CN221102613U

CN221102613U - Electric connector

Info

Publication number: CN221102613U
Application number: CN202322658538.9U
Authority: CN
Inventors: 陈昌耀; 张俊宝; 吴祝平; 方志宏
Original assignee: Drapho Electronics Technology Co ltd
Current assignee: Drapho Electronics Technology Co ltd
Priority date: 2023-09-28
Filing date: 2023-09-28
Publication date: 2024-06-07
Anticipated expiration: 2033-09-28

Abstract

The utility model provides an electric connector, which comprises an insulating body, a terminal module accommodated in the insulating body and a metal shell assembled on the insulating body, wherein the metal shell is provided with a top wall, a bottom wall and a pair of side walls, a splicing seam and a plurality of buckling pieces distributed along the splicing seam in a staggered way are formed on the top wall, the buckling pieces comprise a front buckling piece, a plurality of middle buckling pieces and a rear buckling piece, and the length of the rear buckling piece in the front-rear direction is greater than half of the length of the middle buckling piece. According to the utility model, through optimizing the structural design of the metal shell, the rear buckling piece at the splicing seam is reinforced, so that the strength of the blanking die core is enhanced, the condition of tipping is improved, the maintenance cost is reduced, and meanwhile, the bonding strength at the splicing seam is further improved, so that the structure of the metal shell is more reliable and stable.

Description

Electric connector

Technical Field

The present disclosure relates to electrical connectors, and particularly to an electrical connector.

Background

The Type C USB electric connector is widely applied to various digital products and electronic products at present, and generally comprises an insulating plastic body, conductive terminals and a metal shell, wherein the conductive terminals are generally wrapped in the insulating plastic body, and in order to achieve good signal transmission quality, a metal isolation plate is arranged in the conventional Type C USB electric connector, is clamped between an upper row of terminals and a lower row of terminals and is used for shielding interference signals, and the metal shell surrounds the periphery of the insulating plastic body to realize assembly and fixation and play a role in shielding and protection. For the Type C USB electrical connector, the metal shell is one of the currently necessary components, and is generally formed by stamping and assembled on the insulating body, and since the metal shell is bent into a ring shape to achieve end-to-end splicing, the top wall or the bottom wall of the metal shell will leave a splice seam, and the bonding strength of the splice seam will directly affect the overall strength and reliability of the metal shell, and the existing shell structure design at the splice seam is to be optimized, especially at the position of the die insert lower position (see a in fig. 7), which is relatively weak, not only affects the strength of the metal shell, but also may cause an increase in maintenance cost due to the condition of die insert tipping.

Disclosure of utility model

The present utility model provides an electrical connector to solve at least one of the problems of weak mold core, poor strength of metal housing, and the like in the prior art.

In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides an electric connector, includes the insulator, holds terminal module in the insulator, assembles the metal casing on the insulator, the metal casing is equipped with a roof, a diapire and a pair of lateral wall, be formed with a splice seam on the roof, along a plurality of knot that splice seam staggered distribution hold the piece, a plurality of knot hold the piece including a preceding knot and hold the piece, a plurality of middle knot hold the piece, a back knot hold the piece, the back detains and hold the piece along the length in the fore-and-aft direction and be greater than middle knot hold the half of piece length.

Further, the rear fastening sheet is provided with a front side and a rear side which are parallel to each other, and the front side and the rear side of the middle fastening sheet are not parallel to each other.

Further, the insulating body is provided with a base part and a butt tongue plate which integrally extends forwards from the base part, and the base part is provided with an upper surface, a lower surface and a pair of C-shaped side surfaces; the pair of side walls of the metal shell are C-shaped and are in interference fit with the C-shaped side surfaces.

Further, the front buckling piece is arranged adjacent to the front side edge of the top wall, and the front buckling piece is welded at the splicing seam; the rear retention tab is disposed adjacent the rear side edge of the top wall.

Further, an inserting cavity is formed among the top wall, the bottom wall and the side wall of the metal shell, the top wall and the bottom wall are respectively provided with a pair of elastic arms and a pair of clamping arms, and the elastic arms inwards protrude into the inserting cavity and are matched with the base; the splice seam extends rearwardly between the pair of retaining arms.

Further, a pair of engagement areas are respectively arranged on the upper surface and the lower surface of the base, the engagement areas are adjacently connected with the C-shaped side surface, and a gap is formed between the engagement areas and the inner surface of the metal shell.

Further, a pair of raised areas are arranged on the upper surface and the lower surface of the base, and the raised areas are positioned at the inner sides of the pair of engagement areas and are in a convex shape compared with the engagement areas.

Further, the raised areas are in interference fit with the inner surfaces of the top and bottom walls; the engagement zone is a flat surface that leaves the gap with the inner surfaces of the top and bottom walls.

Further, two ends of the spring arm are integrally connected with the top wall; the clamping arm is formed at the rear side edge of the top wall, is bent downwards to be in limit fit with the base part, one end of the clamping arm is integrally connected with the top wall, and the other end of the clamping arm is a free tail end.

Compared with the prior art, the utility model strengthens the rear buckling piece at the splicing seam by optimizing the structural design of the metal shell, thereby enhancing the strength of the blanking die core, improving the condition of tipping, reducing the maintenance cost and further improving the bonding strength at the splicing seam, so that the structure of the metal shell is more reliable and stable.

Drawings

Fig. 1 is a perspective view of an electrical connector according to the present utility model.

Fig. 2 is an exploded view of the electrical connector of the present utility model.

Fig. 3 is a front view of a metal housing and a metal cover of the electrical connector according to the present utility model.

Fig. 4 is an exploded view of another view of the electrical connector of the present utility model.

Fig. 5 is a schematic view of a top wall of a metal housing of the electrical connector according to the present utility model.

Fig. 6 is a rear side view of a metal housing of the electrical connector of the present utility model.

Fig. 7 is a schematic top view of a metal housing of a prior art electrical connector.

Detailed Description

Referring to fig. 1 to 6, the present utility model provides an electrical connector, comprising: the terminal module comprises an insulating body 10, a terminal module 20 clamped inside the insulating body 10, a metal shell 30 mounted on the insulating body 10 and a metal cover 40 covered on the metal shell 30.

The insulation body 10 is provided with a base 11 and a butt-joint tongue plate 12 extending forwards from the base 11, the upper surface and the lower surface of the base 11 are provided with a plurality of concave parts 13 formed by downwards sinking and used for clamping and limiting the metal shell 30, preferably, the concave parts 13 are in a V shape, specifically, the upper surface of the base 11 is provided with two concave parts 13, the lower surface of the base 11 is also provided with two concave parts 13, and the concave parts 13 on the upper surface and the concave parts 13 on the lower surface are arranged in an up-down symmetry way relative to the butt-joint tongue plate 12. In addition, both ends of the base 11 are provided with C-shaped side surfaces 14 for abutting against the metal housing 30 to achieve fastening interference with the metal housing 30. The butt-joint tongue plate 12 is flat and is used for butt-joint with a butt-joint end electric connector (not shown), and the upper surface and the lower surface of the butt-joint tongue plate 12 are used for bearing the terminal module 20.

In the preferred embodiment of the present utility model, the upper surface and the lower surface of the base 11 are provided with a pair of engaging areas 111 and a pair of raised areas 112, and the lower surface is exemplified by the engaging areas 111 at both ends of the lower surface and engaged with the C-shaped side surfaces 14 at both ends of the base 11, the engaging areas 111 are located at the outer sides of the concave portions 13, the raised areas 112 are located at the inner sides of the pair of engaging areas 111 and correspond to the positions of the concave portions 13 in front and back, preferably, the raised areas 112 are located at the rear sides of the concave portions 13 and are adjacent to the concave portions 13, and the raised areas 112 protrude downward beyond the concave portions 13 and the engaging areas 111, as shown in fig. 5, the engagement region 111 is between the raised region 112 and the C-shaped side surface 14, the raised region 112 may be used to abut against the inner surface 31 of the metal shell 30, so as to be directly fixed by interference with the inner surface 301 of the metal shell 30, and a gap (not shown) is formed between the engagement region 111 and the inner surface 301 of the metal shell 30, that is, the engagement region 111 is not directly contacted with the metal shell 30, preferably, by reducing the plastic amount of the engagement region 111 in the injection molding process of the insulating body, so that the engagement region 111 will not directly interfere with the inner surface 301 of the metal shell 30. Correspondingly, the upper surface of the base 11 is also provided with a joining region 111 and a raising region 112, which are disposed vertically corresponding to the joining region 111 and the raising region 112 on the lower surface of the base 11, so that the upper and lower surfaces of the base 11 are provided with at least four joining regions 111 and four raising regions 112, the four raising regions 112 are respectively in interference contact with the inner surface 31 of the metal shell 30, and gaps (not shown) are formed between the four joining regions 111 and the inner surface 301 of the metal shell 30 so as to avoid interference between the joining regions 111 and the metal shell 30, and the design is beneficial to assembly of the metal shell 30 and the insulation body 10, i.e. in the process of assembling the metal shell 30 to the insulation body 10, the metal shell 30 is not easy to exert an acting force on the insulation body 10 at the joining region 111 due to the existence of the gaps (not shown), so that the problem that the insulation body 10 rotates due to stress is avoided.

The terminal module 20 includes upper and lower terminals disposed on the upper and lower sides of the butt tongue plate 12 for electrically connecting with a butt-end electrical connector (not shown). The rear ends of the upper and lower rows of terminals extend out of the insulating body 10 for soldering to a circuit board (not shown).

The metal shell 30 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 are respectively covered on the upper surface and the lower surface of the base 11, a pair of spring arms 35 and a pair of retaining arms 36 protruding toward the insertion cavity 34 are disposed on the top wall 31 and the bottom wall 32, and, for example, the top wall 31 is punched downwards from the top wall 31, so as to protrude into the insertion cavity 34 and protrude into the V-shaped recess 13 of the base 11, thereby realizing a limit fit with the base 11, preferably, two ends of the spring arms 35 are integrally connected with the top wall 31, while the retaining arms 36 are formed on the rear side edge 316 of the top wall 31, which is bent downwards to extend so as to realize a limit fit with the base 11, preferably, one end of the retaining arms 36 is integrally connected with the top wall 31, and the other end is a free end, which is in limit fit with the base 11. The bottom wall 32 is similar to the top wall 31 in structure, that is, the bottom wall 32 is provided with a pair of spring arms 35 and a pair of holding arms 36 protruding upwards into the insertion cavity 34, and the spring arms 35 on the bottom wall 32 are arranged up and down correspondingly, which is not described herein.

In addition, the top wall 31 of the metal shell 30 is provided with a splice seam 310, a plurality of fastening tabs staggered along the splice seam 310, the splice seam 310 extends from front to back in a curved manner, one end of the fastening tab extends to the front side edge 315 of the top wall 31, one end of the fastening tab extends to the rear side edge 316 of the top wall 31, the fastening tabs include a front fastening tab 311 adjacent to the front side edge 315 of the top wall 31, a rear fastening tab 313 adjacent to the rear side edge 316 of the top wall 31, and a plurality of middle fastening tabs 314 between the front fastening tab 311 and the rear fastening tab 313, wherein the front fastening tab 311 is welded at the splice seam 310, the rear fastening tab 313 is smaller in size than the middle fastening tab 314, the rear fastening tab 313 is provided with a front side edge 313a and a rear side edge 313b parallel to each other, and the length of the rear fastening tab 313 in the front-rear direction is smaller than the length of the middle fastening tab 314 in the front-rear direction, but is at least greater than half the length of the middle fastening tab 314. In contrast, the front side 314a and the back side 314b of the intermediate flap 314 are not parallel to each other. Because the rear fastening piece 313 is used as the blanking position of the die core, it not only affects the strength of the blanking die core (easy to collapse, high in loss and high in maintenance cost), but also affects the riveting strength of the metal shell 30 at the position, and the utility model strengthens the rear fastening piece 313 to make its size equal to or at least greater than half the length of the middle fastening piece 314, so as to enhance the strength of the blanking die core, improve the collapse condition and the riveting strength at the position, make the structure of the metal shell 30 more stable and reliable, and also reduce the maintenance cost. Preferably, the splice seam 310 extends rearwardly between the pair of catch arms 36.

Preferably, the gap (not shown) is formed between the inner surface 301 of the bottom wall 32 and the engagement region 111, and the gap (not shown) further extends laterally between the C-shaped side wall 33 and the engagement region 111, and the engagement region 111 is a flat surface, one end of which is connected to the V-shaped recess, and the other end of which abuts against the C-shaped side wall 33, so that the gap (not shown) is maintained between the engagement region 111 and the inner surface 301 of the metal housing 30, so that they do not contact each other and do not interfere with each other. Therefore, the coupling region 111 of the insulating body 10 is subjected to the glue reducing treatment by optimizing the matching mode of the insulating body 10 and the metal shell 30, so that the interference between the metal shell 30 and the insulating body 10 at the coupling region 111 is avoided, the problem that the insulating body 10 rotates due to the interference stress of the metal shell 30 in the assembling process is avoided, and the assembling precision and reliability of the metal shell and the insulating body are improved.

The metal cover 40 includes a U-shaped main body 41 and a pair of ears 42 integrally bent and extended from two ends of the main body 41, the main body 41 is crimped on the surfaces of the top wall 31 and the side wall 33 of the metal housing 30, and can be fixedly connected with the metal housing 30 by spot welding, and two ends of the main body 41 are further formed with a pair of fixing legs 43, the fixing legs 43 are located at the front sides of the ears 42 and are used for being clamped on a circuit board (not shown) to realize the fixed connection, and the fixing legs 43 extend downwards beyond the ears 42. The ears 42 extend horizontally.

In summary, the electric connector strengthens the rear buckling piece at the splicing seam by optimizing the structural design of the metal shell, thereby enhancing the strength of the blanking die core, improving the condition of tipping, reducing the maintenance cost, and further improving the bonding strength at the splicing seam, so that the structure of the metal shell is more reliable and stable.

The above description is only of the preferred embodiments of the present utility model, and is not intended to limit the utility model in any way, and any person skilled in the art may make many possible variations and modifications to the technical solution of the present utility model using the above disclosed method without departing from the scope of the technical solution of the present utility model, which is defined in the claims.

Claims

1. The utility model provides an electric connector, includes insulator, accommodates terminal module in insulator, assembles the metal casing on insulator, its characterized in that: the metal shell is provided with a top wall, a bottom wall and a pair of side walls, wherein a splicing seam and a plurality of buckling pieces distributed along the splicing seam in a staggered manner are formed on the top wall, the buckling pieces comprise a front buckling piece, a plurality of middle buckling pieces and a rear buckling piece, and the length of the rear buckling piece in the front-rear direction is greater than half of the length of the middle buckling piece.

2. The electrical connector of claim 1, wherein: the back buckling piece is provided with a front side and a back side which are parallel to each other, and the front side and the back side of the middle buckling piece are not parallel to each other.

3. The electrical connector of claim 2, wherein: the insulating body is provided with a base part and a butt tongue plate which integrally extends forwards from the base part, and the base part is provided with an upper surface, a lower surface and a pair of C-shaped side surfaces; the pair of side walls of the metal shell are C-shaped and are in interference fit with the C-shaped side surfaces.

4. The electrical connector of claim 3, wherein: the front buckling piece is arranged adjacent to the front side edge of the top wall, and the front buckling piece is welded at the splicing seam; the rear retention tab is disposed adjacent the rear side edge of the top wall.

5. The electrical connector of claim 4, wherein: an inserting cavity is formed among the top wall, the bottom wall and the side wall of the metal shell, the top wall and the bottom wall are respectively provided with a pair of spring arms and a pair of clamping arms, and the spring arms inwards protrude into the inserting cavity and are matched with the base; the splice seam extends rearwardly between the pair of retaining arms.

6. The electrical connector of claim 5, wherein: and a pair of engagement areas are arranged on the upper surface and the lower surface of the base, the engagement areas are adjacently connected with the C-shaped side surface, and a gap is formed between the engagement areas and the inner surface of the metal shell.

7. The electrical connector of claim 6, wherein: a pair of raised areas are arranged on the upper surface and the lower surface of the base, and the raised areas are positioned at the inner sides of the pair of connecting areas and are in a convex shape compared with the connecting areas.

8. The electrical connector of claim 7, wherein: the raised areas are in interference fit with the inner surfaces of the top and bottom walls; the engagement zone is a flat surface that leaves the gap with the inner surfaces of the top and bottom walls.

9. The electrical connector of claim 8, wherein: the two ends of the spring arm are integrally connected with the top wall; the clamping arm is formed at the rear side edge of the top wall, is bent downwards to be in limit fit with the base part, one end of the clamping arm is integrally connected with the top wall, and the other end of the clamping arm is a free tail end.