JP2015204229A - Waterproof structure of connector fitting portion - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a new waterproof structure of a connector fitting portion, which can inexpensively and simply waterproof the connector fitting portion, without changing the structure of a connector itself.SOLUTION: The present invention provides a waterproof structure of a connector fitting portion 14 made by fitting a connector housing 26 of a second connector 12 to an installation hole 30 formed to open on a connector housing 24 of a first connector 10. On an upper surface 62 of the connector housing 24 of the first connector 10, a cover member 18 capable of expanding/contracting in the fitting direction of the first connector 10 and the second connector 12, and on the other hand, the cover member 18 is equipped with an installing portion 50 to the connector housing 24 provided at a center part in an expanding/contracting direction, and a pair of expanding/contracting portions 52 and 52 provided on both sides of the installing portion 50 in the expanding/contracting direction so as to freely expand/contract. The pair of expanding/contracting portions 52 and 52 are extended to both sides of the installing portion 50, thereby covering the whole of the upper surface 16 of the connector fitting portion 14 with the cover member 18.

Description

  The present invention relates to a waterproof structure of a connector fitting portion in which connectors provided at the end of a wire harness are fitted to each other.

  2. Description of the Related Art Conventionally, a wire harness used in an automobile electrical system is configured by bundling a plurality of electric wires, and a connector in which a terminal fitting connected to each electric wire terminal is accommodated in a connector housing is an end of the wire harness. Is provided. And by fitting the connectors provided in the terminal of a wire harness, one wire harness is electrically connected to the other wireness.

  By the way, in the connector fitting part where the connectors of the wire harness are fitted together, there is a possibility of water entering from the gap between the fitting parts of both connectors and the wire outlet of each connector end. Various waterproof structures have been conventionally employed in the case where they are disposed at a site where there is a concern about the entry of water. For example, Japanese Patent Laid-Open No. 7-73926 (Patent Document 1) proposes a structure in which a seal rubber plate is provided inside each connector to prevent water from entering from the wire outlet at the connector end. . Japanese Patent Laid-Open No. 11-204191 (Patent Document 2) discloses that a separately formed box-shaped waterproof cover half is externally attached to each wire harness, and the connectors are fitted together after fitting the connectors together. The structure which accommodates a connector fitting part in a waterproof cover by mutually assembling | attaching a waterproof cover half body around is proposed.

  In recent years, in order to reduce the weight of a vehicle, the use of an aluminum wire instead of a copper wire has been studied as an electric wire constituting a wire harness. In this case, in the connection portion between the aluminum electric wire and the terminal fitting mainly composed of copper, electric corrosion such as dissimilar metal corrosion is likely to occur due to the liquid intrusion. Therefore, conventionally, it is required to take some waterproof measures for the connector fitting portion disposed in the vehicle compartment where there is no concern about water entry.

  However, in the waterproof structure of the connector fitting portion described in Patent Document 1, a design change and an increase in size of the connector itself are unavoidable, resulting in high cost and difficulty in housing in an existing installation space. was there. In addition, the waterproof structure of the connector fitting portion described in Patent Document 2 requires a separate waterproof cover, which inevitably increases the cost due to the cost of the mold, etc. There was a problem that it was difficult to accommodate. In short, when the connector fitting part is installed in the vehicle compartment and an aluminum wire is used, the waterproofness of the connector fitting part is inexpensive and small when the waterproof standard required for the connector fitting part is relatively low. In fact, no structure has been proposed yet that can improve the above.

JP-A-7-73926 JP-A-11-204191

  The present invention has been made in the background of the above-mentioned circumstances, and the problem to be solved is that the connector fitting portion can be waterproofed inexpensively and easily without changing the structure of the connector itself. It is in proposing the waterproof structure of a connector fitting part.

  A first aspect of the present invention includes a first connector provided at a terminal of one wire harness and a second connector provided at a terminal of the other wire harness, and the connector housing of the first connector has an opening. A waterproof structure of a connector fitting portion in which a connector housing of the second connector is fitted into a formed mounting hole, and the upper surface of the connector housing of the first connector is provided on the upper surface of the connector housing. A cover member that is extendable in the fitting direction of the first connector and the second connector is attached, while the cover member is attached to the connector housing provided at a central portion in the extension / contraction direction, The connector includes a pair of telescopic portions provided so as to be stretchable on both sides of the mounting portion in the stretching direction, and the connector is extended by extending the pair of stretchable portions to both sides of the mounting portion. Wherein the entire upper surface of the engaging portion is adapted to be covering by the cover member.

  According to this aspect, in a state where one wire harness and the other wire harness are mounted on a vehicle or the like, the first and second connectors are expanded and contracted in the fitting direction of the first / second connector on the upper surface side of the connector housing. The waterproof structure of the connector fitting portion can be easily ensured with a simple structure in which a flexible cover member is attached. That is, the cover member is mounted on the upper surface of the connector housing at the mounting portion provided in the central portion of the cover member in the expansion / contraction direction. And the whole upper surface of a connector fitting part can be covered with a cover member by extending | stretching a pair of expansion-contraction part provided elastically on both sides of the mounting part. As a result, the waterproofness of the connector fitting part is improved against water that falls from above the connector fitting part where there is a possibility of getting wet even in a highly waterproof installation area such as in the passenger compartment. Can be made.

  Moreover, since the pair of extendable portions of the cover member is freely extendable in the connector fitting direction, first, the mounting portion is mounted on the upper surface of the connector housing of the first connector with the pair of extendable portions contracted, After fitting the connector housing of the second connector into the mounting hole of the connector housing of the first connector, the pair of stretchable parts can be extended to both sides of the mounting part. Accordingly, when the first connector and the second connector are fitted, the cover member does not get in the way and the workability can be improved.

  According to a second aspect of the present invention, in the first aspect, in the cover member, at both ends of the mounting portion in the expansion / contraction direction, a pair of protrusions projecting upward from the connector housing. Protrusions are provided, the pair of telescopic parts are connected to the projecting tips of the pair of projecting parts, respectively, and the projecting tips of the projecting parts are connected to the second connector of the second connector. The connector housing is located above the uppermost end of the connector housing.

  In this aspect, a pair of expansion / contraction parts are connected with respect to the projecting tip parts of the pair of projecting parts formed to project at both ends of the mounting part, and the projecting tip parts of the projecting parts are connected to the second connector. The connector housing is positioned above the uppermost end of the connector housing. In many cases, the uppermost end portion of the connector housing of the second connector is provided with a portion such as a lock portion that is gripped during the fitting operation, and it is advantageous that the cover member interferes during the fitting operation of both connectors. Can be prevented.

  According to a third aspect of the present invention, in the one described in the first or second aspect, the pair of stretchable parts is configured by a bellows-like flat plate that is stretchable in the fitting direction.

  According to this aspect, since the pair of expansion and contraction parts is constituted by the bellows-like flat plate, the cover member can be provided at a low cost with a relatively simple structure.

  A fourth aspect of the present invention is the one described in the first aspect, wherein the mounting portion of the cover member is configured to include a storage case portion including a rail portion extending in the expansion / contraction direction, The pair of expansion / contraction portions includes a pair of drawer wall portions that are fitted into the rail portion of the storage case portion and are capable of entering / exiting the storage case from both sides in the expansion / contraction direction.

  According to this aspect, since the pair of expansion and contraction parts is configured by the drawer wall part that is assembled so as to be able to enter and exit the storage case part including the rail part provided in the mounting part, the rigidity of the cover member is improved. In addition, it is possible to more reliably prevent water splashing from above the connector fitting portion.

  According to a fifth aspect of the present invention, in the one described in the first aspect, the mounting portion of the cover member is configured to include a base portion, while the pair of expansion and contraction portions are formed of the base portion. It comprises a pair of hinge walls that are hinged to both ends in the telescopic direction.

  According to this aspect, since the pair of expansion and contraction parts is configured by the hinge wall part hinged to both ends of the base member as the mounting part, the rigidity of the cover member can be improved with a simple structure, the connector Water splashing from above the fitting portion can be prevented more reliably.

  According to a sixth aspect of the present invention, in any one of the first to fifth aspects, an attachment member mounting portion is provided on the lower surface of the connector housing of the first connector. Is.

  According to this aspect, since the attachment member mounting portion is provided on the lower surface of the connector housing of the first connector, it can be stably fixed to the vehicle body fixing portion or the like by mounting the attachment member. Therefore, the cover effect of the connector fitting portion by the cover member mounted on the upper surface of the connector housing can be secured more advantageously.

  According to the present invention, after the cover member is mounted on the upper surface of the connector housing at the mounting portion provided in the central portion of the cover member in the expansion / contraction direction, the pair of expansion / contraction portions provided on both sides of the mounting portion are extended. By doing, the whole upper surface of a connector fitting part can be covered with a cover member. Therefore, it is possible to improve the waterproofness of the connector fitting portion against water falling from the upper side of the connector fitting portion which is considered to be subject to water in a highly waterproof installation region such as a vehicle interior. it can. Moreover, after mounting the mounting portion on the upper surface of the connector housing of the first connector with the pair of expansion and contraction portions contracted, the connector housing of the second connector is fitted into the mounting hole of the connector housing of the first connector. The pair of stretchable parts can be extended on both sides of the mounting part. Therefore, when the first connector and the second connector are fitted, the cover member does not get in the way, and the workability can be improved.

The perspective view which shows the waterproof structure of the connector fitting part as 1st embodiment of this invention. The side view of the waterproof structure of the connector fitting part shown in FIG. It is a disassembled perspective view of the 1st connector and cover member which were provided in the terminal of one wire harness shown in FIG. 1, Comprising: The figure which shows the state before mounting | wearing with a cover member. The perspective view which shows the waterproof structure of the connector fitting part as 2nd embodiment of this invention ((a) Before expansion | extension of a cover member, (b) After expansion | extension of a cover member). The perspective view which shows the waterproof structure of the connector fitting part as 3rd embodiment of this invention ((a) Before expansion | extension of a cover member, (b) After expansion | extension of a cover member). FIG. 6 is a side view of the cover member shown in FIG. 5 ((a) before extension of the cover member, (b) after extension of the cover member).

  Embodiments of the present invention will be described below with reference to the drawings.

  1 to 3, the upper surface 16 of the connector fitting portion 14 in which water is likely to enter the connectors 10 and 12 from the outside using the waterproof structure of the connector fitting portion according to the first embodiment of the present invention. A structure in which the cover member 18 is waterproofed is shown. As shown in FIGS. 1 and 2, the connector fitting portion 14 includes a first connector 10 provided at the end of one wire harness 20 and a second connector provided at the end of the other wire harness 22. The connector 12 is configured by being fitted to each other. In order to facilitate understanding, in FIG. 1, the cover member 18 is indicated by a virtual line. Further, in the following description, the front side is the left side in FIG. 2, the rear side is the right side in FIG. 2, and the upper side is the upper side in FIG. 2, and the lower side is the lower side in FIG. Say it.

  FIG. 1 and FIG. 2 show connector housings 24 and 26 constituting the first and second connectors 10 and 12, respectively. Each of the connector housings 24 and 26 has a substantially block shape, and is integrally formed of a synthetic resin such as polypropylene (PP) or polyamide (PA) by injection molding or the like. The rear end portion 28 of the connector housing 24 of the first connector 10 is formed larger than the connector housing 26 of the second connector 12, and the rear end portion 28 of the connector housing 24 of the first connector 10 is on the rear side. By housing the connector housing 26 of the second connector 12 in the mounting hole 30 formed in the opening, the first and second connectors 10 and 12 are fitted to form the connector fitting portion 14. It has become so.

  A plurality of cavities (not shown) are formed through the connector housings 24 and 26. Specifically, the plurality of cavities are configured by through holes that open toward the front and rear of the connector housings 24 and 26. In the plurality of cavities provided in the connector housing 24 of the first connector 10, connectors (not shown) provided at the ends of a plurality of (in this embodiment, five) electric wires 32 constituting one wire harness 20. The terminal is inserted from the front side and is arranged at a predetermined position in the plurality of cavities. Similarly, connector terminals (not shown) provided at the ends of the plurality of electric wires 32 constituting the other wire harness 22 are also inserted into the plurality of cavities provided in the connector housing 26 of the second connector 12 from the rear side. These are arranged at predetermined positions in the plurality of cavities. Then, by fitting the first and second connectors 10 and 12, the connector terminals are connected to each other so that one wire harness 20 and the other wire harness 22 are electrically connected. It has become. Moreover, it is set as the structure which one wire harness 20 and the other wire harness 22 extended to the both sides (FIG.1 and FIG.2 left and right side) of the connector fitting part 14 by this.

  In addition, an attachment member mounting portion 36 is provided on the lower surface 34 of the connector housing 24 of the first connector 10, and a clip portion (not shown) is attached and fitted into the first and second connectors 10, 2. 12 can be stably fixed to a vehicle body fixing portion (not shown). On the other hand, a rectangular engagement protrusion having a cantilever structure projecting toward the rear side with an L-shaped cross section at the center in the width direction of the upper surface of the connector housing 26 of the second connector 12. 40 is provided. An engagement protrusion (not shown) is provided on the front side of the engagement protrusion 40 and is engaged with an engagement hole (not shown) provided in the mounting hole 30 of the connector housing 24 of the first connector 10. The connector housings 24 and 26 of the first and second connectors 10 and 12 are fitted. An engagement release protrusion 42 provided at the protrusion end of the engagement protrusion 40 and protruding upward is provided on the protrusion end (right side in FIG. 1) of the engagement protrusion 40. The connector housing 26 of the second connector 12 can be pulled out from the connector housing 24 of the first connector 10 by pulling the connector housing 26 of the second connector 12 backward while pushing the projection 42. . Further, a substantially rectangular leg portion 46 is provided at the rear end portion of the lower surface 44 of the connector housing 26 of the second connector 12 so as to protrude downward over the entire length in the width direction. The lower surface 48 of the leg portion 46 is formed so that the lower surface 34 of the connector housing 24 of the first connector 10 is flush with the connector fitting portion 14 with respect to a vehicle body fixing portion (not shown). It can be placed.

  The connector fitting portion 14 having such a structure is disposed, for example, in a vehicle interior of an automobile, and the upper surface 16 of the connector fitting portion 14 in which the entry of water into the connectors 10 and 12 from the outside is a concern. The cover member 18 is waterproofed.

  1-3, the cover member 18 used for the waterproof structure of the connector fitting part as this embodiment is shown. The cover member 18 extends and contracts on both sides of the mounting portion 50 of the first connector 10 provided in the center portion in the expansion / contraction direction (left-right direction in FIGS. 1 to 3) to the connector housing 24 and the mounting portion 50 in the expansion / contraction direction. And a pair of extendable parts 52, 52 provided freely. The mounting portion 50 is substantially bowl-shaped, and has a vertically-long rectangular fixing portion 54 and a substantially rectangular shape that protrudes upward from both ends of the fixing portion 54 in the expansion and contraction direction (left and right directions in FIGS. 1 to 3). It has a pair of protruding portions 56 and 56 having a shape. And a pair of expansion-contraction parts 52 and 52 are connected with the protrusion front-end | tip part 58 of a pair of protrusion parts 56 and 56, respectively. Each of the pair of expansion / contraction portions 52 and 52 is configured by a bellows-like flat plate that can expand and contract in the fitting direction of the connector housings 24 and 26 (in the left-right direction in FIGS. 1 to 3). Further, a gripping portion 60 having a substantially small rectangular shape is provided at each of the extended end portions of the pair of stretchable portions 52 and 52.

  In the cover member 18 having such a structure, the fixing portion 54 of the mounting portion 50 is mounted on the upper surface 62 of the rear end portion 28 of the connector housing 24 of the first connector 10, and then the pair of expansion / contraction portions 52, 52. The cover member 18 covers the entire upper surface 16 of the connector fitting portion 14 by extending the mounting portion 50 to both sides of the mounting portion 50 (left and right in FIGS. 1 to 3). In such a state, as shown in FIG. 2, the protruding tip portion 58 of the protruding portion 56 and the lowermost end portion 64 of the pair of stretchable portions 52, 52 are connected to the connector housing 26 of the second connector 12. It is comprised so that it may be located above the engagement cancellation | release protrusion 42 which is the uppermost end part.

  Next, an operation procedure for configuring the waterproof structure of the connector fitting portion according to this embodiment will be described with reference to FIG. First, a horizontally long belt-like flat plate member (not shown) that is the cover member 18 in the unfolded state is prepared. At both ends in the longitudinal direction of the belt-like flat plate member, a rectangular flat plate portion serving as the grip portion 60 is formed extending in the longitudinal direction. The cover member 18 is formed by punching or the like using a sheet material made of synthetic resin such as polypropylene (PP) or polyamide (PA). In addition, as the sheet material constituting the cover member 18, any material that can be folded and waterproof can be used.

  Subsequently, a pair of expansion / contraction portions 52, 52 are formed by performing bellows folding on both end portions in the length direction of the belt-like flat plate member at a certain crease interval. Subsequently, the cover member 18 is configured by bending the central portion in the length direction of the belt-like flat plate member into a hook shape, that is, bending both sides of the central portion in the length direction of the belt-like flat plate member upward (see FIG. 3). The fixing portion 54 of the mounting portion 50 of the cover member 18 is placed on the upper surface 62 of the rear end portion 28 of the connector housing 24 of the first connector 10, for example, from above the fixing portion 54 to a pair of fixing positions 66, 66. By applying heat, the cover member 18 and the connector housing 24 can be melted and fixed at the pair of fixed positions 66 and 66. In addition, as a means for fixing the cover member 18 and the connector housing 24, any other method such as bonding with an adhesive, fixing with a binding tape, and uneven fitting may be employed. Then, by housing the second connector 12 in the mounting hole 30 of the first connector 10 having such a configuration, the first connector 10 and the second connector 12 are fitted together so that the connector The fitting portion 14 is configured. Finally, as shown in FIGS. 1 and 2, the gripping part 60 provided on the pair of stretchable parts 52, 52 is gripped so that the pair of stretchable parts 52, 52 faces both sides of the mounting part 50. Thus, the entire upper surface 16 of the connector fitting portion 14 is covered with the cover member 18, whereby the waterproof structure of the connector fitting portion of this embodiment is configured.

  According to the waterproof structure of the connector fitting portion according to the present embodiment as described above, the cover member 18 is attached to the connector housing 24 of the first connector 10 in the mounting portion 50 provided at the center portion of the cover member 18 in the expansion / contraction direction. It is attached to the upper surface 62 of the rear end portion 28. Then, the entire upper surface 16 of the connector fitting portion 14 can be covered with the cover member 18 by extending the pair of stretchable portions 52, 52 toward both sides of the mounting portion 50. Therefore, the waterproof property of the connector fitting portion 14 against water or the like falling from above the connector fitting portion 14 which may be wetted even in a highly waterproof installation region such as a vehicle interior. Can be improved.

  In addition, the pair of expansion / contraction portions 52 and 52 of the cover member 18 are fitted on both sides of the mounting portion 50 after the connector housing 26 of the second connector 12 is fitted into the mounting hole 30 of the connector housing 24 of the first connector 10. Can be stretched. Therefore, when the first connector 10 and the second connector 12 are fitted, the cover member 18 does not get in the way, so that the workability can be improved.

  In addition, the disengagement protrusion 42 which is the projecting tip 58 of the projecting portion 56 of the cover member 18 and the lowermost end 64 of the pair of telescopic portions 52, 52 is the uppermost end of the connector housing 26 of the second connector 12. It is located above. Thereby, it is possible to advantageously prevent the cover member 18 from interfering during the fitting operation of the first connector 10 and the second connector 12. In addition, since the pair of expansion / contraction portions 52 and 52 are formed of a bellows-like flat plate, the cover member 18 can be provided at a low cost with a relatively simple structure.

  Next, the waterproof structure of the connector fitting portion as the second embodiment of the present invention will be described in detail with reference to FIG. 4, but members and parts having the same structure as the above embodiment are shown in the figure. By attaching the same reference numerals as those in the above embodiment, detailed description thereof will be omitted. In the present embodiment, the mounting portion of the synthetic resin cover member 70 is configured to include a synthetic resin housing case 72, while the pair of extendable portions includes a pair of drawer wall portions 74 and 74. In this regard, an embodiment different from the first embodiment is shown.

  More specifically, the storage case portion 72 has a substantially box shape that opens downward in the expansion / contraction direction and includes an upper and lower rail portion 76 that extends in the expansion / contraction direction on the inner surface. Engagement holes 80 having a substantially circular cross-sectional shape are provided in the front end portion and the rear end portion of both side surfaces 78 of the housing case portion 72 provided with the rail portion 76, respectively. Furthermore, a substantially rectangular fixed portion 84 extending downward is formed on both side edges of the central portion in the width direction of the lower surface of the housing case portion 72. On the other hand, each of the pair of drawer wall portions 74 and 74 has a substantially rectangular flat plate shape, and a substantially rectangular gripping portion 86 extending downward is formed on the front surface in the extension direction. Engaging protrusions 88 project outwardly from the rear end portions in the extending direction of both side surfaces facing the direction orthogonal to the direction. In addition, the pair of drawer wall portions 74 and 74 are formed so as to be fitted into the rail portion 76 of the housing case portion 72 so as to be able to enter and leave the housing case 72 from both sides in the expansion / contraction direction.

  The housing case portion 72, which is the mounting portion of the cover member 70 configured as described above, is placed on the upper surface 62 of the rear end portion 28 of the connector housing 24 of the first connector 10, and is shown in FIG. As shown, the fixing portion 84 is fixed to both side surfaces 90 of the connector housing 24 of the first connector 10 with an adhesive or the like. At this time, the engagement protrusions 88 of the pair of drawer wall portions 74 and 74 are engaged with the engagement hole 80 at the rear in the extending direction of the housing case portion 72, and the pair of drawer wall portions 74 and 74 are formed on the housing case portion 72. It is fixed against. For ease of understanding, the connector housings 24 and 26 are shown by dotted lines in FIG. Subsequently, by housing the second connector 12 in the mounting hole 30 of the first connector 10 having such a configuration, the first connector 10 and the second connector 12 are fitted to each other. A connector fitting portion 14 is configured. Finally, as shown in FIG. 4B, the gripping portions 86 provided on the pair of drawer wall portions 74 and 74, which are a pair of extendable portions, are gripped, and the pair of drawer wall portions 74 and 74. Is extended toward both sides of the housing case portion 72. As a result, the engagement protrusions 88 of the pair of drawer wall portions 74 and 74 are elastically deformed, get over the engagement hole 80 at the rear in the extension direction, and are engaged with the engagement hole 80 at the front in the extension direction of the housing case 72. The pair of drawer wall portions 74, 74 are fixed to the housing case portion 72, and the entire upper surface 16 of the connector fitting portion 14 is covered with the cover member 70, thereby waterproofing the connector fitting portion of this embodiment. The structure is to be constructed.

  According to the present embodiment, since the entire upper surface 16 of the connector fitting portion 14 can be covered with the cover member 70 with the pair of drawer wall portions 74, 74, the connector fitting is performed as in the first embodiment. The waterproofness of the part 14 can be improved. In addition, since the pair of drawer wall portions 74 and 74 can be extended after the connector housing 26 of the second connector 12 is fitted into the mounting hole 30 of the connector housing 24 of the first connector 10, the first As in the first embodiment, workability can be improved. In addition, since the pair of expansion and contraction parts is constituted by the pair of drawing wall parts 74 and 74, the rigidity of the cover member 70 can be improved and water splashing from above the connector fitting part 14 can be more reliably prevented. .

  Subsequently, with reference to FIGS. 5 and 6, the waterproof structure of the connector fitting portion as the third embodiment of the present invention will be described in detail, but the member having the same structure as the second embodiment and About the site | part, the code | symbol same as said 2nd embodiment is attached | subjected in a figure, and those detailed description is abbreviate | omitted. In the present embodiment, the mounting portion of the synthetic resin cover member 92 includes a base portion 94 made of synthetic resin, while the pair of expansion and contraction portions includes a pair of hinge wall portions 96 and 96. In this regard, an embodiment different from the second embodiment is shown.

  More specifically, the base portion 94 has a substantially rectangular flat plate shape, and substantially rectangular flat plate-like protrusions 98 protruding upward are formed at the four corners of the upper surface. Each of the protrusions 98 is provided with one bearing hole 100 and two small engagement holes 102 penetrating in the plate thickness direction (see FIG. 6). In addition, a substantially rectangular fixed portion 84 extending downward is formed on both side edges of the central portion in the width direction of the lower surface of the base portion 94. On the other hand, each of the pair of hinge walls 96, 96 has a substantially rectangular flat plate shape, and a rod-shaped shaft portion 104 and a shaft are formed at the rear end portions in the extending direction of both side surfaces facing the direction orthogonal to the extending direction. A rod-like engagement protrusion 106 that is thinner than the portion 104 is provided to protrude outward.

  The base portion 94, which is the mounting portion of the cover member 92 configured as described above, is placed on the upper surface 62 of the rear end portion 28 of the connector housing 24 of the first connector 10, and is shown in FIG. As shown, the fixing portion 84 is fixed to both side surfaces 90 of the connector housing 24 of the first connector 10 with an adhesive or the like. At this time, the shaft portions 104 of the pair of hinge wall portions 96 and 96 are engaged with the bearing holes 100 of the base portion 94, so that the pair of hinge wall portions 96 and 96 are both end portions in the expansion and contraction direction of the base portion 94. That is, the hinge wall portion 96 positioned below is hinged to the right end portion of the base portion 94 in the expansion / contraction direction, and the hinge wall portion 96 positioned above is hinged to the left end portion of the base portion 94 in the expansion / contraction direction. (See FIG. 6). In addition, the engagement projections 106 of the pair of hinge wall portions 96, 96 are engaged with the engagement holes 102 below the protrusions 98 of the base portion 94, so that the pair of hinge wall portions 96, 96 become the base portion. It is fixed to 94 protrusions 98. For ease of understanding, the connector housings 24 and 26 are indicated by dotted lines in FIG. Subsequently, by housing the second connector 12 (not shown) in the mounting hole 30 of the first connector 10 having such a configuration, the first connector 10 and the second connector 12 are fitted to each other. Thus, the connector fitting portion 14 is configured. Finally, as shown in FIG. 5 (b), the pair of hinge wall portions 96, 96 as a pair of extendable portions are gripped, and the pair of hinge wall portions 96, 96 are placed on both sides of the base portion 94. Stretch toward. As a result, the engagement protrusions 106 of the pair of hinge walls 96, 96 are elastically deformed and detached from the lower engagement hole 102, and are engaged with the engagement holes 102 above the protrusion 98 of the base portion 94. (See FIG. 6 (b)), the pair of hinge wall portions 96, 96 are fixed to the protruding portion 98 of the base portion 94. As a result, the entire upper surface 16 of the connector fitting portion 14 is covered with the cover member 92 so that the waterproof structure of the connector fitting portion of this embodiment is configured.

  According to this embodiment, since the entire upper surface 16 of the connector fitting portion 14 can be covered with the cover member 92 with the pair of hinge walls 96, 96, the connector fitting portion 14 of the connector fitting portion 14 is similar to the above embodiment. Waterproofness can be improved. Further, since the pair of hinge walls 96, 96 can be extended after the connector housing 26 of the second connector 12 is fitted into the mounting hole 30 of the connector housing 24 of the first connector 10, the above-described implementation. As with the embodiment, workability can be improved. In addition, since the pair of expansion / contraction parts is constituted by the pair of hinge walls 96, 96, the rigidity of the cover member 92 can be improved and the water splash from above the connector fitting part 14 can be further improved with a simple structure. It can be surely prevented.

  As mentioned above, although embodiment of this invention was explained in full detail, this invention is not limited by the specific description. For example, in the above-described embodiment, the expansion / contraction portions 52, 74, and 96 are configured by a bellows-like flat plate, a drawer wall portion, and a hinge wall portion. Any material can be used as long as it covers the entire upper surface 16. In the first embodiment, the attachment member mounting portion 36 is provided on the lower surface 34 of the connector housing 24 of the first connector 10, but this is not always necessary. Furthermore, in the first embodiment described above, the protruding portion 56 is provided in the mounting portion 50, but this is not essential.

10: 1st connector, 12: 2nd connector, 14: Connector fitting part, 16: Upper surface, 18, 70, 92: Cover member, 20: One wire harness, 22: The other wire harness, 24: Connector housing, 26: Connector housing, 30: Mounting hole, 34: Lower surface, 36: Mounting member mounting portion, 42: Disengagement protrusion (uppermost end), 50: Mounting portion, 52: Extendable portion, 56: Protruding portion 58: protruding tip portion, 62: upper surface, 72: storage case portion (mounting portion), 74: drawer wall portion (expandable portion), 76: rail portion, 94: base portion (mounting portion), 96: hinge wall portion (Expandable part)

Claims (6)

A first connector provided at the terminal of one wire harness and a second connector provided at the terminal of the other wire harness, with respect to a mounting hole formed in the connector housing of the first connector, The waterproof structure of the connector fitting portion formed by fitting the connector housing of the second connector,
On the upper surface of the connector housing of the first connector, a cover member that is extendable in the fitting direction of the first connector and the second connector is mounted,
The cover member includes a mounting portion to the connector housing provided at a central portion in the expansion / contraction direction, and a pair of expansion / contraction portions provided to be extendable on both sides of the mounting portion in the expansion / contraction direction,
A waterproof structure for a connector fitting portion, wherein the entire upper surface of the connector fitting portion is covered with the cover member by extending the pair of stretchable portions to both sides of the mounting portion. .   In the cover member, a pair of projecting portions projecting upward from the connector housing are provided at both end portions of the mounting portion in the extension / contraction direction, with respect to the projecting tip portions of the pair of projecting portions. The pair of expansion / contraction portions are connected to each other, and the protruding tip end portion of the protruding portion is located above the uppermost end portion of the connector housing of the second connector. Waterproof structure of connector fitting part.   The waterproof structure of the connector fitting portion according to claim 1 or 2, wherein the pair of stretchable portions is constituted by a bellows-like flat plate that is stretchable in the fitting direction.   While the mounting portion of the cover member includes a storage case portion including a rail portion extending in the expansion / contraction direction, the pair of expansion / contraction portions are fitted to the rail portion of the storage case portion. The waterproof structure of the connector fitting part of Claim 1 comprised including a pair of drawer | drawing-out wall part which can be entered / exited to the said storage case from the both sides of the said expansion-contraction direction.   While the mounting portion of the cover member includes a base portion, the pair of stretchable portions includes a pair of hinge wall portions that are hinged to both ends of the base portion in the stretchable direction. The waterproof structure of the connector fitting part of Claim 1 comprised.   The waterproof structure of the connector fitting portion according to any one of claims 1 to 5, wherein an attachment member mounting portion is provided on a lower surface of the connector housing of the first connector.