Door opening prevention structure for electrical and electronic equipment storage boxes

Abstract

To deter tampering with electrical and electronic equipment stored in boxes designed for such equipment, while minimizing inconvenience to the intended users. [Solution] The door opening prevention structure for an electrical and electronic equipment storage box comprises a handle unit having a gripping part 22 that rotates when moving a locking part used to prevent the door body 121 from moving relative to the housing body in which the electrical and electronic equipment is installed, a gripping part holding mechanism that moves the gripping part from a state where it cannot be rotated to a state where it can be rotated, a release operation surface that can move the gripping part holding mechanism by pressing it, and a cover 30 that can cover the release operation surface, the cover having an opening 31 at a position in front of the release operation surface that allows the release operation surface to be operated, and in a front view, the overlapping area of ​​the release operation surface and the opening is smaller than the area of ​​the release operation surface.

Description

Technical Field

[0001] The present invention relates to a structure for suppressing the opening of a door of a box for housing electric and electronic devices.

Background Art

[0002] The door of a box for housing electric and electronic devices with a single door can usually be determined whether a latch such as a catch, which serves as a locking portion, is placed at a position where it hits the main body of the housing by operating a handle that serves as a gripping portion. If the catch or the like is placed at a position where it does not hit the main body of the housing, the door can be freely opened and closed. However, if the catch is placed at a position where it hits the main body of the housing, the door can be maintained in a closed state. Further, in order to make the catch or the like movable, a button may be pressed with a finger to raise the handle. This means that when the handle is raised, the handle can be operated to move the catch or the like. If the door can be opened, problems such as being able to operate the electric and electronic devices housed in the box for housing electric and electronic devices may occur. For this reason, a key or the like may be used, but inserting and turning the key is troublesome, or when inspecting a plurality of boxes for housing electric and electronic devices, it is also troublesome to prepare a plurality of keys accordingly. For this reason, as described in Patent Document 1, it is also considered that locking and unlocking can be performed by signal control.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

[0004] However, the technique disclosed in Patent Document 1 has to incorporate complicated locking means and has problems in terms of cost and the like. On the other hand, the inventor considered that even if the door of the box for housing electric and electronic devices is not completely prevented from being opened, if it seems difficult to open, it may be possible to suppress the intention to open the door and play pranks or the like.

Summary of the Invention

[0005] The inventors of this invention have attempted to solve this problem by diligently considering it. The problem that this invention aims to solve is to prevent tampering with electrical and electronic equipment stored in an electrical and electronic equipment storage box, without incorporating a complex locking mechanism, while also preventing inconvenience to the intended user. [Means for solving the problem]

[0006] To solve the above problems, the door opening prevention structure for an electrical and electronic equipment storage box comprises a handle unit having a gripping part that rotates when moving a locking part used to prevent the door body from moving relative to the housing body in which the electrical and electronic equipment is installed, a gripping part holding mechanism that moves the gripping part from a state where it cannot be rotated to a state where it can be rotated, a release operation surface that can move the gripping part holding mechanism by pressing it, and a cover that can cover the release operation surface, the cover having an opening that allows the release operation surface to be operated at a position in front of the release operation surface, and in a front view, the overlapping area of ​​the release operation surface and the opening is smaller than the area of ​​the release operation surface.

[0007] Furthermore, it is preferable that the length from the opening to the release operation surface be longer than half the length of the opening in the short direction when viewed from the front.

[0008] Furthermore, it is preferable to have a support part with a rising portion that extends away from the door body, and a cover capable of covering the release operation surface is attached to the rising portion of the support part.

[0009] Furthermore, it is preferable that the support part is sandwiched between the handle unit and the door body.

[0010] Furthermore, it is preferable that the upper end of the part of the cover that can contact the release operation surface is located between the heights of the lower and upper ends of the shaft member that serves as the pivot point of the release operation surface. [Effects of the Invention]

[0011] This invention can prevent tampering with electrical and electronic equipment stored in a storage box, while also preventing inconvenience to the intended user. [Brief explanation of the drawing]

[0012] [Figure 1] This is a perspective view of an electrical and electronic equipment enclosure with a cover, as seen from diagonally above, according to the embodiment. [Figure 2] This is an exploded perspective view of the door handle unit of the embodiment. [Figure 3] Figure 1 shows a cross-sectional view of the handle unit along line III-III. [Figure 4] This is a front view of the area around the door handle unit of the embodiment. [Figure 5] This diagram illustrates the general shape of the release operation surface of the door handle unit in the embodiment. However, (a), located to the left of the dashed line, is a front view of the handle unit with the cover removed, and (b), located to the right of the dashed line, is a diagram showing the approximate location of the release operation surface area relative to (a) with thick and diagonal lines. [Figure 6] This figure shows an example of the cover before inserting a tool into the opening. However, the gripping part is approximately parallel to the front surface of the door. [Figure 7] This figure shows an example of the state after a tool has been inserted into the opening in the cover. However, the gripping part extends at an angle from the front surface of the door. [Figure 8] Figure 3 is a magnified view of the area around the cover. However, a dashed line has been added to help visualize the length from the opening to the release operation surface. [Figure 9]This figure shows an example of using a connecting component, such as a magnet, located on the back side of the cover to connect the door body and the cover. [Modes for carrying out the invention]

[0013] The following describes embodiments for carrying out the invention. The door opening prevention structure of the electrical and electronic equipment storage box 10 of the embodiment includes a handle unit 20 having a gripping part 22 that rotates when moving a locking part 21 used to prevent the door body 121 from moving relative to the housing body 11 in which the electrical and electronic equipment is housed, a gripping part holding mechanism 23 that moves from a state where the gripping part 22 cannot be rotated to a state where it can be rotated, a release operation surface 24 that can move the gripping part holding mechanism 23 by pressing it, and a cover 30 that can cover the release operation surface 24. Furthermore, the cover 30 has an opening 31 at a position in front of the release operation surface 24 that allows the release operation surface 24 to be operated, but in a front view, the area in which the release operation surface 24 and the opening 31 overlap is smaller than the area of ​​the release operation surface 24. Therefore, it is possible to prevent tampering with the electrical and electronic equipment stored in the electrical and electronic equipment storage box 10 while preventing inconvenience to the intended user.

[0014] Here, we will describe the electrical and electronic equipment storage box 10. The electrical and electronic equipment storage box 10 is used to house electrical and electronic equipment such as circuit breakers, and has an openable and closable door 12 attached to the housing body 11 (see Figure 1). The housing body 11 and the door 12 are connected by hinges, and the door 12 can be rotated. In addition, to prevent the door 12 from opening when it is closed, the door 12 is equipped with a locking part 21 that can be operated by a gripping part 22 (see Figure 2). In this example, the locking part 21 is a part called a tongue, and the locking part 21 can be rotated by rotating the gripping part 22.

[0015] In order to rotate the gripping portion 22, the gripping portion 22 is extended in a state where it inclines obliquely from the front surface of the door 12. Usually, the box 10 for storing electric and electronic devices can be switched between such a state and a state where the gripping portion 22 is substantially parallel to the front surface of the door 12. In the state where the gripping portion 22 is substantially parallel to the front surface of the door 12, since the gripping portion 22 cannot be rotated to move the locking portion 21, after the door 12 is closed, usually, the gripping portion 22 is set in a state where it is substantially parallel to the front surface of the door 12. This state is maintained by the gripping portion holding mechanism portion 23 functioning to hold the position of the gripping portion 22 (see FIG. 3).

[0016] As described above, if the gripping portion holding mechanism portion 23 is moved, the gripping portion 22 can be switched from a state where it is substantially parallel to the front surface of the door 12 to a state where the gripping portion 22 extends obliquely from the front surface of the door 12. In order to move the gripping portion holding mechanism portion 23 in such a way, the user only needs to press the release operation surface 24. If the release operation surface 24 is pushed in sufficiently, the member of the gripping portion holding mechanism portion 23 that was hooked on one end side of the gripping portion 22 moves, and due to the force of the spring, one end side of the gripping portion 22 rises. Then, the gripping portion 22 is in a state where it extends obliquely from the front surface of the door 12.

[0017] Since it is widely known that when the release operation surface 24 is pressed in this way, one end side of the gripping portion 22 rises, in order to provide a psychological barrier to such a pressing operation, in the embodiment, a cover 30 that can cover the release operation surface 24 is provided (see FIGS. 3 and 4). Since the presence of the cover 30 can be easily grasped, it is expected that it can suppress the intention of a person who tries to play a prank from pressing the release operation surface 24.

[0018] However, in order to prevent inconvenience to the original user, the cover 30 is provided with an opening 31 that enables the release operation surface 24 to be operated. Since this opening 31 is provided on the front side of the release operation surface 24, it is possible to push in the release operation surface 24 through the opening 31. However, the size of the opening 31 is such that, in a front view, the area where the release operation surface 24 and the opening 31 overlap is smaller than the area of the release operation surface 24 (see FIGS. 4 and 5).

[0019] Also, since it is preferable that the opening 31 is sized such that it is difficult for an ordinary adult finger to insert, the opening 31 is preferably configured such that the length in the short side direction in a front view is 12 mm or less.

[0020] When the opening 31 is sized such that a finger cannot enter, a tool 91 may be inserted into the opening 31 to press the release operation surface 24 (see FIGS. 6 and 7). If each electrical and electronic equipment storage box 10 is provided with a similar door opening suppression structure, by preparing one tool 91, it becomes possible to open the doors 12 of all of those electrical and electronic equipment storage boxes 10.

[0021] Also, it is preferable that the length Ld from the opening 31 to the release operation surface 24 is longer than half of the length in the short side direction of the opening 31 in a front view (see FIGS. 4 and 8). With such a configuration, even if a finger barely fits into the opening 31, it is difficult for the finger to reach the release operation surface 24, and even if the finger reaches the release operation surface 24, it is difficult to sufficiently push in the release operation surface 24 with the finger.

[0022] The cover 30 may be attached directly to the door body 121, but to make it easier to attach and detach the cover 30, it is preferable to have a support part 40 with a rising portion 41 extending away from the door body 121, and to have a configuration in which the cover 30, which can cover the release operation surface 24, is attached to the rising portion 41 of the support part 40 (see Figures 2 and 3). With such a configuration, for example, only the support part 40 can be assembled into the door 12 in advance, and the cover 30 can be attached later as needed. Also, the cover 30 can be removed without removing the support part 40. In this case, the attachment and removal of the cover 30 is performed near the rising portion 41 extending away from the door 12, so that the work does not become difficult. In the example shown in Figure 3, the cover 30 is attached to the support part 40 using a screw member 81, but other means may be used for attachment.

[0023] The support part 40 can be attached in any way, but in the examples shown in Figures 2 and 3, it is fixed by being sandwiched between the door body 121 and the handle unit 20. This is because the installation work for the handle unit 20 can be used for the installation work for the support part 40. For this reason, it is preferable that the support part 40 be configured to be sandwiched between the handle unit 20 and the door body 121. In the examples shown in Figures 2 and 3, the support part 40 is fixed by being sandwiched between the packing 51 that contacts the door body 121 and the handle unit 20.

[0024] Incidentally, the cover 30 is positioned so as not to obstruct the movement of the gripping portion 22. The gripping portion 22 may move by switching between a state in which it extends diagonally from the front surface of the door 12 and a state in which it is approximately parallel to the front surface of the door 12, or by rotating from the state in which it extends diagonally from the front surface of the door 12, but the cover 30 should be positioned so as not to obstruct any of these movements. In the example shown in Figure 4, this is made possible by configuring the gripping portion 22 and the cover 30 so that they do not overlap in a front view. However, this configuration is not necessary.

[0025] Furthermore, it is preferable that the upper end of the part of the cover 30 that can contact the release operation surface 24 is located between the heights of the lower and upper ends of the shaft member 231, which is the pivot point of the release operation surface 24. This is because even if the cover 30 comes into contact with the release operation surface 24 when it is pushed in, if the contact portion between the cover 30 and the release operation surface 24 is between the heights of the lower and upper ends of the shaft member 231, it will be difficult to push in and rotate the release operation surface 24. Also, even if the cover 30 and the release operation surface 24 are already in contact when the cover 30 is in place, it will be difficult to push in the cover 30 and rotate the release operation surface 24.

[0026] By the way, in this embodiment, the door 12 has a door body 121 made of a plate-shaped member to which a handle unit 20 is attached. The handle unit 20 in this embodiment is fixed to the door body 121 by inserting the handle unit 20 into an insertion opening 122 provided in the door body 121 and sandwiching the door body 121 between the handle unit 20 and the handle holder 52. Furthermore, since the handle holder 52 is screw-fixed to the handle unit 20, it is possible to avoid the screws used to fix the handle unit 20 becoming stuck to the housing body 11.

[0027] Note that the cover 30 does not necessarily have to be fixed to the door body 121 or the like using the support parts 40. For example, a connecting part 61 such as a magnet or adhesive tape may be placed on the rear surface (back) of the cover 30 and fixed to the door body 121 (see Figure 9). Of course, the cover 30 may also be fixed to something other than the door body 121 using magnets or the like.

[0028] Although the present invention has been described above with reference to the embodiments, the present invention is not limited to the above embodiments and can be made into various forms. For example, it can be adapted to a double-door electrical and electronic equipment storage box. Also, the locking part does not necessarily have to be a plate-shaped tab, but may be a rod-shaped member or the like. [Explanation of Symbols]

[0029] 10. Boxes for storing electrical and electronic equipment. 11. Main unit 12 doors 21 Locking part 22 Gripping part 23 Grip holding mechanism 24 Release operation surface 30 Cover 31 Opening 40 Support parts 41. Upright section 121 Door body 231 Shaft member

Claims

1. A handle unit having a gripping part that rotates when moving a locking part used to prevent the door body from moving relative to the enclosure body in which electrical and electronic equipment is installed, A gripping part holding mechanism that moves to change the gripping part from a state where it cannot be rotated to a state where it can be rotated, A release operation surface that allows the gripping mechanism to be moved by pressing it, A cover that can cover the release operation surface, Equipped with, The cover has an opening at a position in front of the release operation surface that allows the release operation surface to be operated. A door opening prevention structure for an electrical and electronic equipment storage box, wherein, in a front view, the area where the release operation surface and the opening overlap is smaller than the area of ​​the release operation surface.

2. The door opening prevention structure for an electrical and electronic equipment storage box according to claim 1, wherein the length from the opening to the release operation surface is longer than half the length of the opening in the short direction when viewed from the front.

3. It is equipped with a support part that has a rising portion that extends away from the door body, The door opening prevention structure for an electrical and electronic equipment storage box according to claim 1 or 2, wherein a cover capable of covering the release operation surface is attached to the rising portion of the support part.

4. The door opening prevention structure for an electrical and electronic equipment storage box according to claim 3, wherein the support part is sandwiched between the handle unit and the door body.

5. The door opening prevention structure for an electrical and electronic equipment storage box according to claim 1, wherein the upper end of the part of the cover that can contact the release operation surface is located between the heights of the lower and upper ends of the shaft member that serves as the pivot point of the release operation surface.

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