CN201323303Y - Electric connector - Google Patents

Abstract

The utility model discloses an electric connector, which comprises an insulating body provided with a plurality of holding channels, terminals contained in the corresponding holding channels of the insulating body, a shielding shell connected with the insulating body in a group manner and an insulating back cover installed behind the insulating body. The shielding shell is provided with a frame-shaped basal part and a clamping piece which extends backwards from the upper side of the basal part. One side of the shielding shell corresponding to the clamping piece extends backwards from the lower side of the basal part to form a supporting part which extends backwards and supports the insulating body and the insulating back cover. The electric connector is provided with an improved shielding shell which can support the insulating body and the insulating back cover so as to enhance the structural strength.

Description

electrical connector

【Technical field】

The utility model relates to an electric connector, in particular to a miniature electric connector used for connecting a computer and an external electronic device.

【Background technique】

Universal Serial Bus (Universal Serial Bus, USB) interface, as a standard input/output interface, has been widely used in many electronic devices, which are usually used in notebook computers, personal digital assistants (Personal Digital Assistant, PDA) and handheld devices. A USB electrical connector on a portable device such as a game console is a MiniUSB electrical connector, and its size is smaller than a standard USB electrical connector, as shown in Chinese Patent Announcement No. CN2862389Y, which discloses a Mini USB Type electrical connector, the electrical connector includes an insulating body provided with a number of first storage channels, a terminal group accommodated in the corresponding first storage channel of the insulating body and a metal shielding shell located outside the insulating body, all terminals in the terminal group The tails of the connectors are electrically connected to the core wires of the cables, wherein the electrical connector also includes an insulating back cover assembled to the above-mentioned insulating body, so that the terminals can be stably held in the insulating body, and the metal shielding shell wraps the insulating body The tongue of the front end is wrapped to fix it, while the base of the rear end of the insulating body and the insulating back cover are exposed to the outside of the shielding shell and are prone to swing, which affects its structural strength; and at the same time, it is necessary to add a metal shell to shield the terminals and cables of the weld.

Therefore, it is indeed necessary to improve the electrical connector to solve the above-mentioned defects in the prior art.

【Content of utility model】

The main purpose of the utility model is to provide an electrical connector with an improved structure, which can effectively improve the structural strength of the electrical connector.

In order to achieve the above object, the utility model adopts the following technical solutions: an electrical connector, which includes an insulating body provided with several accommodation channels, terminals accommodated in the corresponding accommodation channels of the insulating body, and a shielding shell assembled with the insulating body body and an insulating back cover assembled behind the insulating body, the shielding shell is provided with a frame-shaped base and a holding piece extending backward from the upper side of the base, and the side of the shielding shell opposite to the holding piece is A supporting portion extends backwards from the lower side of the base, and the supporting portion extends backwards and supports the insulating body and the insulating rear cover.

Compared with the prior art, the utility model has the following beneficial effects: the electrical connector has an improved metal shielding shell, which can support the insulating body and the insulating back cover of the electrical connector to increase its structural strength.

【Description of drawings】

Fig. 1 is a three-dimensional assembly view of the electrical connector of the present invention.

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

FIG. 3 is an exploded perspective view of the electrical connector shown in FIG. 1 .

FIG. 4 is a view from another perspective of the electrical connector shown in FIG. 3 .

【Detailed ways】

Please refer to Figures 1 to 2, the electrical connector of the present invention includes an insulating body 10, a terminal group 20 accommodated in the insulating body 10, a shielding shell 30 assembled with the insulating body 10 and assembled to the insulating body 10. The insulating back cover 40 of. The electrical connector is provided with a cable (not shown) welded to the tail portion 22 of the terminal group 20 and a covering body (not shown) covering the above-mentioned components.

Referring to FIGS. 3 to 4 , the insulating body 10 of the electrical connector includes a main body 12 and a tongue 14 extending forward from the front and back of the main body 12 . The main body 12 of the insulating housing 10 includes an upper cover surface 122, a lower cover surface 123, a pair of opposite side surfaces 124 located on both sides and a terminal surface 125 located at the rear end. The first storage channel 121 set in the direction. The middle of the upper cover surface 122 protrudes upwards with a protrusion 1221 , the lower cover surface 123 protrudes downward beyond the bottom 140 of the tongue 14 , and both sides 124 of the main body 12 are provided with protruding portions 1241 extending outward. The protruding portion 1241 is connected to the front end of the main body portion 12 and adjacent to the tongue portion 14 .

The tongue portion 14 of the insulating body 10 includes a docking portion 143 and a fixing portion 142 extending upward from the docking portion 143 for a certain distance, and a terminal receiving groove 141 communicating with the first receiving channel 121 is provided on the tongue 14 .

3 to 4, the terminal group 20 includes eight terminals arranged in parallel, and each terminal includes a contact portion 21 for mating with a mating connector, and a holding portion extending backward from the contact portion 21. 23 and a flat tail portion 22 extending backward from the holding portion 23 and placed vertically. The contact portions 21 and holding portions 23 of the eight terminals are arranged on the same plane, and the structures of the contact portions 21 of the eight terminals are basically the same. Longer contact part 21; the structures of the holding parts 23 of the eight terminals are roughly the same, and the structures of the tails of the eight terminals are not the same. The tails of the power terminals on the side bend and extend a part backwards and upwards or downwards respectively relative to the tails of the power terminals on the right side, so that the tails 22 of the terminal group 20 are located at different levels, staggered from each other and arranged in a staggered manner.

The shielding case 30 is made of metal material and is provided with a frame-shaped base 31, the base 31 includes upper and lower walls 32, 33 and left and right walls 34, 35, and the shielding case 30 also includes an upper side and a The locking piece 37 extends backward and upward from the upper wall 32 of the base portion 31 , and a rectangular receiving hole 370 is defined in the center of the locking piece 37 . The lower wall 32 of the base 31 extends backward to form an inverted convex support portion 36, the two side walls 361 of the support portion 36 are respectively connected with the left and right walls 34, 35 of the base 31, and the two side walls 361 extend vertically upward respectively The buckle portion 38 is formed with a buckle hole 380 , and the bottom wall 360 of the support portion 36 is recessed downward and lower than the outer side of the lower wall 33 , so that the support portion 36 has a larger receiving space.

The insulating rear cover 40 has a base portion 41 and a receiving portion 43 extending backward from a rear surface 412 of the base portion 41 . The base part 41 is provided with a plurality of second receiving passages 413, the second receiving passages 413 include eight passages, which are respectively used to accommodate the corresponding terminal tails 22 of the terminal group 20, and these second receiving passages 413 respectively pass through and accommodate Section 43. The receiving part 43 includes a middle receiving block 431 and a first receiving block 432 located on both sides of the middle receiving block 431, wherein the upper surface and the lower surface of the receiving part 43 are respectively flush with the upper and lower surfaces of the base part 41 . Both sides of the base portion 41 of the insulating back cover 40 are respectively provided with locking blocks 45 , and the front ends of the locking blocks 45 are connected to the front end surface of the base portion 41 .

Please refer to FIGS. 1 to 3. During assembly, the terminal set 20 is inserted into the first receiving channel 121 of the insulating body 10 from the rear to the front, wherein the contact portion 21 of the terminal set 20 is accommodated in the tongue portion 14 of the insulating body 10. In the terminal receiving groove 141, the front part of the contact part 21 located at the mating part 143 is exposed on the tongue part 14, the second half of the contact part 21 is housed in the fixing part 142 of the insulating body 10, and the holding part 23 is housed in the main body part 12 The top end of the holding portion 23 abuts against the inner wall of the first receiving channel 121 , and the tail portion 22 of the terminal set 20 is exposed outside the end surface 125 of the insulating body 10 .

Then, put the insulating body 10 assembled with the terminal group 20 into the shielding case 30 from back to front, the front end of the main body 12 abuts against the rear end of the vertical portion 371 of the holding piece 37, and the insulating body 10 The bottom end of the protruding part 1241 is located on the side wall 361 of the shielding case 30, the clamping piece 37 of the shielding case 30 is located on the upper side of the insulating body 10, and the protrusion 1221 provided on the upper side is locked to the shielding case 30 in the receiving hole 370 , thereby preventing the insulating body 10 from moving backward relative to the shielding case 30 , so far the shielding case 30 is assembled outside the insulating body 10 .

The insulating back cover 40 is assembled on the rear end of the insulating body 10 from the back to the front. The insulating body 10 and the insulating back cover 40 are both located in the support portion 36 of the shielding case 30 to enhance the strength of the electrical connector. The buckle of the insulating back cover 40 The block 45 is fixed in the buckle hole 380 of the buckle part 38 of the shielding case 30 to prevent the rear insulation cover 40 from moving backward, and the tail part 22 of the terminal group 20 exposed to the rear end of the insulation body 10 is inserted into the second end of the insulation back cover 40 respectively. In the receiving channel 413 , the middle receiving block 431 and the first receiving block 432 insulate and isolate each terminal of the terminal set 20 from each other. Cables (not shown) can be selectively welded to the end of the tail portion 22 of the corresponding terminal group 20 according to the needs of the application environment.

After the above assembly is completed, a cladding body (not shown) is overmolded thereon.

Claims (10)

1. An electrical connector, comprising an insulating body provided with several accommodation channels, terminals accommodated in the corresponding accommodation channels of the insulating body, a shielding shell assembled with the insulating body, and an insulating back cover assembled behind the insulating body , the shielding shell is provided with a frame-shaped base and a holding piece extending backward from the upper side of the base, and it is characterized in that: the side of the shielding shell opposite to the holding piece extends backward from the lower side of the base. There is a supporting part, which extends backward and supports the insulating body and the insulating back cover. 2. The electrical connector according to claim 1, wherein the supporting portion of the shielding housing has a bottom wall and side walls on both sides, the bottom wall and the side walls are connected to the base, and support The bottom wall of the part is recessed downwards. 3 . The electrical connector according to claim 2 , wherein the sidewalls of the supporting portion respectively extend vertically upward to form a buckling portion having a buckling hole. 4 . 4. The electrical connector according to claim 3, wherein the insulating back cover has a base portion and a receiving portion extending backward from the rear surface of the base portion, the receiving portion includes a middle receiving block and a The first containment block on both sides of the middle containment block. 5 . The electrical connector as claimed in claim 4 , wherein at least one locking block is provided on both sides of the base portion, and the locking block is accommodated in a locking hole of the shielding case. 5 . 6. The electrical connector according to claim 1, wherein the supporting portion of the shielding housing is in an inverted convex shape. 7. The electrical connector according to claim 6, wherein the base has a lower wall, the supporting portion has a bottom wall connected to the lower wall, the bottom wall is downwardly recessed and lower than the lower wall of the base . 8. The electrical connector according to claim 2 or 6, wherein the holding piece defines a receiving hole and has a vertical portion bent upward. 9. The electrical connector according to claim 8, wherein the insulating body includes a main body and a tongue extending forward from the main body, and the upper side of the main body is provided with a retaining piece. Protrusions in the receiving hole. 10. The electrical connector according to claim 9, wherein the front end of the main body abuts against the rear end of the vertical portion of the locking piece.

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