Target support

Abstract

To provide a highly convenient target support jig.SOLUTION: A target support jig 1 is provided, comprising a base member 2 consisting of a first arm 21A and a second arm 21B that are coupled together to form a bent section 42, 52, a magnetic support part(s) provided at least on the first arm 21A, and a retroreflective part 31 provided on the bent section 42, 52 of the base member 2.SELECTED DRAWING: Figure 2

Description

Technical Field

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[0001] The present disclosure relates to a target support.

Background Art

[0002] At a construction site of a structure, after generally assembling column members such as steel columns (after erection), a re-erection work is performed to adjust the column members so as to be perpendicular to the horizontal plane. As a technique for measuring the position of a column member, for example, Patent Document 1 discloses a system for actually measuring a retroreflective member attached to a column by a surveying device. The inclination amount of the column is obtained based on the position of the retroreflective member measured by the surveying device.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Adhered objects such as columns, which are the attachment targets of the retroreflective member, are assumed to have various shapes and the like. However, if different supports are used for attaching the retroreflective member according to the shape and installation location of the adhered object, the management and installation work may become complicated.

[0005] In view of the above points, an object of the present disclosure is to provide a highly convenient target support.

Means for Solving the Problems

[0006] To achieve the above object, the target support according to the present disclosure includes a base member in which a first arm portion and a second arm portion are connected to form a bent portion, and a magnetic attachment support portion provided at least on the first arm portion. Targets can be placed ,of ,of and is provided with.

Effects of the Invention

[0007] According to this disclosure, a highly convenient target support device can be provided. [Brief explanation of the drawing]

[0008] [Figure 1] This figure shows an example of the use of the target support according to Embodiment 1 of this disclosure. [Figure 2] This is a perspective view of the target support according to Embodiment 1, taken from the front and below. [Figure 3] This is a perspective view of the target support according to Embodiment 1, taken from the rear upper side. [Figure 4] This is a plan view of the target support according to Embodiment 1, as seen from above. [Figure 5] This is a perspective view of the magnet support and release parts according to Embodiment 1. [Figure 6] Figure 1 is an enlarged schematic diagram of the target support attached to the object to be adhered to, viewed from direction Q. [Figure 7] This is a side view showing an example of the operation of the attachment / detachment part according to Embodiment 1. [Figure 8] This is a side view showing an example of the operation of the attachment / detachment part according to Embodiment 1. [Figure 9] This figure shows an example in which multiple target support devices according to Embodiment 1 are attached to an object. [Figure 10] This is a perspective view of the target support according to Embodiment 2 of the present disclosure, as seen from the front and below. [Figure 11] This is a perspective view of the target support of Embodiment 2, seen from the rear upper side. [Figure 12] This is a cross-sectional view taken along line XII-XII showing an example of the operation of the attachment / detachment part of Embodiment 2. [Figure 13] This is a schematic diagram of the confirmation mechanism related to the modified example 1. [Figure 14] This figure shows another example of use of the target support according to Modification 2. [Figure 15] This figure shows another example of use of the target support according to Modification 2. [Figure 16]It is a diagram showing another usage example of the target support tool according to Modification 2. [Figure 17] It is a diagram showing another usage example of the target support tool according to Modification 3. [Figure 18] It is a diagram schematically showing a usage example and a configuration of the target support tool according to Embodiment 3. [Figure 19] It is a diagram schematically showing a configuration of the target support tool according to Embodiment 4. [Figure 20] It is a diagram schematically showing a configuration of the target support tool according to Embodiment 5. [Figure 21] It is a diagram showing a usage example of the target support tool according to Embodiment 6. [Figure 22] It is a diagram showing an arm member of the target support tool according to Embodiment 6.

Mode for Carrying Out the Invention

[0009] (Embodiment 1) Hereinafter, Embodiment 1 of the present disclosure will be described based on the drawings. The target support tool 1 shown in FIG. 1 is a support tool capable of supporting a retroreflective portion 31 which is a measurement object (target) that can be used for measuring (or surveying) a spatial shape including a structure. The target support tool 1 can be attached to an adherent 101 such as a columnar body (for example, a steel frame) built in a building or a corner portion of an inner wall in an indoor space (for example, an outside corner portion or an inside corner portion), and can be used to obtain the position (spatial coordinates) of the structure by measuring with a surveying device 102 such as a total station.

[0010] The target support 1 shown in Figures 2 and 3 comprises a base member 2 to which a first arm portion 21A (21) and a second arm portion 21B (21) are connected to form a bent portion 22, and a retroreflective member 3 provided on the convex side of the bent portion 22 of the base member 2. The first arm portion 21A and the second arm portion 21B are connected in such a way that they can form a right angle at the bent portion 22, and the base member 2 is formed in a substantially L-shape overall in a plan view (see Figure 4). In the target support 1 of Embodiment 1 and the target support 1a to 1c in other examples described later, the first arm portion 21A and the second arm portion 21B (the same applies to the first arm portions 41A, 51A and the second arm portions 41B, 51B) are fixedly connected in a state that forms a right angle (in other words, a state that makes it possible to form a right angle).

[0011] The base member 2 includes a first base body 4 having a retroreflective member 3 and a second base body 5 having a magnet M2 (magnetic attachment support part). The first base body 4 can be detachably fixed to the second base body 5 by facing the convex side (outside corner side) of the bent portion 52(22) of the second base body 5 with the concave side (inside corner side) of the first base body 4. The first base body 4 can be detachably magnetically attached to the second base body 5, which is made of a magnetic material such as metal, by the magnet M1 (magnetic attachment support part) positioned on one side of the first arm portion 41A and the second arm portion 41B of the first base body 4 (in this embodiment, the inner surface 412 which is the inside corner side of the bent portion 42(22)).

[0012] The first base body 4 has a first arm portion 41A (41) and a second arm portion 41B (41) connected at a right angle at the bent portion 42, and is formed in a substantially L-shape overall. As shown in Figure 4, the first arm portion 41A and the second arm portion 41B of this embodiment are configured in a shape and arrangement that is symmetrical with respect to the axis of symmetry A passing through the bent portion 42. The first arm portion 41A and the second arm portion 41B are formed in a rectangular prism shape with a substantially square cross-section. The bent portion 42 has an inner inclined portion 421 and an outer inclined portion 422 on the convex outer surface 411. The inner inclined portion 421 is provided on the axis of symmetry A in a plan view (see Figure 4) and is formed in a flat surface shape inclined at 45 degrees with respect to the outer surfaces 411 of the first arm portion 41A and the second arm portion 41B. Furthermore, the outer inclined portion 422 is provided between the inner inclined portion 421 and the outer surface 411, and is formed as a flat surface with a C-chamfer at the boundary between the inner inclined portion 421 and the outer surface 411. The inner surface 412 of the first arm portion 41A and the inner surface 412 of the second arm portion 41B are also formed to be at a right angle.

[0013] The first base body 4 has a retroreflective section 31 positioned to protrude from the inner inclined section 421, and further outer inclined sections 422 are provided on both sides of the inner inclined section 421. This allows for a wide-angle solid angle range in which the retroreflective section 31 can be sighted by the surveying device 102, etc.

[0014] Furthermore, as shown in Figure 4, the tip end face 413 of the first arm 41A and the tip end face 413 of the second arm 41B form the same plane B. The tip end face 413 of the first arm 41A is formed at an acute angle, inclined at 45 degrees with respect to the outer surface 411 of the first arm 41A. Similarly, the tip end face 413 of the second arm 41B is also formed at an acute angle, inclined at 45 degrees with respect to the outer surface 411 of the second arm 41B. In other words, the tip end faces 413 and the longitudinal direction (extension direction) of the first arm 41A and the second arm 41B are formed at a 45-degree inclination. As shown in Figure 3, the first base body 4 has supported portions 43 including an annular member 431 on each of the upper surfaces 414 of the first arm 41A and the second arm 41B. The annular member 431 is rotatably attached to the upper surface 414. A suspension device (not shown), such as a carabiner or a string, can be inserted through the annular member 431. This prevents the first base body 4 or the target support 1 from falling.

[0015] The first base body 4 has a groove 423 on the concave side of the bent portion 42. The groove 423 extends in the vertical direction (i.e., in a direction perpendicular to the longitudinal direction of the first arm portion 41A and the second arm portion 41B) and has a concave arc-shaped inner surface as shown in the plan view of Figure 4. The groove 423 can function as a relief portion to prevent interference with the convex side of the bent portion 52 of the second base body 5 when the second base body 5 is placed on the inner surface 412 side of the first base body 4.

[0016] Furthermore, magnets M1 are positioned on the inner surface 412 side of the first arm 41A and the second arm 41B. The magnets M1 in this embodiment can be made of a magnetic material such as a neodymium magnet, and are embedded in the first arm 41A and the second arm 41B. In this way, the first base body 4 is configured to be detachable from the second base body 5 by magnetic force. The magnetically attached first base body 4 and second base body 5 can be easily separated, for example, by placing a finger or the like on the tip end surface 413 and manipulating the first base body 4 in a direction that separates it from the second base body 5.

[0017] The retroreflective member 3 has a retroreflective portion 31 and a support portion 32 connected to the retroreflective portion 31. The retroreflective portion 31 is, for example, a prism having retroreflective properties. The support portion 32 is formed in the shape of a long rod. The retroreflective portion 31 is located on the convex side of the bent portion 22(42) and is offset from the base member 2 on the angle bisector of the interior angle formed by the first arm portion 21A and the second arm portion 21B, which are coaxial with the axis of symmetry A.

[0018] The aforementioned inclined inner portion 421 has a support hole 44, which is a through hole that securely accommodates the support portion 32. The retroreflective member 3 is fixed to the first base body 4 by inserting the support portion 32 into the support hole 44 at a predetermined depth.

[0019] The second base body 5 has a first arm portion 51A (51) and a second arm portion 51B (51) connected at a right angle at the bent portion 52, and is formed as a substantially L-shaped plate overall. As shown in Figure 4, the first arm portion 51A and the second arm portion 51B in this embodiment are configured in a shape and arrangement that is symmetrical with respect to the axis of symmetry A. The second base body 5 is formed from plate members of substantially the same thickness, and the outer surfaces 511 of the first arm portion 51A and the second arm portion 51B are formed at a right angle to each other, and the inner surfaces 512 of the first arm portion 51A and the second arm portion 51B are also formed at a right angle to each other.

[0020] Furthermore, the edges of the tip end 513 of the first arm 51A and the tip end 513 of the second arm 51B are formed parallel to each other and are located on the same plane. In addition, the first arm 51A and the second arm 51B have a plurality of openings 514, which are through holes, at symmetrical positions with respect to the axis of symmetry A.

[0021] As shown in Figure 3, a detachable portion 53 is provided at the end of the first arm portion 51A and the second arm portion 51B. The detachable portion 53 includes a magnet support portion 54, a hole portion 55 that guides the magnet support portion 54, and a rotatable support portion 561 that rotatably supports the magnet support portion 54.

[0022] Rectangular recessed notches 56 are formed on both opposing edges in the width direction of the first arm portion 51A and the second arm portion 51B. The pivot support portion 561 extends from the inner edge corresponding to the bottom of the notch portion 56, bending in an L-shape toward the outer surface 511. The tips of the pivot support portions 561 at each attachment / detachment portion 53 are provided to be approximately parallel to each other.

[0023] Figure 5 is a perspective view of the magnet support portion 54 and the release portion 57. The magnet support portion 54 is formed in the shape of a long rectangular thick plate. The magnet support portion 54 includes a base portion 541 on which a bearing portion 541a is formed, and a main body portion 542 which is thicker than the base portion 541. The main body portion 542 has a long rectangular magnetic attachment surface 542a on one side, on which a magnet M2 is provided. In this embodiment, the magnet M2 is exposed and arranged so as to be flush with the magnetic attachment surface 542a, but it may also be arranged within the magnet support portion 54 offset by a predetermined distance on the opposite side from the magnetic attachment surface 542a. In the rotational state of the magnet support portion 54 with the magnetic attachment surface 542a located in the hole portion 55 (see also Figure 7), the magnet M2 is provided on at least the surface on the inner angle side of the bend (the surface on the inner surface 512 side) of the first arm portion 21A and the second arm portion 21B.

[0024] The main body 542 has tapered portions 543 on the outer periphery of the magnetic attachment surface 542a. The tapered portions 543 are arranged in a rectangular ring shape in a plan view as seen from the magnetic attachment surface 542a side. The tapered portions 543 also include tapered portions 543a formed in the width direction (direction of the rotation axis C) of the main body 542, and tapered portions 543b and 543c formed on the radial direction D side of the rotation support portion 561 perpendicular to the rotation axis C. The tapered portions 543a and 543b are provided in a C-shaped plane with approximately the same inclination angle. On the other hand, the tapered portion 543c on the base portion 541 side is inclined in a concave curved plane shape.

[0025] The magnet support portion 54 has protrusions 544 on both ends in the direction of the rotation axis C. The protrusions 544 also have a concave curved relief portion 544a and a restricting portion 544b on the outer (far side) radially D relative to the rotation axis C. The relief portion 544a is provided on the handle portion 571 side (rotation axis E side) of the release portion 57. The restricting portion 544b has a portion on the magnetic attachment surface 542a side that is positioned adjacent to the relief portion 544a and is formed to protrude toward the handle portion 571 at a position opposite to the magnetic attachment surface 542a of the main body portion 542.

[0026] The release section 57 is formed in a substantially U-shape and has a handle section 571 and support rods 572 extending in the same direction from both ends of the handle section 571. The release section 57 is configured to rotate around the pivot axis E by connecting the support rods 572 to the side surface of the main body section 542. The support rod 572 has a release projection 572a that protrudes in the shape of a semicircular plate at the end opposite to the handle section 571 with respect to the pivot axis E. The rotation of the release section 57 is restricted to a predetermined angular range by the contact between the release projection 572a and the restricting section 544b.

[0027] The hole 55 is an opening that penetrates the second base body 5 in a substantially rectangular shape in the thickness direction (see also Figure 3). The hole 55 is formed to conform to the shape of the outer circumference of the magnetic attachment surface 542a, which is provided to protrude from one side of the magnet support portion 54. The hole 55 contacts or slides against the tapered portion 543 of the magnet support portion 54 to guide the engagement and disengagement of the magnet support portion 54. The aforementioned rotating support portion 561 rotates and supports the magnet support portion 54 so that the magnetic attachment surface 542a, which is one side of the magnet support portion 54, is exposed through the hole 55 (see also Target support 1-1 in Figure 7).

[0028] Furthermore, the first arm 51A and the second arm 51B each have a support portion 515 formed in a substantially L-shape at their end. The support portion 515 has a substantially rectangular opening that penetrates in the direction of the plate thickness. The target support 1 can be easily prevented from falling by inserting a suspension support (not shown), such as a carabiner or a string, through the support portion 515.

[0029] Here, an example of the use of the target support 1 will be described. Figure 6 is an enlarged schematic view of the target support 1 attached to the object to be attached 101 in Figure 1, viewed from above in the downward direction (Q direction). The object to be attached 101 in this embodiment has an outer shape that is approximately square in cross-section. Since the object to be attached 101 has magnetic properties, the first arm portion 51A (21A) is attached to one outer surface 101a by magnetic force using a magnet M2 (see Figure 3) provided on the attachment portion 53, and the second arm portion 51B (21B) is also attached to the other outer surface 101a by magnetic force using a magnet M2 provided on the attachment portion 53.

[0030] As shown in the target support 1-1 of Figure 7, the magnetic attachment surface 542a and inner surface 512 of the target support 1, when magnetically attached to the object to be attached 101, are located on the same plane and are in surface contact with the outer surface 101a of the object to be attached 101. In this way, since the target support 1 is in surface contact with the outer surface 101a at least in part, it can be stably attached to the object to be attached 101.

[0031] Furthermore, even if looseness (for example, a dimensional deviation from the design value) occurs between the hole 55 and the insertion portion of the magnet support portion 54 (the protruding portion on which the magnetic attachment surface 542a is formed), when the magnet support portion 54 is inserted into the hole 55, the tapered portion 543 is in contact with the inner edge of the hole 55. Therefore, the inner edge of the hole 55 is in contact with and supported by the magnet support portion 54 which is magnetically fixed to the object to be attached 101, preventing the base member 2 (i.e., the entire target support 1) from falling off or shifting position. As a result, the retroreflective portion 31 fixed to the base member 2 is prevented from shifting position and is stably supported on the object to be attached 101.

[0032] Returning to Figure 6, since the object to be adhered 101 has an outer shape that is approximately square in cross-section, the distance X1 from the center O of the object to be adhered 101 to the outer surface 101a in one first direction (for example, the left-right direction in Figure 6) is the same as the distance Y1 to the outer surface 101a in the other second direction that is perpendicular to the first direction (for example, the up-down direction in Figure 6) (distance X1 = distance Y1).

[0033] On the other hand, the distance X2 in the first direction (left-right direction in Figure 6) between the retroreflective portion 31 of the target support 1 and the outer surface 101a (inner surface 512 of the second arm portion 51B) of the object to be attached 101 is predetermined as a design value and is known in advance. (For example, the user (worker) of the surveying device 102 can set the mounting position of the retroreflective portion 31). In addition, the distance Y2 in the second direction (up-down direction in Figure 6) between the retroreflective portion 31 and the outer surface 101a (inner surface 512 of the first arm portion 51A) of the object to be attached 101 is predetermined as a design value and is known in advance. Therefore, by measuring the position 311 (spatial coordinates) of the retroreflective part 31 using the surveying device 102 (see Figure 1), the position of the center O of the object 101 to which the retroreflective part 31 is attached can be determined as a coordinate in the first direction, offset by distances X1 and X2 from position 311, and as a coordinate in the second direction, offset by distances Y1 and Y2 from position 311. Note that the procedure for calculating the position of the center O is not limited to this.

[0034] When attaching the target support 1 to the object to be attached 101, first, the base member 2 is brought into contact with any corner 101b of the object to be attached 101. At this time, one first arm 21A is in approximate surface contact with one outer surface 101a, and the other second arm 21B is in approximate surface contact with the other outer surface 101a, so that the target support 1 is stably supported in a temporary positioning state.

[0035] Next, as shown in the target support 1-1 of Figure 7, the attachment / detachment part 53 is rotated around the pivot axis C, and a portion of the protruding part of the magnet support 54, including the magnetic attachment surface 542a, is inserted into the hole 55. At this time, the tapered portion 543 provided on the outer circumference of the magnetic attachment surface 542a of the magnet support 54 is guided by the inner edge of the hole 55. As a result, the attachment / detachment part 53 magnetically attaches to the object to be attached 101 via the hole 55 so that the target support 1 is attached to the tentatively determined mounting position, thereby stably supporting the target support 1. Therefore, the timing of aligning the target support 1 by abutting it against the object to be attached 101 (for example, a steel frame) and the timing of magnetically attaching it to the object to be attached 101 can be staggered, so that the retroreflective portion 31 can be attached to the intended precise position.

[0036] Next, an example of the operation of removing the attachment / detachment part 53 will be explained with reference to Figures 7 and 8. Figure 7 shows the target support 1-1 in a state where it is magnetically attached to the object to be attached 101. To remove the target support 1 from the object to be attached 101, first, as shown in target support 1-2, the handle part 571 of the release part 57 is grasped and rotated around the pivot axis E in the direction away from the object to be attached 101. Then, the release projection 572a of the release part 57 comes into contact with the contact part 55a (see also Figure 2), which is the outer peripheral edge surface of the hole part 55.

[0037] Furthermore, as shown in the target support 1-3 of Figure 8, when the handle portion 571 is operated in the direction away from the object to be attached 101, the magnet support portion 54 including the magnet M2 can be moved away from the object to be attached 101 against the magnetic force, with the contact portion between the release projection 572a and the contact portion 55a as the fulcrum, the handle portion 571 as the point of force application, and the pivot axis E as the point of application (the so-called principle of the second type of lever). In other words, the release part 57 has a pivot point (rotation axis E) that is rotatably supported with respect to the magnet support part 54, a point of force (handle part 571) formed on one side of the pivot point, and an actuation point (release projection 572a) formed on the other side of the pivot point that can press against the contacted part 55a, which is the opening edge of the hole part 55. The rotation axis E is pushed back by the reaction force that the release projection 572a receives from the contacted part 55a, thereby moving the magnet support part 54 away from the attached object 101.

[0038] When the handle portion 571 is pulled further away from the object to be attached 101, the magnet support portion 54 can rotate around the pivot axis C and move away from the object to be attached 101, as shown in the target support 1-4. In this way, the user can easily remove the target support 1 from the object to be attached 101 by using the release portion 57 to release the attachment / detachment portion 53 on the first arm portions 41A, 51A (21A) and the second arm portions 41B, 51B (51B).

[0039] Furthermore, the target support 1 of this embodiment is configured so that each surface of the inner surface 512, which is formed at a right angle to the outer surface 101a which is adjacent at a right angle, can come into contact with it.Therefore, as shown in Figure 9, multiple retroreflective parts 31 can be easily attached to predetermined corners 101b of the adherend 101, aligned in the vertical direction (axial direction) of the adherend 101, without requiring separate measurements.Since each retroreflective part 31 fixed to the same adherend 101 is parallel to the axis of the center O of the adherend 101, the inclination of the adherend 101 can be determined by measuring the coordinates of each retroreflective part 31.

[0040] (Embodiment 2) Next, Embodiment 2 will be described. Figure 10 is a perspective view of the target support 1a according to Embodiment 2, viewed from the front and lower side, and Figure 11 is a perspective view of the target support 1a, viewed from the rear and upper side. In the description of the target support 1a of Embodiment 2, components similar to those of the target support 1 will be given the same reference numerals, and their descriptions will be omitted or simplified.

[0041] The base member 2a of the target support 1a includes a second base body 5a instead of the second base body 5 of the target support 1 in Embodiment 1. The configuration of the first base body 4 is the same as that of the target support 1 in Embodiment 1.

[0042] The second base body 5a has a first arm portion 51Aa(51a) and a second arm portion 51Ba(51a) connected at a right angle at the bent portion 52, and is formed as a substantially L-shaped plate overall. Furthermore, the tip end portion 513 of the first arm portion 51Aa and the tip end portion 513 of the second arm portion 51Ba are also formed to be parallel and are therefore provided on the same plane. The first arm portion 51Aa and the second arm portion 51Ba have an elongated rectangular opening 516, which is a through hole, positioned symmetrically with respect to the axis of symmetry at the bent portion 52 (corresponding to the axis of symmetry A shown in Figure 4), and are arranged parallel to the second base body 5a.

[0043] At both ends of the first arm 51Aa and the second arm 51Ba, a detachable part 53a is provided instead of the detachable part 53 shown in Embodiment 1. The detachable part 53a has a magnet support part 58 and a guide part 517 that guides the magnet support part 58. The magnet support part 58 is formed in the shape of a long rectangular plate, and is positioned so that the longitudinal direction of the magnet support part 58 faces the width direction of the first arm 51Aa and the second arm 51Ba.

[0044] The magnet support portion 58 has a long rectangular magnetic attachment surface 58a on one side, on which a plurality of magnets M3 (magnetic attachment support portion) are provided. In this embodiment, the magnets M3 are arranged exposed so as to be in the same plane as the magnetic attachment surface 58a, but they may also be arranged within the magnet support portion 58 offset by a predetermined distance on the opposite side from the magnetic attachment surface 58a. The magnets M3 are provided on at least the surface on the inner bending angle side (the surface on the inner surface 512 side) of the first arm portion 21Aa (21a) and the second arm portion 21Ba (21a).

[0045] Furthermore, the magnet support portion 58 is housed within a guide portion 517 formed by bending a part of the arm portion 51a. The guide portion 517 has a first side wall 517a located on the bent portion 52 side relative to the magnet support portion 58, a second side wall 517b located on the opposite side from the magnetic attachment surface 58a, and a third side wall 517c located on one side in the width direction of the arm portion 51a. The first side wall 517a, the second side wall 517b, and the third side wall 517c have flat surfaces and are arranged to be substantially perpendicular to each other.

[0046] Furthermore, the attachment / detachment portion 53a is provided with a release portion 59. The release portion 59 has a short cylindrical knob 591 having a knurled portion around its outer circumference, and a connecting portion 592 that connects the knob 591 to the magnet support portion 58. The connecting portion 592 is slidably inserted through a through hole in the second side wall 517b. Therefore, the magnet support portion 58 is configured to be movable a predetermined distance in the direction of near and far from the second side wall 517b (in other words, in the direction of near and far from the object 101 when the target support 1a is attached to the object 101) (see also Figure 12). In addition, the first side wall 517a and the third side wall 517c are in close proximity to or sliding contact with the side surface of the magnet support portion 58, and can function as guide walls to prevent unintentional rotation of the magnet support portion 58.

[0047] Furthermore, a rectangular plate-shaped supported portion 518 protrudes from one side of the first side wall 517a. The supported portion 518 has a roughly rectangular opening that penetrates in the direction of the plate thickness. The target support 1a can be prevented from falling by inserting a suspension support (not shown), such as a carabiner or a string, through the supported portion 518.

[0048] Furthermore, the third side wall 517c has a rectangular plate-shaped flange portion 519 on the other side opposite to the supported portion 518. The flange portion 519 has a flat surface that is substantially flush with the inner surface 512 of the second base body 5a, and can stably support the target support 1a when it comes into contact with the object to be attached 101.

[0049] Here, an example of using the target support 1a will be explained with reference to Figure 12. Figure 12 is a cross-sectional view taken at the XII-XII position in Figure 11, showing the target support 1a-1 in contact with (or attached to) the object to be attached 101.

[0050] Since the object to be attached 101 has magnetic properties, the first arm portion 21Aa is magnetically attached to one outer surface 101a of the corner portion 101b of the object to be attached 101 by a magnet M3 provided on the attachment portion 53a, and the second arm portion 21Ba (not shown) is magnetically attached to the other outer surface 101a by a magnet M3 provided on the attachment portion 53a. The magnetic attachment surface 58a, inner surface 512, and flange portion 519 of the target support 1a magnetically attached to the object to be attached 101 can make surface contact with the outer surface 101a of the object to be attached 101 on the same plane. In this way, the target support 1a is also stably attached to the object to be attached 101 because at least a part of it makes surface contact with the outer surface 101a. Furthermore, the magnet support portion 58 magnetically attached to the object to be attached 101 is formed in a low-profile rectangular prism shape and has four flat outer peripheral surfaces. One outer peripheral side contacts the first side wall 517a, restricting the movement of the base member 2a relative to the adherend 101 (movement to the left in Figure 12), while the other outer peripheral side contacts the third side wall 517c, restricting the movement of the base member 2a relative to the adherend 101 (movement towards the front in Figure 12). As a result, the retroreflective portion 31 fixed to the base member 2a is prevented from shifting position and is stably supported on the adherend 101.

[0051] When attaching the target support 1a to the object to be attached 101, first, the base member 2a is brought into contact with any corner 101b where the object to be attached 101 is to be attached. At this time, one first arm 21Aa is in approximate surface contact with one outer surface 101a, and the other second arm 21Ba is in approximate surface contact with the other outer surface 101a, so that the target support 1 is stably supported in a temporary position. Next, as shown in the target support 1a-1 of Figure 12, the attachment / detachment part 53a is operated to bring it closer to the object to be attached 101, so that the magnet support part 58, including the magnetic attachment surface 58a, comes into contact with the outer surface 101a. As a result, the attachment / detachment part 53a magnetically attaches to the object to be attached 101 so that the target support 1a is attached to the temporarily determined planned attachment position, and the target support 1a can be stably supported. Therefore, the timing of when the target support 1a abuts against the object to be attached 101 (for example, a steel frame) to align its position and the timing of when it magnetically attaches to the object to be attached 101 can be staggered, allowing the retroreflective portion 31 to be attached to the intended precise position.

[0052] To remove the attachment portion 53a, the user can use the release portion 59 to release the attachment portion 53a from the first arm portions 41Aa, 51Aa(21Aa) and the second arm portions 41Ba, 51Ba(21Ba). In the target support 1a-1, where the magnet support portion 58 in Figure 12 is in contact with the object to be attached 101, the user grasps the knob 591 of the release portion 59 and moves the magnet support portion 58 away from the object to be attached 101 against the magnetic force. As a result, the magnet support portion 58 is easily removed from the object to be attached 101, as shown in the target support 1a-2. The movement of the magnet support portion 58 is restricted by the enlarged diameter portions located on both axial sides (upper and lower sides in Figure 12) of the connecting portion 592 contacting the opening edge of the through hole provided in the second side wall 517b. When the magnet support portion 58 is separated from the outer surface 101a, the target support 1a can be easily removed from the object to be attached 101.

[0053] Thus, in Embodiment 2, a detachable part 53a that can be easily attached to and detached from the object to be attached 101 by the magnet M3 can be easily constructed.

[0054] (Variation 1) Next, Modification 1 of the present disclosure will be described. Modification 1 describes a configuration in which a confirmation mechanism 6 that can be formed on the target support 1 (including the target support 1a) described above is provided. Figure 13 is a schematic diagram of the confirmation mechanism 6. The confirmation mechanism 6 is provided, for example, on the arm portion 51 of the second base body 5 (one or both of the first arm portion 51A and the second arm portion 51B), and is a mechanism that allows the user to easily confirm the attachment of the target support 1 to the object to be attached 101. The confirmation mechanism 6 is provided at a part that moves closer to or further away from the object to be attached 101 when the target support 1 is attached to or detached.

[0055] The confirmation mechanism 6 includes a housing portion 61, which is an opening that penetrates the second base body 5 in the thickness direction, and a movable member 62 that is housed within the housing portion 61 so as to be movable in the thickness direction of the second base body 5. The housing portion 61 includes a small diameter portion 611 located on the outer surface 511 side, and a counterbore portion 612 formed around the opening edge on one end of the small diameter portion 611 on the inner surface 512 side. The movable member 62 includes a columnar main body portion 621 housed within the small diameter portion 611, and a flange portion 622 formed on one side of the main body portion 621. Movement of the movable member 62 toward the outer surface 511 side is restricted by the flange portion 622 abutting against the bottom of the counterbore portion 612. On the other hand, movement of the movable member 62 toward the opposite side of the outer surface 511 side is restricted, for example, by a restricted portion (not shown) provided on the movable member 62 abutting against a restricting portion (not shown) provided on the housing portion 61 side. For example, the restricted portion can be a protrusion, and the restricting portion can be a groove that guides the range of movement of the protrusion.

[0056] Furthermore, the movable member 62 is biased toward the inner surface 512 by an elastic member such as a spring (not shown), and when the target support 1 is not attached to the object to be attached 101, it protrudes from the inner surface 512 by a predetermined amount (see movable member 62-1).

[0057] On the other hand, when the target support 1 is attached to the object to be attached 101 (i.e., when the inner surface 512 and the object to be attached 101 come into contact), the movable member 62 is pressed from the inner surface 512 side toward the housing 61 side and moves against the elastic force of the elastic member. The flange portion 622 of the movable member 62 that has moved toward the housing 61 side is housed in the counterbore portion 612 and does not protrude from the inner surface 512. When the movable member 62 moves toward the housing 61 side, the movable member 62 moves toward the outer surface 511 of the second base body 5 and is positioned so that the tip of the main body portion 621 is substantially flush with the outer surface 511. Therefore, the user can easily determine whether or not the target support 1 has been attached to the object to be attached 101 by visually inspecting the movable member 62 from the outer surface 511 side, or by palpating the housing 61 from the outer surface 511 side.

[0058] Thus, the confirmation mechanism 6 changes its state in accordance with the attachment and detachment of the base member 2 to the object 101, and is configured to allow the attachment and detachment status of the base member 2 to be confirmed by sight, touch, or both. Therefore, the user can easily confirm the attachment status of the target support 1. The confirmation mechanism 6 may be provided on the target support 1a or on any arm portion 41 of the first base body 4. In addition, one or more confirmation mechanisms 6 may be provided.

[0059] (Modification 2) Next, a second modification of the present disclosure will be described. The target support 1, 1a described in embodiments 1 and 2 above can also measure the position of the object to be attached 101 using the first base body 4 alone. Figure 14 shows a target support 1b which is composed of the first base body 4 without including the second base bodies 5, 5a in the base member 2. In the target support 1b, the lengths of the first arm portion 21A and the second arm portion 21B are shorter than in the target support 1 which includes the second base bodies 5, 5a. For example, if the radius of curvature of the corner portion 101b of the object to be attached 101 is relatively small, a wide contact area can be secured between the inner surface 412 and the outer surface 101a, so the target support 1b can be stably magnetically attached to the object to be attached 101 even without the second base bodies 5, 5a.

[0060] Furthermore, the distance X3 in the first direction (left-right direction in Figure 14) between the retroreflective portion 31 of the target support 1b and the outer surface 101a of the adherend 101 (inner surface 412 of the second arm portion 41B) is predetermined as a design value and is known in advance. Also, the distance Y3 in the second direction (up-down direction in Figure 14) between the retroreflective portion 31 and the outer surface 101a of the adherend 101 (inner surface 412 of the first arm portion 41A) is predetermined as a design value and is known in advance. Therefore, by measuring the position 311 (spatial coordinates) of the retroreflective part 31 with the surveying device 102, the position of the center O of the object to which the retroreflective part 31 is attached can be determined as an offset in the first direction by the sum of distances X1 and X3 from position 311, and as an offset in the second direction by the sum of distances Y1 and Y3 from position 311 (see Figure 6 for the positional relationship between the center O, distance X1, and distance Y1).

[0061] In the target support 1b shown in Figure 14, the first arm 41A and the second arm 41B can be easily separated from the object to be attached 101 by placing fingers on their respective end faces 413. Therefore, the end faces 413 also function as release points.

[0062] Furthermore, as shown in Figure 15, the target support 1b can also measure the position of the object to be attached 101 by attaching it to the outer surface 101a of the object to be attached 101 by bringing the end faces 413 of the first arm 41A and the second arm 41B into contact with the object to be attached 101. The target support 1b can be magnetically attached to the object to be attached 101 by the magnetic force of the magnet M1, with one end face 413 (one side) being the magnetic attachment surface where the magnet M1 is placed.

[0063] The distance R1 between the retroreflective portion 31 of the target support 1b and the same plane B where the tip end face 413 is located is predetermined as a design value. The distance between the center O of the object to be attached 101 (not shown in Figure 15) and the outer surface 101a (for example, distance X1 or distance Y1 in Figure 6) is also predetermined by the design information. The direction F from the retroreflective portion 31 to the center O of the object to be attached 101 can also be predetermined from the design information. Therefore, by measuring the position 311 (spatial coordinates) of the retroreflective portion 31 using the surveying device 102 (see Figure 1), the position of the center O of the object to which the retroreflective portion 31 is attached can be determined.

[0064] Figure 16 shows another example of the use of the target support 1b. In this figure, the object to be attached 101 is shown in a side view from the direction normal to the outer surface 101a. Two linear guide indicators G are drawn on the outer surface 101a so as to intersect (touch). In this figure, the guide indicators G are each formed in a straight line and are drawn in an L-shape where they intersect at a right angle.

[0065] The target support 1b is positioned such that, for example, the reference position 412a, which is a virtual intersection of the inner surface 412, coincides with the reference point g1 where the guide indicator G intersects. In the example shown in Figure 16, since the guide indicator G is formed in a right-angled straight line, the positions of the reference position 412a and the reference point g1 can be made to coincide by adjusting each guide indicator G so that it coincides with the inner surface 412 of the first base body 4 (base member 2b).

[0066] Because the target support 1b has a wide opening near the reference position 412a due to the groove 423, the position of the guide indicator G and the relative positional relationship between the target support 1b and the guide indicator G can be easily visually confirmed. Therefore, it can function as a relief section for the purpose of visualizing the intersection (corner 101b) where the guide indicator G is drawn on the object to be attached 101, and the positioning of the target support 1b relative to the object to be attached 101 can be easily reproduced and attached to the same position as the previous mounting position of the target support 1b (i.e., the relative position of the retroreflective part 31 relative to the object to be attached 101) by utilizing the guide indicator G.

[0067] Furthermore, the target support 1c-1 in Figure 16 is an example of a configuration in which the retroreflective portion 31 is positioned on the inside of the bent portion 42(22) and, in a plan view from the upper surface 414 side, the center position 311 coincides with the reference position 412a (virtual intersection point of the inner surface 412). The retroreflective portion 31 of the target support 1c-1 is formed, for example, in the shape of half a regular octahedron pyramid (in other words, a regular square pyramid), and is provided so as to be exposed on at least one side of the upper surface 414.

[0068] One example of how to attach the target support 1c-1 is to first bring the lower surface 415 (see also Figure 2) of the target support 1c-1 into contact with the outer surface 101a of the object to be attached 101, thereby attaching it to the object to be attached 101. At this time, by adjusting the two inner surfaces 412 of the guide indicator G to overlap with the straight section of the guide indicator G, the center position 311 of the retroreflective part 31 can be automatically aligned with the reference point g1. Therefore, the user can easily position the retroreflective part 31 provided on the target support 1c-1 while confirming that the center position 311 of the retroreflective part 31 and the guide indicator G overlap (in other words, that they overlap with the normal direction of the outer surface 101a of the reference point g1, and the position on the front side in Figure 16).

[0069] Furthermore, the guide indicator G only needs to determine the position of the reference point g1, and may be formed at an obtuse or acute angle, or the reference point g1 may be indicated by an inclined line or point. The guide indicator G may also be formed in a cross shape by intersecting each other. Since the retroreflective portion 31 is translucent enough to allow the reference point g1 formed on the outer surface 101a to be visible, the retroreflective portion 31 can be easily and accurately attached to the intended mounting position of the object to be attached 101, even if the target support 1c is mounted at an inclination with respect to the outer surface 101a.

[0070] (Variation 3) Next, a third modification of the present disclosure will be described. Figure 17 shows an example of use of the target support 1c according to the second modification. The target support 1c has a retroreflective portion 31 on the inner corner side (concave side or inside corner side) of the bent portion 42 of the L-shaped base member 2 (first base body 4). The retroreflective portion 3 is attached to the first base body 4 by engaging the support portion 32 with the support hole 44 (see Figure 4) of the first base body 4 from the inside. The target support 1c can be attached to inside corners of interior walls in indoor spaces or inside corners of building materials at construction sites, etc., as the adherend 101.

[0071] The distance X4 between the retroreflective portion 31 of the target support 1c and the outer surface 101a (outer surface 411 of the second arm portion 41B) of the object to be attached 101 in the first direction (left-right direction in Figure 17) is predetermined as a design value and is known. Similarly, the distance Y4 between the retroreflective portion 31 and the outer surface 101a (outer surface 411 of the first arm portion 41A) of the object to be attached 101 in the second direction (up-down direction in Figure 17) is predetermined as a design value and is known. Therefore, by measuring the position 311 (spatial coordinates) of the retroreflective portion 31 using the surveying device 102 (see Figure 1), the position of the corner portion 101e of the object to which the retroreflective portion 31 is attached can be determined.

[0072] Although the base member 2 of the target support 1c in Figure 17 was described as being composed of a first base body 4, it may also be configured to include a first base body 4 and second base bodies 5, 5a, similar to Embodiment 1 and Embodiment 2. In this case, the first base body 4 may be placed on the outer surface 511 side or on the inner surface 512 side of the second base bodies 5, 5a.

[0073] When the first base body 4 is positioned on the outer surface 511 side of the second base bodies 5, 5a, for example, the bent portion 52 of the second base bodies 5, 5a is provided with an opening that is coaxial with the support hole 44 (see Figure 4) of the first base body 4 and allows the support portion 32 of the retroreflective member 3 to be inserted and removed from the inside, thereby allowing the retroreflective portion 31 to be positioned on the inner angle side of the bend of the base member 2, which includes the first base body 4 and the second base bodies 5, 5a. The second base body 5 may be configured to be magnetically attached to the object to be attached 101 by a magnet M1 provided on the first base body 4, or the configuration of the attachment / detachment portions 53, 53a may be reversed on the outer surface 511 side and the inner surface 512 side, and the second base body 5, 5a may be configured to be magnetically attached to the object to be attached 101 by magnets M2, M3 provided on the second base bodies 5, 5a.

[0074] Furthermore, when the first base body 4 is positioned on the inner surface 512 side of the second base bodies 5, 5a, the configuration of the attachment / detachment parts 53, 53a may be reversed on the outer surface 511 side and the inner surface 512 side, so that the second base bodies 5, 5a can be magnetically attached to the object to be attached 101 by magnets M2, M3 provided on the second base bodies 5, 5a.

[0075] (Embodiment 3) Next, Embodiment 3 of the present disclosure will be described. Figure 18 is a schematic diagram of the target support 1d according to Embodiment 3. In the target support 1d of Embodiment 3, the first arm portion 21A and the second arm portion 21B of the base member 2 described in Embodiment 1, etc., are connected by a hinge portion 23, which is a rotatable bending portion provided in place of the bending portion 22, so that they can form a right angle. The first arm portion 21A and the second arm portion 21B can rotate by the hinge portion 23 within an angular range of 180 degrees, for example, from +90 degrees to -90 degrees. Therefore, the target support 1d can be used, for example, in the indoor space 103 of Figure 18, to measure the position of each corner, using the inner corner portion 101a1 or outer corner portion 101a2, which are corners of a wall surface formed at various angles, as the adherend 101.

[0076] Furthermore, the retroreflective portion 31 of the target support 1d is provided at the pivot axis center of the hinge portion 23. As an example of measuring the object to be attached 101 using the target support 1d, first, the positions of the retroreflective portions 31 attached to three or more corners (in the example in Figure 18, the outer corner 101a2 in section S and the inner corners 101a1 on both sides adjacent to the outer corner 101a2) are measured. Since the virtual straight line L connecting the three measured points is parallel to the outer surface 101a of the object to be attached 101, the angle between the virtual straight lines L on both sides of the inner measurement point (position 311 in the enlarged view of section S) can be determined as the angle of the outer corner 101a2. Furthermore, since the angle of the outer corner portion 101a2 coincides with the angles of the first arm portion 21A and the second arm portion 21B, and the distance R2 from the virtual straight line L of the first arm portion 21A and the second arm portion 21B passing through the retroreflective portion 31 to the inner surface 412 is known, the position of the outer corner portion 101a2 can be calculated as a position offset from the retroreflective portion 31.

[0077] Furthermore, the retroreflective portion 31 may be offset by a predetermined distance in the rotation axis direction of the hinge portion 23 (towards or towards the rear in Figure 18) to facilitate confirmation by the surveying device 102. In addition, although the target support 1d has been described as including the first base body 4, it may also be configured to include the first base body 4 and the second base bodies 5, 5a and be rotatable by the hinge portion 23.

[0078] (Embodiment 4) Next, Embodiment 4 of the present disclosure will be described. Figure 19 is a schematic diagram showing the configuration of the target support 1e according to Embodiment 4. In the following description of the target support 1e, components similar to those of the target support 1 described above will be denoted by the same reference numerals, and their descriptions will be omitted or simplified. Also, Figure 19 shows the configuration of the second base body 5e, and the illustration of the first base body 4 is omitted.

[0079] In the aforementioned target support 1, the pivot support portion 561 that supports the magnet support portion 54 was provided on the side of the bent portion 52. However, in the target support 1e of this embodiment, the pivot support portion 561 that supports the magnet support portion 54 is located on one side (the left side in Figure 19). That is, the pivot support portion 561 of one of the magnet support portions 54 corresponding to the first arm portion 51A is provided on the opposite side from the bent portion 52, and the pivot support portion 561 of the other magnet support portion 54 corresponding to the second arm portion 51B is provided on the side of the bent portion 52.

[0080] Furthermore, the target support 1e has a string-like link member 7 that connects the magnet support portion 54 of the first arm portion 51A and the magnet support portion 54 of the second arm portion 51B. The string-like link member 7 is formed from a long, flexible string-like body, such as a wire. The string-like link member 7 is connected to a connecting portion 545 provided on the rotating end side of each magnet support portion 54. The string-like link member 7 is also positioned via the convex (protruding) side of the bent portion 52.

[0081] The configuration of the target support 1e allows, for example, when one magnet support 54 on the second arm 51B is moved in the closing direction, the string-like link member 7 can move the other magnet support 54 on the first arm 51A in the closing direction (state of target support 1e-1). Similarly, when one magnet support 54 on the first arm 51A is moved in the opening direction, the string-like link member 7 can move the other magnet support 54 on the second arm 51B in the opening direction (state of target support 1e-2). Therefore, the target support 1e is configured so that the attachment and detachment operations of the magnet M2 (magnetic attachment support) provided on the first arm 51A and the magnet M2 (magnetic attachment support) provided on the second arm 52B are linked.

[0082] Furthermore, if a rotating support portion 561 is provided on the opposite side of each magnet support portion 54, the linked opening or closing movements can also be controlled in the opposite direction to that described above. In addition, the magnet support portion 54 is provided with a release portion (for example, a release portion 57) that rotates the magnet support portion 54 in the opening direction against the magnetic force of the magnet M2 (details are not shown).

[0083] As described above, in the target support 1e of Embodiment 4, the target support 1e can be magnetically attached by first bringing the second base body 5e into contact with the intended mounting position on the object to be attached 101 and then rotating the magnet support part 54. Therefore, the timing of aligning the target support 1e by abutting it against the object to be attached 101 and the timing of magnetically attaching it to the object to be attached 101 can be staggered, allowing the retroreflective part 31 to be attached to the intended precise position.

[0084] (Embodiment 5) Next, Embodiment 5 of the present disclosure will be described. Figure 20 is a schematic diagram showing the configuration of the target support 1f according to Embodiment 5. In the following description of the target support 1f, components similar to those of the target support 1 described above will be denoted by the same reference numerals, and their descriptions will be omitted or simplified. Also, Figure 20 shows the configuration of the second base body 5f, and the illustration of the first base body 4 is omitted.

[0085] The target support 1f has a long, rod-shaped link member 81 that is rotatably connected to the first arm portion 51A and the second arm portion 51B, respectively, and an operating part 82 that can press one end of each link member 81. The link members 81 are rotatably connected and supported by support portions 83 formed on the first arm portion 51A and the second arm portion 51B of the second base body 5f, respectively. The operating part 82 is positioned near the bending portion 52 and is configured to be movable in the near-far direction relative to the second base body 5f by a guide portion (not shown). In this embodiment, the operating part 82 is biased in the far-away direction relative to the second base body 5f by a biasing member (e.g., a coil spring) (not shown). The operating part 82 is connected (contacting) one end of the link member 81 (bending portion 52 side) at the portion on the second base body 5f side.

[0086] Furthermore, the other end of the link member 81 (opposite to the bent portion 52) engages with an engaging portion 546 (for example, a groove or recess) provided on the magnet support portion 54. The magnet support portion 54 moves in the opening or closing direction depending on the position of the link member 81 that engages with the engaging portion 546. The detailed configuration of the engaging portion 546 is omitted from the illustration.

[0087] With the configuration of the target support 1f, for example, when the operating part 82 is pressed toward the second base body 5f, one end of the link member 81 moves toward the bent part 52, causing the link member 81 to rotate. This allows the other end of the link member 81 to move the magnet support part 54 in the opening direction (state of target support 1f-1). When the pressing operation on the operating part 82 is released, the operating part 82 moves toward the second base body 5f due to the biasing member that biases the operating part 82. This releases the pressure on the link member 81, and each magnet support part 54 becomes rotatable in the closing direction. When the second base body 5f is in contact with the object to be attached 101, the magnet support part 54 rotates toward the closing direction due to the magnetic force of the magnet M2 acting toward the object to be attached 101 (state of target support 1f-2).

[0088] The operating section 82 may be configured to allow one end of each link member 81 to be operated by a pulling operation. Alternatively, the operating section 82 and each link member 81 may be configured such that one end of the link member 81 moves in a direction away from the second base body 5f as the operating section 82 moves. Furthermore, the target support 1f may be configured to connect the link member 81 and the operating section 82, and the link member 81 and the magnet support 54, by a hinge connection using a bearing and shaft center via an elongated hole or the like.

[0089] Furthermore, the configuration is not limited to the one described above. The operating unit 82 may be configured to be biased toward the second base body 5f by a biasing member (not shown). In this case, the magnet support unit 54 is moved in the opening direction by the link member 81 when no external force is applied (state of target support unit 1f-1), and the magnet support unit 54 can be moved toward the closed direction toward the attached object 101 by operating the operating unit 82 toward the second base body 5f (pressing operation or pulling operation).

[0090] Therefore, when the operating unit 82 moves the link member 81, the other end of the link member 81 moves the magnet support 54 in the opening or closing direction, thereby enabling the attachment and detachment of the magnet M2 (magnetic attachment support) provided on the first arm 51A and the magnet M2 (magnetic attachment support) provided on the second arm 51B to be synchronized.

[0091] As described above, in the target support 1f of Embodiment 5, the target support 1f can be magnetically attached by first bringing the second base body 5f into contact with the intended mounting position on the object to be attached 101 and then rotating the magnet support part 54. Therefore, the timing of aligning the target support 1f by abutting it against the object to be attached 101 and the timing of magnetically attaching it to the object to be attached 101 can be staggered, allowing the retroreflective part 31 to be attached to the intended and precise position.

[0092] (Embodiment 6) Next, Embodiment 6 of the present disclosure will be described. Figure 21 is a diagram showing an example of use of the target support 1g attached to the adherend 101 using the arm member 9. Figure 22 is a diagram showing the arm member 9 of the target support 1g according to Embodiment 6. In the following description of the target support 1g, components similar to those of the target support 1 described above will be denoted by the same reference numerals, and their descriptions will be omitted or simplified.

[0093] The target support 1g has arm members 9 (first arm member 9A and second arm member 9B), which are extension members (third base members) that relay and fix the first base member 4 to the object to be attached 101, instead of the second base member 5 of Embodiment 1. Therefore, the base member 2g is formed by the first base member 4 and the arm members 9 (third base member).

[0094] As shown in the plan view and front view of Figure 22, the arm member 9 is formed in the shape of a substantially rectangular flat plate and has a first flat surface 9a and a second flat surface 9b provided on the opposite side of the first flat surface 9a. The arm member 9 is made of a magnetic material. The first flat surface 9a and the second flat surface 9b are formed parallel to each other, and the distance R3 (plate thickness) between the first flat surface 9a and the second flat surface 9b is predetermined and known. The arm member 9 has a plurality of magnets M4 (magnetic attachment support parts) on one side of the second flat surface 9b. In addition, substantially U-shaped operating parts 91 are provided on both long edges of the arm member 9.

[0095] Returning to Figure 21, an example of using the target support 1g with the arm members 9 will be explained. First, the arm members 9 are attached to adjacent different outer surfaces 101a of the object to be attached 101 by the magnetic force of the magnet M4, with the outer surfaces 101a and the second flat surface 9b facing each other. Each arm member 9 is positioned at approximately a right angle. As a result, at the corner 101b, the surface parallel to the outer surface 101a of the object to be attached 101 is extended by the first flat surface 9a.

[0096] Subsequently, the first base body 4 is attached to the first flat surface 9a of the arm member 9 by the magnetic force of the magnet M1, with the first flat surface 9a and the inner surface 412 facing each other. Therefore, the arm member 9 located on the first arm portion 41A side of the first base body 4 functions as the first arm portion, the first arm member 9A, and the arm member 9 located on the second arm portion 41B side of the first base body 4 functions as the second arm portion, the second arm member 9B. The base member 2g is indirectly connected to the first arm portion 21A and the second arm portion 21B via the first base body 4 (i.e., unlike the base member 2 etc. which are directly connected integrally by the second base body 5), and forms a bent portion 21 on which the retroreflective portion 31 can be arranged.

[0097] In the configuration described in this embodiment, where separate arm members 9 are used for the first arm portion 21A and the second arm portion 21B, even if the arm member 9 is attached to the outer surface 101a of the object to be attached 101 at an angle, the angle does not affect the formation of an orthogonal surface by the first flat surface 9a at the corner portion 101b. Furthermore, depending on the radius of curvature of the corner portion 101b of the object to be attached 101, the first arm portion 41A and the second arm portion 41B of the first base body 4 may not be able to contact the outer surface 101a over a sufficient area. However, by using the arm member 9 as an extension member, the target support 1g (i.e., the retroreflective member 311) can be fixed in the intended position even at the corner portion 101b which has a large radius of curvature.

[0098] Furthermore, in this embodiment, the base member 2g of the target support 1g can be composed of a first base body 4 and a plurality of arm members 9, making the entire device compact.

[0099] The position of the center O of the adherend 101 can be determined as follows. In Figure 21, the distance X3 in the first direction (left-right direction in Figure 21) between the retroreflective portion 31 of the target support 1g and the inner surface 412 (first flat surface 9a) of the second arm portion 41B is known as a pre-defined design value. The distance Y3 in the second direction (up-down direction in Figure 21) between the retroreflective portion 31 and the outer surface 411 (first flat surface 9a) of the first arm portion 41A is also known as a pre-defined design value. Furthermore, the distance R3 between the first flat surface 9a and the second flat surface 9b, which is the plate thickness of the arm member 9, is also known. Therefore, by measuring the position 311 (spatial coordinates) of the retroreflective part 31 using the surveying device 102 (see Figure 1), the position of the center O of the object to be attached 101 can be determined as an offset in the first direction by the sum of distances X1, R3, and X3 from position 311, and an offset in the second direction by the sum of distances Y1, R3, and Y2 from position 311.

[0100] (Embodiment 7) Next, the target support of Embodiment 7 will be described. In the target support of Embodiment 7, instead of magnets M1 to M4 as magnetic support parts that can magnetically attach to the object to be attached 101 in Embodiments 1 to 6 or Modifications 1 to 3, electromagnets are used. The electromagnets can be configured such that their magnetic force is demagnetized when the power is turned on (current ON) and a magnetic force is generated when the power is turned off. When electromagnets are used instead of magnets M1 to M4, each component can be configured to include a power source such as a battery, a driver that controls the power supply to the electromagnet, and a receiver that receives control instructions for the driver.

[0101] As a result, the electromagnets (magnetic attachment support parts) provided on the first arm 21A (41A, 51A, 51Aa) and the electromagnets (magnetic attachment support parts) provided on the second arm 21B (41B, 51B, 51Ba) can be electrically controlled so that the attachment / detachment operation of one is linked to the attachment / detachment operation of the other.

[0102] Furthermore, if an electromagnet is used as the magnetic support part, the rotation mechanism of the magnet support part 45 can be omitted, simplifying the configuration of the target support device.

[0103] As described above, the target support devices 1, 1a to 1g according to this disclosure are configured to include a base member 2 in which a first arm portion 21A and a second arm portion 21B are connected to form a bent portion 22, a magnetic attachment support portion (magnets M1 to M4 or electromagnets) provided on at least the first arm portion 21A, and a retroreflective portion 31 provided on the bent portion 22 (hinge portion 23) of the base member 2. Furthermore, the configuration of target support devices 1, 1a to 1g, which include base members 2, 2a, 2g in which the first arm portion 21A and the second arm portion 21B are directly or indirectly connected to form a bent portion 21 on which the retroreflective portion 31 can be placed, and magnetic attachment support portions (magnets M1 to M4 or electromagnets) provided on the first arm portion 21A and the second arm portion 21B, has also been described. With this configuration, the retroreflective portion 31 is configured to be stably attached to and detached from any object 101 by the magnetic attachment support portion. Therefore, it is possible to construct highly convenient target support devices 1,1a to 1d.

[0104] This concludes the description of the embodiments of the present disclosure, but the embodiments of the present disclosure are not limited to these embodiments.

[0105] For example, in the description of this embodiment, the tip ends 513 of the first arm portion 51A and the second arm portion 51B of the second base body 5 may be formed flat on the same plane by bending them to incline the inner surface 512, or by forming a tip end surface with an area sufficient to stably contact the flat surface of the object to be attached 101.

[0106] Furthermore, although the target support members 1 and 1a of Embodiment 1 and Embodiment 2 were described as having a detachable configuration for the first base body 4 and the second base bodies 5 and 5a, the first base body 4 and the second base bodies 5 and 5a may be integrally formed.

[0107] Furthermore, in the modified example 1, the confirmation mechanism 6 may be configured such that when the target support 1 is attached to the object to be attached 101, the main body portion 621 of the movable member 62 protrudes from the outer surface 511, and when the target support 1 is removed from the object to be attached 101, the movable member 62 is positioned so as to be substantially flush with the outer surface 511, or it is retracted into the housing portion 61.

[0108] Furthermore, the confirmation mechanism 6 may include an output unit capable of detecting the attachment of the target support members 1,1a to 1d to the object 101 and providing an electrical output (e.g., light emission). In that case, the target support members 1,1a to 1d may include a power supply unit (e.g., a battery or solar panel).

[0109] Furthermore, although each embodiment has described a configuration in which magnets M1 to M3 are provided on the first arm portion 21A and the second arm portion 21B respectively, magnets M1 to M3 may also be provided on at least one of the first arm portion 21A and the second arm portion 21B (the one on which magnets M1 to M3 are provided may be defined as the first arm portion).

[0110] Furthermore, although the first arm 21A and the second arm 21B were described using different names for convenience, the target support devices 1,1a to 1d may be configured or named differently from the first arm 21A and the second arm 21B.

[0111] Furthermore, although the first arm portion 21A and the second arm portion 21B have been described as being formed in a substantially straight rod shape, they may also be configured to include a curved portion partially or entirely. That is, the first arm portion 21A and the second arm portion 21B may have other shapes that conform to the outer surface 101a of the body to be attached. For example, if the outer surface 101a of the body to be attached is a curved side surface of a cylinder, the inner surfaces of the first arm portion 21A and the second arm portion 21B can be configured to include an arc-shaped region.

[0112] Furthermore, in the target support devices 1, 1a, 1b, 1c, 1e, 1f, and 1g, the retroreflective portion 31 may have a measurement point position 311 at the intersection of the centerlines (virtual straight lines L) of the first arm portion 21A and the second arm portion 21B, as shown in the target support device 1d in Figure 17.

[0113] Furthermore, although a configuration in which the first base body 4 and the second base bodies 5, 5a can be attached and detached by magnet M1 has been described, they may also be configured to be detachable by other attachment and detachment structures such as screw fastening, interlocking, or engagement / detachment mechanisms using engaging claws.

[0114] Furthermore, the configurations shown in Embodiments 1 to 7 and Modifications 1 to 3 may all be applied by substituting or adding some of the configurations from other embodiments or modifications. [Explanation of symbols]

[0115] 1 (1-1, 1-2, 1-3, 1-4) Target support 1a (1a-1, 1a-2) Target support 1b Target support 1c (1c-1) Target support 1d Target support 1e (1e-1, 1e-2) Target support 1f(1f-1,1f-2) Target support 1g target support 2,2a,2g Base material 3 Retroreflective material 4. First base 5, 5a, 5e, 5f Second base 6. Verification mechanism 7. String-like link member 9 Arm members 9A First arm member 9B Second arm member 9a First flat surface 9b Second flat surface 21A,21Aa First arm 21B,21Ba Second arm 22 Bending section 23 Hinge part 31 Retroreflective part 32 Support part 41 Arm part 41A, 41Aa First arm part 41B, 41Ba Second arm part 42 Flexure part 43 Supported part 44 Support hole 51, 51a Arm part 51A, 51Aa First arm part 51B, 51Ba Second arm part 52 Flexure part 53, 53a Attachment / detachment part 54 Magnet support part 55 Hole part 55a Contact part 56 Notch part 57 Release part 58 Magnet support part 58a Magnetic attachment surface 59 Release part 61 Housing part 62(62 - 1, 62 - 2) Moving member 81 Link member 82 Operating part 83 Support part 91 Operating part 101 Adhered object 101a Outer surface 101a1 Inlet corner part 101a2 Outlet corner part 101b Corner part 101c Corner part 101d Corner part 102 Measuring device 103 Indoor space 311 Position 411 Outer surface 411a Reference position 412 Inner surface 412a Reference position 413 Tip - side end face 414 Upper surface 415 Lower surface 421 Inner inclined part 422 Outer inclined part 423 Groove part 431 Annular member 511 External surface 512 Inner surface 512a Reference position 513 Tip end 514 Opening 515 Supported part 516 Opening 517 Guide section 517a First side wall 517b Second side wall 517c Third side wall 518 Supported part 519 Tsuba (guard) 541 Base 541a Bearing section 542 Main body 542a Magnetic surface 542a Magnetic surface 543, 543a, 543b, 543c Tapered section 544 Protrusion 544a Escape Department 544b Regulatory Department 545 Connection part 546 Engaging part 561 Rotating support part 571 Handle section 572 Support rod 572a Release protrusion 591 Knob 592 Connection part 611 Small diameter section 612 Counterbore section 621 Main body 622 Flange section A axis of symmetry B plane C Rotary axis D radial direction E Rotary axis F direction L virtual line M1-M4 Magnets G guide line g1 reference point O center R1~R3 ​​Distance X1~X4 distance Distance between Y1 and Y4

Claims

1. A base member formed by connecting the first arm and the second arm to create a bendable section on which a target can be placed, It comprises at least a magnetic support portion provided on the first arm, At least in the first arm portion, A magnet support portion having the magnetic support portion on one side, A hole formed in accordance with the shape of the magnet support portion, A rotatable support portion that rotatably supports the magnet support portion such that one side of the magnet support portion is exposed from the hole, Having, Target support.

2. The target support device according to claim 1, wherein the magnet support portion has a tapered portion on the radial edge of the rotation axis of the rotation support portion that guides engagement with and disengagement of the hole.

3. Furthermore, the target support device according to claim 1 or 2, further comprising a release mechanism in at least the first arm that moves the magnetic support portion in a direction away from the hole portion.

4. The target support device according to claim 3, wherein the release portion comprises a pivot portion rotatably supported with respect to the magnet support portion, a force application portion formed on one side of the pivot portion, and an action point portion formed on the other side of the pivot portion and capable of pressing the opening edge of the hole portion.

5. A base member formed by connecting the first arm and the second arm to create a bendable section on which a target can be placed, It comprises at least a magnetic support portion provided on the first arm, The base member comprises a first base body on which the target can be placed and a second base body having the magnetic support portion. The first base body and the second base body are detachable. Target support.

6. Either one or both of the first base body and the second base body are provided with a magnetic support portion different from the magnetic support portion, and the first base body and the second base body are configured to be detachably attached by the magnetic support portion. The target support according to claim 5.

7. A base member formed by connecting the first arm and the second arm to create a bendable section on which a target can be placed, It comprises at least a magnetic support portion provided on the first arm, The base member changes its state in accordance with the attachment and detachment of the base member to the object to be attached, and has a confirmation mechanism that allows the attachment and detachment state of the base member to be confirmed by sight and / or touch. Target support.

8. The second base body is formed in a columnar shape. The target support according to claim 5.

9. A base member formed by connecting the first arm and the second arm to create a bendable section on which a target can be placed, It comprises at least a magnetic support portion provided on the first arm, At least in the first arm portion, A magnet support portion having the magnetic support portion on one side, The system includes a pivot support portion having a pivot axis in a direction intersecting the plane formed by the first arm portion and the second arm portion, and supporting the magnet support portion so as to be rotatable around the pivot axis, Target support.

10. A base member formed by connecting the first arm and the second arm to create a bendable section on which a target can be placed, It comprises at least a magnetic support portion provided on the first arm, At least in the first arm portion, A magnet support portion having the magnetic support portion on one side, It has a connecting part that is connected to the magnet support part and allows the magnet support part to move toward the one side, Target support.

11. A base member in which the first arm and the second arm are connected by a hinge to form a bendable section on which a target can be placed, It comprises at least a magnetic support portion provided on the first arm, The hinge portion connects the first arm portion and the second arm portion so that they can rotate relative to each other, and is configured to be set to an angle corresponding to the shape of the object to be measured. Target support.

12. A base member formed by connecting the first arm and the second arm via a base body to create a bendable section on which a target can be placed, At least a magnetic support portion provided on the first arm, The base body is provided with magnetic support parts for attaching it to the first arm and the second arm. Target support.

13. The magnetic support part is an electromagnet, Power supply and The system further comprises a driver that controls the supply of power from the power source to the electromagnet, A target support according to any one of claims 1, 5, 7, 9 to 12.

14. A base member formed by connecting the first arm and the second arm to create a bendable section on which a target can be placed, It comprises at least a magnetic support portion provided on the first arm, The base member has a groove on the concave side of the bent portion, and the target can be positioned on the convex side of the bent portion. The groove portion is formed in a shape that is concave in an arc shape when viewed from above. Target support.

15. The tip end face of the first arm and the tip end face of the second arm form the same plane. A target support according to any one of claims 1, 5, 7, 9 to 12, or 14.

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