JP4200240B2 - Cylinder lock with indicator - Google Patents

Description

    The present invention relates to the structure of a cylinder lock provided with an indicator.

Conventionally, there are many types of cylinder locks.
There are many types of display locks and display metal fittings.
However, there is no display lock that can be locked and unlocked by operating with a key from the door display side.
Japanese Utility Model Sho 63-184963

There are two things that cannot be solved with the display locks and metal fittings that have been generally used for toilets.
One is that the door cannot be locked from the outside even when it is desired to prohibit the use for work or the like.
One is to unlock the display unit by sliding or rotating the display part from the outside even if it is operated and locked from the inside. Those who know it cannot use it with peace of mind.

There are many display locks with an emergency unlocking device on the display.
These can be unlocked from the outside by turning or sliding the indicator using coins and pins from the outside.
It is not for locking from the outside, it can be opened easily from the outside even if locked, so you can not use it with confidence.

There is no effective lock to use at the entrance of the darkroom.
With the display lock, the door cannot be locked by locking from the outside, and with the cylinder lock, there is a concern that even if the lock is locked and the work is performed in the darkroom, the lock can be opened.

  The lock is a combination of a display lock and a cylinder lock, and can be locked and unlocked by operating the combined key from the display side, and it is a problem to make a lock that does not unlock even if the indicator is operated during locking.

In the conventional display lock, it is common to assemble the indicator to the dharma.
It is also to enable emergency unlocking by operating the display unit.
However, when assembled in a dharma, if the unlocking operation is performed with mischief, it is easily unlocked, and it is difficult to prevent unauthorized unlocking.
It is possible to solve the problem by combining the shape of the dharma and the combination of the dharma and the metal fittings, but the structure becomes complicated and it is difficult to ensure the strength of the parts and the reliability of the operation.

In the present invention, the display device is assembled to the dead bolt to prevent unauthorized unlocking by operating the display device.
The dead bolt of the lock is provided with a dead bolt fixing mechanism to withstand the pushing of the dead bolt during locking, and the dead bolt cannot be retracted.

The mechanism of the lock of the invention will be described with reference to FIGS.
An indicator base (4) for assembling the indicator (8) is provided on the side of the dead bolt (1). The assembled display is sandwiched between the inside and outside of the door so that the dressing seat with display window (12) can be covered from above. The indicator slides in the slide groove (13) of the decorative seat with the display window according to the locking and unlocking, and the indicator is displayed on the display window (14). The cylinder (16) is connected and assembled to the dharma (11) in the same manner as a conventional cylinder lock.

It will be described with reference to FIG. 2B that the display device does not unlock even when the display is operated.
The indicator is assembled to the indicator base (4) of the dead bolt (1).
The protruding dead bolt is fixed so as not to be pulled in by a locking bar (23) which is a dead bolt fixing mechanism.
Therefore, the dead bolt cannot be retracted by operating the display.

When the unlocking operation is performed with the key, the cylinder shaft assembled in the bearing hole (10) of the dharma (11) rotates, the dharma rotates, the dharma dead cam (25) pushes the locking pin (24), and the locking pin moves to the locking bar ( 23) is pushed up, and the dead cam retracts the dead bolt (1) at the same time.

In the conventional display lock, the indicator is assembled to the dharma. For this reason, when the indicator is assembled, the cylinder cannot be assembled, and it is necessary to choose whether to install the indicator or cylinder in the dharma.

  In the cylinder lock with an indicator of the invention, the indicator is assembled to the dead bolt and the cylinder is assembled to the dharma, so that both the indicator and the cylinder can be mounted.

  A lock that can be locked and unlocked by operating the key from the display side, and that can be solved even if the display is operated, is realized.

FIG. 5 shows a combination of a cylinder, a display, and a thumb turn, which is a usage that cannot be realized with a conventional display lock.
When an indicator and a cylinder are assembled on the outside and a thumb turn is assembled on the inside as an indicator lock for the toilet, an emergency unlock in the event of an accident in the toilet can be unlocked with a key. A person using the toilet is more secure than unlocking with a conventional emergency unlocking device.

It is a perspective view which shows the components structure of the cylinder lock with a display. A. The inside of the unlocked lock case is shown. B. The inside of the lock case in the locked state is shown. It is a perspective view of a dead bolt. The inside of the lock case of the cylinder lock with indicator with latch bolt is shown. Examples of combinations of indicator, cylinder and thumb turn are shown.

Explanation of symbols

1 Det bolt 2 Positioning groove 3 Display base guide groove 4 Display base 5 Lock case 6 Screw hole 7 Mounting bar 8 Display 9 Cylinder assembly hole 10 Bearing hole 11 Dharma 12 Dressing seat with display window 13 Slide groove 14 Display window 15 Cylinder guide hole 16 Cylinder 17 Key hole 18 Mounting bar 19 Dressing seat 20 Mounting screw 21 Thumb turn cylinder 22 Thumb turn 23 Locking bar 24 Locking pin 25 Dead cam 31 Dead bolt 32 Latch bolt 33 Lock case 34 Dalma 35 Display base 36 Latch cam 37 Handle bearing hole

Claims (1)

  The lock case (5) has a dead bolt (1), a locking bar (23) for fixing the protruding dead bolt, and a cylinder (16) and a thumb turn (22) in a dharma (11) for inserting and removing the dead bolt. , Turn the joint key or thumb turn attached to the cylinder, push out the dead bolt, lock it, or retract it to unlock the general cylinder lock (1) with the indicator (8) In addition to being able to lock and unlock with the key from the outside by assembling the indicator (8) to the dead bolt (1) with a lock structure that allows the indicator to be seen from the cylinder side, It is possible to display the locked and unlocked state of the lock on the outdoor side, and it is a cylinder lock with an indicator that is not unlocked illegally even if the locked indicator (8) is operated. toilet When it is used for a door in a dark room, etc., when locked from the inside, the display (8) cannot be tampered with and unlocked from the outside. With a joint key, it can be unlocked from the outside and you do not want to use the room. Cylinder lock with indicator that enables locking from outside with a key.