JP2002364227A - Chain lock device of door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a chain lock device of a door superior in waterproofness and dust-proofness without requiring large force on the chain lock of the door. SOLUTION: Four-shaft type clamp locks 1, 1 are provided on rods 3, 3 moved vertically by the operation of a handle 2, and hook parts 13, 13 of hooks 5, 5 of the clamp locks 1, 1 are locked on carriers 4, 4 provided on a cabinet body.

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 door of a cabinet for accommodating electric equipment such as a distribution board or a distribution board.

[0002]

2. Description of the Related Art For example, cabinets for storing electric equipment such as distribution boards and distribution boards are provided with hinged doors in order to prevent inadvertent operation of the internal electric equipment. It can be locked. In such electrical equipment storage cabinets that are installed especially 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 in which a hook which is turned by operating a handle attached to a door surface is locked to a locking portion provided on a cabinet body. A large force was required to rotate against the locking portion while resisting the elasticity of the packing, and it was difficult to operate the handle. In addition, when the hook is provided at the center of the door, there is a problem that the upper and lower ends of the door are warped by the resilience of the packing, and the ends are separated from the cabinet body, thereby impairing waterproofness and dustproofness. Was.

In order to solve such a problem, a rod bar supported by a support portion provided on the upper and lower portions of the inner surface of the door is moved up and down by operating a handle attached to the door surface, and the tip of the rod bar is moved to the upper and lower portions of the cabinet. There is also a type in which the tip of a rod rod of a general locking device of a type that engages with a provided catch is engaged with a catch provided in a cabinet to press a door against a cabinet frame. This also has a problem in that a very large force is required since the tip of the rod bar is moved while being rubbed, and it is difficult to operate the handle.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and does not require a large force at the time of locking, and is excellent in waterproofness and dustproofness. I will provide a.

[0006]

SUMMARY OF THE INVENTION The above problem is caused by providing a four-axis clamp lock on at least one of an upper part and a lower part of an inner surface of a door, and connecting a rod bar which is moved up and down by operating a handle to the clamp lock. The problem can be solved by the door locking device according to the present invention, wherein the cabinet body is provided with a catch for locking the clamp lock. Further, the four-axis type clamp lock is configured such that the hook and the base end of the drive plate are pivotally connected to the clamp lock body, respectively, and both ends of the link plate are pivotally connected to an intermediate portion between the hook and the drive plate. Alternatively, it is preferable that the four-axis clamp be provided with a reverse movement preventing mechanism.

[0007]

Next, an embodiment 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. At the upper and lower portions of the inner surface of the door D, four-axis clamps 1 and 1 are attached, respectively. The clamp is connected to a handle 2 attached to an intermediate portion of the door by rods 3 and 3. is there. In the figure,
Numeral 4 denotes a catch provided on the cabinet body B. In the locked state shown in FIG. 2, the hook 5 of the clamp lock 1 is locked.

FIGS. 3 and 4 show an example of the clamp lock 1, in which hooks 5 and a base end of a driving plate 6 are pivotally connected to a clamp lock body 9 by pins 7 and 8, respectively. Hook 5
The link plate 10 is provided with pins 11
The hook 5 is rotated via the link plate 10 by rotating the drive plate 6, and the hook 13 at the tip of the hook 5 locks the catch 4. And an unlocked state in which 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 a 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] Clamp lock body 9, hook 5, drive plate 6,
The link plate 10 is pivotally connected by four shafts of pins 7, 8, 11, and 12 to constitute a four-axis clamp lock 1. In the locked state, the pin 12 connects the pins 8 and 11 with each other. A reverse movement preventing mechanism is provided by being on the same side as the pin 7 with respect to the connecting line. 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 pins 8 and 11, the unlocked 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.

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 hook 15 and the driving plate 1
6 are pivotally connected to the handle body 19 by pins 17 and 18, respectively, and both ends of a link plate 20 are pivotally connected by pins 21 and 22 to an intermediate portion between the hook 15 and the driving plate 16. 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 on the cabinet body B in addition to the receiving metal 4.

The base end of the drive plate 16 is extended as a handle 25, and the drive plate 1 is rotated by rotating the handle 25.
6 is rotated, the hook 15 is rotated via the link plate 20, and the hook 23 at the tip of the hook 15 is in the locked state in which the catch 24 is locked and the unlocked state in which the catch 24 is not locked. Two states can be taken. As shown in FIG. 6, when the handle 25 is in the locked state, the handle 25 is fitted and housed in the handle body 19, and the handle 25 is protruded 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 either the retracted position or the raised position where the handle 25 is tilted. Hook 15
It is preferable that the driving plate 16 has a thickness and accommodates and provides the link plate 20 at an intermediate portion in the thickness direction. For example, the hook 15 is formed by folding a plate material in two,
The link plate 20 is accommodated in the intermediate portion.

Handle body 19, hook 15, drive plate 1
6, the link plates 20 are mutually pins 17, 18, 21, 22
A pin 21 is pivotally connected by the four shafts to form a four-axis clamp lock. In the unlocked state, the pin 21 is on the opposite side of the pin 18 with respect to the line connecting the pins 17 and 22, and in the locked state. It is the same as the clamp 1 that 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. 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.

As shown in FIGS. 7 and 8, the clamp lock 1 is attached to the end of the door D by an L-shaped mounting 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 is pressed against the packing 32 to ensure waterproofness and dustproofness. The receivers 4, 4 are attached to the frame 33. Clamp locks 1 and 1 and handle 2 are attached to door D, and connection holes 14 and 30
When the handle 2 is raised, the drive plate 16 and the hook 15 are in the lower position, the hook 15 is unlocked, and the drive plate 16 and the hook 15 are connected to the rod 3. Drive plate 6, connected by 3,
In both cases, the hooks 5 and 6 of the clamp locks 1 and 1 are in the unlocked state.

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 bar. The drive plates 6 and 6 connected by 3 and 3 have their tips at the upper position, and the hooks 5 and 5 of the clamp locks 1 and 1 are all locked. This makes the hook 1
The doors D, 3, and 23 lock the receivers 4, 4, and 24, respectively. 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, the key is inserted through the keyhole 28 and the lock 26 is inserted.
When the lock rod is engaged with the engaging portion 27 by operating the lock, the grip 25 cannot be caused, and the useless opening operation of the door D becomes impossible.

As described above, when a force for opening the door D is directly applied to the door D, the hooks 5, 5, 15
However, in the locked state, the pin 12 is configured to be on the same side as the pin 7 with respect to the line connecting the pins 8 and 11, so that the drive plate 6,
A force for further moving in the locking direction is applied to 6, 6 so that the hooks 5, 5, 15 do not open.

In the above-described 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 configuration, the door D
Can be locked to the cabinet body even in the middle part in addition to the upper and lower parts, and there is an advantage that even if the door has a large vertical dimension, the waterproofness and dustproofness between the door D and the cabinet body B are further improved. . In the above-described embodiment, the clamps are provided on 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]

According to the present invention described above, there is provided a door locking device which does not require a large force for locking the door, is excellent in waterproofness and dustproofness, and which solves all the conventional problems. It is extremely large that contributes to the industry as a whole.

[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 of the handle in a locked state.

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 a mounting state of the clamp lock.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Clamp lock 2 Handle 3 Rod rod 4 Receipt 5 Hook 6 Drive plate 7, 8 pin 9 Clamp lock main body 10 Link board 11, 12 pin 13 Hook part 14 Connection hole 15 Hook 16 Drive plate 17, 18 pin 19 Handle body 20 Link plates 21, 22 Pins 23 Hooks 24 Receipts 25 Handles 26 Locks 27 Engaging portions 28 Keyholes 29 Springs 30 Connection holes 31 Mounting plates 32 Packing 33 Frames 34 Connection holes B Cabinet body D Door

Claims (3)

[Claims] 1. A four-axis clamp lock is provided on at least one of an upper portion and a lower portion of an inner surface of a door, and a rod bar which is moved up and down by operating a handle is connected to the clamp lock, and the clamp lock is locked to a cabinet body. A lock device for a door, comprising a catch. 2. A four-axis type clamp lock, wherein a hook and a base end of a drive plate are pivotally connected to a clamp lock body, respectively, and both ends of a link plate are pivotally connected to an intermediate portion between the hook and the drive plate. The door locking device according to claim 1, wherein the door is locked. 3. The door locking device according to claim 1, wherein the four-axis type clamp lock has a reverse movement preventing mechanism.