JP2869057B1 - Lock handle device with internal emergency release function - Google Patents

Abstract

A lock handle device with an internal emergency release function that can separate the shaft of an inner handle unit from the shaft of an outer handle unit and independently operate the inner handle unit. SOLUTION: A connecting cylinder 7 fixed to a rear end portion of a shaft 8 of an outer handle unit 4 is provided with a radial through hole 6, and a receiving hole 13 into which the connecting cylinder 7 is fitted is provided with a shaft 12 of the inner handle unit 9. The lock shaft 11 is fitted to the shaft 12 of the inner handle unit 9 so as to be movable in the front-rear direction, and the lock shaft 11 is urged forward by the spring member 19, so that the hard ball 5 is inserted into the through hole 6 of the connection cylinder 7. When abutting against the peripheral surface of the front end portion 11a of the lock shaft 11, when a part of the hard ball 5 is engaged with the receiving groove 13a on the inner surface of the receiving hole 13, when contacting the peripheral surface of the small diameter portion 11b, A part of the hard ball 5 escapes from the receiving groove 13a, and the stopper member 14 is connected to the shaft 12 of the inner handle unit 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock handle device with an inside emergency opening function used for a door of a shelter or the like.

[0002]

2. Description of the Related Art In a lock handle device for a shelter in which a shaft of an outer handle unit is connected to a shaft of an inner handle unit, an operation handle of the outer handle unit is locked or the outer handle unit is damaged by a blast or the like. Thus, when the shaft of the outer handle unit is in a non-rotatable state, the operation handle of the inner handle unit cannot be rotated to unlock the door. For this reason, people in the shelter cannot escape on their own, and there is a risk that they will be left trapped.

[0003]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a lock handle device with an internal emergency release function in which the shaft of the inner handle unit is separated from the shaft of the outer handle unit so that the inner handle unit can be operated independently. To provide.

[0004]

Means for Solving the Problems A lock handle device with an inside emergency opening function according to the present invention comprises an outer handle unit 4 mounted on the outside of the door 2, an inner handle unit 9 mounted on the inside of the door 2, A connecting cylinder 7 fixed coaxially to the rear end of the shaft 8 of the outer handle unit 4 and having a radial through hole 6, and a receiving hole 1 into which the connecting cylinder 7 is fitted.
The shaft 12 of the inner handle unit 9 and the shaft 12 of the inner handle unit 9 are provided coaxially at the front end.
And coaxially fitted into the connecting cylinder 7 so as to be movable in the front-rear direction.
1b, a spring member 19 for urging the lock shaft 11 to move in the forward direction, and the through-hole 6 of the connecting cylinder 7.
When abutting on the peripheral surface of the front end portion 11a of the lock shaft 11, a portion thereof engages with the receiving groove 13a on the inner surface of the receiving hole 13 while abutting on the peripheral surface of the small diameter portion 11b of the lock shaft 11. At this time, a part of the hard ball 5 escapes from the receiving groove 13a, and the stopper member 14 is connected to the shaft 12 of the inner handle unit 9.

In a normal state, the lock shaft 11 is held at the forward position by the action of the spring member 19,
The front end 11 a of the lock shaft 11 is located at a position facing the through hole 6 of the connecting cylinder 7, and the hard ball 5 is engaged with the receiving groove 13 a of the receiving hole 13 and the through hole 66 of the connecting cylinder 7. for that reason,
The shaft 12 of the inner handle unit 9 and the connecting tube 7 are interconnected, and when the operation handle 22 of the outer handle unit 4 is rotated with respect to the fixed base 24, the shaft 12 of the inner handle unit 9 is
And the stopper member 14 is separated from the receiving member 16 on the fixed frame 1 side of the shelter. By this, door 2
Is unlocked, the door 1 can be opened from the outside.

In an emergency, when the operating handle 22 is locked to the fixed base 24, or when the shaft 8 of the outer handle unit 4 is in a non-rotatable state due to a blast or a collision of another object, the person inside the shelter cannot use a spring member. Pull the lock shaft 11 forward against the small-diameter portion 19 of the lock shaft 11.
1b is moved to a position facing the through hole 6 of the connecting cylinder 7.
This movement causes the hard sphere 5 to move toward the center of the connecting cylinder 7 through the through hole 6.
As a result, the hard ball 5 escapes from the receiving groove 13 a of the receiving hole 13 of the shaft 12. Thus, the shaft 12 of the inner handle unit 9 is separated from the shaft 8 of the outer handle unit 4 and can be independently rotated. Then, when the operation handle 23 of the inner handle unit 9 is rotated with respect to the fixed base 25, the stopper member 14 is detached from the metal receiving member 16 on the fixed frame 1 side. As a result, the door 2 is unlocked, so that the person trapped can open the door 1 from the inside and escape on its own.

[0007]

In the illustrated embodiment, the front end of the shaft 8 of the outer handle unit 4 is fitted into the base shaft 22a of the operating handle 22, and the diametrical connecting pin 2
Are interconnected by one. Connecting tube 7 is shaft 8
Diametrically connecting pin 21
Are interconnected by Reinforcing rings 20 are fitted to the front and rear ends of the shaft 8, and both ends of the connecting pin 21 also penetrate the reinforcing ring 20. The shaft 8 is fitted into a sheath tube 3 that penetrates the door 1 in and out, and the sheath tube 3 is fitted and fixed to front and rear ends of a fixed pedestal 24 of the outer handle unit 4 and a fixed pedestal 25 of the inner handle unit 9. ing.

A support pedestal 18 of a stopper member 14 is fixed to the inner surface side of the door 2, and a roller 15 for engaging a receiving member 16 is provided at one end of the stopper member 14. . The other end of the stopper member 14 is provided with an interlocking rod 17.
The interlocking rod 17 is driven up and down by the rotation of the shaft 12, another catch member attached to the interlocking rod 17 engages with another receiving member, and the door 2 The door 2 is fixed at a plurality of places according to the size.
Lock against

The spring member 19 is formed of a compression coil spring, and is compressed between the shaft hole bottom surface 12a of the shaft 12 and the annular shoulder 11c of the lock shaft 11. A flat knob 10 is provided at the rear end of the lock shaft 11. The small diameter portion 11b of the lock shaft 11 is formed continuously with the front end portion 12a via the tapered portion 11d. Therefore, when the lock shaft 11 once retracted is advanced by the action of the spring member 19, the hard ball 5 is pushed up by the tapered portion 11d, and is smoothly guided to the front end portion 12a. Three through-holes 6 of the connecting cylinder 7 are provided at intervals of 120 degrees, and the inner and outer shafts 8, 12 are interconnected by three hard balls 5.

[0010]

According to the lock handle device of the present invention configured as described above, the stopper member 14 is connected to the shaft 12 of the inner handle unit 9 and the lock shaft 1
The hard ball 5 fitted in the through hole 6 of the connecting cylinder 7 moves in the centripetal direction by retreating 1, whereby the shaft 12 of the inner handle unit 9 is separated from the shaft 8 of the outer handle unit 4 to rotate independently. Since the shaft 8 of the outer handle unit 4 is in a non-rotatable state due to some cause, a person trapped inside can unlock himself from the inside and escape by himself.

[Brief description of the drawings]

FIG. 1 is a front view of a lock handle device with an inside emergency release function according to an embodiment of the present invention in a locked state from the door inner surface side.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG. 2;

FIG. 4 is a longitudinal sectional view of a main part showing a state where a lock shaft is pulled backward as a pre-operation for unlocking from the inside.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fixed frame body of a shelter 2 Door of a shelter 3 Sheath tube 4 Outer handle unit 5 Hard ball 6 Through-hole of a connection tube 7 Connection tube 8 Outer handle unit shaft 9 Outer handle unit 10 Lock knob 11 Lock shaft 11a Lock shaft 11b Small diameter part of lock shaft 12 Shaft of inner handle unit 13 Shaft receiving hole of connecting cylinder 13a Hard groove receiving groove 14 Stopper member 15 Stopper roller 16 Stopper member 17 Interlocking rod 18 Stopper member Support pedestal 19 spring member 20 reinforcing ring 21 connecting pin 22 operating handle 23 operating handle 24 fixed pedestal 25 fixed pedestal

Claims (1)

(57) [Claims] 1. An outer handle unit 4 mounted on the outside of the door 2, an inner handle unit 9 mounted on the inside of the door 2, and coaxially fixed to a rear end of a shaft 8 of the outer handle unit 4. Connecting shaft 7 of inner handle unit 9 and coaxial shaft 12 of inner handle unit 9 having coaxially provided receiving hole 13 at the front end, in which connecting tube 7 is provided with radial through hole 6, and receiving hole 13 into which connecting tube 7 is fitted. A lock shaft 11 fitted coaxially with the cylinder 7 and movable in the front-rear direction and having a small-diameter portion 11b at a front end 11a inserted into the connection cylinder 7, and a spring for urging the lock shaft 11 to move in the forward direction. When the member 19 is fitted into the through-hole 6 of the connecting cylinder 7 and comes into contact with the peripheral surface of the front end 11 a of the lock shaft 11, a part thereof engages with the receiving groove 13 a on the inner surface of the receiving hole 13 while the lock Small diameter part 11 of shaft 11 A lock handle device with an internal emergency release function, comprising a hard sphere 5 that partially escapes from the receiving groove 13a when coming into contact with the peripheral surface of the inner handle unit b.