WO2024106062A1 - グロメット - Google Patents

グロメット Download PDF

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Publication number
WO2024106062A1
WO2024106062A1 PCT/JP2023/036660 JP2023036660W WO2024106062A1 WO 2024106062 A1 WO2024106062 A1 WO 2024106062A1 JP 2023036660 W JP2023036660 W JP 2023036660W WO 2024106062 A1 WO2024106062 A1 WO 2024106062A1
Authority
WO
WIPO (PCT)
Prior art keywords
annular
peripheral edge
space
grommet
hole
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/JP2023/036660
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
浩孝 清田
健 小野田
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.)
Yazaki Corp
Original Assignee
Yazaki Corp
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 Yazaki Corp filed Critical Yazaki Corp
Priority to CN202380041721.4A priority Critical patent/CN119234365A/zh
Priority to DE112023004779.0T priority patent/DE112023004779T5/de
Publication of WO2024106062A1 publication Critical patent/WO2024106062A1/ja
Priority to US18/935,404 priority patent/US20250062056A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/56—Insulating bodies
    • H01B17/58—Tubes, sleeves, beads, or bobbins through which the conductor passes
    • H01B17/583—Grommets; Bushings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • 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
    • F16L5/00—Devices for use where pipes, cables or protective tubing pass through walls or partitions
    • F16L5/02—Sealing
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/22—Installations of cables or lines through walls, floors or ceilings, e.g. into buildings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/0207—Wire harnesses
    • B60R16/0215—Protecting, fastening and routing means therefor
    • B60R16/0222—Grommets

Definitions

  • the present invention relates to a grommet.
  • wire harnesses wiring materials such as electric wires are inserted through a through hole provided in an object to be inserted (for example, a body panel of a vehicle, etc.), and the wiring materials are pulled from one space separated by the object to the other space.
  • a grommet is attached to the object to protect the wiring materials from the periphery of the through hole and to close the gap between the through hole and the wiring materials in order to prevent liquid from entering the gap.
  • a grommet is composed of a base member made of a hard synthetic resin material and an annular water-stopping member made of a flexible synthetic resin material such as rubber, and is inserted into the through hole to bring the water-stopping member into close contact with the periphery of the through hole in the object to be inserted.
  • Patent Document 1 discloses a grommet configured in this way.
  • an annular lip is sometimes provided on the water-stopping member to improve the water-stopping ability between the water-stopping member and the periphery of the through hole.
  • This lip protrudes in the direction of insertion of the grommet into the through hole, and when the grommet is assembled to the periphery of the through hole, it abuts against the periphery and flexes to make a tight seal. For this reason, in this type of grommet, the lip is a factor that increases the insertion force into the through hole.
  • the present invention aims to provide a grommet that can reduce the insertion force.
  • the present invention comprises a base member made of a synthetic resin material, through which a conductive wiring material is inserted inside to be passed through a through hole of an object to be inserted from one space to the other space, and an annular grommet body that is assembled to the base member and placed in the one space at a position where installation is completed to the peripheral portion of the through hole of the object to be inserted, the base member having an annular flange that is placed in the one space at the installation completion position and is arranged coaxially opposite the annular plane of the annular peripheral portion of the one space side with a gap therebetween, and a tubular body that protrudes coaxially from the flange toward the other space and is inserted into the through hole at the installation completion position, and protrudes beyond the outer peripheral surface of the tubular body in the other space at the installation completion position, and has a tubular body that protrudes from the outer peripheral portion of the tubular body to the peripheral portion of the other space side from the other space side at the installation completion position.
  • the grommet body has a plurality of locking parts in the circumferential direction of the cylindrical body that come into contact with the grommet body from the base member, and the grommet body is provided with an annular water-stopping member made of a synthetic resin material that is softer and elastically deformable than the base member, and the water-stopping member has an annular main body that abuts coaxially against the annular wall surface of the flange on the peripheral edge side, an annular outer peripheral lip that protrudes from the main body toward the peripheral edge so as to move away from the hole axis of the through hole as it approaches the peripheral edge on the same axis, and is flexibly deformed at the installation completion position to fit closely to the annular flat surface of the peripheral edge over the entire circumference, and an annular inner peripheral lip that protrudes toward the peripheral edge from the inner peripheral edge side of the main body so as to move closer to the hole axis of the through hole as it approaches the peripheral edge on the same axis, and is flexibly deformed at the
  • the grommet of the present invention when the cylindrical body is inserted into the through hole from one space and comes into contact with the annular flat surface of the periphery, the outer lip and the inner lip begin to flex and deform without getting caught on the periphery. Therefore, the grommet of the present invention can reduce the insertion force into the through hole.
  • FIG. 1 is a perspective view showing an embodiment of a grommet after it has been attached to an object to be inserted therethrough.
  • FIG. 2 is a plan view of the grommet of the embodiment after it has been attached to an object to be inserted, as viewed from the cylindrical body side.
  • FIG. 3 is a plan view of the grommet of the embodiment after it has been attached to an object to be passed through, as viewed from the tubular body side.
  • FIG. 4 is a cross-sectional view taken along line XX of FIG.
  • FIG. 5 is a perspective view of the grommet of the embodiment before it is attached to an object to be inserted, as viewed from a different angle.
  • FIG. 6 is a cross-sectional view taken along line XX in FIG.
  • FIG. 7 is an exploded perspective view showing the grommet of the embodiment.
  • FIG. 8 is an exploded perspective view of the grommet of the embodiment as viewed from a different angle.
  • FIG. 9 is an exploded perspective view showing the grommet of the embodiment separated into two base members and a grommet body after assembly.
  • FIG. 10 is an exploded perspective view of the base member and the waterproof member.
  • FIG. 11 is an exploded perspective view of the grommet body.
  • the reference numeral 1 in Figures 1 to 9 indicates a grommet of this embodiment.
  • This grommet 1 protects the conductive wiring material We, which passes from one space S1 to the other space S2 through a through hole 502 of an object to be inserted 501, from the peripheral portion 503 of the through hole 502 in the object to be inserted 501, and prevents liquid (water, etc.) from entering the gap between the annular peripheral portion 503 and the wiring material We ( Figures 1 to 6). Therefore, this grommet 1 is attached to the peripheral portion 503 of the through hole 502 of the object to be inserted 501 after the wiring material We has been inserted.
  • the wiring material We refers to, for example, an electric wire (such as an electric wire used as a communication line or an electric wire used as a power supply line).
  • the object 501 to be inserted is a member through which the wiring material We is inserted, and in the case of a vehicle, refers to a wall such as a panel of the vehicle body.
  • the wiring material We is routed between one space S1 and the other space S2 separated by the object 501 by inserting it through the through hole 502 of the object 501 to be inserted.
  • the wiring material We is responsible for communication between the devices in the one space S1 and the other space S2, and for supplying power to electrical equipment in the one space S1 from a power source in the other space S2.
  • the peripheral portion 503 of the through hole 502 of the object to be inserted 501 has an annular flat portion (hereinafter referred to as the "annular flat portion”) 504 and an annular protrusion portion (hereinafter referred to as the “annular protrusion portion”) 505 protruding from the end portion (inner peripheral edge portion 504a) of the inner peripheral edge of the annular flat portion 504 toward the other space S2 ( Figures 1 to 6).
  • the grommet 1 is attached to the annular flat portion 504 and the annular protrusion portion 505 at the peripheral portion 503.
  • the object to be inserted 501 is formed by press molding, at which time the annular flat portion 504 and the through hole 502 are formed.
  • the annular protrusion portion 505 is formed by burring the peripheral edge of the through hole 502. Therefore, in the peripheral portion 503, a bent portion 506 is formed between the annular flat portion 504 and the annular protrusion portion 505, where the outer side of the bend is bent to form an arc-shaped surface 506a (FIGS. 4 and 6).
  • the through hole 502 is formed in a circular shape
  • the annular flat portion 504 and the annular protrusion portion 505 are each formed in a circular ring shape.
  • the grommet 1 comprises a base member 10X through which the wiring material We is inserted inside (Figs. 1 to 10).
  • This base member 10X may consist of a single member, or may consist of multiple members assembled together.
  • the base member 10X shown here comprises two base members (a first base member, a second base member) that are assembled together. These two base members may each be members with different shapes, or each may be the same member with the same shape. In the grommet 1 shown here, the two base members are made of the same member with the same shape (base members 10, 10) (Figs. 1 to 10).
  • This base member 10X has at least an annular flange 20 and a cylindrical body 30 on the same axis, and the wiring material We is inserted inside these (Figs. 1 to 9).
  • the base member 10X shown here has a tubular body 40 on the same axis as these, and the wiring material We is inserted inside these (Figs. 1 and 3 to 9).
  • the cylindrical body 30 protrudes in one direction from the flange 20, and the tubular body 40 protrudes in the other direction from the flange 20 on the same axis.
  • the base members 10, 10 are assembled together to form an annular flange 20, a cylindrical body 30, and a tubular body 40 on the same axis.
  • a holding mechanism hereinafter referred to as the “base holding mechanism" 50 is provided between the two base members 10, 10 to hold them together in their assembled state ( Figures 1, 3, 5, and 7 to 9).
  • the grommet 1 also includes an annular grommet body 60 that is assembled to the base member 10X (the base members 10, 10 assembled to each other) (Figs. 1, 3 to 9, and 11).
  • the grommet body 60 is disposed in one space S1 at the position where the grommet 1 is completely attached to the peripheral portion 503, in order to prevent liquid (such as water) from entering the other space S2 from one space S1 via the through hole 502 (Fig. 4). Note that in the following, when the term "completed attachment position" is used, it simply refers to the position where the grommet 1 is completely attached to the peripheral portion 503.
  • the base member 10X (base member 10, 10) is molded using an insulating hard synthetic resin material (hereinafter referred to as "hard resin").
  • hard resin insulating hard synthetic resin material
  • the base member 10X (base member 10, 10) is molded using a hard resin such as plastic, for example.
  • the two base members 10, 10 are assembled by matching their joint surfaces 10a ( Figures 2, 3, 7, and 8). In this assembled state, the two base members 10, 10 sandwich the wiring material We, and the wiring material We is inserted through them.
  • a circular ring-shaped flange 20 by assembling the two base members 10, 10, a circular ring-shaped flange 20, a cylindrical tubular body 30, and a circular tubular body 40 are formed. Note that a straight tubular body 40 is given as an example here. However, the tubular body 40 may be bent after protruding from the flange 20.
  • the flange 20 is placed in one space S1 at the completed installation position, and is positioned coaxially opposite the annular plane 503a on the one space S1 side of the peripheral portion 503 with a gap therebetween ( Figure 4).
  • This annular plane 503a is provided on the annular flat plate portion 504.
  • the annular plane 503a shown here is the annular plane on the one space S1 side of the annular flat plate portion 504 itself.
  • This flange 20 is formed in the shape of a circular ring.
  • this flange 20 is formed in a shape similar to the circular ring-shaped flat plate 503a.
  • the flange 20 shown here has its circular outer peripheral edge portion 20a positioned opposite the annular plane 503a, and the wiring material We is inserted inside the circular inner peripheral edge portion 20b ( Figure 4).
  • the outer peripheral edge 20a is arranged coaxially opposite the inner peripheral edge 504a of the annular flat plate portion 504 on the annular plane 503a, with a gap in the axial direction of the through hole 502 in one space S1 ( Figure 4).
  • the two base members 10, 10 each have a split flange 11 that joins the joint surfaces 10a to form the flange 20 (Figs. 1 to 9).
  • the split flange 11 shown here is the flange 20 divided in half along the central axis, and is formed in a semicircular arc shape.
  • the tubular body 30 protrudes from the flange 20 coaxially toward the other space S2, and is inserted into the through hole 502 at the installation completion position (FIGS. 4 and 6). That is, the tip of the tubular body 30 that protrudes from the flange 20 is placed in the other space S2.
  • the tubular body 30 is formed in a cylindrical shape.
  • the tubular body 30 is formed so that the cross section perpendicular to the hole axis of the through hole 502 is similar in shape to the cross section perpendicular to the hole axis of the annular protrusion 505.
  • the tubular body 30 shown here protrudes from the inner peripheral edge 20b side of the flange 20 beyond the outer peripheral edge 20a, and the wiring material We is inserted inside (FIGS. 4 and 6).
  • Each of the two base members 10, 10 has a split tube 12 that joins the joint surfaces 10a to form a cylindrical body 30 (Figs. 2 and 4 to 9).
  • the split tube 12 shown here is the cylindrical body 30 divided in half along the central axis, and is formed in a semicircular arc shape.
  • the tubular body 40 protrudes from the flange 20 coaxially in the opposite direction to the cylindrical body 30 (Figs. 4 to 6).
  • This tubular body 40 is formed in a circular tube shape.
  • this tubular body 40 is formed so that the cross section perpendicular to the axis of the through hole 502 is similar in shape to the cross section perpendicular to the axis of the hole in the annular protrusion 505.
  • the tubular body 40 shown here protrudes from the inner peripheral edge 20b of the flange 20, and the wiring material We is inserted inside (Figs. 4 and 6).
  • Each of the two base members 10, 10 has a split tube 13 that joins the joint surfaces 10a to form the tubular body 40 (Figs. 1 and 3 to 9).
  • the split tube 13 shown here is the tubular body 40 divided in half along the central axis, and is formed in a semicircular arc shape.
  • the grommet 1 of this embodiment is provided with a waterproof member 71 on at least one of the joint surfaces 10a of the two base members 10, 10, which is made of a synthetic resin material (hereinafter referred to as "soft resin") that is softer and elastically deformable than the hard resin of the base members 10 and which eliminates gaps between the joint surfaces 10a ( Figures 7, 8, and 10).
  • soft resin synthetic resin material
  • the waterproof member 71 is molded using a synthetic resin material such as elastomer.
  • the waterproof member 71 is provided over the joint surfaces 10a of the split flange 11, split tube 12, and split pipe 13.
  • the base member 10 shown here has a groove 10b formed in one of the two joint surfaces 10a from the split flange 11 to the split pipe 13, and the waterproof member 71 is fitted into the groove 10b ( Figure 10).
  • the waterproof member 71 protrudes from the groove 10b.
  • the waterproof member 71 is molded integrally with the base member 10 by two-color molding with the base member 10 or by insert molding into the base member 10 placed in a mold.
  • the waterproof member 71 may also be molded as a separate part from the base member 10 and attached to the groove 10b of the base member 10 with an adhesive or the like.
  • this base member 10X by assembling the two base members 10, 10, the waterproof member 71 protruding from the groove portion 10b of one joint surface 10a of one base member 10 is brought into close contact with the other joint surface 10a of the other base member 10.
  • the base holding mechanism 50 is a holding mechanism for holding the two base members 10, 10 with their respective joint surfaces 10a aligned.
  • This base holding mechanism 50 is provided at multiple locations between the two base members 10, 10.
  • the base holding mechanism 50 shown here comprises a piece 51 protruding from the joint surface 10a of one of the two base members 10, 10, and a claw-shaped first engagement portion 52 protruding from the wall surface of this piece 51 ( Figures 7 and 8).
  • the base holding mechanism 50 shown here is provided with an insertion opening 53 on the joint surface 10a of the other of the two base members 10, 10, through which one of the pieces 51 and the first locking portion 52 is inserted; a flexible portion 54 on the other of the two base members 10, 10 that is pushed and bent by the first locking portion 52 inserted from the insertion opening 53, and when the joint surfaces 10a of the two base members 10, 10 are brought together, the first locking portion 52 separates to release the deflection; and a second locking portion 55 on the other of the two base members 10, 10 that is disposed opposite the first locking portion 52 when the joint surfaces 10a of the two base members 10 are brought together, and that holds the two base members 10, 10 in a state in which their respective joint surfaces 10a are brought together (FIGS. 7 and 8).
  • Each of the two base members 10, 10 shown here has a set of a piece 51 and a first locking portion 52 at one circumferential end of the split tube 12, and a set of an insertion opening 53, a flexible portion 54, and a second locking portion 55 at the other circumferential end of the split tube 12.
  • the first locking portion 52 at one end of one split tube 12 is locked to the second locking portion 55 at the other end of the other split tube 12, and the second locking portion 55 at the other end of one split tube 12 is locked to the first locking portion 52 at one end of the other split tube 12.
  • the two base members 10, 10 have two base holding mechanisms 50 that connect the split tubes 12 and hold them in the connected state.
  • each of the two base members 10, 10 has a set of a piece portion 51 and a first locking portion 52 at one circumferential end of the split pipe 13, and a set of an insertion opening 53, a flexible portion 54, and a second locking portion 55 at the other circumferential end of the split pipe 13.
  • the first locking portion 52 at one end of one split pipe 13 is locked to the second locking portion 55 at the other end of the other split pipe 13
  • the second locking portion 55 at the other end of one split pipe 13 is locked to the first locking portion 52 at one end of the other split pipe 13.
  • the two base members 10, 10 have two base holding mechanisms 50 that connect the split pipes 13 and hold them in the connected state.
  • the grommet body 60 comprises an annular water-stopping member 60A made of soft resin (i.e., an elastically deformable synthetic resin material softer than the hard resin of the base member 10X (base member 10)) and an annular support member 60B made of a synthetic resin material harder than the soft resin of the water-stopping member 60A and integrated with the water-stopping member 60A (Figs. 1, 3 to 8, and 11).
  • the water-stopping member 60A is molded using a synthetic resin material such as an elastically deformable elastomer that is softer than the hard resin of the base member 10X (base member 10) and the support member 60B.
  • the support member 60B is made of, for example, the same hard resin as the base member 10X (base member 10) or a different hard resin having the same hardness as the hard resin of the base member 10X (base member 10), and is molded using a synthetic resin material such as plastic.
  • the water-stopping member 60A has an annular main body 61 that is coaxially abutted against the annular wall surface 20c on the peripheral edge 503 side of the flange 20 (Figs. 1, 4, 6 to 8, and 11).
  • This main body 61 is formed in a circular plate shape.
  • the main body 61 shown here is abutted against the wall surface 20c at the peripheral edge 20a of the flange 20 with its outer peripheral edge 61a protruding from the outer peripheral edge 20a of the flange 20 (Figs. 4 and 6).
  • this water-stopping member 60A has an annular outer peripheral lip 62 that protrudes from the main body 61 toward the peripheral portion 503 on the same axis so as to be pulled away from the axis of the through hole 502 as it approaches the peripheral portion 503, and flexes and deforms at the installation completion position to fit closely to the annular flat surface 503a of the peripheral portion 503 over the entire circumference, and an annular inner peripheral lip 63 that protrudes toward the peripheral portion 503 on the same axis from the inner peripheral portion 61b side of the main body 61 toward the peripheral portion 503 so as to be closer to the axis of the through hole 502 as it approaches the peripheral portion 503, and flexes and deforms at the installation completion position to fit closely to the annular flat surface 503a of the peripheral portion 503 over the entire circumference ( Figures 1, 3 to 9 and 11).
  • the outer peripheral lip 62 has two annular secondary lip portions 62b that protrude coaxially from the radially inner wall surface 62a (Figs. 4 and 6). When the outer peripheral lip 62 is in the installation completion position, it is flexed and deformed from its base on the main body 61 side, and the two secondary lip portions 62b are brought into close contact with the annular flat surface 503a of the peripheral edge portion 503.
  • the inner lip 63 has a radially outer wall surface 63a in close contact with the annular flat surface 503a of the peripheral portion 503 at the installation completion position (Fig. 4).
  • the inner lip 63 has a thin-walled portion 63b at its tip side that can be flexibly deformed (Figs. 4 and 6).
  • the inner lip 63 has a thin-walled portion 63b that is thinner at the tip side than at the base on the main body 61 side, and the thin-walled portion 63b is flexibly deformed at the installation completion position, and the radially outer wall surface 63a of the thin-walled portion 63b is in close contact with the annular flat surface 503a of the peripheral portion 503.
  • the inner lip 63 shown here may be one in which the wall surface 63a of the thin-walled portion 63b is in close contact with the arc-shaped surface 506a of the bent portion 506 of the peripheral portion 503 all around, or may be one in which the wall surface 63a of the thin-walled portion 63b is in close contact with the annular flat surface 503a of the peripheral portion 503 all around.
  • the water-stopping member 60A is integrated with the support member 60B.
  • the water-stopping member 60A is produced by two-color molding with the support member 60B, or is insert molded into the support member 60B contained in a mold, and is molded integrally with the support member 60B.
  • the water-stopping member 60A may also be molded as a separate part from the support member 60B, and attached to the support member 60B with adhesive or the like.
  • the support member 60B has an annular portion (hereinafter referred to as the "first annular portion") 65a that is arranged coaxially opposite to the annular abutment surface 61c of the wall surface 20c of the flange 20 in the main body 61 of the water-stopping member 60A with a gap therebetween (FIGS. 1, 3, 4, 6 to 8, and 11).
  • This first annular portion 65a is formed in the shape of a circular ring plate.
  • the base member 10X (the base members 10, 10 assembled together) fits the outer peripheral edge portion 20a of the flange 20 into the annular gap between the abutment surface 61c of the main body 61 and the first annular portion 65a.
  • the grommet main body 60 is assembled integrally with the outer peripheral edge portion 20a of the flange 20.
  • the support member 60B also has an annular portion (hereinafter referred to as the "second annular portion”) 65b that protrudes coaxially from the outer peripheral edge of the first annular portion 65a toward the outer peripheral edge 61a of the main body 61 of the water-stopping member 60A and abuts against the outer peripheral edge 61a all around ( Figures 1, 3 to 8, and 11).
  • This second annular portion 65b is formed in a cylindrical ring shape.
  • This water-stopping member 60A is integrally formed in a state of close contact with the outer peripheral edge of the first annular portion 65a and the inner wall surface of the second annular portion 65b, and the outer peripheral edge 61a of the main body 61 is integrally formed in a state of close contact with the abutting surface of the second annular portion 65b with the outer peripheral edge 61a.
  • the water-stopping member 60A has an annular portion 64 that is integrally formed in a state of close contact with the outer peripheral edge of the first annular portion 65a and the inner wall surface of the second annular portion 65b ( Figures 4, 6, and 11).
  • This annular portion 64 is formed in a cylindrical shape and protrudes from the main body 61 on the same axis in the opposite direction to the outer peripheral lip 62 and the inner peripheral lip 63.
  • the annular portion 64 is integrally formed in a state of close contact with the inner wall surface of the outer peripheral edge of the first annular portion 65a and the inner wall surface of the second annular portion 65b, and the main body 61 is integrally formed in a state in which the outer peripheral edge 61a is in close contact with the abutting surface of the second annular portion 65b with the outer peripheral edge 61a.
  • the outer peripheral edge 20a of the flange 20 is fitted inside the annular portion 64 of the water-stopping member 60A in the annular gap between the abutment surface 61c of the main body 61 of the water-stopping member 60A and the first annular portion 65a of the support member 60B.
  • an annular lip is formed on the inner peripheral surface of the annular portion 64, which is not described in detail, and is fitted tightly around the entire circumference against the outer peripheral surface of the outer peripheral edge 20a of the flange 20. This ensures that the grommet main body 60 is waterproof in the gap between the water-stopping member 60A and the support member 60B.
  • the grommet 1 configured in this manner includes a retention mechanism 80 that retains the assembled base member 10X (the assembled base members 10, 10) and the grommet body 60 on the peripheral portion 503 of the through hole 502 in the object 501 to be inserted (FIGS. 2 and 4 to 9).
  • the retention mechanism 80 shown here utilizes the elastic force associated with the elastic deformation of the outer peripheral lip 62 and inner peripheral lip 63 of the water-stopping member 60A, and holds the grommet 1 on the peripheral portion 503 by clamping the peripheral portion 503 between the outer peripheral lip 62 and inner peripheral lip 63 and the locking portion 81 described below that is provided on the base member 10X (base member 10).
  • the base member 10X has a locking portion 81 that protrudes beyond the outer peripheral surface 30a of the cylindrical body 30 in the other space S2 at the installation completion position, and that contacts the peripheral portion 503 from the other space S2 side in the other space S2 at the installation completion position (Figs. 4 to 9).
  • This locking portion 81 locks a portion of the peripheral portion 503 in the circumferential direction. Therefore, the base member 10X has multiple locking portions 81 in the circumferential direction of the cylindrical body 30.
  • the base member 10X also has a cantilevered locking piece 82 with a locking portion 81 at its free end in the other space S2 at the installation completion position (Fig. 2 and Fig. 4 to Fig. 9).
  • the locking piece 82 protrudes from the fixed end on the outer circumferential surface 30a side of the cylindrical body 30 to the one space S1 side in the other space S2 at the installation completion position, and the free end side protrudes from the outer circumferential surface 30a of the cylindrical body 30 (initial shape).
  • the locking piece 82 is formed with flexibility that allows it to bend and deform so as to change the amount of protrusion from the outer circumferential surface 30a on the free end side.
  • the locking piece 82 moves back and forth through the notch portion 30b, which is a cutout portion of the cylindrical body 30, due to its bending deformation (Fig. 2 and Fig. 4 to Fig. 9).
  • the combination of the locking portion 81, the locking piece portion 82, and the notch portion 30b is provided in multiple sets at equal intervals in the circumferential direction of the cylindrical body 30.
  • the cylindrical body 30 shown here has four sets of the combination of the locking portion 81, the locking piece portion 82, and the notch portion 30b at equal intervals in the circumferential direction.
  • two sets of the combination of the locking portion 81, the locking piece portion 82, and the notch portion 30b are provided in each of the split tubes 12 of the base member 10.
  • the locking piece 82 When the cylindrical body 30 is inserted into the through hole 502 from one space S1, the locking piece 82 receives a force from the annular protrusion 505 of the peripheral portion 503 and is deflected and deformed from its initial shape toward the notch 30b, passes through the position of the annular protrusion 505, and advances to the tip (hereinafter referred to as the "locking end") 505a ( Figures 4 to 6) of the annular protrusion 505, and begins to return to its initial shape when the force from the annular protrusion 505 is removed. Therefore, the locking piece 82 is positioned at the end of the locking end 505a of the annular protrusion 505 together with the locking portion 81.
  • the outer peripheral lip 62 and inner peripheral lip 63 of the water-stopping member 60A are deflected and deformed by contacting the annular flat surface 503a side of the peripheral portion 503 when a series of movements of the locking portion 81 and the locking piece 82 are occurring. Therefore, when the force (so-called insertion force) for inserting the grommet 1 into the through hole 502 is removed, the grommet 1 moves back toward one of the spaces S1 due to the elastic force caused by the elastic deformation of the outer lip 62 and the inner lip 63. As a result, the locking portion 81 comes into contact with the locking end 505a of the annular protrusion 505 and is locked by this locking end 505a (FIG. 4).
  • the annular protrusion 505 locks the locking portion 81 at the tip (locking end 505a) of the end protruding from the annular flat plate portion 504.
  • the annular locking end 505a locks the locking portion 81 at each location in the circumferential direction. Therefore, the peripheral portion 503 is clamped by the outer lip 62 and inner lip 63 of the water-stopping member 60A and the locking portions 81 of the base member 10X (base members 10, 10).
  • the outer peripheral lip 62 protrudes toward the peripheral portion 503 so as to be pulled away from the axis of the through hole 502 the closer it gets to the peripheral portion 503, and the inner peripheral lip 63 protrudes toward the peripheral portion 503 so as to be closer to the axis of the through hole 502 the closer it gets to the peripheral portion 503. Therefore, when the cylindrical body 30 is inserted from one space S1 into the through hole 502 and comes into contact with the annular flat surface 503a side of the peripheral portion 503, the outer peripheral lip 62 and the inner peripheral lip 63 begin to flex and deform without getting caught on the peripheral portion 503. Therefore, the grommet 1 of this embodiment can reduce the insertion force into the through hole 502.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Installation Of Indoor Wiring (AREA)
  • Insulating Bodies (AREA)
PCT/JP2023/036660 2022-11-14 2023-10-10 グロメット Ceased WO2024106062A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN202380041721.4A CN119234365A (zh) 2022-11-14 2023-10-10 索环
DE112023004779.0T DE112023004779T5 (de) 2022-11-14 2023-10-10 Durchführungstülle
US18/935,404 US20250062056A1 (en) 2022-11-14 2024-11-01 Grommet

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2022181555A JP7633982B2 (ja) 2022-11-14 2022-11-14 グロメット
JP2022-181555 2022-11-14

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US18/935,404 Continuation US20250062056A1 (en) 2022-11-14 2024-11-01 Grommet

Publications (1)

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WO2024106062A1 true WO2024106062A1 (ja) 2024-05-23

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PCT/JP2023/036660 Ceased WO2024106062A1 (ja) 2022-11-14 2023-10-10 グロメット

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US (1) US20250062056A1 (cg-RX-API-DMAC7.html)
JP (1) JP7633982B2 (cg-RX-API-DMAC7.html)
CN (1) CN119234365A (cg-RX-API-DMAC7.html)
DE (1) DE112023004779T5 (cg-RX-API-DMAC7.html)
WO (1) WO2024106062A1 (cg-RX-API-DMAC7.html)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20240280123A1 (en) * 2023-02-16 2024-08-22 Illinois Tool Works Inc. Compressing Snap Grommet

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0246186U (cg-RX-API-DMAC7.html) * 1988-09-26 1990-03-29
JP2007166732A (ja) * 2005-12-12 2007-06-28 Daiwa Kasei Ind Co Ltd グロメット
JP2011259643A (ja) * 2010-06-10 2011-12-22 Sumitomo Wiring Syst Ltd ワイヤハーネス用のグロメット
JP2021125911A (ja) * 2020-02-03 2021-08-30 矢崎総業株式会社 グロメット、及び、ワイヤハーネス

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0246186U (cg-RX-API-DMAC7.html) * 1988-09-26 1990-03-29
JP2007166732A (ja) * 2005-12-12 2007-06-28 Daiwa Kasei Ind Co Ltd グロメット
JP2011259643A (ja) * 2010-06-10 2011-12-22 Sumitomo Wiring Syst Ltd ワイヤハーネス用のグロメット
JP2021125911A (ja) * 2020-02-03 2021-08-30 矢崎総業株式会社 グロメット、及び、ワイヤハーネス

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DE112023004779T5 (de) 2025-11-13
JP7633982B2 (ja) 2025-02-20
CN119234365A (zh) 2024-12-31
JP2024070926A (ja) 2024-05-24
US20250062056A1 (en) 2025-02-20

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