CN109698441B - Connector for coaxial cable - Google Patents

Connector for coaxial cable Download PDF

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Publication number
CN109698441B
CN109698441B CN201811222113.0A CN201811222113A CN109698441B CN 109698441 B CN109698441 B CN 109698441B CN 201811222113 A CN201811222113 A CN 201811222113A CN 109698441 B CN109698441 B CN 109698441B
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China
Prior art keywords
conductor
inner conductor
connector
outer conductor
conductive member
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CN201811222113.0A
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Chinese (zh)
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CN109698441A (en
Inventor
岡部清貴
生田夏木
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Hirose Electric Co Ltd
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Hirose Electric Co Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/502—Bases; Cases composed of different pieces
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/38—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H01R4/183—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2107/00—Four or more poles

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  • Coupling Device And Connection With Printed Circuit (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Abstract

A connector for a coaxial cable, which can easily perform impedance matching even in a structure that an inner conductor connecting part of a central conductor is not fully surrounded by an outer conductor. In an outer conductor (16) of a coaxial terminal (11) of a connector (1), an inner conductor barrel arrangement section (23) is provided between an outer fitting section (17) and an outer conductor barrel section (21), and an inner conductor barrel section (14) of a center conductor (12) is arranged inside the inner conductor barrel arrangement section (23). An opening (25) into which a tool for connecting the inner conductor (6) to the inner conductor tube (14) by crimping is insertable is formed in the inner conductor tube arrangement section (23). A connector (1) comprises: a conductive member (31), wherein the conductive member (31) is electrically connected to the outer conductor (7) or the outer conductor (16), enters the inner conductor barrel arrangement section (23) from the opening section (25), and approaches the inner conductor barrel section (14); and a dielectric sheet (34), wherein the dielectric sheet (34) is provided between the conductive member (31) and the inner conductor tube (14).

Description

Connector for coaxial cable
Technical Field
The present invention relates to a connector for coaxial cables, which is preferably used in a process of connecting a coaxial cable to a device, an electric circuit, another coaxial cable, or the like.
Background
As a coaxial cable connector used by being attached to an end portion of a coaxial cable, there is known a coaxial terminal including a center conductor and an outer conductor provided on an outer peripheral side of the center conductor via an insulating member.
In such a connector for a coaxial cable, an inner conductor tube for crimping and connecting an inner conductor (core wire) of the coaxial cable to the center conductor is provided in the center conductor. Further, the outer conductor is provided with an outer conductor tube for connecting an outer conductor (braid) of the coaxial cable to the outer conductor by crimping. In addition, the outer conductor is provided with a covering tube for fixing the outer conductor to the insulating cover of the coaxial cable by pressure welding.
In a general coaxial terminal, in a state where a coaxial cable is connected and fixed to the coaxial terminal, a portion where an inner conductor and a center conductor are pressure-connected by an inner conductor barrel is disposed inside an outer conductor and surrounded by the outer conductor. Therefore, the operation of connecting and fixing the coaxial cable, which is subjected to the terminal treatment and has the inner conductor and the outer conductor exposed, to the coaxial terminal generally passes through the following steps. (1) First, the inner conductor and the center conductor are connected by crimping by the inner conductor barrel. (2) Next, the center conductor to which the inner conductor is connected is inserted inside the outer conductor. (3) Then, the outer conductor and the outer conductor are connected by pressure welding through the outer conductor tube. In the case of a coaxial terminal in which a covering tube is provided on the outer conductor, the outer conductor is fixed to the insulating cover by crimping with the covering tube in a step after the inner conductor and the center conductor are connected by crimping.
On the other hand, in recent years, a technique capable of performing pressure-bonding connection of an inner conductor tube to an inner conductor and a center conductor, pressure-bonding connection of an outer conductor tube to an outer conductor and an outer conductor, and pressure-bonding fixation of a cover tube to an insulating cover layer and an outer conductor at the same time has been widespread (for example, see patent document 1 below). Hereinafter, the above-described technique is referred to as a "collective crimping method". According to the collective crimping method, the number of man-hours for connecting and fixing the coaxial cable to the coaxial terminal can be reduced.
In order to perform the collective crimping method, the outer conductor of the coaxial terminal is configured to have an opening portion through which a crimping tool can be inserted into a portion to be crimped and connected between the inner conductor and the center conductor by the inner conductor barrel. Thus, the inner conductor barrel, the outer conductor barrel, and the covering barrel of the coaxial terminal can be brought into direct contact with each crimping tool from the outside, and each barrel can be crimped by each crimping tool.
A terminal crimping device for performing a collective crimping method includes:
a first crimping tool that presses the inner conductor barrel and crimp-connects the inner conductor and the center conductor;
a second crimping tool that presses the outer conductor barrel and crimp-connects the outer conductor and the outer conductor; and
a third crimping tool for pressing the covering cylinder and crimping and connecting the insulating cover and the outer conductor,
by simultaneously operating the three crimping tools, the inner conductor and the center conductor are crimped and connected, the outer conductor and the outer conductor are crimped and connected, and the insulating cover and the outer conductor are crimped and fixed together.
On the other hand, patent document 2 describes a shielded connector that can cope with high frequencies. The shielded connector includes: an inner conductor terminal to which a signal conductor of a shield cable is connected; a substantially cylindrical outer conductor terminal to which a shield conductor of a shield cable is connected; a dielectric; and a small-diameter body having conductivity. The inner conductor terminal is accommodated in the outer conductor terminal with a dielectric interposed therebetween. The small diameter body is attached to the dielectric inside the outer conductor terminal, and is electrically connected to the outer conductor terminal, and covers the pressure-bonding section of the inner conductor terminal. Patent document 2 describes that the diameter of the outer conductor terminal can be electrically reduced by the small diameter body so as to be close to the pressure-bonding section of the inner conductor terminal, and that the impedance in the vicinity of the pressure-bonding section can be matched with other portions.
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open publication No. 2011-3363
Patent document 2: japanese patent laid-open No. 2003-163058
Disclosure of Invention
However, in the coaxial terminal based on the collective crimping method, as described above, the opening portion is formed in the outer conductor, and the crimping tool capable of crimping and connecting the inner conductor and the center conductor is inserted into the opening portion toward the inside of the outer conductor. As a result, the portion of the inner conductor tube, to which the inner conductor and the center conductor are connected by crimping, is not completely surrounded by the outer conductor, and the portion of the inner conductor tube is exposed through the opening. Therefore, it is difficult to match the characteristic impedance of the connector with the characteristic impedance of the coaxial cable, the characteristic impedance of the mating connector, and the like.
In this regard, the characteristic impedance of the connector can be adjusted by bringing the conductive member electrically connected to the outer conductor close to the inner conductor barrel. However, since the inner conductor tube is disposed in a narrow space inside the outer conductor, it is not easy to form a structure in which the conductive member is close to the inner conductor tube.
Patent document 2 describes a structure in which a crimped portion of an inner conductor terminal is covered with a dielectric and a small diameter body, but in the above structure, it is difficult to achieve a structure in which a conductive member is arranged close to an inner conductor tube disposed in a narrow space inside an outer conductor.
The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a coaxial cable connector in which impedance matching can be easily performed even in a structure in which an inner conductor connecting portion (for example, an inner conductor cylindrical portion) of a center conductor is not sufficiently surrounded by an outer conductor.
In order to solve the above-described problems, a coaxial cable connector according to the present invention includes: a coaxial terminal including a center conductor, an outer conductor provided on an outer peripheral side of the center conductor, and an insulating member provided between the center conductor and the outer conductor; and a housing formed of an insulating material and accommodating the coaxial terminal, the center conductor including: a center contact portion disposed on a front end side of the center conductor and contacting a mating center conductor of a mating connector; and an inner conductor connecting portion which is disposed on a rear end side of the center conductor and connects an inner conductor of the coaxial cable, the outer conductor including: an outer fitting portion that is disposed on a distal end side of the outer conductor and that is fitted to a mating outer conductor of a mating connector; an outer conductor cylindrical portion which is arranged on a rear end side of the outer conductor and which pressure-contacts and connects an outer conductor of the coaxial cable; and an inner conductor arrangement portion which is arranged between the outer fitting portion of the outer conductor and the outer conductor cylindrical portion and in which an inner conductor connection portion is arranged, a pair of opening portions which open an inside of the inner conductor arrangement portion toward an outside of the inner conductor arrangement portion being formed in one side and the other side of the coaxial terminal in a radial direction, respectively, in the inner conductor arrangement portion, wherein the connector for a coaxial cable includes: a conductive member electrically connected to the outer conductor or the outer conductor, entering the inside of the inner conductor arrangement portion from one of the pair of opening portions, and being close to the inner conductor connection portion; and a dielectric sheet provided between the conductive member and the inner conductor connecting portion.
In the connector for a coaxial cable according to the present invention, the conductive member is electrically connected to the outer conductor or the outer conductor, enters the inner conductor arrangement portion from the one opening portion, and approaches the inner conductor connection portion. By bringing the conductive member electrically connected to the outer conductor close to the inner conductor connecting portion, the impedance of the peripheral portion of the inner conductor connecting portion can be easily adjusted. This makes it possible to easily match the characteristic impedance of the coaxial cable connector with the characteristic impedance of the coaxial cable, the characteristic impedance of the mating connector, and the like.
Further, by bringing the conductive member close to the inner conductor connecting portion, the conductive member and the inner conductor connecting portion may contact each other. However, in the coaxial cable connector according to the present invention, the dielectric sheet is provided between the conductive member and the inner conductor connecting portion. The dielectric sheet prevents the conductive member from contacting the inner conductor connecting portion. Further, the impedance of the peripheral portion of the inner conductor connecting portion can be adjusted by the dielectric sheet.
In the coaxial cable connector according to the present invention, the dielectric sheet is preferably formed on the conductive member.
Preferably, in the coaxial cable connector according to the present invention, the inner conductor arrangement portion includes a pair of intermediate wall portions on both sides of the inner conductor connection portion, the pair of intermediate wall portions connect the outer fitting portion and the outer conductor cylindrical portion, the conductive member includes a pair of contact portions, and the pair of contact portions contact outer surfaces of the pair of intermediate wall portions.
Preferably, in the coaxial cable connector according to the present invention, the one opening is formed in a lower portion of the inner conductor arrangement portion, and the pair of intermediate wall portions are arranged on left and right sides of the inner conductor connection portion, respectively, and the conductive member includes: a conductive plate portion that covers the one opening portion from below; a left plate portion that rises from the left portion of the conductive plate portion, is disposed between the left intermediate wall portion and the left wall portion of the housing, and is provided with a contact portion that contacts an outer surface of the left intermediate wall portion; a left side support portion formed on the left plate portion and supporting the left plate portion between the left intermediate wall portion and the left wall portion of the housing at a position forward or rearward of a contact portion provided on the left plate portion; a right plate portion that rises from a right portion of the conductive plate portion, is disposed between the right intermediate wall portion and the right wall portion of the housing, and is provided with a contact portion that contacts an outer surface of the right intermediate wall portion; and a right side support portion formed in the right plate portion and supporting the right plate portion between the right intermediate wall portion and the right wall portion of the housing at a position forward or rearward of the contact portion provided in the right plate portion.
In the coaxial cable connector according to the present invention, it is preferable that the conductive plate portion has a protrusion protruding into the inner conductor arrangement portion through the one opening, and a protruding end of the protrusion is located close to the inner conductor connection portion.
In the coaxial cable connector according to the present invention, it is preferable that each of the intermediate wall portions has a locking piece protruding downward from the intermediate wall portion, and notches are formed in left and right portions of the conductive plate portion, the notches locking the pair of locking pieces.
In the coaxial cable connector according to the present invention, it is preferable that the conductive member has an external connection portion for electrically connecting to a shield shell provided in the mating connector, and the housing has a connection hole for making the external connection portion face the outside of the housing.
In the coaxial cable connector according to the present invention, it is preferable that the conductive member includes a connection cylindrical portion for connecting the conductive member to the outer conductor or the outer conductor by pressure contact, and the connection cylindrical portion is connected between the inner conductor arrangement portion and the outer conductor cylindrical portion.
According to the present invention, impedance matching can be easily performed even in a connector having a structure in which the inner conductor connecting portion of the center conductor is not sufficiently surrounded by the outer conductor.
Drawings
Fig. 1 is a perspective view showing an external appearance of a coaxial cable connector according to a first embodiment of the present invention.
Fig. 2 is an exploded perspective view showing a coaxial cable connector according to a first embodiment of the present invention.
Fig. 3 is a sectional view showing the coaxial cable connector according to the first embodiment of the present invention as viewed from the direction of arrows III-III in fig. 1.
Fig. 4 is a cross-sectional view showing a state where the coaxial terminal and the conductive member of the coaxial cable connector according to the first embodiment of the present invention are viewed from the direction of arrows IV-IV in fig. 3.
Fig. 5 is a sectional view showing the center conductor, the outer conductor, and the insulating member of the coaxial terminal of the coaxial cable connector according to the first embodiment of the present invention.
Fig. 6 is an external view showing a conductive member of the coaxial cable connector according to the first embodiment of the present invention.
Fig. 7 is a sectional view showing a state where the coaxial terminal and the conductive member of the coaxial cable connector according to the first embodiment of the present invention are viewed from the direction of arrows VII-VII in fig. 4.
Fig. 8 is an explanatory view showing the attachment of the conductive member to the coaxial terminal in the coaxial cable connector according to the first embodiment of the present invention.
Fig. 9 is an explanatory view showing a coaxial terminal and a conductive member of the coaxial cable connector according to the first embodiment of the present invention.
Fig. 10 is a circuit diagram showing an electrical path of the outer conductor of the coaxial cable connector, the conductive member, the outer conductor of the coaxial cable, the outer conductor of the mating connector, the shield case, and the ground circuit of the substrate according to the first embodiment of the present invention.
Fig. 11 is an exploded perspective view showing a coaxial cable connector according to a second embodiment of the present invention.
Fig. 12 is an external view showing a coaxial cable connector according to a third embodiment of the present invention.
Fig. 13 is an exploded perspective view showing a coaxial cable connector according to a third embodiment of the present invention.
Fig. 14 is a sectional view showing a coaxial terminal of a coaxial cable connector according to a third embodiment of the present invention.
Fig. 15 is a perspective view showing a mating connector corresponding to the coaxial cable connector according to the first embodiment or the second embodiment of the present invention.
Fig. 16 is a sectional view showing the mating connector in fig. 15.
Fig. 17 is a perspective view showing a shield shell of the mating connector in fig. 15.
(symbol description)
1. 71, 81 connectors;
11. 82 a coaxial terminal;
12. 83 a center conductor;
13. 84 a center contact portion;
14 an inner conductor barrel portion (inner conductor connecting portion);
16. 85 an outer conductor;
17. 86 outer side fitting parts;
21 an outer conductor barrel portion;
22 a film-coated cylindrical portion;
23 an inner conductor barrel disposing section (inner conductor disposing section);
24 an intermediate wall portion;
25 an opening part;
26, clamping a fixing sheet;
31. 72 a conductive member;
32 a conductive plate portion;
33 a convex portion;
34 a dielectric sheet;
35L, 75L left plate portions;
right plate portions 35R, 75R;
37 contact piece (contact portion);
38L left side support portion;
38R right side support portion;
39. 77 an external connection;
40 connecting the barrel part;
a notch 41;
43. 87 outer shell.
Detailed Description
(first embodiment)
Fig. 1 shows a coaxial cable connector 1 according to a first embodiment of the present invention. Fig. 2 shows the connector 1 in an exploded state. In the following embodiments, the direction in which the connector 1 is inserted into the insertion hole 129 of the mating connector 121 (see fig. 15) is referred to as a "connector insertion direction", and the direction opposite to the above direction is referred to as a "connector withdrawal direction". An arrow In fig. 1 and the like indicates a connector insertion direction, and an arrow Out indicates a connector withdrawal direction. In the connector 1, the front side in the connector insertion direction is set as front, the near side is set as rear, and the upper, lower, left, and right sides follow arrows shown in the lower right of fig. 1 to 9. Arrows U, D, L, R in fig. 1 to 9 indicate upper, lower, left, and right, respectively. Note that these front, rear, upper, lower, left, and right are determined for convenience of explanation.
In fig. 1, a connector 1 is a plug type connector used to be attached to an end of a coaxial cable 5. As shown in fig. 2, the connector 1 includes the coaxial terminal 11, the conductive member 31, the housing 43, and the stopper 61.
Fig. 3 shows a cross section of the connector 1 as seen in the direction of arrows III-III in fig. 1. Fig. 4 shows a cross section of the coaxial terminal 11 and the conductive member 31 as viewed from the direction of arrows IV-IV in fig. 3. Fig. 5 shows a cross section of the center conductor 12, the outer conductor 16, and the insulating member 29 of the coaxial terminal 11.
As shown in fig. 3, the coaxial terminal 11 includes: a center conductor 12; an outer conductor 16, the outer conductor 16 being provided on the outer peripheral side of the center conductor 12; and an insulating member 29, wherein the insulating member 29 is provided between the central conductor 12 and the outer conductor 16. The center conductor 12 and the outer conductor 16 are formed of a conductive material such as metal, and the insulating member 29 is formed of an insulating material such as resin.
As shown in fig. 4, the center conductor 12 has a center contact portion 13 and an inner conductor barrel portion 14 as an inner conductor connecting portion. The center contact portion 13 is a portion that is fitted with its tip end portion in a state of being elastically contacted with the center conductor 123 of the coaxial terminal 122 of the mating connector 121. The center contact portion 13 is disposed on the tip end side of the center conductor 12. In the present embodiment, the center contact portion 13 is of a female type and is formed in a cylindrical shape. The inner conductor barrel portion 14 is a portion to which the inner conductor 6 of the coaxial cable 5 is crimped and connected. The inner cylindrical conductor portion 14 is disposed on the rear end side of the center conductor 12. The shape of the inner conductor barrel portion 14 is opened in a substantially U shape before the inner conductor 6 is crimped, but is compressed into a substantially plate shape after the crimping.
The outer conductor 16 has an outer fitting portion 17, an outer conductor cylindrical portion 21, a covering cylindrical portion 22, and an inner conductor cylindrical arrangement portion 23 as an inner conductor arrangement portion. The outer fitting portion 17 is a portion to be fitted to the outer conductor 124 of the coaxial terminal 122 of the mating connector 121. The outer fitting portion 17 is disposed on the tip end side of the outer conductor 16 and on the outer peripheral side of the center contact portion 13. The outer conductor barrel portion 21 is a portion to which the outer conductor 7 of the coaxial cable 5 is crimped and connected. The outer conductor barrel portion 21 is disposed at the rear of the outer conductor 16. The covering tube portion 22 is a portion for crimping and fixing the outer conductor 16 to the insulating cover 9 of the coaxial cable 5. The covering tube portion 22 is disposed on the outer conductor 16 rearward of the outer conductor tube portion 21, i.e., at the rear end of the outer conductor 16.
The inner conductor barrel arrangement portion 23 is arranged between the outer fitting portion 17 and the outer conductor barrel portion 21. The inner conductor barrel portion 14 of the center conductor 12 is disposed inside the inner conductor barrel disposing portion 23. The inner conductor tube arrangement portion 23 has a pair of left and right intermediate wall portions 24, the pair of intermediate wall portions 24 connecting the outer fitting portion 17 and the outer conductor tube portion 21, and the inner conductor tube arrangement portion 23 has a substantially rectangular box shape. As shown in fig. 4, the pair of intermediate wall portions 24 are disposed on the left and right sides of the inner conductor tube portion 14, respectively. Further, in the inner conductor barrel arrangement portion 23, a pair of opening portions 25 are formed on one side and the other side in the radial direction of the coaxial terminal 11, and the pair of opening portions 25 open the inside of the inner conductor barrel arrangement portion 23 to the outside of the inner conductor barrel arrangement portion 23. Specifically, as shown in fig. 3, the pair of openings 25 are formed in the upper and lower portions of the inner conductor tube disposing portion 23, respectively. Further, a space penetrating the inner conductor barrel arrangement portion 23 in the vertical direction (the opposing direction) is formed in the inner conductor barrel arrangement portion 23 by the pair of opening portions 25. In the present embodiment, these openings 25 are jig tool insertion openings for inserting a tool for crimping and connecting the inner conductor 6 into the inner conductor barrel arrangement portion 23. The left and right sides of the inner conductor tube portion 14 are covered with the intermediate wall portions 24 of the outer conductor 16, respectively, but the upper and lower portions of the inner conductor tube disposing portion 23 are formed with the opening portions 25, respectively, and therefore the upper and lower sides of the inner conductor tube portion 14 are not covered with the outer conductor 16.
As shown in fig. 2 and 5, a locking piece 26 is formed at the rear part of each intermediate wall portion 24, and the locking piece 26 protrudes downward from the part. The pair of left and right locking pieces 26 are respectively locked to a pair of notches 41 (see fig. 6), and the pair of notches 41 are formed in the rear portion of the conductive plate portion 32.
As shown in fig. 5, in the outer conductor 16, a recessed portion 27 is formed between the inner conductor barrel arrangement portion 23 and the outer conductor barrel portion 21. That is, in the outer conductor 16, the outer surface of the portion between the inner conductor barrel arrangement portion 23 and the outer conductor barrel portion 21 is curved so as to be raised upward, and as a result, the inner surface of the portion facing downward is recessed. The recessed portion is a recessed portion 27. When a unit formed by coupling the center conductor 12 and the insulating member 29 is incorporated into the outer conductor 16 in manufacturing the connector 1, the unit can be incorporated into the outer conductor 16 in a state where the axial position of the unit coincides with the axial position of the outer conductor 16 by using the space formed by the recessed portion 27. This facilitates the operation of mounting the unit to the outer conductor 16.
Fig. 6 shows the conductive member 31. Fig. 7 shows a cross section of the conductive member 31 viewed from the direction of arrows VII-VII in fig. 4. Fig. 8 and 9 show the mounting of the conductive member 31 to the coaxial terminal 11. The conductive member 31 is a member mainly having a function of adjusting the impedance of the peripheral portion of the inner conductor barrel portion 14 and a function of removing high-frequency noise in cooperation with the shield shell 131 of the mating connector 121.
As shown in fig. 3, 4, 8, 9, and the like, the conductive member 31 is attached to the inner conductor tube disposing portion 23 of the outer conductor 16. As shown in fig. 6 and 7, the conductive member 31 has: a conductive plate portion 32, the conductive plate portion 32 extending in the front-rear direction and the left-right direction; a dielectric sheet 34, the dielectric sheet 34 being provided on a part of the conductive plate portion 32; a left plate portion 35L, the left plate portion 35L rising from a left portion of the conductive plate portion 32; a right plate portion 35R, the right plate portion 35R rising from a right portion of the conductive plate portion 32; and a connection cylindrical portion 40, the connection cylindrical portion 40 being connected to a rear portion of the conductive plate portion 32. The conductive member 31 except for the dielectric sheet 34 is formed of a conductive material. Specifically, the above-described portions are formed by, for example, performing press working and bending working on a metal plate material.
The conductive plate portion 32 is disposed below the inner conductor barrel disposition portion 23 and on the outer conductor 16, and covers the opening 25 formed in the lower portion of the inner conductor barrel disposition portion 23 from below. As shown in fig. 6, a convex portion 33 projecting upward in a plate shape is formed at the center of the conductive plate portion 32 when the conductive plate portion 32 is viewed from above. As shown in fig. 7, the convex portion 33 enters the inner conductor barrel arrangement portion 23 through the opening 25 formed in the lower portion of the inner conductor barrel arrangement portion 23, and the upper end portion (protruding end portion) of the convex portion 33 comes close to the inner conductor barrel portion 14.
The dielectric sheet 34 is made of a dielectric material such as resin. The dielectric sheet 34 is provided between the conductive member 31 and the inner conductor tube portion 14. Specifically, dielectric sheet 34 is disposed at the middle of the upper end of convex portion 33 in the left-right direction. Further, the dielectric sheet 34 is integrally formed with the conductive member 31. Specifically, the dielectric sheet 34 is formed in a plate shape extending in the front-rear direction at the upper end portion of the convex portion 33 of the conductive plate portion 32, and forms a microstrip line structure together with the inner conductor tube portion 14 and the outer conductor tube portion 21. This makes it possible to easily realize impedance matching.
The left plate portion 35L extends upward from the left end portion of the conductive plate portion 32, and is disposed between the left intermediate wall portion 24 of the inner conductor tube disposing portion 23 and the left wall 48L of the housing 43. The right plate portion 35R extends upward from the right end of the conductive plate portion 32, and is disposed between the intermediate wall portion 24 on the right side of the inner conductor tube disposition portion 23 and the right wall 48R of the housing 43.
Further, a fixing portion 36 is provided on the upper end side of each of the left plate portion 35L and the right plate portion 35R, and the fixing portion 36 is used to fix the conductive member 31 to the inner conductor tube disposing portion 23. As shown in fig. 7, the fixing portion 36 of the left plate portion 35L is bent in the right direction, whereby the left intermediate wall portion 24 is sandwiched between the left portion of the conductive plate portion 32 and the fixing portion 36. Similarly, the fixing portion 36 of the right plate portion 35R is bent in the left direction, whereby the right intermediate wall portion 24 is sandwiched between the right portion of the conductive plate portion 32 and the fixing portion 36. Thereby, the conductive member 31 is fixed to the inner conductor tube disposing portion 23. Fig. 6 shows a state in which each fixing portion 36 is not bent.
Further, a contact piece 37 is provided on the left plate portion 35L, and the contact piece 37 contacts the outer surface of the left intermediate wall portion 24, and a contact piece 37 is provided on the right plate portion 35R, and the contact piece 37 contacts the outer surface of the right intermediate wall portion 24. The conductive member 31 is electrically connected to the outer conductor 16 through the pair of contact pieces 37. The left contact piece 37 protrudes rightward from the left plate portion 35L, and is pressed against the outer surface of the left intermediate wall portion 24 while being in contact with the outer surface in an elastically deformed state. Similarly, the right contact piece 37 protrudes leftward from the right plate portion 35R, and is pressed by the outer surface of the right intermediate wall portion 24 while being in contact with the outer surface in an elastically deformed state.
As shown in fig. 6, the left plate portion 35L is provided with a pair of left side support portions 38L, and the left plate portion 35L is supported between the left intermediate wall portion 24 and the left wall 48L of the housing 43 by the pair of left side support portions 38L. One left side support portion 38L of the pair of left side support portions 38L is disposed at the front end portion of the left plate portion 35L. The left side support portion 38L supports the left plate portion 35L between the left intermediate wall portion 24 and the left wall 48L of the housing 43 at a position forward of the contact piece 37 provided on the left plate portion 35L. The other left side support portion 38L of the pair of left side support portions 38L is disposed at the rear end portion of the left plate portion 35L. The left side support portion 38L supports the left plate portion 35L between the left intermediate wall portion 24 and the left wall 48L of the housing 43 at a position rearward of the contact piece 37 provided on the left plate portion 35L. As shown in fig. 7, the separation distance between the left intermediate wall portion 24 and the left wall 48L of the housing 43 is larger than the thickness of the left plate portion 35L. In the present embodiment, the left surface of the left plate portion 35L is in contact with the right surface of the left wall 48L of the housing 43. Further, each left side support portion 38L protrudes rightward from the left plate portion 35L, and the protruding end side of each left side support portion 38L contacts the left surface of the left intermediate wall portion 24.
Similarly, a pair of right side support portions 38R are formed in the right plate portion 35R, and the right plate portion 35R is supported between the right middle wall portion 34 and the right wall 48R of the housing 43 by the pair of right side support portions 38R. One right side support portion 38R of the pair of right side support portions 38R is disposed at the front end portion of the right plate portion 35R. The right side support portion 38R supports the right plate portion 35R between the right middle wall portion 24 and the right wall 48R of the housing 43 at a position forward of the contact piece 37 provided on the right plate portion 35R. The other right side support portion 38R of the pair of right side support portions 38R is disposed at the rear end portion of the right plate portion 35R. The right side support portion 38R supports the right plate portion 35R between the right middle wall portion 24 and the right wall 48R of the housing 43 at a position rearward of the contact piece 37 provided on the right plate portion 35R. The distance of separation between the right intermediate wall portion 24 and the right wall 48R of the housing 43 is larger than the thickness of the right plate portion 35R. In the present embodiment, the right surface of the right plate portion 35R is in contact with the left surface of the right wall 48R of the housing 43. Further, each right side support portion 38R protrudes leftward from the right plate portion 35R, and the protruding end side of each right side support portion 38R contacts the right surface of the right middle wall portion 24.
Further, a pair of external connection portions 39 are provided on the left plate portion 35L and the right plate portion 35R, respectively, and the pair of external connection portions 39 are used to electrically connect the shield shell 131 (see fig. 17) provided in the mating connector 121 and the conductive member 31. As shown in fig. 6, the left plate portion 35L is formed in a plate shape elongated in the front-rear direction and the up-down direction, and the left surface of the left plate portion 35L is a flat surface. The left surface of the left plate portion 35L is one external connection portion 39. Similarly, the right plate portion 35R is formed in a plate shape elongated in the front-rear direction and the up-down direction, and the right surface of the right plate portion 35R is a flat surface. The right surface of the right plate portion 35R is the other external connection portion 39. As shown in fig. 1 and the like, the housing 43 has connection holes 49 formed in the left wall 48L and the right wall 48R, respectively, and the left and right external connection portions 39 face the outside of the housing 43 through the connection holes 49. When the connector 1 is inserted into the insertion opening 129 of the mating connector 121, a pair of left and right housing connection pieces 132 provided in the shield housing 131 of the mating connector 121 contact the external connection portion 39 via the connection holes 49, respectively.
As shown in fig. 8 and 9, the connection cylindrical portion 40 is a portion for pressure-connecting the conductive member 31 to the outer conductor 16. As shown in fig. 6, a part of the conductive plate portion 32 is elongated rearward, and a connecting cylinder portion 40 is formed on the rear end side of the part. As shown in fig. 3, the connection cylindrical portion 40 is press-connected between the inner conductor cylindrical portion 23 and the outer conductor cylindrical portion 21 of the outer conductor 16. Specifically, the connection cylindrical portion 40 is firmly connected to the outer surface of the bulge corresponding to the depressed portion 27 of the outer conductor 16 by caulking. The conductive member 31 is fixed to the outer conductor 16 by the connection cylindrical portion 40, and the conductive member 31 and the outer conductor 16 are electrically connected at a position away from the inner conductor cylindrical portion 14.
As shown in fig. 6, a pair of notches 41 are formed in the left and right rear portions of the conductive plate portion 32, the pair of notches 41 lock the pair of locking pieces 26, and the pair of locking pieces 26 are formed in the intermediate wall portion 24 of the inner conductor tube disposing portion 23 of the outer conductor 16. As is apparent from fig. 8 and 9, the locking pieces 26 enter the notches 41 and are locked.
The housing 43 shown in fig. 1 is formed of an insulating material such as resin into a cylindrical shape having a substantially quadrangular cross section. A connector fitting portion 44 is formed at the front of the housing 43, and the connector fitting portion 44 is fitted in the housing 128 of the mating connector 121. The connector fitting portion 44 has an outer peripheral portion formed with projections and recesses corresponding to the projections and recesses of the erroneous insertion preventing portion 130, and the erroneous insertion preventing portion 130 is provided in the insertion port 129 of the mating connector 121. A grip portion 45 is formed at the rear of the housing 43, and the grip portion 45 is used by a user to grip the connector 1 when inserting and removing the connector 1 into and from the mating connector 121.
As shown in fig. 3, the housing 43 accommodates the coaxial terminal 11. A terminal insertion port 46 is formed at the distal end of the housing 43, and the distal end side of the coaxial terminal 122 (see fig. 15) of the mating connector 121 is inserted into the terminal insertion port 46. The center contact portion 13 of the center conductor 12 and the outer fitting portion 17 of the outer conductor 16 of the coaxial terminal 11 are disposed at the front end portion inside the housing 43, and face the outside of the housing 43 from the terminal insertion port 46. Further, at the rear end portion of the housing 43, the coaxial terminal 11 is fitted into the housing 43, or an insertion hole 47 is formed, the insertion hole 47 being used to pass the coaxial cable 5 therethrough, the coaxial cable 5 being attached to the coaxial terminal 11 fitted into the housing 43.
Further, as shown in fig. 1, a connection hole 49 is formed in the right wall 48R of the housing 43, and the connection hole 49 is used to make the right external connection portion 39 of the conductive member 31 face the outside of the housing 43. Also, a connection hole 49 is formed in the left wall 48L of the housing 43, and the connection hole 49 is used to make the outer connection portion 39 on the left side of the conductive member 31 face the outside of the housing 43.
A lance 50 is provided in an upper portion of the inside of the housing 43, and the lance 50 supports the coaxial terminal 11 in the housing 43. The lance 50 is disposed at the center in the left-right direction of the upper portion of the housing 43, extends in the front-rear direction as shown in fig. 3, and has a locking projection 50A formed at the lower end of the front end thereof, the locking projection 50A being in contact with the upper rear end of the outer fitting portion 17.
Here, in the connector 1, the position of the contact spring portion 18 is set in consideration of the position of the locking projection 50A of the lance portion 50, in such a manner that the contact spring portion 18 is provided in the outer fitting portion 17 of the outer conductor 16 of the coaxial terminal 11. That is, as shown in fig. 2 and 5, three contact spring portions 18 are formed in the outer fitting portion 17 of the outer conductor 16 so as to be spaced apart by 120 degrees in the circumferential direction, and the three contact spring portions 18 are used to make contact with the outer conductor 124 of the coaxial terminal 122 of the mating connector 121. The three contact spring portions 18 are arranged so as to avoid the center in the left-right direction of the upper portion of the outer fitting portion 17. Specifically, in order to dispose the three contact spring portions 18 so as to avoid the center in the left-right direction of the upper portion of the outer fitting portion 17, the metal plate material forming the outer fitting portion 17 is set such that: the length of one side before bending into a cylindrical shape is about 2 times the length of the other side, and the position of the abutting surface 19 is shifted from the center of the upper surface. By disposing the three contact spring portions 18 so as to avoid the center in the left-right direction of the upper portion of the outer fitting portion 17, it is possible to prevent the contact spring portions 18 from colliding with the locking projections 50A of the lance portions 50 and deforming the contact spring portions 18 when the coaxial terminal 11 is inserted into the housing 43 from the insertion opening 47.
As shown in fig. 3, a stopper receiving portion 51 for receiving the stopper 61 and a stopper locking hole 52 for locking the stopper 61 are provided on the lower side of the rear portion of the housing 43.
Here, as shown in fig. 2, the stopper 61 includes: a mounting portion 62, the mounting portion 62 being inserted into the stopper receiving portion 51 and mounted in the housing 43; a pair of restricting portions 63 for restricting the locking pieces 26 of the coaxial terminals 11 from coming off the coaxial terminals 11 in a state where the mounting portions 62 are inserted into the stopper receiving portions 51; and a cable support portion 64 for supporting the coaxial cable 5 at the rear of the housing 43 in a state where the attachment portion 62 is inserted into the stopper housing portion 51. Further, a projecting piece 65 (see fig. 3) is formed on the rear lower surface of the mounting portion 62, and the projecting piece 65 is locked in the stopper locking hole 52. Further, the upper surface of the cable support portion 64 of the stopper 61 is curved to conform to the circular outer shape of the coaxial cable 5. The bent upper surface of the cable support portion 64 can suppress the coaxial cable 5 from being sharply and largely bent leftward or rightward directly behind the housing 43. Thus, by the above-described bending of the coaxial cable 5, it is possible to prevent a large force from being applied to the outer conductor 16.
Further, a lock mechanism 53 is provided on the upper portion of the housing 43, and the lock mechanism 53 is used to fix the connector 1 to the mating connector 121. The lock mechanism 53 has: a beam portion 54, the beam portion 54 extending in the front-rear direction, and both end portions being supported by an upper portion of the housing 43; a protrusion 55, the protrusion 55 protruding upward from the upper surface of the beam 54; and an unlocking portion 56, the unlocking portion 56 being formed on the upper surface of the beam portion 54 and located behind the locking protrusion portion 55. The locking protrusion 55 can be displaced in the vertical direction by elastic deformation of the beam portion 54. When the connector 1 is inserted into the mating connector 121, the beam portion 54 is inserted into the beam receiving portion 135 (see fig. 16) of the mating connector 121, and the lock projection 55 is locked in the lock hole 136 of the mating connector 121. By pressing the unlocking portion 56 downward, the locking protrusion 55 can be removed from the locking hole 136. Rib 57 is formed on the upper surface of the rear portion of beam portion 54. The rib 57 can increase the elastic force of the beam 54, and improve the reliability of fitting and fixing of the connector 1 and the mating connector 121 by the lock mechanism 53.
Fig. 15 to 17 show the mating connector 121. Specifically, fig. 15 shows an external appearance of the mating connector 121, fig. 16 shows a cross section of a left side portion of the mating connector 121 divided into left and right sides along a center in the left-right direction, and fig. 17 shows the shield shell 131 of the mating connector 121. In the mating connector 121, the front side in the connector insertion direction is referred to as front, and the front side is referred to as rear, and the up, down, left, and right directions follow arrows shown in the lower right of fig. 15 to 17. Arrows U, D, L, R in fig. 15 to 17 indicate upper, lower, left, and right, respectively. Note that these front, rear, upper, lower, left, and right are determined for convenience of explanation.
As shown in fig. 15 and 16, the mating connector 121 is a receptacle connector used by being mounted on a substrate, and includes a coaxial terminal 122, a housing 128, and a shield shell 131.
The coaxial terminal 122 has: a center conductor 123 as a mating center conductor; an outer conductor 124 as a mating outer conductor provided on the outer peripheral side of the center conductor 123; and an insulating member 125, wherein the insulating member 125 is provided between the central conductor 123 and the outer conductor 124. In the present embodiment, the central conductor 123 is a male type. The central conductor 123 has a circuit connection portion 126, and the circuit connection portion 126 is used to connect the central conductor 123 to, for example, a signal circuit of a substrate. The outer conductor 124 has a circuit connection portion 127, and the circuit connection portion 127 is used to connect the outer conductor 124 to a ground circuit of a substrate.
The housing 128 is formed of an insulating material such as resin, and is formed in a tubular shape having a substantially quadrangular cross section. The coaxial terminal 122 is accommodated in the rear part of the housing 128, and an insertion opening 129 is formed at the front end of the housing 128. Further, an erroneous insertion preventing portion 130 is formed in the insertion port 129, and the erroneous insertion preventing portion 130 has a predetermined uneven shape.
The shield case 131 is formed of a conductive material such as metal and provided on the outer circumferential side of the housing 128. A pair of left and right case connection pieces 132 are provided at the front end of the shield case 131. The case connection piece 132 protrudes toward the inside of the case 128 via insertion holes 137, which are formed in the left and right walls of the case 128, respectively. Further, a circuit connection portion 133 is provided in the shield case 131, and the circuit connection portion 133 is used to connect the shield case 131 to a ground circuit of a substrate.
When the connector 1 and the mating connector 121 are used, the coaxial cable 5 is mounted on the connector 1 in the manner shown in fig. 3. The mating connector 121 is mounted on a substrate, and the center conductor 123 of the mating connector 121 is connected to a signal circuit of the substrate via a circuit connection portion 126. The outer conductor 124 of the mating connector 121 is connected to the ground circuit of the substrate via the circuit connecting portion 127. Further, the shield case 131 of the mating connector 121 is connected to the ground circuit of the substrate via the circuit connecting portion 133.
When the connector fitting portion 44 of the connector 1 is inserted into the insertion opening 129 of the mating connector 121 and the connector fitting portion 44 is pushed into the depth of the shell 128 of the mating connector 121, the locking protrusion 55 of the locking mechanism 53 of the connector 1 enters the locking hole 136 of the mating connector 121, so that the connector 1 is fixed to the mating connector 121. In the above state, the central conductor 12 of the coaxial terminal 11 of the connector 1 and the central conductor 123 of the coaxial terminal 122 of the mating connector 121 are fitted to each other, and the two central conductors 12 and 123 are electrically connected to each other. Thereby, the inner conductor 6 of the coaxial cable 5 is electrically connected to the signal circuit of the substrate. The outer conductor 16 of the coaxial terminal 11 of the connector 1 and the outer conductor 124 of the coaxial terminal 122 of the mating connector 121 are fitted to each other, and the two outer conductors 16 and 124 are electrically connected to each other. Thereby, the outer conductor 7 of the coaxial cable 5 is connected to the ground circuit of the substrate.
Further, in a state where the connector 1 is fixed to the mating connector 121 as described above, the pair of housing connection pieces 132 of the mating connector 121 are respectively brought into contact with the pair of external connection portions 39 of the connector 1. Thereby, the conductive member 31 of the connector 1 is connected to the ground circuit of the substrate via the shield case 131. Further, in the coaxial terminal 11 of the connector 1, the entire central conductor 12 enters the inside of the shield shell 131, and in the outer conductor 16 of the coaxial terminal 11 of the connector 1, the entire outer fitting portion 17 and the entire inner conductor barrel arrangement portion 23 enter the inside of the shield shell 131. A portion of coaxial terminal 11 of connector 1 that enters inside of shield shell 131 is shielded by shield shell 131. This suppresses the emission of noise from the central conductors 12, 123, etc., or the mixing of noise into the central conductors 12, 123, etc.
As described above, in the connector 1 according to the embodiment of the present invention, the conductive member 31 is electrically connected to the outer conductor 16 via the pair of contact pieces 37, and the convex portion 33 formed in the conductive plate portion 32 enters the inner conductor barrel arrangement portion 23 from the opening portion 25 and approaches the inner conductor barrel portion 14. This makes it possible to easily adjust the impedance of the peripheral portion of the inner cylindrical conductor portion 14. Therefore, the characteristic impedance of the connector 1 can be easily matched with the characteristic impedance of the coaxial cable 5, the characteristic impedance of the mating connector 121, and the like.
Further, by forming the convex portion 33 in the conductive plate portion 32 and making the protruding end side of the convex portion 33 enter the inside of the inner conductor barrel disposing portion 23 from the opening portion 25, the convex portion 33 of the conductive member 31 can be brought close to the inner conductor barrel portion 14, in which the inner conductor barrel portion 14 is disposed in a narrow space inside the inner conductor barrel disposing portion 23.
In the connector 1 according to the embodiment of the present invention, the dielectric sheet 34 is provided between the convex portion 33 of the conductive plate portion 32 and the inner cylindrical conductor portion 14. The contact between the inner cylindrical conductor portion 14 and the convex portion 33 of the conductive plate portion 32 can be prevented by the dielectric sheet 34. Further, the impedance of the peripheral portion of the inner cylindrical conductor portion 14 can be adjusted by the dielectric sheet 34.
Further, the dielectric sheet 34 is formed on the convex portion 33 of the conductive plate portion 32. This enables the dielectric sheet 34 and the conductive member 31 to be formed integrally and to be a single component. This reduces the number of parts of the connector 1 and the number of man-hours for assembling the connector 1.
In the connector 1 according to the embodiment of the present invention, the conductive member 31 has a pair of contact pieces 37, and the pair of contact pieces 37 contact the pair of intermediate wall portions 24 of the inner conductor barrel arrangement portion 23. This makes it possible to easily electrically connect the conductive member 31 and the outer conductor 16.
Further, in the connector 1 of the embodiment of the present invention, the conductive member 31 has: a pair of left side support portions that support the left plate portion 35L between the left intermediate wall portion 24 and the left wall 48L of the housing 43 at positions on the front and rear sides of the contact piece 37 provided on the left plate portion 35L; and a pair of right side supporting portions 38R, the pair of right side supporting portions 38R supporting the right plate portion 35R between the right middle wall portion 24 and the right wall 48R of the housing 43 at positions on the front side and the rear side of the contact piece 37 provided on the right plate portion 35R. The conductive member 31 and the inner conductor tube disposing part 23 are supported between the left wall 48L and the right wall 48R of the housing 43 at four positions, front, rear, left, and right, by the pair of left side supporting parts 38L and the pair of right side supporting parts 38R. This can suppress the conductive member 31 and the inner conductor tube disposing part 23 from moving in the housing 43. That is, when the coaxial cable 5 attached to the connector 1 is largely bent to the left or right directly behind the connector 1, an external force that attempts to bend the rear portion of the outer conductor 16 to the left or right acts on the outer conductor 16. Even if such an external force acts on the outer conductor 16, the conductive member 31 and the inner conductor tube disposing portion 23 are supported between the left wall 48L and the right wall 48R of the housing 43 at four locations, front, rear, left, and right, and therefore, the conductive member 31 and the inner conductor tube disposing portion 23 are prevented from moving between the left wall 48L and the right wall 48R of the housing 43.
When the conductive member 31 and the inner conductor tube disposition portion 23 move between the left wall 48L and the right wall 48R of the housing 43, the position of the conductive member 31 relative to the inner conductor tube disposition portion 23 changes, and the distance between the left plate portion 35L of the conductive member 31 and the left intermediate wall portion 24 of the inner conductor tube disposition portion 23 or the distance between the right plate portion 35R of the conductive member 31 and the right intermediate wall portion 24 of the inner conductor tube disposition portion 23 may change. When such a change occurs, the contact piece 37 provided in the left plate portion 35L or the right plate portion 35R may be separated from the opposing intermediate wall portion 24 or may be pressed against the intermediate wall portion 24. As a result, contact failure of the contact piece 37 or breakage of the contact piece 37 may occur. In the connector 1, the movement of the conductive member 31 and the inner conductor barrel arrangement portion 23 is suppressed by the pair of left side support portions 38L and the pair of right side support portions 38R, and the contact failure of the contact piece 37 and the breakage of the contact piece 37 can be prevented. Further, by disposing the contact pieces 37 between the front and rear left side support portions 38L and between the front and rear right side support portions 38R, the amount of movement of each contact piece 37 due to the movement of the conductive member 31 and the inner conductor tube disposing portion 23 can be reduced. This can improve the effect of preventing contact failure of the contact piece 37 and breakage of the contact piece 37.
In the connector 1 according to the embodiment of the present invention, the pair of locking pieces 26 are locked to the pair of notches 41, wherein the pair of locking pieces 26 are formed in the pair of intermediate wall portions 24 of the inner conductor housing arrangement portion 23, respectively, and the pair of notches 41 are formed in the rear portion of the conductive plate portion 32 of the conductive member 31. This can suppress the positional displacement of the conductive member 31 in the front-rear direction with respect to the inner conductor barrel arrangement portion 23.
Further, in the connector 1 of the embodiment of the present invention, the connection holes 49 are formed in the left wall 48L and the right wall 48R of the housing 43, respectively, and the pair of external connection portions 39 provided to the conductive member 31 face the outside of the housing 43 via the connection holes 49. Thus, when the connector 1 is inserted into the mating connector 121, the respective external connection portions 39 can be brought into contact with the respective housing connection pieces 132 of the shield housing 131 of the mating connector 121, and the conductive member 31 can be electrically connected to the shield housing 131 of the mating connector 121. Here, fig. 10 shows a circuit formed by the outer conductor 7 of the coaxial cable 5, the outer conductor 16 of the connector 1, the conductive member 31, the outer conductor 124 of the mating connector 121, the shield case 131, and a ground circuit of the substrate. As shown in fig. 10, by electrically connecting the conductive member 31 to the shield case 131 via the external connection portions 39, a second electrical path (a-b-c-e-f-g) can be formed in addition to the first electrical path (a-b-c-d) in which the outer conductor 16 of the connector 1 is connected to the ground circuit of the board via the outer conductor 124 of the mating connector 121, and the second electrical path (a-b-c-e-f-g) in which the outer conductor 16 of the connector 1 is connected to the ground circuit of the board via the contact pieces 37 of the conductive member 31, the external connection portions 39, and the shield case 131. By the second electrical path, noise can be removed from the outer conductor 16.
In the connector 1, the connection cylindrical portion 40 formed in the conductive member 31 is connected between the inner conductor cylindrical portion 23 and the outer conductor cylindrical portion 21 of the outer conductor 16. Therefore, the conductive member 31 is electrically connected to the shield shell 131 via the external connection portions 39, whereby a third electrical path (a-b-e-f-g) can be formed in which the outer conductor 16 of the connector 1 is connected to the ground circuit of the substrate via the connection cylindrical portion 40, the external connection portions 39, and the shield shell 131. Noise can also be removed from the outer conductor 16 through the third electrical path. In particular, a branch point b branching from the outer conductor 16 of the third electrical path is located farther from the inner cylindrical conductor portion 14 than a branch point c branching from the outer conductor 16 of the second electrical path. Thus, by forming the third electrical path, noise transmitted from the coaxial cable 5 through the outer conductor 16 can be removed before the noise is mixed from the inner conductor cylindrical portion 14 into the center conductor 12, and the noise removal performance can be improved.
(second embodiment)
Fig. 11 shows a coaxial cable connector 71 according to a second embodiment of the present invention. In the connector 71 in fig. 11, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted. As shown in fig. 11, in the connector 71, the conductive member 72 includes an inner conductive member 73 and an outer conductive member 74.
The inner conductive member 73 is disposed inside the inner conductor barrel disposing portion 23 of the outer conductor 16, and a part of the inner conductive member 73 is close to the inner conductor barrel portion 14. The insulating member 8 and the outer conductor 7 of the coaxial cable 5 slightly enter the inner conductor cylinder arrangement portion 23 from the rear of the inner conductor cylinder arrangement portion 23, and the end portions of the insulating member 8 and the outer conductor 7 are positioned inside the inner conductor cylinder arrangement portion 23 and behind the inner conductor cylinder portion 14. The inner conductive member 73 is electrically connected to an end of the outer conductor 7, wherein the inner conductive member 73 is disposed inside the inner conductor tube disposition portion 23, and the outer conductor 7 is disposed inside the inner conductor tube disposition portion 23.
The outer conductive member 74 is attached to the outer peripheral side of the inner conductor barrel arrangement portion 23. A pair of contact portions 76 are provided on the left plate portion 75L and the right plate portion 75R of the outer conductive member 72. The left contact portion 76 projects rightward (inward) from the right surface (inner surface) of the left plate portion 75L, and the right contact portion 76 projects leftward (inward) from the left surface (inner surface) of the right plate portion 75R. When the outer conductive member 74 is attached to the outer peripheral side of the inner conductor barrel arrangement portion 23, these contact portions 75 are in contact with the left and right intermediate wall portions 24 of the inner conductor barrel arrangement portion 14. Further, the outer connecting portions 77 are formed on the left surface (outer surface) of the left plate portion 75L and the right surface (outer surface) of the right plate portion 75R of the outer conductive member 74, respectively. Each external connection portion 77 is in contact with the housing connection piece 132 of the mating connector 121. Further, a pair of contact tabs 78 are provided at the rear of the outer conductive member 74. When the outer conductive member 74 is attached to the outer peripheral side of the inner conductor barrel arrangement portion 23, the contact piece 78 is in contact with a portion of the outer conductor 16 between the outer conductor barrel portion 21 and the inner conductor barrel arrangement portion 23. In addition, reference numeral 79 in fig. 11 is a stopper.
The connector 71 according to the second embodiment of the present invention can also provide substantially the same operational advantages as those of the first embodiment of the present invention.
(third embodiment)
Fig. 12 to 14 show a coaxial cable connector 81 according to a third embodiment of the present invention. Specifically, fig. 12 shows an external appearance of the connector 81, fig. 13 shows a state in which the connector 81 is disassembled, and fig. 14 shows a cross section obtained by cutting the coaxial terminal 82 of the connector 81 along an axis thereof. In the connector 81 shown in fig. 12 to 14, the same components as those of the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
The connector 81 shown in fig. 12 to 14 is a relay connector corresponding to the connector 1 of the first embodiment. As shown in fig. 12 and 13, a connector fitting hole 88 is formed in a front portion of the housing 87, the connector fitting hole 88 is fitted to the connector fitting portion 44 of the connector 1 according to the first embodiment, and an insertion opening 89 is formed in a distal end portion of the connector fitting hole 88. Further, a lock mechanism 90 is provided in the housing 87. As shown in fig. 14, the center contact portion 84 of the center conductor 83 of the coaxial terminal 82 has a pin-like male shape, and can be fitted in an elastically contacting state in the female center contact portion 13 of the connector 1 of the first embodiment. The outer fitting portion 86 of the outer conductor 85 of the coaxial terminal 82 has a smaller diameter than the outer fitting portion 17 of the connector 1 according to the first embodiment, and can be fitted into the outer fitting portion 17 of the connector 1 according to the first embodiment.
With the connector 81 according to the third embodiment of the present invention, as in the first embodiment of the present invention described above, the impedance of the portion around the inner cylindrical conductor portion 14 of the connector 81 can be easily adjusted by the conductive member 31 of the connector 81.
In the above embodiment, the case where the dielectric sheet 34 is molded on the conductive member 31 is exemplified, but the dielectric may be coated or formed on the upper surface of the convex portion 33 of the conductive plate portion 32.
In the above-described embodiment, a pair of left side supporting portions 38L are provided on the front and rear sides of the left side contact piece 37, and a pair of right side supporting portions 38R are provided on the front and rear sides of the right side contact piece 37, but one left side supporting portion 38L may be provided on either the front or rear side of the left side contact piece 37, and one right side supporting portion 38R may be provided on either the front or rear side of the right side contact piece 37.
In the above-described embodiment, the center contact portion 13 of the connector 1 and the center conductor 123 of the mating connector 121 are fitted to each other, but the present invention is not limited to this, and the center contact portions of the two connectors may be in contact with each other or pressed against each other. Further, the case where the inner conductor 6 of the coaxial cable 5 is crimped to the center conductor 12 of the connector 1 is exemplified, but the center conductor and the inner conductor may be crimped or welded.
The coaxial cable connector according to the present invention can be suitably used for transmission of signals having a frequency of, for example, several hundred Hz to several GHz, but can also be applied to transmission of signals having other frequencies.
The present invention can be modified as appropriate within the scope of the gist of the invention that can be read from the claims and the entire specification or without departing from the spirit, and a connector for coaxial cable accompanying such modification is also included in the technical spirit of the present invention.

Claims (8)

1. A connector for coaxial cables, comprising:
a coaxial terminal including a center conductor, an outer conductor provided on an outer peripheral side of the center conductor, and an insulating member provided between the center conductor and the outer conductor; and
a housing formed of an insulating material and housing the coaxial terminal,
the center conductor includes:
a center contact portion that is disposed on a leading end side of the center conductor and that contacts a mating center conductor of a mating connector; and
an inner conductor connecting portion disposed on a rear end side of the center conductor and connecting an inner conductor of a coaxial cable,
the outer conductor includes:
an outer fitting portion that is disposed on a leading end side of the outer conductor and that is fitted to a mating outer conductor of the mating connector;
an outer conductor cylindrical portion that is disposed on a rear end side of the outer conductor and that pressure-contacts and connects an outer conductor of the coaxial cable; and
an inner conductor arrangement portion that is arranged between the outer fitting portion of the outer conductor and the outer conductor cylindrical portion and in which the inner conductor connecting portion is arranged,
a pair of openings are formed in the inner conductor arrangement portion on one side and the other side of the coaxial terminal in a radial direction, respectively, the pair of openings opening an inside of the inner conductor arrangement portion toward an outside of the inner conductor arrangement portion,
it is characterized by comprising:
a conductive member formed of a metal, electrically connected to the outer conductor or the outer conductor, and entering the inside of the inner conductor arrangement portion from one of the pair of opening portions and approaching the inner conductor connection portion; and
a dielectric sheet provided between the conductive member and the inner conductor connecting portion,
the conductive member has a conductive plate portion that covers the one opening portion, a protruding portion that protrudes through the one opening portion into the inner conductor arrangement portion is formed in the conductive plate portion, a protruding end portion of the protruding portion is close to the inner conductor connection portion, and the dielectric sheet is provided at the protruding end portion of the protruding portion.
2. The connector for coaxial cable according to claim 1,
the dielectric sheet is formed on the conductive member.
3. The connector for coaxial cable according to claim 1 or 2,
the inner conductor arrangement portion has a pair of intermediate wall portions on both sides of the inner conductor connecting portion, the pair of intermediate wall portions connecting the outer fitting portion and the outer conductor cylindrical portion,
the conductive member has a pair of contact portions that contact respective outer surfaces of the pair of intermediate wall portions.
4. The connector for coaxial cable according to claim 3,
the one opening portion is formed at a lower portion of the inner conductor disposition portion, a pair of the intermediate wall portions are disposed at left and right sides of the inner conductor connection portion, respectively, the conductive plate portion covers the one opening portion from below,
the conductive member includes:
a left plate portion that rises from a left portion of the conductive plate portion, is disposed between the left intermediate wall portion and a left wall portion of the housing, and is provided with the contact portion that contacts an outer surface of the left intermediate wall portion;
a left side support portion formed in the left plate portion and supporting the left plate portion between the left intermediate wall portion and a left wall portion of the housing at a position on a front side or a rear side of the contact portion provided in the left plate portion;
a right plate portion that rises from a right portion of the conductive plate portion, is disposed between the right intermediate wall portion and a right wall portion of the housing, and is provided with the contact portion that contacts an outer surface of the right intermediate wall portion; and
and a right-side support portion formed in the right plate portion and supporting the right plate portion between the right intermediate wall portion and the right wall portion of the housing at a position forward or rearward of the contact portion provided in the right plate portion.
5. The connector for coaxial cable according to claim 4,
each of the intermediate wall portions has a locking piece protruding downward from the intermediate wall portion,
notches are formed in the left and right portions of the conductive plate portion, and the notches clamp the pair of clamping pieces.
6. The connector for coaxial cable according to claim 1 or 2,
the conductive member has an external connection portion for electrically connecting with a shield shell provided to the mating connector,
the housing is provided with a connection hole which causes the external connection portion to face the outside of the housing.
7. The connector for coaxial cable according to claim 6,
the conductive member has a connection cylindrical portion for connecting the conductive member to the outer conductor or the outer conductor by crimping,
the connecting cylinder portion is connected between the inner conductor arrangement portion and the outer conductor cylinder portion.
8. The connector for coaxial cable according to claim 1 or 2,
the dielectric sheet is formed into a plate shape extending in the front-rear direction, and forms a microstrip line structure together with the inner conductor connecting portion and the outer conductor cylindrical portion.
CN201811222113.0A 2017-10-20 2018-10-19 Connector for coaxial cable Active CN109698441B (en)

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JP2017203595A JP6847016B2 (en) 2017-10-20 2017-10-20 Coaxial cable connector
JP2017-203595 2017-10-20

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CN109698441B true CN109698441B (en) 2021-09-07

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Publication number Priority date Publication date Assignee Title
JP7068750B2 (en) * 2019-08-06 2022-05-17 ヒロセ電機株式会社 Connector device and connector

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JP2000208214A (en) * 1999-01-11 2000-07-28 Harness Syst Tech Res Ltd Connector structure of shielded electric wire
CN206461135U (en) * 2016-11-07 2017-09-01 江苏华兴通讯科技有限公司 A kind of connector for radio-frequency coaxial cable
CN108886223A (en) * 2016-03-23 2018-11-23 株式会社自动网络技术研究所 terminal part

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JP2604400Y2 (en) * 1993-04-30 2000-05-08 日本航空電子工業株式会社 Shield connector
JP3946096B2 (en) 2001-09-11 2007-07-18 株式会社オートネットワーク技術研究所 Shield connector
JP2011003363A (en) * 2009-06-17 2011-01-06 Hirose Electric Co Ltd Crimp terminal structure, and terminal crimping device

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Publication number Priority date Publication date Assignee Title
JP2000208214A (en) * 1999-01-11 2000-07-28 Harness Syst Tech Res Ltd Connector structure of shielded electric wire
CN108886223A (en) * 2016-03-23 2018-11-23 株式会社自动网络技术研究所 terminal part
CN206461135U (en) * 2016-11-07 2017-09-01 江苏华兴通讯科技有限公司 A kind of connector for radio-frequency coaxial cable

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CN109698441A (en) 2019-04-30
JP6847016B2 (en) 2021-03-24
KR20190044493A (en) 2019-04-30
KR102550876B1 (en) 2023-07-03

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