JPH0230569Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a reinforcing bar spacing holder that can stably and reliably position vertical reinforcing bars and horizontal reinforcing bars during reinforced concrete construction, and can reliably hold the reinforcing bars in the correct position.

Therefore, during reinforced concrete construction, there is a spacer for reinforcing bars described in Japanese Utility Model Application Publication No. 111615/1983 that can be used to position vertical reinforcing bars and horizontal reinforcing bars and hold the reinforcing bars in the correct position. The spacer body has a leg projecting downward from a substantially central portion of the spacer body, and a cylindrical body that is integrated with the leg and has a through hole penetrating the spacer body vertically. The spacer for reinforcing bars has a pair of left and right arms each having a reinforcing bar support part with an insertion part that communicates with the clamping hole. Since the sections are integrally formed, the structure is complicated, and the legs that act as anchors in the concrete may break during concrete pouring, resulting in stable support of the reinforcing bars in both the vertical and horizontal directions. There are disadvantages such as the concrete becoming hard to form or causing cracks in the concrete after curing.Also, since the reinforcing bar support part is a flat plate with a roughly U-shaped frontal shape, Not only is it impossible to reduce the impact by bending it to the side, but it also causes breakage of the reinforcing bar support and misalignment of the reinforcing bars, making it difficult to position the reinforcing bars with good stability and reliably, and to securely hold the reinforcing bars in the correct position. It had the disadvantage that it could not be done.

In view of these drawbacks, the present invention has a main body of a reinforcing bar spacing holder having long arms and short arms formed in a symmetrical direction, and an arm formed orthogonally to these arms having approximately the same width as the long arms. The arms were formed into a symmetrical shape with the same length as appropriate, and the intersection of each arm was formed in the shape of a cross with the intersection being biased toward the shorter and shorter arms, with a through hole penetrating vertically below the base of the longer arm. The other two arms have a protruding cylindrical body and are adjacent to the arm having the cylindrical body.
A clamping hole and a reinforcing bar insertion port communicating with the clamping hole are cut out on the base of the arm of the book, and a reinforcing bar support part having a cylindrical outer peripheral wall surface is erected,
Further, a pair of ribs are integrally formed on the outer peripheral wall surface of the reinforcing bar support part in a direction perpendicular to the arm, each pair of ribs becoming thicker as they go downward from the top end of the reinforcing bar support part to the lower end surface of the arm. This is an attempt to overcome the above drawbacks.

An embodiment of the present invention will be described below based on the drawings. 1 is a reinforcing bar spacing holder main body having four straight arms 2, 3, 3', and 4 that are orthogonal to each other. Among these arms, one arm 2 is formed to be significantly longer in length and width than the arm 4 in the symmetrical direction, while arms 3 and 3' are formed perpendicular to the arms 2 and 4. is formed into a symmetrical shape having approximately the same width and the same appropriate length as the arm 2, and the overall shape of the main body 1 is made into an arm 4 in which the intersection portion 5 of each arm 2, 3, 3', 4 is short and small.
It has a cruciform shape that is biased in the direction.

Next, a cylindrical body 8 having a vertically penetrating through hole 7 is protruded below the base 6 of the arm 2, and two other arms 3, 3 adjacent to the arm 2 having the cylindrical body 8 are provided. ′
Clamping holes 10, 10' and reinforcing bar insertion holes 11, 1 communicating with the clamping holes 10, 10' are provided on the bases 9, 9' of the
Reinforcing bar support portions 12, 12' with cutouts 1' are provided upright.

The reinforcing bar supports 12 and 12' have outer circumferential walls formed in a cylindrical shape, and the reinforcing bar supports 1 are formed on the outer circumferential walls.
Each pair of ribs 1 extend from the top end of 2, 12' to the lower end surface of arms 3, 3' and gradually become thicker downward.
3, 13', 14, 14' are integrally formed in a direction orthogonal to the arms 3, 3'.

Note that 15, 16, 16', and 17 are arms 2, 3, and 17, respectively.
3', 4 are ribs integrally formed in the longitudinal direction of the lower surface, and are raised at the proximal end of the rib 15 of the arm 2. The joint 18 and each rib 16, 1 of the arms 3, 3', 4
The connecting portions 19 where 6' and 17 intersect are formed integrally with the symmetrical side wall portions of the cylindrical body 8, respectively.

A vertical reinforcing bar 20 is inserted into the through hole 7 of the cylinder 8, and the reinforcing bar insertion opening 11 of the reinforcing bar support part 12, 12'
The horizontal reinforcing bars 21 are inserted into the clamping holes 10, 10' from 11', so that the vertical reinforcing bars 20 and the horizontal reinforcing bars 21 cross and contact each other on the center part of the reinforcing bar spacing holder body 1.

In short, the present invention has a long arm 2 and a short and small arm 4 formed in the reinforcing bar spacing holder main body 1 in a symmetrical direction, and arms 3 and 3' formed orthogonally to these arms 2 and 4. Each arm 2, 3, 3',
The intersecting portions 5 of the arms 2 are formed in a cross shape that is biased in the direction of the short and small arms 4, and a cylindrical body 8 having a through hole 7 penetrating vertically is provided protruding below the base 6 of the long arm 2. Another 2 adjacent to the arm 2 having the cylindrical body 8
On the bases 9, 9' of the book arms 3, 3', the clamping holes 10,
10' and reinforcing bar insertion ports 11, 11' communicating with the clamping holes 10, 10' are cut out, and the outer peripheral wall surface is formed into a cylindrical shape.
2' are set upright, so when arranging the vertical reinforcing bars 20 and horizontal reinforcing bars 21, the required number ( At the same time, the horizontal reinforcing bars 21 are inserted into the holding holes 10, 10' of the arms 3, 3' that are perpendicular to the long arms 2, and 21 are horizontally arranged side by side with a predetermined interval, the vertical reinforcing bars 20 are inserted into the through holes 7 of the cylindrical body 8 and come into surface contact with the cylindrical body 8, so that the vertical reinforcing bars 20
are positioned in a completely upright state, and the horizontal reinforcing bars 21 are inserted into the clamping holes 10 and 10 of the reinforcing bar supports 12 and 12'.
The vertical reinforcing bars 20 and the horizontal reinforcing bars 2
1 are in cross-contact with each other on the central part of the main body 1, so that the main body 1 forming a cross shape allows the vertical reinforcing bars 20 and the horizontal reinforcing bars 21
can be stably supported both vertically and horizontally, so the long arm 2 can be maintained in a horizontal state at all times. Therefore, if the formwork is installed so that it touches the tip of the long arm 2, the vertical reinforcing bar The distances between the formwork and the horizontal reinforcing bars 20 and 21 can be reliably maintained constant, and the vertical reinforcing bars 20 and the horizontal reinforcing bars 21 are firmly held perpendicularly by the main body 1 even during concrete pouring.
There is no displacement of the vertical reinforcing bars 20 and horizontal reinforcing bars 21, which prevents the formwork from shifting due to movement of the tips of the long arms 2, etc. Also, the long arms 2 buried deep in the concrete stabilize the main body 1. It is possible to firmly support the vertical reinforcing bars 20 inserted into the cylinder 8 of the long arm 2, and since the arm 4 in the symmetrical direction of the long arm 2 is short and small, the main body The overall length of main body 1 is kept to an appropriate size, and the length of main body 1 is
It is possible to prevent bending, breakage, cracking of concrete after curing, etc., and since the outer peripheral wall surface of the reinforcing bar support parts 12, 12' is formed into a cylindrical shape, the impact on the reinforcing bar support parts 12, 12' when pouring concrete can be prevented. can be relaxed by warping laterally, and therefore the reinforcing bar holding portion 12,
12' breakage and displacement of the horizontal reinforcing bar 21 can be prevented.
Further, on the outer circumferential wall surface of the reinforcing bar support parts 12, 12', each 1 is gradually thickened as it goes downward from the top end of the reinforcing bar support part 12, 12' to the lower end surface of the arms 3, 3'.
The pair of ribs 13, 13', 14, 14' are connected to the arms 3, 3'
Since the reinforcing bars 12, 12' are integrally formed in the direction orthogonal to the arms 3, 3', the support in the orthogonal direction to the arms 3, 3' is strengthened, and it is possible to prevent the horizontal reinforcing bars 21 from shifting or bending in that direction. The practical effects are enormous.

[Brief explanation of the drawing]

The figure shows one embodiment of the present invention.
The figure is a front view of the reinforcing bar spacing holder according to the present invention.
The figure is a plan view of the same as the above, FIG. 3 is a rear view of the same as the above, and FIG. 4 is a perspective view showing the state of use. 1... Rebar spacing holder body, 2, 3, 3', 4
...Arm, 7...Through hole, 8...Cylinder, 10,10'
...Holding hole, 11, 11'...Reinforcing bar insertion port, 12,
12'...Reinforcement support part, 13, 13', 14, 1
4'...Rib.

Claims (1)

[Scope of utility model registration request] The main body of the reinforcing bar spacing holder is formed in a symmetrical direction, with long arms and short and small arms, and the arms formed perpendicular to these arms are approximately the same width as the long arms, and are appropriately symmetrical with the same length. The cross-section of each arm is shaped like a cross, with the intersection of each arm biased toward the short and small arms.
A cylindrical body with a through hole penetrating vertically is protruded below the base of the long arm, and a clamping hole and a corresponding cylindrical body are provided on the bases of the other two arms adjacent to the arm having the cylindrical body. A reinforcing bar insertion opening that communicates with the clamping hole is cut out, and a reinforcing bar support part whose outer peripheral wall surface is formed into a columnar shape is erected, and further extends from the top end of the reinforcing bar supporting part to the lower end surface of the arm on the outer peripheral wall surface of the reinforcing bar supporting part. A reinforcing bar spacing holder characterized in that each pair of ribs is formed integrally with the arm in a direction perpendicular to the arm, the ribs becoming thicker as they go downward.