WO2021131221A1 - 管取付構造及びアースクリップ - Google Patents

管取付構造及びアースクリップ Download PDF

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Publication number
WO2021131221A1
WO2021131221A1 PCT/JP2020/037730 JP2020037730W WO2021131221A1 WO 2021131221 A1 WO2021131221 A1 WO 2021131221A1 JP 2020037730 W JP2020037730 W JP 2020037730W WO 2021131221 A1 WO2021131221 A1 WO 2021131221A1
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WO
WIPO (PCT)
Prior art keywords
tube
coil
knob
coil portion
axial direction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2020/037730
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
健一 沼田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyox Co Ltd
Original Assignee
Toyox Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toyox Co Ltd filed Critical Toyox Co Ltd
Priority to CN202080071536.6A priority Critical patent/CN115244784A/zh
Priority to EP20904293.6A priority patent/EP4083484B1/en
Priority to US17/782,382 priority patent/US11933438B2/en
Publication of WO2021131221A1 publication Critical patent/WO2021131221A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
    • H01R11/28—End pieces consisting of a ferrule or sleeve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L25/00—Construction or details of pipe joints not provided for in, or of interest apart from, groups F16L13/00 - F16L23/00
    • F16L25/01—Construction or details of pipe joints not provided for in, or of interest apart from, groups F16L13/00 - F16L23/00 specially adapted for realising electrical conduction between the two pipe ends of the joint or between parts thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose-connectors, i.e. single members engaging both hoses
    • F16L33/02—Hose-clips
    • F16L33/03—Self-locking elastic clips
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B2/00—Friction-grip releasable fastenings
    • F16B2/20—Clips, i.e. with gripping action effected solely by the inherent resistance to deformation of the material of the fastening
    • F16B2/22—Clips, i.e. with gripping action effected solely by the inherent resistance to deformation of the material of the fastening of resilient material, e.g. rubbery material
    • F16B2/24—Clips, i.e. with gripping action effected solely by the inherent resistance to deformation of the material of the fastening of resilient material, e.g. rubbery material of metal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B2/00—Friction-grip releasable fastenings
    • F16B2/20—Clips, i.e. with gripping action effected solely by the inherent resistance to deformation of the material of the fastening
    • F16B2/22—Clips, i.e. with gripping action effected solely by the inherent resistance to deformation of the material of the fastening of resilient material, e.g. rubbery material
    • F16B2/24—Clips, i.e. with gripping action effected solely by the inherent resistance to deformation of the material of the fastening of resilient material, e.g. rubbery material of metal
    • F16B2/248—Clips, i.e. with gripping action effected solely by the inherent resistance to deformation of the material of the fastening of resilient material, e.g. rubbery material of metal of wire
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
    • F16L11/11—Hoses, i.e. flexible pipes made of rubber or flexible plastics with corrugated wall
    • F16L11/118—Hoses, i.e. flexible pipes made of rubber or flexible plastics with corrugated wall having arrangements for particular purposes, e.g. electrically conducting
    • F16L11/1185—Hoses, i.e. flexible pipes made of rubber or flexible plastics with corrugated wall having arrangements for particular purposes, e.g. electrically conducting electrically conducting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
    • F16L11/12—Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting
    • F16L11/127—Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting electrically conducting
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • H01R4/60—Connections between or with tubular conductors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • H01R4/64—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • H01R4/66—Connections with the terrestrial mass, e.g. earth plate, earth pin
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05F—STATIC ELECTRICITY; NATURALLY-OCCURRING ELECTRICITY
    • H05F3/00—Carrying-off electrostatic charges
    • H05F3/02—Carrying-off electrostatic charges by means of earthing connections

Definitions

  • the present invention relates to a pipe mounting structure used to release static electricity generated in a flexible pipe such as a hose or a tube, and an earth clip used for the pipe mounting structure.
  • a hose whose conductive wire is exposed on the surface of the hose is fitted into a metal pipe that is grounded, and a ground member is fitted into the connection portion between the metal pipe and the hose.
  • a hose connection structure in which the ground member is brought into contact with the metal pipe and the conductive wire on the surface of the hose (see, for example, Patent Document 1).
  • the ground member has a coil portion made of a metal wire and a pair of knob portions, and the inner diameter of the coil portion is expanded by the operation of picking the knob portion, and the elastic force of the coil portion is increased by the release operation of the knob portion. It is configured to return to the original inner diameter.
  • the method of attaching the ground member is to fit the ground member in advance on the metal pipe side, and after the hose is fitted in the metal pipe, the coil part is expanded by the knob operation to expand the diameter of the coil part, and the spiral provided on the hose.
  • the earth member is rotated so as to be in the same direction as the spiral direction of the shaped reinforcing member. With this rotation, the hose and the metal pipe are tightened by releasing the knob portion in a state where a part of the coil portion is in contact with the metal pipe. By this tightening, the coil portion is kept in contact with both the conductive wire of the hose and the metal pipe, and the conductive wire of the hose is electrically connected to the metal pipe via the coil portion.
  • the static electricity is discharged from the conductive wire through the coil portion to the metal pipe. Further, by increasing the inner diameter of the coil portion from the metal pipe side toward the hose side, the ground member can be firmly attached even if the hose is thick.
  • the pipe mounting structure according to the present invention is a pipe mounting structure in which a ground clip is mounted over a grounded conductive tube and a flexible tube inserted into the outer surface of the conductive tube.
  • the earth clip includes a coil portion attached to the outer surface of the conductive tube and the outer peripheral surface of the flexible tube, and a pair of knob portions protruding from both ends in the axial direction of the coil portion and facing each other.
  • One of the pair of knobs is characterized by having an asymmetrically shaped index portion that is directional in the axial direction of the coil.
  • the ground clip according to the present invention is a ground clip attached over a grounded conductive tube and a flexible tube inserted into the outer surface of the conductive tube.
  • a pair of knobs a coil portion attached to the outer surface of the conductive tube and the outer peripheral surface of the flexible tube, and a pair of knobs protruding from both ends in the axial direction of the coil and facing each other are provided.
  • One knob portion is characterized by having an asymmetrically shaped index portion that is directional in the axial direction of the coil portion.
  • the present invention is a pipe mounting structure D to which a ground clip C is attached across the conductive pipe A and the flexible pipe B as shown in FIGS. 1 to 6, and a ground clip C used for the pipe mounting structure D.
  • These tube mounting structures D and earth clip C generate static electricity when food powders or powders such as wheat, soybeans, and seasonings, or powders or powders in other fields are transported by pipe. It is provided to escape.
  • the conductive tube A is a non-deformable tube made of a conductive material such as a metal pipe, and is attached so that its outer surface A1 is exposed to equipment A2 such as a manufacturing machine.
  • the flexible tube B is provided with an electric conductor made of a flexible conductive material at least in a part of the outer peripheral surface thereof.
  • the flexible tube B includes a flexible tube body B1 and a conductor B2 exposed on the outer surface of the tube body B1 as main components. Further, it is preferable to include a reinforcing member B3 that spirally projects along the outer surface of the pipe body B1 and the outer surface of the conductor B2.
  • the conductor B2 is arranged in a linear or spiral shape in the axial direction along the outer surface of the tube body B1.
  • the outer surface of the pipe body B1 and the outer surface of the conductor B2 are exposed except for the reinforcing member B3.
  • the inner diameter of the connecting side end B1a to be inserted into the conductive tube A is set to be substantially the same as or slightly smaller than the outer diameter of the conductive tube A, and the connecting side end B1a is slightly enlarged to conduct conductivity. It is preferable to insert it into the tube A.
  • FIG. 1 As a specific example of the pipe mounting structure D, two grounded conductive pipes A are provided so as to correspond to both ends of the flexible pipe B. By inserting and connecting both the connection side end portions B1a of the flexible pipe B to the two conductive pipes A, the pipe connection portion is grounded. Further, although not shown as another example, electrical insulation is performed when two conductive tubes A are directly or indirectly wire-bonded to each other, or when a plurality of flexible tubes B are connected in series with an electrically insulating pipe sandwiched between them. It is possible to make changes such as grounding the flexible pipe and wire bonding when one end of the flexible pipe B is connected to the conductive pipe A with the electrically insulating pipe sandwiched between them. As a result, in any of these cases, grounding is performed for each pipe connection portion.
  • the conductor B2 is formed so as to be exposed as a strip-shaped layer having a predetermined width extending in the axial direction of the tube body B1. Further, if necessary, a conductive wire (not shown) is spirally sandwiched between the outer surface of the conductor B2 and the reinforcing member B3 so that the surface of the conductive wire is crimped to the outer surface of the conductor B2. It is preferable to arrange it.
  • the shape of the conductor B2 may be changed to a linear shape, or the number of the conductors B2 may be a plurality at predetermined intervals in the circumferential direction as described in Japanese Patent Application Laid-Open No. 2002-005372. Changes such as main placement are possible.
  • the earth clip C is configured by bending a conductive wire such as an elastically deformable metal wire. More specifically, the ground clip C projects radially from the coil portion 1 attached to the outer surface A1 of the conductive tube A and the outer peripheral surface of the flexible tube B and the axially both ends 11 and 12 of the coil portion 1.
  • a pair of knobs 2 facing each other in the circumferential direction are provided as main components.
  • the earth clip C is configured so that the coil portion 1 elastically expands and deforms by a "picking operation" in which a pair of knob portions 2 are pinched and relatively approached and moved in the circumferential direction. In this enlarged diameter state, the coil portion 1 is elastically reduced in diameter and deformed by the "release operation” in which the pair of knob portions 2 are loosened and relatively separated and moved in the circumferential direction.
  • the coil portion 1 is attached so as to wrap around the outer peripheral surface of the flexible tube B, and is configured to tighten a predetermined position in the axial direction of the flexible tube B in the radial direction.
  • the coil portion 1 can be moved in the axial direction along the outer peripheral surface of the flexible tube B by the diameter expansion deformation by the "picking operation", and the flexible tube B is deformed by the diameter reduction operation by the "release operation”.
  • the size is set to tighten in the radial direction.
  • the flexible pipe B since the flexible pipe B includes the reinforcing member B3 that protrudes in a spiral shape, the coil portion 1 is screwed between the reinforcing members B3 (valley portion).
  • the flexible tube B is arranged so as not to be displaced in the axial direction. Further, although not shown as another example, it can be attached to a flexible pipe B having a smooth outer peripheral surface (flat) without the reinforcing member B3.
  • the coil portion 1 is preferably formed in a conical shape in which the diameter gradually increases from the opening on the conductive tube A side toward the opening on the flexible tube B side.
  • the inner diameter of the one end opening side of the coil portion 1 facing the flexible tube B in the radial direction is larger than the inner diameter of the other end opening side facing the conductive tube A in the radial direction.
  • a pair of knobs 2 are formed in the coil portion 1 at one end 11 facing the flexible tube B and at the other end 12 facing the conductive tube A, respectively, radially continuously in the radial direction of the coil portion 1.
  • one knob portion 21 is continuously provided on either one end portion 11 or the other end portion 12 of the coil portion 1, and the other knob portion 22 is provided on the other end portion 11 or the other end portion 12. It will be installed continuously. As shown in the drawing, it is preferable that one knob portion 21 and the other knob portion 22 are integrally formed by bending in the same manner as in the bending process of the coil portion 1 made of a conductive wire rod.
  • One of the pair of knobs 2 has an index portion 21a that is directional in the axial direction of the coil portion 1.
  • the index portion 21a is a mark for alerting the operator to the mounting direction of the earth clip C with respect to the conductive pipe A and the flexible pipe B, and is formed in an asymmetrical shape in the axial direction of the coil portion 1.
  • the other knob portion 22 does not have the index portion 21a and is formed in a symmetrical shape in the axial direction of the coil portion 1, and is configured to have a structure different from that of the one knob portion 21. In the case shown in FIGS.
  • one knob portion 21 having the index portion 21a is attached to one end portion 11 on the large diameter side facing the flexible tube B in the coil portion 1.
  • the other knob portion 22 which is continuously provided and does not have the index portion 21a is continuously provided at the other end portion 12 on the small diameter side facing the conductive tube A in the coil portion 1.
  • the orientation of the coil portion 1 can be recognized by the index portion 21a having an asymmetrical shape in the axial direction.
  • the index portion 21a is preferably formed by bending before and after bending one of the knob portions 21.
  • the index portion 21a preferably has a pointed portion 21b protruding in the axial direction of the coil portion 1.
  • the pointed portion 21b is configured so that the directivity in the axial direction of the coil portion 1 can be easily recognized from the appearance and the feel of the fingertip, such as an acute-angled pointed shape.
  • one knob portion 21 is omitted.
  • the entire shape of one of the knobs 21 is formed into a triangle by bending it into a character shape.
  • the index portion 21a and the pointed portion 21b are integrally molded on one of the knob portions 21.
  • the other knob portion 22 is bent into a substantially U shape, and the entire shape of the other knob portion 22 is formed into a quadrangle.
  • one knob portion 21 is bent into a substantially square shape so that the entire shape of the one knob portion 21 is formed into a triangle. ing.
  • the index portion 21a and the pointed portion 21b are integrally molded on one of the knob portions 21.
  • the other knob portion 22 is bent into a substantially U shape, and the entire shape of the other knob portion 22 is formed into a quadrangle.
  • one knob portion 21 is bent in an annular shape so that the entire shape of the one knob portion 21 is formed in a substantially circular shape. ..
  • the index portion 21a is integrally molded with one of the knob portions 21.
  • the other knob portion 22 is bent into a substantially U shape, and the entire shape of the other knob portion 22 is formed into a quadrangle. In the case shown in FIG.
  • one knob portion 21 is bent into an abbreviation shape, and the entire shape of the one knob portion 21 is formed into a triangle. ing.
  • the index portion 21a and the pointed portion 21b are integrally molded on one of the knob portions 21.
  • the other knob portion 22 is bent in an annular shape so that the overall shape of the other knob portion 22 is formed in a substantially circular shape.
  • the tip of one knob portion 21 protrudes radially in the radial direction of the coil portion 1 from the tip of the other knob portion 22, and has a common configuration.
  • one knob portion 21 has the index portion 21a and the pointed portion 21b, the other knob portion 22 and the coil portion 1 are relatively arranged to face each other in the circumferential direction.
  • the "picking operation" that moves close to each other can be performed smoothly and has excellent operability.
  • one knob portion 21 has a pointed portion having an acute-angled shape.
  • the substantially square-shaped index portion 21a and the pointed portion 21b formed on one knob portion 21 are set larger in the axial direction of the coil portion 1 than the other knob portion 22. Since it is possible, the coil portion 1 has excellent directivity in the axial direction without deteriorating the stability of the "picking operation".
  • one knob portion 21 is used as an index portion 21a or a pointed portion 21b to bend a shape other than the illustrated example, and the other knob portion 22 is U-shaped or U-shaped.
  • the tip of one knob portion 21 and the tip of the other knob portion 22 are similarly projected in the radial direction of the coil portion 1, and the tip of the other knob portion 22 is a coil portion rather than the tip of one knob portion 21. It is also possible to make changes such as projecting radially in the radial direction of 1.
  • the index portion 21a and the pointed portion 21b possessed by one of the knob portions 21 are not limited to those obtained by bending in the illustrated example, and other members such as fixing of another part to one knob portion 21 and coating with paint are not limited to those. It is also possible to form the coil portion 1 in an asymmetrical shape in the axial direction by the secondary processing according to the above.
  • FIGS. 6A to 6C as the pipe mounting structure D shown in FIG. 1, one end of the flexible pipe B (the right end side end B1a in FIG. 1) is one (in FIG. 1).
  • the work procedure for connecting to the conductive tube A (on the right side) will be described.
  • the coil portion 1 is enlarged and deformed by the "picking operation" of the pair of knob portions 2 of the earth clip C, and is temporarily fixed through the conductive tube A as shown in FIG. 6A. At this time, it is necessary to arrange the coil portion 1 so that the large-diameter opening side faces the flexible tube B.
  • the one knob portion 21 and the index portion 21a side connected to one end portion 11 on the large diameter side of the coil portion 1 are passed through the conductive tube A toward the flexible tube B. ..
  • the side of the other knob portion 22 connected to the other end portion 12 on the small diameter side of the coil portion 1 faces the conductive tube A.
  • one end of the flexible tube B (the right side end portion B1a in FIG. 1) is inserted into one (right side in FIG. 1) conductive tube A.
  • the coil portion 1 can be moved toward the flexible tube B while expanding and deforming the diameter of the coil portion 1 by the “picking operation” of the pair of knob portions 2.
  • the "release operation” is performed after rotating about one turn or one and a half turns in the circumferential direction along the reinforcing member B3 spirally protruding from the flexible tube B.
  • This "release operation” one end portion 11 on the large diameter side of the coil portion 1 elastically adheres to the outer surface of the conductor B2 of the flexible tube B, and the opposite end portion 11 on the small diameter side of the coil portion 1
  • the other end portion 12 elastically adheres to the outer surface A1 of the conductive tube A.
  • one knob portion 21 and the other knob portion 22 have an asymmetrical relationship depending on the presence or absence of the index portion 21a. Therefore, the operator can distinguish one knob portion 21 and the index portion 21a from the other knob portion 22, and the orientation of the coil portion 1 can be easily recognized by the index portion 21a having an asymmetric shape in the axial direction. As a result, the operator can recognize the one knob portion 21 side where the index portion 21a is located and then arrange the one knob portion 21 side toward either the flexible tube B or the conductive tube A. become. Therefore, the operator can easily identify the normal mounting direction of the ground clip C and set it in the correct direction.
  • the conductive tube A and the flexible tube B are undoubtedly the earth clip C, even for an operator with little work experience, as compared with the conventional one in which the pair of knobs have the same shape and it is difficult to recognize the direction of the coil portion. It becomes possible to connect electrically via. Therefore, it is possible to reliably prevent the occurrence of an explosion or fire due to electrostatic discharge in a flammable atmosphere. Further, it is possible to prevent the coil portion 1 and the flexible pipe B from being damaged due to the unreasonable reverse mounting of the coil portion 1 by the operator.
  • the index portion 21a it is preferable to form the index portion 21a by bending.
  • the index portion 21a can be easily formed by continuous bending before and after bending one of the knob portions 21. Therefore, the index portion 21a can be easily manufactured without secondary processing. As a result, it is durable and the cost can be reduced as compared with the structure requiring secondary processing.
  • the bent index portion 21a does not deform even if the ground clip C is removed due to the attachment / detachment of the flexible tube B to the conductive tube A, the operator permanently attaches the ground clip C in the normal mounting direction. It can be identified and can be set in the correct orientation for a long period of time.
  • the index portion 21a has a pointed portion 21b protruding in the axial direction of the coil portion 1.
  • the shape of the pointed portion 21b makes it possible to easily recognize the directivity of the coil portion 1 in the axial direction from the appearance and tactile sensation. Therefore, the operator can more easily identify the normal mounting direction of the ground clip C and set it in the correct direction. As a result, even an operator with little work experience can more reliably electrically connect the conductive tube A and the flexible tube B via the ground clip C.
  • one knob portion 21 having the index portion 21a is connected to one end portion 11 of the coil portion 1 facing the flexible tube B, and the coil facing the conductive tube A.
  • the other knob portion 22 is connected to the other end portion 12 of the portion 1, but the present invention is not limited to this, and the other knob portion 22 may be arranged in reverse. That is, one knob portion 21 and the index portion 21a are connected to the other end portion 12 of the coil portion 1 facing the conductive tube A, and the other knob portion 22 having no index portion 21a is the flexible tube B. It is also possible to be connected to one end portion 11 of the opposing coil portions 1. Even with such a reverse arrangement setting, the same operations and advantages as those shown in the illustrated example can be obtained.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Clamps And Clips (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Joints That Cut Off Fluids, And Hose Joints (AREA)
PCT/JP2020/037730 2019-12-23 2020-10-05 管取付構造及びアースクリップ Ceased WO2021131221A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN202080071536.6A CN115244784A (zh) 2019-12-23 2020-10-05 管安装结构及接地夹
EP20904293.6A EP4083484B1 (en) 2019-12-23 2020-10-05 Hose attachment structure
US17/782,382 US11933438B2 (en) 2019-12-23 2020-10-05 Hose attachment structure and ground clip

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019231493A JP6948723B2 (ja) 2019-12-23 2019-12-23 管取付構造及びアースクリップ
JP2019-231493 2019-12-23

Publications (1)

Publication Number Publication Date
WO2021131221A1 true WO2021131221A1 (ja) 2021-07-01

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JP7611595B2 (ja) * 2023-04-11 2025-01-10 株式会社トヨックス 可撓管保護具

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JP2002005372A (ja) 2000-06-19 2002-01-09 Toyox Co Ltd ホース接続構造
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JP2013036503A (ja) * 2011-08-04 2013-02-21 Toyox Co Ltd 管接続構造
JP2015102192A (ja) * 2013-11-26 2015-06-04 株式会社ノーリツ バンド
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EP4083484B1 (en) 2026-03-25
EP4083484A4 (en) 2023-12-27
EP4083484A1 (en) 2022-11-02
CN115244784A (zh) 2022-10-25
US11933438B2 (en) 2024-03-19
JP2021099138A (ja) 2021-07-01
US20230011828A1 (en) 2023-01-12
JP6948723B2 (ja) 2021-10-13

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