KR20120123196A - Electric connector for circuit board - Google Patents

Abstract

PURPOSE: An electric connector for circuit board is provided to minimize a connector in an opposing direction of a sidewall of a housing without shortening a connection unit. CONSTITUTION: A lower part of an external leg part(21B) is located inside. A part of a connection unit is located within the external leg part. A part of the external leg part is overlapped with an internal leg part in an opposite direction of a sidewall. The external leg part is inclined to be closed to the internal leg unit. The internal leg unit is located with a terminal of a mating connector.

Description

ELECTRIC CONNECTOR FOR CIRCUIT BOARD

The present invention relates to an electrical connector for a circuit board.

The connector of patent document 1 is known as an electrical connector for a circuit board arrange | positioned on a circuit board, and the several terminal is hold | maintained by two side walls which form a pair of housings. The connector of this patent document 1 has the substantially rectangular parallelepiped housing which can accommodate a mating connector from upper direction in the accommodating space enclosed by the circumferential wall, and two side walls extended in the housing longitudinal direction facing each other among the circumferential walls of the said housing | casing. It has a plurality of terminals that are supported by the array.

In the connector of this patent document 1, the terminal has an inverted U-shaped portion, and the inverted U-shaped portion is press-fitted from below into the side wall of the housing or integrally molded with the side wall. The two corner portions of the inverted U-shaped portions are parallel to each other at predetermined intervals in opposite directions (connector width directions) of the two side walls and extend straight in the vertical direction. An outer corner portion located outward in the opposite direction is bent at its lower end, and a connecting portion solderable to the corresponding circuit portion on the circuit board extends out of the housing toward the outer side in the opposite direction.

Japanese Laid-Open Patent Publication No. 2002-033145

In general, a connector for a circuit board is required to have a reduction in height, i.e., a small dimension in a direction perpendicular to the plane of the circuit board. From the request, it is desirable to miniaturize even in a direction parallel to the circuit board. In the connector of Patent Literature 1 described above, since the connecting portion of the terminal is positioned outside the housing by extending from the lower end of the outer corner portion to the outer side in the opposite direction of the side wall, the dimension in the opposite direction is increased by the extension. In this regard, there is room for improvement in miniaturization of the connector in the opposite direction. However, for example, when attempting to miniaturize the connector by simply shortening the connection part, the area of the solderable part in the connection part becomes small, and electrical conduction between the connector and the circuit board becomes unstable. At the same time, there is a fear that the fixing strength of the connector to the circuit board is lowered.

In view of such circumstances, an object of the present invention is to provide a circuit board connector capable of miniaturizing a connector in an opposite direction of the side wall of the housing without shortening the connecting portion.

The electrical connector for a circuit board which concerns on this invention is an electrical connector arrange | positioned on a circuit board and accommodates a mating connector from upper direction, and is fitted and connected with the said mating connector, and stands in the up-down direction and opposes each other, and is parallel to the surface of a circuit board. And a plurality of terminals arranged on at least one sidewall of the two side bottles, wherein the housing is disposed between the inner side surfaces of the two sidewalls that face each other. An accommodating space for accommodating a connector is formed, and the terminal is supported by the side wall, and an inner corner portion extending in an up and down direction at a position on the accommodating space side in the opposing direction of the side walls, and the inner side in the opposing direction. An outer corner portion extending in an up-down direction from a position outside the corner portion, and upper ends of the inner corner portion and the outer corner portion And it has a connecting portion for connecting the re-connection portion from the lower end of the outer leg which is solder connected to a corresponding circuit on the circuit board and extend toward the opposite direction outside.

In the electrical connector for a circuit board, in the present invention, the outer corner portion has a lower end of the outer corner portion positioned inward from the upper side in the opposite direction, and at least a portion of the connection portion overlaps the outer corner portion in the opposite direction. It is characterized by being located within the range.

In the present invention, the outer corner portion of the terminal has a lower end of the outer corner portion positioned inward in an opposite direction of two side walls than the upper end, and the connecting portion extends from the lower end of the outer corner portion toward the outer side in the opposite direction. At least a part of the connecting portion is located below the outer corner portion in a manner overlapping with the outer corner portion in the opposite direction. Therefore, as compared with the case where the outer corner portion extends straight in the vertical direction parallel to the inner corner portion as in the prior art, and the connection portion is directed out of the housing from the lower end of the outer corner portion, in the present invention, the connection portion is in the opposite direction. The portion overlapped with the outer corner portion is positioned as close to the inner side in the opposite direction. As a result, even if the length of a connection part is not changed, since the length of the part located outside a housing becomes short, a connector becomes small in the said opposing direction. In addition, since the length of the connection portion itself is not shortened, electrical conduction between the connector and the circuit board is not unstable, and the fixing strength of the connector to the circuit board is not lowered.

In the present invention, it is preferable that at least part of the lower end overlaps the inner corner portion in the opposite direction of the side wall. At least a part of the lower end of the outer corner portion overlaps the inner corner portion in the opposite direction of the side wall, whereby the connecting portion of the terminal can be further positioned inward in the opposite direction by the overlapping portion, leading to the outside of the housing of the connecting portion. The length of the part can be shortened. Therefore, the connector can be made smaller in the opposite direction.

In the present invention, the outer corner portion is preferably inclined or bent so as to be closer to the inner corner portion from the upper end toward the lower end.

In the present invention, the inner corner portions may be positioned to be connected to the terminals of the mating connector at positions near the upper end and exposed toward the inside of the accommodation space. When the inner corners are connected to the terminals (relative terminals) of the mating connector at positions near the upper end, when the connectors are fitted together, the inner corners and the side walls are separated from the mating terminal or the housing supporting the mating terminals. Receiving the pressing force toward the outside in the opposite direction, the side wall was folded outward with the lower portion as a point. As in the prior art, when the inner corners and the outer corners extend straight in parallel with predetermined intervals throughout the vertical direction, the predetermined intervals are formed similarly to the upper ends at the lower ends of both corners, and the intervals The outer side portions act so as to generate an opposing moment that resists the pressing force, so that the side walls are less likely to bend outward. Therefore, since the inner corners are less likely to be bent at the time of connection with the terminal of the mating connector, the insertion force required for insertion of the mating connector is increased.

On the other hand, in the present invention, the lower end of the outer corner is located closer to the inner side, i.e., the inner corner than the upper end, so that the gap between the lower ends does not occur or is small, so that the opposite moment that the outer corners generate is difficult to act. . Therefore, the side walls and the inner corner portions tend to bend outward with the lower portion as a point, so that the insertion force required for the insertion of the mating connector can be reduced at the time of connector fitting.

In the present invention, the supported portion may be supported by the housing by integrally forming the terminal with the housing. In addition, the terminal may be formed in at least one of the inner corner portion, the outer corner portion, and the connecting corner portion of the terminal, and may be press-supported to the side wall from the supported portion.

As mentioned above, in this invention, since the outer edge part of a terminal is located inward in the opposing direction of a side wall rather than the upper end, at least one part of a connection part is said outer side in the said opposite direction in the lower position of an outer corner part. The connecting portion can be positioned inward in the opposing direction by one overlapping with each corner. Therefore, even if the length of the connecting portion is not changed, the length of the portion of the connecting portion located outside the housing can be shortened, and the connector can be downsized in the facing direction. In addition, since the length of the connection portion itself does not have to be shortened, the electrical conduction between the connector and the circuit board becomes unstable and the fixed strength of the connector to the circuit board can be avoided.

1: is a perspective view of the connector which concerns on 1st Embodiment, and has taken the cross section in the position of the terminal in the housing longitudinal direction, and has shown the part in the said longitudinal direction.
Fig. 2 is a cross-sectional view at the position of the terminal in the housing longitudinal direction of the connector and the mating connector according to the first embodiment, showing a state before connector fitting.
FIG. 3 (A) is a perspective view of the connector according to the second embodiment, which takes a cross section at the position of the terminal in the housing longitudinal direction and shows a part in the longitudinal direction, and (B) denotes (A The cross section of the connector of () is the figure seen from the longitudinal direction of a housing.
4: (A) is a perspective view of the connector which concerns on 3rd Embodiment, and takes a cross section at the position of the terminal in the housing longitudinal direction, and shows a part in the said longitudinal direction, (B), (A) The cross section of the connector of () is the figure seen from the longitudinal direction of a housing.

(Mode for carrying out the invention)

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of the electrical connector for circuit boards which concerns on this invention is described based on an accompanying drawing.

<1st embodiment>

[Configuration of Connector]

FIG. 1: is a perspective view of the connector 1 which concerns on this embodiment, and has shown the cross section in the position of the terminal 20 in a housing longitudinal direction. 2 is sectional drawing in the position of the terminal 20 in the housing longitudinal direction of the connector 1 and the mating connector 2 which concerns on this embodiment, and has shown the state before connector fitting.

The connector 1 which concerns on this embodiment is an electrical connector arrange | positioned on a circuit board (not shown), accommodates the counterpart connector 2 from upper direction, and is fitted and connected to the counterpart connector 2, and is substantially rectangular parallelepiped A housing 10 made of synthetic resin, a plurality of metal terminals 20 arranged and supported on the housing 10 in the longitudinal direction of the housing 10, and a longitudinal direction of the housing 10. That is, it has the fixing bracket 30 supported by the said housing | casing 10 at both outer positions with respect to the arrangement | positioning range of the terminal 20 in a terminal arrangement direction.

As shown in FIG. 1 and FIG. 2, the housing 10 includes a bottom wall 11 extending in a direction in which the terminal arrangement direction is long, facing a surface of a circuit board (not shown), and 2 described later. The protruding wall portion 12 which extends in the longitudinal direction between the two side walls 13 and protrudes upward from the bottom wall 11 and rises upward from the bottom wall 11, It has a surrounding wall. The circumferential wall includes two side walls 13 extending in the longitudinal direction opposite to each other, and two ends extending in the shorter direction perpendicular to the longitudinal direction by connecting end portions of the two side walls 13 to each other. It has four end walls 14. The rectangular annular space opened upward between the circumferential wall and the protruding wall portion 12 is formed as a receiving recess 15 for accommodating the fitting portion of the mating connector 2.

The protruding wall portion 12 has a restricting protrusion 12A at a position corresponding to the terminals 20 adjacent to each other in the longitudinal direction. The regulating protrusion 12A protrudes in the shorter direction from the side surface of the protruding wall portion 12 facing the inner side surface of the side wall 13 and extends in the vertical direction. 12A of the said regulation protrusion part abuts with the fitting part of the mating connector 2 by the protrusion part in the short direction of the housing 10 in a connector fitting process and a connector fitting state. The position of the mating connector 2 in the shorter direction is regulated. As a result, the so-called "sedimentation" in which the elastic arm part is damaged due to excessively pressurizing and displacing the elastic arm part 22 of the terminal 20 to be described later can be prevented. have.

The protruding wall portion 12 has a side that sinks in the shorter direction at positions between adjacent regulating protrusions 12A, and allows the elastic displacement of the elastic arm 22 of the terminal 20 to be described later. The displacement tolerance groove portion 12B is formed. As shown in FIG. 1 and FIG. 2, the displacement allowable groove 12B is formed on both side surfaces of the protruding wall 12, and the displacement allowable groove 12B of the side is the protruding wall 12. In the upper part, it divides in the short direction (left-right direction in FIG. 2) by the partition wall part 12C extended downward from an upper end, and each comprises the groove part extended in an up-down direction, and in the lower part, both The displacement allowable groove portions 12B communicate with each other in the shorter direction to form one slit-shaped space opened downward.

As shown in FIGS. 1 and 2, the bottom wall 11 penetrates in a window shape in a vertical direction at a center position in the short direction at a position corresponding to the terminal 20 in the long direction. The outer space and the displacement allowable groove portion 12B are in communication. Moreover, as for the said bottom wall 11, the groove part 11A is formed in the lower side of the said side wall 13, but the both ends in the said short direction do not reach below the side wall 13. As shown in FIG. The connection part 24 of the terminal 20 mentioned later is located in the said groove part 11A, between the upper surface of the said connection part 24 and the lower surface of the side wall 13, and the said connection part 24 and the bottom wall 11 A space is formed between the side surface of the back side. When the connection part 24 is solder-connected to the corresponding circuit part of a circuit board, molten solder will flow in the said space. The bottom wall 11 is formed with a partition wall 11B for separating the groove portions 11A adjacent to each other at positions between the terminals 20 adjacent to each other in the longitudinal direction.

The terminal 20 is formed by bending a piece of metal plate in a substantially horizontal S-shape in the plate thickness direction, and is supported by the housing 10 in a state in which two pieces are arranged symmetrically with respect to the protruding wall portion 12. The terminal 20 is located at a position near the inverted U-shaped supported portion 21 supported by the side wall 13 of the housing 10 and the protruding wall portion 12 in the shorter direction of the housing 10. An elastic arm 22 extending in the up and down direction and having a free end, and supported by the bottom wall 11 of the housing 10 and extending in the shorter direction and having one corner portion of the supported portion 21 (inner corner described later). (21A) extends out of the housing 10 from a base portion 23 connecting the elastic arm 22 and the other corner portion (outer corner portion 21B described later) of the supported portion 21. And a connecting portion 24 which is soldered to the corresponding circuit portion on the circuit board. 1 and 2, the terminal 20 is supported by the integral molding with the housing 10 at the supported portion 21 and the base 23. As shown in FIG.

The elastic arm portion 22 is bent from the base portion 23 through the transition portion 25 and extends upward along the protruding wall portion 12, and is bent in the plate thickness direction by the bending. Elastic displacement is possible in the lateral direction. The elastic arm part 22 is formed as a connection part 22A for connecting the upper end part which is the free end side to convex curve toward the side wall 13, and to connect with the mating terminal 50 of the mating connector 2 mentioned later. The curved part of the connection part 22A protrudes more than the protrusion part of the regulation protrusion part 12A of the housing 10 in the said short direction.

As shown in FIG. 1, the base 23 is supported by the bottom wall 11 of the housing 10 by integral mold molding. As for the said base 23, the upper surface of the said base 23 and the upper surface of the bottom wall 11 form the same level surface, the upper surface of the said base 23 is exposed to the receiving recessed part 15, and the said upper surface The lower portion is buried in the bottom wall 11.

As shown in FIG. 2, the supported portion 21 has an inverted U-shape as described above and extends in the vertical direction along the inner side surface of the side wall 13. "Inner corner portion 21A" and the other corner portion 21B (hereinafter referred to as "outer corner portion 21B") extending in the up-down direction from a position outside the inner corner portion 21A in the shorter direction. ) And a connecting portion 21C connecting the upper end 21A-1 of the inner corner portion 21A and the upper end 21B-1 of the outer corner portion 21B.

The inner corner portion 21A is exposed toward the inside of the accommodation recess 15 and protrudes into the accommodation recess 15 so as to face the contact portion 22 at a position near the upper end 21A-1 ( 21A-3) is formed. As shown in FIG. 1, the said locking part 21A-3 is formed by press work etc., for example, The width dimension (dimension in the longitudinal direction of a housing) is the said inner corner part 21A. It is smaller than the width dimension of (refer FIG. 1). The locking portion 21A-3 is engaged with the to-be-locked portion 51B-1 of the mating terminal 50 of the mating connector 2, which will be described later, thereby maintaining the connector fitting state and pulling out the connector. In addition, the contact portion 22A is also assisted by contacting and electrically conducting during engagement with the locked portion 51B-1.

As shown in FIGS. 1 and 2, the outer corner portion 21B is located within the range of the side wall 13 in the shorter direction of the housing 10, and the lower end portion 21B-2 from the upper end 21B-1. The lower end 21B-2 is inwardly located in the shorter direction than the upper end 21B-1 so as to be inclined so as to be closer to the inner corner portion 21A. As shown in FIG. 2, the outer corner portion 21B is positioned so that a part of the lower end 21B-2 overlaps the inner corner portion 21A in the shorter direction.

In the state where the supported portion 21 is supported by the side wall 13 by integral mold molding, the inner corner portions 21A have both end surfaces (cross sections on both sides in the longitudinal direction of the housing) and the outer corner portions 21B. The plate surface opposite to) is supported by the side wall 13, and the plate surface exposed from the side wall 13 forms the same surface as the inner surface of the side wall 13. As shown in FIG. In addition, the outer corner portion 21B and the connection portion 21C are embedded in the side wall 13.

As shown in FIGS. 1 and 2, the connecting portion 24 is bent and extended outward in the shorter direction in a space formed just below the lower end of the side wall 13 described above, and the connecting portion 24 is extended. ) Is located at substantially the same height as the bottom surface of the bottom wall 11, the solder connection with the corresponding circuit portion of the circuit board is enabled. As shown in FIG. 2, the tip (free end) of the connecting portion 24 is located slightly outside of the position of the outer side of the side wall 13 in the shorter direction to the extent that it can be visually seen from the outside. have.

As described above, the outer corner portion 21B is inclined from the upper end 21B-1 to the lower corner 21B-2 so as to be closer to the inner corner portion 21A, and thus the lower end 21B of the outer corner portion 21B. The connecting portion 24 extending outward from -2) toward the outside in the shorter direction is located within a range in which a part thereof overlaps with the outer corner portion 21B in the shorter direction as shown in FIGS. 1 and 2. have. Therefore, as compared with the case where the outer corner portion extends straight in the vertical direction in parallel with the inner corner portion as in the prior art, and the connection portion is directed out of the housing from the lower end of the outer corner portion, in the present embodiment, the connection portion 24, It is located inward from the shorter direction by the part overlapping with the outer corner portion 21B.

As a result, even if the length of the connection part 24 is not changed, since the length of the part located outside the housing becomes short, the connector 1 can be made small in the said short direction. As described above, since a part of the lower end 21B-2 of the outer corner portion 21B overlaps with the inner corner portion 21A in the shorter direction, the connecting portion 24 is divided by the overlapped portion. In addition, it can be located inside in the said shorter direction, and the length of the part extended to the outer side of the housing 10 of the connection part 24 can be shortened. Therefore, the connector can be made smaller in the shorter direction. In addition, instead of this embodiment, when it is set as the structure by which all but not part of the lower end 21B-2 of the outer corner part 21B overlaps with the inner corner part 21A in the said short direction, a connector ( It goes without saying that 1) can be further miniaturized in the shorter direction.

In this embodiment, since the length of the connection part 24 itself does not become short compared with the conventional thing, in the state in which the said connection part 24 was solder-connected with the circuit board, the electrical connection of the connector 1 and a circuit board is carried out. Conduction does not become unstable, and the fixation strength of the connector 1 to a circuit board does not fall.

The fixing bracket 30 is made by bending a metal plate piece in the plate thickness direction, and is formed at four corners in the planar shape of the connector 1. The fixing bracket 30 includes a supported portion (not shown) supported on the end wall 14 by integral mold molding, and a fixed portion that is bent at the lower end of the supported portion and extends outward in the shorter direction ( 31) The fixing bracket 30 contributes to the improvement of the fixing strength of the connector 1 to the circuit board by soldering the fixing part 31 to the upper surface of the circuit board. The tip (free end) of the fixing part 31 is located at the same position as the tip of the connecting portion of the terminal 20 in the shorter direction.

[Configuration of Relative Connector]

The state connector 2 shown in FIG. 2 is a connector attached to another circuit board (not shown), and has a frame-shaped fitting part suitable for the accommodating recessed part 15 of the connector 1, The said fitting By inserting into the accommodation recess 15, the connectors are fitted to each other. As shown in FIG. 2, the mating connector 2 is formed of a synthetic resin housing 40 made of a substantially rectangular parallelepiped and integrally molded to the housing 40 in the longitudinal direction of the housing 40. It has a some metal terminal 50 (henceforth "relative terminal 50") arrange | positioned and supported by this.

The housing 40 has a bottom wall 41 facing the other circuit board and a peripheral wall rising from the bottom wall 41. The housing 40 is surrounded by the bottom wall 41 and the peripheral wall, Is formed as a receiving recess 45 for receiving the projecting wall portion 12 of the housing 10 of the connector 1 in the connector fitting state. The circumferential wall has two side walls 43 extending in the longitudinal direction opposite to each other, and the side walls 43 support the mating terminals 50.

The mating terminal 50 is formed by bending a piece of metal plate in a plate thickness direction, and forms two rows symmetrical in the shorter direction (left and right direction in FIG. 2) of the housing 40 to form the longer side of the housing 4. It is supported by the housing 40 in a state arranged in the direction. U-shaped fitting part 51 supported by the said side wall 43, and one corner part 51A located in the accommodating recess 45 side among the two parts of the said fitting part 51 (following) And a connecting portion 54 which is soldered to the corresponding circuit portion of the other circuit board extending in the shorter direction through the curved transition portion 55 from the "inner corner portion 51A". As shown in FIG. 2, the mating terminal 50 is supported by the integral part molding with the housing 40 at the fitting portion 51 and the transition portion 55.

The fitting portion 51 is embedded in the side wall 43 so as to extend the side wall 43 from below. As for the said insertion part 51, the inner side surface and the side circumference of the U-shaped part are supported by the side wall 43, and the outer side surface of the said U-shaped part exposed from the said side wall 43 is the side wall 43 It is located to form the same surface as the outer surface of). The dimension of the said insertion part 51 in the short direction (left-right direction in FIG. 2) of the housing 40 is the contact part 22A of the terminal 20 of the connector 1, and the locking part 21A-3. It is slightly larger than the gap with).

As for the plate surface of 51 A of inner corner parts 51 of the said fitting part 51 located in the accommodation recess 45 side, the part of the position (upper position in FIG. 2) near the bottom wall 41 is a connector plug. It is formed as the corresponding contact part 51A-1 which contacts with the contact part 22A of the terminal 20 of the connector 1 with a contact pressure in the fitting state. In addition, the plate surface of the other corner part 51B (henceforth "outer corner part 51B") of the said fitting part 51 located away from the accommodating recess 45 is near the bottom wall 41. FIG. A portion of the position (upper position in FIG. 2) sinks to form a recess, and the recess functions as a lock portion 51B-1 in which the recess engages with the locking portion 21A-3 of the terminal 20. do.

As shown in FIG. 2, the contact portion 54 has a lower surface (upper surface in FIG. 2) of the connection portion 54 located at substantially the same height as the lower surface (upper surface in FIG. 2) of the bottom wall 41. Solder connection with the corresponding circuit part of a circuit board is attained.

[Fitting behavior of connector]

Hereinafter, the fitting operation | movement of the connector 1 and the mating connector 2 is demonstrated. First, the terminal 20 of the connector 1, the fixing bracket 30, and the terminal 50 of the mating connector 2 are each solder-connected to the corresponding circuit board. Next, as shown in FIG. 2, the connector 1 is in an attitude in which the housing recess 15 is opened upward, and the housing connector 45 is opened downward in the mating connector 2. It is brought to the upper position of the said connector 1 as a posture. And as shown by the arrow in FIG. 2, it moves below the mating connector 2, and makes the fitting part of the mating connector 2 into the receiving recess 45 of the connector 1. As shown in FIG.

As a result, the fitting part 51 of the mating terminal 50 of the mating connector 2 extends between the contact part 22A and the locking part 21A-3 of the terminal 20 of the connector 1, Enter. Then, the contact portion 22A is pressed toward the displacement allowable groove portion 12B, so that the elastic arm 22 is elastically displaced to enter the displacement allowable groove portion 12B. Moreover, when the insertion part 51 enters, the contact part 22 will contact with the contact part 51A-1 of the said fitting part 51 with the contact pressure, and the said locking part 21A -3) engages with the to-be-locked part 51B-1 of the said fitting part 41 in an up-down direction. As a result, the terminals of the connectors are electrically connected to each other and locked to each other, so that the fitting connection between the connectors is completed.

As described above, the fitting portion 51 of the mating connector 2 extends between the contact portion 22A and the locking portion 21A-3 of the terminal 20 of the connector 1 to enter the connector. At the time of fitting, the inner corner portion 21A of the connector 1 receives the pressing force toward the outside in the shorter direction of the housing 10 from the fitting portion 51, and the side wall 13 as described above. ) Was cut outward with the bottom as a point.

In the present embodiment, the lower end 21B-2 of the outer corner portion 21B is located closer to the inner side, that is, closer to the inner corner portion 21A in the shorter direction than the upper end 21B-1, and the lower end of the inner corner portion 21A. Since the space | interval of 21A-2 and the lower end 21B-2 of the outer corner part 21B is small, the opposing moment which the outer corner part 21B generate | occur | produces is hard to work. Therefore, since the side wall 12 and the inner corner portion 21A tend to bend outward with their lower portion as a point, the insertion force required for the insertion of the mating connector 2 can be reduced at the time of connector fitting.

&Lt; Second Embodiment >

The present embodiment differs from the first embodiment in which the terminal is supported by the housing by integral mold molding in that the terminal is pressed into the side wall of the housing from above and supported by the housing.

FIG. 3 (A) is a perspective view of the connector according to the second embodiment, illustrating a cross section at the position of the terminal in the housing longitudinal direction, and FIG. 3 (B) shows the connector of FIG. 3 (A). It is the figure which looked at the cross section from the housing longitudinal direction. The connector 3 according to the present embodiment has a configuration in which the terminal 70 is press-supported from above by the side wall 63 of the housing 60. In FIG. 3 (A) and (B), with respect to the terminal 70, in the part corresponding to each part of the terminal 20 of 1st Embodiment, the code | symbol of each part of the said terminal 20 is "50". Is added to the sign.

The housing 60 in this embodiment has the bottom wall 61, the protruding wall part 62, the side wall 63, the end wall 64, and the accommodating recessed part 65, The basic shape is 1st Embodiment Although the shape of the bottom wall 61, the protrusion wall part 62, and the side wall 63 of this embodiment is the same as that of the housing | casing 10 of this embodiment, the bottom wall 11, the protrusion wall part 12, the side wall ( 13) and the shape is different. Here, the shape of the bottom wall 61, the protruding wall portion 62, and the side wall 63 will be described.

As shown in FIGS. 4A and 4B, the bottom wall 61 has two side walls 63 facing each other in the shorter direction of the housing 60 (left and right directions in FIG. 3B). Extends over the entire range of the inner surfaces of the inner sides of the housing 60, and at the position of the terminal 70 in the longitudinal direction of the housing 60, as in the first embodiment, at the center position in the shorter direction as in the first embodiment. It does not penetrate in the up and down direction so as to communicate. In addition, as shown in FIG. 3, the said bottom wall 61 does not reach to the lower side of the side wall 63 at the both ends in the said short direction, but is mentioned later in the space formed below the said side wall 63. The connecting portion 74 of the terminal 70 is located. Moreover, 61 A of grooves for accommodating the base 73 of the terminal 70 mentioned later on the upper surface of the said bottom wall 61 in the position corresponding to the accommodation recessed part 65 in the said short direction. ) Is formed extending in the shorter direction.

The protruding wall portion 62 has a groove portion in which both side surfaces are opened and settled toward the storage space 65 over the entire vertical direction at a position corresponding to the terminal 70 in the longitudinal direction. By forming this groove part, the rough wall part 62A which protrudes toward the accommodating space 65 and is extended over the whole vertical direction is formed in the position corresponding to mutually adjacent terminals 70. As shown in FIG. The roughening wall portion 62A has a function of preventing "sedimentation" of the elastic arm 72 of the terminal 70 in the shorter direction in the same manner as the regulating protrusion 12A of the first embodiment. In addition, the protruding wall portion 62 includes the above-described groove portion between the rough wall portions 62A which are adjacent to each other, that is, the entire groove portion in the vertical direction at the position corresponding to the terminal 70 in the longitudinal direction. It accommodates the elastic arm part 72 of (), and is formed as the displacement tolerance groove part 62B which allows the elastic displacement of the said elastic arm part 72 to be allowable.

The side wall 63 has a terminal support groove 63A extending therethrough in a vertical direction at a position corresponding to the terminal 70 in the longitudinal direction. As will be described later, in the terminal support groove 63A, the supported portion 71 of the terminal 70 is press-fitted upward from two inner surfaces of the groove facing each other in the longitudinal direction, and the supported portion 71 is pressed. It is supported by the said groove inner surface. The terminal support groove 63A, the bottom groove 61A of the bottom wall 61, and the displacement allowance 62B of the protruding wall portion 62 communicate with each other to form a U-shaped groove as a whole. The groove portion functions as a terminal accommodating groove for accommodating the terminal 70.

The terminals 70 are supported by the housing 60 in a state of being arranged in the longitudinal direction of the housing 60 in two rows symmetrical with respect to the protruding wall portion 12. The said terminal 70 is made by bending a metal plate piece in substantially horizontal S shape in plate | board thickness direction, and connects the inverted U-shaped part 71, the elastic arm part 72, the base 73, and the connection part 74. As shown in FIG. Since it has, the basic structure is the same as the terminal 20 of 1st Embodiment. The inverted U-shaped portion 71 of the terminal 70 has an inner corner portion 71A, an outer corner portion 71B and a connection portion 71C similarly to the supported portion 21 of the first embodiment.

The outer corner portion 71B is a range of the side wall 63 of the housing 60 in the shorter direction of the housing 60 (left and right directions in FIG. 3B), as shown in FIG. 3B. It is located inside, and is inclined from the upper end 71B-1 toward the lower end 71B-2 so as to be closer to the inner corner 71A, and the lower end 71B-2 has a lower end 71B-2 than the upper end 71B-1. It is located inward from the shorter direction. Therefore, the connection part 74 which extends toward the outer side from the lower end 71B-2 of the said outer corner part 71B toward the outer side in the said short direction is the same as 1st Embodiment, and a part is outer corner part in the said short direction. It is located in a range overlapping with 71B. As a result, the connection part 74 is located inward from the said short direction by the part which overlaps with the outer corner part 71B, and the connector 3 can be made small in the said short direction by that much.

In this embodiment, the lower end 71B-2 of the outer leg part 71B does not overlap with the inner leg part 71A in the said short direction, and in this respect, the lower end 21B-2 of the outer leg part 21B. A part of is different from the first embodiment in which the inner corner portion 21A is overlapped. However, it goes without saying that the lower end 71B-2 of the outer leg 71B can be positioned so as to overlap the inner leg 71A so that the connector can be further downsized in the shorter direction.

As shown in FIG. 3 (A), the said outer corner part 71B has the indentation protrusion part 71B-3 as a to-be-supported part which protrudes from both end surfaces (cross sections on both sides in the longitudinal direction of a housing). In the present embodiment, the press-in protrusions 71B-3 of the outer corner portions 71B-3 press-fitted into the terminal support grooves 63A are dug into two groove inner surfaces of the terminal support grooves 63A facing each other. As a result, the terminal 70 is supported by the housing 60. In the state where the terminal 70 is supported by the housing 60, the inverted U-shaped portion 71, the elastic arm portion 72, and the base 73 of the terminal 70 are each a housing 60. In the terminal support groove 63A, the displacement allowable groove portion 71B, and the bottom groove 61A. In the present embodiment, the press-in protrusions 71B-3 are formed at both end surfaces of the outer leg 71B, but instead of or together with the press-in protrusions 71B-3, for example, the inside-angles. Indentation protrusions may be formed on both end surfaces of 71A and both end surfaces of the connecting portion 71C.

Also in this embodiment, similarly to 1st Embodiment, the lower end 71B-2 of the outer corner part 71B is located near the inner side and inner corner 71A in the said shorter direction than the upper end 71B-1. Since the side wall of the housing 60 tends to bend to the outside of the mating connector (not shown) at the time of connector fitting, the insertion force of the mating connector can be made small.

&Lt; Third Embodiment >

The third embodiment differs from the second embodiment in which the terminal is press-fitted from above in that the terminal is press-fitted from below into the housing. The connector of this embodiment has the same structure as the connector of 2nd embodiment except the bottom wall and the protrusion wall part of a housing. Hereinafter, about the housing | casing, the code | symbol which added "20" to the code | symbol of 2nd Embodiment is attached | subjected to the part same as 2nd Embodiment, description is abbreviate | omitted and it demonstrates centering around the structure of the said bottom wall and a protrusion wall part. In addition, since the terminal of this embodiment is a shape exactly the same as the terminal of 2nd Embodiment, it attaches | subjects the same code | symbol as 2nd Embodiment, and abbreviate | omits description.

4: (A) is a perspective view of the connector 4 which concerns on this embodiment, and has shown the cross section in the position of the terminal 70 in the longitudinal direction of the housing 80, and FIG. 4A is a cross-sectional view of the connector 4 in FIG. 4A as seen from the longitudinal direction of the housing 80. As shown to FIG. 4 (A), (B), the bottom wall 81 of the housing 80 of the connector 4 which concerns on this embodiment is the terminal 70 in the longitudinal direction of the said housing 80. At the position corresponding to the above, the housing 80 is formed only at the center position of the protruding wall portion 82 in the shorter direction (left and right direction in Fig. 4B). Therefore, the housing 80 is opened downward except the center position of the protruding wall portion 82, and enables the press-in of the terminal 70 from below. In this embodiment, the said protruding wall 82 has an upper wall 82C, and the cross section perpendicular | vertical to the said longitudinal direction has a T-shape, and the upper part of the displacement permissible groove 82B is 82C of the said upper walls Blocked by).

Also in the present embodiment, similarly to the second embodiment, the inverted U-shaped portion 71 of the terminal 70 is press-supported by the side wall 83 of the housing 80, so that the lower end portion of the outer corner portion 71B ( 71B-2 is located near the lower end 71A-2 of the inner corner portion 71A, and a part of the connection portion 74 is located within the range overlapping with the outer corner portion 71B in the shorter direction. Accordingly, the connector 4 can be made smaller in the shorter direction by the overlapping portion. In addition, since the sidewalls tend to bend when the connector is fitted, the insertion force of the mating connector can be reduced.

In the first to third embodiments, the terminals are arranged to be supported on both sides of the two side wall portions that face each other. Alternatively, the terminals may be arranged only on one side wall portion.

In the first to third embodiments, an example in which the present invention is applied to a receptacle connector has been described. However, the present invention is not limited thereto, and for example, the mating connector 2 shown in FIG. It is also possible to apply the same plug connector. In this case, for example, a terminal having a shape in which the elastic arm and the base are omitted from the terminals of the first to third embodiments may be supported on the side wall of the housing.

In the first to third embodiments, the outer corner portion of the terminal is inclined to be closer to the inner corner portion as it goes from the upper end to the lower end. Instead, the outer corner portion approaches the inner corner portion from the upper end toward the lower end. It may be curved. For example, the outer corner portion may be bent at an intermediate position in the up and down direction, and the lower portion may be inclined to extend toward the inner corner portion, and the outer corner portion may be bent in a crank shape at the intermediate position, and the lower portion may extend straight from the position near the inner corner portion. You may be. That is, the lower end of each outer side part may be located inside rather than the upper end.

1: Connector
2: mating connector
3: connector
4: Connector
10: Housing
13: sidewall
15: accommodation recess (accommodation space)
20: terminal
21: Supported part
21A: inner corner
21A-1: Top
21A-2: Bottom
21B: outer corner
21B-1: Top
21B-2: Bottom
21C: Connection
24: connection part
50: counter terminal
60 housing
63: sidewall
65: accommodation recess (accommodation space)
70: terminal
71A: inner corner
71A-1: Top
71A-2: Bottom
71B: Outer corner part
71B-1: Top
71B-2: Bottom
71B-3: Press-fit protrusion (supported part)
71C: Connection
74: connection part
80: housing
83: sidewall
85: accommodation recess (accommodation space)

Claims (6)

An electrical connector disposed on a circuit board to receive a mating connector from above and fit-fit to the mating connector, the housing having two sidewalls that stand in an up and down direction and extend in parallel to a surface of the circuit board, facing each other; And a plurality of terminals arranged on at least one sidewall of the two sidewalls, wherein the housing is provided with an accommodation space for accommodating the mating connector between the inner side surfaces of the two sidewalls facing each other. The terminal is supported by the side wall, and includes an inner corner portion extending in an up and down direction at a position on the storage space side in the opposite direction between the side walls, and an upward and downward direction at a position outside the inner corner portion in the opposite direction. An outer corner portion extending from the outer surface, a connecting portion connecting upper ends of the inner corner portion and the outer corner portion, and the outer portion In from the lower end portion in the opposite direction and extend toward the outer electrical connector for a circuit that has a solder connection portion which is connected to a corresponding circuit on the circuit board substrate,
The said outer corner part is the lower end of the said outer corner part located inward from the upper direction rather than an upper end, and the said connection part is located in the range which at least one part overlaps with an outer corner part in the said opposite direction, The electric for circuit boards characterized by the above-mentioned. connector. The method of claim 1,
The outer connector is an electrical connector for a circuit board in which at least a portion of the lower end overlaps with the inner corner in the opposite direction of the side wall. The method according to claim 1 or 2,
An electrical connector for a circuit board, wherein the outer corners are inclined or bent to approach the inner corners from the upper end to the lower end. 4. The method according to any one of claims 1 to 3,
The inner corner portion is exposed to the inside of the accommodation space and is positioned to be in contact with the terminals of the mating connector at a position near the upper end. 5. The method according to any one of claims 1 to 4,
The terminal is an electrical connector for a circuit board, wherein the supported portion is supported by the housing by integral molding with the housing. 5. The method according to any one of claims 1 to 4,
The terminal is an electrical connector for a circuit board, wherein the supported portion is formed on at least one of the inner corner portion, the outer corner portion, and the connecting corner portion, and is press-supported to the side wall from the supported portion.

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