JPS5816413B2 - Hanging bolt fixing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fixing device for vertically installing a suspension bolt for suspending a ceiling base material in a lightweight steel frame ceiling base structure.

Generally, the lightweight steel ceiling substructure is as shown in Figure 1.
A large number of field fences A are arranged in the ceiling construction space at equal intervals and parallel to each other, and a large number of field fences B are placed in a cross pattern at equal intervals and parallel to each other below the field fence A. The intersections are connected and fixed using appropriate connecting fittings, and a ceiling board is stretched over the lower surface of the field edge B to construct a ceiling.

The fence support A is horizontally suspended in the ceiling construction space by a hanging pole hC hanging from the upper floor, but the upper end of the hanging bolt C is attached to a fixture (not shown) installed on the upper floor. screw insertion,
It is hung vertically downward by screwing it on.

To hang one field support A, multiple hanging bolts C are required.
Therefore, in order to suspend a large number of field fences A, a considerable number of hanging bolts C are required to match the number of field fences A. Inserting screws into the fixtures is an extremely complicated task when constructing ceilings, and if the hanging bolts are not screwed in enough, the hanging bolts will not be stable and will not be able to withstand the weight of the ceiling base material. be.

In view of the above-mentioned conventional hanging bolt vertical installation technology, the present invention is designed to bury hanging bolts integrally in the floor when constructing an upper floor, expose hanging bolt insertion holes on the underside of the floor, and simply insert the upper ends of the hanging bolts. A fixing device capable of clamping and fixing is provided.

That is, an object of the present invention is to provide a fixing device that can easily and reliably fix a hanging bolt vertically.

Another object of the present invention is to provide a fixing device that can clamp and vertically fix hanging bolts by simply inserting them without screwing or tightening them.

Another object of the present invention is to provide a fixing device that can be easily attached to a concrete pouring form board when integrally buried in a concrete floor.

Embodiments of the present invention for achieving the above object will be described in detail below with reference to the drawings.

FIGS. 2 and 3 show an embodiment of the fixture of the present invention, in which the four-sided body plate 1a forming the rectangular cylindrical outer cylinder 1 is inclined in an upwardly expanding shape. The upper opening of the outer cylinder 1 can be sealed with a lid 2, and a fixing plate 3 is integrally connected to the lower end of the outer cylinder 1. Insertion hole 4 for guiding the hanging pole L-D into 1
to be drilled.

Inside the hollow part of the outer cylinder 1, a rectangular cylindrical inner cylinder 5 is installed between the lid body 2 and the fixing plate 3.

The vertical west side plate forming the inner cylinder 5 faces the body plate 1a of the outer cylinder 1 and has a double cylinder structure. It's the same as a dog.

A guide groove 6 for a holding body, which will be described later, is formed in each square part of the inner cylinder 5 in the vertical (length) direction, and the inner cylinder 5 is provided with side plates that form four sides at least in the lower square part of the guide groove 6. The rectangular cylindrical body is maintained.

A spherical clamping body 7 that is movable up and down is installed between the square parts of the outer cylinder 1 and the inner cylinder 5.

The diameter of the holding body 7 is larger than the small interval between the guide grooves 6,
Although the clamping body 7 projects inward to the inner cylinder 5 through the guide groove 6, it does not fall out.

As mentioned above, the four-sided body plate 1a of the outer cylinder 1 is inclined upward in a widening shape, and the four side plates of the inner cylinder 5 are vertically upward, so that the width between the outer cylinder 1 and the inner cylinder 5 increases upwardly. Therefore, when the clamping body 7 moves up and down along the inclination of the body plate 1a of the outer cylinder 1, the protruding length of the clamping body T from the guide groove 6 to the inside of the inner cylinder 5 differs.

When the clamping body 7 is located at the lower part of the guide groove 6, that is, at a position where the space between the outer cylinder 1 and the inner cylinder 5 is narrow, the protrusion length of the clamping body 7 is the largest, and gradually decreases as it moves upward. It becomes small.

The distance between the clamping bodies 7 located on the diagonal line of the inner cylinder 5 when the clamping bodies 7 protrude the most into the inner cylinder 5 is the same as the suspension bolt insertion hole 4.
As the clamping body 7 rises, the relative positional relationship between the diameter of the insertion hole 4 and the diagonally diagonal clamping body 1 changes. In combination with the protrusion length of 7, the relative distance between the inner and outer cylinders 1.5, the small distance between the guide groove 6 and the diameter of the clamping body 7, the inclination angle of the body plate 1a of the outer cylinder 1, etc. are collectively determined.

In addition, the reference numeral 8 in the figure is a needle insertion hole bored in the fixing plate 3.

1 This embodiment has the above configuration, and the usage condition will be explained next.

When constructing a floor, a form board is installed on the floor construction surface for pouring concrete, and reinforcing reinforcing bars are placed above this form board and concrete is poured to form the floor base that will become the upper floor. After solidification, remove the formwork board.

The fixture of the present invention is erected on the upper surface of the formwork plate E shown by the chain line at a position corresponding to the vertically installed position of the hanging bolt D, and is fixed by nailing the lid G.

In this state, concrete is poured in the same way as above,
When the form board E is removed after curing and solidification, the fixture is buried in the floor base F, and the insertion holes 4 for the hanging bolts D are exposed on the lower surface of the base F.

After the fixtures are buried in the floor base F at the required positions in this manner, the hanging bolts D are inserted into each fixture (see FIG. 4).

Before the hanging bolt D is inserted, the spherical clamping body 7 is located below the guide groove 6 between the outer and inner cylinders 1 and 5 due to its own weight, and the clamping body 7 projects from the guide groove 6 into the inner cylinder 5.

When the hanging pole L-D is inserted through the insertion hole 4 and raised, the hanging pole H) hits each clamping body 7, and the four clamping bodies 7 are pulled along the inclined body plate 1a of the outer cylinder 1 by the hanging bolt D. Move upwards.

If the hanging bolt D is inserted until its upper end surface comes into contact with the inner surface of the lid body 2, the distance between the diagonally located clamping bodies 1 will be the same as the outer diameter interval of the hanging bolt D at the rising movement point, and the clamping bodies 7 will be It slides in contact with the circumferential surface of hanging bolt D without rising any further.

In this state, if the hanging bolt D is at its highest position and pulled slightly downward, the clamping body 7 will also be forcibly lowered due to frictional contact, and if the hanging bolt D is pulled further, the clamping body 7 will be tilted. It moves downward along the plate 1a and compresses the outer peripheral surface of the hanging bolt D.

That is, at a certain point of the hanging bolt D that is pulled downward, there is a synergistic effect of the pinching action of the clamping body 7 from four directions on the hanging bolt D and the frictional effect on the clamping body γ pressed between the hanging bolt D and the inclined body plate 1a. As a result, the clamping body 7 clamps the hanging bolt D without rotating, and the hanging bolt D is not pulled out thereafter.

In particular, since the clamping body 7 makes two-sided (point) contact with the body plate 1a at the square portion of the outer cylinder 1, the coefficient of friction is small and the suspension bolt D can be clamped and clamped perfectly.

After attaching the hanging bolts D to each fixture as described above and hanging them vertically, a ceiling base material such as a field edge receiving edge can be suspended from the hanging bolts D as in the conventional method to construct a ceiling.

Due to the hanging of the ceiling base material, a downward weight is applied to the hanging pole L-D, but this weight causes the contact pressure and pinching friction between the hanging bolt, the clamping body γ, and the outer cylinder body plate 1a to be even more severe. As a result, the suspension bolt D is held even more firmly.

Although not shown in the drawings, as another example of the spherical clamping body 1, if the surface of the clamping body γ is made rough to reduce the frictional resistance, the clamping pressure of the hanging bolt D is even greater. ○ Figure 5 shows another embodiment of the fixture of the present invention, in which the same parts are designated by the same reference numerals.

In this embodiment, an elastic body 9 such as rubber or a spring is provided between the outer cylinder 1 and the inner cylinder 5, that is, at a position above the clamping body 1.

By providing the elastic body 9 above the clamping body 7 in this way, when the hanging pole (D) is inserted and the clamping body 1 is moved upward accordingly, the clamping body 7 comes into contact with the elastic body 9 and The clamping body 1 is compressed and its upward position is regulated, and the clamping body 1 is forcibly stopped at a midway position in the guide groove 6, so that the clamping body 7 is clamped to the hanging bolt D in a loose state.

Therefore, by raising the hanging bolt D to a position where it touches the lid body 2 and then pulling it downward, the clamping body 7 is forcibly pressed downward due to the lowering action and the elastic repulsive force of the elastic body 9. The hanging pole ID will be compressed by a slight downward movement.

FIG. 6 shows still another embodiment of the fixture of the present invention, in which the same parts as those described above are designated by the same reference numerals.

This embodiment is characterized in that, instead of the needle insertion hole 8, a fixing piece 10 is punched out and raised downwardly on the fixing plate 3.

By integrating the fastening piece 10 with the fixing plate 3 in this way, the jacket piece 10 can be easily driven into the form board E used when constructing the floor without using a separate lamp body G. It becomes possible to fasten the fixture to the formwork plate E.

As shown in FIG. 7, this fastening piece 10 may also be provided by integrally mounting another fixing plate 3a on the lower surface of the fixing plate 3, or by punching and cutting out the fastening piece 10 on this fixing plate 3a. .

This is effective when it is difficult to directly mold the fixing piece 10 onto the fixing plate 3.

In the above description, the inner cylinder 5 is a rectangular cylindrical body, but it may be a cylindrical body as shown in FIG. It should be installed so that it faces the corner of the

[Brief explanation of drawings]

Fig. 1 is a perspective view showing an example of a lightweight steel frame ceiling base structure, Fig. 2 is a vertical cross-sectional view showing an embodiment of the fixture of the present invention, Fig. 3 is a partially cutaway view of the same, and Fig. 4 is a usage example. A cross-sectional view showing the condition,
FIG. 5 is a longitudinal cross-sectional view showing another embodiment of the fixing device of the present invention, FIG. 6 is a longitudinal cross-sectional view showing still another embodiment of the fixing device of the present invention, and FIG. 7 is a fastening shown in FIG. 6. It is a longitudinal cross-sectional view showing the other side of the piece. 1 is an outer cylinder, 2 is a lid body, 3 is a fixing plate, 4 is a hanging bolt inserter I, 5 is an inner cylinder, 6 is a guide groove, 7 is a clamping body, 8 is a needle inserter L, 9 is an elastic body, 10 is a fastening piece.

Claims (1)

[Claims] 1. Formed by an inclined body plate 1a that expands upward, the upper part can be sealed with a lid body 2, and the lower end is integrally connected with a fixing plate 3 provided with a hanging bolt insertion hole 4. A rectangular cylindrical inner cylinder 5 with a vertical guide groove 6 formed in the rectangular part and with the distance from the outer cylinder 1 increasing in width upwardly is installed in the outer cylinder 1 provided so as to guide the inner cylinder 5. A hanging bolt fixing device characterized in that a spherical clamping body 7 that can move up and down in correspondence with a groove 6 is installed between a square portion of an inner cylinder 5 and an outer cylinder 1. 2. An outer cylinder formed by an upwardly expanding inclined body plate 1a, one part of which can be sealed by a lid 2, and a fixing plate 3 with hanging bolt insertion holes 4 provided at the lower end. 1
A rectangular cylindrical inner cylinder 5 in which the distance from the outer cylinder 1 increases upwardly and a guide groove 6 is formed in the vertical direction in the square part.
A spherical clamping body 7 is installed between the square parts of the inner cylinder 5 and the outer cylinder 1, and an elastic body 9 is placed above the clamping body 7. A hanging bolt fixing device characterized by installing. 3 An outer cylinder 1 formed by an upwardly expanding inclined body plate 1a, the upper part of which can be sealed with a lid 2, and a lower end integrally connected with a fixing part 3 provided with a hanging bolt insertion hole 4.
Inside, a rectangular cylindrical inner cylinder 5 is vertically installed, in which the interval between the outer cylinders 1 (!l-) becomes wider as it goes upward, and a guide groove 6 is formed in the vertical direction in the square part. A spherical clamping body γ, which can be moved up and down correspondingly, is installed between the square parts of the inner cylinder 5 and the outer cylinder 1, and the fixing plate 3 has a fixing piece 10 cut downward. Features a hanging bolt fixing device.