CN105914515A - Dual-purpose connector plug and assembling method thereof - Google Patents

Abstract

The invention discloses a dual-purpose connector plug and an assembling method thereof, wherein the dual-purpose connector plug comprises a metal shell, a Lightning interface terminal module and a Micro-USB interface terminal module; the top wall of the metal shell is provided with a first yielding hole, and a first terminal contact part of the Lightning interface terminal module is exposed out of the first yielding hole; the front end wall of the metal shell is provided with a plug-in port which is communicated with the interior of the accommodating cavity backwards to form a plug-in cavity, and a second terminal contact part of the Micro-USB interface terminal module is convexly exposed in the plug-in cavity; the second hole of stepping down has been seted up on metal casing's the diapire, the second is provided with the insulator in the hole of stepping down, thus, the diapire at metal casing forms the insulating region that another side contact terminal corresponds in with the Lightning socket, the problem of the metal casing of effectively having solved dual-purpose connector plug easily with the Lightning socket short circuit, avoid causing the harm to the electronic product that uses there is the Lightning socket, the performance of dual-purpose connector plug has been improved, and simultaneously, the steam generator is simple in structure, and is ingenious and reasonable in design, equipment convenient and fast, and is reliable and stable.

Description

Dual-purpose connector plug and assembly method thereof

technical field

The invention relates to the technology in the field of connectors, in particular to a dual-purpose connector plug suitable for a Lightning interface and a Micro-USB interface and an assembly method thereof.

Background technique

At present, the data interfaces of mobile electronic products such as mobile phones mainly include Micro-USB interface and Apple-specific Lightning interface, but these two interfaces cannot be used universally and need to be equipped with different connector plugs; in the prior art, some people have studied Double-sided dual-purpose connector, which combines Lightning interface terminals and Micro-USB interface terminals in the same connector plug, realizes the function of being directly compatible with Lightning data interface and Micro-USB data interface.

However, in actual use, when it is adapted to the Lightning interface, the metal shell is easily short-circuited with the Lightning socket, which affects the performance of the connection; The assembly is troublesome, which leads to problems such as high production cost and difficulty in further improving the product yield.

Therefore, a new technical solution needs to be developed to solve the above problems.

Contents of the invention

In view of this, the present invention aims at the deficiencies in the prior art, and its main purpose is to provide a dual-purpose connector plug and its assembly method, which effectively solves the problem that the metal shell of the dual-purpose connector plug in the traditional technology is easily connected with the Lightning socket. The problem of short-circuit improves the performance of the dual-purpose connector plug. At the same time, it has a simple structure, ingenious and reasonable design, convenient and fast assembly, and is stable and reliable.

To achieve the above object, the present invention adopts the following technical solutions:

A dual-purpose connector plug, including a metal shell, a Lightning interface terminal module and a Micro-USB interface terminal module;

The Lightning interface terminal module has a plurality of first terminals, and each first terminal has a first terminal contact portion; the Micro-USB interface terminal module has a plurality of second terminals, and each second terminal has a second terminal contact department;

The metal housing is formed with an accommodating cavity, the Lightning interface terminal module and the Micro-USB interface terminal module are arranged in the accommodating cavity; The terminal contact part is exposed at the first relief hole; the bottom wall of the metal casing is provided with a second relief hole penetrating the bottom wall, and the second relief hole is facing each first terminal contact part of the aforementioned Lightning interface terminal module The second relief hole is provided with an insulator, and the outer surface of the insulator exposed to the bottom wall of the metal shell is an insulating area; the front wall of the metal shell is provided with a plug-in port, and the plug-in port runs through the interior of the accommodating cavity backwards. An insertion cavity is formed, and the contact portion of the second terminal is exposed in the insertion cavity.

As a preferred solution, the insulator is injection molded on the metal casing.

As a preferred solution, in the Lightning interface terminal module, all first terminal contact portions form a top-side contact area on the top side of the metal housing, and the bottom side of the metal housing has a bottom-side contact area symmetrically arranged with the top-side contact area , the aforementioned insulating region at least completely covers the bottom-side contact region.

As a preferred solution, the inner side wall of the second relief hole is horizontally provided with a limiting plate portion, and the aforementioned insulator has an insulating panel portion and a convex portion integrally protruding from the top of the insulating panel portion; the insulating panel portion is positioned at the limiting plate portion Below the position plate part, the insulating panel closes the bottom end of the second relief hole; the top surface of the convex part is exposed on the top of the second relief hole.

As a preferred solution, the front wall of the metal casing is provided with a through hole as an injection inlet.

As a preferred solution, the left and right sides of the insulator are respectively integrally connected with positioning arms, and the positioning arms are extended forward and backward, and the positioning arms are respectively located at the left and right sides of the aforesaid accommodating cavity; the aforesaid through holes correspond to The positioning arms on the left and right sides are opened.

As a preferred solution, the front end of the positioning arm is connected with a cap matching the shape of the through hole, and the cap is located in the corresponding through hole.

As a preferred solution, it also includes a grounding elastic piece, the grounding elastic piece has a first contact portion, a connecting portion and an elastic arm integrally connected, the fixed end of the elastic arm is connected to the connecting portion, and the free end of the elastic arm is formed with a second contact department;

The above-mentioned top wall or/and bottom wall is provided with a third relief hole that passes through the accommodating cavity and the outside of the metal casing, and the above-mentioned metal casing is formed with a third contact portion for connecting and conducting with the first contact portion of the grounding shrapnel The above-mentioned grounding shrapnel is installed in the accommodating cavity, and its second contact part protrudes from the corresponding third relief hole, and its first contact part is connected and conducted with the third contact part of the metal shell.

As a preferred solution, a button hole is provided at the rear end of the metal shell, and the aforementioned third contact portion is the inner wall surface of the button hole; the first contact portion is a bent portion connected to the rear end of the connection portion, and the bent portion The part is stopped in the button hole, and the bent part is in contact with the inner wall of the button hole.

As a preferred solution, the Lightning interface terminal module has a first terminal port, and the aforementioned first terminal is arranged on the first terminal port; One is concavely provided with a limit buckle groove, and the other is correspondingly convexly provided with a limit buckle protrusion, which fits in the limit buckle groove to at least form the metal shell in the direction of the first terminal port. Downward and upward stop limit.

As a preferred solution, a first guide surface that is easy to snap in is formed in the limit buckle groove, and a second guide surface adapted to the first guide surface is formed on the limit buckle protrusion. face-to-face.

As a preferred solution, the socket is a closed socket, and the front wall of the metal shell is respectively reserved with an upper frame plate, a left frame plate, a lower frame plate and a right frame around the corresponding socket. board department.

As a preferred solution, one of the Lightning interface terminal module and the Micro-USB interface terminal module is provided with a buckle block, and the other is provided with a buckle slot, and the buckle block fits in the buckle slot .

A method for assembling the aforementioned dual-purpose connector plug, comprising the following steps

(1) Molding the insulator on the metal shell, the insulator is filled at least in the second relief hole, so as to form an insulating area corresponding to the contact terminal in the Lightning socket on the bottom wall of the metal shell;

(2) Assemble the Lightning interface terminal module into the metal casing, and the first terminal contact part of the Lightning interface terminal module is exposed in the first relief hole;

(3) Install the Micro-USB interface terminal module into the metal casing, and the second terminal contact part of the Micro-USB interface terminal module is exposed in the socket cavity.

As a preferred solution, in step (1), the insulator is injection molded on the metal casing.

As a preferred solution, the top wall or bottom wall of the metal shell is provided with a third relief through hole penetrating through the metal shell; it also includes a grounding elastic piece, which has a first contact part, a connecting part integrally connected and an elastic arm, the fixed end of the elastic arm is connected to the connecting portion, and the free end of the elastic arm is formed with a second contact portion;

After completing step (2), before proceeding to step (3), put the grounding shrapnel into the metal casing, the second contact part of the grounding shrapnel is exposed in the third relief hole, and the first contact part of the grounding shrapnel is in contact with the metal casing. The connection is on.

Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, it can be known from the above technical solutions:

Mainly, by forming an insulating area corresponding to the contact terminal on the other side of the Lightning socket on the bottom wall of the metal shell, it effectively solves the problem that the metal shell of the dual-purpose connector plug is easily shorted with the Lightning socket in the traditional technology, and avoids damage to the application. Electronic products with Lightning sockets cause damage and improve the performance of the dual-purpose connector plug. At the same time, it has the advantages of simple structure, ingenious and reasonable design, convenient and fast assembly, stable and reliable assembly, etc.;

Secondly, through the special structural design of the grounding shrapnel and the ingenious assembly and positioning of the grounding shrapnel and the metal shell, the grounding shrapnel and the metal shell are in contact with each other to achieve reliable grounding, which is conducive to ensuring stable signal transmission of the connector plug; the grounding shrapnel’s The second contact part on the elastic arm, in addition to being in contact with the inner wall of the metal shell of the Micro-USB socket to form shielding grounding, can also form elastic contact with the inner wall of the corresponding socket when it is adapted to the Micro-USB socket or Lightning socket , which effectively improves the insertion and extraction force between the plug and the socket, which is conducive to improving the stability of the plug-in connection between the plug and the socket; especially the grounding shrapnel has a simple structure, quick assembly, and takes up less design space, which is beneficial to the connector plug. The design layout of each component;

And, in the patent application of the present invention, the rear end face of the front wall of the metal shell and the front face of the first terminal port in the Lightning interface terminal module are snap-fitted to strengthen the assembly between the Lightning interface terminal module and the metal shell Stability, its mutual positioning is more precise, avoiding the loose phenomenon of the Lightning interface terminal module and the Micro-USB interface terminal module in the metal shell, especially, effectively preventing the Lightning interface terminal module from loosening downwards and causing The phenomenon of poor contact ensures the stable performance of the dual-purpose connector plug, and also improves the service life of the dual-purpose connector plug.

In order to more clearly illustrate the structural features and functions of the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Description of drawings

Fig. 1 is the perspective view of the assembly of the embodiment of the present invention;

Fig. 2 is another angle assembly perspective view of the embodiment of the present invention;

3 is a three-dimensional view of an exploded structure of an embodiment of the present invention;

Fig. 4 is the first cross-sectional structure diagram of the embodiment of the present invention;

Fig. 5 is a partial enlarged view of place A in Fig. 4;

Fig. 6 is a three-dimensional structure diagram of the Lightning interface terminal module in this embodiment;

Fig. 7 is a cross-sectional view of an insulator injection-molded on the metal casing in this embodiment;

Figure 8 is a perspective view of the metal shell in this embodiment

Fig. 9 is a three-dimensional structure diagram of an insulator in this embodiment

10 is a partial view of a second cross-sectional structure of an embodiment of the present invention;

Figure 11 is a diagram of the assembly structure when the metal casing is not shown in the embodiment of the present invention,

Fig. 12 is an exploded state diagram of the structure shown in Fig. 11;

Fig. 13 is a schematic diagram of the assembly steps of the embodiment of the present invention.

Explanation of the accompanying drawings:

1. Metal shell 2. Lightning interface terminal module

3. Micro-USB interface terminal module 4. Insulator

5. Ground shrapnel 6. The first terminal port

7. The first terminal 8. The second terminal port

9. Second terminal 10. Top wall

11. Bottom wall 12. Front wall

13. Left wall 14. Right wall

15. Accommodating cavity 16. First relief hole

17. Upper frame part 18. Left frame part

19. Lower frame plate part 20. Right frame plate part

21. The second relief hole 22. The limit plate part

23. Insulation panel part 24. Convex part

25. Positioning arm 26. Recess

27. Through hole 28. Cap

29. Socket 30. Connecting part

31. Elastic arm 32. The third relief hole

33. Shoulder 34. Buttonhole

35. Bending part 36. First buttonhole part

37. Second buttonhole part 38. Vertical part

39. Transverse part 40. First positioning groove

41. The second positioning groove 42. The third positioning groove

43. Avoidance recess 44. Limit buckle slot

45. Limit buckle protrusion 46. Boss

47. First guide surface 48. Second guide surface

49. Terminal limit table 50. Terminal groove

51. Limiting shoulder 52. Buckle block

53. Buckle hole 54. Plug cavity

55. Connecting part

detailed description

Please refer to Figures 1 to 13, which show the specific structure of the embodiment of the present invention, the dual-purpose connector plug includes a metal shell 1, a Lightning interface terminal module 2, and a Micro-USB interface terminal module 3 , insulator 4 and ground shrapnel 5.

In this embodiment, the Lightning interface terminal module 2 has a first terminal port 6 and a plurality of first terminals 7 formed in the first terminal port 6, and each first terminal 7 has a first terminal contact portion; Micro- The USB interface terminal module 3 has a second terminal port 8 and several second terminals 9 formed in the second terminal port 8, each second terminal 9 has a second terminal contact portion; as shown in Figure 3, the The Lightning interface terminal module 2 and the Micro-USB interface terminal module 3 are assembled and positioned with each other through the buckle block 52 and the buckle hole 53. The buckle block 52 and the buckle hole 53 are respectively formed on the first terminal port 6, The opposite mounting surface of the second terminal port 8; of course, the buckle block 52 and the buckle hole 53 can also be interchangeably arranged, that is, the buckle block 52 and the buckle hole 53 are respectively formed on the second terminal port 8 and the first terminal port. port 6 on the opposite mounting surface.

As shown in Fig. 7 and Fig. 8, the metal casing 1 has a plug-in portion 55, and the plug-in portion 55 has a top wall 10, a bottom wall 11, a front end wall 12, a left side wall 13, a right side wall 14 and a top wall. 10. The accommodating cavity 15 formed by the bottom wall 11, the front wall 12, the left side wall 13, and the right side wall 14, the aforementioned Lightning interface terminal module 2 and the Micro-USB interface terminal module 3 are installed in the accommodating cavity 15; as shown in Fig. 1 and Fig. 2, in the present embodiment, between its left side wall 13, right side wall 14 and top wall 10, respectively carry out the inverted slope design, its left side wall 13, right side wall 14 and The bottom walls 11 are designed with rounded corners; the top wall 10 is provided with a first relief hole 16 that passes through the accommodating cavity 15 and the outside of the top wall 10, and the first terminal contact portion of the aforementioned Lightning interface terminal module 2 is exposed. In the first relief hole 16; the aforementioned front end wall 12 is provided with an insertion port 29 for the tongue plate of the Micro-USB socket to extend into. The second terminal contact portion of the Micro-USB interface terminal module 3 is exposed in the socket cavity 54; as shown in Figures 1 to 3, the socket 29 in this embodiment is a closed socket, and the front wall 12 The upper frame plate portion 17, the left frame plate portion 18, the lower frame plate portion 19 and the right frame plate portion 20 are respectively reserved around the corresponding socket 29. The upper frame plate portion 17, the left frame plate portion 18, the lower frame plate portion The plate portion 19 and the right side frame plate portion 20 are sequentially connected; compared with the semi-enclosed socket in the conventional technology, the closed socket in this embodiment has better structural strength, which is conducive to improving the dual-purpose connector plug. service life.

As shown in Figure 2, Figure 3 and Figure 8, the bottom wall 11 of the insertion part 55 is provided with a second relief hole 21 that passes through the accommodating cavity 15 and the outside of the bottom wall 11, and the second relief hole 21 It is arranged facing the positions of the first terminal contact parts of the aforementioned Lightning interface terminal module 2; it can be understood that, in the Lightning interface terminal module 2, all the first terminal contact parts form a roof Side contact area, the bottom side of the metal shell 1 has a bottom side contact area symmetrically arranged with the top side contact area. In a conventional double-sided Lightning plug, the top side contact area and the bottom side contact area are composed of two sets of Lightning contact terminals. In this embodiment, it is equivalent to designing the bottom side contact area as an insulating structure, that is, an insulator 4 is arranged in the second relief hole 21, and it is preferably designed to shoot out the insulator 4 Formed on the metal shell 1, the outer surface of the insulator 4 exposed to the bottom wall 11 of the metal shell 1 is an insulating area, and the insulating area is used to at least completely cover the bottom side contact area. In this way, when the dual-purpose connector plug is adapted to the Lightning socket , the contact portion of the upper row of terminals in the Lightning socket is connected to the first terminal contact portion of the Lightning interface terminal module 2 in this embodiment, and the contact portion of the lower row of terminals in the Lightning socket is in contact with the insulating area, which effectively solves the problem of traditional technology. The problem that the metal shell of the dual-purpose connector plug is easily short-circuited with the Lightning socket avoids damage to electronic products such as Apple mobile phones, and improves the performance of the dual-purpose connector plug. As for the area of the aforementioned insulating region and the second relief hole 21, in the present embodiment, the area of the insulating region is consistent with the area of the second relief hole 21, therefore, the area of the second relief hole 21 is designed to be greater than or It is enough to be equal to the area of the top-side contact area. In fact, there is no need to limit the area of the second relief hole 21 here, and it is only necessary to define that the insulating area completely covers the aforementioned bottom-side contact area.

As shown in Fig. 2, Fig. 3, and Fig. 8 to Fig. 10, the inner side wall of the second relief hole 21 is horizontally provided with a limit plate portion 22, and it should be noted that the number of limit plate portions is one above (i.e. ≥ 1), and when the number of limit plate parts is more than two (i.e. ≥ 2), different limit plate parts can be located on the same horizontal plane, or on a level plane with different heights. The plate parts can be arranged at separate intervals, and the limiting plate parts can also be connected into one body. In theory, there is no restriction on the shape of a single limiting plate, and the limiting plate does not necessarily have to be designed as a horizontal plate structure. In this embodiment , mainly considering the structure of the metal shell 1 and its thickness, manufacturing process and other factors, the limiting plate part is preferably designed as a horizontal plate structure; therefore, for the specific design details of the aforementioned limiting plate part, in actual design applications, All can be flexibly changed as required, and there is no limitation in the application of the present invention. The main design spirit is to limit the position of the insulating panel part 23 described later, so as to facilitate the positioning of the entire insulator 4 in the second relief hole 21 . The aforesaid insulator 4 has an insulating panel part 23 and a convex part 24 integrally protruding from the top of the insulating panel part 23; The bottom end is to form the aforementioned insulating area exposed to the bottom wall 11 of the metal casing 1 in the second relief hole 21, and the bottom end surface of the insulating panel 23 is generally kept flush or slightly lower than the bottom wall 11; the convex portion 24 The top surface of the convex portion 24 is exposed on the top of the second relief hole 21, and the top surface of the convex portion 24 is lower than or flush with the top surface of the bottom wall 11. Here, it is considered that the top surface of the convex portion 24 should not protrude beyond the The accommodating cavity 15 is convenient for the setting of the insertion cavity 54 .

Referring to Figures 1 to 3, and Figures 9 to 12, in this embodiment, a through hole 27 is opened on the front wall 12 of the metal shell 1 as the injection inlet; specifically: the insulator 4 left, The right sides are integrally connected with positioning arms 25 respectively, and the positioning arms 25 are extended forward and backward. The left and right positions of the front end of the second terminal port 8 of the interface terminal module 3 are correspondingly formed with concave cavities 26 to give way to the aforementioned corresponding positioning arms 25; the aforementioned through holes 27 are respectively opened corresponding to the left and right positioning arms 25, so that The front end of the positioning arm 25 is formed with a cap portion 28 that matches the shape of the through hole 27. The through hole 27 has a structure that gradually decreases from front to back, and the inner surface of the through hole 27 is a limiting surface. Considering that it is convenient to enter the glue and prevent the insulator 4 from loosening and shifting backwards, in fact, the structure of the through hole 27 can also be other structures. A consistent straight-through structure is all that is needed. Therefore, there is no limitation on the structure of the through hole 27; of course, in this embodiment, the injection port is opened at the left and right positions of the front end wall 12 of the metal shell 1. , is a relatively perfect design obtained through research and analysis and multiple tests, which not only considers the structure of the metal shell 1 and the structural layout of the entire connector plug, but also considers that such a design will be more conducive to the formation, positioning and quality of the insulator 4 Therefore, after the insulator 4 is injection-molded on the metal shell 1, the bonding strength between the insulator 4 and the metal shell 1 is good, and it is difficult for the insulator 4 to shift, loose and other undesirable phenomena.

As shown in Fig. 3, Fig. 4, Fig. 8, Fig. 11 and Fig. 12, the grounding elastic piece 5 has a first contact portion, a connecting portion 30 and an elastic arm 31 integrally connected in sequence, and the fixed end of the elastic arm 31 is connected to the connection part 30, the free end of the elastic arm 31 is formed with a second contact part; the above-mentioned top wall 10 or/and bottom wall 11 is provided with a third relief hole 32 that passes through the accommodating cavity 15 and the outside, and the above-mentioned metal shell 1 also There is a shoulder 33 integrally connected to the rear end of the insertion part 55, and the entire metal shell 1 is integrally formed (for example: powder metallurgy); the shoulder 33 is formed with a guide for connecting with the first contact part of the grounding shrapnel 5. The third contact part through which the above-mentioned grounding shrapnel 5 is installed in the accommodating cavity 15 from back to front, and its second contact part protrudes from the corresponding third relief hole 32 under the action of the elastic arm 31, and its first contact The part is connected with the third contact part of the metal shell 1 and conducts; thereby, the structure of the grounding shrapnel 5 and its assembly and positioning relationship with the metal shell 1 cleverly realize the grounding, and the second spring on the elastic arm 31 of the grounding shrapnel 5 The contact part, in addition to being in contact with the inner wall of the metal shell of the Micro-USB socket to form shielded grounding, when it is adapted to the Micro-USB socket or Lightning socket, it can also form a longitudinal elastic contact with the inner wall of the corresponding socket, which effectively improves the plug. The plugging force between the socket and the socket; especially the structure of the grounding shrapnel 5 is simple, the assembly is quick, and the design space occupied is small. Respectively form a stable and reliable contact.

In this embodiment, the rear end of the shoulder portion 33 is provided with a button hole 34, the aforementioned third contact portion is the inner wall surface of the button hole 34; the first contact portion is a bent portion 35 connected to the rear end of the connecting portion, so The bent portion 35 is stopped in the button hole 34, and the bent portion 35 is in contact with the inner wall surface of the button hole 34; specifically, the button hole 34 here has a first button hole portion 36 and a second button hole part 37, the first buttonhole part 36 is recessed forward from the rear end face of the shoulder part 33, and the second buttonhole part 37 is further recessed forward from the upper part of the inner front end surface of the first buttonhole part 36; The folded portion 35 has a vertical portion 38 and a transverse portion 39, the vertical portion 38 is formed by bending upward from the rear end of the connecting portion 30, and the transverse portion 39 is formed by bending forward from the top of the vertical portion 38; and The top face of the bottom wall 11 is concavely provided with a first positioning groove 40 for positioning the connecting portion 30. The first positioning groove 40 communicates with the aforementioned button hole 34, specifically: it is the first positioning groove 40 The rear end communicates with the top of the first buttonhole portion 36; in this embodiment, a second positioning groove 41 is concavely provided upwards at the bottom of the second terminal port 8 of the Micro-USB interface terminal module 3, and is formed by the first The positioning groove 40 and the second positioning groove 41 are combined to accommodate the grounding shrapnel 5; the rear end surface of the second positioning groove 41 is used as the limiting surface of the rear end of the connecting part 30, and the rear end surface of the connecting part 30 is stopped at the second On the front side of the rear end of the positioning groove 41, a third positioning groove 42 is further recessed on the rear end surface of the second positioning groove 41. The third positioning groove 42 has an upper end opening, and the aforementioned vertical portion 38 The lower end can be located in the third positioning groove 42, and the aforementioned vertical portion 38 protrudes upwards from the upper opening of the third positioning groove 42. The setting of the third positioning groove 42 does not necessarily have to install the vertical portion 38 on the third positioning groove 42. In it, the third positioning groove 42 is more to play an assembly role for the vertical part 38. Of course, according to actual needs, it can also be designed as a limit function; The position of the button hole 34 is inserted forward, and after being inserted in place, the horizontal part 39 of the bent part 35 extends into the second button hole part 37, and the vertical part 38 of the bent part 35 is located in the first button hole part 36 , the entire elastic arm 31 extends downwards into the third relief hole 32. Here, the corresponding avoidance recess 43 formed on the second terminal port 8 (specifically, in the second positioning groove 41 The top surface is further recessed with an avoidance recess 43, and the avoidance recess 43 is preferentially designed in the front section of the top surface of the second positioning groove 41) for the deformation of the elastic arm 31 to give way; under normal circumstances, the grounding shrapnel 5 is installed After positioning, the horizontal part 39 and vertical part 38 of the bent part 35 form a good contact with the inner surface of the buckle hole 34 to realize the contact and conduction between the grounding shrapnel 5 and the metal shell 1 .

As shown in Fig. 1 to Fig. 7, the rear end face of the front end wall 12 of the metal shell 1 is concavely provided with a limit buckle groove 44, and the front end face of the first terminal port 6 in the aforementioned Lightning interface terminal module 2 is correspondingly forward. There is a limit buckle protrusion 45, which fits in the limit buckle groove 44; as a preferred design, a second hole for snapping is formed in the limit buckle groove 44. A guide surface 47, a second guide surface 48 corresponding to the first guide surface 47 is formed on the limit buckle protrusion 45, wherein the first guide surface 47, the second guide surface The guide surfaces 48 are inclined or curved surfaces; of course, in theory, the limit buckle convex part and the limit buckle groove can also be interchangeably designed on the rear end surface of the front end wall 12 of the metal shell 1 and the Lightning interface terminal module 2 respectively. The front end face of the first terminal port 6; generally, the first terminal port 6 has a base plate and a boss 46 protruding from the top end of the base plate, and the first terminal contact portion of the first terminal 7 in the Lightning interface terminal module 2 is exposed. On the top surface of the boss 46, the boss 46 fits into the first relief hole 16 of the metal casing 1, and the contact portion of the first terminal is kept flush with the corresponding surface of the metal casing 1; mainly refer to FIG. 4 to FIG. 6 Here, the front part of the bottom of the base plate protrudes downwards integrally with a terminal limiter 49, and the aforementioned limiter buckle protrusion 45 is integrally protruded forward from the front end of the terminal limiter 49, and the terminal limiter 49 The rear side of the terminal groove 50 is respectively formed for each second terminal, and each terminal groove 50 has a bottom end opening and a rear end opening, and the aforementioned second terminal 9 extends into the corresponding terminal groove 50, and the first terminal groove 50 of each second terminal 9 The two terminal contact parts protrude downward from the bottom opening of the corresponding terminal groove 50 to the insertion cavity 54; on the rear end face of the front end wall 12 .

Combined with the previous structural description of the dual-purpose connector plug and the diagram of the assembly steps shown in Figure 13, next, a general description of its assembly steps:

(1) The insulator 4 is formed on the metal shell 1 by injection molding, and the insulator 1 is at least filled in the second relief hole 21 to form a contact terminal on the bottom wall 11 of the metal shell 1 corresponding to the inner surface of the Lightning socket. insulation area;

(2) Install the Lightning interface terminal module 2 into the metal casing 1 from the back to the front, and the limit buckle protrusion 45 at the front end of the first terminal port 6 fits into the limit buckle groove 44 of the metal casing 1, The front end surface of the terminal limiting platform 49 is against the rear end surface of the front end wall 12 of the metal casing 1, and the first terminal contact portion of the Lightning interface terminal module 2 is exposed in the first relief hole 16;

(3) Load the grounding spring piece 5 forward from the rear end of the metal shell 1, the bent part 35 of the grounding spring piece 5 is stopped in the button hole 34, and the bent part 35 is in contact with the inner wall surface of the button hole 34 for conduction. Realize the connection and conduction between the fixed part of the grounding shrapnel 5 and the metal shell 1, and the elastic arm 31 of the grounding shrapnel 5 protrudes from the third relief hole 32 on the metal shell 1;

(4) Install the Micro-USB interface terminal module 3 into the metal casing 1 from the back to the front, and the Micro-USB interface terminal module 3 and the Lightning interface terminal module 2 are connected by a buckle block 52 and a buckle The holes 53 are assembled and positioned with each other. After being pushed forward into place, a "pop" sound will be heard. At this time, the Micro-USB interface terminal module 3 and the Lightning interface terminal module 2 are buckled together, and the Micro-USB interface terminal module 2 is fastened together. The front side of the limiting shoulder 51 of the interface terminal module 3 is limited to the rear end surface of the metal shell 1; thereby, the assembly of the entire connector is completed.

To sum up, the key point of the design of the present invention is that it mainly forms an insulating area corresponding to the contact terminal on the other side of the Lightning socket on the bottom wall of the metal shell, which effectively solves the problem of the metal shell of the dual-purpose connector plug in the traditional technology. Easy to short-circuit with the Lightning socket, avoiding damage to electronic products with Lightning sockets, and improving the performance of the dual-purpose connector plug. At the same time, it has a simple structure, ingenious and reasonable design, convenient and fast assembly, and stable and reliable assembly. and other advantages;

Secondly, through the special structural design of the grounding shrapnel and the ingenious assembly and positioning of the grounding shrapnel and the metal shell, the grounding shrapnel and the metal shell are in contact with each other to achieve reliable grounding, which is conducive to ensuring stable signal transmission of the connector plug; the grounding shrapnel’s The second contact part on the elastic arm, in addition to being in contact with the inner wall of the metal shell of the Micro-USB socket to form shielding grounding, can also form elastic contact with the inner wall of the corresponding socket when it is adapted to the Micro-USB socket or Lightning socket , which effectively improves the insertion and extraction force between the plug and the socket, which is conducive to improving the stability of the plug-in connection between the plug and the socket; especially the grounding shrapnel has a simple structure, quick assembly, and takes up less design space, which is beneficial to the connector plug. The design layout of each component;

And, in the patent application of the present invention, the rear end face of the front wall of the metal shell and the front face of the first terminal port in the Lightning interface terminal module are snap-fitted to strengthen the assembly between the Lightning interface terminal module and the metal shell Stability, its mutual positioning is more precise, avoiding the loose phenomenon of the Lightning interface terminal module and the Micro-USB interface terminal module in the metal shell, especially, effectively preventing the Lightning interface terminal module from loosening downwards and causing The phenomenon of poor contact ensures the stable performance of the dual-purpose connector plug, and also improves the service life of the dual-purpose connector plug.

The above descriptions are only preferred embodiments of the present invention, and do not limit the technical scope of the present invention in any way, so any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention are still valid. It belongs to the scope of the technical solutions of the present invention.

Claims (16)

1. A dual-purpose connector plug, characterized in that: it includes a metal shell, a Lightning interface terminal module and a Micro-USB interface terminal module; The Lightning interface terminal module has a plurality of first terminals, and each first terminal has a first terminal contact portion; the Micro-USB interface terminal module has a plurality of second terminals, and each second terminal has a second terminal contact department; The metal housing is formed with an accommodating cavity, the Lightning interface terminal module and the Micro-USB interface terminal module are arranged in the accommodating cavity; The terminal contact part is exposed at the first relief hole; the bottom wall of the metal casing is provided with a second relief hole penetrating the bottom wall, and the second relief hole is facing each first terminal contact part of the aforementioned Lightning interface terminal module The second relief hole is provided with an insulator, and the outer surface of the insulator exposed to the bottom wall of the metal shell is an insulating area; the front wall of the metal shell is provided with a plug-in port, and the plug-in port runs through the interior of the accommodating cavity backwards. An insertion cavity is formed, and the contact portion of the second terminal is exposed in the insertion cavity. 2. The dual-purpose connector plug according to claim 1, wherein the insulator is injection-molded on the metal shell. 3. The dual-purpose connector plug according to claim 1, characterized in that: in the Lightning interface terminal module, all first terminal contact parts form a top-side contact area on the top side of the metal shell, and the bottom side of the metal shell There is a bottom-side contact region arranged symmetrically with the top-side contact region, and the aforesaid insulating region at least completely covers the bottom-side contact region. 4. The dual-purpose connector plug according to claim 1, characterized in that: the inner side wall of the second relief hole is horizontally protruded with a limiting plate portion, and the aforementioned insulator has an insulating panel portion and is integrally protruded on the insulating panel. The convex part at the top of the part; the insulating panel part is located under the limit plate part, and the insulating panel closes the bottom end of the second relief hole; the top surface of the convex part is exposed on the top of the second relief hole. 5. The dual-purpose connector plug according to claim 1, characterized in that: the front wall of the metal shell is provided with a through hole as an injection inlet. 6. The dual-purpose connector plug according to claim 5, characterized in that: the left and right sides of the insulator are integrally connected with positioning arms, the positioning arms are extended forward and backward, and the positioning arms are respectively located in the aforesaid accommodating The left and right positions in the cavity; the aforementioned through holes correspond to the positioning arms on the left and right sides respectively. 7. The dual-purpose connector plug according to claim 6, characterized in that: the front end of the positioning arm is connected with a cap matching the shape of the through hole, and the cap is located in the corresponding through hole. 8. The dual-purpose connector plug according to claim 1, characterized in that: it also includes a grounding elastic piece, the grounding elastic piece has a first contact portion, a connecting portion and an elastic arm integrally connected, and the fixed end of the elastic arm is connected to a connecting portion, the free end of the elastic arm is formed with a second contact portion; The above-mentioned top wall or/and bottom wall is provided with a third relief hole that passes through the accommodating cavity and the outside of the metal casing, and the above-mentioned metal casing is formed with a third contact portion for connecting and conducting with the first contact portion of the grounding shrapnel The above-mentioned grounding shrapnel is installed in the accommodating cavity, and its second contact part protrudes from the corresponding third relief hole, and its first contact part is connected and conducted with the third contact part of the metal shell. 9. The dual-purpose connector plug according to claim 8, characterized in that: the rear end of the metal shell is provided with a button hole, the aforementioned third contact part is the inner wall surface of the button hole; the first contact part is a connection The bent part at the rear end of the connecting part is stopped in the button hole, and the bent part contacts and conducts with the inner wall of the button hole. 10. The dual-purpose connector plug according to claim 1, characterized in that: the Lightning interface terminal module has a first terminal port, the first terminal is arranged on the first terminal port; the front wall of the metal shell One of the rear end surface and the front surface of the first terminal port is concavely provided with a limit buckle groove, and the other is correspondingly convexly provided with a limit buckle convex portion, and the limit buckle convex portion is adapted to the limit buckle groove At least a downward stop of the metal shell to the first terminal port is formed. 11. The dual-purpose connector plug according to claim 10, characterized in that: a first guide surface for snap-in is formed in the limit buckle groove, and a correspondingly formed on the limit buckle protrusion There is a second guide surface adapted to the first guide surface. 12. The dual-purpose connector plug according to claim 1, characterized in that: the socket is a closed socket, and the front wall of the metal shell is respectively reserved with an upper frame plate, a left A side frame, a lower frame, and a right side frame. 13. The dual-purpose connector plug according to claim 1, characterized in that: one of the Lightning interface terminal module and the Micro-USB interface terminal module is provided with a buckle block, and the other is provided with a buckle slot, and the buckle block fits in the buckle slot. 14. A method for assembling a dual-purpose connector plug as claimed in claim 1, characterized in that: comprising the following steps (1) Molding the insulator on the metal shell, the insulator is filled at least in the second relief hole, so as to form an insulating area corresponding to the contact terminal in the Lightning socket on the bottom wall of the metal shell; (2) Assemble the Lightning interface terminal module into the metal casing, and the first terminal contact part of the Lightning interface terminal module is exposed in the first relief hole; (3) Install the Micro-USB interface terminal module into the metal casing, and the second terminal contact part of the Micro-USB interface terminal module is exposed in the socket cavity. 15. The method for assembling a dual-purpose connector plug according to claim 14, characterized in that: in step (1), the insulator is injection molded on the metal shell. 16. The method for assembling the dual-purpose connector plug according to claim 14, wherein: the top wall or the bottom wall of the metal shell is provided with a third relief hole penetrating through the metal shell; A shrapnel, the grounding shrapnel has a first contact portion, a connecting portion, and an elastic arm integrally connected, the fixed end of the elastic arm is connected to the connecting portion, and the free end of the elastic arm forms a second contact portion; After completing step (2), before proceeding to step (3), put the grounding shrapnel into the metal casing, the second contact part of the grounding shrapnel is exposed in the third relief hole, and the first contact part of the grounding shrapnel is in contact with the metal casing. The connection is on.