JP3085878B2 - Double 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 locking device for a double door, usually called a double door.

[0002]

2. Description of the Related Art Generally, a double door such as a clothes closet is provided with a main body (support) having an open front and openable and closable on both right and left sides of the main body to open and close a front opening of the main body. A pair of doors, and the pair of doors are locked in a closed position by a locking device. FIG.
This shows a conventional example of such a locking device, and reference numerals 1 and 2 in the figure denote a pair of doors. The pair of doors 1 and 2 are rotatably supported on both left and right sides of an opening of a main body (not shown), and position the other door 2 at a closed position on the back surface of one door 1. Member 3 is provided. Reference numeral 4 denotes a main plate forming a part of the main body, and defines a lower edge of an opening of the main body.

[0003] At the lower end of the door 1, a claw hooking mechanism 6 for fixing the door 1 to the main plate 4 is attached. The nail hooking mechanism 6 has a nail hook 8 that can slide up and down. The nail hook 8 has a projection 10 exposed from the end surface of the door 1. Then, when the hook 1 is pushed down via the projection 10 with the door 1 closed, the lower end of the hook 8 is fitted to the receiving metal 12 embedded in the base plate 4. Thereby, the door 1 is fixed to the main plate 4.

On the other hand, a lock mechanism 14 for fixing the door 2 to the door 1 is attached to the door 2. Lock mechanism 14
When a key is inserted into the keyhole 16 and turned, the lock plate 18 is protruded toward the door 1, and the protruded lock plate 18 is fitted to a receiving bracket 20 fixed to the door 1. As a result, the door 2 is fixed to the door 1.

[0005]

In the above locking device, when locking the opened doors 1 and 2, only the door 1 is first closed, and the door 1 is fixed to the main plate 4 by the claw hooking mechanism 6. Then, the door 2 is closed and the lock mechanism 14 is operated, and the door 2 is closed.
To the door 1 is required. Similarly, when the closed doors 1 and 2 are opened, the lock mechanism 1
After the door 4 is unlocked and the door 2 is opened, two different operations of opening the door 1 by removing the hooking mechanism 6 are required. For this reason, there has been a problem that the operation of locking and unlocking is complicated and time-consuming.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a double door locking apparatus which can easily perform locking and unlocking.

[0007]

In order to achieve the above object, according to the first aspect of the present invention, a pair of doors for opening and closing a front opening thereof is mounted on both sides of a support so as to be capable of opening and closing and rotating. A lock device for locking and unlocking the pair of doors of the double-sided door with respect to the support, and a lock mechanism provided on one of the pair of doors, and the support The first provided on the other of the pair of doors,
A lock portion, wherein the lock mechanism has an operating portion that is opened and closed, and a rotating portion that rotates between an open position and a closed position in conjunction with the opening and closing operation of the operating portion. The rotating portion is provided with first and second engaging portions that are separated from each other in the rotating direction, and the first and second engaging portions rotate the rotating portion to the closed position. When moved, the first and second locking portions are engaged with each other to prevent the pair of doors from opening and rotating,
When the rotating part is rotated to the open position, the first and second parts are rotated.
Are arranged so as to be released from engagement with the locking portions, respectively, to allow the pair of doors to open and rotate. In this case, the operation unit may be rotated as an opening / closing operation, and the rotation unit may be fixed to the operation unit. Further, regarding the first and second engagement portions,
When the rotating portion is rotated to a semi-closed position between an open position and a closed position, an engagement between the first engagement portion and the first locking portion, and It is preferable that the engagement between the second engagement portion and the second engagement portion is released, and the second engagement portion and the first engagement portion are engaged with each other. desirable. Further, between the first engagement portion and the second engagement portion, at least after the engagement between the first engagement portion and the first locking portion is released, the It is desirable to provide an intermediate engaging portion that engages with the first engaging portion until the second engaging portion engages with the first engaging portion.

[0008]

According to the first aspect of the present invention, it is assumed that the rotating portion of the lock mechanism is now rotated to the open position and the pair of doors are open. When locking a pair of doors from this state,
First, both doors are turned to the closed position. Thereafter, the operation unit of the lock mechanism is closed to rotate the rotating unit to the closed position. Then, the first and second engaging portions engage with the first and second locking portions. Due to the engagement between the first engagement portion and the first engagement portion, one of the doors cannot be opened and rotated with respect to the support, so that the second engagement portion and the second engagement portion are not allowed to rotate. The engagement prevents the other door from opening and rotating with respect to the one door. Thereby, a pair of doors are locked. When opening a pair of locked doors, the operation unit is opened to rotate the rotating unit to the open position. Then
The engagement between the first and second engaging portions and the first and second locking portions is released. Thus, the pair of doors can be opened and rotated. According to the second aspect of the present invention, the pair of doors can be locked and unlocked in the same manner as described above by opening and closing and rotating the operation unit. In the invention according to claim 3, the operating member is operated to rotate the rotating member to the semi-closed position. Then, the engagement between the first engagement portion and the first engagement portion and the engagement between the second engagement portion and the second engagement portion are released, respectively. Engage with the first locking portion. Therefore, one of the doors cannot be opened and rotated, while the other door can be opened and rotated. In the invention according to claim 4, after the engagement between the second engaging portion and the second locking portion is released, the second
The intermediate engaging portion engages with the first engaging portion until the engaging portion of the first engaging portion and the first engaging portion engage. Therefore, one of the doors cannot be opened and rotated during that time.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to FIGS.
This will be described with reference to FIG. FIG. 1 shows an embodiment of a double door locking apparatus according to the present invention. In this embodiment, a support having an open front surface (only a base plate 26 which constitutes a part of the support is illustrated). ) Are fixed in such a manner that a pair of doors 22 and 24 rotatably supported on both left and right sides of the door 22 abut against a main plate. In the following description, for convenience, the direction in which the doors 22 and 24 open is the forward direction,
The closing direction is called backward.

First, the schematic configuration of the locking device will be described.
The right door (one door) 22 is provided with a lock mechanism 30 that is operated to be locked and unlocked by a key (not shown), and a first plate and a second door are provided on the main plate 26 and the left door 24. Two locking members (first and second locking portions) 40 and 50 are provided, respectively.

As shown in FIG. 2, the lock mechanism 30 includes:
It has a main body 31. The main body 31 includes a cylindrical cylinder portion 31a and a flange portion 31b provided integrally with a rear end portion of the cylinder portion 31a. The surface is exposed from the front of the door 24. On the other hand, the flange portion 31
“b” is abutted against the back of the door 24. Then, by tightening a screw (not shown) inserted into a screw insertion hole 31c formed in the flange portion 31b, the main body 31 is tightened.
Is fixed to the door 24.

A shaft (operation part) 3 is provided on the cylinder part 31a.
2 is rotatably inserted. By inserting a key into the keyhole 32a, the shaft body 32 is moved to a position shown in FIG. 2A (hereinafter, referred to as a closed position) and to a position rotated 180 ° from the closed position in the arrow X direction ( (Hereinafter referred to as an open position). Moreover, 9 from the closed position
At the intermediate position rotated by 0 ° (hereinafter, referred to as a semi-closed position), it is configured not to rotate unless a rotational force larger than the rotational force required to rotate at another position is applied. . Reference numeral 33 is a closed position mark indicating a closed position, and reference numeral 34 is an open position mark indicating an open position.

The rear end of the shaft body 32 is
A disc-shaped engaging member (rotating portion) 35 is fixed to a protruding end portion of the protruding end portion by a nut 36. The engagement member 35 has first and second engagement portions 35a and 35b extending radially outward. The first and second engagement portions 35a, 35b
The first engaging portion 35a is disposed on the same plane in the front-rear direction, is separated from each other by 90 ° in the circumferential direction, and when the shaft body 32 is rotated to the closed position, the first engagement portion 35a is located on the lower side. , The second engagement portion 35b is disposed on the left side (the door 24 side). Therefore, when the shaft body 32 is rotated to the open position, as shown by an imaginary line in FIG.
The first engagement portion 35a is located on the upper side, and the second engagement portion 35a
b is located on the right side. Further, the first and second engagement portions 35a, 35b have the same length.

As shown in FIG. 1, the first locking member 40 has an L-shaped cross section. The first locking member 40 has a horizontal plate portion 41 extending in the left-right direction and a vertical edge extending from the front edge of the horizontal plate portion 41. And a vertical plate portion 42 standing upward. The horizontal plate portion 41 is fixed to the upper surface of the main plate 26 by means such as screws. Here, the first locking member 40 is the door 22
The first engaging portion 35a is arranged so that the first engaging portion 35a substantially contacts the central portion of the surface facing the rear of the horizontal plate portion 41 when the engaging member 35 is brought into contact with the main plate 26 and the engaging member 35 is rotated to the closed position. ing. Therefore, if you try to open the door 22 in this state,
The first engagement portion 35a abuts on the first locking member 40, thereby preventing the opening rotation of the door 22. In addition,
The engagement between the first engagement member 40 and the first engagement portion 35a is released when the engagement member 35 is rotated about 30 ° from the closed position.

The second locking member 50 is shaped like a rectangular parallelepiped that is long vertically and has a vertically extending engagement groove 51 formed on a side surface facing the door 22 side. The engagement groove 51 has a width substantially equal to the thickness of the second engagement portion 35b. Moreover, when the engagement member 35 is rotated to the closed position, the engagement groove 51
Is arranged so that the engaging portion 35b of the second member enters. Therefore, when the door 24 is to be opened in this state, the second engagement portion 35b abuts on the front side surface (rear side surface) of the engagement groove 51, whereby the opening rotation of the door 24 is prevented. You. The second locking member 50 and the second engagement portion 35
b means that the engagement is released when the engagement member 35 is rotated about 30 ° from the closed position.

In the locking device having the above structure, FIG.
As shown in (A), the shaft 32 (engaging member 35) of the lock mechanism 30 is rotated to the closed position, and the first and second engaging portions 35 are rotated.
a and 35b are engaged with the first and second locking members 40 and 50, respectively. In this state, the opening rotation of one door 22 is prevented by the main plate 26, and the opening rotation of the other door 24 is prevented by the one door 22. That is, it is in the locked state.

The engaging member 35 is moved from the closed position in the direction of arrow X 9.
When it is rotated by 0 ° and positioned at the semi-closed position, as shown in FIG. 3B, the first engagement portion 35a and the first locking member 40
Is released, and the engagement between the second engaging portion 35b and the second locking member 50 is released. On the other hand, the second
Is engaged with the first locking member 50. As a result, the door 22 cannot be opened and rotated, but the door 24 becomes rotatable and only the door 24 can be opened.

The engaging member 35 is further turned by 90 ° in the direction of arrow X.
When rotated to the open position, as shown in FIG. 3 (C), the first and second engagement portions 35a and 35b are connected to both the first and second locking members 40 and 50. No longer engages.
Therefore, both doors 22 and 24 can be opened and rotated. That is, it is in an unlocked state.

In order to lock the open doors 22 and 24, the doors 22 and 24 are closed and rotated until they hit the main plate 26. Thereafter, the shaft member 32 (engaging member 35) is rotated by 180 ° in the direction opposite to the arrow X direction to be at the closed position, and the first and second engaging portions 35a and 35b are moved to the first and second positions. What is necessary is just to engage with the locking members 40 and 50, respectively.

As described above, according to the above-mentioned locking device, the door 2 can be operated simply by rotating the shaft 32 of the lock mechanism 30.
2, 24 locking and unlocking can be performed. Therefore, locking and unlocking can be easily performed, and the trouble can be reduced. In addition, by rotating the shaft body 32 to the semi-closed position, the one door 22 can be locked and the other door 24 can be opened and rotated.

Next, another embodiment of the present invention shown in FIG. 4 will be described. The locking device shown in this figure uses a lock mechanism 30 'instead of the lock mechanism 30. In this lock mechanism 30 ', the first and second engagement portions 35
An intermediate engaging portion 35c is formed between the a and the 35b.
Moreover, the intermediate engaging portion 35c has both ends in the circumferential direction continuous with the first and second engaging portions 35a and 35b.
As a result, the first, second and intermediate engaging portions 35a, 35b,
35c is fan-shaped as a whole.

In the locking device of this embodiment, the shaft 3
2 is rotated between the closed position and the semi-closed position,
2 can be prevented from opening. That is, in the above embodiment, the shaft 32 (the engagement member 3
When 5) is rotated between the closed position and the semi-closed position, the first and second engagement portions 35a and 35b
0, 50, and the second engagement portion 35b may not be engaged with the first locking member 40 (see FIG. 4B). In such a case, the door 22 opens even though the shaft body 32 has not reached the open position.

In this regard, in this locking device, the intermediate engaging portion 35c engages with the first locking member 40 until the second engaging portion 35b engages with the first locking member 40. Combine. Therefore, it is possible to prevent the door 22 from being opened during that time.

It should be noted that the present invention is not limited to the above-described embodiment, and the design can be changed as appropriate. For example, in the above-described embodiment, the shaft 32 serving as the operation unit is rotated, but a push button is used as the operation unit, and the pressing operation of the push button is converted into a rotation motion inside the main body 31. A conversion mechanism may be provided, and the engagement member 35 may be rotated via the conversion mechanism. If you do so,
For example, when the button is pressed once while the engaging member 35 is rotating to the closed position, the engaging member 35 is rotated to the half-closed position, and when the button is pressed again, the engaging member 35 is moved to the closed position. The engagement member 35 may be configured to rotate to the open position by rotating and further pressing. In the above-described embodiment, the closed positions of the doors 22 and 24 are regulated by abutting the doors 22 and 24 against the main plate 26. However, the door 22 is abutted against the first locking member 40. The closing position of the door 24 may be regulated to form a mating portion on the door 22, and the closing position of the door 24 may be regulated by the merging portion.

[0025]

As described above, according to the first aspect of the present invention, locking and unlocking of a pair of doors can be performed only by opening and closing one operation unit, thereby reducing labor of opening and closing operations. can do. This applies to the second aspect of the present invention. According to the invention of claim 3, one door can be locked and the other door can be opened. Further, according to the invention of claim 4, it is possible to prevent the pair of doors from being opened during the locking or unlocking operation.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

2A and 2B are views showing a lock mechanism used in the embodiment, FIG. 2A is a front view, FIG. 2B is a side view, and FIG. 2C is a rear view. .

FIG. 3 is a diagram for explaining the operation of the embodiment,
3A shows a closed state, FIG. 3B shows a semi-closed state, and FIG. 3C shows an open state.

4A and 4B are diagrams showing another embodiment of the lock mechanism according to the present invention, wherein FIG. 4A shows a closed state, and FIG. 4B shows a state in which the rotating member is in a closed position and a semi-closed position. FIG. 6 is a diagram showing a state where the robot has been turned to an intermediate position of FIG.

FIG. 5 is a diagram showing an example of a conventional locking device.

[Explanation of symbols]

 Reference Signs List 22 Door (one door) 24 Door (other door) 26 Main plate (support) 30 Lock mechanism 30 'Lock mechanism 32 Shaft (operation part) 35 Engagement member (rotating part) 35a First engagement part 35b Second engaging portion 35c Intermediate engaging portion 40 First locking member (first locking portion) 50 Second locking member (second locking portion)

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. ⁷ , DB name) E05C 7/04 E05C 3/02-3/04 E05B 63/08 E05B 63/14 E05B 65/02 E05B 65 / 06 E05B 65/48

Claims (4)

(57) [Claims] 1. A pair of doors of a double swing door having a pair of doors for opening and closing a front opening thereof on both sides of a support so as to be openable and closable, for locking and unlocking the support with respect to the support. The locking mechanism provided on one of the pair of doors, and the first and second locking portions provided on the support and the other of the pair of doors, respectively. Wherein the lock mechanism has an operating portion that is opened and closed, and a rotating portion that rotates between an open position and a closed position in conjunction with the opening and closing operation of the operating portion. Is provided with first and second engagement portions that are separated from each other in the rotation direction, and the first and second engagement portions are configured to be connected to the first engagement portion when the rotation portion is rotated to the closed position. When the pair of doors is engaged with the second locking portions to prevent the pair of doors from opening and turning, and the turning portion is turned to the open position. Wherein the engagement with the first and second locking portions is released to allow the pair of doors to open and rotate, respectively. 2. The double door lock apparatus according to claim 1, wherein the operation unit is rotated as an opening / closing operation, and the rotation unit is fixed to the operation unit. 3. The first and second engaging portions, when the rotating portion is rotated to a semi-closed position between an open position and a closed position, the first and second engaging portions are connected to the first and second engaging portions. The engagement between the first engagement portion and the engagement between the second engagement portion and the second engagement portion are respectively released, and the second engagement portion and the second engagement portion are disengaged. The locking device for a double door according to claim 1 or 2, wherein the locking device is arranged to be engaged with the first locking portion. 4. Between the first engagement portion and the second engagement portion, at least the engagement between the first engagement portion and the first locking portion is released. An intermediate engaging portion that engages with the first engaging portion is provided between the first engaging portion and the second engaging portion until the second engaging portion engages with the first engaging portion. Item 4. The double door locking device according to Item 3.