CN207368346U - electrical connector - Google Patents

Abstract

The utility model discloses an electric connector, this electric connector includes: the insulating body, set up terminal group on the insulating body, cover interior metal casing and fixed be built by contract in the outer metal casing in interior metal casing upper end and outside on the insulating body, be formed with between this interior metal casing and the insulating body and to inserting the space, this terminal group is including at least one ground terminal, interior metal casing shaping has at least one elasticity to extend and touches the arm, and this elasticity extends to touch the arm and ground terminal and supports to press and switch on. Because the utility model provides an inner metal shell shaping has at least one elasticity to extend and touches the arm, and this elasticity is extended and is touched the arm and supports to press with the ground terminal and switch on to this shielding efficiency that can strengthen the metal-back shell structure, the order the utility model discloses an interference killing feature is stronger, and communication quality is better, does benefit to and improves market competition.

Description

electrical connector

Technical field:

The utility model relates to the technical field of connector products, in particular to an electrical connector.

Background technique:

The main supporting fields of electrical connectors include transportation, communication, network, IT, medical care, home appliances, etc. The rapid development of product technology level in supporting fields and the rapid growth of the market have strongly driven the development of connector technology. So far, electrical connectors have developed into serialized and specialized products with a complete range of products, rich varieties and specifications, diverse structural types, subdivision of professional directions, obvious industry characteristics, and standardized standard systems.

The electrical connectors in the prior art generally include: an insulating body, a terminal group arranged on the insulating body, an inner metal shell sleeved on the insulating body, and an outer metal shell fixedly covering the upper end and the outer side of the inner metal shell, There is a mating space formed between the inner metal shell and the insulating body, and the inner metal shell is not provided with grounding solder pins to achieve grounding connection with the PCB board, nor is it provided with other structures to achieve grounding connection with the PCB board, resulting in its own The shielding effect is not ideal enough to ensure that the electrical connector has a strong enough anti-interference performance, that is, the communication quality cannot be guaranteed.

In view of this, the inventor proposes the following technical solutions.

Utility model content:

The purpose of the utility model is to overcome the deficiencies of the prior art and provide an electrical connector.

In order to solve the above technical problems, the utility model adopts the following technical scheme: the electrical connector includes: an insulating body, a terminal group arranged on the insulating body, an inner metal shell sleeved on the insulating body and a fixed cover inside The upper end of the metal shell and the outer metal shell on the outer side, there is a plug-in space between the inner metal shell and the insulating body, the terminal group includes at least one ground terminal, the inner metal shell is formed with at least one elastic extension contact arm, the The elastic extension contact arm is pressure-conducted with the ground terminal.

Furthermore, in the above technical solution, the side of the grounding terminal is bent to form a conducting part, and the conducting part is fixed and exposed on the side of the insulating body, and the conducting part is pressed and electrically connected with the elastic extension contact arm. .

Furthermore, in the above technical solution, the terminal group includes a number of first terminals arranged in rows on the upper part of the insulating body and a number of second terminals arranged in rows on the lower part of the insulating body, wherein the The two first terminals on both sides of the upper part are the first and second grounding terminals as the grounding terminals; the two second terminals on both sides of the lower part of the insulating body are the third and fourth grounding terminals as the grounding terminals ; The inner metal shell has four elastic extension contact arms, which respectively press the first, second, third, and fourth ground terminals one by one.

Furthermore, in the above technical solution, a limiting piece is formed on the rear end of the inner metal shell, and a limiting groove corresponding to the limiting piece is formed on the insulating body, and the limiting piece is embedded in the limiting groove.

Furthermore, in the above technical solution, both sides of the rear end of the inner metal shell are formed with limiting gaps, and both sides of the rear end of the insulating body are formed with limiting protrusions, and the limiting protrusions are snapped and fastened to the limiting in the bit gap.

Furthermore, in the above technical solution, the lower end surface of the inner metal shell is punched and bent to form a plurality of positioning pieces for PCB board insertion and positioning.

Furthermore, in the above technical solution, the inner metal shell and the outer metal shell are fixed by spot welding, the inner metal shell is provided with a card slot, and the outer metal shell is formed with a card, and the card is fixed to the in the card slot.

Furthermore, in the above technical solution, several welding feet are formed downward on both sides of the outer metal shell; positioning pins are formed downward on the rear end of the outer metal shell.

Furthermore, in the above technical solution, the inner wall of the inner metal shell is formed with a protrusion that increases the insertion force, and the protrusion is exposed in the insertion space.

Further, in the above technical solution, the electrical connector is a USB Type-C connector.

After adopting the above-mentioned technical solution, the utility model has the following beneficial effects compared with the prior art: the inner metal shell in the utility model is formed with at least one elastic extension contact arm, and the elastic extension contact arm and the grounding terminal resist pressure and conduct, In this way, the shielding effect of the metal shell structure can be enhanced, the anti-interference ability of the utility model is stronger, the communication quality is better, and the market competitiveness is improved.

Description of drawings:

Fig. 1 is a perspective view of the utility model;

Fig. 2 is a perspective view of another viewing angle of the utility model;

Fig. 3 is the bottom view of the utility model;

Fig. 4 is a structural schematic diagram of the utility model after the outer metal shell is disassembled;

Fig. 5 is a three-dimensional exploded view of the utility model;

Fig. 6 is a perspective view of the terminal group in the utility model;

FIG. 7 is an exploded view of FIG. 6 .

Explanation of reference signs:

1 insulating body 11 limit groove 12 limit protruding strip

100 Ground terminal 101 Leading part 21 Inner metal shell

211 Limiting piece 212 Positioning piece 213 Limiting gap

214 card slot 215 convex hull 22 outer metal shell

221 Card 222 Soldering Pin 223 Positioning Pin

20 mating space 210 elastic extension contact arm 3 first terminal

4 second terminal

Detailed ways:

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

As shown in Figures 1 and 2, it is an electrical connector, which includes: an insulating body 1, a terminal group disposed on the insulating body 1, an inner metal shell 21 sleeved on the insulating body 1, and a fixing bag The outer metal shell 22 covers the upper end of the inner metal shell 21 and the outer metal shell 22 , and an insertion space 20 for external plugs is formed between the inner metal shell 21 and the insulating body 1 .

3 and 4, the terminal group includes at least one ground terminal 100, and the inner metal shell 21 is formed with at least one elastic extension contact arm 210, and the elastic extension contact arm 210 is in contact with the ground terminal 100 under pressure. , so that the shielding effect of the metal shell structure 2 can be enhanced, so that the anti-interference ability of the utility model is stronger, the communication quality is better, and it is beneficial to improve the market competitiveness.

Specifically, as shown in conjunction with 5-7, in this embodiment, the electrical connector of the present invention is a USB Type-C connector. The terminal group includes a number of first terminals 3 arranged in rows on the upper part of the insulating body 1 and a number of second terminals 4 arranged in rows on the lower part of the insulating body 1, wherein the terminals located on both sides of the upper part of the insulating body 1 The two first terminals 3 are the first and second ground terminals as the ground terminals 100, and the first and second ground terminals are symmetrically installed on both sides of the upper part of the insulating body 1; The second terminal 4 is the third and fourth ground terminals as the ground terminal 100. The third and fourth ground terminals are symmetrically installed on both sides of the lower part of the insulating body 1, and the third ground terminal is located beside the first ground terminal. ; The fourth ground terminal is located beside the second ground terminal. As shown in FIG. 5 , the inner metal shell 21 has four elastically extending contact arms 210, which respectively press the first, second, third, and fourth ground terminals one by one, and form a stable electrical conduction Pass.

As shown in FIG. 7 , the side of the grounding terminal 100 is bent and formed with a lead portion 101 , which is fixed and exposed on the side of the insulating body 1 , and the lead portion 101 abuts against the elastic extension contact arm 210 voltage conduction.

As shown in Figures 2 and 5, a limiting piece 211 is formed at the rear end of the inner metal shell 21; a limiting groove 11 corresponding to the limiting piece 211 is formed on the insulating body 1, and the limiting piece 211 is embedded in the In the limiting groove 11; both sides of the rear end of the inner metal shell 21 are formed with limiting gaps 213, and both sides of the rear end of the insulating body 1 are formed with limiting convex strips 12, and the limiting convex strips 12 are fastened to the The limiting notch 213 ensures that the inner metal shell 21 is stably socketed on the insulating body 1 .

The lower end surface of the inner metal shell 21 is punched and bent to form a plurality of positioning pieces 212 for PCB board insertion and positioning, so as to ensure that after the utility model is assembled with the PCB board, the inner metal shell 21 can be more stably connected with the PCB board. PCB board assembly.

As shown in FIG. 5, the inner metal shell 21 and the outer metal shell 22 are fixed by spot welding to ensure the stability of the assembly of the inner metal shell 21 and the outer metal shell 22. In addition, the inner metal shell 21 is provided outside There is a card slot 214 , and a card 221 is formed on the outer side of the outer metal shell 22 , and the card 221 is locked and fixed in the card slot 214 , so as to further improve the assembly stability of the inner metal shell 21 and the outer metal shell 22 .

As shown in FIG. 5 , a plurality of welding pins 222 are formed downward on both sides of the outer metal shell 22, and the welding pins 222 are used for welding and fixing the PCB board; the rear end of the outer metal shell 22 is downwardly formed with positioning pins 223, The positioning pin 223 is used for plugging and fixing the PCB board, so as to ensure that the utility model is stably installed on the PCB board.

As shown in FIG. 1 , a protrusion 215 is formed on the inner wall of the inner metal shell 21 to increase the insertion force, and the protrusion 215 is exposed in the mating space 20 .

To sum up, the inner metal shell 21 in the present invention is formed with at least one elastic extension contact arm 210, and the elastic extension contact arm 210 is pressed and conducted with the ground terminal 100, so as to enhance the shielding effect of the metal shell structure 2 , so that the anti-interference ability of the utility model is stronger, the communication quality is better, and it is beneficial to improve the market competitiveness.

Of course, the above descriptions are only specific embodiments of the utility model, and are not intended to limit the implementation scope of the utility model. Should be included in the utility model patent scope.

Claims (10)

1. An electrical connector, which includes: an insulating body, a terminal group arranged on the insulating body, an inner metal shell sleeved on the insulating body, and an outer metal shell fixedly covering the upper end and the outer side of the inner metal shell. A mating space is formed between the shell and the insulating body, and the terminal set includes at least one grounding terminal, It is characterized in that: the inner metal shell is formed with at least one elastic extension contact arm, and the elastic extension contact arm is pressed and conducted with the ground terminal. 2. The electrical connector according to claim 1, characterized in that: the side of the ground terminal is bent to form a conductive part, and the conductive part is fixed and exposed on the side of the insulating body, and the conductive part is connected to the The elastic extension contact arm resists the pressure and conducts. 3. The electrical connector according to claim 1, wherein the terminal group includes a plurality of first terminals arranged in rows on the upper part of the insulating body and a plurality of first terminals arranged in rows on the lower part of the insulating body Two terminals, wherein the two first terminals located on both sides of the upper part of the insulating body are the first and second grounding terminals used as the grounding terminals; the two second terminals located on both sides of the lower part of the insulating body are used as the grounding terminals The third and fourth ground terminals; the inner metal shell has four elastic extension contact arms, which respectively press the first, second, third and fourth ground terminals one by one. 4. The electrical connector according to any one of claims 1-3, wherein a limiting piece is formed in the middle of the inner metal shell, and a limiting groove corresponding to the limiting piece is formed in the middle of the insulating body , the limiting piece is embedded in the limiting groove. 5. The electrical connector according to claim 4, characterized in that: both sides of the rear end of the inner metal shell are formed with limiting gaps, and both sides of the rear end of the insulating body are formed with limiting protrusions, and the limiting protrusions The bar is snapped and fastened in the limiting notch. 6. The electrical connector according to claim 1, characterized in that: the lower end surface of the inner metal shell is punched and bent to form a plurality of positioning pieces for insertion and positioning of the PCB board. 7. The electrical connector according to claim 1, characterized in that: the inner metal shell and the outer metal shell are fixed by spot welding, the inner metal shell is provided with a card slot, and the outer metal shell is formed with a The card is engaged and fixed in the card slot. 8 . The electrical connector according to claim 1 , wherein: two sides of the outer metal shell are respectively downwardly formed with a plurality of welding feet; the rear end of the outer metal shell is downwardly formed with positioning pins. 9 . The electrical connector according to claim 1 , wherein a protrusion is formed on the inner wall of the inner metal shell to increase the insertion force, and the protrusion is exposed in the mating space. 10 . 10. The electrical connector according to claim 1, wherein the electrical connector is a USB Type-C connector.