Jig for measurement

Abstract

To provide a jig for measurement that can accurately and easily measure a length from a leading end face of a flange of a member for construction.SOLUTION: A jig for measurement 1 is used in measuring the length of a member for construction B with a measurement tool M, and is attached to a flange F provided at a leading end Ba of the member for construction B to align the zero point P of the measurement tool M with the leading end face Fa of the flange F. The jig for measurement 1 comprises: a contact member 10 that extends long in a width direction of the member for construction B, and is in contact with the leading end face Fa of the flange F; a first holding member 20 and a second holding member 30 that are provided at both ends 10a, 10b in the longitudinal direction of the contact member 10, and hold the leading end face Fa of the flange F with the contact member 10 being in contact with the leading end face; and a clamp 40 that is provided on the first holding member 20, and attaches the measurement part Ma of the measurement tool M to the first holding member 20 with the zero point P of the measurement tool M being aligned with the leading end face Fa of the flange F.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a measuring jig, and particularly to a measuring jig that is used when measuring the length of a building member with a measuring instrument, is attached to a flange provided at the tip of the building member, and aligns a reference point of the measuring instrument with the tip surface of the flange.

Background Art

[0002] Conventionally, when measuring the length of a building member using a measuring instrument (e.g., a tape measure), one operator holds the reference point (zero point) provided at the measuring part of the measuring instrument so as to align it with the tip of the building member, and another operator holds the base end of the building member and reads the scale of the measuring instrument to measure the total length of the building member. Therefore, in Patent Document 1, in order to enable one person to measure the length of a building member, a measuring jig is disclosed that includes an iron plate formed with a hook part for hooking the tip of the measuring instrument and a magnet for fixing the iron plate to the building member. In this measuring jig, the iron plate is fixed with a magnet so that the hook part is aligned with the horizontal line, and the total length of the building member is measured with the measuring instrument.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Generally, in a building member, a plate-like member is welded to the end face of the building member to form a flange (e.g., a base plate of a column). Therefore, distortion (so-called hat folding) may occur on the tip surface of the flange. Therefore, in a measuring jig such as Patent Document 1, when the iron plate is attached to a part of the flange, there is a possibility that the length from the tip surface of the flange cannot be accurately measured. In addition, with a measuring jig such as that disclosed in Patent Document 1, an operation of aligning a portion (hooking portion) serving as a measurement reference with the front end surface of the flange is required, which may reduce work efficiency.

[0005] The present invention has been made in view of the above problems, and an object of the present invention is to provide a measuring jig that can easily and accurately measure the length from the front end surface of a flange of a building member.

Means for Solving the Problems

[0006] According to the measuring jig of the present invention, the problem is solved by providing a measuring jig that is used when measuring the length of a building member with a measuring instrument, is attached to a flange provided at the tip of the building member, and aligns a reference point of the measuring instrument with the front end surface of the flange. The measuring jig includes: a contact member that extends longitudinally in the width direction of the building member and contacts the front end surface of the flange; a first holding member and a second holding member provided at both ends in the longitudinal direction of the contact member for holding the contact member in contact with the front end surface of the flange; and an attachment portion provided on the first holding member for attaching a measuring portion of the measuring instrument to the first holding member in a state where the reference point of the measuring instrument is aligned with the front end surface of the flange.

[0007] With the above configuration, the first holding member and the second holding member hold the side end portion of the flange in a state where the contact member is in contact with the front end surface of the flange. Therefore, even for a flange with a curled edge, the length from the front end surface can be accurately measured. In addition, since the measuring instrument can be stably attached to the first holding member in a state where the reference point of the measuring instrument is aligned with the front end surface of the flange by the attachment portion, the measurement accuracy is improved. Furthermore, by simply attaching the measuring jig to the building member, a portion (contact surface) serving as a measurement reference can be easily aligned with the front end surface of the flange. Therefore, the length from the front end surface of the flange of the building member can be easily and accurately measured.

[0008] At this time, the first holding member extends perpendicularly from the contact member toward the flange side, and has a placement portion for placing the measurement portion, and a clamping portion provided at an extending end portion of the placement portion for clamping the flange together with the contact member in the extending direction of the placement portion. The attachment portion may be provided on the placement portion to removably attach the measurement portion to the placement portion. With the above configuration, since a placement portion for placing the measurement portion is provided, the measurement portion can be more stably attached to the measurement jig. Further, since the flange is clamped by the contact member and the clamping portion, the attachment strength of the measurement jig to the flange is improved.

[0009] At this time, the clamping portion has an extending portion extending from the extending end portion of the placement portion, and a screw portion screwed to the extending portion and contacting the flange from the extending direction. The screw portion may contact the flange from the extending direction and clamp the flange together with the contact member. With the above configuration, the measurement jig can be easily attached to the flange.

[0010] At this time, the first holding member may be attached to the contact member so as to be able to adjust the separation distance between the first holding member and the second holding member. With the above configuration, even for building members with different widths, the measurement jig can be accurately attached according to the size of the flange.

[0011] At this time, a long hole extending in the length direction is formed in the contact surface of the contact member. The first holding member has an insertion portion inserted into the long hole, and a moving portion provided on the insertion portion and movably attached to the contact member in the length direction. The separation distance may be adjusted by the moving portion moving along the long hole. With the above configuration, even for building members with different widths, the holding position can be adjusted simply by moving the moving portion according to the size of the flange, and the measurement jig can be easily attached.

[0012] At this time, the mounting portion may have a mounting clamp and press the measuring portion placed on the mounting surface of the placing portion from a direction perpendicular to the mounting surface. With the above configuration, the measuring portion can be attached to the placing portion with one touch by the mounting clamp. Therefore, the measuring instrument can be easily attached to the first holding member with the reference point of the measuring instrument aligned with the tip surface of the flange.

[0013] At this time, the measuring jig is used when measuring the length of the building member by the measuring instrument that retractably stores the measuring portion. The mounting portion has a stepped portion formed at a position corresponding to the tip surface of the flange between the first holding member and the contact member. A latching claw provided at the tip of the measuring instrument and serving as the reference point is latched on the stepped portion. The mounting portion may attach the measuring portion to the first holding member when the latching claw is latched on the stepped portion. With the above configuration, by latching the latching claw serving as the reference point on the stepped portion provided at a position corresponding to the tip surface of the flange, the reference point of the measuring instrument can be easily aligned with the tip surface of the flange.

Advantages of the Invention

[0014] According to the measuring jig of the present invention, the length from the tip surface of the flange of the building member can be easily measured with high accuracy.

Brief Description of the Drawings

[0015]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7A

Figure 7B

Figure 8

Embodiments for Carrying Out the Invention

[0016] Hereinafter, embodiments according to the present invention will be described with reference to FIGS. 1 to 8. This embodiment is used when measuring the length of a building member with a measuring instrument, and is related to a "measuring jig" that is attached to a flange provided at the tip of the building member and aligns the reference point of the measuring instrument with the tip surface of the flange.

[0017] <Measuring jig> As shown in FIGS. 1 to 6, the measuring jig 1 is an auxiliary jig that is used when measuring the length of the building member B with the measuring instrument M and is attached to the flange F provided at the tip Ba of the building member B. The measuring jig 1 is attached to the building member B in a laid-down state. In the following description, the "vertical direction" is the vertical direction when the building member B is in a laid-down state. The "front-rear direction" means the length direction of the building member B in the laid-down state, with the flange F side being the front side. The "left-right direction" is a direction orthogonal to each of the "vertical direction" and the "front-rear direction", and means the width direction of the building member B in the laid-down state.

[0018] As shown in FIGS. 1 and 2, the measuring jig 1 is a jig for measuring the distance from the tip surface Fa of the flange F with the measuring instrument M, and can align the zero point P, which is the reference point of the measuring instrument M, with the tip surface Fa of the flange F. The building member B, the flange F, and the measuring instrument M will be described first as follows.

[0019] As shown in FIGS. 1 and 2, the building member B is a member to be measured, specifically a column. Note that the building member B may be a member such as a beam in addition to the column, or may be a steel material (such as a square steel pipe) or a tubular pipe member used for various purposes. The building member B includes a long hollow column body and a flange F fixed to the tip Ba of the column body.

[0020] The flange F is, for example, a base plate and is a plate-like member welded to the tip Ba of the column body. Note that the flange F is not limited to the base plate, and may be a plate-like diaphragm, a top plate, or an end plate of a beam member fixed to the column body. Further, it may be a flange portion of a tubular pipe member or the like.

[0021] As shown in FIG. 2, the measuring instrument M is, for example, a steel tape and includes a measuring portion Ma on which a scale for measurement is formed. A zero point P serving as a length reference point is formed in the measuring portion Ma. The measuring instrument M is attached to the measuring jig 1 with the zero point P aligned with the front end surface Fa. Note that the measuring instrument M is not limited to a tape measure such as a steel tape, and may be various measuring instruments. For example, it may be a convex rule that stores the measuring portion Ma in a retractable manner. Further, it is not limited to a tape measure, and may be a measuring instrument such as a ruler.

[0022] As shown in FIGS. 1 and 2, the measuring jig 1 extends long in the left-right direction and is fixed to the building member B so as to sandwich the flange F of the building member B. Note that the measuring jig 1 may be fixed to the flange F so as to be long in the up-down direction. The measuring jig 1 includes a contact member 10 that contacts the front end surface Fa of the flange F, a first holding member 20 provided at one end portion 10a in the length direction of the contact member 10, a second holding member 30 provided at the other end portion 10b in the length direction of the contact member 10, and a mounting clamp 40 that attaches the measuring portion Ma of the measuring instrument M to the first holding member 20. The measuring jig 1 is preferably a jig made of, for example, aluminum in order to reduce its weight.

[0023] <Contact member> As shown in FIGS. 1 and 2, the contact member 10 extends longitudinally in the width direction (left - right direction) of the building member B and contacts the front end surface Fa of the flange F. As shown in FIGS. 3 to 5, the contact member 10 is a long angle steel extending in the left - right direction and is an angle member with an L - shaped cross - section. The corners at the front end and the lower end of the contact member 10 are chamfered, respectively. The contact member 10 has a contact portion 11 having a contact surface 11a that contacts the front end surface Fa of the flange F, an upper wall portion 12 that extends forward (opposite to the flange F) from the upper end 11b of the contact portion 11, and a reinforcing portion 13 formed between the contact portion 11 and the upper wall portion 12. A long hole 14 that is long in the length direction is formed in the contact surface 11a of the contact portion 11.

[0024] As shown in FIGS. 3 to 5, the contact portion 11 is a plate - like member that contacts the front end surface Fa of the flange F. When the measuring jig 1 is fixed to the building member B, the contact portion 11 contacts the flange F. Specifically, as shown in FIG. 2, in a top view of the measuring jig 1, the contact surface 11a of the contact portion 11 and the front end surface Fa of the flange F are arranged to be at the same position. Therefore, by arranging the zero point P of the measuring portion Ma on the contact surface 11a, the distance from the front end surface Fa of the flange F can be measured. In particular, even when there is a crease on the flange F, the length from the tip of the building member B can be accurately measured.

[0025] In this way, by simply attaching the measuring jig 1 to the building member B, the contact surface 11a serving as the reference for measurement can be easily aligned with the front end surface Fa of the flange F. Then, by aligning the zero point P with the contact surface 11a provided at a position corresponding to the front end surface Fa of the flange F, the distance from the front end surface Fa of the flange F can be easily measured.

[0026] As shown in FIGS. 3 to 5, the upper wall portion 12 is a plate-like member extending forward from the upper end 11b of the contact portion 11. The height of the upper wall portion 12 is configured to be lower than the height of the upper end portions of the first holding member 20 and the second holding member 30.

[0027] As shown in FIGS. 3 to 5, the reinforcing portion 13 is a rib formed to connect the contact portion 11 and the upper wall portion 12. By providing the reinforcing portion 13, it is possible to increase the rigidity while achieving weight reduction. The reinforcing portion 13 includes a first rib 13a provided at the central portion in the left-right direction of the contact member 10, a second rib 13b provided at both end portions in the left-right direction of the contact member 10, and a third rib 13c provided between the first rib 13a and the second rib 13b.

[0028] The first rib 13a is formed larger than the second rib 13b and the third rib 13c. Therefore, the rigidity can be further increased at the central portion of the contact member 10 that is easily deformed. In addition, since the second rib 13b and the third rib 13c are formed small, when the first holding member 20 and the second holding member 30 move in the left-right direction, it is possible to prevent the first holding member 20 and the second holding member 30 from interfering with the second rib 13b and the third rib 13c.

[0029] <Holding member> As shown in FIGS. 1 and 2, the pair of holding members (the first holding member 20 and the second holding member 30) are provided at both end portions in the longitudinal direction of the contact member 10, and hold the side end portions of the flange F in a state where the contact member 10 is in contact with the front end surface Fa of the flange F. Since a pair of holding members hold the side ends of the flange F, even if the flange F has a crease, the length from the front end surface Fa can be accurately measured.

[0030] The first holding member 20 is provided at one end portion 10a in the longitudinal direction of the contact member 10. The second holding member 30 is provided at the other end portion 10b in the longitudinal direction of the contact member 10. The first holding member 20 and the second holding member 30 are each attached to the contact member 10 such that the separation distance between the first holding member 20 and the second holding member 30 can be adjusted. Thus, since the separation distance between the first holding member 20 and the second holding member 30 can be adjusted, even for building members B having different widths, the measuring jig 1 can be accurately attached according to the size of the flange F.

[0031] Since the first holding member 20 and the second holding member 30 are symmetric and have the same shape, in the following description, the first holding member 20 will be described as a representative. Note that the first holding member 20 and the second holding member 30 are not limited to the same shape and may have different shapes. For example, the mounting clamp 40 may be provided only on the first holding member 20.

[0032] As shown in FIGS. 3 to 5, the first holding member 20 has an insertion portion 21 inserted into the long hole 14, a moving portion 22 movably attached to the contact member 10 in the longitudinal direction, a mounting portion 23 for mounting the measuring portion Ma, a clamping portion 24 that clamps the flange F together with the contact member 10 in the extending direction of the mounting portion 23, and a side wall portion 25 that connects the moving portion 22 and the clamping portion 24. Note that the corners at the lower right end of the first holding member 20 are each chamfered.

[0033] As shown in FIGS. 3 to 5, the insertion portion 21 projects forward from the moving portion 22 and is inserted into the long hole 14. Specifically, the insertion portion 21 has an insertion screw 21a provided on the moving portion 22, a fixing nut 21b screwed onto the insertion screw 21a, and a cap 21c for fixing the insertion screw 21a to the moving portion 22.

[0034] The insertion screw 21a is, for example, a male screw and is provided on the moving part 22 so as to project forward. The fixing nut 21b is, for example, a wing nut and is attached via a washer so as to be screwed with the insertion screw 21a.

[0035] As shown in FIGS. 3 to 5, the moving part 22 is a plate-like member and is arranged so as to abut on the abutting surface 11a of the abutting part 11. The moving part 22 is provided on the insertion part 21 and is attached to the abutting member 10 so as to be movable in the length direction. Specifically, the moving part 22 is attached to the abutting part 11 by inserting the insertion screw 21a through the long hole 14 and fastening it with the fixing nut 21b. In this way, the first holding member 20 is fixed at an arbitrary position in the long hole 14 of the abutting member 10 by fastening the insertion screw 21a with the fixing nut 21b. Also, by loosening the fixing nut 21b, the first holding member 20 can move along the long hole 14. Therefore, by moving the moving part 22 along the long hole 14, the separation distance between the first holding member 20 and the second holding member 30 is adjusted.

[0036] As shown in FIGS. 3 to 5, the placing part 23 is a plate-like member and is arranged so as to extend rearward from the upper end 22a of the moving part 22. Specifically, the base end part 23a of the placing part 23 is connected to the upper end part of the moving part 22, and the extending end part 23b of the placing part 23 is connected to the upper end part of the clamping part 24. In other words, the placing surface 23c (the upper surface of the first holding member 20) of the placing part 23 extends perpendicularly from the abutting member 10 to the flange F side (rear side).

[0037] An attachment clamp 40 is attached to the placing part 23. The measuring part Ma is placed on the placing surface 23c and is pressed from above by the attachment clamp 40. The height of the placing surface 23c of the placing part 23 is configured to be higher than the height of the upper wall part 12. Therefore, a step part 50 is formed at a position corresponding to the front end surface Fa of the flange F between the first holding member 20 and the abutting member 10 on the first holding member 20. The zero point P of the measurement unit Ma is aligned with the front end of the placement surface 23c (more specifically, the front surface of the upper end 22a of the moving part 22 in the step part 50). Then, with the zero point P of the measurement unit Ma aligned with the front end of the placement surface 23c, the measurement unit Ma is attached by the attachment clamp 40. In this way, the length from the front end surface Fa of the flange F can be easily measured.

[0038] As shown in FIGS. 3 to 5, the clamping part 24 is provided at the extended end part 23b of the placement part 23, and clamps the flange F together with the contact member 10 in the extending direction of the placement part 23. The clamping part 24 has an extending part 26 extending from the extended end part 23b of the placement part 23, and a screw part 27 screwed to the extending part 26 and contacting the flange F from the extending direction.

[0039] As shown in FIGS. 3 to 5, the side wall part 25 connects the moving part 22, the placement part 23, and the clamping part 24. The side wall part 25 is a plate-like member and is arranged to extend downward from the left end of the placement part 23. The strength of the first holding member 20 can be increased by the side wall part 25. In particular, when the flange F is clamped by the clamping part 24, it is possible to suppress the bending of the extending part 26. Further, since the side wall part 25 is provided only at the left end of the placement part 23, weight reduction can be achieved.

[0040] As shown in FIGS. 3 to 5, the extending part 26 is a plate-like member and is arranged to extend downward from the extended end part 23b of the placement part 23. Note that the corners at the left end of the extending part 26 are chamfered. The length of the extending part 26 in the left-right direction is formed longer than the length of the moving part 22. Therefore, the extending part 26 is arranged to project beyond the left end of the placement part 23 (side wall part 25). A screw hole 26a into which the screw part 27 is screwed is formed in the projecting part of the extending part 26.

[0041] As shown in FIG. 6, the screw portion 27 abuts on the flange F from the extending direction (front-rear direction) and sandwiches the flange F together with the abutting member 10. The screw portion 27 has a fixing screw 27a that abuts on the flange F and a gripping portion 27b for rotating the fixing screw 27a. The fixing screw 27a is screwed into the screw hole 26a of the extending portion 26. Then, by rotating the gripping portion 27b, the tip of the fixing screw 27a abuts on the flange F.

[0042] In this way, since the flange F is sandwiched by the screw portion 27 and the abutting portion 11, the measuring jig 1 can be easily and firmly attached to the flange F. Note that, as shown in FIG. 6, the flange F is sandwiched by the screw portion 27 and the abutting portion 11, but it is not limited thereto. For example, the flange F may be sandwiched by the screw portion 27 and the moving portion 22. Further, the flange F may be sandwiched by a clamp member or may be sandwiched by the elastic force of a spring member.

[0043] <Mounting portion> As shown in FIG. 2, the mounting clamp 40 is a mounting portion for attaching the measuring portion Ma of the measuring instrument M to the first holding member 20 in a state where the zero point P of the measuring instrument M is aligned with the front end surface Fa of the flange F. The mounting clamp 40 is provided on the first holding member 20 (specifically, the mounting surface 23c of the mounting portion 23) and the second holding member 30. However, it is not limited thereto, and the mounting clamp 40 may be provided on either one of the first holding member 20 and the second holding member 30.

[0044] As shown in FIGS. 7A and 7B, the mounting clamp 40 is, for example, a toggle clamp. When the clamping portion 24 sandwiches the flange F, the measuring portion Ma is attached to the mounting portion 23. The mounting clamp 40 has a base portion 41 attached to the mounting portion 23, a rotating portion 42 pivotally supported by the base portion 41 and rotating, a pressing portion 43 rotated by the rotating portion 42, an operating portion 44 for rotating the pressing portion 43, and a link portion 45 that rotatably connects the operating portion 44. Note that the mounting clamp 40 (mounting portion) is not limited to a toggle clamp, and any member that can attach the measuring unit Ma to the first holding member 20 may be used, such as a magnet member or a spring member. For example, the measuring unit Ma may be attached to the mounting portion 23 by magnetic force or by elastic force.

[0045] When the operator operates the operation unit 44 from the state shown in FIG. 7A, the rotating unit 42 is rotated by the link unit 45, and the pressing unit 43 is moved downward by the rotating unit 42. Then, as shown in FIG. 7B, the pressing unit 43 presses the measuring unit Ma placed on the mounting surface 23c of the mounting portion 23 from the direction (upward) orthogonal to the mounting surface 23c.

[0046] In this way, the measuring unit Ma can be attached to the mounting portion 23 with one touch by the mounting clamp 40. Therefore, the mounting clamp 40 can easily attach the measuring instrument M to the first holding member 20 with the zero point P of the measuring instrument M aligned with the tip surface Fa of the flange F. Also, due to the double-force structure of the toggle clamp, the pressing force of the pressing unit 43 can be increased to firmly attach it. Therefore, it is possible to prevent the measuring unit Ma from being displaced from the mounting portion 23, and the length of the building member B can be accurately measured.

[0047] With the above configuration, the first holding member 20 and the second holding member 30 hold the side end portion of the flange F with the contact member 10 in contact with the tip surface Fa of the flange F. Therefore, even for a flange F with a brim break, the length from the tip surface Fa can be accurately measured. Also, with the mounting clamp 40, the measuring instrument M can be stably attached to the first holding member 20 with the zero point P of the measuring instrument M aligned with the tip surface Fa of the flange F. Therefore, the length of the building member B can be accurately measured. Furthermore, by simply attaching the measuring jig 1 to the building member B, the contact surface 11a of the contact portion 11 serving as a measurement reference can be easily aligned with the tip surface Fa of the flange F. In this way, by using the measuring jig 1, when measuring the length of the building member B, the measuring work can be carried out by one person. Also, without using any additional tools, the measuring unit Ma can be easily attached to the measuring jig 1 simply by fixing the measuring jig 1 to the flange F.

[0048] <Other Embodiments> As shown in FIG. 8, the measuring jig 1 can also be used when measuring the length of the building member B by a measuring instrument M that retractably stores the measuring unit M1a. Specifically, the measuring jig 1 is provided with a stepped portion 50 for attaching the measuring unit M1a of the measuring instrument M1. In this case, the stepped portion 50 corresponds to the attachment portion. The measuring jig 1 can attach the measuring unit M1a of the measuring instrument M1 to the first holding member 20 with the zero point P, which is the reference point of the measuring instrument M1, aligned with the tip surface Fa of the flange F by the stepped portion 50.

[0049] As shown in FIG. 8, the measuring instrument M1 is a tape measure (convex rule) that retractably stores the measuring unit M1a. Specifically, the measuring instrument M1 has a measuring unit M1a formed with measuring scales, a hook M1b provided at the tip of the measuring unit M1a, and a storage unit M1c for retractably storing the measuring unit M1a. A zero point P, which is a reference point for the length, is formed on the hook M1b. In other words, with the position where the hook M1b is hooked as the reference (as the zero point P), the distance from the tip surface Fa of the flange F can be directly measured.

[0050] As shown in FIG. 8, the stepped portion 50 is formed at a position corresponding to the tip surface Fa of the flange F between the first holding member 20 and the contact member 10. In other words, the stepped portion 50 is an attachment portion provided on the first holding member 20. The hook M1b provided at the tip of the measuring instrument M is hooked on the stepped portion 50. The stepped portion 50 attaches the measuring unit Ma to the first holding member 20 when the hook M1b, which is the zero point P, is hooked.

[0051] Further, the mounting clamp 40 may press the measurement unit M1a attached to the first holding member 20 by the step portion 50 from above. The measuring instrument M1 is more firmly attached to the first holding member 20 by the mounting clamp 40. In this way, any measuring instrument can be easily and accurately measured, and the measuring jig 1 with versatility can be obtained.

[0052] With the above configuration, the measuring instrument M can be stably attached to the first holding member 20 in a state where the zero point P of the measuring instrument M is aligned with the tip surface Fa of the flange F by the step portion 50. Therefore, the length of the building member B can be accurately measured. Further, by simply attaching the measuring jig 1 to the building member B, the contact surface 11a of the contact portion 11 serving as a measurement reference (the step portion 50 provided at the base end portion 23a of the mounting portion 23) can be easily aligned with the tip surface Fa of the flange F. Note that the tip surface Fa of the flange F and the zero point P serving as a measurement reference do not necessarily have to be arranged at the same position. Even in such a case, the distance from the tip surface Fa of the flange F can be calculated by correcting the distance by which the tip surface Fa and the latching claw M1b are displaced.

[0053] In the above embodiment, the measuring jig according to the present invention has been mainly described. However, the above embodiment is merely an example for facilitating the understanding of the present invention and does not limit the present invention. The present invention can be changed and improved without departing from the gist thereof, and it goes without saying that equivalents of the present invention are included therein. In particular, what has been described in the above embodiment is merely an example and does not limit the present invention.

Explanation of reference numerals

[0054] 1 Measuring jig 10 Contact member 10a One end portion (both end portions) 10b The other end portion (both end portions) 11 Contact portion 11a Contact surface 12 Upper wall portion 13 Reinforcing portion 13a First rib 13b Second rib 13c Third rib 14 Elongated hole 20 First holding member 21 Insertion portion 21a Insertion screw 21b Fixing nut 21c Cap 22 Moving portion 22a Upper end 23 Placing portion 23a Base end portion 23b Extended end portion 23c Placing surface 24 Clamping portion 25 Side wall portion 26 Extending portion 26a Screw hole 27 Screw portion 27a Fixing screw 27b Gripping portion 30 Second holding member 40 Mounting clamp (mounting portion) 41 Base portion 42 Rotating portion 43 Pressing portion 44 Operating portion 45 Link portion 50 Step portion (mounting portion) M, M1 Measuring instrument Ma, M1a Measuring portion M1b Hooking claw M1c Storage portion P Zero point (reference point) B Building member Ba Tip portion F Flange Fa Tip surface

Claims

1. A measuring jig used when measuring the length of a building member with a measuring instrument, attached to a flange provided at the tip of the building member, and for aligning a reference point of the measuring instrument with the tip surface of the flange. The measuring jig comprises: A contact member extending longitudinally in the width direction of the building member and contacting the tip surface of the flange; First and second holding members provided at both ends in the length direction of the contact member for holding the contact member in contact with the tip surface of the flange; An attachment portion provided on the first holding member for attaching a measuring portion of the measuring instrument to the first holding member in a state where the reference point of the measuring instrument is aligned with the tip surface of the flange.

2. The first holding member: Extends perpendicularly from the contact member toward the flange side and has a placement portion for placing the measuring portion; A clamping portion provided at an extended end of the placement portion for clamping the flange together with the contact member in the extending direction of the placement portion. The attachment portion is provided on the placement portion, and the measuring jig according to claim 1, wherein the measuring portion is detachably attached to the placement portion.

3. The clamping portion: An extending portion extending from the extended end of the placement portion; A screw portion screwed onto the extending portion and contacting the flange from the extending direction. The screw portion contacts the flange from the extending direction and clamps the flange together with the contact member. The measuring jig according to claim 2.

4. The first holding member is attached to the contact member such that the separation distance between the first holding member and the second holding member can be adjusted. The measuring jig according to claim 1 or 2.

5. On the contact surface of the contact member, a long hole elongated in the length direction is formed. The first holding member has an insertion portion inserted into the long hole, and a moving portion provided on the insertion portion and movably attached to the contact member in the length direction. The measuring jig according to claim 4, wherein the separation distance is adjusted by the moving portion moving along the long hole.

6. The mounting portion has a mounting clamp, and presses the measuring portion placed on the placement surface of the placement portion from a direction orthogonal to the placement surface. The measuring jig according to claim 2.

7. The measuring jig is used when measuring the length of the building member by the measuring instrument that retractably stores the measuring portion. The mounting portion has a stepped portion formed at a position corresponding to the front end surface of the flange between the first holding member and the contact member. A latching claw provided at the tip of the measuring instrument and serving as the reference point is latched on the stepped portion. The mounting portion attaches the measuring portion to the first holding member by the latching claw being latched on the stepped portion. The measuring jig according to claim 1 or 6.

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