JP2017033698A - connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To narrow a mounting area of a connector on a circuit board.SOLUTION: A connector 10 is equipped with a housing 20; and a plurality of contacts 30. The plurality of contacts 30 is aligned in two rows and fixed to the housing 20. The contacts 30 aligned in each row are composed of first contacts and second contacts alternately aligned. The first contacts have first terminal portions 31a soldered on a surface of a circuit board. The second contacts have second terminal portions 32a inserted in through-holes and soldered on the circuit board. Furthermore, of the two rows, in a first row and a second row, the contacts having the same kind of the terminal portions are disposed at positions where phases are shifted in an aligning direction.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a connector mounted on a circuit board, and more particularly to a connector preferably mounted on an FPC (Flexible Printed Circuit).

  Due to the demand for miniaturization, in recent years, connectors are also becoming increasingly smaller. However, even if only the connector is miniaturized, if the substantial mounting area cannot be reduced when the connector is mounted on a circuit board or the like, the meaning of miniaturization of the connector may be halved.

  For example, when a connector is mounted on an FPC, the connector is often mounted on an end portion of the FPC. When the connector is mounted on the end of the FPC, the wiring connected to the connector needs to be extended only in one direction in which the FPC extends. In this case, if wiring is performed using only one surface of the FPC, a wide mounting area is required from the necessity of wiring. Therefore, by using both front and back sides of the FPC, the area for wiring of the FPC is reduced.

  Patent Document 1 discloses a connector in which an SMT terminal portion soldered to the surface of a circuit board such as an FPC and a through-hole terminal portion inserted into a through-hole of the circuit board are mixed.

JP 2000-208185 A

  In the case of the connector disclosed in the above-mentioned Patent Document 1, the group of SMT terminal portions and the group of through-hole terminal portions are independent from each other, and hardly help to reduce the mounting area.

  In view of the above circumstances, an object of the present invention is to provide a connector having a small mounting area.

The connector of the present invention that achieves the above object provides:
A housing;
A plurality of contacts arranged in two rows in the arrangement direction and fixed to the housing;
The plurality of contacts are, for each row, a first contact having a first terminal portion soldered to the surface of the circuit board and a second terminal inserted into the through hole of the circuit board and soldered to the circuit board. The second contacts having a portion are alternately arranged, and in the first row and the second row of the two rows, the first contacts and the second contacts are at positions shifted in phase in the arrangement direction. It is characterized by being arranged in.

  The first contact has a first terminal portion. The first terminal portion is soldered to the surface of the circuit board. On the other hand, the second contact has a second terminal portion. The second terminal portion is inserted into the through hole of the circuit board. In the case of this second terminal portion, since it leads to the back surface of the circuit board, wiring can be made on the back surface. The first terminal portion of the first contact is soldered only to the front surface of the circuit board, and the wiring on the back surface does not have to avoid that portion.

  In the connector of the present invention, the first contacts and the second contacts having such characteristics are alternately arranged in each column. For this reason, the front and back surfaces of the circuit board can be alternately used for wiring for each column. The connector of the present invention includes two contact rows in which the first contacts and the second contacts are alternately arranged. Of the two columns, the first column and the second column are out of phase in the arrangement direction. For this reason, it is easy to avoid the overlap of the first row contact wiring and the second row contact wiring.

  Here, in the connector of the present invention, it is preferable that the first terminal portion and the second terminal portion are provided at positions different from each other in the lateral direction intersecting the arrangement direction for each row.

  In order to solder either the first terminal portion or the second terminal portion to the circuit board, an area for soldering is required around the terminal portion.

  The first contact and the second contact are alternately arranged for each column. In this case, if the first terminal portion and the second terminal portion are aligned in the arrangement direction, it is necessary to align the portions on the circuit board that require an area for soldering. That is, it is necessary to increase the wiring pitch, that is, the pitch of the contacts in the row so that the soldered portions do not interfere with each other.

  In the connector according to the present invention, the first terminal portion and the second terminal portion are provided at different positions in each row in the width direction intersecting the arrangement direction. If it carries out like this, the soldering part on a circuit board will be staggered for every row | line | column, and the pitch of a contact can be narrowed.

  In the connector of the present invention, it is preferable that the first terminal portion and the second terminal portion are provided side by side in the horizontal direction intersecting the arrangement direction for each row.

  As described above, the first row and the second row are configured so that the phases are shifted by 180 °, so that the layout of contacts on the connector and the dense wiring using both the front and back surfaces of the circuit board are possible. Wiring layout becomes easy.

  According to the contact of the present invention described above, the mounting area on the circuit board can be reduced.

It is the perspective view seen from the fitting surface side of the connector as one Embodiment of this invention. It is the perspective view seen from the mounting surface side to the circuit board of the connector shown in FIG. FIG. 3 is a side view of the connector shown in FIGS. 1 and 2. It is an enlarged view which shows the cross section of the connector shown in FIGS. It is the figure which showed the wiring pattern on the circuit board in which the connector of this embodiment is mounted. It is the figure which showed the contact pattern as a comparative example, and the wiring pattern on the circuit board in which the contact is mounted.

  Embodiments of the present invention will be described below.

  FIG. 1 is a perspective view of a connector as one embodiment of the present invention as viewed from the fitting surface side.

  FIG. 2 is a perspective view of the connector shown in FIG. 1 as viewed from the mounting surface side on the circuit board.

  The connector 10 shown in FIGS. 1 and 2 includes a housing 20, a plurality of contacts 30, and a reinforcing metal fitting 40.

  The housing 20 has a substantially rectangular shape in plan view. 1 has a base portion 21 extending in the longitudinal direction at the center thereof, and grooves 22 extending in the longitudinal direction are formed on both sides thereof. These two grooves 22 are connected to each other at the depressions 23 at both ends in the longitudinal direction.

  A plurality of contacts 30 are arranged in each of the two grooves 22. Details of the contact 30 will be described later.

  Further, reinforcing metal fittings 40 are provided at both longitudinal ends of the connector 10. The connector 10 is mounted on the circuit board with the mounting surface 12 shown in FIG. 2 facing the circuit board (not shown).

  On the mounting surface 12, terminal portions 30a of a plurality of contacts 30 (see FIG. 1) arranged in two rows appear. These terminal portions 30a are soldered to the circuit board. In addition, solder fixing portions 41 of the reinforcing metal fitting 40 appear at both ends in the longitudinal direction of the mounting surface 12. The solder fixing portion 41 of the reinforcing metal fitting 40 is also soldered to the circuit board together with the terminal portion 30a of the contact 30. The connector 10 is firmly fixed to the circuit board by soldering the reinforcing metal fitting 40.

  FIG. 3 is a side view of the connector shown in FIGS. 1 and 2.

  FIG. 4 is an enlarged view showing a cross section of the connector shown in FIGS. Here, FIGS. 4A and 4B represent cross sections along arrows AA and BB, respectively, shown in FIG.

  Here, the contact 30 of the connector 10 of the present embodiment will be described with reference to FIGS.

  A plurality of contacts 30 are arranged in a row in each of the two grooves 22 provided in the housing 20 shown in FIG. Here, the contact 30 of the connector 10 is provided with two different types of contacts, ie, a first contact 31 and a second contact 32. The plurality of contacts 30 arranged in each groove 22 is composed of first contacts 31 and second contacts 32 arranged alternately. Here, the plurality of contacts 30 in the first row arranged in one groove 22 and the plurality of contacts 30 in the second row arranged in the other groove 22 are compared. Then, in the first row and the second row, the first contacts 31 and the second contacts 32 are arranged at positions shifted in phase in the arrangement direction of each row (longitudinal direction of the groove 22). Specifically, in the case of the connector 10 of the present embodiment, the phase is arranged at a position different by 180 °. That is, the first contact 31 and the second contact 32 are provided side by side between the first row and the second row.

  Here, the first contact 31 has a first terminal portion 31a of a type soldered to the surface of the circuit board. As shown in FIGS. 2 and 4, the first terminal portion 31 a has a shape extending sideways along the surface of the circuit board. On the other hand, the second contact 32 has a second terminal portion 32a of a type that is inserted into a through hole of the circuit board and soldered. As shown in FIGS. 2 and 4, the second terminal portion 32 a has a pin shape protruding from the mounting surface 12 of the connector 10.

  Further, as shown in FIGS. 3 and 4, the first terminal portion 31a and the second terminal portion 32a are provided at different positions in the lateral direction intersecting the arrangement direction for each of the first row and the second row. It has been. Specifically, in the case of the connector 10 of the present embodiment, the first terminal portion 31 a is provided at a position outside the width direction of the connector 10, and the second terminal portion 32 a is near the center in the width direction of the connector 10. It is provided in the position.

  FIG. 5 is a diagram showing a wiring pattern on a circuit board on which the connector of this embodiment is mounted.

  Here, FIG. 5A is a cross-sectional view of the connector 10 mounted on the circuit board 50 for showing the positional relationship between the terminal portions of the contacts and the wiring patterns on the circuit board. FIG. 5A shows a cross section taken along the arrow AA in FIG. 3 as the cross section of the connector 10 as in FIG. 4A.

  5B and 5C are a plan view and a back view, respectively, of the circuit board. However, here, for simplicity of illustration, the contacts 30 arranged in two rows are illustrated as four contacts 30 arranged in each row. Here, the connector 10 is mounted on the right end of the circuit board 50. The circuit board 50 may be a rigid circuit board or an FPC.

  In the cross-sectional view of the connector 10 in FIG. 5A, the first contact 31 and the first terminal portion 31a are shown on the right side. The second contact 32 and the second terminal 32a are shown on the left side. However, as described above, the first contact 31 (first terminal portion 31a) and the second contact 32 (second terminal portion 32a) are alternately arranged for each column in the arrangement direction perpendicular to the paper surface of FIG. It is arranged. Further, in the lateral direction intersecting with the arrangement direction, that is, in the left-right direction in FIG. 5A, the first contact 31 (first terminal portion 31a) and the second contact 32 (second terminal portion 32a) are arranged side by side. In the position. Furthermore, in each row, the first terminal portion 31a and the second terminal portion 32a are provided at different positions in the width direction (left-right direction in FIG. 5A) intersecting with the arrangement direction.

  Correspondingly, the wiring pattern on the surface of the circuit board 50 is the pattern shown in FIG. That is, the pads 511 for the first terminal portions 31a of the first contacts 31 in the first row are arranged on the left side. The first terminal portions 31a of the first contacts 31 in the first row are soldered to the left pads 511, respectively. A land 521 for the second terminal portion 32a of the second contact 32 in the first row is formed on the right side of the row of pads 511 on the left side. In the center of these lands 521, a through hole 531 penetrating the front surface (FIG. 5B) and the back surface (FIG. 5D) of the circuit board 50 is formed. The second terminal portion 32a of the second contact 32 in the first row is soldered to the land 521 (and the land 541 on the back surface of the circuit board 50 shown in FIG. 5D) while being inserted into the through hole 531. Is done.

  Here, the first row of pads 511 arranged on the left side and the first row of lands 521 arranged on the right side of the pads 511 are at positions that are 180 ° out of phase with each other in the arrangement direction (vertical direction in FIG. 5B). Is provided. This corresponds to the fact that the first contacts 31 (first terminal portions 31a) and the second contacts 32 (second terminal portions 32a) are alternately arranged in the first row.

  The same applies to the second row on the right side of FIG. 5, but the left and right are reversed and the phase is 180 ° different in the arrangement direction from the first row as compared with the pads 511 and lands 521 in the first row. That is, the row of pads 511 for the first terminal portions 31a of the first contacts 31 in the second row is provided on the rightmost side in FIG. The first terminal portions 31a of the first contacts 31 in the second row are soldered to the right pads 511, respectively. In addition, a row of lands 521 for the second row is provided to the left of the row of pads 511 and to the right of the row of lands 521 for the first row. A through hole 531 penetrating the front surface (FIG. 5B) and the back surface (FIG. 5C) of the circuit board 50 is also formed at the center of each land 521 for the second row. The second terminal portion 32a of the second contact 32 in the second row is inserted into the central through hole 531 of the land 521 in this row, and the land 521 around the through hole 531 (and FIG. And soldered to the surface land 541) of the circuit board 50 shown in FIG.

  Here, the pad 511 for the first row and the land 521 for the second row are provided side by side, that is, at the same position in the arrangement direction. Similarly, the land 521 for the first row and the pad 511 for the second row are provided side by side, that is, at the same position in the arrangement direction.

  As shown in FIG. 5A, in the two-row arrangement of the contacts 30, the first contact 31 in one row and the second contact 32 in the other row are provided side by side. It corresponds to.

  From the left pad 511, the wiring 53 extends linearly in the left direction as it is. On the other hand, the wiring 53 extending from the right pad 511 bypasses the first row land 521 and linearly extends to the left through the wiring 53 extending from the left pad 511 after detouring.

  The wiring extending from the land 521 is not formed on the surface of the circuit board 50 shown in FIG.

  The through-hole 531 shown in FIG. 5B appears as it is on the back surface of the circuit board 50 shown in FIG. A land 541 is provided around each through hole 531 on the back surface of the circuit board 50 shown in FIG. Each wiring 54 extends linearly from each land 541 to the left side. Only the wiring 54 connected to the second contact 32 exists on the back surface of the circuit board 50, and there is no pad or wiring for the first contact 31.

  FIG. 6 is a diagram showing a contact as a comparative example and a wiring pattern on the circuit board on which the contact is mounted.

  FIG. 6A is a cross-sectional view of a connector 10 ′ as a comparative example. FIG. 6B is a diagram showing a wiring pattern on the surface of the circuit board 50 ′ on which the connector as a comparative example shown in FIG. 6A is mounted. Further, FIG. 6C shows a wiring pattern on the back surface of the circuit board 50 '.

  Here, in the connector 10 ′ shown in FIG. 5A, the arrangement pitch and lateral width of the contacts 30 (the horizontal dimension in FIG. 5A) are the same as those of the connector 10 of the embodiment shown in FIGS. Are the same. That is, the projected area of the connector 10 ′ of this comparative example onto the circuit board is the same as the connector 10 of the embodiment.

  A connector 10 ′ as a comparative example shown in FIG. 6A has a plurality of contacts 30 arranged in two rows, like the connector 10 of the embodiment shown in FIGS. 1 to 5. The contacts 30 arranged there all correspond to the first contact according to the present invention, and are contacts having surface-mount type terminal portions. However, in the contacts 30 arranged in each row, there are two types of contacts in which the positions of the terminal portions soldered to the circuit board are different from each other in the width direction (left-right direction in FIG. 5) intersecting with the arrangement direction. In each row, these two types of contacts are alternately arranged in the arrangement direction. For this reason, as shown in FIG. 5B, the pads 511 for the first row of the two rows are staggered in the arrangement direction (vertical direction in FIG. 5B) on the surface of the circuit board 50 ′. It is arranged. Similarly, the pads 511 for the second row of the two rows are arranged in a staggered manner in the arrangement direction. The terminals 31 of the contacts 30 of the connector 10 'are soldered to these pads.

  A wiring 54 extends linearly on the left side from the pad 511 for the first row on the left side. A short wiring 55 extends toward the right side from the pad 511 for the second row on the right side, and circular lands 551 are arranged in a staggered manner at the end thereof. In the center of each land 551, a via 552 extending to the front and back surfaces of the circuit board 50 'is formed. On the back surface of the circuit board 50 ′, lands 553 are formed around the vias 552 extending to the back surface. A wiring 54 extends to the left side from the land 553 on the back surface of the circuit board 50 ′. The contacts 30 in the second row are solder-connected to the staggered pad 551 on the right side of the surface of the circuit board 50 ′, and are conducted to the back surface side via the wiring 55 and further via the via 552, It is connected to the wiring 54.

  As is clear from comparison between FIG. 5 and FIG. 6, even if the projected areas of the connectors 10 and 10 ′ onto the circuit boards 50 and 50 ′ are the same as each other, they are necessary for soldering, routing of wiring, and the like. The mounting area when considering this area is smaller in the connector 10 of this embodiment shown in FIG. Further, the pad 511 responsible for soldering the surface mount contact to the surface of the circuit board can secure a larger area in the connector 10 of this embodiment shown in FIG. It has improved.

10, 10 'Connector 11 Fitting surface 12 Mounting surface 20 Housing 21 Base portion 22 Groove 23 Recessed portion 30 Contact 30a Terminal portion 31 First contact 31a First terminal portion 32 Second contact 32a Second terminal portion 40 Reinforcing bracket 41 Solder Fixed part 50, 50 'Circuit board 53, 54, 55 Wiring 511 Pad 521, 541, 553 Land 531 Through hole 552 Via

Claims (3)

A housing;
A plurality of contacts arranged in two rows in the arrangement direction and fixed to the housing;
The plurality of contacts are inserted into through-holes of the first contact having a first terminal portion soldered to the surface of the circuit board and soldered to the circuit board for each row, and are second soldered to the circuit board. Second contacts having terminal portions are alternately arranged, and in the first row and the second row of the two rows, the first contacts and the second contacts are phased in the arrangement direction. The connector is arranged at a position shifted from each other.   2. The connector according to claim 1, wherein the first terminal portion and the second terminal portion are provided at positions different from each other in the lateral direction intersecting the arrangement direction for each row.   3. The connector according to claim 1, wherein the first terminal portion and the second terminal portion are provided side by side in the arrangement direction between the two rows.

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