Fixing member, structure for fixing support member to structure

Abstract

To provide a fixing member etc. which is light-weight and excellent in handleability.SOLUTION: A fixing member 1 mainly comprises a body part 3, a female screw member 5, a male screw member 7, and a bolt 15 etc. The body part 3 is formed by folding a plate-like member. A folded part 9 is formed with: a first cutout part 11; and a second cutout part 13 which is provided above the first cutout part 11 and smaller than the first cutout part 11. The female screw member 5 is inserted into the second cutout part 13 from the folded part 9 side (the front of the folded part 9). In a state that the female screw member 5 is inserted into the second cutout part 13, the male screw member 7 is inserted into the body part 3 (the folded part 9) from above the body part 3 (the folded part 9) to be threadedly engaged with the female screw member 5 at the second cutout part 13. A tip of the male screw member 7 is exposed at the first cutout part 11.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a fixing member capable of clamping and fixing an object to a structure or the like, and to a fixing structure for fixing a support member to the structure using the fixing member. [Background technology]

[0002] For example, in steel-frame construction, fixing brackets are used when attaching ceiling or wall base materials to beams or columns. As such fixing brackets, for example, a method has been proposed in which a steel plate is bent to form a U-shape, a female thread is formed in the upper frame, and the H-shaped steel and the U-shaped frame are sandwiched and fixed between a bolt screwed into the female thread and a support piece in the lower frame (Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Utility Model Registration No. 3085612 Summary of the Invention [Problem to be solved by the invention]

[0004] In the fastening fixture described in Patent Document 1, in order to screw in the bolt, it is necessary to provide a female thread on the upper frame. Therefore, the plate member constituting the fastening fixture must be at least thick enough to form a screw thread. In particular, to ensure sufficient fastening force by the bolt, the bolt and the female thread must have a screwing allowance of more than twice the thread pitch. Therefore, the plate member constituting the fastening fixture must be thicker than twice the thread pitch.

[0005] However, as mentioned above, if the fixing bracket is made of a plate member with a thickness more than twice the thread pitch, there is a problem of the weight of the fixing bracket itself increasing. In particular, when attaching ceiling or wall base materials to beams or columns, a large number of fixing brackets are required, which reduces the efficiency of transportation and construction on site.

[0006] The present invention has been made in consideration of such problems, and has an object to provide a fixing member etc. that is lightweight and easy to handle. [Means for solving the problem]

[0007] In order to achieve the above-mentioned object, the first invention is a fixing member capable of clamping and fixing an object, comprising a main body portion formed by bending a plate-shaped member, a female threaded member attached to the main body portion, and a male threaded member screwed into the female threaded member, wherein the main body portion has a bent portion on one side, and the bent portion has a first cutout portion in which a fixing portion that contacts the object is formed, and a second cutout portion that is provided above the first cutout portion and is smaller than the first cutout portion, wherein the female threaded member is inserted into the second cutout portion from the outside of the bent portion, and the male threaded member is inserted into the inside of the bent portion from above the bent portion and screwed into the female threaded member, and an end of the male threaded member is exposed to the first cutout portion and positioned opposite the fixing portion.

[0008] It is desirable that a rib be formed on an upper edge of the second cutout portion, and that the rib and the female screw member be in surface contact with each other.

[0009] A deformation retaining member capable of deforming and retaining the main body in a direction in which the opening is closed may be disposed on the opening side of the main body opposite the bent portion.

[0010] The female threaded member may be removable from the main body by extracting the male threaded member.

[0011] According to the first aspect of the present invention, the plate-shaped member is bent to form a main body, and a second cutout is formed in the main body, and the female screw member is inserted into the second cutout to attach the plate-shaped member, eliminating the need to form a female screw in the plate-shaped member. This allows the plate-shaped member to be made thinner.

[0012] Furthermore, by forming a rib on the upper edge of the second cutout portion, the female screw member and the rib can be in surface contact with each other, which makes it possible to stabilize the position of the female screw member when the male screw member is tightened.

[0013] In addition, by arranging a deformation retaining member capable of deforming the main body in the direction of closing the opening on the side of the opening opposite the bent portion, the male screw member arranged in the bent portion can be sandwiched and fixed between both sides of the main body. Therefore, by deforming the main body with the deformation retaining member after fastening the male screw member to the female screw member, it is possible to prevent the male screw member from loosening.

[0014] In addition, since the female screw member is not joined to the main body, it is possible to remove the female screw member from the main body by pulling out the male screw member. Therefore, it is possible to change the sizes of the female screw member and the male screw member by replacing them with each other depending on the application.

[0015] The second invention is a structure for fixing a support member to a structure using the fixing member of the first invention, characterized in that the support member is placed on the structure, and the structure and the support member are clamped together between the fixing portion and the end of the male screw member, thereby fixing the support member to the structure.

[0016] According to the second aspect of the present invention, the fixing member is lightweight and easy to handle, so that the support member can be easily fixed to the structure. Effect of the Invention

[0017] According to the present invention, it is possible to provide a fixing member and the like which is lightweight and has excellent handleability. [Brief description of the drawings]

[0018] [Figure 1] An exploded perspective view of the fixing member 1. [Diagram 2]Assembly perspective view of the fixing member 1 [Diagram 3] Cross-sectional view of line GG in Figure 2. [Figure 4] FIG. 2 is a diagram showing a fixing structure 30 using a fixing member 1. [Diagram 5] 1A is a front view of the fixing structure 30, and FIG. 1B is an enlarged view of part H in FIG. [Figure 6] 1A is a front view of the vicinity of the fixing portion 23, and FIG. 1B is a cross-sectional view taken along line JJ in FIG. [Figure 7] 1A is a front view of a fixing structure in which a rib 25 is provided on a fixing portion 23, and FIG. 1B is a cross-sectional view taken along line KK in FIG. [Figure 8] 6(a) and 6(b) are diagrams showing a process of fixing the male thread member 7 with a bolt 15. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] A fixing member according to an embodiment of the present invention will be described below. Fig. 1 is an exploded perspective view showing the fixing member 1, and Fig. 2 is an assembled perspective view showing the fixing member 1. Fig. 3 is a cross-sectional view taken along line GG in Fig. 2. The fixing member 1 is mainly composed of a main body 3, a female screw member 5, a male screw member 7, a bolt 15, and the like. The fixing member 1 is a member for fixing a supporting member of a ceiling or wall to a structural body such as a pillar or beam by clamping an object therebetween.

[0020] The main body 3 is formed by bending a plate-like member. More specifically, the main body 3 has a bent portion 9 on one side and is open on the other side. That is, in a plan view, the main body 3 is substantially U-shaped. The thickness of the plate-like member constituting the main body 3 is preferably no more than twice the thread pitch of the male screw member 7 described below, and more preferably no more than 1.2 times. This has a great effect on weight reduction.

[0021] The bent portion 9 is formed with a first cutout portion 11 and a second cutout portion 13 that is provided above the first cutout portion 11 and is smaller than the first cutout portion 11. A fixing portion 23 that comes into contact with an object to be fixed is formed below the first cutout portion 11. The fixing portion 23 is formed below the first cutout portion 11 with a part of the fixing portion 23 on the bent portion 9 side protruding upward.

[0022] In this embodiment, the right front side in the figure (direction C in the figure) and the side of the bent portion 9 are defined as the front of the fixed member 1, and the left rear side in the figure (direction D in the figure) and the side of the opening 19 are defined as the rear of the fixed member 1. In other words, the opening 19 side is the opposite side to the bent portion 9, and the first notch portion 11 and the second notch portion 13 are formed to a predetermined depth from the front of the main body portion 3 (the side of the bent portion 9) toward the rear.

[0023] Moreover, the upper side in the drawing (direction A in the drawing) is the top of the fixing member 1, and the lower side in the drawing (direction B in the drawing) is the bottom of the fixing member 1. That is, the up-down direction in the drawing (direction AB in the drawing) is the height direction of the fixing member 1. Moreover, the direction perpendicular to these directions (direction EF in the drawing) is the width direction of the fixing member 1.

[0024] In addition, a reinforcing rib formed by bending a plate-like member outward in the width direction is provided at a predetermined edge of the main body 3. In addition, the reinforcing rib may be formed by forming unevenness by pressing or the like at a predetermined position of the side surface of the main body 3 (a portion other than the first cutout portion 11 and the second cutout portion 13). In the illustrated example, ribs are formed by bending a plate-like member outward approximately vertically at the upper edge of the main body 3, the side edge of the opening 19, the lower edge, and a part of the first cutout portion 11 and the second cutout portion 13. In addition, a reinforcing rib is formed by a substantially L-shaped convex portion on the opening 19 side of the first cutout portion 11. In addition, the arrangement and form of the rib are not limited to the illustrated example.

[0025] The female thread member 5 is inserted into the second cutout portion 13 from the bent portion 9 side (from the front of the bent portion 9). The female thread member 5 may be a commercially available nut, or may be another thick plate material to which a female thread has been machined. However, it is desirable that at least a part of the outer shape of the female thread member 5 has a flat portion or a protrusion as a rotation stopper. In other words, the female thread member 5 has an outer shape other than a perfect circle.

[0026] The height of the second cutout portion 13 is slightly higher than the height of the female screw member 5. The width of the second cutout portion 13 (or the inner width of the bent portion 9) is narrower than the width of the female screw member 5. Therefore, when the female screw member 5 is inserted into the second cutout portion 13, the female screw member 5 comes into contact with the main body portion 3 at the rear end (deepest portion) of the second cutout portion 13 and is not inserted any further inside the main body portion 3. The depth of the second cutout portion 13 in the front-rear direction is set to an extent that the entire screw hole of the female screw member 5 can be exposed inside the bent portion 9 when the female screw member 5 is completely inserted into the second cutout portion 13 and in contact with the rear end (deepest portion) of the second cutout portion 13.

[0027] As shown in FIG. 3, with the female screw member 5 inserted into the second cutout portion 13, the male screw member 7 is inserted into the main body portion 3 (bent portion 9) from above the main body portion 3 (bent portion 9) and is screwed into the female screw member 5 at the second cutout portion 13. The male screw member 7 is, for example, a bolt. In addition, in a side view, the tip of the male screw member 7 is exposed in the first cutout portion 11. That is, in the first cutout portion 11, the fixing portion 23 and the end portion of the male screw member 7 are arranged to face each other. By tightening the male screw member 7, the gap between the male screw member 7 and the fixing portion 23 becomes narrow, so that the fixing object is sandwiched between the fixing portion 23 and the male screw member 7. The fixing structure of the fixing object will be described later.

[0028] Here, if the depth of the second cutout portion 13 in the front-rear direction is too deep, the female screw member 5 may not come into contact with the rear end of the second cutout portion 13, and may rotate when the male screw member 7 rotates. For this reason, the depth of the second cutout portion 13 in the front-rear direction must be such that when the male screw member 7 is rotated, a part of the female screw member 5 (such as a flat part or a protruding part on the outer periphery) comes into contact with the rear end of the second cutout portion 13, thereby restricting the rotation. For example, it is desirable that the depth of the second cutout portion 13 in the front-rear direction is equal to or smaller than the size of the female screw member 5. In this way, the rear end of the second cutout portion 13 functions as a rotation stopper for the female screw member 5.

[0029] When the female screw member 5 and the male screw member 7 are screwed together, the female screw member 5 and the male screw member 7 are attached to the main body 3 and will not fall off from the main body 3. For example, the female screw member 5 is surrounded by the main body 3 above, below, and behind the second cutout portion 13 (directions A, B, and D in FIG. 2), so movement in these directions is restricted and the female screw member 5 can only move forward (direction C in FIG. 2) and to both sides (directions E and F in FIG. 2) from the main body 3.

[0030] On the other hand, since the male screw member 7 is surrounded by the main body 3 on both sides (directions E and F in FIG. 2) and on the front (direction C in FIG. 2), movement in these directions is restricted and the male screw member 7 can only move upward (direction A in FIG. 2) and backward (direction D in FIG. 2) from the main body 3.

[0031] Therefore, by screwing the male screw member 7 and the female screw member 5 together, movement in the directions A, B, and D in Fig. 2 is restricted by the female screw member 5 and the main body 3, and movement in the directions C, E, and F in Fig. 2 is restricted by the male screw member 7 and the main body 3. As a result, the female screw member 5 and the male screw member 7 will not fall off the main body 3. In other words, the female screw member 5 is attached to the main body 3 by the male screw member 7.

[0032] In this way, the female screw member 5 will not fall off from the main body 3, and therefore there is no need to join the female screw member 5 to the main body 3 by welding or the like. Therefore, the female screw member 5 can be replaced by removing the male screw member 7.

[0033] For example, the female screw member 5 can be of multiple sizes as long as it can be inserted into the second cutout portion 13. Similarly, the male screw member 7 can be of multiple sizes as long as it can be inserted into the main body portion 3. For this reason, depending on the application, for example, a female screw member 5 and a male screw member 7 with small diameters can be selected for a portion that does not require a large holding force for fixing, and a female screw member 5 and a male screw member 7 with large diameters can be selected for a portion that requires a large holding force.

[0034] At the rear of the main body 3 (the side of the opening 19 opposite the bent portion 9), a hole 17 (see Figs. 1 and 2) is provided on one surface, and a female thread 21 (see Fig. 3) is formed on the other surface opposite thereto. A bolt 15 is inserted into the hole 17 from the outside of the main body 3 and screws into the other female thread 21. Therefore, by tightening the bolt 15, it is possible to tighten the opening 19 in a direction to close it. The effect of the bolt 15 will be described later.

[0035] Next, a structure for fixing a support member to a structure using a fixing member 1 will be described. FIG. 4 is a schematic diagram showing a fixing structure 30. The fixing structure 30 is a structure in which a support member 33 is fixed to a structure 31 by the fixing member 1. In the illustrated example, the structure 31 is, for example, an H-shaped steel, but the cross-sectional shape is not particularly limited, and may be, for example, a C-shape, a T-shape, an L-shape, or the like. In the illustrated example, the support member 33 has a C-shaped cross-sectional shape, but the cross-sectional shape may be any shape.

[0036] The structural body 31 is, for example, a pillar or beam of a building. The supporting member 33 is, for example, a member for attaching a ceiling material or a wall material. The supporting member 33 is disposed in a predetermined direction relative to the structural body 31. For example, as shown in the figure, the supporting members 33 may be disposed in directions perpendicular to each other and fixed by the fixing member 1 near the intersection of the supporting members 33 and the structural body 31, or the supporting members 33 may be disposed parallel to each other and fixed by the fixing member 1 at a predetermined interval.

[0037] First, the overlapping portion of part of the structure 31 and part of the support member 33 is inserted into the first cutout portion 11 of the fixing member 1. By tightening the male screw member 7 in this state, the structure 31 and the support member 33, which are the objects to be fixed, can be sandwiched together between the end of the male screw member 7 and the fixing portion 23. In this manner, the support member 33 is fixed to the structure 31 by the fixing member 1.

[0038] Fig. 5(a) is a front view of the fixing member 1 in a state in which the structure 31 and the support member 33 are fixed, and Fig. 5(b) is an enlarged view of part H in Fig. 5(a). When the male screw member 7 is tightened, the female screw member 5 is pressed against the upper side of the second cutout portion 13. At this time, by forming a rib 24 bent outward in the width direction at the upper edge of the second cutout portion 13, the rib 24 and the female screw member 5 can be brought into surface contact. This stabilizes the position of the female screw member 5, and makes it possible to suppress loosening of the holding force due to wobbling of the female screw member 5 and the male screw member 7.

[0039] Fig. 6(a) is an enlarged view of part I in Fig. 5(a), and Fig. 6(b) is a cross-sectional view taken along line JJ in Fig. 6(a). As described above, the structure 31 and the support member 33 are overlapped, and the structure 31 and the support member 33 are collectively sandwiched between the male screw member 7 and the fixing part 23 of the main body 3. The order in which the structure 31 and the support member 33 are overlapped may be reversed.

[0040] Here, the fixing portion 23 is formed by the bent portion 9 so as to have a substantially U-shaped cross section. As described above, the thickness of the plate-like member constituting the main body 3 may be thin since there is no need for female thread processing. Therefore, the contact area between the fixing portion 23 and the object to be fixed (support member 33 in the figure) is small. As a result, by tightening the male screw member 7, the tip of the fixing portion 23 can be slightly inserted into the support member 33, thereby obtaining a higher holding force.

[0041] Fig. 7(a) is a diagram showing another embodiment in comparison with Fig. 6(a), and Fig. 7(b) is a cross-sectional view of line KK in Fig. 7(a). In the above-mentioned example, the end face of the plate-like member of the fixing portion 23 is exposed in a U-shape, but in this embodiment, ribs 25 are formed on both sides of the fixing portion 23, which are bent outward in the width direction. This increases the contact area with the support member 33, which is the object to be fixed. Although this makes it impossible to expect the fixing portion 23 to bite into the object to be fixed as described above, it can receive the object over a wider area, so that the object to be fixed can be stably sandwiched.

[0042] 8(a) is a cross-sectional view in the width direction at the position of the bolt 15. As described above, the bolt 15 is disposed on the opening 19 side of the main body 3. Since the bolt 15 does not require a large axial force, a small bolt with a small thread pitch is sufficient. Therefore, even if the plate thickness of the main body 3 is thin, the female thread 21 can be machined.

[0043] The outer diameter of the male screw member 7 is equal to or smaller than the inner width of the bent portion 9. Therefore, when the bolt 15 is loosened, a small gap is formed between the male screw member 7 and the main body 3 (or even if they come into contact, the male screw member 7 receives almost no force from the main body). Therefore, when the male screw member 7 is tightened, the main body 3 does not prevent the male screw member 7 from rotating.

[0044] 8(b) is a diagram showing the state in which the bolt 15 is tightened. As described above, when the male screw member 7 is tightened to clamp the object to be fixed together and then the bolt 15 is tightened (L in the figure), the main body 3 deforms so that the opening 19 is closed, and this state can be maintained. For example, the opening width on the opening 19 side (the distance between the opposing side surfaces of the main body 3) can be made narrower than the width of the bent portion 9.

[0045] In this way, the bolt 15 functions as a deformation retaining member that can retain the deformation of the main body 3 in a direction that closes the opening 19. Note that as long as it is possible to deform the main body 3 so that the opening 19 is closed and retain that state, the deformation retaining member may be in a form other than the bolt 15 (e.g., a clip, etc.), and the form is not particularly limited.

[0046] In this way, by tightening the bolt 15, the main body 3 is deformed in a direction in which the opposing surfaces of the main body 3 approach each other. As a result, the spacing of the main body 3 also narrows at the location of the male screw member 7, and the male screw member 7 comes into contact with the main body 3 and is sandwiched from both sides. In this way, the male screw member 7 is sandwiched by the main body 3, and friction acts as a resistance to the rotation of the male screw member 7. This provides the effect of preventing the male screw member 7 from loosening.

[0047] As described above, according to this embodiment, by attaching the female screw member 5 to the main body 3 formed by bending a plate-like member, it is not necessary to directly machine the female screw for screwing with the male screw member 7 on the main body 3. This allows the plate thickness of the main body 3 to be thin, and the weight of the main body 3 to be reduced. For example, when directly machining the female screw on the main body 3, a plate thickness of more than two pitches of the thread is required to ensure the tightening force of the male screw member 7, but in this embodiment, a plate thickness of two pitches or less of the thread of the male screw member 7 can also be applied, and therefore the weight of the fixing member 1 can be reduced.

[0048] In addition, since the female screw member 5 is not joined to the main body 3, it is possible to remove the female screw member 5 from the main body 3 by pulling out the male screw member 7. Therefore, the female screw member 5 and the male screw member 7 can be replaced as necessary. For example, by changing the sizes of the female screw member 5 and the male screw member 7 depending on the application, the main body 3 can be used for multiple applications.

[0049] Furthermore, by providing a rib 24 above the second cutout portion 13 at the contact portion with the female screw member 5, the female screw member 5 can be brought into surface contact with the main body 3 when the male screw member 7 is tightened. This stabilizes the position of the female screw member 5, making it possible to suppress rattling of the female screw member 5 and the associated loosening of the male screw member 7.

[0050] In addition, by providing a bolt 15 that can deform and hold the main body 3 in the direction of closing the opening 19, it is possible to function as a locking mechanism for the male screw member 7 after the male screw member 7 is tightened.

[0051] Although the embodiment of the present invention has been described above with reference to the attached drawings, the technical scope of the present invention is not limited to the above-described embodiment. It is clear that a person skilled in the art can think of various modifications or alterations within the scope of the technical ideas described in the claims, and it is understood that these also naturally belong to the technical scope of the present invention. [Explanation of symbols]

[0052] 1...Fixing member 3. Main body 5... Female thread member 7... Male threaded member 9....Bending section 11...First notch 13...Second notch 15………Volts 17……hole 19...Opening 21………Female thread 23……Fixed part 24, 25………Ribs 30……Fixed structure 31……Structure 33...Support member

Claims

1. A fixing member capable of clamping and fixing an object, A main body portion formed by bending a plate-like member; A female screw member attached to the main body portion; A male screw member that screws into the female screw member; Equipped with The body portion has a bent portion on one side, The bent portion has a first cutout portion in which a fixing portion that contacts an object is formed, and a second cutout portion that is provided above the first cutout portion and is smaller than the first cutout portion. The female screw member is inserted into the second cutout portion from the outside of the bent portion, The male screw member is inserted into the bent portion from above and screwed into the female screw member, A fixing member, characterized in that an end of the male screw member is exposed to the first cutout portion and is arranged to face the fixing portion.

2. 2. The fixing member according to claim 1, wherein a rib is formed on an upper edge of the second cutout portion, and the rib and the female screw member are in surface contact with each other.

3. The fixing member according to claim 1 or 2, characterized in that a deformation retaining member capable of deforming and retaining the main body portion in a direction in which the opening is closed is disposed on the opening side of the main body portion opposite the bent portion.

4. 4. The fixing member according to claim 1, wherein the female threaded member can be removed from the main body by removing the male threaded member.

5. A structure for fixing a support member to a structure using the fixing member according to any one of claims 1 to 4, A structure for fixing a support member to a structure, characterized in that a support member is placed on the structure, and the structure and the support member are clamped together between the fixing portion and the end of the male screw member, thereby fixing the support member to the structure.

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