JPH0227509Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a receptacle for an electrical connector.

[Conventional technology]

2.16 mm pitch shielded plugs and receptacles known as Centronics specification connectors are widely used for input/output devices of microcomputers and measurement equipment. The structure of this receptacle is that multiple pairs of female terminals are assembled into an insulator housing, the bar-shaped portion of the female terminal is soldered to a through hole in a printed circuit board, and the contact portion of the female terminal is surrounded by a shield shell. The shell is connected to a ground point provided on the circuit board, and the spring latch, which is swingably attached to the shield shell, engages with the engaging portion on the plug side and connects the shield on the plug side and the shield shell on the receptacle side. It has a structure that causes an electrical short circuit.

The specifications of Centronics' connectors are standardized to ensure compatibility, so the dimensions of the main parts are strictly regulated. FIG. 7 is an exploded perspective view of a conventional receptacle manufactured by Centronics, and it can be seen that it is composed of many parts. This receptacle is assembled by hand, and the assembly process will be described below with reference to Figures 7A, B and C. In order to make it easier to understand the mutual relationship of each part, a dot-dashed line is drawn, and the symbols, ', and
7A, B and C are associated with each other.

First, the contact parts 751 and 761 of the female terminals 75 and 76 are housed and fixed in a platform part 741 that is integrally molded with the insulator housing 74, and the connection part with the plug (not shown) is connected as a whole. and then attach a shield shell 77 to the platform part 741 of the housing.
After covering, a pair of end disc latches 7
The holes 8 and 78' are connected to the openings 77 of the shield shell 77.
1,771' and overlap them, then insert eyelets 79, 79' into the openings 771, 771', and swage them together to complete the housing 74, shield shell 77, and end disk latch 7.
8, 78' and then attach spring latch 7 to the pivot of end disk latch 78, 78'.
Insert both end shafts of 01 and 701'. Next, after bending the rod-shaped portions 752 of the terminals 75 and 76, the adapter 73 is assembled to the housing 74 in the direction shown, and then the pair of gland fittings 72 and 72' are inserted into the grooves 731 and 73 of the adapter 73 in the direction shown. 731' and then tighten the whole thing with screws 702, 702' and nuts 71, 71' to complete the assembly of the receptacle. The other blank holes 721 and 721' provided in the ground fittings 72 and 72' are screwed to the ground point of a circuit board (not shown) to attach the receptacle to the circuit board and connect the shield and spring latch to the ground point. .

[Problem that the invention attempts to solve]

The dimensions of the main parts of the connectors specified by Centronics are strictly standardized so that the plug and receptacle can be freely combined regardless of the manufacturer, so the space available inside the receptacle is extremely limited. As shown in FIG. 7, the structure was almost the same regardless of the manufacturer. However, the structure of such conventional receptacles is
As shown in the figure, the number of parts was large, and therefore there were many assembly steps, and parts management and process management were also complicated and time-consuming. An object of the present invention is to provide a receptacle that has a small number of parts and is easy to assemble.

[Means for solving problems]

The receptacle of the present invention includes a housing having a platform part that accommodates multiple pairs of terminals and is provided with a guide groove for the plug, a shield shell that covers the platform part and has a pair of mounting legs, and a plug side A receptacle comprising a pair of spring latches for locking the housing, a pair of grounding fittings for integrally connecting the housing, the shield shell, and the spring latch, the integrally molded The housing includes a pair of shield mounting leg insertion grooves that are provided adjacent to the platform and into which the shield mounting legs are inserted, and a pair of shield mounting leg insertion grooves that penetrate from the side surface of the housing into the shield mounting leg insertion grooves. The grounding fitting has a guide groove and a pair of insertion holes through which the grounding means of the grounding fitting is inserted, and the grounding fitting is inserted into the bearing part of the spring latch and the grounding fitting guide groove to attach the shield. an upper cantilever engaging the leg; a lower cantilever engaging an engagement surface of the housing for cooperating with the upper cantilever to couple the shield leg to the housing; It is characterized by comprising a stopper provided at the free end of the support beam for restricting insertion of the grounding fitting, and a grounding means provided extending from the stopper and connected to the grounding point of the circuit board.

〔Example〕

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a partially cutaway perspective view of a receptacle according to an embodiment of the present invention, in which a plurality of pairs of female terminals 1 are shown.
Housing 20 containing 5, shield shell 3
0, a pair of grounding fittings 40, 40' and a pair of spring latches 50, 50',
Details of each component are detailed below.

FIG. 3 shows a partially cutaway perspective view of a shield shell 30 that is integrally formed by pressing a metal plate, and shows a pair of square shield mounting legs 32, 32' at both ends of the base of the shield part 31. Further, a pair of mounting guide legs 33, 33' are provided in parallel with the extension of the mounting guide legs 33, 33'. Guide legs 33, 33'
The length is slightly longer than the mounting legs 32, 32'. The shield portion 31 is formed into a trapezoidal shape as a whole, and its upper surface is open so as not to prevent insertion of a mating plug (not shown).

FIG. 2 is a partially cutaway perspective view of the receptacle housing 20 integrally molded with plastic material, and shows the female terminals 75 and 75 shown in FIG. 7B.
A plurality of pairs of female terminals similar to 76 are incorporated. A platform portion 22 protruding from the base portion 21 of the housing 20 has a guide groove 211 for accommodating and holding the contact portion of the female terminal and guiding the plug.
Its outer shape has a shape that fits into the inner wall of the shield part 31. Adjacent to both longitudinal ends of the platform portion 22, a pair of vertical grooves, that is, shield mounting leg insertion grooves 2 are provided.
3 are provided on the base 21, and a pair of horizontal grooves penetrating from the side surface of the base 21 of the housing 20 to one side wall of the shield mounting leg insertion groove 23, that is, the guide grooves 24, 24 of the grounding fitting (FIG. 4). ' is provided. The depth of the shield mounting leg insertion groove 23 should be sufficient to accommodate the shield mounting leg 32, and the bottom surface of the guide groove 24 should substantially match the bottom surface 63 of the assembled shield mounting leg 32. (Figure 6) requires caution. shield ciel 3
A pair of guide holes 25 and 25' for inserting the guide legs 33 provided in the shield mounting leg insertion groove 23 are provided in the base 21 adjacent to the shield mounting leg insertion groove 23. A bracket portion 26 for mounting the housing 20 to a printed circuit board (not shown) located perpendicular to the plane of the base 21 of the housing 20 includes a grounding fitting 4.
0,40' ground bar 48,48' (Figure 4)
a pair of insertion holes 27, 27' through which the
Holes 28, 28' for mounting screws on the circuit board are provided. If it is desired to screw the screw to the ground point of the circuit board, the ground bar 48 can be omitted and a hole corresponding to the hole 28 can be provided in the grounding fitting instead. A number of grooves 29 provided in the bracket portion 26 hold the bent legs of the female terminals and prevent them from shorting together.

Figures 4A and 4B show perspective views of a pair of grounding fittings 40, 40' for electrically connecting the parts of the receptacle to be placed at ground potential and for joining together the parts making up the receptacle. It should be noted that although the individual shapes of the grounding fitting 40 of FIG. 4A and the grounding fitting 40' of FIG. 4B are the same, their structures are mirror images. Since the grounding fitting 40 of FIG. 4A is used on the right side of the housing of FIG. 2, and the grounding fitting 40' of FIG. 4B is used on the left side of the housing of FIG. Although the two elements are distinguished from each other, in order to avoid redundancy, explanations will be made using FIG. 4A unless there is a problem. In Fig. 4A, a grounding fitting 40 integrally formed from sheet metal material by press working is shown.
A pair of bearing parts 42, 42 are provided on the upper part of the base part 41 for rotatably receiving a pair of shaft parts 52, 52 of a spring latch 50 shown in FIG. As shown in the figure, the base portion 41 of the grounding fitting 40 has a U-shape as a whole like a tuning fork, and a pair of cantilevers, that is, an upper cantilever beam 4, forms a curved portion of the base portion 41.
3 and a lower cantilever 44, each of which is provided with anti-slip protrusions 45 and 46 facing each other. The free end of the lower cantilever beam 44 is approximately flush with the surface of the lower cantilever beam 44.
A stopper 47 having a surface at an angle of 90° is provided,
A ground bar 48 is provided at the other end of the stopper 47 and has a surface that is perpendicular to the surface of the stopper 47 and parallel to the cantilever beam. The ground bar 48 can be omitted and replaced with a blank hole for screwing to the ground point of the circuit board. The height of the upper cantilever 43 of the grounding fitting 40 is made approximately equal to the depth of the guide groove 24 of the housing 20 so that the bearings 42, 42 are exposed on the upper surface of the base 21 of the housing 20. The width of the U-shaped groove between the upper cantilever 43 and the lower cantilever 44 will be described later. As shown in the figure, the ground bar 48 has a groove approximately in the center, and has a trapezoidal engaging portion 49 at its tip for press-fitting and connecting to a through-hole at a ground potential of the circuit board. The already mentioned spring latch of FIG. 5 has a loop 51 for engaging the locking part on the plug side, and the constricted portion of the loop 51 engages resiliently in a groove provided on the plug side.

The steps of manufacturing the receptacle 10 of the present invention by combining the parts described above are shown in FIGS. 1 to 6.
This will be explained below with reference to the figures. FIG. 6 is a diagram showing the relationship between the grounding fitting 40 and the housing 20 by cutting the receptacle shown in FIG. 1 along the line A-A. First, the conventional terminals 75 and 76 shown in FIG.
A plurality of pairs of terminals 15 similar to the above are inserted and assembled from the bottom of the housing 20. Next, the shield shell 30 is placed over the platform part 22 of the housing 20,
Fit the pair of guide legs 33 of the shield shell 30 into the guide holes 25 of the housing 20, then lower the shield shell 30 and insert the shield shell mounting legs 32 into the pair of shield shell mounting leg insertion grooves 2.
3 and push it in until the bottom surface of the shield shell 30 reaches the top surface of the base 21 of the housing 20, completing the assembly of the housing 20 and the shield shell 30. Next, insert the ground bar 48 of the grounding fitting 40 into the insertion hole 27 of the housing 20 from the side of the housing 20 and pushing it further to insert the tip 401 of the upper cantilever 43 of the grounding fitting 40 into the guide groove 24 of the housing 20. do. Guide groove 2
When the upper cantilever 43 guided by the wall surface of 4 is pushed further, the anti-slip protrusion 45 of the upper cantilever 43 advances along the bottom part 62 of the guide groove 24, and the bottom part 6
It rests on the bottom surface 63 of the mounting leg 32, which is on the same plane as the mounting leg 2. (See Figure 6) When the grounding fitting 40 is further pushed in, the upper cantilever beam 43 is connected to the bottom part 62 and the bottom part 6
3 and is pushed forward, while the anti-slip protrusion 46 of the lower cantilever 44 engages with the engagement surface 61 of the housing 20. When the grounding fitting 40 is further pushed in until the stopper 47 of the grounding fitting 40 hits the wall surface of the bracket portion 26 of the housing 20, the anti-slip protrusion 45 of the upper cantilever beam 43 bites into the rear bottom surface portion 64 of the guide groove 24. At the same time, lower cantilever beam 4
The anti-slip protrusion 46 of 4 is also attached to the engagement surface 6 of the housing 20.
1 to connect the grounding fitting 40, shield mounting leg 32, and housing 20. In this way, the length and spacing of the upper cantilever beam 43 and lower cantilever beam 44 of the grounding fitting 40 and the bottom surface portion 6 of the guide groove 24 are determined.
2, 64 and the spacing between the engaging surfaces 61, the housing 20 and the shield shell 3 can be
A combination with 0 can be achieved. As shown in FIG. 6, the anti-skid projections 45 and 46 are preferably serrated in shape, and a small ridge 402 provided adjacent to the anti-skid projection 45 is aligned with the bottom surface 63 of the mounting foot 32. Preferably, the structure is as follows. Although one of the grounding metal fittings 40 has been described above, the other grounding metal fitting 40' is also assembled in exactly the same process. Finally, the shaft portion 52 of the spring latch is inserted into the bearings 42, 42' of the metal fittings 40, 40' by compressing the loop portions 51 of 50, thereby completing the assembly.

[Effect of idea]

As explained above, the receptacle connector of the present invention has a structure that reduces the number of parts and simplifies assembly without compromising compatibility with the receptacles specified by Centronics. This simplifies the process control for manufacturing receptacles, which has great practical effects.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway perspective view of an embodiment of the present invention, Fig. 2 is a partially cutaway perspective view of the housing of the present invention, and Fig. 3 is a partially cutaway perspective view of the shield shell. 4A and 4B are perspective views of an embodiment of the grounding fitting, FIG. 5 is a perspective view of a spring latch, and FIG. 6 is a perspective view of the receptacle shown in FIG. Sectional view showing the metal fittings, No. 7
Figures A, B, and C are diagrams showing the parts of a conventional Centronics receptacle and explaining its assembly. 15, 75, 76... Female terminal, 20... Housing, 22... Platform, 23... Shield mounting leg insertion groove, 24... Grounding metal guide groove, 27... Ground bar insertion hole, 30... Shield Ciel, 32
...Shield mounting leg, 40, 40'...Grounding bracket,
43, 43'... Upper cantilever beam, 46, 46'... Lower cantilever beam, 47, 47'... Stopper, 48, 4
8'...Ground bar, 50...Spring latch.

Claims (1)

[Claims for Utility Model Registration] A housing having a pedestal portion that accommodates a plurality of pairs of terminals and is provided with a guide groove for a plug; a shield shell that covers the pedestal portion and has a pair of mounting legs; A receptacle connector consisting of a pair of spring latches for locking with the plug side, and a pair of grounding fittings for integrally connecting the housing, the shield shell, and the spring latch, integrally molded. The housing has a pair of shield mounting leg insertion grooves provided adjacent to the platform and into which the shield mounting legs are inserted, and a pair of shield attachment leg insertion grooves that penetrate from the side surface of the housing into the shield attachment leg insertion grooves. a pair of grounding metal guide grooves;
The grounding fitting has a pair of insertion holes through which the grounding means of the grounding fitting are inserted, and the grounding fitting has a bearing part of the spring latch and an upper piece that is inserted into the grounding fitting guide groove and engages with the shield mounting leg. a lower cantilever engaging an engagement surface of the housing for cooperating with the upper cantilever to couple the shield leg to the housing; a lower cantilever at a free end of the lower cantilever; a stopper provided to restrict insertion of the grounding fitting;
A receptacle connector comprising a grounding means extending from the stopper and connected to a grounding point of a circuit board.