JPH1150598A - Synthetic resin spacer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To select a prescribed cover thickness by providing a spacer main body, a fitting section for inserting the spacer main body to a reinforcing bar from the outside, and contact sections with a form on the peripheral section of the spacer main body. SOLUTION: A spacer main body 1 having a nearly rectangular shape and made of a synthetic resin is molded, a fitting section for inserting and coupling the spacer main body 1 to a reinforcing bar from the outside is provided, and the sides 1a-1d of the spacer main body 1 are used as contact sections with a form. An insertion passage 3 and the fitting section 2 are provided toward the center from the middle section of one long side 1a of the spacer main body 1, planar open angle-shaped hold sections 2a are provided at intervals of 90 deg. on the fitting section 2, and the reinforcing bar is restrained by the holding spring action. The spacer main body 1 is rotated by 90 deg. CW or CCW against the reinforcing bar, the short side 1c or 1d is brought into contact with the form, and the straight distance is selected as the cover thickness of the reinforcing bar. This spacer can be concurrently used for various sizes, the number of types is reduced, and stock control can be facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spacer made of a synthetic resin, and more particularly to a spacer made of a synthetic resin for forming a gap corresponding to a cover thickness between a mold and a reinforcing bar.

[0002]

2. Description of the Related Art Conventionally, as shown in Japanese Utility Model Laid-Open Publication No. 57-199624 and Japanese Utility Model Laid-Open Publication No. Hei 7-19435, this type of spacer has a mounting portion to a reinforcing bar at the center of a circular spacer body. There has been proposed a configuration in which a gap corresponding to the radius of the spacer body and thus a cover thickness can be formed between the frame and the reinforcing bar.

[0003]

The rebar cover thickness is not uniform and often varies depending on the scale of the construction. However, conventionally, this type of spacer has a circular main body and can only form a kind of cover thickness corresponding to its radius, so conventionally, many types of spacers are prepared for each cover thickness, and from that, We select and use the one that suits the situation at the construction site. For this reason, the manufacturer has to prepare a large number of types of spacers, which makes inventory management very troublesome, increases the inventory amount, and increases the product cost. Also,
Even at the same construction site, for example, walls and pillars usually have different cover thicknesses, and multiple types of spacers of different dimensions are often used, and inventory management etc. at the construction site as well as the manufacturer side It becomes troublesome.

An object of the present invention is to provide a synthetic resin spacer which is of a different size and is capable of selecting a cover thickness of a predetermined size by changing the mounting direction with respect to a reinforcing bar. .

[0005]

SUMMARY OF THE INVENTION The present invention relates to a synthetic resin spacer having a spacer main body and an attaching portion for inserting and attaching the main body to a reinforcing bar from the outside. At a plurality of locations, abutment portions substantially contacting the sides of the formwork are provided, and the distance between at least two of the abutment portions and the center of the mounting portion among the plurality of abutment portions is different. The present invention relates to a characteristic synthetic resin spacer.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is an overall view showing an embodiment of a spacer of the present invention of a three-dimensional type. A spacer body 1 is substantially rectangular and is molded from a synthetic resin such as polyvinyl chloride, polyethylene, or polypropylene. At a position slightly deviated in the vertical and horizontal directions from the center, there is provided a mounting portion 2 which can be inserted and fitted to the reinforcing bar from the outside. Each side 1a, 1b, 1c, 1d of the spacer body 1 constitutes a contact portion to the form c.

The attachment portion 2 to the reinforcing bar may be of any configuration that can be inserted and fitted to the reinforcing bar from the outside. And Japanese Patent Application Laid-Open No. 7-19435, and various known structures can be employed.

In the illustrated embodiment, one long side 1a of the main body 1 is attached to the spacer main body 1 as means for attaching to the reinforcing bar.
An insertion passage 3 extending from the intermediate portion on the side toward the center while gradually narrowing the opening width toward the center, and a mounting portion 2 connected to the outlet side of the insertion passage 3 are provided, and the mounting portions 2 are separated by 90 °. The holding portions 2a in the shape of a square "C" arranged at four locations
, And one of the holding parts 2a1 is provided at the outlet of the insertion passage 3, and the holding part 2a1
1 shows a configuration in which the inside of the insertion passage 3 and the inside of the mounting portion 2 are communicated with each other by the communication passage 4 formed.

According to the above construction, the reinforcing rod a (see FIG. 3) can be inserted into the mounting portion 2 by forcibly opening the insertion passage 3 and the communication passage 4 against the holding elasticity. The inserted reinforcing bars a forcibly push open the four flat C-shaped holding portions 2a, 2a1 arranged at 90 ° intervals against the holding elasticity, thereby holding the holding portions 2a,.
The reinforcing bar a can be firmly restrained in the mounting portion 2 by the function of the holding spring of a1.

The spacer body 1 has a large number of openings except for an outer frame portion 1A, an inner frame portion 1B, and a number of bridge portions 1C connecting these inner and outer frame portions for the purpose of weight reduction and reduction of molding material. A portion 5 is formed, and a pair of inclined side plates 3a, 3a and three holding portions 2a forming the insertion passage 3 are provided in the frame of the inner frame portion 1B. One remaining holding part 2
a1 is coupled to the tips of the inclined side plates 3A, 3A.

The opening 5 serves as a concrete passage when the concrete is poured, so that the flow of the concrete is not obstructed.

The spacer main body 1 is rectangular, and the mounting portion 2 to the reinforcing bar is provided at a position deviated in the vertical and horizontal directions from the center of the main body 1, so that the center of the mounting portion 2 and the main body 1 The shortest linear distances L1, L2, L3, L4 connecting the respective sides 1a, 1b, 1c, 1d are different from each other as shown in FIG.

In this case, if the cover thickness corresponding to L2, L3, L4 is displayed as, for example, 4, 5, 6 (unit is centimeter) using the arm portion 1C as shown in the figure, it will Useful when used.

FIG. 3 shows one use condition of the spacer of the present invention. The spacer body 1 is provided with a mounting portion 2 for a horizontal bar a of a vertical bar b arranged in a vertical direction and a horizontal bar a arranged in a horizontal direction. Is fixed through the insertion passage 3 at
FIG. 3 shows a state in which the other long side 1b is in contact with the inner surface of the mold c. Therefore, in this use state, L2 is selected as the cover thickness of the reinforcing bar.

3, the spacer body 1 is rotated by 90 ° clockwise or counterclockwise with respect to the reinforcing bar a.
By contacting the short side 1c or 1d with the form c, the linear distance L3 or L4 can be selected as the cover thickness of the reinforcing bar. Further, depending on the case, the rotation may be performed by 180 ° and the straight distance L1 may be selected. In this case, four types are used.

If the spacer body 1 is in contact with the mold c over the entire length of the side, the entire length of the spacer body 1 is exposed from the concrete wall surface when the mold c is released. Thus, in order to minimize the exposed area,
It is preferable that the protrusions 6, 6 provided at both ends of each side are abutted against the mold c, and that each side is slightly recessed between the protrusions 6, 6 in a direction away from the mold c. FIG. 1 shows a case where the protrusions 6 and 6 are provided and recessed on the other three sides other than the one long side 1a, but the same means as the other sides is applied to the long side 1a. May be applied.

FIGS. 4 and 5 show another embodiment of the present invention, which shows a type which can be used for two kinds of dimensions.

The type shown in FIG. 4 is provided with contact portions 11a, 11b and 11c for the mold at three peripheral portions, and the distance between the center of the mounting portion 2 and the upper and lower contact portions 11a. , 1
1b is equal to each other, and is different from the contact portion 11c on one side, and is of a dual-purpose type.

In the type shown in FIG. 5, the spacer body 1 is rectangular, and the center of the mounting portion 2 is deviated only to the long side, so that only the short sides 111a and 111b are in contact with the mold. It is configured to be used as

According to the present invention, in order to allow the spacers to be stably and reliably stacked at the time of packing and storage,
Concavo-convex portions 7a and 7b that fit when stacked are provided at the center of the spacer body 1. FIG. 1 shows a fitting projection 7b.
FIG. 2 also shows fitting recesses 7a.
a and 7b are provided at two places on the inner frame portion 1B, for example.

[0022]

According to the present invention, it is possible to provide a synthetic resin spacer of different sizes and sizes, thereby reducing the number of product types and facilitating inventory management.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a view of FIG. 1 as viewed from below.

FIG. 3 is a front view showing a use state of the product of FIG. 1;

FIG. 4 is a plan view showing another embodiment of the present invention.

FIG. 5 is a plan view showing still another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Spacer main body 1a One long side 1b The other long side 1c One short side 1d The other short side 1A Outer frame part 1B Inner frame part 1C Arm part 2 Attachment part 2a Holding part 3 Insertion passage 3a Slant side wall 4 Communication passage 5 Opening 6 Projection Portion 7a Fitting recess 7b Fitting projection

Claims (4)

[Claims] 1. A synthetic resin spacer comprising a spacer main body and an attaching portion for inserting and attaching the main body to a reinforcing bar from the outside, wherein the spacer main body is substantially disposed at a plurality of peripheral portions with respect to a mold. A spacer made of a synthetic resin, comprising: a contact portion that is in contact with a side, and a distance between at least two of the plurality of contact portions and a center of the mounting portion is different. 2. The synthetic resin spacer according to claim 1, wherein the abutting portion is configured to abut on the mold at at least two points on the side. 3. The spacer body has an outer frame portion, an inner frame portion and an inner frame portion.
The synthetic resin spacer according to claim 1, further comprising an arm portion for connecting the outer frame portion, wherein a mounting portion to a reinforcing bar is formed in a frame of the inner frame portion. 4. The synthetic resin spacer according to claim 1, wherein a fitting concave / convex portion is formed on one side and the other side of the center portion of the spacer main body so as to fit when the main bodies are stacked.