JPH0311450Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a structure for attaching members to be fastened in equipment used in electrical equipment and the like.

[Conventional technology]

FIG. 6 is a perspective view of a conventional fastening type grounding terminal fastened to an electric motor as a conventional mounting structure for fastened members, FIG. 7 is a side view thereof, and FIG. 8 is an exploded perspective view of a conventional fastening type grounding terminal. FIG. 9 is a rear perspective view of the fastening fitting shown in FIG. 8. In FIGS. 6 to 9, 11 is an electric motor as an example of equipment, and 12 is
A bolt hole 12a and an arcuate groove 1 on the upper side are provided in the plate-like member.
2b, a hole 12c is formed with the groove 12b, and a bolt portion 12d is vertically disposed at the top of the grounding terminal body as a fastened body; 13 is a main fastener whose threaded portion is inserted into the hole 12a; A bolt, 14 is a ground wire as a member to be fastened, 15 is a nut as an auxiliary fastener screwed onto the bolt portion 12d, and 16 is a recessed portion having a hole 16a in the center through which the bolt portion 12d is inserted, and projections on the four corners. 17 is a screw hole provided in the electric motor 11; be.

Connect the above-mentioned grounding wire 4 to the motor 11 using a clamp type grounding terminal.
This section explains how to install it. Bolt screw hole 1
7 with the bolt hole 12a of the ground terminal main body 12 and tighten with the bolt 13 to attach the ground terminal main body 12 to the electric motor 11. Insert the end of the ground wire 14 into the hole 12c, and in this state, insert the bolt part 12d into the hole 16a of the fastening fitting 16, and insert the fastening fitting 16 so that the groove 16c is in contact with the grounding wire 14. , and attach the nut 15 to the bolt part 12.
d, and by tightening the nut 15, the clamping fitting 16 presses the grounding wire 14, thereby grounding the electric motor 11.

[Problem that the invention attempts to solve]

The mounting structure of the fastened members in conventional equipment is configured as described above, so there is no problem in normal installation locations, but if the electrical machine is installed in a high place, bolts, nuts, etc. If fasteners are loosened and there is a danger that they may fall out,
In addition, electrical equipment is installed directly above the fuel loading area in the nuclear power plant, and fasteners such as bolts and nuts are likely to fall off, making it difficult to deal with the possibility of an accident occurring if they fall off. There was a problem.

This idea was made to solve the above problems, and has a simple structure that prevents the fasteners from falling off by regulating the movement of the fasteners using a specially shaped regulating member. The purpose of the present invention is to obtain a mounting structure for fastened members in equipment that can prevent accidents from occurring.

[Means for solving problems]

The mounting structure of the fastened member in the device according to this invention is such that a bolt hole is provided at one end, a bolt part is integrally provided vertically at the upper part of the other end, and the lower end of the bolt part is provided with a bolt hole to be fastened. A fastened body having a member insertion hole provided at right angles to the bolt portion, a main fastening bolt that is inserted into the bolt hole to fasten the fastened body to the device, and inserted into the bolt portion. By screwing the tightening fittings into the bolt portion and tightening the tightening fittings,
A lower plate portion having a hole in a mounting structure for a member to be fastened in a device including a sub-fastening nut for fastening the member to be fastened inserted through the insertion hole to the main body to be fastened via the fastening fitting. , a rising plate portion bent upward from one end of the lower plate portion at a substantially right angle, and an upper plate portion bent from the upper end of the rising plate portion at a substantially right angle to the opposite side of the lower plate portion. A regulating member is provided, and when the main fastening bolt inserted into the hole in the lower plate of the regulating member is used to fasten the main body to the device, the lower plate is tightened together. While fastening to the main body to be fastened,
The upper plate part is placed directly above the auxiliary fastening nut, and a part of the lower plate part or a part of the tongue washer that is overlapped and fastened to the lower plate part is folded upward at a substantially right angle. Bend it and bring it into contact with the side surface of the head of the main fastening bolt to prevent the main fastening bolt from loosening,
The upper plate portion is configured to prevent the auxiliary fastening nut from falling off from the bolt portion.

[Effect]

In the regulating member in this invention, the lower plate part or the tongued washer overlaid thereon and co-tightened prevents the main fastening bolt from loosening, and the upper plate part prevents the sub-fastening nut from falling off.

〔Example〕

An embodiment of this invention will be described below with reference to the drawings. Figures 1 to 4 show an embodiment of this invention; the first shows a state in which a clamping type grounding terminal with a drop-off prevention device having a structure for attaching a member to be fastened in a device of this invention is attached to an electric motor; Fig. 2 shows the grounding terminal in Fig. 1 viewed from above, Fig. 3 shows its side view, and Fig. 4 shows the drop-off prevention fitting alone as seen diagonally. In , the same reference numerals as in the conventional example indicate the same parts, and 1 is a fall prevention fitting as a regulating member, which has the same function as a tongued washer and has a hole 1a through which the thread of the bolt 13 is inserted. portion 1b, and a rising plate portion 1c formed by bending upward in a substantially perpendicular state from the edge of the lower plate portion 1b.
and an upper plate part 1d formed by bending the rising plate part 1c at a substantially vertical angle to the opposite side to the upper side of the lower plate part 1b, and the substantially L-shaped plates are arranged side by side in opposite directions. It has the shape of a connected metal plate and is made of a single metal plate.

As shown in FIG. 1, a case will be described in which a grounding terminal with a drop-off prevention fitting having a structure for attaching members to be fastened in a device of this invention is attached to an electric motor 11. First, the ground wire 14 is pressed into contact with the nut 15 and the clamp 16 using the nut 15, the clamp 16, the ground terminal main body 12, and the ground wire 14, and is attached to the ground terminal main body 12. Next, align the hole 1a and the bolt hole 12a and insert the bolt 13,
The ground terminal main body 12 and the falling-off prevention fitting 1 are attached to the electric motor 11 by screwing the bolt 13 into the bolt screw hole 17 of the electric motor 11. However, at this time, the attachment is performed so that the upper plate part 1d of the falling-off prevention fitting 1 is placed directly above the bolt part 12d.

Next, the lower plate part 1b is bent at a substantially right angle along one side of the bolt head of the bolt 13, and brought into contact therewith. Thereafter, if the ground wire 14 is not tightened enough, the nut 15 is rotated with a jig and the ground wire 14 is further tightened.

Here, after fastening, if the distance between the lower surface of the upper plate part 1d and the top of the bolt part 12d is L, and the width of the nut is T, the upper plate part 1d is positioned such that L<T. Therefore, even if the nut 15 becomes loose, the loosening is restricted by the upper plate part 1d of the falling-off prevention fitting 1, and the nut 15 will not come off and fall off from the bolt part 12d.

Further, since the lower plate portion 1b is bent at a substantially right angle along one side of the bolt head of the bolt 13, the bolt 13 also does not loosen and is prevented from falling off.

To tighten the grounding wire 14 with the nut 15, before attaching the grounding terminal main body 12 and fall prevention fitting 1 to the motor 11 using the bolt 13, insert the tightening fitting 16 into the bolt portion 12d and then tighten the nut 15. After screwing together, the grounding wire 14 may be finally attached by tightening the nut 15.

FIG. 5 shows another embodiment of this invention, in which a tongue washer 2 is interposed between the fall prevention fitting 1 and the bolt 13, and the bolt 13 is fastened in the same manner as described above, and the bolt 13 is fastened along one side of the bolt head. In addition, the tongued portion of the washer 2 may be bent at a substantially right angle to prevent the bolt 13 from falling off.

In the above embodiment, the falling-off prevention fitting 1 is made of metal, but it may also be made of plastic, ceramic, or the like.

[Effect of idea]

As described above, according to this invention, a bolt hole is provided at one end, a bolt part is provided vertically and integrally at the upper part of the other end, and the member to be fastened is inserted into the lower end of the bolt part. A fastened body having a through hole provided at right angles to the bolt portion, a main fastening bolt that is inserted into the bolt hole and fastens the fastened body to a device, and a tightening bolt inserted into the bolt portion. and a sub-fastening nut that is screwed onto the bolt portion and fastens the tightening fitting to thereby fasten the fastened member inserted through the insertion hole to the fastened main body via the tightening fitting. In the mounting structure of a member to be fastened in a device comprising: a lower plate portion having a hole; a rising plate portion bent upward at a substantially right angle from one end of the lower plate portion; A regulating member consisting of an upper plate portion bent at a substantially right angle on the opposite side to the lower plate portion is used, and the main fastening bolt inserted through the hole in the lower plate portion of the regulating member When fastening the fastening body to the device, the lower plate part is jointly fastened to the fastened body, the upper plate part is placed directly above the sub-fastening nut, and the lower plate part or a part of the tongued washer that is overlapped and fastened to the lower plate part is bent upward at a substantially right angle and brought into contact with the side surface of the head of the main fastening bolt, and the main fastening is performed. Since the upper plate part prevents the sub-fastening nut from falling off from the bolt part, the member to be fastened will be damaged by the falling of the sub-fastening nut from the main body. The simple structure of the regulating member has the effect of preventing accidents such as the main fastening bolt loosening and the entire fastened body falling off from the device.

[Brief explanation of the drawing]

Fig. 1 is an external view of this invention applied to an electric motor, Fig. 2 is a plan view of an embodiment of this invention, Fig. 3 is a front view, and Fig. 4 is a fall prevention bracket used in this invention. 5 is a plan view showing another embodiment of the invention, FIG. 6 is an external view of the conventional terminal applied to an electric motor, and FIG. 7 is a front view of the conventional example. FIG. 8 is an exploded perspective view of a conventional example, and FIG. 9 is a rear perspective view of a fastening fitting used in the conventional example. 1 is a fall prevention fitting (regulating member), 1a is a hole, 1
b is the lower plate part, 1e is the rising plate part, 1d is the upper plate part,
2 is a washer with a tongue, 11 is an electric motor, 12 is a grounding terminal body (main body to be fastened), 12a is a bolt hole, 12d
is a bolt part, 12c is a hole (hole for insertion of a fastened member), 13 is a bolt (main fastening bolt), 14 is a ground wire (fastened member), 15 is a nut (sub-fastened nut), 16 is a tightening bolt Metal fittings. In the figure, the same symbols are
Indicates the same or equivalent part.

Claims (1)

[Scope of utility model registration request] A bolt hole is provided on one end side, a bolt part is provided vertically and integrally in the upper part of the other end side, and a hole for insertion of a member to be fastened is provided at the lower end of the bolt part at right angles to the bolt part. a main fastening bolt inserted into the bolt hole to fasten the fastened main body to the device; a tightening fitting inserted into the bolt portion; Attachment of a fastened member in a device including a sub-fastening nut that fastens the fastened member inserted through the insertion hole to the fastened main body via the fastening metal fitting by fastening the fastening metal fitting. In the structure, a lower plate part having a hole, a rising plate part bent upward at a substantially right angle from one end of the lower plate part, and a rising plate part bent at a substantially right angle from the upper end of the rising plate part to the opposite side of the lower plate part. A regulating member consisting of an upper plate portion bent in a direction is provided, and when the main fastening bolt is inserted into a hole in the lower plate portion of the regulating member to fasten the main body to be fastened to the device, The lower plate portions are jointly tightened to the main body to be fastened, and the upper plate portion is placed directly above the sub-fastening nut, and the upper plate portion is partially or overlapped with the lower plate portion. A part of the tongue washer that was tightened together is bent upward at a substantially right angle and brought into contact with the side surface of the head of the main fastening bolt,
A mounting structure for a member to be fastened in a device, characterized in that the main fastening bolt is prevented from loosening, and the upper plate part prevents the sub-fastening nut from falling off from the bolt part.