阅读说明：本技术 正反插usb插头 (Positive reverse plug USB plug ) 是由 张少灿 于 2019-10-17 设计创作，主要内容包括：一种正反插USB插头,包括绝缘本体、套设于所述绝缘本体外的金属外壳、插装于所述绝缘本体内的若干导电端子与卡扣件,所述绝缘本体包括环状基体、位于所述环状基体前端内的插接腔及在插拔方向贯穿所述绝缘本体的端子槽,所述端子槽在靠近所述插接腔一侧设有横向延伸的连接梁,所述导电端子包括基部、自所述基部后向延伸形成的焊脚及自所述基部上下两侧前向延伸形成的至少一个接触臂,所述基部上下两侧分别形成有缺口；本申请导电端子具有较好的弹性力。(A positive and negative plug USB plug comprises an insulating body, a metal shell sleeved outside the insulating body, a plurality of conductive terminals and a buckle piece, wherein the conductive terminals and the buckle piece are inserted in the insulating body; the conductive terminal has better elastic force.)

1. The utility model provides a positive reverse plug USB plug, includes insulator, cover locate the metal casing outside the insulator, cartridge in a plurality of conductive terminal and buckle spare in the insulator, insulator includes annular base member, is located grafting chamber in the annular base member front end and runs through in the plug direction insulator's terminal groove, its characterized in that, terminal groove is being close to grafting chamber one side is equipped with the tie-beam of horizontal extension, conductive terminal includes the basal portion, certainly the leg that the basal portion backward extension formed reaches from at least one contact arm that both sides forward extension formed about the basal portion, both sides are formed with the breach respectively about the basal portion.

2. The reversible USB plug of claim 1, wherein the base portion includes first and second ends connecting the contact arm and the solder tail, respectively, in the longitudinal direction, and a bridge portion connecting the first and second ends, and the notch is located on upper and lower sides of the bridge portion.

3. The reversible USB plug of claim 2, wherein at least some of the conductive terminals have a pair of contact arms, the bridge portion has a width less than the width of the first and second ends, and the bridge portion has a width less than the width of the pair of contact arms at the first end.

4. The reversible USB plug according to claim 2, wherein the upper and lower sides of the first end portion respectively form fulcrums for contacting with the upper and lower inner wall surfaces of the terminal slot, and the fulcrums support the elastic deformation of the contact arm.

5. The reversible USB plug of claim 2, wherein the first and second end portions are respectively formed with a first and a second convex hulls by stamping on the lateral outer sides thereof, the first and second convex hulls are respectively disposed in opposite directions in the lateral direction, and the first and second convex hulls respectively abut against the lateral inner wall surface of the terminal slot to prevent the conductive terminal from laterally shaking.

6. The plug according to claim 1, wherein the solder legs of the conductive terminal include a pair of solder legs extending from the upper and lower sides of the base, respectively, a clamping portion for clamping a circuit board is formed between the pair of solder legs, and the locking member includes a connecting portion, elastic arms extending from the left and right sides of the connecting portion in the plugging direction, a welding portion extending from the rear of the elastic arms, a locking portion extending from the front of the elastic arms, and an insulating block integrally formed on the connecting portion.

7. The reversible USB plug of claim 6, wherein the insulating body further has side slots on both lateral sides thereof for communicating with the insertion cavity, the elastic arm is inserted from the side slots on both lateral sides of the insulating body, the hook portion extends into the insertion cavity, and the connecting portion and the insulating block thereon abut against the clamping portion between the pair of solder legs of the conductive terminal and abut against the rear end of the base portion.

8. The front-back inserting USB plug according to claim 6, wherein a fixing welding portion is formed at a lateral outer side of the connecting portion in a protruding manner, the metal shell includes upper and lower peripheral walls and a lateral peripheral wall, a spot welding portion is provided at a position of the lateral peripheral wall corresponding to the fixing welding portion, and the spot welding portion is welded to the fixing welding portion integrally.

9. The reversible USB plug of claim 3, wherein the connecting beam is received between the two contact arms, and a rear end of the connecting beam abuts against the base portion to restrain the conductive terminal.

10. The reversible USB plug of claim 9, wherein the conductive terminals include ground terminals located at the outermost sides, power terminals located between the ground terminals, and signal terminals located between the power terminals, the lateral thickness of the ground terminals and the power terminals being greater than the thickness of the signal terminals, only one contact arm of the signal terminals being provided.

Technical Field

The present application relates to the field of connectors, and more particularly, to a USB plug with a positive and negative insertion.

Background

The Type C Type positive and negative plug USB plug is widely applied to electronic equipment such as mobile phones, and the traditional positive and negative plug USB plug comprises an insulating body provided with a plug cavity, and a first terminal group and a second terminal group which are inserted into the upper side and the lower side of the plug cavity in the insulating body; in order to simplify the product structure and the manufacturing process to reduce the cost, the patent CN201810269738.6 discloses a USB plug, which forms a large i-shaped structure by integrating the terminals corresponding to the upper and lower rows of terminals, so that the upper and lower rows of terminals are combined into a set of terminal structure; however, the length of the USB plug is required to be shorter, so that the arm of force of the upper and lower elastic contact arms of the terminal is shorter, the elastic force of the upper and lower elastic arms is deteriorated, and the elastic contact arms are easily deformed and damaged.

To solve the problem of insufficient elastic force, CN201920233706.0 discloses an i-shaped terminal structure, in which holes are formed in the middle of the base to improve the elastic force, but the middle hole solution still has insufficient elastic force for the terminal with a shorter overall structure.

Disclosure of Invention

Accordingly, there is a need for a reversible USB plug with a small length and a resilient contact arm with good resilient performance.

In order to solve the technical problem, the application provides a positive reverse plug USB plug, locate including insulator, cover insulator outer metal casing, cartridge in insulator a plurality of conductive terminal and buckle spare, insulator includes annular base member, is located grafting chamber in the annular base member front end and run through in the plug direction insulator's terminal groove, the terminal groove is being close to grafting chamber one side is equipped with the tie-beam of horizontal extension, conductive terminal include the basal portion, certainly the welding foot that the extension formed after the basal portion reaches certainly the at least one contact arm of both sides forward extension formation about the basal portion, both sides are formed with the breach respectively about the basal portion.

Preferably, the base portion includes a first end portion and a second end portion respectively connecting the contact arm and the solder tail in the longitudinal direction, and a bridging portion connecting the first end portion and the second end portion, and the notch is located on the upper side and the lower side of the bridging portion.

Preferably, at least some of the conductive terminals are provided with a pair of contact arms, the width of the bridging portion is smaller than the width of the first and second ends, and the width of the bridging portion is smaller than the width of the pair of contact arms at the position of the first end.

Preferably, upper and lower sides of the first end portion respectively form fulcrums contacting with upper and lower inner wall surfaces of the terminal groove, and the fulcrums support elastic deformation of the contact arm.

Preferably, the first and second convex hulls are formed on the lateral outer sides of the first and second end portions by stamping respectively, the first and second convex hulls are arranged in opposite directions in the lateral direction, and the first and second convex hulls are abutted against the lateral inner wall surface of the terminal groove respectively to prevent the conductive terminal from laterally shaking.

Preferably, the solder legs of the conductive terminal include a pair of solder legs formed by extending from the upper and lower sides of the base respectively, a clamping portion for clamping a circuit board is formed between the pair of solder legs, and the fastening member includes a connecting portion, elastic arms formed by extending from the left and right sides of the connecting portion in the plugging and unplugging direction, a welding portion formed by extending from the rear direction of the elastic arms, a hook portion formed by extending from the front direction of the elastic arms, and an insulating block integrally formed on the connecting portion.

Preferably, the two lateral sides of the insulating body are further provided with edge grooves communicated with the insertion cavity, the elastic arm is inserted from the edge grooves on the two lateral sides of the insulating body, the clamping hook portion extends into the insertion cavity, and the connecting portion and the insulating block thereon abut against the clamping portion between the pair of welding feet of the conductive terminal and abut against the rear end of the base portion.

Preferably, the metal shell includes upper and lower peripheral walls and a transverse peripheral wall, the transverse peripheral wall is provided with a spot welding portion corresponding to the position of the fixing and welding portion, and the spot welding portion and the fixing and welding portion are welded into a whole.

Preferably, the connecting beam is received between the two contact arms, and the rear end of the connecting beam abuts against the base portion to limit the conductive terminal.

Preferably, the conductive terminal includes a ground terminal located at the outermost side, a power terminal located between the ground terminals, and a plurality of signal terminals located between the power terminals, the lateral thickness of the ground terminal and the power terminal is greater than the thickness of the signal terminal, and only one contact arm is provided for the signal terminal.

According to the positive and negative insertion USB plug, the notches are formed in the upper side and the lower side of the base portion of the conductive terminal, so that the socket terminal is inserted and the contact arm deforms, the contact arm elastically deforms with the supporting point, the supporting point can continuously deform around the bridging portion, the supporting point moves backwards, the rigidity of the contact arm is further reduced, and good elastic force is achieved.

Simultaneously, the first and second convex hulls that first and second end portion horizontal outside reverse setting respectively interfere with the horizontal internal face in terminal groove, keep conductive terminal lateral stability in order to avoid rocking, avoid prior art to adopt the barb to interfere and cause about pierce the defect that the unbalance leads to conductive terminal position inaccurate.

Meanwhile, the outer side of the connecting part of the buckling part and the metal shell are welded into a whole in a spot mode, so that the force of the buckling part is transmitted to the metal shell, and better integrity is achieved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application.

Example 1

FIG. 1 is a combination diagram of a front-to-back USB plug of the present application;

FIG. 2 is an exploded perspective view of the front and back plug USB plug of the present application;

FIG. 3 is a perspective view of the insulator of the present application with the USB plug inserted in both the front and back;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;

FIG. 5 is a perspective view of the conductive terminal of the present application with the USB plug inserted in the front and back;

FIG. 6 is a perspective view of a fastener for inserting a USB plug in front and back directions;

FIG. 7 is a cross-sectional view of the front and back plug USB plug of the present application, taken along the line B-B of FIG. 1;