JPH0731507Y2 - Grounding structure of electronic equipment - Google Patents
Grounding structure of electronic equipmentInfo
- Publication number
- JPH0731507Y2 JPH0731507Y2 JP1988141212U JP14121288U JPH0731507Y2 JP H0731507 Y2 JPH0731507 Y2 JP H0731507Y2 JP 1988141212 U JP1988141212 U JP 1988141212U JP 14121288 U JP14121288 U JP 14121288U JP H0731507 Y2 JPH0731507 Y2 JP H0731507Y2
- Authority
- JP
- Japan
- Prior art keywords
- hole
- case
- main body
- holes
- case body
- 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.)
- Expired - Lifetime
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/66—Connections with the terrestrial mass, e.g. earth plate, earth pin
Landscapes
- Multi-Conductor Connections (AREA)
- Mounting Of Printed Circuit Boards And The Like (AREA)
Description
【考案の詳細な説明】 [産業上の利用分野] 本考案は電子機器のアース構造に係り、さらに詳しく
は、例えばプログラマブルコントローラを構成する入力
部ユニット、出力部ユニット、CPUユニット等に実施し
て特に有効な電子機器のアース構造に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a grounding structure of an electronic device, and more specifically, it is applied to an input unit, an output unit, a CPU unit, etc. which constitute a programmable controller, for example. The present invention relates to a particularly effective ground structure of an electronic device.
[従来の技術] 第7図は従来のプログラマブルコントローラ(以下PCと
いう)の一例の斜視図である。図において、1は合成樹
脂材料からなり、正面が開口した箱形のケース、2はケ
ース1内に挿入され表面パネルがケース1にねじ止めさ
れた電源ユニット、3は電源ユニット2に隣接して表面
パネルがケース1にねじ止めされたCPUユニットで、こ
れら電源ユニット2とCPUユニット3の上には、CPUユニ
ット3の接続部4に接続されるコネクタ6を有する制御
プログラム設定器5(以下設定器という)が載置され、
ねじにより固定されている。7は入力部ユニット、8は
出力部ユニットで、CPUユニット3と並設して表面パネ
ルがケース1にねじ止めされており、これら両ユニット
7,8の表面パネル上には制御対象と接続される端子盤9
や信号表示部10が設けられており、また表面パネルの裏
面にはケース1の底部に設けたマザーボード(図示せ
ず)の信号線に接続されるコネクタを備えたプリント配
線基板11が取付けられている。そして、外部からの雑音
を抑制するため通常これらプリント配線基板をマザーボ
ードに設けたアース配線に接続している。[Prior Art] FIG. 7 is a perspective view of an example of a conventional programmable controller (hereinafter referred to as a PC). In the figure, 1 is a box-shaped case made of a synthetic resin material and having a front opening, 2 is a power supply unit which is inserted into the case 1 and whose front panel is screwed to the case 1, and 3 is adjacent to the power supply unit 2. The front panel is a CPU unit screwed to the case 1, and the control program setting unit 5 (hereinafter referred to as "setting program") having the connector 6 connected to the connecting portion 4 of the CPU unit 3 is provided on the power supply unit 2 and the CPU unit 3. Is called a vessel,
It is fixed by screws. Reference numeral 7 is an input unit, 8 is an output unit, and the front panel is screwed to the case 1 in parallel with the CPU unit 3.
Terminal board 9 connected to the controlled object on the front panel of 7,8
And a signal display portion 10 are provided, and a printed wiring board 11 having a connector connected to a signal line of a motherboard (not shown) provided at the bottom of the case 1 is attached to the back surface of the front panel. There is. In order to suppress noise from the outside, these printed wiring boards are usually connected to the ground wiring provided on the motherboard.
上記のような各部からなるPCは、設定器5においてあら
かじめ必要な制御プログラムを設定し、これをCPUユニ
ット3に記憶させておく。制御対象からの入力信号は入
力部ユニット7に加えられてCPUユニット3で演算さ
れ、演算結果に基づく制御信号を出力部ユニット8から
出力し、制御対象を設定器5の設定値に基いて制御す
る。In the PC having the above-mentioned respective parts, the necessary control program is set in advance by the setter 5, and this is stored in the CPU unit 3. The input signal from the control target is added to the input unit 7 and is calculated by the CPU unit 3. The control signal based on the calculation result is output from the output unit 8 and the control target is controlled based on the set value of the setter 5. To do.
[考案が解決しようとする課題] 上述のようにPCは優れた制御機能を有するため、現在、
産業界で広範囲に使用されている。しかしながら、入力
部ユニットや出力部ユニット等のアース端子の接続作業
が面倒で、特にこれらユニットを高密度実装する場合
は、アース端子の数が増加してコストアップになるばか
りでなく、その接続作業に多くの時間を要するという問
題があった。[Problems to be solved by the invention] As described above, since the PC has an excellent control function,
Widely used in industry. However, the work of connecting the ground terminals of the input unit and output unit, etc. is troublesome, and especially when these units are mounted in high density, not only will the number of ground terminals increase and the cost will increase, but also the work of connecting them. There was a problem that it took a lot of time.
本考案は上記の課題のを解決すべくなれさたもので、構
造が簡単でワンタッチでアース端子を接続することので
きる電子機器のアース構造を得ることを目的としたもの
である。The present invention has been made in order to solve the above problems, and an object thereof is to obtain a grounding structure for an electronic device, which has a simple structure and can be connected to the grounding terminal with one touch.
[課題を解決するための手段] 本考案に係る電子機器のアース構造は、背面に所定の間
隔で設けられた溝穴及びこの溝穴間に設けられた貫通穴
を有するケース本体と、該ケース本体の貫通穴に対応し
た位置に係合穴を有し、外面にマザーボード等に接触す
る接触子が設けられた本体及び該本体の両端部に設けら
れ前記ケース本体の溝穴に挿入される脚部からなるアー
ス端子金具と、前記ケース本体内に挿入されるプリント
配線基板に設けられたアース用の配線パターンに接続さ
れ、前記ケース本体の貫通穴の近傍に位置するアース部
材とからなり、前記ケース本体の溝穴にアース端子金具
の脚部を嵌入し、該アース端子金具の係合穴に挿通した
ねじを前記ケース本体に設けた貫通穴を介して前記アー
ス部材に設けたねじ穴に螺入したものである。[Means for Solving the Problems] An earth structure of an electronic device according to the present invention includes a case main body having slot holes provided at predetermined intervals on a back surface and through holes provided between the slot holes, and the case body. A main body having an engaging hole at a position corresponding to a through hole of the main body, and an outer surface provided with contacts for contacting a mother board and the like, and legs provided at both ends of the main body and inserted into the slot holes of the case main body And a grounding member that is connected to a grounding wiring pattern provided on a printed wiring board that is inserted into the case body and that is located near a through hole of the case body. Fit the leg of the ground terminal fitting into the groove of the case body, and screw the screw inserted into the engaging hole of the ground terminal fitting into the screw hole provided in the ground member through the through hole provided in the case body. I put it in It
[作用] ケース本体の背面に設けた溝穴にアース端子金具の脚部
を挿入して係合穴をケース本体の貫通穴に嵌合し、つい
で係合穴にねじを挿通してアース部材のねじ穴に螺入
し、アース端子金具、ねじ及びアース部材を一体的に結
合する。[Operation] Insert the leg of the ground terminal fitting into the groove provided on the back surface of the case body, fit the engagement hole into the through hole of the case body, and then insert a screw into the engagement hole to connect the ground member. It is screwed into the screw hole and the ground terminal fitting, screw and ground member are integrally connected.
[発明の実施例] 第5図は本考案実施例の斜視図で、21はケース本体、41
はケース本体21の開口部に装着されたパネル、61はパネ
ル41に設けた表示部、65は表示板、71はカバーである。[Embodiment of the Invention] FIG. 5 is a perspective view of an embodiment of the present invention, in which 21 is a case body and 41
Is a panel attached to the opening of the case body 21, 61 is a display unit provided on the panel 41, 65 is a display plate, and 71 is a cover.
次に、本考案に係る入力部ユニット1aの詳細を第6図の
分解斜視図により説明する。第6図において、21は正面
が開放された箱状のケース本体で、長手方向の両壁面に
は多数の通気孔22が設けられている。23は開口部の内壁
に突設された係合突起、24は係合突起23の下方に貫設さ
れた係合穴である。25は後部縦壁の内側に設けられたプ
リント配線基板の案内溝である。この案内溝は、ケース
本体21の前部縦壁あるいは底部に設けてもよい。なお、
27,28はケース本体21の底部に設けた窓穴で、後述のプ
リント配線基板に取付けられ、ベースボードに設けたマ
ザーボードに接続されるコネクタが挿入される。Next, details of the input unit 1a according to the present invention will be described with reference to the exploded perspective view of FIG. In FIG. 6, reference numeral 21 denotes a box-shaped case body having an open front surface, and a large number of ventilation holes 22 are provided on both wall surfaces in the longitudinal direction. Reference numeral 23 is an engaging projection provided on the inner wall of the opening, and 24 is an engaging hole formed below the engaging projection 23. Reference numeral 25 is a guide groove of the printed wiring board provided inside the rear vertical wall. The guide groove may be provided on the front vertical wall or the bottom of the case body 21. In addition,
Reference numerals 27 and 28 denote window holes provided at the bottom of the case main body 21, into which a connector to be attached to a printed wiring board described later and to be connected to a mother board provided on a base board is inserted.
41はパネルで、下面両側にはケース本体21の開口部に嵌
合するガイド板42(図には一方だけ示してある)が垂設
され、その外面にはケース本体21の係合突起23と係合す
る切除部43、及び係合穴24と係合する突起部44が設けら
れている。なお、図示していないが、ガイド板42の内側
にはプリント配線基板が固定される。45は表示部で、一
方の端部には先端部に係止爪47を有する係止片46が垂設
されている。48は表示部45の上面に設けられた発光ダイ
オードや数字表示器等を収容する表示器室で、上面には
表示窓49が形成されており、また両側壁には嵌合穴50が
設けられている。51は表示部45と後述する端子盤取付部
53とを境界する縦壁で、表示器室48より低く、かつ表示
器室48側の中央部は切除されて凹部52が形成されてお
り、表示器室48との間にはすき間gが形成されている。
53は端子盤取付部、54は端子盤からの配線をケース本体
21内にとり込むための長穴である。55は端子盤取付部53
の後部に設けられた縦壁で、凸字状に切状した係止穴56
が設けられている。Reference numeral 41 denotes a panel, and guide plates 42 (only one of which is shown in the figure) fitted in the opening of the case body 21 are vertically provided on both sides of the lower surface, and the engaging projections 23 of the case body 21 are provided on the outer surface thereof. A cutting portion 43 that engages and a protrusion 44 that engages with the engagement hole 24 are provided. Although not shown, a printed wiring board is fixed inside the guide plate 42. Reference numeral 45 is a display portion, and a locking piece 46 having a locking claw 47 at its tip is vertically provided at one end. Reference numeral 48 is a display chamber for accommodating a light emitting diode, a numerical display, etc. provided on the upper surface of the display unit 45, a display window 49 is formed on the upper surface, and fitting holes 50 are provided on both side walls. ing. 51 is a display part 45 and a terminal board mounting part described later.
A vertical wall that borders 53 and is lower than the display chamber 48, and the central portion on the display chamber 48 side is cut away to form a recess 52, and a gap g is formed between the display chamber 48 and the display chamber 48. Has been done.
53 is the terminal board mounting part, 54 is the wiring from the terminal board in the case body
It is an elongated hole for taking in 21. 55 is the terminal board mounting part 53
The vertical wall provided at the rear of the
Is provided.
61は透光性材料からなる表示部カバーで、表示器が示す
信号の状態を表わす数字や信号などが付されている。ま
た両側壁の内側には表示器室48の嵌合穴50に嵌合する係
止部62が突設されており、さらに後部縦壁には切欠穴63
が形成されている。65は入力部ユニット、出力部ユニッ
ト、CPUユニット等を区別するためのT字状の表示板
で、一方の面には表示部カバー61の切欠穴63に嵌合する
突起66が設けられており、上方の中央部には貫通穴67が
明けられている。この表示板65は例えば赤、青、白色等
に着色され、前記各ユニットの種別を表示する。Reference numeral 61 is a display cover made of a translucent material, to which numbers and signals indicating the state of the signal indicated by the display are attached. A locking portion 62 that fits into the fitting hole 50 of the display chamber 48 is provided on the inner side of both side walls, and a cutout hole 63 is formed on the rear vertical wall.
Are formed. Reference numeral 65 is a T-shaped display plate for distinguishing the input unit, the output unit, the CPU unit, and the like, and a projection 66 that fits into the notch hole 63 of the display cover 61 is provided on one surface. A through hole 67 is formed in the upper central portion. The display plate 65 is colored, for example, red, blue, white or the like, and displays the type of each unit.
71は断面状のカバーで、一方の端部には表示板65の貫
通穴67に嵌入される突片72が設けられており、他方の端
部には第6図(b)に示すようにパネル41の縦壁55に設
けた係止穴56と係合する、弾性を有し先端部に係止爪74
を備えた係止片73が設けられている。Reference numeral 71 denotes a cross-section cover, one end of which is provided with a projecting piece 72 which is fitted into the through hole 67 of the display plate 65, and the other end of which is formed as shown in FIG. 6 (b). An engaging claw 74 having elasticity and engaging with a locking hole 56 provided on the vertical wall 55 of the panel 41
Is provided with a locking piece 73.
第3図(a)はケース本体21の背面図、(b)はそのA
−A拡大断面図である。30はケース本体21の背面の一方
の側(本実施例では表示部45側)に設けた凹部で、ケー
ス本体21の両側壁の内面側には突起31,31aとの間に溝穴
32,32aが形成されており、この凹部30の中心から一方の
側には貫通穴33が設けられ、他方の側には円形の凹所34
が形成されている。FIG. 3A is a rear view of the case body 21, and FIG.
-A is an enlarged sectional view. Reference numeral 30 denotes a recess provided on one side of the back surface of the case body 21 (in this embodiment, the display portion 45 side), and a groove is formed between the projections 31 and 31a on the inner surface side of both side walls of the case body 21.
32, 32a are formed, a through hole 33 is provided on one side from the center of the recess 30, and a circular recess 34 is provided on the other side.
Are formed.
第4図(a)はアース端子金具35の拡大断面図、(b)
はその平面図、(c)は側面図である。このアース端子
金具35は、本体36とその両端部をほゞ直角に折曲げて、
ケース本体21の凹部30の溝穴32,32aに嵌入される脚部3
7,37aとからなり、本体36には周縁が内側(脚部37,37a
側)に突出し、ケース本体21の凹部30に設けた貫通穴33
と凹所34に整合する位置に係合穴38,38aが設けられてい
る。38bは係合穴38,38aの内縁に形成された傾斜面、39,
39aは本体36の外面に突設され、マザーボードのアース
配線に接触する接触子である。40,40aは脚部37,37aの両
側に突設された係止爪である。4 (a) is an enlarged sectional view of the ground terminal fitting 35, (b).
Is a plan view thereof, and (c) is a side view. This ground terminal fitting 35 is formed by bending the main body 36 and both ends thereof at a substantially right angle,
Legs 3 that are fitted into the slots 32, 32a of the recess 30 of the case body 21
7,37a, and the main body 36 has an inner peripheral edge (legs 37,37a
Side) and the through hole 33 provided in the recess 30 of the case body 21.
And engaging holes 38, 38a are provided at positions aligned with the recess 34. 38b is an inclined surface formed on the inner edge of the engaging holes 38, 38a, 39,
Reference numeral 39a is a contact which is provided so as to project from the outer surface of the main body 36 and which comes into contact with the ground wiring of the motherboard. Reference numerals 40, 40a are locking claws provided on both sides of the leg portions 37, 37a.
なお、第1図において、81はパネル41の下面に装着され
たプリント配線基板で、これをケース21内に挿入したと
きにケース21の凹部30に設けた貫通穴33に対応する位置
には、プリント配線基板81に設けたアース用の配線パタ
ーンに接続されたアース部材82が取付けられている。83
はアース部材82に設けたねじ穴である。In FIG. 1, reference numeral 81 denotes a printed wiring board mounted on the lower surface of the panel 41, and at the position corresponding to the through hole 33 provided in the recess 30 of the case 21 when the printed wiring board is inserted into the case 21, A grounding member 82 connected to a grounding wiring pattern provided on the printed wiring board 81 is attached. 83
Is a screw hole provided in the ground member 82.
次に、第6図により上記のように構成した本考案の組立
の一例について説明する。Next, an example of the assembly of the present invention configured as described above will be described with reference to FIG.
(1)パネル41の表示部45に下から数字表示器等を挿入
し、表示窓49上に位置させて固定する。次に、表示部カ
バー61を表示器室48に嵌合する。この場合、表示部カバ
ー61の後部縦壁を表示器48と縦壁51とで形成するすき間
g内に嵌入して圧下すると、係止部62が嵌合穴50に係合
し、固定される。(1) Insert a numeral display or the like from below into the display portion 45 of the panel 41, position it on the display window 49 and fix it. Next, the display cover 61 is fitted into the display chamber 48. In this case, when the rear vertical wall of the display cover 61 is fitted into the gap g formed by the display 48 and the vertical wall 51 and pressed down, the locking portion 62 engages with the fitting hole 50 and is fixed. .
(2)縦壁51の凹部52に表示板65の脚部を挿入し、表示
部カバー61の切欠穴63にその突起61を係合させる。この
とき、表示板65の頂部は表示部カバーの上面とほゞ同一
平面に位置する。(2) The leg portion of the display plate 65 is inserted into the recess 52 of the vertical wall 51, and the protrusion 61 is engaged with the cutout hole 63 of the display portion cover 61. At this time, the top of the display plate 65 is located substantially flush with the upper surface of the display cover.
(3)端子盤取付部53に端子盤(図示せず)を配設し、
ねじで固定する。また、パネル41の下面にプリント配線
基板81(第1図参照)を装着する。(3) Place a terminal board (not shown) on the terminal board mounting portion 53,
Secure with screws. Further, the printed wiring board 81 (see FIG. 1) is mounted on the lower surface of the panel 41.
(4)上記のようにして各種の部品が取付けられたパネ
ル41をケース本体21の開口部に装着する。このとき、パ
ネル41に取付けたプリント配線基板をケース本体21に設
けた案内溝25に沿わせて下降させれば、突起部44が係合
穴24に、また切除部43は係合突起23にそれぞれ係合し、
また係止片46の係止爪47は放熱穴22に係合し、ワンタッ
チで両者を一体に結合することができる。(4) The panel 41 to which various parts are attached as described above is attached to the opening of the case body 21. At this time, if the printed wiring board attached to the panel 41 is lowered along the guide groove 25 provided in the case body 21, the protrusion 44 becomes the engaging hole 24 and the cutout 43 becomes the engaging protrusion 23. Engage each,
Further, the locking claw 47 of the locking piece 46 engages with the heat dissipation hole 22, and the two can be integrally combined with one touch.
なお、このとき、プリント配線基板に設けられ、ベース
ボードのマザーボードに設けたコネクタと接続するコネ
クタは、ケース本体21の底部に設けた窓穴27,28から外
部に露出している。At this time, the connector provided on the printed wiring board and connected to the connector provided on the motherboard of the base board is exposed to the outside through the window holes 27 and 28 provided at the bottom of the case body 21.
(5)ついで、第1図に示すように、ケース本体21の背
面に設けた凹部30の溝穴32,32aにアース端子金具35の脚
部37,37aを挿入し、係合穴38,38aの突出部を貫通穴33及
び凹所34に嵌合し位置決めする。このとき、脚部37,37a
に設けた係止爪40,40aが溝穴32,32aの側壁に喰込み、ア
ース端子金具35は強固に固定される。(5) Then, as shown in FIG. 1, the leg portions 37, 37a of the ground terminal fitting 35 are inserted into the groove holes 32, 32a of the recess 30 provided on the back surface of the case body 21, and the engaging holes 38, 38a are inserted. The protruding part of is fitted into the through hole 33 and the recess 34 and positioned. At this time, legs 37, 37a
The locking claws 40, 40a provided on the base plate bite into the side walls of the slots 32, 32a, and the ground terminal fitting 35 is firmly fixed.
この状態でアース端子金具35の係合穴38にねじ84を挿通
し、このねじ84をケース本体21の貫通穴33の内側に位置
するアース部材82のねじ穴83に螺入すれば、両者は一体
的に固定される。In this state, insert a screw 84 into the engagement hole 38 of the ground terminal fitting 35, and screw this screw 84 into the screw hole 83 of the ground member 82 located inside the through hole 33 of the case main body 21 It is fixed integrally.
このときの状態を第2図に示す。図から明らかなよう
に、ねじ84の頭部が係合穴38の傾斜面38bに圧接され、
アース部材82はねじ84を介してアース端子金具35に電気
的に確実に接続される。The state at this time is shown in FIG. As is clear from the figure, the head of the screw 84 is pressed against the inclined surface 38b of the engagement hole 38,
The ground member 82 is electrically and surely connected to the ground terminal fitting 35 via the screw 84.
(6)最後にカバー71の突片72を表示板65の貫通穴67に
挿入して他端を圧下すれば、係止片74が凸状の係止穴56
に係止し、カバー71はパネル41に結合される。(6) Finally, by inserting the protruding piece 72 of the cover 71 into the through hole 67 of the display plate 65 and pressing down the other end, the locking piece 74 has a convex locking hole 56.
The cover 71 is joined to the panel 41.
上記のように構成した入力部ユニットをベースボードに
実装するには、ケース本体21の底部に設けた係止部29を
ベースボートに設けた穴に係合させて当接し、放熱穴22
の下部に設けた穴26にねじを挿入して、ベースボースの
ねじ穴に螺入すればよい。To mount the input unit configured as described above on the base board, the engaging portion 29 provided on the bottom of the case body 21 is engaged with and abuts the hole provided on the base boat, and the heat dissipation hole 22
The screw may be inserted into the hole 26 provided in the lower part of the base and screwed into the screw hole of the base boss.
このとき、アース端子金具35に設けた接触子39,39aは、
第2図に示すようにマザーボードMに設けたアースパタ
ーン(図示せず)に接触し、プリント配線基板81、アー
ス部材83、ねじ84、係合穴38の傾斜面38b、アース端子
金具35、接触子39,39a、アースパターンからなるアース
回路が形成される。At this time, the contacts 39, 39a provided on the ground terminal fitting 35 are
As shown in FIG. 2, the printed wiring board 81, the ground member 83, the screw 84, the inclined surface 38b of the engaging hole 38, the ground terminal fitting 35, and the contact are made by contacting the ground pattern (not shown) provided on the motherboard M. An earth circuit including the children 39, 39a and an earth pattern is formed.
上記の説明では本考案をPCの入力部ユニットに実施した
場合について説明したが、同様にして出力部ユニット等
にも実施することができ、さらには他の電子機器にも実
施することができる。In the above description, the case where the present invention is applied to the input unit of the PC has been described. However, the present invention can be applied to the output unit and the like, and can also be applied to other electronic devices.
また、上記の実施例ではアース端子金具をケース本体の
背面の端部にかつ幅方向に設けた場合を示したが、内装
するプリント基盤の位置、形状に応じて適宜の位置に設
けることができる。Further, in the above embodiment, the case where the ground terminal fitting is provided in the end portion on the rear surface of the case body and in the width direction is shown, but it can be provided in an appropriate position depending on the position and shape of the printed board to be installed. .
さらに、ケース本体の背面に凹部を設け、この凹部にア
ース端子金具を嵌合した場合を示したが、凹部は省略し
てもよい。また、アース端子金具に縁部が内側に突出し
た2個の係合穴を設けた場合を示したが、縁部がケース
本体の貫通穴に嵌合する係合穴だけでもよく、接触子の
数も限定するものではない。Furthermore, although a case is shown in which a recess is provided on the back surface of the case body and the ground terminal fitting is fitted into this recess, the recess may be omitted. Further, although the case where the grounding terminal fitting is provided with two engaging holes with the edges protruding inward has been shown, the edge may be only the engaging holes that fit into the through holes of the case body. The number is not limited.
[考案の効果] 以上詳述したように、本考案に係る電子機器のアース構
造は、背面に所定の間隔で設けられた溝穴及びこの溝穴
間に設けられた貫通穴を有するケース本体と、ケース本
体の貫通穴に対応した位置に係合穴を有し、外面にマザ
ーボード等に接触する接触子が設けられた本体及びこの
本体の両端部に設けられケース本体の溝穴に挿入される
脚部からなるアース端子金具と、ケース本体内に挿入さ
れるプリンと配線基板に設けられたアース用の配線パタ
ーンに接続され、ケース本体の貫通穴の近傍に位置する
アース部材とからなり、ケース本体の溝穴にアース端子
金具の脚部を嵌入し、このアース端子金具の係合穴に挿
通したねじをケース本体に設けた貫通穴を介してアース
部材に設けたねじ穴に螺入するようにしたので、電子機
器をマザーボード等に取付ける際、マザーボード等に設
けたアース端子と電子機器のアース端子とをワンタッチ
で接続することができる。このため、アース端子を接続
する工数及びコストを大幅に低減することができる。[Advantages of the Invention] As described in detail above, the grounding structure of an electronic device according to the present invention includes a case body having slot holes provided at predetermined intervals on the back surface and through holes provided between the slot holes. , A main body having engaging holes at positions corresponding to the through holes of the case main body and provided with contacts on the outer surface for contacting the mother board and the like, and inserted into the slot holes of the main body of the case provided at both ends of the main body The case consists of a grounding terminal metal fitting consisting of legs, a pudding inserted into the case body, and a grounding member connected to the grounding wiring pattern provided on the wiring board and located near the through hole of the case body. Insert the leg of the ground terminal fitting into the groove of the main body, and screw the screw inserted into the engaging hole of the ground terminal fitting into the screw hole provided in the ground member through the through hole provided in the case body. Since it was an electronic device When the is attached to a motherboard or the like, the ground terminal provided on the motherboard or the like and the ground terminal of the electronic device can be connected with one touch. Therefore, the number of steps for connecting the ground terminal and the cost can be significantly reduced.
また、各部の電気的接続をすべて面接触で行うようにし
たので、電気的抵抗を安定させることができる。Further, since the electrical connection of each part is made by surface contact, the electrical resistance can be stabilized.
第1図は本考案実施例の分解斜視図、第2図はその組立
状態を示す断面図、第3図(a)は本考案の要部をなす
ケース本体の実施例の背面図、(b)はそのA−A断面
図、第4図(a)は同じく本考案の要部をなすアース端
子金具の断面図、(b)はその平面図、(c)は側面
図、第5図は本考案を実施した入力部ユニットの一例の
斜視図、第6図(a),(b)はその分解斜視図、第7
図は従来のプログラマブルコントローラの一例を示す斜
視図である。 21:ケース本体、30:凹部、32,32a:溝穴、33:貫通穴、3
4:凹所、35:アース端子金具、36:本体、37,37a:脚部、3
8,38a:係合穴、39,39a:探触子、81:プリント配線基板、
82:アース部材、84:ねじ。FIG. 1 is an exploded perspective view of an embodiment of the present invention, FIG. 2 is a sectional view showing its assembled state, FIG. 3 (a) is a rear view of an embodiment of a case body which is an essential part of the present invention, and (b). ) Is a sectional view taken along the line A-A, FIG. 4 (a) is a sectional view of the ground terminal fitting which is also an essential part of the present invention, (b) is its plan view, (c) is a side view, and FIG. 5 is A perspective view of an example of an input unit embodying the present invention, FIGS. 6 (a) and 6 (b) are exploded perspective views thereof, and FIG.
The figure is a perspective view showing an example of a conventional programmable controller. 21: Case body, 30: Recess, 32, 32a: Groove hole, 33: Through hole, 3
4: Recess, 35: Ground terminal fitting, 36: Main body, 37, 37a: Leg part, 3
8,38a: Engagement hole, 39, 39a: Probe, 81: Printed wiring board,
82: grounding member, 84: screw.
Claims (1)
の溝穴間に設けられた貫通穴を有するケース本体と、 該ケース本体の貫通穴に対応した位置に係合穴を有し、
外面にマザーボード等に接触する接触子が設けられた本
体及び該本体の両端部に設けられ前記ケース本体の溝穴
に挿入される脚部からなるアース端子金具と、 前記ケース本体内に挿入されるプリント配線基板に設け
られたアース用の配線パターンに接続され、前記ケース
本体の貫通穴の近傍に位置するアース部材とからなり、 前記ケース本体の溝穴にアース端子金具の脚部を嵌入
し、該アース端子金具の係合穴に挿通したねじを前記ケ
ース本体に設けた貫通穴を介して前記アース部材に設け
たねじ穴に螺入したことを特徴とする電子機器のアース
構造。1. A case main body having slot holes provided at predetermined intervals on the back surface and through holes provided between the slot holes, and engaging holes at positions corresponding to the through holes of the case main body. ,
A main body having a contactor for contacting a mother board or the like on the outer surface, and ground terminal fittings made of legs provided at both ends of the main body and inserted into the slot holes of the case main body, and inserted into the case main body Connected to a wiring pattern for grounding provided on a printed wiring board, consisting of a grounding member located in the vicinity of the through hole of the case body, and fitting the leg portion of the ground terminal fitting into the slot hole of the case body, A ground structure for an electronic device, wherein a screw inserted into an engaging hole of the ground terminal fitting is screwed into a screw hole provided in the ground member through a through hole provided in the case body.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1988141212U JPH0731507Y2 (en) | 1988-10-31 | 1988-10-31 | Grounding structure of electronic equipment |
US07/413,878 US4991056A (en) | 1988-09-29 | 1989-09-28 | Case for electronic units |
KR2019890014248U KR940003140Y1 (en) | 1988-09-29 | 1989-09-29 | Box using electronics |
KR2019890020447U KR940008441Y1 (en) | 1988-10-31 | 1989-12-29 | Around structure for electronics units |
GB9008224A GB2243024B (en) | 1988-09-29 | 1990-04-11 | Case for electronic units |
HK112394A HK112394A (en) | 1988-09-29 | 1994-10-20 | Case for electronic units |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1988141212U JPH0731507Y2 (en) | 1988-10-31 | 1988-10-31 | Grounding structure of electronic equipment |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0262667U JPH0262667U (en) | 1990-05-10 |
JPH0731507Y2 true JPH0731507Y2 (en) | 1995-07-19 |
Family
ID=31406085
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1988141212U Expired - Lifetime JPH0731507Y2 (en) | 1988-09-29 | 1988-10-31 | Grounding structure of electronic equipment |
Country Status (2)
Country | Link |
---|---|
JP (1) | JPH0731507Y2 (en) |
KR (1) | KR940008441Y1 (en) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS571415Y2 (en) * | 1977-02-16 | 1982-01-09 | ||
JPS58168821U (en) * | 1982-04-30 | 1983-11-10 | 株式会社稲葉製作所 | Grounding device for wiring paths in partitions |
JPS62201466U (en) * | 1986-06-12 | 1987-12-22 |
-
1988
- 1988-10-31 JP JP1988141212U patent/JPH0731507Y2/en not_active Expired - Lifetime
-
1989
- 1989-12-29 KR KR2019890020447U patent/KR940008441Y1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
KR900009134U (en) | 1990-05-04 |
JPH0262667U (en) | 1990-05-10 |
KR940008441Y1 (en) | 1994-12-19 |
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