JP2014078431A - Method of manufacturing connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a housing which can be reduced in size and in which an arrangement pitch of an electric wire can be narrowed, a connector having the housing, and a method of manufacturing the connector.SOLUTION: A method of manufacturing a connector 1 performs an electric wire insertion process for inserting an electric wire tip 2T provided with a conductor tip 3T from which a conductor 3 is exposed by peeling insulation coating 4 on a tip side of an electric wire 2 in which the conductor 3 is coated with the insulation coating 4 to an electric wire insertion hole 60 formed so that the electric wire 2 can be inserted into a housing 10 for accommodating the tip side of the electric wire 2 to connect the electric wire 2 to a connection mate part Ma via a terminal fitting 12. After the electric wire insertion process, a crimp process for crimping and connecting the terminal fitting 12 to the electric wire tip 2T gone through the electric wire insertion hole 60 after inserting it to the electric wire insertion hole 60 is performed.

Description

  The present invention relates to a connector provided with a housing that accommodates a terminal fitting that is crimped and connected to a conductor tip portion where an insulating coating on the tip end side of an electric wire is peeled to expose an internal conductor, and a method of manufacturing the connector.

  The above-described connector is usually accommodated in a state in which a terminal fitting of a terminal-attached electric wire that is crimped to the distal end side of the electric wire is disposed in a terminal insertion hole formed in a synthetic resin housing.

For example, the “waterproof connector” disclosed in Patent Document 1 is one such connector.
In the waterproof connector disclosed in Patent Document 1, the terminal fitting of the electric wire with terminal is assembled by inserting the terminal fitting of the electric wire with terminal into the terminal accommodating chamber of the housing while inserting the terminal fitting of the cover integrally assembled with the housing. It can be housed inside the housing.

  However, in the case of a structure in which the terminal fitting of the electric wire with terminal is inserted into the terminal insertion portion of the housing while being inserted through the terminal insertion portion, the terminal insertion portion allows insertion including the terminal fitting in the electric wire with terminal in the entire longitudinal direction. It is necessary to secure the inner diameter to be formed.

  For this reason, it is necessary to make the housing large in correspondence with such a terminal insertion portion. However, in this case, the housing is downsized in response to the recent complexity and advancement of electric and electronic circuits, and the terminal The arrangement pitch could not be reduced.

JP 2003-346969 A

  An object of the present invention is to provide a housing that can be made compact and can reduce the pitch of electric wires, a connector that includes the housing, and a method for manufacturing the connector.

  According to the present invention, the terminal fitting is crimped to at least the conductor tip at the wire tip provided with the conductor tip exposed by stripping off the insulation coating on the tip of the electric wire coated with the conductor. In the wire insertion hole formed by penetrating the housing so that the wire inserted from one end side of the housing that houses the tip side of the wire and the other end side in the insertion direction is inserted, A method of manufacturing a connector for connecting a wire to a connection partner part via a terminal fitting, after the wire insertion step, from the other end side of the wire insertion hole. Performing the crimping step of crimping and connecting the terminal fitting to the wire tip that has come out, and after the crimping step, the wire tip from the other end of the wire insertion hole And performing wire arrangement step of arranging in position back in the direction opposite to the insertion direction.

  Usually, the terminal fitting is provided with a connection terminal portion, and the connection terminal portion is formed larger than the electric wire in order to connect to the connection counterpart portion. In the connector manufacturing method of the present invention, before the crimping step of crimping and connecting such a terminal fitting to the wire tip, the wire tip that is not crimped to the terminal fitting in the wire insertion step, to the wire insertion hole, Inserting from one end side in the insertion direction, and in the crimping step, a terminal fitting is crimped and connected to the tip end of the electric wire that is pulled out from the other end side.

  Thus, by performing the crimping step after the wire insertion step, the wire insertion hole does not need to be formed with an inner diameter into which the entire connection fitting can be inserted, and corresponds to the inner diameter into which only the wire can be inserted. Can be formed. That is, it can be formed in a small diameter compared with the case where an electric wire with a terminal fitting provided with a terminal fitting is inserted.

  Therefore, the housing size can be reduced. Furthermore, the arrangement pitch of the electric wires can be narrowed in response to the demands for more complicated and sophisticated electric circuits and electric parts.

  Here, when the connector of the present invention is a male connector, the connection partner portion indicates a female connector that can be connected to the male connector. Similarly, in the case of a female connector, the female connector The male connector that can be connected to is shown. Alternatively, for example, a connector connection partner such as a connector connection port of an electric device is shown.

  As an aspect of the present invention, a coating peeling step for forming a conductor tip portion where the conductor coating is exposed by peeling off the insulating coating on the tip side of the electric wire can be performed after the electric wire insertion step.

  As described above, by performing the coating peeling step after the wire insertion step, in the wire insertion step, it is possible to insert the unexposed conductor tip portion covered with the insulating coating into the insertion hole. Even when the wire insertion hole is formed with a small diameter, the conductor tip is bent by the contact of the conductor tip with the inner surface of the wire insertion hole in the insertion process of inserting the wire tip into the wire insertion hole. Can be smoothly inserted without deformation of the wire or unraveling the wire constituting the conductor tip.

  Moreover, as an aspect of the present invention, an electric wire crimping portion is formed at the electric wire distal end portion by crimping the electric wire distal end portion with the crimping fitting, and the electric wire insertion hole is located on the base side from the electric wire crimping portion in the longitudinal direction of the electric wire. The wire insertion hole body space for arranging the wire crimping portion and the wire crimping portion placement space for arranging the wire crimping portion are connected to each other so that the wire insertion hole body space cannot be inserted into the crimping fitting. Formed in a smaller diameter than the wire crimping portion arrangement space, forming a step portion at the communication portion with the wire insertion hole body space in the wire crimping portion placement space, and as the wire placement step, the base end of the wire crimping portion A terminal positioning step of positioning the wire tip with respect to the housing by bringing the portion into contact with the stepped portion can be performed.

  According to the above-described configuration, since the crimping process is performed after the wire insertion process, in the crimping process, it is necessary to crimp the crimping metal fitting to the wire tip with the wire tip protruding from the housing. For this reason, although the said electric wire front-end | tip part will be in the state protruded with respect to the predetermined position of a housing, the electric wire front-end | tip part is positioned by making the said electric wire crimping part contact | abut to a step part as a terminal positioning process after that. Can be accommodated in the housing at a predetermined position.

Moreover, as an aspect of the present invention, a filling step of filling the wire crimping portion arrangement space with a filler can be performed after the terminal positioning step.
According to the configuration described above, by filling the wire crimping portion arrangement space with the filler, the wire crimping portion can be fixed in a state of being positioned on the stepped portion, and the connection partner portion can be connected through the wire insertion hole. It is possible to prevent water from entering the connection portion.

  In particular, since the inner diameter of the wire insertion hole can be reduced as described above by performing the crimping step after the wire insertion step, for example, there is no gap between the wire insertion hole and the inserted wire. It can be formed with an inner diameter. Thereby, since it is sufficient to fill the filler only in the electric wire crimping portion arrangement space, the amount of filler used can be greatly reduced.

As an aspect of the present invention, a cover attaching step for attaching a cover for covering the housing to the outside of the housing can be performed.
The cover is preferably a metal cover made of metal.

  According to the above-described configuration, the strength against external force can be reinforced by attaching the cover to the housing. In particular, by attaching a metal cover, an electromagnetic shielding effect can also be achieved.

  In addition, the housing can be reduced in size by performing the crimping step after the wire insertion step as described above, but the metal cover attached to the reduced housing is also reduced in size accordingly. You can plan.

  In addition, it is preferable to perform a cover attachment process before the said electric wire insertion process. By performing the cover attaching step before the electric wire inserting step, the electric wire does not get in the way and the cover can be easily attached to the housing.

  The present invention relates to a terminal fitting that is crimp-connected to at least the conductor tip at a wire tip having a conductor tip that exposes the conductor by peeling off the insulating coating on the tip of the electric wire coated with a conductor. And a housing that is accommodated in a state in which the end portion of the electric wire is inserted into an electric wire insertion hole formed through the connector, and the electric wire can be connected to a connection target portion via the terminal fitting. Then, an electric wire insertion portion is formed in which the electric wire distal end portion is crimped to the electric wire distal end portion by the crimp fitting, and the electric wire insertion hole is disposed on the base side from the electric wire distal end portion in the longitudinal direction of the electric wire. The hole body space and the wire crimping portion placement space in which the wire crimping portion is placed are connected to each other, the wire crimping portion placement space is filled with a filler, and the wire insertion hole body space is That it has a smaller diameter than the wire crimping portion so as to disable the insertion of the crimp fitting featuring.

  The wire insertion hole main body space is not particularly limited as long as it is formed to have a smaller diameter than the wire crimping portion, but it is preferable that the outer peripheral surface of the insulation coating of the inserted wire is formed so as to be able to contact.

  According to the above-described configuration, the wire insertion hole main body space is formed in a smaller diameter than the wire crimping portion as described above, so that the connector can be made compact and the terminal arrangement can be narrowed.

  As an aspect of the present invention, a stepped portion capable of contacting the proximal end portion of the wire crimping portion can be formed in a communication portion with the wire insertion hole main body space in the wire crimping portion arrangement space.

  According to the configuration described above, the wire crimping portion can be arranged in a positioned state in the wire crimping portion arrangement space by bringing the proximal end portion of the wire crimping portion into contact with the stepped portion.

  Further, as an aspect of the present invention, the wire tip portion is formed of a coating tip portion on the tip side of an insulation coating and the conductor tip portion, and the wire crimp portion is a sheath crimp portion obtained by crimping the insulation coating; and the conductor It is possible to form the stepped portion so that the base end portion of the covering crimping portion can be brought into contact with the conductor crimping portion to which the coating is crimped.

  According to the structure mentioned above, the base end part of the said covering crimping | compression-bonding part is made to contact | abut more reliably with respect to the said step part by providing the said crimping | compression-bonding part in the said crimping | compression-bonding part with a large diameter with respect to an electric wire. And can be positioned firmly.

  The present invention relates to a wire tip portion having a conductor tip portion that exposes the conductor by peeling off the insulation coating on the tip side of an electric wire coated with a conductor, and at least the conductor tip portion of the conductor tip portion. A housing in which a wire fitting hole is inserted and a wire insertion hole for inserting a wire distal end portion is formed, and the wire insertion hole is disposed on the base side of the wire distal end portion in the longitudinal direction of the wire. The wire insertion hole main body space and the electric wire crimping portion arrangement space in which the electric wire crimping portion in which the crimping fitting is crimped to the wire distal end portion are formed in communication with each other, and the electric wire insertion hole main body space is It is characterized in that it is formed with a diameter smaller than that of the wire crimping part so that the crimping fitting cannot be inserted.

  According to the above-described configuration, since the wire insertion hole main body space is formed with a smaller diameter than the wire crimping portion, the housing can be made compact and the terminal arrangement can be narrowed.

The present invention is characterized in that it is a cover that can be attached to the outside of the housing described above.
By attaching the cover described above to the housing, the strength against external force can be reinforced. In particular, by attaching a metal cover, an electromagnetic shielding effect can also be achieved.

  In addition, the housing can be reduced in size by performing the crimping step after the wire insertion step as described above, but the metal cover attached to the reduced housing is also reduced in size accordingly. You can plan.

  According to the present invention, it is possible to provide a housing that can be made compact and can reduce the arrangement pitch of electric wires, a cover attached to the housing, a connector provided with the housing, and a method for manufacturing the connector. be able to.

The perspective view which looked at the connector of this embodiment from the one end side. The perspective view which looked at the connector from the other end side. The disassembled perspective view which shows a housing and a metal cover. The rear view which looked at the housing from the other end. The longitudinal end view of a connector. The horizontal end view of a connector. Explanatory drawing of the assembly method of a connector. Explanatory drawing of the assembly method of a connector. Explanatory drawing of the assembly method of a connector. Explanatory drawing of the assembly method of a connector. Explanatory drawing of the assembly method of a connector. Explanatory drawing of the assembly method of a connector. Action | operation explanatory drawing of a connector.

An embodiment of the present invention will be described below with reference to the drawings.
1 shows a perspective view of the connector 1 as seen from one end side, FIG. 2 shows a perspective view of the connector 1 as seen from the other end side, FIG. 3 shows an exploded perspective view showing the housing 10 and the metal cover 11, FIG. 4 shows a rear view of the housing 10 as viewed from the other end side. FIG. 5 shows a vertical end view of the connector 1, and FIG. 6 shows a horizontal end view of the connector 1. In the present specification, the end on the terminal fitting 12 side is defined as one end, and the end on the opposite side of the electric wire 2 is defined as the other end. Moreover, in FIG. 1, FIG. 2, the boot 8 is shown in the permeation | transmission state with the dashed-two dotted line for convenience of illustration.

The connector 1 is for connecting the electric wire 2 for large current / high voltage to an electric device M (see FIG. 6) such as a motor mounted on an electric vehicle, for example.
The case of the electric device M shown in FIG. 6 is provided with an insertion port Ma and a bolt hole Mb. As shown in FIG. 6, the connector 1 is inserted into the insertion port Ma, and a bolt hole of a metal cover 11 described later. The electric device M and the electric wire 2 are connected by inserting the bolt 6 through 11c and the bolt hole Mb of the electric device M and fastening both.

  As shown in FIGS. 1 to 6, the connector 1 includes a flexible resin housing 10, a cylindrical metal cover 11 that covers the other end of the housing 10, and one end of the housing 10 from the outside. A plurality (here, three) of terminal fittings 12 exposed to each other, and a plurality (here, three) of wire crimping portions to be described later formed individually on one end side of the housing 10 corresponding to the plurality of terminal fittings 12 It is comprised with the filler 13 with which the space 62 was filled.

  As shown in FIGS. 1, 2, 5, and 6, the connector 1 is equipped with a plurality of (three in this case) terminal-attached electric wires 2. As for the electric wire 2 with a terminal, the front-end | tip part (terminal part) is crimped | bonded to the terminal metal fitting 12 accommodated in the connector 1 so that it may each mention later.

  By the way, the electric wire 2A in the electric wire 2 with a terminal constitutes an electric wire tip portion 2T which is a portion to be crimped to the terminal fitting 12 on the tip side (terminal side) of the electric wire 2A (see FIG. 6). The wire tip portion 2T is composed of a conductor tip portion 3T and a sheath tip portion 4T. The conductor tip portion 3T is a conductor exposed portion in which the conductor 3 is exposed by peeling off the insulation coating 4 on the tip side where the conductor 3 is coated with the insulation coating 4. It is. The covering tip portion 4T is a portion corresponding to the rear side of the conductor tip portion 3T in the tip side portion of the electric wire 2.

As shown in FIG. 6, the terminal fitting 12 in the terminal-attached electric wire 2 includes a connection terminal portion 12 a and a barrel portion 12 </ b> B, and is arranged in series along the longitudinal direction.
12 A of connection terminal parts are terminals connected with respect to connection object parts, such as insertion port Ma provided in the case of the electric equipment M (refer FIG. 6).
The barrel portion 12B is formed by arranging an insulation barrel portion 12Ba for crimping the coated tip portion 4T and a wire barrel portion 12Bb for crimping the conductor tip portion 3T in series.

  Moreover, the electric wire crimping | compression-bonding part X is comprised in the electric wire tip part 2T as a crimping | compression-bonding part which crimped | bonded this electric wire tip part 2T with the barrel part 12B.

  The wire crimping portion X is composed of a coating crimping portion Xa in which the coating tip portion 4T is crimped by the insulation barrel portion 12Ba and a conductor crimping portion Xb in which the conductor tip portion 3T is crimped by crimping from the wire barrel portion 12Bb. Yes.

As shown in FIGS. 1 and 2, outside the connector 1, as shown in FIGS. 1 and 2, a shield braid 7 formed by knitting a metal wire or resin wire with a metal plating process into a tube shape, and two in the figure. It is covered with a resin boot 8 indicated by a dotted line. The three terminal-attached electric wires 2 extending to the other end of the connector 1 are accommodated in a cylindrical corrugate 9 (see FIG. 11B) together with the shield braid 7.
3 to 6, illustration of the shield braid 7, the boot 8, and the corrugate 9 is omitted for convenience of illustration.

  The shield braid 7 is, for example, an electromagnetic shield member that absorbs electromagnetic waves emitted from the electric wires 2 when the electric wires 2 are for high current and high voltage. The shield braid 7 shields the electromagnetic waves from being emitted to the outside. doing.

The shield braid 7 has an end located on the outer wall portion of the metal cover 11, and a stainless steel band 16 as a substantially annular predetermined fastener formed corresponding to the shape of the metal cover 11 (see FIG. 11 (a), partially enlarged view). The boot 8 is fixed to the metal cover 11 by a predetermined band member (not shown), and the boot 8 covers the ends of the electric wire 2, the metal cover 11, and the shield braid 7.
The corrugate 9 is formed in a bellows shape in which concave portions having a concave shape on the entire circumference and convex portions having a convex shape on the entire circumference are alternately arranged along the longitudinal direction, and a slit that allows a part of the circumferential direction to be divided. The part 9a is formed along the longitudinal direction. The corrugate 9 is formed such that one end portion and the other end portion thereof can be separated from the slit portion 9a and can be deformed.

  As shown in FIGS. 3 to 6, the housing 10 of the connector 1 includes a plurality of wire insertion holes 60 that allow the insertion of the electric wires 2 corresponding to the number of the electric wires 2 with terminals (here, 3 I) It is arranged.

  The wire insertion hole 60 penetrates from one end side to the other end side of the housing 10, and has a wire insertion hole body space 61 in which the base side is arranged with respect to the wire distal end portion 2T in the longitudinal direction of the terminal-attached electric wire 2; The electric wire crimping portion arrangement space 62 in which the portion X is arranged is formed in communication with each other.

  The electric wire insertion hole main body space 61 is formed so as to be insertable in the same cross-sectional shape as the cross-sectional shape of the electric wire 2A. For this reason, in the state where the electric wire 2A is inserted into the electric wire insertion hole 60, the outer peripheral surface of the insulating coating 4 of the electric wire 2A comes into contact with the inner wall portion of the electric wire insertion hole 60 without substantial gaps. The position of the electric wire 2A is held at a predetermined position.

Further, as shown in FIG. 6, the wire crimping portion arrangement space 62 and the wire insertion hole body space 61 have different diameters (widths), and the wire insertion hole body space 61 has the wire crimping portion placement space 62. Specifically, the diameter of the terminal fitting 12 is formed to be smaller than the diameter of the connecting terminal portion 12A so that at least the connecting terminal portion 12A is not inserted.
Thereby, the step part 63 is formed in the communication part with the electric wire insertion hole main body space 61 in the electric wire crimping part arrangement space 62.

Of the connector 1, the housing 10 has a groove 10 b, 10 b for mounting the O-rings 5, 5 shown in FIGS. 5 and 6 and both sides for forming the groove 10 b on the outer wall portion of the connector 10. , And a pair of locking claws 10d disposed so as to sandwich the electric wire 2 (see FIG. 5).
The locking claw 10d described above is disposed at the end portion in the insertion direction of the electric wire insertion hole 60 described later.

  As shown in FIG. 1 to FIG. 5, the locking claw 10 d of the housing 10 has a free end at the other end, so that the electric wire 2 </ b> A is not inserted into the electric wire insertion hole 60. When the locking claw 10 d is pressed toward the center of the electric wire insertion hole 60, the locking claw 10 d can be displaced toward the center due to the flexibility of the housing 10.

  On the other hand, the metal cover 11 has a cylindrical portion 11a having a substantially oval cross section, and a flange portion 11b that is upright from one end side of the cylindrical portion 11a and has a substantially rectangular shape. The flange portion 11b includes: Bolt holes 11c for inserting bolts 6 (see FIG. 6) are formed at the four corners.

  In the connector 1, the other end side edge of the cylindrical portion 11 a of the metal cover 11 is locked by the locking claw 10 d, whereby the position of the other end side of the metal cover 11 is restricted. The flange portion 11b is in contact with the convex portion 10c of the housing 10, so that the position of one end side of the metal cover 11 is regulated. In this way, the relative positions of the housing 10 and the metal cover 11 are restricted by restricting the positions of the one end side and the other end side of the metal cover 11 with the convex portions 10c and the locking claws 10d.

  In the connector 1, in a state where the tip end portion of the terminal-attached electric wire 2 is inserted into the electric wire insertion hole 60, the electric wire insertion hole main body space 61 has a wire crimping portion X (wire tip portion 2 T) in the tip end portion of the electric wire 2. The base side portion is arranged, and the electric wire crimping portion X is arranged in the electric wire crimping portion arrangement space 62.

  And in this electric wire crimping part arrangement | positioning space 62, the filler 13 is filled so that the electric wire crimping part X may be covered. For example, an epoxy resin, an acrylic resin, or silicon is used as the filler 13.

  Further, in the housing 10, the width of the electric wire crimping portion arrangement space 62 is set to be substantially the same as the width of the insulation barrel portion 12Ba, as shown in FIG. 6, whereby the insulation barrel portion 12Ba is crimped to the electric wire. It fits in the part arrangement space 62 with almost no gap.

Next, a method for assembling the connector 1 will be described with reference to FIGS.
FIG. 7A is a horizontal end face of the housing 10 and is an explanatory view of an O-ring mounting process. FIG. 7B is a vertical end surface of the housing 10 and the metal cover 11 and is an explanatory diagram of the cover fitting process. FIG. 8A is a horizontal end face of the housing 10 and the metal cover 11 and is an explanatory diagram of the cover fitting process. FIG. 8B is a vertical end surface of the housing 10 and the metal cover 11 and is an explanatory diagram of the electric wire insertion process.

  Further, FIG. 9A is a horizontal end face of the connector 1 and is an explanatory diagram of the electric wire insertion process. FIG. 9B is a horizontal end face of the connector 1 and is an explanatory diagram of the insulating coating peeling process. FIG. 10A is a horizontal end face of the connector 1 and is an explanatory diagram of the crimping process. FIG. 10B is a horizontal end face of the connector 1 and is an explanatory diagram of the terminal positioning step.

  Further, FIG. 11A is a side view showing a part of the connector 1 with an enlarged end face, and is an explanatory view of the shield braiding attachment process. FIG. 11B is a side view showing a part of the connector 1 by an end face, and is an explanatory view of the corrugation mounting process. FIG. 12 is a side view showing a part of the connector 1 as an end face, and is an explanatory view of the filling material filling step.

  The assembly method of the connector 1 includes an O-ring mounting step for mounting the O-ring 5 to the housing 10, a cover fitting step for fitting the metal cover 11 to the housing 10, and inserting the electric wire 2 </ b> A into the housing 10. An electric wire inserting step, an insulating coating peeling step for peeling the insulating coating 4 on the distal end side of the electric wire 2A, a crimping step for crimping the terminal fitting 12 to the electric wire 2A, and a terminal for positioning the terminal fitting 12 with respect to the housing 10 A positioning step, a shield braiding attachment step of attaching the shield braid 7 to the housing 10, a boot attachment step of attaching the boot 8 to the housing 10, a corrugation attachment step of bending the electric wire 2 by the corrugate 9, and an electric wire The filling material filling step of filling the crimping portion arrangement space 62 with the filling material 13 is performed in this order.

  In the O-ring attaching step, as shown in FIG. 7A, one O-ring 5 and 5 is fitted and attached to each of the concave grooves 10b and 10b formed in the outer wall portion of the housing 10.

  In the cover fitting step, the other end side of the housing 10 is inserted from one end side of the metal cover 11 as shown in FIG. Here, when the locking claw 10 d located on the other end side of the housing 10 is to be inserted into the metal cover 11, first, the other end side of the locking claw 10 d is at one end side edge of the metal cover 11 as shown in the figure. Abut. When the housing 10 is further inserted, the locking claw 10d is pressed, so that the locking claw 10d is displaced toward the center of the wire insertion hole 60 as indicated by a thick arrow in the figure. . Thereby, the housing 10 can be inserted into the metal cover 11.

  When the latching claw 10d inserted into the metal cover 11 reaches the other end of the metal cover 11 and gets over the edge of the other end of the metal cover 11, it is released from the pressing force of the metal cover 11. To return to the original shape. Thereby, as shown in FIG. 8A, the locking claw 10d is in a state where the other end side edge portion of the metal cover 11 is locked, and the locking portion 10d and the convex portion 10c on one end side The relative position with the metal cover 11 is regulated. Thereby, the mounting | wearing to the housing 10 of the metal cover 11 is completed.

  In the electric wire insertion step, as shown in FIG. 8B, the electric wire 2A before the terminal fitting 12 is crimped to the electric wire tip portion 2T, the electric wire 2A without the insulating coating 4 being peeled off at the tip portion, 10 electric wire insertion holes 60 are inserted.

  Here, as shown in FIG. 8 (b), the wire tip 2 </ b> T is inserted from the other end side of the housing 10. Thus, by inserting the electric wire 2A into the electric wire insertion hole 60 of the housing 10, the displacement of the locking claw 10d is regulated by the electric wire 2, and as a result, the locking state of the locking claw 10d with respect to the metal cover 11 is reduced. It is held by the electric wire 2A.

  In the crimping process, the terminal fitting 12 is crimped to the wire tip 2T. Here, as shown in FIG. 9A, after the wire tip 2T inserted through the wire insertion hole 60 is pulled out to the outside on one end side of the housing 10, the insulation on the tip side is insulated as shown in FIG. 9B. The coating 4 is removed to expose the conductor 3. Further, as shown in FIG. 10 (a), the covering tip portion 4T in the wire tip portion 2T is crimped and crimped by the insulation barrel portion 12Ba, and the conductor tip portion 3T is crimped and crimped by the wire barrel portion 12Bb. .

  In the terminal positioning step, as shown by a thick arrow in FIG. 10B, the terminal-attached electric wire is used until the base end portion 12Baa of the wire crimping portion X (particularly, the insulation barrel portion 12Ba) abuts on the step portion 63 of the housing 10. Pull 2 to the other end. Then, the base end portion 12Baa of the insulation barrel portion 12Ba is brought into contact with the step portion 63, whereby the position in the insertion direction of the electric wire 2 is regulated, and the electric wire crimping portion X is placed in the electric wire crimping portion arrangement space 62 of the housing 10. Position it.

  In the shield braid attachment process, as shown in a partially enlarged view in FIG. 11A, the housing 10 is inserted into the opening on one end side of the shield braid 7 formed in a cylindrical shape from the other end side to form a cylindrical shape. A portion corresponding to the front side portion of the metal cover 11 at the peripheral edge of the opening of the shield braid 7 is fastened and fixed by the stainless steel band 16. Furthermore, the front end portion of the peripheral portion of the opening 7a of the cylindrical shield braid 7 is folded back toward the stainless steel band 16 from the front side of the metal cover 11, and the folded portion is again wound and fixed with the tape 15. .

  In the boot mounting process, as shown in FIG. 11 (b), the shield braid 7 is covered with the boot 8, the boot 8 is inserted from the other end of the housing 10, and the insertion portion is fixed with the resin band 17. To do.

  In the corrugation mounting step, the slits 9a formed along the longitudinal direction of the cylindrical corrugate 9 are spaced apart in the circumferential direction, and the electric wire 2 with the crimp terminal is bent through the slits 9a. The corrugate 9 is attached to the boot 8 by internally fitting one end portion thereof into the corrugated fitting cylindrical portion 8a on the base side of the boot 8 (see a partially broken portion in FIG. 11B).

  In the filling material filling step, as shown in FIG. 12, the filling material 13 is filled so as to cover the wire crimping portion X in the wire crimping portion arrangement space 62 in a state where the crimped wire crimping portion X is arranged.

  The connector 1 can be assembled by passing through each process mentioned above.

  According to the method for assembling the connector 1 of the present embodiment described above, the terminal fitting 12 is crimped and connected to the wire tip 2T that has been pulled out of the wire insertion hole 60 after being inserted into the wire insertion hole 60 after the wire insertion step. Since this is a method of performing the crimping process, the housing 10 can be made compact. Further, the arrangement pitch of the electric wires 2 in the connector 1 can be narrowed in response to the demand for more complicated and sophisticated electric circuits and electric parts.

  More specifically, as shown in FIG. 6, at least the connection terminal portion 12A of the terminal fitting 12 is connected to the insertion port Ma serving as the connection counterpart, and accordingly, the shaft is more axial than the electric wire 2 with a terminal. At least a part of the outer diameter with respect to the direction is formed large.

  For this reason, if the crimping step is performed before the electric wire insertion step, it is necessary to insert the terminal fitting 12 of the electric wire 2 with terminal fitting into the electric wire insertion hole 60 in the electric wire insertion step.

  Then, as shown in the conventional connector 500 shown in FIG. 13 (b), the wire insertion hole 501a can insert the connection terminal portion 12A of the terminal fitting 12 of the electric wire 2 with the terminal fitting, so that the terminal fitting 12 can be inserted. Since it is necessary to form an inner diameter larger than the width, the size of the housing 501 cannot be made compact.

  FIG. 13 (b) shows a diagram corresponding to FIG. 13 (a) of a conventional connector 500. Reference numeral 500 in FIG. 13 (b) is a conventional connector, and reference numeral 501 is a conventional housing. Reference numeral 502 denotes a conventional metal cover, and reference numeral 501a denotes an electric wire insertion hole.

On the other hand, by performing the crimping step after the wire insertion step, it is not necessary to insert the terminal fitting 12 into the wire insertion hole 60 in the wire insertion step, and it is sufficient to insert only the wire tip 2T.
The wire insertion hole 60 may be formed with an inner diameter into which the wire 2 can be inserted, and it is not necessary to form the wire insertion hole 60 in consideration of the size of the terminal fitting 12.

  Therefore, the wire insertion hole main body space 61 of the wire insertion hole 60 has an inner diameter into which only the wire 2 can be inserted, as shown in FIG. 6 and FIG. Therefore, it can be formed with a smaller diameter compared to the conventional wire insertion hole 501a as shown in FIG. 13B, which is inserted together with the terminal fitting 12 in the electric wire 2 with terminal fitting. .

  Therefore, the connector 1 of the present embodiment has a housing 10 that is more compact and has a terminal arrangement than the conventional connector 500 that is assumed to be inserted into the wire insertion hole 501a together with the terminal fitting 12 of the electric wire 2 with terminal fitting. A narrow pitch can be achieved.

  In addition, as described above, the housing 10 can be reduced in size by performing the crimping step after the electric wire insertion step. In connection with this, the metal cover 11 attached to the downsized housing 10 is also included. Miniaturization can be achieved (see the connector 500 indicated by the phantom line in FIG. 13A).

  Further, as described above, when the crimping step is performed after the wire insertion step, the wire insertion hole body space 61 of the wire insertion hole 60 can be formed with a small diameter. If it is performed before the insertion step, the exposed conductor tip 3T comes into contact with the inner peripheral surface of the wire insertion hole 60 in the process of inserting the wire tip 2T into the wire insertion hole 60 having a small diameter. Thus, there is a risk that the wire constituting the conductor tip 3T may be broken.

  On the other hand, according to the manufacturing method of the connector 1 of the present embodiment, the uncovered conductor tip 3T covered with the insulating coating 4 is formed in the wire insertion hole by performing the coating peeling step after the wire insertion step. 60 (see FIG. 9A), the conductor tip 3T is brought into contact with the inner surface of the wire insertion hole main body space 61 formed in a small diameter in the insertion process into the wire insertion hole 60, whereby the conductor tip 3T is brought into contact. There is no deformation such as bending, and the strands constituting the conductor tip 3T are not unraveled and can be inserted smoothly.

  Moreover, according to the manufacturing method of the connector 1 of this embodiment, as mentioned above, after the crimping step, the proximal end portion 12Baa of the wire crimping portion X is brought into contact with the stepped portion 63 so that the wire distal end portion with respect to the housing 10 By performing the terminal positioning step of positioning 2T, each wire crimping portion X of the terminal-attached electric wire 2 can be accommodated in a state of being positioned in the wire crimping portion arrangement space 62 in the housing 10.

  In detail, since the manufacturing method of the connector 1 of this embodiment performs a crimping | compression-bonding process after an electric wire insertion process as mentioned above, in the crimping | compression-bonding process, in the state which protruded the electric wire front-end | tip part 2T from the housing 10 to the one end side. Therefore, it is necessary to crimp a crimping fitting to the wire tip 2T. For this reason, although the electric wire front-end | tip part 2T will be in the state protruded with respect to the predetermined position, by making the base end part 12Baa of the electric wire crimping part X contact | abut to the step part 63 as a terminal positioning process after that, the electric wire front-end | tip part The portion 2T can be positioned and can be accommodated in the housing 10 at a predetermined position.

  Furthermore, according to the manufacturing method of the connector 1 of the present embodiment, as described above, the wire crimping portion placement is performed because the filling step of filling the wire crimping portion placement space 62 with the filler 13 is performed after the terminal positioning step. The space 62 can be filled with the filler 13 and can be fixed in a state where the base end portion 12Baa of the wire crimping portion X is positioned on the stepped portion 63 and connected to the connection partner portion through the wire insertion hole 60. It is possible to prevent water from entering the water.

  Furthermore, in the filling step, by filling the wire crimping portion arrangement space 62 with the filler 13 (potting material), it is possible to improve the water stoppage of the connection portion with the connection partner portion, in addition to this, Compared with the case where a wire seal is used instead of the filler 13, cost reduction and size reduction can be achieved.

  In particular, since the inner diameter of the electric wire insertion hole 60 can be reduced by performing the crimping step after the electric wire insertion step, the inner diameter that does not cause a gap between the electric wire insertion hole 60 and the inserted electric wire 2. Can be formed. Thereby, since it is sufficient to fill the filler 13 only in the electric wire crimping portion arrangement space 62, the amount of the filler 13 used can be greatly reduced.

  Furthermore, according to the manufacturing method of the connector 1 of the present embodiment, as described above, the strength against external force can be reinforced by attaching the metal cover 11 to the housing 10 outside the housing 10. In particular, by attaching the metal cover 11, an electromagnetic shielding effect can also be achieved.

  In addition, as described above, the housing 10 can be reduced in size by performing the crimping step after the wire insertion step as described above, and accordingly, the metal cover to be attached to the downsized housing 10. 11 can also be reduced in size.

  In addition, according to the manufacturing method of the connector 1 of this embodiment, since the cover attachment process is performed before the electric wire insertion process, the electric wire 2 is obstructed by performing the cover attachment process before the electric wire insertion process. In addition, the metal cover 11 can be easily attached to the housing 10.

As described above, in the correspondence between the configuration of the present invention and the above-described embodiment, the electric wire with terminal 2 and the electric wire 2A of the present embodiment correspond to electric wires,
The cover corresponds to the metal cover 11,
The connection partner portion corresponds to the insertion port Ma of the electric device M, but is not limited to the above embodiment.

DESCRIPTION OF SYMBOLS 1 ... Connector 2 ... Electric wire with terminal 2A ... Electric wire 2T ... Electric wire tip 3 ... Conductor 3T ... Conductor tip 4 ... Insulation coating 4T ... Coating tip 10 ... Housing 11 ... Metal cover 12 ... Terminal metal fitting 12A ... Connection terminal part 12Baa ... Base end part 13 of electric wire crimping part ... Filler 60 ... Electric wire insertion hole 61 ... Electric wire insertion hole body space 62 ... Electric wire crimping part arrangement space 63 ... Step part X ... Electric wire crimping part Xa ... Covering crimping part Xb ... Conductor crimping part Ma ... insertion slot

This invention relates to a method of manufacturing a front end side of the insulating coating peeled and with a housing for accommodating the terminal fitting crimped connected to the conductor tip to expose the interior of the conductor connectors of the wire.

  The above-described connector is usually accommodated in a state in which a terminal fitting of a terminal-attached electric wire that is crimped to the distal end side of the electric wire is disposed in a terminal insertion hole formed in a synthetic resin housing.

For example, the “waterproof connector” disclosed in Patent Document 1 is one such connector.
In the waterproof connector disclosed in Patent Document 1, the terminal fitting of the electric wire with terminal is assembled by inserting the terminal fitting of the electric wire with terminal into the terminal accommodating chamber of the housing while inserting the terminal fitting of the cover integrally assembled with the housing. It can be housed inside the housing.

  However, in the case of a structure in which the terminal fitting of the electric wire with terminal is inserted into the terminal insertion portion of the housing while being inserted through the terminal insertion portion, the terminal insertion portion allows insertion including the terminal fitting in the electric wire with terminal in the entire longitudinal direction. It is necessary to secure the inner diameter to be formed.

  For this reason, it is necessary to make the housing large in correspondence with such a terminal insertion portion. However, in this case, the housing is downsized in response to the recent complexity and advancement of electric and electronic circuits, and the terminal The arrangement pitch could not be reduced.

JP 2003-346969 A

This invention, it is possible to achieve compactness, and an object thereof is to provide a method of manufacturing can be Turkey connector can be narrowed pitch of arrangement pitch of the wire.

According to the present invention, the terminal fitting is crimped to at least the conductor tip at the wire tip provided with the conductor tip exposed by stripping off the insulation coating on the tip of the electric wire coated with the conductor. In the wire insertion hole formed by penetrating the housing so that the wire inserted from one end side of the housing that houses the tip side of the wire and the other end side in the insertion direction is inserted, A method of manufacturing a connector for connecting a wire to a connection counterpart portion via a terminal fitting, wherein the wire tip is crimped to the wire tip by the crimp fitting. An electric wire crimping portion is formed, and the electric wire insertion hole is arranged on the base side of the electric wire crimping portion in the longitudinal direction of the electric wire, and the electric wire pressure for arranging the electric wire crimping portion. The wire insertion hole body space is formed in a smaller diameter than the wire crimping portion placement space so as to make the insertion of the crimping fitting impossible, and the wire crimping portion placement space is formed. The step of forming a step portion at a portion communicating with the wire insertion hole main body space in the wire, and after the wire insertion step, peeling off the insulating coating on the tip end side of the wire to expose the conductor, thereby removing the coating And after the coating peeling step, the crimping step of crimping and connecting the terminal fitting to the wire tip that has come out from the other end side of the wire insertion hole, and after the crimping step, An electric wire arrangement step is performed in which the electric wire distal end portion that has come out from the other end side of the electric wire insertion hole is returned to the reverse direction of the insertion direction and arranged at a predetermined position, and as the electric wire arrangement step, the base end portion of the electric wire crimping portion is Above It is brought into contact with the parts, and performs terminal positioning step for positioning the wire tip relative to the housing.

  Usually, the terminal fitting is provided with a connection terminal portion, and the connection terminal portion is formed larger than the electric wire in order to connect to the connection counterpart portion. In the connector manufacturing method of the present invention, before the crimping step of crimping and connecting such a terminal fitting to the wire tip, the wire tip that is not crimped to the terminal fitting in the wire insertion step, to the wire insertion hole, Inserting from one end side in the insertion direction, and in the crimping step, a terminal fitting is crimped and connected to the tip end of the electric wire that is pulled out from the other end side.

  Thus, by performing the crimping step after the wire insertion step, the wire insertion hole does not need to be formed with an inner diameter into which the entire connection fitting can be inserted, and corresponds to the inner diameter into which only the wire can be inserted. Can be formed. That is, it can be formed in a small diameter compared with the case where an electric wire with a terminal fitting provided with a terminal fitting is inserted.

  Therefore, the housing size can be reduced. Furthermore, the arrangement pitch of the electric wires can be narrowed in response to the demands for more complicated and sophisticated electric circuits and electric parts.

Here, when the connector of the present invention is a male connector, the connection partner portion indicates a female connector that can be connected to the male connector. Similarly, in the case of a female connector, the female connector The male connector that can be connected to is shown. Alternatively, for example, such as the connector connection port of the electric device, it shows the portion serving as the connector of the connection partner.

Further, as described above, by performing the coating peeling step after the wire insertion step, in the wire insertion step, an unexposed conductor tip portion covered with an insulating coating can be inserted into the insertion hole. Therefore, even when the wire insertion hole is formed with a small diameter, in the insertion process of inserting the wire tip into the wire insertion hole, the conductor tip is brought into contact with the inner surface of the wire insertion hole so that the conductor tip is deformation or caused such bending, without resulting in strands constituting is known the conductor tip, Ru can be inserted smoothly.

Furthermore , according to the above-described configuration, the crimping step is performed after the wire insertion step. Therefore, in the crimping step, it is necessary to crimp the crimping fitting to the wire tip with the wire tip protruding from the housing. Occurs. For this reason, although the said electric wire front-end | tip part will be in the state protruded with respect to the predetermined position of a housing, the electric wire front-end | tip part is positioned by making the said electric wire crimping part contact | abut to a step part as a terminal positioning process after that. Can be accommodated in the housing at a predetermined position.

Moreover, as an aspect of the present invention, a filling step of filling the wire crimping portion arrangement space with a filler can be performed after the terminal positioning step.
According to the configuration described above, by filling the wire crimping portion arrangement space with the filler, the wire crimping portion can be fixed in a state of being positioned on the stepped portion, and the connection partner portion can be connected through the wire insertion hole. It is possible to prevent water from entering the connection portion.

  In particular, since the inner diameter of the wire insertion hole can be reduced as described above by performing the crimping step after the wire insertion step, for example, there is no gap between the wire insertion hole and the inserted wire. It can be formed with an inner diameter. Thereby, since it is sufficient to fill the filler only in the electric wire crimping portion arrangement space, the amount of filler used can be greatly reduced.

As an aspect of the present invention, a cover attaching step for attaching a cover for covering the housing to the outside of the housing can be performed.
The cover is preferably a metal cover made of metal.

  According to the above-described configuration, the strength against external force can be reinforced by attaching the cover to the housing. In particular, by attaching a metal cover, an electromagnetic shielding effect can also be achieved.

  In addition, the housing can be reduced in size by performing the crimping step after the wire insertion step as described above, but the metal cover attached to the reduced housing is also reduced in size accordingly. You can plan.

In addition, it is preferable to perform a cover attachment process before the said electric wire insertion process. By performing the cover mounting step prior to the wire insertion step, the wire is unobtrusive, Ru can be attached to the cover easily against the housing.

According to this invention, can be provided with can be made compact, a method of manufacturing can be Turkey connector can be narrowed pitch of arrangement pitch of the wire.

The perspective view which looked at the connector of this embodiment from the one end side. The perspective view which looked at the connector from the other end side. The disassembled perspective view which shows a housing and a metal cover. The rear view which looked at the housing from the other end. The longitudinal end view of a connector. The horizontal end view of a connector. Explanatory drawing of the assembly method of a connector. Explanatory drawing of the assembly method of a connector. Explanatory drawing of the assembly method of a connector. Explanatory drawing of the assembly method of a connector. Explanatory drawing of the assembly method of a connector. Explanatory drawing of the assembly method of a connector. Action | operation explanatory drawing of a connector.

An embodiment of the present invention will be described below with reference to the drawings.
1 shows a perspective view of the connector 1 as seen from one end side, FIG. 2 shows a perspective view of the connector 1 as seen from the other end side, FIG. 3 shows an exploded perspective view showing the housing 10 and the metal cover 11, FIG. 4 shows a rear view of the housing 10 as viewed from the other end side. FIG. 5 shows a vertical end view of the connector 1, and FIG. 6 shows a horizontal end view of the connector 1. In the present specification, the end on the terminal fitting 12 side is defined as one end, and the end on the opposite side of the electric wire 2 is defined as the other end. Moreover, in FIG. 1, FIG. 2, the boot 8 is shown in the permeation | transmission state with the dashed-two dotted line for convenience of illustration.

The connector 1 is for connecting the electric wire 2 for large current / high voltage to an electric device M (see FIG. 6) such as a motor mounted on an electric vehicle, for example.
The case of the electric device M shown in FIG. 6 is provided with an insertion port Ma and a bolt hole Mb. As shown in FIG. 6, the connector 1 is inserted into the insertion port Ma, and a bolt hole of a metal cover 11 described later. The electric device M and the electric wire 2 are connected by inserting the bolt 6 through 11c and the bolt hole Mb of the electric device M and fastening both.

  As shown in FIGS. 1 to 6, the connector 1 includes a flexible resin housing 10, a cylindrical metal cover 11 that covers the other end of the housing 10, and one end of the housing 10 from the outside. A plurality (here, three) of terminal fittings 12 exposed to each other, and a plurality (here, three) of wire crimping portions to be described later formed individually on one end side of the housing 10 corresponding to the plurality of terminal fittings 12 It is comprised with the filler 13 with which the space 62 was filled.

  As shown in FIGS. 1, 2, 5, and 6, the connector 1 is equipped with a plurality of (three in this case) terminal-attached electric wires 2. As for the electric wire 2 with a terminal, the front-end | tip part (terminal part) is crimped | bonded to the terminal metal fitting 12 accommodated in the connector 1 so that it may each mention later.

  By the way, the electric wire 2A in the electric wire 2 with a terminal constitutes an electric wire tip portion 2T which is a portion to be crimped to the terminal fitting 12 on the tip side (terminal side) of the electric wire 2A (see FIG. 6). The wire tip portion 2T is composed of a conductor tip portion 3T and a sheath tip portion 4T. The conductor tip portion 3T is a conductor exposed portion in which the conductor 3 is exposed by peeling off the insulation coating 4 on the tip side where the conductor 3 is coated with the insulation coating 4. It is. The covering tip portion 4T is a portion corresponding to the rear side of the conductor tip portion 3T in the tip side portion of the electric wire 2.

As shown in FIG. 6, the terminal fitting 12 in the terminal-attached electric wire 2 includes a connection terminal portion 12 a and a barrel portion 12 </ b> B, and is arranged in series along the longitudinal direction.
12 A of connection terminal parts are terminals connected with respect to connection object parts, such as insertion port Ma provided in the case of the electric equipment M (refer FIG. 6).
The barrel portion 12B is formed by arranging an insulation barrel portion 12Ba for crimping the coated tip portion 4T and a wire barrel portion 12Bb for crimping the conductor tip portion 3T in series.

  Moreover, the electric wire crimping | compression-bonding part X is comprised in the electric wire tip part 2T as a crimping | compression-bonding part which crimped | bonded this electric wire tip part 2T with the barrel part 12B.

  The wire crimping portion X is composed of a coating crimping portion Xa in which the coating tip portion 4T is crimped by the insulation barrel portion 12Ba and a conductor crimping portion Xb in which the conductor tip portion 3T is crimped by crimping from the wire barrel portion 12Bb. Yes.

As shown in FIGS. 1 and 2, outside the connector 1, as shown in FIGS. 1 and 2, a shield braid 7 formed by knitting a metal wire or resin wire with a metal plating process into a tube shape, and two in the figure. It is covered with a resin boot 8 indicated by a dotted line. The three terminal-attached electric wires 2 extending to the other end of the connector 1 are accommodated in a cylindrical corrugate 9 (see FIG. 11B) together with the shield braid 7.
3 to 6, illustration of the shield braid 7, the boot 8, and the corrugate 9 is omitted for convenience of illustration.

  The shield braid 7 is, for example, an electromagnetic shield member that absorbs electromagnetic waves emitted from the electric wires 2 when the electric wires 2 are for high current and high voltage. The shield braid 7 shields the electromagnetic waves from being emitted to the outside. doing.

The shield braid 7 has an end located on the outer wall portion of the metal cover 11, and a stainless steel band 16 as a substantially annular predetermined fastener formed corresponding to the shape of the metal cover 11 (see FIG. 11 (a), partially enlarged view). The boot 8 is fixed to the metal cover 11 by a predetermined band member (not shown), and the boot 8 covers the ends of the electric wire 2, the metal cover 11, and the shield braid 7.
The corrugate 9 is formed in a bellows shape in which concave portions having a concave shape on the entire circumference and convex portions having a convex shape on the entire circumference are alternately arranged along the longitudinal direction, and a slit that allows a part of the circumferential direction to be divided. The part 9a is formed along the longitudinal direction. The corrugate 9 is formed such that one end portion and the other end portion thereof can be separated from the slit portion 9a and can be deformed.

  As shown in FIGS. 3 to 6, the housing 10 of the connector 1 includes a plurality of wire insertion holes 60 that allow the insertion of the electric wires 2 corresponding to the number of the electric wires 2 with terminals (here, 3 I) It is arranged.

  The wire insertion hole 60 penetrates from one end side to the other end side of the housing 10, and has a wire insertion hole body space 61 in which the base side is arranged with respect to the wire distal end portion 2T in the longitudinal direction of the terminal-attached electric wire 2; The electric wire crimping portion arrangement space 62 in which the portion X is arranged is formed in communication with each other.

  The electric wire insertion hole main body space 61 is formed so as to be insertable in the same cross-sectional shape as the cross-sectional shape of the electric wire 2A. For this reason, in the state where the electric wire 2A is inserted into the electric wire insertion hole 60, the outer peripheral surface of the insulating coating 4 of the electric wire 2A comes into contact with the inner wall portion of the electric wire insertion hole 60 without substantial gaps. The position of the electric wire 2A is held at a predetermined position.

Further, as shown in FIG. 6, the wire crimping portion arrangement space 62 and the wire insertion hole body space 61 have different diameters (widths), and the wire insertion hole body space 61 has the wire crimping portion placement space 62. Specifically, the diameter of the terminal fitting 12 is formed to be smaller than the diameter of the connecting terminal portion 12A so that at least the connecting terminal portion 12A is not inserted.
Thereby, the step part 63 is formed in the communication part with the electric wire insertion hole main body space 61 in the electric wire crimping part arrangement space 62.

Of the connector 1, the housing 10 has a groove 10 b, 10 b for mounting the O-rings 5, 5 shown in FIGS. 5 and 6 and both sides for forming the groove 10 b on the outer wall portion of the connector 10. , And a pair of locking claws 10d disposed so as to sandwich the electric wire 2 (see FIG. 5).
The locking claw 10d described above is disposed at the end portion in the insertion direction of the electric wire insertion hole 60 described later.

  As shown in FIG. 1 to FIG. 5, the locking claw 10 d of the housing 10 has a free end at the other end, so that the electric wire 2 </ b> A is not inserted into the electric wire insertion hole 60. When the locking claw 10 d is pressed toward the center of the electric wire insertion hole 60, the locking claw 10 d can be displaced toward the center due to the flexibility of the housing 10.

  On the other hand, the metal cover 11 has a cylindrical portion 11a having a substantially elliptical cross section, and a flange portion 11b that is upright from one end side of the cylindrical portion 11a and has a substantially rectangular shape. The flange portion 11b includes: Bolt holes 11c for inserting bolts 6 (see FIG. 6) are formed at the four corners.

  In the connector 1, the other end side edge of the cylindrical portion 11 a of the metal cover 11 is locked by the locking claw 10 d, whereby the position of the other end side of the metal cover 11 is restricted. The flange portion 11b is in contact with the convex portion 10c of the housing 10, so that the position of one end side of the metal cover 11 is regulated. In this way, the relative positions of the housing 10 and the metal cover 11 are restricted by restricting the positions of the one end side and the other end side of the metal cover 11 with the convex portions 10c and the locking claws 10d.

  In the connector 1, in a state where the tip end portion of the terminal-attached electric wire 2 is inserted into the electric wire insertion hole 60, the electric wire insertion hole main body space 61 has a wire crimping portion X (wire tip portion 2 T) in the tip end portion of the electric wire 2. The base side portion is arranged, and the electric wire crimping portion X is arranged in the electric wire crimping portion arrangement space 62.

  And in this electric wire crimping part arrangement | positioning space 62, the filler 13 is filled so that the electric wire crimping part X may be covered. For example, an epoxy resin, an acrylic resin, or silicon is used as the filler 13.

  Further, in the housing 10, the width of the electric wire crimping portion arrangement space 62 is set to be substantially the same as the width of the insulation barrel portion 12Ba, as shown in FIG. 6, whereby the insulation barrel portion 12Ba is crimped to the electric wire. It fits in the part arrangement space 62 with almost no gap.

Next, a method for assembling the connector 1 will be described with reference to FIGS.
FIG. 7A is a horizontal end face of the housing 10 and is an explanatory view of an O-ring mounting process. FIG. 7B is a vertical end surface of the housing 10 and the metal cover 11 and is an explanatory diagram of the cover fitting process. FIG. 8A is a horizontal end face of the housing 10 and the metal cover 11 and is an explanatory diagram of the cover fitting process. FIG. 8B is a vertical end surface of the housing 10 and the metal cover 11 and is an explanatory diagram of the electric wire insertion process.

  Further, FIG. 9A is a horizontal end face of the connector 1 and is an explanatory diagram of the electric wire insertion process. FIG. 9B is a horizontal end face of the connector 1 and is an explanatory diagram of the insulating coating peeling process. FIG. 10A is a horizontal end face of the connector 1 and is an explanatory diagram of the crimping process. FIG. 10B is a horizontal end face of the connector 1 and is an explanatory diagram of the terminal positioning step.

  Further, FIG. 11A is a side view showing a part of the connector 1 with an enlarged end face, and is an explanatory view of the shield braiding attachment process. FIG. 11B is a side view showing a part of the connector 1 by an end face, and is an explanatory view of the corrugation mounting process. FIG. 12 is a side view showing a part of the connector 1 as an end face, and is an explanatory view of the filling material filling step.

  The assembly method of the connector 1 includes an O-ring mounting step for mounting the O-ring 5 to the housing 10, a cover fitting step for fitting the metal cover 11 to the housing 10, and inserting the electric wire 2 </ b> A into the housing 10. An electric wire inserting step, an insulating coating peeling step for peeling the insulating coating 4 on the distal end side of the electric wire 2A, a crimping step for crimping the terminal fitting 12 to the electric wire 2A, and a terminal for positioning the terminal fitting 12 with respect to the housing 10 A positioning step, a shield braiding attachment step of attaching the shield braid 7 to the housing 10, a boot attachment step of attaching the boot 8 to the housing 10, a corrugation attachment step of bending the electric wire 2 by the corrugate 9, and an electric wire The filling material filling step of filling the crimping portion arrangement space 62 with the filling material 13 is performed in this order.

  In the O-ring attaching step, as shown in FIG. 7A, one O-ring 5 and 5 is fitted and attached to each of the concave grooves 10b and 10b formed in the outer wall portion of the housing 10.

  In the cover fitting step, the other end side of the housing 10 is inserted from one end side of the metal cover 11 as shown in FIG. Here, when the locking claw 10 d located on the other end side of the housing 10 is to be inserted into the metal cover 11, first, the other end side of the locking claw 10 d is at one end side edge of the metal cover 11 as shown in the figure. Abut. When the housing 10 is further inserted, the locking claw 10d is pressed, so that the locking claw 10d is displaced toward the center of the wire insertion hole 60 as indicated by a thick arrow in the figure. . Thereby, the housing 10 can be inserted into the metal cover 11.

  When the latching claw 10d inserted into the metal cover 11 reaches the other end of the metal cover 11 and gets over the edge of the other end of the metal cover 11, it is released from the pressing force of the metal cover 11. To return to the original shape. Thereby, as shown in FIG. 8A, the locking claw 10d is in a state where the other end side edge portion of the metal cover 11 is locked, and the locking portion 10d and the convex portion 10c on one end side The relative position with the metal cover 11 is regulated. Thereby, the mounting | wearing to the housing 10 of the metal cover 11 is completed.

  In the electric wire insertion step, as shown in FIG. 8B, the electric wire 2A before the terminal fitting 12 is crimped to the electric wire tip portion 2T, the electric wire 2A without the insulating coating 4 being peeled off at the tip portion, 10 electric wire insertion holes 60 are inserted.

  Here, as shown in FIG. 8 (b), the wire tip 2 </ b> T is inserted from the other end side of the housing 10. Thus, by inserting the electric wire 2A into the electric wire insertion hole 60 of the housing 10, the displacement of the locking claw 10d is regulated by the electric wire 2, and as a result, the locking state of the locking claw 10d with respect to the metal cover 11 is reduced. It is held by the electric wire 2A.

  In the crimping process, the terminal fitting 12 is crimped to the wire tip 2T. Here, as shown in FIG. 9A, after the wire tip 2T inserted through the wire insertion hole 60 is pulled out to the outside on one end side of the housing 10, the insulation on the tip side is insulated as shown in FIG. 9B. The coating 4 is removed to expose the conductor 3. Further, as shown in FIG. 10 (a), the covering tip portion 4T in the wire tip portion 2T is crimped and crimped by the insulation barrel portion 12Ba, and the conductor tip portion 3T is crimped and crimped by the wire barrel portion 12Bb. .

  In the terminal positioning step, as shown by a thick arrow in FIG. 10B, the terminal-attached electric wire is used until the base end portion 12Baa of the wire crimping portion X (particularly, the insulation barrel portion 12Ba) abuts on the step portion 63 of the housing 10. Pull 2 to the other end. Then, the base end portion 12Baa of the insulation barrel portion 12Ba is brought into contact with the step portion 63, whereby the position in the insertion direction of the electric wire 2 is regulated, and the electric wire crimping portion X is placed in the electric wire crimping portion arrangement space 62 of the housing 10. Position it.

  In the shield braid attachment process, as shown in a partially enlarged view in FIG. 11A, the housing 10 is inserted into the opening on one end side of the shield braid 7 formed in a cylindrical shape from the other end side to form a cylindrical shape. A portion corresponding to the front side portion of the metal cover 11 at the peripheral edge of the opening of the shield braid 7 is fastened and fixed by the stainless steel band 16. Furthermore, the front end portion of the peripheral portion of the opening 7a of the cylindrical shield braid 7 is folded back toward the stainless steel band 16 from the front side of the metal cover 11, and the folded portion is again wound and fixed with the tape 15. .

  In the boot mounting process, as shown in FIG. 11 (b), the shield braid 7 is covered with the boot 8, the boot 8 is inserted from the other end of the housing 10, and the insertion portion is fixed with the resin band 17. To do.

  In the corrugation mounting step, the slits 9a formed along the longitudinal direction of the cylindrical corrugate 9 are spaced apart in the circumferential direction, and the electric wire 2 with the crimp terminal is bent through the slits 9a. The corrugate 9 is attached to the boot 8 by internally fitting one end portion thereof into the corrugated fitting cylindrical portion 8a on the base side of the boot 8 (see a partially broken portion in FIG. 11B).

  In the filling material filling step, as shown in FIG. 12, the filling material 13 is filled so as to cover the wire crimping portion X in the wire crimping portion arrangement space 62 in a state where the crimped wire crimping portion X is arranged.

  The connector 1 can be assembled by passing through each process mentioned above.

  According to the method for assembling the connector 1 of the present embodiment described above, the terminal fitting 12 is crimped and connected to the wire tip 2T that has been pulled out of the wire insertion hole 60 after being inserted into the wire insertion hole 60 after the wire insertion step. Since this is a method of performing the crimping process, the housing 10 can be made compact. Further, the arrangement pitch of the electric wires 2 in the connector 1 can be narrowed in response to the demand for more complicated and sophisticated electric circuits and electric parts.

  More specifically, as shown in FIG. 6, at least the connection terminal portion 12A of the terminal fitting 12 is connected to the insertion port Ma serving as the connection counterpart, and accordingly, the shaft is more axial than the electric wire 2 with a terminal. At least a part of the outer diameter with respect to the direction is formed large.

  For this reason, if the crimping step is performed before the electric wire insertion step, it is necessary to insert the terminal fitting 12 of the electric wire 2 with terminal fitting into the electric wire insertion hole 60 in the electric wire insertion step.

  Then, as shown in the conventional connector 500 shown in FIG. 13 (b), the wire insertion hole 501a can insert the connection terminal portion 12A of the terminal fitting 12 of the electric wire 2 with the terminal fitting, so that the terminal fitting 12 can be inserted. Since it is necessary to form an inner diameter larger than the width, the size of the housing 501 cannot be made compact.

  FIG. 13 (b) shows a diagram corresponding to FIG. 13 (a) of a conventional connector 500. Reference numeral 500 in FIG. 13 (b) is a conventional connector, and reference numeral 501 is a conventional housing. Reference numeral 502 denotes a conventional metal cover, and reference numeral 501a denotes an electric wire insertion hole.

On the other hand, by performing the crimping step after the wire insertion step, it is not necessary to insert the terminal fitting 12 into the wire insertion hole 60 in the wire insertion step, and it is sufficient to insert only the wire tip 2T.
The wire insertion hole 60 may be formed with an inner diameter into which the wire 2 can be inserted, and it is not necessary to form the wire insertion hole 60 in consideration of the size of the terminal fitting 12.

  Therefore, the wire insertion hole main body space 61 of the wire insertion hole 60 has an inner diameter into which only the wire 2 can be inserted, as shown in FIG. 6 and FIG. Therefore, it can be formed with a smaller diameter compared to the conventional wire insertion hole 501a as shown in FIG. 13B, which is inserted together with the terminal fitting 12 in the electric wire 2 with terminal fitting. .

  Therefore, the connector 1 of the present embodiment has a housing 10 that is more compact and has a terminal arrangement than the conventional connector 500 that is assumed to be inserted into the wire insertion hole 501a together with the terminal fitting 12 of the electric wire 2 with terminal fitting. A narrow pitch can be achieved.

  In addition, as described above, the housing 10 can be reduced in size by performing the crimping step after the electric wire insertion step. In connection with this, the metal cover 11 attached to the downsized housing 10 is also included. Miniaturization can be achieved (see the connector 500 indicated by the phantom line in FIG. 13A).

  Further, as described above, when the crimping step is performed after the wire insertion step, the wire insertion hole body space 61 of the wire insertion hole 60 can be formed with a small diameter. If it is performed before the insertion step, the exposed conductor tip 3T comes into contact with the inner peripheral surface of the wire insertion hole 60 in the process of inserting the wire tip 2T into the wire insertion hole 60 having a small diameter. Thus, there is a risk that the wire constituting the conductor tip 3T may be broken.

  On the other hand, according to the manufacturing method of the connector 1 of the present embodiment, the uncovered conductor tip 3T covered with the insulating coating 4 is formed in the wire insertion hole by performing the coating peeling step after the wire insertion step. 60 (see FIG. 9A), the conductor tip 3T is brought into contact with the inner surface of the wire insertion hole main body space 61 formed in a small diameter in the insertion process into the wire insertion hole 60, whereby the conductor tip 3T is brought into contact. There is no deformation such as bending, and the strands constituting the conductor tip 3T are not unraveled and can be inserted smoothly.

  Moreover, according to the manufacturing method of the connector 1 of this embodiment, as mentioned above, after the crimping step, the proximal end portion 12Baa of the wire crimping portion X is brought into contact with the stepped portion 63 so that the wire distal end portion with respect to the housing 10 By performing the terminal positioning step of positioning 2T, each wire crimping portion X of the terminal-attached electric wire 2 can be accommodated in a state of being positioned in the wire crimping portion arrangement space 62 in the housing 10.

  In detail, since the manufacturing method of the connector 1 of this embodiment performs a crimping | compression-bonding process after an electric wire insertion process as mentioned above, in the crimping | compression-bonding process, in the state which protruded the electric wire front-end | tip part 2T from the housing 10 to the one end side. Therefore, it is necessary to crimp a crimping fitting to the wire tip 2T. For this reason, although the electric wire front-end | tip part 2T will be in the state protruded with respect to the predetermined position, by making the base end part 12Baa of the electric wire crimping part X contact | abut to the step part 63 as a terminal positioning process after that, the electric wire front-end | tip part The portion 2T can be positioned and can be accommodated in the housing 10 at a predetermined position.

  Furthermore, according to the manufacturing method of the connector 1 of the present embodiment, as described above, the wire crimping portion placement is performed because the filling step of filling the wire crimping portion placement space 62 with the filler 13 is performed after the terminal positioning step. The space 62 can be filled with the filler 13 and can be fixed in a state where the base end portion 12Baa of the wire crimping portion X is positioned on the stepped portion 63 and connected to the connection partner portion through the wire insertion hole 60. It is possible to prevent water from entering the water.

  Furthermore, in the filling step, by filling the wire crimping portion arrangement space 62 with the filler 13 (potting material), it is possible to improve the water stoppage of the connection portion with the connection partner portion, in addition to this, Compared with the case where a wire seal is used instead of the filler 13, cost reduction and size reduction can be achieved.

  In particular, since the inner diameter of the electric wire insertion hole 60 can be reduced by performing the crimping step after the electric wire insertion step, the inner diameter that does not cause a gap between the electric wire insertion hole 60 and the inserted electric wire 2. Can be formed. Thereby, since it is sufficient to fill the filler 13 only in the electric wire crimping portion arrangement space 62, the amount of the filler 13 used can be greatly reduced.

  Furthermore, according to the manufacturing method of the connector 1 of the present embodiment, as described above, the strength against external force can be reinforced by attaching the metal cover 11 to the housing 10 outside the housing 10. In particular, by attaching the metal cover 11, an electromagnetic shielding effect can also be achieved.

  In addition, as described above, the housing 10 can be reduced in size by performing the crimping step after the wire insertion step as described above, and accordingly, the metal cover to be attached to the downsized housing 10. 11 can also be reduced in size.

  In addition, according to the manufacturing method of the connector 1 of this embodiment, since the cover attachment process is performed before the electric wire insertion process, the electric wire 2 is obstructed by performing the cover attachment process before the electric wire insertion process. In addition, the metal cover 11 can be easily attached to the housing 10.

As described above, in the correspondence between the configuration of the present invention and the above-described embodiment, the electric wire with terminal 2 and the electric wire 2A of the present embodiment correspond to electric wires,
The cover corresponds to the metal cover 11,
The connection partner portion corresponds to the insertion port Ma of the electric device M, but is not limited to the above embodiment.

DESCRIPTION OF SYMBOLS 1 ... Connector 2 ... Electric wire with terminal 2A ... Electric wire 2T ... Electric wire tip 3 ... Conductor 3T ... Conductor tip 4 ... Insulation coating 4T ... Coating tip 10 ... Housing 11 ... Metal cover 12 ... Terminal metal fitting 12A ... Connection terminal part 12Baa ... Base end part 13 of electric wire crimping part ... Filler 60 ... Electric wire insertion hole 61 ... Electric wire insertion hole body space 62 ... Electric wire crimping part arrangement space 63 ... Step part X ... Electric wire crimping part Xa ... Covering crimping part Xb ... Conductor crimping part Ma ... insertion slot

Claims (10)

A crimping step in which a terminal fitting is crimped and connected to at least the conductor tip in the wire tip provided with a conductor tip that exposes the conductor by peeling off the insulation coating on the tip of the electric wire coated with a conductor. When,
An electric wire insertion step of inserting the electric wire distal end portion into an electric wire insertion hole formed by penetrating the housing so that the electric wire inserted from one end side of the housing accommodating the distal end side of the electric wire is pulled out from the other end side in the insertion direction. And
A method for manufacturing a connector for connecting an electric wire to a connection partner part via a terminal fitting,
After the wire insertion step,
Performing the crimping step of crimping and connecting the terminal fitting to the wire tip that has come out of the other end of the wire insertion hole;
The manufacturing method of the connector which performs the electric wire arrangement | positioning process which returns the said electric wire front-end | tip part pulled out from the said other end side of the said electric wire insertion hole to the reverse direction of an insertion direction, and arrange | positions it in a predetermined position after the said crimping | compression-bonding process. The manufacturing method of the connector of Claim 1 which performs the coating peeling process which peels off the said insulation coating of the front end side of an electric wire, and comprises the conductor front-end | tip part which exposed the said conductor after the said electric wire insertion process. Forming a wire crimping portion in which the wire tip is crimped by the crimping fitting on the wire tip,
The wire insertion hole,
An electric wire insertion hole main body space for disposing a base side from the electric wire crimping portion in the longitudinal direction of the electric wire;
Formed in communication with each other with the wire crimping portion placement space for placing the wire crimping portion,
The wire insertion hole body space is formed to have a smaller diameter than the wire crimping portion arrangement space so that the crimp fitting cannot be inserted,
Forming a stepped portion in the communication portion with the wire insertion hole body space in the wire crimping portion arrangement space,
The connector according to claim 1 or 2, wherein, as the electric wire arranging step, a terminal positioning step is performed in which a proximal end portion of the electric wire crimping portion is brought into contact with the stepped portion to position the electric wire distal end portion with respect to the housing. Manufacturing method. The manufacturing method of the connector of Claim 3 which performs the filling process which fills the said electric wire crimping part arrangement | positioning space with a filler after the said terminal positioning process. The manufacturing method of the connector according to any one of claims 1 to 4, wherein a cover attaching step of attaching a cover covering the housing to the outside of the housing is performed. A terminal fitting that is crimp-connected to at least the conductor tip in the wire tip having a conductor tip that exposes the conductor by peeling off the insulation coating on the tip of the electric wire coated with a conductor. A housing configured to be accommodated in a state in which the wire tip is inserted into the formed wire insertion hole, and the connector configured to be connectable to the connection counterpart portion via the terminal fitting,
Forming a wire crimping portion in which the wire tip is crimped by the crimping fitting on the wire tip,
The wire insertion hole,
An electric wire insertion hole body space in which the base side is arranged with respect to the electric wire tip in the longitudinal direction of the electric wire;
Formed in communication with each other with the wire crimping portion placement space for placing the wire crimping portion,
Fill the wire crimping part placement space with filler,
The connector in which the wire insertion hole body space is formed with a smaller diameter than the wire crimping portion so that the crimp fitting cannot be inserted. The manufacturing method of the connector of Claim 6 which formed the step part which can contact | abut the base end part of the said electric wire crimping part in the communication part with the said electric wire insertion hole main body space in the said electric wire crimping part arrangement | positioning space. The wire tip is formed of a coating tip on the tip side of the insulation coating and the conductor tip,
The wire crimping portion,
Formed with a coated crimped portion crimped with the insulating coating and a conductor crimped portion crimped with the conductor coating,
The connector according to claim 6, wherein the stepped portion is formed so as to be able to contact a proximal end portion of the covering crimping portion. A wire tip having a conductor tip that exposes the conductor by stripping off the insulation coating on the tip of the electric wire covered with an insulation coating, and is crimped to at least the conductor tip in the wire tip A housing in which a terminal fitting is accommodated and a wire insertion hole for inserting a wire tip is formed,
The wire insertion hole,
An electric wire insertion hole body space in which the base side is arranged with respect to the electric wire tip in the longitudinal direction of the electric wire;
Formed in a state of communication with each other with a wire crimping portion arrangement space in which a wire crimping portion in which the crimping fitting is crimped with respect to the wire tip portion,
A housing in which the electric wire insertion hole body space is formed to have a smaller diameter than the electric wire crimping portion so that the crimp fitting cannot be inserted. The cover formed so that attachment to the outer side of the housing of Claim 9 was possible.

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