JP2008150825A - Border section structure and its installation method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a border section structure which can prevent a border member from being displaced or lifted, and which can prevent a step from being formed on the floor surface of a free-access floor. <P>SOLUTION: This border section structure comprises: the border member 32 which comprises a horizontal plate portion 36 provided almost in parallel with a sub-floor surface 10, and a vertical plate portion 38 continuously formed in such a shape as to be bent perpendicularly downward from one end of the horizontal plate portion 36 and having its height-direction lower end brought into contact with the sub-floor surface 10; and a supporting base A which comprises an upper end surface 18 subject to the placement of a panel 3 for the free-access floor, and a groove portion 20a opened on the upper end surface 18. The border member 32 has an engaging portion 40 which is formed in such a shape as to be bent downward from the other end of the horizontal plate portion 36, and which is engaged with the groove portion 20a. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a free access floor laid inside a room such as a clean room or an office room, and more particularly to a border portion structure and an installation method thereof.

  8 and 9 are a side cross-sectional view and a plan view showing the conventional border member 6 and the border portion structure 1 when the conventional border member 6 is installed. As shown in FIG. 8, the border member 6 is installed on the base floor surface 10 of the room where the free access floor 2 is laid, and between the panel member 3 of the free access floor 2 and the wall 4 of the room. However, the border member 6 is installed not only in such a place but also in various places not shown in order to form a floor surface continuous with the panel member 3.

  That is, the border member 6 cannot be provided with the panel member 3 which is a fixed member, and is formed halfway between the walls 4 and around the pillars (not shown) at a place away from the wall 4 in the room. It is installed to form a floor surface continuous with the panel member 3 in a space.

  In the following description, a halfway space such as the side of the wall 4 where the panel member 3 cannot be arranged or around a pillar (not shown) is referred to as a border portion (see FIG. 8). Further, a state in which the border member 6 is disposed adjacent to the panel member 3 in the border portion is referred to as a border portion structure.

  The border member 6 has a thickness (dimension t in FIG. 8) in a direction substantially perpendicular to the base floor surface 10, has a length substantially parallel to the base floor surface 10 and perpendicular to the wall 4. The horizontal plate portion 26 has a vertical plate portion 28 that is continuously bent and bent vertically from the one end of the horizontal plate portion 26 on the wall 4 side to the base floor surface 10 side. .

  In the border member 6, the horizontal plate portion 26 covers the base floor surface 10 above the border portion, and the end 26 a of the horizontal plate portion 26 opposite to the vertical plate portion 28 is the top surface of the panel member 3 closest to the wall 4. The vertical plate portion 28 is disposed so as to protrude substantially vertically on the base floor surface 10.

  Due to the border member 6, the border portion has a large step in the height direction between the panel member 3 and the base floor surface 10 (the dimension obtained by adding the thickness of the panel member 3 to the height of the support base 8. The floor surface of the free access floor 2 of the room is formed so as to extend from the panel member 3 to the wall 4.

  On the other hand, the free access floor 2 has a structure in which the panel member 3 is supported by a support base 8. The support table 8 includes an adjustment table 14 and a leg portion 16 that supports the adjustment table 14.

  FIG. 10 is a plan view of the support base 8 showing only the support base 8 taken out from FIGS. As shown in the figure, the support base 8 is formed so as to open on the upper end surface 18 of the adjustment base 14, and is provided with four groove portions that can be engaged with a bent side plate portion 24 of the panel member 3 to be described later. 20.

  The four groove portions 20 of the support base 8 are arranged in parallel with each other at regular intervals so that two of the four grooves extend in one direction on the upper end surface 18, and intersect the two at right angles. Thus, the other two are arranged in parallel with each other at a constant interval. In each of these four groove portions 20, two combinations arranged in parallel with each other intersect each other at substantially the center in the length direction of each other. In the length direction of each groove portion 20, the length dimension from the intersecting position with the other groove portion 20 extending in the direction perpendicular to the length direction to the circumferential surface tangent of the adjustment table 14 parallel to the length direction is defined. In FIG. 10, it is represented by L.

  FIG. 11 is a plan view of the panel member 3 showing only the panel member 3 taken out from FIGS. The panel member 3 is a fixed member, and as shown in the figure, the top plate portion 22 having a substantially square plane shape and the base floor surface 10 side (in FIG. And a side plate portion 24 that is bent so as to have a certain height on the back side in the direction perpendicular to the paper surface.

  As shown in FIG. 9, the panel member 3 is arranged in alignment in the vertical direction and the horizontal direction on the horizontal plane. And the support stand 8 has each corner part of the four panel members 3 except the thing used for supporting the corner part by the side of a border part of the panel member 3 arrange | positioned adjacent to a border part. It arrange | positions in the position gathered in one place, and supports each corner | angular part of these four panel members 3 from lower side.

  The support structure of the free access floor 2 when each support base 8 supports each corner of the four panel members 3 is such that each corner of the top plate 22 in each panel member 3 is as shown in FIG. 11 and both end portions of each side plate portion 24 shown in FIG. 11 extending in a direction parallel to each of the four sides of the top plate portion 22 of each panel member 3. The structure is such that the corresponding support base 8 is engaged within the length range of the dimension L of the groove 20 shown in FIG.

  However, in the conventional border portion structure 1 as described above, as shown in FIG. 8, the border member 6 has the end portion 26a of the horizontal plate portion 26 placed on the upper surface of the panel member 3, and the vertical plate. Since the portion 28 has a structure in which the portion 28 is merely vertically protruded and placed at a position near the wall 4 of the base floor surface 10, the vertical plate portion 28 is displaced in the horizontal direction within the border portion, although not shown. There is a problem that the end portion 26a may be lifted so that the horizontal plate portion 26 is inclined due to some external force, so that there is a problem of lack of safety.

  Moreover, in the conventional border part structure 1, since the edge part 26a of the horizontal board part 26 of the border member 6 is mounted in the upper surface of the panel member 3, a horizontal board part is provided on the floor surface of the free access floor 2. Since a level difference of 26 (thickness t in FIG. 8) is formed, when an organized shelf or a library is placed on such a level, the organized shelf or the archive is inclined. There was a possibility that it may peel off, and there was a problem that it was not preferred.

  Moreover, in the conventional border part structure 1, since the height of the vertical plate part 28 of the border member 6 could not be adjusted, the floor height of the free access floor 2 set to a different height for each room to be laid. Accordingly, there is a problem that the border member 6 in which the vertical plate portion 28 is formed at different heights for each room must be prepared each time.

  Therefore, in view of the above problems, the present invention can prevent the border member from being displaced or lifted, and can prevent the formation of a step on the floor surface of the free access floor. It is an object of the present invention to provide a structure and an installation method thereof.

  It is another object of the present invention to provide a border structure that can adjust the height of a vertical plate portion corresponding to free access floors having various floor heights, and an installation method thereof.

In order to solve the above problems, the present invention
A horizontal plate portion provided substantially parallel to the ground floor surface, and a vertical plate portion which is continuously formed by bending vertically downward from one end of the horizontal plate portion and whose lower end in the height direction is grounded to the ground floor surface A border member having
An upper end surface on which the panel for the free access floor is placed, and a support base having a groove portion opened in the upper end surface;
The border member has an engaging portion that is bent downward from the other end of the horizontal plate portion and engages with the groove portion.

Further, in order to solve the above problems, the present invention
The vertical plate portion has substantially the same height as the support base, and a portion other than the height necessary for forming the vertical plate portion is bent toward the engagement portion at the lower end portion. It is characterized by being.

In addition, in order to solve the above problem, the border member installation method according to the present invention includes:
About the border member having a horizontal plate portion provided substantially parallel to the ground floor surface,
A vertical plate portion that is bent vertically downward from one end of the horizontal plate portion is formed by bending, and when the vertical plate portion is formed, the lower end portion in the height direction is grounded to the ground floor. While adjusting the height of the vertical plate,
An engaging portion that is bent downward from the other end of the horizontal plate portion is formed by bending, and this engaging portion is engaged with a groove portion provided on the upper end surface of the support base on which the panel for the free access floor is placed. It is characterized by doing.

  Further, in the border member installation method according to the present invention, the adjustment of the height of the vertical plate portion may be performed by adjusting a portion other than the height necessary for the vertical plate portion to have substantially the same height as the support base. It is performed by bending the engagement portion side to form the lower end portion.

According to such a border structure according to the present invention,
A horizontal plate portion provided substantially parallel to the ground floor surface, and a vertical plate portion which is continuously formed by bending vertically downward from one end of the horizontal plate portion and whose lower end in the height direction is grounded to the ground floor surface A border member having
An upper end surface on which the panel for the free access floor is placed, and a support base having a groove portion opened in the upper end surface;
The border member is formed by bending downward from the other end of the horizontal plate portion, and has an engaging portion that engages with the groove portion.
Since the border member can be prevented from shifting or floating, the safety of the free access floor can be improved. Moreover, since it can prevent that a level | step difference is formed on the floor surface of a free access floor, it can prevent that the unfavorable state which an inclination shelf, a library, etc. tilt is invited.

In the border structure of the present invention,
The vertical plate portion has substantially the same height as the support base, and a portion other than the height necessary for forming the vertical plate portion is bent toward the engagement portion at the lower end portion. By
The border part structure can adjust the height of the vertical plate part corresponding to the free access floor of various floor heights, so prepare the border member with the vertical plate part formed in different heights for each room There is no need to do.

Moreover, according to the border part installation method according to the present invention,
About the border member having a horizontal plate portion provided substantially parallel to the ground floor surface,
A vertical plate portion that is bent vertically downward from one end of the horizontal plate portion is formed by bending, and when the vertical plate portion is formed, the lower end portion in the height direction is grounded to the ground floor. While adjusting the height of the vertical plate,
An engaging portion that is bent downward from the other end of the horizontal plate portion is formed by bending, and this engaging portion is engaged with a groove portion provided on the upper end surface of the support base on which the panel for the free access floor is placed. By doing
Since the border member can be prevented from shifting or floating, the safety of the free access floor can be improved. Moreover, since it can prevent that a level | step difference is formed on the floor surface of a free access floor, it can prevent that the unfavorable state which an inclination shelf, a library, etc. tilt is invited.

In the border portion installation method of the present invention, the height of the vertical plate portion may be adjusted by adjusting a portion other than the height necessary for the vertical plate portion to have substantially the same height as the support base. By being bent to the engagement portion side and forming the lower end portion,
The border part structure can adjust the height of the vertical plate part corresponding to the free access floor of various floor heights, so prepare the border member with the vertical plate part formed in different heights for each room There is no need to do.

The best mode for carrying out the border structure and the installation method thereof according to the present invention will be specifically described below with reference to the drawings.
FIG. 1 to FIG. 3 are diagrams which are referred to in order to describe the border part structure 30 and the installation method thereof according to the first embodiment of the present invention. The same parts as those in the prior art will be described using the same reference numerals, and overlapping description of the same configurations as those in the prior art shall be omitted.

  As shown in FIGS. 1 and 2, the border structure 30 according to the present embodiment includes a free access floor border member 32 (hereinafter referred to as “border member 32”) and a support base for the free access floor 2. 8 and is provided with a border side support base 8A for supporting a corner portion on the border portion side of the panel member 3 arranged adjacent to the border portion.

  In the following description, as shown in FIG. 1, the border extends in the direction parallel to the boundary line between the panel member 3 and the border portion (in FIG. 1, the direction perpendicular to the paper surface) and passes through the inside of the border portion. The groove 20 of the side support base 8A is particularly referred to as a border inner groove 20a.

  As shown in FIG. 1, the border member 32 has a horizontal plate portion 36, a vertical plate portion 38, and an engaging portion 40. The horizontal flat plate portion 36 is formed such that the length dimension W1 in the left-right direction in FIG. 1 is slightly shorter than the length in the same direction at the border portion. Further, the vertical plate portion 38 is formed to have the same height dimension H1 as the height of the border side support base 8A. The horizontal dimension W1 in the horizontal direction in FIG. 1 and the height dimension H1 of the vertical plate 38 in FIG. 1 are measured values of the length in the same direction of the border part and the height of the border side support base 8A. Determined based on.

  Further, the engaging portion 40 of the border member 32 is formed by being bent vertically from the end portion 36a of the horizontal plate portion 36 on the opposite side to the vertical plate portion 38 to the base floor surface 10 side. The engaging portion 40 is formed such that its height dimension is slightly smaller than the depth dimension of the in-border groove 20a of the border side support base 8A.

  Therefore, the height dimension of the engaging portion 40 is the same as the length dimension W1 of the horizontal plate portion 36 and the height dimension H1 of the vertical plate portion 38 described above, and the border side support and the border side support. Since it is not determined based on the actually measured value of the height of the base 8A, the engaging portion 40 can be formed in advance before the laying of the free access floor 2 is started.

  FIGS. 3A to 3C are diagrams showing a procedure for forming the border member 32, and are side views showing a side shape for each stage of the forming procedure. As shown in FIG. 5A, in the initial stage before the vertical plate portion 38 is formed on the border member 32, the engaging portion 40 is preliminarily bent at the end portion 36a of the horizontal plate portion 36. Is formed.

  As shown in FIG. 3 (b), the border member 32 starts from the stage of such a shape, based on the measured value of the horizontal length of the border portion shown in FIG. However, the vertical plate portion 38 is formed by being bent from the end on the engagement portion 40 side at a position where the dimension W1 is obtained after the bending.

  As shown in FIG. 3C, the border member 32 has a vertical dimension 38 that has the same height dimension H1 as the actual measurement value of the height of the border side support base 8A shown in FIG. An extra height portion of the vertical plate portion 38 on the base floor surface 10 side (the lower side in FIG. 3) is cut off to be completed. After the border member 32 is formed by such a procedure, as shown in FIG.

  According to the border part structure 30 and the installation method thereof according to the present embodiment as described above, the engaging part 40 of the border member 32 is engaged with the in-border groove part 20a of the border side support base 8A, thereby Since the member 32 can be prevented from shifting or floating, the safety of the free access floor can be improved. Moreover, since it can prevent that a level | step difference is formed on the floor surface of a free access floor, it can prevent that the unfavorable state which an inclination shelf, a library, etc. tilt is invited.

  Further, according to the border part structure 30 and the installation method thereof according to the present embodiment, since the engaging part 40 is formed in advance, compared to the case where the engaging part 40 is not formed in advance on the border member 32. Thus, the work until the border member 32 is formed into a final shape can be facilitated.

Next, FIG.4 and FIG.5 is a figure referred in order to demonstrate the border part structure 50 and its installation method based on the 2nd Embodiment of this invention.
Since the planar appearance of the border structure 50 according to the present embodiment is expressed in substantially the same manner as FIG. 2 showing the border structure 30 according to the first embodiment, the plan view is omitted. .

  As shown in FIG. 4, the border structure 50 according to the present embodiment includes a free access floor border member 52 (hereinafter referred to as a “border member 52”) and a border-side support base 8 </ b> A of the free access floor 2. It is configured with.

  The border member 52 includes a horizontal plate portion 56, a vertical plate portion 58, and an engagement portion 60, similarly to the border member 32 in the first embodiment. The border member 52 has a bent portion 62 at the lower end portion of the vertical plate portion 58 on the base floor surface 10 side. The bent portion 62 is formed by bending the end portion on the base floor surface 10 side of the vertical plate portion 58 before the bent portion 62 is formed substantially vertically to the engaging portion 60 side.

  FIGS. 5A to 5C are diagrams showing a procedure for forming the border member 52, and are side views showing the shape of each stage of the forming procedure. As shown in FIGS. 4A and 4B, the vertical plate portion 58 of the border member 52 is similar to the procedure for forming the vertical plate portion 38 of the border member 32 according to the first embodiment. As shown in FIG. 4, the original horizontal plate portion 56 is bent from the end portion on the engagement portion 60 side at a position where the dimension is W2 after being bent, based on the actually measured value of the horizontal length in FIG. A vertical plate portion 58 is formed.

  As shown in FIG. 5 (c), the border member 52 is formed on the floor surface side so that the vertical plate portion 58 has the same height dimension H2 as the height of the actually measured border side support base 8A in FIG. The extra height end portion is bent to the engagement portion 60 side to be completed. After the border member 52 is formed in such a procedure, as shown in FIG. 4, the border member 52 is installed in the border portion.

  According to the border portion structure 50 and the installation method thereof according to the present embodiment, the engaging portion 60 of the border member 52 is connected to the border of the border side support base 8A as in the first embodiment. By engaging the inner groove portion 20a, the border member 52 can be prevented from being displaced or lifted, so that the safety of the free access floor can be improved and the floor of the free access floor can be improved. Since it is possible to prevent the formation of a step, it is possible to prevent an unfavorable state in which an arrangement shelf, a library, or the like is inclined.

  In addition, since the engaging portion 60 is formed in advance, the work until the border member 52 is formed into a final shape as compared with the case where the engaging portion 60 is not formed in the border member 52 in advance. Can be easily.

  Further, according to the border portion structure 50 and the installation method thereof according to the present embodiment, the height of the vertical plate portion 58 can be adjusted, so that the border portion structure 50 can be formed as a free access floor having various floor heights. It can be installed corresponding to For this reason, it is not necessary to prepare a border member in which the vertical plate portions are formed at different heights for each room.

  In addition, since the cutting operation of the lower end portion of the vertical plate portion 58 is not required to form the border member 52, the operation until the border member 52 is formed into a final shape is performed in the first embodiment. It can be made easier than when forming the border member 32 according to the form, and waste material can be prevented from being generated.

Next, FIG.6 and FIG.7 is a figure referred in order to demonstrate the border part structure 70 and its installation method based on the 3rd Embodiment of this invention.
As shown in FIG. 6, the border structure 70 according to the present embodiment includes a free access floor border member 72 (hereinafter referred to as “border member 72”) and a border side support base 8 </ b> A of the free access floor 2. It is configured with.

  The border member 72 has a horizontal plate portion 76, a vertical plate portion 78, an engagement portion 80, and a bent portion 82, similarly to the border member 52 in the second embodiment. As with the bent portion 62 in the second embodiment, the bent portion 82 has a lower end on the base floor 10 side of the vertical plate portion 78 before the bent portion 82 is formed on the engaging portion 80 side. It is formed by bending. The bent portion 82 is formed by bending an end portion 82a opposite to the vertical plate portion 78 upward.

  FIGS. 7A to 7D are diagrams showing a procedure for forming the border member 72 and are side views showing the shapes of the steps in the forming procedure. As shown in FIGS. 6A and 6B, the vertical plate portion 78 of the border member 72 is similar to the formation procedure of the vertical plate portion 58 of the border member 52 according to the second embodiment. The horizontal plate portion 76 is bent from the side of the engaging portion 80 at a position where the dimension W3 is obtained after being bent, based on the actually measured value of the horizontal length in the drawing of the border portion shown in FIG. Is formed.

  Then, as shown in FIG. 7C, the border member 72 is formed on the floor surface side so that the vertical plate portion 78 has the same height dimension H3 as the height of the actually measured border side support base 8A in FIG. The extra height end portion is bent to the engaging portion 80 side as a bent portion 82.

  Thereafter, as shown in FIG. 7D, the end 82a opposite to the vertical plate portion 78 of the bent portion 82 is bent upward to complete. After the border member 72 is formed in such a procedure, as shown in FIG. 6, the border member 72 is installed in the border portion.

  According to the border part structure 70 and the installation method thereof according to the present embodiment as described above, the engaging part 80 of the border member 72 is connected to the border-side support base as in the first and second embodiments. Since the border member 72 can be prevented from being displaced or lifted by engaging with the 8A border inner groove 20a, the safety of the free access floor can be improved and the floor of the free access floor can be improved. Since it is possible to prevent a step from being formed on the surface, it is possible to prevent an unfavorable state in which a sorting shelf, a library, or the like is inclined.

  In addition, since the engaging portion 80 is formed in advance, the work until the border member 72 is formed into a final shape as compared with the case where the engaging portion 80 is not formed on the border member 72 in advance. Can be easily.

  Further, according to the border part structure 70 and the installation method thereof according to the present embodiment, the border part structure 50 can be formed by adjusting the height of the vertical plate part 78. It can be installed corresponding to For this reason, it is not necessary to prepare a border member in which the vertical plate portions are formed at different heights for each room.

  Similarly to the second embodiment, the border member 72 is formed in a final shape because the lower end portion of the vertical plate portion 78 is not required to form the border member 72. The above operations can be made easier than when the border member 32 according to the first embodiment is formed, and waste materials can be prevented from being generated.

  In addition, according to the border part structure 70 and the installation method thereof according to the present embodiment, since the end part 82a of the bent part 82 is bent upward, when the border member 72 is installed on the border part, It is possible to prevent the front end of the bent portion 82 from coming into contact with the border side support base 8A, which may occur when the bent end portion 82a is not formed on the border member 72.

  In the second and third embodiments, the height dimension is adjusted by bending the lower end portions of the vertical plate portions 58 and 78, but conversely, the lower end portion once bent. It is also possible to adjust the height dimension by extending the straight line to the original straight state.

  Moreover, in the said embodiment, as shown in FIG.1,4,6, as for the free access floor 2, the groove part 20 is formed in the adjustment stand 14 of the support stand 8 also including the border side support stand 8A, and this groove part 20 is shown. Although the side plate portion 24 of the panel member 3 is engaged with the panel member 3, the groove portion 20 is not formed on the adjustment base 14 of the support base 8, and the side plate portion 24 is not provided on the panel member 3. The corners of the panel member 3 may be screwed to the adjustment table 14.

  Further, in the border part structures 30, 50, 70 according to the first to third embodiments, the support bases 8, 8 </ b> A that support the panel member 3 have a structure including the leg parts 12 and the adjustment bases 14. However, the support base is not limited to such a structure. For example, the support base may have any form such as a substantially cylindrical support body having an upper end face and a groove similar to the upper end face 18 and the groove 20 of the support base 8.

  Further, in the border part structures 30, 50, 70 according to the first to third embodiments, the border side support base 8A is arranged adjacent to the border part as shown in FIG. In addition, the two panel members 3 arranged adjacent to each other in the vertical direction in FIG. 2 are configured to support two corners adjacent to each other on the border portion side. 3, the middle position of the side edge between the corners on the border portion side may be supported.

It is side surface sectional drawing which shows the border part structure 30 which concerns on the 1st Embodiment of this invention. It is a top view which shows the border part structure 30 which concerns on the 1st Embodiment of this invention. It is a figure which shows the formation procedure of the border member 32 in FIG. 1, Comprising: Fig.3 (a)-(c) is a side view which shows the shape for every step of the formation procedure. It is side surface sectional drawing which shows the border part structure 50 which concerns on the 2nd Embodiment of this invention. FIGS. 5A to 5C are side views showing the shape of each step of the forming procedure. FIGS. It is side surface sectional drawing which shows the border part structure 70 which concerns on the 3rd Embodiment of this invention. FIGS. 7A to 7D are side views showing the shape of each step of the forming procedure. FIGS. It is side surface sectional drawing which shows the conventional border part structure 1. FIG. It is a top view which shows the conventional border part structure 1. FIG. It is the top view which takes out and shows only the support stand 8 in FIG. It is the top view which takes out and shows only the panel member 3 in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Border part structure 2 Free access floor 3 Panel member 4 Wall 6 Border member 8 Support stand 8A Border side support stand 10 Floor surface 12 Leg part 14 Adjustment stand 15 Base board member 16 Support bolt member 18 Upper end surface 20 Groove part 20a Border inner groove part 22 Top plate portion 24 Side plate portion 26 Horizontal plate portion 26a End portion 28 Vertical plate portion 30 Border portion structure 32 Border member for free access floor 36 Horizontal plate portion 36a End portion 38 Vertical plate portion 40 Engagement portion 50 Border portion structure 52 Free Border member for access floor 56 Horizontal flat plate portion 58 Vertical plate portion 60 Engaging portion 62 Bending portion 70 Border portion structure 72 Border member for free access floor 76 Horizontal flat plate portion 78 Vertical plate portion 80 Engaging portion 82 Bending portion 82a End portion

Claims (4)

A horizontal plate portion provided substantially parallel to the ground floor surface, and a vertical plate portion which is continuously formed by bending vertically downward from one end of the horizontal plate portion and whose lower end in the height direction is grounded to the ground floor surface A border member having
An upper end surface on which the panel for the free access floor is placed, and a support base having a groove portion opened in the upper end surface;
The border member has an engaging portion that is formed by bending downward from the other end of the horizontal plate portion and engages with the groove portion. The vertical plate portion has substantially the same height as the support base, and a portion other than the height necessary for forming the vertical plate portion is bent toward the engagement portion at the lower end portion. The border part structure according to claim 1, wherein: About the border member having a horizontal plate portion provided substantially parallel to the ground floor surface,
A vertical plate portion that is bent vertically downward from one end of the horizontal plate portion is formed by bending, and when the vertical plate portion is formed, the lower end portion in the height direction is grounded to the ground floor. While adjusting the height of the vertical plate,
An engaging portion that is bent downward from the other end of the horizontal plate portion is formed by bending, and this engaging portion is engaged with a groove portion provided on the upper end surface of the support base on which the panel for the free access floor is placed. A border part installation method characterized by: The height of the vertical plate portion is adjusted by bending the portion other than the height necessary for the vertical plate portion to have substantially the same height as the support base to the engagement portion side. The border portion installation method according to claim 3, wherein the border portion installation method is performed.

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