WO2013009075A1

WO2013009075A1 - Clamp for a pipe

Info

Publication number: WO2013009075A1
Application number: PCT/KR2012/005470
Authority: WO
Inventors: 이재철; 장명휘
Original assignee: (주)미래엔지니어링
Priority date: 2011-07-12
Filing date: 2012-07-10
Publication date: 2013-01-17

Abstract

The present invention relates to a clamp for a pipe, comprising: a body which accommodates the pipe therein; a cover which covers, tightens, and restrains the pipe accommodated in the body; and a coupling pin inserted into a portion where the body and the cover are joined so as to couple the main body and the cover to each other. The body and the cover comprise: a first accommodating portion and a second accommodating portion, respectively, in which the pipe is accommodated; a first hinge portion and a second hinge portion, respectively, formed at one side of each of the first accommodating portion and the second accommodating portion and hinged with each other; and a first coupling portion and a second coupling portion, respectively, formed at the other side of each of the first accommodating portion and the second accommodating portion such that the first coupling portion and the second coupling portion are joined and fixed by the insertion of the coupling pin. The coupling pin has a cam member coupled to the center thereof so as to be coupled/decoupled to/from the first coupling portion. Using the above-described clamp for a pipe according to the present invention, the accommodating space can be adjusted on the basis of the diameter and shape of the pipe using the hinge portions formed at the one side of the body and of the cover, and the coupling pin is inserted into the coupling portion having a simple structure so as to stably fix the accommodated pipe.

Description

Pipe clamp

The present invention relates to a pipe clamp, and more particularly, to a pipe clamp for tightening and fixing a pipe to be received in a very simple operation for connecting and fixing a pipe having a variety of apertures and shapes.

Clamps are often used to connect or secure scaffolding pipes, one of the materials typically used in construction or building sites.

1 is a plan view of a conventional pipe clamp.

As shown in FIG. 1, a conventional clamp for a pipe includes a first body 1, a second body 2, and a first body formed so that one end of the pipe is overlapped and hinged so as to rotate around the pipe. 1) is coupled to the screw rod (3) inserted into the insertion groove (6) formed in the flange (5) of the second body (2) by rotating to the screw rod (3) and the second body (2) side hinged to A nut 4.

In the conventional pipe clamp configured as described above, the nut 4 is moved helically along the axis of the screw rod 3 to press the flange 5 of the second body 2 to press the first body 1 and the second body. Body 2 tightens the pipe.

The conventional pipe clamp has a problem in that workability is deteriorated because a tool such as a spanner must be used to completely tighten the nut in the process of clamping the circular pipe by fastening the nut 4 to the screw rod 3. .

And the conventional pipe clamp can clamp a large diameter and a small diameter circular pipe, but when the nut 4 is incompletely fastened, there is a problem that a safety accident may occur by separating the pipe from the clamp.

In addition, the conventional pipe clamp can clamp only the circular pipe corresponding to the inner diameter when the first body 1 and the second body 2 are fastened, and therefore, in order to clamp the square-shaped square pipe, A separate clamp is to be provided.

For this reason, the conventional pipe clamp has a high cost, and also has a problem in that workability is greatly reduced due to the trouble of finding a clamp that matches the shape of the pipe in the field.

[Preceding technical literature]

(Patent Document 1) Republic of Korea Patent Publication No. 10-2000-0006289 (published 25 January 2000)

The present invention is to solve the problems as described above, an object of the present invention is to provide a clamp for pipes that can be clamped using a single pipe, as well as a circular pipe having a variety of diameters square square pipe.

It is another object of the present invention to provide a pipe clamp which can stably clamp a pipe by using a clamp having a simple structure.

Still another object of the present invention is to provide a pipe clamp that can clamp the pipes of various diameters and shapes more firmly and stably by compensating for the difference in diameter even though there is a processing tolerance of the pipe clamp and a production tolerance of the pipe.

Still another object of the present invention is to provide a clamp for a pipe that can maintain a clamping state even if vibration occurs in the pipe and can minimize vibration.

According to a feature of the present invention for achieving the object as described above, the present invention is the body and the pipe is accommodated and seated, the cover and tightening while restraining and tightening the pipe accommodated in the body and the body and the cover to fasten the cover with the body; A fastening pin inserted into a portion to which the cover is coupled, wherein the body and the cover are formed on one side of each of the first and second accommodating parts and the first and second accommodating parts on which the pipe is seated and hinged to each other. First and second hinge parts and first and second coupling parts formed on the other side of the first and second receiving parts and fixed with the fastening pins inserted and coupled thereto, and the fastening pins are coupled to a central part of the fastening pins. And a cam member engaged with and released from the first engaging portion.

According to another feature of the invention, the present invention is inserted into the body is coupled to the body and the cover is coupled to the body and the cover to fasten and restrain the cover and tighten the cover and tightening the pipe accommodated in the body, the pipe is received and seated It includes a fastening pin, wherein the body and the cover, respectively, the first and second receiving portion for seating and receiving the pipe, the first and second hinge portion formed on one side of the first and second receiving portion and hinged to each other and the First and second coupling parts formed on the other side of the first and second receiving parts and fixed in a state where the fastening pin is inserted into and coupled to each other, between a maximum open position and a closed position between the first and second coupling parts; A fastening holding part is formed on a plate surface that is in surface contact with the fastening pin in the second coupling part so that the fastening pin can be fixed step by step.

1 is a plan view of a conventional pipe clamp,

2 is a perspective view of a clamp for a pipe according to a first embodiment of the present invention.

3 is an exploded perspective view showing the clamp shown in FIG. 2 from another side;

4 is an exemplary diagram illustrating various forms of incisions.

5 is a perspective view showing a state in which a large diameter round pipe or a square pipe is tightened.

6 is a perspective view showing a state in which a small diameter round pipe is tightened.

7 is a cross-sectional view of FIG.

8 is a cross-sectional view of FIG. 6.

Figure 9 is an enlarged view showing an enlarged fastening pin.

10 and 11 are exemplary views illustrating various forms of fastening pins inserted into the body and the cover.

12 is a partially enlarged cross-sectional view of a clamp for a pipe according to a second embodiment of the present invention;

13 is a perspective view of a clamp for pipes according to a third embodiment of the present invention;

14 is an exploded perspective view showing the clamp shown in FIG. 13 from another side;

15 is an exemplary view illustrating various forms of incisions,

16 is a perspective view showing a state in which a large diameter round pipe or a square pipe is tightened;

17 is a perspective view illustrating a state in which a small diameter round pipe is tightened;

18 is a cross-sectional view of FIG.

19 is a sectional view of FIG. 17;

20 is a cross-sectional view illustrating main parts of the clamping state between the body and the cover according to the shape and size of the clamped pipe;

21 is an enlarged view illustrating an enlarged fastening pin;

22 is a plan view of the clamp shown in FIG.

23 and 24 are exemplary views illustrating various forms of fastening pins inserted into the body and the cover.

25 is a partially enlarged cross-sectional view of a clamp for a pipe according to a fourth embodiment of the present invention.

Hereinafter, a pipe clamp according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Example 1

FIG. 2 is a perspective view of a clamp for a pipe according to a first embodiment of the present invention, FIG. 3 is an exploded perspective view showing the clamp shown in FIG. 2 from another side, and FIG. 4 is an illustration illustrating various forms of cutting holes. 5 is a perspective view illustrating a state in which a large diameter circular pipe or a square pipe is tightened, FIG. 6 is a perspective view illustrating a state in which a small diameter circular pipe is tightened, FIG. 7 is a sectional view of FIG. 5, and FIG. 8 is a view of FIG. 6 is a cross-sectional view illustrating an enlarged fastening pin, and FIGS. 10 and 11 are exemplary views illustrating various types of fastening pins inserted into a body and a cover.

In the present embodiment, for convenience of description, a position at which the fastening pin 40 is coupled to the cover 30 as shown in FIG. 2 is referred to as 'lower', and the fastening pin 40 coupled to the cover 30. The tip position of is called 'top'.

As shown in Figures 2 and 3, the pipe clamp 10 according to the first embodiment of the present invention is typically made of a variety of materials, such as steel, resin, aluminum, etc. formed to hold a pipe such as a circular tube or a square tube As a clamp, the U-shaped body 20 in which the pipe is received and seated, and the U-shaped cover 30 and the body 20 and the cover 30 which fasten and constrain the pipe accommodated in the body 20 are fastened. It includes a fastening pin 40 that is inserted into the body 20 and the cover 30 is coupled to.

The body 20 and the cover 30 are first and second receiving

parts

21 and 31 in which a circular or rectangular pipe is seated and received, and a first body formed at one side to which the body 20 and the cover 30 are coupled. And the fastening pins 40 are inserted into the

second hinge portions

22 and 32 and the other sides of the first and second receiving

portions

21 and 31, that is, opposite sides of the first and

second hinge portions

22 and 32. And first and

second coupling parts

23 and 33 fixed in a coupled state.

The first and second

accommodating parts

21 and 31 are formed in a 'c' shape so as to share a load of the pipe with a thick iron plate material.

That is, the first and second

accommodating parts

21 and 31 are curved in the upper and lower surfaces of the first and second

accommodating parts

211 and 3 to accommodate the small and large diameter circular pipes, respectively. The first and second

curved portions

211 and 311 may include first and second

tube bent portions

212 and 312 formed to be bent to accommodate the square pipes.

The first and second

curved portions

211 and 311 are formed with a curvature according to the diameter of the small-diameter circular pipe, and a plurality of

anti-slip grooves

213 and 313 are formed at regular intervals to prevent the pipes from slipping.

Thus, when accommodating a large diameter circular pipe, the first and second

curved portions

211 and 311 are not completely in contact with the outer circumferential surface of the pipe, but are in close contact with the pipe while being deformed to widen the

anti-slip grooves

213 and 313.

The first hinge portion 22 of the body 20 includes a pair of coupling plates 221 extending in a vertical direction stepwise from one end of the first receiving portion 21. The pair of coupling plates 221 is formed by penetrating the cutting hole 222 cut in the longitudinal direction so that the hinge pin 323 provided in the second hinge portion 32 of the cover 30 is inserted.

The cutting hole 222 connects a pair of rotating holes 223 and the hinge pins 323 to move between the pair of rotating holes 223 formed along the longitudinal direction of the coupling plate 221. It is formed by a moving hole 224.

As shown in FIG. 4, the pair of rotating holes 223 are formed to protrude upward from the pin moving holes 224 as shown in (a), or as shown in (b). The center portion may be formed at 224, or may be formed to protrude downward from the pin moving hole 224 as shown in (c).

In addition, although the pin moving hole 224 is disclosed in a straight line in FIG. 4, the pin moving hole 224 may be implemented in various forms as long as the hinge pin 323 is moved, such as having a curved shape.

In addition, the cutting hole 222 may be formed by bending a predetermined width downward or upward from the inner circumferential surface in order to increase the coupling force with the hinge pin 323, and to prevent the twist of the cover 30.

The second hinge portion 32 of the cover 30 has a hinge hole formed in the pair of extension plates 321 and the pair of extension plates 321 that are bent and extended from the upper and lower surfaces of one end of the second accommodating portion 31 ( The hinge pin 323 is penetrated through the 322.

Hinge pin 323 is formed in a flat shape with a top and bottom cut in a circular cross section, the hinge hole 322 is formed in a shape corresponding to the cross section of the hinge pin 323.

Here, the circular outer circumferential surface of the hinge pin 323 functions to rotate in the rotation hole 223 of the incision hole 222, and the flat outer circumferential surface flattened through the pin moving hole 224 of the incision hole 222. Function to move. Therefore, the circular cross-sectional diameter of the hinge pin 323 has a length corresponding to the diameter of the rotating hole 223, the width of the flat cut flat has a length corresponding to the width of the pin moving hole 224.

Therefore, the pair of coupling plates 221 are inserted and overlapped between the pair of extension plates 321, the hinge pin 323 successively penetrates through the hinge hole 322 and the cutting hole 222 to act as a hinge axis. To perform.

Although the incision hole 222 is formed in the body 20 and the hinge hole 322 is formed in the cover 30 in FIGS. 2 and 3, in contrast, the incision hole 222 is formed in the cover 30. It is formed and the hinge hole 322 can be changed to be formed in the body (20).

In addition, although the pair of coupling plates 221 are formed to be inserted between the pair of extension plates 321, the pair of extension plates 321 is inserted to be inserted between the pair of coupling plates 221. May be

The present invention can accommodate both small and large diameter pipes by adjusting the width of the receiving portion formed by the body and the cover by moving the hinge pin of the cover to any one of the pair of rotating holes according to the diameter of the receiving pipe. .

As shown in FIGS. 2 and 3, the first coupling part 23 of the body 20 is bent from one end of the first receiving part 21 to have a plate shape.

In addition, the first coupling part 23 includes first and second

bent parts

24 and 25 which are formed to be bent sequentially from the front end to the center of the outer surface.

As shown in FIG. 5, the first bent part 24 is a portion in which the cam member 42 of the fastening pin 40 to be described with reference to FIG. 9 is hooked when receiving a large diameter round pipe or a square pipe. The bent portion 25 is a portion in which the cam member 42 of the fastening pin 40 hangs when receiving a small diameter circular pipe as shown in FIG. 6.

Here, the first and second

bent portions

24 and 25 are formed in a shape corresponding to each other with the cam member 42 of the fastening pin 40, as shown in FIGS. 7 and 8, and the clamp 10 toward the front end thereof. Protruding convex toward the inner side of).

Meanwhile, in the present exemplary embodiment, the first and second

curved portions

24 and 25 are formed only at the first coupling portion 23 of the body 20, but the present invention is not necessarily limited thereto.

That is, the present invention forms the first and second

bent portions

24 and 25 on both the inner surface and the outer surface of the first coupling portion 23 of the body 20 and the inner surface of the second coupling portion 33 of the cover 30. It may be changed to be curved to correspond to the first and second bends (24, 25).

Accordingly, the present invention can stably clamp the pipe accommodated between the body and the cover by improving the coupling force between the body and the cover when the cam member of the fastening pin rotates.

In addition, the first and second

bent portions

24 and 25 protrude inwardly to prevent the coupling with the cam member 42 in a state where the cam member 42 of the fastening pin 40 is coupled. One or more first and

second protrusions

241 and 251 formed may be provided.

As shown in FIGS. 2 and 3, the second coupling part 33 of the cover 30 is bent from one end of the second accommodating part 31 to have a substantially 'c' shape in cross section.

That is, the upper and lower surfaces of the second coupling portion 33 are formed to extend stepwise in the vertical direction from the upper and lower surfaces of the second accommodating portion 31, respectively.

First and second insertion holes 34 and 35 through which the fastening pin 40 is inserted, respectively, are formed in the upper and lower surfaces of the second coupling part 33.

The first insertion hole 34 has a diameter equal to or slightly larger than the tip diameter of the fastening pin 40 so that the fastening pin 40 can pass therethrough, and the second insertion hole 35 is formed of the fastening pin 40. When the tip of the insertion portion 41 passes through the second insertion hole 35 and then the insertion portion 41 and the cam member 42 are coupled, the insertion portion 41 is formed to have a size corresponding to the diameter of the insertion portion 41.

Of course, when the second insertion hole 35 is inserted into the second insertion hole while the cam member 42 of the fastening pin 40 is coupled, the cam member 42 may pass through the cam member 42. It may be formed equal to or slightly larger than the maximum diameter of.

In addition, first and second fixing

parts

36 and 37 for temporarily fixing the fastening pin 40 are formed on the upper surface of the second coupling part 33 to maintain the fastening pin 40 in an open and closed state. .

Here, as shown in FIG. 2, the handle 43 of the fastening pin 40 is coupled to the second coupling part 33 so that the first and

second coupling parts

23 and 33 may be coupled to each other. The state rotated toward the outside of the clamp 10 so as to be perpendicular.

5 and 6, the cam member 42 and the first and second

curved portions

24 and 25 are coupled to each other when the first and

second coupling portions

23 and 33 are coupled to each other. The handle portion 43 of the fastening pin 40 refers to a state in which it is rotated to be integral with the second coupling portion 33.

As shown in FIG. 3, the first fixing part 36 is directed downward so that the first stopper 361 and the fastening pin 40 which limit the maximum opening position of the fastening pin 40 maintain the maximum open state. It includes a fixing projection 362 protruding.

The second fixing portion 37 protrudes downward to maintain the closed state of the fastening pin 40 and is formed in a rib shape.

Meanwhile, in the present exemplary embodiment, the first fixing part 36 includes the first stopper 361 and the fixing protrusion 362, and the second fixing part 37 has a rib shape. It is not necessarily limited thereto.

That is, the present invention may be modified to form a plurality of fixing protrusions 362 or the fixing jaw in the first fixing portion 36, and to form one or more fixing protrusions 362 in the second fixing portion 37. It may be changed to.

3 and 9, the fastening pin 40 is formed by bending the cross section into a substantially 'b' shape in the shape of a rod.

That is, the fastening pin 40 may include an insertion part 41 inserted into the first and second insertion holes 34 and 35 of the second coupling part 33 and a cam member coupled to the center of the insertion part 41. 42 and a handle portion 43 bent in a direction perpendicular to the insertion portion 41.

The tip of the insertion portion 41 is formed to have a diameter smaller than the diameter of the first insertion hole 34, but is first impacted by an impact applied using a tool such as a hammer in a state of being coupled to the second coupling portion 33. The diameter is larger than the diameter of the insertion hole 34.

That is, the fastening pin 40 is inserted into the first and second insertion holes 34 and 35 and is deformed by the impact applied to the tip to maintain the state of being coupled to the first insertion hole 34.

Accordingly, the present invention does not form a separate structure for coupling the fastening pin to the cover, and the cover and the body by using a fastening pin of a simple structure according to the stable coupling to the front end of the fastening pin by deforming it easily Can be combined.

As shown in FIG. 9, the cam member 42 is coupled to the handle 43 with a predetermined angle, for example, about 90 °, with the insertion portion 41 as an axis, and is engaged with the cam member 42. The lower end is formed wider than the diameter of the second insertion hole 35 to limit the depth coupled to the second coupling portion (33).

Therefore, when the handle portion 43 is in the open state, the cam member 42 is convex along the length direction of the second coupling portion 33, and when the handle portion 43 rotates in the closed state, the cam member 42 is rotated. The first and

second bends

24 and 25 are stably fixed by hanging on the concave portions of the first and

second bends

24 and 25.

The present invention can stably fix the first and second bent portion formed in the first coupling portion by using a cam formed on the fastening pin when the body and the cover are coupled.

Meanwhile, in the present embodiment, the fastening pin has been described as including an insertion part, a handle part, and a cam member, but the present invention is not necessarily limited thereto.

For example, the present invention may be modified to remove the handle 43 of the fastening pin 40 and include only the insertion portion 41 and the cam member 42.

That is, as shown in FIG. 10, the present invention may be modified to form a groove 441 having a polygonal shape, for example, a square shape, at the lower end of the insertion part 44.

Therefore, the present invention can easily engage and disengage the cam member and the first and second bent portions by engaging a tool such as a ratchet handle or wrench in the groove of the insert to rotate the fastening pin.

In addition, as shown in FIG. 11, the lower end of the insertion part 45 may be modified to include a polygonal, for example, hexagonal head 451 protruding downward.

Therefore, the present invention can easily engage and release the cam member and the first and second bent portions by rotating a fastening pin by coupling a tool such as a ratchet handle, wrench, or spanner coupled to the socket to the head formed at the bottom of the insert. .

Next, the coupling relationship and the operating method of the pipe clamp according to the first embodiment of the present invention will be described in detail.

First, the fastening pin 40 is penetrated through the first and second insertion holes 34 and 35 of the cover 30, and then hits the tip of the fastening pin 40 to be larger than the diameter of the first insertion hole 34. By deforming to have a diameter, the fastening pin 40 and the cover 30 is coupled.

Subsequently, as shown in FIGS. 5 and 7, when accommodating a large-diameter circular pipe, the hinge pin 323 of the second hinge portion 32 is connected to the pin moving hole 224 of the first hinge portion 22. Thus, after moving to the front end side rotation hole 223, the pipe is positioned in the first receiving portion (21).

The cover 30 is rotated about the hinge pin 323 so that the first coupling part 23 of the body 20 and the second coupling part 33 of the cover 30 overlap each other. Then, the position of the first bent part 24 formed on the front end side of the body 20 and the positions of the first and second insertion holes 34 and 35 of the cover 30 are substantially overlapped.

The handle 43 of the fastening pin 40 coupled to the first and second insertion holes 34 and 35 of the second coupling part 33 is rotated toward the closed position.

Then, the cam member 42 of the fastening pin 40 is coupled to the concave portion formed in the center portion of the first bent portion 24 and rotated in the clockwise state while being engaged with the convex portion formed at the tip of the first bent portion 24. As a result, the binding force between the fastening pin 40 and the first and

second coupling parts

23 and 33 is improved to stably fix the pipe received between the body 20 and the cover 30.

Subsequently, as the handle portion 43 of the fastening pin 40 is caught by the second fixing portion 37 protruding in a rib shape on the lower surface of the second coupling portion 33, the present invention provides an externally generated vibration pipe. Even if it is delivered to the clamp, it can prevent the fastening pin from being arbitrarily separated from the body and the cover.

Subsequently, when the received pipe is separated, the handle 43 of the fastening pin 40 is hit by a hammer or the like so that the handle 43 rotates toward the open position beyond the second fixing part 37.

Then, as the cam member 42 of the fastening pin 40 rotates, the coupling between the cam member 42 and the first bent portion 24 of the first coupling portion 23 is released, and the first of the body 20 is released. Coupling portion 23 is separated from the fastening pin 40 and the cover 30.

However, the front end of the fastening pin 40 is deformed to have a diameter larger than that of the first insertion hole 34, so that it is prevented from being completely separated from the cover 30.

Therefore, the present invention can prevent the fastening pin is lost as the fastening pin is always coupled to the second coupling portion of the cover.

Next, in the case of accommodating the square pipe, the hinge pin 323 of the second hinge portion 32 is moved along the pin moving hole 224 of the first hinge portion 22 as in the case of accommodating a large diameter circular pipe. After moving to the hole 223, a pair of edges of the pipe are positioned at the first corner pipe bends 212 formed at both sides of the inner side of the first accommodating part 21.

The cover 30 is rotated about the hinge pin 323 so that the first coupling part 23 of the body 20 and the second coupling part 33 of the cover 30 overlap each other. At this time, the other edge pair of the pipe is located in the second corner bent portion 312 formed on both sides of the inner surface of the second receiving portion (32).

Thus, when the position of the first bent portion 24 formed on the front end side of the body 20 and the position of the first and second insertion holes 34 and 35 of the cover 30 are substantially overlapped, the second coupling portion 33 The handle 43 of the fastening pin 40 coupled to the first and second insertion holes 34 and 35 is rotated toward the closed position.

That is, the square pipes are stably fixed to the first and second square tube bent

portions

212 and 312 formed in the first and second receiving

portions

21 and 31.

Thereafter, the process of receiving and separating the square pipe is the same as the process of receiving and separating the large-diameter round pipe, and thus redundant description will be omitted.

Next, as shown in FIGS. 6 and 8, when accommodating a small diameter circular pipe, the pin moving hole 224 of the hinge pin 323 of the second hinge portion 32 is used. After moving to the rotary hole 223 adjacent to the first accommodating portion (21), the pipe is positioned in the first accommodating portion (21).

The cover 30 is rotated about the hinge pin 323 so that the first coupling part 23 of the body 20 and the second coupling part 33 of the cover 30 overlap each other. Then, the position of the second bent portion 25 adjacent to the first receiving portion 21 of the body 20 and the position of the first and second insertion holes 34 and 35 of the cover 30 are substantially overlapped.

Subsequently, the handle 43 of the fastening pin 40 coupled to the first and second insertion holes 34 and 35 of the second coupling part 33 is rotated toward the closed position.

Thereafter, the process of receiving and separating the small-diameter circular pipe is the same as the process of receiving and separating the large-diameter circular pipe, and thus redundant description will be omitted.

Example 2

Next, the pipe clamp according to the second embodiment of the present invention will be described in detail with reference to FIG. 12.

12 is a partially enlarged cross-sectional view illustrating an enlarged first and second coupling parts of a pipe clamp according to a second embodiment of the present invention.

As shown in FIG. 12, the pipe clamp according to the second embodiment of the present invention is similar to the above embodiment, except that the first and second bent portions 24 are formed on the first coupling portion 23 of the body 20. Instead of 25, first and second hook holes 24 'and 25' are formed.

And the cam member 42 'of the fastening pin 40 is formed with a locking projection 421 is coupled to the first and second hook holes 24', 25 '.

That is, the locking protrusion 421 of the cam member 42 'is rotated while being engaged in the first and second hook holes 24' and 25 'when the fastening pin 40 rotates.

Therefore, the pipe clamp according to the second embodiment of the present invention can improve the coupling force between the body and the cover by combining the fastening pin, the body and the cover by using the locking projection of the cam member and the first and second hook holes of the first coupling part. have.

Through the process as described above, the present invention adjusts the receiving space according to the diameter and shape of the pipe by using a hinge formed on one side of the body and the cover, and insert the fastening pin into the coupling portion of a simple structure to stabilize the received pipe Can be fixed with

Example 3

13 is a perspective view of a clamp for a pipe according to a third embodiment of the present invention, FIG. 14 is an exploded perspective view showing the clamp shown in FIG. 13 from another side, and FIG. 15 is an illustration illustrating various forms of cutting holes. FIG. 16 is a perspective view illustrating a tightening state of a large diameter round pipe or a square pipe, FIG. 17 is a perspective view illustrating a tightening state of a small diameter round pipe, FIG. 18 is a sectional view of FIG. 16, and FIG. 19 is a view of FIG. 17 is a cross-sectional view of the main part showing the fastening state between the body and the cover according to the shape and size of the pipe to be clamped, FIG. 21 is an enlarged view showing the fastening pin, Figure 22 is shown in FIG. 23 and 24 are exemplary views illustrating various forms of fastening pins inserted into the body and the cover.

As shown in Figure 13 and 14, the pipe clamp 10 according to the third embodiment of the present invention is typically made of a variety of materials, such as steel, resin, aluminum, etc. formed to hold a pipe such as a circular tube or a square tube As a clamp, the U-shaped body 20 in which the pipe is received and seated, and the U-shaped cover 30 and the body 20 and the cover 30 which fasten and constrain the pipe accommodated in the body 20 are fastened. It includes a fastening pin 40 that is inserted into the body 20 and the cover 30 is coupled to.

Accordingly, the body 20 and the cover 30 may be coupled or released by the rotation operation of the fastening pin 40.

The body 20 and the cover 30 are respectively formed on one side to which the first and second receiving

portions

21 and 31, the body 20 and the cover 30, to which the circular or rectangular pipe is seated and accommodated, are coupled. Fastening pins on the other side of the first and

second hinge parts

22 and 32 and the first and second receiving

parts

21 and 31 that are hinged to each other, that is, opposite sides of the first and

second hinge parts

22 and 32. The first and

second coupling parts

23 and 33 are inserted into and fixed to the coupled state.

The first and second

accommodating parts

21 and 31 are formed in a '-' shape so as to share the load of the pipe.

That is, the first and second

accommodating parts

21 and 31 are curved in the upper and lower surfaces of FIGS. 13 and 14 to accommodate the small and large diameter circular pipes, respectively. The first and second

curved portions

211 and 311 may include first and second tube bent

portions

212 and 312 formed to be bent to accommodate the square pipes.

The first and second

curved portions

anti-slip grooves

213 and 313 are formed at regular intervals to prevent the pipes from slipping.

Thus, when accommodating a large diameter circular pipe, the first and second

curved portions

anti-slip grooves

213 and 313.

As shown in FIG. 15, the pair of rotating holes 223 are formed to protrude upward from the pin moving holes 224 as shown in (a), or as shown in (b). The center portion may be formed at 224, or may be formed to protrude downward from the pin moving hole 224 as shown in (c).

In addition, although the pin moving hole 224 is illustrated in FIG. 15 in a straight form, the pin moving hole 224 may be implemented in various forms as long as the hinge pin 323 is moved, such as having a curved shape.

As shown in FIG. 14, the hinge pins 323 are formed in a flat shape cut down from the top and bottom of the circular cross section, and the hinge holes 322 are formed in a shape corresponding to the cross section of the hinge pins 323.

Although the incision hole 222 is formed in the body 20 and the hinge hole 322 is formed in the cover 30 in FIGS. 13 and 14, on the contrary, the incision hole 222 is formed in the cover 30. It is formed and the hinge hole 322 can be changed to be formed in the body (20).

As shown in FIGS. 13 and 14, the first coupling part 23 of the body 20 is bent from one end of the first accommodating part 21 to have a plate shape.

In addition, the first coupling part 23 includes first and second

bent parts

As shown in FIGS. 16 and 18, the first bent part 24 is a part to which the refractive cam part 46 of the fastening pin 40 to be described with reference to FIG. 21 when the large-diameter circular pipe or the square pipe is accommodated. The second curved portion 25 is a portion where the refractive cam portion 46 of the fastening pin 40 is hooked when receiving a small diameter circular pipe as shown in FIGS. 17 and 19.

Here, the first and second

bent portions

24 and 25 are formed in a shape corresponding to each other with the refractive cam portion 46 of the fastening pin 40, as shown in FIGS. 18 and 19, and the clamp 10 toward the front end thereof. Protruding convex toward the inner side of).

Meanwhile, in the present exemplary embodiment, the first and second

curved portions

That is, the present invention forms the first and second

bent portions

Accordingly, the present invention can stably clamp the pipe accommodated between the body and the cover by improving the coupling force between the body and the cover when the refraction cam portion of the fastening pin rotates.

In addition, the first and second

bent portions

24 and 25 protrude inwards to prevent the release of the engagement cam portion 46 from being arbitrarily released while the refractive cam portion 46 of the fastening pin 40 is engaged. One or more first and

second protrusions

241 and 251 formed may be provided.

As shown in FIGS. 13 and 14, the second coupling part 33 of the cover 30 is bent from one end of the second accommodating part 31 to have a cross-section having a substantially 'C' shape.

The first insertion hole 34 has a diameter equal to or slightly larger than the tip diameter of the fastening pin 40 so that the fastening pin 40 can pass therethrough, and the second insertion hole 35 is formed of the fastening pin 40. When the tip of the insertion portion 41 passes through the second insertion hole 35 and then the insertion portion 41 and the refractive cam portion 46 are coupled to each other, the insertion portion 41 has a size corresponding to the diameter of the insertion portion 41.

Of course, when the second insertion hole 35 is inserted into the second insertion hole 35 while the articulation cam portion 46 of the fastening pin 40 is coupled, the articulation cam portion can penetrate the articulation cam portion 46. It may be formed equal to or slightly larger than the maximum diameter of 46.

In addition, as shown in FIG. 14, the first and second coupling parts 23 are disposed on the upper surface of the second coupling part 33, which is a plate surface in which the coupling pin 40 is in surface contact with the second coupling part 33. Fastening retaining portion 38 for temporarily fixing the fastening pin 40 so that the fastening pin 40 is fixed step by step between the maximum open position and the closed position between the, 33 Is formed.

Accordingly, as shown in FIG. 16 and FIG. 17, the degree of adhesion between the first coupling portion 23 of the body 20 and the second coupling portion 33 of the cover 30 is adjusted according to the diameter of the pipe. After the fastening pin 40 is rotated, the fastening pin 40 is engaged with the fastening retaining part 38 so that the fastening state of the fastening pin 40 is stably maintained so that the machining tolerance of the pipe clamp 10 and the production tolerance of the pipe can be maintained. Even if there is a gap to compensate for the difference in the diameter can be clamped more firmly and stably pipes of various diameters and shapes.

Here, as shown in FIG. 13, the handle 43 of the fastening pin 40 is coupled to the second coupling part 33 so that the first and

second coupling parts

16 and 17, the refractive cam portion 46 and the first and second

curved portions

24 and 25 are coupled to each other when the first and

second coupling portions

As shown in FIGS. 16 and 17, the fastening retaining part 38 may include the fastening pins at the plate surface of the second fastening part 33 where the second fastening part 33 is in surface contact with the fastening pin 40. It is preferable that a plurality of concave-convex shapes are provided along the path in which 40 is rotated.

Accordingly, the plate 30 of the second engaging portion 33 which is in surface contact with the fastening pin 40 in the cover 30, the fastening holding portion 38 is formed in a plurality of concave-convex shapes along the path of the fan-shaped body 20 And the handle 43 to be described later of the fastening pin 40 can be fixed stepwise by engaging the protruding threshold of the fastening retaining part 38 between the maximum open position and the closed position between the cover 30. Even if there is a machining tolerance of (10) and a production tolerance of the pipe, it is possible to more firmly and stably clamp pipes of various diameters and shapes by supplementing the difference in the diameter, and the first coupling portion 23 and the first according to the diameter of the pipe After the rotation of the fastening pin 40 for adjusting the fastening position between the two engaging portions 33 can be maintained in a stable state.

Meanwhile, as illustrated in FIGS. 16 and 17, the fastening holding part 38 may include a stopper 39 protruding from the plate surface of the second coupling part 33 in a rib shape at at least one of both ends thereof. It is preferable to include.

Accordingly, the maximum open position and the maximum closed position between the first coupling portion 23 and the second coupling portion 33 by the fastening pin 40 may be limited by the stopper 39.

In addition, as shown in FIGS. 13 and 14, the inner side of the distal end portion of the second coupling portion 33 may be formed in a concave portion between the first and second

bent portions

24 and 25 of the first coupling portion 23. A locking step 331 is formed to be hooked, and a locking groove 332 to which the handle protrusion 431 formed at the handle 43 of the fastening pin 40 is hooked to the lower side of the front end of the second coupling part 33. ) Is formed.

Accordingly, the present invention may temporarily clamp the concave portion between the first and second bent portions of the first coupling portion at the locking jaw of the second coupling portion when clamping the pipe, and then rotate the handle to completely clamp the pipe.

And the present invention can be fixed to the locking groove formed in the second coupling portion the projection of the handle portion can prevent the fastening pin to move or rattle.

As shown in FIG. 13, the fastening pin 40 is provided on the cover 30 across the inside of the second coupling part 33 of the cover 30, and the first coupling part 23 of the body 20. Refracting cam portion 46 integrally formed at the portion penetrating through the interior of the second coupling portion 33 so as to be engaged with and disengaged), and at right angles at the front end of the portion penetrating the interior of the second coupling portion 33. The handle portion 43 is provided with a bent.

Accordingly, since the articulation cam portion 46 of the fastening pin 40 is integrally bent at the central portion of the fastening pin 40 penetrating the inside of the second coupling portion 33, the body 20 and the cover 30 are formed. ) Is coupled to the first and second bent portions (24, 25) formed in the body 20 to be coupled to provide a separate cam member to be provided on the fastening pin 40, thereby simplifying the production of products and parts By reducing the number, production costs can also be reduced.

As shown in FIGS. 13 and 21, the articulation cam portion 46 is bent in a shape of approximately 'C' at the center of the fastening pin 40 so as to be engaged with the first and

second bends

24 and 25. It is formed integrally.

Therefore, when the handle portion 43 is in the open state, the refractive cam portion 46 is convex along the longitudinal direction of the second coupling portion 33. When the handle portion 43 rotates in the closed state, the refractive cam portion 46 is rotated. The first and

second bends

24 and 25 are stably fixed by hanging on the concave portions of the first and

second bends

24 and 25.

The present invention can stably fix the first and second bent portion formed in the first coupling portion by using the refractive cam portion 46 formed on the fastening pin when the body and the cover are coupled.

Meanwhile, in the present embodiment, the fastening pin has been described as including an insertion part, a handle part, and a refractive cam part, but the present invention is not necessarily limited thereto.

For example, the present invention may be modified to remove the handle portion 43 of the fastening pin 40 and include only the insertion portion 41 and the refractive cam portion 46.

That is, as shown in FIG. 23, the present invention may be modified to form grooves 441 having a polygonal shape, for example, a square shape, at the lower end of the insertion part 44.

Therefore, the present invention can easily engage and release the articulation cam portion and the first and second bends by rotating the fastening pin by coupling a tool such as a ratchet handle or wrench to the groove of the insertion portion.

In addition, as shown in FIG. 24, the lower end of the insertion part 45 may be modified to have a polygonal, for example, hexagonal head 451 protruding downward.

Therefore, the present invention can easily engage and release the articulation cam portion and the first and second bends by engaging a tool such as a ratchet handle, wrench, or spanner coupled to the socket to the head formed at the bottom of the insertion portion to rotate the fastening pins. .

As one embodiment of the present invention, as shown in Figure 16 and 17, the handle portion 43 of the fastening pin 40, it is preferable that the handle protrusion 431 is formed protruding.

Accordingly, the handle protrusion 431 is engaged with the fastening holding part 38 so that the fastening pin 40 can be fixed stepwise between the maximum open position and the closed position between the first and

second coupling parts

23 and 33. have.

In addition, as shown in Figure 21, the fastening pin 40 is formed in a rod-shaped bent in a substantially 'b' shaped cross section.

Meanwhile, as shown in FIG. 22, the fastening pin 40 is inserted into the first and second insertion holes 34 and 35 of the second coupling part 33 and passes through the second coupling part 33. The insertion portion 41 is an end portion, and the insertion portion 41 is provided with a head portion 47 provided with a diameter larger than the insertion portion 41.

The head 47 may be formed integrally with the fastening pin 40 or may be provided as a separate washer member.

On the other hand, as shown in FIG. 22, between the plate side opposite the plate surface on which the fastening retaining portion 38 is formed in the second coupling portion 33 of the cover 30 and the head 47 of the fastening pin 40. The elastic member 50 is provided.

The elastic member 50 is installed between the plate surface of the cover 30 and the head 47 of the fastening pin 40 so that the convex portions of the pair of plate-shaped members provided in a bent shape in a substantially 'U' shape abut. do.

That is, the elastic member 50 may be provided with a wave spring washer bent in the vertical direction.

Accordingly, even if vibration occurs in the pipe, the clamping state of the pipe may be maintained firmly, and vibration may be attenuated by the elastic member 50 having elasticity to minimize vibration. In addition, since the handle 43 of the fastening pin 40 is hung on the fastening holding part 38 and the insertion part 41 is forcibly fitted by the elastic member 50, the fastening of the fastening pin 40 is released. In order to press and press the elastic member 50, the separation and separation of the fastening pin 40 can be prevented by the elastic member 50.

Next, the coupling relationship and the operating method of the pipe clamp according to the third embodiment of the present invention will be described in detail.

Next, as shown in FIGS. 16 and 18, when accommodating a large diameter circular pipe, the hinge pin 323 of the second hinge portion 32 is used as the pin moving hole 224 of the first hinge portion 22. Thus, after moving to the front end side rotation hole 223, the pipe is positioned in the first receiving portion (21).

Then, the fastening cam portion 46 of the fastening pin 40 is coupled to the concave portion formed in the center portion of the first bent portion 24 is fastened as it is engaged in the convex portion formed at the front end of the first bent portion 24 The binding force between the pin 40 and the first and

second coupling parts

Subsequently, as the handle portion 43 of the fastening pin 40 is caught by the stopper 39 protruding in a rib shape on the lower surface of the second coupling portion 33, the present invention provides vibrations generated from the outside to the pipe or clamp. Even when delivered, the fastening pin can be prevented from being arbitrarily separated from the body and the cover.

Subsequently, in the case of separating the received pipe, when the handle 43 of the fastening pin 40 is lifted up using a tool such as a driver, the handle 43 is rotated beyond the stopper 39 toward the open position.

Then, as the refraction cam portion 46 of the fastening pin 40 rotates, the coupling between the refraction cam portion 46 and the first bent portion 24 of the first coupling portion 23 is released and the first of the first body 20 is removed. Coupling portion 23 is separated from the fastening pin 40 and the cover 30.

portions

212 and 312 formed in the first and second receiving

portions

21 and 31.

Next, as shown in FIGS. 17 and 19, when accommodating a small-diameter circular pipe, the hinge pin 323 of the second hinge portion 32 moves the pin moving hole 224 of the first hinge portion 22. After moving to the rotary hole 223 adjacent to the first accommodating portion (21), the pipe is positioned in the first accommodating portion (21).

FIG. 20 (a) is a sectional view showing the main parts of the fastening state between the body 20 and the cover 30 when the large-diameter circular pipe is clamped by the clamp 10 according to the present invention, and FIG. 20 (b) Is a cross-sectional view of the main part showing a fastening state between the body 20 and the cover 30 when the small-diameter circular pipe is clamped by the clamp 10 according to the present invention, Figure 20 (c) is in accordance with the present invention Fig. 1 is a sectional view showing the main part of the fastening state between the body 20 and the cover 30 when the circular pipe (48 mm only) is clamped by the clamp 10.

Example 4

Next, the pipe clamp according to the fourth embodiment of the present invention will be described in detail with reference to FIG. 25.

25 is a partially enlarged cross-sectional view illustrating an enlarged first and second coupling parts of a pipe clamp according to a fourth exemplary embodiment of the present invention.

As shown in FIG. 25, the pipe clamp according to the fourth embodiment of the present invention is similar to the above embodiment, except that the first and second bent portions 24 are formed on the first coupling portion 23 of the body 20. Instead of 25, first and second hook holes 24 'and 25' are formed.

A locking protrusion 461 coupled to the first and second hook holes 24 ′ and 25 ′ is formed at the refractive cam part 46 ′ of the fastening pin 40.

That is, the locking projection 461 of the refractive cam portion 46 'is rotated while being engaged in the first and second hook holes 24' and 25 'during the rotation of the fastening pin 40.

Therefore, the pipe clamp according to the fourth embodiment of the present invention may improve the coupling force between the body and the cover by combining the fastening pin, the body and the cover by using the hooking protrusion of the articulation cam part and the first and second hook holes of the first coupling part. Can be.

Meanwhile, in the above embodiments, the clamping of the large-diameter and small-diameter circular pipes and the pipes using one clamp has been described. However, the present invention may be changed to a dedicated clamp for clamping a pipe having any diameter or shape.

That is, the present invention may be used as a dedicated clamp for clamping the pipe by forming only one bent portion according to the diameter of the pipe clamping the first coupling portion.

As described above, the present invention uses the hinge portion formed on one side of the body and the cover to adjust the accommodation space according to the diameter and shape of the pipe.

That is, the present invention by adjusting the width of the receiving space formed by the body and the cover by moving the hinge pin of the cover to any one of the pair of rotating holes in accordance with the diameter of the pipe to accommodate, to accommodate both small and large diameter pipe can do.

And the present invention can accommodate the square pipe by fixing the corners of the square pipe using the pipe bent portion formed on both sides of the receiving pipe is a square pipe.

Accordingly, the present invention can accommodate pipes of various diameters and shapes, such as small and large diameter round pipes and square pipes.

And the present invention can be stably fixed to the pipe received by inserting the fastening pin to the coupling portion of a simple structure.

In particular, the present invention by coupling the cam member to the central portion of the fastening pin to secure the first and second bent portion formed in the body, thereby improving the coupling force of the body and the cover.

On the other hand, the present invention may form the first and second hook holes in the body instead of the first and second bent portion and may form a locking protrusion at the tip of the cam member to improve the binding force between the body and the cover.

In addition, the present invention can be easily coupled to the fastening pin and the cover by deforming the tip of the male fastening pin through which the fastening pin is coupled to the first and second insertion hole of the cover, the fastening pin is coupled to the cover It can prevent the fastening pin from being lost by storing it.

In addition, the present invention forms a fastening holding portion in a plurality of concave-convex shape along the path of the fan on the plate surface of the second engaging portion which is in contact with the fastening pin in the cover step by step fastening pin between the maximum open position and the closed position between the body and the cover Can be fixed

Accordingly, the present invention can compensate for the difference in diameter even though there is a machining tolerance of the pipe clamp and a production tolerance of the pipe, so that the pipes of various diameters and shapes can be clamped more stably and stably.

And the present invention can stably maintain the fixed state after the rotation of the fastening pin for adjusting the fastening position between the first coupling portion and the second coupling portion according to the diameter of the pipe.

In addition, the present invention is provided with an elastic member between the plate and the opposite side of the plate surface formed with the fastening retaining portion in the second coupling portion of the cover and the head of the fastening pin to secure the clamping state of the pipe even if vibration is generated in the pipe It can be maintained and the vibration can be reduced by the elastic member to minimize the vibration.

In addition, the present invention can prevent the fastening pin is easily separated and detached by the elastic member because it must press the elastic member to release the coupling of the fastening pin.

In addition, according to the present invention, as the refractive cam portion of the fastening pin is integrally bent at the center of the fastening pin penetrating the inside of the second coupling portion, the first and second bent portions formed on the body are fixed so that the body and the cover are coupled to each other. There is no need to provide a separate cam to be provided on the fastening pin, and the production of the product can be simplified and the number of parts can be reduced to reduce the production cost.

Claims

The body on which the pipe is received and seated,

A cover which tightens and constrains the pipe accommodated in the body;

A fastening pin inserted into a portion where the body and the cover are coupled to fasten the body and the cover,

The body and the cover are each

First and second receptacles in which pipes are seated and received;

First and second hinge parts formed on one side of the first and second receiving parts and hinged to each other;

It is formed on the other side of the first and second accommodating portion and includes a first and second coupling portion which is fixed in a state in which the fastening pin is inserted and coupled,

The fastening pin is coupled to the center portion of the pipe clamp, characterized in that it comprises a cam member coupled to and released from the first coupling portion.
The method of claim 1,

The first coupling part is a pipe clamp, characterized in that it has a first bend and a second bent portion formed in the center portion of the outer surface is bent in order from the front end to engage with the cam member.
The method of claim 2,

And the first and second bent portions have first and second protrusions protruding toward the cam member, respectively.
The method of claim 1,

The first coupling portion has a first and second hook hole to which the cam member is sequentially coupled from the front end to the central portion of the outer surface,

The cam member has a clamp for pipe, characterized in that it comprises a locking projection coupled to the first and second hook hole.
The method according to any one of claims 1 to 4,

The second coupling portion has first and second insertion holes into which the fastening pins are inserted, respectively, on the upper and lower surfaces thereof.

The tip of the fastening pin is formed with a diameter smaller than the diameter of the first insertion hole, it is priced in the state inserted into the first and second insertion hole is characterized in that the deformation larger than the diameter of the first insertion hole Pipe clamps.
The method of claim 5,

The fastening pin is inserted into the first and second insertion hole and

Clamp for a pipe, characterized in that it comprises a handle portion formed to be bent at a right angle with the insertion portion.
The method of claim 6,

The second coupling portion and the first fixing portion for limiting the maximum opening position of the fastening pin on the lower surface

And a second fixing part fixed to the closed position of the fastening pin.
The method of claim 5,

The fastening pin has an insertion portion inserted into the first and second insertion holes,

The lower end of the insertion portion is a pipe clamp, characterized in that the groove is formed by recessed.
The method of claim 5,

The fastening pin has an insertion portion inserted into the first and second insertion holes,

Clamp for a pipe, characterized in that the lower end of the insert is formed by protruding polygonal head.
The method according to any one of claims 1 to 4,

The first and the second receiving portion is each formed in a 'c' shape,

First and second protrusions protruding outwardly or inwardly on the sides,

First and second curved portions that are curved to accommodate small and large diameter circular pipes on the top and bottom surfaces thereof, respectively;

Pipe clamps, characterized in that it comprises a first and a second angled tube bent to be formed to receive a square pipe at both ends of the first and second curved portion.
The method of claim 10,

The first hinge portion has a pair of coupling plates formed side by side spaced apart by a predetermined interval in the vertical direction to one end of the first receiving portion,

The pair of coupling plates are formed through the incision hole cut in the longitudinal direction so that the hinge pin provided in the second hinge portion is inserted,

The second hinge portion includes a pair of extension plates that are bent and extended from the upper and lower surfaces of one end of the second receiving portion;

Pipe clamp, characterized in that it comprises a hinge pin coupled to pass through the hinge hole formed in the pair of extension plates.
The method of claim 11,

The cutting hole is a pair of rotary holes formed along the longitudinal direction of the coupling plate and

Clamp for a pipe, characterized in that it comprises a pin moving hole for connecting between the pair of rotating holes.
The method of claim 11,

The first and second curved parts of the pipe clamp, characterized in that formed with a curvature according to the diameter of the small diameter circular pipe.
The method of claim 13,

Pipe clamps, characterized in that a plurality of anti-slip grooves are formed in the first and second curved portion at regular intervals.
The body on which the pipe is received and seated,

A cover which tightens and constrains the pipe accommodated in the body;

A fastening pin inserted into a portion where the body and the cover are coupled to fasten the body and the cover,

The body and the cover, respectively, the first and second receiving portion for seating and receiving the pipe,

First and second hinge parts formed on one side of the first and second receiving parts and hinged to each other;

It is formed on the other side of the first and second accommodating portion and includes a first and second coupling portion which is fixed in a state in which the fastening pin is inserted and coupled,

A fastening holding part is formed on a plate surface which is in surface contact with the fastening pin at the second fastening part so that the fastening pin can be fixed stepwise between the maximum open position and the close position between the first and second fastening parts. Clamp for pipe.
The method of claim 15,

The body and the cover are coupled or released by the rotation of the fastening pins,

The fastening holding part is a pipe clamp, characterized in that provided in a plurality of concave-convex shapes along the path of the fastening pin is rotated on the plate surface of the second coupling portion that the second coupling portion is in surface contact with the fastening pin.
The method of claim 16,

The fastening holding part includes a stopper protruding from the plate surface of the second coupling part at at least one of both ends.
The method of claim 16,

A locking jaw is formed on the inner side of the distal end of the second coupling part so as to be hooked to the concave portion between the first and second bent portions of the first coupling part, and is formed on the handle portion of the fastening pin on the outer side of the distal end of the second coupling part. Clamp for pipe, characterized in that the locking groove is formed is the handle projection is hanged.
The method of claim 15,

The fastening pin is provided on the second coupling portion across the inside of the second coupling portion,

And a refraction cam portion that is integrally refracted at a portion penetrating through the inside of the second coupling portion to be engaged with and released from the first coupling portion.
The method of claim 19,

The fastening pin further includes a head portion provided at an end penetrated across the second coupling portion,

Clamp for a pipe, characterized in that the elastic member is provided between the plate side opposite the plate surface on which the fastening holding portion is formed in the second coupling portion and the head of the fastening pin.