JPH07231192A - Sealed terminal assembling method and its assembly structure - Google Patents

Abstract

PURPOSE:To reduce a number of parts when assembling sealed terminals and accurately connect sealed assembly by a simple working. CONSTITUTION:A connector 31 is received in a rectangular body 51 composed of a box part 53 and a lid part 55 openable and closable, which is closed in the box part 53 and fixed, whereby a sealed assembly 25 is interposed by cutout parts 65a, 65b, 67a, 67b formed in at least either one of the box part 53 and lid part 55 under electric connection condition. When assembling, the connector 31 is stuck to an engagement piece 57 provided in the box part 53 so that the sealed assembly is positioned in the cutout parts 65a, 65b, 67a, 67b, thereafter the lid part 55 is preferably closely fixed to the box part 53.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of assembling a shield braid of a shielded wire and a conductive casing, and an assembling structure thereof.

[0002]

2. Description of the Related Art There is a shielded wire as an electric wire for preventing the influence of electromagnetic interference (EMI), and the shielded wire is grounded by a metal net electric wire (shield braid) which covers the outside. It is shielded from the external electric field. When the connector is interposed in this shield line, the connector is covered with a conductive cover (shield cover). For example, as shown in FIG. 5, at the end of the shielded wire 1, the insulation coating (sheath) 3 is peeled off with an appropriate length, and the exposed shield braid 5 is folded back to the sheath 3 side, while the insulation core wire (Hereinafter, simply referred to as “core wire”) 7 is connected to the terminal 11 of the connector 9. Then, after the connector 9 is set on the shield cover 13a, the shield braid 5 is fixed to the shield cover 13a side by the screws 17 with the fastener 15, and then the shield cover 1 is attached to the shield cover 13a.
3b is put on and fixed by screws 19. Although illustration is omitted, the counterpart connector connected to the connector 9 has the same configuration. Therefore, at the portion where the connector is interposed, the shield covers 13a and 13b, the stopper 1
5, two sets of screws 17 and 19 will be used.

In this way, the shield braid 5 and the shield covers 13a and 13b are assembled in an electrically connected state,
By grounding the shield braid 5, the connectors housed in the shield covers 13a and 13b are shielded from an external electric field, and electromagnetic interference in the connector portion is prevented.

[0004]

However, in the conventional shield terminal assembling structure, the shield braid 5 is fixed with the screws 17 using the fasteners 15, and the shield cover 13 is provided.
Since a and 13b were fixed to each other with the screw 19, the shield covers 13a and 13b, the fastener 15, the screw 17,
Many shield members such as 19 are required, and further, since a total of two sets of shield members are used in each of the fitted connectors 9, the number of parts is increased and the assembling workability is deteriorated. There was a problem. Further, in the conventional assembly structure, the connector 9 has the shield cover 13a,
Since it is not fixed in 13b, when a force in the pulling direction acts on the shielded wire 1 due to vibration of the vehicle or the like, the force acts only on the fixed portion between the shield braid 5 and the fastener 15, and the shield braid 5 is disconnected. However, there was a risk of contact failure. Further, since the shield covers 13a and 13b themselves are not directly fixed to the electronic device or the like, noise absorbed from the outside by the shield covers 13a and 13b is not directly grounded to the body, the ground resistance increases, and the shield effect decreases. was there. The present invention has been made in view of the above circumstances, and provides a shield terminal assembling method and its assembling structure in which the number of parts is reduced and the shield braid can be surely connected by an easy operation, thereby improving the workability. The purpose is to plan.

[0005]

In order to achieve the above object, a method of assembling a shield terminal according to the present invention comprises connecting shield wires to each other through a connector, covering the connector with a conductive casing, and exposing the shield. A method for assembling a shield terminal for connecting a shield braid to a housing, wherein a connector is housed in a housing composed of a box and an openable lid, and the lid is closed and fixed to the box. Then, the shield braid is sandwiched in an electrically connected state by the notch formed in at least one of the box portion and the lid portion. The shield terminal assembly method is to position the shield braid in the notch by fixing the connector to the locking piece provided in the box, and then close and fix the lid to the box. May be. The structure of the shield terminal assembling structure according to the present invention is configured such that a housing for accommodating a connector includes a box portion and an openable / closable lid portion, and when the lid portion is closed, a notch for sandwiching the shield braid of the shield wire The part is formed on at least one of the box part and the lid part.
Further, the structure of the shield terminal assembling structure may be such that the box portion is provided with a locking piece for positioning and fixing the connector so that the shield braid coincides with the cutout portion.

[0006]

In the shield terminal assembling method, the connector is housed in the housing and the lid is closed and fixed, so that the shield braid is formed by the notch formed in at least one of the box portion and the lid portion. It is clamped in an electrically connected state. In the shield terminal assembly structure, the housing is composed of a box portion and a lid portion, the shield braid is sandwiched by at least a notch formed in either the box portion or the lid portion, and the housing and the shield braid Connections can be made with a small number of parts. Further, in the case where the locking piece is provided, the connector is fixed to the locking piece before the lid is closed, and the shield braid is surely positioned in the notch before the sandwiching of the shield braid when the lid is closed. Will be done.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the shield terminal assembling method and the assembling structure thereof according to the present invention will be described in detail below with reference to the drawings. 1 is a cross-sectional view showing the shield terminal assembling structure of the present invention, FIG. 2 is a front view of a casing used in the shield terminal assembling structure of the present invention as viewed from the central axis direction of the shield wire, and FIG. 3 is shown in FIG. FIG. 4 is a side view of the housing, and FIG. 4 is a plan view of the housing shown in FIG. As shown in FIG. 1, at the end portion of the shielded wire 21, the insulation coating 23 is peeled off, and a metal net electric wire (shield braid) 25 is folded back to the insulation coating 23 side. A male terminal 29 is crimped to the tip of one core wire 27a extended from the terminal, and the male terminal 29 is housed in the terminal housing chamber 35 of the female housing 33 of the connector 31. The male terminal 29 accommodated in the terminal accommodating chamber 35 is locked to the lance 37 and pressed by a rear holder (not shown) attached to the female housing 33 from the rear portion of the rubber plug 39 to be doubly locked. Has been done. Core wire 27a and terminal accommodating chamber 3
A waterproof property is secured between the inner circumference of the core 5 and the inner circumference of the core 5 by a rubber plug 39 inserted in close contact with the outer circumference of the core wire 27a.

On the other hand, also at the end portion of the other shielded wire 21, the insulating coating 23 is peeled off and the shield braid 25 is folded back as described above. Then, the female terminal 41 is crimped to the tip of the core wire 27b extended from the terminal,
The female terminal 41 is housed in the terminal housing chamber 45 of the male housing 43 of the connector 31. The female terminal 41 accommodated in the terminal accommodating chamber 45 is locked to the lance 47 and pressed by a rear holder (not shown) attached to the male housing 43 from the rear part of the rubber plug 39 to be doubly locked. Has been done. Between the core wire 27b and the inner circumference of the terminal accommodating chamber 45, the rubber plug 39 assures waterproofness as described above. In this way, the ends of the shielded wire 21 to which the female housing 33 and the male housing 43 are attached are connected to each other in a waterproof structure by fitting the female housing 33 and the male housing 43. The waterproof connection structure described above is configured by using the conventional connector 31 of a known technique.

By the way, the connector 31 to which the shield wire 21 is connected is covered with a conductive casing 51. The housing 51 includes a box portion 53 that houses the connector 31 and a box portion 5
A lid portion 55 is provided on the opening side of 3 so as to be openable and closable. The box portion 53 and the lid portion 55 may either be integrally connected via a hinge or separably connected via a locking piece. Also, the box portion 53 and the lid portion 5
In addition to being made of a metal material, 5 may be made of a resin material plated with a conductive material, a conductive resin material, or the like as long as it has conductivity.

An engaging piece 5 facing the bottom of the box 53 is provided.
7 and the contact piece 59 are provided upright, and the locking piece 57 and the contact piece 59 sandwich the connector 31 in the central axis direction of the shield wire 21. In the connector 31 sandwiched between the locking piece 57 and the abutting piece 59, the recess 31a is locked to the locking piece 57,
It is fixed to the box portion 53. Therefore, the connector 31 fixed to the locking piece 57 and the abutting piece 59 is restricted in movement of the shield wire 21 in the central axis direction.

Further, the inner height dimension of the housing 51 matches the height dimension of the connector 31 when the lid 55 is closed. That is, the connector 31 is attached to the locking piece 5
7 is disposed between the contact piece 59 and the lid portion 55, and the lid portion 55 is closed, the connector 31 is pressed against the bottom portion of the box portion 53, and at the same time when the lid portion 55 is closed, the connector piece 57 and the contact portion 59 are closed. It is supposed to be fixed. Note that the connector 31 is fixed to the box portion 53 in addition to the above-described closing of the lid portion 55, and is also performed by directly pressing the connector 31 between the locking piece 57 and the contact piece 59 by hand. Of course it's okay. As shown in FIG. 2, a fixing plate 6 having an engaging hole on the side of the lid 55 with respect to the hinge.
1 is formed, and the fixing plate 61 engages with the protrusion 63 (see FIG. 3) of the box portion 53 when the lid portion 55 is closed.

As shown in FIG. 2, semi-elliptical notches 65a (65b) are formed at both ends of the box portion 53, and as shown in FIG. 4, engaging pieces 57 are provided at the notches 65a and 65b. The shielded wires 21 (for example, two shielded wires 21 in this embodiment) of the connector 31 fixed to the contact piece 59 are arranged. On the other hand, the lid 55 is formed with notches 67a and 67b facing the notches 65a and 65b of the box 53, and the notches 67a and 67b and the notches 65a and 65b.
When the lid 55 is closed, b forms a shield wire insertion / shield braid holding hole (insertion / holding hole) 69 shown in FIG. 2 having an inner diameter slightly smaller than the outer shape of the shield braid 25. That is, when the lid 55 is closed, the shield braid 25 is held in the insertion / holding hole 69, and the box 53 and the lid 55 are electrically connected to the shield braid 25. In addition, the insertion / holding hole 69 is provided with a notch portion independently in either the box portion 53 or the lid portion 55, and an edge portion of the box portion 53 or the lid portion 55 in which the notch portion is not formed,
The shield braid 25 may be sandwiched between the cutout portions that are formed independently.

A conductive tape made of copper tape, aluminum tape or the like is wound around the outer periphery of the shield braid 25, and the conductive tape improves the electrical continuity and holding property between the shield braid 25 and the insertion / holding hole 69. . A fixing bolt 73 is inserted into a fixing hole 71 formed in the box portion 53, and the fixing bolt 73 is screwed to another member (for example, a vehicle body) not shown to fix the housing 51 to the vehicle body. . Therefore, the housing 51
Is directly connected to the vehicle body through the fixing bolt 73. Box 53, lid 55, locking piece 57, contact piece 59, cutouts 65a and 65b, cutout 67
The shield terminal assembling structure according to the present embodiment is configured with a and 67b as main members or portions.

The procedure of the assembling method in the shield terminal assembling structure thus configured will be described. First, the fitted connector 31 is arranged between the locking piece 57 and the contact piece 59 of the box portion 53. Next, the lid 55 is closed, and when the lid 55 contacts the connector 31, the lid 55 is further pressed. By pressing the lid portion 55 that is in contact with the connector 31, the connector 31 is pushed through the lid portion 55, the recess 31a of the connector 31 is locked to the locking piece 57, and the connector 31 is fixed to the box portion 53. To do. In addition, the fixation of the connector 31 is
In addition to closing the lid 55, the connector 31 may be directly pressed by hand as described above.

In the operation of this shield terminal assembling structure, the connector 31 is fixed so that the shield braid 2
5 is positioned in the insertion / holding hole 69, and at the same time when the lid 55 is closed, the shield braid 25 is held in the insertion / holding hole 69. Therefore, the fixing and electrical connection of the connector 31 to the housing 51 can be completed at once by only the assembling operation of closing the lid 55. Further, when the connector 31 is fixed to the housing 51, movement of the shield wire 21 in the central axis direction is restricted,
Even when a force is applied to the shield wire 21 in the pulling direction, the connector 31 abuts the locking piece 57 and the abutment piece 59 to restrict movement (prevent rattling), and the shield braid 25
Therefore, the positional deviation of is prevented. Then, the housing 51
Is fixed to the vehicle body (not shown) by the fixing bolts 73, the shield braid 25 is directly grounded to the vehicle body,
A high shield effect can be obtained.

In the shield terminal assembling method and the assembling structure thereof according to the present embodiment described above, the connection of the shield braid with a small number of parts, which is the object of the present invention, is not only achieved, but also the existing one. Since the connector 31 can be used,
A development / manufacturing cost for manufacturing a new connector does not occur, and a shield terminal assembly structure can be realized at low cost.

[0017]

As described in detail above, according to the shield terminal assembling method of the present invention, the shield braid is formed into the box portion and the lid portion by accommodating the connector in the housing and closing the lid portion. Since it is sandwiched between and, the complicated assembly process such as screwing is eliminated, and the assembly workability can be significantly improved. According to the shield terminal assembly structure of the present invention,
The housing is composed of a box and a lid, and the notch for sandwiching the shield braid is formed in at least one of the box and the lid, so there is little connection between the shield of the connector and the case and the shield braid. It can be done with the number of parts, and the assembly workability can be significantly improved. If the box is provided with a locking piece for positioning and fixing the connector, the connector is fixed to the locking piece before the lid is closed, and the shield braid is positioned in the notch, so that the shield braid and the housing are more secure. Can be connected to.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a shield terminal assembly structure of the present invention.

FIG. 2 is a front view of a casing used in the shield terminal assembling structure of the present invention as seen from the central axis direction of the shield wire.

FIG. 3 is a side view of the housing shown in FIG.

FIG. 4 is a plan view of the housing shown in FIG.

FIG. 5 is an exploded perspective view of a conventional shield terminal assembly structure.

[Explanation of symbols]

 21 shield wire 25 shield braid 31 connector 51 housing 53 box part 55 lid part 57 locking piece 65a, 65b, 67a, 67b notch part

Claims (4)

[Claims] 1. A shield terminal assembling method, comprising connecting shield wires to each other through a connector, covering the connector with a conductive casing, and connecting the exposed shield braid to the casing. The connector is housed in the housing composed of an openable and closable lid part, and the lid part is closed and fixed to the box part so that at least one of the box part and the lid part is formed. A method of assembling a shield terminal, characterized in that the shield braid is sandwiched by the cutout portions in an electrically connected state. 2. The shield braid is positioned in the notch by fixing the connector to a locking piece provided in the box, and then the lid is closed and fixed to the box. The method of assembling a shield terminal according to claim 1, wherein 3. A housing for accommodating the connector comprises a box portion and an openable / closable lid portion, and at least the notch portion for sandwiching the shield braid of the shield wire when the lid portion is closed. Alternatively, the shield terminal assembly structure is characterized in that it is formed on either one of the lid portions. 4. The shield terminal assembling structure according to claim 3, wherein a locking piece for positioning and fixing the connector so that the shield braid is aligned with the cutout portion is provided in the box portion.