JP4535431B2 - Door fall prevention structure - Google Patents

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door piece lowering prevention structure for a cabinet that houses electrical and electronic equipment, and more particularly to a door door lowering prevention structure for a cabinet having a structure in which a side plate opening end of a cabinet body is fitted into an outer peripheral side plate of a front door. Is.

  Some electrical and electronic equipment storage cabinets have been developed that close so that the side plate of the box is fitted into the outer peripheral side plate of the front door. For example, as shown in FIGS. 13 and 14, it includes a box 1 having an opening in the front, and a front door 2 attached to one side of the box 1 with a hinge. The open end of the side plate 1a of the box 1 is fitted in the side plate 2a on the outer periphery of the front door 2 so that the box 1 is sealed, and a locking handle 3 is attached to the open / close end side of the front door 2. ing. The box body 1 has a hook stopper 4 projecting from a side plate 1 a thereof, and the handle 3 is provided with a hook 5 locked to the hook stopper 4. When the front door 2 is in a normal position with respect to the box 1, the hook stopper 4 on the box 1 side and the rotation shaft 6 of the hook 5 on the front door 2 side are located on the same horizontal plane. Therefore, when the handle 3 is rotated, the hook 5 can be hooked on the hook stopper 4 without being displaced. However, when a heavy object is mounted on the front door 2 and a load is applied or due to the weight of the door, the open / close end side of the front door 3 may be lowered. If it is attempted to close the front door 2 when such a downward movement occurs, the hook stopper 4 and the position of the pivot shaft 6 of the hook 5 will be displaced in the vertical direction. When this is done, the hook 5 hooks on the hook stopper 4 becomes shallow (FIG. 15), and the front door 2 cannot be securely locked to the box 1. Further, when the handle 3 is rotated, the hook 5 is locked to the hook stopper 4 while lifting the front door 2 upward, so that a very large force is required and the operation is difficult, and the front door 2 is opened. Sometimes, the side plate at the upper end of the open end of the box body 1 is in contact with the outer peripheral side plate at the upper portion of the front door 2 and cannot be opened smoothly. In addition, when the front door 2 is lowered, there is a problem that the front door 2 is slightly inclined with respect to the box 1 so that the appearance is deteriorated, and a structure that prevents the door from falling down is desired. .

  By the way, conventionally, a structure is known in which a front body opening is provided with a frame body and a front door is fitted inside the frame body to close the front surface of the electrical equipment storage box. . As such a structure for preventing the falling of the electrical equipment storage box, as shown in Patent Document 1, a door hanging prevention member is provided on the upper surface of the lower side of the frame body, and the side plate portion of the front door abuts when closed. It is known that can correct the lowering of the front door.

However, even if an attempt is made to attach a door sag prevention member as in Patent Document 1 to an electric and electronic storage box that is closed by fitting the side plate of the box into the outer peripheral side plate of the front door, the frame is not attached to the box. Since it was not provided, it could not be attached and the front door could not be prevented from falling down.
JP 2000-287313 A (FIG. 2)

  The present invention solves the above-described conventional problems, so that the side plate of the box is fitted into the outer peripheral side plate of the front door so that the opening of the front door is closed in the electric and electronic equipment storage box that closes the opening of the box. The present invention has been made to provide a door falling-down prevention structure that can correct the falling-down.

In order to solve the above-mentioned problems, the door electronic device storage box door fall prevention structure according to the present invention is provided on the side plate of the box body by opening and closing the front door by a hinge attached to one side of the box body. The door piece of the electric and electronic equipment storage box provided with a locking device that closes the opening of the box and locks the front door to the box so that the stepped portion is fitted into the outer peripheral side plate of the front door A fall prevention structure,
A position adjustment member having a receiving surface inclined upward from the front to the rear of the box is provided at the stepped portion of the box , and a handle is pivotally attached to the outer peripheral side plate of the front door, and the rotation of the handle the restriction was and the receiving surface by attaching a sliding member having a slidable inclined surface, the front door when closed by moving the door before the falling pieces by sliding on the receiving surface of the inclined surface upward While the front door can be closed,
The locking device is composed of a hook stopper and a hook locked to the hook stopper, and the hook stopper is provided on the step portion together with the position adjusting member on which the receiving surface is formed, and the hook is It is characterized by being pivotally attached to the outer peripheral side plate of the front door so as to be rotatable by a handle.

In the above-described invention, the handle has a handle main body including a flat portion and a peripheral wall portion surrounding the outer periphery thereof, and the sliding member is brought into contact with the peripheral wall portion to close the handle. A stopper piece for restricting the movement and a stopper edge for restricting the opening and turning of the handle can be provided. In addition, the hook can be pivotally attached to the handle so as to be rotatable integrally with the handle.

  The door piece lowering prevention structure of the present invention is provided with a receiving portion inclined upward from the front to the rear of the box on the box side, and a downward inclined surface facing the receiving surface is provided on the handle on the front door side. Therefore, when the front door that has been lowered is closed, the inclined surface on the front door side slides on the receiving surface on the box side, so that the front door that has been lowered can be correctly closed while being lifted upward. it can.

  Also, when the front door 2 is opened, the inclined surface on the front door side slides on the receiving surface, so that the front door 2 can be opened smoothly. Furthermore, since the inclined surface on the front door side is in contact with the receiving surface when the door is closed, the front door 2 is not inclined with respect to the box 1 and looks good.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
1 to 3 are views showing the door fall-down prevention structure of the present invention, wherein 1 is a box, 2 is a front door solidified by a hinge on one side of the box 1, and 3 is an opening / closing of the front door 2 A handle attached to the side plate 2a on the end side to lock the front door 2 to the box 1. On the periphery of the side plate 1a forming the box 1, a step 11 is formed by bending the side plate 1a inward. A position adjusting member 13 on which a receiving surface 12 is formed is fixed to the step portion 11 together with the hook stopper 4 with a screw 14 from the back side of the step portion 11. The hook stopper 4 includes a cylindrical portion 4a and a seating portion 4b. The position adjusting member 13 includes a plate main portion 15 that is fixed to the stepped portion 11 with screws or the like, and the receiving surface 12 that is inclined obliquely upward from the front door 2 side to the rear of the box body 1.

  On the other hand, the handle 3 attached to the front door 2 has a handle body 9 composed of a flat surface portion 3a and a peripheral wall portion 3b surrounding the outer periphery thereof, and a rotating shaft 6 having a prismatic portion 16 is provided therein. (Fig. 3). A rotation position holding member 17 that holds the position after the rotation of the handle 2 is attached to the base of the rotation shaft 6. An insertion hole 18 is provided in the side plate 2 a of the front door 2, and the rotation shaft 6 is inserted into the insertion hole 18, and the handle 3 is pivotally attached to the front door 2. The hole part provided in the sliding member 22 in which the inclined surface 21 was formed is penetrated on the outer side of 2a. A hook 5 having a square hole 23 is pivotally attached by a bolt 10 on the side of the rotating shaft 6 penetrating the side plate 2a. Since the square hole 23 is fitted in the prism 16, the hook 5 also rotates together with the rotation of the handle 3. The sliding member 22 is attached to the side plate 2a of the front door 2 with screws or the like.

  The inclined surface 21 of the sliding member 22 is formed at an angle corresponding to the receiving surface 12 of the position adjusting member 13, and the inclined surface 21 is inserted into a notch 19 formed in the side plate 2 a of the front door 2. And is configured to contact the receiving surface 12. When the front door 2 is closed, the lower surface of the inclined surface 21 can slide on the upper surface of the receiving surface 12, so that the front door 2 can be closed while moving the front door 2 that has been lowered downward. The sliding member 22 is formed with a stopper piece 31 and a stopper edge 32, and the stopper piece 31 is in contact with the inner side of the peripheral wall portion 3 b when the handle 3 is closed to restrict the rotation of the handle 3. . Further, when the handle 3 is opened, the stopper edge 32 is brought into contact with the inner side of the peripheral wall portion 3b to restrict the opening rotation of the handle 3.

  The opening / closing mechanism of the handle 3 will be described with reference to FIGS. FIG. 4 is a diagram showing the opened state of the handle 3. As described above, the rotary shaft 6 is mounted with the semi-ring-shaped rotary position holding member 17. Are formed with a small protrusion 17a and a large protrusion 17b at a required interval. A coil spring 25 having a recess 25a is pivoted in the vicinity of the rotating shaft 6. In the state of FIG. 4, the small protrusion 17 a is fitted in the concave portion 25 a of the coil spring 25, and the position after the handle 2 is rotated is held by the bias of the coil spring 25. Therefore, the handle 2 can be kept open. On the other hand, when the handle 2 is closed, the large protrusion 25a is fitted into the recess 25a of the coil spring 25 as shown in FIG. 5, so that the handle 3 can be maintained in the closed state.

  As shown in FIG. 6, the front door 2 is configured on the receiving surface 12 provided on the box body 1 side when the front door 2 is closed, as shown in FIG. 6. If the inclined surface 21 provided on the side is slid, the inclined surface 21 is moved obliquely upward on the receiving surface 12, so that the front door 2 is closed while lifting the front door 2 that has been lowered downward. be able to. If the handle 3 is then turned and closed, as shown in FIGS. 7 and 8, the hook 5 can be deeply hooked on the hook stopper 4, so that the box 1 and the front door 2 can be locked with great force. It can be done reliably without the need. In addition, when the front door 2 is opened, the inclined surface 21 on the front door 2 side slides on the receiving surface 12, so that the upper side plate at the open end of the box 1 becomes the outer peripheral side plate at the upper portion of the front door 2. It can be opened smoothly without contact. Furthermore, since the inclined surface 21 on the front door 2 side is in contact with the receiving surface 12 when the door is closed, the front door 2 does not tilt with respect to the box 1 and looks good.

  9-11 show another form of handle. The handle 3 is a clamp-type handle 3, 51 is a handle body, and 52 is a handle that covers the upper part thereof. The handle 3 is fixed to the front door 2 side, and a sliding member 61 projects from the lower surface of the end of the handle body 51, and the sliding member 61 has an inclined surface 62 that is inclined upward. Is formed. On the other hand, a position adjusting member 64 having a receiving surface 63 facing the inclined surface 62 is attached to the box 1.

  Two support shafts 53 and 54 are provided at the lower portion of the handle main body 51, and a hook 55 is rotatably attached to the support shaft 53. A rotation arm 56 of a handle 52 is attached to the support shaft 54. It is pivotally attached to the shaft. And since the handle 52 and the rotation arm 56 are connected by the link mechanism 57, when the handle 52 is lifted, the locking of the hook stopper 4 and the hook 55 is released. On the other hand, when the handle 52 is closed, the hook 55 bites the hook stopper 4, so that the front door 2 can be locked to the box 1.

  Also in the locking device configured as described above, if the inclined surface 62 provided on the front door 2 side is slid on the receiving surface 63 provided on the box 1 side, the inclined surface 62 is on the receiving surface 63. Therefore, even when the front door 2 is lowered, the positional deviation can be corrected and the box 1 can be accurately closed by the front door 2. If the handle 52 is then closed, the hook 55 can be deeply hooked on the hook stopper 4, so that the box 1 and the front door 2 can be reliably locked without requiring a large force. In the above embodiment, the sliding member 61 is provided on the lower surface of the end portion of the handle body 3, but it may be provided directly on the front door 2 as shown in FIG. It is preferable to provide it at both upper and lower ends. It goes without saying that the receiving surface 64 is attached in correspondence with the position of the sliding member 61.

  As described above, the door piece lowering prevention structure of the present invention has a receiving portion that is inclined upward from the front side to the rear side of the box body on the box side, and a downward facing surface facing the receiving surface on the front door side. Since the inclined surface is provided on the handle, when the front door is lowered one side, when the front door is closed, the positional deviation is corrected by sliding the inclined surface on the front door side on the receiving surface on the box side. The body can be accurately closed with the front door, and the box and the front door can be reliably locked without requiring a large force. In addition, when opening the front door, the inclined surface on the front door side slides on the receiving surface, so that the upper side plate at the open end of the box does not contact the outer peripheral side plate at the upper part of the front door, It can be opened smoothly. Furthermore, since the inclined surface on the front door side is in contact with the receiving surface when the door is closed, the front door 2 does not tilt with respect to the box 1 and has many advantages.

It is a perspective view which shows the door piece fall prevention structure of this invention. It is a disassembled perspective view of the door piece fall prevention structure of this invention. It is a perspective view which shows the back surface of a handle body. It is a rear view of the handle in an open state. It is a rear view of the handle in a closed state. It is a side view which shows the locking device of the state which closes the front door which fell one side. It is a side view of the locking device locked normally. It is a top view of the side of the locking device locked normally. It is a perspective view which shows the door piece fall prevention structure of another form. It is a side view of the locking device of FIG. It is sectional drawing which shows the internal structure of the locking device of FIG. It is a side view which shows the modification of the door piece fall prevention structure of another form. It is a perspective view of a cabinet. It is a side view which shows a mode that the door is falling down. It is a side view which shows the locking device shifted.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Box body 2 Front door 3 Handle 4 Hook stopper 5 Hook 6 Rotating shaft 9 Handle main body 11 Step part 12 Receiving surface 13 Position adjustment member 14 Screw 15 Plate main part 16 Square column part 17 Rotation position holding member 18 Insertion hole 21 Inclined surface 22 Sliding member 23 Square hole 25 Coil spring
31 Stopper piece 32 Stopper 51 Handle body 52 Handle 53, 54 Support shaft 55 Hook 56 Rotating arm 57 Link mechanism 61 Sliding member 62 Inclined surface 63 Receiving surface 64 Position adjusting member

Claims (3)

The front door is opened and closed by a hinge attached to one side of the box, and the step provided on the side plate of the box is fitted in the outer peripheral side plate of the front door to close the opening of the box and A structure for preventing a door from falling down in a box for storing electrical and electronic equipment having a locking device that locks the door to the box,
In the step portion of the box body is provided with a position adjusting member having a receiving surface an upwardly inclined to the rear from the box front, on the outer peripheral side plate of the front door, together when axially mounted a handle, the handle round A sliding member having an inclined surface that restricts movement and that can slide on the receiving surface is attached, and when the front door is closed, the inclined door is slid on the receiving surface and the lowered front door is moved upward. While allowing the front door to be closed
The locking device is composed of a hook stopper and a hook locked to the hook stopper, and the hook stopper is provided on the step portion together with the position adjusting member on which the receiving surface is formed, and the hook is An electrical and electronic equipment storage box door fall-down prevention structure characterized by being pivotally attached to the outer peripheral side plate of the front door so as to be rotatable by a handle. The handle has a handle body composed of a flat surface portion and a peripheral wall portion surrounding the outer periphery thereof, and the sliding member abuts against the peripheral wall portion and a stopper piece for restricting the closing rotation of the handle; The door edge-falling prevention structure for an electric / electronic equipment storage box according to claim 1, further comprising a stopper edge for restricting the opening and turning of the handle. The structure for preventing a door from falling down in an electric / electronic equipment storage box according to claim 1 or 2, wherein the hook is pivotally attached to a rotation shaft of the handle so as to be rotatable integrally with the handle.

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