JPH08277826A - Structure for mounting hanger bolt with square root - Google Patents

Abstract

PURPOSE: To perform simply an apparatus hanging operation in a short time by preventing a hanger bolt from being pressed-in by a nut to be rotated together therewith so that the nut can be surely screwed onto the hanger bolt when the nut is screwed onto the hanger bolt mounted on a rail for hanging the apparatus. CONSTITUTION: A head 2c and square root 2b of a hanger bolt 2 are inserted into an opening 1b of an apparatus hanging rail 1 to be received in a T-shaped groove 1a of the apparatus hanging rail 1. The hanger bolt 2 is rotated by 90 deg. while being drawn back to the inserting side so that the square root 2b is fitted in the opening 1b and the head 2c is supported by the inner surface of lip parts 1c, 1c of the apparatus hanging rail 1. A press-in preventing retainer 3 is attached from the side of the hanger bolt 2, and a press-in preventing piece 3b of the retainer 3 is disposed between the head 2c and the inner surface 1d of the T-shaped groove 1a of the apparatus hanging rail 1. A gap C1 between the head 2c and the inner surface 1d of the T-shaped groove 1a is filled with the thrust preventing piece 3b to prevent the square root 2b from being drawn out of the opening 1b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting bolt for a mounting bolt having a square root when mounting a device or a device arranged under the floor of a vehicle, etc., to a rail for hanging a device with a hanging bolt having a square root.

[0002]

2. Description of the Related Art When installing underfloor equipment on a vehicle,
A device mounting rail having a T-shaped groove at the bottom of the underframe is arranged with the opening of the T-shaped groove facing downward or sideways, and is inserted into the T-shaped groove and fixed to the device hanging rail. There is known a structure for mounting devices by using. The suspension bolt in this device mounting structure is a suspension bolt with a square root, which includes a rotation-preventing square root portion having a square cross section at the base end of a shaft portion and a head having a rectangular cross section following the square root portion. Used, the head portion and the square root portion of the hanging bolt are deeply inserted from the opening of the T-shaped groove of the equipment suspension rail to the inside of the T-shaped groove, and rotated by 90 degrees to pull back. It fits between both lip portions of the opening of the groove to prevent rotation, and the head is supported on the inner surface of the lip portion. Then, the hanging bolt is slid and set according to the device mounting position. Next, insert the shaft part of the hanging bolt protruding from the opening of the equipment hanging rail into the bolt hole of the mounting equipment, clamp the washer, and tighten it with a nut to suspend the hanging bolt and the equipment. Fasten together with the rail.

At this time, both ends of the head of the suspension bolt, which extend from opposite sides of the square root of the suspension bolt, are caught on the inner surface of the lip portion of the equipment suspension rail so that a reaction force for nut tightening can be obtained. . Further, since the outer surface of the square root portion abuts the facing surfaces of both lip portions to prevent the rotation of the suspension bolt, it is possible to tighten the nut without pressing the suspension bolt head with a spanner or the like. .

[0004]

In such a structure, when the suspension bolt is assembled, the square root is once deeply housed in the T-shaped groove of the equipment suspension rail and rotated 90 degrees before being suspended. Since the bolt is pulled back to engage the square root portion between the lip portions, a gap is created between the head portion of the hanging bolt and the inner surface of the T-shaped groove facing the head portion of the hanging bolt by this pulled back portion.

For this reason, when suspending the equipment, the suspension bolt is pushed in when the suspension bolt is inserted into the bolt hole of the equipment, or the nut is tightened by using an electric tool or the like. At that time, it is easy to push the suspension bolt together with the nut into the T-shaped groove, the square root portion of the suspension bolt comes out from between the lip portions into the T-shaped groove, and the anti-rotation effect is lost, and the suspension bolt rotates together with the nut. Therefore, it may be difficult to attach the devices.

Therefore, the present invention effectively prevents co-rotation of a bolt with a square root used as a hanging bolt of equipment and allows various kinds of equipment to be easily mounted in a short time by a mounting structure of a hanging bolt with a square root. Is intended to provide.

[0007]

According to the above object,
According to the present invention, the head portion and the corner root portion of the suspension bolt are inserted from the opening of the T-shaped groove of the equipment suspension rail to mount the suspension bolt at 90 degrees.
In a mounting structure of a hanging bolt with a square root that rotates and pulls back to fit the square root portion between both lip portions of the opening portion to mount the hanging bolt and prevent rotation, a T-shape of the equipment hanging rail. A retainer for preventing the pushing of the hanging bolt is arranged in a gap between the head of the hanging bolt inserted in the groove and the inner surface of the T-shaped groove facing the head of the hanging bolt. .

[0008]

[Operation] According to this configuration, the gap between the head of the suspension bolt and the equipment suspension rail is filled with the push-in prevention retainer. Therefore, when inserting the suspension bolt into the bolt hole of the equipment to be mounted, or the nut. Even when tightened, the hanging bolt can be prevented from being pushed in, and the engagement between the square root portion of the hanging bolt and the surface of the equipment hanging rail facing the lip portion can be held to prevent the hanging bolt from idling.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show a first embodiment of the present invention. For example, when equipment is installed under the floor of a vehicle (not shown), an equipment suspension rail 1 having a T-shaped groove 1a at the bottom of an underframe. Is attached with the opening 1b of the T-shaped groove 1a facing downward. Then, from the opening 1b of the T-shaped groove 1a, the hanging bolts 2 with square roots are respectively inserted in predetermined positions at predetermined positions, turned 90 degrees and pulled back, and set on the equipment hanging rail 1 in a state in which rotation is prevented. , At that time, the push-in prevention retainer 3 has the opening 1 of the equipment suspension rail 1.
It is attached from the side of the hanging bolt 2 along b.

Equipment suspension rail 1 having a T-shaped groove 1a
Is an aluminum extruded mold material, and the lip portions 1c, 1
The opening 1b between c is provided over the entire length.

The hanging bolt 2 is a shaft portion 2 which is threaded.
Square root section 2b with a square cross section at the base end of a
Is provided with a head portion 2c following the corner root portion 2b. The head 2c is formed in a rectangular shape having the same width W1 as the corner root 2b and a length L1 longer than that, and the four corners of the head 2c are inside the T-shaped groove 1a of the equipment suspension rail 1. An arcuate chamfer is applied for easy rotation. It should be noted that, as the difference between the length L1 and the width W1 of the head portion 2c, both end portions such as a brim that protrudes from the corner root portion 2b to both sides have the equipment suspension rail 1
It is locked to the inner surfaces of the lip portions 1c, 1c and receives the tightening reaction force of the nut 4 when mounting the devices.

The retainer 3 for preventing push-in is mounted on the mounting portion 3a from the side of the head 2c of the hanging bolt 2 from the side.
And a push-in prevention piece 3b for preventing the square root 2b from slipping out of the lips 1c, 1c above the head 2c of the hanging bolt 2, and the T-shape of the equipment hanging rail 1 is mounted. Head 2c of the hanging bolt 2 inserted in the groove 1a
The push-in prevention piece 3b is arranged in the space C1 between the inner surface 1d of the T-shaped groove 1a and the head portion 2c.

The retainer 3 comprises a mounting portion 3a and a push-in prevention piece 3b, and the mounting portion 3a has a U-shaped cross section by an upper piece 3c, a lower piece 3d and a side piece 3e connecting these side ends. The push-in prevention piece 3b is formed by bending outward from the tip of the upper piece 3c at a right angle.

The lower piece 3d of the mounting portion 3a projects longer than the upper piece 3c, and a pair of sandwiching pieces 3f and 3f are formed by cutting in from the center of the tip of the lower piece 3d to the vicinity of the end. The tips of the sandwiching pieces 3f, 3f are each slightly bent toward the upper side to form locking claws 3g, 3g for preventing slipping out.

The width W2 of the mounting portion 3a is slightly narrower than the width W3 of the opening 1b between the lip portions 1c and 1c of the equipment suspension rail 1, and the push-in preventing retainer 3 is moved from the opening 1b to the equipment. The suspension rail 1 can be inserted into the T-shaped groove 1a. Further, the interval C2 between the upper piece 3c and the lower piece 3d is formed to be substantially equal to the thickness T1 of the hanging bolt 2 so as to sandwich the head portion 2c and the corner root portion 2b together. , 3f is slightly wider than the diameter D1 of the shaft portion 2a of the suspension bolt 2.

The push-in preventing piece 3b is provided when the push-in preventing retainer 3 is attached to the hanging bolt 2.
Head 2c and inner surface 1 of T-shaped groove 1a of equipment suspension rail 1
It is arranged in a gap C1 with d, and is a push-in prevention piece 3
The length L2 of b is the inner surface 1 of the bolt head 2c and the T-shaped groove 1a.
It is formed to be a little shorter than the gap C1 between the head 2c and the inner surface 1d of the T-shaped groove 1a so as not to interfere with d.
The gap C4 generated between the inner surface 1d of the die groove 1a and the upper end of the push-in prevention piece 3b is set to be smaller than the thickness T2 of the square root portion 2b of the hanging bolt 2, so that the hanging bolt can be used when installing underfloor equipment. Even if 2 and the push-in preventive retainer 3 are pushed together by the gap C4, the square root portion 2b of the hanging bolt 2 is prevented from coming out of the opening 1b of the equipment hanging rail 1.

This embodiment is constructed as described above,
To attach the suspension bolt 2 to the equipment suspension rail 1,
First, the head portion 2c and the square root portion 2b of the suspension bolt 2 are inserted from the opening portion 1b of the equipment suspension rail 1 to temporarily house the head portion 2c and the square root portion 2b in the inner portion of the T-shaped groove 1a. Then, the hanging bolt 2 is pulled back while rotating 90 degrees, the square root portion 2b is fitted into the opening portion 1b between the lip portions 1c, 1c, and both ends of the head portion 2c are supported on the inner surfaces of the lip portions 1c, 1c. Then, the shaft portion 2a is projected from the opening portion 1b. By lowering the suspension bolt 2, a gap C is formed between the head 2c of the bolt 2 and the inner surface 1d of the T-shaped groove 1a of the equipment suspension rail 1.
1 is set.

Next, while the push-in preventing piece 3b of the push-in preventing retainer 3 is directed upward and the locking claws 3g, 3g are directed toward the bolt side, the push-in preventing retainer 3 is opened from the opening 1b of the equipment suspension rail 1. The retainer 3 is housed in the T-shaped groove 1a, and the retainer 3 is slid from the side portion of the hanging bolt 2 to the head portion 2c side of the hanging bolt 2 so as to sandwich the upper piece 3c and the lower piece 3d of the mounting portion 3a. The head portion 2c and the square root portion 2b of the suspension bolt 2 are sandwiched between and, and the push-in prevention retainer 3 is attached to the suspension bolt 2 by a spring action.

By mounting the push-in prevention retainer 3, the push-in prevention piece 3b is housed between the head 2c of the suspension bolt 2 and the inner surface 1d of the T-shaped groove 1a of the equipment suspension rail 1 and is separated from the head 2c. The void C1 between the inner surfaces 1d of the T-shaped grooves 1a is substantially filled. Further, the locking claws 3g, 3g of the push-in prevention retainer 3 attached to the suspension bolt 2 abut the side surface of the corner root portion 2b to effectively prevent the retainer 3 from falling off.

The opening 1b of the equipment suspension rail 1
The shaft portion 2a of the hanging bolt 2 protruding from is inserted into the bolt hole 5a of the frame 5 of the equipment, and the nut 4 is tightened with the flat washer 6 and the spring washer 7 sandwiched therebetween. At this time, an upward biasing force acts on the hanging bolt 2 when the nut 4 is screwed in. However, the hanging bolt 2 does not have the push-in prevention piece 3b.
Although the gap C4 left between the upper end of the T-shaped groove 1 and the inner surface 1d of the T-shaped groove 1a of the equipment suspension rail 1 is slightly pushed in and floats up, the push-in prevention piece 3b is further pushed to the T-shaped groove 1.
Since the contact with the inner surface 1d of a and restricts the lifting by pushing, the corner root portion 2b does not slip out of the opening portion 1b, and the nut 4 can be screwed in without rotating the hanging bolt 2 together.

The frame 5 has washers 6, 7 between the device suspension rail 1 and the nut 4 when the nut 4 is screwed.
It is clamped via the, and various devices are suspended under the floor of the vehicle. In addition, a split pin (not shown) is inserted into the split pin hole 2d of the hanging bolt 2, and the washers 6, 7 and the nut 4 are inserted.
Surely prevent loosening and dropping.

Next, second to fourth embodiments of the present invention will be described. In each of these embodiments, the same components as those in the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted.

FIGS. 4 and 5 show a second embodiment of the present invention, in which the push-in preventing retainer 10 has a semi-circular elastic portion 1.
One of the pair of opposing pieces connected to 0a serves as an abutting piece 10b and the other serves as a holding piece 10c.
It has a shape in which a knob piece 10d which is bent outward is extended at the outer end of the. Further, in the free state in which the compressive force does not act on the push-in preventing retainer 10, the contact piece 10b and the pressing piece 1 are
The distance from 0c is set wider than the gap C1 between the head 2c of the suspension bolt 2 and the inner surface 1d of the T-shaped groove 1a of the equipment suspension rail 1.

The push-in preventive retainer 10 described above holds the knob 10d and turns the elastic portion 10a from one side of the hanging bolt 2 mounted at a predetermined position of the equipment hanging rail 1 toward the hanging bolt side. , Is inserted into the T-shaped groove 1a through the opening 1b. While contacting the contact piece 10b with the inner surface 1d of the T-shaped groove 1a of the equipment suspension rail 1,
The push-in prevention retainer 10 is slid toward the hanging bolt, and the elastic portion 10a is inserted while being compressed between the head portion 2c of the hanging bolt 2 and the inner surface 1d of the T-shaped groove 1a of the equipment hanging rail 1, Further, by projecting the elastic portion 10a to the other side of the hanging bolt 2 and positioning the pressing piece 10c on the upper surface of the head 2c of the hanging bolt 2, the elastic portion 1a is formed.
0a, the abutment piece 10b and the pressing piece 10c, which are inserted into the T-shaped groove 1a of the equipment suspension rail 1, and the suspension bolt 2
It is arranged in a space C1 between the head portion 2c and the inner surface 1d of the T-shaped groove 1a facing the head portion 2c.

An abutting piece 1 opposed between the head portion 2c of the hanging bolt 2 and the inner surface 1d of the T-shaped groove 1a of the equipment hanging rail 1.
The elastic force from the elastic portion 10a acts on the 0b and the pressing piece 10c in the opening direction, so that the lifting bolt 2 is prevented from being lifted up. In addition, retainer 1 to prevent pushing
0 is an elastic portion 10a that bulges larger than the gap C1 between the bolt head 2c and the inner surface 1d of the T-shaped groove 1a on the other side of the hanging bolt 2 and a knob 10d that curves toward the opening 1b. Since the head portion 2c of the second rail 2 is wrapped from both sides, the head portion 2c is prevented from falling off, and the gripping piece 10d is attached to the equipment suspension rail 1
Since it is located in the opening 1b and comes into contact with the facing surfaces of the lip portions 1c, 1c, unnecessary backlash is prevented.

FIGS. 6 and 7 show a third embodiment of the present invention, in which the push-in preventing retainer 20 is provided with the pressing piece 2 facing each other.
0a and the abutting piece 20b, a semi-circular elastic portion 20c that connects them, and a pair of sandwiching pieces 20d and 20e that project outward at right angles from both outer ends of the holding piece 20a.

The distance between the pressing piece 20a and the contact piece 20b in the free state is the same as in the second embodiment, that is, the head portion 2 of the hanging bolt 2.
It is set to be wider than the space C1 between c and the inner surface 1d of the T-shaped groove 1a of the equipment suspension rail 1. Further, the one sandwiching piece 20d projects longer than the other sandwiching piece 20e, and the interval C5 between the two sandwiching pieces 20d and 20e is the same as or slightly larger than the width W1 of the head 2c of the hanging bolt 2. It is set long.

The push-in preventing retainer 20 picks up the longer clip 20d and suspends the shorter clip 20e from one side of the suspension bolt 2 mounted at a predetermined position of the equipment suspension rail 1. While facing the bolt side, the opening 1b
Through the T-shaped groove 1a. Next, the contact piece 20
While the b is brought into contact with the inner surface 1d of the T-shaped groove 1a of the equipment suspension rail 1, the push-in prevention retainer 20 is slid in the suspension bolt direction, and the shorter sandwiching piece 20e is attached to the head 2c of the suspension bolt 2. Once contacted to one side, elastic portion 20c
The upper end of the hanging bolt 2 on the upper surface of the head 2c of the hanging bolt 2 by sliding the retainer 20 toward the hanging bolt while compressing the upper part of the hanging bolt 2 upward.
Head 2c and inner surface 1 of T-shaped groove 1a of equipment suspension rail 1
Insert it with d. And the longer clip 2
When 0d contacts one side surface of the head 2c of the suspension bolt 2,
The shorter sandwiching piece 20e projects to the other side of the hanging bolt 2, the sandwiching piece 20e falls to the other side surface of the head 2c of the hanging bolt 2 by the elastic force of the elastic portion 20c, and the holding piece 20a is suspended. Head 2c of the suspension bolt 2 inserted into the T-shaped groove 1a of the equipment suspension rail 1 with the pressing piece 20a, the abutment piece 20b and the elastic portion 20c abutting on the upper surface of the head 2c of the second head 2c. Inner surface 1 of the T-shaped groove 1a facing the portion 2c
It is arranged in a space C1 between the space d and d.

The suspension bolt 2 is prevented from being lifted up by being pushed by the holding piece 20a and the contact piece 20b of the push-in preventing retainer 20 in which the elastic force of the elastic portion 20c acts in the opening direction. In addition, retainer 2 for prevention of pushing
0 itself sandwiches both side surfaces of the bolt head 2c of the suspension bolt 2 with the pieces 20d and 20e sandwiched between them to prevent the drop, and
The longer sandwiching piece 20d is the opening 1 of the equipment suspension rail 1.
Since it is located at b and comes into contact with the facing surface of the lip portion 1c, unnecessary backlash is effectively prevented.

The push-in preventive retainer 30 of the fourth embodiment shown in FIGS. 8 and 9 comprises a push-in preventing portion 30a protruding in a hairpin shape and both ends of the push-in preventing portion 30a.
A pair of holding portions 30b, 30c that are bent to the front while widely projecting, and an L-shaped lock that protrudes forward from the tip of one of the holding portions 30b and is bent at a right angle toward the other holding portion 30c. It consists of a piece 30d. The push-in prevention portion 30a is provided so as to be offset toward one of the holding portions 30b, and the push-in prevention retainer 30 is attached to the hanging bolt 2.
The push-in prevention portion 30a is prevented from interfering with the inner surface 1d of the T-shaped groove 1a of the equipment suspension rail 1 as much as possible when it is mounted on the head 2c of the device.

The interval C6 between the two holding portions 30b and 30c is set to be slightly shorter than the width W1 of the bolt head 2c in the free state before the suspension bolt 2 is attached to the head 2c. Further, the distance C7 between the one holding portion 30b and the tip of the locking piece 30d is equal to the head portion 2c and the corner root portion 2 of the hanging bolt 2.
The thickness is set to be substantially the same as the thickness T1 of b. further,
The push-in preventing retainer 30 is formed of a plate material having elasticity such as a spring plate, and is wrapped around the hanging bolt 2 tilted in the equipment hanging rail 1 or the hanging bolt 2 set at a predetermined position of the rail 1. Head part 2 with holding parts 30b and 30c
The lateral width of c is sandwiched, and the head portion 2c and the square root portion 2b are integrally sandwiched and mounted by the one holding portion 30b and the tip of the locking piece 30d.

Retainer 3 for preventing it from being pushed into the hanging bolt 2.
When mounting 0, the head portion 2c and the corner root portion 2b of the suspension bolt 2 are inserted into the T-shaped groove 1a from the opening portion 1c of the equipment suspension rail 1 and rotated 90 degrees, and then the suspension bolt 2 is rotated. 2 is pulled back toward the opening 1c and set at a predetermined position of the equipment hanging rail 1 shown by the solid line in FIG. Next, while holding the one holding portion 30b or the locking piece 30d, the retainer 30 is turned from one side portion which is the head side of the hanging bolt 2 to the other holding portion 30c toward the hanging bolt side, Opening 1
While inserting into the T-shaped groove 1a through b and inserting the tip of the locking piece 30d into the lower surface of the square root portion 2b of the hanging bolt 2,
When the lower end of the other holding portion 30c is placed on the upper surface of the head 2c of the hanging bolt 2 and the push-in prevention portion 30a is pushed in, the other holding portion 30c expands the push-in prevention portion 30a and the hanging bolt 2 of the hanging bolt 2 is pushed. Sliding on the upper surface of the head 2c toward the other side surface, the holding portion 30c falls to the other side of the head 2c,
Both of the holding portions 30b and 30c hold the head portion 2c, and the one holding portion 30b and the tip of the locking piece 30d hold the head portion 2c and the corner root portion 2b together to prevent pushing. The retainer 30 is attached to the hanging bolt 2.

In the case of the present embodiment, as shown by the imaginary line in FIG. 8, after mounting the push-in prevention retainer 30 with the hanging bolt 2 tilted, the hanging bolt 2 is returned in the vertical direction, It can also be mounted at a predetermined position on the equipment suspension rail 1.

By mounting the push-in preventing retainer 30 as described above, the push-in preventing portion 30a of the retainer 30 is mounted.
Is a head 2c of a hanging bolt 2 inserted in a T-shaped groove 1a of a device suspension rail 1 and a T-shaped groove 1 facing the head 2c.
It is arranged in the space C1 between the inner surface 1d of a and the space C1 between the head 2c and the inner surface 1d of the T-shaped groove 1a, and effectively prevents the suspension bolt 2 from being pushed.

The present invention can also be applied to the case where the opening of the equipment suspension rail is oriented laterally. Further, the square root bolt and the push-in prevention retainer used as the hanging bolt are not limited to the shapes of the above-described embodiments. In particular, the push-in prevention retainer is inserted between the head of the suspension bolt and the inner surface of the T-shaped groove of the equipment suspension rail to fill these gaps, so that the corner root of the suspension bolt is opened in the equipment suspension rail. It is only necessary to prevent the retainer from slipping out of the portion, and the push-in prevention retainer can be attached by sandwiching only the head of the suspension bolt or by inserting a protrusion into an engagement hole formed in the suspension bolt. Furthermore, the present invention, in addition to the underfloor equipment of the vehicle,
It can be widely applied to suspend various equipment and devices.

[0036]

According to the present invention, the retainer for preventing the pushing of the hanging bolt is arranged in the gap between the head of the hanging bolt and the inner surface of the T-shaped groove of the equipment hanging rail, so that the nut can be screwed in when the nut is screwed in. Since the retaining bolts prevent the suspension bolt from being pushed into the T-shaped groove of the equipment suspension rail, the nut can be securely attached without the corner root of the suspension bolt coming out of the opening and rotating the suspension bolt together. It can be screwed in, and the equipment can be easily suspended in a short time.

[Brief description of drawings]

FIG. 1 is a sectional front view showing a first embodiment of the present invention.

FIG. 2 is a sectional side view showing the first embodiment of the present invention.

FIG. 3 is an exploded perspective view of a suspension bolt and a push-in prevention retainer showing a first embodiment of the present invention.

FIG. 4 is a sectional front view showing a second embodiment of the present invention.

FIG. 5 is a sectional side view showing a second embodiment of the present invention.

FIG. 6 is a sectional side view showing a third embodiment of the present invention.

7 is a sectional view taken along line VII-VII of FIG.

FIG. 8 is a sectional front view showing a fourth embodiment of the present invention.

FIG. 9 is a sectional side view showing a fourth embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Rail for suspending equipment 1a ... T-shaped groove of rail 1 for suspension of equipment 1b ... Opening portion of T-shaped groove 1a 1c ... Lip portion 1d ... Inner surface of T-shaped groove 1a ... Suspension bolt 2a ... Shaft portion of suspension bolt 2 2b ... Head of the hanging bolt 2c ... Square root portion of the hanging bolt 2d ... Split pin hole 3 ... Pressing prevention retainer 3a ... Mounting portion having a U-shaped cross section for mounting on the hanging bolt 3b ... Pressing prevention piece 3c ... upper piece 3d forming the mounting portion 3a ... lower piece 3e forming the mounting portion 3a ... side piece 3f forming the mounting portion 3a ... sandwiching piece 3g ... locking claw 4 ... nut 5 ... frame 5a for connecting devices ... Bolt hole 6 of frame 5 ... Plain washer 7 ... Spring washer 10 ... Push-in prevention retainer 10a ... Elastic part 10b ... Abutment piece 10c ... Presser piece 10d ... Picking piece 20 ... Push-in prevention retainer 20a ... Presser piece 20b ... Contact piece 20c ... Elastic portion 20d, 20e ... Clipping piece 30 ... Push-in preventing retainer 30a ... Push-in preventing portion 30b, 30c ... Holding portion 30d ... Locking piece C1 ... Head 2c of hanging bolt 2 and equipment hanging rail 1 Between the inner surfaces 1d of the T-shaped grooves 1a C2 ... The upper piece 3c and the lower piece 3d of the push-in prevention retainer 3
Distance C3 ... Distance between the sandwiching pieces 3f, 3f of the retainer C4 ... Gap between the gap C1 and the length L2 of the push-in preventing piece 3b C5 ... Distance between the sandwiching pieces 20d, 20e C6 ... Holding portions 30b, 30c Distance C7 ... Distance between one enclosing portion 30b and tip of locking piece 30d L1 ... Length of head 2c of hanging bolt 2 L2 ... Length of push-in prevention piece 3b T1 ... Head 2c of hanging bolt 2 And the thickness of the corner root 2b T2 ... the thickness of the corner root 2b of the hanging bolt 2 W1 ... the width of the head 2c of the hanging bolt 2 and the corner root 2b W2 ... the width of the retainer 3 mounting portion 3a W3 ... for suspending equipment Width of opening 1b of rail 1

Claims (1)

[Claims] 1. A head portion and a corner root portion of a suspension bolt are inserted from an opening portion of a T-shaped groove of a device suspension rail, the suspension bolt is rotated 90 degrees and pulled back, and the corner root portion is removed from the opening portion. In a mounting structure of a mounting bolt with a square root, which is fitted between both lip parts to mount the hanging bolt and prevent rotation, the head of the hanging bolt inserted into the T-shaped groove of the equipment hanging rail, and the hanging bolt. A mounting structure for a hanging bolt with a square root, characterized in that a retainer for preventing the pushing of the hanging bolt is arranged in a gap between the inner surface of the T-shaped groove facing the head of the bolt.