JPS5818498Y2 - Hanging bolt clamping fixture - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a clamping fixture for vertically installing a hanging bolt for suspending a ceiling base material such as a field edge support or field edge in a lightweight steel frame ceiling base structure.

In general, lightweight steel frame ceiling base structures are constructed by arranging a large number of field edges evenly spaced and parallel in the ceiling construction space, and placing a large number of equally spaced and parallel field edges under each field edge support in a crisscross pattern. and secure them together using appropriate connectors.

A ceiling board is stretched over the lower surface of the field edge to form a ceiling, and each of the field edge supports is suspended horizontally by a large number of hanging bolts suspended from the floor above.

In other words, appropriate connecting fittings are provided on the upper floor, and each hanging bolt is attached by screwing its threaded part into the connecting fitting and is hung vertically. Inserting and screwing screws into the connecting fittings one by one wastes a lot of time in ceiling construction work and is inefficient.

In view of the above-mentioned conventional hanging bolt hanging technology, the present invention is designed by burying the hanging bolt integrally at the bottom of the upper floor and simply inserting the threaded part of the hanging bolt from below, which clamps and fixes the threaded part, thereby applying weight to the hanging bolt. This provides a clamping fixture for the suspension bolt, which makes the clamping firm and allows the suspension bolt to be pulled out by rotating along the thread groove.

An embodiment of the present invention will be described in detail below with reference to the drawings.

In FIGS. 1 and 2, the upper part of a metal or synthetic resin hollow outer cylinder 2 having an upwardly expanding inclined body part 1 can be sealed with a lid 3, and the lower part of the outer cylinder 2 is a body part. 1 to form an insertion hole 4 for a hanging bolt A.

Further, a fixing plate 6 having a nail insertion hole 5 is integrally provided on the outer periphery of the lower end of the outer cylinder 2.

The fixing plate 6 has a rectangular shape in the illustration, but the outer cylinder 2
It may be concentric disc-shaped.

A pair of clamping members 7 made of the same material as the outer cylinder 2 are loosely fitted into the hollow body 1 of the outer cylinder 2.

As shown in detail in FIGS. 3 and 4, the holding member 7 is a pair of trapezoidal cones vertically divided at the center, and the outer circumferential surface thereof is in contact with the inclined inner surface of the body 1. It has an inclined surface 8 that can slide up and down, and a locking protrusion 1 is carved along the circumference in a longitudinal semicircular groove 9 in the center of the opposing surface of each clamping member 7.
0 is distributed equally over the entire length.

The latching protrusion 10 is shown to have a thread groove shape that can be screwed into the thread groove B of the hanging pole A, but as shown in FIG. It may be in the shape of a protrusion, and the shape of the protrusion can be arbitrarily selected as long as it can fit into the thread groove of the suspension bolt and clamp it.

If each clamping member 7 is installed in the inclined body part 1 of the outer cylinder 2 with its end surfaces 7a facing each other, it will be positioned below the body part 1 due to its own weight, and will face the semicircular groove 9 having the latching protrusion 10. The inner diameter of the clamping hole 11 formed by the above is smaller than the outer diameter of the hanging pole A.

An elastic member 12 such as rubber or a spring is interposed between the lid body 3 and the clamping member 7, and the clamping member 7 is gently pressed downward in the body 1 to prevent it from rattling in the vertical direction. There is.

The present invention has the above-mentioned configuration, and the state of use will be explained next.

When constructing a concrete floor, concrete formwork plates are installed over the entire floor construction space using appropriate support devices, and reinforcing steel bars are placed above the formwork plates.

Concrete is then poured onto the top of the formwork board, and the formwork board is removed after the concrete has cured and hardened.

The fixing device of the present invention is installed and fixed on the formwork board C using nails at a position corresponding to the vertically installed position of the hanging bolt A, as shown in Figure 6a, and the formwork board is fixed after the poured concrete hardens. If C is removed, the fixture will be attached to the concrete floor E as shown in the same figure.
The suspension bolt insertion hole 4 of the outer cylinder 2 is exposed to the lower surface of the floor E.

The nails may remain protruding from the subfloor surface, or the protruding portions may be cut away.

If the screw groove (part) B of the hanging pole (A) is inserted through the insertion hole 4 of the outer cylinder 2 buried and fixed in the concrete floor as described above,
The inner diameter of the clamping hole 11 of the clamping member 7 located at the lower inside of the body 1 is smaller than the outer diameter of the hanging bolt A.
The elastic member 12 is compressed and pushed upward along the inclined inner surface, and if the clamping (L11 interval gradually expands and the hanging pole) A is further inserted, the inner surface of the clamping hole 11 formed by both clamping members 7 The latching protrusion 10 is a hanging port)
By fitting into the screw groove B of A, and pulling the hanging pole A downward once on a trial basis, the clamping member 7 moves slightly downward along the inclined surface of the body 1, and the latching protrusion 10 and the screw groove B are A tight fit is created.

After that, when a ceiling base material, a ceiling board, etc. are hung from the lower part of the hanging pole (A), weight pressure is applied to the hanging pole (A), the clamping member 7 is further pulled downward in the body 1, and the hanging pole by the clamping member 7 is )A The clamping of the screw groove B becomes strong and the hanging pole)A
There is no exception.

According to the present invention described above, a pair of clamping members 7 are installed in the body 1 having an inclined surface that expands upwardly and is narrow at the bottom, and the opposing surfaces of the clamping members 7 are provided with hanging poles) A. Thread groove B
By providing a locking protrusion 10 that can be fitted into the clamping member 7, and forming a sloped surface on the outer periphery of the clamping member 7 that can slide along the sloped surface of the body 1, the thread groove B of the hanging bolt A can be inserted into the clamping hole 11. By applying a downward load to the hanging pole (A), the clamping member 7 moves downward until its latching protrusion 10 is tightly fitted into the thread groove (B) of the hanging pole (A). Both sides are clamped and hung by the clamping protrusions 10 of the clamping member 7)
completely suspended.

By interposing the elastic member 12 between the lid body 3 and the clamping member 7, the clamping member 7 becomes stable in the body 1, and in particular, after inserting the hanging pole A and clamping it by the clamping member 7. The clamping condition will not loosen due to causes such as work vibrations.

The vertical length of the hanging pole A can be finely adjusted by turning it to the left (as shown in the figure) along the thread groove B. If the hanging pole A is turned further to the left, the hanging pole A can be pulled out from the clamping member 7. I can put it out.

In the above description, the outer cylinder 2 has been described as having a cylindrical shape, and the gripping member 7 has also been described in terms of a shape that can be fitted into the outer cylinder 2. The holding member 7 may also have a shape that can fit into the square cylinder.

[Brief explanation of drawings]

Fig. 1 is a vertical sectional view showing one embodiment of the fixing device of the present invention;
3 is a plan view of the clamping member, FIG. 4 is a sectional view taken along the line X-X, FIG. 5 is a sectional view showing the other side of the latching protrusion of the clamping member, and FIG. This figure shows the state in which the devised fixture is used; Figure a is a front view of the fixture fixed to the formwork board;
This figure is a cross-sectional view of the fixing device buried in the concrete floor and the hanging bolts vertically installed. 1 is the body, 2 is the outer cylinder, 3 is the lid, 4 is the suspension bolt insertion hole,
6 is a fixing plate, 7 is a clamping member, 10 is a latching projection, 11 is a clamping hole, and 12 is an elastic member.

Claims (1)

[Scope of utility model registration request] The outer cylinder 2 has a slanted body part 1 that expands upward, and the upper part is sealed by a lid 3 and the lower part is open to form a hanging bolt insertion hole 4. A nail insertion hole 5 is provided on the outer periphery of the lower end of the outer cylinder 2. A fixing plate 6 is integrally arranged, and inside the body part 1, a semicircular locking protrusion 10 is carved in the vertical direction at the center of the opposing surface, and a holding hole 11 is formed so as to be slidable up and down along the inclined surface. A clamping fixture for a suspension bolt, characterized in that a pair of clamping members 7 forming a frame are loosely fitted, and an elastic member 12 is interposed between the lid body 3 and the clamping members 7.