JP3078370U - Foundation form support bracket - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To secure stability of the position of a foundation form to be mounted, and to easily cope with different dimensions between the foundation forms, and to provide an inexpensive foundation form support bracket. I will provide a. SOLUTION: A base form supporting bracket 10 is formed by bending a single metal rod, and has a substantially symmetrical chevron 12 whose apex angle is an acute angle, and is identical to the chevron from both ends of the top of the chevron. A holding portion 13 extending on the surface in parallel with the extending direction of the top portion and with a narrow gap therebetween, and extending from both ends of the bottom portion of the chevron in a plane perpendicular to the plane formed by the chevron. A pair of support rod members 11, each of which has a base 14 formed in a rectangular shape and one end of the holding portion or one portion of the base is an open end of the metal bar, and each base of both support rod members is on one plane. In a state in which each chevron portion and the holding portion are arranged to face each other with a predetermined interval therebetween, at a predetermined position of the holding portion, straddle both holding portions and are arranged in parallel to the base portion. And a connecting rod member 20 made of one metal rod fixed to the holding portion. You.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a base form support bracket for erection of a pair of base forms at regular intervals.

[0002]

[Prior art]

 Conventionally, as shown in FIG. 15, for example, as shown in FIG. 15, a metal support plate 1 of this type and a metal support plate 1 are fixed vertically to the support plate 1 on both sides in the longitudinal direction. And a connecting rod portion 3 extending horizontally between the opposing inner vertical portions 2a of the mounting portions 2 and connecting the mounting portions 2 to each other. Things are known. In this basic form supporting bracket, a horizontal reinforcing bar extending horizontally and perpendicular to the connecting rod part 3 is arranged, and a basic form (not shown) is mounted on each of a pair of horizontal parts 2 b of the mounting part 2. The pair of foundation forms was fixed by attaching form-spacing holders (not shown) for holding the space between the two foundation forms at a constant interval.

[0003]

[Problems to be solved by the invention]

 However, in the above-described conventional base form support bracket, a mechanism for fixing the base form is not provided on the horizontal portion 2b of the mounting section 2 on which the base form is placed. For this reason, the position of the foundation form placed on the placement part 2 is unstable, and the trouble of accurate positioning is troublesome, and the foundation form is easily detached from the placement part 2. . In addition, since the spacing and height of the mounting portions 2 are fixed, various types of supporting brackets are prepared according to the applications in which the spacing and height between the foundation forms are different. Necessary and very complicated. Furthermore, since the base form support bracket must be placed on the base before the reinforcing bars are installed, and cannot be used after the reinforcing bars are installed, the work of installing the reinforcing bars is limited, and the usability is not good.

[0004] Furthermore, since this type of foundation form support bracket is a consumable part buried in concrete by casting concrete, it is strongly demanded to be as inexpensive as possible. There was a problem that it was very expensive because it required a lot of points and assembly work.

[0005] The present invention is intended to solve the above-described problem, and ensures the stability of the position of a base form to be placed, and easily enables different dimensions between base forms. It is an object of the present invention to provide a base form support metal fitting which can be provided at low cost.

[0006]

[Means for Solving the Problems and Effects of the Invention]

 In order to achieve the above object, a first structural feature of the present invention (corresponding to the invention of claim 1) is that each of the metal rods is formed by bending one metal rod, and has a substantially symmetrical shape in which the apex angle is an acute angle. And a base extending in a plane perpendicular to the plane formed by the chevron from both ends of the bottom of the chevron and formed in a predetermined plane figure, and a top or a base of the chevron. A pair of support rod members, each of which is an open end of a metal rod, and a pair of support rod members, each base portion being disposed on one plane, and each chevron portion facing each other at a predetermined interval. A connecting rod member made of a single metal rod, which is disposed near the top of the chevron, and straddles the pair of chevrons and is parallel to the base and fixed to the chevron. A pair of foundation forms is erected at both outer positions with respect to the chevron of the connecting rod member. That. Here, the connecting rod member may be a straight metal bar, a form-locking portion having both ends bent at right angles, or a U-shaped intermediate portion for inserting a reinforcing bar. It may be a bent insertion portion.

[0007] In the first feature, the base form support bracket has a pair of support rod members mounted on a base, and a top side of the chevron portion of the support bar member on both outer sides of the chevron portion of the connecting rod member. Since the pair of foundation forms is erected in a state of contact with the base form, the foundation forms are positioned on the foundation form support brackets, and the spaces between the base forms are maintained at predetermined intervals. In addition, the base form support bracket is configured by simply fixing a connecting rod member made of one metal rod to a pair of support rod members made of a chevron and a base formed by bending one metal rod. It is formed. That is, since both the supporting rod member and the connecting rod member are easily formed from a single metal rod, and furthermore, it is only necessary to fix them together, the member cost is extremely low, light, and very easily. It is formed. As a result, according to the present invention, the base form support bracket is provided at a much lower cost than before. In addition, it is possible to easily adapt to applications where the spacing between the foundation forms and the height of the foundation form with respect to the base are different simply by changing the coupling position of the coupling rod members to the support rod members. In addition, the base form support bracket can be provided at a lower cost.

It is to be noted that a base member, which is a flat plate laid on the base and on which the base is placed, can be provided on the base form support metal fitting. As a result, when unevenness is conspicuous on the base, the base member is laid on the base, and the base made of the metal bar is placed on the base member. Tilt can be prevented.

A second structural feature of the present invention (corresponding to the invention of claim 3) is that each of the metal rods is formed by bending a single metal rod, the apex angle is acute, and the apex is open. A substantially symmetrical chevron, a pinching portion extending from both open ends of the top of the chevron on the same plane as the chevron, in parallel with each other in the direction in which the chevron extends, and with a narrow gap therebetween; The base consists of a base that extends from both ends of the bottom into a plane perpendicular to the plane formed by the chevron and is formed into a predetermined plane figure. A pair of support rod members that are open ends and a pair of support rod members are arranged such that each base portion is arranged on one plane and each chevron portion and the holding portion are opposed to each other at a predetermined interval. In a state, at a predetermined position of the holding portion, it straddles a pair of holding portions and is parallel to the base. And a connecting rod member made of a single metal rod fixedly held in a state sandwiched by the holding portion, and a pair of base formwork is provided upright at both outer positions with respect to the chevron portion of the connecting rod member. It is to be.

[0010] According to the second structural feature, the base form support bracket has a pair of support rod members mounted on the base, and the support rod members are provided on both outer sides of the holding portion of the connecting rod member. Since the pair of foundation forms are erected in a state of being in contact with the holding portion, the foundation forms are positioned on the foundation form support brackets, and the spaces between the foundation forms are maintained at predetermined intervals. In addition, the base form support bracket includes a pair of support rod members each formed by bending a single metal rod and formed of a holding portion, a chevron portion, and a base, and a connecting rod member formed of one metal rod. It is formed only by fixing. That is, since both the supporting rod member and the connecting rod member are easily formed from a single metal rod, and furthermore, it is only necessary to fix them together, the member cost is extremely low, light, and very easily. It is formed. As a result, according to the present invention, the base form support metal is provided at a much lower cost than before. In addition, it is possible to easily cope with applications in which the spacing between the base formwork and the height of the base formwork with respect to the base are different simply by changing the connecting position of the connecting rod member to the support rod member. In addition, the base form support bracket can be provided at a lower cost.

[0011] The base frame supporting metal fitting may be provided with a positioning concave portion on the opposite side of each holding portion, in which the connecting rod member is engaged and which indicates the height from the base. This makes it possible to easily recognize the attachment position of the connecting rod member to the holding portion, and to use it for temporary fixing when fixing the connecting rod member to the holding portion, thereby facilitating the fixing operation.

[0012] Further, the base form support metal fitting may be provided with a base member which is a flat plate laid on the base and on which the base is placed. As a result, when unevenness is conspicuous on the base, the base member is laid on the base, and the base made of the metal bar is placed on the base member. Tilt can be prevented.

[0013]

[Embodiment of the invention]

 One embodiment of the present invention will be described below with reference to the drawings. FIGS. 1 to 3 show a first embodiment of a foundation form support used for forming a concrete cloth foundation on a base G (ground). FIG. 4 is a side view, a front view, and a plan view of the metal fitting, and FIG. 4 is a side view of a support rod member constituting the base form supporting metal fitting. The base form support bracket 10 includes a pair of support bar members 11 arranged opposite to each other at a predetermined distance on the same plane, and a connecting bar member 20 for connecting the two support bar members 11 to each other. Have been.

The support rod member 11 is formed by bending a metal round bar, and has a chevron 12 formed by two sides of an isosceles triangle having an acute apex angle, and a chevron 12 from both ends of the apex 12 a of the chevron 12. The holding portion 13 extends on the same plane as the portion 12 in parallel with the extending direction of the chevron 12 with a small gap therebetween, and extends from both ends 12 b of the bottom of the chevron 12 to form the chevron 12. It is integrally formed with a base 14 which extends on a plane perpendicular to the plane and forms a rectangle.

It is desirable that the apex angle of the chevron 12 is not less than 10 ° and not more than 45 °. If the center angle is smaller than 10 °, the stability of the support bar member 11 is likely to be impaired, and if it is larger than 45 °, the strength of supporting the base form of the chevron 12 may be reduced. Note that the metal rods forming the chevron 12 do not necessarily have to be straight. The base 14 has a vertical side defined by a line extending from both ends 12b of the bottom of the chevron 12, and forms a rectangle with a horizontal side slightly shorter than the vertical side. At a position near the chevron 12 on the side of the base 14, a positioning mark 15 is provided as a mark for positioning the ground ink written on the discarded concrete.

As shown in FIG. 4, the holding portion 13 has positioning recesses 16 each of which has a height from the base portion 14 and is engaged with the connecting rod member 20 at a plurality of opposing inside portions and in a longitudinal direction. Provided. However, the positioning recess 16 can be omitted if necessary. The tip of the holding portion 13 is the open end of the metal bar. Regarding the formation of the support rod member 10, bending of one metal rod is started to be formed from the base portion 14, the angled portion 12 is formed, and finally the holding portion 13 is formed. The open end of the metal bar is disposed at the tip of the portion 13. The pair of support rod members 10 are arranged such that each base portion 14 is placed on a plane and each chevron portion 12 and the holding portion 13 are opposed to each other with a predetermined interval defining the interval between the base forms. ing.

The connecting rod member 20 is a straight metal rod, is fitted in a predetermined positioning recess 16 of the holding section 13, and is disposed so as to straddle the pair of holding sections 13 and to be parallel to the base 14. It is fixed by welding or the like at the position of the positioning recess 16. As a result, portions of the connecting rod member 20 that protrude outward from the holding portion 13 constitute a pair of mounting portions 21. The length of the mounting portion 21 may be longer than the thickness of the foundation form placed thereon, but is desirably adjusted to the maximum distance in order to accommodate various intervals between the foundation forms. A screw groove 22 is formed in the mounting portion 21 so that the surface is uneven, so that the mounted base form is prevented from slipping. However, in place of the screw groove, unevenness or the like can be provided on the surface of the mounting portion 21 to make it difficult to slip, and it is also possible to make the surface smooth if necessary. The portion of the holding portion 13 protruding from the connecting rod member 20 constitutes a positioning portion 13a for positioning the base formwork.

Further, in each of the mounting portions 21, the connecting rod member 20 can be easily cut at a side portion (front side shown in FIG. 2) near both outer sides of a fixing portion fixed to the holding portion 13 by welding. Notches 23 are provided. The cut 23 may be formed on the lower side in addition to the lateral side. Although it may be provided on the upper side, it is necessary to consider the strength of the connecting rod member 20 for holding the base formwork. However, the cut 23 can be omitted as necessary.

When the connecting rod member 20 is welded, the distance between the base form and the distance from the base G is adjusted by adjusting the distance between the supporting rod members 11 and the position of the positioning recess 16 where the connecting rod member 20 is attached. Can be adjusted.

Next, a method of using the above-described foundation form support metal fitting 10 will be described with reference to FIG. 5 by taking the formation of a concrete cloth foundation as an example. First, a foundation form support bracket 10 is disposed on a base G prepared by casting of discarded concrete or the like so that its longitudinal direction is orthogonal to the direction of forming the concrete foundation, and a pair of support rod members is provided. 11 is placed on the base G. A large number of the base form support brackets 10 are arranged at predetermined intervals in the direction of forming the base. At a middle position between the pair of support rod members 11 of the base form supporting bracket 10, a plurality of horizontal reinforcing bars 31 are vertically extended in the concrete foundation forming direction, and the vertical reinforcing bars 32 are arranged at predetermined intervals with respect to the horizontal reinforcing bars 31. Are arranged crossing each other. The reinforcing bars may be arranged prior to the arrangement of the base form support bracket 10, and when a unit reinforcing bar in which reinforcing bars are set is used, it is necessary to arrange the reinforcing bars first. You.

Then, a pair of foundation forms 33 are placed on the placement parts 21 at both ends of the connecting rod member 20 of the foundation form supporting metal fitting 10, and are vertically attached to the positioning parts 13 a. It is erected. The base frame 33 is provided with a plurality of insertion holes 34a in the vertical frame portion 34 in the vertical direction. At the upper end and the lower end of the two base forms 33, form spacing holders 35 as shown in FIG. 6 for keeping the distance constant at predetermined positions in the longitudinal direction are attached. The form spacing holder 35 is formed by fitting a pair of base forms 33 between a locking portion 35a provided vertically to the base at both ends of the base and a positioning protrusion 35b provided vertically inside the base. The base form can be fixed at a predetermined interval by bending the claw 35c of the locking portion 35a inward.

On both outer sides of the base form supporting bracket 10, horizontal reinforcing bars 36 are disposed in parallel with the horizontal reinforcing bar 31 at the lowermost position. A base frame stopper 37 is mounted on the horizontal reinforcing bar 36. The base frame stopper 37 is formed by bending a metal round bar, and has a first rod-shaped portion 38 and a second rod-shaped portion 39 which are perpendicular to each other. A first folded portion 38a is provided at the distal end side of the first rod portion 38 by folding both rod portions to a side forming a right angle in a plane including the first rod portion 38 and the second rod portion 39. I have. The dimension of the gap between the first rod-shaped portion 38 and the first folded portion 38a is substantially equal to the outer diameter of the horizontal reinforcing bar 36. The length of the first rod portion 38 is determined based on the distance between the horizontal reinforcing bar 36 and a base frame 40 described later, and is, for example, 60 mm. The second rod-shaped portion 39 is folded at a substantially intermediate portion in a plane including the first rod-shaped portion 38 and the second rod-shaped portion 39 to a side opposite to a side where both rod-shaped portions form a right angle. The second bent portion 39a is substantially parallel to the two rod-shaped portions 39 and has substantially the same length. The second folded portion 39a has a second gap between itself and the second rod-shaped portion 39. The length of the second rod portion 39 is determined based on the height of the horizontal reinforcing bar 36 from the base, and is, for example, 60 mm.

The horizontal reinforcing bar 36 is inserted into the first gap of the base frame stopper 37, and the base frame 40 is inserted into the second gap. The front end of the base frame 40 is a bent portion 41 bent at a right angle, and the bent portion 41 is provided with an insertion hole (not shown). The engagement portions provided at both ends of the base frame support rod 43 are inserted into the insertion holes of the bent end portion 41 of the base frame 40 and the insertion holes 34 a of the base frame 33, respectively. Thereby, the base frame 40 is supported on the base form frame 33 side.

In this state, first, concrete is poured between the two base frames 40 to the height of the connecting rod member 20 of the base form supporting bracket 10, and concrete is further placed between the base forms 33. And a concrete foundation is formed. At this time, the two base formwork 33 are accurately positioned because they are supported in the base formwork bracket 10, and the displacement due to the placement of the concrete can be reliably prevented. After the curing period of the concrete has elapsed, the base frame support rod 43 is removed from the base frame 40 and the base form 33, and the base frame 40 and the base form 33 are further removed. The work ends. After the work is completed, the outside of the portion where the connecting rod member 20 protruding to the ground is fixed to the support rod member 11 can be easily cut by bending both cuts 23 with a hammer or the like. .

As described above, in the above-described embodiment, a pair of support rod members 11 of the base form support bracket 10 are erected on the base G, and a pair of support rod members 11 are provided at both end positions of the connection rod member 20. The base form frame 33 is mounted on the mounting portion 21 in a state where it is in contact with the positioning portion 13a of the support rod member 11, and stands upright. Therefore, by positioning the pair of basic forms 33 on the basic form supporting metal fittings 10, the intervals between the basic forms 33 are maintained at predetermined intervals.

Further, the base form supporting metal fitting 10 includes a pair of supporting rod members 11 formed by bending one metal rod, and a connecting rod member 20 made of one metal rod. Since the combination may be performed by welding or the like, the material is lightweight, the material cost is low, the number of parts is small, and the production is easy. Therefore, the base form support bracket 10 is provided at a significantly lower cost than in the past.

Further, since the connecting rod member 20 is a straight metal rod, the supporting rod member 16 of the connecting rod member 20 set to the above-described maximum size can be used even in various cases where the distance between the base forms 33 is different. It can be easily dealt with only by changing the connection position. Further, by changing the attachment position of the holding portion 13 of the connecting rod member 20 to the positioning recess 16, the common component can easily cope with various cases where the height of the base form 33 from the base G is different. And it is not necessary to prepare a large number of base form supporting brackets having different heights. Therefore, the manufacturing cost of the base form support metal fitting 10 can be further reduced.

Further, since the screw grooves 22 for preventing slippage are provided in the mounting portions 21 on both sides of the connecting rod member 20, the movement of the mounted base form 33 can be suppressed, and The positioning of the frame 33 can be stabilized. Further, since both sides of the connecting rod member 20 remaining after the concrete casting has been completed and the foundation formwork 33 has been removed can be easily removed by the cuts 23, the remaining both side parts of the connecting rod member 20 can be removed. The complexity can be avoided and an accident due to the remaining portion can be prevented.

Next, a modification of the above embodiment will be described with reference to the drawings. FIGS. 7 and 8 show a side view and a plan view of a base form support bracket according to a modification. In the modified example, the pair of support rod members 51 of the base form support bracket 50 are formed by changing the procedure of bending a metal bar. In other words, in the modified example, starting from the holding portion 52, the angled portion 53 is formed, and finally the rectangular base portion 54 is formed. Therefore, the front end 52a of the holding portion 52 is connected, and the base portion 54 is provided with an open end 54a of a metal rod. The other parts are the same as those of the above-described base form support fitting 10. The same effect as the above-described base form support fitting 10 can be obtained with the base form support fitting 50 according to this modification.

Next, the second embodiment will be described with reference to the drawings. 9 to 11 show a side view, a front view, and a plan view of a base form support fitting according to the second embodiment. In the second embodiment, the pair of support rod members 61 of the base form support bracket 60 have a function of sandwiching the connecting rod member 20 on the tip end side of the chevron 62 without providing a mutually parallel clamping portion. It is a thing. The base 63 and the connecting rod member 20 are the same as in the above embodiment. Also in the present embodiment, the support rod member 61 can be formed similarly by bending a single metal rod. As a result, the same effect as the above-described base form support fitting 10 can be obtained also for the base form support fitting 60 according to the present embodiment. The open end 63a of the metal rod may be provided at the top of the chevron 62 instead of at the base 63.

Next, a description will be given of a modified example of the base of the support bar member in each of the above-described embodiments and modified examples. In the above embodiment, the base is rectangular, but is not limited to this, and may be any planar figure. For example, as shown in FIG. 12A, the base 71 may be a polygon, and as shown in FIG. 12B, the base 72 may be a closed curve figure such as a circle. Further, the polygon may have a partially concave shape. Even when the base portions 71 and 72 of the support rod member have such various deformed shapes, the same effects as those obtained in the above embodiments can be obtained.

Next, modifications of the connecting rod member in the above-described embodiment and modifications will be described. In the above embodiment, the connecting rod member is a straight metal rod, but is not limited to this. For example, as shown in FIG. 13 (a), the connecting rod member 74 may be provided with locking portions 75 bent at right angles upward at both ends. This makes it possible to more reliably support the base formwork. Further, as shown in FIG. 13B, a U-shaped bent portion 77 may be provided at an intermediate position where the connecting rod member 76 is sandwiched between the two supporting rod members. This is convenient when a horizontal reinforcing bar is arranged between both support rod members after the base form support metal has been arranged on the base in advance.

In each of the above-described embodiments and modifications, FIG. 14 shows a case where the support bar member 11 of the base form support metal is placed on the base G and the base G has large irregularities. As described above, by mounting the correction plate 81 which is a metal flat plate on the base G and mounting the base 14 of the support rod member 11 on the correction plate 81, regardless of the unevenness of the base G, The support fitting can be properly erected.

In addition, the base form support fittings described in the above embodiments are merely examples, and various modifications can be made without departing from the gist of the present invention.

[Brief description of the drawings]

FIG. 1 is a side view showing a base form support bracket according to a first embodiment of the present invention.

FIG. 2 is a front view showing the same base form support bracket.

FIG. 3 is a front view showing the same base form support bracket.

FIG. 4 is a side view showing a support bar member of the basic form support metal fitting.

FIG. 5 is an explanatory view showing a use state of the same base form support bracket.

FIG. 6 is a perspective view showing a form spacing device.

FIG. 7 is a side view showing a base form support bracket as a modification of the first embodiment.

FIG. 8 is a plan view showing the same base form support bracket.

FIG. 9 is a side view showing a base form support bracket according to the second embodiment.

FIG. 10 is a front view showing the same base form support bracket.

FIG. 11 is a plan view showing the same base form support bracket.

FIG. 12 is a plan view showing two modified examples of the base of the support rod member.

FIG. 13 is a front view showing a modified example of the connecting rod member of the base form support bracket.

FIG. 14 is a front view showing a state in which a correction plate has been added to the base form support bracket.

FIG. 15 is a perspective view showing a conventional base frame support fitting.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Base form support bracket, 11 ... Support rod member, 12 ... Angle part, 13 ... Nipping part, 14 ... Base part, 16 ... Positioning recessed part, 20 ... Connection rod member, 21 ... Mounting part, 22 ... Stop part,
23 ... cut, 31 ... horizontal reinforcing bar, 32 ... vertical reinforcing bar, 33 ... basic formwork, 52 ... nut, 53 ... bolt, 54 ... base plate, 60 ... basic formwork support bracket.

Claims (5)

[Utility model registration claims] 1. A substantially symmetrical chevron formed by bending a single metal rod and having an apex at an acute angle, and perpendicular to a plane defined by the chevron from both ends of a bottom of the chevron. A pair of support rod members that extend into a plane and are formed into a predetermined plane figure, and a top of the chevron or one part of the base is an open end of a metal rod; In a state in which the base portions are arranged on one plane and the chevron portions are arranged to face each other at a predetermined interval, the support rod member is located near the top of the chevron portion, A connecting rod member made of a single metal rod that is disposed across the angled portion and parallel to the base portion and fixed to the angled portion, and at both outer positions of the angled portion with respect to the angled portion. And a pair of base formwork standing upright. 2. The base form support bracket according to claim 1, wherein the base form support member is a flat plate laid on a base, and a base member on which the base is placed is provided. 3. A substantially symmetrical chevron formed by bending a single metal rod and having an apex angle formed at an acute angle and having an apex open, and the chevron from both open ends of the apex of the apex. A holding portion extending on the same plane as the extension of the chevron in parallel with each other and with a narrow gap therebetween, and in a plane perpendicular to the plane formed by the chevron from both ends of the bottom of the chevron. And a base formed into a predetermined plane figure,
A pair of support rod members, wherein one end of the holding portion or the base portion is an open end of a metal rod; and the pair of support rod members, wherein each of the base portions is arranged on one plane, and In a state where each chevron portion and the holding portion are arranged to face each other at a predetermined interval, at a predetermined position of the holding portion, the pair is sandwiched between the pair of holding portions and arranged in parallel with the base portion. A connecting rod member made of a metal bar fixedly held in a state sandwiched by the holding portion, and a pair of basic formwork is erected at both outer positions of the connecting rod member with respect to the chevron. A base form support fitting characterized by the following. 4. The positioning rod according to claim 3, wherein said connecting rod member is engaged with said opposing side of each of said holding portions, and a positioning concave portion indicating a height from said base portion is provided. Base form support bracket. 5. The base form support bracket according to claim 3, wherein the base form support member is a flat plate laid on the base and the base member on which the base is placed.