JPH0741045U - Structure to prevent the frame mounting screws of the electrical equipment storage box from falling off - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a structure for preventing a frame mounting screw from falling out of a box for housing an electric device, in which one worker can safely and easily mount the frame. [Structure] The box body 1 is provided with a frame attachment fitting 3 having a screw hole 2 formed on the periphery of the inner opening surface thereof, and the frame 4 is provided with a first screw insertion hole 5 facing the screw hole 2. At the same time, two mounting holes 6 and 6 are formed on both sides of the first screw insertion hole 5, and the locking claws 7 and 7 that are locked to the mounting holes 6 and 6 and the first
Second insertion hole 8 facing the screw insertion hole 5 and the vertical piece 1 for temporarily fixing the frame body mounting screw 9 around the second insertion hole 8.
It is provided with a screw drop prevention tool 11 in which 0, 10, and 10 are formed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a frame body mounting screw dropout prevention structure for a box body for storing electrical equipment, which comprises a box body, a frame body, and a door body, and which fixes the frame body to the box body.

[0002]

[Prior art]

 BACKGROUND OF THE INVENTION Conventionally, a box for storing electric equipment for storing various electric equipment is basically composed of a main body, a frame, and a door, and the frame has a hinge that is rotatable about one side of the door as a spindle. It was fixed to the main body and the door was hinged. In the box for housing the electric device constructed as described above, in order to attach the frame body to the box body, as shown in FIGS. 7 to 9, screw insertion into the upper plate body and the lower plate body of the frame body 21. The holes 22 are provided, and the frame body fittings 25 are attached to the box body 23 at the peripheral edges 24 of the upper and lower side plates. A screw hole 26 is provided in the center of the frame mounting member 25. The screw insertion hole 22 and the screw attachment hole 26 are formed at positions facing each other. To attach the frame body 21 to the box body 23, the frame body 23 is placed so as to cover the frame body 21 from the opening surface direction, and the screw insertion hole 22 and the screw hole 26 are aligned with each other. It was fixed by inserting the mounting screw 27 and tightening it.

[0003]

[Problems to be solved by the device]

 However, in the above-mentioned conventional electrical equipment housing box, when attaching the frame body 21 to the box body 23, the worker first supports the frame body 21 with one hand and attaches the frame body with the other hand. Insert the screw 27 into the screw insertion hole 22 of the frame body 21, temporarily tighten the frame body mounting screw 27 into the screw hole 26 of the box body 23, and then use a tool such as a screwdriver to attach the frame body 21 to the box body 23. Since both hands are blocked, it is extremely difficult to attach the frame body, and the work is dangerous, and if the box body 21 becomes large, the work becomes more difficult, and one person can work. It was difficult to do and it was necessary to work with two or more workers. Further, when the frame body mounting screw 27 is temporarily tightened or after the frame body mounting screw 27 is temporarily tightened, the frame body mounting screw 27 often comes off, which is a disadvantage that the frame body mounting work is very complicated.

Therefore, in the present invention, it is a technical problem to be solved that one worker can safely and easily perform the frame attachment work.

[0005]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the frame attachment screw fall-out prevention structure for a box for storing electrical equipment according to the present invention is provided with a frame body fitting having a screwing hole formed in the box body and surrounding the inner opening surface. The first screw insertion hole facing the screw hole is formed in the frame body, and at least one mounting hole is formed in the vicinity of the first screw insertion hole, and the frame is engaged with the mounting hole. And a second retaining hole facing the first retaining hole and a plurality of uprights for temporarily fixing the frame mounting screw around the second retaining hole. It is provided.

[0006]

[Action]

 When the frame body is attached to the box body, a second screw insertion hole that faces the first screw insertion hole of the frame body is formed, and the frame body is mounted on the screw drop prevention tool provided on the frame body. Push the head of the mounting screw with a tool such as a screwdriver to insert it into the first screw insertion hole of the frame, and screw the frame mounting screw into the screw hole of the box body to move the frame body to the box body. Fix it.

[0007]

【Example】

 An embodiment of a frame attachment screw fall-out prevention structure for a box for housing electrical equipment according to the present invention will be described with reference to the accompanying drawings.

FIG. 1 to FIG. 3 are explanatory views of an embodiment of a frame body mounting screw fall-out prevention structure for a box for storing electrical equipment according to the present invention, in which a box body 1 is provided with a screw hole 2. A frame body mounting bracket 3 is provided on the inner periphery of the inner opening surface, a first screw insertion hole 5 is formed in the frame body 4 so as to face the screw hole 2, and two screws are provided on both sides of the first screw insertion hole 5. The second insertion hole 8 and the second insertion hole which are formed with the attachment holes 6 and 6 and which are opposed to the latch claws 7 and 7 and the first screw insertion hole 5 which are retained by the attachment holes 6 and 6. 8 is provided with a screw drop prevention tool 11 in which standing pieces 10, 10, 10 for temporarily fixing the frame body mounting screw 9 are formed around 8.

When the frame body 4 is attached to the box body 1 as shown in FIGS. 2 and 3, the frame body 4 is mounted between the locking claws 7 of the screw drop prevention tool 11 as shown in FIG. The mounting position to the box body 1 is set by sandwiching 3 and the second screw insertion hole 8 facing the first screw insertion hole 5 of the frame body 4 is formed and the screw provided in the frame body 4 is formed. The head portion 9a of the frame body mounting screw 9 mounted on the fall prevention tool 11 is pushed by the driver 12 and inserted into the second insertion hole 8 and the first screw insertion hole 5 of the frame body 4 to mount the frame body. The frame body 4 is fixed to the box body 1 by screwing the screws 9 into the screw holes 2 of the box body 1.

In the frame body mounting screw drop-out prevention structure of the electrical equipment housing box configured as described above, the frame body 4 is provided with the screw drop-out prevention tool 11, and the screw drop-out prevention tool 11 is attached to the frame body mounting screw 9 As a result, since the frame body mounting screw 9 is not removed when the frame body 4 is mounted on the box body 1, the operator can safely and easily carry out the frame body mounting work. That is.

FIG. 4 to FIG. 6 are explanatory views of a modified embodiment of the frame attachment screw fall-out prevention structure of the box for storing electrical equipment according to the present invention, in which the standing pieces 10 and 10 of FIG. By extending to the back surface, it can be used as a shock absorber when closing the door body 13.

Further, in the above embodiment, the frame body 4 is provided with the two mounting holes 6 and 6, but the number of the mounting holes 6 is not limited to this, and for example, as shown in FIGS. As described above, one mounting hole 16 is formed in the vicinity of the first screw insertion hole 15 of the frame body 14, and the screw drop prevention tool 17 forms a hook claw 18 hooked in the mounting hole 16 and It is also possible to form a hook claw 20 that hooks from the lower part of the second screw insertion hole 19 to the opening edge portion of the first screw insertion hole 15.

Further, as the hooks 18 and 20 of FIGS. 5 and 6 have different shapes from the hooks 7 of FIG. 1, the structure and shape of other parts are also the object of the present invention. Modifications can be made as appropriate within the range not departing from.

[0014]

[Effect of device]

 As described above, according to the present invention, the frame mounting screw drop-preventing structure for the electrical equipment housing box has the frame body mounting metal fittings having the screw holes formed in the box body at the periphery of the inner opening surface, A first screw insertion hole is formed in the frame so as to face the screw hole, and at least one mounting hole is formed in the vicinity of the first screw insertion hole. Provided with a second insertion hole facing the claw and the first screw insertion hole, and a screw drop prevention device formed with a plurality of uprights around the second insertion hole for temporarily fixing the frame mounting screw. Since the frame attachment screws are mounted on the screw removal prevention tool provided on the frame, the frame attachment screws do not fall off, and one worker can safely and easily perform the frame attachment work. It has an excellent effect that

[Brief description of drawings]

FIG. 1 is an explanatory view of an embodiment of a frame body mounting screw dropout prevention structure of a box for housing an electric device according to the present invention.

FIG. 2 is an explanatory view of an embodiment of a frame body mounting screw dropout prevention structure of a box for housing an electric device according to the present invention.

FIG. 3 is an explanatory view of an embodiment of a frame body mounting screw dropout prevention structure of a box for housing an electric device according to the present invention.

FIG. 4 is an explanatory view of a modified example of the frame attachment screw dropout prevention structure of the box for housing an electric device according to the present invention.

FIG. 5 is an explanatory view of a modified embodiment of the frame attachment screw fall-out prevention structure of the electrical equipment housing box according to the present invention.

FIG. 6 is an explanatory view of a modified embodiment of the frame attachment screw dropout prevention structure of the box for housing an electric device according to the present invention.

FIG. 7 is an explanatory diagram of a frame body mounting structure of a box body for storing an electric device according to a conventional technique.

FIG. 8 is an explanatory view of a frame attachment structure of a box for storing an electric device according to a conventional technique.

FIG. 9 is an explanatory diagram of a frame body mounting structure of a box body for storing an electric device according to a conventional technique.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Box body, 2 ... Screw-in hole, 3 ... Frame mounting bracket, 4 ... Frame body, 5 ... 1st screw insertion hole, 6 ...
..Mounting holes, 7 ... Latching claws, 8 ... Second screw insertion holes, 9 ... Frame mounting screws, 9a ... Head, 10 ...
・ Standing piece, 11 ... Screw fall prevention tool, 12 ... Driver, 13 ... Door body, 14 ... Frame body, 15 ... First
Screw insertion hole, 16 ... Mounting hole, 17 ... Screw fall prevention tool, 18 ... Locking claw, 19 ... Second screw insertion hole, 20 ... Locking claw.

Claims (1)

[Scope of utility model registration request] 1. A frame body mounting screw dropout prevention structure for a box body for storing electrical equipment, comprising a box body, a frame body, and a door body, and fixing the frame body to the box body, the box comprising: A frame mounting bracket having a screw hole is provided on the body body at the periphery of the inner opening surface, a first screw insertion hole facing the screw hole is formed in the frame, and the first screw is provided. At least one attachment hole is formed in the vicinity of the insertion hole, and a latch claw that is retained in the attachment hole, a second insertion hole facing the first screw insertion hole, and the periphery of the second insertion hole. A frame attachment screw fall prevention structure for a box for storing electrical equipment, characterized in that a screw fall prevention tool formed with a plurality of vertical pieces for temporarily fixing the frame body attachment screw is provided.