JP3189950U - Packing latch and flexible tube using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packing locking tool capable of locking a packing used for connection to a flexible tube in a stable state and with one touch, and a flexible tube using the same. SOLUTION: A packing locking tool 3 is a packing locking tool 3 for locking a packing 2 used for connecting an end portion 11 of a flexible pipe 1 to another piping material in an airtight state to the flexible 1 pipe. An elastic locking portion (packing locking portion) configured to be fitted into a part of the flexible tube 1 by elastically deforming and to be locked to a part of the flexible tube 1 by an elastic restoring force. It is provided with a packing holding portion (connecting portion) that is continuously formed in the elastic locking portion and is configured to hold at least one packing. [Selection diagram] Fig. 1

Description

  The present invention relates to a structure for attaching a packing used for connecting a flexible pipe to the flexible pipe.

  When connecting a flexible tube with a cap nut at the end to other piping materials, the cap nut is closed with a packing in order to ensure airtightness at the connecting portion. ing. The flexible pipe is sold with the packing attached thereto by a vinyl tie or a rubber band so that it is not necessary to search for the packing at the time of the connection work.

  However, locking with a vinyl tie or rubber band in this way is due to the manual work of the operator, so there are individual differences in the locking state, the locking is bad, too strong or too weak, There was a problem of variation. For this reason, the packing may fall off during storage or transportation, which causes management problems.

  On the other hand, for example, Patent Document 1 has been proposed as a structure for attaching an accessory to a product. According to the prior art, using an accessory holder equipped with a ring-shaped plate-like portion to be fitted and attached to the outer periphery of a screw container that is a product, and with a through hole for inserting and locking the accessory, The ring-shaped plate-like portion of the accessory holder is fitted into the screw portion of the screw container, and the accessory is attached by being inserted into the through hole.

  Therefore, it is possible to perform a locking operation that is stable with one touch (no variation by the operator) and is easy to remove. Further, in the locked state, the accessory is not easily detached from the container.

JP 2004-331099 A

  In the prior art of Patent Document 1, since an accessory holder formed by punching a synthetic resin plate is hooked on a container and locked, it is fitted into a flexible pipe having cap nuts at both ends and being thick. It cannot be adopted for the form used in Specifically, when the inner diameter of the annular plate-shaped portion is smaller than the outer diameter of the cap nut, it cannot be fitted, and when larger than the outer diameter of the cap nut, it is easy to fit. However, there is a problem of dropping out carelessly.

  An object of the present invention is to provide a packing locking tool capable of locking and attaching a packing to a thick flexible pipe having cap nuts attached to both ends, a flexible pipe using the packing locking tool, and a packing locking method Is to provide.

  The packing locking tool of the present invention is a packing locking tool for locking the packing used for connecting the end portion of the flexible pipe with another piping material in an airtight state to the flexible pipe, and is elastically deformed. An elastic locking portion configured to be fitted into a part of the flexible tube and to be locked to a part of the flexible tube by exhibiting an elastic restoring force, and the elastic locking portion. And a packing holding portion configured to hold at least one packing.

  According to said structure, when locking a packing to a flexible pipe and attaching it, a packing locking tool provided with an elastic locking part and a packing holding | maintenance part is used. The elastic locking portion is configured to be fitted into a part of the flexible tube by being elastically deformed, and to be locked to a part of the flexible tube by exerting an elastic restoring force. The packing holding part is formed continuously with the elastic locking part and is configured to hold at least one packing.

  Therefore, there is little variation by the operator, it can be easily locked and removed, and it is difficult to drop off, and can be used by being fitted into a thick flexible pipe with cap nuts attached to both ends. .

  Moreover, in the packing locking tool of the present invention, the pair of curved pieces and the connecting piece for connecting the base end portions of the pair of curved pieces are formed in a substantially C shape or a substantially U shape, The pair of curved pieces constitutes the elastic locking portion, and the opposing surfaces are fitted into the valley portion of the flexible tube from the outer periphery and locked, and the connecting piece constitutes the packing holding portion, and has an annular shape. The packing is held by being inserted into the packing.

  According to said structure, packing can be latched because a packing latching tool fits into the trough part of a flexible tube from outer periphery.

  Furthermore, the packing locking tool of the present invention is formed in a substantially U shape or a substantially J shape by a pair of gripping pieces and a connecting piece for connecting the base end portions of the pair of gripping pieces. The pair of gripping pieces constitute the elastic locking portion, each having a locking claw projecting inwardly at the tip thereof, and both sides of the inner and outer periphery of the cap nut attached to the end of the flexible tube Each holding piece is inserted, and the engaging claw is engaged with the concave or convex portion of the flexible tube or the rear end of the cap nut, and the connecting piece constitutes the packing holding portion and is inserted into the annular packing. The packing is held on the front end side of the cap nut.

  According to said structure, packing can be latched because a packing latching tool fits from the inside and outside both sides of a cap nut.

  Further, the packing locking tool of the present invention is formed in a substantially U shape by a pair of insertion pieces and a connecting piece for connecting the base end portions of the pair of insertion pieces. The front end portion has a locking claw protruding outward, and the base end portion has a packing presser protruding outward on the opposite side of the connecting piece, respectively, and the elastic locking portion and packing holding The packing is housed in a cap nut provided at an end of the flexible tube, and the pair of insertion pieces are inserted into the annular packing from the tip thereof, The packing is sandwiched between the packing presser and the end surface of the flexible tube by being fitted and locked to the crest portion of the flexible tube from the inner peripheral side.

  According to said structure, in the state which accommodated packing in the cap nut provided in the edge part of a flexible pipe, it can be locked with a packing latching tool, compared with the case where it is hung on the outer periphery of a flexible pipe. The possibility of dropout and breakage can be reduced.

  Furthermore, the packing locking tool of the present invention is formed in a substantially U shape by a pair of locking pieces and a connecting piece that connects between the base end portions of the pair of locking pieces, and the pair of locking pieces. The stopper piece has a packing presser protruding outward on the tip end side, and a locking claw protruding outward on the side opposite to the connecting piece on the base end part. A stopper and a packing holding part are configured, and the packing is accommodated in a cap nut provided at an end of the flexible tube, and the pair of locking pieces are inserted through the annular packing from the base end Thus, the packing claw is sandwiched between the packing presser and the end surface of the flexible tube by the locking claw being fitted and locked to the crest portion of the flexible tube from the inner peripheral side.

  According to said structure, in the state which accommodated packing in the cap nut provided in the edge part of a flexible pipe, it can be locked with a packing latching tool, compared with the case where it is hung on the outer periphery of a flexible pipe. The possibility of dropout and breakage can be reduced.

  Further, in the packing locking tool of the present invention, the packing presser is formed to protrude outward from a position retracted by a predetermined distance from the distal end portion of the locking piece, so that a stepped portion is formed between the distal end portion. And locking the tool to the stepped portions of the pair of locking pieces and moving them close to each other, thereby bending the locking pieces and making it possible to remove the packing holding portion and the packing. And

  According to the above configuration, the packing locking tool is formed in a substantially U shape, and is inserted into the flexible tube from the connecting piece side for locking. Therefore, the distal ends of the pair of locking pieces are bent and the packing presser is If it is only formed, it is difficult to grasp it and pull out the packing locking tool. Therefore, the packing presser is formed so as to protrude from a position that is lowered by one step from the tip end portion of the locking piece to form a stepped portion.

  Therefore, by locking the tool to the stepped portion and causing the tools to be displaced close to each other, the locking piece can be bent and the packing locking tool and the packing can be easily removed.

  Furthermore, the packing locking tool of the present invention includes a pair of locking pieces parallel to each other, and a substantially V-shaped connecting piece that connects between the base end portions of the pair of locking pieces. Each of the locking pieces has a packing presser projecting outward on the distal end side thereof, and a locking claw projecting outward on the opposite side of the connecting piece at the base end portion. Constituting a packing holding portion, the connecting piece constituting the elastic locking portion, the packing being accommodated in a cap nut provided at an end of the flexible tube, and the connecting piece and the pair of locking pieces, In the state where the inside of the annular packing is inserted from the base end portion, the locking claw is fitted into the mountain portion of the flexible tube from the inner peripheral side and locked, so that the packing presser and the end surface of the flexible tube are It is characterized by sandwiching the packing between them.

  According to said structure, in the state which accommodated packing in the cap nut provided in the edge part of a flexible pipe, it can be locked with a packing latching tool, compared with the case where it is hung on the outer periphery of a flexible pipe. The possibility of dropout and breakage can be reduced. In addition, in this packing locking tool, the substantially V-shaped connecting piece is easily elastically deformed, and it is easy to carry out ancillary work by a shipping worker and a detaching work by a field worker while reliably preventing the packing from dropping off. Will be able to do.

  The flexible tube of the present invention is characterized in that at least one packing is locked by the packing locking tool.

  According to said structure, packing can be attached to the flexible pipe | tube with which a cap nut is attached to both ends and is thick by using the above-mentioned packing latching tool.

  Furthermore, the packing locking method of the present invention is a packing locking method in which a packing used when connecting a flexible pipe having a cap nut at an end thereof to another piping material is locked to the flexible pipe. The ring-shaped packing is inserted into the packing locking tool using a substantially C-shaped or U-shaped packing locking tool, and the packing locking tool through which the packing is inserted is elastically deformed. The packing locking tool in a state in which the packing is inserted in a state in which the packing is inserted into a part of the flexible pipe from outside, and a part of the flexible pipe is sandwiched by an elastic restoring force. It is characterized by making it.

  Further, in the packing locking method of the present invention, as the packing locking tool, a pair of curved pieces and a connecting piece for connecting between the base end portions of the pair of curved pieces, the substantially C-shape, or A packing locking tool made of an elastic member formed in a substantially U shape is used, and the opposing surfaces of the pair of curved pieces are fitted into the valley portions of the flexible tube from the outer periphery and locked. .

  Furthermore, the packing locking method of the present invention is a packing locking method in which a packing used when connecting a flexible pipe having a cap nut at an end thereof to another piping material is locked to the flexible pipe. The pair of insertion pieces and a connecting piece for connecting the base end portions of the pair of insertion pieces are formed in a substantially U shape, and the pair of insertion pieces protrudes outward at the distal end portions thereof. A packing locking tool having a pawl and having a packing presser projecting outwardly on the opposite side to the connecting piece at the base end portion is used, and the annular packing is attached to a pair of the packing locking tools. The insertion piece is inserted past the locking claw, the pair of insertion pieces through which the packing is inserted is elastically deformed, and the packing locking tool is fitted from the end of the flexible tube to be elastically restored. By force The locking claw Te is in a state engaged fits from the inner peripheral side to the mountain portion of the flexible tube, characterized in that for clamping the gasket between the end surface of the flexible tube and the packing gland.

  Further, the packing locking method of the present invention is a packing locking method in which a packing used for connecting a flexible pipe having a cap nut attached to an end thereof to another piping material is locked to the flexible pipe. The pair of locking pieces and a connecting piece for connecting the base ends of the pair of locking pieces are formed in a substantially U-shape, and the pair of locking pieces protrude outward at the distal ends thereof. Each of the packing retainers and a base end portion having a locking claw projecting outwardly on the opposite side of the connecting piece, and the annular packing is used as the packing locking tool. The connecting piece and the pair of locking pieces are inserted through the locking claw, the connecting piece through which the packing is inserted and the pair of locking pieces are elastically deformed, and the packing locking tool is moved to the flexible Fit from the end of the tube and with elastic restoring force In a state in which the locking claw is engaged fits from the inner peripheral side to the mountain portion of the flexible tube, characterized in that for clamping the gasket between the end surface of the flexible tube and the packing gland.

  Furthermore, the packing locking method of the present invention is a packing locking method in which a packing used when connecting a flexible pipe having a cap nut at an end thereof to another piping material is locked to the flexible pipe. A pair of locking pieces parallel to each other and a substantially V-shaped connecting piece for connecting between the base end portions of the pair of locking pieces, the pair of locking pieces at the tip thereof Packing retainers each having an outwardly projecting packing presser and having a locking claw projecting outwardly on the opposite side of the connecting piece at the base end portion, and the annular packing, The connecting piece and the pair of locking pieces of the packing locking tool are inserted through the locking claws, the connecting piece through which the packing is inserted is elastically deformed, and the packing locking tool is attached to the flexible tube. Fit from the end, the locking by elastic restoring force There in a state engaged fits from the inner peripheral side to the mountain portion of the flexible tube, characterized in that for clamping the gasket between the end surface of the flexible tube and the packing gland.

  The packing locking tool of the present invention, the flexible tube using the same, and the packing locking method are fitted into a part of the flexible tube by elastic deformation as described above, and a part of the flexible tube by an elastic restoring force. Since the packing locking tool configured to hold at least one packing is used, there is little variation by the operator, and the locking and removal can be easily performed, and the dropout In addition, it can be used by being fitted into a flexible tube having cap nuts at both ends and being thick.

It is a perspective view explaining the use condition of the packing latching tool which concerns on the 1st Embodiment of this invention. It is a front view of the packing latching tool which concerns on the 1st Embodiment of this invention. It is a front view of the packing latching tool which concerns on the 2nd Embodiment of this invention. It is a front view of the packing latching tool which concerns on the 3rd Embodiment of this invention. It is a perspective view explaining the use condition of the packing latching tool which concerns on the 3rd Embodiment of this invention. It is sectional drawing explaining the use condition of the packing latching tool which concerns on the 4th Embodiment of this invention. It is sectional drawing explaining the use condition of the packing latching tool which concerns on the 5th Embodiment of this invention. It is a 6th page figure of the packing latching tool concerning a 6th embodiment of the present invention.

(Embodiment 1)
FIG. 1 is a perspective view illustrating a usage state of the packing locking tool 3 according to the first embodiment of the present invention. The packing locking tool 3 of the present embodiment locks one or a plurality of packings 2 used to connect the end portion 11 of the flexible tube 1 to other piping materials in an airtight state. Used to attach. A cap nut 12 is inserted and attached to both end portions 11 of the flexible tube 1. The cap nut 12 is used when connecting to another piping material (not shown). In order to obtain airtightness at the time of connection, the cap nut 12 is provided between the end portion 11 and the end portion of the other piping material. The cap nut 12 is tightened with the packing 2 interposed therebetween.

  In the example of FIG. 1, an example is shown in which two packings 2 are locked to one end 11 of the flexible tube 1. As described above, the two packings 2 for both end portions may be locked by the packing locking tool 3 only on one of the end portions 11. Depending on the part, one packing 2 may be locked to each end, or the spare packing 2 may be locked. As the packing 2, for example, rubber, non-asbestos, or resin can be used.

  FIG. 2 is a front view of the packing locking tool 3. The packing locking tool 3 is formed in a substantially U shape by a pair of curved pieces 31, 31 and a connecting piece 32 that connects the base end portions of the pair of curved pieces 31, 31. In the example of FIGS. 1 and 2, the packing locking tool 3 is formed in the substantially U shape, but may be formed in a substantially C shape depending on the shape of the connecting piece 32. The packing locking tool 3 is formed of a resin molded product such as PP resin or PE resin so as to be elastically deformable.

  And a pair of said curved pieces 31 and 31 comprise an elastic latching | locking part, and when it is elastically deformed, it is engage | inserted by the part of the trough which is a part of the flexible tube 1, and it opposes by exhibiting an elastic restoring force. The connecting piece 32 constitutes the packing holding portion and is inserted into the annular packing 2 to hold the packing. Therefore, the maximum inner dimension of the pair of curved pieces 31, 31 is set to a dimension equal to or smaller than the outer diameter of the valley portion of the flexible tube 1. The inner dimensions of the tip portions of the pair of curved pieces 31, 31 are set to be smaller than the outer diameter of the valley portion of the flexible tube 1, and are set so as not to fall off carelessly. The leading ends of the bending pieces 31, 31 may be formed with a rounding 33 for introduction so as to easily expand when pressed from the side of the flexible tube 1.

  Using the packing locking tool 3 formed in this way, the operator inserts the annular packing 2 from one curved piece 31 into the connecting piece 32 and hooks the curved pieces 31, 31. By pressing the distal end (roundness 33) against the side surface of the flexible tube 1, the pair of curved pieces 31, 31 are guided by the distal end (roundness 33) and elastically deformed, and from the outside to the valley portion of the flexible tube 1 It is inserted. By releasing the deformation in a state where the valley portion of the flexible tube 1 is sandwiched between the pair of curved pieces 31, 31, it can be locked by an elastic restoring force.

  In this way, by using the packing locking tool 3, the packing 2 can be attached to the flexible pipe 1 having the cap nuts 12 attached to both ends 11 and being thick, and the variation by the operator is small and easy. Can be locked. Further, whether or not the packing locking tool 3 and the packing 2 are locked to the flexible tube 1, that is, whether or not there is an incidental leak at the time of shipping packing work or at the installation work site of the flexible tube 1, Although it is difficult to check with a vinyl tie etc., when the packing locking tool 3 of this embodiment is used, it can be easily seen from the outside how many are attached. Leakage can also be prevented.

  The packing 2 is removed when the operator grips the part of the connecting piece 32 and pulls it away from the flexible tube 1, and the pair of curved pieces 31, 31 sandwiching the flexible tube 1 are elastically deformed and the tip ( The roundness 33) expands and separates from the side surface of the flexible tube 1. Thereafter, the packing 2 can be pulled out from the packing locking tool 3 and fitted into the cap nut 12, so that the end 11 of the flexible tube 1 can be connected to another piping material in an airtight state. In this way, the packing 2 can be easily removed, and the packing stopper 3 can be detached from the flexible tube 1 unless a force for elastically deforming the pair of curved pieces 31 and 31 sandwiching the flexible tube 1 is applied. Therefore, the packing locking tool 3 does not easily fall off the flexible tube 1 during storage or transportation.

Furthermore, since this packing locking tool 3 is not disposable like conventional vinyl ties and rubber bands, it can be reused as resource waste, which is also excellent from the viewpoint of environmental problems.
(Embodiment 2)
FIG. 3 is a front view of a packing locking tool 3A according to the second embodiment of the present invention. The packing locking tool 3A of the present embodiment is also fitted from the outside into the valley portion of the flexible tube 1 in the same manner as the packing locking tool 3 described above. The packing locking tool 3A includes a pair of curved pieces 31A and 31A and a connecting piece 32A that connects the base end portions of the curved pieces 31A and 31A. In the packing locking tool 3 described above, the connecting piece 32 is formed in a substantially U shape from the base end portion of the bending pieces 31, 31, but in the packing locking tool 3, the bending pieces 31 A, 31 A The portion of the connecting piece 32A from the base end is formed in a substantially U shape.

  And the front end side of the U-shape is formed in the narrow width portion 34 </ b> A, and the curved portion that holds the outer peripheral surface of the flexible tube 1 is continuous. With this configuration, the packing 2 can be prevented from coming off at the U-shaped portion, and when the packing locking tool 3A holding (inserting) the packing 2 is fitted into the flexible tube 1, the packing is used. 2 does not shift to the curved portion, and workability can be improved.

Furthermore, a thin ear-shaped convex portion 33A is formed outside the curved portion 31A. 33 A of said convex parts are chuck | zipper parts for making it easy to hold | grip with the said automatic attachment machine, when using the automatic attachment machine comprised so that the said packing latching tool 3A may be automatically attached to the flexible tube 1. is there. The convex portion 33 also has a function as a handle for facilitating pinching when removing the packing locking tool 3A from the flexible tube 1 by manual work.
(Embodiment 3)
FIG. 4 is a plan view of a packing locking tool 3B according to a third embodiment of the present invention, and FIG. 5 is a perspective view for explaining a use state. The packing locking tool 3B according to the present embodiment is substantially U-shaped or substantially composed of a pair of gripping pieces 31B and 35B and a connecting piece 32B connecting the base end portions of the pair of gripping pieces 31B and 35B. It is formed in a J-shape (substantially J-shape in the examples of FIGS. 4 and 5). The pair of gripping pieces 31B and 35B constitutes an elastic locking portion, and has locking claws 36B and 37B protruding inward at the tip portions thereof. The connecting piece 32B constitutes a packing holding part.

Using the packing locking tool 3B configured in this way, the operator can insert the packing 2 into the connecting piece 32B from one of the pair of gripping pieces 31B and 35B. The gripping pieces 35B and 31B are inserted from both inner and outer peripheral sides of the cap nut 12 attached to the end portion 11, respectively. Thus, for example, the locking claw 37B of the inner gripping piece 35B is locked to the inner peripheral side of the crest portion of the flexible tube, and the locking claw 36B of the outer gripping piece 31B is engaged with the rear end portion of the cap nut 12. Stop. Thus, the packing locking tool 3 </ b> B is fitted in the axial direction of the flexible tube 1, and the packing 2 can be locked by being sandwiched from both the inside and outside of the cap nut 12.
(Embodiment 4)
FIG. 6 is a cross-sectional view illustrating a usage state of the packing locking tool 5 according to the fourth embodiment of the present invention. FIG. 6 shows a state in which the packing 2 is locked to the portion of the cap nut 12 by the packing locking tool 5 in a cross section in the axial direction of the flexible tube 1. The packing locking tool 5 is formed in a substantially U shape by a pair of insertion pieces 51 and 51 and a connecting piece 52 that connects the base end portions of the pair of insertion pieces 51 and 51. The pair of insertion pieces 51 and 51 have locking claws 53 and 53 protruding outward at their distal ends, respectively, and protruded outward on the side opposite to the connecting piece 52 at the base end. It has packing pressers 54 and 54, respectively. The pair of insertion pieces 51 and 51 constitute an elastic locking portion and a packing holding portion, and the packing 2 is accommodated in the cap nut 12 provided at the end portion 11 of the flexible tube 1 as described above.

  When the packing 2 is locked using the packing locking tool 5 configured as described above, the operator attaches the annular packing 2 to the pair of insertion pieces 51, 51 of the packing locking tool 5. After passing through the pawls 53, 53, it is pushed in from the end 11 of the flexible tube 1. As a result, the pair of insertion pieces 51 and 51 are elastically deformed, and the locking claws 53 and 53 get over the valley portion of the flexible tube 1 from the end portion 11 of the flexible tube 1. When the packing lock 5 is inserted until the packing pressers 54 and 54 come into contact with the packing 2, the locking claws 53 and 53 are fitted into the crests of the flexible tube 1 from the inner peripheral side by elastic restoring force. Lock with. In this way, the packing 2 can be sandwiched between the packing retainers 54 and 54 and the end surface of the end portion 11 of the flexible tube 1 that is folded back.

By using such a packing locking tool 5, the packing 2 can be locked in a state of being accommodated in the cap nut 12, and the flexible tube 1 like the packing locking tools 3, 3 </ b> A, 3 </ b> B described above. Compared with the case where it is hung on the outer periphery, the possibility of dropout and breakage can be reduced. By shifting the cap nut 12 in the tube axis direction of the flexible tube 1, the exact number of packings 2 attached to the cap nut 12 can be confirmed.
(Embodiment 5)
FIG. 7: is sectional drawing explaining the use condition of the packing latching tool 6 which concerns on the 5th Embodiment of this invention. This packing locking tool 6 is similar to the packing locking tool 5 shown in FIG. The packing locking tool 6 is formed in a substantially U shape by a pair of locking pieces 61 and 61 and a connecting piece 62 that connects the base end portions of the pair of locking pieces 61 and 61. The pair of locking pieces 61, 61 have packing pressers 64, 64 projecting outward on the distal end side, respectively, and the base end portion on the outer side opposite to the connecting piece 62. It has the latching claws 63 and 63 which protruded, respectively. The pair of locking pieces 61, 61 constitutes an elastic locking portion and a packing holding portion, the connecting piece 62 constitutes an elastic locking portion, and the packing 2 is a cap nut provided at the end 11 of the flexible tube 1. 12 is accommodated.

  When the packing locking device 6 configured as described above is used, when the packing 2 is locked, the operator puts the annular packing 2 on the pair of locking pieces 61 and 61 of the packing locking device 6. After passing through the locking claws 63, 63, it is pushed from the end 11 of the flexible tube 1. Thus, the locking claws 63 and 63 get over the valley portion of the flexible tube 1 from the end portion 11 of the flexible tube 1 while the connecting piece 62 and the pair of locking pieces 61 and 61 are elastically deformed. Then, when the packing locking tool 6 is inserted until the packing pressers 64, 64 come into contact with the packing 2, the locking claws 63, 63 are fitted into the crests of the flexible tube 1 from the inner peripheral side by elastic restoring force. Lock with. Thus, the packing 2 can be sandwiched between the packing pressers 64 and 64 and the end face of the flexible tube 1. Even when such a packing locking tool 6 is used, the packing 2 can be locked in a state of being accommodated in the cap nut 12, and the possibility of dropping off can be reduced.

  Further, in this packing locking tool 6, the packing pressers 64, 64 are formed to protrude outward from a position retracted by a predetermined distance D from the distal end portions of the locking pieces 61, 61, and between the distal end portions. The step portions 65, 65 are configured. This is because the packing locking tool 6 formed in a substantially U shape is inserted into the flexible tube 1 from the side of the connecting piece 62 and locks, so that the distal ends of the pair of locking pieces 61 and 61 are bent. This is because it is difficult to pull out the packing lock 6 by simply forming the packing retainers 64 and 64.

In this way, the packing pressers 64, 64 are formed so as to protrude from the position one step down from the tip of the locking pieces 61, 61, and the step portions 65, 65 are formed. By locking the tool to the parts 65 and 65 and moving them close to each other, the locking pieces 61 and 61 can be bent and the packing locking tool 61 and the packing 2 can be easily removed.
(Embodiment 6)
FIG. 8 is a six-sided view of a packing locking tool 6A according to a sixth embodiment of the present invention. This packing locking tool 6A is similar to the packing locking tool 6 shown in FIG. 6 described above, and corresponding portions are denoted by the same reference numerals, and description thereof is omitted. In the present embodiment, a connecting piece 62A that connects the base end portions of the pair of locking pieces 61, 61 parallel to each other is formed in a substantially V shape. The pair of locking pieces 61, 61 constitute a packing holding part, and the connecting piece 62A constitutes an elastic locking part.

  Using the packing locking tool 6A configured as described above, when the packing 2 is locked, the operator can connect the annular packing 2 to the connecting piece 62A of the packing locking tool 6A and the pair of locking pieces 61, After being inserted through 61, the packing locking tool 6 </ b> A is pushed from the end portion 11 of the flexible tube 1. As a result, the engaging claws 63, 63 get over the valley portion of the flexible tube 1 from the end portion 11 of the flexible tube 1 while the connecting piece 62 </ b> A is elastically deformed. Then, when the packing locking tool 6 is inserted until the packing pressers 64, 64 come into contact with the packing 2, the locking claws 63, 63 are fitted into the crests of the flexible tube 1 from the inner peripheral side by elastic restoring force. Lock with. Thus, the packing 2 can be sandwiched between the packing pressers 64 and 64 and the end face of the flexible tube 1. Even when such a packing locking tool 6A is used, the packing 2 can be locked in a state of being accommodated in the cap nut 12, and the possibility of dropping off can be reduced.

  Moreover, in this packing latching tool 6A, the substantially V-shaped connecting piece 62A is easily elastically deformed, and while preventing the packing 2 from falling off, an incidental work by a shipping operator or a detaching work by a field worker is possible. Can be easily performed.

DESCRIPTION OF SYMBOLS 1 Flexible pipe 11 End part 12 Cap nut 2 Packing 3 Packing locking tool 31 Curved piece 32 Connection piece 3A Packing lock tool 31A Curved piece 32A Connection piece 33A Protruding part 3B Packing lock tool 31B, 35B Holding piece 32B Connection piece 36B 37B Locking claw 5 Packing locking tool 51 Insertion piece 52 Connection piece 53 Locking claw 54 Packing presser 6, 6A Packing locker 61 Locking piece 62, 62A Connection piece 63 Locking claw 64 Packing presser 65 Step part

  The present invention relates to a structure for attaching a packing used for connecting a flexible pipe to the flexible pipe.

When connecting a flexible tube with a cap nut at the end to other piping materials, the cap nut is closed with a packing in order to ensure airtightness at the connecting portion. ing. The flexible pipe is sold in a state where the packing is attached by Vinitai (registered trademark) or rubber band so that it is not necessary to search for the packing at the time of the connection work.

However, locking with the above VINTAI (registered trademark) or rubber band is due to the manual work of the operator, so there are individual differences in the locked state, and the locking is poor, too strong or weak. There was a problem that there was variation. For this reason, the packing may fall off during storage or transportation, which causes management problems.

  On the other hand, for example, Patent Document 1 has been proposed as a structure for attaching an accessory to a product. According to the prior art, using an accessory holder equipped with a ring-shaped plate-like portion to be fitted and attached to the outer periphery of a screw container that is a product, and with a through hole for inserting and locking the accessory, The ring-shaped plate-like portion of the accessory holder is fitted into the screw portion of the screw container, and the accessory is attached by being inserted into the through hole.

  Therefore, it is possible to perform a locking operation that is stable with one touch (no variation by the operator) and is easy to remove. Further, in the locked state, the accessory is not easily detached from the container.

JP 2004-331099 A

  In the prior art of Patent Document 1, since an accessory holder formed by punching a synthetic resin plate is hooked on a container and locked, it is fitted into a flexible pipe having cap nuts at both ends and being thick. It cannot be adopted for the form used in Specifically, when the inner diameter of the annular plate-shaped portion is smaller than the outer diameter of the cap nut, it cannot be fitted, and when larger than the outer diameter of the cap nut, it is easy to fit. However, there is a problem of dropping out carelessly.

SUMMARY OF THE INVENTION An object of the present invention is to provide a packing locking tool capable of locking a packing to a flexible pipe having cap nuts attached to both ends and increasing the thickness, and a flexible pipe using the packing locking tool. .

  The packing locking tool of the present invention is a packing locking tool for locking the packing used for connecting the end portion of the flexible pipe with another piping material in an airtight state to the flexible pipe, and is elastically deformed. An elastic locking portion configured to be fitted into a part of the flexible tube and to be locked to a part of the flexible tube by exhibiting an elastic restoring force, and the elastic locking portion. And a packing holding portion configured to hold at least one packing.

  According to said structure, when locking a packing to a flexible pipe and attaching it, a packing locking tool provided with an elastic locking part and a packing holding | maintenance part is used. The elastic locking portion is configured to be fitted into a part of the flexible tube by being elastically deformed, and to be locked to a part of the flexible tube by exerting an elastic restoring force. The packing holding part is formed continuously with the elastic locking part and is configured to hold at least one packing.

  Therefore, there is little variation by the operator, it can be easily locked and removed, and it is difficult to drop off, and can be used by being fitted into a thick flexible pipe with cap nuts attached to both ends. .

  Moreover, in the packing locking tool of the present invention, the pair of curved pieces and the connecting piece for connecting the base end portions of the pair of curved pieces are formed in a substantially C shape or a substantially U shape, The pair of curved pieces constitutes the elastic locking portion, and the opposing surfaces are fitted into the valley portion of the flexible tube from the outer periphery and locked, and the connecting piece constitutes the packing holding portion, and has an annular shape. The packing is held by being inserted into the packing.

  According to said structure, packing can be latched because a packing latching tool fits into the trough part of a flexible tube from outer periphery.

  Furthermore, the packing locking tool of the present invention is formed in a substantially U shape or a substantially J shape by a pair of gripping pieces and a connecting piece for connecting the base end portions of the pair of gripping pieces. The pair of gripping pieces constitute the elastic locking portion, each having a locking claw projecting inwardly at the tip thereof, and both sides of the inner and outer periphery of the cap nut attached to the end of the flexible tube Each holding piece is inserted, and the engaging claw is engaged with the concave or convex portion of the flexible tube or the rear end of the cap nut, and the connecting piece constitutes the packing holding portion and is inserted into the annular packing. The packing is held on the front end side of the cap nut.

  According to said structure, packing can be latched because a packing latching tool fits from the inside and outside both sides of a cap nut.

  Further, the packing locking tool of the present invention is formed in a substantially U shape by a pair of insertion pieces and a connecting piece for connecting the base end portions of the pair of insertion pieces. The front end portion has a locking claw protruding outward, and the base end portion has a packing presser protruding outward on the opposite side of the connecting piece, respectively, and the elastic locking portion and packing holding The packing is housed in a cap nut provided at an end of the flexible tube, and the pair of insertion pieces are inserted into the annular packing from the tip thereof, The packing is sandwiched between the packing presser and the end surface of the flexible tube by being fitted and locked to the crest portion of the flexible tube from the inner peripheral side.

  According to said structure, in the state which accommodated packing in the cap nut provided in the edge part of a flexible pipe, it can be locked with a packing latching tool, compared with the case where it is hung on the outer periphery of a flexible pipe. The possibility of dropout and breakage can be reduced.

  Furthermore, the packing locking tool of the present invention is formed in a substantially U shape by a pair of locking pieces and a connecting piece that connects between the base end portions of the pair of locking pieces, and the pair of locking pieces. The stopper piece has a packing presser protruding outward on the tip end side, and a locking claw protruding outward on the side opposite to the connecting piece on the base end part. A stopper and a packing holding part are configured, and the packing is accommodated in a cap nut provided at an end of the flexible tube, and the pair of locking pieces are inserted through the annular packing from the base end Thus, the packing claw is sandwiched between the packing presser and the end surface of the flexible tube by the locking claw being fitted and locked to the crest portion of the flexible tube from the inner peripheral side.

  According to said structure, in the state which accommodated packing in the cap nut provided in the edge part of a flexible pipe, it can be locked with a packing latching tool, compared with the case where it is hung on the outer periphery of a flexible pipe. The possibility of dropout and breakage can be reduced.

  Further, in the packing locking tool of the present invention, the packing presser is formed to protrude outward from a position retracted by a predetermined distance from the distal end portion of the locking piece, so that a stepped portion is formed between the distal end portion. And locking the tool to the stepped portions of the pair of locking pieces and moving them close to each other, thereby bending the locking pieces and making it possible to remove the packing holding portion and the packing. And

  According to the above configuration, the packing locking tool is formed in a substantially U shape, and is inserted into the flexible tube from the connecting piece side for locking. Therefore, the distal ends of the pair of locking pieces are bent and the packing presser is If it is only formed, it is difficult to grasp it and pull out the packing locking tool. Therefore, the packing presser is formed so as to protrude from a position that is lowered by one step from the tip end portion of the locking piece to form a stepped portion.

  Therefore, by locking the tool to the stepped portion and causing the tools to be displaced close to each other, the locking piece can be bent and the packing locking tool and the packing can be easily removed.

  Furthermore, the packing locking tool of the present invention includes a pair of locking pieces parallel to each other, and a substantially V-shaped connecting piece that connects between the base end portions of the pair of locking pieces. Each of the locking pieces has a packing presser projecting outward on the distal end side thereof, and a locking claw projecting outward on the opposite side of the connecting piece at the base end portion. Constituting a packing holding portion, the connecting piece constituting the elastic locking portion, the packing being accommodated in a cap nut provided at an end of the flexible tube, and the connecting piece and the pair of locking pieces, In the state where the inside of the annular packing is inserted from the base end portion, the locking claw is fitted into the mountain portion of the flexible tube from the inner peripheral side and locked, so that the packing presser and the end surface of the flexible tube are It is characterized by sandwiching the packing between them.

  According to said structure, in the state which accommodated packing in the cap nut provided in the edge part of a flexible pipe, it can be locked with a packing latching tool, compared with the case where it is hung on the outer periphery of a flexible pipe. The possibility of dropout and breakage can be reduced. In addition, in this packing locking tool, the substantially V-shaped connecting piece is easily elastically deformed, and it is easy to carry out ancillary work by a shipping worker and a detaching work by a field worker while reliably preventing the packing from dropping off. Will be able to do.

  The flexible tube of the present invention is characterized in that at least one packing is locked by the packing locking tool.

According to said structure, packing can be attached to the flexible pipe | tube with which a cap nut is attached to both ends and is thick by using the above-mentioned packing latching tool .

Packing fastener of the present invention, and the flexible tube using the same, as described above, fitted on a part of the flexible tube by elastic deformation, with locked to a portion of the flexible tube by an elastic restoring force Since the packing locking tool configured to hold at least one packing is used, there is little variation by the operator, and it can be easily locked and removed, and is difficult to drop off. It can be used by being fitted into a thick flexible pipe fitted with a cap nut.

It is a perspective view explaining the use condition of the packing latching tool which concerns on the 1st Embodiment of this invention. It is a front view of the packing latching tool which concerns on the 1st Embodiment of this invention. It is a front view of the packing latching tool which concerns on the 2nd Embodiment of this invention. It is a front view of the packing latching tool which concerns on the 3rd Embodiment of this invention. It is a perspective view explaining the use condition of the packing latching tool which concerns on the 3rd Embodiment of this invention. It is sectional drawing explaining the use condition of the packing latching tool which concerns on the 4th Embodiment of this invention. It is sectional drawing explaining the use condition of the packing latching tool which concerns on the 5th Embodiment of this invention. It is a 6th page figure of the packing latching tool concerning a 6th embodiment of the present invention.

(Embodiment 1)
FIG. 1 is a perspective view illustrating a usage state of the packing locking tool 3 according to the first embodiment of the present invention. The packing locking tool 3 of the present embodiment locks one or a plurality of packings 2 used to connect the end portion 11 of the flexible tube 1 to other piping materials in an airtight state. Used to attach. A cap nut 12 is inserted and attached to both end portions 11 of the flexible tube 1. The cap nut 12 is used when connecting to another piping material (not shown). In order to obtain airtightness at the time of connection, the cap nut 12 is provided between the end portion 11 and the end portion of the other piping material. The cap nut 12 is tightened with the packing 2 interposed therebetween.

  In the example of FIG. 1, an example is shown in which two packings 2 are locked to one end 11 of the flexible tube 1. As described above, the two packings 2 for both end portions may be locked by the packing locking tool 3 only on one of the end portions 11. Depending on the part, one packing 2 may be locked to each end, or the spare packing 2 may be locked. As the packing 2, for example, rubber, non-asbestos, or resin can be used.

  FIG. 2 is a front view of the packing locking tool 3. The packing locking tool 3 is formed in a substantially U shape by a pair of curved pieces 31, 31 and a connecting piece 32 that connects the base end portions of the pair of curved pieces 31, 31. In the example of FIGS. 1 and 2, the packing locking tool 3 is formed in the substantially U shape, but may be formed in a substantially C shape depending on the shape of the connecting piece 32. The packing locking tool 3 is formed of a resin molded product such as PP resin or PE resin so as to be elastically deformable.

  And a pair of said curved pieces 31 and 31 comprise an elastic latching | locking part, and when it is elastically deformed, it is engage | inserted by the part of the trough which is a part of the flexible tube 1, and it opposes by exhibiting an elastic restoring force. The connecting piece 32 constitutes the packing holding portion and is inserted into the annular packing 2 to hold the packing. Therefore, the maximum inner dimension of the pair of curved pieces 31, 31 is set to a dimension equal to or smaller than the outer diameter of the valley portion of the flexible tube 1. The inner dimensions of the tip portions of the pair of curved pieces 31, 31 are set to be smaller than the outer diameter of the valley portion of the flexible tube 1, and are set so as not to fall off carelessly. The leading ends of the bending pieces 31, 31 may be formed with a rounding 33 for introduction so as to easily expand when pressed from the side of the flexible tube 1.

  Using the packing locking tool 3 formed in this way, the operator inserts the annular packing 2 from one curved piece 31 into the connecting piece 32 and hooks the curved pieces 31, 31. By pressing the distal end (roundness 33) against the side surface of the flexible tube 1, the pair of curved pieces 31, 31 are guided by the distal end (roundness 33) and elastically deformed, and from the outside to the valley portion of the flexible tube 1 It is inserted. By releasing the deformation in a state where the valley portion of the flexible tube 1 is sandwiched between the pair of curved pieces 31, 31, it can be locked by an elastic restoring force.

In this way, by using the packing locking tool 3, the packing 2 can be attached to the flexible pipe 1 having the cap nuts 12 attached to both ends 11 and being thick, and the variation by the operator is small and easy. Can be locked. Further, whether or not the packing locking tool 3 and the packing 2 are locked to the flexible tube 1, that is, whether or not there is an incidental leak at the time of shipping packing work or at the installation work site of the flexible tube 1, While it is difficult to confirm with the above-mentioned VINTAI (registered trademark) etc., it is necessary to use the packing locking tool 3 of this embodiment because it is easy to visually recognize how many are attached from the outside. The incidental leakage of the packing 2 can also be prevented.

  The packing 2 is removed when the operator grips the part of the connecting piece 32 and pulls it away from the flexible tube 1, and the pair of curved pieces 31, 31 sandwiching the flexible tube 1 are elastically deformed and the tip ( The roundness 33) expands and separates from the side surface of the flexible tube 1. Thereafter, the packing 2 can be pulled out from the packing locking tool 3 and fitted into the cap nut 12, so that the end 11 of the flexible tube 1 can be connected to another piping material in an airtight state. In this way, the packing 2 can be easily removed, and the packing stopper 3 can be detached from the flexible tube 1 unless a force for elastically deforming the pair of curved pieces 31 and 31 sandwiching the flexible tube 1 is applied. Therefore, the packing locking tool 3 does not easily fall off the flexible tube 1 during storage or transportation.

Furthermore, this packing locking tool 3 is not disposable like conventional Vinitai (registered trademark) or rubber band, but can be reused as resource waste, so it is also excellent from the viewpoint of environmental problems. .
(Embodiment 2)
FIG. 3 is a front view of a packing locking tool 3A according to the second embodiment of the present invention. The packing locking tool 3A of the present embodiment is also fitted from the outside into the valley portion of the flexible tube 1 in the same manner as the packing locking tool 3 described above. The packing locking tool 3A includes a pair of curved pieces 31A and 31A and a connecting piece 32A that connects the base end portions of the curved pieces 31A and 31A. In the packing locking tool 3 described above, the connecting piece 32 is formed in a substantially U shape from the base end portion of the bending pieces 31, 31, but in the packing locking tool 3, the bending pieces 31 A, 31 A The portion of the connecting piece 32A from the base end is formed in a substantially U shape.

  And the front end side of the U-shape is formed in the narrow width portion 34 </ b> A, and the curved portion that holds the outer peripheral surface of the flexible tube 1 is continuous. With this configuration, the packing 2 can be prevented from coming off at the U-shaped portion, and when the packing locking tool 3A holding (inserting) the packing 2 is fitted into the flexible tube 1, the packing is used. 2 does not shift to the curved portion, and workability can be improved.

Furthermore, a thin ear-shaped convex portion 33A is formed outside the curved portion 31A. 33 A of said convex parts are chuck | zipper parts for making it easy to hold | grip with the said automatic attachment machine, when using the automatic attachment machine comprised so that the said packing latching tool 3A may be automatically attached to the flexible tube 1. is there. The convex portion 33 also has a function as a handle for facilitating pinching when removing the packing locking tool 3A from the flexible tube 1 by manual work.
(Embodiment 3)
FIG. 4 is a plan view of a packing locking tool 3B according to a third embodiment of the present invention, and FIG. 5 is a perspective view for explaining a use state. The packing locking tool 3B according to the present embodiment is substantially U-shaped or substantially composed of a pair of gripping pieces 31B and 35B and a connecting piece 32B connecting the base end portions of the pair of gripping pieces 31B and 35B. It is formed in a J-shape (substantially J-shape in the examples of FIGS. 4 and 5). The pair of gripping pieces 31B and 35B constitutes an elastic locking portion, and has locking claws 36B and 37B protruding inward at the tip portions thereof. The connecting piece 32B constitutes a packing holding part.

Using the packing locking tool 3B configured in this way, the operator can insert the packing 2 into the connecting piece 32B from one of the pair of gripping pieces 31B and 35B. The gripping pieces 35B and 31B are inserted from both inner and outer peripheral sides of the cap nut 12 attached to the end portion 11, respectively. Thus, for example, the locking claw 37B of the inner gripping piece 35B is locked to the inner peripheral side of the crest portion of the flexible tube, and the locking claw 36B of the outer gripping piece 31B is engaged with the rear end portion of the cap nut 12. Stop. Thus, the packing locking tool 3 </ b> B is fitted in the axial direction of the flexible tube 1, and the packing 2 can be locked by being sandwiched from both the inside and outside of the cap nut 12.
(Embodiment 4)
FIG. 6 is a cross-sectional view illustrating a usage state of the packing locking tool 5 according to the fourth embodiment of the present invention. FIG. 6 shows a state in which the packing 2 is locked to the portion of the cap nut 12 by the packing locking tool 5 in a cross section in the axial direction of the flexible tube 1. The packing locking tool 5 is formed in a substantially U shape by a pair of insertion pieces 51 and 51 and a connecting piece 52 that connects the base end portions of the pair of insertion pieces 51 and 51. The pair of insertion pieces 51 and 51 have locking claws 53 and 53 protruding outward at their distal ends, respectively, and protruded outward on the side opposite to the connecting piece 52 at the base end. It has packing pressers 54 and 54, respectively. The pair of insertion pieces 51 and 51 constitute an elastic locking portion and a packing holding portion, and the packing 2 is accommodated in the cap nut 12 provided at the end portion 11 of the flexible tube 1 as described above.

  When the packing 2 is locked using the packing locking tool 5 configured as described above, the operator attaches the annular packing 2 to the pair of insertion pieces 51, 51 of the packing locking tool 5. After passing through the pawls 53, 53, it is pushed in from the end 11 of the flexible tube 1. As a result, the pair of insertion pieces 51 and 51 are elastically deformed, and the locking claws 53 and 53 get over the valley portion of the flexible tube 1 from the end portion 11 of the flexible tube 1. When the packing lock 5 is inserted until the packing pressers 54 and 54 come into contact with the packing 2, the locking claws 53 and 53 are fitted into the crests of the flexible tube 1 from the inner peripheral side by elastic restoring force. Lock with. In this way, the packing 2 can be sandwiched between the packing retainers 54 and 54 and the end surface of the end portion 11 of the flexible tube 1 that is folded back.

By using such a packing locking tool 5, the packing 2 can be locked in a state of being accommodated in the cap nut 12, and the flexible tube 1 like the packing locking tools 3, 3 </ b> A, 3 </ b> B described above. Compared with the case where it is hung on the outer periphery, the possibility of dropout and breakage can be reduced. By shifting the cap nut 12 in the tube axis direction of the flexible tube 1, the exact number of packings 2 attached to the cap nut 12 can be confirmed.
(Embodiment 5)
FIG. 7: is sectional drawing explaining the use condition of the packing latching tool 6 which concerns on the 5th Embodiment of this invention. This packing locking tool 6 is similar to the packing locking tool 5 shown in FIG. The packing locking tool 6 is formed in a substantially U shape by a pair of locking pieces 61 and 61 and a connecting piece 62 that connects the base end portions of the pair of locking pieces 61 and 61. The pair of locking pieces 61, 61 have packing pressers 64, 64 projecting outward on the distal end side, respectively, and the base end portion on the outer side opposite to the connecting piece 62. It has the latching claws 63 and 63 which protruded, respectively. The pair of locking pieces 61, 61 constitutes an elastic locking portion and a packing holding portion, the connecting piece 62 constitutes an elastic locking portion, and the packing 2 is a cap nut provided at the end 11 of the flexible tube 1. 12 is accommodated.

  When the packing locking device 6 configured as described above is used, when the packing 2 is locked, the operator puts the annular packing 2 on the pair of locking pieces 61 and 61 of the packing locking device 6. After passing through the locking claws 63, 63, it is pushed from the end 11 of the flexible tube 1. Thus, the locking claws 63 and 63 get over the valley portion of the flexible tube 1 from the end portion 11 of the flexible tube 1 while the connecting piece 62 and the pair of locking pieces 61 and 61 are elastically deformed. Then, when the packing locking tool 6 is inserted until the packing pressers 64, 64 come into contact with the packing 2, the locking claws 63, 63 are fitted into the crests of the flexible tube 1 from the inner peripheral side by elastic restoring force. Lock with. Thus, the packing 2 can be sandwiched between the packing pressers 64 and 64 and the end face of the flexible tube 1. Even when such a packing locking tool 6 is used, the packing 2 can be locked in a state of being accommodated in the cap nut 12, and the possibility of dropping off can be reduced.

  Further, in this packing locking tool 6, the packing pressers 64, 64 are formed to protrude outward from a position retracted by a predetermined distance D from the distal end portions of the locking pieces 61, 61, and between the distal end portions. The step portions 65, 65 are configured. This is because the packing locking tool 6 formed in a substantially U shape is inserted into the flexible tube 1 from the side of the connecting piece 62 and locks, so that the distal ends of the pair of locking pieces 61 and 61 are bent. This is because it is difficult to pull out the packing lock 6 by simply forming the packing retainers 64 and 64.

In this way, the packing pressers 64, 64 are formed so as to protrude from the position one step down from the tip of the locking pieces 61, 61, and the step portions 65, 65 are formed. By locking the tool to the parts 65 and 65 and moving them close to each other, the locking pieces 61 and 61 can be bent and the packing locking tool 61 and the packing 2 can be easily removed.
(Embodiment 6)
FIG. 8 is a six-sided view of a packing locking tool 6A according to a sixth embodiment of the present invention. This packing locking tool 6A is similar to the packing locking tool 6 shown in FIG. 6 described above, and corresponding portions are denoted by the same reference numerals, and description thereof is omitted. In the present embodiment, a connecting piece 62A that connects the base end portions of the pair of locking pieces 61, 61 parallel to each other is formed in a substantially V shape. The pair of locking pieces 61, 61 constitute a packing holding part, and the connecting piece 62A constitutes an elastic locking part.

  Using the packing locking tool 6A configured as described above, when the packing 2 is locked, the operator can connect the annular packing 2 to the connecting piece 62A of the packing locking tool 6A and the pair of locking pieces 61, After being inserted through 61, the packing locking tool 6 </ b> A is pushed from the end portion 11 of the flexible tube 1. As a result, the engaging claws 63, 63 get over the valley portion of the flexible tube 1 from the end portion 11 of the flexible tube 1 while the connecting piece 62 </ b> A is elastically deformed. Then, when the packing locking tool 6 is inserted until the packing pressers 64, 64 come into contact with the packing 2, the locking claws 63, 63 are fitted into the crests of the flexible tube 1 from the inner peripheral side by elastic restoring force. Lock with. Thus, the packing 2 can be sandwiched between the packing pressers 64 and 64 and the end face of the flexible tube 1. Even when such a packing locking tool 6A is used, the packing 2 can be locked in a state of being accommodated in the cap nut 12, and the possibility of dropping off can be reduced.

  Moreover, in this packing latching tool 6A, the substantially V-shaped connecting piece 62A is easily elastically deformed, and while preventing the packing 2 from falling off, an incidental work by a shipping operator or a detaching work by a field worker is possible. Can be easily performed.

DESCRIPTION OF SYMBOLS 1 Flexible pipe 11 End part 12 Cap nut 2 Packing 3 Packing locking tool 31 Curved piece 32 Connection piece 3A Packing lock tool 31A Curved piece 32A Connection piece 33A Protruding part 3B Packing lock tool 31B, 35B Holding piece 32B Connection piece 36B 37B Locking claw 5 Packing locking tool 51 Insertion piece 52 Connection piece 53 Locking claw 54 Packing presser 6, 6A Packing locker 61 Locking piece 62, 62A Connection piece 63 Locking claw 64 Packing presser 65 Step part

Claims (13)

A packing locking tool for locking the packing used for connecting the end portion of the flexible tube with another piping material in an airtight state to the flexible tube,
An elastic locking part that is fitted into a part of the flexible tube by being elastically deformed and configured to be locked to a part of the flexible pipe by exerting an elastic restoring force;
A packing retainer formed continuously with the elastic locking portion and configured to hold at least one packing. A pair of curved pieces and a connecting piece for connecting the base end portions of the pair of curved pieces are formed in a substantially C shape or a substantially U shape,
The pair of curved pieces constitutes the elastic locking portion, and the opposing surfaces are fitted into the valley portion of the flexible tube from the outer periphery and locked,
2. The packing locking tool according to claim 1, wherein the connecting piece constitutes the packing holding portion and is inserted through the annular packing to hold the packing. A pair of gripping pieces and a connecting piece for connecting the base ends of the pair of gripping pieces are formed in a substantially U shape or a substantially J shape,
The pair of gripping pieces constitute the elastic locking portion, each having a locking claw projecting inwardly at the tip thereof, from both sides of the inner and outer periphery of the cap nut attached to the end of the flexible tube Each gripping piece is inserted, and the locking claw is locked to the unevenness of the flexible tube or the rear end of the cap nut,
The packing locking tool according to claim 1, wherein the connecting piece constitutes the packing holding portion, is inserted into the annular packing, and holds the packing on the front end side of the cap nut. A pair of insertion pieces and a connecting piece for connecting the base end portions of the pair of insertion pieces are formed in a substantially U shape,
Each of the pair of insertion pieces has a locking claw protruding outward at a tip portion thereof, and a packing presser protruding outwardly on the side opposite to the connection piece at a base end portion. Consists of elastic locking part and packing holding part,
The packing is accommodated in a cap nut provided at an end of the flexible pipe,
The pair of insertion pieces are inserted into the annular packing from the tip thereof, and the locking claw is fitted into the mountain portion of the flexible tube from the inner peripheral side to be locked. 2. The packing latch according to claim 1, wherein the packing is sandwiched between end faces of the pipes. A pair of locking pieces and a connecting piece that connects the base end portions of the pair of locking pieces are formed in a substantially U shape,
Each of the pair of locking pieces has a packing presser protruding outward on the distal end side, and has a locking claw protruding outward on the side opposite to the connecting piece. The elastic locking portion and the packing holding portion,
The packing is housed in a cap nut provided at an end of the flexible tube;
The pair of locking pieces are inserted into the annular packing from the base end portion thereof, and the locking claw is fitted into the mountain portion of the flexible tube from the inner peripheral side to be locked. The packing latch according to claim 1, wherein the packing is sandwiched between and an end surface of the flexible tube. The packing presser is formed to project outward from a position retracted by a predetermined distance from the distal end portions of the pair of locking pieces, thereby forming a step portion between the distal end portions,
The tool is locked to the stepped portions of the pair of locking pieces and displaced in proximity to each other, whereby the locking pieces are bent and the packing holding portion and the packing can be removed. 5. The packing locking tool according to 5. A pair of locking pieces parallel to each other, and a substantially V-shaped connecting piece for connecting between the base ends of the pair of locking pieces,
Each of the pair of locking pieces has a packing presser protruding outward on the distal end side, and has a locking claw protruding outward on the side opposite to the connecting piece. The packing holding part,
The connecting piece constitutes the elastic locking portion,
The packing is housed in a cap nut provided at an end of the flexible tube;
The connecting piece and the pair of locking pieces are inserted into the annular packing from the base end portion thereof, and the locking claw is fitted into the mountain portion of the flexible tube from the inner peripheral side and locked. The packing latch according to claim 1, wherein the packing is sandwiched between the packing presser and an end surface of the flexible tube.   A flexible pipe, wherein at least one packing is locked by the packing locking tool according to any one of claims 1 to 7. In the packing locking method of locking the packing used to connect the flexible pipe with the cap nut at the end to another piping material, the flexible pipe,
Using the substantially C-shaped or substantially U-shaped packing locking tool, the annular packing is inserted through the packing locking tool,
The packing locking tool through which the packing was inserted was elastically deformed, fitted into a part of the flexible tube from the outside, and the packing was inserted in a state where a part of the flexible tube was sandwiched by an elastic restoring force. A packing locking method, wherein the packing locking tool in a state is locked to the flexible pipe. From the elastic member formed in the substantially C shape or the substantially U shape by the pair of curved pieces and the connecting piece for connecting the base ends of the pair of curved pieces as the packing locking tool. Using packing fasteners consisting of
The packing locking method according to claim 9, wherein the opposed surfaces of the pair of curved pieces are fitted and locked into a valley portion of the flexible tube from the outer periphery. In the packing locking method of locking the packing used to connect the flexible pipe with the cap nut at the end to another piping material, the flexible pipe,
A locking claw that is formed in a substantially U shape by a pair of insertion pieces and a connecting piece that connects between the base end portions of the pair of insertion pieces, and the pair of insertion pieces protrudes outward at the distal end portion thereof. Each of which has a packing stopper having a packing presser projecting outwardly on the side opposite to the connecting piece, and the annular packing is inserted into a pair of packing stoppers. Insert the piece over the locking claw,
The pair of insertion pieces through which the packing is inserted are elastically deformed, the packing locking tool is fitted from the end of the flexible tube, and the locking claw is attached to the inner periphery of the flexible tube by elastic restoring force. A packing locking method, wherein the packing is clamped between the packing presser and the end face of the flexible tube in a state of being fitted and locked from the side. In the packing locking method of locking the packing used to connect the flexible pipe with the cap nut at the end to another piping material, the flexible pipe,
A pair of locking pieces and a connecting piece that connects between the base end portions of the pair of locking pieces are formed in a substantially U shape, and the pair of locking pieces protrude outwardly at the distal ends thereof. Each of the packing retainers has a packing retainer, and the base end portion has a locking claw that protrudes outwardly on the opposite side of the connecting piece. Insert the coupling piece and the pair of locking pieces beyond the locking claw,
The connecting piece through which the packing is inserted and the pair of locking pieces are elastically deformed, the packing locking tool is fitted from the end of the flexible tube, and the locking claw is ridged by the elastic restoring force. A packing locking method, wherein the packing is clamped between the packing presser and the end face of the flexible tube in a state where the packing is fitted into the portion from the inner peripheral side and locked. In the packing locking method of locking the packing used to connect the flexible pipe with the cap nut at the end to another piping material, the flexible pipe,
A pair of locking pieces parallel to each other and a substantially V-shaped connecting piece for connecting between the base end portions of the pair of locking pieces, the pair of locking pieces outwardly Each of which has a packing presser protruding at the base end, and a locking tool having a locking claw protruding outwardly on the opposite side of the connecting piece at the base end portion. Insert the coupling piece of the stopper and the pair of locking pieces beyond the locking claw,
The connecting piece through which the packing is inserted is elastically deformed, the packing locking tool is fitted from the end of the flexible tube, and the locking claw is engaged with the crest portion of the flexible tube from the inner peripheral side by elastic restoring force. A packing locking method, wherein the packing is clamped between the packing presser and the end face of the flexible tube in a state of being fitted and locked.

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