Structure and method for attaching anchor member to frame body

Abstract

To make it possible for an anchor member to be attached to a frame body in a simple way and in a firm state when the frame body is attached to a skeleton side through the anchor member.SOLUTION: A frame body 2 is provided with a groove 2A having an opening on a skelton side and a pair of opposing pieces 2Ab provided on the opening side of the groove and facing each other with a space S therebetween. On the other hand, an anchor member 5 is configured with the usage of a first member 6 abutting the opposing pieces 2Ab from the outside of the groove, a second member 7 abutting the opposing pieces 2Ab from the inside of the groove, and a pair of tightening members 8 tightening the first and second members 6, 7 together. Furthermore, the second member 7 is made allowable to go in and out of the inside and outside of the groove from an interval between the opposing pieces, and a locking concave groove 7b in which a locking convex part 2Ac formed in the opposing piece is fitted and locked is provided in the second member 7, so that the relative rotation of the anchor member 5 relative to the frame body 2 can be restricted.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a structure and method for attaching an anchor member to a frame such as a sash when the anchor member is fixed to a frame side of the building frame. [Background technology]

[0002] 2. Description of the Related Art Generally, when attaching a frame such as a sash frame around an opening formed in a building skeleton, anchor members that are fixed to the skeleton by bolts, welding, or the like are sometimes used. A conventional method for attaching such an anchor member to a frame body is known (see, for example, Patent Document 1), in which a groove that opens toward the frame body is provided on the frame body, a pair of opposing pieces that face each other are provided on the opening side of the groove, and the anchor member is formed from a single flat member and has bifurcated locking portions at both longitudinal ends of the anchor member that sandwich and lock the pair of opposing pieces (see, for example, Patent Document 1).In this method, the length of the anchor member in the lateral direction is set shorter than the distance between the pair of opposing pieces of the frame body, so that the anchor member can be positioned between the pair of opposing pieces, and by rotating the anchor member positioned between the opposing pieces, the locking portions can be easily locked to the opposing pieces. On the other hand, there is also known an anchor member that is composed of two members, a first member and a second member, that abut against the opposing piece portions of the frame body from the outside and inside of a groove, and that is attached to the frame body by fastening these two members together with a screw (see, for example, Patent Document 2).In this anchor member, the second member is inserted into the groove in advance, and then screws are inserted into tapped holes in the second member in the groove through elongated holes formed in the first member that abuts against the opposing piece portions from the outside of the groove, and then fastened. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-195833 [Patent Document 2] Patent No. 2912276 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the structure of Patent Document 1, the engagement between the opposing pieces of the frame body and the anchor member is achieved simply by rotating the anchor member and clamping the opposing pieces with the forked locking portions formed on the anchor member, so while attaching the anchor member to the frame body is easy, there is a problem in that if a force greater than that at which the anchor member is clamping the opposing pieces acts on the frame body during strong winds such as a typhoon, there is a risk that the frame body may come off the anchor member. On the other hand, in the device disclosed in Patent Document 2, the second member placed in the groove is longer in the short direction than the distance between the opposing pieces of the frame, so the second member is inserted into the groove in advance from the longitudinal direction of the frame, and the second member in the groove and the first member outside the groove are fastened with screws. However, the process of inserting the second member into the groove and then fastening the second member to the first member with screws in this manner requires aligning the first member with the second member, which is inefficient. Therefore, in the device disclosed in Patent Document 2, the screw through holes formed in the first member are elongated holes, but this poses the problem that the first member and the second member are more likely to move relative to each other in the long diameter direction of the elongated holes. These are the problems that the present invention aims to solve. [Means for solving the problem]

[0005] The present invention has been made in view of the above-mentioned circumstances and with the aim of solving these problems. The invention of claim 1 relates to a method for attaching an anchor member to a building skeleton to a frame installed around an opening formed in the skeleton, the method comprising the steps of: providing the frame with a groove extending along the longitudinal direction of the frame and opening on the skeleton side; and providing a pair of opposing plates on the opening side of the groove extending along the longitudinal direction of the frame and opposing each other with a gap between them; the anchor member has a fixing portion fixed to the skeleton, and comprises a first member abutting the pair of opposing plates from the outer side of the groove, and a second member abutting the pair of opposing plates from the inner side of the groove, the first and second members sandwiching the pair of opposing plates. and a pair of fastening members that fasten the first and second members together to hold the anchor member in place, and the second member is set so that in a specified mounting position, the length of the second member in the width direction of the groove is longer than the distance between the pair of opposing pieces, but in a rotated position obtained by rotating the second member from the mounting position around the center of the groove in the width direction as an axis, the length of the second member in the width direction of the groove is shorter than the distance between the opposing pieces, and when in the rotated position, the second member is able to move freely in and out of the groove due to the distance between the opposing pieces, and a restricting means is provided between the opposing pieces and at least one of the first and second members to restrict relative rotation of the anchor member with respect to the opposing pieces when the first and second members are fastened by the fastening members. The invention of claim 2 is a mounting structure for an anchor member to a frame body in claim 1, characterized in that when mounting the anchor member to the frame body, the first and second members are temporarily fastened in an untightened state in which relative rotation is prevented by the pair of fastening members and there is a gap between the first and second members, and in this temporarily fastened state the second member in a rotated attitude is inserted into a groove portion of the frame body and positioned within the groove, while the first member is positioned outside the groove, and with the second and first members positioned inside and outside the groove, the anchor member is rotated to a mounting attitude and the second and first members are fastened together with the fastening members. The invention of claim 3 is a mounting structure for an anchor member to a frame body, characterized in that, in claim 1 or 2, the regulating means is formed using a convex portion formed at the tip end of a pair of opposing pieces extending along the longitudinal direction of the frame body and protruding toward the first or second member, and a concave portion formed in the first or second member into which the convex portion fits and engages. The invention of claim 4 is a structure for attaching an anchor member to a frame body, characterized in that in claim 3, the recess formed in the first or second member is U-shaped or V-shaped. The invention of claim 5 relates to a method for attaching an anchor member fixed to the building skeleton to a frame installed around an opening formed in the building skeleton, the method comprising the steps of: providing the frame with a groove extending along the longitudinal direction of the frame and opening on the building skeleton side; and providing a pair of opposing pieces on the opening side of the groove extending along the longitudinal direction of the frame and opposing each other with a gap therebetween; the anchor member has a fixing portion fixed to the building skeleton and is composed of a first member abutting the pair of opposing pieces from the outer side of the groove; a second member abutting the pair of opposing pieces from the inner side of the groove; and a pair of fastening members fastening the first and second members together so as to sandwich the pair of opposing pieces between them; and the second member has a length in the width direction of the groove that is longer than the distance between the pair of opposing pieces in a predetermined installation position, but is not required for installation. and a method for attaching an anchor member to a frame body, the anchor member being configured such that in a rotated position, the anchor member is rotated around the center of the groove in the width direction as an axis, the length of the groove in the width direction is set to be shorter than the distance between the opposing pieces, and the rotated position allows the anchor member to freely move in and out of the groove due to the distance between the opposing pieces. On the other hand, the method for attaching an anchor member to a frame body includes the steps of: temporarily fastening the first and second members in an untightened state in which relative rotation is prevented by the pair of fastening members and there is a gap between the first and second members; inserting the second member in the rotated position into the groove of the frame body so as to position it within the groove while positioning the first member outside the groove; and rotating the anchor member with the second and first members positioned inside and outside the groove, and fastening the first and second members, which have been placed in the attached position, with the fastening members. The invention of claim 6 is a method for attaching an anchor member to a frame body according to claim 5, characterized in that a restricting means is provided between the opposing piece and at least one of the first and second members, for restricting relative rotation of the anchor member with respect to the opposing piece while the first and second members are fastened by the fastening member. [Effects of the Invention]

[0006] According to the invention of claim 1, the work of attaching the anchor member to the frame body is facilitated, and the anchor member can be attached to the frame body in a strong state in which relative rotation is restricted. According to the invention of claim 2, it is not necessary to align the first member and the second member in the attached position, which further improves the workability of attaching the anchor member to the frame body. According to the invention as defined in claim 3, the relative rotation of the anchor member can be reliably restricted. According to the invention as defined in claim 4, the recess provided in the first member or the second member can be formed by simple processing. According to the invention as defined in claim 5, the workability of the work of attaching the anchor member to the frame body can be improved. According to the invention as defined in claim 6, the anchor member can be firmly attached to the frame body with relative rotation restricted. [Brief explanation of the drawings]

[0007] [Figure 1] This is an interior view of the window. [Figure 2] FIG. 2 is a cross-sectional view taken along line XX in FIG. 1 according to the first embodiment. [Figure 3] 1A to 1E are diagrams showing an anchor member of a first embodiment, in which (A) is a plan view, (B) is a front view, (C) is a side view, (D) is a bottom view, and (E) is an exploded perspective view. [Figure 4] 10A, 10B, and 10C are diagrams showing the procedure for attaching the anchor member to the frame body. [Figure 5] FIG. 2 is a cross-sectional view taken along line XX in FIG. 1 according to the second embodiment. [Figure 6]10A to 10E are diagrams showing an anchor member of a second embodiment, in which (A) is a plan view, (B) is a front view, (C) is a side view, (D) is a bottom view, and (E) is an exploded perspective view. [Figure 7] FIG. 2 is a cross-sectional view taken along line XX in FIG. 1 according to a third embodiment. [Figure 8] 10A to 10E are diagrams showing an anchor member of a third embodiment, in which (A) is a plan view, (B) is a front view, (C) is a side view, (D) is a bottom view, and (E) is an exploded perspective view. [Figure 9] FIG. 2 is a cross-sectional view taken along line AA in FIG. 1 according to the fourth embodiment. [Figure 10] 10A to 10E are diagrams showing an anchor member of a fourth embodiment, in which (A) is a plan view, (B) is a front view, (C) is a side view, (D) is a bottom view, and (E) is an exploded perspective view. [Figure 11] 10A and 10B are diagrams showing the state in which the anchor member is attached to the frame body when the screw attachment positions are different in the fourth embodiment. [Figure 12] (A) is an oblique view of the anchor member of Reference Example 1, (B) is a diagram showing the state in which the anchor member of Reference Example 1 is attached to a frame body, (C) is an oblique view of the anchor member of Reference Example 2, and (D) is a diagram showing the state in which the anchor member of Reference Example 2 is attached to a frame body. [Figure 13] (A) is an oblique view of the anchor member of Reference Example 3, (B) is a diagram showing the state in which the anchor member of Reference Example 3 is attached to a frame body, (C) is a plan view of the anchor member of Reference Example 4, and (D) is a diagram showing the state in which the anchor member of Reference Example 4 is attached to a frame body. [Figure 14] (A) is a plan view of the anchor member of Reference Example 5, (B) is a diagram showing the state in which the anchor member of Reference Example 5 is attached to a frame body, (C) is a plan view of the anchor member of Reference Example 6, and (D) is a diagram showing the state in which the anchor member of Reference Example 6 is attached to a frame body. [Figure 15] (A) is a plan view of the anchor member of Reference Example 7, (B) is a diagram showing the state in which the anchor member of Reference Example 7 is attached to a frame body, (C) is a plan view of the anchor member of Reference Example 8, and (D) is a front view of the anchor member of Reference Example 8.

[0008] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. First, a first embodiment of the present invention will be described with reference to Figures 1 to 4. In these figures, reference numeral 1 denotes a window installed in an opening in a building. The window 1 comprises a rectangular window frame (sash frame) 3 formed with four surrounding frames 2 (top frame 2a, bottom frame 2b, and left and right vertical frames 2c, 2d), and a shoji screen 4 fixedly or movably attached to the inside of the window frame 3. Note that this embodiment employs a dry construction method in which the periphery of the window frame 3 is not filled with a filler such as mortar. Figure 1 is also used in other embodiments and reference examples described below.

[0009] Each frame 2 has a groove 2A that is open on the side facing the frame body and extends along the longitudinal direction of the frame body 2 (the width direction of the opening in the upper frame 2a and the lower frame 2b, and the up-down direction of the opening in the left and right vertical frames 2c and 2d). The groove 2A has a pair of groove side surfaces 2Aa that protrude toward the frame body, and a pair of opposing pieces 2Ab that extend toward opposite sides are bent from the tips of the pair of groove side surfaces 2Aa on the frame body side. The tips of the pair of opposing pieces 2Ab are spaced apart by a distance S, so that the pair of opposing pieces 2Ab that face each other across the distance S are provided on the opening side of the groove 2A, and the tips of the pair of opposing pieces 2Ab are formed with locking protrusions (corresponding to protrusions of the present invention) 2Ac that extend along the longitudinal direction of the frame body 2 and protrude in a bulging manner toward the inside of the groove 2A. In the figure, 2B is a groove for the shoji screen formed in the frame body 2 to fit and support the edge portion of the shoji screen 4, and in this embodiment, the shoji screen groove 2B is located in the middle of the groove portion 2A in the forward direction to which the anchor member 5 is attached.

[0010] On the other hand, 5 is an anchor member used to fix the frame body 2 to the main body side, and is made of steel or the like. Multiple anchor members are attached at intervals along the longitudinal direction of the frame body 2. The anchor member 5 is composed of a first member 6 and a second member 7, which will be described later, and a pair of screws 8 (corresponding to the fastening member of the present invention) that fasten these first and second members 6, 7 together.

[0011] The first member 6 is formed with a rectangular, flat main body 6a whose longitudinal length is set longer than the distance S between the pair of opposing pieces 2Ab of the frame body 2, and a fixing portion 6b erected on the main body 6a, and the main body 6a is provided with screw through holes 6c spaced apart in the longitudinal direction, through which the pair of screws 8 pass. As will be described later, the anchor member 5 is attached to the frame body 2 by fastening the first member 6 and the second member 7 with the screws 8. With the anchor member 5 attached to the frame body 2, the first member 6 is in a predetermined attachment position in which the longitudinal direction of the main body 6a faces the groove width direction of the groove 2A of the frame body 2, and both longitudinal end portions of the main body 6a that are on the longitudinal outward side of the screw through holes 6c abut against the pair of opposing pieces 2Ab of the frame body 2 from the outer sides of the groove 2A. On the other hand, when the anchor member 5 is attached to the frame body 2, the fixing portion 6b of the first member 6 protrudes from the main body portion 6a toward the frame body, and the tip of the protruding portion is fixed by welding or the like to a connecting steel material 10 fixed to the frame body side structural material 9, thereby attaching and fixing the frame body 2 to the frame body side via the anchor member 5.

[0012] The second member 7 includes a rectangular, flat main body 7a and a pair of U-shaped locking grooves (corresponding to recesses of the present invention) 7b formed on both longitudinal ends of the main body 7a, and the main body 7a is formed with screw grooves 7c into which the pair of screws 8 are screwed, at a position slightly closer to the longitudinal center than the position where the locking grooves 7b are formed. The longitudinal length of the entire second member 7 including the main body 7a and the locking grooves 7b is set to be longer than the distance S between the pair of opposing pieces 2Ab of the frame 2 and shorter than the groove width of the groove 2A, while the lateral length is set to be shorter than the distance S between the opposing pieces 2Ab. In addition, the locking groove 7b is formed so that the groove direction faces the short direction of the main body portion 7a, and is composed of a first groove side portion 7d that is bent at a right angle and continues from both longitudinal ends of the main body portion 7a, a groove bottom portion 7e that is bent at a right angle and continues from the first groove side portion 7d, and a second groove side portion 7f that is bent at a right angle and continues from the groove bottom portion 7e, and is located on the outermost longitudinal side of the second member 7. When the anchor member 5 is attached to the frame body 2, the second member 7 is in a predetermined attachment posture with its longitudinal direction facing the groove width direction of the groove portion 2A of the frame body 2, and the main body portion 7a abuts against the main body portion 6a of the first member 6 in a face-to-face contact state. In addition, the tip end of the second groove side surface portion 7f located on the outermost longitudinal side of the second member 7 abuts against the pair of opposing piece portions 2Ab of the frame body 2 from the inner side of the groove portion 2A, and further, the locking protrusions 2Ac at the tip end of the opposing piece portions 2Ab are fitted into and locked into the locking recess grooves 7b of the second member 7.

[0013] Here, when the main body portion 6a of the first member 6 and the main body portion 7a of the second member 7 are brought into surface contact with each other in a state where the anchor member 5 is not attached to the frame body 2, the tip of the second groove side surface portion 7f of the second member 7 is set to be separated from the main body portion 6a of the first member 6 by a distance L (L < D) slightly shorter than the plate thickness D of the opposing piece portion 2Ab (see FIG. 3(B)). Thereby, with the opposing piece portion 2Ab of the frame body 2 positioned between both longitudinal ends of the main body portion 6a of the first member 6 and the tips of the second groove side surface portions 7f of the second member 7, by tightening the first member 6 and the second member 7 with the screw 8, the opposing piece portion 2Ab of the frame body 2 can be clamped with a strong clamping force between both longitudinal ends of the main body portion 6a of the first member 6 and the tips of the second groove side surface portions 7f of the second member 7. Further, in a state where the opposing piece portion 2Ab is clamped by the first member 6 and the second member 7, the locking convex portion 2Ac at the tip of the opposing piece portion 2Ab is fitted and locked into the locking concave groove 7b of the second member 7, whereby it is possible to reliably regulate the anchor member 5 from rotating relative to the opposing piece portion 2Ab about the longitudinal center portion as an axis. Note that the locking convex portion (the convex portion of the present invention) 2Ac and the locking concave groove (the concave portion of the present invention) 7b constitute the regulating means of the present invention.

[0014] Also, the length of the second member 7 in the short direction is set to be shorter than the interval S between the opposing piece portions 2Ab as described above. Thereby, the second member 7 can be moved in and out of the interval S between the opposing piece portions 2Ab and inside and outside the groove portion 2A by rotating the second member 7 about the center portion in the groove width direction of the groove portion 2A of the frame body 2 as an axis from a predetermined mounting posture where the longitudinal direction faces the groove width direction of the groove portion 2A of the frame body 2 to a rotating posture where the short direction faces the groove width direction of the groove portion 2A.

[0015] Next, the procedure for attaching the anchor member 5 to the frame body 2 will be described. First, the first and second members 6 and 7 constituting the anchor member 5 are temporarily fastened by the pair of screws 8 in an untightened state in which the relative rotation between the first and second members 6 and 7 is prevented and there is a gap between the main bodies 6a and 7a. Then, in this temporarily fastened state, the second member 7 in the rotated position (the short side of the second member 7 faces the width direction of the groove 2A) is inserted into the groove 2A of the frame 2, while the first member 6 is positioned outside the groove 2A (see FIG. 4(A)). Furthermore, with the second and first members 7 and 6 positioned inside and outside the groove 2A, the anchor member 5 in the temporarily fastened state is rotated (see FIG. 4(B)), and the first and second members 6 and 7 are placed in the attached position (the long side faces the width direction of the groove 2A) (see FIG. 4(C)). In this case, the first member 6 and the second member 7 are temporarily fastened in a state where relative rotation is prevented, and therefore, by setting the first member 6, which is located outside the groove 2A and therefore easily visible, to the attached position, the second member 7 can also be accurately set to the attached position. Then, by tightening the pair of screws 8 with the first member 6 and the second member 7 in the attached position, both longitudinal ends of the main body 6a of the first member 6 abut against the facing piece 2Ab from the outer side of the groove 2A, and the tip end of the second groove side surface portion 7f of the second member 7 abuts against the facing piece 2Ab from the inner side of the groove 2A, the facing piece 2Ab is sandwiched between the first member 6 and the second member 7, and with the facing piece 2Ab sandwiched, the locking protrusion 2Ac at the tip end of the facing piece 2Ab fits into and is locked in the locking recess 7b of the second member 7 (see FIG. 4(C)).

[0016] In the first embodiment configured as described above, each frame body 2 (upper frame 2a, lower frame 2b, left and right vertical frames 2c, 2d) that constitutes the window frame 3 is attached to the main body side via anchor members 5. In this case, the frame body 2 is provided with a groove portion 2A that extends along the longitudinal direction of the frame body 2 and is open on the main body side, and a pair of opposing pieces 2Ab that are provided on the opening side of the groove portion 2A and extend along the longitudinal direction of the frame body 2, facing each other with a gap S between them. On the other hand, the anchor member 5 has a fixing portion 6a fixed to the body side, and is composed of a first member 6 that abuts against the pair of opposing pieces 2Ab from the outer side of the groove 2A, a second member 7 that abuts against the pair of opposing pieces 2Ab from the inner side of the groove 2A, and a pair of screws 8 that fasten the first and second members 6, 7 together so as to sandwich the pair of opposing pieces 2Ab between them.In a specified installation position, the length of the second member 7 in the width direction of the groove 2A is longer than the distance S between the pair of opposing pieces 2Ab, but in a rotated position obtained by rotating the installation position around the axis of the center of the groove 2A in the width direction, the length of the second member 7 in the width direction of the groove 2A is set to be shorter than the distance S between the opposing pieces 2Ab, and when in the rotated position, it is configured so that it can freely move in and out of the groove 2A based on the distance S between the opposing pieces 2Ab. Furthermore, when the first and second members 6, 7 are fastened together with the screws 8, the locking protrusion 2Ac formed on the opposing piece 2Ab is fitted into and locked into the locking groove 7b formed on the second member 7, thereby restricting the relative rotation of the anchor member 5 with respect to the opposing piece 2Ab.

[0017] In this way, the anchor member 5 is attached to the frame body 2 by sandwiching the opposing piece 2Ab of the frame body 2 between the first member 6 and the second member 7. In this case, the second member 7, which abuts against the opposing piece 2Ab from the inner side of the groove 2A, can be easily positioned in the groove 2A of the frame body 2 by rotating the second member 7, facilitating the attachment work of the anchor member 5. Furthermore, the anchor member 5 attached to the frame body 2 is restricted in relative rotation with respect to the opposing piece 2Ab by fitting and engaging the locking protrusion 2Ac formed on the opposing piece 2Ab with the locking recessed groove 7b formed on the second member 7. As a result, even if a strong force acts on the frame body 2 due to strong winds such as a typhoon, the anchor member 5 rotates relative to the frame body 2, which reliably prevents the second member 7 from rotating and becoming detached from the frame body 2. Therefore, the anchor member 11 can be attached to the frame body 2 in a secure state in which its relative rotation with respect to the frame body 2 is restricted.

[0018] Furthermore, in this device, when attaching the anchor member 5 to the frame body 2, the first and second members 6, 7 are temporarily fastened in an untightened state where relative rotation is prevented by a pair of screws 8 and there is a gap between the first and second members 6, 7, and in this temporarily fastened state the second member 7 in a rotated position is inserted into the groove 2A of the frame body 2 and positioned within the groove 2A, while the first member 8 is positioned outside the groove 2A. With the second and first members 7, 6 positioned inside and outside the groove 2A, the anchor member 5 is rotated to the attached position and the second member 7 and first member 6 are fastened with the screws 8, thereby eliminating the need to align the second member 7 and first member 6 in the attached position. As a result, the anchor member 5 can be easily attached to the frame body 2, which greatly contributes to improving the workability of the attachment work.

[0019] Furthermore, the relative rotation of the anchor member 5 with respect to the opposing pieces 2Ab is regulated by means of locking protrusions 2Ac that are formed at the tip ends of the pair of opposing pieces 2Ab and extend along the longitudinal direction of the frame body 2 and protrude toward the second member 7, and by means of U-shaped locking grooves 7b that are formed in the second member 7 and into which the locking protrusions 2Ac fit and engage.Such locking protrusions 2Ac and locking grooves 7b can be formed by simple processing, which contributes to cost reduction and ensures that the relative rotation of the anchor member 5 is regulated reliably.

[0020] Furthermore, in this embodiment, attaching the anchor member 5 to the frame body 2 includes the steps of: temporarily fastening the first and second members 6, 7 in an untightened state in which their relative rotation is prevented by a pair of screws 8 and there is a gap between the first and second members 6, 7; inserting the second member 7 in a rotated position in the temporarily fastened state into the groove 2A of the frame body 2 to position it within the groove 2A while positioning the first member 6 outside the groove 2A; and rotating the anchor member 5 with the second and first members 7, 6 positioned inside and outside the groove 2A to fasten the second member 7 and the first member 6 in the attached position with the screws 8. This eliminates the need to align the second member 7 and the first member 6 in the attached position, as described above, which can greatly contribute to improving the efficiency of the attachment work.

[0021] Next, a second embodiment of the present invention will be described with reference to Figures 5 and 6. In the second embodiment and the third and fourth embodiments described later, the same components as those in the first embodiment are denoted by the same reference numerals and will not be described again. 5 and 6, reference numeral 11 denotes an anchor member of the second embodiment, which, like the first embodiment described above, is composed of a first member 6, a second member 12, and a pair of screws 8 that fasten these first and second members 6, 12 together, but because the first member 6 is the same as in the first embodiment, it is given the same reference numeral and its description will be omitted. Also, like the frame body 2 of the first embodiment, the frame body 2 of the second embodiment is provided with a pair of opposing pieces 2Ab on the opening side of the groove 2A, and further with locking protrusions 2Ac at the tip ends of the opposing pieces 2Ab, but the length of the opposing pieces 2Ab in the width direction of the groove 2A is set shorter than the length of the opposing pieces 2Ab in the width direction of the groove 2A in the first embodiment.

[0022] On the other hand, like the second member 7 of the first embodiment, the second member 12 of the anchor member 11 of the second embodiment is configured to include a rectangular, flat main body 12a, a pair of locking grooves 12b formed on both longitudinal ends of the main body 12a, and screw holes 12c drilled in the main body 12a into which a pair of screws 8 are screwed. The longitudinal length of the entire second member 12 including the main body 12a and the locking grooves 12b is set to be longer than the distance S between the pair of opposing pieces 2Ab of the frame 2 and shorter than the groove width of the groove 2A, while the lateral length is set to be shorter than the distance S between the opposing pieces 2Ab, but the locking grooves 12b of the second embodiment are V-shaped. The V-shaped locking groove 12b is formed with a first groove side surface 12d that is bent at an angle and continues from both longitudinal ends of the main body 12a, and a second groove side surface 12e that is bent at an angle and continues from the first groove side surface 12d, and is located on the outermost longitudinal side of the second member 12, with the groove direction facing the short direction of the main body 12a. When the anchor member 11 is attached to the frame 2, the second member 12 is in a predetermined attachment position with its longitudinal direction facing the groove width direction of the groove 2A of the frame 2, the main body 12a abuts against the main body 6a of the first member 6 in a surface-to-surface contact state, and the locking protrusion 2Ac at the tip of the facing piece 2Ab is fitted into the locking groove 12b, so that the groove inner side surface of the second groove side surface 12e abuts against the fitted locking protrusion 2Ac from the inside of the groove 2A. As a result, by fastening the first member 6 and the second member 12 together with the screws 8, the opposing piece 2Ab of the frame 2 is sandwiched between both longitudinal ends of the main body 6a of the first member 6 and the groove inner side surface of the second groove side surface 12e of the second member 12. Furthermore, with the opposing piece 2Ab sandwiched between the first member 6 and the second member 12, the locking protrusion 2Ac at the tip of the opposing piece 2Ab is fitted into and locked into the locking recessed groove 12b of the second member 12, as described above, which reliably prevents the anchor member 11 from rotating relative to the opposing piece 2Ab around the longitudinal center as an axis.

[0023] Here, in the anchor member 5 of the first embodiment, the longitudinal lengths of the first member 6 and the second member 7 are set to be approximately the same dimensions, but in the anchor member 11 of the second embodiment, the longitudinal length of the second member 12 is set to be slightly shorter than the longitudinal length of the first member 6, and is configured so that when the first and second members 6, 12 are fastened together with the screws 8, the longitudinal end of the second member 12 is slightly closer to the longitudinal center than the longitudinal end of the first member 6. As described above, when the first member 6 and the second member 12 are tightened together, the inner groove side surface of the second groove side surface portion 12e, which is the outermost in the longitudinal direction of the second member 12, abuts against the locking protrusion 2Ac at the tip of the opposing piece portion 2Ab from the inside of the groove portion 2A.This makes it possible to clamp the opposing piece portion 2Ab between the first member 6 and the second member 7 even if the length of the opposing piece portion 2Ab in the width direction of the groove portion 2A is short and the overlapping portion between the opposing piece portion 2Ab and the second member 12 in the inner and outer directions of the groove portion 2A is short.

[0024] As in the case of the first embodiment described above, the anchor member 11 of the second embodiment configured in this manner can be easily attached to the frame body 2 by temporarily fastening the first member 6 and the second member 12 with a pair of screws 8 so that relative rotation is prevented and there is a gap between the first and second members 6, 12, and the anchor member 11 can be firmly attached to the frame body 2 with relative rotation with respect to the opposing piece portion 2Ab prevented.

[0025] Next, a third embodiment of the present invention will be described with reference to Figures 7 and 8. Similar to the first and second embodiments, the frame 2 of the third embodiment is provided with a pair of opposing pieces 2Ab that face each other across a gap S on the opening side of the groove 2A, but does not have locking protrusions 2Ac at the tips of the opposing pieces 2Ab as in the first and second embodiments. In Figures 7 and 8, reference numeral 19 denotes an anchor member of the third embodiment, which, like the first and second embodiments described above, is composed of a first member 20, a second member 21, and a pair of screws 8 that fasten these first and second members 20, 21 together.

[0026] The first member 20 of the third embodiment is formed with a rectangular, flat main body 20a whose longitudinal length is set longer than the distance S between the pair of opposing pieces 2Ab of the frame 2, and a fixing portion 20b erected on the main body 20a and fixed to the frame side, and the main body 20a is provided with screw through holes 20c spaced apart in the longitudinal direction and through which the pair of screws 8 pass. Furthermore, chamfered portions 20d are formed at both longitudinal ends of the main body 20a at a pair of corners that are point-symmetrical about the center of the main body 20a. This makes it possible to see the corners of both longitudinal ends of the second member 21 from the chamfered portions 20d of the first member 20 when the first member 20 and the second member 21 are temporarily fastened together with a pair of screws 8 in the same manner as in the first embodiment. Then, with the anchor member 19 attached to the frame body 2, the first member 20 is in a predetermined attachment position with its longitudinal direction facing the groove width direction of the groove portion 2A of the frame body 2, and both longitudinal ends that are longitudinally outward of the screw through hole 20c abut against a pair of opposing piece portions 2Ab of the frame body 2 from the outer side of the groove portion 2A.

[0027] On the other hand, the second member 21 of the third embodiment has a rectangular flat plate shape and is formed with screw holes 21a into which the pair of screws 8 are screwed. Then, with the anchor member 19 attached to the frame body 2, the second member 21 is in a predetermined attachment position with its longitudinal direction facing the groove width direction of the groove portion 2A of the frame body 2, and both longitudinal end portions abut against the pair of opposing piece portions 2Ab of the frame body 2 from the inner side of the groove portion 2A.

[0028] In the third embodiment, the anchor member 19 is configured so that the opposing piece portion 2Ab of the frame body 2 is positioned between both longitudinal ends of the first member 20 and both longitudinal ends of the second member 21, and then the first member 20 and the second member 21 are fastened together with the screws 8, thereby enabling the opposing piece portion 2Ab of the frame body 2 to be securely clamped between the first member 20 and the second member 21. Furthermore, in the anchor member 19 of the third embodiment, as in the first and second embodiments described above, the first member 20 and the second member 21 are temporarily fastened with a pair of screws 8 to prevent relative rotation and with a gap between them, and the second member 21 is then inserted into the groove 2A of the frame body 2 in a rotated position (with its short side facing the groove width direction of the groove 2A), while the first member 20 is positioned outside the groove 2A. In this state, the anchor member 5 is rotated to an attached position (with its long side facing the groove width direction of the groove 2A), and then tightened with the screws 8, thereby easily attaching the anchor member to the frame body 2. In this case, both longitudinal ends of the second member 21 can be seen from the chamfered portion 20d formed on the first member 20, so that the task of rotating the anchor member 19 to position the opposing piece portion 2Ab of the frame body 2 between both longitudinal ends of the first member 20 and both longitudinal ends of the second member 21 can be performed more easily.

[0029] Next, a fourth embodiment of the present invention will be described with reference to Figures 9 to 11. Note that, similar to the third embodiment, the frame body 2 of the fourth embodiment does not have a locking protrusion 2Ac at the tip end of the opposing piece portion 2Ab. 9 to 11, reference numeral 16 denotes an anchor member of the fourth embodiment, and similarly to the first to third embodiments described above, anchor member 16 is configured using a first member 17, a second member 18, and a pair of screws 8 that fasten these first and second members 17, 18 together.

[0030] Like the first member 20 of the third embodiment, the first member 17 of the fourth embodiment includes a rectangular, flat main body 17a whose longitudinal length is set to be longer than the distance S between the pair of opposing pieces 2Ab of the frame 2, and a fixing portion 17b that is fixed to the frame body side, and the main body 17a is provided with screw through holes 17c through which the pair of screws 8 pass, whereas in the third embodiment, a total of four screw through holes 17c are provided, two for each screw 8, spaced apart in the longitudinal direction. Furthermore, the first member 17 of the fourth embodiment is also formed with chamfered portions 17d similar to the first member 20 of the third embodiment.

[0031] On the other hand, the second member 18 of the fourth embodiment has a rectangular flat plate shape, similar to the second member 21 of the third embodiment, and is formed with screw holes 18a into which the pair of screws 8 are screwed, but the screw holes 18a correspond to the screw through holes 17c of the first member 17, and there are a total of four screw holes 18a, two for each screw 8.

[0032] As in the third embodiment, the anchor member 16 of the fourth embodiment is configured so that the opposing piece portion 2Ab of the frame body 2 is positioned between both longitudinal ends of the first member 17 and both longitudinal ends of the second member 18, and then the first member 17 and the second member 18 are fastened together with the pair of screws 8, thereby enabling the opposing piece portion 2Ab of the frame body 2 to be securely sandwiched between the first member 20 and the second member 21. However, in this case, as shown in Figure 11, the fourth embodiment allows the through holes 17c and screw holes 18a through which the pair of screws 8 pass and are screwed to be selected depending on the shape and dimensions of the groove portion 2A of the frame body 2, resulting in excellent versatility. Furthermore, in the anchor member 16 of the fourth embodiment, similarly to the first to third embodiments described above, the first member 17 and the second member 18 are prevented from rotating relative to each other by a pair of screws 8, and the first and second members 17, 18 are temporarily fastened together with a gap therebetween, so that the anchor member 16 can be easily attached to the frame body 2, and furthermore, since the first member 17 has a chamfered portion 17d, the attachment work is made easier, similarly to the third embodiment.

[0033] Of course, the present invention is not limited to the above-described embodiments. For example, in the first and second embodiments, the convex portion formed on the facing piece of the frame protrudes toward the second member located inside the groove, but it can also be configured so that it protrudes toward the first member located outside the groove, in which case a recess is formed in the first member into which the convex portion fits and engages. Also, it is possible to form a convex portion on the first member or the second member, while forming a recess in the facing piece of the frame.

[0034] Next, anchor members of Reference Examples 1 to 8 will be described with reference to Figures 12 to 15. In the following description, the frame body 2 to which the anchor member is attached is the same as the frame body 2 of the first to fourth embodiments, and therefore the same reference numerals are used and description thereof will be omitted. First, anchor member 25 of Reference Example 1 is shown in Figures 12(A) and (B), anchor member 26 of Reference Example 2 is shown in Figures 12(C) and (D), anchor member 27 of Reference Example 3 is shown in Figures 13(A) and (B), anchor member 28 of Reference Example 4 is shown in Figures 13(C) and (D), and anchor member 29 of Reference Example 5 is shown in Figures 14(A) and (B), respectively. Unlike anchor members 5, 11, 16, and 19 of the first to fourth embodiments, anchor members 25 to 29 of Reference Examples 1 to 5 are formed from a single member, have fixing portions 25a to 29a fixed to the frame body side, and are configured so that both longitudinal ends of anchor members 25 to 29 are screwed to opposing piece portions 2Ab or groove side surface portions 2Aa of frame body 2 with screws 30. When the anchor member is configured to be screwed to the frame body in this way, it is possible to prevent the frame body from coming off the anchor member, but it becomes necessary to drill screw holes in the frame body such as a sash frame. 14(C) and (D) show an anchor member 31 of Reference Example 6. The anchor member 31 of Reference Example 6 has a fixing portion 32a fixed to the main body side, and is composed of a first member 32 that abuts against the opposing piece portion 2Ab of the frame body 2 from the outer side of the groove portion 2A, a second member 33 that abuts against the opposing piece portion 2Ab from the inner side of the groove portion 2A, and screws 34 that fasten the first and second members 32, 33 together, and is configured so that the opposing piece portion 2Ab is sandwiched between both longitudinal ends of the first member 32 and both longitudinal ends of the second member 33. 15(A) and (B) show an anchor member 35 of Reference Example 7. The anchor member 35 of Reference Example 7 has a fixing portion 36a that is fixed to the main body side, and is composed of a first member 36 that abuts against the opposing piece portion 2Ab of the frame body 2 from the outer side of the groove portion 2A, a second member 37 that abuts against the opposing piece portion 2Ab from the inner side of the groove portion 2A, and a screw 38 (only shown in FIG. 15(B)) that fastens the first and second members 36 and 37 together, and the second member 37 is screwed to the groove side portion 2Aa of the frame body 2 with a screw 39. Furthermore, the screw 38 that fastens the first and second members 36, 37 together passes through a screw through hole 36b formed in the first member 36 and is screwed into a screw hole 37a formed in the second member 37. In this case, the screw through hole 36b is formed as an elongated hole that is long in the groove width direction of the groove portion 2A of the frame body 2, so that the length of the entire anchor member 35 in the groove portion 2A width direction can be adjusted to correspond to the spacing between the opposing piece portions 2Ab of the frame body 2. 15(C) and (D) show the anchor member 40 of Reference Example 8. The anchor member 40 of Reference Example 8 has a fixing portion 41a that is fixed to the main body side, and is composed of a first member 41 that abuts against the opposing piece portion 2Ab of the frame body 2 from the outer side of the groove portion 2A, a second member 42 that abuts against the opposing piece portion 2Ab from the inner side of the groove portion 2A, and screws (not shown) that fasten the first and second members 41 and 42 together. The screw that fastens the first and second members 41, 42 together passes through a screw through hole 41b formed in the first member 41 and is threaded into a screw hole 42a formed in the second member 42. In this case, as in Reference Example 7, the screw through hole 41b is formed as an elongated hole that is long in the groove width direction of the groove portion 2A of the frame body 2, so that the length of the entire anchor member 40 in the groove width direction can be adjusted to correspond to the spacing between the opposing piece portions 2Ab of the frame body 2. [Industrial Applicability]

[0035] The present invention can be used in a fire prevention structure for a sliding door device. [Explanation of symbols]

[0036] 2 frame 2A Groove 2Ab opposing piece 2Ac Locking protrusion 5 Anchor member 6 First member 6b Fixed part 7 Second member 7b Locking groove 8 bis 11 Anchor member 12 Second member 12b Locking groove 16 Anchor member 17 First member 17b Fixed part 18 Second member 19 Anchor member 20 First member 20b Fixed part 21 Second member

Claims

1. When an anchor member to be fixed to the building skeleton is attached to a frame installed around an opening formed in the building skeleton, the frame is provided with a groove extending along the longitudinal direction of the frame and opening on the skeleton side, and a pair of opposing plates that are provided on the opening side of the groove and extend along the longitudinal direction of the frame and are opposed to each other at a distance, while the anchor member has a fixing portion fixed to the skeleton side and includes a first member that abuts against the pair of opposing plates from the outer side of the groove, a second member that abuts against the pair of opposing plates from the inner side of the groove, and a pair of fastening members that fasten the first and second members together so as to sandwich the pair of opposing plates between the first and second members. and wherein the second member is configured so that in a predetermined mounting position, the length of the second member in the groove width direction is longer than the gap between the pair of opposing pieces, but in a rotated position obtained by rotating the second member from the mounting position around the center of the groove width direction as an axis, the length of the second member in the groove width direction is shorter than the gap between the opposing pieces, and when in the rotated position, the second member is configured to be able to freely move in and out of the groove due to the gap between the opposing pieces, and further wherein a restricting means is provided between the opposing pieces and at least one of the first and second members, for restricting relative rotation of the anchor member with respect to the opposing pieces when the first and second members are fastened by the fastening member.

2. 2. A structure for attaching an anchor member to a frame body according to claim 1, characterized in that, when attaching the anchor member to the frame body, the first and second members are temporarily fastened in an untightened state in which relative rotation is prevented by the pair of fastening members and there is a gap between the first and second members, and in this temporarily fastened state the second member in a rotated attitude is inserted into a groove portion of the frame body and positioned within the groove, while the first member is positioned outside the groove, and with the second and first members positioned inside and outside the groove, the anchor member is rotated to an attached attitude and the second and first members are fastened together with the fastening members.

3. 3. The structure for attaching an anchor member to a frame body according to claim 1 or 2, wherein the restricting means is constituted by a convex portion formed at the tip end of the pair of opposing pieces extending along the longitudinal direction of the frame body and protruding toward the first or second member, and a concave portion formed in the first or second member into which the convex portion fits and engages.

4. 4. The structure for attaching an anchor member to a frame according to claim 3, wherein the recess formed in the first or second member is U-shaped or V-shaped.

5. When an anchor member to be fixed to the building skeleton side is attached to a frame body installed around an opening formed in the building skeleton, the frame body is provided with a groove portion extending along the longitudinal direction of the frame body and opening on the skeleton side, and a pair of opposing pieces that are provided on the opening side of the groove in a state of extending along the longitudinal direction of the frame body and opposing each other with a gap therebetween, while the anchor member has a fixing portion fixed to the skeleton side and is composed of a first member that abuts against the pair of opposing pieces from the outer side of the groove, a second member that abuts against the pair of opposing pieces from the inner side of the groove, and a pair of fastening members that fasten the first and second members together so as to sandwich the pair of opposing pieces between them, and the second member has a length in the width direction of the groove that is longer than the distance between the pair of opposing pieces in a predetermined installation position, but and a method for attaching an anchor member to a frame body, the anchor member being configured such that in a rotated position in which the anchor member is rotated about an axis at the center of the groove in the width direction, the length of the groove in the width direction is set to be shorter than the distance between the opposing pieces, and the rotated position allows the anchor member to freely enter and exit the groove due to the distance between the opposing pieces. Meanwhile, the method for attaching an anchor member to a frame body includes the steps of: a step of temporarily fastening the first and second members in an untightened state in which relative rotation is prevented by the pair of fastening members and there is a gap between the first and second members; a step of inserting the second member in the rotated position into the groove of the frame body in the temporarily fastened state so as to position it within the groove while positioning the first member outside the groove; and a step of rotating the anchor member with the second and first members positioned inside and outside the groove and fastening the second and first members, which have been placed in an attached position, with the fastening members.

6. 6. The method for attaching an anchor member to a frame body according to claim 5, further comprising providing a restricting means between the opposing piece and at least one of the first and second members, for restricting relative rotation of the anchor member with respect to the opposing piece when the first and second members are fastened by the fastening member.

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