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JP6173227B2 - Screw fastening structure and electronic equipment - Google Patents

Screw fastening structure and electronic equipment Download PDF

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Publication number
JP6173227B2
JP6173227B2 JP2014012362A JP2014012362A JP6173227B2 JP 6173227 B2 JP6173227 B2 JP 6173227B2 JP 2014012362 A JP2014012362 A JP 2014012362A JP 2014012362 A JP2014012362 A JP 2014012362A JP 6173227 B2 JP6173227 B2 JP 6173227B2
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screw
fastening structure
electronic device
metal scrap
metal
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JP2015141927A (en
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輝哉 尾高
輝哉 尾高
真志 三崎
真志 三崎
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Description

この発明は、電子機器にタッピングネジを締結する際、電子部品への金属屑の落下を防止するネジ締結構造および電子機器に関するものである。   The present invention relates to a screw fastening structure and an electronic device that prevent metal scraps from dropping onto an electronic component when fastening a tapping screw to the electronic device.

特許文献１では、ネジ穴の裏側に不織布を貼り付け、ネジ穴にネジをねじ込むときに発生する金属屑等を不織布で絡め取ることで、金属屑の付着による電子部品の短絡等の不具合を防止していた。   In Patent Document 1, a non-woven fabric is attached to the back side of a screw hole, and metal scraps generated when screws are screwed into the screw holes are entangled with the non-woven fabric to prevent problems such as short-circuiting of electronic components due to adhesion of metal scraps. Was.

実開平５−３６１１２号公報Japanese Utility Model Publication No. 5-36112

上記特許文献１の構造では、金属屑を絡め取る不織布をネジ穴の裏側に貼り付ける作業が必要となるため、不織布自体のコストと貼り付け作業に掛かるコストが発生するという課題があった。   In the structure of the above-mentioned patent document 1, since it is necessary to affix the non-woven fabric that entangles the metal scraps to the back side of the screw hole, there is a problem that the cost of the non-woven fabric itself and the cost for the affixing operation occur.

この発明は、上記のような課題を解決するためになされたもので、金属屑の落下による短絡不具合を防止可能なネジ締結構造を低コストに実現することを目的とする。   The present invention has been made to solve the above-described problems, and an object of the present invention is to realize a screw fastening structure capable of preventing a short-circuit failure due to falling metal scrap at a low cost.

この発明に係る電子機器のネジ締結構造は、当該電子機器の内部にて前記タッピングネジを締結して取り付けられる部材に、ネジ穴にタッピングネジを締結するときに発生する金属屑の落下経路上に配置されて当該金属屑の落下経路を変更する羽根部が設けられているものである。 In the electronic device screw fastening structure according to the present invention, the metal scrap generated when the tapping screw is fastened to the screw hole is attached to the member attached by fastening the tapping screw inside the electronic device. The blade | wing part which is arrange | positioned and changes the fall path | route of the said metal scrap is provided.

この発明に係る電子機器は、上述のネジ締結構造を備えるものである。   An electronic apparatus according to the present invention includes the above-described screw fastening structure.

この発明によれば、電子機器を構成する既存の部材に、金属屑の落下経路を変更する羽根部を設けるようにしたので、金属屑の落下による短絡不具合を防止可能なネジ締結構造を低コストに実現することができる。   According to the present invention, since the existing member constituting the electronic device is provided with the blade portion that changes the falling path of the metal scrap, the screw fastening structure that can prevent the short circuit failure due to the falling metal scrap is low-cost. Can be realized.

この発明の実施の形態１に係るネジ締結構造を設けた電子機器の構成を示す斜視図である。It is a perspective view which shows the structure of the electronic device which provided the screw fastening structure which concerns on Embodiment 1 of this invention. 実施の形態１に係るネジ締結構造を設けた電子機器の構成を示す平面図である。4 is a plan view showing a configuration of an electronic device provided with a screw fastening structure according to Embodiment 1. FIG. 実施の形態１に係るネジ締結構造を示す、図１の枠線Ａ内の拡大図である。It is an enlarged view in the frame line A of FIG. 1 which shows the screw fastening structure which concerns on Embodiment 1. FIG. 実施の形態１に係るネジ締結構造を設けた電子機器を図２のＢＢ線に沿って切断した断面図である。It is sectional drawing which cut | disconnected the electronic device which provided the screw fastening structure which concerns on Embodiment 1 along the BB line of FIG. 実施の形態１に係るネジ締結構造の変形例を示す図である。It is a figure which shows the modification of the screw fastening structure which concerns on Embodiment 1. FIG.

実施の形態１．
図１は、実施の形態１に係る電子機器１の斜視図、図２は平面図である。図３は、電子機器１のネジ締結構造を示しており、図１の枠線Ａ内の拡大図である。図４は、電子機器１を図２のＢＢ線に沿って切断した断面図である。
電子機器１は、シャーシ２に回路基板３等が取り付けられている。この回路基板３には、コネクタ端子４、コネクタ５を固定するコネクタホルダ６等が実装されている。コネクタホルダ６は板金部品（金属部材）であって、コネクタ端子４の上方に、タッピングネジを締結するネジ穴７が形成されている。 Embodiment 1 FIG.
FIG. 1 is a perspective view of the electronic apparatus 1 according to Embodiment 1, and FIG. 2 is a plan view. FIG. 3 shows a screw fastening structure of the electronic device 1 and is an enlarged view inside the frame A of FIG. 4 is a cross-sectional view of the electronic device 1 taken along line BB in FIG.
In the electronic device 1, a circuit board 3 or the like is attached to a chassis 2. On the circuit board 3, a connector terminal 4 and a connector holder 6 for fixing the connector 5 are mounted. The connector holder 6 is a sheet metal part (metal member), and a screw hole 7 for fastening a tapping screw is formed above the connector terminal 4.

図４に示すように、タッピングネジねじ込み方向Ｃから、不図示のタッピングネジをネジ穴７にねじ込む際、板金部品であるコネクタホルダ６からネジ切りによって金属屑が発生する。その金属屑が金属屑落下経路Ｄへ落下すると、ネジ穴７の真下にあるコネクタ端子４に堆積し、コネクタ端子４の端子電極間で短絡を引き起こす可能性があった。   As shown in FIG. 4, when a tapping screw (not shown) is screwed into the screw hole 7 from the screwing direction C of the tapping screw, metal scraps are generated by threading from the connector holder 6 that is a sheet metal part. When the metal scrap falls into the metal scrap dropping path D, it accumulates on the connector terminal 4 directly below the screw hole 7 and may cause a short circuit between the terminal electrodes of the connector terminal 4.

そこで、実施の形態１では、金属屑による短絡の不具合の可能性を防止するために、金属屑落下経路Ｄ上に羽根部８ａ，８ｂを互いの位置をずらして配置し、ネジ穴７から落下する金属屑の落下経路を金属屑落下経路Ｄから金属屑落下経路Ｅへ変更させる。また、この羽根部８ａ，８ｂには、金属屑の落下経路の変更方向に傾斜した傾斜面８ａ−１，８ｂ−１を形成している。これにより、ネジ穴７から落下した金属屑は、ネジ穴７の真下にある羽根部８ａの傾斜面８ａ−１に落下して羽根部８ｂの方向へ案内され、羽根部８ｂの傾斜面８ｂ−１に落下してコネクタ端子４から外れた方向へ案内される金属屑落下経路Ｅを辿る。従って、ネジ穴７の下方にあるコネクタ端子４に金属屑が堆積することを防止できる。   Therefore, in the first embodiment, in order to prevent the possibility of a short circuit failure due to metal scrap, the blade portions 8a and 8b are arranged on the metal scrap dropping path D while being shifted from each other and dropped from the screw hole 7. The metal scrap falling path is changed from the metal scrap falling path D to the metal scrap falling path E. In addition, inclined surfaces 8a-1 and 8b-1 are formed on the blade portions 8a and 8b, respectively, which are inclined in the changing direction of the metal dust dropping path. Thereby, the metal scrap that has fallen from the screw hole 7 falls on the inclined surface 8a-1 of the blade portion 8a immediately below the screw hole 7, is guided in the direction of the blade portion 8b, and the inclined surface 8b− of the blade portion 8b. 1 is followed by a metal scrap dropping path E which is guided in a direction away from the connector terminal 4. Therefore, it is possible to prevent metal scraps from being deposited on the connector terminal 4 below the screw hole 7.

実施の形態１では、金属屑のコネクタ端子４への堆積を、コネクタ端子４または金属屑落下経路Ｄ上に新たな部品を追加して防止するのではなく、電子機器１の既存の部品、ここではコネクタホルダ６に羽根部８ａ，８ｂの形状をプレス加工等により設けて防止するので、低コストで実現可能である。
羽根部８ａ，８ｂを設ける部品はコネクタホルダ６に限定されるものではなく、金属屑落下経路Ｄ付近に存在する既存の部品であればよい。 In the first embodiment, the accumulation of metal scrap on the connector terminal 4 is not prevented by adding a new component on the connector terminal 4 or the metal scrap dropping path D, but the existing component of the electronic device 1, here Then, since the shape of the blade portions 8a and 8b is provided in the connector holder 6 by press working or the like, it can be realized at low cost.
The parts provided with the blade portions 8a and 8b are not limited to the connector holder 6 and may be existing parts existing in the vicinity of the metal scrap dropping path D.

以上より、実施の形態１によれば、既存のコネクタホルダ６に、ネジ穴７にタッピングネジを締結するときに発生する金属屑の金属屑落下経路Ｄ上に配置されてこの金属屑落下経路Ｄを金属屑落下経路Ｅに変更する羽根部８ａ，８ｂを設ける構成にした。このため、金属屑の落下によるコネクタ端子４の短絡不具合を防止可能なネジ締結構造および電子機器１を、低コストに実現することができる。   As described above, according to the first embodiment, the existing connector holder 6 is disposed on the metal scrap dropping path D of the metal scrap generated when the tapping screw is fastened to the screw hole 7, and this metal scrap falling path D is disposed. Are provided with blade portions 8a and 8b for changing the metal scrap to the metal scrap dropping path E. For this reason, the screw fastening structure and the electronic device 1 which can prevent the short circuit fault of the connector terminal 4 by fall of a metal scrap can be implement | achieved at low cost.

また、実施の形態１によれば、羽根部８ａ，８ｂに、金属屑の落下経路の変更方向に傾斜した傾斜面８ａ−１，８ｂ−１を形成するようにしたので、傾斜面８ａ−１，８ｂ−１で金属屑の落下方向を案内して、より確実に金属屑のコネクタ端子４への落下防止を図ることができる。   Further, according to the first embodiment, the inclined surfaces 8a-1 and 8b-1 that are inclined in the changing direction of the metal scrap dropping path are formed on the blade portions 8a and 8b. , 8b-1 can guide the falling direction of the metal scrap to prevent the metal scrap from falling onto the connector terminal 4 more reliably.

また、実施の形態１によれば、複数の羽根部８ａ，８ｂを、金属屑の落下経路の変更方向に階段状に設けるようにしたので、金属屑の落下経路の変更距離を延ばして、より確実に金属屑のコネクタ端子４への落下防止を図ることができる。   Further, according to the first embodiment, the plurality of blade portions 8a and 8b are provided stepwise in the changing direction of the falling path of the metal scrap, so that the change distance of the falling path of the metal scrap is extended and more It is possible to reliably prevent the metal scrap from dropping onto the connector terminal 4.

なお、図１〜図４では２個の羽根部８ａ，８ｂを形成したが、１個または３個以上形成してもよい。
ここで、図５に、電子機器１のネジ締結構造の変形例を示す。図５の変形例では、コネクタホルダ６に横向きにネジ穴７が形成され、ネジ穴７の下方に１個の羽根部８ｂが設けられている。横向きのタッピングネジねじ込み方向Ｃからネジ穴７へ、不図示のタッピングネジをねじ込む際に発生する金属屑は、羽根部８ｂの傾斜面８ｂ−１に落下してコネクタ端子４から外れた方向へ案内される金属屑落下経路Ｅを辿る。従って、この変形例の場合にも、ネジ穴７の下方にあるコネクタ端子４に金属屑が堆積することを防止できる。 1 to 4, the two blade portions 8a and 8b are formed, but one or three or more may be formed.
Here, FIG. 5 shows a modification of the screw fastening structure of the electronic apparatus 1. In the modification of FIG. 5, a screw hole 7 is formed in the connector holder 6 in the lateral direction, and one blade portion 8 b is provided below the screw hole 7. Metal scrap generated when a tapping screw (not shown) is screwed into the screw hole 7 from the lateral tapping screw screwing direction C falls on the inclined surface 8b-1 of the blade 8b and is guided in a direction away from the connector terminal 4. The metal scrap falling path E is traced. Therefore, also in this modification, it is possible to prevent metal scraps from being deposited on the connector terminal 4 below the screw hole 7.

上記以外にも、本発明はその発明の範囲内において、実施の形態の任意の構成要素の変形、もしくは実施の形態の任意の構成要素の省略が可能である。   In addition to the above, within the scope of the present invention, any component of the embodiment can be modified or any component of the embodiment can be omitted.

１ 電子機器、２ シャーシ、３ 回路基板、４ コネクタ端子、５ コネクタ、６ コネクタホルダ、７ ネジ穴、８ａ，８ｂ 羽根部、８ａ−１，８ｂ−１ 傾斜面、Ｃ タッピングネジねじ込み方向、Ｄ，Ｅ 金属屑落下経路。   1 electronic device, 2 chassis, 3 circuit board, 4 connector terminal, 5 connector, 6 connector holder, 7 screw hole, 8a, 8b blade, 8a-1, 8b-1 inclined surface, C tapping screw screwing direction, D, E Metal scrap falling path.

Claims (4)

タッピングネジを締結するネジ穴が形成された金属部材を有する電子機器のネジ締結構造であって、
前記電子機器の内部にて前記タッピングネジを締結して取り付けられる部材には、前記ネジ穴に前記タッピングネジを締結するときに発生する金属屑の落下経路上に配置されて当該金属屑の落下経路を変更する羽根部が設けられていることを特徴とする電子機器のネジ締結構造。 A screw fastening structure of an electronic device having a metal member in which a screw hole for fastening a tapping screw is formed,
A member attached by fastening the tapping screw inside the electronic device is disposed on a metal dust drop path that is generated when the tapping screw is fastened to the screw hole. The screw fastening structure of the electronic device characterized by the fact that the blade | wing part which changes is provided. 前記羽根部は、前記金属屑の落下経路の変更方向に傾斜した傾斜面を有することを特徴とする請求項１記載の電子機器のネジ締結構造。   2. The screw fastening structure for an electronic device according to claim 1, wherein the blade portion has an inclined surface that is inclined in a direction in which the falling path of the metal scrap is changed. 前記羽根部は、前記金属屑の落下経路の変更方向に階段状に複数設けられていることを特徴とする請求項１または請求項２記載の電子機器のネジ締結構造。   3. The screw fastening structure for an electronic device according to claim 1, wherein a plurality of the blade portions are provided stepwise in a change direction of the falling path of the metal scrap. 請求項１から請求項３のうちのいずれか１項記載のネジ締結構造を備えることを特徴とする電子機器。   An electronic apparatus comprising the screw fastening structure according to any one of claims 1 to 3.
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