JP2015187377A - dead bolt lock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a dead bolt from coming off a retainer part or make the dead bolt hardly come off the retainer part, even when a sheet metal door is deformed with a destructively strong force, in use in the state of attachment to the sheet metal door.SOLUTION: A dead bolt lock, in which a dead bolt D34 includes a dead bolt body 3 and a latch 4, comprises a dead bolt extension mechanism. Ordinarily, the dead bolt D34 is butt-joined to a butt joint member and pre-engaged with a retainer part at normal protrusion length. In an emergency in which the dead bolt D34 is pulled away from the retainer part because an external force is destructively applied to a door, the dead bolt D34 is extended following the butt joint member on a door frame side, and engaged with the retainer part with protrusion length greater than the normal protrusion length.

Description

  The present invention relates to a dead bolt lock used for locking a door of a vending machine or a cabinet.

Conventionally, deadbolt locks are used to lock doors of vending machines and cabinets.
This type of deadbolt lock includes, for example, a lock case attached to a door, a cylinder lock connected to the lock case, and a cylinder lock (rotation of the cylinder lock (as described in Patent Document 1). And a dead bolt that is operatively connected to the cam). By rotating the cylinder lock in the locking direction by key operation, the dead bolt protrudes outward from the lock surface of the lock case in conjunction with the cylinder lock, and the door frame The dead bolt is pulled inward from the lock surface of the lock case and is released from the receiving part on the door frame side by engaging the receiving part on the side and rotating the cylinder lock in the unlocking direction by key operation. It has become so. In this case, an engaging member such as a pin is provided in the receiving portion of the door frame, and when the dead bolt protrudes from the receiving portion, one side surface of the dead bolt comes into contact with the engaging member and becomes a receiving portion. It is designed to engage.

Utility Model Registration No. 3125607

  However, when this type of deadbolt lock is used attached to a sheet metal door, especially if the sheet metal is thin, the sheet metal door can be easily deformed even by applying a relatively small force. For example, even if the door is deformed and the dead bolt on the door side and the receiving part on the door frame side are completely engaged, the dead bolt will come off the receiving part and the door will open with the deformation of the sheet metal door. There is a problem that.

  The present invention solves such a conventional problem, and when this type of dead bolt lock is used by being attached to a sheet metal door, even if the sheet metal door is destructively pulled and deformed, the dead bolt The object is to prevent the door from opening by preventing it from being removed from the receiving part or making it difficult to come off.

In order to achieve the above object, the present invention (1)
A lock case attached to the door, a cylinder lock having a lever attached to the lock case and provided with a protrusion at a tip end rotatable in the lock case; and a lock surface of the case in the lock case A dead bolt that is arranged so as to be capable of appearing and retracting and is operatively connected to the rotation lever of the cylinder lock via the protrusion, and by rotating the cylinder lock in a locking direction by a key operation, In conjunction with this, the dead bolt protrudes outward from the lock surface of the lock case and is engaged with the receiving portion on the door frame side, and the cylinder lock is rotated in the unlocking direction by a key operation, whereby the dead bolt is In the dead bolt lock of the type that is pulled inward from the lock surface of the lock case and detached from the receiving part on the door frame side,
By rotating the cylinder lock in a locking direction by a key operation between the dead bolt and the cylinder lock, the dead bolt is moved from the lock surface of the lock case to the door frame in conjunction with the cylinder lock. A deadbolt extension mechanism that elastically protrudes to a predetermined protrusion length that exceeds a normal protrusion length that can be engaged with the receiving portion of
Usually, the dead bolt that protrudes outward from the lock surface of the lock case is brought into contact with the contact surface or contact member provided in the vicinity of the receiving portion on the door frame side, so that the normal protruding length is obtained. Engaging the receiving part,
When an external force is destructively applied to the door, and the dead bolt is pulled away from the receiving portion, the dead bolt extends following the contact surface or the contact member on the door frame side, Engaged with the receiving part with a longer projecting length than the normal projecting length,
This is the gist.
in this case,
Deadbolt extension mechanism
An operating member disposed on the dead bolt so as to be slidable in a movable direction of the dead bolt via a slide guide;
An engaging portion provided on the dead bolt body in a convex shape in a direction substantially perpendicular to the movable direction of the dead bolt;
The operating member protrudes in a direction substantially perpendicular to the moving direction of the dead bolt, and the dead bolt slides in the protruding direction of the dead bolt on the dead bolt to the engaging portion of the dead bolt. A projecting direction locking part that engages and presses and projects the dead bolt from the lock surface of the lock case, and sliding of the operating member on the dead bolt in the retracting direction of the dead bolt Engaging and pressing the engaging portion, and pulling the dead bolt inward from the lock surface of the lock case;
On the dead bolt, the operating member is in a normal state and pressed and urged in the projecting direction of the dead bolt, and the engaging portion of the dead bolt is pressed by the projecting direction locking portion of the operating member. A spring member that protrudes outward from the lock surface of the lock case to a predetermined protrusion length that exceeds a normal protrusion length;
The cylinder lock is in a state where the engaging portion of the dead bolt is pressed by the protruding direction locking portion of the actuating member so that the dead bolt protrudes outward from the lock surface of the lock case to a normal protruding length. Taking the locking position, pressing the engagement portion of the dead bolt with the pulling direction locking portion of the actuating member to pull the dead bolt from the lock surface of the lock case to the inner pulling position. The cylinder lock takes an unlocking position, and is formed on the operating member so as to be engageable with a protrusion of the lever that is rotated between the locking position and the unlocking position of the cylinder lock, and the operating member is formed by the spring member. The dead bolt is fed in the pull-in direction of the dead bolt against the urging force, and the engaging portion of the dead bolt is pressed by the pull-in direction locking portion of the actuating member to hold the dead bolt in the lock case. A guide pull retracting from the lock surface on the inner side of the retracted position,
With
Normally, by rotating the cylinder lock to the unlocked position with the key, the dead bolt is pulled inward from the lock surface of the lock case by the operating member, and the cylinder lock is rotated to the locked position with the key. Accordingly, the dead bolt is projected outward from the lock surface of the lock case by the actuating member, and is brought into contact with an abutting surface or an abutting member provided in the vicinity of the receiving portion on the door frame side. Let it protrude to the protruding length, engage with the receiving part on the door frame side,
When an external force is applied to the door in a destructive manner and the dead bolt is pulled away from the receiving portion, the dead bolt is caused to follow the abutting surface or the abutting member to exceed the normal protruding length. Engaging the receiving part with a predetermined protruding length,
It is preferable.

In order to achieve the above object, the present invention (2)
A lock case attached to the door, a cylinder lock having a lever attached to the lock case and provided with a protrusion at a tip end rotatable in the lock case; and a lock surface of the case in the lock case A dead bolt that is arranged so as to be capable of appearing and retracting and is operatively connected to the rotation lever of the cylinder lock via the protrusion, and by rotating the cylinder lock in a locking direction by a key operation, In conjunction with this, the dead bolt protrudes outward from the lock surface of the lock case and is engaged with the receiving portion on the door frame side, and the cylinder lock is rotated in the unlocking direction by a key operation, whereby the dead bolt is In the dead bolt lock of the type that is pulled inward from the lock surface of the lock case and detached from the receiving part on the door frame side,
The dead bolt is composed of a dead bolt main body and a latch disposed in the dead bolt main body so as to be able to protrude and retract from a tip end portion of the dead bolt main body.
By rotating the cylinder lock in the locking direction by a key operation between the dead bolt and the cylinder lock, the latch is protruded from the tip of the dead bolt body in conjunction with the cylinder lock. A deadbolt extension mechanism that elastically protrudes the deadbolt body from a lock surface of the lock case to a predetermined protrusion length exceeding a normal protrusion length that can be engaged with the receiving portion of the door frame,
Usually, the dead bolt that protrudes outward from the lock surface of the lock case is brought into contact with the contact surface or bump provided near the receiving portion on the door frame side via the latch that protrudes from the tip of the dead bolt main body. By engaging the contact member, it is engaged with the receiving portion with the normal protruding length,
When an external force is destructively applied to the door and the dead bolt is pulled away from the receiving portion, the dead bolt body extends following the contact surface or the contact member on the door frame side, Engaged with the receiving part with a longer projecting length than the normal projecting length,
This is the gist.
in this case,
The latch is disposed on the dead bolt body so as to be slidable in the movable direction of the dead bolt via a slide guide.
Deadbolt extension mechanism
An engaging portion provided on the dead bolt body in a convex shape in a direction substantially perpendicular to the movable direction of the dead bolt;
The latch projects from the dead bolt in a direction substantially perpendicular to the movable direction of the dead bolt, and slides in the projecting direction of the dead bolt on the dead bolt main body to the engagement portion of the dead bolt main body. A projecting direction latching portion that engages and presses and causes the deadbolt body to project from the lock surface of the lock case, and the deadbolt body by sliding the latch in the retracting direction of the deadbolt on the deadbolt body Engaging and pressing the engagement portion, and pulling the dead bolt body inward from the lock surface of the lock case;
On the deadbolt main body, the latch is normally pressed and urged in the protruding direction of the deadbolt so that the latch protrudes from the tip of the deadbolt main body, and the protruding direction locking portion of the latch A spring member that presses the engaging portion of the dead bolt body to cause the dead bolt body to protrude outward from the lock surface of the lock case to a predetermined protruding length exceeding a normal protruding length;
The cylinder in a state where the engaging portion of the dead bolt body is pressed by the protruding direction locking portion of the latch so that the dead bolt body protrudes outward from the lock surface of the lock case to a normal protruding length. The lock takes a locking position, and the engaging portion of the dead bolt body is pressed by the pulling direction locking portion of the latch to pull the dead bolt body from the lock surface of the lock case to the inside drawing position. In this state, the cylinder lock takes an unlocking position, and is formed in the latch so as to be engageable with a pin of the lever that is rotated between the locking position and the unlocking position of the cylinder lock. The dead bolt is fed in the retracting direction of the dead bolt against the biasing force of the spring member, and the engaging portion of the dead bolt body is pressed by the retracting direction locking portion of the latch. A guide pull to retract the body from the lock surface of the lock casing in the retracted position of the inner,
With
Normally, by rotating the cylinder lock to the unlocking position with the key, the dead bolt body is pulled inward from the lock surface of the lock case by the latch, and the cylinder lock is rotated to the locking position with the key. By operating, the latch protrudes from the tip of the dead bolt body, and the dead bolt body protrudes outward from the lock surface of the lock case by the latch and is provided near the receiving portion on the door frame side. Abutting against the abutting surface or abutting member, projecting to the normal projecting length, and engaging with the receiving portion on the door frame side,
When an external force is applied to the door in a destructive manner and the dead bolt body is pulled away from the receiving portion, the dead bolt body is caused to follow the abutting surface or abutting member and the normal projecting length. Engaging the receiving part with a protruding length exceeding
It is preferable.

In order to achieve the above object, the present invention (3)
A lock case attached to the door, a cylinder lock having a lever attached to the lock case and provided with a protrusion at a tip end rotatable in the lock case; and a lock surface of the case in the lock case A dead bolt that is arranged so as to be able to appear and retract and is operatively connected to the lever of the cylinder lock via the protrusion, and by rotating the cylinder lock in a locking direction by a key operation, the cylinder lock is interlocked with the cylinder lock. The dead bolt protrudes outward from the lock surface of the lock case and is engaged with the receiving portion on the door frame side, and the deadlock is moved by the key operation in the unlocking direction. In the dead bolt lock of the type that is pulled inward from the lock surface of the case and detached from the receiving part on the door frame side,
The dead bolt is composed of a dead bolt main body and a latch disposed in the dead bolt main body so as to be able to protrude and retract from a tip end portion of the dead bolt main body.
Between the deadbolt body and the latch, the latch is elastically projected from the tip of the deadbolt body, and the deadbolt is engaged with the receiving portion of the door frame from the lock surface of the lock case. A deadbolt extension mechanism that protrudes to a predetermined protrusion length that exceeds the normal protrusion length possible,
Usually, the dead bolt projecting outward from the lock surface of the lock case is brought into contact with an abutting surface or an abutting member provided in the vicinity of the receiving portion on the door frame side so that the leading end of the dead bolt main body By immersing in the part, engage the receiving part with the normal protruding length,
When an external force is applied destructively to the door and the dead bolt is pulled away from the receiving portion, the latch follows the receiving portion and protrudes from the tip of the dead bolt main body. Engaging the receiving part with a protruding length longer than the protruding length;
This is the gist.
in this case,
The latch is formed so that it can be placed along both sides of the deadbolt body,
Deadbolt extension mechanism
A guide that is provided between the deadbolt body and the latch and guides the latch so as to be slidable in the movable direction of the deadbolt on both sides of the deadbolt body;
The latch is normally pressed and urged in the protruding direction of the dead bolt on both sides of the dead bolt main body, the latch is protruded from the tip of the dead bolt main body, and the dead bolt is removed from the lock surface of the lock case. A spring member extending to a predetermined protruding length exceeding a normal protruding length protruding outward;
With
In a state where the deadbolt body is retracted together with the latch from the lock surface of the lock case to the inside retracted position, the cylinder lock takes an unlocked position, and the deadbolt body is moved outward from the lock surface of the lock case. With the cylinder protruding to the normal protruding length, the cylinder lock takes the locked position,
Usually, by rotating the cylinder lock to the unlocking position with the key, the dead bolt body is pulled inward from the lock surface of the lock case together with the latch, and the cylinder lock is rotated to the locking position with the key. By doing so, the dead bolt main body is projected outward from the lock surface of the lock case together with the latch, and the latch is brought into contact with a contact surface or a contact member provided in the vicinity of the receiving portion on the door frame side. By immersing the tip of the dead bolt body, the dead bolt is engaged with the receiving portion on the door frame side with the normal protruding length,
When an external force is applied to the door in a destructive manner and the dead bolt is pulled away from the receiving portion, the latch is caused to follow the contact surface or the contact member from the tip of the dead bolt main body, Engaging the dead bolt with the receiving portion with a protruding length exceeding the normal protruding length;
It is preferable.

  According to the deadbolt lock of the present invention (1), the deadlock is locked to the lock case in conjunction with the cylinder lock by rotating the cylinder lock in the locking direction by a key operation between the deadbolt and the cylinder lock. A dead bolt extension mechanism is provided that elastically protrudes from the lock surface to a predetermined protrusion length that exceeds the normal protrusion length that can be engaged with the receiving portion on the door frame side, and normally protrudes outward from the lock surface of the lock case. By engaging the dead bolt to be brought into contact with the contact surface or contact member provided near the receiving part on the door frame side, it engages with the receiving part with a normal protruding length, and external force is applied to the door destructively. When the deadbolt is pulled away from the receiving part, the deadbolt is extended following the contact surface or the contact member on the door frame side and engaged with the receiving part with a longer projecting length than the normal projecting length. This is because When a bolt lock is attached to a sheet metal door, even if the sheet metal door is destructively pulled and deformed, the dead bolt is prevented from being removed from the receiving part or prevented from being removed, thereby preventing the door from opening. can do.

  According to the deadbolt lock of the present invention (2), the deadbolt is constituted by a deadbolt body and a latch that is disposed on the deadbolt body so as to be able to protrude and retract from the tip of the deadbolt body. By rotating the cylinder lock in the locking direction by key operation between the cylinder lock and the cylinder lock, the latch is protruded from the tip of the dead bolt in conjunction with the cylinder lock, and the dead bolt body is locked to the lock case. A dead bolt extension mechanism that elastically protrudes from the surface to a predetermined protrusion length that exceeds the normal protrusion length that can be engaged with the receiving portion of the door frame, and that normally protrudes outward from the lock surface of the lock case. Is brought into contact with a contact surface or a contact member provided in the vicinity of the receiving portion on the door frame side through a latch that protrudes from the tip of the dead bolt body. In the event of an emergency when external force is applied to the door and the dead bolt is pulled away from the receiving portion, the dead bolt is extended to follow the contact surface or contact member on the door frame side. Since the projecting length is longer than the normal projecting length, it is made to engage with the receiving part.When this dead bolt lock is attached to the sheet metal door, the sheet metal door is strongly destructively pulled and deformed. However, it is possible to prevent the door from opening by preventing the dead bolt from being removed from the receiving portion or making it difficult to remove. In addition, since the latch is extended from the distal end portion of the dead bolt body, it is possible to ensure a sufficient protruding length for the dead bolt.

  According to the deadbolt lock of the present invention (3), the deadbolt is constituted by a deadbolt body and a latch that is disposed on the deadbolt body so as to be able to protrude and retract from the tip of the deadbolt body. The latch is elastically protruded from the tip of the dead bolt body between the latch and the latch, and the dead bolt exceeds a predetermined protruding length that can be engaged with the receiving part of the door frame from the lock surface of the lock case. A deadbolt extension mechanism is provided to project to the projected length of the door. Normally, the deadbolt that projects outward from the lock surface of the lock case is placed against the contact surface or contact member provided near the receiving portion on the door frame side. In the event of an emergency when the deadbolt is pulled away from the receiving part by engaging the receiving part with a normal protruding length by applying the contact to the tip of the deadbolt body and making contact with the receiving part. The latch is made to follow the receiving part and protrude from the tip of the dead bolt body, and the dead bolt lock is made to engage with the receiving part with a protruding length longer than the normal protruding length. When attached and used, even if the sheet metal door is strongly destructively pulled and deformed, it is possible to prevent the door from opening by preventing the dead bolt from being removed from the receiving portion or making it difficult to come off. In addition, since the latch is extended from the distal end portion of the dead bolt body, it is possible to ensure a sufficient protruding length for the dead bolt.

The perspective view which shows the external appearance of the deadbolt lock in one embodiment of this invention The figure which shows the structure of the deadbolt lock ((a) is a front view (b) is a horizontal sectional view) The figure which shows the shape and structure of the cylinder lock lever of the deadbolt lock ((a) is a front view (b) is a side sectional view) The figure which shows the structure of the deadbolt body of the deadbolt lock ((a) is a front view (b) is a bottom view (c) is a horizontal sectional view) The figure which shows especially the structure of a latch of the deadbolt lock ((a) is a front view (b) is a bottom view (c) is a horizontal sectional view) The figure which shows the state which attached the deadbolt lock to the door made from sheet metal, and attached the pin to the door frame as a receiving part ((a) is a horizontal sectional view (b) is a front view) The figure which shows the state which attached the deadbolt lock to the door made from sheet metal, and attached the plate to the door frame as a receiving part ((a) is a horizontal sectional view (b) is a front view) The figure showing the operation of the dead bolt lock ((a1) is a partially broken front view showing the state where the dead bolt is pulled into the lock case (b1) is the horizontal sectional view (a2), and the dead bolt is normal from the lock case. The partially broken front view (b2) showing the state of being protruded at a protruding length of (b2) is the same as the horizontal sectional view (a3), and the dead bolt is protruded from the lock case with an emergency protruding length exceeding the normal protruding length. (Part 3 is a partially broken front view showing the state (b3) is a horizontal sectional view) The perspective view which shows the external appearance of the deadbolt lock in other embodiment of this invention. The figure which shows the structure of the deadbolt lock ((a1) is a front view during locking (b1) is a horizontal sectional view during locking (a2) is a front sectional view during unlocking (b2) is a horizontal sectional view during unlocking ) The figure which shows the shape and structure of the cylinder lock lever of the deadbolt lock ((a) is a front view (b) is a side view) The figure which shows the structure of the deadbolt main body of the deadbolt lock ((a) is a front view (b) is a bottom view) The figure which shows especially the structure of a latch of the deadbolt lock ((a) is a front view (b) is a bottom view) The figure which shows the state which attached the deadbolt lock to the door made from sheet metal, and attached the receiving part to the door frame ((a) is a front view (b) is a bottom view) The figure showing the operation of the deadbolt lock ((a1) is a partially omitted front view showing the state where the deadbolt is pulled into the lock case (b1) is the horizontal sectional view (a2), and the deadbolt is normal from the lock case. The front view (b2) showing the state of being protruded at the protruding length of (b2) is the horizontal sectional view (a3) is the state where the dead bolt is protruded from the lock case with an emergency protruding length exceeding the normal protruding length. The partially omitted front view (b3) is a horizontal sectional view)

Next, embodiments for carrying out the present invention will be described with reference to the drawings.
1 and 2 show a deadbolt lock U. FIG.
As shown in FIGS. 1 and 2, the deadbolt lock U is provided with a lock case 1 attached to a door, and a protrusion 221 attached to a distal end portion that is attached to the lock case 1 and is rotatable in the lock case 1. A cylinder lock 2 having a lever 22 and a dead bolt D34 which is disposed in the lock case 1 so as to be able to protrude and retract from the lock surface 101 of the case 1 and is operatively connected to the lever 22 of the cylinder lock 2 through a protrusion 221. By rotating the cylinder lock 2 in the locking direction by a key operation, the dead bolt D34 protrudes outward from the lock surface 101 of the lock case 1 in conjunction with the cylinder lock 2 and engages with the receiving portion 61 on the door frame side. When the cylinder lock 2 is rotated in the unlocking direction by a key operation, the dead bolt D34 is pulled inward from the lock surface 101 of the lock case 1 and detached from the receiving portion 61 on the door frame side. Take the format.
In this deadbolt lock U, in particular, the deadbolt D34 includes a deadbolt body 3 and a latch 4 disposed on the deadbolt body 3 so as to be able to protrude and retract from the tip of the deadbolt body 3. By rotating the cylinder lock 2 in the locking direction by key operation between the bolt D34 and the cylinder lock 2, the latch 4 is projected from the tip of the dead bolt body 3 in conjunction with the cylinder lock 2, A deadbolt extension mechanism 5 that elastically protrudes the deadbolt body 3 from the lock surface 101 of the lock case 1 to a predetermined protrusion length exceeding the normal protrusion length that can be engaged with the receiving portion 61 of the door frame; The dead bolt D34 that protrudes outward from the lock surface 101 of the lock case 1 is provided near the receiving portion on the door frame side via the latch 4 that protrudes from the tip of the dead bolt body 3. Is brought into contact with the receiving portion 61 with a normal protruding length, an external force is applied to the door destructively, and the dead bolt D34 is pulled away from the receiving portion 61. In the event of an emergency, the dead bolt body 3 extends following the contact surface or contact member on the door frame side, and is engaged with the receiving portion 61 with a protrusion length longer than a normal protrusion length. ing.

  As shown in FIGS. 1 and 2, the lock case 1 includes a substantially box-shaped main body case 10 having an opening on the front surface, and a lid 11 attached to the front opening of the main body case 10 and closing the front opening. . In this case, the main body case 10 is formed in a substantially rectangular box shape, and is composed of a back surface and four side surfaces. One side surface of the four side surfaces is a lock surface 101, and an entrance / exit 100 for a dead bolt D34 is formed in the center thereof. The The main body case 10 is formed with screw insertion portions 102 for attachment screws at the four corners of the back surface, and screw seats 103 are attached in the vicinity of the inner sides of the respective screw insertion portions 102 on one diagonal line. The lid 11 is made of a substantially rectangular plate corresponding to the front opening of the main body case 10, and four corners are cut out so that mounting screws can be inserted, and screw insertion portions 113 are formed at positions corresponding to the respective screw seats 103 of the main body case 10. It is formed. In this way, the lock case 1 is assembled by incorporating the members constituting the dead bolt D34 and the dead bolt extension mechanism 5 into the main body case 10 and attaching the lid 11 to the front opening of the main body case 10. The lid 11 is attached to the main body case 10 with screws passed from the screw insertion portions 113 fastened to the screw seats 103 of the main body case 10. In addition, the lock case 1 is engaged with a lever 22 (a stopper engaging portion 223 described later) at a predetermined position around the rotation area of the lever 22 of the cylinder lock 2 to restrict the rotation of the lever 22. A stopper 104 is also provided.

  As shown in FIGS. 1 and 2, the cylinder lock 2 is a generally known cylinder lock, and a key hole 20 is formed from the front surface of the rotor 21 to the back surface. A lever (rotary cam) 22 having a pin as a protrusion 221 is attached to the tip portion so as to protrude in the radial direction of the rotor 21. The cylinder lock 2 is connected to the approximate center of the lid 11 of the lock case 1, the lever 22 is rotatably disposed in the main body case 10, and the pin 221 of the lever 22 projects toward the back surface of the main body case 10. Is done. In this way, a key (not shown) is inserted into the key hole 20 of the cylinder lock 2, and the lever 22 is set within a predetermined angle range around the axis of the cylinder lock 2 in the lock case 1 by rotating the key. It is configured to be rotatable between a predetermined rotation start end position and a predetermined rotation end position. The shape and configuration of the lever 22 are shown in FIG. In this case, the lever 22 protrudes from the circular portion 220, the lever portion 222 that protrudes from the circular portion 220 and has a pin 221 on one surface on one side, and a convex shape in a direction opposite to the protruding direction of the lever portion 222 from the circular portion 220. The stopper engaging portion 223.

As shown in FIG. 2, the dead bolt D34 includes a dead bolt body 3 and a latch 4, and the latch 4 is disposed on the dead bolt body 3 via a slide guide 34 so as to be slidable in the movable direction of the dead bolt D34. The
As shown in FIG. 4, the dead bolt body 3 is formed in a substantially U shape when viewed from the front, and has a pair of latch portions 31 and 32 and a connecting portion 33 that connects between the base end portions of the latch portions 31 and 32. The space surrounded by the latch portions 31 and 32 and the connecting portion 33 is a space for arranging the latch 4, and the inner side surfaces of the latch portions 31, 32 and the connecting portion 33 connect the latch 4 to the movable direction of the dead bolt D34. It is a slide guide 34 for moving and guiding. In this case, the pair of latch portions 31 and 32 are each formed in a rectangular and elongated plate shape, and the surface on the front side when the dead bolt D34 is assembled into the lock case 1 is formed in an uneven shape. The front side surface of one of the latch portions 31 that is the upper side when assembled into the lock case 1 is partially concave on the base end portion side (hereinafter referred to as the concave portion 310), and the remaining distal end portion is convex ( Hereinafter, the surface on the front side of the other latch portion 32 which is formed into a convex portion 311 and is the lower side when assembled in the lock case 1 is partially convex (hereinafter referred to as a convex portion). 321), the base end side which is the remaining portion is formed in a concave shape (hereinafter referred to as a concave portion 320). The convex portions 311 and 321 of the latch portions 31 and 32 have the same height and have a cross-sectional shape corresponding to the entrance / exit 100 of the lock surface 101 of the lock case 1. In addition, the concave portions 310 and 320 of the latch portions 31 and 32 have the same height, and the proximal end of the convex portion 311 of the latch portion 31 is located between the concave portions 310 and 320 in the cylinder lock 2. The lever 22 of the cylinder lock 2 serves as a stopper 312 for restricting the rotation of the lever 22 of the cylinder lock 2. The lever 22 of the cylinder lock 2 has a rotation start end position substantially perpendicular to the inner surface of the connecting portion 33 and each position. The lever is rotated between the rotation end position perpendicular to the direction in which the latch portions 31 and 32 extend, that is, the stopper 321, and at the rotation end position of the lever 22, the lever portion 222 of the lever 22 and one of the latch portions 31. The rotation of the lever 22 is regulated by the engagement with the stopper 312 and the engagement between the stopper engaging portion 223 of the lever 22 and the stopper 104 in the lock case 1. . The connecting portion 33 is raised to the same height as the convex portions 311 and 321 of the latch portions 31 and 32, and a mounting groove 350 for the spring member 351 is formed in the center of the inner surface of the connecting portion 33.
Further, the dead bolt body 3 is provided with an engaging portion 36 that is part of the dead bolt extending mechanism 5 (engageable with the latch 4). The engaging portion 36 is formed on the dead bolt body 3 so as to protrude in a direction substantially perpendicular to the moving direction of the dead bolt D34. In this case, the engaging portion 36 is formed between the inner side surfaces of the pair of latch portions 31 and 32 so as to be connected to a position slightly closer to the distal end portion than the center between the distal end portion and the proximal end portion of each latch portion 31 and 32. The The engaging portion 36 is formed in a quadrangular cross section, and each surface directed toward the distal end portion and the proximal end portion of each latch portion 31, 32 is an engagement surface with the latch 4.
As shown in FIG. 5, the latch 4 is formed in a rectangular shape in front view so as to be disposed between the latch portions 31 and 32 of the dead bolt main body 3, and the front end portion is formed in a slanted shape on the back side and is tapered. In this case, the latch 4 is formed in an elongated and substantially plate shape, and the surface that becomes the front side when the dead bolt D34 is assembled into the lock case 1 is a part of the front end side, like the front side of the other latch portion 32. Is formed in a concave shape (hereinafter referred to as a concave portion 40), and the pin 221 of the lever 22 of the cylinder lock 2 is engaged at a position close to the base end portion of the concave portion 40. A retractable guide 43 is formed as possible. The pull-in guide 43 is formed so as to penetrate in a groove shape from one downward side surface of the latch 4 to the other upward side surface. The lower half of the groove is a stopper groove 430, the pin 221 of the lever 22 is formed in a square shape so that the pin 221 can be fitted, and the upper half is a guide groove 431 for guiding the pin 221 of the lever 22 in the rotation direction of the lever 22. The end portion of the stopper groove 430 is tapered toward the other side of the latch 4 facing upward.
Further, the latch 4 is provided with a protruding direction locking portion 41 and a retracting direction locking portion 42 that form a part of the deadbolt extension mechanism 5 (can be locked to the deadbolt body 3). Each of the protruding direction locking portion 41 and the pulling direction locking portion 42 is formed in the latch 4 so as to protrude in a direction substantially perpendicular to the movable direction of the dead bolt D34. In this case, each of the protruding direction locking portion 41 and the retracting direction locking portion 42 has a predetermined direction from the position corresponding to the engaging portion 36 of the dead bolt body 3 on the back side surface of the latch 4 toward the proximal end portion. A recess 44 is formed in the length so that the engaging portion 36 of the deadbolt body 3 can be loosely fitted, and formed on the distal end side surface and the proximal end side surface of the recess 44. The concave portion 44 is formed at a right angle to the back surface of the latch 4, and the inner surface of the concave portion 44 on the proximal end side forms a protruding direction locking portion 41, and the inner surface on the distal end side of the concave portion 44 forms a pulling direction locking portion 42. . An attachment groove 45 for attaching a spring member 351 forming a part of the dead bolt extension mechanism 5 is formed on the base end surface of the latch 4.
In this way, the dead bolt D34 is configured by incorporating the latch 4 into the slide guide 34 on the dead bolt main body 3, and from the distal end portion of the dead bolt main body 3 to the base end side end portion of the convex portion 311 of one latching portion 31. A certain range on the tip end side to the vicinity is a portion that protrudes or is pulled in from the lock surface 101 of the lock case 1, this portion is directed toward the entrance / exit 100 of the lock surface 101 of the lock case 1, and the front of the dead bolt D 34 is covered 11, the back is the main body case 10 side, and is supported (clamped) between the two screw seats 103 in the lock case 1, and the screw seat 103 and the entrance / exit 100 of the lock surface 101 are used as a guide. The lock case 1 is incorporated so as to protrude or retract.

The deadbolt extension mechanism 5 includes an engagement portion 36 that is provided on the deadbolt body 3 so as to protrude in a direction substantially perpendicular to the movable direction of the deadbolt D34, and the latch 4 that is substantially perpendicular to the movable direction of the deadbolt D34. The dead bolt main body 3 is locked in a lock case by projecting in the direction and engaging and pressing the engagement portion 36 of the dead bolt main body 3 by sliding the dead bolt D34 on the dead bolt main body 3 in the protruding direction. 1 is engaged with the engagement portion 36 of the dead bolt body 3 by sliding in the retracting direction of the dead bolt D34 on the dead bolt body 3 of the latch 4 The dead-bolt body 3 is pulled inwardly from the lock surface 101 of the lock case 1 and the pull-in direction locking portion 42 is dead. The latch 4 is protruded from the distal end portion of the dead bolt body 3 by pressing and energizing the projection D34 in the protruding direction, and the engaging portion 36 of the dead bolt body 3 is pressed by the protruding direction locking portion 41 of the latch 4. A spring member 351 for projecting the dead bolt body 3 outward from the lock surface 101 of the lock case 1 to a predetermined projecting length exceeding the normal projecting length, and the dead bolt body 3 are provided on the dead bolt body 3. A stopper 312 for restricting the rotation of the lever 22 of the cylinder lock 2 in a state of protruding from the lock surface 101 to a predetermined protruding length exceeding the normal protruding length, and a protruding direction locking portion 41 of the latch 4 The cylinder lock 2 is locked in a state in which the engaging portion 36 of the deadbolt body 3 is pressed so that the deadbolt body 3 protrudes outward from the lock surface 101 of the lock case 1 to the normal protruding length. In the state where the engaging part 36 of the dead bolt body 3 is pressed by the pulling direction locking part 42 of the latch 4 and the dead bolt body 3 is pulled from the lock surface 101 of the lock case 1 to the inner drawing position. The cylinder lock 2 is formed in the latch 4 so as to be able to engage with the pin 221 of the lever 22 which takes the unlocking position and is rotated between the locking position and the unlocking position, and the latch 4 is attached to the spring member 351. The deadbolt D34 is fed in the pulling direction against the force, and the engaging part 36 of the deadbolt body 3 is pressed by the pulling direction locking portion 42 of the latch 4 to move the deadbolt body 3 from the lock surface 101 of the lock case 1. And a pull-in guide 43 that is pulled into the inner pull-in position.
In this case, the engaging portion 36 of the dead bolt body 3 is as already described in the description of the configuration of the dead bolt body 3.
The protrusion direction locking part 41 and the pulling direction locking part 42 of the latch 4 are as already described in the description of the configuration of the latch 4.
A coil spring is used as the spring member 351, and one end of the coil spring 351 is attached and fixed to the attachment groove 350 on the inner surface of the connecting portion 33 of the dead bolt body 3, and the other end is attached and fixed to the attachment groove 44 on the base end surface of the latch 4. Then, the latch 4 is placed on the dead bolt main body 3 in a normal state and pressed and urged in the protruding direction of the dead bolt D34.
The stopper 312 of the dead bolt body 3 is as already described in the description of the configuration of the dead bolt body 3.
The pull-in guide 43 of the latch 4 is as already described in the description of the configuration of the latch 4.
The deadbolt extension mechanism 5 is configured as described above. Normally, the deadlock body 3 is pulled inwardly from the lock surface 101 of the lock case 1 by the latch 4 by rotating the cylinder lock 2 to the unlocking position with a key. By rotating the cylinder lock 2 to the locking position with the key, the latch 4 protrudes from the distal end portion of the dead bolt body 3, and the dead bolt body 3 is moved outward from the lock surface 101 of the lock case 1 by the latch 4. It is made to project, is brought into contact with a contact surface or a contact member provided in the vicinity of the receiving part on the door frame side, protrudes to a normal protruding length, is engaged with the receiving part 61 on the door frame side, and is attached to the door. When an external force is applied destructively and the dead bolt main body 3 is pulled away from the receiving portion 61, the dead bolt main body 3 is made to follow the contact surface or the contact member and exceeds a normal protruding length. And adapted to engage the receiving portion 61 in protrusion length.
In this case, the inner surface of the door frame may be used as the contact surface on the door frame side that contacts the dead bolt D34, or another member may be provided on the inner surface of the door frame as the contact member. Good. When using another member, the mounting part of the receiving part may be used as the contact member, or a dedicated contact member may be formed. FIG. 6 and FIG. 7 illustrate the case where the mounting part of the receiving part is an impact member. FIG. 6 shows a case in which the receiving portion is a pin 61. In this case, a bearing 62 having a substantially U-shaped cross section is attached to the inner surface of the door frame with the flat fixing portion 621 at the middle portion fixed, and the pin 61 is vertically oriented. The contact member is arranged via the bearing 62, and the flat fixing portion 621 at the middle portion of the bearing 62 is opposed to the tip of the dead bolt D34. FIG. 7 shows a case where the receiving portion is an edge of a plate (plate material) 63. In this case, a plate 63 having a substantially J-shaped cross section is attached to the inner surface of the door frame with the flat surface fixing portion 631 fixed thereto. The edge is arranged vertically, and the flat surface fixing portion 631 of the plate 63 is opposed to the tip of the dead bolt D34 to form an abutting member.

FIG. 8 shows the operation of the deadbolt lock U. In this case, the dead bolt lock U is attached to the sheet metal door, and a pin 61 is provided on the inner surface of the door frame as a receiving portion of the dead bolt D34.
8 (a1) and 8 (b1), the deadbolt body 3 is pulled into a predetermined deadbolt retracting position on the inside from the lock surface 101 of the lock case 1, and the latch 4 in the lock case 1 The cylinder lock 2 is in an unlocked state with the latch 4 being pulled into the slide guide 34 and being inserted into the tip of the dead bolt body 3. In this case, the lever 22 of the cylinder lock 2 is at the rotation start end position, and the pin 221 at the tip of the lever 22 is engaged with the stopper groove 430 of the pull-in guide 43 of the latch 4.
From this state, as shown in FIGS. 8 (a2) and (b2), when the lever 22 is rotated from the rotation start end position toward the rotation end position by the locking operation of the cylinder lock 2, the lever 22 tip portion The pin 221 is moved from the stopper groove 430 of the pull-in guide 43 to the guide groove 431 so that the movement restriction of the latch 4 by the lever 22 is released, and the latch 4 moves inside the slide guide 34 of the dead bolt body 3 by the biasing force of the spring member 351. The dead bolt D34 is slid in the protruding direction, and the latch 4 slides to engage and press the protruding direction locking portion 41 of the latch 4 with the engaging portion 36 of the dead bolt main body 3. At the same time, it moves in the lock case 1 toward the entrance / exit 100 and protrudes outward from the entrance / exit 100. At this time, when the dead bolt body 3 is projected to the normal projecting length so as to be engageable with the receiving portion 61 of the door frame, the latch 4 projecting from the tip of the dead bolt body 3 is connected to the contact member (bearing of the bearing). It is brought into contact with the intermediate fixing portion) and engaged with the pin 61 (receiving portion) of the door frame. Thereby, the cylinder lock 2 is locked and the door is locked by the dead bolt D34 in the locked state.
Then, when the door is locked by the dead bolt lock U, when an external force is applied to the door destructively and the dead bolt D34 is pulled away from the pin 61, it is shown in FIGS. 8 (a3) and 8 (b3). As described above, the dead bolt body 3 extends following the contact member on the door frame side by the biasing force of the spring member 351, and is engaged with the pin 61 with a projection length longer than the normal projection length. Due to the engagement of the extending dead bolt D34 and the pin 61, even if the sheet metal door is strongly destructively pulled and deformed, and a large force in the pulling direction is applied to the dead bolt D34, the dead bolt D34 is detached from the pin 61. The door is locked by the dead bolt D34.
When the door is unlocked from the normal locked state, when the lever 22 is rotated from the rotation end position toward the rotation start end position by the unlocking operation of the cylinder lock 2, FIGS. b2) and the pins 221 at the tip of the lever 22 engage with the guide groove 431 of the pull-in guide 43 of the latch 4 and move along the guide groove 431, as shown in FIGS. 8 (a1) and 8 (b1). However, the latch 4 is pressed in the retracting direction of the dead bolt D34, the latch 4 slides in the sliding guide 34 of the dead bolt body 3 in the retracting direction of the dead bolt D34, and is inserted into the tip of the dead bolt body 3. By the sliding of the latch 4, the retracting direction locking portion 42 of the latch 4 is engaged and pressed with the engaging portion 36 of the dead bolt body 3, so that the dead bolt body 3 and the latch 4 are locked. Moves from one infested opening 100 in the lock casing 1, is immersed in infested port 100. In this state, the lever 22 is returned to the rotation start end position, and the pin 221 at the tip of the lever 22 enters the stopper groove 430 of the latch 4 to maintain this unlocked state.

  As described above, according to the dead bolt lock U, the dead bolt D34 is provided with the dead bolt main body 3 and the latch 4 disposed on the dead bolt main body 3 so as to be able to protrude and retract from the tip of the dead bolt main body 3. The deadbolt extension mechanism 5 is provided between the deadbolt D34 and the cylinder lock 2, and the deadbolt D34 that protrudes outward from the lock surface 101 of the lock case 1 is usually provided at the tip of the deadbolt body 3. By engaging the contact surface or contact member provided near the receiving portion 61 on the door frame side via the latch 4 protruding from the door, the receiving portion 61 is engaged with the normal protruding length, When an external force is applied destructively and the dead bolt D34 is pulled away from the receiving portion 61, the dead bolt body 3 is extended following the contact surface or contact member on the door frame side, and the normal protruding length Since it is made to engage with the receiving portion 61 with a longer projection length, when this dead bolt lock U is attached to a sheet metal door and used, even if the sheet metal door is strongly pulled and deformed, it is dead It is possible to prevent the door from opening by preventing the bolt D34 from being removed from the receiving portion or making it difficult to remove. In addition, since the latch 4 is protruded from the tip of the dead bolt body 3, a sufficient protruding length can be secured for the dead bolt D34 itself.

In this deadbolt lock U, the latch 4 is projected from the tip of the deadbolt body 3 in order to ensure a sufficient projection length for the deadbolt D34. If the length can be secured, the latch 4 may be configured as an operating member for operating the dead bolt D34, without being configured to protrude from the tip of the dead bolt main body 3.
In this case, the deadbolt lock includes a lock case attached to the door, a cylinder lock having a lever attached to the lock case and provided with a protrusion at the tip which can be rotated in the lock case, and the case in the lock case. It is arranged to be able to protrude and retract from the lock surface of the cylinder, and it is equipped with a dead bolt that is operatively connected to the rotation lever of the cylinder lock through a protrusion, and interlocks with the cylinder lock by rotating the cylinder lock in the locking direction by key operation Then, the dead bolt protrudes outward from the lock surface of the lock case and is engaged with the receiving part on the door frame side, and the cylinder lock is rotated in the unlocking direction by a key operation, so that the dead bolt is locked on the lock surface of the lock case. The cylinder lock is rotated in the locking direction by a key operation between the dead bolt and the cylinder lock. In conjunction with the cylinder lock, a dead bolt extension mechanism that elastically protrudes the dead bolt from the lock surface of the lock case to a predetermined protrusion length that exceeds the normal protrusion length that can be engaged with the receiving portion of the door frame. In general, the dead bolt that protrudes outward from the lock surface of the lock case is brought into contact with the contact surface or contact member provided near the receiving portion on the door frame side, so that the receiving portion has a normal protruding length. When an external force is destructively applied to the door and the dead bolt is pulled away from the receiving part, the dead bolt extends following the contact surface or contact member on the door frame side, It is assumed that the receiving portion is engaged with a protruding length longer than the protruding length.
The deadbolt extension mechanism includes an operating member disposed on the deadbolt so as to be slidable in a movable direction of the deadbolt via a slide guide, and a deadbolt body in a direction substantially perpendicular to the movable direction of the deadbolt. The engaging portion provided in a convex shape and the operating member projecting in a direction substantially perpendicular to the moving direction of the dead bolt, and the dead bolt is engaged by sliding the operating member on the dead bolt in the projecting direction of the dead bolt. Engaging and pressing the joint part, the projecting direction locking part projecting the dead bolt from the lock surface of the lock case, and the dead bolt engaging part by sliding in the dead bolt retracting direction on the dead bolt of the operating member Engaging and pressing, pulling the dead bolt inward from the lock surface of the lock case, and the pulling direction locking portion, and the dead bolt A predetermined projecting length that exceeds the normal projecting length by pushing and urging the ejecting direction and pressing the engaging part of the dead bolt at the projecting direction locking part of the actuating member outward from the lock surface of the lock case This is provided on the dead bolt and the spring member that protrudes to the depth, and the rotation of the lever of the cylinder lock is restricted with the dead bolt protruding from the lock surface of the lock case to the predetermined protruding length exceeding the normal protruding length. The cylinder lock is locked when the dead bolt is protruded outward from the lock surface of the lock case to the normal protruding length by pressing the engaging part of the dead bolt with the stopper in the protruding direction of the actuating member and the operating member. The cylinder lock takes the unlocked position in the state where the dead bolt is pulled from the lock surface of the lock case to the inner retracted position by pressing the engaging portion of the dead bolt with the pulling direction locking portion of the operating member, The actuating member is formed on the actuating member so as to be engageable with a protrusion of a lever that is rotated between the locking position and the unlocking position of the cylinder lock. A pull-in guide that pulls the dead bolt into the inner pull-in position from the lock surface of the lock case by pressing the engaging part of the dead bolt at the feeding and pulling direction locking part of the operation member. By rotating the unlocking position to the unlocking position, the dead bolt is pulled inward from the lock surface of the lock case by the operating member, and by rotating the cylinder lock to the locking position by the key, the dead bolt is locked by the operating member. It protrudes outward from the lock surface of the door, contacts the contact surface or contact member provided near the receiving part on the door frame side, protrudes to the normal protruding length, and engages with the receiving part on the door frame side. When a dead bolt is pulled away from the receiving part when a destructive external force is applied to the door, the dead bolt is made to follow the contact surface or the contact member, and the specified protrusion length exceeds the normal protrusion length. Now, it only has to be engaged with the receiving portion.
Even in this case, when this dead bolt lock is attached to a sheet metal door, even if the sheet metal door is destructively pulled and deformed, the dead bolt is not removed from the receiving part or is difficult to be removed. Thus, the door can be prevented from opening.

9 and 10 show another deadbolt lock U2.
As shown in FIGS. 9 and 10, the deadbolt lock U <b> 2 is mounted on the door and the lock case s <b> 1, and is rotated in the lock case s <b> 1, as with the deadbolt lock U described above. A cylinder lock s2 having a lever s22 provided with a protrusion s221 at a possible tip, and a lock case s1 that can be protruded and retracted from a lock surface s101 of the case s1, and is disposed on the lever s22 of the cylinder lock s2 via the protrusion s221. The dead bolt sD34 protrudes outward from the lock surface s101 of the lock case 1 in conjunction with the cylinder lock s2 by rotating the cylinder lock s2 in the locking direction by a key operation. The dead bolt sD34 is locked by engaging the receiving part on the door frame side and rotating the cylinder lock s2 in the unlocking direction by a key operation. It is drawn from the tablet surface s101 of over scan s1 inwardly takes the form of being separated from the receiving portion of the door frame side.
In this dead bolt lock U2, in particular, the dead bolt sD34 is composed of a dead bolt main body s3 and a latch s4 disposed on the dead bolt main body s3 so as to be able to protrude and retract from the tip of the dead bolt main body s3. Between the bolt body s3 and the latch s4, the latch s4 can be elastically projected from the tip of the dead bolt body s3 so that the dead bolt s3 can be engaged with the receiving portion of the door frame from the lock surface of the lock case s1. A deadbolt extension mechanism s5 that protrudes to a predetermined protrusion length that exceeds the normal protrusion length is provided. Usually, a deadbolt sD34 that protrudes outward from the lock surface s101 of the lock case s1 is provided, and a latch s4 is a receiving portion on the door frame side. Engage with the receiving part with a normal protruding length by making contact with the contact surface or contact member provided in the vicinity and immersing it in the tip of the dead bolt body s3. When an external force is applied to the door destructively and the dead bolt s3 is pulled away from the receiving portion, the latch s4 follows the receiving portion and protrudes from the tip of the dead bolt main body s3. It is made to engage with a receiving part with the protrusion length longer than this.

  As shown in FIGS. 9 and 10, the lock case s <b> 1 includes a substantially box-shaped main body case s <b> 10 having an opening on the front surface, and a lid s <b> 11 attached to the front opening of the main body case s <b> 10 and closing the front opening. . In this case, the main body case s10 is formed in a substantially rectangular box shape, and includes a back surface and four side surfaces. One side surface of the four side surfaces is a lock surface s101, and an entrance / exit s100 for a dead bolt sD34 is formed in the center thereof. The The main body case s10 has screw insertion portions s102 for attachment screws formed at the four corners of the back surface, and screw seats s103 are attached in the vicinity of the inner sides of the respective screw insertion portions s102 on one diagonal line. The lid s11 is made of a substantially rectangular plate corresponding to the front opening of the main body case s10, and the four corners are cut out so that mounting screws can be inserted, and screw insertion portions s113 are formed at positions corresponding to the screw seats s103 of the main body case s10. It is formed. In this way, the lock case s1 is assembled by incorporating the members constituting the dead bolt sD34 and the dead bolt extension mechanism s5 into the main body case s10, and attaching the lid s11 to the front opening of the main body case s10. The lid s11 is attached to the main body case s10 by fastening the screws passed from the screw insertion portions s113 to the screw seats s103 of the main body case s10. Further, in the lock case s1, the lever s22 (a stopper engaging portion s223 described later) is engaged at a predetermined position around the rotation area of the lever s22 of the cylinder lock s2, and the rotation of the lever s22 is restricted. A stopper (not shown) is also provided, and the lever s22 is rotated between a predetermined rotation start end position and a predetermined rotation end position.

  As shown in FIGS. 9 and 10, the cylinder lock s2 has a key hole s20 formed from the front side to the back side of the rotor s21, and a pin as a protrusion s221 is formed at the end of the back side of the rotor s21. A lever (rotating cam) s22 is attached to protrude in the radial direction of the rotor s21. The cylinder lock s2 is connected to the approximate center of the lid s11 of the lock case s1, the lever s22 is rotatably disposed in the main body case s10, and the pin s221 of the lever s22 projects toward the back surface of the main body case s10. Is done. In this way, the key (not shown) is inserted into the key hole s20 of the cylinder lock s2, and the lever s22 is set within a predetermined angle range around the axis of the cylinder lock s2 within the lock case s1 by rotating the key. It is possible to rotate between a predetermined rotation start position (this position becomes the unlocking position of the cylinder lock s2) and a predetermined rotation end position (this position becomes the locking position of the cylinder lock s2). Composed. The shape and configuration of the lever s22 are shown in FIG. In this case, the lever s22 has an approximate shape, the distal end is formed in a small-diameter arc shape, the base end is formed in a large-diameter arc, and a pin s221 projects from the side surface of the distal end, Stopper engaging portions s223 are formed at both ends of the arc-shaped portion so as to be engageable with a stopper (not shown) in the main body case s10, and the base end portion is fixed to the end portion of the rotor s21 via a screw.

As shown in FIG. 10, the dead bolt sD34 includes a dead bolt main body s3 and a latch s4. The latch s4 is formed so as to be disposed along both sides of the dead bolt main body s3, and dead along both sides of the dead bolt main body s3. The bolt sD34 is slidable in the movable direction.
The deadbolt extension mechanism s5 is provided between the deadbolt body s3 and the latch and s4, and guides sG34 that slidably guides the latch s4 in the movable direction of the deadbolt sD34 on both sides of the deadbolt body s3, and the deadbolt body s3. On both sides, the latch s4 is in a normal state and is pressed and urged in the protruding direction of the dead bolt sD34, the latch s4 is protruded from the tip of the dead bolt main body s3, and the dead bolt sD34 is protruded outward from the lock surface s101 of the lock case s1. A spring member s38 extending to a predetermined protruding length exceeding the normal protruding length.

As shown in FIG. 12, the dead bolt body s3 has a substantially flat base portion s30 and a latch portion s33 protruding from one side edge portion of the base portion s30, and a pin of the lever s22 of the cylinder lock s2 on the base portion s30. The cylinder lock s2 is operatively connected to s221, and the cylinder lock s2 is rotated in the locking direction by a key operation so that the dead bolt sD34 projects outwardly from the lock surface s101 of the lock case s1 in conjunction with the cylinder lock s2. By rotating in the unlocking direction by a key operation, a guide hole s31 is formed to draw the dead bolt sD34 inward from the lock surface s101 of the lock case s1, and the latch s4 is moved in the latching portion s33 in the movable direction of the dead bolt sD34. A guide surface s34 for guiding and a guide pin s35 are provided.
In this case, the base portion s30 is formed in a thin flat plate shape having a square shape in front view, and a guide hole s31 is formed in a position close to the upper corner portion on the side edge portion side. This guide hole s31 is formed such that the upper and lower edges thereof are linearly formed in the horizontal direction, and the side edge portion near the center is formed linearly in the vertical direction, and this causes the dead bolt sD34 to be inward from the lock surface s101 of the lock case s1. There is no pull-in guide s311 for pulling in, the upper part of the edge on the one side edge side is parallel to the pull-in guide s311, and the edge middle part on the one side edge side is inclined in the direction away from the pull-in guide s311. The lower part of the edge on the part side is formed in parallel with the pull-in guide s311, and this becomes a protruding guide s312 for protruding the dead bolt sD34 outward from the lock surface s101 of the lock case 1. The base portion s30 is formed with attachment grooves s32 for attaching the spring members s38 to the upper and lower portions of one side edge portion, respectively.
The latch portion s33 is formed at the front side of an elongated plate-like portion s331 having a square front view and continuous at the center of one side edge of the base portion s30, and the protrusion and protrusion of the lock surface s101 of the lock case s1. A block-like portion s332 having a square front view that can be inserted through the mouth s100. A groove s36 having a U-shaped cross section is formed on the surface of the plate-like portion 331 of the latch portion s33 (when assembled in the lock case s1) on the back side, and one side of the groove s36 on the block-like portion s332 side. The edge is a surface that protrudes in a direction substantially perpendicular to the movable direction of the dead bolt sD34, and forms an engaged portion s37 that can be engaged with the engaging portion s43 of the latch s4.
In addition, the upper and lower surfaces of the block-shaped portion s332 (when assembled in the lock case s1) are formed flat to form a guide surface s34 of the latch s4, and between the central portions of these guide surfaces s34 A guide pin insertion portion s350 is formed to pass therethrough, and a guide pin s35 is passed through the guide pin insertion portion s350, and the guide surface s34 and the guide pin s35 move and guide the latch s4 in the movable direction of the dead bolt sD34. It has become.
As shown in FIG. 13, the latch s4 is formed in a substantially U-shape when viewed from the front, and has a pair of latch portions s41 and a connecting portion s42 that connects between the base ends of the latch portions s41, and these latch portions s41. Is formed so as to be slidable along the upper and lower sides of the latch portion s33 of the dead bolt body s3, and the inner surface of the connecting portion s42 is engaged with the engaging portion s43 engaged with the engaged portion s37 of the dead bolt body s3. It has become.
In this case, the pair of latch portions s41 are each formed in a square block shape longer than the block-shaped portion s332 of the dead bolt main body s3, and the front end portion is formed with an angle on the back side and is tapered. Further, a guide groove s411 that can be engaged with the guide pin s35 of the dead bolt main body s3 is formed on the inner side surface of the latch portion s41 in the horizontal direction at the intermediate position in the width direction.
The connecting portion s42 is formed in a square block shape between the base end portions of the latching portions s41 (when assembled in the lock case s1) and close to the back side of each latching portion s41. The side surface is a surface that protrudes in a direction substantially perpendicular to the movable direction of the dead bolt sD34, and forms an engaging portion s43 that can be engaged with the engaged portion s37 of the dead bolt main body s3. Further, mounting grooves s44 for mounting the spring member s38 are formed on both the upper and lower ends of the outer surface of the connecting portion s42 so as to face the mounting grooves s32 on one side edge of the dead bolt body s3.
Thus, in the latch s4, the latch portions s41 are arranged in parallel along the guide surfaces s34 on both sides of the latch portion s33 of the dead bolt body s3, and the engaged portions s43 of the latch s4 and the dead bolt body s3 are engaged. The portions s37 are arranged so as to be able to engage with each other, the guide pins s35 passed through the latch portions s33 of the dead bolt body s3 are inserted into the guide grooves s411 of the latch portions s41 of the latches s4, and the latch s4 is Each of the guide surfaces s34 of the latching part s33 of the deadbolt body s3, the guide pin s35, the engaged part s37, and the guides of the latching parts s41 of the latch s4. The guide sG34 of the dead bolt extending mechanism 5 is configured by the groove s411 and the engaging portion s43 of the connecting portion s42. A coil spring s38 (see FIG. 10) is attached between each attachment groove s44 of the connecting portion s42 of the latch s4 and each attachment groove s32 of the base portion s30 of the dead bolt body s3 opposite to the attachment groove s44. Due to the biasing force of the spring s38, the latch s4 is normally pressed toward the tip on both sides of the dead bolt body s3, and the engaging portion s43 of the latch s4 and the engaged portion s37 of the dead bolt body s3 are engaged. Then, a state is taken in which the dead bolt body s3 is elastically protruded by a predetermined length from the tip portion. The coil spring s38 forms a spring member s38 of the dead bolt extension mechanism 5.

The dead bolt sD34 and the dead bolt extension mechanism s5 are configured as described above. As shown in FIG. 10, the dead bolt main body s3 and the latch s4 are retracted from the lock surface s101 of the lock case s1 to the inner retracted position. With the lock s2 in the unlocked position and the dead bolt body s3 protruding outward from the lock surface 101 of the lock case s1 to the normal protruding length, the cylinder lock s2 takes the locking position, and usually the cylinder lock s2 is The dead bolt body s3 is pulled inwardly from the lock surface s101 of the lock case s1 together with the latch s4 by rotating to the unlocking position with the key, and the deadlock is made by rotating the cylinder lock s2 to the locking position with the key. The bolt body s3 and the latch s4 project outward from the lock surface s101 of the lock case s1, and the The s4 is brought into contact with a contact surface or a contact member provided in the vicinity of the receiving portion on the door frame side so as to be immersed in the leading end portion of the dead bolt body s3, and the dead bolt sD34 has a normal protruding length on the door frame side. When the deadbolt sD34 is pulled away from the receiving portion when the door is engaged with the receiving portion and the dead bolt sD34 is pulled away from the receiving portion, the latch s4 is brought into contact with the contact surface or the contact member. The dead bolt sD34 is engaged with the receiving portion with a protruding length exceeding the normal protruding length.
In this case as well, the inner surface of the door frame may be used as the contact surface on the door frame side that contacts the dead bolt sD34, and another member is provided on the inner surface of the door frame as the contact member. Also good. When another member is used, a part of the receiving portion may be used as a contact surface, or a dedicated contact member may be formed. FIG. 14 shows an example of the receiving portion s61 of the dead bolt lock U2. As shown in FIG. 14, the receiving portion s61 includes a vertically elongated flat plate portion s611 and a fan-shaped block portion s612 having a central angle of 90 ° extending in a right-angle direction from one side portion of the flat plate portion s611. The flat plate portion s611 is provided with mounting screw insertion portions on the upper and lower sides thereof, and the flat plate portion s611 is attached to the inner surface of the door frame with screws, and dead on the plane of the block portion s612 perpendicular to the plane of the flat plate portion s611. The dead bolt sD34 of the bolt lock U2 is engaged. In the case of this receiving part s61, the middle part of the flat plate part s611 is opened, and the upper and lower parts serve as the contact surface of the dead bolt sD34.

FIG. 15 shows the operation of the deadbolt lock U2. In this case, the dead bolt lock U2 is attached to the sheet metal door, and the receiving portion s61 shown in FIG. 14 is attached to the inner surface of the door frame.
15 (a1) and 15 (b1), the deadbolt body s3 is pulled together with the latch s4 from the lock surface s101 of the lock case s1 to a predetermined deadbolt retracting position inside, and the cylinder lock s2 is in an unlocked state. . In this case, the lever s22 of the cylinder lock s2 is at the rotation start end position, and the pin s221 at the tip of the lever s22 is engaged with the pull-in guide s311 of the guide hole s31 of the dead bolt body s3.
From this state, when the lever s22 is rotated from the rotation start end position toward the rotation end position by the locking operation of the cylinder lock s2, the pin s221 at the tip of the lever s22 is moved from the retracting guide s311 to the protruding guide s312. As shown in FIGS. 15 (a2) and 15 (b2), the dead bolt body s3 moves together with the latch s4 toward the entrance / exit s100 in the lock case s1, as shown in FIGS. It protrudes outward from s100. At this time, when the dead bolt main body s3 protrudes to a normal protruding length so as to be engageable with the receiving portion s61 of the door frame, the latches s4 on both sides of the dead bolt main body s3 are positioned at the tip of the dead bolt main body s3. The contact portion s61 comes into contact with the contact portion s61 and is engaged with the reception portion s61. Thereby, the cylinder lock s2 is locked and the door is locked by the dead bolt sD34 in the locked state.
Then, when the door is locked by the dead bolt lock U2, external force is applied to the door in a destructive manner, and when the dead bolt sD34 is pulled away from the receiving portion s61, FIG. 15 (a3), (b3) As shown, the latches s4 on both sides of the dead bolt main body s3 project (elongate) from the tip of the dead bolt main body s3 following the contact surface of the receiving section s61 by the biasing force of the coil spring s38. Is also engaged with the receiving portion s61 with a long protruding length. Even when the extending dead bolt sD34 and the receiving portion s61 are engaged, the sheet metal door is destructively strongly pulled and deformed, and a large force in the pulling direction is applied to the dead bolt sD34. The door is locked or not easily removed, and the door is locked by the dead bolt sD34.
When the door is unlocked from the normal locked state, when the lever s22 is rotated from the rotation end position toward the rotation start end position by the unlocking operation of the cylinder lock s2, the doors shown in FIGS. b1), the pin s221 at the tip of the lever s22 is moved from the protruding guide s312 of the guide hole s31 of the dead bolt main body s3 to the pulling guide s311 and engaged with and pressed against the pulling guide s311. s3 moves together with the latch s4 from the entrance / exit s100 of the lock case s1 into the lock case s1, and is inserted into the entrance / exit s100. In this state, the lever s22 is returned to the rotation start position, and the cylinder lock s2 is unlocked.

  As described above, according to the deadbolt lock U2, the deadbolt sD34 is provided with the deadbolt body s3 and the latch s4 disposed on the deadbolt body s3 so as to be able to protrude and retract from the tip of the deadbolt body s3. The deadbolt extension mechanism s5 is provided between the deadbolt body s3 and the latch s4. Usually, the deadbolt sD34 that protrudes outward from the lock surface s101 of the lock case s1 is provided, and the latch s4 is provided on the door frame side. By engaging the contact surface or contact member provided in the vicinity of the receiving portion s61 and immersing it in the tip of the dead bolt main body s3, it engages with the receiving portion s61 with a normal protruding length and is destructive to the door. When an external force is applied to the dead bolt s3 and the dead bolt s3 is pulled away from the receiving portion s1, the leading end of the dead bolt main body s3 is caused to follow the receiving portion s61 of the latch s4. Since the projecting part is engaged with the receiving part s61 with a projecting length longer than a normal projecting length, when the dead bolt lock U2 is attached to the sheet metal door, the sheet metal door is strengthened destructively. Even if it is pulled and deformed, the dead bolt sD34 can be prevented from being removed from the receiving portion s61 or can be prevented from coming off, thereby preventing the door from opening. In addition, since the latch s4 protrudes from the tip on both sides of the dead bolt body s3, a sufficient projecting length can be secured for the dead bolt sD34 itself.

U dead bolt lock 1 lock case 10 main body case 100 entrance / exit 101 lock face 102 screw insertion part 103 screw seat 104 stopper 11 lid 113 screw insertion part 2 cylinder lock 20 key hole 21 rotor 22 lever (rotating cam)
220 Circular part 221 Protrusion (pin)
222 Lever part 223 Stopper engaging part D34 Dead bolt 3 Dead bolt main body 31 Latch part 310 Recessed part 311 Convex part 312 Stopper 32 Latch part 320 Concave part 321 Convex part 33 Connecting part 34 Slide guide 350 Mounting groove 351 Spring member ( coil spring)
36 Engagement part 4 Latch 40 Concave part 41 Protrusion direction locking part 42 Retraction direction locking part 43 Retraction guide 430 Stopper groove 431 Guide groove 44 Recess 45 Mounting groove 5 Dead bolt extension mechanism 61 Pin (receiving part)
62 Bearing 621 Flat surface fixing part 63 Plate (receiving part)
631 Plane fixing part U2 Dead bolt lock s1 Lock case s10 Main body case s100 Recession opening s101 Lock surface s102 Screw insertion part s103 Screw seat s11 Lid s113 Screw insertion part s2 Cylinder lock s20 Key hole s21 Rotor s22 Lever (Rotating cam)
s221 Protrusion (pin)
s222 Lever part s223 Stopper engaging part sD34 Dead bolt sG34 Guide s3 Dead bolt body s30 Base part s31 Guide hole s311 Retraction guide s312 Projection guide s32 Mounting groove s33 Hatch part s331 Plate-like part s332 Block-like part s34 Guide surface s35 Guide surface s35 s350 Guide pin insertion part s36 Groove s37 Engaged part s38 Spring member (coil spring)
s4 latch s41 latching part s411 guide groove s42 connection part s43 engagement part s44 mounting groove s5 dead bolt extension mechanism s61 receiving part s611 flat plate part s612 block part

Claims (6)

A lock case attached to the door, a cylinder lock having a lever attached to the lock case and provided with a protrusion at a tip end rotatable in the lock case; and a lock surface of the case in the lock case A dead bolt that is arranged so as to be capable of appearing and retracting and is operatively connected to the rotation lever of the cylinder lock via the protrusion, and by rotating the cylinder lock in a locking direction by a key operation, In conjunction with this, the dead bolt protrudes outward from the lock surface of the lock case and is engaged with the receiving portion on the door frame side, and the cylinder lock is rotated in the unlocking direction by a key operation, whereby the dead bolt is In the dead bolt lock of the type that is pulled inward from the lock surface of the lock case and detached from the receiving part on the door frame side,
By rotating the cylinder lock in a locking direction by a key operation between the dead bolt and the cylinder lock, the dead bolt is moved from the lock surface of the lock case to the door frame in conjunction with the cylinder lock. A deadbolt extension mechanism that elastically protrudes to a predetermined protrusion length that exceeds a normal protrusion length that can be engaged with the receiving portion of
Usually, the dead bolt that protrudes outward from the lock surface of the lock case is brought into contact with the contact surface or contact member provided in the vicinity of the receiving portion on the door frame side, so that the normal protruding length is obtained. Engaging the receiving part,
When an external force is destructively applied to the door, and the dead bolt is pulled away from the receiving portion, the dead bolt extends following the contact surface or the contact member on the door frame side, Engaged with the receiving part with a longer projecting length than the normal projecting length,
A deadbolt tablet characterized by that. Deadbolt extension mechanism
An operating member disposed on the dead bolt so as to be slidable in a movable direction of the dead bolt via a slide guide;
An engaging portion provided on the dead bolt body in a convex shape in a direction substantially perpendicular to the movable direction of the dead bolt;
The operating member protrudes in a direction substantially perpendicular to the moving direction of the dead bolt, and the dead bolt slides in the protruding direction of the dead bolt on the dead bolt to the engaging portion of the dead bolt. A projecting direction locking part that engages and presses and projects the dead bolt from the lock surface of the lock case, and sliding of the operating member on the dead bolt in the retracting direction of the dead bolt Engaging and pressing the engaging portion, and pulling the dead bolt inward from the lock surface of the lock case;
On the dead bolt, the operating member is in a normal state and pressed and urged in the projecting direction of the dead bolt, and the engaging portion of the dead bolt is pressed by the projecting direction locking portion of the operating member. A spring member that protrudes outward from the lock surface of the lock case to a predetermined protrusion length that exceeds a normal protrusion length;
The cylinder lock is in a state where the engaging portion of the dead bolt is pressed by the protruding direction locking portion of the actuating member so that the dead bolt protrudes outward from the lock surface of the lock case to a normal protruding length. Taking the locking position, pressing the engagement portion of the dead bolt with the pulling direction locking portion of the actuating member to pull the dead bolt from the lock surface of the lock case to the inner pulling position. The cylinder lock takes an unlocking position, and is formed on the operating member so as to be engageable with a protrusion of the lever that is rotated between the locking position and the unlocking position of the cylinder lock, and the operating member is formed by the spring member. The dead bolt is fed in the pull-in direction of the dead bolt against the urging force, and the engaging portion of the dead bolt is pressed by the pull-in direction locking portion of the actuating member to hold the dead bolt in the lock case. A guide pull retracting from the lock surface on the inner side of the retracted position,
With
Normally, by rotating the cylinder lock to the unlocked position with the key, the dead bolt is pulled inward from the lock surface of the lock case by the operating member, and the cylinder lock is rotated to the locked position with the key. Accordingly, the dead bolt is projected outward from the lock surface of the lock case by the actuating member, and is brought into contact with an abutting surface or an abutting member provided in the vicinity of the receiving portion on the door frame side. Let it protrude to the protruding length, engage with the receiving part on the door frame side,
When an external force is applied to the door in a destructive manner and the dead bolt is pulled away from the receiving portion, the dead bolt is caused to follow the abutting surface or the abutting member to exceed the normal protruding length. Engaging the receiving part with a predetermined protruding length,
The deadbolt tablet according to claim 2. A lock case attached to the door, a cylinder lock having a lever attached to the lock case and provided with a protrusion at a tip end rotatable in the lock case; and a lock surface of the case in the lock case A dead bolt that is arranged so as to be capable of appearing and retracting and is operatively connected to the rotation lever of the cylinder lock via the protrusion, and by rotating the cylinder lock in a locking direction by a key operation, In conjunction with this, the dead bolt protrudes outward from the lock surface of the lock case and is engaged with the receiving portion on the door frame side, and the cylinder lock is rotated in the unlocking direction by a key operation, whereby the dead bolt is In the dead bolt lock of the type that is pulled inward from the lock surface of the lock case and detached from the receiving part on the door frame side,
The dead bolt is composed of a dead bolt main body and a latch disposed in the dead bolt main body so as to be able to protrude and retract from a tip end portion of the dead bolt main body.
By rotating the cylinder lock in the locking direction by a key operation between the dead bolt and the cylinder lock, the latch is protruded from the tip of the dead bolt body in conjunction with the cylinder lock. A deadbolt extension mechanism that elastically protrudes the deadbolt body from a lock surface of the lock case to a predetermined protrusion length exceeding a normal protrusion length that can be engaged with the receiving portion of the door frame,
Usually, the dead bolt that protrudes outward from the lock surface of the lock case is brought into contact with the contact surface or bump provided near the receiving portion on the door frame side via the latch that protrudes from the tip of the dead bolt main body. By engaging the contact member, it is engaged with the receiving portion with the normal protruding length,
When an external force is destructively applied to the door and the dead bolt is pulled away from the receiving portion, the dead bolt body extends following the contact surface or the contact member on the door frame side, Engaged with the receiving part with a longer projecting length than the normal projecting length,
A deadbolt tablet characterized by that. The latch is disposed on the dead bolt body so as to be slidable in the movable direction of the dead bolt via a slide guide.
Deadbolt extension mechanism
An engaging portion provided on the dead bolt body in a convex shape in a direction substantially perpendicular to the movable direction of the dead bolt;
The latch projects from the dead bolt in a direction substantially perpendicular to the movable direction of the dead bolt, and slides in the projecting direction of the dead bolt on the dead bolt main body to the engagement portion of the dead bolt main body. A projecting direction latching portion that engages and presses and causes the deadbolt body to project from the lock surface of the lock case, and the deadbolt body by sliding the latch in the retracting direction of the deadbolt on the deadbolt body Engaging and pressing the engagement portion, and pulling the dead bolt body inward from the lock surface of the lock case;
On the deadbolt main body, the latch is normally pressed and urged in the protruding direction of the deadbolt so that the latch protrudes from the tip of the deadbolt main body, and the protruding direction locking portion of the latch A spring member that presses the engaging portion of the dead bolt body to cause the dead bolt body to protrude outward from the lock surface of the lock case to a predetermined protruding length exceeding a normal protruding length;
The cylinder in a state where the engaging portion of the dead bolt body is pressed by the protruding direction locking portion of the latch so that the dead bolt body protrudes outward from the lock surface of the lock case to a normal protruding length. The lock takes a locking position, and the engaging portion of the dead bolt body is pressed by the pulling direction locking portion of the latch to pull the dead bolt body from the lock surface of the lock case to the inside drawing position. In this state, the cylinder lock takes an unlocking position, and is formed in the latch so as to be engageable with a pin of the lever that is rotated between the locking position and the unlocking position of the cylinder lock. The dead bolt is fed in the retracting direction of the dead bolt against the biasing force of the spring member, and the engaging portion of the dead bolt body is pressed by the retracting direction locking portion of the latch. A guide pull to retract the body from the lock surface of the lock casing in the retracted position of the inner,
With
Normally, by rotating the cylinder lock to the unlocking position with the key, the dead bolt body is pulled inward from the lock surface of the lock case by the latch, and the cylinder lock is rotated to the locking position with the key. By operating, the latch protrudes from the tip of the dead bolt body, and the dead bolt body protrudes outward from the lock surface of the lock case by the latch and is provided near the receiving portion on the door frame side. Abutting against the abutting surface or abutting member, projecting to the normal projecting length, and engaging with the receiving portion on the door frame side,
When an external force is applied to the door in a destructive manner and the dead bolt body is pulled away from the receiving portion, the dead bolt body is caused to follow the abutting surface or abutting member and the normal projecting length. Engaging the receiving part with a protruding length exceeding
The deadbolt tablet according to claim 3. A lock case attached to the door, a cylinder lock having a lever attached to the lock case and provided with a protrusion at a tip end rotatable in the lock case; and a lock surface of the case in the lock case A dead bolt that is arranged so as to be able to appear and retract and is operatively connected to the lever of the cylinder lock via the protrusion, and by rotating the cylinder lock in a locking direction by a key operation, the cylinder lock is interlocked with the cylinder lock. The dead bolt protrudes outward from the lock surface of the lock case and is engaged with the receiving portion on the door frame side, and the deadlock is moved by the key operation in the unlocking direction. In the dead bolt lock of the type that is pulled inward from the lock surface of the case and detached from the receiving part on the door frame side,
The dead bolt is composed of a dead bolt main body and a latch disposed in the dead bolt main body so as to be able to protrude and retract from a tip end portion of the dead bolt main body.
Between the deadbolt body and the latch, the latch is elastically projected from the tip of the deadbolt body, and the deadbolt is engaged with the receiving portion of the door frame from the lock surface of the lock case. A deadbolt extension mechanism that protrudes to a predetermined protrusion length that exceeds the normal protrusion length possible,
Usually, the dead bolt projecting outward from the lock surface of the lock case is brought into contact with an abutting surface or an abutting member provided in the vicinity of the receiving portion on the door frame side so that the leading end of the dead bolt main body By immersing in the part, engage the receiving part with the normal protruding length,
When an external force is applied destructively to the door and the dead bolt is pulled away from the receiving portion, the latch follows the receiving portion and protrudes from the tip of the dead bolt main body. Engaging the receiving part with a protruding length longer than the protruding length;
A deadbolt tablet characterized by that. The latch is formed so that it can be placed along both sides of the deadbolt body,
Deadbolt extension mechanism
A guide that is provided between the deadbolt body and the latch and guides the latch so as to be slidable in the movable direction of the deadbolt on both sides of the deadbolt body;
The latch is normally pressed and urged in the protruding direction of the dead bolt on both sides of the dead bolt main body, the latch is protruded from the tip of the dead bolt main body, and the dead bolt is removed from the lock surface of the lock case. A spring member extending to a predetermined protruding length exceeding a normal protruding length protruding outward;
With
In a state where the deadbolt body is retracted together with the latch from the lock surface of the lock case to the inside retracted position, the cylinder lock takes an unlocked position, and the deadbolt body is moved outward from the lock surface of the lock case. With the cylinder protruding to the normal protruding length, the cylinder lock takes the locked position,
Usually, by rotating the cylinder lock to the unlocking position with the key, the dead bolt body is pulled inward from the lock surface of the lock case together with the latch, and the cylinder lock is rotated to the locking position with the key. By doing so, the dead bolt main body is projected outward from the lock surface of the lock case together with the latch, and the latch is brought into contact with a contact surface or a contact member provided in the vicinity of the receiving portion on the door frame side. By immersing the tip of the dead bolt body, the dead bolt is engaged with the receiving portion on the door frame side with the normal protruding length,
When an external force is applied to the door in a destructive manner and the dead bolt is pulled away from the receiving portion, the latch is caused to follow the contact surface or the contact member from the tip of the dead bolt main body, Engaging the dead bolt with the receiving portion with a protruding length exceeding the normal protruding length;
The deadbolt tablet according to claim 5.

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