Type C female seat connector

Abstract

The utility model discloses a Type C female seat connector, which comprises a first plastic body, a first assembly, a second plastic body, a metal shell and a waterproof rubber block, wherein the first assembly and the first plastic body are subjected to injection molding to form a plastic assembly; the plastic assembly is surrounded by the second plastic body; the periphery of the second plastic body is coated with the metal shell; the second plastic body and the plastic component jointly surround to form an inserting groove; the first assembly comprises an upper-row terminal plastic part and a lower-row terminal plastic part which are stacked up and down, and a middle isolation sheet clamped between the upper-row terminal plastic part and the lower-row terminal plastic part. And the grounding piece is attached to the upper surface of the upper-row terminal plastic piece and the lower surface of the lower-row terminal plastic piece, and the left side and the right side of the grounding piece are welded together with the middle isolation piece. According to the utility model, the manufacturing cost is reduced, the relative position stability of the assembled upper and lower terminal plastic parts during injection molding is improved, and the service life is long.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrical connectors, and particularly relates to a Type-C female socket connector.

Background Art

[0002] An electrical connector is a connector used for signal transmission and power transmission, and can be applied to the power or information transmission of electronic devices such as wireless Bluetooth headsets, mobile phones, tablets, computers, etc.

[0003] An electrical connector generally includes a plastic terminal assembly, a metal shell, and a seal. The plastic terminal assembly is a plastic assembly obtained by injection molding of metal terminals. Some connectors may also be provided with a metal spacer or a reinforcing steel sheet in the plastic terminal assembly according to requirements; the metal shell surrounds the outer ring of the plastic terminal assembly and is generally connected to the reinforcing steel sheet inside the plastic terminal assembly by spot welding to achieve stop fixation in the front-back direction; the seal includes a potting filling block filled in the tail cavity of the plastic terminal assembly and a waterproof sealing ring sleeved around the outer periphery of the electrical connector's insertion port; the potting filling block is used to seal the tail of the plastic terminal assembly to prevent external moisture from entering the device (such as a mobile phone, a tablet, etc.) through the insertion port; the waterproof sealing ring is used to eliminate the gap between the female socket connector and the device housing to prevent moisture from entering the device through this gap.

[0004] In order to improve the safety performance of the electrical connector, a grounding piece is also provided in some electrical connectors. For example, patent CN109687224B discloses an electrical connector, which includes an inner injection molding part and an outer injection molding part. The inner injection molding part includes an upper connection component and a lower connection component. The upper connection component includes an upper insulating block, an upper row of terminals and an upper grounding piece injection molded together with the upper insulating block; the lower connection component includes a lower insulating block, an intermediate shielding piece, a lower row of terminals and a lower grounding piece injection molded together with the lower insulating block; after the upper connection component and the lower connection component are snap-fitted and assembled together, they are placed in an injection mold to inject the outer injection molding part to obtain the electrical connector. The upper grounding piece and the lower grounding piece are grounded by contacting the surface of the metal shell. At the same time, when mating with the male head, grounding is achieved by abutting against the grounding piece on the male head, improving the safety of the electrical connector. However, in the manufacturing process of the above electrical connector, the upper connection component and the lower connection component are only fixed in relative position by mutual buckling, and their relative position stability is poor, and it is easy to be offset during injection molding filling, resulting in poor molding; and the upper and lower grounding pieces are electrically connected by the close fit of the exposed surface with the inner surface of the metal shell, leaving no enough area for the contact of the grounding piece at the male head end, which poses a design difficulty.

[0005] In addition, the connector tongue portion generally includes a contact section where the metal terminals are exposed and a transition section where no metal terminals are exposed along the length direction. In the connector structure of the prior art, the outer peripheral surface of the transition section is generally a plastic body, which is prone to wear during frequent plugging and unplugging processes, affecting the normal use of the connector and reducing its service life.

[0006] Therefore, it is necessary to provide a new Type-C female socket connector to solve the above technical problems.

Utility Model Content

[0007] The main purpose of the present utility model is to provide a Type-C female socket connector, which reduces the manufacturing cost, improves the relative position stability during injection molding after the upper and lower terminal plastic parts are assembled, and has a long service life.

[0008] The present utility model realizes the above object through the following technical solutions: a Type-C female socket connector, which includes a first plastic body, a first component injection-molded with the first plastic body into a plastic component, a second plastic body surrounding the plastic component, a metal shell covering the outer periphery of the second plastic body, and a waterproof rubber block filled in the tail of the second plastic body; a plugging slot is jointly formed between the second plastic body and the plastic component; the first component includes an upper row of terminal plastic parts and a lower row of terminal plastic parts stacked on top of each other, a middle isolation sheet sandwiched between the upper row of terminal plastic parts and the lower row of terminal plastic parts, and a grounding sheet attached to the upper surface of the upper row of terminal plastic parts and the lower surface of the lower row of terminal plastic parts and welded to the middle isolation sheet at both left and right sides.

[0009] Further, a pair of connecting pieces extend backward from the rear side of the middle isolation sheet, and a vertical plate portion is formed at the free end of the connecting piece, and the vertical plate portion is welded to the metal shell.

[0010] Further, the plastic component includes a connecting portion and a tongue portion, and the tongue portion includes a functional section at the front end and a transition section between the functional section and the connecting portion; the thickness and width of the transition section are both greater than those of the functional section; the grounding sheet is covered on the upper surface and the lower surface of the transition section.

[0011] Further, the head of the grounding sheet is thinned and buried in the first plastic body.

[0012] Further, the middle spacer is integrally formed and includes a spacer body, side protection strips located on the left and right sides of the spacer body, outer clamping strips located on the left and right sides of the side protection strips, and a connecting plate portion that connects the spacer body, the side protection strips, and the outer clamping strips into a whole; the spacer body is embedded inside the first plastic body and is located between the upper row of terminal plastic parts and the lower row of terminal plastic parts; the outer clamping strips are inserted into the second plastic body in a suspended manner and the heads thereof extend into the insertion slots.

[0013] Further, the plastic component includes a connecting portion and a tongue portion; the side protection strips are in the shape of three-dimensional flanging strips, covering the left and right side surfaces of the tongue portion and the heads thereof are buried in the first plastic body.

[0014] Further, the side protection strips are formed with armor wrapping portions exposed at the corners of the heads of the tongue portions.

[0015] Further, the second plastic body has a cavity that penetrates through the front and rear, the plastic component is inserted into the cavity from the tail, and the inner wall of the cavity is provided with a limiting surface for restricting the insertion depth of the plastic component; a plugging slot for plugging with a male head is formed in the front section space of the cavity, and a dispensing cavity for forming the waterproof rubber block is formed in the rear section space.

[0016] Further, the metal shell includes a first plate surface covering the upper surface of the second plastic body, a second plate surface covering the left and right side surfaces of the second plastic body, and a third plate surface covering the back surface of the second plastic body and restricting the waterproof rubber block therein; the connecting piece penetrates through the waterproof rubber block and extends to the third plate surface, and the vertical plate portion is exposed on the back surface of the waterproof rubber block and is welded to the third plate surface.

[0017] Further, connecting ear plates extend outward from the left and right sides of the second plastic body, and mounting holes are provided on the connecting ear plates;

[0018] A retaining notch is formed on the second plate surface, and retaining protrusions that are clamped into the retaining notch to cooperate for positioning are provided on the left and right side surfaces of the second plastic body;

[0019] A fourth plate surface covering the back surface of the connecting ear plate is further provided on the second plate surface, a protective gasket that is folded forward 180 degrees and adheres to cover the periphery of the mounting hole is provided at the free end of the fourth plate surface, and a through hole corresponding to the mounting hole is provided on the fourth plate surface.

[0020] Compared with the prior art, the beneficial effects of a Type-C female socket connector of the present utility model are as follows: the manufacturing cost is reduced, the structural position stability of the middle spacer in the connector is improved, and the service life is long.

[0021] Specifically:

[0022] (1) By welding the upper and lower grounding pieces together with the middle isolation piece, the upper row terminal plastic part, the lower row terminal plastic part and the middle isolation piece are clamped into an integral structure to obtain the first component. The first component is integrally placed into an injection mold for injection molding to obtain the plastic component, effectively ensuring the relative position stability between components and improving product quality;

[0023] (2) The middle isolation piece is formed by stamping to integrate a shielding piece, an outer card strip for snap - positioning on the outer periphery of the male connector plastic part, and a side protection strip for snap - positioning on the inner wall of the mating slot of the male connector, forming an integrated multi - functional middle isolation piece, further reducing the number of components and lowering the manufacturing cost;

[0024] (3) A connecting piece is extended backward at the rear side of the middle isolation piece, and a vertical plate part is formed at the end. The vertical plate part extends all the way to the metal shell and is welded to the metal shell to achieve fixed connection, greatly improving the position stability of the middle isolation piece during the frequent mating process of the female and male connectors and increasing the service life of the connector;

[0025] (4) By adding a grounding piece and laying the grounding piece in the non - functional section of the tongue part of the plastic component, on the one hand, the wear resistance of the non - functional area of the tongue part is greatly improved, thereby increasing the service life of the connector; on the other hand, the left and right sides of the grounding piece are welded to the middle isolation piece, and the tail of the middle isolation piece is welded to the metal shell, thereby realizing the electrical connection between the grounding piece and the metal shell to achieve the grounding function; both the upper and lower surfaces of the grounding piece are exposed, so that when the male connector is inserted, the grounding structure at the male connector end can contact the surface of the grounding piece at the female connector end of this solution to achieve grounding, greatly improving the safety of the electrical connection of the connector.

Description of the Drawings

[0026] Figure 1 It is a schematic assembly structure diagram of an embodiment of the present utility model;

[0027] Figure 2 It is an exploded structure diagram of an embodiment of the present utility model;

[0028] Figure 3 It is a schematic assembly structure diagram of the plastic component in an embodiment of the present utility model;

[0029] Figure 4 It is an exploded structure diagram of the plastic component in an embodiment of the present utility model;

[0030] Figure 5 It is a schematic structure diagram of the first component in an embodiment of the present utility model;

[0031] Figure 6 This is a schematic structural diagram of the isolation sheet in the embodiment of the present utility model;

[0032] Figure 7 This is a schematic assembly structure diagram of the metal shell and the second plastic part in the embodiment of the present utility model;

[0033] Figure 8 This is a schematic structural diagram of the metal shell in the embodiment of the present utility model;

[0034] Figure 9 This is a schematic back structure diagram of the assembly of the second plastic part and the plastic component in the embodiment of the present utility model;

[0035] The numbers in the figure represent:

[0036] 100 - Type C female socket connector; 20 - plastic component; 30 - first component;

[0037] 1 - first plastic body, 11 - connecting part, 12 - tongue part, 121 - functional section, 122 - transition section;

[0038] 2 - upper row terminal plastic part;

[0039] 3 - middle isolation sheet, 31 - isolation sheet body, 32 - side protection strip, 321 - armor wrapping part, 33 - outer clamping strip, 34 - connecting plate part, 35 - connecting piece, 351 - vertical plate part;

[0040] 4 - second plastic body, 41 - insertion slot, 42 - cavity, 43 - annular mounting boss, 44 - connecting ear plate, 441 - mounting hole, 45 - stop protrusion;

[0041] 5 - metal shell, 51 - first plate surface, 52 - second plate surface, 521 - anti - retreat port, 53 - third plate surface, 54 - fourth plate surface, 541 - protective gasket;

[0042] 6 - waterproof rubber block; 7 - grounding sheet; 8 - waterproof sealing ring; 9 - lower row terminal plastic part.

Specific implementation manner

[0043] Embodiment 1:

[0044] Please refer to Figures 1-9, this embodiment is a Type-C female socket connector 100, which includes a first plastic body 1, an upper row terminal plastic part 2, a lower row terminal plastic part 9 and a middle isolation piece 3 that are injection-molded with the first plastic body 1 into a plastic component 20, a second plastic body 4 that encloses the plastic component 20, a metal shell 5 that covers the outer periphery of the second plastic body 4, and a waterproof rubber block 6 that fills the tail of the second plastic body 4. A plugging groove 41 for plugging with a male head is jointly formed between the front side inside the second plastic body 4 and the plastic component 20.

[0045] The first plastic body 1 includes a connecting part 11 and a tongue part 12. The tongue part 12 includes a functional section 121 that realizes electrical connection and is located at the front end, and a transition section 122 that is located between the functional section 121 and the connecting part 11. The thickness and width of the transition section 122 are both greater than those of the functional section 121. Part of the length section of the upper row terminal plastic part 2 is exposed on the upper surface of the functional section 121, and part of the length section of the lower row terminal plastic part is exposed on the lower surface of the functional section 121 to realize electrical connection with the male head.

[0046] During the frequent plugging and unplugging with the male head, in order to prevent the transition section 122 from being excessively worn and affecting the normal use of the connector, resulting in a reduced service life, and at the same time to improve the safety of the electrical connector, this embodiment further includes a grounding piece 7 that is integrally injection-molded with the first plastic body 1. The grounding piece 7 is exposed and provided on the upper surface and / or the lower surface of the transition section 122. By covering the upper surface and / or the lower surface of the transition section 122 with the exposed grounding piece 7, the surface of the transition section 122 becomes more wear-resistant, effectively reducing the wear on the surface of the transition section 122 and improving the service life of the connector. The head of the grounding piece 7 is thinned and buried in the first plastic body 1 to prevent the grounding piece 7 from warping, and the rear side of the grounding piece 7 is fixed in the plastic of the connecting part 11. Since the grounding piece 7 is made of metal, it has a signal shielding effect while playing a protective role.

[0047] The upper row terminal plastic part 2 includes upper row terminals and an upper insulating block injection-molded with the upper row terminals; the lower row terminal plastic part 9 includes lower row terminals and a lower insulating block injection-molded with the lower row terminals.

[0048] After the upper row terminal plastic part 2 and the lower row terminal plastic part 9 are respectively injection molded, the two are buckled and assembled together up and down. The middle isolation sheet 3 is clamped between the upper row terminal plastic part 2 and the lower row terminal plastic part 9 to obtain the second assembly; then the upper and lower grounding sheets 7 are respectively assembled on the upper surface and the lower surface of the second assembly, and the left and right sides of the two grounding sheets 7 are welded to the middle isolation sheet 3. The upper row terminal plastic part 2 is clamped and fixed by the welding connection between the upper grounding sheet 7 and the middle isolation sheet 3, and the lower row terminal plastic part 9 is clamped and fixed by the welding connection between the lower grounding sheet 7 and the middle isolation sheet 3 to obtain an integral structure, that is, the first assembly 30; finally, the first assembly 30 is placed in an injection mold, and the first plastic body 1 is injection molded to obtain the plastic assembly 20.

[0049] In this embodiment, the middle isolation sheet 3 is an integrally stamped structure, and includes an isolation sheet body 31, side protection strips 32 located on the left and right sides of the isolation sheet body 31, outer clamping strips 33 located on the left and right sides of the side protection strips 32, and a connecting plate portion 34 connecting the isolation sheet body 31, the side protection strips 32 and the outer clamping strips 33 into a whole. The isolation sheet body 31 is embedded inside the first plastic body 1 and is located between the upper row terminal plastic part 2 and the lower row terminal plastic part, playing a role in signal shielding. The side protection strips 32 are in a three-dimensional flanging strip shape, covering the left and right side surfaces of the tongue portion 12 of the first plastic body 1 and the heads are buried in the first plastic body 1. The side protection strips 32 form an exposed armor wrapping portion 321 at the head corner of the tongue portion 12, forming an effective anti-wear protection for the head corner of the tongue portion 12. When inserting into the male head, it effectively prevents the plastic from wearing and shedding powder. The outer clamping strips 33 are inserted into the second plastic body 4 and the heads are suspended in the insertion slot 41, clamping the inserted male head and improving the insertion and extraction force after the female connector and the male head are inserted.

[0050] The second plastic body 4 is obtained by injection molding through a corresponding injection mold. The second plastic body 4 has a cavity 42 that penetrates through the front and back. The plastic assembly 20 is inserted into the cavity 42 from the tail to realize the assembly of the two. The inner wall of the cavity 42 is provided with a limiting surface (not marked in the figure) for limiting the insertion depth of the plastic assembly 20. After the plastic assembly 20 is assembled into the second plastic body 4, an insertion slot 41 for inserting into the male head is formed in the front section space of the cavity 42, and a dispensing cavity (not marked in the figure) for forming the waterproof rubber block 6 is formed in the rear section space. By injecting waterproof glue into the dispensing cavity and curing, the waterproof rubber block 6 is obtained.

[0051] The front side of the second plastic body 4 is provided with an annular mounting boss 43 distributed around the periphery of the insertion slot 41, and a waterproof sealing ring 8 is provided on the annular mounting boss 43.

[0052] On the left and right sides of the second plastic body 4, connecting ear plates 44 extend outward. Mounting holes 441 are provided on the connecting ear plates 44 for fixedly mounting the female connector base of this embodiment as a whole to an electronic device.

[0053] The metal shell 5 includes a first plate surface 51 covering the upper surface of the second plastic body 4, a second plate surface 52 covering the left and right side surfaces of the second plastic body 4, and a third plate surface 53 covering the back surface of the second plastic body 4 and restricting the waterproof rubber block 6 therein.

[0054] A back-off port 521 is formed on the second plate surface 52. Positioning protrusions 45 that are snapped into the back-off port 521 for cooperation to achieve positioning are provided on the left and right side surfaces of the second plastic body 4. The cooperation between the positioning protrusions 45 and the back-off port 521 strengthens the positioning and fixing of the metal shell 5 relative to the second plastic body 4 in the insertion direction.

[0055] The second plate surface 52 is further provided with a fourth plate surface 54 covering the back surface of the connecting ear plate 44. A protective gasket 541 that is folded forward by 180 degrees and then adheres to cover the periphery of the mounting hole 441 is provided at the free end of the fourth plate surface 54. A through hole corresponding to the mounting hole 441 is provided on the fourth plate surface 54 to enhance the wear resistance after the connecting ear plate 44 is mounted to the electronic device, and at the same time further strengthens the positioning effect of the metal shell 5 relative to the second plastic body 4 in the insertion direction.

[0056] In order to ensure the position stability of the middle spacer 3 in the plastic component 20 and at the same time achieve the grounding connection of the grounding piece 7, a pair of connecting pieces 35 are provided at the rear side of the connecting plate portion 34 and extend backward. A vertical plate portion 351 is formed at the free end of the connecting piece 35. The connecting piece 35 penetrates through the waterproof rubber block 6 and extends to the third plate surface 53. The vertical plate portion 351 is exposed on the back surface of the waterproof rubber block 6 and is welded to the third plate surface 53, greatly improving the position stability of the middle spacer 3 in the plastic component 20; at the same time, the grounding piece 7 is welded to the middle spacer 3 on the left and right sides to achieve electrical connection and fixed connection, and the middle spacer 3 is welded to the metal shell 5 at the tail to achieve electrical connection. Furthermore, the grounding piece 7 and the metal shell 5 are electrically connected, and the grounding effect of the grounding piece 7 is achieved by grounding the metal shell 5.

[0057] For those of ordinary skill in the art, without departing from the inventive concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model.

Claims

1. A Type-C female socket connector, characterized in that: It includes a first plastic body (1), a first component (30) injection-molded with the first plastic body (1) into a plastic component (20), a second plastic body (4) surrounding the plastic component (20), a metal shell (5) covering the outer periphery of the second plastic body (4), and a waterproof rubber block (6) filled at the tail of the second plastic body (4); a plug-in groove (41) is formed jointly around between the second plastic body (4) and the plastic component (20); the first component (30) includes an upper row of terminal plastic parts (2) and a lower row of terminal plastic parts (9) stacked on top of each other, a middle isolation sheet (3) clamped between the upper row of terminal plastic parts (2) and the lower row of terminal plastic parts (9), and a grounding sheet (7) attached to the upper surface of the upper row of terminal plastic parts (2) and the lower surface of the lower row of terminal plastic parts (9) and welded to the middle isolation sheet (3) on both left and right sides.

2. The Type-C female socket connector according to claim 1, characterized in that: A connecting piece (35) extends backward from the middle isolation sheet, and a vertical plate portion (351) is formed at the free end of the connecting piece (35), and the vertical plate portion (351) is welded to the metal shell (5).

3. The Type-C female socket connector according to claim 1, characterized in that: The plastic component (20) includes a connecting portion (11) and a tongue portion (12), and the tongue portion (12) includes a functional section (121) at the front end and a transition section (122) between the functional section (121) and the connecting portion (11); the thickness and width of the transition section (122) are both greater than those of the functional section (121); the grounding sheet (7) is covered on the upper surface and the lower surface of the transition section (122).

4. The Type-C female socket connector according to claim 1, wherein: The head of the grounding sheet (7) is thinned and buried in the first plastic body (1).

5. The Type-C female socket connector according to claim 1, characterized in that: The middle isolation sheet (3) is integrally formed, and includes an isolation sheet body (31), side protection strips (32) located on both left and right sides of the isolation sheet body (31), outer clamping strips (33) located on both left and right sides of the side protection strips (32), and a connecting plate portion (34) connecting the isolation sheet body (31), the side protection strips (32) and the outer clamping strips (33) into a whole; the isolation sheet body (31) is embedded inside the first plastic body (1) and located between the upper row of terminal plastic parts (2) and the lower row of terminal plastic parts (9); the outer clamping strips (33) are suspended and inserted inside the second plastic body (4) and the heads extend into the plug-in groove (41).

6. The Type C female socket connector according to claim 5, wherein: The plastic component (20) includes a connecting portion (11) and a tongue portion (12); the side protection strips (32) are in a three-dimensional flanging structure, covering the left and right side surfaces of the tongue portion (12) and the heads are buried in the first plastic body (1).

7. The Type-C female socket connector according to claim 6, wherein: The side protection strips (32) form an exposed armor wrapping portion (321) at the head corner of the tongue portion (12).

8. The Type-C female socket connector according to claim 1, wherein: The interior of the second plastic body (4) has a cavity (42) that penetrates from front to back. The plastic component (20) is inserted into the cavity (42) from the tail. A limiting surface for restricting the insertion depth of the plastic component (20) is provided on the inner wall of the cavity (42). A plugging groove (41) for mating with a male head is formed in the front section space of the cavity (42), and a dispensing cavity for forming the waterproof rubber block (6) is formed in the rear section space.

9. The Type C female socket connector according to claim 2, wherein: The metal shell (5) includes a first plate surface (51) covering the upper surface of the second plastic body (4), a second plate surface (52) covering the left and right side surfaces of the second plastic body (4), and a third plate surface (53) covering the back surface of the second plastic body (4) and restricting the waterproof rubber block (6) therein. The connecting piece extends through the waterproof rubber block (6) to the third plate surface (53). The vertical plate portion (351) is exposed on the back surface of the waterproof rubber block (6) and is welded to the third plate surface (53).

10. The Type-C female socket connector according to claim 9, wherein: Connecting ear plates (44) extend outward from the left and right sides of the second plastic body (4), and mounting holes (441) are provided on the connecting ear plates (44). A retaining notch (521) is formed on the second plate surface (52), and retaining protrusions for being snapped into the retaining notch (521) for cooperation to achieve positioning are provided on the left and right side surfaces of the second plastic body (4). A fourth plate surface (54) covering the back surface of the connecting ear plate (44) is further provided on the second plate surface (52). A protective gasket (541) that is folded forward by 180 degrees and adheres to cover the periphery of the mounting hole (441) is provided at the free end of the fourth plate surface (54). A through hole corresponding to the mounting hole (441) is provided on the fourth plate surface (54).

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