JP2010170790A - Connector for printed circuit board - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connector of a structure in which each of circuits of different printed circuit boards can be connected without using solder and moreover manufacturing and assembling operations can be simplified. <P>SOLUTION: The connector is composed of a housing hole 41 of which both ends are arranged open and into which a first conductive terminal 1 and a second conductive terminal 2 are inserted from open ports on the opposite side respectively, and a resin-made housing 4 in which an elastic member 3 biasing the first conductive terminal and the second conductive terminal in an protruding direction from the open port can be accommodated, and the first conductive terminal and the second conductive terminal includes contacting parts 11, 21 arranged projected from each of the open ports and engagement parts 14, 24 extensively engaged in an inserting direction arranged on the end, and the housing includes a fixing member 45 for fixing the housing to two printed wiring boards 51, 52, in which there is formed a conductor pattern with which the contacting parts of the first conductor terminal and the second conductor terminal are electrically connected. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a printed wiring board connector, and more particularly to a printed wiring board connector that connects circuits formed on different printed wiring boards.

  Various printed wiring board connectors have been proposed. Generally, as proposed in Patent Document 1, a printed wiring board is connected to a male or female terminal for a connector connected to an external circuit. Conductor terminals formed by connecting pin-shaped terminals for connection to the housing are embedded in a plurality of rows or press-fitted into a synthetic resin housing or the like. The pin-like terminal of the printed wiring board connector formed in this way is inserted into a through hole provided in the external connection terminal (land) of the conductor pattern of the printed wiring board, and the tip and land of the pin-like terminal are connected to each other. It is used by being electrically connected with solder.

  Further, in Patent Document 2, as a connector for connecting a printed wiring board and an external electric element, a plurality of cylindrical conductor terminals are embedded in a synthetic resin housing, and a pin-shaped terminal is provided at the tip of the cylindrical conductor terminal. Has been proposed that urges the pin-shaped terminal to protrude from the housing by a spring member mounted in a cylindrical conductor terminal. According to this, the base end of the cylindrical conductor terminal is exposed from the opposite surface of the housing and fixed to the land of the printed wiring board with solder, and the pin-shaped terminal is brought into contact with the external electric element to be electrically connected. To use.

  However, any of the above printed wiring board connectors is connected to the printed wiring board using solder that adversely affects the environment. Therefore, a printed wiring board connector that does not use solder is desired. .

  As an example of a printed wiring board connector that does not use solder, those described in Patent Documents 3 and 4 are known. These printed wiring board connectors connect the lands of the printed wiring board connected to the test apparatus and the terminals of the IC package in order to test an IC package or the like that is a semiconductor device. According to these, a plurality of cylindrical conductor terminals are accommodated in parallel in a synthetic resin housing, and a pair of contact terminals with spring members interposed between both ends of each conductor terminal is mounted. Then, the pair of contact terminals of the connector is used to make electrical connection by contacting the land of the printed wiring board and the terminal of the IC package with a spring member. In addition to these, as printed circuit board connectors that do not use solder, the techniques described in Patent Documents 5 and 6 are known.

  According to the printed wiring board connector described in Patent Literatures 2 to 6, since the contact terminal is electrically connected to the land of the printed wiring board by the elastic force of the spring member, solder is not used. Therefore, adverse effects on the environment can be reduced.

JP 2002-216870 A JP 2003-229194 A JP 2002-246132 A JP 2004-325305 A JP 2007-48576 A JP 2006-98254 A

  However, all conventional contact pressure type printed wiring board connectors have a pair of contact terminals slidably mounted on both ends of a cylindrical conductor terminal, and a spring member is interposed between the pair of contact terminals. Since a part of the tip of the contact terminal protrudes from the housing, there is a problem that the manufacturing or assembly work becomes complicated. In other words, in order to prevent the contact terminal from protruding and falling off, for example, a large diameter portion is provided at the base of the contact terminal, a restriction is formed at both ends of the cylindrical conductor terminal, or a protrusion is formed on the inner surface to It is necessary not to drop out. Such a diaphragm and inner protrusion must be formed in a state where the spring member is compressed, so that the manufacturing or assembling work becomes complicated.

  The problem to be solved by the present invention is to realize a connector that can connect circuits of different printed wiring boards without using solder and can simplify the manufacturing or assembling work.

  The present invention that solves the above-described problems includes a receiving hole that is provided with both ends open, and the first conductor terminal and the second conductor terminal are inserted from the openings on opposite sides, the first conductor terminal, It comprises a resin housing to which an elastic member that urges the second conductor terminal in a direction protruding from each of the openings can be mounted, and the first conductor terminal and the second conductor terminal are respectively A contact portion that protrudes from the opening and an engaging portion that engages with each other in an insertion direction by elastic deformation are formed at an end portion that is inserted into the receiving hole, and the housing is configured to engage the housing with the first member. It is characterized by comprising a fixing member for fixing to two printed wiring boards on which a conductor pattern for electrically connecting the contact portions of one conductor terminal and the second conductor terminal is formed.

  According to this, by attaching the elastic member to the housing and inserting the first and second conductor terminals into the receiving holes from opposite directions to each other, the end portions can be engaged by elastic deformation of the first or second conductor terminals. The joint portions engage with each other, and the maximum distance between the contact portions of the first and second conductor terminals is regulated. Further, since the engaging portions are engaged with each other so as to be extendable and contractible in the insertion direction, a connector is formed in which the distance between the contact portions of the first and second conductor terminals can be extended and contracted. Therefore, a printed wiring board connector for connecting different printed wiring boards can be realized by simple production or assembly work.

  Further, specifically, there is a printed wiring board connector for connecting different printed wiring boards, a contact portion, a pair of elastic support members extending in parallel from both ends of the contact portion, and the pair of A first conductor terminal having a pair of locking projections formed in opposite directions at the tip of the support member; a contact portion; and a pair of support members extending in parallel from both ends of the contact portion; A second conductor terminal in which a slit for engaging a locking projection of the first conductor terminal is formed at the tip of the pair of support members; and both ends of the first conductor terminal are open from both ends. A pair of receiving holes into which the pair of support portions are inserted, and a pair of receiving holes into which the pair of support portions of the second conductor terminal are respectively inserted from the other end, and the first conductor terminals are provided with both ends opened. Of the contact portion and the second conductor terminal Resin made of resin having a through hole that is interposed between the point portions and is mounted with an elastic member that urges the first conductor terminal and the second conductor terminal in a direction protruding from the accommodation hole, respectively. The housing includes a housing, and a fixing member that fixes the housing to two printed wiring boards on which a conductor pattern for electrically connecting the first conductor terminal and the second conductor terminal is formed. It can be prepared.

  According to this, the elastic member is attached to the through hole formed in the housing, and the pair of support members of the first and second conductor terminals are simply inserted into the pair of receiving holes from the opposite directions, so that the first or Due to the elastic deformation of the pair of support members of the second conductor terminal, the locking projection of the first conductor terminal engages with the slit of the second conductor terminal, and the contact portion of the first and second conductor terminals A connector is formed in which the maximum interval is restricted and the interval between the contact portions of the first and second conductor terminals can be expanded and contracted according to the slit width of the slit of the second conductor terminal. Therefore, a printed wiring board connector for connecting different printed wiring boards can be realized by simple production or assembly work.

  Further, by pressing the contact portions of the first and second conductor terminals against the conductor patterns of the printed wiring boards to be connected to each other, and fixing the housing to the respective printed wiring boards by the fixing member, the elasticity of the elastic member Each contact portion is brought into contact with the conductor pattern of the printed wiring board by the force. Thereby, different printed wiring boards can be electrically connected without using solder.

  In the present invention, the first conductor terminal has an elastic portion formed by bending and bending the distal ends of a pair of support members made of a plate member, and the pair of folding ends of the elastic portion are bent in opposite directions. The second conductor terminal has a cylindrical portion into which the folded portion of the elastic portion of the first conductor terminal can be inserted at the distal end portions of the pair of support members. A configuration in which a slit is formed in the portion can be employed. According to this, the engagement strength between the first and second conductor terminals can be increased.

  In the present invention, the fixing member may employ a configuration that engages with an engaged portion formed on the printed wiring board by elastic deformation. According to this, the printed wiring board connector can be easily attached to and detached from the printed wiring board.

  In this case, the engaged portion is a through-hole formed in the printed wiring board, and the fixing member is formed of a columnar base formed to protrude from the housing so as to face the printed wiring board, and from the base And a conical locking head having a large-diameter bottom, and at least a part of the locking head and the base is divided into a plurality of portions in the circumferential direction by a slit. According to this, since the printed wiring board connector can be easily attached to and detached from the printed wiring board and can be stably fixed, the reliability can be improved.

  Further, in the present invention, the contact portion of the first and second conductor terminals is a flat plate shape, and a configuration in which a protrusion that contacts the conductor pattern of the printed wiring board is formed on the flat contact portion is adopted. be able to.

  According to the present invention, it is possible to realize a connector having a structure in which circuits of different printed wiring boards can be connected without using solder and manufacturing or assembling work can be simplified.

It is principal part sectional drawing of the connector for printed wiring boards of Embodiment 1 of this invention. 2 is an exploded perspective view of the printed wiring board connector according to Embodiment 1. FIG. 1 is an overall perspective view of a printed wiring board connector according to Embodiment 1. FIG. FIG. 3 is an exploded perspective view of first and second conductor terminals of the printed wiring board connector according to the first embodiment. It is a perspective view which shows the engagement state of the 1st and 2nd conductor terminal of the connector for printed wiring boards of Embodiment 1. FIG. It is a figure explaining the state which connects the circuits of a different printed wiring board using the printed wiring board connector of Embodiment 1. FIG. It is principal part sectional drawing of the connector for printed wiring boards of Embodiment 2 of this invention.

Hereinafter, a printed wiring board connector (hereinafter abbreviated as a connector) for connecting circuits of different printed wiring boards of the present invention will be described based on embodiments.
(Embodiment 1)
As shown in FIGS. 1 to 3, the connector 10 of this embodiment includes a plurality of first conductor terminals 1 formed by bending a flat metal conductor into a U-shape, and a plurality of second conductor terminals. 2 and a coil spring 3, which is an elastic member, are inserted into holes formed in a synthetic resin housing 4. In the illustrated example, the first conductor terminal 1 and the second conductor terminal 2 have three and one row, respectively, but the number and the number of rows can be increased or decreased as necessary. Not too long.

  The first conductor terminal 1 and the second conductor terminal 2 are each formed as shown in FIG. That is, the first conductor terminal 1 includes a flat contact portion 11 and a pair of flat support members 12 having elasticity extending at right angles to and parallel to the contact portion 11 from both ends of the contact portion 11. And the elastic part 13 which bends and bends the front-end | tip part of a pair of supporting member 12, and the pair of latching protrusions 14 are formed by bend | folding the return end of the elastic part 13 in the mutually opposite direction. On the other hand, the second conductor terminal 2 has a flat contact portion 21 and a pair of flat support members 22 extending from both ends of the contact portion 21 at right angles to and parallel to the contact portion 21. A cylindrical portion 23 into which the folded portion of the elastic portion 13 of the first conductor terminal 1 can be inserted is formed at the distal ends of the pair of support members 22, and the first conductor terminal 1 is locked to the cylindrical portion 23. A slit 24 with which the protrusion 14 is engaged is formed. Note that the positions where the slits 24 are formed may be reversed in the vertical relationship in FIG. In this case, it goes without saying that the elastic portion 13 of the first conductor terminal 1 has the folding projections reversed and the locking projections 14 are aligned with the positions of the slits 24.

  The slit width of the slit 24 of the second conductor terminal 2 is formed wider than the thickness of the locking projection 14 of the first conductor terminal 1. Further, the distance between the pair of support members 12 of the first conductor terminal 1 is wider than the distance between the pair of support members 22 of the second conductor terminal 2 by the thickness of the pair of support members 22. Further, protrusions 15 and 25 are provided at the center portions of the contact portions 11 and 21 of the first conductor terminal 1 and the second conductor terminal 2, respectively.

  As shown in FIG. 2, the housing 4 includes a receiving hole 41 having both ends of a rectangular cross-section into which a pair of support members 12 and 22 of the first conductor terminal 1 and the second conductor terminal 2 can be inserted, A plurality of through holes 42 each having a circular cross section for mounting the coil spring 3 are provided. Further, the mounting surface 44 in which the housing hole 41 of the housing 4 is opened is formed in parallel so as to face the printed wiring board to be connected. Further, a plurality of fixing portions 43 for fixing the housing 4 to a printed wiring board (not shown) are extended at the end portion of the mounting surface 44. A plurality of so-called snap fits 45 as elastically deformable fixing members are provided on the surface of each fixing portion 43 facing the printed wiring board.

  The snap fit 45 includes a columnar base portion 45a formed by projecting from the surface of the fixing portion 43 facing the printed wiring board, and a conical locking head portion 45b having a bottom surface larger in diameter than the base portion 45a. It is formed. Further, at least a part of the base 45a on the locking head 45b side and the locking head 45b are divided into a plurality (two in the illustrated example) in the circumferential direction by slits. Further, the conical portion of the locking head 45b at the portion where the slit is formed is formed in a shape cut out in accordance with the outer diameter of the base 45a.

  Next, the assembly procedure of the connector 10 formed in this way will be described. First, the coil spring 3 is inserted and attached to the through hole 42, and the pair of support members 22 of the second conductor terminal 2 are respectively inserted into the pair of receiving holes 41 that sandwich the coil spring 3. Next, the pair of support members 12 of the first conductor terminal 1 are inserted from the openings on the opposite side of the pair of receiving holes 41 into which the second conductor terminals 2 are inserted. As a result, the elastic portion 13 of the first conductor terminal 1 is inserted into the cylindrical portion 23 of the second conductor terminal 2, and the elastic portion 13 is elastically deformed so that the locking projection 14 is within the cylindrical portion 23. Inserted.

  At this time, in order to facilitate the insertion of the locking projection 14 into the cylindrical portion 23, it is preferable that the locking projection 14 is formed to be inclined and an inclined surface is formed on the inner surface of the distal end of the cylindrical portion 23. According to the present embodiment, since the space 41a corresponding to the elastic portion 13 is opened in the accommodation hole 41 in which the second conductor terminal 2 is accommodated, the needle-shaped healing is made from the opening of the space 41a. It is also possible to insert a tool and deform the elastic portion 13 to insert the locking projection 14 into the cylindrical portion 23.

  Next, when the locking projection 14 reaches the position of the slit 24 formed in the cylindrical portion 23, the elasticity of the elastic portion 13 is restored and the locking projection 14 is inserted into the slit 24. As a result, the coil spring 3 is compressed by the contact portions 11 and 21 of the first and second conductor terminals 2, and the first conductor terminal 1 and the second conductor terminal 2 are coiled in directions protruding from the receiving holes 41, respectively. It is biased by the spring 3. As a result, a gap 50 is formed between the contact portions 11 and 12 and the mounting surface 44 of the housing 4. This gap 50 becomes an expansion / contraction allowance for the first and second conductor terminals 1 and 2. In this way, the connector 10 is assembled as shown in FIG.

  Next, a procedure for connecting lands of conductor patterns formed on two printed wiring boards using the connector 10 of this embodiment will be described. As shown in FIG. 6, a plurality of lands 53 for connection to an external circuit are formed on the two printed wiring boards 51 and 52, respectively. The number and arrangement of the lands 53 and the number and arrangement of the contact portions 11 and 21 of the first and second conductor terminals 1 and 2 of the connector 10 are formed to coincide with each other. Further, the printed wiring boards 51 and 52 are formed with a required number of through holes 54 that are engaged portions of the snap fit 45 in correspondence with the positions of the snap fit 45 of the connector 10.

  For connecting the connector 10 and the printed wiring boards 51 and 52, for example, the snap fit 45 of the connector 10 is aligned and inserted into the through hole 54 of one printed wiring board 51. As a result, the base 44 a and the locking head 45 b of the split snap fit 45 are reduced in diameter by elastic deformation and smoothly inserted into the through hole 54. When the bottom of the locking head 45b protrudes to the opposite side of the through hole 54, the elastic deformation of the snap fit 45 is restored, and the bottom of the locking head 45b is at the edge of the through hole 54 of the printed wiring board 51. The connector 10 and the printed wiring board 51 are fixed by locking. Similarly, the connector 10 and the printed wiring board 52 are fixed by inserting the snap fit 45 of the connector 10 into the through hole 54 of the other printed wiring board 52 and inserting it. As a result, the contact portions 21 of the first and second conductor terminals 1 and 2 of the connector 10 are pressed against the land 53 by the elastic force of the coil spring 3 respectively, and the land of the printed wiring boards 51 and 52 is pressed by a predetermined contact pressure. 53 are electrically connected by the first and second conductor terminals 1 and 2.

  As described above, according to the connector 10 of the present embodiment, the coil spring 3 is mounted in the through hole 42 formed in the housing 4, and the pair of support members 12 of the first and second conductor terminals 1 and 2. , 22 are inserted into the pair of receiving holes 41 from opposite directions, and the slits of the second conductor terminal 2 are formed by elastic deformation of the pair of support members 12, 22 of the first or second conductor terminals 1, 2. 24 is engaged with the locking protrusion 14 of the first conductor terminal 1. As a result, the maximum distance between the contact portions 11 and 21 of the first and second conductor terminals 1 and 2 is restricted, and the first and second conductor terminals 2 are controlled according to the slit width of the slit 24 of the second conductor terminal 2. A connector is formed in which the distance between the contact portions 11 and 21 of the conductor terminals 1 and 2 can be expanded and contracted. Therefore, a connector for connecting different printed wiring boards 51 and 52 can be realized by simple production or assembly work.

  Further, the contact portions 11 and 22 of the first and second conductor terminals 1 and 2 are pressed against the lands 53 of the conductor patterns of the printed wiring boards 51 and 52 to be connected, respectively, and the housing 4 is respectively fitted by the snap fit 45. Since the respective contact portions 11 and 22 are pressed against the land 53 by the elastic force of the coil spring 3 by being fixed to the printed wiring boards 51 and 52, different printed wiring boards can be used without using solder. 51 and 52 can be electrically connected to each other.

  In particular, in the present embodiment, an elastic portion 13 is formed by bending and bending the distal ends of a pair of support members 12 in which the first conductor terminals 1 are formed of plate members, and the folded ends of the elastic portions 13 are opposite to each other. A pair of locking projections 14 is formed by bending, and the folded portion of the elastic portion 13 of the first conductor terminal 1 can be inserted into the distal end portion of the pair of support members 22 in which the second conductor terminal 2 is a plate member. Since the cylindrical portion 23 is formed and the slit 24 is formed in the cylindrical portion 32, the engagement strength between the first and second conductor terminals 1 and 2 can be increased.

  Moreover, according to this embodiment, the fixing member of the connector 10 protrudes from the housing 4 and has a columnar base portion 45a and a conical locking head portion 45b having a bottom surface larger in diameter than the base portion 45a. And at least part of the locking head portion 45b and the base portion 45a is divided into a plurality of portions in the circumferential direction by slits, so that the through holes formed in the printed wiring boards 51 and 52 are used. By inserting the snap fit 45 into the hole 54, the connector 10 can be easily attached to and detached from the printed wiring boards 51 and 52, and can be stably fixed, so that the reliability can be improved.

(Embodiment 2)
FIG. 7 shows a cross-sectional view of the essential parts of a printed wiring board connector according to Embodiment 2 of the present invention. In the present embodiment, the first conductor terminal 61 and the second conductor terminal 62 are provided with openings at both ends, the receiving hole 71 into which the first conductor terminal 61 and the second conductor terminal 62 are inserted from the openings on the opposite sides, the first conductor terminal 61 and the second conductor terminal. A resin housing 64 to which a coil spring 63, which is an elastic member that urges the conductor terminal 62 in a direction protruding from each opening, can be mounted. The first conductor terminal 61 and the second conductor terminal 62 can be extended and contracted in the insertion direction with respect to the flat contact portions 65 and 68 disposed so as to protrude from the openings and the end portions inserted into the receiving holes 71, respectively. Engaging portions 67 and 70 to be engaged are formed. Although not shown, the housing 64 is formed with a conductor pattern in which the contact portions 65 and 68 of the first conductor terminal 61 and the second conductor terminal 62 are electrically connected to the housing 64 as in the first embodiment. A fixing member for fixing to the two printed wiring boards is provided.

  The engaging portions 67 and 70 of the present embodiment are formed by bending each other into a bowl shape, but the present invention is not limited to this, and the same configuration as that of the first embodiment can be adopted. Also, one engagement portion 70 is formed in an annular shape, and the other engagement portion 67 is formed in the same shape as the snap fit of the first embodiment, and the snap fit is inserted into the annular engagement portion 70. It is also possible to adopt a configuration in which the two are engaged.

  According to the present embodiment, different printed wiring boards 51 and 52 can be electrically connected to each other without using solder with a simpler configuration than that of the first embodiment, and manufacturing and assembly operations can be simplified.

  Note that the fixing member of the connector of the present invention is not limited to the snap fit 45 of the above-described embodiment. In short, the engagement member is engaged with an engaged portion such as a hole formed in the printed wiring board by elastic deformation. A joint member can be employed.

DESCRIPTION OF SYMBOLS 1 1st conductor terminal 2 2nd conductor terminal 3 Coil spring 4 Housing 11, 21 Contact part 12, 22 Support member 13 Elastic part 14 Locking protrusion 23 Cylindrical part 24 Slit 41 Accommodation hole 42 Through-hole 43 Fixing part 44 Mounting surface 45 snap fit

Claims (4)

Both ends are provided so that the first conductor terminal and the second conductor terminal are respectively inserted into the receiving hole into which the first conductor terminal and the second conductor terminal are inserted from the openings on the opposite sides. Comprising a resin housing to which an elastic member for urging in a direction protruding from the opening can be mounted;
The first conductor terminal and the second conductor terminal are engaged with each other so as to be able to expand and contract in the insertion direction by elastic deformation at a contact portion that protrudes from the opening and an end portion that is inserted into the accommodation hole. An engaging portion is formed,
The housing includes a fixing member that fixes the housing to two printed wiring boards on which a conductor pattern for electrically connecting the contact portions of the first conductor terminal and the second conductor terminal is formed. A printed wiring board connector. A contact portion, a pair of elastic support members extending in parallel from both ends of the contact portion, and a pair of locking projections formed in opposite directions at the tips of the pair of support members. 1 conductor terminal;
A contact portion, a pair of support members extending in parallel from both ends of the contact portion, and a slit that engages with a locking projection of the first conductor terminal are formed at the ends of the pair of support members. Two conductor terminals;
A pair of receiving holes provided with both ends open, into which the pair of support members of the first conductor terminal are respectively inserted from one end, and the pair of support portions of the second conductor terminal are respectively inserted from the other end And both ends of the first conductor terminal and the second conductor terminal are interposed between the contact portion of the first conductor terminal and the contact portion of the second conductor terminal. Comprising a housing made of resin having a through hole to which an elastic member for biasing the conductor terminal in a direction protruding from the accommodation hole is mounted,
The housing includes a fixing member for fixing the housing to two printed wiring boards on which a conductor pattern for electrically connecting the first conductor terminal and the second conductor terminal is formed. Connector. The first conductor terminal has an elastic portion formed by bending and bending the tip ends of the pair of support members, and the pair of locking projections are formed by bending the folded ends of the elastic portions in opposite directions. And
The second conductor terminal has a cylindrical portion into which the folded portion of the elastic portion of the first conductor terminal can be inserted at the distal end portion of the pair of support members, and the slit is formed in the cylindrical portion. The printed wiring board connector according to claim 2, wherein:   The contact portions of the first and second conductor terminals have a flat plate shape, and protrusions that come into contact with the conductor pattern of the printed wiring board are formed on the flat contact portion. Item 3. A printed wiring board connector according to Item 2.

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