JP2512123Y2 - Reinforcing bar spacer - Google Patents

Description

[Detailed description of the device]

[0001]

[Industrial application] The present invention is a reinforcing bar spacer, especially R
The present invention relates to a reinforcing bar spacer that regulates the installation position of a reinforcing bar such as a stirrup when the reinforcing bar of the C member is assembled.

[0002]

2. Description of the Related Art When assembling RC members, stirrup or other reinforcing bars surround the main bars in a substantially right angle direction with a prescribed interval calculated from the quality strength of the RC members in the axial direction of the main bars. Arranged. At this time, in order to accurately set the prescribed interval, for example, in the case of the Pca member, a mark is previously attached to the side of the mold frame at the position where the stirrup comes.
In addition, in order to prevent the stirrup from being displaced or tilted from the specified position due to concrete driving or the like, the present situation is to fix the intersections of the main bar and the stirrup at a plurality of points with binding wires.

[0003]

However, it is difficult to preliminarily provide a mark for determining the position of the stirrup in the case of on-site casting, and it may disappear over time. Furthermore, the installation of the binding wire requires a lot of time,
It is a hindrance to work efficiency.

The present invention has been made by paying attention to the above-mentioned harmful effects, and the purpose thereof is to easily determine the installation position of a reinforcing bar such as a stirrup bar arranged so as to intersect with the main bar and to eliminate the need for a binding wire. The purpose is to provide a rebar spacer.

[0005]

The reinforcing bar spacer of the present invention achieves the above-mentioned object, and its gist is to provide a long and slender structure.
A rod-like spacer body, and a plurality of gripping portions for gripping a plurality of reinforcing bars, such stirrup being Haisuji to intersect the main reinforcement, a plurality of gripping portions, as defined in the axial direction of the main reinforcement The spacer body is provided so as to match the installation positions of the reinforcing bars arranged at intervals, and each of the gripping parts forms a part of the spacer body.
A pair of grips that are bent in a direction orthogonal to
Made of material, and each of these gripping members protrudes outward in a V shape.
Form an expansion space that receives the rebar
The bent part that is formed and the outer part of the bent part
And a lower end portion directed to the side .

[0006]

In the reinforcing bar spacer of the present invention, the intervals between the reinforcing bars can be determined by gripping the reinforcing bars arranged to intersect the main bars with the gripping portions. In addition, since a plurality of grips are installed on the spacer body, by gripping a plurality of reinforcing bars by each gripping section, the reinforcing bars become a series through the spacer body, and the slidability of the reinforcing bars with respect to the main bars decreases.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a perspective view showing a reinforcing bar spacer I of the present invention. The reinforcing bar spacer I is a spacer body 10 which is an elongated steel member having a U-shaped cross-section that opens upward.
And a plurality of stirrup grips 20 provided below the bottom 11 of the main body 10. In the longitudinal direction of the main body 10, each gripping portion 20 is spaced at a predetermined interval so as to match the installation position of the stirrup arranged at a specified spacing in the axial direction of the main reinforcing bar when the RC members are assembled. It is provided.

FIG. 2 is a partially enlarged view showing the reinforcing bar spacer I partially transparently. The stirrup grip 20 is formed by pressing two left and right portions into a U-shape that faces inward, leaving opposite sides with a space A between them on the bottom 11, and bending them downward by about 90 °. It is composed of left and right gripping members 20a and 20b. FIG. 3 shows a side view of the stirrup grip 20. Each of the gripping members 20a and 20b has a dogleg-shaped bent portion 20 in which the vicinity of the central portion projects outward.
and a ', 20b' and lower end portions 20a ", 20b" which are continuous with the bent portion and extend outward in a divergent manner. The gap A between the gripping members 20a and 20b is provided slightly smaller than the diameter of the stirrup 30 (the cross section is shown by the broken line) gripped by the gripping part 20, and the space expanded by the bent parts 20a ′ and 20b ′ is the stirrup. Over 30 diameters.

The stirrup grip 20 has a lower end 20.
The stirrup 30 is received from a ", 20b" into the expansion space formed by the bent portions 20a ', 20b', and is gripped.

Next, one usage mode of the reinforcing bar spacer I will be described. FIG. 4 is a plan view of the inside of the formwork 40 of the Pc girder as seen from above, and schematically shows the reinforcing bar arrangement before concrete placement. FIG. 5 is a schematic cross-sectional view taken along the CC line in FIG. As shown in FIG. 5, four Pc steel materials 31 as main rebars arranged in the longitudinal direction of the form 40 are installed in the upper and lower stages, respectively. However, in FIG. Is shown and the lower part is omitted.

The reinforcing bar spacer I is installed in parallel with the Pc steel material 31, and the stirrup 30 is gripped by each gripping portion 20 provided in advance so as to come to the installation position of the stirrup 30, and the stirrup in the axial direction of the steel material 31 is held. The installation interval of 30 is specified. Further, since two spacers I are installed in the upper tier and one in the lower tier, the stirrup 30 is not displaced or tilted when concrete is poured, and the intersection of the stirrup 30 and the Pc steel material 31 is bounded by a binding line. No need to fix. Concrete is placed in the form 40 in this state, but since the reinforcing bar spacer I is a steel member, it does not affect the quality of the Pc girder and can reinforce the strength of the girder as a steel material.

The reinforcing bar spacer of the present invention can be used not only in the Pc girders described above but also in Pca floor slabs, sleepers or cast-in-place PC members, and the shape and the like are not limited to those of this embodiment. .

[0014]

[Effects of the Invention] As described above, with the reinforcing bar spacer of the present invention, the installation position of the reinforcing bar such as stirrup can be easily determined, and no binding wire is required. It can be increased and the construction period can be shortened.

[Brief description of drawings]

FIG. 1 is a perspective view showing a reinforcing bar spacer of the present invention.

FIG. 2 is a partially enlarged view showing a reinforcing bar spacer partially transparent.

FIG. 3 is a side view showing a grip portion 20 that grips a stirrup.

FIG. 4 is a schematic plan view of the inside of a Pc girder form seen from above.

5 is a cross-sectional view taken along the direction CC of FIG.

[Explanation of symbols]

 I Reinforcing bar spacer 10 Spacer body 11 Bottom part 20 Gripping part 30 Stirrup 31 Pc steel 40 Form

Claims (1)

(57) [Scope of utility model registration request] And 1. A slender rod-like spacer body, and a plurality of gripping portions for gripping a plurality of reinforcing bars, such stirrup being Haisuji to intersect the main reinforcement, a plurality of gripping portions,
It is provided on the spacer main body so as to match the installation position of the reinforcing bar arranged at a prescribed interval in the axial direction of the main bar, and each of the gripping parts is a part of the spacer main body.
By bending in a direction orthogonal to the spacer body
It consists of a pair of facing gripping members, each gripping member
It projects so that it protrudes to the side and sandwiches the reinforcing bar.
The bending part that forms the expansion space for insertion and the connection to this bending part.
A reinforcing bar spacer, characterized in that it further includes a lower end portion facing outward in a flared shape .