JPH08189236A - Lock device of sliding door - Google Patents

Abstract

PURPOSE: To simplify the structure so as to realize the reduction of cost by keeping a stopper from being easily broken even if a smoke return or the like is brought into contact with the stopper. CONSTITUTION: A stopper 5 is disposed in such a manner as to be freely projected to the lock side by an elastic body 8 on a case 4 provided on a frame. The stopper 5 is constructed in such a manner as to be projected at the time of lock. A rounded or tapered receiving part 5c is formed on the back of the working side of the tip of the stopper 5. The stopper 5 is moved backward to the case 4 side according to the external force applied to the receiving part 5c when the stopper 5 is projected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock device used for a sliding door.

[0002]

2. Description of the Related Art Conventionally, various inventions have been made for a lock device used for a sliding door such as a sliding door for both a crescent and an auxiliary locking device. First, a conventional technique disclosed in Japanese Utility Model Laid-Open No. 63-5171 will be described with reference to FIG. 5 as an example of the conventional technique of the auxiliary lock device.

In this prior art, the auxiliary rule is that the outdoor sliding door 11
A case 12 fixed to the horizontal frame 11a of the first case, a first stopper 13 and a second stopper 14 provided in the case 12, and a first push button 17 and a second push button 18 for operating them. And the slide members 19 and 19, the push buttons 17 and 18 are urged by the spring 15 in a direction against the retracting direction when the push buttons 17 and 18 are not pressed.

When either of the push buttons 17 and 18 is pushed in this state, the slide member 19 is retracted by the guide of the inclined groove 21, so that the locking projection 19b is disengaged from the locking projection 20 of the stopper, and the stopper is released. 13 or 14 is projected by the bias of the spring 15. Further, when the stopper 13 or the stopper 14 is pressed to be retracted into the holding portion 16, the locking projection 20 rides over the locking projection 19b of the slide member 19 and is locked. As a result, the retracted state of the stopper 13 or 14 in the housing 12 is maintained.

As described above, when the stopper 15 or 16 is projected by the push button 17 or 18 in the state where the sliding sliding door is closed, the indoor sliding door 11 'is stopped.
Or, it is locked to 14 and its sliding is prevented. Therefore, in the closed state, the door can be locked by the stopper 13 or 14 of the auxiliary law.

In such a conventional technique, although the function as the stopper is sufficiently fulfilled, the stopper crosses the movement trajectory of the internal shoji, and therefore interferes with the smoke return of the summing frame of the internal shoji, etc. The stopper or both members could be damaged.

[0007]

SUMMARY OF THE INVENTION The present invention has been invented to solve the above-mentioned drawbacks of the prior art, and the object of the present invention is to make it easy even if a smoke flap or the like contacts the stopper. It is an object of the present invention to provide a lock device that is not damaged and that can be realized at low cost by simplifying the structure.

[0008]

In the locking device for a sliding door according to the present invention, a stopper is provided so as to project freely by an elastic body with respect to a case provided in a frame, and the stopper is configured to project when locked. A rounded or tapered receiving portion is formed on the back surface of the tip of the working side, and the stopper is retracted to the case side according to an external force applied to the receiving portion when the stopper is projected.

[0009]

According to the present invention, the sliding door normally has a lock function, but the stopper having the locking function is retracted against an external force in the opposite direction against the elastic body to damage the locking device and the sliding door. Not have a safety action.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 4 is a front view of a sliding door equipped with a locking device according to an embodiment of the present invention as seen from the inside, and FIG. 5 is a partial perspective view of the sliding door in the vicinity of the locking device.

The locking device A of this embodiment is mounted on the horizontal frame 2a below the outdoor sliding door 2 which is a sliding sliding door constructed by building an outdoor sliding door 2 and an indoor sliding door 3 in a frame 1 as shown in the figure. ing.

The lock device A is a horizontal frame 2a of the outdoor sliding door 2.
The case 4 is fixed to the case 4, a stopper 5 provided in the case 4, a push button 6 for operating the stopper 5, a roller 7, and the like.

As shown in FIG. 4, the case 4 is fitted and fixed in the vicinity of the right end of the horizontal frame 2a so as to face the indoor side. As shown in FIGS. 1 and 2, the case 4 includes a stopper holding portion 4a that holds the stopper 5 so that the stopper 5 can be retracted to the inside of the room, and a push button holding portion 4b that holds the push button 6 so that the push button 6 can be retracted. It is formed via the partition wall portion 4d. Both of the holding portions 4a and 4b are formed in a quadrangular cross section.

The stopper 5 is formed in a hollow quadrangular shape which fits the stopper holding portion 4a, and has a protrusion protruding outward at its tip. The opposite side of the protrusion from the lock acting surface, that is, the back side is formed as a taper or an R-shape as shown in FIGS. 1 and 2 as the external force receiving portion 5c.

The stopper 5 is held in the stopper holding portion 4a so as to be retractable and retractable, and is elastically supported by a rear lid 9 provided in the stopper holding portion 4a, that is, a spring 8 so as to be able to project to the inside of the room. Being energized.

By the biasing force of the spring 8, the stopper 5 projects toward the running portion of the indoor sliding door 3 to the position where the locking projection 5a is locked to the locking edge 4c of the stopper holding portion 4a. Then, the sliding door 3 collides against the protruding stopper 5 and the sliding thereof is blocked. That is, the sliding sliding door is locked.

When the lock is released, the stopper 5 is largely pushed back against the spring 8 so that the stopper 5 can be completely retracted into the stopper holding portion 4b. On the other hand, the push button 6 is formed in a hollow quadrangular shape that fits inside the push button holding portion 4b, and is held so as to be retractable inside the push button holding portion 4b. Further, like the stopper 5, the spring 8 provided in the push button holding portion 4b constantly urges the push button holding portion 4b outward.

The push button 6 is a push button holding portion 4b.
To prevent it from protruding from the case 4 or push button 6
A locking projection is formed on the. In this embodiment, the push button 6 is configured so as not to project outside the case 4 by being locked to a roller 7 described later. That is, the roller 7 also serves as the locking projection.

The stopper 5 and the push button 6 are separated from each other for a certain period of time to form a partition wall 4d of the case 4, and as shown in FIG.
Further, as shown in FIG. 2, a recess 5b is formed on the side wall of the stopper 5. Further, a retreat portion 6b is also formed on the side wall of the push button 6 facing the retreat portion 5b of the stopper 5.

These partition walls 4d and both retreating parts 5
A cylindrical roller 7 having a constant length is arranged in the space formed by b and 6b. With this arrangement, the roller 7 shown in FIG.
As shown in FIG. 5, the roller 7 is pressed against the stopper 5 side by the side surface of the push button 6 and is positioned on the retracted portion 5b side of the stopper 5, and thus the stopper 5 holds the state in which it does not project against the spring 8.

That is, since the roller 7 is constructed so as not to move to the room side by contacting the partition wall portion 4d, the roller 7 fixes the stopper 5 to the stopper holding frame 4
It is held against the spring 8 in a.

Further, since the push button 6 is formed with a locking projection for the roller 7, the push button 6 is attached by the spring 8 in the direction against the retraction direction when the push button 6 is not pushed. The stopper 5 is held in the stopper holding portion 4a because it is biased and is prevented from projecting by the locking projection. The locking protrusion may be formed on the inner wall of the case.

When the lock device A for the sliding door is operated, when the push button 6 is pushed or retracted into the case 4 against the spring 8 by the hand or foot, the roller 7 pushes the push button 6 as shown in FIG. It moves to the push button 6 side along the receiving inclined portion 6b by the pressing force of the spring 8 on the stopper 5 side.

As a result, the stopper 5 is not restrained by the movement of the roller 7 to the push button 6 side and protrudes toward the indoor side. In this state, the movement of both the indoor side sliding door 3 and the outdoor side sliding door 2 is locked.

To release this locked state, the stopper 5 is largely retracted into the stopper holding portion 4a, and the roller 7 moves to the retracted portion 15b of the stopper 15, so that the push button 6 is moved to the indoor side. It moves and blocks the movement of the roller 7. As a result, the stopper 5 is held in the stopper holder 4a as shown in FIG.

Even if the stopper 5 is pressed from the locked state to the inside of the case 4 by a slight distance, the stopper 5 is not restricted by the roller 7 unless the roller 7 engages with the retracted portion 5b on the stopper 5 side, and the locked state is maintained. Return to. This is
For example, it means that the lock is not released and the lock device is not damaged even if the smoke flaps of the opposite sliding doors collide with each other.

In the embodiment, the roller has a cylindrical shape.
It may be one or a plurality of spheres. Further, the roller may be pivotally supported by a swing arm provided on the partition wall portion 4d of the case 4.
Although the lock device of the embodiment is most suitable as the auxiliary lock device, it may be adopted as the main lock device.

Further, in the embodiment, the lock device composed of one set of push button and stopper is shown, but two or more sets may be arranged side by side. Further, the lock device is not limited to the above embodiment, and the stopper may be retracted with respect to the external force from the sliding door such as the inner shoji. For example, a simple structure may be used in which an elastic body is interposed in a lock rod that is configured to extend and contract, and an inclined surface formed on the back surface of the lock rod is used.

[0029]

According to the present invention, with the above construction, the construction of the locking device for the sliding sliding door is simplified, and at the same time, the stopper can be easily retracted against external force other than the locking action without adding a special construction. To prevent the lock device from being damaged. Further, there is an effect that it is possible to return to the locked state by the elastic force according to the disappearance of the external force.

[Brief description of drawings]

FIG. 1 is a horizontal sectional view of a locking device for a sliding door according to an embodiment of the present invention when locked.

FIG. 2 is a horizontal sectional view of the lock device when unlocked.

FIG. 3 is a front view of a sliding door provided with a locking device according to an embodiment of the present invention.

FIG. 4 is a partial perspective view of a mounting portion of the lock device in FIG.

FIG. 5 is a horizontal cross-sectional view of a lock device for a sliding door showing a conventional technique.

[Explanation of symbols]

 A ... Lock device 1 ... Frame 2 ... Outdoor sliding door 2a ... Horizontal frame 3 ... Indoor sliding door 4 ... Case 4a ... Stopper holding part 4b ... Push button holding part 4c ..Locking edge 4d..Partition wall 5 ... Stopper 5a..Locking protrusion 5b..Retracting part 5c..Receiving part 6 ... Push button 6b..Retracting part 7 ... Roller 8・ ・ ・ Spring 9 ・ ・ ・ Lid 10 ・ Auxiliary housing 11 ・ Outdoor sliding door 11a ・ Horizontal frame 11 '・ ・ Indoor sliding door 12 ・ ・ Case 13 ・ ・ Stopper 14 ・ ・ Stopper 15 ・ ・ Spring 16 ・・ Holding part 17 ・ ・ Push button 18 ・ ・ Push button 19 ・ ・ Slide member 19b ・ Locking projection 20 ・ ・ Locking projection 21 ・ ・ Inclined groove

Claims (1)

[Claims] 1. A stopper is disposed so as to be capable of projecting by an elastic body with respect to a case provided in a frame, and the stopper is configured to project when locked, and the rear end of the tip of the stopper has a rounded shape or a tapered shape. A locking device for a sliding door, characterized in that the receiving part is formed and the stopper is retracted to the case side in response to an external force applied to the receiving part when the stopper is projected.