WO2012093665A1

WO2012093665A1 - Cable assembly

Info

Publication number: WO2012093665A1
Application number: PCT/JP2012/050005
Authority: WO
Inventors: 小島　茂
Original assignee: 株式会社フジクラ
Priority date: 2011-01-06
Filing date: 2012-01-04
Publication date: 2012-07-12
Also published as: JPWO2012093665A1

Abstract

The purpose of the present invention is to provide a cable assembly (1) capable of readily mounting a connector (20) to a substrate, etc. The cable assembly (1) comprises: a plurality of cables (10) having center conductors (11); a connector (20) having a plurality of terminals (22) connected to one end of each cable (10) center conductor (11); and a fixing member (30) fixed to the connector (20) and covering at least one section of each cable (10). The fixing member (30) is characterized by covering the cables (10) such that the cables (10) form a prescribed shape.

Description

Cable assembly

The present invention relates to a cable assembly, and more particularly to a cable assembly that can be easily mounted on a substrate or the like.

When connecting internal boards of small electronic devices typified by mobile phones, a cable assembly is used in which a plurality of ultra-fine coaxial cables are bundled and the ends of each coaxial cable are connected to a pair of connectors. (For example, Patent Document 1 below). Such a cable assembly is usually mounted on a board by an operator holding the connector of the cable assembly and inserting the connector into a socket or the like provided on the board.

Japanese Patent Laid-Open No. 08-0249931

However, due to further downsizing of electronic devices in recent years, the size of the connector is reduced, and it may be difficult for an operator to hold the connector and insert it into a socket on the board. Therefore, there is a need for a cable assembly that can be easily mounted on a board even when the connector is downsized.

Therefore, an object of the present invention is to provide a cable assembly that can be easily mounted on a substrate.

The cable assembly according to the present invention includes a plurality of cables having conductors, a connector having a plurality of terminals connected to one end of the conductor of each cable, and fixed to the connector, and at least each of the cables A fixing member covering a part of the cable, wherein the fixing member covers the cable so that the cable has a predetermined shape.

According to the cable assembly of the present invention, even if the cable covered with the fixing member is gripped and the connector is inserted into a socket or the like provided on the board, the fixing member fixes the connector and the cable. The cable can be prevented from being bent at the boundary between the connector and the cable, and the connector can be easily inserted into a socket or the like. Therefore, even when the connector of the cable assembly is small and it is difficult to hold the connector, the cable assembly can be easily attached to the board or the like.

In the cable assembly, it is preferable that the predetermined shape is a shape bent substantially vertically.

According to such a cable assembly, even when parts are arranged in the extending direction of the cable led out from the connector, the cable is bent substantially vertically. Can be mounted on the substrate.

In the cable assembly, it is preferable that the connector has a frame body that houses one end of the cable, and the fixing member is fixed to the connector on the outside and the inside of the frame body.

According to such a cable assembly, the fixing member can be more firmly fixed to the connector.

In each of the cable assemblies, each of the cables has an insulating layer covering the conductor, the conductor of the cable is fixed to the terminal of the connector by solder, and the solder is connected to the conductor and the conductor. It is preferable that a part of a space between the insulating layer is filled, and the fixing member covers at least a part of a part of the cable filled with the solder.

According to such a cable assembly, the portion filled with the solder in the space between the cable conductor and the insulating layer is hardened by the solder, so that the strength against the bending force is improved. In addition, since the portion of the cable filled with solder is fixed by the fixing member, the portion where the cable is easily bent can be reduced, and the cable is further resistant to bending. Therefore, it is possible to more easily attach the connector to the board or the like by grasping the portion covered with the fixing member.

In the cable assembly, it is preferable that the fixing member is made of a resin provided by insert molding.

In such a cable assembly, the fixing member can be easily provided by insert molding.

As described above, according to the present invention, a cable assembly capable of easily attaching a connector to a substrate or the like is provided.

It is a figure which shows the cable assembly which concerns on embodiment of this invention. It is a figure which shows the end of the cable of FIG. It is an enlarged view of the connector of FIG. It is sectional drawing along the longitudinal direction of the cable in the connector of FIG. FIG. 5 is a cross-sectional view showing the state of the connector structure on a plane passing through the line VV in FIG. It is an enlarged view of the area | region containing the insulating layer of FIG. 5, an external conductor, and a jacket.

Hereinafter, preferred embodiments of a cable assembly according to the present invention will be described in detail with reference to the drawings.

FIG. 1 is a view showing a cable assembly according to an embodiment of the present invention.

As shown in FIG. 1, the cable assembly 1 includes a plurality of cables 10, a pair of connectors 20 connected to both ends of each cable 10, and fixed to each connector 20. And a fixing member 30 covering the portion as a main configuration.

FIG. 2 is a view showing one end of the cable 10 of FIG. As shown in FIG. 2, the cable 10 in the present embodiment is a coaxial cable, and includes a central conductor 11, an insulating layer 12 that covers the outer peripheral surface of the central conductor 11, and an outer conductor that covers the outer peripheral surface of the insulating layer 12. 13 and a jacket 14 made of an insulating layer covering the outer conductor 13.

The center conductor 11 is composed of a plurality of conductive wire strands. The material of the center conductor 11 is not particularly limited as long as it is a conductor, and examples thereof include copper and nickel.

The insulating layer 12 covering the outer peripheral surface of the center conductor 11 is made of an insulating resin having a predetermined thickness, and such a resin is not particularly limited. For example, polyester resin, polyolefin resin, nylon , Fluororesins, and polyester resins include polyethylene terephthalate. Polyolefin resins include ethylene-propylene copolymer resins, polypropylene, polyethylene, or mixtures thereof. Include nylon 66 and nylon 6, and examples of the fluorine-based resin include polytetrafluoroethylene, a tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer, and a tetrafluoroethylene-ethylene copolymer. In addition, in polyester-type resin, polyolefin-type resin, and nylon, it is preferable from a viewpoint of improving a flame retardance that metal hydroxide particles, such as magnesium hydroxide, and a phosphorus flame retardant are mixed.

The outer conductor 13 covering the outer peripheral surface of the insulating layer 12 is composed of a metal braid or the like. The metal braid is made of, for example, a large number of conductive wires having a diameter of 0.1 mm or less. Examples of such a metal braid material include copper and nickel.

The jacket 14 is formed by extrusion molding of a thermoplastic resin. Examples of such a thermoplastic resin include fluororesins such as polytetrafluoroethylene, tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer, and tetrafluoroethylene-ethylene copolymer. In the present embodiment, a slight gap is formed between the outer conductor 13 and the jacket 14 or between the conductive wires constituting the outer conductor 13. That is, a space surrounded by the jacket 14 is slightly formed.

The cable 10 having such a configuration is opened at both ends as shown in FIG. That is, the outer conductor 13 is exposed from the jacket 14, the insulating layer 12 is exposed from the outer conductor 13, and the center conductor 11 is exposed from the insulating layer 12.

3 is an enlarged view of the connector 20 of FIG. 1, and FIG. 4 is a cross-sectional view along the longitudinal direction of the cable 10 in the connector 20 of FIG. As shown in FIGS. 3 and 4, the connector 20 includes a frame body 21, a plurality of signal line terminals 22 as terminals for the central conductor 11 provided on the inner surface of the frame body 21, and an external conductor 13. A pair of

ground bars

24a and 24b as a terminal for use and a ground shell 25 are provided as main components. In FIG. 3, the ground shell 25 is omitted and the fixing member 30 is indicated by a broken line for easy understanding.

The frame body 21 includes a substantially flat bottom floor portion 21a, a pair of side wall portions 21c, a back wall portion 21b, and a step portion 21d, and is entirely formed by integral molding. The bottom floor portion 21a has a substantially rectangular shape when viewed along a direction perpendicular to the bottom floor portion 21a. Further, the step portion 21d is formed along the longitudinal direction of the bottom floor portion 21a on one surface of the bottom floor portion 21a, and as shown in FIG. 4, a staircase is formed between the bottom floor portion 21a and the step portion 21d. The shape of the shape is formed. Each side wall 21c is formed so as to stand perpendicular to the direction in which the step 21d is formed with respect to the bottom floor 21a, and the longitudinal direction of the bottom floor 21a and the step 21d. Is connected to both ends of the. Further, the back wall portion 21b is formed perpendicular to the bottom floor portion 21a, the step portion 21d, and the respective side wall portions 21c, and the bottom floor portion 21a, the step portion 21d, and the respective side wall portions 21c. It is connected to the.

The frame 21 is made of an insulating material, and such a material is not particularly limited as long as it is an insulating material. However, a resin such as a liquid crystal polymer, polyamide, polyphenylene sulfide, polycarbonate, polybutylene terephthalate, or the like is used. Can be mentioned.

Further, as shown in FIG. 4, the ground shell 25 is a member obtained by bending a metal plate, and covers the bottom floor portion 21a and the stepped portion 21d so as to cover the side wall portion 21c and the back wall portion 21b. It arrange | positions on the upper surface on the opposite side to the bottom floor part 21a side. Thus, the bottom floor portion 21a, the respective side wall portions 21c, the back wall portion 21b, and the ground shell 25 form a partially released space. The ground shell 25 is partially bent and extends to the outer wall surface of the back wall portion 21 b, and serves as a ground terminal 25 a of the connector 20.

The respective signal line terminals 22 are spaced apart from each other as shown in FIG. 3, and are provided in parallel with each other on the step portion 21d. As shown in FIG. 4, each signal line terminal 22 is bent substantially vertically near the boundary between the step portion 21 d and the back wall portion 21 b, penetrates the frame body 21, and the bottom surface of the frame body 21. Exposed and extended above. A portion extending on the bottom surface of the frame body 21 is a signal terminal 22 a of the connector 20.

Also, one ground bar 24a is disposed on the space side surface of the bottom floor 21a. The ground bar 24a has a substantially rectangular parallelepiped shape, and is provided along the longitudinal direction of the rectangular bottom floor portion 21a.

3 and 4, the center conductor 11 of the cable 10 is arranged on each signal line terminal 22, and the signal line terminal 22 and the center conductor 11 are connected by solder 19. Thus, the central conductor 11 of each cable 10 and the signal terminal 22a are electrically connected. Furthermore, the outer conductor 13 of the cable 10 is disposed on one ground bar 24a, the other ground bar 24b is disposed on the outer conductor 13, and the

respective ground bars

24a, 24b and the outer conductor 13 are They are connected by solder 19. Further, a convex portion 25b formed by cutting and bending a part of the ground shell 25 is connected to the side of the ground bar 24b opposite to the outer conductor 13 side. Thus, the outer conductor 13 of each cable 10 and the ground terminal 25a are electrically connected. In the present embodiment, the solder 19 that connects the ground bars 24 a and 24 b and the external conductor 13 is filled up to the space surrounded by the jacket 14. For ease of understanding, the solder 19 is omitted in FIG. 3 and the center conductor 11 and the outer conductor 13 are shown to be exposed from the solder 19 in FIG.

The fixing member 30 is fixed to the outside of the frame 21 of the connector 20 and covers at least a part of each cable 10 led out from the connector 20. The fixing member 30 is formed by insert molding so as to be integrated with the connector 20 and fixed to the connector 20. Further, the fixing member 30 covers a part of each cable 10, and the cable 10 extends from the direction in which the connector 20 is led out. The state bent about 90 degrees is maintained.

The material of the fixing member 30 is not particularly limited as long as it is a resin that can be insert-molded, and examples thereof include polyamide, polypropylene, polyethylene, ABS resin, polybutylene terephthalate, and polyvinyl chloride. It is preferable because it can be molded at a relatively low temperature and low pressure.

FIG. 5 is a cross-sectional view showing the structure of the connector 20 on a plane passing through the line VV of FIG. 4 and perpendicular to the longitudinal direction of the cable 10. 6 is an enlarged view of a region including the insulating layer 12, the outer conductor 13, and the jacket 14 of FIG.

As shown in FIGS. 4 and 5, a part of the fixing member 30 enters the inside of the frame body 21 of the connector 20 through the gap between the cable 10 and the connector 20. 21 and the jacket 14 of the cable 10 are fixed and fixed. Thus, the fixing member 30 is fixed to the connector 20 on the outer side and the inner side of the frame body 21. In particular, the fixing member 30 penetrates into the inside of the frame body 21 from between the

cables

10 and 10, and from the gap between the cable 10 and the ground shell 25 where no gap is formed so much. Not invading. Therefore, as shown in FIG. 3, when viewed from a direction perpendicular to the bottom floor portion 21 a, the edge of the fixing member 30 has a wavy shape and enters the inside of the frame body 21.

Further, in the present embodiment, as described above, the solder 19 that connects the ground bars 24a and 24b and the outer conductor 13 is within the space surrounded by the jacket 14, as shown in FIG. And the jacket 14 are connected to the outer conductor 13. As apparent from FIGS. 5 and 6, a part of the cable 10 filled with the solder 19 in the frame 21 is partially covered with the fixing member 30. The solder 19 is filled between the outer conductor 13 and the jacket 14 even outside the frame body 21, and the portion filled with the solder 19 of the cable 10 is covered with the fixing member 30. Is preferred. In this case, the portion of the cable 10 where the space between the outer conductor 13 and the jacket 14 is filled with the solder 19 is solidified by the solder 19, so that the strength against the bending force is improved. Further, by fixing the portion filled with the solder 19 of the cable 10 with the fixing member, it is possible to reduce the portion where the cable 10 is easily bent, and further to be strong against the bending.

In such a cable assembly 1, the connector 20 is inserted into a socket or the like (not shown) on the board, and the signal terminal provided on the socket or the like and the signal terminal 22a of the connector 20 are in contact with each other, so And the ground terminal 25a of the connector 20 come into contact with each other. An electrical signal is applied to the central conductor 11 of the cable 10 via a signal terminal such as a socket and a signal terminal 22a of the connector 20, and the external conductor 13 connects a ground terminal 25a of the connector 20 and a ground terminal such as a socket. Is grounded.

As described above, according to the cable assembly 1 of the present embodiment, even if the cable 10 covered with the fixing member 30 is gripped and the connector 20 is inserted into a socket or the like provided on the board, the fixing member Since 30 is fixed to the connector 20, the cable 10 can be prevented from being bent at the boundary between the connector 20 and the cable 10, and the connector 20 can be easily inserted into a socket or the like. Therefore, even when the connector 20 of the cable assembly 1 is small and it is difficult to hold the connector 20, the cable assembly 1 can be easily attached to a board or the like.

In addition, as described above, the portion filled with the solder 19 in the space surrounded by the jacket 14 is improved in strength against the force of bending by the solder 19 and is more resistant to bending. If at least a part of the portion filled with 19 is covered with the fixing member 30, the portion where the cable 10 is easily bent can be reduced. Therefore, even when the cable covered with the fixing member 30 is gripped and the connector 20 is inserted into a socket or the like provided on the board, the cable 10 can be further prevented from being bent, and the connector can be easily connected. Can be mounted on a substrate.

Further, in the present embodiment, each cable 10 is bent by about 90 degrees from the direction leading out from the connector 20 by the fixing member 30, so that when the cable assembly 1 is mounted on a board or the like, Even when components or the like are arranged in the extending direction of the derived cable 10, these components or the like can be avoided.

As described above, the embodiment of the cable assembly 1 of the present invention has been described, but the present invention is not limited to this.

For example, in the above embodiment, the example in which the cable 10 is a coaxial cable has been described. However, the present invention is not limited to this, and the cable 10 does not include the outer conductor 13 and includes the central conductor 11 and the insulating layer 12. It may be an insulated cable. In this case, the ground bars 24a and 24b and the ground shell 25 of the connector 20 are unnecessary, and the central conductor 11 of all the cables becomes a signal line, or the central conductors 11 of some cables become the ground lines. Also in this case, the solder 19 for connecting the center conductor 11 and the signal line terminal 22 is filled in the space surrounded by the insulating layer 12, that is, the space between the insulating layer 12 and the center conductor 11. It is preferable that at least a part of the portion filled with the solder 19 is covered with the fixing member 30, and further, the solder 19 penetrates into the space surrounded by the insulating layer 12 to the outside of the connector. The portion of the insulated cable filled with the solder 19 is more preferably covered with the fixing member 30.

In the above embodiment, each cable 10 is bent by about 90 degrees from the direction leading out from the connector 20 by the fixing member 30, but as long as the cable 10 has a predetermined shape by the fixing member 30. The cable 10 may have other shapes such as a straight line.

Further, in the above embodiment, a part of the cable 10 is covered with the fixing member 30, but the entire cable 10 may be covered with the fixing member 30.

In the above embodiment, the example in which the fixing member 30 has entered the inside of the frame 21 of the connector 20 has been described. However, the fixing member 30 may be fixed to the connector 20 only on the outside of the connector 20. .

Furthermore, in the above embodiment, the solder 19 is filled between the outer conductor 13 and the jacket 14, and the portion of the cable 10 filled with the solder 19 is partially covered by the fixing member 30. However, the present invention is not limited to this, and the portion of the cable 10 filled with the solder 19 may be entirely covered with a fixing member, or the portion of the cable 10 filled with the solder 19 However, it may not be covered with the fixing member.

As described above, according to the present invention, a cable assembly that can be easily attached to a substrate or the like is provided.

DESCRIPTION OF SYMBOLS 1 ... Cable assembly 10 ... Cable 11 ... Center conductor 12 ... Insulating layer 13 ... Outer conductor 14 ... Jacket 19 ... Solder 20 ... Connector 21 ... Frame 21a ... Bottom floor part 21b ... Back wall part 21c ... Side wall part 21d ... Step part 22 ... Signal line terminal 22a ... Signal terminal 24a, 24b ... Ground bar 25 ..Ground shell 25a ... ground terminal 25b ... convex 30 ... fixing member

Claims

A plurality of cables having conductors;
A connector having a plurality of terminals connected to one end of the conductor of each of the cables;
A fixing member fixed to the connector and covering at least a part of each of the cables;
With
The cable assembly, wherein the fixing member covers the cable so that the cable has a predetermined shape.
The cable assembly according to claim 1, wherein the predetermined shape is a shape bent substantially vertically.
The connector has a frame that houses one end of the cable,
The cable assembly according to claim 1, wherein the fixing member is fixed to the connector on an outer side and an inner side of the frame body.
Each of the cables has an insulating layer covering the conductor,
The conductor of the cable is fixed to the terminal of the connector by solder,
The solder is filled in a part of the space between the conductor and the insulating layer;
The cable assembly according to any one of claims 1 to 3, wherein the fixing member covers at least a part of a portion of the cable filled with the solder.
The cable assembly according to any one of claims 1 to 4, wherein the fixing member is made of a resin provided by insert molding.