JPH0213675A - Locking mechanism for electrically driven rain door - Google Patents

Abstract

PURPOSE:To contrive to simplify lock release by forming those such as a release pin provided vertically in parallel with a shaft, and a long and slender through hole engaged with a guide pin in the longer direction, which is pat across a lifting wire fixed onto one end of said release pin. CONSTITUTION:A device is equipped with those such as a lock bar 7 movable with a door panel 3, a detector which is mounted on the frame side of a rain door to detect that the door panel is completely closed, and with a solenoid which has a shaft 16 extending to the vertical direction and allows the shaft 16 to be engaged with the lock bar while being interlocked with the signal from the detector. And the device is formed with a release pin 22 which extends vertically long and slenderly in parallel with the shaft 16, a lifting wire 23 fixed onto one end of the pin, a guide pin 18 which is put across between the shaft 16 and the release pin 22, and with a long and slender through hole bored in the longer direction of the release pin 22. This constitution allows the device to have a function of manually releasing the automatic lock, thereby enabling the lock to be released in a simple manner.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a locking mechanism for an electric storm door.

(Prior art) Conventional electric storm doors close the door panels by successively pulling out the number of door panels stored in the door pocket onto the rail for running the door panels using a drive mechanism including a drive motor, etc. At this time, it is common to stop the motor and lock the door plate at the same time as the door plate is completely closed.Typically, a lock bar is provided on the door plate on the movable side, and a lock bar is provided on the door plate on the fixed side. A locking mechanism consisting of a solenoid is installed on a suitable pillar near the door.The solenoid has a movable part that moves in conjunction with the complete closing of the door plate.
A shaft connected to II 81≦ engages with this lock bar to lock the door plate. During operation of this solenoid, the movable part of the solenoid contacts a microswitch, thereby stopping the motor.

To release this locking mechanism, a switch for opening the storm door is pressed, which activates a solenoid to remove the shaft from the lock bar and activates a motor to move the door plate.

(Problem to be solved by the invention) As described above, conventional electric storm doors are equipped with a mechanism that automatically locks the door plate, but they are extremely inconvenient because they do not have a safety device in case the mechanism malfunctions. there were. For example, if an abnormality occurs in the operation of the solenoid and the shaft remains engaged with the lock bar and does not move, the door panel cannot be opened unless the lock bar is removed or the solenoid is removed. Additionally, if a force is exerted to open the door from the outside while the door is locked, the lock bar attached to the door will be strongly wedged into the shaft that moves up and down by the solenoid inside the door pocket. Therefore, in such a situation, even if an attempt is made to automatically open the storm door, the shaft will not move up and down and will not be unlocked due to the strong force embedded in the shaft.

The present invention was made to solve this problem, and it is an object of the present invention to provide a locking mechanism that can easily release the locked state in the event of a failure.

(Means for Solving the Problems) In order to achieve the objective (1), the present invention includes a lock bar that is attached to the door plate side and movable together with the door plate, and a lock bar that is attached to the storm door frame side and detects the completely closed state of the door plate. With the vessel.”
1. A locking mechanism for an electric storm door comprising a vertically movable shaft extending vertically and a solenoid that engages the shaft with the lock bar in response to a detection signal from the detector, in which the locking mechanism is parallel to the shaft. a release pin provided to extend thinly in the vertical direction; a pulling wire attached to one end of the release pin; a guide pin stretched between the shaft and the release pin; The guide pin has one end fixed to the shaft and the other end extending horizontally and loosely fitting into the through hole, and the guide pin has a vertical position of the through hole and a The length is approximately equal to the movable range of the other end of the guide pin that moves with the vertical movement of the shaft, a roller is provided at the tip of the shaft, and the lock bar is height adjustable. It is characterized by being tapered inward from its upper end.

(Function) In the locking mechanism, if the solenoid operates normally and the shaft moves up and down normally, the guide pin moves up and down in the through hole of the IJ-Spin in the same way as the shaft moves. Move. Since one end of the guide pin is loosely fitted into the through hole, movement of the shaft will not cause the release pin to move. On the other hand, if the solenoid malfunctions and the shaft remains engaged with the lock bar, the wire must be pulled up manually. This lifts the release pin.

Then, the guide pin fitted into the through hole of the IJ spin is also lifted up. As a result, the shaft of the solenoid also moves upward and is disengaged from the mouth bar. Since the roller at the tip of the shaft rolls along the outer surface of the lock bar, the shaft always moves smoothly up and down even when the lock bar is pressed against the shaft by an external force. When the shaft remains lowered due to a solenoid failure, etc., the roller surface of the shaft lifts up along the tapered surface, climbs over the upper end of the lock bar, falls to the outer surface of the lock bar, and is firmly engaged with the outer surface there. do.

(Example) FIG. 1 shows a door pocket 1 and a frame 2 constituting a door plate groove, in which four door plates 3 are arranged. As shown in FIG. 2, each door panel 3 is composed of a thin panel 4 and a frame 5 surrounding it. Also, the back side of door plate 3,
That is, a reinforcing crosspiece 6 (shown by imaginary lines in FIG. 2) is provided on the indoor side. A lock bar 7 is attached to the frame on the rear side of the last door plate among the four door plates when it is sent out from the door bag 1. A tapered surface 7A is formed inward from the upper end of this lock bar. One end of this lock bar 7 projects laterally from the door frame toward the indoor side. Also, a magnet is attached to the crosspiece 6. Furthermore, as shown in FIG. 1, a magnet 8b is also attached to the door plate located at the rearmost position when the door plate is stored in the door pocket.

On the back side of the door panel, that is, on the indoor side, there is a pillar 9 of the house, and a metal plate 10 is fixed to this pillar. , -4 metal plate 1
Two reed switches 11a and llb are attached to one corner of 0 at different mounting positions, one above the other.

These reed switches lla and llb are, respectively,
It is provided at the same height as the magnets 8a', 8b, and when the last door plate passes in front of the pillar 9, either when sending out the door plate or storing the door plate. , magnet) 8a or 8t) respectively.

A solenoid bracket 12 is attached to the metal plate 10, and a solenoid box 13 and a bearing 14 are fixed to the upper and lower ends of the bracket 12, respectively. A coil 15 is disposed inside the solenoid box 13, and an upper end portion of a shaft 16 is disposed so as to be surrounded by the coil 15. The shaft 16 extends vertically through the bearing 14, and its lower end portion extends further downward from the bracket 12. A roller 17 is attached to the lower end of this shaft 16. This roller 17
serves to reduce friction with the lock bar 7. The two input terminals of the solenoid box 13 are connected to the output terminals of reed switches lla and llb and the output terminal of a door plate opening/closing switch (not shown), respectively. As a result, the operation of the solenoid is linked to the door plate opening/closing switch and the reed switch.

Further, a lateral hole is provided in the middle of the shaft 16, and a guide pin 18 is fixed so as to extend laterally, that is, horizontally, with respect to the shaft 16 through this lateral hole. A spring 19 is fitted around the shaft 16 between the lower surface of the solenoid box 13 and the guide pin 18. A microswitch 20 is attached to the outer surface of the bracket 12, and the contact point of the microswitch 20 comes into contact with the guide pin 18. The output terminal of the microswitch 20 is connected to the input terminal of the motor.

A release pin bracket 21 is attached adjacent to the solenoid bracket 12. A release pin 22 extends vertically and substantially parallel to the shaft 16. A wire 23 is attached to the upper end of this release pin. The wire 23 extends upward through a hole in a holder 24 fixed to the upper edge of the metal plate 10. A spring 25 is fitted between the lower surface of the holder and the upper end of the release pin. Release pin bracket 21
An elongated hole 26 is provided in the vertical direction. The release pin 22 is also provided with a vertical hole having the same shape as this hole. The other ends of the guide pins 18 are loosely fitted into these holes and can freely move up and down within the holes. The positions and lengths of these holes are designed to approximately correspond to the range of movement of the guide pin 18, which moves upward integrally with the shaft 16.

Next, the operation of the locking mechanism of the present invention will be explained.

1st: In the condition shown in Figure 3, the solenoid switch 7)
16 is at the lowest position. At this time, this shaft 7l-16
engages with the locking member 7 to prevent the door plate from being pulled back toward the door compartment. As a result of this step 3, the door plate is kept in a completely locked state.

11 in a lock state, the solenoid is deenergized, and 7)
+6 is lowered by the elastic force of the spring 19 by 1[7]. At this time, one end of the guide pin 18 is in contact with a contact point of the microphone T-1 switch 20, so that the motor (not shown) is in a non-operating state, that is, stopped. The other end of the guide pin 18 is located at the lowest end of the hole 26 of the release pin bracket 21, and therefore also located at the lowest end of the vertical hole of the IJ spin 22.

In this state, when the door opening/closing switch is switched in the direction of opening the door, the solenoid is activated and the shaft 16 is pulled upward against the force of the spring.

At this time, the roller 17 rises while rolling along the outer surface of the locking member 7.

As a result, the shaft is disengaged from the locking member, so that the locked state is released. At the same time, the guide pin 18 is also pulled away together with the shaft 16, so that one end of the guide pin 18 and the microswitch 20 are disconnected from each other, and the motor is put into operation. As a result, the door plate 3 is sent toward the door pocket 1 1llfi next time.

At this time, the other end of the guide pin 18 also moves in the L direction from the lowest end position of both the release pin hole and the release pin bracket hole to the "first" end position without any obstruction.

Therefore, the release pin 22 is held in a downwardly pressed state by the force of the spring 25, as shown in FIG.

When the door plate is completely stored in the door bag and the door plate is in the open state, the reed switch Ilb is set to the magnetic position.
In response to the previous passage of b, the solenoid is turned on and the solenoid is deenergized. Therefore, the shaft 16 is pushed down by the force of the spring 19, returning to the state shown in FIG.

At this time, the other end of the guide pin 18 is connected to the release pin 22.
The IJ-IJ-spin 22 remains as it is by simply moving it through the hole in the release pin bracket 21.

When closing the door plate, the door plate opening/closing switch is switched in the direction of closing the door plate. Then, the solenoid is activated and the shaft 16 is pulled upward against the force of the spring. This causes one end of the guide pin 18 to come out of contact with the microswitch 20, so that the motor starts operating and the door plate is sent out from the door pocket. At this time, as in the case described above, the other end of the guide pin simply moves upward from the lowest end position to the highest end position of both the hole of the release pin and the hole of the release pin bracket. has no effect on the movement of this guide pin.

When all the door plates have been sent out of the door pocket and the door plates are in a completely closed state, the reed switch lla is turned on in response to the immediate passage of the magnet 8a, thereby deenergizing the solenoid. Therefore shaft 1
6 is pushed down by the force of the spring 19, returning to the state shown in FIG. That is, the shaft 16 and the locking member 7 are engaged with each other, resulting in a completely locked state. At this time, the other end of the guide pin 18 simply moves within the holes of the release pin 22 and release pin bracket 21.
The release pin 22 is held at the same position without applying any force to the guide pin 18.

As described above, the release pin does not act on the guide pin at all when the solenoid is operating normally.

However, if the solenoid fails and the shaft remains in the downward position and becomes inoperable, that is, if the locked state cannot be released, this can be released by pulling the release pin upward.

That is, when such a failure occurs, when the wire is manually pulled up, the release pin 22 is similarly pulled upward against the force of the spring 25. Since one end of the guide pin 18 is located at the lowest end of the vertical hole of the release pin 22, it is immediately lifted upward in response to the movement of the release pin. Since the other end of the guide pin is fixed to the shaft 16 as described above, the shaft 16 also moves upward together with this guide pin. Therefore, the shaft 16 is disengaged from the lock bar 7 and the locked state is released.

As the guide pin 18 moves to one side, the guide pin 18 and the microswitch 20 come out of contact, the motor is activated, and the door plate 3 is sequentially fed into the door pocket 1. Thereafter, when all the door plates are stored in the door pocket, the wire is released, and the release pin 22 is pushed down by the force of the spring 25, returning to the state shown in FIG. 3.

In addition, even if the solenoid fails and the shaft remains in the downward position and becomes inoperable when the door plate is open, the lock can be locked by providing a tapered surface on the locker. can.

That is, in such a case, since the lock bar 7 is in the door compartment, the shaft 16 will protrude 1- into the movement path in front of the lock bar when closing the door plate.

Therefore, when the shaft 16 passes in front of the lock bar 7 (O-lock mechanism), the shaft 16 comes into contact with the inside of the lock bar.A tapered surface is formed on the inside of the lock bar, so the roller at the tip of the shaft touches the inside of the lock bar. As it moves, it is pushed up while rolling along its tapered surface.The shaft then falls over the upper end of the lock bar and falls to the outside of the lock bar, and the rollers of the shaft engage with the outer surface of the lock bar.This engaged state To release the lock, the shaft can be lifted by manually pulling out the wire, as described above.

(Effects of the Invention) The locking mechanism of the present invention has a function that allows automatic unlocking by manual operation, so even if the door plate is completely closed due to a failure in the locking device, there is no need to recover from the failure. - Can be easily unlocked from time to time. Therefore, it is extremely effective when a situation occurs that requires emergency evacuation outside.

Further, in the locking mechanism of the present invention, since the roller is provided at the tip of the shaft, the friction between the shaft and the lock bar is always small. Therefore, even if an unreasonable external force is applied to the door plate and the lock bar is strongly pressed against the shaft when attempting to open the door plate in a locked state, the shaft will not become wedged in the lock bar. Furthermore, by tapering the lock bar, even when the shaft remains lowered due to a solenoid failure, the roller surface of the shaft is lifted up along the tapered surface and passes over the top end of the lock bar, allowing it to reach the outer surface of the lock bar. By engaging with
It can be completely locked.

[Brief explanation of the drawing]

FIG. 1 is a schematic plan view of an electric storm door equipped with the locking mechanism of the present invention, FIG. 2 is an enlarged perspective view of the door panel shown in FIG. 1, and FIG. 3 is a schematic perspective view showing the locking mechanism of the present invention. be. l...Door bag, 2...Door plate groove frame, 3...
...Door board, 4...Panel board, 5...
... Frame, 6... Crosspiece, 7-- Lock bar, 8a, 8b... Magnet, 9... Pillar, 10... Metal plate, 11
a,llb...Reed switch, 12...Solenoid bracket, 13...Solenoid box, 14...Bearing, 15...
... Coil, 16 ... Shaft, 17.
...Roller, 18...Guide pin, 19
．． 25... Spring, 20... Micro switch, 21... Release pin bracket, 22... Release pin, 23... Wire, 24... Wire holder, 26... ···hole. Figure 1 Figure 2 '7A 8a

Claims (1)

[Claims] A lock bar attached to the door plate side and movable together with the door plate, a detector attached to the storm door frame side to detect the fully closed state of the door plate, and a shaft extending vertically that is movable up and down, and detecting from the detector. A locking mechanism for an electric storm door comprising a solenoid that engages the shaft with the lock bar in response to a signal, a release pin provided to extend vertically in parallel with the shaft, and a release pin at one end of the release pin. It consists of an attached pulling wire, a guide pin that is stretched between the shaft and the release pin, and a through hole that is elongated in the longitudinal axis direction of the release pin, and one end of the guide pin is connected to the shaft. The other end of the guide pin extends horizontally and is loosely fitted into the through hole, and the vertical position and length of the through hole is determined by the other end of the guide pin that moves with the vertical movement of the shaft. The movable range is approximately equal to the movable range, a roller is provided at the tip of the shaft, and the height of the lock bar is adjustable and tapers inward from the upper end. Locking mechanism for shutters.