JP4562404B2 - Electrical and electronic equipment storage box door lock device - Google Patents

Description

  The present invention relates to a door locking device attached to a door of an electric / electronic device storage box.

A conventional locking device for a door of an electrical / electronic equipment storage box is a lock provided by attaching the clasp to the box body by rotating a pivot shaft to which a clasp is attached by operating a handle attached to the front surface of the door. The thing latched to the part is widely used. However, such a stopper that locks the stopper to the stopper is a stopper against the resilience of the packing when a seal is interposed between the door and the box body to make it highly airtight. There is a problem that it is difficult to operate because a large force is required to engage the engagement portion with the engagement portion.

Therefore, as a solution to this problem, there is a clamp type that uses a toggle mechanism for the handle and the lock part (see Patent Document 1). However, this has a problem that the number of parts is large and the cost is high.
Japanese Patent Laid-Open No. 2003-328604 (Claim 2)

  The present invention solves the above-mentioned conventional problems, and the door of the door that can be easily locked even in a highly airtight one having a packing interposed between the door and the box body, regardless of a simple structure. A locking device is provided.

The locking device for the door of the electrical and electronic equipment storage box according to the present invention includes a shaft hole portion of a bearing plate attached to a bent portion formed on a side surface of the door, and a bent portion on the upper and left and right sides of the inner peripheral edge of the elongated main plate portion. The handle portion is provided with a hook provided at the tip of the rotation shaft that is pivoted through the bent portion of the rotation shaft. A stopper mechanism for freely engaging and disengaging the receiving member provided on the box body that is applied to the door by the pivoting operation, and for preventing the handle portion from rotating forward and backward more than necessary on the bearing plate. The stopper mechanism is formed on the upper edge of the bearing plate, and the inner surface of the upper portion of the bent portion of the handle portion abuts upon locking or unlocking. According to the first aspect of the present invention, in the present invention, the hook receives the engaging portion of the hook with the receiving member. What was to be located on the door opening direction and the same line with respect to rotation axis when in the locked state to the invention described in claim 2.

  According to the first aspect of the present invention, when the bearing plate is attached to the bent portion formed on the side surface of the door, the folding shaft of the rotating shaft protruding from the inner surface of the handle portion pivotally supported by the shaft hole portion of the bearing plate is provided. Since the hook is provided at the tip that penetrates the curved part, the hook is engaged with and disengaged from the receiving member provided on the box body that is applied to the door by rotating the handle part. It is for unlocking. And when locking, the tip side of the hook wraps around and locks to the locking side of the receiving member, so even if it is highly airtight with a packing interposed between the door and the box body, At the initial stage of locking to the receiving member, the resistance of the packing is not received, so that the hook can be locked to the receiving member, and then the handle portion is further rotated to resist the elastic force of the packing. Thus, the hook is completely locked to the receiving member, and the packing interposed between the door and the box main body is fastened and can be easily locked in a highly airtight manner. Moreover, since the hook is located inside the door, it is excellent in appearance.

  According to the second aspect of the present invention, the engaging portion of the hook to the receiving member is positioned on the same line as the door opening direction with respect to the rotating shaft when the hook is locked to the receiving member. Therefore, even if a force in the opening direction is applied to the door by packing, the force is downwardly engaged with the engaging portion of the hook to the receiving member, so that the hook does not rotate, so the door is naturally unlocked. There is no fear.

Next, preferred embodiments of the present invention will be described with reference to the drawings.
Reference numeral 1 denotes a bearing plate attached to a bent portion 102 formed on the side surface of the door 101, and a rotating shaft 3 protruding from the inner surface of the handle portion 2 is pivotally supported in the shaft hole portion 11 of the bearing plate 1. . A hook 4 is provided at a tip 3 a of the rotating shaft 3 penetrating the bent portion 102, and the hook 4 is attached to the door 101 by the turning operation of the handle portion 2. The receiving member 5 provided in the can be freely engaged and disengaged.

  The bearing plate 1 is mounted on the outside of the bent portion 102 with the shaft hole portion 11 facing a through hole 102 a provided in the bent portion 102. The handle portion 2 having a rotation shaft 3 that pivotally supports the shaft hole portion 11 on the inner surface is formed in a shallow box body in which bent portions 22 are stretched on the upper and left sides of the inner peripheral edge of the elongated main plate portion 21. Therefore, the tip 3a of the rotating shaft 3 that penetrates the bent portion 102 is formed into a non-circular short column body that fits within the circumference of the rotating shaft 3, that is, a rectangular short column body, and is provided in the hook 4. The hook 4 is provided by fitting the hole 4 a, that is, a square hole, and screwing the mounting bolt 4 b into the screw hole 31 provided from the tip end surface of the rotating shaft 3.

The hook 4 is located on the same line as the force acting in the opening direction of the door 101 with respect to the rotating shaft 3 when the engaging portion 41b to the receiving member 5 is in a locked state with the receiving member 5. It is said that. That is, the hook 4 is provided with a horizontal U-shaped cut 40 through which the receiving member 5 can intervene from one side end of the plate material. A non-circular hole 4a that is a fixed portion of the cut portion 40, and a lower end edge of the notch 40 is formed as a locking portion 41 of the receiving member 5, and a leading portion 41a having a lower end portion of the locking portion 41 is formed. The protrusion 41c is formed between the base end engaging portion 41b, that is, at the tip of the engaging portion 41b.

  Further, as shown in FIG. 1, the receiving member 5 protrudes in a bar shape on the side surface of the inner bent portion 203 that is raised and provided inside the front opening 202 of the box body 201, as shown in FIG. As shown in FIG. 4, the receiving member 5 is formed such that the distal end side to be engaged with the hook 4 is a short cylindrical portion 51 and the proximal end side is a large-diameter hexagonal column portion 52, and is pierced through the inner bent portion 203. A set screw 204 inserted through the screw insertion hole 203 a is attached by screwing into a screw hole 53 provided from the base end surface of the hexagonal column portion 52. In this case, a packing material such as a rubber ring is interposed between the peripheral edge of the screw insertion hole 203a and the base end surface of the hexagonal column portion 52 in order to provide airtightness between the screw insertion hole 203a and the receiving member 5. It is preferable.

  Further, when the handle portion 2 is in a locked state where the hook 4 is engaged with the receiving member 5, the outer surface of the upper plate 22 a of the bent portion 22 is parallel to the front surface of the door 101. The upper surface is positioned on the outer surface of the bent portion 102 so that the upper surface is inclined with respect to the front surface of the door 101 in the unlocked state in which it is detached from the receiving member 5. And the handle | steering-wheel part 2 itself shall be hold | maintained in the locked / unlocked position by the holding mechanism part 6 so that the hook 4 interlock | cooperating with this can hold | maintain the locked state and the unlocked state.

  The holding mechanism 6 includes a locking projection 61a for holding the locking position and a locking projection 61b for holding the unlocking position, which are provided on the periphery of the base end of the rotating shaft 3, and a mounting hole 1a for the bearing plate 1. 5 (B) when the handle portion 2 is in the locked position. The needle lock spring 62 is provided with an engaging recess 62a that is screwed to the rotary shaft 3 at all times. As shown in FIG. 6B, when the handle portion 2 is in the unlocked position, the engaging recess 62a of the needle spring fixing spring 62 is engaged with the locking projection 61a for holding the locked position. The engaging recess 62a of the needle spring fixing spring 62 is pressed against the side surface of the rotating shaft 4 and engaged with the locking protrusion 61a for holding the position to hold the handle portion 2 in the locked / unlocked position. . In particular, since the unlocked state can be maintained with the door 101 open, the hook 4 is in the locked state when the door 101 is closed, and the outer peripheral edge of the hook 4 can be prevented from hitting the receiving member 5.

  Further, the handle portion 2 is rotated forward more than the locked state, and an unnecessary force is applied between the hook 4 and the receiving member 5 to prevent the hook 4 and the receiving member 5 from being distorted or damaged. In order to prevent the handle portion 2 from rotating forward and backward more than necessary in order to prevent the hook 4 from hitting the front surface of the door 101 and preventing the hook 4 and the door 101 from being distorted or broken, the reverse rotation of the unlocked state or more. The stopper mechanism 7 is provided.

  The stopper mechanism 7 is formed at the upper edge of the bearing plate 1 and the inner surface of the upper plate 22a of the bent portion 22 of the handle portion 2 contacts when locked or unlocked. That is, when in the locked state, the stopper edge 71 formed with the upper edge of the bearing plate portion 1 in the locking direction around the rotation shaft 3 parallel to the front surface of the door 101 is the upper plate of the handle bent portion 22. An inclined stopper edge 72 formed by inclining the upper edge of the bearing plate portion 1 in the unlocking direction around the rotation shaft 3 with respect to the front surface of the door 101 when in contact with the inner surface of 22a. However, as a contact with the inner surface of the upper plate 22a of the handle bending portion 22, forward and reverse rotation more than necessary is suppressed.

  Further, as shown in FIG. 8, the handle portion 2 is provided with an attachment hole 23 for attaching a padlock 8 for locking the handle portion 2 in a locked state, and the padlock 8 inserted through the attachment hole 23 is provided. The lock rod 8a can be brought into contact with the lock member 71a provided in the inner side of the stopper edge portion 71 so that the handle portion 2 cannot be rotated. 1 and 2, 9 and 9 are plastic door stop members fitted to the boss holes 25 and 25 provided on both inner surface sides of the handle portion 2, and the bent portion 102 of the door 101 is attached to the bent portion 102. The handle portion 2 is prevented from being touched and damaged.

  In this configuration, the bearing plate 1 is attached to the bent portion 102 attached to the side surface of the door 101, and the rotating shaft 3 that protrudes from the shaft hole portion 11 of the bearing plate 1 on the inner surface of the handle portion 2. Since the hook 3 is provided at the tip 3a by penetrating the tip 3a of the rotating shaft 3 through the bent portion 101, the hook 4 is moved by rotating the handle portion 2. The door 101 is engaged with and disengaged from the receiving member 5 projecting in a bar shape on the side surface of the inner bent portion 203 that is provided around the front opening 202 of the box body 201 that is covered with the door 101 and is locked. It is for unlocking.

  When locking, since the front end side of the hook 4 wraps around and engages with the receiving side of the receiving member 5, the packing 103 is interposed between the front ends of the inner bent portions 203 of the box main body 201 that contacts the inner surface of the door 101. Even if the door 101 is closed with the air gap interposed therebetween, the hook 4 can be performed without pressing the packing 103 at the initial stage of locking the hook 4 to the receiving member 5, so that no resistance is received. Can be easily locked to the receiving member 5. After that, the handle portion 2 is further rotated forward so that the packing 103 is biased against the elastic force of the packing 103, and the hook 4 is completely locked to the receiving member 5, and the door 101 and the box The packing 103 interposed between the main body 201 and the main body 201 can be fastened and easily locked in a highly airtight manner. Further, since the hook 4 is located inside the door 101, the appearance is excellent. In particular, the hook 4 is provided with a horizontal U-shaped cut 40 through which the receiving member 5 can intervene from one side end of the plate, and the lower end edge of the cut 40 is used as the locking portion 41 of the receiving member 5. Such a locking can be performed remarkably in the case where the leading end of the portion 41 is formed in the guiding portion 41a having the lower step portion and is formed in the protruding portion 41c at the distal end of the proximal engaging portion 41b. Is.

  Further, the hook 4 is positioned on the same line as the force acting in the opening direction of the door 101 with respect to the rotating shaft 3 when the hook 4 is engaged with the receiving member 5. By doing so, even if a force in the opening direction is applied to the door 101 due to the elastic force of the packing 103, the force is directed downward to the engaging portion 41b of the hook 4, so that the hook 4 does not rotate. There is no risk of natural unlocking. Further, if the hook 4 has a protrusion 41c formed on the tip end side of the engaging portion 41b, the door 101 is vibrated, so that the hook 4 can be pivoted about the rotation shaft 3. There is no possibility that the joint portion 41b is detached from the receiving member 5 and the lock is released.

It is a perspective view which decomposes | disassembles and shows the principal part of embodiment of this invention. It is a perspective view which decomposes | disassembles and shows embodiment of this invention for every component. It is a perspective view which shows a handle | steering-wheel part from an inner surface side. It is principal part sectional drawing which shows a locked state. It is a figure which shows a locked state, (A) is a schematic side view shown from the outer side of a handle part, (B) is a schematic side view shown from the inner side of a handle part. It is a figure which shows an unlocking state, (A) is a schematic side view shown from the outer side of a handle part, (B) is a schematic side view shown from the inner side of a handle part. It is a schematic side view which shows a locking (unlocking) process from the outer side of a handle part. It is a schematic side view shown from the inside of a handle part which shows the state which locked the handle part with the padlock. It is a perspective view which attaches the door locking apparatus which concerns on this invention to the door of an electrical / electronic equipment storage box, and shows in a locked state. It is a perspective view which attaches the door locking device which concerns on this invention to the door of an electrical / electronic equipment storage box, and shows it in an unlocked state.

Explanation of symbols

1 Bearing plate
11 Shaft hole 2 Handle 3 Rotating shaft
3a Tip 4 Hook
41b Engagement part 5 Receiving member
101 door
102 Folding part
201 Box body

Claims (2)

On the inner surface of the handle portion formed in the shallow box body in which the bent portion is stretched on the upper and left sides of the inner peripheral edge of the elongated main plate portion in the shaft hole portion of the bearing plate attached to the bent portion formed on the side surface of the door A hook provided at the tip of the rotating shaft that pivots the bent portion is provided on the box body that is applied to the door by the turning operation of the handle portion. A stopper mechanism is provided on the upper edge of the bearing plate, and the stopper mechanism is provided on the bearing plate to prevent the handle portion from rotating forward and backward more than necessary. And the inner surface of the upper plate of the bent portion of the handle portion abuts upon locking or unlocking .   The electrical and electronic device according to claim 1, wherein the engaging portion of the hook with the receiving member is positioned on the same line as the opening direction of the door with respect to the rotation shaft when the hook is locked to the receiving member. Locking device for storage box door.

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