Background technology
The coaxial cable connector of existing superfine wire is owing to distinguish solder on the brace of data side terminal, earthy terminal with the inner conductor of many superfine wire coaxial cables, the end separately of external conductor, therefore, exist the number of working processes to increase, and realize the problem of the thin space difficulty and so between terminal.
For the reduction that realizes above-mentioned the number of working processes and the thin spaceization between terminal, also propose to have following motion.
Promptly, expose inner conductor, built-in electrical insulation coating and external conductor in proper order from the end that the connector of many superfine wire coaxial cables connects side, with the two sides of earthing strip clamping external conductor and impose solder and form the cable assembly, this cable assembly is assembled to the assigned position of housing, and the shell of the outer circumferential side that is installed on housing is contacted with earthing strip, with earthing strip the external conductor of many superfine wire coaxial cables is unified with shell and be electrically connected, thereby realized the reduction of the number of working processes and the thin spaceization between terminal.
Yet existence reduces the problem of height (low level) difficulty of connector and so on.
The inventor has proposed coaxial cable connector as shown in Figure 9 (with reference to patent documentation 1) in order to address the above problem.
Promptly, expose inner conductor 211, built-in electrical insulation coating 212 and external conductor 213 in proper order from the end of the coaxial cable 210 of 3 superfine wires, the coaxial cable 210 of each superfine wire is disposed in the horizontal direction abreast with z (for example 0.5mm spacing), with the upper and lower surface of external conductor 213~213 with earthing strip 220,220 clampings and impose solder and form cable assembly 230.
Then, the terminal accommodation section 241~241 of connector shell 240 separately in be pressed into terminal 250 and fastening, the earthing strip 220,220 that in the earthing strip accommodation section 242 of connector shell 240, holds cable assembly 230, and solder is on the brace 251 of the terminal 250 corresponding with the inner conductor 211 of the coaxial cable 210 of each superfine wire.
Then, upper face side at terminal 250~250 embeds insulation board 260, at the outer circumferential side fixed housing 270 of connector shell 240, and make the tongue-shaped contact chip 271 and earthing strip 220,220 Elastic Contact of shell 270, thereby be electrically connected shell 270 and external conductor 213~213.
And, between the brace 251 of terminal 250 and contact chip 252 (and contact chip of object side), form first, second link piece 253,255, and make first link piece 253 from the bearing of trend of the linking part of brace 251 (the figure for direction) up for the opposite direction of the bearing of trend of contact chip 252 (among the figure for direction) down so that reduce the height of connector.
Patent documentation 1: the spy opens the 2004-259672 communique
Yet, in coaxial cable connector shown in Figure 9 200, though have and reduce the number of working processes, make thin spaceization between terminal, can reduce this feature of height of connector, but when possessing these features, but exist the coaxial cable that external diameter is bigger (for example coaxial cable of fine rule) with a connector wiring together the difficulty and so on problem.
The occasion of wiring on a connector, in order to make assembling operation easy, be necessary to make all wiring on same datum level, to arrange with the brace of terminal, if satisfy these needs and many coaxial cables that will external diameter is different with the wiring of a connector with wiring on the lug plate of terminal, then have the height dimension of connector to become big and so on problem.
And, if many different coax cable center conductor of external diameter are alignd on same datum level, and the external diameter that will only make the less coaxial cable of external diameter (for example coaxial cable of the superfine wire) coaxial cable (for example coaxial cable of fine rule) bigger with external diameter aligns, connector is maximized, and existence can't realize the problem of miniaturization and so on.
Summary of the invention
The present invention finishes in view of the above problems, its purpose be to provide a kind of many coaxial cables that make two kinds of coaxial cables that comprise that external diameter is different can be easily wiring on a connector, and can reduce the coaxial cable connector of height dimension.
The invention of first scheme is to comprise the coaxial cable connector of end wiring that manys a coaxial cable that the external diameter that is configured in side by side on the roughly the same horizontal plane is first, second coaxial cable of D1, D2 (D2 is bigger than D1), it is characterized in that possessing: connector shell; Be fixed on first, second, third terminal on the above-mentioned connector shell; Be installed on the conductivity shell in the outside of above-mentioned connector shell; And get involved the grounded parts that between the external conductor of above-mentioned first coaxial cable and above-mentioned shell, both is electrically connected, above-mentioned connector shell possesses: reach the face opening of connection side above making, and approximate horizontal ground holds first, second cable holding groove of above-mentioned first, second coaxial cable; And with the chimeric fitting portion of object side's connector that inserts towards the top from the below, above-mentioned the first terminal possesses: the brace that is connected with the center conductor of above-mentioned first coaxial cable in being received into the above-mentioned first cable holding groove; And the contact chip that is arranged on this brace continuously and when chimeric with above-mentioned object side connector, contacts with the corresponding contact site of above-mentioned object side connector, above-mentioned second terminal possesses: the brace that is connected with the center conductor of above-mentioned second coaxial cable in being received into the above-mentioned second cable holding groove; And the contact chip that is arranged on this brace continuously and when chimeric with above-mentioned object side connector, contacts with the corresponding contact site of above-mentioned object side connector, above-mentioned the 3rd terminal possesses: the brace that is connected with the external conductor of above-mentioned second coaxial cable in being received into the above-mentioned second cable holding groove; And be arranged on continuously by means of the bottom surface downside of the link piece above-mentioned first cable holding groove adjacent and the contact chip that when chimeric, contacts with the corresponding contact site of above-mentioned object side connector with above-mentioned object side connector with this brace, the horizontal plane that the upper surface of the contact chip of above-mentioned the 3rd terminal is provided in than the brace of above-mentioned the 3rd terminal leans on the last horizontal plane, above-mentioned shell possesses covering above-mentioned first, the top board of the approximate horizontal above the opening of the second cable holding groove, with above-mentioned second, the horizontal level that the horizontal level of the brace of the 3rd terminal is provided in from the brace of above-mentioned the first terminal only has distance H 1, the below of H1+H2, thus make above-mentioned first, second coaxial cable is received into above-mentioned first, gap between the inner face of the top board of above-mentioned first coaxial cable that comprises above-mentioned grounded parts in the time of in the second cable holding groove and the upper surface of above-mentioned second coaxial cable and above-mentioned shell is little.
The invention of alternative plan is in the invention of first scheme, it is characterized in that, first, second, third terminal is shaped by inserts and is provided in the assigned position of connector shell, second terminal possesses the prerotation vane on the brace that is arranged on above-mentioned second terminal continuously, above-mentioned prerotation vane possess be positioned at the roughly the same horizontal plane of the brace of above-mentioned the first terminal on horizontal part.
The invention of third party's case first or the invention of alternative plan in, making first coaxial cable is the coaxial cable of superfine wire, making second coaxial cable is the coaxial cable of fine rule, making grounded parts is the earthing strip that the top and bottom of the external conductor of the coaxial cable of many superfine wires are connected along direction one side by side, and the top board of the top and shell of above-mentioned earthing strip is connected.
The invention effect is as follows.
The invention of first scheme is owing to possessing connector shell, first, second, in the coaxial cable connector of the 3rd terminal and housing, connector shell possesses first, second cable holding groove and the fitting portion, with second, the horizontal level that the horizontal level of the brace of the 3rd terminal is provided in from the brace of the first terminal only has distance H 1, the below of H1+H2, thereby make first, second coaxial cable is received into first, gap between the inner face of the top board of first coaxial cable that comprises grounded parts in the time of in the second cable holding groove and the upper surface of second coaxial cable and shell is little, therefore, many coaxial cables of two kinds of coaxial cables that comprise that external diameter is different can easily be coupled on a connector, and can reduce height dimension (promptly realizing low level).
In addition, because first, second cable holding groove approximate horizontal ground holds first, second coaxial cable, therefore, the special processing that need not impose on first, second coaxial cable as bending can be received in first, second cable holding groove, and can impose solder on the brace of the correspondence of first, second, third terminal.
In addition, because the upper surface of the 3rd its contact chip of terminal is provided in the bottom surface downside of the first adjacent cable holding groove and promptly leans on the last horizontal plane than the horizontal plane of brace, thereby can reduce height dimension, and guarantee the height of the contact chip of the 3rd terminal, thereby can guarantee to be connected required insertion depth with object side's connector reliable chimeric.
The invention of alternative plan is in the invention of first scheme, because being shaped by inserts, first, second, third terminal is provided on the connector shell, second terminal possesses prerotation vane, with the horizontal part of prerotation vane be provided in the roughly the same horizontal plane of the brace of the first terminal on, make and carrying out in the metal pattern of connector shell shaping usefulness, disposing the datum level unanimity of first, second terminal when inserts is shaped, thereby inserts is shaped easily.
The invention of third party's case first or the invention of alternative plan in, because making first coaxial cable is the coaxial cable of superfine wire, making second coaxial cable is the coaxial cable of fine rule, possesses the earthing strip that the external conductor one with the coaxial cable of many superfine wires connects, earthing strip is provided between the top board of the coaxial cable of many superfine wires and shell, therefore, can reduce and be used for the number of working processes that the external conductor with the coaxial cable of many superfine wires is connected with shell, and can realize the thin spaceization between corresponding the first terminal.
Embodiment
Make the coaxial cable of many superfine wires of two kinds of coaxial cables that comprise that external diameter is different can be easily wiring on a connector, and can reduce height dimension.
Embodiment 1
Fig. 1 is the figure of expression conduct according to the plug connector 10 (following summary is a connector 10) of an embodiment of coaxial cable connector of the present invention, (a) is vertical view, (b) is the A-A line cutaway view of (a), (c) is the B-B line cutaway view of (a).
Fig. 2 is the exploded perspective view of Fig. 1.
In Fig. 1, Fig. 2, the 1st, as the coaxial cable of the superfine wire of an example of first coaxial cable, the 2nd, as the coaxial cable of the fine rule of an example of second coaxial cable, the 3rd, connector housing (being designated hereinafter simply as housing), 3A is a housing unit, the 4th, the first terminal, 5 is second terminals, and 6 is the 3rd terminals, the 7th, and the shell of lead, the 8th, as the earthing strip of the example between connecting portion, the 9th, cable assembly.
Coaxial cable 1,1 and 2 is provided on the roughly same horizontal plane side by side.
Coaxial cable 1,2 external diameters form D1 (for example D1=0.29mm), D2 (for example D2=0.81mm), from exposing center conductor 11,21, built-in electrical insulation coating 12,22 and external conductor 13,23 in proper order with the end of the connection side of connector 10.15, the 25th, the exterior insulation coating of coaxial cable 1,2.
The upper and lower surface of the external conductor 13,13 that cable assembly 9 is exposed 2 coaxial cables 1,1 is with earthing strip 8,8 clampings and impose solder and form.
Housing 3 is with insulating properties synthetic resin mould-forming, forms to have reduced height dimension (the roughly cuboid of the low clearance type of height=1.46mm) for example.
But thereby housing 3 be formed with make upper face side and cable connection side opening and with the opposition side of sidewall 33,34 sealing cable connection sides approximate horizontal ground holds first, second cable holding groove 31,32 of coaxial cable 1,2 and make below side opening and the fitting projection of object side's connector can be chimeric chimeric recess 35 and with the engaging recessed part 36,37 of the fastening teat fastening of object side's connector and the engaging recessed part 38,38 that is arranged at the outside of side.
It is roughly the same or a little on the lower side that the groove depth of first, second cable holding groove 31,32 forms the open upper end face of groove of upper surface when having held cable assembly 9, coaxial cable 2 and first, second cable holding groove 31,32.
Be formed with at the first cable holding groove 31 and be used for earthing strip 8,8 location of cable assembly 9 and hold, and prevent the location indentations 39,39 that cable assembly 9 comes off to the cable connection side.
First, second, third terminal 4,4,5,6 is through stamping-out conductive metal plate (for example thickness is the metallic plate of 0.1mm) and impose Bending Processing and form as Fig. 4 and shape shown in Figure 5, and when carrying out the mould-forming of housing 3, be configured in assigned position in the metal pattern, be fixed on the assigned position of housing 3 by the inserts shaping, thereby form housing unit 3A.
The first terminal 4 possesses the tabular brace 41 of the roughly rectangle that is connected with center conductor 11 solders of coaxial cable 1 and from the generally perpendicularly crooked contact chip 42 of a side end of this brace 41 downwards.
The sidewall 33 that brace 41 its parts connect housing 3 is and outstanding to the outside, and remaining most of joint face (top) exposes on the bottom surface of the close sidewall 33 of the first cable holding groove 31.
Contact chip 42 connects the bottom surface of the first cable holding groove 31, and its contact-making surface exposes along the internal face of the chimeric recess 35 of housing 3.
Second terminal 5 possesses: the tabular brace 51 of roughly rectangle that is connected with center conductor 21 solders of coaxial cable 2; From the generally perpendicularly crooked downwards contact chip 52 of a side end of this brace 51; And from the end side of brace 51 is generally perpendicularly crooked upward the ground that roughly meets at right angles after being provided with continuously is crooked and extend the prerotation vane 53 that is provided with to a side opposite with brace 51.
Prerotation vane 53 its horizontal positions in the roughly the same horizontal plane of the brace 41 of the first terminal 4 on, and it is outstanding to the outside to connect the sidewall 34 of housing 3, its vertical component effect exposes along the medial surface of sidewall 34.
Brace 51 its joint faces expose on the bottom surface of the sidewall 34 of the close second cable holding groove 32.
Contact chip 52 connects the bottom surface of the first cable holding groove 31, and its contact-making surface exposes along the internal face of the chimeric recess 35 of housing 3.
The 3rd terminal 6 possesses: the tabular brace 61 of roughly rectangle that is connected with external conductor 22 solders of coaxial cable 2; With the continuous link piece 62 that is provided with in the end of this brace 61; And the contact chip 63 that is provided with continuously with the end of this link piece 62.
Brace 61 its contact-making surfaces expose on the bottom surface of the coaxial cable connection side of the close second cable holding groove 32.
Link piece 62 possesses from the end of brace 61 upward along roughly meet at right angles the upward crooked vertical component effect 62a in ground and from the leading section of this vertical component effect 62a crooked and horizontal part 62b that extend to the adjacent first cable holding groove, the 31 sides direction side by side of first, second coaxial cable 1,2 (promptly to) in ground that roughly meets at right angles of the internal face of the second cable holding groove 32, and the major part of this horizontal part 62b is embedded in the housing 3.
Contact chip 63 promptly is positioned at the part roughly connection and forming downwards of the position of inboard coaxial cable 1 downside with meeting at right angles from the end of the horizontal part 62b of link piece 62, its contact-making surface exposes along the internal face of the chimeric recess 35 of housing 3.
Be provided in like that as mentioned above housing 3 assigned position first, second, third terminal 4,5,6 relative horizontal level as shown in Figure 5.
Be S1 promptly, if set the bottom surface of housing 3, the top of brace 41 of setting the first terminal 4 is S2 (for example being datum level), the bottom surface of setting the first cable holding groove 31 is that the face of 15 butts of exterior insulation coating of coaxial cable 1 is S3, then the brace 51 of second terminal 5 above only be positioned at above the brace 41 of the first terminal 4 separation from the below of H1 (for example H1=0.27mm), only be positioned at above the first terminal 4 braces 41 below above the brace 61 of the 3rd terminal 6 from H1+H2 (for example H1+H2=0.52mm).H1, h2, h3 form for example 0.91mm, 0.96mm, the 0.91mm height with the contact chip 42,52,63 of guaranteeing first, second, third terminal 4,5,6, exist the molding portion (insulator) of the housing 3 suitable with the thickness that is equivalent to distance h 2-h3 (for example h2-h3=0.05mm) to improve insulating properties between the bottom surface of the upper surface of the 3rd terminal 6 and the first cable holding groove 31.
Shell 7 is through stamping-out conductive metal plate and impose Bending Processing and form, and possesses: the top board 71 of top, the two sides of covering shell 3; Side plate 72,72; And the header board 73 in the outside of sidewall 33,34 sides of covering shell 3.
Thereby be formed with on the top board 71 when being fastened on shell 7 on the housing 3 and above the earthing strip 8 butt can implement splicing ear 74 with the solder of earthing strip 8.
Be formed with on the side plate 72,72 when being fastened on shell 7 on the housing 3 and the fastening of engaging recessed part 38,38 fastenings of housing 3 with inserted sheet 75,75, and be formed with and be used for the engaging recessed part 76,76 that engages with object side's connector.
Below and with Fig. 2~Fig. 5 illustrate connector 10 shown in Figure 1 assembling and with the wiring of coaxial cable 1,2.
(1) utilize the mould-forming of insulating properties synthetic resin to form housing 3.When carrying out this mould-forming, be pre-formed on the assigned position that first, second, third terminal 4,4,5,6 for the regulation shape is configured in the metal pattern, be fixed on the assigned position of housing 3 by the inserts shaping, thereby form as Fig. 2~housing unit 3A shown in Figure 4.
At this moment, because the brace 41 of the first terminal 4 and the prerotation vane 53 of second terminal 5 are provided on the roughly the same horizontal plane of housing 3, make in the metal pattern of inserts shaping usefulness datum level (for example S1) unanimity of first, second terminal 4,4,5 of configuration, thereby inserts is shaped easily.
(2) for 2 coaxial cables 1, center conductor 11, built-in electrical insulation coating 12 and external conductor 13 orders are exposed, with prescribed distance (for example being 0.5mm) configuring coaxial cable 1,1 arranged side by side on horizontal plane, its top and bottom are also fixing with splicing tape (not shown) clamping, with the upper and lower surface of external conductor 13,13 with earthing strip 8,8 clampings and impose solder (omit diagram, down with) and form cable assembly 9.
Owing to the external conductor 13 of 2 coaxial cables 1 is together imposed solder with earthing strip 8,8, therefore, can be when reducing the number of working processes the realization thin spaceization.
In addition, for coaxial cable 2 center conductor 21, built-in electrical insulation coating 22 and external conductor 23 orders are exposed.
(3) will be in above-mentioned (2) formed cable assembly 9 be received into the first cable holding groove 31 at the housing 3 of above-mentioned (1) formed housing unit 3A with the approximate horizontal state.
At this moment, the earthing strip 8,8 of cable assembly 9 is received into and finishes location and anticreep in the location indentations 39,39 of the first cable holding groove 31, and since center conductor 11,11 approximate horizontal of coaxial cable 1,1 be configured on the brace 41,41 of the first terminal 4,4, therefore, the solder of center conductor 11,11 and brace 41,41 is carried out easily.
In addition, will be in above-mentioned (2) terminal processes coaxial cable 2 be received in the second cable holding groove 32 of housing 3.
At this moment and since center conductor 21 approximate horizontal of coaxial cable 2 be configured on the brace 51 of second terminal 5, therefore, the solder of center conductor 21 and brace 51 is carried out easily.
In addition and since external conductor 23 approximate horizontal of coaxial cable 2 be configured on the brace 61 of the 3rd terminal 6, therefore, the solder of external conductor 23 and brace 61 is carried out easily.
(4) then, for the housing unit 3A that coaxial cable 1,2 has been carried out wiring, insert shell 7 from the direction of a side opposite with the cable connection side of housing 3, the fastening of fastening shell 7 is in stationary state with inserted sheet 75,75 in the engaging recessed part 38,38 of housing 3, and the earthing strip 8,8 of the splicing ear 74 of shell 7 and cable assembly 9 is imposed solder and is electrically connected.
By said process carry out connector 10 as shown in Figure 1 assembling and with the wiring of coaxial cable 1,2.
At this moment, the horizontal level that the horizontal level of the brace 51,61 of second, third terminal 5,6 only is configured in from the brace 41 of the first terminal 4 is the below of H1, H1+H2, thereby reduce the gap of inner face of the top board 71 of cable assembly 9, the upper surface when coaxial cable 2 is received in first, second cable holding groove 31,32 and shell 7 more, just can reduce the height dimension of connector more.
The following describes the object side connector chimeric with connector 10.
100 expressions are as the female type connector (hereinafter to be referred as socket) of an example of object side's connector, and this socket is installed on printed circuit board.
As Figure 6 and Figure 7, socket 100 possesses: be formed with vertical section that connector inserts recess 111 and be the housing body 110 of U font roughly; Be pressed into also fastening at the data side terminal 120,120 of the terminal insertion section of this housing body 110; Power supply connector side terminal 130; Power cathode side terminal 140; And ground connection side terminal 150,150.
Insert outstanding being provided with of bottom surface sections of recess 111 at the connector of housing body 110: with connector 10 when chimeric and the chimeric fitting projection 112 of the chimeric recess 35 of connector 10; And the engaging teat 113,114 that when chimeric, engages with the engaging recessed part 36,37 of connector 10 with connector 10.
Housing body 110 possesses the two side 115,115 that forms connector insertion recess 111.
Shown in Fig. 7 (b), data side terminal 120 possesses: the terminal fastening portion at the engaging teat 113 that is formed at housing body 110 is pressed into, the stator 121 of the roughly reverse U shape of fastening; Be arranged on continuously this stator 121 one distolateral and the signal of printed circuit board with pad on the brace 122 of solder; And be arranged on continuously another of stator 121 distolateral and when chimeric with connector 10 with the elastic contact chip 123 of contact chip 42 Elastic Contact of corresponding the first terminal 4.
Shown in Fig. 7 (a), power supply connector side terminal 130 possesses: form the shape identical with data side terminal 120, and be pressed in the terminal fastening portion of the correspondence of the engaging teat 113 of housing body 110, the stator 131 of fastening; Be arranged on continuously this stator 131 and the power supply connector of printed circuit board with pad on the brace 132 that connects of soft solder; And be arranged on stator 131 continuously and with connector 10 when chimeric and the elastic contact chip 133 of contact chip 52 Elastic Contact of second terminal 5.
Shown in Fig. 7 (b), power cathode side terminal 140 possesses: form the shape identical with data side terminal 120, and be pressed in the terminal fastening portion of the engaging teat 114 that is formed at housing body 110, the stator 141 of fastening; Be arranged on continuously this stator 141 and the power cathode of printed circuit board with pad on the brace 142 that connects of soft solder; And be arranged on stator 141 continuously and with connector 10 when chimeric and the elastic contact chip 143 of contact chip 63 Elastic Contact of the 3rd terminal 6.
Shown in Fig. 7 (c), ground connection side terminal 150 possesses: the terminal fastening portion at the sidewall 115 that is formed at housing body 110 is pressed into, the stator 151 of the roughly reverse U shape of fastening; Be arranged on a brace 152 distolateral and that soft solder connects on the earthy pad of printed circuit board of this stator 151 continuously; And be arranged on the distolateral and leading section of another of stator 151 continuously and in connector inserts recess 111, give prominence to, and the elastic contact chip 153 that when chimeric, engages with the engaging recessed part 76 of shell 7 with connector 10.
Utilize Fig. 8 that the chimeric of connector 10 and socket 100 is described below.
Insert recess 111 by the connector that connector 10 is inserted into socket 100 and come attachment plug 10 and socket 100.
At this moment, the leading section of the elastic contact chip 153,153 of ground connection side terminal 150,150 engages with the engaging recessed part 76,76 of shell 7 and locks, thereby prevents that connector 10 from coming off from socket 100, and ground connection side terminal 150,150 and shell 7 electrical connections.
Therefore, shown in Fig. 8 (c), the external conductor 13,13 of coaxial cable 1,1 is electrically connected with the earth connection of printed circuit board via earthing strip 8,8 and shell 7 and by means of ground connection side terminal 150,150.
In addition, be connected with socket 100 by connector 10, make that the fitting projection 112 of socket 100 is chimeric with the chimeric recess 35 of connector 10, and the engaging teat 113,114 of socket 100 and 36,37 engagings of the engaging recessed part of connector 10, and as Fig. 8 (b) (c) shown in, data side terminal 120, the 120 power supply connector side terminals 130 of socket 100, the elastic contact chip 123,123,133,143 of power cathode side terminal 140 separately with contact chip 42,42,52,63 Elastic Contact of first, second, third terminal 4,4,5,6 of connector 10.
Therefore, the center conductor 11,11 of coaxial cable 1,1 is electrically connected with the holding wire of printed circuit board via the first terminal 4,4 and by means of data side terminal 120,120, the center conductor 21 of coaxial cable 2 is electrically connected with the power supply connector side line of printed circuit board via second terminal 5 and by means of power supply connector side terminal 130, and the external conductor 23 of coaxial cable 2 is electrically connected with the power cathode side line of printed circuit board via the 3rd terminal 6 and by means of power cathode side terminal 140.
In the above-described embodiments, in order to obtain being fit to the coaxial cable connector of the miniaturized electronics as portable phone or terminal equipment, and illustrated that first coaxial cable is that the coaxial cable of superfine wire, coaxial cable, the grounded parts that second coaxial cable is fine rule are the occasion of earthing strip, but the present invention is not limited to this, and the outer diameter D 2 that can be used in second coaxial cable is with respect to the occasion of the outer diameter D of first coaxial cable 1 big (be D2〉D1).
In the above-described embodiments, for the inserts to housing that makes first, second terminal is shaped easily, and illustrated horizontal part that second terminal possesses prerotation vane and this prerotation vane be disposed at the roughly the same horizontal plane of the brace of the first terminal on occasion, but the present invention is not limited to this, and the occasion that does not possess prerotation vane for second terminal also can be utilized.