JP2009238385A - Shielded connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a miniaturized shielded connector. <P>SOLUTION: The shielded connector includes: an outer housing 60; shielding shells 20, 30 attached inside thereof; an inner housing 40 attached inside the shielding shell; a terminal 10 inserted into a terminal housing chamber 41 of the inner housing and locked by a lance 46; and a front holder 50 which is inserted from the front of the inner housing, and prevents the lance from being bent in the unlocking direction as well as detecting that the terminal is inserted into an appropriate position by advancing the tip 52 into a bending space 47 of the lance when the lance is located at a position where the terminal is locked and engaged. The rear end 51 in the inserting direction of the front holder is exposed to the outside from a notch part 45 provided on the upper wall 40a of the inner housing, and the inner housing is attached inside the shielding shell, thus the rear end part of the exposed front holder is regulated in position by a peripheral wall of the shielding shell. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a shield connector having an electromagnetic shield function.

  A metal cylindrical shield shell is mounted inside the resin outer housing having a fitting port with the mating connector at the front, and a resin inner housing is mounted inside the shield shell. A shielded connector in which terminals are accommodated is known (for example, see Patent Document 1).

  In addition, in this type of shielded connector, when the terminal is mounted in the proper position and secured by the lance, it can be inserted up to the final locking position. And a front holder that double-locks the terminal by detecting that the lance is inserted to the proper position and restricting the bending of the lance in the unlocking direction by being inserted to the final locking position. Types are known.

  4 and 5 are diagrams showing a conventional example of the shield connector of that type. FIG. 4 (a) is an external perspective view showing the overall configuration of the shield connector, and FIG. 4 (b) is a view of IVb- of FIG. 4 (a). IVb arrow sectional view, FIG. 5A is an external perspective view showing the structure of the assembly of the inner housing, the terminal and the front holder, and FIG. 5B is a sectional view taken along the arrow Vb-Vb in FIG. is there.

  This shield connector includes a resin outer housing 160 having a fitting port 161 with a mating connector at the front, and a metal cylindrical front shield shell 120 and a rear shield shell 130 mounted inside the outer housing 160. A resin inner housing 140 mounted inside the shield shells 120, 130, and a terminal accommodating chamber 141 of the inner housing 140 inserted from the rear of the inner housing 140, and provided in the terminal accommodating chamber 141. In addition, the terminal 110 is retained and locked by a flexible lance 146, and the front holder 150 is inserted into the inner housing 140 from the front of the inner housing 140.

  The front holder 150 is such that when the lance 146 is in a position where the terminal 110 is prevented from coming off and locked, the tip portion 152 can enter the bending space 147 of the lance 146, and the tip portion 152 enters the bending space 147. By being able to detect that the terminal 110 has been inserted to an appropriate position and to enter, the bending of the lance 146 in the unlocking direction is restricted, and the terminal is double-locked.

By the way, in the conventional shielded connector shown in FIGS. 4 and 5, in order to prevent the front holder 150 from being tilted or dropped, a part of the peripheral wall of the inner housing 140 is a position for regulating the position of the front holder 150. It was secured as a restriction wall 148.
Japanese Patent Laid-Open No. 2000-10052

  However, as shown in FIG. 5B, when the position restricting wall portion 148 for restricting the position of the front holder 150 is secured on the peripheral wall of the inner housing 140, the height of the inner housing 140 is increased by the thickness dimension H10. There is a problem that the height H11 is increased, and there is a limit to the reduction in the height of the shield connector.

  In view of the above circumstances, an object of the present invention is to provide a shield connector that can be miniaturized.

  According to a first aspect of the present invention, a shield connector includes a resin outer housing having a fitting port with a mating connector at a front portion, a metal cylindrical shield shell mounted inside the outer housing, and the shield shell. An inner housing made of resin, inserted into the terminal housing chamber of the inner housing from the rear of the inner housing, and retained by a flexible lance provided in the terminal housing chamber When the terminal is inserted into the inner housing from the front of the inner housing and the lance is in a position to prevent the terminal from coming off and locked, the tip portion enters the bending space of the lance, A front holder for detecting that the terminal is inserted in an appropriate position and preventing the lance from being bent in the unlocking direction. In the connector, a rear end portion in the insertion direction of the front holder is exposed to the outside from a cutout portion provided on a peripheral wall of the inner housing, and the rear end portion of the exposed front holder is connected to the inner housing. By being mounted inside the shield shell, the position is regulated by the inner peripheral wall of the shield shell.

  The invention according to claim 2 is the shield connector according to claim 1, wherein the terminal accommodating chamber is secured between an upper wall and a lower wall constituting a peripheral wall of the inner housing, and the lance and the lance Is provided on the upper wall side of the inner housing, and the front holder is inserted between the terminal inserted into the terminal accommodating chamber and the upper wall, and the rear wall of the front holder is placed behind the front holder. The notch for exposing the end to the outside is provided.

  A third aspect of the present invention is the shield connector according to the second aspect, wherein the inner housing is formed in a horizontally long rectangle when viewed from the front, and a plurality of the terminal accommodating chambers are arranged side by side. The chamber is provided with the lance and a bending space of the lance, the terminals are accommodated in the terminal accommodating chambers, and the front holder is provided in common for all the terminals. It is a feature.

  According to the first aspect of the present invention, the position of the front holder is not restricted by the peripheral wall of the inner housing, but the rear end of the front holder exposed from the notch portion of the inner housing by the peripheral wall of the shield shell positioned outside the inner housing. Therefore, it is not necessary to secure the position restricting wall portion of the front holder on the peripheral wall of the inner housing, and the thickness dimension of the peripheral wall of the inner housing can be reduced accordingly. Therefore, the reduction of the thickness dimension of the inner housing can contribute to the miniaturization of the shield connector.

  According to the invention of claim 2, the notch is provided in the upper wall of the inner housing, the rear end of the front holder is exposed to the outside from the notch, and the exposed rear end of the front holder is shielded by the shield shell. Since the position is restricted, the height of the inner housing can be reduced as much as the position restriction wall portion of the front holder is not secured in the inner housing.

  According to the invention of claim 3, since a common front holder is attached to a plurality of terminals arranged side by side, the multipolar shield connector can be thinned.

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

  1A and 1B are diagrams showing an overall configuration of a shield connector according to an embodiment. FIG. 1A is an external perspective view, FIG. 1B is a cross-sectional view taken along the arrow Ib-Ib in FIG. 1A, and FIG. 2A and 2B are views showing the structure of an assembly of a housing, a terminal, and a front holder, FIG. 2A is an external perspective view, FIG. 2B is a cross-sectional view taken along IIb-IIb in FIG. 2A, and FIG. FIG. 3A is an external perspective view, and FIG. 3B is a cross-sectional view taken along the line IIIb-IIIb in FIG. 3A. .

  The shield connector includes a front resin rectangular outer housing 60 having a fitting port 61 with a mating connector at a front portion, and a metal square tube-shaped front shield shell 20 mounted inside the outer housing 60. And the rear shield shell 30, the resin inner housing 40 mounted in the shield shells 20, 30, and the terminal housing 41 inserted into the terminal housing chamber 41 of the inner housing 40 from the rear side. A male terminal 10 that is retained by a distal end of a flexible lance 46 provided in the chamber 41 by being engaged with the rear step portion 12, and the inner housing 40 from the front of the inner housing 40. The front holder 50 is inserted into the front holder 50.

  The inner housing 40 is formed in a horizontally long rectangle when viewed from the front, a plurality of terminal accommodating chambers 41 are arranged side by side, and the terminals 10 are accommodated in the respective terminal accommodating chambers. The terminal accommodating chamber 41 is secured between an upper wall 40a and a lower wall 40b constituting the peripheral wall of the inner housing 40, and a lance 46 and a lance bending space 47 are provided on the upper wall 40a side of the inner housing 40. It has been. The front holder 50 is inserted between the terminal 10 inserted into the terminal accommodating chamber 41 and the upper wall 40 a of the inner housing 40.

  Further, the front wall 42 of the terminal accommodating chamber 41 is provided with a pin through hole 43 for penetrating the pin 11 of the terminal 10. The front wall 42 of the inner housing 40 and the front part of the upper wall 40 a have a front through hole 42. When the holder 50 is inserted into the inner housing 40, notches 44 and 45 are provided to expose the rear end portion 51 of the front holder 50 to the outside. Further, the front shield shell 20 is provided with an upper wall 21 and a lower wall 22 that are in close contact with the upper wall 40a and the lower wall 40b of the inner housing 40 when the inner housing 40 is mounted inside the front shield shell 20. ing.

  The front holder 50 is provided in common for all the terminals 10, and can be moved from the temporary locking position to the final locking position when all the lances 46 are in positions where the terminals 10 are prevented from coming off and locked. Thus, the tip 52 can be made to enter the bending space 47 of the lance 46. When the tip 52 can enter the bending space 47, it is detected that all the terminals 10 have been inserted to the proper positions, and when the tip 52 enters the bending space 47 of the lance 46. The lance 46 is restrained from bending in the unlocking direction, and functions to double-lock all the terminals 10.

  Further, the rear end portion 51 of the front holder 50 in the insertion direction is exposed to the outside from the notch portion 45 provided in the upper wall 40a of the inner housing 40, and the exposed rear end portion 51 of the front holder 50 is By mounting the inner housing 40 inside the front shield shell 20, the position is regulated by the inner peripheral wall of the front shield shell 20. Further, the front half of the terminal 10 is regulated by the inner surface 53 of the rear end portion 51 of the front holder 50 coming into contact with the terminal 10.

  When assembling this shield connector, first, an electric wire is connected to the rear end portion of each male terminal 10, and the terminal 10 is connected to each terminal of the inner housing 40 in which the front holder 50 is mounted in a temporarily locked state. Insert into the storage chamber 41. When all the terminals 10 are inserted to the proper positions, the lances 46 respectively lock the terminals 10 so that the leading end 52 of the front holder 50 can enter the bending space 47 of the lance.

  At this time, if any of the terminals 10 is in the mid-insertion state, the corresponding lance 46 protrudes into the bending space 47, so that the front end portion 52 of the front holder 50 enters the bending space 47. The front holder 50 cannot be moved from the temporary locking position to the final locking position. Therefore, it is possible to detect the midway insertion of the terminal 10. In addition, when the front holder 50 can be smoothly moved to the final locking position, it can be detected that all the terminals 10 are inserted at the appropriate positions.

  As shown in FIG. 2, when the front holder 50 is inserted to the final locking position, the inner housing 40 incorporating the front holder 50 and the terminals 10 is mounted inside the front shield shell 20 as shown in FIG. The rear shield shell 30 is attached to the part. Then, by attaching them inside the outer housing 60, the assembly of the shield connector is completed.

  When assembled in this manner, the position of the front holder 50 is not restricted by the peripheral wall of the inner housing 40, but the inner housing is formed by the peripheral wall (particularly, the upper wall 21) of the front shield shell 20 positioned outside the inner housing 40. The position of the rear end portion 51 of the front holder 50 exposed from the 40 notches 45 can be regulated. Accordingly, the thickness dimension of the peripheral wall of the inner housing 40 can be reduced to the extent that it is not necessary to secure the position restricting wall portion of the front holder 50 on the peripheral wall of the inner housing 40 as in the prior art. H1 can be lowered, and the height H2 at the stage where the shield shells 20 and 30 are incorporated can be lowered. Therefore, it is possible to contribute to downsizing of the shield connector, in particular, reduction in height. In this case, since it is a multipolar shield connector in which a plurality of terminals are arranged side by side, the connector can be thinned.

It is a figure which shows the whole structure of the shield connector of embodiment of this invention, (a) is an external appearance perspective view, (b) is Ib-Ib arrow sectional drawing of (a). It is a figure which shows the structure of the assembly of the inner housing in the same shield connector, a terminal, and a front holder, (a) is an external appearance perspective view, (b) is IIb-IIb arrow sectional drawing of (a). It is a figure which shows the state which mounted | wore the front shield shell with the assembly of FIG. 2, (a) is an external appearance perspective view, (b) is a IIIb-IIIb arrow sectional drawing of (a). It is a figure which shows a prior art example, (a) is an external appearance perspective view which shows the whole structure of a shield connector, (b) is IVb-IVb arrow sectional drawing of (a). It is a figure which shows the structure of the assembly of the inner housing in the same shield connector, a terminal, and a front holder, (a) is an external appearance perspective view, (b) is Vb-Vb arrow sectional drawing of (a).

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Terminal 20 Front shield shell 30 Rear shield shell 40 Inner housing 40a Upper wall 40b Lower wall 41 Terminal accommodation chamber 45 Notch part 46 Lance 47 Lance bending space 50 Front holder 51 Rear end part 52 Front part 60 Outer housing 61 Fitting opening

Claims (3)

A resin outer housing having a fitting port with a mating connector at the front, a metal cylindrical shield shell mounted inside the outer housing, and a resin inner mounted inside the shield shell A housing, a terminal inserted into the terminal housing chamber of the inner housing from the rear of the inner housing, and retained and locked by a flexible lance provided in the terminal housing chamber; and the front of the inner housing When the tip is inserted into the inner space of the inner housing and the lance is in a position where the terminal is prevented from coming off and locked, the terminal is inserted into the bending space of the lance so that the terminal is inserted in an appropriate position. And a front holder that prevents bending of the lance in the unlocking direction, and a shield connector having
A rear end portion in the insertion direction of the front holder is exposed to the outside from a notch provided in a peripheral wall of the inner housing, and the rear end portion of the exposed front holder attaches the inner housing to the shield shell. A shield connector characterized in that the position is regulated by an inner peripheral wall of the shield shell by being mounted inside. The shield connector according to claim 1,
The terminal accommodating chamber is secured between an upper wall and a lower wall constituting a peripheral wall of the inner housing, the lance and a bending space of the lance are provided on the upper wall side of the inner housing, and the front holder Is inserted between the terminal inserted into the terminal accommodating chamber and the upper wall, and the upper wall is provided with the notch for exposing a rear end portion of the front holder to the outside. Shield connector to be used. The shield connector according to claim 2,
The inner housing is formed in a horizontally long rectangle when viewed from the front, a plurality of the terminal accommodating chambers are arranged side by side, and each terminal accommodating chamber is provided with the lance and a bending space of the lance, respectively. The shield connector is characterized in that each of the terminals is accommodated in a chamber, and the front holder is provided in common for all of the terminals.

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