Stopper fitting for C-shaped steel

Abstract

To provide a stopper fitting for a C-shaped steel capable of accommodating various C-shaped steels.SOLUTION: A stopper fitting for C-shaped steel has an L-shaped main body part 2 constituted by a vertical part 20 and a horizontal part 21, stopper pieces 3 provided to project inward from both side parts of the vertical part 20, and an insertion hole provided to penetrate the horizontal part 21 in the vertical direction. The stopper piece 3 is provided with locking grooves (31b1, 31c1) capable of being locked to lip parts (Ka, Kb) of the C-shaped steel K, and a pressing bolt B for pressing an upper outer peripheral surface Kc of the C-shaped steel K can be inserted into the insertion hole.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a stopper fitting for C-shaped steel.

Background Art

[0002] Generally, C-shaped steel is used as a member constituting a ceiling. When a powerful external vibration or impact such as an earthquake exceeding the compressive strength is applied to such C-shaped steel, there has been a problem that the C-shaped steel may break, and as a result, it may become impossible to constitute the ceiling.

[0003] Therefore, in order to solve such a problem, a fixing substrate (a stopper fitting for C-shaped steel) horizontally fixed so as to straddle both lip portions of C-shaped steel as shown in Patent Document 1 is known.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, the above-described stopper fitting for C-shaped steel has a problem that it cannot be used in the case of C-shaped steel that cannot be screwed because it has to be screwed when fixing to C-shaped steel.

[0006] Therefore, in view of the above problems, an object of the present invention is to provide a stopper fitting for C-shaped steel that can cope with various C-shaped steels.

Means for Solving the Problems

[0007] The object of the present invention is achieved by the following means. The reference numerals in parentheses are those of the embodiments described later, but the present invention is not limited thereto.

[0008] According to the invention of claim 1, an L-shaped main body portion (2) composed of a vertical portion (20) and a horizontal portion (21), a stopper piece (3) provided so as to project inward from both side portions (right side surface 20c, left side surface 20d) of the vertical portion (20), and an insertion hole (21a) provided so as to penetrate the horizontal portion (21) in the vertical direction, the vertical portion (20) is provided so as to extend vertically in the up-and-down direction from one end of the horizontal portion (21), the stopper piece (3) is provided at a position spaced apart from the horizontal portion (21) in the vertical up-and-down direction, and further, the stopper piece (3) has a first stopper piece (right stopper piece 30) provided so as to project in a direction parallel to the horizontal portion (21) from one side surface (right side surface 20c) of the vertical portion (20), and a second stopper piece (left stopper piece 31) provided so as to project in a direction parallel to the horizontal portion (21) from the other side surface (left side surface 20d) of the vertical portion (20), the Up end face of the first stopper piece (right stopper piece 30) is provided with a first locking groove (upper locking groove 30b1), the Down end face of the first stopper piece (right stopper piece 30) is provided with a second locking groove (lower locking groove 30c1), the Up end face of the second stopper piece (left stopper piece 31) is provided with a third locking groove (upper locking groove 31b1), the Down end face of the second stopper piece (left stopper piece 31) is provided with a fourth locking groove (lower locking groove 31c1), which is a stopper fitting (1) for C-shaped steel, when attaching the stopper fitting (1) for C-shaped steel to C-shaped steel (K), The upper locking grooves (upper locking grooves 30b1) of the first locking grooves and the third locking grooves (upper locking grooves 31b1) lock the upper lip portion (Kb) of the C-shaped steel (K), and the second locking grooves (lower locking grooves 30c1) and the fourth locking grooves (lower locking grooves 31c1) lock the lower lip portion (Ka) of the C-shaped steel (K). As a result, the horizontal portion (21) is positioned above the upper outer peripheral surface (Kc) of the C-shaped steel (K). At this time, by inserting a bolt (pressing bolt B) into the insertion hole (21a), the upper outer peripheral surface (Kc) of the C-shaped steel (K) can be pressed by the bolt (pressing bolt B). Thus, the C-shaped steel stopper fitting (1) can be attached to the C-shaped steel (K). On the other hand, when the C-shaped steel stopper fitting (1) is rotated 180°, The upper lip portion (Kb) of the C-shaped steel (K) is locked to the second locking grooves (lower locking grooves 30c1) and the fourth locking grooves (lower locking grooves 31c1), and the lower lip portion (Ka) of the C-shaped steel (K) is locked to the first locking grooves (upper locking grooves 30b1) and the third locking grooves (upper locking grooves 31b1). As a result, the horizontal portion (21) is positioned below the lower outer peripheral surface (Kd) of the C-shaped steel (K). At this time, by inserting a bolt (ceiling suspension bolt B1) into the insertion hole (21a), the lower outer peripheral surface (Kd) of the C-shaped steel (K) can be pressed by the bolt (ceiling suspension bolt B1). Thus, the C-shaped steel stopper fitting (1) can be attached to the C-shaped steel (K), which is characterized by this.

Effect of the Invention

[0010] Next, the effects of the present invention will be described with reference numerals in the drawings. Note that the reference numerals in parentheses are those of the embodiments described later, but the present invention is not limited thereto.

[0011] According to the invention according to claim 1, by engaging locking grooves (upper locking grooves 30b1, 31b1, lower locking grooves 30c1, 31c1) with the lip portions (lower lip portion Ka, upper lip portion Kb) of the C-shaped steel (K), the stopper piece (3) will be positioned within the internal space (S) of the C-shaped steel (K). As a result, even if external vibrations or impacts such as a powerful earthquake exceeding the compressive strength are applied to the C-shaped steel (K), the stopper piece (3) will inhibit the compression of the C-shaped steel (K), so that the situation where the C-shaped steel (K) breaks can be reduced. Furthermore, by inserting bolts (pressing bolt B, ceiling suspension bolt B1) into the insertion holes (21a), the upper outer peripheral surface (Kc) or the lower outer peripheral surface (Kd) of the C-shaped steel (K) can be pressed, and thereby, the C-shaped steel stopper fitting (1) can be attached and fixed to the C-shaped steel (K). Therefore, unlike the conventional method, it is not necessary to screw, so it is possible to cope with C-shaped steel that cannot be screwed.

[0012] Therefore, according to the present invention, it is possible to cope with various C-shaped steels.

[0013] Furthermore, according to the invention of claim 1, since the main body portion (2) is formed in an L shape and further an insertion hole (21a) is provided in the horizontal portion (21), if there is no use for hanging the ceiling base material, as shown in FIG. 4, the horizontal portion (21) may be positioned on the upper outer peripheral surface (Kc) side of the C-shaped steel (K) and the upper outer peripheral surface (Kc) of the C-shaped steel (K) may be pressed with the pressing bolt (B). If there is a use for hanging the ceiling base material, as shown in FIG. 5, the horizontal portion (21) may be positioned on the lower outer peripheral surface (Kd) side of the C-shaped steel (K) and the lower outer peripheral surface (Kd) of the C-shaped steel (K) may be pressed with the ceiling suspension bolt (B1).

[0014] Therefore, according to the present invention, it can also be used for the purpose of hanging the ceiling base material.

Brief Description of the Drawings

[0016]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Mode for Carrying Out the Invention

[0017] Hereinafter, an embodiment of the stopper fitting for C-shaped steel according to the present invention will be specifically described with reference to the drawings. In the following description, when indicating the up, down, left, and right directions, it refers to the up, down, left, and right as viewed from the front shown in the drawing.

[0018] <Description of Stopper Fitting for C-Shaped Steel> As shown in FIG. 1, the stopper fitting 1 for C-shaped steel according to this embodiment is formed in a substantially L shape and mainly includes a main body portion 2 and a stopper piece 3. Hereinafter, each configuration will be described in detail.

[0019] <Description of Main Body Portion> As shown in FIGS. 1 and 2(a), the main body portion 2 is formed in an L shape and includes a vertically long rectangular vertical portion 20 that extends in the vertical up-and-down direction, and a rectangular horizontal portion 21 that is bent in a direction perpendicular to the vertical portion 20 (right direction in the drawing) and integrally formed from the upper portion 20a of the vertical portion 20. As shown in FIG. 1, a pair of beads 20b1 are formed on the outer peripheral surface 20b of the vertical portion 20 to improve the surface rigidity of the vertical portion 20. Then, as shown in FIGS. 1 and 2, a pair of triangular ribs 22 are provided at the bending portion, which is the connecting portion between the vertical portion 20 and the horizontal portion 21, for reinforcement.

[0020] On the other hand, as shown in FIGS. 1 and 2(a), a circular insertion hole 21a is provided in the central portion of the horizontal portion 21 so as to penetrate in the vertical direction. The insertion hole 21a is adapted to allow a pressing bolt B (see FIG. 4) and a ceiling suspension bolt B1 (see FIG. 5), which will be described later, to pass through.

[0021] <Description of the stopper piece> As shown in FIG. 2(a), the stopper piece 3 is formed in a substantially vertically long rectangular shape in side view, and as shown in FIGS. 1 and 2, it is integrally provided so as to project inward (the right direction shown in FIGS. 1 and 2(a)) from both side surfaces of the vertical portion 20. Specifically, as shown in FIGS. 1 and 2(a), from the lower portion 20e of the vertical portion 20 to the right side surface 20c of the vertical portion 20 slightly above the center 20a, it bends in a direction perpendicular to the vertical portion 20 (the right direction shown in the figure), and the right stopper piece 30 is integrally provided so as to project. Further, as shown in FIG. 2(b), from the lower portion 20e of the vertical portion 20 to the left side surface 20d of the vertical portion 20 slightly above the center 20a, it bends in a direction perpendicular to the vertical portion 20 (the right direction shown in the figure), and the left stopper piece 31 is integrally provided so as to project. Thus, in this way, the stopper piece 3 projects integrally from both side surfaces of the vertical portion 20 in the inward direction (the right direction shown in FIGS. 1 and 2(a)).

[0022] On the other hand, as shown in FIGS. 1 and 2(a), an upper locking groove 30b1 is formed in the upper portion on the left side surface 30a side of the right stopper piece 30 so as to form a step with the apex 30b of the right stopper piece 30. And a lower locking groove 30c1 is formed in the lower portion on the left side surface 30a side of the right stopper piece 30 so as to form a step with the bottom surface 30c of the right stopper piece 30.

[0023] The left stopper piece 31 is the same as the right stopper piece 30. However, as shown in FIG. 3(a), an upper locking groove 31b1 is formed in the upper portion on the left side surface 31a side of the left stopper piece 31 so as to form a step with the apex 31b of the left stopper piece 31. And a lower locking groove 31c1 is formed in the lower portion on the left side surface 31a side of the left stopper piece 31 so as to form a step with the bottom surface 31c of the left stopper piece 31.

[0024] <Explanation of the usage example of the stopper fitting for C-shaped steel> Thus, the stopper fitting 1 for C-shaped steel configured as described above is used as follows. First, as shown in Fig. 3(a), the lower locking groove 31c1 of the left stopper piece 31 is inserted into the lower lip portion Ka of the C-shaped steel K. And at this time, although not shown in the figure, simultaneously, the lower locking groove 30c1 of the right stopper piece 30 is also inserted into the lower lip portion Ka of the C-shaped steel K.

[0025] Next, as shown in Fig. 3(b), the upper locking groove 31b1 of the left stopper piece 31 is inserted into the upper lip portion Kb of the C-shaped steel K. And at this time, although not shown in the figure, simultaneously, the upper locking groove 30b1 of the right stopper piece 30 is also inserted into the upper lip portion Kb of the C-shaped steel K. As a result, as shown in Fig. 3(b), the left stopper piece 31 is positioned within the internal space S of the C-shaped steel K. Furthermore, although not shown in Fig. 3(b), the right stopper piece 30 also comes to be positioned within the internal space S of the C-shaped steel K. Therefore, in this way, when the right stopper piece 30 and the left stopper piece 31 are positioned within the internal space S of the C-shaped steel K, the lower lip portion Ka of the C-shaped steel K is locked to the lower locking groove 30c1 of the right stopper piece 30 and the lower locking groove 31c1 of the left stopper piece 31. This can reduce the situation where the C-shaped steel breaks. Furthermore, as shown in Fig. 3(b), since the space (gap) between the lower lip portion Ka and the upper lip portion Kb of the C-shaped steel K is filled with the right stopper piece 30 (not shown in Fig. 3(b)) and the left stopper piece 31, the C-shaped steel K becomes like a side-view angle pipe, and thereby, the strength of the C-shaped steel K can be improved.

[0026] Next, as shown in FIG. 4, a pressing bolt B is screwed into the insertion hole 21a of the horizontal portion 21 shown in FIGS. 1 and 2(a), and the upper outer peripheral surface Kc of the C-shaped steel K is pressed by the tip of the pressing bolt B. As a result, without screwing as in the prior art, the C-shaped steel stopper fitting 1 can be attached and fixed to the C-shaped steel K in a state where the right stopper piece 30 and the left stopper piece 31 are located in the internal space S of the C-shaped steel K. As shown in FIG. 4, a nut N is screwed onto the pressing bolt B to fix the position of the pressing bolt B.

[0027] Therefore, according to the C-shaped steel stopper fitting 1 described above, even if an external vibration or impact such as a powerful earthquake exceeding the compressive strength is applied to the C-shaped steel K, the situation where the C-shaped steel K breaks can be reduced. Furthermore, since it is not necessary to screw as in the prior art, it becomes possible to deal with C-shaped steels that cannot be screwed.

[0028] Therefore, according to the C-shaped steel stopper fitting 1 according to the present embodiment, it is possible to deal with various C-shaped steels.

[0029] Further, according to the present embodiment, since the main body portion 2 is formed in an L shape and the insertion hole 21a is provided in the horizontal portion 21, as shown in FIG. 5, the horizontal portion 21 can be positioned on the lower outer peripheral surface Kd side of the C-shaped steel K. At this time, as shown in FIG. 5, since the C-shaped steel stopper fitting 1 is in a position rotated 180° from the position shown in FIG. 4, the upper lip portion Kb of the C-shaped steel K is locked in the lower locking groove 30c1 of the right stopper piece 30 and the lower locking groove 31c1 of the left stopper piece 31, and the upper lip portion Kb of the C-shaped steel K is locked in the upper locking groove 30b1 of the right stopper piece 30 and the upper locking groove 31b1 of the left stopper piece 31. Therefore, even in this case, since the right stopper piece 30 and the left stopper piece 31 can be positioned in the internal space S of the C-shaped steel K, the same effect as that shown in FIG. 4 can be achieved. However, in this case, as shown in FIG. 5, a ceiling suspension bolt B1 for suspending the ceiling base material is screwed into the insertion hole 21a of the horizontal portion 21 shown in FIGS. 1 and 2(a), and the lower outer peripheral surface Kd of the C-shaped steel K can be pressed by the tip of the ceiling suspension bolt B1. Thus, if the horizontal portion 21 is positioned on the lower outer peripheral surface Kd side of the C-shaped steel K and the lower outer peripheral surface Kd of the C-shaped steel K is pressed by the ceiling suspension bolt B1 in this way, it is possible to cope with various C-shaped steels, and further, it is also possible to suspend the ceiling base material.

[0030] Therefore, if there is no use for suspending the ceiling base material, as shown in FIG. 4, the horizontal portion 21 may be positioned on the upper outer peripheral surface Kc side of the C-shaped steel K and the upper outer peripheral surface Kc of the C-shaped steel K may be pressed by the pressing bolt B. If there is a use for suspending the ceiling base material, as shown in FIG. 5, the horizontal portion 21 may be positioned on the lower outer peripheral surface Kd side of the C-shaped steel K and the lower outer peripheral surface Kd of the C-shaped steel K may be pressed by the ceiling suspension bolt B1.

[0031] Thus, the C-shaped steel stopper fitting 1 according to the present embodiment can also be used for the purpose of suspending the ceiling base material.

[0032] Note that the C-shaped steel stopper fitting 1 shown in this embodiment is merely an example, and various modifications and changes are possible within the scope of the gist of the present invention described in the claims. For example, in this embodiment, an example is shown in which the lower locking groove 30c1 and the upper locking groove 30b1 are provided in the right stopper piece 30, and the lower locking groove 31c1 and the upper locking groove 31b1 are provided in the left stopper piece 31. However, either one of them may be sufficient. That is, the lower locking groove 30c1 or the upper locking groove 30b1 may be provided in the right stopper piece 30, and the lower locking groove 31c1 or the upper locking groove 31b1 may be provided in the left stopper piece 31. However, it is preferable to provide the lower locking groove 30c1 and the upper locking groove 30b1 in the right stopper piece 30, and the lower locking groove 31c1 and the upper locking groove 31b1 in the left stopper piece 31. This is because the right stopper piece 30 and the left stopper piece 31 can be easily positioned within the internal space S of the C-shaped steel K.

Explanation of Signs

[0033] 1 Stopper fitting for C-shaped steel 2 Body part 20 Vertical part 20c Right side surface 20d Left side surface 21 Horizontal part 21a Insertion hole 3 Stopper piece 30 Left stopper piece 30b1 Upper locking groove (locking groove) 30c1 Lower locking groove (locking groove) 31 Right stopper piece 31b1 Upper locking groove (locking groove) 31c1 Lower locking groove (locking groove) K C-shaped steel Kc Upper outer peripheral surface Kd Lower outer peripheral surface B Pressing bolt (bolt) B1 Ceiling suspension bolt (bolt) S Internal space

Claims

【Claim 1】 An L-shaped main body portion composed of a vertical portion and a horizontal portion, Stopper pieces provided to protrude inward from both sides of the vertical portion, An insertion hole provided to penetrate the horizontal portion in the vertical direction, and having, The vertical portion is provided to extend vertically upward and downward from one end of the horizontal portion, The stopper pieces are provided at positions spaced apart in the vertical direction from the horizontal portion, and further, The stopper pieces are, A first stopper piece provided to protrude in a direction parallel to the horizontal portion from one side surface of the vertical portion, A second stopper piece provided to protrude in a direction parallel to the horizontal portion from the other side surface of the vertical portion, and having, A first locking groove is provided on the upper end surface of the first stopper piece, A second locking groove is provided on the lower end surface of the first stopper piece, A third locking groove is provided on the upper end surface of the second stopper piece, A stopper fitting for C-shaped steel, wherein a fourth locking groove is provided on the lower end surface of the second stopper piece, and when attaching the stopper fitting for C-shaped steel to C-shaped steel, The upper lip portion of the C-shaped steel is locked in the first locking groove and the third locking groove, and the lower lip portion of the C-shaped steel is locked in the second locking groove and the fourth locking groove, so that the horizontal portion is positioned above the upper outer peripheral surface of the C-shaped steel. At this time, by inserting a bolt through the insertion hole, the upper outer peripheral surface of the C-shaped steel can be pressed by the bolt, whereby the stopper fitting for C-shaped steel can be attached to the C-shaped steel. On the other hand, when the stopper fitting for C-shaped steel is rotated 180°, The upper lip portion of the C-shaped steel is locked in the second locking groove and the fourth locking groove, and the lower lip portion of the C-shaped steel is locked in the first locking groove and the third locking groove, so that the horizontal portion is positioned below the lower outer peripheral surface of the C-shaped steel. At this time, by inserting a bolt through the insertion hole, the lower outer peripheral surface of the C-shaped steel can be pressed by the bolt, whereby the stopper fitting for C-shaped steel can be attached to the C-shaped steel. A stopper fitting for C-shaped steel. ​

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