JP7601705B2 - Door locking member for electrical/electronic device storage box - Google Patents

Description

The present invention relates to a door locking member used to lock the door of a box for storing electrical and electronic equipment.

Distribution boards, switchboards, and other panels have inner doors on the inside to prevent direct contact with live parts. Workers open or remove the inner doors only when inspecting or repairing the interior. Inner doors used in this way are locked with an inner door locking member, but the inner door locking member must be able to be easily engaged and disengaged, and must be able to lock securely when locked. To meet these demands, devices such as those described in Patent Documents 1 and 2 have been proposed that can securely fasten inner doors and open and close with a single touch.

JP 2006-49400 A JP 2005-183809 A

However, with a screw system like that in Patent Document 1, the screws must be attached and removed manually, making it difficult to work with. Also, with a structure like that in Patent Document 2, where the hook is released from its engagement with the engaged part by raising a lever, when pressure is applied to the middle door in the closing direction, the hook moves to a position where it engages with the engaged part. For this reason, even if the lever is raised to release the engagement in order to open the middle door while a large distribution board is laid down, the weight of the middle door can cause it to automatically return to its engaged state when the hand is released.

The inventor of this case has thoroughly studied this issue and attempted to solve it. The problem that this invention aims to solve is to provide a door locking member for a box for storing electrical and electronic equipment that reduces the amount of work required for operation and prevents the door from being accidentally locked due to external forces.

To solve the above problem, a door locking member for an electrical/electronic device storage box is provided, which includes a locking section that can be inserted into an insertion hole formed in a receiving member and rotated to lock the door, a handle section that can be rotated to move the locking section from a locked position to an unlocked position and can be raised from a tilted position relative to the main body, and a restricting section that restricts the handle section from moving in a tilted position between the locked position where the handle section is located when the handle section is tilted with the locking section in the locked position and the unlocked position where the handle section is located when the handle section is tilted with the locking section in the unlocked position.

It is also preferable to have a spring that applies a force in the direction of tilting the handle relative to the main body.

It is also preferable that the main body be configured with an indicator that shows the locked state at the position where the handle can be tilted.

It is also preferable that the handle portion has a through hole at a position that faces the display portion when the handle portion is tilted over.

It is also preferable that the surface of the restricting portion is provided with an inclined portion that can guide the movement of the handle portion toward either the locked or unlocked position when the handle portion is moved from an upright position to a tilted position.

The present invention makes it possible to provide a door locking member for a box for storing electrical and electronic equipment that reduces the amount of work required for operation and prevents the door from accidentally locking due to external forces.

1 is a front view of a board to which a middle door locking member is attached in an embodiment, with the outer door being in an open state. 1 is a perspective view of an inner door locking member and a receiving member that can be locked by the inner door locking member in an embodiment, with the locking portion in the unlocked position and the handle portion raised. 1 is a perspective view of an inner door locking member and a receiving member that can be locked by the inner door locking member in an embodiment, with the locking portion in the unlocked position and the handle portion in the unlocked maintaining position; 1 is a perspective view of an inner door locking member and a receiving member that can be locked by the inner door locking member in an embodiment, with the locking portion in the locked position and the handle portion raised. 1 is a perspective view of an inner door locking member and a receiving member that can be locked by the inner door locking member in an embodiment, with the locking portion in a locked position and the handle portion in a tilted position to maintain the locking state; 13 is a cross-sectional view showing the inner door in a locked state by the receiving member and the inner door locking member. FIG. 1 is a perspective view of a middle door locking member, with a partial cross section shown so that a spring portion can be seen. FIG. 13 is a side view of a modified inner door locking member.

The following is an embodiment of the invention. As can be understood from FIGS. 1 to 6, the door locking member 1 of this embodiment is provided in a box for storing electrical and electronic equipment, and includes a locking portion 19 that can be inserted into an insertion hole 40 formed in a receiving member 4 and rotated to lock the middle door 83. The locking portion 19 can be moved from a locked position to an unlocked position by rotating the locking portion 19, and includes a handle portion 12 that can be raised from a tilted position relative to the main body 11. The locking portion 19 is also provided with a restricting portion 13 that restricts the handle portion 12 from moving in a tilted state between a locked position where the handle portion 12 is located when the handle portion 12 is tilted with the locking portion 19 in the locked position, and an unlocked position where the handle portion 12 is located when the handle portion 12 is tilted with the locking portion 19 in the unlocked position. This makes it possible to provide a door locking member 1 that is inhibited from being automatically locked due to the influence of an external force while reducing the effort required for operation. More specifically, if the handle portion 12 is tilted down, it is possible to prevent the locking portion 19 from moving from the unlocked position to the locked position even if an external force is suddenly applied. Also, by being able to keep the handle portion 12 in a tilted state, it is possible to make the door locking member 1 smaller. Of course, even if the board 8 is tilted down and a force is applied in the direction of closing the middle door 83 due to gravity, it is possible to prevent the door from accidentally locking.

The door locking member 1 of the embodiment is attached above and below the middle door 83 of the board 8 as shown in FIG. 1. The middle door 83 is supported rotatably relative to the board body 81 of the board 8, and by using the door locking member 1, the middle door 83 can be kept closed except when necessary. The outer door 82, which is part of the exterior of the board 8, is also rotatably attached to the board body 81. When this outer door 82 is closed, it does not come into contact with the door locking member 1.

The door locking member 1 comprises a main body 11, a handle 12 that is movable relative to the main body 11, and a locking portion 19 that can be locked with the receiving member 4. The handle 12 is located on the front side of the middle door 83, and by manipulating the handle 12, the locking portion 19 that is located on the back side of the middle door 83 can be moved. To make this possible, the handle 12 is provided on one end of the first shaft 18, and the locking portion 19 is provided on the other end, so that the locking portion 19 can be moved by moving the handle 12 to rotate the first shaft 18.

In the embodiment, the locking portion 19 is a portion that protrudes radially outward from the first shaft portion 18, and the two locking portions 19 are configured to extend in opposite directions relative to the center of rotation of the first shaft portion 18. For this reason, the insertion hole portion 40 provided on the receiving member 4 side is configured such that a notch portion 42 into which the locking portion 19 can be inserted extends from a round hole portion 41 into which the first shaft portion 18 can be inserted.

In the door locking member 1 of the embodiment, the locking portion 19 can be moved from the locked position to the unlocked position by rotating the handle portion 12. It can also be moved from the unlocked position to the locked position. When the locking portion 19 is inserted into the insertion hole portion 40 and the handle portion 12 is rotated about 90 degrees to move the locking portion 19 from the unlocked position to the locked position, the locking portion 19 is positioned inside the receiving member 4, and the receiving member 4 and the door locking member 1 cannot be separated. Even if the locking portion 19 is inserted into the insertion hole portion 40, if the locking portion 19 is in the unlocked position, it is not locked, so the middle door 83 can be opened and closed freely.

The handle section 12 of the embodiment can be raised from a tilted state relative to the main body section 11. With the handle section 12 in the tilted state, the locking section 19 cannot be moved from the locked position to the unlocked position. Furthermore, the locking section 19 cannot be moved from the unlocked position to the locked position. To make this possible, the embodiment includes a restricting section 13 that restricts the handle section 12 from moving in a tilted state between the locked position where the handle section 12 is located when the handle section 12 is tilted with the locking section 19 in the locked position and the unlocked position where the handle section 12 is located when the handle section 12 is tilted with the locking section 19 in the unlocked position. The restricting section 13 of the embodiment is provided on the main body section 11.

To move the locking portion 19 from the locked position to the unlocked position or from the unlocked position to the locked position, the handle portion 12 is raised and operated. As can be seen from this, the operation of raising the handle portion 12 is required to switch the locking portion 19 between the locked position and the unlocked position, so that the locking portion 19 can be prevented from switching from the unlocked position to the locked position unintentionally. Note that the handle portion 12 in the embodiment can be raised or lowered around the second shaft portion 21 provided on the main body portion 11 as the center of rotation.

As can be seen from FIG. 7, in this embodiment, the spring portion 14 is provided to bias the handle portion 12 in a direction to tilt it relative to the main body portion 11. This makes it possible to prevent the handle portion 12 from rising up on its own. Even if the handle portion 12 is raised and the hand is released from the handle portion 12, the force of the spring portion 14 can cause the handle portion 12 to fall down, so that the handle portion 12 can be prevented from rotating between the locked position and the unlocked position even if the person does not perform the action of tilting the handle portion 12.

The restricting portion 13 shown in FIG. 8 is provided with an inclined portion 17 that can guide the movement of the handle portion 12 toward either the locked position or the unlocked position when the handle portion 12 is moved from an upright position to a tilted position. Therefore, even if the handle portion 12 is tilted between the locked position and the unlocked position, it can be guided to either the locked position or the unlocked position.

In the embodiment, the main body 11 has an indicator 15 that shows the locked state at the position where the handle 12 is tilted. This makes it easier to determine whether the locking part 19 is in the locked position or the unlocked position.

The display unit 15 may be displayed in different colors to make it easier to tell whether the locking unit 19 is in the locked or unlocked position. Also, letters such as "open" and "closed" may be displayed. By providing the display unit 15 at the end where the handle unit 12 is tilted, it is possible to clearly tell whether the locking unit 19 is in the locked or unlocked position.

In addition, the handle portion 12 of the embodiment is configured to have a through hole portion 16 at a position that faces the display portion 15 when the handle portion 12 is tilted. This makes it possible to view the display portion 15 when the handle portion 12 is tilted.

The present invention has been described above using examples of embodiments, but the present invention is not limited to the above embodiments and can be implemented in various forms. For example, the rotation angle for moving the locking part from the locked position to the unlocked position does not have to be 90 degrees. However, it is preferable that the rotation angle be within 180 degrees.

In the embodiment, the handle is configured so that when the handle is tilted down, it is positioned between one surface of the main body and the middle door, but this does not have to be the case.

In addition, the door locking member in the embodiment is for locking the middle door, but it may be for locking other doors.

REFERENCE SIGNS LIST 1 Door locking member 4 Receiving member 11 Main body portion 12 Handle portion 13 Restricting portion 14 Spring portion 15 Display portion 16 Through hole portion 17 Inclined portion 18 First shaft portion 19 Locking portion 40 Insertion hole portion 83 Middle door

Claims (5)

a locking portion that can be inserted into an insertion hole formed in the receiving member and rotated to lock the door;
A handle portion that can move the locking portion from a locked position to an unlocked position by rotating the handle portion and can be raised from a tilted position relative to the main body portion;
A door locking member for an electrical/electronic device storage box is provided with a restricting portion that restricts the handle portion from moving in a tilted position between a locked position where the handle portion is positioned when the handle portion is tilted with the locking portion in the locked position and an unlocked position where the handle portion is positioned when the handle portion is tilted with the locking portion in the unlocked position. The door locking member for an electrical/electronic device storage box according to claim 1, which is provided with a spring portion that applies a force in a direction that tilts the handle portion relative to the main body portion. The door locking member for an electrical/electronic device storage box according to claim 1 or 2, in which the main body has an indicator that shows the locked state at the position where the handle is folded down. The door locking member for an electrical/electronic device storage box according to claim 3, wherein the handle portion has a through hole at a position that faces the display portion when the box is folded down. A door locking member for an electrical/electronic device storage box according to any one of claims 1 to 4, in which the surface of the restricting part is provided with an inclined part that can guide the movement of the handle part toward either the locked or unlocked position when the handle part is moved from an upright position to a tilted position.

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