JP2017147171A - connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector in which a width is further reduced.SOLUTION: A connector 1 comprises: a resin housing 10 having an almost rectangular fitting surface 11; and a plurality of contacts 20 supported by the resin housing 10. The resin housing 10 includes a support projection 12 that is projected from the fitting surface 11, is extended to a longitudinal direction in a center of a width direction of the fitting surface 11, and supports the plurality of contacts 20. The plurality of contacts 20 includes: a contact part 21 that contacts to each contact of a mating connector, having a form curved in a convex shape toward the mating connector; and a soldering part 22 that is extended to the width direction of the resin housing 10, and is soldered to a circuit substrate. The plurality of contacts 20 is arranged in one line with a posture that the contact part 21 bridges the support projection 12.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a connector suitable for connection between circuit boards.

  In recent years, depending on the use of a connector, it has been required to further reduce the size and width of the connector. For example, a board-to-board connector used to connect circuit boards built in a portable device will be taken up. In the case of a connector for this application, it is a connector in which several tens of contacts are arranged, and for example, extremely small dimensions of 10 mm or less in length and 1.5 mm or less in width have been required.

  Here, Patent Document 1 discloses a connector including a housing having a standing wall rising from a fitting surface and a shell along a side surface of the standing wall.

  Patent Document 2 discloses a connector assembly including a board-mounted receptacle connector having one row of contacts and a plug connector having one row of contacts and terminating a cable.

Japanese Patent Laying-Open No. 2015-135806 JP 2010-113813 A

  In the case of the connector of the above-mentioned Patent Document 1, it is difficult to further reduce the width of the connector because the structure of the housing is an obstacle.

  Further, in the case of the above-mentioned connector of Patent Document 2, the contact of the receptacle connector and the contact of the plug connector are supported by the respective connector housings so as to be laterally displaced from each other. For this reason, in the case of the connector disclosed in Patent Document 2, it is difficult to further reduce the width.

  An object of this invention is to provide the connector which implement | achieved further narrowing in view of the said situation.

The connector of the present invention that achieves the above object provides:
A resin housing having a substantially rectangular mating surface;
A plurality of contacts supported by the resin housing,
The resin housing has a support protrusion that protrudes from the fitting surface and extends in the longitudinal direction at the center in the width direction of the fitting surface to support a plurality of contacts.
Each of the plurality of contacts has a contact portion that contacts the contact of the mating connector, and has a soldering portion that extends in the width direction of the resin housing and is soldered to the circuit board. The plurality of contacts are arranged in a row in a posture in which the contact portions straddle the support ridges.

  In the case of the connector of the present invention, a plurality of contacts are arranged in a line. In addition, the contact portions of these contacts have a convexly curved shape and are supported in a posture straddling the support protrusion. For this reason, the contact of the mating connector which contacts these contact parts can contact the contact of the connector of this invention so that the contact part of the shape curved convexly may be pinched | interposed from the width direction. Therefore, according to the connector of the present invention, further narrowing can be realized as compared with the connectors disclosed in the above-mentioned Patent Documents 1 and 2.

  Here, in the connector according to the present invention, it is preferable that the soldering portions of the plurality of contacts alternately extend in the left and right in the width direction of the resin housing in the order of arrangement of the plurality of contacts.

  If the soldering portions of the plurality of contacts have a shape alternately extending in the width direction right and left in the arrangement order, the soldering pitch of the contacts on the circuit board becomes an interval twice the arrangement pitch of the contacts in the connector. For this reason, it is possible to increase the number of pins or reduce the longitudinal dimension by narrowing the pitch.

  Further, in the connector of the present invention, the resin housing is such that the contact portions of the plurality of contacts supported by the support protrusions are visually recognized from both sides with respect to the region extending over all of the plurality of contacts. It is preferable that the region has a shape in which both sides of the support protrusion are open.

  If the contact and the resin housing are to be integrally molded, the molding die must have a structure for holding the contact in place. When the resin housing has a shape in which both sides of the support protrusion are open in the above-mentioned region, it can be supported so as to sandwich the contact portion of the contact from both sides in integral molding. The dimensional accuracy can be improved.

  Furthermore, in the connector of the present invention, it is preferable that the connector further includes a metal shell that guides the mating connector having a shape in which the fitting surface of the resin housing is surrounded in a substantially rectangular shape over the entire circumference.

  The resin housing may have a structure that cannot have a structure for guiding the mating connector to be fitted due to the narrowing. Even in such a case, when the metal shell is provided, the mating connector can be guided by the metal shell. Further, the resin housing may not be able to maintain the necessary strength by itself due to the narrowing of the width. Even in such a case, by providing this metal shell, a connector having the necessary strength can be realized.

  Furthermore, the connector of the present invention is preferably a connector that electrically connects a circuit board on which the connector is mounted and a circuit board on which the mating connector is mounted.

  The connector of the present invention is suitable as a so-called board-to-board connector for electrically connecting a circuit board and a circuit board.

  According to the present invention as described above, it is possible to provide a connector that realizes further narrowing.

It is an appearance perspective view of a connector as one embodiment of the present invention. It is a disassembled perspective view of the connector shown in FIG. It is an external appearance perspective view of the other party connector. It is the perspective view of the state before a fitting which showed the connector shown in FIG. 1, FIG. 2 and the other party connector shown in FIG. 3 according to the attitude | position of fitting. FIG. 5 is a cross-sectional view of two connectors along arrows AA and BB shown in FIG. 4. FIG. 4 is a perspective view of the connector shown in FIGS. 1 and 2 and the mating connector shown in FIG. 3 in a fitted state. FIG. 7 is a cross-sectional view of two connectors along arrows AA and BB shown in FIG. 6.

  Embodiments of the present invention will be described below.

  FIG. 1 is an external perspective view of a connector as one embodiment of the present invention.

  Here, FIG. 1A is a perspective view of a posture in which a fitting surface to be fitted with a mating connector (described later) is directed upward. FIG. 1B is a perspective view of a posture in which a lower surface mounted on a circuit board (not shown) faces upward.

  FIG. 2 is an exploded perspective view of the connector shown in FIG.

  The connector 1 includes a resin housing 10. This resin housing 10 has a fitting surface 11 with a mating connector formed in a substantially rectangular shape on the upper surface shown in FIGS.

  Further, the resin housing 10 is formed with a support protrusion 12 that protrudes upward from the fitting surface 11 (on the mating connector side during fitting) and extends in the longitudinal direction at the center in the width direction of the fitting surface 11. A plurality of contacts 20 are supported on the support protrusion 12. These contacts 20 are integrally formed with the resin housing 10.

  Here, each of these contacts 20 has a contact portion 21 that contacts the contact of the mating connector and a soldering portion 22 that is soldered to the circuit board. And the contact part 21 has the shape curved convexly toward the other party connector, ie, the upper direction in the attitude | position shown to FIG. 1 (A). Moreover, the soldering part 22 is extended in the width direction of the resin housing 10, as shown in FIG.1 (B). These contacts 20 are arranged in a row in a posture in which the contact portions 21 of the contacts 20 straddle the support protrusions 12 of the resin housing 10.

  Further, as shown in FIG. 1B, the soldering portions 22 of these contacts 20 are alternately arranged on the left and right in the width direction of the resin housing 10 in the order of arrangement of the contacts 20 along the lower surface 19 of the resin housing 10. It extends to. These soldering portions 22 are soldered to a circuit board (not shown) on which the connector 1 is mounted. Here, since these soldering portions 22 alternately extend to the left and right in the width direction of the resin housing 10, the soldering pitch of the contacts 20 on the circuit board is twice the arrangement pitch of the contacts 20 in the connector 1. It becomes the interval of. This makes it possible to increase the number of pins or reduce the longitudinal dimension by narrowing the pitch.

  As shown in FIG. 2, in the resin housing 10, the contact portions 21 of the plurality of contacts 20 supported by the support protrusions 12 of the resin housing 10 extend over all of the plurality of contacts 20 arranged there. The region has a shape that is visible from both sides of the resin housing 10. Specifically, in the case of the resin housing 10 of the present embodiment, both sides of the entire longitudinal direction of the support ridge 12 are visible so that the support ridge 12 is visually recognized from both sides. It has an open shape. In other words, the fitting surface 11 of the resin housing 10 is flat up to both side ends except for the support ridge 12 in the entire longitudinal direction so that the entire longitudinal direction of the support ridge 12 is visible from both sides. It has a shape.

  When the contact 20 and the resin housing 10 are to be integrally molded, a structure for holding the contact in a fixed position is required for the molding die. In the present embodiment, the resin housing 10 has a shape in which both sides of the support protrusion 12 are opened with respect to the entire region. For this reason, in the integral molding, the dimensional accuracy of the contact portion 21 of the contact 20 is improved by using a mold having a structure in which the contact portion 21 of the contact 20 is supported by being sandwiched from both sides.

  The connector 1 includes a metal shell 30. The metal shell 30 in the present embodiment is formed through a bending process. The metal shell 30 in the present embodiment is composed of two parts 30a and 30b separated at the center in the longitudinal direction. These two parts 30a and 30b have the same shape. The two parts 30a and 30b are jointly arranged so as to surround the fitting surface 11 over one round. The metal shell 30 may be an integral product.

  The metal shell 30 includes a base portion 31, a curved portion 32, and a support portion 33. The base 31 has a shape that rises from the periphery of the fitting surface 11 of the resin housing 10, extends along the periphery, and surrounds the fitting surface 11 in a substantially rectangular shape over the entire circumference. Further, the bending portion 32 is connected to the upper end of the base portion 31 and is bent inwardly in a semicircular shape. The curved portion 32 plays a role of easily guiding the mating connector to be fitted to the correct fitting position by the semicircular shape.

  Further, the support portion 33 has a shape that hangs from the curved portion 32 along the inner wall surface of the base portion 31 toward the fitting surface 11 of the resin housing 10. The support portion 33 plays a role of supporting the mating connector that has been fitted. The support portion 33 is a metal plate having a thickness twice that of the base portion 31 and reinforces this portion. As a result, the mating connector is more firmly supported.

  Further, the curved portion 32 and the support portion 33 of the metal shell 30 are formed in a region excluding the substantially rectangular four corners of the base portion 31. The four corner regions of the metal shell 30 are formed only by the base portion 31 excluding the bending portion 32 and the support portion 33. For this reason, the width | variety which receives a mating connector is wider than the center part in the longitudinal direction both ends which consist only of the base 31. FIG.

  Further, the support portions 33a at both ends in the longitudinal direction of the metal shell 30 are formed with recessed portions 34 (see also FIGS. 5 and 7) that are recessed outward. The recess 34 has a role of locking the mating connector in a fitted state.

  Furthermore, the soldering part 35 extended further downward from the lower end of the base 31 is formed in the longitudinal direction both ends of this metal shell 30, and the both sides of the both ends vicinity. These soldering portions 35 are soldered together with the soldering portions 22 of the contacts 20 to a circuit board (not shown) on which the connector 1 is mounted. And these soldering parts 35 firmly fix the connector 1 to a circuit board by soldering.

  Here, both side portions along the width direction of the mating connector that has been fitted are supported by the support portions 33b extending in the longitudinal direction of the support portions 33 of the metal shell 30, that is, the support portions 33b on both sides along the width direction. Supported to be sandwiched from both sides.

  Here, the resin housing 10 of the present embodiment has a shape in which both sides of the support protrusion 12 are opened due to manufacturing requirements. That is, the resin housing 10 of the present embodiment is not formed with standing walls along the side surfaces of the support portions 33b that support both side surfaces of the mating connector of the metal shell 30. That is, the support portion 33 b of this portion of the metal shell 30 has a structure that supports both side surfaces along the width direction of the mating connector independently without the support of the resin housing 10.

  The connector 1 of the present embodiment has a shape in which both sides of the support ridge 12 are open, thereby enabling the formation of the support ridge 12 in which the contact portions 21 of the contacts 20 are arranged, and realizing a narrow width. Yes. However, the connector 1 of this embodiment cannot support the mating connector by the resin housing 10 itself because of the shape of the resin housing 10. Therefore, the connector 1 of the present embodiment has a structure in which the mating connector is supported by the metal shell 30 from both sides along the width direction. Further, due to this structure, the metal shell 30 also serves to reinforce the resin housing 10. Furthermore, the connector 1 of the present embodiment has a structure that guides the mating connector to the correct fitting position by providing the curved portion 32 in the metal shell 30, while further reducing the width, It has a structure that facilitates mating of the mating connector.

  The resin housing 10 is formed with an L-shaped pedestal 13 that rises by partitioning each of the four corners of the fitting surface having a substantially rectangular shape. The metal shell 30 is fixed to the resin housing 10 in such a posture that the four corners of the base portion 31 are placed on the base portions 13. The resin housing 10 is provided with holding grooves 14 for holding the metal shell 30 at positions adjacent to the four corner L-shaped base portions 13 on both sides. A total of four soldering portions 35a formed on both side portions in the vicinity of both end portions in the longitudinal direction of the above-described soldering portions 35 are press-fitted into the corresponding holding grooves 14 respectively. It is. Thereby, the two parts 30 a and 30 b constituting the metal shell 30 are held by the resin housing 10. The soldering portion 35 of the metal shell 30 is soldered to a circuit board (not shown). For this reason, the holding of the metal shell 30 (two parts 30a and 30b) by the resin housing 10 is sufficient only by the holding by the four holding grooves 14.

  FIG. 3 is an external perspective view of the mating connector. The mating connector 2 is a connector that fits with the connector of the present embodiment shown in FIGS. In FIG. 3, the mating connector 2 is shown in a posture in which the fitting portion that fits the connector 1 shown in FIGS. 1 and 2 faces upward.

  The mating connector 2 includes a resin housing 40, a plurality of contacts 50, and reinforcing metal fittings 60 at both ends in the longitudinal direction. A fitting groove 41 extending in the longitudinal direction is formed in the resin housing 40. When the mating connector 2 is fitted to the connector 1 shown in FIGS. 1 and 2, the support protrusion 12 provided on the resin housing 10 of the connector 1 is provided on the resin housing 40 of the mating connector 2. Fit into the fitting groove 41.

  A plurality of contacts 50 are press-fitted and arranged in the fitting groove 41. When the support protrusion 12 of the connector 1 of FIGS. 1 and 2 is fitted into the fitting groove 41, the plurality of contacts 20 of the connector 1 of FIGS. 1 and 2 and the plurality of contacts 50 of the mating connector 2 are mutually connected. The corresponding contacts 20 and 50 are contacted and electrically connected.

  Here, the contact 20 provided in the connector 1 of the present embodiment has a shape in which the contact portion 21 that contacts the contact 50 of the mating connector 2 is convexly curved toward the mating connector 2 as described above. And the contact part 21 is arrange | positioned in the attitude | position which straddled the support protrusion 12 of the resin housing 10. FIG. On the other hand, the contact 50 of the mating connector 2 comes into contact with the contact portion 21 so as to sandwich the contact portion 21 having a convexly curved shape from both sides in the width direction of the support protrusion 12 (FIGS. 5B and 7B). )

  Similar to the connector 1 of the present embodiment, the mating connector 2 is mounted on the circuit board in a posture in which the lower surface in the posture shown in FIG. 3 is in contact with a circuit board (not shown). The circuit board on which the mating connector 2 is mounted is a circuit board different from the circuit board on which the connector 1 shown in FIGS. 1 and 2 is mounted. Each contact 50 is provided with solder connection portions 51 (see FIGS. 4 and 6) that alternately extend to the left and right in the width direction of the resin housing 40 along the lower surface 42 of the resin housing 40. When the mating connector 2 is mounted on a circuit board (not shown), the solder connection portion 51 of the contact 50 is soldered to the surface of the circuit board.

  Further, the reinforcing metal fittings 60 are fixed to both ends of the housing 40 in the longitudinal direction. The reinforcing metal fitting 60 is provided with a protruding portion 61 that protrudes outwardly from the longitudinally outward surface. When the mating connector 2 is fitted to the connector 1 shown in FIGS. 1 and 2, the protrusion 61 enters the recess 34 provided in the metal shell 30 of the connector 1. Then, when the protrusion 61 enters the recess 34, the connector 1 and the mating connector 2 are locked so as not to be easily detached.

  The reinforcing metal fitting 60 is provided with a soldering portion 62 extending horizontally. The soldering part 62 is soldered together with the soldering part 51 of the contact 50 to a circuit board (not shown) on which the mating connector 2 is mounted. And the soldering part 62 of the reinforcing metal fitting 60 firmly fixes the mating connector 2 to the circuit board by soldering.

  Here, the width dimension of the mating connector 2 at both ends in the longitudinal direction where the reinforcing metal fittings 60 are attached is wider than the width dimension of the central portion in the longitudinal direction. The both end portions are fitted into wide portions where the metal shell 30 is formed only by the base portion 31 at both end portions of the connector 1 shown in FIGS. Since both ends in the longitudinal direction of the mating connector 2 are wide, they cannot be fitted into the portions of the metal shell 30 of the connector 1 where the support portions 33b extending in the longitudinal direction are formed. Assume that both end portions in the longitudinal direction of the mating connector 2 have the same width dimension as the central portion in the longitudinal direction. That is, it is assumed that the longitudinal end portion of the mating connector has a width dimension that fits into the center portion that is disengaged from both end portions of the connector 1. Then, while the mating connector 2 is displaced in the longitudinal direction with respect to the connector 1, the mating connector 2 is inclined, and one end of the mating connector 2 may be erroneously fitted to the connector 1. If this erroneous fitting occurs, the support protrusion 12 and the contact 20 of the connector 1 may be deformed, causing a failure. In the case of this embodiment, since the four corners of the metal shell 30 are formed only by the base 31, both ends of the connector 1 are wide, and both ends of the mating connector are fitted only in the wide portion. be able to. That is, in the case of the present embodiment, the fitting is prevented while being displaced in the longitudinal direction.

  4 is a perspective view of the connector shown in FIG. 1 and FIG. 2 and the mating connector shown in FIG.

  Here, since it matches with the fitting posture, the lower surface of the mating connector 2 is shown upward.

  FIG. 5 is a cross-sectional view of two connectors along arrows AA and BB shown in FIG.

  Here, FIG. 5A is a longitudinal sectional view of two connectors along the arrow AA in FIG. FIG. 5B is a cross-sectional view in the width direction of the two connectors along the arrow BB in FIG. The cross-sectional view in the width direction of FIG. 5B is shown in an enlarged manner as compared with FIGS. 4 and 5A for easy viewing.

  6 is a perspective view of the connector shown in FIGS. 1 and 2 and the mating connector shown in FIG. 3 in a fitted state.

  Further, FIG. 7 is a cross-sectional view of two connectors along arrows AA and BB shown in FIG.

  Here, FIGS. 7A and 7B are views similar to FIGS. 5A and 5B, respectively, except for the difference before and after the fitting. The cross-sectional view of FIG. 7B is also enlarged for the sake of easy viewing, like FIG. 5B.

  5 (A) and 7 (A), the protrusion 34 provided in the recess 34 provided with the metal shell 30 of the connector 1 and the reinforcing metal fitting 60 of the mating connector 2 enter the recess 34. Part 61 appears.

  When the mating connector 2 is fitted to the connector 1, in the longitudinal direction, the reinforcing metal fitting 60 of the mating connector 2 is in contact with and guided by the curved portions 32 at both ends in the longitudinal direction of the metal shell 30 of the connector 1. When the connector 1 and the mating connector 2 are fitted to each other, the protrusion 61 enters the recess 34 and the fitting does not easily come off.

  When the mating connector 2 is fitted to the connector 1, the width direction of the mating connector 2, as shown in FIG. 5B and FIG. The housing 40 of the connector 2 contacts and is guided and fitted. By this fitting, the contact 20 of the connector 1 enters the fitting groove 41 of the mating connector 2 together with the support protrusion 12 (see FIGS. 1 and 2). Then, the contact 20 of the connector 1 comes into contact with the contact 50 of the mating connector 2 so as to be sandwiched between the contacts 50 of the mating connector 2 from both sides. FIG. 7B shows that the contact 50 of the mating connector 2 bites into the contact 20, but this is because the shape before elastic deformation is shown. Actually, the contacts 50 of the mating connector 2 are elastically expanded by the insertion of the contacts 20, and the contacts 20 and 50 come into contact with each other with an intended contact pressure.

  In the present embodiment, the connector 1 in which ten contacts 20 are arranged in the longitudinal direction is shown. However, the number of contacts arranged is not limited to ten, and the number is arbitrary. The length dimension of the connector is adjusted by the number of contacts arranged.

  On the other hand, the width of the connector is kept narrow regardless of the number of contacts arranged in the longitudinal direction.

DESCRIPTION OF SYMBOLS 1 Connector 2 Mating connector 10 Resin housing 11 Fitting surface 12 Support protrusion 13 Base part 14 Holding groove 20 Contact 21 Contact part 22 Solder part 30 Metal shell 30a, 30b Component 31 Base part 32 Curved part 33 Support part 34 Depression part 35 Soldering portion 40 Resin housing 41 Fitting groove 50 Contact 51 Solder connection portion 60 Reinforcing bracket 61 Protruding portion 62 Soldering portion

Claims (5)

A resin housing having a substantially rectangular mating surface;
A plurality of contacts supported by the resin housing,
The resin housing has a support protrusion that protrudes from the fitting surface and extends in the longitudinal direction at the center in the width direction of the fitting surface to support the plurality of contacts.
Each of the plurality of contacts is convexly curved toward the mating connector, a contact portion that contacts the contact of the mating connector, and a soldering portion that extends in the width direction of the resin housing and is soldered to the circuit board And the plurality of contacts are arranged in a row in a posture in which the contact portions straddle the support ridges.   2. The connector according to claim 1, wherein the soldering portions of the plurality of contacts alternately extend to the left and right in the width direction of the resin housing in the order of arrangement of the plurality of contacts.   The resin housing has the support ridge for the region so that the contact portion of the plurality of contacts supported by the support ridge is visible from both sides of the region covering all of the plurality of contacts. The connector according to claim 1, wherein both sides of the connector are open.   4. The metal shell further comprising a metal shell for guiding a mating connector having a shape in which the fitting surface of the resin housing is surrounded in a substantially rectangular shape over a circumference. The connector according to any one of the above.   5. The connector according to claim 1, wherein the connector is a connector that electrically connects a circuit board on which the connector is mounted and a circuit board on which the mating connector is mounted. 6. Connector.

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