JP2750668B2 - Rebar positioning spacer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spacer for positioning a reinforcing bar used for assembling a reinforcing bar in the construction of a concrete building.

[0002]

2. Description of the Related Art In the construction of a concrete building, when assembling a reinforcing bar, a spacer is used to secure an interval between the reinforcing bar and a concrete casting surface, that is, a cover thickness. A conventionally used spacer is generally a block made of concrete or plastic, and this block is interposed between a reinforcing bar and a temporary frame to secure a cover thickness.

[0003]

According to the above-mentioned conventional spacer, since there is no means for fixing the spacer to the temporary frame when the spacer is interposed between the reinforcing bar and the temporary frame, the impact caused by concrete casting is not taken. When another impact is received, the spacer interposed between the reinforcing bar and the temporary frame may shift or come off, and there is a problem that a predetermined cover thickness may not be secured.

In view of the above, the present invention has been made to be able to use a leveler for leveling a concrete casting surface so as to secure a predetermined cover thickness of a reinforcing bar, and to further provide a screw hole in a concrete surface. An object of the present invention is to provide a reinforcing-bar positioning spacer aiming at opening.

[0005]

According to the present invention, in order to achieve the above-mentioned object, a support comprising at least two rod-shaped support members whose ends can be connected and separated, and the support member are connected. And a reinforcing bar receiver for receiving a reinforcing bar provided on the formed support. In the support, of the support members constituting the support, of the support members located at both ends of the support One end of at least one of the support members is a non-connection side end, and a provisional frame fixing portion for fixing to the temporary frame is provided at the non-connection side end.

A screw hole is formed in the temporary frame fixing portion in the axial direction.

[0007]

According to the present invention, the support is fixed to the temporary frame by fixing the temporary frame fixing portion of the support member located on the end side of the support members constituting the support to the temporary frame. By making the rebar receiver provided on this support receive rebar, even if it receives an impact due to concrete casting or other impacts, the support does not come off the temporary frame, thereby securing a cover thickness for the rebar. Is done.

[0008] In addition, by setting the height (length) of the support to a concrete casting thickness, the tip of the support is leveled at the concrete casting surface.

Furthermore, since the temporary frame fixing portion provided at the non-connection side end of the support member located at the end side of the support has a screw hole formed in the axial direction, the screw hole is opened in the concrete surface,
Various articles can be easily attached to the concrete surface by using the screw holes.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings. FIG. 1 shows an embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a support, and this support 1 has three rod-shaped support members 2 capable of connecting and disconnecting ends.
a, 2b, and 2c. Support members 2a,
Of the support members 2a and 2c, one end of each of the support members 2a and 2c that constitutes both ends of the support 1 is a non-connection side end that is not connected to another support member 2b. Is provided with a temporary frame fixing portion 3 for fixing the end portion to the temporary frame. The temporary frame fixing portion 3 is not particularly limited as long as it can fix the ends of the support members 2a and 2c to the temporary frame. In this embodiment, a flange portion 4 having a nail hole 5 is provided at an end of each of the support members 2a and 2c, and the flange portion 4 is used as a temporary frame fixing portion 3. This temporary frame
A screw hole 6 is formed in the fixing portion 3 in the axial direction.

A male screw 7 is provided at the connection end of one of the support members 2a and 2c on the axis. A female screw 8 to which the male screw 7 can be screwed is formed on the axis at the connection side end of the other support member 2c. In addition, a female screw 9 that can be screwed into a male screw 7 provided on the support member 2a is formed on one end of the support member 2b that forms the middle of the support body 1, and the other end is formed on the other end. Is a female screw 8 formed on the support member 2c.
Is provided on the shaft center. The support members 2a, 2b, 2c have the same diameter, and the outer periphery thereof has external thread portions 11a, 11b,
11c is formed.

Reference numeral 12 denotes a reinforcing bar receiver provided on the support 1 formed by connecting the support members 2a, 2b, 2c. The reinforcing bar receiver 12 has an inner peripheral surface on which the support members 2a,
An annular body 14 having a female threaded portion 13 that can be screwed to the male threaded portions 11a, 11b, 11c of 2b and 2c, and a receiving portion 15 protruding from the annular body 14 is formed. Reference numeral 16 denotes the male screw portions 11a, 11b, 11 of the support members 2a, 2b, 2c.
c, and the rebar receiver 1 similarly screwed to the male screw portions 11a, 11b, 11c of the support members 2a, 2b, 2c.
This is a detent for preventing rotation of 2. In this example,
Although the provisional frame fixing portion 3 is provided at the non-connection side ends of both the support members 2a and 2c, it may be provided at only one of them.

FIG. 2 shows another embodiment of the present invention. In this embodiment, two rods 17 are protruded at appropriate positions outside each of the support members 2a, 2b, 2c, and are connected to a reinforcing bar. Receiver 12
And In this embodiment, each support member 2a, 2b,
The position of the reinforcing bar receiver 12 provided on the reinforcing bar 2c is set in accordance with the cover thickness. A plurality of support members 2a, 2b, 2c having different positions of the reinforcing bar receiver 12 are prepared, and the positions are adjusted according to the cover thickness. The support members 2a, 2b, 2c are used.

Next, an example of use of the above embodiment will be described. FIG. 3 shows an example in which the spacer shown in the embodiment of FIG. 1 is used for reinforcing bars such as walls, beams and columns. First, support members 2a, 2b, 2c having a length corresponding to the wall thickness, the beam thickness, and the column thickness are selected, and a necessary number of reinforcing bar receivers 12 are screwed in advance on the outer periphery of each of the support members 2a, 2b, 2c. Then, each of the support members 2a, 2b,
2c are connected to form the support 1.

Next, the support 1 is positioned between the provisional frames 17 and 18 where the reinforcing bars have been arranged, and the provisional frame fixing portion 3 of the support member 2a is brought into contact with one of the provisional frames 17 and fixed with nails 19. Similarly, the temporary frame fixing portion 3 of the support member 2c is fixed to the other temporary frame 18 with the nail 19, and the reinforcing bar 20 arranged by the reinforcing bar receiver 12 screwed to the support 1 is removed. Receive at the position of the cover thickness. As a result, the reinforcing bar 20 is supported at the position of the cover thickness, and the support 1 is fixed to the temporary frames 17 and 18 even when receiving an impact such as casting of concrete, so that the cover thickness of the reinforcing bar 20 is secured. Is done. Such use also exerts a function as a separator, and can be used as a spacer at the same time as being used as a spacer.

FIG. 4 shows an example in which the spacer shown in the embodiment of FIG. 2 is used for reinforcing the slab. First, the reinforcing bar receiver 1 is set at a length corresponding to the slab thickness and at a position corresponding to the cover thickness.
2. Select the supporting members 2a, 2b, 2c provided with 2,
These are connected to form the support 1.

Next, the support 1 is positioned on the provisional frame 17 where the reinforcement is completed, the provisional frame fixing portion 3 of the support member 2a is fixed to the provisional frame 17 with the nail 19, and 12
At the position of the cover thickness.

As a result, the reinforcing bar 20 is supported at the position of the cover thickness, and the support 1 is fixed to the temporary frame 17 even if it receives an impact such as casting of concrete.
Cover thickness is secured. Further, since the length of the support 1 is a length corresponding to the thickness of the slab, the tip of the support 1, that is, the non-connection side end of the support member 2c is at the level of the concrete casting surface, and It is also a leveler.

In the example of use shown in FIGS. 3 and 4, the support 1 is fixed to the temporary frames 17 and 18 by the nail 19 through the nail hole 5 formed in the flange 4.
As shown in FIG. 5, the fixing may be performed by using a screw hole 6 formed in the temporary frame fixing portion 3 and screwing a fixing bolt 21 into the screw hole 6.

As described above, on the concrete surface formed by using the spacer according to the present invention, the support members 2a and 2c constituting both ends of the support 1 are formed at the non-connection side ends. Since the screw hole 6 is opened, this screw hole 6
The various articles are attached to the concrete surface via appropriate bolts using the above.

[0021]

As described above, according to the spacer for positioning a reinforcing bar according to the present invention, the cover thickness of the reinforcing bar can be reliably maintained, and the reinforcing bar can be used as a leveling surface for concrete. Has an effect that various articles can be easily attached to a concrete surface.

[Brief description of the drawings]

FIG. 1 is a vertical sectional front view showing an embodiment of the present invention.

FIG. 2 is a front view showing another example of the present invention.

FIG. 3 is an explanatory view showing a usage example of the present invention.

FIG. 4 is an explanatory view showing a usage example of the present invention.

FIG. 5 is an explanatory diagram showing a usage example of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Support body 2a, 2b, 2c Support member 3 Temporary frame fixing part 4 Flange 5 Nail hole 6 Screw hole 7 Male screw 8 Female screw 9 Female screw 10 Male screw 11a, 11b, 11c Male screw part 12 Rebar receiver 13 Female screw part 14 Ring body 15 Receiver Part 16 Detent 17 Temporary frame 18 Temporary frame 19 Nail 20 Reinforcing bar 21 Fixing bolt

Claims (1)

(57) [Claims] 1. A support comprising two or more rod-shaped support members whose ends can be connected and separated, and a reinforcing bar receiver provided on the support formed by connecting the support members and receiving a reinforcing bar. In the support, among the support members constituting the support, one end of at least one of the support members located at both ends of the support is a non-connection side end, At the non-connection side end, a temporary frame fixing portion for fixing to the temporary frame is provided , and a screw hole is formed in the temporary frame fixing portion in the axial direction.
A spacer for positioning a reinforcing bar.