JPH1025941A - Door locking device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to lock a door to a fixed frame at both up and down ends. SOLUTION: A locking device of a door 1 opened and closed to a fixed frame 2 is constituted of a turning handle mounted to the outside surface of the door 1, a turning cam member 4 mounted to the end in a turning shaft of the handle on the inside surface of the door 1 and a locking member 6 mounted to the inside surface of the door 1. The locking member 6 is equipped with a turnable shaft 23 extended to the vertical direction of the door, a cam follower 29 extended outward in the direction of the diameter from a required site between both up and down ends of the shaft 23 and interlocking arms 31 and 32 extended outward in the direction of the diameter from both up and down ends of the shaft 23. Then, when the cam member is turned, the cam follower 29 coming into contact therewith is moved, the shaft 23 is turned with the movement thereof, and the interlocking arms 31 and 32 are detachable to a required site of the fixed frame 2 from the horizontal direction.

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 handle mounted on an outer surface of a door that opens and closes with respect to a fixed frame, the handle being capable of repeating rotation within a required angle range, and a handle for the door. A cam member attached to an inner end of the handle located on the inner surface side, the cam member being repeatedly rotated in a plane parallel to the door with the rotation of the handle; and the cam member attached to the inner surface of the door. A locking member having a cam follower engaged with the locking member, the locking member being rotatable around an axis extending in the vertical direction in parallel with the door, and upper and lower ends of the shaft portion. The cam follower formed so as to extend radially outward from a required portion between the portions, and the cam follower formed so as to extend radially outward from upper and lower ends of the shaft portion to engage and disengage with a required portion of the fixed frame. Lock and unlock doors Lying in the door locking device, characterized in having engaging means capable of a.

[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. The locking device is
A flat handle 3 fixed to the front 1A of the door 1, a claw 4 attached to the inner end of the handle 3 on the back side of the door 1, and a locking member 6 attached to the back 1B of the door 1.
The fixed frame 2 has a columnar engaging member 7 above and below.

The flat handle 3 has a frame member 11 fixed to the door 1 and a grip portion 12 which can be raised and lowered with respect to the frame member 11. When the grip portion 12 stands, the grip portion 12 rotates (turns) about a rotation axis (not shown) in the counterclockwise and clockwise directions indicated by arrows Y ₁ and Y ₂ within a range of about 90 °. Can be repeated. The rotation axis of the grip portion 12 extends to the rear side of the door 1, and a plate-shaped claw fitting 4 is fixed to a distal end portion thereof. As the handle 3 rotates, the claw fitting 4 is parallel to the door 1. Rotate in the plane.

The claw fitting 4 has a cam groove 17 bent or curved in a substantially U-shape, and an engaging portion 19 engaged with and disengaged from an engaging hole 18 of the fixed frame 2. The cam groove 17 has a first side wall 21 and a second side wall 22 extending in a U-shape in parallel with each other,
The first side wall 21 is located inside the square, and the second side wall 22 is located outside the square. When the handle 12 rotates, the cam groove 17 draws a required trajectory around the rotation axis, while the engaging portion 19 moves in and out of the engaging hole 18.

The locking member 6 has a shaft 23 extending in the vertical direction parallel to the door 1, and the shaft 23 is rotatably supported by support members 26, 27, 28 on the inner surface of the door 1. . The shaft portion 23 has a round bar-shaped cam follower 29 extending radially outward at the center in the vertical direction, and engaging arms 31 and 32 extending radially outward at both upper and lower ends. When the hook 4 rotates counterclockwise with the handle 12 in the illustrated state in the counterclockwise direction Y ₁ , the first side wall 21 of the cam groove presses the cam follower 29, and the shaft 23 is moved in a horizontal plane orthogonal to the door 1. Rotate (turn) in the Z direction to the center. With this rotation, the shaft portion 23 rotates, and the engagement arms 31 and 32
(Zoom) in the Z direction around. In the state of FIG.
The engagement arms 31 and 32 are engaged with the upper and lower engagement members 7 of the fixed frame 2 so that the door 1 is locked at both upper and lower ends, and the engagement arms 31 and 32 are turned 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 cam member 13 rotates accordingly, the engagement between the engaging portion 19 and the engaging arms 31 and 32 in the locking device is fixed. The engagement with the frame 2 is released, and the door 1 is unlocked. When the handle 12 when the door 1 is closed is rotated clockwise Y _2, the engaging portion 19 and the engaging arm 31 is engaged with the fixed frame 2, the door 1, in addition to the upper and lower ends, The central portion is also locked.

[0012]

The door locking device according to the present invention is a member (engaging arm) for locking both upper and lower ends of the door.
However, unlike a device in which the locking member moves up and down as in the related art, the door is locked at both upper and lower ends even when the length of the fixed frame is the same as the door, because the device rotates (turns) in a horizontal plane. It becomes possible.

[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 6 Locking member 12 Handle 13 Cam member (claw fitting) 23 Shaft part 29 Cam follower 31, 32 Engaging means

Claims (2)

[Claims] 1. A handle attached to an outer surface of a door that opens and closes with respect to a fixed frame, the handle being capable of repeating rotation within a required angle range, and being attached to an inner end of the handle located on the inner surface side of the door. A locking device includes a cam member that repeats rotation in a plane parallel to the door with rotation of the handle, and a locking member that is attached to the inner surface of the door and includes a cam follower that engages with the cam member. The locking member is formed so that the locking member is rotatable around an axis extending in the vertical direction in parallel with the door, and extends radially outward from a required portion between the upper and lower ends of the shaft. Engaged with the cam follower formed so as to extend radially outward from both upper and lower ends of the shaft portion and capable of engaging and disengaging a required portion of the fixed frame to lock and unlock the door. And means. That door locking device. 2. The door locking device according to claim 1, wherein the cam member also serves as an engaging member that can be engaged with and disengaged from a required portion of the fixed frame.