JPH0647101Y2 - Locking device for sliding doors - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a cylinder locking / unlocking device used for a sliding door of a house.

[Conventional technology]

A locking device for a sliding door, which is composed of a pair of an outer locking part and an inner locking part and can be locked and unlocked from inside and outside of a room, etc., is widely used. FIG. 4 shows an example of a simple lock device using a cylinder lock. In the figure, A is an external locking portion, and 1 is a key for locking and unlocking operations from the outside of the room. 2 is an outside body, 3 is a back plate, 4 is a cylinder lock, 5'is a quadrangular male operation member having a quadrangular cross section, and 6 '.
Is a coil spring for urging the cylinder lock outward. B is an inner locking part, 10 is a lock case, 11 is a female operating member, 11b is a space into which the male operating member 5'is fitted, 12 is a locking sickle metal, 13 is a locking / unlocking operation from the indoor side. It is a knob that does.

When locking and unlocking with key 1 from outside, key 1
After inserting the cylinder lock 4 into the cylinder lock 4 as shown in the figure, the cylinder lock 4 is moved to the right in the figure against the coil spring 6 ', and the male operating member 5'is inserted into the space 11b of the female operating member 11. ,
Rotate the key 1 to the right or left to rotate the sickle metal 12 to the arrow mark s or o to engage the striker 3a of the back plate 3,
It is locked and unlocked by being separated.

On the other hand, when locking and unlocking operations are performed from the indoor side, the knob 13
The female operating member 11 is directly rotated by raising the right side of the drawing and rotating to the left and right. Note that the knob 13 may be configured to slide instead of rotating.

[Problems to be solved by the invention]

In the conventional locking device described above, the key 1 is inserted to the rotatable position of the cylinder lock 4 and then further pushed to fit the male operating member 5'and the female operating member 11 to rotate the key. , Locking and unlocking operations are to be performed. Therefore, if the key 1 is inserted into the cylinder lock to a rotatable position, the key 1 can be rotated even if the male and female operation members are not fitted, and it is erroneously recognized that the key 1 is locked regardless of whether it is locked or not. It has a drawback.

The present invention is intended to solve the above-mentioned drawbacks of the prior art,
An object of the present invention is to provide a sliding door locking device in which male and female operation members are automatically fitted by inserting a key into a cylinder lock and locking can be reliably performed.

[Means for solving problems]

In order to achieve the above object, the present invention comprises an outer locking portion and an inner locking portion which are opposed to each other, and male and female operation members which are fitted to each other are provided in the outer locking portion and the inner locking portion. A lock device that is separately rotatable and can be locked and unlocked from inside or outside by operating a key or a knob of a cylinder lock fixed to the outer locking part, wherein a cylinder lock is formed on the male operation member. A slide protrusion that slides in the key groove, and spring means that presses the male operating member toward the cylinder lock. A key inserted in the cylinder lock pushes the slide protrusion at its tip, It is characterized in that the operating member is projected from the outer locking portion against the spring means and fitted into the female operating member.

[Action]

 The operation of the present invention will be described.

When you insert the key into the cylinder lock fixed to the outer lock,
The key comes into contact with the male operation member during the insertion. The male operating member is urged outward by the spring means, and the key presses the male operating member against the spring means so as to project from the outer locking portion and fit into the female operating member. When the key is inserted to the proper position in the cylinder lock, the male operation member is always fitted in the female operation member at that position, and the key operation can be surely performed the locking and unlocking operations.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. First
The figure is an exploded perspective view, in which A is an outer locking portion and B is
Is an internal locking part, and 1 is a key for locking and unlocking from the outdoor side.

The outer locking portion A has an outside body 2 on the outer side thereof, that is, on the left side in FIG. 1, and a cylinder lock 4 is attached thereto. The cylinder lock 4 has a key hole 4a and a groove 4b for guiding the inserted key, and the slide projection 5a at the rear end portion of the male operation member 5 is slidably fitted in the groove 4b. Has been done. The male operation member 5 is attached by a coil spring 6 and a joint ring 7 so as to be urged to the left side in the drawing. Then, the back cover 8 is attached so as to cover the entire cylinder lock 4 to the joint ring 7, and the screw 9 is attached.
Fixed by. The back plate 3 is attached from the outside of these to form the outer locking portion. The striker 3a for inserting the sickle metal into the back plate 3
Has been drilled.

The inner lock part B has a lock mechanism housed in a lock case 10.
The female operating member 11 is provided on the side facing the outer locking portion A, and the male operating member 5 is fitted therein and can be rotated. A sickle metal 12 is provided above the female operating member 11, and the female operating member 11
When is rotated in the locking direction, it engages with the striker 3a formed in the back plate 3, and when rotated in the unlocking direction, it is separated from the striker 3a. Although not shown, on the back side of the lock case 10, that is, the side facing the room, there is provided a slide type knob that can be locked and unlocked from the room side.

FIG. 2 is an assembly diagram in which the back plate 3 of the outer locking portion A is removed. The cylinder lock 4 is sandwiched between the outside body 2 and the back cover 8 and fixed by a screw 9 so that it cannot be moved. A groove 4b is formed in the cylinder lock 4, and the slide protrusion 5a of the male operating member 5 is formed.
Is slidably fitted. When the key 1 is inserted through the key hole 4a, the front end of the key 1 comes into contact with the rear end of the slide protrusion 5a at an intermediate position where the insertion is not completed. However, at this position, the key 1 cannot be rotated because the insertion is not completed. When the key 1 is pushed further in order to perform the key operation, the male operation member 5 projects to the position of the chain line in FIG. 2 (b) and fits into the female operation member. Therefore, it is necessary to insert the male and female operation members in order to operate the keys.
It can prevent erroneous operation.

The key can be the same as the key for unlocking the conventional cylinder lock, and it is not necessary to newly create it.

Next, regarding the male and female operation members, as shown in FIG. 5, in the conventional one, the fitting portion 11b of the female operation member is a square hole, and the male operation member 5'is also a square type that can be fitted therein. It was in shape. Therefore, if there is a deviation between the two angles, they cannot be inserted as shown in FIG. 5, and it is necessary to slightly rotate the male operating member 5'to the left and right to search.

In the present invention, the portion of the female operating member 11 into which the male operating member is fitted is a hollow space having a cylindrical shape, and a protruding rib 11a is provided upright at one location as shown in the cross section of FIG. ing. On the other hand, the male operation member 5 has a rounded tip portion so that it can be fitted easily, and at the cross section of the fitting portion, two step portions 5b, 5c which can abut the rib 11a as shown in FIG. Are formed.

FIG. 3 (a) shows the pivotal position of the female operating member 11 in the unlocked state, that is, the rib 11a is located on the lower side of the figure, which is not locked. The male operation member 5 can slide in and out of the groove 4b when the key 1 is taken in and out, and the key 1 can be taken in and out only when the key hole 4a is at the position shown in FIG. 2 (a). Therefore, the male operating member 5 can be engaged with and disengaged from the female operating member 11 only when the male operating member 5 is at the position shown in FIG. 3 (a) or (c), and these are the same as the male operating member 5. The position.

The male operation member 5 is inserted for locking, but as shown in FIG. 3 (a), the male operation member 5 is inserted at a rotational position where the step portion 5c and the rib 11a come into contact with each other. When the key is rotated clockwise, the male operation member 5 is locked by rotating the female operation member 11 together with the step portion 5c to the position (b). When locked, only the male operation member 5 rotates counterclockwise to return to the position at the time of fitting, that is, the position shown in (c), and the key can be pulled out.

When unlocking, the male and female operation members 5 and 11 are fitted again in the state of (c). After that, when the key is rotated counterclockwise, the step portion 5b comes into contact with the rib 11a to rotate the female operation member 11 together, and the rib 11a is moved to the lower side of the drawing to unlock. The key is pulled out by rotating the male operation member 5 up to the state of (a).

With such a structure of the male and female operating members, in the present invention, it is not necessary to search for inserting the male and female operating members as in the conventional case, and the locking and unlocking operations are facilitated.

[Effect of device]

As described above, according to the present invention, in the sliding door locking device including the outer locking portion and the inner locking portion that face each other,
By fixing the cylinder lock to the external locking part, sliding it in the groove of the cylinder lock, and inserting the key to the position where it can be rotated, the male operation member that is surely fitted into the female operation member is provided. If the member is not inserted into the female operation member, the key cannot be rotated, and an erroneous operation can be prevented.

Moreover, the same key as the conventional key can be used as the key of the cylinder lock, and it is not necessary to newly make it.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a configuration of an embodiment of the present invention, FIG. 2 is a view of an outer locking portion with a back plate removed, (a) is a front view, and (b) is a partially cutaway view. FIG. 3 is a cross-sectional view of the male and female operating members when they are fitted. (A) shows the start of locking, (b) shows the completion of locking, (c) shows the start of unlocking, and FIG. 4 shows a conventional example. FIG. 5 is a side view in which a part of FIG. 5 is cut away, and FIG. A ... Outer locking portion, B ... Inner locking portion, 1 ... Key, 4 ... Cylinder lock, 4b ... Groove, 5 ... Male operating member, 5a ... Sliding protrusion, 6 ...
Spring, 11 ... Female operating member, 12 ... Sickle metal.

Claims (1)

[Scope of utility model registration request] 1. An outer locking portion and an inner locking portion which are opposed to each other, and male and female operating members which are fitted to each other are provided on the outer locking portion and the inner locking portion so as to be separately rotatable. In a lock device that can be locked and unlocked from inside or outside by operating a key or a knob of a cylinder lock fixed to the outer locking part, sliding a key groove formed in the cylinder lock on the male operation member. Is provided with spring means for pressing the male operating member toward the cylinder lock, and a key inserted in the cylinder lock pushes the sliding projection at its tip, and the male operating member is moved to the spring means. A sliding door locking device, characterized in that it is projected from the outer locking portion and fitted to the female operating member.