Connector with stable structure and terminal welding pins not exposed with copper and not easy to rust

Abstract

The utility model discloses a connector with a stable structure and terminal weld legs not exposed with copper and not easy to rust, and relates to the technical field of electronic accessories, the scheme comprises an outer shell, an inner shell, a rear plug and a plurality of terminals, the inner shell is fixedly clamped at the inner side of the outer shell, the rear plug is fixedly clamped at the inner side of the inner shell, the front part of each terminal is provided with a first abutting part, and the first abutting part is provided with a second abutting part. A first abutting portion is arranged on the front side of the inner shell, a second abutting portion is arranged on the lower portion of the terminal, the terminal is located on the inner side of the inner shell, the front end of the terminal penetrates through the front side of the inner shell, the first abutting portion abuts against the inner shell, the lower end of the terminal penetrates through the rear plug, the second abutting portion abuts against the rear plug, a first material breaking portion is arranged on the side, away from the front end of the terminal, of the first abutting portion, and a rivet is arranged on the outer shell in a penetrating mode. According to the utility model, copper is not exposed at the lower end of the terminal, the terminal is not easy to oxidize and rust after being welded with the PCB, the influence on signal transmission is reduced to a certain extent, and the tensile capacity of the shell is obviously improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic accessories, in particular to a connector with a stable structure and terminal welding feet that do not expose copper and are not prone to rust. Background Art

[0002] The material of the connector terminal is generally copper, and the surface is generally electroplated with a layer of electroplating to prevent copper oxidation. Before assembly, the terminal is fixed together with the material strip, so the material strip will be electroplated together with the terminal; after the terminal is assembled, the material strip needs to be broken and recycled. The terminal of the traditional connector is generally provided with a cut-off part at its lower end, and the material strip is set at the cut-off part at the lower end of the terminal. When the material strip is broken, the cut-off part at the lower end of the terminal will expose copper, and the terminal is generally welded to the PCB board after passing the lower end through the PCB board. After the copper at the lower end of the terminal is exposed, the tinning effect is not good during welding, and the exposed copper is easily oxidized and rusted, thereby affecting the transmission of the signal; on the other hand, Chinese utility model CN207490185U discloses an intelligent connector. The grounding terminal of this solution is fork-shaped and is provided with multiple groups of notches. In actual use, the connector is required to have strong tensile strength. The above-mentioned grounding terminal is connected with other structures by setting different notches. The tensile strength between the shell and other structures is obviously not strong enough. In this background, the applicant is committed to developing a connector with a stable structure and terminal soldering feet that do not expose copper and are not easy to rust. The connector can achieve the goal of not exposing copper at the lower end of the terminal, and is not easily oxidized and rusted after being welded to the PCB board, which reduces the impact on signal transmission to a certain extent and significantly improves the tensile strength of the shell. Utility Model Content

[0003] The utility model aims to achieve that the copper at the lower end of the terminal is not exposed, and it is not easy to be oxidized and rusted after being welded with the PCB board, which reduces the influence on signal transmission to a certain extent and significantly improves the tensile strength of the shell.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] A connector with a stable structure and terminal welding feet that do not expose copper and are not prone to rust, comprises an outer shell, an inner shell, a rear plug and a plurality of terminals, the inner shell is fixedly arranged on the inner side of the outer shell, the rear plug is fixedly arranged on the inner side of the inner shell, a first abutment is arranged at the front of the terminal, a second abutment is arranged at the lower part of the terminal, the terminal is located on the inner side of the inner shell, the front end of the terminal passes through the front side of the inner shell, and the first abutment abuts against the inner shell, the lower end of the terminal passes through the rear plug, and the second abutment abuts against the rear plug, a first material breaking portion is arranged on the side of the first abutment away from the front end of the terminal, and a rivet is pierced through the outer shell.

[0006] Furthermore, a second cutting portion is provided at the front end of the terminal.

[0007] Furthermore, slide grooves are transversely opened on the left and right outer sides of the inner shell, and blocks are fixedly arranged in the slide grooves. Slide bars and hook blocks are fixedly arranged on the left and right inner walls of the outer shell, and the slide bars are located in the slide grooves, and the hook blocks are hooked on the block blocks.

[0008] Furthermore, a card slot is provided at the lower end of the inner shell, and card blocks are fixedly provided on both sides of the rear plug, and the card blocks are clamped in the card slot. A first hook bar is fixedly provided on the lower part of the left and right inner walls of the inner shell, and a second hook bar is fixedly provided on the left and right outer sides of the rear plug, and the first hook bar and the second hook bar are interlocked.

[0009] Furthermore, a first conical groove is provided on the inner shell, the front part of the terminal passes through the first conical groove, and the first abutment abuts in the first conical groove, and a second conical groove is provided on the rear plug, the lower part of the terminal passes through the second conical groove, and the second abutment abuts in the second conical groove.

[0010] Furthermore, an external plug-in interface is fixedly provided at the front end of the shell, and hooks are fixedly provided on both sides of the external plug-in interface.

[0011] Furthermore, an inner plug-in interface is fixedly provided at the front end of the inner shell, the inner plug-in interface is located inside the outer plug-in interface, an inserting groove is provided on the inner wall of the inner plug-in interface, and the front end of the terminal is against the inserting groove.

[0012] Furthermore, a contact portion is bent at the front of the terminal.

[0013] The beneficial effects of the utility model are as follows: the utility model provides a first cutting portion on the side of the first abutting portion away from the front end of the terminal, the cut material is connected to the terminal at the first cutting portion, and is electroplated together with the terminal. After the terminal is assembled, the cut material is disconnected at the first cutting portion and recycled, so that the exposed copper part is at the first abutting portion, and the lower end of the terminal is wrapped by the electroplating layer without copper exposure. When the lower end of the terminal is welded to the PCB board, the tin-plated layer is easier to tin and weld, and there is no need to worry about oxidation and rust due to the exposed copper of the soldering foot, thereby reducing the impact on signal transmission to a certain extent; on the other hand, the utility model rivets are inserted through the shell and riveted to the grounding structure through the rivets. Compared with the traditional technology that relies on multiple groups of notches on the grounding terminal for connection, the utility model significantly improves the tensile strength of the shell by using rivets. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is one of the overall structural schematic diagrams of the utility model;

[0015] Figure 2 This is the second schematic diagram of the overall structure of the utility model;

[0016] Figure 3It is an exploded view of the overall structure of the utility model;

[0017] Figure 4 It is a structural schematic diagram of the inner shell, rear plug and terminal of the utility model;

[0018] Figure 5 yes Figure 4 A magnified image of point A;

[0019] Figure 6 It is a structural schematic diagram of the shell of the utility model;

[0020] Figure 7 This is one of the structural schematic diagrams of the inner shell of the utility model;

[0021] Figure 8 This is the second structural schematic diagram of the inner shell of the utility model;

[0022] Fig. 9 It is a structural schematic diagram of the rear plug of the utility model;

[0023] Fig.10 It is a structural schematic diagram of the terminal of the utility model;

[0024] The accompanying drawings are marked as follows:

[0025] Shell 1, slide bar 11, hook block 12, rivet 13, external plug-in interface 14, hook 15,

[0026] Inner shell 2, slide groove 21, stopper 211, card groove 22, first hook strip 23, first tapered groove 24, inner plug interface 25, plug-in groove 251,

[0027] Rear plug 3, block 31, second hook strip 32, second tapered groove 33,

[0028] The terminal 4 has a first abutting portion 41 , a first breaking portion 411 , a second abutting portion 42 , and a second breaking portion 43 . DETAILED DESCRIPTION

[0029] The utility model is further described below with reference to the accompanying drawings. It should be noted that the directional words such as front, back, left, and right described in the present application document are all in the form of Figure 1 The orientation shown in the figure shall prevail.

[0030] like Figures 1 to 10 The connector shown has a stable structure and its terminal soldering feet are not exposed copper and are not prone to rust. It includes an outer shell 1, an inner shell 2, a rear plug 3 and a plurality of terminals 4.

[0031] The inner shell 2 is fixedly arranged on the inner side of the outer shell 1, and the specific structure is as follows: a slide groove 21 is horizontally opened on the left and right outer sides of the inner shell 2, and a stopper 211 is fixedly arranged in the slide groove 21. A slide bar 11 and a hook block 12 are fixedly arranged on the left and right inner walls of the outer shell 1. The slide bar 11 is located in the slide groove 21, and the hook block 12 is hooked on the stopper 211. The slide bar 11 and the slide groove 21 cooperate with each other to prevent the inner shell 2 from vertically falling off the outer shell 1. The hook block 12 is hooked on the stopper 211 to prevent the inner shell 2 from sliding horizontally, so that the inner shell 2 is more stably arranged on the inner side of the outer shell 1.

[0032] The rear plug 3 is fixedly arranged on the inner side of the inner shell 2, and the specific structure is as follows: a slot 22 is opened at the lower end of the inner shell 2, and blocks 31 are fixedly arranged on both sides of the rear plug 3, and the blocks 31 are arranged in the slot 22. A first hook strip 23 is fixedly arranged on the lower part of the left and right inner walls of the inner shell 2, and a second hook strip 32 is fixedly arranged on the left and right outer sides of the rear plug 3, and the first hook strip 23 and the second hook strip 32 are buckled with each other.

[0033] A first abutment 41 is provided at the front of the terminal 4, and a second abutment 42 is provided at the lower part of the terminal 4. The terminal 4 is located on the inner side of the inner shell 2, and the front end of the terminal 4 passes through the front side of the inner shell 2, and the first abutment 41 abuts against the inner shell 2, and the lower end of the terminal 4 passes through the rear plug 3, and the second abutment 42 abuts against the rear plug 3; a more specific structure is: a first conical groove 24 is provided on the inner shell 2, the front part of the terminal 4 passes through the first conical groove 24, and the first abutment 41 abuts against the first conical groove 24, a second conical groove 33 is provided on the rear plug 3, the lower part of the terminal 4 passes through the second conical groove 33, and the second abutment 42 abuts against the second conical groove 33.

[0034] A first cutting portion 411 is provided on the side of the first abutment 41 away from the front end of the terminal 4. The cut material is connected to the terminal 4 at the first cutting portion 411 and is electroplated together with the terminal 4. After the terminal 4 is assembled, the cut material is disconnected at the first cutting portion 411 and recycled, so that the exposed copper part is at the first abutment 41, and the lower end of the terminal 4 is wrapped by the electroplating layer without copper exposure. When the lower end of the terminal 4 is welded to the PCB board, the tin-plated layer is easier to tin and weld, and there is no need to worry about oxidation and rusting due to the exposed copper of the solder joint, thereby reducing the impact on signal transmission to a certain extent.

[0035] The front end of the terminal 4 is provided with a second cutting portion 43 , and the cut material is connected to the terminal 4 at the second cutting portion 43 . Before assembling the terminal 4 , the cut material is disconnected from the second cutting portion 43 and recovered, so as to facilitate the front end of the terminal 4 to pass through the front side of the inner shell 2 .

[0036] The housing 1 is provided with rivets 13, which are riveted to the grounding structure. Compared with the conventional connection method relying on multiple groups of notches on the grounding terminal 4, the present invention uses rivets 13 to significantly improve the tensile strength of the housing 1.

[0037] An external plug-in interface 14 is fixedly provided at the front end of the outer shell 1, and hooks 15 are fixedly provided on both sides of the external plug-in interface 14. An internal plug-in interface 25 is fixedly provided at the front end of the inner shell 2. The internal plug-in interface 25 is located inside the external plug-in interface 14. A plug-in groove 251 is provided on the inner wall of the internal plug-in interface 25. The front end of the terminal 4 is against the plug-in groove 251. A contact portion is bent at the front of the terminal 4, and the contact portion is located inside the internal plug-in interface 25.

[0038] The working principle of the utility model is as follows: two groups of material strips are respectively integrally formed on the first breaking portion 411 and the second breaking portion 43 on the terminal 4. The terminal 4 is connected to the two groups of material strips for electroplating together. During assembly, the two groups of material strips are also broken off and recycled from the first breaking portion 411 and the second breaking portion 43 as needed, so that the exposed copper part is at the first abutment 41 and the second breaking portion 43 at the front end of the terminal 4, while the lower end of the terminal 4 is wrapped by the electroplating layer and copper is not exposed. When the lower end of the terminal 4 is welded to the PCB board, the tinned layer is easier to tin and weld, and there is no need to worry about oxidation and rusting due to the exposed copper of the soldering foot, thereby reducing the impact on signal transmission to a certain extent.

[0039] By piercing the rivet 13 on the housing 1 and riveting the rivet 13 to the grounding structure, the tensile strength of the housing 1 is significantly improved.

[0040] The above disclosure is only a preferred embodiment of the present invention, which cannot be used to limit the scope of protection of the present invention. Therefore, equivalent changes made within the scope of the patent application of the present invention still fall within the scope covered by the present invention. The above does not impose any limitation on the technical scope of the present invention. Any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A connector with a stable structure and terminal soldering feet that do not expose copper and are not prone to rust, characterized in that: It includes an outer shell, an inner shell, a back plug and a plurality of terminals, the inner shell is fixedly arranged on the inner side of the outer shell, the back plug is fixedly arranged on the inner side of the inner shell, a first abutment is arranged at the front of the terminal, a second abutment is arranged at the lower part of the terminal, the terminal is located on the inner side of the inner shell, the front end of the terminal passes through the front side of the inner shell, and the first abutment abuts against the inner shell, the lower end of the terminal passes through the back plug, and the second abutment abuts against the back plug, a first material breaking portion is arranged on the side of the first abutment away from the front end of the terminal, and a rivet is pierced through the outer shell.

2. A connector with a stable structure and terminal soldering feet that does not expose copper and is not prone to rust according to claim 1, characterized in that: The front end of the terminal is provided with a second cutting portion.

3. A connector with a stable structure and terminal soldering feet that does not expose copper and is not prone to rust according to claim 1, characterized in that: The left and right outer surfaces of the inner shell are both transversely provided with slide grooves, and a stopper is fixedly arranged in the slide groove. The left and right inner walls of the outer shell are both fixedly provided with a slide bar and a hook block, and the slide bar is located in the slide groove, and the hook block is hooked on the stopper.

4. A connector with a stable structure and terminal soldering feet that does not expose copper and is not prone to rust according to claim 1, characterized in that: A card slot is provided at the lower end of the inner shell, and card blocks are fixedly provided on both sides of the rear plug, and the card blocks are clamped in the card slot. A first hook bar is fixedly provided on the lower part of the left and right inner walls of the inner shell, and a second hook bar is fixedly provided on the left and right outer sides of the rear plug, and the first hook bar and the second hook bar are buckled with each other.

5. A connector with a stable structure and terminal soldering feet that does not expose copper and is not prone to rust according to claim 1, characterized in that: The inner shell is provided with a first conical groove, the front part of the terminal passes through the first conical groove, and the first abutment abuts in the first conical groove; the rear plug is provided with a second conical groove, the lower part of the terminal passes through the second conical groove, and the second abutment abuts in the second conical groove.

6. A connector with a stable structure and terminal soldering feet that does not expose copper and is not prone to rust according to claim 1, characterized in that: An external plug-in interface is fixedly arranged at the front end of the shell, and hooks are fixedly arranged on both sides of the external plug-in interface.

7. A connector with a stable structure and terminal soldering feet that does not expose copper and is not prone to rust according to claim 6, characterized in that: An inner plug-in interface is fixedly arranged at the front end of the inner shell, and the inner plug-in interface is located inside the outer plug-in interface. A plug-in slot is opened on the inner wall of the inner plug-in interface, and the front end of the terminal abuts against the plug-in slot.

8. A connector with a stable structure and terminal soldering feet that does not expose copper and is not prone to rust according to any one of claims 1 to 7, characterized in that: A contact portion is bent at the front of the terminal.

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