WO2007113934A1

WO2007113934A1 - Reinforcement cover for connector connection section

Info

Publication number: WO2007113934A1
Application number: PCT/JP2006/324915
Authority: WO
Inventors: Natsumi Suzuki
Original assignee: Sumitomo Wiring Systems, Ltd.
Priority date: 2006-04-03
Filing date: 2006-12-14
Publication date: 2007-10-11
Also published as: JP2007280649A

Abstract

A reinforcement cover for a connector connection section of a wire harness. In the connector connection section, electric wires whose connectors are inserted and held in a terminal receiving chamber of a connector housing are bent and laterally led out after being led out of the terminal receiving chamber, and an L-shaped rubber connector boot is put over the electric wires that are laterally led out. The reinforcement cover is a resin molding detachably fitted over the connector boot. The reinforcement cover is fitted over the connector boot until the terminals in the connector housing are connected to mating terminals, thereby preventing twisting of the terminals at the ends of the electric wires. The reinforcement cover is removed after the terminals are connected.

Description

Specification

Reinforcing cover for connector connection

Technical field

TECHNICAL FIELD [0001] The present invention relates to a reinforcing cover for a connector connecting portion, and more particularly, a wire harness that also has a high-rigidity electric wire group force that runs laterally from a connecting portion with a connector is twisted during transportation or connector connection. This prevents electrical contact and accurately contacts the mating terminal to improve electrical connection reliability.

Background art

Conventionally, as disclosed in Japanese Patent Laid-Open No. 2006-81373 (Patent Document 1), an inverter mounted on an automobile and a motor are connected via a wire harness.

Specifically, as shown in FIG. 6, the connector 1 connected to one end of the wire harness WZH is fitted and connected to the connector housing 3 of the device 2 attached to the inverter (not shown), and the wire harness WZH Connect the terminal 3 housed in the connector 1 connected to the wire end to the other terminal (not shown) housed in the connector housing 4 and connect the wire harness WZH to the inverter via the bus bar 5 provided in the device 2. And!

[0003] However, since the wire group of the wire harness WZH is pulled out after being pulled out from the connector 1, the load is applied to the lead portion of the wire group when the wire harness WZH is transported or when the connector is connected. If force S is applied, the wire will be twisted, and as shown in Fig. 7, the terminal 3A connected to the end of the wire group will twist in the circumferential direction with respect to the axis, which may cause poor contact with the mating terminal.

In particular, in the case of wire harnesses for large currents that carry a current of 100 to 120 amperes, the wires become thick wires and have high rigidity, so if the wires are twisted, the twists are transmitted to the terminals of the wire terminals. If a twisted terminal and a mating terminal are mated and connected, contact failure is likely to occur as described above.

[0004] Patent Document 1: Japanese Unexamined Patent Publication No. 2006-81373

Disclosure of the invention

Problems to be solved by the invention [0005] The present invention has been made in view of the above-described problem, and prevents a twist from occurring in the wire of the wire harness by causing a large load to be applied to the connector connecting portion during conveyance or connection work of the wire harness. The problem is to prevent the terminals of the connector from being twisted and misaligned in the connector.

Means for solving the problem

[0006] In order to solve the above-described problem, the present invention provides a wire group in which a terminal is inserted and locked in a terminal housing chamber of a connector housing, and is bent out to the side after being pulled out from the terminal housing chamber. A reinforcing cover used for a connector connection portion of a wire harness that covers a wire group with an L-shaped rubber connector boot to regulate the pull-out direction,

The resin molded product that fits detachably on the connector boot,

Until the terminal in the connector housing is connected to the mating terminal, it is externally fitted to the connector bush to prevent twisting of the wire group and terminals of the terminals of the wire group, and is removed after the terminal is connected. We provide a reinforcing bar for the connector connection.

[0007] According to the above configuration, when a reinforcing cover made of a resin molded product is placed in the vicinity of the drawing position of the wire group that has been exposed to the connector force, the connector force is drawn when the wire harness is transported or when the connector is connected. Load is not applied to the wire group near the position. As a result, twisting of the terminals connected to the terminals of the wire group can be prevented, and there is no risk of poor contact with the counterpart terminal.

In addition, since the reinforcing cover can be reused as a configuration in which the wire harness force is removed after the connector is connected, a significant cost increase due to the provision of the reinforcing cover can be prevented.

In addition, the reinforcing bar is removed because it is not necessary to attach a reinforcing cover after the wiring harness has been routed, and it is preferable to reuse it, while being fitted and connected to the counterpart terminal in a normal position.

[0008] Specifically, a cylindrical shape having an L-shaped outer shape that is the same shape as the L-shaped connector boot is provided, and a locking portion for fixing the L-shaped one end opening to the connector housing side is provided. And a slit for detachment continuous from the one end opening to the other end opening, and Attach a braided cloth to the outer peripheral surface of the part that covers the side of the electric wire that is laterally extended, and provide male and female surface fasteners at both ends of the brazed cloth to open and close the slit,

The other end opening is extended to a joining position with a protector sheathed on the wire harness.

[0009] According to the above configuration, the L-shaped connector boot having the reinforcing cover placed on the laterally extending electric wire group has the same shape, so that the electric wire group can be corrected and held in the desired laterally extending shape.

Further, since the reinforcing cover is provided with a slit and the electric wire group is accommodated in the reinforcing cover through the slit, the reinforcing cover can be easily attached.

In addition, one end of the reinforcing cover is fixed to the connector housing side by a locking portion, and the other end is wrapped with male and female surface fasteners and the slit is closed, so that the reinforcing cover falls off during transportation of the wire harness or during connector connection work. Can be prevented. Furthermore, when removing the reinforcing cover, the reinforcing cover can be removed efficiently by removing the male and female surface fasteners and pulling the wire harness out of the reinforcing cover through the open slit.

[0010] The terminal inserted and locked in the connector housing is a terminal for large current with an energization amount of 100 to 120 amps (and instantaneously energized at a maximum of 360 amps Z2 seconds). Case), the reinforcing cover of the present invention is preferably used.

When energizing a large current as described above, the wire of the wire harness is a thick wire and has high rigidity, so if a load acts on the laterally exposed wire in the vicinity of the connector and a twist occurs, the wire It is directly transmitted to the terminal of the terminal and the terminal is easily twisted. However, by using the reinforcing cover of the present invention, it is possible to reliably prevent the terminal from being twisted because the electric wire is held so as not to be twisted.

The invention's effect

[0011] As described above, according to the present invention, when a reinforcing cover made of a resin-molded product is placed on the connector force in the vicinity of the lead-out position of the wire group that has been exposed, the connector can be used when the wire harness is transported. During connection work, no load force is applied to the wire group near the position where the connector is pulled out. This prevents twisting of the terminals connected to the ends of the wire group. There is no risk of contact failure with the counterpart terminal.

O Furthermore, since the reinforcing cover can be reused as a configuration in which the wire harness force is removed after the connector is connected, a significant cost increase due to the provision of the reinforcing cover can be prevented.

Brief Description of Drawings

FIG. 1 is a view showing a state in which a reinforcing cover is attached to a connector connecting portion of a wire harness.

2] A perspective view of a reinforcing cover.

FIG. 3 shows a reinforcing cover, where (A) is a front view and (B) is a bottom view.

FIG. 4 is a perspective view of a wire harness.

圆 5] Shows a state where a wiring harness with a reinforcing cover is attached to the inverter, (A) is a front view, and (B) is a plan view.

FIG. 6 is a drawing showing a conventional example.

7] This is a drawing showing the problems of the conventional example.

Explanation of symbols

Ϊ́ Strong bar

11 Opening at one end

12 Locking part

14 Opening the other end

15 slit

16 Braided cloth

20 connectors

24 Connector boot

25 Protector

26 terminals

30 Innota

w line

W / H wire harness BEST MODE FOR CARRYING OUT THE INVENTION

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

FIGS. 1 to 5 show an embodiment of the present invention, in which the reinforcing cover 10 is connected to a connector that is in the vicinity of the position where the bow I protrudes from the connector of the wire harness WZH that connects the inverter mounted on the automobile and the motor. This prevents the wire from being twisted by the load force ^s until the wire harness WZH is connected.

[0015] The reinforcing cover 10 is made of nylon and has a rigid cylindrical shape with an L-shaped outer shape that is the same shape as the connector boot 24 covered on the wire harness WZH described later, as shown in FIG. The bent portion is a curved surface that follows the bent shape of the electric wire group. One end opening 11 of the reinforcing cover 10 is formed in an oval shape, and a locking portion 12 having a larger diameter than the opening 11 is provided on the periphery of the opening 11, and the opening is within the region surrounded by the locking portion 12. Positioning protrusions 13 are provided on both sides of 11. On the other hand, the other end opening 14 is extended to the joint position with the protector 25 sheathed on the wire harness WZH.

In addition, an attachment / detachment slit 15 (hereinafter referred to as a slit 15) that is continuous from the one end opening 11 to the other end opening 14 is provided on the inner peripheral side of the reinforcing cover 10 bent in an L shape. Further, a brace cloth 16 provided with male and female surface fasteners at both ends is attached to the outer peripheral surface on the other end side of the reinforcing cover 10 so that the slit 15 can be opened and closed.

[0016] The wire harness WZH on which the reinforcing cover 10 is covered is composed of a group of three bundles of 15sq wires w that are energized with a large current of 100 to 120 amperes. A tab-like terminal 26 for large current with a current carrying amount of 100 to 120 amperes is crimped on the terminal of these electric wires w, and the terminal 26 is inserted and locked in a terminal accommodating chamber (not shown) of the connector 20 housing. As shown in FIG. 4, the connector 20 is connected to the wire harness WZH. A fixing material 21 for fixing the connector 20 to the case of the inverter 30 is attached to the connector 20 so as to be fitted outside, and a bolt hole 23 is provided in the flange 22 of the fixing material 21. The wire group is pulled out from the terminal accommodating chamber of the connector 20 and then bent and laterally extended. The laterally extended wire group is covered with a connector boot 24 having an L-shaped silicon force to regulate the direction of extraction. Yes. One end on the inverter side of the connector boot 24 is attached so as to cover the upper part of the fixing member 21, while the other end on the motor side is extended to a required length. The other end is provided with a protector 25 made of a resin molded product, and the protector 25 further extends to the motor side.

[0017] With the slit 15 of the reinforcing cover 10 opened, the wire harness WZH is inserted into the reinforcing cover 10 through the slit 15, and the locking portion 12 provided on the one end opening 11 side of the reinforcing cover 10 is connected to the connector. It is externally fixed to the fixing material 21 attached to 20. At this time, the protrusion 13 of the reinforcing cover 10 is inserted into the bolt hole 23 of the fixing member 21 and is positioned and fixed to the one end force S connector 20 of the reinforcing cover 10. At the other end of the reinforcing cover 10, the brazing cloth 16 is tightly wound to close the slit 15, and the brazing cloth 16 is fixed in a wound state by male and female surface fasteners. At this time, the other end of the reinforcing cover 10 extends to a position close to the protector 25 sheathed on the wire harness WZH.

[0018] In FIGS. 1 and 4, two wire harnesses WZH are bundled, and only one wire harness WZH is illustrated, and one protector 25 is externally attached to these wire harnesses WZH. Therefore, as shown in FIG. 5, the two wire harnesses W / H have different lengths from the connector 20 to the protector 25, and therefore the reinforcing covers 10 having different lengths are used. In this embodiment, two types of reinforcing covers 10 are used. Depending on the number of wire harnesses WZH, three or more types of reinforcing covers may be used.

As shown in FIG. 5, the inverter 30 to which the wire harness WZH is connected has two connector housing portions 31 arranged side by side on one side wall of a metal case. A female terminal (not shown) which is a counterpart terminal connected to the terminal 26 in the connector 20 is accommodated. Further, a bolt hole (not shown) for fixing the connector 20 to be connected is provided in the peripheral edge of the connector insertion opening of the connector housing portion 31.

[0020] As described above, the wire harness WZH is transported to the assembly line of the vehicle with the reinforcing cover 10 externally fitted. In the assembly line, as shown in FIG. 5, the connectors 20 are respectively fitted and connected to the two connector housing portions 31 arranged in parallel with the inverter 30, and the terminals of the wire harness WZH are connected to the terminals provided in the connector housing portion 31. Terminal 26 connected to the terminal is connected, and wire harness WZH is connected to the inverter.

Then, after the connector is connected, the winding cloth 16 is unwound and the slit 15 is opened, and the wire harness WZH is pulled out of the reinforcing cover 10 through the slit 15 to reinforce. The cover 10 is removed from the wire harness WZH.

After removing the reinforcing cover 10 for the wire harness W / H force, the fixing member 21 attached to the connector 20 is bolted and fixed to the connector housing 31.

According to the above configuration, the rigid reinforcing cover 10 is covered in the vicinity of the drawing position of the electric wire group extending from the connector 20! /, So when the wire harness WZH is transported or connected, No load is applied to the group of wires near the bow I protruding position from connector 20. As a result, twisting of the terminal 26 connected to the end of the wire group can be prevented, and there is no risk of poor contact with the counterpart terminal.

Further, since the reinforcing cover 10 can be reused as a configuration in which the wire harness WZH force is also removed after the connector 20 is connected, a significant increase in cost due to the provision of the reinforcing cover 10 can be prevented.

Claims

The scope of the claims

[1] An electric wire group in which a terminal is inserted and locked in the terminal housing chamber of the connector housing is pulled out from the terminal housing chamber and then bent out to the side, and an L-shaped rubber connector is connected to the lateral electric wire group. Reinforcing cover used for the connector connection part of the wire harness that covers the boot and regulates the pull-out direction,

The resin molded product that fits detachably on the connector boot,

Until the terminal in the connector housing is connected to the mating terminal, it is externally fitted to the connector bush to prevent twisting of the wire group and terminals of the terminals of the wire group, and is removed after the terminal is connected. This is a reinforcing bar for connector connections.

[2] A cylindrical shape having an L-shaped outer shape that is the same shape as the L-shaped connector boot, and a locking portion for fixing to the connector housing side is provided at the periphery of the L-shaped end opening. The attachment / detachment slit that is continuous from the one end opening to the other end opening is provided, and a brace cloth is attached to the outer peripheral surface of the portion that covers the side of the electric wire that is laterally extended. The slit can be opened and closed,

The reinforcing cover for a connector connecting portion according to claim 1, wherein the other end opening extends to a joining position with a protector sheathed on the wire harness.

[3] The connector connecting portion reinforcing force according to claim 1 or 2, wherein the terminal inserted and locked in the connector housing is a terminal for high current having an energization amount of 100 to 120 amperes.