Bolt connector

Abstract

To provide a bolt connector that can be used in various places.SOLUTION: The bolt connector includes an L-shaped main body 4 composed of a vertical section 2 and a horizontal section 3. The vertical section 2 is provided with a left screw hole 22a and a right screw hole 22b, and the horizontal section 3 is provided with a bolt insertion hole 3a. A narrow plate section 30 is provided between the vertical section 2 and the horizontal section 3 to enable the horizontal section 3 to be bent at a desired angle relative to the vertical section 2. This allows a product to be used simply by fastening the vertical section 2 to the desired location with a screw, eliminating the need for a hook to be attached to the desired location unlike a conventional one.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a bolted connection. [Background technology]

[0002] A known example of a conventional bolt connecting fitting is that described in Patent Document 1. The invention described in Patent Document 1 is such that a fitting body is composed of a lower plate and an upper plate extending in a generally L-shape relative to the lower plate, and on the lower plate, a generally U-shaped fitting portion for fitting onto a roof frame member is formed by folding back the upper end of the upper plate, a screw hole for a ceiling suspension bolt is formed in the lower plate, and a narrow plate portion is provided between the lower and upper plate portions to enable the lower plate portion to be bent at a required angle relative to the upper plate portion. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 4714387 Summary of the Invention [Problem to be solved by the invention]

[0004] The bolt connecting fittings described above can be quickly and easily attached to roof frame members, improving the efficiency of connecting ceiling suspension bolts and being adaptable to any roof slope. However, there is a problem in that the locations where they can be used are limited because they require a location to hook the approximately U-shaped hook fitting.

[0005] In view of the above problems, the present invention has an object to provide a bolted connector that can be used in a variety of locations. [Means for solving the problem]

[0006] The above object of the present invention can be achieved by the following means: Note that the parentheses indicate reference symbols of embodiments to be described later, but the present invention is not limited to these.

[0007] According to the invention of claim 1, an L-shaped main body (4) composed of a vertical part (2) and a horizontal part (3), Screw holes (left screw hole 22a, right screw hole 22b) provided in the vertical portion (2), a bolt insertion hole (3a) provided in the horizontal portion (3); It is characterized by having a narrow plate width portion (30) provided between the vertical portion (2) and the horizontal portion (3) for enabling the horizontal portion (3) to be bent at a desired angle relative to the vertical portion (2).

[0008] According to the invention of claim 2, in the bolt connecting fitting (1) of claim 1, when bolts (hanging bolts B1 to B3) are inserted into the bolt insertion holes (3a) and the vertical portion (2) is fixed at a predetermined position using the screw holes (left screw hole 22a, right screw hole 22b), When changing the position of the bolts (hanging bolts B1 to B3) to the desired position, the bolts (hanging bolts B1 to B3) can be tilted in a predetermined direction, so that the horizontal portion (3) can be bent at a predetermined angle relative to the vertical portion, thereby making it possible to fix the bolts (hanging bolts B1 to B3) at the desired position.

[0009] According to the invention of claim 3, in the bolt connection (1) of claim 1 or 2, a reinforcing bead (21) is provided in the center of the vertical portion (2), The vertical portion (2) is characterized in that the screw holes (left screw hole 22a, right screw hole 22b) are provided on both side surfaces (left side surface 20a, right side surface 20b). [Effects of the Invention]

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

[0011] According to the invention of claim 1, the vertical part (2) can be simply screwed to the desired location for use, eliminating the need for a hook to be attached to the desired location as in the past.

[0012] Therefore, the present invention can be used in a variety of places.

[0013] According to the invention of claim 2, the installation work becomes extremely easy.

[0014] According to the invention of claim 3, the strength of the vertical part (2) can be improved and then screwed to the desired location, thereby improving the load-bearing capacity of the bolt connecting fitting (1). [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a perspective view of a bolt connection according to an embodiment of the present invention. [Figure 2] FIG. 2 is a front view of the bolt connection according to the embodiment. [Figure 3] 10 is a side view illustrating a method for attaching the bolt connecting fitting according to the embodiment when a C-shaped steel beam used as a base material for a ceiling or the like is tilted. FIG. [Figure 4] 1A and 1B are side views illustrating a method for attaching the bolt connecting fittings according to the embodiment to an L-shaped steel beam used as a base material for a ceiling or the like, where FIG. 1A shows a state in which the L-shaped steel beam is tilted, and FIG. 1B shows a state in which the L-shaped steel beam is not tilted. [Figure 5] 1A and 1B are side views illustrating a method for attaching the bolt connecting fittings according to the embodiment to an H-shaped steel beam used as a base material for a ceiling or the like, where FIG. 1A shows a state in which the H-shaped steel beam is tilted, and FIG. 1B shows a state in which the H-shaped steel beam is not tilted. DETAILED DESCRIPTION OF THE INVENTION

[0016] An embodiment of a bolt connection according to the present invention will now be described in detail with reference to the drawings. In the following description, when referring to directions such as up, down, left, and right, they refer to directions as viewed from the front of the illustration.

[0017] <Explanation of bolted connectors> 1, the bolt connection 1 according to this embodiment includes an L-shaped main body 4, which is mainly composed of a vertical portion 2 and a horizontal portion 3. The vertical portion 2 and the horizontal portion 3 will be described in detail below.

[0018] <Explanation of the vertical section> As shown in Fig. 2, the vertical section 2 has a main body 20 in the shape of a horizontally elongated rectangle. This main body 20 has a pair of reinforcing beads 21 provided in the center, as shown in Fig. 2. Also, as shown in Fig. 2, a left screw hole 22a is provided on the left side surface 20a of the main body 20 so as to penetrate in the front-to-rear direction as shown in Fig. 1, and a right screw hole 22b is provided on the right side surface 20b of the main body 20 so as to penetrate in the front-to-rear direction as shown in Fig. 1.

[0019] Furthermore, as shown in FIG. 2, a connecting portion 23 having a horizontally elongated rectangular shape and narrower in width than the main body portion 20 is integrally provided on the lower surface 20c of the main body portion 20.

[0020] <Explanation of horizontal section> 1, the horizontal section 3 is formed in a rectangular shape, and a bolt insertion hole 3a is provided at approximately the center thereof so as to penetrate in the vertical direction. This bolt insertion hole 3a is formed with a thread groove so that a suspension bolt, which will be described later, can be screwed into it.

[0021] Meanwhile, as shown in Fig. 1, a narrow plate portion 30 having a horizontally elongated rectangular shape and a left-right width narrower than that of the horizontal portion 3 is integrally provided on the rear end surface 3b of the horizontal portion 3. This narrow plate portion 30 enables the horizontal portion 3 to bend at a desired angle relative to the vertical portion 2, and as shown in Fig. 1, is integrally connected to the connecting portion 23. Also, as shown in Fig. 1, a pair of reinforcing ribs 23a are provided spaced apart at the intersection K between the connecting portion 23 and the narrow plate portion 30. The reinforcing ribs 23a are formed so that the horizontal portion 3 can be bent accurately from the narrow plate portion 30.

[0022] <Explanation of examples of bolted connectors use> Thus, the bolt connector 1 configured as described above is used, for example, as follows.

[0023] First, a method for attaching the bolt connection device 1 to a C-shaped steel K1 used as a base material for a ceiling or the like, as shown in FIG. 3, will be described. The C-shaped steel K1 shown in FIG. 3 is tilted leftward at a predetermined angle (e.g., 35 degrees) with respect to a horizontal plane H. To attach the bolt connection device 1 to such a C-shaped steel K1, first, as shown in FIG. 3, the upper end of a suspension bolt B1 is screwed into the bolt insertion hole 3a (see FIG. 1) provided in the horizontal portion 3 of the L-shaped main body 4 (bolt connection device 1), as shown in FIG. 3, as indicated by the imaginary line. Then, in this state, screws N1 shown in FIG. 3 are inserted into the left screw hole 22a (see FIG. 2) and the right screw hole 22b (see FIG. 2) provided in the vertical portion 2 of the bolt connection device 1, thereby attaching and fixing the vertical portion 2 to the lower lip portion K1a of the C-shaped steel K1. In this case, the suspension bolt B1 is tilted leftward at a predetermined angle (e.g., 35 degrees) with respect to the horizontal plane H, just like the C-shaped steel K1 shown in FIG. 3.

[0024] To position the suspension bolt B1 vertically, grasp the lower end of the suspension bolt B1 (see phantom lines) shown in FIG. 3 and tilt it to the left, bending the horizontal portion 3 to the horizontal position shown by the solid line in FIG. 3. When the lower end of the suspension bolt B1 is grasped and tilted, a large bending moment acts on the bolt connector 1 (main body 4) due to the lever action, causing bending. This bending moment reaches its maximum at the narrow plate portion 30 (see FIG. 1), resulting in a maximum bending stress at this narrow plate portion 30 (see FIG. 1). When this bending stress exceeds its elastic limit, the horizontal portion 3 bends relative to the vertical portion 2 at this narrow plate portion 30 (see FIG. 1), bending horizontally as shown by the solid line in FIG. 3. This positions the suspension bolt B1 vertically.

[0025] Next, a method for attaching the bolt connection device 1 to an L-shaped steel K2 used as a base material for a ceiling or the like, as shown in Fig. 4, will be described. The L-shaped steel K2 shown in Fig. 4(a) is tilted rightward at a predetermined angle (e.g., 30 degrees) with respect to a horizontal plane H. To attach the bolt connection device 1 to such an L-shaped steel K2, first, as shown in Fig. 4(a), the upper end of the suspension bolt B2 is screwed, as indicated by the imaginary line, into the bolt insertion hole 3a (see Fig. 1) provided in the horizontal portion 3 of the L-shaped main body 4 (bolt connection device 1). Then, in this state, screws N2 shown in Fig. 4(a) are inserted into the left screw hole 22a (see Fig. 2) and the right screw hole 22b (see Fig. 2) provided in the vertical portion 2 of the bolt connection device 1, thereby attaching and fixing the vertical portion 2 to the lower side of the right side surface K2a of the L-shaped steel K2. At this time, the suspension bolt B2 is inclined rightward at a predetermined angle (for example, 30 degrees) with respect to the horizontal plane H, similar to the L-shaped steel K2 shown in FIG. 4(a).

[0026] To position the suspension bolt B2 vertically, grasp the lower end of the suspension bolt B2 (see phantom lines) shown in FIG. 4(a) and tilt it to the right, bending the horizontal portion 3 to the horizontal position indicated by the solid line in FIG. 4(a). When the lower end of the suspension bolt B2 is grasped and tilted, a large bending moment acts on the bolt connector 1 (main body 4) due to the lever action, causing bending. This bending moment reaches its maximum at the narrow plate portion 30 (see FIG. 1), resulting in a maximum bending stress at this narrow plate portion 30 (see FIG. 1). When this bending stress exceeds its elastic limit, the horizontal portion 3 bends relative to the vertical portion 2 at this narrow plate portion 30 (see FIG. 1), bending horizontally as indicated by the solid line in FIG. 4(a). This positions the suspension bolt B2 vertically.

[0027] On the other hand, as shown in Fig. 4(b), when the L-shaped steel K2 is not tilted, the upper end of the suspension bolt B2 is screwed into the bolt insertion hole 3a (see Fig. 1) provided in the horizontal portion 3 of the L-shaped main body 4 (bolt connecting device 1). Then, in this state, the screws N2 shown in Fig. 4(b) are inserted into the left screw hole 22a (see Fig. 2) and the right screw hole 22b (see Fig. 2) provided in the vertical portion 2 of the bolt connecting device 1 to attach and fix the vertical portion 2 to the lower side of the right side surface K2a of the L-shaped steel K2. As a result, the suspension bolt B2 is fixed in a vertical position, eliminating the need to tilt the suspension bolt B2.

[0028] Next, a method for attaching the bolt connection device 1 to an H-shaped steel K3 used as a base material for a ceiling or the like, as shown in Fig. 5, will be described. The H-shaped steel K3 shown in Fig. 4(a) is tilted leftward at a predetermined angle (e.g., 35 degrees) with respect to the horizontal plane H. To attach the bolt connection device 1 to such an H-shaped steel K3, first, as shown in Fig. 5(a), the upper end of the suspension bolt B3 is screwed, as indicated by the imaginary line, into the bolt insertion hole 3a (see Fig. 1) provided in the horizontal portion 3 of the L-shaped main body 4 (bolt connection device 1). Then, in this state, screws N3 shown in Fig. 5(a) are inserted into the left screw hole 22a (see Fig. 2) and the right screw hole 22b (see Fig. 2) provided in the vertical portion 2 of the bolt connection device 1, thereby attaching and fixing the vertical portion 2 to the right side surface 3a1 of the lower flange piece K3a of the H-shaped steel K3. At this time, the suspension bolt B3 is inclined leftward at a predetermined angle (for example, 35 degrees) with respect to the horizontal plane H, similar to the H-shaped steel K3 shown in FIG. 5(a).

[0029] To position the suspension bolt B3 vertically, grasp the lower end of the suspension bolt B3 (see phantom lines) shown in FIG. 5(a) and tilt it to the left, bending the horizontal portion 3 to the horizontal position shown by the solid line in FIG. 5(a). When the lower end of the suspension bolt B3 is grasped and tilted, a large bending moment acts on the bolt connector 1 due to the lever action, causing bending. This bending moment reaches its maximum at the narrow plate portion 30 (see FIG. 1), resulting in a maximum bending stress at this narrow plate portion 30 (see FIG. 1). When this bending stress exceeds its elastic limit, the horizontal portion 3 bends relative to the vertical portion 2 at this narrow plate portion 30 (see FIG. 1), bending horizontally as shown by the solid line in FIG. 5(a). This positions the suspension bolt B3 vertically.

[0030] On the other hand, as shown in Fig. 5(b), when the H-shaped steel K3 is not tilted, the upper end of the suspension bolt B3 is screwed into the bolt insertion hole 3a (see Fig. 1) provided in the horizontal portion 3 of the L-shaped main body 4 (bolt connecting device 1). Then, in this state, the screw N3 shown in Fig. 5(b) is inserted into the left screw hole 22a (see Fig. 2) and the right screw hole 22b (see Fig. 2) provided in the vertical portion 2 of the bolt connecting device 1 to attach and fix the vertical portion 2 to the right side surface 3a1 of the lower flange piece K3a of the H-shaped steel K3. This fixes the suspension bolt B3 in a vertical position, eliminating the need to tilt the suspension bolt B3.

[0031] Therefore, as has been explained in detail above, according to this embodiment, the vertical portion 2 can be simply screwed to the desired location, eliminating the need for a hook to be attached to the desired location as in the past. Therefore, according to this embodiment, the device can be used in a variety of locations.

[0032] Furthermore, according to this embodiment, if you want to change the positions of the hanging bolts B1 to B3 after fastening the vertical section 2 with screws to the desired location, you can tilt the positions of the hanging bolts B1 to B3 in the desired direction, and then bend the horizontal section 3 at the desired angle relative to the vertical section 2, thereby fixing the hanging bolts B1 to B3 in the desired position (vertical position).This makes the installation process very easy.

[0033] <Description of Modifications> The bolt connection 1 shown in this embodiment is merely an example, and various modifications and variations are possible within the scope of the gist of the present invention as defined in the claims. For example, in this embodiment, a pair of reinforcing beads 21 is provided in the center of the vertical portion 2, and a left screw hole 22a is provided on the left side surface 20a and a right screw hole 22b is provided on the right side surface 20b. However, since it is sufficient to screw the vertical portion 2 to the desired location, only screw holes may be provided. However, as shown in this embodiment, it is preferable to provide a pair of reinforcing beads 21 in the center of the vertical portion 2, a left screw hole 22a on the left side surface 20a, and a right screw hole 22b on the right side surface 20b. This improves the strength of the vertical portion 2 before it can be screwed to the desired location, thereby improving the load-bearing capacity of the bolt connection 1. [Explanation of symbols]

[0034] 1 bolted connector 2 Vertical section 20a left side 20b Right side 21 Reinforcing bead 22a Left screw hole (screw hole) 22b Right screw hole (screw hole) 3 Horizontal part 3a Bolt insertion hole 30 Narrow plate width part 4 Main body B1~B3 Hanging bolts (bolts)

Claims

1. an L-shaped main body portion composed of a vertical portion and a horizontal portion; a screw hole provided in the vertical portion; a bolt insertion hole provided in the horizontal portion; a narrow plate portion provided between the vertical portion and the horizontal portion, for enabling the horizontal portion to be bent at a desired angle relative to the vertical portion.

2. When a bolt is inserted into the bolt insertion hole and the vertical portion is fixed at a predetermined position using the screw hole, 2. A bolt connection fitting according to claim 1, wherein when the position of the bolt is changed to a desired position, the horizontal portion can be bent at a predetermined angle relative to the vertical portion by tilting the bolt in a predetermined direction, thereby fixing the bolt in the desired position.

3. A reinforcing bead is provided at the center of the vertical portion, 3. A bolt connecting fitting according to claim 1, wherein the screw holes are provided on both side surfaces of the vertical portion.

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