JP3205547U - Pipe connection bracket - Google Patents

Abstract

The present invention provides a pipe coupling fitting that can couple two pipes coaxially and that can perform the coupling operation easily and reliably. A pipe connection fitting 1 includes a semi-circular first clamp member 2 and a second clamp member 3 which are fitted to flanges 53 and 55 to be abutted with each other. The base end portions of the clamp members 2 and 3 are rotatably attached via the hinge shaft 4, and the distal end portions of the clamp members 2 and 3 are detachably attached via the fastening members 5. A compression coil spring 6 is provided between the base end portions of the clamp members 2 and 3 to urge the clamp members 2 and 3 in a direction in which the distal ends of the clamp members 2 and 3 are always closed. [Selection] Figure 1

Description

  The present invention relates to a pipe connecting bracket for connecting two pipes coaxially.

  Conventionally, pipe fittings for connecting two pipes coaxially are widely known. In general, when pipes are connected using a pipe connecting metal fitting, first, flange portions provided at end portions of two pipes are abutted. Next, the pipe connection fitting is attached to the abutted flange portion, and the pipes are connected.

  As a conventional pipe connecting metal fitting, there is one having the following configuration. This pipe connecting bracket includes a pair of semicircular clamp members whose base end portions are rotatably connected and whose front end portions can be opened and closed, and the flange portions of the pipes that are provided and abutted on the front end side of each clamp member. A fastening member for fastening is provided.

By the way, in the conventional pipe coupling fitting, when each clamp member is mounted on the flange portion of the pipe and each flange portion is tightened by the tightening member, the operator holds each clamp member on one side so that each clamp member does not open. It is necessary to open and close the tightening member with one hand while holding it down by hand, and the pipe connection work is complicated.
In particular, when the pipe to be connected is a long pipe, or when the pipe to be connected is a large-diameter pipe, two persons, an operator who holds the pipe and an operator who attaches the fitting to the pipe Therefore, the work becomes more complicated, and there has been a demand for improvement of the pipe fitting.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a pipe connection fitting that can connect two pipes coaxially and can easily and reliably connect the two pipes.

  In order to achieve the above object, a pipe fitting according to the present invention includes a flange portion provided at an end portion of a first pipe and a flange portion provided at an end portion of a second pipe. A pipe coupling fitting to be coaxially connected, a semicircular first clamp member in which each flange portion is fitted to an inner peripheral portion, and a semicircle in which each flange portion is fitted to an inner peripheral portion A second clamp member having a shape, and a base end portion of each clamp member is rotatably attached via a hinge shaft, and a distal end portion of each clamp member is detachably attached via a tightening member, A spring member that biases each clamp member in a direction in which the distal end side of each clamp member is always closed is provided between the base end portions of each clamp member.

According to this configuration, the operator can connect the flange portions of the two pipes arranged coaxially with each clamp member. Since each clamp member is biased in the direction in which the tip end side of each clamp member closes by the biasing force of the spring member, each clamp member is opened with one hand, and each clamp member is automatically attached to the flange portion of each pipe. Therefore, the pipe can be easily connected.
In addition, after the clamp members are fitted to the flange portions, the distal end side of each clamp member can be coupled with the tightening member, so that the pipe is securely connected.

Preferably, according to the present invention, in the pipe coupling fitting, a rotation operation knob for rotating the clamp members in a direction to open a distal end side of the clamp members at a base end portion of the clamp members. Are formed respectively.
According to this configuration, since the operator can hold each rotary operation knob part with the thumb and index finger of one hand and rotate each clamp member to open and close, the pipe can be connected more easily. .

Preferably, according to the present invention, in the pipe fitting, the tightening member includes a bolt whose base end is rotatably supported by a support shaft at a distal end portion of the first clamp member, and a distal end of the second clamp member. And a clamping knob screwed into the tip of the bolt inserted into the bolt latching section, and each clamping member is rotated by rotating the clamping knob. The flange portion of each pipe fitted between them is fastened and fixed.
According to this configuration, since the flange portion of each pipe can be fastened and fixed by rotating the tightening knob, the pipe can be connected reliably.

  According to the present invention, it is possible to provide a pipe coupling fitting that can couple two pipes coaxially and perform the coupling operation easily and reliably.

It is a side view of a pipe connection metal fitting concerning an embodiment of the present invention, and is a figure showing the state where the 1st clamp member and the 2nd clamp member of a pipe connection metal fitting are closed. It is a side view of a pipe connection metal fitting, and is a figure showing the state where the 1st clamp member and the 2nd clamp member of a pipe connection metal fitting are opened. It is a front view of a pipe connection metal fitting, and is a figure showing the state where the 1st clamp member and the 2nd clamp member of a pipe connection metal fitting are closed. It is a front view of a pipe connection metal fitting, and is a figure showing the state where the 1st clamp member and the 2nd clamp member of a pipe connection metal fitting are opened. It is an expanded vertical sectional view which shows the state which connected two pipes with the pipe connection metal fitting which concerns on embodiment of this invention.

FIG. 1 is a side view of a pipe connection bracket according to an embodiment of the present invention, and shows a first clamp member and a second clamp member of the pipe connection bracket. It is a figure which shows the state by which is closed. FIG. 2 is a side view of the pipe connection fitting, and shows a state where the first clamp member and the second clamp member of the pipe connection fitting are opened. FIG. 3 is a front view showing a state in which the first clamp member and the second clamp member of the pipe coupling fitting are closed. FIG. 4 is a front view showing a state in which the first clamp member and the second clamp member of the pipe coupling fitting are opened. FIG. 5 is an enlarged longitudinal sectional view showing a state in which two pipes are connected by a pipe connecting bracket according to an embodiment of the present invention.

(pipe)
The first pipe 50 and the second pipe 51 connected by the pipe connection fitting 1 according to the present embodiment are made of rubber or the like and have flexibility.
A cylindrical connecting portion 52 made of metal or the like is integrally attached to the end portion of the first pipe 50. The connecting portion 52 is formed with a disk-like flange portion 53.
A cylindrical connecting portion 54 made of metal or the like is also integrally attached to the end of the second pipe 51. A disk-like flange portion 55 is formed in the connecting portion 54 in the same manner as the connecting portion 52 of the first pipe 50.
The flange portion 53 of the first pipe 50 and the flange portion 55 of the second pipe 51 are abutted, and the first pipe 50 and the second pipe 51 are connected coaxially.

  If a seal member (not shown) is interposed between the flange portions 53 and 55, the adhesion between the pipes 50 and 51 is enhanced. Moreover, the pipe connected by the pipe connection metal fitting 1 concerning embodiment of this invention may be made from metals, such as aluminum, or resin, and may have rigidity.

(Whole structure of pipe connection bracket)
The pipe connecting bracket 1 includes a semicircular first clamp member 2 in which the substantially half circumferences of the flange portions 53 and 55 to be fitted are fitted, and each flange portion 53 in which the first clamp member 2 is not fitted. 55 has a semicircular second clamp member 3 into which the remaining substantially half circumference is fitted.

  The proximal end portion of the first clamp member 2 and the proximal end portion of the second clamp member 3 are rotatably attached via the hinge shaft 4, and the distal end portion of the first clamp member 2 and the distal end portion of the second clamp member 3 are mounted. Is detachably attached via a tightening member 5.

  A spring member that biases each clamp member 2, 3 between the proximal end portion of the first clamp member 2 and the proximal end portion of the second clamp member 3 in a direction in which the distal end side of each clamp member 2, 3 is always closed. A compression coil spring 6 is provided.

(Clamp member)
The first clamp member 2 has a U-shaped cross section made of sheet metal, and is provided with a pair of side plate portions 2A and 2A facing each other. The second clamp member 3 also has a U-shaped cross section made of sheet metal, and is provided with a pair of side plate portions 3A and 3A facing each other.
A connecting piece 7 is formed on the base end portion of the first clamp member 2 so as to protrude inward. In addition, the connecting piece 8 is also formed at the base end portion of the second clamp member 3 so as to protrude inward.
The connecting piece portions 7 and 8 are rotatably attached by a hinge shaft 4, and the proximal end portion of the first clamp member 2 and the second clamp member 3 has the hinge shaft 4 so that the distal end portion can be opened and closed. It is pivotally attached to the center.

  A pair of rotational operation knobs for rotating the clamp members 2 and 3 around the hinge shaft 4 to open the distal end side at the base end of the first clamp member 2 and the base end of the second clamp member 3 9, 10 is formed so as to protrude outward.

(Spring member)
The first clamp member 2 is biased by the biasing force of the compression coil spring 6 so as to rotate about the hinge shaft 4 in the direction of arrow A1 in FIG. Further, the second clamp member 3 is also biased by the biasing force of the compression coil spring 6 so as to rotate about the hinge shaft 4 in the direction of arrow B1 in FIG. In other words, the clamp members 2 and 3 are urged by the urging force of the compression coil spring 6 in the direction in which the distal end portions of the clamp members 2 and 3 are always closed.

  In the present invention, a leaf spring may be used in place of the compression coil spring 6, as long as the urging force always works in the direction in which the distal end side of each clamp member 2, 3 is closed, and the type of spring member is limited. Not.

(Tightening member)
The tightening member 5 includes a bolt 13 having a base end pivotally supported by a support shaft 12 on a pair of bearing pieces 11A and 11A formed to face the distal end of the first clamp member 2. ing. The bolt 13 is screwed with a tightening knob 14 for fastening the flange portions 2 and 3 together by connecting the tip portions of the clamp members 2 and 3 to the tip portion of the bolt 13.

  A bolt hooking portion 15 into which a bolt 13 is inserted is provided at the distal end portion of the second clamp member 2. The bolt latching portion 15 includes a pair of side plate portions 15A and 15A facing each other, and is configured such that the bolt 13 is inserted between the side plate portions 15A and 15A.

  When the front end portion of the first clamp member 2 and the front end portion of the second clamp member 3 are coupled, the bolt 13 is inserted between the pair of latching piece portions 15A and 15A. Then, while screwing the tightening knob 14, the base end portion 14A of the tightening knob 14 is engaged with and pressed against the end edges 15B and 15B of the pair of side plate portions 15A and 15A. Thereby, the front-end | tip part side of each clamp member 2 and 3 is couple | bonded.

(Connection of two pipes by pipe connection bracket)
First, while loosening the tightening knob 14 that constitutes the tightening member 5 of the pipe fitting 1, the engagement between the base end portion 14A of the tightening knob 14 and the edges 15B and 15B of the pair of latching piece portions 15A and 15A. Release state.

  Next, the bolt 13 is rotated in the direction of the arrow C1 in FIG. 1 around the support shaft 12, and the bolt 13 is pulled out from between the pair of latching pieces 15A and 15A. At this time, since the tip end side of each clamp member 2, 3 is closed by the biasing force of the compression coil spring 6, each clamp member 2, 3 does not open. Therefore, the pulling-out operation of the bolt 13 can be easily performed.

  Next, the flange portion 53 of the first pipe 50 and the flange portion 55 of the second pipe 51 are abutted so that the pipes 50 and 51 are coaxial.

Next, the operator hooks a pair of rotary operation knobs 9, 10 provided at the base ends of the clamp members 2, 3 of the pipe connection fitting 1 between the thumb and index finger of one hand, and focuses on the hinge shaft 4. The clamp members 2 and 3 are rotated in the directions of arrows A2 and B2 in FIG. 1 against the urging force of the compression coil spring 6, respectively. If it does so, the front end side of each clamp member 2 and 3 will be in the open state, as shown in FIG.
The 1st clamp member 2 and the 2nd clamp member 3 are located in the part of each flange part 53 and 55 faced | matched, maintaining each clamp member 2 and 3 in the open state.

  Next, when the rotation operation of the clamp members 2 and 3 in the directions of the arrows A2 and B2 in FIG. 1 by the rotation operation knobs 9 and 10 is released, the clamp members 2 and 3 are caused by the urging force of the compression coil spring 6, It rotates automatically in the direction (arrow A1 direction and arrow B1 direction in FIG. 1) which the front end side closes around the hinge shaft 4. By the rotation of the clamp members 2 and 3, the clamp members 2 and 3 can be automatically fitted to the flange portions 53 and 55. The flange portions 53 fitted to the clamp members 2 and 3 are sandwiched between the side plate portions 2A and 2A of the first clamp member 2, and are sandwiched between the side plate portions 3A and 3A of the second clamp member 3. .

Next, the bolt 13 is rotated about the support shaft 4 in the direction of arrow C2 in FIG. 2, and the bolt 13 is inserted between the pair of latching pieces 15A and 15A. Then, while screwing the tightening knob 14, the base end portion 14 </ b> A of the tightening knob 14 is engaged and pushed into the end edges 15 </ b> B and 15 </ b> B of the pair of latching piece portions 15 </ b> A and 15 </ b> A.
Thereby, the front-end | tip part side of each clamp member 2 and 3 is couple | bonded, and each flange part 53 and 55 is clamped and fixed. That is, the two pipes 50 and 51 are connected coaxially.

  As described above, according to the pipe coupling fitting 1 of the present embodiment, the distal end side of each of the clamp members 2 and 3 is urged by the compression coil spring 6 in the direction to be always closed. Accordingly, when the clamp members 2 and 3 are opened and the clamp members 2 and 3 are positioned at the flange portions 53 and 55 and then the opening operation state of the clamp members 2 and 3 is opened, the clamp members 2 and 3 are opened. 3 is automatically fitted to the flange portions 53 and 55 by the urging force of the compression coil spring 6.

  Therefore, as before, after mounting each clamp member, it is necessary for the operator to rotate the tightening member with the other hand while holding the clamp member with one hand so that the clamp member does not open. The pipe connection fitting 1 can be attached to the flange portions 53 and 55 with one hand, and the pipes 50 and 51 can be connected easily and reliably.

  In particular, even when the pipe to be connected is a long pipe, or the pipe to be connected is a large-diameter pipe, the worker holds the pipe with one hand and wears the pipe connection fitting 1 with the other hand. Can connect pipes by one person,

  Further, since the operator can handle the clamp members 2 and 3 with one hand, the operator can hold the pipes 50 and 51 with the other hand, and the operator can connect the pipes 50 and 51 in a stable posture. Work can be done.

  Further, in the operation of opening each clamp member 2, 3, the operator can open each clamp member 2, 3 by opening the pair of rotary operation knobs 9, 10 with the thumb and index finger of one hand, 50 and 51 can be quickly connected.

  In addition, according to the pipe connection fitting 1 of the present embodiment, the distal end portions of the clamp members 2 and 3 fitted in the flange portions 2 and 3 are coupled by rotating the tightening knob 14 constituting the tightening member 5. And since each flange part 2 and 3 can be fastened and fixed, the connection operation | work of the pipes 50 and 51 can be performed reliably.

  The present invention is not limited to the embodiment described above. That is, those skilled in the art may make various changes, combinations, sub-combinations, and alternatives to the components of the above-described embodiments within the technical scope of the present invention or an equivalent scope thereof.

  The present invention can be applied to a pipe coupling fitting that couples two pipes coaxially.

1 ······································································ First clamp member 3・ ・ ・ ・ ・ ・ ・ ・ Second clamp member 4 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Hinge shaft 5 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Tightening member 6 ··········· Compression coil spring ······· Support shaft 13 ·················································································· ································ 50 Pipe 53, 55 ... Flange

Claims (3)

A pipe connection fitting for connecting the pipes coaxially by abutting a flange provided at an end of the first pipe and a flange provided at an end of the second pipe,
A semi-circular first clamp member in which each of the flange portions is fitted to an inner peripheral portion;
A semi-circular second clamp member in which each flange portion is fitted to an inner peripheral portion;
Have
A base end portion of each clamp member is rotatably attached via a hinge shaft, and a tip end portion of each clamp member is detachably attached via a tightening member,
A pipe coupling fitting provided with a spring member that biases each clamp member in a direction in which a distal end side of each clamp member is always closed between base end portions of the clamp members.   2. The pipe connection according to claim 1, wherein a rotation operation knob for rotating each clamp member in a direction to open a distal end side of each clamp member is formed at a base end portion of each clamp member. Hardware. The tightening member includes a bolt whose base end is rotatably supported by a support shaft at a distal end portion of the first clamp member, a bolt retaining portion provided at a distal end portion of the second clamp member, and the bolt engagement portion. It has a tightening knob screwed to the tip of the bolt to be inserted into the stop, and the flange portion of each pipe fitted between the clamp members is fastened and fixed by rotating the tightening knob. The pipe coupling metal fitting according to claim 1 or 2.

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