KR19990045777A - Electrical connector with double fastening member - Google Patents

Abstract

The electrical connector is insulated housing (20, 40) with contact cavities (22, 29, 46, 48) for receiving signals and homogeneous electrical contacts, and in guide slots (50, 52) of insulated housing (20, 40). A dual fastening member 60 which extends in a contact cavity and transverse to the contact insertion direction of the electrical contact in the contact cavity, in the contact insertion direction and in the transverse direction relative to the contact fixation plate 54 A flat component 68 of the dual fastening member 60, wherein the flat component 64 is located in the guide slot 50 whereby the flat component 68 in the guide slot 52 is a double fastening member 60. ) Is prevented from lateral shaking of the double holding member 60 when moving between the contact insertion position and the contact fixing position.

Description

Electrical connector with double fastening member

The present invention relates to an electrical connector with a double fastening member for securing electrical contacts inserted into a contact cavity of an insulated housing.

An insulating housing having a plurality of contact cavities into which electrical contacts are inserted in a predetermined direction and a planar double fastening member having contact insertion openings corresponding to contact cavities inserted into the insulating housing in a direction substantially orthogonal to the insertion direction. Electrical connectors are well known as described in Japanese Patent Application Nos. 94-74319, 94-36552 and 93-59375. In such electrical connectors, the dual fastening member is primarily inserted into the insulating housing so that the contact insertion openings of the dual fastening member are in a temporary fastening position where the contact insertions are aligned with the contact cavities. In this position, the contacts are aligned with the contact cavities, and then the dual fastening member is inserted into the full lock position. This secures the contact to the contact cavity by means of a support member and a dual fastening member, thereby enabling a reliable double fixation of the contacts.

In this type of electrical connector, the operation of inserting the contact into the contact cavity when the double fastening member is in the temporary fastening position is typically performed by an automatic inserter. This contact insertion operation is performed when the openings and contact cavities in the double fastening member are precisely aligned.

However, the insulating housing and the double fixing member are usually made from the resin material by injection molding, and due to the deviation of the dimensions, the double fixing member may be deformed when placed in the temporary fixing position. As such or in some cases, it is impossible to obtain an alignment of the openings of the double fastening member and the contact cavities of the housing. As a result, the contact inserted into the contact cavity by the automatic contact inserter is supported by the double fastening member, which may cause the inserter to stop or cause damage to the housing or the contact or both. This problem is very serious in connectors having a large number of contacts, which in turn causes errors in large dimensions that make it difficult to align the openings of large size connectors and double fastening members and the contact cavities of the housing. It is further desired to provide a high reliability fastening member for large contact.

In view of the above situation, it is an object of the present invention to provide an electrical connector in which the instability of the double fastening member is eliminated to provide smooth insertion of contacts, and that large contacts are stably maintained in the contact cavity.

In order to achieve the above object, the electrical connector according to the present invention has a contact cavity for inserting a contact in a predetermined direction and a double fixation which can move transversely with respect to the direction of holding and inserting the contact inserted into the contact cavity and the contact insertion direction. The double retaining member extends in the direction of contact insertion and in the direction of movement, including an insulating housing having a housing lance for retaining the member, transversely with respect to the above directions. It has a plate component that prevents side fixation, the housing lance of the contact is prevented from bending, and the insulating housing has a guide slot that holds the plate component in the transverse direction.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

1 is an exploded perspective view showing various elements of the electrical connector of the present invention.

2 is a cross-sectional view of the assembled connector of FIG. 1.

3A, 3B and 3C are front, bottom and side views of the connector housing shown in FIG.

4 is a rear view of the housing shown in FIG. 3.

5A is a cross-sectional view taken along line 5a-5a of FIG. 3A.

5B is a cross-sectional view taken along the line 5b-5b of FIG. 3A.

6A, 6B and 6C are front, side and bottom views of the lance housing shown in the figure.

FIG. 7 is a rear view of the lance housing shown in FIG. 6. FIG.

8A is a cross-sectional view taken along the line 8a-8a of FIG. 6A.

FIG. 8B is a cross-sectional view taken along line 8b-8b in FIG. 6A.

9A and 9B are front and side views of the dual fastening member of FIG.

10 is a plan view of the double fixing member of FIG.

FIG. 11 is a front view of the cam slide shown in FIG. 1.

FIG. 12 is a cross-sectional view taken along line 12-12 of FIG. 11.

The electrical connector 10 receives a contact cavity 22 and a female electrical supply contact (not shown) that receive a female electrical signal contact 12 (see FIG. 2) inserted in the insertion direction indicated by arrow 11. An arm insulated housing 20 having a contact cavity 29 (see FIG. 3); A lance housing 40 adapted to fit inside the receiving cavity 24, 26 of the female housing 20; A dual-locking member 60 for securing the female contact 12 inserted into the contact cavity 22; And a cam slide 80 which allows the female housing 20 and the male housing 14 (FIG. 2) to engage with each other with only a slight effort. The electrical connector 10 also includes a waterproof gasket 100 disposed on the frame 33 of the female housing 20 in the cavity 26 between the lance housing 40 and the female housing 20. 2) and a wire cover 110 to prevent ingress of water inside and protect the bundled signal 16 connected to the arm signal contact 12 and the arm power supply contact. A rubber plug 18 is arranged around the wire 16 for waterproofing purposes (see Figure 2).

As can be seen in FIG. 2, a fixing recess 28 and a fixing lug 42 of the lance housing 40 for the purpose of fixing the lance housing 40 to the arm housing 20 of the arm housing 20. ) Is provided. In addition, the female contact 12 is secured to the contact cavity by the flexible housing lance 44 of the lance housing 40 and by the dual fastening member 60, so that the double fastening member 60 is in a fully fixed position. This ensures that the contact is retained in the housing when moved to.

Next, the arm housing 20 will be described with reference to FIGS. 3 to 5. As noted above, the arm housing 20 has a cavity 22 for signal contacts 12 and a cavity 29 for power contacts (not shown). In addition, slots 32a and 32b are provided on inner surfaces of the upper and lower walls 30a and 30b of the arm housing 20 to accommodate the arms 82a and 82b of the cam slide 80 (see FIG. 1). In the longitudinal direction of the upper and lower walls 30a and 30b of the arm housing 20, a confirmation recess 34 is provided to accommodate the confirmation lug 84 of the cam slide 80 (see FIG. 1). When the cam slide 80 is fully inserted into the arm housing 20, the confirmation lugs 84 are fully inserted into the confirmation recesses 34. Because of this, the operator can trace the position of the confirmation lug 84 by hand to determine whether the cam slide 80 is fully engaged with the arm housing 20 even when the electrical connector 10 is slightly outward. The arm housing 20 also has a fastening boss 36 fastened to the latching slot 112 of the wire cover 110 (see FIG. 1) to secure the wire cover 110 on the arm housing 20. do.

As mentioned above, the arm housing 20 has a locking depression 28 intended to engage with the latching lug 42 of the lance housing 40 on the frame 33 (see FIG. 2). It is provided for the formation of the locking depression 28 for forming the female housing 20 (the lower wall 30b has a similar opening 31 '). Typically, the stationary arm is formed as an integral part of the frame 33. However, when this is formed, molding marks remain on the outer surface of the frame 33. Since the outer surface of the frame 33 is used for the purpose of arranging the gasket 100 and for the purpose of waterproofing, such molding marks result in a decrease in the waterproofing. In order to prevent the deterioration of the waterproof property, an opening 31 is provided through which molded components are inserted to form a locking depression 28 on the outer surface of the frame 33, and coupled with the locking depression 28. The following latching arms are formed in the lance housing 40.

The lance housing 40 will be described with reference to FIGS. 6 to 8. As described above, the lance housing 40 is inserted into the lance housing accommodating cavities 24, 26 of the female housing 20 and the lance housing is inserted into the locking recess 28 and the lance of the female housing 20. It is fixed to the female housing by the latching lug 42 of the housing 40. Similar to the female housing 20, the lance housing 40 has a contact cavity 46 for signal contacts and a contact cavity 48 for power contacts. These contact cavities 46, 48 are respectively aligned with the contact cavities 22, 29 when the female housing 20 and the lance housing 40 are hooked together. In the lower part of the contact cavity 46, the hole 47 for a checker pin is formed (refer FIG. 6A). By inserting a checker pin (not shown) into the checker pin hole 47, it is possible to check whether the female contact 12 (see FIG. 2) is fully inserted into the cavity. Inside the contact cavity for large power contacts a housing lance 49 is formed for the purpose of retaining the power contact.

It will now be described how the planar component 68 of the dual fastening member 60 prevents the housing lance 49 from bending and further provides reliable maintenance of the power contact. As can be seen in FIGS. 1 and 6-8, the lance housing 40 is provided with guide slots 50, 52 for guiding the dual fastening member 60. The guide slot 50 is for guiding a portion of the dual fixing member 60 representing the contact fixing plate 64 in which the contact insertion opening 62 is positioned for the insertion of the contact 12. On the other hand, the guide slot 52 is a double fixing member 60 extending in the contact insertion direction (indicated by arrow 11 in FIG. 1) and in the reciprocating direction of the double fixing member 60 (indicated by arrow 66). ), The movement of which is limited to the transverse direction (indicated by arrow 67) relative to the contact insertion direction and the direction of movement. As will be described later, the plate component 68 of the dual fastening member 60 is inserted into the guide slot 52 even when the fastening member is in the temporary fastening position, which is double fastening member in the transverse direction (indicated by arrow 67). Lateral fixation of 60 means that the double fixation member 60 is excluded even when working in a temporary fixation position. In addition, the lance housing 40 has two latching arms 54 (see Fig. 7) located near the inlet of the guide slot 52, which latches the double fastening member (when the double fastening member is in the fully locked position). 60).

Next, the double fixing member 60 will be described with reference to FIGS. 9 and 10. The double fastening member 60 has a contact fixing plate 64 having a signal contact 12 (see Fig. 2) and openings 62 and 63 for insertion of a power contact and a contact insertion direction (indicated by arrow 11 in Fig. 1). And a flat component 68 extending in the direction of movement of the double fastening member 60 (indicated by arrow 66). The contact fixation plate 64 and the plate component 68 are located on a mutually transverse plane, and as noted above, the contact fixation plate 64 is guided by the guide slot 50 of the lance housing 40. (See FIG. 8), the plate component 68 is guided by the guide slot 52. When the plate component 68 is inserted into the guide slot 52, it is supported on both sides by the walls of the guide slot 52. Since the thickness of the plate component 68 is smaller than the length of the contact fixing plate 64 in the transverse direction, the dimension error of the thickness of the plate component 68 produced at the time of manufacture is the transverse direction (arrow) of the contact fixing plate 64. Much larger than the dimensional error of the length). There is a risk that, without the plate component 68, the instability of the contact fixation plate 64 in the transverse direction due to dimensional error may be too large. As a result, it is impossible to precisely align the contact insertion openings 62 and 63 and the contact cavities 22 and 29, which are driven by the power contact and the female contact inserted by the automatic contact inserter (not shown). 12) (see FIG. 2) may cause interruption of the contact insertion operation due to the fact that it engages with the dual fastening members 60 upon insertion of the contact cavities 22 and 29. However, the dual fastening member 60 has a plate component 68 oriented in the direction of rotation relative to the contact fixing plate 64 in addition to the contact fixing plate 64. As indicated above, since the dimensioning error of the plate component 68 is much smaller than that of the contact fixation plate 69, and the plate component is supported on the weak side by the walls of the guide slot 52 in the temporary fixing position. Thus, the dual fastening member 60 is fixed in a static and stable position, so that the female contact 12 (see FIG. 2) and the power contact are made through the contact cavities 22 and 29, and the contact fixing plate 64 is provided. Through the openings 62, 63 and into the contact cavities 46, 48.

The plate component 68 has a lug 70 (see FIG. 9) for the purpose of securing the double fastening member 60 to a fully fixed position, with the latch arm 54 in the fully fastened position of the double fastening member 60. (FIG. 7), thereby securing the double fixing member 60 to the fully fixed position. In addition, the plate component 68 has two recesses 72 on the front and rear portions of the plate component 68 oriented in the contact insertion direction (arrow 11). In the temporary locking position of the double fastening member 60, the housing lance 49 (FIG. 6) of the lance housing 940 (FIG. 1) is fitted with these recesses 72. As shown in FIG. The housing lance 49 of the lance housing 40 is bent when the female contact 12 (FIG. 2) is inserted into the double fastening member 60 in the temporary fixing position, so that the female contact 12 is fully inserted. To be inserted, the recess 12 and the housing lance 49 are dropped such that the housing lance 49 can no longer bend. As a result, the fully inserted contact 12 can be held by the housing lance 44 such that it cannot be withdrawn from the cavity. In addition, the plate component 68 has a cross-member 74 that prevents the male housing 14 from engaging the female housing 20 (see FIG. 2) upon contact insertion.

The cam slide 80 will be described with reference to FIGS. 11 and 12. The cam slide 80 has two planar arms 82a and 82b. On the surfaces of the arms 82a and 82b facing each other, cam grooves 86a, 88a, 86b, and 88b for receiving the cam followers 14 located on the outer surface of the male housing 14 (see Fig. 2) are formed. In the openings of the cam grooves 86a and 86b, a boss 90 is formed to temporarily fix the male housing 14 in the temporary fixing position so as to prevent its separation. On the sides of the arms 82a and 82b facing the wire cover 110 at approximately the center of the elongated side, a latching arm 92 extending in the retirement direction (arrow 94) of the cam slide 80 is provided. The tips of these latching arms 92 have a front face 92a disposed perpendicular to the arm body. When the cam slide 80 is in the temporary fixing position, the front face 92a is snapped into the notches 38 of the arm housing 20 provided for the temporary engagement, so that the cam slide 80 is removed from the arm housing 20. Prevents pulling. When the cam slide 80 is in the fully locked position, the front face 92a is snapped into the notch 39 of the arm housing 20 to prevent the cam slide 80 from moving from the fully inserted position.

Since the plate component 68 of the dual fastening member 60 of the electrical connector is held in the guide slot 52 of the lance housing 40, the lateral shaking of the double fastening member is eliminated, and thus the female contact is contacted with the contact cavity. It can be inserted into the part smoothly. In addition, the plate component prevents bending of the housing lances that hold the contacts in the cavity, thereby preventing the contact of even large dimension contacts.

Claims (7)

Insulating housings 20, 40 having contact cavities 22, 29, 46, 48 for receiving electrical contacts 12, housing lances 44, 49 for retaining electrical contacts within the contact cavities; An electrical connector including a double fixing member (60) movably installed in the guide slots (50, 52) of the insulating housing to move in a direction transverse to the contact insertion direction of the electrical contact into the contact cavity; Wherein the dual fastening member 60 comprises a plate component 68 and a contact fixing plate 64, the plate component 68 and a contact fixing plate 64, and the plate component 68 is Extending in the direction of contact insertion and in the direction transverse to the contact fixation plate 64, wherein the guide slots 50, 52 are portions 50 and the flat component (e) from which the contact fixation plate 64 extends; 68) is placed and reputation And having a portion 50 for fastening the component 68 laterally so as to prevent lateral shaking of the double holding member 60 when the double holding member moves between the contact insertion position and the contact holding position. Electrical connector. 2. The electrical connector as claimed in claim 1, wherein said insulating housing comprises a female insulating housing (20), said lance housing being fixed to said female housing. 3. Electrical connector according to claim 2, characterized in that a housing lance (44, 49) is located on the lance housing (40). 3. The frame of claim 2, wherein the arm insulation housing 20 extends along both sides of the frame 33 and between the arm insulation housing 20 and the lance housing 40. Electrical connector, characterized in that it comprises a sealing gasket (100) located on said frame (33). The electrical connector as claimed in claim 1, wherein the flat component (68) comprises a recess (72) for preventing the bending of the housing lance (49). The electrical connector (100) according to claim 1, wherein the insulating housing (20) includes slots (32a, 32b) and along the slots (82a, 82b) of the cam slide (80) to move the electrical connector for mating the electrical connector ( Electrical connector). 2. The electrical system of claim 1, wherein the insulating housings 20, 40 and the double fastening member 60 have latching members 54, 70 for latching the double fastening member 60 to a contact fixing position. connector.