KR101658656B1 - Rubber stopper fixing structure - Google Patents

Rubber stopper fixing structure Download PDF

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Publication number
KR101658656B1
KR101658656B1 KR1020150053014A KR20150053014A KR101658656B1 KR 101658656 B1 KR101658656 B1 KR 101658656B1 KR 1020150053014 A KR1020150053014 A KR 1020150053014A KR 20150053014 A KR20150053014 A KR 20150053014A KR 101658656 B1 KR101658656 B1 KR 101658656B1
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KR
South Korea
Prior art keywords
rubber stopper
electric wire
hole portion
lip
hole
Prior art date
Application number
KR1020150053014A
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Korean (ko)
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KR20150119811A (en
Inventor
요시후미 신미
Original Assignee
야자키 소교 가부시키가이샤
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Publication of KR20150119811A publication Critical patent/KR20150119811A/en
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Publication of KR101658656B1 publication Critical patent/KR101658656B1/en

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    • 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
    • H02G15/00—Cable fittings
    • H02G15/02—Cable terminations
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases

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  • Connector Housings Or Holding Contact Members (AREA)

Abstract

The rubber stopper fixing structure includes a rubber stopper which is assembled in close contact with the outer periphery of the electric wire and the hole portion into which the electric wire is inserted and the rubber stopper is closely attached to the inner circumference of the hole portion and assembled with the outer periphery thereof, Wherein the hole portion includes an inclined portion whose diameter is inclined so as to increase from the inner side toward the outer side, the rubber stopper has a lip portion arranged in close contact with the inner periphery of the hole portion, And a large lip portion formed to have a larger diameter and closely arranged to the inner periphery of the inclined portion, wherein the large lip portion is arranged closer to the inner side than the outer side end face of the inclined portion.

Description

[0001] RUBBER STOPPER FIXING STRUCTURE [0002]

The present invention relates to a rubber stopper fixing structure. Particularly, the present invention relates to a rubber stopper fixing structure including a rubber stopper arranged between a pore portion and an electric wire inserted in the hole portion and closely contacting the hole portion and the electric wire, and the hole portion.

A rubber stopper which is assembled in close contact with the outer periphery of the electric wire and a cavity as a hole portion in which the electric wire is inserted and the rubber stopper is closely attached to the inner periphery of the hole portion and assembled together with the outer periphery thereof, (See, for example, Patent Document 1)

In such a rubber stopper fixing structure, the rubber stopper has a front seal portion that is assembled to the inside of the cavity and a rear seal portion that is disposed behind the front seal portion and is assembled to the outside of the cavity. In the front seal portion, the outer lip and the inner lip are disposed on the same position and on the rear seal portion, and the outer lip and the inner lip are disposed at mutually offset positions in the front and rear directions.

The force received by the outer circumferential lip from the inner circumference of the cavity is not transmitted to the inner circumferential lip due to the provision of the outer circumferential rib and the inner circumferential lip at positions mutually offset in the front and rear direction in this manner on the rear seal portion, The force received by the inner lips from the outer periphery of the electric wire is not transmitted to the outer lips. Therefore, it is possible to suppress an increase in the force for inserting the rubber stopper into the cavity.

Japan 2013-152803

In the rubber stopper fixing structure disclosed in the above-mentioned Patent Document 1, the inner diameter of the hole portion is set to be the same size, and the rubber stopper is closely attached to the inner periphery of the hole portion and is arranged with its outer periphery, And the end portion is exposed to the outside from the end surface of the hole portion.

In each of the hole portions having the same inner diameter as the above, only a small space formed by the outer lip as disclosed in the above-mentioned Patent Document 1 is allowed to allow the deformation of the rubber plug by bending the electric wire. It remains as possible space. In some cases, even such a small space may be substantially lost due to deformation that occurs when the outer circumferential lip is brought into close contact with the inner circumference of the hole portion.

Thus, in each hole portion having an inner diameter of the same size, when the rubber plug is deformed by bending the electric wire, deformation of the rubber plug is allowed between the outer periphery of the rubber plug and the inner periphery of the hole portion, Thereby, there is no space in which the rubber stopper deforms along the longitudinal direction of the electric wire in the hole portion.

Further, in the rubber stopper fixing structure as disclosed in the above-mentioned Patent Document 1, since the end portion of the rubber stopper is exposed to the outside from the end face of the hole portion, the curvature of the electric wire causes the outer circumferential surface There is a fear that the rubber stopper may be broken by interfering with the edge of the hole portion.

When the rubber plug is broken as described above, the rubber plug is bent by the curvature of the electric wire in the rubber plug fixing structure constituted by the hole portion having the inner diameter of the same size as disclosed in the above-mentioned Patent Document 1 Will be deformed along the longitudinal direction of the electrical wire within the hole portion. Therefore, there is a concern that brittleness caused by the rubber stopper is promoted and the waterproofing ability may be reduced.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a rubber stopper fixing structure capable of suppressing reduction in waterproof ability.

According to one aspect of the present invention, there is provided a rubber stopper fixing structure, comprising: a rubber stopper closely assembled to an outer periphery of an electric wire; And the hole portion into which the electric wire is inserted and the rubber stopper is closely attached to the inner circumference of the hole portion and is assembled together with the outer circumference of the hole portion, wherein the hole portion has a diameter of from the inner side toward the outer side Wherein the rubber stopper is formed to have a lip portion which is arranged in close contact with the inner periphery of the hole portion and a diameter larger than the outer diameter of the lip portion and which is arranged in close contact with the inner circumference of the slope portion And the large lip portion is arranged closer to the inner side of the inclined portion than the outer side end surface of the inclined portion.

In the rubber stopper fixing structure according to one embodiment of the present invention, the inner side corner portion of the inclined portion may be chamfered.

1 is a perspective view of an electric wire, a rubber stopper, and a terminal of a rubber stopper fixing structure according to an embodiment of the present invention when they are assembled together.
2 is a perspective view of a housing having a hole portion of a rubber stopper fixing structure according to an embodiment of the present invention.
3 is a perspective view of a rubber stopper of a rubber stopper fixing structure according to an embodiment of the present invention.
4 is a cross-sectional view of a rubber stopper fixing structure according to an embodiment of the present invention.

A rubber stopper fixing structure according to one embodiment of the present invention will be described with reference to Figs.

1 to 4, the rubber stopper fixing structure 1 according to the present embodiment is characterized in that a rubber stopper 5 and an electric wire 3 which are closely fitted to the outer periphery of the electric wire 3 are inserted And a hole portion 7 in which the rubber stopper 5 comes into close contact with the inner periphery of the hole portion and is assembled together with the outer periphery thereof.

The hole portion 7 is disposed in the terminal accommodating chamber 23 of the housing 21 to allow the insertion of the terminal portion of the electric wire 3 and the rubber stopper 5 and the terminal 19 are connected to the electric wire 3, To be electrically connected to the terminal portion of the terminal.

The hole portion 7 includes an inclined portion 9 inclined so that the inner diameter of the hole portion 7 increases from the inner side (the terminal 19 side) to the outer side (the electric wire 3 side). The rubber stopper 5 is formed so as to have a diameter larger than the outer diameter of the lip portion 11 and the lip portion 11 arranged in close contact with the inner circumference of the hole portion 7 and to be in close contact with the inner circumference of the slope portion 9 And a large lip portion (13) arranged to be arranged. The large lip portion 13 is arranged closer to the inner side than the outer side end face 15 of the inclined portion 9 in a state in which the rubber stopper 5 is inserted into the hole portion 7 and assembled.

When the rubber stopper fixing structure 1 is shown in a section along the direction in which the electric wire is inserted, the slope portion 9 is inclined with respect to the direction in which the electric wire is inserted as shown in Fig.

The inner side corner portion 17 of the inclined portion 9 is chamfered.

4, the inner side (the terminal 19 side) of the hole portion 7 is connected to the terminal portion of the electric wire 3 and the rubber stopper 5 in the direction of insertion into the hole portion 7 In Fig. 4) of the electric wire 3 and the rubber stopper 5 are pulled out from the hole portion 7, the outer side of the hole portion 7 (on the electric wire 3 side) .

The electric wire 3 is constituted by a coating wire whose outer periphery of a conductor made of a conductive material is coated with an insulating coating made of an insulating material and electrically connected to a power source, electric power equipment, and the like. The insulating coating on the terminal portion of the electric wire 3 is stripped to a predetermined length and the terminal 19 is electrically connected to the exposed conductor.

The terminal 19 is made of a conductive material and has a contact point portion including a crimp portion which is clamped by swaging the conductor of the electric wire 3 on one end side and is included on the other end side, And a female terminal including a shape connecting portion. In addition, the crimp portion of the terminal 19 includes a rubber stopper for swaging the rubber stopper 5.

The terminal 19 is inserted into the terminal accommodating chamber 23 of the housing 21 and is arranged so as to be able to be bent in the terminal accommodating chamber 23 after the crimping portion is clamped onto the conductor of the terminal portion of the electric wire 3 A locking lance (not shown) engages the terminal 19 to prevent the terminal 19 from falling out of the housing 21.

The housing 21 is made of an insulating material such as a synthetic resin and is formed in a case body shape and has a mating terminal constituted by a male terminal accommodating a tab- (Not shown) that includes a housing (not shown).

A plurality of terminal accommodating chambers (23) are formed in the housing (21). The housing 21 is fitted into a mating housing in a state of receiving the terminals 19 in each terminal accommodating chamber 23 so that the terminals 19 and the mating terminals are electrically connected together.

The terminal accommodating chambers 23 are arranged in a plurality of lines in the width direction of the housing 21 and arranged in two rows in the height direction of the housing 21. [ The terminals 19 are connected to the leads 19 which are received coincident with the holes (not shown) arranged on the side opposite to the hole portion 7, Is inserted into each of the terminal accommodating chambers 23 through a hole on the side of the hole portion 7 functioning as an outward portion. The hole portion (7) in the terminal accommodating chamber (23) includes an inclined portion (9).

The inclined portion 9 is inclined so that the inner diameter of the hole portion 7 increases from the inner side of the hole portion 7 toward the outer side (from the terminal 19 side toward the electric wire 3 side) . The corner portion 17 (the boundary portion between the inclined portion 9 and the hole portion 7) on the inner side (on the terminal 19 side) of the inclined portion 9 is chamfered by R (round) processing or the like chamfered).

Since the edge contact portion of the corner portion 17 with the outer circumferential surface of the rubber stopper 5 is removed by chamfering the inner side corner portion 17 of the slope portion 9 in this manner, Is not damaged. Therefore, occurrence of crumbling on the outer peripheral surface of the rubber stopper (5) can be suppressed.

The outer circumferential surface of the rubber stopper 5 assembled in close contact with the outer circumferential surface of the electric wire 3 is arranged in close contact with the inner circumferential surface of the hole portion 7 of the terminal accommodating chamber 23, So that the inside of the housing 21 is waterproofed.

The rubber stoppers 5 are arranged such that the terminals 19 are connected to the terminal portions of the electric wire 3 and include the plurality of lip portions 11 and the large lip portions 13 on the outer periphery thereof, And is assembled with its inner peripheral surface. The rubber stopper 5 further includes a fixing portion 25 fixed to the rubber stopper fixing portion of the terminal 19 by swaging at a portion closer to the terminal 19 side than the plurality of lip portions 11 do.

The plurality of lip portions 11 are arranged in the circumferential direction of the rubber stopper 5 at predetermined intervals in the longitudinal direction of the electric wire 3 between the fixed portion 25 and the large lip portion 13 of the rubber stopper 5 (Here, two lines) in the longitudinal direction of the electric wire 3 so as to constitute a projection formed in succession to the electric wire 3.

The outer diameter of each of the plurality of lip portions 11 is set to be slightly larger than the inner diameter of the hole portion 7 in the terminal accommodating chamber 23. [ Therefore, when the rubber stopper 5 is inserted into the hole portion 7 and held in the terminal accommodating chamber 23 when the terminal 19 is arranged in the terminal accommodating chamber 23, the outer peripheral surface of the lip portion 11 Are arranged in close contact with the inner peripheral surface of the hole portion (7).

The large lip portion 13 is arranged so as to be closer to the outer side (the electric wire 3 side) than the plurality of lip portions 11 and to form the ridge portion formed continuously in the circumferential direction of the rubber stopper 5 3 in the longitudinal direction. The outer diameter of the large lip portion 13 is set to be larger than the outer diameter of each of the plurality of lip portions 11 and the outer side (the electric wire 3 side) end face 15 of the inclined portion 9 Is smaller than the inner diameter of the hole formed in the outer circumferential surface.

When the rubber stopper 5 is inserted into the inclined portion 9 of the hole portion 7 and the terminal 19 is arranged in the terminal accommodating chamber 23 in the thus configured large lip portion 13, The outer peripheral surface of the large lip portion 13 is arranged in close contact with the inner peripheral surface of the inclined portion 9. [

In this case, since the outer diameter of the large lip portion 13 is set to be smaller than the inner diameter of the hole on the end face 15 side of the inclined portion 9, the large lip portion 13 is formed on the outer side of the inclined portion 9 (On the side of the terminal 19) than the end face 15 on the side (on the side of the electric wire 3).

It is possible to form one space C between the outer peripheral surface of the portion between the plurality of lip portions 11 of the rubber stopper 5 and the large lip portion 13 and the inner peripheral surface of the inclined portion 9 . In addition, it becomes possible to form another space C between the outer peripheral surface on the end face 15 side of the large lip portion 13 of the rubber stopper 5 and the inner peripheral surface of the inclined portion 9.

These spaces C and C function as a runoff portion of the deformed portion of the rubber plug 5 which is deformed by bending the electric wire 3, Construct space. Due to the presence of these spaces C and C, the rubber stopper 5 can be deformed in the X and Y directions indicated by the arrows in Fig. 4 by the curvature of the electric wire 3, The deformation of the rubber stopper 5 in the longitudinal direction of the tire is suppressed.

Therefore, even when a small breakage occurs on the outer peripheral surface of the rubber stopper 5 due to the long-term use of the rubber stopper 5, the electric wire 3 The deformation of the rubber stopper 5 in the longitudinal direction is suppressed by the spaces C and C and therefore the expansion of the breakage can be suppressed by the curvature of the electric wire 3, And water resistance can be maintained.

Since the rubber stopper 5 is bent in the X and Y directions by the curvature of the electric wire 3 because the large lip portion 13 is arranged closer to the inner side than the outer side end face 15 of the slope portion 9, The outer peripheral surface of the large lip portion 13 does not come into contact with the edge of the hole on the side surface 15 side of the inclined portion 9, even when deformed to the Y-tangle.

That is, even when the rubber stopper 5 is deformed by the curvature of the electric wire 3, the rubber stopper 5 does not interfere with the edge of the hole on the end face 15 side of the inclined portion 9, And no breakage due to interference between the edge and the rubber stopper 5 occurs.

Since the large lip portion 13 disposed on the rubber stopper 5 is closely arranged on the inner periphery of the inclined portion 9 formed on the hole portion 7 in the rubber stopper fixing structure 1 thus configured, The spaces C and C that allow deformation of the rubber plug 5 due to the curvature of the electric wire 3 between the outer periphery of the rubber plug 5 and the inner periphery of the inclined portion 9, C) can be formed.

Therefore, when the electric wire 3 is curved, deformation of the rubber stopper 5 is permitted due to the presence of the spaces C and C formed between the outer periphery of the rubber stopper 5 and the inner periphery of the slope portion 9 And deformation of the rubber stopper 5 along the longitudinal direction of the electric wire 3 in the hole portion 7 can be suppressed.

Further, since the large lip portion 13 is arranged closer to the inner side than the outer side end face 15 of the slope portion 9, the large lip portion 13 is in contact with the curvature of the electric wire 3 It is possible to prevent the occurrence of crumbling in the large lip portion 13 without interfering with the corner portion on the side of the end face 15 of the inclined portion 9.

It is possible to form the spaces C and C allowing the deformation of the rubber stopper 5 by the inclined portion 9 and the large lip portion 13 in the thus configured rubber stopper fixing structure 1 , It is possible to prevent the rubber stopper from being broken by the interference between the rubber stopper and the edge of the hole portion, and it is possible to suppress the waterproofing weakening.

The inner side corner portion 17 of the inclined portion 9 and the outer periphery of the rubber stopper 5 located at the corner portion 17 It is possible to suppress the occurrence of breakage in a part of the rubber stopper 5 located at the inner corner portion 17 of the inclined portion 9.

Further, in the rubber stopper fixing structure 1 according to the present invention, although the hole portion functions as an electric wire lead-out portion constituting the terminal accommodating chamber of the housing, the present invention is not limited to this, It is possible to apply the constitution of the present invention to any configuration in which the rubber stopper is arranged close to the hole portion and the electric wire inserted into the hole portion.

Further, although the large lip portion is disposed on one line in the longitudinal direction of the electric wire, the present invention is not limited thereto. For example, a diameter larger than the outer diameter of the lip portion and an outer diameter of the large lip portion A plurality of large lip portions may be arranged such that another large lip portion of small diameter is disposed between the lip portion and the large lip portion. Further, the lip portion is not limited to two lines but may be arranged in two or more lines or two or less lines (s).

Although the embodiments of the present invention have been described above, these embodiments are merely described for the purpose of assisting the understanding of the present invention, and the present invention is not limited to these embodiments. The technical scope of the present invention is not limited to the specific technical matters disclosed in the embodiments but includes various modifications, alterations, and alternative techniques which can be easily understood from the description.

The present invention is based on Japanese Patent Application No. 2014-084512, which is hereby incorporated by reference in its entirety.

According to the embodiment of the present invention, a beneficial effect is possible which can provide a rubber stopper fixing structure capable of suppressing the waterproof weakening.

1: Rubber stopper fixing structure 3: Electric wire
5: rubber stopper 7: hole portion
9: slope part 11: lip part
13: large lip portion 15: end face
17:

Claims (2)

A rubber stopper which is closely attached to the outer periphery of the electric wire; And
The hole portion in which the electric wire is inserted and the rubber stopper is closely attached to the inner periphery of the hole portion and assembled together with the outer periphery of the rubber stopper;
/ RTI >
Wherein the hole portion includes an inclined portion that is inclined so that the diameter of the hole portion is increased from the inner side of the hole portion toward the outer side of the hole portion,
The rubber stopper comprises:
A lip portion closely arranged on the inner periphery of the hole portion, and
A large lip portion formed to have a larger diameter than the outer diameter of the lip portion and closely arranged to the inner periphery of the inclined portion,
/ RTI >
Wherein the large lip portion is arranged closer to the inner side of the inclined portion than the outer side end surface of the inclined portion. The rubber stopper fixing structure according to claim 1, wherein the inner side corner of the inclined portion is chamfered.
KR1020150053014A 2014-04-16 2015-04-15 Rubber stopper fixing structure KR101658656B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014084512A JP2015204260A (en) 2014-04-16 2014-04-16 Rubber plug fixing structure
JPJP-P-2014-084512 2014-04-16

Publications (2)

Publication Number Publication Date
KR20150119811A KR20150119811A (en) 2015-10-26
KR101658656B1 true KR101658656B1 (en) 2016-09-22

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KR1020150053014A KR101658656B1 (en) 2014-04-16 2015-04-15 Rubber stopper fixing structure

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JP (1) JP2015204260A (en)
KR (1) KR101658656B1 (en)
CN (1) CN105024217A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6736870B2 (en) * 2015-11-26 2020-08-05 住友電装株式会社 Conductive path
JP6548036B2 (en) * 2016-01-29 2019-07-24 住友電装株式会社 connector
JP6563160B1 (en) * 2018-12-26 2019-08-21 三菱電機株式会社 Busbar connection device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005093194A (en) 2003-09-17 2005-04-07 Yazaki Corp Waterproof plug for waterproof connector
JP2013008454A (en) 2011-06-22 2013-01-10 Sumitomo Wiring Syst Ltd Rubber plug

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63106080U (en) * 1986-12-27 1988-07-08
JP3010411B2 (en) * 1994-03-18 2000-02-21 矢崎総業株式会社 Waterproof rubber stopper and waterproof connector
US5667406A (en) * 1994-07-27 1997-09-16 Sumitomo Wiring Systems, Ltd. Waterproof seal for connector and method for forming same
JPH08180928A (en) * 1994-10-24 1996-07-12 Yazaki Corp Waterproof connector
JP3825238B2 (en) * 2000-09-04 2006-09-27 矢崎総業株式会社 Waterproof connector
JP2010140847A (en) * 2008-12-15 2010-06-24 Sumitomo Wiring Syst Ltd Waterproof connector
JP5751180B2 (en) 2012-01-24 2015-07-22 住友電装株式会社 Rubber stopper
JP2013165019A (en) * 2012-02-13 2013-08-22 Sumitomo Wiring Syst Ltd Connector
JP2014031060A (en) * 2012-08-02 2014-02-20 Auto Network Gijutsu Kenkyusho:Kk Wire harness

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005093194A (en) 2003-09-17 2005-04-07 Yazaki Corp Waterproof plug for waterproof connector
JP2013008454A (en) 2011-06-22 2013-01-10 Sumitomo Wiring Syst Ltd Rubber plug

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CN105024217A (en) 2015-11-04
JP2015204260A (en) 2015-11-16
KR20150119811A (en) 2015-10-26

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