Coaxial cable connector and connector with coaxial cable

Abstract

To provide a coaxial cable connector capable of reducing the cost and facilitating a connection operation of the coaxial cable, and provide the connector with the coaxial cable in which the coaxial cable is connected to the connector.SOLUTION: A coaxial cable connector 3 to be attached to an end part of a coaxial cable 2 having a hollow pipe-like external conductive wire 21 and an internal conductive wire 22 housed in an internal part of the external conductive wire 21, comprises: a contact head 4 having a first screw part 461 and a first holding part 44; and a plunger 8 having integrally a second screw part 831 and a second narrowing part 84. The second screw part 831 is screwed to the first screw part 461, and the plunger 8 is thereby moved in an axial direction with respect to the connector head 4. By the movement in the axial direction, an end part of the external conductive wire 21 is held between the first narrowing part 44 and the second narrowing part 84.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a connector for a coaxial cable and a connector with a coaxial cable. [Background technology]

[0002] Conventionally, a connector for a coaxial cable used as an antenna feeder for a mobile phone base station is known, as described in Patent Document 1. The connector described in Patent Document 1 has a first connection tube fitted onto the end of the coaxial cable, a second connection tube connected to the first connection tube in the cable longitudinal direction, and a split clamp fitted onto the end of the coaxial cable. A male thread is formed on the outer periphery of the first connection tube, and a female thread is formed on the inner periphery of the second connection tube to screw into the male thread of the first connection tube. The coaxial cable has an outer conductor and an inner conductor arranged coaxially via an insulator. The end of the outer conductor is a flange-shaped portion formed by expanding outward. The split clamp is disposed between a step portion formed on the first connection tube and a receiving seat formed on the second connection tube. When the female thread portion of the second connection tube is screwed into the male thread portion of the first connection tube, the split clamp is pressed onto the step portion, and the flange-shaped portion is clamped between the receiving seat. The split clamp is made up of a pair of ring-shaped members split into an arc shape, and has an inner diameter and inner shape that match the outer shape of the coaxial cable. The pair of ring-shaped members are connected at one of their butted ends with a cotton adhesive tape. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2002-42993 A Summary of the Invention [Problem to be solved by the invention]

[0004] With the recent development of mobile communication systems, the number of antennas for mobile communication has rapidly increased, and the number of connectors for coaxial cables installed has also increased. For this reason, there is a strong demand for coaxial cable connectors that are low in cost and easy to connect to coaxial cables.

[0005] The present invention has been made in consideration of the above circumstances, and its object is to provide a coaxial cable connector that can reduce costs and facilitate connection to a coaxial cable, and a connector with a coaxial cable in which a coaxial cable is connected to the connector. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems, the present invention provides a coaxial cable connector to be attached to an end of a coaxial cable having a hollow tubular outer conductor wire and an inner conductor wire housed inside the outer conductor wire, the coaxial cable connector comprising a first member having a first threaded portion and a first clamping portion, and a second member integrally having a second threaded portion and a second clamping portion, wherein the second threaded portion screws into the first threaded portion, causing the second member to move axially relative to the first member, and the axial movement causes the end of the outer conductor wire to be clamped between the first clamping portion and the second clamping portion.

[0007] Furthermore, for the purpose of solving the above-mentioned problems, the present invention provides a connector with a coaxial cable, comprising: a coaxial cable having a hollow tubular outer conductor wire and an inner conductor wire housed inside the outer conductor wire; and a connector attached to an end of the coaxial cable, wherein the connector comprises a first member having a first threaded portion and a first clamping portion, and a second member integrally having a second threaded portion and a second clamping portion, wherein the second threaded portion screws into the first threaded portion, causing the second member to move axially relative to the first member, and the axial movement causes the end of the outer conductor wire to be clamped between the first clamping portion and the second clamping portion. Effect of the Invention

[0008] The coaxial cable connector and the connector with a coaxial cable according to the present invention make it possible to reduce costs and facilitate the operation of connecting to the coaxial cable. [Brief description of the drawings]

[0009] [Figure 1] 1 is a half cross-sectional view showing a coaxial cable with a connector according to an embodiment of the present invention. [Diagram 2] 1A is an external view of a coaxial cable, and FIG. 1B is a cross-sectional view of the coaxial cable taken along the longitudinal direction of the cable. [Diagram 3] 1A is a half sectional view showing the connector assembly, and FIG. 1B is a configuration diagram of the connector assembly as viewed from the connector base end side along the axial direction. [Figure 4] 1A is a configuration diagram of a plunger and a coaxial cable as viewed from the tip side of the connector along the axial direction, and FIG. [Diagram 5] 5(a) to 5(c) are explanatory views showing the process of assembling a coaxial cable and a connector to a connector assembly. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] [Embodiment Mode] An embodiment of the present invention will be described with reference to Figures 1 to 5. Note that the embodiment described below is shown as a preferred specific example for carrying out the present invention, and while there are some parts that specifically exemplify various technical matters that are technically preferable, the technical scope of the present invention is not limited to this specific embodiment.

[0011] Fig. 1 is a half cross-sectional view showing a coaxial cable with connector 1 according to the present embodiment. The coaxial cable with connector 1 includes a coaxial cable 2 and a coaxial cable connector 3 (hereinafter also simply referred to as "connector 3") attached to an end of the coaxial cable 2. In Fig. 1, a central axis C of the connector 3 is indicated by a dashed dotted line, a cross section of the coaxial cable with connector 1 is shown above the central axis C, and an external appearance of the coaxial cable with connector 1 is shown below the central axis C.

[0012] As an example, the end of the coaxial cable 2 opposite to the connector 3 is connected to, for example, an antenna for mobile communications or an antenna for public broadcasting. Also, as an example, the connector 3 is connected to a transmitter or receiver of a mobile communications base station, a connector of a transmitter of radio waves for public broadcasting, or a relay connector. In Fig. 1, the mating connector 9 connected to the connector 3 is shown by a two-dot chain line.

[0013] The coaxial cable 2 is connected to a mating connector 9 via a connector 3. Hereinafter, a direction parallel to a central axis C of the connector 3 will be referred to as an axial direction. One side in the axial direction, which is the mating connector 9 side (left side in Fig. 1), will be referred to as a connector tip side, and the other axial side, which is the opposite side, which is the side where the coaxial cable 2 extends from the connector 3 (right side in Fig. 1), will be referred to as a connector base side.

[0014] 2 shows a coaxial cable 2 to be attached to a connector 3, where (a) is an external view and (b) is a partial cross-sectional view along the cable longitudinal direction. The coaxial cable 2 has a hollow tubular outer conductor wire 21, an inner conductor wire 22 housed inside the outer conductor wire 21, a dielectric 23 disposed between the outer conductor wire 21 and the inner conductor wire 22, and a sheath 24 provided on the outer periphery of the outer conductor wire 21. The outer conductor wire 21 and the inner conductor wire 22 are made of a conductive metal such as copper. The dielectric 23 is made of an insulating resin such as fluororesin or polyethylene. The sheath 24 is made of an insulating resin such as fluororesin or urethane. In this embodiment, the inner conductor wire 22 is hollow cylindrical, but the inner conductor wire 22 may be solid axial.

[0015] The outer conductor wire 21 has a bellows-like corrugated shape in which a plurality of convex portions 211 protruding toward the outer periphery and a plurality of concave portions 212 recessed toward the inner periphery are alternately formed in the axial direction. The dielectric 23 has an uneven outer surface 23a that conforms to the shape of the inner surface 21a of the outer conductor wire 21. At the end of the coaxial cable 2 on the connector 3 side, the outer conductor wire 21, the inner conductor wire 22, and the dielectric 23 protrude from the sheath 24, and the inner conductor wire 22 further protrudes from the dielectric 23. At the end on the connector tip side, the outer conductor wire 21 is cut at the apex 211a, which is the maximum outer diameter part of the convex portion 211.

[0016] The connector 3 has a cylindrical connector head 4 to which the outer conductor wire 21 of the coaxial cable 2 is connected, a connector internal conductor 5 arranged inside the connector head 4 and to which the inner conductor wire 22 of the coaxial cable 2 is connected, a nut member 6 arranged on the outer periphery of the end of the connector head 4 on the connector tip side, a ring-shaped insulator 71 arranged between the connector head 4 and the connector internal conductor 5, a slip ring 72 that restricts axial movement of the nut member 6 relative to the connector head 4, and a plunger 8 inserted into the connector head 4 together with the coaxial cable 2 from the end of the connector head 4 on the connector base end side.

[0017] The connector head 4, the connector internal conductor 5, the nut member 6, the slip ring 72, and the plunger 8 are made of a conductive metal. The insulator 71 is made of an electrically insulating resin material or rubber material. The connector head 4 is an embodiment of the first member of the present invention, and the plunger 8 is an embodiment of the second member of the present invention.

[0018] The connector head 4, the connector internal conductor 5, the nut member 6, the insulator 71, and the slip ring 72 constitute a connector assembly 30. A mating connector 9 is connected to the connector assembly 30 from the connector tip side. The mating connector 9 has a mating outer conductor 91 electrically connected to the connector head 4 via the nut member 6, and a mating inner conductor 92 electrically connected to the connector internal conductor 5.

[0019] Fig. 3(a) is a half cross-sectional view showing the connector assembly 30. Fig. 3(b) is a configuration diagram of the connector assembly 30 as viewed from the connector base end side along the axial direction. The connector head 4 integrally includes, in order from the connector tip side, a fitting connection portion 41 that is fitted into the mating outer conductor 91 to be connected to the mating outer conductor 91, a nut support portion 42 that rotatably supports the nut member 6, a thick-walled cylindrical portion 43 that is formed to have a thick wall, a first clamping portion 44 that is formed to protrude from the inner diameter side end of the thick-walled cylindrical portion 43 toward the connector base end side, a cylindrical intermediate cylindrical portion 45 that extends from the outer diameter side end of the thick-walled cylindrical portion 43 toward the connector base end side, and a tip cylindrical portion 46 in which a first screw portion 461 is formed.

[0020] The nut support portion 42 has an annular groove 421 formed on its outer periphery in a circumferential direction and in an annular shape. The nut member 6 has an internal thread portion 61 and an annular groove 62 formed on its inner periphery. The annular groove 62 is formed in an annular shape in a circumferential direction at a portion facing the annular groove 421 of the nut support portion 42. The slip ring 72 is formed in a C-shape, with a portion of the inner periphery accommodated in the annular groove 421 of the nut support portion 42 and a portion of the outer periphery accommodated in the annular groove 62 of the nut member 6. The internal thread portion 61 is screwed into the mating outer conductor 91 by the rotation of the nut member 6 relative to the connector head 4. When the nut member 6 rotates relative to the connector head 4, the slip ring 72 slides on at least one of the inner surfaces of the annular groove 421 of the nut support portion 42 and the annular groove 62 of the nut member 6.

[0021] The first clamping portion 44 has a first contact surface 44a that contacts the inner surface 21a of the external conductor wire 21, and an inner circumferential surface 44b. The first contact surface 44a is a tapered surface inclined at an acute angle with respect to the axial direction. The inner circumferential surface 44b is a cylindrical surface parallel to the central axis C. In a cross section of the first clamping portion 44 taken along the central axis C, the angle θ1 formed between the first contact surface 44a and the inner circumferential surface 44b is an acute angle. The angle θ1 is, for example, not less than 30° and not more than 60°, and in the example shown in FIG. 3(a), the angle θ1 is 45°.

[0022] The intermediate cylindrical portion 45 extends axially longer than the first clamping portion 44 between the thick-walled cylindrical portion 43 and the tip cylindrical portion 46. The outer diameter of the tip cylindrical portion 46 is formed larger than the outer diameter of the intermediate cylindrical portion 45. In the present embodiment, as an example, the first threaded portion 461 is a female thread formed on the inner circumference of the tip cylindrical portion 46. An end surface 46a of the tip cylindrical portion 46 on the connector tip side is an abutment surface that abuts against a wall portion 82 of the plunger 8 described later.

[0023] The connector inner conductor 5 integrally includes a tip-side connection portion 51 that is connected to the mating inner conductor 92 by fitting into the mating inner conductor 92, a base-side connection portion 52 that is connected to the inner conductor wire 22 of the coaxial cable 2, and an axis portion 53 between the tip-side connection portion 51 and the base-side connection portion 52. In this embodiment, the mating inner conductor 92 is cylindrical, and the tip-side connection portion 51 is fitted into the center of the mating inner conductor 92. In this embodiment, the base-side connection portion 52 is cylindrical with multiple slits 520 extending in the axial direction, and the inner conductor wire 22 is fitted into the center of the base-side connection portion 52. When the inner conductor wire 22 is fitted into the base-side connection portion 52, the base-side connection portion 52 elastically deforms so that the width of the multiple slits 520 increases.

[0024] The insulator 71 is disposed between the nut support portion 42 of the connector head 4 and the shaft portion 53 of the connector inner conductor 5 , and determines the relative position of the connector inner conductor 5 with respect to the connector head 4 .

[0025] Fig. 4(a) is a configuration diagram of the plunger 8 as viewed from the connector tip side along the axial direction. Fig. 4(b) is a half cross-sectional view showing the plunger 8 and the coaxial cable 2. The coaxial cable 2 is combined with the connector assembly 30 with its end held by the plunger 8. An O-ring 73 is disposed between the plunger 8 and the outer conductor wire 21 of the coaxial cable 2. The O-ring 73 is disposed on the outer periphery of the recess 212 of the outer conductor wire 21, and elastically contacts the outer conductor wire 21 and the plunger 8, functioning as a sealant that prevents foreign matter from entering through a gap between the outer conductor wire 21 and the plunger 8.

[0026] The plunger 8 has, in order from the connector base end side, a sheath holding portion 81 that holds the sheath 24 of the coaxial cable 2, a ring-shaped wall portion 82 against which the end face 46a of the tip cylindrical portion 46 of the connector head 4 is abutted, a screwing portion 83 having a second screw portion 831 that screws into the first screw portion 461 of the connector head 4, and a second clamping portion 84 that clamps the end of the outer conductor wire 21 of the coaxial cable 2 between itself and the first clamping portion 44 of the connector head 4.

[0027] The sheath holding portion 81 is cylindrical and has an inner diameter corresponding to the outer diameter of the sheath 24. The outer conductor wire 21 is exposed from the sheath 24 on the connector tip side of the sheath holding portion 81. The wall portion 82 is annular and has an outer diameter larger than the sheath holding portion 81 and the screwing portion 83. In this embodiment, the second screw portion 831 is a male screw, and the second screw portion 831 is screwed into the first screw portion 461, so that the plunger 8 moves in the axial direction toward the connector tip side relative to the connector head 4. This axial movement of the plunger 8 causes the end of the outer conductor wire 21 to be clamped between the first clamping portion 44 and the second clamping portion 84 of the connector head 4. The second clamping portion 84 is cylindrical and has a plurality of slits 840 extending in the axial direction.

[0028] In this embodiment, as shown in Fig. 4(a), six slits 840 are formed at equal intervals in the circumferential direction in the second clamping portion 84. The second clamping portion 84 is divided into a plurality of divided pieces 84A to 84F by these slits 840. Furthermore, the plurality of divided pieces 84A to 84F are elastically deformed to increase the width of the slits 840, so that the second clamping portion 84 can be expanded in diameter to increase its inner diameter.

[0029] A protrusion 841 is provided at the tip of the second clamping portion 84, protruding radially inward toward the central axis C. The protrusion 841 engages with one of the recesses 212 of the external conductor wire 21 that is closest to the first clamping portion 44. The second clamping portion 84 also has a second abutment surface 84a that abuts against the outer surface 21b at the end of the external conductor wire 21 to sandwich the end of the external conductor wire 21 between the second clamping portion 84 and the first abutment surface 44a of the first clamping portion 44. The second abutment surface 84a is formed at the tip of the second clamping portion 84. As shown in FIG. 1, an angle θ2 of the second abutment surface 84a with respect to the axial direction when the end of the external conductor wire 21 is clamped is equal to an angle θ1, which is an inclination angle of the first abutment surface 44a with respect to the axial direction. In this embodiment, the second abutment surface 84a is formed on the protrusion 841. That is, in this embodiment, the surface of the projection 841 on the connector tip side serves as a second contact surface 84a that is inclined with respect to the axial direction.

[0030] The surface of the protrusion 841 on the connector base end side is an inclined surface 841a inclined in the axial direction opposite to the second abutment surface 84a. When the protrusion 841 is engaged with the recess 212 of the external conductor wire 21, the inclined surface 841a is brought into contact with the top 211a of the protrusion 211, causing the multiple divided pieces 84A-84F to elastically deform so as to spread apart from each other, and the second clamping portion 84 is expanded in diameter.

[0031] 5(a) to (c), a method for manufacturing the connectorized coaxial cable 1 will be described. In FIG. 5(a) to (c), steps for assembling the coaxial cable 2 and the connector 3 to the connector assembly 30 are shown.

[0032] 5(a) shows the connector assembly 30, the coaxial cable 2, and the plunger 8 aligned in the axial direction. The plunger 8 is disposed on the outer periphery of the coaxial cable 2, and the protrusion 841 of the second clamping portion 84 engages with the recess 212 closest to the connector tip side. The coaxial cable 2 is cut perpendicular to the axial direction at the top 211a of the protrusion 211, and the tip surface 2a of the coaxial cable 2 forms a flat surface perpendicular to the axial direction.

[0033] FIG. 5(b) shows a state where a part of the second screw portion 831 of the plunger 8 is screwed into the first screw portion 461 of the connector head 4, and the tip surface 2a of the coaxial cable 2 is in contact with the tip portion 441 of the first clamping portion 44 of the connector head 4. The coaxial cable 2 is pushed axially toward the rear side of the connector head 4 with the protrusion 841 of the second clamping portion 84 engaged with the recess 212. The tip portion 441 of the first clamping portion 44 is an acute corner formed by the first abutment surface 44a and the inner circumferential surface 44b. The inner diameter of the first clamping portion 44 is equal to the inner diameter of the outer conductor wire 21 at the tip surface 2a of the coaxial cable 2. In addition, the inner conductor wire 22 of the coaxial cable 2 is fitted into the base end side connection portion 52 of the connector inner conductor 5 by the coaxial cable 2 being pushed axially toward the rear side of the connector head 4.

[0034] 5(c) shows a state in which the second screw portion 831 is further screwed into the first screw portion 461 than in the state shown in FIG. 5(b), and the tip portion 441 of the first clamping portion 44 is wedged between the outer conductor wire 21 and the dielectric 23 of the coaxial cable 2. As the coaxial cable 2 is pushed into the inner side of the connector head 4, the end portion of the outer conductor wire 21 is deformed into a tapered shape while expanding in diameter along the first abutment surface 44a of the first clamping portion 44. The dielectric 23 is separated from the outer conductor wire 21 and accommodated inside the first clamping portion 44. Note that a part of the dielectric 23 near the outer conductor wire 21 at the tip surface 2a of the coaxial cable 2 may be removed in advance.

[0035] Thereafter, when the second screw portion 831 is screwed into the first screw portion 461 until the wall portion 82 of the plunger 8 abuts against the end surface 46a on the connector tip side of the tip cylindrical portion 46 of the connector head 4, the end portion of the external conductor wire 21 is sandwiched between the first abutment surface 44a and the second abutment surface 84a, as shown in Fig. 1. The second abutment surface 84a abuts against the outer surface 21b of the external conductor wire 21 in a state in which the second clamping portion 84 is expanded in diameter due to elastic deformation, as shown in Fig. 1. In this state, the first abutment surface 44a and the second abutment surface 84a are parallel, and the first abutment surface 44a is in surface contact with the inner surface 21a of the external conductor wire 21, and the second abutment surface 84a is in surface contact with the outer surface 21b of the external conductor wire 21.

[0036] (Functions and Effects of the Embodiments) According to the embodiment described above, the plunger 8 has the second screw portion 831 and the second clamping portion 84 integrally formed therewith, and the second screw portion 831 is screwed into the first screw portion 461 to clamp the end of the outer conductor wire 21 between the first clamping portion 44 and the second clamping portion 84. This reduces the number of parts and facilitates the connection work between the coaxial cable 2 and the connector 3, thereby enabling the connector-equipped coaxial cable 1 and the connector 3 to be made smaller and less expensive.

[0037] Furthermore, according to the above embodiment, the first contact surface 44a is a tapered surface inclined with respect to the axial direction, and the end of the outer conductor wire 21 is expanded in diameter along the first contact surface 44a in the process of pushing the coaxial cable 2 in by the plunger 8, so there is no need to previously expand the end of the outer conductor of the coaxial cable outward to form a flange-shaped portion, as in, for example, the above-mentioned Patent Document 1. This makes it even easier to connect the coaxial cable 2 to the connector 3.

[0038] Furthermore, according to the above embodiment, when the second screw portion 831 screws into the first screw portion 461 and the plunger 8 is tightened into the connector head 4, the second clamping portion 84 clamps the external conductor wire 21 between itself and the first clamping portion 44 in a state in which the second clamping portion 84 expands in diameter due to elastic deformation. Therefore, even if the screwed state between the first screw portion 461 and the second screw portion 831 loosens slightly, the end of the external conductor wire 21 is maintained in a clamped state between the first clamping portion 44 and the second clamping portion 84.

[0039] Furthermore, according to the above embodiment, when the protrusion 841 of the second clamping portion 84 is engaged with the recess 212 of the external conductor wire 21, the second clamping portion 84 is expanded in diameter by elastic deformation, whereby the protrusion 841 can easily climb over the top 211a of the convex portion 211, thereby making it possible to easily form an engaged state between the coaxial cable 2 and the plunger 8.

[0040] (Summary of the embodiment) Next, the technical ideas grasped from the above-described embodiment will be described by using the reference numerals and the like in the embodiment. However, the reference numerals and the like in the following description do not limit the components in the claims to the members and the like specifically shown in the embodiment.

[0041] [1] A coaxial cable connector (3) to be attached to an end of a coaxial cable (2) having a hollow tubular outer conductor wire (21) and an inner conductor wire (22) housed inside the outer conductor wire (21), the coaxial cable connector (3) comprising: a first member (connector head 4) having a first threaded portion (461) and a first clamping portion (44); and a second member (plunger 8) integrally having a second threaded portion (831) and a second clamping portion (84), wherein the second threaded portion (831) is screwed into the first threaded portion (461) to move the second member (8) in the axial direction relative to the first member (4), and the axial movement causes the end of the outer conductor wire (21) to be clamped between the first clamping portion (44) and the second clamping portion (84).

[0042] [2] The coaxial cable connector (3) described in [1] above, wherein the first clamping portion (44) has a first abutment surface (44a) that abuts against an inner surface (21a) of the external conductor wire (21), the first abutment surface (44a) being a tapered surface inclined at an acute angle with respect to the axial direction, and the second clamping portion (84) has a second abutment surface (84a) that abuts against an outer surface (21b) of the external conductor wire (21) to clamp an end of the external conductor wire (21) between itself and the first abutment surface (44a).

[0043] [3] The coaxial cable connector (3) described in [2] above, wherein the second clamping portion (84) is cylindrical in shape and has a plurality of slits (840) extending in the axial direction, and the second abutment surface (84a) is formed at a tip end of the second clamping portion (84).

[0044] [4] The coaxial cable connector (3) described in [3] above, wherein the outer conductor wire (21) has a wave-shaped configuration in which a plurality of recesses (212) and a plurality of protrusions (211) are alternately formed along the axial direction, and the second clamping portion (84) has a protrusion (841) that engages with the recess (212) closest to the first clamping portion (44).

[0045] [5] A connector with a coaxial cable (1), comprising: a coaxial cable (2) having a hollow tubular outer conductor wire (21) and an inner conductor wire (22) housed inside the outer conductor wire (21); and a connector (3) attached to an end of the coaxial cable (2), wherein the connector (3) comprises a first member (4) having a first threaded portion (461) and a first clamping portion (44), and a second member (8) integrally having a second threaded portion (831) and a second clamping portion (84), wherein the second threaded portion (831) is screwed into the first threaded portion (461), thereby causing the second member (8) to move in the axial direction relative to the first member (4), and the axial movement causes the end of the outer conductor wire (21) to be clamped between the first clamping portion (44) and the second clamping portion (84).

[0046] [6] The connector with coaxial cable (1) described in [5] above, wherein the first clamping portion (44) has a first abutment surface (44a) that abuts against an inner surface (21a) of the external conductor wire (21), the second clamping portion (84) has a second abutment surface (84a) that abuts against an outer surface (21b) of the external conductor wire (21), the first abutment surface (44a) is a tapered surface inclined at an acute angle with respect to the axial direction, and an end of the external conductor wire (21) is clamped between the first abutment surface (44a) and the second abutment surface (84a).

[0047] [7] The connector (1) with a coaxial cable described in [6] above, wherein the second clamping portion (84) is cylindrical with a plurality of slits (840) extending in the axial direction, the second abutment surface (84a) is formed at the tip of the second clamping portion (84), and the second abutment surface (84a) abuts against the outer surface (21b) of the external conductor wire (21) when the second clamping portion (84) is in a state in which it is expanded in diameter by elastic deformation.

[0048] [8] The connector (1) with coaxial cable described in [7] above, wherein the outer conductor wire (21) has a wave-like shape in which a plurality of recesses (212) and a plurality of protrusions (211) are alternately formed along the axial direction, and is cut at the apex (211a) of the protrusions (211), and the second clamping portion (84) has a protrusion (841) that engages with the recess (212) closest to the first clamping portion (44).

[0049] Although the embodiments of the present invention have been described above, the invention according to the claims is not limited to the above embodiments. It should be noted that not all of the combinations of features described in the embodiments are essential to the means for solving the problems of the invention. [Explanation of symbols]

[0050] 1...Coaxial cable with connector 2...Coaxial cable 21...Outer conductor wire 211...Protruding portion 211a...top portion 212...recess 22...Inner conductor wire 3...Connector (coaxial cable connector) 4... Connector head (first member) 44... First clamping portion 44a...first contact surface 461...first screw portion 8... Plunger (second member) 831... Second screw portion 84... second clamping portion 840... slit 84a…Second contact surface

Claims

1. A coaxial cable connector to be attached to an end of a coaxial cable having a hollow tubular outer conductor wire and an inner conductor wire housed inside the outer conductor wire, a first member having a first screw portion and a first clamping portion, and a second member having a second screw portion and a second clamping portion integrally therewith; the second threaded portion is screwed into the first threaded portion, whereby the second member moves axially relative to the first member, and the end of the external conductor wire is clamped between the first clamping portion and the second clamping portion by the axial movement. Connector for coaxial cable.

2. the first clamping portion has a first contact surface that contacts an inner surface of the external conductor wire, the first contact surface being a tapered surface that is inclined at an acute angle with respect to an axial direction, the second clamping portion has a second contact surface that contacts an outer surface of the external conductor wire to clamp the end of the external conductor wire between the first contact surface and the second clamping portion; 2. The coaxial cable connector according to claim 1.

3. The second clamping portion is cylindrical and has a plurality of slits extending in the axial direction. The second abutment surface is formed on a tip end of the second clamping portion.

3. The coaxial cable connector according to claim 2.

4. the outer conductor wire has a wave-like shape in which a plurality of recesses and a plurality of protrusions are alternately formed in an axial direction, The second clamping portion has a protrusion that engages with the recess closest to the first clamping portion.

4. The coaxial cable connector according to claim 3.

5. A coaxial cable having a hollow tubular outer conductor wire and an inner conductor wire housed inside the outer conductor wire, and a connector attached to an end of the coaxial cable, The connector includes a first member having a first screw portion and a first clamping portion, and a second member having a second screw portion and a second clamping portion integrally therewith, the second threaded portion is screwed into the first threaded portion, whereby the second member moves axially relative to the first member, and the end of the external conductor wire is clamped between the first clamping portion and the second clamping portion by the axial movement. Connector with coaxial cable.

6. the first clamping portion has a first contact surface that contacts an inner surface of the outer conductor wire, the second clamping portion has a second abutment surface that abuts against an outer surface of the outer conductor wire, The first contact surface is a tapered surface inclined at an acute angle with respect to the axial direction, an end of the outer conductor wire is sandwiched between the first abutment surface and the second abutment surface; 6. The connector with a coaxial cable according to claim 5.

7. The second clamping portion is cylindrical and has a plurality of slits extending in the axial direction. The second abutment surface is formed on a tip end of the second clamping portion, the second contact surface contacts an outer surface of the outer conductor wire in a state in which the second clamping portion is expanded in diameter by elastic deformation.

7. The connector with a coaxial cable according to claim 6.

8. the external conductor wire has a wave-like shape in which a plurality of recesses and a plurality of protrusions are alternately formed along an axial direction, and is cut at the apexes of the protrusions; The second clamping portion has a protrusion that engages with the recess closest to the first clamping portion.

8. The connector with a coaxial cable according to claim 7.

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