JP2017229189A - Grommet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a grommet that is able to improve waterproofness and able to improve workability in mounting.SOLUTION: A sealing member 13 comprises: a basal part 15 integrally provided with a support member 9; and a swing part 19 provided so as to be swingable via a swing fulcrum 17 in the direction of insertion of the support member 9 with respect to the basal part 15 and a hole part 5. A sealing part 11 has: a first lip part 21 disposed at one end of the swing part 19 and in close contact with the other face side of the hole part 5; and a second lip part 23 provided at the other end of the swing part 19 and in close contact with the other face side of the hole part 5. When the support member 9 is inserted into the hole part 5, the first lip part 21 comes into contact with the other face side of the hole part 5, consequently swings the swing part 19, and brings the second lip part 23 into contact with the other face side of the hole part 5.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a grommet.

  Conventionally, as a grommet, a seal having a support member having a locking portion that is locked to one surface side of the hole portion of the mounting member, and a seal portion that is provided integrally with the support member and closely contacts the other surface side of the hole portion. The thing provided with the member is known (for example, refer patent document 1).

  In this grommet, the seal portion of the seal member has an outer seal lip and an inner seal lip so as to be double inside and outside with respect to the hole.

  In such a grommet, by inserting the support member into the hole of the mounting member, the locking portion of the support member is locked to one surface side of the hole, and the outer seal lip and the inner seal lip of the seal member are the holes. It is closely attached to the other side of the part.

  By attaching the grommet to the hole of the mounting member in this manner, water and the like can be prevented from entering from the hole of the mounting member into the mounting member, and the sealing portion has two sealing lips, thereby improving waterproofness. Has been.

Japanese Patent Laying-Open No. 2015-33185

  By the way, in a grommet like the above-mentioned patent documents 1, when attaching a support member to a hole of an attachment member, in addition to the force which locks a locking part to a hole, two lip parts are opened and a hole is opened. A force is required to adhere to the other side of the part.

  For this reason, the grommet having two lip portions as in Patent Document 1 requires a larger insertion force with respect to the hole portion of the mounting member than the grommet having one lip portion. Installation workability has been reduced, such as incomplete locking of the parts.

  Therefore, an object of the present invention is to provide a grommet that can improve waterproofness and can improve attachment workability.

  The invention according to claim 1 is a support member having a locking portion that is locked to one surface side of the hole portion of the mounting member, and a seal portion that is provided integrally with the support member and is in close contact with the other surface side of the hole portion. A sealing member having a base portion provided integrally with the support member, and a swinging fulcrum in the insertion direction of the support member with respect to the base portion and the hole portion. A swing portion provided so as to be swingable, and the seal portion is provided at one end of the swing portion and is closely attached to the other surface side of the hole portion; A second lip portion provided at the other end and in close contact with the other surface side of the hole portion, and either one of the first lip portion and the second lip portion includes the support member as the hole portion. And when it is inserted into the hole, it makes contact with the other surface side of the hole to swing the swinging part, and the other is Characterized in that is brought into contact with the other side.

  In this grommet, the seal portion is provided at one end of the swinging portion and closely contacts the other surface side of the hole portion, and the first lip portion is provided at the other end of the swinging portion and closely contacts the other surface side of the hole portion. Since it has two lip parts, it can waterproof with an attachment member with the 1st lip part and the 2nd lip part, and can improve waterproofness.

  One of the first lip portion and the second lip portion is brought into contact with the other surface side of the hole portion when the support member is inserted into the hole portion, and the swinging portion is swung. Since the abutting portion is brought into contact with the other surface side, the insertion force of the mounting member into the hole portion is reduced to a force for locking the locking portion and a force for bringing one lip portion into close contact with the other surface side of the hole portion. It is possible to improve the mounting workability.

  Therefore, in such a grommet, waterproofness can be improved and attachment workability can be improved.

  Invention of Claim 2 is a grommet of Claim 1, Comprising: Either one of the said 1st lip | rip part and the said 2nd lip | rip part is on the outer-diameter side with respect to the said hole of the said rocking | swiveling part. It is located.

  In this grommet, since either one of the first lip portion and the second lip portion is positioned on the outer diameter side with respect to the hole portion of the swinging portion, the other lip portion is covered by one lip portion. It is possible to prevent the other lip portion from being damaged by an external force or the like and maintain waterproofness.

  Invention of Claim 3 is a grommet of Claim 1 or 2, Comprising: The said 1st lip | rip part and the said 2nd lip | rip part are provided continuously in the circumferential direction with respect to the said hole part. Features.

  In this grommet, since the first lip portion and the second lip portion are continuously provided in the circumferential direction with respect to the hole portion, the first lip portion and the second lip portion are opposed to the other surface side of the hole portion. It sticks like a suction cup and can improve waterproofness.

  In addition, even if one lip part is damaged, the other lip part can maintain waterproofness.

  ADVANTAGE OF THE INVENTION According to this invention, there exists an effect that a grommet which can improve waterproofness and can improve attachment workability | operativity can be provided.

It is a perspective view of a protector to which a grommet concerning an embodiment of the invention was applied. It is a front view of the protector to which the grommet concerning an embodiment of the invention was applied. It is sectional drawing of the grommet which concerns on embodiment of this invention. It is a principal part expanded sectional view of the grommet concerning an embodiment of the invention.

  The grommet which concerns on embodiment of this invention is demonstrated using FIGS. 1-4.

  The grommet 1 according to the present embodiment includes a support member 9 having a locking portion 7 that is locked to one surface side of the hole 5 of the mounting member 3, and a hole 5 that is provided integrally with the support member 9. And a seal member 13 having a seal portion 11 that is in close contact with the surface side.

  The seal member 13 includes a base 15 provided integrally with the support member 9, and a swing provided so as to be swingable via a swing support 17 in the insertion direction of the support member 9 with respect to the base 15 and the hole 5. And a moving part 19.

  Further, the seal portion 11 is provided at one end of the swing portion 19 and is in close contact with the other surface side of the hole portion 5, and the other surface side of the hole portion 5 is provided at the other end of the swing portion 19. And a second lip portion 23 that is in close contact with each other.

  Then, when the support member 9 is inserted into the hole portion 5, the first lip portion 21 abuts on the other surface side of the hole portion 5 to swing the swinging portion 19, and the second lip portion 23 is moved to the hole portion 5. It is made to contact the other surface side.

  Further, the first lip portion 21 is located on the outer diameter side with respect to the hole portion 5 of the swinging portion 19.

  Further, the first lip portion 21 and the second lip portion 23 are provided continuously in the circumferential direction with respect to the hole portion 5.

  Here, as shown in FIGS. 1 and 2, the grommet 1 according to the present embodiment is provided, for example, on a vehicle body (not shown) and a door (not shown) as the attachment member 3 (see FIG. 4). Provided on both ends of the protector 101 that covers the electric wire 103 (see FIG. 3) for connecting the circuits and the like.

  The protector 101 is provided so as to be able to bend according to the opening and closing of the door, covers the outer periphery of the electric wire 103 connecting the vehicle body and the door, and protects the electric wire 103.

  Grommets 1, 1 are integrally provided on both ends of the protector 101, and each grommet 1, 1 is attached to a hole 5 provided in a vehicle body and a door as the attachment member 3, The interior of the car body and doors are waterproofed.

  Hereinafter, the details of the grommet 1 will be described with reference to FIGS.

  As shown in FIGS. 1 to 4, the grommet 1 is attached to a hole 5 of an attachment member 3 such as a vehicle body or a door, and includes a support member 9 and a seal member 13.

  The support member 9 is made of an insulating material such as a synthetic resin, has an outer shape that is elliptical, and is provided integrally with the protector 101 at the end of the protector 101.

  The support member 9 is locked to the mounting member 3 through the locking portion 7 when the electric wire 103 is inserted into the center portion and is inserted into the hole 5 of the mounting member 3.

  The locking part 7 is provided in a circumferential direction of the support member 9 so as to be able to be bent (in this case, four), and a locking claw 25 is projected from the free end side.

  The locking portion 7 is bent by inserting the support member 9 into the hole 5 of the mounting member 3, so that the locking claw 25 comes into contact with the edge of the hole 5 and is bent. It is restored by being completely inserted into the hole 5, and the locking claw 25 is locked to one surface side of the edge of the hole 5.

  Thus, by locking the locking portion 7 to the edge of the hole 5 of the mounting member 3, the support member 9 is locked to the mounting member 3 and the grommet 1 is mounted to the mounting member 3.

  Such a support member 9 is integrally provided with a seal member 13.

  The seal member 13 is made of an elastic material such as synthetic rubber, and is provided integrally with the support member 9 on the protector 101 side of the support member 9, that is, on the outer side of the mounting member 3, and includes a base portion 15, a swing portion 19, a seal Part 11.

  The base portion 15 is formed in an elliptical annular shape and is provided integrally with the support member 9, and the electric wire 103 is inserted through the center portion.

  An oscillating portion 19 is integrally provided on the outer peripheral side of the base portion 15.

  The swinging part 19 is formed in an elliptical shape with one member continuous with the base 15 via the swinging fulcrum 17 with respect to the outer periphery of the base 15, and swings in the insertion direction of the mounting member 3 of the support member 9 in the hole 5. It is provided to be movable.

  Here, the swing fulcrum 17 is formed in a thin shape with a notch 27 provided on the inner diameter side of the base portion 15, and the outer diameter side and the inner diameter side of the swing portion 19 are connected to the mounting member 3 of the support member 9. It can be swung in the insertion direction with respect to the hole 5.

  The swinging portion 19 is positioned in a free state so that the end on the outer diameter side faces the locking claw 25 of the locking portion 7, and the end on the inner diameter side is closer to the protector 101 side than the outer diameter side, that is, It is inclined so as to be located on the outer side of the attachment member 3.

  A seal portion 11 is provided at the end of the swinging portion 19.

  The seal part 11 includes a first lip part 21 and a second lip part 23 which are formed in an elliptical shape with one member continuous to the swing part 19 at both ends of the outer diameter and the inner diameter of the swing part 19. I have.

  The first lip portion 21 is positioned on the outer diameter of the swinging portion 19 and is disposed to face the locking claw 25 of the locking portion 7 in a free state of the swinging portion 19.

  The first lip portion 21 is disposed in close contact with the other surface side of the hole portion 5 in a state where the locking portion 7 is locked to the one surface side of the hole portion 5 of the mounting member 3, The outside is partitioned and the inside of the attachment member 3 is waterproofed.

  Since the first lip portion 21 is continuously provided in the circumferential direction with respect to the hole portion 5 so as to have an elliptical shape, the first lip portion 21 is in close contact with the other surface side of the hole portion 5 like a suction cup, Waterproofness has been improved.

  The second lip portion 23 is located on the inner diameter of the swinging portion 19, is disposed on the outer side of the mounting member 3 with respect to the first lip portion 21 in a free state of the swinging portion 19, and is covered by the first lip portion 21. It is in the state.

  By covering the second lip portion 23 with the first lip portion 21 in this manner, the exposure of the second lip portion 23 can be suppressed and protected in a state before the grommet 1 is attached to the attachment member 3. It is possible to prevent the second lip portion 23 from being damaged by an external force or the like due to interference with the member.

  When the support member 9 is inserted into the hole 5 of the mounting member 3, the second lip portion 23 is configured such that the swinging portion 19 is swung by a contact between the first lip portion 21 and the other surface side of the hole 5. 17 is swung through 17 and is in close contact with the other surface side of the hole 5 to partition the inside and outside of the mounting member 3 to waterproof the inside of the mounting member 3.

  Thus, by waterproofing the inside of the attachment member 3 with the first lip portion 21 and the second lip portion 23, it is possible to doubly waterproof on the outer diameter side of the hole portion 5 of the attachment member 3, and the waterproof property is improved. Can be improved.

  In addition, the grommet is formed by swinging the swinging portion 19 by abutting the first lip portion 21 and the other surface side of the hole portion 5 and bringing the second lip portion 23 into contact with the other surface side of the hole portion 5. When 1 is attached to the attachment member 3, an insertion force that simultaneously expands the first lip portion 21 and the second lip portion 23 is not applied, and the insertion force can be reduced.

  Furthermore, since the second lip portion 23 is continuously provided in the circumferential direction with respect to the hole portion 5 so as to be elliptical like the first lip portion 21, the second lip portion 23 is provided with respect to the other surface side of the hole portion 5. It adheres like a suction cup and is further waterproof.

  To attach the grommet 1 configured as described above to the attachment member 3, the support member 9 is inserted into the hole 5 of the attachment member 3, and the locking portion 7 is bent by the edge of the hole 5.

  At this time, the first lip portion 21 and the other surface side of the hole portion 5 are in contact with each other, and the first lip portion 21 is in close contact with the other surface side of the hole portion 5, while the swinging portion 19 has the swing fulcrum 17. Oscillate through.

  Then, the support member 9 is further inserted into the hole 5 of the mounting member 3, and the locking claw 25 is locked to one surface side of the edge of the hole 5 by the restoration of the locking portion 7, so that the grommet 1 is attached to the mounting member 3. Attached to.

  At this time, the swinging of the swinging part 19 is completed, the second lip part 23 comes into close contact with the other surface side of the hole part 5, and the inside of the attachment member 3 is made up by the first lip part 21 and the second lip part 23. Waterproof.

  In this manner, by changing the timing of close contact of the first lip portion 21 and the second lip portion 23 with the other surface side of the hole portion 5, the insertion force of the grommet 1 with respect to the attachment member 3 can be reduced.

  For this reason, incomplete locking of the locking portion 7 when a large insertion force is required can be prevented, and the workability of mounting the grommet 1 to the mounting member 3 can be improved.

  In such a grommet 1, the seal portion 11 is provided at one end of the swing portion 19 and is in close contact with the other surface side of the hole portion 5, and the hole portion provided at the other end of the swing portion 19. 5 has the second lip portion 23 that is in close contact with the other surface side, and therefore, the mounting member 3 can be waterproofed by the first lip portion 21 and the second lip portion 23, and the waterproof property can be improved. it can.

  Further, the first lip portion 21 abuts on the other surface side of the hole portion 5 when the support member 9 is inserted into the hole portion 5 to swing the swing portion 19, and the second lip portion 23 is moved to the hole portion 5. Since the second member is brought into contact with the other surface, the insertion force of the mounting member 3 into the hole 5 is the force that locks the locking portion 7 and the force that causes the first lip 21 to be in close contact with the other surface of the hole 5. Therefore, the mounting workability can be improved.

  Therefore, in such a grommet 1, waterproofness can be improved and attachment workability | operativity can be improved.

  Moreover, since the 1st lip part 21 is located in the outer diameter side with respect to the hole 5 of the rocking | swiveling part 19, the 2nd lip part 23 can be covered with the 1st lip part 21, and the 2nd by external force etc. It is possible to prevent damage to the lip portion 23 and maintain waterproofness.

  Further, since the first lip portion 21 and the second lip portion 23 are continuously provided in the circumferential direction with respect to the hole portion 5, the first lip portion 21 and the second lip portion 23 are provided in addition to the hole portion 5. It adheres like a suction cup to the surface side, and can improve waterproofness.

  In addition, even if one lip part is damaged, the other lip part can maintain waterproofness.

  In the grommet according to the embodiment of the present invention, the first lip portion located on the outer diameter side of the oscillating portion oscillates the oscillating portion. The second lip portion located at the position may swing the swinging portion so that the first lip portion is in close contact with the other surface side of the hole portion.

DESCRIPTION OF SYMBOLS 1 ... Grommet 3 ... Mounting member 5 ... Hole 7 ... Locking part 9 ... Supporting member 11 ... Sealing part 13 ... Sealing member 15 ... Base 17 ... Swing fulcrum 19 ... Swing part 21 ... 1st lip part 23 ... 1st 2 lip

Claims (3)

A support member having a locking portion locked to one surface side of the hole portion of the mounting member, and a seal member having a seal portion which is provided integrally with the support member and closely contacts the other surface side of the hole portion. Grommet,
The seal member includes a base portion provided integrally with the support member, and a swinging portion provided so as to be swingable via a swing fulcrum in the insertion direction of the support member with respect to the base portion and the hole. And
The seal portion is provided at one end of the swinging portion and is in close contact with the other surface side of the hole portion, and is provided at the other end of the swinging portion and is in close contact with the other surface side of the hole portion. A second lip portion,
Either the first lip portion or the second lip portion abuts against the other surface side of the hole portion when the support member is inserted into the hole portion, thereby swinging the swinging portion. The grommet is characterized in that the other is brought into contact with the other surface side of the hole. The grommet according to claim 1,
Either one of the first lip portion and the second lip portion is located on the outer diameter side of the swinging portion with respect to the hole portion. The grommet according to claim 1 or 2,
The grommet, wherein the first lip portion and the second lip portion are continuously provided in a circumferential direction with respect to the hole portion.

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