WO1994015044A1

WO1994015044A1 - Clamp

Info

Publication number: WO1994015044A1
Application number: PCT/JP1993/001837
Authority: WO
Inventors: Kijyu Nakamura
Original assignee: Kijyu Nakamura
Priority date: 1992-12-24
Filing date: 1993-12-17
Publication date: 1994-07-07
Also published as: EP0691443A4; JPH06193256A; JP3030451B2; CA2152054A1; TW233275B; EP0691443A1

Abstract

A universal clamp that is capable of solving problems of insufficient strength and complicated processing inherent in a conventional clamp and holding pipes having different diameters, and which is also capable of holding pipes such that they intersect with each other perpendicularly or diagonally, or that they are parallel to each other. In a main body, an embracing and securing body (7) provided with two recessed portions is pivotally secured at one end of an embracing and holding body (1) by means of a pin (8), and a groove type auxiliary embracing and holding body (10) is pivotally secured at the other end of the embracing and holding body (1) by means of a pin (9). A nut (13) for clamping a clamping reinforcement member (12) is mounted at the leading end of the groove type auxiliary embracing and holding body (1) or the leading end is made thicker and threaded for threadingly receiving a bolt (7). The embracing and holding body (1) and the embracing and securing body (7) clamp a pipe therebetween, and the auxiliary embracing and holding body (10) is put over the embracing and securing body (7). Then, a bolt (11) is tightened such that the auxiliary embracing and holding body (10) is pressed closely to the recessed portions of the embracing and securing body (7) to thereby holding the pipe. In a structure where pipes can perpendicularly intersect with each other, when one embracing and holding body (1) is rotated together with a main shaft (3) so as to push up a rotation stopper lid member (4), the other embracing and holding body (2) and the rotation stopper lid member (4) are freed from the rotation of the main shaft, and when the two embracing and holding bodies (1, 2) are located so as to perpendicularly intersect with each other or to be parallel to each other, the rotation stopper lid member (4) is placed over the main shaft (3) such that the one embracing and holding body (1) is fixed relative to the other embracing and holding body (2).

Description

Specification

Klumph's technical field

The present invention relates to a clamp used for connecting steel pipes such as temporary scaffolds and shelves. Background technology

Conventionally used clamps generally have one end of the holding body and the holding rest pivoted.The base of the tightening bolt is connected to the other end of the holding body and a U-shaped recess is formed at the other end of the holding body. Then, the tip of the bolt is fitted into this concave groove, and a nut is screwed into the bolt to fasten it. In this case, in order to assemble the pipes in parallel or orthogonally, the two clamps must be attached to each other with their bottoms facing each other or provided with a plurality of projections on the bottom of one clamp and the projections on the bottom of the other clamp. A method of squeezing a fitting hole, fitting a protrusion into the hole, and fixing by crimping was used. When the pipes were assembled obliquely, a circular window was provided at the bottom of both clamps, and a column fitted into the circular windows was loosely fitted and used as a universal clamp.

In the case of the conventional structure, a concave groove was formed at the tip of the holder, which caused a cross-sectional defect, which sometimes led to a lack of strength, and had problems such as complicated processing.

In order to solve the above problems, the inventor has previously developed a clamp disclosed in Japanese Utility Model Publication No. 57-18707, but this invention further improved this and provided a bolt insertion hole. The structure is such that the holder can be clamped with bolts and applied to pipes of different dimensions.

In general, there are two types of pipes, one with a circular cross section and the other with a square cross section. When these pipes are assembled at right angles, in parallel, in an oblique manner, and in a combination of pipe diameters, there are various types. Managing these various types of clamps is expensive and cumbersome. The present invention has been devised to solve these problems. Disclosure of the invention

The configuration of the clamp according to the present invention is characterized in that the holding rest 1 and one end of the holding body 4 are pivotally connected, and the other end of the holding body 1 is pivotally connected to both bases of the groove-shaped auxiliary holding body 10. Screw the bolt 11 into the tip of the auxiliary holder 10.

In the case of a thick pipe, the spherical portion at the tip of the bolt 11 is provided with a spherical receiving recess A2 on the outer surface of the other end of the holder 7, and in the case of a thin pipe, the spherical surface of the other end of the holder 4 is provided. The recess A 1 is pressed, and the pipes are uniformly pressed and held by the hinge portions of the holding body 1, the holding body 7, and the auxiliary holding body 10.

Also, in order to make the holder freely orthogonal, a rectangular hole 1a is pierced in the holder 1, a circular hole 2a is pierced in the holder 2, and the square hole 1a and the circular hole 2a are formed. The main shaft 3 composed of a prism and a cylinder is inserted, the main shaft 3 and the holding body 1 rotate at the same time by the prism of the main shaft 3, and the holding body 2 rotates by the cylindrical portion of the main shaft 3. In the open structure. The prism side of the main shaft 3 is fixed to the holder 1, the other end of the main shaft 3 forms a rotating plate 3 a, and the stopper 2 is pivotally attached to the holder 2 with the pin 5.

When the holding body 1 and the holding body 2 are used as a free clamp, the rotation stopper lid member 4 is pushed up to use the holding body 1 and the holding body 2 in a state where the rotation of the holding body 1 and the holding body 2 is released. When the holding body 2 is fixed to be orthogonal or parallel to use, the rotation stopper cover member 4 is covered on the rotating plate 3 a of the main shaft 3 and the rotation of the holding body 1 and the holding body 2 is fixed and used. I do. Brief explanation of drawings

Fig. 1 (a) is a front view showing an example in which circular pipe clamps are used in combination at right angles, and (b) is a top view. Fig. 2 (a) is a front view showing an example in which a circular pipe clamp is used in an oblique combination, and (b) is a top view. FIG. 3 shows an example of application to a small-diameter circular pipe, in which a nut 13 is welded to the top of an auxiliary holding body 10. Fig. 4 (a) is a front view showing an example in which rectangular pipe clamps are combined and used at right angles, and (b) is a top view. Figure 5 (a) shows a square It is a front view which shows the example which used the clamp of Eve in oblique combination, (b) is a top view. FIG. 6 shows the operation of the universal clamp. 7 (a) is a side view of the main shaft 3 forming the rectangular rotating plate 3a, (b) is a top view, and (c) is a bottom view. Fig. 8 (a) shows a rotating plate 3a force, a main shaft 3 which forms a circular hole 3d in a circular shape, and (b) shows a rotation stopper lid which forms a square projection 4b which fits in the hole 3d. FIG. 6 is a view showing a member 4. FIG. 9 (a) shows the main shaft 3 in which the rotating plate 3a is circular and forms a cross groove 3e, and FIG. 9 (b) shows a coffee stopper member 4 which forms a projection 4e fitted in the cross groove. It is a figure. Fig. 10 (a) is a view showing a swaged reinforcing washer, and (b) is a side view. _C A preferred embodiment for carrying out the invention

Figures 1, 2, and 4 show examples of thick pipes. Figures 3 and 5 show examples of thin pipes.

This crumb has one end of a holder 1 and one end of a holder 7 pivoted by pins 8. Both bases of the groove-shaped auxiliary holder 10 are pivotally connected to the other end of the holder 1 by a bottle 9, and a caulking reinforcing member 12 is caulked to the tip of the auxiliary holder 10. A female screw is formed or a nut 13 is fixed, and a bolt 11 having a spherical end is screwed into the female screw. In addition, it is also possible to make the tip of the auxiliary holding body 10 thick without using the caulking reinforcing member 12 or the nut 13, form a female screw on this end, and screw the bolt 11. Spherical receiving recesses A1 and A2 are formed on the outer surface of the other end of the holder.

For use, surround the circumference of the pipes B 1 and B 2 with the holder 1 and the holder 7, and place the tip of the auxiliary holder 10 on the holder 7, and then rotate the bolt 11 to rotate the bolt 11 Is pressed into the receiving recesses A1 and A2 on the outer surface of the other end of the holder.

FIG. 6 is a diagram illustrating an operation for making the robot freely orthogonal. Hereinafter, the operation in the orthogonal position will be described with reference to FIG.

A hole 2a, into which the cylindrical portion 3b of the main shaft 3 is loosely fitted, is bored in the holder 2 of the clamp, and the main shaft forms an octagonal rotating plate 3a at the top. A cylindrical portion 3 b following the octagonal rotating plate 3 a of the main shaft 3 is inserted into the hole 2 a of the holder 2. The prism 3 c following the column 3 b of the spindle 3 is inserted into the square hole drilled in the holder 1 and fixed to the holder 1, and the spindle 3 rotates with the holder 1. With a roll. The stopper 2 is pivotally attached to the holder 2 by a pin 5. In this case, when the main body 3 penetrates the holding body 1, the swaging reinforcing washer 6 may be used.

Next, an operation when the clamp is used as an orthogonal parallel free clamp will be described.

(B) When holding the pipe obliquely, push up the rotation stopper lid member 4 to release the rotation of the holder 2 and rotation stopper lid member 4 from the rotation of the main shaft 3 and the holder 1. Use it freely.

(π) When the pipe is held parallel or orthogonal, the main shaft 3 and the holder 1 are rotated parallel or perpendicular to the holder 2, and the bar stopper member 4 is rotated by the rotating plate 3 of the main shaft. a, and the rotating plate 3a and thus the main member 3 and the holder 1 are fixed in parallel or at a right angle by the projection 4a of the rotation stopper lid member 4 and the projection 2b of the holder 2.

Fig. 1 shows an example of using circular bipe clamps combined at right angles. A caulking reinforcing member 6 is used for the main shaft.

Figure 2 shows an example of using a circular pipe clamp in an oblique combination. A caulking reinforcing member is used for the main shaft.

FIG. 3 is a diagram showing an example in which a thin circular pipe is clamped.

FIG. 4 is a diagram showing an example of an orthogonal combination of rectangular pipes, and FIG. 5 is a diagram showing an example of an oblique combination of rectangular pipes. In both cases, caulking reinforcement washers 6 are not used.

FIG. 6 is a diagram of the main chain 3 forming the rectangular rotating plate 3a.

FIG. 8 shows a combination of a main plate 3 that is circular and forms a square hole 3d with a rotating plate 3a and a rotation stopper lid member 4 that forms a square projection 4b that fits into the square hole 3d. Show.

FIG. 9 shows a combination of a main shaft 3 in which a rotary plate 3a is circular and forms a cross groove 3e, and a barb stopper member 4 which forms a projection 4e fitted in the cross groove.

FIG. 10 is a view showing a caulking reinforcing washer. Industrial applicability

The present invention is provided with an auxiliary holding member having the above-described structure, and a bolt is screwed to this tip. Thus, the spherical portion at the tip of the bolt can be pressed against the spherical receiving recess on the outer surface of the other end of the holding body, so that it is not necessary to provide a groove in the holding body.

Therefore, there is no cross-sectional defect and there is no possibility of breakage during use. In addition, since the bolt tip and the receiving recess for holding are in contact with each other on a spherical surface, there is no problem in tightening the bolt for image transfer.

Since the holder has two receiving recesses, it can be safely and reliably applied to pipes of different diameters.

In addition, the number of types of clamps, such as circular cross-section pipes, square cross-section vibes, large and small diameters, orthogonal, parallel, and oblique cross-sections, will be reduced, which will reduce management costs and simplify management.

Claims

The scope of the claims

1. One end of the holding body 1 and the holding body 7 are pivotally connected, and both bases of the groove-shaped auxiliary holding body 10 are pivotally connected to the other end of the holding body 1, and the tip of the auxiliary holding body 10 is provided. A bolt 11 is screwed into the clamp 11 so that the spherical portion at the tip of the bolt 11 can be pressed into two spherical receiving concave portions on the other outer surface of the holder 7 so as to be a δ cramp.

2. A rectangular hole 1a is drilled in the holder 1, a circular hole 2a is drilled in the holder 2, and a main shaft composed of a prism and a cylinder is formed in the square hole 1a and the circular hole 2a. The main shaft 3 is fixed to the holding body 1 on the square side, and the other end of the main shaft 3 forms a rotating plate 3a. A clamp, characterized in that the pivotally mounted detent lid member 4 can cover the lid.