CN2744021Y - Shielding shell and connector with the shielding shell - Google Patents

Abstract

The utility model discloses a shield shell and have this shield shell's connector, shield shell includes an outer shield shell, and this outer shield shell both sides wall downwardly extending respectively extends one and extends the wall, is equipped with first buckling parts on the extension wall. The two sides of the rear wall of the outer shielding shell are respectively bent forwards to form a bent wall, the outer wall surface of the bent wall is abutted against the inner wall surface of the extension wall, and a second buckling part buckled with the first buckling part and a fixing pin embedded with an external circuit board are arranged on the bent wall. The utility model discloses an outside diastole of wall of buckling and extending the inside backstop of wall make two buckling parts firm, reliable lock all the time, make from this shielding housing is in firm, reliable lock state all the time and unlikely deformation inefficacy.

Description

Shielding shell and connector with the shielding shell

Technical field

The utility model relates to a shielding shell and a connector with the shielding shell, in particular to a shielding shell with reliable buckling, which is stable without deformation and failure, and a connector with the shielding shell.

Background technique

The electronic connector is a component that electronic engineers and technicians often come into contact with. Its function is very simple, that is, to build a communication bridge between the blocked circuit or the isolated circuit, so that the current can flow, thereby realizing the described intended function of the circuit.

A relatively common electronic connector includes a plastic shell, which houses a plurality of terminals, and covers a shielding shell on the outside. The two side walls of the shielding shell respectively extend downwards with an extension wall, and each extension wall defines a fastening hole, and each extension wall extends downwards with a fixing foot, which is embedded and fixed on an external circuit board. Accordingly, the existing electronic connector assembly is positioned on the circuit board. Both sides of the rear wall of the shielding shell are respectively bent forward to extend a bent wall, and each bent wall protrudes inward to form a fastening block, and the inner wall surface of the bent wall is close to the outer wall surface of the corresponding extension wall, The fastening blocks are correspondingly embedded in the fastening holes inwardly, thereby fastening the shielding shell into one body to accommodate and position the plastic shell.

However, the bending wall of the above-mentioned existing shielding shell has a certain elastic recovery force due to the bending molding and forms a tendency to expand outward, so that the existing electronic connector with this design is very easy to be damaged due to the force applied during assembly. Improperly deforming and expanding the bent wall of the shielding shell outwards, so that the buckling block of the bent wall is separated from the buckling hole of the extension wall, and the existing shielding shell cannot be firmly and reliably buckled together .

Utility model content

One of the purposes of the present utility model is to provide a shielding shell for the above defects, which can be firmly and reliably fastened together without deformation and failure.

The second purpose of the utility model is to provide a connector with a shielding shell, the shielding shell of the connector can be firmly and reliably fastened together without deformation and failure.

In order to achieve one of the above objectives, the utility model provides a shielding shell, comprising an outer shielding shell, the two side walls of the outer shielding shell respectively extend downwards with an extension wall, and each extension wall is provided with a first In the fastening part, each extending wall extends downwards with a fixed foot, and the two sides of the rear wall of the outer shielding shell respectively bend forward to form a bent wall, and each bent wall is provided with a second buckling part, The outer wall surface of the bending wall and the inner wall surface of the extension wall correspond to abut against each other, and the first buckling part and the second buckling part correspond to buckling.

In order to achieve the second objective above, the utility model provides a connector with the above-mentioned shielding shell, the connector further includes a plastic shell, the inside of the plastic shell holds a number of terminals, and the outside of the plastic shell covers the shielding shell. case.

As an improvement of the present invention, the first fastening portion of the above-mentioned shielding case is a fastening hole, and the second fastening portion is correspondingly a fastening block protruding outward.

As an improvement of the present invention, the first fastening portion of the above-mentioned shielding case is an inwardly protruding fastening block, and the second fastening portion corresponds to a fastening hole.

As an improvement of the present invention, the above-mentioned shielding case further includes an inner shielding case, and the outer shielding case covers the outside of the inner shielding case.

As an improvement of the utility model, the inner shielding shell of the above-mentioned shielding shell is provided with several cantilever shrapnels, the free ends of these cantilever shrapnels bend and protrude toward the inside of the inner shielding shell, and the outer shielding shell corresponds to Each cantilever elastic piece of the inner shielding shell is respectively provided with a retraction hole.

As an improvement of the present utility model, a limiting groove is provided on the outer surface of the plastic housing of the above-mentioned connector, the front end of the limiting groove is closed, and the rear end communicates with the outside world. The limiting piece is embedded in the limiting groove with a downward slope.

As an improvement of the present utility model, the front end of the above-mentioned connector plastic housing protrudes forward to form a pair of side-by-side bottom plates, a positioning guide groove is formed between the two bottom plates, and the rear end of the positioning guide groove is closed. The front end communicates with the outside world, and a limiting column extends downward from the bottom wall of the inner shielding shell, which is correspondingly placed in the positioning guide groove.

As an improvement of the present invention, the front end of the plastic housing of the above-mentioned connector protrudes forward with a tongue plate, and several terminal slots are opened on the tongue plate to respectively accommodate the above-mentioned terminals. A bottom plate protrudes forward to form a bottom plate, the bottom plate is located under the tongue plate and forms a first engaging groove with the tongue plate, the front end of the top surface of the bottom plate is recessed downward to form a second engaging groove, and the rear end of the first engaging groove is closed , the front end communicates with the outside world and the second engaging groove, the bottom wall of the inner shielding shell is placed in the first engaging groove, and the bottom wall of the outer shielding shell is placed in the second engaging groove.

As mentioned above, the bending wall of the outer shielding shell of the shielding shell of the present invention abuts and buckles outwards with the extension wall. When the fixing feet of the outer shielding shell are inserted on the external circuit board, the bending wall The outer relaxation and the inward stop of the extension wall make the first fastening part and the second fastening part firmly fasten, so that the outer shielding shell is always in a stable and reliable fastening state without deformation and failure . At the same time, the inside of the outer shielding shell of the utility model tightly covers the inner shielding shell, thereby increasing the strength of the shielding shell so that it can withstand large Insertion force without deformation and failure.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail.

FIG. 1 is a three-dimensional assembled view of a connector with a shielding case of the present invention.

FIG. 2 is a three-dimensional exploded view of the connector with a shielding case of the present invention.

FIG. 3 is another perspective exploded view of the connector with shielding case of the present invention.

FIG. 4 is a perspective view of the outer shielding shell applied to the connector with shielding shell of the present invention before assembly.

The reference signs of each component in the figure are as follows: 100. Connector, 20. Plastic shell, 21. Limiting groove, 22. Tongue plate, 23. Terminal groove, 24. Bottom plate, 25. Notch, 26. Positioning guide Slot, 27. First engaging groove, 28. Second engaging groove, 40. Terminal, 60. Inner shielding shell, 62. Inserting space, 64. Cantilever shrapnel, 66. Limiting piece, 68. Limiting position Column, 80. Outer shielding shell, 81. Clamping space, 82. Retraction hole, 83. Extended wall, 84. Fastening hole, 85. Fixed foot, 86. Connecting piece, 87. Bending wall, 88. Fastening piece.

Detailed ways

In order to describe the technical content, structural features, achieved goals and effects of the present utility model in detail, the following will be described in detail in conjunction with the embodiments and accompanying drawings.

Please refer to FIG. 1 to FIG. 3 , the shielding shell of the present invention includes an outer shielding shell 80 which wraps an inner shielding shell 60 inside.

As shown in FIG. 2 and FIG. 3 , an insertion space 62 is formed inside the inner shielding shell 60 , and the front and rear ends of the insertion space 62 are connected with the outside world. The top wall of the inner shielding shell 60 is provided with a pair of cantilever shrapnel 64, and these cantilever shrapnel 64 are located on both sides of the front end of the top wall and extend longitudinally. Correspondingly, and extend downwards into the insertion space 62 . The rear end of the bottom wall of the inner shielding shell 60 is hollowed out, and a pair of cantilever springs 64 are provided at the front end of the bottom wall. A limiting post 68 extends vertically downwards from the rear edge of the bottom wall approximately in the middle. The two side walls of the inner shielding shell 60 are respectively provided with a cantilever elastic piece 64 , which is slightly longer than the cantilever elastic piece 64 disposed on the top wall and the bottom wall. The free ends of these cantilever elastic pieces 64 are all bent and protruded toward the insertion space 62, and are used to abut against and clamp a shielding shell of a docking connector inserted into the insertion space 62 (not shown in the figure). This achieves a retaining fit between the two connectors.

Please also refer to Fig. 4. The shape of the outer shielding shell 80 corresponds to that of the inner shielding shell 60, and a clamping space 81 is formed inside. The rear wall of 80 is closed for clamping and nesting the inner shielding shell 60 . The top wall, the bottom wall and the two side walls of the outer shielding shell 80 are respectively provided with a number of retraction holes 82 corresponding to the free ends of the cantilever springs 64 of the inner shielding shell 60, which are used to provide shielding between the cantilever springs 64 and the docking connector. The retraction space required when the shell is clamped against the top. The rear end of the bottom wall of the outer shielding shell 80 is hollowed out, and an extension wall 83 is extended downwards from the rear ends of the two side walls respectively. The rear end of each extension wall 83 is provided with a fastening hole 84 as a first fastening part, extending The front and rear ends of the bottom edge of the wall 83 respectively protrude downward to form a fixing foot 85 for fixing the shielding case of the present invention on an external circuit board (not shown in the figure). The rear wall of the outer shielding shell 80 is connected to the top wall through a pair of connecting pieces 86. Before assembly, as shown in FIG. 4, it is parallel to the top wall; after assembly, as shown in FIG. Vertically, two sides of the rear wall near the bottom edge respectively bend forward to extend a bent wall 87 , and each bent wall 87 protrudes outward to form a fastening block 88 serving as a second fastening portion.

Please refer to FIG. 1 again, the connector 100 of the present invention with the above-mentioned shielding shell further includes a plastic shell 20, and the plastic shell 20 is inserted into the insertion space of the inner shielding shell 60. 62, and hold a number of terminals 40 in it.

As shown in FIGS. 2 and 3 , a pair of limiting grooves 21 are provided on the top surface of the plastic housing 20 . The pair of limiting grooves 21 are located on both sides of the top surface and extend longitudinally. The front end is closed and the rear end communicates with the outside. A tongue plate 22 and a pair of bottom plates 24 arranged side by side below the tongue plate 22 extend horizontally forward from the front end of the plastic shell 20 . The tongue plate 22 defines a plurality of terminal slots 23 longitudinally for embedding corresponding terminals 40 . A positioning guide groove 26 is formed between the two bottom plates 24, the rear end of the positioning guide groove 26 is closed, and the front end communicates with the outside world. A first engaging groove 27 is formed between the bottom plate 24 and the tongue plate 22, and the front end of the top surface of the bottom plate 24 is further recessed downward to form a second engaging groove 28. The rear end of the first engaging groove 27 is closed, and the front end is connected with the The outside world communicates with the second engagement groove 28 . A notch 25 is formed on the rear end of the two side surfaces of the plastic shell 20 adjacent to the bottom edge for snapping and positioning of the outer shielding shell 80 .

The assembly process of the connector 100 of the present utility model is as follows:

First, several terminals 40 are correspondingly embedded in the terminal slots 23 of the plastic housing 20, and then the plastic housing 20 is aligned with the insertion space 62 of the inner shielding housing 60 and the inner shielding housing 60 is pushed backward. At this time, The limiting piece 66 of the inner shielding shell 60 slides along the top wall of the plastic shell 20 and is embedded in the limiting groove 21, thereby limiting the forward movement of the inner shielding shell 60 relative to the plastic shell 20, the limiting column 68 and the inner The bottom wall of the shielding shell 60 is respectively placed in the positioning guide groove 26 and the first engaging groove 27 of the plastic shell 20 , thereby restricting the backward movement of the inner shielding shell 60 relative to the plastic shell 20 .

Next, align the inner shielding case 60 with the clamping space 81 of the outer shielding case 80 and push the outer shielding case 80 backward. The wall slides so that the bottom wall of the outer shielding shell 80 is placed in the second engaging groove 28 of the plastic shell 20 , thereby restricting the backward movement of the outer shielding shell 80 relative to the plastic shell 20 .

Finally, the rear wall of the outer shielding shell 80 is bent downward, and each bent wall 87 extends into the notch 25 of the plastic shell 20 correspondingly. On the inner wall, the fastening block 88 of the bent wall 87 is outwardly embedded in the fastening hole 84 of the extension wall 83 , thereby restricting the forward movement of the outer shielding shell 80 relative to the plastic shell 20 .

As mentioned above, the fastening block 88 of the rear wall of the outer shielding shell 80 of the shielding shell of the present utility model protrudes outward and is embedded in the fastening hole 84 of the two side walls, when the fixing feet 85 of the two side walls are inserted When on the external circuit board, the buckling block 88 is always embedded in the buckling hole 84 through the outward expansion of the bent wall 87 and the inward stop of the extension wall 83, so that the outer shielding shell 80 is always in the position. Stable and reliable fastening state without deformation and failure. At the same time, the inside of the outer shielding shell 80 tightly wraps the inner shielding shell 60, thereby increasing the strength of the shielding shell so that it can withstand a relatively large plug-in and mating process with the mating connector. Pulling force without deformation and failure.

However, the content disclosed above is only one of the preferred embodiments of the present utility model, and other equivalent technical means that can achieve the purpose of the present utility model can also be used in the specific design, for example, only the outer shielding shell is designed 80 and the inner shielding shell 60 is omitted, and while the inner shielding shell 60 is omitted, the cantilever spring 64 is set on the outer shielding shell 80; or the fastening hole 84 as the first fastening part is set On the bending wall 87 , a fastening block 88 serving as a second fastening portion is correspondingly disposed on the extension wall 83 and protrudes inward. The replacement of such equivalent technical means shall still belong to the scope of the claims of the present utility model.

Claims (12)

1. A shielding shell, comprising an outer shielding shell, an extension wall extends downwards from both side walls of the outer shielding shell, each extension wall is provided with a first fastening portion, and each extension wall and A fixed foot extends downwards, and a bent wall is bent forward on both sides of the rear wall of the outer shielding shell, and each bent wall is provided with a second fastening part, and the first fastening part and the second fastening part The two fastening parts correspond to fastening, and the feature is that: the outer wall surface of the bending wall and the inner wall surface of the extension wall correspond to abutting against each other. 2 . The shielding case according to claim 1 , wherein the first fastening portion is a fastening hole, and the second fastening portion is correspondingly a fastening block protruding outward. 3 . 3 . The shielding case as claimed in claim 1 , wherein the first engaging portion is an inwardly protruding engaging block, and the second engaging portion is correspondingly a engaging hole. 4 . 4 . The shielding case according to claim 1 , further comprising an inner shielding case, the outer shielding case covering the outside of the inner shielding case. 5. The shielding case according to claim 4, wherein the inner shielding case is provided with a plurality of cantilever shrapnels, the free ends of the cantilever shrapnels bend and protrude toward the inside of the inner shielding case, and the outer shielding case Each cantilever elastic piece of the body corresponding to the inner shielding shell is respectively provided with a retraction hole. 6. A connector with the shielding shell as claimed in claim 1, further comprising a plastic shell, the plastic shell holds a plurality of terminals inside, and covers the shielding shell on the outside. 7 . The connector as claimed in claim 6 , wherein: the rear ends of the two sides of the plastic housing respectively define a notch, and the bent walls respectively protrude into the corresponding notch. 8 . 8 . The connector according to claim 6 , further comprising an inner shielding shell, the inner shielding shell accommodates the plastic shell, and the outer shielding shell covers the outer shielding shell. 9. The connector according to claim 8, characterized in that: the inner shielding shell is provided with a number of cantilever shrapnels, the free ends of the cantilever shrapnels bend and protrude toward the inside of the inner shielding shell, and the outer shielding shell Each cantilever elastic piece of the body corresponding to the inner shielding shell is respectively provided with a retraction hole. 10. The connector according to claim 8, characterized in that: the outer surface of the plastic shell is provided with a limiting groove, the front end of the limiting groove is closed, and the rear end communicates with the outside world, and the inner shielding shell corresponds to the The limiting groove is provided with a limiting piece, which is embedded in the limiting groove with a downward slope. 11. The connector according to claim 8, characterized in that: the front end of the plastic housing protrudes forward to form a pair of side-by-side bottom plates, a positioning guide groove is formed between the two bottom plates, and the positioning guide groove The rear end is closed, and the front end communicates with the outside world. A limiting column extends downward from the bottom wall of the inner shielding shell, and is correspondingly placed in the positioning guide groove. 12. The connector according to claim 8, wherein a tongue protrudes from the front end of the plastic shell, and a plurality of terminal grooves are opened on the tongue, respectively corresponding to accommodate the above-mentioned terminals. The front end surface also protrudes forward to form a bottom plate, which is located below the tongue plate and forms a first engaging groove with the tongue plate. The front end of the top surface of the bottom plate is recessed downward to form a second engaging groove. The end is closed, the front end communicates with the outside world and the second engaging groove, the bottom wall of the inner shielding shell is placed in the first engaging groove, and the bottom wall of the outer shielding shell is placed in the second engaging groove.

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