EP2751880B1 - Waterproof connector - Google Patents

Waterproof connector Download PDF

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Publication number
EP2751880B1
EP2751880B1 EP12759270.7A EP12759270A EP2751880B1 EP 2751880 B1 EP2751880 B1 EP 2751880B1 EP 12759270 A EP12759270 A EP 12759270A EP 2751880 B1 EP2751880 B1 EP 2751880B1
Authority
EP
European Patent Office
Prior art keywords
engagement
housing
mat seal
seal holder
holder
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.)
Active
Application number
EP12759270.7A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2751880A1 (en
Inventor
Etsurou Suzuki
Yasuharu Kondo
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
Publication of EP2751880A1 publication Critical patent/EP2751880A1/en
Application granted granted Critical
Publication of EP2751880B1 publication Critical patent/EP2751880B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • H01R13/5205—Sealing means between cable and housing, e.g. grommet
    • H01R13/5208—Sealing means between cable and housing, e.g. grommet having at least two cable receiving openings
    • 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
    • H01R13/502—Bases; Cases composed of different pieces
    • H01R13/506—Bases; Cases composed of different pieces assembled by snap action of the parts

Definitions

  • the present invention relates to a waterproof connector.
  • Patent Literature 1 discloses one of prior art waterproof connectors.
  • the waterproof connector disclosed in the PLT 1 includes a housing, a mat seal, and a terminal holder (mat seal holder). An opening is formed on the housing, and terminals connected with electric wires are housed in the housing. The wires are inserted through the mat seal, and the mat seal is installed into the opening of the housing to seal the housing. The wires are also inserted through the terminal holder, and the terminal holder is fixed at the opening of the housing by an engagement structure (retaining pawls and retaining holes) to prevent the terminal holder from dropping off from the housing.
  • JP 2008 004471 A discloses a waterproof connector which comprises an insulation housing having lock parts locking a holder, and a holder having lock object parts engageable with the lock parts at a predetermined lock position.
  • the shape of the waterproof plug and the lock position are set such that, in a state where the holder is withdrawn from the lock position in a direction separating from the waterproof plug, a circumferential wall of the holder is separated from a housing wall and a space is formed throughout the whole circumference between the waterproof plug and the circumferential wall, even in a state where wires are inserted into wire insertion holes.
  • US 2001/0016457 A1 teaches a connector with a holder prevented from coming-off, wherein the connector includes a connector housing, a holder mounted on a surface of the connector housing, a spacer inserted into the middle of the connector housing from a direction crossing at right angles with the mounting direction of the holder, a locking member protrudingly formed to the holder, a locking part for locking formed to the locking member, and an engaging part for engaging with the locking part formed to the spacer, wherein the engaging part engages with the locking part when the holder is completely mounted.
  • the engagement between the retaining pawls and the retaining holes may loosen. If an external force applies to the connector via the wires, the looseness may cause disengagement of the terminal holder from the housing. In this case, the mat seal cannot be held tightly in the housing, so that sealing may become insufficient.
  • An object of the present invention provides a waterproof connector that can improve retention of a mat seal in a housing.
  • An aspect of the present invention provides a waterproof connector of claim 1 that includes a housing on which an opening is formed, and in which terminals connected with electric wires are housed; a mat seal which is installed into the opening of the housing, and through which the wires are inserted; a mat seal holder which is engaged with the opening of the housing by an engagement structure to prevent the mat seal from dropping off from the housing, and through which the wires are inserted; and an engagement strengthening portion which is provided on one of the housing and the mat seal holder and configured to strengthen an engagement of the engagement structure.
  • the engagement strengthening portion is provided on the one of the housing and the mat seal holder, so that looseness of the engagement structure is prevented and thereby undesirable disengagement of the engagement structure due to an external force can be prevented. Therefore, undesirable disengagement of the mat seal holder from the housing is prevented and thereby retention of the mat seal in the housing can be improved.
  • the engagement structure includes a first engagement portion provided on the mat seal holder and a second engagement portion provided on the housing, the first engagement portion has a first surface that faces an opposite direction to an engagement direction of the mat seal holder with the housing, the second engagement portion has a second surface that faces an opposite direction to a disengagement direction of the mat seal holder from the housing.
  • the engagement strengthening portion is formed as a biasing portion that biases another of the housing and the mat seal holder so as to bias the mat seal holder toward the disengagement direction of the mat seal holder from the housing.
  • the engagement strengthening portion is formed as the biasing portion that biases the other of the housing and the mat seal holder so as to bias the mat seal holder toward the disengagement direction, so that the engagement between the first and second surfaces (the first and second engagement portions) can be steadily engaged. Therefore, the looseness of the engagement structure is further prevented and thereby the retention of the mat seal in the housing can be improved effectively.
  • the biasing portion is provided on the mat seal holder as a protrusion protruded toward the engagement direction.
  • the engagement of the engagement structure can be strengthen by a simple structure without extensive design changes in the mat seal holder.
  • the waterproof connector 1 includes a housing 5, a mat seal 7, and a mat seal holder 11.
  • An opening 3 is formed on the housing 5, and terminals (not visible in Fig. 1 ) connected with electric wires (not shown in the drawings) are housed in the housing 5.
  • the wires are inserted through the mat seal 7, and the mat seal 7 is installed into the opening 3 of the housing 5 to seal the housing 5.
  • the wires are also inserted through the mat seal holder 11, and the mat seal holder 11 is fixed at the opening 3 of the housing 5 by a pair of engagement structures 9 (see Fig. 10(c) ) in order to prevent the mat seal 7 from dropping off from the housing 5.
  • the pair of engagement structures 9 is provided on the housing 5 and the mat seal holder 11.
  • Each of the engagement structures 9 includes a first engagement portion (engagement pawl) 19 provided on the mat seal holder 11 and a second engagement portion (engagement tab) 21 provided on the housing 5. Note that only one of the pair is visible in Fig. 10(c) .
  • engagement strengthening portions 13 biasing portions [protrusions] 23 are provided on the mat seal holder 11 to strengthening the engagement of the engagement structures 9.
  • each of the engagement structures 9 includes the engagement pawl 19 on the mat seal holder 11 and the engagement tab 21 on the housing 5.
  • the engagement pawl 19 on the mat seal holder 11 includes a first surface 15 that faces an opposite direction (see an arrow in Fig. 8 ) to an engagement direction of the mat seal holder 11 with the housing 5.
  • the engagement tab 21 on the housing 5 includes a second surface 17 that faces an opposite direction to a disengagement direction (see an arrow in Fig. 8 ) of the mat seal holder 11 from the housing 5 (i.e. the engagement direction and the disengagement direction face opposite directions to each other).
  • each of the engagement strengthening portions 13 is formed as the biasing portion (biasing protrusion) 23.
  • the biasing protrusion 23 on the mat seal holder 11 is a protrusion protruded toward the engagement direction of the mat seal holder 11 with the housing 5. Therefore, when the housing 5 and the mat seal holder 11 are engaged with each other, the biasing protrusion 23 biases the mat seal holder 11 toward the disengagement direction (see an arrow in Fig. 7 ) of the mat seal holder 11 from the housing 5.
  • the engagement strengthening portions 13 biasing protrusions 23
  • the housing 5 is formed to have a box-like shape, and includes a connection end 25 and terminal cavities 27.
  • the connection end 25 is opened at one end of the housing 5, and another connector (not shown) is to be connected to the connection end 25.
  • the above-explained opening 3 is opened another end of the housing 5.
  • a lever 29 (see Fig. 1 ) is rotatably attached to support pivots 31 on the housing 5. The lever 29 is used for supporting connection of the other connector to the connection end 25.
  • the terminals are installed into the housing 5 through the opening 3.
  • the installed terminals are held in the terminal cavities 27, respectively.
  • the terminal cavities 27 are aligned along a width direction of the housing 5, and arranged in two rows in a height direction of the housing 5.
  • terminals in the other connector are electrically connected with the terminals in the terminal cavities 27, respectively.
  • the mat seal 7 is installed into the opening 3 of the housing 5 in order to seal off the housing 5.
  • the mat seal 7 shown in Fig. 3 is made of elastic material such as rubber, and its outer circumferential outline is formed to have an outline similar to an inner circumferential shape of the opening 3 of the housing 5.
  • sealing holes 33 are formed on the mat seal 7, and the wires are inserted through the sealing holes 33, respectively.
  • the number of the sealing holes 33 is equal to that of the terminal cavities 27 of the housing 5.
  • the outer circumferential outline of the mat seal 7 is made larger than the inner circumferential shape of the opening 3 of the housing 5. Therefore, when the mat seal 7 is inserted into the opening 3 (see Figs. 10(a) and 10(b) ), its outer circumferential outline is fit tightly to the inner circumference of the opening 3 to seal the housing 5. The mat seal 7 is prevented from dropping off from the housing 5 by the mat seal holder 11.
  • the mat seal holder 11 shown in Fig. 4 is attached to the housing 5 so as to close the opening 3 (see Fig. 10(c) ).
  • insertion holes 35 are formed on the mat seal holder 11, and the wires are also inserted through the insertion holes 35, respectively.
  • the number of the insertion holes 35 is equal to that of the terminal cavities 27 of the housing 5 or the sealing holes 33 on the mat seal 7.
  • the mat seal holder 11 is fixed with the housing 5 by the pair of engagement structures 9.
  • the engagement structures 9 are provided on both sides of the housing 5 and the mat seal holder 11, and each of the engagement structures 9 is configured of the engagement pawl 19 and the engagement tab 21 (see Fig 10(c) ).
  • the engagement pawl 19 is formed as a barbed tab and can be bent elastically outward along a width direction of the housing 5 and the mat seal holder 11 (see Figs. 4 and 5(a) ).
  • the engagement pawl 19 has the above-explained first surface 15 as an engagement surface. The first surface 15 is engaged with the second surface 17 of the engagement tab 21 (see Fig. 8 ).
  • the engagement tab 21 has a recess opened outward along the width direction (see Figs. 2 and 5(b) ).
  • the engagement tab 21 has the above-explained second surface 17 as another engagement surface.
  • the second surface 17 is a surface of one of sidewalls of the recess.
  • the second surface 17 is engaged with the first surface 15 of the engagement pawl 19 (see Fig. 8 ). When the first and second surfaces 15 and 17 are engaged with each other, the mat seal holder 11 can be prevented from dropping off from the housing 5.
  • the engagement pawl(s) 19 bends outward and runs over an end of the engagement tab(s) 21.
  • the engagement pawl(s) 19 bends back due to its elastic restoring force.
  • the first and second surfaces 15 and 17 are engaged with each other, and thereby a movement of the mat seal holder 11 relative to the housing 5 is restricted.
  • This engagement between the engagement pawl(s) 19 and the engagement tab(s) 21 is strengthened by the engagement strengthening portions 13.
  • each of the engagement strengthening portions 13 is formed as the biasing protrusion 23 provided on the mat seal holder 11, and protruded toward the housing 5 from an end surface of the mat seal holder 11.
  • the biasing protrusion 23 is protruded toward an annular end surface around the opening 3 of the housing 5 (an opposite surface to the mat seal holder 11).
  • each protruded length of the biasing protrusions 23 is set to a length that does not impede the engagement between the engagement pawls 19 and the engagement tabs 21 (between the first and second surfaces 15 and 17). In other words, each protruded length of the biasing protrusions 23 is set to a length that does not preclude the engagement between the engagement pawls 19 and the engagement tabs 21 (between the first and second surfaces 15 and 17).
  • Eight of the biasing protrusions 23 (engagement strengthening portions 13) are provided in total. As shown in Figs. 10(c) and 4 , four of the biasing protrusions 23 are aligned along the width direction on an upper portion of the mat seal holder 11. And remaining four of the biasing protrusions 23 are aligned along the width direction on a lower portion of the mat seal holder 11 (two of them are not visible in Fig. 10(c) ).
  • a biasing force applies to the mat seal holder 11 toward a direction (see the arrow in Fig. 7 ) so as to disengage the mat seal holder 11 from the housing 5. Therefore, the biasing force also applies to the engagement structures 9 (see an arrow in Fig. 8 ), so that the first and second surfaces 15 and 17 are steadily engaged with each other and thereby looseness of the engagement structures 9 can be prevented.
  • the mat seal 7 is installed into the opening 3 of the housing 5 at first.
  • the mat seal 7 is set in the inside of the opening 3 so as to fit its outer circumferential outline tightly to the inner circumference of the opening 3.
  • the opening 3 is closed by the mat seal holder 11 so that the mat seal 7 is held between the housing 5 and the mat seal holder 11.
  • the mat seal holder 11 is steadily engaged with the housing 5 by the engagement structures 9. In this manner, assembling of the waterproof connector 1 is completed.
  • the engagement strengthening portions 13 are provided on the mat seal holder 11 in order to strengthen the engagement of the engagement structures 9, so that the looseness of the engagement structures 9 can be prevented by the engagement strengthening portions 13. Therefore, undesirable disengagement of the engagement structures 9 due to an external force can be prevented.
  • the waterproof connector 1 can prevent the mat seal holder 11 from dropping off from the housing 5, the holding steadiness of the mat seal 7 relative to the housing 5 can be improved.
  • the engagement strengthening portions 13 are formed as the biasing portions [protrusions] 23 that bias the mat seal holder 11 toward the disengagement direction (see the arrows in Figs. 7 and 8 ) of the mat seal holder 11 from the housing 5. Since the biasing portions 23 bias the mat seal holder 11, the engagement of the first surface 15 on the engagement pawl 19 and the second surfaces 17 on the engagement tab 21 is made strengthened. Therefore, the looseness of the engagement structures 9 is prevented and thereby the mat seal holder 11 can be held steadily by the housing 5.
  • biasing portions 23 are formed so as to protrude toward the opposite surface of the housing 5, so that the engagement of the engagement structures 9 can be strengthened by a simple structure without extensive design changes in the mat seal holder 11.
  • engagement strengthening portions 13 are provided on the mat seal holder 11 in the waterproof connector 1 according to the present embodiment, an engagement strengthening portion(s) may be provided on the housing 5.
  • the engagement strengthening portions 13 are formed as the biasing portions 23 that strengthen the engagement of the first and second surfaces 15 and 17 of the engagement structures 9 in the waterproof connector 1 according to the present embodiment.
  • the engagement strengthening portion(s) 13 may take another configuration suitable for a configuration of the engagement structure(s) 9.
  • the engagement structure 9 may also take various configurations.
  • the engagement structure 9 may have a modified configuration in which an additional support portion is provided outside the engagement pawl (first engagement portion) 19 in order to enhancing a bend back force (holding force) of the engagement pawl (first engagement portion) 19.
  • the engagement structure 9 may have another configuration in which the engagement structure is configured of a press-in rod and a press-in hole.
  • the rod and the hole may be provided further with an anti-pullout structure.
  • a circumferential convex rib may be formed on an outer circumferential surface of the rod, and a circumferential concave groove may be formed on an inner circumferential surface of the hole (or, a circumferential barbed rib on an outer circumferential surface of the rod, and a circumferential engagement groove on an inner circumferential surface of the hole).
  • the biasing portion(s) 23 is formed as a protrusion protruded toward the disengagement direction of the housing 5 from the mat seal holder 11 in the waterproof connector 1 according to the present embodiment.
  • the biasing portion may be formed as an elastic member (e.g. a spring) for biasing the mat seal holder 11.

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)
EP12759270.7A 2011-08-30 2012-08-01 Waterproof connector Active EP2751880B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011186878A JP5767909B2 (ja) 2011-08-30 2011-08-30 防水コネクタ
PCT/JP2012/004892 WO2013031088A1 (en) 2011-08-30 2012-08-01 Waterproof connector

Publications (2)

Publication Number Publication Date
EP2751880A1 EP2751880A1 (en) 2014-07-09
EP2751880B1 true EP2751880B1 (en) 2016-11-30

Family

ID=46851557

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12759270.7A Active EP2751880B1 (en) 2011-08-30 2012-08-01 Waterproof connector

Country Status (6)

Country Link
EP (1) EP2751880B1 (ja)
JP (1) JP5767909B2 (ja)
KR (1) KR20140052071A (ja)
CN (1) CN103875132B (ja)
IN (1) IN2014CN02295A (ja)
WO (1) WO2013031088A1 (ja)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2824769A1 (en) 2013-07-12 2015-01-14 Delphi Technologies, Inc. Improved connector assembly with mat seal
EP3057183B1 (de) * 2015-02-12 2019-09-11 Aptiv Technologies Limited Gedichteter Stecker
JP6989472B2 (ja) * 2018-10-16 2022-01-05 矢崎総業株式会社 カバーとブロック部材との係合構造、電子部品モジュール、電気接続箱、及び、ワイヤハーネス

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2537093Y2 (ja) * 1993-05-21 1997-05-28 日本プラスト株式会社 二物品の固着構造
JPH07228167A (ja) 1994-02-17 1995-08-29 Iseki & Co Ltd 農用走行車体
JP3230956B2 (ja) 1995-09-05 2001-11-19 矢崎総業株式会社 防水圧接コネクタ
JP3672229B2 (ja) * 2000-02-23 2005-07-20 矢崎総業株式会社 ホルダ抜け防止コネクタ
JP2003022868A (ja) * 2001-07-06 2003-01-24 Auto Network Gijutsu Kenkyusho:Kk 防水コネクタ
JP2004039584A (ja) * 2002-07-08 2004-02-05 Sumitomo Wiring Syst Ltd 防水コネクタ
JP2007299936A (ja) * 2006-04-28 2007-11-15 Sunx Ltd 電子機器の取付構造
JP2008004471A (ja) * 2006-06-26 2008-01-10 Auto Network Gijutsu Kenkyusho:Kk 防水コネクタ、コネクタアセンブリおよびコネクタアセンブリの製造方法
JP2009043600A (ja) * 2007-08-09 2009-02-26 Yazaki Corp 防水コネクタ用ゴム栓体、および防水コネクタ
JP2010027231A (ja) * 2008-07-15 2010-02-04 Yazaki Corp 防水コネクタ
JP2010140873A (ja) * 2008-12-15 2010-06-24 Yazaki Corp 機器用コネクタの防水構造
JP5463971B2 (ja) 2010-03-10 2014-04-09 日産自動車株式会社 移動体走行経路生成装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
KR20140052071A (ko) 2014-05-02
EP2751880A1 (en) 2014-07-09
CN103875132A (zh) 2014-06-18
IN2014CN02295A (ja) 2015-06-19
JP5767909B2 (ja) 2015-08-26
WO2013031088A1 (en) 2013-03-07
JP2013051042A (ja) 2013-03-14
CN103875132B (zh) 2016-08-31

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