JP3102808U - Clamping member for fittings - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a clamp member for a pipe joint which can easily fasten short pipe members.
SOLUTION: A clamp body having a plurality of substantially arc-shaped clamp pieces 31, 32, 33, and ends of the respective clamp pieces being pivotally connected to each other at at least one portion, and a pivot of the clamp body. The pipe joint clamp member 30 including a first screw member 60 and a second screw member 70 that are screwed together for fastening the ends 31a and 33a of the clamp pieces that are not connected to each other. A hole 72 with which the ratchet tool 100 can be engaged is formed on an end surface of the 70 opposite to the surface screwed to the first screw member 60.
[Selection diagram] Fig. 1

Description

  The present invention relates to a pipe joint for connecting food pipes, in which the tapered flanges which increase in diameter toward the shaft ends formed on both short pipe members are clamped to fasten the two short pipe members. The present invention relates to a clamp member.

  Conventionally, in food pipes, it is necessary to frequently clean the inside of the pipes and take sanitary measures such as suppressing the propagation of various bacteria. A pipe joint with good workability that can be connected and disconnected has been demanded. As such a pipe joint, there are two short pipe members each having a tapered flange portion that expands in diameter toward the shaft end, and a pipe that clamps both the tapered flange portions and fastens the two short pipe members to each other. The one provided with a joint clamping member is well known.

  The pipe joint clamp member of this pipe joint has a plurality of substantially arc-shaped clamp pieces, and includes a clamp body in which ends of the respective clamp pieces are pivotally connected to each other at at least one portion. A bolt is rotatably attached to one end of the clamp piece that is not pivotally connected to the clamp body, and a wing nut is screwed onto the bolt, and the wing nut is not pivotally connected to the wing nut. The other end of the clamp piece is pressed in the bolt axis direction so that the ends of the non-pivoted clamp pieces are fastened to each other.

  Further, on the inner peripheral surface side of each of the clamp pieces, a groove portion that sandwiches both tapered flange portions formed on the short tube member is formed, and the tapered flange portions of both the short tube members face each other, By tightening the wing nut in a state where the grooves are fitted to the tapered flanges, the ends of the clamp pieces are fastened to each other, and the grooves clamp the tapered flanges to shorten both ends. The pipe members are fastened to each other.

  However, in the fastening structure between the ends of the clamp pieces that are not pivotally connected to the clamp body by the bolt and the wing nut, the wing nuts are manually tightened or loosened to fasten the ends of the clamp pieces. Although the fastening can be released, since the inside of the pipe needs to be frequently cleaned as described above in the case of the food pipe, this manual operation requires considerable labor for cleaning the inside of the pipe depending on the number of fittings and the cleaning frequency.

  In view of such circumstances, the present invention easily connects and disconnects the ends of the non-pivoted clamp pieces of the clamp body so that the food pipes can be more easily connected and disconnected. It is an object of the present invention to provide a pipe joint clamp member capable of releasing the fastening.

  The invention according to claim 1 is to clamp the tapered flange portions of the pipe joints connecting the food pipes, which increase in diameter toward the shaft ends formed on both short pipe members connected to the food pipes. A clamp member for a pipe joint for fastening the two short pipe members to each other, the clamp member for a pipe joint having a plurality of substantially arc-shaped clamp pieces, and each of the clamp pieces except at least one portion. And a first screw member and a second screw member that are screwed together to fasten the ends of the clamp pieces that are not pivotally connected to each other. On the inner peripheral surface side of each of the clamp pieces, a groove portion that sandwiches both tapered flange portions formed on the short pipe member is formed in the circumferential direction, and the first screw member is connected to the clamp that is not pivotally connected. One end The second screw member rotatably mounted on one side and screwing with the first screw member to press the other end of the clamp piece that is not pivotally connected in the axial direction of the first screw member. And a hole in which a ratchet tool can be engaged.

  According to a second aspect of the present invention, in the pipe joint clamp member according to the first aspect, the outer shape of the second screw member has a polygonal shape that can be operated with a wrench.

  According to a third aspect of the present invention, in the clamp member for a pipe joint according to the first or second aspect, the first screw member pivots to one of ends of the clamp piece whose head is not pivotally connected. The second screw member is a nut member having a hole formed on an end surface opposite to a surface to be screwed to the bolt member so that a ratchet tool can be engaged with the second screw member. .

  According to a fourth aspect of the present invention, in the pipe joint clamp member according to the first or second aspect, the first screw member can sandwich both ends of the clamp pieces that are not pivotally connected together. And a nut portion for supporting the holding piece, the holding piece is rotatably attached to an end of the one clamp piece, and the second screw member is attached to the nut portion. It is a bolt member to be screwed, and has a hole formed in the head end surface with which a ratchet tool can be engaged.

  According to the present invention, the ratchet tool can be engaged with the second screw member that is screwed to the first screw member attached to one of the ends of the clamp piece that is not pivotally connected to the clamp body. Since the small holes are formed, the ends of the clamp pieces that are not pivotally connected to the clamp body can be easily fastened and unfastened by tightening or loosening the second screw member with the ratchet tool. Therefore, it is possible to clean the inside of the pipe by easily connecting or disconnecting the pipes for food without requiring labor such as a conventional manual operation.

  According to the second aspect of the present invention, the second screw member can be tightened or loosened not only with the ratchet tool but also with a wrench.

  According to the invention of claim 3, the nut member can be tightened or loosened with the ratchet tool.

  According to the present invention, the bolt member can be tightened or loosened with the ratchet tool.

  The best mode for carrying out the present invention will be described with reference to the drawings.

  First, FIGS. 1 and 2 show a state in which food pipes 40 and 50 are connected to each other by a pipe joint using the pipe joint clamp member 30 according to the first embodiment of the present invention.

  The pipe joint includes two short pipe members 10 and 20 each having tapered flange portions 12 and 22 formed to increase in diameter toward the shaft end, a packing 5 interposed between these short pipe members 10 and 20, With the packing 5 sandwiched between the tapered flange portions 12 and 22, the pipe joint clamping member 30 for clamping the tapered flange portions 12 and 22 together is provided. Food pipes 40 and 50 are connected to the shaft end sides of the short pipe members 10 and 20 opposite to the tapered flange portions 12 and 22 by welding or the like, respectively.

  The pipe joint clamp member 30 has a plurality of (three in this embodiment) substantially arc-shaped clamp pieces 31, 32, 33, and at least one of the clamp pieces 31, 32, 33 except for one portion. And a first screw member 60 and a second screw member which are screwed together to fasten the ends 31a and 33a of the clamp pieces which are not pivotally connected to each other. 70.

  On the inner peripheral surface side of each of the clamp pieces 31, 32, 33, a groove portion 36 that sandwiches both tapered flange portions 12, 22 formed on the short pipe members 10, 20 is formed in the circumferential direction. The groove portion 36 has left and right side surfaces along the tapered shape of the tapered flange portions 12 and 22 of the short pipe members 10 and 20 so that the groove width gradually decreases toward the bottom of the groove. .

  The ends 31a and 33a of the clamp pieces that are not pivotally connected to the clamp body protrude radially outward in parallel with each other. One of the ends 31a of the clamp pieces has the first screw member 60 attached thereto. Is mounted so as to be rotatable in the radial direction with the pivot 31b as a fulcrum. The first screw member 60 is loosely fitted to the other end 33a of the clamp piece, and the first screw member 60 is rotatable. A concave portion 31b that opens outward in the radial direction is formed so as to be as shown in FIG.

  The first screw member 60 is a bolt member, and its head is rotatably attached to one end 31a of the clamp piece that is not pivotally connected.

  On the other hand, the second screw member 70 is screwed to the first screw member 60 to press the other end 33a of the clamp piece that is not pivotally connected in the axial direction of the first screw member 60. It is.

  The second screw member 70 has a shape that is long in the axial direction. (Hexagon in this embodiment). As shown in FIG. 3, a substantially square hole 72 is formed on the end surface of the second screw member 70 opposite to the surface screwed to the first screw member 60, and a commercially available hole 72 is formed in the hole 72. The ratchet tool 100 can be engaged.

  In order to fasten the two short pipe members 10 and 20 connected to the food pipes 40 and 50 using the pipe joint clamp member 30 having such a structure, the packing 5 is connected to both the short pipe members 10 and 20. The groove 36 of the clamp body is fitted into the tapered flange portions 12 and 22 while being sandwiched between the tapered flange portions 12 and 22 of the clamp member 20. The attached first screw member 60 is rotated so as to be loosely fitted in the concave portion 33b formed in the other end 33a of the end of the clamp piece that is not pivotally connected. By screwing the second screw member 70 and tightening the second screw member 70 with the ratchet tool 100, when the ends 31a and 33a of the clamp pieces that are not pivotally connected are fastened to each other. Moni, the groove 36 is both short tube member 10, 20 together to clamp the two tapered flanges 12 and 22 are fastened.

  By forming the hole 72 into which the ratchet tool 100 can be engaged in the second screw member 70 in this manner, the second screw member 70 is tightened or loosened by the ratchet tool 100, so that the clamp body is easily pivotally connected. The ends 31a and 33a of the clamp pieces that have not been connected can be fastened and unfastened. Therefore, it is possible to easily connect and disconnect the food pipes 40 and 50 to clean the inside of the pipes without requiring labor such as a conventional manual operation.

  Further, as in the present embodiment, by using the first screw member 60 as a bolt member and the second screw member 70 as a nut member, the nut member can be tightened or loosened with the ratchet tool 100.

  Furthermore, since the outer shape of the end of the second screw member 70 opposite to the side screwed to the first screw member 60 has a polygonal shape that can be operated with a wrench, this second screw The member 70 can be tightened or loosened not only with the ratchet tool 100 but also with a wrench.

  Next, FIGS. 4 and 5 show a state in which the food pipes 40 and 50 are connected to each other by a pipe joint using the pipe joint clamp member 300 according to the second embodiment of the present invention. The same components as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

  The clamp member 300 for a pipe joint has a clamp body in which two substantially arc-shaped clamp pieces 34 and 35 are pivotally connected at one end to each other via a link member 36, and the clamp body is pivotally connected. A first screw member 80 and a second screw member 90 that are screwed together for fastening the ends 34a and 35a that are not provided.

  On the inner peripheral surface side of each of the clamp pieces 34, 35, similarly to the pipe joint clamp member 30 according to the first embodiment, both tapered flange portions 12, 22 formed on the short pipe members 10, 20 are provided. A groove 36 to be sandwiched is formed in the circumferential direction.

  The ends 34a and 35a of the clamp pieces that are not pivotally connected to the clamp body project radially outward in parallel with each other, and one of the ends 34a of the clamp pieces is provided with the first screw member 80. Is mounted so as to be rotatable in the radial direction with the pivot 34b as a fulcrum.

  The first screw member 80 includes a holding piece 82 that can hold both ends 34a and 35a of the clamp pieces that are not pivoted together, and a nut portion 84 that supports the holding piece 82. It has a substantially U-shape in plan view. Then, the tip end of the holding piece 82 is attached to one end 34a of the end of the clamp piece that is not pivotally connected, and the first screw member 80 is rotated, so that the clamp piece that is not pivotally connected is formed. The other end 35 a of the first screw member 80 is sandwiched between the holding pieces 82 of the first screw member 80.

  On the other hand, the second screw member 90 is a bolt member that is screwed to the first screw member 80 and presses the other end 35 a of the clamp piece that is not pivotally connected in the axial direction of the first screw member 80. It is.

  The outer shape of the head of the second screw member 90 is a polygon (hexagon in this embodiment) that can be operated with a wrench. As shown in FIG. 6, a substantially square hole 92 is formed in the head end surface of the second screw member 90 so that the commercially available ratchet tool 100 can be engaged with the hole 92. Has become.

  In order to fasten the two short pipe members 10 and 20 connected to the food pipes 40 and 50 using the pipe joint clamp member 300 having such a structure, the packing 5 is connected to the two short pipe members 10 and 20. The groove 36 of the clamp body is fitted into the tapered flange portions 12 and 22 while being sandwiched between the tapered flange portions 12 and 22 of the clamp member 20. By rotating the attached first screw member 80 and holding the other end 35a of the clamp piece that is not pivoted by the holding piece 82, the second screw member is attached to the first screw member 80. By screwing the second screw member 90 with the ratchet tool 100, the ends 34a and 35a of the clamp pieces that are not pivotally connected are fastened together. , The groove 36 is both short tube member 10, 20 to clamp the two tapered flanges 12 and 22 are fastened.

  As described above, the first screw member 80 is substantially U-shaped in plan view, and the nut portion 84 is provided at the bottom thereof. The ratchet tool 100 is attached to the head end surface of the second screw member 90 which is a bolt member screwed to the nut portion 84. The bolt member can be tightened or loosened by the ratchet tool 100 by forming the hole 92 in which the bolt can be engaged.

  As described above in the first embodiment and the second embodiment, the first screw members 60 and 80 and the second screw members 70 and 90 according to the present invention can both be bolt members or nut members. In addition, the method of fastening the ends 31a, 33a (or 34a, 35a) of the clamp pieces that are not pivotally connected to the clamp body is not limited to the fastening method shown in each of the embodiments, and for example, according to the first embodiment. It is also possible to employ the first screw member 80 having the nut portion according to the second embodiment and the second screw member 90 as a bolt member for the clamp body.

  Further, the pipe joint clamp member 30 (or 300) of the present invention, which can easily fasten and release the ends 31a, 33a (or 34a, 35a) of the clamp pieces that are not pivotally connected to the clamp body, for example, As shown in FIG. 7, when used for a packingless pipe joint, the food pipes 40 and 50 can be easily separated and cleaned, and the cleaning and replacement of the packing can be omitted. It can be done effectively.

  One of the short pipe members 10 constituting this packingless pipe joint has a cylindrical protruding portion protruding in the axial direction so as to extend the inner diameter of the short pipe member 10 at the end on the taper flange portion 12 side. A rounded portion 14 a having an arc-shaped cross section is formed over the entire outer periphery of the projecting portion 14. The other short tube member 20 has a large-diameter portion 24 at the end on the side of the tapered flange portion 22 to which the projecting portion 14 formed on the one short tube member 10 can be loosely fitted. A tapered portion 24 a whose diameter continuously decreases in the depth direction toward the inner diameter of the short pipe member 20 is formed on the bottom surface of the 24.

  Then, with the projecting portion 14 of the one short tube member 10 loosely fitted to the large-diameter portion 24 of the other short tube member 20, the tapered flange portions 12, 22 are joined by the pipe joint clamp member 30. By clamping, the rounded portion 14a formed on the protruding portion 14 is pressed against the tapered portion 24a formed on the large-diameter portion 24. The pipe members 10 and 20 can be brought into contact with each other without a gap, and the inside of the connected pipes can be made airtight without using packing.

  Even when the pipe joint clamp member 30 (or 300) of the present invention is applied to this packingless pipe joint, the pipe joint clamp member 30 (or 300) is the first embodiment or the second embodiment. The second screw member 70 (or the second screw member 90 with respect to the first screw member 80) can be fastened to the first screw member 60 with the ratchet tool 100. This simplifies the operation of the second screw member 70 (or 90).

  The holes 72, 92 formed in the second screw members 70, 90 according to the present invention and in which the ratchet tool 100 can be engaged need not necessarily be substantially square as shown in the first embodiment and the second embodiment. However, any shape, such as a hexagon, that the ratchet tool 100 can engage with may be used.

  Also, the outer shape of the second screw members 70 and 90 may be, for example, circular instead of polygonal, but is preferably polygonal as shown in the first and second embodiments. For example, even if the ratchet tool 100 is not provided, it is possible to operate with a wrench.

  In addition, various modifications can be made to the pipe joint clamp members 30 and 300 of the present invention without departing from the spirit thereof.

It is a side sectional view showing the state where pipes for food were connected by the pipe joint using the clamp member for pipe joints concerning a 1st embodiment of the present invention. It is II sectional drawing of FIG. It is a figure which shows the nut member of the said clamp member for pipe joints, (a) is side sectional drawing, (b) is a front view. It is a side sectional view showing the state where pipes for food were connected by the pipe joint using the clamp member for pipe joints concerning a second embodiment of the present invention. FIG. 6 is a sectional view taken along line II-II of FIG. 4. It is a figure which shows the bolt member of the said clamp member for pipe joints, (a) is a sectional side view, (b) is a front view. It is a front sectional view showing the form using the clamp member for pipe joints of the present invention for a packingless pipe joint. It is an exploded sectional view of a short pipe member which constitutes the above-mentioned packingless pipe joint.

Explanation of reference numerals

10, 20 Short pipe member 12, 22 Tapered flange portion 30, 300 Clamp member for pipe joint 31, 32, 33, 34, 35 Clamp piece 31a, 33a, 34a, 35a End portion 36 Groove portion 40, 50 Food piping 60 First 1 screw member (bolt member)
70 Second screw member (nut member)
72, 92 hole 80 first screw member 82 holding piece 84 nut portion 90 second screw member (bolt member)
100 ratchet tool

Claims (4)

  In the pipe joint connecting the pipes for food, the tapered flanges which increase in diameter toward the shaft ends formed on both the short pipe members connected to the pipe for food are clamped to each other so that both short pipe members are connected to each other. A clamp member for a pipe joint to be fastened, wherein the clamp member for a pipe joint has a plurality of substantially arc-shaped clamp pieces, and ends of the clamp pieces are pivotally connected to each other at a portion except at least one place. And a first screw member and a second screw member that are screwed together to fasten the ends of the clamp pieces that are not pivotally connected to the clamp body, and the inner peripheral surface of each of the clamp pieces. On the side, a groove for sandwiching both tapered flanges formed on the short pipe member is formed in the circumferential direction, and the first screw member is turned around one of the ends of the clamp pieces that are not pivotally connected. Movably mounted A ratchet tool is engaged with the second screw member which is screwed into the first screw member and presses the other end of the clamp piece that is not pivotally connected in the axial direction of the first screw member. A clamp member for a pipe joint, wherein a possible hole is formed.   The clamp member for a pipe joint according to claim 1, wherein an outer shape of the second screw member has a polygonal shape operable by a wrench.   The first screw member is a bolt member whose head is rotatably attached to one end of the clamp piece that is not pivotally connected, and the second screw member is screwed to the bolt member. The clamp member for a pipe joint according to claim 1 or 2, wherein the nut member has a hole formed on an end surface opposite to the surface to which a ratchet tool can be engaged.   The first screw member includes a holding piece that can hold both ends of the clamp piece that is not pivoted together, and a nut portion that supports the holding piece. The second screw member is a bolt member screwed to the nut portion, and has a hole formed on the head end surface thereof so that a ratchet tool can be engaged therewith. The clamp member for a pipe joint according to claim 1 or 2, wherein the clamp member is provided.

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