JP2006147353A - Connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connector allowing displacement of a terminal fitting to be restricted while miniaturizing it. <P>SOLUTION: This shielded connector 10 is so structured that a terminal positioning recessed part 53 for restricting displacement in a wire extension direction by locking a terminal positioning projection part 34 of the terminal fitting 30 is formed on a cover part 51 of a housing 40; and a positioning hole 67 for restricting displacement in a wire extension direction by locking a wire positioning projection part 28 of an inner ring 26 disposed on the inside periphery side of a shield layer 22 of a shielded wire 20 is formed on a base plate 61 of a shell 60. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a connector.

  Conventionally, there has been known a connector in which a terminal fitting attached to an electric wire is arranged in a terminal accommodating chamber in a housing.

This type is provided with a terminal insertion port on the rear wall (rear end) of the housing, and a terminal fitting can be inserted into the terminal storage chamber from the terminal insertion port, and on the inner wall of the terminal storage chamber. Is provided with a lance that can be bent and deformed in the vertical direction. When the terminal fitting is inserted forward from the terminal insertion port, the lance that contacts the upper portion of the terminal fitting is bent upward and deformed, and the terminal fitting is inserted to a position where it abuts against the front wall of the terminal accommodating chamber. Then, the lance is restored and deformed and locked to the rear end of the terminal fitting, thereby restricting the displacement of the terminal fitting.
Japanese Patent Laid-Open No. 10-092499

  However, when the lance is locked to the terminal fitting and the positional deviation of the terminal fitting is restricted, it is necessary to secure a bending space for the lance and the lance, which hinders miniaturization of the connector. .

  The present invention has been completed based on the above circumstances, and an object of the present invention is to provide a connector capable of regulating the displacement of a terminal fitting while reducing the size.

As a means for achieving the above object, the invention of claim 1 includes a terminal fitting to which an electric wire is attached,
A connector comprising a holder part in which the terminal fitting is disposed and a synthetic resin housing comprising a cover part that covers and fixes the holder part,
The cover portion is characterized in that a terminal positioning portion that is locked with the terminal metal fitting and restricts a positional shift in the electric wire extending direction is formed.

Invention of Claim 2 is a shielded electric wire according to Claim 1, wherein the electric wire is a shielded electric wire in which a shield layer is formed around a covered electric wire having an insulating coating around a core wire,
A metal positioning member that surrounds the covered electric wire and is fixed in conduction with the shield layer;
A metal shell comprising a base member that is in conduction with the positioning member and on which the housing is disposed, and a shield cover that covers the base member in a state in which the housing is housed inside;
The base member is characterized in that an electric wire positioning portion is formed which is engaged with the positioning member and regulates a positional shift in the electric wire extending direction.

  According to a third aspect of the present invention, in the second aspect, the shielded electric wire includes a plurality of the covered electric wires attached to the terminal fitting, and the holder of the housing can accommodate the terminal fitting from above. It is characterized by its construction.

The invention of claim 4 is the one according to claim 2 or claim 3, wherein the positioning member includes an inner ring surrounding the covered electric wire and an outer ring further surrounding the inner ring.
The outer ring is crimped in a state in which a shield layer is arranged between the inner ring and the outer ring, and is in a conductive state with the shield layer.

  According to a fifth aspect of the present invention, in the apparatus according to any one of the second to fourth aspects, the base member is wound around the metal ring so that the shielded electric wire and the base member are separated from each other. It is characterized in that a winding member to be regulated is provided.

The invention of claim 6 is the one according to any one of claims 2 to 5,
A stopper is provided between the wire insertion port of the shell and the outer skin of the shielded wire,
A locking groove is formed on the outer peripheral surface of the stopper, and the opening edge of the wire insertion port is locked in the locking groove.

<Invention of Claim 1>
According to this configuration, even if a pulling force is generated in the wire extending direction, the terminal positioning portion of the cover portion is locked to the terminal fitting, and the positional deviation in the wire extending direction is restricted. Therefore, as compared with the conventional configuration in which the lance is locked to the terminal fitting and the positional deviation of the terminal fitting is regulated, it is not necessary to secure a bending space for the lance and the lance. Can do.

<Invention of Claim 2>
According to this configuration, even if a pulling force is generated in the electric wire extending direction, the electric wire positioning portion of the base member is locked with the positioning member, and the positional deviation in the extending direction of the shielded electric wire is restricted.

<Invention of Claim 3>
When the shielded electric wire has a plurality of covered electric wires, each of the covered electric wires is exposed when connected to the connector. Here, since the exposed portion is in a state where the shield layer is peeled off, it is necessary to make it as short as possible, but each of the terminal fittings attached to such a short covered electric wire, for example, arranged side by side in the housing It is difficult to insert from behind the electric wire housing part. So, according to this structure, the insertion of a terminal metal fitting becomes easy by inserting each covered electric wire into the holder of a housing from upper direction.

<Invention of Claim 4>
According to this configuration, since the outer ring surrounds the inner ring, it is possible to prevent the covered electric wire from being damaged when the outer ring is caulked.

<Invention of Claim 5>
According to this configuration, since the shield cover can be assembled after the base member and the shielded electric wire are assembled first and the wire positioning portion between the base member and the shielded electric wire is positioned, the assembling work is facilitated.

<Invention of Claim 6>
According to this structure, the position shift of an electric wire is prevented by the stopper clamped between a shell and the outer sheath of a shield electric wire.

<Embodiment 1>
An embodiment of the present invention will be described with reference to FIGS.
The connector of the present embodiment is a so-called shield connector 10, and is used, for example, at a connection portion between a shielded electric wire 20 arranged in a current path from a generator to a motor (not shown) and the motor. In the following description, in the front-rear direction, the left side of FIG.

  As shown in FIGS. 1 and 2, the shield connector 10 includes three female terminal fittings 30 to which three covered electric wires 21 exposed at the ends of the shielded electric wires 20 are connected, and three terminal fittings. The housing 40 is made of a synthetic resin that can accommodate 30 and the metal shell 60 that accommodates the entire housing 40 and keeps the inside in a shielded state.

  As shown in FIG. 3A, the terminal fitting 30 is substantially L-shaped, and one end thereof is a rectangular tube portion 31 connected to a male tab (not shown) of the mating terminal fitting 30. The other end is an electric wire connecting portion 32 connected to the end of the covered electric wire 21, and a connecting portion 33 made of a rectangular flat plate is provided between the square tube portion 31 and the electric wire connecting portion 32.

  As shown in FIG. 3B, an elastic contact piece 31 </ b> A that can be bent and deformed to the left and right is formed inside the rectangular tube portion 31 so as to be folded back from the lower end of one side wall (the left wall in FIG. 3). Further, the other side wall (the right wall in the figure) of the rectangular tube portion 31 is doubled, and a male tab is sandwiched between the inner wall 31B and the elastic contact piece 31A, thereby the other side. It is designed to be electrically connected to the connector.

  The wire connection portion 32 is provided with a pressure contact portion 32A and a barrel portion 32B, both of which are open on the side, and are connected to the front and rear, and the core wire portion of each covered wire 21 of the shielded wire 20 is provided in the pressure contact portion 32A. In addition to the pressure contact, the insulation coating of the covered electric wire 21 is caulked to the barrel portion 32B, whereby the covered electric wire 21 and the terminal fitting 30 are fixed.

  The connecting portion 33 is in a posture in which a substantially rectangular flat plate is erected, and the right end (short side) side of FIG. 3A is integrally connected to the wire connecting portion 32 and the lower end (long side) side is It is integrally connected to the rectangular tube portion 31.

  A terminal positioning convex portion 34 that protrudes in a rectangular shape upward is formed at a substantially central portion of the upper end of the connecting portion 33, and this terminal positioning convex portion 34 is related to a terminal positioning concave portion 53 of the cover portion 51 described later. The terminal fitting 30 is positioned by being stopped.

  The shielded electric wire 20 includes three covered electric wires 21 having an insulation coating around the core wire, a substantially cylindrical shield layer 22 that collectively surrounds the three covered electric wires 21 and is configured by a braided wire, It is comprised from the outer skin | cover 23 made from the insulating resin covering the circumference | surroundings of the shield layer 22 (refer FIG. 1, 2). The shield wire 20 has a front end portion of the outer skin 23 peeled off by a predetermined length, and a front end side of the shield layer 22 is peeled off leaving a predetermined length of the shield layer 22 in front of the shield wire 20. The three covered electric wires 21 are branched and exposed so that the end of each covered electric wire 21 is connected to the terminal fitting 30.

  Here, the exposed part of the shield layer 22 is fixed to an annular metal ring 25 (corresponding to the “positioning member” of the present invention), and the metal ring 25 has an inner ring 26 on the inner side and an outer ring 29 on the outer side. It consists of and.

As shown in FIG. 4, the inner ring 26 has an elliptic cylinder shape that is slightly longer in the width direction, and a flange portion 27 that is slightly enlarged in diameter over the entire circumference is formed at the front end portion thereof. Almost the entire area excluding is disposed on the inner peripheral side of the shield layer 22 (see FIG. 1).
Further, the upper and lower end portions (substantially central portion) of the collar portion 27 are formed to project outward in a rectangular shape, and a portion projecting on the lower end side is defined as an electric wire positioning convex portion 28. The electric wire positioning convex portion 28 is locked in a positioning hole 67 of the base plate 61 described later, whereby the electric wire is positioned.

  As shown in FIG. 5, the outer ring 29 has an elliptical cylindrical shape that is slightly wider (larger diameter) than the inner ring 26 and is arranged on the outer peripheral side of the shield layer 22 (see FIG. 1), and is arranged on the outer periphery of the inner ring 26. The shield layer 22 and the metal ring 25 are fixed by crimping with the shield layer 22 interposed therebetween.

  As shown in FIG. 6, the housing 40 is generally L-shaped as a whole, and includes a holder portion 41 that accommodates the three terminal fittings 30 and a cover portion 51 that covers the holder portion 41.

  As shown in FIG. 7, the holder portion 41 has a hood shape with an open upper surface, and a substantially front half portion of the lower surface is a connector connecting portion 42 that protrudes downward, and this connector connecting portion 42 is not illustrated. By connecting with the connection part of the other party connector, the electrical connection between both connectors is achieved.

  As shown in FIG. 8, the inside of the holder portion 41 is formed with three terminal accommodating chambers 43 that can accommodate the terminal fittings 30 side by side across the partition wall 44, and the front portion of each terminal accommodating chamber 43. The side corresponds to the connector connecting portion 42 and is provided with a connecting recess 45 into which the rectangular tube portion 31 of the terminal fitting 30 can be inserted. A tab portion insertion hole 49 into which a male tab of the mating connector can be inserted is formed at the lower end of the connection recess 45, and when the terminal fitting 30 is attached to the terminal accommodating chamber 43, the rectangular tube portion 31 is in contact with the mating connector. It can be electrically connected to a male tab (not shown) of the side connector.

  On the rear wall 41 </ b> A of the holder portion 41, a wire passage recess 46 slightly wider (larger diameter) than the thickness of the covered electric wire 21 is formed for each terminal accommodating chamber 43, and each covering to which the terminal fitting 30 is attached is formed. Each covered electric wire 21 is led out to the outside by fitting the electric wire 21 into the electric wire passage recess 46 from above.

  A pair of engaging holes 47 are provided at the lower end portions of the both side walls 41B of the holder portion 41, and the engaging holes 47 engage the engaging claws 57 of the cover portion 51, which will be described later. 51 is fixed in the fitted state.

  As shown in FIGS. 10 and 11, the cover portion 51 has a hood shape with an open bottom surface, a substantially square top plate 52, and a surrounding wall 55 that extends downward from the edge of the top plate 52. It consists of.

  A terminal positioning recess 53 (corresponding to the “terminal positioning portion” of the present invention) is formed on the lower surface of the top plate 52 at a position corresponding to the terminal positioning protrusion 34 of the terminal fitting 30 (see FIG. 9). The terminal positioning protrusions 34 are inserted into the terminal positioning recesses 53, and the terminal fittings 30 are positioned by engaging the protrusions and recesses.

  Of the surrounding wall 55, as shown in FIG. 10, an electric wire holding recess 56 corresponding to the electric wire passage recess 46 is formed on the rear wall, and as shown in FIG. A pair of claws 57 are provided.

  And if the cover part 51 is fitted to the regular position from the upper part of the holder part 41, the covered electric wire 21 will be hold | maintained between both the recessed parts 46 and 56 (refer FIG. 1).

  The shell 60 includes a flat base plate 61 (corresponding to the “base member” of the present invention) on which the housing 40 is placed, and a shield cover 71 that covers the base plate 61.

  As shown in FIG. 12, the base plate 61 is formed by punching a metal flat plate (state shown in FIG. 13), and the front end is a wide portion 62 in which the left and right ends are slightly wider in an arc shape. In addition, an insertion hole 63 that is opened in a rectangular shape is formed in a substantially central portion of the wide portion 62, and the connector connecting portion 42 of the holder portion 41 is inserted into the insertion hole 63. .

  Attachment holes 64 are formed at both end portions of the wide portion 62, and when the base plate 61 and the shield cover 71 are fitted, they can be coaxially aligned with the attachment holes 74 of the attachment portion 73 of the shield cover 71. ing.

  The rear part of the wide part 62 has a predetermined width up to a substantially central part of the base plate 61, and a rear part of the base plate 61 is a reduced diameter part 65 that is reduced in a stepped shape.

  A strip-shaped winding member 66 that protrudes in the width direction at the time of punching and molding (see FIG. 13) is provided substantially in the middle of the reduced diameter portion 65 in the front-rear direction. By winding around the ring 25, the separation between the base plate 61 and the shielded electric wire 20 is regulated.

  Further, a positioning hole 67 is formed in a substantially central portion in the width direction of the reduced diameter portion 65 and slightly forward of the winding member 66, and when the winding member 66 is wound, the wire positioning convex portion 28 of the inner ring 26 is formed. Is inserted into the positioning hole 67, so that the electric wire positioning convex portion 28 is locked in the positioning hole 67 even if a force is applied in the direction in which the shielded electric wire 20 is pulled out.

  A notch 68 is formed at the rear end of the base plate 61 (the rear end of the reduced diameter portion 65). The notch 68 is formed on the rear end of the notch 68. The retaining end 82 is locked.

  The shield cover 71 has a hood shape opened downward (see FIG. 14), and a narrow portion 71A in which both widths of substantially the latter half portion are narrowed in steps corresponding to the reduced diameter portion 65 of the base plate 61. When the base plate 61 is fitted, the entire housing 40 is housed inside and is in a shielded state. At this time, the lower end of the front end portion of the shield cover 71 is aligned with the mounting hole 74 of the mounting portion 73 formed so as to project in both width directions to the mounting hole 64 of the base plate 61 (see FIG. 20).

  As shown in FIG. 14, a wire passage hole 72 having a size corresponding to the shield wire 20 and opened downward is formed on the rear wall of the shield cover 71. The shielded electric wire 20 is led out to the outside in a state where the shielded electric wire 20 is fitted into the hole 72 via the stopper 80.

  As shown in FIG. 16, the stopper 80 has an inverted U shape, and a groove 81 (locking groove) is formed almost entirely on the outer surface (outer peripheral surface), and both end portions are outward. A retaining end 82 that protrudes slightly is formed. Then, when the hole edge 68A of the notch portion 68 of the base plate 61 is engaged with the retaining end portion 82 and the shield cover 71 is covered from above, the hole edge 72A (opening edge) of the shield electric wire through hole 72 of the shield cover 71 is covered. Is inserted into the groove 81 of the stopper 80 and locked.

A procedure for assembling the shield connector 10 will be described.
The shielded electric wire 20 is in a state in which the outer skin 23 at the terminal portion is peeled off by a predetermined length, and the shield layer 22 is left from the end of the outer skin 23 by a predetermined length in the portion where the outer skin 23 is peeled off. The three covered electric wires 21 are exposed.
Here, first, the outer ring 29 was inserted through all the covered electric wires 21 and the shield layer 22, and then the inner ring 26 was inserted through all the covered electric wires 21 from the rear side, leaving only the flange portion 27 of the inner ring 26. Almost the whole is inserted between all the covered electric wires 21 and the shield layer 22 (see FIG. 17).

  Then, the outer ring 29 is arranged around the inner ring 26, and the outer ring 29 is caulked at this position, whereby both the rings 26 and 29 and the shield layer 22 are fixed and the conductive state is maintained.

  Next, the core wire and the insulation coating of each covered electric wire 21 are connected to the terminal fitting 30, and each terminal fitting 30 is accommodated in the corresponding terminal accommodating chamber 43 from above the holder portion 41 as shown in FIG.

  When the cover 51 is fitted from above the holder 41 and the cover 51 is fitted to the normal position, the engagement claw 57 of the cover 51 and the engagement hole 47 of the holder 41 are engaged and fitted. Fixed in state.

  Next, the connector connecting portion 42 of the holder portion 41 passes through the insertion hole 63 of the base plate 61 so that the holder portion 41 comes into contact with the base plate 61 and the inner ring 26 is positioned in the positioning hole 67 of the base plate 61. The convex portion 28 is arranged. Thereby, even if a force in the pulling direction is applied to the shielded electric wire 20, the electric wire positioning convex portion 28 of the inner ring 26 is locked to the hole edge of the positioning hole 67 of the base plate 61, thereby preventing the positional deviation of the shielded electric wire 20. .

  In this state, when the winding member 66 of the base plate 61 is bent to the electric wire side, the winding member 66 is wound around the outer ring 29 and the separation of the base plate 61 is restricted. Thereby, since the shield cover 71 can be assembled after the base plate 61 and the shielded electric wire 20 are assembled first and the base plate 61 and the shielded electric wire 20 are positioned, the assembly operation is facilitated.

  Next, as shown in FIG. 19, the electric wire is sandwiched from the opening side of the stopper 80, and the stopper end 82 of the stopper 80 is engaged with the hole edge 68 </ b> A of the notch 68 of the base plate 61.

  And the shield connector 10 is assembled | attached by covering the shield cover 71 from upper direction (refer FIGS. 20-22).

  The shield connector 10 is connected to, for example, a male connector on the other side provided on the motor side, and is not shown, but is screwed from mounting holes 64 and 74 provided in the shell 60 to thereby secure the motor. It is fixed to the side wall or the like.

  As described above, according to the present embodiment, even if a tensile force is generated in the extending direction of the shielded electric wire 20, the terminal positioning concave portion 53 (terminal positioning portion) of the cover portion 51 is connected to the terminal fitting 30 (terminal positioning convex portion 34 thereof). ) And the positional deviation in the wire extending direction is restricted. Therefore, as compared with the conventional configuration in which the lance is locked to the terminal fitting and the positional deviation of the terminal fitting is regulated, it is not necessary to secure a bending space for the lance and the lance. Can do.

  Even if a tensile force is generated in the wire extending direction, the positioning hole 67 (wire positioning portion) of the base plate 61 (base member) is engaged with the wire positioning convex portion 28 (positioning member) of the inner ring 26 to shield the shielded wire. The positional deviation in the extending direction of 20 is regulated.

  Further, when the shielded electric wire 20 has a plurality of covered electric wires 21, each of the covered electric wires 21 is exposed when connecting to the shield connector 10. Here, since the exposed portion is in a state where the shield layer 22 is peeled off, it is necessary to make it as short as possible. However, the terminal fittings 30 attached to the short covered electric wires 21 are arranged in the housing 40, for example. It is difficult to insert from the rear side of each electric wire accommodating portion (terminal accommodating chamber) provided in. Therefore, according to the present embodiment, each terminal fitting 30 (each covered electric wire 21) is inserted into the holder portion 41 of the housing 40 from above, thereby facilitating the insertion work of the terminal fitting 30.

<Other embodiments>
The present invention 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 of the present invention, and further, within the scope not departing from the gist of the invention other than the following. Various modifications can be made.
(1) Although the terminal fitting 30 is female, it may be one that accommodates a male terminal fitting.

  (2) In this embodiment, the connector is the shield connector 10, but it may be a normal connector that does not have the shell 60, and in this case, for example, the cover portion 51 of the positioning projection 34 of the terminal fitting 30. The terminal fitting 30 can be positioned by engagement with the terminal positioning recess 53.

  (3) The number of the covered electric wires 21 of the shield electric wire 20 may be two or four or more.

  (4) Although the positioning hole 67 of the base plate 61 is penetrated, it may not be penetrated. For example, you may only provide a hollow part.

  (5) Although the terminal positioning convex part 34 of the terminal metal fitting 30 is latched by the terminal positioning concave part 53 of the cover part 51, it is not restricted to this. For example, the terminal metal fitting 30 may be provided with a concave portion and the cover portion may be provided with a convex portion to be locked, and the terminal metal fitting 30 or the cover portion 51 may be formed by other than irregularities (for example, convex or convex). One of these may be locked to the other.

Side sectional view of the shield connector according to this embodiment with the electric wires attached Top view of shield connector with shield cover removed (A) Side view of terminal fitting (B) AA sectional view of terminal fitting (A) Rear view of inner ring (B) BB cross section of inner ring (A) Rear view of outer ring (B) CC sectional view of outer ring Side view of housing Side sectional view of holder Top view of holder Bottom view of cover EE cross section of the cover FF cross section of cover part Top view of base plate Top view of the base plate during molding Shell rear view Bottom view of shield cover Cross section of stopper The figure which shows the state where the terminal metal fitting was attached to the holder part The figure which shows the state where the housing was attached to the base plate Sectional view of shield connector showing stopper attached Top view of shield connector Side view of shield connector Bottom view of shield connector

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Shield connector 20 ... Shield electric wire 21 ... Covered electric wire 22 ... Shield layer 23 ... Outer skin 25 ... Metal ring (positioning member)
26 ... Inner ring 27 ... Ridge part 28 ... Electric wire positioning convex part 29 ... Outer ring 30 ... Terminal metal fitting 33 ... Joint part
34 ... Terminal positioning convex part 40 ... Housing 41 ... Holder part 43 ... Terminal accommodating chamber 51 ... Cover part 52 ... Top plate 53 ... Terminal positioning concave part (terminal positioning part)
60 ... Shell 61 ... Base plate (base member)
66 ... Winding member 67 ... Positioning hole (wire positioning part)
68 ... Notch 71 ... Shield cover 72 ... Electric wire through hole 80 ... Stopper

Claims (6)

A terminal fitting to which the electric wire is attached;
A connector comprising a holder part in which the terminal fitting is disposed and a synthetic resin housing comprising a cover part that covers and fixes the holder part,
The connector, wherein the cover portion is formed with a terminal positioning portion that is locked with the terminal fitting and restricts a positional shift in the electric wire extending direction. The electric wire is a shielded electric wire in which a shield layer is formed around a covered electric wire having an insulation coating around a core wire,
A metal positioning member that surrounds the covered electric wire and is fixed in conduction with the shield layer;
A metal shell comprising a base member that is in conduction with the positioning member and on which the housing is disposed, and a shield cover that covers the base member in a state in which the housing is housed inside;
The connector according to claim 1, wherein the base member is formed with an electric wire positioning portion that is engaged with the positioning member and restricts positional deviation in the electric wire extending direction. 3. The connector according to claim 2, wherein the shielded electric wire is configured such that a plurality of the covered electric wires are respectively attached to the terminal fittings, and the holder of the housing is configured to accommodate the terminal fittings from above. The positioning member includes an inner ring that surrounds the covered electric wire and an outer ring that further surrounds the inner ring.
The said outer ring is crimped in the state by which the shield layer was distribute | arranged between the said inner ring and the said outer ring, and it will be in a conductive state with the said shield layer, The Claim 2 or Claim 3 characterized by the above-mentioned. connector. 5. The winding member that restricts the separation between the shielded electric wire and the base member by being wound around the metal ring is provided on the base member. The connector according to the above. A stopper is provided between the wire insertion port of the shell and the outer skin of the shielded wire,
6. A locking groove is formed on the outer peripheral surface of the stopper, and an opening edge of the wire insertion port is locked in the locking groove. connector.

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