JP3704281B2 - Shield connector - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a shield connector.
[0002]
[Prior art]
FIG. 7 shows a conventional shield connector, which is a fitting hole 3 into which a shield shell 2 of a mating connector is inserted into a connector housing 1 having conductivity (for example, made of aluminum). Is provided. Then, the louver terminal 4 is inserted into the fitting hole 3 from the rear end opening 3 </ b> A opposite to the mating connector, and the rear end opening 3 </ b> A is closed with the inner housing 5. The louver terminal 4 is held in the fitting hole 3 between the retaining protrusion 7 provided on the front side and the inner housing 5.
[0003]
[Problems to be solved by the invention]
By the way, in the shield connector having the above-described configuration, when the shield shell 2 is inserted into the fitting hole 3, the elastic band portion 4 </ b> A of the louver terminal 4 is compressed in the longitudinal direction by the sliding contact resistance with the counterpart shield shell 2. As a result, the elastic band portion 4A is strongly pressed against the counterpart shield shell 2, and the sliding resistance is further increased. For this reason, the fitting resistance of the whole connector was large.
[0004]
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a shield connector capable of reducing the fitting resistance with the mating connector.
[0005]
[Means for Solving the Problems]
To achieve the above object, the shield connector according to the invention of claim 1 is formed with a fitting recess into which a shield shell provided in the mating connector is inserted in the connector housing having conductivity. A louver terminal is housed inside the recess, and the louver terminal is connected to a pair of ring portions fitted in close contact with the inner wall of the fitting recess by a plurality of elastic band portions and elastic bands. From the inner wall of the mating recess in the shield connector, which is formed by curving the middle part of the part inward and pressing the curved part of the elastic band part against the shield shell to achieve a conductive connection between the shield shell and the connector housing It is characterized in that it includes a front stopper portion and a rear stopper portion that protrude and are sandwiched between both ring portions of the louver terminal and are adjacent to the respective ring portions .
[0007]
The invention according to claim 2 is characterized in that, in the shielded connector according to claim 1 , the step is provided on the front side of the louver terminal among the fitting recesses, and is provided with a step portion for reducing the diameter of the fitting recess. .
[0008]
[Action and effect of the invention]
<Invention of Claim 1>
When the shield shell provided in the mating connector is inserted into the fitting recess of the shield connector, the elastic band portion of the louver terminal receives a force toward the back side of the fitting recess due to sliding contact resistance with the shield shell. Then, the front ring portion of the louver terminal is locked to the front stopper portion, and the sliding resistance acts as a force for pulling the elastic band portion. On the other hand, when detaching both connectors, the elastic band portion receives a force toward the front side of the fitting recess due to sliding contact resistance with the shield shell. Then, this time, the rear ring portion of the louver terminal is locked to the rear stopper portion, and the slidable contact resistance at the time of detachment also acts as a force for pulling the elastic band portion. Therefore, according to the shielded connector of the present invention, the elastic band portion is not compressed and protrudes inward as in the prior art, and both the fitting and detaching operations of the connector can be performed smoothly.
[0010]
<Invention of Claim 2 >
According to the second aspect of the present invention, the front end of the louver terminal is covered with the stepped portion, and abutment with the shield shell can be prevented.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
< Reference example >
Reference examples not included in the technical scope of the present invention will be described below with reference to FIGS. The connector housing 10 provided in the shielded connector 1 of this reference example is constructed by assembling a sub housing 12 made of an insulating resin to a housing body 11 made of a conductive resin.
[0012]
As shown in FIG. 3, the sub-housing 12 includes three male tabs 14 penetrating at three locations along the longitudinal direction of the horizontally extending flat plate portion 13. As shown in FIG. 1, three cylindrical insertion portions 15 (one insertion portion 15 in FIG. 1) corresponding to the male tab 14 are formed on the front surface (left side surface in FIG. 1) of the flat plate portion 13. Only the male tabs 14 pass through the reinforcing walls 16A formed inside the fitting portions 15. A reinforcing wall 16 </ b> B is also formed on the back surface of the housing body 11 at the through portion of each male tab 14. Furthermore, as shown in FIG. 3, a plurality of press-fitting holes 17 are formed through a predetermined position of the flat plate portion 13.
[0013]
The shield connector 1 of this reference example is provided with three metal louver terminals 20 corresponding to the three male tabs 14. As shown in FIG. 4, the louver terminal 20 connects a pair of coaxially arranged ring portions 21 and 21 with a plurality of elastic band portions 22, and connects the middle portion of each elastic band portion 22 to the inside. The structure is curved toward More specifically, the louver terminal 20 is formed by punching a metal plate as a base material. In the punched state, the ring portions 21 and 21 become a pair of long plates that extend straight in parallel. The first elastic band portion 22 group (see reference numeral 22A in FIG. 4) is arranged so as to connect the central parts of the second elastic band portion 22 (see reference numeral 22 in FIG. 4). 22B), and a third group of elastic bands 22 (see reference numeral 22C in FIG. 4) is arranged so as to connect the other ends of the long plates. The louver terminal 20 is formed by curving the longitudinal center portion of each elastic band portion 22 and bending the entire pair of long plates in an annular shape. Here, each ring part 21 is in a state in which there is a gap S1 between both ends of each long plate in a natural state.
[0014]
As described above, the housing body 11 is formed of a conductive resin, and this conductive resin is formed by compounding a conductive filler such as carbon with a synthetic resin. As shown in FIG. 1, the housing body 11 is provided with a terminal accommodating portion 31 protruding forward (left side in FIG. 1) from the substantially rectangular flat plate portion 30, and the terminal accommodating portion 31 is shown in FIG. Thus, the three terminal accommodating chambers 32 (corresponding to the “fitting recess” of the present invention) having a circular cross section are arranged side by side and penetrated. As shown in FIG. 3, a plurality of press-fit pins 30 </ b> P are formed on the rear surface of the flat plate portion 30 so as to protrude rearward from a plurality of locations located around the central terminal accommodating chamber 32. 30P is press-fitted into a press-fitting hole 17 formed in the sub-housing 12.
[0015]
As shown in FIG. 1, a protrusion 33 (corresponding to the “stepped portion” of the present invention) is formed along the inner peripheral surface of the terminal side chamber 32 in the longitudinal direction of each terminal accommodating chamber 32. ing. The louver terminal 20 is fitted and mounted on the back side (the right side in FIG. 1) of the protrusion 33 in the terminal accommodating chamber 32 to form a contact mounting portion 34.
[0016]
Now, stopper portions 35 are formed so as to protrude from a plurality of positions along the circumferential direction near the ridge 33 on the inner peripheral surface of the contact mounting portion 34. More specifically, a total of four stopper portions 35 are formed on the left and right sides of the inner wall of the contact mounting portion 34, and the distance between the stopper portion 35 and the protrusion 33 is determined by the ring portion 21 of the louver terminal 20. It is set slightly larger than the width.
[0017]
As shown in FIG. 2, attachment holes 38 are formed through the four corners of the flat plate portion 30 of the housing body 11, and a metal ring 38 </ b> A is press-fitted into the attachment holes 38. Further, cam followers 37, 37 are formed on the outer surface of the terminal accommodating portion 31 in the housing body 11 so as to project toward both sides.
[0018]
The shield connector 1 is assembled as follows. First, the louver terminal 20 is inserted from the terminal housing chamber 32 through the opening on the sub housing 12 side. At this time, the ring portion 21 of the louver terminal 20 is inserted in a state of being narrowly deformed so as to narrow the gap S1, and the front ring portion 21 (left side in FIG. 1) is connected to the protrusion 33 in the terminal accommodating chamber 32. When it is arranged between the stopper portion 35, the small deformation is released. Then, the front ring portion 21 is sandwiched between the protrusion 33 and the stopper portion 35 and is held immovable in the axial direction. Further, both ring portions 21 and 21 are brought into close contact with the inner wall of the contact mounting portion 34 in the terminal accommodating chamber 32 by the elastic reaction force, so that the conductive connection between the housing body 11 and the louver terminal 20 is achieved.
[0019]
Next, the housing body 11 and the sub housing 12 are assembled. For this purpose, first, the rubber ring 60 is mounted in the concave portion of the flat plate portion 30 of the housing main body 11, and each insertion portion 15 of the sub-housing 12 is directed to each terminal accommodating chamber 32 of the housing main body 11, so 30 and 13 are pressed against each other so as to overlap each other. Then, the press-fit pins 30P formed on the flat plate portions 30 and 13 are press-fitted into the press-fit holes 17, and the housing body 11 and the sub-housing 12 are held together.
[0020]
Further, the shield connector 1 is screwed to the panel with a bolt that is addressed to a connector mounting hole formed in a panel (not shown) and passed through the mounting hole 38 of the flat plate portion 30. As a result, the rubber ring 60 is crushed between the flat plate portion 30 and the panel to be waterproof, and the housing body 11 and the panel are electrically connected.
[0021]
The configuration of the shield connector 1 is as described above, and the mating connector 50 coupled to the shield connector 1 is shown in FIG. 5, and a female housing (not shown) is provided inside the terminal housing cylinder 52 provided in the connector housing 51. A type terminal fitting is accommodated and provided. The terminal accommodating cylinder 52 is formed by covering the rear end of the small-diameter cylindrical portion 53 with the front end of the large-diameter cylindrical portion 54 and partially communicating them with a communication wall (not shown). A shield shell 55 is inserted and assembled in the gap between 53 and 54. The shield shell 55 covers the outer peripheral surface of the small diameter cylindrical portion 53 of the terminal accommodating cylinder 52. A gate-shaped lever 56 is rotatably provided on the outer surface of the connector housing 51. A pair of leg portions 57 (only one leg portion 57 is shown in FIG. 5) provided in the lever 56 is formed with a cam groove (not shown) corresponding to the cam follower 37.
[0022]
Hereinafter, the operation and effect of this reference example will be described.
In order to couple the shield connector 1 with the counterpart connector 50, the cam follower 37 of the shield connector 1 is engaged with the cam groove of the lever 56 provided in the counterpart connector 50, and the lever 56 is rotated. Then, both the connectors 1 and 50 are pulled toward each other, and the terminal accommodating cylinder 52 of the mating connector 50 enters the terminal accommodating portion 31. Then, the shield shell 55 covering the outer surface of the distal end side of the terminal accommodating cylinder 52 enters the inside of the louver terminal 20, and the elastic band portion 22 of the louver terminal 20 is brought into contact with the shield shell 55 by sliding contact resistance. It receives force toward the back side of 34. However, in this reference example , the ring portion 21 on the front side of the elastic band portion 22 of the louver terminal 20 is locked to the stopper portion 35, so that the sliding resistance acts as a force for pulling the elastic band portion 22. .
[0023]
Thus, according to the shielded connector 1 of the present reference example , the elastic band portion 22 is not compressed as in the prior art and does not stick out inward, and the fitting operation can be performed smoothly. When the shield connectors 1 and 50 are detached, the louver terminal 20 is locked to the front protrusion 33 to prevent it from coming off.
[0024]
< Embodiment >
This embodiment is shown in FIG. 6 and has a configuration in which a rear stopper portion 35B is additionally provided in the terminal accommodating chamber 32 of the housing body 11 of the reference example . Four rear stopper portions 35B are provided on the back side of the terminal accommodating chamber 32 in correspondence with the stopper portion 35 described in the above reference example (hereinafter referred to as “front stopper portion 35A” for convenience). Is adjacent to the front surface of the ring portion 21B on the back side. More specifically, when the louver terminal 20 receives a force toward the front side of the contact mounting portion 34, the ring portion 21 </ b> A on the front side of the louver terminal 20 does not hit the protrusion 33 and the rear of the louver terminal 20. The ring part 21B on the side is set to contact the rear stopper part 35B.
[0025]
As a result, even when the louver terminal 20 is detached from the louver terminal 20, even if the louver terminal 20 receives a force toward the front side of the contact mounting portion 34 due to the sliding contact resistance with the shield shell 55. The ring portion 21B is locked to the rear stopper portion 35B, and the sliding contact resistance acts as a force for pulling the elastic band portion 22. Further, when the connectors 1 and 50 are fitted together, as in the above-described reference example , the front ring portion 21A of the louver terminal 20 is locked to the front stopper portion 35A, and the sliding contact resistance applied to the louver terminal 20 is elastic. This acts as a force for pulling the belt portion 22. Thereby, both the operation | work of a fitting and removal | release of a shield connector can be performed smoothly.
[0026]
<Other embodiments>
The present invention is not limited to the embodiments. For example, the embodiments described below are also included in the technical scope of the present invention, and various modifications other than those described below can be made without departing from the scope of the invention. Can be implemented.
[0028]
(1) In the embodiment, the protrusion 33 may not be provided. However, if the protrusion 33 is provided on the front side of the louver terminal 20 as in the above-described embodiment, the front end of the louver terminal 20 is covered with the protrusion 33 to prevent abutment with the shield shell 55. it can.
[Brief description of the drawings]
1 is an exploded sectional view of a shield connector according to a reference example . FIG. 2 is a front view of the shield connector. FIG. 3 is a rear view of the shield connector. FIG. 4 is a perspective view of shield contacts. Sectional view [FIG. 6] Side sectional view of male and female connectors according to an embodiment of the present invention [FIG. 7] Side sectional view of a conventional shield connector [Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Connector housing 11 ... Housing main body 20 ... Louver terminal 21,21A, 21B ... Ring part 22 ... Elastic belt part 32 ... Terminal accommodation chamber (fitting recess)
34 ... Contact mounting portion 35 ... Stopper portion 35A ... Front side stopper portion 35B ... Rear side stopper portion 50 ... Mating connector 51 ... Connector housing 55 ... Shield shell

Claims (2)

A fitting recess into which a shield shell provided in the mating connector is inserted is formed in the connector housing having conductivity, and a louver terminal is accommodated in the fitting recess, and the louver terminal is The pair of ring parts fitted in close contact with the inner wall of the fitting recess are connected by a plurality of elastic band parts, and the middle part of the elastic band part is bent inward,
In the shielded connector that aims to establish a conductive connection between the shield shell and the connector housing by pressing the curved portion of the elastic band portion against the shield shell,
A shield connector comprising a front stopper portion and a rear stopper portion protruding from an inner wall of the fitting recess and sandwiched between both ring portions of the louver terminal and adjacent to each ring portion. The shield connector according to claim 1 , further comprising a step portion that is positioned in front of the louver terminal in the fitting recess and reduces the diameter of the fitting recess.

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