JPH08240056A - Automatic locking and unlocking device for trap door - Google Patents

Abstract

PURPOSE: To easily lock and unlock a door automatically by laying a turning plate on a shaft fixed to a door post, and forming two notches for coupling a stopper shaft to the plate on the operation of a spring at the time of opening or closing a door. CONSTITUTION: A shaft 3 is fixed to the base of a V-shaped support arm 2 connected to a door, and coupled to the upper section of a door post 4. Also, a sector type or circular turning plate 3 for locking the door is made to gear with and fixed to the shaft 3. In addition, two notches 16 and 17 are formed on the plate 3, so as to be engaged with a stopper shaft 15 on the operation of a spring at the time of opening or closing the door. When the door is in an open or close state, the shaft 15 is coupled to either the notch 16 or the notch 17, thereby automatically locking the door. Also, the shaft 15 is fitted with a lever for the retreat thereof and made to retreat on the operation of the lever, thereby releasing the shaft from either the notch 16 or the notch 17, and unlocking the door.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic lock and release device for a flip-up door. Specifically, when the flip-up door reaches the open position and the closed position, it is automatically locked to prevent delusion, but when the operating handle is operated from outside the door, the lock is released remotely and the door is closed. The present invention relates to a device capable of opening and closing.

[0002]

2. Description of the Related Art Conventionally, a flip-up door used in a garage or the like has a screw hole 37 provided near a base portion of a support arm 36 of the door 35 as shown in FIGS. The screw 39 is screwed and the end of the screw 39 is engaged with the two recesses 41 and 42 provided at the door strut 40 at an angle difference of 90 degrees to lock the door 35 in the open or closed state. It is something that is done. Therefore, there is a problem that both the locking and the unlocking have to be done by turning the handle 38 around and the door cannot be unlocked from the outside.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned conventional problems. When the door is opened or closed, the stop shaft cuts the rotating plate by the force of the spring. Locking is done automatically to engage, and when the operation handle attached to the door is operated, the lever removes the stop shaft from the notch in the rotating plate, so the lock can be released from the outside. Provided is an automatic locking and unlocking device for a door.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, an automatic locking and releasing device for a flip-up door according to the present invention is a pivot for inserting a door strut into the bases of supporting arms attached to both sides of the door. Is fixed to the pivot, and a fan-shaped or circular rotary plate is fixed to the pivot, and the rotary plate is provided with two notches in which the stop shaft is engaged by springs when the door is opened and closed. A lever for retracting the stop shaft against the spring is engaged with the receiver attached to the lever, and the operation end of the lever and the operation handle pivotally supported on the door are connected by a flexible wire. It is a thing.

[0005]

The automatic locking and unlocking device for the flip-up door according to the present invention rotates when the flip-up door is closed as shown by the solid line in FIG. 6 and when it is opened as shown by the chain line in FIG. At the same time that the two notches of the plate correspond to the stop shaft, the stop shaft is pressed by the spring and engages with the notch to lock the door, so that the door is locked automatically. When the locked door is opened from the outside, the flexible wire is pulled by operating the operation handle pivotally supported by the door, and the lever retracts the stop shaft against the spring, and the tip of the flexible plate The door can be opened and closed by removing it from the notch and remotely unlocking the door.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an automatic lock and unlock device for a flip-up door according to the present invention will be described below with reference to the drawings.

FIG. 1 is a vertical sectional side view showing a locked state of a door closed by an embodiment of the apparatus according to the present invention, and FIG. 2 is a vertical sectional side view showing a locked state of an opened door by the same embodiment. FIG. 3 is an enlarged plan view showing a door pillar of the above embodiment with the lid removed and across the automatic lock portion. FIG. 4 is an enlarged vertical side view showing an automatic lock portion of the above embodiment, FIG. 5 is an enlarged side view of an operation lever in the same embodiment, and FIG. 6 is a flip-up door for automatically locking and releasing according to the above embodiment. It is a side view.

In FIG. 6, reference numeral 1 denotes a flip-up type door, which is formed in a rectangular shape having a width and height suitable for shielding an entrance / exit, to which a V-shaped support arm 2 is attached, and this support is provided. A pivot 3 is fixed to the base of the arm 2, and this pivot is used as a door strut 4
When the support arm 2 is rotated around the pivot 3, the door 1 is lowered downward as shown by a chain line in FIG. 6 to be closed or is jumped upward as shown by a solid line. Raise and open.

1 to 3, reference numeral 5 indicates a lever, which is fixed to the pivot 3 supported on the upper part of the door support 4 by a key, a pin, or other fixing means (not shown), It is adapted to rotate as the door 1 is opened and closed.

In FIG. 1, reference numeral 6 denotes a spring bearing arranged below the lever 5 so as to correspond to the lever 5. The spring bearing 6 is screwed into a screw 7 installed vertically in the door strut 4 to correct the screw 7. When it is moved up and down by reverse rotation, the elasticity of the spring, which will be described later, can be adjusted to be stronger or weaker.

1 to 3, reference numeral 8 denotes a tension spring, the upper end of which is fixed to the tip of the lever 5 by a pin 9 and the lower end of which is hooked on a hook 10 supported by a spring receiver 6, The lever 5 and the spring bridge 6 are elastically connected, and the elastic force and the weight of the door 1 are placed in a balanced manner so that the door 1 can be opened and closed lightly and safely.

In FIGS. 1 to 3, reference numerals 11 and 12 are stoppers for limiting the range of rotation of the lever 5, one stopper 11 is a position where the lever 5 reaches when the door 1 is opened, and the other stopper 12 is. When the door 1 is closed, the levers 5 are respectively arranged to reach the positions, and the levers 5 which rotate as the door 1 is opened and closed are stopped to limit the opening / closing range of the door 1.

In FIGS. 1 to 4, reference numeral 13 denotes a rotating plate for locking the door 1, which is a fan shape of about 1/3 of a circle, or a circular one if it can be accommodated in a door strut. It is used for fixing to the pivot 4 side by side with the lever 5, and when the door 1 is opened or closed on its peripheral surface, two notches 16 and 17 for engaging the stop shaft 15 pressed by the spring 14 shown in FIG. By providing the door 1, when the door 1 is opened or closed,
The stop shaft 15 is engaged with the notches 16 or 17 by the action of the spring 14 to automatically lock the door 1 for stopping the movement of the door 1.

In FIG. 4, reference numeral 18 denotes a lever for retreating the stop shaft 15, which is formed by bending a sheet metal into a U shape so that the stop shaft 15 is sandwiched by both side walls, and the middle thereof is the stop shaft. A shaft 20 is attached to a support frame 19 of 15, and an operating end a is engaged with a receiving body 21 attached to the stop shaft 15, and an operating end b.
When a flexible wire, which will be described later, is connected and the operating end b is pulled by this, the receiving body 21 is pushed by the operating end a to retract the stop shaft 15 and remove it from the notch 16 or 17.

In FIG. 5, reference numeral 22 denotes an operation handle of the stop shaft 15, which is formed into a hook-shaped side surface, and the hook tip portion is fixed to the vertical edge of the door 1 at a height that is easy to operate. The shaft 24 is attached to the member 23, one stop piece 26 of the flexible wire 25 is engaged with the bent portion, and the stop piece 27 at the other end is engaged with the lever 18 as shown in FIG. The operation handle 22 and the lever 18 are connected by a wire 25, and one end of a jacket 28 of the flexible wire 25 is supported by the mounting member 23 as shown in FIG. As shown in FIG.
Further, by mounting a return spring 31 between the stopper 30 and the lever 18, when the operation handle 22 is operated from the outside of the door 1, the flexible wire 25 causes the lever 18 to move.
1 is pulled, and the receiving end 21 of the stop shaft 15 is pushed by the operating end b, and the stop shaft 15 is retracted to cut the tip 1 thereof.
It is removed from 6 or 17.

1 to 4, reference numeral 32 denotes a manual knob attached to the end of the stopper shaft 15 that extends out of the support frame 19. When the stopper shaft 15 is pulled by the handle 32, Since the tip of the door 1 is disengaged from the cut 16 or 17 of the rotary plate 13, the door 1 can be unlocked manually from the inside of the door 1.

2 to 4, reference numerals 33 and 34 denote moisture-proof and dust-proof bellows, which are exposed from the support frame 19 of the stop shaft 15 and the flexible wire 2.
By covering the return spring 31 that is externally mounted on 5
It protects these members from moisture and dust.

[0018]

As described above, the automatic locking and unlocking device for the flip-up door according to the present invention, when the door is opened or closed,
Since the stop shaft engages with the notch of the rotating plate by the force of the spring, the door is automatically locked, and when the operation handle attached to the door is operated, the lever causes the stop shaft to cut the rotating plate. Since the door is unlocked, the door can be unlocked from the outside, which is an excellent effect.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional side view showing a locked state of a closed door according to an embodiment of the device according to the present invention.

FIG. 2 is a vertical sectional side view showing a locked state of the opened door according to the embodiment.

FIG. 3 is an enlarged plan view showing a door strut of the embodiment, with the lid removed, and across the automatic lock portion.

FIG. 4 is an enlarged vertical cross-sectional side view showing the automatic lock portion of the embodiment.

FIG. 5 is an enlarged side view showing an operation lever in the same embodiment.

FIG. 6 is a side view of a flip-up door that automatically locks and unlocks according to the embodiment.

FIG. 7 is a side view showing a flip-up door that employs a conventional lock and release device.

FIG. 8 is a partial vertical sectional front view showing a conventional lock and unlock device.

[Explanation of symbols]

 1 Door 2 Support Arm 3 Axis 4 Door Strut 13 Rotating Plate 14 Spring 15 Stop Shaft 16, 17 Notch 18 Lever 21 Receiver 22 Operation Handle 25 Flexible Wire

Claims (1)

[Claims] 1. A pivot for inserting into a door strut is fixed to the base of support arms attached to both sides of the door, and a fan-shaped or circular rotary plate is fixed to this pivot, and the door is opened to this rotary plate. Two notches are provided to engage the stop shaft by the spring when closing and when closing,
A lever for retracting the stop shaft against the spring is engaged with a receiver attached to the stop shaft, and an operation end of the lever and an operation handle pivotally supported on the door are connected by a flexible wire. Automatic locking and unlocking device for flip-up doors.