JP2017214708A - Locking/unlocking mechanism for open door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate a cumbersome work process of searching for a small key hole position in a narrow and dimly lit area near an inspection port, therefore enhancing workability, at the same time contributing toward crime prevention as no duplicate key needs to be handed over to a worker.SOLUTION: A locking/unlocking mechanism includes a lock lever R rotated between a locked position and an unlocked position for locking/unlocking an open door D, the locked position locking the open door according to a locking/unlocking operation of a lock A, and the unlocked position having the lock unlocked. The lock lever comprises: a crank 20 having a base edge part connected to the lock, rotatable in a locking and an unlocking directions integrally with a duplicate key, and being provided with a rotation regulating part 20c between the base edge part and a tip part; and a link 25 having a hook part 25b and a rotation stop part 25a, the hook part being pivotally fitted rotatably to the crank and being engaged with/disengaged from a receiver 65 on a wall body W side for locking/unlocking the open door. The lock lever is rotatingly energized in a direction to engage the hook part of the link to the receiver all the time, while the rotation stop part butts against the rotation regulating part of the crank to position and hold the hook part at a locking attitude position. When the open door is closed and the hook part of the link butts against the receiver, the hook part is engaged with the receiver for automatically locking the open door.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an opening / closing locking / unlocking mechanism suitable for locking / unlocking an opening / closing door that opens and closes an opening such as a wall inspection port constructed by arranging a plurality of panels, for example.

  In recent building constructions, multiple metal panels are arranged in a row to construct an indoor wall that is flat and flat. There is a demand for an appearance that looks like a wall at a glance where such protrusions do not protrude outward. Therefore, in some conventional door opening / unlocking mechanisms, doors such as those that use a case handle so that the door handle does not protrude significantly from the outside of the front of the door, or the door of a switchboard storage box door, etc. There is a structure in which a door handle is attached when the door is used and the door handle is removed when the door is not used (see Patent Document 1).

  However, in the conventional case using a case handle, the presence of the case handle is conspicuous from the door surface. If the door handle is detachable, if the door handle is pulled out when opening the door, it will fall off. There was a problem such as.

  Therefore, the applicant has proposed an opening and closing device that can obtain an aesthetic appearance without protrusions such as a handle for locking and unlocking operation on the outside of the opening door in the closed state, and can easily lock and unlock the opening door from the outside. . As shown in FIG. 16, this conventional door locking / unlocking mechanism is provided with a small hole 1 a for key operation that faces the joint 1 between the panels w and w ′, and the device body 2 inside the joint 1. The device body 2 includes a cylinder lock 3 provided with a key hole 3a aligned with the key operation small hole 1a, and a key bar 4 that is rotatably inserted into and removed from the key hole 3a through the key operation small hole 1a when unlocked. When the key bar 4 is inserted and rotated in the forward / reverse direction inside the cylinder lock 3, a lock lever 6 that rotates to the locking position or the unlocking position for locking the opening door 5 in conjunction with the rotation is provided. Is inserted into the key operation small hole 1a, inserted into the key hole 3a, and rotated in the forward and reverse directions inside the lock, the opening door 5 can be easily locked and unlocked from the outside.

Japanese Patent Application Laid-Open No. 9-100657

  However, in the conventional door unlocking / locking mechanism, each time the door is opened and closed, the end of the key bar 4 is inserted into the key hole 3a through the key operation small hole 1a from the narrow gap of the joint 1 to open the opening door 5. Locking and unlocking from the outside, but if the width of the gap is narrow, the tip of the key stick 4 is likely to accidentally collide with both edges of the joint 1, so that the joint 1 becomes full of scratches, and the wall is once folded. While the aesthetic appearance around the inspection port, which has been improved by flattening, deteriorates over time, it is said that if the width of the joint portion 1 is widened so that the operation of inserting the key bar becomes easy, the wall at first glance will appear when closed. There was a problem that the dent of the joint portion 1 was conspicuous vertically on the outer front surface that should look like the above, and the aesthetic appearance around the inspection port deteriorated.

Moreover, in the conventional door unlocking / unlocking mechanism, it is necessary to insert the key bar 4 into the keyhole 3a and lock the opening door 5 every time the equipment inspection port is frequently moved in and out for work. However, there is a problem in workability that it is troublesome to search and find a small keyhole position by hand in a narrow and dimly lit inspection port, because the key is used every time it enters and leaves. On the other hand, even if the key is handed over to the worker in advance and the management is entrusted to the worker, there is a problem with the crime prevention property that the key is lost or copied without permission.

  Therefore, the invention described in claim 1 opens with the keyhole 22 facing outward from the door-end side end 11c of the opening door that opens and closes the opening opened in the wall W, for example, as shown in the embodiment shown below. The lock A to be installed on the door and the lock key 19 of the lock A inserted in the keyhole 22 are rotated and opened between the locked position for locking the door and the unlocked position for releasing the lock. A lock lever R for locking and unlocking the door, and an opening guide means C for opening and guiding the door to an unlocking operation position for opening the door at an opening angle facing the keyhole 22 from the outside when unlocked. The lock lever R is a mechanism in which a base end portion 20b is connected to the lock A so as to be rotatable in the locking or unlocking direction integrally with the key 19, and is rotated between the base end portion 20b and the front end portion 20a. Crank 20 provided with a restricting portion, and crank 20 The door opening guide means includes a hook portion 25b that is pivotally attached and is engaged with and disengaged from the receiving member 65 on the wall body W side to lock and unlock the opening door, and a link 25 having a rotation stop portion 25a. C installs the receiver 65 on the wall W side at a height position where the hook portion 25b of the lock lever R abuts when the opening door is guided to the unlocking operation position. The hook 65 b of the link 25 is urged to rotate in a direction in which the hook 25 b of the link 25 is locked to the receiver 65, while the anti-rotation portion 25 a abuts against the rotation restricting portion of the crank and the hook portion 25 b is locked. When the hook 25b of the link 25 abuts against the receiving member 65 after being held in position and closed, the hook 25b is locked to the receiving member 65 to automatically lock the opening door. And

The invention according to claim 2 is the unlocking / unlocking mechanism of the opening door according to claim 1, for example, as shown in the embodiment shown below, the lock lever R unlocks the link 25 when unlocked. The link 25 is mounted with a flexible detent member, and the detent member hits against the rotation restricting portion of the crank. The link 25 is held in the unlocked posture position as it is in a controlled state.

  The invention described in claim 3 is the opening / closing locking / unlocking mechanism according to claim 1 or 2, wherein, for example, as shown in the embodiment shown below, the opening guide means C includes the receiver 65 and the receiving device 65. A mounting hole 69 provided in the mounting frame 45 that horizontally mounts the receiving tool is an elongated hole that adjusts the mounting position in one direction or both directions of the lock A and the lock lever R in either the vertical direction or the front-rear direction. It is formed.

  According to the first aspect of the present invention, at the time of locking, when the opening door is closed and the hook portion of the link of the lock lever hits the receiving device, the hook portion is automatically locked to the receiving device and the opening door is opened. The automatic lock eliminates the need for a key, so every time you go in and out of the facility's inspection port frequently for work, it is no longer necessary to perform a troublesome locking operation using the key for crime prevention. Searching for and searching for a small keyhole position in a narrow and dim place eliminates the troublesome work and improves workability, and does not pass the key to the worker, so it is necessary to lose the key or duplicate it for abuse The crime prevention property can be increased.

  According to the invention described in claim 1, when performing the locking or unlocking operation according to the opening / closing of the opening door, the unlocking / unlocking operation position is opened slightly by the opening angle at which the key can be inserted from the outside into the keyhole and operated. It can be opened and unlocked using a joint key, and there is no need to use the joint between the panels to lock and unlock the tip of the key rod through the narrow gap in the joint as in the past. Therefore, the tip of the key bar accidentally collides with both edges of the narrow gap in the joint, and the joint is not damaged, preventing the deterioration of the aesthetic appearance around the opening such as the inspection port. can do. Moreover, since the joints between the panels are not used at all, it is possible to construct a wall body in which the gaps between the joints are as close to zero as possible, and when the opening door is closed, the opening door can be used as an inspection port. Since it fits in the opening and is flush with the wall body and does not expose the keyhole from the outside, the overall aesthetics can be further enhanced.

According to the second aspect of the present invention, when the auto-lock function is turned off at the time of locking, the lock lever R rotates the link in the unlocking direction and holds the link in the standing unlocked posture position. A detent member having flexibility is mounted on the link, and the link is held in the unlocked posture position as it is in a pivoting state in which the detent member abuts against the rotation regulating portion of the crank. When the door is to be locked again after the necessary unlocking time, the link is tilted against the urging force of the urging member, and the original auto-locking posture of the original position that overlaps the tip of the crank is applied. Return to the locked position. At that time, since the detent member has flexibility, it can be easily returned to the locked position by being deformed while being bent.

  According to the third aspect of the present invention, since the door opening guide means is formed with a long mounting hole provided in the support and the mounting frame, even if it is a narrow and dimly lit inspection port, the lock and lock The mounting position with respect to the lever can be easily adjusted in the up and down direction and the front and rear direction without any trouble.

It is a side view which shows the locking / unlocking mechanism of the opening door which is this invention in (a) closed door lock state (b) door pushing-in state (c) open door state (d) door drawer lock state. It is a top view which shows the wall body to which the locking / unlocking mechanism is applied in a door closed state. It is a top view which shows the same locking / unlocking mechanism in (a) closed door lock state (b) door pushing state (c) door open state (d) door drawer lock state. It is the perspective view which shows the same locking / unlocking mechanism seeing from the inside in (a) closed door locked state (b) door pushed-in state (c) open door state (d) door drawer locked state. It is a perspective view which shows the same locking / unlocking mechanism as viewed from the outside in (a) closed door locked state (b) door pushed-in state (c) open door state (d) door drawer locked state. It is a disassembled perspective view which shows a lock and a lock lever. (A) assembly perspective view (b) plan view (c) assembly perspective view (d) side view showing the lock lever attached before the lock. It is a perspective view which shows the lock lever attached to the lock in (a) auto-lock operation state (b) auto-lock non-operation state. It is a side view which shows the lock lever attached to the lock in (a) auto-lock operation state (b) auto-lock non-operation state. It is a disassembled perspective view which shows an opening guide means. It is an assembly perspective view which shows an opening guide means. It is (a) side view (b) front view which shows an opening guide means. FIG. 6 is a side view showing the door opening guide partly broken in a state of (a) a closed door locked state, (b) a door pushing state, (c) an open door state, and (d) a door drawer locked state. It is a perspective view which shows a locking / unlocking mechanism in order of the lock | rock stage in which the receiving shaft latched to the locking | locking opening | mouth of the auto-locking procedure (a) door closing (b) sickle hook up (C) sickle lock opening. It is a perspective view which shows the said locking / unlocking mechanism in the (a) locking state (b) the state which unlocks by turning a key combination. It is a perspective view which shows the wall body to which the conventional opening / closing locking / unlocking mechanism of the door is applied in the half-open state of the door.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  As shown in FIG. 1 and FIG. 2, a wall body W to which an unlocking mechanism for an open door as an example of the present invention is applied is an indoor wall constructed by arranging panels w1, w2, w3. An intermediate panel w2 with respect to the sleeve panels w1 and w3 on both sides is formed, for example, by an opening door D that opens and closes a narrow-depth inspection port S opened in a wall body W in an indoor facility. The panels w1, w2, w3, etc. in the illustrated example each form a ridge by folding both ends of a steel plate into a crank shape, and standing joints that do not face the inside from the outside to the joint between adjacent ridges are formed. .

  As shown in FIG. 3, the sleeve panel w <b> 1 of the wall W forms a concave door stopper 10 a by bending a steel plate into a cross-sectional L shape as shown in FIG. 3, and from the door stopper 10 a. A convex attachment portion 10b is formed by bending in a cross-section L shape opposite to the above, and the flange 10 is constituted by the concave door stop portion 10a and the convex attachment portion 10b. Between the door contact portion 10a and the mounting portion 10b, a partially folded portion 10c is provided to form a concave groove 12, and a cushion material 13 is fitted into the concave groove 12 to cushion the impact at the time of the door contact. The contact portion 10a is formed.

  On the other hand, the opening door D has a door thickness of a certain standard, for example, 40 m to 45 mm, and the door end side end portion is bent into a Z-shaped cross section to form the door end side rod 11. As shown in FIG. 4, the door end side arm 11 of the opening door D includes an inner door stopper portion 11 a that faces the door stopper portion 10 a of the sleeve panel w <b> 1 when closed, and a blindfold portion parallel to the door stopper portion 11 a. 11b and the door end side lip 11c between the joint concealment part 11b and the door stop part 11a. The front end of the wooden mouth 11c is inclined toward the outside of the door D. When the door end side end 11c of the opening door D is inclined toward the outside of the opening door D that is locked and unlocked by using the key 19, the door is opened by an opening angle that allows the key 19 to be inserted into the key hole 22 from the outside and operated. Even in the half-opened state, the key 19 can be easily inserted / removed with respect to the keyhole 22 and the opening door D can be locked / unlocked. In the closed state, the hinged door D is pivotally attached to the sleeve panel w3 by a hinge 16 so that the hinged door D is placed in the inspection port S and is flush with the wall W.

  Therefore, in the opening door locking / unlocking mechanism of the present invention, as shown in FIGS. 4 and 5, a mounting hole 17 is formed in the door end side end 11c of the opening door D in accordance with the diameter of the cylinder lock 15, Locking position in which the lock A is assembled to the inside of the door end side end 11c at the position where the mounting hole 17 is opened, and the door D is locked according to the locking / unlocking operation in which the lock key A is inserted into the key hole 22 in the lock A. And a locking lever R for locking and unlocking the opening door D by rotating between the unlocking positions for releasing the lock and connecting the unlocking guide means C to the mounting portion 10b of the door side collar 11 of the sleeve panel w1. It is configured to be attached.

  Among them, the lock A includes a cylinder lock 15 and a key 19 that is inserted into and removed from the key hole 22 of the cylinder lock 15 as shown in FIGS. The cylinder lock 15 uses a key 19 to move a plurality of pin tumblers in a cylinder (outer cylinder) 18 to rotate a plug (inner cylinder), and to rotate a joint 33 inserted coaxially with the plug. It has a known structure. The cylinder 18 is provided with a rectangular connecting projection 18a at the tip of the joint 33 at the center of the bottom and a guide projection 18b at the periphery.

  The lock lever R is divided into two parts, a crank 20 in which a long metal plate is bent and formed in a staircase shape, and a sickle-shaped link 25 connected to the tip 20a of the crank 20. Positioning / holding means 30 is provided for controlling rotation while reciprocating between a locking position for locking the lock and an unlocking position for releasing the lock.

  The crank 20 is provided with a rectangular rotation restricting hole 39 that is the same as the connecting convex portion 18a of the cylinder lock 15 at the base end portion 20b and a guide hole 41 that defines a rotation range that rotates with the cylinder 18 at the periphery thereof, while the distal end portion 20a. A shaft hole 29 of the pivot 26 is provided on the base end 20a, and the base end portion 20a is connected to the lock A so as to be rotatable in the locking or unlocking direction integrally with the key 19. The crank 20 is provided with a stepped rotation restricting portion 20c by connecting a step between the tip end portion 20a and the base end portion 20b with a flat plate. The rotation restricting portion 20c has a spring hooking hole 27.

  The link 25 is formed by processing a thick and long metal plate, and a plate cam-like detent 25a having a shaft hole 28 pivotally mounted on the tip 20a of the crank 20 with the pivot 26 as a fulcrum. And a crescent-shaped hook portion 25b, and a neck is left between the rotation stop portion 25a and the hook portion 25b so as to be cut out in the width direction, thereby forming the locking port 40 in a recessed manner. The link 25 has a flat surface that includes the other side edge y parallel to the one side edge x where the locking port 40 is opened, and has a circular cam surface w and a linear flat surface on the periphery of the rotation stop portion 25a. The rotation stop surface z is continuously provided in the circumferential direction.

As shown in FIGS. 6 and 7, the positioning and holding means 30 latches the latching rib 36 c of the detent member 36 on one side edge x of the link 25, and the pivot 26 is hollow in the coil portion 35 a of the biasing member 35. The rotation center holes 27, 28, and 29 are inserted through the inside, and the link 25 is pivotally attached to the distal end portion 20 a of the crank 20 around the pivot 26.

Therefore, in the lock lever R, the positioning holding means 30 engages the spring one end 35b of the urging member 35 into the spring hooking hole 29 of the rotation restricting portion 20c, and the L-shaped spring other end 35b to the sickle-like hook portion 25b. Hooked to the other side edge y, the link 25 with respect to the crank 20, and the locking port 40 of the hook portion 25 b centered on the pivot 26 to lock to the locking shaft 75 of the receiver 65 in the counterclockwise direction in the figure. While the rotation stop surface z abuts against the plane on the rotation restricting portion 20c of the crank 20 and the locking port 40 of the hook portion 25b is locked to the latch shaft 75 of the holder 65. Hold the positioning. The lock lever R holds the link 25 of the distal end portion 20a of the crank 20 in the locked position in a tilted auto-lock posture that overlaps the distal end portion 20a of the crank 20 as shown in FIGS. 8 (a) and 9 (a). To do.

On the other hand, in the lock lever R, when the opening door D is temporarily unlocked and the inspection port S is moved in and out, the link 25 is resisted against the urging force of the urging member 35 as shown in FIG. As shown in FIG. 9B, the locking port 40 and the latching shaft 75 are rotated in the unlocking direction so as to be disengaged, and are held in the unlocking posture position standing with respect to the crank 20.

When the lock lever R thus turns off the auto-lock function during locking, the link 25 is rotated in the unlocking direction and held in the unlocked posture position in the standing state. The detent member 36 having the detent member 36 is held in the unlocked posture position in the state where the link 25 is erected as it is in the rotation restricted state where the detent member 36 abuts against the rotation restricting portion 20 c of the crank 20. When the door D is locked again after an unlocking time necessary for the inspection work, the link 25 is tilted against the pressing biasing force of the biasing member 35, and the tip 20a of the crank 2 What is necessary is just to return to the position where the lock-down position was piled up. At that time, since the detent member 36 has flexibility, it can be easily deformed while being bent and easily returned to the locked position.

  As shown in FIGS. 10, 11, and 12, the door opening guide means C is configured such that a push latch 50 is fixed in a long frame-shaped mounting frame 45, and a slider is fixed to the push latch 50 on the fixed side. 55 is engaged, and a receiving device 65 is mounted on the movable slider 55 so that the slider 55 can move together.

The mounting frame 45 lays the stopper shaft 44 horizontally between the tips of the support plate 45a and the guide plate 45b, which are opposite to each other in width size.

The slider 55 is connected to one side of the guide plates 55a and 55b facing up and down by a mounting substrate 55c, and the other side facing the mounting substrate 55c is connected by a column 55d to open the mounting port 8 and is formed in a box shape as a whole. To do. The mounting substrate 55c is provided with notched recesses 61 and 61 at the upper and lower corners of the one side edge, and a U-shaped holder 63 for gripping the stopper shaft 44 on the outer side is projected, and the inner side of the one side edge Insertion convex parts 64a and 64a are projected from the upper and lower corner edges. The slider 55 is mounted by fitting the fitting convex portions 64a and 64a into the fitting concave portions 61 and 61, attaching the attachment block 64 to the outside of the attachment substrate 55c, and projecting the spherical fitting protrusion 62 at the tip of the shaft portion on the inside. A plate 57 is attached.

The receiving device 65 is formed in a longitudinal case shape that is bent into a square shape as a whole, and is provided with a through-hole 66 of the holder 63 in the lower upright portion 65a, and in an elongated rectangular shape in the inclined portion 65b on the upper side. 70, and a latching shaft 75 is horizontally mounted between the opposed side plate portions 65c and 65c in which the receiving port 70 is opened. The receiving tool 65 has the receiving port 70 facing upward, the holder 63 is passed through the through hole 66, the upright portion 65a is fitted into the mounting block 64, and the set hole 56 is screwed into the mounting hole 79 formed in the upright portion 65a. It is fixed to the mounting block 64 and mounted on the slider 55.

The door opening guide means C fixes the push latch 50 on the back side in the mounting frame 45 to the guide plate 45 b with the front sliding guide portion 80 facing the stopper shaft 44. On the other hand, the slider 55 engages with the guide plate 45b of the mounting frame 45 between the guide plates 55a and 55b, and can linearly reciprocate in the direction of the stopper shaft 44 with the push latch 50 sandwiched between the guide plates 55a and 55b. Hold.

When the push latch 50 is closed, the slider 55, that is, the receiving member 65 mounted on the slider 55 is urged toward the stopper shaft 44 by the internal urging means, while the tip of the latch pin is locked to the locking portion. As shown in FIG. 13A, the initial state is locked to the first latch position. Therefore, when the push latch 50 is closed, as shown in FIG. 13 (b), when the slider 55 is pushed against the internal biasing means, the tip of the latch pin moves, as shown in FIG. 13 (c). In addition, the slider 55 is stopped and locked at the second latch position retracted by a certain stroke L from the first latch position. Next, when the slider 55 which is now in the second latch position is pushed in again, the slider 55 is moved forward by the restoring force of the internal urging means as shown in FIG. It protrudes only, and is configured to stop and lock at the first latch position engaged with the stopper shaft 44 by the holder 63.

  Therefore, in the door opening guide means C, as shown in FIG. 3 (d), the push latch 50 moves the receiving device 65 mounted on the slider 55 to the first latch position and the second latch position by simply pressing each time. A stroke L for linearly reciprocatingly sliding between them is set in accordance with an opening angle facing the keyhole 22 from the outside.

  Further, as shown in FIGS. 1 and 2, the door opening guide means C is directed toward the lock A assembled with the receiving port 70 of the receiving device 65 mounted on the slider 55 inside the door end side end 11c of the opening door D. The height direction is adjusted to the height position of the lock lever R in a state where the link 25 overlaps with the mounting portion 20a at the tip of the crank 20, and in the depth direction, when the receiving tool 65 is in the first latch position, The lock lever R rotated to the locking position of the opening door D is attached to the attachment portion 10b of the door side collar 10 of the sleeve panel w1 at a position where the lock lever R is engaged with the latch shaft 75 of the support 65.

As shown in FIG. 12, the door opening guide means C has an attachment hole 69 provided in the attachment frame 45 and an attachment hole 77 provided in the receiver 65. It is formed with a long hole to be adjusted. Therefore, in the illustrated example, the mounting position can be easily adjusted in the vertical direction and the front-rear direction with respect to the lock A and the lock lever R even if the inspection port S is narrow and dim.

  Therefore, in the present invention, when the door is closed, the link 25 of the lock lever R is latched as shown in FIGS. 1 (a), 2 (a), 3 (a), 4 and 5 (a). The holder 65 is locked by stopping at the second latch position to be engaged with the shaft 75.

  Therefore, in the present invention, when the door is closed, as shown in FIG. 14A, when the opening door D is closed and pushed in, the hook portion 25b of the link 25 of the lock lever R comes into contact with the receiving member 65. As shown in FIG. 14 (b), the link 25 rotates upward with the pivot 26 as a fulcrum, and the hook portion 25b automatically hooks and stops on the support 65 as shown in FIG. Because the lock is automatically locked and the key is not required, the troublesome locking operation using the key for security is not required every time the inspection port S of the equipment is frequently moved in and out for work. In this narrow and dim situation, the troublesome work of searching for and searching for a small keyhole position by hand is eliminated, and the workability is improved.In addition, the key is not given to the operator, so the key can be lost or duplicated without permission. Preventing abuse It can be higher sex.

  After that, when opening the inspection port S to check the equipment, the door end of the opening door D is pushed in, and as shown in FIG. 5 (b), it protrudes by a certain stroke L from the second latch position. Stop at the first latch position and lock to this position. At the same time, the opening door D is pushed by the slider 55 based on the spring biasing force of the internal biasing spring 50, and automatically rotates in the opening direction as shown in FIGS.

  At that time, in the present invention, the push latch 50 that pushes and pushes the opening door D in the opening direction is guided by the guide means, and the slider 55 linearly reciprocates between the first latch position and the second latch position. Since the sliding stroke L is set in accordance with the door thickness of the opening door D, as shown in FIGS. 1B, 7 and 8, the opening door D is a spring biasing force of the biasing spring. Is automatically rotated in the opening direction by being pushed by the slider 55, but stops at the locking / unlocking operation position rotated to the opening angle corresponding to the door thickness, and the lock lever R is moved to the locking / unlocking operation position. The link 25 can be locked in a locked state in which the hook portion 25 b of the link 25 is engaged with the latch shaft 75 of the slider 55.

  Therefore, from the outside of the inspection port S, the key 19 is inserted into the key hole 22 of the cylinder lock 15 and the lock lever R is rotated 90 degrees integrally with the plug (inner cylinder) in the unlocking direction in the cylinder (outer cylinder) 18. Then, the slider 55 is removed from the holder 63 and unlocked, thereby unlocking the opening door D. Then, it is sufficient to operate the door to the door side 11 and further open the opening door D as shown in FIGS. 8 and 9.

  Thereafter, when the inspection work of the equipment is finished from the outside of the inspection port S and the door D is closed and locked from the outside of the inspection port S as it is, FIG. 1 (d), FIG. 3 (d), FIG. 5), as shown in FIG. 5 (d), once the opening door D is pushed back from the outside to the locking / unlocking operation position opened by the opening angle facing the keyhole 22, the keyhole of the cylinder lock 15 is unlocked at the locking / unlocking operation position. 22, the key 19 is inserted, and this time, the lock lever R is rotated 90 degrees together with the plug (inner cylinder) in the locking direction, so that the latch shaft 75 of the holder 65 and the locking port 40 of the link 25 are connected. The lock lever R is hooked on the receiving member 65 by locking.

  In the illustrated embodiment described above, the projections such as the handle and the handle are not provided at all on the outside of the wall body W for the locking / unlocking operation. You can get a beautiful aesthetic that looks like a part of. In addition, since the joint portion between the panels w1, w2, and w3 is not used at all, it is possible to construct a wall body in which the gap between the joint portions is made as narrow as possible, and the aesthetics can be further enhanced.

  On the other hand, in the illustrated embodiment, when the door D is unlocked, the door D is rotated in the locked state by the opening angle facing the keyhole from the outside, and the lock A with the keyhole facing the outside is locked and unlocked using the key. It is only necessary to use the joint between the panels so that the operation of locking and unlocking the tip of the key stick through the narrow gap in the joint is not necessary. It is possible to prevent the aesthetic appearance around the inspection port from deteriorating without causing the joint portion to be damaged by colliding with both edges.

A Lock C Opening guide means D Opening door R Lock lever W Wall body 10/11 竪 框 11c Door end side end 15 Cylinder lock 19 Lock key 20 Crank 25 Link 30 Positioning holding means 45 Mounting frame 50 Push latch 65 Receiving tool

Claims (3)

Open the door according to the lock installed on the door with the keyhole facing outward from the door end side mouth of the opening door that opens and closes the opening established in the wall, and the lock key unlocked by inserting the lock key of the lock into the keyhole The lock lever that pivots between the unlocking position that locks the door and the unlocking position that unlocks the door to unlock the door, and the unlocking operation position that opens the door by the opening angle that faces the keyhole from the outside when unlocking An opening door locking and unlocking mechanism comprising an opening guide means for guiding the opening door,
The lock lever is
A crank having a base end connected to the lock so as to be rotatable in the locking or unlocking direction integrally with the key and having a rotation restricting portion between the base end and the tip, and pivotally attached to the crank. And a hook part that locks and unlocks the opening door by engaging and disengaging it with the wall-side support, and a link having a detent part.
When the door guide means guides the opening door to the unlocking operation position, the door is installed on the wall body side at a height position where the hook portion of the lock lever abuts,
The lock lever is
Normally, the bearing is urged to rotate in the direction in which the hook portion of the link is locked, while the detent portion abuts against the rotation restricting portion of the crank so that the hook portion is positioned at the locking posture position. Holding and closing the opening door, and when the hook portion of the link hits the receiving member, the hook portion is locked to the receiving member to automatically lock the opening door, mechanism. The lock lever, when unlocked, pivots the link in the unlocking direction to hold the link in a standing unlocked posture position, and attaches a flexible detent member to the link. 2. The unlocking / unlocking of the opening door according to claim 1, wherein the link is held in an unlocking posture position in an upright state in a state in which the rotation is restricted against the rotation restricting portion of the crank. mechanism. The door opening guide means attaches the mounting hole provided in the receiving frame and the mounting frame that horizontally mounts the receiving box to the lock and the lock lever in either one of the up-down direction and the front-rear direction or in both directions. 3. The door unlocking / unlocking mechanism according to claim 1 or 2, characterized in that it is formed by a long hole for adjusting the position.

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