JPH0893740A - Support tool - Google Patents

Abstract

PURPOSE: To constitute a support tool of a main lever and a locking member to be installed on this, install its locking member on the main lever by simple operation, and increase installing strength in the support tool used when a hanger to suspend, for example, the ceiling is held by an architectural slab. CONSTITUTION: A support tool has an outer peripheral surface formed of a circular arc part 4 having at least one cross-sectional shape of a bar body and a chord-shaped part 3 having similarly at least one, and has a main lever 1 where a male strip 5 is carved in the circular arc part 4 and a through hole 6 penetratingly passing through upper end under surfaces of a block body, and a female strip 8 to mesh and engage with the male strip 5 of the main lever 1 is carved on an inner peripheral surface of the through hole 6. The support tool has an inserting port 7 leading to the through hole 6 from an outer peripheral surface of the block body, and is composed of a locking member 2 arranged within a range where a width (a) of the inserting port 7 is wider than the smallest width (b) in a cross-sectional shape of the main lever 1 and narrower than an inside diameter (c) of the through hole 6, and a central part of a virtual circle drawn by the aircular arc part 4 exists in a cross section of the main lever 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a building of reinforced concrete or steel frame structure and supports a member for suspending a ceiling, a duct or the like, or a member for receiving a floor by standing or standing upright from the slab. For a support for.

[0002]

2. Description of the Related Art In a reinforced concrete or steel structure building, nuts are attached to bolts protruding from a slab in order to support a hanging frame for hanging a ceiling, a hanging band for holding a duct, or a large pulling for supporting a floor. Fit
It is common to attach a hanger to the bolt with the nut as a set collar.

When the nuts are fitted to the above bolts, it is necessary to adjust the mounting height of each bolt. If the bolt is a vertically installed bolt and the nut is mounted at a high position, the nut is mounted from the lower end of the bolt. Since it is necessary to screw in deeply and it is necessary to carry out over a large number of screws, it takes time to install the nut unexpectedly, and even if it is a simple work to screw in, it is a work at a high place. It was also hard work.

As a bolt nut for solving the above problems, a means having a function of quickly attaching the nut to a predetermined position of the bolt is disclosed in, for example, Japanese Utility Model Publication No. 53-12.
It is known from Japanese Patent No. 376. This means is constructed by providing an opening with a diameter width from a female screw hole in the nut, and covering the nut with a cap having a stupid hole that can be inserted into the bolt. In some cases, first insert the cap into the bolt, insert the nut sideways into the bolt through the opening, and cover the nut at the bolt setting position to prevent the nut from slipping out of the bolt. It can be set and placed in a predetermined position.

[0005]

The above-mentioned conventionally known bolt-nut requires a cap in addition to the nut, and has a drawback that it is troublesome to handle. Further, since the opening of the nut is opened with the diameter width of the female screw hole, the engagement state of the bolt and the nut is such that only the male screw of the semicircular portion of the bolt is screwed into the female screw hole. Although the range of the screwed part is wide, the nut is supported in a cantilevered state with respect to the bolt, and when supporting a building hanger etc. with this nut, In some cases, a large load may be applied, and a large twisting force acts on the screwed portion even if the nut does not come off, and there was another problem in reliability with respect to durability.

The present invention is to solve the above problems, and an object of the present invention is to attach a hanger or the like at a predetermined height position by a simple operation and to maintain the attachment state with excellent durability. To provide.

[0007]

Means for Solving the Problems The solution according to the present invention comprises a rod body having a cross-sectional shape of at least one arc portion and an outer peripheral surface also formed by at least one chordal portion,
A main rod having a male rod engraved on the arc surface and a through-hole penetrating through the upper and lower surfaces of the block body, and a female rod having an inner peripheral surface of the through-hole meshingly engaged with the male rod of the main rod. It is engraved and has an insertion port that communicates with the through hole from the outer peripheral surface of the block body, and the width of the insertion port is within a range that is wider than the minimum width in the cross-sectional shape of the main rod and narrower than the inner diameter of the through hole. It consists of the provided locking member,
It is characterized in that the center portion of the virtual circle drawn by the arc portion exists in the cross section of the main rod.

The chordal portion refers to a secant other than the diameter of the circle, that is, it does not include a shape that passes through the core of the main rod. The chordal portion is a straight line in the definition of a circle, but the chordal portion does not mean only a straight line, but a curved curve of a convex curve or a concave curve having a curvature larger than the curvature of an arc portion. Shall also be included. Furthermore, the presence of the center of the virtual circle drawn by the arc portion in the cross section of the main rod means that an arcuate portion is obtained by, for example, a dividing line passing through two points on the circumference, and the arcuate portion and the chordal portion are also formed in the arcuate portion. However, there is no central part of the virtual circle drawn by the arc part in the arcuate part, and such a form is excluded.

The male thread of the main rod and the female thread of the locking member may be formed by screw threads threaded with each other, or may be formed by a large number of concavo-convex annular threads.

Further, a set screw communicating from the outer peripheral surface to the through hole may be screwed into the locking member, and a hole for inserting a plug for blocking the insertion port may be provided in the locking member.

[0011]

[Operation] To attach the locking member to the main rod, insert the insertion port of the locking member from the side toward the minimum width of the main rod, and rotate the locking member while pressing it in the inserting direction.
By facing the insertion opening other than the minimum width of the main rod,
The locking member can be attached in a stable state.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS To explain the present invention in detail, as shown in the plan view of FIG. 1, 1 is a bolt-shaped main rod, and 2 is a nut-shaped locking member. The rod 1 is long like a rod, and its structure will be described. To explain, a rod 1a (shown by a one-dot chain line in the figure) has a long bolt as a base material, and a male screw is engraved on the outer periphery of the rod 1a. Both side portions symmetrical about the axis are cut out along the entire length in the longitudinal direction, that is, formed by a pair of parallel chordal portions 3 and 3 and a pair of arc portions 4 and 4, and each arc portion is formed. 4, 4 and 4 are provided with male threads 5 and 5 made of notched male screws. The chordal portion 3 may be a straight line or a convex curve or a concave curve having a curvature larger than that of the arcuate portion 4.

On the other hand, the locking member 2 is composed of a hexagonal block body, and when it is also described in a state of being molded, an insertion port 7 is provided which leads from the outer peripheral surface of the hexagonal nut to the through hole 6 which is a female screw hole. On the inner peripheral surface of the through hole 6, the main rod 1
The female thread 8 is formed by engraving the female thread that meshes with the male thread 5.

By the way, the width a of the insertion port 7 is equal to the width of the main rod 1.
Of the minimum width b of the through hole 6 and the inner diameter c of the through hole 6 is b <a <
It is formed so that the mathematical formula for c holds. That is, the width a of the insertion port 7 is wider than the minimum width b of the main rod 1 and narrower than the inner diameter c of the through hole 6.

Therefore, in order to attach the locking member 2 to the main rod 1, as shown in FIG. 1, the insertion port 7 of the locking member 2 is opposed to the minimum width b of the main rod 1 so that the main locking member 2 is attached. By inserting the main rod 1 into the through hole 6 by inserting it into the rod 1, the locking member 2 is rotated 90 degrees about the main rod 1 while keeping the state, Like the main rod 1
Both male strips 5 and 5 mesh with the female strip 8, and in this state, the locking member 2 is securely held without falling off from the main rod 1.

As shown in FIG. 3, the locking member 2 attached to the main rod 1 is prevented from rotating so that the mounting state is more reliable. It is preferable to provide a set screw 9 that communicates with the through hole 6.
Alternatively, as shown in FIG. 4, a through hole 11 may be provided through which a plug 10 such as a cotter pin for sealing across the insertion port 7 is inserted. The set screw 9 and the plug 10 may be provided individually or in combination.

Next, in the example shown in FIG. 5, only the form of the main rod 1 is different, that is, the form in which a part of a circle is cut out,
It is formed by one chordal portion 3 and one arcuate portion 4.

In the example shown in FIG. 6, the main rod 1 is formed by a pair of chordal portions 3 and 3 and a pair of arc portions 4 and 4.
The main rod 1 is different from the main rod 1 in that the pair of chordal portions 3, 3 are not parallel to each other.

Further, the example shown in FIG. 7 is a special example, in which the main rod 1 has a notch formed by cutting a part of a circle into the circle, that is, the phase of the circumference is different. Line segments that coincide from the point in the vicinity of the center of the circle, and each line segment becomes a part of the chord, but it is composed of two chordal parts 3 and 3 and one arc part 4 formed by the line segments that are part of the chord. It was done.

The example of FIG. 8 has a shape opposite to that of FIG. It is a notch along two chords that pass through one point in a circle, and therefore one arcuate part 4 and two chordal parts 3 and 3 formed by a line segment that is a part of the chord forming a mountain shape. It is composed. Note that each of the above examples may also be provided with a stop means using the set screw 9 or the plug 10.

Similar to the example of FIG. 1, the examples of FIGS. 7 and 8 described above are such that the main rod 1 is provided with a wide portion having a maximum diameter and a narrow width portion narrower than the wide portion. Is. As described above, the wide portion has the diameter of the main rod 1, and the diameter less than that is not included in the present invention. That is, it is necessary for the main rod 1 to have the center of the circle before the notch, and those without the center are excluded. Therefore, as shown in each figure, when the locking member 2 is attached to the main rod 1,
The center of the main rod 1 and the virtual center of the through hole 6 of the locking member 2 coincide with each other.

As still another example of the present invention, the male thread 5 and the female thread 8 of the through hole 6 provided on the main rod 1 may be male and female screws as described above, but are not limited to the screws. , FIG. 9 to FIG.
As shown in FIG. 1, the male strip 5 is formed by a large number of annular projections, while the female strip 8 is formed by a large number of annular recesses that engage with the annular projections of the male strip 5, although not shown. You may. Incidentally, a male screw is engraved and placed on at least one end of the main rod 1 provided with a male ridge formed by an annular ridge.

The present invention has the above-described structure, and as shown in FIG. 12 and an enlarged view of a part thereof in FIG. 12, the main rod 1 is screwed into the insert 13 embedded in the slab 12 and hangs down. Then, in order to suspend the field edge receiving member 15 that supports the ceiling 14 on the main rod 1, first, insert the hanger 16 having a stupid hole or a U-shaped hole into the main rod 1 and place the hanger at a predetermined height position. The locking member 2 for mounting and receiving 16 is engaged by the above-mentioned operation, and the locking member 2 is also attached to the upper side of the hanger 16 so that the upper and lower locking members 2, 2
It holds the hanger 16 in place.

[0024]

According to the support according to the present invention, the width of the insertion opening opened in the locking member is wider than the minimum width of the main rod but narrower than the inner diameter of the through hole having the female thread of the locking member. Since it is possible to insert the main rod into the through hole of the locking member through the insertion port, it is needless to say that the locking member can be easily and immediately attached to the main rod at a predetermined position, but within the cross section of the main rod. Since the center of the imaginary circle drawn by the arc is present, it is attached in a state where the center of the main rod and the center of the through hole match, and moreover, it is attached to the main rod of the locking member. It is possible to mount in a good balance, the biased force is not applied to the locking member, the mounting strength is improved, and the durability is increased.

Further, since the main rod has a cross-sectional shape which is not a circle but a shape in which at least a part of a circle is cut out, when the main rod is screwed into an insert embedded in a building slab, concrete is inserted into the insert. There are often things that have adhered, and if it is a conventional round bar-shaped bolt, it took time and effort to plunge the adhered concrete with a chisel and then screw it in. In the case of a rod, by rotating the main rod and inserting it into the insert, a space is created between the notched portion and the inner surface of the insert, and concrete can be easily removed from this space. The fixing operation is also easy.

[Brief description of drawings]

FIG. 1 is an exploded plan view of a support according to the present invention.

FIG. 2 is a plan view showing a state in which a main rod and a locking member which also constitute a support tool are combined.

FIG. 3 is a plan view showing a support including a locking member of a similar example.

FIG. 4 is a plan view showing a support including a locking member of a similar example.

FIG. 5 is a plan view showing a supporting tool provided with a similar main rod.

FIG. 6 is a plan view showing a supporting tool provided with a similar main rod.

FIG. 7 is a plan view showing a supporting tool including a main rod of an example.

FIG. 8 is a plan view showing a supporting tool provided with a similar main rod.

FIG. 9 is a plan view showing a main rod provided with a male line formed by an annular convex line.

FIG. 10 is a partial front view of the same.

11 is a cross-sectional view taken along the line AA of FIG.

FIG. 12 is a front view showing an example of use of the support tool of the present invention.

13 is an enlarged cross-sectional view of a B part in FIG.

[Explanation of symbols]

 1 main rod 2 locking member 3 chordal portion 4 arcuate portion 5 male thread 6 through hole 7 insertion opening 8 female thread 9 set screw 10 plug 11 through hole a insertion hole width b minimum width of main rod c inner diameter of through hole

Claims (5)

[Claims] 1. A cross-sectional shape of a rod body is provided with at least one arc portion (4) and an outer peripheral surface which is also formed by at least one chordal portion (3), and a male thread () is formed on the arc portion (4). 5) has a main rod (1) engraved with it, and a through hole (6) penetrating the upper and lower surfaces of the block body. A female thread (8) meshingly engaged with is engraved and provided with an insertion opening (7) communicating with the through hole (6) from the outer peripheral surface of the block body, and the width (a) of the insertion opening (7). ) Comprises a locking member (2) which is wider than the minimum width (b) in the sectional shape of the main rod (1) and narrower than the inner diameter (c) of the through hole (6). A support tool characterized in that a center part of a virtual circle drawn by the arc part (4) is present in the cross section of the rod (1). 2. The male thread (5) of the main rod (1) and the female thread (8) of the locking member (2) are screw threads threaded with each other. Support. 3. The male thread (5) of the main rod (1) and the female thread (8) of the locking member (2) are a large number of concavo-convex annular threads engaging with each other. The support according to item 1. 4. The set screw (9) communicating with the through hole (6) from the outer peripheral surface of the locking member (2) is screwed into the locking member (2). Support. 5. The locking member (2) is provided with a withdrawal hole (11) through which a plug (10) for blocking the insertion port (7) is inserted. The support according to item 4.