JP2011154961A - Wire harness, and manufacturing method thereof - Google Patents

Abstract

Provided is a wire harness capable of maintaining sufficient airtightness between a connector housing and a cable without melting the sheath of the cable as much as possible, and a method for manufacturing the same.
A melting member 37 is inserted into a cable insertion hole 34 via a first insertion portion 39, and the melting member 37 is pressed against the first pressure receiving portion 40 while being vibrated, whereby a first pressure receiving portion 40 is obtained. The molten resin that is the molten member 37 is poured into a gap 36 between the cables 2a to 2c and the airtight block 35, and the periphery of the cables 2a to 2c is melted. The airtight block 35 and the cables 2a to 2c are kept airtight, and a part of the airtight block 35 is formed to be transparent so that the molten resin filling state in the gap 36 is visible. Is.
[Selection] Figure 3

Description

  The present invention relates to a wire harness capable of sufficiently maintaining an airtightness between a connector housing and a cable, and a method of manufacturing the same.

  In general, in a wire harness used in a vehicle or the like, in order to prevent water and the like from entering the inside of the connector and causing a malfunction, the connector housing and the cable are kept airtight between them. Airtight holding structure is provided.

  A conventional wire harness 111 shown in FIGS. 11A and 11B uses a wire seal 114 in an airtight holding structure.

  In the wire harness 111, a rubber waterproof wire seal 114 is inserted between the outer housing 113 of the connector 116 and the cable 112, and the wire seal 114 is crushed between the outer housing 113 and the cable 112, thereby forming the outer housing. The airtightness between the outer housing 113 and the cable 112 is maintained by closely contacting both the cable 113 and the cable 112.

  The outer housing 113 is formed with a cable insertion hole 117 into which the end of the cable 112 is inserted. The wire seal 114 is a wire seal housing recess formed on the insertion side of the cable insertion hole 117 of the outer housing 113. 118. The opening of the wire seal housing recess 118 is blocked by the tail plate 115 to prevent the wire seal 114 from falling off.

  However, when the wire seal 114 is used in the airtight holding structure between the outer housing 113 and the cable 112, the wire seal 114 is provided for each cable 112, and each wire seal 114 is accommodated in the wire seal accommodating recess 118. Since it is necessary, the distance between the cables becomes wide in design and it becomes difficult to reduce the pitch of the cables 112. In particular, since a wire harness for a vehicle is required to be downsized, an airtight holding structure that can further reduce the pitch of the cable 112 is desired.

  Therefore, as shown in FIG. 12A, the cable 122 is sandwiched between an outer housing 123 made of resin and a welding member 124 made of resin, and the welding member 124 is ultrasonically welded to the outer housing 123 using a horn 125. Thus, there has been proposed a wire harness 121 configured to maintain airtightness between the outer housing 123 and the cable 122 (see, for example, Patent Document 1).

  In the wire harness 121, as shown in FIG. 12B, a groove 123a is formed in the outer housing 123 and a groove 124a is formed in the welding member 124, and the cable 122 is disposed in the groove 123a of the outer housing 123. From above, the welding member 124 is overlapped so that the groove 124a comes to the position of the cable 122. In this state, the horn 125 is brought into contact with the upper surface of the welding member 124, and the welding member 124 is vibrated and pressed downward from above ( The welding member 124 is ultrasonically welded to the outer housing 123.

JP 2000-48901 A Japanese Patent Laid-Open No. 11-66807

  However, the wire harness 121 described above has the following problems.

  In the technique related to ultrasonic welding disclosed in Patent Document 1, the sheath 122a that is the surface portion of the cable 122 is also melted. However, when designing or selecting the sheath 122a of the cable 122, ultrasonic welding is used. Assuming that the sheath 122a is melted, it is necessary to examine the thickness and material of the sheath 122a, which has been a limitation in designing the wire harness. In particular, regarding the thickness of the sheath 122a, it is necessary to design the sheath 122a to be thicker than usual, assuming that the sheath 122a is melted by ultrasonic welding.

  Accordingly, the present invention has been made in view of the above circumstances, and a wire harness capable of maintaining a sufficient airtightness between a housing of a connector and a cable without melting the sheath of the cable as much as possible, and the wire harness An object is to provide a manufacturing method.

  The present invention was devised to achieve the above object, and is a wire harness including a plurality of cables arranged in parallel and a connector having a housing to which ends of the plurality of cables are connected. The housing has an airtight block in which a plurality of cable insertion holes for inserting the plurality of cables into the housing are formed in parallel on a side to which the plurality of cables are connected, and each cable insertion The hole is formed so as to have a gap of a predetermined distance between the cable and the hermetic block, and the adjacent cable insertion holes are communicated so that they overlap, and the hermetic block is inserted with a melting member made of resin. The molten member is inserted into a portion where the adjacent cable insertion holes communicate with each other so as not to press the cable. A front end of the melting member inserted into the cable insertion hole via the first insertion portion against the inner wall surface of the cable insertion hole facing the first insertion portion. A first pressure receiving portion, and a part of the hermetic block is formed to be transparent so that the state of filling of the molten resin into the gap is visible, and the melting member is inserted into the first insertion portion. The tip of the melting member in contact with the first press receiving part is melted by inserting the cable into the cable insertion hole through the part and pressing the melting member while pressing the first pressing receiving part. In the wire harness, the molten resin as the molten member is poured into the gap and the periphery of the cable is covered with the molten resin so that the hermetic block and the cable are kept airtight.

  The hermetic block further includes a second insertion portion that is a portion into which the melting member is inserted and communicates with the cable insertion holes located on both sides of the plurality of cable insertion holes arranged in parallel. A second pressure receiving portion for pressing the tip of the melting member inserted into the second insertion portion is formed on the inner wall surface of the second insertion portion, and the melting member is further Inserting into the insertion portion, pressing the second pressing receiving portion while oscillating the melting member, melting the tip portion of the melting member in contact with the second pressing receiving portion, and melting the molten A molten resin as a member may be poured into the gap.

  The present invention was devised to achieve the above object, and is a wire harness including a plurality of cables arranged in parallel and a connector having a housing to which ends of the plurality of cables are connected. The housing has an airtight block in which a plurality of cable insertion holes for inserting the plurality of cables into the housing are formed in parallel on a side to which the plurality of cables are connected, and each cable insertion The hole is formed so as to have a gap of a predetermined distance between the cable and the hermetic block, and the adjacent cable insertion holes are communicated so that they overlap, and the hermetic block is inserted with a melting member made of resin. A second insertion that communicates with the cable insertion holes located on both sides of the plurality of cable insertion holes arranged in parallel. And a second pressure receiving portion for pressing the tip of the melting member inserted into the second insertion portion on the inner wall surface of the second insertion portion, and the gap to the gap In order to make the filling state of the molten resin visible, a part of the airtight block is formed transparently, the molten member is inserted into the second insertion portion, and the second pressure receiving member is vibrated while vibrating the molten member. The tip of the molten member that contacts the second press receiving portion is melted by pressing the portion, the molten resin that is the molten member is poured into the gap, and the periphery of the cable is the molten resin The wire harness is configured to keep airtightness between the airtight block and the cable by covering with.

  The airtight block includes an airtight block body formed so that the cable insertion hole has an opening that opens at an end portion on the cable insertion side, and the cable insertion hole so as to close the opening of the cable insertion hole. It may consist of a transparent plate provided in the airtight block main body, and the filling state of the molten resin into the gap may be visually recognized through the transparent plate.

  Moreover, you may make the color of resin used for the said fusion | melting member differ from the color of the said airtight block main body.

  The airtight block body may be made of resin, and the melting temperature of the melting member may be lower than the melting temperature of the airtight block body.

  The hermetic block main body is made of resin, and the melting member and the hermetic block main body are made of the same material or a material close to melting temperature, and a metal member is attached to the pressure receiving portion that presses the melting member. Alternatively, a hardly meltable member that is a resin having a melting temperature higher than that of the melting member may be provided.

  Further, the airtight block body has a holding part for holding the cable so as to hold the gap formed around the cable at a predetermined distance, and in the gap between the holding part and the transparent plate, The molten resin may be poured.

  In addition, after the gap between the sandwiching portion and the transparent plate is completely filled with the molten resin, the melt member is pressed and melted to flow into the gap between the sandwiching portion and the transparent plate. However, the cable may be pressed with the molten resin.

  Further, the airtight block main body includes a pair of resin-made divided airtight blocks that are divided into two so as to sandwich the plurality of cables arranged in parallel from above and below, and the plurality of cables are connected by the pair of divided airtight blocks. In a sandwiched state, the pair of divided hermetic blocks may be welded and integrated by ultrasonic welding.

  In addition, a plurality of the insertion portions and the pressure receiving portions are formed in the longitudinal direction of the cable, a plurality of the melting members are inserted into the plurality of insertion portions, and a plurality of the melting members are inserted into the plurality of insertion portions. May be pressed simultaneously.

  The present invention has been devised to achieve the above object, and is a wire harness comprising a plurality of cables arranged in parallel and a connector having a housing to which ends of the plurality of cables are connected. In the manufacturing method, the housing has an airtight block in which a plurality of cable insertion holes for inserting the plurality of cables into the housing are formed in parallel on a side to which the plurality of cables are connected, Each cable insertion hole is formed so as to have a gap of a predetermined distance between the cable and the airtight block, and the adjacent cable insertion holes communicate with each other so that the airtight block is melted from resin. The part into which the member is inserted, and the molten member is connected to the part where the adjacent cable insertion hole communicates so as not to press the cable. A distal end of the melting member inserted into the cable insertion hole via the first insertion portion on the inner wall surface of the cable insertion hole facing the first insertion portion and the first insertion portion. Forming a first pressure receiving portion for application, and forming a part of the hermetic block transparent to make the filling state of the molten resin into the gap visible. Inserting into the cable insertion hole via the first insertion portion, and pressing the first pressure receiving portion while oscillating the melting member, thereby bringing the distal end portion of the melting member into contact with the first pressure receiving portion The molten resin that is the molten member is poured into the gap and the periphery of the cable is covered with the molten resin so that the hermetic block and the cable are kept airtight. Characteristic Wai It is a manufacturing method of the harness.

  The present invention has been devised to achieve the above object, and is a wire harness comprising a plurality of cables arranged in parallel and a connector having a housing to which ends of the plurality of cables are connected. In the manufacturing method, the housing has an airtight block in which a plurality of cable insertion holes for inserting the plurality of cables into the housing are formed in parallel on a side to which the plurality of cables are connected, Each cable insertion hole is formed so as to have a gap of a predetermined distance between the cable and the airtight block, and the adjacent cable insertion holes communicate with each other so that the airtight block is melted from resin. The part into which the member is inserted, and communicates with the cable insertion holes located on both sides of the plurality of cable insertion holes arranged in parallel. And a second pressure receiving portion for pressing the tip of the melting member inserted into the second insertion portion on the inner wall surface of the second insertion portion, and In order to make the filling state of the molten resin into the gap visible, a part of the hermetic block is formed transparently, the melting member is inserted into the second insertion portion, and the melting member is vibrated while being vibrated. By pressing the second pressure receiving portion, the tip of the melting member that contacts the second pressure receiving portion is melted, and the molten resin that is the molten member is poured into the gap to surround the cable. The wire harness manufacturing method is characterized in that the hermetic block and the cable are kept airtight by covering the surface with the molten resin.

  ADVANTAGE OF THE INVENTION According to this invention, between the housing of a connector and a cable, the wire harness which can fully maintain airtight, and its manufacturing method can be provided, without fuse | melting the sheath of a cable as much as possible.

  In addition, according to the present invention, since the filling state of the molten resin can be visually recognized, it is possible to make it difficult to cause poor filling of the molten resin.

It is a perspective view which shows the wire harness which concerns on one embodiment of this invention. It is the sectional view on the AA line of FIG. It is the BB sectional view taken on the line of FIG. It is CC sectional view taken on the line of FIG. It is a side view which shows the 1st junction terminal in the wire harness of FIG. It is a figure which shows the 2nd junction terminal in the wire harness of FIG. 1, (a) is a side view, (b) is a bottom view. It is a figure which shows the 2nd junction terminal in the wire harness of FIG. 1, (a) is a side view, (b) is a bottom view. It is a perspective view which shows the wire harness which concerns on one embodiment of this invention. It is the DD sectional view taken on the line of FIG. It is the EE sectional view taken on the line of FIG. It is a figure which shows the conventional wire harness, (a) is a longitudinal cross-sectional view, (b) is the 11B-11B sectional view taken on the line. It is a figure which shows the conventional wire harness, (a) is a longitudinal cross-sectional view, (b) is an exploded cross-sectional view which shows the airtight holding structure.

  Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

  1 is a perspective view showing a wire harness according to the present embodiment, FIG. 2 is a sectional view taken along line AA, FIG. 3 is a sectional view taken along line BB, and FIG. 4 is a sectional view taken along line CC. FIG. Although details will be described later, FIG. 1 shows a state after the melting member 37 is melted, and FIGS. 2 to 4 show a state before the melting member 37 is melted.

  As shown in FIGS. 1-4, the wire harness 1 is provided with the some cable 2a-2c arrange | positioned in parallel, and the connector 3 to which the edge part of the cables 2a-2c is connected.

  The wire harness 1 is used to connect, for example, a motor of a hybrid electric vehicle (hereinafter referred to as HEV) and an inverter that drives the motor.

  Cable 2a-2c forms the sheath 5 which consists of bridge | crosslinking polyethylene etc. in the outer periphery of the center conductor 4 which consists of copper or aluminum. The cables 2a to 2c may be formed by sequentially forming an insulator, a shield conductor, and a sheath 5 on the outer periphery of the center conductor 4. Electricity of different voltage and / or current is transmitted to each of the cables 2a to 2c. For example, in the present embodiment, three cables 2a to 2c are used assuming a three-phase AC power line between the motor and the inverter, and each of the three cables 2a to 2c includes 120 cables. ° ACs with different phases are transmitted.

  The connector 3 includes a first connector portion 8 having a first housing 7 in which a plurality (three) of first joining terminals 6a to 6c are accommodated and a plurality of (three) second joining terminals 9a to 9c. And a second connector portion 11 having a second housing 10 in which the housings are arranged and stored.

  In the present embodiment, the two housings 7 and 10 are formed so that the first housing 7 is a male and the second housing 10 is a female when the two connector portions 8 and 11 are fitted. The male / female relationship may be reversed, and the first housing 7 may be a female and the second housing 10 may be a male.

  In the present embodiment, the first connector portion 8 is connected to a device such as a motor or an inverter, and the second connector portion 11 is connected to the cables 2a to 2c. The case where ˜2c is connected will be described. That is, in the present embodiment, the second connector portion 11 is provided with an airtight holding structure between the cables 2a to 2c and the housing (second housing 10).

  Here, prior to describing the airtight holding structure in the present embodiment, the connector 3 will be described. In addition, the structure of the connector 3 demonstrated here is an example to the last, and this invention is not limited to this.

  In this Embodiment, when the 1st connector part 8 and the 2nd connector part 11 are fitted as the connector 3, each of one surface of several 1st junction terminals 6a-6c and several 2nd junction terminals 9a-. The ones that face each other so as to be paired with each other and use a stacked state in which the first joining terminals 6a to 6c and the second joining terminals 9a to 9c are alternately arranged. This is a so-called “laminated structure type connector”.

  First, the 1st connector part 8 is demonstrated.

  The first connector portion 8 is an abbreviation that insulates the first housing 7 in which the three first joint terminals 6a to 6c are arranged and accommodated, and the first joint terminals 6a to 6c provided in the first housing 7 respectively. It comprises a plurality of rectangular parallelepiped insulating members 12a to 12d and a head portion 13a and a shaft portion 13b connected to the head portion 13a. The shaft portion 13b is formed of a plurality of first joining terminals 6a to 6c and a plurality of second joining terminals. Each of the contacts according to 9a to 9c and the plurality of insulating members 12a to 12d are penetrated, and the adjacent first insulating member 12a is pressed by the head portion 13a, whereby the plurality of first connecting terminals 6a to 6c and the plurality of first members are pressed. The two joining terminals 9a to 9c are collectively fixed and electrically connected at each contact, and at least a portion penetrating each contact includes a connection member 13 formed of an insulating material.

  The first housing 7 includes a first outer housing 7a and a first inner housing 7b that holds the first connecting terminals 6a to 6c in the first outer housing 7a.

  The first outer housing 7a is preferably formed of a metal such as aluminum having high electrical conductivity and high thermal conductivity in order to improve shielding performance, heat dissipation, and weight reduction of the connector 3. You may make it form by. In the present embodiment, the first outer housing 7a is made of aluminum.

  The first inner housing 7b is made of an insulating resin such as PPS (polyphenylene sulfide) resin, PPA (polyphthalamide) resin, PA (polyamide) resin, PBT (polybutylene terephthalate).

  The 1st junction terminals 6a-6c are plate-shaped terminals, and consist of metals, such as silver, copper, and aluminum with high electrical conductivity. The first joining terminals 6a to 6c are aligned and held at a predetermined interval in the first outer housing 7a by the first inner housing 7b. Each of the first joint terminals 6a to 6c has some flexibility.

  As shown in FIG. 5, the first insulating members 12a to 12c are fixed to the surfaces of the first connecting terminals 6a to 6c opposite to the surfaces to be bonded to the second connecting terminals 9a to 9c. Moreover, when the 1st junction terminals 6a-6c and the 2nd junction terminals 9a-9c will be in a lamination | stacking state, it is opposite to the surface joined to the 1st junction terminal 6c of the 2nd junction terminal 9c located in the outermost part. The second insulating member 12d is fixed to the inner surface of the first outer housing 7a so as to face the side surface. Each of the insulating members 12a to 12d is fixed at a position protruding to the tip side of the first joint terminals 6a to 6c, and the second joint terminal 9a is improved in order to improve the insertability of the second joint terminals 9a to 9c. The corners on the side where 9c are inserted and removed are chamfered. In addition, in FIG. 5, the structure of the 1st insulation members 12a-12c is simplified and the 1st insulation members 12a-12c are drawn similarly.

  The connecting member 13 is made of a metal (for example, SUS, iron, copper alloy, or the like) bolt 14 and an insulating resin (for example, an insulating material) on an outer periphery (including a portion penetrating each contact) of the shaft portion 13b. The insulating layer 15 is formed by coating PPS (polyphenylene sulfide) resin, PPA (polyphthalamide) resin, PA (polyamide) resin, PBT (polybutylene terephthalate)). In addition, although not shown in figure, the recessed part which a hexagon wrench (it is also called a hexagon stick spanner) fits is formed in the upper surface of the head 13a of the volt | bolt 14 as the connection member 13. As shown in FIG.

  An elastic member 16 that applies a predetermined pressing force to the first insulating member 12a is provided between the lower surface of the head 13a of the connecting member 13 and the upper surface of the first insulating member 12a immediately below the head 13a. Here, the elastic member 16 is made of a spring made of metal (for example, SUS). The upper surface of the first insulating member 12a with which the lower portion of the elastic member 16 abuts is formed with a concave portion 17 that houses the lower portion of the elastic member 16, and the bottom of the concave portion 17 (that is, the seat portion with which the lower portion of the elastic member 16 abuts ) Is provided with a receiving member 18 made of metal (for example, SUS) that receives the elastic member 16 and prevents damage to the first insulating member 12a.

  The connecting member 13 is inserted into the first outer housing 7a from the surface side (the upper surface side in FIG. 4) of the first connecting terminals 6a to 6c to which the first insulating members 12a to 12c are fixed. The screw part 19 at the tip of 13b is screwed into the screw hole 20 formed in the inner peripheral surface of the first outer housing 7a, so that the head 13a of the connection member 13 is directed toward the tip of the shaft part 13b (in FIG. 4). In other words, the first joint terminals 6a to 6c and the second joint terminals 9a to 9c are collectively fixed at each contact and electrically connected.

  A packing 21 that prevents water from entering the first outer housing 7a is provided on the outer periphery of the head 13a of the connection member 13. In addition, a packing 22 that contacts the inner peripheral surface of the second housing 10 (second outer housing 10a) when both the connector portions 8 and 11 are fitted is provided on the outer peripheral portion of the first outer housing 7a.

  A connection member insertion hole 23 for inserting the connection member 13 is formed in the upper portion (upper side in FIG. 4) of the first outer housing 7a. The connecting member insertion hole 23 is formed in a cylindrical shape, and its cylindrical lower end (the lower side in the figure) is bent inward. The stroke of the connecting member 13 is regulated by the edge peripheral portion of the lower surface of the head portion 13a of the connecting member 13 coming into contact with the bent portion.

  A flange 24 (a mounting hole is omitted) is formed on the outer periphery of the first outer housing 7a for fixing the first connector portion 8 to a housing such as a device (for example, a shield case of a motor or an inverter). When connecting the first connector portion 8 to the motor (or inverter), the flange 24 is fixed to the shield case of the motor (or inverter) and the first connecting terminals 6a to 6c exposed from the first housing 7 are used. Are connected to each terminal of the terminal block installed in the shield case of the motor (or inverter). The first connector portion 8 is attached to both the motor and the inverter, and the second connector portions 11 provided at both ends of the cables 2a to 2c are respectively fitted to the first connector portion 8 so that the wire harness 1 is interposed. Thus, the motor and the inverter are electrically connected.

  Next, the 2nd connector part 11 is demonstrated.

  The second connector portion 11 includes a second housing 10 in which a plurality (three) of second connection terminals (female terminals) 9a to 9c are arranged and stored. The second joint terminals 9a to 9c are electrically connected to the ends of the cables 2a to 2c.

  The second housing 10 includes a second outer housing 10a and an airtight block 35 (to be described later), and a multi-tubular shape (a plurality of tubes) in which the cables 2a to 2c are arranged and held at predetermined intervals in the second outer housing 10a. In a continuous state)).

  The second outer housing 10a is preferably formed of a metal such as aluminum having a high conductivity and a high thermal conductivity in order to improve shielding performance, heat dissipation, and weight reduction of the connector 1. You may make it form by. In the present embodiment, the second outer housing 10a is formed of an insulating resin.

  The second inner housing 10b (including an airtight block 35 described later) is made of an insulating resin such as PPS (polyphenylene sulfide) resin, PPA (polyphthalamide) resin, PA (polyamide) resin, PBT (polybutylene terephthalate). .

  The 2nd junction terminals 9a-9c consist of metals, such as silver, copper, and aluminum with high electrical conductivity. Each of the second joint terminals 9a to 9c holds the cables 2a to 2c (the cables 2a to 2c at positions close to the second joint terminals 9a to 9c) by the second inner housing 10b, whereby the second outer housing 10a Are kept aligned. Each of the 2nd junction terminals 9a-9c has some flexibility.

  As shown in FIG. 6, the second joining terminals 9a and 9c arranged at both ends at the time of alignment are caulked portions 25 for caulking the conductors 4 exposed from the end portions of the cables 2a and 2c, and caulked portions 25, And a U-shaped contact 26 formed integrally. A tapered portion 27 is formed at the distal end portion of the U-shaped contact 26 in order to improve the insertability.

  As shown in FIG. 7, the second joint terminal 9b arranged at the center during alignment is caulked for caulking the conductor 4 exposed from the tip of the cable 2b, like the second joint terminals 9a and 9c. 25 and a U-shaped contact 26 formed integrally with the caulking portion 25, but is bent at the body portion 28 so that the U-shaped contact 26 is positioned on the central axis of the cable 2b. Yes. A tapered portion 27 is formed at the distal end portion of the U-shaped contact 26 in order to improve the insertability.

  When the first connector portion 8 and the second connector portion 11 are fitted, the U-shaped contact 26 is inserted so as to sandwich the shaft portion 13 b of the connecting member 13. In the present embodiment, the second joint terminals 9a and 9c are arranged so that the U-shaped contact 26 comes to the second joint terminal 9b side, and the second joint terminals 9b are arranged at the center during alignment. By bending the body portion 28, the second joining terminals 9a to 9c are arranged at the same interval.

  A braided shield 29 for the purpose of improving the shielding performance is wound around the portions of the cables 2a to 2c drawn out from the second outer housing 10a. The braided shield 29 is in contact with a cylindrical shield body 30 to be described later, and is electrically connected to the first outer housing 7a via the cylindrical shield body 30 (the same potential (GND)).

  Further, a rubber boot 31 for preventing water from entering the second outer housing 10a is put on the outer periphery of the second outer housing 10a from which the cables 2a to 2c are drawn. In FIGS. 1 to 3, the braided shield 29 and the rubber boot 31 are omitted for simplification of the drawing.

  A packing 32 that contacts the inner peripheral surface of the first outer housing 7a is provided on the outer peripheral portion of the second inner housing 10b. That is, the connector 3 has a double waterproof structure with a packing 22 provided on the outer peripheral portion of the first outer housing 7a and a packing 32 provided on the outer peripheral portion of the second inner housing 10b.

  The second outer housing 10a is formed with a connection member operation hole 33 for operating the connection member 13 provided in the first connector portion 8 when the two connector portions 8 and 11 are fitted. .

  In the present embodiment, since the second outer housing 10a is formed of an insulating resin, an aluminum cylinder is formed on the inner peripheral surface on the other end side of the second outer housing 10a in order to improve its shielding performance and heat dissipation. A shield body 30 is provided. The cylindrical shield body 30 has a contact portion 30a that comes into contact with the outer periphery of the first outer housing 7a made of aluminum when the two connector portions 8 and 11 are fitted, and the first outer portion is interposed via the contact portion 30a. The housing 7a is thermally and electrically connected to improve the shielding performance and heat dissipation.

  Next, connection between the first joint terminals 6a to 6c and the second joint terminals 9a to 9c using the connector 3 according to the present embodiment will be described.

  When both the connector parts 8 and 11 are fitted, each of the second joint terminals 9a to 9c is inserted between each of the pair of first joint terminals 6a to 6c and the insulating members 12a to 12d. And by this insertion, while facing each one surface of 1st junction terminal 6a-6c and each one surface of 2nd junction terminal 9a-9c, it is 1st junction terminal 6a-6c, 2nd It will be in the lamination | stacking state by which the joining terminals 9a-9c and the insulation members 12a-12d are arrange | positioned alternately.

  In this state, when the connection member 13 is operated from the connection member operation hole 33 and the screw portion 19 of the connection member 13 is screwed into the screw hole 20 of the first outer housing 7a and tightened, the connection member 13 is screwed. The elastic member 16 pushes the first insulating member 12a, the first insulating member 12b, the first insulating member 12c, and the second insulating member 12d in this order, and each contact is insulated. It is pressed so as to be sandwiched by any two of the members 12a to 12d, and the contacts are in contact with each other while being insulated from each other. At this time, each of the first joint terminals 6a to 6c and each of the second joint terminals 9a to 9c are slightly bent by the press from the insulating members 12a to 12d and are brought into contact in a wide range.

  Next, an airtight holding structure for the second housing 10 and the cables 2a to 2c, which is a characteristic part of the present invention, will be described.

  The wire harness 1 is a part of the second housing 10, more specifically, a part of the second inner housing 10b, and a plurality of cables 2a to 2c are connected to the side to which the plurality of cables 2a to 2c are connected. A plurality of (three) cable insertion holes 34 for inserting 2c into the second housing 10 are provided with an airtight block 35 formed in parallel.

  By the way, between the second inner housing 10b and the second outer housing 10a, airtightness is maintained by the two packings 22 and 32 when both the connector portions 8 and 11 are fitted, and further, the airtightness is also maintained by the rubber boot 31. Therefore, the airtight block 35 is also airtightly provided to the second outer housing 10a.

  The cable insertion hole 34 formed in parallel with the airtight block 35 is formed to have a diameter larger than the diameter of the cables 2a to 2c, and a gap 36 of a predetermined distance is formed between the cables 2a to 2c and the airtight block 35. Is done. The gap 36 is a space for pouring the molten resin, which is the molten member 37, when the melting member 37, which will be described later, is melted, and has such a size that the molten resin can be actively poured. It is formed. Moreover, the cable insertion hole 34 is connected so that the adjacent cable insertion holes 34 may overlap. That is, in this embodiment, the gaps 36 formed around the adjacent cables 2a to 2c are communicated with each other.

  In the wire harness 1 according to the present embodiment, a part of the hermetic block 35 is formed to be transparent. Specifically, the airtight block 35 includes an airtight block main body 35a formed so that the cable insertion hole 34 has an opening that opens at the end of the insertion side of the cables 2a to 2c, and the opening of the cable insertion hole 34. It consists of a transparent plate 35b provided on the airtight block main body 35a so as to close the part.

  The reason why a part of the hermetic block 35 is formed to be transparent is to make it possible to visually recognize the state of filling the gap 36 with the molten resin. In the present embodiment, the filling state of the molten resin into the gap 36 can be visually recognized from the outside via the transparent plate 35b.

  The hermetic block main body 35a holds the cables 2a to 2c so as to keep the gap 36 formed around the cables 2a to 2c at a predetermined distance while keeping the distance between the cables 2a to 2c and the airtight block main body 35a constant. A portion 38 is provided. The clamping portion 38 is formed by reducing a part of the cable insertion hole 34 to a diameter substantially the same as the diameter of the cables 2a to 2c (a diameter slightly larger than the diameter of the cables 2a to 2c). In the present embodiment, the clamping portion 38 is formed at a predetermined distance from the rear end of the hermetic block main body 35a, and the gap 36 behind the clamping portion 38 (the gap 36 between the clamping portion 38 and the transparent plate 35b). The molten resin was poured into the tank.

  The airtight block main body 35a is divided into two so as to sandwich the cables 2a to 2c arranged in parallel in the vertical direction (see FIGS. 1 and 3) at least in the clamping portion 38. This is because forming the clamping portion 38 makes it difficult to insert the cables 2a to 2c into the airtight block main body 35a (in the cable insertion hole 34). In the present embodiment, a part (upper right side in FIG. 3) of the rear end portion of the airtight block main body 35a is divided and formed separately so as to divide the two clamping portions 38. Of the divided airtight block main body 35a, the portion fixed to the second outer housing 10a side is divided from the first divided airtight block 35c and the first divided airtight block 35c, and the portion formed separately is second divided airtight. This is referred to as block 35d. Prior to the step of melting the melting member 37, the pair of divided airtight blocks 35c and 35d are welded and integrated by ultrasonic welding in a state where the cables 2a to 2c are sandwiched between the pair of divided airtight blocks 35c and 35d.

  The transparent plate 35b is a plate-like member made of a transparent resin such as an acrylic resin. The transparent plate 35b is divided into two so as to sandwich the cables 2a to 2c, and the rear end surface of the airtight block main body 35a in which both the divided airtight blocks 35c and 35d are integrated (the surface on the insertion side of the cables 2a to 2c). ) R is provided.

  In the present embodiment, the transparent plate 35b is bonded and fixed to the both divided hermetic blocks 35c and 35d in advance with an adhesive (or mechanically fixed with a bolt or the like), and the both divided hermetic blocks 35c and 35d are ultrasonically welded. At the time of welding and integrating, the upper and lower transparent plates 35b are also welded and integrated at the same time. However, after the two divided hermetic blocks 35c and 35d are integrated, it is transparent on the rear end surface R of the hermetic block main body 35a. The plate 35b may be adhesively fixed with an adhesive (or mechanically fixed with a bolt or the like).

  The transparent plate 35b is formed so as to hold the cables 2a to 2c so that the gaps formed around the cables 2a to 2c are kept at a predetermined distance while keeping the distance between the cables 2a to 2c and the airtight block main body 35a constant. Is done. That is, the transparent plate 35b also serves as a clamping part.

  When the transparent plate 35b is fixed to the hermetic block main body 35a, a part of the cable insertion hole 34 is partitioned by the clamping portion 38 and the transparent plate 35b. In the present embodiment, the gap 36 between the clamping part 38 and the transparent plate 35b is filled with molten resin.

  The hermetic block main body 35a of the hermetic block 35 is a portion where a melting member 37 made of resin is inserted, and the melting member 37 is connected to a portion where adjacent cable insertion holes 34 communicate so as not to press the cables 2a to 2c. A first insertion portion 39 for insertion is formed. The 1st insertion part 39 consists of a hole which penetrates the 2nd division | segmentation airtight block 35d in the direction (vertical direction in FIG. 2) perpendicular | vertical to the longitudinal direction of the cables 2a-2c.

  In the present embodiment, since the three cables 2a to 2c are arranged in parallel, two first insertions in total, one between the cable 2a and the cable 2b and one between the cable 2b and the cable 2c. Although the portion 39 is formed, the number of the first insertion portions 39 may be one, or may be three or more. In the present embodiment, the two first insertion portions 39 are formed at the same position in the longitudinal direction of the cables 2a to 2c, but the first insertion portions 39 are disposed at different positions in the longitudinal direction of the cables 2a to 2c. For example, a plurality of first insertion portions 39 may be formed in the longitudinal direction between the cable 2a and the cable 2b. In the present embodiment, since the molten resin is poured into the gap 36 behind the sandwiching portion 38 (between the sandwiching portion 38 and the transparent plate 35b), the first insertion portion 39 is located behind the sandwiching portion 38 (the sandwiching portion 38 and the transparent plate). 35b).

  Further, the hermetic block main body 35 a of the hermetic block 35 has a molten member inserted into the cable insertion hole 34 via the first insertion part 39 on the inner wall surface of the cable insertion hole 34 facing the first insertion part 39. A first pressure receiving portion 40 for pressing the tip of 37 is formed. The first press receiving portion 40 is formed of a flat surface formed perpendicular to the insertion direction (vertical direction in FIG. 2) of the melting member 37 inserted through the first insertion portion 39. In the present embodiment, since two first insertion portions 39 are formed, two first press receiving portions 40 are formed corresponding to both first insertion portions 39. The two first press receiving portions 40 are formed at the same position in the insertion direction of the melting member 37.

  The melting member 37 is formed in a pin shape including a columnar shaft portion 37b inserted into the first insertion portion 39 and a flange-shaped head portion 37a formed at the rear end portion of the shaft portion 37b.

  The melting member 37 is inserted into the first insertion portion 39 at the tip of the shaft portion 37b, and the first press receiving portion is vibrated by the horn while the head 37a is in contact with the horn (not shown). By pressing to 40, the tip portion of the shaft portion 37b is melted by the heat generated between the tip portion of the shaft portion 37b and the first press receiving portion 40. At this time, in order to prevent the first press receiving portion 40 (that is, the airtight block main body 35a) from melting, a resin having a melting temperature lower than the melting temperature of the airtight block main body 35a is used as the melting member 37. Examples of the resin used for the melting member 37 include PPS (polyphenylene sulfide) resin, PPA (polyphthalamide) resin, PA (polyamide) resin, PBT (polybutylene terephthalate), and the like.

  The resin used for the melting member 37 is desirably different from the color of the airtight block main body 35a in order to make it easy to visually recognize the state of filling of the molten resin into the gap 36. In the present embodiment, the color of the airtight block main body 35a is orange and the resin used for the melting member 37 is milky white (or black). However, the color of the resin used for the melting member 37 and the color of the airtight block main body 35a are as follows. A combination of colors that are easy to visually recognize can be arbitrarily selected.

  Since the head 37a of the melting member 37 is a part that contacts the horn when the melting member 37 is melted, heat is generated between the horn and the head 37a when the melting member 37 is melted, In order to prevent melting, it is formed in a size (area) that can ensure a sufficient contact area with the horn.

  The shaft portion 37b of the melting member 37 is formed to have a diameter equal to or less than the interval between the adjacent cables 2a to 2c. In the present embodiment, the shaft portion 37b is formed to have a diameter substantially equal to the interval between the adjacent cables 2a to 2c. Therefore, when the melting member 37 is inserted into the first insertion portion 39, the shaft portion 37b comes into contact with the cables 2a to 2c (sheath 5), but the pressing direction of the melting member 37 is the parallel direction of the cables 2a to 2c. Therefore, the sheath 5 is not pressed and heat is not generated between the shaft portion 37b and the sheath 5 to melt the sheath 5.

  The length of the shaft portion 37b of the melting member 37 is set so that the amount of molten resin to be melted is such that the gap 36 between the sandwiching portion 38 and the transparent plate 35b can be completely filled, or slightly larger. Is done. In the present embodiment, two first insertion portions 39 and two first pressing receiving portions 40 are formed and two melting members 37 are used. These two melting members 37 have substantially the same length. Formed. In order to supply the molten resin evenly to the gap 36, it is desirable to melt the two melting members 37 at substantially the same speed, but by forming the two melting members 37 to have substantially the same length, This is because the two melting members 37 can be melted at substantially the same speed with a simple configuration in which the two melting members 37 are pressed simultaneously. In order to press the two melting members 37 at the same time, for example, a single common horn may be used.

  In the present embodiment, the melting member 37 is formed in a pin shape, but the shape of the melting member 37 is not limited to this, and for example, the melting member 37 may be formed in a plate shape. Further, the shaft portion 37b of the melting member 37 may be formed in a shape (tip tapered shape) whose tip is gradually tapered so that the tip is easily melted.

  Next, a method for manufacturing the wire harness 1 will be described.

  When manufacturing the wire harness 1, first, the end portions of the cables 2a to 2c provided with the second joining terminals 9a to 9c are inserted into the cable insertion holes 34 of the first divided hermetic block 35c, and the second inner terminal With the housing 10b, the cables 2a to 2c are aligned and held at a predetermined interval in the second outer housing 10a.

  Thereafter, the second divided hermetic block 35d previously attached with the transparent plate 35b is ultrasonically welded to the first divided hermetic block 35c previously attached with the transparent plate 35b, and the pair of divided hermetic blocks 35c and 35d are integrated. At the same time, the upper and lower transparent plates 35b are integrated, and the cables 2a to 2c are held between the holding portion 38 and the transparent plate 35b.

  At this time, the horn is brought into contact with the second divided hermetic block 35d, and the second divided hermetic block 35c is pressed toward the first divided hermetic block 35c while the second divided hermetic block 35d is vibrated by the horn. However, if the second divided airtight block 35d is pressed too much toward the first divided airtight block 35c at the time of ultrasonic welding, the holding portion 38 is pressed by the sheath 5, and the contact portion between the holding portion 38 and the sheath 5 is pressed. Heat may be generated and the sheath 5 may melt. Therefore, in the present embodiment, the pressing by the horn is finished when the clamping portion 38 comes into close contact with the sheath 5 to the extent that the molten resin does not leak.

  After the pair of divided airtight blocks 35c and 35d are integrated by ultrasonic welding, the melting member 37 is inserted into the cable insertion hole 34 through the first insertion portion 39, and the horn is brought into contact with the head portion 37a of the melting member 37. Then, the molten member 37 is pressed against the first press receiving portion 40 while being vibrated. At this time, the two melting members 37 are simultaneously pressed with a horn. When the tip of the shaft portion 37b of the melting member 37 contacts the first press receiving portion 40, heat is generated between the tip of the shaft portion 37b and the first press receiving portion 40, and the tip of the shaft portion 37b of the melting member 37 is reached. The part melts. The molten resin in which the tip of the shaft portion 37b of the melting member 37 is melted is poured into a gap 36 (gap 36 between the sandwiching portion 38 and the transparent plate 35b) formed around the cables 2a to 2c.

  When the melting member 37 is further pressed while being vibrated, the tip portion of the shaft portion 37b is sequentially melted and poured into the gap 36, and the gap 36 between the sandwiching portion 38 and the transparent plate 35b is completely filled with the molten resin. . In addition, the filling state of the molten resin in the gap 36 at this time can be visually recognized through the transparent plate 35b from the insertion side of the cables 2a to 2c of the cable insertion hole 34. At this time, the head portion 37 a of the melting member 37 comes into contact with the peripheral edge of the first insertion portion 39, and the head portion 37 a is also welded to the airtight block 35.

  When the excitation by the horn is stopped in this state, the molten resin covering the periphery of the cables 2a to 2c is hardened, and the melting member 37 and the cables 2a to 2c are in close contact with each other without a gap. Moreover, the molten member 37 and the airtight block main body 35a are integrated as the molten resin hardens. The head portion 37a of the melting member 37 protruding from the airtight block main body 35a may be scraped off or left as it is.

  As described above, an airtight holding structure between the second housing 10 and the cables 2a to 2c is formed, and the wire harness 1 is obtained. In addition, since the assembly procedure of the 1st connector part 8 belongs to a prior art, description is abbreviate | omitted here.

  As described above, in the wire harness 1 according to the present embodiment, a part of the airtight block 35 is formed to be transparent so that the filling state of the molten resin in the gap 36 can be visually confirmed. Inserting into the cable insertion hole 34 via the first insertion portion 39 and pressing the melting member 37 against the first pressure receiving portion 40 while oscillating the melting member 37, the tip of the melting member 37 contacting the first pressure receiving portion 40 The molten resin as the molten member 37 is poured into the gap 36 between the cables 2a to 2c and the airtight block 35, and the periphery of the cables 2a to 2c is covered with the molten resin, so that the airtight block 35 and the cable Airtightness with 2a to 2c is maintained.

  By forming a part of the hermetic block 35 transparent, it is possible to visually check the filling state of the molten resin in the gap 36 from the outside. Therefore, it can be confirmed that the molten resin is completely filled in the gap 36, and it is possible to make it difficult to cause poor filling of the molten resin.

  Further, in the wire harness 1, the molten resin obtained by melting the melting member 37 is poured into the gap between the cables 2 a to 2 c and the airtight block 35 (airtight block main body 35 a), so that a gap is formed around the cables 2 a to 2 c. It is possible to integrate the hermetic block 35 and the molten member 37 that are covered with the molten resin and hermetically provided with respect to the second housing 10 without any gap, and the second housing 10 and the cables 2a to 2c can be integrated. It becomes possible to maintain sufficient airtightness.

  In the wire harness 1, the first insertion portion 39 is formed so that the melting member 37 is inserted into a portion where the adjacent cable insertion holes 34 communicate with each other so that the cables 2 a to 2 c are not pressed. It is possible to sufficiently maintain the airtightness between the airtight block 35 and the cables 2a to 2c without melting the sheath 5 of ~ 2c.

  Further, in the wire harness 1, the adjacent cable insertion holes 34 communicate with each other so as to overlap each other (see FIGS. 2 and 9), so that the distance between the cables 2 a to 2 c can be reduced and the pitch of the cables 2 a to 2 c is further reduced. This contributes to the miniaturization of the wire harness 1.

  Furthermore, in the wire harness 1, since the color of the resin used for the melting member 37 is different from the color of the airtight block 35, it is easy to visually recognize the filling state of the molten resin, and as a result, the work efficiency in the resin filling process Can be improved.

  Moreover, in the wire harness 1, since the melting temperature of the melting member 37 is set lower than the melting temperature of the airtight block main body 35a, when the melting member 37 is melted, the airtight block 35 is melted and a problem occurs. Can be prevented.

  Furthermore, in the wire harness 1, since the clamping part 38 which clamps the cables 2a-2c is formed in the airtight block main body 35a, the gap 36 formed around the cables 2a-2c can be held at a predetermined distance. Thus, the molten resin can be reliably supplied around the cables 2a to 2c. That is, problems such as a part of the cables 2a to 2c not being covered with the molten resin do not occur.

  Moreover, in the wire harness 1, since the airtight block main body 35a is divided into two so as to sandwich the cables 2a to 2c arranged in parallel from above and below, the cables 2a to 2c can be easily placed in the second housing 10. It can be inserted into (in the cable insertion hole 34).

  Furthermore, in the wire harness 1, the two melting members 37 are pressed at the same time and the two melting members 37 are melted at substantially the same speed, so that the molten resin can be supplied uniformly to the gap 36. .

  Next, another embodiment of the present invention will be described.

  The wire harness 80 shown in FIGS. 8 to 10 has basically the same configuration as that of the wire harness 1 described with reference to FIGS. 1 to 4, but differs in the position where the melting member 37 is inserted.

  Specifically, in the wire harness 80, the molten member 37 is inserted into the hermetic block 35 and communicates with the cable insertion holes 34 located on both sides of the plurality of cables 2 a to 2 c arranged in parallel. And forming a second pressure receiving portion 82 for pressing the tip of the melting member 37 inserted into the second insertion portion 81 on the inner wall surface of the second insertion portion 81. Yes. That is, the wire harness 80 is configured to form the second insertion portion 81 and the second press receiving portion 82 instead of the first insertion portion 39 and the first press receiving portion 40 of the wire harness 1.

  In this Embodiment, the 2nd insertion part 81 is formed in the position away from the cables 2a and 2c arrange | positioned at the both sides of a parallel direction by predetermined spacing so that the fusion | melting member 37 may not contact cable 2a-2c. . In addition, the rear-end part 35c of the airtight block 35 which forms the 2nd insertion part 81 is formed in the flange shape expanded in the parallel direction of cable 2a-2c.

  The second insertion portion 81 communicates with the gap 36 around the cables 2 a to 2 c through a molten resin introduction hole 83 that is a part of the second insertion portion 81. The molten resin introduction hole 83 is formed in a substantially rectangular shape in a sectional view, and more specifically, the inner wall surface of the second insertion hole 81, more specifically, the inner wall surface of the molten resin introduction hole 83 presses the melting member 37. It becomes the press receiving part 82.

  According to the wire harness 80, similarly to the wire harness 1, the molten resin obtained by melting the melting member 37 can be poured into the gap 36 between the cables 2a to 2c and the airtight block 35, and the cables 2a to 2c Without melting the sheath 5, the airtight block 35 and the cables 2a to 2c can be sufficiently kept airtight.

  Further, in the wire harness 80, as in the case of the wire harness 1, a part of the hermetic block 35 (a portion of the transparent plate 35 b) is formed transparent, so that it is possible to visually check the filling state of the molten resin in the gap 36. It is possible to make it difficult to cause poor filling of the molten resin.

  The present invention is not limited to the embodiments described above, and various modifications can be made without departing from the spirit of the present invention.

  For example, the case where only the first insertion portion 39 and the first pressure receiving portion 40 are formed in the wire harness 1 and only the second insertion portion 81 and the second pressure receiving portion 82 are formed in the wire harness 80 has been described. However, you may make it form both the 1st insertion part 39 and the 1st press receiving part 40, and the 2nd insertion part 81 and the 2nd press receiving part 82. FIG.

  Moreover, in the said embodiment, although the airtight block 35 was made into a part of 2nd inner housing 10b, you may form so that the airtight block 35 may become a part of 2nd outer housing 10a. The airtight block 35 may be formed separately from the second housing 10, and the airtight block 35 formed separately may be provided airtight with respect to the second housing 10.

  Furthermore, in the above-described embodiment, when the second divided hermetic block 35d is ultrasonically welded to the first divided hermetic block 35c, the cable 2a does not leak the molten resin from the hermetic block main body 35a at the clamping portion 38. When the horn is in close contact with the sheath 5 ˜2c, the pressing by the horn is terminated. However, in order to completely prevent the sheath 5 from melting, a metal, Alternatively, a protective member made of a resin having a melting temperature higher than that of the airtight block main body 35a may be provided so that the airtight block 35 and the sheath 5 do not directly contact each other.

  In the above embodiment, when the gap between the sandwiching portion 38 and the transparent plate 35b is completely filled with the molten resin, the vibration / pressurization of the melting member 37 by the horn is stopped. After completely filling the gap 36 between the plates 35b with the molten resin, the molten member 37 is further pressed and melted while vibrating with a horn, thereby increasing the internal pressure of the molten resin filled in the gap 36. The sheath 5 of the cables 2a to 2c may be pressed with a molten resin filled in the gap 36 (a molten resin flowing into the gap 36). Thereby, it becomes possible to improve airtightness more.

  Furthermore, in the above embodiment, the sandwiching portion 38 is formed and the molten resin is poured into the gap 36 between the sandwiching portion 38 and the transparent plate 35b. However, the present invention is not limited to this, and the sandwiching portion 38 may be omitted. . When the clamping portion 38 is omitted, since the molten resin flows into the second joining terminals 9a to 9c, the inner pressure of the molten resin cannot be increased to press the sheath 5, but the cables 2a to 2c The airtightness between the airtight blocks 35 can be sufficiently maintained.

  In the above embodiment, the melting temperature of the melting member 37 is set lower than the melting temperature of the airtight block main body 35a. However, the melting member 37 and the airtight block main body 35a are formed of the same material or a material having a similar melting temperature. In addition, a metal member or a hardly meltable member made of a resin having a melting temperature higher than that of the melting member 37 is provided in the pressure receiving portion (the first pressure receiving portion 40 and / or the second pressure receiving portion 82) that presses the melting member 37. Thus, melting of the airtight block main body 35a may be suppressed. In particular, by forming the melting member 37 and the airtight block main body 35a from the same material, the molten member 37 and the airtight block main body 35a can be more firmly integrated when the molten resin is solidified, thereby improving the airtightness. It becomes possible.

  Furthermore, in the above embodiment, the case where the transparent plate 35b is fixed to the airtight block main body 35a has been described. However, after the transparent plate 35a is detachably provided on the airtight block main body 35a and the molten resin is solidified. The transparent plate 35b may be removed. By removing the transparent plate 35b after the molten resin is solidified, the airtight holding structure can be further reduced in size, and as a result, the entire wire harness 1 can be further reduced in size.

  In the above embodiment, the case where the gap 36 is completely filled with the molten resin has been described. However, the present invention is not limited to this, and the gap 36 is not completely filled, and there are some gaps. Even in this case, it is included in the scope of the technical idea of the present invention.

  Moreover, in the said embodiment, although the airtight holding structure between the 2nd housing 10 and the cables 2a-2c in the 2nd connector part 11 was demonstrated, when a cable is connected to the 1st connector part 8, The present invention can also be applied to an airtight holding structure between the first housing 7 and the cable in the one connector portion 8.

  Moreover, in the said embodiment, although the center conductor 4 in cable 2a-2c was substantially circular shape by cross-sectional view, even if it is other shapes, for example, flat shape, it is possible to apply this invention. is there.

  Finally, as a supplement, in the above embodiment, an ultrasonic welding operation for integrating the pair of divided airtight blocks 35c and 35d, and an ultrasonic welding for filling the gap 36 of the airtight block 35 with the molten resin of the melting member 37. Regarding the work, in both cases, the movement of the horn can be unidirectional from the top to the bottom as shown in FIG. This has a remarkable and advantageous effect of being easy to manufacture.

DESCRIPTION OF SYMBOLS 1 Wire harness 2a-2c Cable 3 Connector 4 Center conductor 5 Sheath 6a-6c 1st junction terminal 7 1st housing 8 1st connector part 9a-9c 2nd junction terminal 10 2nd housing 11 2nd connector part 34 Cable insertion hole 35 Airtight block 35a Airtight block body 35b Transparent plate 36 Gap 37 Melting member 38 Nipping part 39 First insertion part 40 First press receiving part

Claims (13)

In a wire harness comprising a plurality of cables arranged in parallel and a connector having a housing to which ends of the plurality of cables are connected,
The housing has an airtight block in which a plurality of cable insertion holes for inserting the plurality of cables into the housing are formed in parallel on a side to which the plurality of cables are connected,
Each cable insertion hole is formed so as to have a gap of a predetermined distance between the cable and the airtight block, and communicates so that the adjacent cable insertion holes overlap,
The airtight block is
A first insertion portion for inserting a melting member made of resin into a portion where the adjacent cable insertion holes communicate with each other so as not to press the cable;
A first pressure receiving portion for pressing a tip of the melting member inserted into the cable insertion hole via the first insertion portion to an inner wall surface of the cable insertion hole facing the first insertion portion; Form the
In addition, in order to make the filling state of the molten resin into the gap visible, a part of the airtight block is formed transparently,
The melting member is inserted into the cable insertion hole via the first insertion portion, and the melting member is pressed against the first pressure receiving portion while being vibrated, thereby contacting the first pressure receiving portion. The airtight block and the cable are kept airtight by melting the tip of the melting member, pouring the molten resin, which is the molten member, into the gap, and covering the periphery of the cable with the molten resin. The wire harness characterized by doing. The airtight block further includes:
A second insertion portion that is a portion into which the melting member is inserted and communicates with the cable insertion holes located on both sides of the plurality of cable insertion holes arranged in parallel;
Forming, on the inner wall surface of the second insertion portion, a second pressure receiving portion for pressing the tip of the melting member inserted into the second insertion portion;
The melting member is further inserted into the second insertion portion, and the melting member is pressed against the second press receiving portion while being vibrated, whereby the tip of the melting member that comes into contact with the second press receiving portion is obtained. The wire harness according to claim 1, wherein a melted resin that is the melted molten member is poured into the gap. In a wire harness comprising a plurality of cables arranged in parallel and a connector having a housing to which ends of the plurality of cables are connected,
The housing has an airtight block in which a plurality of cable insertion holes for inserting the plurality of cables into the housing are formed in parallel on a side to which the plurality of cables are connected,
Each cable insertion hole is formed so as to have a gap of a predetermined distance between the cable and the hermetic block, and communicates so that the adjacent cable insertion holes overlap with each other.
A second insertion portion that is a portion into which a melting member made of resin is inserted and communicates with the cable insertion holes located on both sides of the plurality of cable insertion holes arranged in parallel;
Forming, on the inner wall surface of the second insertion portion, a second pressure receiving portion for pressing the tip of the melting member inserted into the second insertion portion;
In addition, in order to make the filling state of the molten resin into the gap visible, a part of the airtight block is formed transparently,
The melting member is inserted into the second insertion portion, and the tip of the melting member that contacts the second press receiving portion is melted by pressing the melting member while pressing the melting member. The molten resin, which is the molten member, is poured into the gap and the periphery of the cable is covered with the molten resin, so that the hermetic block and the cable are kept airtight. Wire harness to be used. The airtight block is
An airtight block body formed so that the cable insertion hole has an opening that opens at an end of the cable on the insertion side;
It consists of a transparent plate provided in the airtight block main body so as to close the opening of the cable insertion hole,
The wire harness according to any one of claims 1 to 3, wherein a state of filling the molten resin into the gap is visually recognized through the transparent plate.   The wire harness according to claim 4, wherein the color of the resin used for the melting member is different from the color of the hermetic block main body. The airtight block body is made of resin,
The wire harness according to claim 4 or 5, wherein a melting temperature of the melting member is lower than a melting temperature of the airtight block body. The airtight block body is made of resin,
The melting member and the airtight block main body are made of the same material, or a material having a close melting temperature,
The wire harness according to any one of claims 4 to 6, wherein a metal member or a hardly meltable member made of a resin having a melting temperature higher than that of the melting member is provided in the press receiving portion that presses the melting member. The hermetic block main body has a holding portion for holding the cable so as to hold the gap formed around the cable at a predetermined distance.
The wire harness according to any one of claims 4 to 7, wherein the molten resin is poured into the gap between the sandwiching portion and the transparent plate.   After completely filling the gap between the sandwiching part and the transparent plate with the molten resin, the molten member is pressed and melted to flow into the gap between the sandwiching part and the transparent plate. The wire harness according to claim 8, wherein the cable is pressed with a molten resin. The airtight block body is
It consists of a pair of split airtight blocks made of resin divided into two so as to sandwich the plurality of cables arranged in parallel from above and below,
The wire harness according to any one of claims 4 to 9, wherein the pair of divided airtight blocks are welded and integrated by ultrasonic welding in a state where the plurality of cables are sandwiched between the pair of divided airtight blocks. A plurality of the insertion portion and the pressure receiving portion are formed in the longitudinal direction of the cable, and a melting member is inserted into each of the plurality of insertion portions,
The wire harness according to claim 1, wherein the plurality of melting members inserted into the plurality of insertion portions are pressed simultaneously. In a method for manufacturing a wire harness comprising a plurality of cables arranged in parallel and a connector having a housing to which ends of the plurality of cables are connected,
The housing has an airtight block in which a plurality of cable insertion holes for inserting the plurality of cables into the housing are formed in parallel on a side to which the plurality of cables are connected,
Each cable insertion hole is formed so as to have a gap of a predetermined distance between the cable and the airtight block, and communicates so that the adjacent cable insertion holes overlap,
The airtight block is
A first insertion portion for inserting a melting member made of resin into a portion where the adjacent cable insertion holes communicate with each other so as not to press the cable;
A first pressure receiving portion for pressing a tip of the melting member inserted into the cable insertion hole via the first insertion portion to an inner wall surface of the cable insertion hole facing the first insertion portion; Form the
In addition, in order to make the filling state of the molten resin into the gap visible, a part of the airtight block is formed transparently,
The melting member is inserted into the cable insertion hole via the first insertion portion, and the melting member is pressed against the first pressure receiving portion while being vibrated, thereby contacting the first pressure receiving portion. The airtight block and the cable are kept airtight by melting the tip of the melting member, pouring the molten resin, which is the molten member, into the gap, and covering the periphery of the cable with the molten resin. A method of manufacturing a wire harness, characterized in that it is configured as described above. In a method for manufacturing a wire harness comprising a plurality of cables arranged in parallel and a connector having a housing to which ends of the plurality of cables are connected,
The housing has an airtight block in which a plurality of cable insertion holes for inserting the plurality of cables into the housing are formed in parallel on a side to which the plurality of cables are connected,
Each cable insertion hole is formed so as to have a gap of a predetermined distance between the cable and the airtight block, and communicates so that the adjacent cable insertion holes overlap,
The airtight block is
A second insertion portion that is a portion into which a melting member made of resin is inserted and communicates with the cable insertion holes located on both sides of the plurality of cable insertion holes arranged in parallel;
Forming, on the inner wall surface of the second insertion portion, a second pressure receiving portion for pressing the tip of the melting member inserted into the second insertion portion;
In addition, in order to make the filling state of the molten resin into the gap visible, a part of the airtight block is formed transparently,
The melting member is inserted into the second insertion portion, and the tip of the melting member that contacts the second press receiving portion is melted by pressing the melting member while pressing the melting member. The molten resin, which is the molten member, is poured into the gap and the periphery of the cable is covered with the molten resin, so that the hermetic block and the cable are kept airtight. A method of manufacturing a wire harness.

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