JPS5920535Y2 - door closing device - Google Patents

Description

[Detailed description of the invention] This invention is a device that controls locking and unlocking of a door in the closed position by turning on and off electricity.
To provide a novel closing device having a mechanism that allows a door to be manually unlocked from inside and outside the room in the event of a power outage accident or failure of electric circuit components.

Hereinafter, an embodiment of the present invention will be described based on the drawings.A door 1 has a retaining pin 2 protruding from its lower part, and as shown in FIGS. 1 and 2, the door 1 can be lowered from a closed state. When the engagement pin 2 is inserted into the pin hole (not shown) in the floor surface 3, the door 1 is held in the correct closed position. At the same time, the door 1 is grounded to the floor 3, and the periphery of the door 1 except for the lower part comes into contact with the door stop 6 of the door frame 5 via the airtight rubber 7, thus making the entire periphery of the door airtight. To open the door, the door handle 8 is rotated downward by 180 degrees, and the entire door 1 is lifted up a certain amount to be separated from the floor 3, and then opened to the left in FIG.

On the other hand, as shown in FIG. 3, a projecting rod 11 having a T-shaped tip in plan view, consisting of a head 9 and a neck 10, is fixed to the upper part of the door 1 at a location facing the door stop 6. A lock box 12 having an engagement and locking mechanism for this protrusion 11 on the 6 side.
is embedded.

This lock box 12 has a horizontally long hole 14 in the plays 1 to 13 exposed to the outside, and a vertical hole 15 that communicates downward with the horizontally long hole 14.
A pair of bases 17 and 17 each having a T-shaped opening 16 in plan view are fixed to the left and right sides of the lock box 12, sandwiching the back of the vertical hole 15. A frame 18 is placed and fixed on the upper part of the U-shaped mounting, and a pair of claw metals 19 and 19 are provided inside the frame 18 on the left and right sides.

These claw metals 19, 19 have their claw-like tips 20 sandwiching the upper part of the vertical hole 15 and facing into the horizontally elongated hole 14, and their bifurcated bases 21 are attached to pivot on a vertical shaft 22 provided in the frame 18. The vertical shaft 22 is equipped with a helical spring 23, which is wound around the vertical shaft 22, and a spiral spring 23 exerts an inward rotational force that constantly approaches the side claws 19 and 19. .

Reference numeral 24 is a part of the collar that is bent and hangs down from the frame 18 to the front surface in the direction of rotation of the claw 19. The spacing between the two claws 19 and 19 is kept constant.

In addition, inside the lock box 12, a pair of left and right brackets l-25, 2 are mounted on the rear wall 12a of the lock box 12 between the left and right claws 19 and 19.
5 is fixed, a shaft 26 is horizontally suspended between both brackets 25 and 25, and a hook-shaped lock link 27 and a hook-shaped lock release link 28 are juxtaposed on the left and right sides of the shaft 26, respectively. Wrapped helical springs 29a, 29b (
(shown in FIG. 6), both links 27 and 28 are always rotationally biased toward the front side, that is, toward the opening 16, and these rotationally biased links 27 and 28 are attached to the bracket 25. It is held in an upright position by being received by a continuous stopper piece 30.

When both links 27 and 28 are in the upright position, the tip hook portion 28a of the lock release link 28 projects toward the opening 16 side and is located at a higher position than the tip hook portion 27a of the lock link 27 (FIG. 9).

Reference numeral 31 denotes a stopper rod disposed at the back of both links 27 and 28. One end of this stopper rod 31 is connected to a plunger 33 of a solenoid 32, and the stopper rod 31 is connected to a plunger 33 of a solenoid 32, and is moved laterally at the back by following the forward and backward movement of the plunger 33. is slid to.

This stopper rod 31 allows the lock link 27 to move backward against the helical spring 29a, or prevents this backward movement to maintain the lock link 27 in the upright position. 31 has an abutment piece 31 a protruding toward the lock link 27 side, and a groove 34 having a shape that allows the abutment piece 31 a to fit into the top of the lock link 27 is recessed, and the solenoid 32 When the plunger 33 is pulled by energizing, the stopper rod 31 moves to the left against the return spring 35 as shown in FIG.
It reaches the position corresponding to the a-shaped groove 34, and the solenoid 3
As the energization to 2 is cut off and the plunger 33 protrudes, the stopper rod 31 moves to the right by the force of the return spring 35, as shown in FIG.
Therefore, in the former case, as a pressing force acts on the lock link 27, the lock link 27 moves backward with the abutment piece 31a fitting into the groove 34, and in the latter case, although a pressing force acts on the lock link 27, the lock link 27 moves backward. The lock link 27 is the abutment piece 31
It comes into contact with a and prevents backward movement.

Furthermore, a cam 36 is provided on the back of the lock release link 28 to project from the back of the lock release link 28 when the solenoid 32 is not energized, that is, when the stopper rod 31 is moving to the right as shown in FIG. When the lock release link 28 moves backward against the helical spring 29b from the position shown in FIG. The stopper rod 31 is configured to slide to the left with the movement.

That is, the lock release link 28 gives the stopper rod 31 the same movement as when the solenoid 32 is energized.

A long hole 38 is opened in the rear wall 12a of the lock box 12 in the sliding direction of the stopper rod 31, and a guide pin 39 is fixed to the stopper rod 31 through the long hole 38 from outside the lock m12.

Inside the door outer frame 5, there is a door outer frame upper plate 4 at the upper part of the lock box 12.
A support plate 41 is vertically provided from the base plate 4, a boss 42 is rotatably supported on the support plate 41, and a rotating shaft 43 is inserted through the boss 42.

This rotating shaft 43 further passes through the door outer frame 5 in the indoor/outdoor direction, and rotation operation knobs 44, 44 are fixed to the projecting end of the surface thereof.

Furthermore, a split groove 45 perpendicular to the rotating shaft 43 is carved on one end surface of the boss 42, and a pin 46 set on the rotating shaft 43 is fitted into the split groove 45, and the boss 42 is rotated. The upper end of the movable lever 47 is fitted, and as the rotary shaft 43 is rotated by the rotary operation knob 44, the boss 4
2 and the rotation lever 47 are configured to rotate.

Incidentally, in order to rotate the rotary lever 47 together with the boss 42, the boss 42 is provided with a square shaft portion (not shown), and the rotary lever 47 is fitted into this square shaft portion.

Further, a pair of stopper protrusions 48 a and 48 b are bent at the lower edge of the support plate 41 and sandwich a rotary lever 47 .
It is rotatable over the range in contact with b, that is, the solid line posture and the virtual line posture in FIGS. 11 and 12, and
The lower end of this rotary lever 47 is brought into contact with the guide pin 39 described above, and as the rotary lever 47 is rotated from the virtual line position to the solid line position, the guide pin 39 is pressed and the stopper rod 31 is moved. It is made to slide against the return spring 35 from the posture shown in FIG. 5 (that is, the locked posture) to the posture shown in FIG. 8 (that is, the unlocked posture).

Further, as shown in FIG. 12, the support plate 41 is provided with an arc-shaped long hole 49 centered on the axis of the rotating shaft 43.
9, a movable pin 50 provided on the rotation lever 47 is inserted, and a fixed pin 51 is protruded from the support plate 41 at a position opposite to the rotating shaft 43, sandwiching this elongated hole 49. A toggle spring 52 is straddled between .

That is, the trouble spring 52 acts to apply spring pressure in a direction in which the movable pin 50 exceeds the toggle dead center 53, and the position where the rotary lever 47 contacts the stopper protrusion 48a and the stopper The position of contacting the protrusion 48b is alternatively maintained.

Since the present invention is configured in this manner, when the door 1 is closed from the open state and floated above the floor 3, the butt 1 first opens.
1's head 9 begins to enter the horizontal hole 14 on the lock box 12 side,
Along with this plunge, the protruding rod head 9 comes into contact with the tips 20 of the right and left pawls 19, 19, and the respective pawls 19, 19 are pushed outward against the helical spring 23.

At the same time, the protruding rod head 9 comes into contact with the lock release link 28 located between the left and right pawls 19 and 19, and then presses against the lock link 27 while moving it backward.

When the solenoid 32 is energized, the abutment piece 31a is in the position corresponding to the groove 34 as described above, so that the lock link 27 is activated by the helical spring 29 due to the pushing force of the protrusion head 9. Similarly, the lock release link 28 moves backward against the helical spring 29b, thus allowing the protrusion head 9 to enter, so that the protrusion 11 is further removed from the lock box. 12, and when the protruding rod 11 reaches its neck 10 into the lock box 12, the door 1 airtightly presses against the airtight rubber 7 of the door stop 6, and the protruding rod head 9 is removed from the claw bar tip 20, the claw bar tip 20 moves to the back position of the protruding rod head 9, and is impulsively engaged with the prong neck part 10 by the spring force of the helical spring 23, and the claw bar 19. 1
The door 1 is maintained in the closed position by holding the protruding rod head 9 between the two.

Therefore, if the operator of the door 1 senses the impactful engagement sound at this time and rotates the door bundle 8 to lower the door 1, the lever 1
1 is also lowered within the lock box 12, and its protruding rod neck portion 10 is disengaged downward from the pawl 19, 19 and fitted into the vertical hole 15.

At the same time, the protruding rod head 9 engages with the base 17, and the protruding rod 1
1 is prevented from coming off in the horizontal direction, and as the protrusion 11 descends and separates from the lock link 27, the lock link 27 is rotated back to its original position by the force of the helical spring 29a, and this lock is Tip hook portion 27a of link 27
is located directly above the protruding rod head 9 engaged with the base 17, thereby fixing the door 1 in the closed position.

On the other hand, the engagement pin 2 protrudes into the pin hole at the bottom of the door 1 and engages with it.

Conversely, when opening the door 1, the door bundle 8 is rotated to raise the door 1, and the protrusion 11 also rises within the lock box 12, and the protrusion head 9 first engages the lock link 27 from below. The lock link 27 is moved backward by pressing against the tip hook portion 27a, and then the lock link 27 is moved backward by pressing against the lock release link 28, thereby causing the protruding rod neck portion 10 to move from the vertical hole 15 to the horizontally elongated hole 14. Then, as the door 1 is opened, the lever head 9 rotates the claws 19 and 19 outward again, and the puller moves out from inside the lock box 12.

However, when door 1 is closed, solenoid 3
When the electricity to the solenoid 3 is stopped, the door bundle 8 is rotated to raise the door 1, but the solenoid 3
2, the stopper rod 31 returns to the spring 35.
The stopper rod 31 slides due to the force of the abutment piece 31.
In order to cause a positional shift between the groove 34 and the groove 34, even if the protruding rod head 9 presses against the tip hook portion 27a of the lock link 27, the lock link 27 contacts the abutment piece 31a and then Since the movement is blocked, the ram 11 cannot be pulled out to one side.

Therefore, the ram 11 and the door 1 do not rise, and the door 1 remains in the closed position.

As described above, in the present invention, the door 1 can be locked or unlocked by energizing or de-energizing the solenoid 32 while the door 1 is closed.

Furthermore, in a device with such a locking mechanism, if a power outage occurs while the door 1 is open, the stopper rod 31 will come to a position that prevents the lock link 27 from moving backwards for the reason described above. However, since the lock release link 28 is provided in the present invention, the lock link 27 can be unlocked by sliding the stopper rod 31 in conjunction with the door closing operation, regardless of the above-mentioned power outage state. .

That is, as the door 1 is closed from the open state and the protruding rod head 9 enters the opening 16, the tip hook portion 28a of the lock release link 28 becomes the tip hook portion 27a of the lock link 27.
Since the protruding rod head 9 protrudes further toward the opening 16 than the opening 16, the protruding rod head 9 first presses against the lock release link 28 and moves the link 28 backward against the helical spring 29b.

Therefore, the lock release link 28 comes into contact with the cam 36 of the stopper rod 31, and the action of this cam 36 causes the stopper rod 31 to slide in the same direction as when the solenoid 32 was energized, thereby releasing the stopper rod 31. The abutment piece 31 a of the rod 31 is moved to a position corresponding to the groove 34 .

Therefore, when the protruding rod head 9 presses against the lock link 27 following the lock release link 28, the lock link 27 is released from the restriction of the abutment piece 31a and therefore moves backward as well.
Therefore, the projection rod 11 is allowed to enter into the lock box 12, and the door 1 can be closed.

Additionally, if the above-mentioned power outage accident occurs while the door 1 is closed, the rear movement of the lock link 27 will cause the stopper rod 3 to move backward.
1, even if an attempt is made to move the door 1 upward, the protruding rod head 9 will be blocked by the tip hook portion 27 of the lock link 27.
a and remains locked in the closed position.

In the event of such a power outage accident, in this invention the door outer frame 5
When the rotary operation knob 44 protruding from the guide pin 3 is rotated, the rotary lever 47 rotates as shown by the solid line in FIGS.
9 to slide the stopper rod 31 against the return spring 35.

Therefore, the lock link 27 is unlocked by the stopper rod 31, and the door 1 can be opened freely.

Therefore, door 1 can be unlocked manually.''1
Even if a power outage were to occur, no one would be trapped in a room.

As described in detail above, the present invention has a T-shaped protrusion protruding from the door, and a horizontally long hole in the door stop portion of the outer frame of the door corresponding to the protruding rod, and a vertical hole that communicates downward with the horizontally long hole. Provide an opening consisting of a hole,
A pair of spring-biased claws are arranged in the left and right positions sandwiching the vertical hole in the horizontally elongated hole, and when the door is closed, the protruding rod head pushes the claws away and enters the horizontally elongated hole. In addition, since the projecting rod neck is configured to fit into the vertical hole as the door is lowered, the structure is simple, but the iron door can be reliably placed in the closed position as the door is closed. Fixed.

Moreover, when the protruding rod enters the horizontally elongated hole as the door is closed, the claws, which have been retracted from side to side by the protruding rod head as described in the previous embodiment, will at the next moment apply a spring force to the protruding rod neck. Since the iron door is impulsively engaged with the door, the iron door can be put into a fixed position by lowering the door after sensing this impulsive engagement sound, and therefore the above-mentioned impact is used as an operational cue when closing and fixing the door. The engagement sound can be used, making the fixing operation reliable and easy.

Furthermore, when the door is closed as described above, the claw engages with the protruding rod neck that has protruded into the oblong hole by the spring force, and this engagement automatically holds the door in the closed position and prevents the door from opening unexpectedly. Since the door is prevented from moving in this direction, the next time the door is lowered, the protruding rod neck will surely fit into the vertical hole, thus improving the operability of the door.

In addition, the present invention has a lock link between the left and right claws that is rotatable in the front and back directions using the lower end as a fulcrum, and is always spring-biased in a forward upright position with its tip hook located near the top of the vertical hole. A stopper rod is installed on the back of the lock link to prevent the lock link from moving backward by protruding into the backward movement path of the lock link. Since the solenoid is configured to be pulled out, the door can be released from the closed position by energizing or de-energizing the solenoid as described in the previous embodiment, or the door can be locked in the closed position to prevent the door from opening. be able to.

Therefore, the closing device of the present invention can be advantageously used as a door locking device.

Furthermore, since the present invention electrically controls the solenoid to engage and release the lock, if a power outage occurs while the door is closed, the door will remain locked and no one will be able to enter or exit the room. However, the present invention supports a rotating shaft at a position above the stopper rod that penetrates the door outer frame in the indoor-outdoor direction and has a rotating operation knob on the protruding end of the surface. Then, by interlocking the rotating lever equipped on this rotating shaft with the stopper rod,
Since the stopper rod is configured to slide as the rotating shaft rotates, the lock can be manually released by rotating the rotation knob from either the indoor or outdoor side, allowing the door to be opened freely. Can be opened.

[Brief explanation of the drawing]

Figure 1 is a front view of the door, Figure 2 is a cross-sectional view taken along line A-A in Figure 1, Figure 3 is a perspective view of the closing device, Figure 4 is a front view of the lock box, and Figure 5 is a front view of the lock box. The same plan view, FIG. 6 is a cutaway view taken along the line B-B in FIG. 4, FIG. 7 is a cutaway view taken along the line C-C in FIG. Fig. 9 is a side sectional view showing the relationship between the stopper rod and the manual lock release mechanism, Fig. 10 is a sectional view taken along the line D-D in Fig. 9, and Fig. 11 is a sectional view taken along the line E-E in Fig. 9. , Figure 12 shows the constituent countries of the main part.

Claims (1)

[Scope of utility model registration request] This door is configured to be able to rise and fall freely in the closed position and to open from the raised state, and the door has a T-shaped protrusion protruding from the door, and a door stop on the outer frame of the door corresponds to the protrusion. An opening consisting of a horizontally elongated hole and a vertical hole communicating downward with the horizontally elongated hole is provided in the part, and a pair of claws are spring-biased in a direction to approach each other at left and right positions sandwiching the upper part of the vertical hole in the horizontally elongated hole. A lock link is provided between the left and right pawls, which is rotatable in the front and back directions using the lower end as a fulcrum, and is always spring-biased in a forward upright position with the tip hook facing near the top of the vertical hole. is mounted on the shaft, so that when the door is closed, the protruding rod head pushes away the pawl and lock link while pushing into the horizontally elongated hole, and as the door is lowered, the protruding rod neck fits into and engages with the vertical hole. The back of the lock link is equipped with a stopper rod for preventing the backward movement of the lock link, which is biased by a spring so as to enter into the backward movement locus of the lock link. The stopper rod is constructed so that it can be pulled out from within its trajectory, and a rotating shaft is supported above the stopper rod, passing through the door outer frame in the indoor/outdoor direction and having a knob for rotational operation on the protruding end. A door closing device characterized in that a rotary lever provided on the door is linked to the stopper rod so that the lever rod slides in the direction of pulling out from the trajectory as the rotating shaft rotates. .