JP2008021548A - Shielded connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shielded connector made easier to invite a core wire into a center slot, even in case of height limit in a pressure-welding blade itself. <P>SOLUTION: In the shielded connector provided with inner terminal fittings 10 connected to a core wire 101 of a shielded cable, a cylindrical resin sleeve 20 housing the inner terminal fittings, and cylindrical outer terminal fittings 30 housing the resin sleeve and connected to a shielded conductor, the inner terminal fittings include a pressure welding blade 13 for connecting the core wire in pressure welding from above through an opening 22 fitted at a peripheral face of the resin sleeve and an opening 32 fitted at a peripheral face of the outer terminal fittings, the resin sleeve has a support wall 23 adjacent to the pressure welding blade integrally formed with the inner terminal fittings housed in the resin sleeve, and the support wall includes a guide slope 23c and a vertical groove 23a for inviting the core wire into the center slot by getting in contact with the core wire ahead of the pressure welding blade when the core wire is press-fitted from above into a center slot 13a of the pressure welding blade. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a shield connector (for example, an antenna plug connector) that is electrically connected to a terminal portion of a shielded cable such as a coaxial cable.

  When transmitting a high-frequency signal, a shielded cable and a shielded connector for high frequency are used. Such a shielded cable with a shield connector is also used for transmission of a high-frequency signal between in-vehicle devices in a vehicle such as an automobile. There is an increasing demand for miniaturization of in-vehicle shielded connectors.

  In general, a shielded cable has a structure in which a shield conductor (such as a braid) is disposed on the outside of a core wire via an insulator, and the outer periphery of the shield conductor is covered with a sheath. On the other hand, the shield connector includes an internal terminal fitting connected to the core wire, a cylindrical resin sleeve containing the internal terminal fitting, a cylindrical external terminal fitting containing the resin sleeve and connected to the shield conductor, It has a structure with

  In general, a crimping portion is often provided at a portion where the core wire is connected to the internal terminal fitting for convenience of assembling order or the like, but a press contact blade may be provided. Patent Document 1 discloses an example in which a core wire is connected to an internal terminal fitting using a press contact blade.

  When connecting the core wire using the press contact blade, as shown in FIG. 8, by providing a V-shaped guide slope 200c at the entrance of the central slot 200a of the press contact blade 200, the core wire 101 can be easily guided into the central slot 200a. It is common.

JP 2002-319456 A

  By the way, in the case of a shielded connector, as described above, there is an increasing demand for miniaturization, and a reduction in cross-sectional dimension is also strongly demanded in the portion where the press contact blade is provided. Therefore, when the press contact blade 200 as shown in FIG. 8 is provided on the internal terminal fitting, it is difficult to secure the guide slope 200c.

  For example, if the angle θ of the guide slope 200c shown in FIG. 9 is reduced in order to make the core wire 101 easy to be guided into the central slot 200a while sufficiently securing the length H2 of the straight portion of the central slot 200a, the press contact blade The height H1 of 200 must be increased, which is inconvenient in reducing the size of the internal terminal fitting. Further, the height H1 of the press contact blade 200 can be suppressed by reducing the angle θ of the guide slope 200c to make it easier to guide the core wire 101 into the central slot 200a at the expense of the length H2 of the straight portion of the central slot 200a. However, the connection performance of the core wire 101 may be affected.

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide a shield connector that can easily guide the core wire into the central slot even when the height of the press contact blade itself is limited. is there.

In order to achieve the above-described object, the shield connector according to the present invention is characterized by the following (1) to (4).
(1) A shielded cable connector in which a shield conductor is disposed on the outside of a core wire via an insulator, and the outer periphery of the shield conductor is covered with a sheath,
An internal terminal fitting connected to the core wire;
A cylindrical resin sleeve that accommodates the internal terminal fitting;
While accommodating the resin sleeve, a cylindrical external terminal fitting to which the shield conductor is connected,
With
The internal terminal fitting is provided with a press contact blade for press-connecting the core wire from above through an opening provided on the peripheral surface of the resin sleeve and an opening provided on the peripheral surface of the external terminal fixture,
A support wall adjacent to the press contact blade is integrally formed with the resin sleeve in a state where the internal terminal fitting is accommodated in the resin sleeve,
When the core wire is press-fitted into the central slot of the press contact blade from above, a guide portion that contacts the core wire and guides the core wire into the central slot is provided on the support wall.
(2) In the shield connector configured as described in (1) above,
As the guide portion, a vertical groove corresponding to the central slot of the press contact blade is provided in the center portion in the width direction of the protective wall, and at the entrance of the vertical groove is positioned higher than the press contact blade. A V-shaped guide slope that contacts the core wire before the press contact blade and guides the core wire into the central slot of the press contact blade is provided.
(3) In the shield connector configured as described in (2) above,
The internal terminal fitting has a plug shape formed by rounding a sheet metal into a cylindrical shape, and the rear half portion in the longitudinal direction is formed in a semi-cylindrical shape with an open top surface. Inside, the press contact blade is arranged with the inlet of the central slot facing upward,
The support wall provided integrally with the resin sleeve is formed in a U-shaped frame that is suspended by supporting both ends of the upper portion, and the second half of the internal terminal fitting is provided below the support wall. When inserted into the resin sleeve from the front, a gap through which the semi-cylindrical portion passes is secured.
(4) In the shield connector having any one of the constitutions (1) to (3),
The rear half of the internal terminal fitting is accommodated and fixed in the resin sleeve from the front, and the resin sleeve is accommodated and fixed in the external terminal fitting from the front, and in this state, provided on the peripheral surface of the resin sleeve. The core wire of the shield cable can be press-contacted to the press-contact blade of the internal terminal fitting through the opening and the opening provided on the peripheral surface of the external terminal fitting.

According to the shield connector having the configuration of (1) above, the support wall adjacent to the press contact blade is integrally formed on the resin sleeve that accommodates the internal terminal fitting, and the core wire is formed on the support wall from above to the central slot of the press contact blade. When press-fitting, there is a guide part that contacts the core wire before the press contact blade and guides the core wire into the central slot, so the core wire is smoothly guided into the central slot of the press contact blade without providing a guide slope on the press contact blade itself. be able to. Therefore, the height of the press contact blade itself can be suppressed, and an internal terminal fitting having a small cross-sectional dimension can be made. Further, since the length of the straight portion of the central slot is not sacrificed, the connection performance of the core wire is not deteriorated. Further, since the core wire can be guided to the center slot of the press contact blade by the guide portion of the resin support wall, it is possible to prevent the core wire from being scratched by the press working press contact blade. In addition, since there is a support wall at a position adjacent to the press contact blade, the core wire can be supported by both the press contact blade and the support wall, and the core wire can be supported even when the press contact blade is formed of a thin plate material. It can be performed stably.
According to the shield connector having the configuration of (2) above, the guide wall is provided with a vertical groove corresponding to the central slot of the press contact blade, and at the inlet of the vertical groove at a position higher than the press contact blade. By positioning, a V-shaped guide slope that contacts the core wire before the press contact blade and guides the core wire into the central slot of the press contact blade is provided, so it is easy to guide the core wire into the central slot depending on the angle of the guide slope Can be determined. Further, since the core wire is supported by the central slot of the press contact blade and the longitudinal groove of the support wall, the stability of the support of the core wire can be increased.
According to the shield connector having the configuration of (3) above, since the insertion clearance of the internal terminal fitting is secured below the support wall formed in the U-shaped frame shape, The second half can be inserted and assembled.
According to the shield connector having the configuration (4), the core wire of the shield cable can be press-contacted to the press contact blade of the internal terminal fitting through the opening provided on the peripheral surface of the resin sleeve and the opening provided on the peripheral surface of the external terminal fitting. Because there is, it is easy to connect shielded cables.

  According to the present invention, even when the height of the press contact blade itself is limited, the core wire can be easily guided into the central slot of the press contact blade.

  The present invention has been briefly described above. Furthermore, the details of the present invention will be further clarified by reading through the best mode for carrying out the invention described below with reference to the accompanying drawings.

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

  1 is a perspective view seen from above showing a state before assembly of the shield connector of the embodiment, FIG. 2 is a perspective view showing a state where a shield cable is being connected to the shield connector in the assembled state, and FIG. 3 is assembled. FIG. 4 is an enlarged view of the IV part of FIG. 3, FIG. 5 is a sectional view taken along the line VV of FIG. 3, and FIG. 6 is shown in FIG. FIG. 7 is an enlarged view of a main part of FIG. 6.

  As shown in FIGS. 1 to 3, a shielded cable (a coaxial cable in this example) W to be connected here is a shield conductor (braided or the like) 103 via an insulator 102 outside the core wire 101 at the center. And the outer periphery of the shield conductor 103 is covered with a sheath 104. As shown in FIG. 3, there is a case where the capacitor 110 is connected to the tip of the core wire 101, and the terminal 111 of the capacitor 110 is pressure-connected to the shield connector in the same manner as the core wire 101. Here, for convenience of explanation, it is assumed that the core wire 101 is extended.

  The shield connector M of the embodiment houses an internal terminal fitting 10 connected to the core wire 101, a cylindrical resin sleeve (made of a dielectric) 20 that houses the internal terminal fitting 10, a resin sleeve 20, and a shield. And a cylindrical external terminal fitting 30 to which the conductor 103 is connected. Actually, an exterior case (not shown) covering the outside of the external terminal fitting 30 is also provided.

  The internal terminal fitting 10 has a plug shape formed by rounding a sheet metal into a cylindrical shape, and the front half in the longitudinal direction becomes an insertion connection portion 11 to the mating connector, and the rear half is a semi-cylindrical portion 12 whose upper surface is open. It has become. The inner bottom surface of the semi-cylindrical portion 12 passes through a slit-like opening 22 provided in the upper part of the peripheral surface of the resin sleeve 20 and a slit-like opening 32 provided in the upper part of the peripheral surface of the external terminal fitting 30. A press-contact blade 13 for press-connecting the core wire 101 is disposed with the inlet of the central slot 13a facing upward.

  As shown in FIGS. 3 to 7, a support wall 23 adjacent to the press contact blade 13 is integrally formed in the cylindrical resin sleeve 20 in a state where the internal terminal fitting 10 is accommodated in the resin sleeve 20. ing. The support wall 23 is formed in a U-shaped frame that is suspended by being supported at both ends of the upper portion. Under the support wall 23, the rear half of the internal terminal fitting 10 is formed from the front side with the resin sleeve 20. A gap 25 through which the semi-cylindrical portion 12 passes is secured when inserted into the.

  The support wall 23 provided on the resin sleeve 20 has a function of guiding the core wire 101 and a function of supporting the core wire 101, and the core wire 101 is inserted into the central slot 13 a of the press contact blade 13 from above. When press-fitting, there is provided a guide portion that comes into contact with the core wire 101 before the press contact blade 13 and guides the core wire 101 into the central slot 13a. That is, as the guide portion, a longitudinal groove 23a corresponding to the central slot 13a of the press contact blade 13 is provided in the center portion in the width direction of the protective wall 23, and the inlet of the longitudinal groove 23a is positioned higher than the press contact blade 13. By being positioned, a V-shaped guide slope 23 c is provided that contacts the core wire 101 before the press contact blade 13 and guides the core wire 101 into the central slot 13 a of the press contact blade 13.

  When assembling, first, the rear half of the internal terminal fitting 10 is housed and fixed in the resin sleeve 20 from the front, and then the resin sleeve 20 is housed and fixed in the external terminal fitting 30 from the front. At that time, the lock portion 26 of the resin sleeve 20 is engaged with the locked portion 16 of the internal terminal fitting 10, and the lock portion 38 of the external terminal fitting 30 is engaged with the locked portion 28 of the resin sleeve 20, Removal of the resin sleeve 20 and the internal terminal fitting 10 is prevented. In this state, the core wire 101 of the shielded cable W can be pressed against the press contact blade 13 of the internal terminal fitting 10 through the opening 22 provided on the peripheral surface of the resin sleeve 20 and the opening 32 provided on the peripheral surface of the external terminal fitting 30. It becomes like this. A crimping portion 33 of the shield conductor 103 and a crimping portion 34 of the sheath 104 are provided at the rear end of the external terminal fitting 30.

  When the shield cable W is connected to the shield connector M, the shield cable W with the terminal portion peeled is set above the shield connector M. Then, the shield cable W is lowered to the shield connector M in a parallel posture, and the core wire 101 is dropped into the central slot 13 a of the press contact blade 13. At this time, even if the descending position of the core wire 101 is slightly deviated, the core wire 101 can be guided to the central slot 13 a by the action of the guide slope 23 c provided on the support wall 23 of the resin sleeve 20. When the core wire 101 is drawn into the central slot 13a, the press punch is lowered to press-fit the core wire 101 into the central slot 13a. Further, the shield conductor 103 is caulked and fixed by the caulking portion 33, and the sheath 104 is caulked and fixed by the caulking portion 34. This completes the connection.

  As described above, according to the present embodiment, the support wall 23 adjacent to the press contact blade 13 is integrally formed on the resin sleeve 20 that accommodates the internal terminal fitting 10, and the core wire 101 is press contacted to the support wall 23 from above. When press-fitting into the central slot 13a of the blade 13, the V-shaped guide slope 23c that contacts the core wire 101 and guides the core wire 101 into the central slot 13a before the press-contact blade 13 is provided. Even without providing a slope, the core wire 101 can be smoothly guided into the central slot 13a of the press contact blade 13.

  Therefore, the height of the press contact blade 13 itself can be suppressed, and the internal terminal fitting 10 having a small cross-sectional dimension can be produced. Further, since the length of the straight portion of the central slot 13a is not sacrificed, the connection performance of the core wire 101 is not deteriorated. Further, since the core wire 101 can be guided to the central slot 13a of the press contact blade 13 by the guide slope 23c of the resin support wall 23, it is possible to prevent the core wire 101 from being scratched due to the sag of the press contact press blade 13. .

  In addition, by setting the angle of the V-shaped guide slope 23c to an appropriate angle, it is possible to determine the ease of guiding the core wire 101 into the central slot 13a. Moreover, since the core wire 101 is supported by the central slot 13a of the press contact blade 13 and the vertical groove 23a of the support wall 23, the stability of the support of the core wire 101 can be increased.

  Further, since the insertion gap 25 of the internal terminal fitting 10 is secured below the support wall 23 formed in a U-shaped frame shape, the latter half of the internal terminal fitting 10 is inserted from the front end of the resin sleeve 20. It can be assembled, and it is easy to assemble. Further, since the core wire 101 of the shielded cable W can be press-contacted to the press-contacting blade 13 of the internal terminal fitting 10 in a state where the internal terminal fitting 10, the resin sleeve 20, and the external terminal fitting 30 are assembled, the connecting work of the shielded cable W can be performed. Easy to do.

  In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably. In addition, the material, form, number, arrangement location, and the like of each component in the above-described embodiment are arbitrary and not limited as long as the present invention can be achieved.

It is the perspective view seen from the top which shows the state before the assembly of the shield connector of embodiment of this invention. It is a perspective view which shows the state which is going to connect a shielded cable to the said shield connector of the assembled state. It is a longitudinal cross-sectional view which shows the relationship between the said shielded connector of the assembled state, and the shielded cable to connect. FIG. 4 is an enlarged view of a part IV in FIG. 3. It is a VV arrow directional cross-sectional view of FIG. It is the perspective view which looked at the part shown in FIG. 5 from back diagonally upward. It is an enlarged view of the principal part of FIG. It is a perspective view which shows the general example of the conventional press-contacting blade. It is a figure for demonstrating the problem of the conventional press-contacting blade.

Explanation of symbols

10: Internal terminal fitting 11b: Semi-cylindrical portion 13: Press contact blade 13a: Central slot 20: Resin sleeve 22: Opening 23: Support wall 23c: Guide slope 23a: Vertical groove 25: Gap 30: External terminal fitting 32: Opening M: shield connector W: shield cable 101: core wire 102: insulator 103: shield conductor 104: sheath

Claims (4)

A shield connector for a shielded cable in which a shield conductor is disposed outside the core wire via an insulator, and the outer periphery of the shield conductor is covered with a sheath,
An internal terminal fitting connected to the core wire;
A cylindrical resin sleeve that accommodates the internal terminal fitting;
While accommodating the resin sleeve, a cylindrical external terminal fitting to which the shield conductor is connected,
With
The internal terminal fitting is provided with a press contact blade for press-connecting the core wire from above through an opening provided on the peripheral surface of the resin sleeve and an opening provided on the peripheral surface of the external terminal fixture,
A support wall adjacent to the press contact blade is integrally formed with the resin sleeve in a state where the internal terminal fitting is accommodated in the resin sleeve,
When the core wire is press-fitted into the central slot of the press contact blade from above, a guide portion that contacts the core wire and guides the core wire into the central slot is provided on the support wall. Characteristic shield connector.   As the guide portion, a vertical groove corresponding to the central slot of the press contact blade is provided in the center portion in the width direction of the protective wall, and at the entrance of the vertical groove is positioned higher than the press contact blade. 2. The shield connector according to claim 1, further comprising a V-shaped guide slope that contacts the core wire before the press contact blade and guides the core wire into a central slot of the press contact blade. The internal terminal fitting has a plug shape formed by rounding a sheet metal into a cylindrical shape, and the rear half portion in the longitudinal direction is formed in a semi-cylindrical shape with an open top surface. Inside, the press contact blade is arranged with the inlet of the central slot facing upward,
The support wall provided integrally with the resin sleeve is formed in a U-shaped frame that is suspended by supporting both ends of the upper portion, and the second half of the internal terminal fitting is provided below the support wall. The shield connector according to claim 2, wherein a gap through which the semi-cylindrical portion passes is secured when inserted into the resin sleeve from the front.   The rear half of the internal terminal fitting is accommodated and fixed in the resin sleeve from the front, and the resin sleeve is accommodated and fixed in the external terminal fitting from the front, and in this state, provided on the peripheral surface of the resin sleeve. The core wire of the shield cable can be press-contacted to the press-contact blade of the internal terminal fitting through the opening and the opening provided on the peripheral surface of the external terminal fitting. The shield connector described in the section.

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