JP2015195148A - shield connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accurately and smoothly fit opposing metal shells to each other.SOLUTION: In a shield connector, distal end sides of both metal shells 50 and 80 are fitted to each other, thereby electromagnetically shielding the periphery of the vicinity of a connecting portion between both terminal fittings 20 and 65. On an outer peripheral surface of an inner housing 61 in which the metal shell 80 to be fitted inside between both the metal shells 50 and 80 is mounted, a guide rib 90 is provided which is engaged with a distal end of a contact plate 52 of the metal shell 50 that is fitted outside, for guiding the contact plate 52 to an outer periphery of the metal shell 80 that is fitted inside. The guide rib 90 is formed while extending from a coupling part 71 to at least a position over a distal end of the metal shell 80 that is fitted inside. The guide rib 90 is disposed in such a manner that a position in a width direction orthogonal with an insertion direction in the contact plate 52 of the metal shell 50 that is fitted outside, is in contact with a contact plate 82 of the metal shell 80 that is fitted inside, together with the neighboring guide rib 90.

Description

  The present invention relates to a shield connector.

  Conventionally, what was described in the following patent document 1 is known as an example of a shield connector. The connector housing includes male and female connector housings that are fitted to each other, and each connector housing includes an inner housing that accommodates a female terminal or a male terminal connected to a terminal of a shielded electric wire, and a plurality of ribs. Is supported with a clearance in the radial direction via the connecting portion, in other words, provided in a suspended state, and a metal shell having a slit for escaping the connecting portion is fitted from the rear to the outer periphery of the inner housing, It is in contact with the braided wire of the shielded wire. When both connector housings are fitted, the corresponding male and female terminal fittings are connected to each other, and the front end sides of both metal shells are fitted to each other, covering the vicinity of the connection portion of the terminal fittings and electromagnetically covering them. It is designed to shield.

JP 2004-171832 A

By the way, in order to fit the metal shell to the outer periphery of the inner housing provided in a suspended state via a plurality of connecting portions inside the outer housing, as described above, the connecting portion is released to the front end side of the metal shell. It is necessary to cut a plurality of slits, so that the tip end side of the metal shell is divided into a plurality of contact plates.
On the other hand, among the two metal shells, the metal shell fitted inside is received at the tip end side of the inner housing attached, whereas the metal shell fitted outside is tip end of the inner housing. Therefore, if the contact plate is divided into a plurality of contact plates as described above, the tip of the contact plate may be deformed so as to fall inward, that is, may fall inward.

If the male and female connector housings are fitted in such a state, the inclining contact plate may hit the other contact plate or sink underneath, and the two metal shells may not be properly fitted. there were.
The present invention has been completed based on the above circumstances, and an object thereof is to enable accurate and smooth fitting of opposing metal shells.

  The present invention includes a pair of connector housings that are fitted to each other, and each connector housing includes a plurality of inner housings in which terminal fittings are accommodated and spaced apart in the circumferential direction with respect to the inner periphery of the outer housing. A cylindrical metal shell that is supported with a clearance through a connecting portion and has a slit formed on the outer periphery of the inner housing, the tip side of which is divided into a plurality of contact plates by cutting a slit that escapes the connecting portion. When both connector housings are fitted, the terminal fittings facing each other are connected to each other, and the two metal shells are connected to each other while the tip ends of the two metal shells are fitted to each other. In a shielded connector that covers the vicinity of the portion and is electromagnetically shielded, the metal shell that is fitted inside is attached to the metal shell. The outer peripheral surface of the inner housing is engaged with the front end of the contact plate of the metal shell that is fitted to the outside when the two connector housings are fitted, and the contact plate is fitted to the inner side. A guide rib for guiding the outer periphery of the metal shell is provided, and the guide rib is formed to extend from the connecting portion to a position beyond at least a tip of the metal shell fitted inside. The position of the metal shell fitted to the outside in the width direction perpendicular to the insertion direction of the contact plate on the contact plate is both on the contact plate of the metal shell fitted on the inside and the adjacent guide rib. It is characterized by being placed so that it touches.

Even if the contact plate of the outer metal shell is tilted inward, the tip of the contact plate engages with the guide rib provided on the inner housing to which the inner metal shell is mounted, so that the inner metal Both metal shells are fitted together while being guided to the outer periphery of the shell. Therefore, when the two connector housings are fitted, the opposing metal shells can be fitted accurately and smoothly without interfering with each other, and the fitting operation of the connector housing can be performed accurately and efficiently.
Since the guide rib is formed in a form extending from the connecting portion to a position beyond at least the tip of the inner metal shell, the guide rib contacts and separates in the front-rear direction without using a slide mold. Molding can be performed only with a mold, which can contribute to a reduction in manufacturing cost. Further, when the inner metal shell is mounted on the inner housing, the metal shell can be mounted smoothly by having the side edge of the contact plate of the metal shell along the side surface of the guide rib.

The following configuration may also be used.
(1) The guide ribs run along one side edge of the contact plate in the inner metal shell and into the inner surface side of the side edge portion on the same side of the contact plate in the opposite metal shell. It is formed as follows.
Since the guide rib is provided in a form along only one side edge of each contact plate of the inner metal shell, the reduction of the width dimension of the contact plate is minimized, and the deterioration of the shielding function is suppressed. Is done.

(2) The height of the guide rib is approximately equal to the thickness of the front end of the inner metal shell in the contact plate.
After the contact plate of the outer metal shell rides on the guide rib, the two metal shells are fitted to each other while being smoothly guided to the outer periphery of the inner metal shell.

  According to the present invention, metal shells mounted to face a pair of connector housings can be fitted accurately and smoothly.

1 is a side view of a male and female connector according to an embodiment of the present invention before fitting. Front view of female connector Longitudinal sectional view showing mounting operation of female metal shell Top view of female metal shell Front view of male connector Longitudinal sectional view before mating of male and female connectors (cross sectional view taken along line VI-VI in FIGS. 2 and 5) Plan sectional view before mating of male and female connectors (sectional view taken along line VII-VII in FIGS. 2 and 5) Longitudinal cross section during mating of male and female connectors Longitudinal section when mating is complete Cross sectional view Partially cutaway plan view of male connector showing mating state of male and female metal shells Sectional drawing which shows fitting operation of male and female metal shells Sectional view showing erroneous mating detection operation Sectional drawing which shows fitting operation | movement of the male and female metal shell in a comparative example

<Embodiment>
An embodiment of the present invention will be described with reference to FIGS.
In this embodiment, as shown in FIG. 1, a pair of male and female connectors F and M are provided. In the following, the connectors F and M will be described with the fitting surface side as the front.
As shown in FIGS. 6 and 7, the female connector F includes two female housings 30 (hereinafter referred to as a female housing 30) and two terminals that are fixed to the end of the shielded electric wire 10 and accommodated in the female housing 30. A female terminal 20 and a female metal shell 50 are provided.

As shown in FIG. 6, the shielded electric wire 10 has a known structure in which a core wire 11, an insulating inner skin 12, a braided wire 13, and an insulating outer skin 14 are arranged concentrically from the inside. The end of the braided wire 13 is rolled back and covered on the end of the insulating outer sheath 14, and is processed in a state in which it is caulked and fixed by a metal cylinder 15 having an enlarged diameter portion 15A on the rear end side. .
The female terminal 20 is formed by pressing a metal plate, has a rectangular tube-shaped connecting portion 21 connected to a male terminal 65 of a later-described counterpart, and caulked a barrel 22 provided at the rear end. The rubber plug 25 is also crimped to the end of the shielded electric wire 10.

  The female housing 30 is made of a synthetic resin, and roughly comprises an inner housing 31 (including a front retainer 31A) and an outer housing 32 (including a seal presser 32A) as shown in FIGS. ing. As shown in FIG. 2, the inner housing 31 is formed in a horizontally long and substantially rectangular cross section, and two cavities 34 shown in the figure facing in the front-rear direction are formed side by side in the inside. In each cavity 34, the female terminal 20 fixed to the end of the shielded electric wire 10 is inserted from the rear and is locked to a lance 35 provided on the bottom surface, so that the female terminal 20 is in a state of being prevented from coming off. While being accommodated, a rubber plug 25 is fitted to the entrance of the cavity 34.

The outer housing 32 is formed in a rectangular tube shape that is slightly larger than the inner housing 31 so as to cover the rear part of the inner housing 31 from the most part on the rear end side. In the mounting chamber 37 provided on the rear side of the outer housing 32, the metal cylinder 15 that is crimped to the braided wire 13 of each shielded electric wire 10 is accommodated.
A collective rubber plug 38 having a seal hole 38A through which the shielded electric wire 10 is tightly inserted is fitted at the rear end of the mounting chamber 37 and is prevented from being detached by the rear holder 39.

  A female metal shell 50 is fitted on the outer periphery of the inner housing 31. Therefore, as shown in FIG. 3, the insertion space of the female metal shell 50 that forms a horizontally long rectangular ring between the outer peripheral surface of the rear end portion of the inner housing 31 and the inner peripheral surface of the front end portion of the outer housing 32. 40, and a portion of the outer peripheral surface of the rear end portion of the inner housing 31 and the inner peripheral surface of the central portion in the longitudinal direction of the outer housing 32 are overlapped with each other at the four corners of the rectangle and the upper and lower sides. The inner housing 31 is supported with a radial clearance through the connecting portion 41 on the inner side of the outer housing 32, that is, supported in a suspended state. ing.

  As shown in FIGS. 3 and 6, the female-side metal shell 50 can be fitted on the outer periphery of the inner housing 31, and the outer housing 32 can be connected to the outer housing 32 from substantially the center in the length direction of the inner housing 31. It is formed in a rectangular tube shape with a laterally long cross section having a length over a position close to the rear end. The female metal shell 50 is configured by assembling two divided shells that are divided into two in the same shape.

On the front side of the female metal shell 50, as shown in FIGS. 3 and 4, in order to support the inner housing 31 in a suspended state at a total of six locations including the four corners and the center width positions of the upper and lower surfaces. A slit 51 is formed by cutting from the front edge to allow each connecting portion 41 provided to be closely inserted and escape. As a result, six contact plates 52 extending in a cantilevered manner are formed between the slits 51.
The front end portion 52A of each contact plate 52 is folded on the outer surface to form a double plate structure, and at the position near the front end of each contact plate 52, it comes into elastic contact with the mating male side metal shell 80 described later. A contact plate 53 is formed. At the base end positions of the contact plates 52 on the upper left side and the lower right side when viewed from the front, a locking claw 54 is cut and raised inward.
On the rear side of the female metal shell 50, a pair of contact pieces 55 for making contact so as to sandwich the metal cylinder 15 (expanded diameter portion 15A) fitted to the braided wire 13 of each shielded electric wire 10 from the upper and lower surfaces thereof. Are formed side by side in the left-right direction.

The female-side metal shell 50 having such a structure is inserted from the rear into the mounting chamber 37 of the outer housing 32 as shown by the arrow in FIG. 3, and each slit 51 is matched to the corresponding connecting portion 41, It is pushed into the insertion space 40. When the inner edge of each slit 51 hits the connecting portion 41, the pushing operation is stopped. At this time, the locking claw 54 bites into the outer surface of the inner housing 31 (see FIG. 6), and the rearward movement is prevented.
When the female-side metal shell 50 is mounted in the normal position, as shown in FIGS. 6 and 7, the six contact plates 52 are extended to a position in front of a predetermined dimension at the front end of the outer housing 32. It is arranged along the inner peripheral surface of the outer housing 32. Further, the contact pieces 55 forming two pairs on the rear side are accommodated in the mounting chamber 37.

  A large hood portion 44 that reaches the tip of the inner housing 31 is further formed on the outer periphery of the outer housing 32. In the bulging portion 44A provided at the center width position on the upper surface of the large hood portion 44, there is a lock that locks the mating connector housing 60 (hereinafter referred to as the male housing 60), which will be described later, in a fitted state An arm 45 is provided.

The male connector M is a device-integrated type, and as shown in FIG. 6, a male housing 60, two male terminals 65, and a male-side metal shell that are integrally projected from the side wall of a synthetic resin device case. 80.
Similarly, the male housing 60 includes an inner housing 61 and an outer housing 62. As shown in FIG. 5, the inner housing 61 is formed in a horizontally long rectangle, and a fitting recess 63 into which the inner housing 31 of the female housing 30 is fitted is formed on the front surface thereof. In the fitting recess 63, two male terminals 65 having a bus bar shape connectable with the female terminal 20 on the female housing 30 side protrude from the back surface in a corresponding arrangement.

  As shown in FIGS. 5 and 6, an outer housing 62 is formed around the inner housing 61 through an insertion space 70 of a male side metal shell 80 described later in detail. A small hood portion 66 having a front opening is formed on the front side of the outer housing 62 so as to extend to a position slightly ahead of the front end of the inner housing 61. The back surface of the small hood portion 66 is located in front of the back surface of the fitting recess 63 of the inner housing 61 by a predetermined dimension, and the female housing 30 is interposed between the outer periphery of the inner housing 61 and the small hood portion 66. The outer housing 32 is fitted. Further, the large hood portion 44 of the female housing 30 can be fitted to the outer periphery of the small hood portion 66, and the lock arm 45 provided in the female housing 30 is located at a position near the front end of the upper surface of the small hood portion 66. A lock protrusion 67 is formed to be engaged.

  A male metal shell 80 is fitted on the outer periphery of the inner housing 61. Therefore, as shown in FIGS. 5 and 6, a horizontally long rectangular ring is formed between the outer peripheral surface of the inner housing 61 and the inner peripheral surface of the rear region of the outer housing 62 rather than the inner surface of the small hood portion 66. The insertion space 70 of the male side metal shell 80 is formed, and the outer peripheral surface of the inner housing 61 and the inner peripheral surface of the outer housing 62 are overlapped with each other at the four corners of the rectangle and the central portions of the upper and lower sides. In six places in total, they are connected by a connecting portion 71 having a long rib shape in the front-rear direction. Therefore, also in the male housing 60, the inner housing 61 is supported in a suspended state via the connecting portion 71 inside the outer housing 62.

  Here, it should be noted that the shape and forming position of the connecting portion 71 provided in the insertion space 70 of the male housing 60 are compared with the connecting portion 41 provided in the insertion space 40 of the female housing 30. As shown in the figure, the two upper and lower connecting portions 71 are substantially half-width shifted forward in the counterclockwise direction in the figure relative to the opposing connecting portion 41 on the female housing 30 side. The front edge in the counterclockwise direction is widened from the end edge of the connecting portion 41 on the opposite side of the female housing 30 by the above-described deviation size.

The male-side metal shell 80 is formed in a rectangular tube shape with a horizontally long cross-section that can be fitted to the outer periphery of the inner housing 61, and is formed, for example, by pressing a metal plate.
On the front side of the male metal shell 80, as shown in FIG. 5, the inner housing 61 is provided to support the inner housing 61 in a suspended state at the four corners and the central width positions of the upper and lower surfaces. A slit 81 is formed by cutting from the front edge to allow each connecting portion 71 to be inserted tightly and escape. As a result, six contact plates 82 extending in a cantilevered manner are formed between the slits 81. As shown in FIG. 6, the front end portion 82A of each contact plate 82 is folded on the inner surface to form a double plate structure. Therefore, the distance between the inner and outer opposing surfaces of the insertion space 70 is set to a dimension comparable to the thickness of the front end portion 82A of the contact plate 82.

Although not shown in detail, the male side metal shell 80 is pushed into the insertion space 70 from the rear side of the male housing 60 in a form in which each slit 81 is matched with the corresponding connecting portion 71, and the inner edge of each slit 81 is When it hits the connecting portion 71, the pushing operation is stopped, and it is also prevented from coming off.
When the male side metal shell 80 is mounted in the normal position, as shown in FIG. 6, the six contact plates 82 are extended to a position in front of the predetermined dimension of the step portion 61 </ b> A at the front end of the inner housing 61. It arrange | positions so that the outer peripheral surface of the inner housing 61 may be followed.

Further, the six contact plates 82 of the male metal shell 80 generally overlap with the corresponding contact plates 52 of the female metal shell 50 described above. However, the connection portions 41 and 71 and thus the slits 51 and 81 are formed. Due to the difference in form, the degree of overlap is irregular.
Specifically, in the contact plates 52 and 82 that form a pair of upper right and lower left in FIG. 5, the width dimensions of both contact plates 52 and 82 are substantially the same, while the inner side (male side metal shell 80) contacts. The plate 82 is displaced by about 1/5 width forward in the counterclockwise direction of the figure. In other words, the side edge of the outer (female metal shell 50) contact plate 52 in the counterclockwise direction is the inner side. A predetermined dimension protrudes backward in the counterclockwise direction from the same side edge of the contact plate 82.

  In the other four pairs of contact plates 52, 82, the inner contact plate 82 is formed narrower. Specifically, the counter-clockwise rear side edge of the inner contact plate 82 is the outer side. In other words, the side edge of the outer contact plate 52 on the rear side in the counterclockwise direction is more than the same side edge of the inner contact plate 82. Predetermined dimensions project backward in the counterclockwise direction.

  Now, as shown in FIGS. 5 and 6, guide ribs 90 are formed to extend forward from the front surfaces of the six connecting portions 71 provided in the insertion space 70 of the male housing 60 described above. . Each guide rib 90 has a width dimension slightly smaller than that of the connecting portion 71 and a height comparable to the thickness of the front end portion 82A (double plate portion) of the contact plate 82 from the center width position on the front surface of the corresponding connecting portion 71. The extending end extends beyond the front end of the contact plate 82 and reaches the position of the stepped portion 61 </ b> A of the inner housing 61. The extending end surface of each guide rib 90 is a tapered surface 91 that has an upward slope toward the rear.

  As shown in FIG. 5, each guide rib 90 has a side edge at the front in the counterclockwise direction at least in the front view, close to a side edge at the rear in the counterclockwise direction of the inner contact plate 82, in other words. The outer contact plate 52 is formed so as to sink into the inner surface side of the protruding side edge portion in the counterclockwise direction rearward.

Then, the effect | action of this embodiment is demonstrated.
In the device-side male connector M, as shown in FIGS. 5 to 7, the two male terminals 65 are arranged in the fitting recess 63 in the lateral direction with respect to the inner housing 61 in the male housing 60, and project within a predetermined dimension. It is mounted in the form. At the same time, when the male side metal shell 80 is inserted into the insertion space 70 from the rear and inserted to the normal position, the tips of the contact plates 82 reach a position that is less than the tips of the guide ribs 90 by a predetermined dimension.

The female connector F is assembled in the following procedure, for example.
An inner housing seal 47 is fitted on the outer circumference of the inner housing 31 and is prevented from coming off by the front retainer 31A, and an outer housing seal 48 is fitted on the outer circumference of the outer housing 32 and is prevented from coming off by the seal presser 32A. Is done.
Next, as shown in FIG. 3, the female side metal shell 50 is inserted from the mounting chamber 37 of the outer housing 32 toward the insertion space 40, and the rear edge of each slit 51 hits the connecting portion 41. The push-in is stopped, and at the same time, it is prevented from coming off and attached. When the female side metal shell 50 is mounted in the normal position, as shown in FIGS. 6 and 7, the six contact plates 52 of the female side metal shell 50 extend to a position before a predetermined dimension at the front end of the outer housing 32. It is arranged along the inner peripheral surface of the outer housing 32 in the extended form.

From this state, the female terminals 20 connected to the ends of the two shielded wires 10 are inserted into the corresponding cavities 34 at the back of the mounting chamber 37, and the female terminals 20 are pushed to a normal position where they hit the front retainer 31A. The rubber plug 25 is blocked by the lance 35 and the rubber plug 25 closes the inlet of the cavity 34. In the meantime, the metal cylinder 15 fitted to the end of the braided wire 13 in the shielded electric wire 10, particularly the upper diameter contact portion 55 which is paired with the enlarged diameter portion 15 </ b> A on the rear end side, is split between the two contact pieces 55. Are electrically connected in a form elastically sandwiching the enlarged diameter portion 15A of the metal cylinder 15.
After that, the collective rubber plug 38 that has been passed through the shielded electric wire 10 is fitted to the rear end of the mounting chamber 37 and is held by the rear holder 39, whereby the assembly of the female connector F is completed.

  When the assembly of the female connector F is completed, the female connector F is fitted toward the mating male connector M, as indicated by the arrows in FIGS. In the middle of the fitting operation, as shown in FIG. 8, the fitting between the male and female metal shells 50 and 80 is started at the timing when the fitting between the opposing male and female terminal fittings 20 and 65 is started. Subsequently, the female housing 30 is fitted to the male housing 60 while deflecting and displacing the lock arm 45. When the female housing 30 is properly fitted, the lock arm 45 is restored and displaced as shown in FIGS. Then, it is locked in the fitted state by engaging with the locking projection 67. In this state, the inner housing 31 of the female housing 30 is completely fitted into the fitting recess 63 of the inner housing 61 of the male housing 60, so that the opposing male and female terminal fittings 20, 65 are fitted and connected. .

At the same time, the six contact plates 52 formed at the front end of the female metal shell 50 are fitted to the outer periphery of each of the six contact plates 52 formed at the front end of the male metal shell 80. The contact plate 53 provided on the contact plate 52 of the side metal shell 50 is elastically pressed against the contact plate 82 of the corresponding male side metal shell 80 on the inside, so that the male and female metal shells 50 and 80 are electrically connected. Connected.
Thereby, the male and female metal shells 50 and 80 are integrally connected from the male terminal 65 to the connecting portion of the male and female terminal fittings 20 and 65 and further to the fitting portion of the metal tube 15 at the end of the shielded electric wire 10. It will be covered.

Here, since the distal end side of the female metal shell 50 is divided into a plurality (six) contact plates 52 via the slits 51, depending on the contact plate 52, the distal end side is deformed so that the tip is inclined inward. That is, it may fall inward.
When the female connector F is fitted to the mating male connector M in the state where there is such a contact plate 52X that is inwardly tilted, as shown in FIG. One side edge of the leading end of the leading end touches the tapered surface 91 of the leading end of the guiding rib 90 formed on the mating inner housing 61, and then climbs on the guiding rib 90 while being elastically deformed outward by ascending the tapered surface 91. Then, as shown in FIG. 5B, it is guided to the tip of the outer surface of the mating contact plate 82.
When the fitting operation is continued, the contact plate 53 is elastically deformed while sliding on the outer surface of the mating contact plate 82, and the male connector M is fitted to the normal position. As shown in FIG. 11, the contact plate 53 is pressed against the contact plate 82 with restoring elasticity, and the contact plate 52 is fitted to the outside of the contact plate 82.

  As described above, according to this embodiment, even if the contact plate 52 of the female metal shell 50 is tilted inward, the inner housing in which the male metal shell 80 is attached to the tip of the contact plate 52. The two metal shells 50 and 80 are fitted together while being guided to the outer periphery of the contact plate 82 of the male-side metal shell 80 by riding on the guide rib 90 provided on 61. That is, when the male and female connector housings 30 and 60 are fitted, the opposing metal shells 50 and 80 can be fitted accurately and smoothly without interfering with each other, and the fitting work of the connectors F and M can be accurately performed. It can be done efficiently.

Since the guide rib 90 is formed in the insertion space 70 of the male metal shell 80 in a form extending forward from the front surface of the connecting portion 71 formed intermittently along the circumferential direction, the guide rib 90 is In forming, it is possible to form only with a forming die that contacts and separates in the front-rear direction without using a slide die, which can contribute to a reduction in manufacturing cost.
Further, when the male side metal shell 80 is inserted into the insertion space 70 and attached to the outer periphery of the inner housing 61, the side edge of the contact plate 82 of the male side metal shell 80 is aligned with the side surface of the guide rib 90. The same male side metal shell 80 can be smoothly mounted without rattling.

Since the guide ribs 90 for guiding the contact plate 52 of the female metal shell 50 on the guide plate are provided along only one side edge of each contact plate 82 of the male metal shell 80, the same contact plate is provided. The reduction of the width dimension of 82 is minimized, and the deterioration of the shielding function is suppressed.
Since the outer surface of the guide rib 90 is formed so as to substantially coincide with the height position of the outer surface of the front end portion 82A of the contact plate 82 of the male side metal shell 80, the contact plate 52 of the female side metal shell 50 is formed of the guide rib. Subsequent to riding on 90, both metal shells 50 and 80 are fitted together while being smoothly guided to the outer periphery of the contact plate 82 of the male metal shell 80.

Further, in this embodiment, it is possible to prevent an erroneous fitting in which both the metal shells 50 and 80 are fitted in a state where the contact plate 82X of the male side metal shell 80 is opened outward and deformed (opened outward). .
For example, as shown in FIG. 14 showing a comparative example, when the guide rib 90X is of a short size intended only to ride on the connection plate 52 of the female metal shell 50, as shown in FIG. In addition, if the contact plate 82X of the male side metal shell 80 is opened outward, there are the following problems.
That is, when the female connector F is fitted to the mating male connector M in a state where there is such an open contact plate 82X, the contact plate of the female metal shell 50 is shown in FIG. The tip of 52 hits the tip of the mating contact plate 82X that is opened outward while sliding on the upper surface of the guide rib 90X, and continues to sink into the inside while further opening the contact plate 82X, as shown in FIG. And When the fitting is further continued, as shown in FIG. 4D, the contact plate 52 bends inward on the back side of the guide rib 90X and sinks into the inside of the contact plate 82X. Is allowed.
In other words, the metal shells 50 and 80 are fitted in a distorted form, but the connectors F and M are fitted in a normal amount.

On the other hand, in this embodiment, as shown in FIG. 13, the guide rib 90 is formed long until the base end side reaches the connecting portion 71 (see FIG. 5).
Therefore, as shown in FIG. 2A, if the contact plate 82X of the male metal shell 80 is opened outward, the female connector F is fitted to the mating male connector M. As shown in FIG. 5B, the contact plate 52 of the female metal shell 50 tries to sink into the inside of the tip of the contact plate 82X that is opened while the tip is in sliding contact with the upper surface of the guide rib 90. However, since the inward bending of the contact plate 52 is restricted by the guide rib 90, as shown in FIG. 5C, the end of the contact plate 52 is still in contact with the end of the mating contact plate 82X. Further advancement of the contact plate 52, that is, further fitting of the connectors F and M is restricted.
Therefore, it is possible to prevent the connectors F and M from being fitted in a normal amount while the two metal shells 50 and 80 are fitted in a distorted form, that is, erroneous fitting.

<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) The dimension in which the tip of the guide rib extends beyond the tip of the contact plate of the metal shell fitted inside is such that the tip of the contact plate of the metal shell fitted outside is the tip of the guide rib first. As long as it contacts, it can set suitably.
(2) In the above embodiment, the case where a tapered surface is formed on the front end surface of the guide rib for the guide is exemplified. However, if there is a guide portion at the tip of the contact plate of the metal shell fitted outside, the guide rib This taper surface may be omitted.

(3) In the above-described embodiment, the case where the guide rib is formed only along one side edge of the contact plate of the inner metal shell is illustrated. A book guide rib may be formed.
(4) The division | segmentation number of the contact plate provided in the front end side of a metal shell is arbitrary.
(5) In the above embodiment, the case where it is applied to a shield connector directly connected to a device has been exemplified. However, a so-called wire-wire type shield connector that fits both male and female connectors connected to the ends of shielded wires. However, the present invention can be similarly applied.

F ... Female connector M ... Male connector 10 ... Shielded wire 20 ... Female terminal (terminal fitting)
30 ... Female housing (connector housing)
DESCRIPTION OF SYMBOLS 31 ... Inner housing 32 ... Outer housing 40 ... Insertion space 41 ... Connection part 50 ... Female side metal shell (metal shell fitted outside)
51 ... Slit 52, 52X ... Contact plate 60 ... Male housing (connector housing)
61 ... Inner housing 62 ... Outer housing 70 ... Insertion space 71 ... Connection part 80 ... Male side metal shell (metal shell fitted inside)
81 ... Slit 82, 82X ... Contact plate 90 ... Guide rib

Claims (3)

A pair of connector housings fitted together,
Each connector housing has an inner housing in which terminal fittings are accommodated supported with a clearance through a plurality of connecting portions arranged at intervals in the circumferential direction with respect to the inner circumference of the outer housing,
On the outer periphery of the inner housing, a slit that allows the connecting part to escape is cut, and a cylindrical metal shell in which the tip side is divided into a plurality of contact plates is mounted from the rear,
When both the connector housings are fitted, the opposing terminal fittings are connected to each other, and the front end sides of the two metal shells are fitted to each other while covering the vicinity of the connection portion of the both terminal fittings and electromagnetic shielding. In the shielded connector,
The contact plate of the metal shell fitted to the outside when the two connector housings are fitted to the outer peripheral surface of the inner housing to which the metal shell fitted to the inside of the two metal shells is mounted. A guide rib for guiding the contact plate to the outer periphery of the metal shell fitted inside is provided,
And this guide rib is extended and formed from the said connection part to the position beyond the front-end | tip of the said metal shell fitted by the said inside at least,
The position of the metal shell fitted to the outside in the width direction perpendicular to the insertion direction of the contact plate is in contact with the contact plate of the metal shell fitted to the inside and the adjacent guide rib. The shield connector is characterized by being arranged as follows. The guide rib is formed along a side edge of one side of the contact plate in the inner metal shell and so as to sink into an inner surface side of a side edge portion on the same side of the contact plate in the outer metal shell. The shield connector according to claim 1, wherein the shield connector is formed. The shield connector according to claim 1 or 2, wherein a height of the guide rib is approximately equal to a thickness of a front end portion of the contact plate of the inner metal shell.

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