WO2017061251A1

WO2017061251A1 - Connector

Info

Publication number: WO2017061251A1
Application number: PCT/JP2016/077388
Authority: WO
Inventors: 康弘工藤
Original assignee: 住友電装株式会社
Priority date: 2015-10-05
Filing date: 2016-09-16
Publication date: 2017-04-13
Also published as: JP2017073217A

Abstract

A shielded connector (1) comprising: a fixed member (10) that is fixed to the outer periphery of an electrical wire (W); a housing (11) into which the electrical wire (W) is inserted; a front retainer (13) that is attached to the housing (11), said front retainer (13) being positioned such that the housing (11) and the front retainer (13) sandwich the fixed member (10) from both sides along the extension direction of the electrical wire (W); and a lock mechanism (lock arms 13D, 13E, engaging protrusion 24C) that releasably locks the housing (11) and the front retainer (13) while the front retainer (13) is attached to the housing (11).

Description

connector

The technology disclosed in this specification relates to a connector.

2. Description of the Related Art Conventionally, a connector through which an electric wire is inserted is known such that the connector is restricted from moving relative to the electric wire in the extending direction of the electric wire (see, for example, Patent Document 1).
Specifically, the electric wire holding structure (corresponding to a connector) described in Patent Document 1 includes an electric wire holder including a first member and a second member, and a cylindrical shield case. The electric wire is inserted into the electric wire holder by the electric wire being sandwiched between the two members. And in the electric wire holding structure of patent document 1, an electric wire holder is fixed to an electric wire by press-fitting an electric wire holder inside a shield case in the state. This restricts the electric wire holder from moving relative to the electric wire in the direction in which the electric wire extends.

JP 2014-3033 A

By the way, there are times when you want to disassemble the connector for maintenance. However, according to the electric wire holding structure described in Patent Document 1 described above, since the electric wire holder is press-fitted into the shield case, there is a problem that it is difficult to remove the shield case and it cannot be easily disassembled.

This specification discloses a technique that facilitates disassembly of the connector while restricting relative movement of the connector through which the electric wire is inserted in the extending direction of the electric wire with respect to the electric wire.

The connector disclosed in the present specification includes a fixing member fixed to an outer periphery of an electric wire, a housing through which the electric wire is inserted, and a movement restricting member assembled to the housing, the housing and the movement A movement restricting member that sandwiches the fixing member from both sides of the wire in the extending direction with the restricting member, and the housing and the movement restricting member can be unlocked in a state where the movement restricting member is assembled to the housing. And a locking mechanism that locks in such a form.

According to the above connector, since the fixing member fixed to the electric wire is sandwiched from both sides in the electric wire extension direction by the housing and the movement restricting member, the connector moves relative to the electric wire in the electric wire extension direction. Can be regulated. And according to said connector, since a housing and a movement control member are locked in the form which can be unlocked, a housing and a movement control member can be easily disassembled by canceling | releasing a lock in the case of a maintenance. Can do.
Therefore, according to said connector, a connector can be easily disassembled in the case of a maintenance, restrict | limiting that the connector in which the electric wire is penetrated moves relative to the electric wire in the extending direction of the electric wire.

A terminal fitting connected to the electric wire and having a flat contact portion; an overhanging portion projecting radially outward from the fixing member; and the housing or the movement restricting member. A pair of rotation restricting portions that are provided on both sides in the circumferential direction of the electric wire with the overhanging portion interposed therebetween, and the electric wire attempts to rotate in the circumferential direction of the electric wire with respect to the housing A pair of rotation restricting portions that abut against the overhanging portion and restrict the rotation of the electric wire.

When a terminal fitting with a flat contact point is connected to the electric wire, if the electric wire rotates in the circumferential direction with respect to the connector, the direction in which the plate surface of the contact part faces changes, and the terminal fitting is attached to the device. When fixing, an inconvenience such as an operator having to correct the direction of the contact portion occurs. According to said connector, since rotation of an electric wire is controlled, such inconvenience can be suppressed.

Further, the fixing member may be a metal member fixed by caulking to the electric wire.

According to the above connector, the fixing member can be efficiently fixed to the electric wire.

According to the connector disclosed in the present specification, it is possible to facilitate disassembly of the connector while restricting the connector through which the electric wire is inserted from moving relative to the electric wire in the extending direction of the electric wire.

The perspective view of the connector concerning an embodiment Connector exploded perspective view Sectional view taken along line AA of the connector shown in FIG. Front view of the fitting section viewed from the front Sectional view taken along line BB of the connector shown in FIG.

<Embodiment>
The embodiment will be described with reference to FIGS. In the following description, the up-down direction and the front-rear direction are based on the up-down direction and the front-rear direction shown in FIG. 4, and the left-right direction is based on the left-right direction shown in FIG.

First, an outline of a shield connector 1 (an example of a connector) according to the present embodiment will be described with reference to FIG. The shield connector 1 is inserted with three electric wires W (w1, w2, and w3) that connect an inverter mounted on a vehicle such as an electric vehicle or a hybrid vehicle and a three-phase motor. The fitting portion 22 is fitted into a fitting hole provided in a metal case that houses the phase motor, and is attached to the case. And the terminal metal fitting 18 connected to each electric wire W is connected to an inverter or a three-phase motor, whereby the inverter and the three-phase motor are connected.

(1) Configuration of Shield Connector As shown in FIG. 2, the shield connector 1 includes three fixing members 10 fixed to the electric wires W, a resin housing 11 through which the electric wires W are inserted, a seal ring 12, and a housing 11. A front retainer 13 (an example of a movement restricting member) assembled from the front side, three rubber plugs 14 for watertight sealing between the inner peripheral surface of the housing 11 and the electric wire W, a back retainer 15 for preventing the rubber plugs 14 from being removed, A metal shield bracket 16 and a caulking ring 17 for caulking and fixing a braided wire (not shown) to the shield bracket 16 are provided.

As shown in FIG. 1, a terminal fitting 18 is connected to one end of each electric wire W. The terminal fitting 18 is formed by punching or bending using a conductive metal flat plate as a base material. The contact 18A connected to the device (inverter or three-phase motor) and the wire W And a barrel portion 18B for crimping the core wire to the terminal fitting 18. 18 A of contact parts are formed in flat form, and the bolt insertion hole 18C in which the bolt for connecting the terminal metal fitting 18 to an apparatus is penetrated in the plate | board thickness direction.

As shown in FIG. 2, the fixing member 10 is obtained by caulking and fixing a long plate-like metal member having a certain thickness (for example, 2 mm) to the outer periphery of the electric wire W, from the terminal fitting 18 to the other end side of the electric wire W. It is fixed at a slightly spaced position.
As shown in FIG. 3, each of the fixing members 10 is provided with two projecting portions 19 that project outward in the radial direction of the electric wire W on opposite sides of the electric wire W. These overhang portions 19 are formed by bending the long plate-shaped metal member described above. In addition, the overhang | projection part 19 may be previously formed before caulking the long plate-shaped metal member mentioned above to the electric wire W, or when caulking the metal member in which the overhang | projection part 19 is not formed to the electric wire W. You may form by crimping, bending a metal member.

As shown in FIG. 2, the housing 11 is roughly formed in a horizontally long cylindrical shape in the left-right direction, and a flange 21 is provided around the outer periphery. Further, as shown in FIG. 4, the interior of the housing 11 is partitioned forward and backward by a partition wall 23.
A front portion of the housing 11 from the flange 21 constitutes a fitting portion 22. Grooves 22 A (see FIG. 2) that are recessed over the entire circumference are formed on the outer circumferential surface of the fitting portion 22, and the inner circumference of the fitting hole provided in the outer circumferential surface of the fitting portion 22 and the device case. A seal ring 12 made of synthetic resin that seals between the surfaces in a watertight manner is fitted in the groove 22A.

As shown in FIG. 3, the fitting portion 22 has a so-called race track shape that is composed of two straight lines and two semicircles when viewed from the front side, and the inside is left and right by the two wall portions 24 (24A, 24B). It is partitioned into three spaces 40 (40A, 40B, 40C) in the direction. The partition wall 23 that divides the housing 11 forward and backward is provided with an electric wire insertion opening 25 through which each of the three spaces 40 is inserted.
The diameter of the wire insertion opening 25 is narrower than the distance from the tip of one overhanging portion 19 to the tip of the other overhanging portion 19 of the fixing member 10 fixed to the electric wire W inserted through the wire insertion opening 25. It has become. For this reason, the fixing member 10 cannot pass through the electric wire insertion opening 25.

Further, as shown in FIG. 3, a pair of rotation restricting portions 26 for restricting the rotation of the electric wires W are provided at a substantially center in the vertical direction on the surface facing the right side of the left wall portion 24A. Each rotation restricting portion 26 is formed in a plate shape, and extends to the right side in parallel with each other in a posture in which the plate surface faces the vertical direction. Similarly, a pair of rotation restricting portions 26 extending toward the left side are also provided on the right wall portion 24B. And the two overhang | projection parts 19 of the fixing member 10 currently fixed to the center electric wire W2 are located between a pair of rotation control parts 26, respectively. That is, the pair of rotation restricting portions 26 are provided on both sides in the circumferential direction of the electric wire W with the overhang portion 19 interposed therebetween.

Further, a pair of rotation restricting portions 26 extending toward the right side are also provided on the inner peripheral surface on the left side of the housing 11, and the overhanging portion 19 of the fixing member 10 fixed to the left electric wire W 1 is connected to the pair of rotations. It is located between the rotation restricting portions 26. Similarly, a pair of rotation restricting portions 26 extending toward the left side are also provided on the inner peripheral surface on the right side of the housing 11, and the overhanging portion 19 of the fixing member 10 fixed to the right electric wire W3 is the pair. Are located between the rotation restricting portions 26.

As shown in FIG. 2, the rear portion of the housing 11 in the housing 11 is configured such that three cylindrical portions 27 extending in a cylindrical shape in the front-rear direction are arranged in parallel in the left-right direction and adjacent cylindrical portions 27 are connected to each other. As shown in FIG. 4, a rubber plug 14 through which an electric wire W is passed is accommodated inside each cylindrical portion 27. The rubber plug 14 is for stopping water between the electric wire W and the housing 11. Each cylindrical portion 27 is configured such that internal spaces at the rear end portion thereof are in communication with each other, and a retainer mounting recess 28 in which the back retainer 15 is accommodated is formed by integrally forming these internal spaces.

The back retainer 15 is for preventing the rubber stopper 14 from coming off. In the back retainer 15, retaining protrusions 15 A are provided on the outer peripheral surface corresponding to each cylindrical portion 27. On the other hand, on the inner peripheral surface of the retainer mounting recess 28, a retaining hole 27 A is provided vertically so that a retaining protrusion 15 A is fitted from the inside and locked in the front-rear direction. As a result, the back retainer 15 is held in the state where it is mounted in the retainer mounting recess 28, and the rubber plug 14 is prevented from coming off.

As shown in FIG. 2, the front retainer 13 has a retainer main body 13A and three electric wire holding portions 13B. The retainer body 13A is a plate-like member having a substantially racetrack shape when viewed from the front side, and is formed with three recesses 13C that are recessed in a U-shape from the bottom to the top and spaced apart from each other in the left-right direction. The electric wires W inserted through the housing 11 are fitted into the three concave portions 13C.

The wire holding portion 13B is provided on the rear surface of the retainer main body portion 13A, and extends in a circular arc shape from the upper edge of the U-shaped recess 13C toward the rear side. As shown in FIG. 4, the electric wire holding portion 13 B has a step 29 formed by denting the lower surface of the rear end portion substantially by the thickness of the fixing member 10, and the fixing member 10 is fitted into the step 29.

Further, as shown in FIG. 5, two elastically

deformable lock arms

13D and 13E extending in a rod shape from between the adjacent electric wire holding portions 13B are integrally formed on the surface facing the rear side of the retainer main body portion 13A. Has been. The left lock arm 13D is formed at a position on the left side of the wall portion 24A, and the right lock arm 13E is formed at a position on the right side of the wall portion 24B. An engagement hole 13F is formed on the distal end side of each lock arm.

On the other hand, engagement projections 24C are formed on the wall 24A and the wall 24B, and when the front retainer 13 is assembled to the housing 11, the engagement projections 24C fit into the engagement holes 13F of the

lock arms

13D and 13E, respectively. As a result, the housing 11 and the front retainer 13 are locked in a state in which the front retainer 13 is assembled to the housing 11. The

lock arms

13D and 13E and the engagement protrusion 24C are examples of a lock mechanism.

Further, as shown in FIGS. 3 and 5, the partition wall 23 that divides the interior of the housing 11 forward and backward is formed with an opening 30 at a position behind the

lock arms

13D and 13E. The operator can release the lock between the housing 11 and the front retainer 13 by inserting a jig into the opening 30 from the rear and releasing the engagement between the engagement hole 13F and the engagement protrusion 24C. That is, the housing 11 and the front retainer 13 are locked in a form that can be unlocked.

As shown in FIG. 2, the shield bracket 16 includes a bracket cylindrical portion 16A formed in a cylindrical shape, and a bracket attachment portion 16B for attaching the shield bracket 16 to the device. The shield bracket 16 is a metal member that collectively covers the rear portion of the housing 11 (that is, the three cylindrical portions 27), and is manufactured by aluminum die casting in this embodiment.

A bolt insertion hole 16C is formed in the bracket attachment portion 16B, and the shield bracket 16 is fixed to the case when the bolt is inserted into the bolt insertion hole 16C and fastened to the case of the device. Thereby, the shield connector 1 is prevented from falling off, and the shield bracket 16 and the case are electrically connected to secure a shield path.

The caulking ring 17 is for caulking and fixing a substantially cylindrical braided wire (not shown) to the outer peripheral surface of the bracket cylindrical portion 16A. A braided wire (not shown) surrounds the three electric wires W in a lump, and the end is covered with the bracket cylindrical portion 16A. Then, the braided wire is fixed to the bracket cylindrical portion 16A by press-fitting the caulking ring 17 from above the braided wire with the braided wire covering the bracket cylindrical portion 16A.

(2) Action of Shield Connector First, with reference to FIG. 4, the action of restricting the shield connector 1 from moving relative to the electric wire W in the extending direction of the electric wire W will be described. Since the fixing member 10 is fitted in the step 29 of the electric wire holding portion 13B inside the housing 11, when the shield connector 1 tries to move rearward with respect to the electric wire W, the electric wire holding portion 13B is moved to the fixing member 10 from the front side. The movement is restricted by contact. On the other hand, when the shield connector 1 moves to the front side with respect to the electric wire W, the partition wall 23 that divides the interior of the housing 11 in the front-rear direction comes into contact with the fixing member 10 from the rear side to restrict the movement.

In other words, the shield connector 1 has the fixing member 10 fixed to the electric wire W sandwiched between the housing 11 and the front retainer 13 from both sides in the extending direction of the electric wire W, thereby relative to the electric wire W in the extending direction of the electric wire W. It is restricted to move.

Next, with reference to FIG. 3, the effect | action which controls that the electric wire W rotates to the circumferential direction of the electric wire W with respect to the shield connector 1 is demonstrated. As described above, in the central electric wire W2, the two overhang portions 19 of the fixing member 10 are positioned between the pair of rotation restricting portions 26, respectively. For this reason, when the electric wire W2 tries to rotate in the circumferential direction, the protruding portion 19 of the fixing member 10 comes into contact with the rotation restricting portion 26, and the rotation of the electric wire W is restricted. The same applies to the electric wires W1 and W3, and the rotation is restricted when the overhanging portion 19 abuts against the rotation restricting portion 26.

(3) Effect of Embodiment According to the shield connector 1 according to the first embodiment described above, the fixing member 10 fixed to the electric wire W is sandwiched between the housing 11 and the front retainer 13 from both sides in the extending direction of the electric wire W. Therefore, relative movement of the shield connector 1 with respect to the electric wire W in the extending direction of the electric wire W can be restricted. According to the shield connector 1, since the housing 11 and the front retainer 13 are locked in a form that can be unlocked, the housing 11 and the front retainer 13 can be easily disassembled by releasing the lock during maintenance. can do.
Therefore, according to the shield connector 1, the shield connector 1 into which the electric wire W is inserted is controlled to move relative to the electric wire W in the extending direction of the electric wire W, and the shield connector 1 can be easily disassembled during maintenance. can do.

Furthermore, according to the shield connector 1, when the electric wire W tries to rotate in the circumferential direction of the electric wire W with respect to the shield connector 1, the overhanging portion 19 of the fixing member 10 comes into contact with the rotation restricting portion 26 and the rotation is restricted. When the terminal fitting 18 having the flat contact portion 18A is connected to the electric wire W, the plate surface of the contact portion 18A faces when the electric wire W rotates in the circumferential direction of the electric wire W with respect to the shield connector 1. Changes, which causes inconvenience such as an operator having to correct the direction of the contact portion 18A when fixing the terminal fitting 18 to the device. According to the shield connector 1, since rotation of the electric wire W is regulated, such inconvenience can be suppressed.

Furthermore, according to the shield connector 1, the fixing member 10 is a metal member that is caulked and fixed to the electric wire W. For example, if the fixing member 10 is formed of a resin and the fixing member 10 is fixed to the electric wire W with an adhesive, the efficiency is poor because a time for applying the adhesive or a time for the adhesive to dry is necessary. Further, for example, even if the fixing member 10 is a metal member, if both ends are fastened with bolts and nuts after the fixing member 10 is attached to the electric wire W, it takes time to fasten and the efficiency is poor. On the other hand, when caulking and fixing a metal member, attachment and fixing can be performed simultaneously, so that the fixing member 10 can be efficiently fixed to the electric wire W.

<Other embodiments>
The technology disclosed in the present specification is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope disclosed by the present specification.

(1) In the above embodiment, when the electric wire holding portion 13B is in contact with the fixing member 10, the shield connector 1 slightly moves forward with respect to the electric wire W because the partition wall 23 is not in contact with the fixing member 10. However, when the partition wall 23 is brought into close contact with the fixing member 10, or the convex portion that is in close contact with the fixing member 10 from the rear side is provided in front of the partition wall 23, the shield connector 1 is connected to the electric wire W. Thus, it may be impossible to move at all in the extending direction of the electric wire W.

(2) In the above embodiment, the case where the partition wall 23 provided integrally with the housing 11 contacts the fixing member 10 has been described as an example. However, a member formed separately from the housing 11 is fixed to the housing 11, The fixed member may be in contact with the fixed member 10. That is, the structure in which the housing 11 abuts on the fixing member 10 may be a structure in which the housing 11 directly abuts, or a structure in which another member fixed to the housing 11 abuts. The same applies to the front retainer 13.

(3) Although the case where the rotation restricting portion 26 is provided in the housing 11 has been described as an example in the above embodiment, the rotation restricting portion 26 may be provided in the front retainer 13.

(4) In the above embodiment, the case where the rotation of the electric wire W is restricted by the overhanging portion 19 and the rotation restricting portion 26 has been described as an example. However, the electric wire W is wound around like the terminal fitting 18 is formed in a rod shape. If the operation of fixing the terminal fitting 18 to the device is not affected even if it rotates in the direction, the overhanging portion 19 and the rotation restricting portion 26 may not be provided.

(5) Although the case where the fixing member 10 is a metal member has been described as an example in the above embodiment, the fixing member 10 may be formed of resin.

(6) Although the case where the fixing member 10 is caulked and fixed to the electric wire W has been described as an example in the above embodiment, the fixing member 10 is fixed so as not to move in the extending direction of the electric wire W with respect to the electric wire W. Well, the fixing method is not limited to this. For example, the fixing member 10 may be fixed by fastening both ends with bolts and nuts, or the fixing member 10 may be fixed to the electric wire W with an adhesive.

(7) Although the case where the three electric wires W are inserted in the shield connector 1 has been described as an example in the above embodiment, the number of the electric wires W inserted through the shield connector 1 is not limited to three. Can be determined as appropriate.

DESCRIPTION OF SYMBOLS 1 ... Shield connector (an example of a connector), 10 ... Fixed member, 11 ... Housing, 13 ... Front retainer (An example of a movement control member), 13D, 13E ... Lock arm (An example of a lock mechanism), 19 ... Overhang | projection part, 24C ... engaging protrusion (an example of a lock mechanism), 26 ... rotation restricting portion, W (W1, W2, W3) ... electric wire

Claims

A fixing member fixed to the outer periphery of the electric wire;
A housing through which the electric wire is inserted;
A movement restricting member assembled to the housing, the movement restricting member sandwiching the fixing member from both sides in the extending direction of the electric wire by the housing and the movement restricting member;
A lock mechanism that locks the housing and the movement restriction member in a form that can be unlocked in a state where the movement restriction member is assembled to the housing;
Connector with.
A terminal fitting connected to the electric wire and having a flat contact portion;
A projecting portion projecting from the fixing member to the outside in the radial direction of the electric wire;
A pair of rotation restricting portions provided in the housing or the movement restricting member, provided on both sides in the circumferential direction of the electric wire with the protruding portion interposed therebetween, and the electric wire is A pair of rotation restricting portions that abut against the overhanging portion and restrict the rotation of the electric wire when attempting to rotate in the circumferential direction of the wire;
The connector according to claim 1, comprising:
3. The connector according to claim 1, wherein the fixing member is a metal member fixed by caulking to the electric wire.