JP7216417B2 - single tube clamp - Google Patents

Description

The present invention relates to monotube clamps for use in assembling scaffolds and attaching posts to scaffolds.

Single-tube clamps are used to assemble the scaffold and attach posts to the scaffold. Single tube clamps include a single clamp with one fastener, an orthogonal clamp with two fasteners connected together, a universal clamp, and a triple clamp with three fasteners connected (for example, Patent Document 1). .

The fasteners that make up the clamp consist of a fixed part having a recess for receiving a pipe, an open/close piece rotatably provided at one end of the fixed part, and a threaded rod with a nut provided at the other end of the fixed part. It has This type of fastener can hold the pipe by covering the outside of the pipe accommodated in the recess with an opening/closing piece and fixing the opening/closing piece to a fixing portion with a screw rod with a nut.

Utility Model Registration No. 3030828

However, in the conventional single tube clamp, when used in the orientation shown in FIG. Therefore, when tightening the fastening nut K, the hand must be stretched around the fastening nut K side, which makes it difficult to tighten the fastening nut K. In addition, since the hand is extended away from the operator, it is easy for the operator to lose his or her posture, and there is a risk that the operator may fall or fall.

The present invention has been made in view of the above circumstances, and the problem to be solved is that it is easier to tighten the fastening nut compared to the conventional single pipe clamp, and the worker can work in a stable posture. To provide a pipe clamp.

The single tube clamp of the present invention comprises a fixing part having a recess for accommodating a single single pipe, an opening/closing piece covering the outside of the pipe fitted in the recess and holding down the pipe, and fixing the fixing part and the opening/closing piece. A single pipe clamp equipped with a threaded rod with a nut, wherein one concave portion is provided on the inner surface side of the fixing portion, and no concave portion for accommodating the pipe is provided on the outer surface side of the fixing portion. A screw rod with a nut is rotatably provided on the free end side of the open/close piece, and a locking portion for locking the screw rod with a nut is provided on the other end of the fixing portion. It was given.

In the single tube clamp of the present invention, a threaded rod with a nut is provided on the free end side of the opening and closing piece so that the fastening nut is positioned on the operator side, so when used in the orientation shown in FIG. However, it is easy to fasten the fastening nut. In addition, unlike conventional single tube clamps, there is no need to extend the hand around the fastening nut side, so the operator is less likely to lose his posture and is safe.

The perspective view which shows an example of the single pipe|tube clamp of this invention. (a) is a front view with the opening/closing piece of the single tube clamp shown in FIG. 1 closed, (b) is a left side view with the opening/closing piece of the single tube clamp closed, and (c) is an open/close piece. The front view of the state, (d) is a left side view of the state in which the opening and closing piece is opened. Another example of the single tube clamp of the present invention is shown, (a) is a front view showing an example in which the single tube clamp is an orthogonal clamp provided with two fasteners, and (b) is a single tube clamp. FIG. 11C is a front view showing an example of a universal clamp provided with two fasteners, and (c) is a front view showing an example of a triple clamp provided with three fasteners as a single tube clamp. 1 shows an example of a building material using the single-tube clamp of the present invention, in which (a) is a perspective view showing an example of a post support provided with one single-tube clamp of the present invention, and (b) is a The perspective view which shows an example of the support|pillar support provided with the two single pipe|tube clamps of this invention. The perspective view which shows an example of a scaffolding panel. 6 is a perspective view showing an example of a suspended scaffold using the scaffolding panel shown in FIG. 5. FIG. Fig. 2 is a comparison diagram of a conventional single-tube clamp and the single-tube clamp of the present invention, in which (a) is an explanatory diagram of tightening work when using the conventional single-tube clamp, and (b) is the single-tube clamp of the present invention. Explanatory drawing of tightening work when used. 1 shows an example of use of the single tube clamp of the present invention, in which (a) is a perspective view showing a state in which a single tube pipe is housed in the recess of the fixing portion, and (b) is an opening and closing of the single tube pipe covered. The perspective view which shows the state which fixed the piece to the fixing|fixed part with the screw rod with a nut.

(Embodiment 1)
An example of an embodiment of the single tube clamp of the present invention will be described with reference to the drawings. Here, a case where the single pipe clamp is a single clamp provided with one tightening tool is taken as an example.

As an example, the single tube clamp shown in FIGS. 1 and 2(a) to (d) comprises a fixing portion 1, an opening/closing piece 2, and a threaded rod 3 with a nut.

The fixing portion 1 is a member having an L shape in a front view and having a concave portion 1a in which a single pipe (round pipe) J is accommodated. An engaging portion 1b for engaging the screw rod 3a of the screw rod 3 with a nut protrudes from one end of the fixing portion 1. As shown in FIG. The locking portion 1b is provided with a U-shaped locking groove 1c in plan view, and the screw rod 3a is accommodated in the locking groove 1c. A retaining projection 1d is provided on the tip side of the engaging portion 1b to prevent the later-described fastening nut 3b from coming off or slipping. The opening/closing piece 2 is rotatably supported by the first shaft member 4a on the other end side of the fixing portion 1. As shown in FIG.

The opening/closing piece 2 is a member for covering the outer side of the single pipe J accommodated in the recess 1a to hold down the single pipe J. As shown in FIG. The opening/closing piece 2 of this embodiment has a concave portion 2b curved in an arc so as to cover the outer circumference of the single pipe J. As shown in FIG. A holding portion 2 a for holding the screw rod 3 with a nut is provided on the tip (free end) side of the opening/closing piece 2 . A screw rod 3 with a nut is rotatably supported by the holding portion 2a.

The nut-equipped screw rod 3 is a member for fixing the fixing portion 1 and the opening/closing piece 2 . The nut-equipped threaded rod 3 of this embodiment includes a fastening nut 3b that is screwed onto the tip end side 3d of the threaded rod 3a in the axial direction . The threaded rod 3a has a round rod shape with a thickness that can be locked in the locking groove 1c, and has a thread on its outer periphery for screwing the fastening nut 3b.

A ring portion 3c is provided at the lower end of the screw rod 3a. The ring portion 3c is arranged between two opposing holding portions 2a provided on the opening/closing piece 2, and is rotatably held by a second shaft member 4b inserted between the holding portions 2a and the ring portion 3c. . An upper end (tip) of the screw rod 3a is provided with a retaining portion (not shown) that prevents the fastening nut 3b screwed onto the screw rod 3a from falling off. An existing nut can be used for the fastening nut 3b.

(Embodiment 2)
In the above embodiment, the single tube clamp is an example of a single clamp provided with one tightening tool, but the single tube clamp of the present invention is provided with a plurality of tightening tools, An orthogonal clamp (FIG. 3(a)), a universal clamp (FIG. 3(b)), or a triple clamp (FIG. 3(c)) having three fasteners can also be used.

(Embodiment 3)
The single-tube clamp of the present invention can be used as a clamp for a column support 10 as shown in FIGS.

A column support 10 shown in FIG. The clamp 12 is welded to one end of the support shaft 11 , and the adjuster 13 is screwed onto the outer periphery of the support shaft 11 .

The column support 10 shown in FIG. 4( b ) comprises a base 14 , a support shaft 11 , two clamps 12 and an adjuster 13 . The support shaft 11 is erected on one side of the base 14 , and each clamp 12 is slidably provided on the other side of the base 14 .

In any of the column supports 10, the adjuster 13 is screwed onto the support shaft 11 so that it can be raised along the support shaft 11 by rotating in one direction and lowered along the support shaft 11 by rotating in the other direction. is configured to

The column support 10 shown in FIGS. 4(a) and 4(b) is a hanging scaffold (FIG. 6) formed by combining a plurality of scaffolding panels A as shown in FIG. ) is used when erecting L.

A scaffolding panel A shown in FIG. 5 has a rectangular scaffolding board E arranged and fixed on the upper surface of a peripheral frame having two elongated members B, two frame pipes C and a reinforcing member D. As shown in FIG. There is a gap F between the reinforcing member D and the frame pipe C on both ends in the longitudinal direction.

As shown in FIG. 6, this scaffolding panel A is suspended from a suspension chain I suspended from a frame (main girder) H of an elevated road, iron bridge, or the like, and is connected vertically and horizontally to form a suspended scaffolding. can be formed.

When a conventional single tube clamp M is used as the clamp 12 of the column support 10, as shown in FIG. In this case, the hand must be stretched around the tightening nut K, which may make it difficult to tighten the tightening nut K.

On the other hand, when the single tube clamp of the present invention is used as the clamp 12 of the column support 10, as shown in FIG. Since it protrudes above the engaging portion 1b and is positioned on the operator side, the fastening nut 3b can be tightened at a position close to the operator (above the engaging portion 1b) , making it easy to perform the fastening operation of the fastening nut 3b. There are merits.

(Example of use)
A usage example of the single tube clamp of the present invention will be described with reference to FIGS. 8(a) and 8(b).
(1) As shown in FIG. 8( a ), the fixed part 1 is arranged outside the single pipe J so that the single pipe J is accommodated in the concave portion 1 a of the fixed part 1 .
(2) As shown in FIG. 8(b), the opening/closing piece 2 is placed on the outer side of the single pipe J that is accommodated in the recess 1a, and the screw rod 3 with nut pivotally supported by the opening/closing piece 2 is attached to the fixed portion 1. The screw rod 3 with a nut is housed in the locking groove 1c of the locking portion 1b, the axial tip side 3d of the nut-equipped screw rod 3 protrudes above the locking groove 1c, and the fastening nut 3b of the nut-equipped screw rod 3 is inserted as shown in FIG. As shown in b), the engaging portion 1b is tightened from above to complete the connection work.

The single-tube clamp of the present invention can be used for a wide range of uses, such as connection of single-tube pipes J, as with the conventional single-tube clamp M.

REFERENCE SIGNS LIST 1 fixing part 1a recess 1b locking part 1c locking groove 1d retaining projection 2 opening/closing piece 2a holding part
2b recess
3 screw rod with nut 3a screw rod 3b fastening nut 3c ring part
3d axial direction tip side
4a First shaft member 4b Second shaft member 10 Post support 11 Support shaft 12 Clamp 13 Adjuster 14 Base A Scaffolding panel B Elongated member C Frame pipe D Reinforcing member E Scaffolding plate F Gap G Locking member H Frame (main girder )
I Suspension chain J Single pipe K Fastening nut (of conventional clamp) L Vertical strut M Conventional single pipe clamp

Claims (2)

A fixing part having a recess for accommodating one single pipe , an opening/closing piece that covers the outer side of the single pipe housed in the recess and presses the single pipe, and a screw with a nut that fixes the fixing part and the opening/closing piece. A monotube clamp with a rod,
One concave portion of the fixing portion is provided on the inner surface side of the fixing portion , and is curved downward so that it can cover approximately half the circumference in the circumferential direction from the upper part of the outer peripheral surface of one single pipe pipe,
The fixing portion has a locking portion on the upper end side of the concave portion in the bending direction. It protrudes so as to protrude outward and laterally from the outer peripheral surface of the single tube pipe,
The locking portion has a locking groove,
A recess for accommodating the single pipe is not provided on the outer surface side outside the recess of the fixing portion,
The opening/closing piece is rotatably connected to the lower end of the concave portion of the fixing portion in the bending direction, and is capable of being pulled up and rotated from the bottom side of the single tube pipe to the top side,
The opening/closing piece has one concave portion on its inner surface side, and the concave portion of the opening/closing piece can cover the outer peripheral surface of approximately half the circumference from the bottom of the outer peripheral surface of the single tube pipe, which is not covered by the concave portion of the fixing portion. The length of the concave portion of the opening/closing piece in the bending direction is made shorter than the outer peripheral length of the outer peripheral portion of the substantially lower half of the single tube pipe, so that the concave portion of the opening/closing piece is curved. Even if it covers the substantially lower half circumference of the single tube pipe, it is set to a length that does not reach the locking portion, so that a gap is formed between it and the locking portion,
The nut-equipped threaded rod is in the shape of a straight rod, and its axial root side is rotatably attached to the bending direction distal end side of the opening/closing piece, and the axial distal end side can be pulled up toward the locking portion. When pulled up toward the locking portion, it can be housed in the locking groove of the locking portion. When it is housed, the tip in the axial direction protrudes above the locking groove and is screwed to the protruding tip in the axial direction. The nut can be tightened above the locking portion to be fixed to the locking portion, and the nut can be loosened above the locking portion so that it can be removed from the locking groove.
A single tube clamp characterized by: The single tube clamp of claim 1, wherein
A retaining projection is provided on the upper surface of the leading end of the entrance of the locking groove of the locking portion, and the retaining projection protrudes upward from the upper surface of the leading end of the doorway to hold the nut housed in the locking groove. It is possible to prevent the attached screw rod from coming out of the locking groove,
A single tube clamp characterized by:

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