JP2017082464A - Lock device with emergency time unlocking mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To implement improvement of appearance of a door, easy fitting to the door, and excellent operability.SOLUTION: A lock device R comprises: a housing 1; a lock case 2 that is rotatably held inside the housing 1; a cylinder lock 3 that is held inside the lock case 2 so as to be incapable of rotating; and a solenoid 6 that is electrically connected to an earthquake sensor 8 and includes a plunger 61 arranged so as to be capable of advancing/retreating into/from a shaft insertion hole 12 of the housing 1 and a shaft insertion part 22 of the lock case 2. Normally, locking or unlocking of a door is performed by operation of a key at the cylinder lock 3. When an earthquake occurs, the solenoid 6 automatically releases a locked state of the lock case 2 inside the housing 1, allowing rotation operation at an operation knob part 21 to unlock the door.SELECTED DRAWING: Figure 1

Description

  The present invention is used for a storage for storing articles necessary for the occurrence of an earthquake. Normally, the door of the storage is held in a locked state, and the door is automatically unlocked when the earthquake occurs. The present invention relates to a locking device with an emergency unlocking mechanism that can be opened and closed.

In recent years, in various offices and public facilities, various disaster supplies are stored in a disaster prevention warehouse in preparation for the occurrence of an earthquake.
In this case, the disaster prevention article needs to be securely and safely held in the disaster prevention warehouse, and therefore, the door of the disaster prevention warehouse is usually locked with various locks. Therefore, the door of the disaster prevention warehouse is locked, and only the key manager can open the door.
In addition, the key of such a disaster prevention warehouse may be stored in a small storage box installed on the wall next to the door of the disaster prevention warehouse or on the wall of the management room in a different location from the disaster prevention warehouse. To ensure that the key is securely and securely held in the vault, the vault door is locked and only the key manager can open the door.
In any case, when such a key is managed, when an earthquake occurs and you try to take out disaster supplies from the disaster prevention warehouse, or when you take out the key of the disaster prevention warehouse from the key storage If the manager with the key does not immediately rush to the disaster prevention warehouse or management room, the disaster prevention warehouse or key storage cannot be opened, and the disaster prevention supplies and keys cannot be taken out. If the manager is missing or the key is lost, the disaster prevention warehouse or the key storage door cannot be opened unless it is destroyed.
Therefore, in the event of an earthquake, a locking device has been proposed that can automatically open and close the door of an article storage such as a disaster prevention warehouse or key storage to open and close the door. Patent Document 1 discloses a locking mechanism.

The lock mechanism of this document 1 accumulates a repulsive force when an operation force is applied from the outside, and a lock body that operates between a lockable position and an unlocked position when the storage door is closed, and operates the lock mechanism. The urging means for urging the lock body in the unlocked position direction by the repulsive force when the force is released, the restricting means for constraining the urging means in a state where the repulsive force is accumulated, and the restraining state of the restricting means is predetermined. And an actuator (plunger, solenoid) that is released when a disaster occurrence signal transmitted from the device (seismic device) is received.
By mounting such a lock mechanism on the door of the storage, the door of the storage is automatically unlocked when an earthquake occurs, and equipment and keys can be smoothly taken out from the storage.

JP 2012-52362 A

However, the conventional lock mechanism has the following problems.
(1) This lock mechanism is exclusively used for locking and unlocking the door. A separate handle is required to open and close the door, and the area occupied by each part of the lock mechanism, the handle, etc. increases in the door. Each of these parts appears on the surface of the door, which may impair the appearance of the door and limit the degree of freedom in designing the door. Not suitable.
(2) Since a handle is required separately from each component of the lock mechanism, the installation is complicated accordingly, and the waterproof parts of the door are increased, and it is difficult to ensure sufficient waterproof performance.
(3) If the handle is a general lever-type handle, the handle protrudes from the door surface and gets in the way. Instead, the handle is of a type that is housed in a handle case embedded in the door surface. Then, it is difficult for a user unfamiliar with such a handle to understand the handle operation and to obtain a smooth operation.

  The present invention solves such a conventional problem, and in this type of locking device with an emergency unlocking mechanism, a handle for opening and closing the door is not required, and each component of the locking device in the door is not required. The area occupied on the door surface of each part is reduced as much as possible, and the appearance of the door is improved, the degree of freedom in designing the door is increased, and the device configuration is simplified. It can be easily attached to the door, the waterproof part of the door is reduced, the waterproof performance is improved, and a simple operation part instead of the handle is integrated, so that the door can be opened and closed smoothly with a simple operation. The purpose is to do.

In order to achieve the above object, the present invention provides:
A lock device with an emergency unlocking mechanism that automatically unlocks and locks the door of the article storage box when an earthquake occurs,
(A) a substantially cylindrical housing having a flange projecting toward the outer circumferential direction at one end and having a shaft insertion hole on the outer circumferential surface;
(B) A substantially cylindrical shape having an operation knob portion fitted and held rotatably in the housing, projecting in the outer peripheral direction at one end, and a shaft insertion portion communicating with the shaft insertion hole of the housing on the outer peripheral surface. And a lock case
(C) A lock that is non-rotatably fitted and held in the lock case, has a key hole at one end, protrudes from the other end of the lock case at the other end, and can be rotated by operating a key inserted into the key hole. A cylinder lock having a shaft, and a clasp attached rotatably to the lock shaft protruding from the other end of the lock case together with the lock shaft;
(D) It is attached to the housing via a bracket and is electrically connected to the seismic sensing device, and the plunger is disposed so as to be able to advance and retreat in the shaft insertion hole of the housing and the shaft insertion portion of the lock case. The plunger is inserted into the shaft insertion hole of the housing and the shaft insertion portion of the lock case to enter a locked state that restricts the movement of the lock case in the rotation direction within the housing, and receives a signal from the earthquake sensing device Sometimes the plunger is retracted from the shaft insertion portion of the lock case to enter an unlocked state allowing movement of the lock case in the rotation direction within the housing;
With
(E) a mounting hole through which the housing can be inserted is formed at a predetermined mounting position of the door, and is fixedly inserted into the mounting hole;
(F) Normally, the door is locked or unlocked by engaging or releasing the stopper with the receiving part attached to the predetermined attachment position on the storage side by operating the key of the cylinder lock. When the earthquake occurs, the locked state of the lock case is automatically released in the housing by the operation of the earthquake sensing device and the solenoid, and the lock case is rotated by the operation knob portion at one end of the lock case. The door is unlocked by releasing the engagement between the clasp and the receiving portion by rotating with the cylinder lock, and the door is opened and closed using the operation knob portion as a door knob.
This is the gist.

In addition, this lock device is provided with the following components in each part.
(1) Between the housing and the solenoid, in conjunction with the advance / retreat operation of the plunger of the solenoid with respect to the shaft insertion portion of the lock case, a locked state that restricts the movement of the lock case in the rotation direction in the housing and the restriction An indicator for switching and displaying the unlocked state for canceling is provided.
(2) A sealing material is interposed between the flange of the housing inserted and fixed in the mounting hole of the door and the periphery of the mounting hole, and between the inner peripheral surface of the housing and the outer peripheral surface of the lock case, and Sealing materials are interposed between the inner peripheral surface of the lock case and the outer peripheral surface of the lock shaft of the cylinder lock, so that water can enter from between the mounting hole, the housing, the lock case, and each part of the cylinder lock. Is prevented.
(3) Between the housing and the lock case, the lock case is guided in the housing so as to be rotatable between a position where the stopper and the receiving portion are engaged together with the cylinder lock and a position where the engagement is released. A guide is provided.
(4) A positioning engagement portion for aligning the shaft insertion hole of the housing and the shaft insertion portion of the lock case is provided between the housing and the lock case.

  The locking device with an emergency unlocking mechanism of the present invention comprises the above-mentioned configurations (a) to (d), and (e) a mounting hole through which the housing can be inserted is formed at a predetermined mounting position of the door. It is inserted into and fixed to the hole, and (f) usually by engaging or releasing the stopper with the receiving part attached to the predetermined attachment position on the storage side by operating the key of the cylinder lock. When the door is locked or unlocked, and the earthquake detection device and solenoid are activated, the lock case is automatically unlocked in the housing when an earthquake occurs, and the lock case is turned into a cylinder by rotating the operation knob at one end of the lock case. The door is unlocked by releasing the engagement between the clasp and the receiving part by rotating with the lock, and the door is opened and closed by using this operation knob as the door knob. To handle separately The area occupied by each part of the locking device in the door is made as small as possible, and the parts appearing on the surface of the door of each part are also reduced, improving the appearance of the door and freedom of door design. In addition to simplifying the device configuration, it can be easily attached to the door, and the waterproof part can be improved by reducing the waterproof part of the door. Since the simple operation portion (operation knob portion) is integrally provided, the door can be opened and closed smoothly by a simple operation of the operation portion.

The figure which shows the structure of the locking device with an emergency unlocking mechanism in one embodiment of this invention ((a) is a partially omitted front view (b) is a side sectional view (c) is a rear view) The figure which shows especially the structure of a housing of the same locking device ((a) is a front view (b) is a plan view (c) is a bottom view (d) is a side sectional view)) The figure which shows especially the structure of a lock case of the same locking device ((a) is a front view (b) is a plan view (c) is a bottom view (d) is a rear view (e) is a side sectional view)) The figure (side view) which shows the structure of the cylinder lock of the lock device in particular The figure which shows the structure of the joint which comprises the locking shaft of the cylinder lock of the locking device especially (side sectional drawing) The figure which shows the structure of the clasp attached to the lock shaft of the cylinder lock of the lock device in particular (front view) The figure which shows especially the structure of the solenoid of the same lock device (side view) The figure which shows the structure of the bracket for attaching especially a solenoid of the same locking device to a housing ((a) is a front view (b) is a side sectional view) The figure which shows the structure of the sealing material (packing) used for waterproofing of the locking device (front view)

Next, embodiments for carrying out the present invention will be described with reference to the drawings.
FIG. 1 shows a lock device with an emergency unlocking mechanism that can automatically open and close a door of an article storage box when the door of the article is locked by an automatic release.
This locking device can be applied to doors of various storages that store various items such as disaster prevention warehouses that store disaster prevention supplies and small storages that store keys of disaster prevention warehouses. Then, it is illustrated as a lock device applied to a door of a small storage for storing a key or the like. Here, only a part of the door is simply indicated by a two-dot chain line in the storage, but the box body having an opening on the front, the opening edge of the box body, in this case, the hinge on the right edge The door is pivotably mounted and includes a door that opens and closes the opening of the box body. For example, the door is installed on a wall surface of a disaster prevention warehouse or a wall of a management room in a place different from the disaster prevention warehouse. This locking device is attached at the center in the vertical direction of the left side (rotating side) as a predetermined position of the door, and the locking device (the clasp of the lock) at the center of the left side of the opening as the predetermined position of the box body. ) Can be engaged.

  As shown in FIG. 1, the locking device R with an emergency unlocking mechanism includes a substantially cylindrical housing 1 having a flange 11 projecting toward an outer peripheral direction at one end and a shaft insertion hole 12 on an outer peripheral surface. The cylinder 1 has an operation knob portion 21 that is rotatably fitted and held in the housing 1 and projects in the outer peripheral direction at one end, and a shaft insertion portion 22 that communicates with the shaft insertion hole 12 of the housing 1 on the outer peripheral surface. Operation of the lock-shaped lock case 2 and the lock case 2 fitted and held in the lock case 2 so as not to rotate, having a key hole 30 at one end, protruding from the other end of the lock case 2 at the other end, and being inserted into the key hole 30 The cylinder lock 3 having a lock shaft 31 that can be rotated by the above-mentioned structure, a lock 4 that is rotatably attached to the lock shaft 31 protruding from the other end of the lock case 2 together with the lock shaft 31, and the housing 1 via the bracket 5 Seismic detection The plunger 61 is electrically connected to the device 8 so that the plunger 61 can be moved forward and backward in the shaft insertion hole 12 of the housing 1 and the shaft insertion portion 22 of the lock case 2, and the plunger 61 is normally connected to the shaft insertion hole 12 and the lock of the housing 1. The plunger 61 is inserted into the shaft insertion portion 22 of the case 2 to be in a locked state in which the movement of the lock case 2 in the housing 1 is restricted in the rotational direction. A solenoid 6 which is retracted from the shaft insertion portion 22 and is in an unlocked state allowing the movement of the lock case 2 in the housing 1 in the rotational direction is provided between the housing 1 and the solenoid 6. In conjunction with the forward / backward movement of the lock case 2 with respect to the shaft insertion portion 22, the lock state that restricts the movement of the lock case 2 in the rotation direction within the housing 1 and the restriction are released. An indicator 7 for selectively displaying the unlock state, and includes a.

As shown in FIG. 2, the housing 1 is made of zinc die casting, the main body 10 is formed in a substantially cylindrical shape, and a flange 11 is formed at one end of the outer peripheral surface of the main body 10 in a vertical direction perpendicular to the axial direction of the housing 1. The long rectangular shape is rounded, and the shaft insertion hole 12 is provided at a substantially upper center of the outer peripheral surface of the main body 10 with a predetermined clearance to reduce the load on the plunger 61 of the solenoid 6. It is formed in a long hole shape that is slightly longer than the outer diameter of 61. In addition, the main body 10 is formed with a shallow groove 13 at the inner peripheral edge of the opening at one end of the inner peripheral surface so that the rear end of the outer peripheral surface of the operation knob 21 at one end of the lock case 2 can be fitted. A shallow groove 14 is formed on the inner peripheral edge of the opening at the other end so as to be engageable with a retaining ring 201 attached to the other end of the lock case 2 to form a stepped portion. Further, on the rear surface of the flange 11, bosses 15, 16, 17, and 18 are integrally formed on the left and right sides of the upper part and the center and the lower part of the center, respectively. The upper central boss 15 is integrally formed between the flange 11 and the outer peripheral surface with the lower side extending to the outer peripheral surface of the main body 10 of the housing 1. Screws are cut from the rear end surface to the front end surface to form the screw holes 160, 170, and 180 in the upper left and right sides and the lower central bosses 16, 17, and 18. The rear end surface and the front end surface are penetrated, and a transparent cover 151 made of acrylic is attached to the rear end surface in a watertight manner to form a display window 70 of the indicator 7 described later.
Further, the housing 1 is disposed between the housing 1 and a lock case 2 to be described later, and the position where the lock case 4 and the stopper 4 are engaged with the cylinder lock 3 in the housing 1 and the engagement is released. A guide G for guiding the stopper 4 that is locked by the cylinder lock 3 and is engaged with the receiving part to the receiving part so as to be rotatable to the release position. It has a part of the guide G which comprises. In this case, the guide G is provided on one side of the inner peripheral surface of the housing 1 or the outer peripheral surface of the lock case 2 with a predetermined angle, in this case, a 90 ° arcuate guide groove G1, and on the other side, the guide groove A guide protrusion G2 that can slide on G1, and here, a groove in the inner peripheral edge of the opening on one side (in this case, the left side) of the lower half side on one end side of the inner peripheral surface of the housing 1 The guide groove G1 is formed at an angle slightly larger than 90 ° in parallel with the rear side. The housing 1 may be provided with a guide protrusion G2 instead of the guide groove G1.
Further, the housing 1 includes a positioning member constituting a positioning engagement portion P for aligning the shaft insertion hole 12 of the housing 1 and the shaft insertion portion 22 of the lock case 2 between the housing 1 and the lock case 2. Part of the joint P is included. In this case, the positioning engagement portion P includes a positioning concave portion P1 formed on one of the inner peripheral surface of the housing 1 or the outer peripheral surface of the lock case 2, and a positioning convex portion P2 formed on the other. A positioning recess P1 is formed as a hemispherical recess in the lower center of the inner peripheral surface of the other end on the slightly back side (opening edge side of one end). The housing 1 may be provided with a positioning projection P2 instead of the positioning recess P1.

As shown in FIG. 3, the lock case 2 is made of zinc die casting, the main body 20 is formed in a substantially cylindrical shape, and an operation knob portion 21 is perpendicular to the axial direction of the lock case 2 at one end of the outer peripheral surface of the main body 20. Are formed in a circular shape in front view and in a circular shape in rear view, and are formed in a tapered shape that gradually increases in diameter from the front surface to the rear surface in side view, and are formed in a flange shape that projects the rear end portion in the outer peripheral direction. The shaft insertion part 22 is formed in a bottomed long hole shape with a predetermined clearance in order to reduce the load on the plunger 61 of the solenoid 6 and at the front and back, which is slightly larger than the outer diameter of the plunger 61. Is done. Further, on this outer peripheral surface, a circumferential groove is formed in the axial intermediate portion and an O-ring mounting portion 23 is provided, and a groove is formed in the circumferential direction in the vicinity of the rear end portion, and a retaining ring 201 is fitted. The Note that a plurality of convex portions 211 are formed on the outer peripheral surface of the operation knob portion 21 in the circumferential direction at predetermined intervals in the axial direction, and these prevent slipping. Further, the inner peripheral surface of the main body 20 is formed with a large diameter on one end side so that the main body 3B (cylinder case) of the cylinder lock 3 can be fitted to the outer shape of the main body 3B. Thus, the cross section is formed in a substantially oval shape, whereby the cylinder lock 3 is prevented from rotating in the lock case 2 and cannot be rotated. Further, the other end side of the inner peripheral surface of the main body 3B is formed to have a small diameter so that the lock shaft 31 of the cylinder lock 3 can be fitted and rotated in accordance with the outer shape of the lock shaft 31. A groove is formed in the circumferential direction on the rear side of the inner peripheral surface, and an O-ring mounting portion 24 is provided. In this case, as shown in FIGS. 4 and 5, the lock shaft 31 extends from the rotary shaft 311 protruding from the rear end of the body 3 </ b> B of the cylinder lock 3 and the rotary shaft 311. It consists of a joint 32 extending upward. The joint 32 is made of zinc die-casting, has a flange 321 that can be brought into contact with the rear end surface of the cylinder lock 3 at one end, a large-diameter fixing portion 322 that can be externally fitted to the rotating shaft 311 of the cylinder lock 3, and a fixing portion. A small-diameter screw portion 324 is connected to the rear end of 322 via a square-shaped clasp attachment portion 323. Through holes 312 and 325 communicating with each other are formed in the outer peripheral surface of the rotating shaft 311 of the cylinder lock 3 and the outer peripheral surface of the fixing portion 322 of the joint 32, and spring pins 33 (see FIG. 1) are formed in these through holes 312 and 325, respectively. And the joint 32 is connected to the rotating shaft 311 of the cylinder lock 3. The fixed portion 322 of the joint 32 that is externally fitted to the rotary shaft 311 of the cylinder lock 3 is rotatably fitted to the other end portion of the inner peripheral surface of the lock case 2, and the stopper mounting portion 323 of the joint 32 is inserted. The screw case 324 protrudes from the other end of the lock case 2 to the outside. In this way, the lock case 2 is rotatably fitted and held in the housing 1, and the lock case 2 as a whole will be described later by rotating the operation knob portion 21 at one end in the groove 13 at one end of the housing 1. It can be rotated in the angle range. An arrow indicating the rotational operation direction of the lock case 2 is additionally provided around the opening on the front surface of the housing 1 (see FIG. 2).
Further, the lock case 2 includes a position where the lock case 2 and the receiving portion are engaged with the lock case 2 together with the cylinder lock 3 in the housing 1 between the housing 1 and the lock case 2 described above. A guide for guiding the stopper 4 that is locked by the cylinder lock 3 and engaged with the receiving part to the receiving part so as to be rotatable to the releasing position. A part of the guide G constituting the G is included. In this case, the guide G is provided at a predetermined angle formed in one of the inner peripheral surface of the housing 1 or the outer peripheral surface of the lock case 2 as described above, in this case, an arc guide groove G1 of 90 °, and the other. The guide projection G2 is slidable on the guide groove G1, and here, the guide projection G2 is adjacent to the operation knob portion 21 on one end side of the outer peripheral surface of the lock case 2 and on the lower portion on the rear side. Provided. The lock case 2 may be provided with a guide groove G1 instead of the guide protrusion G2.
Further, the lock case 2 includes a positioning engagement portion P for aligning the shaft insertion hole 12 of the housing 1 and the shaft insertion portion 22 of the lock case 2 between the housing 1 and the lock case 2 described above. It has a part of the positioning engaging part P which comprises. In this case, the positioning engagement portion P is composed of a positioning concave portion P1 formed on one of the inner peripheral surface of the housing 1 or the outer peripheral surface of the lock case 2, and a positioning convex portion P2 formed on the other. A bottomed hole 25 is formed in the lower center of the outer peripheral surface of the outer peripheral surface of the outer peripheral surface at the slightly lower side (opening edge side of one end). As shown, a detent ball 27 is provided via a spring 26, and a positioning convex portion P <b> 2 including a spring 26 and a detent ball 27 urged toward the outer peripheral direction by the spring 26 is provided. The lock case 2 may be provided with a positioning concave portion P1 instead of the positioning convex portion P2.

The cylinder lock 3 is a general-purpose product, and as shown in FIG. 4, a main body 3B having a key hole 30 at one end, and a rotating shaft 311 that protrudes from the other end of the main body 3B and can be rotated by operating the key of the main body 3B. The main body 3B has a substantially cylindrical shape and is formed in a flat shape on both the left and right sides on the rear side thereof, and has a substantially oval cross section. The rotary shaft 311 is connected to the joint 32 (see FIG. 5) as described above. The lock shaft 31 is extended. In this way, the cylinder lock 3 is fitted and held in the lock case 2 so as not to rotate.
As shown in FIG. 6, the stopper plate 4 is formed in a long and thin plate shape having a predetermined length with one end being semicircular and rounded at both corners of the other end, as shown in FIG. A square mounting hole 40 that can be fitted into the gold mounting portion 323 is formed. The stopper plate 4 is inserted into the attachment hole 40 through the lock shaft 31 protruding from the other end of the lock case 2, and the attachment hole 40 serves as a stopper attachment portion 323 of the lock shaft 31 (see FIGS. 5 and 1). The nut 41 (see FIG. 1) is fastened and attached to the threaded portion 324 of the lock shaft 31. In this way, the stopper plate 4 is rotatably attached to the lock shaft 31 protruding from the other end of the lock case 2 together with the lock shaft 31. As shown in FIG. 1 (a), the stopper plate 4 has a position that extends horizontally in the left direction when viewed from the front surface by the operation of a key inserted into the key hole 30. 90 °, where the position extending vertically upward is the unlocked position (the position where the engagement can be released with respect to the receiving portion of the storage (box body side)). Rotated in angular range.

As shown in FIG. 7, the solenoid 6 includes a main body 60 and a plunger 61 that protrudes from one end of the main body 60 and is driven back and forth. The solenoid 6 is electrically connected to the earthquake sensing device 8 (see FIG. 1) via wiring. Connected. The solenoid 6 is attached to the housing 1 via a bracket 5. In this case, as shown in FIG. 8, the bracket 5 has substantially the same outer shape as the flange 11 of the housing 1, and the large hole 510 and the flange 11 through which the main body 10 of the housing 1 can be inserted together with the boss 15 at the upper center of the flange 11. A fixed part 51 having three small holes 511 through which the bosses 16, 17, 18 at the upper left and right sides and the lower center of the upper part can be inserted, and the upper part of the fixed part 51 is extended to substantially the same length as the solenoid 6, An attachment portion 52 having screw insertion holes 521 and 522 for attaching the solenoid 6 to one end and the other end is provided. The small holes 511 of the fixing portion 51 are formed so as to be recessed from the front side to the rear side so that the respective bosses 16, 17, 18 of the housing 1 can be fitted. In this way, the solenoid 6 is attached to the attachment portion 52 of the bracket 5 via the attachment screw 62 (see FIG. 7), and the assembly of the housing 1, the lock case 2 and the cylinder lock 3 is inserted into the large hole 510 of the fixing portion 51. The bosses 16, 17, and 18 of the housing 1 are aligned with the small holes 511, and the plunger 61 is positioned behind the display window 70 of the housing 1 and the shaft insertion hole 12 of the housing 1 and the shaft of the lock case 2. The bracket 5 is disposed in the insertion portion 22 so as to be able to advance and retract. When the locking device R is attached to a predetermined attachment position of the door, an attachment screw 53 (see FIG. 1) is passed through each hole 511 of the bracket 5. , A predetermined mounting position of the door together with the assembly of the housing 1, the lock case 2 and the cylinder lock 3 by being fastened to the screw holes 160, 170 and 180 of the bosses 16, 17 and 18. It is fixed. Then, the solenoid 6 and the earthquake detection device 8 are electrically connected, and the plunger 61 is normally inserted into the shaft insertion hole 12 of the housing 1 and the shaft insertion portion 22 of the lock case 2 so that the lock case 2 is contained in the housing 1. In a locked state that restricts the movement of the lock case 2, the plunger 61 is retracted from the shaft insertion part 22 of the lock case 2 when receiving a signal from the earthquake detection device, and the lock case 2 is rotated in the rotation direction within the housing 1. An unlocked state that allows movement is set.
The power source supplied to the solenoid 6 and the earthquake detection device 8 may be a commercial power source. However, a battery is used here, and wiring to the power source is unnecessary.

  As shown in FIG. 1, the indicator 7 includes a display window 70 of the housing 1 and a display member 71 attached to the plunger 61 of the solenoid 6 behind the display window 70. In this case, the display member 71 is made of ABS resin and has a cylindrical shape having an outer diameter that can be disposed between the flange 11 and the outer peripheral surface of the housing 1 and a height that is slightly larger than twice the height of the display window 70. The plunger 61 is inserted into the upper half 711 of the outer peripheral surface through the shaft insertion hole 12 of the housing 1 and the shaft insertion portion 22 of the lock case 2, and the movement of the lock case 2 in the rotation direction within the housing 1. Is applied to the lower half 712 of the outer peripheral surface, and is applied to the lower half 712 of the outer peripheral surface to release the restriction, and the upper half 711 is in the locked state. A predetermined position (height) on the outer peripheral surface of the plunger 61 so that the lower half 712 can be opposed to the display window 70 when unlocked so that the height can be opposed to the display window 70. ). In this way, the indicator 7 is locked between the housing 1 and the solenoid 6 in a locked state (red) that regulates the movement of the lock case 2 in the housing 1 in conjunction with the forward and backward movement of the plunger 61 of the solenoid 6. ) And an unlocked state (blue) for releasing the restriction.

  In addition, this locking device R includes a sealing material S1 for sealing between the flange 11 of the housing 1 inserted and fixed in the door mounting hole and the periphery of the mounting hole in order to provide a waterproof function, and the housing. 1 for sealing between the inner peripheral surface of 1 and the outer peripheral surface of the lock case 2, and for sealing between the inner peripheral surface of the lock case 2 and the outer peripheral surface of the lock shaft 31 of the cylinder lock 3. The sealing material S3 is prepared. In this case, as shown in FIG. 9, the sealing material S1 is a flat plate having the same outer shape as the rear surface of the flange 11 of the housing 1 by a synthetic rubber material having excellent water resistance and weather resistance, and the main body 10 of the housing 1 is in the center. A large hole S10 that can be inserted together with the boss 15 at the upper center of the flange 11 can be inserted into the bosses 16, 17, and 18 at the left and right sides of the upper part of the flange 11 and the center of the lower part at the center of the lower part. The packing S1 is formed by drilling three small holes S11. The packing S1 is interposed between the flange 11 of the housing 1 and the periphery of the mounting hole when the locking device R is attached to the door. Is done. The sealing material S2 is an O-ring made of a synthetic rubber material excellent in water resistance and weather resistance, and can be mounted on the O-ring mounting portion 23 on the outer peripheral surface of the lock case 2. The O-ring S2 is formed by the housing 1 and the lock case 2 Is assembled to the O-ring mounting portion 23 on the outer peripheral surface of the lock case 2 and is interposed between the inner peripheral surface of the housing 1 and the outer peripheral surface of the lock case 2 (see FIG. 1). . The seal material S3 is an O-ring made of a synthetic rubber material having excellent water resistance and weather resistance, and can be mounted on the O-ring mounting portion 24 on the inner peripheral surface of the lock case 2. The O-ring S3 is composed of the lock case 2 and the cylinder. When the lock 3 is assembled, the lock 3 is mounted on the O-ring mounting portion 24 on the inner peripheral surface of the lock case 2 and is interposed between the inner peripheral surface of the lock case 2 and the outer peripheral surface of the lock shaft of the cylinder lock 3. (See FIG. 1). In this way, water can be prevented from entering between the mounting hole, the housing 1, the lock case 2, and the cylinder lock 3.

  The locking device R has such a configuration, and as shown in FIG. 1B, mounting holes D0 and D1 into which the housing 1 can be inserted are formed at predetermined mounting positions of the door D, and the mounting holes D0 are formed. , D1 is inserted and fixed. In this case, the main body 10 of the housing 1 can be inserted into the door D at a predetermined mounting position together with the boss 15 at the upper center of the flange 11, and the bosses 16, 17, 18 at the upper side and lower center of the housing 1. Three small holes D1 into which can be inserted are formed. In this way, the packing S1 is arranged around the mounting holes D0 and D1 on the front side of the door D, and the main body 10 of the housing 1 together with the bosses 16, 17, and 18 on the rear surface of the flange 11 from the front of the mounting holes D0 and D1. It is passed through the mounting holes D0 and D1. Thereby, the packing S1 is interposed between the flange 11 of the housing 1 and the periphery of the mounting holes D0 and D1. Then, on the rear surface side of the door D, the main body 10 of the housing 1 is passed through the large hole 510 of the fixing portion 51 of the bracket 5 to which the solenoid 6 is attached together with the boss 15 at the upper center of the flange 11. 5, the bosses 16, 17, 18 (see FIG. 2) of the housing 1 and the screw insertion portions 511, 511, 511 (see FIG. 8) of the bracket 5 are matched to each screw. The mounting screw 53 is passed through the insertion portions 511, 511, and 511 and fastened to the screw holes 160, 170, and 180 (see FIG. 2) of the bosses 16, 17, and 18, and the lock device R is fixed to the door D. Fixed at the mounting position.

  In this way, the locking device R is normally attached to the receiving portion attached to the predetermined attachment position on the storage (box body) side by the rotation operation of the key of the cylinder lock 3 within the angle range of 90 °. The door D is locked or unlocked by engaging or disengaging, and the lock case 2 is automatically unlocked in the housing 1 by the operation of the earthquake sensing device 8 and the solenoid 6 when an earthquake occurs. Then, the lock knob 2 and the receiving portion are disengaged by rotating the lock case 2 together with the cylinder lock 3 by rotating the operation knob portion 21 at one end of the lock case 2 in the 90 ° angle range. The door D is opened and closed using the operation knob 21 as a knob of the door D.

A method of using the lock device R will be described with reference to FIG.
As shown in FIG. 1, in this locking device R, the plunger 61 of the solenoid 6 is normally inserted into the shaft insertion hole 12 of the housing 1 and the shaft insertion portion 22 of the lock case 2, so The display window 70 of the indicator 7 of the housing 1 is displayed in red indicating the locked state.
Normally, when opening the door D of the storage, if a key is inserted into the key hole 30 of the cylinder lock 3 and rotated 90 ° clockwise, the lock D is fixed to the lock shaft 31 of the cylinder lock 3 and the storage (box body) The lock 4 at the locking position engaged with the receiving portion is rotated 90 ° rightward to the unlocking position, and the engagement between the locking plate 4 and the receiving portion is released. As a result, the door D is unlocked, and the door D is opened from this state using the operation knob 21 as a knob. On the other hand, when closing the door D of the storage (box body), the door D is closed using the operation knob 21 as a knob, and a key is inserted into the key hole 30 of the cylinder lock 3 and rotated 90 degrees counterclockwise. The lock 4 at the unlocking position, which is fixed to the lock shaft 31 of the cylinder lock 3 and is not engaged with the receiving portion of the storage (box body), rotates 90 ° counterclockwise to the locking position. And the receiving part are engaged. Thereby, the door D is locked.
When the door D is locked and unlocked, the positioning case P between the housing 1 and the locking case 2 holds the locking case 2 in the housing 1 securely, and the shaft insertion hole of the housing 1 is secured. 12 and the shaft insertion portion 22 of the lock case 2 are reliably aligned, and the shaft insertion hole 12 and the shaft insertion portion 22 have a predetermined clearance so that they are larger than the outer diameter of the plunger 61 of the solenoid 6. By being formed in the shape of a long hole that is slightly larger in the longitudinal direction, the load on the plunger 61 due to the contact between the inner wall surface of the shaft insertion hole 12 and the inner wall surface of the shaft insertion portion 22 and the plunger 61 is small. Maintained well.
When an earthquake occurs and the earthquake sensing device 8 is activated and an earthquake sensing signal is transmitted, the solenoid 6 receives this signal, the solenoid 6 is activated, and the plunger 61 is inserted into the shaft insertion portion of the lock case 2. 22 is switched to an unlocked state allowing the movement of the lock case 2 in the rotation direction within the housing 1, and the display window 70 of the indicator 7 is displayed (the display member 72 is pulled up by the retracting operation of the plunger 61). A blue color indicating the unlocked state is displayed.
In this manner, the lock case 2 can be rotated in the housing 1, and when the operation knob portion 21 at one end of the lock case 2 is rotated 90 ° to the right, the lock case 2 is rotated 90 ° to the right together with the cylinder lock 3. By rotating, the stopper 4 fixed to the lock shaft 31 of the cylinder lock 3 is rotated 90 ° rightward to the unlocked position, and the engagement between the stopper 4 and the receiving portion is released. Thereby, the door D is unlocked, and the door D can be opened from this state using the operation knob portion 21 as a knob.
The locking device R is returned to the normal use state by resetting the solenoid 6, and the red indicating the locked state is displayed on the display window 70 of the indicator 7.
In addition, since the battery is employed as the power source for the earthquake detection device 8 and the solenoid 6, the earthquake detection device 8 and the solenoid 6 can be operated in the event of a power failure.

  As described above, the locking device R with the emergency unlocking mechanism includes the housing 1, the lock case 2 that is rotatably fitted and held in the housing 1, and the non-rotatable fitting and holding in the lock case 2. A cylinder lock 3 and a lock 4 attached to the lock shaft 31 of the cylinder lock 3 protruding from the other end of the lock case 2 so as to be rotatable together with the lock shaft 31; Electrically connected to the earthquake sensing device 8, the plunger 61 is disposed in the shaft insertion hole 12 of the housing 1 and the shaft insertion portion 22 of the lock case 2 so as to be able to advance and retreat, and the plunger 31 is normally in the shaft insertion hole 12 of the housing 1. And when it is inserted into the shaft insertion portion 22 of the lock case 2 to lock the rotation of the lock case 2 in the housing 1 and receives a signal from the earthquake sensing device 8. A ranger 61 is retracted from the shaft insertion portion 22 of the lock case 2 and includes a solenoid 6 in an unlocked state that allows the lock case 2 to move in the rotation direction within the housing 1. The stopper 4 is attached to the attachment position, and the latch 4 is usually engaged with or released from the receiving part attached to the predetermined attachment position of the storage (box body) by operating the key of the cylinder lock 3. The door D is locked or unlocked by the operation, and when an earthquake occurs, the operation of the earthquake detection device 8 and the solenoid 6 automatically releases the lock state of the lock case 2 in the housing 1, By rotating the lock case 2 together with the cylinder lock 3 by rotating operation, the engagement between the stopper 4 and the receiving part is released and the door D is unlocked. Open and close Since the formula is taken, a separate handle for opening and closing the door D is not required, and the area occupied by each part of the locking device R in the door D is made as small as possible. The portion appearing on the surface can be reduced to improve the appearance of the door D, the degree of freedom in the design of the door D can be increased, and the device configuration can be simplified to easily attach to the door D. In addition, the waterproof portion can be improved by reducing the waterproof portion of the door D, and the simple operation knob portion 21 instead of the handle is integrally provided, so that the operation knob portion 21 can be easily operated. Thus, the door D after unlocking can be smoothly opened and closed.

Further, in the mounting of the locking device R, a large hole D0 through which the main body 10 of the housing 1 can be inserted with a boss 15 at the upper center of the flange 11 at a predetermined mounting position of the door D, the left and right sides of the upper portion of the housing 1 and the lower portion Three small holes D1 through which the central bosses 16, 17, 18 can be inserted, and the housing 1 is inserted into the large hole D0 from the front side of the door D, and the bosses 16, 17, 18 is fitted into each small hole D1, and the mounting screw 53 is simply fastened to each boss 16, 17, 18 on the rear surface of the door D via the bracket 5, so that the locking device R can be easily attached.
Further, a seal material S1 is interposed between the flange 11 of the housing 1 that is inserted and fixed in the mounting hole D0 at a predetermined mounting position of the door D and the periphery of the mounting hole D0, and the inner peripheral surface of the housing 1 and the lock. Sealing materials S1 and S2 are interposed between the outer peripheral surface of the case 2 and between the inner peripheral surface of the lock case 2 and the outer peripheral surface of the lock shaft 31 of the cylinder lock 3, respectively. Intrusion of water from between the respective parts of the lock case 2 and the cylinder lock 3 can be reliably prevented.

In this locking device R, the rotation of the lock case 2 in the housing 1 is performed between the housing 1 and the solenoid 6 in conjunction with the advance / retreat operation of the plunger 61 of the solenoid 6 with respect to the shaft insertion portion 22 of the lock case 2. Since the indicator 7 for switching between the locked state for restricting the movement of the direction and the unlocked state for releasing the restriction is provided, the lock state of the lock case 2 is automatically released in the housing 1 when an earthquake occurs. It is possible to immediately see the state of being.
Further, between the housing 1 and the lock case 2, the position of the lock case 2 together with the cylinder lock 3 in the housing 1 between the position where the stopper 4 and the receiving part are engaged and the position where the engagement is released. Since the guide G is provided so as to be rotatable, the operation knob portion 21 can be easily and smoothly rotated after an earthquake occurs and the lock case 2 is automatically unlocked in the housing 1. .
Furthermore, since the positioning engagement portion P for aligning the shaft insertion hole 12 of the housing 1 and the shaft insertion portion 22 of the lock case 2 is provided between the housing 1 and the lock case 2, as a normal state, The lock case 2 can be securely held in the housing 1 to align the shaft insertion hole 12 of the housing 1 with the shaft insertion portion 22 of the lock case 2, and the inner wall surface of the shaft insertion hole 12 of the housing 1. And the load of the plunger 61 due to the contact between the inner wall surface of the shaft insertion portion 22 of the lock case 2 and the plunger 61 can be reduced, and the performance of the solenoid 6 can be maintained well.

In this embodiment, the case where the lock device R is attached to the door D of the storage and the receiving part is attached to the storage (box body) is exemplified. However, the lock device R is attached to the storage (box body). Attachment and a receiving part can also be provided in the door D, and the same effect can be obtained in this way. However, in this case, an opening / closing handle or knob is required for the door.
Moreover, in this embodiment, although the case where the locking device R was applied to a small storage (storage) was illustrated, this locking device R can be similarly applied to a door of a warehouse such as a disaster prevention warehouse. Of course, the same effect can be obtained.

R Locking device with an emergency unlocking mechanism 1 Housing 10 Main body 11 Flange 12 Shaft insertion hole 13 Groove 14 Groove 15 Boss 151 Cover 16, 17 Boss 160, 170 Screw hole 18 Boss 180 Screw hole 2 Lock case 20 Main body 201 Retaining ring 21 Operation knob section 211 Convex section 22 Shaft insertion section 23 O-ring mounting section 24 O-ring mounting section G Guide G1 Guide groove G2 Guide protrusion P Positioning engagement section P1 Positioning recess P2 Positioning protrusion 25 Hole 26 Spring 27 Detent ball 3 Cylinder lock 3B Main body 30 Key hole 31 Lock shaft 311 Rotating shaft 312 Through hole 32 Joint 321 Flange 322 Fixing part 323 Clasp attachment part 324 Screw part 325 Through hole 33 Spring pin 4 Clasp 40 Mounting hole 41 Nut 5 Bracket 51 Fixing part 51 Large hole 511 Small hole 52 Mounting portion 521, 522 Screw insertion hole 53 Mounting screw 6 Solenoid 60 Body 61 Plunger 62 Mounting screw 7 Indicator 70 Display window 71 Display member 711 Upper half 712 Lower half 8 Earthquake detection device S1 Sealing material ( Packing)
S10 hole S11 hole S2 Seal material (O-ring)
S3 Seal material (O-ring)
D Door D0 Mounting hole D1 Mounting hole

Claims (5)

A lock device with an emergency unlocking mechanism that automatically unlocks and locks the door of the article storage box when an earthquake occurs,
A substantially cylindrical housing having a flange projecting toward the outer peripheral direction at one end and having a shaft insertion hole on the outer peripheral surface;
A substantially cylindrical lock case having an operation knob portion that is rotatably fitted and held in the housing, projects in the outer peripheral direction at one end, and has a shaft insertion portion that communicates with a shaft insertion hole of the housing on the outer peripheral surface. When,
The lock case is non-rotatably fitted and held, has a key hole at one end, protrudes from the other end of the lock case at the other end, and has a lock shaft that can be rotated by operating a key inserted into the key hole. A cylinder lock, and a clasp attached rotatably to the lock shaft protruding from the other end of the lock case together with the lock shaft;
It is attached to the housing via a bracket and electrically connected to an earthquake sensing device, and a plunger is disposed so as to be able to advance and retreat in a shaft insertion hole of the housing and a shaft insertion portion of the lock case. When inserted into the shaft insertion hole of the housing and the shaft insertion portion of the lock case, the lock case is controlled to move in the rotation direction in the housing, and when receiving a signal from the earthquake sensing device, A solenoid in which the plunger is retracted from the shaft insertion portion of the lock case to allow the lock case to move in the rotational direction within the housing;
With
A mounting hole through which the housing can be inserted is formed at a predetermined mounting position of the door, and is fixedly inserted into the mounting hole.
Normally, the door is locked or unlocked by engaging or disengaging the stopper attached to a predetermined attachment position on the storage side by operating the key of the cylinder lock, When an earthquake occurs, the lock case is automatically released in the housing by the operation of the earthquake sensing device and the solenoid, and the lock case is moved to the cylinder by rotating the operation knob at one end of the lock case. The door is unlocked by releasing the engagement between the clasp and the receiving portion by rotating with a lock, and the door is opened and closed with the operation knob portion as a door knob.
A locking device with an emergency unlocking mechanism.   Between the housing and the solenoid, in conjunction with the advance and retreat operation of the solenoid plunger with respect to the shaft insertion portion of the lock case, the lock state for restricting the movement of the lock case in the housing and the restriction are released. The locking device with an emergency unlocking mechanism according to claim 1, further comprising an indicator for switching and displaying the unlocked state.   A sealing material is interposed between the flange of the housing inserted and fixed in the mounting hole of the door and the periphery of the mounting hole, and between the inner peripheral surface of the housing and the outer peripheral surface of the lock case, and of the lock case. A seal material is interposed between the inner peripheral surface and the outer peripheral surface of the lock shaft of the cylinder lock to prevent water from entering between the mounting hole, the housing, the lock case, and the cylinder lock. Item 3. A locking device with an emergency unlocking mechanism according to item 1 or 2.   A guide for rotatably guiding the lock case between the housing and the lock case between a position where the stopper and the receiving portion are engaged with the cylinder lock and a position where the engagement is released, together with the cylinder lock. The locking device with an emergency unlocking mechanism according to any one of claims 1 to 3.   The emergency unlocking according to any one of claims 1 to 4, further comprising a positioning engagement portion for aligning the shaft insertion hole of the housing and the shaft insertion portion of the lock case between the housing and the lock case. Locking device with mechanism.

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