Shielded connector

Abstract

To provide a shielded connector that can prevent a mounting portion from being left unsoldered.SOLUTION: A shielded connector 10 comprises: an inner conductor 11, 12; an outer conductor 13, 14, 15 that surrounds the inner conductor 11, 12; and a dielectric 16, 17 disposed between the inner conductor 11, 12 and the outer conductor 13, 14, 15. The substrate-side outer shell 14, which is a conductive rigid body, includes: a bottom surface 92; a back surface 93 intersecting with the bottom surface 92; a mounting portion 84 to 87 formed on the bottom surface 92 to be soldered to a circuit board 200; and a recessed part 91 spanning the back surface 93 and the bottom surface 92, and located in a vicinity of the mounting portion 84 to 87 on the bottom surface 92.SELECTED DRAWING: Figure 8

Description

[Technical field]

[0001] The present disclosure relates to a shielded connector. [Background technology]

[0002] The shielded connector described in Patent Document 1 is a coaxial connector that is installed on a circuit board. The shielded connector includes a center contact (hereinafter referred to as the inner conductor), an outer contact and an outer conductor (hereinafter referred to as the outer conductor) that surround the inner conductor, and an insulator (hereinafter referred to as the dielectric) that is disposed between the inner conductor and the outer conductor. The dielectric maintains an insulating state between the inner conductor and the outer conductor. The outer conductor is formed with protruding mounting legs that are inserted into through holes in the circuit board. Solder is filled between the mounting legs and the inner surface of the through hole. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2018-181696 A Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, a mounting section to be soldered to the surface of a circuit board may be formed on the bottom surface of the outer conductor in addition to the mounting legs. In this case, if the mounting section is far from the outer surface (back surface) of the outer conductor, there is a possibility that heat will not be transmitted to the mounting section when reflow soldering is performed, and the solder (solder paste) corresponding to the mounting section will not melt. As a result, the mounting section may remain unsoldered.

[0005] It is therefore an object of the present invention to provide a shielded connector that is capable of preventing the mounting portion from becoming unsoldered. [Means for solving the problem]

[0006] The shielded connector of the present disclosure comprises an inner conductor, an outer conductor surrounding the inner conductor, and a dielectric arranged between the inner conductor and the outer conductor, wherein the outer conductor is a conductive rigid body having a bottom surface, a back surface intersecting the bottom surface, a mounting portion formed on the bottom surface and soldered to a surface of a circuit board, and a recessed portion recessed from the back surface to the bottom surface and arranged on the bottom surface near the mounting portion. Effect of the Invention

[0007] According to the present disclosure, it is possible to provide a shielded connector capable of preventing a mounting portion from becoming unsoldered. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is an exploded perspective view of a shielded connector according to a first embodiment of the present disclosure. [Diagram 2] FIG. 2 is a side cross-sectional view showing a mating state between the shield connector and the mating connector. [Diagram 3] FIG. 3 is an enlarged cross-sectional plan view showing a state in which the press-fitting blade of the outer conductor tube is engaged with the inner circumferential surface of the through-hole of the outer shell. [Figure 4] FIG. 4 is an enlarged cross-sectional view showing a state in which a holding protrusion of an outer conductor tube contacts an inner peripheral surface of a through hole of an outer shell body. [Diagram 5] FIG. 5 is an enlarged cross-sectional view showing a state in which a housing-side holding protrusion of the housing contacts an outer peripheral surface of an outer conductor tube. [Figure 6] FIG. 6 is an enlarged cross-sectional view showing a state in which a contact protrusion of a protruding portion of an outer conductor tube comes into contact with a restricting portion. [Figure 7] FIG. 7 is a cross-sectional view taken along line AA in FIG. [Figure 8] FIG. 8 is an enlarged cross-sectional side view showing the internal structure of the outer conductor at the rear of the shielded connector. [Figure 9] FIG. 9 is a rear view of the shielded connector. [Figure 10]FIG. 10 is an enlarged rear view showing the soldered joint between the mounting portion and the circuit board, which can be seen through the recess. [Figure 11] FIG. 11 is a perspective view illustrating a process of assembling the outer shell body to the housing. [Figure 12] FIG. 12 is a perspective view for explaining the process of assembling the substrate-side shell body to the shell body. [Figure 13] FIG. 13 is a perspective view of the shielded connector. [Figure 14] FIG. 14 is a front view of the housing. [Figure 15] FIG. 15 is a rear view of the housing. [Figure 16] FIG. 16 is a bottom view of the housing. [Figure 17] FIG. 17 is a perspective view of the outer shell. [Figure 18] FIG. 18 is a rear view of the outer shell. [Figure 19] FIG. 19 is an enlarged perspective view of the through-hole of the outer shell. [Figure 20] FIG. 20 is a perspective view of the substrate-side outer shell. [Figure 21] FIG. 21 is a perspective view of the board-side shell body as viewed from a different angle. [Figure 22] FIG. 22 is a perspective view of the outer conductor tube. [Figure 23] FIG. 23 is a rear view of the outer conductor tube. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] [Description of the embodiments of the present disclosure] First, the embodiments of the present disclosure will be listed and described. The shielded connector of the present disclosure comprises: (1) An insulating film comprising an inner conductor, an outer conductor surrounding the inner conductor, and a dielectric disposed between the inner conductor and the outer conductor, the outer conductor having a bottom surface, a back surface intersecting the bottom surface, a mounting portion formed on the bottom surface and soldered to a surface of a circuit board, and a recessed portion recessed from the back surface to the bottom surface and disposed in the vicinity of the mounting portion on the bottom surface.

[0010] The above configuration enables the thermal conduction resistance from the back surface of the outer conductor to the mounting portion to be reduced by the recess, thereby allowing the solder corresponding to the mounting portion to melt and preventing the mounting portion from becoming unsoldered.

[0011] (2) It is preferable that a plurality of the inner conductors are provided, the outer conductor has a back portion having the back surface and a partition portion connected to the back portion, the partition portion being disposed between adjacent inner conductors and defining the recessed portion internally.

[0012] In the above configuration, the recessed portion can be uniformly formed with a constant or nearly constant thickness inside the partition, so that the thermal resistance from the back surface of the outer conductor to the mounting portion can be more effectively reduced. In particular, crosstalk between adjacent inner conductors is suppressed by the partition, and the recessed portion is formed within the thickness of the partition, so that the space efficiency is excellent.

[0013] (3) The mounting portion may be arranged so as to be visible through the recessed portion when viewed from behind the outer conductor.

[0014] According to the above-described configuration, the state of the solder joint between the mounting portion and the circuit board can be confirmed through the recess.

[0015] [Details of the embodiment of the present disclosure] Specific examples of the present disclosure will be described below with reference to the drawings. Note that the present invention is not limited to these examples, but is defined by the claims, and is intended to include all modifications within the meaning and scope of the claims.

[0016] <Embodiment 1> The shielded connector 10 according to the first embodiment is a shielded connector for a board to be installed on a circuit board 200. As shown in Fig. 1 and Fig. 2, the shielded connector 10 includes inner conductors 11, 12, outer conductors 13, 14, 15 surrounding the outer peripheries of the inner conductors 11, 12, dielectrics 16, 17 disposed between the inner conductors 11, 12 and the outer conductors 13, 14, 15, and a housing 18 to which the outer conductors 13, 14, 15 are connected.

[0017] The outer conductors 13, 14, 15 and the inner conductors 11, 12 are conductive members such as metal. The dielectrics 16, 17 and the housing 18 are insulating members such as synthetic resin. The housing 18 is fitted to the mating connector 300. In the following description, the front side of the housing 18 faces the mating connector 300 when fitted. In the up-down direction, the side on which the shielded connector 10 is installed relative to the circuit board 200 is the upper side. The upper side in Figs. 1 and 2 is the upper side. In Figs. 1 and 2, the upper side is indicated by the symbol "U" and the front side is indicated by the symbol "F". In the following description, the up-down direction is synonymous with the height direction, and the up-down direction is synonymous with the axial direction. In addition, the left-right direction is a direction intersecting the up-down direction and the up-down direction, and is synonymous with the width direction.

[0018] (housing) As shown in Fig. 11, the housing 18 has an overall rectangular outer shape and includes a housing main body 19 and a hood 21 protruding forward from the housing main body 19. As shown in Fig. 14 and Fig. 15, the housing main body 19 has multiple insertion holes 22 penetrating in the front-rear direction, four in the first embodiment. Each insertion hole 22 has a circular cross section, is arranged in an upper-lower pair, and is aligned in the width direction.

[0019] 15, a fitting recess 23 is formed in the rear surface of the housing body 19, the fitting recess 23 being recessed except for the central portion of the housing body 19. A plurality of inner recess ribs 24 are formed on the inner peripheral surface of the fitting recess 23.

[0020] The housing main body 19 has a plurality of housing side holding protrusions 108 on the inner peripheral surface of each insertion hole 22. Each housing side holding protrusion 108 has an arc-shaped cross section and is formed so as to extend over the entire length of each insertion hole 22. Each housing side holding protrusion 108 is provided protrudingly at four locations on the inner peripheral surface of the respective insertion hole 22, at equal intervals in the circumferential direction, the upper right, lower right, upper left, and lower left when viewed from the axial direction.

[0021] 2, the front end of the outer conductor tube 15, which will be described later, is inserted into the insertion hole 22 of the housing body 19. As shown in FIG.

[0022] As shown in Fig. 15, a punched recess 26 is formed in the upper end of the housing body 19. The punched recess 26 is formed as a result of the removal of a die (not shown) that forms a housing lock portion 36, which will be described later. In addition, a pair of fitting holes 27 are formed in the upper end of the housing body 19 on both the left and right sides of the punched recess 26. As shown in Fig. 2, the fitting holes 27 penetrate the upper end of the housing body 19 in the front-rear direction and communicate with the inside of the hood 21.

[0023] As shown in Fig. 15, a pair of first locking projections 28 are formed on the rear end of the housing body 19, protruding into each fitting hole 27. Each first locking projection 28 faces the rear surface of the housing body 19 and protrudes toward the fitting recess 23. As shown in Fig. 2, a first connecting projection 43 of the outer shell 13, which will be described later, comes into contact with and is locked to the front surface of the first locking projection 28.

[0024] 15 and 16, the housing main body 19 has a pair of housing side portions 31 that partition the left and right sides of the fitting recess 23. A pair of second locking projections 32 are formed on the inner surface (facing surfaces) of the lower end side of each housing side portion 31 so as to protrude towards the fitting recess 23 side.

[0025] 16, a pair of fitting grooves 34 are formed between each second locking projection 32 and the rear surface of the fitting recess 23. Each fitting groove 34 is open in the up-down direction and inward in the width direction (toward the center of the housing 18) between each second locking projection 32 and the rear surface of the fitting recess 23.

[0026] 13, a second connecting protrusion 76 of the board-side shell body 14, which will be described later, is inserted from below into the fitting groove 34 of the housing body 19. The second connecting protrusion 76 of the board-side shell body 14, which will be described later, comes into pressing contact with the front surface of the second locking projection 32.

[0027] The hood 21 has a rectangular cylindrical shape. As shown in Fig. 2, the mating connector 300 is inserted and fitted into the hood 21. As shown in Fig. 14, the hood 21 is formed with a pair of protruding pieces 35 that protrude forward from the front surface of the housing main body 19. Each of the protruding pieces 35 is inserted into a space 301 (see Fig. 1) formed in the mating connector 300. A housing locking portion 36 that engages the mating connector 300 is formed on the upper wall of the hood 21. The housing locking portion 36 engages the mating connector 300, thereby maintaining the housing 18 and the mating connector 300 in a fitted state.

[0028] (Outer conductor) As shown in Fig. 2, the outer conductor is composed of an outer shell 13, a board-side outer shell 14, and a plurality of outer conductor tubes 15. The outer shell 13 and the board-side outer shell 14 are conductive rigid bodies made of die-cast zinc alloy, aluminum alloy, or the like, and are formed from the same material. The outer shell 13 and the board-side outer shell 14 are assembled together to form a single housing. The outer conductor tube 15 is a press-formed body formed by bending a metal plate made of a material, such as brass, that is harder than the outer shell 13 and the board-side outer shell 14.

[0029] 17 and 18, the outer shell body 13 has an upper part 37 that is rectangular in plan view, and a pair of side parts 38 that protrude downward from both the left and right ends of the upper part 37. A fitting receiving part 39 is formed between the upper part 37 and each side part 38. The fitting receiving part 39 is open downward and rearward on the outer shell body 13.

[0030] As shown in Fig. 18, the outer shell body 13 has mounting portions 41 that are connected to the top 37 and each side portion 38 and have a padded shape on the fitting receiving portion 39 side. The mounting portions 41 close the front surface of the outer shell body 13. As shown in Fig. 17, a plurality of tubular portions 42 are formed protruding from the front surface of the outer shell body 13. The tubular portions 42 are arranged side by side on both the top and bottom sides and in the width direction. The tubular portions 42 are connected to each other vertically and horizontally and have a shape that can fit into the fitting recess 23.

[0031] The outer shell 13 has a pair of first connecting projections 43 that project upward from each upper cylindrical portion 42. The upper end side of each first connecting projection 43 projects upward beyond the upper portion 37.

[0032] A press-fit recess 45 is formed at the lower end of the front surface of the outer shell body 13. The press-fit recess 45 is disposed between the lower cylindrical portions 42. Specifically, the press-fit recess 45 is defined by the lower cylindrical portions 42 and a connecting portion connecting the lower cylindrical portions 42 in the width direction, and is open forward and downward. The rear of the press-fit recess 45 is closed by the front surface of the outer shell body 13. The press-fit recess 45 has a dovetail shape whose width gradually increases from the lower end on the opening side toward the upper end on the inner side. A press-fit protrusion 75 (described later) of the board-side outer shell body 14 is press-fitted into the press-fit recess 45 (see FIG. 8).

[0033] As shown in Fig. 18, the mounting portion 41 has a plurality of through holes 46 penetrating in the front-rear direction. Each through hole 46 has a circular cross section, and as shown in Fig. 17, a front end portion is formed inside each tubular portion 42. When the outer shell body 13 and the housing 18 are connected, each tubular portion 42 fits into the fitting recess 23 of the housing 18, and as shown in Fig. 2, the through holes 46 of the mounting portion 41 and the insertion hole 22 of the housing main body 19 communicate in the front-rear direction.

[0034] As shown in Fig. 18, an engagement protrusion 47 is formed in the widthwise center of the outer shell 13, protruding toward the fitting receiving portion 39. The engagement protrusion 47 is plate-shaped along the up-down direction in the mounting portion 41, and is disposed between adjacent through-holes 46 in the widthwise direction. The lower end of the engagement protrusion 47 is stepped (see Fig. 8). The upper through-holes 46 in the mounting portion 41 correspond to the stepped shape of the lower ends of the engagement protrusion 47, and are formed longer rearward than the lower through-holes 46 (see Fig. 2).

[0035] As shown in Fig. 18, each through hole 46 opens into an end face 109 that faces rearward within the fitting-receiving portion 39. As shown in Fig. 19, the end face 109 into which the upper through holes 46 open is located rearward of the end face 109 into which the lower through holes 46 open.

[0036] As shown in FIG. 19, a pair of cut grooves 111 are formed in the end face 109 of the mounting portion 41, the cut grooves 111 being cut forward from the lower left and right side edges of the rear opening edge of the through hole 46. A groove portion 51, which will be described later, is disposed between each of the cut grooves 111. The outer shell body 13 has a stopper portion 112 that closes the front end of each cut groove 111 in each through hole 46. The stopper portion 112 is the front surface of each cut groove 111 and is disposed along the up-down direction, similar to the end face 109. The outer shell body 13 also has a restricting portion 113 that closes the widthwise outer side of each cut groove 111 in each through hole 46. The restricting portion 113 is a part of the inner surface of the side portion 38, is disposed along the front-rear direction, and has a front end that intersects with the stopper portion 112. The stopper portion 112 is capable of abutting and stopping the protrusion portion 95 of the outer conductor tube 15 described later (see Figure 7), and the regulating portion 113 is capable of regulating the rotation of the outer conductor tube 15 within the through hole 46 (see Figure 6).

[0037] As shown in Fig. 18, a plurality of grooves 51 are formed in the outer shell 13. Each groove 51 is formed by cutting out the lower part (including the stepped part) of the peripheral wall surrounding each through hole 46 in the mounting portion 41, and is further recessed into the inner surface of the rear end part of the upper part 37. Each groove 51 is disposed for each through hole 46, and is open downward and rearward on the fitting receiving portion 39 side. Each groove 51 in the lower part of the peripheral wall opens to the end face 109.

[0038] 12 and 13, four legs 54 are formed to protrude downward from the front and rear ends of the lower end of each side portion 38. The legs 54 are disposed corresponding to the four corners of the lower end of the outer shell 13. As shown in FIGS. 2 and 9, the legs 54 are positioned and inserted into the fixing holes 201 of the circuit board 200.

[0039] As shown in Fig. 18, a pair of recesses 56 are formed at the rear lower end of the inner surface (which is also the inner surface of the fitting receiving portion 39) of each side portion 38. Each recess 56 is open to the inside in the width direction (the side where each side portion 38 faces each other) and to the rear. As shown in Fig. 9, each recess 56 is fitted with a protrusion 72 of the board-side shell body 14, which will be described later.

[0040] 12 and 13, the board-side shell body 14 is attached to the shell body 13 from below. As shown in Fig. 21, the board-side shell body 14 has a bottom portion 59 that is rectangular in bottom view, a back portion 61 that rises from the rear end of the bottom portion 59, a rising portion 62 that rises from a position near the rear end of the bottom portion 59, and a partition portion 63 that connects the back portion 61 and the rising portion 62 at the center in the width direction of the bottom portion 59. The back portion 61, the rising portion 62, and the partition portion 63 are configured as a fitting portion that can fit into the fitting receiving portion 39 of the shell body 13.

[0041] The back portion 61 and the rising portion 62 are shaped like rectangular vertical walls when viewed from the rear. As shown in Fig. 9, the back portion 61 closes the rear surface of the outer shell body 13. As shown in Figs. 20 and 21, the protruding dimension of the rising portion 62 is smaller than the protruding dimension of the back portion 61. The height difference between the upper end surface of the rising portion 62 and the upper end surface of the back portion 61 corresponds to the height difference of the stepped shape of the mounting portion 41. The upper end surface of the rising portion 62 and the upper end surface of the partition portion 63 are continuous at the same height.

[0042] 21, a groove 52 is formed in the widthwise center of the substrate-side shell 14. The groove 52 is formed as a stepped continuous recess in the upper and front surfaces of the back portion 61, the partition portion 63, the rising portion 62 and the bottom portion 59.

[0043] The groove 52 has a plurality of contact ribs 65 extending in the up-down direction on both sides facing each other in the width direction. Each contact rib 65 has an arc-shaped cross section. A large number of contact ribs 65 are formed at intervals in the front-rear direction on both sides of the groove 52 corresponding to the back portion 61, the partition portion 63, the rising portion 62 and the bottom portion 59.

[0044] A pair of engaging protrusions 49 are formed on each of the upper surfaces of the back portion 61, the rising portion 62 and the bottom portion 59, on both left and right sides of the groove portion 52. Contact ribs 66 extending in the vertical direction are also formed on both side surfaces of each engaging protrusion 49.

[0045] When the shell body 13 and the board-side shell body 14 are assembled, the lower end of the engagement protrusion 47 of the shell body 13 fits into the groove 52 of the board-side shell body 14 (see FIG. 8). As shown in FIG. 9, each engagement protrusion 49 of the board-side shell body 14 fits into each groove 51 of the shell body 13. Each contact rib 65, 66 of the board-side shell body 14 contacts the outer surface of the engagement protrusion 47 of the shell body 13 and the inner surface of each groove 51. Furthermore, as shown in FIG. 20 and FIG. 21, a contact rib 67 is formed on both side surfaces of the back portion 61 and the rising portion 62, extending long in the vertical direction. This contact rib 67 contacts the inner surface of each side portion 38 of the shell body 13 (see FIG. 9).

[0046] As shown in Fig. 20, the board-side shell body 14 has a pair of protrusions 72 at the lower rear ends of both side surfaces. Each protrusion 72 has an arc-shaped cross section extending in the front-to-rear direction on both side surfaces of the bottom portion 59. The front end of each protrusion 72 is integrally connected to the lower end of each contact rib 67 formed on both side surfaces of the back portion 61. When the shell body 13 and the board-side shell body 14 are assembled, as shown in Fig. 9, the protrusions 72 fit into the lower portion of the recessed portion 56, and the lower surface of the protrusion 72 comes into contact with the lower surface of the recessed portion 56 in a compressed or crushed state.

[0047] 20 and 21, a press-in protrusion 75 is formed to protrude from the widthwise center of the upper surface of the front end of the bottom portion 59. The press-in protrusion 75 is columnar and has a constant cross-sectional shape in the vertical direction except for the upper end. A pair of contact ribs 68 extending in the vertical direction are also formed on both side surfaces of the press-in protrusion 75. Each contact rib 68 contacts the inner surface of the press-in recess 45.

[0048] The board-side shell 14 has a pair of second connecting protrusions 76 that protrude outward in the width direction from the front ends of both side surfaces of the bottom 59. A pressing rib 78 that has an arc-shaped cross section and extends in the vertical direction is formed on the rear surface of each second connecting protrusion 76. The pressing rib 78 of the second connecting protrusion 76 comes into pressing contact with the front surface of the second locking projection 32 (see FIG. 13).

[0049] As shown in FIG. 21, a plurality of openings 81 are formed in the board-side shell 14. Each opening 81 has a rectangular cross section, and is disposed on both the left and right sides of the groove 52, and at the front and rear positions in the board-side shell 14. Each front opening 81 is disposed in front of the rising portion 62 and behind the engagement protrusion 49 formed on the bottom 59, and penetrates the bottom 59 to open to the bottom surface 92 (the surface facing downward, see FIG. 12). Each rear opening 81 is partitioned by the back portion 61, the rising portion 62, and the partition portion 63, and also penetrates the bottom 59 to open to the bottom surface 92. The partition portion 63 separates the rear openings 81 adjacent to each other in the width direction.

[0050] 2, the dielectrics 16, 17 are fitted into the openings 81. The inner conductors 11, 12 attached to the dielectrics 16, 17 cause a board connection part 107, which will be described later, to protrude downward from the bottom surface 92 of the bottom part 59 through the openings 81. The board connection part 107 is inserted into a connection hole 202 formed in the circuit board 200, and is electrically connected to a conductive part (not shown).

[0051] 13, a plurality of mounting portions 84-87 are formed on the bottom surface 92 of the bottom portion 59 so as to surround the periphery of each opening 81. Each of the mounting portions 84-87 slightly protrudes downward from the bottom surface 92 of the bottom portion 59. The lower end surface of each of the mounting portions 84-87 is flat, and is electrically connected to a conductive portion for grounding of the circuit board 200 by soldering.

[0052] Specifically, each mounting portion has a front mounting portion 84 extending in the left-right direction in front of each front opening 81, side mounting portions 85 extending in the front-rear direction on both the left and right sides of each opening 81, and a shared mounting portion 86 extending in the left-right direction between the front opening 81 and the rear opening 81. In addition, complementary mounting portions 87 are formed as mounting portions on both the left and right sides of a recessed portion 91 described later.

[0053] An evacuation recess 88 is recessed into the rear end of the bottom surface 92 of the bottom portion 59. The rear end of the evacuation recess 88 opens into a rear surface 93 that intersects with the bottom surface 92 of the substrate-side shell body 14. The evacuation recess 88 has a rectangular cross section, communicates with the opening 81 at the front, and is open to the rear and downward, while its upper portion is closed by the back portion 61.

[0054] The recess 88 is disposed above the surface wiring (not shown) of the circuit board 200. The recess 88 prevents the board-side shell 14 from being electrically connected to the surface wiring.

[0055] The complementary mounting portions 87 correspond to the respective retraction recesses 88 and are formed so as to extend in the front-to-rear direction along the inner side edges of the respective retraction recesses 88 that are located toward the widthwise center of the bottom portion 59 .

[0056] As shown in Fig. 13, a recess 91 is recessed in the widthwise center of the back surface 93 of the board-side shell body 14. As shown in Fig. 9, the recess 91 is formed in the back surface 93 of the board-side shell body 14 so as to extend in the vertical direction from the bottom portion 59 to the back portion 61. The recess 91 is recessed across the bottom surface 92 and the back surface 93 of the board-side shell body 14, and is open rearward and downward.

[0057] The recessed portion 91 penetrates the back portion 61 and is defined inside the partition portion 63. That is, the recessed portion 91 is formed within the thickness range of the partition portion 63. As shown in FIG. 8, the innermost surface 126 and the inner upper surface 127 of the recessed portion 91 are arranged parallel to the groove portion 52 inside the groove portion 52. The portion between the recessed portion 91 and the groove portion 52 in the partition portion 63 (see symbol a in FIG. 8) is formed with a uniform thickness or a thickness close to uniform from the back portion 61 to the bottom portion 59. The thickness of the partition portion 63 is reduced at the portion corresponding to the recessed portion 91. As shown in FIG. 13, the complementary mounting portion 87 is arranged on the bottom surface 92 of the bottom portion 59 so as to be sandwiched between the retreat recess 88 and the recessed portion 91 in the width direction. The side mounting portion 85 located on the inner side in the width direction (the center side in the width direction) is arranged so as to be visible through the recessed portion 91 when viewed from behind the board-side shell body 14, as shown in FIGS.

[0058] The outer conductor tube 15 is integrally formed by bending a conductive metal plate, and is formed to be thinner than both the outer shell 13 and the substrate-side outer shell 14. As shown in Fig. 22, the outer conductor tube 15 has a cylindrical tubular connection part 94 extending in the front-rear direction, and a pair of protrusions 95 protruding downward from both the left and right sides of the rear end part of the tubular connection part 94. The tubular connection part 94 is formed by bending a plate material into a circle, and as shown in Fig. 23, has a butting edge 116 at the lower end where both circumferential ends are butted together.

[0059] Each protrusion 95 has a tapered shape that widens downward from both the left and right ends of the upper half of the rear end of the cylindrical connection part 94. Moreover, the protrusion 95 has a rectangular shape in a side view. An embossed contact protrusion 117 that bulges outward is formed in a portion near the lower end of each protrusion 95. The contact protrusion 117 has an arc-shaped cross section.

[0060] Further, a press-fitting blade 118 is formed at the front-rear intermediate portion of the cylindrical connection part 94. The press-fitting blades 118 are formed in pairs at both left and right ends (both radial ends) of the cylindrical connection part 94, and are formed in a shape that bulges outward in front of a slit 119 along the up-down direction (which is also the circumferential direction of the cylindrical connection part 94). Specifically, as shown in FIG. 22, the press-fitting blades 118 are formed in an arc-shaped cross section, and in a triangular shape in which the up-down dimension decreases toward the front in a side view. As shown in FIG. 3, each press-fitting blade 118 is pressed into the inner peripheral surface of the through hole 46 of the outer shell body 13 and locked therein.

[0061] Further, inner protrusions 120 are formed at the front-rear intermediate portion of the cylindrical connection part 94. As shown in Fig. 23, each inner protrusion 120 is formed in a pair at both the left and right ends of the cylindrical connection part 94, and is formed in a shape that bulges inwardly behind a slit 119 along the up-down direction (which is also the circumferential direction of the cylindrical connection part 94). Each inner protrusion 120 is engaged with the outer surfaces of the dielectrics 16, 17 arranged inside the cylindrical connection part 94 (see Fig. 3).

[0062] 22, the tubular connecting portion 94 has a plurality of holding protrusions 121 formed at a position rearward of the press-fitting blade 118 and forward of the protruding portion 95. Each holding protrusion 121 has an embossed shape that bulges outward from the tubular connecting portion 94, and is formed so as to extend with a constant cross-sectional shape (arcuate) in the front-rear direction.

[0063] As shown in FIG. 23, the four holding protrusions 121 are provided at regular intervals on the outer peripheral surface of the cylindrical connection part 94. The protrusion dimension of the press-fitting blade 118 from the outer peripheral surface of the cylindrical connection part 94 is larger than that of the holding protrusions 121. When the cylindrical connection part 94 is viewed from the axial direction (the front or rear, in the thickness direction of the paper surface of FIG. 23), the holding protrusions 121 are arranged to be shifted from the press-fitting blades 118 in the circumferential direction. Specifically, the holding protrusions 121 are arranged at four locations, the upper right, lower right, upper left, and lower left, which are the upper, lower, left, and right parts when the cylindrical connection part 94 is viewed from the front. The holding protrusion 121 at the lower right in FIG. 23 is arranged near the butting edge 116 of the cylindrical connection part 94. As shown in FIG. 4, the holding protrusions 121 contact the inner peripheral surface of the through hole 46 of the outer shell body 13.

[0064] The outer conductor tube 15 is inserted into the through hole 46 of the outer shell body 13 from the rear. A plurality of outer conductor tubes 15 (four in the case of the first embodiment) are provided corresponding to the respective through holes 46, and each is formed in the same shape as shown in Fig. 1. The outer conductor tube 15 is held in the outer shell body 13 in a non-dislodging state by each protrusion 95 being abutted against the stopper portion 112 and each press-fitting blade 118 being engaged with the inner peripheral surface of the through hole 46 (see Fig. 7). The front end of the cylindrical connection portion 94 of the outer conductor tube 15 is disposed in the shielded connector 10 so as to protrude from the cylindrical portion 42 of the outer shell body 13 into the hood 21 (see Fig. 2).

[0065] (Dielectric) As shown in Fig. 1, the dielectrics 16, 17 have a cylindrical main body 101 extending in the front-rear direction, and an extended portion 102 protruding downward from the rear end of the main body 101, and are formed in an L-shape when viewed from the side. Horizontal portions 104 (described later) of the inner conductors 11, 12 are inserted into the main body 101. A guide groove 103 (described later) is formed on the rear surface of the extended portion 102 and extends in the up-down direction. The guide groove 103 is open to the rear. Extended portions 105 (described later) of the inner conductors 11, 12 are fitted into the guide groove 103 from the rear (see Figs. 2 and 7).

[0066] The main body portions 101 of the dielectrics 16, 17 are disposed in the through-holes 46 of the outer shell 13 while being inserted into the cylindrical connecting portion 94 of the outer conductor tube 15. The lead-out portions 102 of the dielectrics 16, 17 are inserted into the openings 81 of the substrate-side outer shell 14.

[0067] As shown in Fig. 1, the dielectric is composed of two types of dielectrics, long and short, 16 and 17. The long dielectric 16 is held by the outer conductors 13, 14 and 15 with the main body 101 placed in the upper through-hole 46 and the lead-out portion 102 inserted in the rear opening 81. The short dielectric 17 is held by the outer conductors 13, 14 and 15 with the main body 101 placed in the lower through-hole 46 and the lead-out portion 102 inserted in the front opening 81.

[0068] (Inner conductor) As shown in FIG. 1, the inner conductors 11 and 12 are pin-shaped terminals, and have a horizontal portion 104 extending in the front-rear direction and an extending portion 105 extending downward from the rear end of the horizontal portion 104, and are formed in an L-shape when viewed from the side. The horizontal portion 104 has a mating connection portion 106 that protrudes forward from the main body portion 101 when inserted into the main body portion 101 of the dielectrics 16 and 17. The mating connection portion 106 protrudes into the hood 21 as shown in FIG. 2, and is electrically connected to the mating inner conductor 303 when the housing 18 and the mating connector 300 are fitted together. The extending portion 105 has a board connection portion 107 that protrudes downward from the drawing portion 102 when inserted into the guide groove 103 of the drawing portion 102 of the dielectrics 16 and 17. The board connection portion 107 is formed to have a smaller diameter than the upper portion of the extending portion 105.

[0069] 1, the inner conductor is composed of two types of inner conductors, long and short, 11 and 12. The long inner conductor 11 is held by a long dielectric 16. The short inner conductor 12 is held by a short dielectric 17.

[0070] (Assembly method and function of shielded connector) First, the horizontal portions 104 of the inner conductors 11, 12 are inserted from the rear into the main body portions 101 of the corresponding dielectrics 16, 17 and held therein. The extending portions 105 of the inner conductors 11, 12 are exposed and positioned on the rear side of the drawn-out portion 102 while being inserted into the guide grooves 103. Next, the main body portions 101 of the dielectrics 16, 17 are inserted from the rear into the cylindrical connecting portions 94 of the corresponding outer conductor tubes 15 and held therein. Then, the cylindrical connecting portions 94 of the corresponding outer conductor tubes 15 are inserted from the rear into the through holes 46 of the corresponding outer shell 13 and held therein.

[0071] At the end of the insertion process of the cylindrical connection part 94, each protrusion 95 enters each cut groove 111 from the rear, and the contact protrusion 117 of each protrusion 95 slides along the restriction part 113. At this time, each protrusion 95 is elastically deformed inward in the width direction (toward the center of the width direction of the outer conductor tube 15) with the connection part with the cylindrical connection part 94 as a fulcrum.

[0072] When the cylindrical connection portion 94 is properly inserted into the through hole 46 of the outer shell body 13, the front end (plate thickness portion) of each protrusion 95 abuts against the stopper portion 112 of the outer shell body 13 (see FIG. 7), restricting further insertion of the outer conductor tube 15. Each protrusion 95, while remaining in an elastically deformed state, firmly contacts each contact protrusion 117 with the restricting portion 113 (see FIG. 6). The outer conductor tube 15 is assembled to the outer shell body 13 in a state in which rattle is restricted by the locking action of the protrusion 95 with respect to the outer shell body 13 and the holding action of the press-fitting blade 118 and each holding protrusion 121, which will be described later.

[0073] In the case of the first embodiment, since the outer conductor tube 15 is assembled to the outer shell body 13 from the rear, it is possible to easily form a structure for preventing the outer conductor tube 15 from slipping out from the front by the stopper portion 112. In particular, the direction in which the outer conductor tube 15 is inserted into the outer shell body 13, the direction in which the inner conductors 11, 12 are inserted into the dielectrics 16, 17, the direction in which the dielectrics 16, 17 are inserted into the outer conductor tube 15, and, as will be described later, the direction in which the outer shell body 13 is connected to the housing 18 are all unified in the same rearward direction, which provides excellent assembly properties.

[0074] In addition, in a state where the cylindrical connection portion 94 is properly inserted into the through hole 46 of the outer shell body 13, the press-fitting blades 118 of the outer conductor tube 15 are engaged so as to bite into both left and right end portions of the inner peripheral surface of the through hole 46 of the outer shell body 13 in a press-fitted state (compressed or crushed state) (see FIG. 3). In addition, the holding protrusions 121 of the outer conductor tube 15 firmly contact the upper, lower, left and right portions of the inner peripheral surface of the through hole 46 of the outer shell body 13 behind the engaging positions of the press-fitting blades 118 (see FIG. 4).

[0075] As shown in FIG. 11, the front end of the cylindrical connection part 94 is disposed so as to protrude forward from the cylindrical part 42 of the outer shell body 13. If the holding protrusions 121 were not formed on the cylindrical connection part 94, when an external force acts on the front end of the cylindrical connection part 94 from above or below, the cylindrical connection part 94 would be pressed in the direction of the external force, and there is a concern that the axis of the cylindrical connection part 94 would be misaligned. In this regard, in the case of the first embodiment, a plurality of holding protrusions 121 are formed on the cylindrical connection part 94 in addition to the press-fitting blade 118, and the holding protrusions 121 are disposed at intervals in the circumferential direction at each of the upper, lower, left, and right parts of the cylindrical connection part 94. Then, since the holding protrusions 121 are held in contact with the inner circumferential surface of the through hole 46 of the outer shell body 13, they can resist an external force from above or below, and the axis of the cylindrical connection part 94 can be prevented from being misaligned.

[0076] Next, the outer shell body 13 is connected to the housing 18 from the rear (see FIG. 11). In the process of connecting the outer shell body 13, the first connecting protrusion 43 climbs over the first locking projection 28 and engages with the fitting hole 27. When the connection of the outer shell body 13 is completed, the tube portion 42 comes into contact with the inner surface of the fitting recess 23, the connecting operation of the outer shell body 13 is stopped, and the rear surface of the first connecting protrusion 43 and the front surface of the first locking projection 28 come into contact with each other (see FIG. 2).

[0077] The front end of the cylindrical connection part 94 is inserted into the insertion hole 22 of the housing 18 from the rear. The housing side holding protrusions 108 come into contact with the outer peripheral surface of the front part of the cylindrical connection part 94 in the insertion hole 22 in a compressed or crushed state (see FIG. 5). The housing side holding protrusions 108 come into contact with the outer peripheral surface of the cylindrical connection part 94 from the top, bottom, left and right sides. As a result, the cylindrical connection part 94 is held on the outer shell body 13 by the press-fitting blades 118 and the holding protrusions 121, and is also held on the housing 18 by the housing side holding protrusions 108 located on the opposite side (front side) of the holding protrusions 121 across the press-fitting blades 118. Therefore, in the first embodiment, it is possible to more reliably prevent the axis of the cylindrical connection part 94 from being misaligned. As a result, it is possible to realize a state in which the axis of the cylindrical connection part 94 is aligned with the axis of the mating outer conductor 311 (see FIG. 2).

[0078] Next, the board-side shell body 14 is assembled to the shell body 13 from below (see FIG. 12). At the end of the assembly process of the board-side shell body 14, the protrusion 72 interferes with the side portion 38, and the side portion 38 elastically deforms somewhat outward in the width direction with the upper portion 37 as a fulcrum. When the assembly of the board-side shell body 14 is completed, the engagement protrusion 47 of the shell body 13 comes into contact with the bottom surface 92 of the groove portion 52 of the board-side shell body 14, etc., and the assembly operation of the board-side shell body 14 is stopped, and a restoring force acts on the side portion 38, and the protrusion 72 is fitted into the recess 56 (see FIG. 9). Here, since a lap margin is provided between the protrusion 72 and the recess 56, the protrusion 72 can contact the inner surface of the recess 56 and maintain the contact state. The fitted state of the recess 56 and the protrusion 72 can be seen when viewed from the back.

[0079] Furthermore, when assembly of the board-side shell body 14 is complete, the press-in projection 75 fits into the press-in recess 45 from below, and each contact rib 68 of the press-in projection 75 comes into contact in a compressed or crushed state with the inner surface of the opening side of the press-in recess 45. Therefore, the board-side shell body 14 is stably held in a state where it is restricted from tilting in the front-to-rear direction relative to the shell body 13.

[0080] Furthermore, when assembly of the board-side shell body 14 is completed, the second connecting protrusion 76 is fitted into the fitting groove 34 of the housing 18 (see Figure 13), and the pressing rib 78 of the second connecting protrusion 76 contacts the front surface of the second locking projection 32, thereby holding the second connecting protrusion 76 in a non-removable state relative to the housing 18.

[0081] Furthermore, when the assembly of the board-side shell body 14 is completed, the back portion 61, the rising portion 62, and the partition portion 63 are fitted into the fitting receiving portion 39 of the shell body 13, and each of the engagement protrusions 49 of the board-side shell body 14 is fitted into each of the grooves 51 of the shell body 13 (see FIG. 9), and the engagement protrusion 47 of the shell body 13 is fitted into the groove 52 of the board-side shell body 14. Each of the contact ribs 65-68 of the board-side shell body 14 contacts the corresponding surfaces such as the inner surface of each of the grooves 51 of the shell body 13 and the outer surface of the engagement protrusion 47 in a compressed or crushed state. As a result, a large number of electrical connection structures (contact structures) are formed between the shell body 13 and the board-side shell body 14 via each of the contact ribs 65-68. Therefore, the reliability of the electrical connection between the shell body 13 and the board-side shell body 14 can be improved.

[0082] Each of the contact ribs 65-68 contacts the corresponding surface of the outer shell 13 along the vertical direction. Therefore, even if a vertical vibration force is applied to the outer shell 13 and the substrate-side outer shell 14, the contact state of each of the contact ribs 65-68 can be maintained. In particular, in the case of the first embodiment, each of the contact ribs 65-68 is formed in large numbers on the inner surface of each groove 52 of the substrate-side outer shell 14 and on the outer surface of each engagement protrusion 49, and each engagement protrusion 49 of the substrate-side outer shell 14 is fitted into each groove 51 of the outer shell 13, and the engagement protrusion 47 of the outer shell 13 is fitted into the groove 52 of the substrate-side outer shell 14, so that each of the contact ribs 65-68 can reliably contact the corresponding surface of the outer shell 13.

[0083] 2, when the outer shell 13 and the board-side outer shell 14 are assembled, the rising portion 62 is arranged to cover the outer conductor tube 15, the short dielectric 16, and the short inner conductor 12 arranged in the lower through-hole 46 from behind. The back portion 61 is arranged to cover the outer conductor tube 15, the long dielectric 17, and the long inner conductor 11 arranged in the upper through-hole 46 from behind. The drawn-out portions 102 of the inner conductors 11, 12 are surrounded all around by the outer conductors 13, 14, 15, except for the board connection portion 107. This completes the assembly of the shielded connector 10.

[0084] Next, the shielded connector 10 is placed on the surface of the circuit board 200 (see Fig. 2 and Figs. 8 to 10). The board connection parts 107 of the inner conductors 11 and 12 are inserted into the connection holes 202 of the circuit board 200, the legs 54 of the outer shell 13 are inserted into the fixing holes 201 of the circuit board 200, and the mounting parts 84 to 87 are placed on the lands of the conductive parts of the circuit board 200. In this state, reflow soldering is performed, so that the board connection parts 107 of the inner conductors 11 and 12 are solder-connected to the conductive parts for signals in the connection holes 202 of the circuit board 200. Also, the legs 54 are solder-fixed to the fixing holes 201, and the mounting parts 84 to 87 are solder-connected to the conductive parts for ground.

[0085] Each of the inner conductors 11, 12 is surrounded by a plurality of mounting portions 84-87 on the bottom surface 92 of the board-side shell 14. This suppresses crosstalk between adjacent inner conductors 11, 12 in the width direction and the front-rear direction. Also, a recess 88 is formed in the board-side shell 14, recessed away from the surface wiring of the circuit board 200, which prevents the board-side shell 14 from being electromagnetically coupled to the surface wiring.

[0086] When reflow soldering is performed, the reflow heat is transferred from the outer surface of the board-side shell 14 to the mounting parts 84-87, and the solder (paste solder) corresponding to the mounting parts 84-87 is melted. In the case of the first embodiment, the board-side shell 14 has a recess 91 extending from the rear surface 93 of the back part 61 to the bottom surface 92, and the thickness of the partition part 63 is reduced, so that the thermal conduction resistance can be reduced and the heat transfer to the mounting parts 84-87 is excellent. In particular, the recess 91 extends to the vicinity of the side mounting parts 85 on the bottom surface 92 of the board-side shell 14, so that the side mounting parts 85 can be effectively prevented from becoming unsoldered.

[0087] In addition, in this embodiment 1, as shown in Figure 10, the solder joint state of the side mounting portion 85 to the conductive portion of the circuit board 200 (see the solder fillet indicated by symbol b in Figure 10) can be confirmed through the opening on the back surface 93 of the recessed portion 91.

[0088] [Another embodiment of the present disclosure] The above-described first embodiment disclosed herein should be considered as illustrative in all respects and not restrictive. In the first embodiment, the shell body is configured as a separate body from the substrate-side shell body. However, according to other embodiments, the shell body may be formed integrally with the substrate-side shell body. In the above embodiment 1, the protruding portion of the outer conductor tube has a contact protrusion. However, in other embodiments, the protruding portion does not need to have a contact protrusion. In this case, the side surface (plate surface) of the protruding portion can be brought into contact with the restricting portion of the outer shell. In the above-mentioned embodiment 1, the housing side holding protrusion is formed on the housing. However, according to another embodiment, the housing side holding protrusion does not have to be formed on the housing. In this case, it is preferable to form a holding protrusion corresponding to the housing side holding protrusion on the outer circumferential surface of the outer conductor tube. [Explanation of symbols]

[0089] 10…Shielded connector 11...Long inner conductor (inner conductor) 12...Short inner conductor (inner conductor) 13...Outer shell (outer conductor) 14...Substrate side outer shell (outer conductor) 15...Outer conductor tube (outer conductor) 16...Long dielectric (dielectric) 17...Short dielectric (dielectric) 18. Housing 19…Housing body 21. Food 22…Insertion hole 23…Mating recess 24…Concave inner rib 26...Mold cutting recess 27…Fitting hole 28...First locking protrusion 31…Housing side 32...Second locking protrusion 34…Mating groove 35...Protruding piece 36…Housing lock part 37…Upper 38…Side 39…Fitting receiving part 41…Attachment part 42...Cylinder part 43...First connecting protrusion 45…Press-fit recess 46…Through hole 47...Engagement protrusion of outer shell (engagement protrusion) 49...Engagement protrusion of the outer shell body on the board side (engagement protrusion) 51...groove portion of outer shell (groove portion) 52...Groove portion of the outer shell body on the substrate side (groove portion) 54...legs 56…Recess 59...Bottom 61...Back (fitting part) 62...Rising part (fitting part) 63...Partition (fitting part) 65,66,67,68…Contact ribs 72…Protrusion 75…Press-fit protrusion 76…Second connecting protrusion 78…Pressing rib 81...Opening 84…Front mounting part (mounting part) 85...Side mounting part (mounting part) 86...Common mounting section (mounting section) 87...Complementary implementation section (implementation section) 88…Retreat recess 91…Depression 92…Bottom 93...Back 94…Cylindrical joint 95...Protruding part 101...Main body 102...Drawer part 103...Guide groove 104…Horizontal part 105...Extending part 106…Mating connection part 107...Board connection part 108…Housing side retaining protrusion 109...end face 111…Cutting groove 112...Stopper part 113…Regulation Department 116…butt edge 117...Contact protrusion 118…Press-in blade 119...Slit 120…Inner protrusion 121...Holding protrusion 126…Inner surface 127…Inner top surface 200...Circuit board 201…Fixing hole 202...Connection hole 300…Mating connector 301…Space part 303…Mating inner conductor 311…Mating outer conductor

Claims

1. an inner conductor, an outer conductor surrounding the inner conductor, and a dielectric material disposed between the inner conductor and the outer conductor; the outer conductor has a bottom portion having a bottom surface, an opening portion penetrating the bottom portion and opening to the bottom surface, and a plurality of mounting portions protruding from the bottom surface and soldered to a surface of a circuit board; The dielectric is fitted into the opening, the inner conductor has a board connection portion that protrudes from the bottom surface through the opening and is connected to the circuit board; The plurality of mounting portions include side mounting portions disposed on both sides of the opening.

2. 2. The shielded connector according to claim 1, wherein the outer conductor has a back surface that intersects with the bottom surface, and a recess that is recessed from the back surface to the bottom surface and is positioned near the side mounting portion on the bottom surface.

3. The shielded connector according to claim 2 , wherein the side mounting portion is arranged so as to be visible through the recessed portion when viewed from behind the outer conductor.

Images