JP2012122559A - Anchor member, method for checking obstacle and method for mounting anchor member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an anchor member, a method for checking an obstacle and a method for mounting an anchor member, by which the presence or absence of an obstacle in a back face side of a panel can be easily checked and the anchor member can be freely drawn from a through hole.SOLUTION: The anchor member 1 is configured in such a manner that one end of an operation cord 7 is coupled to an end in a front side of a locking part 3 when the locking part 3 is laid in a position along a shaft 2, thereby, even when the locking part 3 is once rotated to be perpendicular to the shaft 2, the locking part 3 can be again aligned to the shaft 2 by pulling the other end of the operation cord 7 in a top face 13 side of a panel P, and the anchor member 1 can be freely drawn from a through hole 12. By using the anchor member 1 that can be freely drawn and by using the locking part 3, the presence or absence of an obstacle 18 in a periphery of the through hole 12 in the back face 11 side of the panel P can be checked for each through hole12. Thereby, the presence or absence of an obstacle 18 in the back face 11 side of the panel P can be easily checked.

Description

  The present invention relates to an anchor member for fixing an object to be fixed such as a gantry or a column base to a panel constituting a roof or a wall of a building, an obstacle checking method, and an anchor member mounting method.

  Conventionally, as described in Patent Documents 1 and 2 below, as a technology in such a field, a shaft portion and a locking portion attached to a tip portion of the shaft portion are provided, and the locking portion is attached to the shaft portion. Anchor members that are rotatable with respect to each other are known. The locking portion lies along the shaft portion when passing the shaft portion through a hole provided in the panel, and rises under the bias of a spring or the like when passing through the hole. As a result, the locking portion can be engaged with the back surface of the panel. On the other hand, on the surface side of the panel, a nut or the like is fastened to the shaft portion, and as a result, the fixed object is fixed.

  According to such an anchor member, the object to be fixed can be fixed to the panel only by work on the surface side of the panel. For example, even in the roof of an existing building, the object to be fixed can be fixed without removing the ceiling in the room. Installation work is possible.

Japanese Utility Model Publication No. 3-14573 JP 2005-61490 A

  However, since the anchor member described in the above-mentioned patent document is constructed only by the work on the front side of the panel, even if obstacles such as cables and pipes are laid on the back side of the panel, visual observation through the through hole It can only be confirmed and it is difficult to confirm their existence. For this reason, the anchor member may be attached in a state where the locking portion interferes with the cable or the pipe. In this case, the fixed state of the fixed object may become unstable, or the cable or the pipe may be broken. Moreover, even if the presence of an obstacle can be confirmed during the operation, once the locking part rises on the back side of the panel, it becomes difficult to pull out the anchor member from the through hole, and the anchor member is moved to another place. It becomes impossible to reuse it with the through-hole in.

  Therefore, the present invention provides an anchor member that can easily confirm the presence or absence of an obstacle on the back side of the panel and that can be pulled out freely from the through hole, an obstacle confirmation method, and an anchor member attachment method. With the goal.

  An anchor member according to the present invention is an anchor member for fixing an object to be fixed to a panel using a through-hole formed in the panel, and includes a shaft portion inserted into the through-hole and a tip of the shaft portion. A locking part that is attached to the part and is rotatable between a position intersecting the shaft part and a position along the shaft part, and a front side of the locking part when the locking part is in a position along the shaft part And an operation string having one end coupled thereto.

  According to the anchor member of the present invention, the shaft portion and the locking portion are inserted into the through hole in a state where the locking portion is along the shaft portion. And if the latching | locking part which advanced to the back surface side of the panel rotates so that a shaft part may cross | intersect, a latching | locking part can be engaged with the back surface side of a panel. Here, one end of the operating string is coupled to the front side of the locking portion when the locking portion is located along the shaft portion, so that the locking portion temporarily rotates so as to cross the shaft portion. Even if the other end of the operation cord is pulled on the surface side of the panel, the locking portion can be realigned with the shaft portion. Therefore, the anchor member can be freely pulled out from the through hole. In addition, when such an anchor member that can be pulled out freely is used, it is possible to check the presence or absence of an obstacle around the through hole on the back surface side of the panel by using the locking portion. Therefore, the presence or absence of an obstacle on the back side of the panel can be easily confirmed.

  The present invention also provides an obstacle confirmation method for confirming the presence or absence of an obstacle on the back side of a panel using a through hole formed in the panel, the shaft portion inserted into the through hole, and a shaft A locking part that is attached to the tip of the part and is rotatable between a position intersecting the shaft part and a position along the shaft part, and a locking part when the locking part is in a position along the shaft part Using a confirmation member with one end coupled to the front side of the cable, the locking part is along the shaft and the other end of the operation string is kept on the surface side of the panel. An insertion step for inserting the shaft portion and the locking portion into the hole, a rotation step for rotating the shaft portion within the through hole in a state where the locking portion advanced to the back side of the panel intersects the shaft portion, and an operation string Pulling the other end of the shaft along the shaft, pulling the shaft and the lock from the through hole , Characterized in that it comprises a.

  According to the obstacle checking method according to the present invention, in the inserting step, the shaft portion and the locking portion are inserted into the through hole in the state where the locking portion of the confirmation member is along the shaft portion, and in the rotating step, The shaft portion is rotated in the through hole in a state where the locking portion that has advanced to the back side of the panel intersects the shaft portion. Here, since the locking portion rotates together with the rotation of the shaft portion, the presence or absence of an obstacle around the through hole on the back side of the panel can be confirmed using the locking portion. After confirming the presence or absence of an obstacle, in the pulling step, the other end of the operating string is pulled on the surface side of the panel, the locking portion is brought along the shaft portion, and the shaft portion and the locking portion are pulled out from the through hole. Therefore, the presence or absence of an obstacle on the back side of the panel can be easily confirmed, and the confirmation member can be freely pulled out from the through hole.

  The present invention also provides an anchor member mounting method for fixing an object to be fixed to a panel using a through-hole formed in the panel, the shaft portion being inserted into the through-hole, and the shaft portion A locking portion that is attached to the distal end and is rotatable between a position intersecting the shaft portion and a position along the shaft portion, and before the locking portion when the locking portion is positioned along the shaft portion An anchor member having one end coupled to the side and an anchor member provided along the shaft portion and the other end of the operation string staying on the surface side of the panel while the locking portion is placed along the shaft portion. In the state where the insertion step for inserting the part and the locking part and the locking part that has advanced to the back side of the panel intersect the shaft part, the shaft part is rotated in the through hole, and the obstacle on the back side of the panel is not obstructed. A determination step for determining the presence or absence of an interference area, and the determination step determines that there is an obstacle non-interference area. If the object to be fixed is fixed by attaching a fastening member to the shaft portion protruding to the surface side of the panel, and it is determined that there is no obstacle non-interference area in the determination step, the other end of the operation cord is By pulling, the locking portion is brought along the shaft portion, and the shaft portion and the locking portion are pulled out from the through hole.

  According to the anchor member mounting method according to the present invention, in the inserting step, the shaft portion and the locking portion are inserted into the through hole in a state where the locking portion of the confirmation member is along the shaft portion. In a state where the locking portion that has advanced to the back surface side of the panel intersects the shaft portion, the shaft portion is rotated in the through hole, and the presence / absence of an obstacle non-interference area on the back surface side of the panel is determined. Here, the obstacle non-interference area is an area on the back side of the panel where the engaging portion can be engaged without interfering with the obstacle. When it is determined in the determination step that there is an obstacle non-interference area, a fastening member is attached to the shaft portion protruding to the surface side of the panel and the fixed object is fixed. Also, when it is determined in the determination step that there is no obstacle non-interference area, the other end of the operation cord is pulled on the surface side of the panel so that the locking portion extends along the shaft portion, and the shaft portion and the locking portion pass through. Pull out from the hole. Thus, the presence or absence of an obstacle on the back side of the panel can be easily confirmed, and the anchor member can be appropriately attached or pulled out depending on the presence or absence of an obstacle non-interference area.

  According to the present invention, the presence or absence of an obstacle on the back side of the panel can be easily confirmed, and the anchor member or confirmation member can be freely pulled out from the through hole.

It is a front view of the anchor member concerning a 1st embodiment of the present invention. It is sectional drawing which shows the fixation structure of the to-be-fixed object by the anchor member of FIG. It is a flowchart which shows the attachment method of the anchor member of FIG. It is sectional drawing which shows the drilling step of the through-hole in the flowchart of FIG. It is sectional drawing which shows the insertion step of the anchor member in the flowchart of FIG. It is sectional drawing which shows the rotation step of the anchor member in the flowchart of FIG. It is sectional drawing which shows the extraction step of the anchor member in the flowchart of FIG. (A) And (b) is a front view of the anchor member concerning other embodiments of the present invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the description of the drawings, the same elements are denoted by the same reference numerals, and redundant descriptions are omitted.

[Anchor member and fixing structure of fixed object using the same]
FIG. 1 is a front view of an anchor member according to the first embodiment, and FIG. 2 is a cross-sectional view showing a fixing structure of an object to be fixed by the anchor member of FIG. As shown in FIG.1 and FIG.2, the anchor member 1 is a member for fixing to-be-fixed objects 10, such as a mount and a column base, to the panel P which comprises the roof, wall, etc. of a building. Here, the case where the panel P is a lightweight cellular concrete plate (ALC plate; Autoclaived Light-weight Concrete panel) constituting the roof or the roof is shown. The anchor member 1 fixes the fixed object 10 to the surface side (upper surface side in FIG. 2) of the panel P using the through-hole 12 drilled in the panel P.

  The anchor member 1 includes a shaft portion 2 that is inserted into the through hole 12, and a locking portion 3 that is attached to the distal end portion 2 a of the shaft portion 2 and is rotatable with respect to the shaft portion 2. The shaft portion 2 and the locking portion 3 are made of, for example, iron or stainless steel. The proximal end side of the shaft portion 2 opposite to the distal end portion 2a has a cylindrical shape, and a male screw portion 2b is formed on the outer periphery thereof. The distal end portion 2a has a flat plate shape, and the rotation center portion 3b of the locking portion 3 is rotatably attached via a connecting pin 4 serving as a rotation center axis so as to sandwich the distal end portion 2a. . On both sides of the rotation center portion 3b, main body portions 3a extending to substantially the same length are formed. The main body 3 a has a U-shape in which a cross section perpendicular to the extending direction is opened to the side facing the shaft 2. A plate-like panel abutting portion 3c that abuts against the back surface 11 of the panel P when the anchor member 1 is attached to the panel P is connected to the end side extending in the extending direction of the main body portion 3a.

  The locking portion 3 is positioned substantially perpendicular to the shaft portion 2 (position indicated by a solid line in FIG. 1), and is positioned along the shaft portion 2 so as to be substantially straight with the shaft portion 2 (imaginary line in FIG. 1). The position can be rotated with respect to the position indicated by. That is, the locking part 3 rotates within a range of about 90 degrees with respect to the shaft part 2. A torsion spring (not shown) is provided between the shaft portion 2 and the locking portion 3 so as to wind the connecting pin 4. By this torsion spring, the locking portion 3 is urged in the arrow A direction so as to rotate to a position substantially orthogonal to the shaft portion 2. When the locking portion 3 rotates in this way, when the shaft portion 2 is inserted into the through-hole 12, the locking portion 3 is moved along the shaft portion 2 into the through-hole 12. In addition to enabling entry, when the tip 2a protrudes toward the back surface 11 of the panel P, the locking portion 3 rotates to allow the panel contact portion 3c to engage with the back surface 11.

  As shown in FIG. 2, in the fixing structure C of the fixed object 10, the shaft portion 2 passes through the through hole 12 of the panel P and the hole 10 a of the fixed object 10, and the locking portion 3 is connected to the shaft portion 2. On the other hand, the nut 5 is fastened to the male screw portion 2b in a state where it abuts against the back surface 11 of the panel P at a position substantially orthogonal to the panel P. As a result, the panel P and the fixed object 10 placed on the surface 13 of the panel P are sandwiched between the locking portion 3 and the nut 5, and as a result, the fixed object 10 is fixed to the panel P. A washer 6 and the like are provided between the nut 5 and the fixed object 10.

  Here, in the anchor member 1 of the present embodiment, the front side of the locking portion 3 when the locking portion 3 is located along the shaft portion 2 (the base end with respect to the insertion direction into the through hole 12) The operation string 7 made of a wire is coupled to the end of the side. More specifically, a projecting piece 3d is provided at an end of the main body 3a that rotates in a region on the base end side (male screw 2b side) of the shaft portion 2, and the projecting piece 3d is provided with the projecting piece 3d. One end of the operation string 7 is joined. The operation string 7 is longer than the entire anchor member 1, and the other end can be extended to the surface side (the upper surface side in FIG. 2) of the fixed object 10 in the state of FIG. 2 where the fixed object 10 is fixed. Length. At the other end of the operation string 7, a knob portion 8 that is picked by the operator's finger is provided. In the fixing structure C of the fixed object 10, the operation string 7 is exposed to the surface 13 side of the panel P through the through hole 12 and the hole 10a.

  In the anchor member 1, the operation string 7 is pulled by the operator, so that the locking portion 3 is directed toward the position along the shaft portion 2 against the urging force of the torsion spring provided in the connection pin 4 portion. It is rotated in the direction of arrow B. In the state where the locking portion 3 is substantially aligned with the shaft portion 2, the front side of the main body portion 3 a covers the shaft portion 2.

[Confirmation method of obstacle and mounting method of anchor member]
The anchor member 1 having the above configuration also functions as a confirmation member for confirming the presence or absence of an obstacle on the back surface 11 of the panel P using the through hole 12 of the panel P. That is, the anchor member 1 can be used only as a confirmation member, and can also be used as a confirmation member and a fixing member for the fixed object 10. Hereinafter, the attachment method of the anchor member 1 which also serves as the confirmation method of the obstacle in the roof of the existing building is demonstrated.

  FIG. 3 is a flowchart showing a method of attaching the anchor member 1. First, a layer covering the roof panel P such as a prevention sheet or a heat insulating material is cut with a cutter knife or the like to reveal the surface 13 of the roof panel P. Next, the through-hole 12 is drilled in the panel P (S1). Here, as shown in FIG. 4, a stopper 17 is attached to the blade 16 a of the drill 16, thereby preventing the blade 16 a from protruding from the back surface 11 of the panel P and possibly existing on the back surface 11 side of the panel P. This prevents the obstacles 18 such as cables and pipes that are damaged from being directly damaged by the blade 16a.

  Next, the anchor member 1 is inserted into the through hole 12 (S2). Here, as shown in FIG. 5, an operation of pulling the knob portion 8 to apply tension to the operation string 7 is performed, the locking portion 3 is moved along the shaft portion 2, and the shaft portion 2 and the locking portion are kept in this state. The part 3 is inserted into the through hole 12. At this time, the knob 8 remains on the surface 13 side of the panel P. This step S2 corresponds to an insertion step.

  Next, when the locking portion 3 is completely pulled out to the back surface 11 side of the panel P and advances into the space on the back surface 11 side, the force pulling the knob portion 8 is loosened, and the tension applied to the operation string 7 is weakened. Accordingly, the locking portion 3 is rotated by receiving the urging force of the torsion spring and stops at a position substantially orthogonal to the shaft portion 2.

  Then, as shown in FIG. 6, the shaft portion 2 is rotated in the through hole 12, and at the same time, the locking portion 3 is rotated around the through hole 12 on the back surface 11 side of the panel P (S3). During this rotation, in order to detect an obstacle 18 that may be present on the back surface 11 side of the panel P, the panel contact portion 3c of the locking portion 3 is kept in contact with the back surface 11 of the panel P. Is preferred.

  Next, the presence or absence of the obstacle 18 on the back surface 11 side of the panel P is determined (S4). Here, for example, if the locking portion 3 can be smoothly rotated in step S3, it is determined that there is no obstacle 18, and on the other hand, the locking portion 3 interferes with something and the rotation stops or becomes jerky. Or the like, it is determined that there is an obstacle 18. These steps S3 and S4 correspond to a rotation step and a determination step.

  When it is determined that there is no obstacle 18 in step S4, the positions of the through hole 12 and the hole 10a of the fixed object 10 are aligned, and the nut 5 is used without considering the direction (rotation position) of the locking portion 3 in particular. The fixed object 10 is fixed (S5). In this way, the attachment of the anchor member 1 is completed, and the fixing structure C shown in FIG. 2 is completed.

  On the other hand, as shown in FIG. 6, when it is determined that there is an obstacle 18 because the locking portion 3 interferes with the obstacle 18, the locking portion 3 is engaged without interfering with the obstacle 18. It is determined whether or not there is an area on the back surface 11 side of the panel P, that is, an obstacle non-interference area (S6). Here, as in step S3, the shaft portion 2 is rotated in the through hole 12, and at the same time, the locking portion 3 is rotated again on the back surface 11 side of the panel P. During this rotation, every time the panel contact portion 3 c of the locking portion 3 interferes with the obstacle 18, the panel contact portion 3 c is slightly lifted from the back surface 11 (pushing the shaft portion 2), and is caught on the obstacle 18. It is preferable to rotate the locking portion 3 while avoiding it.

  If it is determined in step S6 that there is an obstacle non-interference area, the positions of the through hole 12 and the hole 10a of the fixed object 10 are aligned, and the locking portion 3 is oriented in the direction (rotational position) within the obstacle non-interference area. The object to be fixed 10 is fixed by the nut 5 while being stationary (S7). In this way, the attachment of the anchor member 1 is completed, and the fixing structure C shown in FIG. 2 is completed.

  On the other hand, if it is determined that there is no obstacle non-interference area because the interference with the obstacle 18 cannot be avoided by the rotation of the locking part 3 in any direction, the shaft part 2 is moved to a predetermined length as shown in FIG. Then, the knob 8 held on the surface 13 side is pulled to apply tension to the operation string 7, and the locking portion 3 is moved along the shaft portion 2. And the latching | locking part 3 is extracted from the through-hole 12 (S8). This step S8 corresponds to a drawing step. When the anchor member 1 is pulled out in this way, a through hole 12 is drilled at another location of the panel P, and the above procedure is repeated with a new through hole 12.

  According to the anchor member 1 of the present embodiment described above, one end of the operation string 7 is coupled to the front end of the locking portion 3 when the locking portion 3 is located along the shaft portion 2. Therefore, even if the locking portion 3 is rotated once so as to be orthogonal to the shaft portion 2, the locking portion 3 is again moved to the shaft portion by pulling the other end of the operation string 7 on the surface 13 side of the panel P. 2 along. Therefore, the anchor member 1 can be freely pulled out from the through hole 12. In addition, the anchor member 1 that can be pulled out freely as described above is used, and the presence or absence of the obstacle 18 around the through hole 12 on the back surface 11 side of the panel P is confirmed for each through hole 12 using the locking portion 3. You can also. Therefore, the presence or absence of the obstacle 18 on the back surface 11 side of the panel P can be easily confirmed.

  Moreover, according to the confirmation method of the obstacle 18 of this embodiment, since the latching | locking part 3 is rotated together with rotation of the axial part 2, using the latching | locking part 3, the back surface 11 side of the panel P is used. The presence or absence of the obstacle 18 around the through hole 12 can be confirmed. After confirming the presence or absence of the obstacle 18, in step S8, the other end of the operating string 7 is pulled on the surface 13 side of the panel P so that the locking portion 3 is along the shaft portion 2, and the shaft portion 2 and the locking portion 3 are placed. Is pulled out from the through hole 12, the presence or absence of the obstacle 18 on the back surface 11 side of the panel P can be easily confirmed, and the anchor member 1 can be freely pulled out from the through hole 12.

  Moreover, according to the anchor member attachment method of the present embodiment, the shaft portion 2 is passed through the through hole in the state where the locking portion 3 that has advanced to the back surface 11 side of the panel P intersects the shaft portion 2 in steps S3 and S4. 12, the presence or absence of an obstacle non-interference area on the back surface 11 side of the panel P is determined. When it is determined in step S4 that there is an obstacle non-interference area, the nut 10 is fastened to the male screw portion 2b protruding to the surface 13 side of the panel P to fix the object 10 to be fixed. If it is determined in step S4 that there is no obstacle non-interference area, the other end of the operating cord 7 is pulled on the surface 13 side of the panel P so that the locking portion 3 is along the shaft portion 2, and the shaft portion 2 and the engagement portion are engaged. The stop 3 is pulled out from the through hole 12. In this way, the presence or absence of the obstacle 18 on the back surface 11 side of the panel P can be easily confirmed, and the anchor member 1 can be appropriately attached or pulled out according to the presence or absence of the obstacle non-interference area.

  FIG. 8A and FIG. 8B are front views of anchor members according to other embodiments. 8A is different from the anchor member 1 of the first embodiment shown in FIG. 1 in that a torsion spring is provided between the shaft portion 2 and the locking portion 3. It is the point provided with 3 A of latching parts which have the weight 3e which urges | biases the latching | locking part 3 to the arrow A method. The anchor member 1A is used when the shaft portion 2 is oriented in the horizontal direction, that is, when the through hole 12 is drilled in the horizontal direction. Also with the anchor member 1A having such a configuration, the same operational effects as the anchor member 1 are exhibited.

  The anchor member 1B of the third embodiment shown in FIG. 8B is different from the anchor member 1 of the first embodiment shown in FIG. 1 in that the engaging portion 3 is in a position along the shaft portion 2. The point provided with the locking part 3B provided with the protruding piece 3f at the end on the back side of the locking part 3 (the tip side with respect to the insertion direction into the through hole 12), and the protruding piece 3f of the locking part 3B One end of the operation string 7B made of a wire is coupled to the operation string 7B, and a knob 8B is provided at the other end of the operation string 7B. According to the anchor member 1B having such a configuration, when the knob portion 8 is pulled, the locking portion 3 is rotated in the arrow B direction, and when the knob portion 8B is pulled, the locking portion 3 is moved in the arrow A direction. Since it rotates, the effect similar to the anchor member 1 is show | played.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment. For example, in the above embodiment, the case where the operation string 7 is coupled to the end of the locking portion 3 has been described. However, the operation string 7 is coupled to a position slightly deviated from the rotation center portion 3b to the near side. Also good. Further, the engaging portion 3 may not be provided with the urging means. Furthermore, the latching | locking part 3 is not restricted to rotating the range of 90 degree | times, You may be able to rotate 360 degree | times or more.

  In the above embodiment, the presence / absence of the obstacle non-interference area is first determined after the presence / absence of the obstacle 18 is determined. However, the obstacle non-interference area may be determined only by determining the presence / absence of the obstacle 18. In the above embodiment, the case where the male screw portion 2b is formed on the shaft portion 2 and the nut 5 is used as the fastening member has been described. However, the proximal end side of the shaft portion 2 has a cylindrical shape, and the inner periphery thereof is female. A screw may be formed, and a bolt may be tightened as a fastening member. Furthermore, although the case of the roof panel P was demonstrated in the said embodiment, it cannot be overemphasized that this invention is applicable even if it is a wall panel extended to a perpendicular direction.

  DESCRIPTION OF SYMBOLS 1,1A, 1B ... Anchor member (member for confirmation), 2 ... Shaft part, 3 ... Locking part, 5 ... Nut (fastening member), 7, 7B ... Operation string, 10 ... Fixed object, 11 ... Back surface, 12 ... through hole, 13 ... surface, 18 ... obstacle, P ... panel.

Claims (3)

An anchor member for fixing an object to be fixed to the panel using a through hole formed in the panel,
A shaft portion inserted into the through hole;
A locking portion attached to the tip of the shaft portion and rotatable between a position intersecting the shaft portion and a position along the shaft portion;
An operation string having one end coupled to the front side of the locking portion when the locking portion is in a position along the shaft portion;
An anchor member comprising: An obstacle confirmation method for confirming the presence or absence of an obstacle on the back side of the panel using a through hole formed in the panel,
A shaft portion that is inserted into the through hole, a locking portion that is attached to a tip portion of the shaft portion and is rotatable between a position intersecting the shaft portion and a position along the shaft portion; Using an operation string having one end coupled to the front side of the locking portion when the locking portion is in a position along the shaft portion,
An insertion step of inserting the shaft portion and the locking portion into the through hole in a state where the locking portion is along the shaft portion and the other end of the operation string is kept on the surface side of the panel;
A rotation step of rotating the shaft portion in the through hole in a state where the locking portion that has advanced to the back side of the panel intersects the shaft portion;
A pulling step of pulling the other end of the operating string along the shaft portion and pulling the shaft portion and the locking portion from the through hole;
Obstacle confirmation method characterized by including. An anchor member mounting method for fixing an object to be fixed to the panel using a through-hole formed in the panel,
A shaft portion that is inserted into the through hole, a locking portion that is attached to a tip portion of the shaft portion and is rotatable between a position intersecting the shaft portion and a position along the shaft portion; Using the anchor member provided with an operation string having one end coupled to the front side of the locking portion when the locking portion is in a position along the shaft portion,
An insertion step of inserting the shaft portion and the locking portion into the through hole in a state where the locking portion is along the shaft portion and the other end of the operation string is kept on the surface side of the panel;
In a state where the locking portion that has advanced to the back side of the panel intersects the shaft portion, the shaft portion is rotated in the through hole to determine whether there is an obstacle non-interference area on the back side of the panel. And a decision step to
When it is determined in the determination step that the obstacle non-interference area is present, the fixed object is fixed by attaching a fastening member to the shaft portion protruding to the surface side of the panel,
When it is determined that the obstacle non-interference area is not present in the determining step, the other end of the operation string is pulled to bring the locking portion along the shaft portion, and the shaft portion and the locking portion are Pull out from the through hole,
An anchor member attachment method characterized by the above.

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