CN202076578U - Electric connector - Google Patents

Abstract

An electrical connector, comprising a shielding shell, an insulating body installed in the shielding shell, a terminal fixed on the insulating body, and a protective sleeve covering the shielding shell and the insulating body; the shielding shell forms There is an accommodating cavity for plugging in the docking connector, and an insertion port is provided at the front opening of the shielding case; the protective cover includes a main body covering the outer periphery of the shielding case and the insulating body, and a seal at the front end of the main body for sealing The sealing ring shielding the insertion port on the casing and the sealing plate extending from the main body to a direction parallel to the butted circuit board. The sealing plate is sealed and connected to the docking circuit board, so that the protective cover isolates the electrical connector from the circuit board where the protective cover is located, and prevents the liquid splashed into the receiving cavity from flowing into other circuit modules and causing a short circuit.

Description

electrical connector

【Technical field】

The utility model discloses an electrical connector, in particular to an electrical connector for signal transmission between mobile communication equipment and the outside.

【Background technique】

As a standard input/output interface, the Universal Serial Bus (USB) interface has been widely used in the design of many electronic devices. In the field of electronic products such as personal computers, mobile phones, digital cameras, and music players. Due to limitations in product shape or cost, most mobile devices use a micro-USB structure. China Taiwan Utility Model Patent No. M383228 discloses such an electrical connector, including a metal shell, an insulating body and a number of terminals housed and fixed in the insulating body, the metal shell covers the insulating body and terminals, and forms a butt joint connection The receiving cavity for plugging in the device. The metal shell includes a metal inner shell and a metal outer shell. The metal inner shell is provided with at least one clamping hole at a position corresponding to the receiving cavity, and the metal shell covers at least the surface of the metal inner shell provided with the clamping hole and is in contact with the metal inner shell. The clamping hole on the substrate is covered by the metal shell to prevent water from flowing into the docking circuit board of the electrical connector from the clamping hole.

However, as an input/output interface, the USB is usually disposed on the periphery of the electronic device and exposed to the outside. Since the holding hole is provided on the metal shell, the liquid will flow into the inside of the docking circuit board through the holding hole to cause a short circuit, thereby damaging and affecting other components.

In order to achieve a waterproof effect, the electrical connector in the prior art is covered with a metal shell on the periphery of the metal inner shell to prevent water from flowing into the docking circuit board of the electrical connector from the holding hole, but the metal shell is not covered. Covering the insulating body, and the metal shell is not sealed with the docking circuit board, the liquid may flow into the internal circuit board along the joint of the metal shell and the metal inner shell or the joint of the insulating body and the metal inner shell. In order to achieve a good waterproof effect, it is necessary to improve the tightness of the butt joint between the metal shell, the metal inner shell and the insulating body, which increases the manufacturing precision requirements.

In view of the above problems, it is necessary to provide an improved electrical connector with waterproof effect.

【Content of utility model】

The purpose of the utility model is to provide a simple structure and waterproof electrical connector.

In order to solve the above technical problems, the utility model adopts the following technical solutions: an electrical connector, including a shielding shell, an insulating body installed in the shielding shell, a terminal fixed on the insulating body and a shielding shell and a protective cover outside the insulating body; the shielding shell is formed with a receiving cavity for plugging the butt connector, and the front opening of the shielding shell is provided with an insertion port; the insulating body is provided with a base and extends forward from the base The tongue plate that enters the receiving cavity; the protective sleeve includes a main body that covers the outer periphery of the shielding shell and the insulating body, a sealing ring located at the front end of the main body for sealing the periphery of the insertion port, and a direction parallel to the docking circuit board from the main body. A sealing plate extending in a direction, the sealing plate is sealingly connected with a corresponding circuit board.

Compared with the prior art, the electrical connector of the utility model has at least the following advantages: a protective cover is provided on the shielding shell and the insulating body of the electrical connector, and the protective cover connects the electric circuit board through the sealing connection of the protective cover. The connector is completely isolated from the circuit board except where the protective cover is located. Therefore, it can effectively prevent short circuit caused by liquid flowing into the internal circuit during use, has the function of waterproof, and has a simple structure and convenient manufacturing process.

【Description of drawings】

Fig. 1 is a perspective view of the electrical connector of the present invention.

FIG. 2 is a perspective view of the electrical connector shown in FIG. 1 viewed from another angle.

FIG. 3 is a partially exploded view of the electrical connector shown in FIG. 1 .

Fig. 4 is an exploded view of the electrical connector of the present invention.

FIG. 5 is an exploded view of the electrical connector shown in FIG. 4 viewed from another angle.

【Detailed ways】

The specific implementation manner of the electrical connector 100 of the present invention will be described in detail below with reference to the accompanying drawings.

Please refer to Figures 1 to 4, the utility model electrical connector 100 includes a shielding shell 1, an insulating body 2 installed in the shielding shell 1, a terminal 3 fixed on the insulating body 2 and coated on The shielding shell 1 and the protective cover 4 outside the insulating body 2 .

Please refer to FIG. 3 and FIG. 4 , the shielding housing 1 includes an upper wall 11 , two side walls 12 bent downward from both sides of the upper wall 11 and two side walls 12 connected to the upper wall 11 and parallel to the upper wall 11 . The bottom wall 13 is provided. The shielding housing 1 is defined by the connection of the upper wall 11 , the two side walls 12 and the bottom wall 13 to form a receiving chamber for plugging in a docking connector. The opening at the front end of the shielding housing 1 is an insertion port (not shown) for a mating connector. The upper wall 11 is provided with a buckle hole 110, and the buckle hole 110 is used for buckle-fitting with a corresponding structure of the docking connector. Notches 111 are defined at the ends of the upper wall 11 adjacent to the side walls 12 , and a blocking wall 112 is bent and extended vertically downward along the upper wall 11 between the two notches 111 . At the end where the notch 111 is located, baffles 121 are bent and extended vertically along the side wall 12 respectively. The two baffles 121 are located on the left and right sides of the baffle 112 respectively. It is used to stably hold the insulating body 2 on the shielding case 1 . The bottom wall 13 of the shielding shell 1 is adjacent to the side wall 12 and has a plurality of welding parts 131 stamped and extended respectively. The welding parts 131 are respectively extended to both sides along the bottom wall 13 for connecting the butt circuit board.

Referring to FIGS. 3 and 4 , the insulative housing 2 includes an elongated base 21 and a tongue 22 disposed on the front wall of the base 21 and extending into the receiving cavity toward the opening of the electrical connector 100 . The upper end of the base 21 is protruded with a boss 211 that cooperates with the notch 111 on the corresponding shielding shell 1, so that after the insulating body 2 is installed in the shielding shell 1, the shielding shell 1 can hold it stably and reliably. . A lower surface of the front end of the tongue plate 22 is provided with a plurality of terminal grooves 222 for accommodating the terminals 3 .

Please refer to Fig. 3, the terminal 3 is provided with a welding pin 31 welded to the circuit board, a contact pin 32 that is in contact with the butt connector and a connecting portion 33 connecting the soldering pin 31 and the contact pin 32, wherein the contact pin 32 The end portion is provided with an obliquely upwardly tilted protrusion 321 , and the protrusion 321 is held in the insulating body 2 by insert molding to prevent the contact pin 32 from detaching from the bottom of the terminal groove 222 due to external force.

Please refer to Fig. 1 and Fig. 2, the protective cover 4 is roughly arranged in the shape of a hollow cuboid, and is designed by waterproof material, including the main body part 41 covering the outer periphery of the shielding shell 1 and the insulating body 2, located on the main body The sealing ring 42 at the front end of the portion 41 is used to seal the periphery of the insertion port on the shielding housing 1 and the sealing plate 43 extends from the main body portion 41 parallel to the direction of the mating circuit board. The main body 41 includes a top plate 411 , two side plates 412 vertically extending downward from two sides of the top plate 411 , and a back plate 413 vertically extending downward from one end of the top plate 411 . The sealing ring 42 is formed extending along the front end of the main body 41 , and the sealing ring 42 is correspondingly wrapped around the periphery of the insertion port of the shielding housing 1 for sealing and waterproofing at the interface of the electrical connector 100 installed on the electronic device. The sealing plate 43 is formed by extending along the side plate 412 of the main body 41 and the lower end of the back plate 413 parallel to the direction of the butted circuit board, so that the protective cover 4 completely isolates the electrical connector 100 from the circuit board where the protective cover 4 is located. open. If the protective cover 4 is made of a material with a light-guiding effect, the light-guiding effect can also be increased.

During assembly, the terminal 3 is fixed in the insulating body 2 by insert molding. The insulating body 2 is inserted into the shielding housing 1 from the rear of the electrical connector 100, the boss 211 and the notch 111 are matched and abutted against each other, the retaining wall 112 and the baffle 121 are coated on the end surface of the insulating body 2 by riveting, and Contradicting and pressing against the insulating body 2 is used to stably hold the insulating body 2 on the shielding case 1 . Finally, the protective cover 4 is sleeved on the shielding shell 1, the sealing ring 42 on the protective cover 4 is correspondingly covered on the periphery of the insertion port on the shielding shell 1, and the sealing plate 43 on the protective cover 4 is sealed and connected with the circuit board. The protective cover 4 completely isolates the electrical connector 100 from the circuit board outside the position of the protective cover 4 . Such a design can effectively prevent short circuit caused by liquid flowing into the interior of the electronic device during use, has a waterproof function, and has a simple structure and convenient manufacturing process.

The above is only one embodiment of the utility model, not all or the only implementation. Any equivalent change to the technical solution of the utility model adopted by those of ordinary skill in the art by reading the specification of the utility model shall be considered as the present invention. covered by the claims of the utility model.

Claims (10)

1. an electric connector comprises shielding casing, is installed in the interior insulating body of shielding casing, is fixedly arranged on the terminal on the insulating body and is coated on shielding casing and insulating body protective sleeve outward; Described shielding casing is formed with the host cavity in order to the grafting butt connector, and the front opening place of shielding casing is provided with and inserts mouth; Described insulating body is provided with base portion and extends forwardly to the hyoplastron of host cavity from base portion; It is characterized in that: described protective sleeve comprises that the main part that is coated on shielding casing and insulating body periphery, be used to the seal sealing ring and the autonomous body that insert the mouth periphery that is positioned at the main part front end dock the sealing plate that the circuit board direction is extended to being parallel to, and described sealing plate is tightly connected with the corresponding circuits plate.

2. electric connector as claimed in claim 1; it is characterized in that: the main part of described protective sleeve comprises that top board, the side plate that is extended to form by the top board both sides reach the backboard that is extended to form by top board one end downwards downwards, and described main part is coated on shielding casing and insulating body periphery.

3. electric connector as claimed in claim 2 is characterized in that: described sealing plate extends to form to being parallel to butt joint circuit board direction along the side plate and the backboard lower end of main part, and sealing plate is tightly connected with the corresponding circuits plate.

4. electric connector as claimed in claim 3 is characterized in that: described main part front end along protective sleeve has extended to form sealing ring, and the sealing ring correspondence is coated on the insertion mouth periphery on the shielding casing.

5. electric connector as claimed in claim 1, it is characterized in that: described shielding casing comprises upper wall, the sidewall that is bent to form respectively from the upper wall both sides and the diapire that connects the two side and be arranged in parallel with upper wall downwards, and described upper wall is provided with the block button hole that corresponding button with butt connector is held.

6. electric connector as claimed in claim 1 is characterized in that: convex with boss on the base portion of described insulating body, corresponding shielding casing is provided with the breach that cooperates butt with boss.

7. electric connector as claimed in claim 6 is characterized in that: upper wall one end of described shielding casing bends vertically downward and has extended to form retaining wall, and the retaining wall correspondence presses on and is used for fixing insulating body on the insulating body.

8. electric connector as claimed in claim 7 is characterized in that: the breach on the described shielding casing is arranged at the both sides of retaining wall respectively.

9. as claim 6 or 7 or 8 described electric connectors, it is characterized in that: on the described shielding casing breach place end along sidewall respectively vertically bending be extended with baffle plate, two baffle plates lay respectively at the left and right sides of retaining wall, and described baffle plate correspondence presses on and is used for fixing insulating body on the insulating body.

10. electric connector as claimed in claim 1, it is characterized in that: described terminal is provided with the contact feet with the butt connector contact matching, described contact feet end is provided with the projection that tilts to be upturned, and projection is retained on and is used in the insulating body prevent that contact feet breaks away from because of the external force effect.

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