JP2883583B2 - Locking mechanism for lids in boxes - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention enables the use of the inside of a box for storing electrical equipment and other box members, which is required to reduce the size of a box, such as a communication box, to save space, without waste. The present invention relates to a lock mechanism for a lid in a box or the like.

[0002]

2. Description of the Related Art A plate-shaped lock which is turned by an operation from the front side is provided on the back side of a lid member which is covered by an opening of a box member having a base plate attached to an inner bottom surface, and the forward end thereof is locked. Boxes equipped with a simple lock mechanism that locks by engaging one side with a locking receiving piece of a receiving member provided inside the box member, as a box for storing electric equipment such as a switchboard or a control panel. Although widely used, the conventional one uses, as shown in FIGS. 4 and 5, a receiving member 23 in which an inward locking receiving piece 24 is stretched inside a box member 21. A leg piece 35 protruding from an edge of the lid member 31 to an operation shaft 32 that is rotated by an operation from the front side of the lid member 31 as a lock fitting 33.
And a locking piece 33 is provided on the side end of the base plate 22 attached to the inner bottom surface of the box member 21. Of the base plate 22, thereby reducing the effective use area of the base plate 22. Particularly, in the case of a communication box or the like in which it is required to reduce the box size and save space. There is a strong need to solve problems.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-described problems by preventing the upper surface of the base plate from being obstructed by the receiving member or the lock metal at the side end upper surface. It is an object of the present invention to provide an inexpensive lid lock mechanism for boxes that can be used effectively without any problem.

[0004]

According to the present invention, there is provided a lock mechanism for a lid in a box according to the present invention, which is provided on a back side of a lid member which covers an opening of a box member having a base plate attached to an inner bottom surface. A plate-shaped lock fitting that is turned by operation from the front side of the lid member is provided, and a locking piece formed at the tip is formed at the tip of a plate-shaped receiving member provided inside the box member. In a lock mechanism for a lid in a box or the like which is locked by engaging with a locking receiving piece, an end of an inward piece protruding from a vicinity of an edge of the box member as the receiving member is provided through an upright arm. This receiving member is arranged above the narrow space formed between the inner surface of the box member and the base plate by using a series of outwardly facing locking receiving pieces. An outwardly facing piece with one end attached to an operation shaft that is rotated by operation from the front side of the lid member The entire surface of the base plate can be effectively used without being disturbed by the receiving member or the lock fitting by using a member in which an inward locking piece portion is continuously provided through a leg piece portion at an end. Things.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a preferred embodiment of the present invention will be described in detail with reference to FIGS. Reference numeral 1 denotes a box member made of a metal plate. A wooden base plate 2 is attached to the inner bottom surface of the box member 1 with a narrow space S between the box member 1 and the peripheral edge thereof. Inside the box member 1, a plate-shaped receiving member 3 is provided so as to be located above the narrow space S with a base attached to a required side plate 1 a. The receiving member 3 projects the upper end of the mounting piece 4 welded to the side plate 1a of the box member 1 inward from near the rim of the box member 1 to form an inward piece 5 and from the tip thereof. An upstanding arm portion 6 protruding from the edge of the box member 1 is continuously provided, and furthermore, an upper end portion thereof is outwardly bent and a middle portion thereof is cutout as a notch portion 8 to thereby form an outward locking receiving piece 7. , 7 are formed, and the tip of each locking receiving piece 7 is directed to an inner side surface of a lid member 11 described later, which is covered with the opening of the box member 1. In the receiving member 3, the tip of the inwardly facing piece 5 is positioned above the space S outside the edge of the base plate 2 so that the upper side of the upper side end of the base plate 2 is not obstructed. . In addition, the above-mentioned locking piece 7
Are provided with the notch 8 interposed between them, the box itself is turned upside down, and the handle 17 is changed to left-opening or right-opening. In this case, the locking member 7 can be used as a single member.
The box member 1 may be a normal box whose four side surfaces are surrounded by side plates. However, the box member 1 shown in the drawing has an open portion in which one of the opposite side surfaces is open above the base plate 2. This is a communication box in which a wiring cord is wired in a straight line on the upper surface of the side end of the base plate 2.

Reference numeral 11 denotes a cover member which covers the opening of the box member 1 described above, and a plate-shaped lock which is turned by operation of a handle 17 provided on the front side of the cover member 11 on the back side thereof. A metal fitting 13 is provided. This lock fitting 13
Is an operation shaft 1 rotated by an operation from the front side of the lid member 11.
2 is bent downward along the inner surface of the lid member 11 so that the end of the outward piece 14 having one end attached thereto is bent downward.
A leg portion 15 that does not protrude from the rim of the first member is continuously provided, and a distal end portion of the leg portion 15 is folded inward to form a short inward locking piece portion 16.
When the operation shaft 12 is rotated by an operation from the front side of the box member, the lock fitting 13 is rotated, and a short inward locking piece 16 at the lower end thereof protrudes from the edge of the box member 1 described above. 3, the lid member 11 is locked or unlocked with respect to the box member 1 by disengaging from the locking receiving piece 7 facing outward. The end does not protrude from the edge of the lid member 11, and the inward locking piece 16 following the distal end thereof is also short, and the upright arm 6 of the receiving member 3 located outside the edge of the base plate 2. Since it is further outside, even when the cover member 11 is covered over the opening of the box member 1, the upper end of the base plate 2 is not obstructed by the lock fitting 13. In the present embodiment,
The receiving member 3 is provided separately from the box member 1. However, the present invention is not limited to this.
Needless to say, they may be integrally formed.

[0007] In the apparatus constructed as described above, devices are attached to a base plate 2 attached to the inner bottom surface of the box member 1, the opening is closed by a cover member 11, and a lock fitting is operated by operating the cover member 11 from the front side. By rotating the lock 13, the locking piece 16 formed at the tip thereof is engaged with the locking piece 7 formed at the tip of the receiving member 3 provided inside the box member 1 to be locked. Occasionally, the lock member 13 is operated by the operation from the front side of the lid member 11.
Is rotated in the reverse direction to release the engagement of the locking piece 16 with the locking receiving piece 7 so that the lid member 11 can be opened. The locking receiving piece 7 of the receiving member 3 is connected to the distal end of the inward piece 5 protruding from the vicinity of the edge of the box member 1 outwardly through the upright arm 6. The locking piece 16 of the lock fitting 13 engaged with the locking receiving piece 7 is attached to the tip of an outward piece 14 having one end attached to an operation shaft 12 which is rotated by an operation from the front side of the lid member 11. Since the lid member 11 is connected inward through the leg pieces 15, not only when the lid member 11 is not covered at the opening of the box member 1 but also when the lid member 11 is covered. In this case, the upper surface of the side edge of the base plate 2 is not disturbed by the receiving member 3
This makes it possible to effectively use the wiring space as 0, thereby reducing the box size and saving space. In addition, if the leg ends do not protrude from the edge of the lid member 11, there is no danger of the wiring operator touching the lock fitting 13 during work and the leg piece portion 15 may be injured. Even if it is removed, it can be stably placed even if it is placed on the ground with its opening side.

In particular, the box member 1 having the base plate 2 attached to the inner bottom surface is connected to the box member 1 with one of the opposed side surfaces being open as described above. In the case where the wiring can be arranged in a shape, the wiring workability is extremely good and the base plate 2
Will also be more effective.

[0009]

According to the present invention, as apparent from the above description, the lid is turned by the operation from the front side of the lid member on the back side of the lid member which covers the opening of the box member having the base plate attached to the inner bottom surface. A locking member formed at the tip of a plate-shaped locking member provided at the tip of a plate-shaped receiving member provided inside the box member so as to lock. In the lock mechanism of the lid of the box, the projecting direction of the locking receiving piece of the receiving member and the locking piece of the locking metal is set to be opposite to that of the conventional one. The upper surface of the base plate attached to the bottom surface can be effectively used up to the side end without being disturbed by the receiving member or the lock fitting, whereby the box size can be reduced to save space. Also, if the locking piece of the receiving member protrudes upward from the vicinity of the rim of the box member and projects upward, and the locking piece portion of the lid member does not protrude from the rim of the lid member, when the lid member is removed. Even if the lock member is placed on the ground with its opening side, the lock member does not protrude from the opening edge of the cover member, so that the cover member can be stably mounted and the lock member touches another object and the lock member is damaged. There are various advantages, such as no need to. Therefore,
The present invention greatly contributes to the development of the industry as a lid locking mechanism for boxes which solves the conventional problems.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part showing a preferred embodiment of the present invention.

FIG. 2 is a partially cutaway plan view of a main part showing a preferred embodiment of the present invention in a locked state.

FIG. 3 is a partially cutaway plan view of a main part showing a preferred embodiment of the present invention in a state where a lock is released.

FIG. 4 is a sectional view of a main part showing a conventional example.

FIG. 5 is a partially cutaway plan view of a main part showing a conventional example in a locked state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Box member 2 Base plate 3 Receiving member 5 Inward piece 6 Standing arm part 7 Locking receiving piece 11 Lid member 12 Operating shaft 13 Lock fitting 14 Outward piece 15 Leg piece 16 Lock piece

Claims (2)

(57) [Claims] 1. A cover member (11) for covering an opening of a box member (1) having a base plate (2) attached to an inner bottom surface thereof.
(11) A plate-shaped lock bracket (1
3) is provided and the locking piece (16) formed at the tip thereof is
A lock mechanism for a lid of a box or the like which is locked by engaging with a locking receiving piece (7) formed at the tip of a plate-shaped receiving member (3) provided inside (1). Inward piece (5) protruding from the vicinity of the rim of box member (1) as member (3)
The receiving member (3) is connected to the inner surface of the box member (1) and the base plate (2 ) And a lid member (11) as a lock fitting (13).
An inward locking piece (16) at the tip of an outward piece (14), one end of which is attached to an operation shaft (12) that is rotated by an operation from the front side through a leg piece (15) Base plate using
A lock mechanism for a lid in a box, wherein the upper surface of the side end of (2) can be effectively used without being obstructed by the receiving member (3) and the lock fitting (13). 2. The leg piece (15) has a leg end connected to the lid member (11).
2. The lid locking mechanism according to claim 1, wherein the locking mechanism does not protrude from the edge of the box.