JPH05256055A - Guard lock device - Google Patents

Abstract

PURPOSE:To easily set a guard lock without causing visitors to feel unpleasantness by making two guard arms provided to the upper part of a door engaged with and disengaged from a holder by operation of an operating mechanism. CONSTITUTION:A first guard arm 26 and a second guard arm 29, rotatively fixed respectively at each one end with pivots to a frame member 23, are provided to the upper part of a door. A holder 40, equipped with an engaging means that is engaged with and disengaged from the other end of the first guard arm 26, is provided and is made movable toward the engagement position and the disengagement position by operation of an engagement/disengagement mechanism. A moving member 30 is fixed to the other end of the second guard arm 29 and is made so that it can be brought selectively into contact with the end of the holder 40. By operation of an operating mechanism made of a swing link formed approximately in a triangular shape, the engagement/ disengagement mechanism is put in operation, making the guard arms 26 and 29 engaged with and disengaged from the holder 40, and thereby locking is set to and released from the guard arms.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door for various facilities such as a general house and a company, and a guard lock device used for the door.

[0002]

2. Description of the Related Art Generally, a conventional door has a guard arm,
There was a so-called guard chain. These guard chains, guard arms, etc. are used when the visitors' faces can be talked to, but it is difficult to enter the room carelessly. That is, before opening the lock, the guard arm,
Even if you set the guard chain and unlock it to open a part of the door, in the case of an unwanted person, the door will not open anymore and you can prevent the intrusion.

[0003]

However, in the above-mentioned conventional guard lock device, it is considerably troublesome to set the guard arm and the guard chain. The reality is that there are few. In addition, it is often rude to the customer to set a chain or the like for each visitor as a Japanese feeling. Especially, the guard chain and the guard arm are arranged in front of the eyes. This has also led to a loss of aesthetics from the inside front of the door or the side of the door. On the other hand, simply moving the position of the guard lock upward in consideration of this problem has many problems in terms of strength and safety.

The object of the present invention was made in view of the above-mentioned conventional drawbacks, and a guard locking device provided in a place where a visitor's eyes are not touched while the guard arm and the like are easily set. To provide.

[0005]

SUMMARY OF THE INVENTION A guard locking device according to the present invention includes first and second guard arms which are disposed on an upper portion of a door and one end of which is rotatably supported by a frame member. A holder that engages and disengages with the other end of the first guard arm by an engagement pin, an engagement and disengagement mechanism that moves the holder to an engagement position and a disengagement position, and is attached to the other end of the second guard arm. And a moving member that selectively comes into contact with the end of the holder, and an operation mechanism that operates the engagement / disengagement mechanism.

Further, the operation mechanism has a substantially triangular rotation link having first, second and third action pins in the vicinity of respective corners, and one end engages with the third action pin. An L-shaped link having a detection member at the other end, a rotation supporting member with which the second action pin engages and disengages, a connecting member having one end connected to a part of the rotating link, and another connecting member. The left and right slide members for moving the holder to the engagement position and the disengagement position are provided at the ends, and the operation rod is engaged with the first action pin, and when the door is in the released state, the action of the detection member and the L-shaped link causes
The left and right moving mechanism is provided with a stopper member so that the rotation link cannot be driven by the operating rod. Further, the first guard arm has an urging means that is positioned at an appropriate position when it is not engaged with the engaging means.

[0007]

As described above, according to the guard locking device of the present invention, the guard locking device can be easily set by simply operating the operating mechanism, is safe in terms of strength, and is not exposed to the public.

[0008]

An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a partially cutaway perspective view showing an overall appearance of a guard lock device according to the present invention, and FIG. 2 is a partially omitted configuration diagram showing the entire guard lock device according to an embodiment of the present invention. FIG. 5 is a partially omitted sectional view showing a lateral movement mechanism of a guard lock device according to an embodiment of the present invention, and FIG. Here, the guard lock device 10 is disposed on the upper portion of the door 1 and has a first guard arm 26 whose one end is rotatably supported by the frame member 23.
A second guard arm rotatably supported by the frame member 23, the other end of the first guard arm 26 and the second guard arm.
An engaging / disengaging mechanism 200 for moving a holder 40 having engaging means for engaging / disengaging a movable member 30 rotatably attached to the other end of the guard arm 29 to an engaging position and a disengaging position. The operating rod 12 is an operating mechanism for operating the engagement / disengagement mechanism 200.

The left and right moving mechanism 100 has first, second and third action pins 11a, 11b and 11c near each corner.
L having a substantially triangular rotation link 11 provided with a third action pin 11c at one end and a detection member 13 at the other end.
-Shaped link 14, rotation support member 15 with which second action pin 11b engages and disengages, and action pin 1 of said rotary link 11
1b and a connecting member 16 having one end connected to the first member.
The operating rod 12 is engaged with the action pin 11a.

The operating rod 12 is interlocked with a thumb turn (not shown) provided on the door or a door gripping tool, and can be pulled down in the direction of arrow A by operating these.
The rotation link 11 is supported by a rotation support member 15 so as to be removable. The rotation link 11 has the first action pin 1
The operating rod 12 is engaged with 1a, the connecting member 16 is engaged with the second action pin 11b, and the L-shaped link 14 is engaged with the third action pin 11c. The rotation support member 15 is fixed to the main body of the apparatus, and has a substantially U-shaped notch 15a with a depressed tip. The L-shaped link 14 is engaged with the action pin 11c in the elongated hole 14a at the base end.

The engagement / disengagement mechanism 200 comprises a left / right slide member 20, an up / down slide plate 21, a set plate 35, a holder 40, an engagement pin 22 fixed to the holder, and the like. Here, the left and right slide members 20 are pin-coupled to the connecting member 16 at one end, and are laterally slidably supported by the elongated holes 20a and the pins 33 fixed to the apparatus main body case. Further, the pins 18 fixed to the left and right slide plates 20 are engaged with the inclined grooves 19 of the upper and lower slide plates 21. The vertical slide plate 21 is supported in the concave groove 27 of the apparatus main body by the elongated hole 34 so as to be vertically movable.
The engaging pin 22 is fixed to the holder 40 at a portion opposed to the guard arm 26. A notch recess 41 is formed in the holder 40, and a vertical hole 43 that loosely fits a hook 42 that is erected on the upper and lower slide plates 21 is formed in the recess 41. Therefore, the holder 40 is
It moves in the arrow K direction and the arrow M direction in FIG. Holder 4
On both sides of 0, a set plate 35 having inclined surfaces 35a that are substantially the same as the inclined surfaces 44 at both ends of the holder 40 is fixed to the mounting body by pins 36. Therefore, even if the holder 40 shifts to the left or right when it rises, it is corrected by this inclined surface as it descends, and is correctly engaged with the elongated hole 25 of the first guard arm 26 when it is stored in the correct position and then protrudes. To do.

The first guard arm 26 is rotatably supported by the frame member 23 by the shaft 24, and when the engagement with the engagement pin 22 is released, the first guard arm 26 is returned to the original position by the spring 28. Being energized. One end of the second guard arm 29 is rotatably supported by the frame member 23 by a shaft 31, and the other end of the second guard arm 29 is rotatably supported by a pin 32. Therefore, when the door 1 is opened, the moving member 30 moves along the groove 27.

The operation of the guard locking device constructed as described above will be described with reference to FIGS. First, when the guard locking device is set when the door is closed in the initial state shown in FIG. 6, the operating rod 12 is pulled down. When the operating rod 12 descends in the direction of arrow A, the rotation link 11 tries to rotate in the direction of arrow R by the engaged rotation support member about the action pin 11b. However, the detection member 13 cannot project from the end surface due to the door frame. As a result, the detection member 13 is blocked by the door frame and cannot project, so that the rotation link 11 rotates about the action pin 11c as shown in FIG. Then, the action pin 11b engaged with the rotation support member 15
Comes off through the notch 15a, and the connecting member 16 is moved to the arrow L.
Push in the direction.

When the operating rod 12 is pulled further downward, the pivot link 11 pivots around the action pin 11c to move the connecting member 16 leftward. When the connecting member 16 moves leftward, the left and right slide members 20 also move leftward in the groove 27 at the same time. When the left and right slide members 20 move, the pin 1
The upper and lower slide plates 21 engaged with the inclined groove 19 via 8 move up from inside the concave groove 27. When the holder 21 moves up, the engagement pin 22 fixed to the upper end of the holder 21 moves to the first guard arm 2
6 is attached to the long hole 25. Then, when the door is opened, as shown in FIG. 1, the first guard arm 26 and the second guard arm 26
The guard arm 29 regulates the shape of the triangle in a triangular manner, which will be described later, and the door will not open beyond a predetermined angle. Therefore, it is possible to prevent visitors from entering. 9 and 1
0 is an explanatory view showing the open / closed state of the door. FIG. 9 shows that the engagement pin 22 is attached to the first guard arm 2 with the door closed.
6 shows a state in which 6 is engaged. FIG. 10 shows a state in which the door is opened and fixed by the first guard arm 26 and the second guard arm 29. 11 to 13 are explanatory views showing the relationship among the holder 21, the first guard arm 26, and the second guard arm 29. In FIG. 11, the holder 21 is lowered and the engagement pin 22 is not engaged with the first guard arm 26.

Next, the engagement / disengagement mechanism 200 raises the upper and lower slide plates 21 in the direction of arrow O. Then, as shown in FIG. 12, the engagement pin 22 and the first guard arm 26 are engaged with each other. When the door 1 is opened in this state, the holder 40 engaged with the first guard arm 26 moves in the direction of arrow P as the door rotates. In addition, the second guard arm 2
The moving member 30 engaged with the end portion of 9 moves in the direction of arrow Q. When the door 1 opens at a predetermined angle, the end 4 of the holder 40
5 and the end of the moving member 30 come into contact with each other and do not move any further.
Therefore, the door is fixed by the first guard arm 26 and the second guard arm 29 in a triangular shape and is stable.

Explaining a pattern that is not in a normal operating condition, if the operating rod 12 is operated with the door open,
As shown in FIG. 8, the detection member 13 projects from the end surface of the door.
When the detection member 13 projects from the end face of the door, the rotation link 1
1 rotates about the action pin 11b. Then, the action pin 11a engaged with the operating rod 12 is locked by the stopper member 17
It becomes a position where it abuts against, and it becomes difficult to descend further.
Therefore, the left and right slide members 20 do not move laterally,
The guard arm 26 and the engaging pin 22 do not engage with each other. Further, in the above embodiments, the drive mechanism of the operating rod 12 is omitted, but it can be driven by using a thumb turn, a lever handle or the like. Furthermore, another mechanism may be provided.

FIG. 14 shows a first embodiment of another embodiment of the present invention.
FIG. 3 is an exploded perspective view showing the guard arm 50 of FIG. The first guard arm 50 engages with the engagement pin 22 so that the elongated hole 5
1 and a shaft 52 is erected on the other end.
The shaft 52 is rotatably supported in a hole 53 formed in the frame member 23, and a retaining member 54 is fixed. The retaining member 54 presses the small semicircular portion 54a with a pressing member 56 having a semicircular groove 56a biased by a spring 55. The pressing member 56 is slidably supported by the frame 57. Therefore, the rotated first guard arm 50 is spring-biased so as to always return in parallel with the frame member 23.

15 to 17 are explanatory views showing the operating state thereof. In FIG. 15, the first guard arm 50 is located in parallel with the frame member 23, and the semicircular groove 56 a of the pressing member 56.
And the small semicircular portion 54a of the retaining member 54 are engaged with each other. FIG. 16 shows a state in which the first guard arm 50 rotates in the arrow X direction. At this time, the pressing member 56 moves the spring 5
It retreats in the direction of arrow S against 5. When the force applied to the first guard arm 50 is released, the pressing member 56 restores the original position. On the contrary, in FIG. 17, the arrow Y
It shows a case where the first guard arm 50 rotates in the direction. Even in such a case, the pressing member 56 contacts the great circle portion of the retaining member 54 and retracts in the direction of arrow S against the spring force. That is, in the case of such a configuration, the first guard arm 50 can always return to the original position even if the first guard arm 50 is rotated in the left or right direction. Therefore, according to such a mechanism, it can be used for both a right-opening door and a left-opening door.

[0019]

As described above in detail, the first member is disposed on the upper portion of the door and has one end rotatably supported by the frame member.
And a second guard arm, a holder that engages and disengages with the other end of the first guard arm by an engagement pin, an engagement and disengagement mechanism that moves the holder to an engagement position and a disengagement position, and Since it is composed of a moving member selectively attached to the end of the holder attached to the other end of the second guard arm and an operation mechanism for operating the engagement / disengagement mechanism, it is possible to operate the operation mechanism. The guard lock can be easily set, and since it is set on the upper end surface of the door, it will not be visible and will not make visitors uncomfortable. The operating mechanism includes a substantially triangular rotation link having first, second, and third action pins in the vicinity of each corner, and one end of the third action pin engages with the detection member at the other end. An L-shaped link, a rotation support member with which the second action pin engages and disengages, a connecting member whose one end is connected to a part of the rotating link, and a holder at the other end of the connecting member. The first operating pin is engaged with the operating rod, and the operating rod is moved by the action of the detection member and the L-shaped link when the door is in the released state. Since it includes a horizontal movement mechanism with a stopper member so that the link cannot be driven, whether the door is closed,
It automatically detects if it is open and can operate only when it is closed. Further, since the first guard arm, the second guard arm and the door are arranged so as to form a substantially triangular shape when they are actuated, it is possible to have a structure which is safe in terms of strength and is arranged on the door. However, it can be firmly fixed.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing an overall appearance of a guard lock device according to an embodiment of the present invention.

FIG. 2 is a partially omitted configuration diagram showing the entire guard lock device according to an embodiment of the present invention.

FIG. 3 is a partially omitted cross-sectional view showing a lateral movement mechanism of a guard lock device according to an embodiment of the present invention.

FIG. 4 is a partially omitted cross-sectional view showing a first guard arm portion of a guard lock device according to an embodiment of the present invention.

FIG. 5 is an exploded perspective view of a main part of an engagement / disengagement mechanism that is an embodiment of the present invention.

FIG. 6 is an explanatory view showing an operating state of the guard lock device of the present invention.

FIG. 7 is an explanatory diagram showing an operating state of the guard lock device of the present invention.

FIG. 8 is an explanatory diagram showing an operating state of the guard lock device of the present invention.

FIG. 9 shows an operating state of the guard locking device of the present invention,
It is explanatory drawing which shows the closed state of a door.

FIG. 10 is an explanatory view showing an operating state of the guard lock device of the present invention and showing an open state of the door.

FIG. 11 is an explanatory diagram showing an operating state of the guard lock device of the present invention.

FIG. 12 is an explanatory view showing an operating state of the guard lock device of the present invention.

FIG. 13 is an explanatory diagram showing an operating state of the guard lock device of the present invention.

FIG. 14 is an exploded perspective view of essential parts showing another embodiment of the guard lock device of the present invention.

FIG. 15 is an explanatory diagram showing an operating state of another embodiment of the guard lock device of the present invention.

FIG. 16 is an explanatory diagram showing an operating state of another embodiment of the guard lock device of the present invention.

FIG. 17 is an explanatory diagram showing an operating state of another embodiment of the guard lock device of the present invention.

[Explanation of symbols]

 1 Door 10 Guard Lock Device 11 Rotating Link 11a Working Pin 11b Working Pin 11c Working Pin 12 Operating Rod 13 Detecting Member 14 L-Link 15 Rotating Supporting Member 15a Notch 16 Connecting Member 17 Stopper Member 18 Pin 19 Inclined Groove 20 Left and Right Slide Member 21 Vertical slide plate 22 Engagement pin 23 Frame member 24 Shaft 25,51 Long hole 26,50 First guard arm 27 Recessed groove 28 Spring 29 Second guard arm 30 Moving member 31 Shaft 32 pin 33 pin 34 Long hole 35 set plate 35a inclined surface 40 holder 41 recessed portion 42 hook 43 vertical hole 44 inclined surface 45 end portion 52 shaft 53 hole 54 retaining member 55 spring 56 pressing member 57 frame 100 left and right moving mechanism 200 engaging and releasing mechanism

Claims (3)

[Claims] Claim: What is claimed is: 1. A first and a second guard arms, which are disposed on an upper portion of a door and one end of which is rotatably supported by a frame member, and the other end of the first guard arm, and an engaging pin. A holder that engages and disengages, an engagement and disengagement mechanism that moves the holder to an engagement position and a disengagement position, and selectively abuts on an end of the holder attached to the other end of the second guard arm. A guard lock device comprising a moving member and an operating mechanism for operating the engagement / disengagement mechanism. 2. The operation mechanism includes a substantially triangular rotation link having first, second, and third action pins near each corner portion, and one end of which engages with the third action pin. An L-shaped link having a detection member at the other end, a rotation supporting member with which the second action pin engages and disengages, a connecting member having one end connected to a part of the rotating link, and another connecting member. The left and right slide members for moving the holder to the engagement position and the disengagement position are provided at the ends, and the operation rod is engaged with the first action pin, and when the door is in the released state, the action of the detection member and the L-shaped link causes 2. The guard lock device according to claim 1, further comprising a left-right moving mechanism provided with a stopper member so that the rotation link cannot be driven by the operating rod. 3. The guard lock device according to claim 1, wherein the first guard arm has a biasing unit that is positioned at an appropriate position when the first guard arm is not engaged with the engaging unit.