JP2014032816A - Receptacle connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a receptacle connector capable of electromagnetically shielding a contact where a high-frequency signal flows with certainty by utilizing a reinforcement metal fitting for protecting the contact from an outer force.SOLUTION: To a reinforcement metal fitting having a reinforcement cover for covering a part of a surface of a protruded plate part, a contact pad exposed to a part of an outer peripheral surface of a housing main body is formed integrally. The contact pad is contacted with a shield shell metal fitting attached along the outer peripheral surface of the housing main body.

Description

  The present invention relates to a receptacle connector in which a periphery of a protruding plate portion where a plurality of contacts are exposed is covered with a cylindrical shield shell metal fitting, and a mating plug is fitted and connected to a fitting recess between the protruding plate portion and the shield shell metal fitting. More particularly, the present invention relates to a receptacle connector that electromagnetically shields a plurality of contacts with a shield shell metal fitting for ground connection.

  A receptacle connector used for high-speed data transmission, such as a USB connector used in the USB (Universal Serial Bus) standard for connecting a host device and peripheral devices, is a cylinder in which the periphery of the protruding plate part where the contact is exposed is grounded The shield shell metal fitting is covered and the contacts through which high-frequency signals flow are blocked from the outside.

  The mating plug to be connected to the receptacle connector has a cylindrical connection portion that fits into a fitting recess between the projection plate portion of the receptacle connector and the shield shell metal fitting, but is inclined with respect to the protruding direction of the projection plate portion. When trying to connect the mating plug from the direction, the cylindrical connecting portion comes into contact with the protruding plate portion or the contact facing the protruding plate portion, which may be deformed or damaged.

  Therefore, there is known a receptacle connector 100 that protects the projecting plate portion 102a and the contact 103 from a mating plug that is attached to the projecting plate portion 102a by attaching the reinforcing cover 101a of the reinforcing metal fitting 101 made of a conductive metal plate to the projecting plate portion 102a. (Patent Document 1). As shown in FIGS. 12 and 13, the conventional receptacle connector 100 is integrally formed by insert molding when an insulating housing 102 including a rectangular plate-like protruding plate portion 102 a and a housing body 102 b is formed. It comprises a plurality of contacts 103 and reinforcing metal fittings 101 to be attached, and a cylindrical shield shell metal fitting 104 assembled along the outer peripheral surface of the housing main body 102b.

  The rectangular plate-like projecting plate portion 102a is integrally projected forward from the housing body 102b in the connecting direction with the mating plug, and a plurality of contacts 103 are arranged in the front-rear direction at a predetermined pitch on the bottom surface side of the projecting plate portion 102a. They are lined up. Further, the side surface and a part of the front surface of the protruding plate portion 102 are covered with a reinforcing cover 101 a in front of the reinforcing metal fitting 101. The cylindrical shield shell metal fitting 104 is assembled along the outer peripheral surface of the housing main body 102b, whereby a fitting recess 105 is formed between the projecting plate portion 102a and the shield shell metal fitting 104, as shown in FIG. The part is solder-connected to a ground pattern having a ground potential of a printed wiring board (not shown) on which the receptacle connector 100 is mounted.

  When a mating plug is inserted from the front into the fitting recess 105 between the projecting plate portion 102a and the shield shell metal fitting 104, a plurality of plug contacts (not shown) of the mating plug come into contact with a plurality of contacts 103 facing the fitting recess 105, respectively. The receptacle connector 100 and the mating plug are connected. When inserting the mating plug, the mating plug that is inserted from the direction that is inclined with respect to the front-rear direction, which is the correct insertion direction, comes into contact with the reinforcing cover 101a that covers a part of the side surface and the front surface of the protruding plate portion 102, The protruding plate portion 102 and the contact 103 are protected from the erroneously inserted mating plug.

Japanese Patent No. 4819109

  According to this conventional receptacle connector 100, the periphery of the contact 103 through which a high-frequency signal flows is surrounded by the shield shell metal fitting 104 having a ground potential, so that it is electromagnetically shielded. In order to prevent the mating plug from being easily pulled out, an engagement hole that engages with the mating plug and an engaging projection that is cut from a part of the shield shell metal fitting 104 are provided, and by forming these engaging portions, In addition, an opening is formed in a part of the shield shell metal fitting 104, and the fitting recess 105 is opened in a state in which the mating plug is not connected. Through these openings, noise enters from the outside or a high-frequency signal flowing through the contact 103 There is a problem that unnecessary radiation leaks to the outside.

  In addition, the above-described receptacle connector 100 is provided with a reinforcing metal fitting 101 that protects the protruding plate portion 102 and the contact 103 from an erroneously inserted mating plug, so that an external force is not applied to the leg portion 103a of the other contact 103. The leg 101b is fixed to the printed wiring board, but a metal plate is used exclusively to act on mechanical external force. It is a potential. Since the reinforcing metal fitting 101 having an unstable potential is arranged close to the contact 103, the characteristic impedance of the high-frequency transmission path flowing through the contact 103 is not stable, which causes the transmission efficiency to deteriorate.

  If the leg 101b of the reinforcing metal fitting 101 is solder-connected to a ground pattern having the ground potential, the characteristic impedance can be stabilized by using the reinforcing metal fitting 101 as a ground potential. For this purpose, the leg 101b is formed on the reinforcing metal fitting 101. In addition to this, it is necessary to wire the ground pattern at a position different from the connection position with the shield shell metal fitting 104, resulting in a new problem that the mounting density of the printed wiring board is lowered.

  Further, since the shield shell metal fitting 104 and the reinforcing metal fitting 101 are connected via the ground pattern on the printed wiring board, the conductive path connecting the two becomes long, and a high frequency noise flows to generate a potential difference. There was a fear that a good shielding effect could not be obtained.

  The present invention has been made in view of such problems, and an object thereof is to provide a receptacle connector that more reliably electromagnetically shields a contact through which a high-frequency signal flows by using a reinforcing metal fitting that protects the contact from external force. To do.

  It is another object of the present invention to provide a receptacle connector that can more reliably perform impedance control of a high-frequency transmission line that flows through a contact using a reinforcing metal fitting that protects the contact from external force.

  To achieve the above object, a receptacle connector according to claim 1 is attached to an insulating housing having a housing body, a projecting plate portion projecting forward from a front surface of the housing body, and the insulating housing. A plurality of contacts whose front contact portions are exposed along the front-rear direction on the flat surface or bottom surface of the projecting plate portion, and are attached to the insulating housing so as to be insulated from the plurality of contacts, and a part of the surface of the projecting plate portion is A reinforcing metal fitting having a covering cover for covering, and a shield shell metal fitting that is attached along the outer peripheral surface of the housing main body and in which a cylindrical fitting recess for inserting a mating plug is formed between the protruding plate portion, A receptacle connector in which a plurality of contacts are surrounded by a shield shell metal fitting connected to the ground, and the reinforcing metal fitting is connected to the reinforcing metal fitting. Formed integrally with the contact pads exposed on part of the outer peripheral surface of the ring body, and wherein the contacting with the shield shell fitting attached along the outer peripheral surface of the housing body.

  The plate-like protruding plate portion and the contact portions of the plurality of contacts exposed to the protruding plate portion are reinforced by a reinforcing cover that covers a part of the surface of the protruding plate portion, and are not deformed even when an unintended external force is applied.

  Since some of the contact pads of the reinforcing metal fitting are exposed at a part of the outer peripheral surface of the housing body, they naturally come into contact with the shield shell metal fitting attached along the outer peripheral surface of the housing main body and are grounded.

  The receptacle connector according to claim 2, wherein the contact pad is exposed along a flat plane or a bottom surface of the housing body, and is inclined integrally from a corresponding portion of the shield shell metal fitting, and is integrally raised. The tongue piece is in elastic contact with the contact pad.

  Since the contact pad is formed close to the reinforcing cover that covers a part of the surface of the protruding plate portion, the contact pad comes into contact with the shield shell metal fitting through a short conductive path.

  Since the contact pad is exposed along the flat surface or bottom surface of the housing body, the contact spring is exposed on the flat surface, and the leaf spring tongue comes into elastic contact with the contact pad on the flat surface. Make electrical connections.

  The receptacle connector according to claim 3 is characterized in that a vertical piece of a contact pad that is curved at a substantially right angle from a front end of a portion exposed along the plane or bottom surface of the housing body is exposed along the front surface of the housing body. To do.

  Even if the contact pad portions that are exposed along the plane or bottom surface of the housing body protrude from these surfaces, the front end of the contact pad is curved at a right angle and continues to the vertical piece. Even when the front end of the contact pad abuts against the shield shell metal fitting when the insulating housing is inserted from, the shield shell metal piece bends outward along the curved surface of the front end, and the shield shell metal fitting is moved along the outer peripheral surface of the housing body. Can be attached.

  The vertical piece of the contact pad is exposed along the front surface of the housing body that is the inner back surface of the fitting recess into which the mating plug is inserted.

  The receptacle connector according to a fourth aspect of the present invention is characterized in that the reinforcing cover covers a bottom surface or a flat surface of the protruding plate portion that separates the plurality of contacts and the protruding plate portion.

  Since the distance between the reinforcing cover grounded via the projecting plate portion and each contact can be set to a constant distance, the characteristic impedance of the high-frequency transmission path of the contact through which the high-frequency signal flows can be adjusted.

  The receptacle connector according to claim 5 is characterized in that the plurality of contacts and the reinforcing metal fitting are integrally formed in an insulating housing.

  The plurality of contacts and the reinforcing metal fitting are integrally attached to the insulating housing in the process of forming the insulating housing.

  According to the first aspect of the present invention, the shield shell metal fitting is assembled to the housing main body without providing a grounding means such as a leg portion for wiring the ground pattern on the printed wiring board or connecting to the wiring pattern. The reinforcing bracket can be naturally grounded in the assembly process.

  Since the reinforcing cover of the grounded reinforcing metal fitting is arranged around the contact closer to the shield shell metal fitting, the contact through which the high-frequency signal flows can be more reliably electromagnetically shielded.

  According to the invention of claim 2, since the reinforcing cover and the contact pad covering a part of the protruding plate portion are parallel or orthogonal, the reinforcing metal fitting having the reinforcing cover and the contact pad can be easily bent from a single conductive metal plate. Can be formed.

  In addition, since the conductive path from the reinforcing cover that electromagnetically shields multiple contacts to the shield shell metal fitting and grounding is short, there is no potential difference due to high frequency noise, and multiple contacts are more reliably electromagnetically shielded. The

  Since the leaf spring tongue piece is brought into elastic contact with the contact pad on the flat surface, the reinforcing bracket is surely electrically connected to the shield shell bracket regardless of whether the outer peripheral surface of the housing body and the contact pad are on the same plane.

  According to invention of Claim 3, even if a contact pad protrudes outward from the plane or bottom face of a housing main body, a shield shell metal fitting can be attached along the outer peripheral surface of a housing main body, without interfering with a contact pad. .

  Further, the vertical piece of the contact pad made of a metal plate is exposed at the inner back surface of the fitting recess, so that it can act as a stopper for the mating plug inserted into the fitting recess, and the mating side to be inserted The insulating housing can be protected from the plug.

  According to the invention of claim 4, the impedance control in which the characteristic impedance of each contact is a predetermined value is facilitated from the shape of the reinforcing cover and the protruding plate portion.

  According to the fifth aspect of the present invention, the plurality of contacts and the reinforcing metal fitting can be attached to the insulating housing in a single molding process of forming the insulating housing without requiring an assembling process to the insulating housing.

1 is a front view of a receptacle connector 1 according to an embodiment of the present invention. 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. 2 is a plan view of the receptacle connector 1. FIG. 2 is a rear view of the receptacle connector 1. FIG. It is the sectional view on the AA line of FIG. It is the BB sectional view taken on the line of FIG. 2 is a perspective view of an insulating housing 2 in which a contact 3 and a reinforcing metal fitting 4 are integrally formed. FIG. It is a top view of the insulation housing 2 which integrally formed the contact 3 and the reinforcement metal fitting 4. FIG. It is CC sectional drawing of FIG. 3 is a perspective view of a reinforcing metal fitting 4. FIG. It is a perspective view of the conventional receptacle connector 100 except the shield shell metal fitting 104. FIG. It is a front view of the conventional 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 the receptacle connector 1 of FIG.

  As shown in these drawings, the receptacle connector 1 includes an insulating housing 2, a plurality of contacts 3 and reinforcing brackets 4 that are integrally attached to the insulating housing 2, and a cylindrical shape that is attached along the outer peripheral surface of the insulating housing 2. The shield shell metal fitting 5 is used. As shown in FIG. 8, the insulating housing 2 is made of an insulating synthetic resin such as a liquid crystal polymer that has excellent heat resistance and does not deform under high temperatures in a reflow furnace. Are integrally formed.

  The left and right side surfaces and the bottom surface of the housing body 21 are continuous with an inclined surface, whereby the outer peripheral surface (planar surface, both side surfaces, and the bottom surface) of the housing body 21 is inclined with the lower corners of the horizontally elongated rectangle as viewed from the front. It has become a hexagon. In addition, a rectangular engagement recess 23 is formed from the center of the plane to the rear surface, and a stopper 24 is provided protruding from the center upward to prevent the shield shell metal fitting 5 from coming off.

  The projecting plate portion 22 projects from the front surface of the housing body 21 toward the front, which is the connection direction with the mating plug, and the flat plate surface side is covered with a later-described reinforcing cover 41 of the reinforcing metal fitting 4. Is called. In addition, a large number of concave grooves 25 are formed at equal pitches along the front-rear direction on the back surface, which is the back surface side. The width of each concave groove 25 is substantially equal to the lateral width of the strip-shaped contact portion 31 of each of the plurality of contacts 3, and the contact portion 31 is exposed in a state where each contact portion 31 is exposed along the inner top surface of each concave groove 25. Positioning.

  Each of the plurality (5 in the present embodiment) of contacts 3 is formed by punching a conductive metal plate such as phosphor bronze and then bending and forming it in the shape of an elongated band as shown in FIG. A contact portion 31 exposed along the inner top surface of the recessed groove 25, a fixed portion 32 that is bent in a crank shape and embedded in the housing body 21, and a leg portion 33 that is drawn backward from the rear surface of the housing body 21. It is connected continuously. The leg 33 of each contact 3 is drawn out on the same plane and soldered to a land pattern formed on a corresponding portion of the printed wiring board (not shown) having the same plane as a surface, thereby corresponding to the printed wiring board. Make electrical connections to the pattern.

  The reinforcing metal fitting 4 is formed by pressing a conductive thin metal plate such as a stainless steel plate and projecting from a rectangular reinforcing cover 41 and a base 41a at the rear of the reinforcing cover 41 to the left and right sides as shown in FIG. A pair of fixed pieces 42, 42, a vertical piece 41 b standing upward from the front end of each fixed piece 42, and a contact pad 43 folded back horizontally from the upper end of the vertical piece 41 b are integrally formed. The The front end of the reinforcing cover 41 is bent at a substantially right angle so as to cover the surface from the plane of the projecting plate portion 22 along the front surface. Further, the lateral width (width in the left-right direction) of the portion of the reinforcing cover 41 that covers the flat surface of the protruding plate portion 22 is slightly narrower than the horizontal width of the protruding plate portion 22. It has been drilled.

  The plurality of contacts 3 and the reinforcing metal fittings 4 configured as described above are insert-molded when the insulating housing 2 is injection-molded, and are integrally attached to the insulating housing 2. During this molding, a part of the molding resin for molding the protruding plate portion 22 flows into the numerous window holes 41c of the reinforcing cover 41 and both sides of the reinforcing cover 41 and hardens, as shown in FIG. The cover 41 is firmly positioned and fixed to the projecting plate portion 22 so as to cover the front surface from the plane of the projecting plate portion 22.

  The base 41 a and the fixing piece 42 of the reinforcing cover 41 are embedded in the housing main body 21 and are fixed to the housing main body 21 integrally. In a state where the fixed piece 42 is fixed to the housing main body 21, the vertical piece 41 b and the contact pad 43 are exposed from the front surface of the housing main body 21 to the plane on both sides of the protruding plate portion 22.

  As described above, in the present embodiment, the reinforcing cover 41 does not cover the side surface of the protruding plate portion 22, but the reinforcing cover 41 is integrally formed so as to be flush with the protruding plate portion 22. Even if the mating plug contacts the side surface of the projecting plate portion 22, the reinforcing cover 41 embedded inside receives the external force from the mating plug, and the contact 3 itself disposed along the projecting plate portion 22 and the bottom surface thereof. No deformation due to external force.

  On the contrary, since the reinforcing cover 41 is not exposed on the side surface of the projecting plate portion 22, the reinforcing cover 41 is not peeled off from the projecting plate portion 22 even if the mating plug contacts from the side of the projecting plate portion 22.

  As shown in FIG. 6, each contact 3 that is insert-molded in the insulating housing 2 is integrally molded with the fixing portion 32 on the housing body 21 and the front end of the contact portion 31 that is bent slightly upward on the protruding plate portion 22. It is insulated from other contacts 3 and reinforcing metal fittings 4 and attached to the insulating housing 2. Since the front end of the contact portion 31 is embedded in the protruding plate portion 22, the contact portion 31 that faces along the concave groove 25 of the protruding plate portion 22 is not peeled off from the bottom surface of the protruding plate portion 22.

  The shield shell metal fitting 5 is attached to the outside of the insulating housing 2 shown in FIGS. 8 to 10 in which the plurality of contacts 3 and the reinforcing metal fitting 4 are integrally attached. As shown in FIG. A cylindrical tubular portion 51 formed by punching and bending a plate, and a cover portion 52 that is connected to the rear of the tubular portion 51 and surrounds the leg portion 33 of the contact 3 protruding rearward from the housing body 21. Yes.

  The cylindrical portion 51 is attached along the outer peripheral surface of the housing main body 21, and the longitudinal direction of a horizontally long rectangular strip plate having a cover portion 52 provided continuously at the rear end thereof extends along the outer peripheral surface of the housing main body 21. And bent into a cylindrical shape. As described above, the outer peripheral surface of the housing main body 21 is a hexagonal shape in which both lower corners of the horizontally long rectangle are inclined when viewed from the front, so that the outline of the cylindrical portion 51 is substantially the same when viewed from the front. It has a hexagonal shape. In order to maintain this hexagonal cylindrical shape, the contours of the opposite side pieces in the longitudinal direction of the strip-shaped plate before bending are complementary shapes that mesh with each other when processed into a cylindrical shape. In the present embodiment, the receptacle connector 1 in which the shield shell metal fitting 5 is attached to the outside of the insulating housing 2 is a completed product. However, only the cylindrical portion 51 of the shield shell metal fitting 5 is insufficient in strength or has a cylindrical shape. When the shape may be developed, the outer periphery of the tubular portion 51 may be further surrounded by another tubular member to form a receptacle connector.

  As will be described later, the cylindrical portion 51 is attached along the outer peripheral surface of the housing main body 21 with the rear end thereof substantially coincident with the rear end of the housing main body 21. Is longer than the entire length of the insulating housing 2 in the same direction, and when attached to the housing body 21, surrounds the entire periphery of the protruding plate portion 22 protruding forward of the housing body 21, and the front end is the front of the protruding plate portion 22. Protrudes up to. A space surrounded by the cylindrical portion 51 projecting forward from the housing body 21 and the front surface of the housing body 21 is a fitting recess 6 that fits into the mating plug inserted from the front.

  A pair of lock holes 53 that are engaged with lock protrusions (not shown) of the mating plug are formed in the plane of the cylindrical portion 51 that constitutes the fitting recess 6. When the mating plug is inserted into the fitting recess 6, the locking protrusion is inserted into the lock hole 53 and the both engage with each other so that the mating plug connected to the receptacle connector 1 does not easily come out of the fitting recess 6. Retained. In front of each lock hole 53 of the cylindrical portion 51, the guide piece 54 is inclined and raised outward from the cylindrical portion 51, and a lock protrusion for inserting and removing the mating plug is provided on the cylindrical portion 51. It is guided so as to slide smoothly without being brought into contact with the front surface which is a vertical surface or the front surface of the lock hole 53. As described above, an opening formed by cutting and raising the lock hole 53 and the guide piece 54 is formed in the plane of the cylindrical portion 51 constituting the fitting recess 6, but a reinforcing cover 41 for reinforcing the protruding plate portion 22 will be described later. Therefore, the grounded reinforcing cover 41 is interposed between the contact 3 and these openings, and the contact 3 is more completely electromagnetically shielded.

  Further, a positioning recess 55 is formed in the plane of the cylindrical portion 51 from the center of the rear end toward the front, and a pair of engaging pieces 56 are provided in the opposite direction from the left and right sides of the positioning recess 55, respectively. Projecting. In the housing main body 21, the front surface of the stopper 24 abuts on the rear surface of the cylindrical portion 51 in the positioning recess 55 to restrict forward movement, and the rear surface of the housing main body 21 in the engagement recess 23 is the engagement recess. The rearward movement is restricted by contact with a pair of engagement pieces 56 bent into the housing 23, and the housing body 21 is positioned.

  On both sides of the cylindrical portion 51 where the planar positioning recess 55 is formed, a leaf spring tongue piece 57 having a front end as a free end is formed by a U-shaped groove cut out in a U shape toward the rear. Yes. The leaf spring tongue 57 is bent in advance from the base end in the central axis direction (inner side) of the cylindrical portion 51 and is formed in a posture inclined in the bending direction toward the front in a free state. A portion where the pair of leaf spring tongues 57 is formed is a portion facing the contact pad 43 exposed on the plane of the housing body 21 when the cylindrical portion 51 is attached to the housing body 21. As shown, when the cylindrical portion 51 is attached to the housing body 21, the pair of leaf spring tongues 57 are brought into elastic contact with the contact pads 43 facing each other.

  The cover portion 52 is formed in a shape in which the bottom surface of the cylindrical portion 51 and the inclined surfaces inclined on both sides thereof are extended rearward as they are, and the lower side and the side of the leg portion 33 of each contact 3 protruding rearward of the housing body 21. It has a shape that covers the direction. On both sides of the rear end of the cover portion 52, a pair of ground leg portions 58 are provided so as to be solder-connected to the ground pattern of the printed wiring board to which the leg portions 33 of the respective contacts 3 are connected. Since the leg portion 33 of each contact 3 is connected to the printed wiring board disposed above, the entire periphery of the leg portion 33 of each contact 3 is surrounded by the grounded cover portion 52 and the printed wiring board. The portion of the leg portion 33 that protrudes rearward from the main body 21 is also electromagnetically shielded.

  When assembling the shield shell metal fitting 5 and the insulating housing 2, the grounding leg 58 of the cover portion 52 and the engagement piece 56 of the tubular portion 51 are in a horizontal posture before bending, and from the rear of the tubular portion 51. The insulating housing 2 is inserted, and the inside of the cylindrical portion 51 is inserted forward until the stopper 24 contacts the inner wall surface in front of the positioning recess 55. At this time, since the leaf spring tongue piece 57 of the cylindrical portion 51 is inclined inward toward the front, it slides along the plane of the contact pad 43 from the upper end of the vertical piece portion 41b, and the insulating housing 2 The contact pad 43 is elastically contacted at a position where insertion into the front is restricted. Therefore, even if the contact pad 43 is exposed in a state of protruding from the flat surface of the housing body 21, the vertical front surface of the contact pad 43 can be reliably inserted to a predetermined position without coming into contact with the end surface of the cylindrical portion 51. .

  At a position where the stopper 24 comes into contact with the rear surface of the cylindrical portion 51 in the positioning recess 55, the pair of engagement pieces 56 are bent into the engagement recess 23 and brought into contact with the rear surface of the housing body 21 in the engagement recess 23. Then, the insulating housing 2 is positioned in the front-rear direction with respect to the shield shell metal fitting 5, and both are assembled. Thereafter, the grounding leg portion 58 of the cover portion 52 is bent upward to complete the assembly of the receptacle connector 1.

  In a state where the receptacle connector 1 is assembled, the reinforcing metal fitting 4 is electrically connected to the shield shell metal fitting 5 at two positions where the leaf spring tongue 57 is elastically contacted with the contact pad 43, and the ground leg 58 of the shield shell metal fitting 5 is provided. Can be grounded without forming a leg portion to be connected to the printed wiring board. Thereby, the reinforcing cover 41 having the ground potential can be disposed close to the contact portion 31 of the contact 3 through which the high-frequency signal flows, and the contact 3 can be more reliably electromagnetically shielded. Further, since the contact portion 31 of each contact 3 is provided with a reinforcing cover 41 that is grounded at equal intervals across the projecting plate portion 22 that is a dielectric, the impedance of the transmission line using the contact 3 as a high-frequency transmission line is stable. To do. In particular, by adjusting the thickness of the protruding plate portion 22 separating the contact 3 and the reinforcing cover 41 and the number and size of the window holes 41c formed in the reinforcing cover 41, the characteristic impedance of the transmission line using the contact 3 as a high-frequency transmission line is adjusted. Can be easily set to a predetermined value.

  Further, in the receptacle connector 1 according to the present embodiment, the vertical piece 41b of the reinforcing metal fitting 4 made of a metal plate faces the front surface of the housing body 21, which is the inner back surface of the fitting recess 6, so that the fitting recess 6 It can act as a stopper for the mating plug to be inserted, and the housing main body 21 and the projecting plate portion 22 made of synthetic resin are protected from the mating plug to be inserted by the abnormal insertion force.

  In the present embodiment, the contact pad 43 is faced along the plane of the housing body 21 and is in contact with the shield shell metal fitting 5 that covers the plane, but on the outer peripheral surface of the housing body 21 to which the shield shell metal fitting 5 is attached. If there is, the contact pad 43 may be exposed at an arbitrary position such as the side surface or the bottom surface, and the reinforcing metal fitting 4 may be brought into contact with the shield shell metal fitting 21.

  Further, from the outer shape of the shield shell metal fitting 21 and the insulating housing 2 according to the present embodiment, the insulating housing 2 is inserted from the rear side to the front side of the cylindrical portion 51 and assembled together. May be inserted into the cylindrical portion 51 for assembly.

  Further, the plurality of contacts 3 or the reinforcing metal fittings 4 may be separately assembled to the insulating housing 2 without being insert-molded in the insulating housing 2.

  The present invention is suitable for a receptacle connector in which a reinforcing metal fitting for protecting a contact or a protruding plate portion from a mating plug is attached to a protruding plate portion in which a contact is disposed in a fitting recess, and particularly for a receptacle connector in which a high-frequency signal flows through the contact. Is suitable.

DESCRIPTION OF SYMBOLS 1 Receptacle connector 2 Insulation housing 21 Housing main body 22 Projection board part 3 Contact 31 Contact part 4 Reinforcement metal fitting 41 Reinforcement cover 41b Vertical piece part 43 Contact pad 5 Shield shell metal fitting 57 Leaf spring tongue piece 6 Fitting recessed part

Claims (5)

An insulating housing having a housing body and a protruding plate portion protruding forward from the front surface of the housing body;
A plurality of contacts attached to the insulating housing so as to be insulated from each other, wherein a front contact portion is exposed along a front-rear direction on a flat surface or a bottom surface of the protruding plate portion;
Reinforcing metal fittings having a reinforcing cover that is insulated from the plurality of contacts and attached to the insulating housing and covers a part of the surface of the protruding plate part;
A shield shell fitting that is attached along the outer peripheral surface of the housing body, and that is formed with a cylindrical fitting recess for inserting a mating plug between the projecting plate portion,
A receptacle connector that surrounds a plurality of contacts with a shield shell metal fitting connected to the ground,
A contact pad exposed on a part of the outer peripheral surface of the housing body is formed integrally with the reinforcing bracket,
A receptacle connector characterized by contacting with the shield shell fitting attached along the outer peripheral surface of the housing body. The contact pad is exposed along a flat plane or a bottom surface of the housing body,
The receptacle connector according to claim 1, wherein a leaf spring tongue piece that is integrally cut and raised inward from a corresponding portion of the shield shell metal fitting makes elastic contact with the contact pad. 3. The contact pad according to claim 2, wherein a vertical piece that is curved at a substantially right angle from a front end of a portion that is exposed along the plane or bottom surface of the housing body is exposed along the front surface of the housing body. Receptacle connector. 4. The receptacle connector according to claim 1, wherein the reinforcing cover covers a bottom surface or a flat surface of the protruding plate portion that separates the plurality of contacts and the protruding plate portion. 5. The receptacle connector according to any one of claims 1 to 4, wherein the plurality of contacts and the reinforcing metal fitting are integrally formed in an insulating housing.

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