JP5909776B2 - Foundation rebar retainer - Google Patents

Description

  The present invention relates to a holder for holding a reinforcing bar embedded in a concrete of a reinforced concrete structure, and more particularly to a reinforcing bar holder for holding a basic reinforcing bar embedded in a foundation part of a building structure. .

  In general, a reinforced concrete structure is composed of reinforcing bars arranged in a desired state, and concrete placed with a predetermined cover thickness between the reinforcing bars, and the reinforcing bars are embedded in the concrete. Is. By the way, such reinforced concrete structures are used for buildings such as RC structures and SRC structures, and columns and beams are constructed of reinforced concrete structures. The foundation part such as a steel structure is also constructed by a reinforced concrete structure having the above structure. For the foundation structure, a structural style such as a cloth foundation or a solid foundation is used, but if the foundation part is to be constructed with reinforced concrete, the foundation reinforcement is arranged and the specified cover is applied. Concrete is cast while having a thickness.

  Therefore, conventionally, in order to hold the above-described basic reinforcing bars, the vertical bars arranged in the longitudinal direction of the foundation and the horizontal bars arranged in the width direction (the vertical bars and the horizontal bars are collectively referred to as a base bar) are supported. At the same time, there is a reinforcing bar holder that is integrally molded so that the rising bars arranged in the vertical direction can be supported simultaneously (see Patent Document 1).

JP-A-9-184244

  The above prior art was developed for the purpose of eliminating the need to bind the base muscle and the rising muscle, and the vertical muscle support section and the horizontal muscle support section that support the vertical and horizontal muscles constituting the base muscle. And a riser support portion having a fitting recess for fitting the riser.

  However, the above technology assumes only the base and rising bars as reinforcing bars to be embedded in the concrete, and does not use the rising bars, and cannot be used for structures that have loose bars surrounding the vertical bars. Met.

  In addition, the above-described conventional reinforcing bar holder is intended to secure the cover thickness by being installed, and to facilitate positioning of the formwork by providing a width stopper, and therefore Each part was integrally molded.

  However, while it is easy to ensure the cover thickness, etc., if the dimensions of the foundation structure to be constructed are not determined, the dimensions (size) of the reinforcing bar holder to be used are not determined, and it lacks versatility. There was a problem. That is, even if there are several types of dimensions of the foundation structure step by step according to the standard, it is necessary to facilitate the reinforcing bar holder with dimensions (sizes) according to the standard of the several types, and to a foundation structure that does not conform to the standard It could not be diverted.

  The present invention has been made in view of the above-mentioned points, and the object of the present invention is to be used in a foundation structure using a stirrup and to be diverted to a plurality of types of foundation structures having different dimensions. It is to provide a reinforcing bar holder to obtain.

  Therefore, the present invention is a basic rebar holder comprising two support members, and a horizontal member supported at both ends by the two support members and horizontally mounted between the support members. The support member is provided with a base portion having a sufficient ground contact area, a support member main body standing upright from the base portion, and protruding from the support member main body in a direction in which the horizontal member should be horizontally mounted. A protrusion having an abutment surface that allows the front end portion of the rack member to abut, and a tip disposed in the vicinity of the protrusion to protrude from the support member body, and the front end portion of the horizontal member is An elastically deformable tongue piece that contacts the upper surface of the horizontal member when contacting the contact surface is provided.

  According to the above configuration, since the basic reinforcing bar holder is constituted by two types of members, the support member and the horizontal member, these members can be provided independently and these members can be combined. Can be used as a basic reinforcing bar holder. In other words, it is possible to configure a basic reinforcing bar holder by separately installing two support members in the width direction of the foundation structure to be constructed and horizontally placing a horizontal member between these two support members. . At this time, the front end portion of the horizontal member is brought into contact with the protruding portion of the support member, and the tongue piece portion is in contact with the upper surface of the contacted horizontal member front end portion so that the front end portion is moved upward. Therefore, the abutting state can be maintained.

  In addition, since the tongue piece portion is configured to protrude from the support member main body, when the horizontal member is brought into contact with the contact surface of the protruding portion, the tongue piece portion should be in contact with the distal end portion of the horizontal member within the range of the protruding length. However, since the tongue piece portion can be elastically deformed, it is elastically deformed until the distal end portion of the horizontal member is brought into contact with the contact surface, and then restored by elastic force, The tip can abut on the upper surface of the tip of the horizontal member.

  Further, the present invention is characterized in that the support member in the above configuration further includes a protruding piece protruding in a direction different from the protruding portion.

  According to the above configuration, since the protruding piece protrudes in a direction different from the direction in which the horizontal member is horizontally mounted, the reinforcing bar different from the reinforcing bar supported by the horizontal member is supported by the protruding piece. Can do. That is, for example, when one base muscle (for example, vertical muscle) is supported by the horizontal member, the other base muscle (for example, horizontal muscle) can be supported by the projecting piece.

  Furthermore, the present invention is the above configuration, wherein the horizontal member includes a notch portion that is partially cut away near the tip, and the support member is further provided on a surface of the protruding portion, and the notch portion is provided. It is characterized by having a locking portion for locking.

  With the above configuration, the notch portion of the front end of the horizontal member supported by the support member is locked by the locking portion of the protruding portion, and the horizontal member is firmly connected by the support member.

  Further, in the above-described configuration, the present invention can be configured such that the tongue piece portion abuts on the upper surface of the horizontal member and urges the distal end portion of the horizontal member toward the contact surface. .

  According to the said structure, the state which the front-end | tip part of the horizontal member contact | abutted to the contact surface of the protrusion part can be maintained by the urging | biasing by a tongue piece part. At this time, since both ends of the horizontal member are restricted in movement in the longitudinal direction due to the presence of the support member main body (the projecting portion or the base portion of the tongue piece), the position where the horizontal member should be installed is It will be confirmed.

  In the invention of each configuration described above, the projecting portion is a projecting portion having a contact surface that allows contact of the horizontal member, and the contact surface has different heights on the high surface and the low surface. It is comprised by a contact surface, The said horizontal member can be set as the structure comprised by the shape fitted to the said contact surface.

  According to the above configuration, the contact surface is formed with a step by the high surface and the low surface, and the distal end portion of the horizontal member is fitted to the contact surface having the step so that the distal end portion of the horizontal member is The position to be brought into contact with the protrusion of the support member can be made clear.

  Furthermore, in the above configuration, the protruding portion may have a configuration in which a high-order surface that constitutes the contact surface is provided on the distal end side and a low-order surface is provided on the support member main body side.

  According to the above configuration, the contact surface of the protruding portion is formed with an ascending step from the support member main body side toward the distal end side, and the horizontal member is prevented from moving in the direction away from the support member in the longitudinal direction. be able to.

  Further, in the above configuration, the horizontal member includes a through-hole through which a fixing screw is inserted in the vicinity of both ends thereof, and the protruding portion of the supporting member causes the fixing screw to be screwed into a lower surface of the contact surface. It can be set as the structure provided with the area | region to accept | permit.

  According to the said structure, between the horizontal member fitted to this in the low level surface of a protrusion part can be fixed with a fixing screw, and a support member and a horizontal member can be connected firmly. Moreover, since the fixing screw is used on the lower surface, even if the head of the fixing screw protrudes from the surface of the horizontal member, the head of the screw remains in the other part of the horizontal member. It is possible to avoid projecting upward from (the portion that contacts the high-level surface of the projecting portion).

  Furthermore, in each said invention, a horizontal member can be set as the structure provided with the reinforcing bar mounting part which protrudes in a transversal direction near the center of a longitudinal direction.

  According to the said structure, a part of base reinforcement arranged along the longitudinal direction of a horizontal member can be hold | maintained by a reinforcing bar mounting part. In this case, since the horizontal member is horizontally mounted above the base portion of the reinforcing bar supporting portion, the base reinforcing member can be supported at the height.

  Further, in the invention of each configuration described above, the protruding portion has a concave portion whose side surface is continuous in the protruding direction, and the horizontal member is formed in a substantially U-shaped cross-section, and the U-shaped A protruding portion that protrudes from the opposing piece portion to be configured to the opposite side may be provided, and the protruding portion may be engaged with the concave portion of the protruding portion.

  According to the above configuration, the protrusion formed on the opposed piece of the horizontal member formed in a substantially U-shaped cross-section can be engaged with the concave formed on the side surface of the protrusion. By entering, it is possible to prevent the front end of the horizontal member from floating in a state where the front end of the horizontal member is in contact with the protruding portion. Therefore, for example, by restricting the movement of the horizontal member in the longitudinal direction by the locking member and the notch, and suppressing the lifting of the tip by the engagement, the contact between the tip of the horizontal member and the protrusion is brought about. A state can be stabilized moderately. In this state, the contact state can be firmly maintained by receiving the urging force of the tongue piece portion or by applying a fixing force by a fixing screw.

  In each of the above inventions, the support member may further include an upper surface portion having an appropriate area and a formwork installation portion installed on the upper surface portion.

  According to the said structure, it becomes possible to mount the lower end of a formwork in the formwork installation part installed in the upper surface part of a supporting member. Thereby, a formwork can be installed, maintaining a covering thickness with these foundation reinforcing bars, holding a foundation reinforcement.

  And the formwork installation part in the said invention shall be set as the structure provided with the upper surface part connection part connected with the said upper surface part, and the formwork mounting surface comprised by this predetermined | prescribed height from this upper surface part connection part. Can do.

  According to the above configuration, the formwork installation part is connected to the upper surface part of the support member, and the lower end of the formwork can be placed at a predetermined height from the upper surface part. It is possible to install a formwork for constructing reinforced concrete according to the dimensions.

  Furthermore, in the above invention, the support member may be configured such that a connecting base plate is interposed between the upper surface portion and the upper surface portion connecting portion.

  According to the above configuration, the connection base plate can be integrally formed with the upper surface portion of the support member by installing the connection base plate on the upper surface portion of the support member. By connecting an upper surface part connection part to a board, a formwork installation part will be firmly connected with a reinforcing bar support part via a bale board for connection.

  According to the present invention, since the support member and the horizontal member are configured, the position of the two support members (the distance between the two support members) is changed by changing the length of the horizontal member. ) Can be changed. Since the basic reinforcing bar holder according to the present invention is assembled by joining the horizontal member and the support member, the basic reinforcing bar holder having a predetermined size depends on the length of the horizontal member. That is, the support member can be diverted even in the case of constructing the foundation structure having different dimensions. In other words, if several types of horizontal members having different lengths are prepared, it is possible to deal with basic structures having different dimensions.

  In addition, the horizontal member is not necessarily configured to support the rising streaks, and is placed between the two support members, so that the streaks are arranged between the two support members. Is also possible. That is, the main reinforcing bar on the lower end side of the foundation reinforcing bar is in a state of being supported by the horizontal member, and the installation position of the stirrup is determined based on the position of the main reinforcing bar.

  Furthermore, in the configuration in which the formwork installation part is provided on the upper surface part of the support member, it is possible to adjust the positional relationship between the arranged foundation rebar and the formwork, and the cover thickness necessary for the foundation concrete is maintained. However, it becomes possible to hold the foundation rebar.

It is explanatory drawing which shows the 1st Embodiment of this invention. The form of the supporting member of 1st Embodiment is shown, (a) is a top view, (b) is a front view, (c) is a bottom view. The form of the supporting member of 1st Embodiment is shown, (a) is a right view, (b) is a left view, (c) is a rear view. It is explanatory drawing which shows the form of the protrusion part of 1st Embodiment. It is a perspective view which shows the state which assembled 1st Embodiment. It is explanatory drawing which shows the usage pattern of 1st Embodiment. It is explanatory drawing which shows 2nd Embodiment. It is explanatory drawing which shows 3rd Embodiment. It is explanatory drawing which shows the usage condition of 3rd Embodiment. It is explanatory drawing which shows the modification of 3rd Embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a first embodiment of the present invention. As shown in this figure, the basic reinforcing bar holder of the present embodiment is composed of two support members 1 and 2 and one horizontal member 3. The two support members 1 and 2 are provided in the same configuration, and are arranged so as to face each other, thereby providing a predetermined interval between them and providing a horizontal member at this interval. Both ends of the horizontal member 3 are supported by both support members 1 and 2. The two support members 1 and 2 include base portions 4 and 5 for installing the support members 1 and 2, support member main bodies 6 and 7 erected on the base portions 4 and 5, and the support members. It is comprised by the protrusion parts 8 and 9 protrudingly provided by the main bodies 6 and 7. FIG.

  The base portions 4 and 5 of the support members 1 and 2 are formed in a planar shape having a sufficient ground contact area so that the support members 1 and 2 can stand independently at a place where the support members 1 and 2 are to be installed. If the ground contact surface is large, it can stabilize the self-supporting state of the support members 1 and 2, but considering that it is embedded in the cast concrete, the area is such that the support members 1 and 2 do not fall over. .

  The support member main bodies 6 and 7 are formed integrally with the base portions 4 and 5 and are erected above the base portions 4 and 5 in a state having an appropriate height. The horizontal member 3 is brought into contact with the projecting portions 8 and 9 provided on the support member main bodies 6 and 7 to support the horizontal member 3 and the weight of the foundation reinforcing bar placed on the horizontal member 3. It also supports. The entire support member main bodies 6 and 7 are composed of an outer peripheral portion having an appropriate width that forms the outer periphery thereof, and a plurality of ribs that are appropriately provided vertically and horizontally within the range formed by the outer peripheral portion. A part of the portion surrounded by the ribs and the outer peripheral portion is penetrated in the enclosed range. This penetration makes it easy for the concrete to flow when the concrete is placed.

  The protrusions 8 and 9 are provided so as to protrude in the facing direction on the opposite side when the support member bodies 6 and 7 are installed to face each other, and the protrusion length is within an appropriate range from both ends of the horizontal member 3. It is provided to the extent that it can be supported. The support member bodies 6 and 7 including the protrusions 8 and 9 have the same shape, and both the protrusions 8 and 9 have the same height and the same protrusion length.

  On the other hand, the horizontal member 3 is composed of a single long member. The horizontal member 3 has a shape bent at two locations along the longitudinal direction (transverse cross-sectional shape substantially U-shaped), and has an upper piece (a flat portion located at the center) 3a and both sides thereof. It is comprised with the opposing piece part (side part located in the both sides of an upper piece part) 3b and 3c formed. And when the both end parts 31 and 32 of this horizontal member 3 are supported by the above-mentioned protrusion part 8 and 9, it can mount | wear so that the said both end part 31 and 32 may cover the protrusion part 8 and 9 from upper direction. It has become. At this time, the upper piece 3a is brought into contact with the upper surfaces of the protrusions 8 and 9, so that the weight acting on the horizontal member 3 can be supported, and the opposing pieces 3b and 3c are The side member 9 is brought into contact with the side member 9 so that the posture of the horizontal member 3 can be stabilized. In order to stably integrate the support members 1 and 2 and the horizontal member 3, both end portions 31 and 32 of the horizontal member 3 may be fixed to the protruding portions 8 and 9 by fixing screws A and B. It can be done.

  Here, details of the support member bodies 6 and 7 will be described. 2 and 3 are views showing the form of the support member bodies 6 and 7. As shown in this figure, the support member main bodies 6 and 7 are erected substantially at the center of the surface of the bases 4 and 5 having a sufficient area (see FIGS. 2A and 2C). Since the base portions 4 and 5 have a sufficient area, the support member main bodies 6 and 7 are secured independently. Further, as described above, the support member bodies 6 and 7 have a predetermined height, and are configured such that the protruding portions 8 and 9 protrude from a part thereof (FIG. 2 (b), (Refer FIG.3 (b)). That is, the support member main bodies 6 and 7 are provided with projecting portions 8 and 9 at intermediate positions in the height direction, and the projecting portions 8 and 9 support the horizontal member 3 to thereby increase the height of the horizontal member 3. In addition, it holds the basic rebar. Therefore, the horizontal member 3 supports any one of a plurality of reinforcing bars (for example, main reinforcing bars and base reinforcing bars) constituting the basic reinforcing bar, and the protruding portion 8 matches the position (height). , 9 are adjusted (height H1).

  Further, the support member bodies 6 and 7 are provided with two kinds of projecting pieces 61a, 61b, 62a, 62b, 71a, 71b, 72a, 72b that project in a direction orthogonal to the projecting portions 8, 9. The first protrusions 61a, 61b, 71a, 71b protrude from the side portions on both sides of the support member main bodies 6, 7, and the height H2 of the upper end edge thereof is on the upper surface of the protrusion portions 8, 9. It is adjusted slightly lower than the height H1 (see FIGS. 3B and 3C). Thereby, it is a reinforcing bar other than what is supported by the height of the protrusions 8 and 9 (horizontal member 3) among the reinforcing bars constituting the basic reinforcing bar, and the width direction of the foundation (the same direction as the horizontal member 3). ) Can be adjusted in height when holding the reinforcing bars (for example, the horizontal bars of the base bars). The projecting pieces 61a, 61b, 71a, 71b may have an integrated shape that is continuous at the lower edge (see the projecting pieces 61, 71 in FIG. 1), but may be configured individually.

  On the other hand, the second projecting pieces 62a, 62b, 72a, 72b are provided so that the lower end edges thereof are approximately the same as the predetermined height H1, and the reinforcing bars (for example, the horizontal bars of the base muscle) are provided as described above. When holding, it can come into contact with the upper edge of the reinforcing bar. Therefore, the reinforcing bar can be easily disposed by inserting it in the middle of the first protrusions 61a, 61b, 71a, 71b and the second protrusions 62a, 62b, 72a, 72b. Will be determined. In addition, the gap between the projecting pieces is slightly larger than the thickness (cross-sectional diameter) of the reinforcing bar, so that the reinforcing bar can be inserted gently, and the gap can be used exclusively for positioning. If the protrusion is made of a synthetic resin, the reinforcing bar can be held (strongly held) by its elasticity.

  Further, on the opposite side of the support member main bodies 6 and 7, tongue pieces 63 and 73 are provided so as to hang downward on the side surfaces (see FIGS. 2B and 3A). The lower end edges of the parts 63 and 73 reach the vicinity of the bases of the projecting parts 8 and 9, and can be urged downward in contact with the upper surface of the horizontal member 3 in contact with the projecting parts 8 and 9.

  The support member bodies 6 and 7 of the present embodiment are integrally formed of synthetic resin, and the tongue pieces 63 and 73 are provided so as to be elastically deformable by the elastic force of the synthetic resin. Yes. Further, the support member main bodies 6 and 7 of the present embodiment are formed with belt-like members having an appropriate width at the outer periphery, the appropriate portions inside thereof are hollow, and ribs are provided at locations where the hollow portions are to be reinforced. It is configured. The range surrounded by the outer peripheral part can be divided into upper parts 6a, 7a, intermediate parts 6b, 7b, and lower parts 6c, 7c. The upper parts 6a, 7a and lower parts 6c, 7c have a relatively wide range. Therefore, many ribs are provided. A hollow portion is provided in a range formed by these ribs and the outer peripheral portion. Since the intermediate portions 6b and 7b are narrow portions, no ribs are provided, but a hollow portion is formed. As described above, these hollow portions are for ensuring fluidity when placing concrete.

  Next, the detail of the protrusion parts 8 and 9 is demonstrated. FIG. 4 is a diagram showing an enlarged state of one protrusion 8. As shown in this figure, the projecting portion 8 includes a main body portion 81 in which parallel piece portions having a substantially H-shaped cross section are arranged above and below, and a contact surface portion formed with the same width dimension above the main body portion 81. 82. The abutment surface portion 82 functions as an abutment surface whose upper surface permits the abutment of the tip portion 31 of the horizontal member 3. Further, the contact surface is divided into a high level surface and a low level surface, the tip side of the protruding portion 8 is a high level surface portion 83, and the base side is a low level surface portion 84. It is designed to fit. That is, the upper piece 3a of the horizontal member 3 is configured by changing the height at the distal end portion 31, and the distal end portion 31 of the horizontal member 3 and the contact surface of the protruding portion 8 are fitted. It is possible to contact.

  In addition, a hole 85 for screwing the fixing screw A (FIG. 1) is provided in the lower surface portion 84 of the protruding portion 8 shown in the figure. In order to provide this hole 85, that is, the fixing screw A is screwed. Thick regions RW1 and RW2 are provided as regions for allowing. The thick regions RW1 and RW2 are obtained by thickening the rib portion R2 of the main body 81 having the H-shaped cross section and the rib portion R1 for reinforcing the contact surface portion 82 provided on the upper portion of the main body 81. It is.

  Further, on both sides of the main body portion 81 of the protruding portion 8, locking portions 86 and 87 that protrude in the horizontal direction are provided. It can be entered. The engaging portions 86 and 87 are engaged with the notch 33 of the horizontal member 3, thereby restricting the movement of the horizontal member 3 in the longitudinal direction. The contact state is maintained.

  In addition, by utilizing the configuration of the protruding portion 8 as described above, a protruding portion 35 is provided on the inner side (facing surface side) of the opposed piece portions 3 b and 3 c of the horizontal member 3, and the protruding portion 35 is provided on the protruding portion 8. It can also be set as the structure latched by the main-body part 81. FIG. In the present embodiment, the protruding portion 35 is provided so that a U-shaped cut is formed in the opposing piece portions 3b and 3c and the U-shaped portion is bent inward (facing surface side). In FIG. 4, only one side (opposing piece 3 b) is shown, but the other (facing piece 3 c) is similarly configured. With the above configuration, the main body portion 81 of the protruding portion 8 has an H-shaped cross section, so that the portion where the rib portion R2 is formed is narrower than both ends of the parallel piece portion to form a concave portion. By engaging the projection 35 in the concave portion, the projection 35 can be locked. As described above, the front end portion 31 of the horizontal member 3 can be prevented from separating upward from the abutting surface portion 82 of the protruding portion 8 by the locking by the protruding portion 35. The contact surface portion 82 is formed with notches 88 and 89 for facilitating the passage of the projection 35.

  Next, the detail of the tongue piece part 63 is demonstrated. As shown in FIG. 4A, the tongue piece 63 is formed on a part of the support member main body 6. Specifically, a plate-like member 64 formed in an oblique shape is provided above the end surface of the support member main body 6 from the position where the protrusion 8 is provided, and from the surface of the plate-like member 64. A tongue piece 63 is provided so as to protrude toward the protrusion 8. The tip of the tongue piece 63 is provided with the tip facing downward so as to reach the vicinity of the base of the protrusion 8. The tip of the tongue piece 63 is not in contact with the surface of the protrusion 8 but has a slight gap, which is narrower than the plate thickness of the upper piece 3 a of the horizontal member 3. It is provided in the state. Further, when the front end portion 31 of the horizontal member 3 is installed at a predetermined position of the protruding portion 8, the plate-like member 64 of the tongue piece 63 contacts the edge of the front end portion 31 of the horizontal member 3 and the support member main body When the elastic force is deformed so as to curve toward 6 and the restoring force is increased, the tip of the tongue piece 63 is disengaged from the tip 31 of the horizontal member 3 and moves to the upper surface of the horizontal member 3. It becomes. By restoring the tongue piece 63, the tip of the tongue piece 63 can come into contact with the upper surface of the horizontal member 3, and the horizontal member 3 just contacts the contact surface 82 of the protrusion 8. In this state, the horizontal member 3 is urged downward to maintain the state.

  Accordingly, as shown in FIG. 3B, the tongue piece 63 is primarily formed by bringing the tip portion 31 of the horizontal member 3 into contact with the contact surface portion 82 of the protruding portion 8. 3 is restricted, and the horizontal member 3 is positioned by locking the notch 33 of the horizontal member 3 with the locking portions 86 (87). It should be noted that play between the abutment surface portion 82 and the horizontal member 3 is not caused by the downward biasing by the tongue piece portion 63 when the notch 33 is locked by the locking portion 86 (, 87). It can be done.

  Since the present embodiment is configured as described above, as shown in FIG. 5, the two support members 1 and 2 are opposed to each other (while the protruding portions 8 and 9 are arranged to face each other). The both ends 31 and 32 of the horizontal member 3 are brought into contact with the protruding portions 8 and 9 of the both supporting members 1 and 2 to connect the horizontal member 3 to the supporting members 1 and 2. be able to.

  At this time, when there are steps on the contact surface portions 82 and 92 of the protrusions 8 and 9, the contact positions are guided by fitting the both ends 31 and 32 of the horizontal member 3 to the steps. (See FIG. 1). Further, when the locking portions 86, 87, 96, 97 are provided on the protruding portions 8, 9, the notches 33, 34 of the horizontal member 3 are formed by the locking portions 86, 87, 96, 97. By locking, the movement of the horizontal member 3 in the longitudinal direction is limited. Further, in the case where the projecting portions 35 and 36 are provided on the opposing piece portions 3 b and 3 c of the horizontal member 3, the projecting portions 35 and 36 are formed on the side portions of the main body portions 81 and 91 of the projecting portions 8 and 9. By engaging with the concave portion, the both ends 31, 32 of the horizontal member 3 can be prevented from coming out upward.

  Then, by bringing the both ends 31, 32 of the horizontal member 3 into contact with the protruding portions 8, 9, as described above, the tongue pieces 63, 73 urge the upper surfaces of the both ends 31, 32 downward. Therefore, the tongue pieces 63 and 73 can eliminate play between the projecting portions 8 and 9 and the horizontal member 3, and can bring the contact state of the horizontal member 3 into a predetermined state.

  In such a state that the both ends 31 and 32 of the horizontal member 3 are supported while being in contact with the projecting portions 8 and 9, the fixing screws A and B are further inserted from above the both ends 31 and 32 of the horizontal member 3. And the horizontal member 3 can be firmly connected by screwing it into the protrusions 8 and 9.

  As described above, since different base members are assembled by connecting different members, for example, when the width of the base structure is different, only the length dimension of the horizontal member 3 is set. It becomes possible to respond by changing. That is, if several types of horizontal members 3 having different lengths are prepared in advance with the same configuration of both ends 31 and 32, it is possible to use them in a foundation structure of various sizes.

  Note that the two support members 1 and 2 are provisionally arranged with an appropriate interval at the time of connection (assembly) with the horizontal member 3, but this interval is changed at the time of connection (assembly) work. That's fine. This is possible because the two support members 1 and 2 are provided independently.

  Next, the usage pattern of this embodiment will be described. FIG. 6 is an explanatory diagram showing a use state. As shown in this figure, the foundation rebar holder constituted by connecting the horizontal member 3 to the two support members 1 and 2 is disposed along both the longitudinal direction X and the width direction Y of the foundation structure. Reinforcing bars can be held. That is, the horizontal member 3 can support the lower ones of the main reinforcing bars constituting the foundation reinforcing bars (referred to as the lower reinforcing bars) Ba1 and Ba2. At this time, since the heights of the tips 31 and 32 of the horizontal member 3 are partially lower, the lower end bars Ba1 and Ba2 are fixed at the positions of both ends 31 and 32 of the horizontal member 3. Will be placed. Further, the transverse bar Bb1 constituting the base bar is supported by the projecting pieces 61, 62, 71, 72 of the support members 1, 2. The vertical bar Bb2 is arranged in a state of being placed on the upper side of the horizontal bar Bb1. In addition, since the same protrusion piece is provided also on the opposite side of the supporting member main bodies 6 and 7 (refer FIG. 3), it can select suitably according to the position where the horizontal streak Bb1 is arranged.

  Further, the stirrup Bc1 is supported by the lower end bars Ba1 and Ba2 placed on the horizontal member 3. Since the stirrup Bc1 is a rectangular reinforcing bar that surrounds the main bars (upper and lower bars), if the interval at which the main bars are arranged (for example, the interval between the lower bars Ba1 and Ba2) is different, the stirrup Bc1. The rectangles of different sizes are used. That is, by changing the length dimension (length in the longitudinal direction) of the horizontal member 3 as in the present embodiment, the lower end bars Ba1 and Ba2 are arranged at desired positions according to the interval between the main bars ( Therefore, the stirrup muscle Bc1 is inevitably supported by the main muscle so as to pass outside the main muscle.

  Next, a second embodiment will be described. FIG. 7 is a perspective view showing an outline of the present embodiment. As shown in this figure, the support members 101 and 102 of this embodiment are the same as those of the first embodiment, but the forms of the protrusions 108 and 109 are different. The protruding portions 108 and 109 of the present embodiment are the same as the first embodiment in that the protruding portions 108 and 109 protrude from the support member main bodies 106 and 107, but a part of the configuration is different from the first embodiment. It is. That is, the projecting portions 108 and 109 are configured only by the main body portions 181 and 191 having a substantially H-shaped cross section, and when the parallel piece portions are arranged up and down, one of the parallel piece portions located above is horizontally mounted. It functions as a contact surface of the member 103. Further, since the contact surface portion as in the first embodiment is not provided, the contact surface is not provided with a step.

  In the case of the above configuration, the horizontal member 103 supported by the protruding portions 108 and 109 has a configuration of both ends 131 and 132 that is different from that of the first embodiment. That is, the upper piece 103a constituting the horizontal member 103 is not provided with a step, and the upper piece 103a is formed in a flat shape at both ends 131 and 132 of the horizontal member 103.

  Moreover, since the notched part is not provided in the opposing piece parts 103b and 103c of the horizontal member 103 of this embodiment, the engaging part which should engage this is also provided in the protrusion parts 108 and 109 of this embodiment. It is not done. Furthermore, since both ends 131 and 132 of the horizontal member 103 are not fixed by fixing screws, the horizontal member 103 does not have through holes, and the protruding portions 108 and 109 have screwing regions of the fixing screws. Not provided.

  In the above configuration, the fixing method of the horizontal member 103 is simplified, and the horizontal member 103 can be supported by bringing both ends 131 and 132 into contact with the protruding portions 108 and 109. Then, the state in which both ends 131 and 132 of the horizontal member 103 are in contact with the protruding portions 108 and 109 is maintained.

  In the present embodiment, the horizontal member 103 is fixed exclusively by the tongue pieces 163 and 173. The configuration of the tongue pieces 163 and 173 is the same as that of the first embodiment. The tongue pieces 163 and 173 are provided with the tips downward from above the protrusions 108 and 109, and the tip portions and the protrusions 108 and 109 above. A gap that is narrower than the thickness of the upper piece 103a of the horizontal member 103 is formed between the parallel pieces that are positioned. Therefore, both ends 131 and 132 of the horizontal member 103 are brought into contact with the projecting portions 108 and 109, and the both ends 131 and 132 are moved toward the support member main bodies 106 and 107, whereby the both ends 131 and 132 are moved. The upper piece 103a is sandwiched between the protrusions 108 and 109 and the tongue pieces 163 and 173. That is, when both ends 131 and 132 of the horizontal member 103 move, the tongue pieces 163 and 173 are elastically deformed, thereby allowing the insertion of the upper piece 103a.

  Even after the upper piece 103a is inserted, the tongue pieces 163 and 173 attempt to restore to the original state by the restoring force (the leading end to the predetermined gap with the parallel piece on the upper side of the protrusions 108 and 109). However, since the upper piece 103a of the horizontal member 103 exists, as a result, the tongue pieces 163 and 173 are elastically deformed, and a restoring force is applied to the upper piece 103a. It will continue. The lateral member 103 can be fixed by increasing the urging force at this time.

  As described above, according to the present embodiment, the horizontal member 103 can be coupled to the support members 101 and 102 by the biasing force of the tongue pieces 163 and 173. In this case, since fixing with a fixing screw is not required, it can be immediately installed at the foundation rebar construction site.

  Further, in the present embodiment, a reinforcing bar placing portion 137 that protrudes in the short direction from the vicinity of the center of the horizontal direction of the horizontal member 103 is provided. The reinforcing bar placing portion 137 is mainly used for placing the transverse muscle of the base muscle, but the placement of the transverse muscle is performed exclusively by the projecting pieces 161, 162, 171, 172. When 102 is installed at a large distance (the horizontal member 103 is long), the horizontal streak can be placed even at the intermediate point.

  Next, a third embodiment will be described. FIG. 8 is a perspective view showing an outline of the present embodiment. As shown in this figure, in the present embodiment, the upper surface portion 211 of the support member 201 (the other support member (not shown) is configured in the same manner, but only one support member will be described here) has an appropriate area. It is comprised so that it may have, and it is comprised so that a formwork can be installed in this upper surface part 211. FIG.

  Specifically, the upper surface portion 211 of the support member 201 is formed in a rectangular shape, and the formwork installation portion 212 is provided on the upper surface portion 211. This formwork installation part 212 is formed in a substantially C shape as a whole by bending a plate-like member. Flat portions 213 and 214 are provided at both end portions so as to face each other and within an appropriate range from the tip, and can contact the upper surface portion 211 of the support member 201. In addition, a mold placement surface 215 having the same area as the upper surface portion 211 of the support member 201 is provided on the upper portion of the mold placement portion 212, and the bottom of the mold frame is provided on the mold placement surface 215. Can be placed. In addition, the mold placement surface 215 is provided with an appropriate distance from the flat portions 213 and 214 formed at both ends of the mold installation portion 212, and the mold is placed at an appropriate height from the upper surface portion 211 of the support member 201. The frame can be placed, and the height can be changed according to the bending position of the plate-shaped member described above.

  By the way, the first through hole HL1 is formed in one flat surface portion 213, and a portion of the mold placement surface 215 located immediately above the first through hole HL1 includes the second through hole HL1. Through-hole HL2 is formed. Both the through holes HL1 and HL2 are for using the screw C. The screw C is for fixing one flat surface portion 213 to the upper surface portion 211 of the support member 201. Therefore, the second through hole HL2 is for inserting the screw C and a screwdriver for screwing. Is. Accordingly, the first through hole HL1 is large enough to allow the threaded portion of the screw C to pass therethrough but cannot pass through the head portion, and the second through hole HL2 can be inserted into the head portion of the screw C and the driver. It is the size of. Here, since the formwork installation part 212 of this embodiment is the structure which bent the plate-shaped member in the substantially C shape, the screw | thread C is made into the 1st without inserting the 2nd through-hole HL2. It is possible to arrange in the through hole HL1. Accordingly, at least the second through hole HL2 is sufficient as long as the driver can pass therethrough.

  In addition, although the screw groove for screwing the screw C into the upper surface part 211 of the support member 201 is not provided, this is because the screw C is screwed into the upper surface part 211 when the support member 201 is made of synthetic resin. This is because a fixing method is possible. When this is fastened with a bolt or the like, a configuration may be adopted in which a female screw is engraved on the upper surface portion 211 or a nut is embedded.

  Furthermore, in the illustrated embodiment, a connecting base plate 216 is used. The connecting base plate 216 is formed by bending a part of the plate-like member as a whole. The main body portion has a rectangular plane so as to be in close contact with the upper surface portion 211 of the support member 201, and a downward bent portion (hereinafter referred to as a lower piece portion) 217 (217a) is formed at the center of the long side portion of the rectangle. , 217b (not shown in the drawing)), and upward bent portions (hereinafter referred to as upper piece portions) 218, 219 are provided at both ends thereof. The lower piece portion 217 abuts on both sides in the longitudinal direction of the upper piece portion 211 of the support member 201, and the upper piece portions 218 and 219 are on the side portions on both sides of the flat portions 213 and 214 of the mold installation portion 212. It is comprised so that it may contact | abut.

  Accordingly, when the connecting base plate 216 is installed on the upper surface portion 211 of the support member 201 (the main body portion is in close contact), the lower piece portions 217 (217a, 217b) abut on both sides of the upper surface portion 211, and the upper surface portion The movement of 211 in the short direction (short side direction of the rectangle) is restricted. That is, the connecting base plate 216 is allowed to move only in the longitudinal direction (long rectangular side direction). In addition, by installing the flat portions 213 and 214 of the formwork setting portion 212 on the connecting base plate 216 (the lower surfaces of the flat portions 213 and 214 are in close contact with the upper surface of the connecting base plate 216), the flat portions 213 and 213 As for 214, the movement to the transversal direction of the base plate 216 for a connection will be restrict | limited. In this state, by restricting the movement in the longitudinal direction, the connecting base plate 216 and the formwork installation part 212 are fixed to the upper surface part 211 of the support member 201.

  Therefore, the connection base plate 216 is provided with a third through hole HL3 so that the connection base plate 216 can be fixed at the same time when the mold installation portion 212 is fixed by the screw C. It is configured. This state is shown in FIG.

  As shown in this figure, when the connecting base plate 216 is interposed between the support member 201 and the formwork setting portion 212, the position is fixed by screwing in one place.

  Moreover, the modification of the said mold installation part 212 is shown in FIG. As shown in FIG. 10A, the formwork installation part 212 has a configuration in which a single plate-like member is bent so that the cross-sectional shape becomes a U-shape. Also in this case, since the bent downward bent portions abut on both sides of the upper surface portion 211 of the support member 201, the movement of the upper surface portion 211 in the short direction is also limited. Then, by using the first through hole HL1 drilled in the main body portion of the formwork installation part 212, the screw C is screwed into the upper surface part 211, so that the formwork installation as shown in FIG. The portion 212 can be attached to the upper surface portion 211 of the support member 201.

  As described above, by providing the mold installation part 212 on the upper surface part 211 of the support member 201, the lower end of the mold can be placed on the mold installation part 212. That is, for example, when the supporting member 201 is made of a synthetic resin such as plastic, when the lower end of the mold is in direct contact with the upper surface portion 211, particularly when the mold is placed while adjusting the position of the mold, There is a possibility that the surface of the upper surface portion 211 may be scraped off due to contact (sliding contact), but such a possibility can be obtained by configuring the mold installation portion 212 of metal and installing it on the upper surface portion 211. Can be eliminated.

  Further, as described above (as shown in FIG. 9), in the case where the formwork placement surface 215 has an appropriate distance from the flat portions 213 and 214 at both ends, the upper surface portion of the support member 201 is naturally. Since the lower end of the formwork can be placed at a position higher than 211, when the formwork is to be installed at a desired height from the position of the reinforcing bar (held), the rebar support By mounting the portion 212, the mold can be supported at the desired height.

  The embodiment of the present invention is as described above. However, the above embodiment shows an example of the present invention, and various forms can be made without departing from the gist of the present invention. For example, the second embodiment can be modified as appropriate by partially adding the configuration described in the first embodiment.

  That is, when the fixed state is insufficient only by the urging force by the tongue pieces 163 and 173, a fixing means using a fixing screw may be provided. When such a fixing screw is used, since the head of the fixing screw protrudes from the upper piece 103a of the horizontal member 103, a step may be provided as necessary. Further, when it is desired to limit the movement of the horizontal member 103 in the longitudinal direction, the opposing piece portions 103b and 103c of the horizontal member 103 are provided with notches, and the protrusions 108 and 109 are provided with locking portions. Good.

  Contrary to the above, the configuration shown in the second embodiment may be added to the first embodiment. That is, for example, the reinforcing bar placement portion 137 provided on the horizontal member 103 may be configured in addition to the horizontal member 3 of the first embodiment.

  In FIG. 1 and FIG. 5 showing the first embodiment, the horizontal member 3 is illustrated with an appropriate through hole in the upper piece 3a and the opposed pieces 3b, 3c. This is to improve the fluidity of the concrete when placing the concrete, that is, to help the concrete flow down to the lower side of the horizontal member 3 through the through hole, The size and number of holes that do not affect the strength of the horizontal member 3 are formed. Therefore, in the second and third embodiments, such a configuration can be adopted, and conversely, when the flow state of the concrete is good, the through hole may not be provided.

1, 2, 101, 102, 201 Support member 3, 103 Horizontal member 3a, 103a Upper piece 3b, 3c, 103b, 103c Opposing piece 4, 5 Base 6, 7, 106, 107 Support member body 8, 9 , 108, 109 Protruding part 31, 32, 131, 132 Horizontal member tip 35, 36 Protruding part 61, 62, 71, 72, 161, 162, 171, 172 Protruding piece 63, 73, 163, 173 Tongue piece part 81 Protruding portion body 82 Contact surface portion 83 Upper surface portion 84 Lower surface portion 85 Hole 86, 87 Locking portion 88, 89 Notch portion 137 Reinforcing bar placement portion 211 Upper surface portion 212 of support member Formwork support portions 213, 214 Plane portion 215 Formwork Mounting surface 216 Connecting base plate 217 Lower piece 218, 219 Upper piece A, B Fixing screw C Screw D Cover thickness H1, H2 Height HL1, HL2, HL3 Through hole Ba1, Ba2 Bottom muscle (main muscle)
Bb1 transverse muscle (base muscle)
Bb2 Longitudinal muscle (base muscle)
Bc1 stirrup

Claims (12)

A basic rebar holder comprising two support members and a horizontal member supported at both ends by the two support members and horizontally mounted between the support members,
The two support members are provided with a base portion having a sufficient ground contact area, a support member main body standing upright from the base portion, and protruding from the support member main body in a direction in which the horizontal member should be horizontally mounted, and A projecting portion having a contact surface that allows the front end portion of the horizontal member to contact, and a tip disposed near the projecting portion to protrude from the support member body, and the front end of the horizontal member A base reinforcing bar holder comprising an elastically deformable tongue piece that abuts against the upper surface of the horizontal member when the portion abuts against the abutment surface.   The foundation reinforcing bar holding tool according to claim 1, wherein the support member further includes a protruding piece protruding in a direction different from the protruding portion.   The horizontal member includes a notch portion that is partially cut away near the tip, and the support member further includes a locking portion that is provided on a surface of the protruding portion and locks the notch portion. The foundation reinforcing bar holder according to claim 1 or 2, characterized by.   4. The tongue piece portion according to claim 1, wherein the tongue piece portion is a tongue piece portion that comes into contact with an upper surface of the horizontal member and urges a tip portion of the horizontal member toward the contact surface. A basic reinforcing bar holder according to any one of the above.   The protrusion is a protrusion having an abutment surface that allows the abutment of the horizontal member, and the abutment surface is composed of abutment surfaces having different heights, a high surface and a low surface. The base reinforcing bar holder according to any one of claims 1 to 4, wherein the member is configured to fit into the contact surface.   6. The basic reinforcing bar holding tool according to claim 5, wherein the projecting portion has a high-order surface constituting the contact surface provided on a distal end side and a low-order surface provided on a support member main body side.   The horizontal member includes a through hole through which a fixing screw is inserted in the vicinity of both ends thereof, and the protruding portion of the support member has a region that allows the fixing screw to be screwed on a lower surface of the contact surface. The basic rebar holder according to claim 6.   The said horizontal member is provided with the reinforcing bar mounting part which protrudes in a transversal direction near the center of a longitudinal direction, The base reinforcing bar holder in any one of the Claims 1 thru | or 7 characterized by the above-mentioned.   The projecting portion has a concave portion whose side surface is continuous in the projecting direction, and the horizontal member is formed in a substantially U-shaped cross section, and from the opposing piece portion constituting the U-shape to the opposing side. The basic reinforcing bar holder according to any one of claims 1 to 8, further comprising a protruding portion that protrudes, and the protruding portion engages with a concave portion of the protruding portion.   The base reinforcing bar holding tool according to any one of claims 1 to 9, wherein the support member further includes an upper surface portion having an appropriate area and a formwork installation portion installed on the upper surface portion. 11. The formwork installation part includes an upper surface part connection part connected to the upper surface part, and a formwork placement surface configured to have a predetermined height from the upper surface part connection part. foundation rebar holder described in. The support member, the basal rebar holder according to claim 11, characterized in that with intervening connecting base plate between said upper surface portion and the upper surface portion connecting portion.

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