JP2007115579A - Electric connector for circuit board - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connector with terminals arrayed at one side edge part of a housing with an absorbing part enabling automatic mounting. <P>SOLUTION: The electric connector 1 to be mounted on a circuit board has terminals 20 arrayed at one side edge part of the two side edge parts making up longer sides of a housing directly extended along a face of the circuit board, and connecting parts 23 of the terminals to be connected with the circuit board are extended outward from that one side edge part. A face made by extending and projecting a top face of the housing 11 at the other side edge part is provided as an absorbing part 40. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an electrical connector attached to a circuit board, and more particularly to a connector extending straight along the surface of the circuit board.

  As this type of connector, a connector as shown in FIG. 7 of the accompanying drawings is known.

  In the connector 50 in FIG. 7, a plurality of terminals 52 are provided at regular intervals in the longitudinal direction on one side edge side of two side edges extending in the longitudinal direction of a housing 51 that extends in a straight line. This terminal 52 has a contact portion 52A on one inner surface of a fitting recess 53 formed in the housing 51 and opened upward, and a mating connector (not shown) is fitted into the fitting recess 53. Sometimes, the contact portion 52A comes into contact with the mating terminal. Further, the terminal 52 has a connection portion (not shown) for extending outward from the arranged one side edge portion for connection to the circuit board.

On the other hand, the other side edge 51A of the housing 51 is for forming a side wall for forming the fitting recess 53, and the wall thickness is not so large. Therefore, the width of the upper surface is narrow.
Not found

  When the circuit board connector is arranged on the circuit board, the automatic mounting machine often brings the connector from a standby position of the connector to a predetermined position on the circuit board. The automatic mounting machine has suction means, and sucks the connector to the predetermined position.

  For example, in the case of a connector configured such that the connector of FIG. 7 is provided with another row of terminals symmetrically with respect to the other side edge portion and having two rows of terminals, the partition between the two rows of terminals However, the upper surface of the connector can be made relatively wide due to the structure of the connector, so that the upper surface can be brought to a predetermined position by the automatic mounting machine using the suction portion.

  However, in a connector in which terminals are arranged only on one side edge as in the connector of FIG. 7, the terminal is obstructed on one side edge and no suction part is provided, and on the other side edge, An area sufficient for adsorption cannot be secured on the upper surface. Therefore, there was the inconvenience that automatic mounting was not possible.

  An object of the present invention is to provide an electrical connector for a circuit board that enables automatic mounting even if the connector is arranged on only one side.

  The present invention is an electrical connector mounted on a circuit board, and a terminal is provided on one side edge side of two side edges forming a longitudinal direction of a housing extending straight along a surface of the circuit board. The present invention relates to an electrical connector for a circuit board in which a connection part of the terminals arranged and connected to the circuit board extends outward from the one side edge part.

  In such an electrical connector for circuit board, the present invention is characterized in that a surface that extends and extends the upper surface of the housing at the other side edge is provided as an adsorption portion.

  According to the present invention having such a configuration, the suction portion can be formed using the housing side edge portion on the side where the terminals are not arranged, and automatic mounting is enabled.

  In the present invention, it is sufficient that the suction portion is formed at least in the central portion in the longitudinal direction of the housing.

  Further, preferably, in the present invention, the suction portion has an attachment portion for attaching the auxiliary suction member, and corresponds to a necessary suction area by an automatic machine.

  The present invention provides an electrical connector for a circuit board that extends in a straight shape as described above, and even if the terminals are arranged only on one side edge, the other side edge on which the terminals are not arranged Utilizing this, the upper surface of the other side edge can be extended outward to form a suction portion here, and as a result, the connector can be automatically mounted.

  Hereinafter, an embodiment of an electrical connector for a circuit board according to the present invention will be described with reference to FIGS. 1 to 6 of the accompanying drawings.

  FIG. 1 is a perspective view showing the entire connector of the present embodiment, and FIG. 2 is a plan view thereof. In both figures, the ground plate attached to the connector is not shown in the left half of the connector in the longitudinal direction.

  The connector 1 is arranged on a circuit board (not shown) and extends long to the left and right as shown. The connector 1 is configured by selectively attaching a ground plate 30 to a connector body 10.

  The connector body 10 has a plurality of terminals 20 planted at regular intervals on one outer surface 12 side of both outer surfaces 12 and 13 located in the longitudinal direction of a housing 11 made of an electrically insulating material and extending in the left and right direction. It is installed.

  The housing 11 is formed with a fitting recess 14 that opens up to the vicinity of both ends in the longitudinal direction, and one of the side walls 15 extending in the longitudinal direction among the peripheral walls forming the fitting recess 14. Terminals 20 are arranged in the array. The fitting recess 14 is located at the center in the width direction perpendicular to the longitudinal direction, and the housing 11 has a thin bottom as seen in FIG. 3 showing a sectional view taken along line III-III in FIG. It is formed deep enough to leave the wall 11A. In FIG. 3, the fitting recess 14 is recessed in the upper and lower ranges from the position of the upper opening 14 </ b> A to the bottom 14 </ b> B, which is the upper surface of the bottom wall 11 </ b> A, and is recessed from the inner side 14 </ b> C on the one side wall 15 side. Are formed at positions corresponding to the terminals. The housing groove 16 has an immersion depth that houses most of the elastic arm portion of the terminal described later. Shallow grooves 17 connected to the receiving grooves 16 are also formed on the upper end surface and the outer surface of the side wall portion 15.

  The terminal 20 attached to the housing 11 by the housing groove 16 and the groove 17 is formed by bending a thin metal plate strip with respect to the plate surface, and the cross-sectional shape at a plane perpendicular to the plate surface is As can be seen in FIG. 3, it is substantially S-shaped. This terminal has a substantially S-shape as a whole by continuously having an inverted U-shaped portion and a U-shaped portion. In FIG. 3, the terminal 20 includes an inverted U-shaped fitting portion 21, an elastic arm portion 22 connected to the U-shaped portion, and a connecting portion 23 extending from the lower end portion of the fitting portion 21. have.

  The fitting portion 21 is press-fitted into the accommodation groove 16 from above, and the terminal 20 is fixedly held on the housing 11. A connecting portion 23 bent and extended laterally from the lower end of the fitting portion 21 outside the housing 11 is at the same level as the bottom surface of the housing 11, and when the connector is arranged on the circuit substrate, the circuit substrate It comes in contact with the corresponding circuit part.

  The elastic arm portion 22 is bent from the lower portion of the fitting portion 21 fitted in the receiving groove 16 and extends upward, and has elasticity that makes this portion flexible. The free end portion, which is the upper end side of the elastic arm portion 22, has a contact portion 22 </ b> A that is convexly bent toward the outside of the housing groove 16. The contact portion 22A slightly protrudes from the inner side surface 14C toward the inside of the fitting recess 14, and when the mating connector is fitted into the fitting recess 14, the receiving groove 16 receives a pressing force from the mating connector. It is elastically displaced to the position of the inner side surface 14C toward the inside.

  The portion of the housing 20 on the outer surface where the fitting portion 21 is housed in the groove 17 slightly protrudes from the opening edge of the groove 17 to form a sub-contact portion 21A that contacts the terminal of the mating connector. As a preferred form, a protrusion 21A1 is formed that ensures contact with the mating connector and provides a locking function.

  The housing 11 has ground plate mounting portions 11B as shown in FIG. 4 showing a cross section taken along line IV-IV in FIG. The ground plate 30 attached to the ground plate attachment portion 11B is made by, for example, punching and bending a single metal plate, and each of the housings 11 can be seen as shown in FIGS. Ground body portions 31 and 32 positioned along the outer side surfaces 12 and 13, and connecting portions 34 and 35 that connect the ground body portions 31 and 32 and the attachment portion 33. The connecting portions 34 and 35 are provided at a lower portion of the mounting portion 33 attached to the ground plate mounting portion 11B and at a lower portion of the ground main body portions 31 and 32 so as to come into contact with the circuit board at both longitudinal end positions of the housing 11. The two are linked together. In this embodiment, a mounting hole 36 is formed in the connecting portion 35.

  The ground main body 31 has a surface substantially parallel to the other outer surface 13 of the housing 11 and is spaced from the outer surface 13. The upper edge of the ground main body 31 is substantially at the same level as the upper surface of the housing 11, and a curved protrusion 31 </ b> A is provided above the upper edge of the ground main body 31 only at both ends in the longitudinal direction. Therefore, when the mating connector is fitted, the upper edge of the ground body portion 31 does not interfere with the cable extending in the horizontal direction from the mating connector on the ground body portion 31 side. That is, since the upper edge is at the upper surface position of the housing 11, the cable is allowed to extend at an upper position thereof. However, in order to further improve the shielding effect by the ground plate, a notch is formed only at the position where the cable extends, and the upper edge is further up, for example, the bent protrusion is excluded from the notch position. It is good also as forming in the longitudinal direction whole range.

  As in the case of the ground main body portion 31, the ground main body portion 32 has a surface substantially parallel to the one outer surface 12 of the housing 11, and a space is formed between the outer surface 12. This interval is set larger than the interval in the case of the ground main body 31. The connecting portion 23 of the terminal 20 is located in the space between the ground main body portion 32 and the outer surface 12 of the housing 11. Since the ground main body 32 and the mounting portion 33 are connected by the connecting portion 35 in the longitudinal direction both ends, that is, in the terminal absence region in the same direction, there is a space between the ground main body portion 32 and the mounting portion 33. In addition, the connecting portion 23 can be in contact with the corresponding circuit portion of the circuit board. The ground main body portion 32 has two kinds of bent portions 32A. 32B is alternately provided in the longitudinal direction. One bent portion 32A is wide, and the other bent portion 32B is narrow. The other bent portion 32B is directed inward from the one bent portion 32A and extends obliquely to form an elastic tongue piece. The elastic tongue piece is attached to the mating ground plate when the mating connector is fitted. A contact portion is formed that makes an elastic contact.

  As shown in FIG. 4, the mounting portion 33 has an inverted U shape so as to be fitted to the ground plate mounting portions 11 </ b> B provided at both longitudinal ends of the housing 11. The outer surface of the inverted U-shaped attachment portion 33 is also a portion where the engaging portion to which the mating connector corresponds is fitted from above. Such an attachment part 33 has a lock part on the outer surface of both shoulder parts. This lock portion has a protruding shape, and includes a main lock portion 37A located on the side where the cable of the mating connector extends and a sub-lock portion 37B located on the opposite side. The protrusion amount of the main lock portion 37A is larger than the protrusion amount of the sub lock portion 37B. That is, the engagement amount with the corresponding lock portion to the mating connector is set larger in the main lock portion 37A. The difference in the protruding amount is set in proportion to the difference in the magnitude of the force received from the mating connector when the mating connector is to be removed by the force that lifts the cable.

  The housing 11 has a suction portion 40 at the center position in the longitudinal direction of the housing 11 on the other outer surface 13 side. The suction portion 40 forms a portion to be sucked by the suction member of the automatic machine when the connector is mounted and arranged at a predetermined position on the circuit board by the automatic machine, and the upper surface 40A is the same level surface as the upper surface of the housing. It protrudes in the width direction of the housing. The protruding side surface 40B of the suction portion 40 is close to the described ground main body portion 31. On the upper surface of the suction portion 40, mounting holes 41 for mounting the auxiliary suction member are formed at both ends in the longitudinal direction. When only the upper surface 40A of the suction portion 40 is not compatible with an automatic machine, an auxiliary suction member for enlarging the suction surface is attached at the mounting hole 41. The suction part 40 is preferably provided within the width range of the mating connector.

  The mating connector fitted to the connector of this embodiment is configured as shown in FIG. FIG. 6 is a view showing a use state of the connector of this embodiment in which the mating connector is fitted. FIG. 6A shows a state in which the connector of this embodiment is used without a ground plate. ) Indicates when used with a ground plate.

  In FIG. 6A, the coaxial cable C2 held between the insulator and a part of the ground plate C1 of the mating connector C with a cable indicated by a two-dot chain line extends rightward in the lateral direction. . The central conductor C3 of the cable C2 is connected to the terminal C4. The terminal includes an inverted U-shaped portion and a U-shaped portion, and has a substantially S-shape as a whole. The ground plate C1 is attached to the outside of the connector, and the ground plate C1 covers the upper surface of the connector and the outer surface excluding the side surface on the cable extension side. The mating connector C receives the terminal 20 of the connector of the present embodiment inside the inverted U-shaped portion of the terminal C4, and the U-shaped portion of the terminal C4 enters the fitting recess 14 of the connector of the present embodiment.

  Such a connector of this embodiment is used in the following manner.

  First, the connector 1 is sucked by the suction member 40 (suction surface 40A) of the connector 1 by the suction member of the automatic machine, and this is brought to a predetermined position on the circuit board. Thereafter, the terminal connection portion 23 is connected to the corresponding circuit portion of the circuit board by soldering. The connector 1 can be used in either a state where the ground plate 30 is attached or a state where there is no ground plate (having only a portion for connecting the mating ground to the substrate). The ground plate 30 can be attached either before or after the connector is arranged on the circuit board. When the ground plate 30 is used, it may be fixed to the circuit board by soldering or the like in the mounting hole 36 shown in FIG.

  Next, as shown in FIGS. 6A and 6B, the mating connector C is fitted to the connector 1. The terminal C4 of the mating connector C comes into contact with the terminal 20 of the connector 1 at the inverted U-shaped portion. That is, the terminal C4 comes into contact with the sub-contact portion 21A of the terminal 20 of the connector 1 at one straight portion of the inverted U-shaped portion and represses the contact portion 22A at the other straight portion opposed to the terminal C4. The contact portion 22 </ b> A is compressed and sunk into the accommodation groove 16. Further, the U-shaped portion of the terminal C4 of the mating connector enters the bottom of the fitting recess 14. That is, the U-shaped portion of the terminal C4 enters downward to substantially the same position as the elastic arm 1 portion 22 of the connector 1 terminal. As a result, the linear path portion that contacts the contact portion 22A has a long contact path length in the fitting process, and can suppress the height of both connectors during fitting.

  When the ground plate 30 is attached to the connector 1, as shown in FIG. 6B, the ground body portions 31 and 32 cover the connector 1 from the side in a wide range extending in the longitudinal direction of the connector 1. Above, the ground plate C1 of the mating connector C covers both connectors C, 1. In the ground plate 30 of the connector 1, the contact portion 32 </ b> B formed as an elastic tongue piece contacts the ground plate C <b> 1 of the mating connector C and is electrically connected therewith.

  The cable C <b> 2 extending from the mating connector C is drawn out without interfering with the ground plate through the upper edge of the ground body portion 31.

  In the mating connector C, a lock portion (not shown) is engaged with the projecting lock portions 37A and 37B of the connector 1, thereby preventing the connectors from being unintentionally disconnected. When the cable C2 receives an unintended force upward, as shown in FIG. 5, the cable C2 receives a larger force than the lock portion 37B facing the lock portion 37A closer to the cable C2. However, since the locking portion 37A has a larger amount of locking than the locking portion 37B, it can be properly countered against the disconnection of the connector according to the distribution of the force as described above.

  When the mating connector C is detached, it is preferable to use a jig from the lock portion 37B side. In the present invention, the ground plate 30 is provided at both ends in the longitudinal direction, but may be provided in the housing 11. If the locking portion of the mating connector is provided on the mating ground plate, it is electrically connected to the locking portions 37A and 37B provided on the ground plate 30.

It is a perspective view of a connector with a ground plate as one embodiment of the present invention, and is a view in which a ground plate is omitted from the left half of the connector in the longitudinal direction. FIG. 2 is a plan view of the connector of FIG. 1, and a ground plate is not shown in the left half of the connector in the longitudinal direction as in FIG. 1. It is the III-III sectional view taken on the line in FIG. It is the IV-IV sectional view taken on the line in FIG. It is a side view which shows the connector of FIG. 1 with a mating connector. It is sectional drawing in the terminal position which shows the connector of FIG. 1 at the time of a mating connector fitting, (A) is a state without a ground board, (B) is a state with a ground board. It is a perspective view of the conventional connector.

Explanation of symbols

1 Connector
11 Housing
20 terminals
40 Suction part 41 Mounting part

Claims (3)

  An electrical connector mounted on a circuit board, wherein a terminal is arranged on one side edge side of two side edges forming a longitudinal direction of a housing extending linearly along the surface of the circuit board, and the circuit In a circuit board electrical connector in which a connecting portion of the terminal to be connected to a board extends outward from the one side edge, the housing upper surface at the other side edge extends outward and extends. An electrical connector for a circuit board, characterized in that a surface is provided as an adsorption portion.   The electrical connector for a circuit board according to claim 1, wherein the suction portion is provided at a central portion in a longitudinal direction of the housing.   The electrical connector for a circuit board according to claim 1 or 2, wherein the suction part is provided with attachment parts for attaching the auxiliary suction member at both end positions in the longitudinal direction of the housing.

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