JP2014009503A - Swing door and its lock device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a door body 1, which can be freely opened and closed being installed at an opening for an inspection door or the like; to have a lock to be opened by rotating an operation tool T which is inserted in a gap S between a door-body front-end face plate 1d and the opposite end-face of a door frame 2 and put into an operation shaft 9, and to be forcibly put in an initial open state, so that not to have any lock device exposed on the door-body front face, but still to be closed to a locked state with a mere closing operation of the door body 1 when the door body 1 is being closed.SOLUTION: An operation body 13, which opens a door body 1 by projecting with effect of a lock-opening operation of an operation tool T and by contacting an inclined guide 14d on a latch-receiving 14 side, is arranged to automatically return to an original attitude when the operation tool T is pulled out from an operation shaft 9, so that the operation body 13 does not hinder closing action.

Description

  The present invention relates to a technical field of a hinged door (a hinged door) in which a door is provided in an opening such as an inspection port so that the door can be freely opened and closed, and a lock device in the hinged door.

Generally, in buildings and condominiums, facilities such as air conditioning facilities, gas plugs and distribution boards are installed in the inspection room so that they can be opened and closed as necessary. The opening of the door is provided with a so-called hinged door that is configured so that the door can be opened and closed with the vertical axis as the swing axis. On the surface of such a door, the door is unlocked and locked by a latch. An operation tool for performing the above operation is provided so as to be exposed to the outside (see, for example, Patent Document 1). As described above, the operation tool exposed to the outside is not only troublesome but also has a problem that the appearance is impaired.
Therefore, it is known that a key rod is inserted into a gap (chile) between the door front end surface of the door body and the door frame side end surface facing the end surface, and the lock can be released by operating the key rod. (See, for example, Patent Documents 2 and 3).

JP-A-11-210277 Japanese Patent No. 4509142 Japanese Patent No. 4762372

By the way, the thing shown in the said patent documents 2 and 3 does not have the operation tool for manual operation on the surface of a door, Therefore In this state, it cannot open the door after unlocking, and there is a key stick. The door is slightly released at the initial timing in synchronization with the unlocking operation, and the door is configured to be opened widely by placing a finger on the front end of the door that has been initially opened. .
By the way, since the thing of the said patent document 2 is the structure which receives the urging | biasing force of an ammunition, and is initially open | released, in order to close a door and to lock it by a latch, the door with one hand There is a problem in that the operability with both hands is inferior because it is necessary to perform the lock operation by turning the key stick with the other hand in the closed posture against the urging force.
Further, the method disclosed in Patent Document 3 utilizes the fact that the latch slides on the inclined surfaces (different inclined surfaces) in the process of unlocking the lock and reversely in the process of locking, based on the turning operation of the key stick. It is configured so that the closed position is changed to the initial opened position, and the initial opened position is changed to the closed position, so that any work can be operated with one hand. In addition, there is a problem that any turning operation of the key stick is subject to resistance when the latch slides on the inclined surface, and the turning operation of the key stick is heavy and inferior in operability. These are problems to be solved by the present invention.

The present invention has been created in view of the above circumstances and has been created for the purpose of solving these problems. The invention of claim 1 is pivotally supported by an opening provided on the housing side so as to be freely opened and closed. A door, a latch receiver provided at a door-end side portion of the door, and a locking member that is provided on a facing member facing the door-side end of the door, and is unlocked with a locking posture protruding from the facing member. A latch that can be transformed into a posture and is urged toward the locking posture, and the latch is provided in a gap between the door end side end surface of the door body and the opposing member side end surface facing the end surface In the door provided with a latch deforming means for changing from a locked posture to an unlocked posture based on a rotating operation by an operating tool inserted in the gap, the latch deforming means, Unlocked from the non-acting posture that immerses into the opposing member when the latch is in the locked posture While the actuating body is deformed to the action posture that protrudes from the opposing member side when the force is applied, the non-acting posture of the actuating body is set on the door side in accordance with the timing when the latch changes from the locked posture to the unlocked posture An opening guide for changing the door body from the closed position to the initial open position by contacting the operating body in the process of changing from the operating position to the operating position is provided, and the latch changing means is operated by the operating tool of the operating shaft. The hinged door is provided with a return ammunition for returning the latch changing means to the pre-operation posture based on the release to change the operating body to the non-operating posture.
According to a second aspect of the present invention, there is provided a door body that is pivotally supported by an opening provided on the housing side so as to be openable and closable. A latch that is provided on the opposing member side that is opposed to the locking member and is freely changeable between a locking posture protruding from the opposing member and an unlocking posture to be immersed, and is biased toward the locking posture. Unlocking from the locked posture based on the operation shaft provided in the gap between the door end side end face of the door body and the opposing member side end face opposed to the end face being rotated by the operation tool inserted in the gap. In providing the latch changing means for changing into a posture, the latch changing means is changed from a non-operating posture that immerses into the opposing member side when the latch is in the locking posture to an active posture that protrudes from the opposing member side when in the unlocking posture. On the other hand, there is a latch on the door side. In the process of changing from the non-acting posture of the working body to the working posture in time to change from the locked posture to the unlocking posture, the door body is changed from the closed posture to the initial open posture in the process of changing from the non-working posture to the working posture. An opening guide is provided for causing the latch deforming means to return to the non-operating posture by returning the latch deforming means to the pre-operation posture based on the operation release by the operation tool of the operation shaft. It is a locking device in a hinged door characterized by providing a return ammo.
The invention according to claim 3 is the locking device for the hinged door according to claim 2, characterized in that the actuating body abuts on the opening guide in synchronization with the release of the latch from the latch receiver.
According to a fourth aspect of the present invention, when the latch deforming means moves in the direction in which the actuating body changes from the non-operating position to the operating position, the latch changes to the latch changing means and changes from the locked position to the unlocked position. However, a change from the locked position to the unlocked position of the latch alone is permitted by releasing the latch from the latch changing means. 4. The locking device for a hinged door according to claim 2, wherein the locking device is biased so as to return to the locking posture side through a return device different from the return device that is transformed into the action posture.
The invention according to claim 5 is arranged on the back surface side of the door body so as to be detachable toward the latch in the locking posture locked to the latch receiver, and the latching posture latch by operation from the back surface side of the door body. 5. The locking device for a hinged door according to claim 2, further comprising an operating body for releasing the lock on the latch receiver and bringing the unlocked state into an unlocked state.

With the invention according to claim 1 or 2, the operation shaft provided in the gap between the door end side end surface of the door body and the housing side facing the end surface is unlocked by rotating the operation shaft with the operation tool. The operating body protrudes from the operating position, and the door can be changed from the fully closed position to the initial open position.Therefore, the lock device is not exposed on the surface of the door body, and the appearance can be improved. As a result, the operating body that protrudes to the operating posture to return to the initial opening posture automatically returns to the non-operating posture, so that the operating body becomes obstructive when closing the opened door. Therefore, it can be fully closed simply by closing the door.
According to the invention of claim 3, the load that the operating body comes into contact with the release guide and opens the door body as in the case where the operating body comes into contact with the release guide before the latch comes out of the latch receiver. Accordingly, the latch is not pressed against the latch receiver, and the opening operation of the door body to the initial opening posture becomes smooth.
According to the invention of claim 4, the latch resists the urging force of another return bulge provided for the latch body, not the urging force of the return bulge for returning the operating body to the non-acting posture. In this state, the latch is changed from the locked position to the unlocked position, and the latch that is changed to the unlocked position is returned to the locked position by receiving the urging force of the other return ammunition. When closing the body, the operating body does not operate at all, and the latch is moved in and out independently to be in the locked state, so that it is not necessary to operate the operation tool every time and the operability is improved.
When the door is closed with the worker on the back side of the door body, it can be unlocked by operating the operation body. Can be avoided.

It is a front view of a hinged door. It is the horizontal sectional view which omitted a part of the hinged door. It is a partially cutaway front view of a locking device. It is a perspective view which shows the state in which the lock main body is attached to the door frame. It is a perspective view which shows the state in which the lock receiving part is attached to the door. (A) (B) (C) is the top view which showed the process of unlocking a locking device using an operation tool. (A), (B), and (C) are principal part cross-sectional front views of the state which removed the front case of the case body which showed the process of unlocking a locking device using an operation tool. (A), (B), and (C) are principal part cross-sectional top views which showed the process of unlocking a locking device using an operation tool. (A), (B), and (C) are principal part cross-sectional top views which show the relationship between an action body and a latch receptacle in the process of unlocking a locking device using an operation tool. (A), (B), and (C) are principal part cross-sectional front views of the state which removed the front case of the case body which showed the process of performing an emergency unlocking using the emergency operation body. (A), (B), and (C) are main part cross-sectional top views which showed the process of emergency unlocking using the emergency operation body. (A), (B), and (C) are a plan view, a front view, and a bottom view of the cam body. (A) and (B) are the side view and front view of a latch. (A) and (B) are the side view and front view of an action body. (A), (B), (C), (D), and (E) are a front view, a rear view, a side view, a bottom view, and a plan view of a latch receiver. (A), (B), (C), (D), (E), and (F) are a front view, a right side view, a rear view, a left side view, a plan view, and a rear surface when an emergency operation body is operated. FIG. It is a front view of the hinged door which shows 2nd embodiment. It is a longitudinal cross-sectional view of the intermediate door of 2nd embodiment. It is a horizontal sectional view of the hinged door which shows 2nd embodiment.

  Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. In the drawings, reference numeral 1 denotes a door provided in an inspection port (inspection window). The door 1 has a door-side end that can be freely opened and closed via a vertical axis 3 and 3a on a door frame 2. It is pivotally supported. The door end side end of the door body 1 includes a back plate 1a, a concave plate 1b that is bent from the back plate 1a to the front side, and a stepped surface plate that is bent from the concave plate 1b toward the door tip. 1c, a front-end surface plate 1d bent from the stepped surface plate 1c toward the front side, and a front-side plate 1e bent from the front-end surface plate 1d toward the door butt side. On the other hand, the door frame (corresponding to the facing member facing the door end side end portion in the first embodiment) 2 side facing this is a convex plate portion in a state of being opposed to the concave plate 1b. 2a is formed in a protruding manner, and a gap (chilli) S is formed between the front end face plate 1d and the end face of the door frame 2 facing the front end face plate 1d. The convex plate portion 2a is provided with a through hole 2d for inserting the operation tool T, and a fixing plate 2f for fixing a screw hole 2e for fixing with the screw 8. .

  Reference numeral 4 denotes a lock body incorporated in the convex plate portion 2a portion of the door frame 2, 5 denotes a lock receiver incorporated into the door body 1 side, and the case body 6 constituting the lock body 4 includes the door frame convex plate portion 2a. The mounting piece 6a projecting vertically from the case body 6 is brought into contact with the fixing plate 2f by being inserted and assembled into the mounting hole 2c formed in the projecting end surface 2b from the inside of the opening, and further the cover body 7 is projected from the inside of the opening. In the applied state, the case body 6 and the cover body 7 are fixed to the convex plate portion 2a through screws 8. The cover body 7 is provided with a later-described latch 11, through-holes 7 a and 7 b for allowing the operating body 13 to move in and out, and a through-hole 7 c for inserting the operation tool T, respectively.

  The case body 6 is pivotally supported by an operation shaft 9 which is disposed so as to face in the front-rear direction with the door body 1 closed and to be positioned at the gap S position in the closed state. A pair of cam bodies 10 facing the operation shaft 9 with a gap are provided so as to swing together with the operation shaft 9. The operation shaft 9 is formed with an insertion hole 9a (see FIG. 12B) into which the operation tool T inserted into the gap S is inserted. In this embodiment, the operation shaft 9 is a hexagonal hole. The operating shaft 9 is rotated together with the cam body 10 by rotating and operating the operating tool T with the tip end of T inserted into the insertion hole 9a. Needless to say, the insertion hole 9a only needs to rotate the operation shaft 9, and may be a minus groove or a plus groove formed on a screw head of a general-purpose screw.

11 is a latch which is guided by a latch guide 11a provided in the case body 6 so as to be able to move in and out. The latch 11 (see FIG. 13) includes a latching portion 11b which latches on a latch receiver 14 side which will be described later, A thin portion 11d that is thin with respect to the locking portion via a stepped portion 11c and is set to a size sandwiched between opposing cam bodies 10 to be described later, and protrudes in a rod shape from the thin portion 11d. The projecting portion 11e is configured to include a flange portion 11f formed at the projecting end of the projecting portion 11e, and includes a receiving bar 11g that projects from the flange portion 11f in the front-rear direction.
The latch 11 is adapted to receive a guide for entering and exiting from the latch guide 11a by fitting the front and rear ends of the receiving rod 11g into the latch guide groove 6b which is long in the left-right direction provided in the case body 6. The latch 11 is always urged in the direction protruding from the latch guide 11a, that is, toward the locking position, by the first ammunition (corresponding to another return ammunition) 12 interposed between the flange 6f and the flange 11f. Has been.
On the other hand, a first cam piece 10a projecting from the cam body 10 toward the latch 11 is inserted so as to be positioned between the step portion 11c and the receiving rod 11g. And normally, it is suspended by the operating shaft 9, one end is supported by the cam body 10, and the other end is supported by the case body 6 (corresponding to the “returning rocket” for the operating body of the present invention). The first cam piece 10a (see FIG. 12) is elastically abutted against the latch guide 11a in response to the urging force of 12a, and further movement toward the lock receiver 5 is restricted. However, in this state, the latch 11 protrudes from the latch guide 11a and has a locking posture in which the latch 11 is locked to the lock receiving body 5 side as will be described later. Incidentally, the first ammunition 12 is set to a smaller urging force than the second ammunition 12a.
Further, when the protruding latch 11 is pushed to the case body 6 side, the latch 11 is sunk against the first bullet 12 and is in contact with the latch guide 11a. The thin portion 11d moves to the side, that is, only the latch 11 is moved to the unlocking side against the first ammunition 12 without swinging the cam body 10 against the second ammunition 12a. Can be done.
Further, the locking portion 11b is provided with an inclined guide 11h. The inclined guide 11h is provided on the back plate abutting surface portion 14b of the latch receiver 14 to be described later when the opened door 1 is closed. Due to the contact, a load in the unlocking direction is received, whereby the latch 11 is automatically deformed to the unlocking posture side against the first ammunition 12 and the abutting surface portion of the latch receiver 14 When the vehicle passes over 14a alone and reaches the locking hole 14c formed in the abutting surface portion 14a, it automatically returns to the locked posture under the urging force of the first ammunition 12.

Reference numeral 13 denotes an operating body (see FIG. 14) provided on the side opposite to the latch 11 with respect to the operating shaft 9, and the operating body 13 is guided by an operating body guide 13 a provided in the case body 6 so as to be able to appear and retract. It has come to be. The base end portion 13b of the operating body 13 is narrowed through the step portion 13c and is set to a size sandwiched between the opposed cam members 10. The base end portion is spaced from the step portion 13c. 13 d is formed so as to protrude in the front-rear direction, and the receiving rod 13 d is inserted into a working groove guide groove 6 c formed in the case body 6 so as to guide the working body 13 of the working body 13. A haunting guide from 13a is provided.
The cam body 10 is formed with a second cam piece 10b projecting toward the operating body 13 side, and a receiving rod 13d is loosely fitted in a long hole 10c formed in the second cam piece 10b. When the first cam piece 10a is in a locked posture in contact with the latch guide 11a by receiving the urging force of the second elastic machine 12a, the operating body 13 is immersed in the operating body guide 13a. It is comprised so that it may become a non-action posture. Reference numeral 13e denotes a guide roller provided at the tip of the operating body.

On the other hand, the lock receiver 5 includes a latch receiver 14 that removably receives the latch 11 and an emergency opening body 15 that is provided to open the door 1 from the inside of the inspection port. (Refer to FIG. 15) is assembled from the door-end side frame body side to the door-end side frame body side with respect to the door-end side end portion of the door body 1, and is a recess abutted against the door body concave plate 1b. The latch 11 includes a face plate abutting surface portion 14a and a back plate abutting surface portion 14b that abuts against the back plate 1a, and the latch 11 is formed on the concave plate abutting surface portion 14a in the locking posture described above. It is locked by penetrating through the hole 14c and locking through the through hole 1f formed in the concave plate 1b.
Furthermore, inclined guides (corresponding to the open guide of the present invention) 14d are provided at both the upper and lower portions of the concave plate abutting surface portion 14a so as to be biased toward the door butt from the stepped surface plate 1c to the back surface plate 1a. A back plate abutting surface portion 14e that abuts against the back plate 1a from the back side is formed at the tip of the inclined guide 14d. The latch receiver 14 is attached to the end of the door 1 in such a manner that the inclined guide 14d is fitted in the fitting hole 1g provided so as to extend from the back plate 1a to the concave plate 1b. The upper and lower ones of the inclined guides 14d of the latch receiver 14 attached in this manner are arranged to face the operating body 13. In the present embodiment, a pair of inclined guides 14d are formed on the upper and lower sides, but this corresponds to the left-right difference between the door 1 being opened to the right and the left to be opened. can do.

FIGS. 6 to 10 (A) show a normal state in which the door 1 is closed (closed state (locked state)), FIG. 6 (B) shows an intermediate unlocked state, and FIG. 6 (C) shows an unlocked initial opening. In the normal state, the latch 11 protrudes by receiving the urging force of the first ammunition 12, while the operating body 13 is immersed in the case body 6. The protruding latch 11 passes through the through hole 1f and is locked in the locking hole 14c of the latch receiver 14, thereby entering a locked state and restricting the door 1 from being opened. When unlocking from this normal state and opening the door 1, the operating tool T is provided on the operating shaft 9 through the gap S between the front end face plate 1 d of the door 1 and the door frame 2 facing it. In the state where it is inserted into the insertion hole 9a, it is turned so as to resist the second bullet 12a. As the turning operation is continued, the cam body 10 is pressed against the first ammunition 12 by the first cam piece 10a projecting from the cam body 10 toward the latch 11 and pressing the receiving rod 11g of the latch 11. In this state, the latch 11 is inserted into the case body 6, that is, the latch 11 is moved in the direction of coming out of the locking hole 14 c, and at the same time, the second cam piece 10 b protruding from the cam body 10 toward the operating body 13 side. By moving the receiving rod 13d of the operating body 13 loosely fitted in the long hole 10c in the direction of the door body 1 (door bottom direction), the operating body 13 moves in a direction protruding from the case body 6. . Then, by rotating the cam body 10, the actuating body 13 comes into contact with the inclined guide 14d so that the latch 11 comes out of the locking hole 14c and is unlocked. By rotating, the operating body 13 presses the inclined guide 14d toward the side where the door body 1 is opened, so that the door body 1 reaches a slightly opened initial opening position. When the operating tool T is pulled out from the operating shaft 9 after the initial opening state, the cam body 10 is automatically returned and rotated by the urging force of the second bullet 12a, so that the latch 11 is in the first position. In response to the urging force of the ammunition machine 12, the operating body 13 is automatically returned to the non-operating position immersed in the case body 6 side while returning to the locking position protruding from the case body 6.
Even when the door 1 is in the initial open posture and the latch 11 receives the urging force of the first ammunition 12 and returns to the locked posture, the latch 11 is in the locked state because it is in a position removed from the locking hole 14c. The unlocked state is maintained without becoming.
On the other hand, the initially opened door 1 can be fully opened by placing a hand. When the opened door 1 is closed, the operating body 13 has returned to the non-acting posture as described above, and therefore does not interfere with the full closing of the door 1 and has returned to the locked posture. As described above, the latch 11 is configured so as to perform a single intrusion operation against the first ammunition 12 so as to be in a normal posture to be immersed in the locking hole 14 c of the latch receiver 14.

Further, the emergency opening body 15 (see FIG. 16) is assembled from the door bottom side to the concave plate 1b of the door 1, and is abutted against the concave plate 1b and fixed to the concave plate 1b. A pair of concave plate abutting face plates 15a, a back plate opposing face plate 15b that is bent from the back side end of the concave plate abutting face plate 15a toward the door butt side and faces the back plate 1a, and the back plate opposing face plate 15b, and a support plate 15c bent toward the front side from the end of the door butt. The engagement between the pair of concave plate abutting face plates 15a is formed in the latch receiver 14. It faces the stop hole 14c. The back plate 15b is formed with a guide plate 15d that is bent toward the front side in a state of being located between the opposed concave plate butting plate 15a. On the other hand, a shaft portion 16a extending from the operating body 16 penetrates the support plate 15c and the guide plate 15d so as to be movable in the axial direction, and a straddle portion 17a of the actuating plate 17 having a hook shape is formed at the tip of the shaft portion 16a. Although connected, the operating plate 17 is arranged so as to straddle the guide plate 15d with the opening facing the operating body 16 side, and is returned between the guide plate 15d and the support plate 15c. In response to the urging force of the ammunition machine 18, the operating plate straddling portion 17 a is positioned in a non-operating posture where it abuts against the guide plate 15 d.
When the operating body 16 is pushed toward the latch 11 against the return bullet 18 in the non-acting posture (see FIG. 10), the operating plate 17 is guided to the guide plate 15d. After moving to the latch 11 side and coming into contact with the tip of the latch 11, the latch 11 is moved toward the side to be immersed in the case body 6 against the urging force of the first ammunition machine 12, and the latch 11 As a result, the latch 11 is unlocked, and the door 1 can be opened from the inside of the inspection port.

  In the present embodiment configured as described, the door 1 is in a locked state in which the latch 11 is fitted and locked in the locking hole 14c of the latch receiver 14 in the closed position. When the operating tool T inserted into the gap S is inserted into the operating shaft 9 and rotated between the front end face plate 1d and the end face of the door frame 2 opposite to the end face plate 1d, the cam body 10 immerses the latch 11 into the case body 6, The operating body 13 is swung in a direction protruding from the case body 6. When the latch 11 comes out of the locking hole 14c of the latch receiver 14 and enters the unlocked state, the operating body 13 contacts the inclined guide 14d formed on the latch receiver 14, and the cam body 10 rotates thereafter. The action body 13 presses the inclined guide 14d by the movement, and the door body 1 is forcibly opened to the initial opening position by receiving the pressing force. Then, the door 1 in the initial open posture can be fully opened by placing a hand.

As described above, in the embodiment in which the present invention is implemented, since the unlocking device is not provided so as to be exposed to the front plate 1e of the door 1, the appearance of the door 1 is improved and the device is neat. .
Moreover, in this case, when the operating shaft T is operated by the operating tool T to change from the locked posture to the unlocked posture, the latch 11 is locked to the rotating cam body 10 and changed to the unlocked posture. However, after the unlocking operation is performed and the initial release posture is established, when the operation tool T is pulled out from the operation shaft 9, the cam body 10 receives the urging force of the strong second bullet machine 12a, and the original operation state before the operation is performed. Although it automatically returns to the posture, the operating body 13 forcibly moving the door body 1 to the initial returning posture is immersed in the case body 6 in conjunction with the returning operation of the cam body 10. On the other hand, the latch 11 is transformed into a locked posture under the urging force of the first ammunition 12. And in this state, as a result of the latch 11 closing and closing the open door 1 as a result of being able to appear and appear independently against the urging force of the first ammunition 12 without being involved in the cam body 10, Although the latch 11 moves over the latch receiver 14 against the light urging force of the first ammunition 12 just by performing a closing operation that is lightly pushed by hand, the operating body 13 remains stationary without moving. In this state, it is fully closed to return to the locked posture, and no operation tool operation is required.

  In addition, in this case, in the unlocking operation, the actuating body 13 comes into contact with the inclined guide 14d formed in the latch receiver 14 in time with the latch 11 coming out of the locking hole 14c of the latch receiver 14, and the door body. Since a load that changes 1 to the initial opening posture is generated, the latch 11 is in a state in which the operating body 13 is brought into contact with the inclined guide 14d before the latch 11 comes out of the latch receiver 14 to generate an opening load. A smooth opening operation is performed without being disturbed by being pressed against the locking hole 14c.

  On the other hand, when the door 1 is in the open posture and the operator enters the opening and is working, the door 1 is accidentally closed for some reason, and enters the locked posture. When the operator pushes the operating body 16, the operating plate straddling portion 17 a moves in a direction in which the latch 11 is immersed in the case body 6 against the first ammunition machine 12 and is released from the latch receiving engagement hole 14 c. In this state, the door 1 is unlocked, and the door 1 is opened extremely by pushing the door 1 toward the front side in this state. As a result, the door 1 can be automatically locked by being closed, but can be escaped with a simple operation even in an emergency confined inside.

Needless to say, the present invention is not limited to the above-described embodiment, and can also be implemented as, for example, the second embodiment shown in FIGS.
In this device, a pair of left and right first and second door bodies 21 and 22 are pivotally supported on the left and right sides of the opening portion through longitudinal axes 21a and 22a, respectively. Intermediate doors 23, 24, and 25 that slide between the bodies 21 and 22 are provided. Upper and lower brackets 23a and 23b project from the inner surface of the opening of the intermediate door 23 (the details are omitted because the intermediate doors 24 and 25 have the same structure). Is provided with a guide 27 that is fitted into a concave groove-shaped guide rail 26a provided on the upper frame 26 to prevent falling and sliding, and the lower bracket 23b is provided with a ridge provided on the lower frame 28. Rollers 29 that run on the guide rail 28a are provided. These intermediate doors 23, 24, and 25 can be moved individually to the left when the left first door 21 is opened in FIG. 19, and individually moved to the right when the right second door 22 is opened. Can be done.

  And in this thing, between the door end side edge part of the 1st door body 21, and the opposing edge part of the intermediate door body 23 which opposes this, and the door edge side edge part of the 2nd door body 22, and this A locking device similar to that implemented in the first embodiment is provided between the opposite end of the intermediate door 25 adjacent to the first door. That is, in this thing, since the lock main body 4 is each assembled | attached to the intermediate door bodies 23 and 25 side, and the lock receiving body 5 is each incorporated in the 1st door body 21 and the 2nd door body 22 side, these Details are omitted. And in this Embodiment, these intermediate door bodies 23 and 25 comprise the opposing member which opposes the door-end side edge part of the door bodies 21 and 22 which comprise a hinged door.

  INDUSTRIAL APPLICABILITY The present invention can be used for opening and closing a door body that can be freely opened and closed at an opening such as an inspection port.

DESCRIPTION OF SYMBOLS 1 Door body 2 Door frame 4 Lock | rock main body 5 Lock receiving body 9 Operation shaft 10 Cam body 11 Latch 12a 2nd bullet machine 13 Actuator 14 Latch receiver 15 Emergency opening body 16 Actuator 17 Actuation plate S Gap T Operation tool

Claims (5)

  Provided in a door body pivotally supported by an opening provided on the housing side so as to be openable and closable, a latch receiver provided in a door side portion of the door body, and a facing member facing the door side end portion of the door body A latch that is freely changeable between a locking posture protruding from the facing member and an unlocking posture that is sunk and that is biased toward the locking posture side, and the latch is connected to the door end side end surface of the door body and the latch Latch changing means for changing from a locked position to an unlocked position based on a rotating operation of an operating shaft provided in a gap between the end face and the opposing member side end face by an operating tool inserted in the gap; In the door body provided with an actuating body, the latch deforming means is transformed into a working posture projecting from the opposing member side when the latching posture is unlocked from a non-operating posture where the latch is immersed in the opposing member side. On the other hand, on the door side, the latch is unlocked from the locked position An opening guide is provided to change the door body from the closed position to the initial open position in contact with the operating body in the process of changing from the non-operating position of the operating body to the operating position in time to change. At the same time, the latch deforming means is provided with a return ammunition for returning the latch deforming means to the pre-operation posture based on the release of the operation of the operating shaft by the operation tool and changing the operating body to the non-acting posture. A hinged door.   In a door body pivotally supported by an opening provided on the housing side so as to be openable and closable, on a latch receiver provided on a door tip side portion of the door body and on a facing member side facing the door edge side end portion of the door body Provided with a latch that can be transformed into a locking posture protruding from the opposing member and an unlocking posture to be immersed, and is biased toward the locking posture side, and the latch is connected to the door side of the door Latch change that changes the operating shaft provided in the gap between the end face and the end face on the opposite member facing the end face from the locked position to the unlocked position by rotating the operating shaft with the operating tool inserted in the gap. In providing the form means, the latch deforming means is provided with an operating body that changes from a non-acting posture that immerses into the opposing member side when the latch is in the locking posture to an acting posture that projects from the opposing member side when in the unlocking posture. On the door side, the latch is unlocked from the locked position An opening guide for changing the door body from the closed position to the initial open position in contact with the operating body in the process of changing from the non-operating position of the operating body to the active position in time In addition, the latch changing means is provided with a return ammunition for returning the latch changing means to the pre-operation posture based on the release of the operation by the operation tool of the operation shaft and changing the operating body to the non-acting posture. The locking device in the hinged door characterized by the above-mentioned.   3. The locking device for a hinged door according to claim 2, wherein the operating body abuts on the opening guide at a timing when the latch comes out of the latch receiver.   When the latch deforming means moves in the direction in which the operating body changes from the non-operating position to the operating position, the latch changes to the latch changing means and changes from the locked position to the unlocked position. The change from the locked posture to the unlocked posture is permitted by releasing the latch from the latch changing means, and the latch is returned by the latch changing means to change the operating body to the non-operating posture. The locking device for a hinged door according to claim 2 or 3, wherein the locking device is biased so as to return to the locking posture side through a return ammunition different from the ammunition.   On the back side of the door, it is arranged so as to be detachable toward the latch in the locked position locked to the latch receiver, and the latch in the locked position to the latch receiver can be operated from the back side of the door 5. An operating device for unlocking the door and providing an unlocked state is provided. The locking device for a hinged door according to any one of claims 2 to 4.

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