JP3188193B2 - Door locking device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door locking device capable of locking a door to a fixed frame at both upper and lower ends thereof.

[0002]

2. Description of the Related Art A door locking device disclosed in Japanese Utility Model Laid-Open Publication No. 4-113636 is equipped with a rotatable handle mounted on the outer surface of a door and an inner end of the handle on the inner surface side of the door. It comprises a claw fitting and a pair of upper and lower locking rod members attached to the claw fitting and extending above and below the door. When the handle rotates in a required direction, the claw fitting also rotates, and each of the upper and lower rod members crosses over the upper and lower ends of the door to engage with a required portion of the fixed frame, and the door is locked. When the handle is turned in the opposite direction, the rod member is detached from the engagement portion, and the door is unlocked. According to this locking device, even when the door is relatively long vertically, the upper and lower ends engage with the fixed frame, so that the door and the fixed frame are engaged at only one place. The degree of close contact of the part with the fixed frame is improved. Also,
When a force for opening the door in the locked state is forcibly applied, the force is dispersed to the upper and lower engagement portions, so that the locking device is less likely to be damaged.

[0003]

In the known locking device, since the upper and lower rod members respectively engage with the fixed frame beyond the upper and lower ends of the door, the vertical dimension of the fixed frame is smaller than that of the door. Otherwise, it is difficult to use this device.

Accordingly, an object of the present invention is to make it possible to engage both upper and lower ends of the door with the fixed frame even when the door and the fixed frame have the same vertical dimension.

[0005]

According to the present invention, there is provided a rotatable handle mounted on an outer surface of an intermediate portion in a vertical direction of a door which opens and closes with respect to a fixed frame,
The handle is attached to an inner end of a rotation shaft of the handle located on the inner surface side of the door, and is turned in a plane parallel to the door together with the rotation of the handle to be disengaged from a vertical intermediate portion of the fixed frame. A first locking means having a plate-shaped intermediate locking member to be engaged and disengaged from upper and lower ends of the fixed frame in conjunction with rotation of the intermediate locking member attached to an inner surface of the door. in the door locking device is constituted by a second locking means, before the first locking means is definitive in the middle part engaging member
The fixed position is located between the rotating shaft and the fixed frame.
With respect to the locking portion engaging and disengaging the intermediate portion of the frame and the rotation axis.
A cam groove located at a portion opposite to the fixed frame , wherein the second locking means is supported in parallel with the door, extends near the upper and lower ends of the door, and extends around an extending axis thereof. A rotatable shaft member, a cam follower integrally provided at a vertical intermediate portion of the shaft member, extending radially outward of the shaft member and engaging with the cam groove, and upper and lower ends of the shaft member Upper and lower locking members, which are integrally provided in the vicinity and extend radially outward of the shaft member and rotate about the shaft member in the horizontal direction of the door; And upper and lower locked members, each of which is provided in an up-down direction and is respectively engaged with and disengaged from the upper and lower locking members.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the locking device according to the present invention will be described below with reference to the accompanying drawings.

FIGS. 1 and 2 are a front perspective view and a rear perspective view of a door 1 to which a locking device is attached. Although not shown, the door 1 is attached to the fixed frame 2 via a hinge, and can be opened in the arrow X direction. Front 1 of door 1
A known flat handle device 3 is fixed to A, and a plate-like intermediate locking member (claw fitting) 4 as a first locking means is located on the back side of the door 1, and the back surface of the door 1. In FIG. 1B, a second locking means 6 described later, which is interlocked with the intermediate locking member 4, is located.

The flat handle device 3 has a frame member 11 fixed to the door 1 and a handle 12 capable of standing up and down with respect to the frame member 11. When the handle 12 stands up, the handle 12 moves about 90 ° in a counterclockwise direction and a clockwise direction indicated by arrows Y1 and Y2 around a rotation shaft (not shown) located in the cylindrical shaft support portion 12A. Can be rotated in the range of. The rotation shaft of the handle 12 extends to the rear side of the door 1, and an intermediate locking member 4 is integrally fixed to a distal end portion thereof. The intermediate portion locking member 4 rotates the door 1 by rotating the handle 3.
Rotate in a plane parallel to.

The intermediate locking member 4 has a cam groove 17 bent in a substantially U shape, and a locking portion 19 which engages with a locking hole 18 of the fixed frame 2. The cam groove 17 has a first side edge 21 and a second side edge 22 that extend in a U-shape in parallel with each other, and the second side edge 22 has a U-shape inside the first side edge 21. It is located outside. Handle 1 by operator's operation
When 2 rotates about the rotation axis, the cam groove 17 draws a required trajectory around the rotation axis, while the locking portion 19 enters and retracts with respect to the locking hole 18.

The second locking means 6 is a column-shaped upper and lower locked member 7 integrally provided at the upper and lower ends of the fixed frame 2 and extending in the vertical direction, and near the upper and lower ends of the door 1 in parallel with the door 1. Support members 26, 27, 28 extending to the inner surface of the door 1
A shaft member 23 rotatably supported around its extending axis, and a round bar-shaped cam follower extending radially outward and engaging with the cam groove 17 near the vertical center of the shaft member 23. 29, and upper and lower locking members 31, 32 extending radially outward near the upper and lower ends of the door 1, respectively. When the intermediate locking member 4 rotates in the counterclockwise direction Y1 together with the handle 12 in the illustrated state, the first side edge 21 of the cam groove 17 presses the cam follower 29, and the cam follower 29 is moved in a horizontal plane orthogonal to the door 1. To rotate the shaft member 23 in the Z direction. With this rotation, the shaft member 23 rotates, and the upper and lower locking members 31 and 32 move around the shaft member 23 in the Z direction.
Rotate in the direction. In the state shown in FIG.
1 and 32 are engaged with the upper and lower locked members 7 of the fixed frame 2 and the door 1 is locked at the upper and lower ends thereof, and the upper and lower locking members 31 and 32 are rotated in the Z direction. To release the engagement.

As described above, when the handle 12 in the state shown in FIGS. 1 and 2 rotates and the intermediate locking member 4 rotates, the fixed frame 2 between the locking portion 19 and the upper and lower locking members 31 and 32 is rotated. And the door 1 is unlocked. When the handle 12 rotates clockwise Y2 when the door 1 is closed, the locking portion 19 of the intermediate locking member 4 and the upper and lower locking members 31, 32 engage with the fixed frame 2, and the door 1 is closed. Is locked at the center in addition to the upper and lower ends.

[0012]

In the door locking device according to the present invention, the upper and lower locking members for locking the upper and lower ends of the door are rotated in a horizontal plane, so that the upper and lower locking members are different from the prior art. Unlike the case where the stop member moves up and down, even when the length of the fixed frame is the same as the length of the door, the door can be locked at the upper and lower ends.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front perspective view of a door locking device in a use state.

FIG. 2 is a partially cutaway rear view of the apparatus of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Door 2 Fixed frame 4 Intermediate part locking member 6 Second locking means 7 Upper and lower locked members 12 Handle 17 Cam groove 23 Shaft member 26, 27, 28 Supporting member 29 Cam follower 31, 32 Upper and lower locking member

Claims (2)

(57) [Claims] 1. A rotatable handle attached to an outer surface of a vertically intermediate portion of a door that opens and closes with respect to a fixed frame, and a rotatable shaft of the handle located on an inner surface side of the door. A first plate-shaped intermediate locking member attached to an inner end portion, which is rotated in a plane parallel to the door with the rotation of the handle, and is engaged with and disengaged from a vertically intermediate portion of the fixed frame; A door comprising: locking means; and second locking means attached to an inner surface of the door and respectively engaged with and disengaged from upper and lower ends of the fixed frame in conjunction with rotation of the intermediate locking member. in the locking device, the times that the first locking means is definitive in the middle part engaging member
The fixed frame is located at a position between the moving shaft and the fixed frame.
The fixed portion is fixed with respect to the locking portion that is
Has a cam groove located on the opposite side of the fixed frame ,
The second locking means extends near the upper and lower ends of the door and is rotatable around an axis extending therefrom. The second locking means is provided integrally at a vertically intermediate portion of the shaft member. A cam follower extending radially outward to engage with the cam groove; and a cam follower integrally provided near upper and lower ends of the shaft member and extending radially outwardly of the shaft member and the door centering on the shaft member. Upper and lower locking members that are integrally provided at the upper and lower ends of the fixed frame, respectively, and that extend in the vertical direction and that the upper and lower locking members respectively engage and disengage. And a door locking device. 2. The method according to claim 1, wherein the handle is upright with respect to the door surface.
2. The door locking device according to claim 1, wherein the door locking device is capable of falling down.