JP2006172905A - Grounding terminal - Google Patents

Grounding terminal Download PDF

Info

Publication number
JP2006172905A
JP2006172905A JP2004363962A JP2004363962A JP2006172905A JP 2006172905 A JP2006172905 A JP 2006172905A JP 2004363962 A JP2004363962 A JP 2004363962A JP 2004363962 A JP2004363962 A JP 2004363962A JP 2006172905 A JP2006172905 A JP 2006172905A
Authority
JP
Japan
Prior art keywords
outside
ground terminal
housing
ground
waterproof
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2004363962A
Other languages
Japanese (ja)
Inventor
Manabu Tateishi
学 立石
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Kokusai Electric Inc
Original Assignee
Hitachi Kokusai Electric Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Kokusai Electric Inc filed Critical Hitachi Kokusai Electric Inc
Priority to JP2004363962A priority Critical patent/JP2006172905A/en
Publication of JP2006172905A publication Critical patent/JP2006172905A/en
Pending legal-status Critical Current

Links

Images

Abstract

<P>PROBLEM TO BE SOLVED: To provide a grounding terminal capable of securing waterproof capacity without applying a waterproof treatment such as coating of an adhesive separately at the time of installation to a device. <P>SOLUTION: The grounding terminal component 102 has a shaft part 201 which is inserted from the outside of a device into a through hole formed in a case of the device and to which a grounding wire inside the device is connected, and a head part 202 which is arranged at the outside of the device and to which the grounding wire outside the device is connected. A groove is formed at a face contacting the case of the head part 202, and a waterproof member (for example, O-ring) 204 is inserted into the groove. Furthermore, a screw hole 203 for installing the grounding wire outside the device is formed on the face opposite to the face where the groove of the head part 202 is formed. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、通信機器や電子機器等を接地するための接地(GND)端子に関する。   The present invention relates to a ground (GND) terminal for grounding communication equipment, electronic equipment, and the like.

通信機器や電子機器等の装置では、装置と大地とをアース線を用いて接続するのが一般的である。これは、装置がアース線で接地されていないと、人間がその装置に触れた瞬間に、機器に蓄積された電圧が直接人体に流れ、感電する恐れがあるためである。   In a device such as a communication device or an electronic device, the device and the ground are generally connected using a ground wire. This is because, if the device is not grounded by the ground wire, the voltage stored in the device flows directly to the human body at the moment when the person touches the device, and there is a risk of electric shock.

また、人体に及ぼす影響以外にも、装置が接地されていないと、装置内部で共通のGND(アース)が確保できず、機器内部の電気信号が不安定となり、装置が誤動作する恐れもある。また、RF系の信号増幅器を使用している場合も、GNDの確保が重要とされる。   In addition to the influence on the human body, if the device is not grounded, a common GND (ground) cannot be secured inside the device, the electric signal inside the device becomes unstable, and the device may malfunction. In addition, it is important to secure GND even when an RF signal amplifier is used.

このような背景のもと、一般に、通信機器や電子機器等の装置では、装置を接地するための接地端子が設けられている。   Under such circumstances, in general, devices such as communication devices and electronic devices are provided with a ground terminal for grounding the device.

一方、通信機器や電子機器等の装置の中には、屋外やトンネル内に設置されるものがある。かかる装置については、通常、雨水や高湿度(トンネル内の湿度は非常に高い)に対する対策が必要になる。   On the other hand, some devices such as communication devices and electronic devices are installed outdoors or in tunnels. Such devices usually require measures against rainwater and high humidity (the humidity in the tunnel is very high).

図3及び図4は、防水仕様の装置における従来の接地端子の構造を示す図である。   3 and 4 are diagrams showing the structure of a conventional ground terminal in a waterproof device.

図3は、装置の筐体が板金構造の場合の従来の接地端子の構造を示す図であり、同図(a)は、側面図を示し、同図(b)は、正面図を示す。   FIGS. 3A and 3B are diagrams showing the structure of a conventional ground terminal when the housing of the apparatus has a sheet metal structure, where FIG. 3A shows a side view and FIG. 3B shows a front view.

同図に示すように、接地端子300においては、筐体側面301に形成された貫通孔に、装置内部から六角ボルト302が挿入され、筐体外部へ突き出た六角ボルト302の軸部(ネジ部)に、ナット303a及びワッシャ類304aが嵌められて固定される。更に、固定された六角ボルト302の軸部に、アース線305が、ナット303b及びワッシャ類304bで固定され接続される。   As shown in the figure, in the ground terminal 300, a hexagon bolt 302 is inserted into a through-hole formed in the case side surface 301 from the inside of the apparatus and protrudes to the outside of the case (screw portion). ) And a nut 303a and washers 304a are fitted and fixed. Further, the ground wire 305 is fixed and connected to the shaft portion of the fixed hexagon bolt 302 with a nut 303b and washers 304b.

接地端子300においては、筐体側面301に六角ボルト302を通す貫通孔があけられるので、装置の防水性を確保するために、装置内部のボルト挿入部分には、エポキシ系接着剤等が塗布される。つまり、ボルトを挿入してから後工程で接着剤等を塗布する必要がある。   In the ground terminal 300, a through-hole through which the hexagonal bolt 302 is passed is formed in the housing side surface 301. Therefore, an epoxy adhesive or the like is applied to the bolt insertion portion inside the device in order to ensure the waterproofness of the device. The That is, it is necessary to apply an adhesive or the like in a later process after inserting the bolt.

図4は、装置の筐体がアルミダイカスト構造の場合の従来の接地端子の構造を示す図であり、同図(a)は、側面図を示し、同図(b)は、正面図を示す。   4A and 4B are diagrams showing the structure of a conventional ground terminal when the casing of the apparatus has an aluminum die-cast structure, where FIG. 4A shows a side view and FIG. 4B shows a front view. .

装置の筐体がアルミダイカスト等で製作される場合は、筐体側面の肉厚を厚くとることができる。そこで、同図に示すように、接地端子400においては、筐体側面401の外側に、外側から内側へ貫通しないネジ穴を形成し、アース線固定用ネジ406によって、アース線405を筐体側面401に固定する。   When the casing of the apparatus is manufactured by aluminum die casting or the like, the side wall of the casing can be made thick. Therefore, as shown in the figure, in the ground terminal 400, a screw hole that does not penetrate from the outside to the inside is formed on the outside of the housing side surface 401, and the ground wire 405 is connected to the side surface of the housing by the ground wire fixing screw 406. It fixes to 401.

この場合、筐体を貫通する孔が存在しないので、図3の構造と比較して高い防水性を確保することができる。しかしながら、装置内部のGNDと装置外部のGNDとを直接的に接続できる構造ではないので、一度筐体の側面(アルミダイカストの肉厚)を通電させて、内部と電気的に接続させることになる。よって、内部と外部とでインピーダンスの不整合が生じる恐れがある。   In this case, since there is no hole penetrating the casing, it is possible to ensure high waterproofness as compared with the structure of FIG. However, since the GND inside the device and the GND outside the device cannot be directly connected, the side surface of the casing (thickness of the aluminum die casting) is energized and electrically connected to the inside. . Therefore, impedance mismatch may occur between the inside and the outside.

上述したように、防水仕様の装置において、筐体側面が薄い構造(例えば、板金構造)を採用した場合は、装置内部からボルトを通して外部へ出す接地端子構造が必要とされるため、接地端子を取り付け後、貫通孔の部分に防水処理を別途施さなければならなかった。一方、防水仕様の装置において、筐体側面が厚い構造(例えば、アルミダイカスト構造)を採用した場合は、装置内部のGNDと装置外部のGNDとを直接的に接続することができないため、内部と外部とでインピーダンスの不整合が生じる恐れがあった。   As described above, when a structure with a thin casing (for example, a sheet metal structure) is adopted in a waterproof device, a ground terminal structure is required to be connected to the outside through a bolt from the inside of the device. After installation, the through-holes had to be waterproofed separately. On the other hand, when a structure with a thick casing (for example, an aluminum die-cast structure) is used in a waterproof device, the GND inside the device and the GND outside the device cannot be directly connected. There was a risk of impedance mismatch with the outside.

なお、特開平10−285095号公報には、移動通信における中継増幅装置の子局(移動局向けのアンテナ付き増幅装置)をトンネル内に設けることが開示されている。例えば、本発明は、当該子局に適用することができる。また、特開2004−63785号公報及び特開2004−92308号公報には、電子機器等を収容する筐体の防水構造の例が開示されている。
特開平10−285095号公報 特開2004−63785号公報 特開2004−92308号公報
Japanese Patent Laid-Open No. 10-285095 discloses that a slave station (amplifier with antenna for a mobile station) of a relay amplifier in mobile communication is provided in a tunnel. For example, the present invention can be applied to the slave station. Japanese Patent Application Laid-Open Nos. 2004-63785 and 2004-92308 disclose examples of a waterproof structure of a housing that houses an electronic device or the like.
Japanese Patent Laid-Open No. 10-285095 JP 2004-63785 A JP 2004-92308 A

本発明の目的は、装置への取り付け時に、別途、接着剤の塗布等の防水処理をすることなく、防水性を確保することができる接地端子を提供することにある。   An object of the present invention is to provide a ground terminal capable of ensuring waterproofness without separately performing waterproofing treatment such as application of an adhesive when being attached to a device.

本発明に係る接地端子は、装置の筐体に形成された貫通孔に装置外部から挿入され、装置内部のアース線が接続される軸部と、装置外部に配置され、装置外部のアース線が接続される頭部とを備え、前記頭部の筐体に接する面に、防水用部材(例えば、Oリング)が嵌め込まれる溝部が形成されていることを特徴とする。   The ground terminal according to the present invention is inserted from the outside of the apparatus into a through-hole formed in the casing of the apparatus, and is disposed outside the apparatus and a shaft portion to which the ground wire inside the apparatus is connected. And a groove portion into which a waterproofing member (for example, an O-ring) is fitted is formed on the surface of the head that contacts the housing.

この場合において、前記頭部に、装置外部のアース線取付用のネジ穴を形成するようにしてもよい。   In this case, a screw hole for attaching an earth wire outside the apparatus may be formed in the head.

本発明によれば、装置への取り付け時に、別途、防水処理をすることなく、防水性を確保することができる接地端子が提供される。   ADVANTAGE OF THE INVENTION According to this invention, the ground terminal which can ensure waterproofness is provided, without performing a waterproofing process separately at the time of the attachment to an apparatus.

以下、本発明の実施の形態について、図面を参照しつつ詳細に説明する。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

図1は、本発明による接地端子の全体構造を示す図である。本発明による接地端子は、防水仕様の装置に適用されるものである。   FIG. 1 is a diagram showing an overall structure of a ground terminal according to the present invention. The ground terminal according to the present invention is applied to a waterproof device.

同図に示すように、本発明による接地端子100においては、板金構造の筐体の側面101に形成された貫通孔に、接地端子部品102が、筐体外側から嵌め込まれ、筐体内部に突き出た接地端子部品102の軸部(ネジ部)に、ナット103a及びワッシャ類104aが嵌められて固定される。更に、装置内部において、固定された接地端子部品102の軸部に、装置内部アース線107が、ナット103b及びワッシャ類104bで固定され接続される。装置内部アース線107は、装置内部の電子部品(例えば基板等)に直接接続される。また、装置外部において、接地端子部品102の頭部(ナット形状部)に、アース線105がアース線固定用ネジ106で固定され接続される。   As shown in the figure, in the ground terminal 100 according to the present invention, the ground terminal component 102 is fitted from the outside of the housing into the through hole formed in the side surface 101 of the sheet metal structure housing, and protrudes into the housing. The nut 103a and washers 104a are fitted and fixed to the shaft portion (screw portion) of the ground terminal component 102. Further, in the device, the device internal ground wire 107 is fixed and connected to the shaft portion of the fixed ground terminal component 102 by the nut 103b and the washers 104b. The device internal ground wire 107 is directly connected to an electronic component (for example, a substrate) inside the device. In addition, outside the apparatus, the ground wire 105 is fixed and connected to the head (nut-shaped portion) of the ground terminal component 102 with a ground wire fixing screw 106.

図2は、接地端子部品102の構造を示す図であり、同図(a)は、正面図を示し、同図(b)は、右側面図を示し、同図(c)は、断面図を示す。   2A and 2B are diagrams showing the structure of the ground terminal component 102. FIG. 2A is a front view, FIG. 2B is a right side view, and FIG. 2C is a cross-sectional view. Indicates.

同図に示すように、接地端子部品102は、六角ボルト状の形状を有しており、軸部201と頭部202とを有する。   As shown in the figure, the ground terminal component 102 has a hexagonal bolt shape and has a shaft portion 201 and a head portion 202.

軸部201は、装置の筐体に形成された貫通孔に挿入される部分であり、ナット103a,103bを嵌め合わせることができるようネジ山が形成されている。   The shaft portion 201 is a portion that is inserted into a through-hole formed in the housing of the apparatus, and is threaded so that the nuts 103a and 103b can be fitted together.

頭部202は、装置の外側に配置される部分であり、スパナ等の工具によって簡単に締め付けることができる形状、具体的には、概ね六角柱の形状を有している。   The head portion 202 is a portion disposed outside the device, and has a shape that can be easily tightened with a tool such as a spanner, specifically, a generally hexagonal prism shape.

また、頭部202の装置に接する面には、軸部201の付け根部分を囲うように、断面が矩形の環状溝が形成されており、当該環状溝には、断面が円形の環状の防水用パッキン(Oリング)204が嵌め込まれている。接地端子部品102は、防水用パッキン(Oリング)204を備えているので、装置の外側から嵌め込むだけで装置の防水性を確保できる。   In addition, an annular groove having a rectangular cross section is formed on the surface of the head 202 in contact with the device so as to surround the base portion of the shaft portion 201, and the annular groove has an annular cross section for waterproofing. A packing (O-ring) 204 is fitted. Since the ground terminal component 102 includes the waterproof packing (O-ring) 204, the waterproof property of the device can be ensured only by fitting from the outside of the device.

また、頭部202の環状溝が形成された面の反対側の面には、アース線取付用のネジ穴203が形成されている。ネジ穴203にアース線固定用ネジ106をねじ込むことで、アース線105を固定することができる。   A screw hole 203 for attaching a ground wire is formed on the surface of the head 202 opposite to the surface where the annular groove is formed. The ground wire 105 can be fixed by screwing the ground wire fixing screw 106 into the screw hole 203.

このような構造を有する接地端子部品102によれば、装置の筐体に外側から嵌め込むだけで、防水用パッキン204により防水性を確保できるので、内部にエポキシ系接着剤等での補強が必要とされず、取り付け作業が簡単になる。   According to the ground terminal component 102 having such a structure, waterproofing can be ensured by the waterproof packing 204 simply by fitting into the casing of the apparatus from the outside, so that reinforcement with an epoxy adhesive or the like is required inside The installation work is simplified.

また、装置内部のGNDと装置外部のGNDとが、接地端子部品102一個を通して直接接続されて通電されるため、装置内部と外部とのインピーダンス整合が取れやすく、共通のGND確保が可能となる。   Further, since the GND inside the device and the GND outside the device are directly connected and energized through one ground terminal component 102, impedance matching between the inside and outside of the device can be easily achieved, and a common GND can be secured.

また、頭部202には、アース線固定用ネジ106をねじ込むことができるネジ穴203が形成されているので、接地用のアース線105を簡単に取り付けることができる。   Further, since the screw hole 203 into which the ground wire fixing screw 106 can be screwed is formed in the head 202, the grounding ground wire 105 can be easily attached.

本発明による接地端子の全体構造を示す図である。It is a figure which shows the whole structure of the ground terminal by this invention. 接地端子部品の構造を示す図である。It is a figure which shows the structure of a ground terminal component. 装置の筐体が板金構造の場合の従来の接地端子の構造を示す図である。It is a figure which shows the structure of the conventional ground terminal in case the housing | casing of an apparatus is a sheet metal structure. 装置の筐体がアルミダイカスト構造の場合の従来の接地端子の構造を示す図である。It is a figure which shows the structure of the conventional ground terminal in case the housing | casing of an apparatus is an aluminum die-casting structure.

符号の説明Explanation of symbols

100・・・接地端子、
101・・・筐体側面、
102・・・接地端子部品、
103a,103b・・・ナット、
104a,104b・・・ワッシャ類、
105・・・アース線、
106・・・アース線固定用ネジ、
107・・・装置内部アース線、
201・・・軸部、
202・・・頭部、
203・・・ネジ穴、
204・・・防水用パッキン、
300・・・接地端子、
301・・・筐体側面、
302・・・六角ボルト、
303a,303b・・・ナット、
304a,304b・・・ワッシャ類、
305・・・アース線、
400・・・接地端子、
401・・・筐体側面、
405・・・アース線、
406・・・アース線固定用ネジ、
100: Ground terminal,
101 ... side surface of housing,
102: Grounding terminal component,
103a, 103b ... nuts,
104a, 104b ... washers,
105 ... earth wire,
106: Screw for fixing the ground wire,
107 ... Ground wire inside the device,
201 ... shaft part,
202 ... head,
203 ... screw hole,
204 ... Waterproof packing,
300: Ground terminal,
301 ... side surface of housing,
302 ... Hex bolt,
303a, 303b ... nuts,
304a, 304b ... washers,
305 ... Earth wire,
400: Ground terminal,
401 ... side surface of housing,
405: Earth wire,
406... Screw for fixing the ground wire,

Claims (1)

装置の筐体に形成された貫通孔に装置外部から挿入され、装置内部のアース線が接続される軸部と、
装置外部に配置され、装置外部のアース線が接続され、前記頭部の筐体に接する面に、防水用部材が嵌め込まれる溝部が形成されている頭部と
とを有する接地端子。
A shaft portion that is inserted from the outside of the device into a through-hole formed in the housing of the device and connected to the ground wire inside the device,
A grounding terminal having a head portion disposed outside the device, connected to a ground wire outside the device, and having a groove portion into which a waterproof member is fitted on a surface of the head portion that contacts the housing.
JP2004363962A 2004-12-16 2004-12-16 Grounding terminal Pending JP2006172905A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2004363962A JP2006172905A (en) 2004-12-16 2004-12-16 Grounding terminal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004363962A JP2006172905A (en) 2004-12-16 2004-12-16 Grounding terminal

Publications (1)

Publication Number Publication Date
JP2006172905A true JP2006172905A (en) 2006-06-29

Family

ID=36673418

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004363962A Pending JP2006172905A (en) 2004-12-16 2004-12-16 Grounding terminal

Country Status (1)

Country Link
JP (1) JP2006172905A (en)

Similar Documents

Publication Publication Date Title
WO2008051957A3 (en) Lighting devices and methods of installing light engine housings and/or trim elements in lighting device housings
DE69906237D1 (en) Electrical connecting bolt
JPH11341583A (en) Output connector device for microphone
JP2006172905A (en) Grounding terminal
JP2005188945A (en) Voltage-drop type current measuring device
DE502005007263D1 (en) Mounting part for a liquid-tight cable entry
JP6616992B2 (en) Electronics
JP2005050555A (en) Fixing structure of penetration object
JP5108732B2 (en) Crimp terminal insulation cover
JP4501803B2 (en) Electronic equipment structure
JP4978164B2 (en) Insulating structure and electronic device using the same
JP3128285U (en) Radial board for antenna base
JP7081942B2 (en) Housing for electrical equipment
JP2010132216A (en) On-vehicle electronic device
JP2003015110A (en) Conductive connection structure of liquid crystal panel
JPH04167376A (en) Ground connection device for wiring substrate
JPH0421253Y2 (en)
JPH0561507U (en) Mounting structure for fastening screws for outdoor enclosures
JPH0623025Y2 (en) Device for fixing metal plates in the housing of electric equipment
JP2002185167A (en) Structure for attaching electronic component
JP2001184140A (en) Method for grounding personal computer
JP2596591Y2 (en) Terminal structure
JPH01204499A (en) Ground connecting structure for plastic cover
JPH0622933Y2 (en) Conductive connection device
JP2015018739A (en) Cable take-out structure

Legal Events

Date Code Title Description
A621 Written request for application examination

Effective date: 20070330

Free format text: JAPANESE INTERMEDIATE CODE: A621

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20090427

A131 Notification of reasons for refusal

Effective date: 20090609

Free format text: JAPANESE INTERMEDIATE CODE: A131

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20090806

A02 Decision of refusal

Effective date: 20100301

Free format text: JAPANESE INTERMEDIATE CODE: A02