JP2015204135A - Waterproof structure of wiring harness with connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a waterproof structure of a wiring harness with connector capable of easily water-proofing on a connection terminal and connection part of wire end while preventing increase of the size of the connector.SOLUTION: The waterproof structure of a wiring harness with connector has a water proof elastic sheet 16 that entirely covers plural back side openings 32 of rear face 14 of a connector housing 22 which has back side openings 32 of plural cavities 20. The water proof elastic sheet 16 has plural wire insertion parts 24 formed at positions corresponding to the plural back side openings 32 through which wires 18 are inserted. The plural wires 18 are disposed being inserted through the wire insertion parts 24 in a close contact state. A fixing means 26 holds the water proof elastic sheet 16 in a close contact state with the rear face 16 of the connector housing 22.

Description

  The present invention relates to a waterproof structure for a wire harness with a connector in which a connector is provided at a terminal of a wire harness composed of a plurality of electric wires.

  Conventionally, a plurality of connection terminals respectively connected to a plurality of electric wire terminals constituting the wire harness are provided in the terminal portion of the wire harness used in the electrical system of the automobile so as to extend in the front-rear direction of the connector housing. Further, connectors each accommodated and held in a plurality of cavities are attached. Then, by connecting such a connector to a mating connector provided in various electrical components, power supply and distribution from the battery to the electrical components can be performed easily and reliably. Such a wire harness with a connector is described in, for example, Japanese Patent Application Laid-Open No. Sho 62-188186 (Patent Document 1) and the like, and the front opening of each cavity opens to the front surface of the connector housing. While the terminals of the connector can be inserted, the rear openings of the cavities open on the rear surface of the connector housing, and the electric wires are drawn out of the connector housing.

  By the way, recently, in order to reduce the weight of a vehicle, the use of an aluminum electric wire instead of a copper electric wire has been studied as an electric wire constituting a wire harness. However, in the connection portion between the aluminum electric wire and the connection terminal made of a metal material containing copper as a main component, electric corrosion such as dissimilar metal corrosion is likely to occur due to liquid intrusion. Therefore, for example, as shown in JP2013-161702A (Patent Document 2), a connection portion between the aluminum electric wire and the connection terminal may be covered with a waterproof or anticorrosive material such as an epoxy resin that prevents liquid from entering. Proposed.

  However, in such a conventional waterproof structure, although the connection portion between each electric wire and the connection terminal can be reliably waterproofed, it is necessary to perform waterproofing for each electric wire, which complicates the manufacturing process and increases the number of steps. There was a problem that cost increase was inevitable. Moreover, since the connection part of the connection terminal in each electric wire becomes thick by waterproofing or an anticorrosive agent, there also existed a problem that the cavity of the connector which mounts them and the enlargement of the whole connector were unavoidable.

  In some cases, the waterproof standard required for the connector-attached wire harness is relatively low, such as when the connector-attached wire harness is disposed in the vehicle interior. In fact, a structure that can improve the performance has not been proposed yet.

JP 62-188186 A JP 2013-161702 A

  The present invention has been made in the background of the above-mentioned circumstances, and the solution to the problem can be easily waterproofed the connection portion between the connection terminal and the wire terminal without enlarging the connector itself. The object is to propose a waterproof structure of a wire harness with a connector.

  In the first aspect of the present invention, a plurality of connection terminals respectively connected to the wire terminals of a plurality of wires constituting the wire harness are respectively provided in a plurality of cavities extending in the front-rear direction of the connector housing. A waterproof structure for a wire harness with a connector, which is accommodated and held, wherein the plurality of rear openings are collectively formed on the rear surface of the connector housing in which the rear openings of the plurality of cavities open. While the waterproof elastic sheet for covering is in close contact, the waterproof elastic sheet is formed with a plurality of wire insertion portions through which the wires can be inserted at positions corresponding to the plurality of rear openings. The electric wire is closely inserted into the electric wire insertion portion, and the waterproof elastic sheet is held in close contact with the rear surface of the connector housing by the fixing means. And wherein the Rukoto.

  According to this aspect, the rear-side openings of the plurality of cavities are collectively formed on the rear surface of the connector housing in which the rear-side openings of the cavities that are likely to enter from the outside through the electric wire are opened. The waterproof elastic sheet for covering is in close contact. Moreover, the waterproof elastic sheet has a wire insertion portion formed at a position corresponding to the rear opening, and the electric wire extending outside the connector housing is inserted in close contact with the wire insertion portion. . Since the plurality of rear openings that are opened on the rear surface of the connector housing are covered by the waterproof elastic sheet, even when water is pushed from the outside through the electric wires toward the rear openings, the rear openings Therefore, it is possible to prevent water from entering the cavity of the connector from the front and to waterproof the connection portion between the connection terminal and the wire terminal.

  Moreover, since the waterproof elastic sheet is held in close contact with the rear surface of the connector housing by the fixing means, the waterproof performance of the waterproof elastic sheet can be reliably ensured.

  As described above, according to this aspect, the connector structure including the connector housing and the connection terminal is not changed at all, and the connection terminal and the wire terminal are connected with a simple structure in which the waterproof elastic sheet is brought into close contact with the rear surface of the connector housing. The waterproofness of the part can be ensured. Therefore, without requiring a large-scale anticorrosion structure for the connection terminal and the design change or enlargement of the connector itself as in the prior art, waterproofing of the connection portion between the connection terminal and the wire terminal with a simple structure using the existing connector as it is. Can be achieved.

  The waterproof elastic sheet can be advantageously formed by an arbitrary elastic member such as a rubber elastic body or an elastomer.

  The fixing means may be any means as long as the waterproof elastic sheet can be held in close contact with the rear surface of the connector housing, and is not limited to a specific structure. For example, it may be a fixing means made of a separate part such as a clip, or may be constituted by a waterproof elastic sheet and an adhesive or the like attached to the rear surface of the connector housing.

  According to a second aspect of the present invention, in the one described in the first aspect, an engagement protrusion that engages with the connection terminal is provided inside each cavity of the connector housing, While at least one of the plurality of cavities constitutes an empty cavity that does not accommodate the connection terminal, the fixing means penetrates the wire insertion portion of the waterproof elastic sheet with respect to the empty cavity. And a fixed portion having a shaft portion inserted into the cavity and a pressing portion provided at an end portion of the shaft portion and placed on the surface of the waterproof elastic sheet without penetrating the wire insertion portion. The engaging portion provided on the shaft portion of the fixed pin is engaged with the engaging protrusion in the empty cavity, and the pressing portion of the fixed pin is the waterproof elastic sheet. Pressed It is one in which the waterproof elastic sheet through the fixing pin is adapted to be held in close contact to the rear surface of the connector housing.

  According to this aspect, when an empty cavity in which the connection terminal is not accommodated is generated, it is possible to effectively use the empty cavity and provide the fixing means with the fixing pin inserted into the empty cavity. In addition, by engaging the engaging portion provided on the shaft portion of the fixing pin with the engaging protrusion provided in advance in each cavity, the pressing portion of the fixing pin is pressed against the waterproof elastic sheet. The waterproof elastic sheet can be held in close contact with the rear surface of the connector housing. Therefore, the waterproof elastic sheet can be held in close contact with the rear surface of the connector housing in a compact configuration without using a new location for the fixing means by utilizing the existing configuration for the connector.

  According to a third aspect of the present invention, in the one described in the first aspect, at least two electric wires that pass through the electric wire insertion portion of the waterproof elastic sheet and are drawn out of the connector housing are mutually connected. By being combined, at least one of the two electric wires drawn out from the electric wire insertion portion has an inclined extension portion that inclines in the penetration direction of the electric wire insertion portion and extends from the electric wire insertion portion. In addition, the fixing means is configured by preventing the movement of the waterproof elastic sheet by the inclined extending portion coming into contact with the waterproof elastic sheet.

  According to this aspect, at least one of the two electric wires is inclined in the penetration direction of the electric wire insertion portion by a simple configuration in which at least two electric wires drawn out from the electric wire insertion portion of the waterproof elastic sheet are more aligned. Thus, it can be configured to have an inclined extending portion that extends from the electric wire insertion portion and inclines. As a result, a fixing means is configured, and the movement of the waterproof elastic sheet is prevented by the abutment of the inclined extending portion on the waterproof elastic sheet, and the waterproof elastic sheet is held in close contact with the rear surface of the connector housing. is there.

  In particular, in this aspect, the fixing means can be configured by simply matching at least two electric wires drawn from the connector housing without requiring additional parts, resulting in an increase in the number of parts and an increase in the size of the connector. A waterproof structure can be constructed without any problems.

  A fourth aspect of the present invention is the one described in the third aspect, wherein the at least two electric wires are constituted by two of the plurality of electric wires that are most spaced apart.

  According to this aspect, since the two most distantly arranged electric wires are more combined, the inclined extending portion that extends inclinedly from the electric wire insertion portion crosses over a wide range of the waterproof elastic sheet. Can be arranged. As a result, the inclination angle of the inclined extension portion increases and the contact area with the waterproof elastic sheet also increases, so that the movement of the waterproof elastic sheet can be prevented with a larger blocking force.

  According to a fifth aspect of the present invention, in the one according to any one of the first to fourth aspects, the waterproof elastic sheet has a plurality of the wire insertion portions in advance with the cavity of the connector housing. The elastic sheet material is formed of a cut elastic sheet material cut from the elastic sheet material arranged at the same pitch in a size including the wire insertion portions corresponding to the number of the cavities of the connector housing.

  Conventionally, a structure is known in which an elastic sheet material is disposed inside a multipolar connector housing to ensure the waterproofness of the connector. This aspect uses a cut elastic sheet material cut into a size including a necessary wire insertion portion using an existing elastic sheet material provided with a wire insertion portion at a pitch predetermined by such a standard. A waterproof structure can be constructed with a simple structure. Therefore, further reduction in manufacturing cost can be realized.

  According to the present invention, the waterproof elastic sheet that collectively covers the rear side openings of the plurality of cavities is in close contact with the rear surface of the connector housing. And the electric wire insertion part is formed in the position corresponding to a back side opening part in the elastic sheet for waterproofing, and the electric wire is penetrated and arrange | positioned in a close state with respect to the electric wire insertion part. Therefore, even when water is pushed in from the outside through the wire, water can be prevented from entering the connector cavity from the opening on the rear side, and the connection portion between the connection terminal and the wire terminal can be waterproofed. Can do. Moreover, since the waterproof elastic sheet is held in close contact with the rear surface of the connector housing, the waterproof performance of the waterproof elastic sheet can be reliably ensured. Therefore, there is no need for a conventional anticorrosive structure for the connecting terminal, a design change or an increase in size of the connector itself, and a simple structure in which a waterproof elastic sheet is in close contact with the rear surface of the connector housing. The waterproofness of the connection part can be secured.

The perspective view which shows the waterproof structure of the wire harness with a connector as 1st embodiment of this invention. The disassembled perspective view of the waterproof structure of the wire harness with a connector shown in FIG. III-III cross-sectional enlarged view in FIG. The perspective view for demonstrating the manufacturing method of the wire harness with a connector shown in FIG. The perspective view which shows the waterproof structure of the wire harness with a connector as 2nd embodiment of this invention. The perspective view which shows the other aspect of the elastic sheet for waterproofing used for the waterproof structure of the wire harness with a connector of this invention.

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

  First, in FIGS. 1 to 4, the connector 10 of the connector-attached wire harness 12 is feared to enter the connector 10 from the outside using the waterproof structure of the connector-attached wire harness according to the first embodiment of the present invention. A structure in which the rear surface 14 is waterproofed by a waterproof elastic sheet 16 is shown. As shown in FIGS. 1 and 2, the connector-attached wire harness 12 includes a plurality of electric wires 18 constituting the wire harness and a connector 10 provided at an electric wire terminal of the plurality of electric wires 18. Yes. And the other party connector provided in the various vehicle-mounted electrical equipment which is not shown in figure from the front side (left side in FIG. 1) of the connector 10 is connected. In the following description, “upper” means the upper side in FIG. 3, “lower” means the lower side in FIG. 3, “front” means the left side in FIG. 3, and “rear” means the right side in FIG. Shall.

  The connector 10 includes a connector housing 22 having twelve cavities 20, a waterproof elastic sheet 16 disposed at the rear of the connector housing 22 and having twelve electric wire insertion portions 24, and the waterproof elastic sheet 16. And a fixing pin 26 held in the housing 22. In the present embodiment, the connection terminals 28 are accommodated and held in 11 cavities 20 of the 12 cavities 20 of the connector housing 22, while the remaining one cavity 20 is accommodated in the connection terminal 28. The empty cavity 30 is not held. An electric wire 18 is connected to the connection terminal 28, and the electric wire 18 extends to the rear of the connection terminal 28, and extends to the outside through the electric wire insertion portion 24 provided in the waterproof elastic sheet 16. It has become. On the other hand, an electric wire insertion portion 24 provided in the waterproof elastic sheet 16 is inserted into an empty cavity 30 in which the connection terminal 28 is not accommodated and held (upper right in FIGS. 1, 2, 4), and is fixed later. The shaft portion 38 of the pin 26 is inserted and arranged. At this time, the pressing portion 40 provided at one end portion (right side in FIGS. 1 to 3) of the shaft portion 38, which will be described later, has a size that does not penetrate the wire insertion portion 24, and is elastic for waterproofing. It is placed on the surface of the sheet 16.

  As shown in FIGS. 1 and 2, the connector housing 22 has a substantially block shape, and is integrally formed by injection molding or the like with a synthetic resin such as polypropylene (PP) or polyamide (PA). . Twelve cavities 20 are formed through the connector housing 22. Specifically, twelve cavities 20 having a substantially rectangular cross-sectional shape opening toward the front and rear are formed on the front surface 13 side and the rear surface 14 side of the connector housing 22, and the rear surface 14 of the connector housing 22 is formed on the rear surface 14. Twelve rear openings 32 into which the connection terminals 28 can be inserted are formed. In addition, as shown in FIG. 3, the inner surface 34 of the cavity 20 of the connector housing 22 is provided with an engaging protrusion 36 that protrudes in a cantilevered manner toward the front inward. The connecting terminal 28 is engaged with the rear end portion 54 of the contact portion 52 so that the connecting terminal 28 is prevented from coming off from the cavity 20. In order to facilitate understanding, the connection terminals 28 and the electric wires 18 are indicated by phantom lines in FIG.

  As shown in FIGS. 1 and 2, the waterproof elastic sheet 16 has a substantially rectangular flat plate shape, and is formed integrally with a rubber material such as EPDM (ethylene propylene rubber) or other elastic member, for example. Has been. In the waterproof elastic sheet 16, twelve electric wire insertion portions 24 having a substantially circular cross-sectional shape through which the electric wires 18 can be inserted are formed at positions corresponding to the twelve rear openings 32 of the connector housing 22. Moreover, the waterproof elastic sheet 16 can be advantageously formed as a belt-like elastic sheet material that is continuous in the longitudinal direction, and the belt-like elastic sheet material is cut to an arbitrary length (in this embodiment, twelve electric wires are inserted). (Cut so as to include the portion 24). The inner diameter dimension of the electric wire insertion portion 24 is formed to be the same as or slightly smaller than the outer diameter dimension of the electric wire 18.

  As shown in FIGS. 2 and 3, the fixing pin 26 is provided at a shaft portion 38 extending in a rod shape and one end portion (right side in FIGS. 2 and 3) of the shaft portion 38. It has a substantially pin shape composed of a substantially rectangular pressing portion 40 extending outward in the direction, and is integrally formed by injection molding or the like with a synthetic resin such as polypropylene (PP) or polyamide (PA). Has been. Further, as shown in FIG. 3, a through hole is provided on the other end (left side in FIG. 3) side of the shaft portion 38, and the inner surface 34 of the cavity 20 is provided by the through hole. An engaging portion 42 that engages with an engaging protrusion 36 provided on the inner surface is configured. The pressing portion 40 is sized so as not to penetrate the wire insertion portion 24.

  As shown in FIGS. 1 to 3, the electric wire 18 is connected to the connection terminal 28. That is, the connection terminal 28 is connected to the wire terminal of the electric wire 18, and the connection terminal 28 is received and held from the rear side in the cavity 20 provided in the connector housing 22 of the connector 10. Yes. More specifically, as shown in FIG. 3, the insulation coating 44 on the distal end side of the wire end of the electric wire 18 is peeled to expose the core wire 46, and the core wire 46 is connected to the core wire crimping portion 48 of the connection terminal 28. Further, the electric wire 18 is fixed and connected to the connection terminal 28 by crimping the tip portion of the electric wire 18 where the core wire 46 is exposed to the electric wire crimping portion 50 of the connection terminal 28. Further, a cylindrical contact portion 52 that opens in the front-rear direction is formed at the distal end portion (left side in FIG. 3) of the connection terminal 28. Then, the connection terminals 28 thus connected to the wire terminals of the electric wires 18 are respectively inserted into the cavities 20 provided in the connector housing 22 from the rear side. As a result, the rear end portion 54 of the contact portion 52 of the connection terminal 28 is engaged with the engagement protrusion 36 provided in the cavity 20 to prevent the connection terminal 28 from coming off. Further, by inserting the connector 10 into the mating connector, a connector terminal (not shown) of the mating connector is inserted into the cylindrical contact portion 52 of the connection terminal 28, and each electric wire 18 is electrically connected to the mating connector. It has become so. The connection terminal 28 is integrally formed using various metal materials that are conductive and can be pressed or punched, such as brass, copper, copper alloy, aluminum, aluminum alloy, or the like. .

  Next, a method of manufacturing the connector-attached wire harness 12 having such a configuration will be described with reference to FIG. First, a waterproof elastic sheet 16 as shown in FIG. 4A is prepared. More specifically, first, a belt-like elastic sheet material in which the wire insertion portions 24 are arranged at the same pitch as the cavity 20 of the connector housing 22 of the wire harness with connector 12 is selected. Next, the band-shaped elastic sheet material is cut to a size including the twelve electric wire insertion portions as many as the cavities 20 of the connector housing 22. The waterproof elastic sheet 16 is formed by the cut elastic sheet material thus obtained. The waterproof elastic sheet 16 thus formed is prepared in the waterproof elastic sheet preparation step.

  Subsequently, as shown in FIG. 4B, the waterproof elastic sheet 16 is held in close contact with the rear surface 14 of the connector housing 22. That is, first, the waterproof elastic sheet 16 that covers the rear side openings 32 collectively is brought into close contact with the rear surface 14 of the connector housing 22 in which the rear side openings 32 of the twelve cavities 20 are opened. Next, the waterproof elastic sheet 16 is held in close contact with the rear surface 14 of the connector housing 22 by using the fixing pins 26. More specifically, the engaging portion 42 provided on the shaft portion 38 of the fixing pin 26 inserted and disposed in the empty cavity 30 engages with the engaging protrusion 36 in the empty cavity 30, thereby fixing the fixing pin. 26 pressing portions 40 are pressed against the waterproof elastic sheet 16. As a result, the waterproof elastic sheet 16 is held in close contact with the rear surface 14 of the connector housing 22 via the fixing pins 26. In the present embodiment, the fixing means is constituted by the shaft portion 38 and the pressing portion 40 constituting the fixing pin 26 in this way. Such a series of operations is executed in the waterproof elastic sheet holding step.

  Then, as shown in FIG. 4C, after the waterproof elastic sheet holding step, the connection terminal 28 to which the electric wire 18 is connected passes through the electric wire insertion portion 24 from the rear side of the waterproof elastic sheet 16. Then, an electric wire attaching process is performed, which is inserted and arranged in each of the eleven cavities 20 of the connector housing 22. Since the inner diameter dimension of the electric wire insertion portion 24 is formed to be the same as or slightly smaller than the outer diameter dimension of the electric wire 18, the electric wire 18 is inserted and arranged in the electric wire insertion portion 24 in a close state. Thereby, manufacture of the wire harness 12 with a connector is completed.

  According to the waterproof structure of the wire harness with a connector according to this embodiment, the rear surface 14 on which the rear side opening 32 of each cavity 20 of the connector 10 (connector housing 22) is concerned about the entry of water from the outside. On the other hand, the waterproof elastic sheet 16 that covers the rear side opening 32 in a lump is in close contact. In addition, since the wire insertion portion 24 is formed in the waterproof elastic sheet 16 at a position corresponding to the rear side opening 32, the electric wire 18 extending outward from the rear side opening 32 is connected to the wire insertion portion 24. Are arranged in close contact with each other. Therefore, even when water flows from the outside through the electric wire 18 toward the rear side opening 32, it is possible to prevent water from entering the connector 10 from the rear side opening 32. The connection portion between the terminal 28 and the electric wire 18 can be waterproofed. Moreover, since the waterproof elastic sheet 16 is held in close contact with the rear surface 14 of the connector 10 by the fixing means, the waterproof effect of the waterproof elastic sheet 16 can be reliably ensured.

  Therefore, the structure of the connector 10 such as the connector housing 22 and the connection terminal 28 is not changed at all, and the connection terminal 28 and the electric wire 18 are simply configured by closely contacting the waterproof elastic sheet 16 to the rear surface 14 of the connector housing 22. The waterproofness of the connecting portion can be ensured. Accordingly, it is possible to eliminate the need for a large-scale anticorrosion structure of the connection terminal and a design change and an increase in size of the connector itself as in the prior art.

  In addition, when there is an empty cavity 30 in which the connection terminal 28 is not accommodated, the fixing means can be configured by the fixing pin 26 inserted into the empty cavity 30 using the empty cavity 30. That is, in order to use the engaging projection 36 provided in the empty cavity 30, the engaging portion 42 is provided on the shaft portion 38 of the fixing pin 26, whereby the pressing portion 40 of the fixing pin 26 is made to be a waterproof elastic sheet. The waterproof elastic sheet 16 can be held in close contact with the rear surface 14 of the connector housing 22 by being pressed against the connector 16. In this way, by utilizing the existing configuration in the connector 10, the waterproof elastic sheet 16 can be held in close contact with the rear surface 14 of the connector housing 22 in a compact configuration without newly providing a place for fixing means. Can do.

  Conventionally, a structure is known in which an elastic sheet material is disposed inside a multipolar connector housing to ensure the waterproofness of the connector. In this embodiment, the cut | disconnected cut | disconnected to the magnitude | size containing the required number of electric wire insertion parts 24 using the existing elastic sheet material in which the electric wire insertion part 24 was provided with the pitch predetermined by such a specification. Since a waterproof structure can be realized by a simple structure using an elastic sheet material, a further reduction in manufacturing cost can be realized.

  Next, the waterproof structure of the connector-attached wire harness 56 according to the second embodiment of the present invention will be described in detail with reference to FIG. 5. In the drawings, the same reference numerals as those in the above embodiment are attached, and detailed description thereof is omitted. Compared with the above embodiment, the present embodiment is different from the above embodiment in that the fixing means is configured by the two electric wires 18 drawn out from the electric wire insertion portion 24 being joined together. It is shown. Note that, in order to facilitate understanding, in FIG. 5, two of the electric wires 18 that are most separated from the electric wires 18 drawn out from the electric wire insertion portion 24 are extracted and shown.

  More specifically, the two electric wires 18 drawn out from the electric wire insertion portion 24 are combined with each other, so that the two electric wires 18 are inclined in the penetration direction of the electric wire insertion portion 24 and extend from the electric wire insertion portion 24. An extending portion 58 is provided. Thereby, the extension base end portion of the inclined extension portion 58 abuts against the waterproof elastic sheet 16 so that the movement of the waterproof elastic sheet 16 is prevented. In the present embodiment, the fixing means for preventing the waterproof elastic sheet 16 from moving is configured by the two electric wires 18 being joined to each other to form the inclined extending portion 58 as described above. . Since this embodiment only changes the fixing means of the waterproof elastic sheet 16 as compared with the above-described embodiment, it is possible to obtain substantially the same effects as the above-described embodiment except for the effects caused by the fixing means. .

  Further, in this embodiment, the fixing means can be configured by merely matching the two electric wires 18 drawn out from the connector housing 22 without the need for additional parts, thereby increasing the number of parts and increasing the size of the connector. A waterproof structure can be constructed without inviting. In addition, since the two most distantly arranged electric wires 18 are combined, the inclined extending portion 58 extending inclinedly from the electric wire insertion portion 24 crosses over a wide range of the waterproof elastic sheet 16. Can be placed in. Therefore, since the contact area with the waterproof elastic sheet 16 is also increased, the movement of the waterproof elastic sheet 16 can be blocked with a larger blocking force. In addition, in this embodiment, although illustrated about the case where the two electric wires 18 were match | combined more, you may match | combine three or more electric wires 18 more. Further, it is only necessary that the inclined extending portion 58 is formed on at least one electric wire 18 among the more combined electric wires 18.

  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 wire insertion portion 24 has a substantially circular cross-sectional shape. However, as illustrated in FIG. 6, as illustrated in FIG. 6, the slit-shaped wire insertion portion 62 ( 6 (a)) and a slit-like electric wire insertion portion 66 (FIG. 6 (b)) penetrating the waterproof elastic sheet 64 in a cross shape can also be employed. According to such slit-shaped electric wire insertion portions 62 and 66, the electric wire insertion portions 62 and 66 into which the electric wires 18 and the fixing pins 26 are not inserted can be held in a state where they are not opened to the outside. The waterproofness can be further improved.

  In the above embodiment, the fixing means using the fixing pins 26 and the two electric wires 18 are more exemplified as the fixing means. However, the fixing means uses the waterproof elastic sheet 16 of the connector housing 22 as an example. What is necessary is just to be able to hold | maintain closely to the rear surface 14, and it is not limited to a concrete structure etc. For example, it may be a fixing means made of a separate part such as a clip, or may be constituted by an adhesive or the like that is attached to the waterproof elastic sheet 16 and the rear surface 14 of the connector housing 22.

12, 56: Wire harness with connector (wire harness), 13: Front surface, 14: Rear surface, 16, 60, 64: Elastic sheet for waterproofing, 18: Electric wire, 20: Cavity, 22: Connector housing, 24, 62, 66: electric wire insertion part, 26: fixing pin (fixing means), 28: connection terminal, 30: empty cavity, 32: rear side opening, 34: inner surface (inside), 36: engagement protrusion, 38: shaft part (Fixing means), 40: pressing part (fixing means), 42: engaging part, 56: inclined extending part (fixing means)

Claims (5)

A wire with a connector, wherein a plurality of connection terminals respectively connected to the wire terminals of a plurality of wires constituting a wire harness are respectively housed and held in a plurality of cavities extending in the front-rear direction of the connector housing. The waterproof structure of the harness,
While the rear surface of the connector housing where the rear side openings of the plurality of cavities open, a waterproof elastic sheet that covers the plurality of rear side openings collectively is in close contact,
The waterproof elastic sheet is formed with a plurality of wire insertion portions through which the wires can be inserted at positions corresponding to the plurality of rear openings, and the plurality of wires are in close contact with the wire insertion portions. Has been
The waterproof structure for a wire harness with connector, wherein the waterproof elastic sheet is held in close contact with the rear surface of the connector housing by a fixing means. Each of the cavities of the connector housing is provided with an engagement protrusion that engages with the connection terminal, and at least one of the plurality of cavities constitutes an empty cavity in which the connection terminal is not accommodated. While
The fixing means is provided at an end portion of the shaft portion, the shaft portion being inserted into the cavity through the wire insertion portion of the waterproof elastic sheet with respect to the empty cavity, and the shaft portion. It is configured to include a fixing pin having a pressing portion placed on the surface of the waterproof elastic sheet without penetrating the wire insertion portion,
An engagement portion provided on a shaft portion of the fixing pin engages with the engagement protrusion in the empty cavity, and the pressing portion of the fixing pin is pressed against the elastic sheet for waterproofing. The waterproof structure of the wire harness with connector according to claim 1, wherein the waterproof elastic sheet is held in close contact with a rear surface of the connector housing via a pin.   At least two of the two electric wires drawn out from the electric wire insertion portion are formed by joining at least two electric wires that pass through the electric wire insertion portion of the waterproof elastic sheet and are drawn out of the connector housing. One is configured to have an inclined extending portion that inclines in the penetration direction of the electric wire insertion portion and extends from the electric wire insertion portion, and the inclined extension portion abuts against the waterproof elastic sheet. The waterproof structure of the wire harness with connector according to claim 1, wherein the fixing means is configured by preventing movement of the elastic sheet for waterproofing.   The waterproof structure of the wire harness with a connector according to claim 3, wherein the at least two electric wires are constituted by two of the plurality of electric wires that are most spaced apart from each other.   In the waterproof elastic sheet, a plurality of the wire insertion portions are arranged in advance at the same pitch as the cavities of the connector housing, and the number of the wire insertion portions of the cavities included in the connector housing. The waterproof structure of the wire harness with a connector of any one of Claims 1-4 comprised by the cutting | disconnection elastic sheet material cut | disconnected by the magnitude | size containing this.

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