JP2006085944A - Connector between circuit boards - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connector between circuits boards, capable of absorbing or canceling both slippage in the X direction and the Y direction. <P>SOLUTION: A socket 1 is equipped with a common housing 2 mounted to a circuit board B1, a signal terminal block 6 and a power supply terminal block 4 disposed side by side with a prescribed interval C2 kept between them, a signal terminal 5 provided so as to be laid over the common housing 2 and the signal terminal block 6, and a power supply terminal 3 provided so as to be laid over the common housing 2 and the power supply terminal block 4. A plug 11 is equipped with another common housing 12 mounted to another circuit board B2, another signal terminal 14 and another power supply terminal 13 which are directly mounted to the common housing 12, and a barrier plate 17 inserted in the prescribed interval C2 to compensate a gap between the signal terminal 5 and another signal terminal 14 by pushing the signal terminal block 6 in the X direction. Sliding mechanism (3dx, 3dy, 3dz, 13dx) to force these terminals 3, 13 into contact with the contact parts 3d, 13d of the power supply terminal 3 and the power supply terminal 13 slidably in the X direction are provided. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  In the present invention, a socket is mounted on one circuit board (wiring board) and a plug is mounted on the other circuit board, and the plugs are fitted into the socket by overlapping the two boards. It is related with the board-to-board connector which achieves a general connection.

  As an inter-board connector, for example, one shown in FIG. 13 is known (see Patent Document 1). The inter-board connector C includes a socket S attached to one circuit board B1 and a plug P attached to the other circuit board B2. When the plug P is fitted into the socket S, both circuit boards B1 are connected. , B2 are electrically connected to each other. A plurality of socket terminals ST are implanted in the socket S, and a plurality of plug terminals PT are implanted in the plug P. These terminals ST and PT have tail portions ST1 and PT1 and contact portions ST2 and PT2, respectively. The tail portions ST1 and PT1 are soldered and fixed to predetermined portions of the circuit boards B1 and B2, respectively. The contact portions ST2 and PT2 come into contact with each other when the plug P is fitted into the socket S.

  In such an inter-board connector C, it is often performed that most of the numerous terminals ST (PT) are used as signal terminals and several are used as power supply terminals. The reason is that the shape of the power terminal and the signal terminal are the same, so that the cost can be reduced by sharing the parts. However, when there is a need to supply a relatively large current of several amperes to the power supply terminal, this type of connector C (the type in which the shape of the signal terminal and the power supply terminal is the same) can no longer meet this need.

  For example, it is set so that 0.5 ampere (rated current) can flow through one terminal ST (PT), and 8 of the many terminals ST (PT) are used as power supply terminals, resulting in a total current of 4 amperes. Assuming that In this case, if any one of the eight power terminals is unreliable and cannot be properly energized, this connector C uses the remaining seven power terminals with 4 amps. As a result, a current of 4/7 = 0.57 ampere flows per power supply terminal, which exceeds the rated current. Alternatively, in this case, if the remaining seven power terminals have the same resistance value, a current of 0.57 amperes will flow evenly. The current flows in a concentrated manner on a power supply terminal having a small resistance, and there is a possibility that a current several times the rated current may flow.

  When such a thing occurs, the terminal through which a large current flows generates heat, which may adversely affect the connector C itself, the circuit boards B1 and B2, and further the electronic device in which it is incorporated. That is, when a part of the plurality of terminals ST (PT) repeats heat generation when energized and cooling when interrupted, the housing in which the terminal is implanted is damaged by repeated thermal stress, The circuit boards B1 and B2 on which the housing is mounted may be warped, peripheral electronic elements may be exposed to this heat and performance may be deteriorated, and normal operation of the electronic device may be impaired. Therefore, it can be said that there is a limit to the method of increasing the amount of current that can be supplied by increasing the number of terminals ST (PT) used as power supply terminals.

  Therefore, in such a case, the above-mentioned large current of 4 amperes can be supplied to one power supply terminal by abandoning the merit of sharing the signal terminal and the power supply terminal and making the power supply terminal larger than the signal terminal. The power terminal connector consisting of a socket and plug in which this large power terminal (rated current of 4 amps) is attached is replaced with a socket and plug in which the original signal terminal (rated current of 0.5 amp) is attached. It is conceivable to prepare separately from a signal terminal connector consisting of

  Here, although the design of the housing of the connector C shown in FIG. 13 to which the terminals ST and PT are mounted is slightly changed, the above-described large power supply terminal (rated current of 4 amperes) can be incorporated. As mentioned above, when the rated current (4 amperes) of the power terminal is increased to 8 times the rated current (0.5 amperes) of the signal terminal, the size of the power terminal is increased several times that of the signal terminal accordingly. Therefore, with a slight design change of the housing, this large power terminal cannot be accommodated in the housing, and this idea cannot be realized.

  Therefore, as described above, the signal terminal connector and the power terminal connector are prepared separately, but this means that these two connectors must be separately mounted on the circuit boards B1 and B2. Means. In this case, since each connector is composed of a socket and a plug, the total number of sockets and plugs attached to the circuit boards B1 and B2 is 4, and the sockets and plugs are fixed to the circuit boards B1 and B2 by soldering. Are four places.

  Depending on circumstances, there may be two power terminal connectors for one signal terminal connector. In this case, the total number of sockets and plugs attached to the circuit boards B1 and B2 Therefore, the number of parts fixed by soldering each component (socket, plug) to the circuit boards B1 and B2 is six in total.

JP-A-6-325825 JP-A-9-306613

  Thus, when a plurality of sockets and a plurality of plugs are mounted on the circuit boards B1 and B2, respectively, even if each of them is correctly soldered and fixed within the mounting tolerance range, the circuit boards B1 and B2 are approached so as to overlap each other. In addition, when trying to fit the respective plugs into the respective sockets, a situation may occur in which the plugs cannot be fitted properly. The reason for this is that in this case, the mounting error of each socket / plug is added and the total error is increased, and the total error is increased by a factor of four when there are four parts. .

  For example, a power terminal socket and a signal terminal socket are mounted on one circuit board B1, and a power terminal plug and a signal terminal plug are mounted on the other circuit board B2, and these sockets and plugs are respectively fitted. Consider the case of combining. Assuming that the mounting tolerance in the longitudinal direction of each socket and plug is ± 0.2 mm, the power terminal socket is offset by +0.2 mm, the signal terminal socket is shifted by −0.2 mm, and the power terminal plug is −0. A case where the signal terminal plug is shifted by 2 mm and +0.2 mm can be considered. In this case, when one plug socket is fitted, a double error of 0.4 mm becomes apparent in the other plug socket, and the other cannot be fitted.

  Of course, in order to absorb the above error, a floating structure is generally adopted in this type of connector, but even if this structure is adopted, there is a limit to the error that can be absorbed. Also, if the mounting accuracy is improved by, for example, halving the mounting tolerance of each socket / plug to the circuit boards B1 and B2, it is possible to solve the problem that the socket / plug cannot be fitted. However, this not only involves a significant change in assembly equipment, but also causes problems such as a deterioration in yield and a significant increase in cost.

  Accordingly, the present applicant has previously proposed Japanese Patent Application No. 2004-218403 in order to solve this problem.

  As shown in FIGS. 1 to 3, the invention described in this application is a signal terminal block in which a socket 1 and a common housing 2 mounted on a circuit board B1 are arranged adjacent to each other with a predetermined distance C2. 6 and the power supply terminal block 4, the signal terminal 5 provided across the common housing 2 and the signal terminal block 6, and the power supply terminal 3 provided across the common housing 2 and the power supply terminal block 4. As shown in FIGS. 6 to 8, the plug 11 is connected to another common housing 12 attached to another circuit board B2, another signal terminal 14 directly attached to the common housing 12, and another The power terminal 13 is configured.

  According to the present invention, the common housing 2 is attached to one of the circuit boards B1 although the structure is substantially the same as that in which the plurality of sockets and the plurality of plugs are mounted on the circuit boards B1 and B2. Since only the other common housing 12 is attached to the other circuit board B2, the number of parts attached to each circuit board B1 and B2 is the same as in the case of one connector. Therefore, the above-described problem of doubling the mounting error does not occur, and smooth fitting can be ensured. This invention does not constitute a publicly known invention before the application because the above-mentioned application has not been published at the time of this application.

  By the way, the floating structure of the connector has a structure that depends on the displacement absorbing portions 3e and 5e formed in a mountain shape on the power supply terminals 3 and the signal terminals 5, respectively. Although a good floating function is exhibited with respect to Y, there is a problem that it is difficult to exhibit the floating function in the direction X orthogonal to the bridging direction Y. However, since the mounting error of the socket 1 and the plug 11 to the boards B1 and B2 can naturally occur not only in the direction Y but also in the direction X, it is actually a problem if the error in the direction X is difficult to absorb.

  In particular, since the power terminal 3 has a larger rated current value than the signal terminal 5, the power terminal 3 is formed wider than the width of the signal terminal 5, and the displacement absorbing portion 3 e is significantly larger than the displacement absorbing portion 5 e of the signal terminal 5. Since the rigidity in the direction X is higher than that of the signal terminal 5, the floating function in the direction X is significantly reduced. For this reason, when the displacement in the direction X is absorbed, a large stress is concentrated on the tail portion 3b for soldering and fixing each power supply terminal 3 to the substrate B1, and the soldered portion of the tail portion 3b is peeled off and brought into contact. There was concern about the situation of failure.

  On the other hand, with respect to the signal terminals 5, the sockets 1 and the plugs 11 have a pitch of 0.5 mm or 0.3 mm because the pitch between the signal terminals 5 is increasingly required to reduce the size of electronic devices. Is shifted in the direction X, the problem of poor contact due to this shift becomes more serious. That is, in this case, if the signal terminals 5 and 14 that should be in contact with each other are not in contact and the terminals 5 are in contact with the insulating portion between the terminals 14 and 14, or if the displacement is further large, the terminals 5 There may be a case where the terminal contacts the terminal 14 adjacent to the terminal 14 that should be in contact.

  An object of the present invention created in view of the above circumstances is to provide an inter-board connector that can absorb and eliminate not only the direction Y but also the deviation in the direction X.

  In order to achieve the above object, an invention according to claim 1 is an inter-board connector comprising a socket attached to one circuit board and a plug attached to the other circuit board, and one of the plug and the socket. Is a signal housing provided across a common housing mounted on the circuit board, a signal terminal block and a power supply terminal block arranged adjacent to each other at a predetermined interval, and the common housing and the signal terminal block. And a power supply terminal provided across the common housing and the power supply terminal block, and the other of the plug and the socket is connected to another common housing mounted on another circuit board. Another signal terminal and another power supply terminal mounted directly on the common housing, and inserted at the predetermined interval, the signal terminal and the other power terminal And a partition for pressing the signal terminal block to eliminate the displacement when the signal terminal is displaced in a direction orthogonal to the signal terminal bridging direction, and the power supply terminal and the other power supply terminal Is provided with a slide mechanism for bringing these terminals into contact with each other so as to be slidable in the orthogonal direction.

  According to a second aspect of the present invention, the power terminal is made larger than the signal terminal, the other power terminal is made larger than the other signal terminal, and the slide mechanism is connected to the power terminal and the separate terminal. A flat plate portion provided along one of the contact portions of the power supply terminal and formed along the orthogonal direction, and a plurality of claw portions provided on the other of the contact portions and sandwiching the flat plate portion from the left and right. .

  According to a third aspect of the present invention, the power terminal has a displacement absorbing portion formed by bending a metal plate, and a slit for adjusting rigidity is formed in the displacement absorbing portion.

  According to a fourth aspect of the present invention, the power supply terminal has a plurality of tail portions for fixing to the circuit board.

  The board-to-board connector according to the present invention can exhibit the following effects.

  (1) According to the first aspect of the present invention, it is possible to absorb and eliminate not only the bridging direction of each terminal (the above-mentioned direction Y) but also the deviation in the direction orthogonal to that direction (the above-mentioned direction X).

  (2) According to the invention of claim 2, the slide mechanism provided at the contact portion between the power terminal and the other power terminal can be realized with a simple configuration.

  (3) According to the invention of claim 3, the rigidity of the power supply terminal can be easily adjusted by changing the width of the slit.

  (4) According to the invention of claim 4, it is possible to secure the stability and support rigidity of the power terminal block supported by the power terminal.

  Preferred embodiments of the present invention will be described with reference to the accompanying drawings.

  The board-to-board connector according to the present embodiment includes a socket attached to one circuit board and a plug attached to the other circuit board, and the circuit boards are electrically connected to each other by fitting the plug into the socket. To connect to.

<Socket>
First, the socket will be described with reference to FIGS.

  As shown in FIG. 1, the socket 1 attached to the circuit board B1 (see FIG. 13) is separated from the common housing 2 mounted on the circuit board B1 by a predetermined distance C1 from the common housing 2, and is separated from each other by a predetermined distance. The signal terminal block 6 and the power terminal block 4 which are arranged adjacent to each other across the C 2, the signal terminal 5 provided across the common housing 2 and the signal terminal block 6, the common housing 2 and the power terminal block 4, And a power supply terminal 3 provided so as to be bridged.

  Specifically, the common housing 2 is formed in an annular shape, and the power supply terminal block 4 and the signal terminal block 6 are respectively spaced apart from the inner peripheral wall of the common housing 2 by a predetermined distance C1. Contained. Further, another predetermined interval C2 is set between the power supply terminal block 4 and the signal terminal block 6.

  The interval C1 is set to a dimension in which the housing portions 12a and 12b of the plug 11 can be inserted when the plug 11 shown in FIG. Further, the interval C2 is set to a dimension in which a partition wall 17 of the plug 11 described later can be inserted.

  A pair of power supply terminal blocks 4 having the same shape is disposed so as to sandwich the signal terminal block 6. That is, the common housing 2 has a signal terminal block common housing portion 2a in which a space for accommodating the signal terminal block 6 is formed at the center thereof, and the power terminal block 4 is accommodated at both ends. Power supply terminal block common housing part 2b in which a space is formed.

  The signal terminal block common housing portion 2a includes a pair of wall bodies arranged in parallel, and the power terminal block common housing portion 2b includes a wall body formed in a substantially U shape in plan view. By connecting these housing portions 2a and 2b, the common housing 2 is formed in an annular shape as a whole, and the signal terminal block 6 and the power supply terminal block 4 are accommodated in the spaces inside the housing 2, respectively. .

  A power supply terminal 3 is mounted on the power supply terminal block 4 and the common housing 2 so as to bridge them. The power supply terminals 3 are mounted on the left and right power supply terminal blocks 4 in pairs (two) in total, two pairs (four). These power supply terminals 3 are set in size so that a current of 4 amperes can flow in the illustrated example.

  On the other hand, the signal terminal 5 is mounted on the signal terminal block 6 and the common housing 2 so as to bridge them. The signal terminals 5 are attached to the signal terminal block 6 in a pair of left and right 50 pairs at intervals of 0.5 mm in the longitudinal direction. Each signal terminal has a rated current of 0.5 amperes.

  These numerical values (2, 4, 4 amperes, 0.5 mm, 50 pairs, 0.5 amperes) are merely examples, and other numerical values may be used.

<Power terminal of socket>
As shown in FIG. 2, the power supply terminal 3 is mounted on the power supply terminal block 4 and the power supply terminal block common housing portion 2b so as to bridge the power supply terminal block 4. Floating support is provided for the housing part 2b. In other words, the power supply terminal 3 has both a function as a terminal for passing a current and an elastic support function for floatingly supporting the power supply terminal block 4 with respect to the common housing portion 2b.

  As shown in FIG. 4, the power supply terminal 3 is formed by pressing a metal plate, and includes a housing fixing portion 3a press-fitted into a groove formed in the common housing portion 2b, and a lower end of the housing fixing portion 3a. A tail portion 3b extending to the side, a block fixing portion 3c press-fitted into a groove formed in the power terminal block 4, a contact portion 3d extending upward from the block fixing portion 3c, and the housing Between the fixed portion 3a and the block fixed portion 3c, there is a displacement absorbing portion 3e formed in a substantially mountain shape (inverted U shape).

  The tail portion 3b is fixed by soldering to a power line lead portion printed on the circuit board B1 (see FIG. 13) on which the socket 1 of FIG. 1 is mounted. In this embodiment, the tail portion 3b is shown in FIGS. As shown in FIG. 2, two wires are drawn from one power supply terminal 3. The number of tail portions 3b may be one. However, if there are two tail portions 3b as in the present embodiment, one power terminal block 4 is supported by four tail portions 3b. The support rigidity to the substrate B1 is improved and the position can be accurately maintained.

  Returning to FIG. 2, the contact portion 3 d is disposed in an insertion hole 4 a formed in the power supply terminal block 4. When the plug 11 of FIG. 6 is fitted into the socket 1 of FIG. 1, another power supply terminal 13 on the plug 11 side is inserted into the insertion hole 4a. As shown in FIG. 4, the contact portion 3d has three claw portions 3dx, 3dy, and 3dz. These claw portions 3dx, 3dy, and 3dz are alternately arranged adjacent to each other in a direction X orthogonal to the bridging direction Y of the power supply terminal 3, and contact portions 13c (see FIG. 7) of another power supply terminal 13 shown in FIG. The flat plate portion 13cx (see FIG. 9) formed on the left and right sides is sandwiched from the left and right.

  The displacement absorbing portion 3e is arranged at a distance C1 between the power terminal block 4 and the common housing portion 2b so as not to obstruct the insertion of the housing portion 12b of the plug 11 of FIG. In the displacement absorbing portion 3e, slits 3ex for adjusting the rigidity are formed along the longitudinal direction. The displacement absorbing portion 3e bends appropriately when the plug 11 of FIG. 4 is fitted into the socket 1, and allows the displacement of the power terminal block 4 with respect to the common housing portion 2b (mainly the displacement in the bridging direction Y of the power terminal 3). To do.

  In the illustrated example, the power terminal 3 is manufactured by pressing a phosphor bronze plate having a thickness of 0.2 mm. The width of the portion separated by the slit 3ex of the displacement absorbing portion 3e, the width of each tail portion 3b, The widths of the claw portions 3dx, 3dy, and 3dz of the contact portion 3d are about 0.8 mm, respectively, and can handle a large current (4 amperes). Moreover, the length of the part which each claw part 3dx, 3dy, 3dz contacts with the flat plate part 13cx when the flat plate part 13cx is sandwiched from the left and right is about 0.8 mm × 3 = about 2.4 mm, A large current (4 amperes) can be passed without problems.

  These numerical values (0.2 mm, 0.8 mm, 4 amperes, 2.4 mm) and material (phosphor bronze) are only examples, and other numerical values and materials (conductors) may be used.

<Socket signal terminal>
As shown in FIG. 3, the signal terminal 5 is mounted on the signal terminal block 6 and the signal terminal block common housing portion 2a so as to cross over the signal terminal block 6, and the signal terminal block 6 is connected to the common terminal. Floating support is provided for the housing part 2a. That is, the signal terminal 5 has both a function as a terminal for passing a current and an elastic support function for floatingly supporting the signal terminal block 6 with respect to the common housing portion 2a.

  As shown in FIG. 5, the signal terminal 5 is formed by pressing a metal plate, and is pressed from a housing fixing portion 5a press-fitted into a groove formed in the common housing portion 2a, and a lower end of the housing fixing portion 5a. A tail portion 5b extending laterally, a block fixing portion 5c press-fitted into a groove formed in the signal terminal block 6, a contact portion 5d extending upward from the lower end of the block fixing portion 5c, Between the housing fixing part 5a and the contact part 5d, there is a displacement absorbing part 5e formed in a substantially mountain shape.

  The tail portion 5b is fixed by soldering to a signal line lead portion printed on the circuit board B1 (see FIG. 13) on which the socket 1 of FIG. 1 is mounted. As shown in FIG. One is drawn from each five.

  As shown in FIG. 3, the contact portion 5 d is accommodated in an insertion groove 6 a formed in the signal terminal block 6. When the wall of the housing portion 12a of the plug 11 shown in FIG. 6 to be described later is fitted into the gap C1 between the common housing portion 2a and the signal terminal block 6, the contact portion 5d is connected to the signal terminal 14 on the plug 11 side. Touched.

  The displacement absorbing portion 5e is arranged in the space C1 so as not to obstruct the insertion of the wall of the housing portion 12a of the plug 11 shown in FIG. The displacement absorbing portion 5e is appropriately bent when the plug 11 of FIG. 6 is fitted into the socket 1, and the displacement of the signal terminal block 6 with respect to the common housing portion 2a (mainly the displacement in the bridging direction Y of the signal terminal 5). Allow.

  In the illustrated example, the signal terminal 5 is manufactured by pressing a phosphor bronze plate having a thickness of 0.2 mm, and the width of the displacement absorbing portion 5e, the tail portion 5b, the contact portion 5d, and the like is about 0.2 mm. It has a wire shape and is not suitable for large current flow, and the rated current is 0.5 amperes that matches the signal current.

  These numerical values (0.2 mm, 0.2 mm, 0.5 ampere) and material (phosphor bronze) are merely examples, and other numerical values and materials (conductors) may be used.

<Plug>
Next, the plug 11 will be described with reference to FIGS.

  As shown in FIG. 6, a plug 11 attached to a circuit board B2 (see FIG. 13) different from the circuit board B1 on which the socket 1 is mounted is connected to another common housing 12 attached to another circuit board B2. And another signal terminal 14 and another power supply terminal 13 directly attached to the common housing 12 and a partition wall 17.

  Specifically, the common housing 12 has a signal housing portion 12a at the center and a power supply housing portion 12b at both ends. The signal housing portion 12a and the power supply housing portion 12b are partitioned by a partition wall 17. The partition wall 17 contributes to increasing the rigidity of the common housing 12 as a whole, and displaces the signal terminal 5 of the socket 1 in the pitch direction (direction X orthogonal to the bridging direction Y of the signal terminal 5) to thereby signal the plug 11 14 has a role of adjusting the relative position with respect to 14.

  The signal housing portion 12a is formed in a bottomed box shape. The signal housing portion 12a has 50 pairs of left and right signal terminals at a predetermined interval (0.5 mm) in the longitudinal direction in accordance with the socket 1 side. 14 is mounted. Each signal terminal 14 has a rated current of 0.5 amperes.

  Each of the power supply housing parts 12b is formed in a bottomed box shape, and a pair of left and right power supply terminals 13 are mounted on each power supply housing part 12b in accordance with the socket 1 side. Each power supply terminal 13 is sized so that a current of 4 amperes can flow therethrough.

  The above numerical values (0.5 mm, 50 pairs, 0.5 amperes, 4 amperes) are merely examples, and other numerical values may be used. However, it should be matched with the value on the socket 1 side.

<Plug power terminal>
As shown in FIGS. 7 and 9, the power supply terminal 13 is directly mounted on the power supply housing portion 12b, and a housing fixing portion 13a press-fitted into a groove formed in the power supply housing portion 12b, and a housing fixing portion. The tail part 13b extended from the lower end of 13a to the side, and the contact part 13c extended upwards from the housing fixing | fixed part 13a.

  The tail portion 13b is fixed by soldering to a power line lead portion printed on the circuit board B2 (see FIG. 13) on which the plug 11 of FIG. 6 is mounted. In the present embodiment, as shown in FIG. One power terminal 13 is pulled out from each power terminal 13 (however, it does not prevent two or more tail portions 13b from being pulled out).

  The contact portion 13c is disposed in an insertion hole 15 formed in the power supply housing portion 12b. When the plug 11 of FIG. 6 is fitted into the socket 1 of FIG. 1, the power supply terminal block 4 on the socket 1 side is inserted into the insertion hole 15. At this time, the contact portion 3d of the power supply terminal 3 on the socket 1 side comes into contact with the contact portion 13c of the power supply terminal 13 on the plug 11 side.

  As shown in FIG. 9, the contact portion 13c of the power supply terminal 13 has a substantially rectangular flat plate portion 13cx formed along the direction X perpendicular to the bottom of the power supply housing portion 12b. The flat plate portion 13cx is formed in a large size so that the rated current is 4 amperes corresponding to the power supply terminal 3 on the socket 1 side, and the claw portions 3dx, 3dy, It is sandwiched between 3dz.

  The flat plate portion 13cx and the claw portions 3dx, 3dy, 3dz are provided in the contact portions 3c, 13c of the power supply terminal 3 and the other power supply terminal 13, and these terminals 3, 13 are arranged along the direction X. And a sliding mechanism for slidably contacting.

  In the illustrated example, the power supply terminal 13 is manufactured by pressing a phosphor bronze plate having a thickness of 0.2 mm, the length along the direction X of the flat plate portion 13cx is 4.5 mm, and the tail portion 13b. Has a width of about 1.0 mm so that a large current (4 amperes) can flow without problems.

  These numerical values (0.2 mm, 4.5 mm, 1.0 mm) and material (phosphor bronze) are merely examples, and other numerical values and materials (conductors) may be used.

<Signal terminal of plug>
As shown in FIGS. 8 and 10, the signal terminal 14 is directly mounted on the signal housing portion 12 a, and a housing fixing portion 14 a press-fitted into a groove formed in the signal housing portion 12 a, and a housing fixing portion The tail part 14b extended from the lower end of 14a to the side, and the contact part 14c extended upwards from the housing fixing | fixed part 14a.

  The tail portion 14b is soldered and fixed to the signal line lead portion printed on the circuit board B2 (see FIG. 13) on which the plug 11 of FIG. 6 is mounted. In this embodiment, as shown in FIG. One is pulled out from one signal terminal 14.

  As shown in FIG. 8, the contact portion 14c is disposed along the inner wall of the insertion hole 16 formed in a square shape in the signal housing portion 12a. When the plug 11 of FIG. 6 is fitted into the socket 1 of FIG. 1, the signal terminal block 6 on the socket 1 side is inserted into the insertion hole 16. At this time, the contact portion 14c of the signal terminal 14 on the plug 11 side contacts the contact portion 5d of the signal terminal 5 on the socket 1 side.

<Socket / plug fitting>
Next, a state when the plug 11 of FIG. 6 is fitted to the socket 1 of FIG. 1 will be described with reference to FIGS. 11 and 12.

  When the plug 11 of FIG. 6 is fitted into the socket 1 of FIG. 1, the wall of the power supply housing portion 12b on the plug 11 side is inserted into the interval C1 on the socket 1 side, as shown in FIG. The contact portion 13c of the terminal 13 contacts the contact portion 3d of each power supply terminal 3 on the socket 1 side.

  Further, as shown in FIG. 12, the wall of the signal housing portion 12a on the plug 11 side is inserted into the interval C1 on the socket 1 side, and the contact portion 14c of each signal terminal 14 on the plug 11 side is each signal terminal on the socket 1 side. 5 contact part 5d.

  Further, the partition wall 17 shown in FIG. 6 is inserted into the interval C2 shown in FIG.

  Thus, one circuit board B1 on which the socket 1 is mounted and the other circuit board B2 on which the plug 11 is mounted are electrically connected.

<Action>
The operation of the present embodiment having the above configuration will be described.

  When the plug 11 is fitted into the socket 1, the claw portions 3dx, 3dy, 3dz of the contact portion 3d of the power supply terminal 3 of the socket 1 sandwich the flat plate portion 13dx of the contact portion 13d of the power supply terminal 13 of the plug 11 from the left and right. The relative movement in the direction X between the contact portions 3d and 13d is allowed. Therefore, by enlarging both the power supply terminals 3 and 13 so that a large current (4 amperes) can flow, the displacement absorbing portion 3e of the terminal 3 becomes wider, the rigidity in the direction X increases, and the direction 3 of the terminal 3 increases. When the displacement of the power terminals 3 and 13 is difficult, the mounting error in the direction X can be reliably absorbed by the relative movement between the power terminals 3 and 13. The attachment error in the direction Y can be absorbed by the displacement absorbing portion 3e of the power supply terminal 3 shown in FIG.

  When the plug 11 is fitted into the socket 1, the partition wall 17 of the plug 11 is inserted into the interval C <b> 2 of the socket 1. Here, when the plug 11 is fitted in the socket 1 in a state of being displaced in the direction X as described above, the signal terminal 14 on the plug 11 side is displaced in the direction X with respect to the signal terminal 5 on the socket 1 side. In this state, there is a gap between the signal terminals 5 and 14 and the connection between them must be defective. However, the partition wall 17 enters the interval C2 and the signal terminal block 6 By contacting the end face, pressing the end face in the direction X, and moving the signal block 6 in the direction X, the shift is eliminated, and the connection failure of the signal terminals 5 and 14 can be prevented. The mounting error in the direction Y can be absorbed by the displacement absorbing portion 5e of the signal terminal 5 shown in FIG.

  As shown in FIGS. 4 and 9, the slide mechanism that absorbs the error in the direction X of the power supply terminals 3 and 13 has claw portions 3 dx, 3 dy and 3 dz provided in the connection portion 3 d of the terminal 3, and Since it consists of the flat plate part 13dx provided in the connection part 13d, the said slide mechanism is realizable by simple structure at low cost.

  As shown in FIG. 4, since the slit 3ex is provided in the displacement absorbing portion 3e of the power terminal 3, the rigidity of the power terminal 3 can be easily adjusted by changing the width and / or length of the slit 3ex. it can.

  As shown in FIGS. 1 and 4, since the two tail portions 3 b of the power terminal 3 are provided at a predetermined interval in the direction X, the stability and support rigidity of the power terminal block 4 supported by the power terminal 3 are provided. Can be secured.

  In addition, since the two connectors of the power connector and the signal connector are substantially made into one, it is necessary when the two connectors of the power connector and the signal connector are separately mounted on the circuit boards B1 and B2. This eliminates the need for a space between the two and contributes to downsizing of the electronic device by reducing the mounting area accordingly.

  Since the two connectors of the power connector and the signal connector are substantially made into one as described above, in this inter-board connector, each of the signal terminal socket and the power terminal socket is partitioned. Therefore, the mounting area can be further reduced by that amount.

  In this embodiment, since the floating support structure is adopted for the socket 1 on the female side, the overall structure is simplified as compared with the case where the floating support structure is adopted for the plug 11 on the male side. Manufacturing is easy.

  Since the common housing 2 has an annular shape and the power supply terminal block 4 and the signal terminal block 6 are floatingly supported on the inside thereof, the floating support structure is stabilized. Further, the relative movement of the power terminal block 4 and the signal terminal block 6 with respect to the common housing 2 can be stably secured by the predetermined interval C1.

  The relative movement between the power supply terminal block 4 and the signal terminal block 6 can be stably secured by the another predetermined interval C2.

  In the present embodiment, since a pair of power supply terminal blocks 4 are arranged on both sides of the signal terminal block 5, it is symmetrical and has a good balance as a connector, and the directionality when manufacturing the socket 1 and the plug 11, the socket 1 And the directionality in mounting the plug 11 on the circuit boards B1 and B2 becomes unquestioned, and their workability is improved.

<Modification>
Embodiments of the present invention are not limited to the above types.

  For example, in this embodiment, the claw portions 3dx, 3dy, and 3dz are provided in the connection portion 3d of the power supply terminal 3 on the socket 1 side, and the flat plate portion 13cx is provided on the connection portion 13d of the power supply terminal 13 on the plug 11 side. A flat plate portion may be provided in the connection portion 3d of the power supply terminal 3 on the side, and a claw portion may be provided in the connection portion 13d of the power supply terminal 13 on the plug 11 side. Further, the number of claw portions may be any number as long as it is two or more.

  Moreover, although the example which employ | adopted the floating support structure in the socket 1 side was shown in this embodiment, you may employ | adopt a floating support structure in the plug 11 side. Moreover, it is good also as one power supply terminal block 4 shown in FIG.

  Further, the distance C1 between the signal terminal block 6 and the common housing 2 and the distance C1 between the power terminal block 4 and the common housing 2 may be different. Further, the interval C1 and the interval C2 may be the same.

It is a perspective view which shows the socket of the board-to-board connector which concerns on suitable embodiment of this invention. It is the II-II sectional view taken on the line of FIG. It is the III-III sectional view taken on the line of FIG. It is a perspective view of the power supply terminal of a socket. It is a perspective view of the signal terminal of a socket. It is a perspective view which shows the plug of the said board-to-board connector. It is the VII-VII sectional view taken on the line of FIG. It is the VIII-VIII sectional view taken on the line of FIG. It is a perspective view of the power terminal of a plug. It is a perspective view of the signal terminal of a plug. It is sectional drawing of both ends (power supply terminal part) when the said plug is made to fit in the said socket. It is sectional drawing of the center part (signal terminal part) when the said plug is made to fit in the said socket. It is explanatory drawing of the board-to-board connector which shows a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Socket 2 Common housing 3 Power supply terminal 3b Tail part 3d Contact part 3dx Claw part 3dy Claw part 3dz Claw part 3e Displacement absorption part 3ex Slit 4 Power supply terminal block 5 Signal terminal 6 Signal terminal block 11 Plug 12 Different common housing 13 Different Power supply terminal 13d Contact portion 13dx Flat plate portion 14 Another signal terminal 17 Bulkhead B1 One circuit board B2 Other circuit board C2 Predetermined distance X orthogonal direction Y bridging direction

Claims (4)

An inter-board connector comprising a socket attached to one circuit board and a plug attached to the other circuit board,
One of the plug and the socket includes a common housing mounted on the circuit board, a signal terminal block and a power terminal block arranged adjacent to each other at a predetermined interval, and the common housing and the signal terminal block. A signal terminal provided across the power supply terminal, and a power supply terminal provided across the common housing and the power supply terminal block.
The other of the plug and the socket is inserted into another common housing mounted on another circuit board, another signal terminal and another power terminal directly mounted on the other common housing, and inserted at the predetermined interval. And when the signal terminal and the other signal terminal are displaced in a direction orthogonal to the signal terminal bridging direction, a partition for pressing the signal terminal block to eliminate the displacement, and
A board-to-board connector, wherein a sliding mechanism is provided at a contact portion between the power supply terminal and the other power supply terminal so that the terminals are slidable in the orthogonal direction.   The power terminal is made larger than the signal terminal, the another power terminal is made larger than the other signal terminal, and the slide mechanism is connected to one of the contact portions of the power terminal and the other power terminal. The inter-board connector according to claim 1, comprising: a flat plate portion provided along the orthogonal direction and a plurality of claw portions provided on the other of the contact portions and sandwiching the flat plate portion from the left and right.   The inter-board connector according to claim 1 or 2, wherein the power terminal has a displacement absorbing portion formed by bending a metal plate, and a slit for adjusting rigidity is formed in the displacement absorbing portion. The board-to-board connector according to claim 1, wherein the power supply terminal has a plurality of tail portions for fixing to the circuit board.

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