JPH04319190A - Door lock - Google Patents

Abstract

PURPOSE:To prevent projections of a latch bolt and dead bolt to the end of a door in the case of opening of the door by providing a dead bolt driving mechanism driving the dead bolt of the door to projecting and shunting positions and a cam member. CONSTITUTION:The second locking stopper 16 is released from a dead bolt 13, and when a lever of a door is turned, a cam member 12 is turned, a moving plate 24 is retreated along a guide rail 25 against a spring 23, and the dead bolt 13 is retreated through a lever 29 to open the door. After that, the entirety of the dead bolt 13 retreated from the end of the door once is slightly advanced with energizing force of the spring 23, and a projection 24a of the moving plate 24 is locked to the first locking stopper 15. Then, when taking hands off from the lever, it is returned to a horizontal position with energizing force of a spring 19. While, a projection 12c of the cam member 12 pushes the lever 29 in the A direction with energizing force of the spring 19 to turn the lever 29, and a retractible bolt 30 draws the dead bolt 13 completely into a body casing 27.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door lock used for doors of various facilities such as companies and residences.

0002

2. Description of the Related Art Conventional door locks generally consist of a latch bolt that moves forward and backward by operating the door handle, and a dead bolt that locks and unlocks the door.

0003

By the way, in the above-mentioned conventional door lock, the latch bolt protrudes from the end face of the door when the door is open. This has caused an accident in which the latch bolt guide portion of the strike that protrudes from the door frame surface or the tip of the latch bolt gets caught on clothing or the like. It was also dangerous for children and others. Furthermore, the deadbolt can be protruded even when the door is open. For this reason, if the door is closed with the deadbolt protruding, there is a drawback that the door frame may be damaged.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a door lock in which a latch bolt or dead bolt does not protrude from the end face of the door when the door is opened, and which does not require a latch bolt guide portion of the strike. There is a particular thing.

[0005]

[Means for Solving the Problems] The door lock according to the present invention includes:
A lever member for opening and closing the door, a cam member rotatably driven by the lever member, a deadbolt that advances and retreats from the opening/closing end surface of the door, and a cam that drives the deadbolt to two positions, an extended position and a retracted position. A deadbolt drive mechanism that retracts the deadbolt when the door is opened by the member, a first locking stopper that locks the deadbolt at a first position intermediate between a protruding position and a retracted position, and a first locking stopper that protrudes the deadbolt. The door lock is characterized in that it includes a second locking stopper that locks at a second position, and a magnet that releases the first locking stopper. Also, a lever member for opening and closing the door, a cam member rotationally driven by the lever member, a deadbolt that advances and retreats from the opening and closing end surface of the door, and a deadbolt that moves the deadbolt to two positions, an extended position and a retracted position. a bolt drive mechanism, a first locking stopper that locks the deadbolt in a first position, a second locking stopper that locks the deadbolt in a second position, and the first locking mechanism. a magnet for releasing the stopper, and the cam member is composed of a first cam that is directly driven by a lever member and a second cam that is driven via a torque limiter. be.

[0006]

[Function] As described above, according to the door lock of the present invention, the latch bolt and dead bolt do not protrude from the end face of the door, and the latch bolt guide part is not exposed from the door frame, so that hands and clothes are not exposed when the door is opened. It won't hurt you.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. A lever member 11 for opening and closing the door 10, and a cam member 12 rotationally driven by the lever member 11.
a deadbolt 13 that advances and retreats from the opening/closing end surface of the door 10; and a deadbolt drive mechanism that drives the deadbolt 13 to two positions, a protruding position and a retracted position, and retracts the deadbolt 13 when the door is opened by the cam member 12. 14, a first locking stopper 15 that locks the deadbolt 13 in a first position between the protruding position and the retracted position, and a second locking stopper 15 that locks the deadbolt 13 in the second protruding position. A locking stopper 16 and a magnet 17 for releasing the first locking stopper 15 are provided. Here, the cam member 12 is composed of a first cam 12a that is directly driven by the lever member 11, a second cam 12b that is driven via the torque limiter 18, and a spring 19 that biases in the direction of arrow A. has been done. first cam 12
A is provided with a hole 20 into which the lever member 11 is inserted, and protrusions 12e and 12f are provided upright therein. Here, the protrusion 12e is for operating the first cam 12a when a push-pull is used instead of the lever member 11. The protrusion 12f is a protrusion when a thumb latch is used instead of the lever member 11. Further, as shown in FIG. 16, a hole 21a is bored in the stepped portion 21 of the first cam 12a. The second cam 12b is inserted into the stepped portion 21 of the first cam 12a through a round hole 22. Further, the second cam 12b has a hole 22c facing the round hole 22.
A spring 18a and a ball 18b are inserted to form a torque limiter. Therefore, when the first cam 12a is turned with a strong force, the ball 18b retreats and no force is transmitted to the second cam 12b.

The deadbolt drive mechanism 14 includes a moving plate 24 biased by a spring 23 in the deadbolt projecting direction;
A guide rail 25 that guides the sliding movement of the movable plate 24, a guide rod 26 that guides the spring 23, a fixed piece 28 that holds and fixes the guide rod 26 to the main body casing 27, and a semi-rotatable structure that is attached to the movable plate 24. Lever rod 29 pivoted in the center
The lower end of the movable plate 24 includes a draw bolt 30 pin-coupled to the tip of the lever rod 11 and a spring 31 that urges the dead bolt 13 inserted through the draw bolt 30 in the projecting direction. is provided with a protrusion 24a for engaging with the first locking stopper 15. Flanges 24b and 24c are provided at the front and rear of the movable plate 24, and the protrusion 12c of the cam member 12 can come into contact with the rear end flange 24b, and a guide rod 26 is inserted therein. Therefore, the movable plate 24 moves along the guide rail 25 fixed to the main casing 27 with the spring 23
It slides against the urging force of.

The first locking stopper 15 is semi-rotatably supported by a pin 32 on the main body casing 27 and biased toward the movable plate 24 by a spring 33. A pin 34 is provided upright below the first locking stopper 15 . A magnet 17 is loosely fitted into this pin 34. The magnet surface of the magnet 17 is exposed below the deadbolt 13 of the main body casing 27. Therefore, when the door 10 is closed, the magnet 17 moves by being attracted to a piece of iron or a magnet that is part of a strike installed in the door frame, thereby driving the pin 34. When the pin 34 is driven, the first locking stopper 15 rotates and disengages from the movable plate 24.

The second locking stopper 16 is semi-rotatably supported on the main body casing 27 by a pin 34, and its tip can engage with the flange 13a of the deadbolt 13. Further, the second locking stopper 16 is connected to the solenoid 3.
5 to lock and unlock. In addition, a thumb turn is provided for operation from indoors, and a second locking stopper 16 is provided.
may be operated. In addition, if a cylinder lock is installed on the outside of the room to operate the second locking stopper 16, it can be used as an emergency lock in case the electrical system breaks down. Can be used as a door lock. Furthermore, if the second locking stopper 16 is biased by a spring in the direction of engagement with the flange 13a of the deadbolt, an auto-locking mechanism that automatically locks when the deadbolt 13 protrudes can be provided. can. Incidentally, by remotely controlling the second locking stopper 16, it can also be used as a remote control lock.

Next, a method of using the door lock constructed as described above will be explained. First, when opening the closed and locked door 10, if the door is indoors, a thumb turn (not shown) is operated to release the second locking stopper 16 from the deadbolt 13. Next, turn the lever member 11. When the lever member 11 is turned, the cam member 12 rotates and the moving plate 24 moves backward along the guide rail 25 against the spring 23. The moving plate 24 retracts the deadbolt 13 via the lever rod 29. When the deadbolt 13 is retracted from the strike of the door frame (not shown), the door 10 can be opened. By operating the lever member 11, the deadbolt 13, which has completely retreated from the door end, is moved forward a little by the biasing force of the spring 23, and the moving plate 2 is moved to the first locking stopper 15.
The projections 24a of No. 4 are locked (see FIGS. 2 and 5). When the lever member 11 is released, the lever member 11 returns to the horizontal position due to the biasing force of the spring 19. On the other hand, the protrusion 12c of the cam member 12 presses the lever rod 29 in the direction of arrow A due to the urging force of the spring 19 (see FIG. 3). When the lever rod 29 is rotated, the retraction bolt 30 pulls the deadbolt 13 into the main body casing 2.
Completely pull it into 7. Therefore, when the door is opened, the deadbolt 13 is completely recessed into the main body casing 27.

Next, when the door 10 is closed, the magnet 17 is attracted to the iron piece of the strike portion of the door frame when the door 10 is housed within a door frame (not shown). When the magnet 17 is attracted, the first locking stopper 1 is attached via the pin 34.
5 is released from the projection 24a of the moving plate 24. Protrusion 24
When a is released, the movable plate 24 is moved in the direction of arrow B by the biasing force of the spring 23. When the moving plate 24 moves in the direction of arrow B, the deadbolt 13 completely protrudes from the door 10 (see FIG. 1). That is, the deadbolt 13 protrudes only when the door 10 is completely closed, and the door 10 is locked to the door frame. To lock the door, operate the second locking stopper 16 in this state to lock the door. The second locking stopper 16 can be locked indoors using a thumb turn, a remote control switch, or the like. If it's outdoors,
This can be done using a remote control switch, key, etc.

The deadbolt drive mechanism 14 and cam member 12 used in the present invention allow the door 10 to open when the deadbolt 13 is not fully retracted by the lever handle (for example, when it protrudes several mm from the door end surface). Even if the deadbolt 1 is removed by releasing the lever handle,
3 is completely drawn into the door, so it is safe.

[0014] Since the door lever and the deadbolt 13 are interlocked, there is a risk that the lock may be broken if a strong external force is applied to the door lever. Therefore, in the present invention, the cam member 12
is divided into a first cam 12a and a second cam 12b, and both are combined via a torque limiter 18. Therefore, even if a large force is applied to the lever member 11, only the first cam 12a rotates idly due to the action of the torque limiter 18, and the force is transmitted to members such as the second cam 12b, moving plate 24, and dead bolt 13. Not done. This prevents the lock from being destroyed. The torque limiter 18 can be used again by returning it to its original position.

[0015] In the above embodiments, an example using a lever handle has been described, but the present invention is not limited to this, and can also be applied to push-pull, thumb latch, etc. Furthermore, if a character combination lock or a dial code lock for operating the second locking stopper 16 is provided on the outside of the room, it can be used as a keyless emergency lock in case of an electrical system failure. Note that the present invention is not limited to the above embodiments, and various design changes can be made based on the technical idea of the present invention.

[0016]

[Effects of the Invention] As explained in detail above, according to the door lock of the present invention, the deadbolt is completely recessed when the door is opened, and the latch bolt guide of the strike is exposed outside the door frame. There is no chance of it getting caught on the operator's jacket or pants. In particular, children and the like can be prevented from being injured. Additionally, the door end face has no protrusions and is smooth in appearance. Furthermore, the deadbolt will not protrude unless the door is completely closed and there is something for the magnet to attract, so it will not fly out when the door is open. In addition, if the first cam and the second cam are configured to be driven via a torque limiter, even if the lever member is hit with a strong force from the outside, the deadbolt will be blocked by the torque limiter and will be released. Never lock it. Note that a guide part for receiving the latch bolt on the strike of the door frame is not required.

[Brief explanation of drawings]

FIG. 1 is a plan view showing a state in which a deadbolt of a door lock according to an embodiment of the present invention is protruded.

FIG. 2 is a plan view showing a dead bolt of a door lock according to an embodiment of the present invention in a partially retracted state.

FIG. 3 is a plan view showing a completely retracted deadbolt of a door lock according to an embodiment of the present invention.

FIG. 4 is a perspective view showing an open state of a door using the door lock of the present invention.

FIG. 5 is a perspective view showing a state in which the deadbolt is retracted immediately after opening a door using the door lock of the present invention.

FIG. 6 is a plan view showing a part of the deadbolt drive mechanism used in the door lock of the present invention.

FIG. 7 is a side view showing a part of the deadbolt drive mechanism used in the door lock of the present invention.

FIG. 8 is a sectional view showing a part of the deadbolt drive mechanism used in the door lock of the present invention.

FIG. 9 is a plan view showing a part of the deadbolt drive mechanism used in the door lock of the present invention.

FIG. 10 is a plan view showing a first locking stopper used in the door lock of the present invention.

FIG. 11 is a front view showing a first locking stopper used in the door lock of the present invention.

FIG. 12 is a sectional view showing a deadbolt used in the door lock of the present invention.

FIG. 13 is a side view showing a second locking stopper used in the door lock of the present invention.

FIG. 14 is a plan view showing a lever rod used in the door lock of the present invention.

FIG. 15 is a plan view showing a first cam used in the door lock of the present invention.

FIG. 16 is a side view showing a first cam used in the door lock of the present invention.

FIG. 17 is a sectional view showing a second cam used in the door lock of the present invention.

FIG. 18 is a sectional view showing a second cam used in the door lock of the present invention.

[Explanation of symbols]

10 Door 11 Lever member 12 Cam member 12a First cam 12b Second cam 12c Projection 13 Deadbolt 13a Flange 14 Deadbolt drive mechanism 15
First locking stopper 16
Second locking stopper 17 Magnet 18 Torque limiter 19
Spring 20 Hole 21 Step portion 22 Round hole 23 Spring 24 Moving plate 24a Protrusion 25 Guide rail 26 Guide rod 27 Main body casing 28
Fixed piece 29 Lever rod 30 Retraction bolt 31 Spring 32 Pin 33 Spring 34 Pin 35 Solenoid

Claims (2)

[Claims] Claims: 1. A lever member for opening and closing a door; a cam member rotatably driven by the lever member; a deadbolt that advances and retreats from the opening/closing end surface of the door; a deadbolt drive mechanism that drives the deadbolt and retracts the deadbolt when the cam member opens the door; and a first locking stopper that locks the deadbolt at a first position between a protruding position and a retracted position. A door lock comprising: a second locking stopper that locks the deadbolt in a protruding second position; and a magnet that releases the first locking stopper. 2. A lever member for opening and closing the door, a cam member rotationally driven by the lever member, a deadbolt that advances and retreats from the opening/closing end surface of the door, and the deadbolt is placed in two positions, an extended position and a retracted position. a deadbolt drive mechanism for driving the deadbolt; a first locking stopper for locking the deadbolt in a first position; a second locking stopper for locking the deadbolt in a second position; and a magnet for releasing the first locking stopper, and the cam member is comprised of a first cam that is directly driven by a lever member and a second cam that is driven via a torque limiter. door lock.