JP3573721B2 - Door locking device - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a lock device for a door of a cabinet that stores electric equipment such as a distribution board or a distribution board.
[0002]
[Prior art]
For example, cabinets for storing electrical equipment such as distribution boards and switchboards are provided with hinged doors to prevent the internal electrical equipment from being inadvertently operated, and can be locked with the doors closed. It is. In such electrical equipment storage cabinets that are installed particularly outdoors, high waterproofness and dustproofness may be required.In such cases, packing is provided between the cabinet frame and the door, and the door is installed. It is closed and locked, and the packing is strongly compressed to ensure waterproof and dustproof properties.
[0003]
As such a cabinet locking device, for example, there is a device that locks a hook piece rotated by operating a handle attached to a door surface to a locking portion provided on the cabinet body. A large force was required because the rotation was caused by rubbing against the locking portion while resisting the force of operation, and it was difficult to operate the handle. In addition, when the hook is provided at the center of the door, the upper and lower ends of the door are warped due to the resilience of the packing, and the ends are separated from the cabinet body, thereby impairing the waterproof and dustproof properties. Was.
[0004]
In response to such a problem, the rods supported by the support portions provided at the upper and lower portions of the inner surface of the door are moved up and down by operating a handle attached to the door surface, and the tips of the rods are provided at the upper and lower portions of the cabinet. There is also a type in which the end portion of a rod rod of a general locking device of a type that engages with gold is engaged with a catch provided on the cabinet to press the door against the frame of the cabinet, but this is also However, since the tip of the rod rod is moved while being rubbed, a very large force is required, and there is a problem that it is difficult to operate the handle.
[0005]
[Problems to be solved by the invention]
The present invention has been made in order to solve the above problems, and provides a door locking device which does not require a large force at the time of locking and is excellent in waterproofness and dustproofness.
[0006]
[Means for Solving the Problems]
The above problem is that a four-axis clamp lock is provided on at least one of the upper and lower portions of the inner surface of the door, and a rod rod that is moved up and down by operating a handle is connected to the clamp lock, and the clamp lock is locked to the cabinet body. A door lock device provided with a catch, wherein the four-axis clamp lock pivotally connects a hook and a base end of a drive plate to a clamp lock body, and links to a middle portion between the hook and the drive plate. The present invention can be solved by the door locking device according to the present invention, wherein both ends of the plate are pivotally connected to each other and a rod bar is connected to the tip of the driving plate. It is preferable that the four-axis clamp lock is provided with a reverse movement preventing mechanism.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, embodiments of the present invention will be specifically described with reference to the drawings.
1 and 2 are longitudinal side views showing a state in which the door locking device of the present invention is attached to the door. FIG. 1 shows a state where the door is not locked, and FIG. 2 shows a state where the door is locked. Four-axis clamps 1 and 1 are attached to the upper and lower inner surfaces of the door D, respectively, and the clamps are connected to the handle 2 attached to the middle part of the door by rods 3 and 3. is there. In the figure, reference numerals 4 and 4 denote catches provided on the cabinet body B. In the locked state shown in FIG. 2, the hook 5 of the clamp lock 1 is locked.
[0008]
3 and 4 show an example of the clamp lock 1, in which the hook 5 and the base end of the drive plate 6 are pivotally attached to the clamp lock body 9 by pins 7 and 8, respectively. Both ends of the link plate 10 are pivotally connected to the intermediate portion between the hook 5 and the driving plate 6 by pins 11 and 12. By rotating the driving plate 6, the hook 5 is rotated via the link plate 10. There are two states, a locked state where the hook 13 at the tip of the hook 5 locks the catch 4 and an unlocked state where the catch 4 is not locked. It is preferable that the hook 5 and the driving plate 6 have a thickness and a slit is provided in an intermediate portion in the thickness direction to accommodate the link plate 10. For example, the hook 5 or the driving plate 6 is formed by folding a plate material in two. The link plate 10 can be accommodated and provided at an intermediate portion thereof.
[0009]
The clamp lock body 9, the hook 5, the drive plate 6, and the link plate 10 are pivotally connected by four shafts of pins 7, 8, 11, and 12, and constitute a four-axis clamp lock 1. In the locked state, the pin 12 is on the same side as the pin 7 with respect to the line connecting the pins 8 and 11, thereby providing a reverse movement preventing mechanism. That is, when an outward force is applied to the door by vibration, wind pressure, or the like in the locked state, the hook 15 is received from the receiving bracket 4 to the left in FIG. However, since the pin 12 is on the same side as the pin 7 with respect to the line connecting the pin 8 and the pin 11, the locked state is not achieved. In the unlocked state, the pin 11 is configured to be on the opposite side to the pin 8 with respect to the line connecting the pin 7 and the pin 12. Reference numeral 14 denotes a connection hole provided at the tip of the driving plate 6 for attaching the rod 3.
[0010]
FIGS. 5 and 6 show an example of a preferable handle 2, which has a clamp mechanism similar to that of the clamp lock 1. FIG. In this example, the bases of the hook 15 and the driving plate 16 are pivotally connected to the handle main body 19 by pins 17 and 18, respectively. And 22. Reference numeral 23 denotes a hook at the tip of the hook. When such a handle 2 is used, a receiving metal 24 to which the hook 23 is locked is provided in the cabinet body B in addition to the receiving metal 4.
[0011]
The base end of the drive plate 16 is extended as a handle 25. By turning the handle 25, the drive plate 16 is turned, the hook 15 is turned via the link plate 20, and the tip of the hook 15 is turned. The hook 23 can take two states, a locked state in which the catch 24 is locked and an unlocked state in which the catch 24 is not locked. As shown in FIG. 6, when the handle 25 is in the locked state, the handle 25 is fitted and stored in the handle body 19, and the handle 25 is projected by operating a lock 26 provided on the handle body 19, not shown. An engaging portion 27 that engages with the lock is provided so that the handle 25 cannot be raised. The handle 25 is provided with a keyhole 28 for inserting a key into the lock 26 provided, and a spring 29 for holding the handle 25 in one of a storage position where the handle 25 is folded down and a raised position. It is preferable that the hook 15 and the driving plate 16 have a thickness and accommodate the link plate 20 at an intermediate portion in the thickness direction. For example, the hook 15 is formed by folding a plate material into two, and the intermediate portion has a link plate. 20 are accommodated.
[0012]
The handle body 19, the hook 15, the drive plate 16, and the link plate 20 are pivotally connected to each other by four shafts of pins 17, 18, 21, and 22 to form a four-axis clamp lock. 21 is opposite to the pin 18 with respect to the line connecting the pin 17 and the pin 22, and in the locked state, the pin 22 is on the same side as the pin 17 with respect to the line connecting the pin 18 and the pin 21. Same as the clamp lock 1. Reference numerals 30 and 34 denote connection holes provided at the distal ends of the drive plate 16 and the hook 15, respectively, for attaching the rod bar 3 to them.
[0013]
As shown in FIGS. 7 and 8, the clamp lock 1 is attached to the end of the door D by an L-shaped attachment plate 31, and a packing 32 is adhered to the inner surface of the door D. A frame portion 33 is provided on the front surface of the cabinet B, and the end surface of the frame portion 33 abuts on the packing 32 to compress and secure waterproofness and dustproofness. The receivers 4, 4 are attached to the frame 33. The clamp locks 1, 1 and the handle 2 are attached to the door D, and the respective connection holes 14, 30 and 14, 34 are connected by the rods 3, 3, and when the handle 2 is raised, the driving plate 16 and the hook 15 are in the lower position. As a result, the hook 15 is unlocked, and the driving plate 16 and the driving plates 6 and 6 connected to the hook 15 by the rods 3 and 3 have their tips at the lower positions, and the hooks 5 of the clamp locks 1 and 1, 5 are all in the unlocked state.
[0014]
In this state, when the door D is closed and the handle 25 is tilted to the storage position, the tip of the driving plate 16 is in the upper position, the hook 15 is in the locked state, and the driving plate 16 and the hook 15 are connected to the rod rods 3 and 3. The leading ends of the drive plates 6 and 6 connected together by [1] are in the upper position, and the hooks 5 and 5 of the clamp locks 1 and 1 are all locked. As a result, the hooks 13, 13, and 23 lock the catches 4, 4, and 24, respectively, and the door D is secured to the cabinet body B with waterproofness and dustproofness. When the handle 25 is lowered, the hooks 5, 5, 15 lock the catches 4, 4, 24 by the link mechanism, and there is no portion to be rubbed and moved, so that a large force is not required. Here, if the key is inserted from the keyhole 28 and the lock 26 is operated to engage the lock rod with the engaging portion 27, the grip 25 cannot be caused, and the useless opening operation of the door D becomes impossible. .
[0015]
Further, as described above, when a force for opening the door D is directly applied to the door D, a force in the unlocking direction is directly applied to the hooks 5, 5, and 15, but in the locked state. Since the pin 12 is configured to be on the same side as the pin 7 with respect to the line connecting the pin 8 and the pin 11, a force for further moving the drive plates 6, 6, 16 in the locking direction is applied. That is, the hooks 5, 5, 15 do not open.
[0016]
In the above configuration, the handle 2 is provided with the clamp mechanism. However, any handle having a function of moving the rods 3, 3 up and down may be used. When the handle 2 is provided with a clamp mechanism as in the above-described configuration, the door D can be locked to the cabinet body in the middle part in addition to the upper part and the lower part. There is also an advantage that the waterproofness and dustproofness between the door D and the cabinet body B are further improved. In the above embodiment, the clamps are provided at the upper and lower portions of the inside of the door D, and the handle attached to the intermediate portion between the outer clamps is connected by the rod bar. In a cabinet or the like, a handle may be provided on the upper or lower part of the door, a clamp lock may be provided on the upper or lower part of the door on the opposite side where the handle is provided, and both may be connected by a rod bar.
[0017]
【The invention's effect】
According to the present invention described above, the door lock does not require a large force, is excellent in waterproofness and dustproofness, and contributes to the industry as providing a door lock device that solves all conventional problems. It is extremely large to do.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a main part in an unlocked state according to an embodiment of the present invention.
FIG. 2 is a longitudinal sectional view of a main part in a locked state according to the embodiment of the present invention.
FIG. 3 is a side view of the unlocked state of the clamp lock.
FIG. 4 is a side view of the locked state of the clamp lock.
FIG. 5 is a longitudinal sectional side view of a main part in an unlocked state of a handle.
FIG. 6 is a longitudinal sectional side view of a main part in a locked state of the handle.
FIG. 7 is a cross-sectional plan view of a main part showing a mounting state of the clamp lock.
FIG. 8 is a cross-sectional plan view of a main part showing an attached state of the clamp lock.
[Explanation of symbols]
REFERENCE SIGNS LIST 1 clamp lock 2 handle 3 rod rod 4 catch 5 hook 6 drive plate 7, 8 pin 9 clamp lock body 10 link plate 11, 12 pin 13 hook portion 14 connecting hole 15 hook 16 drive plate 17, 18 pin 19 handle body 20 Link plates 21 and 22 Pins 23 Hooks 24 Receptacles 25 Handles 26 Locks 27 Engaging portions 28 Key holes 29 Spring 30 Connection holes 31 Mounting plates 32 Packing 33 Frame portions 34 Connection holes B Cabinet body D Door

Claims (2)

At least one of an upper part and a lower part of the inner surface of the door is provided with a four-axis type clamp lock, a rod rod which is moved up and down by operating a handle is connected to the clamp lock, and a receiving member for locking the clamp lock is provided on the cabinet body. A door lock device, wherein the four-axis clamp lock pivotally connects a hook and a base end of a drive plate to a clamp lock body, and pivots both ends of a link plate at an intermediate portion between the hook and the drive plate. A door lock device comprising a rod rod connected to a tip end of a driving plate while being attached and connected. 2. The door locking device according to claim 1, wherein the four-axis type clamp lock includes a reverse movement preventing mechanism.

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