Coaxial connector

Abstract

This coaxial connector comprises: a case that has an upper surface part, a bottom surface part disposed on the opposite side from the upper surface part in a first direction, and a lateral surface part connecting the upper surface part and the bottom surface part; a fixed terminal that is positioned inside the case; and a movable terminal that is positioned inside the case in a state of being in contact with the fixed terminal. The case comprises a first case constituting the upper surface part, and a second case constituting the bottom surface part and constituting the lateral surface part together with the first case. A recess that is depressed from the lateral surface part is formed in the second case. The second case has a protrusion that is disposed on a lateral surface of the lateral surface part having the recess formed therein, and that extends toward the first case from a placement surface of the second case on which the movable terminal is placed. In a second direction intersecting the first direction and extending along the lateral surface, a range in which the protrusion is provided at least partially overlaps a range in which the recess is provided.

Description

Coaxial connector

[0001] The present disclosure relates to a coaxial connector.

[0002] Patent Document 1 describes a coaxial connector including an insulating case, a fixed terminal and a movable terminal mounted inside the insulating case, and an external terminal mounted outside the insulating case.

[0003] Japanese Unexamined Patent Publication No. 2002-42992

[0004] When the coaxial connector described in Patent Document 1 is mounted on a substrate using solder, the solder or flux contained in the solder may infiltrate into the inside of the insulating case. If solder or flux infiltrates into the inside of the insulating case, the movement of the movable terminal is restricted by the solder or flux, which may cause the coaxial connector to fail to function. However, Patent Document 1 does not describe suppressing the infiltration of solder or flux into the inside of the insulating case.

[0005] An object of the present disclosure is to provide a coaxial connector capable of suppressing infiltration of solder or flux.

[0006] One aspect of the present disclosure provides a coaxial connector comprising: a case having a top surface portion, a bottom surface portion disposed on an opposite side of the top surface portion in a first direction, and a side surface portion connecting the top surface portion and the bottom surface portion; a fixed terminal positioned inside the case; and a movable terminal positioned inside the case in a state of being in contact with the fixed terminal, wherein the case includes a first case constituting the top surface portion, and a second case constituting the bottom surface portion and constituting the side surface portion together with the first case, the second case is formed with a recess recessed from the side surface portion, the second case has a protruding portion disposed on the side surface of the side surface portion where the recess is formed and extending toward the first case from a mounting surface of the second case on which the movable terminal is mounted, and in a second direction intersecting the first direction and extending along the side surface, a range where the protruding portion is provided at least partially overlaps with a range where the recess is provided.

[0007] According to this disclosure, it is possible to provide a coaxial connector that can suppress the ingress of solder or flux.

[0008] Figure 1 is a perspective view of a coaxial connector according to one embodiment of the present disclosure. Figure 2 is an exploded perspective view of the coaxial connector shown in Figure 1. Figure 3 is an exploded perspective view of the coaxial connector shown in Figure 1, viewed from a different direction than in Figure 2. Figure 4 is a perspective view of the coaxial connector shown in Figure 1, in which the external terminals are not shown. Figure 5 is a side view of the coaxial connector shown in Figure 1, in which the external terminals are not shown. Figure 6 is a side view of the coaxial connector shown in Figure 1, viewed from a different direction than in Figure 5, in which the external terminals are not shown. Figure 7 is a cross-sectional view along the line VII-VII in Figure 6.

[0009] The coaxial connector according to the embodiments of this disclosure will be described below with reference to the accompanying drawings. The following description is essentially illustrative and is not intended to limit this disclosure, its applications, or its uses. Furthermore, the drawings are schematic, and the proportions of the dimensions may differ from those of actual devices.

[0010] Figure 1 is a perspective view of a coaxial connector 1 according to one embodiment of the present disclosure. The coaxial connector 1 is surface-mounted, for example, to a substrate (not shown) having a high-frequency circuit and an antenna circuit using solder. The coaxial connector 1 is a test coaxial connector placed on a line connecting the high-frequency circuit and the antenna circuit and is used for testing the high-frequency circuit or the antenna circuit. Referring to Figure 1, the coaxial connector 1 has a rectangular parallelepiped shape. The length of the coaxial connector 1 is 1 mm. The width of the coaxial connector 1 is 1 mm. The height of the coaxial connector 1 is 0.55 mm.

[0011] In the following description, the length direction along each side of the coaxial connector 1 may be referred to as the X direction, the width direction as the Y direction, and the height direction as the Z direction. In particular, in Figure 1, the front right side may be referred to as the +X side, the back left side as the -X side, the front left side as the +Y side, the back right side as the -Y side, the top side as the +Z side, and the bottom side as the -Z side. In this embodiment, the X, Y, and Z directions are orthogonal to each other. In this specification, the side closer to the center of the coaxial connector 1 in each direction may be referred to as the inside, and the side further from the center of the coaxial connector 1 in each direction may be referred to as the outside. The Z direction in this embodiment is an example of the first direction according to this disclosure, the Y direction in this embodiment is an example of the second direction according to this disclosure, and the Z direction in this embodiment is an example of the third direction according to this disclosure.

[0012] Figure 2 is an exploded perspective view of the coaxial connector 1 as seen from the +Z side. Figure 3 is an exploded perspective view of the coaxial connector 1 as seen from the -Z side. Referring to Figures 2 and 3, the coaxial connector 1 comprises a case 10. The case 10 has a first case 20 and a second case 30 located on the -Z side of the first case 20. The coaxial connector 1 comprises fixed terminals 40 and movable terminals 50 positioned within the case 10, and external terminals 60 mounted on the outside of the case 10.

[0013] The case 10 holds the fixed terminal 40 and the movable terminal 50. The case 10 is electrically insulating. The case 10 is made of resin.

[0014] Figure 4 is a perspective view of the coaxial connector 1, and the external terminals 60 are not shown in Figure 4. Referring to Figure 4, the case 10 has a rectangular parallelepiped shape as a whole. The case 10 has a top surface 11, a bottom surface 12 located on the opposite side of the top surface 11 in the Z direction, and a side surface 13 connecting the top surface 11 and the bottom surface 12. An insertion opening 14 is formed in the top surface 11 into which the probe pins 2 (shown in Figure 7) of the inspection probe are inserted. The first case 20 and the second case 30 are fixed in a state where they are superimposed in the Z direction. Fixed terminals 40 and movable terminals 50 are sandwiched between the first case 20 and the second case 30.

[0015] The top surface 11 is formed by the +Z side of the first case 20, i.e., the top surface, and the bottom surface 12 is formed by the -Z side of the second case 30, i.e., the bottom surface. The side surface 13 is formed by the sides of the first case 20 on both sides in the X direction, the sides of the first case 20 on both sides in the Y direction, the sides of the second case 30 on both sides in the X direction, and the sides of the second case 30 on both sides in the Y direction. The side surface 13 comprises a first surface 13a that defines the +X side of case 10 and extends in the Y and Z directions, and a second surface 13b (shown in Figure 6) that defines the -X side of case 10 and extends in the Y and Z directions. The side surface 13 comprises a third surface 13c that defines the +Y side of case 10 and extends in the X and Z directions, and a fourth surface 13d (shown in Figure 5) that defines the -Y side of case 10 and extends in the X and Z directions. The first surface 13a and the second surface 13b of this embodiment are examples of the surfaces relating to the present disclosure.

[0016] Referring to Figures 2 and 3, the first case 20 comprises a main body 21, a cylindrical portion 22, a plurality of positioning portions 23A to 23F, and a pair of projections 24A and 24B. In the following description, when it is not necessary to distinguish between each of the plurality of positioning portions 23A to 23F, one of the plurality of positioning portions 23A to 23F may simply be referred to as positioning portion 23. In the following description, when it is not necessary to distinguish between each of the pair of projections 24A and 24B, one of the pair of projections 24A and 24B may simply be referred to as projection 24.

[0017] The main body 21 is a rectangular plate in plan view along the Z direction. An insertion opening 14 is located on the main body 21. The insertion opening 14 penetrates the main body 21 in the Z direction.

[0018] The cylindrical portion 22 is a frustoconical shape that protrudes from the upper surface of the main body 21 toward the +Z side. The space defined by the inner circumferential surface of the cylindrical portion 22 communicates with the insertion opening 14 toward the -Z side. The inner circumferential surface of the cylindrical portion 22 has a frustoconical shape that tapers toward the -Z side, that is, toward the insertion opening 14.

[0019] As shown in Figure 3, the positioning portion 23 is a projection that protrudes from the bottom surface of the main body 21 toward the -Z direction. The multiple positioning portions 23A to 23C position the fixed terminal 40 in a plane perpendicular to the Z direction. In other words, the multiple positioning portions 23A to 23C position the fixed terminal 40 in the X and Y directions. The multiple positioning portions 23D to 23F position the movable terminal 50 in a plane perpendicular to the Z direction. In other words, the multiple positioning portions 23D to 23F position the movable terminal 50 in the X and Y directions.

[0020] The projection 24 is a disc-shaped projection that protrudes from the upper surface of the main body 21 toward the +Z direction. The pair of projections 24A and 24B are arranged diagonally opposite each other on the upper surface 11. The pair of projections 24A and 24B position the case 10 relative to the external terminals 60 in a plane perpendicular to the Z direction. In other words, the pair of projections 24A and 24B position the case 10 relative to the external terminals 60 in the X and Y directions.

[0021] The second case 30 comprises a main body 31, a pair of posts 32A and 32B, and a pair of protrusions 33 and 34. In the following description, when there is no need to distinguish between the pair of posts 32A and 32B, one of the pair of posts 32A and 32B may simply be referred to as post 32.

[0022] The main body 31 is generally rectangular in shape when viewed in a plan view along the Z direction. The main body 31 has a mounting surface 31a on which the fixed terminal 40 and the movable terminal 50 are placed. The mounting surface 31a is generally rectangular when viewed in a plan view along the Z direction.

[0023] The main body 31 has recesses 35 and 36 formed in the side portion 13. Recess 35 is recessed toward the -X side from the first surface 13a. Recess 36 is recessed toward the +X side from the second surface 13b. Recesses 35 and 36 are generated during the manufacturing of the second case 30 and do not necessarily have any function in the coaxial connector 1 as a finished product.

[0024] A notch 37 is formed at the +Y end of the main body 31, recessed toward the -Y side in the center in the X direction. Additionally, a notch 38 is formed at the -Y end of the main body 31, recessed toward the +Y side in the center in the X direction. As a result, notches 37 and 38 are formed in the bottom surface 12 of the case 10.

[0025] The post 32 is a projection that protrudes from the bottom surface of the main body 31 toward the -Z side. The post 32 protrudes from the bottom surface 12 toward the opposite side of the top surface 11, i.e., toward the -Z side. The pair of posts 32A and 32B are arranged diagonally opposite each other in the second case 30.

[0026] The protrusion 33 projects from the mounting surface 31a of the main body 31 toward the +Z side. That is, the protrusion 33 projects from the mounting surface 31a of the main body 31 toward the first case 20. The protrusion 33 is located on the first surface 13a of the side surface 13 in which the recess 35 is formed. The protrusion 33 is located at the +X side end of the main body 31. The protrusion 33 has a surface 33a that constitutes a part of the first surface 13a. The surface 33a of the protrusion 33 extends in the same plane as the +X side surface of the main body 31. In other words, the surface 33a of the protrusion 33 is flush with the +X side surface of the main body 31. To put it another way, the surface 33a of the protrusion 33 is aligned in the X direction with the +X side surface of the main body 31.

[0027] The protruding portion 34 protrudes from the mounting surface 31a of the main body 31 toward the +Z side. That is, the protruding portion 34 protrudes from the mounting surface 31a of the main body 31 toward the first case 20. The protruding portion 34 is located on the second surface 13b of the side surface 13 in which the recess 36 is formed. The protruding portion 34 is located at the -X side end of the main body 31. The protruding portion 34 has a surface 34a that constitutes a part of the second surface 13b. The surface 34a of the protruding portion 34 extends in the same plane as the -X side surface of the main body 31. In other words, the surface 34a of the protruding portion 34 is flush with the -X side surface of the main body 31. To put it another way, the surface 34a of the protruding portion 34 is aligned in the X direction with the -X side surface of the main body 31.

[0028] The fixed terminal 40 is electrically connected to either the high-frequency circuit or the antenna circuit when the coaxial connector 1 is mounted on the circuit board.

[0029] The fixed terminal 40 is conductive. The fixed terminal 40 is manufactured by bending a metal member of a predetermined shape obtained by punching out a metal plate. The fixed terminal 40 is made of stainless steel. The fixed terminal 40 comprises a base portion 41, two contact portions 42A and 42B, and a lead portion 43. In the following description, when there is no need to particularly distinguish between the two contact portions 42A and 42B, one of the two contact portions 42A and 42B may simply be referred to as contact portion 42.

[0030] The base portion 41 is flat. The base portion 41 is generally U-shaped in a plan view along the Z direction. The base portion 41 is sandwiched between the first case 20 and the second case 30 and fixed within the case 10. The base portion 41 is positioned in the X, Y, and Z directions by being sandwiched between the first case 20 and the second case 30.

[0031] The contact portion 42 is flat. The two contact portions 42A and 42B protrude from the base portion 41, respectively. The two contact portions 42A and 42B extend parallel to each other with a gap between them.

[0032] As shown in Figure 4, the lead portion 43 is drawn out from inside the case 10. The lead portion 43 has a first portion 43a extending from the base portion 41 toward the -Z side, and a second portion 43b connected to the first portion 43a via a bend and extending from the bend toward the +Y side. In other words, the lead portion 43 has an L-shape when viewed along the X direction. The lead portion 43 is located within the notch 37 of the second case 30. The lead portion 43 is spaced apart from other components except the fixed terminal 40. The second portion 43b is exposed to the outside of the coaxial connector 1. The second portion 43b is the part that will be fixed to the pads of the substrate using solder when the coaxial connector 1 is mounted on the substrate.

[0033] When the coaxial connector 1 is mounted on the circuit board, the movable terminal 50 is electrically connected to a circuit different from the circuit to which the fixed terminal 40 is connected among the high-frequency circuit and the antenna circuit.

[0034] The movable terminal 50 is electrically conductive. The movable terminal 50 is manufactured by bending a metal member of a predetermined shape obtained by punching out a metal plate. The movable terminal 50 is made of stainless steel. The movable terminal 50 comprises a base portion 51, a contact portion 52, and a lead portion 53.

[0035] The base portion 51 is flat. The base portion 51 is sandwiched between the first case 20 and the second case 30 and fixed within the case 10. That is, the base portion 51 is positioned in the X, Y, and Z directions by being sandwiched between the first case 20 and the second case 30.

[0036] The contact portion 52 has spring properties. The contact portion 52 is cantilevered to the base portion 51. The contact portion 52 has a first plate portion 52a and a second plate portion 52b that extend in the Y direction and are connected so as to fold back at the connecting portion.

[0037] The first plate portion 52a extends from the base portion 51 towards the +Y side. The first plate portion 52a is also curved convexly towards the +Z side. The +Y side end of the first plate portion 52a is connected to the +Y side end of the second plate portion 52b via a connecting portion.

[0038] The second plate portion 52b extends from the connecting portion toward the -Y side. More specifically, the second plate portion 52b extends diagonally toward the -X side as it moves toward the -Y side from the connecting portion. The second plate portion 52b is curved convexly toward the +Z side. The second plate portion 52b is in contact with the -Z side surface, i.e., the bottom surface, of the contact portion 52 of the fixed terminal 40.

[0039] The lead portion 53 has a first portion 53a extending from the base portion 51 toward the -Z side, and a second portion 53b connected to the first portion 53a via a bent portion and extending from the bent portion toward the -Y side. In other words, the lead portion 53 has an L-shape when viewed along the X direction. The lead portion 53 is located within the notch 38 of the second case 30. The lead portion 53 is spaced apart from other components other than the movable terminal 50. The second portion 53b is exposed to the outside of the coaxial connector 1. The second portion 53b is the part that will be fixed to the pads of the substrate using solder when the coaxial connector 1 is mounted on the substrate.

[0040] The movable terminal 50 is electrically connected to the fixed terminal 40 when the contact portion 52 of the movable terminal 50 contacts the contact portion 42 of the fixed terminal 40. When the probe pin 2 (shown in Figure 7) of the inspection probe is inserted into the case 10 through the insertion opening 14 and the contact portion 52 is pushed toward the -Z side, the movable terminal 50 elastically deforms, causing the movable terminal 50 and the fixed terminal 40 to separate. This releases the electrical connection between the movable terminal 50 and the fixed terminal 40, and simultaneously electrically connects the inspection probe and the movable terminal 50.

[0041] The external terminal 60 is connected to ground potential when the coaxial connector 1 is mounted on the circuit board. The external terminal 60 is conductive. The external terminal 60 is made of phosphor bronze. The external terminal 60 is formed integrally with the first case 20 by insert molding. The external terminal 60 comprises an upper wall portion 61, a pair of side wall portions 62A and 62B, a pair of bottom wall portions 63A and 63B, and a cylindrical portion 64. In the following description, when it is not necessary to distinguish between the pair of side wall portions 62A and 62B, one of the pair of side wall portions 62A and 62B may simply be referred to as side wall portion 62. In the following description, when it is not necessary to distinguish between the pair of bottom wall portions 63A and 63B, one of the pair of bottom wall portions 63A and 63B may simply be referred to as bottom wall portion 63.

[0042] The upper wall portion 61 is in a plate shape extending in the X direction and the Y direction. The upper wall portion 61 is generally rectangular in a plan view viewed along the Z direction. A cylindrical portion 64 is disposed on the upper wall portion 61. As shown in FIG. 3, recesses 61a and 61b respectively fitted to the protrusions 24A and 24B of the first case 20 are formed on the bottom surface of the upper wall portion 61 facing the upper surface portion 11, that is, the surface on the -Z side. The pair of recesses 61a and 61b are respectively disposed at opposite corners of the bottom surface of the upper wall portion 61.

[0043] The side wall portion 62 is in a plate shape extending in the X direction and the Y direction. The side wall portion 62A is connected to the +X-side end of the upper wall portion 61 via a bent portion, and extends from the bent portion toward the -Z side. The side wall portion 62A is disposed facing the first surface 13a (shown in FIG. 5) of the side surface portion 13 in the Y direction. The side wall portion 62B is connected to the -X-side end of the upper wall portion 61 via a bent portion, and extends from the bent portion toward the -Z side. The side wall portion 62B is disposed facing the second surface 13b (shown in FIG. 6) of the side surface portion 13 in the Y direction.

[0044] The bottom wall portion 63 is in a plate shape extending in the X direction and the Y direction. The bottom wall portion 63 is disposed facing the upper wall portion 61 with a gap provided between the same and the upper wall portion 61 in the Z direction. The bottom wall portion 63, together with the upper wall portion 61, sandwiches the case 10 therebetween. The bottom wall portion 63 is connected to the -Z-side end of the corresponding side wall portion 62 via a bent portion. The bottom wall portion 63 is fixed to a pad of a substrate by using solder when the coaxial connector 1 is mounted on the substrate.

[0045] As shown in FIG. 1, the coaxial connector 1 has a guide portion 70 that guides the probe pin 2 (shown in FIG. 7) of an inspection probe to the insertion port 14. The guide portion 70 is in a cylindrical shape protruding from the upper wall portion 61 to the +Z side. The guide portion 70 of the present embodiment is constituted by the cylindrical portion 22 of the first case 20 and the cylindrical portion 64 of the external terminal 60. The guide portion 70 includes a guide surface 71 constituted by an inner circumferential surface of the cylindrical portion 22 and an inner circumferential surface of the cylindrical portion 64. A space defined by the guide surface 71 communicates with the insertion port 14 on the -Z side. The guide surface 71 has a truncated conical shape tapering toward the -Z side, that is, toward the insertion port 14.

[0046] The cylindrical portion 64 protrudes from the upper wall portion 61 toward the +Z side. The cylindrical portion 64 has a truncated conical shape tapering toward the -Z side. The cylindrical portion 64 is fitted onto the cylindrical portion 22 of the first case 20 from the outside. The cylindrical portion 64 is arranged to surround the cylindrical portion 22 of the first case 20. The cylindrical portion 64 has a function of holding the inspection probe by fitting with an outer conductor when a probe pin 2 (shown in FIG. 7) of an inspection probe having the outer conductor (not shown) is inserted into the insertion port 14.

[0047] As shown in FIG. 3, an outlet 65 for drawing the fixed terminal 40 outward is formed at the +Y-side end of the external terminal 60. An outlet 66 for drawing the movable terminal 50 outward is formed at the -Y-side end of the external terminal 60. Each of the outlets 65 and 66 is arranged to face the side surface portion 13 in the Y direction. Accordingly, the third surface 13c of the side surface portion 13 is exposed to the outside through the outlet 65, and the fourth surface 13d of the side surface portion 13 is exposed to the outside through the outlet 66.

[0048] FIG. 5 is a side view of the coaxial connector 1 viewed from the +X side, and illustration of the external terminal 60 is omitted in FIG. 5. FIG. 6 is a side view of the coaxial connector 1 viewed from the -X side, and illustration of the external terminal 60 is omitted in FIG. 6. FIG. 7 is a cross-sectional view taken along line VII-VII in FIG. 5.

[0049] The recess 35 has a rectangular shape with a long side extending in the Y direction and a short side extending in the Z direction in a side view viewed from the +X side shown in FIG. 5. A lower end of the recess 35, that is, the -Z-side end, is open to the -Z side. In other words, the recess 35 is open in the bottom surface portion 12. An upper end of the recess 35, that is, the +Z-side end, terminates inside the main body 31. In other words, the +Z-side end of the recess 35 is closed. Further, the +Z-side end of the recess 35 extends parallel to the Y direction, and is arranged on the -Z side relative to the mounting surface 31a of the main body 31. The +Z-side end of the recess 35 is arranged on the opposite side of the first case 20 with respect to the mounting surface 31a of the main body 31 in the Z direction.

[0050] Referring to Figures 5 and 7, the upper end of the protrusion 33, i.e., the end on the +Z side, is positioned on the +Z side of the mounting surface 31a of the main body 31. The protrusion 33 is positioned between the movable terminal 50 and the mounting surface 31a. The protrusion 33 is positioned on the -Z side of the first plate portion 52a of the movable terminal 50. The upper surface of the protrusion 33, i.e., the +Z side surface, extends along the lower surface of the first plate portion 52a of the movable terminal 50, i.e., the -Z side surface.

[0051] The width of the protrusion 33, i.e., the dimension W33 in the Y direction, is greater than the dimension W35 of the recess 35 in the Y direction.

[0052] The dimension W33 of the protrusion 33 in the Y direction is the dimension of the -Z side end of the protrusion 33 in the Y direction. In this embodiment, the dimension of the -Z side end of the protrusion 33 in the Y direction is the dimension of the boundary between the mounting surface 31a and the protrusion 33 in the Y direction. The shape of the protrusion 33 when viewed from the +X side is not limited to the shape shown in Figure 5.

[0053] The dimension W35 of the recess 35 in the Y direction is the dimension of the recess 35 at the +Z side end in the Y direction. In other words, the dimension W35 of the recess 35 in the Y direction is the dimension of the recess 35 at the end facing the projection 33. The shape of the recess 35 when viewed from the +X side is not limited to a rectangular shape as in this embodiment. For example, the shape of the recess 35 when viewed from the +X side may be a shape in which the dimension of the +Z side end in the Y direction is smaller than the dimension of the -Z side end in the Y direction, such as a trapezoid. In this case, the dimension W33 of the projection 33 in the Y direction is preferably larger than the dimension W35 of the +Z side end of the recess 35 in the Y direction, but it does not have to be larger than the dimension of the -Z side end of the recess 35 in the Y direction. Furthermore, the shape of the recess 35 when viewed from the +X side is not limited to a rectangular shape or a quadrilateral shape such as a trapezoid. In this case, it is preferable that the dimension W35 in the Y direction of the end portion of the recess 35 that is located on the +Z side and extends along the Y direction is smaller than the dimension W33 of the protruding portion 33 in the Y direction.

[0054] In the Y direction, the area where the protrusion 33 is provided overlaps with the entire area where the recess 35 is provided in the Y direction. In other words, the entire recess 35 is located within the area where the protrusion 33 is provided in the Y direction. To put it another way, the -Y end of the protrusion 33 is located -Y further than the -Y end of the recess 35, and the +Y end of the protrusion 33 is located +Y further than the +Y end of the recess 35.

[0055] In the side view shown in Figure 6, the recess 36 is rectangular in shape, with its longer side extending in the Y direction and its shorter side extending in the Z direction. The lower end of the recess 36, i.e., the -Z side end, is open to the -Z side. In other words, the recess 36 is open at the bottom surface 12. The upper end of the recess 36, i.e., the +Z side end, terminates within the main body 31. In other words, the +Z side end of the recess 36 is closed. Furthermore, the +Z side end of the recess 36 extends parallel to the Y direction and is positioned on the -Z side of the mounting surface 31a of the main body 31. The +Z side end of the recess 36 is positioned in the Z direction on the opposite side of the first case 20 from the mounting surface 31a of the main body 31.

[0056] Referring to Figures 6 and 7, the upper end of the projection 34, i.e., the end on the +Z side, is positioned on the +Z side of the mounting surface 31a of the main body 31. In the side view shown in Figure 6, the projection 34 is stepped. The projection 34 comprises a first step 34b formed one step higher than the mounting surface 31a, and a second step 34c formed one step higher than the first step 34b. The second step 34c is positioned in the center of the first step 34b in the Y direction. The second step 34c, together with the first case 20, sandwiches the fixing terminal 40. As a result, the fixing terminal 40 is fixed to the case 10 in the Z direction. The second step 34c supports the first case 20 via the fixing terminal 40. Furthermore, the -X side end of the first case 20 and the -X side end of the second case 30 are spaced apart along their entire length in the Y direction. In other words, the first case 20 and the second case 30 are spaced apart on the second surface 13b. To put it another way, the first case 20 and the second case 30 are not in direct contact on the second surface 13b.

[0057] The width of the protruding portion 34, i.e., the dimension W34 in the Y direction, is greater than the dimension W36 of the recessed portion 36 in the Y direction.

[0058] The dimension W34 of the protrusion 34 in the Y direction is the dimension of the -Z side end of the protrusion 34 in the Y direction. In this embodiment, the dimension of the -Z side end of the protrusion 34 in the Y direction is the dimension of the boundary between the mounting surface 31a and the protrusion 34 in the Y direction. The shape of the protrusion 34 when viewed from the -X side is not limited to the shape shown in Figure 5.

[0059] The dimension W36 of the recess 36 in the Y direction is the dimension of the +Z side end of the recess 36 in the Y direction. In other words, the dimension W36 of the recess 36 in the Y direction is the dimension of the end of the recess 36 facing the projection 34 in the Y direction. The shape of the recess 36 when viewed from the -X side is not limited to a rectangular shape as in this embodiment. For example, the shape of the recess 36 when viewed from the -X side may be a shape in which the dimension of the +Z side end in the Y direction is smaller than the dimension of the -Z side end in the Y direction, such as a trapezoid. In this case, the dimension W34 of the projection 34 in the Y direction is preferably larger than the dimension W36 of the +Z side end of the recess 36 in the Y direction, but it does not have to be larger than the dimension of the -Z side end of the recess 36 in the Y direction. Furthermore, the shape of the recess 36 when viewed from the -X side is not limited to a rectangular shape or a quadrilateral shape such as a trapezoid. In this case, it is preferable that the dimension W36 in the Y direction of the end portion of the recess 36 that is located on the +Z side and extends along the Y direction is smaller than the dimension W34 of the protruding portion 34 in the Y direction.

[0060] In the Y direction, the area where the protrusion 34 is provided overlaps with the entire area where the recess 36 is provided in the Y direction. In other words, the entire recess 36 is located within the area where the protrusion 34 is provided in the Y direction. To put it another way, the -Y end of the protrusion 34 is located -Y further than the -Y end of the recess 36, and the +Y end of the protrusion 34 is located +Y further than the +Y end of the recess 36.

[0061] The coaxial connector 1 according to this embodiment provides the following effects.

[0062] (1) The coaxial connector 1 comprises: a case 10 having an upper surface portion 11, a bottom surface portion 12 located on the opposite side of the upper surface portion 11 in the Z direction, and a side surface portion 13 connecting the upper surface portion 11 and the bottom surface portion 12; a fixed terminal 40 positioned within the case 10; and a movable terminal 50 positioned within the case 10 in contact with the fixed terminal 40. The case 10 comprises a first case 20 that constitutes the upper surface portion 11, and a second case 30 that constitutes the bottom surface portion 12 and together with the first case 20 constitutes the side surface portion 13. The second case 30 has recesses 35 and 36 formed in the side surface portion 13, respectively, and the second case 30 has protrusions 33 and 34 extending toward the first case 20 from the mounting surface 31a of the second case 30 on which the movable terminal 50 is placed. In the second direction that intersects the Z direction and extends along the first surface 13a and the second side surface 13ab, the areas in the Y direction where the protrusions 33 and 34 are provided overlap at least partially with the areas where the corresponding recesses 35 and 36 are provided.

[0063] In this configuration, the protrusions 33 and 34 extending from the mounting surface 31a of the second case 30 toward the first case 20 are provided in a range that at least partially overlaps with the range where the recesses 35 and 36 are provided in the Y direction. As a result, solder or flux accumulated in the recesses 35 and 36 must overcome the protrusions 33 and 34 in order to crawl up along the side surface of the second case 30 and enter the case 10. Therefore, compared to a configuration in which the second case 30 does not have protrusions 33 and 34, the intrusion of solder or flux into the case 10 can be suppressed.

[0064] (2) The dimensions W33 and W34 of the protrusions 33 and 34 in the Y direction are greater than the dimensions W35 and W36 of the corresponding recesses 35 and 36 in the Y direction, respectively.

[0065] With this configuration, the dimensions W33 and W34 of the protrusions 33 and 34 in the Y direction are larger than the dimensions W35 and W36 of the corresponding recesses 35 and 36, respectively. As a result, the protrusions 33 and 34 can cover a wider area of ​​the recesses 35 and 36 in the Y direction. Consequently, compared to a configuration where the dimensions W33 and W34 of the protrusions 33 and 34 in the Y direction are smaller than the dimensions W35 and W36 of the corresponding recesses 35 and 36, respectively, the intrusion of solder or flux into the case 10 can be suppressed.

[0066] (3) The area in the Y direction where the protrusions 33 and 34 are provided overlaps with the entire area in the Y direction where the recesses 35 and 36 are provided.

[0067] With this configuration, the protrusions 33 and 34 cover the corresponding recesses 35 and 36 along their entire length in the Y direction. As a result, compared to a configuration in which the protrusions 33 and 34 cover only a portion of the corresponding recesses 35 and 36, the intrusion of solder or flux into the case 10 can be suppressed.

[0068] (4) At least a portion of the protruding portion 33 is positioned between the movable terminal 50 and the mounting surface 31a.

[0069] With this configuration, at least a portion of the protrusion 33 is positioned between the movable terminal 50 and the mounting surface 31a, so that when the movable terminal 50 is pressed by the probe pin 2, excessive deformation of the movable terminal 50 to the -Z side can be suppressed. As a result, the durability of the movable terminal 50 can be increased, and displacement of the movable terminal 50 within the case 10 can be suppressed.

[0070] (5) The case 10 is equipped with an external terminal 60, the external terminal 60 having an upper wall portion 61 positioned facing the upper surface portion 11 in the Z direction, and side wall portions 62A and 62B positioned facing the side surface portion 13 in the X direction which intersects both the Z and Y directions, with a gap between them and the side surface portion 13, the first surface 13a and the second surface 13b on which the protrusions 33 and 34 are respectively positioned, face the side wall portions 62A and 62B, respectively.

[0071] Because there is a gap between the first surface 13a, the second surface 13b and the side wall portions 62A, 62B, solder or flux may crawl up along the first surface 13a and the second surface 13b due to capillary action. With this configuration, since the protrusions 33 and 34 are positioned on the first surface 13a and the second surface 13b, it is possible to suppress the solder or flux crawling up along the first surface 13a and the second surface 13b from entering the case 10.

[0072] (6) The recesses 35 and 36 are open at the bottom surface 12.

[0073] With this configuration, since the recesses 35 and 36 are open at the bottom surface 12, when the coaxial connector 1 is soldered to the substrate, solder or flux that crawls up into the second case 30 from the -Z side can be guided into and contained within the recesses 35 and 36. As a result, the amount of solder or flux that crawls up along other parts of the second case 30 can be reduced, and the intrusion of solder or flux into the case 10 can be suppressed.

[0074] (7) The protruding portion 34, together with the first case 20, sandwiches the fixed terminal 40.

[0075] In this configuration, the fixed terminal 40 is fixed in the Z direction within the case 10 by the protrusion 34 and the first case 20. That is, the protrusion 34 has the function of suppressing the ingress of solder or flux into the case 10, as well as the function of fixing the fixed terminal 40 within the case 10. As a result, the structure of the coaxial connector 1 can be simplified compared to a configuration in which a component for fixing the fixed terminal 40 in the Z direction within the case 10 is provided separately from the protrusion 34.

[0076] (8) On the second surface 13b, the first case 20 and the second case 30 are arranged with a gap between them.

[0077] In the configuration where the first case 20 and the second case 30 are in direct contact on the second surface 13b, due to manufacturing errors or other reasons, the gap between the protrusion 34 and the first case 20 may become larger than the thickness of the fixing terminal 40, making it impossible to sandwich the fixing terminal 40 between the protrusion 34 and the first case 20. As a result, the fixing terminal 40 may not be able to be fixed inside the case 10. In contrast, with this configuration, since the first case 20 and the second case 30 are spaced apart on the second surface 13b, displacement of the fixing terminal 40 inside the case 10 can be suppressed.

[0078] (9) The protruding portion 34 supports the first case 20.

[0079] With this configuration, the protrusion 34 has the function of supporting the first case 20, in addition to the function of suppressing the ingress of solder or flux into the case 10. As a result, the structure of the coaxial connector 1 can be simplified compared to a configuration in which the second case 30 has a component that supports the first case 20 separately from the protrusion 34.

[0080] (10) The protruding portions 33 and 34 each have surfaces 33a and 34a that extend in the same plane as the +X side surface and the -X side surface of the main body 31 of the second case 30, respectively.

[0081] For example, in a configuration where the surface 33a of the protrusion 33 is offset to the -X side compared to the +X side surface of the main body 31 of the second case 30, solder or flux can easily penetrate into the case 10. On the other hand, in a configuration where the surface 33a of the protrusion 33 is offset to the +X side compared to the +X side surface of the main body 31 of the second case 30, the gap between the protrusion 33 and the side wall 62A becomes smaller, which can cause capillary action. This makes it easier for solder or flux to crawl up along the protrusion 33. In contrast, in this configuration, since the surface 33a is on the same plane as the +X side surface of the main body 31, it is possible to suppress the penetration of solder or flux into the case 10, and also to suppress the occurrence of capillary action between the protrusion 33 and the side wall 62A. Similarly, the surface 34a of the protrusion 34 exhibits the same effects as the surface 33a of the protrusion 33.

[0082] (11) The upper ends of the recesses 35 and 36 are positioned in the Z direction on the side opposite to the first case 20 with respect to the mounting surface 31a.

[0083] With this configuration, the upper ends of the recesses 35 and 36 can be positioned on the first case 20 side relative to the mounting surface 31a in the Z direction, compared to a configuration where the upper ends of the recesses 35 and 36 are positioned on the first case 20 side relative to the mounting surface 31a. As a result, the distance that the solder or flux accumulated in the recesses 35 and 36 must travel to overcome the protrusions 33 and 34 can be increased, thereby suppressing the intrusion of solder or flux into the case 10.

[0084] [Modification] The coaxial connector according to this disclosure is not limited to the configuration of the embodiment described above, and various modifications are possible.

[0085] In the above embodiment, the lower ends of the recesses 35 and 36 were open toward the -Z side, but they may be closed. According to this modification of the above embodiment, when the coaxial connector 1 is soldered to the substrate, solder or flux crawling up from the -Z side into the second case 30 is less likely to accumulate in the recesses 35 and 36. As a result, the amount of solder or flux crawling up from the recesses 35 and 36 along the surface of the second case 30 can be reduced, and the intrusion of solder or flux into the case 10 can be suppressed.

[0086] In the above embodiment, the first case 20 and the second case 30 were formed separately, but they may be formed integrally.

[0087] In the above embodiment, two protrusions 33 and 34 were provided, but either one of the two protrusions 33 and 34 may be provided.

[0088] [Note] The coaxial connector relating to this disclosure provides the following embodiments.

[0089] [Aspect 1] A coaxial connector comprising: a case having a top surface, a bottom surface disposed on the opposite side of the top surface in a first direction, and a side surface connecting the top surface and the bottom surface; a fixed terminal positioned within the case; and a movable terminal positioned within the case in contact with the fixed terminal, wherein the case comprises: a first case constituting the top surface; and a second case constituting the bottom surface and, together with the first case, constituting the side surface, the second case has a recess formed in the side surface, the second case has a projection positioned on the side of the side surface where the recess is formed, extending toward the first case from the mounting surface of the second case on which the movable terminal is placed, and in a second direction intersecting the first direction and extending along the side surface, the area where the projection is provided at least partially overlaps with the area where the recess is provided.

[0090] [Aspect 2] The coaxial connector according to aspect 1, wherein the dimension of the protrusion in the second direction is greater than the dimension of the recess in the second direction.

[0091] [Aspect 3] The coaxial connector according to aspect 1 or 2, wherein the area in which the protrusion is provided in the second direction overlaps with the entire area in which the recess is provided in the second direction.

[0092] [Aspect 4] The coaxial connector according to any one of aspects 1 to 3, wherein at least a portion of the protruding portion is disposed between the movable terminal and the mounting surface described above.

[0093] [Aspect 5] A coaxial connector according to any one of aspects 1 to 4, comprising an external terminal mounted on the case, wherein the external terminal has an upper wall portion arranged facing the upper surface portion in the first direction, and a side wall portion arranged facing the side portion in the third direction intersecting both the first and second directions, with a gap between it and the side portion, and the side portion is opposite to the side wall portion.

[0094] [Aspect 6] The coaxial connector according to any one of aspects 1 to 5, wherein the recess is open in the bottom surface.

[0095] [Aspect 7] The coaxial connector according to any one of aspects 1 to 5, wherein the end of the recess located on the opposite side of the first case in the first direction is closed.

[0096] [Aspect 8] The coaxial connector according to any one of aspects 1 to 7, wherein the protruding portion, together with the first case, sandwiches the fixed terminal.

[0097] [Aspect 9] The coaxial connector according to any one of aspects 1 to 8, wherein the first case and the second case are spaced apart on the side surface.

[0098] [Aspect 10] The coaxial connector according to any one of aspects 1 to 9, wherein the protruding portion supports the first case.

[0099] [Aspect 11] The coaxial connector according to any one of aspects 1 to 10, wherein the protruding portion has a surface that extends in the same plane as the surface of the second case on which the recess is provided.

[0100] [Aspect 12] The coaxial connector according to aspect 11, wherein the upper end of the recess is positioned on the opposite side of the first case from the mounting surface described above in the first direction.

[0101] 1 Coaxial connector 2 Probe pin 10 Case 11 Top surface 12 Bottom surface 13 Side surface 14 Insertion opening 20 First case 21 Main body 22 Cylinder part 23 Positioning part 24 Projection part 30 Second case 31 Main body 32 Post 33 Protruding part 33a Surface 34 Protruding part 34a Surface 34b First stage part 34c Second stage part 35 Recess 36 Recess 37 Notch 38 Notch 40 Fixed terminal 41 Base part 42 Contact part 43 Lead part 43a First part 43b Second part 50 Movable terminal 51 Base part 52 Contact part 52a First plate part 52b Second plate part 53 Lead part 53a First part 53b Second part 60 External terminal 61 Upper wall portion 61a Recess 61b Recess 62 Side wall portion 63 Bottom wall portion 64 Cylinder portion 65 Outlet 66 Outlet 70 Guide portion 71 Guide surface

Claims

1. A coaxial connector comprising: a case having a top surface, a bottom surface located opposite to the top surface in a first direction, and a side surface connecting the top surface and the bottom surface; a fixed terminal positioned within the case; and a movable terminal positioned within the case in contact with the fixed terminal, wherein the case comprises a first case constituting the top surface, and a second case constituting the bottom surface and, together with the first case, constituting the side surface, the second case has a recess formed in the side surface, the second case has a projection positioned on the side of the side surface where the recess is formed, extending toward the first case from the mounting surface of the second case on which the movable terminal is placed, and in a second direction intersecting the first direction and extending along the side surface, the area where the projection is provided at least partially overlaps with the area where the recess is provided.

2. The coaxial connector according to claim 1, wherein the dimension of the protrusion in the second direction is greater than the dimension of the recess in the second direction.

3. The coaxial connector according to claim 1 or 2, wherein the area in which the protrusion is provided in the second direction overlaps with the entire area in which the recess is provided in the second direction.

4. The coaxial connector according to any one of claims 1 to 3, wherein at least a portion of the protruding portion is disposed between the movable terminal and the mounting surface described above.

5. A coaxial connector according to any one of claims 1 to 4, comprising an external terminal mounted on the case, wherein the external terminal has an upper wall portion arranged facing the upper surface portion in a first direction, and a side wall portion arranged facing the side portion in a third direction intersecting both the first and second directions, with a gap between it and the side portion, and the side portion is opposite to the side wall portion.

6. The coaxial connector according to any one of claims 1 to 5, wherein the recess is open in the bottom surface.

7. The end of the recess located opposite the first case in the first direction is closed, according to any one of claims 1 to 5.

8. The coaxial connector according to any one of claims 1 to 7, wherein the protruding portion, together with the first case, sandwiches the fixed terminal.

9. The coaxial connector according to claim 8, wherein the first case and the second case are spaced apart on the side surface.

10. The coaxial connector according to any one of claims 1 to 9, wherein the protruding portion supports the first case.

11. The coaxial connector according to any one of claims 1 to 10, wherein the protrusion has a surface that extends in the same plane as the surface of the second case on which the recess is provided.

12. The coaxial connector according to claim 11, wherein the upper end of the recess is positioned on the opposite side of the first case from the mounting surface described above in the first direction.

Images