JP3852519B2 - Unit type electronic equipment - Google Patents

Unit type electronic equipment Download PDF

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Publication number
JP3852519B2
JP3852519B2 JP15783198A JP15783198A JP3852519B2 JP 3852519 B2 JP3852519 B2 JP 3852519B2 JP 15783198 A JP15783198 A JP 15783198A JP 15783198 A JP15783198 A JP 15783198A JP 3852519 B2 JP3852519 B2 JP 3852519B2
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unit
base board
fixing
main body
locking
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JP15783198A
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JPH11354944A (en
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栄一 上松
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Panasonic Electric Works Co Ltd
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Matsushita Electric Works Ltd
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【0001】
【発明の属する技術分野】
本発明は、各々が異なる機能を有する複数種の機能ユニットと、複数の機能ユニットが着脱自在に装着されるベースボードとを備えて成るユニット型電子機器に関するものである。
【0002】
【従来の技術】
従来、各々が異なる機能を有する複数種の機能ユニットと、複数の機能ユニットが着脱自在に装着されるベースボードとを備えて成るユニット型電子機器として、例えば所謂ビルディングブロックタイプのプログラマブルコントローラがある。
【0003】
図10はベースボード2’及びそれに装着される複数種の機能ユニット(電源供給用の電源ユニット1a’、入出力の処理や各種の演算処理を行うCPUユニット1b’、入出力用の入出力ユニット(I/Oユニット)1c’…など)で構成される従来周知のプログラマブルコントローラのシステム構成例を示す図である。
【0004】
図10並びに図11に示すように電源ユニット1a’、CPUユニット1b’、I/Oユニット1c’…はベースボード2’が有する複数のスロット2a’にそれぞれ装着されるとともに、各スロット2a’毎に設けられたコネクタ2b’…に接続される受け側コネクタを有している。このようにCPUユニット1b’が装着されるベースボード2’を基本ベースボードと呼ぶ。これに対して増設ケーブルによってベースボード2’に設けた増設コネクタ2c’に接続され、I/Oユニット1c’…などを増設するために用いられる増設ベースボードもある。このような増設ベースボードには基本的に電源ユニット1a’やI/Oユニット1c’…などが装着されるのみでCPUユニット1b’は装着されない。
【0005】
ベースボード2’の内部においては、電源ユニット1a’が接続される電源コネクタ2b1'とCPUユニット1b’が接続されるCPUコネクタ2b2'及びI/Oユニット1c’…などが接続される複数のI/Oコネクタ2b3'…並びに増設コネクタ2c’との間が電力供給用の電源線(図示せず)で接続されるとともに、CPUコネクタ2b2'、I/Oコネクタ2b3' …及び増設コネクタ2c’の間に信号伝送用のアドレスバス並びにデータバス(図示せず)が設けられる。
【0006】
またCPUユニット1b’からはベースボード2’のスロット2a’…に装着されたI/Oユニット1c’…などを選択する選択信号が出力され、これらの信号がCPUコネクタ2b2'を介してベースボード2’が具備するセレクト回路(図示せず)に入力される。セレクト回路では選択信号により選択されたI/Oユニット1c’…が接続されているI/Oコネクタ2b3' …にスロットセレクト信号を出力する。而して、I/Oコネクタ2b3' …を介してスロットセレクト信号を受けたI/Oユニット1c’…とCPUユニット1b’との間で、アドレスバス及びデータバスを通してデータの入出力が行われる。
【0007】
複数のスロット2a’…はベースボード2’の表面に列設されており、図10(a)に示すように各スロット2a’…に装着された状態では電源ユニット1a’、CPUユニット1b’並びにI/Oユニット1c’…が隣接して配置されるようになっている。なお、図11(b)に示すようにベースボード2’の背面略中央にはDINレールに取り付けるための取付溝部2d’が長手方向に沿って設けてある。
【0008】
ところで各ユニットのユニット本体10’はほぼ共通の寸法並びに形状に形成されている。図12はI/Oユニット1c’の外観を示す図であり、ユニット本体10’の背面上部には断面形状略L形の引掛片11’が突設されている。この引掛片11’は、ベースボード2’の上端部に各スロット2a’毎に設けられた引掛孔2f’に引掛けられるものである。また、ユニット本体10’の下側底面には、図12(b)、(c)に示すようにユニット本体10’の前面側から背面側に向けて上方に傾斜する斜面を有する凹部12’が設けてあり、この凹部12’の背面側の壁面に固定ねじ13が挿通されるねじ挿通孔(図示せず)が形成してある。
【0009】
而して、引掛片11’をベースボード2’の引掛孔2f’に引掛けて凹部12’のねじ挿通孔に挿通された固定ねじ13を、ベースボード2’の下端部に各スロット2a’毎に設けられたねじ孔2g’に螺合させて締め付けることでスロット2a’に装着された状態のユニット本体10’をベースボード2’に固定することができるのである。
【0010】
【発明が解決しようとする課題】
しかしながら上記従来例では、固定ねじ13の締め付け作業は各ユニットの前面側から行われるが、固定ねじ13がユニット本体10’の背面に近い位置に配置されているために作業性がわるく、作業時間もかかってしまうという問題があった。
【0011】
本発明は上記問題点の解決を目的とするものであり、機能ユニットをベースボードに簡単に装着並びに取外すことができて作業性の向上と作業時間の短縮が図れるユニット型電子機器を提供しようとするものである。
【0012】
【課題を解決するための手段】
請求項1の発明は、上記目的を達成するために、互いに同一又は異なる機能を有する複数種の機能ユニットと、複数の機能ユニットが着脱自在に装着されるベースボードと、各機能ユニット本体の複数箇所に設けられベースボードに機能ユニット本体を係止固定する固定手段と、ベースボードに設けられたねじ孔に適宜螺合させられる固定ねじとを備えて成るユニット型電子機器において、ベースボードに設けられた被係止部に係脱自在に係止する係止片を有する前記固定手段が機能ユニット本体の長手方向両端にそれぞれ設けられ、少なくとも何れか一方の前記固定手段は、機能ユニット本体に対して移動自在に取り付けられた主部と、この主部に突設された前記係止片と、当該係止片を前記被係止部との係止方向に弾性付勢する弾性体とを具備し、前記固定ねじが挿通される挿通孔が前記主部の略中央に設けられ、この挿通孔を囲むように前記係止片及び弾性体が配設されて成ることを特徴とし、複数箇所に設けた固定手段だけで機能ユニットをベースボードに装着し且つ固定することができるために従来のような固定ねじを使わずに済み、機能ユニットをベースボードに簡単に装着並びに取外すことができて作業性の向上と作業時間の短縮が図れる。しかも、ベースボードに対して機能ユニットを所謂ワンタッチで装着することができるとともに弾性体の弾発力に抗して主部を反係止方向に移動させることで係止片と被係止部との係止を外して機能ユニットをベースボードから簡単に取外すことができ、さらに、固定ねじの配設スペースが少なくて済み、機能ユニットの小型化が図れる。
【0017】
【発明の実施の形態】
以下、本発明を従来例と同様のプログラマブルコントローラに適用した実施形態を図1〜図9を参照して詳細に説明する。なお、本実施形態の基本的な構成は従来例と共通するので、従来例と共通する部分については「’」を除いた同一の符号を付して説明を省略する。また、本発明はプログラマブルコントローラに限定する主旨ではなく、互いに同一又は異なる機能を有する複数種の機能ユニットと、複数の機能ユニットが着脱自在に装着されるベースボードとを備えて成るユニット型電子機器全般に本発明の技術的思想が適用可能である。
【0018】
本実施形態は、図1〜図3に示すように機能ユニット(電源ユニット1a、CPUユニット1b、I/Oユニット1cなど)のユニット本体10の背面側下部に固定具20を設けるとともに、この固定具20が具備する一対の係止片22,22が係脱自在に係止する被係止部たる係止孔2hを各スロット2aに対応してベースボード2の下側底面に各一対ずつ設けてある点に特徴がある。
【0019】
固定具20は図4に示すように断面形状略L形の板状に形成された主部21の一端両側に、断面形状略三角形の一対の係止片22,22が突設され、主部21の略中央には長孔形の固定ねじ挿通孔23が設けてある。この固定ねじ挿通孔23の周縁には台部24が突設され、さらに台部24の固定ねじ挿通孔23と反対側には係止片22,22と同じ側に矩形状の段部25,25が突設されている。
【0020】
固定ばね30は、図5に示すように係止片22,22を有する固定具20をベースボード2の係止孔2h,2hとの係止方向に弾性付勢する弾性体に相当し、略矩形の主片31と、主片31の一端側からハ字形に拡径された一対の脚片32,32とが細い棒状の弾性部材を折曲して一体形成されたコイルばねから成る。
【0021】
一方、ユニット本体10の凹部12背面側の壁部分には、図6に示すように固定具20が取り付けられる取付凹所3と、この取付凹所3の両内側面に凹設されて下端側が開口するスライド溝4,4と、後述するようにユニット本体10の凹部12と連通して固定ねじ13が挿通される挿通孔5と、取付凹所3に連通し固定ばね30の両脚片32,32が挿入係止される係止凹部6とが設けてある。
【0022】
而して、固定具20の主部21両端縁をスライド溝4,4の開口側からスライド溝4,4内にそれぞれ挿入することで固定具20がユニット本体10の取付凹所3にスライド溝4,4に沿ってスライド移動自在に取り付けられる。そして、図7及び図8に示すように主片31の脚片32,32と対向する部位を固定具30の一端側から突設された係止突起26に係止するとともに、両脚片32,32を固定具30の係止凹部6に挿入係止することにより、固定ばね30が撓められた状態で固定具30に取り付けられる。すなわち、この固定ばね30によって固定具20がユニット本体10の取付凹所3内に退く方向(固定具20の係止片22がユニット本体10の係止孔2h ,2h に係止する方向)に弾性付勢される。なお、ユニット本体10の取付凹所3の両側には、図6及び図7に示すように略円柱状の突起15,15が突設されている。
【0023】
ところで、図6及び図8に示すようにユニット本体10に取り付けた状態で固定具20の固定ねじ挿通孔23にはユニット本体10の凹部12側から固定ねじ13の先端部分が挿通され、固定ねじ13の胴部に固定ねじ挿通孔23の内側面が当接して固定具20のユニット本体10側への移動が規制されている。なお、固定ねじ13の胴部にはコイルばね14が外挿され、コイルばね14の一端が凹部12の壁部に当接させてある。
【0024】
一方、ベースボード2の下側底面には図9に示すように各スロット2aに対応する範囲毎に一対の係止孔2h,2hが凹設されている。また、ベースボード2の下端部には各スロット2a毎に固定ねじ13用のねじ孔2gが設けられている。また、各ねじ孔2gの両側には、ユニット本体10の突起15,15が嵌入される嵌入孔2i,2iが設けてある。
【0025】
上述のように構成される機能ユニットは以下のようにしてベースボード2に装着される。まずユニット本体10の背面上部に突設されている引掛片11をベースボード2の引掛孔2fに引掛け、ユニット本体10の下部をベースボード2に対して押しつけるようにすれば、ユニット本体10の背面よりも突出している固定具20の係止片22,22がベースボード2の下端に当接して固定ばね30のばね力に抗して固定具30がユニット本体10の取付凹所3から進出する向きに移動する。そのままユニット本体10を押しつけていけば、やがて係止片22,22が係止孔2h,2hの位置まで達し、固定ばね30のばね力によって固定具20がユニット本体10の取付凹所3内に退く向きに移動する。その結果、固定具20の係止片22,22がベースボード2の係止孔2h,2hに係止してユニット本体10がベースボード2に係止固定される。このとき、ユニット本体10の背面に突設されている一対の突起15,15がベースボード2の嵌入孔2i,2iに嵌入されることにより、ベースボード2のスロット2aに対するユニット本体10の位置決めと、装着後のベースボード2に対するユニット本体10のがたつきとを防止している。
【0026】
このように引掛片11と固定具20の係止片22,22とで機能ユニットのユニット本体10がベースボード2に係止固定されるため、固定ねじ13を使わずにベースボード2の各スロット2aに機能ユニットをワンタッチで装着し且つ固定することができて、作業性の向上と作業時間の短縮が図れる。また機能ユニットをベースボード2から取外す場合には、先に固定具20をユニット本体10の取付凹所3から進出する向きに移動させることで係止片22,22と係止孔2h,2hとの係止を外し、次に引掛片11を引掛孔2fから外すことでベースボード2から機能ユニットを簡単に取外すことができる。
【0027】
ところで、本実施形態のプログラマブルコントローラは工場などにおいて振動や衝撃が加わるような厳しい環境下で使用される場合があり、そのような場合には適宜固定ねじ13をベースボード2の下端部に各スロット2a毎に設けられたねじ孔2gに螺合させて締め付けることでユニット本体10をベースボード2に強固に固定することができる。その結果、使用中に振動や衝撃によってベースボード2からユニット本体10が脱落するような事故を未然に防ぎ、信頼性を高めることができるものである。なお、固定ねじ13は固定具20に設けられた固定ねじ挿通孔23に挿通され、固定具20並びに固定ばね30が固定ねじ13(固定ねじ挿通孔23)を囲むように係止片22,22及び固定ばね30を配設しているので、固定ねじ13の配設スペースが少なくて済み、機能ユニットの小型化が図れるという利点がある。
【0028】
【発明の効果】
請求項1の発明は、互いに同一又は異なる機能を有する複数種の機能ユニットと、複数の機能ユニットが着脱自在に装着されるベースボードと、各機能ユニット本体の複数箇所に設けられベースボードに機能ユニット本体を係止固定する固定手段と、ベースボードに設けられたねじ孔に適宜螺合させられる固定ねじとを備えて成るユニット型電子機器において、ベースボードに設けられた被係止部に係脱自在に係止する係止片を有する前記固定手段が機能ユニット本体の長手方向両端にそれぞれ設けられ、少なくとも何れか一方の前記固定手段は、機能ユニット本体に対して移動自在に取り付けられた主部と、この主部に突設された前記係止片と、当該係止片を前記被係止部との係止方向に弾性付勢する弾性体とを具備し、前記固定ねじが挿通される挿通孔が前記主部の略中央に設けられ、この挿通孔を囲むように前記係止片及び弾性体が配設されて成るので、複数箇所に設けた固定手段だけで機能ユニットをベースボードに装着し且つ固定することができるために従来のような固定ねじを使わずに済み、機能ユニットをベースボードに簡単に装着並びに取外すことができて作業性の向上と作業時間の短縮が図れ、しかも、ベースボードに対して機能ユニットを所謂ワンタッチで装着することができるとともに弾性体の弾発力に抗して主部を反係止方向に移動させることで係止片と被係止部との係止を外して機能ユニットをベースボードから簡単に取外すことができ、さらに、固定ねじの配設スペースが少なくて済み、機能ユニットの小型化が図れるという効果がある。
【図面の簡単な説明】
【図1】実施形態を示し、(a)は正面図、(b)は側面図、(c)は下面図である。
【図2】同上における機能ユニット(I/Oユニット)を示し、(a)は正面図、(b)は側面図、(c)は下面図である。
【図3】同上におけるベースボードを示し、(a)は正面図、(b)は側面図、(c)は下面図である。
【図4】同上における固定具を示し、(a)は正面図、(b)は側面図、(c)は下面図である。
【図5】同上における固定ばねを示し、(a)は正面図、(b)は側面図である。
【図6】同上における一部省略した機能ユニットの要部分解断面図である。
【図7】同上における一部省略した機能ユニットの要部正面図である。
【図8】同上における一部省略した要部分解断面図である。
【図9】同上における一部省略した要部分解断面図である。
【図10】従来例を示し、(a)は正面図、(b)は側面図、(c)は下面図である。
【図11】同上におけるベースボードを示し、(a)は正面図、(b)は側面図、(c)は下面図である。
【図12】同上における機能ユニット(I/Oユニット)を示し、(a)は正面図、(b)は側面図、(c)は下面図である。
【符号の説明】
1a 電源ユニット
1b CPUユニット
1c I/Oユニット
2 ベースボード
2f 引掛孔
2h 係止孔
11 引掛片
20 固定具
22 係止片
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a unit type electronic apparatus including a plurality of types of functional units each having a different function and a base board on which the plurality of functional units are detachably mounted.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, there is a so-called building block type programmable controller, for example, as a unit-type electronic device including a plurality of types of functional units each having a different function and a base board to which a plurality of functional units are detachably mounted.
[0003]
FIG. 10 shows a base board 2 ′ and a plurality of types of functional units (power supply unit 1a ′ for power supply, CPU unit 1b ′ for performing input / output processing and various arithmetic processes, input / output unit for input / output) It is a figure which shows the system structural example of the conventionally well-known programmable controller comprised by (I / O unit) 1c '... etc.).
[0004]
As shown in FIGS. 10 and 11, the power supply unit 1a ′, the CPU unit 1b ′, the I / O unit 1c ′,... Are mounted in the plurality of slots 2a ′ of the base board 2 ′, and each slot 2a ′. Are provided with connectors on the receiving side connected to the connectors 2b '. The base board 2 ′ to which the CPU unit 1b ′ is mounted is called a basic base board. On the other hand, there is also an extension base board that is connected to an extension connector 2c ′ provided on the base board 2 ′ by an extension cable and used to add an I / O unit 1c ′. Basically, the power supply unit 1a ′, the I / O unit 1c ′, etc. are mounted on such an extension base board, but the CPU unit 1b ′ is not mounted.
[0005]
Inside the base board 2 ′, a power connector 2b 1 ′ to which the power unit 1a ′ is connected, a CPU connector 2b 2 ′ to which the CPU unit 1b ′ is connected, an I / O unit 1c ′, etc. are connected. Are connected to the I / O connector 2b 3 '... and the extension connector 2c' by a power supply power line (not shown), and the CPU connector 2b 2 ', the I / O connector 2b 3 ' ... An address bus and a data bus (not shown) for signal transmission are provided between the extension connectors 2c ′.
[0006]
Further, the CPU unit 1b ′ outputs a selection signal for selecting the I / O unit 1c ′... Mounted in the slot 2a ′... Of the base board 2 ′, and these signals are transmitted to the base via the CPU connector 2b 2 ′. The signal is input to a select circuit (not shown) included in the board 2 ′. The select circuit outputs a slot select signal to the I / O connectors 2b 3 ′ connected to the I / O units 1c ′ selected by the selection signal. Thus, data is input / output between the I / O unit 1c ′, which has received the slot select signal via the I / O connector 2b 3 ′, and the CPU unit 1b ′ through the address bus and the data bus. Is called.
[0007]
The plurality of slots 2a 'are arranged on the surface of the base board 2'. When the slots 2a 'are mounted in the slots 2a' as shown in FIG. 10A, the power supply unit 1a ', the CPU unit 1b', I / O units 1c 'are arranged adjacent to each other. As shown in FIG. 11B, an attachment groove 2d ′ for attachment to the DIN rail is provided along the longitudinal direction at the approximate center of the back surface of the base board 2 ′.
[0008]
By the way, the unit main body 10 'of each unit is formed to have almost the same size and shape. FIG. 12 is a diagram showing the external appearance of the I / O unit 1c ′, and a hooking piece 11 ′ having a substantially L-shaped cross section projects from a rear upper part of the unit body 10 ′. The hooking piece 11 ′ is hooked to a hooking hole 2f ′ provided for each slot 2a ′ at the upper end of the base board 2 ′. Further, as shown in FIGS. 12B and 12C, a concave portion 12 ′ having a slope inclined upward from the front side to the back side of the unit body 10 ′ is formed on the lower bottom surface of the unit body 10 ′. A screw insertion hole (not shown) through which the fixing screw 13 is inserted is formed in the wall surface on the back side of the recess 12 ′.
[0009]
Thus, the fixing screws 13 that are hooked on the hooking holes 2f ′ of the base board 2 ′ by inserting the hooking pieces 11 ′ into the screw insertion holes of the recesses 12 ′ are inserted into the slots 2a ′ at the lower end of the base board 2 ′. The unit main body 10 ′ mounted in the slot 2a ′ can be fixed to the base board 2 ′ by being screwed into and tightened into the screw holes 2g ′ provided every time.
[0010]
[Problems to be solved by the invention]
However, in the above conventional example, the fastening operation of the fixing screw 13 is performed from the front side of each unit. However, since the fixing screw 13 is disposed at a position close to the back surface of the unit main body 10 ', workability is poor, and work time is reduced. There was a problem that it also took.
[0011]
SUMMARY OF THE INVENTION The present invention aims to solve the above-described problems, and aims to provide a unit type electronic device that can easily attach and detach a functional unit to / from a base board to improve workability and shorten work time. To do.
[0012]
[Means for Solving the Problems]
In order to achieve the above object, a first aspect of the present invention provides a plurality of types of functional units having the same or different functions, a base board on which the plurality of functional units are detachably mounted, and a plurality of functional unit bodies. In a unit-type electronic device comprising a fixing means for locking and fixing a functional unit main body to a base board provided at a location, and a fixing screw that is appropriately screwed into a screw hole provided in the base board. The fixing means having locking pieces that are detachably locked to the locked portions are provided at both longitudinal ends of the functional unit main body, and at least one of the fixing means is attached to the functional unit main body. A main part movably attached to the main part, the locking piece protruding from the main part, and an elastic body that elastically urges the locking piece in a locking direction with the locked part. Comprising an insertion hole into which the fixing screw is inserted is provided substantially at the center of the main portion, characterized in that the latching pieces and the elastic body so as to surround the insertion hole is made are disposed, a plurality of locations Since the functional unit can be mounted and fixed to the base board only by the fixing means provided in the above, it is not necessary to use a conventional fixing screw, and the functional unit can be easily mounted and removed from the base board. The workability can be improved and the working time can be shortened. In addition, the functional unit can be mounted on the base board with a so-called one-touch, and the main part is moved in the anti-locking direction against the elastic force of the elastic body, so that the locking piece and the locked part are The functional unit can be easily removed from the base board by releasing the lock, and further, the installation space for the fixing screw can be reduced, and the functional unit can be miniaturized.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment in which the present invention is applied to a programmable controller similar to a conventional example will be described in detail with reference to FIGS. Since the basic configuration of this embodiment is the same as that of the conventional example, portions common to the conventional example are denoted by the same reference numerals excluding “′”, and description thereof is omitted. Further, the present invention is not intended to be limited to a programmable controller, and is a unit-type electronic device comprising a plurality of types of functional units having the same or different functions, and a base board on which the plurality of functional units are detachably mounted. In general, the technical idea of the present invention is applicable.
[0018]
In this embodiment, as shown in FIGS. 1 to 3, a fixing tool 20 is provided at the lower part on the back side of the unit body 10 of the functional unit (power supply unit 1 a, CPU unit 1 b, I / O unit 1 c, etc.), and this fixing is performed. A pair of locking holes 2h, which are locked portions, in which the pair of locking pieces 22, 22 included in the tool 20 are detachably locked are provided on the lower bottom surface of the base board 2 corresponding to the slots 2a. There is a feature in the point.
[0019]
As shown in FIG. 4, the fixture 20 has a pair of locking pieces 22, 22 each having a substantially triangular cross-section projecting from both ends of a main portion 21 formed in a plate shape having a substantially L-shaped cross section. In the approximate center of 21, a long hole-shaped fixing screw insertion hole 23 is provided. A base portion 24 protrudes from the periphery of the fixing screw insertion hole 23, and a rectangular step portion 25 on the same side as the locking pieces 22, 22 on the side opposite to the fixing screw insertion hole 23 of the base portion 24, 25 is protrudingly provided.
[0020]
As shown in FIG. 5, the fixing spring 30 corresponds to an elastic body that elastically urges the fixing tool 20 having the locking pieces 22 and 22 in the locking direction with the locking holes 2 h and 2 h of the base board 2. A rectangular main piece 31 and a pair of leg pieces 32, 32 having an enlarged C shape from one end side of the main piece 31 are formed of a coil spring integrally formed by bending a thin rod-shaped elastic member.
[0021]
On the other hand, on the wall portion on the back side of the recess 12 of the unit main body 10, as shown in FIG. 6, a mounting recess 3 to which the fixing tool 20 is attached and a lower end side are provided on both inner side surfaces of the mounting recess 3. The slide grooves 4 and 4 that are open, the insertion hole 5 that communicates with the recess 12 of the unit main body 10 as will be described later, and the leg pieces 32 of the fixing spring 30 that communicate with the mounting recess 3. A locking recess 6 into which 32 is inserted and locked is provided.
[0022]
Thus, the both ends of the main portion 21 of the fixture 20 are inserted into the slide grooves 4 and 4 from the opening side of the slide grooves 4 and 4, respectively, so that the fixture 20 slides into the mounting recess 3 of the unit body 10. 4 and 4 are slidably mounted along. 7 and 8, the portion of the main piece 31 facing the leg pieces 32, 32 is locked to the locking projection 26 projecting from one end of the fixture 30, and both the leg pieces 32, By inserting and locking 32 into the locking recess 6 of the fixing tool 30, the fixing spring 30 is attached to the fixing tool 30 in a bent state. That is, in the direction in which the fixing tool 20 is retracted into the mounting recess 3 of the unit main body 10 by the fixing spring 30 (the direction in which the locking piece 22 of the fixing tool 20 is locked to the locking holes 2h and 2h of the unit main body 10). Elastically biased. As shown in FIGS. 6 and 7, substantially cylindrical projections 15, 15 are provided on both sides of the mounting recess 3 of the unit body 10.
[0023]
By the way, as shown in FIGS. 6 and 8, the tip of the fixing screw 13 is inserted into the fixing screw insertion hole 23 of the fixture 20 from the concave portion 12 side in the state of being attached to the unit main body 10. The inner surface of the fixing screw insertion hole 23 abuts on the body portion 13, and the movement of the fixture 20 toward the unit body 10 is restricted. A coil spring 14 is extrapolated to the body portion of the fixing screw 13, and one end of the coil spring 14 is brought into contact with the wall portion of the recess 12.
[0024]
On the other hand, as shown in FIG. 9, a pair of locking holes 2h and 2h are recessed in the lower bottom surface of the base board 2 for each range corresponding to each slot 2a. Further, a screw hole 2g for the fixing screw 13 is provided at the lower end of the base board 2 for each slot 2a. Further, on both sides of each screw hole 2g, fitting holes 2i and 2i into which the projections 15 and 15 of the unit main body 10 are fitted are provided.
[0025]
The functional unit configured as described above is mounted on the base board 2 as follows. First, if the hooking piece 11 protruding from the upper back of the unit body 10 is hooked in the hooking hole 2f of the base board 2 and the lower part of the unit body 10 is pressed against the base board 2, the unit body 10 The locking pieces 22 and 22 of the fixing tool 20 protruding from the back face abut the lower end of the base board 2 and the fixing tool 30 advances from the mounting recess 3 of the unit body 10 against the spring force of the fixing spring 30. Move in the direction you want. If the unit main body 10 is pressed as it is, the locking pieces 22 and 22 will eventually reach the positions of the locking holes 2h and 2h, and the fixing tool 20 is moved into the mounting recess 3 of the unit main body 10 by the spring force of the fixing spring 30. Move backwards. As a result, the locking pieces 22 and 22 of the fixture 20 are locked in the locking holes 2 h and 2 h of the base board 2, and the unit main body 10 is locked and fixed to the base board 2. At this time, the pair of protrusions 15, 15 protruding from the back surface of the unit body 10 are inserted into the insertion holes 2 i, 2 i of the base board 2, thereby positioning the unit body 10 with respect to the slots 2 a of the base board 2. This prevents the unit body 10 from rattling with respect to the base board 2 after being mounted.
[0026]
In this way, the unit main body 10 of the functional unit is locked and fixed to the base board 2 by the hooking piece 11 and the locking pieces 22 and 22 of the fixing tool 20, so that each slot of the base board 2 is used without using the fixing screw 13. The functional unit can be mounted and fixed to 2a with one touch, so that the workability can be improved and the working time can be shortened. When the functional unit is removed from the base board 2, the locking piece 22, 22 and the locking holes 2h, 2h are moved by moving the fixture 20 in the direction of advancement from the mounting recess 3 of the unit body 10 first. The functional unit can be easily removed from the base board 2 by releasing the lock and then removing the hooking piece 11 from the hooking hole 2f.
[0027]
By the way, the programmable controller of this embodiment may be used in a severe environment where vibration or impact is applied in a factory or the like. In such a case, the fixing screw 13 is appropriately inserted into each slot at the lower end of the base board 2. The unit main body 10 can be firmly fixed to the base board 2 by being screwed into the screw holes 2g provided for each 2a and tightened. As a result, it is possible to prevent an accident that the unit main body 10 is dropped from the base board 2 due to vibration or impact during use, and to improve reliability. The fixing screw 13 is inserted into a fixing screw insertion hole 23 provided in the fixing tool 20, and the locking pieces 22, 22 are arranged so that the fixing tool 20 and the fixing spring 30 surround the fixing screw 13 (fixing screw insertion hole 23). Since the fixing spring 30 is disposed, the space for disposing the fixing screw 13 is small, and there is an advantage that the functional unit can be reduced in size.
[0028]
【The invention's effect】
According to the first aspect of the present invention, there are provided a plurality of types of functional units having the same or different functions, a base board on which the plurality of functional units are detachably mounted , and functions on the base board provided at a plurality of locations of each functional unit main body. In a unit- type electronic apparatus comprising a fixing means for locking and fixing a unit main body and a fixing screw that is appropriately screwed into a screw hole provided in the base board, the unit body is engaged with a locked portion provided in the base board. The fixing means having locking pieces that are detachably locked are respectively provided at both longitudinal ends of the functional unit main body, and at least one of the fixing means is movably attached to the functional unit main body. And an elastic body that elastically urges the locking piece in the locking direction with the locked portion, and the fixing screw is inserted. Insertion hole is provided substantially at the center of the main portion which is the base since the engaging piece and the elastic body so as to surround the insertion hole is made are disposed, the only functional unit fixing means provided at a plurality of locations Since it can be mounted and fixed to the board, it is not necessary to use conventional fixing screws, and the functional unit can be easily mounted and removed from the base board, improving workability and shortening the work time. In addition, the functional unit can be mounted on the base board with a so-called one-touch, and the main part is moved in the anti-locking direction against the elastic force of the elastic body, so that the locking piece and the locked part And the functional unit can be easily removed from the base board. Further, the space for fixing screws can be reduced, and the functional unit can be reduced in size .
[Brief description of the drawings]
FIG. 1 shows an embodiment, where (a) is a front view, (b) is a side view, and (c) is a bottom view.
FIG. 2 shows functional units (I / O units) in the same as above, (a) is a front view, (b) is a side view, and (c) is a bottom view.
3A and 3B show the base board of the above, wherein FIG. 3A is a front view, FIG. 3B is a side view, and FIG. 3C is a bottom view.
4A and 4B show the fixture according to the above, wherein FIG. 4A is a front view, FIG. 4B is a side view, and FIG. 4C is a bottom view.
5A and 5B show the fixing spring of the above, wherein FIG. 5A is a front view and FIG. 5B is a side view.
FIG. 6 is an exploded cross-sectional view of a main part of the functional unit partially omitted in the above.
FIG. 7 is a front view of a principal part of the functional unit partially omitted in the above.
FIG. 8 is an exploded cross-sectional view of a main part, partially omitted, same as above.
FIG. 9 is an exploded cross-sectional view of the main part, partially omitted, same as above.
FIG. 10 shows a conventional example, (a) is a front view, (b) is a side view, and (c) is a bottom view.
11A and 11B show the base board of the above, wherein FIG. 11A is a front view, FIG. 11B is a side view, and FIG. 11C is a bottom view.
FIG. 12 shows the functional unit (I / O unit) in the same as above, (a) is a front view, (b) is a side view, and (c) is a bottom view.
[Explanation of symbols]
1a Power supply unit 1b CPU unit 1c I / O unit 2 Base board 2f Hooking hole 2h Locking hole 11 Hooking piece 20 Fixing tool 22 Locking piece

Claims (1)

互いに同一又は異なる機能を有する複数種の機能ユニットと、複数の機能ユニットが着脱自在に装着されるベースボードと、各機能ユニット本体の複数箇所に設けられベースボードに機能ユニット本体を係止固定する固定手段と、ベースボードに設けられたねじ孔に適宜螺合させられる固定ねじとを備えて成るユニット型電子機器において、ベースボードに設けられた被係止部に係脱自在に係止する係止片を有する前記固定手段が機能ユニット本体の長手方向両端にそれぞれ設けられ、少なくとも何れか一方の前記固定手段は、機能ユニット本体に対して移動自在に取り付けられた主部と、この主部に突設された前記係止片と、当該係止片を前記被係止部との係止方向に弾性付勢する弾性体とを具備し、前記固定ねじが挿通される挿通孔が前記主部の略中央に設けられ、この挿通孔を囲むように前記係止片及び弾性体が配設されて成ることを特徴とするユニット型電子機器 A plurality of types of functional units having the same or different functions, a base board to which a plurality of functional units are detachably mounted, and a functional unit main body locked and fixed to the base board at a plurality of locations of each functional unit main body In a unit-type electronic device comprising a fixing means and a fixing screw that is appropriately screwed into a screw hole provided in the base board, a latch that is detachably locked to a locked portion provided in the base board. The fixing means having stop pieces are respectively provided at both ends in the longitudinal direction of the functional unit main body, and at least one of the fixing means is attached to the main unit movably with respect to the functional unit main body. The locking piece provided in a protruding manner and an elastic body that elastically biases the locking piece in the locking direction with the locked portion, and the insertion hole through which the fixing screw is inserted is provided in front. It provided substantially at the center of the main portion, unit type electronic apparatus, characterized in that the latching pieces and the elastic body so as to surround the insertion hole is formed by arranged.
JP15783198A 1998-06-05 1998-06-05 Unit type electronic equipment Expired - Lifetime JP3852519B2 (en)

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JP15783198A JP3852519B2 (en) 1998-06-05 1998-06-05 Unit type electronic equipment

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Application Number Priority Date Filing Date Title
JP15783198A JP3852519B2 (en) 1998-06-05 1998-06-05 Unit type electronic equipment

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Publication Number Publication Date
JPH11354944A JPH11354944A (en) 1999-12-24
JP3852519B2 true JP3852519B2 (en) 2006-11-29

Family

ID=15658292

Family Applications (1)

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Publication number Priority date Publication date Assignee Title
ES2273877T3 (en) * 2000-09-12 2007-05-16 Tyco Electronics Amp Gmbh MODULAR CONNECTION SYSTEM FOR ETHERNET APPLICATIONS IN THE INDUSTRIAL SECTOR.

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