for attracting the electronic device main body 3 to the manhole cover 50. Therefore, the housing 4 (electronic device main body 3) supported by the plate-shaped portions 12 and 14 can be immediately returned to the fixed state to the manhole cover 50 by the magnetic force of the first magnets 5a and 5b. it can. The diameters R1 of the engaging holes 12a and 14a are set within a range in which the dropped electronic device main body 3 can be returned to the fixed state by the magnetic force of the first magnets 5a and 5b. That is, the movable amount of the first pins 8a and 9a of the shaft diameter R2 in the engaging holes 12a and 14a is such that the dropped electronic device main body 3 returns to the fixed state by the magnetic force of the first magnets 5a and 5b. It is set within the range that can be done. In other words, when the first magnets 5a and 5b are separated from the manhole cover 50, the auxiliary mounting member 10 is equal to or less than a distance that can be coupled to the manhole cover 50 together with the electronic device main body 3 by the magnetic force of the first magnets 5a and 5b. It is slidably engaged with the electronic device main body 3 so as to keep it at.

このように、本実施形態の電子機器システム１では、マンホール蓋５０が衝撃を受けたときの電子機器本体３の一時的な脱落を許容している。このため、必要以上に大きな磁力を発揮する磁石を採用しなくてもよい。この結果、マンホール蓋５０からの取り外しが容易に行える磁力を発揮する範囲内で第１の磁石５ａ、５ｂを選定することができる。一方、第２の磁石１６ａ、１６ｂは、補助取付部材１０を保持できるとともに、一時的に脱落した電子機器本体３を支持できるだけの磁力を発揮することができればよい。一時的に脱落した電子機器本体３を支持する場合、電子機器本体３には、第１の磁石５ａ、５ｂの磁力も作用しているため、第２の磁石１６ａ、１６ｂは、電子機器本体３の重量のすべてを支える必要はない。このため、第２の磁石１６ａ、１６ｂの磁力も取り外しが容易になるような適切な範囲内で選定すればよく、必要以上に大きな磁力を発揮する磁石を選定しなくてもよい。 As described above, in the electronic device system 1 of the present embodiment, the electronic device main body 3 is allowed to temporarily fall off when the manhole cover 50 is impacted. Therefore, it is not necessary to use a magnet that exerts an unnecessarily large magnetic force. As a result, the first magnets 5a and 5b can be selected within a range that exerts a magnetic force that can be easily removed from the manhole cover 50. On the other hand, the second magnets 16a and 16b need only be able to hold the auxiliary mounting member 10 and exert a magnetic force sufficient to support the temporarily dropped electronic device main body 3. When the electronic device main body 3 that has temporarily fallen off is supported, the magnetic force of the first magnets 5a and 5b also acts on the electronic device main body 3, so that the second magnets 16a and 16b are the electronic device main body 3 You don't have to support all of your weight. Therefore, the magnetic forces of the second magnets 16a and 16b may be selected within an appropriate range so that they can be easily removed, and it is not necessary to select magnets that exert an unnecessarily large magnetic force.

ここで、第１の磁石５ａ、５ｂと、第２の磁石１６ａ、１６ｂの磁力の関係について説明する。まず、補助取付部材１０の質量をｍ[ｋｇ]、電子機器本体３の質量を補助取付部材１０の質量のＡ倍、すなわち、Ａｍ[ｋｇ]とする。ここで、Ａ＞１である。衝撃における加速度をａ[ｍ／ｓ^２]とすると、運動方程式（Ｆ＝ｍ・ａ）により、電子機器本体３に加わる衝撃力は、Ａｍ・ａ[Ｎ]であり、補助取付部材１０に加わる衝撃力は、ｍ・ａ[Ｎ]となる。 Here, the relationship between the magnetic forces of the first magnets 5a and 5b and the second magnets 16a and 16b will be described. First, the mass of the auxiliary mounting member 10 is m [kg], and the mass of the electronic device main body 3 is A times the mass of the auxiliary mounting member 10, that is, Am [kg]. Here, A> 1. Assuming that the acceleration in impact is a [m / s ² ], the impact force applied to the electronic device main body 3 is Am · a [N] according to the equation of motion (F = m · a), and is applied to the auxiliary mounting member 10. The impact force is m · a [N].

このとき、第１の磁石５ａ、５ｂを合わせた磁力をｔ[Ｎ]、第２の磁石１６ａ、１６ｂを合わせた磁力を、第１の磁石５ａ、５ｂの磁力のＢ倍、すなわち、Ｂｔ[Ｎ]とする。ここで、Ｂ＞０である。従って、第２の磁石１６ａ、１６ｂは、第１の磁石５ａ、５ｂに対して、ＡＢ倍の耐衝撃性能を発揮することができる。 At this time, the combined magnetic force of the first magnets 5a and 5b is t [N], and the combined magnetic force of the second magnets 16a and 16b is B times the magnetic force of the first magnets 5a and 5b, that is, Bt [ N]. Here, B> 0. Therefore, the second magnets 16a and 16b can exhibit AB times the impact resistance performance of the first magnets 5a and 5b.

例えば、電子機器本体３の質量が補助取付部材１０の質量の１０倍、すなわち、Ａ＝１０であるとする。また、第１の磁石５ａ、５ｂの磁力と第２の磁石１６ａ、１６ｂの磁力が同じ、すなわち、Ｂ＝１であるとする。この場合、第２の磁石１６ａ、１６ｂは、第１の磁石５ａ、５ｂに対して、１０倍の耐衝撃性能を発揮することができる。 For example, assume that the mass of the electronic device main body 3 is 10 times the mass of the auxiliary mounting member 10, that is, A = 10. Further, it is assumed that the magnetic force of the first magnets 5a and 5b and the magnetic force of the second magnets 16a and 16b are the same, that is, B = 1. In this case, the second magnets 16a and 16b can exhibit 10 times more impact resistance than the first magnets 5a and 5b.

補助取付部材１０は、電子機器本体３が衝撃によって一時的に脱落した場合であっても、マンホール蓋５０に固定された状態となっていなければならない。このため、第１の磁石５ａ、５ｂと、第２の磁石１６ａ、１６ｂが同一面に吸着していると仮定した場合に、第２の磁石１６ａ、１６ｂの磁力は、下記（式１）を満たすことが求められる。
（式１）
（第２の磁石の磁力）＞
（第１の磁石の磁力）×（補助取付部材の質量）／（電子機器本体の質量） The auxiliary mounting member 10 must be fixed to the manhole cover 50 even when the electronic device main body 3 is temporarily dropped due to an impact. Therefore, assuming that the first magnets 5a and 5b and the second magnets 16a and 16b are attracted to the same surface, the magnetic force of the second magnets 16a and 16b is as follows (Equation 1). It is required to meet.
(Equation 1)
(Magnetic force of the second magnet)>
(Magnetic force of the first magnet) x (Mass of auxiliary mounting member) / (Mass of electronic device body)

実際に第１の磁石５ａ、５ｂの磁力に対し、第２の磁石１６ａ、１６ｂの磁力をどの程度に設定するかは、安全率を考慮して決定することができる。上述の例では、Ｂ＝１とすることで、第２の磁石１６ａ、１６ｂは、第１の磁石５ａ、５ｂに対して、１０倍の耐衝撃性能を得ている。これに対し、例えば、２倍の耐衝撃性能を確保できればよい場合は、Ｂ＝０．２とし、第２の磁石１６ａ、１６ｂの磁力を第１の磁石５ａ、５ｂの５分の１とすればよい。 How much the magnetic force of the second magnets 16a and 16b is actually set with respect to the magnetic force of the first magnets 5a and 5b can be determined in consideration of the safety factor. In the above example, by setting B = 1, the second magnets 16a and 16b have 10 times the impact resistance performance as compared with the first magnets 5a and 5b. On the other hand, for example, when it is sufficient to secure twice the impact resistance performance, set B = 0.2 and set the magnetic force of the second magnets 16a and 16b to one fifth of that of the first magnets 5a and 5b. Just do it.

これに対し、Ｂ＝０．１であると、第２の磁石１６ａ、１６ｂは、第１の磁石５ａ、５ｂと同等の耐衝撃性能となるため、採用することができない。第２の磁石１６ａ、１６ｂが、第１の磁石５ａ、５ｂと同等の耐衝撃性能となると、電子機器本体３が脱落する条件で、補助取付部材１０も脱落してしまうからである。従って、上述の例では、第２の磁石１６ａ、１６ｂは、少なくとも、Ｂ＞０．１の関係を満たすことが求められる。 On the other hand, when B = 0.1, the second magnets 16a and 16b cannot be adopted because they have the same impact resistance as the first magnets 5a and 5b. This is because if the second magnets 16a and 16b have the same impact resistance as the first magnets 5a and 5b, the auxiliary mounting member 10 will also fall off under the condition that the electronic device main body 3 falls off. Therefore, in the above example, the second magnets 16a and 16b are required to satisfy at least the relationship of B> 0.1.

なお、第１の磁石５ａ、５ｂや、第２の磁石１６ａ、１６ｂの磁力の絶対値を決定する際は、電子機器本体３の質量、補助取付部材１０の質量、天井面５０ａ１やリブ頂面５０ｂ２等のマンホール蓋５０の吸着面の表面粗さ等を考慮する。また、第１の磁石５ａ、５ｂの吸着面５ａ１、５ｂ１の面積や、第２の磁石１６ａ、１６ｂの吸着面１６ａ１、１６ｂ１の面積も考慮される。第１の磁石５ａ、５ｂは、二つの磁石の合計の磁力が第１の磁石の磁力とされる。第２の磁石１６ａ、１６ｂは、二つの磁石の合計の磁力が第２の磁石の磁力とされる。 When determining the absolute value of the magnetic force of the first magnets 5a and 5b and the second magnets 16a and 16b, the mass of the electronic device main body 3, the mass of the auxiliary mounting member 10, the ceiling surface 50a1 and the rib top surface. Consider the surface roughness of the suction surface of the manhole cover 50 such as 50b2. Further, the areas of the suction surfaces 5a1 and 5b1 of the first magnets 5a and 5b and the areas of the suction surfaces 16a1 and 16b1 of the second magnets 16a and 16b are also taken into consideration. In the first magnets 5a and 5b, the total magnetic force of the two magnets is the magnetic force of the first magnet. In the second magnets 16a and 16b, the total magnetic force of the two magnets is the magnetic force of the second magnet.

図１１（Ａ）、図１１（Ｂ）を参照すると、電子機器２は、第１の磁石５ａ、５ｂ、第２の磁石１６ａ、１６ｂによってマンホール蓋５０に吸着し、固定される。第１の磁石５ａ、５ｂは、磁力Ｆ１によって天井面５０ａ１に吸着し、電子機器本体３を固定する。第２の磁石１６ａ、１６ｂは、磁力Ｆ２によってリブ頂面５０ｂ２に吸着し、補助取付部材１０を固定する。図１１（Ｂ）に示すように、マンホール蓋５０への電子機器２の固定が完了した状態では、第１ピン８ａ、９ａは、係合孔１２ａ、１４ａの内周に接触しない状態となっている。なお、図１１（Ａ）、図１１（Ｂ）には、第１の磁石５ｂは、表れていない。 With reference to FIGS. 11A and 11B, the electronic device 2 is attracted to and fixed to the manhole cover 50 by the first magnets 5a and 5b and the second magnets 16a and 16b. The first magnets 5a and 5b are attracted to the ceiling surface 50a1 by the magnetic force F1 to fix the electronic device main body 3. The second magnets 16a and 16b are attracted to the rib top surface 50b2 by the magnetic force F2 to fix the auxiliary mounting member 10. As shown in FIG. 11B, when the electronic device 2 is fixed to the manhole cover 50, the first pins 8a and 9a do not come into contact with the inner circumferences of the engaging holes 12a and 14a. There is. The first magnet 5b does not appear in FIGS. 11 (A) and 11 (B).

このような状態から、図１２に示すようにマンホール蓋５０に衝撃による力Ｆｉが加わると、電子機器本体３は、マンホール蓋５０から離間する。このとき、補助取付部材１０は、マンホール蓋５０への固定状態が維持されており、電子機器本体３を支持する。補助取付部材１０によって支持された電子機器本体３には、第１の磁石５ａ、５ｂの磁力が作用しているため、電子機器本体３は、即座に固定状態に復帰することができる。 From such a state, when a force Fi due to an impact is applied to the manhole cover 50 as shown in FIG. 12, the electronic device main body 3 is separated from the manhole cover 50. At this time, the auxiliary mounting member 10 is maintained in a fixed state to the manhole cover 50 and supports the electronic device main body 3. Since the magnetic force of the first magnets 5a and 5b acts on the electronic device main body 3 supported by the auxiliary mounting member 10, the electronic device main body 3 can be immediately returned to the fixed state.

本実施形態の電子機器システム１では、第１の磁石５ａ、５ｂは、マンホール蓋５０の天井面５０ａ１に吸着している。一方、第２の磁石１６ａ、１６ｂは、リブ頂面５０ｂ２に吸着している。図１３を参照すると、リブ頂面５０ｂ２は、天井面５０ａ１に対して傾斜している。このため、第２の磁石１６ａ、１６ｂの磁力線Ｍ２の向きは、第１の磁石５ａ、５ｂの磁力線Ｍ１の向きと異なっている。 In the electronic device system 1 of the present embodiment, the first magnets 5a and 5b are attracted to the ceiling surface 50a1 of the manhole cover 50. On the other hand, the second magnets 16a and 16b are attracted to the rib top surface 50b2. Referring to FIG. 13, the rib top surface 50b2 is inclined with respect to the ceiling surface 50a1. Therefore, the directions of the magnetic force lines M2 of the second magnets 16a and 16b are different from the directions of the magnetic force lines M1 of the first magnets 5a and 5b.

このように、第１の磁石５ａ、５ｂの磁力線Ｍ１の向きと、第２の磁石１６ａ、１６ｂの磁力線Ｍ２の向きを異ならせることで、電子機器２として、一方向からの衝撃に対する耐衝撃性を高めることができる。例えば、天面５０ａ２上を車両が通過した場合、その衝撃による力の向きは、概ね天井面５０ａ１に直交する方向であると考えられる。このため、天井面５０ａ１に対し角度を有するリブ頂面５０ｂ２では、衝撃による力は、緩和されると考えられ、補助取付部材１０に加わる力も小さくなると考えられる。補助取付部材１０に加わる力が小さくなれば、補助取付部材１０はより脱落し難くなる。すなわち、電子機器本体３が一時的に脱落しても、補助取付部材１０は、固定状態を維持し、電子機器本体３を支持することができる。 By making the directions of the magnetic force lines M1 of the first magnets 5a and 5b different from the directions of the magnetic force lines M2 of the second magnets 16a and 16b in this way, the electronic device 2 has impact resistance against an impact from one direction. Can be enhanced. For example, when a vehicle passes over the top surface 50a2, the direction of the force due to the impact is considered to be a direction substantially orthogonal to the ceiling surface 50a1. Therefore, at the rib top surface 50b2 having an angle with respect to the ceiling surface 50a1, the force due to the impact is considered to be relaxed, and the force applied to the auxiliary mounting member 10 is also considered to be small. The smaller the force applied to the auxiliary mounting member 10, the more difficult it is for the auxiliary mounting member 10 to fall off. That is, even if the electronic device main body 3 temporarily falls off, the auxiliary mounting member 10 can maintain the fixed state and support the electronic device main body 3.

つぎに、図１４を参照しつつ、電子機器２をマンホール蓋５０から取り外す様子について、説明する。本実施形態の電子機器２は、電子機器本体３の一時的な脱落を許容するように各磁石の磁力を設定している。しかしながら、マンホール蓋５０から電子機器２を取り外すためには、依然として労力を伴う。 Next, a state of removing the electronic device 2 from the manhole cover 50 will be described with reference to FIG. In the electronic device 2 of the present embodiment, the magnetic force of each magnet is set so as to allow the electronic device main body 3 to temporarily fall off. However, it is still laborious to remove the electronic device 2 from the manhole cover 50.

そこで、本実施形態の電子機器２は、てこの原理を利用することができる第１腕部１１と第２腕部１３を備えている。具体的に、電子機器２は、筐体４にそれぞれ第１腕部１１と第２腕部１３の軸部材となる第１ピン８ａ、９ａを備える。そして、それぞれ第１ピン８ａ、９ａから離れた位置に突設された第２ピン８ｂ、９ｂを備える。第１ピン８ａ、第２ピン８ｂは、側壁部４ａに設けられている。第１ピン９ａ、第２ピン９ｂは、側壁部４ｂに設けられている。 Therefore, the electronic device 2 of the present embodiment includes a first arm portion 11 and a second arm portion 13 capable of utilizing the principle of leverage. Specifically, the electronic device 2 includes first pins 8a and 9a, which are shaft members of the first arm portion 11 and the second arm portion 13, respectively, in the housing 4. Then, the second pins 8b and 9b are provided so as to project from the first pins 8a and 9a, respectively. The first pin 8a and the second pin 8b are provided on the side wall portion 4a. The first pin 9a and the second pin 9b are provided on the side wall portion 4b.

補助取付部材１０の板状部１２には、第２ピン８ｂが係合し、第１腕部１１の揺動に伴って、第２ピン８ｂが相対移動する第２ピン８ｂのガイド溝１２ｂが設けられている。補助取付部材１０の板状部１４には、第２ピン９ｂが係合し、第２腕部１３の揺動に伴って、第２ピン９ｂが相対移動する第２ピン９ｂのガイド溝１２ｂが設けられている。ガイド溝１２ｂとガイド溝１４ｂは、第２ピン８ｂと第２ピン９ｂのガイドをするだけでなく、第２ピン８ｂ、第２ピン９ｂを介して第１腕部１１と第２腕部１３に加えられた力を筐体４に伝達する。 The guide groove 12b of the second pin 8b is engaged with the plate-shaped portion 12 of the auxiliary mounting member 10 and the second pin 8b moves relative to the plate-shaped portion 12 of the auxiliary mounting member 10 as the first arm portion 11 swings. It is provided. The guide groove 12b of the second pin 9b is engaged with the plate-shaped portion 14 of the auxiliary mounting member 10 and the second pin 9b moves relative to the plate-shaped portion 14 of the auxiliary mounting member 10 as the second arm portion 13 swings. It is provided. The guide groove 12b and the guide groove 14b not only guide the second pin 8b and the second pin 9b, but also reach the first arm portion 11 and the second arm portion 13 via the second pin 8b and the second pin 9b. The applied force is transmitted to the housing 4.

第１腕部１１は側壁部４ａ側に配置される。第２腕部１３は側壁部４ｂ側に配置される。このような第１腕部１１と第２腕部１３は取手部１５を介して連設されている。このため、取手部１５を操作することで、第１腕部１１と第２腕部１３は、同時に作動する。腕部を両側に配置することで、電子機器本体３の全域に均等に力を伝達することができ、電子機器本体３を取り外し易くすることができる。また、取手部１５を設けることで、操作性が向上するだけでなく、第１腕部１１と第２腕部１３を均等に動かすことができ、電子機器本体３を取り外し易くなる。 The first arm portion 11 is arranged on the side wall portion 4a side. The second arm portion 13 is arranged on the side wall portion 4b side. Such a first arm portion 11 and a second arm portion 13 are connected to each other via a handle portion 15. Therefore, by operating the handle portion 15, the first arm portion 11 and the second arm portion 13 operate at the same time. By arranging the arms on both sides, the force can be evenly transmitted over the entire area of the electronic device main body 3, and the electronic device main body 3 can be easily removed. Further, by providing the handle portion 15, not only the operability is improved, but also the first arm portion 11 and the second arm portion 13 can be moved evenly, and the electronic device main body 3 can be easily removed.

なお、図１４（Ａ）及び図１４（Ｂ）には、側壁部４ａ側から観た様子が描かれているが、側壁部４ｂ側においても同様である。以下の説明では、図１４（Ａ）及び図１４（Ｂ）に表れている側壁部４ａ側の動きについて説明する。 Although FIGS. 14 (A) and 14 (B) show the view from the side wall portion 4a side, the same applies to the side wall portion 4b side. In the following description, the movement on the side wall portion 4a side shown in FIGS. 14 (A) and 14 (B) will be described.

図１４（Ａ）に示すように、マンホール蓋５０に電子機器２が固定された状態から、電子機器２を取り外すときは、作業者は、取手部１５を摘まみ、図１４（Ａ）中、下方に第１腕部１１を引き下ろす。このとき、第２ピン８ｂは、係合孔１２ａの下端側に位置している。第１腕部１１が引き下ろされると、第２の磁石１６ａが取手部１５に近い側から順にリブ頂面５０ｂ２から引き剥がされる。取手部１５は、第１腕部１１の端部に位置しており、第２の磁石１６ａから離れた位置に設けられているため、てこの原理により、小さな力でも、容易に第２の磁石１６ａを引き剥がすことができる。第２ピン８ｂは、第１腕部１１が引き下ろされる動作に伴って、ガイド溝１２ｂ内を相対的に上側に向かって移動する。 As shown in FIG. 14 (A), when the electronic device 2 is removed from the state where the electronic device 2 is fixed to the manhole cover 50, the operator picks up the handle portion 15 and in FIG. 14 (A), Pull down the first arm portion 11. At this time, the second pin 8b is located on the lower end side of the engaging hole 12a. When the first arm portion 11 is pulled down, the second magnet 16a is peeled off from the rib top surface 50b2 in order from the side closer to the handle portion 15. Since the handle portion 15 is located at the end of the first arm portion 11 and is provided at a position away from the second magnet 16a, the second magnet can be easily operated even with a small force by the principle of leverage. 16a can be peeled off. The second pin 8b moves relatively upward in the guide groove 12b as the first arm portion 11 is pulled down.

そして、第２ピン８ｂが、ガイド溝１２ｂの上端に到達すると、第１腕部１１を引き下ろす力が、筐体４（電子機器本体３）に伝達されるようになる。すなわち、ガイド溝１２ｂは、第１腕部１１に加えられた力を筐体４に伝達するための部分として機能する。なお、第２の磁石１６ａがその全域において引き剥がされる段階になると、第１ピン８ａも係合孔１２ａの内周と接触するようになり、係合孔１２ａ、第１ピン８ａを介して第１腕部１１に加えられた力が筐体４に伝達されるようになる。 Then, when the second pin 8b reaches the upper end of the guide groove 12b, the force for pulling down the first arm portion 11 is transmitted to the housing 4 (electronic device main body 3). That is, the guide groove 12b functions as a portion for transmitting the force applied to the first arm portion 11 to the housing 4. When the second magnet 16a is peeled off in the entire area, the first pin 8a also comes into contact with the inner circumference of the engaging hole 12a, and the first pin 8a is passed through the engaging hole 12a and the first pin 8a. 1 The force applied to the arm portion 11 is transmitted to the housing 4.

その後、さらに、第１腕部１１を引き下げると、第１の磁石５ａ、５ｂが天井面５０ａ１から引き剥がされ、電子機器２を取り外すことができる。 After that, when the first arm portion 11 is further pulled down, the first magnets 5a and 5b are peeled off from the ceiling surface 50a1 and the electronic device 2 can be removed.

第１腕部１１と第２腕部１３は、傾斜しているリブ頂面５０ｂ２に沿って配置されている。このため、電子機器２を取り外すときは、第１腕部１１と第２腕部１３を傾斜しているリブ頂面５０ｂ２に沿って動かす。この結果、作業者は、力を入れ易く、容易に第１腕部１１と第２腕部１３を操作することができ、第２の磁石１６ａ、１６ｂを引き剥がすことができる。また、本実施形態では、まず、第２の磁石１６ａ、１６ｂを引き剥がし、その後、第１の磁石５ａ、５ｂを引き剥がす。すなわち、第１の磁石５ａ、５ｂと第２の磁石１６ａ、１６ｂを同時に引き剥がさなくてもよいため、小さな力で電子機器２を取り外すことができる。 The first arm portion 11 and the second arm portion 13 are arranged along the inclined rib top surface 50b2. Therefore, when the electronic device 2 is removed, the first arm portion 11 and the second arm portion 13 are moved along the inclined rib top surface 50b2. As a result, the operator can easily apply force, can easily operate the first arm portion 11 and the second arm portion 13, and can peel off the second magnets 16a and 16b. Further, in the present embodiment, first, the second magnets 16a and 16b are peeled off, and then the first magnets 5a and 5b are peeled off. That is, since the first magnets 5a and 5b and the second magnets 16a and 16b do not have to be peeled off at the same time, the electronic device 2 can be removed with a small force.

以上、説明したように、本実施形態の電子機器システム１では、補助取付部材１０を設けることで電子機器本体３の一時的なマンホール蓋５０からの脱落を許容するので、マンホール蓋５０からの取り外しが容易に行える磁力を選定できる。また、一時的に脱落した電子機器本体３は、補助取付部材１０によって支持され、即座にマンホール蓋５０への固定状態に復帰することができ、完全な脱落が抑制される。また、本実施形態の電子機器システム１では、第１腕部１１、第２腕部１３を備え、さらに、第２ピン８ｂ、９ｂを備えることで、電子機器２を容易にマンホール蓋５０から取り外すことができる。 As described above, in the electronic device system 1 of the present embodiment, since the auxiliary mounting member 10 is provided to allow the electronic device main body 3 to temporarily fall off from the manhole cover 50, it can be removed from the manhole cover 50. You can select the magnetic force that can be easily performed. Further, the temporarily dropped electronic device main body 3 is supported by the auxiliary mounting member 10 and can be immediately returned to the fixed state to the manhole cover 50, so that the electronic device main body 3 is completely prevented from falling off. Further, in the electronic device system 1 of the present embodiment, the electronic device 2 is easily removed from the manhole cover 50 by providing the first arm portion 11 and the second arm portion 13 and further providing the second pins 8b and 9b. be able to.

本実施形態の電子機器システム１であれば、汎用性のあるマンホール蓋５０を用いることができる。すなわち、電子機器２を設置するための、マンホール蓋５０のカスタマイズが不要である。マンホール蓋５０をカスタマイズしようとすると、新たに強度設計をし直さなければならない等、設置コストが嵩む。本実施形態の電子機器システム１によれば、これらの問題を解決することができ、接地自由度が高まる。 In the case of the electronic device system 1 of the present embodiment, a versatile manhole cover 50 can be used. That is, it is not necessary to customize the manhole cover 50 for installing the electronic device 2. If the manhole cover 50 is to be customized, the installation cost will increase, for example, the strength design must be redesigned. According to the electronic device system 1 of the present embodiment, these problems can be solved and the degree of freedom of grounding is increased.

（変形例）
ここで、図１５（Ａ）、図１５（Ｂ）、図１６（Ａ）〜図１６（Ｄ）を参照しつつ、変形例について説明する。図１５（Ａ）は他の電子機器がマンホール蓋に装着される様子を、図３のＡ−Ａ線に相当する線で断面として示す説明図であり、図１５（Ｂ）はマンホール蓋が衝撃を受けたときの他の電子機器の様子を、図３のＡ−Ａ線に相当する線で断面として示す説明図である。図１６（Ａ）〜図１６（Ｄ）は第１の磁石と第２の磁石の配置の組み合わせの例を示す説明図である。 (Modification example)
Here, a modified example will be described with reference to FIGS. 15 (A), 15 (B), and 16 (A) to 16 (D). FIG. 15 (A) is an explanatory view showing how another electronic device is attached to the manhole cover as a cross section with a line corresponding to the line AA of FIG. 3, and FIG. 15 (B) shows the impact of the manhole cover. It is explanatory drawing which shows the state of another electronic device at the time of receiving, as a cross section by the line corresponding to line AA of FIG. 16 (A) to 16 (D) are explanatory views showing an example of a combination of arrangements of the first magnet and the second magnet.

図１５（Ａ）、図１５（Ｂ）に示す例は、第１の磁石１０５ａを電子機器本体３の筐体４に取り付ける際に、ネジを用いない例である。この例において、第１の磁石１０５ａは、自身の磁力によって、電子機器本体３に固定されている。なお、この場合、電子機器本体３の筐体４は、磁性体を含んでおり、第１の磁石１０５ａを吸着できるようになっている。図面には、表れていないが、図１５（Ａ）において、奥側に配置された第１の磁石についても、同様に、磁力によって、電子機器本体３に固定されている。また、本実施形態では、第２の磁石１１６ａ、１１６ｂも第１腕部１１、第２腕部１３に自身の磁力によって固定されている。 The examples shown in FIGS. 15A and 15B are examples in which screws are not used when the first magnet 105a is attached to the housing 4 of the electronic device main body 3. In this example, the first magnet 105a is fixed to the electronic device main body 3 by its own magnetic force. In this case, the housing 4 of the electronic device main body 3 contains a magnetic material so that the first magnet 105a can be attracted to the housing 4. Although not shown in the drawing, in FIG. 15A, the first magnet arranged on the back side is also fixed to the electronic device main body 3 by a magnetic force. Further, in the present embodiment, the second magnets 116a and 116b are also fixed to the first arm portion 11 and the second arm portion 13 by their own magnetic force.

図１５（Ｂ）を参照すると、マンホール蓋５０が衝撃を受けたとき、第１の磁石１０５ａは、天井面５０ａ１に固定され、電子機器本体３のみが、第１の磁石１０５ａから切り離されて、脱落した状態となる。このような形態で脱落した電子機器本体３も、補助取付部材１０によって支持される。このため、電子機器本体３は、第１の磁石１０５ａの磁力によって、図１５（Ａ）に示すような固定状態へ復帰することができる。 Referring to FIG. 15B, when the manhole cover 50 receives an impact, the first magnet 105a is fixed to the ceiling surface 50a1, and only the electronic device main body 3 is separated from the first magnet 105a. It will be in a dropped state. The electronic device main body 3 that has fallen off in such a form is also supported by the auxiliary mounting member 10. Therefore, the electronic device main body 3 can be returned to the fixed state as shown in FIG. 15A by the magnetic force of the first magnet 105a.

次に、図１６（Ａ）〜図１６（Ｄ）を参照して、第１の磁石５ａ、５ｂと、第２の磁石１６ａ、１６ｂの配置の組み合わせについて、説明する。図１６（Ａ）は、上述の実施形態と同様の配置であり、第１の磁石５ａ、５ｂが天井面５０ａ１に固定され、第２の磁石１６ａ、１６ｂがリブ頂面５０ｂ２に固定された例を示している。図１６（Ｂ）は、第１の磁石５ａ、５ｂが天井面５０ａ１に固定され、第２の磁石１６ａ、１６ｂがリブ５０ｂの内側面５０ｂ１に固定された例を示している。図１６（Ｃ）は、第１の磁石５ａ、５ｂがリブ５０ｂの内側面５０ｂ１に固定され、第２の磁石１６ａ、１６ｂがリブ頂面５０ｂ２に固定された例を示している。図１６（Ｄ）は、第１の磁石５ａ、５ｂ及び第２の磁石１６ａ、１６ｂがともに、天井面５０ａ１に固定された例を示している。このように、第１の磁石５ａ、５ｂ及び第２の磁石１６ａ、１６ｂの配置は、種々変更することができる。図１６（Ａ）〜図１６（Ｃ）に示す例では、第１の磁石５ａ、５ｂと第２の磁石１６ａ、１６ｂが異なる面に吸着するので、磁力線の方向が異なり、一方向の衝撃に強い配置となる。第２の磁石１６ａ、１６ｂは、リブ５０ｂに含まれる各面に適宜磁気結合され、固定することができる。 Next, the combination of the arrangement of the first magnets 5a and 5b and the second magnets 16a and 16b will be described with reference to FIGS. 16A to 16D. FIG. 16A shows an example in which the first magnets 5a and 5b are fixed to the ceiling surface 50a1 and the second magnets 16a and 16b are fixed to the rib top surface 50b2 in the same arrangement as in the above-described embodiment. Is shown. FIG. 16B shows an example in which the first magnets 5a and 5b are fixed to the ceiling surface 50a1 and the second magnets 16a and 16b are fixed to the inner side surface 50b1 of the rib 50b. FIG. 16C shows an example in which the first magnets 5a and 5b are fixed to the inner side surface 50b1 of the rib 50b, and the second magnets 16a and 16b are fixed to the rib top surface 50b2. FIG. 16D shows an example in which the first magnets 5a and 5b and the second magnets 16a and 16b are both fixed to the ceiling surface 50a1. As described above, the arrangement of the first magnets 5a and 5b and the second magnets 16a and 16b can be variously changed. In the examples shown in FIGS. 16A to 16C, the first magnets 5a and 5b and the second magnets 16a and 16b are attracted to different surfaces, so that the directions of the magnetic force lines are different and the impact is in one direction. It will be a strong arrangement. The second magnets 16a and 16b can be appropriately magnetically coupled to and fixed to each surface included in the rib 50b.

以上本発明の好ましい実施形態について詳述したが、本発明は係る特定の実施形態に限定されるものではなく、特許請求の範囲に記載された本発明の要旨の範囲内において、種々の変形、変更が可能である。 Although the preferred embodiments of the present invention have been described in detail above, the present invention is not limited to the specific embodiments, and various modifications and variations are made within the scope of the gist of the present invention described in the claims. It can be changed.

なお、以上の説明に関して更に以下の付記を開示する。
（付記１）
磁性体を含む支持体と、
前記支持体と磁気結合された第１の磁石と、
前記第１の磁石を介して前記支持体に着脱可能な状態で固定された筐体を有する電子機器本体と、
前記支持体と磁気結合された第２の磁石と、
前記第２の磁石を介して前記支持体に固定された補助取付部材と、を備え、
前記補助取付部材は、前記筐体が備える被係合部に遊嵌され、前記筐体が前記支持体に固定された状態である場合に、前記被係合部との係合が解除され、前記筐体が前記支持体から離間した場合に、前記被係合部と係合し、前記筐体を、前記第１の磁石の磁力によって、前記支持体への固定状態に復帰可能な位置で支持する係合部を有する電子機器システム。
（付記２）
前記被係合部は、前記筐体の側方に突設された第１ピンであり、前記係合部は、前記第１ピンの軸径よりも大きい直径を有し、前記第１ピンが挿し込まれた係合孔を備えた付記１に記載の電子機器システム。
（付記３）
前記補助取付部材は、前記係合部に連設されるとともに、前記第１ピンを軸部材として揺動可能に設けられた腕部を備え、前記第２の磁石は、前記腕部に沿って配置された付記２に記載の電子機器システム。
（付記４）
前記筐体は、前記腕部の軸部材となる前記第１ピンから離れた位置に突設された第２ピンを備え、
前記補助取付部材は、前記第２ピンが係合し、前記腕部の揺動に伴って、前記第２ピンが相対移動する前記第２ピンのガイド溝を備えた付記３に記載の電子機器システム。
（付記５）
前記腕部は、前記筐体の両側にそれぞれ設けられた付記３又は４に記載の電子機器システム。
（付記６）
それぞれの前記腕部は、取手部を介して連設された付記５に記載の電子機器システム。
（付記７）
前記第２の磁石が生じる磁力線の向きと、前記第１の磁石が生じる磁力線の向きが異なる付記１乃至６のいずれか１項に記載の電子機器システム。
（付記８）
前記支持体は、天井面と、当該天井面に設けられたリブを備え、
前記第１の磁石は、前記天井面に磁気結合し、前記第２の磁石は、前記天井面又は前記リブが備える面のいずれかに磁気結合する付記１又は２に記載の電子機器システム。
（付記９）
前記第２の磁石の磁力は、
（第２の磁石の磁力）＞（第１の磁石の磁力）×（補助取付部材の質量）／（電子機器本体の質量）
の関係を満たす付記１乃至７のいずれか１項に記載の電子機器システム。
（付記１０）
磁性体を含む支持体と磁気結合される第１の磁石と、
前記第１の磁石を介して前記支持体に着脱可能な状態で固定される筐体と、
前記支持体と磁気結合される第２の磁石と、
前記第２の磁石を介して前記支持体に固定される補助取付部材と、を備え、
前記補助取付部材は、前記筐体が備える被係合部に遊嵌され、前記筐体が前記支持体に固定された状態である場合に、前記被係合部との係合が解除され、前記筐体が前記支持体から離間した場合に、前記被係合部と係合し、前記筐体を、前記第１の磁石の磁力によって、前記支持体への固定状態に復帰可能な位置で支持する係合部を有する電子機器。
（付記１１）
前記被係合部は、前記筐体の側方に突設された第１ピンであり、前記係合部は、前記第１ピンの軸径よりも大きい直径を有し、前記第１ピンが挿し込まれた係合孔を備えた付記１０に記載の電子機器。
（付記１２）
前記補助取付部材は、前記係合部に連設されるとともに、前記第１ピンを軸部材として揺動可能に設けられた腕部を備え、前記第２の磁石は、前記腕部に沿って配置された付記１１に記載の電子機器。
（付記１３）
前記筐体は、前記腕部の軸部材となる前記第１ピンから離れた位置に突設された第２ピンを備え、
前記補助取付部材は、前記第２ピンが係合し、前記腕部の揺動に伴って、前記第２ピンが相対移動する前記第２ピンのガイド溝を備えた付記１２に記載の電子機器。
（付記１４）
前記腕部は、前記筐体の両側にそれぞれ設けられた付記１２又は１３に記載の電子機器。
（付記１５）
それぞれの前記腕部は、取手部を介して連設された付記１４に記載の電子機器。
（付記１６）
前記第２の磁石が生じる磁力線の向きと、前記第１の磁石が生じる磁力線の向きが異なる付記１０乃至１５のいずれか１項に記載の電子機器。
（付記１７）
前記支持体は、天井面と、当該天井面に設けられたリブを備え、
前記第１の磁石は、前記天井面に磁気結合し、前記第２の磁石は、前記天井面又は前記リブが備える面のいずれかに磁気結合する付記１０又は１１に記載の電子機器。
（付記１８）
前記第２の磁石の磁力は、
（第２の磁石の磁力）＞（第１の磁石の磁力）×（補助取付部材の質量）／（電子機器本体の質量）
の関係を満たす付記１０乃至１７のいずれか１項に記載の電子機器。
（付記１９）
金属体に磁気結合された第１の磁石と、
前記第１の磁石と磁気結合され、前記第１の磁石を介して前記金属体に固定される筐体を備える電子機器本体と、
前記金属体の複数のリブに磁気結合された複数の磁石と、
前記複数の磁石に磁気結合された金属製部材と、を備え、
前記金属製部材は、前記第１の磁石が前記金属体から離間した場合に、前記第１の磁石の磁力によって前記電子機器本体ごと前記金属体に結合可能な距離以下で前記電子機器本体に摺動可能に係合された、
ことを特徴とする電子機器。 The following additional notes will be further disclosed with respect to the above description.
(Appendix 1)
Supports containing magnetic materials and
A first magnet magnetically coupled to the support,
An electronic device main body having a housing fixed to the support in a detachable state via the first magnet, and an electronic device main body.
A second magnet magnetically coupled to the support,
An auxiliary mounting member fixed to the support via the second magnet is provided.
The auxiliary mounting member is loosely fitted into the engaged portion included in the housing, and when the housing is fixed to the support, the engagement with the engaged portion is released. When the housing is separated from the support, it engages with the engaged portion, and the housing can be returned to the fixed state to the support by the magnetic force of the first magnet. An electronic device system with a supporting engagement.
(Appendix 2)
The engaged portion is a first pin projecting to the side of the housing, the engaging portion has a diameter larger than the shaft diameter of the first pin, and the first pin has a diameter larger than the shaft diameter of the first pin. The electronic device system according to Appendix 1, which includes an inserted engaging hole.
(Appendix 3)
The auxiliary mounting member is provided in series with the engaging portion, and also includes an arm portion that is swingably provided with the first pin as a shaft member, and the second magnet is provided along the arm portion. The electronic device system according to Appendix 2 which is arranged.
(Appendix 4)
The housing includes a second pin projecting at a position away from the first pin, which is a shaft member of the arm portion.
The electronic device according to Appendix 3, wherein the auxiliary mounting member includes a guide groove of the second pin in which the second pin is engaged and the second pin moves relative to each other as the arm swings. system.
(Appendix 5)
The electronic device system according to Appendix 3 or 4, wherein the arms are provided on both sides of the housing, respectively.
(Appendix 6)
The electronic device system according to Appendix 5, wherein each of the arms is connected via a handle.
(Appendix 7)
The electronic device system according to any one of Supplementary note 1 to 6, wherein the direction of the magnetic force line generated by the second magnet and the direction of the magnetic force line generated by the first magnet are different.
(Appendix 8)
The support includes a ceiling surface and ribs provided on the ceiling surface.
The electronic device system according to Appendix 1 or 2, wherein the first magnet is magnetically coupled to the ceiling surface, and the second magnet is magnetically coupled to either the ceiling surface or the surface provided by the rib.
(Appendix 9)
The magnetic force of the second magnet is
(Magnetic force of the second magnet)> (Magnetic force of the first magnet) x (Mass of auxiliary mounting member) / (Mass of electronic device body)
The electronic device system according to any one of Supplementary Provisions 1 to 7, which satisfies the above relationship.
(Appendix 10)
A first magnet that is magnetically coupled to a support containing a magnetic material,
A housing that is detachably fixed to the support via the first magnet, and a housing that is detachably fixed to the support.
A second magnet that is magnetically coupled to the support,
An auxiliary mounting member fixed to the support via the second magnet is provided.
The auxiliary mounting member is loosely fitted into the engaged portion included in the housing, and when the housing is fixed to the support, the engagement with the engaged portion is released. When the housing is separated from the support, it engages with the engaged portion, and the housing can be returned to the fixed state to the support by the magnetic force of the first magnet. An electronic device that has an engaging part that supports it.
(Appendix 11)
The engaged portion is a first pin projecting to the side of the housing, the engaging portion has a diameter larger than the shaft diameter of the first pin, and the first pin has a diameter larger than the shaft diameter of the first pin. The electronic device according to Appendix 10 having an inserted engaging hole.
(Appendix 12)
The auxiliary mounting member is connected to the engaging portion and includes an arm portion that is swingably provided with the first pin as a shaft member, and the second magnet is provided along the arm portion. The electronic device according to Appendix 11 which is arranged.
(Appendix 13)
The housing includes a second pin projecting at a position away from the first pin, which is a shaft member of the arm portion.
The electronic device according to Appendix 12, wherein the auxiliary mounting member includes a guide groove of the second pin in which the second pin is engaged and the second pin moves relative to each other as the arm swings. ..
(Appendix 14)
The electronic device according to Appendix 12 or 13, wherein the arm portion is provided on both sides of the housing, respectively.
(Appendix 15)
The electronic device according to Appendix 14, wherein each of the arms is serially connected via a handle.
(Appendix 16)
The electronic device according to any one of Supplementary note 10 to 15, wherein the direction of the magnetic force line generated by the second magnet and the direction of the magnetic force line generated by the first magnet are different.
(Appendix 17)
The support includes a ceiling surface and ribs provided on the ceiling surface.
The electronic device according to Appendix 10 or 11, wherein the first magnet is magnetically coupled to the ceiling surface, and the second magnet is magnetically coupled to either the ceiling surface or the surface provided by the rib.
(Appendix 18)
The magnetic force of the second magnet is
(Magnetic force of the second magnet)> (Magnetic force of the first magnet) x (Mass of auxiliary mounting member) / (Mass of electronic device body)
The electronic device according to any one of Supplementary Provisions 10 to 17, which satisfies the above relationship.
(Appendix 19)
The first magnet magnetically coupled to the metal body,
An electronic device main body including a housing that is magnetically coupled to the first magnet and fixed to the metal body via the first magnet.
A plurality of magnets magnetically coupled to a plurality of ribs of the metal body,
A metal member magnetically coupled to the plurality of magnets is provided.
When the first magnet is separated from the metal body, the metal member slides on the electronic device main body within a distance that can be bonded to the metal body together with the electronic device main body by the magnetic force of the first magnet. Movably engaged,
An electronic device characterized by that.

１電子機器システム
２電子機器
３電子機器本体
４筐体
４ａ、４ｂ側壁部
５ａ、５ｂ第１の磁石
６ネジ
８ａ、９ａ第１ピン（被係合部）
８ｂ、９ｂ第２ピン
１０補助取付部材
１１第１腕部
１２板状部
１２ａ係合部（係合孔）
１２ｂガイド溝
１３第２腕部
１４板状部
１４ａ係合部（係合孔）
１４ｂガイド溝
１５取手部
１６ａ、１６ｂ第２の磁石
１７ネジ
５０マンホール蓋（金属体）
５０ａ本体部
５０ｂリブ
５０ｂ２リブ頂面 1 Electronic equipment system 2 Electronic equipment 3 Electronic equipment main body 4 Housing 4a, 4b Side wall part 5a, 5b First magnet 6 Screw 8a, 9a First pin (engaged part)
8b, 9b 2nd pin 10 Auxiliary mounting member 11 1st arm 12 Plate-shaped 12a Engagement part (engagement hole)
12b Guide groove 13 Second arm part 14 Plate-shaped part 14a Engagement part (engagement hole)
14b Guide groove 15 Handles 16a, 16b Second magnet 17 Screw 50 Manhole cover (metal body)
50a Main body 50b Rib 50b2 Rib top surface

Claims

Supports containing magnetic materials and
A first magnet magnetically coupled to the support,
An electronic device main body having a housing fixed to the support in a detachable state via the first magnet, and an electronic device main body.
A second magnet magnetically coupled to the support,
An auxiliary mounting member fixed to the support via the second magnet is provided.
The auxiliary mounting member is loosely fitted into the engaged portion included in the housing, and when the housing is fixed to the support, the engagement with the engaged portion is released. When the housing is separated from the support, it engages with the engaged portion, and the housing can be returned to the fixed state to the support by the magnetic force of the first magnet. An electronic device system with a supporting engagement.

The engaged portion is a first pin projecting to the side of the housing, the engaging portion has a diameter larger than the shaft diameter of the first pin, and the first pin has a diameter larger than the shaft diameter of the first pin. The electronic device system according to claim 1, further comprising an inserted engaging hole.

The auxiliary mounting member is provided in series with the engaging portion, and also includes an arm portion that is swingably provided with the first pin as a shaft member, and the second magnet is provided along the arm portion. The electronic device system according to claim 2, which is arranged.

The housing includes a second pin projecting at a position away from the first pin, which is a shaft member of the arm portion.
The electronic device according to claim 3, wherein the auxiliary mounting member includes a guide groove of the second pin in which the second pin is engaged and the second pin moves relative to each other as the arm swings. Equipment system.

The electronic device system according to claim 3 or 4, wherein the arms are provided on both sides of the housing, respectively.

The electronic device system according to claim 5, wherein each of the arms is serially connected via a handle.

The electronic device system according to any one of claims 1 to 6, wherein the direction of the magnetic force line generated by the second magnet and the direction of the magnetic force line generated by the first magnet are different.

The support includes a ceiling surface and ribs provided on the ceiling surface.
The electronic device system according to claim 1 or 2, wherein the first magnet is magnetically coupled to the ceiling surface, and the second magnet is magnetically coupled to either the ceiling surface or the surface provided by the rib.

The magnetic force of the second magnet is
(Magnetic force of the second magnet)> (Magnetic force of the first magnet) x (Mass of auxiliary mounting member) / (Mass of electronic device body)
The electronic device system according to any one of claims 1 to 8, which satisfies the relationship of.

A first magnet that is magnetically coupled to a support containing a magnetic material,
A housing that is detachably fixed to the support via the first magnet, and a housing that is detachably fixed to the support.
A second magnet that is magnetically coupled to the support,
An auxiliary mounting member fixed to the support via the second magnet is provided.
The auxiliary mounting member is loosely fitted into the engaged portion included in the housing, and when the housing is fixed to the support, the engagement with the engaged portion is released. When the housing is separated from the support, it engages with the engaged portion, and the housing can be returned to the fixed state to the support by the magnetic force of the first magnet. An electronic device that has an engaging part that supports it.

The first magnet magnetically coupled to the metal body,
An electronic device main body including a housing that is magnetically coupled to the first magnet and fixed to the metal body via the first magnet.
A plurality of magnets magnetically coupled to a plurality of ribs of the metal body,
A metal member magnetically coupled to the plurality of magnets is provided.
When the first magnet is separated from the metal body, the metal member slides on the electronic device main body within a distance that can be bonded to the metal body together with the electronic device main body by the magnetic force of the first magnet. Movably engaged,
An electronic device characterized by that.