JP4293816B2 - Cable connection structure and connection method for electrical connector - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a connection structure and a connection method of a cable to an electrical connector, and more particularly, to a connection structure that easily increases the conductor contact between the outer conductor of the cable and the outer conductor constituting the connector body, and adopts this connection structure. By doing so, for example, intermodulation that is likely to occur when two or more high-power transmission signals are input to a device such as a connector that constitutes an antenna unit used in a wireless communication base station such as a mobile phone. Suppresses strain (IM).
[0002]
[Prior art]
For example, a cable used for wireless communication such as a cellular phone usually has an inner conductor, an outer conductor that surrounds the inner conductor, an insulator filled between the inner conductor and the outer conductor, and an outer peripheral surface of the outer conductor. It consists of a covering sheath.
[0003]
When this cable is connected to another member such as another cable, an electrical connector is attached to the tip of the cable.
[0004]
A conventional electrical connector is described in Patent Document 1, for example.
As shown in FIG. 11, this electrical connector is a coaxial cable connector, and this connector 101 includes a guide 105 that holds the sheath 103 and the outer conductor 104 of the coaxial cable 102, and a connector 101 that contacts the outer conductor 104. It has an outer conductor 106, and a contact 109 of a connector that is arranged via the outer conductor 106 and an insulator 107 and contacts the inner conductor 108 of the coaxial cable 102. The guide 105 and the outer conductor 106 of the connector 101 are configured to be screwed together.
[0005]
[Patent Document 1]
JP-A-2001-351725 [0006]
When attaching the coaxial cable 102 to the connector 101, first, the sheath 103 of the coaxial cable 102 is cut by a predetermined length to expose the outer conductor 104, and after passing through the guide 105, the tip of the coaxial cable 102 is The outer conductor 104 and the insulator 110 are processed to expose the inner conductor 108, and then the inner conductor 108 is attached to the contact 109 of the connector 101 and screwed to the guide 105 while rotating the outer conductor 106 of the connector 101. As a result, the coaxial cable 102 can be attached to the connector 101.
[0007]
In the connector 101, the conductor contact between the outer conductor 106 constituting the main body portion and the outer conductor 104 of the cable 102 is maintained via the guide 105, and the conductor between the guide 105 and the outer conductor 104 of the cable 102 is maintained. The contact is the same as the outer conductor 104 on the outer surface of the outer conductor 104 formed in a corrugated pipe shape by performing a spiral wave molding process so that the cable axis positions of the peak portion 111 and the valley portion 112 change in the circumferential direction. A guide 105 having an inner peripheral surface 113 formed in a spiral shape is screwed in while rotating along the spiral shape on the outer surface of the external conductor 104 from the cable tip side.
[0008]
However, in the connector 101, since the guide 105 is made of a metal rigid body such as brass, the outer surface of the outer conductor 104 and the inner periphery of the guide 105 are in close contact with the outer conductor 104 of the cable 102 and the guide 105. It is necessary to form the surface by high-precision precision processing, which causes problems such as an increase in product cost and deterioration in workability, and in addition, the outer surface of the outer conductor 104 of the cable 102 is connected to the peaks and valleys. If the cable axis position of the cable is formed in a ring wave shape that does not change in the circumferential direction, the guide 105 cannot be screwed in while rotating the guide 105 to the outer conductor 104. There is also a problem that the guide 105 having the inner peripheral surface shape cannot be applied to the outer conductor 104 of the cable 102 having such a ring-wave outer surface shape. It is difficult to adjust the phase.
[0009]
[Problems to be solved by the invention]
In particular, an object of the present invention is to provide a cable connection structure and a connection method for an electrical connector that can easily improve the conductor contact between the outer conductor of the cable and the outer conductor constituting the connector main body.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, a cable connection structure for an electrical connector according to the present invention comprises an inner conductor, an outer conductor surrounding the central conductor, an insulator filled between the inner conductor and the outer conductor, and an outer conductor. In a structure for connecting a cable to an electrical connector, comprising a cable having a sheath covering the outer peripheral surface and an electrical connector having a contact, and connecting an inner conductor having the tip of the cable exposed by opening to the contact of the electrical connector The cable has a wavy cross-sectional shape in which the outer surface of the outer conductor has crests and troughs, and the electrical connector is a chuck made of a spring material that is divided into a plurality along the axial direction of the cable in the connected state of the cable. A clamp member having a portion, and the chuck portion of the clamp member is used to open the cable end portion using the spring force. Of crests and valleys of the outer conductor exposed by teeth, it lies in bringing into intimate contact with the crest portion only, more preferably, an electrical connector includes a plurality split spring member along the axial direction of the cable A clamp member having a chuck portion, a sleeve member that can move along the cable, and is connected to the clamp member in a state in which the chuck portion of the clamp member is accommodated when the cable is connected, and is connected to the inner conductor of the cable on the distal end side. A connector main body having a contact that has a cavity for accommodating a clamp member and a sleeve member on the distal side;
It is connected with the terminal part of a connector main-body part, and has a connection member which fixes a connector main-body part to the front-end | tip part of a cable.
[0011]
The connection structure of the cable to another electrical connector according to the present invention includes an inner conductor, an outer conductor surrounding this as a central axis, an insulator filled between the inner conductor and the outer conductor, and a sheath covering the outer peripheral surface of the outer conductor. In the cable connection structure to the electrical connector, the cable is externally connected to the electrical connector formed by connecting the inner conductor having the cable tip exposed to the electrical connector. The outer surface of the conductor has a wavy cross-sectional shape with crests and troughs, and the electrical connector moves along the cable, with a clamp member having a chuck part made of a spring material divided into a plurality along the axial direction of the cable. A sleeve that can be connected to the clamp member while the chuck part of the clamp member is housed when the cable is connected And a connector body having a contact connected to the inner conductor of the cable on the distal end side and having a cavity accommodating the clamp member and the sleeve member on the distal end side, and connected to the terminal end of the connector body section, And a connecting member that fixes the cable to the tip of the cable, and in the connected state of the cable, the chuck portion of the clamp member is used to apply the spring force to the cable to expose the cable tip. It is in close contact with the part.
[0012]
Moreover, it is preferable that the front-end | tip part of the exposed external conductor of a cable has the division | segmentation conductor part which was divided | segmented into plurality and turned up toward the axial direction of the cable.
[0013]
Furthermore, the clamp member is preferably arranged so that the tip of the chuck portion is in contact with the sheath end surface.
[0014]
Furthermore, it is preferable to provide a water stop portion that is in close contact with the outer surface of the outer conductor that is exposed by peeling off the sheath by a predetermined width at the distal end portion of the cable that is not exposed. In addition, the water stop portion is more preferably formed of a self-bonding tape that is fused to the outer surface of the outer conductor by spiral winding in a state where a predetermined tension is applied.
[0015]
The method for connecting a cable to an electrical connector according to the present invention comprises: a clamp member having a chuck portion made of a spring material divided into a plurality of portions along an axial direction of the cable; the clamp member being movable along the cable; A sleeve member coupled to the clamp member in a state in which the cable is housed, a connector body portion having a contact connected to the inner conductor of the cable on the distal end side, and a cavity accommodating the clamp member and the sleeve member on the distal end side, and a connector For an electrical connector that is connected to the end of the main body and has a connecting member that fixes the connector main body to the tip of the cable, fills the inner conductor, the outer conductor that surrounds it as the central axis, and the space between the inner conductor and the outer conductor When connecting a cable having an insulating body and a sheath covering the outer peripheral surface of the outer conductor, A step of sequentially inserting a connecting member and a sleeve member into the cable from the front end side of the cable, a step of peeling the sheath from the end of the cable by a predetermined length to expose the outer conductor, and a clamp member on the exposed outer conductor. Screwing until the chuck part hits the sheath end surface, moving the sleeve member toward the distal end side of the cable, connecting the sleeve member with the clamp member in a state where the chuck part is accommodated, and protruding from the clamp member Cutting the cable outer conductor from the tip of the cable toward the end face of the clamp member in the axial direction of the cable and then turning it back to the end face of the clamp to form a plurality of divided conductors; and by folding the outer conductor of the cable Remove the exposed insulator from the tip to the surface of the split conductor to expose the inner conductor. A step, put from the tip end of the connector body portion to the cable, there a connecting member in that it comprises a step of connecting the distal end of the connector body portion attracted to the cable head end to secure the electrical connector to the cable.
[0016]
In addition, a predetermined tension was applied to the self-adhesive tape so that the valley portion was buried in the outer surface of the outer conductor exposed by peeling off the sheath by a predetermined width at the unexposed end portion of the cable. It is preferable that the method further includes a step of spiral winding in the state.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows an example of an embodiment of a connection structure of a cable 2 to an electrical connector 1 according to the present invention.
[0018]
A cable connection structure 2 to the electrical connector 1 shown in FIG. 1 includes an inner conductor 3, an outer conductor 4 surrounding this as a central axis, an insulator 5 filled between the inner conductor 3 and the outer conductor 4, and an outer conductor. 4 is provided with a cable 2 having a sheath 6 covering the outer peripheral surface of 4 and an electrical connector 1 having a contact 7, and an inner conductor 3 a in which the tip end portion of the cable 2 is exposed by opening is connected to the contact 7 of the electrical connector 1. Is.
[0019]
The main feature of the structure of the connection structure of the cable 2 to the electrical connector 1 according to the present invention is the optimization of the conductor contact structure between the outer conductor 4 of the cable 2 and the outer conductor 9 constituting the connector body 8. More specifically, the cable 2 is formed in a so-called corrugated shape in which the outer surface of the outer conductor 4 has a wavy cross-sectional shape having a peak portion 10 and a valley portion 11, and the electrical connector 1 is connected to the cable 2. The clamp member 13 has a chuck portion 12 made of a spring material divided into a plurality of portions along the axial direction C of the cable 2, and the chuck portion 12 of the clamp member 13 is connected to the cable 2 using the spring force. In particular, the outer conductor 4 of the cable 2 and the connector main body 8 are constructed by adopting this configuration. Conductor contact with the formed outer conductor 9 can be easily increased.
[0020]
That is, the outer surface of the outer conductor 4 of the cable 2 is corrugated, and the contact pressure between the outer conductor 4 and the chuck portion 12 is increased by forming the chuck portion 12 of the clamp member 13 with a spring material. The outer conductor contact between the outer conductor 4 of the cable 2 and the outer conductor 9 of the connector 1 can be realized stably.
In addition, when the chuck portion 12 of the clamp member 13 has an uneven shape (not shown) corresponding to each of the crest portion 10 and the trough portion 11 constituting the outer conductor 4 of the cable 2, Along with the outer surface of the outer conductor 4a formed in a spiral shape, it can be easily attached while screwing, while the chuck portion 12 of the clamp member 13 has a flat inner surface as shown in FIG. In the case where the outer conductor 4a is formed, the chuck portion 12 is configured to move between the peaks 10a, 10a of the outer conductor 4a, so that the outer surface of the outer conductor 4a of the cable 2 is formed in a spiral wave shape. In addition, even when it is formed in a ring wave shape, it can be simply attached to the outer conductor 4a of the cable 2 while sliding between the peaks.
[0021]
In addition, the end portion of the exposed outer conductor 4a of the cable 2 has a divided conductor portion 14 that is divided into a plurality of portions in the axial direction C of the cable 2 and turned back. It is preferable for enhancing the contact of the conductor with the outer conductor 9 constituting the main body 8 more stably.
[0022]
The larger the number of the divided conductors 14, the better the contact stability, but the workability deteriorates. Therefore, in order to satisfy both performances, it is preferably 4 to 8, and optimally 8 pieces. is there.
[0023]
Furthermore, it is preferable that the clamp member be arranged so that the tip of the chuck portion is in contact with the sheath end surface, because the phase can be easily adjusted with a cable.
[0024]
Further, the connector 101 described in Patent Document 1 is a water stop means for preventing water that has entered the gap 114 between the exposed outer conductor 104 and the sheath 103 at the tip of the cable 102 from flowing into the connector 101. As shown in FIG. 11, between the exposed outer conductor 104 at the end of the cable 102 and the guide 105 sandwiching the outer conductor 104, a running water prevention gasket 115 covers the periphery of the exposed outer conductor 104. This water run prevention gasket 115 has an inner peripheral surface molded into a spiral wave shape similar to the outer surface shape of the outer conductor of the cable and is made of an elastic material such as silicon rubber. Inserted between the exposed outer conductor and the guide 105, around the gasket 115 is a compression band 116 made of a spring material having a C-section for tightening, and a compression band 116 is provided at the upper and lower positions of the compression band. Inward And set screw 117 for energizing is provided.
[0025]
However, since the running water prevention gasket 115 described in Patent Document 1 requires the inner peripheral surface to be formed into a spiral wave, a mold is required, and the outer surface of the outer conductor of the cable and the running water prevention are required. The gasket 115 must be precisely machined into the same spiral wave shape as the inner peripheral surface, and it is difficult to closely bond these surfaces at the optimum position. In addition, even if the running water prevention gasket 115 is strongly tightened radially inward with the set screw 117, the gasket 115 is made of rubber, so that the inner peripheral surface of the gasket 115 is completely on the outer surface of the outer conductor of the cable, particularly on the valley. It cannot be adhered to.
[0026]
For this reason, in the present invention, when it is necessary to provide a water stop means, the outer surface of the outer conductor 4b, which is exposed by peeling off the sheath 6 by a predetermined width, is attached to the distal end portion of the cable 2 that is not exposed. It is preferable to provide a water stop portion 15 that is in close contact so that the valley portion 11 is buried. In addition, although the said predetermined width changes with pitches (pitch between valleys), Preferably it is 2 pitches or more. For example, when the pitch is 2.8 mm, the predetermined width is preferably about 14 mm.
[0027]
The water stop portion 15 is formed of, for example, a self-bonding tape that is fused to the outer surface of the outer conductor 4b by spiral winding in a state where a predetermined tension is applied so that the valley portion 11 of the outer conductor 4b is buried. It is preferable to provide it closely in contact with.
[0028]
Here, the self-adhesive tape means a tape that is completely fused by winding it while applying tension to obtain excellent insulation and water tightness, and further, after winding the tape. Fusion may be promoted by applying pressure such as finger pressure.
[0029]
In addition, when forming the water stop part 15 using the self-bonding tape, the water stop part 15 is spirally wound over the entire surface of the exposed external conductor 4b of the cable 2 while shifting by about half the width of the tape. After the formation, as shown in FIG. 1, the protective layer 16 may be formed by spirally winding a protective tape having excellent weather resistance. However, as will be described later, FIGS. 10 (e) and (f) As shown in Fig. 2, after winding the self-adhesive tape vertically to fill the valleys of two or more pitches of the outer conductor, the same self-adhesive tape is placed sideways instead of the protective tape 16 It is more preferable to form a tape layer formed by winding one or more rounds so as to cover the peak portion.
[0030]
1 mainly includes a clamp member 13, a sleeve member 17, a connector main body 8, and a connecting member 18.
[0031]
The clamp member 13 includes a ring-shaped portion 19 having an outer peripheral surface that is screw-connected to the sleeve member, and a chuck portion 12 made of a spring material such as spring steel, which is divided into a plurality along the axial direction C of the cable 2. When the cable is connected, the divided conductor 14 provided at the tip of the cable is strongly pressed between the ring-shaped portion 19 of the clamp member 13 and the outer conductor 9 constituting the connector main body portion 8 to stabilize the connection. External conductor contact can be obtained. In addition, it is preferable that the clamp member is disposed so that the tip of the chuck portion is in contact with the sheath end surface because the phase can be easily adjusted with a cable.
[0032]
The sleeve member 17 includes a large-diameter portion 20 having an inner peripheral surface that can be screw-coupled to the outer peripheral surface of the ring-shaped portion 19 of the clamp member 13, and a small-diameter portion 21 having an inner diameter that can accommodate the chuck portion of the clamp member when a cable is connected. The sleeve member 17 can move along the cable 2 and is connected to the clamp member 13 in a state in which the chuck portion 12 of the clamp member 13 is housed when the cable is connected.
[0033]
The connector body 8 includes an external conductor 9 and a connection member 22 for connecting to another member such as another cable. The external conductor 9 and the connection member 22 are urged outward in the radial direction. The ring-shaped springs 23 are connected.
[0034]
The outer conductor 9 has a contact 7 connected to the inner conductor 3a of the cable 2 via a ring-shaped insulator 24 on the tip side, and the tip of the outer conductor 9 extending in a cylindrical shape around the contact 7 And a cavity for accommodating the clamp member 13 and the sleeve member 17 on the distal end side.
[0035]
The connecting member 18 has an outer peripheral surface that can be screw-connected to the inner peripheral surface of the end portion of the outer conductor 9 that constitutes the connector main body 8, and by screw-connecting the connector main body 8 and the connecting member 18 when the cable is connected. The connection structure of the cable to the electrical connector according to the present invention can be obtained.
[0036]
In FIG. 1, a washer 26 is inserted between the outer conductor 9 constituting the connector main body 8 and the connecting member 18, and a shrinkable tube 27 is disposed so as to cover the outer periphery of the connection portion between the cable and the connector. It is.
[0037]
Next, an example of a method for connecting a cable to the electrical connector according to the present invention will be described in detail with reference to FIGS.
[0038]
FIG. 2 is an exploded view showing components of the electrical connector 1, which are the connector main body portion 8, the clamp member 13, the sleeve member 17, the washer 26, and the connecting member 18 from the right.
[0039]
First, as shown in FIG. 3, after the connecting member 18, the washer 26 and the sleeve member 17 are sequentially inserted into the cable 2 from the distal end side of the cable 2, the distal end portion of the cable has a predetermined length, preferably 20 to 25 mm. The sheath 6 is peeled off to expose the outer conductor 4a.
[0040]
As shown in FIG. 4, the clamp member 13 is screwed onto the exposed outer conductor 4a until the chuck portion 12 abuts against the sheath end surface 6a and is attached to the cable 2.
[0041]
Next, the sleeve member 17 is moved toward the distal end side of the cable 2, and the sleeve member 17 is tightened in a state where the chuck portion 12 is accommodated to be screw-connected to the clamp member 13 (FIG. 5).
[0042]
As shown in FIG. 7, the outer conductor 4a of the cable 2 protruding from the clamp member 13 is cut from the front end to the end face 28 of the clamp member 13 in the axial direction C of the cable 2 as shown in FIG. Then, the plurality of divided conductor portions 14 are formed by folding back to the end face 28 side. still. After the folded divided conductor portion 14 is flattened and spread out on the end face 28, a portion protruding radially outward from the end face 28 (portion 29 indicated by a dotted line in FIG. 7) is removed by cutting. Is preferred.
[0043]
Thereafter, the insulator 5a exposed when the outer conductor 4a of the cable 2 is folded back is removed from the tip of the insulator 5a to the surface of the divided conductor portion 14 as shown in FIG. 8 to expose the inner conductor 3a.
[0044]
Then, the connector main body 8 is put on the cable 2 from the front end side, and the connecting member 18 is drawn toward the front end side of the cable 2, and thereafter, as shown in FIG. 9, the end portion of the outer conductor 9 constituting the connector main body portion 8. The electrical connector 1 is fixed to the cable 2 by being tightened into the screw and fixed to the cable 2, whereby the connection structure of the cable to the electrical connector of the present invention can be obtained.
[0045]
Next, an example of a method for providing the water stop portion 15 in the cable 2 having such a connection structure will be described with reference to FIGS. 10 (a) to 10 (f).
[0046]
First, the sheath 6 is peeled off by a predetermined width (10 to 30 mm) on the unextracted distal end portion of the cable 2 having such a connection structure. For example, as shown in FIG. 10 (a), the sheath 6 is peeled off by attaching an ideal 31 having a double-edged blade 30 to the cable position on the connecting portion side and rotating it once in the circumferential direction of the cable 2. Cut W at both width end positions 32a and 32b of W, and then cut vertically 34 with a cutter 33 from the connector side so as not to damage the outer conductor as shown in FIG. 10 (b). .
[0047]
After that, as shown in FIG. 10 (c), the sheath 6 in the portion cut with the pliers 35 so as not to damage the outer conductor 4b is peeled off to expose the outer conductor 4b (FIG. 10 (d)).
[0048]
Then, as shown in FIG. 10 (e), first, the self-bonding tape 36 is wound vertically to fill the valley 11b of the outer conductor 4b, and then, as shown in FIG. 10 (f). In addition, the self-bonding tape 36 is wound side by side not only on the exposed outer conductor 4b but also on the sheath portions located on both sides of the outer conductor 4b. When the self-adhesive tape 36 is wound sideways, it is sufficient to wind it one or more times between the cable sheath and the outer conductor 4b. However, only the sheath portion located on both sides of the outer conductor 4b has two turns. The above winding is preferable in terms of watertightness (waterproofness).
[0049]
The above description is merely an example of the embodiment of the present invention, and various modifications can be made within the scope of the claims.
[0050]
【The invention's effect】
According to the present invention, in particular, it is possible to provide a cable connection structure and a connection method for an electrical connector that can easily increase the conductor contact between the external conductor of the cable and the external conductor constituting the connector main body. It was.
[0051]
Further, if the connection structure of the present invention is employed, better contact, loosening against vibration and impact can be effectively prevented, and intermodulation distortion (IM) can be suppressed.
[0052]
Further, by arranging the clamp member so that the tip of the chuck portion is in contact with the sheath end surface, the positioning can be performed and the cable can be easily cut, so that the phase alignment with the cable is facilitated.
[0053]
Furthermore, by providing a water stop portion that is in close contact with the outer surface of the outer conductor exposed by peeling off the sheath by a predetermined width at the distal end portion of the cable that is not exposed, so that the valley portion is buried. Intrusion of water into the connection portion between the cable and the connector can be prevented, and insulation short-circuiting of components constituting the connection unit can be suppressed.
[0054]
If the connection structure of the present invention is adopted, for example, two or more high-power transmission signals are input to a device such as a connector constituting an antenna unit used in a radio communication base station such as a mobile phone. Intermodulation distortion (IM) that is likely to occur at the time of occurrence can be effectively suppressed.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing an example of a connection structure of a cable to an electrical connector according to the present invention.
2 is an enlarged perspective view showing a cable connection structure by removing a hood from the electrical connector of FIG. 1. FIG.
FIG. 3 is a plan view for explaining a method of connecting a cable to the electrical connector according to the present invention.
FIG. 4 is a plan view showing one of main processes for explaining a method of connecting a cable to an electrical connector according to the present invention.
FIG. 5 is a plan view showing one of main processes for explaining a method of connecting a cable to an electrical connector according to the present invention.
FIG. 6 is a plan view showing one of main processes for explaining a method of connecting a cable to an electrical connector according to the present invention.
FIG. 7 is a plan view showing one of main processes for explaining a method of connecting a cable to an electrical connector according to the present invention.
FIG. 8 is a plan view showing one of main processes for explaining a method of connecting a cable to an electrical connector according to the present invention.
FIG. 9 is a plan view showing one of main processes for explaining a method of connecting a cable to an electrical connector according to the present invention.
FIGS. 10A to 10F are plan views showing main steps for explaining a method of providing a water stop portion 15 in the cable 2 having the connection structure of the present invention.
FIG. 11 is a side view showing a connection structure of a cable to a conventional electrical connector, and only the upper half is a longitudinal sectional view.
[Explanation of symbols]
1 Electrical Connector 2 Cable 3 Inner Conductor 4 Outer Conductor 5 Insulator 6 Sheath 7 Contact 8 Connector Body 9 Outer Conductor
10 Yamabe
11 Tanibe
12 Chuck part
13 Clamp member
14 Split conductor
15 Water stop
16 Protective layer
17 Sleeve member
18 Connecting members
19 Ring-shaped part
20 Large diameter part
21 Small diameter part
22 Connecting material
23 Ring-shaped spring
24 Ring insulator
25 Tip of outer conductor
26 Washer
27 Shrink tube
28 End face of clamp member
29 pieces
30 blades
31 Ideal
32a, 32b width end position
33 cutter
34 notches
35 pliers
36 Self-bonding tape

Claims (9)

An inner conductor, an outer conductor surrounding this as a central axis, an insulator filled between the inner conductor and the outer conductor, a cable having a sheath covering the outer peripheral surface of the outer conductor, and an electrical connector having a contact, In the connection structure of the cable to the electrical connector formed by connecting the inner conductor where the tip of the cable is exposed by connecting to the contact of the electrical connector,
The cable has a wavy cross-sectional shape with the outer surface of the outer conductor having peaks and valleys,
The electrical connector has a clamp member having a chuck portion made of a spring material divided into a plurality along the axial direction of the cable in a cable connection state, and uses the spring force of the chuck portion of the clamp member, A structure for connecting a cable to an electrical connector, wherein the outer end of the cable is exposed by opening and the outer conductor is in close contact with only the peak of the peak and valley . Electrical connector
  A clamp member having a chuck portion made of a spring material divided into a plurality along the axial direction of the cable;
  A sleeve member that can move along the cable and is connected to the clamp member in a state in which the chuck portion of the clamp member is housed when the cable is connected;
  A connector main body having a contact connected to the inner conductor of the cable on the distal end side and having a cavity for accommodating the clamp member and the sleeve member on the distal end side;
  A connecting member that is connected to the end of the connector body and fixes the connector body to the tip of the cable;
The connection structure of the cable with respect to the electrical connector of Claim 1 which has these. An inner conductor, an outer conductor surrounding this as a central axis, an insulator filled between the inner conductor and the outer conductor, a cable having a sheath covering the outer peripheral surface of the outer conductor, and an electrical connector having a contact, In the connection structure of the cable to the electrical connector formed by connecting the inner conductor where the tip of the cable is exposed by opening to the contact of the electrical connector,
The cable has a wavy cross-sectional shape with the outer surface of the outer conductor having peaks and valleys,
  Electrical connector
A clamp member having a chuck portion made of a spring material divided into a plurality along the axial direction of the cable;
  A sleeve member that can move along the cable and is connected to the clamp member in a state in which the chuck portion of the clamp member is housed when the cable is connected;
  A connector main body having a contact connected to the inner conductor of the cable on the distal end side and having a cavity for accommodating the clamp member and the sleeve member on the distal end side;
  A connecting member that is connected to the end of the connector body and fixes the connector body to the tip of the cable;
Have
Connecting the cable to the electrical connector, wherein the chuck portion of the clamp member is brought into intimate contact with the peak portion of the outer conductor exposed by the lead-out by using the spring force in the cable connection state. Construction. The connection structure of the cable to the electrical connector according to claim 1 , wherein the tip end portion of the exposed external conductor of the cable has a divided conductor portion that is divided into a plurality of portions and folded back in the axial direction of the cable. The cable connection structure for an electrical connector according to any one of claims 1 to 4 , wherein the clamp member is disposed so that the tip of the chuck portion is in contact with the sheath end surface.   6. A water stop portion is provided on a front end portion of the cable that is not exposed to the outer surface of the outer conductor exposed by peeling off the sheath by a predetermined width so that the valley portion is buried tightly. A connection structure of a cable to the electrical connector according to any one of the above.   The electrical connector according to any one of claims 1 to 6, wherein the water stop portion is formed of a self-bonding tape that is fused to the outer surface of the external conductor by spiral winding in a state where a predetermined tension is applied. Cable connection structure against. A clamp member having a chuck portion made of a spring material divided into a plurality along the axial direction of the cable, and a sleeve that can move along the cable and is connected to the clamp member while the chuck portion of the clamp member is housed when the cable is connected A connector main body having a member, a contact connected to the inner conductor of the cable on the distal end side, a connector main body having a cavity for accommodating a clamp member and a sleeve member on the distal end, and a connector main body connected to the end of the connector main body, For an electrical connector having a connecting member for fixing the cable to the tip of the cable, an inner conductor, an outer conductor surrounding this as a central axis, an insulator filled between the inner conductor and the outer conductor, and an outer peripheral surface of the outer conductor In connecting a cable having a sheath covering
A step of sequentially inserting a connecting member and a sleeve member into the cable from the front end side of the cable;
Peeling the sheath from the cable tip by a predetermined length to expose the outer conductor;
Screwing the clamp member onto the exposed outer conductor until the chuck portion abuts against the sheath end surface; and
Moving the sleeve member toward the distal end side of the cable and coupling the sleeve member to the clamp member in a state in which the chuck portion is stored;
A step of cutting the outer conductor of the cable protruding from the clamp member from the tip to the end face of the clamp member in the axial direction of the cable and then folding back to the clamp end face to form a plurality of divided conductor portions;
Removing the insulator exposed by folding the outer conductor of the cable from its tip to the surface of the split conductor, and exposing the inner conductor;
Covering the connector body from the tip side of the cable, drawing the connecting member to the cable tip side and connecting it to the end of the connector body to fix the electrical connector to the cable;
A method for connecting a cable to an electrical connector, comprising: In a state where a predetermined tension is applied so that the trough is buried in the outer surface of the outer conductor exposed by peeling off the sheath by a predetermined width at the unexposed end portion of the cable. The method for connecting a cable to an electrical connector according to claim 8 , further comprising a spiral winding step.

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