Single Pipe Clamp

Abstract

To provide a single pipe clamp which allows an operator to loosen or tighten a nut by hand. [Solution] The single pipe clamp 10 is a clamp that can be attached to a cylindrical steel pipe. The single pipe clamp 10 has a main body 12 having a fastening portion at one end rotatably connected to a threaded shaft 24 and a rotating shaft at the other end, and a cover 14 having a receiving portion 40 for receiving the fastening portion 22 at one end and a rotatably connected to the rotating shaft and rotatable to cover the main body 12. The fastening portion 22 has a hexagonal nut 18 that threads onto the threaded shaft 24 and can be turned using a tool used by an operator, and a rotating operating portion 20 that is integrated with the hexagonal nut 18 so as to cover the periphery of the hexagonal nut 18 and can be turned together with the hexagonal nut 18 using the operator's hand.

Description

[Technical field]

[0001] The present invention relates to a single pipe clamp. [Background technology]

[0002] Conventionally, at construction sites, steel plates are erected as temporary fencing and a support framework is installed to support the plates. For example, Patent Document 1, which is a technology related to the present invention, describes a construction tool having a first jaw, a second jaw, a pair of threaded rods each having a handle for manual rotation, a pair of first couplers attached to the first jaw and connected to the threaded rod, and a pair of releasable couplers attached to the second jaw and connected to the threaded rod, each of the releasable couplers having a threaded portion that can engage with the threaded rod and a sliding portion that is sized to accommodate the sliding movement of the threaded rod. In one embodiment, a hand screw clamp is disclosed having a slidable portion and an actuating element movably mounted on the second jaw and engaged with both of the releasable couplers, the actuating element being movable between an engaged position where both of the threaded portions engage with their respective threaded rods and manual rotation of a handle causes the second jaw to move along the threaded rods and a disengaged position where both of the threaded portions are disengaged from their respective threaded rods and the threaded rods slide freely within the slidable portions without rotation.

[0003] Patent Document 2 discloses a clamp fitting that uses a clamp mechanism including a fixed receiving member having an internal recess that matches the outer surface of the pipe to be attached, a movable receiving member whose base end is rotatably connected to the base end of the fixed receiving member via a pin and has a nut receiving seat formed at its tip and has an internal recess that substantially matches the outer surface of the pipe, and a mounting bolt that is rotatably attached to the tip of the fixed receiving member via a pin and has its tip fitted into the nut receiving seat and fastens the pipe held by the fixed receiving member and movable receiving member with a nut that screws into it, wherein a stopper consisting of a plurality of non-threaded portions divided into several portions in the circumferential direction is provided at the tip of the mounting bolt, so that the nut will not come off the mounting bolt with a torque of 300 kg cm or less. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 7-19209 [Patent Document 2] Utility Model Registration No. 3137695 Summary of the Invention [Problem to be solved by the invention]

[0005] Generally, when using single pipe clamps, workers tighten or loosen the nuts using special tools such as wrenches, but workers cannot tighten or loosen the nuts by hand.

[0006] SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to provide a single pipe clamp that allows an operator to loosen and tighten the nut by hand. [Means for solving the problem]

[0007] The single pipe clamp of the present invention is a single pipe clamp that can be attached to a cylindrical steel pipe, and the single pipe clamp has a main body portion having a fastening portion at one end rotatably connected to a screw-type shaft portion and a rotating shaft at the other end, and a cover portion having a receiving portion at one end for receiving the fastening portion and a cover portion at the other end rotatably connected to the rotating shaft and rotatable to cover the main body portion, and the fastening portion has a nut portion that screws into the screw-type shaft portion and can be rotated using a tool used by an operator, and a rotation operating portion that is integrated with the nut portion so as to cover the periphery of the nut portion and can be rotated together with the nut portion using the operator's hand.

[0008] In the single pipe clamp according to the present invention, it is preferable that the rotation operation portion has a recess for inserting the tool around the nut portion located in the center.

[0009] In the single pipe clamp according to the present invention, it is preferable that the nut portion protrudes from a ceiling surface of the rotation operation portion. Effect of the Invention

[0010] According to this invention, the worker can loosen or tighten the nut of the single pipe clamp by hand. [Brief description of the drawings]

[0011] [Figure 1] 1 is a side view of a single pipe clamp according to an embodiment of the present invention; [Diagram 2] FIG. 2 is a cross-sectional view of FIG. [Diagram 3] 1 is a perspective view of a single pipe clamp 10 according to an embodiment of the present invention. FIG. [Figure 4] FIG. 4 is a cross-sectional view of FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Hereinafter, the embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the following, the same elements in all the drawings will be given the same reference numerals, and duplicated explanations will be omitted. In addition, in the description in the text, the reference numerals previously described will be used as necessary.

[0013] Fig. 1 is a side view of a single pipe clamp 10 according to an embodiment of the present invention. Fig. 2 is a cross-sectional view of Fig. 1. Fig. 3 is a perspective view of a single pipe clamp 10 according to an embodiment of the present invention. Fig. 4 is a cross-sectional view of Fig. 3.

[0014] First, we will explain the temporary fencing device including the single pipe to which the single pipe clamp 10 is attached, and then we will explain the single pipe clamp 10. The temporary fencing device is installed to surround the construction site to prevent unauthorized access, reduce construction noise, and provide safety measures inside and outside the site.

[0015] The temporary fencing device comprises a steel plate section erected at the construction site, and a support framework section having a plurality of single-pipe sections. The steel plate section is made of a material having appropriate strength and aesthetics. The steel plate section will be described as being made of, for example, galvanized safety steel plate, but it may of course be made of other steel plates, or may be a galvalume safety steel plate that is a combination of 55% aluminum and 43% zinc.

[0016] The support framework includes a single pipe section, which is a cylindrical steel pipe that is vertically disposed to the ground to support the steel plate section that is erected, and a single pipe section that is disposed at an angle to support the single pipe section. The single pipe section will be described as being made of a material having a suitable strength, such as plated steel or iron, but of course this can be changed as appropriate.

[0017] The single pipe clamp 10 is a clamping device that is attached to a single pipe section. The single pipe clamp 10 includes a main body 12, a cover 14, a T-bolt 16, and a fastening portion 22 having a hexagonal nut 18 and a rotating operation portion 20.

[0018] The main body 12 is provided at one end with a bolt support 32 which is a receiving portion for receiving a fastening member, and at the other end with a pin support 34 for rotatably connecting a rotating shaft. The main body 12 is further provided with a body side clamping portion 36 which is formed in a substantially L-shape so as to connect the bolt support 32 and the pin support 34.

[0019] The lid portion 14 is provided with a pin support portion 38 at one end and a nut receiving portion 40 at the other end, and is rotatable so as to cover the main body portion 12. The lid portion 14 is provided with a lid body side clamping portion 42 formed in a substantially arc shape so as to connect the pin support portion 38 and the nut receiving portion 40.

[0020] Next, a description will be given of the fastening portion 22, which is a characteristic feature of the single pipe clamp 10. The fastening portion 22 has a hexagonal nut 18 that screws into the threaded shaft portion 24 of the T-bolt 16 and can be turned using a tool used by an operator (for example, a spanner, a wrench, a ratchet wrench, or a socket wrench set), and a rotating operation portion 20 that is integrated with the hexagonal nut 18 so as to cover the periphery of the hexagonal nut 18 and can be turned together with the hexagonal nut 18 using the operator's hand.

[0021] 2 and 4, the hexagonal nut 18 is a generally cylindrical member having a hexagonal outer shape and a height (thickness) that is higher (thicker) than the rotation operation part 20. A protrusion is formed on the bottom of the hexagonal nut 18 for engaging with the bottom of the rotation operation part 20.

[0022] A helical groove is formed in the cylindrical through-hole of the hexagonal nut 18 for screwing onto the screw-engagement shaft portion 24. The hexagonal nut 18 protrudes from the ceiling surface of the rotation operation portion 20, as shown in Figs.

[0023] The hexagonal nut 18 is preferably made of a material having an appropriate strength, such as carbon steel, stainless steel, alloy steel, brass, or titanium.

[0024] 1 and 3, the rotation operation part 20 is a cylindrical member with uneven grooves formed on its outer shape, and is integrated with the hexagonal nut 18 provided in the through hole. As shown in Figs. 1 to 4, the rotation operation part 20 has a recess formed around the head of the hexagonal nut 18 located in the center for inserting a tool (for example, a spanner, a wrench, a ratchet wrench, or a socket wrench set).

[0025] The uneven groove on the outer periphery of the rotating operation part 20 is the part that an operator grasps when rotating the rotating operation part 20. It has a diameter about three times the diameter of the hexagonal nut 18 so that an operator can apply a large torque to rotate the hexagonal nut 18 via the rotating operation part 20 with little force.

[0026] The rotating operation unit 20 is preferably made of a material having an appropriate strength, and can be made of, for example, polycarbonate (PC), acrylic (PMMA), nylon (PA), polyacetal (POM), polyethylene (PE), or the like.

[0027] Next, the operation of the single pipe clamp 10 having the above-mentioned configuration will be described. Conventionally, at construction sites and the like, temporary fencing is set up as a safety measure inside and outside the site. The temporary fencing is made up of erected steel plates and a supporting framework that supports the steel plates. This supporting framework is made up of multiple single pipes.

[0028] Figures 1 to 4 show the hex nut 18 tightened, but when attaching the single-pipe clamp 10 to the single-pipe, the worker uses a tool to loosen the hex nut 18, move the T-bolt 16 away from the receiving portion 40, and open the lid portion 14.

[0029] The single pipe can be inserted between the main body 12 and the lid 14, the lid 14 can be closed, and the T-bolt 16 can be engaged with the receiving portion 40 and the hex nut 18 can be tightened to secure the single pipe clamp 10.

[0030] Thus, the single pipe clamp 10 requires the worker to use a tool to tighten or loosen the hexagonal nut 18, but since a tool is always required, it would be convenient to be able to loosen or tighten it by hand. In response to this problem, the single pipe clamp 10 according to the embodiment of the present invention allows the worker to grip the concave and convex grooves of the rotating operation part 20 and apply force in the rotation direction to turn the hexagonal nut 18. This provides the remarkable effect of allowing the worker to perform work using a hybrid of hands and tools, for example, by operating the rotating operation part 20 by hand to tighten the hexagonal nut 18 to a certain extent for rough work, and then fastening the hexagonal nut 18 using a tool for the final work. [Explanation of symbols]

[0031] 10 single pipe clamp, 12 main body portion, 14 lid portion, 16 T-bolt, 18 hexagonal nut, 20 rotating operation portion, 22 fastening portion, 24 screw-engagement shaft portion, 32 bolt support portion, 34 pin support portion, 36 main body side clamping portion, 38 pin support portion, 40 receiving portion, 42 lid side clamping portion.

Claims

1. A single pipe clamp that can be attached to a cylindrical steel pipe, The single pipe clamp is a main body having one end to which a fastening portion is rotatably connected to a screw-engagement shaft portion and another end to which a rotation shaft is provided; a cover portion having one end provided with a receiving portion for receiving the fastening portion and having the other end rotatably connected to the rotating shaft and rotatable to cover the main body portion; having This single pipe clamp is characterized in that the fastening portion has a nut portion that screws into the threaded shaft portion and can be rotated using a tool used by an operator, and a rotation operating portion that is integrated with the nut portion so as to cover the periphery of the nut portion and can be rotated together with the nut portion using the operator's hand.

2. The single pipe clamp according to claim 1, A single pipe clamp characterized in that the rotation operating portion has a recess for inserting the tool around the nut portion located in the center.

3. The single pipe clamp according to claim 1, The single pipe clamp is characterized in that the nut portion protrudes from a ceiling surface of the rotation operating portion.

Images