JPWO2020065949A1 - Guided safety door - Google Patents

Guided safety door Download PDF

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JPWO2020065949A1
JPWO2020065949A1 JP2020547822A JP2020547822A JPWO2020065949A1 JP WO2020065949 A1 JPWO2020065949 A1 JP WO2020065949A1 JP 2020547822 A JP2020547822 A JP 2020547822A JP 2020547822 A JP2020547822 A JP 2020547822A JP WO2020065949 A1 JPWO2020065949 A1 JP WO2020065949A1
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door
key
guide
hole
closed
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JP7073518B2 (en
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鈴木　俊史
俊史 鈴木
惠史 鈴山
惠史 鈴山
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/08—Protective coverings for parts of machine tools; Splash guards

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  • Mechanical Engineering (AREA)
  • Auxiliary Devices For Machine Tools (AREA)

Abstract

スイッチを保護するガイド付き安全扉であって、作業機本体の開口部を開閉させる扉部材と、前記扉部材の閉じる方向に突き出したキー部材および、前記扉部材が閉じられ場合に前記キー部材が挿入するキー穴を備えたキー受け部材からなるロック装置と、前記キー部材に隣接して取り付けられ、前記扉部材の閉じる方向に前記キー部材よりも突き出したガイド部材と、前記扉部材が閉じられ場合に前記のガイド部材が挿入するガイド穴が形成されたガイド受け部材とを有する。A guided safety door that protects the switch, the door member that opens and closes the opening of the work machine body, the key member that protrudes in the closing direction of the door member, and the key member when the door member is closed. A lock device composed of a key receiving member having a key hole to be inserted, a guide member attached adjacent to the key member and protruding from the key member in the closing direction of the door member, and the door member are closed. In some cases, the guide receiving member has a guide hole for inserting the guide member.

Description

本発明は、開閉を確認するためのスイッチを設けた安全扉に関し、特にスイッチを保護するためのガイド部材を設けたガイド付き安全扉に関する。 The present invention relates to a safety door provided with a switch for confirming opening / closing, and more particularly to a guided safety door provided with a guide member for protecting the switch.

自動機では、扉が開いた状態で駆動しないように、例えば電磁ロックを備え付けた安全扉となっている。下記特許文献１には、工作機械の安全扉を構成する電磁式のロックスイッチが開示されている。この従来例の電磁ロックスイッチは、工作機械が設置された自動工作エリアの出入り口の扉に取り付けられている。そのロック機構は、インターロック付きのスイッチ本体のキー穴に対して、開閉扉に取り付けられたキー部材が抜き差しするように構成されたものである。 The automatic machine has a safety door equipped with, for example, an electromagnetic lock so that the door does not drive when the door is open. The following Patent Document 1 discloses an electromagnetic lock switch constituting a safety door of a machine tool. This conventional electromagnetic lock switch is attached to the door of the doorway of the automatic work area where the machine tool is installed. The lock mechanism is configured so that a key member attached to an opening / closing door is inserted into and removed from the key hole of the switch body with an interlock.

電磁ロックスイッチは、キー部材が抜かれた状態では回転カムによってプランジャが復帰バネに抗して押し下げられ、スイッチがオフ状態となる。一方、挿入したキー部材が回転カムを回動させることにより、プランジャが回転カムに入ることによって変位し、スイッチがオン状態となる。ロック機構は、ソレノイドロック式であり、電磁ソレノイドが励磁されてコアが上方に変位することでロック部材がロック方向である左方にスライド変位してロックがかかる。そして、電磁ソレノイドの励磁が解除されることにより、バネによってロック部材がロック解除方向にスライド変位し、アンロック状態に切り換えられる。 In the electromagnetic lock switch, when the key member is removed, the plunger is pushed down against the return spring by the rotary cam, and the switch is turned off. On the other hand, when the inserted key member rotates the rotary cam, the plunger enters the rotary cam and is displaced, so that the switch is turned on. The lock mechanism is a solenoid lock type, and when the electromagnetic solenoid is excited and the core is displaced upward, the lock member is slid to the left in the locking direction to be locked. Then, when the excitation of the electromagnetic solenoid is released, the lock member is slidably displaced in the unlocking direction by the spring, and the lock member is switched to the unlocked state.

特開２００５−３８６６４号公報Japanese Unexamined Patent Publication No. 2005-386664

前記従来例の電磁ロックスイッチは、キー部材の強度が高くないため、扉を開閉する際にスイッチ本体側に当たって破損してしまうことがある。取り付けられた開閉扉にはある程度の遊び、つまり僅かにガタがあって、多少のズレを調節しながらキー部材をキー穴に挿入するようにして閉じられる。その際、キー部材がキー穴に対して直接挿入されずに強い力で扉が閉められると、キー部材の先端がスイッチ本体側に当たって強い衝撃を受けることがあるからである。その場合、キー部材の破損によってロックがかからなくなると、自動機が駆動停止状態になってしまうため、スイッチが修理されるまで停止状態が続くことにより生産性が低下してしまう。 Since the strength of the key member of the electromagnetic lock switch of the conventional example is not high, the electromagnetic lock switch may hit the switch body side when the door is opened and closed and may be damaged. The attached opening / closing door has a certain amount of play, that is, there is a slight backlash, and the key member is inserted into the key hole while adjusting a slight deviation to close the door. At that time, if the door is closed with a strong force without the key member being directly inserted into the key hole, the tip of the key member may hit the switch body side and receive a strong impact. In that case, if the lock is not applied due to damage to the key member, the automatic machine will be in the drive-stopped state, and the stopped state will continue until the switch is repaired, resulting in a decrease in productivity.

そこで、本発明は、かかる課題を解決すべく、スイッチを保護するガイド付き安全扉を提供することを目的とする。 Therefore, an object of the present invention is to provide a guided safety door for protecting a switch in order to solve such a problem.

本発明の一態様におけるガイド付き安全扉は、作業機本体の開口部を開閉させる扉部材と、前記扉部材の閉じる方向に突き出したキー部材および、前記扉部材が閉じられ場合に前記キー部材が挿入するキー穴を備えたキー受け部材からなるロック装置と、前記キー部材に隣接して取り付けられ、前記扉部材の閉じる方向に前記キー部材よりも突き出したガイド部材と、前記扉部材が閉じられ場合に前記のガイド部材が挿入するガイド穴が形成されたガイド受け部材とを有する。 The guided safety door according to one aspect of the present invention includes a door member that opens and closes an opening of a working machine main body, a key member that protrudes in the closing direction of the door member, and the key member when the door member is closed. A lock device composed of a key receiving member having a key hole to be inserted, a guide member attached adjacent to the key member and protruding from the key member in the closing direction of the door member, and the door member are closed. In some cases, the guide receiving member has a guide hole for inserting the guide member.

前記構成によれば、扉部材によって開口部を閉じる場合、キー受け部材のキー穴にキー部材が挿入されてロック装置が作動するが、その際、キー部材とキー穴との位置がずれていたとしても、ガイド部材が衝突してキー部材を保護し、そのガイド部材がガイド穴に挿入されることにより、キー穴にキー部材が挿入される。 According to the above configuration, when the opening is closed by the door member, the key member is inserted into the key hole of the key receiving member to operate the lock device, but at that time, the positions of the key member and the key hole are displaced. Even so, the key member is inserted into the key hole by colliding with the guide member to protect the key member and inserting the guide member into the guide hole.

加工機械ラインを示した斜視図である。It is a perspective view which showed the processing machine line. 前カバーの開閉動作を示した側面図である。It is a side view which showed the opening and closing operation of a front cover. 前カバーを背面側から示した斜視図である。It is a perspective view which showed the front cover from the back side. 電磁ロックスイッチを前カバーの背面側から示した図である。It is the figure which showed the electromagnetic lock switch from the back side of the front cover. 電磁ロックスイッチを図４の矢印Ｒ方向から示した側面図である。It is a side view which showed the electromagnetic lock switch from the arrow R direction of FIG.

次に、本発明に係るガイド付き安全扉の一実施形態について、図面を参照しながら以下に説明する。特に、本実施形態では工作機械を複数並べた加工機械ラインにおける安全扉を例に挙げて説明する。図１は、最小単位で構成された加工機械ラインを示した斜視図である。この加工機械ライン１は、基礎となるベース２の上に加工機械として、モジュール化された工作機械５が搭載されている。加工機械ライン１は、ベース２の上に２台の工作機械５が幅方向に並べられ、互いに近接して配置されている。そして、工作機械５は、メンテナンスし易いように、可動ベッド上に組み付けられて前後方向への移動が可能な構造を有している。 Next, an embodiment of the guided safety door according to the present invention will be described below with reference to the drawings. In particular, in the present embodiment, a safety door in a processing machine line in which a plurality of machine tools are arranged will be described as an example. FIG. 1 is a perspective view showing a processing machine line configured in the smallest unit. In this processing machine line 1, a modularized machine tool 5 is mounted as a processing machine on a base 2 which is a base. In the processing machine line 1, two machine tools 5 are arranged in the width direction on the base 2 and arranged close to each other. The machine tool 5 has a structure that is assembled on a movable bed and can be moved in the front-rear direction for easy maintenance.

２台の工作機械５は、外観を統一した機体カバー６によって全体が覆われ、その前部には開閉可能な前カバー７が形成されている。加工機械ライン１は、この前カバー７が連続することによって、隣り合う工作機械５の間を搬送ロボットが行き来する搬送空間７０が構成されている。図面には記載されていないが、加工機械ライン１の搬送空間７０内に、各々の工作機械５とワークの受け渡しを行うためのワーク自動搬送機が組み付けられている。そして、工作機械５は、機体カバー６の内部にワークに対して切削などの加工を行う閉じられた加工室が構成され、前扉の開閉によって搬送ロボットとの間でワークの受渡しが行われるようになっている。 The entire two machine tools 5 are covered with a machine cover 6 having a unified appearance, and a front cover 7 that can be opened and closed is formed at the front portion thereof. The processing machine line 1 is configured by the continuous front cover 7 to form a transfer space 70 in which a transfer robot moves back and forth between adjacent machine tools 5. Although not shown in the drawing, an automatic work transfer machine for delivering the work to each machine tool 5 is assembled in the transfer space 70 of the processing machine line 1. Then, the machine tool 5 is configured with a closed processing chamber for processing the work such as cutting inside the body cover 6, and the work is delivered to and from the transfer robot by opening and closing the front door. It has become.

加工機械ライン１は、工作機械５やワーク搬送装置のメンテナンスや部品交換を行えるように、前カバー７が大きく開くように構成されている。図１に示す機械加工ライン１では、２台ある工作機械５の一方側の前カバー７が閉じ、他方側の前カバー７が開いた状態が表現されている。図２は、そうした前カバー７の開閉動作を示した側面図であり、図３は、前カバー７を工作機械５側つまり背面側から示した斜視図である。前カバー７は、上下２つの部材に分割され、上方の前扉７Ａと下方の固定カバー７Ｂとによって構成されている。図１に示すように、前扉７Ａは、工作機械５の１台分の幅で形成され、固定カバー７Ｂは、ベース２の幅（工作機械５の２台分）で形成されている。 The processing machine line 1 is configured such that the front cover 7 is wide open so that the machine tool 5 and the work transfer device can be maintained and parts can be replaced. In the machining line 1 shown in FIG. 1, a state in which the front cover 7 on one side of the two machine tools 5 is closed and the front cover 7 on the other side is open is expressed. FIG. 2 is a side view showing the opening / closing operation of the front cover 7, and FIG. 3 is a perspective view showing the front cover 7 from the machine tool 5 side, that is, the back side. The front cover 7 is divided into two upper and lower members, and is composed of an upper front door 7A and a lower fixed cover 7B. As shown in FIG. 1, the front door 7A is formed with the width of one machine tool 5, and the fixed cover 7B is formed with the width of the base 2 (for two machine tools 5).

さらに前扉７Ａは、回転扉部材１１と吊扉部材１２との２つの部材から構成され、開いた時には図２の一点鎖線で示すように上方へ回転しながら折り畳まれる折れ戸タイプである。その前扉７Ａを開閉するには、作業者が吊扉部材１２の下端部分に固定された取手１３を持って行われる。すなわち、前扉７Ａは、作業者が取手１３を握って上方へと持ち上げるようにして開けられ、引き下げることによって閉じられるようになっている。そうした前扉７Ａは、作業者による上方への回転動作を補助するとともに、上方に持ち上げられた後の開状態が保たれるように、回転扉部材１１に対して工作機械５との間にダンパ８が連結されている。 Further, the front door 7A is a folding door type composed of two members, a rotating door member 11 and a hanging door member 12, and when opened, the front door 7A is folded while rotating upward as shown by the alternate long and short dash line in FIG. The opening and closing of the front door 7A is performed by an operator holding a handle 13 fixed to a lower end portion of the hanging door member 12. That is, the front door 7A is opened so that the operator holds the handle 13 and lifts it upward, and is closed by pulling it down. Such a front door 7A is a damper between the rotary door member 11 and the machine tool 5 so as to assist the operator in the upward rotation operation and to maintain the open state after being lifted upward. 8 are connected.

前扉７Ａの回転扉部材１１は、搬送空間７０を構成するため略９０度に湾曲した形状のカバー部１１１と、そのカバー部１１１の幅方向両端から上方に延びる二股のアーム部１１２によって形成されている。アーム部１１２は、工作機械５の前面に取り付けられた操作パネル３を挟むようにして配置され、その上端部が回転軸１４によって軸支されている。回転軸１４は、工作機械５の高い位置にあり、前扉７Ａが一点鎖線で示すように開いた場合、回転扉部材１１が上向きに跳ね上げられるようになっている。また、回転扉部材１１と吊扉部材１２とは蝶番１５によって連結され、吊扉部材１２の吊下げられた姿勢が維持されるようになっている。そのため、開いたときの前扉７は、折り畳まれてコンパクトな状態になる。 The rotary door member 11 of the front door 7A is formed by a cover portion 111 having a shape curved at approximately 90 degrees to form a transport space 70, and a bifurcated arm portion 112 extending upward from both ends in the width direction of the cover portion 111. ing. The arm portion 112 is arranged so as to sandwich the operation panel 3 attached to the front surface of the machine tool 5, and the upper end portion thereof is pivotally supported by the rotating shaft 14. The rotary shaft 14 is located at a high position of the machine tool 5, and when the front door 7A is opened as shown by the alternate long and short dash line, the rotary door member 11 is flipped up upward. Further, the rotary door member 11 and the hanging door member 12 are connected by a hinge 15 so that the suspended posture of the hanging door member 12 is maintained. Therefore, the front door 7 when opened is folded into a compact state.

ところで、搬送空間７０を構成する前扉７Ａは、電磁ロックスイッチ２０が取り付けられた安全扉として構成されている。ここでは従来例と同様にソレノイドロック方式が使用され、前扉７Ａが閉じられるとキー部材がスイッチ本体のキー穴に挿入され、ソレノイドに電力が供給されることにより、その電磁力によってシャフトが圧縮バネの力に抗してカムの凹部にはまり込み、キーの抜けないつまり前扉７Ａの開かないロック状態となる。一方で、ソレノイドへの電力供給を遮断することにより、バネ力によってシャフトが戻されてカムの回転が自由になり、キーを抜き取りが可能な、つまり前扉７Ａを開けることが可能なロック解除状態となる。 By the way, the front door 7A constituting the transport space 70 is configured as a safety door to which the electromagnetic lock switch 20 is attached. Here, the solenoid lock method is used as in the conventional example, and when the front door 7A is closed, the key member is inserted into the key hole of the switch body, and power is supplied to the solenoid, so that the shaft is compressed by the electromagnetic force. It gets stuck in the recess of the cam against the force of the spring, and the key cannot be pulled out, that is, the front door 7A cannot be opened. On the other hand, by cutting off the power supply to the solenoid, the shaft is returned by the spring force and the cam can rotate freely, and the key can be removed, that is, the front door 7A can be opened in the unlocked state. It becomes.

前扉７Ａにおける電磁ロックスイッチ２０は、吊扉部材１２の下端部裏面にスイッチ本体２１が固定され、固定カバー７Ｂ側にスイッチ本体２１へと差し込まれるキー部材２２（図５参照）が取り付けられている。ここで、図４及び図５は、電磁ロックスイッチ２０を示した図であり、図４は、前カバー７の背面側から示した図で、図５は、図４の矢印Ｒ方向から示した側面図である。スイッチ本体２１は、ブラケット２３によって吊扉部材１２に固定され、その切欠き部２３１がキー穴２１１に合わせて形成されている。 In the electromagnetic lock switch 20 of the front door 7A, the switch body 21 is fixed to the back surface of the lower end portion of the hanging door member 12, and the key member 22 (see FIG. 5) to be inserted into the switch body 21 is attached to the fixed cover 7B side. There is. Here, FIGS. 4 and 5 are views showing the electromagnetic lock switch 20, FIG. 4 is a view shown from the back side of the front cover 7, and FIG. 5 is shown from the arrow R direction of FIG. It is a side view. The switch body 21 is fixed to the hanging door member 12 by the bracket 23, and the notch portion 231 thereof is formed in accordance with the key hole 211.

一方、固定カバー７Ｂには、閉じられる前扉７Ａ（特に、吊扉部材１２）の下端部分に、ゴムパッドを当てて位置決めするようにした受け部材１６が上方に突き出すようにして固定されている。また、その固定カバー７Ｂには、受け部材１６と同様に、上方に突き出すようにしてブラケット１７が固定され、そこに電磁ロックスイッチ２０のキー部材２２が取り付けられている。よって、前扉７Ａが閉じられる場合、電磁ロックスイッチ２０は、スイッチ本体２１のキー穴２１１がキー部材２２へと向かって移動し、位置が合せられることによってキー部材２２がスイッチ本体２１のキー穴２１１へと挿入される。 On the other hand, the receiving member 16 which is positioned by applying a rubber pad to the lower end portion of the front door 7A (particularly, the hanging door member 12) to be closed is fixed to the fixed cover 7B so as to project upward. Further, like the receiving member 16, the bracket 17 is fixed to the fixed cover 7B so as to project upward, and the key member 22 of the electromagnetic lock switch 20 is attached thereto. Therefore, when the front door 7A is closed, in the electromagnetic lock switch 20, the key hole 211 of the switch body 21 moves toward the key member 22, and the key member 22 is aligned with the key hole of the switch body 21. It is inserted into 211.

ところが、前扉７Ａのように大きな扉であって、２部品が蝶番１５によって連結された折れ戸タイプでは、キー部材２２をスイッチ本体２１のキー穴２１１にスムーズに差し込むことが難しかった。上端部の回転軸１４や蝶番１５による連結部分の剛性をあまり高めてしまうと、大きな前扉７Ａの場合には微妙なズレによってキー部材２２がキー穴２１１に入らなくなってしまう。そのため、回転軸１４や蝶番１５の連結部分には多少の遊びが設けられているからである。 However, in a folding door type such as the front door 7A in which two parts are connected by a hinge 15, it is difficult to smoothly insert the key member 22 into the key hole 211 of the switch body 21. If the rigidity of the connecting portion by the rotating shaft 14 and the hinge 15 at the upper end is increased too much, the key member 22 will not fit into the key hole 211 due to a slight deviation in the case of the large front door 7A. Therefore, some play is provided in the connecting portion of the rotating shaft 14 and the hinge 15.

しかし、その遊びのため、前扉７Ａを閉じる時にずれが生じてキー部材２２がキー穴２１１に入らないことがあり、閉じる勢いが強い場合には、キー部材２２の先端がブラケット２３に衝突して折れてしまうことがある。こうしてキー部材２２が破損してしまうと、前扉７Ａが閉じられたことを示す電磁ロックスイッチ２０からの検知信号が発信されず、キー部材２２が修理されるまで加工機械ライン１が長い時間停止してしまうことになる。そこで、本実施形態では、そうした生産停止を回避するため、キー部材２２を保護する構成がとられている。 However, due to the play, the key member 22 may not enter the key hole 211 due to a shift when closing the front door 7A, and when the closing momentum is strong, the tip of the key member 22 collides with the bracket 23. It may break. When the key member 22 is damaged in this way, the detection signal indicating that the front door 7A is closed is not transmitted, and the processing machine line 1 is stopped for a long time until the key member 22 is repaired. Will end up doing. Therefore, in the present embodiment, in order to avoid such a production stoppage, the key member 22 is protected.

具体的には、キー部材２２が取り付けられたブラケット１７に、そのキー部材２に隣接してガイド部２５が形成されている。ブラケット１７は、鉛直方向に起立した状態で固定され、そのブラケット１７に対し、縦向きに配置された板状のキー部材２２が、水平方向に突き出すようにして取り付けられている。同じく板状のガイド部材２５も、そのブラケット１７に対してキー部材２２と平行になるように縦向きに形成されている。ガイド部材２５は、その突き出した方向に横幅（図面では縦方向の幅）が狭くなるように形成され、丸い形状の先端部がキー部材２２よりも突き出るようにした長寸法さで形成されている。その突出し量Ｓによって、矢印で示す方向から近づくスイッチ本体２１（ブラケット２３）に対して、ガイド部材２５の先端がキー部材２２より先に衝突するようになっている。 Specifically, a guide portion 25 is formed adjacent to the key member 2 on the bracket 17 to which the key member 22 is attached. The bracket 17 is fixed in an upright state in the vertical direction, and a plate-shaped key member 22 arranged vertically is attached to the bracket 17 so as to project in the horizontal direction. Similarly, the plate-shaped guide member 25 is also formed vertically with respect to the bracket 17 so as to be parallel to the key member 22. The guide member 25 is formed so that the horizontal width (the width in the vertical direction in the drawing) becomes narrower in the protruding direction, and the guide member 25 has a long dimension such that the tip portion having a round shape protrudes from the key member 22. .. Due to the protrusion amount S, the tip of the guide member 25 collides with the switch body 21 (bracket 23) approaching from the direction indicated by the arrow before the key member 22.

一方、スイッチ本体２１側のブラケット２３には、ガイド部材２５の挿入が可能なガイド穴２３３がキー穴２１１と平行に且つ隣接して形成されている。ガイド穴２３３は、ガイド部材２５に対応した縦向きの長孔形状であって、ガイド部材２５の先端部が挿入しやすいように幅広な部分が形成されている。すなわち、ガイド部材２５の形状は、縦方向の中央部分が幅方向の両側に山形に広げられ、縦方向の上下端部はガイド部材２５を位置決めするように幅が狭く形成されている。 On the other hand, in the bracket 23 on the switch body 21 side, a guide hole 233 into which the guide member 25 can be inserted is formed parallel to and adjacent to the key hole 211. The guide hole 233 has a vertically elongated hole shape corresponding to the guide member 25, and a wide portion is formed so that the tip end portion of the guide member 25 can be easily inserted. That is, in the shape of the guide member 25, the central portion in the vertical direction is widened in a chevron shape on both sides in the width direction, and the upper and lower end portions in the vertical direction are narrowly formed so as to position the guide member 25.

そこで、図２の一点鎖線で示すように、上方に跳ね上げられた状態の前扉７Ａは、取手１３を握った作業者によって矢印で示すように引き下げられるようにして閉じられる。吊扉部材１２は下向きのまま移動し、その吊扉部材１２に引っ張られるようにして回転扉部材１１が回転軸１４を中心にして回転する。そして、回転するとともに引き下げられた前扉７Ａは、最終的に吊扉部材１２の下端部分が固定カバー７Ｂ側の受け部材１６に当てられた状態で閉じられる。その際、電ロックスイッチ２０は、スイッチ本体２１のキー穴２１１にキー部材２２が挿入され、前扉７Ａにはロックがかけられる。 Therefore, as shown by the alternate long and short dash line in FIG. 2, the front door 7A in the state of being flipped up is closed by the operator holding the handle 13 so as to be pulled down as indicated by the arrow. The hanging door member 12 moves downward, and the rotating door member 11 rotates about the rotating shaft 14 so as to be pulled by the hanging door member 12. Then, the front door 7A, which is rotated and pulled down, is finally closed with the lower end portion of the hanging door member 12 in contact with the receiving member 16 on the fixed cover 7B side. At that time, in the electric lock switch 20, the key member 22 is inserted into the key hole 211 of the switch body 21, and the front door 7A is locked.

前扉７Ａが閉じられるとき、取手１３を引く作業者の力の加え方によって、キー穴２１１とキー部材２２との位置がずれてしまうことがある。このとき本実施形態では、ガイド部材２５の先端がブラケット２３に当たって止まるため、キー部材２５が衝突して破損してしまうことを防止することができる。 When the front door 7A is closed, the positions of the key hole 211 and the key member 22 may shift depending on how the force of the operator pulling the handle 13 is applied. At this time, in the present embodiment, since the tip of the guide member 25 hits the bracket 23 and stops, it is possible to prevent the key member 25 from colliding and being damaged.

ガイド部材２５の先端がブラケット２３に当たった後は、作業者が吊扉部材１２を左右方向に僅かにずらすことにより、ガイド部材２５がガイド孔２３３に入り込み、それに導かれるようにキー穴２１１にキー部材２２が差し込まれる。よって、ガイド部材２５の先端がブラケット２３に当たった後も、キー部材２２を保持しながらキー穴２１１への挿入することができ、また、幅広部分をもつガイド穴２３３へガイド部材２５が挿入し易くなっていることにより、キー穴２１１へのキー部材２２の挿入が簡単に行える。 After the tip of the guide member 25 hits the bracket 23, the operator slightly shifts the hanging door member 12 in the left-right direction so that the guide member 25 enters the guide hole 233 and is guided into the key hole 211. The key member 22 is inserted. Therefore, even after the tip of the guide member 25 hits the bracket 23, the guide member 25 can be inserted into the key hole 211 while holding the key member 22, and the guide member 25 is inserted into the guide hole 233 having a wide portion. Since it is easy to insert the key member 22 into the key hole 211, the key member 22 can be easily inserted.

以上、本発明の一実施形態について説明したが、本発明はこれらに限定されるものではなく、その趣旨を逸脱しない範囲で様々な変更が可能である。
例えば、前記実施形態では、回転扉部材１１と吊扉部材１２とからなる折れ戸タイプの前扉７Ａについて説明したが、扉の形式は、１枚の開き戸タイプや、引（吊引）戸タイプあるいは横方向に開閉する折れ戸タイプなどの安全扉にも対応可能である。Although one embodiment of the present invention has been described above, the present invention is not limited to these, and various modifications can be made without departing from the spirit of the present invention.
For example, in the above-described embodiment, the folding door type front door 7A composed of the rotating door member 11 and the hanging door member 12 has been described, but the door type is a single hinged door type or a sliding (hanging) door type. Alternatively, it can also be used for safety doors such as folding doors that open and close in the lateral direction.

１…加工機械ライン ５…工作機械 ７…前カバー ７Ａ…前扉 ７Ｂ…固定カバー １１…回転扉部材 １２…吊扉部材 ２０…電磁ロックスイッチ ２１…スイッチ本体 ２２…キー部材 ２３…ブラケット ２５…ガイド部 ２１１…キー穴 ２３３…ガイド穴 1 ... Machining machine line 5 ... Machine tool 7 ... Front cover 7A ... Front door 7B ... Fixed cover 11 ... Rotating door member 12 ... Suspended door member 20 ... Electromagnetic lock switch 21 ... Switch body 22 ... Key member 23 ... Bracket 25 ... Guide Part 211 ... Key hole 233 ... Guide hole

Claims (4)

作業機本体の開口部を開閉させる扉部材と、
前記扉部材の閉じる方向に突き出したキー部材および、前記扉部材が閉じられた場合に前記キー部材が挿入するキー穴を備えたキー受け部材からなるロック装置と、
前記キー部材に隣接して取り付けられ、前記扉部材の閉じる方向に前記キー部材よりも突き出したガイド部材と、
前記扉部材が閉じられ場合に前記のガイド部材が挿入するガイド穴が形成されたガイド受け部材と、
を有するガイド付き安全扉。A door member that opens and closes the opening of the work machine body,
A lock device including a key member protruding in the closing direction of the door member and a key receiving member having a key hole into which the key member is inserted when the door member is closed.
A guide member that is attached adjacent to the key member and protrudes from the key member in the closing direction of the door member.
A guide receiving member having a guide hole into which the guide member is inserted when the door member is closed.
Guided safety door with. 前記ガイド部材は、先端部に向けて横幅が狭くなるように形成された板状の部材であり、前記ガイド受け部材のガイド穴は、前記ガイド部材に対応した長孔形状であって、前記ガイド部材の先端部が挿入される部分が広く形成されている請求項１に記載のガイド付き安全扉。 The guide member is a plate-shaped member formed so that the width becomes narrower toward the tip portion, and the guide hole of the guide receiving member has an elongated hole shape corresponding to the guide member, and the guide. The guided safety door according to claim 1, wherein a portion into which the tip end portion of the member is inserted is widely formed. 前記扉部材は、軸部材によって連結された上扉と下扉とからなる折扉であり、作業機本体側に前記上扉が上方の水平な回転軸よって軸支され、前記下扉に前記キー受部材と前記ガイド受け部材とが設けられた請求項１又は請求項２に記載のガイド付き安全扉。 The door member is a folding door composed of an upper door and a lower door connected by a shaft member. The upper door is pivotally supported on the working machine main body side by an upper horizontal rotating shaft, and the key is attached to the lower door. The guided safety door according to claim 1 or 2, wherein the receiving member and the guide receiving member are provided. 前記キー部材および前記ガイド部材が前記作業機本体側に設けられ、前記キー受け部材および前記ガイド受け部材が前記扉部材に設けられた請求項３に記載のガイド付き安全扉。
The guided safety door according to claim 3, wherein the key member and the guide member are provided on the working machine main body side, and the key receiving member and the guide receiving member are provided on the door member.
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