Coaxial connector

Abstract

The purpose of the present invention is to enable a counterpart-side inner conductor to be well connected to an inner conductor housed in an insulator. A coaxial connector to which a counterpart-side coaxial connector having a counterpart-side inner conductor is connected is provided with an inner conductor to which the counterpart-side inner conductor is connected, an insulator including a cylindrical portion that accommodates the inner conductor, and an outer conductor that surrounds the periphery of the insulator. The inner peripheral part of the cylinder part is provided with a rib part which partially protrudes in the circumferential direction of the inner peripheral part of the cylinder part and extends in the axial direction of the cylinder part.

Description

Technical Field

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

[0002] Patent Document 1 discloses a substrate-side connector having a substrate-side inner conductor, a substrate-side dielectric, and a substrate-side outer conductor. The substrate-side inner conductor is housed in the substrate-side dielectric. The tab of the movable-side inner conductor is connected to the substrate-side inner conductor in the substrate-side inner conductor. Prior art literature Patent Literature

[0003] Patent Document 1: Japanese Patent Application Publication No. 2022-30014 Summary of the invention Problems to be solved by the invention

[0004] In Patent Document 1, it is desired that the other inner conductors can be well connected to the inner conductor.

[0005] In view of this, an object of the present disclosure is to enable a mating inner conductor to be connected to an inner conductor housed in an insulator in a good manner. Solutions for solving problems

[0006] The coaxial connector disclosed herein is a coaxial connector for connecting to a coaxial connector on the other side having an inner conductor on the other side, and comprises: an inner conductor to be connected to the inner conductor on the other side; an insulator including a cylinder for accommodating the inner conductor; and an outer conductor surrounding the insulator, wherein the inner periphery of the cylinder is formed with ribs that locally protrude in the circumferential direction of the inner periphery of the cylinder and extend along the axial direction of the cylinder. Effects of the Invention

[0007] According to the present disclosure, an object is to satisfactorily connect a counterpart inner conductor to an inner conductor housed in an insulator. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a perspective view showing a device including the coaxial connector according to the embodiment. Figure 2 yes Figure 1 Cross-sectional view along line IIII. Figure 3 It is a perspective view showing a coaxial connector. Figure 4 It is a bottom view showing the coaxial connector. Figure 5 It is an exploded perspective view showing a coaxial connector. Figure 6 It is a three-dimensional diagram showing an insulator. Figure 7 yes Figure 4Cross-sectional view along line VI I-VI I. Figure 8 yes Figure 4 Cross-sectional view along line VIII-VIII. Fig. 9 yes Figure 3 IX-IX line cross-sectional view. DETAILED DESCRIPTION

[0009] [Description of Embodiments of the Present Disclosure] First, embodiments of the present disclosure will be described below.

[0010] The coaxial connector of the present disclosure is as follows.

[0011] (1) A coaxial connector is a coaxial connector for connecting to a coaxial connector on the other side having an inner conductor on the other side, comprising: an inner conductor to be connected to the inner conductor on the other side; an insulator including a cylinder portion for accommodating the inner conductor; and an outer conductor surrounding the insulator, wherein an inner peripheral portion of the cylinder portion is formed with a rib portion that partially protrudes in the circumferential direction of the inner peripheral portion of the cylinder portion and extends along the axial direction of the cylinder portion.

[0012] According to the present disclosure, the inner circumference of the barrel is formed with a rib that partially protrudes in the circumferential direction of the inner circumference of the barrel and extends in the axial direction of the barrel. Therefore, the gap between the inner conductor and the insulator can be reduced in the portion where the rib is formed. As a result, it is difficult for the other side inner conductor to be inserted between the inner conductor and the insulator by mistake, and the other side inner conductor can be well connected to the inner conductor housed in the insulator.

[0013] (2) In the coaxial connector of (1), the inner conductor may include a plurality of elastic pieces located at intervals in the circumferential direction, and the rib may be located between the plurality of elastic pieces in the circumferential direction.

[0014] At this time, since the rib is located between the plurality of elastic sheets on the circumferential direction of the inner circumference of the barrel, the rib is unlikely to hinder the elastic deformation of the plurality of elastic sheets. Thus, the other side inner conductor can be smoothly inserted between the plurality of elastic sheets. In addition, the rib is located between the plurality of elastic sheets and the inner circumference of the barrel, which can prevent the other side inner conductor from mistakenly entering between the inner conductor and the insulator.

[0015] (3) The coaxial connector of (2) may be configured such that the plurality of elastic pieces are located at equal intervals around the central axis of the cylindrical portion, and the connector may include a plurality of ribs located at equal intervals around the central axis of the cylindrical portion.

[0016] In this case, the plurality of elastic pieces can uniformly clamp the other-side inner conductor from its periphery. The plurality of ribs can uniformly suppress erroneous insertion of the other-side inner conductor between the plurality of elastic pieces.

[0017] (4) The coaxial connector of (2) or (3) may be that the inner conductor has a base end barrel portion located on the base end side of the barrel portion, the plurality of elastic sheets extend from the base end barrel portion toward the front end side of the barrel portion, and the rib portion is located in an area closer to the front end side of the barrel portion than the base end barrel portion.

[0018] According to this, since it is not necessary to form the avoidance rib in the base end cylinder portion, the processing of the base end cylinder portion becomes easy.

[0019] (5) In the coaxial connector of (4), the base end portion of the rib portion may have a slope that gradually moves toward the central axis of the barrel portion from the base end side of the barrel portion toward the front end side.

[0020] According to this, the elastic piece is less likely to be caught on the base end portion of the rib, and thus the inner conductor can be smoothly inserted into the cylindrical portion.

[0021] (6) The coaxial connector of (4) or (5) may be such that the base end cylinder has a positioning protrusion that partially protrudes toward the outer circumference in the circumferential direction thereof, and the cylinder has a positioning recess into which the positioning protrusion is inserted.

[0022] At this time, since the positioning protrusion is fitted into the positioning recess, the rib can be accurately positioned between the plurality of elastic pieces in the circumferential direction of the inner peripheral portion of the cylinder.

[0023] (7) Any one of the coaxial connectors of (4) to (6) may be formed with a positioning rib on the inner circumference of the barrel that partially protrudes in the circumferential direction, extends along the central axis of the barrel, and contacts the outer circumference of the base end barrel.

[0024] As described above, since the positioning rib contacts the outer peripheral portion of the base end cylinder, it is easy to support the base end cylinder at a fixed position in the cylinder.

[0025] (8) The coaxial connector of (7) may include a plurality of the positioning ribs, and the plurality of positioning ribs are evenly spaced around the central axis of the barrel. In this way, since the plurality of positioning ribs are evenly spaced around the central axis of the barrel and contact the base end barrel, it is easy to make the central axis of the barrel coincide with the central axis of the base end barrel.

[0026] (9) Any one of the coaxial connectors of (1) to (8) may be a coaxial connector wherein the insulator includes a front end guide portion located on the front end side of the barrel, the front end guide portion having an insertion hole having a diameter smaller than an inner diameter of the barrel, and the insertion hole having a guide surface that gradually decreases in diameter toward the inside of the barrel.

[0027] At this time, the other side inner conductor can be guided toward the inner conductor by the guide surface. Thus, the other side inner conductor is difficult to be inserted between the inner conductor and the insulator by mistake, and the other side inner conductor can be better connected to the inner conductor accommodated in the insulator.

[0028] (10) The coaxial connector of (9) may be such that the insertion hole has a guide surface of equal diameter extending from the peripheral edge of the guide surface on the cylindrical portion side toward the cylindrical portion.

[0029] In this case, the equal-diameter guide surface can more reliably guide the other inner conductor toward the inner conductor.

[0030] (11) In any one of the coaxial connectors of (1) to (10), the outer conductor may include an outer conductor conductive piece that can be inclined relative to the outer conductor of the other coaxial connector and conductively connected to the other outer conductor.

[0031] As described above, if the outer conductor terminal includes an outer conductor terminal conductive piece that can be in an inclined posture relative to the outer conductor of the other coaxial connector and can be conductively connected to the outer conductor of the other coaxial connector, the position error between the coaxial connector and the other coaxial connector can be absorbed. In this case, the inner conductor and the outer conductor of the other side can be in an inclined posture. Even so, it is difficult for the inner conductor of the other side to be inserted between the inner conductor and the insulator by mistake, and the inner conductor of the other side can be better connected to the inner conductor accommodated in the insulator.

[0032] [Details of the embodiments of the present disclosure] Specific examples of the coaxial connector of the present disclosure are described below with reference to the drawings. In addition, the present disclosure is not limited to these examples, but is shown by the claims, and is intended to include all changes within the equivalent meaning and scope of the claims.

[0033] [Implementation Method] A coaxial connector according to an embodiment will be described below. Figure 1 is a perspective view showing a device 10 including a coaxial connector 60 .

[0034] <About the overall structure of the equipment> The device 10 is, for example, a camera device. The camera device is, for example, a vehicle-mounted device. The device 10 may also not be a camera device.

[0035] The device 10 includes a housing 12 and an electric component 20. The electric component 20 is accommodated in the housing 12. The coaxial connector 60 is fixed to the electric component 20.

[0036] The housing 12 includes a first housing 13 and a second housing 14. The first housing 13 and the second housing 14 are formed of, for example, resin. The first housing 13 and the second housing 14 are integrated to form a cubic box-shaped housing 12 for accommodating the electrical components 20. If the device 10 is a camera device, it is conceivable that the first housing 13 has a lens or a window for taking a picture, and the second housing 14 has a coaxial connector 30 for external connection.

[0037] The external connection coaxial connector 30 is a coaxial connector for connecting the electrical component 20 to an external electrical component. The external connection coaxial connector 30 is, for example, a coaxial connector for connecting a cable connected to an external electrical component. The cable connected to the external connection coaxial connector 30 is, for example, a coaxial cable.

[0038] More specifically, a retaining cylinder 16 is protruding from the bottom 15 of the shell 12. The retaining cylinder 16 is a cylinder that protrudes outward from the center of the bottom 15. The inner opening of the retaining cylinder 16 opens toward the inside of the second shell 14, and the outer opening of the retaining cylinder 16 opens toward the outside of the second shell 14. A retaining partition 17 is formed in the middle portion in the central axis direction of the retaining cylinder 16. In the present embodiment, the retaining partition 17 is formed at a position close to the inner opening as the middle portion in the central axis X direction of the retaining cylinder 16. The space on the inner opening side and the space on the outer opening side in the retaining cylinder 16 are separated. The retaining partition 17 is formed with a retaining hole 17h, and the coaxial connector 30 for external connection is inserted and retained in the retaining hole 17h.

[0039] In the present embodiment, a locking projection 18a for holding a cable connector attached to an end portion of a cable is formed on the outer peripheral portion of the holding cylinder 16. The locking projection 18a is not necessarily formed.

[0040] The external connection coaxial connector 30 includes an external connection inner conductor 32 , an external connection insulator 34 , and an external connection outer conductor 36 .

[0041] The external connection inner conductor 32 is formed into a long and thin rod shape and is formed of a conductive material such as metal. The external connection insulator 34 is formed of an insulator such as resin and surrounds the external connection inner conductor 32. In the present embodiment, the external connection insulator 34 is a dielectric. The external connection outer conductor 36 is formed of a conductive material such as metal. The external connection outer conductor 36 is formed into a cylindrical shape surrounding the external connection insulator 34.

[0042] The electrical component 20 is, for example, a mounting substrate on which electronic components are mounted. If the device 10 is a camera device, the electrical component 20 can be assumed to be a circuit substrate 21 and an image pickup element 22 mounted on the circuit substrate 21. The image pickup element 22 is opposed to a lens or a window for image pickup of the first housing 13, and the outside scene is photographed by rotating the lens or the window. Hereinafter, the side of the first housing 13 facing the image pickup element 22 is sometimes referred to as the front side, and the side of the second housing 14 opposite thereto is sometimes referred to as the rear side.

[0043] In the present embodiment, the coaxial connector 60 is located on the surface of the circuit substrate 21 on the opposite side to the imaging element 22. The coaxial connector 60 is fixed to the circuit substrate 21 and protrudes from the circuit substrate 21 toward the coaxial connector 30 for external connection. The coaxial connector 60 is a substrate-side coaxial connector. The coaxial connector 60 includes, for example, an inner conductor 62, an insulator 70, and an outer conductor 90. The movable-side inner conductor 42 described later is connected to the inner conductor 62. The insulator 70 includes a cylindrical portion 72 for accommodating the inner conductor 62. The outer conductor 90 surrounds the insulator 70. That is, the inner conductor 62, the insulator 70, and the outer conductor 90 are arranged in this order in a concentric circle from the center to the outer peripheral side.

[0044] The coaxial connector 60 and the coaxial connector 30 for external connection are connected via the relay connector 40. The relay connector 40 includes, for example, a movable inner conductor 42, a movable insulator 44, and a movable outer conductor 46. The movable insulator 44 surrounds the movable inner conductor 42. It can be understood that a dielectric is a kind of insulator, and the movable insulator 44 can also be a dielectric. The movable outer conductor 46 surrounds the movable insulator 44. The movable inner conductor 42 is an example of an inner conductor on the other side connected to the inner conductor 62, the movable outer conductor 46 is an example of an outer conductor on the other side connected to the outer conductor 90, and the relay connector 40 is an example of a coaxial connector on the other side connected to the coaxial connector 60.

[0045] The relay connector 40 is connected to the coaxial connector 60 in a state where the movable-side inner conductor 42 is inserted and connected to the inner conductor 62, and the outer conductor 90 is inserted and connected to the movable-side outer conductor 46. In this state, the relay connector 40 further protrudes from the coaxial connector 60 toward the external connection coaxial connector 30. The external connection inner conductor 32 is inserted and connected to the movable-side inner conductor 42, and the movable-side outer conductor 46 is inserted and connected to the external connection outer conductor 36, and the relay connector 40 is connected to the external connection coaxial connector 30. In this way, the relay connector 40 relays the coaxial connector 60 and the external connection coaxial connector 30.

[0046] As a result, when an external cable is connected to the external connection coaxial connector 30 , an external electrical component that is a connection target of the cable is electrically connected to the electrical component 20 in the housing 12 .

[0047] In the connection state between the relay connector 40 and the coaxial connector 60, the movable side inner conductor 42 is inserted and connected to the inner conductor 62 in an inclined state. In addition, the outer conductor 90 is inserted and connected to the movable side outer conductor 46 in an inclined state. That is, the relay connector 40 can be connected to the coaxial connector 60 in an inclined state (see Figure 2 Thus, during the assembly operation or in the completed state of the device 10, even if the coaxial connector 60 and the external connection coaxial connector 30 are deviated from the coaxially opposed positions (refer to Figure 2 As shown in the arrow P2, the relay connector 40 is tilted relative to the coaxial connector 60, so that the misalignment can be absorbed.

[0048] <About coaxial connectors> The coaxial connector 60 will be described in detail. Figure 3 It is a perspective view showing the coaxial connector 60 . Figure 4 It is a bottom view showing the coaxial connector 60 . Figure 5 It is an exploded perspective view showing the coaxial connector 60 . Figure 6 It is a perspective view showing the insulator 70 . Figure 7 yes Figure 4 Cross-sectional view along line VI I-VI I. Figure 8 yes Figure 4 Cross-sectional view along line VIII-VIII. Fig. 9 yes Figure 3 The IX-IX line cross-sectional view. Fig. 9 The outer conductor 90 is omitted.

[0049] As described above, the coaxial connector 60 includes, for example, the inner conductor 62 , the insulator 70 , and the outer conductor 90 .

[0050] The inner conductor 62 is a thin and long conductive member (see Figure 5 , Figures 7 to 9 In the present embodiment, the inner conductor 62 is formed by punching a metal plate. More specifically, the inner conductor 62 includes a base end tube 64 and a plurality of elastic pieces 66.

[0051] The base end barrel portion 64 is formed in a cylindrical shape, more specifically, in a cylindrical shape. The base end barrel portion 64 is housed on the base end side of the barrel portion 72. In the coaxial connector 60, the front end is the end on the side to which the movable side inner conductor 42 is connected, and the base end is the end on the side opposite to the front end, and here, it is the end facing the circuit substrate 21 side.

[0052] The base end barrel 64 has a positioning protrusion 64P that partially protrudes toward the outer peripheral side in the circumferential direction. In the present embodiment, a slit 64S is formed in a part of the circumferential direction of the base end barrel 64. A pair of positioning protrusions 64P protrude toward the outer side of the base end barrel 64 from a pair of edges on both sides of the slit 64S in the base end barrel 64. The pair of positioning protrusions 64P are parallel to each other. The positioning protrusion 64P is not necessarily the above-mentioned structure. The positioning protrusion can be formed by deforming a part of the circumferential direction of the annular base end barrel so as to partially protrude toward the outer peripheral side. The positioning protrusion can be omitted.

[0053] An extension piece 64a extends from the proximal side edge of the proximal tube portion 64 toward the inside of the proximal tube portion 64. The extension piece 64a can be soldered to the circuit of the circuit substrate 21.

[0054] The base end barrel 64 is provided with a stopper protrusion 64b. The stopper protrusion 64b partially protrudes from the outer peripheral portion of the base end barrel 64. The stopper protrusion 64b is formed in a shape in which the protrusion size gradually increases from the front end of the base end barrel 64 toward the base end. In addition, the stopper protrusion 64b has a surface facing the base end side of the base end barrel 64. In the present embodiment, the surface of the stopper protrusion 64b facing the base end of the base end barrel 64 is a surface orthogonal to the central axis X of the base end barrel 64. In the present embodiment, the formation position of a pair of positioning protrusions 64P and a plurality of (here three) stopper protrusions 64b are located around the central axis X of the base end barrel 64 at equal intervals (here 90 degree intervals). In addition, the central axis X of the base end barrel 64 coincides with the central axis X of the barrel 72 of the insulator 70, and coincides with the central axis X of the coaxial connector 60 as a whole.

[0055] A plurality of elastic pieces 66 are spaced apart and located in the circumference of the barrel 72 inside the barrel 72. Preferably, a plurality of elastic pieces 66 are equally spaced around the central axis X of the barrel 72. Here, the so-called equal interval includes the sameness within the error range (for example, the same within the range of ±5 degrees around the central axis X). In the present embodiment, a plurality of elastic pieces 66 extend from one end edge of the base end barrel 64 at intervals in the circumference of the base end barrel 64. The base end barrel 64 is located on the base end side of the barrel 72, and a plurality of elastic pieces 66 extend toward the front end side of the barrel.

[0056] In the present embodiment, the plurality of elastic pieces 66 are two elastic pieces 66. Therefore, the two elastic pieces 66 extend from two opposite locations in the annular edge of one end of the base end barrel 64. That is, with the width center of the two elastic pieces 66 as a reference, the two elastic pieces 66 are located at positions 180 degrees apart in the circumferential direction of the barrel 72. In the circumferential direction of the base end barrel 64, there are two gaps between the two elastic pieces 66. The elastic piece 66 includes an intermediate piece 66a extending from the base end barrel 64, a contact portion 66b, and a guide piece 66c. The intermediate piece 66a is inclined toward the central axis X of the base end barrel 64 as it moves away from one end of the base end barrel 64. In addition, the intermediate piece 66a is formed so that the width gradually narrows toward the front end side. The contact portion 66b extends from the front end of the intermediate piece 66a toward a direction away from the base end barrel 64. The contact portion 66b is formed into a curved shape protruding toward the central axis X of the base end barrel 64. The guide piece 66c is connected to the front end of the contact portion 66b. The guide piece 66c is inclined so as to be farther away from the central axis X of the base end cylinder portion 64 as it is farther away from the base end cylinder portion 64. The front end edge of the guide piece 66c is rounded.

[0057] Since the two elastic pieces 66 are opposed to each other, the two contact portions 66b are opposed to each other. In addition, the two guide pieces 66c extend toward opposite sides. The movable-side inner conductor 42 inserted between the two elastic pieces 66 is guided toward between the two contact portions 66b by at least one of the two guide pieces 66c, and is in a state of being clamped by the two contact portions 66b. In this state, the portion of the two contact portions 66b closest to the central axis X of the base end barrel 64 contacts the movable-side inner conductor 42. Thus, the movable-side inner conductor 42 is maintained in a state of being electrically connected to the inner conductor 62. That is, the state in which the movable-side inner conductor 42 is clamped between the two contact portions 66b is a normal connection state between the movable-side inner conductor 42 and the inner conductor 62.

[0058] The contact portion 66b of the elastic piece 66 protrudes further toward the central axis X than other portions. Therefore, even if the movable-side inner conductor 42 is tilted relative to the inner conductor 62, portions other than the contact portion 66b of the elastic piece 66 are unlikely to interfere with the movable-side inner conductor 42. Therefore, even if the movable-side inner conductor 42 is tilted relative to the inner conductor 62, the pair of contact portions 66b can well clamp the movable-side inner conductor 42 to establish a normal connection state between the movable-side inner conductor 42 and the inner conductor 62.

[0059] Furthermore, there may be three or more elastic pieces 66. In this case, the state in which the movable-side inner conductor is arranged in the portion surrounded by the three or more elastic pieces may be regarded as the normal connection state.

[0060] The insulator 70 is formed of resin or the like. It can be understood that a dielectric is a type of insulator, and the insulator 70 may also be a dielectric. The insulator 70 is, for example, a molded resin component.

[0061] The insulator 70 includes a cylindrical portion 72 and a distal end guide portion 80 .

[0062] The barrel 72 is formed into a cylindrical structure capable of accommodating the inner conductor 62. In the present embodiment, the barrel 72 is formed into a cylindrical shape, and a cylindrical space 72S is formed inside the barrel 72. The cylindrical space 72S is formed to be able to accommodate the entire inner conductor 62. Here, the length of the cylindrical space 72S is greater than the length of the inner conductor 62. The inner diameter of the cylindrical space 72S is the same as or greater than the outer diameter of the base end barrel 64.

[0063] As described above, the base end barrel 64 is accommodated on the base end side of the cylindrical space 72S. A positioning recess 72G is formed in the barrel 72 for the positioning protrusion 64P to be embedded. The positioning recess 72G is a recess partially recessed from the inner circumference 73 of the cylindrical space 72S. The positioning recess 72G is also open to the outside of the base end side of the insulator 70. The width of the positioning recess 72G is the same as or larger than the width between the outward surfaces of a pair of positioning protrusions 64P. In the state where the base end barrel 64 is accommodated on the base end side of the cylindrical space 72S, the positioning protrusion 64P is embedded in the positioning recess 72G. As a result, the posture of the inner conductor 62 relative to the barrel 72 is kept constant around the central axis X of the barrel 72. This posture is a posture in which the rib 74 described later is located between the plurality of elastic pieces 66 in the circumferential direction of the inner circumference 73 of the barrel 72.

[0064] The plurality of elastic pieces 66 are accommodated in the cylindrical space 72S at a position closer to the distal end than the portion where the base end cylinder 64 is arranged. The inner circumference 73 of the cylinder 72 is formed with a rib 74. The rib 74 partially protrudes in the circumferential direction of the inner circumference 73 and extends in the direction of the central axis X of the cylinder 72.

[0065] The ribs 74 are located between the plurality of elastic sheets 66 in the circumferential direction of the inner circumference 73. The ribs 74 are preferably located at equal intervals around the central axis X of the cylinder 72, with the center of the ribs 74 in the width direction as a reference. In the present embodiment, two ribs 74 are formed on the inner circumference 73 because there are two gaps between the two elastic sheets 66 in the circumferential direction of the inner circumference 73. Preferably, the ribs 74 are located at the center of the two elastic sheets 66 in the circumferential direction of the inner circumference 73, and the intervals between the ribs 74 and the two adjacent elastic sheets 66 are kept the same. If the inner conductor has more than three elastic sheets, more than three ribs may be formed. Ribs are not necessarily provided in all the gaps between the plurality of elastic sheets.

[0066] The rib 74 is located in the inner circumference 73 in a region closer to the distal end than the region where the base end tube 64 is located. That is, the rib 74 protrudes between the elastic pieces 66, but does not protrude from the inner circumference 73 in the region where the base end tube 64 is arranged. Therefore, the base end tube 64 does not need to be formed with a recess corresponding to the rib 74, and the base end tube 64 can be made to have a shape as simple as possible.

[0067] The base end of the rib 74 has an inclined surface 74f that gradually faces the central axis X of the barrel 72 from the base end side to the front end side of the barrel 72. That is, the inclined surface 74f is a surface that gradually reduces the protruding dimension of the base end of the rib 74. Since the inclined surface 74f is a surface inclined with respect to the central axis X of the barrel 72, when the inner conductor 62 is inserted into the barrel 72, the front end of the inner conductor 62 is unlikely to be hooked on the base end of the rib 74, and the inner conductor 62 can be easily inserted into the barrel 72. Since the base end of the rib 74 contacts the base end barrel 64 from the front end side, it helps to position the base end barrel 64.

[0068] In this embodiment, the surface of the rib 74 on the central axis X side is formed as an arcuate surface with the central axis X as the center of curvature. The surface of the rib 74 on the central axis X side may be a flat surface or a curved surface bulging toward the central axis X side.

[0069] A positioning rib 76 is formed on the inner circumference 73 of the cylinder 72. The positioning rib 76 partially protrudes in the circumferential direction of the inner circumference 73 and extends in the direction of the central axis X of the cylinder 72. The cross section of the positioning rib 76 (a cross section in a direction perpendicular to the longitudinal direction) is, for example, semicircular or U-shaped. The protruding dimension of the positioning rib 76 relative to the inner circumference 73 is smaller than the protruding dimension of the rib 74 relative to the inner circumference 73.

[0070] The positioning rib 76 is formed at a position avoiding the rib 74 in the inner peripheral portion 73. In addition, the rib 74 is formed at a position avoiding the outer peripheral side of the elastic piece 66 in the inner peripheral portion 73. That is, in the circumferential direction of the inner peripheral portion 73, the positioning rib 76 is located between the elastic piece 66 and the rib 74 (see Fig. 9 ).

[0071] The positioning rib 76 is formed in the entire longitudinal direction of the inner circumference 73 of the barrel 72. When the base end barrel 64 is arranged in the base end of the barrel 72, the top of the positioning rib 76 can contact the outer circumference of the base end barrel 64. As a result, the base end barrel 64 can be positioned at a constant position in the inner circumference 73. The tops of a plurality of (here four) positioning ribs 76 are evenly spaced (here 90 degrees around the central axis X) to contact the outer circumference of the base end barrel 64, so that the base end barrel 64 is easily positioned so that the inner circumference 73 and the base end barrel 64 are coaxially arranged. The positioning rib 76 does not have to extend toward between the elastic sheets 66.

[0072] Furthermore, it is not necessary to form a plurality of positioning protrusions 64P on the inner peripheral portion 73. It is not necessary to form a plurality of positioning protrusions 64P around the central axis X at equal intervals.

[0073] The front end guide portion 80 is located at the front end side of the cylinder portion 72. The front end guide portion 80 has an insertion hole 84 having a diameter smaller than the inner diameter of the inner peripheral portion 73 of the cylinder portion 72. The central axis X of the cylinder portion 72 and the central axis X of the insertion hole 84 coincide with each other.

[0074] The insertion hole 84 has a tapered guide surface 84a that gradually decreases in diameter toward the inside of the barrel 72. The maximum diameter of the outer side of the guide surface 84a is, for example, larger than the maximum development width of the pair of guide pieces 66c, and larger than the outer diameter of the base end barrel 64. The minimum diameter of the inner side of the guide surface 84a is, for example, set to be smaller than the outer diameter of the base end barrel 64 and to the same extent as the maximum development width of the pair of guide pieces 66c (for example, within the range of ±2 mm). Therefore, the front end of the movable side inner conductor 42 is guided toward between the plurality of elastic pieces 66 by the guide surface 84a.

[0075] In addition, the insertion hole 84 also has an equal-diameter guide surface 84b extending from the peripheral edge of the guide surface 84a on the side of the cylinder 72 toward the cylinder 72. The center axis X of the equal-diameter guide surface 84b coincides with the center axis X of the cylinder. The equal-diameter guide surface 84b is formed in a shape in which the minimum diameter portion inside the guide surface 84a is continuous along the center axis X.

[0076] Therefore, after the front end portion of the movable inner conductor 42 is guided toward the central axis X along the guide surface 84 a , it is restrained by the equal-diameter guide surface 84 b so as not to be displaced toward the outer circumference and is guided toward between the plurality of elastic pieces 66 .

[0077] By continuously forming the equal-diameter guide surface 84b from the guide surface 84a, it is not necessary to sharpen the edge of the minimum diameter side of the guide surface 84a. As a result, the guide surface 84a is less likely to be damaged or deformed, and the guiding function of the guide surface 84a can be well maintained. In addition, the equal-diameter guide surface 84b can be omitted.

[0078] In the present embodiment, the outer periphery of the front end guide portion 80 protrudes further than the barrel portion 72. The outer periphery of the front end guide portion 80 is formed as an outer periphery side guide surface 85 whose diameter gradually increases toward the barrel portion 72. The outer periphery side guide surface 85 can play a role in guiding the cylindrical portion of the movable side outer conductor 46 toward the outside of the outer conductor 90. The outer periphery of the front end guide portion 80 does not necessarily protrude further than the barrel portion 72.

[0079] The inner conductor 62 is assembled to the insulator 70 in the following manner. The base end barrel 64 is inserted into the inner circumference 73 of the barrel 72 from its base end side opening. Thereafter, the inclined surface of the locking protrusion 64b pushes the base end side opening edge and the inner circumference of the inner circumference 73. Thus, the base end barrel 64 is pushed into the inner circumference 73. At this time, a pair of positioning protrusions 64P are embedded in the positioning recess 72G of the barrel 72. The base end barrel 64 is pushed into the inner circumference 73 of the barrel 72 until the pair of positioning protrusions 64P contact the inner surface of the positioning recess 72G. In this state, the top of the locking protrusion 64b bites into the inner circumference 73. In particular, the surface of the locking protrusion 64b facing the base end side of the base end barrel 64 bites into the inner circumference 73 and is locked to prevent the base end barrel 64 from coming out. Thus, the base end of the base end barrel 64 is retained in the inner circumference 73 of the barrel 72. In this state, each elastic piece 66 extends from the base end tube portion 64 toward the distal end side, and is arranged between the base end tube portion 64 and the distal end guide portion 80 in the inner peripheral portion 73 .

[0080] The outer conductor 90 is formed of a conductive material such as metal, and surrounds the insulator 70 such as metal. The outer conductor 90 is formed by, for example, stamping a metal plate. In the present embodiment, the outer conductor 90 includes an outer conductor tube 92 and an outer conductor conductive piece 94 .

[0081] The outer conductor barrel 92 is formed into a cylindrical shape in which the barrel 72 can be placed. The outer conductor barrel 92 is formed with a locking protrusion 92a that partially protrudes inward. When the barrel 72 is placed in the outer conductor barrel 92, the locking protrusion 92a bites into and is locked to the outer periphery of the barrel 72, so that the outer conductor barrel 92 can be supported at a fixed position of the barrel 72.

[0082] A plurality of outer conductor conductive pieces 94 extend from the annular edge portion on the front end side of the outer conductor cylindrical portion 92. The plurality of outer conductor conductive pieces 94 are arranged so as to surround the outer periphery of the cylindrical portion 72. The outer conductor conductive pieces 94 are inclined toward the outer periphery as they approach the front end side, and are inclined toward the inner periphery midway. The top 94a of the outer conductor conductive piece 94 that protrudes to the outermost side is a contact point that contacts the inner periphery of the cylindrical portion of the movable side outer conductor 46. The portion of the outer conductor conductive piece 94 that is closer to the front end side than the top 94a is a portion that guides the cylindrical portion of the movable side outer conductor 46 toward the top 94a.

[0083] As described above, the top portion 94a protrudes toward the outer circumference relative to the front end portion and the base end portion thereof. Therefore, even if the outer conductor tube portion 92 is inclined relative to the movable outer conductor 46, the top portion 94a of the outer conductor conductive piece 94 can contact and conduct with the inner circumference of the tube portion of the movable outer conductor 46.

[0084] <About the connection operation of the relay connector and the coaxial connector> The following describes the connection operation in the cross section passing through the central axis X and the elastic piece 66. As described above, the relay connector 40 may be misaligned with respect to the coaxial connector 60. Therefore, the central axis of the relay connector 40 may be located at a different position from the central axis X of the coaxial connector 60 or may be tilted.

[0085] like Figure 8 As shown in FIG. 1 , when the center axis of the movable side inner conductor 42 of the relay connector 40 is located at a position different from the center axis X of the coaxial connector 60 or is tilted, the front end portion of the movable side inner conductor 42 contacts the guide surface 84a and is guided toward the center axis X of the coaxial connector 60 (see arrow F1). As a result, the movable side inner conductor 42 is guided toward between the plurality of elastic pieces 66. In particular, since the elastic piece 66 has the guide piece 66c, the movable side inner conductor 42 can be more reliably guided toward between the contact portions 66b. In this cross section, once the movable side inner conductor 42 is guided toward between the plurality of elastic pieces 66, it will not fall out from between the plurality of elastic pieces 66 and can remain arranged between the plurality of elastic pieces 66.

[0086] The following describes the connection operation in the cross section passing through the central axis X and between the plurality of elastic pieces 66. As described above, the central axis of the relay connector 40 may be located at a different position from the central axis X of the coaxial connector 60 or may be inclined.

[0087] Even so, Figure 7 As shown, when the center axis of the movable-side inner conductor 42 of the relay connector 40 is located at a position different from the center axis X of the coaxial connector 60 or is inclined, the front end portion of the movable-side inner conductor 42 contacts the guide surface 84a and is guided toward the center axis X of the coaxial connector 60. However, if the center axis of the movable-side inner conductor 42 is inclined relative to the center axis X of the coaxial connector 60, it is conceivable that the front end portion of the movable-side inner conductor 42 is pushed in a manner deviating from between the plurality of elastic pieces 66 toward the inner peripheral wall side of the barrel 72.

[0088] At this time, if the rib 74 is omitted, a gap of dimension W1 (see Figure 7 If the dimension W1 is large, it is conceivable that the movable inner conductor 42 enters the gap (refer to Figure 7 As shown in the arrow F2, the movable inner conductor 42 is easy to come out from between the plurality of elastic pieces 66. In addition, the movable inner conductor 42 may come out from between the plurality of elastic pieces 66 and be stably located between the side edge of the elastic piece 66 and the inner peripheral wall side of the cylinder 72.

[0089] On the other hand, if the rib 74 is provided on the inner peripheral portion 73, the dimension W2 between the elastic piece 66 and the front end of the rib 74 can be made smaller (see Figure 7) is smaller than the above-mentioned dimension W1. That is, the dimension W2 is smaller than the dimension W1 by the protruding dimension of the rib 74. Therefore, compared with the case where the rib 74 is omitted, the movable-side inner conductor 42 is more likely to slip out from between the plurality of elastic pieces 66. In addition, it is difficult to form a space between the elastic piece 66 and the inner circumference of the barrel 72 in which the movable-side inner conductor 42 can be stably located.

[0090] Therefore, the movable-side inner conductor 42 can be stably arranged between the plurality of elastic pieces 66 , and the movable-side inner conductor 42 and the elastic pieces 66 can be easily connected to each other normally.

[0091] <Effects, etc.> According to the coaxial connector 60 having the above-described structure, the inner peripheral portion 73 of the barrel 72 is formed with a rib 74 that partially protrudes in the circumferential direction of the inner peripheral portion 73 and extends in the axial direction of the barrel 72 (here, in line with the central axis X). Therefore, the gap between the inner conductor 62 and the insulator 70 can be reduced by the portion where the rib 74 is formed. As a result, the movable-side inner conductor 42, which is the conductor on the other side, is less likely to be inserted between the inner conductor 62 and the insulator 70 by mistake, and the movable-side inner conductor 42 can be well connected to the inner conductor 62 housed in the insulator 70. As a result, poor connection between the coaxial connector 60 and the relay connector 40 can be suppressed.

[0092] In particular, since the ribs 74 are located between the plurality of elastic pieces 66 in the circumferential direction of the inner circumference 73, the ribs 74 are unlikely to hinder the elastic deformation of the plurality of elastic pieces 66. That is, the ribs 74 are not formed on the outer circumferential side of the elastic piece 66, and there is a gap larger than the portion where the ribs 74 are formed. Therefore, when the movable-side inner conductor 42 is inserted between the plurality of elastic pieces 66, the elastic piece 66 can be elastically deformed smoothly toward the outer circumferential side. Thus, the movable-side inner conductor 42 can be smoothly inserted between the plurality of elastic pieces 66. In addition, the ribs 74 between the plurality of elastic pieces 66 and the inner circumference 73 can prevent the movable-side inner conductor 42 from mistakenly entering between the inner conductor 62 and the insulator 70.

[0093] In addition, the plurality of elastic pieces 66 are located at equal intervals around the central axis X, and the ribs 74 are also located at equal intervals around the central axis X. Therefore, the plurality of elastic pieces 66 can uniformly clamp the movable-side inner conductor 42 from the periphery thereof, and the movable-side inner conductor 42 and the inner conductor 62 can be well electrically connected. In addition, the plurality of ribs 74 can uniformly suppress erroneous insertion of the movable-side inner conductor 42 between the plurality of elastic pieces 66.

[0094] In addition, since the rib 74 is located in the region of the barrel 72 closer to the distal end than the base end barrel 64, it is not necessary to form a shape that avoids the rib 74 on the base end barrel 64. This makes it easier to process the base end barrel 64.

[0095] Furthermore, since the base end of the rib 74 has the slope 74 f that is inclined toward the central axis X toward the distal end, the elastic piece 66 is less likely to be caught on the base end of the rib 74 when the inner conductor 62 is inserted into the insulator 70 , and the inner conductor 62 can be smoothly inserted into the cylinder 72 .

[0096] The base end cylinder 64 has a positioning protrusion 64P, and the cylinder 72 has a positioning recess 72G into which the positioning protrusion 64P fits. Therefore, the rib 74 can be accurately positioned between the plurality of elastic pieces 66 in the circumferential direction of the inner peripheral portion 73 of the cylinder 72 by fitting the positioning protrusion 64P into the positioning recess 72G.

[0097] In addition, a positioning rib 76 is formed on the inner periphery of the barrel 72. The positioning rib 76 contacts the outer periphery of the base end barrel 64, so that the base end barrel 64 can be easily supported at a constant position in the barrel 72. If the entire inner periphery of the barrel is in seamless contact with the entire outer periphery of the base end barrel and the barrel is positioned, it is difficult to insert the base end barrel into the barrel when the base end barrel is slightly misaligned or tilted relative to the barrel. If the positioning rib 76 is used as a partially protruding portion to position the base end barrel 64, by utilizing the gap between the positioning ribs 76 in the circumferential direction, or by deforming the positioning rib 76, the barrel 72 can receive the base end barrel 64 even if the base end barrel 64 is slightly misaligned or tilted relative to the barrel 72.

[0098] The plurality of positioning ribs 76 are evenly spaced around the central axis X, making it easy to align the central axis of the tube 72 with the central axis of the base end tube 64. Furthermore, since the plurality of positioning ribs 76 can be deformed, the base end tube 64 can be easily inserted.

[0099] In addition, the insulator 70 includes a front end guide portion 80 located at the front end side of the barrel portion 72, and the front end guide portion 80 has an insertion hole 84 having a diameter smaller than the inner diameter of the barrel portion 72. The insertion hole 84 has a guide surface 84a whose diameter gradually decreases toward the inside of the barrel portion 72. Therefore, the movable-side inner conductor 42 is guided toward the inner conductor 62 by the guide surface 84a. As a result, it is difficult for the movable-side inner conductor 42 to be inserted between the inner conductor 62 and the insulator 70 by mistake, and the movable-side inner conductor 42 can be better connected to the inner conductor 62 accommodated in the insulator 70.

[0100] In addition, the insertion hole 84 has a constant diameter guide surface 84b extending from the peripheral edge of the guide surface 84a on the side of the cylinder 72 toward the cylinder 72. Therefore, the constant diameter guide surface 84b can more reliably guide the movable-side inner conductor 42 toward the inner conductor 62. In addition, the peripheral edge of the guide surface 84a on the side of the cylinder 72 is less likely to be deformed or damaged.

[0101] In addition, the outer conductor 90 includes an outer conductor conductive piece 94 that can be in an inclined posture with respect to the movable-side outer conductor 46 and can be conductive with the movable-side outer conductor 46. Thus, it is possible to absorb the positional error between the coaxial connector 60 and the relay connector 40. At this time, it can be considered that the inner conductor 62 is in an inclined posture with respect to the movable-side inner conductor 42. Even so, it is difficult for the movable-side inner conductor 42 to be inserted between the inner conductor 62 and the insulator 70 by mistake, and the movable-side inner conductor 42 can be well connected to the inner conductor 62 housed in the insulator 70.

[0102] [Modifications] The structure of the rib 74 of the coaxial connector 60 is also applicable to the relay connector 40 or the external connection coaxial connector 30. The coaxial connector 60 is also applicable to connection between coaxial connectors that are not based on the device 10.

[0103] Even if the elastic pieces of the inner conductor are not located at intervals in the circumferential direction, the other inner conductor is less likely to be mistakenly inserted between the inner conductor and the insulator in the portion provided with the ribs 74. Therefore, the inner conductor does not necessarily have to include a plurality of elastic pieces located at intervals in the circumferential direction.

[0104] Furthermore, the configurations described in the above-mentioned embodiments and modifications may be appropriately combined within a range that does not contradict each other. Description of Reference Numerals

[0105] 10. Equipment 12 Housing 131st Shell 14 Second Shell 15 Bottom 16 Holding cylinder 17 Keep the divider 17h Keep hole 18a Locking protrusion 20 Electrical components 21 Circuit board 22 Camera Components 30 Coaxial connector for external connection 32 Inner conductor for external connection 34 Insulator for external connection 36 External conductor for external connection 40 relay connector (coaxial connector on the other side) 42 Movable inner conductor (other side inner conductor) 44 Movable side insulator 46 Movable side outer conductor (other side outer conductor) 60 Coaxial Connector 62 Inner conductor 64 Base end tube 64P positioning convex part 64S Slit 64a Extension piece 64b: locking protrusion 66 elastic sheet 66a Intermediate film 66b Contact part 66c Guide Plate 70 Insulator 72 barrel 72G positioning recess 72S cylindrical space 73 Inner Periphery 74 Ribs 74f bevel 76 Positioning ribs 80 Front guide 84 Insertion hole 84a Guide surface 84b Equal diameter guide surface 85 Outer peripheral guide surface 90 Outer conductor 92 outer conductor tube 92a Locking protrusion 94 outer conductor lead-through sheet 94a Top X Center Axis

Claims

1. A coaxial connector for connecting to a coaxial connector of a counterpart having an inner conductor of the counterpart, comprising: An inner conductor, for connecting the inner conductor on the other side; an insulator, comprising a cylindrical portion for accommodating the inner conductor; and An outer conductor, surrounding the insulator, The inner peripheral portion of the cylindrical portion is formed with a rib portion that partially protrudes in the circumferential direction of the inner peripheral portion of the cylindrical portion and extends in the axial direction of the cylindrical portion.

2. The coaxial connector according to claim 1, wherein: The inner conductor has a plurality of elastic pieces located at intervals in the circumferential direction. The rib is located between the plurality of elastic pieces in the circumferential direction.

3. The coaxial connector according to claim 2, wherein: The plurality of elastic sheets are located at equal intervals around the central axis of the cylinder. A plurality of the ribs are provided, The plurality of ribs are located at equal intervals around a central axis of the cylindrical portion.

4. The coaxial connector according to claim 2 or claim 3, wherein: The inner conductor has a base end barrel portion located on the base end side of the barrel portion, and the plurality of elastic pieces extend from the base end barrel portion toward the front end side of the barrel portion. The rib portion is located in a region closer to the front end side of the tube portion than the base end tube portion.

5. The coaxial connector according to claim 4, wherein: The base end portion of the rib portion has a slope that gradually moves toward the central axis of the cylindrical portion from the base end side toward the front end side of the cylindrical portion.

6. The coaxial connector according to claim 4, wherein: The base end tube portion has a positioning protrusion that partially protrudes toward the outer peripheral side in the circumferential direction thereof. The cylindrical portion has a positioning recessed portion into which the positioning protruding portion is inserted.

7. The coaxial connector according to claim 4, wherein: The inner peripheral portion of the cylindrical portion is formed with a positioning rib that partially protrudes in the circumferential direction, extends along the central axis of the cylindrical portion, and contacts the outer peripheral portion of the base end cylindrical portion.

8. The coaxial connector according to claim 7, wherein: A plurality of positioning ribs are provided, The plurality of positioning ribs are located at equal intervals around a central axis of the cylindrical portion.

9. The coaxial connector according to any one of claims 1 to 3, wherein: The insulator includes a front end guide portion located at the front end side of the barrel portion, the front end guide portion having an insertion hole having a diameter smaller than the inner diameter of the barrel portion, The insertion hole has a guide surface whose diameter gradually decreases toward the inside of the cylinder.

10. The coaxial connector according to claim 9, wherein: The insertion hole has a guide surface of equal diameter extending from a peripheral edge of the guide surface on the cylindrical portion side toward the cylindrical portion.

11. The coaxial connector according to any one of claims 1 to 3, wherein: The outer conductor includes an outer conductor conductive piece that can be inclined relative to the outer conductor of the counterpart coaxial connector and conductively connected to the counterpart outer conductor.

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