JP6399594B2 - Coaxial cable connector with improved insulation performance - Google Patents

Description

  The present invention relates to a coaxial cable connector, and more particularly to a coaxial cable connector with improved insulation performance.

Patent Document 1 shows an example of a conventional coaxial cable connector. 11 and 12 are schematic cross-sectional views of the coaxial cable connector disclosed in Patent Document 1. FIG. This type of coaxial cable connector is used, for example, in information equipment such as a mobile phone, a smart phone, a personal digital assistant (PDA), a notebook personal computer, or an electric device such as a home appliance.
The outer shell of the connector is formed by a cylindrical outer conductor shell 101. The outer conductor shell 101 is made by press-molding a metal plate material, and includes a body portion 106 having a longitudinal axis 105 as a central axis, and a holder portion 107 integrally extending from the body portion 106. A terminal 103 is disposed inside the cylindrical portion formed by the outer conductor shell 101 and is held in an electrically coupled state with the core wire 115 of the coaxial cable 104.
As shown in FIG. 11, the holder portion 107 stands upright from the body portion 6 in parallel with the longitudinal axis 105 before assembling the connector. At the time of assembly, the holder portion 107 is transverse to the longitudinal axis 105 as shown in FIG. It is bent in a direction along the axis 108. When the holder portion 107 is bent in a direction along the horizontal axis 108 perpendicular to the vertical axis 105, the outer conductor shell 101 is electrically connected to the outer conductor 112 of the coaxial cable 104. At this time, the part 102C of the housing 10 is bent in the direction of the driven axis 108 according to the bending of the holder portion 107 through the contact with the protrusion 107a provided on the inner wall of the outer conductor shell 101. As a result, the bent housing A portion 102C of 10 is disposed between the terminal 103 and the outer conductor shell 101 to prevent electrical connection therebetween.

Japanese Patent No. 2504704

According to the connector structure of Patent Document 1, even if a part of the terminal 103 is exposed from the housing 102, the housing part 102 </ b> C disposed between the terminal 103 and the external conductor shell 101 is used. Thus, contact between the exposed portion of the terminal 103 and the outer conductor shell can be prevented.
However, in this conventional connector structure, the terminal 103 and the housing 102 are separate members, and the terminal 103 and the external conductor shell 101 are insulated by bending a part 102C of the housing 102 during assembly. It has become. Further, in such a structure, there arises a problem that a reduction in height of the connector is hindered by a part 102C of the housing 102 sandwiched between the terminal 103 and the outer conductor shell 101.
The present invention has been made to solve these problems in the conventional connector structure, and with a simpler structure, the terminal 103 and the external conductor shell 101 are reliably insulated from each other, and the connector is reduced in height. An object of the present invention is to provide a coaxial cable connector that can be used.

(1) A coaxial cable connector of the present invention includes a terminal, a housing integrally formed with the terminal, and an outer conductor shell that covers at least a part of the housing, and is opposed to the outer conductor shell of the housing. The surface is provided with a through hole that exposes at least a part of the terminal, and is provided with a raised portion that protrudes toward the outer conductor shell and separates the exposed portion from the outer conductor shell, A recess portion capable of accommodating the raised portion is provided on a surface of the outer conductor shell facing the housing. According to this configuration, for example, the exposed portion of the terminal generated when the terminal and the housing are integrally formed is separated from the outer conductor shell using the raised portion of the housing, so that the insulation distance between the exposed portion and the outer conductor shell is increased. Can be bigger. Thereby, it is possible to reduce the height of the connector while reliably insulating the terminal and the outer conductor shell with a simpler structure. Furthermore, the housing can be easily positioned with respect to the outer conductor shell by fitting the raised portion into the recess.
(2) In the coaxial cable connector according to (1), the outer conductor shell is formed by processing a plate metal, and the recess portion of the outer conductor shell punches the plate metal. May be formed.
Since the hollow portion can be formed only by punching the plate-like metal, the manufacturing cost can be reduced at a low cost. Moreover, the strength of the outer conductor shell can be increased by providing the recess.
(3) In the coaxial cable connector according to (1) or (2), the exposed portion of the terminal may be positioned on a side opposite to the contact portion of the terminal in the thickness direction of the terminal. Good.
In order to reliably suppress the terminal shake due to the resin flow that occurs during integral molding, it is necessary to hold a part of the terminal with a mold. In both cases, it is effective to press the upper surface side of the elastic displacement portion with a mold. However, the portion pressed by this mold eventually becomes an exposed portion, and thus the exposed portion of the terminal includes a portion positioned on the side opposite to the contact portion of the terminal in the thickness direction of the terminal. It will be.
(4) In the coaxial cable connector according to any one of (1) to (3), the outer conductor shell is formed of a single plate-like metal, and has a substantially cylindrical portion connected to the cylindrical shell of the mating connector. The housing may be attached to the outer conductor shell by sandwiching at least a part of the housing between the substantially cylindrical portion and the facing surface of the outer conductor shell.
According to this configuration, the housing can be easily attached to the outer conductor shell using the substantially cylindrical portion which is a part of the outer conductor shell.
(5) In the coaxial cable connector according to (4), it is preferable that the substantially cylindrical portion does not overlap with the coaxial cable in a cylindrical direction of the substantially cylindrical portion.
Since the substantially cylindrical portion does not overlap with the coaxial cable, the dimension does not increase in the facing direction of the outer conductor shell and the housing, and therefore the connector can be reduced in height.
(6) In the coaxial cable connector (1) according to any one of (1) to (5), the coaxial cable connector may be a right angle connector.

  ADVANTAGE OF THE INVENTION According to this invention, the coaxial cable connector which can aim at the height reduction of a connector is provided with a simpler structure, ensuring a terminal and an outer conductor shell being insulated.

It is a bottom side top view of the coaxial cable connector of this invention with which the coaxial cable was connected. It is a disassembled perspective view of the coaxial cable connector of this invention. It is a bottom side perspective view of a housing. It is the upper side perspective view of a housing, and the bottom side perspective view of an external conductor shell. It is the sectional view on the AA line of FIG. It is a figure which shows the modification of a housing. It is a figure explaining the assembly process of a coaxial cable connector. It is a figure explaining the assembly process of a coaxial cable connector. It is a figure explaining the assembly process of a coaxial cable connector. It is a figure explaining the assembly process of a coaxial cable connector. It is a schematic sectional drawing of the connector structure of the conventional coaxial cable connector. It is a schematic sectional drawing of the connector structure of the conventional coaxial cable connector.

A preferred embodiment of the present invention will be described with reference to the accompanying drawings. Although a so-called right angle connector will be described here, the present invention is not limited to this.
FIG. 1 is a bottom plan view of a coaxial cable connector 1 of the present invention in which a coaxial cable 10 is connected, and FIG. 2 is an exploded perspective view of the coaxial cable connector 1. The coaxial cable connector 1 is symmetric with respect to the center axis, and is mainly coaxial with the conductive terminal 20, the insulating housing 40 integrally formed with the terminal 20, and at least a part of the housing 40. An outer conductor shell 70 covering at least a part of the cable 10 is provided. In addition, since the terminal 20 and the housing 40 are integrally formed, they cannot be actually disassembled, but FIG. 2 shows a state where they are separated for convenience. When the coaxial cable connector 1 is assembled, the terminal 20 and the housing 40 and the coaxial cable 10 are connected to the outer conductor shell 70 in this order from the bottom side to the upper side of the coaxial cable connector 1 along the arrow “β” direction shown in the drawing. It is arranged and fixed to the outer conductor shell 70.

  The coaxial cable 10 has the same structure as that of a conventional general coaxial cable, that is, an insulating coating 11, an outer conductor 12, an insulator 13, and a core wire 14 from the outermost shell toward the center. This structure is well known and will not be described in detail.

  The terminal 20 has a predetermined length along the axial direction α of the coaxial cable 10. A step portion 25 is provided near the middle of the main body portion 26, and in the housing 40 integrally formed by the step portion 25, the rear end side (24) of the terminal 20 is more coaxial than the front end side (22). 10, while the front end side (22) of the terminal 20 is closer to the surface 78 of the outer conductor shell 70 than the rear end side (24). On the rear end side (24) of the terminal 20, a connection portion 24 that is brought into contact with the core wire 14 of the coaxial cable 10 is provided, and this connection portion 24 has a core wire of the coaxial cable 10 when the coaxial cable connector 1 is assembled. 14 is installed. Further, a contact portion 22 that is brought into contact with a center terminal (not shown) of the mating connector is provided on the front end side (22) of the terminal 20. The contact portion 22 is provided in a state of being raised toward the contact side with the mating connector, and is formed as an elastic displacement portion 22 ′ composed of two pieces that can be sandwiched around the center terminal of the mating connector. ing. Of course, it does not need to be formed as the elastic contact portion 22 ′, and may be formed as a simple insertion hole, for example.

  FIG. 3 is a bottom perspective view of the housing 40 formed integrally with the terminal 20, and FIG. 4 is a front perspective view thereof. 4 further shows a bottom perspective view of the outer conductor shell 70 at an angle different from that of FIG. FIG. 5 is a cross-sectional view taken along line AA in FIG.

The housing 40 mainly includes a main body portion 46, a cylindrical portion 42 provided on the front end side of the main body portion 46, and cable fixing portions (41, 50, etc.) provided on the rear end side of the main body portion 46.
Each of these parts is integrally formed with the terminal 20 by a resin mold. However, a part of the terminal 20 remains exposed even after the integral molding. The exposed portion of the terminal 20 includes not only the connecting portion 24 but also the elastic displacement portion 22 ′ of the contact portion 22 on the bottom side of the contact portion 22 and its peripheral portion, or a portion on the upper surface side of the contact portion 22, that is, In addition, a part of the side facing the external conductor shell 70 that is positioned on the side (upper surface side) opposite to the contact portion 22 of the terminal 20 in the thickness direction of the terminal 20 is included. The part of the upper surface side of the contact portion 22 is also exposed because of a particular problem during integral molding. That is, in order to reliably suppress the deflection of the terminal 20 against the resin flow during the integral molding, it is necessary to hold a part of the terminal 20 with a mold. It is effective to press the upper surface side of the elastic displacement portion 22 ′ with a mold together with a certain elastic displacement portion 22 ′ on the bottom side. However, as a result, the portion pressed by the mold remains as the exposed portion 27 by the resin through-hole 48, so that the exposed portion 27 of the terminal 20 contacts the terminal 20 in the thickness direction of the terminal. What is positioned on the side opposite to the portion 22 is included.

The main body portion 46 has a substantially cubic shape as a whole, but has a protruding portion 47 that protrudes toward the approaching side of the mating connector on the upper surface thereof. The protruding portion 47 can be used as a portion that supplements the discontinuous portion 73 of the substantially cylindrical portion 72 of the outer conductor shell 70.
The cylindrical portion 42 on the distal end side of the main body portion protrudes from the upper surface portion 45 toward the contact side with the mating connector, and the contact portion 22 of the terminal 20 is disposed at the center thereof. At the time of mating with the mating connector, the cylindrical portion 42 is inserted into the cylindrical shell of the mating connector, and at the same time, the center terminal disposed at the center of the cylindrical shell at the contact portion 22 disposed at the center of the cylindrical portion 42. (Not shown) is inserted and contacted. Three protrusions 44 extending from the upper surface portion 45 of the cylindrical portion 42 toward the front side and the left and right sides can be used to position the housing 40 on the outer conductor shell 70.
An installation surface 41 for installing the core wire 14 of the coaxial cable 10 is provided in the cable fixing portion (41, 50, etc.) on the rear end side of the main body. Even after the terminal 20 and the housing 40 are integrally molded, the connecting portion 24 of the terminal 20 is exposed from the installation surface 41. In addition, although the installation surface 41 is substantially flat, the connecting portion 24 may be protruded or recessed from the installation surface 41. Thereby, the contact between the terminal 20 and the core wire 14 can be ensured. In the example shown in the figure, the depression 43 is provided.

  In order to fix the core wire 14, a pair of crimping pieces 50 </ b> A and 50 </ b> B are provided on the cable fixing portion (41, 50, etc.). The pair of pressure-bonding pieces 50A and 50B are supported only on one side 53 on each side facing each other with the installation surface 41 interposed therebetween, and are installed on the installation surface 41 on which the core wire 14 is installed around the support portions 53A and 53B. It can be bent toward you.

  The outer conductor shell 70 is formed by punching and bending a single plate metal. The outer conductor shell 70 mainly includes an arrangement surface 85 on which the housing 40 and the coaxial cable 10 are arranged, a substantially cylindrical portion 72 provided on the distal end side of the arrangement surface 85, and a plurality of crimping portions 80, 83, 84. The substantially cylindrical portion 72 is a portion connected to a cylindrical shell (not shown) of the mating connector when fitted with the mating connector. The front end side of the arrangement surface 85 has a scoop shape as a whole, and surrounds the substantially cylindrical portion 72 by the rising portion 74 that is a part constituting the spoon portion, thereby strengthening the strength of the substantially cylindrical portion 72. It has become.

  As well shown in FIG. 4, the housing 40 has a raised portion 49 that protrudes toward the outer conductor shell 70 on the surface 45 facing the outer conductor shell 70. The raised portion 49 has, for example, a cross shape as a whole, and is composed of two straight portions having a predetermined width with a through hole 48 that exposes a portion 27 of the terminal 20 as an intersection. The straight portion extends longer than the length of the step portion 25 from the front end side of the terminal 20 along the axial direction α of the coaxial cable 10. Corresponding to the raised portion 49 of the housing 40, the outer conductor shell 70 has a cross-shaped depression that is recessed on a surface 78 facing the surface 45 of the housing 40 toward the side opposite to the side facing the housing 40. A portion 79 is provided. The raised portion 49 is formed when the terminal 20 and the housing 40 are integrally formed when the housing 40 is disposed on the outer conductor shell 70 by providing the raised portion 49 and the recessed portion 79 that can be accommodated in the recessed portion 79. The exposed portion 27 of the terminal 20 by the through hole 48 can be pulled away from the outer conductor shell 70, and the insulation distance between the exposed portion 27 and the outer conductor shell 70 can be increased. Therefore, the terminal 20 and the outer conductor shell 70 can be reliably insulated with a simple structure, and the height of the connector can be reduced. Further, by providing the raised portion 49 and the recessed portion 79, when the housing 40 is disposed on the outer conductor shell 70, the raised portion 49 is fitted into the recessed portion 79 so that the housing 40 is positioned at a predetermined position of the outer conductor shell 70. It can be easily positioned. The shape of the raised portion 49 and the recessed portion 79 is not limited to a cross, and may be, for example, a triangular shape or a quadrangular shape. Further, the degree of the depression of the depression 79 with respect to the protruding part 49 may be increased. Further, the raised portion 49 does not need to completely cover the periphery of the edge of the through hole 48 as in the embodiment shown in FIG. 4. For example, as shown in the modified example of FIG. The raised portion 49 ′ may be provided only in a portion away from the edge without providing the raised portion 49 ′ in the vicinity of the edge. In short, it is sufficient that the exposed portion 27 can be separated from the outer conductor shell 70 by using the raised portion '49 and the recessed portion 79, and therefore, for example, the cross portion may be formed discontinuously. In particular, since the outer conductor shell 70 is formed of a plate-like metal, the recess 79 can be easily formed by stamping, and the manufacturing cost can be reduced. Further, the recess 79 is useful for reinforcing the strength of the outer conductor shell 70. In the modification of FIG. 6, the shape of the crimping pieces 50A ′ and 50B ′ is different from that of the crimping pieces 50A and 50B of the embodiment of FIG. 3, but their functions are basically shown in FIG. The same as the crimping pieces 50A and 50B. The same reference numerals are used in FIG. 6 for members corresponding to the embodiment of FIG.

  The substantially cylindrical portion 72 is connected to the arrangement surface 85 in a state where it can be bent at the bent portion 72 ′. After the housing 40 is arranged at a predetermined position of the outer conductor shell 70, the substantially cylindrical portion 72 is bent toward the arrangement surface 85. 1 to 5 all show a state after the substantially cylindrical portion 72 is bent. When the substantially cylindrical portion 72 is bent, the left and right sides extending from the front portion 45 of the cylindrical portion 42 are between the notch 71 of the substantially cylindrical portion 72 and the surface 78 of the outer conductor shell 70 facing the housing 40. The protrusions 44 are respectively sandwiched, whereby the housing 40 can be easily fixed to the outer conductor shell 70. Similarly, a protrusion with which the front protrusion 44 ′ is engaged is provided on the inner surface of the bent portion 72 ′ of the outer conductor shell 70.

  The caulking portion is formed as a caulking portion forming a pair in which the caulking portion is arranged on each side facing each other with the arrangement surface 85 interposed therebetween. Here, a total of three sets, that is, a front caulking portion 80, an intermediate caulking portion 83, and a rear caulking portion 84 are provided along the axial direction α of the coaxial cable 10. The front caulking portions 80A and 80B are mainly for caulking the pair of crimping pieces 50A and 50B from the outside, and the intermediate caulking portions 83A and 83B are mainly for caulking the outer conductor 12, the rear side The caulking portions 84 </ b> A and B are mainly for caulking the insulating coating 11.

  The assembly process of the coaxial cable connector 1 will be described with reference to FIGS. 9 and 10 both show the state after the assembly is completed, but FIG. 9 shows the state of the crimping pieces 50A and 50B by removing a part of the front caulking portion 80 for convenience. ing.

  After the housing 40 is attached to the outer conductor shell 70 as shown in FIG. 7, the coaxial cable 10 is positioned on the housing 40 and the outer conductor shell 70 as shown in FIG. 8. At this time, the core wire 14 of the coaxial cable 10 is installed on the installation surface 41 of the housing 40, and the outer conductor 12 of the coaxial cable 10 is further disposed at a corresponding position of the intermediate caulking portion 83, and further, the insulation coating 11 of the coaxial cable 10. Are arranged at corresponding positions of the rear caulking portion 84, respectively.

Next, as shown in FIGS. 9 and 10, the front caulking portions 80 </ b> A and 80 </ b> B, the intermediate caulking portion 83, and the rear caulking portion 84 are caulked against the housing 40 and the coaxial cable 10, respectively. At this time, the crimping pieces 50A and 50B are bent toward the installation surface 41 through contact with the front caulking portions 80A and 80B. As a result, the core wire 14 of the coaxial cable 10 is joined to the crimping pieces 50A and 50B and the installation surface 41. It is sandwiched between and fixed there. According to this configuration, since the core wire 14 of the coaxial cable 10 can be held and fixed simultaneously with the caulking work of the front caulking portions 80A and 80B, the work can be simplified. The insulator 13 of the coaxial cable 10 is only covered with the overhang portions 56 and 57 of the pair of crimping pieces 50A and 50B when the pair of crimping pieces 50A and 50B are bent. There is no particular caulking part.
When the intermediate caulking portion 83 is caulked against the external conductor 12, the external conductor shell 70 is electrically connected to the external conductor 12 through contact between the intermediate caulking portion 83 and the external conductor 12. As a result, when the coaxial cable connector 1 and the mating connector are fitted, the outer conductor 12 of the coaxial cable 10 and the cylindrical shell of the mating connector are connected through the connection between the substantially cylindrical portion 72 of the outer conductor shell 70 and the cylindrical shell of the mating connector. Are electrically connected. In the same manner, the rear caulking portion 84 is caulked with respect to the insulating coating 11, but of course, no electrical connection occurs here. As is apparent from FIG. 8 and the like, even after the coaxial cable connector 1 is assembled, the substantially cylindrical portion 72 is connected to the coaxial cable 10 in the cylindrical direction of the substantially cylindrical portion 72 (the direction of arrow “β” in FIG. 2). Since there is no overlap, the dimension does not increase in the facing direction of the outer conductor shell 70 and the housing 40, and therefore, the height of the connector can be reduced.

  Of course, the present invention is not limited to the above-described embodiment, and various modifications can be made. Accordingly, the scope of the claims of the present invention includes various modifications usually made by those skilled in the art.

  It can be widely used for coaxial cable connectors having terminals and shells that require insulation, and other electrical connectors.

DESCRIPTION OF SYMBOLS 1 Coaxial cable connector 10 Coaxial cable 11 Insulation coating 12 Outer conductor 13 Insulator 14 Core wire 20 Terminal 24 Connection part 27 Exposed part 40 Housing 41 Installation surface 42 Cylindrical part 46 Main body part 48 Through-hole 49 Raised part 50 Crimp piece 70 Outer conductor shell 72 substantially cylindrical part 73 discontinuous part 80A, 80B front side caulking part 83 middle caulking part 84 rear side caulking part 85 arrangement surface

Claims (10)

A terminal,
A housing integrally formed with the terminal;
An outer conductor shell covering at least a portion of the housing,
A through hole for exposing at least a part of the terminal is provided on a surface of the housing facing the outer conductor shell, and the exposed portion protrudes from the outer conductor shell by protruding toward the outer conductor shell. A raised ridge is provided,
A coaxial cable connector, wherein a concave portion capable of accommodating the raised portion is provided on a surface of the outer conductor shell facing the housing. The outer conductor shell is formed by processing a plate metal,
The coaxial cable connector according to claim 1, wherein the hollow portion of the outer conductor shell is formed by punching out the plate metal.   The coaxial cable connector according to claim 1, wherein the exposed portion of the terminal is positioned on a side opposite to the contact portion of the terminal in the thickness direction of the terminal. The outer conductor shell is formed of a single plate-like metal and has a substantially cylindrical portion connected to the cylindrical shell of the mating connector;
4. The housing according to claim 1, wherein the housing is attached to the outer conductor shell by sandwiching at least a part of the housing between the substantially cylindrical portion and the opposing surface of the outer conductor shell. 5. The coaxial cable connector described.   The coaxial cable connector according to claim 4, wherein the substantially cylindrical portion does not overlap with the coaxial cable in a cylindrical direction of the substantially cylindrical portion.   The coaxial cable connector according to claim 1, wherein the coaxial cable connector is a right angle type connector. A terminal,
A housing integrally formed with the terminal;
An outer conductor shell covering at least a portion of the housing;
With
The outer conductor shell is
A surface on which the housing is disposed;
A substantially cylindrical portion covering a side surface of the cylindrical portion of the housing disposed on the surface;
A caulking portion for caulking the cable fixing portion of the housing disposed on the surface;
Have
The terminal is
A contact portion provided in a cylindrical portion of the housing, in which a center terminal of a mating connector is brought into contact with the housing from a side opposite to the surface in the thickness direction of the terminal;
A connection portion provided in a cable fixing portion of the housing, which is brought into contact with a core wire of a coaxial cable from a side opposite to the surface with respect to the housing in a thickness direction of the terminal;
Have
The coaxial cable connector, wherein the contact portion is closer to the arrangement surface than the connection portion in the thickness direction of the terminal. The coaxial cable connector according to claim 7, wherein the terminal has a stepped portion between the contact portion and the connection portion that brings the contact portion closer to the arrangement surface than the connection portion. The coaxial cable connector according to claim 8, wherein the step portion is embedded in the housing in a thickness direction of the terminal. The coaxial cable connector according to any one of claims 7 to 9, further comprising a plate-like portion integrally formed with the housing between the contact portion and the connection portion.

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