JPH0575367U - Locking device - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention relates to a locking device for doors in safes, fireproof warehouses, and the like, and in particular, it can firmly maintain the locked state even when an impact force is applied from the outside, and can lock the cylinder lock during an emergency unlocking. An object of the present invention is to provide a locking device that enables easy key operation. [Structure] A bar body 1, a cylinder lock 4 for emergency unlocking, and a plurality of members mounted between the cylinder lock 4 and the bar body 1 and having their ends connected to each other in a direction intersecting each other at substantially right angles. The unlocking metal fitting 6 configured to retreat the bar lock 1 in the direction in which it is retracted from the locking part 3 by the rotation of the cylinder lock 4 in the unlocking direction, and the cutout part 1d at the lower end of the bar lock 1,
Locking / unlocking motor 7 and rotating shaft 7 of the locking / unlocking motor 7
a motor latch 8 fixed to a, and a pin 8 protruding from the upper end of the motor latch 8 and facing the notch 1d of the bar 1.
A locking device comprising: a.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a door locking device in, for example, a safe or a fireproof cabinet, and in particular, it can firmly maintain a locked state even when an impact force is applied from the outside and can operate a cylinder lock key during an emergency unlocking. The present invention relates to a locking device that can be easily operated.

[0002]

[Prior Art]

 Conventionally, a door locking device, as shown in FIG. 6, operates an electronic lock / unlock key provided on the front surface of the door A and operates a motor to laterally move the slider 20, The bar body 1 provided on the door body A is engaged with and disengaged from the locking portion 3 formed at the opening edge of the case body B. The bar 1 is supported by loosely fitting the elongated hole 1a of the bar 1 to the mounting shaft 2 fixed at a predetermined position of the door A, and the bar 1 has a range of the elongated hole 1a. It can be moved laterally with. A spring 21 is stretched between the bar body 1 and the door body A, and urges the bar body 1 toward the locking portion 3 in a direction to always project. A bracket 1c is erected near the center of the bar 1 so that the key can be inserted into the key hole 4a of the cylinder lock 4 at the time of emergency unlocking, that is, when the unlocking number of the electronic lock is forgotten or the locking device fails. By rotating in the unlocking direction, the bracket 1c is moved from the position indicated by the solid line in the figure to the position indicated by the chain line, and the engagement between the bar 1 and the locking portion 3 is released. A contactor 1f is fixed to an upper part of the bar member 1 on one side and abuts on one of the left and right microswitches 5a and 5b arranged above the contact member 1f to connect the bar member 1 and the locking portion 3 to each other. The engagement / disengagement state of is detected.

[0003]

[Problems to be solved by the device]

 In the conventional locking device described above, the barb 1 is engaged with the locking portion 3 by utilizing the pulling force of the spring 21, and the locked state is maintained. If given, the bar body 1 and the locking portion 3 may be disengaged, and the door body A may be opened. Further, when the key is inserted into the key hole 4a of the cylinder lock 4 and rotated in the unlocking direction at the time of emergency unlocking, the key is rotated against the tensile force of the spring 21, so the key operation is heavy and the workability is low. It was bad. Further, since the slider 10 operated by the motor is directly connected to the bar body 1, the engagement / disengagement state of the bar body 1 and the locking portion 3 is detected. The positions of the left and right micro switches 5a and 5b are finely adjusted. It was necessary, and there was a problem that it took time to install the micro switch. The present invention solves the above-mentioned problems of the prior art, maintains the locked state firmly even when an external impact force is applied, and facilitates the key operation of the cylinder lock at the time of emergency unlocking. It is an object of the present invention to provide a locking device that can be mounted and can be attached with a micro switch in a short time.

[0004]

[Means for Solving the Problems]

 As a concrete means for solving the above-mentioned problems, the present invention includes (1) a barb which is installed laterally on a door body and is capable of retracting into and from a locking part formed at an opening edge of a cabinet. A notch formed on the lower end of the bar, a locking / unlocking motor disposed below the notch, a motor latch fixed to the rotary shaft of the locking / unlocking motor, and an upper end of the motor latch. And a pin facing the notch of the bar so that the bar can be projected and retracted with respect to the locking part by the rotation operation of the locking and unlocking motor. Set. (2) A bar bar that is installed laterally on the door and that can be retracted to and from a locking part formed on the opening edge of the case, and is provided near this bar and has a keyhole on the front surface of the door. It consists of a cylinder lock for emergency unlocking and a plurality of members that are attached between the cylinder lock and the barb and have their ends connected in a direction intersecting each other at a substantially right angle. It is formed between the unlocking metal fitting that retracts the lock bar in the direction in which it is retracted from the locking part by rotation in the direction and the end of the component member of the unlocking metal metal by notching the lower end of the lock metal fitting. The cutout portion, the locking / unlocking motor arranged below the cutout portion, the motor latch fixed to the rotary shaft of the locking / unlocking motor, and the locking / unlocking portion protruding from the upper end of the motor latch. The lock bar is cut so that the lock bar can be retracted from the locking part by rotating the motor. Locking device characterized in that it comprises a pin to face the section. Is proposed.

[0005]

In a normal locking / unlocking mechanism, when a predetermined unlocking (or locking) instruction is given and the locking / unlocking motor is driven, the motor latch rotates 180 ° about the rotation axis, and the motor is locked. The latch pin laterally moves the bar body with respect to the locking portion. In the unlocking mechanism using the emergency unlocking key, the rotational force of the cylinder lock deforms the unlocking metal fitting and releases the engagement between the bar and the locking part.

[0006]

【Example】

 Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is an inside view of a fireproof box for explaining a locking device incorporated inside a door, FIG. 2 is a plan view of FIG. 1, and FIG. It is the front view which lacked. In FIG. 1 and FIG. 2, a horizontally long bar 1 is provided at a substantially central portion of the door body A. The bar 1 is supported by loosely fitting the elongated hole 1a of the bar 1 to the mounting shaft 2 fixed at a predetermined position of the door A, and the bar 1 has a range of the elongated hole 1a. It can be moved laterally with. By this lateral movement, the tip portion 1b of the bar body 1 is projected and retracted with respect to the locking portion 3 formed at the opening edge of the case body B, and is engaged and disengaged.

A bracket 1 c is erected near the center of the barb 1. Adjacent to this bracket 1c, a cylinder lock 4 for emergency unlocking, which will be described later, is attached, and its keyhole 4a (FIG. 3) appears on the front surface. The lower end of the bar body 1 is cut out near the center to form a cutout portion 1d. The lower end portion of the bar body 1 excluding the cutout portion 1d is horizontally bent in an L-shaped cross section to form a flat surface portion 1e. A contactor 1f is fixed to the upper part of the bar 1 on one side, and when the bar 1 is moved laterally, it comes into contact with either of the left and right microswitches 5a, 5b. I am

An unlocking fitting 6 is attached between the cylinder lock 4 and the bar body 1. The unlocking metal member 6 is composed of three members, that is, a cylinder lock-side unlocking member 6a whose end portions are connected in a direction intersecting each other at a substantially right angle, a bar-side unlocking member 6b, and a connecting member 6c. .. The cylinder lock side unlocking member 6a has one side fixed to the cylinder lock 4 and the other side connected to one side of a connecting member 6c arranged in a direction intersecting at a substantially right angle with a pin and a stop ring. The other side of the connecting member 6c intersects the connecting member 6c at a substantially right angle, and is connected to one side of the bar-side unlocking member 6b arranged in a direction parallel to the cylinder lock-side unlocking member 6a. The central portion of 6b is connected to the bar 1. The other side of the lock bar side unlocking member 6b is bent downward to form a cutout portion 1d between the barbed body side unlocking member 6b and the lower end of the cutout bar body 1, and the lower end thereof is bent horizontally in an L-shaped cross section to form a flat surface. The portion 6d is formed.

A locking / unlocking motor 7 is disposed below the notch 1d of the bar body 1. A motor latch 8 is fixed to the rotary shaft 7a of the locking / unlocking motor 7, and a pin 8a is provided on the upper end of the motor latch 8 so as to project. The pin 8a of the motor latch 8 has a cutout portion 1d of the bar body 1, that is, a cutout end surface 1g of a lower end flat surface portion 1e of the lock bar body 1, and a cutout end surface 6e of a lower end flat surface portion 6d of the lock bar side unlocking member 6b. Between the two. When the locking / unlocking motor 7 is driven, the motor latch 8 rotates 180 ° around the rotary shaft 7a and takes a position either in the front end direction or the rear end direction of the bar body 1.

Here, the operation of the locking device of this embodiment will be described. First, in the locked state, in the locked state, the pin 8a of the motor latch 8 in FIGS. 1 and 2 comes into contact with the notched end surface 6e of the lower end flat surface portion 6d of the bar-side unlocking member 6b. The tip portion 1b of the bar body 1 is projected to the locking portion 3 of the case body B to maintain the engaged state. Now, when the setting password for the electronic lock is input by the ten-key pad 11 in the operation panel 10 in FIG. 3 and the unlock button is pressed to give an unlocking instruction, the locking / unlocking motor 7 is driven and the unlocking position is reached. The motor latch 8 rotates 180 ° about the rotary shaft 7a. In this process, as shown in FIG. 4, the pin 8a of the motor latch 8 contacts the cutout end face 1g of the lower end flat portion 1e of the bar 1, and retracts the bar 1 from the solid line position to the chain line position. As a result, the tip portion 1b of the bar body 1 sinks and disengages from the engagement portion 3 of the storage case B. In the locking operation, the setting password of the electronic lock is input by the ten-key pad 11 of FIG. 3 and the closing button 13 is pressed.

Next, an unlocking operation in an emergency such as forgetting the unlocking number of the electronic lock or a failure of the locking device will be described. In the locked state shown in Fig. 1, slide the battery cover in Fig. 3 laterally to remove it, insert the emergency unlock key into the key hole 4a of the cylinder lock 4, and turn it in the unlock direction (right) to rotate it. The force is transmitted to the unlocking metal fitting 6 as shown in FIG. That is, since the cylinder lock-side unlocking member 6a, the lock-bar-side unlocking member 6b, and the connecting member 6c, which form the unlocking metal fitting 6, are connected to each other at their ends intersecting at substantially right angles. By the above rotational force, the connecting angle between the cylinder lock side unlocking member 6a and the connecting member 6c widens, and the connecting angle between the connecting member 6c and the barbed side unlocking member 6b tends to slightly shrink. The bar-side unlocking member 6b is released from the contact state with the pin 8a of the motor latch 8 in such a manner that the other end is flipped up. As a result, the entire unlocking metal fitting 6 that has been deformed by extending from the positional relationship shown by the chain line in FIG. 5 to the state shown by the solid line moves the connecting portion between the bar 1 and the bar side unlocking member 6b to move the bar. It will push body 1 backwards. Therefore, the tip portion 1b of the bar body 1 sinks and disengages from the engagement portion 3 of the storage case B. A spring 9 is stretched between the bracket 1c of the lock bar 1 and one side of the lock bar side unlocking member 6b to facilitate the pivotal operation of the emergency unlock key inserted into the cylinder lock 4. There is.

When the unlocking mechanism using the emergency unlocking key is not required, the lower end of the bar tacker 1 located on the lower end flat surface portion 6d of the bar tacker side unlocking member 6b is bent to have an L-shaped cross section. By forming the portion and forming the cutout portion 1d, the present device can be applied only to a normal locking / unlocking mechanism.

[0013]

[Effect of the device]

 According to the present invention having the above-described structure, engagement and disengagement between the bar and the locking portion are different by 180 ° depending on the notch formed on the bar and the rotation of the locking and unlocking motor facing the notch. This is not done by using the pulling force of the motor that gives the orientation and using the pulling force of the spring to maintain the locked state, so even if the fireproof cabinet is laid down in the locked state and an impact force is applied, the bar The locked state can be firmly maintained without the engagement between the body 1 and the locking portion 3 being disengaged. In addition, the emergency unlocking mechanism is installed between the cylinder lock and the bar and transforms the unlocking metal fitting that consists of multiple unlocking members with their ends connected in a direction intersecting each other at approximately right angles. Since it is not done by inserting the key into the key hole of the cylinder lock and rotating it against the tensile force of the spring as in the past, the key operation of the cylinder lock can be performed easily. Furthermore, since play can be provided in the notch of the bartack that contacts the pin of the motor latch, it is not necessary to finely adjust the positions of the left and right microswitches that detect the engagement / disengagement state of the bartack and the locking part. In addition, the micro switch can be attached in a short time.

[Brief description of drawings]

FIG. 1 is an internal view of a fireproof box for explaining a locking device incorporated in a door body according to an embodiment of the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a front view in which a part of a refractory box in which a locking device according to an embodiment of the present invention is installed is cut away.

FIG. 4 is a partially enlarged view of FIG.

FIG. 5 is an inner view of the fireproof box for explaining the unlocking mechanism in an emergency showing the embodiment of the present invention.

FIG. 6 is an inner view of a fireproof cabinet for explaining a conventional locking device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Barrel 1b ... Tip 1d ... Notch 1f ... Contact 3 ... Locking part 4 ... Cylinder lock 6 ... Unlocking metal 7 ... Locking / unlocking motor 8 ... Motor latch 8a ... Pin A ... Door B ... Box

Claims (2)

[Scope of utility model registration request] 1. A bar member 1 provided laterally on a door A and capable of projecting and retracting with respect to a locking part 3 formed at an opening edge of a case B, and a cutout part 1d formed at a lower end of the bar body 1. A locking / unlocking motor 7 disposed below the notch 1d, a motor latch 8 fixed to a rotating shaft 7a of the locking / unlocking motor 7, and a motor latch 8 projecting from the upper end of the motor latch 8. The pin 8a facing the notch 1d of the bar 1 so that the bar 1 can be retracted and retracted with respect to the locking portion 3 by the rotation operation of the locking / unlocking motor 7.
And a locking device. 2. A bar body 1 provided laterally on the door body A and capable of projecting and retracting with respect to a locking portion 3 formed at the opening edge of the case body B, and a bar provided near this bar body 1 and provided with a door. A cylinder lock 4 for emergency unlocking having a keyhole 4a on the front surface of the body A, and a plurality of cylinder locks 4 mounted between the cylinder lock 4 and the barb 1 and having their end portions connected in a direction intersecting each other at substantially right angles. It is composed of a member, and by the rotation of the cylinder lock 4 in the unlocking direction,
A notch formed between the lock fitting 6 for retracting the bar 1 from the engaging portion 3 in the direction of being retracted, and a notch formed at the lower end of the lock 1 and the end of the component member of the unlock fitting 6. The portion 1d, the locking / unlocking motor 7 arranged below the cutout 1d, the motor latch 8 fixed to the rotating shaft 7a of the locking / unlocking motor 7, and the upper end of the motor latch 8 And a pin 8a facing the notch 1d of the bar 1 so that the bar 1 can be retracted from the locking portion 3 by the rotation operation of the locking / unlocking motor 7. Locking device.