JPH0322518B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an electric lock, and more particularly to an electric lock in which a locking element for restraining a dead bolt or latch of a door is disposed on the side of a door mounting frame in the axial direction of the door mounting frame. Regarding locks.

Conventional technology and its problems Conventionally, electric locks of this type are already known. However, in the prior art, when a force is applied to the door to open it, the locking member of the locking element in the door mounting frame is pressed against a stopper that restrains the member in a locked state. There is. For this reason, if the door is pushed in the opening direction by a pressure difference between indoors and outdoors, wind pressure, etc., the door cannot be unlocked unless the unlocking mechanism has a strong output to overcome the pressure. There is no guarantee that such forces will not be applied to the door. Therefore, the conventional technology requires a relatively large unlocking mechanism, and the entire locking mechanism including the locking element is also required to be relatively large, and there are considerable restrictions on the depth dimension of the applicable sash. However, there was a problem in that it could not be incorporated into the popular door mounting frame with a short depth such as 30 mm.

Problems to be Solved by the Invention Problems to be solved by the invention are the aforementioned problems of the prior art.

That is, an object of the present invention is to make an electric lock equipped with a locking element arranged in the axial direction of the door mounting frame on the side of the door mounting frame into a small size that can be applied to a sash with a depth dimension of 30 mm or less. to guarantee.

Means for Solving the Problems In order to achieve the above object, the present invention has the following configuration.

That is, the present invention provides a ratchet that prevents a door dead bolt or latch from rotating along with the door in the door opening direction and is rotatable around the axis of a door mounting frame, and a front cam that rotates together with the ratchet. , and a direction along the axis by rotation of the front cam in a direction corresponding to door opening,
A lock element includes a slide cam that is slid under slide support by a lock housing, and the ratchet, front cam, and slide cam are arranged in the axial direction of the door mounting frame to prevent the slide cam from sliding and to prevent the slide cam from sliding. The present invention relates to an electric lock characterized by having a stopper in a fixed position that is restrained so that the blocked state can be released by a solenoid.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

In the figure, 1 is a ratchet that can rotate around the axis of a door mounting frame (not shown), in other words, around the axis of a pivot shaft 2, and 3 is a front cam that rotates together with the ratchet 1. , 4 rotates the front cam 3 in the direction corresponding to opening of the door (not shown), that is, in the direction of the arrow A, and rotates the door mounting frame, that is, along the axis of the pivot shaft 2, that is, in the direction of the arrow. B is a slide cam that is slid under slide support by the lock housing, and the ratchet 1 and front cam 3 are pivotally connected to the lock housing (not shown) by a pivot shaft 2 using this as a common axis, and the end face of the ratchet 1 is Insert the protruding pin 5 into the pin hole 6 on the front cam 3. The front cam 3 has an inclined cam portion 7 on the side facing the slide cam 4, and the slide cam 4 has an inclined cam floor portion 8 corresponding to the cam portion 7. The ratchet 1, front cam 3, and slide cam 4 are assembled into the lock housing in such a manner that they are arranged in the axial direction of the door mounting frame.

Reference numeral 9 denotes a stopper that prevents the slide cam 4 from moving in the direction indicated by the arrow B. This stopper is rotatable around a fixed position pin 10, and the slide cam 4 is inserted into a slot 22 formed in the stopper 9. The pin 12 on the vertical portion 11 extending in the direction is fitted.

Reference numeral 13 denotes a lever that prevents the stopper 9 from rotating due to the slide of the slide cam 4. The lever 13 is latched to the stopper 9 by a solenoid 14, preferably a monostable latching solenoid incorporating a permanent magnet. to be restrained and released. The solenoid is energized (or demagnetized) and its plunger 15 and link 16
is used as a working medium to keep the lock on the stopper 9 restrained, and when demagnetized (or energized), the plunger 15 moves the lever 13 through the link 16 around the pin 17 in the fixed position in the clockwise direction in the figure. to release the lever 13 from the stopper 9. The link 16 is connected to the plunger 15 by a pin 18 and to the lever 13 by a pin 19.

20 is a spring that biases the ratchet 1 in the direction opposite to the arrow direction A, and 21 is a spring that biases the slide cam 4 toward the front cam 3.

The illustrated electric lock of the present invention operates as follows.

When the latch 1 is about to be rotated in the direction corresponding to the rotation, that is, in the direction of the arrow A in the door opening direction of the door bolt or latch, the front cam 3 rotates together with the latch 1. , the slide cam 4 attempts to retreat in the direction of the arrow B, but the lever 13, which is caught by the stopper 9 and is in a restrained state, prevents this. In this state, the door cannot be opened, that is, it is locked.

The lever 13 is moved in the direction of the arrow D by the solenoid 14.
When the lock is rotated to release the restraint of the stopper 9, the slide cam 4, front cam 3, and ratchet 1 are also released and become free, resulting in an unlocked state.

In the locked state, the slide cam 4 is prevented from moving in the direction of the arrow B, so by utilizing this, most of the rotational force when the door tries to open is absorbed by the lock of the present invention. It can be absorbed into the door mounting frame. The details are as follows.

The rotational force to open the door, that is, the rotational force of the ratchet 1 and front cam 3 assembly in the arrow direction A, tends to cause the slide cam 4 under the movement block to rotate in the arrow direction B. Therefore, if the support of the slide cam 4 to the lock housing is properly designed, for example, the slide cam 4 can be
If the slide cam 4 is supported in the lock housing in accordance with well-known means in the field of slide support technology, such as by slidingly fitting the vertical portion 11 of the lock housing into the lock housing, most of the rotational force required to open the door is absorbed. is transmitted to the inner wall of the lock housing through the vertical portion 11 of the slide cam 4 and its sliding counterpart, and is absorbed by the door mounting frame equipped with the lock of the present invention. When most of the turning force to open the door is absorbed by the door mounting frame,
When unlocking the electric lock on the door mounting frame, even if the door is pushed in the opening direction due to the pressure difference between indoors and outdoors, wind pressure, etc., the solenoid 14 activates lever 1.
The force required to rotate 3 in the direction of the arrow, that is, the force required to unlock the lock, may be small.

Effects of the Invention As described above, according to the present invention, even when the door is pushed in the opening direction due to pressure differences between indoors and outdoors, wind pressure, etc., the force required to unlock the lock on the door mounting frame side can be small. From there, place the lock element on the door mounting frame side.
The electric lock disposed in the axial direction of the door mounting frame can be made small enough to be applied to a sash with a depth of 30 mm or less.

[Brief explanation of the drawing]

The drawing is a perspective view showing an embodiment of the present invention in an exploded state. 1 is the ratchet, 2 is the pivot shaft, 3 is the front cam,
4 is a slide cam, 7 is an inclined cam part of the front cam,
8 is the inclined cam floor part of the slide cam, 9 is a stopper, 13 is a lever, and 14 is a solenoid.

Claims (1)

[Claims] 1 Preventing the door dead bolt or latch from rotating in the direction of opening the door with the door;
and a ratchet that can rotate in a direction around the axis of the door mounting frame, a front cam that rotates together with the ratchet, and a lock that can be locked in a direction along the axis by rotating the front cam in a direction corresponding to opening the door. A sliding cam is included as a lock element under sliding support by the housing, and the ratchet, front cam, and slide cam are arranged in the axial direction of the door mounting frame to prevent and prevent sliding of the sliding cam. An electric lock characterized by having a stopper in a fixed position whose state can be released and restrained by a solenoid.