JP4790980B2 - Packing with cover - Google Patents

Description

  The present invention relates to a packing with a cover interposed in a joint portion of a transfer pipe for transferring gas or fluid.

In buildings such as factories and buildings, a packing is interposed in a joint portion of a transfer pipe that transports gas and fluid, and gas leakage and liquid leakage from the joint portion are prevented. Strong acids, halogens, organic solvents, and the like may be transferred through the transfer pipe, and the packing is required to have corrosion resistance, chemical resistance, etc. depending on the type of gas or fluid flowing in the pipe.
Therefore, conventionally, the packing body has been covered with a fluororesin cover having corrosion resistance, chemical resistance, or the like, and is configured as follows.

  As shown in FIG. 18, the cover 31 has an annular shape that is substantially the same shape as the packing body 10 and is formed thin. The cover 31 is sliced up and down in the thickness direction so as to leave only the inner peripheral portion, and the other side cover 31a that covers the front and back side surfaces of the packing body 10 and the other side cover that covers the other side surfaces The portion 31b is connected and integrated on the inner peripheral side, and the radially outer portion is free to open.

However, when such a fluororesin-covered packing 3 with a cover is inserted into the joint portion of the transfer pipe 50, the following problems occur.
In the piping work, when the gap between the flanges 51a and 51a of the pair of long tubular bodies 51 and 51 is large, a short tubular body 52 that substantially matches the gap is inserted, and the flange 51a of the long tubular body 51 and The flanges 51a and 52a are fastened to each other with bolts in the gap between the short tubular body 52 and the flange 52a by inserting the packing 2 with a cover. The gap between the flange 51a of the long tubular body 51 and the flange 52a of the short tubular body 52 is set in advance to the thickness of the packing in consideration of the sealing property, and the packing 2 with cover is flanged in the gap. When inserting from the outside in the radial direction, the outer portion of the cover 31 that covers the packing body 10 that is in a freely open state on the starting end side in the insertion direction is rolled up, making it difficult to insert the cover-equipped packing 3 in many cases. . Further, if the cover-attached packing 3 is mounted between the flanges 51a and 52a, which are joint portions of the transfer pipe 50, with the cover 31 in between, the possibility of gas leakage or liquid leakage from the joint portion is high. , No longer play the role of packing.

  On the other hand, if the outer peripheral portion of the one-side cover portion of the fluororesin cover and the outer peripheral portion of the other-side cover portion are joined, the above-mentioned problem does not occur. Inert and very low adhesion. Although there is a method in which the outer peripheral portion of this fluororesin cover is subjected to a special chemical treatment and surface treated, and then the outer peripheral portions are bonded together, this method is costly and disadvantageous in terms of cost. It is.

  In addition, as a packing that prevents such defects, there is a packing in which the packing body itself is made of fluororesin, but since fluororesin is expensive, it is disadvantageous in terms of cost, and the body is made of fluororesin. Since the packing does not have elasticity compared to the packing made of a rubber-based body, there is a problem that the packing is inferior.

Therefore, in view of the above problems, the cover-equipped packing disclosed in Patent Document 1 is configured as follows.
As shown in FIGS. 19 and 20, the cover-equipped packing 2 is configured such that the outer peripheral portions of the one-side cover portion 21 a and the other-side cover portion 21 b of the cover 21 protrude outward from the outer peripheral portion of the packing body 10. The outer peripheral portion of the one-side cover portion 21a and the outer peripheral portion of the other-side cover portion 21b are joined to each other by sewing.

  According to this structure, since the outer peripheral part of the one side cover part 21a of the cover and the outer peripheral part of the other side cover part 21b are firmly joined via the yarn 22, the flanges 51a, The cover 21 does not bend when mounted between 52a, and can be mounted reliably.

Japanese Patent No. 3304007

  However, the cover-equipped packing 2 disclosed in Patent Document 1 is heated when the outer peripheral portion of the one-side cover portion 21a of the cover and the outer peripheral portion of the other-side cover portion 21b are joined. There is a possibility that the air between the one side cover portion 21a and the other side cover portion 21b of the cover 21 expands and the cover 21 is ruptured. The inner side in the radial direction of the cover 21 is split into two pieces, leaving only the inner peripheral part. When the inner side in the radial direction of the cover 21 is ruptured, the packing body 10 protected by the cover 21 passes through the transfer pipe 50. It will be exposed to the passing gas or liquid, and the corrosion and deterioration of the packing body 10 will easily proceed, causing liquid leakage and gas leakage.

  Therefore, in the present invention, as a first problem, first, the cover is not inserted between the outer peripheral part of the one side cover part and the outer peripheral part of the other side cover part and is inserted between the flanges of the tubular body. It is an object of the present invention to provide a packing with a cover that does not swell up.

  As shown in FIG. 20, the cover-equipped packing 2 disclosed in Patent Document 1 is such that the outer peripheral portions of the one-side cover portion 21 a and the other-side cover portion 21 b of the cover 21 are outside the outer peripheral portion of the packing body 10. A seam allowance T is provided for joining the outer peripheral part of the one-side cover part 21a and the outer peripheral part of the other-side cover part 21b. The areas of the cover portions 21a and 21b covering the front and back surfaces are large.

  Fluororesin, which is the material of this cover, is expensive. Therefore, as a second problem, the area of the cover that covers the front and back surfaces of the packing body is made as small as possible to reduce the cost, and between the flanges of the pipe body. It is an object of the present invention to provide a packing having a configuration in which a cover does not roll up when it is inserted into a cover.

The problems to be solved by the present invention are as described above. Next, means for solving the problems will be described.
First, as described in claim 1,
A packing body having an opening in the center;
A cover made of a non-adhesive material having a shape in which an opening is provided in the center and one side cover that covers one side of the packing body and the other side cover that covers the other side of the packing are connected and integrated on the inner peripheral side. When,
With
In the packing with a cover in which the packing body is inserted between the one side cover part and the other side cover part of the cover,
While projecting the outer peripheral part of the one side cover part and the other side cover part outward from the outer peripheral part of the packing body,
An engagement means formed in an uneven shape that meshes with the outer peripheral portion of the one side cover portion and the outer peripheral portion of the other side cover portion, respectively,
The engagement means provided on the outer peripheral portion of the one-side cover portion has a convex portion configured in a substantially trapezoidal shape with a widened tip, and a concave portion configured in a substantially trapezoidal shape with a narrowed tip.
The engaging means provided on the outer peripheral portion of the other side cover portion has a convex portion configured in a substantially trapezoidal shape with a widened tip, and a concave portion configured in a substantially trapezoidal shape with a narrowed tip.
The convex part of the engaging means provided on the outer peripheral part of the one-side cover part is fitted into the concave part of the engaging means provided on the outer peripheral part of the other-side cover part so that the inner side of the other-side cover part is directed outward. The tip of the convex part of the one side cover part is arranged on the side of the other side cover part so as to penetrate the concave part of the other side cover part and to the side of the other side cover part. The convex part of the engaging means provided on the outer peripheral part of the part is fitted into the concave part of the engaging means provided on the outer peripheral part of the one-side cover part, and the one side from the inner side to the outer side of the one-side cover part The outer periphery of the one-side cover portion is arranged by penetrating the concave portion of the cover portion toward the one-side cover portion side and disposing the tip of the convex portion of the other-side cover portion on the one-side cover portion side. The one side cover part via the engaging means provided on the outer part and the engaging means provided on the outer peripheral part of the other side cover part Engaging the said other side cover section.

Moreover, as described in claim 2,
On the outer periphery of the cover, along the roots of the convex portions of the engaging means provided on the outer peripheral portion of the one-side cover portion and the convex portions of the engaging means provided on the outer peripheral portion of the other-side cover portion, A linear member is attached.

Further, as described in claim 3,
The engaging means is provided over the entire outer periphery of the cover.

Further, as described in claim 4,
The engaging means is provided on a part of the outer periphery of the cover.

Since the present invention is configured as described above, the following effects can be obtained.
First, in the first aspect of the invention, the cover-equipped packing is formed by engaging the engaging means on the outer peripheral portion of the one-side cover portion with the engaging means on the outer peripheral portion of the other-side cover portion. The cover does not squeeze when it is mounted between the two flanges, can be mounted reliably and easily, and workability is improved.
In addition, after this packing with a cover is mounted between the flanges of the tube body, the cover does not rise up and the engagement between the engagement means of the one-side cover part and the engagement means of the other-side cover part is engaged. There is no problem even if it comes off.
In addition, the packing with a cover is detachable from the packing body, the cover attached to the packing body can be easily removed, the cover can be easily replaced, and the maintainability is improved. .
In addition, the concave and convex shape of the outer peripheral part of the one side cover part and the concave and convex shape of the outer peripheral part of the other side cover part are meshed with each other, so that the cover is rolled when the packing with cover is attached between the flanges of the tubular body. It is possible to perform mounting reliably and easily, and workability is improved.

  In the invention according to claim 2, the outer periphery of the cover is linearly formed along the roots of the convex portions of the engaging means of the one-side cover portion and the convex portions of the engaging means of the other-side cover portion. By attaching the member, it is possible to prevent disengagement between the engaging means of the one-side cover part and the engaging means of the other-side cover part, and the packing with cover is attached between the flanges of the tubular body. At this time, the cover does not bend and can be attached reliably and easily, and the workability is improved.

  In the invention according to claim 3, the engagement means is provided over the entire circumference of the outer periphery of the cover, so that the packing with the cover can be selected without checking the direction of the packing with the cover. Even if it is inserted between the flanges of the pipe body in such a direction, the cover does not bend and can be attached reliably and easily, so that workability is improved.

In the invention according to claim 4, the cover is provided by inserting the packing with the cover between the flanges of the tubular body with a part of the outer periphery of the cover provided with the engagement means facing the tubular body. As a result, it is possible to prevent the roll-up, and the mounting can be surely and easily performed, thereby improving workability.
In this configuration, since the engaging means is provided only on a part of the outer periphery of the cover, the work required to provide the engaging means is reduced.

Next, an embodiment of the present invention will be described with reference to the drawings.
The packing with a cover according to the present invention includes a packing body having an opening in the center, an opening in the center, and a one-side cover that covers one side of the packing body and another side that covers the other side And a cover made of a non-adhesive material (for example, made of fluororesin) that is connected and integrated on the inner peripheral side, and the packing body is between the one side cover part and the other side cover part of the cover The flange which is the joint portion of the transfer pipe through which the packing with the cover transfers gas and fluid in this state is secured to the outer peripheral portion of the one-side cover portion and the outer peripheral portion of the other-side cover portion. It is configured to be inserted between them.
Hereinafter, several embodiments of the packing with a cover according to the present invention will be described.

First, the first embodiment of the packing with cover 1A will be described.
As shown in FIGS. 1 and 2, the cover 11 of the cover-equipped packing 1A has an outer peripheral portion of the one-side cover portion 11a and the other-side cover portion 11b, and the one-side cover portion 11a and the other-side cover portion 11b. It is configured to protrude outward from the outer peripheral portion of the packing body 10 that fits in the storage portion between the outer cover portion and the outer peripheral portion of the one side cover portion 11a and the outer peripheral portion of the other side cover portion 11b. Coupling means 11c and 11d are provided so that the one-side cover portion 11a and the other-side cover portion 11b are engaged via the engaging means 11c and 11d.

  As shown in FIGS. 2 and 3, the engaging means 11c of the one-side cover portion 11a and the engaging means 11d of the other-side cover portion 11b are formed in an uneven shape that meshes with each other, and the one-side cover The convex portion of the engaging means 11c of the portion 11a is configured in a substantially trapezoidal shape (or a substantially fan shape) with a widened tip, and the concave portion is configured in a substantially trapezoidal shape with a narrowed tip, and the engaging means of the other side cover portion 11b. The convex portion 11d is also formed in a substantially trapezoidal shape with a substantially similar tip. The convex part of the engaging means 11c of the one-side cover part 11a is fitted into the concave part of the engaging means 11d of the other-side cover part 11b and is brought down to the other-side cover part 11b side, and the other-side cover part 11b is engaged. By fitting the convex part of the means 11d into the concave part of the engaging means 11c of the one-side cover part 11a and tilting it toward the one-side cover part 11a side, the engaging means 11c and 11d are engaged with each other, and the convex part whose tip is widened The part becomes difficult to come out from the recessed part with a narrowed tip, and the cover 11 does not squeeze when the cover-equipped packing 1A is mounted between the flanges of the tubular body, and can be reliably and easily mounted. Workability is improved.

  In addition to the shape shown in FIG. 3, the concave and convex shapes of the engaging means 11c and 11d may be formed as circular or elliptical convex portions and concave portions as shown in FIG. 4A, or as shown in FIG. The shape may be a rectangular concave portion and a convex portion, or may be a trapezoidal convex portion and a concave shape as shown in (c), and the shape is not particularly limited as long as the shapes mesh with each other.

  Further, in the case of the rectangular-wave-like engaging means 11c ″ · 11d ″ shown in FIG. 4B, as shown in FIGS. 5 and 6, the convex portion of the engaging means 11c ″ of the one-side cover portion 11a ″ is formed. The other side cover portion 11b "is fitted into the concave portion of the engaging means 11d" and tilted to the other side cover portion 11b "side, and the convex portion of the engaging means 11d" of the other side cover portion 11b " The engagement means 11c "is fitted into the concave portion and tilted toward the one side cover portion 11a", and an annular line is formed on the outer periphery of the cover along the roots of the convex portions of the alternately tilted engagement means 11c "and 11d". A shaped member 9 may be attached.

  The linear member 9 is formed of a synthetic resin elastic member such as Teflon (registered trademark) in a rubber band shape, and is fitted along the roots of the convex portions of the engaging means 11c "and 11d" which are alternately tilted. It is configured as follows.

  The linear member may be formed in a string shape with an elastic member made of synthetic resin such as Teflon (registered trademark), and along the root of the convex portion of the engaging means 11c "and 11d" which are alternately tilted. It may be arranged so that the starting end and the terminal end of the linear member are bundled.

  In this way, along the root of the convex portion of the engaging means 11c "of the one side cover portion 11a" and the convex portion of the engaging means 11d "of the other side cover portion 11b" that are alternately tilted, a linear shape is formed on the outer periphery of the cover. By attaching the member 9, it is possible to prevent disengagement between the engaging means 11c "of the one-side cover portion 11a" and the engaging means 11d "of the other-side cover portion 11b". When the 1A is mounted between the flanges of the tubular body, the cover 11 does not squeeze and can be mounted reliably and easily, and the workability is improved.

  This linear member 9 is formed by engaging means 11c and 11d of the cover portions 11a and 11b having the shape shown in FIG. 3 and cover portions 11a ′ and 11b having the shape shown in FIG. The engagement means 11c 'and 11d' of the shape of FIG. 4 (c) or the base of the convex portion of the engagement means 11c "'and 11d"' of the cover portion 11a "'and 11b"' shown in FIG. Can be attached.

Next, 2nd Embodiment of packing 1B with a cover is described.
As shown in FIGS. 7 and 8, the cover 12 of the cover-equipped packing 1B also has an outer peripheral portion of the one-side cover portion 12a and the other-side cover portion 12b, and the one-side cover portion 12a and the other-side cover portion 12b. Are arranged so as to protrude outward from the outer peripheral portion of the packing body 10 that fits in the storage portion between the outer cover portion and the outer peripheral portion of the one-side cover portion 12a and the outer peripheral portion of the other-side cover portion 12b. A means is provided.

  The engaging means of the one-side cover portion 12a and the engaging means of the other-side cover portion 12b are formed by an insertion convex portion 12c and an insertion convex portion 12e having an insertion hole portion 12d. A plurality of insertion convex portions 12c are provided on the outer peripheral portion of one of the one side cover portion 12a and the other side cover portion 12b, and the insertion convex portion 12e having the insertion hole portion 12d is the one side cover portion 12a or the other side. A plurality of cover portions 12b are provided on the other outer peripheral portion.

  The insertion convex portion and the insertion convex portion having the insertion hole portion are alternately provided with the insertion convex portion and the insertion convex portion on the outer peripheral portion of the one side cover portion 12a, and the other side cover portion 12b. It is good also as a structure which provides an insertion convex part and an insertion convex part in the outer peripheral part in the position corresponding to the insertion convex part and this insertion convex part of this one side cover part 12a, respectively.

  With such a configuration, the insertion convex portion 12c of the one side cover portion 12a is tilted toward the other side cover portion 11b, and the insertion convex portion 12e of the other side cover portion 12b is tilted toward the one side cover portion 12a, By inserting the insertion convex portion 12c into the insertion hole portion 12d and engaging the outer peripheral portions of the one side cover portion 12a and the other side cover portion 12b, the cover-equipped packing 1B is placed between the flanges of the tubular body. The cover 12 does not squeeze when it is attached to the cover, can be reliably and easily attached, and workability is improved.

  As shown in FIG. 9, the insertion convex portion 12c is inserted into the insertion hole portion 12d, as shown in FIG. 9, the insertion convex portion 12c of the one side cover portion 12a is tilted toward the other side cover portion 11b and the other side cover portion 12b. The insertion convex portion 12e may be left without being tilted, and the insertion convex portion 12c may be inserted into the insertion hole portion 12d.

  Further, the shape of the cover 1B having the insertion convex portion 12c and the insertion hole portion 12d is not limited to the shape shown in FIG. 7, but may be a shape as shown in FIG. In this configuration, the outer peripheral portion of the other side cover portion 12b ′ is located between the one side cover portion 12a and the other side cover portion 12b ′ without forming the insertion convex portion on the outer peripheral portion of the other side cover portion 12b ′. The insertion hole portion 12d ′ is formed in the outer peripheral edge portion of the other side cover portion 12b ′ in a configuration that bulges outward from the outer peripheral portion of the packing body 10 that fits in the storage portion.

  And when inserting the insertion convex part 12c into the to-be-inserted hole part 12d ', as shown in FIG. 9, the insertion convex part 12c which protrudes from the outer peripheral part of the one side cover part 12a is brought down to the other side cover part 11b side. Then, the insertion convex portion 12c is inserted into the insertion hole portion 12d ′.

  In addition, you may comprise the outer end side of the said insertion convex part 12a wider than the hole width of the said to-be-inserted hole part 12d (or 12d '). By configuring the outer end side 12a of the insertion convex portion wider than the hole width of the insertion hole portion 12d (or 12d ′), the insertion convex portion 12a is inserted into the insertion hole portion 12d (or 12d ′). After that, the engagement between the insertion convex portion 12a and the insertion hole portion 12d (or 12d ′) is prevented from being disengaged, and the cover 12 is attached when the packing with cover 1B is mounted between the flanges of the tubular body. No drooling can occur, and mounting can be performed reliably and easily, improving workability.

Next, 3rd Embodiment of packing 1C with a cover is described.
As shown in FIGS. 11 and 12, the cover 13 of the packing with cover 1 </ b> C also has an outer peripheral portion of the one-side cover portion 13 a and the other-side cover portion 13 b, and the one-side cover portion 13 a and the other-side cover portion 13 b. It is configured to protrude outward from the outer peripheral portion of the packing body 10 that fits in the storage portion between, and the outer peripheral portion of the one side cover portion 13a is directed to one side in the circumferential direction with respect to the radial direction. An oblique cut 13c is formed, and an outer circumferential portion of the other side cover portion 13b is formed with an oblique cut 13d toward the other side in the circumferential direction.

  The notch 13c of the one-side cover portion 13a and the notch 13d of the other-side cover portion 13b serve as engagement means, and the notches 13c and 13d are engaged with each other to be engaged with each other, whereby the cover-equipped packing 13 is connected to the tube body. The cover 13 does not squeeze when it is mounted between the flanges, can be mounted reliably and easily, and workability is improved.

  In the packings 1A, 1B, and 1C with covers from the first embodiment to the third embodiment described above, after the packings 1A (or 1B and 1C) with covers are mounted between the flanges of the tubular body, the cover 11 ( Alternatively, the engagement of the one-side cover portion 11a (or 12a, 13a) and the engagement means of the other-side cover portion 11b (or 12b, 13b) is disengaged without the boil-up of 12, 13). There is no problem. Further, the cover-equipped packing 1A (or 1B, 1C) is such that the cover 11 (or 12, 13) is detachable from the packing body 10, and the cover 11 (or 12, 13) attached to the packing body 10 is simple. The cover 11 (or 12, 13) can be easily replaced, and the maintainability is improved.

Next, 4th Embodiment of packing 1D with a cover is described.
As shown in FIGS. 13 and 14, the cover 14 of the cover-equipped packing 1 </ b> D also includes the one side cover portion 14 a and the other side cover portion 14 b with the outer side cover portion 14 a and the other side cover portion 14 b. The outer peripheral part of the one-side cover part 14a and the outer peripheral part of the other-side cover part 14b are formed by the locking means 8 so as to protrude outward from the outer peripheral part of the packing main body 10 that fits in the storage part between them. It is configured to be locked.

As shown in FIG. 15, the locking means 8 is a longitudinal member having a substantially “U” shape in cross section, and is formed of an elastic member made of synthetic resin such as Teflon (registered trademark). However, in order to make it difficult for the locking means 8 to come off from the outer periphery of the cover portions 14a and 14b, a convex portion is provided on the inner side of the tip of the "U" portion, or a bulge is formed at the outer peripheral ends of the cover portions 14a and 14b. You can also.
The locking means 8 is disposed so as to surround the outer peripheral portions of the cover portions 14a and 14b, and the "U" -shaped opening 8a of the locking means 8 is connected to the outer peripheral portion of the one-side cover portion 14a and the other side. By fitting and locking the outer peripheral portion of the cover portion 14b, the cover 14 is prevented from being twisted when the cover-equipped packing 1D is mounted between the flanges of the tubular body, and the mounting is reliably and easily performed. This improves workability.

In addition, after attaching this packing 1D with a cover between the flanges of a pipe body, the cover 14 does not rise up, but the outer peripheral part of the one side cover part 14a and the outer peripheral part of the other side cover part 14b are locked. The locking means 9 may be removed, and the locking means 9 can be reused when the other cover-equipped packing 1D is mounted, thereby reducing the cost.
Moreover, this cover-equipped packing 1D removes the latching means 9 which latches the outer peripheral part of the one side cover part 14a and the outer peripheral part of the other side cover part 14b, and the cover 14 is detachable with respect to the packing main body 10. Only the cover attached to the packing body 10 can be easily removed, the cover 14 can be easily replaced, and the maintainability is improved.

Next, a fifth embodiment of the packing with cover 1E will be described.
As shown in FIGS. 16 and 17, the cover 15 of the cover-equipped packing 1 </ b> D is configured such that the depth of the storage portion into which the packing main body 10 is inserted between the one side cover portion 15 a and the other side cover portion 15 b is the packing main body. 10 is configured to have substantially the same length as the width between the inner periphery and the outer periphery of the packing body 10, and on the outer side of the outer peripheral portion of the packing body 10, the outer peripheral portion of the one-side cover portion 15 a and the other-side cover portion 15 b The outer periphery of the thread is stitched with a thread 7.

  The fluororesin which is the material of the cover 15 is expensive. With such a configuration, the depth of the storage portion into which the packing body 10 is inserted between the one side cover portion 15a and the other side cover portion 15b is defined as the packing body 10. By making the length substantially the same as the width between the inner periphery and the outer periphery, the outer peripheral portions of the one-side cover portion 15a and the other-side cover portion 15b are formed between the one-side cover portion 15a and the other-side cover portion 15b. The outer ends of the one-side cover portion 15a and the other-side cover portion 15b are substantially aligned with the outer ends of the packing body 10 without protruding from the outer peripheral portion of the packing body 10 inserted between them. The area of the cover portions 15a and 15b covering the front and back surfaces can be reduced, and the cost can be reduced.

  Even if the outer ends of the one side cover portion 15a and the other side cover portion 15b and the outer end of the packing body 10 are substantially aligned, the outer peripheral portion of the one side cover portion 15a and the other side The cover 15b can be sewn together with the outer periphery of the cover 15b turned, and when the cover-equipped packing 1E is attached between the flanges of the tube body, the cover 15 is prevented from rolling up and can be attached securely and easily. Can be performed, and workability is improved.

As mentioned above, although 5 embodiment was described about packing 1A * 1B * 1C * 1D * 1E with a cover, the structure of packing with a cover is not limited to these embodiment.
Moreover, in each said embodiment, the said engaging means, the said latching means, or the said seam stitch is provided over the perimeter of the outer periphery of the cover 11 (or 12, 13, 14, 15). In this configuration, the packing with cover 1A (or 1B, 1C, 1D, 1E) is directed in any direction without checking the direction of the packing with cover 1A (or 1B, 1C, 1D, 1E). Even if it is inserted between the flanges of the tube body, the cover 11 (or 12, 13, 14, 15) does not squeeze and can be attached reliably and easily, improving workability. To do.

  The engagement means, the locking means, or the seam stitching may be performed by, for example, the cover 11 (or 12, 13, 14) such as the insertion side of the cover-equipped packing 1A (or 1B, 1C, 1D, 1E). 15) may be provided on a part of the outer periphery.

  In the case of this configuration, the cover 11 with the cover 11 (or 12, 13, 14, 15) provided with the engagement means, the lock means, or the seam stitch is directed toward the tube, and the cover-attached packing is provided. 1A (or 1B, 1C, 1D, 1E), inserted between the flanges of the tube body, the cover 11 (or 12, 13, 14, 15) is prevented from rolling up and is securely and easily installed. This improves the workability.

  Further, in this configuration, the engaging means, the locking means, or the seam stitch is provided only on a part of the outer periphery of the cover 11 (or 12, 13, 14, 15). Alternatively, the work required to provide the locking means or the seam stitch is reduced.

  In the above embodiment, the packing body 10 and the cover 11 (or 12, 13, 14, 15) covering it are formed in an annular shape, but the packing body 10 and the cover 11 (or 12, 13, 14, 15) may be a rectangular shape having an opening at the center, and is not particularly limited as long as the shape has an opening at the center.

A top view of packing 1A with a cover concerning a 1st embodiment. AA sectional drawing in FIG. The enlarged view of the engaging means 11c * 11d of the cover parts 11a * 11b. (A) is an enlarged view of the engaging means of cover part 11a '* 11b'. (B) is an enlarged view of the engaging means of the cover portions 11a "and 11b". (C) is an enlarged view of the engaging means of the cover portions 11a "'and 11b"'. The top view of packing 1A with a cover of the state which attached the linear member 9 around the cover parts 11a * 11b. BB sectional drawing in FIG. The top view of packing 1B with a cover which concerns on 2nd Embodiment. CC sectional drawing in FIG. CC sectional drawing in FIG. The top view of packing 1B with a cover which concerns on another Example of 2nd Embodiment. A top view of packing 1C with a cover concerning a 3rd embodiment. The enlarged view of the engaging means of cover part 13a * 13b. The top view of packing 1D with a cover which concerns on 4th Embodiment. DD sectional drawing in FIG. The perspective view of the latching means 8. FIG. The top view of packing 1E with a cover concerning 5th Embodiment. EE sectional drawing in FIG. The figure explaining mounting | wearing to the joint part of the transfer pipe 50 of the conventional packing 3 with a cover. The top view of the packing 2 with a cover which concerns on patent document 1. FIG. FF sectional drawing in FIG.

1A Packing with cover 1B Packing with cover 1C Packing with cover 1D Packing with cover 1E Packing with cover 7 Thread 8 Locking means 9 Wire member 10 Packing body 11 Cover 11a One side cover part 11b Other side cover part 11c Engaging means 11d Engaging means 12 Cover 12a One side cover part 12b Other side cover part 12c Insertion convex part 12d Insertion hole part 13 Cover 13a One side cover part 13b Other side cover part 13c Cut 13d Cut 14 Cover 14a One side cover part 14b Other Side cover 15 Cover 15a One side cover 15b Other side cover

Claims (4)

A packing body having an opening in the center;
A cover made of a non-adhesive material having a shape in which an opening is provided in the center and one side cover that covers one side of the packing body and the other side cover that covers the other side of the packing are connected and integrated on the inner peripheral side. When,
With
In the packing with a cover in which the packing body is inserted between the one side cover part and the other side cover part of the cover,
While projecting the outer peripheral part of the one side cover part and the other side cover part outward from the outer peripheral part of the packing body,
An engagement means formed in an uneven shape that meshes with the outer peripheral portion of the one side cover portion and the outer peripheral portion of the other side cover portion, respectively,
The engagement means provided on the outer peripheral portion of the one-side cover portion has a convex portion configured in a substantially trapezoidal shape with a widened tip, and a concave portion configured in a substantially trapezoidal shape with a narrowed tip.
The engaging means provided on the outer peripheral portion of the other side cover portion has a convex portion configured in a substantially trapezoidal shape with a widened tip, and a concave portion configured in a substantially trapezoidal shape with a narrowed tip.
The convex part of the engaging means provided on the outer peripheral part of the one-side cover part is fitted into the concave part of the engaging means provided on the outer peripheral part of the other-side cover part so that the inner side of the other-side cover part is directed outward. The tip of the convex part of the one side cover part is arranged on the side of the other side cover part so as to penetrate the concave part of the other side cover part and to the side of the other side cover part. The convex part of the engaging means provided on the outer peripheral part of the part is fitted into the concave part of the engaging means provided on the outer peripheral part of the one-side cover part, and the one side from the inner side to the outer side of the one-side cover part The outer periphery of the one-side cover portion is arranged by penetrating the concave portion of the cover portion toward the one-side cover portion side and disposing the tip of the convex portion of the other-side cover portion on the one-side cover portion side. The one side cover part via the engaging means provided on the outer part and the engaging means provided on the outer peripheral part of the other side cover part Covered packing, characterized in that engaging the said other side cover section.   On the outer periphery of the cover, along the roots of the convex portions of the engaging means provided on the outer peripheral portion of the one-side cover portion and the convex portions of the engaging means provided on the outer peripheral portion of the other-side cover portion, The packing with a cover according to claim 1, wherein a linear member is attached.   The packing with a cover according to claim 1 or 2, wherein the engaging means is provided over the entire outer periphery of the cover.   The packing with a cover according to any one of claims 1 to 3, wherein the engaging means is provided on a part of the outer periphery of the cover.

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