JP2001055855A - Locking device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a cost and prevent crime by providing a locking device capable of fixing a number of points with a simple and inexpensive structure without requiring an auxiliary lock. SOLUTION: This locking device comprises a dead bolt 23 installed slidably in a lock box 7 disposed on a door 1 and moved to and away from a front plate of the lock box 7 by a rotatingly operated cylinder lock 9 or thumb turn 21 so as to move to and away from an end face 11 of the door 1, a sliding member 33 slid along the longitudinal direction of the end face 11 of the door 1 in connection with the rotating operation of the cylinder lock 9 or thumb turn 21, a plurality of pin-shaped engaging projections 71 provided on the sliding member 33 and projected toward a door frame, and a plurality of recessed groove-shape engaging receiving parts provided in the door frame and engaged with the engaging projections 71 when the sliding member 33 is slid.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a locking device having a plurality of locks interlocked with a final lock.

[0002]

2. Description of the Related Art An ordinary final lock that simply removes and inserts a deadbolt cannot prevent improper unlocking due to the strike and the destruction of the deadbolt in the separating direction, and does not provide sufficient locking reliability. There is. In order to reliably prevent such unauthorized unlocking, there has been proposed a locking device of a type in which a stick piece is attached to a deadbolt.

[0003] This type of locking device includes a general dead bolt that projects horizontally from the end face of the door when one of a cylinder lock and a thumb turn is rotated, and a swinging rod that is perpendicular to the front and back surfaces of the door near the dead bolt. A lock piece rotatably supported by the drive shaft is provided in the lock box. The dead bolt and the piece are interlocked with each other, for example, by engaging a long hole of the piece with a pin protruding from a side surface of the dead bolt.

In this locking device, when the cylinder lock or the thumb turn is rotated, and the dead bolt projects from the end face of the door, the stick piece is moved in an arc around the swinging axis following the dead bolt, and the tip is the door. Projecting from the end face of the trajectory in an arc-shaped trajectory. Therefore, in addition to the entry of the dead bolt into the receiving hole, the hook-like tip of the dead bolt also hooks on the back side surface of the receiving hole. As a result, it was possible to prevent a strike that could not be prevented by simply locking the deadbolt into the receiving hole and an unauthorized unlocking due to the destruction of the deadbolt in the separating direction.

[0005]

However, in the above-described conventional locking device provided with a piece of a piece, the piece of a piece is swingably provided in a lock box, and the piece and the dead bolt are connected by an interlocking mechanism. Therefore, there is a problem that the locking mechanism is complicated and large, and the device cost is high. In addition, when security is improved by multipoint tightening, a plurality of similar devices must be installed, and each device is large and expensive, so that a plurality of configurations is disadvantageous.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and provides a locking device which can be multi-point fastened with a simple and inexpensive structure without the need for an auxiliary lock. The aim is to achieve improvement at the same time.

[0007]

Next, means for solving the above problems will be described with reference to the drawings corresponding to the embodiments. Locking device 81 according to claim 1 of the present invention
Is provided so as to be slidable with respect to the lock box 7 disposed on the door 1, and advances and retreats from the front plate of the lock box 7 by the rotationally operated cylinder lock 9 or the thumb turn 21 from the end face 11 of the door 1. A sliding member 33 that slides along the longitudinal direction of the end surface 11 of the door 1 in conjunction with the moving back and forth of the dead bolt 23 and the rotation of the cylinder lock 9 or the thumb turn 21, and the sliding member 33 or the sliding member 33. A plurality of engaging projections 71 provided on one of the door frames 31 on the building frame side facing the sliding member 33 and protruding toward the other of the sliding member 33 and the door frame 31; A plurality of engagement receiving portions 73 provided on one of the sliding member 33 and the door frame 31 and engaged with each of the engagement projections 71 by sliding the sliding member 33; Specially It is set to.

In this locking device 81, when the cylinder lock 9 or the thumb turn 21 is rotated and the dead bolt 23 projects, at the same time, the sliding member 33 is slid along the end face 11 and extends over the door 1 and the door frame 31. The plurality of engaging protrusions 71 and the engaging receiving portions 73 provided are engaged with each other, and simultaneously with the final tightening by the dead bolt 23, the engaging protrusions 71 and the engaging receiving portions 73 are locked at many places. Since the plurality of engagement protrusions 71 and the engagement receiving portions 73 are engaged by sliding of one sliding member 33, multipoint tightening is possible with a simple structure. Further, since the engagement protrusion 71 and the engagement receiving portion 73 are operated by the rotation of the cylinder lock 9 or the thumb turn 21, an auxiliary lock having another structure is not required.

The locking device 91 according to the second aspect is provided so as to be slidable with respect to the lock box 7 provided on the door 1 and is rotated by the cylinder lock 9 or the thumb turn 21 which is operated by rotation.
The end face 11 of the door 1 which advances and retreats from the front plate of the lock box 7
A sliding member 33 that slides along the longitudinal direction of the end surface 11 of the door 1 in conjunction with the dead bolt 23 that advances and retreats from the deadlock 23 and the rotation operation of the cylinder lock 9 or the thumb turn 21. A plurality of engagement projections 71 provided on one of the door frames 31 on the building frame side facing the sliding member 33 and protruding toward one of the sliding member 33 and the door frame 31. And the sliding member 3
3 and a plurality of engagement receiving portions 73 that are provided on either the other of the door frame 31 and are engaged with the respective engagement protrusions 71 by sliding the sliding member 33, and are disposed on the door 1. The sliding member 33 is slid to maintain the state in which the engagement protrusion 71 and the engagement receiving portion 73 are engaged with each other, and the sliding member 33 slides. And a sub-locking means 93 for regulating the pressure.

In this locking device 91, when the cylinder lock 9 or the thumb turn 21 is operated to rotate and the dead bolt 23 projects, the sliding member 33 is simultaneously slid along the end face 11 and extends over the door 1 and the door frame 31. The plurality of engaging protrusions 71 and the engaging receiving portions 73 provided are engaged with each other, and simultaneously with the final tightening by the dead bolt 23, the engaging protrusions 71 and the engaging receiving portions 73 are locked at many places. Since the plurality of engagement protrusions 71 and the engagement receiving portions 73 are engaged by sliding of one sliding member 33, multipoint tightening is possible with a simple structure. Further, the sliding of the sliding member 33 is restricted by the sub-locking means 93, and the plurality of engagement protrusions 71 and the engagement receiving portions 7 are formed.
3 is maintained, and a double locked state is achieved, so that security is improved. Note that the sub-locking means 93 may be configured by a locking device having the same configuration as the cylinder lock 9 or the thumb turn 21 for performing the final tightening of the dead bolt 23.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a locking device according to the present invention will be described below in detail with reference to the drawings. FIG.
1 is a front view of a door provided with a locking device according to a first embodiment of the present invention, FIG. 2 is a perspective view of a guard arm lock provided in the locking device of FIG. 1, and FIG. 3 is a guard arm shown in FIG. FIG. 4 is an exploded perspective view of a main part of the locking device of FIG. 1, FIG. 5 is a view taken along the line AA of FIG. 1, and FIG. 6 is a side view of FIG. is there. As shown in FIG. 1, a handle 3 is provided on an outdoor side and / or an indoor side of the door 1, and a lock portion 5 is provided above the handle. The lock unit 5 has a lock box 7 built in the door 1.

The lock box 7 is provided with a cylinder lock 9, and the cylinder lock 9 has a key hole 9 a exposed on the outdoor surface of the door 1. A thumb turn 21 is disposed on the indoor side surface of the cylinder lock 9.

The lock box 7 has a built-in dead bolt 23 that moves forward and backward in the horizontal direction, and the dead bolt 23 projects from the end face 11 of the door 1 by rotation of either the cylinder lock 9 or the thumb turn 21. I have. The dead bolt 23 protruding from the door end face 11 enters a strike (not shown) provided on the door frame 31 on the building skeleton side to prevent the door 1 from being opened and closed, thereby locking the door 1.

The locking device 81 according to this embodiment is provided with a guard arm lock 13 including the dead bolt 23.

The guard arm lock 13 comprises a guard lock portion 15 provided on the door 1 side and a guard lock seat 17 provided on the door frame 31 side of the building frame.

The guard lock portion 15 has a dead bolt 23
The dead bolt 23 is provided with a constricted portion 23a formed at the tip end thereof, and is rotated from the cover plate 47 flush with the door end surface 11 by the rotation operation of the cylinder lock 9 or the thumb turn 21 described above. ing.

On the other hand, a base end portion of a guard arm 25 having a total length that can be extended and contracted is rotatably fixed to a guard lock receiving seat 17 attached to the door frame 31. An annular tip 27 is formed at the tip of the guard arm 25,
The annular tip 27 is disposed in a concave cutout 29 formed in the guard lock seat 17.

The constricted portion 23a at the tip of the dead bolt 23 is inserted into the annular tip 27 and the notch 29. The dead bolt 23 that has been inserted into the annular distal end portion 27 and entered the notch 29 can escape from the side opening of the notch 29 with the opening movement of the door.

When the door is closed, the guard arm lock 13 is operated to rotate the thumb turn 21 and the dead bolt 2
When 3 protrudes, the constricted portion 23a of the dead bolt 23 penetrates the annular distal end portion 27 and enters the notch 29. When the door 1 is opened in this state, the constricted portion 23a of the dead bolt 23 is engaged with the annular distal end portion 27, and the guard arm 25 rotates around the base end portion as shown in FIG. While stretching.

When the guard arm 25 reaches the extension limit,
The door 1 is fixed to the door frame 31 via the dead arm 25. As a result, the opening angle of the door 1 is regulated, so that it is possible to safely confirm a visitor. The locking device 81 according to the present invention may have a configuration without the guard arm lock 13 as a matter of course.

A sliding member 33 is provided on the end surface 11 of the door 1, and the sliding member 33 is rotated in one of the cylinder lock 9 and the thumb turn 21 in the longitudinal direction of the end surface 11 (vertical direction in FIG. 4). It slides along.

The sliding member 33 is slidably held in a groove 35 formed in the end face 11 of the door 1 as shown in FIG. 5, for example. Sliding member 33 according to this embodiment
Consists of a base material 37 and a connecting material 41 connected to both ends of the base material 37 via connecting pins 39. Connecting material 41
Can be connected to each other via a connecting pin 39.

In the present embodiment, a rack 43 is formed in the center of the base material 37, and as shown in FIG.
The base in the longitudinal direction of the base material 37 is inserted into the lock box 7. The rack 43 is a cylinder lock 9 or a thumb turn 2
6, and is slid along the end face 11 in the vertical direction of FIG. 6 by the rotation of the cylinder lock 9 or the thumb turn 21.

A cover plate 47 constituting the lock box 7 is located on the end face 11 of the door 1 and is fixed by screws 49. A collar 51 is externally inserted outside the screw 49, and the collar 51 is inserted into a long hole 53 formed in the base material 37. That is, the base material 37 is configured to be slid with respect to the collar 51 within a range in which the long hole 53 moves.

FIG. 7 is a perspective view of an engagement projection and an engagement receiving portion used in the locking device of FIG. The connecting member 41 of the sliding member 33 is provided with a plurality of lock pins 71 as engaging projections protruding toward the door frame 31 at predetermined intervals in the longitudinal direction of the sliding member 33.

The lock pin 71 comprises a base 71a and a pin 71b projecting from the base 71a and having a bulge 71c at the tip.

On the other hand, the door frame 31 is provided with a plurality of lock pin receivers 73 as engagement receiving portions facing the end face 11 at predetermined intervals in the longitudinal direction of the door frame 31. The same number of the lock pins 71 and the lock pin receivers 73 are arranged at substantially opposing positions.

The lock pin receiver 73 is, as shown in FIG.
An insertion groove 73a is formed at one end serving as a lower end and has an open end. The pin portion 71b of the lock pin 71 is moved in the insertion groove 73a in a vertical direction perpendicular to the axis of the pin portion 71b. It is to be inserted.

Pin portion 71b inserted into fitting groove 73a
As shown in FIG. 8B, the bulging portion 71c at the tip engages with the back surface of the lock pin receiver 73 as shown in FIG. That is, by locking the lock pin 71 and the lock pin receiver 73 with each other, the movement of the door 1 in the opening and closing direction is prevented, and the deformation in the direction in which the gap between the door frame 31 and the door end surface 11 is widened is also prevented. It has become.

In this embodiment, the sliding member 33
A lock pin 71 is provided on the door frame 31 and a lock pin
However, the locking device according to the present invention, on the contrary, provides the same operation and function even when the lock pin receiver 73 is provided on the sliding member 33 and the lock pin 71 is provided on the door frame 31. It is effective.

Next, the locking device 81 thus configured
The operation of will be described. FIGS. 8A and 8B are explanatory views of the locked state, in which the unlocking of the engagement protrusion and the engagement receiving portion is shown in FIG.

When the cylinder lock 9 or the thumb turn 21 is rotated, for example, at an angle of 45 °, only the constricted portion 23 a of the dead bolt 23 is projected and enters the annular distal end 27 of the guard arm 25. If the door 1 is opened in this state,
As described above, the guard arm 25 extends while rotating, and the opening angle of the door 1 is regulated as shown in FIG.
When the door 1 is not opened and the cylinder lock 9 or the thumb turn 21 is further rotated by, for example, an angle of 45 °, the dead bolt 23 further projects and enters the strike on the door frame 31 side, and the locked state by the dead bolt 23 Becomes

At this time, the sliding member 33 is slid simultaneously with the rotation of the cylinder lock 9 or the thumb turn 21, and a plurality of lock pins 71 provided on the sliding member 33 are moved to the position shown in FIG.
As shown in (a), it is moved upward along the end face 11. Each of the moved lock pins 71 enters the fitting groove 73a of the lock pin receiver 73 from below.

Pin 71b inserted into fitting groove 73a
As shown in FIG. 8B, the bulging portion 71c at the tip is engaged with the back surface of the lock pin receiver 73. This allows
The door frame 31 and the door end face 11 are prevented from moving in the opening and closing direction of the door 1 and are prevented from being deformed in the direction in which the gap between the door frame 31 and the door end face 11 is widened.

In this manner, a plurality of lock pins 71 and lock pin receivers 73 provided between the door 1 and the door frame 31 are provided.
Are engaged with each other, and simultaneously with the final tightening by the dead bolt 23, the lock pin 71 and the lock pin receiver 73 are locked at many places.

According to the locking device 81, the lock pin 71 and the lock pin receiver 73 are engaged with each other at the same time as the final tightening by the dead bolt 23, so that locking can be performed at a number of places, thereby improving security. Can be.

By sliding one sliding member 33, a plurality of lock pins 71 and lock pin receivers 7 are provided.
3 can be engaged, so that multipoint fastening can be achieved with a simple structure. Further, since the lock pin 71 and the lock pin receiver 73 can be engaged by rotating the cylinder lock 9 or the thumb turn 21, other locking structures such as an auxiliary lock are not required, and the device can be manufactured at low cost.

It is preferable that a cover member for covering the lock pin 71 is provided on the door frame 31 or the door end surface 11.
The cover member 83 is provided on the door frame 31, for example, as shown in FIG. The cover member 83 has a notch (not shown) through which the lock pin 71 passes only when the door 1 is opened and closed.

By providing such a cover member 83, the lock pin 71 in the locked state cannot be easily viewed from the gap between the door frame 31 and the door end face 11, and the security can be further improved.

The above-described locking device 81 includes a sliding member 33, a lock pin 71, and a lock pin receiver 7 which are main members.
3 can be additionally attached outside the door 1, so that the existing door 1
Can be added relatively easily to the existing locking device, and further security can be added to the existing locking device.

Next, a second embodiment of the locking device according to the present invention will be described. FIG. 9 is a front view of a door provided with a locking device according to a second embodiment of the present invention, and FIG. 10 is a front view in which a part of a sub-locking means used in the locking device of FIG. 9 is partially cut away. The same members as those shown in FIGS. 1 to 8 are denoted by the same reference numerals, and redundant description will be omitted.

The locking device 91 according to the second embodiment
Includes a sliding member 33, a lock pin 71, and a lock pin receiver 73 similar to those of the above-described locking device 81 as main components, and a sub-locking device 93 as sub-locking means.

The secondary locking device 93 of the second embodiment
Has a sub lock box 99 provided on the door 1, and the sub lock box 99 is provided with a sub cylinder lock 95 and a sub thumb turn 97. In this embodiment, the auxiliary lock box 99 is disposed below the door 1, for example, below the handle 3, as shown in FIG.

A lock plate 101 is provided on the auxiliary lock box 99 of the auxiliary lock device 93 so as to be slidable in the left-right direction in FIG. 10, and the lock plate 101 is opened by rotating the auxiliary cylinder lock 95 or the auxiliary thumb turn 97. The engaging rod 102 at the front end can freely protrude and retreat from the end face 11. Secondary cylinder lock 9
The structure for converting the rotation of the fifth or auxiliary thumb turn 97 into the forward / backward movement of the lock plate 101 is, for example, as shown in FIG.
A recess 103 is formed in the lock plate 101 and the sub cylinder lock 9 is formed.
5 or the rotation shaft of the auxiliary thumb turn 97 can be configured by projecting a projection 105 that engages with the concave portion 103.

The sliding member 33 is provided with a locking hole 107 into which the engaging rod 102 of the lock plate 101 is inserted. The locking hole 107 is provided so as to coincide with the tip of the lock plate 101 when the sliding member 33 moves to the lock position.

In the locking device 91 thus configured,
In the state where the cylinder lock 9 or the thumb turn 21 is rotated, the dead bolt 23 enters the strike, and the lock pin 71 is locked on the lock pin receiver 73, either the auxiliary cylinder lock 95 or the auxiliary thumb turn 97 of the auxiliary locking device 93. Rotate one or the other.

As a result, the protruding engaging rod 102 of the lock plate 101 enters the locking hole 107 of the sliding member 33,
The sliding of the sliding member 33 is prevented, and
1 and the lock pin receiver 73 are maintained in the engaged state. That is, the lock pin 71 and the lock pin receiver 73 are
It will be double locked.

According to the locking device 91, the sliding member 33 can be locked independently of the cylinder lock 9 or the thumb turn 21 for fully tightening the dead bolt 23. Accordingly, in order to unlock the door 1, in addition to the operation of the cylinder lock 9 or the thumb turn 21 for the final tightening, the operation of the sub cylinder lock 95 or the sub thumb turn 97 of the sub locking device 93 is required before the operation. Thus, the security can be further improved.

The sub-locking means of the second embodiment includes, for example, a structure in which the sliding member 33 is prevented from sliding by operating the sub-cylinder lock 95 or the sub-thumb turn 97 described above. When the sliding member 33 performs the sliding movement, the lock plate 101 may automatically move and the engaging rod 102 may enter the locking hole 107 of the sliding member. When the operation of the cylinder lock 9 or the thumb turn 21 is performed, the sliding movement of the sliding member 33 is automatically restricted, and the engagement state between the lock pin 71 and the lock pin receiver 73 is maintained to be in the locked state.

The means for sliding the sliding member 33 along the end face 11 by the cylinder lock 9 or the thumb turn 21 described above may have a configuration other than that by the rack 43 and the gear 45 shown in FIG.

For example, as shown in FIG.
A concave portion 55 is formed in the base material 37 of the third member, and a projection 57 projecting radially outward from the rotation center of the cylinder lock 9 or the thumb turn 21 is provided. The base member 37 is slid by engaging with the base member 37, as shown in FIG.
And an engagement hole 59 is formed in the cylinder lock 9 or the thumb-turn 2.
Cam-like projections 6 projecting radially outward from the center of rotation
1 is projected, and the cam-shaped projection 61 is engaged with the engagement hole 59 by the rotation of the cylinder lock 9 or the thumb turn 21, and the base material 37 is formed.
13, and further, as shown in FIG. 13, the base material 37 and the cylinder lock 9 or the thumb turn 21 are linked to each other via an extendable connecting rod 65 urged in a direction of extension by a spring member 63. One that is connected and slides the base material 37 via the connecting rod 65 by the rotation of the thumb turn 21 is exemplified.

[0052]

As described in detail above, the locking device according to the present invention has a sliding member which slides in conjunction with the rotation operation of the cylinder lock or the thumb turn on the end face of the door, and the sliding member slides. A plurality of engagement projections and engagement receiving portions that engage with each other are provided over the sliding member and the door frame. As a result, there is an effect that locking can be performed at a number of places and security can be improved.

Further, by sliding one sliding member, the plurality of engaging projections and the engaging receiving portions can be engaged with each other, so that multipoint tightening can be achieved with a simple structure. effective.

Further, since the engagement protrusion and the engagement receiving portion can be engaged by rotating the cylinder lock or the thumb turn for final tightening by the dead bolt,
Locking with a dead bolt and locking with an engagement protrusion and an engagement receiving portion can be performed simultaneously with a single cylinder lock or thumb turn, eliminating the need for auxiliary locks of other configurations, thereby making it possible to construct an inexpensive locking device. There is an effect that can be.

Further, by providing a sub-locking means to maintain a state in which the sliding member slides and the engagement protrusion and the engagement receiving portion are in the engaged state, thereby restricting the sliding movement of the sliding member. In addition, the sliding member can be locked, that is, locked, independently of the cylinder lock or the thumb turn for fully tightening the dead bolt, and the security can be further improved.

[Brief description of the drawings]

FIG. 1 is a front view of a door including a locking device according to a first embodiment of the present invention.

FIG. 2 is a perspective view of a guard arm lock provided in the locking device.

FIG. 3 is an explanatory diagram of an operation of the guard arm lock.

FIG. 4 is an exploded perspective view of a main part of the locking device of the embodiment.

FIG. 5 is a view taken along line AA in FIG. 1;

FIG. 6 is a partially cut side view of the locking device of the embodiment.

FIG. 7 is a perspective view of an engagement protrusion and an engagement receiving portion used in the locking device.

FIG. 8 is an explanatory view showing a locked state when the engagement projection and the engagement receiving portion are unlocked and locked.

FIG. 9 is a front view of a door including a locking device according to a second embodiment of the present invention.

FIG. 10 is a partially cut front view of a sub-locking means used in the locking device.

FIG. 11 is a partially enlarged front view of a locking device according to another embodiment.

FIG. 12 is a partially enlarged front view of a locking device according to another embodiment.

FIG. 13 is a partially enlarged front view of a locking device according to another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Door 7 ... Lock box 9 ... Cylinder lock 11 ... Door end surface 21 ... Thumb turn 23 ... Dead bolt 31 ... Door frame 33 ... Sliding member 71 ... Engagement protrusion (lock pin) 73 ... Engagement receiving part (lock pin receiver) 81, 91: locking device 93: sub-locking means (sub-locking device) 99: sub-lock box

Claims (2)

[Claims] 1. A dead bolt which is provided slidably with respect to a lock box provided on a door, and which advances and retreats from a front plate of the lock box and reciprocates from an end face of the door by a cylinder lock or a thumb turn which is operated to rotate. A sliding member that slides along the longitudinal direction of the end surface of the door in conjunction with the rotation operation of the cylinder lock or the thumb turn; and either the sliding member or the door frame facing the sliding member. A plurality of engagement protrusions provided on one side and protruding toward the other of the sliding member or the door frame; and the sliding member provided on the other of the sliding member or the door frame. A plurality of engagement receiving portions that are slid to engage with the respective engagement protrusions. 2. A deadbolt which is provided slidably with respect to a lock box provided on a door and which advances and retreats from a front plate of the lock box and reciprocates from an end face of the door by a cylinder lock or a thumb turn which is operated to rotate. A sliding member that slides along the longitudinal direction of the end surface of the door in conjunction with the rotation operation of the cylinder lock or the thumb turn; and either the sliding member or the door frame facing the sliding member. A plurality of engagement protrusions provided on one side and protruding toward the other of the sliding member or the door frame; and the sliding member provided on the other of the sliding member or the door frame. A plurality of engagement receiving portions that are engaged with the respective engagement protrusions by being slid; provided on a sub-lock box disposed on the door, wherein the sliding member slides and engages with the engagement protrusions; The engagement receiving portion is engaged. Maintaining the state, locking device being characterized in that anda secondary locking means for restricting the sliding of the sliding member.