JPH11256766A - Reinforcement connecting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reinforcement connecting device capable of simply connecting reinforcements at size and saving labor and improving efficiency in assembling work for the reinforcements used in sections of a building. SOLUTION: Gourd-shaped holes 13 are provided on the opposed walls 12 of connecting fittings 11 and enlarged-diameter heads 14 passing through the large-diameter portions 13a of the gourd-shaped holes 13 and engaging the small-diameter portions 13b in a locked condition are provided at the ends of reinforcements A to be connected to each other via the connecting fittings 11. The enlarged-diameter heads 14 at the ends of the reinforcements A engaging the small-diameter portions 13b of the gourd-shaped holes 13 in a locked condition allows the connection of the reinforcements A via the connecting fittings 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting device for connecting ends of reinforcing bars to each other.

[0002]

9A and 9B show a structure of a beam reinforcing bar of a building as an example of a field of use of a reinforcing bar. A stirrup is provided on the outer periphery of a main reinforcing bar 2 above a beam and a main reinforcing bar 3 below a beam. The streaks 4 are wound at regular intervals in the length direction, and depending on the size of the beam 1, an abdominal muscle or a width stop bar is used in combination with them, and the ends of the main bar 2 above the beam and the main bar 3 below the beam are And an anchor portion 6 bent downward.

[0003]

By the way, since the stirrup bar 4 in the conventional beam reinforcing bar is formed by bending in advance into a frame shape, the outer periphery of the main bar 2 above the beam and the main bar 3 below the beam is used. However, there is a problem that the handling of the arrangement of the beam rebar becomes troublesome, the assembling work of the beam reinforcing bar on the site is troublesome, and in the case of a large beam, the handling becomes more difficult.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a rebar connecting device which can easily connect rebars on site, and can save labor and improve efficiency of rebar assembling work used in each part of a building.

[0005]

In order to solve the above-mentioned problems, a first aspect of the present invention is to provide a darma hole in an opposing wall of a connection fitting, and to provide a reinforcing rod which is connected to each other through the connection fitting. A large-diameter head that passes through the large-diameter portion of the Dharma hole and engages with the small-diameter portion in a retaining shape at the end is provided, and the enlarged-diameter head portion of the reinforcing bar is engaged with the Dharma hole in a retaining shape. By doing so, a configuration in which the rebar is connected via the connection fitting is adopted.

According to a second aspect of the present invention, there is provided a connecting member provided with a through hole in the opposing wall, a reinforcing bar connected to each other through the connecting member, and a connecting member for connecting the connecting member and the reinforcing bar in a retaining shape. A large diameter head is provided on the coupling member, the large diameter part of which is adapted to the through hole, and the end of the reinforcing bar passes through the large diameter part of the daruma hole and engages with the small diameter part in a retaining shape in a retaining manner. In the state where the enlarged diameter head of the reinforcing bar is inserted through the through hole of the connection fitting and the large diameter portion of the daruma hole, the connecting member is moved to prevent the small diameter portion from falling out to the enlarged head of the reinforcing bar. This configuration adopts a configuration in which the reinforcing bars are connected via the connection fittings by engaging in a shape.

According to a third aspect of the present invention, the bendable connecting member comprises two connecting portions for connecting a reinforcing bar at both ends, a darma hole is provided in the connecting portion, and the connecting portions are not connected to each other via the connecting member. At the end of the reinforcing bar, a large-diameter head that passes through the large-diameter portion of the dharma hole and engages with the small-diameter portion in a retaining shape is provided.
A configuration is employed in which the reinforcing bar is connected via the connection fitting by engaging the enlarged-diameter head of the reinforcing bar with the daruma hole in a retaining shape.

According to a fourth aspect of the present invention, a bending connection fitting having two connection portions for connecting a reinforcing bar at both ends thereof and having a through hole in the connection portion is connected to each other via the connection fitting. It consists of a reinforcing bar to be connected, and a connecting member for connecting the connecting metal and the reinforcing bar in a retaining shape. The connecting member is provided with a darma hole having a large-diameter portion adapted to the through hole. A state in which an enlarged head that passes through the diameter part and engages with the small diameter part in a retaining shape is provided, and the end enlarged diameter head of the reinforcing bar is inserted through the through hole of the connection fitting and the large diameter part of the daruma hole. Then, a configuration is adopted in which the connecting member is moved to engage the small diameter portion with the enlarged head portion of the reinforcing bar in a retaining shape, thereby connecting the reinforcing bar via the connection fitting.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

A first embodiment of the connection device shown in FIGS. 1 to 3 is a cross section of a connection fitting 11 having a U-shaped cross section.
Are provided at the ends of the reinforcing bars A to be connected to each other via the connection fittings 11, respectively.
3 is provided with a large-diameter head 14 that passes through the large-diameter portion 13a and engages with the small-diameter portion 13b in a retaining shape. By engaging, the reinforcing bar A is connected via the connection fitting 11.

The reinforcing bars A connected by the connection device are stirrup bars and spiral hoop bars 4 of the beam reinforcing bars. The upper and lower stirrup bars 4 are connected to each other via a connection fitting 11 in a state where the stirrup bars 4 are fitted to the main bars 3 under the beams.
By dividing the upper and lower parts into two parts, it is possible to efficiently assemble the beam reinforcing bar on site.

The enlarged head 14 provided at the ends of the upper and lower stirrup bars 4 may be expanded by pressurizing the end of the reinforcing bar A. You may.

FIG. 3 shows a different example of the connection fitting 11, and FIG. 3 (A) shows that the opposed walls of the connection fitting 11 having a U-shaped cross section are bent inwardly to improve the tensile strength. It is a thing.

The connection fitting 11 shown in FIG. 3B uses a square pipe and is provided with daruma holes 13 in a pair of opposing walls to improve the tensile strength.

The connecting device according to the first embodiment has the above-described configuration. To connect the ends of the upper and lower stirrup streaks, as shown in FIG. Is inserted into the large-diameter portion 13a of the Dharma hole 13 of the connection fitting 11, and the connection fitting 11 is moved to fit the small-diameter portion 13b to the stirrup streak. 14
Are engaged with the small diameter portion 13b in a retaining shape, and FIG.
The upper and lower stirrup streaks 4 can be connected as shown in FIGS.

A second embodiment of the connecting device shown in FIG. 4 is a connecting member 11 having a through hole 15 formed in an opposing wall 12, and a connecting member 1 for connecting the connecting member 11 and a reinforcing bar A in a retaining shape.
6, the connecting member 16 is provided with a darma hole 13 in which the large-diameter portion 13a conforms to the through-hole 15. At the end of the reinforcing bar A, the large-diameter hole 13a passes through the large-diameter portion 13a. In a state in which the enlarged diameter head 14 that engages in a retaining shape is provided, and the end enlarged diameter head 14 of the reinforcing bar A is inserted through the through hole 15 of the connection fitting 11 and the large diameter portion 13 a of the darma hole 13, The rebar A is connected via the connection fitting 11 by moving the coupling member 16 to engage the small-diameter portion 13b with the enlarged-diameter head 14 of the rebar A in a retaining shape. Note that the connection fitting 11 can adopt the same shape as that of the first embodiment.

In the second embodiment, to connect the ends of the upper and lower stirrup streaks, as shown in FIG. 4A, the enlarged head 14 provided at the end of the stirrup streaks is used. After being inserted through the through hole 15 of the connection fitting 11, on the back side of the connection fitting 11, the large-diameter portion 13a of the darma hole 13 of the connection member 16 is inserted into the enlarged head 14 of the stirrup streak, and connected in this state. If the small diameter portion 13b is fitted to the stirrup streak by moving the member 16, the enlarged diameter head 14 becomes
, And the ends of the stirrup streaks are fixed to the connection fittings 11 via the connecting members 16 so that the upper and lower stirrup streaks can be connected.

A third embodiment of the connecting device shown in FIGS. 5 and 6 is to form a stirrup bar by a combination of linearly cut bars, and to connect the bars. The flexible connection fitting 11a such as a wire
At both ends, two flat connecting portions 17 for connecting reinforcing bars are provided, and the connecting portions 17 are provided with daruma holes 13. After passing through the large diameter portion 13a of the hole 13, the small diameter portion 13a
b, provided with an enlarged diameter head 14 that engages in a retaining shape,
The enlarged diameter head 14 of the reinforcing bar A is engaged with the darma hole 13 in a retaining shape so that the reinforcing bar A is connected via the connection fitting 11a.

In the third embodiment, in order to connect the reinforcing bar A, a bendable connecting fitting 11a is wound around the upper main bar 2 or the lower main bar 4 at the corner of the beam reinforcing bar. Dharma hole 13 of connection part 17 at both ends
Then, the rebar A is connected by the same means as in the first embodiment to form a stirrup bar.

FIG. 6A shows an example in which two connecting portions 17 are overlapped and one reinforcing bar A is connected, and FIG. 6B shows an example in which the reinforcing bar A is connected to each of the connecting portions 17. I have.

The fourth embodiment of the connection device shown in FIGS. 7 and 8 is a modification of the third embodiment,
7 is provided with a through hole 15 and a coupling member 16 is provided with a darma hole 13 whose large-diameter portion 13a conforms to the through hole 15, and the third member is formed using the coupling member 16 in the same manner as in the second embodiment. Connection fitting 11 connection fitting 11a
Are connected to both ends of the steel bar to form a stirrup bar.

In the third embodiment, the arrangement of the large-diameter portion 13a and the small-diameter portion 13b of the dharma hole 13 provided in the connection portion 17 may be reversed from that in FIG.

In each embodiment, the darma hole 1
In the embodiment using the connecting member 16 or a shaft-like member or a plug-like closing member to be inserted into the large-diameter portion 13a after the connection by inserting the reinforcing bar A into the large-diameter portion 13a, 13a, a shaft-like member or a bolt is inserted into the connection member 1a.
By fixing 6 to the connection fitting 11 or the connection portion 17 of the connection fitting 11a, the connection state of the reinforcing bar A and the connection fittings 11 and 11a may be prevented from being detached.

[0024]

As described above, according to the present invention, a dharma hole is provided in the opposing wall of the connection fitting or the connecting member, and the ends of the reinforcing bars which are to be connected to each other through the connection fitting are provided. The above-mentioned connection is provided by providing an enlarged-diameter head that passes through the large-diameter portion and engages with the small-diameter portion in a retaining shape, and the enlarged-diameter head portion of the reinforcing bar is engaged with the daruma hole in a retaining shape. Since the reinforcing bars are connected via metal fittings, for example, it is possible to easily connect reinforcing bars such as stirrup bars and spiral hoop bars in beam reinforcing bars on site, and it is possible to save labor for assembling reinforcing bars used in each part of the building. Efficiency can be improved.

[Brief description of the drawings]

FIG. 1A is a front view showing a first embodiment of a connecting device in a stirrup stirrup connection state, and FIG. 1B is a side view thereof.

FIG. 2A is an exploded perspective view showing a first embodiment of a connection device, and FIG. 2B is a perspective view showing the connection state.

FIGS. 3A and 3B are perspective views showing different examples of connection fittings.

FIG. 4A is an exploded perspective view showing a second embodiment of the connection device, and FIG. 4B is a side view showing the connection state.

FIG. 5 is a perspective view showing a third embodiment of the connection device.

FIGS. 6A and 6B are cross-sectional views showing different connection states of the above-mentioned connection fitting.

FIG. 7 is an exploded perspective view showing a fourth embodiment of the connection device.

FIGS. 8A and 8B are cross-sectional views showing different connection states of the connection fitting of the above.

9A is a front view showing the structure of a beam reinforcing bar, and FIG. 9B is a side view thereof.

[Explanation of symbols]

 11, 11a Connection fitting 13 Dharma hole 14 Enlarged diameter head 17 Connection part A Reinforcing bar

Claims (4)

[Claims] 1. A darma hole is provided in an opposing wall of a connection fitting, and at ends of rebars to be connected to each other through the connection fitting, a retaining shape is formed for a small diameter portion passing through a large diameter portion of the daruma hole. A rebar connection device for connecting a rebar through the connection fitting by providing an enlarged-diameter head that engages with the rebar, and engaging the end-diameter enlarged head of the rebar in the darma hole in a retaining shape. 2. A connecting member provided with a through hole in the opposing wall, a reinforcing bar connected to each other via the connecting member, and a connecting member for connecting the connecting member and the reinforcing bar in a retaining shape,
The connecting member is provided with a Dharma hole whose large diameter portion matches the through hole, and an enlarged diameter head is provided at the end of the reinforcing bar that passes through the large diameter portion of the Dharma hole and engages with the small diameter portion in a retaining shape. With the enlarged diameter head of the reinforcing bar inserted through the large diameter portion of the through hole and the darma hole of the connection fitting, the coupling member is moved to engage the small diameter portion with the enlarged diameter head of the reinforcing bar in a retaining shape. A rebar connection device for connecting rebars via the connection fittings by joining. 3. A bendable metal fitting comprises two connecting portions for connecting a reinforcing bar at both ends, a darma hole is provided in the connecting portion, and ends of the reinforcing bars to be connected to each other via the connecting metal. The part has a large-diameter head that passes through the large-diameter part of the daruma hole and engages with the small-diameter part in a retaining manner, and the end enlarged-diameter head of the reinforcing bar engages with the daruma hole in a retaining form. Thereby, a rebar connection device for connecting a rebar through the connection fitting. 4. A bendable metal fitting having two connecting portions at both ends for connecting a reinforcing bar and having a through hole in the connecting portion, and a reinforcing bar connected to each other via the connecting metal. , A connecting member and a connecting member for connecting the reinforcing bar in a retaining shape, the connecting member is provided with a darma hole having a large diameter portion adapted to the through hole, and the end portion of the reinforcing bar passes through the large diameter portion of the darma hole. Provide the enlarged diameter head that engages with the small diameter part in a retaining shape, and insert the coupling member with the enlarged diameter head at the end of the rebar inserted through the through hole of the connection fitting and the large diameter part of the Dharma hole. A rebar connection device for connecting a rebar via the connection fitting by moving the small-diameter portion to engage with the enlarged-diameter head of the rebar in a retaining shape.