Coaxial connector

Abstract

To provide a coaxial connector that improves the connection stability between the central conductor of a coaxial cable and a mounting portion of an inner terminal.SOLUTION: A coaxial connector 10 is provided with an internal terminal 14, an external terminal 16, and an insulating member 12. The internal terminal 14 has a first connection arm portion 14b and a second connection arm portion 14c extending along the extension direction of a coaxial cable 40. The first connection arm portion 14b and the second connection arm portion 14c each have a first mounting portion 14f and a second mounting portion 14m on the side of the coaxial cable 40. A first slit 14g and a second slit 14n for receiving a central conductor 41 are formed in the first mounting portion 14f and the second mounting portion 14m, respectively. The first mounting portion 14f and the second mounting portion 14m are located at different positions in the extension direction.SELECTED DRAWING: Figure 7

Description

[Technical field]

[0001] The present disclosure relates to coaxial connectors. [Background technology]

[0002] For example, Patent Document 1 discloses that an insulator covering a central conductor of a coaxial cable is pressed against an attachment portion of an internal terminal of a coaxial connector, and the attachment portion cuts a slit in the insulator, thereby forming a connection between the central conductor and the attachment portion. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2010-80262 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the coaxial connector of Patent Document 1, the coaxial cable is pressed against the internal terminal by crimping, but depending on the stress load conditions during crimping, the connection position between the central conductor and the mounting portion may fluctuate, which may result in poor connection.

[0005] An object of the present disclosure is to provide a coaxial connector that improves the connection stability between the central conductor of a coaxial cable and the mounting portion of an inner terminal. [Means for solving the problem]

[0006] In order to solve the above problems, a coaxial connector according to one aspect of the present disclosure comprises: an inner terminal connected to a central conductor of the coaxial cable; an external terminal having a base portion on which a crimping engagement portion is formed to be connected to an outer conductor of the coaxial cable; an insulating member disposed between the internal terminal and the external terminal and configured to accommodate the internal terminal, the internal terminal has a first connection arm portion and a second connection arm portion extending along an extending direction of the coaxial cable, the first connecting arm portion and the second connecting arm portion each have a first mounting portion and a second mounting portion on a side of the coaxial cable; a first slit and a second slit for receiving the central conductor are formed in the first mounting portion and the second mounting portion, respectively; The first attachment portion and the second attachment portion are located at different positions in the extending direction.

[0007] In addition, a coaxial connector according to another aspect of the present disclosure includes: an inner terminal connected to a central conductor of the coaxial cable; an external terminal having a base portion on which a crimping engagement portion is formed to be connected to an outer conductor of the coaxial cable; an insulating member disposed between the internal terminal and the external terminal and configured to accommodate the internal terminal, the inner terminal has a connection arm portion extending along an extending direction of the coaxial cable, the connecting arm portion has a first attachment portion and a second attachment portion on a side of the coaxial cable, a first slit and a second slit for receiving the central conductor are formed in the first mounting portion and the second mounting portion, respectively; The first mounting portion and the second mounting portion are characterized in that their positions in the extension direction are different, and that the first direction in which the first slit extends and the second direction in which the second slit extends are different. Effect of the Invention

[0008] According to the present disclosure, by providing two different connection positions, namely, a first connection position between the center conductor and the first mounting portion and a second connection position between the center conductor and the second mounting portion, connection redundancy is achieved, thereby improving the connection stability between the center conductor of the coaxial cable and the mounting portion of the internal terminal. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a perspective view of a coaxial connector set according to the present disclosure. [Diagram 2] 2 is a front view of a coaxial connector in the coaxial connector set shown in FIG. 1. [Diagram 3] 3 is a rear view of the coaxial connector shown in FIG. 2. [Figure 4] FIG. 3 is a side view of the coaxial connector shown in FIG. 2. [Diagram 5] FIG. 3 is a perspective view of the coaxial connector shown in FIG. 2. [Figure 6] 6 is a schematic cross-sectional view of the coaxial connector shown in FIG. 5 taken along line VI-VI. [Figure 7] FIG. 1 is an exploded perspective view of a coaxial connector according to a first embodiment. [Figure 8] 8 is a perspective view illustrating a connection in the coaxial connector shown in FIG. 7. [Figure 9] FIG. 2 is a cross-sectional view of a coaxial cable. [Figure 10] FIG. 11 is an exploded perspective view of a coaxial connector according to a second embodiment. [Figure 11] 11 is a perspective view illustrating a connection in the coaxial connector shown in FIG. [Figure 12] FIG. 11 is an exploded perspective view of a coaxial connector according to a third embodiment. [Figure 13] 13 is a diagram illustrating the relationship between a first attachment portion and a second attachment portion in the coaxial connector shown in FIG. 12. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, the L-type coaxial connector 10 according to the present disclosure will be described with reference to the drawings. For convenience of explanation, each drawing shows an X-axis, a Y-axis, and a Z-axis which are orthogonal to each other. The X-axis direction is the direction in which the coaxial cable 40 extends. The Z-axis direction is the direction in which the housing 16, the bushing 12, and the socket 14 are stacked in the L-type coaxial connector 10, and is the direction in which the L-type coaxial connector 10 is inserted into and removed from the mating connector 20. The Y-axis direction is the direction perpendicular to the X-axis direction and the Z-axis direction.

[0011] [Coaxial connector set] FIG. 1 is a perspective view of a coaxial connector set 1 according to the present disclosure.

[0012] As shown in Fig. 1, the coaxial connector set 1 includes an L-type coaxial connector (coaxial connector) 10 and a mating connector 20. The L-type coaxial connector 10 is configured to be fitted to the mating connector (receptacle) 20 so as to be insertable and removable in the Z-axis direction. In the coaxial connector set 1 shown in Fig. 1, the L-type coaxial connector 10 and the mating connector 20 are fitted to each other by moving the mating connector 20 in the Z-axis direction toward the mating connector 20 while the L-type coaxial connector 10 faces the mating connector 20. The L-type coaxial connector 10 is connected to the coaxial cable 40 by crimping, while the mating connector 20 is mounted on a circuit board (not shown).

[0013] [Coaxial cable] 9, the coaxial cable 40 connected to the L-shaped coaxial connector 10 is composed of a central conductor 41, an insulator 42, an outer conductor 43, and an outer coating 44. The central conductor 41 may be a solid or stranded wire made of, for example, soft copper, tin-plated soft copper, copper alloy, aluminum, aluminum alloy, CP wire (copper-clad iron wire), or the like.

[0014] The insulator 42 is provided around the central conductor 41. The insulator 42 is made of a resin material having a relative dielectric constant of 2 or more and 2.3 or less and a Rockwell hardness of 50 to 100, for example, polymethylpentene. Therefore, the insulator 42 has a large hardness and can resist deformation due to crimping, and can prevent adverse effects on the characteristic impedance. Note that the Rockwell hardness (HR) in this disclosure is measured according to the method specified in ASTM-D785, and the measured value is displayed on the R scale.

[0015] The outer conductor 43 is provided around the insulator 42. As the outer conductor 43, for example, soft copper, tin-plated soft copper, aluminum alloy, or a synthetic resin fiber having a metal layer on the outer periphery thereof can be used.

[0016] The outer coating 44 is provided around the outer conductor 43. The outer coating 44 may be made of, for example, polyvinyl chloride resin, fluororesin, polyethylene, polypropylene, olefin resin such as propylene-ethylene copolymer, ethylene-propylene rubber, butadiene rubber, or the like.

[0017] 7, the outer coating 44 is removed at the tip of the coaxial cable 40 to expose the outer conductor 43. Furthermore, the outer conductor 43 is removed at the tip of the coaxial cable 40 to expose the insulator 42.

[0018] [Matching connector] As shown in FIG. 1, the mating connector 20 includes a mating internal terminal (center pin) 24, a mating external terminal 26, and a mating insulating member (resin mold) 22 arranged between the mating internal terminal 24 and the mating external terminal 26.

[0019] The mating internal terminal 24 is connected to a signal land portion of a circuit board (not shown). The mating internal terminal 24 is electrically insulated from the mating external terminal 26 by the mating insulating member 22.

[0020] The mating internal terminal 24 is made of a conductive material, for example, a single metal plate such as a copper alloy material. The surface of the mating internal terminal 24 is plated with nickel and gold. The mating internal terminal 24 is integrated with the mating insulating member 22 by, for example, insert molding. With this configuration, the mating insulating member 22 and the mating internal terminal 24 can be accurately positioned.

[0021] The mating internal terminal 24 includes a mating internal contact portion 24a and a mating internal mounting portion (not shown). The mating internal terminal 24 is bent into an L-shape in cross section.

[0022] The mating internal contact portion 24a is configured as a male type (pin type) having a substantially cylindrical shape extending in the Z-axis direction. The mating internal contact portion 24a contacts and is electrically connected to the internal contact portion 14a of the internal terminal 14 of the L-type coaxial connector 10. The mating internal mounting portion is electrically connected to a signal land portion of a circuit board (not shown) by a conductive member such as solder.

[0023] The mating external terminal 26 is connected to a ground land portion of a circuit board (not shown). The mating external terminal 26 is made of a conductive material, for example, a single metal plate such as a copper alloy material. After fabrication, the surface of the mating external terminal 26 is plated with nickel and gold. The mating external terminal 26 is integrated with the mating insulating member 22 by insert molding. This configuration allows accurate positioning between the mating insulating member 22 and the mating external terminal 26.

[0024] The counterpart external terminal 26 includes a counterpart external mounting portion 26a and a counterpart second external connection portion 26b. The counterpart external mounting portion 26a is electrically connected to a ground land portion of a circuit board (not shown) by a conductive member such as solder.

[0025] The mating second external connection portion 26b is substantially cylindrical and extends in the Z-axis direction. The mating second external connection portion 26b is arranged coaxially with the mating internal contact portion 24a. The mating second external connection portion 26b contacts and is electrically connected to the second external connection portion 16b of the external terminal 16 of the L-shaped coaxial connector 10. A fitting recess 26h is formed on the outer circumferential surface of the mating second external connection portion 26b. When the L-shaped coaxial connector 10 is fitted into the mating connector 20, the fitting recess 26h of the mating second external connection portion 26b fits into the fitting protrusion 16h of the second external connection portion 16b.

[0026] [L-type coaxial connector] As shown in FIGS. 2 to 8, the L-shaped coaxial connector 10 has an insulating member (bushing) 12, an inner terminal (socket) 14, and an outer terminal (housing) 16.

[0027] The inner terminal 14 is connected to the central conductor 41 of the coaxial cable 40. The inner terminal 14 is electrically insulated from the outer terminal 16 by the insulating member 12.

[0028] The internal terminal 14 is made of a conductive material, for example, a single metal plate such as a copper alloy material. The surface of the internal terminal 14 is plated with nickel and gold. The internal terminal 14 is integrated with the insulating member 12 by insert molding. This configuration allows accurate positioning between the insulating member 12 and the internal terminal 14. Details of the internal terminal 14 will be described later.

[0029] 7, the external terminal 16 is connected to the outer conductor 43 of the coaxial cable 40. The external terminal 16 is made of a conductive material, for example, a single metal plate made of a copper alloy material. The surface of the external terminal 16 is plated with nickel and gold.

[0030] The external terminal 16 includes a base portion 16a, a cylindrical portion (second external connection portion) 16d, and a coupling portion 16f. The base portion 16a and the cylindrical portion (second external connection portion) 16d are coupled to each other by a coupling portion 16f provided on the side opposite to the side where the coaxial cable 40 is disposed.

[0031] The cylindrical portion (second external connection portion) 16d extends in the Z-axis direction, and has an arc shape formed by partially cutting out the side of the coaxial cable 40 (opposite side of the connecting portion 16f) of the circumferential shape as viewed from the Z-axis direction. As viewed from the Z-axis direction, the cylindrical portion 16d has an opening on the side where the coaxial cable 40 is arranged, that is, on the opposite side of the connecting portion 16f. The fitting convex portion 16h of the cylindrical portion 16d is configured to fit into the fitting concave portion 26h of the counterpart external terminal 26 of the counterpart connector 20. The internal insulating portion 12a of the insulating member 12 is inserted into the cylindrical portion 16d through the opening of the cylindrical portion 16d and attached. The internal contact portion 14a of the internal terminal 14 is located inside the cylindrical portion 16d. At this time, the cylindrical portion 16d is positioned so as to be coaxial with the internal contact portion 14a.

[0032] The base portion 16a has a plate shape extending in the X-axis direction from the connecting portion 16f. The base portion 16a is positioned along the upper surfaces of the insulating member 12 and the coaxial cable 40 after assembly, and holds the insulating member 12 and the coaxial cable 40.

[0033] The base portion 16a has, in order from the cylindrical portion (second external connection portion) 16d side, a crimp engagement portion (first external connection portion) 16c, an outer conductor crimping portion 16s, and an outer coating crimping portion 16t.

[0034] Although details will be described later, the crimp engagement portion 16c is crimped while surrounding the insulator 42 of the coaxial cable 40, thereby electrically connecting the inner terminal 14 and the central conductor 41 of the coaxial cable 40. The outer conductor crimping portion 16s is crimped while surrounding the outer conductor 43 of the coaxial cable 40, thereby electrically connecting to the outer conductor 43. The outer covering crimping portion 16t is crimped while surrounding the electrically insulating outer covering 44 of the coaxial cable 40, thereby being fixed to the outer covering 44.

[0035] The insulating member 12 is disposed between the internal terminal 14 and the external terminal 16. The insulating member 12 is made of an electrically insulating resin (e.g., a liquid crystal polymer, etc.), and electrically insulates the internal terminal 14 and the external terminal 16 from each other.

[0036] The insulating member 12 may be made of a resin material having a relative dielectric constant of 2 or more and 2.3 or less, and a Rockwell hardness of 50 to 100. This suppresses deformation of the insulating member 12 when the L-type coaxial connector 10 is crimped to the coaxial cable 40, so that the first mounting portion 14f and the second mounting portion 14m can hold the central conductor 41 even when crimped with a small force. The resin material constituting the insulating member 12 is, for example, polymethylpentene. This allows the insulating member 12 to be easily formed by molding even if it has a complex shape.

[0037] 7, the insulating member 12 includes an internal insulating portion 12a, a central conductor holding portion 12b, and an insulating connecting portion 12d. Starting from the insulating connecting portion 12d, the internal insulating portion 12a and the central conductor holding portion 12b of the insulating member 12 are configured to be bifurcated in the Y-axis direction so as to be openable and closable.

[0038] The internal insulating part 12a in the closed state has a substantially circular shape when viewed from the Z-axis direction, and the internal insulating part 12a in the open state has a substantially semicircular shape when viewed from the Z-axis direction. The internal insulating part 12a is sized so as to be able to be fitted to the inside of the cylindrical part 16d in the Z-axis direction through the opening of the cylindrical part 16d. In the internal insulating part 12a, the internal contact part 14a of the internal terminal 14 bulges in the Z-axis direction. The internal contact part 14a is configured so as to be coaxial with the internal insulating part 12a.

[0039] The central conductor holding portion 12b extends from the inner insulating portion 12a toward the coaxial cable 40 in approximately the X-axis direction. The central conductor holding portion 12b has a substantially rectangular shape when viewed from the Z-axis direction. The central conductor holding portion 12b has an accommodating recess 12c. The accommodating recess 12c is configured to be able to accommodate the connection arm portions 14b, 14c and the mounting portions 14f, 14m of the inner terminal 14.

[0040] [First embodiment] 7, in the L-shaped coaxial connector 10 according to the first embodiment, the internal terminal 14 includes an internal contact portion 14a, a first connecting arm portion 14b, a second connecting arm portion 14c, a first mounting portion 14f, and a second mounting portion 14m. The internal contact portion 14a, the first connecting arm portion 14b, and the second connecting arm portion 14c are connected via a connecting portion 14d.

[0041] The internal contact portion 14a extends in the Z-axis direction and is configured as a female (socket) type having a generally C-shape that is partially cut out in the circumferential direction. The internal contact portion 14a electrically contacts the mating internal contact portion 24a of the mating internal terminal 24 of the mating connector 20.

[0042] The internal terminal 14 is bifurcated into a first connecting arm portion 14b and a second connecting arm portion 14c with the connecting portion 14d as a base point. The first connecting arm portion 14b and the second connecting arm portion 14c are disposed opposite to each other in the Y-axis direction. The first connecting arm portion 14b and the second connecting arm portion 14c are configured to be movable along the plane on which the base portion 16a of the external terminal 16 extends (i.e., the XY plane) with the connecting portion 14d as a fulcrum. This reduces the size of the internal terminal 14 in the Z-axis direction perpendicular to the plane on which the base portion 16a extends, i.e., the size of the internal terminal 14 in the height direction, and therefore the L-shaped coaxial connector 10 can be made low-profile.

[0043] The first connecting arm portion 14b and the second connecting arm portion 14c are plate-shaped portions extending approximately in the X-axis direction. The first connecting arm portion 14b is longer than the second connecting arm portion 14c in the X-axis direction. The first connecting arm portion 14b has a first mounting portion 14f on the way toward the coaxial cable 40. The first mounting portion 14f is bent in an L-shape toward the second connecting arm portion 14c and extends approximately in the Y-axis direction. This allows the movement of the first connecting arm portion 14b to be used to insert the first mounting portion 14f into the coaxial cable 40.

[0044] The tip side of the first mounting portion 14f is cut out, and the first mounting portion 14f has a U-shape. That is, the first mounting portion 14f has a first slit 14g formed therein. The first slit 14g is configured to receive the central conductor 41 of the coaxial cable 40.

[0045] The second connecting arm portion 14c has a second mounting portion 14m on the way toward the coaxial cable 40. The second mounting portion 14m is bent in an L-shape toward the first connecting arm portion 14b and extends substantially in the Y-axis direction. This allows the movement of the second connecting arm portion 14c to be used for inserting the second mounting portion 14m into the coaxial cable 40.

[0046] The tip side of the second mounting portion 14m is cut out, and the second mounting portion 14m has a U-shape. That is, the second mounting portion 14m is formed with a second slit 14n. The second slit 14n is configured to receive the central conductor 41 of the coaxial cable 40.

[0047] The first mounting portion 14f and the second mounting portion 14m face each other when viewed from the extending direction of the coaxial cable 40 (i.e., the axial direction of the coaxial cable 40, the X-axis direction). This allows the first mounting portion 14f and the second mounting portion 14m to hold the central conductor 41 of the coaxial cable 40. The angle formed by the first mounting portion 14f and the second mounting portion 14m is 180 degrees. This allows the first mounting portion 14f and the second mounting portion 14m to hold the central conductor 41 of the coaxial cable 40 from both sides.

[0048] The first mounting portion 14f is located closer to the coaxial cable 40 than the second mounting portion 14m. In other words, the first mounting portion 14f and the second mounting portion 14m are different in position in the extension direction of the coaxial cable 40, i.e., in the X-axis direction. The central conductor 41 of the coaxial cable 40 is freely bent and plastically deformed according to the arrangement of the first slit 14g and the second slit 14n whose positions in the extension direction are shifted. This allows the first mounting portion 14f and the second mounting portion 14m to be clamped at different positions relative to the central conductor 41 of the coaxial cable 40.

[0049] The crimping engagement portion 16c extends in the Z-axis direction from the side end of the base portion 16a. The crimping engagement portion 16c is composed of a pair of plate-shaped portions formed to face each other in the Y-axis direction.

[0050] The crimping engagement portion 16c, by bending and crimping, moves the first connection arm portion 14b and the second connection arm portion 14c of the internal terminal 14 so as to approach each other in the Y-axis direction, and forcibly presses the insulator 42 of the coaxial cable 40 against the first attachment portion 14f and the second attachment portion 14m of the internal terminal 14. The first attachment portion 14f and the second attachment portion 14m each cut the insulator 42 of the coaxial cable 40, and the central conductor 41 is pushed into the first slit 14g and the second slit, so that the central conductor 41 covered with the insulator 42 is exposed. The exposed central conductor 41 is inserted into the first slit 14g and the second slit, and comes into contact with the first attachment portion 14f and the second attachment portion 14m. As a result, the first attachment portion 14f is electrically connected to the central conductor 41 at the first connection position, and the second attachment portion 14m is electrically connected to the central conductor 41 at the second connection position.

[0051] As shown in FIG. 8, the first mounting portion 14f and the second mounting portion 14m are located at different positions in the extension direction of the coaxial cable 40, i.e., in the X-axis direction, and therefore the first mounting portion 14f and the second mounting portion 14m are electrically connected to the central conductor 41 at two different connection positions, i.e., a first connection position and a second connection position.

[0052] Therefore, by providing two different connection positions, namely, the first connection position between the center conductor 41 and the first mounting portion 14f and the second connection position between the center conductor 41 and the second mounting portion 14m, connection redundancy is achieved, thereby improving the connection stability between the center conductor 41 of the coaxial cable 40 and the mounting portions 14f, 14m of the internal terminal 14.

[0053] [Embodiment 2] The inner terminal 14 and the insulating member 12 of the L-shaped coaxial connector 10 according to the second embodiment will be described with reference to FIGS.

[0054] 10, in the internal terminal 14, the first connecting arm portion 14b and the second connecting arm portion 14c are configured to be movable in the Z-axis direction with the connecting portion 14d as a fulcrum. The structure of the insulating member 12 is changed to match the internal terminal 14. The following mainly describes the differences from the L-shaped coaxial connector 10 according to the above-mentioned first embodiment.

[0055] 10, the internal terminal 14 includes an internal contact portion 14a, a first connecting arm portion 14b, a second connecting arm portion 14c, a first mounting portion 14f, and a second mounting portion 14m. The internal contact portion 14a is connected to the second connecting arm portion 14c, and the first connecting arm portion 14b is connected to the second connecting arm portion 14c via a connecting portion 14d.

[0056] The internal contact portion 14a extends in the Z-axis direction and is configured as a female (socket) type having a generally C-shape that is partially cut out in the circumferential direction. The internal contact portion 14a electrically contacts the mating internal contact portion 24a of the mating internal terminal 24 of the mating connector 20.

[0057] The internal terminal 14 is bifurcated into a first connecting arm portion 14b and a second connecting arm portion 14c with the connecting portion 14d as a base point. The first connecting arm portion 14b and the second connecting arm portion 14c are disposed opposite each other in the Z-axis direction. The first connecting arm portion 14b and the second connecting arm portion 14c are configured to be movable in the Z-axis direction with the connecting portion 14d as a fulcrum.

[0058] The first connecting arm portion 14b and the second connecting arm portion 14c are plate-shaped portions extending approximately in the X-axis direction. The first connecting arm portion 14b is longer than the second connecting arm portion 14c in the X-axis direction. The first connecting arm portion 14b has a first mounting portion 14f on the way toward the coaxial cable 40. The first mounting portion 14f is bent in an L-shape toward the second connecting arm portion 14c and extends approximately in the Y-axis direction. This allows the movement of the first connecting arm portion 14b to be used to insert the first mounting portion 14f into the coaxial cable 40.

[0059] The tip side of the first mounting portion 14f is cut out, and the first mounting portion 14f has a U-shape. That is, the first mounting portion 14f is formed with a first slit 14g. The first slit 14g is configured to receive the central conductor 41 of the coaxial cable 40.

[0060] The second connecting arm portion 14c has a second mounting portion 14m on the way toward the coaxial cable 40. The second mounting portion 14m is bent in an L-shape toward the first connecting arm portion 14b and extends substantially in the Y-axis direction. This allows the movement of the second connecting arm portion 14c to be used for inserting the second mounting portion 14m into the coaxial cable 40.

[0061] The tip side of the second mounting portion 14m is cut out, and the second mounting portion 14m has a U-shape. That is, the second mounting portion 14m is formed with a second slit 14n. The second slit 14n is configured to receive the central conductor 41 of the coaxial cable 40.

[0062] The first mounting portion 14f and the second mounting portion 14m face each other when viewed from the extending direction of the coaxial cable 40 (i.e., the axial direction of the coaxial cable 40, the X-axis direction). This allows the first mounting portion 14f and the second mounting portion 14m to hold the central conductor 41 of the coaxial cable 40. The angle formed by the first mounting portion 14f and the second mounting portion 14m is 180 degrees. This allows the first mounting portion 14f and the second mounting portion 14m to hold the central conductor 41 of the coaxial cable 40 from both sides.

[0063] The first mounting portion 14f is located closer to the coaxial cable 40 than the second mounting portion 14m. In other words, the first mounting portion 14f and the second mounting portion 14m are different in position in the extension direction of the coaxial cable 40, i.e., in the X-axis direction. The central conductor 41 of the coaxial cable 40 is freely bent and plastically deformed according to the arrangement of the first slit 14g and the second slit 14n whose positions in the extension direction are shifted. This allows the first mounting portion 14f and the second mounting portion 14m to be clamped at different positions relative to the central conductor 41 of the coaxial cable 40.

[0064] The insulating member 12 has an internal insulating portion 12a and is configured with a central conductor holding portion 12b corresponding to the second connection arm portion 14c and a central conductor holding portion 12b corresponding to the first connection arm portion 14b, which are separate bodies. The former central conductor holding portion 12b has an accommodating recess 12c configured to accommodate the second connection arm portion 14c and the second mounting portion 14m. The latter central conductor holding portion 12b has an accommodating recess 12c configured to accommodate the first connection arm portion 14b and the first mounting portion 14f.

[0065] The crimping engagement portion 16c of the external terminal 16 is bent and crimped to move the first connecting arm portion 14b and the second connecting arm portion 14c of the internal terminal 14 closer to each other in the Z-axis direction, and forcibly presses the coaxial cable 40 against the first mounting portion 14f and the second mounting portion 14m of the internal terminal 14. The first mounting portion 14f and the second mounting portion 14m each cut the insulator 42 of the coaxial cable 40, and the central conductor 41 is pushed into the first slit 14g and the second slit, thereby exposing the central conductor 41 covered with the insulator 42. The exposed central conductor 41 is inserted into the first slit 14g and the second slit 14n and comes into contact with the first mounting portion 14f and the second mounting portion 14m. As a result, the first mounting portion 14f is electrically connected to the central conductor 41 at the first connection position, and the second mounting portion 14m is electrically connected to the central conductor 41 at the second connection position.

[0066] As shown in FIG. 11, the first mounting portion 14f and the second mounting portion 14m are located at different positions in the extension direction of the coaxial cable 40, i.e., in the X-axis direction, and therefore the first mounting portion 14f and the second mounting portion 14m are electrically connected to the central conductor 41 at two different connection positions, i.e., a first connection position and a second connection position.

[0067] Therefore, by providing two different connection positions, namely, the first connection position between the center conductor 41 and the first mounting portion 14f and the second connection position between the center conductor 41 and the second mounting portion 14m, connection redundancy is achieved, thereby improving the connection stability between the center conductor 41 of the coaxial cable 40 and the mounting portions 14f, 14m of the internal terminal 14.

[0068] Third Embodiment The inner terminal 14 and the insulating member 12 of the L-shaped coaxial connector 10 according to the third embodiment will be described with reference to FIGS.

[0069] 12 and 13, in the internal terminal 14, the first connection arm portion 14b has a first attachment portion 14f and a second attachment portion 14m that are located at different positions in the extending direction of the coaxial cable 40, and is configured so that the first direction A1 of the first slit 14g and the second direction A2 of the second slit 14n are different. The structure of the insulating member 12 is changed to match the internal terminal 14. The following mainly describes the differences from the L-shaped coaxial connector 10 according to the above-mentioned first embodiment.

[0070] 12, the internal terminal 14 includes an internal contact portion 14a, a first connecting arm portion 14b, a first mounting portion 14f, and a second mounting portion 14m. The internal contact portion 14a is connected to the first connecting arm portion 14b.

[0071] The first connecting arm portion 14b is a plate-like portion extending approximately in the X-axis direction. The first connecting arm portion 14b has a first mounting portion 14f and a second mounting portion 14m on the way toward the coaxial cable 40. The first mounting portion 14f is located closer to the coaxial cable 40 than the second mounting portion 14m. In other words, the first mounting portion 14f and the second mounting portion 14m are located at different positions in the extension direction of the coaxial cable 40, i.e., in the X-axis direction.

[0072] The first mounting portion 14f and the second mounting portion 14m are bent in an L-shape from the first connecting arm portion 14b and extend upward in the Z-axis direction. The tip side of the first mounting portion 14f is cut out, and the first mounting portion 14f has a U-shape. That is, a first slit 14g is formed in the first mounting portion 14f. The first slit 14g is configured to receive the central conductor 41 of the coaxial cable 40 and extends in the first direction A1.

[0073] The tip side of the second mounting portion 14m is cut out, and the second mounting portion 14m has a U-shape. That is, the second mounting portion 14m is formed with a second slit 14n. The second slit 14n is configured to receive the central conductor 41 of the coaxial cable 40 and extends in the second direction A2.

[0074] As shown in FIG. 13, the first direction A1 of the first slit 14g and the second direction A2 of the second slit 14n are configured to be different from each other with respect to the first connecting arm portion 14b. For example, the first slit 14g is inclined to the right with respect to the first connecting arm portion 14b, and the second slit 14n is inclined to the left with respect to the first connecting arm portion 14b. The deviation angle a between the first direction A1 and the second direction A2 is, for example, 1 degree or more and 15 degrees or less, and preferably 2 degrees or more and 10 degrees or less. In other words, the first mounting portion 14f and the second mounting portion 14m are disposed with an angle deviation with respect to the first connecting arm portion 14b. The central conductor 41 of the coaxial cable 40 is freely bent and plastically deformed according to the arrangement of the angle-shifted first slit 14g and second slit 14n. This allows the central conductor 41 of the coaxial cable 40 to be smoothly inserted into each of the first slit 14g and the second slit 14n, and the first mounting portion 14f and the second mounting portion 14m can be clamped at different positions relative to the central conductor 41 of the coaxial cable 40.

[0075] In the insulating member 12, one center conductor holding portion 12b having a semi-cylindrical internal insulating portion 12a and the other center conductor holding portion 12b having a semi-cylindrical internal insulating portion 12a are connected by an insulating connecting portion 12d. Each of the one and the other center conductor holding portions 12b, 12b has an accommodating recess 12c configured to be able to accommodate the first connecting arm portion 14b, the first mounting portion 14f, and the second mounting portion 14m. The accommodating recess 12c is open upward in the Z-axis direction, and is configured to expose the first mounting portion 14f and the second mounting portion 14m.

[0076] The crimping engagement portion 16c of the external terminal 16 is bent and crimped to forcibly press the coaxial cable 40 against the first mounting portion 14f and the second mounting portion 14m of the internal terminal 14. The first mounting portion 14f and the second mounting portion 14m each cut the insulator 42 of the coaxial cable 40, and the central conductor 41 is pushed into the first slit 14g and the second slit, so that the central conductor 41 covered with the insulator 42 is exposed. The exposed central conductor 41 is inserted into the first slit 14g and the second slit 14n and comes into contact with the first mounting portion 14f and the second mounting portion 14m. As a result, the first mounting portion 14f is electrically connected to the central conductor 41 at the first connection position, and the second mounting portion 14m is electrically connected to the central conductor 41 at the second connection position.

[0077] 13, the first slits 14g extend in a first direction A1, and the second slits 14n extend in a second direction A2, which are different from each other. As a result, the first mounting portion 14f and the second mounting portion 14m are electrically connected to the central conductor 41 at two different connection positions, i.e., the first connection position and the second connection position, and connection redundancy is achieved, thereby improving the connection stability between the central conductor 41 and the first mounting portion 14f and the second mounting portion 14m.

[0078] Therefore, by providing two different connection positions, namely, the first connection position between the center conductor 41 and the first mounting portion 14f and the second connection position between the center conductor 41 and the second mounting portion 14m, connection redundancy is achieved, thereby improving the connection stability between the center conductor 41 of the coaxial cable 40 and the mounting portions 14f, 14m of the internal terminal 14.

[0079] Although specific embodiments of the present disclosure have been described, the present disclosure is not limited to the above embodiments, and various modifications can be made within the scope of the present disclosure.

[0080] In the above embodiment, the insulating member 12 and the insulator 42 are exemplified by a resin material (e.g., polymethylpentene) having a relative dielectric constant of 2 or more and 2.3 or less and a Rockwell hardness of 50 to 100. However, the insulating member 12 and the insulator 42 may also be a porous or foamed material made of, for example, a vinyl chloride resin such as polyvinyl chloride, or an olefin resin such as polyethylene, polypropylene, or a propylene-ethylene copolymer.

[0081] In the above embodiment, the internal terminal 14 has a plurality of attachment parts, that is, the first attachment part 14f and the second attachment part 14m. However, in order to further increase the connection redundancy, the internal terminal 14 may have three or more attachment parts. For example, in the first and second embodiments, the first connecting arm part 14b may further have a third attachment part on the insulating coupling part 12d side from the second attachment part 14m of the second connecting arm part 14c. Furthermore, in the first and second embodiments, in addition to the third attachment part, the second connecting arm part 14c may further have a fourth attachment part on the insulating coupling part 12d side from the third attachment part of the first connecting arm part 14b. Therefore, in the first and second embodiments, it is only necessary that the positions of the first attachment part 14f, the second attachment part 14m, the third attachment part, and the fourth attachment part in the extending direction of the coaxial cable 40 are different from each other.

[0082] Also, in the third embodiment, the first connecting arm 14b may further include a third mounting portion having a third slit extending in the same direction as the first direction A1 of the first slit 14g on the insulating connecting portion 12d side from the second mounting portion 14m. Furthermore, in the third embodiment, in addition to the third mounting portion, the first connecting arm 14b may further include a fourth mounting portion having a fourth slit extending in the same direction as the second direction A2 of the second slit 14n on the insulating connecting portion 12d side from the third mounting portion. Therefore, in the third embodiment, it is only necessary that the first direction A1 of the first slit 14g, the second direction A2 of the second slit 14n, the third direction of the third slit, and the fourth direction of the fourth slit are different from each other.

[0083] In the third embodiment, the first direction A1 of the first slit 14g is oriented with an inclination toward the right side in Fig. 13, and the second direction A2 of the second slit 14n is oriented with an inclination toward the left side in Fig. 13. However, the first direction A1 and the second direction A2 do not have to be oriented in the same direction, and may be oriented with an inclination at different angles toward either the right side or the left side in Fig. 13. Also, one of the first direction A1 and the second direction A2 may be oriented in the Z-axis direction in Fig. 13, and the other may be oriented with an inclination toward either the right side or the left side in Fig. 13.

[0084] In the first and third embodiments, the two internal insulating parts 12a, 12a constituting the insulating member 12 are connected by the insulating connecting part 12d, but the two internal insulating parts 12a, 12a may be configured as separate parts. In the second embodiment, the insulating member 12 has two separate internal insulating parts 12a, 12a, but the two internal insulating parts 12a, 12a may be configured as connected by the insulating connecting part 12d.

[0085] The present disclosure and embodiments can be summarized as follows.

[0086] A coaxial connector 10 according to one embodiment of the present disclosure includes: an inner terminal 14 connected to a central conductor 41 of a coaxial cable 40; an external terminal 16 having a base portion 16a on which a crimping engagement portion 16c is formed to be connected to an outer conductor 43 of the coaxial cable 40; a coaxial connector including an insulating member disposed between the inner terminal and the outer terminal and configured to receive the inner terminal, The internal terminal 14 has a first connection arm portion 14b and a second connection arm portion 14c extending along the extending direction of the coaxial cable 40, The first connecting arm portion 14b and the second connecting arm portion 14c each have a first mounting portion 14f and a second mounting portion 14m on the side of the coaxial cable 40, A first slit 14g and a second slit 14n for receiving the central conductor 41 are formed in the first mounting portion 14f and the second mounting portion 14m, respectively. The first attachment portion 14f and the second attachment portion 14m are characterized in that they are located at different positions in the extending direction.

[0087] According to the above configuration, by providing two different connection positions, namely, a first connection position between the center conductor 41 and the first mounting portion 14f and a second connection position between the center conductor 41 and the second mounting portion 14m, connection redundancy is achieved, thereby improving the connection stability between the center conductor 41 of the coaxial cable 40 and the first mounting portion 14f and the second mounting portion 14m of the internal terminal 14.

[0088] In addition, in the coaxial connector 10 of one embodiment, The first mounting portion 14f is bent toward the second connecting arm portion 14c, and the second mounting portion 14m is bent toward the first connecting arm portion 14b.

[0089] According to the above embodiment, the movement of the first connecting arm portion 14b can be used to insert the first mounting portion 14f into the coaxial cable 40, and the movement of the second connecting arm portion 14c can be used to insert the second mounting portion 14m into the coaxial cable 40.

[0090] In addition, in the coaxial connector 10 of one embodiment, The first mounting portion 14f and the second mounting portion 14m face each other when viewed from the extending direction.

[0091] According to the above embodiment, the first attachment portion 14f and the second attachment portion 14m can clamp the central conductor 41 of the coaxial cable 40.

[0092] In addition, in the coaxial connector 10 of one embodiment, The first connecting arm portion 14b and the second connecting arm portion 14c are configured to be movable along a plane on which the base portion 16a extends.

[0093] According to the above embodiment, the size of the internal terminal 14 in the Z-axis direction perpendicular to the plane on which the base portion 16a extends, i.e., the height direction size of the internal terminal 14, is reduced, making it possible to reduce the height of the coaxial connector 10.

[0094] In addition, in the coaxial connector 10 of one embodiment, The insulating member 12 is made of a resin material having a relative dielectric constant of 2 or more and 2.3 or less and a Rockwell hardness of 50 to 100.

[0095] According to the above embodiment, deformation of the insulating member 12 is suppressed when the coaxial connector 10 is crimped to the coaxial cable 40, so that the first mounting portion 14f and the second mounting portion 14m can hold the central conductor 41 even when the crimping force is small.

[0096] In addition, in the coaxial connector 10 of one embodiment, The resin material is polymethylpentene.

[0097] According to the above embodiment, even an insulating member 12 having a complex shape can be easily formed by molding.

[0098] A coaxial connector 10 according to another embodiment of the present disclosure includes: an inner terminal 14 connected to a central conductor 41 of a coaxial cable 40; an external terminal 16 having a base portion 16a on which a crimping engagement portion 16c is formed to be connected to an outer conductor 43 of the coaxial cable 40; a coaxial connector including an insulating member disposed between the inner terminal and the outer terminal and configured to receive the inner terminal, The internal terminal 14 has a connection arm portion 14b extending along the extending direction of the coaxial cable 40, The connection arm portion 14b has a first attachment portion 14f and a second attachment portion 14m on the side of the coaxial cable 40, A first slit 14g and a second slit 14n for receiving the central conductor 41 are formed in the first mounting portion 14f and the second mounting portion 14m, respectively. The first mounting portion 14f and the second mounting portion 14m are positioned at different positions in the extending direction, and the first direction A1 in which the first slits 14g extend is different from the second direction A2 in which the second slits 14n extend.

[0099] According to the above embodiment, the first mounting portion 14f and the second mounting portion 14m are electrically connected to the central conductor 41 at two different connection positions, namely the first connection position and the second connection position, thereby achieving connection redundancy, thereby improving the connection stability between the central conductor 41 and the first mounting portion 14f and the second mounting portion 14m.

[0100] In addition, in the coaxial connector 10 of one embodiment, A deviation angle a between the first direction A1 and the second direction A2 is equal to or greater than 1 degree and equal to or less than 15 degrees.

[0101] According to the above embodiment, the central conductor 41 of the coaxial cable 40 can be smoothly inserted into each of the first slit 14g and the second slit 14n, and the first mounting portion 14f and the second mounting portion 14m can be clamped at different positions relative to the central conductor 41 of the coaxial cable 40.

[0102] In addition, in the coaxial connector 10 of one embodiment, The insulating member 12 is made of a resin material having a relative dielectric constant of 2 or more and 2.3 or less and a Rockwell hardness of 50 to 100.

[0103] According to the above embodiment, deformation of the insulating member 12 is suppressed when the coaxial connector 10 is crimped to the coaxial cable 40, so that the first mounting portion 14f and the second mounting portion 14m can hold the central conductor 41 even when the crimping force is small.

[0104] In addition, in the coaxial connector 10 of one embodiment, The resin material is polymethylpentene.

[0105] According to the above embodiment, even an insulating member 12 having a complex shape can be easily formed by molding.

[0106] A coaxial connector set 1 according to one embodiment of the present disclosure includes: The connector includes the above-mentioned coaxial connector 10 and a mating connector 20 that fits into the coaxial connector 10.

[0107] According to the above configuration, by providing two different connection positions, namely, a first connection position between the center conductor 41 and the first mounting portion 14f and a second connection position between the center conductor 41 and the second mounting portion 14m, connection redundancy is achieved, thereby improving the connection stability between the center conductor 41 of the coaxial cable 40 and the first mounting portion 14f and the second mounting portion 14m of the internal terminal 14.

[0108] (Outline of the embodiment) (1) A coaxial connector of the present disclosure includes an inner terminal connected to a central conductor of a coaxial cable, an outer terminal having a base portion formed with a crimping engagement portion connected to an outer conductor of the coaxial cable, and an insulating member disposed between the inner terminal and the outer terminal and configured to accommodate the inner terminal, wherein the inner terminal has a first connecting arm portion and a second connecting arm portion extending along the extension direction of the coaxial cable, each of the first connecting arm portion and the second connecting arm portion having a first mounting portion and a second mounting portion on the side of the coaxial cable, each of the first mounting portion and the second mounting portion having a first slit and a second slit formed therein for receiving the central conductor, and the first mounting portion and the second mounting portion are located at different positions in the extension direction.

[0109] (2) In the coaxial connector of (1), the first attachment portion is bent toward the second connecting arm portion, and the second attachment portion is bent toward the first connecting arm portion.

[0110] (3) In the coaxial connector of (2), the first attachment portion and the second attachment portion face each other when viewed from the extending direction.

[0111] (4) In the coaxial connector according to any one of (1) to (3), the first connecting arm portion and the second connecting arm portion are configured to be movable along a plane in which the base portion extends.

[0112] (5) In the coaxial connector according to any one of (1) to (4), the insulating member is made of a resin material having a relative dielectric constant of 2 or more and 2.3 or less and a Rockwell hardness of 50 to 100.

[0113] (6) In the coaxial connector of (5), the resin material is polymethylpentene.

[0114] (7) A coaxial connector of the present disclosure is a coaxial connector comprising: an inner terminal connected to a central conductor of a coaxial cable; an outer terminal having a base portion formed with a crimping engagement portion connected to the outer conductor of the coaxial cable; and an insulating member disposed between the inner terminal and the outer terminal and configured to accommodate the inner terminal, wherein the inner terminal has a connection arm portion extending along the extension direction of the coaxial cable, the connection arm portion has a first mounting portion and a second mounting portion on the side of the coaxial cable, and a first slit and a second slit are formed in each of the first mounting portion and the second mounting portion to receive the central conductor, the first mounting portion and the second mounting portion being positioned differently in the extension direction, and the first direction in which the first slit extends is different from the second direction in which the second slit extends.

[0115] In the coaxial connector of (8)(7), the deviation angle between the first direction and the second direction is equal to or greater than 1 degree and equal to or less than 15 degrees.

[0116] In the coaxial connector of (9) or (7) or (8), the insulating member is made of a resin material having a relative dielectric constant of 2 or more and 2.3 or less and a Rockwell hardness of 50 to 100.

[0117] In the coaxial connector of (10)(9), the resin material is polymethylpentene.

[0118] (11) A coaxial connector set according to the present disclosure includes the coaxial connector according to any one of (1) to (10) above, and a mating connector that mates with the coaxial connector. [Explanation of symbols]

[0119] 1...Coaxial connector set 10...L-type coaxial connector (coaxial connector) 12...Insulating member (bushing) 12a…Internal insulation 12b...Center conductor holding part 12c…Housing recess 12d…Insulated joint 14...Internal terminal (socket) 14a...Internal contact part 14b...First connecting arm portion (connecting arm portion) 14c...Second connecting arm part (connecting arm part) 14d...Connection part 14f…First mounting part (mounting part) 14g…First slit (slit) 14m…Second mounting section (mounting section) 14n…Second slit (slit) 16...External terminal (housing) 16a…Base section 16c... Crimping engagement portion (first external connection portion) 16d...Cylindrical portion (second external connection portion) 16f...Connection part 16h…Mating protrusion 16s…Outer conductor crimping part 16t…External coating crimping part 20...Mating connector (receptacle) 22...Mating insulating member 24…Internal terminal of counterpart 24a…Internal contact part of the other party 26…Other party external terminal 26a…Other party external mounting part 26b…Partner's second external connection 26h…Mating recess 40…Coaxial cable 41...Center conductor 42...Insulator 43…Outer conductor 44…Outer sheath A1…first direction A2…Second direction a…deviation angle

Claims

1. an inner terminal connected to a central conductor of the coaxial cable; an external terminal having a base portion on which a crimping engagement portion is formed to be connected to an outer conductor of the coaxial cable; an insulating member disposed between the internal terminal and the external terminal and configured to accommodate the internal terminal, the inner terminal has a first connection arm portion and a second connection arm portion extending along an extending direction of the coaxial cable, each of the first connecting arm portion and the second connecting arm portion has a first mounting portion and a second mounting portion on a side of the coaxial cable; a first slit and a second slit for receiving the central conductor are formed in the first mounting portion and the second mounting portion, respectively; A coaxial connector, wherein the first mounting portion and the second mounting portion are located at different positions in the extending direction.

2. 2. The coaxial connector according to claim 1, wherein the first mounting portion is bent toward the second connecting arm portion, and the second mounting portion is bent toward the first connecting arm portion.

3. The coaxial connector according to claim 2 , wherein the first attachment portion and the second attachment portion face each other when viewed from the extending direction.

4. The coaxial connector according to claim 1 , wherein the first connecting arm portion and the second connecting arm portion are configured to be movable along a plane along which the base portion extends.

5. 2. The coaxial connector according to claim 1, wherein the insulating member is made of a resin material having a relative dielectric constant of 2 or more and 2.3 or less and a Rockwell hardness of 50 to 100.

6. 6. The coaxial connector according to claim 5, wherein the resin material is polymethylpentene.

7. an inner terminal connected to a central conductor of the coaxial cable; an external terminal having a base portion on which a crimping engagement portion is formed to be connected to an outer conductor of the coaxial cable; an insulating member disposed between the internal terminal and the external terminal and configured to accommodate the internal terminal, the inner terminal has a connection arm portion extending along an extending direction of the coaxial cable, the connecting arm portion has a first attachment portion and a second attachment portion on a side of the coaxial cable, a first slit and a second slit for receiving the central conductor are formed in the first mounting portion and the second mounting portion, respectively; A coaxial connector, wherein the first mounting portion and the second mounting portion are positioned at different positions in the extension direction, and the first direction in which the first slit extends and the second direction in which the second slit extends are different.

8. 8. The coaxial connector of claim 7, wherein an offset angle between the first direction and the second direction is greater than or equal to 1 degree and less than or equal to 15 degrees.

9. 8. The coaxial connector according to claim 7, wherein the insulating member is made of a resin material having a relative dielectric constant of 2 or more and 2.3 or less and a Rockwell hardness of 50 to 100.

10. 10. The coaxial connector of claim 9, wherein the resin material is polymethylpentene.

11. A coaxial connector set comprising: the coaxial connector according to claim 1; and a mating connector that mates with the coaxial connector.

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