KR20120003067A - Steel bar spacer - Google Patents

Steel bar spacer Download PDF

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Publication number
KR20120003067A
KR20120003067A KR1020100063706A KR20100063706A KR20120003067A KR 20120003067 A KR20120003067 A KR 20120003067A KR 1020100063706 A KR1020100063706 A KR 1020100063706A KR 20100063706 A KR20100063706 A KR 20100063706A KR 20120003067 A KR20120003067 A KR 20120003067A
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KR
South Korea
Prior art keywords
spacer
support plates
reinforcement
horizontal
reinforcing bars
Prior art date
Application number
KR1020100063706A
Other languages
Korean (ko)
Other versions
KR101207503B1 (en
Inventor
조홍준
Original Assignee
조홍준
주식회사 천지건업
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Priority to KR1020100063706A priority Critical patent/KR101207503B1/en
Publication of KR20120003067A publication Critical patent/KR20120003067A/en
Application granted granted Critical
Publication of KR101207503B1 publication Critical patent/KR101207503B1/en

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
    • E04C5/168—Spacers connecting parts for reinforcements and spacing the reinforcements from the form
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
    • E04C5/18—Spacers of metal or substantially of metal
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
    • E04C5/20—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups of material other than metal or with only additional metal parts, e.g. concrete or plastics spacers with metal binding wires
    • E04C5/206—Spacers having means to adapt the spacing distance
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/12—Mounting of reinforcing inserts; Prestressing

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Mechanical Engineering (AREA)

Abstract

PURPOSE: A reinforcing bar spacer is provided to uniformly maintain a gap between a reinforcing bar and a form by securely installing the reinforcing bar spacer in a crossed part of horizontal and vertical reinforcing bars. CONSTITUTION: A reinforcing bar spacer(1) comprises a pair of side support plates(3) and upper and lower connection bars(5a,5b). A pair of spring clasps(4) are formed in the top of the side support plates and are hung on the top of a horizontal reinforcing bar. Multiple relaxation prevention protrusions(43) are formed in the inlet sides(41) of the spring clasps. The upper and lower connection bars connect the top and bottom of the side support plates.

Description

Rebar spacer {Steel bar spacer}

The present invention relates to a reinforcing spacer, and more particularly, when constructing a retaining wall of a concrete building, it is firmly installed at a site where a vertical reinforcing bar and a horizontal reinforcing bar maintain a constant gap between reinforcing bars and formwork, and when pouring concrete mortar The present invention relates to a reinforcing spacer which does not have a position shift and does not interfere with the pouring flow of the mortar so that the concrete mortar may be sufficiently filled without generating a cavity in the retaining wall.

In general, when building retaining walls or columns of reinforced concrete structures, concrete reinforcement is installed after installing the formwork after laying the reinforcing bars as designed according to the thickness of the retaining wall and the pillars. Reinforcement spacers are used for installation.

In the related art, as shown in FIG. 7, an insertion part 110 formed in an open state to be fitted into a reinforcing bar on one side, and a fixing groove 120 fixed to the reinforcing bar fitted through the insertion part 110 in the center thereof. The donut-shaped spacer 100, which is formed between the insertion part 110 and the fixing groove 120, and has a resilient support span 130 for elastically holding the reinforcing bars fitted into the fixing groove 120, has been used.

However, the donut-shaped spacer 100 as described above is mainly installed in the vertical reinforcing bar is installed in the vertical reinforcing bar is installed close to the inner surface of the vertical reinforcing bar and the horizontal reinforcing bar is installed horizontally in the vertical groove is fixed groove 120 In order to be fitted, the donut-shaped spacer 100 has to be installed in a horizontal state with respect to the vertical rebar, so when the concrete mortar pouring work, the donut-shaped spacer 100 is not fixed to the position installed in the vertical reinforcement and concrete mortar is poured. There is a problem that the phenomenon of falling down along the vertical reinforcement by the pressure frequently occurs, and thus the vertical reinforcing bars in which the donut-shaped spacer 100 is installed can maintain a constant distance from the formwork, but the donut-shaped spacer 100 The vertical reinforcement of the part not falling below is dependent on the casting pressure of the concrete mortar. It is pushed toward the sea form, which leads to a big problem that prevents the concrete retaining wall and column from being built with the strength of the design. This problem leads to poor construction and causes defects.

Therefore, in order to solve the problem of the donut-shaped spacer as described above, the inventor of the present invention has proposed a reinforcing bar retaining region (hereinafter, prior art) of Patent No. 10-320495.

Reinforcing bar spacing of the prior art as shown in Figure 8 and 9 to form a pair of outer support 210 in the "S" shape, one side between the formwork 300 and the horizontal reinforcement 410 While forming a wide width (S 1 ) to be spaced apart at a wide interval, while the other side is formed of a narrow width (S 2 ) to maintain a narrow gap between the formwork 300 and the horizontal rebar (410) According to the thickness of the retaining wall and the column to be constructed, there is an advantage in that the space between the formwork and the horizontal reinforcing bars 410 and the vertical reinforcing bars 420 can be selected at a wide or narrow interval, and a pair of “S” shapes are formed. Since the outer support 210 restrains the horizontal rebar 410 and the vertical rebar 420 intersecting the "+" shape in a state of pinching both sides of the vertical rebar 420, thereby being fixed to the horizontal rebar 410 by walking. Placing Concrete Mortar While the reinforcement spacing 200 is not up to the phenomenon that the phenomenon of falling down when up, while the upper and lower inner body integrally formed in the inner side so as to connect a pair of outer support 210 of the "S" shape Since the support members 220 and 230 are formed in an “S” shape like the pair of outer support members 210, the one side portion 240 or the narrow width formed by the pair of outer support members 210 having a wide width S 1 is provided. When the donor walk (S 2) as formed in the other end portion 250 of the upper inner support 220 with a part 240, one side of the wide width (S 1) is formed as shown in Figure 9 to the horizontal reinforcement (410) The lower inner support 230, which is not installed with the horizontal reinforcing bars 410, is in a state of being opened upward and hinders the flow of the concrete mortar that is poured into the formwork, which causes the lower inner support 230 to be below. The concrete mortar will not be filled The problem is that cavitation can occur.

And the reinforcement spacing 200 of the prior art is a pair of outer support 210 is formed in the "S" shape with one side portion 240 and a narrow width (S 2 ) formed in a wide width (S 1 ) Since the other side portion 240 is formed to be selected and used, not only both sides should be manufactured to a large size of a predetermined width, but also a pair of outer support 210 should be formed to have a long "S" shape, and also a pair of outer sides. Since both sides of the support 210 is formed to extend the outer side of the upper and lower inner support 230, 240, the reinforcement meat 260 protruding in the "S" shape is formed so that a large amount of synthetic material is required The disadvantage is that the cost is high.

The present invention has been proposed in order to solve all the problems shown in the prior art, such that the horizontal and vertical reinforcing bar in the "+" shape in order to maintain the set distance between the formwork and the reinforcing bar In the state of restraining both sides of the vertical reinforcing bar in the part to be firmly bound to the horizontal reinforcement, and by connecting the upper and lower connecting rods of the circular cross section of the two sides of the support bar for constraining the vertical reinforcement to strengthen the connection strength of the two support plates While inventing concrete mortar, the mortar flows well so that the cavity does not occur in the concrete mortar placed in the formwork, and the invention was invented for providing a reinforcing spacer allowing the retaining wall and the column to be constructed with the strength as designed.

The present invention as a means for achieving the above object,

A pair of both support plates each having a hook ring formed to be hooked to the horizontal reinforcing bars, and both sides of the vertical reinforcing bars bounded so that the two support plates are orthogonal to the horizontal reinforcing bars when the hooks of each of the support plates are hooked to the horizontal reinforcing bars. In the rebar spacer is formed with upper and lower connecting rods connecting the upper and lower portions of both support plates so as to have a width to sandwich the

The reinforcing spacer is provided with a hook for rotatably hanging on the horizontal reinforcement only on one side of the upper support plate, protruding obliquely toward the closed side facing each other on the inlet side of the hook is inserted into the inlet side to the closed side There are a plurality of detent-releasing protrusions for holding the horizontal reinforcing bars inserted so as not to relax.

The upper and lower connecting rods are formed in a shape of a failure in which a diameter of a portion located in the middle of both support plates is smallest and a diameter gradually increases toward both ends connected to the inner surfaces of both support plates while the cross section is formed in a circular shape. .

In addition, the reinforcement spacer is characterized in that the upper gap retaining portion is supported on the formwork to maintain a constant distance between the formwork and the reinforcement on the opposite side of the hook on the upper side of the support plate on the basis of the upper connecting rod is formed It is done.

In addition, the reinforcing spacer is characterized in that the two support protrusions protruding toward the inside of the lower front end portion of both support plates on the basis of the lower connecting rod to hold the vertical reinforcement in a state of elastically sandwiching each other protruding from each other.

In addition, the reinforcement spacer is characterized in that the upper and lower reinforcing parts protruding toward each other are formed on the inner surface of the side support plate to which both ends of the upper and lower connecting rods are connected.

According to the present invention, when the reinforcing spacer is hooked to a horizontal reinforcing bar perpendicular to the vertical reinforcing bar, the plurality of detenting loosening protrusions do not relax in the horizontal reinforcing bar and the upper gap maintaining unit supports the formwork at regular intervals. The both side support protrusions protruding inside the lower front end portion hold the vertical bars in a state of elastically sandwiching both rear sides of the vertical bars inserted to be supported by the lower connecting rod, so that the rebar spacers are perpendicular to the horizontal bars and the vertical bars. It is firmly installed at the intersections of the parts so that the formwork with respect to the reinforcing bar is always effective to maintain a constant interval, and the rebar spacer is supported on the hook and the formwork hanging on the horizontal reinforcing bar based on the upper connecting rod Only the upper part where the gap holder is formed The lower part of the lower part has a narrow width that can accommodate the diameter of the vertical reinforcing bar based on the lower connecting rod so that the weight and volume can be reduced as compared with the rebar spacing of the prior art. It is effective in reducing the production cost by saving synthetic resin raw materials.

In addition, the upper and lower connecting rods connecting the pair of both supporting plates are formed in a smooth curve with a failure shape that gradually increases toward both supporting plates based on the middle part having the smallest diameter so that the concrete mortar can flow smoothly when the concrete mortar is poured. By preventing the cavitation from appearing inside the concrete mortar that is placed in the formwork, the retaining wall and the pillars can be constructed in accordance with the designed strength.

1 is a front perspective view of a reinforcing spacer for explaining the present invention,
2 is a rear perspective view of the rebar spacer of the present invention;
3 is a front view of the rebar spacer of the present invention,
4 is a cross-sectional view taken along the line AA of FIG.
5 is an installation state diagram of the reinforcement spacer of the present invention,
Figure 6 is a comparison of the rebar spacer of the present invention and the conventional rebar spacing area.
7 is a front view of a donut spacer of the prior art.
8 and 9 are a perspective view and a state of use of the rebar spacing of the prior art.

Detailed embodiments of the reinforcing spacer according to the present invention will be described in detail with reference to the accompanying drawings.

Reference numeral 1 denotes a reinforcing spacer, wherein the reinforcing spacer 1 is disposed at an intersection where the vertical reinforcing bars 2a installed vertically and the horizontal reinforcing bars 2b installed horizontally cross each other. A pair of both support plates 3 having a pair of catching rings 4 formed on the upper side of the horizontal bar 2b in a state of sandwiching both sides and the both support plates 3 are fixed. It is composed of upper and lower connecting rods 5a and 5b for connecting the upper and lower portions of both support plates 3 so as to be connected side by side while maintaining a gap.

A feature of the present invention is to form a hook 4 only on each of the upper side of each of the support plates 3 of the reinforcing spacer 1 to space the horizontal reinforcing bars 2b at regular intervals S from the formwork 6. There is a horizontal reinforcing bar (2b) inserted into the inlet side 41 of the engaging ring (4) in the state facing each other protruded inclined toward the closed side 42 in contact with the closed side (42) inlet side 41 In the formation of a plurality of cradle-shaped loosening prevention projections 43 to be prevented from being pushed to the side, and also in forming the upper and lower connecting rods (5a) (5b) connecting the two support plates (3) in a circular cross section The diameter of the intermediate part located between the support plates 3 is the smallest, and it forms in the shape of the failure which a diameter becomes gradually larger toward the inner surface of both support plates 3 with respect to the middle part of the small diameter.

Another feature of the present invention, on the upper side of the support plate (3) on the upper side of the connecting rod (5a) of the reinforcement spacer 1 between the horizontal reinforcing bar (2b) and the form (6) on the opposite side of the hook ring (4) The upper gap maintaining portion 31 is formed to maintain the constant spacing (S) at all times, the reinforcement spacer 1 is formed on the lower side of the lower support plate 3 on the basis of the lower connecting rod (5b) Each of the front end portions 32 protrude to face each other toward the inner side so as to protrude from both side support protrusions 33 holding the vertical reinforcing bars 2a, and both ends of the upper and lower connecting rods 5a and 5b are protruded. On the inner surface of each of the two supporting plates 3 to be connected to each other, the upper and lower reinforcing parts 34 and 35 protruding toward the inner side facing each other to enhance the connection strength of the upper and lower connecting rods 5a and 5b are formed. Is in.

Since the reinforcement spacer 1 is injection molded using synthetic resin as a raw material, a plurality of fat loss holes 36, 37, and 38 are formed at upper and lower portions of both support plates 3 to reduce synthetic resin raw materials.

The operation of the present invention configured as described above will be described.

In the state where the reinforcing spacer 1 is interposed between the vertical reinforcing bars 2a and the horizontal reinforcing bars 2b, both hooking rings 4 formed on each of the two supporting plates 3 surround both sides of the vertical reinforcing bars 2a. Both hooks 4 are hooked to the horizontal reinforcing bars 2b. At this time, when both hooks 4 are hooked to the horizontal bars 2b, the two supporting plates 3 are imaginary lines in FIG. As shown in FIG. 2, the lower side of the supporting plate 3 is pushed toward the vertical reinforcing bar 2a in the drawing so that the lower connecting rods 5b of both supporting plates 3 contact the vertical reinforcing bars 2a. When both sides of the support plate (3) is rotated in the clockwise direction with the horizontal rebar (2b) as the starting point as shown in the solid line portion of Figure 5 while the vertical reinforcement (2a) between the lower front end portion 32 is inserted at the same time It is supported by the connecting rod (5b), wherein each of the lower front shear portion 32 Each of the two supporting protrusions 33 protruding from the inner surface of the two lower front ends 32 is elastically opened toward both inner lower front ends 32 when the vertical reinforcing bars 2a are inserted between the two lower front ends 32. Since the insertion space is widened between), the vertical reinforcing bar (2a) is inserted between the two lower lower front end portion 32 (see Fig. 4), and also the vertical reinforcing bars (5a) inserted between the lower lower front end portion 32 When the state is supported by the lower connecting rod (5b) both the support plate (3) is no longer rotated and stops, as described above, the vertical reinforcing bar (2a) is supported by the lower connecting rod (5b) When the rotation operation is in a stopped state, both support protrusions 33 which are elastically opened when the vertical reinforcing bar 2a is inserted are returned to their original positions by the elastic restoring force, and the vertical reinforcing bars 2a as shown in the solid line of FIG. Resilient both sides of the rear Which will be sandwiched by.

Therefore, the vertical reinforcing bar (2a) inserted between the two lower front end portion 32 as described above is constrained in a state that can not escape by the lower connecting rod (5b) and both support protrusions (33).

On the other hand, the reinforcing spacer 1 is a plurality of mounting-relaxing prevention projections 43 formed on the inner surface of the two engaging hooks (4) rotatably locked to the horizontal rebar (2b) of the horizontal rebar (2b) It is supported in a state where it is locked on both sides of the lower side, and thus both the hooks 4 on the horizontal reinforcing bars 2b are locked, and the lower connecting rods 5b and both sides that connect the lower ends of the support plates 3 on both sides. When the two support protrusions 33 protruding from the lower front end portion 32 are in a state of restraining the vertical reinforcing bars 2a, the reinforcing spacers 1 are perpendicular to each other in the vertical reinforcing bars 2a and the horizontal reinforcing bars 2b. It is installed in a state that is firmly locked to the horizontal reinforcing bar (2b) at the portion, whereby the upper gap retaining portion 31 formed on the opposite side of the catch ring (4) of both side support plate (3) supports the formwork (6) The horizontal reinforcing bar (2b) and the formwork (6) is always a constant distance (S) It will be supported to be maintained.

In the present invention, a plurality of fat loss holes 36, 37, 38 are formed in each of the support plates 3, and in particular, the reinforced spacer 1 of the present invention has a height h of a small height as shown in FIG. On the other hand, the rebar spacing 200 of the prior art is formed with a height (H) of a large key. Therefore, the rebar spacer 1 of the present invention can be molded from a small amount of synthetic resin raw material compared to the rebar spacing 200 of the prior art, thereby reducing the production cost.

In addition, the reinforcement spacer 1 of the present invention, the upper and lower connecting rods 5a, 5b connecting the two support plates 3 are formed with a diameter that gradually increases toward both sides based on the middle portion having the smallest diameter, as if Since it is in the shape of a failure, the concrete mortar that is poured into the formwork 6 flows well without being accumulated in the upper and lower connecting rods 5a and 5b, and thus, the empty space in the concrete mortar that is poured into the formwork 6 is shared. ) Will never occur so that the retaining wall or column of the concrete building can be constructed to have strength by design.

1: Rebar spacer 2a, 2b: Vertical rebar and horizontal rebar
3: support plate 31: upper space holding unit
32: lower front end 33: support protrusion
34: upper reinforcement part 35: lower reinforcement part
36,37,38: lose weight hole 4: hook
41: entrance side 42: closed side
43: loosening prevention protrusion 5a, 5b: upper and lower connecting rod
6: formwork S: separation interval

Claims (4)

A pair of both support plates each having a hook ring formed to be hooked to the horizontal reinforcing bars, and both sides of the vertical reinforcing bars bounded so that the two support plates are orthogonal to the horizontal reinforcing bars when the hooks of each of the support plates are hooked to the horizontal reinforcing bars. In the rebar spacer is formed with upper and lower connecting rods connecting the upper and lower portions of both support plates so as to have a width to sandwich the
The reinforcing spacer is provided with a hook for rotatably hanging on the horizontal reinforcement only on one side of the upper support plate, protruding obliquely toward the closed side facing each other on the inlet side of the hook is inserted into the inlet side to the closed side There are a plurality of detent-releasing protrusions for holding the horizontal reinforcing bars inserted so as not to relax.
The upper and lower connecting rods are formed in a shape of a failure in which a diameter of a portion located in the middle of both support plates is smallest and a diameter gradually increases toward both ends connected to the inner surfaces of both support plates while the cross section is formed in a circular shape. Rebar spacer.
The method of claim 1,
The rebar spacer is characterized in that the upper gap retaining portion is supported on the formwork to maintain a constant distance between the formwork and the reinforcement on the opposite side of the hook on the upper side of the support plate on the upper connecting rod is formed Rebar spacer.
The method of claim 1,
The reinforcing spacer is a reinforcing spacer, characterized in that both support protrusions protruding toward the inside of the lower front end portion of both support plates on the basis of the lower connecting rods to hold the vertical reinforcement in a state of elastically sandwiching.
The method of claim 1,
The reinforcement spacer is a reinforcement spacer, characterized in that the upper and lower reinforcing parts protruding toward each other formed on the inner surface of the two side support plate to which both ends of the upper and lower connecting rods are connected.
KR1020100063706A 2010-07-02 2010-07-02 Steel bar spacer KR101207503B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020100063706A KR101207503B1 (en) 2010-07-02 2010-07-02 Steel bar spacer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020100063706A KR101207503B1 (en) 2010-07-02 2010-07-02 Steel bar spacer

Publications (2)

Publication Number Publication Date
KR20120003067A true KR20120003067A (en) 2012-01-10
KR101207503B1 KR101207503B1 (en) 2012-12-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020100063706A KR101207503B1 (en) 2010-07-02 2010-07-02 Steel bar spacer

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210013450A (en) * 2019-07-25 2021-02-04 삼성중공업 주식회사 Scaffolding piece
KR102395444B1 (en) * 2020-11-04 2022-05-06 김석환 structure system combine reinforcing rod with spacer

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008255657A (en) 2007-04-04 2008-10-23 Daiwa House Ind Co Ltd Reinforcement spacer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210013450A (en) * 2019-07-25 2021-02-04 삼성중공업 주식회사 Scaffolding piece
KR102395444B1 (en) * 2020-11-04 2022-05-06 김석환 structure system combine reinforcing rod with spacer

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