JP2007214139A - Mounting structure for receptacle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mounting structure for a receptacle that allows conductor patterns of a circuit board to be led out with equal lengths from dip holes and that facilitates impedance matching of terminals. <P>SOLUTION: Fixed parts 14 of grounding terminals are disposed on a straight line at intervals J, and fixed parts 15 and 16 of signal terminals are disposed at respective intervals. A terminal group Y2 is formed by two of the signal terminals (e.g., No. 1 and No. 3) adjacent to each other and one of the grounding terminals (No. 2) out of the fixed parts 14, 15 and 16 of the grounding terminals and the signal terminals. An interval K between two of the signal terminals (No. 7 and No. 9) in the same terminal group Y2 is made smaller than the interval J, while an interval M between adjacent signal terminals (No. 6 and No. 10) of adjacent terminal groups Y that are the same in the orientation of the triangles in the terminal groups Y is made greater than the interval J. The conductor patterns N led out from the dip holes 4x of the fixed parts 16 of the signal terminals having the interval K therebetween are allowed to pass between the dip holes 4x of the fixed parts 15 of the signal terminals having the interval M therebetween. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a receptacle mounting structure, and more particularly to a receptacle mounting structure suitable for attaching a receptacle having a narrow pitch structure to a circuit board by a dip method.

  As shown in FIG. 1, the receptacle 1 is mounted on a circuit board (not shown), and a plurality of terminals 3 provided in the plug insertion port 2 come into contact with plug-side terminals inserted in the insertion port 2. A signal is transmitted to the substrate side through these terminals 3.

  There are various types of arrangements of the terminals 3 in the plug insertion slot 2. For example, in the case of an HDMI (registered trademark: High Definition Multimedia Interface) standard product, as shown schematically in FIG. The plug is mounted on the upper surface of the fitting plate 8 to which the plug is fitted, and the width A is about 0.25 mm (the size used for simplifying the following description and does not meet the standard) and the interval B is 1.0 mm. It consists of ten upper terminals 3U having a pitch and nine lower terminals 3L mounted on the lower surface of the fitting plate 8 and having the same width A and the same spacing B. The upper terminals 3U and the lower terminals 3L are half-pitch. It has been shifted by minutes.

  FIG. 15A is a schematic front view showing a part of the upper terminal 3U and the lower terminal 3L. When this receptacle 1 is a so-called surface mounting device on the circuit board 4, as shown in FIG. 15 (b), the terminals 3U and 3L are bent in a crank shape, and solder tail portions 3U 'and 3L' are formed at the tip portions thereof. The tail portions 3U ′ and 3L ′ are formed and soldered to the conductor pattern of the substrate 4. Here, the tail portions 3U ′ and 3L ′ are arranged at equal intervals C of about 0.25 mm, as shown in FIG. 15C, by shifting the width A, the interval B, and the half pitch between the upper stage terminal 3U and the lower stage terminal 3L. It becomes arrangement of. Also, the width A dimension of about 0.25 mm does not change. Therefore, if the conductor patterns are printed on the substrate 4 at equal intervals C, the receptacle 1 can be surface-mounted on the substrate 4 by soldering the tail portions 3U ′ and 3L ′ to the conductor patterns. .

  However, from the viewpoint of various electrical performances or the strength of mounting the receptacle 1 on the circuit board 4 that can withstand the stress generated when the plug is inserted and removed, the terminals 3U and 3L are attached to the board 4 instead of the surface mounting. It may be desirable to adopt a so-called dip method in which the holes are inserted and fixed by soldering.

  In this dip method, as shown in FIG. 17, it is necessary to prepare as many dip holes 4x as the number of terminals 3U and 3L in the circuit board 4 in which the tips of the terminals 3U and 3L are inserted. These tip holes 4x require a diameter D of about 0.6 mm in order to satisfy the desired performance. The circuit board 4 has a ring-shaped solder having a width of about 0.2 mm around the hole 4x. The attachment conductor pattern E must be printed, and if the gap F between adjacent conductor patterns E is prepared to be about 0.3 mm to prevent a short circuit, the minimum per one terminal is about 1. A mounting pitch G (terminal interval) of 3 mm is required (0.6 mm + 0.2 mm × 2 + 0.3 mm).

  Accordingly, as shown in FIGS. 15A and 15B, the 19 terminals 3U and 3L are bent in a crank shape, and the solder tail portions 3U ′ and 3L ′ at the tips are attached to the substrate 4 by the dipping method. However, as shown in FIG. 15C, since the interval C between the tail portions 3U ′ and 3L ′ is only 0.25 mm, a dip hole 4x of 0.6 mm is formed in the substrate 4 in accordance with this interval C. I can't do it.

  Therefore, as shown in FIG. 16B, the upper stage terminal 3U is extended by a predetermined length in the horizontal direction from the lower stage terminal 3L and then bent at a right angle, and fixed to the substrate 4 formed at the tip of the upper stage terminal 3U. A technique is known in which '' is separated in the horizontal direction from a fixing portion 3L '' to the substrate 4 formed at the tip of the lower terminal 3L (Patent Document 1).

  In addition, since what is described in this document 1 is not a dipping method but a surface mounting method, refer only to the arrangement of the fixing portions 3U ″, 3L ″. According to this, as shown in FIG. 16C, the interval B between the adjacent fixing portions 3U ″, 3U ″ (3L ″, 3L ″) can be expanded to 1.0 mm. It is possible to form the dip hole 4x of 0.6 mm in the substrate according to the above.

JP 2000-77120 A

  However, even in this case, since the interval B between the fixing portions 3U ″, 3U ″ (3L ″, 3L ″) is only 1.0 mm, the required pitch G (1.3 mm or more) in the dip method is used. ) Cannot be satisfied, and dip mounting is not possible.

  Therefore, as shown in the above-mentioned Patent Document 1, the distance between the fixed portions 3U ″ and 3L ″ is formed by bending the terminals 3U and 3L shown in FIG. B needs to be widened in the terminal arrangement direction, and the interval B shown in FIG.

  However, in this case, for example, since there are ten upper terminals 3U, the space for attaching the receptacle 1 to the substrate 4 in the fixing portion 3U ″, that is, the length in the width direction of the receptacle 1 is the minimum, and the interval 1 .3 mm × 10 = 13.0 mm is required.

  Therefore, when a housing for fixing these fixing portions 3U ″ and 3L ″ and a shell surrounding the housing are included, the receptacle 1 has a mounting portion to the circuit board 4 as compared with the plug insertion port 2. Although it becomes wide and the terminals 3U and 3L on the side of the corner plug insertion port 2 are made narrow with a small pitch, the fixing portions 3U ″ and 3L ″ on the side of the mounting portion to the substrate 4 have a large pitch. This goes against the market needs of electronic devices.

  The object of the present invention created in view of the circumstances as described above is that a receptacle having a narrow-pitch structure can be attached to a circuit board by a dip method, and further, its enlargement can be prevented, and further, It is an object of the present invention to provide a receptacle mounting structure in which a printed conductor pattern can be drawn out from a dip hole with a uniform length, and the characteristic impedance of each terminal can be easily matched.

  The present invention is a receptacle mounting structure in which a plurality of signal terminals and ground terminals arranged in a receptacle body are mounted in a plurality of dip holes provided in a circuit board by a dip method, wherein the plurality of signal terminals are: It has a contact portion to which the signal terminal on the plug side is brought into contact with, and a fixing portion to be inserted into the dip hole of the circuit board, and in the arrangement direction of the signal and the ground terminal between the contact portion and the fixing portion. The plurality of ground terminals include a contact portion with which the ground terminal on the plug side is contacted and a fixing portion to be inserted into the dip hole of the circuit board. Including a pitch conversion portion bent in the arrangement direction of the signal and ground terminals between the contact portion and the fixing portion, and the fixing portion of the ground terminal is opposed to the substrate of the receptacle body The signal terminal fixing portion is positioned on the substrate facing surface portion on two straight lines that are parallel to the straight line and sandwich the straight line. A plurality of the ground terminal fixing portions and the signal terminal fixing portions of the ground terminal fixing portions and the signal terminal fixing portions, which are adjacent to each other. A terminal group Y2 having a triangular shape is formed by the fixing portion of the ground terminal, and the interval K between the fixing portions of the two signal terminals in the same terminal group Y2 is made smaller than the interval J, and the terminal group Y2 The interval M between adjacent signal terminal fixing portions for adjacent terminal groups Y2 having the same triangle orientation is made wider than the interval J, and the distance between the two straight lines on which the signal terminal fixing portions are arranged is set. The above spacing on one straight line The signal terminal is included so that the gap K on the other straight line of the two straight lines is included in a direction perpendicular to the two straight lines on a plane including the two straight lines. A fixing portion of the ground terminal and a fixing portion of the ground terminal, and a dip hole is formed in the circuit board corresponding to the arrangement of the fixing portion of the signal terminal and the fixing portion of the ground terminal. The conductor pattern drawn out from the dip hole of the signal terminal having the interval K on the other straight line is connected between the dip holes of the signal terminal having the interval M on one of the two straight lines. It is characterized by being formed by passing through.

  The conductor pattern drawn from the dip hole of the signal terminal having the interval K on the other straight line of the two straight lines may be drawn in a direction orthogonal to the two straight lines.

  According to the receptacle mounting structure of the present invention, it is possible to attach a receptacle having a narrow pitch structure to the circuit board by a dip method, and further prevent the enlargement of the receptacle, and further, a conductor printed on the circuit board. The pattern can be pulled out from the dip hole with the same length, and the characteristic impedance of each terminal can be easily matched.

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

  FIG. 1 is an overall perspective view of a receptacle 1 according to the present embodiment, and FIG. 2 is a plan view of a circuit board 4 on which the receptacle 1 is mounted.

  In FIG. 1, reference numeral 1 denotes a receptacle (receptacle assembly). The receptacle 1 includes a sheet metal shell 5 and a receptacle body 6 surrounded by the shell 5. A plug insertion port 2 is provided in the housing 7 of the receptacle body 6, and a terminal 3 is provided in the insertion port 2.

  The terminal 3 is composed of ten upper terminals 3U arranged on the upper surface of the fitting plate 8 to which a plug (not shown) is fitted, and nine lower terminals 3L arranged on the lower surface of the fitting plate 8, from the horizontal direction. It comes in contact with the terminal of the incoming plug.

  A mounting leg 9 is integrally formed on the shell 5, and the mounting leg 9 penetrates the mounting hole 10 provided in the circuit board 4 shown in FIG. Is done. Returning to FIG. 1, reference numeral 11 denotes a spring portion formed on the shell 2, which plays a role of holding the inserted plug with its spring force, and 12 denotes a lock for fixing the receptacle body 6 to the shell 5. It is a nail.

  FIG. 3 is a schematic front view showing the arrangement of the upper terminal 3U and the lower terminal 3L in the insertion slot 2. Each of the terminals 3U and 3L is actually semi-embedded in the fitting plate 8, but is drawn so as to be easy to understand, and this point is schematic.

  As shown in the drawing, ten upper terminals 3U are arranged on the upper surface of the fitting plate 8 at a predetermined equal interval, and the lower terminals 3L are shifted in phase from the upper terminal 3U on the lower surface of the fitting plate 8. Nine of them are arranged at predetermined equal intervals.

  For example, in the HDMI standard product, the widths A of the terminals 3U and 3L are 0.45 mm, the center distance B of the upper terminal 3U, and the center distance B of the lower terminal 3L are 1.0 mm, respectively. The distance H between the upper terminal 3U and the lower terminal 3L is 0.9 mm.

  These terminals 3U and 3L are assigned terminal numbers from No. 1 to No. 19 from right to left in FIG. Hereinafter, for example, the first terminal is displayed as (No. 1) and the second terminal is displayed as (No. 2) as necessary.

  Each terminal 3U, 3L is a signal terminal (1, 3, 4, 6, 7, 9, 10, 12, 13, 15, 16, 18) and a spare terminal (19) displayed in white, It consists of ground terminals (Nos. 2, 5, 8, 11, 14, 17) indicated by dots. In the above standard, the upper ground terminal 3U (5, 11, 17) is arranged so as to sandwich two signal terminals 3U (1, 3, 7, 9, 13, 15), and the lower ground terminal 3L. (Nos. 2, 8, and 14) are also arranged so as to sandwich two signal terminals 3L (Nos. 4, 6, 10, 12, 16, and 18).

  Each signal terminal (1, 3, 4, 6, 7, 9, 10, 12, 13, 15, 16, 18) and ground terminal (2, 5, 8, 11, 14, 17) are adjacent to each other The terminal group X2 arranged in the shape of a triangle X1 composed of two signal terminals (for example, No. 1 and 3) and one ground terminal (for example, No. 2) is set as one set, and a signal is transmitted for each terminal group X2. . That is, it recognizes as one digital signal using the difference (potential difference) between the voltage applied to the 1st signal terminal 3U (1st) and the voltage applied to the 3rd signal terminal 3U (3rd), Get differential signal.

  If this point is explained by an extremely simplified example, a voltage of +1.0 V is applied to the first signal terminal 3U (No. 1), and a voltage of -1.0 V is applied to the third signal terminal 3U (No. 3). If it is, the potential difference becomes 2.0 V, and this is determined to be ON. On the other hand, if a voltage of + 1.0V is applied to the first signal terminal 3U (No. 1) and a voltage of + 1.0V is also applied to the third signal terminal 3U (No. 3), the potential difference becomes 0.0V. This is determined to be OFF.

  Thus, since the ON-OFF digital signal is obtained using the potential difference, the noise is mixedly applied to the first signal terminal 3U (No. 1) and / or the third signal terminal 3U (No. 3). Even if the signal voltage is distorted, the influence of noise can be minimized by determining the signal as a potential difference.

  Here, the second ground terminal 3L (No. 2) adjusts the electrical characteristics of this one set of signals and brings these two signal terminals 3U (No. 1) and 3U (3) in order to bring the impedance close to a predetermined value. The three terminals 3U (No. 1), 3L (No. 2), and 3U (No. 3) are arranged in the shape of a triangle X1.

  FIG. 4 is an explanatory view (bottom view) showing the arrangement of the fixing portions 14, 15, 16 on the substrate 4 of the terminals 3 U, 3 L in the substrate facing surface portion 13 of the receptacle 1.

  A plurality (six) of the fixing portions 14, 15, and 16 are arranged on the straight line at intervals with the fixing portions 14 of the ground terminals (Nos. 2, 5, 8, 11, 14, and 17) indicated by dots. There are six fixed portions 15 of signal terminals (Nos. 4, 6, 10, 12, 16, and 18) displayed in white on a straight line parallel to the straight line, with a space therebetween. A signal terminal (Nos. 1, 3, 7, 9, 13, 15) and a spare terminal (white) displayed on a straight line parallel to these straight lines with the straight line of the fixed part 14 sandwiched between the straight lines of the fixed part 15 Seventeen (No. 19) fixing portions 16 are arranged at intervals.

  Of these fixed portions 14, 15, and 16, terminals arranged in a triangle Y1 formed by two adjacent signal terminals (for example, Nos. 1 and 3) and one ground terminal (for example, No. 2). The group Y2 is set as one set, and a signal is transmitted for each terminal group Y2. In FIG. 4, the numbers (1 to 19) displayed on the fixing portions 14, 15 and 16 of each terminal 3 correlate with the numbers (1 to 19) displayed on each terminal 3 shown in FIG. The same number indicates the same terminal. Here, since FIG. 4 is mounted with its surface aligned with FIG. 3, the terminal number order is reversed. The triangle Y1 is preferably a regular triangle.

  FIG. 5 is a diagram showing an arrangement interval of the fixing portions 14, 15, 16 of the terminals 3.

  As shown in the figure, the interval J between the terminals of the fixed portion 14 made of a ground terminal is set to an equal interval of 1.75 mm, for example. An interval K between two signal terminals (for example, No. 1 No. 3, No. 4 No. 6) constituting the triangle Y1 is set to 1.5 mm narrower than the interval J. An interval M between adjacent signal terminals (for example, No. 3-7 and No. 6-10) that do not constitute the triangle Y1 is set to 2.0 mm, for example, which is wider than the interval J. That is, the relationship of the interval K <the interval J <the interval M is established.

  Accordingly, in FIG. 5, the first row of fixing portions 15, the second row of fixing portions 14, and the third row of fixing portions 16 are respectively drawn lines N in a direction orthogonal to the terminal parallel direction, that is, Overlap of conductor patterns printed on the circuit board 4 can be easily avoided. In other words, it becomes easy to arrange the pattern on the substrate 4. Specifically, the terminal interval P between the first row of fixing portions 15 and the third row of fixing portions 16 is, for example, 0.25 mm.

  The terminal interval Q between the fixed portion 15 and the fixed portion 14 is, for example, 0.75 mm because the terminal interval is shifted by a half pitch. Similarly, the terminal interval R between the fixed portion 16 and the fixed portion 14 is Since the terminal interval is shifted by a half pitch, for example, it is 0.75 mm. Further, an interval S between the fixing portion 15 and the fixing portion 14 and an interval T between the fixing portion 16 and the fixing portion 14 are each 1.5 mm, for example.

  6 to 8 are perspective views of the terminal 3.

  FIG. 6 shows the terminals 3 </ b> L of the first group 20 constituting the fixing unit 15 in the first row of FIG. 4. These terminals 3L are composed of a horizontal portion 3X and a vertical portion 3Y bent substantially at a right angle from the horizontal portion 3X.

  The horizontal portion 3X has several lower terminal holes 50L provided in the housing 7 of the receptacle body 6 shown in FIG. 9 (the signal terminal portions 4, 6, 10, 12, 16, 18 of the lower terminal 3L in FIG. 3). A press-fit portion 21 that is press-fitted into the contact hole 22, a contact portion 22 that extends forward from the press-fit portion 21 in the axial direction of the terminal hole 50 </ b> L and contacts the plug-side terminal, And a pitch converter 23 provided on the rear side, and an extension 24 provided behind the pitch converter 23. The lengths of the horizontal portions 3X are all L1.

  The vertical part 3Y is provided behind the extension part 24, and has a fixing part 15 that is bent at a substantially right angle with respect to the horizontal part 3X and attached to the substrate 4. The fixed portion 15 is integrated with a holding member 25 whose tip is left during the press working. The vertical portions 3Y all have a length L4.

  FIG. 7 shows the terminals 3U and 3L of the second group 30 constituting the fixing unit 14 in the second row of FIG. These terminals 3U and 3L are similarly composed of a horizontal portion 3X and a vertical portion 3Y.

  The horizontal portion 3X includes the remainder of the lower terminal hole 50L shown in FIG. 9 (the ground terminal portions 2, 8, and 14 of the lower terminal 3L of FIG. 3) and some of the upper terminal holes 50U (the ground of the upper terminal 3U of FIG. 3). A press-fit portion 31 that is press-fitted into the terminals 5, 11, 17 and the spare terminal portion 19), and a contact that extends from the press-fit portion 31 in the axial direction of the terminal holes 50L and 50U and contacts the terminal on the plug side. Part 32, pitch conversion part 33 provided behind press-fitting part 31, and extension part 34 provided behind pitch conversion part 33. The length of each horizontal portion 3X is L2 (L2> L1) except for the 19th terminal at the end, and only the 19th terminal is L3 (L3> L2).

  The vertical portion 3Y is provided behind the extension portion 34, and has a fixing portion 14 that is bent at a substantially right angle with respect to the horizontal portion 3X and attached to the substrate 4. In the vertical portion 3Y, the upper terminal 3U has a length L5, and the lower terminal 3L has a length L4 (L4 <L5). A part of the pitch conversion part 33 and the extension part 34 is incorporated in advance and integrated into a block body 35 made of an insulator by insert molding.

  FIG. 8 shows the terminals 3U of the third group 40 constituting the fixing part 16 in the third row of FIG. Similarly, these terminals 3U include a horizontal portion 3X and a vertical portion 3Y.

  The horizontal portion 3X includes a press-fit portion 41 that is press-fitted into the rest of the upper terminal hole 50U shown in FIG. 9 (the signal terminal portions 1, 3, 7, 9, 13, and 15 of the upper terminal 3U in FIG. 3), and a press-fit portion. 41, a contact portion 42 that extends forward in the axial direction of the terminal hole 50U and contacts a plug-side terminal, a pitch conversion portion 43 provided behind the press-fit portion 41, and a rear portion of the pitch conversion portion 43. Extended portion 44. The lengths of the horizontal portions 3X are all L3.

  The vertical part 3Y is provided behind the extension part 44, and includes a fixing part 16 that is bent at a substantially right angle with respect to the horizontal part 3X and attached to the substrate 4. The fixed portion 16 is integrated with a holding member 45 whose tip is left during pressing. Further, all the vertical portions 3Y have a length L5.

  As shown in FIGS. 6 to 8, when the terminals 3 of the first group 20, the second group 30, and the third group 40 are compared, the length L 3 between the lengths L 1, L 2, and L 3 of each horizontal portion 3 X There is a relationship of> L2> L1.

  For this reason, as shown in FIG. 2, the bending position of the vertical portion 3Y of the third group 40 is farthest from the plug insertion port 2 and the position of the fixing portion 16 is furthest. Similarly, the vertical position of the first group 20 The bending position of the portion 3Y, that is, the position of the fixing portion 15 is closest to the insertion port 2, and the bending position of the vertical portion 3Y of the second group 30, that is, the position of the fixing portion 14 is intermediate.

  As is apparent from FIGS. 6 to 8, the six lower terminals 3L (signal terminals) of the first group 20 inserted into the lower terminal holes 50L of the housing 7 shown in FIG. The six upper terminals 3U (signal terminals) of the third group 40 inserted into the upper terminal hole 50U have a vertical length longer than L4, which is L5. The heights of the tips of the 3L fixing portions 15 and 16 are aligned.

  Further, the seven terminals 3U and 3L (six ground terminals and one spare terminal) of the second group 30 are the four upper terminals 3U having the length of L5 and three L4 (L4 <L5). The lower terminal 3L of the length L5 is inserted into the upper terminal hole 50U, and the lower terminal 3L of the length L4 is inserted into the lower terminal hole 50L. The heights of the tips of the fixing portions 14 of the terminals 3U and 3L are aligned.

  In addition, the pitch converters 23, 33, 43 provided in most of the terminals 3U, 3L are formed so as to extend in the terminal arrangement direction, and the fixing parts 14, 15, 16 on the circuit board 4 are formed. It plays the role of setting the terminal interval of the pinpoint accurately.

  The terminals 3U and 3L are assembled to the housing 7 as follows to form the receptacle body 6.

  FIG. 9 is a perspective view of the housing 7 constituting the receptacle body 6 as viewed from the back side (the side opposite to the plug insertion port 2). The housing 7 is made of an insulating material such as a synthetic resin, and an upper terminal hole 50U and a lower terminal hole 50L that match the terminal arrangement on the plug insertion port 2 side of the standard are formed through the housing 7.

  First, the six lower terminals 3L of the first group 20 shown in FIG. 6 are connected to the signal terminal corresponding portions (Nos. 4, 6, 10, 12, 16, 18 in FIG. 3) of the lower terminal hole 50L. Press fit from the back side. At this time, since each terminal 3L is integrated by the holding member 25 shown in FIG. 6 and the arrangement interval is determined, the workability when press-fitting into each hole 50L is not impaired. The holding member 25 is broken after the terminal 3L is inserted.

  Since the lower terminal 3L of the first group 20 has a short horizontal length L1 as described above, it is aligned at the deepest position of the housing 7, and in the presence of the pitch changing section 23, the lower terminal 3L is properly aligned. The terminal spacing is maintained and the circuit board 4 is oriented, and the fixing portion 15 forms the first row of FIG.

  Next, as shown in FIG. 10, the three lower terminals 3L and the four upper terminals 3U of the second group 30 shown in FIG. 3, 2, 8, 14) and the ground terminal equivalent part (5, 11, 17) and spare terminal equivalent part (19) of the upper terminal hole 50 U, respectively. At this time, since the terminals 3U and 3L are integrated by the block body 35 and the arrangement interval is determined, press-fitting into the holes 50U and 50L can be performed at once.

  In the second group 30, the block body 35 is positioned above the terminal 3L of the first group 20, and the vertical portion 3Y bends in the direction of the circuit board 4 outside the vertical portion 3Y of the first group 20. The fixing part 14 is appropriately separated from the fixing part 15 of the first group 20. Each fixing unit 14 is set to a predetermined terminal interval by the pitch changing unit 33. The fixing unit 14 of the second group 30 constitutes the second row in FIG.

  Subsequently, as shown in FIG. 11, the upper terminal 3U of the third group 40 shown in FIG. 8 is replaced with the signal terminal equivalent portion (Nos. 1, 3, 7, 9, 13, 15 in FIG. 3) of the upper terminal hole 50U. Then, press-fitting from the back side of the housing 7. Since the upper terminal 3U of the third group 40 has the longest horizontal length L3 as described above, the fixing portion 16 is aligned at the outermost position of the housing 7, and the pitch changing portion is also arranged. In the presence of 43, the fixing portion 16 is set to an appropriate terminal interval. The fixing portions 16 of the third group 40 constitute the third row in FIG.

As a result, the dip holes 4x prepared in the circuit board 4 so as to correspond to the fixing portions 14, 15, 16 of the terminal groups 20, 30, 40 are formed in the fixing portions 15 of the first group 20, as shown in FIG. A first row hole 4 _{x1 in} which six holes are arranged, a second row hole 4 _{x2 in} which six holes for the fixing portion 14 of the second group 30 (excluding the 19th terminal) are arranged, a third group 40 and They are arranged in a staggered manner from three rows with a third row hole 4 _{x3 in} which seven holes for the fixing portion 16 of the 19th terminal of the second group 30 are arranged. The distance between the holes 4 _x1 , 4 _x2 , 4 _x3 , that is, the terminal distance between the fixing portions 14, 15, 16 is 1.5 mm or more as described above. The required pitch G (1.3 mm) of 4x is satisfied.

  Next, as shown in FIG. 12, the housing 7 is covered with an upper cover 60 made of an insulating material such as synthetic resin (the same material as the block body 35) from above, so that the terminals 3U and 3L of the third group 40 are covered. Is in close contact with the horizontal portion 3X. Specifically, engaging claws 61 are provided on both sides of the upper cover 60, and these engaging claws 61 engage with recesses 62 formed in the housing 7. Accordingly, the terminals 3U and 3L of the third group 40 are pressed against and closely contact the upper surface of the block body 35 of the second group 30.

Furthermore, as shown in FIG. 13, a lower cover 70 made of an insulating material such as synthetic resin (the same material as the block body 35) is placed on the housing 7 from below the housing 7. More specifically, the lower cover 70 is provided with holes similar to the dip holes 4 _x1 , 4 _x2 and 4 _x3 formed in the substrate 4, and the fixing portions 14, 15 and 16 are inserted through these holes. The lower cover 70 is brought close to the housing 7 and fitted to the housing 7 and further to the upper cover 60.

  Further, engaging claws 71 are provided on both sides of the lower cover 70, and these engaging claws 71 engage with recesses 72 formed in the housing 7. Thereby, the lower cover 70 is brought into close contact with the terminal 3L of the first group 20, and the terminal 3L of the first group 20 is pressed against the lower surface of the block body 35 of the second group 30 to make close contact therewith.

  FIG. 14 is a perspective view showing the front side (plug insertion port 2 side) of the receptacle body 6 in which the terminals 3U and 3L and the covers 60 and 70 are assembled to the housing 7 in this way. Surroundingly becomes the receptacle 1 of FIG.

  The operation of this embodiment will be described.

  According to the mounting structure of the receptacle 1, as shown in FIGS. 6 to 8, the terminals 3U and 3L are divided into three groups 20, 30, and 40, and the length of the horizontal portion 3X of each group 20, 30, and 40 is as follows. Since the pitch converters 23, 33, and 43 are provided, the fixed portions 14, 15, and 16 of the terminals 3U and 3L are connected to the ground terminals of the second group 30 as shown in FIGS. The fixed portions 15 of the signal terminals of the first group 20 and the fixed portions 16 of the signal terminals of the third group 40 are arranged in three rows in a staggered manner across the fixed portion 14.

  In this way, the signal terminal fixing portion 15 and the signal terminal fixing portion 16 are arranged in parallel and at a predetermined interval in a staggered manner across the ground terminal fixing portion 14. , 15 and 16 are widened so as to be compatible with the dip method (1.3 mm or more, 1.5 mm is secured in the illustrated example), and at the same time, the attachment portion of the receptacle 1 to the substrate 4, that is, the terminal fixing portion It can suppress that the dimension of the parallel direction of 14, 15, 16 increases.

  Further, as shown in FIG. 4, a terminal group Y2 composed of two signal terminals (for example, No. 1 and No. 3) and one ground terminal (for example, No. 2) arranged in a triangle Y1 is set as one set. Since the digital signal is transmitted to each terminal group Y2 and the adjacent terminal groups Y2 are separated from each other without overlapping, signal crosstalk can be suppressed.

  Specifically, as shown in FIG. 5, the distance between adjacent terminal groups Y2 is larger than the distance K (K = 1.5 mm) between the signal terminals (No. 1, No. 3, No. 4 and No. 6) in the same terminal group Y2. Since the interval M (M = 2.0 mm) between adjacent signal terminals (No. 3 No. 7, No. 6 No. 10) is wider, the terminal interval M between adjacent terminal groups Y2 is within the same terminal group Y2. This is wider than the terminal interval K, thereby suppressing signal crosstalk.

  Moreover, the one set terminal group X2 of the triangle X1 in the plug insertion port 2 shown in FIG. 3 becomes the one set terminal group Y2 of the triangle Y1 in the fixing portions 14, 15, and 16 shown in FIG. As shown in FIG. 8, the connection member between the adjacent one set of terminal groups X2 to Y2 intersects between the contact portions 22, 32, 42 and the fixing portions 14, 15, 16 It is not. Therefore, signal crosstalk can also be suppressed by this.

  Further, as shown in FIG. 5, since the intervals between the terminal fixing portions 14, 15, 16 are devised, the terminals of the fixing portions 14, 15, 16 are arranged so as not to overlap when viewed from the plug insertion direction. Can be made. Therefore, the conductor pattern N printed around the dip hole 4x formed in the substrate 4 so as to be inserted through the fixing portions 14, 15, and 16 can be easily drawn linearly without being distributed in a complicated manner. This makes it easy to match the characteristic impedance by aligning the lead length of the conductor pattern N and / or shortening the lead length.

  Moreover, the impedance characteristic improves by making the said triangle Y1 into a regular triangle (refer to Japanese translations of PCT publication No. 2003-505826, paragraph 0054, FIG. 16).

  12, the terminals 3U and 3L of the third group 40 are pressed against the upper surface of the block body 35 of the second group 30 by the upper cover 60, and the terminals of the first group 20 as shown in FIG. When 3L is pressed against the lower surface of the block body 35 of the second group 30 by the lower cover 70, each of the terminals 3U and 3L is wrapped in close contact with an insulator, and its characteristic impedance It is possible to precisely perform matching between terminals.

  That is, the fact that the periphery of the terminals 3U and 3L is covered with the same type of insulating material means that the same dielectric constant is obtained, and the characteristic impedance can be adjusted more easily than when the gaps are scattered. is there.

  In the present embodiment, the example of the receptacle 1 of the HDMI standard has been described. However, the present invention is not limited to this, and the present embodiment can be applied to a surface mount receptacle instead of a dip type attachment. In addition, the block body 35 is not limited to insert molding, but may be a structure in which an insulator that is divided into two parts vertically sandwiches the terminals 3U and 3L of the second group 30. Furthermore, in the description of the present embodiment, the dimensions of each member are shown, but this is to help understanding and does not limit the present invention.

It is a perspective view of the receptacle used for the mounting structure of the receptacle which concerns on suitable embodiment of this invention. It is a top view of the circuit board which mounts the receptacle of FIG. It is a typical front view of the plug insertion port of the receptacle of FIG. It is explanatory drawing which shows arrangement | positioning of the fixing | fixed part in the board | substrate opposing surface part of the receptacle of FIG. It is an enlarged view which shows a part of board | substrate opposing surface part of FIG. It is a perspective view which shows the terminal of a 1st group among the terminals with which the receptacle of FIG. 1 was equipped. It is a perspective view which shows the terminal of a 2nd group. It is a perspective view which shows the terminal of a 3rd group. It is a perspective view of the housing in which the terminal of the 1st group was equipped. Furthermore, it is a perspective view of the housing in which the terminal of the 2nd group was mounted | worn. Furthermore, it is a perspective view of the housing in which the terminal of the 3rd group was mounted | worn. Furthermore, it is a perspective view of the housing with which the upper cover was mounted | worn. Furthermore, it is a perspective view of the housing in which the lower cover was attached. It is the perspective view which looked at the receptacle main body from the front side. It is explanatory drawing which shows a prior art example, (a) is the terminal arrangement | positioning figure in a plug insertion port, (b) is a side view of a terminal, (c) is explanatory drawing of the board attachment side of a terminal. It is explanatory drawing which shows another prior art example, (a) is the terminal arrangement | positioning figure in a plug insertion port, (b) is a side view of a terminal, (c) is explanatory drawing of the board attachment side of a terminal. It is explanatory drawing of the dip hole of a board | substrate.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Receptacle 4 Circuit board 4x Dip hole 4x1 1st row hole 4x2 2nd row hole 4x3 3rd row hole 6 Receptacle main body 13 Board | substrate opposing surface part 14 Ground terminal fixing | fixed part 15 Signal terminal fixing | fixed part 16 Signal terminal fixing | fixed part N Conductor Pattern Y2 Terminal group J Spacing between ground terminals K Spacing between signal terminals in the same terminal group M Spacing between signal terminals in adjacent terminal groups

Claims (2)

A receptacle mounting structure in which a plurality of signal terminals and ground terminals arranged in a receptacle body are mounted in a plurality of dip holes provided in a circuit board by a dip method,
The plurality of signal terminals include a contact portion to which the plug-side signal terminal is contacted and a fixing portion to be inserted into the dip hole of the circuit board, and the signal between the contact portion and the fixing portion. And having a pitch conversion part bent in the arrangement direction of the ground terminals,
The plurality of ground terminals have a contact portion with which the ground terminal on the plug side is contacted and a fixing portion to be inserted into the dip hole of the circuit board, and the signal between the contact portion and the fixing portion. And having a pitch conversion part bent in the arrangement direction of the ground terminals,
A plurality of fixing portions of the ground terminal are disposed on the substrate-facing surface portion of the receptacle main body with an equal interval J on a straight line,
The signal terminal fixing portion is positioned on the substrate facing surface portion on two straight lines parallel to the straight line and sandwiching the straight line, and is spaced from the ground terminal fixing portion by a phase difference. A plurality are arranged,
Among these fixed portions of the ground terminal and the fixed portion of the signal terminal, a terminal group Y2 having a triangular arrangement is formed by the fixed portions of the two signal terminals adjacent to each other and the fixed portion of the single ground terminal,
The interval K between the fixed portions of the two signal terminals in the same terminal group Y2 is made narrower than the interval J, and the adjacent signals for the adjacent terminal groups Y2 having the same triangular orientation in the terminal group Y2 The interval M between the fixed portions of the terminals is made wider than the interval J,
The distance M on one of the two straight lines on which the signal terminal fixing portion is arranged is the same as the distance K on the other straight line of the two straight lines. A fixed portion of the signal terminal and a fixed portion of the ground terminal are disposed so as to be included in a plane perpendicular to the two straight lines in a plane including
A dip hole is formed in the circuit board corresponding to the arrangement of the fixed portion of the signal terminal and the fixed portion of the ground terminal, and the signal terminal having the interval K on the other straight line of the two straight lines. The receptacle mounting structure is characterized in that the conductor pattern drawn out from the dip hole is formed so as to pass between the dip holes of the signal terminals with the interval M on one of the two straight lines. .   2. The receptacle according to claim 1, wherein a conductor pattern drawn out from the dip hole of the signal terminal having the interval K on the other of the two straight lines is drawn in a direction orthogonal to the two straight lines. Mounting structure.

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