JP2005116230A - Connector for substrate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To realize downsizing of a connector for a substrate. <P>SOLUTION: A terminal 40 is constituted of two kinds of long and short ones, in which the long terminal 40A penetrats through a housing 40 at a higher position than the short terminal 40B, a bending part 42 of the long terminal 40A is positioned rearward than the bending part 42 of the short terminal 40B, and the short terminal 40B is positioned inside the bending of the long terminal 40A so that the inside and the outside of the bendings are mutually placed side by side. A contact point 44B of the short terminal 40B is so formed as to have an extended end of a leg part 43 bent inward toward the housing 11 side to enter into a recessed part 17. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a board connector connected to a printed board.

Conventionally, this type of board connector has a large number of terminals mounted in the housing. Each terminal is connected to a mating terminal and protrudes from the rear end surface of the housing, and the rear end of the horizontal portion. A drooping portion bent at a right angle from the bottom to the printed circuit board side, and a contact portion bent backward from the lower end of the drooping portion and soldered to the circuit pattern of the printed circuit board. Each terminal is provided with two types of long and short terminals. Among these terminals, the long terminal is arranged on the upper stage of the housing, while the short terminal is arranged on the lower stage of the housing. The bent portion of the long terminal is positioned behind the bent portion of the short terminal, and the short terminal is positioned inside the bent of the long terminal.
JP 7-153508 A

In the above case, since the contact portion of each terminal is extended backward, the longer terminal of the two types of long and short terminals avoids interference with the contact portion of the shorter terminal. Therefore, it is necessary to provide the bent part considerably at the rear position, and the depth dimension tends to increase as the whole connector. Therefore, it has been difficult to meet the recent demand for connector miniaturization.
The present invention has been completed based on the above circumstances, and an object thereof is to reduce the size of a board connector.

  As means for achieving the above-mentioned object, the invention of claim 1 comprises a housing and a plurality of terminals that are mounted through the mounting portion of the housing, and each terminal is connected to a counterpart terminal. And a connecting portion led out to the outside from the rear end surface of the housing, and a leg connected to the leading end of the connecting portion via a bent portion and connected to a conductor portion of the printed board. Each terminal is composed of a plurality of types having different lengths, and when comparing two types of long and short types, the longer terminal is positioned higher than the shorter terminal. And the bent portion of the longer terminal is positioned behind the bent portion of the shorter terminal, and the bent portion of the longer terminal is Board connector in which the shorter terminal is positioned on the inside so that the inner side and the outer side of the bend are aligned with each other, and at least the shortest terminal among the plurality of types of terminals, It is characterized in that a contact point with respect to the conductor part is formed by bending the extending end of the leg part toward the housing side.

  According to a second aspect of the present invention, in the first aspect of the present invention, a concave portion is provided in the rear end surface of the housing, and the contact that is bent toward the housing side enters the concave portion. However, it has characteristics.

  The invention of claim 3 includes a housing and a plurality of terminals that are mounted to penetrate the mounting portion of the housing, and each terminal is connected to a counterpart terminal and led out from the rear end surface of the housing. A connector for a board composed of a connecting part and a leg part extending to the printed circuit board side connected to the lead-out end of the connecting part via a bent part and connected to a conductor part of the printed circuit board, The bent portion of each terminal is characterized in that it is configured to be in contact with the mouth edge of the mounting portion on the rear end surface of the housing.

  According to a fourth aspect of the present invention, in the third aspect of the present invention, the rear end surface of the housing is provided with a bent portion bent inward, and the bent portion of each terminal is provided in the bent portion. It is characterized in that is arranged.

  According to a fifth aspect of the present invention, the leg of each terminal is formed by being bent toward the printed circuit board after being mounted on the mounting portion. The lip of the mounting portion on the rear end surface of the housing is characterized in that it is a bending fulcrum when the leg portion is molded.

  According to a sixth aspect of the present invention, in the fifth aspect of the present invention, the lower surface side of each terminal in the bending direction of the rim of the mounting portion on the rear end surface of the housing is inclined downward. However, it has characteristics.

<Invention of Claim 1>
In order to avoid interference with the contact part, the shortest terminal among the multiple types of terminals forms the contact part for the conductor part by bending the extending end of the leg part toward the housing. Therefore, it is not necessary to provide a bent portion of the long terminal located outside the bend at a rear position away from the housing. As a result, the depth dimension of the board connector can be reduced.

<Invention of Claim 2>
Since the contact bent toward the housing enters the recess, a space for the contact can be secured without increasing the depth of the board connector.

<Invention of Claim 3>
Since the bent portion of each terminal is in contact with the lip of the mounting portion on the rear end surface of the housing, the depth dimension of the board connector can be reduced because it is not provided at the rear position away from the housing.

<Invention of Claim 4>
Since the bent portion is arranged in the bent portion, a space for the bent portion can be secured without increasing the depth dimension of the board connector.

<Invention of Claim 5>
Since the lip of the mounting portion on the rear end surface of the housing serves as a bending fulcrum when the leg portion is molded, the workability when bending is excellent.

<Invention of Claim 6>
Since the lower end side of each terminal in the bending direction of the rim of the mounting portion on the rear end surface of the housing is formed to be inclined downward, each terminal may be bent excessively from the normal installation position during bending. Permissible. As a result, the leg portion of each terminal can reach the proper arrangement position by the subsequent spring back.

<Embodiment 1>
A first embodiment of the present invention will be described with reference to FIGS. The board connector 10 according to the present embodiment is an example including a terminal 40 that is surface-mounted on a printed board 30. Hereinafter, the front-rear direction will be described with the right side of FIG.

The board connector 10 protrudes from the housing 11, a plurality of terminals 40 accommodated and held in the housing 11, and both ends of the bottom surface of the housing 11, and a fixing part 13 for fixing the housing 11 to the printed board 30. With.
The housing 11 is formed into a horizontally long box shape from a synthetic resin material, and a fitting recess 11A into which the female housing 21 of the mating female connector 20 can be fitted is formed on the front surface thereof.

  As shown in FIG. 2, a lock piece 14 is provided at the center of the upper surface of the housing 11. The lock piece 14 is elastically deflectable between the two notches 12 when a pair of notches 12 are inserted from the front edge. Yes. A lock hole 14 </ b> A having a rectangular shape in plan view is provided through substantially the center of the lock piece 14. As shown in FIG. 4, the locking piece 14 rides on a locking projection 22 provided on the mating female housing 21 while being bent upward and deformed in a process in which both male and female connectors 10 and 20 are fitted. When the male and female connectors 10 and 20 reach the proper mating state, as shown in FIG. 5, the lock projections 22 are fitted into the lock holes 14A so that the connectors 10 and 20 are not detached from each other. It has become a structure. Further, as shown in FIG. 1, the lower end portion of the lock piece 14 is formed so as to protrude wider than the upper portion thereof, and when the lock piece 14 is excessively bent, it is protruded inward from the inner surface of each notch 12. Further, the bending movement of the lock piece 14 is suppressed by abutting against the excessive bending prevention piece 15.

  Here, if the lock piece 14 is provided so as to protrude from the upper surface of the female housing 21 on the other side, it is necessary to form a bending space on the upper surface of the female housing 21 to allow the lock piece 14 to bend. is there. Then, the fitting recess 11A of the housing 11 is formed to a size that can receive the female housing 21 that has been increased in height due to the formation of the bending space and the lock piece 14, so that the height dimension increases. It will not be possible to meet the demand for connector height reduction. For this reason, in this embodiment, the lock piece 14 is provided on the housing 21 side so as to meet the demand for connector height reduction, and the lock piece 14 is exposed to the outside so that both connectors 10 and 20 are manually operated. It is possible to perform the detachment operation.

  In addition, as shown in FIG. 3, the housing 11 is formed with a mounting portion 16 that can hold a connection portion 41 (described later) of each terminal 40 in a horizontal posture in two upper and lower stages. The mounting portion 16 is formed on the rear wall of the housing 11 that is formed thicker than the upper wall and the lower wall in order to secure a press-fitting allowance for each terminal 40. The rim of the mounting portion 16 on the rear end surface of the housing 11 is a guide surface 11T that opens in a trumpet shape, and guides the tip of each terminal 40 when each terminal 40 is mounted.

  The terminal 40 to be press-fitted into the mounting portion 16 of the housing 11 is formed by bending a conductive wire, and there are two types of terminals, each having a different length and a different protruding length from the housing 11. They are provided at a constant pitch in the left-right direction. Each terminal 40 is connected to a mating terminal (not shown) and led out substantially horizontally from the rear end surface of the housing 11 to the outside, and a bent portion 42 is provided at the rear end of the connection portion 41. And leg portions 43 extending downward. The longer terminal 40A of the two types of terminals 40A and 40B is penetrating the housing 11 at a position higher than the shorter terminal 40, and the position of the bent portion 42 of the long terminal 40A is: It is located behind the bent portion 42 of the short terminal 40B (on the side far from the housing 11). The two types of long and short terminals 40A and 40B bent into an L-shape are such that the short terminal 40B is positioned inside the long terminal 40A, and therefore, when viewed from the rear, The short terminal 40B located at the back is hidden behind the long terminal 40A located outside the bend. That is, when viewed from behind, the two types of terminals 40A and 40B are arranged so as to overlap on the same straight line.

  Of the two types of terminals 40A and 40B, the short terminal 40B located on the inner side is bent with respect to the conductor portion (circuit pattern) of the printed circuit board 30 by bending the tip portion of the leg portion 43 toward the housing 11 side. A contact 44B is formed. And the recessed part 17 for letting out the contact 44B bent in the said aspect in the rear-end surface of the housing 11 is provided. The concave portion 17 is located below the mounting portion 16 penetrating and holding the short terminal 40B in the housing 11 and is provided open to the printed circuit board 30 side, and a contact 44B enters inside thereof. Therefore, when viewed from above (when viewed in the assembly direction of the board connector 10 with respect to the printed circuit board 30), the contact 44 </ b> B enters the recess 17 and is hidden behind the mounting portion 16 of the housing 11. It is like that. In addition, the long terminal 40A located on the outer side of the two types of terminals 40A and 40B has a contact point with respect to the printed circuit board 30 by bending the tip end portion of the leg portion 43 away from the housing 11 side. 44A is formed.

  Next, the operation of this embodiment will be described. First, each terminal 40 is press-fitted into the mounting portion 16 of the housing 11 from behind. At this time, each terminal 40 may be bent into an L shape in advance, but may be bent into an L shape after press-fitting. Subsequently, the housing 11 is placed at a predetermined position of the printed board 30, and the fixing portion 13 is inserted into the positioning hole 31 of the printed board 30. Then, the contact points 44A and 44B of the two types of terminals 40A and 40B are electrically in contact with the corresponding conductor portions along the upper surface of the printed circuit board 30. Thereafter, soldering is performed between the printed circuit board 30 and each of the contacts 44A and 44B to ensure the connection between the two.

  According to the board connector 10 of the present embodiment, the contact 44B of the short terminal 40B with respect to the printed circuit board 30 is formed inwardly bent toward the housing 11, so that interference with the contact 44B can be avoided. It is not necessary to provide the bent portion 42 of the long terminal 40A at the rear position. As a result, the depth dimension of the board connector 10 can be reduced.

  Further, since the contact 44B of the short terminal 40B enters the recess 17, a space for the contact 44B can be ensured without increasing the depth dimension of the board connector 10, Accordingly, the depth dimension of the board connector 10 can be further reduced. Furthermore, since the recessed part 17 is provided in the rear-end surface of the housing 11, the soldering state between the contact 44B of the short terminal 40B and the printed circuit board 30 can be easily visually recognized from the back.

<Embodiment 2>
6 and 7 show Embodiment 2 of the present invention. In the second embodiment, each terminal 40 is press-fitted into the housing 11 and then bent toward the printed circuit board 30 to form each leg portion 43. At this time, the lip of the mounting portion 16 on the rear end surface of the housing 11 is formed. It is different from the first embodiment in that it is used as a bending fulcrum.

  That is, in the second embodiment, the bent portion 42 is in contact with the mouth edge of the mounting portion 16 on the rear end surface of the housing 11 as shown in FIG. On the lower surface side of the rim of the mounting portion 16 on the rear end surface of the housing 11 (the lower surface side in the bending direction of each terminal 40), a slope portion 18 that slopes downward is formed by a notch. The terminals 40 are allowed to bend until they abut. Further, the upper mounting portion 16 to which the longer terminal 40A is mounted has a receiving portion that protrudes to the rear of the housing 11 so that the connecting portion 41 of the terminal 40A can be supported from below until reaching the bent portion 42. A portion 19 is formed. Furthermore, the receiving portion 19 includes a second inclined surface portion 18A that is continuous with the inclined surface portion 18 and is inclined downward with a larger gradient than the inclined surface portion 18, and the jig is guided along the second inclined surface portion 18A during bending. (It will be described later).

  In order to mount each terminal 40 on the mounting portion 16 of the housing 11, first, as shown in FIG. 7A, a short terminal 40B corresponding to the lower mounting portion 16 is press-fitted, and in this state, from the rear. The jig G is slid along the second slope portion 18A. Subsequently, as shown in FIG. 7B, the jig G is rotated toward the printed circuit board 30 with the lip of the mounting portion 16 on the rear end surface of the housing 11 as a bending fulcrum, and the leg portion 43 becomes the slope portion 18. The short terminal 40B is bent and deformed until it comes into contact. Thereafter, when the engagement of the jig G is released, as shown in FIG. 7C, the leg portion 43 of the terminal 40 is brought into the normal arrangement position by the spring back and is maintained in the substantially vertical posture. In this case, the slope of the slope portion 18 is set corresponding to the amount of springback of the terminal 40.

  According to the second embodiment, the bent portion 42 of each terminal 40 is not provided at the rear position away from the housing 11 because the bent portion 42 is in contact with the edge of the mounting portion 16 on the rear end surface of the housing 11. Therefore, the depth dimension of the board connector 10 can be reduced. Further, since the lip of the mounting portion 16 on the rear end surface of the housing 11 serves as a bending fulcrum when the leg portion 43 is formed, the workability when bending is excellent. Furthermore, since the slope part 18 which inclines downward is formed in the lower surface side of the edge of the mounting part 16 in the rear-end surface of the housing 11, each terminal 40 is bent more than a regular arrangement | positioning position at the time of a bending process. As a result, the leg portion 43 of each terminal 40 can be brought into the proper arrangement position by the subsequent spring back. Further, since the contacts 44A and 44B of each terminal 40 are extended toward the opposite side of the housing 11, the soldering state between the contacts 44A and 44B and the printed circuit board 30 can be easily visually recognized from the rear. .

<Embodiment 3>
8 and 9 show Embodiment 3 of the present invention. As shown in FIG. 8, the third embodiment differs from the second embodiment in that the terminal 40 is bent in an L shape in advance and the bent terminal 40 is press-fitted into the mounting portion 16 of the housing 11 from the rear. ing. However, the third embodiment is also in a state where the bent portion 42 is in contact with the lip of the mounting portion 16 on the rear end surface of the housing 11 as shown in FIG. .

  That is, in the third embodiment, the lower surface side of the lip of the mounting portion 16 on the rear end surface of the housing 11 is formed along the leg portion 43 of each terminal 40 and stands substantially in the vertical direction. Also, the lower region of the rear end surface of the housing 11 including the lip of the mounting portion 16 is a bent portion 60 that is greatly bent inward, and the bent portions 42 of the terminals 40 are arranged on the inner side thereof. It has become. Therefore, when viewed from above (when viewed in the direction of assembly of the board connector 10 with respect to the printed circuit board 30), the bent portions 42 of the terminals 40 are disposed in the bent portions 60, so that the housing 11 is hidden behind the mounting portion 16.

  According to the third embodiment, since the leg portion 43 of each terminal 40 is arranged along the rear end surface of the housing 11, the depth dimension of the board connector 10 can be reduced, and the bent portion of each terminal 40 can be reduced. Since 42 is arranged in the bent portion 60, a space for the bent portion 42 can be secured without increasing the depth dimension of the board connector 10. Further, since the contacts 44A and 44B of each terminal 40 are extended toward the opposite side of the housing 11, the soldering state between the contacts 44A and 44B and the printed circuit board 30 can be easily visually recognized from the rear. .

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention, and further, within the scope not departing from the gist of the invention other than the following. Various modifications can be made.

  (1) In the second and third embodiments, an example in which a surface mounting type terminal is provided has been described. However, in the present invention, a terminal that penetrates to the lower surface side of the printed board may be provided.

  (2) In the first embodiment, the two types of long and short terminals are divided and arranged in two upper and lower stages of the housing. However, in the present invention, three or more types of terminals having different lengths have multiple housings. It may be arranged separately. However, when comparing the two types of long and short terminals, the longer terminal penetrates the housing at a higher position than the shorter terminal, and the bent part of the longer terminal is that of the shorter terminal. It is required that the short terminal is located behind the bend and the short terminal is located inside the long terminal so that the inside and outside of the bend are aligned with each other. .

(3) In the first embodiment, the contact of the long terminal extends in the direction away from the housing. However, in the present invention, the contact of the long terminal extends toward the housing as well as the contact of the short terminal. It is good to have been issued.
(4) In the first embodiment, the concave portion is provided, and in the third embodiment, the bent portion is provided. However, in the present invention, the concave portion and the bent portion may not be provided.

The front view of the connector for substrates concerning Embodiment 1 of the present invention. Plan view Cross section before mating with mating connector Sectional view in the middle of mating with the mating connector Cross-sectional view of the mating connector with the mating connector Sectional drawing of the board | substrate connector which concerns on Embodiment 2. FIG. (A) Cross section before bending terminal (B) Cross section during bending terminal (C) Cross section after bending terminal Sectional drawing before the terminal mounting of the board | substrate connector which concerns on Embodiment 3. FIG. Sectional view after terminal installation

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Board connector 11 ... Housing 16 ... Mounting part 17 ... Recess 40 ... Terminal 40A ... Long terminal 40B ... Short terminal 41 ... Connection part 42 ... Bending part 43 ... Leg part 44B ... Contact

Claims (6)

A housing, and a plurality of terminals that are inserted through the mounting portion of the housing, each terminal being connected to a counterpart terminal and connected to the outside from the rear end surface of the housing; It consists of leg portions that are connected to the lead-out end of the connecting portion via a bent portion and extend to the printed circuit board side and connected to the conductor portion of the printed circuit board, and each terminal has a different length. The long terminal penetrates the housing at a higher position than the short terminal when the long and short two types are relatively compared, and the bent portion of the long terminal is The bending of the shorter terminal is located behind the bent portion of the shorter terminal, and the shorter terminal is positioned inside the bending of the longer terminal. A board connector which is adapted to each other are arranged in the side and outside,
The board having at least the shortest length among the plurality of types of terminals forms a contact point with respect to the conductor portion by bending an extended end of the leg portion toward the housing. Connector. 2. The board connector according to claim 1, wherein a concave portion is provided in a rear end surface of the housing, and the contact bent to the housing side enters the concave portion. A housing, and a plurality of terminals that are inserted through the mounting portion of the housing, each terminal being connected to a counterpart terminal and connected to the outside from the rear end surface of the housing; A connector for a board comprising a leg part that extends to the printed circuit board side connected to the lead-out end of the connection part via a bent part and is connected to a conductor part of the printed circuit board,
The board connector according to claim 1, wherein a bent portion of each terminal is in contact with a mouth edge of the mounting portion on a rear end surface of the housing. 4. The rear end surface of the housing is provided with a bent portion bent inward, and the bent portion of each terminal is arranged in the bent portion. Board connector. The leg portion of each terminal is formed by bending to the printed circuit board side after being attached to the attachment portion,
The board connector according to claim 3 or 4, wherein an edge of the mounting portion on a rear end surface of the housing serves as a bending fulcrum when the leg portion is formed. The board connector according to claim 5, wherein a lower surface side of each terminal in a bending direction of the mouth of the mounting portion on the rear end surface of the housing is formed to be inclined downward.

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