TWI390806B - Socket - Google Patents

Description

socket

The present invention relates to a socket for plugging and unplugging a plurality of plug connectors having different numbers of contacts.

A USB (Universal Serial Bus) connector disclosed in Japanese Laid-Open Patent Publication No. Hei 11-40271, and a connector disclosed in Japanese Laid-Open Patent Publication No. 2002-75510, the connector of the Japanese Patent Publication No. Hei. Wait. The plug connector of the USB connector disclosed in Japanese Laid-Open Patent Publication No. Hei 11-40271 includes a synthetic resin plug main body formed in a flat rectangular parallelepiped shape and a metal formed in a rectangular tube shape to cover the outer peripheral surface of the plug main body. Plug housing. In the plug main body, a fitting recess having a shape of a corner hole having a front opening is recessed, and a plurality of plug contacts (not shown) that are flexible are provided in parallel in the fitting recess.

On the other hand, as shown in Fig. 13, the receptacle connector 301 includes a socket body 330 made of synthetic resin, and the fitting projection 334 protrudes toward the front side and is fitted to the fitting recess of the plug connector. And a metal socket housing 340 covering the outer peripheral surface of the socket body 330. On the side surface (the bottom surface in FIG. 13) of the fitting protrusion 334, a plurality of (five in the illustrated example) socket contacts 310, which are plug contacts of the plug connector, are arranged side by side in the lateral direction. Contact is turned on separately.

However, if the plug housing is connected to the inside of the socket housing 340, the fitting protrusion 334 of the socket housing 340 is fitted into the fitting recess of the plug connector, and as a result, the plug contact and the plug are used. The socket contact 310 is electrically connected in such a manner that the upper and lower directions in FIG. 13 are in contact with each other.

Further, as in the above-described conventional example, when the number of contacts is set to five in terms of specifications, etc., if six or more contacts are required, for example, it is conceivable to arrange the sixth and subsequent ones to the plurality of contacts. The space created by the manner in which the outer casing of the plug connector is enlarged in the longitudinal direction or the lateral direction. At this time, if the shape of the outer casing of the plug connector is matched, the socket housing is enlarged in the longitudinal direction or the lateral direction, and the number of the contacts is connected according to a conventional number (for example, five) of plug connectors, the plug housing and A large gap is created between the socket housings. As a result, in order to connect the plug connector in accordance with the specification, the retaining force of the plug housing of the receptacle connector to the plug housing of the plug connector is weak, and the operability at the time of connection is lowered.

The present invention has been made in view of the above circumstances, and an object of the invention is to provide a socket capable of connecting a plurality of types of plug connectors having different numbers of contacts, and the workability at the time of connection is not lowered.

The present invention is a socket for selectively connecting a first plug and a second plug having different contacts. The contact structure of the first plug has only one set of first plug contacts, and the contact structure of the second plug includes a set of additional plug contacts in addition to the set of first plug contacts. Further, the socket of the present invention is composed of an outer casing and an insulating base disposed in the outer casing; the outer casing is formed of a metal material and is composed of an upper wall, a lower wall, and a pair of side walls opposite to each other in the width direction. . At the front end of the casing, a front opening is formed which can share (receive) the size of the first plug and the second plug in common. The base is composed of a first carrier and a second carrier, and the first carrier is provided with a first socket contact that is electrically connected to the first plug contact, and the second carrier is A two-dimensional array of additional socket contacts that are electrically connected to a set of additional plug contacts. The first carrier extends from the second carrier toward the front opening side along the longitudinal direction of the outer casing and is disposed to be adjacent to the upper wall of the outer casing such that the first socket contact is located closer to the upper wall than the lower wall. The first height, the first height position is measured from the lowermost portion of the lower wall. The second carrier is disposed behind the first carrier in the longitudinal direction of the outer casing in a direction away from the front opening, so that the additional socket contact is located rearward of the first socket contact, and the additional socket contact is provided. The arrangement is located closer to the second height of the lower wall than the first socket contact, and the second height is measured from the lowermost portion of the lower wall and is smaller than the first height. A portion of the lower wall is formed with a projection that faces the upper wall and protrudes from the remaining portion of the lower wall, and a first height interval is maintained between the protrusion and the upper wall, and a gap is maintained between the lower wall and the upper wall other than the protrusion. 2 The height pitch is such that the first carrier and the first socket contact are disposed in the first height interval, and the second carrier and the additional socket contact are disposed in the second height pitch.

According to the present invention, since the protrusions hold the connected first plug when the first plug is connected, it is possible to prevent deterioration in workability when the first plug is connected.

In the socket of the present invention, it is preferable that a stopper that covers a width larger than the width of the first carrier and that abuts against the tip end of the first plug is formed at the tip end of the second carrier. According to the present invention, when the first plug is connected, the first plug Since the left and right full systems of the front end are in contact with the front surface of the second carrier, the holding force of the socket when the first plug is connected can be improved, and the workability when the first plug is connected can be further prevented from being lowered.

In the socket of the present invention, it is preferable that the projections are formed at the center in the width direction of the lower wall, and the additional socket contacts are divided into two groups on both sides in the width direction of the first socket contact. According to this configuration, the space inside the casing of the socket can be effectively utilized, so that the size can be reduced.

In the socket of the present invention, it is preferable that the first socket contact is disposed at a center in the width direction of the casing so as to face the protrusion. According to the present invention, the contact pressure with respect to the first socket contact of the first plug contact of the first plug at the time of the first plug connection can be improved.

In the socket of the present invention, it is preferable that the projection continuously extends from the front opening to the rear end of the second carrier. The contact pressure of the first plug contact of the first plug to the first socket contact can be further increased by extending the projection to the rear end of the second carrier.

In the socket of the present invention, it is preferred that the additional socket contacts are urged by the spring. Since the additional plug contact of the second plug is not required to be urged by the spring, it is possible to reduce the height of the socket.

In the socket of the present invention, it is preferable that the additional socket contact is a contact leg which is embedded in the groove formed in the second carrier and extends away from the anchor foot so as to be separated therefrom. The rear end of the anchoring foot extends out to the engaging leg of the rear end of the contact foot, and the terminal leg extending from the rear end of the anchoring foot and protruding from the base, the footing is coupled to impart a contact foot relative to the anchor The foot can be formed in a manner that is freely and elastically deformed by a spring. Thereby, additional socket contacts can be easily formed.

The first socket contacts of the present invention are preferably arranged in accordance with the specifications of the micro USB connector. According to this arrangement, it is possible to prevent the workability at the time of connection from being lowered in the first plug based on the specifications of the micro USB connector.

In the socket 1 of the present embodiment shown in Figs. 1 to 4, the number of contacts of the contacts and the types and sizes of the plug housings are differently pluggable (first plug, second plug) Plug 200). The first plug is an existing plug based on the MicroUSB standard. The second plug 200 is a contact provided in the first plug, and a plug having an additional contact is further added, which is shown in FIG. The vertical direction, the horizontal direction, and the front-rear direction of the plug base 130 of the first plug are as defined in Fig. 7. The vertical direction, the horizontal direction, and the front-rear direction of the second plug 200 are as defined in Fig. 8.

The first plug includes a plurality of (in the present embodiment, five) MicroUSB-compliant first plug contacts 110, a plug base 130 made of an insulating synthetic resin molded article, and a plug base 130 therein. Plug housing (not shown). The plug base 130 holds the first plug contacts 110. In addition, the detailed structure of the plug housing of the first plug and the first plug contact 110 of the first plug will be omitted from description.

In Fig. 7, the plug base 130 of the first plug is shown. As shown in FIG. 7, the plug base portion 130 is formed by integrally forming a terminal carrier 132 having a substantially rectangular parallelepiped shape with an insulating synthetic resin material, and projecting forward from a substantially central portion of the front surface of the terminal carrier 132. The first carrier 134 having a rectangular plate shape. In the front half of the top surface of the terminal carrier 132, a fitting recess 136 is provided which is opened upward and forward and is fitted to the first carrier 36 of the base 30 of the receptacle connector 1 (refer to the first 2, 4)). Further, in the bottom surface of the fitting recess 136 and the rear half of the top surface of the terminal carrier 132, a plurality of (five) grooves 135 extending in the front-rear direction are arranged in parallel at equal intervals in the left-right direction. Then, one of each of the five first plug contacts 110 is inserted into the five grooves 135. Here, between the bottom surface of the first plug contact 110 and the bottom surface of the groove 135, the five first plug contacts 110 are formed to be deflected downward due to the gap therebetween. Further, the terminal piece 150 integrally formed with the first plug contact 110 and connected to the core wire (not shown) of the cable protrudes rearward from the rear end surface of the terminal carrier 132.

A pair of engaging members 160 are provided on both sides in the width direction of the plug base portion 130 of the first plug. An engaging claw 162 is protruded from the front end of the engaging member 160. Further, as will be described later, in the upper wall 42 of the socket housing 40 of the socket 1 of the present embodiment, the engaged portion (engaged hole) 43 is bored, and the engaging claw 162 is detachably engaged therein. (Refer to Figure 4).

Hereinafter, the details of the socket 1 according to the present embodiment will be described with reference to Figs. 1 to 6 . The up-and-down (height) direction, the left-right (width) direction, and the front-back direction of the socket 1 are the up-and-down (height) direction of FIG. 2, the left-right (width) direction of FIG. 2, and the left-right direction of FIG. Further, the upper and lower (height) directions, the right and left (width) directions, and the front-rear direction of the socket 1 are also shown in perspective views of FIGS. 4 and 5. Further, the rear direction of the receptacle connector 1 is the insertion direction of the first plug and the second plug 200.

The socket 1 of the present embodiment shown in FIGS. 1 to 4 is a structure of a MicroUSB specification socket, that is, a plurality of (five in the present embodiment) first socket contacts 10 for supporting the first In addition to the base portion 30 of the socket contact 10 and the socket housing 40 that houses the plurality of first socket contacts 10 and the base portion 30 on the inside, a plurality of (five in the present embodiment) additional socket contacts 20 are provided (see Figure 6).

The base portion 30 shown in Fig. 5 is an insulating synthetic resin molded article, and is composed of a corner column-shaped terminal carrier 32, a columnar second carrier 34, and a rectangular plate-shaped first carrier 36.

In the terminal carrier 32, a plurality of (five) first socket contacts 10 of the MicroUSB standard are inserted and an additional socket contact 20 is mounted. A press-fitting groove 33 (see FIG. 3) is provided on the rear end surface of the terminal carrier 32, and is used to mount the additional socket contact 20 by press-fitting.

The terminal carrier 32 houses a main piece (not shown) of the first socket contact 10, an anchor leg 22 of the additional socket contact 20, and a rear end portion of the contact leg 24. Further, when the second plug 200 to be described later is inserted into the socket 1, the front surface of the terminal carrier 32 functions as a stopper for abutting against the front end of the second plug 200.

As shown in FIG. 5, the second carrier 34 is formed to protrude forward from a slightly upper portion of the front surface of the terminal carrier 32. On the left and right sides of the bottom surface of the second carrier 34, a plurality of (two on the left side and three on the right side) holding grooves for accommodating the additional socket contacts 20 are provided along the front-rear direction of the second carrier. 35. The left and right widths of the second carrier 34 are slightly smaller than the terminal carrier 32, and are formed to be substantially equal to the left and right widths of the plug housing of the first plug and the plug housing 240 of the second plug 200. When the first plug is inserted into the socket 1, the front surface of the second carrier 34 functions as a substantially right and left stopper for abutting the lower end of the plug housing.

The first carrier 36 is formed so as to protrude forward from the upper portion of the front surface of the second carrier 34, and a plurality of (five) first socket contacts 10 are exposed on the bottom surface (see FIGS. 4 to 5). ). The left and right widths and height dimensions of the first carrier 36 are formed to be smaller than the left and right widths and height dimensions of the second carrier 34.

The first socket contact 10 is formed by bending a strip-shaped metal plate into a hook shape, and has a main piece (not shown) inserted into the terminal carrier 32 and extending forward from the front end of the main piece. The contact piece 12 and the terminal piece 14 extending rearward from the rear end of the main piece. Then, the contact pieces 12 of the first socket contact 10 are exposed to the bottom surface of the first carrier 36 so as to be arranged at equal intervals in the left-right direction (see FIGS. 4 to 5).

The additional socket contact 20 shown in Fig. 6 is formed by punching and bending. The additional socket contact 20 is composed of an anchoring leg 22 embedded in the press-fit groove 33 formed in the terminal carrier 32 of the base 30, and a contact leg 24 extending away from the anchoring leg 22 so as to be separated therefrom. The coupling leg 26 extending from the rear end of the anchoring foot 22 to the rear end of the contact leg 24 and the terminal leg 28 extending from the rear end of the anchoring foot 22 and protruding from the base 30 are formed. The coupling leg 26 is formed in such a manner as to impart a spring for elastically deforming the contact leg 24 with respect to the anchor leg 22 so as to be freely deformable. By inserting the anchor leg 22 into the press-fitting groove 33 of the terminal carrier 32, and inserting the contact leg 24 into each of the holding grooves 35 as shown in Fig. 2, the socket contact 20 is added to The base 30 is attached to the bottom surface of the second carrier 34. Further, between the upper end of the contact leg 24 and the upper bottom surface of the holding groove 35, the contact leg 24 is flexed upward in the holding groove 35 due to the gap therebetween.

In the base portion 30 of the socket 1 of the present embodiment, the length in the front-rear direction is longer than the length in the front-rear direction of the base portion of the socket connector of the MicroUSB standard, and only the length of the second carrier 34 in which the additional socket contact 20 is exposed is increased in the front-rear direction. the amount.

According to the above configuration, the socket 1 of the present embodiment can overlap the mounting space of the additional socket contact 20 in the vertical direction in the mounting space of the first socket contact 10. For example, in the terminal carrier 32, the anchor leg 22 of the additional socket contact 20 and the rear end portion of the contact leg 24 can be attached by the mounting space of the main piece into which the first socket contact 10 is to be inserted. Therefore, in the socket 1 of the present embodiment, the amount of height of the base portion 30 due to the attachment of the additional socket contact 20 is minimized. Therefore, the base portion 30 can be lowered in height, and the socket can be reduced. 1 low back. Further, when the maximum height of the base portion of the socket 1 of the present embodiment is based on the maximum height of the base portion 30 of the socket 1 of the present embodiment, only the fitting projection portion 238 of the second plug 200 is present (see FIG. 10). The amount of thickness.

According to the above configuration, in the socket 1 of the present embodiment, the mounting space of the additional socket contact 20 can be reduced to the width of the base portion of the socket of the MicroUSB standard in the left-right direction. In other words, the socket 1 of the present embodiment does not have the additional socket contact 20, and the left-right width of the base portion 30 is larger than the width of the base portion of the micro USB-sized socket. Therefore, the base portion 30 can be downsized. The left and right widths of the base portion 30 of the socket 1 of the present embodiment are equal to the left and right widths of the base portion of the socket of the MicroUSB standard, so that the size of the socket 1 can be reduced.

The socket housing 40 is formed into a rectangular tube shape by a metal plate (for example, made of stainless steel) having corrosion resistance, and is composed of an upper wall 42, a lower wall 44, and a pair of side walls 46 facing in the width direction. There is a front opening 48. Further, the upper wall 42 is provided with an engaged portion (engaged hole) 43 so that the engaging claws 162 and 262 can be detachably engaged therein (see FIG. 4). Then, the base portion 30 is inserted into the socket housing 1 through the rear opening of the socket housing 40, and the base portion 30 is fixed (stopped) on the socket housing 40 on the side of the terminal carrier 32.

As shown in Fig. 2, the shape of the front opening 48 of the socket housing 40 is configured to collectively receive (receive) the first plug and the second plug 200. In the present embodiment, the shape of the front opening 48 is similar to the cross-sectional shape of the front end of the second plug 200.

As shown in FIGS. 2 and 4, the lower wall 44 of the socket housing 40 has a central portion in the width direction, and covers the rear end of the second carrier 34 (the front end of the terminal carrier 32) from the front opening 48 to face upward. The wall 42 is formed in a curved manner, and is formed with a projection 45 extending in the front-rear direction. Further, the height of the projection 45 substantially coincides with the thickness of the fitting projection 238 of the second plug 200 (see FIG. 10). The distance between the top surface of the projection 45 and the upper wall 42 of the socket housing 40 in the vertical direction (as the first height pitch HG1) is the height of the plug housing of the first plug based on the MicroUSB standard (the first plug) The maximum height is roughly equal. Further, the distance between the lower wall 44 and the upper wall 42 other than the projections 45 of the socket housing 40 (as the second height pitch HG2) is the maximum height of the plug housing 240 (see FIG. 8) of the second plug 200. The second plug 200 is formed in a substantially equal manner. That is, the maximum height of the socket housing 40 in the present embodiment is such that the height of the protrusion 45 is larger than the maximum height of the socket housing of the MicroUSB standard.

As shown in FIGS. 1 to 4, in a state in which the base portion 30 is inserted into the socket housing 40, the first carrier 36 and the first socket contact 10 are disposed in the first height pitch HG1. At this time, the first socket contact 10 is located at a certain height closer to the upper wall 42 than the lower wall 44 of the socket housing 40 (the first height H1 measured from the lowermost portion of the lower wall 44 of the socket housing 40). The center of the socket housing 40 in the width direction is disposed so as to face the projections 45.

Moreover, as shown in FIG. 2, the second carrier 34 and the additional socket contact 20 are disposed in the second height pitch HG2. At this time, the second socket contact 20 is located near the lower wall 44 of the socket housing 40 and has a height smaller than the first height H1 (the second height H2 measured from the lowermost portion of the lower wall 44 of the socket housing 40).

Further, as described above, the left and right widths of the base portion 30 are equal to the left and right widths of the base portion of the MicroUSB-sized socket. Therefore, the width dimension of the socket housing 40 in the present embodiment also forms the width dimension of the housing of the socket of the MicroUSB standard. equal. Further, in the socket housing 40 of the present embodiment, the size of the upper and lower sides and the front-rear direction is suppressed to a minimum when compared with the socket housing of the MicroUSB standard. Therefore, the size of the socket 1 can be reduced.

Therefore, the socket 1 of the present embodiment reliably contacts the inner side surface of the socket housing 40 and the outer surface of the plug housing when the first plug is inserted and when the second plug 200 is inserted. Therefore, in the socket 1 of the present embodiment, the holding force at the time of plug connection can be improved for any of the first plug and the second plug 200, and the plug can be reliably connected to the socket 1.

Further, in the present embodiment, one projection 45 is provided at the central portion in the width direction of the lower wall 44 of the socket housing 40, but as shown in Fig. 11, it may be at the left and right ends of the lower wall 44 of the socket housing 40. In each of the projections 45 and 45, the additional socket contact 20 is disposed at the center portion in the width direction of the lower wall 44 of the socket housing 40 sandwiched by the projections 45. Alternatively, as shown in FIG. 12, a plurality of (two in the illustrated example) projections 45 may be provided in the socket housing 40, and additional socket contacts 20 may be disposed on the outer side in the width direction of each of the projections 45. Moreover, the arrangement of the terminal piece 14 of the socket contact 20 with respect to the rear surface of the socket base 30 is not limited to the arrangement shown in FIG. 3, and may correspond to the wiring of the printed wiring board on which the socket 1 of the present embodiment is mounted. The pattern is configured to properly deviate from the left and right direction.

As shown in FIGS. 8 to 9 , the second plug 200 includes a plug base 230 made of an insulating synthetic resin molded article, a plug housing 240 that houses the plug base 230 therein, and is held in the plug. The plurality of outer casings (in the present embodiment, five) are the first plug contacts 210 and the plurality (in the present embodiment, five) add plug contacts 220. In other words, the configuration of the second plug 200 is different from the configuration of the first plug of the MicroUSB standard in that the plug contact 220 is added.

Further, in the same manner as the first plug of the MicroUSB standard, a pair of engaging members 260 are provided on both sides in the width direction of the plug base portion 230 of the second plug 200, and the engaging members 260 are provided with engaging claws 262 projecting from the distal end thereof. When the second plug 200 is inserted into the plug housing 40 of the socket 1, the engaging member 260 mechanically holds the second plug so as to be detachably engaged with the engaged portion (engaged hole) 43. The combination of the plug 200 and the socket 1.

In Fig. 10, the plug base 230 of the second plug 200 is shown. The plug base portion 230 is provided at both ends of the lower side of the first carrier 234 of the second plug 200 in the lower left and right (width direction), and the two rectangular plate-shaped fitting projections 238 are provided to protrude forward. Each of the fitting projections 238 is provided with a plurality of additional plug contacts 220 (in the present embodiment, a total of five left and right). Further, the first carrier 234 of the second plug 200 is formed such that the maximum height thereof is larger than the maximum height of the first plug of the MicroUSB standard by the thickness of the fitting protrusion 238, but the width (left and right) size is formed and the first The width (left and right) of the plug is equal in size. In the above-described manner, the second plug 200 can secure the space for attaching the engaging member 260 so that the additional plug contact 220 is provided in the fitting projection 238, and is suitable for the socket 1 of the present embodiment which has been downsized. The configuration of the plug base 230 of the other second plug 200 is substantially the same as the configuration of the plug base 130 of the first plug. That is, the plug base 230 of the second plug 200 is integrally formed with the terminal carrier 232 and the first carrier 234 as shown in FIG. The terminal carrier 232 is provided with a fitting recess 236 for fitting the first carrier 36 of the base portion 30 of the receptacle connector 1. Further, in the bottom surface of the fitting recess 236 and the rear half of the top surface of the terminal carrier 232, a plurality of (5) grooves 235 extending in the front-rear direction are arranged in parallel at equal intervals in the left-right direction, and One of the five first plug contacts 210 is inserted. The terminal piece 250 integrally formed with the first plug contact 210 and connected to the core wire (not shown) of the cable protrudes rearward from the rear end surface of the terminal carrier 232. Further, as shown in Fig. 8, the second plug 200 is provided at the tip end of the cable 280, and the connection portion between the cable 280 and the second plug 200 is molded by a rectangular parallelepiped synthetic resin molded body 270.

The plug housing 240 of the second plug 200 is formed into a rectangular tube shape by a metal (for example, stainless steel) plate material having corrosion resistance, and covers the plug base portion 230. Here, as shown in Fig. 6, the front end portion (fitting portion) of the plug housing 240 that is fitted to the socket housing 40 is provided with the left and right side surfaces and the bottom surface of the fitting projection 238 along the lower portion thereof. Further, the bottom surface of the plug housing 240 is formed to have a length in the front-rear direction, and a recess extending in the front-rear direction is formed in the center portion of the outer bottom surface. The depth of the recess provided in the central portion of the outer bottom surface of the plug housing 240 substantially coincides with the thickness of the fitting projection 238.

The height of the plug housing 240 of the second plug 200 is such that the portion where the recess is provided is equal to the maximum height of the plug housing of the first plug of the MicroUSB standard, and the portion where the recess is not provided is the first portion. The maximum height of the plug housing of the plug is only the size of the thickness of the fitting protrusion 238 (the maximum height dimension of the plug housing of the second plug 200). Further, in a case where the second plug 200 is inserted into the plug housing 40 of the socket 1, the outer bottom surface of the plug housing 240 is closely attached to the inner side of the lower wall 44 of the socket housing 40 of the socket 1, and the lower end of the front end of the plug housing 240 is abutted. The terminal carrier 32 is connected to the socket 1 (refer to Fig. 5). Further, as described above, the width dimension of the terminal carrier 232 of the second plug 200 is equal to the width dimension of the terminal carrier 132 of the first plug. Therefore, the width dimension of the plug housing 240 of the second plug 200 is also formed. The plug housing of the plug has the same width and dimension.

Further, in the present embodiment, only the additional plug contact 220 provided in the second plug 200 is designed to be a non-flexible structure (so-called tuning fork contact), and an additional socket contact that elastically contacts the additional plug contact 220 is provided. 20 is designed to be flexible (so-called corrugated contact), but the configuration of the contacts can be reversed. That is, the additional plug contact 220 may be designed to be flexible and the additional socket contact 20 may be designed to be inflexible.

When the first plug is connected to the socket housing 40 of the socket 1 of the present embodiment, the plug housing of the first plug is housed only above the protrusion 45 of the socket housing 40 and the second carrier 34 of the base portion 30. In the space ahead (S1 in Figure 1). At this time, the plug housing of the first plug has a front end portion that covers substantially the entire left and right and abuts against the front surface of the second carrier 34, and the outer wall thereof elastically contacts the inner wall of the socket housing 40. Therefore, the first plug and the socket 1 are The connection between the two becomes true. Further, the first plug of the first plug is bent downward, and is elastically contacted with the first socket contact 10 exposed on the bottom surface of the first carrier 36, so that the two contacts are in contact with each other. Further, by the engagement of the engaging member 160 and the engaged portion 43, the combination of the first plug and the socket 1 is mechanically held. Then, the protrusion 45 provided in the socket housing 40 supports the first plug so as to be in close contact with the lower wall of the plug housing of the first plug. Therefore, the contact pressure of the first plug contact of the first plug can be increased and the connection can be made. The workability at the time of the first plug does not decrease.

On the other hand, when the second plug 200 is connected to the socket 1 of the present embodiment, the plug housing 240 of the second plug 200 is housed below the protrusion 45 of the socket housing 40 and is second than the base portion 30. The space behind the carrier 34 (S2 in Fig. 1). At this time, the lower end of the distal end of the plug housing 240 of the second plug 200 covers the entire left and right and abuts against the front surface of the terminal carrier 32. Further, the first plug contact 210 of the second plug 200 is deflected downward, and is elastically contacted with the first socket contact 10 exposed on the bottom surface of the first carrier 36, so that the first plug contact 210 and The first socket contacts 10 are in contact with each other. At the same time, the pair of fitting projections 238 of the second plug 200 are exposed in the space on both sides in the width direction of each of the projections 45 and below the bottom surface of the second carrier 34, and are exposed to the second carrier. The contact leg 24 of the additional socket contact 20 on the bottom surface of the 34 is deflected upward, and is elastically contacted with the additional plug contact 220 exposed on the top surface of the fitting protrusion 238, so that the plug contact 220 and the additional plug are added. The socket contacts 20 are in contact with each other. Further, the second plug 200 is supported so that the lower wall 44 other than the projection 45 is in close contact with the lower portion of the plug housing 240 of the second plug 200.

As described above, the socket connector 1 of the present embodiment has either one of the number of contacts and one type of plug connector (the first plug and the second plug) having different outer casing (plug housing) shapes (mainly dimensions). Both can be plugged in and out freely. Further, when the socket connector 1 of the present embodiment is connected to the first plug which is smaller than the second plug 200, since the plug 45 provided in the socket housing 40 holds the plug housing of the first plug, the first connector is not connected. The workability at the time of the plug is lowered. Further, since the additional socket contact 20 that is in contact with the additional plug contact 220 of the second plug 200 is bent upward, the additional plug contact 220 of the second plug 200 does not have to be flexed. Therefore, since the space for the deflection of the plug contact 220 is not required to be added to the second plug 200, the size of the front end portion of the outer casing 240 of the second plug 200 can be relatively small in the vertical direction. As a result, the socket can be connected. The low profile of the device 1.

Further, in the present embodiment, the socket base portion 30 supports the additional socket contact 20 that is in contact with the additional plug contact 220 of the second plug 200, respectively, at both sides of the projection 45 in the width direction of the socket housing 40. Therefore, the space inside the socket housing 40 can be effectively utilized, and the size can be reduced. Further, since the projection 45 is provided in the vertical direction of the outer casing 40 and is disposed at a position facing the first socket contact 10 which is in contact with the plug contact of the first plug, the first plug of the first plug can be improved. The contact pressure between the point 10 and the first socket contact 110. Further, since the projection 45 continuously extends from the front opening 38 of the outer casing 40 to the rear end of the second carrier 34, the holding force of the first plug to the plug housing can be improved.

The connector to which the technical idea of the present invention is applicable is not limited to a connector based on a specific specification, and all of the connectors based on any standard (for example, USB standard or IEEE1394 standard) can be applied.

1. . . socket

1, 301. . . Socket connector

10. . . 1st socket contact

12. . . Contact sheet

14,250. . . Terminal piece

20. . . Additional socket contact

twenty two. . . Anchor foot

twenty four. . . Contact foot

26. . . Combined foot

28. . . Terminal pin

30. . . Socket base

32, 132, 232. . . Terminal carrier

33. . . Pressing into the ditch

34. . . Second vehicle

35. . . Keep the groove

36, 134, 234. . . First vehicle

38, 48. . . Front opening

40, 340. . . Socket housing

42. . . Upper wall

43. . . Engaged part (engaged hole)

44. . . Lower wall

45. . . Protrusion

46. . . Side wall

110, 210. . . 1st plug contact

130, 230. . . Plug base

135, 235. . . Trench

136. . . Chiseling recess

150. . . Terminal piece

160, 260. . . Engaging member

162, 262. . . Clamping claw

200. . . Second plug

220. . . Additional plug contacts

238, 334. . . Chimeric protrusion

240. . . Plug housing

270. . . Synthetic resin molded body

280. . . cable

310. . . Socket contact

330. . . Socket body

HG1. . . 1st height spacing

HG2. . . 2nd height spacing

S1, S2. . . space

Fig. 1 is a cross-sectional view showing an embodiment of a socket according to the present invention.

Fig. 2 is a front view showing the embodiment of the above.

Figure 3 is a rear view showing the embodiment of the above.

Fig. 4 is a perspective view, partly broken away, of the embodiment of the same.

Fig. 5 is a perspective view of the base in the embodiment of the above.

Fig. 6 is a perspective view of an additional socket contact in the embodiment of the above.

Fig. 7 is a perspective view of the base of the first plug.

Figure 8 is a perspective view of the second plug.

Figure 9 is a front view of the second plug.

Fig. 10 is a perspective view of the base of the second plug.

Fig. 11 is a schematic front view showing another embodiment of the socket according to the present invention.

Fig. 12 is a schematic front view showing another embodiment of the socket according to the present invention.

Figure 13 is a front view showing a socket connector of a conventional example.

1. . . socket

12. . . Contact sheet

twenty four. . . Contact foot

34. . . Second vehicle

36. . . First vehicle

40. . . Socket housing

42. . . Upper wall

43. . . Engaged part (engaged hole)

44. . . Lower wall

45. . . Protrusion

46. . . Side wall

48. . . Front opening

Claims (8)

A socket for selectively connecting a first plug and a second plug having different contacts, wherein the socket is characterized in that the contact of the first plug is configured to have only one set of first plug contacts. The contact structure of the second plug includes a set of additional plug contacts in addition to the set of first plug contacts, and the socket is formed of a conductive material and is composed of an upper wall, a lower wall, and a casing formed by a pair of side walls facing in the width direction; and an insulating base disposed in the casing, wherein a front opening is formed at a front end of the casing, and the first plug and the first plug are commonly used The size of the plug, wherein the base portion is composed of a first carrier and a second carrier, and the first carrier is provided with a first socket contact that is electrically connected to the first plug contact and is two-dimensionally arranged. The second carrier is provided with a two-dimensionally arranged additional socket contact electrically connected to the set of additional plug contacts, wherein the first carrier is along the longitudinal direction of the outer casing from the second load Extending outward toward the front opening side and configured to Adjacent to the upper wall of the outer casing, the first socket contact is located at a first height closer to the upper wall than the lower wall, and the first height position is measured from a lowermost portion of the lower wall, and the second The carrier is disposed behind the first carrier in a direction deviating from the front opening in the longitudinal direction of the outer casing, and the additional socket contact is located further rearward than the first socket contact The arrangement of the additional socket contacts is located further than the first socket contact Near the second height of the lower wall, the second height is measured from the lowermost portion of the lower wall, and is smaller than the first height, and a portion facing the upper wall and remaining from the lower wall is formed in a part of the lower wall a partially protruding protrusion having a first height pitch between the protrusion and the upper wall, and a second height pitch between the lower wall other than the protrusion and the upper wall, and disposed in the first height interval The first carrier and the first socket contact are disposed, and the second carrier and the additional socket contact are disposed in a second height interval. The socket according to claim 1, wherein a stopper is formed at a front end of the second carrier, and the width of the first carrier is larger than a width of the first carrier, and the first plug is abutted Front end. The socket according to claim 1, wherein the protrusion is formed at a center in a width direction of the lower wall, and the additional socket contact is divided into two on both sides in a width direction of the first socket contact. Group. The socket according to the first aspect of the invention, wherein the first socket contact is disposed at a center in a width direction of the outer casing and faces the protrusion. The socket of claim 1, wherein the protrusion continuously extends from the front opening to a rear end of the second carrier. The socket of claim 1, wherein the additional socket contact is urged by a spring. The socket of claim 6, wherein the additional socket contact is formed by an anchor foot embedded in a groove formed in the second carrier and separated along the anchor foot a joint leg extending from the rear end of the anchor leg to the rear end of the contact leg, and a terminal leg extending from the rear end of the anchor leg and protruding from the base portion, the combination The foot is formed in such a manner as to urge a spring for elastically deforming the contact leg with respect to the anchor foot. The socket of claim 1, wherein the first socket contacts are arranged based on a specification of a micro USB connector.