JP2008121208A - Door locking device of cabinet for housing electric and electronic devices - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door locking device with less space for unlocking operation, usable for the door of a cabinet for housing electric and electronic devices. <P>SOLUTION: In this door locking device, a hole part 3 is formed in the one end side wall surface 2a of a door 2 closing a cabinet casing 1, and the hole part 3 is closed by a cover member 7 having a rotatable hook lever 6. The rotating shaft of the hook lever 6 is positioned inside the door. The cover member 7 is rotated to rotate the hook lever 6. Then, the engagement of the hook part 6a formed at the end of the hook lever 6 with a receiving part 9 formed in the cabinet casing is released to release the locked state. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a door locking device having a small unlocking operation space used for a door of a cabinet for storing electrical and electronic equipment.

  Conventionally, as this type of door locking device, for example, as shown in Patent Document 1, a door locking device having a structure in which a cabinet housing in which a bearing plate portion and a side plate portion are bent and a hook lever is pivotally supported. The device is known.

However, the unlocking of the conventional door locking device in the locked state is a structure in which the locking relationship is released by rotating the hooking lever, and the rotation axis of the hooking lever is the cabinet housing. It is common to be attached to the outside. For this reason, a relatively wide space for inserting the fingertips is required because the fingertips are hooked on the levers and rotated during unlocking. Moreover, a space for securing at least the rotation distance of the lever is also required. As a result, there is a problem in that it cannot be installed close to other cabinets, pillars, walls, or the like.
Japanese Utility Model Publication No. 4-2871

  The present invention solves the above-mentioned problems and can make the unlocking operation space as small as possible, and is installed in a sufficiently close place where other cabinets, columns, walls, etc. are in close proximity. The present invention has been completed for the purpose of providing a door locking device for a cabinet housing.

The apparatus of the present invention made to solve the above problems is a door in which a hole is formed in the wall surface of the door that closes the cabinet housing, and the hole is closed with a cover member provided with a swingable lever. A hook device provided at the front end of the hooking lever, wherein the hooking lever is rotated by rotating the cover member with the rotation shaft of the hooking lever positioned inside the door and rotating the cover member. Is structured to release the locked state by releasing the engagement with the receiving portion provided in the cabinet housing.
Moreover, it can also be set as the structure which can attach the padlock which prevents rotation of a cover member.

Since the door locking device for the electrical / electronic equipment storage cabinet according to the present invention is attached to the inside of the cabinet casing instead of the outside of the cabinet casing as in the prior art, The lock can be released with a small number of moving operations, and the unlocking operation can be performed in a narrow space.
Moreover, when the padlock which prevents rotation of a cover member can be attached to a cover member, security can be improved more.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
There are three typical patterns of the present invention, and each will be described below.
1 to 6 show a first pattern, FIG. 1 is an exploded perspective view showing the whole, FIG. 2 is an exploded perspective view of FIG. 1 viewed from the back side, and FIG. 3 is an attachment of a cover member. FIG. 4 is a perspective view of FIG. 3 viewed from the back side. In the figure, reference numeral 2 denotes a door for closing the cabinet 1 for storing electrical and electronic equipment. In the illustrated one, the door 2 is hinged at one end to the cabinet body 1, and a hole 3 is formed on the side wall surface 2 a on the other end of the door 2 that is not hinged, A cover member 7 integrally provided with a rotatable hooking lever 6 is attached around the hole 3.

  A rotation shaft of the hooking lever 6 is positioned inside the door 2, and the hooking lever 6 is rotated by rotating a cover member 7, and a hook provided at the tip of the hooking lever 6. The portion 6a is unlocked from the receiving portion provided in the cabinet body to release the locked state.

The structure of the cover member 7 will be described with reference to FIGS. 1 to 4. Reference numeral 5 denotes a fixing member, and reference numeral 6 denotes a hook lever provided integrally on the back side of the cover member 7. The fixed member 5 has bearings 4 and 4 projecting from the tip toward the inside, and the hook lever 6 having a hook portion 6a with the tip protruding in an L shape on the bearings 4 and 4 is a pin. The hook lever 6 is pivotally supported by the fixing member 5 so as to be rotatable.
The fixing member 5 is screwed to the side wall surface 2a after the hook lever 6 is inserted from the outside of the cabinet body 1 so that the bearing portions 4 and 4 protrude to the inside through the hole 3 of the door 2. Can be attached.
The hole 3 has a structure in which a rotating shaft of the lever and a hook portion 6a provided at the tip of the lever are put together. In addition, since the crosspiece 3a remains in the lower part of the hole 3, the structure is strong against bending even when the plate material of the door 2 is thin or when the door is thin.

Hereinafter, unlocking of the door locking device will be described in detail.
FIG. 5 is a cross-sectional view of the main part showing the locked state, and FIG. 6 is a cross-sectional view of the main part showing the unlocked state. When in the locked state, the cover member 7 is in a position lowered downward, and the hooking lever 6 is urged by a coil spring or a torsion bar (not shown) with the hook portion 6a protruding forward. Yes. As a result, the tip end portion of the hook portion 6a is engaged with the receiving portion 9 provided in the box main body 1 to hold the locked state firmly.
On the other hand, when releasing the lock, the hooking lever 6 rotates clockwise about the pin 8 by rotating the cover member 7 upward. As a result, the hook portion 6a swings through the hole portion 3 and moves in a direction to unlock the receiving portion 9, so that the lock is released.
Thus, in the present invention, the rotation axis of the hooking lever 6 is positioned inside the door 2, so that the rotation axis is larger than the distance between the door and the cover member end when the rotation axis is outside the door. The distance between the door and the cover member end is shortened by the amount located inside, and the arc drawn by the cover member end is reduced.
In addition, the rotation operation feels as if it is slightly lifted upward, and can be unlocked more easily. As a result, a space for rotating the latch as in the prior art is unnecessary, and the unlocking operation can be easily performed in a narrow space.

7 to 10 show the second pattern. FIG. 7 is an exploded perspective view of the main part, FIG. 8 is an exploded perspective view of FIG. 7 viewed from the back side, and FIG. FIG. 10 is a cross-sectional view of the main part showing the unlocked state.
In this case, a hole 3 is formed in the side wall surface 2 a, and a notch 3 b is formed in the lower part of the hole 3 leaving a crosspiece 3 a. Further, around this hole portion 3, a cover member 7 integrally provided with a rotatable hooking lever 6 similar to the first pattern is attached.
In the second pattern, the hook 6a of the hooking lever 6 is mounted so as to be positioned in the notch 3b. Thereby, since the distance between the rotating shaft and the hook portion 6a is increased, the rotating operation of the cover member 7 is performed more smoothly. Further, since the position of the rotation shaft can be lowered, the rotation operation of the cover member 7 only needs to apply a force in the upward direction, and the rotation operation of the cover member 7 can be performed more smoothly.
Further, in the second pattern, the upper piece of the cover member 7 is formed in a gradually curved arc shape so that the upper piece covers the door surface during the unlocking operation. Can be made thinner.

11 to 14 show a third pattern, FIG. 11 is a perspective view of the cover member 7, FIG. 12 is an exploded perspective view of FIG. 11 viewed from the back side, and FIG. FIG. 14 is a cross-sectional view of the main part showing the unlocked state.
In this case, the rotating shaft is provided at a position lower than the surface of the door, and the upper piece of the cover member 7 is shortened so as not to cover the door surface. For this reason, the upper piece does not damage the door surface during the unlocking operation, and the thickness of the cover member 7 can be further reduced.
In addition, although description was abbreviate | omitted, the locking operation and unlocking operation of a 2nd, 3rd pattern are the same as a 1st pattern.

  In addition to this, if the cover member 7 is formed with a hole 11 for padlock insertion, on the other hand, a hole for padlock insertion is also formed at the corresponding position of the fixing member 5 and locked with a padlock. Security can be further increased.

  As apparent from the above description, in the present invention, the rotation axis of the hooking lever is positioned inside the door, the cover member is rotated to rotate the hooking lever, and the hooking lever Because the hook part provided at the tip is unlocked from the receiving part provided in the cabinet body and the lock state is released, the lock can be released only by slightly rotating the cover, The unlocking operation can be performed in a narrow space.

It is a disassembled perspective view which shows embodiment of this invention. It is the disassembled perspective view which looked at FIG. 1 from the back surface side. It is a perspective view which shows the state which attached the cover member to the side wall surface of the door. It is the perspective view which looked at FIG. 3 from the back side. It is sectional drawing of the principal part which shows a locked state. It is sectional drawing of the principal part which shows a lock release state. It is a disassembled perspective view of the principal part which shows other embodiment. It is the disassembled perspective view which looked at FIG. 7 from the back surface side. It is sectional drawing of the principal part which shows the locked state of other implementation. It is sectional drawing of the principal part which shows the unlocking state of other implementation. It is a perspective view of the principal part which shows other embodiment. It is the perspective view which looked at FIG. 11 from the back side. It is sectional drawing of the principal part which shows the locked state of other implementation. It is sectional drawing of the principal part which shows the unlocking state of other implementation.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cabinet housing 2 Door 2a Side wall surface 3 Hole part 3a Notch part 4 Bearing part 5 Fixing member 6 Hook lever 6a Hook part 7 Cover member 8 Pin 9 Receiving part 11 Hole for padlock insertion

Claims (2)

  A door locking device in which a hole is formed in a side wall surface of a door that closes a cabinet housing, and the hole is closed with a cover member provided with a rotatable hook lever, and the rotation shaft of the hook lever Is positioned inside the door, and the cover member is rotated to rotate the hook lever, and the hook portion provided at the tip of the hook lever is unlocked from the receiving portion provided in the cabinet body. A door locking device for a cabinet for storing electrical and electronic equipment, wherein the door is locked.   The door locking device for an electrical / electronic equipment storage cabinet according to claim 1, wherein a padlock that prevents rotation of the cover member can be attached to the cover member.

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