JP3200105U - Clamp metal fitting device - Google Patents

Abstract

Provided is a clamp fitting device capable of improving shear strength economically and easily. SOLUTION: First and second clamping mechanisms 13 and 14 for sandwiching support pipes 15 and 23 are interposed via first and second flat seats 11 and 12 formed on respective fixed receiving members 17 and 24, respectively. The clamp fitting device 10 is connected back to back, and the first and second plane seats are positioned at the corners of the virtual square formed by aligning the axial centers of the first and second plane seats 11 and 12, respectively. 11 and 12 are pressed to form tubular male protrusions 28 and 30 and female holes 29 and 31 alternately, and the male protrusions 28 and 30 are closely fitted into the female holes 31 and 29. The first and second clamping mechanisms 13 and 14 are connected by using a pin member 32 inserted through the male protrusions 28 and 30. [Selection] Figure 1

Description

  The present invention relates to a clamp fitting device that is used in a construction site or the like to connect crossing parts such as support pipes that support a scaffold plate, or to connect two support pipes.

In general, an assembly scaffold used in a construction site or the like is assembled by vertically and horizontally connecting support pipes constituting columns, beams, and the like with a clamp fitting device (see, for example, Patent Document 1).
As shown in FIG. 8, the conventional clamp fitting device 70 includes first and second clamp mechanisms 73 and 74 that sandwich the support pipes 71 and 72, respectively. 74 are connected by four rivets 77 with the respective plane seats 75 and 76 back to back.

The first clamp mechanism 73 (the same applies to the second clamp mechanism 74) includes a fixed receiving member 79 having a semicircular arc-shaped recess 78 into which the support pipe 71 is fitted, and a pin 80 at the base of the fixed receiving member 79. And a movable receiving member 82 having a semicircular arc-shaped concave portion 81 that is rotatably connected to the movable receiving member 82, and a bolt 83 and a nut 84 that connect the movable receiving member 82 and the fixed receiving member 79. The base of the bolt 83 is connected to the tip of the fixed receiving member 79 via a pin 85 so as to be rotatable.
Moreover, the upper part of FIG. 8 shows the rivet hole 86 formed in each plane seat 75,76.

JP 2004-27781 A

However, the conventional clamp fitting device 70 has the following problems.
The clamp fitting device 70 is configured such that four rivets 77 receive a shear load applied to the first and second clamp mechanisms 73 and 74. For this reason, in order to further increase the shear strength of the clamp fitting device 70, it is necessary to increase the diameter of the rivet 77. For example, a plurality of types of rivets must be held depending on the application of the clamp fitting device. It is an economy.
Even if the diameter of the rivet is increased, it is necessary to dispose adjacent rivets with a gap in order to squeeze and crimp the head of the rivet. There was a problem that led to

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a clamp fitting device that can improve the shear strength economically and easily.

A clamp fitting device according to the present invention that meets the above-described object is provided with a fixed receiving member having a first concave portion on the inner side that is aligned with an outer surface of a support pipe, and a first pivotable to a base end portion of the fixed receiving member. A nut receiving seat is formed at the tip, and a movable receiving member having a second recess inside that matches the outer surface of the support pipe, and a tip of the fixed receiving member A mounting bolt that is pivotally mounted via a second pin, a tip portion of which is mounted on the nut receiving seat, and the supporting pipe is fastened by the fixed receiving member and the movable receiving member by a screwed nut. In the clamp fitting device, wherein the first and second clamp mechanisms each including the above are connected back to back via the first and second flat seats formed on the respective fixed receiving members,
Tubular male projections and female holes are formed by pressing the first and second plane seats at the corners of virtual squares formed in alignment with the first and second plane seats, respectively. Are formed alternately, and the male projections formed on the first plane seat closely fit into the female holes formed on the second plane seat, and are formed on the second plane seat. The formed male projection is closely fitted into the female hole formed in the first plane seat, and further, a pin material for inserting the first and second clamp mechanisms into the male projection. Are connected.

  In the clamp fitting device according to the present invention, it is preferable that the pin material is a rivet and the diameter thereof is 6 mm.

  In the clamp fitting device according to the present invention, it is preferable that the protruding height of the male protrusion is 1 to 1.1 times the thickness of the first and second plane seats.

In the clamp fitting device according to the present invention, the first clamp mechanism and the second clamp mechanism are connected, and the tubular male protrusions formed on the first and second plane seats are closely fitted into the female holes. Since the pin material inserted into the male protrusion is used, the shear load applied to the first and second clamp mechanisms can be received by the pin material and the male protrusion. Thereby, compared with the case where the 1st, 2nd clamp mechanism is connected only with a pin material, shear strength can be raised.
Therefore, it is possible to provide a clamp fitting device that can improve the shear strength economically and easily.

  In particular, when a rivet having a diameter of 6 mm is used as the pin material, a rivet of a type that is normally used can be applied to the connection of the first and second clamping mechanisms, which is economical.

It is a front view of the clamp metal fitting device concerning one embodiment of the present invention. It is a top view of the clamp metal fitting device. It is a perspective view which shows the state which connected the stationary receiving member of each clamp mechanism of the clamp metal fittings device. (A), (B) is a top view of the fixed receiving member of each said clamp mechanism, (C) is a perspective view. (A)-(C) are explanatory drawings of the attachment method of the 1st, 2nd plane seat of the clamp metal fittings device. (A), (B) is explanatory drawing of the connection method of the fixed receiving member of the clamp metal fitting apparatus which concerns on a comparative example, respectively. It is sectional drawing which shows the connection state of the fixed receiving member. It is a front view of the clamp metal fitting device concerning a conventional example.

Next, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention.
As shown in FIGS. 1 to 5, a clamp fitting device 10 according to an embodiment of the present invention is made of a steel material (for example, ordinary steel, carbon steel, high-tensile steel), and each of the first and second components. The first and second clamping mechanisms 13 and 14 are connected to each other through the plane seats 11 and 12 back to back (the first and second plane seats 11 and 12 face each other), and are economical. In addition, the shear strength can be easily improved. The second clamp mechanism 14 has substantially the same configuration as that of the first clamp mechanism 13 and will be described below in detail.

As shown in FIGS. 1 to 4, the first clamping mechanism 13 includes a fixed receiving member 17 having a first recess 16 on the inner side that is aligned with the outer surface of the support pipe 15, and a base of the fixed receiving member 17. A base end portion is connected to the end portion via a first pin 18 so as to be rotatable, and a nut receiving seat 20 having a U-shaped opening portion 19 is formed at the front end portion. And a movable receiving member 22 having a second recess 21 on the inside.
Further, the second clamp mechanism 14 also includes a fixed receiving member 24 having a first concave portion 16 on the inner side that is aligned with the outer surface of the support pipe 23, and the fixed receiving member 24 via the first pin 18. The movable receiving member 22 which has the 2nd recessed part 21 which an edge part is connected and corresponds to the outer surface of the support pipe 23 inside is provided.

As shown in FIGS. 1 and 2, the first clamp mechanism 13 is further attached to the distal end portion of the fixed receiving member 17 via a second pin 25 so as to be rotatable, and the tip portion thereof is a nut receiving seat. A mounting bolt 27 is provided for fastening the support pipe 15 by a fixed receiving member 17 and a movable receiving member 22 by a nut 26 which is attached to the screw 20 and screwed together.
Further, the second clamp mechanism 14 is also attached to the distal end portion of the fixed receiving member 24 through the second pin 25 so as to be freely rotatable, and the fixed receiving member 24 and the movable receiving member 22 by a nut 26 which is screwed together. A mounting bolt 27 for fastening the support pipe 23 is provided.

As shown in FIGS. 1 to 5, the first and second clamping mechanisms 13 and 14 are tubular (cylindrical) male shapes formed on a first flat seat 11 provided on a fixed receiving member 17. The protrusion 28 and the female hole 29, the tubular (tubular) male protrusion 30 and the female hole 31 formed in the second plane seat 12 provided in the fixed receiving member 24, and the male protrusions 28, 30 A plurality of (here, four) rivets (an example of pin members) 32 to be inserted are connected back to back. 5A is a diagram in which the first and second plane seats 11 and 12 are arranged to face each other and viewed from the top (viewed from the first plane seat 11 side), and FIG. (C) has shown the RR 'arrow sectional drawing of FIG. 5 (A).
This will be described in detail below.

As shown in FIGS. 4A to 4C and FIG. 5A, the first and second plane seats (referred to as plane portions) 11 and 12 are squares (may be rectangular). A virtual square S is formed in the center with the same axis. Male projections 28 and female holes 29 are alternately formed at the corners of the virtual square S formed at the center of the first plane seat 11, and the virtual plane formed at the center of the second plane seat 12. Male projections 30 and female holes 31 are alternately formed at the corners of the square S.
In addition, one side of the square which is the 1st, 2nd plane seats 11 and 12 is about 45 mm (42-48 mm is good), and one side of the virtual square S formed in this is about 20 mm (18-23 mm). Is good).

Specifically, the male protrusion 28 and the female hole 29 are respectively formed at diagonally diagonal positions (corner positions) of the virtual square S of the first plane seat 11, and the male protrusion 30 and the female hole 31 are respectively It is formed at an oblique diagonal position of the virtual square S of the second plane seat 12.
The positions where the male projections 28 and female holes 29 are formed in the first plane seat 11 and the positions where the male projections 30 and female holes 31 are formed in the second plane seat 12 are shown in FIGS. As shown in C), the positions are reversed. That is, when the first plane seat 11 and the second plane seat 12 are arranged to face each other, the male projection 28 is inserted into the female hole 31 and the male projection 30 is inserted into the female hole 29 at positions where they can be fitted. Is formed.

As shown in FIGS. 5B and 5C, the male projection 28 of the first plane seat 11 is inserted into the female hole 31 of the second plane seat 12, and the male projection 30 of the second plane seat 12 is installed. Each female hole 29 of the first plane seat 11 is closely fitted (closely fitted), and, as shown in FIGS. 1 and 2, rivets 32 are inserted into the male protrusions 28 and 30 to crush their heads. Thereby, the connection state of the 1st clamp mechanism 13 and the 2nd clamp mechanism 14 is maintained.
At this time, by setting the formation positions of the male projections 28 and 30 and the female holes 29 and 31 to the above-described positions, the support pipe 15 supported by the first clamp mechanism 13 as shown in FIG. And the support pipe 23 supported by the second clamp mechanism 14 can be orthogonal to each other.

The above-described male projection 28 (same for the male projection 30) receives the shear load applied to the first and second clamping mechanisms 13 and 14 together with the rivet 32.
For this reason, as shown in FIGS. 5B and 5C, the outer peripheral surface 33 of the male projection 28 is in contact with the inner peripheral surface 34 of the female hole 31 or slightly (for example, about 1 mm or less). It is preferable to set the outer diameter of the male projection 28 and the inner diameter of the female hole 31 so as to have a clearance.
Further, as shown in FIG. 5B, the protrusion height H of the male protrusion 28 is approximately the same as the thickness T of the second plane seat 12, specifically, 1 times the thickness T (= T). It is preferable to set it to 1.1 times or less. Similarly, the protrusion height H of the male protrusion 30 is set to be approximately the same as the thickness T of the first plane seat 11, specifically, 1 times (= T) or more and 1.1 times or less of the thickness T. It is preferable.
Furthermore, the thickness (wall thickness) of the male protrusion 28 (male protrusion 30) is about 1.5 mm (a range of 1.2 to 1.8 mm is preferable). In addition, the thickness of the 1st plane seat 11 (2nd plane seat 12) is about 3-3.2 mm, for example.

Here, when a rivet that is normally used, that is, a rivet having a diameter D of 6 mm, is used as the rivet 32, the total of the cross-sectional areas of the rivet and the male protrusion (thickness: 1.5 mm) is 64 mm ² . The diameter becomes larger than a rivet having a diameter of 6 mm (cross-sectional area 28 mm ² ). The inner diameter of the male protrusion is about the same as the diameter D of the rivet.
Therefore, the shear strength of the clamp fitting device 10 can be increased as compared with the case where the first and second clamp mechanisms are connected only by rivets.
The diameter of the rivet can be changed according to the usage application of the clamp fitting device.

The above-described male protrusion 28 (similarly to the male protrusion 30) can be formed by forming a small-diameter circular hole at the center position in advance and performing punching by pressing. The processing at this time varies depending on the material, but may be hot pressing or cold pressing.
The diameter of the circular hole is determined by the length, the outer diameter, and the inner diameter of the male protrusion 28. However, since the volume of the metal does not change even when pressed, it can be easily calculated by a known method.
Further, the female hole 29 (the same applies to the female hole 31) can be formed by punching out by pressing.

Note that the male protrusion can be chamfered (for example, 0.2 to 0.5 mm) on the outer side of the tip portion, thereby facilitating the fitting operation into the female holes 29 and 31.
In addition, a conical taper portion having a gradually increasing diameter can be provided on the outer side of the female hole (that is, the side on which the male protrusion is inserted), so that the male protrusion can be inserted. Work becomes easy. This tapered portion is preferably produced simultaneously with the punching of the female hole.

  With the above configuration, the shear load applied to the first and second clamping mechanisms 13 and 14 can be received by the rivet 32 and the male projections 28 and 30, so that the shear strength can be improved more economically and easily than the conventional one. Can be planned.

Here, with reference to FIGS. 6A, 6 </ b> B, and 7, a clamp metal device 40 that is a comparative example of the clamp metal device 10 of the present invention will be described. In addition, about the structure similar to the clamp metal fitting apparatus 10, the same code | symbol is attached | subjected to the same member and detailed description is abbreviate | omitted.
The clamp fitting device 40 is connected back-to-back (first and second plane seats 41 and 42 face each other) via respective first and second plane seats (referring to plane portions) 41 and 42. The first and second clamping mechanisms 43 and 44 are provided.

The first clamp mechanism 43 includes a fixed receiving member 45 (corresponding to the fixed receiving member 17) and a movable receiving member (corresponding to the movable receiving member 22) (not shown). The second clamp mechanism 44 also includes a fixed receiving member 46 (corresponding to the fixed receiving member 24) and a movable receiving member (not shown) (corresponding to the movable receiving member 22).
The first and second clamp mechanisms 43 and 44 are tubular (tubular) male protrusions 28 and female holes 29 and pin holes 47 formed on a first flat seat 41 provided on the fixed receiving member 45. And the tubular (cylindrical) male protrusion 30 and female hole 31 and pin hole 48 formed in the second flat seat 42 provided on the fixed receiving member 46, and each male protrusion 28 and 30 and pin hole. A plurality of (four in this case) rivets 32 inserted through 47 and 48 are connected back to back.

The first and second plane seats 41 and 42 are square (may be rectangular), and virtual squares are formed in the center of the square with the same axis.
A male protrusion 28 and a female hole 29 are formed at one diagonal diagonal position of the corner of the virtual square formed at the center of the first plane seat 41, and 2 at the other diagonal diagonal position. Two pin holes 47 are formed. A male projection 30 and a female hole 31 are formed at one diagonal diagonal position of the virtual square formed at the center of the second plane seat 42, and two pins are formed at the other diagonal diagonal position. A hole 48 is formed.

  Assembling the clamp fitting 40 includes the male projection 28 of the first plane seat 41 in the female hole 31 of the second plane seat 42 and the male projection 30 of the second plane seat 42 in the first plane seat 41. The female holes 29 are closely fitted to each other. Then, the rivets 32 are inserted into the male protrusions 28 and 30 and the pin holes 47 and 48, respectively, and the heads are crushed, thereby connecting the first clamp mechanism 43 and the second clamp mechanism 44 to each other. Can be maintained.

The clamp fitting device 10 of the present invention does not use the pin holes 47 and 48 as in the above-described clamp fitting device 40, and the two pairs of male protrusions 28 and female holes 29, and the two pairs of male protrusions 30 and female. Since the connection state between the first clamp mechanism 13 and the second clamp mechanism 14 is maintained using the hole 31, the shear strength can be improved as compared with the conventional case.
However, like the clamp fitting device 40, the first clamp mechanism 43 and the second clamp mechanism are formed using a pair of male protrusions 28 and female holes 29 and a pair of male protrusions 30 and female holes 31. When the connection state with 44 is maintained, the shear strength as high as that of the clamp fitting device 10 cannot be obtained, but the shear strength can be improved as compared with the case where all are constituted by pin holes.

The present invention has been described above with reference to the embodiment. However, the present invention is not limited to the configuration described in the above-described embodiment, and is described in the claims of the utility model registration. Other embodiments and modifications conceivable within the scope of the matter are also included. For example, a case where the clamp fitting device of the present invention is configured by combining some or all of the above-described embodiments and modifications is also included in the scope of the right of the present invention.
In the above-described embodiment, the first and second clamp mechanisms are configured to fix the support pipes having the same diameter. However, the first and second clamp mechanisms may sandwich the support pipes having different diameters. .
Moreover, in the said embodiment, although the formation position of the male processus | protrusion and the female hole was set so that the support pipe supported by the 1st, 2nd clamp mechanism might orthogonally cross, these formation positions are changed. Thus, the support pipes supported by the first and second clamp mechanisms can be parallel.

10: Clamp metal fitting device, 11: 1st plane seat, 12: 2nd plane seat, 13: 1st clamp mechanism, 14: 2nd clamp mechanism, 15: Support pipe, 16: 1st recessed part, 17: fixed receiving member, 18: first pin, 19: opening, 20: nut receiving seat, 21: second recess, 22: movable receiving member, 23: support pipe, 24: fixed receiving member, 25: Second pin, 26: nut, 27: mounting bolt, 28: male projection, 29: female hole, 30: male projection, 31: female hole, 32: rivet (pin material), 33: outer peripheral surface, 34 : Inner peripheral surface, 40: clamp fitting device, 41: first plane seat, 42: second plane seat, 43: first clamp mechanism, 44: second clamp mechanism, 45, 46: fixed receiving member , 47, 48: Pin holes

Claims (3)

A fixed receiving member having a first concave portion on the inner side that matches the outer surface of the support pipe, and a base end portion of the fixed receiving member that is pivotally connected via a first pin. A receiving seat is formed, and a movable receiving member having a second concave portion that coincides with the outer side surface of the support pipe is attached to the front end portion of the fixed receiving member via a second pin. The first and second clamping mechanisms each having a tip portion mounted on the nut receiving seat and provided with a fixed receiving member and a mounting bolt for fastening the support pipe by the movable receiving member by a nut to be screwed together. In the clamp fitting device connected back to back via the first and second plane seats formed on each of the fixed receiving members,
Tubular male projections and female holes are formed by pressing the first and second plane seats at the corners of virtual squares formed in alignment with the first and second plane seats, respectively. Are formed alternately, and the male projections formed on the first plane seat closely fit into the female holes formed on the second plane seat, and are formed on the second plane seat. The formed male projection is closely fitted into the female hole formed in the first plane seat, and further, a pin material for inserting the first and second clamp mechanisms into the male projection. The clamp metal fitting device characterized by connecting using.   2. The clamp fitting apparatus according to claim 1, wherein the pin material is a rivet and has a diameter of 6 mm.   The clamp fitting device according to claim 1 or 2, wherein a protruding height of the male protrusion is not less than 1 times and not more than 1.1 times the thickness of the first and second plane seats. Bracket device.

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