JP2011146236A - Shielding connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shielding connector preventing plastic deformation of a resilient piece. <P>SOLUTION: In the shielding connector provided with a terminal fitting 10 having a shielded cable 11 connected thereto, a connector housing 30 having a cavity 33 into which the terminal fitting 10 is inserted, a shield shell 60 for surrounding the cavity 33, and resilient pieces 65, with each being equipped with a contact portion 67 which is provided at the end section of the shield shell 60 and is brought into contact with a connecting portion 19B of the shielded cable 11. The resilient piece 65 includes a folded section 66, folded farther toward a rear side than to the contact portion 67, and an L-shaped bent section 70 fitted at a tip side of the folded section 66. The connector housing 30 includes a stepped section 49, which receives the L-shaped bent section 70. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a shield connector including a shield shell accommodated in a connector housing.

  Conventionally, as a shield connector, for example, the one described in Patent Document 1 is known. This shield connector includes a metal shield shell in the connector housing, and an elastic piece that elastically holds a connection portion provided on a braided wire of the shielded electric wire is formed in an end shape of the shield shell in a folded shape. ing. When the terminal fitting connected to the shielded electric wire is attached to the connector housing, the connecting portion is sandwiched between the elastic pieces and becomes electrically conductive to shield the inside of the connector housing.

JP-A-7-263082

  However, in the conventional shielded connector, when the terminal fitting is inserted into the connector housing, the terminal fitting or the shielded wire connecting portion is inserted into the rear end of the elastic piece when the terminal fitting is inserted out of alignment or inserted obliquely. In some cases, the elastic piece is pushed toward the tip in contact with the tip and buckled.

  The present invention has been completed in view of the above circumstances, and an object of the present invention is to provide a shielded connector that prevents elastic pieces from buckling when inserting a terminal fitting into a connector housing. And

  As means for achieving the above-mentioned object, the present invention provides a terminal fitting connected to a shielded electric wire, a connector housing having a cavity into which the terminal fitting is inserted, and accommodated in the connector housing so as to surround the cavity. A metal shield shell, and a contact portion that extends from an end portion of the shield shell on the side where the terminal fitting is inserted into the cavity and contacts a connection portion provided in the shield portion of the shield wire. In the shield connector including the elastic piece, the elastic piece includes a folded portion that is folded outward on the rear side of the cavity from the contact portion, and a center side of the cavity on the distal end side of the folded portion. And an L-shaped bent portion that is bent toward the connector housing, and the connector housing includes the L-shaped bent portion. Where the stepped portion for receiving the front end side of the serial cavity is provided with the features.

  In a shielded connector with such a configuration, when the terminal fitting with the shielded electric wire attached to the connector housing is assembled, if the terminal fitting is inserted with a misalignment or inserted at an angle, the connection of the terminal fitting or shielded electric wire When the elastic piece is pushed forward when the part comes into contact with the folded part of the elastic piece, the L-shaped bent part comes into contact with the stepped part, and as a result, the buckling deformation of the elastic piece is prevented. Can do.

The following configuration may be adopted as an embodiment of the present invention.
The connector housing is formed with a receiving groove extending in the axial direction of the cavity by receiving the folded portion and continuing to the stepped portion. According to such a configuration, a terminal fitting or the like cannot enter between the inner surface of the cavity and the folded portion. Thereby, it can prevent that an elastic piece is extruded toward the center part of a cavity.

  The elastic pieces are provided with projecting pieces that restrict the elastic pieces from excessively bending toward the center of the cavity by abutting against the restricting portions provided on the connector housing on both sides thereof. According to such a configuration, even when the elastic piece is pushed toward the center of the cavity, it is possible to prevent the elastic piece from being bent and deformed due to the protruding piece coming into contact with the restricting portion.

  ADVANTAGE OF THE INVENTION According to this invention, when inserting the terminal metal fitting with which the shield electric wire was mounted | worn in a connector housing, the shield connector which prevents an elastic piece from buckling deformation can be provided.

The front view of the connector housing which is one Embodiment of this invention Side view Rear view Perspective view of shield shell Side sectional view showing the connector housing and terminal fitting before fitting Side sectional view showing the completed state of connector housing and terminal fitting Partial expanded sectional view which shows the state which the terminal metal fitting contacted the folding | returning part.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
The connector of this embodiment includes a female terminal fitting 10 to which a shielded electric wire 11 is connected, a synthetic resin connector housing 30 to which the terminal fitting 10 is attached, and a metal shield shell accommodated in the connector housing 30. 60. In the following description, “front” and “rear” refer to the front side and the rear side in the operation direction for fitting the connector of the present invention to the mating connector.

  The terminal fitting 10 is formed with a connecting portion 12 that forms a substantially rectangular tube shape in front of the terminal fitting 10 and connects a tab-like terminal (not shown) attached to the mating connector from the front side, and a shield wire 11 and the rear side thereof. Barrels 13 and 14 are provided for connecting the two. The shielded electric wire 11 has an inner covering portion 16 on the outer side of the core wire 15, and a braided wire 17 and an outer covering portion 18 corresponding to the shield portion are covered on the outer side. The shield wire 11 is connected to the terminal fitting 10 in a conductive state by caulking with the barrel 13 of the terminal fitting 10 with the core wire 15 at the end thereof being completely exposed. Then, only the outer covering portion 18 is peeled off at the rear position so that the braided wire 17 is reversed in the rear direction, and then the inverted braided wire 17 is centered on the metal shell ring 19 having a hexagonal rectangular tube shape. The braided wire 17 and the shell ring 19 are connected in a conductive state by caulking with a caulking portion 19 </ b> A provided in the portion, and the shell ring 19 is attached to the shielded electric wire 11. Further, an underlay ring 20 is attached in advance to the inside of the braided wire 17 so that the caulking force is not absorbed by the elasticity of the outer covering portion 18.

  The connector housing 30 as a whole has a substantially rectangular parallelepiped shape, and the front and rear are formed in an open state. The connector housing 30 is formed with a hood portion 31 from the central portion to the front opening edge, and the outer wall of the hood portion 31 is formed in a widened state over the entire circumference as compared with the other outer walls. Two auxiliary terminal holes 32 that form a cylindrical shape and communicate with the inside and outside of the hood portion 31 are formed in a state along the connector housing 30 extending in the rearward direction on the rear side surface generated by the widening.

  The inner surface of the connector housing 30 located behind the hood portion 31 is formed to be slightly narrower at a position slightly ahead of the rear opening edge, and the terminal fitting 10 is attached to the center extending to the inside of the hood portion 31. Two cavities 33 are formed side by side. The rear portions of both cavities 33 are constituted by a support frame 34 that is slightly larger than the front and has a circular inner surface so that the shell ring 19 can be inserted. The support frame 34 has a direction orthogonal to the arrangement of the cavities 33. An opening 35 having a large opening is formed.

  The cavity 33 is formed with a lance 36 that protrudes slightly on the inner surface in front of the cavity 33 and prevents the terminal fitting 10 from coming off, so that it can be bent and deformed. The lance 36 bends and deforms outside the cavity 33 when the terminal fitting 10 is inserted from the rear opening edge. When the terminal fitting 10 is inserted to a predetermined position, the lance 36 is released from the bending deformation and is engaged with the terminal fitting 10. As a result, the terminal fitting 10 is prevented from being detached from the connector housing 30.

  The hood portion 31 is formed with a fitting portion 37 in which the mating connector is accommodated and fitted. The fitting portion 37 is located at the center in the hood portion 31 and is formed in a state extending straight from the rear wall 38 of the hood portion 31 toward the front opening edge. The outer surface of the fitting portion 37 is in a state of being thinned in two stages from the back wall 38 in the forward direction, and a seal attachment portion 39 for attaching the seal member 40 in a loop shape is formed on the outer surface located at the center thereof. ing. A gap hole 42 extending from the stepped portion 41 to the rear end of the hood portion 31 and penetrating through the back wall 38 of the hood portion 31 is formed in the stepped portion 41 located between the rear outer surface and the central outer surface. Has been. A total of six gap holes 42 are formed, two on the longitudinal direction side of the fitting portion 37 and two on the lateral direction side, one on the lateral direction side, and four sides.

  On the front end face of the fitting portion 37, two terminal insertion holes 43 for inserting the terminals of the mating connector are formed side by side at positions shifted slightly outward from the center. In the region generated by the displacement of the terminal insertion hole 43, two ends of the auxiliary terminal hole 32 extending from the outside of the hood portion 31 are formed in a state orthogonal to the terminal insertion hole 43. And from the front end surface of the fitting part 37, after the terminal metal fitting 10 is latched by the lance, the deformation | transformation control part 44A which prevents the lance 36 elastically deforming outside, and the seal member attached to the seal attachment part 39 A retainer 44 provided with a stop portion 44B for preventing 40 from being detached is attached.

  An engaging portion that engages with an engaging claw formed on the outer surface of the mating connector when a mating connector (not shown) is inserted into the hood portion 31 at one end of the wall surface facing the fitting portion 37 in the hood portion 31. 45 </ b> A is formed, and the engaging portion 45 </ b> A is provided at the tip of the lock piece 45 with a support portion 46 formed integrally with the back wall 38 of the hood portion 31 as a fulcrum. The locking piece 45 is formed such that its rear end portion extends rearward from the hood portion 31 of the connector housing 30 and is exposed from the connector housing 30, and the rear end portion is pressed to bend and deform the locking piece 45 to deform the mating connector. It is the operation part 45B which cancels | releases an engagement state.

  On the other hand, the shield shell 60 has a slightly flat rectangular tube shape as a whole. The shield shell 60 is accommodated in the connector housing 30 so that the front portion thereof surrounds the fitting portion 37 of the connector housing 30 and the rear portion thereof surrounds the support frame 34. The front end portion passes through the gap hole 42 of the connector housing 30 and is disposed at substantially the same position as the front end portion of the fitting portion 37, and the rear end portion is slightly closer to the front than the rear edge portion of the connector housing 30. Deploy.

  The shield shell 60 is formed by bending two ends of a rectangular metal plate punched by pressing at right angles to form two elongated frame pieces 61 having a U-shaped cross section, and the frame pieces 61 face each other. It is composed by matching. The two pieces are integrated by inserting the fitting piece 61A provided with one frame piece 61 into the fitting frame 61B provided on the corresponding other frame piece.

  The front part of the shield shell 60 surrounding the fitting part 37 of the connector housing 30 is in a state in which the tip is folded back, and the front part of the shield shell 60 extends straight from the front opening edge to the rear on both sides in the longitudinal direction. The front slit 62 having a length of about 1/3 in the front-rear direction of the shield shell 60 is formed at three locations, the center and both ends, and the front slit 62 formed at both ends of the longitudinal surface on both sides in the lateral direction. Are formed at two locations on both ends. The rear edge portion of the front slit 62 abuts against the stepped portion 41 located between the gap holes 42 when the shield shell 60 is inserted into the connector housing 30 to prevent the shield shell 60 from coming off in the forward direction. ing.

  At the center in the front-rear direction of the shield shell 60, two locking pieces 63 extending inward and obliquely forward are formed on both sides in the longitudinal direction with a gap therebetween. When the shield shell 60 is inserted into the connector housing 30, the locking piece 63 is pushed outward by the rear edge of the gap hole 42 and elastically deformed. When the shield shell 60 is inserted to a predetermined position, the latch piece 63 is elastically deformed. Is released, and is latched to the latching portion 47 formed on the inner side of the rear edge of the gap hole 42 to prevent it from coming out backward.

  An elastic piece 65 having the same length as the front slit 62 is formed integrally with the shield shell 60 at the rear part of the shield shell 60. The elastic pieces 65 are provided on both surfaces of the shield shell 60 in the longitudinal direction, and are configured to bend in a mountain shape toward the center of the cavity 33. The elastic piece 65 is disposed in the opening 35 of the support frame 34 that is the rear portion of the cavity 33 of the connector housing 30, thereby constituting the cavity 33 of the rear portion. A contact portion 67 is formed at the apex of the chevron of the elastic piece 65 so that when the terminal fitting 10 is inserted into the connector housing 30, the connection portion 19 </ b> B formed on the rear portion of the shell ring 19 is elastically sandwiched and contacted. The distance between the contact portions 67 that sandwich the connection portion 19B is set to be slightly smaller than the outer diameter of the shell ring 19 attached to the shielded electric wire 11. Thus, when the terminal fitting 10 is completely inserted into the cavity 33 of the connector housing 30, the connecting portion 19 </ b> B of the shell ring 19 attached to the shielded electric wire 11 is paired with a pair of elastic members in the space where the shell ring 19 is disposed in the cavity 33. The contact portion 67 of the piece 65 is elastically sandwiched and the connection portion 19B and the contact portion 67 are electrically connected. Then, the shield shell 60 in the connector housing 30 and the braided wire 17 of the shielded electric wire 11 are electrically connected, and the inside is shielded from the shielded electric wire 11 to the connector housing 30.

Now, a folded portion 66 that is folded back toward the front side toward the outside is formed slightly outside the shield shell 60 at the rear end portion of the elastic piece 65, and straight from the folded portion 66 to the front direction on the front side. An extended folded piece 68 is provided. The folded pieces 68 are formed with projecting pieces 69 projecting from both side surfaces thereof, and the lateral width of the folded pieces 68 including the projecting pieces 69 is formed to be larger than the interval between the openings 35 of the support frame 34 located inside thereof. ing. An L-shaped bent portion 70 that is bent toward the center of the cavity 33 is formed at the tip of the folded piece 68 at a position outside the contact portion 67.
On the other hand, the connector housing 30 is formed with a receiving groove 48 extending from the rear edge to the front end surface of the L-shaped bent portion 70 by widening the inner surface of the rear portion. The step portion 49 formed between the inner surface and the other inner surface is formed to face the L-shaped bent portion 70 with a slight gap. In addition, a restricting portion that prevents the elastic piece 65 from being bent and deformed toward the center of the cavity 33 by contacting the protruding piece 69 at the edge of the support frame 34 that is separated from the protruding piece 69 by a slight gap. 50 is formed.

The shield connector of the present embodiment has such a configuration, and the operation when the terminal fitting 10 is assembled to the connector housing 30 will be described next.
When assembling the connector housing 30 and the terminal fitting 10, first, as shown in FIGS. 6 and 7, the terminal fitting 10 is inserted into the cavity 33 formed inside from the rear opening edge of the connector housing 30.

However, when the terminal fitting 10 is inserted with a misalignment with respect to the cavity 33 or is inserted from an oblique direction, the tip of the terminal fitting 10 comes into contact with the folded portion 66 of the elastic piece 65. When the terminal fitting 10 is further pushed in and the elastic piece 65 is pushed forward, the L-shaped bent portion 70 of the elastic piece 65 is connected to the connector at a position where the elastic piece 65 is slightly buckled, as shown in FIG. It will be in a state of being held in contact with the stepped portion 49 of the housing 30. Thereby, it is possible to prevent the elastic piece 65 from being buckled.
Further, when the tip of the terminal fitting 10 or the front end surface of the shell ring 19 abuts the folded portion 66 of the elastic piece 65 obliquely from the rear, and the elastic piece 65 is pushed out toward the center of the cavity 33, The protruding piece 69 abuts on the restricting portion 50 and restricts the elastic piece 65 from being bent further.

<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.

(1) Although the female terminal fitting 10 is assembled to the connector housing 30 in the above embodiment, the present invention can also be applied to a male terminal fitting.
(2) In the above-described embodiment, the housing groove 48 is provided in the rear portion of the connector housing 30. However, the present invention is not limited to such an embodiment, and the connector housing 30 is not provided with a housing groove. May be.
(3) In the above embodiment, the auxiliary terminal hole 22 is provided. However, the present invention is not limited to such an embodiment, and the auxiliary terminal hole 22 may not be provided.
(4) In the above embodiment, the protruding pieces 69 are provided on both sides of the elastic piece 65. However, the present invention is not limited to such a mode, and the protruding pieces are provided on both sides of the elastic piece 65. May not be provided.

10: Terminal fitting 11: Shielded wire 17: Braided wire (shield part)
19B: Connection part 30: Connector housing 33: Cavity 49: Step part 60: Shield shell 65: Elastic piece 66: Folding part 67: Contact part 70: L-shaped bending part

Claims (3)

A terminal fitting connected to a shielded wire, a connector housing having a cavity into which the terminal fitting is inserted, a metal shield shell accommodated in the connector housing so as to surround the cavity, and the shield shell In the shield connector including an elastic piece including a contact portion extending from an end portion on the side where the terminal fitting is inserted into the cavity and contacting a connection portion provided in a shield portion of the shielded electric wire,
The elastic piece includes a folded portion that is folded outward on the rear side of the cavity with respect to the contact portion, and an L-shaped bent portion that is bent toward the center side of the cavity on the distal end side of the folded portion. Provided,
The connector housing is provided with a stepped portion that receives the L-shaped bent portion on the distal end side of the cavity.   2. The shield connector according to claim 1, wherein the connector housing is formed with an accommodation groove extending in the axial direction of the cavity so as to accommodate the folded-back portion continuously to the stepped portion.   The elastic piece is provided with projecting pieces on both side portions thereof for restricting the elastic piece from being excessively bent toward the center side of the cavity by abutting against a restriction portion provided on the connector housing. The shield connector according to claim 1 or 2, wherein

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