EP2751880B1 - Waterproof connector - Google Patents
Waterproof connector Download PDFInfo
- 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
Links
- 238000005728 strengthening Methods 0.000 claims description 23
- 238000007789 sealing Methods 0.000 description 5
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 230000014759 maintenance of location Effects 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 2
- 239000013013 elastic material Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
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.
Description
- The present invention relates to a waterproof connector.
- A Patent Literature 1 (PLT 1) listed below 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. - In the above-explained waterproof connector, the retaining pawls are provided on the terminal holder, and the retaining holes are provided on the housing. The terminal holder is inserted into the housing until the retaining pawls and the retaining holes are engaged with each other. Then, the mat seal is held by being surrounded with a cover plate of the terminal holder and a projected plate and a support projection of the housing. As a result, the housing is sealed by the mat seal.
JP 2008 004471 A
Further,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. - PTL 1:
United States Patent No. 5,836,788 (filed based on a priority of Japanese Patent Application No.H7-228167 H9-73948 - However, in the above-mentioned waterproof connector, 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. - According to the invention, 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.
- Here, it is preferable that 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. According to the invention, 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.
- According to this, 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.
- In addition, it is further preferable that the biasing portion is provided on the mat seal holder as a protrusion protruded toward the engagement direction.
- According to this, the engagement of the engagement structure can be strengthen by a simple structure without extensive design changes in the mat seal holder.
-
- [
fig.1]Fig. 1 is a perspective view of a waterproof connector according to an embodiment. - [
fig.2]Fig. 2 is a perspective view of a housing in the waterproof connector. - [
fig. 3] Fig. 3 is a perspective view of a mat seal in the waterproof connector. - [
fig.4]Fig. 4 is a perspective view of a mat seal holder in the waterproof connector. - [
fig.5]Fig. 5 is an enlarged perspective view showing an engagement structure in the waterproof connector; (a) shows a first engagement portion and (b) shows a second engagement portion. - [
fig.6]Fig. 6 is an enlarged perspective view showing engagement strengthening portions in the waterproof connector. - [
fig.7]Fig. 7 is an enlarged plan view showing an assembled state of the waterproof connector where the housing and the engagement strengthening portions are contacted with each other. - [
fig.8]Fig. 8 is an enlarged cross-sectional view showing the engagement structure in the assembled state. - [
fig.9]Fig. 9 is a plan view of the waterproof connector in the assembled state. - [
fig.10]Fig. 10 is a perspective view for explaining an assembling process of the waterproof connector; (a) shows a state where the mat seal is about to be installed in the housing, (b) shows a state where the mat seal is installed in the housing, and (c) shows a state where the mat seal holder is about to be engaged with the housing. - An embodiment of a
waterproof connector 1 will be explained with reference toFigs. 1 to 10 . - As shown in
Figs. 1 to 4 , thewaterproof connector 1 includes ahousing 5, amat seal 7, and amat seal holder 11. An opening 3 (seeFig. 10(a) ) is formed on thehousing 5, and terminals (not visible inFig. 1 ) connected with electric wires (not shown in the drawings) are housed in thehousing 5. The wires are inserted through themat seal 7, and themat seal 7 is installed into theopening 3 of thehousing 5 to seal thehousing 5. The wires are also inserted through themat seal holder 11, and themat seal holder 11 is fixed at theopening 3 of thehousing 5 by a pair of engagement structures 9 (seeFig. 10(c) ) in order to prevent themat seal 7 from dropping off from thehousing 5. - As shown in
Figs. 10(c) and5 , the pair ofengagement structures 9 is provided on thehousing 5 and themat seal holder 11. Each of theengagement structures 9 includes a first engagement portion (engagement pawl) 19 provided on themat seal holder 11 and a second engagement portion (engagement tab) 21 provided on thehousing 5. Note that only one of the pair is visible inFig. 10(c) . In addition, as shown inFig. 10(c) and6 , engagement strengthening portions 13 (biasing portions [protrusions] 23) are provided on themat seal holder 11 to strengthening the engagement of theengagement structures 9. - As explained above, each of the
engagement structures 9 includes theengagement pawl 19 on themat seal holder 11 and theengagement tab 21 on thehousing 5. As shown inFig. 5(a) , theengagement pawl 19 on themat seal holder 11 includes a first
surface 15 that faces an opposite direction (see an arrow inFig. 8 ) to an engagement direction of themat seal holder 11 with thehousing 5. As shown inFig. 5(b) , theengagement tab 21 on thehousing 5 includes asecond surface 17 that faces an opposite direction to a disengagement direction (see an arrow inFig. 8 ) of themat seal holder 11 from the housing 5 (i.e. the engagement direction and the disengagement direction face opposite directions to each other). - As shown in
Fig. 6 , each of theengagement strengthening portions 13 is formed as the biasing portion (biasing protrusion) 23. Thebiasing protrusion 23 on themat seal holder 11 is a protrusion protruded toward the engagement direction of themat seal holder 11 with thehousing 5. Therefore, when thehousing 5 and themat seal holder 11 are engaged with each other, thebiasing protrusion 23 biases themat seal holder 11 toward the disengagement direction (see an arrow inFig. 7 ) of themat seal holder 11 from thehousing 5. The engagement strengthening portions 13 (biasing protrusions 23) will be explained in detail later. - As shown in
Figs. 2 and10(a) , thehousing 5 is formed to have a box-like shape, and includes aconnection end 25 andterminal cavities 27. Theconnection end 25 is opened at one end of thehousing 5, and another connector (not shown) is to be connected to theconnection end 25. The above-explainedopening 3 is opened another end of thehousing 5. In addition, a lever 29 (seeFig. 1 ) is rotatably attached to support pivots 31 on thehousing 5. Thelever 29 is used for supporting connection of the other connector to theconnection end 25. - The terminals are installed into the
housing 5 through theopening 3. The installed terminals are held in theterminal cavities 27, respectively. - The
terminal cavities 27 are aligned along a width direction of thehousing 5, and arranged in two rows in a height direction of thehousing 5. When the other connector is connected to the connection end 25 of thewaterproof connector 1, terminals in the other connector are electrically connected with the terminals in theterminal cavities 27, respectively. Themat seal 7 is installed into theopening 3 of thehousing 5 in order to seal off thehousing 5. - The
mat seal 7 shown inFig. 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 theopening 3 of thehousing 5. In addition, sealingholes 33 are formed on themat seal 7, and the wires are inserted through the sealing holes 33, respectively. Naturally, the number of the sealing holes 33 is equal to that of theterminal cavities 27 of thehousing 5. The outer circumferential outline of themat seal 7 is made larger than the inner circumferential shape of theopening 3 of thehousing 5.
Therefore, when themat seal 7 is inserted into the opening 3 (seeFigs. 10(a) and 10(b) ), its outer circumferential outline is fit tightly to the inner circumference of theopening 3 to seal thehousing 5. Themat seal 7 is prevented from dropping off from thehousing 5 by themat seal holder 11. - The
mat seal holder 11 shown inFig. 4 is attached to thehousing 5 so as to close the opening 3 (seeFig. 10(c) ). In addition, insertion holes 35 are formed on themat seal holder 11, and the wires are also inserted through the insertion holes 35, respectively. Naturally, the number of the insertion holes 35 is equal to that of theterminal cavities 27 of thehousing 5 or the sealing holes 33 on themat seal 7. Themat seal holder 11 is fixed with thehousing 5 by the pair ofengagement structures 9. - The
engagement structures 9 are provided on both sides of thehousing 5 and themat seal holder 11, and each of theengagement structures 9 is configured of theengagement pawl 19 and the engagement tab 21 (seeFig 10(c) ). Theengagement pawl 19 is formed as a barbed tab and can be bent elastically outward along a width direction of thehousing 5 and the mat seal holder 11 (seeFigs. 4 and5(a) ). In addition, theengagement pawl 19 has the above-explainedfirst surface 15 as an engagement surface. Thefirst surface 15 is engaged with thesecond surface 17 of the engagement tab 21 (seeFig. 8 ). - The
engagement tab 21 has a recess opened outward along the width direction (seeFigs. 2 and5(b) ). In addition, theengagement tab 21 has the above-explainedsecond surface 17 as another engagement surface. Thesecond surface 17 is a surface of one of sidewalls of the recess. Thesecond surface 17 is engaged with thefirst surface 15 of the engagement pawl 19 (seeFig. 8 ). When the first andsecond surfaces mat seal holder 11 can be prevented from dropping off from thehousing 5. - During engaging the
mat seal holder 11 with thehousing 5, the engagement pawl(s) 19 bends outward and runs over an end of the engagement tab(s) 21. When the pawl(s) of the engagement pawl(s) 19 reaches to the recess(es) of the engagement tab(s) 21, the engagement pawl(s) 19 bends back due to its elastic restoring force. As a result, the first andsecond surfaces mat seal holder 11 relative to thehousing 5 is restricted. This engagement between the engagement pawl(s) 19 and the engagement tab(s) 21 (between the first andsecond surfaces 15 and 17) is strengthened by theengagement strengthening portions 13. - As explained above, each of the
engagement strengthening portions 13 is formed as the biasingprotrusion 23 provided on themat seal holder 11, and protruded toward thehousing 5 from an end surface of themat seal holder 11. In other words, the biasingprotrusion 23 is protruded toward an annular end surface around theopening 3 of the housing 5 (an opposite surface to the mat seal holder 11). When themat seal holder 11 is engaged with thehousing 5, the biasingprotrusions 23 contact with the opposite
surface of thehousing 5, so that themat seal holder 11 is biased toward a direction (see an arrow inFig. 7 ) so as to disengage themat seal holder 11 from thehousing 5 due to the biasingprotrusions 23. - Note that 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 andsecond surfaces 15 and 17). In other words, each protruded length of the biasingprotrusions 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 andsecond surfaces 15 and 17). Eight of the biasing protrusions 23 (engagement strengthening portions 13) are provided in total. As shown inFigs. 10(c) and4 , four of the biasingprotrusions 23 are aligned along the width direction on an upper portion of themat seal holder 11. And remaining four of the biasingprotrusions 23 are aligned along the width direction on a lower portion of the mat seal holder 11 (two of them are not visible inFig. 10(c) ). - Due to the contacts of the biasing
protrusions 23 with the opposite surface of thehousing 5 while themat seal holder 11 is engaged with thehousing 5, a biasing force applies to themat seal holder 11 toward a direction (see the arrow inFig. 7 ) so as to disengage themat seal holder 11 from thehousing 5. Therefore, the biasing force also applies to the engagement structures 9 (see an arrow inFig. 8 ), so that the first andsecond surfaces engagement structures 9 can be prevented. - According to the above explained
waterproof connector 1 in which the engagement of theengagement structures 9 is strengthened, even if an external force applies to a harness 37 (a bundle of the wires led out from the mat seal holder 11: seeFig. 9 ) so as to pull themat seal holder 11, the looseness of theengagement structures 9 is prevented and thereby themat seal holder 11 can be prevented from dropping off from thehousing 5. Due to such an anti-looseness structures for theengagement structures 9 by theengagement strengthening portions 13, holding steadiness of themat seal holder 11 by thehousing 5 is made strengthened and thereby steadiness against an external force can be improved. - When assembling the
waterproof connector 1, themat seal 7 is installed into theopening 3 of thehousing 5 at first. Themat seal 7 is set in the inside of theopening 3 so as to fit its outer circumferential outline tightly to the inner circumference of theopening 3. Then, theopening 3 is closed by themat seal holder 11 so that themat seal 7 is held between thehousing 5 and themat seal holder 11. Themat seal holder 11 is steadily engaged with thehousing 5 by theengagement structures 9. In this manner, assembling of thewaterproof connector 1 is completed. - According to the
waterproof connector 1 according to the present embodiment, theengagement strengthening portions 13 are provided on themat seal holder 11 in order to strengthen the engagement of theengagement structures 9, so that the looseness of theengagement structures 9 can be prevented by theengagement strengthening portions 13. Therefore, undesirable disengagement of theengagement structures 9 due to an external force can be prevented. - Since the
waterproof connector 1 can prevent themat seal holder 11 from dropping off from thehousing 5, the holding steadiness of themat seal 7 relative to thehousing 5 can be improved. - In addition, the
engagement strengthening portions 13 are formed as the biasing portions [protrusions] 23 that bias themat seal holder 11 toward the disengagement direction (see the arrows inFigs. 7 and 8 ) of themat seal holder 11 from thehousing 5. Since the biasingportions 23 bias themat seal holder 11, the engagement of thefirst surface 15 on theengagement pawl 19 and the second surfaces 17 on theengagement tab 21 is made strengthened. Therefore, the looseness of theengagement structures 9 is prevented and thereby themat seal holder 11 can be held steadily by thehousing 5. - Further, the biasing
portions 23 are formed so as to protrude toward the opposite surface of thehousing 5, so that the engagement of theengagement structures 9 can be strengthened by a simple structure without extensive design changes in themat seal holder 11. - Note that, although the
engagement strengthening portions 13 are provided on themat seal holder 11 in thewaterproof connector 1 according to the present embodiment, an engagement strengthening portion(s) may be provided on thehousing 5. - In addition, the
engagement strengthening portions 13 are formed as the biasingportions 23 that strengthen the engagement of the first andsecond surfaces engagement structures 9 in thewaterproof connector 1 according to the present embodiment. However, the engagement strengthening portion(s) 13 may take another configuration suitable for a configuration of the engagement structure(s) 9. - Further, the
engagement structure 9 may also take various configurations. For example, theengagement 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. Alternatively, theengagement structure 9 may have another configuration in which the engagement structure is configured of a press-in rod and a press-in hole. Here, the rod and the hole may be provided further with an anti-pullout structure. For example of the 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). - Furthermore, the biasing portion(s) 23 is formed as a protrusion protruded toward the disengagement direction of the
housing 5 from themat seal holder 11 in thewaterproof connector 1 according to the present embodiment. However, the biasing portion may be formed as an elastic member (e.g. a spring) for biasing themat seal holder 11. - Although the invention has been described above by reference to certain embodiments of the invention, the invention is not limited to the embodiments described above. Modifications and variations of the embodiments described above will occur to those skilled in the art, in light of the above teachings. The scope of the invention is defined by the appended claims.
Claims (3)
- A waterproof connector (1) comprising:a housing (5) on which an opening (3) is formed, and in which terminals connected with electric wires are housed;a mat seal (7) which is installed into the opening (3) of the housing (5),and through which the wires are inserted; anda mat seal holder (11) which is engaged with the opening (3) of the housing (5) by an engagement structure (9) to prevent the mat seal (7) from dropping off from the housing (5), and through which the wires are inserted;characterized in that the waterproof connector further comprises:an engagement strengthening portion (13) which is provided on one of the housing (5) and the mat seal holder (11) and configured to strengthen an engagement of the engagement structure (9), wherein the engagement strengthening portion (13) is formed as a biasing portion (23) that biases the other one of the housing (5) and the mat seal holder (11) so as to bias the mat seal holder (11) toward a disengagement direction of the mat seal holder (11) from the housing (5).
- The waterproof connector (1) according to claim 1, wherein
the engagement structure (9) includes a first engagement portion (19) provided on the mat seal holder (11) and a second engagement portion (21) provided on the housing (5),
the first engagement portion (19) has a first surface (15) that faces an opposite direction to an engagement direction of the mat seal holder (11) with the housing (5), and
the second engagement portion (21) has a second surface (17) that faces an opposite direction to the disengagement direction of the mat seal holder (11) from the housing (5). - The waterproof connector (1) according to claim 1 or 2, wherein
the biasing portion (23) is provided on the mat seal holder (11) as a protrusion protruded toward the engagement direction.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011186878A JP5767909B2 (en) | 2011-08-30 | 2011-08-30 | Waterproof connector |
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 (en) |
JP (1) | JP5767909B2 (en) |
KR (1) | KR20140052071A (en) |
CN (1) | CN103875132B (en) |
IN (1) | IN2014CN02295A (en) |
WO (1) | WO2013031088A1 (en) |
Families Citing this family (3)
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 (en) * | 2015-02-12 | 2019-09-11 | Aptiv Technologies Limited | Sealed connector |
JP6989472B2 (en) * | 2018-10-16 | 2022-01-05 | 矢崎総業株式会社 | Engagement structure between cover and block member, electronic component module, electrical junction box, and wire harness |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2537093Y2 (en) * | 1993-05-21 | 1997-05-28 | 日本プラスト株式会社 | Fixed structure of two articles |
JPH07228167A (en) | 1994-02-17 | 1995-08-29 | Iseki & Co Ltd | Travelling car body for agricultural use |
JP3230956B2 (en) | 1995-09-05 | 2001-11-19 | 矢崎総業株式会社 | Waterproof insulation displacement connector |
JP3672229B2 (en) * | 2000-02-23 | 2005-07-20 | 矢崎総業株式会社 | Holder removal prevention connector |
JP2003022868A (en) * | 2001-07-06 | 2003-01-24 | Auto Network Gijutsu Kenkyusho:Kk | Waterproof connector |
JP2004039584A (en) * | 2002-07-08 | 2004-02-05 | Sumitomo Wiring Syst Ltd | Waterproof connector |
JP2007299936A (en) * | 2006-04-28 | 2007-11-15 | Sunx Ltd | Attaching structure of electronic device |
JP2008004471A (en) * | 2006-06-26 | 2008-01-10 | Auto Network Gijutsu Kenkyusho:Kk | Waterproof connector, connector assembly, and manufacturing method of connector assembly |
JP2009043600A (en) * | 2007-08-09 | 2009-02-26 | Yazaki Corp | Rubber stopper body for waterproof connector, and waterproof connector |
JP2010027231A (en) * | 2008-07-15 | 2010-02-04 | Yazaki Corp | Waterproof connector |
JP2010140873A (en) * | 2008-12-15 | 2010-06-24 | Yazaki Corp | Waterproofing structure of connector for equipment |
JP5463971B2 (en) | 2010-03-10 | 2014-04-09 | 日産自動車株式会社 | Mobile body travel route generation device |
-
2011
- 2011-08-30 JP JP2011186878A patent/JP5767909B2/en active Active
-
2012
- 2012-08-01 KR KR1020147008146A patent/KR20140052071A/en active IP Right Grant
- 2012-08-01 EP EP12759270.7A patent/EP2751880B1/en active Active
- 2012-08-01 CN CN201280041780.3A patent/CN103875132B/en active Active
- 2012-08-01 WO PCT/JP2012/004892 patent/WO2013031088A1/en active Application Filing
- 2012-08-01 IN IN2295CHN2014 patent/IN2014CN02295A/en unknown
Non-Patent Citations (1)
Title |
---|
None * |
Also Published As
Publication number | Publication date |
---|---|
JP5767909B2 (en) | 2015-08-26 |
KR20140052071A (en) | 2014-05-02 |
IN2014CN02295A (en) | 2015-06-19 |
EP2751880A1 (en) | 2014-07-09 |
WO2013031088A1 (en) | 2013-03-07 |
JP2013051042A (en) | 2013-03-14 |
CN103875132B (en) | 2016-08-31 |
CN103875132A (en) | 2014-06-18 |
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