JPH0669427U - insert - Google Patents

Abstract

(57) [Summary] [Purpose] To provide an insert in which a hanging bolt is easily attached and detached and does not fall off. [Constitution] An inverted frustoconical cylinder 2 having a cylindrical portion 1 connected to the lower end thereof
A locking collar 3 is provided at the upper end of the base, a cap body 4 is fitted and fixed to the locking collar 3, and a split groove 5 is provided in the inverted frustoconical cylindrical body 2 upward from the lower edge of the opening. Loosely fit the tube 6,
A female screw 7 is provided on the inner peripheral surface of the taper screw cylinder 6 to bring the taper screw cylinder 6 into pressure contact with the taper inner peripheral surface 2 ′ of the inverted frustoconical cylinder body 2. The female screw 7 has a male screw 8 ′. The bolt 8 is screwed and suspended.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a suspension bolt insert used when installing a water pipe, a gas pipe, an electric pipe, or the like on a ceiling or a wall surface.

[0002]

[Problems to be solved by conventional techniques and devices]

 Conventionally, when installing a water pipe, an electric pipe, or a duct on a ceiling or a wall surface, an insert is embedded in advance along the installation line, and a suspension bolt is screwed to the insert to attach it to the lower end. Although the pipes, ducts, and scaffolds were fastened to each other, the falling bolts were frequently dropped because the suspension bolts screwed into the insert were not screwed in sufficiently.

An object of the present invention is to solve the above-mentioned drawbacks and to provide an insert into which a suspension bolt can be easily screwed and which does not fall out.

[0004]

[Means for Solving the Problems]

 The gist of the present invention will be described with reference to the accompanying drawings.

A locking flange 3 is provided on the upper end of an inverted frustoconical cylinder 2 having a cylindrical portion 1 connected to the lower end, and a cap body 4 is fitted and fixed to the locking flange 3. A taper screw cylinder 6 provided with a split groove 5 upward from the lower edge of the opening is loosely fitted in the inner peripheral surface of the taper screw cylinder 6, and the taper screw cylinder 6 is provided on the inner peripheral surface of the inverted truncated cone cylindrical body 2. The insert is characterized in that a female screw 7 is provided on the surface 2'for downward pressure contact, and a suspension bolt 8 having a male screw 8'is screwed and suspended on the female screw 7.

[0006]

[Action]

 When the male screw 8 ′ of the hanging bolt 8 is inserted from the cylindrical portion 1 of the inverted truncated cone-shaped cylindrical body 2 and the male screw 8 and the female screw 7 of the taper screwed cylinder 6 are screwed together and tightened, the taper of the inverted frustoconical cylindrical body 2 is tapered. The inner peripheral surface 2 ′ and the outer periphery of the taper screw cylinder 6 come into contact with each other, and the wedge effect due to the taper of both and the split groove 5 formed in the taper screw cylinder 6 presses the female screw 7 of the taper screw cylinder 6 inward. The male screw 8 ′ of the hanging bolt 8 and the female screw 7 of the taper screw cylinder 6 are firmly locked.

[0007]

【Example】

 The drawing shows a preferred embodiment of the present invention, in which a locking flange 3 is provided at the upper end of an inverted frustoconical cylindrical body 2 in which a cylindrical portion 1 is connected. The edge of the cap body 4 is fitted and fixed to the locking collar 3 in a seal state, and the split groove 5 is formed in the tapered inner peripheral surface 2'of the inverted truncated cone cylindrical body 2 upward from the lower edge of the opening. The taper screw cylinder 6 provided is loosely fitted, and the outer peripheral surface of the taper screw cylinder 6 is formed into a shape that substantially matches the taper of the taper inner peripheral surface 2 ′ of the inverted truncated cone cylindrical body 2. A female screw 7 is provided on the inner peripheral surface of which a male screw 8'of a suspension bolt 8 is loosely fitted and screwed with a gap.

An elastic plate body 9 having a hollow hole is provided between the upper surface of the tapered screw cylinder 6 and the lower surface of the cap body 4, and a small protrusion 10 is provided below the tapered inner peripheral surface 2 ′.

Since the embodiment is configured as described above, when the male screw 8 ′ of the hanging bolt 8 is inserted from the lower end cylindrical portion 1 of the inverted frustoconical cylinder body 2 and screwed in, the inverted frustoconical cylinder body 2 is The small projection 10 provided on the inner peripheral surface 2 ′ of the taper is locked in the split groove 5 of the taper screw cylinder 6, and the taper screw cylinder 6 is prevented from rotating together with the suspension bolt 8. Since the female screw 7 is formed so as to be loosely fitted and screwed into the male screw 8 ′ of the suspension bolt 8 with a gap, the suspension bolt 8 is easily screwed into the taper screw cylinder 6, and the taper of the taper screw cylinder 6 is tapered. The outer cylindrical portion and the tapered inner peripheral surface 2 ′ of the inverted truncated cone-shaped cylindrical body 2 come into contact with each other, and the inner surface of the taper screw cylinder 6 is pressed against the male screw 8 ′ of the suspension bolt 8 due to the wedge effect due to the taper of both. The male thread 8'of the suspension bolt 8 is strongly screwed and locked to the female thread 7 of the taper screw cylinder 6 by the split groove 5 provided in the taper screw cylinder 6. Since, it is possible to prevent hanging bolt 8 from falling off from the tapered threaded cylinder 6. Further, when removing the suspension bolt 8 from the insert, the suspension bolt 8 can be easily removed from the insert by rotating the suspension bolt 8 in the direction in which the screw is loosened.

Further, since the cylindrical portion 1 is continuously provided at the lower end of the inverted truncated cone-shaped cylindrical body 2, it is possible to cut and adjust the length of the cylinder according to the thickness of the ceiling or the wall surface, and to embed it. Low cost inserts can be supplied because inserts with lengths suitable for on-site work can be easily obtained.

In addition, reference numeral 11 in the figure is an identification cap for identifying the lines of various piping systems such as steam, water, oil, gas by various colors, and for preventing foreign matter from entering the insert after the suspension bolt is installed. It is the body.

[0012]

[Effect of device]

 According to the present invention, a locking flange is provided on the upper end of the inverted truncated cone-shaped cylindrical body in which the cylindrical portion is continuously connected to the lower end as described above, and the cap body is fitted and fixed to the locking flange, and is divided into the inverted truncated conical cylindrical body. A female screw that loosely fits a taper screw cylinder provided with a groove upward from the lower edge of the opening, and the taper screw cylinder is attached to the inner peripheral surface of this taper screw cylinder by downward pressure contact with the taper inner peripheral surface of the inverted frustoconical cylinder. Since a suspension bolt having a male screw is screwed and hung on this female screw, when the suspension bolt is set on the insert, the taper inner peripheral surface of the inverted frustoconical cylinder and the taper outer peripheral surface of the taper screw cylinder are The wedge effect of the taper and the split groove provided in the taper screw cylinder presses the female screw part of the taper screw cylinder inward to firmly lock the male screw of the suspension bolt and the female screw of the taper screw cylinder. Eliminates accidents such as dropping of suspension bolts due to insufficient screwing like inserts .

Further, since the cylindrical portion is continuously provided at the lower end of the inverted truncated cone-shaped cylindrical body, even if the thickness of the ceiling or the wall surface is different, it can be easily adjusted by the length of the cylindrical portion to be embedded, which is excellent and practical. It will be an insert.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of the present embodiment.

FIG. 2 is an assembled sectional view showing a usage state of the present embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cylindrical part 2 Inverted frustoconical cylinder 3 Locking collar 4 Cap body 5 Split groove 6 Tapered screw cylinder 7 Female screw 8 Suspension bolt 8'Male screw

Claims (1)

[Scope of utility model registration request] 1. A locking flange is provided at the upper end of an inverted frustoconical cylinder body having a cylindrical portion continuously provided at the lower end, and a cap body is fitted and fixed to the locking flange, and a split groove is formed in the inverted frustoconical cylinder body. A taper screw cylinder provided upward from the lower edge of the opening is loosely fitted, and a taper screw cylinder is provided on the inner peripheral surface of the taper screw cylinder so as to make a downward pressure contact with the taper inner peripheral surface of the inverted frustoconical cylinder. An insert characterized in that a suspension bolt having a male screw is screwed and suspended to the female screw.