JP6044998B2 - Pipe fitting and its female pipe fitting member - Google Patents

Description

  The present invention relates to a pipe joint suitable for, for example, fluid food piping and a female pipe joint member used therefor.

  In the food manufacturing industry, pipes through which fluid foods such as beverages are likely to propagate bacteria usually have to be decomposed and washed after each operation, and therefore the pipes need to be easily disassembled. For this reason, various pipe joints for facilitating such disassembly and cleaning have been developed.

  For example, Japanese Patent Application Laid-Open No. 2014-142011 (Patent Document 1) discloses a male pipe joint member, a female pipe joint connected to the male pipe joint member, and a cylindrical wall that receives the male pipe joint member; The cylindrical wall is attached to the outer peripheral surface of the cylindrical wall so as to extend in the circumferential direction, and a part of the cylindrical wall extends through an opening provided so as to penetrate the cylindrical wall in the radial direction and is received in the cylindrical wall. A female having a metal fastening belt tightened around the cylindrical wall and engaged with the male pipe joint member to fix the male pipe joint member to the cylindrical wall. A pipe joint comprising a mold pipe joint member is disclosed. In this pipe joint, the male pipe joint member is inserted into the female pipe joint member, and the fastening tool rotatably attached to the cylindrical wall is engaged with both ends of the fastening belt and rotated. The fastening belt can be fastened and unfastened, so that the piping can be easily disassembled and connected, and thus the above-described cleaning can be easily performed.

JP2014-142011

  The pipe joint disclosed in Patent Document 1 is excellent in that it allows easy disassembly and connection of the pipe, but in order to perform sufficient cleaning, the circumference of the cylindrical wall of the female pipe joint member is It is necessary to remove the fastening belt attached so as to surround the tubular wall. Therefore, it is desired that the fastening belt can be easily attached to and detached from the tubular wall. It is an object of the present invention to provide a female pipe joint having a fastening belt that can be easily attached and detached, and a pipe joint having the female pipe joint.

That is, the present invention provides a cylindrical wall that receives a male pipe fitting member,
Removably attached to the outer peripheral surface of the cylindrical wall, extends in the circumferential direction of the cylindrical wall, and partially extends through an opening provided to penetrate the cylindrical wall in the radial direction. A metal clamp for fastening the male pipe fitting member to the cylindrical wall by being clamped around the cylindrical wall in a state of engaging with the male pipe fitting member received in the cylindrical wall. Wearing belt,
A female pipe fitting member comprising:
The cylindrical wall includes a mounting protrusion having a shaft portion protruding radially on the outer peripheral surface thereof and a head portion at the tip of the shaft portion;
A mounting portion having a mounting hole for allowing the mounting protrusion to pass from the back surface facing the outer peripheral surface of the cylindrical wall to the surface opposite to the back surface, and the mounting portion. A pair of tightening parts set to extend from both sides of the cylindrical body and extend in the circumferential direction of the cylindrical body,
The first end portion and the second end portion engage with the first engaging portion and the second engaging portion, respectively, provided at a certain interval on one side portion of the attaching portion. As a result, a mounting wire member fixed to the mounting portion is attached, and the mounting wire member extends from the first end so as to be in contact with the mounting portion, and is outside the mounting hole. Crossing the mounting portion through, and folding back to reach the second end portion, and a portion that is folded back to the second end portion is configured to cross the mounting hole. Having a wire part,
In a state where the mounting protrusion is passed through the mounting hole of the fastening belt, the part of the wire portion is engaged with one side surface of the shaft portion and displaced outward in the radial direction of the shaft portion. The mounting wire member is elastically deformed to urge the fastening belt, and the edge of the mounting hole is pressed against the mounting protrusion from the side opposite to the one side surface of the shaft portion, The mounting projection is clamped by the edge of the mounting hole and the part of the wire portion, and the fastening belt is held in the axial direction with respect to the mounting projection,
The mounting wire member is deformed by applying an external force, and the part of the wire portion is displaced radially outward from the one side surface of the shaft portion to be seen from the head as viewed in the axial direction. Provided is a female pipe joint member which is disengaged from the overlapping position to the non-overlapping position so that the holding of the fastening belt with respect to the mounting protrusion can be released in the axial direction.

  In this female pipe joint member, the fastening belt can be removed by the operator applying force to the mounting wire member to deform it, and the fastening hole for mounting the fastening belt is formed in the mounting protrusion on the cylindrical wall. Since the fastening belt can be attached by being fitted to, the attachment and removal of the fastening belt can be easily performed.

In particular,
An interval between the first end portion and the second end portion of the wire member for attachment not attached to the fastening belt is between the first engagement portion and the second engagement portion. The first end portion and the second end portion can be widened so as to be engaged with the first engagement portion and the second engagement portion.
Further, the wire portion extends along the surface from the first end engaged with the first engagement portion, crosses the attachment portion through the outside of the attachment hole, is folded and A portion reaching the second end can extend along the back surface of the fastening belt.
By doing in this way, attachment of the fastening belt by the 1st end part and the 2nd end part becomes solid, and it becomes possible to make attachment of the wire member for attachment to the fastening belt stable. To do.

  Further, the edge of the mounting hole can be configured to be pressed against the side surface of the head. By doing so, it is possible to remove the fastening belt from the cylindrical wall more easily by separating the part of the wire part from the side surface of the shaft part with which the wire part is engaged. To do.

  The wire portion may be configured to extend from the first end portion and be turned back into at least one loop shape before reaching the second end portion. By providing the loop shape, it is possible to increase the flexibility of the attachment wire member and to allow the operator to more easily deform the attachment wire member and to remove the fastening belt from the cylindrical wall.

Further, the mounting wire member has the first end engaged with the first engagement portion so that the part of the wire portion is displaced outward from the one side surface of the shaft portion in the radial direction. It can be made to be rotatable around the part.
In this case, the attachment portion has an end guide portion formed so as to be connected to the second engagement portion, and the end guide portion is configured such that the part of the wire portion is the one side surface of the shaft portion. When the mounting wire member is rotated so as to be displaced radially outward from the second end portion, the second end portion can be guided in a direction away from the first end portion.
In this case, the second engaging portion and the end guide portion are separated from the second engaging portion from the engaging end portion that engages the second end portion so as not to approach the first end portion. The second end is formed as an elongated hole extending from the engagement end serving as the second engagement portion along the edge of the elongated hole when the mounting wire member is rotated. It can comprise so that it may guide in the direction away from one edge part.
In this way, when the operator applies a force to the mounting wire member, the part of the wire portion can be deformed so as to be more easily separated from the shaft portion of the mounting projection.

In this case,
The attachment portion has a first extension portion and a second extension portion that extend in opposite directions from the first engagement portion and the second engagement portion, respectively, at the one side portion of the attachment hole. ,
The first end portion and the second end portion are formed by bending both ends of the mounting wire member, and the bent portions are engaged with the first engaging portion and the second engaging portion for the mounting. Is set so as to sandwich the part from the front surface and the back surface,
The first extension portion and the second extension portion are respectively in a state where the first end portion and the second end portion are engaged with the first engagement portion and the second engagement portion, respectively. The first engagement portion and the second engagement portion are deformed so as to approach the attachment portion side, and the first end portion and the second end portion are held between the attachment portion and the first engagement portion. A space may be formed, and a space holding the second end may form the elongated hole.
By providing the first extension part and the second extension part as described above and deforming them, a space for holding the first end part and the second end part of the mounting wire member is created. Therefore, compared with the case where such a space is provided as a hole in the fastening belt in advance, the first and second end portions can be easily engaged with the first engaging portion and the second engaging portion. Can be done.

The present invention also provides
A female fitting member;
There is provided a pipe joint comprising a male pipe joint member inserted into and connected to the cylindrical wall of the female pipe joint member.

  Hereinafter, a female pipe joint member and a pipe joint including the same according to the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a plan view showing a state in which a female pipe joint member and a male pipe joint member of a pipe joint according to the present invention are not connected. FIG. 2 is a sectional view taken along line II of FIG. FIG. 3 is a plan view showing a state where the female pipe joint member and the male pipe joint member of FIG. 1 are connected. 4 is a cross-sectional view taken along line IV-IV in FIG. FIG. 5 is a perspective view showing a cylindrical wall of the female pipe joint member of FIG. FIG. 6 is a view for showing the relationship between a mounting projection at the bottom of the cylindrical wall of the female pipe joint member of FIG. 1, a fastening belt attached to the mounting projection, and a mounting wire member for mounting the fastening belt. It is an enlarged view. FIG. 7 is a view showing the fastening belt attached to the attachment projection at the bottom of the cylindrical wall of the female pipe joint member. FIG. 8 is a view showing a state in which the attachment wire member is not attached to the fastening belt.

  As shown in FIGS. 1 to 5, a pipe joint 10 according to the present invention includes a male pipe joint member 12, a cylindrical wall 14 that receives the male pipe joint member 12, and a cylindrical wall 14 ( And a female pipe joint member 18 composed of a metal fastening belt 16 attached to the attachment protrusion 14d of the bottom portion 14a and extending in the circumferential direction of the cylindrical wall 14. As clearly shown in FIG. 5, the cylindrical wall 14 has elongated openings 20 on the left and right sides, and the fastening belt 16 extends from the mounting protrusion 14 d to the top 14 b of the cylindrical wall 14 along the opening 20. The fastening belt 16 of the fastening belt 16 is extended by turning a rotational fastening member 22 that is rotatably attached to a protrusion 14c provided on the top portion 14b from the position of FIG. 1 to the position of FIG. Both end portions 16 a are engaged with the arms 22 a of the rotary fastening member 22, are pulled toward each other and fastened around the cylindrical wall 14, and a part thereof is inserted into the cylindrical wall 14 through the opening 20. The male pipe coupling member 12 is connected and fixed to the female pipe coupling member 18 by engaging with the engaging portion 12 a of the male pipe coupling member 12.

  The fastening belt 16 has a mounting portion 16b positioned on the bottom portion 14a of the cylindrical wall 14 and a pair of fastening portions 16c extending from both sides thereof to the top portion 14b of the cylindrical wall 14 (see FIG. 6). The mounting portion 16b is provided with a mounting hole 16d through which the mounting projection 14d provided on the bottom portion 14a of the cylindrical wall 14 is passed. By passing the mounting projection 14d through the mounting hole 16d, the mounting portion 16b is mounted. The attachment wire member 26 attached to the portion 16b is engaged with the attachment protrusion 14d so that the fastening belt 16 does not come off from the attachment protrusion 14d. In the illustrated example, a holding portion 14 h that extends in the transverse direction outside the opening 20 and holds the fastening portion 16 c of the fastening belt 16 from the outside is provided at the center position of the elongated opening 20 of the cylindrical wall 14. Yes.

  The mounting wire member 26 has its first end portion 26a and second end portion 26b bent, and its bent portions 26g and 26h are provided at one side of the mounting portion 16b of the fastening belt 16 with a space therebetween. The first engaging portion 16e and the second engaging portion 16f are engaged with each other. The mounting wire member 26 extends from the first end portion 26a so as to be in contact with the surface of the mounting portion 16b, passes through the outside of the mounting hole 16d, crosses the mounting portion 16b, and turns back to the back surface of the mounting portion 16b. A wire portion 26e extending so as to contact and reaching the second end portion 26b is provided. A loop portion 26c of one turn is formed at the folded portion, and one end of the wire portion 26e extending from the loop portion 26c to the second end portion 26b. The portion 26f is configured to cross the mounting hole 16d. As shown in FIG. 8, between the first end portion 26a and the second end portion 26b (more precisely, the bent portion 26g and the bent portion 26h) of the mounting wire member 26 not attached to the fastening belt 16. The interval is smaller than the interval between the first engagement portion 16e and the second engagement portion 16f, and the first end portion 26a and the second end portion 26b are widened between the first engagement portion 16e and the second engagement portion 16f. It is engaged with the second engaging portion 16f.

  The mounting protrusion 14d has a short cylindrical shaft portion 14e and a head portion 14g having a pair of locking portions 14f extending outward from the shaft portion 14e. When the fastening hole 16d of the mounting portion 16b is fitted into the mounting projection 14d while the fastening portion 16c of the fastening belt 16 is disposed in the circumferential direction of the cylindrical wall 14, the mounting projection 14d The shaft portion 14e engages with a part 26f of the wire portion 26e and is displaced outwardly in the radial direction of the shaft portion 14e (rightward as viewed in FIG. 6), whereby the mounting wire member 26 is elastically deformed, and the deformation 6 acts on the first engagement portion 16e of the fastening belt 16 via the first end portion 26a of the mounting wire member 26 to the right as viewed in FIG. 6, and the edge 16g of the mounting hole 16d As shown in FIG. 6, the belt 14 is pressed from the right side to the side surface of the head 14g, whereby the mounting protrusion 14d is clamped by the edge 16g of the mounting hole 16d and the part 26f of the wire portion 26e, and the fastening belt 16 is mounted. Do not come off the protrusion 14d To have.

  The mounting wire member 26 thus formed is deformed by the operator applying an external force to the right as shown by F in FIG. 7 to the loop portion 26c, so that a part 26f of the wire portion 26e becomes a portion of the shaft portion 14e. The fastening belt 16 is displaced by being displaced radially outward from the side surface and displaced from a position overlapping with the head 14g (specifically, the locking portion 14f of the head 14g) as viewed in the axial direction. The holding in the axial direction with respect to the mounting projection 14d can be released. At this time, the mounting wire member 26 is deformed by the action of causing the first engaging portion 16e to rotate around the first engaging portion 16e by the external force F. However, as shown in FIG. An inclined end guide portion 16h is provided from the portion 16f, and when the mounting wire member 26 receives the external force, the second end portion 26b is guided in a direction away from the first end portion 26a. Yes.

  In the illustrated example, the mounting portion 16b extends in the opposite direction from one side of the mounting portion 16b, and forms a long and narrow space between the edge 16i of the mounting portion 16b and the second extending portion. 16k, a first engaging portion 16e and a second engaging portion 16f are formed at the base portions of the first extending portion 16j and the second extending portion 16k, respectively, and the edge of the second extending portion 16k is an end. The part guide part 16h is configured. Preferably, in manufacturing, as shown in FIG. 6, the first extending portion 16 j and the second extending portion 16 k are initially at a large angle as indicated by a one-dot chain line, and the first end portion of the mounting wire member 26 is formed. 26a and the second end portion 26b are engaged with the first engagement portion 16e and the second engagement portion 16f, respectively, and the attachment portions are centered on the first engagement portion 16e and the second engagement portion 16f, respectively. It deform | transforms so that it may approach the edges 16i and 16i of 16b, and the space which hold | maintains the 1st end part 26a and the 2nd end part 26b between the edges 16i and 16i of the part 16b for attachment is formed.

  As mentioned above, although embodiment of the pipe joint which concerns on this invention, and its female type pipe joint member was described, this invention is not limited to this. For example, the end guide portion 16h facilitates deformation of the mounting wire member 26 when an external force is applied to the mounting wire member 26, but it is not always necessary to provide this. For example, the attachment wire member 26 can be easily deformed by the loop portion 26c, and the second engagement portions 16e and 16f are simply holes provided in the attachment portion 16b, and the second end portion 26b is fitted into the hole. When an external force F as shown in FIG. 7 is applied, the first end portion 26a and the second end portion 26b rotate at the first engaging portion 16e and the second engaging portion 16f, respectively, The wire member 26 engaged with the shaft portion 14e may be separated from the shaft portion.

Pipe fitting 10; Male pipe fitting member 12; Engaging portion 12a; Cylindrical wall 14; Bottom portion 14a; Top portion 14b; Protrusion 14c; Mounting projection 14d; Shaft portion 14e; Belt 16; Both ends 16a; Mounting portion 16b; Fastening portion 16c; Mounting hole 16d; First engagement portion 16e; Second engagement portion 16f; Edge 16g; End guide portion 16h; 16i; first extending portion 16j; second extending portion 16k; female pipe joint member 18; opening 20; rotary fastening member 22; arm 22a; mounting wire member 26; first end portion 26a; Portion 26b; loop portion 26c; wire portion 26e; part 26f; bent portions 26g and 26h

Claims (10)

A cylindrical wall for receiving the male fitting member;
Removably attached to the outer peripheral surface of the cylindrical wall, extends in the circumferential direction of the cylindrical wall, and partially extends through an opening provided to penetrate the cylindrical wall in the radial direction. A metal clamp for fastening the male pipe fitting member to the cylindrical wall by being clamped around the cylindrical wall in a state of engaging with the male pipe fitting member received in the cylindrical wall. Wearing belt,
A female pipe fitting member comprising:
The cylindrical wall includes a mounting protrusion having a shaft portion protruding radially on the outer peripheral surface thereof and a head portion at the tip of the shaft portion;
A mounting portion having a mounting hole for allowing the mounting protrusion to pass from the back surface facing the outer peripheral surface of the cylindrical wall to the surface opposite to the back surface, and the mounting portion. A pair of tightening parts set to extend from both sides of the cylindrical body and extend in the circumferential direction of the cylindrical body,
The first end portion and the second end portion engage with the first engaging portion and the second engaging portion, respectively, provided at a certain interval on one side portion of the attaching portion. As a result, a mounting wire member fixed to the mounting portion is attached, and the mounting wire member extends from the first end so as to be in contact with the mounting portion, and is outside the mounting hole. Crossing the mounting portion through, and folding back to reach the second end portion, and a portion that is folded back to the second end portion is configured to cross the mounting hole. Having a wire part,
In a state where the mounting protrusion is passed through the mounting hole of the fastening belt, the part of the wire portion is engaged with one side surface of the shaft portion and displaced outward in the radial direction of the shaft portion. The mounting wire member is elastically deformed to urge the fastening belt, and the edge of the mounting hole is pressed against the mounting protrusion from the side opposite to the one side surface of the shaft portion, The mounting projection is clamped by the edge of the mounting hole and the part of the wire portion, and the fastening belt is held in the axial direction with respect to the mounting projection,
The mounting wire member is deformed by applying an external force, and the part of the wire portion is displaced radially outward from the one side surface of the shaft portion to be seen from the head as viewed in the axial direction. A female pipe joint member which is configured to be able to release the holding of the fastening belt in the axial direction by being displaced from an overlapping position to a non-overlapping position.   An interval between the first end portion and the second end portion of the wire member for attachment not attached to the fastening belt is between the first engagement portion and the second engagement portion. 2. The female according to claim 1, wherein the first end portion and the second end portion are engaged with the first engagement portion and the second engagement portion with a gap therebetween. Type pipe joint member.   The wire portion extends along the surface from the first end engaged with the first engagement portion, crosses the attachment portion through the outside of the attachment hole, and is folded back to the second portion. The female pipe joint member according to claim 1 or 2, wherein a portion reaching the end portion extends along the back surface of the fastening belt.   The female pipe joint member according to any one of claims 1 to 3, wherein the edge of the mounting hole is pressed against a side surface of the head.   5. The wire part according to claim 1, wherein the wire part extends from the first end part and is turned into a loop shape of at least one turn and then reaches the second end part. 6. Female pipe fittings.   The mounting wire member has the first end engaged with the first engagement portion so that the part of the wire portion is displaced radially outward from the one side surface of the shaft portion. The female pipe joint member according to any one of claims 1 to 5, wherein the female pipe joint member is rotatable about a center.   The mounting portion has an end guide portion formed so as to be connected to the second engaging portion, and the end guide portion is configured such that the part of the wire portion has a radius from the one side surface of the shaft portion. 7. The female according to claim 6, wherein the second end is guided in a direction away from the first end when the mounting wire member is rotated so as to be displaced outward in the direction. Type pipe joint member.   The second engagement portion and the end guide portion are elongated holes extending in a direction away from the second engagement portion from the engagement end portion that engages the second end portion so as not to approach the first end portion. When the mounting wire member is rotated, the first end portion extends from the engagement end portion as the second engagement portion along the edge of the elongated hole when the mounting wire member is rotated. The female pipe joint member according to claim 7, wherein the female pipe joint member is configured to be guided in a direction away from the female pipe joint. The attachment portion has a first extension portion and a second extension portion that extend in opposite directions from the first engagement portion and the second engagement portion, respectively, at the one side portion of the attachment hole. ,
The first end portion and the second end portion are formed by bending both ends of the mounting wire member, and the bent portions are engaged with the first engaging portion and the second engaging portion for the mounting. Is set so as to sandwich the part from the front surface and the back surface,
The first extension portion and the second extension portion are respectively in a state where the first end portion and the second end portion are engaged with the first engagement portion and the second engagement portion, respectively. The first engagement portion and the second engagement portion are deformed so as to approach the attachment portion side, and the first end portion and the second end portion are held between the attachment portion and the first engagement portion. The female pipe joint member according to claim 8, wherein a space is formed and a space holding the second end portion is formed to form the elongated hole. The female pipe joint member according to any one of claims 1 to 9,
A pipe joint comprising: a male pipe joint member inserted into and connected to the cylindrical wall of the female pipe joint member.

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