Electric connector

Abstract

The utility model provides an electric connector, including an insulation body, a terminal module, a metal housing, and a metal cover, the insulation body is provided with a base portion and a pair of tongue plates extending forward from the base portion, the metal housing is annular and surrounds the periphery of the insulation body, and the metal cover is provided with a plurality of terminals. The metal cover comprises a pair of side covers and a rear cover which are clamped on the two sides of the metal shell, and the bottom edge of each side cover is provided with a horizontally-arranged supporting piece so as to be connected to a circuit board in a pressing mode. The supporting sheet is provided with a lower surface facing the circuit board, a glue hiding pit formed on the lower surface, an upper surface opposite to the circuit board, and a convex hull protruding from the upper surface. According to the utility model, the structure of the metal cover is optimized, and the glue hiding pits on the supporting sheets are used for accommodating redundant glue, so that the phenomenon that the glue flows around and hunches up the metal cover and the terminal welding pins is avoided, the coplanarity of the welding pins of the terminal module and the circuit board during installation is improved, and the risks of pseudo soldering, missing soldering, short circuit and the like are avoided or reduced.

Description

Technical Field

[0001] The utility model relates to the field of electrical connection, in particular to an electrical connector. Background Art

[0002] Type C USB electrical connector is a component widely used in various digital products and electronic products. It usually includes an insulating plastic body, a terminal module and a metal shell. The terminal module is usually wrapped in an insulating body. In order to achieve good signal transmission quality, a metal isolation plate is also set in the terminal module of the existing Type C USB electrical connector. The metal isolation plate is clamped between the upper and lower rows of terminals to shield interference signals. The metal shell surrounds the insulating body to achieve assembly and fixation, which plays a role of shielding and protection. At the beginning of the design, it is usually necessary to first perform a board operation on the Type C USB electrical connector. At this time, the electrical connector needs to be fixed by dispensing glue, and the location of the dispensing glue is generally set on a surface or edge of the metal shell. However, it is found in practice that the glue can easily arch the solder pins of the electrical connector terminals, making the solder pins have the risk of cold soldering, empty soldering or short circuit. Utility Model Content

[0003] The technical problem solved by the utility model is to provide an electrical connector to improve the risk of the metal shell being easily arched due to the flow of excess glue in the prior art, thereby causing the terminal to be short-circuited due to poor soldering.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions: an electrical connector, comprising an insulating body, a terminal module clamped on the inner side of the insulating body, a metal shell installed on the insulating body, and a metal cover covered on the metal shell, the insulating body is provided with a base and a pair of tongue plates extending forward from the base, the metal shell is annular and surrounds the outer periphery of the insulating body, the metal cover comprises a pair of side covers and a back cover clamped on both sides of the metal shell, the bottom edge of the side cover is provided with a horizontally arranged support sheet for crimping on a circuit board, the support sheet is provided with a lower surface facing the circuit board, a glue pit formed on the lower surface, an upper surface facing away from the circuit board, and a convex bump protruding from the upper surface.

[0005] Furthermore, the depth of the Tibetan rubber pit does not exceed 1.5 mm, and the Tibetan rubber pit is circular, and its diameter does not exceed 1.5 mm.

[0006] Furthermore, the metal shell is provided with a top wall, a bottom wall and a pair of C-shaped side walls, an insertion cavity is formed between the top wall, the bottom wall and the side walls, the side wall is provided with an outer protrusion protruding outward, and the top wall is provided with a pair of elastic arms protruding toward the insertion cavity.

[0007] Furthermore, the metal cover is provided with a first fixing plate, a second fixing plate and a positioning plate distributed front and back along the bottom edge of the side cover, the first fixing plate is integrally connected to the support plate and are arranged perpendicular to each other; the support plate is in the shape of a flat plate, and the support plate is integrally connected to the first fixing plate and the bottom edge of the side cover.

[0008] Furthermore, the first fixing plate and the second fixing plate both protrude outward beyond the outer surface of the side cover, and the protruding distance of the first fixing plate exceeds the protruding distance of the second fixing plate.

[0009] Further, the width of the supporting plate in the front-to-back direction is greater than the width of the first fixing plate and the second fixing plate in the front-to-back direction.

[0010] Furthermore, the positioning piece is located at the rear edge of the side cover and is fixed with the back cover by a buckle; the back cover includes a transversely extending main cover plate and a pair of folding plates extending forward from both ends of the main cover plate, and the bottom edge of the main cover plate is provided with a pair of plug-in pins extending downward from the bottom surface of the insulating body, and the pair of folding plates are fixed with the positioning piece by a buckle.

[0011] Furthermore, a slot hole which is snap-fitted with the metal shell is formed on the side cover of the metal cover, and the outer protruding piece is snap-fitted into the slot hole.

[0012] Furthermore, the first fixing plate and the second fixing plate extend downward to the same height so that their bottom edges are flush with each other.

[0013] Compared with the prior art, the utility model optimizes the structure of the metal cover and utilizes the glue-hiding pits on the support plate to accommodate excess glue, thereby preventing the glue from flowing around and arching the metal cover and the terminal soldering feet, improving the coplanarity of the soldering feet of the terminal module and the circuit board during installation, and avoiding or reducing the risks of cold solder joints, empty solder joints, short circuits, etc. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0015] Figure 2 It is a three-dimensional diagram of the terminal module of the electrical connector of the utility model.

[0016] Figure 3 This is an exploded view of the electrical connector of the present invention.

[0017] Figure 4 It is a partial enlarged view of the metal shell of the electrical connector of the utility model.

[0018] Figure 5 It is a schematic diagram of the first fixing plate and the supporting plate of the electrical connector of the utility model. DETAILED DESCRIPTION

[0019] See also Figures 1 to 5 As shown, the utility model provides an electrical connector, including: an insulating body 10 , a terminal module 20 clamped inside the insulating body 10 , a metal shell 30 installed on the insulating body 10 , and a metal cover 40 covering the metal shell 30 .

[0020] The insulating body 10 is provided with a base 11 and a docking tongue 12 extending forward from the base 11. The upper and lower surfaces of the base 11 are provided with protrusions 13 for interfering and fixing with the metal shell 30. In addition, both ends of the base 11 are provided with C-shaped side surfaces 14 for abutting against the metal shell 30, and the side surfaces 14 are also provided with protrusions 13 for interfering and fixing with the metal shell 30. The docking tongue 12 is in the shape of a flat plate for docking with a docking end electrical connector (not shown), and the upper and lower surfaces of the docking tongue 12 are used to carry the terminal module 20. Preferably, a pair of protruding positioning columns 15 are provided on the bottom surface or lower surface of the base 11, and the positioning columns 15 are used to position the insulating body 10 on a circuit board (not shown).

[0021] The terminal module 20 includes an upper row of terminals 210 and a lower row of terminals 220 distributed on the upper and lower sides of the docking tongue plate 12, and is used to achieve electrical connection with a docking end electrical connector (not shown). Figure 2 As shown, the ends of the upper row of terminals 210 and the lower row of terminals 220 extend out of the insulating body 10 for welding to a circuit board, wherein the upper row of terminals 210 and the lower row of terminals 220 are each provided with a welding foot 21, thereby forming two rows of welding feet 21 on the bottom surface of the insulating body 10, the welding feet 21 protrude out of the bottom surface of the base 11 of the insulating body 10, and are welded to the circuit board as the ends of the upper row of terminals 210 and the lower row of terminals 220. Preferably, the upper row of terminals 210 and the lower row of terminals 220 each include a pair of outermost grounding terminals 22, and the outer edge of the grounding terminal 22 is provided with an integrally protruding overlapping foot 24 for overlapping to a metal partition 23 (as described below). Preferably, the terminal module 20 includes a metal partition 23 between the upper row of terminals 210 and the lower row of terminals 220. The metal partition 23 is in the shape of a flat plate, and a pair of mounting feet 25 are provided on both side edges thereof, which are integrally bent and extended outward. The mounting feet 25 are integrally connected with the metal partition 23 through a thickened portion 26, and the thickened portion 26 is wider than the mounting feet 25. The ends of the mounting feet 25 extend in the vertical direction and are perpendicular to the surface of the metal partition 23. In addition, a plurality of openings 27 are provided on the front side edge of the metal partition 23, and the openings 27 are buried in the docking tongue plate 12.

[0022] The metal shell 30 is annular and includes a top wall 31, a bottom wall 32 and a pair of C-shaped side walls 33. An insertion cavity 34 is formed between the top wall 31, the bottom wall 32 and the side walls 33, and the top wall 31 and the bottom wall 32 respectively cover the upper surface and the lower surface of the base 11. The top wall 31 is provided with a pair of elastic arms 35 protruding toward the insertion cavity 34.

[0023] The metal cover 40 includes a top cover 41, a pair of side covers 42 and a back cover 43 which are integrally stamped. The pair of side covers 42 are integrally bent from both sides of the top cover 41 and together with the top cover 41 form a U-shaped structure. The top cover 41 covers the top wall 31 of the metal shell 30, and the side cover 42 covers the pair of side walls 33. The side cover 42 includes a first fixing piece 44, a second fixing piece 45 and a positioning piece 46 which are distributed from front to back. The first fixing piece 44 and the second fixing piece 45 both extend in the vertical direction so as to be inserted on the circuit board for fixing. The first fixing piece 44 and the second fixing piece 45 are arranged front to back. The bottom edge of the side cover 42 is connected by a horizontally extending support piece. 47 is integrally connected with the first fixing piece 44, the supporting piece 47 is integrally connected between the bottom edge of the side cover 42 and the first fixing piece 44, and the width of the supporting piece 47 along the front-to-back direction is greater than the width of the first fixing piece 44 along the front-to-back direction, and is used to support the surface of the circuit board, which is beneficial to the positioning of the metal cover 40 and the circuit board during the board hitting operation. In a preferred embodiment of the utility model, the supporting piece 47 is in the shape of a plate, and a glue pit 470 is provided on its lower surface 471. The glue pit 470 is recessed in the vertical direction to form on the lower surface 471 of the supporting piece 47, but does not penetrate the upper surface 472 of the supporting piece 47, but forms a convex bump 473 on the upper surface 472 of the supporting piece 47, such as Figure 5As shown, the convex bump 473 protrudes upward from the upper surface 472. Since the convex bump 473 does not penetrate the support sheet 47, the glue cannot pass through the glue-hiding pit 470 and overflow onto the upper surface 472 to pollute the upper surface 472 or affect the appearance of the support sheet 47. The setting of the glue-hiding pit 470 is conducive to the glue entering therein during the flow process, thereby reducing excess glue between the lower surface of the support sheet 47 and the circuit board, avoiding the support sheet 47 from being arched due to excessive glue that cannot be discharged, and ensuring that there is no problem of cold soldering between the electrical connector and the circuit board. Preferably, the depth of the glue-hiding pit 470 does not exceed 1.5 mm, and the glue-hiding pit 470 is circular with a diameter not exceeding 1.5 mm. The second fixing piece 45 is located at the rear side of the first fixing piece 44, and is connected to the side cover 42 in one piece. The second fixing piece 45 is offset outward from the side cover 42 by a certain distance, so as to protrude outward beyond the outer surface of the side cover 42. It should be noted that the first fixing piece 44 also protrudes outward beyond the outer surface of the side cover 42, and the protruding distance of the first fixing piece 44 exceeds the protruding distance of the second fixing piece 45, that is, the distance between the first fixing piece 44 and the outer surface of the side cover 42 is greater than the distance between the second fixing piece 45 and the outer surface of the side cover 42, and the first fixing piece 44 and the second fixing piece 45 are arranged flush, that is, the two extend downward to the same height, so that the bottom edges of the two are flush, so as to be plugged into the circuit board. Preferably, the first fixing piece 44 and the second fixing piece 45 are both provided with a through hole 450, which is inserted into the circuit board to improve the bonding force with the circuit board. The positioning piece 46 is located at the rear edge of the side cover 42, and is used for snapping and fixing with the rear cover 43, and a snap hole 460 is provided on the positioning piece 46 for snapping and fitting with the rear cover 43. The rear cover 43 extends transversely to the rear side of the U-shaped structure, and the rear cover 43 includes a transversely extending main cover plate 430 and a pair of folding plates 431 bent forward and extended from both ends of the main cover plate 430, the main cover plate 430 is integrally connected with the top cover 41, and a pair of vertically extending plug pins 432 are provided at the bottom edge of the main cover plate 430, and the plug pins 432 protrude from the bottom surface of the base 11, the pair of folding plates 431 overlap the outer surface of the positioning piece 46, and are provided with a protrusion 433 that is snapped into the snap hole 460, so that the folding plate 431 and the positioning piece 46 are snapped and positioned.

[0024] Preferably, the side cover 42 of the metal cover 40 is also provided with a slot hole 421 which snaps into the side wall 33 of the metal shell 30. Correspondingly, the side wall 33 of the metal shell 30 is provided with an outwardly protruding piece 331. When the metal cover 40 is assembled with the metal shell 30, the outward protruding piece 331 is snapped into the slot hole 421.

[0025] Of course, as an alternative embodiment of the present invention, the support sheet 47 and the rubber pit 470 can also be arranged on the second fixing sheet 45, and only a simple design change is required, which also belongs to the scope of the present invention and is not described in detail here. In other words, the support sheet 47 and the rubber pit 470 can be formed on the first fixing sheet 44 or the second fixing sheet 45.

[0026] In summary, the utility model optimizes the structure of the metal cover 40 and utilizes the glue storage pits 470 on the support plate 47 to accommodate excess glue, thereby preventing the glue from flowing around and arching the metal cover 40 and the terminal soldering feet 21, thereby improving the coplanarity of the soldering feet 21 of the terminal module 20 and the circuit board during installation, and avoiding or reducing the risks of cold solder joints, empty solder joints, short circuits, etc.

[0027] The above is only the best embodiment of the utility model and does not limit the utility model in any form. Any technician familiar with the field can make many possible changes and modifications to the technical solution of the utility model by using the method disclosed above without departing from the scope of the technical solution of the utility model, which all fall within the scope of protection of the claims.

Claims

1. An electrical connector, comprising an insulating body, a terminal module clamped on the inner side of the insulating body, a metal shell mounted on the insulating body, and a metal cover covered on the metal shell, wherein the insulating body is provided with a base and a pair of tongue plates extending forward from the base, the metal shell is annular and surrounds the outer periphery of the insulating body, characterized in that: The metal cover includes a pair of side covers and a back cover clamped on both sides of the metal shell. The bottom edge of the side cover is provided with a horizontally arranged support sheet for crimping onto a circuit board. The support sheet is provided with a lower surface facing the circuit board, a glue-containing pit formed on the lower surface, an upper surface facing away from the circuit board, and a convex bump protruding from the upper surface.

2. The electrical connector according to claim 1, wherein: The depth of the Tibetan rubber pit does not exceed 1.5 mm, and the Tibetan rubber pit is circular, and its diameter does not exceed 1.5 mm.

3. The electrical connector according to claim 2, wherein: The metal shell is provided with a top wall, a bottom wall and a pair of C-shaped side walls, an insertion cavity is formed between the top wall, the bottom wall and the side walls, the side walls are provided with outwardly protruding pieces, and the top wall is provided with a pair of elastic arms protruding toward the insertion cavity.

4. The electrical connector according to claim 3, wherein: The metal cover is provided with a first fixing plate, a second fixing plate and a positioning plate distributed front and back along the bottom edge of the side cover, the first fixing plate is integrally connected with the supporting plate and are arranged perpendicular to each other; the supporting plate is in the shape of a flat plate, and the supporting plate is integrally connected with the first fixing plate and the bottom edge of the side cover.

5. The electrical connector according to claim 4, wherein: The first fixing plate and the second fixing plate both protrude outward beyond the outer surface of the side cover, and the protruding distance of the first fixing plate exceeds the protruding distance of the second fixing plate.

6. The electrical connector according to claim 5, wherein: The width of the supporting plate in the front-to-back direction is greater than the width of the first fixing plate and the second fixing plate in the front-to-back direction.

7. The electrical connector according to claim 6, wherein: The positioning piece is located at the rear edge of the side cover and is fixed with the back cover by a buckle; the back cover includes a main cover plate extending laterally and a pair of folding plates extending forward from both ends of the main cover plate, and the bottom edge of the main cover plate is provided with a pair of plug-in pins extending downward from the bottom surface of the insulating body, and the pair of folding plates are fixed with the positioning piece by a buckle.

8. The electrical connector according to claim 7, wherein: The side cover of the metal cover is also provided with a slot hole which is snap-fitted with the metal shell, and the outer protruding piece is snap-fitted into the slot hole.

9. The electrical connector according to claim 8, wherein: The first fixing plate and the second fixing plate extend downward to the same height so that their bottom edges are flush with each other.

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