JP2540581Y2 - Clamping device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clamp device used for attaching a scaffold pipe or a handrail pipe attached to a scaffold to a flange portion (hereinafter, referred to as a plate portion) such as a steel frame. A clamp for holding the plate body portion, and a pipe clamp that is swingably connected to the clamp to hold the pipe, and that fixes a fixed angle of the pipe clamp to the clamp. The present invention relates to a clamp device that can be fixed in parallel or perpendicular to the plate surface of a plate portion to be formed.

[0002]

2. Description of the Related Art As a conventional clamp device of this type, there is a clamp device in which a U-shaped clamp and a pipe clamp are pivotally connected by a square root bolt so that the connection angle of the pipe clamp can be freely changed. However, with this clamp device, when the pipe is supported at a position where a load is applied to the square root bolt from the pipe clamp, the load concentrates on the square root bolt and the square root of the bolt may be deformed or damaged. There is also, and considerable accuracy is required for the square hole through which the square root bolt is inserted, so it takes considerable time to manufacture,
The cost was high.

The present invention has been made in view of the above problems, and has as its object to provide a clamp device which can greatly improve the support strength of a pipe clamp connecting portion, and which can be simplified in structure and can be manufactured easily and at low cost. Aim.

[0004]

According to the present invention, there is provided a clamp device in which a clamp screw is screwed through one of two opposing legs of a U-shaped clamp body, and the U-shaped clamp body includes a U-shaped clamp body. A movable table pivotally attached to a corner portion between the leg portion on the side facing the clamping screw and the bottom portion connecting the two leg portions or in the vicinity thereof at a corner so as to be capable of being driven by a support shaft parallel to the ridge line direction of the corner portion. A pipe clamp attached to a clamp mounting seat of the movable base. The U-shaped clamp body and the movable base have the clamp mounting seat substantially parallel to a leg on a side facing the clamp screw. Fixing holes that match each other when in the proper orientation, and fixing holes that match each other when the movable mount rotates 90 degrees and the clamp mounting seat is in a direction substantially parallel to the bottom portion, Characterized in that so as to fix the movable table by selectively inserted securable fasteners these fixing holes.

[0005]

Embodiments will be described with reference to the drawings.
1 to 3 show a clamp device according to the present invention,
In these figures, reference numeral 1 denotes a U-shaped clamp for holding a flange portion such as a steel frame, that is, a plate-shaped portion F, and a U-shaped clamp body 5 composed of opposing legs 2, 3 and a bottom portion 4 connecting them. One leg 2 of the two legs 2 and 3
A screw 6 for clamping is threaded through the
A disc spring 7 is attached to the tip of the. 8 is a movable platform,
A corner 9a (or a position near the corner) between the leg 3 and the bottom 4 on the side of the clamp body 5 facing the clamping screw 6 is insulated by a support shaft 9 parallel to the ridge direction of the corner. A pipe clamp 10 for holding a pipe P for scaffolding or the like is attached to the clamp attachment seat 8a of the movable base 8 as much as possible.

The U-shaped clamp body 5 and the movable table 8
When the clamp mounting seat 8a is in a direction substantially parallel to the leg 3 on the side facing the clamp screw 6, the fixing holes 11 and 12 which match each other, and the movable table 8 is 90 ° The clamp mounting seat 8a rotates so that the bottom 4
Fixing holes 1 that match each other when they are in a direction substantially parallel to
1, 13 are provided, and these fixing holes 11, 1 are provided.
The movable table 8 is fixed by a fixture 14 which can be selectively inserted and fixed to the movable tables 2 and 13. The fixing screw 11 on the side of the U-shaped clamp body 5 penetrates the reinforcing rib on the side of the leg 3.

As shown in FIG. 3, the movable base 8 is formed of a U-shaped member which sandwiches the clamp body 5 of the U-shaped clamp 1, and has a substantially L-shaped opposed side plate. The L-shaped side plate portion 8b is formed with a fixing hole 12 at one end of the L-shaped side plate portion 8b, and a bottom plate portion connecting the both side plate portions and forming the clamp mounting seat 8a. The fixing holes 13 are formed at the ends. In addition, the side plate 8b is arranged such that the clamp mounting seat 8a is oriented substantially in parallel with the leg 3 facing the screw 6 for clamping, so that the clamp body 5
When the fixing hole 11 on the side and the fixing hole 12 on the side of the movable base 8 coincide with each other, a right-angle inner corner 15 matching with the right-angle inner side surfaces 5b and 5c of the corner 5a of the U-shaped clamp body 5 And the clamp mounting seat 8a is oriented substantially parallel to the bottom 4 so that the fixing hole 11 on the side of the clamp body 5 is fixed.
And a side edge portion 16 that matches the inner side surface 5b of the leg portion 3 when the other fixing hole 13 on the movable base 8 side matches.

[0008] As shown in the figure, the fixing device 14
4a and a nut 14b to be screwed thereto.
By properly inserting the bolts 14a through the fixing holes 11, 12, and 13 and fastening them with the nuts 14b,
The movable base 8 is fixed. In addition to the bolt and nut, a combination of a headed pin and a stopper (for example, a pine needle or a beta pin) that can be detachably attached to the tip of the pin can be used as the fixing tool 14. Further, in the case of using a bolt and nut, of the fixing holes,
The fixing hole on the side where the bolt tip penetrates may be used as a screw hole, and the nut may be omitted or the nut may be fixed by welding.

The support shaft 9 is composed of a bolt. As shown in FIG. 3, the support shaft 9 is provided with a bolt insertion hole 17 penetrated through each side plate 8b of the movable base 8, and a U-shaped clamp body 5 as shown in FIG. Bearing tube 18 fixed to the outer corner of the corner 5a
The movable table 8 is pivotally connected to the clamp main body 5 so as to be capable of squirting by screwing a nut 19 to the tip of the movable table 8.

The pipe clamp 10 has a pair of holding members 20 and 21 pivotally attached to each other at one end thereof, and holds the pipe P between the holding members 20 and 21 so as to hold one of the pipes P. Screw shaft 22 for clamping supported on the other end of the holding body 20
Is engaged in the engaging groove 23 at the other end of the other holding body 21 and the nut 24 is tightened to hold and fix the pipe P. As shown in FIG. 3, a bolt insertion hole 25 is provided in one of the holding members 20 of the pipe clamp 10, and the clamp mounting seat (bottom plate portion) 8a of the movable base 8 is formed through the hole 25. The pipe clamp 10 is rotatably mounted on the clamp mounting seat 8 a of the movable base 8 by screwing a stepped bolt 27 into a nut 26 embedded in the movable base 8.

Next, a description will be given of an example of use of the clamp device having the above-described structure. When the pipe P is vertically fixed to a horizontally extending plate portion F such as a steel frame, as shown in FIG. In the state where the movable base 8 is held so that the clamp mounting seat 8a thereof is parallel to the bottom 4 of the U-shaped clamp body 5, the bolt 14a of the fixture 14 is held.
The fixing hole 11 on the side of the U-shaped clamp body 5 and the movable base 8
And the nut 1
The movable table 8 is fixed to the U-shaped clamp body 5 by screwing the 4b. At this time, the side edges 16 of the movable body 8 are aligned with the inner side surfaces 5 b of the legs 3 of the U-shaped clamp body 5.

Then, the U-shaped clamp body 5 is fitted to the plate body portion F, and the end of the plate body portion F is connected to the right-angle inner side surface 5b of the corner portion 5a of the U-shaped clamp body 5.
5c, and tighten the clamping screw 6 so that the plate body F
Bite. At this time, the side edge portion 16 of the movable base 8 abuts and locks on the plate surface (horizontal plane) of the plate body portion F. The pipe P is held and fixed in the vertical direction as shown in FIG. In this case, even if the load from the pipe P is applied to the movable base 8, the load can be supported by the support shaft 9 and the fixture 14, and depending on the direction of the load, the side edge portion 16 of the movable base 8 can be supported. The pipe clamp 10 can also be supported by the plate body portion F through the support, so that the support strength of the pipe clamp 10 is large.

When the pipe P is fixed in parallel with the plate portion F, the movable base 8 is rotated by 90 degrees so that the clamp mounting seat 8a is in the U-shaped clamp body 5 as shown in FIG. In this state, the bolt 14a of the fixture 14 is fixed to the fixing hole 11 on the U-shaped clamp body 5 side and the other fixing hole 12 on the movable base 8 side.
The movable table 8 is fixed to the U-shaped clamp body 5 by screwing and fastening the nut 14b. Then, the U-shaped clamp body 5 is fitted into the plate body portion F, and an end of the plate body portion F is abutted against the right-angled inner side surface 5b of the corner portion 5a. F is bitten. Thereby, the pipe clamp 10
Is in a state where the pipe P can be fixed horizontally. At this time,
The right inner corner 15 of the movable base 8 contacts the plate surface and the end surface of the plate body portion F. In this case, the load from the pipe P is applied to the plate body portion F through the support shaft 9 and the fixture 14, and further via the right-angled inner corner portion 15.
Can be supported by the pipe clamp 10
Has a higher supporting strength.

In this embodiment, the movable base 8 is provided with a right-angled inner corner 15 and a side edge 1 which abut and lock on the plate surface or the end surface of the plate body portion F.
6 are provided, but these are not essential requirements of the present invention and can be omitted. In this embodiment, the pipe clamp 10 is rotatably mounted on the clamp mounting seat 8a of the movable body 8, but may be non-rotatably fixed to the clamp mounting seat 8a at a predetermined angular position.

[0015]

As described above, according to the clamp device of the present invention, when the U-shaped clamp is fitted and fixed to the plate portion of the steel frame, the movable base is rotated around the support shaft and the pipe clamp is provided. The direction of the temporary pipe supported by the bracket can be selected, for example, either vertically or vertically or horizontally horizontally. At that time, the fixing hole on the U-shaped clamp body side and the fixing hole on the movable base side And select the matching pair,
By inserting and fixing the fixing tool into both matched fixing holes, the movable table is prevented from rotating around the support shaft,
The direction of the temporary pipe supported by the pipe clamp can be fixed in a predetermined direction.

That is, according to the present invention, the following special effects can be expected. (A) When the movable table is fixed by tightening a bolt used as a support shaft for pivotally connecting the movable table, the surface between the movable table and the U-shaped clamp body is pressed against each other by bolting. Since the movable table is fixed by the frictional force, the movable table can be easily supported when the fastening force of the bolt is loosened even by a small amount due to vibration, or when a rotational force larger than the frictional force acts on the pipe clamp. While rotating around the axis, the direction of the pipe clamp, that is, the direction of the temporary pipe supported by the pipe clamp, changes, whereas in the present invention, the position of the pipe at a position away from the support shaft is changed. The rotation of the movable table is prevented by the fixing holes provided in the V-shaped clamp body and the movable table and the fixing tool inserted through the holes, so that the fastening of the fixing tool is loosened by vibration. Even in a situation, the direction of the pipe clamp can be reliably held as long as the fixing tool does not drop off from the fixing hole, and the fixing tool is not sheared even when a large rotational force acts on the pipe clamp. As far as possible, the direction of the pipe clamp can be reliably held against the rotational force, and it can be used as an extremely safe clamp device.

(B) Further, the fixed angle of the movable base 8, that is, the direction of the temporary pipe supported by the pipe clamp 10, is set to 2
Can be reliably and precisely held at two fixed angles,
Moreover, since a large torque is not required for tightening the fixture 14, handling is easy.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of a clamp device according to the present invention, in which a pipe is fixed vertically to a plate body.

FIG. 2 is a side view similar to FIG. 1 and shows a case where a pipe is fixed horizontally to a plate body.

FIG. 3 is an exploded perspective view of the same clamp device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 U-shaped clamp 2 Leg 3 Leg 4 Bottom 5 U-shaped clamp body 5 a Corner of U-shaped clamp body 6 Clamping screw 8 Movable base 8 a Clamp mounting seat 9 Support shaft 10 Pipe clamp 11 Fixing hole 12 Fixing hole 13 Fixing Hole 14 Fixture F Plate Body P Pipe

Claims (1)

(57) [Scope of request for utility model registration] 1. A U-shaped clamp in which a clamping screw is screwed through one of two opposing legs of a U-shaped clamp body, and a leg of the U-shaped clamp body facing the clamping screw. A movable base pivotally movably mounted on a corner portion between the bottom portion connecting the two leg portions or a position near the corner portion by a support shaft parallel to the ridge line direction of the corner portion, and a movable mounting member mounted on the clamp mounting seat of the movable base. A pipe clamp, wherein the U-shaped clamp body and the movable table have fixing members that match each other when the clamp mounting seat is in a direction substantially parallel to the leg portion on the side facing the clamping screw. A hole and a fixing hole are provided which are aligned with each other when the movable mount is rotated 90 degrees and the clamp mounting seat is oriented substantially parallel to the bottom, and can be selectively inserted and fixed into these fixing holes. Solid A clamp device configured to fix the movable table with a fixture.