Large-current connector terminal structure

Abstract

The utility model discloses a large current connector terminal structure, comprising an upper row terminal group, a lower row terminal group and a middle iron sheet, the upper row terminal group comprises an upper signal terminal, a first upper power supply terminal and a second upper power supply terminal, the first upper power supply terminal and the second upper power supply terminal are arranged at two sides, and the lower row terminal group comprises a lower signal terminal, a first lower power supply terminal and a second lower power supply terminal, the first lower power supply terminal and the second lower power supply terminal are arranged at two sides. The middle iron sheet comprises a first middle iron sheet and a second middle iron sheet which are distributed at an interval, a clearance area is formed between the first middle iron sheet and the second middle iron sheet, and the upper signal terminal and the lower signal terminal are respectively arranged above and below the clearance area; the first upper power supply terminal and the first lower power supply terminal are respectively attached to the upper end surface and the lower end surface of the first middle iron sheet to be assembled, so that the thicknesses of the first upper power supply terminal and the first lower power supply terminal are set to be greater than or equal to 0.25 mm, the cross sectional area is increased, and large-current transmission is realized; the second upper power supply terminal and the second lower power supply terminal are respectively attached to the upper end face and the lower end face of the second middle iron sheet to be assembled, the thickness of the second upper power supply terminal and the thickness of the second lower power supply terminal are set to be larger than or equal to 0.25 mm, the cross sectional area is increased, and large-current transmission is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electric connector products, in particular to a large current connector terminal structure. BACKGROUND

[0002] USB is the abbreviation of English Universal Serial BUS, and the Chinese name is "Tong Chuan line", which is an external bus standard, used to standardize the connection and communication of computer and external equipment, and is an interface technology applied in PC field. USB not only has fast transmission speed, but also is very convenient to use. USB interface also has the functions of supporting device plug and play and hot plug, flexible connection, independent power supply and other advantages, can connect mouse, keyboard, printer, scanner, camera, flash disk, MP3 machine, mobile phone, digital camera, mobile hard disk, external optical drive, USB network card, ADSL Modem, cable Modem and almost all external devices, and is widely used.

[0003] Type-C is a connection interface of USB interface, which can be inserted without distinction between front and back, and the size is about 8.3mm*2.5mm, which supports the functions of charging, data transmission, display output and other functions of USB standard as other interfaces. Type-C connector mainly faces lighter and thinner devices, enhances usability, and lays a good foundation for performance enhancement of future USB version.

[0004] The Chinese utility model patent with patent application number 202322669408.5 discloses a high-type Type-C connector, which is provided with an upper insulating piece, a lower insulating piece, a first supporting piece and a second supporting piece, and the front and rear ends of the upper row of terminals are respectively embedded in the upper insulating piece and the first supporting piece, and the front and rear ends of the lower row of terminals are respectively embedded in the lower insulating piece and the second supporting piece, so that the terminal bending part is fixed by the first supporting piece and the second supporting piece, avoiding deformation of the terminal in the stamping injection molding process, and cooperating with the second supporting piece to be buckled together with the lower insulating piece and the first supporting piece, so that the buckling relationship between the second supporting piece and the lower insulating piece prevents the rebounding during bending, ensures the consistency of the terminal bending angle, and the buckling relationship between the second supporting piece and the first supporting piece prevents the misalignment between the upper row of terminals and the lower row of terminals, ensures the precision of the soldering feet, and effectively improves the overall processing quality of the connector.

[0005] However, the Type-C connector has the following disadvantages: the shielding sheet is arranged between all the upper row of terminals and all the lower row of terminals, so that the upper ground terminals in the upper row of terminals and the lower ground terminals in the lower row of terminals cannot directly contact the shielding sheet to achieve grounding, and the spacing between the upper end surface of the upper row of terminals and the lower end surface of the lower row of terminals is fixed, which meets the Type-C standard specification, and under this limitation, the thickness of the upper ground terminals and the upper VBUS terminals in the upper row of terminals, and the lower ground terminals and the lower VBUS terminals in the lower row of terminals are relatively small, that is, relatively thin, which is not conducive to achieving large current transmission.

[0006] Therefore, the present inventors propose the following technical solutions. The utility model discloses a large current connector terminal structure.

[0007] The utility model discloses a large current connector terminal structure.

[0008] In order to solve the above technical problems, the utility model adopts the following technical scheme: the large current connector terminal structure includes upper row of terminal group and lower row of terminal group and the middle iron sheet setting in between upper row of terminal group and lower row of terminal group, the upper row of terminal group includes a plurality of upper signal terminals and the first upper power terminal and the second upper power terminal located the both sides of upper signal terminal, the lower row of terminal group includes a plurality of lower signal terminals and the first lower power terminal and the second lower power terminal located the both sides of lower signal terminal, the middle iron sheet includes two independent and interval distribution's first middle iron sheet and second middle iron sheet, and the first middle iron sheet and second middle iron sheet form the avoidance area between it, and the upper signal terminal and lower signal terminal are placed above and below avoidance area respectively, the first upper power terminal and first lower power terminal are respectively fitted with the upper and lower end surface assembly of first middle iron sheet, and the thickness of first upper power terminal and first lower power terminal is set to be greater than or equal to 0.25mm, the second upper power terminal and second lower power terminal are respectively fitted with the upper and lower end surface assembly of second middle iron sheet, and the thickness of second upper power terminal and second lower power terminal is set to be greater than or equal to 0.25mm.

[0009] Further, in the above technical solution, the width of the first upper power terminal and the first lower power terminal, the second upper power terminal and the second lower power terminal is greater than or equal to 0.28mm.

[0010] Further, in the above technical solution, the first upper power terminal and the first lower power terminal, the second upper power terminal and the second lower power terminal are made of C18400 high-conductivity copper.

[0011] Further in the technical scheme, the upper row of terminals is integrally injection molded with an upper insulator, and the front end bottom surfaces of the first and second upper power terminals are exposed on the bottom surface of the upper insulator; the lower row of terminals is integrally injection molded with a lower insulator, and the front end top surfaces of the first and second lower power terminals are exposed on the upper surface of the lower insulator, the upper and lower insulators are positioned in an upper-lower abutting manner, and the first and second middle iron sheets are positioned between the upper and lower insulators and clamped and positioned by the upper and lower insulators.

[0012] Further in the technical scheme, the first and second middle iron sheets are provided with positioning holes penetrating the upper and lower end surfaces; the upper and lower insulators are further integrally injection molded with an insulating seat, the insulating seat partially penetrates the positioning holes to fix the first and second middle iron sheets in the insulating seat, and the front end of the insulating seat is formed with a tongue plate, the upper end surfaces of all the terminals in the upper row of terminals are exposed on the upper end surface of the tongue plate, and the lower end surfaces of all the terminals in the lower row of terminals are exposed on the lower end surface of the tongue plate.

[0013] Further in the technical scheme, the outer sides of the first and second middle iron sheets are respectively formed with a first and a second clamping protrusion; the tongue plate is provided with a first and a second clamping buckle on the two sides, and the first and second clamping protrusions are respectively exposed outside the first and second clamping buckle outer sides.

[0014] Further in the technical scheme, the outer side of the insulating seat is provided with a metal shell, and an abutting groove is formed between the tongue plate and the front end inner wall of the metal shell.

[0015] Further in the technical scheme, the rear end of the insulating seat is formed with a positioning protrusion on the two sides, and the rear end of the metal shell is provided with a positioning notch, which is embedded and positioned with the positioning protrusion.

[0016] Further in the technical scheme, the rear end of the insulating seat is provided with a plurality of positioning grooves on the outer side, and the metal shell is stamping formed with a plurality of pressing sheets corresponding to the positioning grooves, which are pressed into the positioning grooves for positioning.

[0017] Further in the technical scheme, the metal shell is formed with a plurality of downward extending pins on the two sides.

[0018] Compared with the prior art, the utility model discloses the following beneficial effects: the utility model discloses the middle iron sheet one is divided into two, and is provided with two first middle iron sheets and second middle iron sheets of size, which can reduce the material, reduce the cost, and the manufacture is more simple, and the first middle iron sheet and the second middle iron sheet form the avoidance area between, and the upper signal terminal and the lower signal terminal are placed above and below the avoidance area respectively, so that under the premise of guaranteeing the connector product pluggable force, life and mechanical property, prevent short circuit and poor voltage resistance, in addition, after the first upper power terminal and the first lower power terminal are respectively attached to the first middle iron sheet upper and lower end face assembly, the thickness of the first upper power terminal and the first lower power terminal can be set to be greater than or equal to 0.25mm, so as to increase the cross-sectional area, realize large current transmission, and the second upper power terminal and the second lower power terminal are respectively attached to the second middle iron sheet upper and lower end face assembly, so that the thickness of the second upper power terminal and the second lower power terminal is set to be greater than or equal to 0.25mm, so as to increase the cross-sectional area, realize large current transmission, so that the utility model discloses can realize large current transmission. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the perspective view of the utility model;

[0020] Figure 2 It is the perspective exploded view of the utility model;

[0021] Figure 3 It is the perspective view of the first upper power terminal and the first lower power terminal and the first middle iron sheet in the utility model;

[0022] Figure 4 It is the front view of the first upper power terminal and the first lower power terminal and the first middle iron sheet in the utility model;

[0023] Figure 5 It is the perspective view of the TYPE-C connector made by the utility model;

[0024] Figure 6 It is the perspective view of the TYPE-C connector made by the utility model from another angle;

[0025] Figure 7 It is the perspective exploded view of the TYPE-C connector made by the utility model. DETAILED DESCRIPTION

[0026] The utility model is further illustrated below in connection with specific embodiments and drawings.

[0027] See Figures 1-7As shown, it is a large current connector terminal structure, it includes the upper row terminal group 1 and the lower row terminal group 2 and the middle iron sheet 3 arranged between the upper row terminal group 1 and the lower row terminal group 2, the upper row terminal group 1 includes a plurality of upper signal terminals 11 and the first upper power terminal 12 and the second upper power terminal 13 located on both sides of the upper signal terminal 11, the lower row terminal group 2 includes a plurality of lower signal terminals 21 and the first lower power terminal 22 and the second lower power terminal 23 located on both sides of the lower signal terminal 21.

[0028] The biggest improvement of the utility model is: the middle iron sheet 3 includes two independent and interval distribution's first middle iron sheet 31 and second middle iron sheet 32, form the avoidance area 30 between the first middle iron sheet 31 and second middle iron sheet 32, the upper signal terminal 11 and lower signal terminal 21 are respectively placed above and below the avoidance area 30;The first upper power terminal 12 and first lower power terminal 22 are respectively fitted with the upper and lower end surfaces of the first middle iron sheet 31, so that the thickness of the first upper power terminal 12 and the first lower power terminal 22 is greater than or equal to 0.25mm;The second upper power terminal 13 and the second lower power terminal 23 are respectively fitted with the upper and lower end surfaces of the second middle iron sheet 32, so that the thickness of the second upper power terminal 13 and the second lower power terminal 23 is greater than or equal to 0.25mm.

[0029] The thickness of the upper and lower row terminals in the prior art is 0.15mm, and the middle iron sheet 3 is divided into two pieces in the utility model, which is set as two pieces of first middle iron sheet 31 and second middle iron sheet 32, which can reduce the material, reduce the cost, and the production is more simple, and the avoidance area 30 is formed between the first middle iron sheet 31 and the second middle iron sheet 32, and the upper signal terminal 11 and the lower signal terminal 21 are respectively placed above and below the avoidance area 30, so as to prevent short circuit and poor pressure resistance under the premise of ensuring the connector product insertion force, life and mechanical properties;In addition, after the first upper power terminal 12 and the first lower power terminal 22 are respectively fitted with the upper and lower end surfaces of the first middle iron sheet 31, the thickness of the first upper power terminal 12 and the first lower power terminal 22 can be set to be greater than or equal to 0.25mm, so as to increase the cross-sectional area and realize large current transmission;Similarly, the second upper power terminal 13 and the second lower power terminal 23 are respectively fitted with the upper and lower end surfaces of the second middle iron sheet 32, so that the thickness of the second upper power terminal 13 and the second lower power terminal 23 is greater than or equal to 0.25mm, so as to increase the cross-sectional area and realize large current transmission, so that the utility model can realize large current transmission.

[0030] The thickness of the upper and lower terminals in the prior art is 0.20-0.25 mm, and the width of the first upper power terminal 12 and the first lower power terminal 22, the second upper power terminal 13 and the second lower power terminal 23 is greater than or equal to 0.28 mm, so as to increase the width and further increase the cross-sectional area, and better realize large current transmission.

[0031] In addition, the first upper power terminal 12 and the first lower power terminal 22, the second upper power terminal 13 and the second lower power terminal 23 are all made of C18400 high-conductivity copper (i.e. chromium bronze), which has high electrical resistivity, up to 83.7% IACS, good thermal conductivity, up to 330 W / m·k, and can better realize large current transmission.

[0032] The upper terminal group 1 is integrally injection molded with an upper insulator 4 to form a split type MD assembly, and the front end bottom surface of the first upper power terminal 12 and the second upper power terminal 13 is exposed on the bottom surface of the upper insulator 4; the lower terminal group 2 is integrally injection molded with a lower insulator 5 to form a split type MD assembly, and the front end top surface of the first lower power terminal 22 and the second lower power terminal 23 is exposed on the upper surface of the lower insulator 5, the upper insulator 4 and the lower insulator 5 are positioned in an upper and lower abutting manner, and the first middle iron sheet 31 and the second middle iron sheet 32 are placed between the upper insulator 4 and the lower insulator 5 and clamped and positioned by the upper insulator 4 and the lower insulator 5. The upper and lower terminal groups are designed as split type MD assemblies, which can improve product quality and reduce process defects, and are convenient to assemble.

[0033] The upper insulator 4 and the lower insulator 5 are further integrally injection molded with an insulating seat 6 outside, so as to form a stable connector semi-finished product, and a metal shell 7 is then sleeved on the insulating seat 6, that is, a complete TYPE-C connector is formed.

[0034] The first middle iron sheet 31 and the second middle iron sheet 32 are both provided with positioning holes 301 penetrating the upper and lower end surfaces; the insulating seat 6 partially penetrates the positioning holes 301 to fix the first middle iron sheet 31 and the second middle iron sheet 32 in the insulating seat 6, and the assembly structure is extremely stable, so that the first middle iron sheet 31 and the second middle iron sheet 32 are stably assembled relative to the upper terminal group 1 and the lower terminal group 2. The front end of the insulating seat 6 is formed with a tongue plate 61, the upper end surface of all terminals in the upper terminal group 1 is exposed on the upper end surface of the tongue plate 61, and the lower end surface of all terminals in the lower terminal group 2 is exposed on the lower end surface of the tongue plate 61, so as to facilitate electrical connection with the mating connector.

[0035] The outer sides of the first and second middle iron sheets 31 and 32 are respectively formed with first and second clamping protrusions 311 and 321; the tongue plate 61 is provided with first and second buckles 611 and 612 on both sides, and the first and second clamping protrusions 311 and 321 are respectively protruded outside the outer sides of the first and second buckles 611 and 612, so as to enhance the strength of the first and second buckles 611 and 612, avoid the breakage or bending of the first and second buckles 611 and 612, and improve the service life of the product.

[0036] The outer side of the insulating seat 6 is sleeved with a metal shell 7, and a mating groove 70 for mating with a mating connector is formed between the tongue plate 61 and the inner wall of the front end of the metal shell 7.

[0037] The rear end of the insulating seat 6 is formed with positioning protrusions 62 on both sides, and the rear end of the metal shell 7 is provided with positioning notches 71, which are embedded and positioned with the positioning protrusions 62, so that the metal shell 7 is stably installed on the periphery of the insulating seat 6. In addition, the rear end of the insulating seat 6 is provided with a plurality of positioning grooves 63, and the metal shell 7 is stamped and formed with a plurality of pressing pieces 72 corresponding to the positioning grooves 63, which are pressed into the positioning grooves 63 for positioning, so that the metal shell 7 is stably installed on the periphery of the insulating seat 6.

[0038] The metal shell 7 is formed with a plurality of downward extending pins 73 on both sides, which are used for positioning and welding fixation with the PCB board, and can also realize ground conduction.

[0039] As described above, the middle iron sheet 3 is divided into two, and is provided with the first and second middle iron sheets 31 and 32 with different sizes, which can reduce the material usage, reduce the cost, and make the manufacturing more simple. In addition, the first and second middle iron sheets 31 and 32 form an empty area 30, and the upper and lower signal terminals 11 and 21 are respectively arranged above and below the empty area 30, so as to prevent short circuit and poor voltage resistance under the premise of ensuring the plug-in force, service life and mechanical properties of the connector product. In addition, after the first upper and lower power supply terminals 12 and 22 are respectively assembled with the upper and lower end faces of the first middle iron sheet 31, the thickness of the first upper and lower power supply terminals 12 and 22 can be set to be greater than or equal to 0.25mm, so as to increase the cross-sectional area and realize large current transmission. Similarly, the second upper and lower power supply terminals 13 and 23 are respectively assembled with the upper and lower end faces of the second middle iron sheet 32, so that the thickness of the second upper and lower power supply terminals 13 and 23 is set to be greater than or equal to 0.25mm, so as to increase the cross-sectional area and realize large current transmission, so that the utility model can realize large current transmission.

[0040] Of course, the above only the specific embodiments of the present application, not to limit the scope of the present application, all equivalent changes or modifications made in accordance with the principles of the present application described in the scope of the present application, should be included in the scope of the present application.

Claims

1. A high-current connector terminal structure comprising an upper terminal group (1) and a lower terminal group (2) and a middle iron sheet (3) arranged between the upper terminal group (1) and the lower terminal group (2), the upper terminal group (1) comprising a plurality of upper signal terminals (11) and first and second upper power terminals (12, 13) located on both sides of the upper signal terminals (11), and the lower terminal group (2) comprising a plurality of lower signal terminals (21) and first and second lower power terminals (22, 23) located on both sides of the lower signal terminals (21), characterized in that: the middle iron sheet (3) comprises two independent and spaced-apart first and second middle iron sheets (31, 32), an empty area (30) being formed between the first and second middle iron sheets (31, 32), and the upper and lower signal terminals (11, 21) being arranged above and below the empty area (30) respectively; the first upper and lower power terminals (12, 22) are respectively fitted to the upper and lower end faces of the first middle iron sheet (31), and the thicknesses of the first upper and lower power terminals (12, 22) are set to be greater than or equal to 0.25 mm; and the second upper and lower power terminals (13, 23) are respectively fitted to the upper and lower end faces of the second middle iron sheet (32), and the thicknesses of the second upper and lower power terminals (13, 23) are set to be greater than or equal to 0.25 mm. The widths of the first upper and lower power terminals (12, 22) and the second upper and lower power terminals (13, 23) are greater than or equal to 0.28 mm.

2. A high current connector terminal structure according to claim 1, characterized in that: The first upper and lower power terminals (12, 22) and the second upper and lower power terminals (13, 23) are all made of C18400 high-conductivity copper.

3. A high current connector terminal structure according to claim 2, wherein: An upper insulator (4) is integrally injection molded on the upper terminal group (1), and the front end bottom surfaces of the first and second upper power terminals (12, 13) are exposed on the bottom surface of the upper insulator (4); a lower insulator (5) is integrally injection molded on the lower terminal group (2), and the front end top surfaces of the first and second lower power terminals (22, 23) are exposed on the upper surface of the lower insulator (5), the upper and lower insulators (4, 5) are positioned in abutment with each other, and the first and second middle iron sheets (31, 32) are positioned between the upper and lower insulators (4, 5) and clamped and positioned by the upper and lower insulators (4, 5).

4. A high current connector terminal structure according to any one of claims 1-3, characterized in that: ​ 5. A high current connector terminal structure according to claim 4, wherein: The first middle iron sheet (31) and the second middle iron sheet (32) are provided with positioning holes (301) penetrating the upper and lower end faces; the upper insulator (4) and the lower insulator (5) are further integrally injection molded with an insulating seat (6), the insulating seat (6) partially penetrates the positioning holes (301) to fix the first middle iron sheet (31) and the second middle iron sheet (32) in the insulating seat (6), and the front end of the insulating seat (6) is molded with a tongue plate (61), the upper end faces of all the terminals in the upper terminal group (1) are highlighted on the upper end face of the tongue plate (61), and the lower end faces of all the terminals in the lower terminal group (2) are highlighted on the lower end face of the tongue plate (61).

6. A high current connector terminal structure according to claim 5, wherein: The outer sides of the first middle iron sheet (31) and the second middle iron sheet (32) are respectively molded with a first clamping convex (311) and a second clamping convex (321); the tongue plate (61) is provided with a first buckle (611) and a second buckle (612) on both sides, and the first clamping convex (311) and the second clamping convex (321) are respectively highlighted outside the outer side faces of the first buckle (611) and the second buckle (612).

7. A high current connector terminal structure according to Claim 5, wherein: The insulating seat (6) is externally sleeved with a metal shell (7), and a butt joint groove (70) is formed between the tongue plate (61) and the front end inner wall of the metal shell (7).

8. A high current connector terminal structure according to claim 7, wherein: The rear end of the insulating seat (6) is molded with positioning protrusions (62) on both sides, the rear end of the metal shell (7) is provided with a positioning notch (71), and the positioning notch (71) is embedded and positioned with the positioning protrusions (62).

9. A high current connector terminal structure according to Claim 7, wherein: The rear end of the insulating seat (6) is provided with a plurality of positioning grooves (63) on the outer side, the metal shell (7) is stamped and molded with a plurality of pressing pieces (72) corresponding to the positioning grooves (63), and the pressing pieces (72) are pressed into the positioning grooves (63) for positioning.

10. A high current connector terminal structure according to Claim 7, wherein: The metal shell (7) is molded with a plurality of downward extending insertion pins (73) on both sides.

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