JPH063083B2 - Sliding door locking device - Google Patents

Description

The present invention relates to a locking device for a sliding door using two or more sliding doors.

[Conventional technology]

As a locking device for a sliding door, there is one described in Japanese Patent Publication No. 58-13709.

According to this known technique, one of the fitting parts of the sliding door is provided with an outer locking part on the outdoor side and the other is an inner locking part on the indoor side. A cylinder lock is used from the outside and a push button is used to move up and down from the room. By operating the drive plate to rotate the sickle-shaped locking plate attached to one sliding door, the locking plate is engaged with and disengaged from the engaging hole provided in the other sliding door.

[Problems to be Solved by the Invention]

In the above-mentioned conventional technique, the sickle-shaped locking plate rotates in the vertical direction about the horizontal axis, and although it is locked in the horizontal direction, it opens in the inside / outside direction, that is, between the inside and outside sliding doors. It easily disengages when directional force is applied.

In addition, since the locking plate is vertical and weak against lateral force and easily bent, if lateral force acts on the sliding door in the locked state, rattling may occur and the locking plate may bend. There's a problem. Further, there is also one in which the locking member is rotated around a vertical axis, but in this publicly known one, the inner and outer edges of the locking member are formed in an arc shape substantially concentric with the rotation center, and the width thereof is at the inner end. It is slightly wider toward the other side, and this one has an action of pulling the mating sliding door when locking, but the engaging part of the mating sliding door with which the locking member engages is an opening provided in the metal plate. Therefore, there is a problem that the frictional resistance at the time of locking is large.

SUMMARY OF THE INVENTION An object of the present invention is to provide a sliding door locking device that solves the problems of the conventional sliding door locking device described above and can perform strong locking.

[Means for Solving the Problems]

In order to achieve the above object, the present invention uses a roller that rotates around a vertical axis as an engaging portion of a mating door with which a locking member engages, and the roller contact edge of the locking member has a linear shape, When the edge comes into contact with the roller, the roller mounting side sliding door is moved closer to the locking member mounting side sliding door so that the contact edge approaches the rotation center of the locking member from the outer end to the rear end, and the locking member The outer circumference of the member is an arc that is substantially concentric with the center of rotation of the locking member.

[Action]

This invention has the above-mentioned structure, and when the operating means provided on one of the sliding doors is rotated by the key with the sliding door being closed,
The driving means provided on the other sliding door is actuated to rotate the locking member around the vertical axis and engage with the engaging portion of the one sliding door to be locked.

Further, according to the present invention, the engaging portion of one of the sliding doors is a roller, the roller contact edge of the locking member is a straight line, and the shape is such that the rotation center of the locking member approaches from the outer end to the rear end. Therefore, when locking, the contact edge of the locking member presses against the roller of the mating sliding door and moves while rotating the roller, and together with this roller, the sliding door is brought closer to the sliding door, and at the same time, the sliding door is opposed to the sliding door. The ends of the sliding doors are crimped to both ends of the opening of the building having the sliding door so as to eliminate rattling of the sliding door.

〔Example〕

In the embodiment shown in the drawings, A is an outdoor sliding door and B is an indoor sliding door.

A front plate 1 and a rear plate 2 are fixed to the outer surface and the inner surface of the assembling portion of the sliding door A, a holding cylinder 3 is fixed between the both plates 1 and 2, and a holding cylinder 3
The cylinder lock 4 is fixed inside, and the front end of the rotor 5 is exposed on the front surface of the front plate 1.

Reference numeral 8 is an angular shaft as a transmission shaft that is attached to the inner end of the rotor 5 of the cylinder lock 4 so as to move back and forth. It rotates with the rotor 5 and when the key is inserted into the key hole of the rotor 5, the rear end is held. When the key protrudes from the rear end of the cylinder 3 to the rear of the rear plate 2 and the key is completely inserted, the rotor 5 and the angular shaft 8 rotate together by this key. It is designed to return to the original position in the figure.

An engagement hole 10 is provided near the lower part of the rear plate 2, and the hole 10
The roller 1 is provided by a vertical shaft between support pieces 11 provided above and below the roller 1.
2 is attached rotatably.

The front plate 14 and the rear plate 15 are fixed to the front and rear faces of the assembling portion of the indoor sliding door B, and the guide frame 16 having a rectangular cross section is fixed between the both plates 14 and 15.

An opening 17 facing the engaging hole 10 of the rear plate 2 of the outdoor sliding door A is provided near the lower part of the front part of the front plate 14 and the guide frame 16.

18 is inside the frame 16 at the position of the opening 17,
It is a sickle-shaped locking member rotatably mounted by a vertical shaft 19 and has a vertical contact edge 13.

The locking member 18 rotates around a shaft 19 and engages with the roller 12 in the engaging hole 10 of the outdoor sliding door A as shown by a chain line in FIG.

Reference numeral 20 in FIGS. 1 and 2 denotes a drive frame having a U-shaped cross section mounted in the frame 16 so as to be able to move up and down, and 21 denotes a spring for pushing the drive frame 20 upward.

A lower end of one side of the drive frame 20 serves as a cam 22, and the cam 22 has a roller 23 attached to a rear portion of the locking member 18.
Is pressed by the elastic force of the spring 24.

A gear support frame 25 is fixed to the inside of the portion of the guide frame 16 overlapping the front plate 14, and the front and rear bosses of a pinion gear 26 mounted in the frame 25 are attached to the front hole of the guide frame 16 and the rear portion of the frame 25. It can be attached to the hole of and not movable back and forth.

Further, a square hole 27 is provided at the center of the gear 26, and the square hole 27 is made to face the hole 28 of the front plate 14.
Is a position facing the angular axis 8 of the outdoor sliding door A.

A rack gear 31 is fixed to the inner surface of one side of the drive frame 20 as shown in FIG. 4, and the rack gear 31 is engaged with the pinion gear 26 as shown in FIG.

Reference numeral 32 in FIG. 2 denotes a sliding plate that is vertically movable in a vertical guide groove 33 inside the rear plate 15, and a knob 34 integrally provided on the outer surface thereof is loosely fitted in a vertically long hole 35 of the rear plate 15. And then project outside.

A shaft 36 integrally provided on the inner surface of the sliding plate 32 is loosely fitted in a vertically long hole 37 of the guide frame 16 and engaged with a notch 38 at the upper end of the drive frame 20.

Reference numeral 39 is a lock member that is mounted on the upper portion of the guide frame 16 so as to be able to move back and forth.
Is projected from the hole 41 of the front plate 14, and when the outdoor sliding door A comes to this position, the protrusion 40 by the sliding door A is pushed in.

Therefore, the outer end of the protrusion 40 is formed in an arc shape so that the protrusion 40 does not become a hindrance when the sliding doors A and B are opened and closed.

The locking member 39 has a locking portion 43 at a lower portion near the rear portion.
At the forward position of the member 39, that is, the open position of the sliding door A, the locking member 18 is prevented from protruding from the sliding door B by engaging with the pin 44 of the drive frame 20 in the raised position.

Next, the operation of the above embodiment will be described. Sliding doors A and B
In the state that the summing section is overlapped with closed,
As shown in FIGS. 1 and 2, the protruding piece 40 of the sliding door B is pushed in by the sliding door A and the locking portion 43 of the lock member 39 is disengaged from the pin 44.

Further, since the drive frame 20 is lifted by the spring 21 until it hits the lower portion of the lock member 39, the locking member 18 moves to the third position.
It is in the retracted position as shown.

Next, when a key is inserted into the key hole of the rotor 5 of the cylinder lock 4 and pushed in, the tip of the key pushes the angular shaft 8 backwards against the spring 9, so that the sliding door B has a corner of the pinion gear 26. The square shaft 8 engages with the hole 27.

In this way, while pressing the square shaft 8, the rotor 5 and the key
When is rotated, the pinion gear 26 is rotated together with the angular shaft 8 in the locking direction, and the drive frame 20 is lowered via the rack gear 31.

When the drive frame 20 descends, the slope 2 of the cam 22 at its lower end
9 pushes the roller 23 of the locking member 18 to rotate the member 18 about the shaft 19.

The tip of the locking member 18 rotated as described above projects from the opening 17 of the front plate 14 and is fitted into the engaging hole 10 of the rear plate 2 as shown by the chain line in FIG. 3 and in FIG. Engage 12.

When the locking member 18 is sufficiently engaged with the roller 12 in this manner, the cam 22 is in a state of receiving the roller 23 at the vertical edge 30 at its end as shown in FIG. 5, so that a reverse force acts on the locking member 18. Even if it does not return to the unlocked position.

When the key is removed from the key hole of the rotor 5 in the completely locked state as described above, the angular shaft 8 is returned to its original position by the spring 9.

In addition, unlocking may be performed in the reverse order.

Next, when locking from the room without using a key, the knob 34 may be pushed down to lower the sliding plate 32.

That is, when the sliding plate 32 descends, the shaft 36 integrated with the sliding plate 32 pushes down the drive frame 20 to perform locking similar to the case where a key is used, and when the knob 34 is pushed up, it is unlocked.

Also, with the drive frame 20 raised when unlocked, the indoor sliding door B
When the projecting piece 40 of the drive frame 2 is projected, the locking portion 43 of the lock member 39 engages with the pin 44 as shown in FIG.
The downward movement of 0 is prevented, and the locking member 18 is prevented from protruding from the opening 17.

FIG. 8 shows a state in which two sliding doors A and B are locked at the assembly portion. In this case, as shown in FIG.
Since the contact edge 13 of the contact roller obliquely contacts the roller 12, the reaction force of the pressing force generated at the contact point between the contact edge 13 and the roller 12 causes the sliding doors A and B to move in the opposite directions as shown by arrows in FIG. It becomes the pushing force. Therefore, the sliding doors A and B are crimped to the vertical frames 45 at both ends of the opening of the building, and a strong lock without rattling can be performed.

〔The invention's effect〕

According to the present invention, as described above, the locking member is formed into a sickle shape which rotates about the vertical axis, and the locking member is adapted to engage with the vertical roller of the mating sliding door, and the roller contact edge of the locking member. Is a straight line, and has a shape that approaches the rotation center of the locking member from the outer end to the rear end, so that the contact edge draws the contact portion of the sliding door at the time of locking and each sliding door opens in the building. When the door is closed, each sliding door is fixed without rattling by the force of crimping to the vertical frames on both sides of the section, and the contact edge is linear and contacts the roller to draw the mating sliding door. As compared with the contact edge having a circular arc shape, the crimping force at the time of locking is large, and the base of the locking member is extremely wide as compared with the tip thereof, so that it is strong and the like.

[Brief description of drawings]

FIG. 1 is a partially longitudinal side view showing an embodiment of a locking device according to the present invention, and FIG.
Fig. 2 is a cross-sectional plan view taken along the line III-III in Fig. 2, Fig. 4 is a vertical cross-sectional view showing the actuation mechanism of the drive frame, Fig. 5 is a partially longitudinal side view showing the locked state of the locking member, and Fig. 6 is FIG. 5 is an enlarged cross-sectional plan view of line VI-VI, FIG. 7 is a vertical sectional side view of the lock member mounting portion,
FIG. 8 is a plan view showing a locked state of a sliding door having the device of the present invention, and FIGS. 9 and 10 are exploded perspective views. A ... outdoor sliding door, B ... indoor sliding door, 4 ... cylinder lock, 5 ... rotor, 8 ... square shaft, 12 ... roller, 18 ... locking member, 19 ... vertical shaft, 20 ...... Drive frame, 22 …… Cam, 26 …… Pinion gear, 27 …… Square hole, 29 …… Cam slope, 30 …… Cam vertical edge, 31 …… Rack gear, 34 …… Knob, 45 …… Vertical frame.

Claims (1)

[Claims] 1. A locking member and a driving means for the locking member are provided on one of the sliding doors, and an engaging portion for engaging and disengaging with the locking member is provided on the other sliding door,
A locking device for a sliding door in the form of a sickle, which has an operating means for engaging and disengaging the drive means by operating a key, and operating the drive means, wherein the lock member is a sickle-shaped sliding door that rotates about a vertical axis. The engaging portion of the mating sliding door engaged with is a roller that rotates around a vertical axis, and the shape of the roller contact edge of the locking member is a straight line, and when the contact edge contacts the roller, the roller mounting side sliding door is a locking member. The contact edge is moved closer to the rotation center of the locking member from the outer end to the rear end so as to be closer to the mounting side sliding door, and the outer periphery of the locking member is substantially concentric with the rotation center of the locking member. Locking device for sliding doors with a circular arc.