CN203135072U - Electric connector - Google Patents

Abstract

The utility model discloses an electric connector, this electric connector includes: insulating seat and install the terminal in insulating seat, this insulating seat includes: the bottom plate, the first side wall, the second side wall and the rear wall are arranged at the rear end of the bottom plate in a surrounding manner to form a guide groove for mutual insertion; the contact part of the terminal is exposed in the guide groove of the insulating seat, the front end of the insulating seat is provided with an installation position, a metal protective shell is fixed in the installation position, and the metal protective shell, the first side wall and the second side wall enclose a socket forming the guide groove. Because the metal protection shell is as the part of atress in the insulator seat most, even long-time the use, the metal protection shell also can not atress and appear damaging or cracked phenomenon, has improved greatly the utility model discloses a life. In addition, when assembling with the circuit board, the metal protection shell also simultaneously with circuit board welded fastening, the order the utility model discloses form stable assembly with the circuit board, and it is fixed not need plus fixing device.

Description

an electrical connector

Technical field:

The utility model relates to the field of connector products, in particular to an electrical connector with stable assembly, strong damage resistance and long service life. the

Background technique:

The electrical connector is a connecting bridge, which performs electrical connection and signal transmission between devices and devices, components and components, and system and system. It is a necessary basic component to form a complete system. the

The structure of the electrical connector currently on the market is shown in Figure 1. The electrical connector includes: an insulating seat 4 and a terminal 5 installed in the insulating seat 4. The guide groove 41 of the insulating base 4 forms a socket 411 on the front surface, and the contact portion 51 of the terminal 5 is exposed in the guide groove 41 of the insulating base 4 . the

During assembly, as shown in Figure 2, the electrical connector is mounted on a circuit board 6, the insulating seat 4 is covered on the circuit board 6, and an insertion space 40 is formed between the guide groove 41 and the circuit board, so that Mating with the mating end of the electrical connector. the

Since the insulating base 4 is integrally injection-molded with plastic, and the overall thickness of the electrical connector and the depth of the guide groove 41 must be considered, the thickness of the part between the bottom of the guide groove 41 and the bottom surface of the insulating base 4 is relatively thin. And in the process of mating, the bottom of the guide groove 41 is a stressed surface, that is, the part between the bottom of the guide groove 41 and the bottom surface of the insulating seat 4 is a stressed part. Therefore, after a long time of use, the bottom of the guide groove 41 and the insulating base The parts between the bottom surfaces of the seat 4 are easily damaged and easily broken, which seriously affects the service life of the entire electrical connector. In addition, when the electrical connector is assembled with the circuit board 6, it is only welded and fixed by the pin portion of the terminal and the circuit board 6, and an external fixing device is required to fix it during use, which is inconvenient for assembly and use. the

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

Utility model content:

The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art, and provide an electrical connector with stable assembly, strong damage resistance and long service life. the

In order to solve the above technical problems, the utility model adopts the following technical scheme: the electrical connector includes: an insulating seat and terminals installed in the insulating seat, the insulating seat includes: a base plate, first and second terminals located on both sides of the base plate The side wall and the rear wall located at the rear end of the bottom plate, the bottom plate, the first and second side walls and the rear wall are surrounded by guide grooves for mating insertion; the contact parts of the terminals are exposed in the guide grooves of the insulating seat, so The front end of the insulating seat is provided with a mounting position, and a metal protective shell is fixed in the mounting position, and the metal protective shell and the first and second side walls are surrounded by sockets forming the guide groove. the

Furthermore, in the above technical solution, the two ends of the metal protective shell are respectively inserted into and extended out of the first and second side walls of the insulating seat after being bent; flat. the

Further, in the above technical solution, the installation position includes: a vacant position located at the front end of the bottom plate of the insulating seat, and a first embedding hole and a second embedding hole respectively penetrating through the first and second side walls. the

Furthermore, in the above technical solution, both the first embedding hole and the second embedding hole are L-shaped. the

Further, in the above technical solution, the metal protective shell includes: a main body that is in contact with the bottom plate of the insulating seat, and a first welding leg and a second welding leg that are bent along both sides of the main body and then extended upward; the main body The shape corresponds to the shape of the vacancy at the front end of the bottom plate, and the first welding leg and the second welding leg respectively pass through the first embedding hole and the second embedding hole on the first and second side walls from bottom to top , and extended from the upper end faces of the first and second side walls, the first welding leg and the second welding leg respectively form a snap-fit fit with the first embedding hole and the second embedding hole, so that the metal protective shell is stably fixed on the The installation position of the insulating seat. the

Furthermore, in the above technical solution, the thickness of the main body of the metal protective case corresponds to the thickness of the bottom of the insulating seat, so that a smooth transition is formed at the joint between the metal protective case and the insulating seat. the

Further, in the above technical solution, the first welding leg and the second welding leg are both L-shaped, and the top ends of the first welding leg and the second welding leg are respectively formed with a first clamping position and a The third slot. the

Furthermore, in the above technical solution, the rear wall of the insulating seat is provided with a plurality of terminal holes passing through the guide groove forward, and a plurality of terminal grooves communicating with the terminal holes are formed at the rear end of the guide groove. the

Furthermore, in the above technical solution, the upper hole wall of the terminal hole in the insulating base is formed with a second clamping position, and the terminal is formed with a clamping protrusion matching the second clamping position, so that the terminal is firmly assembled on the Insulation seat. the

After adopting the above technical solution, the utility model has the following beneficial effects compared with the prior art: since the front end of the insulating seat is equipped with a metal protective shell and surrounds the periphery of the socket, the metal protective shell acts as the most stressed part of the insulating seat , even if it is used for a long time, the metal protective shell will not be damaged or broken due to force, which greatly improves the service life of the utility model. In addition, when assembling with the circuit board, the first welding leg and the second welding leg at both ends of the metal protective shell can be welded and fixed with the circuit board at the same time, so that the utility model can form a stable assembly with the circuit board without the need for external fixing devices. It is very convenient to install. the

Description of drawings:

Figure 1 is a perspective view of an existing electrical connector;

Figure 2 is a schematic diagram of the assembly of the existing electrical connector and circuit board;

Fig. 3 is a perspective view of the utility model;

Fig. 4 is the perspective view of another angle of view of the utility model;

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

Fig. 6 is the perspective view of insulating seat in the utility model;

Fig. 7 is the three-dimensional view of metal protection shell in the utility model;

Fig. 8 is a schematic diagram of the assembly of the utility model and the circuit board. the

Explanation of reference signs:

1 insulating seat 10 guide groove 100 socket 101 inserting space

11 Installation position 111 Vacant position 112 First embedding hole 113 Second embedding hole

12 First side wall 13 Second side wall 14 Terminal hole 15 Terminal groove

16 Bottom plate 17 Rear wall 2 Terminals 21 Main body

211 card convex 22 contact part 23 pin part 3 metal protective shell

31 Main body 32 The first welding foot 321 The first card position 331 The third card position

33 Second welding pin 4 Insulation seat 40 Inserting space 41 Guide groove

411 socket 5 terminals 51 contact part 6 circuit board

7 circuit board

Detailed ways:

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

As shown in Figures 3 and 4, an electrical connector includes: an insulating base 1 and a terminal 2 installed in the insulating base 1, and a guide groove 10 for mating is provided along the front end of the insulating base 1. A socket 100 is formed on the front end of the insulating base 1, and the contact portion 22 of the terminal 2 is exposed in the guide groove 10 of the insulating base 1. A metal protective shell 3 is fixedly installed on the front end of the insulating base 1, and the metal protective shell 3 is surrounded by The periphery of the socket 100 in the insulating base 1 . the

Specifically, the insulating base 1 includes: a base plate 16, the first and second side walls 12, 13 positioned on both sides of the base plate and the rear wall 17 at the rear end of the base plate 16, the base plate 16, the first and second side walls 12, 13 And the rear wall 17 surrounds and forms the guide groove 10 . the

The front end of the insulating base 1 is provided with a mounting position 11, which is used for fixedly installing the metal protection shell 3, wherein, the surface of the metal protection shell 3 abutting with the bottom of the guide groove 10 is equal to the bottom of the guide groove 10, And the socket 100 is surrounded by the first and second side walls 12 and 13 . the

As shown in FIG. 5 , the installation position 11 includes: a vacant position 111 located at the front end of the bottom plate 16 of the insulating base 1 and first embedding holes respectively penetrating through the first and second side walls 12 and 13 of the insulating base 1 112 and the second embedding hole 113, wherein the first embedding hole 112 and the second embedding hole 113 are L-shaped. the

As shown in FIG. 6 , the rear wall 17 of the insulating base 1 is opened forward with a plurality of terminal holes 14 passing through the guide groove 10 , and the rear end of the guide groove 10 is formed with a plurality of terminals communicating with the terminal holes 14 Slot 15. the

The terminal 2 includes: a main body 21 and a contact portion 22 and a pin portion 23 formed on the front and rear ends of the main body 21. The upper end of the main body 21 is formed with a protrusion 211, so that the terminal 2 is inserted along the terminal hole 14. Entering into the terminal groove 15, the protrusion 211 on the upper end of the main body 21 fits into the terminal hole 14, so that the terminal 2 is firmly assembled in the insulating seat 1 to prevent the terminal 2 from retreating. the

As shown in FIG. 7 , the metal protective case 3 includes: a main body 31 abutting against the bottom plate 16 of the insulating base 1 , and a first welding leg 32 and a second welding leg 33 that are bent along both sides of the main body 31 and then extended upward; Wherein, the first welding leg 32 and the second welding leg 33 are both L-shaped, and the top ends of the first welding leg 32 and the second welding leg 33 are respectively formed with a first locking position 321 and a third locking position 331 for positioning. . The shape of the main body 31 corresponds to the shape of the vacancy 111 at the front end of the bottom plate 16 , that is, the main body 31 forms a protruding portion 311 in the direction of the vacancy 111 to cooperate with it. The first welding leg 32 and the second welding leg 33 respectively pass through the first embedding hole 112 and the second embedding hole 113 on the first and second side walls 12, 13 from bottom to top, and the second 1. The upper end faces of the two side walls 12 and 13 are extended, and the first welding leg 32 and the second welding leg 33 respectively form a snap fit with the first embedding hole 112 and the second embedding hole 113, so that the metal protective shell 3. Stably fixed on the installation position 11 of the insulating seat. the

The thickness of the main body 31 of the metal protective shell 3 is equivalent to the thickness of the bottom plate 16 of the insulating base 1 , so that a smooth transition is formed between the metal protective shell 3 and the insulating base 1 without increasing the height of the electrical connector. the

When assembling, insert the terminal 2 along the terminal hole 14 in the insulating base 1 until the lower end of the contact portion 22 of the terminal 2 is embedded in the terminal groove 15, wherein the contact portion 22 of the terminal 2 is exposed in the insulating base 1 In the guide groove 10 , the protrusion 211 on the upper end of the main body 21 of the terminal 2 fits into the terminal hole 14 , so that the terminal 2 is firmly assembled in the insulating seat 1 to prevent the terminal 2 from retreating. the

The first and second welding feet 32 and 33 on both sides of the main body 31 in the metal protective case 3 pass through the first embedding hole 112 and the second side of the first side wall 12 of the insulating seat 1 from bottom to top, respectively. The second embedding hole 113 of the wall 13 protrudes out of the insulating base 1, wherein the protruding part 311 in the main body 31 of the metal protective shell 3 falls into the vacancy 111 of the insulating base 1, so that the metal protection After the shell 3 is assembled, it forms a stable assembly with the insulating base 1 . the

During use, the utility model is assembled with a circuit board 7, wherein, the pin portion 23 of the terminal 2 is welded and fixed with the circuit board 7, and the first and second welding pins 32, 33 of the metal protective shell 3 pass through the circuit board 7 respectively The pads are fixed by soldering so that the utility model is firmly installed on the circuit board 7, wherein an insertion space 101 is formed between the guide groove 10 of the insulating base 1 and the circuit board 7, so as to be compatible with the utility model New type mating end to plug. the

Because the metal protective shell 3 is installed on the front end of the insulating seat 1, and surrounds the periphery of the socket 100, the metal protective shell 3 is the most stressed part in the insulating seat 4, even if it is used for a long time, the metal protective shell 3 will not be damaged or damaged. Fracture greatly improves the service life of the utility model. In addition, when assembling with the circuit board 7, the metal protective shell is also welded and fixed with the circuit board 7 at the same time, so that the utility model and the circuit board 7 form a stable assembly without the need for external fixing devices to fix, and it is very convenient to use. the

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. the

Claims (9)

1. An electrical connector, comprising: an insulating seat and terminals installed in the insulating seat, the insulating seat comprising: a bottom plate, first and second side walls positioned at both sides of the bottom plate and a rear wall positioned at the rear end of the bottom plate, the The bottom plate, the first and second side walls and the rear wall are surrounded by a guide groove for mating; the contact part of the terminal is exposed in the guide groove of the insulating seat, and it is characterized in that: the front end of the insulating seat is provided with a mounting A metal protection shell is fixed in the installation position, and the metal protection shell and the first and second side walls surround the socket forming the guide groove. 2. An electrical connector according to claim 1, characterized in that: the two ends of the metal protective shell are respectively inserted into and extended out of the first and second side walls of the insulating seat after being bent; the metal protective shell The surface of the part of the shell that is abutted with the bottom plate is flush with the surface of the bottom plate. 3. An electrical connector according to claim 1, characterized in that: said installation position comprises: a vacant position located at the front end of the bottom plate in the insulating seat and first embedding holes respectively penetrating through the first and second side walls and the second embedding hole. 4 . The electrical connector according to claim 3 , wherein both the first embedding hole and the second embedding hole are L-shaped. 5. An electrical connector according to claim 3, characterized in that: the metal protective shell comprises: a main body that is docked with the bottom plate of the insulating seat, and a first welding leg that is bent along both sides of the main body and then extended upward. and the second welding foot; the shape of the main body corresponds to the shape of the vacancy at the front end of the bottom plate, and the first welding foot and the second welding foot pass through the first and second side walls respectively from bottom to top. An embedding hole and a second embedding hole are extended from the upper end surfaces of the first and second side walls, and the first welding foot and the second welding foot respectively form a clamping Fitting fit, the metal protective shell is stably fixed on the installation position of the insulating seat. 6 . The electrical connector according to claim 5 , wherein the thickness of the main body of the metal protective shell corresponds to the thickness of the bottom of the insulating seat, so that a smooth transition is formed at the joint between the metal protective shell and the insulating seat. 7. An electrical connector according to claim 5, characterized in that: the first welding leg and the second welding leg are both L-shaped, and the top ends of the first welding leg and the second welding leg are respectively A first card position and a third card position for positioning are formed. 8. An electrical connector according to claim 1, characterized in that: the rear wall of the insulating base is provided with a plurality of terminal holes passing through the guide groove forward, and the rear end of the guide groove is formed with multiple A terminal slot communicating with the terminal hole. 9. An electrical connector according to claim 8, characterized in that: the upper hole wall of the terminal hole in the insulating seat is formed with a second locking position, and the terminal is formed with a locking position corresponding to the second locking position. The matching protrusions make the terminal firmly assembled in the insulating seat.

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