Mini-USB shell structure connector

Abstract

The utility model belongs to the technical field of electric connection devices, and provides a Mini-USB shell structure connector, which comprises an inner injection body, a shell and a net tail which are integrally formed, the inner injection body is positioned in the shell and the net tail, a matching male head of the inner injection body extends out of the shell, and a wire rod of the inner injection body extends out of the net tail; the shell comprises a plastic shell body, a positioning plate used for abutting against the plate end female seat is arranged at the end, away from the net tail, of the plastic shell body, the plastic shell body is further provided with a locking piece, the locking piece extends in the direction close to the positioning plate to form a suspended locking part, and the locking piece extends in the direction close to the net tail to form a suspended pressing part. And a locking hole matched with the plate end spring bolt is formed in the locking plate. According to the utility model, effective matching and insertion with the board end female seat can be realized, the matching firmness is good, and the matching and insertion male head is not easy to separate from the board end female seat after locking and does not shake back and forth, so that the stability of the matching and insertion structure is ensured, the connection between the matching and insertion male head and the board end female seat is stable and reliable, and the requirement of electrical performance transmission of Mini-USB is met.

Description

Technical Field

[0001] The utility model relates to the technical field of electric connection devices, in particular to a Mini-USB shell structure connector. Background Art

[0002] Mini-USB, also known as mini USB, is a USB interface standard. USB is the abbreviation of Universal Serial BUS in English, which means "universal serial bus" in Chinese. It is a technology developed for transmitting data between PC and digital devices. Standard USB, MiniUSB and MicroUSB have become the most common USB interfaces. Compared with standard USB, MiniUSB is smaller and suitable for small electronic devices such as mobile devices.

[0003] The current Mini-USB usually adopts a conventional internal and external injection structure. After the male and female ends are mated, there is no problem in the transmission of electrical performance, but it cannot be locked with the female socket on the customer's board, making the connection structure between the female and male ends unstable, which can easily cause the male end to fall out of the female end, resulting in poor connection stability of the Mini-USB. As the number of times the Mini-USB is plugged in and out increases, the connection is prone to loosening, which can more easily lead to poor contact or even fall out after mating. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the inventors conducted in-depth research and completed the present utility model after paying a lot of creative work.

[0005] Specifically, the technical problem to be solved by the utility model is to provide a Mini-USB shell structure connector to solve the technical problem that the current Mini-USB has poor connection stability, is prone to poor contact or even falls out after being plugged into the female socket on the customer's board.

[0006] In order to solve the above technical problems, the technical solution of the utility model is:

[0007] A Mini-USB shell structure connector, comprising an integrally formed inner body, an outer shell and a mesh tail, wherein the inner body is located inside the outer shell and the mesh tail, and the mating male plug of the inner body extends outside the outer shell, and the wire of the inner body extends outside the mesh tail;

[0008] The outer shell includes a plastic shell body, and a positioning plate for abutting against a board end female seat is provided at one end of the plastic shell body away from the net tail. The plastic shell body is also provided with a locking plate, and the locking plate extends in a direction close to the positioning plate to form a suspended locking portion, and the locking plate extends in a direction close to the net tail to form a suspended downward pressing portion, and the locking plate is provided with a locking hole for cooperating with the board end locking tongue.

[0009] As an improved technical solution, a first connecting portion is provided at the bottom of the locking piece, and the locking piece is connected to the plastic shell body through the first connecting portion;

[0010] A second connecting portion is also provided on both sides of the locking piece, one end of the second connecting portion is connected to the pressing portion, and the other end of the second connecting portion is connected to the inner side of the plastic shell body.

[0011] As an improved technical solution, the end of the locking portion is a gradually narrowing structure having a first guide surface, and the plastic shell body has a second guide surface corresponding to the first guide surface, and a lock tongue guide area is formed between the first guide surface and the second guide surface for guiding the lock tongue at the plate end.

[0012] As an improved technical solution, the plastic shell body is further provided with a protective edge, and the protective edge is located above the locking piece.

[0013] As an improved technical solution, the inner injection body includes a mating male connector, a wire and an inner injection molded part, the mating male connector and the wire are electrically connected, the inner injection molded part is wrapped around the outside of the soldering pads of the mating male connector and the wire, the plastic shell body has an insertion hole that is compatible with the inner injection molded part, and the inner injection body is plug-connected to the plastic shell body through the inner injection molded part and the insertion hole.

[0014] As an improved technical solution, the insertion hole of the plastic shell body has a positioning protrusion, and the inner injection molded part has a positioning groove matched with the positioning protrusion.

[0015] As an improved technical solution, locking grooves are respectively provided on both sides of one end of the plastic shell body close to the net tail, and the inner injection molded part is provided with an inner injection body locking tongue corresponding to the locking groove.

[0016] As an improved technical solution, a material passing trough hole is provided at the bottom of one end of the plastic shell body close to the net tail.

[0017] As an improved technical solution, the net tail includes a plastic shell connecting part and a wire protection part, the plastic shell connecting part is connected to the plastic shell body, and a accommodating space adapted to the inner injection molding part is defined between the plastic shell connecting part and the plastic shell body, and the wire protection part is covered on the outside of the wire.

[0018] As an improved technical solution, the wire protection portion is an I-shaped structure.

[0019] After adopting the above technical solution, the beneficial effects of the utility model are:

[0020] When preparing the Mini-USB shell structure connector, the wire and the matching male head are first welded, and then placed in a vertical injection molding machine to complete the injection molding of the inner injection body. At the same time, the injection molding of the outer shell is completed in a horizontal injection molding machine. After that, the inner injection body and the outer shell are inserted together to complete the assembly of the semi-finished product. Finally, the semi-finished product is placed in the net tail mold in the vertical injection molding machine, and the injection molding of the finished product is completed through the net tail mold. The preparation operation is simple and convenient.

[0021] Through the Mini-USB shell structure connector, effective mating with the board end female socket can be achieved. During mating, the mating male head is inserted into the board end female socket to achieve electrical connection. When the positioning plate of the shell abuts against the board end female socket, it indicates that the assembly is in place. At this time, the locking tongue of the board end female socket is inserted into the locking hole of the locking plate, thereby achieving a tight fitting connection between the shell and the board end female socket, and the fitting is firm. After locking, the mating male head is not easy to fall out of the board end female socket, and will not shake back and forth, thereby ensuring the stability of the mating structure, making the connection between the mating male head and the board end female socket stable and reliable, meeting the requirements of Mini-USB electrical performance transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0023] Figure 1 This is a three-dimensional structural diagram of the Mini-USB housing structure connector of the utility model;

[0024] Figure 2 Another three-dimensional structural diagram of the Mini-USB housing structure connector of the utility model;

[0025] Figure 3 This is a schematic diagram of the exploded structure of the Mini-USB shell structure connector of the utility model;

[0026] Figure 4 It is a schematic diagram of the three-dimensional structure of the inner injection body of the utility model;

[0027] Figure 5 Another three-dimensional structural schematic diagram of the inner injection body of the utility model;

[0028] Figure 6 It is a three-dimensional structural schematic diagram of the housing of the utility model;

[0029] Figure 7 Another three-dimensional structural schematic diagram of the housing of the utility model;

[0030] Figure 8 It is a schematic diagram of the cross-sectional structure of the housing of the utility model;

[0031] Fig. 9 Another cross-sectional structural schematic diagram of the housing of the utility model;

[0032] Fig.10 This is a schematic diagram of the three-dimensional structure of the net tail of the utility model;

[0033] Reference numerals: 1-inner injection molding; 11-male plug; 12-wire; 13-inner injection molding portion; 131-positioning slot; 132-inner injection molding lock tongue;

[0034] 2- Shell;

[0035] 21- plastic shell body; 211- second guide surface; 212- protection edge; 213- insertion hole; 214- positioning protrusion; 215- locking groove; 216- material trough hole;

[0036] 22- positioning plate;

[0037] 23-locking piece; 231-locking part; 2311-first guide surface; 232-pressing part; 233-locking hole; 234-first connecting part; 235-second connecting part;

[0038] 3-net tail; 31-plastic shell connection part; 32-wire protection part. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0041] At the same time, the meaning of "and / or" or "and / or" appearing in the full text includes three options. Taking "A and / or B" as an example, it includes option A, or option B, or a option in which both A and B are satisfied.

[0042] In addition, in the present utility model, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0043] like Figures 1 to 10 As shown together, this embodiment provides a Mini-USB shell structure connector, including an integrally formed inner body 1, an outer shell 2 and a net tail 3, the inner body 1 is located inside the outer shell 2 and the net tail 3, and the mating male connector 11 of the inner body 1 extends to the outside of the outer shell 2, and the wire 12 of the inner body 1 extends to the outside of the net tail 3.

[0044] like Figures 1 to 3 , Figures 6 to 9 As shown together, the outer shell 2 includes a plastic shell body 21. The end of the plastic shell body 21 away from the net tail 3 is provided with a positioning plate 22 for abutting against the board end female seat. When mated with the board end female seat, the positioning plate 22 contacts the board end female seat, indicating that the front end is assembled in place. The plastic shell body 21 is also provided with a locking plate 23. The locking plate 23 extends in a direction close to the positioning plate 22 to form a suspended locking portion 231. The locking plate 23 extends in a direction close to the net tail 3 to form a suspended pressing portion 232, and the locking plate 23 is provided with a locking hole 233 for cooperating with the board end locking tongue. The locking plate 23 is a guarantee that it is not easy to fall out after mating with the board end female seat. When mating with the board-end socket, the positioning plate 22 contacts the board-end socket, and the board-end locking tongue is inserted into the locking hole 233, so that the connector and the board-end socket can be mated. When the connector needs to be pulled out of the board-end socket, the pressing part 232 is pressed down and force is applied outward at the same time, so that the connector can be pulled out of the board-end socket. The operation is simple and convenient.

[0045] The Mini-USB shell structure connector according to the present embodiment can achieve effective mating with the board-end female socket. During mating, the mating male plug 11 is inserted into the board-end female socket to achieve electrical connection. When the positioning plate 22 of the shell 2 abuts against the board-end female socket, it indicates that the assembly is in place. At this time, the locking tongue of the board-end female socket is inserted into the locking hole 233 of the locking piece 23, thereby achieving a tight fitting connection between the shell 2 and the board-end female socket with good firmness. After locking, the mating male plug 11 is not easy to fall out of the board-end female socket and will not shake back and forth, thereby ensuring the stability of the mating structure, so that the connection between the mating male plug 11 and the board-end female socket is stable and reliable, meeting the electrical performance transmission requirements of the Mini-USB, and is easy to process and manufacture, convenient for actual use by the client, and highly practical.

[0046] In one embodiment of the present invention, Figures 1 to 3 , Figures 6 to 9 As shown together, a first connecting portion 234 is provided at the bottom of the locking piece 23, and the locking piece 23 is connected to the plastic shell body 21 through the first connecting portion 234; the portion located on one side of the first connecting portion 234 and close to the positioning plate 22 is the locking portion 231 of the locking piece 23, and the portion located on the other side of the first connecting portion 234 and close to the net tail 3 is the pressing portion 232 of the locking piece 23; second connecting portions 235 are also provided on both sides of the locking piece 23, one end of the second connecting portion 235 is connected to the pressing portion 232, and the other end of the second connecting portion 235 is connected to the inner side of the plastic shell body 21. The connection structure between the locking piece 23 and the plastic shell body 21 makes the locking piece 23 have good fatigue resistance and a long service life. Pressing down the pressing portion 232 can make the locking portion 231 tilt upward, so that the locking piece 23 and the board end lock tongue are separated, thereby releasing the locking state with the board end female socket, making it easy to pull out the Mini-USB shell structure connector from the board end female socket and release the mating.

[0047] In one embodiment of the present invention, Figures 1 to 3 , Figures 6 to 9 As shown together, the end of the locking portion 231 is a gradually narrowing structure with a first guide surface 2311, and the plastic shell body 21 has a second guide surface 211 corresponding to the first guide surface 2311, and a lock tongue guide area for guiding the board end lock tongue is formed between the first guide surface 2311 and the second guide surface 211. The first guide surface 2311 and the second guide surface 211 play a guiding role for the board end lock tongue during the mating process, and the board end lock tongue can be accurately inserted into the locking hole 233 through the lock tongue guide area, so that the housing 2 and the board end female seat are closely matched, and it is not easy to fall out after locking, thereby ensuring the stability of the mating structure.

[0048] It is understandable that the end of the locking portion 231 may not be provided with a guide surface structure, and only a second guide surface 211 is opened on the plastic shell body 21. The second guide surface 211 opened on the plastic shell body 21 is used to guide the plate end lock tongue, so that the plate end lock tongue can be accurately inserted into the locking hole 233 through the second guide surface 211.

[0049] In one embodiment of the present invention, Figures 1 to 3 , Figures 6 to 9 As shown together, the plastic shell body 21 is further provided with a protective edge 212, which is located above the locking piece 23. The protective edge 212 is used to protect the locking piece 23, which can prevent the locking piece 23 from being broken due to excessive pulling of the locking piece 23, and can also prevent the locking piece 23 from being torn and disconnected due to hooking with other structures.

[0050] It can be understood that the housing 2 can be manufactured by a horizontal injection molding machine, and the injection molding of the housing 2 is achieved by injecting the injection molding material into the housing mold of the horizontal injection molding machine.

[0051] In one embodiment of the present invention, Figures 1 to 5 As shown together, the inner injection body 1 includes a mating male connector 11, a wire 12 and an inner injection molded portion 13. The mating male connector 11 and the wire 12 are electrically connected. The inner injection molded portion 13 is wrapped around the outside of the soldering pads of the mating male connector 11 and the wire 12. The plastic shell body 21 has an insertion hole 213 that is compatible with the inner injection molded portion 13. The inner injection body 1 is plug-connected to the plastic shell body 21 through the inner injection molded portion 13 and the insertion hole 213. When the inner injection body 1 is processed and manufactured, the mating male connector 11 and the wire 12 are first welded, and then the welded mating male connector 11 and the wire 12 are placed in a vertical injection molding machine, and the injection molding of the inner injection body 1 is completed through the inner injection mold. After the injection molding of the inner injection body 1, the inner injection molding part 13 is wrapped around the outside of the welding position of the mating male connector 11 and the wire 12 to protect the pads at the welding position of the mating male connector 11 and the wire 12. In addition, the inner injection molding part 13 is compatible with the insertion hole 213 of the plastic shell body 21, which is convenient for the assembly between the inner injection body 1 and the outer shell 2, so that the assembly of the inner injection body 1 and the outer shell 2 is firm and stable.

[0052] In one embodiment of the present invention, Figures 1 to 9 As shown together, the insertion hole 213 of the plastic shell body 21 has a positioning protrusion 214, and the inner injection molded part 13 has a positioning groove 131 that matches the positioning protrusion 214. The positioning protrusion 214 of the plastic shell body 21 and the positioning groove 131 of the inner injection molded part 13 can ensure that the inner injection body 1 and the outer shell 2 are accurately assembled together when they are assembled and connected. In addition, the positioning groove 131 of the inner injection molded part 13 can play a role in foolproof operation, avoiding the inner injection body 1 from being installed upside down, and providing convenience for the rapid and accurate assembly of the inner injection body 1 and the outer shell 2.

[0053] In one embodiment of the present invention, Figures 1 to 9As shown in common, locking grooves 215 are respectively provided on both sides of one end of the plastic shell body 21 close to the net tail 3, and the inner injection molding part 13 is provided with an inner injection body locking tongue 132 corresponding to the locking groove 215; with the locking groove 215 and the inner injection body locking tongue 132, when the inner injection body 1 and the outer shell 2 are assembled, the inner injection body locking tongue 132 will be respectively inserted into the locking groove 215, so as to realize the initial assembly of the inner injection body 1 and the outer shell 2, and ensure that the inner injection body 1 and the outer shell 2 are firmly assembled together with good connection stability. After the inner injection body 1 and the outer shell 2 are assembled into a semi-finished product, it is convenient to put the semi-finished product into the vertical injection molding machine for the next step of the net tail 3 injection molding process. Through the locking groove 215 and the inner injection body locking tongue 132 structure, the consistency of the size of the inner injection body 1 and the outer shell 2 is ensured, and the impact force of the injection plastic during the injection molding of the net tail 3 is prevented from causing the change of the assembly state of the inner injection body 1 and the outer shell 2, thereby effectively ensuring the injection molding quality of the finished product.

[0054] In one embodiment of the present invention, Figures 1 to 9 As shown together, a feeding slot 216 is provided at the bottom of one end of the plastic shell body 21 close to the net tail 3; after the inner injection body 1 and the outer shell 2 are assembled on the semi-finished product, the semi-finished product is placed in a vertical injection molding machine for injection molding of the net tail 3, so that the injection plastic can enter through the feeding slot 216 to combine and fix the inner injection body 1, the outer shell 2 and the newly injected net tail 3 into an integrated structure.

[0055] In one embodiment of the present invention, Figures 1 to 3 , Fig.10 As shown together, the net tail 3 includes a plastic shell connection part 31 and a wire protection part 32, the plastic shell connection part 31 is connected to the plastic shell body 21, and a receiving space adapted to the inner injection part 13 is defined between the plastic shell connection part 31 and the plastic shell body 21, and the wire protection part 32 is coated on the outside of the wire 12. The net tail 3 structure is provided to ensure that the force distribution of the wire 12 at the tail end of the injection molded body is more uniform when bending, thereby improving the service life of the product, and the injection molding of the net tail 3 structure is also the key to the integration of the three structures of the inner injection body 1 and the outer shell 2. The net tail 3 is the part where the tail of the plug connects with the wire 12, which can ensure better swing performance when the wire 12 is frequently plugged in and out of the plug, that is, it is not easy to break the rubber of the net tail when the wire 12 is frequently bent. After adding the net tail 3, although the magnitude of the force on the wire 12 remains unchanged, the area of ​​the force becomes larger, and the bending arc will also become larger, so the rubber of the outer layer of the wire 12 is not easy to fatigue and finally become thin and break.

[0056] In one embodiment of the present invention, Figures 1 to 3 , Fig.10 As shown together, the wire protection portion 32 is an I-shaped structure, and the wire protection portion 32 with the I-shaped structure has better anti-bending performance.

[0057] The Mini-USB shell structure connector can realize the functional matching of the connector. During preparation, the wire 12 is first welded to the matching male head 11, and then placed in a vertical injection molding machine to complete the injection molding of the inner injection body 1. At the same time, the injection molding of the outer shell 2 is completed in a horizontal injection molding machine. After that, the inner injection body 1 and the outer shell 2 are inserted together to complete the assembly of the semi-finished product. Finally, the semi-finished product is placed in the net tail mold in the vertical injection molding machine, and the injection molding of the finished product is completed through the net tail mold. The preparation operation is simple and convenient.

[0058] It should be understood that the purpose of these embodiments is only to illustrate the utility model and is not intended to limit the protection scope of the utility model. In addition, it should also be understood that after reading the technical content of the utility model, those skilled in the art can make various changes, modifications and / or variations to the utility model, and all of these equivalent forms also fall within the protection scope defined by the claims attached to this application.

Claims

1. A Mini-USB housing structure connector, characterized in that: It comprises an integrally formed inner injection body, an outer shell and a net tail, wherein the inner injection body is located inside the outer shell and the net tail, and the mating male plug of the inner injection body extends outside the outer shell, and the wire of the inner injection body extends outside the net tail; The outer shell includes a plastic shell body, and a positioning plate for abutting against a board end female seat is provided at one end of the plastic shell body away from the net tail. The plastic shell body is also provided with a locking plate, and the locking plate extends in a direction close to the positioning plate to form a suspended locking portion, and the locking plate extends in a direction close to the net tail to form a suspended downward pressing portion, and the locking plate is provided with a locking hole for cooperating with the board end locking tongue.

2. The Mini-USB housing structure connector according to claim 1, characterized in that: A first connecting portion is provided at the bottom of the locking piece, and the locking piece is connected to the plastic shell body through the first connecting portion; A second connecting portion is also provided on both sides of the locking piece, one end of the second connecting portion is connected to the pressing portion, and the other end of the second connecting portion is connected to the inner side of the plastic shell body.

3. The Mini-USB housing structure connector according to claim 1, characterized in that: The end of the locking portion is a gradually narrowing structure having a first guide surface, and the plastic shell body has a second guide surface corresponding to the first guide surface, and a lock tongue guide area for guiding the lock tongue at the plate end is formed between the first guide surface and the second guide surface.

4. The Mini-USB housing structure connector according to claim 1, characterized in that: The plastic shell body is also provided with a protective edge, and the protective edge is located above the locking piece.

5. The Mini-USB housing structure connector according to any one of claims 1 to 4, characterized in that: The inner injection body includes a mating male connector, a wire and an inner injection molded part. The mating male connector and the wire are electrically connected. The inner injection molded part is wrapped around the soldering pads of the mating male connector and the wire. The plastic shell body has an insertion hole that is compatible with the inner injection molded part. The inner injection body is plug-connected to the plastic shell body through the inner injection molded part and the insertion hole.

6. The Mini-USB housing structure connector according to claim 5, characterized in that: The inserting hole of the plastic shell body is provided with a positioning protrusion, and the inner injection molding part is provided with a positioning groove matched with the positioning protrusion.

7. The Mini-USB housing structure connector according to claim 5, characterized in that: The plastic shell body is provided with locking grooves on both sides of one end close to the net tail, and the inner injection molding part is provided with an inner injection body locking tongue corresponding to the locking groove.

8. The Mini-USB housing structure connector according to claim 5, characterized in that: A material passing trough hole is provided at the bottom of one end of the plastic shell body close to the net tail.

9. The Mini-USB housing structure connector according to claim 5, characterized in that: The net tail includes a plastic shell connecting part and a wire protection part, the plastic shell connecting part is connected to the plastic shell body, and a accommodating space adapted to the inner injection molding part is defined between the plastic shell connecting part and the plastic shell body, and the wire protection part is coated on the outside of the wire.

10. The Mini-USB housing structure connector according to claim 5, characterized in that: The wire protection part is an I-shaped structure.

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