JPH0419180Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to, for example, an electric door lock provided in a hotel guest room.

[Prior art]

In a conventional electric lock, a square core passes through the lock body, and an outdoor handle and an indoor handle are connected to both ends of the square core, respectively. The lock body is provided with a latch cam to which the square core is externally fitted, and a latch bolt that moves in and out in conjunction with the rotation of the latch cam.The square core and the latch bolt rotate in conjunction with the rotation of the handle. The latch bolt is recessed and the door can be opened. Furthermore, inside the lock body,
A cam stopper mechanism is provided that engages with the latch cam to prevent rotation of the latch cam, that is, rotation of the handle, and hold the latch cam in a locked state, and a solenoid for driving the cam stopper mechanism. When unlocking from the outdoor side, for example, by inserting a card from the outdoor side into a card reader provided in the lock body, the solenoid is activated by the built-in control means, whereby the cam stopper mechanism is activated. , and is moved to the unlocked position where it disengages from the latch cam. In this state, the handle can be rotated and the door can be opened.

[The problem that the idea aims to solve]

However, with the above-mentioned conventional electric door lock, when the door is locked, not only the handle on the outside side but also the handle on the indoor side does not turn, so if the door is configured as it is, it will not be possible to open the door from the indoor side. There is. Therefore, it is necessary to separately install a switch or the like on the indoor wall and use this switch to drive the solenoid. Therefore, in order to electrically connect this switch to the solenoid in the lock body, a problem arises in that wiring work must be performed between the wall and the door. In addition,
It is also possible to unlock the lock by inserting the latch bolt etc. into the lock using the thumb turn, but since the thumb turn is used as a means of unlocking in emergencies, it is not very desirable to use this thumb turn in normal times. do not have.

The present invention was developed in view of the above-mentioned conventional problems, and its purpose is to provide an electric door lock that can freely open the door from the indoor side without installing a separate switch on the indoor wall. It is about providing.

[Means to solve the problem]

In order to achieve the above object, the electric door lock according to the present invention is provided with a rotational force transmitting member that passes through the door and has both ends connected to a handle on the outdoor side and a handle on the indoor side. The recording power transmission member is separated into an indoor side and an outdoor side that can rotate independently of each other, and a locking/unlocking means for restricting only the rotation of the rotational force transmitting member on the outdoor side, and the locking/unlocking means. When an unlock signal is input in response to an unlocking operation on the outdoor side, an electric actuator that drives the locking/unlocking means is moved from the rotation restriction position of the outdoor rotation force transmission member to the rotation restriction release position. It is characterized by comprising a control means for operating the electric actuator so as to cause the electric actuator to be displaced, and a retractable member that retracts in conjunction with the rotational movement of each of the rotational force transmission members on the outdoor side and the indoor side. It is said that

[Effect]

According to the above configuration, the rotation of the outdoor rotation force transmission member is restricted by the locking/unlocking means;
In other words, even when the handle on the outdoor side is locked, the indoor rotational force transmission member is connected to the rotational force transmission member on the outdoor side for the handle on the indoor side that is connected to the rotational force transmission member on the indoor side. Since it can be rotated independently of the By performing this operation, the retractable member is recessed. Therefore, even if the door is held locked with respect to the handle on the outdoor side as described above, the door can be freely opened from the indoor side.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

In the electric door lock 1 according to the present invention, as shown in FIG. 1, the indoor case 2 and the outdoor case 3 are placed in a back-to-back arrangement with a door 4 in between. In the lower portions of both cases 2 and 3, there are an indoor corner core 5 and an outdoor corner core 6, which pass through the cases 2 and 3 and reach approximately the center of the door 4, as rotating force transmitting members. They are separated from each other and each is rotatably provided.

The outer ends 5a and 6a of the square cores 5 and 6 are provided with knobs and levers (not shown) as handles, and the inner ends 5b and 6b are as shown in FIGS. 2a and 2b. The latch cams 8 and 9 are respectively engaged with square holes 8a and 8b of latch cams 8 and 9 as cam members in the lock mechanism 7. A retractor 10 that slides in conjunction with the rotation of the latch cams 8 and 9 is provided near the latch cams 8 and 9. A latch bolt 11 is provided as a retractable member that retracts and retracts in conjunction with sliding.
A latch stopper 29 is provided above the latch bolt 11 to prevent the latch bolt 11 from retracting.

In addition, the latch cams 8 and 9 each include:
Notches 8b and 9b are formed, and one end 13a of the cam stopper 13 is formed in the notch 9b.
is engaged. As shown in FIG. 3, one end 13a of the cam stopper 13 is formed with a relief groove 13c at a location corresponding to the latch cam 8.
is not engaged with. The other end 13b of the cam stopper 13 is connected to the first projecting piece 14 of the cam joint 14 which is rotatably provided.
is engaged with a. The cam stopper 13 and the cam joint 14 constitute a cam stopper mechanism 12 as locking/unlocking means.

The second projecting piece 14 in the cam joint 14
b is provided near the cam joint 14 to turn on the unlock switch 15 when the engagement between the cam stopper 13 and the notch 9b is released. Further, a notch 14c is formed in this cam joint 14, and this notch 14c is engaged with a pin 18 provided at the tip of a plunger 17 in a solenoid 16 as an electric actuator.

This solenoid 16, as shown in FIG.
It is electrically connected to a control means 20 configured on printed circuit boards 19, 19. This control means 2
0 is, for example, a one-chip CPU equipped with I/O, ROM, and RAM. The printed circuit boards 19, 19 provided with the control means 20 are connected to the card 2.
The card reader 21 is placed directly above the card reader 21, which reads data recorded on the card 3, via a spacer 22. This card reader 21
is built into the outdoor case 3, and an opening 3a is formed in the outdoor case 3 at a position corresponding to the card insertion slot 21a of the card reader 21. Note that as the card 23, a magnetic card, an IC card, or the like is applied.

On the other hand, the battery box 2 that houses the internal battery 24
5 is built in the indoor case 2, and the battery box 25 in the indoor case 2
A removable lid 2a is provided at a location corresponding to . Moreover, in this electric door lock 1,
A thumb turn 26 is provided on the indoor side for use in an emergency, and a cylinder 28 is provided on the outdoor side for locking and unlocking with a key 27. A shut-out indicator 30 is provided below this cylinder 28.

In the above configuration, when the card 23 is inserted into the card reader 21 and the control means 20 determines that the card 23 is a compatible card, the plunger 17 in the solenoid 16 retreats in the A direction. This plunger 1
The cam joint 14 is rotated in the B direction by a pin 18 provided at the tip of the cam joint 7. This rotation of the cam joint 14 in the B direction causes the second protrusion 14b of the cam joint 14 to open the unlock switch 15.
is turned on, and the first projecting piece 14a moves the cam stopper 13 in the C direction. This results in
The engagement between the notch 9b in the latch cam 9 and the cam stopper 13 is released, and the latch cam 9 becomes rotatable. At the handle on the outdoor side, attach the square core 6 above.
By rotating the latch cam 9 in the D direction using the square core 6, the retractor 10 slides in the E direction.

By sliding this retractor 10 in the E direction,
The restriction on retraction of the latch bolt 11 in the latch stopper 29 is released, and the latch bolt 11 retracts into the locking mechanism 7. Thereby, the door 4 provided with this electric door lock 1 can be opened from the outside of the room.

On the other hand, when the electric door lock 1 is opened from the indoor side, the cam stopper 13 and the latch cam 9 engage with each other, so that the rotational operation of the handle on the outdoor side is restricted, and the rotation of the handle on the outdoor side is restricted. Even when the locked state is maintained, the latch cam 8 on the indoor side is located in the relief groove 13c in the cam stopper 13, so the rotation of the latch cam 8 is not restricted by the cam stopper 13. . Therefore, it is possible to rotate the handle on the indoor side, and with this operation, the indoor corner core 5 and the latch cam 8 sequentially rotate, thereby locking the latch bolt 11 into the locking mechanism 7. can be immersed in. As a result, the door can be opened freely from the indoor side.

[Effect of idea]

As described above, the electric door lock of the present invention is an electric door lock equipped with a rotational force transmission member that penetrates the door and has both ends connected to the handle on the outdoor side and the handle on the indoor side, respectively. The transmission member is separated into an indoor side and an outdoor side that can rotate independently of each other, and
A locking/unlocking means that restricts only the rotation of the rotating force transmission member on the outdoor side, an electric actuator that drives the locking/unlocking means, and when an unlocking signal is input in response to an unlocking operation on the outdoor side, control means for operating the electric actuator to displace the locking/unlocking means from a rotation restriction position of the outdoor rotation force transmission member to a rotation restriction release position; This configuration includes projecting and retracting members that retract in conjunction with each rotational movement.

Therefore, even if the handle on the outdoor side is held in a locked state, rotation of the handle on the indoor side causes the projecting and retracting member to retract. Therefore, the door can be freely opened from the indoor side without requiring wiring work to install a separate switch on the indoor wall as in the past. This effect is achieved.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing one embodiment of the present invention;
Figure a is an explanatory view showing the internal structure of the locking mechanism, Figure b is a sectional view taken along the line X--X in Figure a, and Figure 3 is a detailed view of the cam stopper. 1 is an electric door lock, 2 is an indoor case, 3 is an outdoor case, 5 and 6 are square cores (rotational force transmission members), 7 is a lock mechanism, 8 and 9 are latch cams (cam members), 11
is a latch bolt (retractable member), 12 is a cam stopper mechanism (locking/unlocking means), 13 is a cam stopper,
14 is a cam joint, and 16 is a solenoid (electric actuator).

Claims (1)

[Scope of Claim for Utility Model Registration] An electric door lock equipped with a rotating force transmitting member that penetrates the door and has both ends connected to a handle on the outdoor side and a handle on the indoor side, wherein the rotating force transmitting members are independent of each other. A locking/unlocking means that is separated into an indoor side and an outdoor side that can be rotated, and that restricts only the rotation of the rotation force transmission member on the outdoor side, an electric actuator that drives this locking/unlocking means, and an electric actuator that drives the locking/unlocking means; When an unlocking signal is input in response to an unlocking operation, the electric actuator is actuated to displace the locking/unlocking means from a rotation restriction position of the outdoor rotation force transmission member to a rotation restriction release position. 1. An electric door lock comprising: a control means for controlling the door; and a projecting/retracting member that retracts in conjunction with the rotational movement of each of the rotational force transmission members on the outdoor side and the indoor side.