Restraint material measuring tool

Abstract

This invention provides a restraint material measuring tool that can accurately measure the thickness of restraint materials without requiring specialized skills. [Solution] The restraint material measuring device measures the thickness from the back surface of the connecting surface portion 31b of the groove-shaped body 31 in the restraint material 3 to the surface of the hardened member 32. The device comprises a main body 51 having a first transverse extension portion 511 located on the back side of the connecting surface portion 31b, a second transverse extension portion 512 located on the surface side of the hardened member 32, and a thickness direction connecting member 513; a magnetic device 52 attached to the first transverse extension portion 511, which magnetically attaches a magnetic attraction plane portion 52a to the back surface of the connecting surface portion 31b, thereby magnetically fixing the main body 51 to the groove-shaped body 31; and a measuring unit 53 supported by the second transverse extension portion 2 and positioned opposite the magnetic device 51, which measures the thickness of the restraint material 3.

Description

Technical Field

[0001] This invention relates to a restraint material measuring tool for measuring the thickness of a restraint material that restrains the core material of a buckling restraint brace.

Background Art

[0002] For example, as shown in FIG. 7, the buckling restraint brace 1 includes a core material 2, a pair of restraint materials 3, and an unbonded material 4. The core material 2 has a steel plate-shaped body 21 and joint portions 22 located at both ends in the long side direction of the plate-shaped body 21 for joining with other members, and is fixed to the building frame by bolts passed through bolt insertion holes formed in the joint portions 22.

[0003] The restraint materials 3 are respectively located facing the weak axis surfaces perpendicular to the weak axis direction of the plate-shaped body 21 of the core material 2. The restraint material 3 includes a groove-shaped body 31 and a curing member 32.

[0004] The groove-shaped body 31 has a pair of opposing surfaces 31a and a connecting surface 31b connecting the opposing surfaces 31a, and an opening is located on the core material 2 side. One side of the opposing surface 31a in the groove-shaped body 31 is higher than the other side. And one groove-shaped body 31 is arranged such that the higher opposing surface 31a overlaps the outside of the lower opposing surface 31a in the other groove-shaped body 31. The groove-shaped body 31 is formed by bending a steel plate, and if this processing is not appropriate, surface distortion or the like will occur in the connecting surface 31b. The curing member 32 is poured into the groove-shaped body 31 with the opening facing upward and leveled with a trowel to be made flat, but if the finish is not appropriate, unevenness may occur.

[0005] In order to accurately restrain the buckling of the core material 2 of such a buckling restraint brace 1 during an earthquake, it is important to measure the thickness from the back surface of the connecting surface 31b of the groove-shaped body 31 in the restraint material 3 to the surface of the curing member 32 and to check whether the error dimension of this thickness is within the design error. The above thickness measurement is performed using a straight ruler or a bending ruler, and proficiency is required to accurately measure the above thickness.

[0006] Furthermore, Patent Document 1 proposes a measuring jig for a micrometer that measures the longitudinal dimensions of a long object by clamping the long object between an anvil and a spindle. [Prior art documents] [Patent Documents]

[0007] [Patent Document 1] Japanese Patent Publication No. 2011-89889 [Overview of the Initiative] [Problems that the invention aims to solve]

[0008] However, measuring the thickness of the restraint material 3 using the micrometer measuring jig described in Patent Document 1 is not easy because the person measuring must hold the measuring jig by hand throughout the measurement. Similarly, accurately measuring the thickness of the restraint material 3 using a large caliper is also not easy.

[0009] The objective of this invention is to provide a restraint material measuring tool that can accurately measure the thickness of a restraint material without requiring any special skills. [Means for solving the problem]

[0010] The restraint material measuring tool of this invention, in order to solve the above problems, comprises a steel groove-shaped body having opposing surfaces and a connecting surface connecting the opposing surfaces, with an opening between the opposing surfaces, and a hardened member filled and hardened inside the groove-shaped body, and is arranged with the hardened member facing a surface perpendicular to the weak axis direction of a plate-shaped core material, and measures the thickness from the back surface of the connecting surface of the groove-shaped body to the surface of the hardened member, A U-shaped main body comprising a first transverse extension located on the back side of the connecting surface, a second transverse extension located on the surface side of the hardened member, and a thickness-direction connecting member connecting the first transverse extension and the second transverse extension, A magnetic device is attached to the first lateral extension and magnetically attaches a magnetically adsorbent flat surface to the back surface of the connecting surface, thereby temporarily fixing the main body to the grooved body using magnetic force. Supported by the second transverse extension and positioned opposite the magnet device, the measuring unit measures the thickness of the restraint material by contacting the surface of the hardened member through movement in a direction perpendicular to the adsorption plane of the magnet device, or by emitting light in a direction perpendicular to the adsorption plane without contacting the surface, and measures optically. It is characterized by being equipped with [the following features].

[0011] With the above configuration, the main body, which consists of the first lateral extension, the second lateral extension, and the thickness-direction connecting member, can be temporarily magnetically fixed to the groove-shaped body by the magnetic device having the suction plane, eliminating the need to continuously hold the restraint material measuring tool by hand during thickness measurement. This makes it easy to measure the thickness of the restraint material without requiring any special skills. Furthermore, the measuring unit, positioned opposite the magnetic device, measures the thickness of the restraint material by contacting the surface through movement in a direction perpendicular to the suction plane, or by optically measuring it by emitting light in a direction perpendicular to the suction plane without contacting the surface, thus enabling accurate measurement of the thickness of the restraint material.

[0012] The above-mentioned magnetic device may include a switch for turning the magnetic attraction ON / OFF. This makes it easier to fix the main body to the grooved body using the magnetic device and to detach it from the grooved body.

[0013] The above-described magnetic device may include a first switching operation unit for turning the magnetic attraction to the grooved body ON / OFF, and a second switching operation unit for turning the magnetic attraction to the first lateral extension made of ferromagnetic metal ON / OFF. This makes it easier to fix the main body to the grooved body and to detach it from the grooved body using the magnetic device, and also makes it possible to magnetically fix the magnetic device to the first lateral extension and to detach the magnetic device from the first lateral extension.

[0014] The measuring unit is supported on the second transverse extension so as to be movable in the direction of extension of the second transverse extension and parallel to the adsorption plane of the magnet device, and the magnet device may be supported on the first transverse extension so as to be movable in the direction of extension of the first transverse extension and parallel to the direction in which the measuring unit is movable. With this, the thickness of multiple locations in the width direction of the restraint material can be measured without particularly changing the position of the main body of the restraint material measuring tool relative to the restraint material.

[0015] The first lateral extension may be provided with a first scale indicating the distance the magnet device moves from a predetermined reference position, and the second lateral extension may be provided with a second scale indicating the distance the measuring unit moves from a predetermined reference position. This makes it easy to determine whether the measuring unit is positioned appropriately opposite the magnet device from the values ​​read by the first and second scales.

[0016] The length of the thickness-direction connecting member in the main body may be adjustable. This allows for adjustment of the length of the thickness-direction connecting member when the thickness of the restraint material to be measured or the height of the opposing surfaces in the groove-shaped body differ significantly.

[0017] An elastic support portion that elastically supports the back surface of the connecting surface portion may be provided at a position spaced apart from the magnet device on the first horizontally extending portion. According to this, the mounting stability of the restraint material measuring tool with respect to the groove-shaped body can be enhanced more than when the magnet device contacts the groove-shaped body alone.

[0018] The elastic support portion may include a magnet that magnetically adsorbs to the back surface of the connecting surface portion. According to this, it is possible to prevent the elastic support portion from separating from the back surface of the connecting surface portion in the groove-shaped body, and further enhance the mounting stability of the restraint material measuring tool with respect to the groove-shaped body.

Advantages of the Invention

[0019] According to the present invention, various effects such as being able to measure the thickness of the restraint material without requiring skill can be achieved.

Brief Description of the Drawings

[0020] [Figure 1] It is an explanatory diagram showing a restraint material measuring tool of an embodiment and its usage form. [Figure 2] FIG. (A) of this figure is a front view showing a modified example of the restraint material measuring tool of the embodiment, and FIG. (B) of this figure is a side view. [Figure 3] FIG. (A) of this figure is a front view of the main body portion of the restraint material measuring tool shown in FIG. 2, FIG. (B) of this figure is a front view of the measurement moving portion of the restraint material measuring tool, and FIG. (C) of this figure is a perspective view of the measurement moving portion of the restraint material measuring tool. [Figure 4] It is a front view showing a modified example of the restraint material measuring tool of the embodiment. [Figure 5] It is a front view showing another modified example of the restraint material measuring tool of the embodiment. [Figure 6] FIG. (A) and FIG. (B) of this figure are front views showing a restraint material measuring tool of an embodiment of a type in which the length of the thickness direction connecting member can be adjusted. [Figure 7] It is an exploded view showing a buckling restraint brace including a restraint material that is a measurement target of the restraint material measuring tool of the embodiment as a component. [Modes for carrying out the invention]

[0021] Embodiments of this invention will now be described based on the attached drawings. As shown in Figures 1 and 7, the restraint material measuring tool 5 of the embodiment measures the thickness of the restraint material 3 of the buckling restraint brace 1. The restraint material 3 has a grooved body 31 and a hardened member 32 that is filled and hardened inside the grooved body 31, and the hardened member 32 is positioned facing the surface of the plate-shaped core material 2 perpendicular to the weak axis direction. The grooved body 31 has opposing surface portions 31a, 31a and connecting surface portions 31b that connect the opposing surface portions 31a, 31a, and is a steel member with an opening between the opposing surface portions 31a, 31a. The thickness of the restraint material 3 is the distance from the back surface of the connecting surface portion 31b of the grooved body 31 to the surface of the hardened member 32.

[0022] The restraint material measuring tool 5 of this embodiment comprises a U-shaped main body 51 made of steel plate, a magnet device 52, and a measuring unit 53.

[0023] The main body portion 51 includes a first lateral extension portion 511 located on the back side (below the restraint member 3) of the connecting surface portion 31b, a second lateral extension portion 512 located on the surface side (above the restraint member 3) of the hardened member 32, and a thickness-direction connecting member 513 connecting the first lateral extension portion 511 and the second lateral extension portion 512. The first lateral extension portion 511 also has a horizontal plate portion 511a made of steel plate (ferromagnetic material) on its upper side (the side closer to the connecting surface portion 31b).

[0024] The magnet device 52 is fixed on the horizontal plate portion 511a of the first lateral extension portion 511. The magnet device 52 temporarily fixes the main body portion 51 to the groove-shaped body 31 by magnetically attaching the magnetic attraction surface portion 52a to the back surface of the connecting surface portion 31b. The magnetic attraction surface portion 52a is positioned horizontally with respect to the horizontal plate portion 511a. The magnet device 52 also includes a switching operation unit 521 for turning the magnetic attraction ON / OFF. The switching operation unit 521 of the magnet device 52 turns the magnetic attraction ON / OFF using a permanent magnet, but it may also use an electromagnet and turn the power supply to the electromagnet ON / OFF.

[0025] The measuring unit 53 is supported by the second transverse extension 512. The measuring unit 53 is positioned opposite the magnet device 52, and in this opposing position, the distance from the suction plane 52a, which is the thickness of the restraint material 3, to the surface of the hardened member 32 is measured by bringing the contact element 531 into contact with the surface by moving the magnet device 52 in a direction perpendicular to the suction plane 52a. The measuring unit 53 has a guide slot 53a in a direction perpendicular to the suction plane 52a of the magnet device 52, and two guide protrusions 5121 that protrude from the second transverse extension 512 and are spaced apart in the direction perpendicular are engaged with this guide slot 53a. The measuring unit 53 has a numerical scale, and by reading the numerical value on, for example, the upper edge line of the second transverse extension 512 while the contact element 531 is in contact with the surface of the hardened member 32, the distance from the suction plane 52a to the surface of the hardened member 32 (thickness of the restraint material 3) can be measured.

[0026] With the above configuration, the main body 51, consisting of the first lateral extension 511, the second lateral extension 512, and the thickness direction connecting member 513, can be temporarily fixed to the grooved body 31 by magnetic force using the magnetic device 52. This eliminates the need to continuously hold the restraint material measuring tool 5 by hand while measuring the thickness. As a result, it becomes easy to measure the thickness from the back surface of the connecting surface 31b of the grooved body 31 to the surface of the hardened member 32 in the restraint material 3 without requiring any special skills. Furthermore, the measuring unit 53, while positioned opposite the magnetic device 52, measures the distance from the adsorption plane 52a to the surface of the hardened member 32 by contacting the surface through movement in a direction perpendicular to the adsorption plane 52a, thereby enabling accurate measurement of the thickness in the restraint material 3. In other words, the magnetic device 52 temporarily fixes the main body 51 to the grooved body 31 in the restraining material 3 using magnetic force, and the thickness can be measured by the measuring unit 53 at the position of the magnetic device 52. This makes it possible to improve both the ease of measuring the thickness and the accuracy of the measurement.

[0027] The measurement of the thickness of the restraint material 3 is performed, for example, with both ends of the restraint material 3 placed horizontally on a stand (not shown). Also, as shown in Figure 1, for example, after measuring the thickness from the back surface of the connecting surface 31b of the groove-shaped body 31 on the restraint material 3 to the surface of the hardened member 32 at a position close to the opposing surface 31a on the higher side, the switching operation unit 521 is turned OFF and the restraint material measuring tool 5 is moved to a position away from the opposing surface 31a on the higher side. Then, the switching operation unit 521 is turned ON and the thickness is measured again at this moved position, thereby measuring the thickness at multiple locations in the width direction of the restraint material 3. Furthermore, by shifting the restraint material measuring tool 5 in the longitudinal direction of the restraint material 3 and repeating the above thickness measurement, it becomes possible to measure the thickness of substantially the entire restraint material 3.

[0028] The area of ​​the suction surface 52a depends on the magnetic force of the magnet device 52, but it is best to set it to the area over which the restraint material measuring tool 5 is stably fixed when magnetically attached to the connecting surface 31b of the grooved body 31. On the other hand, if the surface of the suction surface 52a is too large, it may pick up unevenness or distortion on the back surface of the connecting surface 31b, which may lead to inaccurate thickness measurement. Therefore, it is best to determine the area of ​​the suction surface 52a while considering these factors. The shape of the suction surface 52a may be circular or rectangular.

[0029] Figures 2(A) and 2(B) show a modified example of the restraint material measuring tool 5, namely the restraint material measuring tool 5A. The measuring section 53 of this restraint material measuring tool 5A is supported on the second transverse extension 512 so as to be movable in the direction of extension of the second transverse extension 512 and in a direction parallel to the suction plane portion 52a of the magnet device 52A in the restraint material measuring tool 5A (a direction parallel to the horizontal plate portion 511a). In this example, as also shown in Figure 3(A), a guide slot 512a is formed in the second transverse extension 512 in a direction parallel to the suction plane portion 52a, and the measuring movable section 54 is supported in this guide slot 512a so as to be slidable.

[0030] As shown in Figures 3(B) and 3(C), the measuring movement unit 54 has two horizontal guide protrusions 541, which are engaged with the guide slots 512a. The two horizontal guide protrusions 541 are spaced apart in a direction parallel to the adsorption plane portion 52a of the magnet device 52A (parallel to the horizontal plate portion 511a). The measuring movement unit 54 also has two vertical guide protrusions 542, which are engaged with the guide slots 53a of the measuring unit 53. The lines connecting the two horizontal guide protrusions 541 and the lines connecting the two vertical guide protrusions 542 are perpendicular to each other.

[0031] The magnetic device 52A of the restraint material measuring instrument 5A is supported on the horizontal plate portion 511a of the first lateral extension portion 511 so as to be movable in the extension direction of the first lateral extension portion 511 and parallel to the sliding movement direction of the measuring movement portion 54. The magnetic device 52A includes a first switching operation unit 52c for turning the magnetic attraction to the grooved body 31 ON / OFF, and a second switching operation unit 52d for turning the magnetic attraction to the horizontal plate portion 511a made of steel plate (ferromagnetic metal) ON / OFF.

[0032] Furthermore, the first lateral extension 511 or the horizontal plate portion 511a is provided with a first scale portion S1 indicating the distance traveled by the magnet device 52A from a predetermined reference position O1, and the second lateral extension 512 is provided with a second scale portion S2 indicating the distance traveled by the measuring portion 53 from a predetermined reference position O2. The reading position of the first scale portion S1 is, for example, the edge position on the side of the measuring movement portion 54 closest to the thickness direction connecting member 513, and the reading position of the second scale portion S2 is, for example, the edge position on the side of the magnet device 52A closest to the thickness direction connecting member 513. The first scale portion S1 is engraved in a position that is readable (easy to read) with the restraining material 3 in place.

[0033] With the above-described restraint material measuring tool 5A, the thickness of multiple locations in the width direction of the restraint material 3 can be measured by moving the measuring movement unit 54 without particularly changing the position of the main body 51 of the restraint material measuring tool 5A relative to the restraint material 3. At this time, it is necessary to fix the main body 51 to the groove-shaped body 31 with the magnetic device 52A and to detach it from the groove-shaped body 31, and to magnetically fix the magnetic device 52A to the horizontal plate portion 511a of the first lateral extension portion 511 and to detach the magnetic device 52A from the horizontal plate portion 511a, but these operations can be easily performed by operating the first switching operation unit 52c and the second switching operation unit 52d.

[0034] If a first scale section S1 indicating the travel distance of the magnet device 52A and a second scale section S2 indicating the travel distance of the measuring unit 53 are provided, it is easy to determine from the values ​​read by the first scale section S1 and the second scale section S2 whether or not the measuring unit 53 is positioned appropriately opposite the magnet device 52A.

[0035] It is also possible to use magnet device 52 instead of magnet device 52A. In the configuration using magnet device 52, it is desirable to form a guide hole in the horizontal plate portion 511a to guide the magnet device 52 in the extension direction of the first lateral extension portion 511, and to form a projection on the lower surface side of the magnet device 52 that engages with the guide hole. Furthermore, it is desirable that the projection has a contact portion that contacts the back side of the horizontal plate portion 511a so that the magnet device 52 can slide on the horizontal plate portion 511a without rattling. Such guide holes and projections are also useful in the configuration using magnet device 52A.

[0036] Figure 4 shows another example of the restraint material measuring device 5A. This restraint material measuring device 5A includes an elastic support portion 514 that elastically supports the back surface of the connecting surface portion 31b at a position spaced apart from the magnet device 52A on the first transverse extension portion 511. In this example, the elastic support portion 514 is equipped with a magnet 514a that is magnetically attracted to the back surface of the connecting surface portion 31b.

[0037] As described above, by providing the elastic support portion 514, the mounting stability of the restraint material measuring tool 5A to the grooved body 31 can be improved compared to when the magnet device 52A is in contact with the grooved body 31 alone. Furthermore, if the elastic support portion 514 is equipped with a magnet 514a, it is possible to further improve the mounting stability of the restraint material measuring tool 5A to the grooved body 31 by preventing the elastic support portion 514 from separating from the back surface of the connecting surface portion 31b of the grooved body 31. Note that, depending on the weight of the restraint material measuring tool 5A, if the elastic force of the elastic support portion 514 is too weak, the mounting stability will decrease, while if the elastic force is too strong, the mounting stability will improve, but the mounting stability will be more susceptible to the effects of unevenness and distortion on the back surface of the connecting surface portion 31b where the elastic support portion 514 is located, which may lead to inaccurate thickness measurement.

[0038] Figure 5 shows another example of the restraint material measuring device 5A. This restraint material measuring device 5A includes a measuring unit 53A that measures optically by emitting light (laser light) in a direction perpendicular to the adsorption plane portion 52a of the magnet device 52A without contacting the surface of the hardened member 32. The measuring unit 53A includes a display unit 533 that digitally displays the measurement results.

[0039] Figures 6(A) and 6(B) show a modified example of the restraint material measuring tool 5, namely the restraint material measuring tool 5B. The restraint material measuring tool 5B has substantially the same structure as the restraint material measuring tool 5A, but the main body portion 51 is equipped with a thickness-direction connecting member 513A whose length can be adjusted. The thickness-direction connecting member 513A has a first portion 513a and a second portion 513b that are slidable relative to each other in the height direction (thickness direction). Even if the restraint material measuring tool 5B is used positioned closer to the higher opposing surface portion 31a, the second lateral extension portion 512 can be positioned beyond this higher opposing surface portion 31a. In other words, the restraint material measuring tool 5B can measure the thickness of the restraint material 3 whether accessed from the higher opposing surface portion 31a side or the lower opposing surface portion 31a side.

[0040] In the structure shown in Figure 6(A), pin insertion holes 513c are formed in the first part 513a and the second part 513b, respectively. After length adjustment, a pin is inserted into the matching pin insertion hole 513c to fix the height of the thickness-direction connecting member 513A. Depending on the position in which the pin is inserted, a predetermined distance is added to or subtracted from the value measured by the measuring unit 53. Alternatively, one of the pin insertion holes 513c in the first part 513a and the second part 513b may be a screw hole, and a bolt may be screwed in instead of a pin.

[0041] In the structure shown in Figure 6(B), a guide slot 513d is formed in one of the first portion 513a and the second portion 513b in a direction perpendicular to the adsorption plane portion 52a of the magnet device 52. Two guide protrusions 513e, which protrude from the other portion of the first portion 513a and the second portion 513b and are spaced apart in the aforementioned perpendicular direction, engage with this guide slot 513d. After length adjustment, the height of the thickness-direction connecting member 513A is fixed by fixing means (clip, adjustment groove engagement, etc.) not shown.

[0042] Although embodiments of this invention have been described above with reference to the drawings, this invention is not limited to the illustrated embodiments. Various modifications and variations can be made to the illustrated embodiments within the same scope as this invention, or within the equivalent scope. [Explanation of Symbols]

[0043] 1: Buckling-restrained brace 2: Core material 3:Restraint material 4: Unbonded material 5: Restraint material measuring tool 5A: Restraint material measuring tool 5B: Restraint material measuring tool 21: Plate-like body 22: Joint 31: Groove-shaped body 31a: Opposing surface part 31b: Connecting surface part 32: Hardened member 51: Main body 52: Magnetic device 52A: Magnetic device 52a: Adsorption plane part 52c: First switching operation unit 52d: Second switching operation unit 53: Measurement Unit 53A: Measurement section 53a: Guide slot 54: Measurement and movement unit 511: 1st horizontal extension part 511a: Horizontal plate part 512: 2nd horizontal extension part 512a: Guide slot 513: Thickness-direction connecting member 513A: Thickness-direction connecting member 513a: Part 1 513b: 2nd part 513c: Pin insertion hole 513d: Guide hole 513e: Guide projection 514: Elastic support part 514a: Magnet 521: Switching operation unit 531: Contactor 533:Display section 541: Horizontal guide projection 542: Vertical guide projection 5121: Guide projection O1: Reference position O2 :Reference position S1: First scale division S2: Second scale section

Claims

1. A restraint material measuring tool for measuring the thickness from the back surface of the connecting surface of the groove to the surface of the hardened member in a restraint material comprising a steel groove-shaped body having opposing surfaces and a connecting surface connecting the opposing surfaces, with an opening between the opposing surfaces, and a hardened member filled and hardened inside the groove-shaped body, wherein the hardened member is positioned facing a surface perpendicular to the weak axis direction of a plate-shaped core material, the tool measures the thickness from the back surface of the connecting surface of the groove-shaped body to the surface of the hardened member, A U-shaped main body comprising a first transverse extension located on the back side of the connecting surface, a second transverse extension located on the surface side of the hardened member, and a thickness-direction connecting member connecting the first transverse extension and the second transverse extension, A magnetic device is attached to the first lateral extension and magnetically attaches a magnetically adsorbent flat surface to the back surface of the connecting surface, thereby temporarily fixing the main body to the grooved body using magnetic force. Supported by the second transverse extension and positioned opposite the magnet device, the measuring unit measures the thickness of the restraint material by contacting the surface of the hardened member through movement in a direction perpendicular to the adsorption plane of the magnet device, or by optically measuring the thickness by emitting light in a direction perpendicular to the adsorption plane without contacting the surface. A restraint material measuring device characterized by being equipped with the following features.

2. The restraint material measuring device according to claim 1, wherein the magnetic device is equipped with a switching operation unit for turning the magnetic attraction ON / OFF.

3. The restraint material measuring tool according to claim 1, wherein the magnetic device comprises a first switching operation unit for turning the magnetic attraction to the groove-shaped body ON / OFF, and a second switching operation unit for turning the magnetic attraction to the first lateral extension made of ferromagnetic metal ON / OFF.

4. A restraint material measuring tool according to any one of claims 1 to 3, wherein the measuring portion is supported on the second transverse extension portion so as to be movable in the extension direction of the second transverse extension portion and parallel to the adsorption plane portion of the magnet device, and the magnet device is supported on the first transverse extension portion so as to be movable in the extension direction of the first transverse extension portion and parallel to the movable direction of the measuring portion.

5. A restraint material measuring device according to claim 4, characterized in that the first lateral extension portion is provided with a first scale portion indicating the distance traveled by the magnet device from a predetermined reference position, and the second lateral extension portion is provided with a second scale portion indicating the distance traveled by the measuring portion from a predetermined reference position.

6. A restraint material measuring tool according to claim 1, characterized in that the length of the thickness-direction connecting member in the main body is adjustable.

7. A restraint material measuring device according to claim 1, characterized in that an elastic support portion is provided on the first lateral extension portion at a position spaced apart from the magnet device, which elastically supports the back surface of the connecting surface portion.

8. The restraint material measuring tool according to claim 7, characterized in that the elastic support portion is provided with a magnet that is magnetically attracted to the back surface of the connecting surface portion.

Images