JP2016075030A - Marking jig for reinforcing bar - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a marking jig that may also be used for marking diversely set insertion depths on a reinforcing bar.SOLUTION: A marking jig for a reinforcing bar includes a jig body 10 and a masking member 20. The jig body 10 has an abutted surface 13a abutted on a tip of a reinforcing bar 1, and a support wall 14 extending linearly along the reinforcing bar 1, in a direction orthogonal to the abutted surface 13a. The masking member 20 has a fitting wall 21 that extends along the support wall 14 of the jig body 10, and masking walls 22, 23 opposite an outer peripheral surface of the reinforcing bar 1. Windows 22a, 23a are formed on the masking walls 22, 23, for applying a coating material and forming a mark on the outer peripheral surface of the reinforcing bar 1. By inserting a bolt 31 into a thorough-hole 32 formed on the support wall 14 and screwing on a female screw part 33 on the fitting wall 21, the masking member 20 is connected selectively to one of a plurality of connecting positions on the support wall 14. This allows a distance to be adjusted between the abutted surface 13a and the windows 22a, 23a.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a marking jig used to mark a reinforcing bar with a mark indicating a set insertion depth into a joint.

  FIG. 5 shows a structure corresponding to FIG. As shown in the figure, when connecting a pair of screw rebars 1 on the same straight line, the grout material is injected from the inlet 2a formed at the center of the joint 2 after the end of the screw rebar 1 is screwed into the tubular joint 2. (Not shown) is injected.

  By the way, in order to obtain sufficient connection strength between the screw rebars 1, it is necessary to set the screwing depth of each screw rebar 1 to the joint 2 to a set amount. Therefore, the mark 3 is applied by applying or spraying a paint to a position away from the tip 1a of the screw rebar 1. The distance between the mark 3 and the tip 1a of the screw rebar 1 corresponds to the set screwing depth. The set screwing depth has an allowable range, and the length of the mark 3 (the dimension in the longitudinal direction of the reinforcing bar 1) is determined in accordance with the allowable range.

  The operator can confirm that the set screwing depth is ensured by seeing that both ends 2b of the joint 2 are at positions corresponding to the marks 3 of the threaded reinforcing bar 1. When inspecting the connected state, the screwing depth of the screw rebar 1 can be confirmed from the positional relationship between the mark 3 and both ends 2b of the joint 2.

  The jig for marking includes, for example, an abutting surface and a marking wall extending linearly orthogonal to the abutting surface. A window is formed in the marking wall. The distance of the window from the abutting surface corresponds to the set screwing depth. A mark is applied to the outer peripheral surface of the screw rebar 1 from the window in a state where the marking wall is attached to the screw rebar and the abutting surface is abutted against the screw rebar.

Japanese Patent Laid-Open No. 10-266464

  The set screwing depth varies depending on the diameter of the reinforcing bar. Therefore, when marking is performed using a jig as described above, it is necessary to prepare many kinds of jigs.

The rebar masking jig of the present invention is made to solve the above problems,
A jig body, a masking member, and a coupling means for coupling the masking member to the jig body,
The jig body has an abutting surface that abuts against the tip of the reinforcing bar, and a support wall that extends linearly in a direction perpendicular to the abutting surface and extends along the reinforcing bar,
The masking member has a mounting wall along the support wall of the jig body, and a masking wall that intersects with the mounting wall and faces the outer peripheral surface of the reinforcing bar, and the masking wall includes the reinforcing bar. A window is formed to form marks by attaching paint to the outer peripheral surface,
The connection means selectively connects the mounting wall of the masking member to one of a plurality of connection positions arranged along the longitudinal direction of the support wall of the jig body.

  According to the above configuration, the distance from the abutment surface of the jig body to the window of the masking member can be selected, and the distance from the reinforcing bar tip differs depending on the diameter of the reinforcing bar, i.e., different set insertion depths. A mark representing the thickness can be applied to the reinforcing bar. As a result, it is not necessary to prepare many kinds of marking jigs.

Preferably, the connecting means includes a bolt, a through hole formed in a support wall of the jig body and through which the bolt is inserted at the connection position, and a female screw disposed on the mounting wall of the masking member and screwed into the bolt. Part.
According to this, the structure of a connection means can be simplified.

Preferably, the through hole is an elongated hole extending linearly along the longitudinal direction of the support wall, and further includes positioning means, and the positioning means is spaced apart from the support wall in the longitudinal direction. Connecting the masking member by having a plurality of formed fitting holes and fitting protrusions formed on the mounting wall, and fitting the fitting protrusions into one of the plurality of fitting holes. Select a position.
According to the above configuration, the position of the masking member can be easily adjusted by sliding the masking member along the support wall of the jig body with the bolts loosened.

Preferably, the masking member has a pair of masking walls, the windows having different lengths in the longitudinal direction of the support wall are formed on the masking walls, and further has an orientation determining means, and the orientation determining means Has a plurality of fitting holes formed in the supporting wall at intervals in the longitudinal direction thereof, and fitting protrusions formed in the mounting wall, and the fitting protrusions are formed in the longitudinal direction of the supporting wall. In the direction orthogonal to the direction, the fitting hole that is offset from the female screw portion and is far from the abutment surface among the plurality of fitting holes extends in the longitudinal direction of the support wall and extends the through hole. The fitting hole is arranged so as to be biased to one side as viewed from the passing reference line, and the fitting hole close to the abutting surface is arranged to be biased to the other side as seen from the reference line, and the fitting protrusions are arranged as the plurality of fitting holes. By selectively fitting into one of the above, the masking member To determine the orientation.
According to the above configuration, windows having different lengths can be selected by changing the orientation of the masking member, and thus marks having different lengths can be selected.

Preferably, the jig main body has a shielding wall that intersects the support wall and is continuous, and the shielding wall is shorter when the fitting protrusion is fitted in a fitting hole far from the abutting surface. When the fitting protrusion is fitted in the fitting hole close to the abutting surface, the longer window is shielded.
According to the above configuration, it is possible to undoubtedly mark the selected window by shielding the window that is not selected.

  According to the reinforcing bar marking jig of the present invention, marks representing different set insertion depths can be used in combination on the reinforcing bar, and it is not necessary to prepare many kinds of marking jigs.

The reinforcing bar marking jig which constitutes one embodiment of the present invention is shown in a state where the marking member is positioned to mark a large diameter reinforcing bar, (A) is a side view, and (B) is a part shown together with the reinforcing bar. The side view made into the cross section, (C) is a top view, (D) is a top view shown by making a partial cross section, (E) is sectional drawing which follows the EE line in FIG. 1 (A). The marking jig is shown in a state where the marking member is positioned to mark a small-diameter rebar, (A) is a side view, (B) is a side view with a partial cross section shown with the rebar, and (C) is FIG. 2D is a plan view showing a partial cross-section, and FIG. 2E is a cross-sectional view taken along line EE in FIG. The jig | tool main body of the marking jig | tool is shown, (A) is a side view, (B) is a top view, (C) is sectional drawing which follows the CC line in FIG. 3 (A). The marking member of the marking jig is shown, (A) is a side view, (B) is a sectional view taken along line BB in FIG. 4 (A), and (C) is a line CC in FIG. 4 (A). FIG. It is sectional drawing which shows the connection structure of the marked reinforcement and a coupling.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. As shown in FIGS. 1 and 2, the reinforcing bar marking jig includes a jig body 10 and a marking member 20.

  As shown in FIG. 3, the jig body 10 includes a handle 11 made of, for example, a pipe, and a plate material 12 fixed to the handle 11. The plate 12 is formed, for example, by bending a metal plate, and includes an abutting wall 13, a support wall 14 that extends linearly perpendicular to the abutting wall 13, and a pair of side walls 15 and 16. The front surface of the abutting wall 13 is provided as an abutting surface 13a.

  The pair of side walls 15 and 16 are connected to both side edges of the support wall 14 and are orthogonal to the support wall 14. Accordingly, as shown in FIG. 3, the plate member 12 has a U-shaped cross-sectional shape. One side wall 15 (shielding wall) is wider than the other side wall 16.

  As shown in FIG. 4, the masking member 20 has a mounting wall 21 and a pair of masking walls 22 and 23 that are connected to both side edges of the mounting wall 21 at right angles, and has a U-shaped cross section. Windows 22a and 23a are formed in the masking walls 22 and 23, respectively. The length Lx of the window 22a (the dimension in the longitudinal direction of the support wall 14) is larger than the length Ly of the window 23a.

  The masking member 20 is connected to the jig body 10 by adjusting the position by the connecting means 30. The connecting means 30 includes a bolt 31, a through hole 32 formed in the support wall 14 of the jig body 10, and a female screw portion 33 formed in the center of the mounting wall 21 of the masking member 20. Yes. The through hole 32 extends in the longitudinal direction of the support wall 14.

  The bolt 31 is passed through the through hole 32 of the support wall 14 and screwed into the female thread portion 33 of the mounting wall 21, so that the mounting wall 21 is connected in contact with the support wall 14. Since the through hole 32 extends along the longitudinal direction of the support wall 14, the masking member 20 can be adjusted steplessly along the longitudinal direction with respect to the support wall 14. In the present embodiment, the positioning means 40 adjusts the position stepwise along the longitudinal direction.

The positioning means 40 (orientation determining means) has a plurality of fitting holes 41 a to 41 h formed in the support wall 14 and fitting protrusions 42 formed in the mounting wall 21.
As shown in FIG. 3B, the fitting holes 41 a to 41 h are connected to the through hole 32 and elongated in a direction perpendicular to the longitudinal direction of the through hole 32. The fitting holes 41 a to 41 h are arranged in the order of the reference numerals with an interval in the longitudinal direction of the support wall 14. The fitting hole 41a is farthest from the abutting surface 13a, and the fitting hole 41h is the closest.

  The fitting holes 31a to 31c of the group far from the abutting surface 13a are biased to one side when viewed from a virtual reference line extending in the longitudinal direction through the through hole 32, and the side wall 16 of the jig body 10 is displaced. It extends toward. The fitting holes 31 d to 31 h of the group closer to the abutting surface 13 a are biased to the other side as viewed from the reference line and extend toward the side wall 15.

  As shown in FIG. 4B, the fitting protrusion 42 is elongated from the female screw portion 33 toward the one side wall 22. The masking member 20 is positioned by selectively fitting the fitting protrusion 42 into one of the fitting holes 31a to 31h.

  As described above, since the fitting holes 31a to 31c and the fitting holes 31d to 31h are formed on the opposite sides with the through hole 32 interposed therebetween, the orientation of the cover member 20 is determined by selecting the fitting holes 31a to 31h. Can also be changed. Details will be described below.

  As shown in FIG. 1, when the fitting protrusion 42 is fitted into one of the fitting holes 31 a to 31 c far from the abutting surface 13 a, the masking wall 22 of the masking member 20 extends along the side wall 16 and the masking wall 23. Is disposed along the side wall 15. Therefore, the window 22 a of the masking wall 22 is exposed and the window 23 a of the masking wall 23 is hidden by the side wall 15.

As shown in FIG. 2, when the fitting protrusion 42 is fitted into one of the fitting holes 31 d to 31 h close to the abutting surface 13 a, the masking wall 22 of the masking member 20 extends along the side wall 15 and the masking wall 23. Will be arranged along the side wall 16. Therefore, the window 23 a of the masking wall 23 is exposed, and the window 22 a of the masking wall 22 is hidden by the side wall 15.
As described above, the positioning means 40 has a function of selecting the orientation of the masking member 20 and thus selecting the windows 22a and 23a.

  The operation of the marking jig having the above configuration will be described. The position and orientation of the masking member 20 are adjusted according to the diameter of the reinforcing bar 1. The larger the diameter of the reinforcing bar 1 is, the more the fitting protrusion 42 of the masking member 20 is fitted into the fitting hole farther from the abutting surface 13a. The fitting protrusion 42 of the member 20 is fitted.

  FIG. 1 shows the position and orientation of the masking member 20 when the diameter of the reinforcing bar 1 is large (for example, when it is the second largest). As shown in FIG. 1, the fitting protrusion 42 of the masking member 20 is fitted into the fitting hole 41 b of the jig body 10, the window 22 a of the masking member 20 is exposed, and the window 23 a is hidden by the side wall 15.

  As shown in FIG. 1B, the abutting surface 13 a of the masking jig is abutted against the tip 1 a of the reinforcing bar 1, and the masking jig is positioned with respect to the reinforcing bar 1. The support wall 14 of the masking jig is disposed along the reinforcing bar 1, and the masking wall 22 faces the outer peripheral surface of the reinforcing bar 1. In this state, the coating material is supplied to the outer peripheral surface of the reinforcing bar 1 through the window 22a by means such as spraying, and the mark 3 shown in FIG. 5 is applied.

  Since the distance Dx between the window 22a and the abutting surface 13a is long, the distance from the end surface 1a of the reinforcing bar 1 to the mark 3 can be increased, and a relatively deep set screwing depth corresponding to the diameter of the reinforcing bar 1 Can be expressed. Further, since the length Lx of the window 22a is long, the mark 3 can represent a relatively wide allowable range.

  FIG. 2 shows the position and orientation of the masking member 20 when the diameter of the reinforcing bar 1 is small (for example, when it is the smallest). As shown in FIG. 2, the fitting protrusion 42 of the masking member 20 is fitted into the fitting hole 41 h of the jig body 10, the window 23 a of the masking member 20 is exposed, and the window 22 a is hidden by the side wall 15.

  As shown in FIG. 2 (B), the abutment surface 13a of the masking jig is abutted against the end surface 1a of the rebar 1 and the rebar 1 is positioned with respect to the rebar 1 through the window 23a. The paint is supplied to the outer peripheral surface, and the mark 3 shown in FIG. 5 is applied.

  Since the distance Dy between the window 22a and the abutting surface 13a is short, the distance from the end surface 1a of the reinforcing bar 1 to the mark 3 can be shortened, and a relatively shallow set screwing depth according to the diameter of the reinforcing bar 1 Can be expressed. Further, since the length Ly of the window 22a is short, the mark 3 can represent a relatively narrow allowable range.

  In the present embodiment, when positioning is performed corresponding to the reinforcing bar having an intermediate diameter, the fitting protrusion 42 may be fitted into any of the fitting holes 41c and 41d. In this case, the allowable range of the screwing depth may be either Lx or Ly.

The present invention is not limited to the above-described embodiments, and various aspects are possible.
The reinforcing bars are not limited to threaded reinforcing bars, but may be ordinary deformed reinforcing bars. In this case, the mark represents the set insertion depth for the joint according to the diameter of the reinforcing bar.
Instead of configuring the through hole of the jig body as an elongated hole along the support wall, the through hole may be configured with a plurality of holes arranged at intervals along the support wall. In this case, the through hole itself can also serve as a positioning means.
When the through hole of the jig body is an elongated hole formed along the support wall, the positioning means may not be provided. In this case, the masking member can be adjusted steplessly. In this case, the outer surface of the support wall of the jig body may be marked with a connection position corresponding to the reinforcing bar diameter.
The internal thread portion disposed on the mounting wall of the masking member may be a nut that is screwed with a bolt that penetrates the mounting wall.
The connecting means may employ a configuration other than the bolt and the female thread portion.
When the allowable range of the screwing depth represented by the mark is one, the number of masking walls may be one. In this case, the plurality of fitting holes are arranged in the same direction with respect to the through hole.

  The present invention can be applied to a jig for marking a reinforcing bar with a mark indicating a set insertion depth into a joint.

DESCRIPTION OF SYMBOLS 1 Reinforcement 2 Joint 3 Mark 10 Jig body 13a Abutting surface 14 Support wall 15 Side wall (shielding wall)
DESCRIPTION OF SYMBOLS 20 Masking member 21 Mounting wall 22, 23 Masking wall 22a, 23a Window 30 Connecting means 31 Bolt 32 Through hole 33 Female thread part 40 Positioning means (orientation determining means)
41a-41h Fitting hole 42 Fitting protrusion

Claims (5)

A jig body, a masking member, and a coupling means for coupling the masking member to the jig body,
The jig body has an abutting surface that abuts against the tip of the reinforcing bar, and a support wall that extends linearly in a direction perpendicular to the abutting surface and extends along the reinforcing bar,
The masking member has a mounting wall along the support wall of the jig body, and a masking wall that crosses the mounting wall and is continuous with the outer peripheral surface of the reinforcing bar, and the masking wall includes the reinforcing bar. A window is formed to form marks by attaching paint to the outer peripheral surface,
The connecting means selectively connects the mounting wall of the masking member to one of a plurality of connecting positions arranged along the longitudinal direction of the support wall of the jig body. Masking jig.   The connecting means includes a bolt, a through hole formed in a support wall of the jig body and through which the bolt is inserted at the connection position, and a female screw portion that is arranged on the mounting wall of the masking member and is screwed with the bolt. The rebar masking jig according to claim 1, comprising: The through hole is composed of an elongated hole extending linearly along the longitudinal direction of the support wall,
Further, the positioning means has a plurality of fitting holes formed in the supporting wall at intervals in the longitudinal direction, and fitting protrusions formed on the mounting wall. The rebar masking jig according to claim 2, wherein a coupling position of the masking member is selected by fitting a fitting protrusion into one of the plurality of fitting holes. The masking member has a pair of masking walls, and the windows having different lengths in the longitudinal direction of the support wall are formed on the masking walls,
Further, it has an orientation determining means, and this orientation determining means has a plurality of fitting holes formed in the supporting wall at intervals in the longitudinal direction, and fitting protrusions formed on the mounting wall. ,
The fitting projection is arranged offset from the female screw portion in a direction orthogonal to the longitudinal direction of the support wall,
Of the plurality of fitting holes, the fitting hole far from the abutment surface is arranged to be biased to one side when viewed from a reference line extending in the longitudinal direction of the support wall and passing through the through hole. The fitting hole close to the contact surface is biased to the other when viewed from the reference line,
The rebar masking jig according to claim 2, wherein an orientation of the masking member is determined by selectively fitting the fitting protrusion into one of the plurality of fitting holes.   The jig body has a shielding wall that crosses the support wall and is continuous, and the shielding wall has a shorter window when the fitting protrusion is fitted in a fitting hole far from the abutting surface. The rebar masking jig according to claim 4, wherein the rebar masking jig is shielded, and the longer window is shielded when the fitting protrusion is fitted in the fitting hole close to the abutting surface.

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