CN102946019B - Shortened electric connector - Google Patents

Abstract

The invention discloses a shortened electric connector, which comprises: the insulator comprises a bearing seat and a tongue plate formed at the front end of the bearing seat, and the insulator is provided with a clamping cavity which is formed by the rear end surface of the bearing seat and extends into the tongue plate; an insulated backseat comprising: the bearing plate is embedded in the embedding cavity, and the fixing seat is formed at the tail end of the bearing plate; a terminal group, which comprises a plurality of first terminals and second terminals; the shell is coated on the periphery of the insulator, wherein the front end of the tongue plate protrudes out of a shell opening of the shell; an interference terminal and an elastic positioning piece are fixedly installed between the insulator and the insulating rear seat, and after the opposite end (plug) is inserted into the electric connector, the interference terminal and the elastic positioning piece form an expansion effect on the opposite end (plug) so as to improve the insertion and extraction force of the opposite end (plug). The invention has small volume, reduces the space required by assembly and can meet the requirement of miniaturization. In addition, the invention has excellent plugging and clamping effects.

Description

shortened electrical connector

Technical field:

The invention relates to the technical field of connector products, in particular to a shortened electrical connector. The electrical connector reduces the volume of the product by shortening the shell while maintaining excellent plugging and engaging effects.

Background technique:

USB is the abbreviation of Universal Serial BUS (Universal Serial Bus) in English, and its Chinese abbreviation is "Tongxian", which is an external bus standard used to standardize the connection and communication between computers and external devices. It is an interface used in the PC field. technology. Because the USB interface has the advantages of plug-and-play and hot-swappable support for devices, flexible connection, and independent power supply, it can be connected to a mouse, keyboard, printer, scanner, camera, flash drive, MP3 machine, mobile phone, digital camera, mobile phone, etc. Hard disks, external optical floppy drives, USB network cards, etc., almost all external devices are equipped with USB interfaces, which are widely used.

In order to obtain a higher transmission rate, the latest USB standard adopts USB 3.0. Of course, in order to be compatible with USB2.0, it has two sets of transmission terminals at the same time. Generally speaking, a conventional USB3.0 electrical connector includes: an insulator, which includes: a bearing seat and a tongue plate formed on the front end of the bearing seat; a terminal group, which includes a number of USB 3.0 terminals and USB 2.0 terminals, Both the USB 3.0 terminal and the USB 2.0 terminal include: a main body, a contact portion formed on the front end of the main body, a bending portion formed on the rear end of the main body, and a pin portion formed on the rear end of the bending portion; overlay the insulator.

The shell mouth of the shell of the existing USB electrical connector protrudes from the front end of the tongue plate, that is, the front end of the tongue plate is hidden in the shell, and the shell can not only protect its internal components, but also protect the plugged USB electrical connector. The mating end (plug) of the USB cable forms a clamp, that is, the mating end (plug) has sufficient plugging force when it is inserted or pulled out, so as to ensure that the USB plug will not fall off accidentally. It is based on the above reasons that the current technicians have never thought of improving the shell and shortening the length of the shell during the process of miniaturization and improvement of the USB electrical connector. Because the shortening of the shell will inevitably lead to insufficient insertion and extraction force provided by the electrical connector, when the mating end (plug) is inserted, it is easy to cause insufficient engagement force and lead to loosening.

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

Invention content:

The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a shortened electrical connector, which reduces the volume of the product by shortening the shell while maintaining excellent plug-in and snap-in effects .

In order to solve the above technical problems, the present invention adopts the following technical solutions: the shortened electrical connector includes: an insulator, which includes a bearing seat and a tongue plate formed on the front end of the bearing seat, the insulator forms a The rear end surface is opened and extended to the embedding cavity in the tongue plate; an insulating rear seat, which includes: a bearing plate embedded in the embedding cavity and a fixing seat formed at the end of the bearing plate; a terminal group, the The terminal group includes a number of first terminals and second terminals fixed on the carrier plate and exposed on the tongue plate; a shell, which covers the periphery of the insulator, wherein the front end of the tongue plate protrudes outside the shell opening of the shell An interference terminal and an elastic locator are fixedly installed between the insulator and the insulating back seat. When the mating end is inserted into the electrical connector, the interfering terminal and the elastic locating member will form a tightening effect on the mating end to improve the mating end. Insertion force.

Furthermore, in the above technical solution, the contact portion of the interference terminal is exposed at the bottom of the insulator, and the contact portion of the elastic positioning member is exposed at both sides of the insulator.

Further, in the above technical solution, the elastic positioning member includes: a body and elastic contact arms extending forward along both ends of the body, the body is provided with a positioning groove on the other side of the elastic contact arm, the The contact portion protruding outward is formed on the front end of the elastic contact arm.

Furthermore, in the above technical solution, first embedding holes for fitting the elastic contact arms of the elastic positioning member are respectively provided on both sides of the tongue plate, and the first embedding holes are connected with the embedding holes. cavities connected.

Furthermore, in the above technical solution, the insulating rear seat is provided with a limiting groove for the assembly of the elastic positioning member and a protrusion located in the limiting groove at the junction of the bearing plate and the fixing seat.

Furthermore, in the above technical solution, the interference terminal includes a main body and a contact portion formed on the front end of the main body, a barb is formed on the upper end of the main body, and a detent is provided on the bottom of the insulating rear seat to cooperate with the barb .

Furthermore, in the above technical solution, the end of the tongue plate is provided with a terminal groove for the assembly of the interference terminal, so that the interference terminal is inserted into the terminal groove and then interferes with the bearing plate and fixed.

Further, in the above technical solution, the tongue plate is provided with a first terminal hole penetrating through the embedding cavity and respectively exposing the contact portion of the first terminal and the contact portion of the second terminal. and the second terminal hole.

Further, in the above technical solution, the first terminal is a USB 2.0 terminal; the second terminal is a USB 3.0 terminal.

Furthermore, in the above technical solution, the upper end surface and the side surface of the bearing seat of the insulator are provided with a card slot, and a card matching the card slot is molded on the outer shell.

After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

1. The shell in the present invention is short, so that the front end of the tongue plate protrudes outside the shell mouth of the shell, which can effectively shorten the volume of the entire electrical connector, reduce the occupied space required for the assembly of the electrical connector, and meet the needs of modern miniature needs.

2. In the present invention, several interference terminals and an elastic positioning member are fixedly installed between the insulator and the insulating back seat, wherein the contact portion of the interference terminal is exposed on the bottom of the insulator, and the contact portion of the elastic positioning member is exposed on both sides of the insulator. Such a structure can effectively solve the problem of insufficient insertion and extraction force due to the short shell, which cannot engage with the mating end (plug), so that the present invention has excellent insertion, extraction and engagement effects.

Description of drawings:

Fig. 1 is a perspective view of the present invention;

Fig. 2 is the front view of the present invention;

Fig. 3 is a three-dimensional exploded view of the present invention;

Fig. 4 is a perspective view of an interference terminal in the present invention;

Fig. 5 is a schematic structural view of the present invention after the shell is removed;

Fig. 6 is a perspective view of an insulator in the present invention;

Fig. 7 is a schematic diagram of the assembly of the interference terminal, the insulator, the insulating back seat, the elastic positioning member and the terminal group in the present invention;

Fig. 8 is a perspective view of an insulating rear seat in the present invention;

Explanation of reference signs:

1 Insulator 10 Embedded cavity 11 Carrying seat 111 Card slot

12 Tongue plate 121 First embedding hole 122 Terminal groove 123 First terminal hole

124 Second terminal hole 2 Insulation rear seat 201 Limiting groove 202 Protruding post

203 Card position 21 Loading plate 22 Fixing seat 3 Terminal group

31 First terminal 311 Contact part 312 Pin part 32 Second terminal

321 Contact part 322 Pin part 4 Shell 40 Shell mouth

41 Card 42 Arm 43 Pin 5 Interference terminal

51 Main body 511 Barb 52 Contact part 6 Elastic locator

61 Body 611 Positioning groove 62 Elastic contact arm 621 Contact part

Detailed ways:

The present invention will be further described below in conjunction with specific embodiments and accompanying drawings.

As shown in Figures 1-3, it is a shortened electrical connector, which includes: an insulator 1, an insulating back seat 2 matched with the insulator 1, and a terminal group installed in the insulating back seat 2 and exposed on the insulator 1 3 and the shell 4 covering the periphery of the insulator 1 , wherein the insulator 1 and the shell 4 form a plug-in space, and the front end of the insulator 1 protrudes outside the shell 40 of the shell 4 .

A number of interference terminals 5 and an elastic positioning member 6 are fixedly installed between the insulator 1 and the insulating back seat 2, wherein the contact portion 52 of the interference terminal 5 is exposed at the bottom of the insulator 1, and the contact portion 621 of the elastic positioning member 6 Exposed on both sides of the insulator 1 , that is, the contact portion 52 of the interference terminal 5 and the contact portion 621 of the elastic positioning member 6 are both exposed in the plug-in space formed by the insulator 1 and the housing 4 .

The elastic positioning member 6 includes: a body 61 and an elastic contact arm 62 extending forward along both ends of the body 61. The other side of the body 61 relative to the elastic contact arm 62 is provided with a positioning groove 611. The elastic contact The contact portion 621 protruding outward is formed at the front end of the arm 62 .

As shown in FIG. 4, the interference terminal 5 includes a main body 51 and a contact portion 52 formed on the front end of the main body 51. A barb 511 is formed on the upper end of the main body 51. The bottom of the insulating rear seat 2 is provided with a barb 511. 511 matching card slot 203.

5-7, the insulator 1 includes: a bearing seat 11 and a tongue plate 12 formed on the front end of the bearing seat 11. The embedding cavity 10.

Both the upper end surface and the side surface of the bearing seat 11 of the insulator 1 are provided with locking grooves 111 . Both sides of the tongue plate 12 are respectively provided with a first embedding hole 121 for fitting the elastic contact arm 62 in the elastic positioning member 6, and the first embedding hole 121 communicates with the embedding cavity 10 . The end of the tongue plate 12 is provided with a terminal groove 122 for the assembly of the interference terminal 5 , so that the interference terminal 5 is inserted into the terminal groove 122 and then fixed against the bearing plate 21 .

The terminal group 3 includes a plurality of first terminals 31 and second terminals 32 fixed on the carrier board 21 and exposed on the tongue plate 12 .

The first terminal 31 is a USB2.0 terminal, which includes: a main body, a contact portion 311 formed at the front end of the main body, a bent portion formed at the rear end of the main body, and a pin portion formed at the rear end of the bent portion 312.

The second terminal 32 is a USB3.0 terminal, which includes: a main body, a contact portion 321 formed at the front end of the main body, a bent portion formed at the rear end of the main body, and a pin portion formed at the rear end of the bent portion 322.

The tongue plate 12 is provided with a first terminal hole 123 and a second terminal hole 123 passing through the embedded cavity 10 and respectively exposing the contact portion 311 of the first terminal 31 and the contact portion 321 of the second terminal 32 . Two terminal holes 124 , wherein the first terminal hole 123 is located at the front end of the tongue plate 12 , and the second terminal hole 124 is located at the middle of the tongue plate 12 . After the insulating back seat 2 is assembled with the insulator 1, the contact portion 311 of the first terminal 31 is exposed in the first terminal hole 123 on the tongue plate 12, and the contact portion 321 of the second terminal 32 passes through The second terminal hole 124 on the tongue plate 12 is exposed on the tongue plate 12 .

As shown in FIG. 8 , the insulating rear seat 2 includes: a bearing plate 21 embedded in the embedding cavity 10 and a fixing seat 22 formed at the end of the bearing plate 21 . The insulating rear seat 2 is provided with a limiting groove 201 for the assembly of the elastic positioning member 6 and a protruding post 202 located in the limiting groove 201 at the junction of the bearing plate 21 and the fixing seat 22 . When the elastic positioning member 6 is installed in the insulating rear seat 2, the body 61 of the elastic positioning member 6 falls into the limiting groove 201, wherein the positioning groove 611 on the body 61 and the protrusion in the limiting groove 201 The columns 202 are engaged with each other, and the elastic contact arms 62 formed on the body 61 are exposed on both sides of the bearing plate 21 .

The shell 4 is covered on the periphery of the insulator 1, wherein the front end of the tongue plate 12 protrudes outside the shell opening 40 of the shell 4; the shell 40 is shorter than the standard shell, and the purpose is to effectively integrate with the electronic device. Embedding in the shell achieves the development of light and thin electronic devices. A card 41 matching the card slot 111 on the insulator 1 is molded on the shell 4 . The outer surface of the casing 4 is provided with a plurality of force arms 42 , and the force-receiving parts of the force arms 42 are exposed in the casing 4 . The shell 4 is also formed with several pins 43 for assembly.

When the present invention is assembled, the first terminal 31 and the second terminal 32 in the terminal group 3 are integrally fixed on the insulating rear seat 2, wherein the contact portion 311 of the first terminal 31 and the second terminal 32 The contact parts 321 of the contacts are respectively exposed on the carrier plate 21 in the insulating back seat 2, and the pin parts 312 of the first terminal 31 and the pin parts 322 of the second terminal 32 are exposed on the fixing seat in the insulating back seat 2. 22 rear end. Wherein, the contact portion 311 of the first terminal 31 is closely attached to the front end of the carrier board 21 , and the contact portion 321 of the second terminal 32 is exposed in the middle of the carrier board 21 and protrudes upward.

The elastic positioning member 6 is installed in the insulating rear seat 2, wherein the body 61 of the elastic positioning member 6 falls into the limiting groove 201, wherein the positioning groove 611 on the body 61 is in the limiting groove 201 The protrusions 202 of the body 61 are engaged with each other, and the elastic contact arms 62 formed on the body 61 are exposed on both sides of the bearing plate 21 .

The interference terminal 5 is embedded in the terminal groove 122 at the end of the tongue plate 12 in the insulator 1, and then the insulating rear seat 2 with the terminal group 3 and the elastic positioning member 6 installed is inserted into the insulator 1. Specifically, the bearing plate 21 of the insulating back seat 2 is embedded in the embedding cavity 10 of the insulator 1, wherein the interference terminal 5 is in conflict with the bearing plate 21, and the barb 511 of the interference terminal 5 is embedded in the insulating back seat 2 In the locking position 203 at the bottom, the interference terminal 5 is fixedly installed between the insulator 1 and the insulating back seat 2 , and the contact portion 52 of the interference terminal 5 is exposed at the bottom of the insulator 1 . The elastic contact arm 62 of the elastic positioning member 6 is embedded in the first embedding hole 121 on both sides of the tongue plate 12 in the insulator 1 , and the contact portion 621 on the elastic contact arm 62 is exposed outside the two sides of the tongue plate 12 . The contact portion 311 of the first terminal 31 is exposed in the first terminal hole 123 on the tongue plate 12 , and the contact portion 321 of the second terminal 32 is exposed in the tongue through the second terminal hole 124 on the tongue plate 12 . plate 12.

Cover the shell 4 on the outside of the insulator 1, wherein the card 41 formed on the shell 4 is inserted into the slot 111 on the insulator 1, so that the shell 4 is fixed on the periphery of the insulator 1, and the insulator 1 The plugging space is formed with the shell 4 , and the front end of the insulator 1 protrudes out of the shell opening 40 of the shell 4 .

Of course, the above descriptions are only specific embodiments of the present invention, and are not intended to limit the implementation scope of the present invention. All equivalent changes or modifications made according to the structure, features and principles described in the scope of the patent application of the present invention should be included in the The present invention is within the patent scope.

Claims (8)

1. A shortened electrical connector, characterized in that it includes: An insulator, which includes a bearing seat and a tongue plate formed on the front end of the bearing seat, the insulator forms an embedding cavity opened from the rear end surface of the bearing seat and extending into the tongue plate; An insulating rear seat, which includes: a bearing plate embedded in the embedding cavity and a fixing seat formed at the end of the bearing plate; A terminal group, the terminal group includes a plurality of first terminals and second terminals fixed on the carrier plate and exposed on the tongue plate; A shell, the shell is wrapped around the periphery of the insulator, wherein the front end of the tongue protrudes outside the shell opening of the shell; An interference terminal and an elastic locator are fixedly installed between the insulator and the insulating back seat. When the paired end is inserted into the electrical connector, the interference terminal and the elastic locator will form a tightening effect on the mated end to improve the paired end. insertion force; The contact portion of the interference terminal is exposed on the bottom of the insulator, and the contact portion of the elastic positioning member is exposed on both sides of the insulator; The elastic positioning member includes: a body and elastic contact arms extending forward along both ends of the body. The body is provided with a positioning groove on the other side of the elastic contact arm. The front end of the elastic contact arm is formed with an outwardly protruding contact part. 2. The shortened electrical connector according to claim 1, characterized in that: first embedding holes for fitting the elastic contact arms of the elastic positioning member are respectively provided on both sides of the tongue plate, the first The embedding hole communicates with the embedding cavity. 3. The shortened electrical connector according to claim 1 or 2, characterized in that: the insulated rear seat is provided with a limit groove for the assembly of the elastic positioning member at the junction of the bearing plate and the fixed seat and is located at Boss in the limit slot. 4. The shortened electrical connector according to claim 1, wherein the interference terminal includes a main body and a contact portion formed on the front end of the main body, a barb is formed on the upper end of the main body, and the bottom of the insulating rear seat There is a card position matched with the barb. 5. The shortened electrical connector according to claim 1, characterized in that: the end of the tongue plate is provided with a terminal groove for the assembly of the interference terminal, so that the interference terminal is snapped into the terminal groove and connected with the said The bearing plate is fixed against interference. 6. The shortened electrical connector according to claim 1, characterized in that: the tongue plate is provided with a contact portion and a second contact portion passing through the embedding cavity and respectively exposing the first terminal. The first terminal hole and the second terminal hole of the contact portion of the two terminals. 7. The shortened electrical connector according to claim 1, wherein the first terminal is a USB 2.0 terminal; the second terminal is a USB 3.0 terminal. 8. The shortened electrical connector according to claim 1, characterized in that: the upper end surface and the side surface of the bearing seat of the insulator are provided with card slots, and a card matching the card slots is molded on the housing.