JP3057219U - Spacer for reinforcement - Google Patents

Abstract

(57) [Summary] [PROBLEMS] The present invention does not deform during transportation or construction, is suitable for transportation, is easy to attach to a reinforcing material, and is easy to insert into a hole. It is an object to provide a spacer for a reinforcing material which does not shift. SOLUTION: As means for solving the above problems,
The present invention relates to a reinforcing material spacer which is mounted on the outer periphery of a reinforcing material such as a steel wire or a steel rod to be installed in the ground or a bedrock for the purpose of reinforcing to prevent a bias in the installation position of the reinforcing material. A cylindrical holding portion that holds the outer periphery of the material, and a space holding portion that protrudes from the cylindrical holding portion and holds a predetermined space between the hole wall of the installation hole for the reinforcing material and the reinforcing material, Provided is a spacer for a reinforcing material, which is configured to be openable and closable by providing a dividing portion over the entire length in the axial direction.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a spacer for a reinforcing material.

[0002]

[Prior art]

 As a spacer for reinforcing materials that is installed around the reinforcing material such as a steel wire or a steel rod to be installed in the ground or rock for the purpose of reinforcement to prevent the installation position of the reinforcing material from being biased, it has been conventionally used. , 6 are used.

The spacer a is made of metal and is formed in a lantern shape. The spacers a1 and a2 are connected to each other by band-shaped connecting portions a3 to a7. It has an opening a8.

At the time of use, it is attached to the outer periphery of a reinforcing material b such as a PC steel wire or a lock bolt at an appropriate interval, and inserted into a hole c excavated in the ground or the like. Thereby, the reinforcing member b is located at the axial center of the hole c, and it is possible to prevent the installation position from being biased.

[0005]

[Problems to be solved by the invention]

 The above prior art has the following problems. <A> Since the conventional spacer a is a metal lantern type, it may be crushed during transportation or construction, and may not serve as a spacer.

<B> The lantern type is bulky and inconvenient for transportation.

<C> When the reinforcing material is inserted into the hole, the spacer a may be shifted.

<4> Since the mounting is performed by bending and opening, covering the reinforcing material, and bending and closing, the mounting operation is complicated and accurate mounting is difficult.

[0009]

[Purpose of the invention]

 The present invention has been made to solve the above-mentioned problems, and does not deform during transportation or construction, is suitable for transportation, and can be easily attached to reinforcing materials. It is another object of the present invention to provide a spacer for a reinforcing material which does not shift when inserted into a hole.

[0010]

[Means for Solving the Problems]

 As a means for solving the above-mentioned problems, the present invention is defined in claim 1 as being attached to the outer periphery of a reinforcing material such as a steel wire or a steel rod to be installed in the ground, rock, etc. for the purpose of reinforcing, and installing the reinforcing material. In a spacer for a reinforcing material for preventing unevenness of the reinforcing member, a cylindrical holding portion for holding an outer periphery of the reinforcing material, and a space between the reinforcing member and a hole wall of a mounting hole for the reinforcing material protruding from the cylindrical holding portion. A spacer for a reinforcing member, comprising: a space holding portion for holding a predetermined space, and a breakable portion provided over the entire length in the axial direction so as to be openable and closable.

According to a second aspect of the present invention, in the spacer for a reinforcing material according to the first aspect, the space holding portion is divided into two parts over the entire length in the axial direction, and the leading ends of the divided parts are connected to each other. A spacer for a reinforcing material, wherein the spacer is connected to each other and opened and closed by bending the connecting portion.

According to a third aspect of the present invention, in the spacer for a reinforcing member according to the first or second aspect, the spacer is projected to the inner peripheral surface side of the cylindrical holding portion and engaged with the peripheral surface of the reinforcing member. Provided is a spacer for a reinforcing material, which is provided with a dovetail.

According to a fourth aspect of the present invention, in the spacer for a reinforcing material according to the third aspect, a plurality of engaging claws are provided so that the engaging claws are engaged along a thread groove formed on a peripheral surface of the reinforcing material. Provided is a spacer for a reinforcing material, wherein a position of the engaging claw is shifted.

According to a fifth aspect of the present invention, in the spacer for a reinforcing material according to the third or fourth aspect, the engaging claw is a tip of an arm protruding in an axial direction from an end of the cylindrical holding portion. A spacer for a reinforcing material, which is provided on an inner peripheral surface side of a portion.

According to a sixth aspect of the present invention, there is provided the reinforcing material spacer according to any one of the first to fifth aspects, wherein an engaging portion of a restraining band is provided on an outer peripheral surface. Provide a spacer.

According to a seventh aspect of the present invention, in the spacer for a reinforcing material according to the sixth aspect, the locking portion of the binding band is provided with an arm protruding in the axial direction from an end of the cylindrical holding portion. And a spacer for a reinforcing material, which is provided on the outer peripheral surface side of a tip portion of the reinforcing member. Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0017]

[Embodiment of the invention]

 The spacer 100 of the present invention is formed of a material such as plastic and includes the following components.

<A> Cylindrical Holding Section The cylindrical holding section is a cylindrical body for holding the outer periphery of the reinforcing member and mounting the spacer 100 on the outer periphery of the reinforcing member, as shown in FIGS. As described above, the holding portions 110 and 120 obtained by dividing the cylindrical body into two parts are connected to each other.

The holding parts 110 and 120 are configured to be opened and closed by a dividing part 111 provided over the entire length in the axial direction. In addition, mortar inlets 112, 113, 121, 122 are appropriately opened so that mortar or the like filled in the installation hole of the reinforcing material can fill the gap between the spacer 100 and the reinforcing material.

Note that the cylindrical holding portion employs various cross-sectional shapes such as a cylindrical shape and a rectangular cylindrical shape according to the cross-sectional shape of the reinforcing material. Further, the cylindrical holding portion may be divided into three or more. Further, the number of mortar inlets to be opened is not particularly limited and is determined as appropriate.

<B> Spacing Holder The spacing holding portion is provided to project from the cylindrical holding portion and to maintain a predetermined spacing between the hole wall of the installation hole for the reinforcing material and the reinforcing material. . Although various shapes of the space holding portion are conceivable, for example, as shown in FIGS. 2 to 4, a plurality of spaces are provided on the peripheral surfaces of the holding portions 110 and 120 over the entire length in the axial direction and in a direction perpendicular to the axis. It is conceivable that the wing-shaped interval holding portions 130, 131, 132, 133 are protruded.

Then, as shown in FIG. 3, one location 130 of the interval holding section is divided into 130 a and 130 b over the entire length in the axial direction, and the leading ends of these divided bodies are connected to each other by the connecting section 140. Link. Therefore, the spacer 100 is configured to be openable and closable by bending using the material flexibility of the connecting portion 140 or the like.

Further, a stopper 141 is protruded from the inner surface of the space holding portion 130a, and an engagement hole 142 is formed on the inner surface of the space holding portion 130b at a corresponding position to be engaged with the stopper 141. Therefore, the spacer 100 can be opened and closed by attaching and detaching the stopper 141. The shape, size, number of protrusions, and positions of protrusions of the space holding part are appropriately set according to the construction conditions.

<C> Engaging Claw The engaging claw is projected from the inner peripheral surface side of the cylindrical holding portion to engage with the peripheral surface of the reinforcing member to prevent the spacer 100 from shifting. is there. Various shapes, dimensions, numbers and positions of the engaging claws can be considered. For example, as shown in FIGS. 2 and 3, the arms 150 and 151 extend in the axial direction from the tips of the holding portions 110 and 120. , 152, 153 are protruded, and engagement claws 160, 161, 162, 163 are protruded on the inner peripheral surface side of the tip portion.

At this time, as shown in FIG. 1, when the reinforcing member is attached to the threaded steel bar 200 having a thread groove on the peripheral surface, the engaging claws 160 to 163 are engaged along the thread groove. The length of each of the arms 150 to 153 is set so as to gradually decrease in the circumferential direction. The length of each of the arms 150 to 153 may be set in a stepped manner, that is, the arm 150 may be set to a length that allows each of the engaging claws 160 to 163 to engage with the thread groove.

<D> Restriction Band Locking Part The restriction band locking part is provided on the outer peripheral surface of the spacer 100 in the circumferential direction. Although the shape, size, number of installations, installation positions, and the like of the restraining band locking portion may be variously considered, for example, as shown in FIGS. The steps formed by the projections are referred to as restraint band locking portions 170, 171, 172, 173.

<E> Mounting Method Next, a method of mounting the spacer 100 configured as described above to a reinforcing material such as a threaded steel bar 200 having a thread groove shown in FIG. 1 will be described. First, as shown in FIG. 3, the spacer 100 is opened by opening the connecting portion 140 from the dividing portion 111 by bending the connecting portion 140.

Next, as shown in FIG. 1, the holding portions 110 and 120 are fitted to the peripheral surface of the threaded steel bar 200 and closed, and the stopper 141 is engaged with the engaging hole 142 and fixed. At this time, it is confirmed that each of the engaging claws 160 to 163 is securely engaged with the thread groove of the threaded steel bar 200.

As long as the stopper 141 has a strong restraining force, the stopper 141 may be left as it is, but in order to mount the stopper more securely, the restraint band 300 is wound around the restraint band locking portions 170 to 173 and restrained. This completes the mounting work.

[0030]

[Effect of the invention]

 Since the present invention is as described above, the following effects can be obtained. <B> There is no danger of crushing because it can be transported in the open state, and there is no danger of crushing during construction work because it can be attached to the reinforcing material with one touch. Therefore, it can sufficiently fulfill its role as a spacer.

<B> Since the transfer can be performed in an open state, the transfer is not bulky and is suitable for the transfer.

<C> Since the engaging claw engages with the peripheral surface of the reinforcing member, there is no possibility that the spacer is displaced when the reinforcing member is inserted into the hole, and the reinforcing member can be arranged at an accurate position. it can. In addition, since the restraining band can be mounted without shifting by providing the locking portion, the shift of the spacer can be more reliably prevented.

<D> Since the reinforcing member can be attached to the reinforcing member with one touch simply by opening and closing, the attaching operation can be performed easily and accurately.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a use state of a spacer according to the present invention.

FIG. 2 is a perspective view of the spacer of the present invention in a closed state.

FIG. 3 is a perspective view of the open state of the spacer of the present invention.

FIG. 4 is a sectional view taken along line IV-IV of FIG. 2;

FIG. 5 is an explanatory view of a conventional technique.

FIG. 6 is an explanatory view of a conventional technique.

Claims (7)

[Utility model registration claims] 1. A reinforcing material spacer which is attached to the outer periphery of a reinforcing material such as a steel wire or a steel rod to be installed in the ground or a bedrock for the purpose of reinforcing, thereby preventing a bias in the installation position of the reinforcing material. A cylindrical holding portion for holding the outer periphery of the reinforcing member, and a spacing holding portion projecting from the cylindrical holding portion and holding a predetermined interval between the hole wall of the installation hole for the reinforcing material and the reinforcing material. A spacer for a reinforcing material, characterized in that it is configured to be openable and closable by providing a dividing portion over the entire length in the axial direction. 2. The spacer for a reinforcing material according to claim 1, wherein the spacing member is divided into two parts over the entire length in the axial direction, and the leading ends of these divided members are connected by a connecting part. A spacer for a reinforcing material, characterized in that the connecting portion is opened and closed by bending the connecting portion. 3. The space for reinforcing material according to claim 1 or 2.
In the first aspect, an engaging claw that is protruded toward the inner peripheral surface side of the cylindrical holding portion and that engages with the peripheral surface of the reinforcing member is provided.
Spacer for reinforcement. 4. The spacer for reinforcing material according to claim 3, wherein a plurality of engaging claws are provided, and the positions of the engaging claws are engaged so as to engage along a thread groove formed on a peripheral surface of the reinforcing material. A spacer for a reinforcing material, wherein the spacer is shifted. 5. The space for reinforcing material according to claim 3 or 4.
A spacer for a reinforcing material, wherein the engaging claw is provided on an inner peripheral surface side of a tip end portion of an arm protruding in an axial direction from an end portion of the cylindrical holding portion. 6. The spacer for a reinforcing material according to claim 1, wherein a retaining portion of a restraining band is provided on an outer peripheral surface. 7. The spacer for a reinforcing material according to claim 6, wherein the locking portion of the restraining band has an outer peripheral surface at a tip end of an arm protruding in an axial direction from an end of the cylindrical holding portion. A spacer for a reinforcing material, which is provided on the side.