JP2010182632A - Fixing member for cable connector, cable connector, cable with the same, and optical cable connector - Google Patents

Abstract

To provide a fixing member for a cable connector which can prevent a seam from being disconnected and deformed.
A fixing member 1a for a cable connector formed into a substantially cylindrical shape by bending a plate-like member, having two sides on which an engaging convex portion 12a and an engaging concave portion 13a are formed. In addition, an engagement recess 12a formed on one side of these two sides is formed into an approximately cylindrical shape by abutting these two sides, and an engagement recess formed on the other side. While engaging 13a, the engaging convex part 12a overlaps with the outer peripheral surface of the main-body part 11a formed in a substantially cylindrical shape.
[Selection] Figure 1

Description

  The present invention relates to a fixing member for a cable connector, a cable connector, a cable with a cable connector, and an optical cable connector, and particularly preferably for a cable connector used for mounting a terminal fitting, a connector housing, or the like on a cable. The present invention relates to a fixing member, a cable connector to which the fixing member is applied, a cable (cable with a cable connector) to which the cable connector is attached, and an optical cable connector.

  Inside a vehicle such as an automobile, a wire harness for connecting electrical devices and electronic devices to each other is routed. Electric signals transmitted and received between these electric devices and electronic devices have been increased in speed (that is, increased in frequency). For this reason, a shielded cable may be used for the electric wire which comprises a wire harness so that a high frequency electric signal can be transmitted / received stably.

  Coaxial cables are widely used as a kind of shielded cable. A general coaxial cable includes an inner conductor that functions as an electrical signal path, an outer conductor that functions as a shield conductor, an insulator interposed between the inner conductor and the outer conductor, and a covering material that covers the outer conductor. Have. Then, the inner conductor, the insulator, the outer conductor, and the covering material are arranged coaxially. One or more conductive wires are applied to the inner conductor. As the outer conductor, a braided wire in which a plurality of conductive wires are knitted in a net shape or a foil made of a conductor is applied. The outer conductor covers the periphery of the inner conductor without any gap, so that the inner conductor is electromagnetically shielded.

  In general, a cable connector attached to a terminal portion of a coaxial cable generally includes an inner conductor terminal electrically connected to an inner conductor, an outer conductor terminal electrically connected to an outer conductor, an inner conductor terminal, and an outer conductor terminal. And an insulator interposed between the conductor terminals (this insulator is formed of a material having a predetermined dielectric constant). Further, a connector housing that houses the inner conductor terminal, the outer conductor terminal, and the insulator may be provided. Then, at the end portion of the coaxial cable, the inner conductor terminal is attached to the inner conductor exposed by peeling off the insulator. In addition, an outer conductor terminal is attached to the outer conductor exposed by peeling off the covering material.

  By the way, in the operation | work which routes a wire harness inside vehicles, such as a motor vehicle, tensile force may be added to a wire harness (or each cable which comprises a wire harness). For example, a cable connector attached to a cable may be pulled for a routing operation. Then, a force is applied to the wire harness so that the cable connector is pulled out from the terminal portion of the cable. In addition, a similar force may be applied to the wire harness due to vibration during traveling of the vehicle. For this reason, it is preferable that especially the cable connector applied to the wire harness of vehicles, such as a motor vehicle, has the structure couple | bonded firmly with a cable.

  An example of a structure that can be firmly coupled to a cable is disclosed in Patent Document 1. The cable connector disclosed in Patent Document 1 includes an inner conductor terminal, an outer conductor terminal, and a sleeve (fixing member). Then, a sleeve is inserted inside the outer conductor of the coaxial cable (referred to as “shield layer” in Patent Document 1), and a crimping piece provided on the outer conductor terminal from the outer side of the outer conductor (in Patent Document 1, “Shield A layer crimping barrel) is crimped. As a result, the outer conductor of the coaxial cable is sandwiched between the sleeve and the crimping piece of the outer conductor terminal, and the outer conductor terminal is fixed to the coaxial cable and electrically connected to the outer conductor.

  According to such a configuration, since the outer conductor of the coaxial cable is sandwiched between the sleeve and the crimping piece of the outer conductor terminal, for example, only the crimping piece of the outer conductor terminal is caulked outside the outer conductor of the coaxial cable. Compared to the configuration for crimping, it is possible to improve the fixing force between the outer conductor and the outer conductor terminal of the coaxial cable.

  Some of such sleeves are formed by punching with a die and a punch, and others are formed by cutting. That is, these sleeves are formed seamlessly. In addition, there is one formed by bending a plate material.

  Of these, the seamlessly formed sleeve is more expensive than a sleeve formed by bending a plate material. For this reason, when the sleeve formed seamlessly is applied, there is a possibility that the price of the wire harness is increased or the cost is hindered. In addition, a predetermined process (for example, a process for improving the frictional force) may be applied to the surface of the sleeve in order to increase the adhering force. Is difficult.

  On the other hand, a sleeve formed by bending a plate material is less expensive than a sleeve formed seamlessly, and has an advantage that the surface can be easily processed. However, a sleeve formed by bending a plate material may be deformed due to a seam being removed when a force that compresses from the outer peripheral side is applied. For this reason, the sleeve formed by bending the plate material has a problem that the adhering force is weaker than the sleeve formed seamlessly. Further, when the seam is detached and deformed, there is a risk of physical damage to the inner conductor of the coaxial cable.

Japanese Patent Laid-Open No. 2005-197068

  In view of the above circumstances, the problem to be solved by the present invention is a fixing member for a cable connector capable of preventing the seam from being deformed, a cable connector provided with the fixing member, and a cable connector to which the cable connector is attached. It is to provide a cable, or to provide a fixing member for a cable connector, a cable connector, and a cable with a cable connector, which are inexpensive and can improve the fixing force.

  In order to solve the above-mentioned problems, the present invention is a fixing member for a cable connector formed in a substantially cylindrical shape, and has two sides on which an engaging convex portion and an engaging concave portion are formed, and the two sides protrude. The engagement protrusion is formed into a substantially cylindrical shape by being combined, and the engagement protrusion formed on one of the two sides is engaged with the engagement recess formed on the other side, and the engagement protrusion The gist is that the portion is superimposed on the outer peripheral surface of the portion formed in a substantially cylindrical shape.

  It is preferable that serrations are formed on the surface of the substantially cylindrical portion.

  The present invention is a cable connector attached to a terminal portion of a shielded cable including an inner conductor, an outer conductor covering the inner conductor, and a covering material covering the outer conductor, the fixing member for the cable connector, An outer conductor terminal provided with a crimping piece for crimping the outer conductor of the shielded cable, and the tip of the outer conductor protrudes from the tip of the covering material at the end of the shielded cable, and is fixed for the cable connector. A member is disposed inside the protruding covering material, and a crimping piece provided on the outer conductor terminal is crimped to the outside of the outer conductor protruding from the leading end of the covering material, whereby the tip of the covering material The outer conductor protruding from the cable connector is sandwiched between the fixing member for the cable connector and the crimping piece provided on the outer conductor terminal. A.

  The outer conductor that protrudes from the front end of the covering material is folded back to the rear end side of the covering material, and the fixing member for the cable connector includes an outer side of the covering material and an inner side of the outer conductor that protrudes from the covering material. The crimping piece provided between the outer conductor terminal and the outer conductor terminal is crimped to the outside of the outer conductor that is folded back and protrudes from the covering material, so that the outer conductor that is folded back and protrudes from the covering material is The structure clamped between the fixing member for cable connectors and the crimping piece provided in the said outer conductor terminal may be sufficient.

  The present invention provides a shielded cable comprising an inner conductor, an outer conductor covering the inner conductor, and a covering material covering the outer conductor, a fixing member for the cable connector, and a crimping piece for crimping the outer conductor of the shielded cable. An outer conductor terminal provided at the end of the shielded cable, and a tip of the outer conductor protrudes from a tip of the covering material, and a fixing member for the cable connector is disposed inside the protruding covering material. And the crimping piece provided on the outer conductor terminal is crimped to the outside of the outer conductor protruding from the tip of the covering material, so that the outer conductor protruding from the tip of the covering material is used for the cable connector. The gist is to be sandwiched between a fixing member and a crimping piece provided on the outer conductor terminal.

  The outer conductor that protrudes from the front end of the covering material is folded back to the rear end side of the covering material, and the fixing member for the cable connector includes an outer side of the covering material and an inner side of the outer conductor that protrudes from the covering material. The crimping piece provided between the outer conductor terminal and the outer conductor terminal is crimped to the outside of the outer conductor that is folded back and protrudes from the covering material, so that the outer conductor that is folded back and protrudes from the covering material is The structure clamped between the fixing member for cable connectors and the crimping piece provided in the said outer conductor terminal may be sufficient.

  The present invention includes an optical fiber strand and a tension member that reinforces the optical fiber strand, and is attached to a terminal portion of an optical fiber cable in which the optical fiber strand and the tension member are integrated by a sheath material. An optical cable connector, comprising: a fixing member for the cable connector; and a crimping member formed in a substantially annular shape, wherein the tip of the tension member projects from the tip of the sheath material at the tip of the optical fiber cable. The front end of the tension member is folded back to the rear end side of the optical fiber cable, the fixing member for the cable connector is disposed inside the folded tension member, and the crimp member is folded back. A tension member disposed outside the member, wherein the folded tension member is connected to the cable connector; It is an Abstract that is sandwiched between the fixing member and the compression member of use.

  The present invention provides an optical fiber cable, an optical fiber cable having a tension member that reinforces the optical fiber element, the optical fiber element and the tension member being integrated by a sheath material, and the cable connector. A fixing member and a crimping member formed in a substantially annular shape, wherein the tip of the optical fiber cable has a tip of the tension member protruding from the tip of the sheath material, and the tip of the protruding tension member is the tip of the optical fiber cable. Folded to the rear end side, the first support member is disposed inside the folded tension member, and the second support member is disposed outside the folded tension member. The summary is that the folded tension member is sandwiched between the fixing member for the cable connector and the crimping member. It is intended to.

  According to the present invention, since the plate-like member is formed into a cylindrical shape by bending, the manufacturing cost can be reduced compared to a configuration in which the plate-like member is formed into a cylindrical shape by cutting. For this reason, an increase in the price of the cable connector or the cable with the cable connector can be prevented.

  Further, according to the present invention, the engaging convex portion and the engaging concave portion are respectively formed on the two abutted sides, and the engaging concave portion formed on one side is formed on the other side. (That is, between the engaging protrusions) and the engaging protrusion overlaps with the outer peripheral surface of the portion formed in a substantially cylindrical shape. For this reason, even if a force is applied to the portion where the sides are butted inward, the engagement convex portion is superimposed on the outer peripheral surface of the portion that is formed in a substantially cylindrical shape. It can prevent that a part deform | transforms so that it may sink inside. Therefore, even when a compressive force is applied, the abutted sides are prevented from being separated and maintained in a cylindrical shape. Further, it is possible to prevent the diameter of the portion formed in the cylindrical shape from being reduced.

  Further, according to the present invention, the engaging convex portions and the engaging concave portions are engaged with each other so as to interleave each other, and the moving convex portion is superimposed on the outer peripheral surface of the portion formed in a substantially cylindrical shape. For this reason, it is prevented that the abutted sides are separated from each other. Therefore, even when a compressive force is applied to the portion formed in the cylindrical shape from the outer peripheral side, the diameter of the portion formed in the cylindrical shape is prevented from being reduced.

  Further, when the serrations are formed on the surface of the portion formed in the cylindrical shape, the fixing force with the cable can be improved, and the cable connector can be firmly attached to the cable.

  According to the present invention, the outer conductor of the cable is held between the fixing member for the cable connector and the crimping piece provided on the outer conductor terminal. The fixing member for the cable connector can maintain a cylindrical shape even when a compressive force is applied, and prevent or suppress a decrease in the diameter of the cylindrical portion. For this reason, the outer conductor of the cable can be firmly crimped by the fixing member for the cable connector and the crimping piece of the outer conductor terminal. Therefore, the joint strength between the cable and the outer conductor terminal can be improved.

  According to the present invention, the tension member of the optical fiber cable is clamped and held between the cable connector fixing member and the crimping member. The fixing member for the cable connector can be maintained or maintained in a cylindrical shape even when a compressive force is applied, and the diameter of the cylindrical portion is prevented or suppressed from being reduced. For this reason, the tension member of the optical fiber cable can be firmly crimped by the fixing member for the cable connector and the crimping member. Therefore, the joint strength between the cable and the connector can be improved.

It is the figure which showed typically the structure of the fixing member for cable connectors concerning embodiment of this invention, (a) is an external appearance perspective view, (b) is sectional drawing. It is the external appearance perspective view which showed the state before forming the fixing member for cable connectors concerning embodiment of this invention in a cylinder shape. It is the external appearance perspective view which showed the modification of the fixing member for cable connectors concerning embodiment of this invention. It is the external appearance perspective view which showed the modification of the fixing member for cable connectors concerning embodiment of this invention. It is the external appearance perspective view which showed the modification of the fixing member for cable connectors concerning embodiment of this invention. It is the disassembled perspective view which showed typically the structure of the cable connector concerning embodiment of this invention. It is sectional drawing which showed typically the cross-section of the cable connector (cable with a cable connector) concerning embodiment of this invention. It is the schematic diagram which showed the assembly | attachment order of the cable connector (cable with a cable connector) concerning embodiment of this invention. It is the figure which showed typically the cross-section of the optical fiber cable with which the cable connector concerning embodiment of this invention is applied. It is the disassembled perspective view which showed typically the structure of the cable connector concerning embodiment of this invention. It is sectional drawing which showed typically the structure of the connector housing of the cable connector concerning embodiment of this invention. It is sectional drawing which showed typically the procedure which attaches the cable connector concerning embodiment of this invention to an optical fiber cable. It is sectional drawing which showed typically the cross-section of the cable with a cable connector with which the cable connector concerning embodiment of this invention was mounted | worn.

  Embodiments of the present invention will be described below in detail with reference to the drawings.

  1A and 1B are diagrams schematically showing the configuration of a cable connector fixing member 1a according to an embodiment of the present invention. FIG. 1A is an external perspective view, and FIG. 1B is a cross-sectional view. is there. As shown in FIGS. 1 (a) and 1 (b), a cable connector fixing member 1a according to an embodiment of the present invention has a substantially cylindrical main body 11a which is hollow and penetrates in the front-rear direction. . The main body 11a is a portion that is formed into a cylindrical shape by rounding a flat plate by bending or the like. The main body portion 11a has a joint portion 15a with which the outer periphery of the flat plate is abutted. In the joint portion 15a, the plurality of engaging convex portions 12a and the engaging concave portions 13a are engaged so as to be alternately arranged. In particular, as shown in FIG. 1B, at least a part of each engagement convex portion 12a is superimposed on the outer peripheral surface of the main body portion 11a formed in a substantially cylindrical shape.

  FIG. 2 is an external perspective view schematically showing a state (that is, a flat plate state) before the cable connector fixing member 1a according to the embodiment of the present invention is bent and formed into a cylindrical shape. . As shown in FIG. 2, the cable connector fixing member 1 a according to the embodiment of the present invention has a substantially quadrangular flat plate shape before being bent. A plurality of engaging convex portions 12a are formed on two opposing sides of the four outer sides. This engagement convex part 12a is a tongue-like part extended toward the outer side from the outer periphery of the main-body part 11a. The plurality of engaging protrusions 12a are formed at a predetermined interval. And between the engagement convex parts 12a becomes the engagement recessed part 13a. Thus, the engaging convex part 12a and the engaging recessed part 13a are alternately formed in two opposing sides of the outer periphery of the main body part 11a.

  The sides where the engaging convex portions 12a and the engaging concave portions 13a are formed are bent and raised by pressing or the like. The sides where the engaging convex portion 12a and the engaging concave portion 13a are formed are abutted. Thereby, the fixing member 1a for the cable connector according to the embodiment of the present invention is formed in a substantially cylindrical shape. When the sides where the engaging convex portion 12a and the engaging concave portion 13a are formed are brought into contact with each other, the engaging convex portion 12a formed on each side becomes the engaging concave portion 13a formed on the other side (that is, the engaging concave portion 13a). Engage so that it fits in between the convex portions 12a. And the engagement convex part 12a of each side is made to overlap with the outer peripheral surface of the main-body part 11a formed in a column shape. Thereby, the fixing member 1a for the cable connector according to the embodiment of the present invention configured as shown in FIG. 1 is formed.

  According to such a configuration, even when a compressive force is applied from the outer peripheral surface side to the cable connector fixing member 1a according to the embodiment of the present invention, the abutted sides are prevented from separating. Or suppressed.

  That is, a simple quadrilateral plate material that is not formed with an engaging convex portion or an engaging concave portion is bent and formed into a substantially cylindrical shape, or an engaging convex portion or an engaging concave portion is formed. In the configuration in which the engaging convex portion does not overlap the outer peripheral surface of the main body portion, when a force toward the inside is applied to the portion where the sides are abutted (that is, the joint portion), the joint portion is deformed so as to sink into the inner peripheral side. For this reason, the abutted sides are easily separated. When the butted sides are separated from each other, the main body cannot easily maintain a cylindrical shape, or the diameter of the cylinder tends to be small.

  On the other hand, according to the fixing member 1a for a cable connector according to the embodiment of the present invention, the engaging convex portion 12a and the engaging concave portion 13a are formed on the two abutted sides, respectively, and formed on one side. The engaging convex portion 12a engages with an engaging concave portion 13a formed on the other side (that is, between the engaging convex portions 12a), and the engaging convex portion 12a of the substantially cylindrical main body portion 11a. Superimpose on the outer peripheral surface. For this reason, even if a force toward the inner side is applied to the joint portion 15a, the engaging convex portion 12a is superimposed on the outer peripheral surface of the substantially cylindrical main body portion 11a, so the abutted portion is on the inner side. It is possible to prevent or suppress deformation so as to sink. For this reason, even if it is a case where compression force is added from the outer peripheral side, it will prevent or suppress that the edge | side which faced | matched in the junction part 15a isolate | separates. Therefore, the main body 11a is maintained in a cylindrical shape. Further, the diameter of the main body 11a is prevented or suppressed.

  In addition, a simple quadrilateral plate material that is not formed with an engaging convex part or an engaging concave part may be bent and formed into a substantially cylindrical shape, or an engaging convex part or an engaging concave part may be formed. In the configuration in which the engaging convex portion does not overlap the outer peripheral surface of the main body portion, the sides abutted at the joint portion are easily separated from each other so that they can be easily separated. If a compressive force is applied in a state where the abutted sides are separated from each other and separated, the diameter of the cylinder of the main body portion tends to be small.

  On the other hand, according to the fixing member 1a for a cable connector according to the embodiment of the present invention, the engaging convex portions 12a are superimposed on the outer peripheral surface of the substantially cylindrical main body portion 11a. Are prevented or suppressed from separating in a way that conflicts. For this reason, even if it is a case where compressive force is added to the main-body part 11a from the outer peripheral side, it is prevented or suppressed that the diameter of the main-body part 11a becomes small.

  Thus, according to the fixing member 1a for a cable connector according to the embodiment of the present invention, even when an external force (particularly a compressive force from the outer peripheral side) is applied, deformation and dimensional change are prevented or suppressed, A cylindrical shape is maintained. And since the fixing member 1a for cable connectors concerning embodiment of this invention is a structure formed by bending a plate-shaped member, compared with the structure formed by cutting, punching, etc. , Manufacturing costs can be kept low.

  In addition, the shape and number of the engagement convex part 12a and the engagement recessed part 13a are not specifically limited. Therefore, a modification will be described next. FIG. 3 is an external perspective view showing a modification of the fixing member for the cable connector according to the embodiment of the present invention, and shows a state before being formed into a cylindrical shape.

  A fixing member 1b for a cable connector shown in FIG. 3A has a substantially oval engagement convex portion 12b. As shown in FIG. 3 (a), a plurality of engaging projections 12b are formed at predetermined intervals on two opposite sides (substantially two sides) of the four sides of the main body 11b. Is done. The engagement concave portion 13b is formed between the engagement convex portions 12b (that is, a portion where the engagement convex portion 12b is not formed).

  The cable connector fixing member 1c shown in FIG. 3 (b) has a substantially semicircular engaging projection 12c. As shown in FIG. 3B, a plurality of engaging convex portions 12c are formed at predetermined intervals on two opposing sides of the four sides of the main body portion 11c. An engagement recess 13c is formed between the engagement protrusions 12c.

  As described above, the shapes of the engaging convex portions 12a, 12b, and 12c are not limited, and various shapes can be applied. In short, when the main body parts 11a, 11b, 11c are bent and deformed, the sides where the engaging convex parts 12a, 12b, 12c and the engaging concave parts 13a, 13b, 13c are formed are brought into contact with each other. The engaging convex portions 12a, 12b, 12c engaged with the engaging concave portions 13a, 13b, 13c formed on the other side, and the engaged engaging convex portions 12a, 12b, 12c are the main body portion 11a, What is necessary is just to be a structure superimposed on the outer peripheral surface of 11b, 11c.

  In addition, in order to improve the coupling strength between the cable connector fixing members 1a, 1b, and 1c and the cable according to the embodiment of the present invention, the cable connector fixing members 1a, 1b, and 1c according to the embodiment of the present invention. A configuration in which serrations are formed on the surface of the substrate may be used.

  4 and 5 are diagrams schematically showing the configuration of the cable connector fixing members 1d and 1e on which serrations are formed on the surface. FIGS. 4A and 5A show a state before being formed into a cylindrical shape, and FIGS. 4B and 5B show a state where the tube is formed. 4 and 5 show a configuration in which a substantially quadrilateral engaging convex portion is formed, the shape of the engaging convex portion is not limited.

  On the surface of the main body portion 11d of the cable connector fixing member 1d shown in FIG. 4, a streak-like serration 14d extending in a direction substantially perpendicular to the axial direction of the main body portion 11d formed in a cylindrical shape is formed. This serration 14d is a convex structure, and is formed by pressing or the like before the main body portion 11d is formed into a cylindrical shape (that is, in the state shown in FIG. 4A). For example, when the fixing member 1d for a cable connector is punched from a metal plate material, a configuration in which the serration 14d is formed by pressing can be applied. As shown in FIG. 4B, the serration 14d has a configuration that protrudes to the outer peripheral side in a state where the main body portion 11d is formed in a cylindrical shape.

  A mesh-like serration 14e is formed on the surface of the main body 11e of the cable connector fixing member 1e shown in FIG. This serration 14e is a convex structure, and is formed by pressing or the like before the main body portion 11e is formed into a cylindrical shape (that is, in the state shown in FIG. 5A). As shown in FIG. 5B, the serration 14e has a configuration that protrudes to the outer peripheral side when the main body 11e is formed in a cylindrical shape.

  Thus, the serrations 14d and 14e for improving the fixing force with the cable are formed on the surfaces of the cable connector fixing members 1d and 1e according to the embodiment of the present invention. And if it is the structure which forms the cylindrical main-body parts 11d and 12e by bending a plate-shaped member, the serrations 14d and 14e can be easily formed in the surface of the main-body parts 11d and 11e. Even if the serrations 14d and 14e have complicated shapes, they can be easily formed.

  In addition, the structure of the serration formed in the surface of the fixing member for cable connectors concerning embodiment of this invention is not limited to the said structure. Various serrations can be applied as long as they can improve the fixing force with the cable. Moreover, in order to improve the fixing force with a cable, the structure which roughens the surface roughness of the outer surface of a main-body part and enlarges a friction coefficient may be sufficient.

  Next, a cable connector (hereinafter, referred to as a cable connector according to an embodiment of the present invention) to which the fixing members 1a, 1b, 1c, 1d, and 1e for the cable connector according to the embodiment of the present invention are applied, and the cable connector A cable to which is attached (that is, a cable with a cable connector) will be described. Hereinafter, a configuration in which a coaxial cable is applied as a cable and a configuration in which an optical fiber cable is applied will be described.

  First, a configuration in which a coaxial cable is applied as a cable will be described. A general coaxial cable 4 includes an inner conductor 41 that functions as a path for an electrical signal, an outer conductor 44 that functions as a shield conductor, an insulator 42 that is interposed between the inner conductor 41 and the outer conductor 44, and an outer conductor. And a covering material 45 covering 44. And the inner conductor 41, the insulator 42, the outer conductor 44, and the coating | covering material 45 are arrange | positioned substantially coaxially. The outer conductor 44 covers the periphery of the inner conductor 41 without a gap, so that the inner conductor 41 is electromagnetically shielded by the outer conductor 44. One or more conductive wires are applied to the inner conductor 41. As the outer conductor 44, a braided wire in which a plurality of conductive wires are knitted in a net shape is applied. A synthetic resin or the like is applied to the insulator 42 and the covering material 45.

  As shown in FIG. 6, a cable connector 5 according to an embodiment of the present invention includes an inner conductor terminal 52, an outer conductor terminal 54, a dielectric 53, and a fixing member 1 for a cable connector according to an embodiment of the present invention. (That is, one of the fixing members 1a, 1b, 1c, 1d, and 1e for the cable connector). For convenience of explanation, the side connected to the counterpart connector is referred to as the cable connector 5 according to the embodiment of the present invention and the front end side of each member, and the opposite side is referred to as the rear end side. In FIG. 6, the lower left side is the front end side, and the upper right side is the rear end side.

  The inner conductor terminal 52 has a main body portion 521 for connecting to the inner conductor terminal of the counterpart connector and a crimping portion 522 for connecting to the inner conductor 41 of the coaxial cable 4. The shape of the main body 521 is set according to the shape of the inner conductor terminal of the counterpart connector. For example, it is formed in a substantially rod shape or a substantially cylindrical shape with an open end surface. FIG. 6 shows a configuration in which the main body 521 is formed in a substantially cylindrical shape. The crimping part 522 is provided with a crimping piece for crimping the inner conductor 41 of the coaxial cable 4. The crimping piece is a tongue-like part, and is formed so that a pair of crimping pieces are substantially opposed to each other. For this reason, the crimping | compression-bonding part 522 is formed in a cross-sectional substantially U shape. The inner conductor terminal 52 is made of a metal plate or the like, and is formed into a shape as shown in FIG. 6 by pressing or the like.

  The outer conductor terminal 54 includes a main body portion 541 that can accommodate the inner conductor terminal 52 and the dielectric 53, and a crimping portion 542 for connecting to the outer conductor 44 of the coaxial cable 4. The main body 541 is formed in a substantially cylindrical shape having a hollow inside. For example, as shown in FIG. 6, it is formed in a substantially cylindrical shape. The crimping portion 542 is provided with a crimping piece for crimping the outer conductor 44 of the coaxial cable 4. The crimping piece is a portion extending in the shape of a tongue piece, and is formed so that a pair of crimping pieces substantially oppose each other. For this reason, the crimping | compression-bonding part 542 is formed in a cross-sectional substantially U shape. The outer conductor terminal 54 is made of a metal plate or the like, and is formed into a shape as shown in FIG. 6 by pressing or the like.

  The dielectric 53 is a member having a function of holding the inner conductor terminal 52 in a state of being electrically insulated from the outer conductor terminal 54. An opening that can accommodate the inner conductor terminal 52 is formed inside the dielectric 53. In addition, the outer dimensions of the dielectric 53 are set so as to be housed inside the main body 541 of the outer conductor terminal 54. For this reason, this dielectric 53 has a substantially cylindrical shape as a whole. The dielectric 53 is formed of a material having a predetermined dielectric constant (for example, a synthetic resin material).

  FIG. 7 is a diagram schematically showing a cross-sectional structure of a cable with a cable connector to which the cable connector 5 according to the embodiment of the present invention is attached. As shown in FIG. 7, the insulator 42 is peeled off at the tip of the coaxial cable 4, and the internal conductor 41 is exposed. The crimp portion 522 of the inner conductor terminal 52 is crimped to the exposed inner conductor 41. Further, the covering material 45 is peeled off at the front end portion of the coaxial cable 4, and the external conductor 44 is exposed. The exposed outer conductor 44 is folded back to the rear end side. The cable connector fixing member 1 according to the embodiment of the present invention is disposed inside the folded outer conductor 44 (that is, between the outer conductor 44 and the covering material 45). Then, the crimping piece of the crimping portion 542 of the outer conductor terminal 54 is crimped to the outer peripheral surface of the folded outer conductor 44. For this reason, the folded-back outer conductor 44 is sandwiched and held by the cable connector fixing member 1 and the crimping portion 542 of the outer conductor terminal 54 according to the embodiment of the present invention. The dielectric 53 is accommodated in the main body 541 of the outer conductor terminal 54, and the inner conductor terminal 52 is accommodated in the opening inside the dielectric 53. For this reason, the inner conductor terminal 52 is held inside the main body portion 541 of the outer conductor terminal 54 while being electrically insulated from the outer conductor terminal 54 by the dielectric 53.

  The procedure for assembling the cable connector 5 according to the embodiment of the present invention to the coaxial cable 4 is as follows. FIG. 8 is a plan view schematically showing each step of assembling the cable connector 5 according to the embodiment of the present invention to the coaxial cable 4.

  As shown in FIG. 8A, first, the cable connector fixing member 1 according to the embodiment of the present invention is attached to the end portion of the coaxial cable 4. That is, the distal end portion of the coaxial cable 4 is inserted through the fixing member 1 for a cable connector according to the embodiment of the present invention and penetrated, and the distal end portion of the coaxial cable 4 is fixed for the cable connector according to the embodiment of the present invention. 1 to expose. Next, as shown in FIG. 8B, the covering material 45 at the end of the coaxial cable 4 is peeled off. Thereby, the outer conductor 44 and the insulator 42 of the coaxial cable 4 are exposed. Next, as shown in FIG. 8C, the exposed outer conductor 44 is folded back to the rear end side, and the folded outer conductor 44 is formed on the outer peripheral surface of the cable connector fixing member 1 according to the embodiment of the present invention. Superposed.

  Next, as shown in FIG. 8D, the exposed insulator 42 is peeled off. As a result, the inner conductor 41 is exposed. Next, as shown in FIG. 8E, the inner conductor terminal 52 is attached to the exposed inner conductor 41. Specifically, the inner conductor 41 of the coaxial cable 4 is crimped by crimping a crimping piece provided in the crimping portion 522 of the inner conductor terminal 52 (= by plastic deformation). Next, as shown in FIG. 8 (f), the outer conductor terminal 54 is attached to the folded outer conductor 44 in a state where the dielectric 53 is housed inside the main body 541 of the outer conductor terminal 54. Specifically, the outer conductor 44 of the coaxial cable 4 is crimped to the crimping portion 542 of the outer conductor terminal 54 by caulking a crimping piece provided on the crimping portion 542 of the outer conductor terminal 54.

  Through such steps, a cable with a cable connector to which the cable connector 5 according to the embodiment of the present invention is attached is obtained.

  According to such a configuration, when the crimping piece of the crimping portion 542 of the outer conductor terminal 54 is crimped to the outer conductor 44 of the coaxial cable 4, the cable connector fixing member 1 according to the embodiment of the present invention is also viewed from the outer peripheral side. Although a compressive force is applied, since the joint portion 15a is prevented or suppressed as described above, the cable connector fixing member 1 according to the embodiment of the present invention is prevented from being deformed. For this reason, the outer conductor 44 of the coaxial cable 4 can be firmly held between the crimping portion 542 of the outer conductor terminal 54 and the cable connector fixing member 1 according to the embodiment of the present invention. Therefore, the coupling strength between the cable connector 5 and the coaxial cable 4 according to the embodiment of the present invention can be improved. As described above, when a cable with a cable connector 5 to which the cable connector 5 according to the embodiment of the present invention is attached is routed, a tensile force is applied to the cable connector 5 according to the embodiment of the present invention. In addition, the cable connector 5 according to the embodiment of the present invention is prevented or suppressed from falling off from the terminal portion of the coaxial cable 4.

  Moreover, since the deformation | transformation of the fixing member 1 for cable connectors concerning embodiment of this invention is prevented or suppressed, it can prevent or suppress that the insulator 42 and the internal conductor 41 of the coaxial cable 4 deform | transform. For this reason, it is possible to prevent the internal conductor 41 of the coaxial cable 4 from being damaged.

  Further, when the serration or the like is formed in the main body portion of the cable connector fixing member 1 according to the embodiment of the present invention, the force for holding and holding the outer conductor 44 of the coaxial cable 4 can be improved. it can. Therefore, the coupling strength between the coaxial cable 4 and the cable connector 5 can be improved.

  In the embodiment, the outer conductor 44 of the coaxial cable 4 is folded back, and the cable connector fixing member 1 according to the embodiment of the present invention is disposed inside the folded outer conductor 44. However, a configuration in which the outer conductor 44 is not folded back may be employed. In this case, the covering material 45 at the end of the coaxial cable 4 is peeled off to expose the outer conductor 44. Then, the cable connector fixing member 1 according to the embodiment of the present invention is inserted between the exposed outer conductor 44 and the insulator 42. Then, the crimping piece of the crimping portion 542 of the outer conductor terminal 54 is crimped from the exposed outer peripheral surface side of the outer conductor 44. As a result, the outer conductor 44 of the coaxial cable 4 is pinched and held by the cable connector fixing member 1 and the crimping portion 542 of the outer conductor terminal 54 according to the embodiment of the present invention. Even if it is such a structure, there can exist an effect similar to the above-mentioned.

  Next, a configuration in which an optical fiber connector is applied as the cable connector and an optical fiber cable is applied as the cable will be described.

  FIG. 9 is a cross-sectional view schematically showing a cross-sectional structure of optical fiber cables 2a, 2b, and 2c that can be suitably applied to the optical fiber connector according to the embodiment of the present invention. In the following description, an optical fiber cable that can be suitably applied to an optical fiber connector according to an embodiment of the present invention may be simply referred to as an “optical fiber cable”.

  As shown in FIG. 9, the optical fiber cables 2 a, 2 b, 2 c have an optical fiber strand 21, tension members 22 a, 22 b, 22 c, and a sheath material 23.

  The optical fiber strand 21 is a member capable of transmitting an optical signal, and various known optical fiber strands can be applied. Therefore, detailed description is omitted. For example, a glass-based material or a synthetic resin-based material can be applied. Each optical fiber cable 2 a, 2 b, 2 c shown in FIG. 9 is a two-core type, and has two optical fiber strands 21. One of the two optical fiber strands 21 functions as the transmission optical fiber strand 21, and the other one functions as the reception optical fiber strand 21. The optical fiber strands 21 of the optical fiber cables 2a, 2b, 2c are preferably colored on the surface with a colorant or the like. According to such a configuration, the optical fiber 21 that functions as a transmitter and the optical fiber 21 that functions as a receiver can be visually identified.

  The tension members 22a, 22b, and 22c are members having functions such as reinforcing the optical fiber strand 21. Various known tension members can be applied to the tension members 22a, 22b, and 22c of the optical fiber cables 2a, 2b, and 2c. Therefore, detailed description is omitted. For example, a bundle of fibers made of Kevlar (registered trademark) resin or a bundle of fine wires such as steel can be applied.

  The sheath material 23 is a member that unifies the optical fiber strand 21 and the tension members 22a, 22b, and 22c and covers the optical fiber strand 21 and the tension members 22a, 22b, and 22c. The sheath material 23 is formed of a material that can be easily bent and deformed. As the material of the sheath material 23, the same material as various known sheath materials can be applied. Specifically, for example, materials such as polyvinyl chloride, polyethylene, and non-halogen flame-retardant polyethylene can be applied.

  Then, tension members 22a, 22b, and 22c are disposed so as to surround the optical fiber strand 21, and the optical fiber strand 21 and the tension members 22a, 22b, and 22c are integrated by the sheath material 23.

  The specific configuration of each optical fiber cable 2a, 2b, 2c is as follows.

  The optical fiber cable 2a shown in FIG. 9A has four tension members 22a. These tension members 22a are formed in a string shape or a rod shape. And these four tension members 22a are arrange | positioned so that the two optical fiber strands 21 may be enclosed. That is, the tension member 22a is disposed around the optical fiber 21 in a circumferential shape or a polygonal shape (in the case of four, a quadrangular shape). The number of tension members 22a is not limited to four. In short, any configuration may be used as long as the plurality of tension members 22a are disposed so as to surround the periphery of the optical fiber 21.

  The tension member 22b of the optical fiber cable 2b shown in FIG. 9B is formed in a substantially tube shape. An optical fiber 21 is disposed inside the tension member 22b. The sheath member 23 is filled in the tension member 22b. A layer of the sheath material 23 is also formed on the outer periphery of the tension member 22b. Thus, the sheath material 23 and the tension member 22b are formed substantially concentrically.

  The tension member 22c of the optical fiber cable 2c shown in FIG. 9C is formed in a substantially rod shape or a string shape having a predetermined cross-sectional shape. FIG. 9C shows a configuration in which the cross section of the tension member 22c is formed in a substantially elliptical shape. And the optical fiber strand 21 is embed | buried under the tension member 22c. The tension member 22c is covered with a sheath material 23. Therefore, the optical fiber cable 2 c has a configuration in which the tension member 22 c is disposed at the approximate center of the cross section of the sheath material 23 as a whole.

  Each optical fiber cable 2a, 2b, 2c shown in FIG. 9 has two optical fiber strands 21 (one transmission optical fiber strand 21 and one reception optical fiber strand 21). However, the number of the optical fiber strands 21 included in these optical fiber cables 2a, 2b, 2c is not limited. That is, the optical fiber cables 2a, 2b, and 2c may have a configuration having one optical fiber strand 21 or a configuration having three or more optical fiber strands 21. Each optical fiber cable 2a, 2b, 2c shown in FIG. 9 has a configuration in which two optical fiber strands 21 are arranged apart from each other, but the optical fiber strands 21 need to be separated from each other. For example, it may be configured to be in contact (or densely).

  The point is that the tension members 22a, 22b, and 22c may be arranged so as to surround one or more optical fiber strands 21.

  FIG. 10 is an exploded perspective view schematically showing the configuration of the optical fiber connector 3 according to the embodiment of the present invention. As shown in FIG. 10, an optical fiber connector 3 according to an embodiment of the present invention includes a cable connector fixing member 1 according to an embodiment of the present invention (the cable connector fixing members 1a, 1b, 1c, 1d, 1e), a crimping member 32, a ferrule 34, and a connector housing 35. For convenience of explanation, the side connected to the counterpart connector is referred to as the front end side of the optical fiber connector 3 and each member according to the embodiment of the present invention, and the opposite side is referred to as the rear end side. In FIG. 10, the lower left side is the front end side, and the upper right side is the rear end side.

  The crimping member 32 is a member formed in a substantially annular shape or a substantially cylindrical shape. The crimping member 32 is preferably formed of a high-strength material (a material that is difficult to deform). For example, it is preferably formed of a metal or the like. The inner diameter of the crimping member 32 is formed to be larger than the outer dimension (outer diameter) of the cable connector fixing member 1 according to the embodiment of the present invention. That is, the crimping member 32 is formed in a dimension and shape that allows the cable connector fixing member 1 according to the embodiment of the present invention to be loosely inserted therein.

  The ferrule 34 is a member that holds the optical fiber 21. Then, the end face 342 of the ferrule 34 is abutted against the end face of the ferrule of the counterpart optical fiber connector, thereby connecting the optical fiber strands 21 so that an optical signal can be transmitted. For this reason, the ferrule 34 is preferably formed of a material having high hardness and capable of maintaining dimensional accuracy. For example, a material having increased hardness by incorporating glass into PBT (polybutylene terephthalate), PPT (polypropylene terephthalate), or PPS (polyphenylene sulfide) can be suitably applied.

  The ferrule 34 shown in FIG. 10 has a configuration formed in a substantially rectangular parallelepiped. Of these, the surface on the tip side is a surface that abuts against the ferrule of the counterpart optical fiber connector (hereinafter referred to as “abutting surface 342”). The ferrule 34 is formed with an optical fiber strand insertion hole 341 through which the optical fiber strand 21 included in the optical fiber cables 2a, 2b, 2c can be inserted. The number of optical fiber strand insertion holes 341 is equal to the number of optical fiber strands 21 to be connected. The embodiment of the present invention has a configuration in which two optical fiber strand insertion holes 341 are formed. These optical fiber strand insertion holes 341 are formed so as to penetrate the ferrule 34 from the rear end surface (hidden in FIG. 10 and not visible) to the butting surface 342.

  An adhesive injection hole 343 is formed on the outer peripheral surface (so-called side surface) of the ferrule 34. The adhesive injection hole 343 communicates with the optical fiber strand insertion hole 341 inside the ferrule 34. After the optical fiber strand 21 is inserted into the optical fiber strand insertion hole 341, the optical fiber strand 21 is fixed to the ferrule 34 by injecting an adhesive from the adhesive injection hole 343.

  On the butting surface 342 of the ferrule 34, a positioning pin 344 is provided and a positioning hole 345 is formed. The positioning pin 344 is preferably formed by a member different from the main body of the ferrule 34. For example, a configuration in which a hole is formed in the abutting surface 342 of the ferrule 34 and the proximal end portion of the positioning pin 344 is inserted into this hole can be suitably applied. When the abutment surface 342 of the ferrule 34 is abutted against the abutment surface of the ferrule of the counterpart optical fiber connector, the positioning pin 344 of the ferrule 34 is engaged with the positioning hole of the ferrule of the counterpart optical fiber connector, The positioning pin of the ferrule of the optical fiber connector engages with the positioning hole 345 of the ferrule 34.

  When the ferrules of two optical cable connectors that are connected to each other face each other, an optical fiber strand insertion hole formed in the ferrule of one optical cable connector (here, an optical fiber that can accommodate an optical fiber strand that functions as a transmitter) The optical fiber strand insertion hole (here, the optical fiber strand insertion hole that can accommodate the optical fiber strand functioning for reception) communicates with the ferrule of the other optical cable connector (the strand insertion hole). = Axis line approximately matches). Also, an optical fiber strand insertion hole formed in the ferrule of the other optical cable connector (here, an optical fiber strand insertion hole capable of accommodating an optical fiber strand functioning for transmission), and one optical cable connector The ferrule optical fiber strand insertion hole (here, an optical fiber strand insertion hole capable of accommodating an optical fiber strand functioning for reception) communicates (= the axes substantially coincide).

  A locking projection 346 for locking the ferrule 34 to the connector housing 35 is formed on the rear end side of the ferrule 34. FIG. 10 shows a configuration in which a hook-shaped locking projection 346 is formed. The locking protrusion 346 is a portion locked by a locking piece 353 of the connector housing 35 described later. The locking protrusion 346 may be configured to be locked by the locking piece 353 of the connector housing 35, and the shape or the like is not limited.

  The connector housing 35 is a member formed integrally or substantially integrally with a resin material or the like. FIG. 11 is a cross-sectional view schematically showing the internal structure of the connector housing 35.

  Inside the connector housing 35, a ferrule housing part 351 and an optical fiber cable housing part 352 are formed. The ferrule housing portion 351 is an opening capable of housing the ferrule 34 and opens toward the distal end side of the connector housing 35 (the side that abuts against the other optical fiber connector). The optical fiber cable housing portion 352 is an opening capable of housing the optical fiber cables 2 a, 2 b, and 2 c and opens toward the rear end side of the connector housing 35. The ferrule housing part 351 and the optical fiber cable housing part 352 communicate with each other inside the connector housing 35.

  Further, a locking piece 353 capable of locking the locking protrusion 346 of the ferrule 34 is formed on the side portion of the ferrule housing portion 351. As shown in FIG. 11, the locking piece 353 is a tongue-like portion extending from the front end side to the rear end side of the connector housing 35. The front end side (the rear end side with respect to the connector housing 35) is configured to be elastically deformable toward the outside of the connector housing 35.

  The inner diameter of the optical fiber cable housing portion 352 is set to a dimension in which the optical fiber cables 2a, 2b, 2c and the crimping member 32 can be inserted. A locking projection 354 capable of locking the crimping member 32 is formed on the inner peripheral surface of the optical fiber cable housing portion 352. The locking projection 354 has a configuration protruding from the inner peripheral surface of the optical fiber cable housing portion 352 toward the center. The locking protrusion 354 can lock the crimping member 32 inserted into the optical fiber cable housing 352. That is, the crimping member 32 inserted into the optical fiber cable housing portion 352 from the distal end side (the side where the ferrule housing portion 351 is formed) of the connector housing 35 is formed on the inner peripheral surface of the optical fiber cable housing portion 352. By engaging with the stop protrusion 354, it cannot pass to the rear end side of the connector housing 35.

  In addition, the structure of this latching protrusion 354 is not limited to the structure shown by FIG. The point is that the optical fiber cables 2a, 2b and 2c can pass but the crimping member 32 can pass. Therefore, for example, the structure that the internal diameter of the optical fiber cable accommodating part 352 is locally small may be sufficient.

  The assembling structure of the optical fiber connector 3 having such a member and the procedure for assembling it to the optical fiber cables 2a, 2b, 2c are as follows. FIG. 12A is a cross-sectional view schematically showing a state in which the cable connector fixing member 1 according to the embodiment of the present invention is attached to the distal ends of the optical fiber cables 2a, 2b, and 2c. FIG. 12B is a cross-sectional view schematically showing a state where the crimping member 32 is further attached. FIG. 13 is a cross-sectional view schematically showing a state where the optical fiber connector 3 is assembled to the optical fiber cables 2a, 2b, 2c.

  First, the connector housing 35 is inserted through the tip portions of the optical fiber cables 2a, 2b, 2c in advance (not shown). That is, the distal end portions of the optical fiber cables 2 a, 2 b, 2 c are inserted into the optical fiber cable housing portion 352 and the ferrule housing portion 351 from the rear end side of the connector housing 35 to pass therethrough. Then, the distal end portions of the optical fiber cables 2 a, 2 b, 2 c are projected from the distal end side of the connector housing 35.

  Next, the fixing member 1 for a cable connector according to the embodiment of the present invention is attached to the distal end portions of the optical fiber cables 2a, 2b, 2c projected from the connector housing 35. Then, the sheath material 23 at the tip of the optical fiber cables 2a, 2b, and 2c is peeled off to expose the tension members 22a, 22b, and 22c, and the optical fiber strand 21 is protruded from the sheath material 23.

  Next, as shown in FIG. 12A, the exposed tension members 22a, 22b, and 22c are folded back toward the rear ends of the optical fiber cables 2a, 2b, and 2c. The folded tension members 22a, 22b, and 22c are arranged so as to overlap the outer periphery of the cable connector fixing member 1 according to the embodiment of the present invention. And the crimping | compression-bonding member 32 is arrange | positioned on the outer side of the folded tension members 22a, 22b, and 22c. Next, as shown in FIG. 12B, the disposed crimping member 32 is crimped to the outer peripheral surface of the cable connector fixing member 1 according to the embodiment of the present invention. That is, a compressive force is applied to the crimping member 32 from the outer peripheral side toward the center, and the crimping member 32 is deformed so that the inner diameter of the crimping member 32 decreases. As a result, the folded tension members 22a, 22b, and 22c are held by pressure between the cable connector fixing member 1 and the crimping member 32 according to the embodiment of the present invention.

  When the crimping member 32 is crimped to the outer periphery of the cable connector fixing member 1 according to the embodiment of the present invention, a force that compresses the cable connector fixing member 1 according to the embodiment of the present invention from the outer peripheral side. Will be added. However, the engaging convex portions 12a, 12b, and 12c are engaged with the engaging concave portions 13a, 13b, and 13c, and the engaging convex portions 12a, 12b, and 12c are superimposed on the outer peripheral side of the main body portions 11a, 11b, and 11c. Therefore, the joint 15a is prevented from being detached and deformed. For this reason, the tension members 22a, 22b, and 22c of the optical fiber cables 2a, 2b, and 2c are firmly held between the cable connector fixing member 1 and the crimping member 32 according to the embodiment of the present invention. . And since the crimping | compression-bonding member 32 is firmly fixed to the fixing member 1 for cable connectors concerning embodiment of this invention, it prevents that the crimping | compression-bonding member 32 pulls out from the front-end | tip part of optical fiber cable 2a, 2b, 2c. Is done.

  Furthermore, since the deformation | transformation of the fixing member 1 for cable connectors concerning embodiment of this invention is prevented, it can prevent that the sheath material 23 of optical fiber cable 2a, 2b, 2c deform | transforms. For this reason, it can prevent that the optical fiber strand 21 is damaged.

  The optical fiber 21 protruding from the end of the sheath material 23 is inserted into the optical fiber insertion hole 341 from the rear end side of the ferrule 34. The inserted optical fiber 21 protrudes from the abutment surface 342 of the ferrule 34. In this state, the adhesive is injected into the adhesive injection hole 343 of the ferrule 34. As a result, the optical fiber 21 is bonded and fixed to the ferrule 34. Thereafter, the optical fiber 21 protruding from the abutting surface 342 of the ferrule 34 (that is, a surplus portion of the optical fiber 21) is cut, and the abutting surface 342 of the ferrule 34 is subjected to polishing or the like. Thereby, the abutting surface 342 of the ferrule 34 and the end surface of the optical fiber 21 are mirror finished. Thereafter, the positioning pin 344 is erected at a predetermined position on the abutting surface 342 of the ferrule 34.

  FIG. 13 is a cross-sectional view schematically showing a state in which the optical fiber connector 3 is attached to the optical fiber cables 2a, 2b, and 2c. Next, the connector housing 35 inserted in advance into the optical fiber cables 2a, 2b, 2c is moved to the tip side of the optical fiber cables 2a, 2b, 2c. As a result, the ferrule 34 is accommodated in the ferrule accommodating portion 351 of the connector housing 35. Further, the tip ends of the optical fiber cables 2 a, 2 b, 2 c are accommodated in the optical fiber cable accommodation portion 352 of the connector housing 35. When the ferrule 34 is stored in the ferrule housing portion 351 of the connector housing 35, the locking protrusion 346 of the ferrule 34 is locked by the locking piece 353 of the connector housing 35. Thereby, the ferrule 34 is held so as not to be easily detached from the connector housing 35.

  According to such a configuration, when a tensile force is applied between the connector housing 35 and the optical fiber cables 2a, 2b, 2c (that is, the optical fiber cables 2a, 2b, 2c in FIG. When the force is applied), the optical fiber cables 2 a, 2 b, 2 c are removed from the connector housing 35 by the crimping member 32 engaging with the engaging protrusion 354 of the optical fiber cable housing portion 352 of the connector housing 35. Is prevented. In particular, as described above, since the crimping member 32 is firmly fixed to the cable connector fixing member 1 according to the embodiment of the present invention, the crimping member 32 can be prevented from being pulled out, and as a result, the optical fiber. The connector 3 is prevented from being pulled out from the tip end portions of the optical fiber cables 2a, 2b, 2c.

  Further, since the crimping member 32 is directly coupled to the tension members 22a, 22b, and 22c of the optical fiber cables 2a, 2b, and 2c, a tensile force applied to the optical fiber cables 2a, 2b, and 2c (arrow a in FIG. 13). The tension members 22a, 22b and 22c directly bear the force of the direction of For this reason, the coupling strength between the optical fiber cables 2a, 2b, and 2c and the connector housing 35 can be improved as compared with the conventional configuration in which the sheath material 23 bears the tensile force. Therefore, even when an external force is applied during the routing operation or when vibration is applied during use, it is possible to prevent or suppress the occurrence of disconnection or displacement of the optical fiber cables 2a, 2b, 2c.

  Further, when the serration or the like is formed in the main body of the cable connector fixing member 1 according to the embodiment of the present invention, the tension members 22a, 22b, and 22c of the optical fiber cables 2a, 2b, and 2c are clamped. The holding force can be improved. Therefore, it is possible to prevent or suppress the disconnection or misalignment of the optical fiber cables 2a, 2b, 2c.

  Moreover, since the external force applied to the optical fiber connector 3 and the optical fiber cables 2a, 2b, and 2c is borne by the tension members 22a, 22b, and 22c, it is possible to prevent a tensile force and the like from being applied to the optical fiber strand 21. It is possible to prevent the strand 21 from being damaged.

  As mentioned above, although various embodiment of this invention was described in detail, this invention is not limited to each said embodiment at all, and various modification | change is possible in the range which does not deviate from the meaning of this invention. For example, in the above-described embodiment, the cable connector applied to the coaxial cable and the optical fiber connector applied to the optical fiber cable have been described, but the present invention can also be applied to cable connectors of other various cables.

DESCRIPTION OF SYMBOLS 1a, 1b, 1c, 1d, 1e Fixing member 11a, 11b, 11c, 11d, 11e for cable connectors concerning embodiment of this invention Main-body part 12a, 12b, 12c Engagement convex part 13a, 13b, 13c Engagement recessed part 2a, 2b, 2c Optical fiber cable 21 Optical fiber strand 22a, 22b, 22c Tension member 23 Sheath material 3 Optical fiber connector 32 Crimp member 34 Ferrule 341 Optical fiber strand insertion hole 342 Butting surface 343 Adhesive injection hole 344 Positioning pin 345 Positioning hole 346 Locking protrusion 35 Connector housing 351 Ferrule housing part 352 Optical fiber cable housing part 353 Locking piece 354 Locking protrusion 4 Coaxial cable 41 Internal conductor 42 Insulator 44 External conductor 45 Covering material 5 Cable connector 52 Inner conductor end 521 body portion 522 crimped portion 53 dielectric 54 outer conductor terminal 541 body portion 542 crimped portion

Claims (8)

A fixing member for a cable connector formed in a substantially cylindrical shape,
Engagement formed on one side of the two sides, having two sides formed with an engagement convex part and an engagement concave part, and formed into a substantially cylindrical shape by abutting the two sides A fixing member for a cable connector, wherein the convex portion engages with an engaging concave portion formed on the other side, and the engaging convex portion overlaps with an outer peripheral surface of a portion formed in a substantially cylindrical shape. .   The fixing member for a cable connector according to claim 1, wherein serrations are formed on a surface of the substantially cylindrical portion. A cable connector attached to a terminal portion of a shielded cable comprising an inner conductor, an outer conductor covering the inner conductor, and a covering material covering the outer conductor,
A fixing member for a cable connector according to claim 1 or 2,
An outer conductor terminal provided with a crimping piece for crimping the outer conductor of the shielded cable;
Have
In the end portion of the shielded cable, the tip of the outer conductor protrudes from the tip of the covering material, the fixing member for the cable connector is disposed inside the protruding covering material, and the outer conductor terminal The crimping piece to be provided is crimped to the outside of the outer conductor protruding from the tip of the covering material, whereby the outer conductor protruding from the tip of the covering material is provided on the fixing member for the cable connector and the outer conductor terminal. A cable connector characterized by being sandwiched between a crimping piece. The outer conductor protruding from the front end of the covering material is folded back to the rear end side of the covering material,
The fixing member for the cable connector is disposed between the outer side of the covering material and the inner side of the outer conductor that is folded back and protrudes from the covering material, and a crimping piece provided on the outer conductor terminal protrudes from the covering material. By crimping the outer conductor that has been folded back, the outer conductor that has been folded back and projected from the covering material is sandwiched between the fixing member for the cable connector and the crimp piece provided on the outer conductor terminal. The cable connector according to claim 3. A shielded cable comprising an inner conductor, an outer conductor covering the inner conductor, and a covering material covering the outer conductor;
A fixing member for a cable connector according to claim 1 or 2,
An outer conductor terminal provided with a crimping piece for crimping the outer conductor of the shielded cable;
Have
In the end portion of the shielded cable, the tip of the outer conductor protrudes from the tip of the covering material, the fixing member for the cable connector is disposed inside the protruding covering material, and the outer conductor terminal The crimping piece to be provided is crimped to the outside of the outer conductor protruding from the tip of the covering material, whereby the outer conductor protruding from the tip of the covering material is provided on the fixing member for the cable connector and the outer conductor terminal. A cable with a cable connector, which is sandwiched between a crimping piece. The outer conductor protruding from the front end of the covering material is folded back to the rear end side of the covering material,
The fixing member for the cable connector is disposed between the outer side of the covering material and the inner side of the outer conductor that is folded back and protrudes from the covering material, and a crimping piece provided on the outer conductor terminal protrudes from the covering material. By crimping the outer conductor that has been folded back, the outer conductor that has been folded back and projected from the covering material is sandwiched between the fixing member for the cable connector and the crimp piece provided on the outer conductor terminal. The cable with a cable connector according to claim 5. An optical cable connector that has an optical fiber and a tension member that reinforces the optical fiber, and is attached to a terminal portion of an optical fiber cable in which the optical fiber and the tension member are integrated by a sheath material. And
A fixing member for a cable connector according to claim 1 or 2,
A crimping member formed in a substantially annular shape;
With
The tip of the tension member protrudes from the tip of the sheath material at the tip of the optical fiber cable, the tip of the protruding tension member is folded back to the rear end side of the optical fiber cable, and the fixing member for the cable connector is The crimp member is disposed inside the folded tension member, the crimp member is disposed outside the folded tension member, and the folded tension member includes the cable connector fixing member and the crimp member. An optical cable connector that is sandwiched between the two. An optical fiber cable having an optical fiber and a tension member that reinforces the optical fiber, and the optical fiber and the tension member are integrated by a sheath material;
A fixing member for a cable connector according to claim 1 or 2,
A crimping member formed in a substantially annular shape;
With
The front end of the optical fiber cable has the front end of the tension member protruding from the front end of the sheath material, the front end of the protruding tension member is folded back to the rear end side of the optical fiber cable, and the first support member is folded back. The second support member is disposed outside the folded tension member, and the folded tension member is connected to the cable connector fixing member and the cable connector. A cable with a cable connector, which is sandwiched between a crimping member.

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