JP5696698B2 - Receptacle connector - Google Patents

Description

  The present invention relates to a receptacle connector in which an outer peripheral surface of a fitting tube portion of a shield shell fitting into which a mating plug is inserted and a rear opening are covered with an insulating housing, and more specifically, a contact protruding rearward from the insulating housing. The receptacle part is covered with a shield cover different from the shield shell metal fitting.

  Receptacle connectors used for high-speed data transmission, such as USB connectors used in the USB (Universal Serial Bus) standard for connecting host devices and peripheral devices, have fitting recesses for inserting compatible mating plugs. In this structure, contacts that contact the plug-side contacts of the mating plug are disposed on the surface of the support plate portion of the insulating housing protruding into the fitting recess. Since the mating plug is formed in a metal cylinder shape with the outer peripheral surface at the ground potential, the mating recess of the receptacle connector is also formed by the mating cylinder part of the grounded shield shell fitting, and the plug-side contact and receptacle The contacts of the connector are shielded from the outside and electromagnetically shielded, so that high frequency signals flowing through these contacts are not radiated to the outside or noise is not superimposed from the outside.

  However, since the leg portion of the contact that is soldered to the corresponding pattern of the printed wiring board through the insulating housing that covers the rear of the fitting cylinder portion cannot be shielded by the fitting cylinder portion, it is described in Patent Document 1. In the receptacle connector 100, as shown in FIG. 11, the shield piece 101c is integrally connected to the rear of the fitting tube portion 101a of the shield shell metal fitting 101, the shield piece 101c is bent, and protrudes from the rear of the insulating housing 102. The periphery of the leg 103b of the contact 103 is covered.

  Hereinafter, the conventional receptacle connector 100 will be described. The shield shell metal fitting 101 includes a fitting cylinder portion 101a that is formed in a cylindrical shape into which a mating plug is inserted, and a lower part from the outer peripheral surface of the fitting cylinder portion 101. A pair of grounding legs 101b, an inverted T-shaped shield piece 101c connected to the rear end of the fitting cylinder part 101, and a rear end of the fitting cylinder part 101a on both sides of the shield piece 101c. A pair of pressed pieces 101d and a conductive metal plate are integrally formed.

  The insulating housing 102 includes a housing main body 102a formed in a contour covering the rear opening of the fitting cylinder portion 101a, and a support plate portion 102b protruding from the front surface of the housing main body 102a into the fitting cylinder portion 101a. A pair of positioning protrusions 102c are formed on the plane of the housing main body 102a to sandwich and position the base of the inverted T-shaped shield piece 101c.

  The plurality of contacts 103 are insert-molded at the time of forming the insulating housing 102 and insulated from each other so as to be integrally attached to the insulating housing 102. In the attached state, the front contact portion 103a is a fitting cylinder portion. The rear leg portion 103b protrudes from the rear of the housing main body 102a so as to come into contact with the corresponding contact of the mating plug inserted into the 101, along the bottom surface of the support plate portion 102b.

  As shown in FIG. 12, the assembly of the receptacle connector 100 is performed until the pair of positioning projections 102c abut the rear end of the fitting cylinder portion 101a from the rear of the fitting cylinder portion 101a. After being pushed in, the pair of pressing pieces 101d are bent and positioned downward along the rear surface of the housing body 10a. Further, an inverted T-shaped shield piece 101c protruding backward from between the pair of positioning protrusions 102c is bent downward to cover the rear of the leg portion 103b of the contact 103.

  The assembled receptacle connector 100 is arranged on a printed wiring board (not shown), solders a pair of grounding legs 101b to a grounding pattern of a printed wiring board (not shown), and supports the legs 103b of the plurality of contacts 103. Soldered to the land pattern to be mounted and mounted on the printed wiring board. Accordingly, each contact 103 through which a high-frequency signal flows in contact with the counterpart plug is covered with the fitting cylinder portion 101a and the shield piece 101c of the grounded shield shell metal fitting 101 as shown in FIG. Shielded.

JP 2003-44472 A

  In this conventional receptacle connector 100, one conductive metal plate is press-molded, and a shield piece 101c is formed at the rear end of the fitting tube portion 101a, and the fitting tube portion 101a is pulled forward with respect to the housing body 102a. Since the pair of holding pieces 101d to be fixed is formed, the shield piece 101c cannot be shaped so as to cover the entire leg portions 103b of the plurality of contacts 103 and the solder connection portions thereof, and is an inverted T-shaped shield piece. With only 101c, a sufficient shielding effect cannot be obtained.

  In addition, the fitting tube portion 101a is engaged with the mating plug so that the pair of grounding legs 101b are cut and raised, or the mating plug inserted into the fitting tube portion 101a is not easily pulled out. Since the hole 101e is formed, an opening is formed in a part of the fitting tube portion 101a, and there is a problem that noise enters from the outside through these openings, or unnecessary radiation that leaks a high-frequency signal flowing through the contact 103 to the outside. It was.

  Further, in the receptacle connector 100 for assembling the insulating housing 102 to the fitting cylinder portion 101a, there is a gap between them, and the receptacle connector 100 is inserted from the gap between the fitting cylinder portion 101a and the housing body 102a while the mating plug is not inserted. There is a risk that water droplets or dust may enter the equipment with the. Therefore, when forming the insulating housing, a receptacle connector in which the shield shell metal fitting is insert-molded, the outer peripheral surface of the fitting tube portion and the rear opening are covered with an integrally formed insulating housing, and the inside of the fitting tube portion is sealed is also included. As is known, since the insulating housing covers the periphery of the fitting cylinder, the grounding leg for grounding the fitting cylinder and the shield piece covering the periphery of the contact leg protrude from the insulating housing. The shield shell metal fitting was insert molded, and the mold structure was complicated.

  In addition, since both the receptacle connector 100 and the receptacle connector having a waterproof structure are formed from a single conductive metal plate, the fitting tube portion and the shield piece are separated from the ground leg portion to each portion by the ground pattern of the substrate. As a result, the potential difference occurs due to the flow of high frequency noise, and there is a possibility that a sufficient shielding effect cannot be obtained.

  The present invention has been made in view of such problems, and an object of the present invention is to provide a receptacle connector that reliably electromagnetically shields the entire leg portion of a contact protruding backward from an insulating housing.

  Also provided is a receptacle connector capable of easily connecting a fitting cylindrical portion of a shield shell metal fitting covered with an insulating housing as a waterproof structure to a shield cover that shields a leg portion of a contact and grounding both of them. With the goal.

In order to achieve the above-described object, a receptacle connector according to claim 1 includes a shield shell metal fitting having a fitting cylinder portion fitted onto a mating plug inserted from the front, an outer peripheral surface of the fitting cylinder portion, and a rear opening. An insulating housing having a support plate portion that is integrally attached to the shield shell metal fitting and protrudes forward in the fitting tube portion, and is attached to the insulating housing in an insulated manner, and a contact portion is the support plate portion A plurality of contacts whose legs protrude rearward from the insulating housing, and a shield cover that surrounds the legs of the plurality of contacts, and each of the plurality of contacts has a shield shell grounded around each of the contacts A receptacle connector surrounded by a bracket and a shield cover,
The shield shell fitting and the plurality of contacts are integrally formed with the insulating housing by insert molding to seal the fitting tube portion except for a front opening, and the outer periphery of the fitting tube portion of the insulating housing The exposed portion of the fitting cylinder portion facing outward through an insertion hole formed in a portion covering the surface, and the shield cover attached to the insulating housing facing outward through the insertion hole It is made to contact a part.

  Since the exposed portion of the fitting cylinder portion faces outward through an insertion hole formed in the insulating housing, it can be naturally brought into contact with a shield cover attached to the insulating housing.

  The fitting tube portion of the shield shell metal fitting contacts the shield cover around the contact.

  Since the insulating housing covers the outer surface of the fitting tube portion and the rear opening without gaps by insert molding, the inside of the fitting tube portion is completely sealed except for the front opening.

  The plurality of contacts and the shield shell metal fitting are integrally attached to the insulating housing in the forming process of the insulating housing, and the assembly process can be omitted.

The receptacle connector according to claim 2 , wherein the exposed portion of the fitting tube portion is exposed in the insertion hole of the insulating housing, a contact tongue formed on the shield cover is press-fitted into the insertion hole, and the shield cover is While fixing to the said insulation housing, the said contact tongue piece is made to contact the said exposed part, It is characterized by the above-mentioned.

  In the process of assembling the shield cover into the insulating housing in which the contact tongue piece is press-fitted into the insertion hole of the insulating housing, the shield cover and the fitting cylinder portion are simultaneously electrically connected.

The receptacle connector according to claim 3 is characterized in that a boss projects from the contact tongue piece in a direction facing the exposed portion.

  Since the boss is interposed between the contact tongue piece press-fitted into the insertion hole and the exposed portion of the fitting tube portion, the contact tongue piece is reliably electrically connected to the exposed portion of the fitting tube portion with a predetermined contact pressure.

The receptacle connector according to claim 4 is formed with a lock recess recessed outward in the fitting tube portion, and the lock portion is engaged with a mating plug inserted into the fitting tube portion, and the lock recess is The exposed portion facing outward is the outer peripheral surface of the formed portion of the fitting tube portion.

  Since it is possible to form a locking recess that engages the mating plug without providing an opening in the fitting cylinder, it is possible to provide a waterproof structure in which the fitting cylinder is sealed, and the contact portion of the contact is completely external Shielded.

  By forming a lock recess recessed outwardly in the insertion hole of the insulating housing, its outer peripheral surface can be exposed, and the shield cover and the fitting cylinder can be formed using the structure forming the lock recess. Can be contacted.

  According to invention of Claim 1, it can be made to contact with the fitting cylinder part of a shield shell metal fitting at the process of assembling a shield cover to an insulation housing.

  Further, since the shield cover is formed of a member separate from the shield shell metal fitting having the fitting cylinder portion, the shield cover can be formed in a shape that reliably shields the entire leg portion of the contact and its solder connection portion.

  Moreover, since the fitting cylinder part which acts as a shield conductor around the contact part of the contact contacts the shield cover, the fitting cylinder part can be grounded with a short conductive path.

  Further, if at least one of the shield shell metal fitting and the shield cover is connected to the ground pattern on the printed wiring board, the other can be grounded without providing a ground connection means for the printed wiring board. Furthermore, if both are soldered to the ground pattern and grounded, the ground connection position is increased, and high-frequency noise does not flow through the long conductive path of the ground conductor, so that electromagnetic shielding can be performed more reliably.

Moreover, since the insulating housing covers the outer surface of the fitting tube portion and the rear opening without any gaps by insert molding, the fitting tube portion is completely sealed except for the front opening and embedded in the insulating housing. Can be brought into contact with the shield cover and grounded with a short conductive path.

According to the second aspect of the present invention, the contact to the fitting tube portion and the fixing of the shield cover to the insulating housing can be performed only by press-fitting the contact tongue of the shield cover into the insertion hole.

According to the third aspect of the present invention, the contact tongue piece and the exposed portion of the fitting cylinder portion are brought into contact with each other at a predetermined contact pressure via the boss, so that the shield cover is securely attached to the insulating housing, and vibrations, etc. Even if one side receives a temporary external force, the electrical connection is reliably maintained without interruption.

According to invention of Claim 4 , while being able to set it as the waterproof structure which sealed the inside of a fitting cylinder part, the contact part of a contact can be shielded completely from the outside.

  Moreover, the connection structure which electrically connects the fitting cylinder part covered with the insulating housing to a shield cover by the process process which forms a lock recessed part in a fitting cylinder part is obtained.

  Furthermore, when insert molding the shield shell metal fitting into the insulating housing, since the lock recess recessed outward is formed in the fitting tube portion, the shield shell metal fitting can be firmly positioned and held by the mold, Shield shell metal fittings can be integrally molded in an insulating housing with high accuracy.

1 is a front view of a receptacle connector 1 according to an embodiment of the present invention. 2 is a plan view of the receptacle connector 1. FIG. It is a side view of the receptacle connector 1 attached to the housing | casing of an apparatus. It is the perspective view which looked at the receptacle connector 1 from the front. It is the perspective view which looked at the receptacle connector 1 from back. The shield shell metal fitting 5 and the plurality of contacts 3 before being molded into the insulating housing 2 are (a) a perspective view and (b) a perspective view as seen from the rear, respectively. It is a perspective view which shows the state which attaches the shield cover 4 to the insulation housing 2 which formed the contact 3 and the shield shell metal fitting 5 integrally. It is the sectional view on the AA line of FIG. FIG. 3 is a sectional view taken along line B-B in FIG. 2. It is the perspective view which looked at the receptacle connector 70 which concerns on the 2nd Embodiment of this invention from back. It is the perspective view which looked at the conventional receptacle connector 100 from diagonally backward. 5 is a perspective view showing an assembly process of the receptacle connector 100. FIG.

  Hereinafter, a receptacle connector 1 according to an embodiment of the present invention will be described in detail with reference to FIGS. The receptacle connector 1 is connected to a mating plug (not shown) inserted from the front side shown in FIG. 1. Hereinafter, each part of the receptacle connector 1 will be described with the connecting direction to the mating plug as the front. In the plan view of FIG. 2, the lower part is described as the front, the upper part as the rear, and the left and right direction as the left and right direction.

  As shown in these drawings, the receptacle connector 1 includes an insulating housing 2, a shield shell metal fitting 5 and a plurality of contacts 3 that are integrally formed and attached to the insulating housing 2, and a rear plane and both side surfaces of the insulating housing 2. It is comprised from the shield cover 4 attached along.

  As shown in FIG. 6, the shield shell metal fitting 5 is formed by pressing a conductive thin metal plate having a predetermined strength such as a stainless steel plate, a hexagonal cylindrical fitting cylinder portion 51, and a fitting cylinder And a pair of grounding leg portions 52 integrally connected to both sides on the rear side of the portion 51. The fitting cylinder portion 51 is bent into a hexagonal cylinder shape in which both lower corners of the horizontally long rectangle are inclined lines when viewed from the front, in accordance with the hexagonal shape of a mating plug (not shown) inserted from the front, It has a shape that fits outside the inserted mating plug. In order to maintain this hexagonal cylindrical shape, the contours of the opposite side pieces in the longitudinal direction of the belt-like plate before bending are complementary shapes that mesh with each other when processed into a cylindrical shape.

  A pair of lock recesses 53 (see FIG. 8) that engage with lock protrusions (not shown) of the mating plug to be inserted are formed on the flat surface of the fitting cylinder portion 51 by bulging a part of the flat surface outward. Has been. When the mating plug is inserted into the fitting cylinder 51, the locking projection is fitted into the locking recess 53 and the both engage, and the mating plug connected to the receptacle connector 1 is not easily removed from the fitting cylinder 51. To be held.

  The pair of grounding legs 52 are bent in a crank shape from both sides behind the fitting tube 51 to the left and right, and are formed at corresponding portions of a printed wiring board (not shown) disposed along the bottom surface of the receptacle connector 1. The entire shield shell metal fitting 5 is set to the ground potential by soldering the pattern. As described above, the lock recess 53 that engages with the mating plug is formed without forming an opening in the fitting cylinder 51, so that the contact 3 and the mating plug arranged in the fitting cylinder 51 are The outer periphery around the axis is covered without gaps by the grounded fitting cylinder 51, and is more completely electromagnetically shielded.

  As shown in FIGS. 7 to 9, the insulating housing 2 covers the outer peripheral surface of the fitting cylinder portion 51 using an insulating synthetic resin such as a liquid crystal polymer having excellent heat resistance that does not deform at a high temperature in the reflow furnace. A housing main body 22 that covers the rear opening of the fitting cylinder part 51 while protruding the insulating covering part 21, the pair of grounding leg parts 52, and a rectangle that protrudes forward from the front surface of the housing main body 22 into the fitting cylinder part 51. The plate-like support plate portion 23 is integrally formed.

  The insulating covering portion 21 is formed in a horizontally long rectangle as viewed from the front covering the entire outer peripheral surface (plane, both side surfaces, and bottom surface) of the hexagonal fitting tube portion 51 and covers the front of the fitting tube portion 51. 21a is formed thick by the height of the lock recess 53 bulging outward from the rear covering portion 21b covering the rear. Therefore, the outer surface of the portion where the pair of lock recesses 53 is formed is exposed outwardly along the plane of the front covering portion 21a through the insertion hole 28 formed in the front covering portion 21a, and this exposed portion. Can be used as an externally exposed portion 54 for electrically connecting the shield shell metal fitting 5 to the outside. For example, the shield shell metal fitting 5 can be grounded by contacting with a shield case on the equipment side to which the receptacle connector 1 is attached.

  The housing body 22 continues on the same outer peripheral surface behind the rear covering portion 21b, and the shield cover 4 is attached to the flat surface and both side surfaces from the rear covering portion 21b to the housing main body 22. The difference in thickness between the front covering portion 21a and the rear covering portion 21b is equal to the thickness of the shield cover 4, and therefore, as shown in FIG. 5, the flat surface and both side surfaces of the shield cover 4 are stepped from the front covering portion 21a. There is no, and it continues on the same surface. Moreover, since the insulating housing body 22 insert-molds the shield shell metal fitting 5 as will be described later, the rear opening of the fitting cylinder portion 51 is covered without any gap, and the inside of the fitting cylinder portion 51 is excluded except for the front opening. Sealed. On the other hand, flange portions 24 are respectively formed on the left and right sides of the front covering portion 21a. As shown in FIG. 3, the housing 6 and the flange portion 24 of the device facing the opening in front of the fitting tube portion 51 are formed. The receptacle connector 1 and the housing 6 are sealed even around the opening of the fitting cylinder portion 51 by sandwiching the O-ring 8 between them and attaching the receptacle connector 1 to the device. Therefore, the receptacle connector 1 attached to the housing 6 of the device via the O-ring 8 is open to the front of the fitting tube portion 51 to insert the mating plug. Water droplets and dust do not enter the device from around 51 or the receptacle connector 1, and a waterproof structure of the device can be obtained.

  At the rear of the housing main body 22, contact accommodating portions 25 are formed with a rear end recessed forward, and on both sides of the flat surface of the housing main body 22 from the flat surface to both side surfaces of the fitting cylinder portion 51, respectively. A pair of insertion holes 26 are formed. The pair of insertion holes 26 is a pressing pin for positioning the shield shell metal fitting 5 in the mold by sandwiching both side surfaces of the fitting cylinder portion 51 when insert molding the shield shell metal fitting 5 to be described later into the insulating housing 2. The portions on both side surfaces of the fitting cylinder portion 51 that are formed by the punched holes after the molding and exposed in the insertion holes 26 become the internal exposed portions 55 that contact the shield cover 4.

  The support plate portion 23 projects from the front surface of the housing main body 22 toward the front, which is the connection direction with the mating plug. In addition, a large number of concave grooves 23a are formed at an equal pitch along the front-rear direction on the bottom surface of the support plate portion 23, and a strip-shaped contact portion 31 described later of the contact 3 is exposed in the concave grooves 23a. .

  A plurality (five in this embodiment) of each contact 3 is formed by punching a conductive metal plate such as phosphor bronze to form an elongated band, and is exposed along the above-described concave groove 23a. The portion 31, a fixed portion 32 that is integrally fixed to the housing main body 22, and a leg portion 33 that is pulled out rearward from the rear surface of the housing main body 22 in a crank shape are integrally connected. The leg portions 33 of the respective contacts 3 are drawn out on the same surface in the contact accommodating portion 25 and soldered to a land pattern formed on a corresponding portion of a printed wiring board (not shown).

  The plurality of contacts 3 and shield shell metal fittings 5 configured as described above are positioned and supported in a mold for injection molding the insulating housing 2 in the state shown in FIG. 6, and are integrally attached to the insulating housing 2 by insert molding. . At the time of molding, the insulating housing 2 is molded by being positioned and fixed in the mold by a pressing pin of the mold that forms the insertion hole 26 and a mold that abuts the external exposed portion 54 and the pair of grounding leg portions 52. Even if it receives the flow pressure of the molding resin, it is integrally molded accurately in a state of covering the outer peripheral surface of the fitting cylinder portion 51 and the rear opening without being displaced.

  As shown in FIG. 7, the shield cover 4 is attached from above the insulating housing 2 in which the plurality of contacts 3 and the shield shell metal fitting 5 are insert-molded. The shield cover 4 is formed by bending a conductive metal plate so as to surround the contact accommodating portion 25 on the rear side of the insulating housing 2, and is a gate shape along the plane and both side surfaces of the housing body 22. The mounting plate portion 41 covers the flat surface 25 and the back plate portion 42 covers the rear of the contact housing portion 25.

  The left and right ends of the mounting plate 41 are horizontally bent so that they are flush with the grounding leg 52 in front of the grounding leg 52 of the shield shell metal fitting 5 while being attached to the insulating housing 2 described later. The shield leg 4 is set to the ground potential by facing the same ground pattern of the printed wiring board to which the ground leg 52 is soldered and solder-connecting to the ground pattern. The back plate portion 42 is formed by bending downward from the flat rear end of the mounting plate portion 41 and covers the entire periphery of the contact accommodating portion 25 with the mounting plate portion 41 covering the plane of the housing body 22 and both side surfaces. Yes. Accordingly, the leg 33 of each contact 3 protruding rearward of the housing body 22 and the entire land pattern on the printed wiring board formed at the corresponding portion are covered with the grounded shield cover 4 and electromagnetically shielded. .

  U-shaped notch grooves are formed at left and right corners from the plane of the mounting plate 41 to the left and right side surfaces, respectively, and downward contact tongue pieces 43 are cut and raised. The pair of contact tongues 43 are formed at corresponding portions of the pair of insertion holes 26 formed in the housing body 22, respectively, and are formed in a plate shape slightly wider than the width of the insertion hole 26 in the front-rear direction. Therefore, the contact tongue 43 can be press-fitted into the insertion hole 26 from above, and when the contact tongue 43 of the shield cover 4 is press-fitted into each insertion hole 26, the contact tongue 43 is prevented from coming off in the insertion hole 26. The shield cover 4 is attached to the insulating housing 2 so as to cover the back of the insulating housing 2. At the same time, the contact tongue 43 contacts the internal exposed portion 55 facing the insertion hole 26, and the shield shell metal fitting 5 and the shield cover 4 are electrically connected around the contact 3.

  Here, as shown in FIG. 9, a boss 44 that protrudes in the direction of the internal exposed portion 55 is formed on the surface of the contact tongue piece 43 that faces the internal exposed portion 55 at the tip portion. Thereby, when the contact tongue piece 43 is press-fitted into the insertion hole 26, the boss 44 contacts the internal exposed portion 55 with a high contact pressure, and the shield shell metal fitting 5 and the shield cover 4 are electrically connected with a lower contact resistance.

  As described above, in the present embodiment, the ground leg portion 52 of the shield shell metal fitting 5 and the mounting plate portion 41 of the shield shell metal fitting 5 are respectively soldered to the ground pattern of the printed wiring board to obtain the ground potential, and the contact 3 Since the shield shell metal fitting 5 and the shield cover 4 are brought into contact with each other in the insertion hole 26 around the contact portion 31 and the contact of the mating plug, high-frequency noise is caused by the long conductive path of the shield shell metal fitting 5 and the shield cover 4. High frequency noise can be blocked more effectively without flowing.

  Further, since the shield shell metal fitting 5 and the shield cover 4 naturally come into contact with each other in the process of attaching the shield cover 4 to the insulating housing 2, soldering is not necessarily performed on one of the shield shell metal fitting 5 and the shield cover 4 with the ground pattern of the printed wiring board. It is also possible to ground both the inside and the outside of the insulating housing 2 without providing a grounding means for connection.

  Since the shield shell metal fitting 5 whose outer peripheral surface is covered with the insulating housing 2 faces outward at the external exposed portion 54, it is connected to the ground pattern of the printed wiring board on which the receptacle connector 1 is mounted or the ground terminal on the equipment side. The shield shell metal fitting 5 can be grounded.

  The shield cover 4 and the shield shell metal fitting 5 are not necessarily in contact with each other in the insertion hole 26, and a part of the shield shell metal fitting 5 is exposed to the outer peripheral surface of the insulation housing 2 through the insertion hole formed in the insulation housing 2. Alternatively, the shield cover 4 attached to cover the outer peripheral surface may be brought into contact. Hereinafter, a receptacle connector 70 according to a second embodiment of the present invention in which the shield cover 4 and the shield shell metal fitting 5 are brought into contact with each other using the above-described externally exposed portion will be described with reference to FIG. Since this receptacle connector 70 is only slightly different from the first embodiment in the height of the externally exposed portion, the thickness of the front covering portion, and the shape of the mounting plate portion of the shield cover, The same number is attached | subjected and the description is abbreviate | omitted.

  The thickness of the front covering portion 21a at the portion where the lock concave portion 53 of the fitting cylinder portion 51 is formed is the same as that of the rear covering portion 21b behind the fitting portion 51a. The externally exposed portion 71 that is bulged outwardly and exposed outwardly through the insertion hole 73 of the front covering portion 21a slightly protrudes from the plane of the front covering portion 21a continuous on the same plane as the rear covering portion 21b. ing. On the other hand, the planar shape of the mounting plate portion 72 of the shield cover 4 is a shape that is enlarged forward to cover the flat surface of the front covering portion 21a, which is slightly thinner, as shown in the figure. When the shield cover 4 is attached from above the insulating housing 2 by being press-fitted into the inner wall 26, it comes into contact from above the external exposed portion 71.

  Therefore, according to the receptacle connector 70 according to the second embodiment, the shield cover 4 includes the internal exposed portion 55 exposed in the insertion hole 26 and the external exposed portion 71 exposed in the plane of the front covering portion 21a. Thus, the shield shell metal fitting 5 covered with the insulating housing 2 is brought into contact with the insulating housing 2 to obtain a more reliable shielding effect. In this embodiment, since the external exposed portion 71 comes into contact with the shield cover 4, the internal exposed portion 55 may not necessarily be brought into contact with the shield cover 4 in the insertion hole 26.

  In the above-described embodiment, the left and right side surfaces of the fitting cylinder portion 51 are exposed in the insertion hole 26 to form the internal exposure portion 55. However, the outer peripheral surface of the fitting cylinder portion 51 is not limited to the side surface and is exposed internally. The part 55 may be used. Similarly, the external exposed portions 54 and 71 are not limited to the flat surface side of the fitting cylinder portion 51, but are exposed to the outside through the insertion holes of the insulating housing 2 that covers other outer peripheral surfaces such as the left and right side surfaces. It is good also as a part.

  Further, the shield shell metal fitting 5 and the plurality of contacts 3 are insert-molded in the insulating housing 2 in order to make the inside of the fitting cylinder portion 51 a sealed structure. However, the shield shell metal fitting 5 and the plurality of contacts 3 are receptacle connectors that are assembled by assembling the shield shell metal fitting into the insulating housing. Even if it exists, this invention is applicable.

  Moreover, although the external exposed parts 54 and 71 demonstrated in the example made to face the outer side of the insulation housing 2 using the process which forms the lock | rock recessed part 53, only a part of fitting cylinder part 51 of the insulation housing 2 was demonstrated. It may be formed by protruding outward through the insertion hole.

  The present invention is suitable for a receptacle connector that encloses and shields a contact to be connected to a counterpart plug with a grounded shield plate, and is particularly suitable for a receptacle connector having a waterproof function in which a fitting cylinder portion into which the counterpart plug is inserted is sealed. Yes.

DESCRIPTION OF SYMBOLS 1 Receptacle connector 2 Insulation housing 3 Contact 4 Shield cover 5 Shield shell metal fitting 23 Support plate part 26 Insertion hole 28 Insertion hole 31 Contact part 33 Leg part 43 Contact tongue piece 44 Boss 51 Fitting cylinder part 53 Lock recessed part 55 Internal exposure part ( Exposed part)
54 Externally exposed part (exposed part)
70 Receptacle connector 71 External exposed part (exposed part)

Claims (4)

A shield shell metal fitting having a fitting cylinder portion fitted on a counterpart plug inserted from the front;
An insulating housing that covers an outer peripheral surface and a rear opening of the fitting cylinder part, is integrally attached to the shield shell metal fitting, and has a support plate part protruding forward in the fitting cylinder part;
A plurality of contacts attached to the insulating housing so as to be insulated from each other, a contact portion exposed along the support plate portion, and a leg portion protruding rearward from the insulating housing;
A shield cover surrounding the legs of the plurality of contacts;
A receptacle connector that surrounds each of the plurality of contacts with a grounded shield shell fitting and a shield cover,
The shield shell metal fitting and the plurality of contacts are integrally formed with the insulating housing by insert molding to seal the fitting tube portion except for the front opening,
The exposed portion of the fitting cylinder portion is exposed outward through an insertion hole formed in a portion covering the outer peripheral surface of the fitting cylinder portion of the insulating housing ,
The receptacle connector, wherein the shield cover attached to the insulating housing is brought into contact with the exposed portion facing outward through the insertion hole. While facing the exposed portion of the fitting tube portion in the insertion hole of the insulating housing, press the contact tongue formed on the shield cover into the insertion hole, and fix the shield cover to the insulating housing, The receptacle connector according to claim 1 , wherein the contact tongue piece is brought into contact with the exposed portion. The receptacle connector according to claim 1 , wherein a boss projects from the contact tongue piece in a direction opposite to the exposed portion. The fitting cylinder part in which the lock recess part recessed outward is formed in the fitting cylinder part, and the lock part is engaged with the mating plug inserted into the fitting cylinder part, and the lock recess part is formed. 2. The receptacle connector according to claim 1 , wherein an outer peripheral surface of the portion is the exposed portion facing outward. 3.

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