JPH11185865A - Rear side structure of electric connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a high pressure fluid from entering inside a housing. SOLUTION: A connection terminal connected with an electric wire 2 in the rear side is housed in a housing 1 and cylinder-constituting bodies 13, 14 and square pillar-constituting bodies 11, 12 are butted respectively so as to surround the electric wire 2 and at the same time a corrugated pipe 4 is butted to the cylinder-constituting bodies. In this case, the square pillar-constituting bodies 11, 12 are locked by a locking means to pinch the front end part of the corrugated pipe 4 by the cylinder-constituting bodies 13, 14. The cylinder- constituting bodies 13, 14 and the corrugated pipe 4 are fastened by winding a tape 5. A rear protector 3 is assembled in the housing 1 by pushing engaging pieces and arms 20, 21 for locking in to the inside of the housing 1. The arms 20, 21 for locking are engaged with projected parts for locking in the housing to lock the connection terminal with the locking pieces.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rear structure of an electric connector used particularly at a place where high-pressure fluid may be sprayed.

[0002]

2. Description of the Related Art Conventionally, a wire harness in which electric wires are bundled has been assembled in an automobile, and this type of wire harness has a large number of connectors for electrically maintaining the wire harnesses or the wire harness and the electric equipment. in use. For example, when wiring harnesses are connected to each other, a pair of connection terminals that can be connected to each other and connected to an electric wire are housed in a pair of housings that can be fitted together, and these housings are fitted together. The connection terminals can be connected to each other. At this time, a rear portion of the terminal receiving hole of the housing is sealed by a wire seal member, and a fitting portion between the housings is sealed by a seal member. In some cases, a rear protector for regulating the position of the electric wire is attached to the rear portion of the housing. In this case, the rear protector may improve the sealing force.

[0003]

However, even when the rear protector is attached to the rear part of the housing, there is a part where the electric wire is partially exposed,
When a high-pressure fluid such as a cleaning liquid is sprayed on the housing, the high-pressure fluid is directly sprayed on the wire seal member, and the cleaning liquid enters the housing from between the inner and outer peripheral surfaces of the wire seal member. There is.

An object of the present invention is to solve the above-mentioned problems,
An object of the present invention is to provide a rear structure of an electrical connector that can prevent fluid from entering from a rear portion of a housing even when high-pressure fluid is sprayed.

[0005]

In order to achieve the above object, a rear structure of an electric connector according to the present invention is provided in a rear structure of an electric connector in which a connection terminal to which an electric wire is connected is housed in a housing. A rear protector is attached to the rear part of the housing so that no gap is formed, and a flexible tube is inserted into the rear part of the rear protector through the electric wire.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the illustrated embodiment. FIG. 1 is a perspective view of an embodiment in which a part is cut away. A plurality of connection terminals (not shown) in which a wire 2 is connected to a rear portion are accommodated in a housing 1, and a synthetic resin is formed in a rear portion of the housing 1. The rear protector 3 and the corrugated pipe 4 made of a synthetic resin having flexibility are sequentially assembled, and the rear part of the rear protector 3 and the corrugated pipe 4 are assembled.
Are wound around by a tape 5. Terminal housing holes (not shown) for housing the connection terminals are provided inside the housing 1, and the rear portions of the terminal housing holes are sealed by a wire seal member (not shown). A projection 6 for guiding the mating housing is provided on the outer surface of the side wall of the housing 1, and a locking arm 7 engaging with the locking projection of the mating housing is provided on the outer surface of the upper wall of the housing 1. .

FIG. 2 is a perspective view of the rear protector 3, and FIG. 3 is an exploded view. The rear protector 3 forms a cylinder by abutting a pair of square tube forming bodies 11, 12 which abut each other to form a square tube. And a pair of cylindrical forming bodies 13 and 14 are connected. One side edges of the square tube forming bodies 11 and 12 are integrated with each other at the hinge-like portion 15, and
The other side edges of the two can be locked by lock means (not shown).

The front end surfaces of the square tube forming bodies 11 and 12 are formed so as to be able to abut on the rear end surfaces of the housing 1 so as not to form a gap. Flange portions 16 and 17 that come into contact with each other so that no
Are formed respectively. In addition, square tube forming bodies 11 and 12
Are formed with locking pieces 18 and 19 (the locking pieces 19 are not shown) for locking the connection terminals accommodated in the housing 1 and preventing the connection terminals from being pulled out backward. Further, locking arms 2 that enter the inside of the housing 1 and engage with locking projections (not shown)
0 and 21 are provided respectively. The corrugated pipe 4 is provided with a cut 4a along the longitudinal direction. No gaps are created between them.

When assembling the electric connector, the electric wire 2
And a connection terminal fitted with a wire seal member is accommodated in a terminal accommodation hole of the housing 1. Next, the square tube forming bodies 11, 12 and the cylindrical forming body 13, of the rear protector 3,
14, the electric wire 2 is inserted from the cut 4 a of the corrugated pipe 4 while the electric wire 2 is surrounded. And corrugated pipe 4
So that the front end of is sandwiched between the cylindrical forming bodies 13 and 14,
The rectangular tube forming bodies 11 and 12 are locked with each other by locking means, and the cylindrical forming bodies 13 and 14 and the corrugated tube 4 are taped together with a tape 5.
And tighten it. Finally, the locking pieces 18 and 19 and the locking arms 20 and 21 of the rear protector 3 are pushed into the housing 1. Thereby, the locking arm 2
0, 21 are engaged with the locking projections of the housing 1, and at the same time, the locking pieces 18, 19 lock the connection terminals.

As described above, in the embodiment, the rear part of the housing 1 is covered by the rear protector 3 and the corrugated pipe 4 so as not to form a gap. Is the housing 1
Can be prevented from entering the interior of the device. Also, since the locking pieces 18 and 19 are provided on the rear protector 3, the housing 1
It is possible to prevent the connection terminal housed in the connector from being pulled out rearward, and it is possible to omit the rear holder in order to increase the locking force of the connection terminal.

[0011]

As described above, in the rear structure of the electric connector according to the present invention, the rear protector into which the electric wire has been inserted is assembled so that no gap is formed at the rear of the housing, and the electric wire is inserted through the rear of the rear protector. Since the flexible tube is assembled without any gap, the rear portion of the housing can be completely hidden, and even if high-pressure fluid is sprayed on the rear portion of the housing, the fluid can be prevented from entering the housing. .

[Brief description of the drawings]

FIG. 1 is a perspective view of an embodiment with a part cut away.

FIG. 2 is a perspective view of a rear protector.

FIG. 3 is a development view of the rear protector.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Housing 2 Electric wire 3 Rear protector 4 Corrugated pipe 4a Cut 5 Tape 11, 12 Square tube forming body 13, 14 Cylindrical forming body 18, 19 Locking piece

Claims (5)

[Claims] 1. A rear structure of an electric connector in which a connection terminal connected to an electric wire is housed in a housing, wherein a rear protector in which the electric wire is inserted so that no gap is formed in a rear portion of the housing, and the electric wire is inserted through the rear protector. A rear structure of the electrical connector, comprising: a flexible tube attached to a rear portion of the rear protector. 2. After inserting the electric wire through the flexible tube,
The rear structure of the electrical connector according to claim 1, wherein the rear protector and the flexible tube are wound around with a tape. 3. The rear protector includes a pair of half-formed bodies that form a cylindrical shape by abutting each other, and connects one side edge of these half-formed bodies in a hinge shape and connects the other side edges to each other. The rear structure of the electric connector according to claim 1, wherein the rear structure is lockable. 4. The rear structure of an electrical connector according to claim 1, wherein the flexible tube is formed by cutting a tubular flexible tube in a longitudinal direction. 5. The rear structure of the electric connector according to claim 1, wherein the rear protector has a locking portion for locking the connection terminal housed in the housing.