JP2010090579A - Box for housing electric equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a box for housing electric equipment, which enables the miniaturization of a latch device, and which makes the cost of manufacture of the latch device low. <P>SOLUTION: This box for housing the electric equipment includes the latch device 13 which makes a door 11 locked by making a locking piece locked to an engaging fitting on the side of a box body 1 when the door 11 is closed, and which makes the door 11 unlocked by a lever operation when the door 11 is opened. The latch device 13 is attached to a side plate portion 12 of the door 11; and a cylinder lock 18 for locking the latch device 13 is provided in the state of facing the front of the door, in an adjacent position in the longitudinal direction of the latch device 13. When the cylinder lock 18 is turned, a lock plate is protruded, and engaged with a side portion of the lever of the latch device 13, so as to lock the lever in a locking position. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an electric equipment storage box structured to be locked by a latch device.

  Electric equipment storage boxes such as switchboards, distribution boards, and communication equipment racks are usually provided with a door on the front of the box body, and a latch device is widely used as a locking device. The latch device requires a lever operation when opening the door, but does not require a lever operation when closing the door. The latch device is always urged in the engagement direction by simply pressing the door against the box body. The stopper is operated and the locking is performed.

  For example, as disclosed in Patent Document 1, a cylinder lock is combined with a latch device, and a lever is locked by rotating the cylinder with a key so that a person who does not have a key cannot open the door. It is normal.

  The cylinder lock mounting structure is roughly divided into the following two types. First, as shown in FIG. 1, a stopper 2 is projected from the cylinder lock 1, and the stopper 2 is engaged with the engagement groove 4 of the mating member 3 according to the rotation of the cylinder lock 1, It is a structure to lock.

  Since this structure requires the stopper 2 to be rotated together with the cylinder lock 1, an extra space must be formed on the outer periphery of the cylinder lock 1. Moreover, the outer peripheral wall 6 must be formed in the main body 5 that houses the cylinder lock 1. For this reason, there was a problem that the whole was enlarged.

  In addition, a cutting operation is required to form a collar portion into which the retaining piece (stopper plate) of the cylinder lock 1 enters the assembly hole portion of the cylinder lock 1 of the main body 5, or if the assembly hole portion is used as a through-hole, In forming the mold, it is possible to easily form the flange portion, but there is a problem that the back surface opening of the main body 5 must be finally closed, the number of parts is increased, and the mounting work is complicated.

  As shown in FIG. 2, another cylinder lock mounting structure is provided with a slidable lock plate 7 at the lower end of the cylinder lock 1, and by rotating the cylinder lock 1, the lock plate 7 is projected to project the mating member. It is a structure which engages and locks the movement.

This structure requires a space at the lower end portion of the cylinder lock 1, but does not require an extra space at the outer peripheral portion of the cylinder lock 1, so that the structure can be made compact as a whole. However, when casting the main body 5, the slide groove portion of the lock plate 7 must have a structure in which the mold is pulled out from both the left and right sides, which requires a complicated structure mold and increases the production cost. There was a problem.
Japanese Patent Laid-Open No. 2005-2698

  Accordingly, an object of the present invention is to solve the above-described conventional problems, to provide a box for storing an electric device in which the latch device can be made compact and the manufacturing cost of the latch device is low.

  In the present invention made to solve the above problems, when the door is closed, the locking piece is locked and locked to the engagement metal fitting on the box body side, and when the door is opened, the locking is performed by operating the lever. In the electric equipment storage box provided with the latch device to be released, the latch device is attached to the side plate portion of the door, and the cylinder lock for locking the latch device is disposed at the adjacent position in the longitudinal direction of the latch device. It is characterized by being provided in front of the door.

  As described in claim 2, it is preferable to provide a structure in which a hole portion on which a lock plate of a cylinder lock can be slid is provided on the door mounting surface side of the main body of the latch device. In addition, it is preferable to provide a hole for retaining the cylinder lock and restricting rotation on the door mounting surface side of the main body of the latch device.

  According to a fourth aspect of the present invention, it is preferable that the lock plate of the cylinder lock is engaged and locked with the side portion of the lever of the latch device. According to a fifth aspect of the present invention, it is preferable to provide a hole closing member that covers a hole in which the lock plate of the cylinder lock can slide on the door mounting surface side of the main body of the latch device.

  According to the present invention, the latch device can be miniaturized and the mold structure for manufacturing can be simplified. Further, although the latch device is attached to the side plate portion of the door, the cylinder lock is arranged in front of the door, so that there is an advantage that the door can be easily locked and unlocked.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
3 is an external perspective view of the electric device storage box of the embodiment, FIG. 4 is a perspective view of the latch device, FIG. 5 is an exploded perspective view thereof, and FIGS. 6 and 7 are sectional views.

  As shown in FIG. 3, the electric device storage box of the present invention includes a box body 10 and a door 11 supported by a hinge on the front surface thereof, and a latch device 13 is attached to a side plate portion 12 of the door 11. .

  As shown in FIGS. 4 and 5, the latch device 13 includes a vertically long main body 14, a lever 17 pivotally attached to an arm 15 of the main body 14 by a pin 16, and a cylinder lock 18. . The main body 14 is provided with a cylinder lock storage hole 19 at an end portion in the longitudinal direction, and a cylinder lock 18 is stored inside the main body 14 facing the front of the door 11. The structure of the portion near the cylinder lock storage hole 19 will be described later.

  The lever 17 is integrally provided with an operation portion 20 on the front surface side and a locking piece 21 on the back surface side, and is always repelled in the locking direction by a spring 22 disposed around the pin 16. As shown in FIG. 4, the engagement metal fitting 23 projecting from the box body 10 is engaged. Since the locking fitting 23 has an inclined surface, when the door 11 is closed, the locking piece 21 is guided by the inclined surface and locked to the engaging fitting 23 on the box body 10 side, and the locked state of FIG. Become. When opening the door 11, the lever 17 is operated to the near side as shown in FIG. 7 to rotate the locking piece 21 to release the lock. The operation of the latch device 13 is the same as that of a general latch device.

Next, the cylinder lock 18 and the cylinder lock storage hole 19 will be described with reference to FIGS. 8 and 9.
As shown in FIG. 8, the cylinder lock 18 includes a cylindrical rotor 24, a tumbler 25 that enters and exits a slit formed on a side surface thereof, and a stopper plate 26 as main components. When the key is inserted, the tumbler 25 is housed inside the rotor 24. However, since the stopper plate 26 is a member for preventing the tumbler 25 from being detached, it remains protruding even when the key is inserted.

  In the present invention, the rotor 24 of the cylinder lock 18 is accommodated in the cylinder lock accommodation hole 19 of the main body 14. As shown in FIG. 9, a slot 27 for accommodating the protruding tip of the tumbler 25 is formed at a 180 ° rotation position on the peripheral wall of the cylinder lock accommodation hole 19. This corresponds to the locking position and the unlocking position.

  A protrusion 28 is provided on the bottom surface of the rotor 24 at an eccentric position. A lock plate 30 is provided on the bottom side of the rotor 24. The lock plate 30 is housed in a hole 31 formed in the lower part of the cylinder lock housing hole 19. The protrusion 28 is fitted in an oval hole 31 of the lock plate 30. By inserting a key into the cylinder lock 18 and rotating the rotor 24, the lock plate 30 is linear along the straight portions 32 and 33. Slide to.

  Here, the straight portion 32 of the lock plate 30 comes into contact with the side wall 34 of the hole portion 31, and the straight portion 33 of the lock plate 30 comes into contact with the side plate portion 12 of the door 11 to be guided in the linear direction. When the lock plate 30 slides away from the cylinder lock 18, the tip of the lock plate 30 engages with the notch 35 on the side of the lever 17 of the latch device 13 as shown in FIG. Lock so that there is no. With this structure, the door 11 can be reliably locked in a closed state.

  Note that the stopper plate 26 of the cylinder lock 18 always protrudes from the rotor 24. For this reason, as shown in FIG. 11, if the stopper plate 26 is inserted into another hole 36 formed in the lower portion of the cylinder lock housing hole 19, the cylinder lock 18 is prevented from coming off. If the hole 36 has the shape of the AA cross-sectional view of FIG. 9, the rotation angle of the rotor 24 can be restricted by the stopper plate 26 coming into contact with the inner wall 37 as the rotor 24 rotates.

  In the present invention, these holes 31 and 36 are open in the side surface 38 of the main body 14. For this reason, it is sufficient to have a structure in which the hole forming mold is pulled out from one side when the main body 14 is cast, and there is an advantage that the manufacturing cost can be reduced without requiring a mold having a complicated structure.

  In addition, when the lock plate 30 is brought into contact with the side plate portion 12 of the door 11 and is slid as described above, there is a concern that the side plate portion 12 of the door 11 is wrinkled or rusted. However, as shown in FIG. 12, this concern can be eliminated by providing a hole closing member 40 that covers the side surface of the main body 14 or the side plate portion 12 of the door 11 where the lock plate 39 slides.

  An adhesive tape can be used as the hole closing member 40. The adhesive tape exhibits a strong adhesive force in a direction perpendicular to the surface, but has a characteristic that it is weak against a shearing force in a direction parallel to the surface, so that even if the adhesive surface faces the lock plate 30, the lock plate There is no problem in the operation of 30.

  As described above, according to the present invention, the cylinder lock 18 is disposed on the side of the latch device 13 in the longitudinal direction, so that the size can be reduced and the mold structure can be simplified. . Although the latch device 13 is attached to the side plate portion of the door 11, the cylinder lock 18 is arranged in front of the door, so that there is an advantage that the door 11 can be easily locked and unlocked.

It is a perspective view which shows a prior art example. It is a perspective view which shows another prior art example. It is an external appearance perspective view which shows the electric equipment storage box of embodiment. It is a perspective view of the latch device of an embodiment. It is a disassembled perspective view of the latch apparatus of embodiment. It is sectional drawing which shows the locked state of the latch apparatus of embodiment. It is sectional drawing which shows the unlocking state of the latch apparatus of embodiment. It is a perspective view of a cylinder lock explaining a principal part, a front view of a main part, a side view, and a sectional view. It is a disassembled perspective view of the principal part. It is a perspective view which shows the locked state of the latch apparatus of embodiment. It is a rear view of the latch apparatus which shows the mode of retaining of a cylinder lock. It is a back perspective view of the latch device which shows the state where the hole closing member was stuck.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cylinder lock 2 Clasp 3 Partner member 4 Engagement groove 5 Main body 6 Outer wall 7 Lock plate 10 Box main body 11 Door 12 Side plate part 13 Latching device 14 Main body 15 Arm part 16 Pin 17 Lever 18 Cylinder lock 19 Cylinder lock accommodation hole 20 Operation portion 21 Locking piece 22 Spring 23 Engagement metal fitting 24 Rotor 25 Tumbler 26 Stopper plate 27 Slot 28 Projection 30 Lock plate 31 Hole portion 32 Straight portion 33 Straight portion 34 Side wall 35 Notch 36 Hole portion 37 Inner wall 38 Side surface 40 of main body Hole closing member

Claims (5)

  When the door is closed, the locking piece is locked and locked to the engagement metal fitting on the box body side, and when the door is opened, the electric device storage box provided with a latch device that releases the locking by lever operation, The latch device is attached to a side plate portion of a door, and is provided with a cylinder lock for locking the latch device at an adjacent position in the longitudinal direction of the latch device and facing the front of the door. Electric equipment storage box.   2. The electric device storage box according to claim 1, wherein a hole portion in which a lock plate of the cylinder lock is slidable is provided on the door mounting surface side of the main body of the latch device.   3. The electric device storage box according to claim 2, wherein a hole for preventing the cylinder lock from being detached and for restricting rotation is provided on the door mounting surface side of the main body of the latch device.   3. The electric device storage box according to claim 2, wherein a lock plate of the cylinder lock is engaged with a side portion of a lever of the latch device and locked.   3. The electric device storage box according to claim 2, wherein a hole closing member is provided on a door mounting surface side of the main body of the latch device to cover a hole portion where the lock plate of the cylinder lock can slide.

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