JPH0720302Y2 - Locking device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a locking device for a one-way door.

[0002]

2. Description of the Related Art Conventionally, a locking metal fitting has been provided on an upper frame and a lower frame of a door frame while a locking piece is projected and locked by operating a handle and an upper rod and a lower rod are slid in a separating direction. There is already known a locking system in which the engaging fittings provided on the upper end of the upper rod and the lower end of the lower rod are engaged with each other.

However, since the doors of gymnasiums and the like are extremely long, the three-point locking of the doors above and below and in the middle cannot withstand the wind pressure as described above. A lock is provided for retracting the lock piece by using the slide of the rod. A screwing method or the like is used for connecting the upper rod and the lower rod to an operating mechanism such as a slider for retracting and retracting the lock piece.

[0004]

[Problems to be solved by the invention] When the lock is taken out from the vertical frame of the door by rotating the rod to release the connection between the slider and the rod during repair or replacement when the function of the lock is impaired. Since the locking fitting of the lower rod contacts the floor surface, the connection between the lower rod and the slider cannot be released. Therefore, there was a problem that the door had to be removed.

Therefore, an object of the present invention is to provide a locking device in which the lock can be removed without removing the door.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention proposes that a lock piece is locked by projecting a lock piece by operating a handle provided on at least one side of a single door. In a locking device in which the upper rod and the lower rod are slid to engage the locking brackets of the upper rod and the lower rod with the receiving bracket of the door frame, an auxiliary lock is fitted to the vertical frame of the door. Mounted and detachably attached, and a first engaging portion provided on the working body of the lock piece retracting mechanism of the auxiliary lock and a second engaging portion provided on the rod are fitted and engaged with each other. It was adopted.

[0007]

When the function of the auxiliary lock is lost, the auxiliary lock is removed from the door. At this time, the first engaging portion of the acting body is disengaged from the second engaging portion of the rod.

Also, a new or repaired auxiliary lock is fitted and fixed to the door. At this time, the first engaging portion of the working body is fitted and engaged with the second engaging portion of the rod.

[0009]

Embodiments of the present invention will be described below with reference to the accompanying drawings. As shown in FIG.
A lock 4 is provided to lock and lock the lock piece 3 by operating a handle 2 provided on at least one side.

Further, while the upper rod 5 and the lower rod 6 are slid in the separating direction with the locking, the upper end and the lower end of the upper rod 5 are attached to the receiving metal fittings 8 provided on the upper and lower frames of the door frame 7. A locking metal fitting 9 provided at the downward tip of the rod 6 is engaged.

A means for causing the lock piece 3 to project by operating the handle 2 and sliding the upper rod 5 and the lower rod 6 in the separating direction is, for example, as shown in FIG. When the upper oscillating body 11 is rotated, the dogleg-shaped lower oscillating body 13 having the support shaft 12 in the middle is
Since the upper end of the lock piece 3 and the lower end of the upper swing body 11 are connected to the end portion of the lock piece 3 via the pin 14, the lock piece 3 appears and disappears and the lower swing body 13 rotates.

Since the lower end of the upper slider 16 is connected to the upper end of the upper rocking body 11 via the pin 15 and the upper end of the lower slider 18 is connected to the lower end of the lower rocking body 13 via the pin 17, respectively. The upper rod 5 connected to the slider 16 and the lower rod 6 connected to the lower slider 18 slide.

Reference numeral 21 is an auxiliary lock which is fitted through an opening 22 provided at an appropriate position on the vertical frame of the door 1 and is detachably mounted. To attach the auxiliary lock 21, the plate 24 is fixed to the vertical frame via the screw 23.

Further, at the end of fitting after the attachment of the auxiliary lock 21, the first engaging portion 28 provided on the operating body 27 of the retracting mechanism 26 for retracting the lock piece 25 of the auxiliary lock 21.
And the second engaging portions 29 provided on the upper and lower rods 5 and 6 can be fitted and engaged. As shown in FIGS. 2 to 4, the first engaging portion 28 is provided with a horizontal groove on the opposing surface of the bifurcated piece of the working body 27, and the second groove is formed in this groove.
The outer periphery of the engaging portion 29 is adapted to fit in.

If a threaded portion 30 is provided on the rod as shown and the nut of the second engaging portion 29 is screwed into this threaded portion 30, the nut is rotated to move to a position suitable for fitting. Can be made.

The retracting mechanism 26 having the above-mentioned acting body 27 is
For example, as shown in FIG. 2, the action body 27 is guided by the long hole 31 and the pin 32 penetrating through the long hole 31 so as to slide in the vertical direction, and the action body 27 is inserted through the pin 32.
Slider 3 which is connected to and slides vertically in the lock box
3, the tip of a tilting body 35 having a support shaft 34 at the upper end and the middle thereof, and the end of the lock piece 25 and the end of the tilting body 35 are connected through a long hole 36 and a pin 37 penetrating the long hole 36, and the operation is performed. When the slider 33 is lowered together with the body 27, the lock piece 25 is projected while rotating the tilting body 35.

As shown in FIG. 1, the auxiliary locks 21 are provided on the upper rod 5 side and the lower rod 6 side, respectively.
It may be provided on one rod side.

[0018]

As described above, according to the locking device of the present invention, when the auxiliary lock is fitted into and fixed to the vertical frame of the door, the first engaging portion of the acting body and the second engaging portion of the rod are fitted together. Since the engaging lock is engaged, the auxiliary lock can be pulled out without removing the door for repair or replacement of the auxiliary lock.

[Brief description of drawings]

FIG. 1 is a front view of a locking device according to the present invention.

FIG. 2 is an enlarged front view of a vertical section of an auxiliary lock.

FIG. 3 is a plan view of the same as above.

FIG. 4 is an exploded perspective view of the above.

FIG. 5 is a vertical sectional front view of the lock.

[Explanation of symbols]

 1 door 2 handle 3 lock piece 4 lock 5 upper rod 6 lower rod 7 door frame 8 receiving metal fitting 9 locking metal fitting 21 auxiliary lock 22 opening 23 screw 24 plate 25 lock piece 26 retracting mechanism 27 working body 28 first engaging part 29 Second engaging portion

Claims (1)

[Scope of utility model registration request] 1. A lock piece is locked by projecting a lock piece by operating a handle provided on at least one side of a single door.
Also, in a locking device in which the upper rod and the lower rod are slid in the separating direction and the locking metal members of the upper rod and the lower rod are engaged with the receiving metal fittings of the door frame, the vertical frame of the door is placed at an appropriate position. The auxiliary lock is fitted and removably attached, and the first engaging portion provided on the working body of the lock piece retracting mechanism of the auxiliary lock and the second provided on the rod.
A locking device characterized in that the engaging portion is fitted and engaged.