Electric connector

Abstract

An electric connector comprises a shielding shell, a containing space is formed in the shielding shell, a tongue portion is contained in the containing space, the left side and the right side of the tongue portion respectively extend backwards to form a horizontal extending portion, a wrapping portion is connected between the two horizontal extending portions, and the wrapping portion is connected with the shielding shell. The wrapping part comprises a plurality of terminal channels penetrating through the wrapping part, and a groove communicated to the terminal channels from the rear surface of the wrapping part; the rear end of each terminal is provided with a bending part which extends out of the tongue part and then is bent downwards, an extending part which is formed by extending the tail end of the bending part downwards, and a welding part which is formed by bending the tail end of the extending part backwards and extending; and the outer surface of the upper part of the extension part is exposed out of the coating part through the digging groove.

Description

Technical Field

[0001] The utility model relates to a connector, in particular to an electrical connector with terminals having no burrs. Background Art

[0002] See also Figures 12 to 14 ,like Figures 12 to 14 The figure shows a perspective view of the tongue portion of a USB TYPE-C receptacle connector. The tongue portion 10' includes a plurality of terminals 21' disposed therein and a covering portion 11b' disposed at the rear end of the tongue portion 10'. The front ends of the terminals 21' are fixed within the tongue portion 10', while the rear ends of the terminals 21' extend out of the tongue portion 10', bend downward, and are then fixed within the covering portion 11b'. The distal ends of the terminals 21' extend out of the covering portion 11b', and the rear ends of the terminals 21' are provided with an extension portion 212' that extends downward and is covered by the covering portion 11b'. However, during the injection molding process of the tongue 10', multiple molds A'~D' are usually used to fix the terminal 21' and jointly define a space S11', wherein the mold B' and the mold D' directly clamp and fix the terminal 21', so that the extension portion 212' of the terminal 21' in the space S11' is in a state similar to being suspended, and the suspended extension portion 212' is prone to swinging back and forth, causing friction between the extension portion 212' and the mold D', resulting in burrs at the friction point of the extension portion 212'. The burrs of the extension portion 212' of the above-mentioned terminal 21' are similar to the burrs on the cut surface of the metal material when the metal material is stamped, and both are processing defects that protrude from the metal surface.

[0003] Therefore, it is necessary to provide an electrical connector with terminals having no burrs. Summary of the Invention

[0004] The purpose of the present invention is to provide an electrical connector, comprising: a shielding shell, a housing space formed in the shielding shell; a tongue portion accommodated in the housing space, the left and right sides of the tongue portion respectively extending backward to form a horizontal extension portion, a covering portion connected between the two horizontal extension portions, and the covering portion extending downward and comprising: a plurality of terminal channels passing through the covering portion, a groove connected to the terminal channels from the rear surface of the covering portion, and a plurality of upper grooves recessed upward from the bottom end of the covering portion; and a plurality of terminals arranged in the tongue portion, the front ends of the terminals being fixedly arranged in the tongue portion. The rear end of the terminal is provided with a bent portion formed by extending from the tongue portion and then bending downward, an extension portion formed by the end of the bent portion extending linearly downward, and a welding portion formed by the end of the extension portion bending backward and extending, and the bent portion is fixed in the terminal channel and covered by the covering portion, the extension portion is fixed in the terminal channel and covered by the covering portion, and the front end of the welding portion is covered by the covering portion, wherein the outer surface of the upper portion of the extension portion is exposed to the covering portion by the groove, and the inner surfaces of the lower portion of the extension portion and the front end of the welding portion are exposed to the covering portion.

[0005] In some embodiments, the groove is in the shape of a transversely long strip.

[0006] In some embodiments, a partition is provided between each two of the terminal channels, the middle portion of the partition is exposed from the covering portion through the groove, the end of the welding portion extends out of the covering portion, and the front surface of the upper portion of the covering portion is provided with a plurality of entrances to the terminal channels.

[0007] Another object of the present invention is to provide an electrical connector, comprising: a base, wherein the left and right sides of the base extend rearward to form a horizontal extension portion, a covering portion is connected between the two horizontal extension portions, and the covering portion extends downward and comprises: a plurality of terminal channels passing through the covering portion, a groove connected to the terminal channels from the rear surface of the covering portion; and a terminal group disposed in the base, the terminal group having a plurality of branch terminals, the front end of the terminal being fixed in the base, and the rear end of the terminal being provided with a terminal extending out of the base A bending portion is formed by bending downward, an extension portion is formed by the bottom end of the bending portion extending linearly downward, and a welding portion is formed by bending backward and extending from the bottom end of the extension portion, the bending portion is fixed in the terminal channel and covered by the covering portion, the extension portion is fixed in the terminal channel and covered by the covering portion, the front end of the welding portion is covered by the covering portion, the outer surface of the upper portion of the extension portion is exposed to the covering portion through the groove, and the inner surfaces of the lower portion of the extension portion and the front end of the welding portion are exposed to the covering portion.

[0008] As described above, the structure of the electrical connector of the present invention can add a fixing end to the rear end of the terminal during the manufacturing process, thereby preventing the terminal from shaking during the molding process and thus preventing burrs from forming on the terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to make the above and other purposes, features, advantages and embodiments of the present invention more obvious and easy to understand, the content of this case can be better understood when read in conjunction with the accompanying drawings.

[0010] Figure 1 It is an exploded view of the electrical connector of the present utility model.

[0011] Figure 2 It is a three-dimensional diagram of the electrical connector of the utility model from another perspective.

[0012] Figure 3 It is a partial exploded view of the tongue of the electrical connector of the present invention.

[0013] Figure 4 It is an exploded view of the tongue of the electrical connector of the present invention.

[0014] Figure 5 It is a three-dimensional diagram of the seat body of the electrical connector of the present invention.

[0015] Figure 6 It is a three-dimensional diagram of the seat body of the electrical connector of the present invention from another perspective.

[0016] Figure 7 It is a three-dimensional diagram of the terminal group of the electrical connector of the present invention.

[0017] Figure 8 It is a partial cross-sectional view of the tongue of the electrical connector of the present invention.

[0018] Figure 9 It is a three-dimensional diagram of the tongue of the electrical connector of the present invention.

[0019] Figure 10 It is a three-dimensional diagram of the tongue of the electrical connector of the present invention from another perspective.

[0020] Figure 11 The utility model is a schematic diagram of the mold arrangement around the rear end of the terminal of the electrical connector during the injection molding process.

[0021] Figure 12 It is a three-dimensional diagram of the tongue of a conventional electrical connector.

[0022] Figure 13 It is a three-dimensional diagram of the tongue of a conventional electrical connector from another perspective.

[0023] Figure 14The figure is a schematic diagram of the mold arrangement around the rear end of the terminal of a conventional electrical connector during injection molding. DETAILED DESCRIPTION

[0024] To further illustrate the technical content, structural features, objectives, and functions of the electrical connector of the present invention, the following examples are provided with accompanying drawings for detailed description. In this embodiment, the electrical connector 100 of the present invention is a Type-C connector. In practice, the electrical connector 100 of the present invention may also be other types of connectors.

[0025] See also Figures 1 to 4 ,like Figures 1 to 4 As shown, the electrical connector 100 of the present invention includes a shielding shell 60 defining a housing space, a tongue 10 housed in the housing space, and a colloid 50 applied to the rear end of the tongue 10 to seal the gap between the tongue 10 and the shielding shell 60. Furthermore, the tongue 10 further includes a seat 70, a terminal block 20 assembled and joined to the seat 70 by in-mold molding, a center piece 30 disposed in the center of the terminal block 20, and two shielding pieces 40 disposed at the upper and lower ends of the rear edge of the tongue 10, respectively.

[0026] See also Figure 1 、 Figures 5 to 7 The terminal assembly 20 includes a plurality of branch terminals 21. The rear ends of the terminals 21 are provided with a bent portion 211 extending from the base 70 and then bending downward, an extension portion 212 extending linearly downward from the bottom end of the bent portion 211, and a welding portion 213 extending from the bottom end of the extension portion 212 and bending backward. To further secure the terminals 21, a retaining member 11 is provided at the rear end of the base 70. The retaining member 11 includes horizontal extensions 11a extending backward from the left and right sides of the base 70, and a covering portion 11b extending downward and connecting between the two horizontal extensions 11a. The covering portion 11b is configured to cover and secure the bent portion 211, the extended portion 212, and the soldering portion 213 of the terminal 21. The covering portion 11b includes a plurality of terminal passages 111 extending through the covering portion 11b, a cutout 112 extending from the rear surface of the covering portion 11b to the terminal passages 111, and a plurality of upper recesses 113 extending upward from the bottom end of the covering portion 11b. The cutout 112 is a horizontally elongated strip, and the entrance 111a of the terminal passage 111 is located on the front surface of the upper portion of the covering portion 11b. The middle portion of the partition 111b between the terminal passages 111 is exposed from the covering portion 11b via the cutout 112.

[0027] See also Figures 8 and 9The terminal channel 111 is configured to respectively accommodate the bent portion 211 and the extended portion 212 of one terminal 21. The terminal 21 extends horizontally backward and enters the terminal channel 111 through the entrance 111a. Then, the terminal 21 turns downward so that the extended portion 212 of the terminal 21 passes through the covering portion 11b along the terminal channel 111, and turns backward again at a position close to the bottom edge of the covering portion 11b so that the welding portion 213 extends horizontally to the outside of the covering portion 11b, wherein the outer surface of the upper portion of the extension portion 212 is exposed to the covering portion 11b by the groove 112, and the inner surface of the lower portion of the extension portion 212 and the front end of the welding portion 213 are exposed to the covering portion 11b, the end of the welding portion 213 extends out of the covering portion 11b, and the upper groove 113 is arranged between two adjacent terminals 21.

[0028] See also Figures 9 to 11 The base body 70 is manufactured using an injection molding process, and during the injection molding of the base body 70, multiple molds A to E are used to secure the terminal 21 and collectively define a space S11. Since the retaining member 11 in the present invention is composed of the two horizontal extensions 11a and the covering portion 11b, with a gap left between the two horizontal extensions 11a and the covering portion 11b, molds B and D directly clamp and secure the terminal. The covering portion 11b is provided with the groove 112 connected to the terminal channel 111, allowing mold E to directly abut the extension 212. The bottom edge of the covering portion 11b is provided with the upper groove 113, allowing mold D to further secure the soldering portion 213. By increasing the contact between mold E and the terminal 21 as described above, movement of the terminal 21 during injection molding can be effectively prevented, reducing burrs on the terminal 21.

[0029] In summary, the electrical connector 100 of the present invention has an innovative structural design, in which the groove 112 is provided on the covering portion 11b at the rear end of the tongue 10. The extension portion 212 of the terminal 21 is exposed outside the covering portion 11b through the groove 112, thereby increasing the fixing end of the mold on the rear end of the terminal 21, preventing the rear end of the terminal 21 from moving during the injection molding process, and ensuring that the terminal will not produce burrs due to friction between itself and the mold.

[0030] Although the present invention has been disclosed above with reference to the embodiments, they are not intended to limit the present invention. Anyone with ordinary skill in the art may make slight changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. An electrical connector, characterized in that: The invention comprises: a shielding shell, wherein a housing space is formed in the shielding shell; a tongue portion accommodated in the housing space, wherein the left and right sides of the tongue portion respectively extend backward to form a horizontal extension portion, a covering portion is connected between the two horizontal extension portions, and the covering portion extends downward and comprises: a plurality of terminal channels passing through the covering portion, a groove connected to the terminal channel from the rear surface of the covering portion, and a plurality of upper grooves recessed upward from the bottom end of the covering portion; and a plurality of terminals arranged in the tongue portion, wherein the front end of the terminal is fixed in the tongue portion, and the rear end of the terminal is provided with A bent portion is formed by extending the tongue portion and then bending downward, an extension portion is formed by the end of the bent portion extending linearly downward, and a welding portion is formed by the end of the extension portion bending backward and extending, and the bent portion is fixed in the terminal channel and covered by the covering portion, the extension portion is fixed in the terminal channel and covered by the covering portion, and the front end of the welding portion is covered by the covering portion, wherein the outer surface of the upper portion of the extension portion is exposed from the covering portion by the groove, and the inner surfaces of the lower portion of the extension portion and the front end of the welding portion are exposed from the covering portion.

2. The electrical connector according to claim 1, wherein: The groove is in a transverse long strip shape.

3. The electrical connector according to claim 1, wherein: A partition is provided between each two terminal channels, the middle section of the partition is exposed from the covering portion through the groove, the end of the welding portion extends out of the covering portion, and the front surface of the upper portion of the covering portion is provided with a plurality of entrances to the terminal channels.

4. An electrical connector, characterized in that: The invention comprises: a base, the left and right sides of the base respectively extend backward to form a horizontal extension portion, a covering portion is connected between the two horizontal extension portions, and the covering portion extends downward and comprises: a plurality of terminal channels passing through the covering portion, a groove connected to the terminal channel from the rear surface of the covering portion; and a terminal group, which is arranged in the base, the terminal group is provided with a plurality of branch terminals, the front end of the terminal is fixed in the base, and the rear end of the terminal is provided with a bent portion formed by extending out of the base and then bending downward. A bending portion, an extension portion formed by the bottom end of the bending portion extending linearly downward, and a welding portion formed by the bottom end of the extension portion being bent backward and extended, the bending portion is fixed in the terminal channel and covered by the covering portion, the extension portion is fixed in the terminal channel and covered by the covering portion, the front end of the welding portion is covered by the covering portion, the outer surface of the upper portion of the extension portion is exposed from the covering portion by the groove, and the inner surfaces of the lower portion of the extension portion and the front end of the welding portion are exposed from the covering portion.

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