Electric connector

Abstract

The utility model discloses an electric connector, which comprises an insulating shell provided with a plurality of stop blocks and a plurality of fixing grooves, the plurality of fixing grooves are arranged among the plurality of stop blocks, each stop block is provided with two connecting surfaces, two inclined surfaces and a plane, the connecting surfaces are communicated with the fixing grooves, and the two inclined surfaces are connected with the plane; the insulating body is fixedly arranged in the insulating shell; the terminal group is arranged in the insulating body, the terminal group is provided with a plurality of terminals and an insulator, the plurality of terminals are fixedly arranged in the insulator, each terminal is arranged between the two baffle blocks, each terminal is provided with a fixing part and an extending part, the extending part is guided into the fixing groove through the inclined plane, and the terminal group is provided with a plurality of terminals and an insulator. And the extension part is clamped between the two connecting surfaces. Therefore, the electric connector provided by the utility model has the advantages that the terminal size is stable, the insulating shell is easy to mold and has no burrs, and the assembly precision of the welding part of the terminal is high.

Description

Technical Field

[0001] The utility model relates to an electric connector, in particular to an electric connector with stable terminal size, easy full-molding of insulating shell without burrs, and high assembly precision of terminal welding part. Background Art

[0002] Among the types of electrical connectors commonly used in various electronic products, the connectors with Universal Serial Bus (USB) specifications are the most widely used. With the advancement of technology, there are more and more types of USB, such as USB 2.0, USB 3.0, Micro USB, Mini USB or USB TYPE-C. Among them, USB TYPE-C connectors have been widely used in various electronic products.

[0003] Chinese Patent Announcement No. 201789097 discloses "an electrical connector", including an insulating body and a plurality of conductive terminals. The insulating body has a base and a docking portion protruding from the top surface of the base, and a plurality of terminal slots extending through the bottom surface of the base are provided in the docking portion. Each conductive terminal has a fixed portion fixed in the terminal slot, the top of the fixed portion extends upward to form a contact portion, the bottom of the fixed portion is bent and extended downward to form a connecting portion, and the end of the connecting portion is bent and extended to form a welding portion. Among them, a receiving cavity is formed at the bottom of the base, and a stopper protrudes from the side wall of the receiving cavity, and a plurality of fixing grooves are provided on the stopper that penetrate the upper and lower end surfaces of the stopper and correspond to the terminal slots, and the connecting portion of the conductive terminal is clamped in the fixing groove.

[0004] However, the welding part of the above-mentioned electrical connector is suspended on the insulating body, which may easily cause the terminal to deform and affect the terminal size during the manufacturing process of the electrical connector. The tip shape of the guiding slope of the stopper may easily produce burrs during the injection molding process, and the tip shape design of the guiding slope of the stopper may easily cause the insulating body to have problems such as under-molding.

[0005] Therefore, it is necessary to provide an electrical connector with stable terminal dimensions, easy full-molding of the insulating shell without burrs, and high assembly accuracy of the terminal welding part. Summary of the invention

[0006] The purpose of the utility model is to provide an electrical connector to address the defects and shortcomings of the prior art.

[0007] To achieve the above-mentioned purpose, the utility model discloses an electrical connector, comprising: an insulating shell, provided with a plurality of blocks and a plurality of fixing grooves, the plurality of fixing grooves are arranged between the plurality of the block blocks, each of the block blocks is provided with two connecting surfaces, two inclined surfaces, and a plane, one end of the lower surface of the insulating shell extends backward to form the plurality of connecting surfaces, the connecting surface is communicated with the fixing groove, one end of the connecting surface extends backward and extends obliquely to form the inclined surface, and the two inclined surfaces are connected to the plane; an insulating body, fixedly arranged in the insulating shell; an upper terminal group, arranged in the insulating body, the upper terminal group is provided with a plurality of upper terminals and an upper insulator, the plurality of upper terminals are fixedly arranged in the upper insulator, each of the upper terminals is provided with an upper fixing portion, the rear end of the upper fixing portion is bent downward to form an upper bending portion, the lower end of the upper bending portion is extended downward to form an upper extension portion, the lower end of the upper extension portion is bent backward and extended to form an upper welding portion, the The rear end of the upper insulator extends downward to form a covering portion, the upper extension portion is fixed in the covering portion and covered by the covering portion, the upper and lower ends of the covering portion are provided with a plurality of protrusions, and the plurality of protrusions respectively cover the outer surfaces of the upper extension portion and the upper welding portion; and a lower terminal group is arranged in the insulating body, the lower terminal group is provided with a plurality of lower terminals and a lower insulator, the plurality of lower terminals are fixed in the lower insulator, each of the lower terminals is arranged between the two stoppers, each of the terminals is provided with a lower fixing portion, the rear end of the lower fixing portion is bent downward to form a lower bending portion, the lower end of the lower bending portion extends downward to form a lower extension portion, the lower end of the lower extension portion is bent forward to form a reverse bending portion, the front end of the reverse bending portion extends forward to form a lower welding portion, the reverse bending portion is guided to the fixing groove through the inclined surface, the reverse bending portion is engaged between the two connecting surfaces, and the lower welding portion is arranged on the lower surface of the insulating shell.

[0008] As a further improvement, the included angle of the lower bending portion is 87 to 88.5 degrees.

[0009] As a further improvement, the connection between the rear end of the upper insulator and the top end of the covering portion is recessed downward to form a groove, and the upper bending portion exposes the upper insulator through the groove.

[0010] As a further improvement, the lower extending portion corresponds to the upper extending portion, and the lower welding portion and the upper welding portion extend in opposite directions.

[0011] As a further improvement, an electrical connector is provided, comprising: an insulating body; and a terminal group, which is arranged in the insulating body, the terminal group is provided with a plurality of terminals and an insulator, the plurality of terminals are fixedly arranged in the insulator, each of the terminals is provided with a fixing portion, the rear end of the fixing portion is bent downward to form a bending portion, the lower end of the bending portion is extended downward to form an extension portion, the rear end of the extension portion is extended backward to form a welding portion, the insulator is provided with a main body portion, the main body portion is extended downward to form a covering portion, the extension portion is fixed in the covering portion and covered by the covering portion, the welding portion extends out of the bottom of the covering portion, the connection between the rear end of the main body portion and the top end of the covering portion is recessed downward to form a groove, and the bending portion exposes the insulator through the groove.

[0012] As a further improvement, a plurality of protrusions are provided at the upper and lower ends of the covering portion, and the plurality of protrusions respectively cover a portion of the extending portion and the welding portion.

[0013] As described above, the utility model electric connector adopts an innovative structural design, and the upper bending part exposes the upper insulator through the groove, so as to avoid deformation of the upper terminal during the high-speed injection molding process. Several protrusions respectively cover the outer surface of the upper extension part and the upper welding part to ensure the dimensional stability and assembly accuracy of the upper terminal. One end of the connecting surface extends backward and obliquely to form the inclined surface, and the two inclined surfaces are connected to the plane. The plane makes it easy to form the block and avoid burrs, and can also avoid the insulation shell from being not fully molded. The angle α of the lower bending part is 87~88.5 degrees, so that several lower extension parts and the lower welding part are tilted forward, and a pre-pressure is provided through the lower terminal, which makes it easier for the folded part to enter the fixed groove of the insulation shell during assembly to improve the assembly accuracy. Therefore, the utility model electric connector has the advantages of stable terminal size, easy full mold, avoidance of burrs, and high assembly accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the electrical connector of the utility model.

[0015] Figure 2 This is a three-dimensional view of the electrical connector of the present invention from another angle.

[0016] Figure 3 It is a partial exploded view of the electrical connector of the present invention.

[0017] Figure 4 It is a partial exploded view of the electrical connector of the present invention.

[0018] Figure 5 It is a three-dimensional diagram of the upper terminal group of the electrical connector of the utility model.

[0019] Figure 6 This is an exploded view of the upper terminal set of the electrical connector of the present invention.

[0020] Figure 7 It is an exploded view of the lower terminal set of the electrical connector of the present invention.

[0021] Figure 8 It is a three-dimensional diagram of the insulating housing of the electrical connector of the utility model.

[0022] Fig. 9 The utility model electric connector is along Figure 8 A partial enlarged view of the X1.

[0023] Fig.10 The utility model relates to an electric connector for connecting Figure 2 A partial enlarged view of the X2.

[0024] The descriptions of the reference numerals in the figures are as follows.

[0025] Electrical connector 100 Insulation body 1

[0026] Terminal group 2 Upper terminal group 21

[0027] Upper terminal 211 Upper insulator 212

[0028] Upper body portion 2121 Upper connection portion 2122

[0029] Upper tongue 2123 Covering part 2124

[0030] Groove 2125 Protrusion 2126

[0031] Upper fixing portion 213 Upper contact portion 214

[0032] Upper bending portion 215 Upper extending portion 216

[0033] Upper welding portion 217 Lower terminal group 22

[0034] Lower terminal 221 Lower insulator 222

[0035] Lower body part 2221 Lower connection part 2222

[0036] Lower tongue portion 2223 Lower fixing portion 223

[0037] Lower contact portion 224 Lower extension portion 225

[0038] Lower welding portion 226 Lower bending portion 227

[0039] Reflection 228 Center piece 3

[0040] Masking sheet 4 Colloid 5

[0041] Insulation housing 6 Stopper 61

[0042] Connecting surface 610 Inclined surface 611

[0043] Plane 612 Chamfer 613

[0044] Fixing groove 62 Metal housing assembly 7. Implementation

[0045] In order to explain the technical content, structural features, purpose and effect of the electrical connector 100 of the present invention in detail, the following examples are given and detailed descriptions are provided with reference to the drawings. In this embodiment, the electrical connector 100 of the present invention is a TYPE-C connector. In specific implementation, the electrical connector 100 of the present invention can also be other types of multi-terminal and small pitch connectors.

[0046] See also Figures 1 to 4 The utility model electric connector 100 includes an insulating body 1, a terminal group 2, a center piece 3, several shielding pieces 4, a colloid 5, an insulating shell 6 and a metal shell group 7. The insulating body 1 covers the center piece 3 and the terminal group 2, and the terminal group 2 is fixed in the insulating body 1. The center piece 3 is arranged in the middle of the terminal group 2 and is fixed in the insulating body 1. Several shielding pieces 4 are arranged on the upper and lower sides of the insulating body 1. The colloid 5 covers the rear end of the insulating body 1 and is arranged at the rear end of the insulating shell 6. The colloid 5 is used to fill the gap between the insulating shell 6 and the insulating body 1 to prevent water from flowing into the rear end of the utility model electric connector 100 and causing damage to the utility model electric connector 100. The insulating body 1 is fixed in the insulating shell 6. The metal shell group 7 is fixed on the upper and lower sides of the insulating shell 6, and the metal shell group 7 is used for shielding interference and grounding.

[0047] See also Figures 5 to 7 The terminal group 2 is disposed in the insulating body 1. The terminal group 2 includes an upper terminal group 21 and a lower terminal group 22, and the center piece 3 is disposed between the upper terminal group 21 and the lower terminal group 22. The upper terminal group 21 is provided with a plurality of upper terminals 211 and an upper insulator 212, and the plurality of upper terminals 211 are fixedly disposed in the upper insulator 212.

[0048] Each of the upper terminals 211 is provided with an upper fixing portion 213, an upper contact portion 214, an upper bending portion 215, an upper extension portion 216 and an upper welding portion 217. The front end of the upper fixing portion 213 extends forward to form the upper contact portion 214, and the rear end of the upper fixing portion 213 is bent downward to form the upper bending portion 215. The lower end of the upper bending portion 215 extends downward to form the upper extension portion 216. The lower end of the upper extension portion 216 is bent backward and extends to form the upper welding portion 217.

[0049] The upper insulator 212 is provided with an upper body portion 2121, an upper connecting portion 2122, an upper tongue portion 2123, a covering portion 2124 and a groove 2125. The front end of the upper body portion 2121 extends forward to form the upper connecting portion 2122, and the front end of the upper connecting portion 2122 extends forward to form the upper tongue portion 2123. The upper fixing portion 213 is fixed in the upper body portion 2121 and the upper connecting portion 2122 of the upper insulator 212 and covered by the upper body portion 2121 and the upper connecting portion 2122 of the upper insulator 212, and the upper contact portion 214 is fixed in the upper tongue portion 2123 of the upper insulator 212. The rear end of the upper body portion 2121 extends downward to form the covering portion 2124. The upper extension portion 216 is fixed in the covering portion 2124 of the upper insulator 212 and is covered by the covering portion 2124 of the upper insulator 212. The upper welding portion 217 extends out of the bottom of the covering portion 2124 of the insulator 212. The connection between the rear end of the upper body portion 2121 and the top of the covering portion 2124 is recessed downward to form the groove 2125, and the upper bending portion 215 exposes the upper insulator 212 through the groove 2125. The groove 2125 prevents the upper terminal 211 from being deformed and displaced during the high-speed injection molding process. Several protrusions 2126 are provided at the upper and lower ends of the covering portion 2124, and the several protrusions 2126 respectively cover the outer surfaces of the upper extension portion 216 and the upper welding portion 217 to prevent the upper terminal 211 from being deformed during electroplating, transportation, and assembly, thereby ensuring the dimensional stability and assembly accuracy of the upper terminal 211.

[0050] The lower terminal assembly 22 is provided with a plurality of lower terminals 221 and a lower insulator 222, wherein the lower terminals 221 are fixedly disposed in the lower insulator 222. Each of the lower terminals 221 is provided with a lower fixing portion 223, a lower contact portion 224, a lower bending portion 227, a lower extension portion 225, a reverse bending portion 228 and a lower welding portion 226. The front end of the lower fixing portion 223 extends forward to form the lower contact portion 224, the rear end of the lower fixing portion 223 is bent downward to form the lower bending portion 227, and the lower end of the lower bending portion 227 is extended downward to form the lower extension portion 225. The lower end of the lower extension portion 225 is bent forward to form the reverse bending portion 228, and the front end of the reverse bending portion 228 is extended forward to form the lower welding portion 226. The lower extension portion 225 corresponds to the upper extension portion 216 of the upper terminal 211. The lower soldering portion 226 extends in an opposite direction to the upper soldering portion 217 of the upper terminal 211 .

[0051] The lower insulator 222 is provided with a lower body portion 2221, a lower connecting portion 2222 and a lower tongue portion 2223. The front end of the lower body portion 2221 extends forward to form the lower connecting portion 2222, and the front end of the lower connecting portion 2222 extends forward to form the lower tongue portion 2223. The lower fixing portion 223 is fixed in the lower body portion 2221 and the lower connecting portion 2222 of the lower insulator 222 and is covered by the lower body portion 2221 and the lower connecting portion 2222 of the lower insulator 222, the lower contact portion 224 is fixed in the lower tongue portion 2223 of the lower insulator 222, and the lower bending portion 227 extends out of the rear end of the lower body portion 2221 of the lower insulator 222.

[0052] In a specific implementation, the lower body portion 2221 may also extend downward to form the covering portion 2124, and the lower extension portion 225 is fixed in the covering portion 2124 of the lower insulator 222 and covered by the covering portion 2124 of the lower insulator 222. The lower welding portion 226 extends out of the bottom of the covering portion 2124 of the lower insulator 222. The connection between the rear end of the lower body portion 2121 and the top of the covering portion 2124 is recessed downward to form the groove 2125, and the lower bending portion 227 exposes the lower insulator 222 through the groove 2125. The groove 2125 prevents the lower terminal 221 from being deformed during the high-speed injection molding process. A plurality of protrusions 2126 are provided at the upper and lower ends of the covering portion 2124 , and the plurality of protrusions 2126 respectively cover the outer surfaces of the lower extension portion 225 and the lower welding portion 226 to prevent the lower terminal 221 from deforming during electroplating, transportation, and assembly, thereby ensuring the dimensional stability and assembly accuracy of the lower terminal 221 .

[0053] See also Figures 8 to 10, the insulating housing 6 is provided with a plurality of blocks 61 and a plurality of fixing grooves 62. The rear end of the lower surface of the insulating housing 6 extends backward to form a plurality of the blocks 61. A plurality of fixing grooves 62 are arranged between the plurality of the blocks 61. Each of the lower terminals 221 is arranged between two of the blocks 61. The folded portion 228 of the lower terminal 221 is arranged in the fixing groove 62. The lower welding portion 226 of the lower terminal 221 is arranged on the lower surface of the insulating housing 6.

[0054] In this embodiment, the angle α of the lower bending portion 227 is 87-88.5 degrees, so that the lower extension portions 225 and the lower welding portion 226 are tilted forward, and it is easier to make the reverse bending portion 228 enter the fixing groove 62 of the insulating housing 6 during assembly. The angle β of the reverse bending portion 228 is 89-90 degrees, which avoids empty welding during welding. The specific implementation is not limited to this.

[0055] Each of the stoppers 61 is provided with two connecting surfaces 610, two inclined surfaces 611, a plane 612, and two chamfers 613. The rear end surface of the lower wall of the insulating housing 6 extends backward to form a plurality of the connecting surfaces 610, and the connecting surfaces 610 and the rear end surface of the lower wall of the insulating housing 6 jointly define the fixing groove 62. The inflected portion 228 of the lower terminal 221 is engaged between the two connecting surfaces 610. The rear ends of the two connecting surfaces 610 extend backward and extend obliquely toward each other to form the inclined surfaces 611. The inclined surface 611 is used to guide the inflected portion 228 to be positioned in the fixing groove 62. The plane 612 is connected between the two inclined surfaces 611. The plane 612 makes it easy to form the stopper 61 and avoids the generation of burrs, and can also prevent the insulating housing 6 from being undermolded. The chamfer 613 is formed between the inclined surface 611 and the plane 612. The chamfer 613 is used to guide the folded portion 228 to be positioned in the fixing groove 62 .

[0056] As mentioned above, the electrical connector 100 of the utility model adopts an innovative structural design, and the upper bending portion 215 exposes the upper insulator 212 through the groove 2125, thereby preventing the upper terminal 211 from being deformed during the high-speed injection molding process. Several protrusions 2126 respectively cover the outer surfaces of the upper extension portion 216 and the upper welding portion 217 to ensure the dimensional stability and assembly accuracy of the upper terminal 211. One end of the connecting surface 610 extends backward and obliquely to form the inclined surface 611, and the two inclined surfaces 611 are connected to the plane 612. The plane 612 makes it easy to form the block 61 and avoids the generation of burrs, and can also prevent the insulating shell 6 from being under-molded. The angle α of the lower bending portion 227 is 87-88.5 degrees, so that the lower extension portions 225 and the lower welding portion 226 are tilted forward, and the lower terminal 221 has a pre-pressure, so that the reverse bending portion 228 can be more easily inserted into the fixing groove 62 of the insulating housing 6 during assembly to improve assembly accuracy. Therefore, the electrical connector 100 of the utility model has the advantages of stable terminal size, easy mold saturation, avoidance of burrs, and high assembly accuracy.

Claims

1. An electrical connector, characterized in that: include: An insulating shell is provided with a plurality of blocks and a plurality of fixing grooves, and the plurality of fixing grooves are arranged between the plurality of the block blocks, and each of the block blocks is provided with two connecting surfaces, two inclined surfaces, and a plane, and one end of the lower surface of the insulating shell extends backward to form the plurality of connecting surfaces, and the connecting surface is communicated with the fixing groove, and one end of the connecting surface extends backward and extends obliquely to form the inclined surface, and the two inclined surfaces are connected to the plane; an insulating body is fixedly arranged in the insulating shell; an upper terminal group is arranged in the insulating body, and the upper terminal group is provided with a plurality of upper terminals and an upper insulator, and the plurality of upper terminals are fixedly arranged in the upper insulator, and each of the upper terminals is provided with an upper fixing portion, and the rear end of the upper fixing portion is bent downward to form an upper bending portion, and the lower end of the upper bending portion is extended downward to form an upper extension portion, and the lower end of the upper extension portion is bent backward and extended to form an upper welding portion, and the rear end of the upper insulator is extended downward to form A covering portion, wherein the upper extension portion is fixed in the covering portion and is covered by the covering portion, and the upper and lower ends of the covering portion are provided with a plurality of protrusions, and the plurality of protrusions respectively cover the outer surfaces of the upper extension portion and the upper welding portion; and a lower terminal group is arranged in the insulating body, the lower terminal group is provided with a plurality of lower terminals and a lower insulator, and the plurality of lower terminals are fixed in the lower insulator, each of the lower terminals is arranged between the two stoppers, and each of the terminals is provided with a lower fixing portion, the rear end of the lower fixing portion is bent downward to form a lower bending portion, the lower end of the lower bending portion extends downward to form a lower extension portion, the lower end of the lower extension portion is bent forward to form a reverse bending portion, and the front end of the reverse bending portion extends forward to form a lower welding portion, the reverse bending portion is guided to the fixing groove by the inclined surface, the reverse bending portion is engaged between the two connecting surfaces, and the lower welding portion is arranged on the lower surface of the insulating shell.

2. The electrical connector according to claim 1, wherein: The included angle of the lower bending portion is 87-88.5 degrees.

3. The electrical connector according to claim 1, wherein: The connection between the rear end of the upper insulator and the top end of the covering portion is recessed downward to form a groove, and the upper bending portion exposes the upper insulator through the groove.

4. The electrical connector according to claim 1, wherein: The lower extending portion corresponds to the upper extending portion, and the lower welding portion and the upper welding portion extend in opposite directions.

5. An electrical connector, characterized in that: include: An insulating body; and a terminal group, which is arranged in the insulating body, the terminal group is provided with a plurality of terminals and an insulator, the plurality of terminals are fixedly arranged in the insulator, each of the terminals is provided with a fixing portion, the rear end of the fixing portion is bent downward to form a bending portion, the lower end of the bending portion is extended downward to form an extension portion, the rear end of the extension portion is extended backward to form a welding portion, the insulator is provided with a main body portion, the main body portion is extended downward to form a covering portion, the extension portion is fixed in the covering portion and covered by the covering portion, the welding portion extends out of the bottom of the covering portion, the connection between the rear end of the main body portion and the top end of the covering portion is recessed downward to form a groove, and the bending portion exposes the insulator through the groove.

6. The electrical connector according to claim 5, wherein: A plurality of protrusions are arranged at the upper and lower ends of the covering portion, and the plurality of protrusions respectively cover a portion of the extending portion and the welding portion.

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