USB socket that can be reversibly sunk

Abstract

A USB socket with forward and reverse sinking plates, comprising a plug-in, a metal inner shell sleeved outside the plug-in, and a metal outer shell fixed outside the metal inner shell, the metal outer shell comprising an upper shell and a lower shell respectively fixed on both sides of the upper and lower surfaces of the metal inner shell, the upper shell and the lower shell respectively comprising an upper plate portion and a lower plate portion fixed to the upper and lower side surfaces of the metal inner shell, an upper arc portion and a lower arc portion bent and extended from the lateral sides of the upper plate portion and the lower plate portion and covering the lateral sides of the metal inner shell, an upper ear portion and a lower ear portion that are horizontally bent and extended from the free ends of the upper arc portion and the lower arc portion to form a mutual contact, and fixing holes opened on the upper ear portion and the lower ear portion, the height of the upper arc portion is not equal to the height of the lower arc portion, and the USB socket is respectively attached to a printed circuit board through the upper ear portion or the lower ear portion to realize sinking plate designs of different specifications; the USB socket of the present application has strong versatility.

Description

Technical Field

[0001] The present application relates to the field of connectors, and in particular to a USB socket capable of being sunk forwards or backwards. Background Art

[0002] Type C USB sockets are widely used in mobile phones and other electronic devices. According to different application requirements, they are divided into on-board type and sunken type. On-board type means that the USB socket is mounted on the surface of the printed circuit board, while the sunken type is sunken from the surface of the printed circuit board, so that the thickness of the USB socket is dispersed on both sides of the printed circuit board, reducing the overall thickness of the motherboard. Usually, a sunken type USB socket is only suitable for one electronic product, only for the appropriate circuit board sinking height, and cannot be used on another electronic product. Summary of the invention

[0003] In view of this, it is necessary to provide a USB socket with two different sinker heights to adapt to the forward and reverse sinker requirements of two electronic products.

[0004] To solve the above technical problems, the present application provides a USB socket with forward and reverse sinking plates, comprising a plug-in, a metal inner shell sleeved outside the plug-in, and a metal outer shell fixed outside the metal inner shell, the metal outer shell comprising an upper shell and a lower shell respectively fixed on both sides of the upper and lower surfaces of the metal inner shell, the upper shell and the lower shell respectively comprising an upper plate portion and a lower plate portion fixed to the upper and lower side surfaces of the metal inner shell, an upper arc portion and a lower arc portion bent and extended from the lateral sides of the upper plate portion and the lower plate portion and covering the lateral sides of the metal inner shell, an upper ear portion and a lower ear portion that are horizontally bent and extended from the free ends of the upper arc portion and the lower arc portion to form a mutual fit, and a fixing hole opened on the upper ear portion and the lower ear portion, the height of the upper arc portion is not equal to the height of the lower arc portion, and the USB socket is fitted on a printed circuit board through the upper ear portion or the lower ear portion to realize sinking plate designs of different specifications.

[0005] The height of the upper arc-shaped portion of the USB socket of the present application is smaller than the height of the lower arc-shaped portion. The lower ear portion is attached to the surface of the printed circuit board to enable the USB socket to be soldered on the printed circuit board in a sinker manner. Alternatively, the upper ear portion is attached to the surface of the printed circuit board to enable the USB socket to be soldered on the printed circuit board with another sinker height. In this way, the USB socket of the present application is attached to the printed circuit board through the upper ear portion or the lower ear portion, respectively, and two different sinker depths are achieved in conjunction with the different heights of the upper arc-shaped portion and the lower arc-shaped portion, so that the same USB socket is suitable for the sinker depth requirements required by different electronic devices, thereby improving the versatility of the USB socket of the present application and reducing mold development costs and production management costs.

[0006] Preferably, the connector includes a first terminal group, a metal middle plate, a first insulator formed by integrally molding the first terminal group and the metal middle plate, a second terminal group, and a second insulator formed by integrally molding the second terminal group and the first insulator.

[0007] Preferably, the second insulator includes a base, a step portion extending forward from the base, and a docking tongue portion extending forward from the step portion, and the first and second terminal groups include contact portions exposed on upper and lower surfaces of the docking tongue portion, respectively.

[0008] Preferably, a front card slot is provided at the front end edge of the base, a rear card slot is provided at the rear end edge of the base, and the metal inner shell includes an annular body, a through hole that passes through the annular body front to back for inserting the connector, and a front card block and a rear card block that are punched from the upper and lower surfaces of the annular body and snapped into the front card slot and the rear card slot.

[0009] Preferably, the upper plate portion and the lower plate portion are spot welded to the upper surface of the annular body respectively, the side surface of the annular body is an arc structure, the upper arc portion and the lower arc portion completely cover the side surface of the annular body, and the upper ear portion and the lower ear portion are attached and spot welded.

[0010] Preferably, the fixing holes are fastened to the printed circuit board by screws.

[0011] Preferably, the first and second terminal groups further include a retaining portion extending backward from the contact portion and formed in the step portion and the base, and a solder foot extending backward from the retaining portion to the rear end of the base, the solder feet of the first and second terminal groups are arranged in a row, the thickness of the solder feet of the first and second terminal groups are consistent, and the upper and lower surfaces of the solder feet are respectively flush.

[0012] Preferably, the thickness of the first terminal group is 0.25 mm, the thickness of the second terminal group is 0.2 mm, and the solder feet of the first terminal group are thinned by stamping to make them consistent with the thickness of the solder feet of the second terminal group.

[0013] Preferably, the first and second terminal groups respectively include a pair of ground terminals located at the outermost sides, a pair of power terminals located inside the pair of ground terminals and a plurality of signal terminals located between the pair of power terminals, and the metal middle plate includes independently arranged first and second middle plates, the first and second middle plates are respectively located between the upper and lower rows of ground terminals of the first terminal group and the second terminal group, and there is no metal middle plate between the upper and lower rows of power terminals and signal terminals.

[0014] Preferably, the first terminal group is directly laminated together with the metal middle plate and then subjected to a first injection molding to form the first insulator, the grounding terminals of the first terminal group are respectively in electrical contact with the first and second middle plates, a covering base is formed on the side of the first insulator away from the first terminal group, and a plurality of terminal grooves are respectively formed on the covering base in the front and rear directions, and the second terminal group is assembled in the terminal groove and limited in position and then subjected to injection molding again to form the second insulator. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0016] Figure 1 A three-dimensional diagram of the USB socket sinker welded on the printed circuit board in this application;

[0017] Figure 2 This is a three-dimensional exploded view of the metal shell of the present application;

[0018] Figure 3 A three-dimensional diagram of the connector of the USB socket of this application;

[0019] Figure 4 This is a three-dimensional exploded view of the connector of the USB socket of this application;

[0020] Figure 5 This is a three-dimensional exploded view of the connector of the USB socket of the present application after removing the second insulating body;

[0021] Figure 6 A three-dimensional diagram of the first and second terminal groups and the metal middle plate of the plug-in component of the USB socket of the present application;

[0022] Figure 7 This is a side view of the first and second terminal groups and the metal middle plate of the plug-in component of the USB socket of the present application. DETAILED DESCRIPTION

[0023] In order to make the objectives, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be clearly and completely described below in conjunction with the specific embodiments of the present application and the corresponding drawings.

[0024] See also Figure 1 As shown, the USB socket that can be sunk forward and backward in this application includes a plug A and a metal shell 20, 30 sleeved outside the plug A. The metal shell includes a metal inner shell 20 and a metal outer shell 30 fixed outside the metal inner shell 20. The USB socket sunk plate is welded on the printed circuit board 10. In this application, the X direction is the front, the Y direction is the right, and the Z direction is the top.

[0025] See also Figures 1 to 4 As shown, the connector A includes a first terminal group 40, a metal middle plate 60, a first insulator 80 that forms the first terminal group 40 and the metal middle plate 60 as one body, a second terminal group 50 assembled on the side of the first insulator 80 away from the first terminal group 40, and a second insulator 70 that combines the second terminal group 50 and the first insulator 80 as one body.

[0026] The second insulator 70 includes a base 71, a step portion 72 extending forward from the base 71, and a docking tongue 73 extending forward from the step portion 72. A front slot 711 is provided at the front edge of the base 71, and a rear slot 712 is provided at the rear edge of the base 71.

[0027] The metal inner shell 20 includes an annular body 21, a through hole 22 that passes through the annular body 21 from front to back, a pressing protrusion 23 that is punched from the upper and lower surfaces of the annular body 21 and extends into the through hole 22, a front clamping block 24 that is punched from the rear end of the annular body 21 into the through hole 22 and is inserted into the front clamping groove 711, and a rear clamping block 25 that is punched from the rear end of the annular body 21 into the through hole 22 and is inserted into the rear clamping groove 712.

[0028] The metal shell 30 includes an upper shell 32 fixed to the upper side of the annular body 21 and a lower shell 31 fixed to the lower side of the annular body 21 and attached to the upper shell 32. The lower shell 31 includes a lower plate 311 spot-welded on the lower surface of the annular body 21, a lower arc-shaped portion 312 formed by bending from the left and right sides of the lower plate 311 and attached to the lateral outer side of the annular body 21, a lower ear 313 formed by bending and extending horizontally from the free end of the lower arc-shaped portion 312, and a lower fixing hole 314 opened on the lower ear 313. The upper shell 32 includes an upper plate 321 attached to the upper surface of the annular body 21, an upper arc-shaped portion 322 formed by bending from both sides of the upper plate 321 and attached to the lateral outer side of the annular body 21, an upper ear 323 formed by bending and extending horizontally from the upper arc-shaped portion 322, and an upper positioning hole 324 opened on the upper ear 323. The upper arc portion 322 cooperates with the lower arc portion 312 to cover the arc-shaped side surfaces on the left and right sides of the annular body 21, the upper ear portion 323 and the lower ear portion 313 are completely attached and spot welded together, and the upper fixing hole 324 and the lower fixing hole 314 correspond to each other to form fixing holes.

[0029] The key point is that the height of the upper arc portion 322 is less than the height of the lower arc portion 312. The lower ear portion 313 is attached to the surface of the printed circuit board 10 to enable the USB socket to be soldered on the printed circuit board 10 in a sinker manner. Alternatively, the upper ear portion 323 is attached to the surface of the printed circuit board 10 to enable the USB socket to be soldered on the printed circuit board 10 with another sinker height. In this way, the USB socket of the present application is attached to the printed circuit board 10 through the upper ear portion 323 or the lower ear portion 313 respectively, and two different sinker depths are achieved by cooperating with the different heights of the upper arc portion 322 and the lower arc portion 312, so that the same USB socket is suitable for the sinker depth requirements required by different electronic devices, thereby improving the versatility of the USB socket of the present application and reducing the mold development cost and production management cost.

[0030] See also Figures 4 to 7 As shown, the first and second terminal groups 40, 50 of the plug connector A respectively include a contact portion 51 exposed on the upper and lower surfaces of the mating tongue portion, a retaining portion 52 extending backward from the contact portion 51 to be embedded in the step portion 72 and the base portion 71, and a welding foot 53 extending from the retaining portion 52 to the rear of the base portion 71. The welding feet 53 of the first terminal group 40 and the second terminal group 50 are arranged in a row at the rear end of the base portion 71, and the upper and lower surfaces of the row of welding feet 53 are flush.

[0031] The first and second terminal groups 40, 50 each include a pair of grounding terminals 54 located at the outermost sides in the transverse direction, a pair of power terminals 55 located between the pair of grounding terminals 54, and a plurality of signal terminals 56 located between the pair of power terminals 55. The metal middle plate 60 includes a first middle plate 61 and a second middle plate 62 independently arranged between the grounding terminals 54 of the first terminal group 40 and the second terminal group 50. The transverse outer sides of the first middle plate 61 and the second middle plate 63 are respectively exposed to the transverse outer sides of the docking tongue 73 and form a retaining recess 63. The first and second middle plates 63, 64 are also provided with a plurality of through holes 64 for plastic filling and fixing. The first and second middle plates 63, 64 are respectively located between the two pairs of grounding terminals 54 of the first and second terminal groups 40, 50. There is no metal middle plate 60 between the two pairs of power terminals 55 and the plurality of pairs of signal terminals 56.

[0032] The thickness of the first terminal group 40 is 0.25 mm, the thickness of the second terminal group 50 is 0.2 mm, the grounding terminal 54 of the first terminal group 40 directly contacts the first and second middle plates 61, 62, and there is a gap between the grounding terminal 54 of the second terminal group 50 and the first and second middle plates 61, 62. The welding foot 53 of the first terminal group 40 is pressed thin by stamping so that its thickness is consistent with the thickness of the welding foot 53 of the second terminal group 50, that is, 0.2 mm. In this way, the thickness of the first terminal group 40 is thickened, and the current carrying capacity is increased. At the same time, the welding foot 53 of the first terminal group 40 is pressed thin and its upper and lower surfaces are flush with the upper and lower surfaces of the welding foot 53 of the second terminal group 50, so that the sunken plate design on both sides can be realized.

[0033] During the manufacturing process, the first terminal group 40 and the metal middle plate 60 are superimposed together and then subjected to the first injection molding to form the first insulator 80. When positioned, the power terminal 55 and the signal terminal 56 of the first terminal group 40 are clamped at the upper and lower sides, the upper surface of the grounding terminal 54 of the first terminal group 40 and the lower surface of the corresponding position of the metal middle plate 60 are clamped respectively, and the lower surface of the grounding terminal 54 is in direct contact with the upper surface of the metal middle plate 60. The first insulator 80 forms a covering base 81 covering the metal middle plate 60 and the first terminal group 40 (power terminal 55 and signal terminal 56) on one side of the metal middle plate 60, and the first, second, and third terminal grooves 84, 83, 82 formed on the covering base 81 in the front-to-back direction. The first, second, and third terminal grooves 84, 83, 82 are respectively used to limit the contact portion 51, the retaining portion 52, and the combination position of the welding foot 53 and the retaining portion 52 of the second terminal group 50. The second terminal groups 50 are in direct contact with the covering bases 81 of the first insulator 80 , respectively.

[0034] After the second terminal group 50 is limited on the first insulator 80 , the first insulator 80 and the second terminal group 50 are positioned again to perform a second injection molding to form the second insulator 70 .

[0035] The first terminal group 40 of the connector A of the present application is thicker than the second terminal group 50. When stamping the first terminal group 40, the welding feet 53 of the first terminal group 40 are thinned at the same time to make them consistent in thickness with the welding feet 53 of the second terminal group 50. During the first injection molding, the first terminal group 40 and the metal middle plate 60 can be directly superimposed and fixed, and then the second terminal group 50 is placed on the first insulator 80 for a second injection molding to complete the injection molding of the connector. Compared with the prior art, one injection molding process can be reduced.

[0036] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A USB socket with a forward and reverse sinking plate, comprising a plug-in, a metal inner shell sleeved outside the plug-in, and a metal outer shell fixed outside the metal inner shell, wherein the metal outer shell comprises an upper shell and a lower shell respectively fixed to both sides of the upper and lower surfaces of the metal inner shell, wherein the upper shell and the lower shell respectively comprise an upper plate portion and a lower plate portion fixed to the upper and lower side surfaces of the metal inner shell, an upper arc portion and a lower arc portion bent and extended from the lateral sides of the upper plate portion and the lower plate portion and covering the lateral sides of the metal inner shell, an upper ear portion and a lower ear portion that are formed by bending and extending horizontally from the free ends of the upper arc portion and the lower arc portion to fit each other, and fixing holes opened on the upper ear portion and the lower ear portion, characterized in that: The height of the upper arc portion is not equal to the height of the lower arc portion, and the USB socket is attached to the printed circuit board through the upper ear portion or the lower ear portion to realize sinker designs of different specifications.

2. The USB socket according to claim 1, characterized in that: The plug connector includes a first terminal group, a metal middle plate, a first insulator formed by integrally forming the first terminal group and the metal middle plate, a second terminal group, and a second insulator formed by integrally forming the second terminal group and the first insulator.

3. The USB socket according to claim 2, characterized in that: The second insulator includes a base, a step portion extending forward from the base, and a docking tongue portion extending forward from the step portion. The first and second terminal groups include contact portions exposed on upper and lower surfaces of the docking tongue portion, respectively.

4. The USB socket according to claim 3, characterized in that: A front card slot is provided at the front end edge of the base, and a rear card slot is provided at the rear end edge of the base. The metal inner shell includes an annular body, a through hole that passes through the annular body front and back for inserting the connector, and a front card block and a rear card block that are punched from the upper and lower surfaces of the annular body and snapped into the front card slot and the rear card slot.

5. The USB socket according to claim 4, characterized in that: The upper plate portion and the lower plate portion are spot welded and fixed on the upper surface of the annular body respectively. The side surface of the annular body is an arc structure. The upper arc portion and the lower arc portion completely cover the side surface of the annular body. The upper ear portion and the lower ear portion are attached and spot welded.

6. The USB socket according to claim 5, characterized in that: The fixing holes are locked on the printed circuit board by screws.

7. The USB socket according to any one of claims 3 to 6, characterized in that: The first and second terminal groups also include a retaining portion extending backward from the contact portion and formed in the step portion and the base, and a solder foot extending backward from the retaining portion to the rear end of the base. The solder feet of the first and second terminal groups are arranged in a row, the thickness of the solder feet of the first and second terminal groups are consistent, and the upper and lower surfaces of the solder feet are respectively flush.

8. The USB socket according to claim 7, characterized in that: The thickness of the first terminal group is 0.25 mm, the thickness of the second terminal group is 0.2 mm, and the soldering feet of the first terminal group are thinned by stamping to make the thickness consistent with that of the soldering feet of the second terminal group.

9. The USB socket according to claim 8, characterized in that: The first and second terminal groups respectively include a pair of grounding terminals located at the outermost sides, a pair of power terminals located inside the pair of grounding terminals, and a plurality of signal terminals located between the pair of power terminals. The metal middle plate includes a first and a second middle plate independently arranged. The first and the second middle plates are respectively located between the upper and lower rows of grounding terminals of the first terminal group and the second terminal group. There is no metal middle plate between the upper and lower rows of power terminals and signal terminals.

10. The USB socket according to claim 9, characterized in that: The first terminal group is directly laminated together with the metal middle plate and then subjected to a first injection molding to form the first insulator. The grounding terminals of the first terminal group are respectively in electrical contact with the first and second middle plates. A covering base is formed on the side of the first insulator away from the first terminal group. The covering base is respectively formed with a plurality of terminal grooves in the front and rear directions. The second terminal group is assembled in the terminal groove and limited in position and then subjected to a second injection molding to form the second insulator.

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