Electric connector

Abstract

An electric connector comprises a shielding shell; the insulating body is fixedly arranged in the shielding shell and is provided with extension parts which extend backwards from the left side and the right side of the rear end of the insulating body and a coating part which is connected between the tail ends of the two extension parts and extends downwards; the plurality of contact terminals are arranged in the insulating body, and the rear ends of the contact terminals extend out of the insulating body and then are coated by the coating part; the extending part is provided with an upper side surface and a lower side surface which are opposite to each other, the coating part is provided with an inner wall and an outer wall which are opposite to each other and two opposite side surfaces, the rear end of the lower side surface obliquely extends to form the side surface, and a chamfer angle is formed at the joint of the lower side surface and the side surface. The left side and the right side of the wrapping part are each provided with a reinforcing block formed by forwards extending the inner wall.

Description

Technical Field

[0001] The utility model relates to an electrical connector, and more particularly to an electrical connector with a stable structure and good air tightness. Background Art

[0002] See also Figures 13 to 16 A conventional electrical connector 100' includes a shielding shell 60', an insulating body 70' secured within the shielding shell 60', and a plurality of contact terminals 21' disposed within the insulating body 70'. The rear end of the insulating body 70' extends rearward to form a fixing portion 15', which is configured to secure the contact terminals 21'. The insulating body 70', the shielding shell 60', and the fixing portion 15' collectively define a space S50' filled with a sealant 50' to enhance the waterproofness and sealing properties of the electrical connector 100'.

[0003] See also Figure 16 In order to match the shape of the contact terminal 21', the fixing portion 15' is provided with a horizontally extending extension portion 11' and a covering portion 12' extending vertically downward from the extension portion 11'. Figure 14 As shown, the lower surface 111' of the extension 11' and the inner edge 61' of the shielding shell 60' further define a gap S51' within the space S50'. When the width of the gap S51' decreases to a certain threshold, a siphoning effect is generated on the sealant near the gap S51'. The narrower the gap S51', the greater the suction force on the sealant 50'. Therefore, the sealant 50 applied to the rear surface 62' of the shielding shell 60' is easily drawn into the gap S51', forming a gap between the insulating body 70' and the shielding shell 60', thereby reducing the airtightness and waterproofing of the electrical connector 100'.

[0004] Therefore, it is necessary to provide an electrical connector with good airtightness and a stable structure. Summary of the Invention

[0005] The purpose of the present invention is to provide an electrical connector, comprising: a shielding shell; an insulating body, fixedly arranged in the shielding shell, and provided with extensions extending backward from the left and right sides of the rear end of the insulating body and a covering portion connected between the ends of the two extensions and extending downward; and a plurality of contact terminals, arranged in the insulating body, the rear ends of the contact terminals extending out of the insulating body and being covered by the covering portion; and wherein the extension portion has opposite upper and lower side surfaces and opposite inner and outer sides, and the covering portion has opposite inner and outer walls and opposite two side surfaces. The rear end of the lower side surface of the extension portion extends obliquely to form the side surface of the covering portion, and the connection between the lower side surface and the side surface forms a bevel angle, and the left and right sides of the covering portion are respectively provided with a reinforcement block formed by extending forward from the inner wall of the covering portion, and the reinforcement block is provided with an outer surface, a front connecting surface and a bottom connecting surface, and the outer surface of the reinforcement block is formed by extending forward from the top of the side surface, and the front connecting surface, the bottom connecting surface and the outer surface are perpendicular to each other and form a right angle with the front end of the bottom of the reinforcement block, and the bottom connecting surface is flush with the lower edge of the inner wall.

[0006] In some embodiments, the rear end of the lower side surface of the extension portion extends obliquely to form the front connecting surface of the reinforcement block, and a chamfered angle is formed at the connection between the lower side surface and the front connecting surface.

[0007] In some embodiments, the forward extending length of the reinforcement block is less than half of the rearward extending length of the extension portion.

[0008] In some embodiments, the rear end of the insulating body is provided with a plurality of upper protrusions and lower protrusions arranged alternately up and down, wherein the upper surface of the extension portion is flush with the bottom edge of the upper protrusion, and the lower edge of the lower protrusion is lower than the lower surface of the extension portion.

[0009] As mentioned above, the electrical connector of the present invention has the advantage of a stable structure, and the structure of the electrical connector increases the gap between the lower surface of the extension part and the inner edge of the shielding shell, thereby reducing the suction force of the gap on the sealant applied on the rear surface of the shielding shell, thereby avoiding the problems of uneven distribution and cracking of the sealant, and improving the airtightness of the electrical connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to make the above and other purposes, features, advantages and embodiments of the present invention more obvious and easy to understand, the content of this case can be better understood when read in conjunction with the accompanying drawings.

[0011] Figure 1 It is an exploded view of the electrical connector of the present utility model.

[0012] Figure 2 It is a three-dimensional diagram of the electrical connector of the utility model from another perspective.

[0013] Figure 3 It is an exploded view of the terminal module of the electrical connector of the present invention.

[0014] Figure 4 It is an exploded view of the terminal module of the electrical connector of the present invention.

[0015] Figure 5 It is a three-dimensional diagram of the insulating body of the electrical connector of the present invention.

[0016] Figure 6 It is a rear view of the electrical connector of the present invention.

[0017] Figure 7 The utility model electric connector is along Figure 6 Partial cross-sectional view of line II.

[0018] Figure 8 It is a right side view of the insulating body of the electrical connector of the present invention.

[0019] Figure 9 The insulating body of the utility model electric connector is along Figure 8 Cross-sectional view along line II-II.

[0020] Figure 10 It is a partial cross-sectional view of the terminal module of the electrical connector of the present utility model.

[0021] Figure 11 It is a three-dimensional diagram of the terminal module of the electrical connector of the present invention from another perspective.

[0022] Figure 12 The terminal module of the utility model electric connector is along Figure 11 A partial enlarged view of part X.

[0023] Figure 13 It is a rear view of a conventional electrical connector.

[0024] Figure 14 The conventional electrical connector is along Figure 13 Partial cross-sectional view along line III-III.

[0025] Figure 15 It is a three-dimensional diagram of an insulating body of a conventional electrical connector.

[0026] Figure 16 It is a partial cross-sectional view of an insulating body of a conventional electrical connector. DETAILED DESCRIPTION

[0027] To further illustrate the technical content, structural features, objectives, and functions of the electrical connector of the present invention, the following examples are provided with accompanying drawings for detailed description. In this embodiment, the electrical connector 100 of the present invention is a Type-C connector. In practice, the electrical connector 100 of the present invention may also be other types of connectors.

[0028] See also Figures 1 to 4 The electrical connector 100 of the present invention includes a shielding shell 60, wherein the shielding shell 60 defines a housing space, a terminal module 10 housed in the housing space, and a sealant 50 applied to the rear end of the terminal module 10 to seal the gap between the terminal module 10 and the shielding shell 60. Furthermore, the terminal module 10 further includes an insulating body 70 formed by in-mold molding, a contact terminal group 20 assembled and combined by in-mold molding, a center piece 30 disposed in the center of the contact terminal group 20, and two shielding pieces 40 disposed at the upper and lower ends of the rear edge of the insulating body 70, respectively.

[0029] See also Figures 5 to 7 The insulating body 70 has a rearward-extending extension 11 on each of its left and right sides. A downward-extending covering 12 is connected between the two extensions 11. The covering 12, the rear end of the insulating body 70, and the shielding shell 60 collectively define a space S50, within which the sealant 50 is applied. The sealant 50 extends beyond the inner edge 61 of the shielding shell 60 and covers the rear surface 62 surrounding the inner edge 61.

[0030] See also Figure 7 and Figure 12 The rear end of the lower surface 111 of the extension portion 11 extends obliquely to form the side surface 121 of the covering portion 12. The connection between the lower surface 111 and the side surface 121 forms a chamfered angle A1. The lower surface 111 and the inner edge 61 further define a gap S51 in the space S50.

[0031] See also Figure 8 and Figure 9In this embodiment, the rear end of the insulating body 70 is provided with a plurality of upper protrusions 13 and lower protrusions 14 arranged in an alternating pattern. The upper surface 112 of the extension 11 is flush with the bottom edge of the upper protrusions 13, while the lower surface 111 of the extension 11 is lower than the upper edge of the lower protrusions 14. Furthermore, the lower edge of the lower protrusion 14 is lower than the lower surface 111. Therefore, compared to conventional electrical connector structures, the distance S11 between the upper surface 112 and the lower surface 111 in the present invention is shortened, increasing the width of the gap S51. This reduces the siphoning effect of the gap S51 on the sealant 50, thereby preventing the sealant 50 from being drawn into the gap S51.

[0032] See also Figure 10 The contact terminal assembly 20 includes a plurality of contact terminals 21. The front ends of the contact terminals 21 are fixedly mounted within the insulating body 70. The rear ends of the contact terminals 21 extend out of the insulating body 70 and are then enclosed by the covering portion 12. The covering portion 12 has an inner wall 122 and an outer wall 123 that are opposed to each other. The inner wall 122 is formed by extending from the inner surface of the extension portion 11, and the outer wall 123 is formed by extending from the outer surface of the extension portion 11. The rear ends of the contact terminals 21 extend between the inner wall 122 and the outer wall 123 of the covering portion 12.

[0033] like Figure 11 and Figure 12 As shown, in this embodiment, a reinforcement block 124 is provided on each of the left and right sides of the covering portion 12, formed by the inner wall 122 of the covering portion 12 extending forward. The forward extension length of the reinforcement block 124 is less than half the rearward extension length of the extension portion 11. The outer surface of the reinforcement block 124 is formed by the top of the side surface 121 extending forward, and the reinforcement block 124 is provided with a front connecting surface 124a and a bottom connecting surface 124b. The front connecting surface 124a is connected between the front end of the outer surface and the front end of the inner surface of the reinforcement block 124, and the bottom connecting surface 124b is connected between the bottom of the outer surface and the bottom of the inner surface of the reinforcement block 124. The front connecting surface 124a, the bottom connecting surface 124b, and the outer surface are perpendicular to each other and form a right angle A2 with the bottom front end of the reinforcement block 124. The front connecting surface 124 a is formed by obliquely extending from the rear end of the lower surface 111 , and a chamfered angle A3 is formed at the connection between the front connecting surface 124 a and the lower surface 111 , while the bottom connecting surface 124 b is flush with the lower edge of the inner wall 122 .

[0034] See also Figures 7 to 12To prevent uneven distribution of the sealant 50 due to a siphon effect, the present invention shortens the distance S11 between the upper surface 112 and the lower surface 111 and provides a chamfered angle A1 to enlarge the gap S51. Furthermore, a chamfered angle A3 is provided between the front connecting surface 124a and the lower surface 111, and a reinforcement block 124 is provided at the front end of the inner wall 122 to ensure the structural stability of the extension portion 11. Therefore, the present invention reduces the siphon effect on the sealant 50 by increasing the width of the gap S51, thereby preventing uneven distribution and cracking of the sealant 50. Ultimately, the space S50 between the rear end of the insulating body 70 and the shielding shell 60 is securely sealed, thereby improving the airtightness of the electrical connector 100.

[0035] In summary, the electrical connector 100 of the present invention shortens the distance S11 between the upper surface 112 and the lower surface 111 of the extension portion 11, and provides the chamfered angles A1 and A3 and the reinforcement block 124 between the extension portion 11 and the covering portion 12. While ensuring structural reliability, this increases the gap S51 between the lower surface 111 and the inner edge 61. This reduces the siphoning effect and suction force of the sealant 50 by the gap S51, allowing the sealant 50 to be more evenly distributed. This improves the airtightness of the electrical connector 100 and enhances its waterproofing performance. Therefore, the electrical connector 100 of the present invention possesses the advantages of structural stability and excellent airtightness.

[0036] Although the present invention has been disclosed above with reference to the embodiments, they are not intended to limit the present invention. Anyone with ordinary skill in the art may make slight changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. An electrical connector, characterized in that: The invention comprises: a shielding shell; an insulating body, fixedly arranged in the shielding shell, and provided with an extension portion extending backward from the left and right sides of the rear end of the insulating body and a covering portion connected between the ends of the two extension portions and extending downward; and a plurality of contact terminals, arranged in the insulating body, the rear ends of the contact terminals extending out of the insulating body and being covered by the covering portion; and wherein the extension portion is provided with opposite upper and lower side surfaces and opposite inner and outer sides, the covering portion is provided with opposite inner and outer walls and opposite two side surfaces, and the extension portion is provided with opposite inner and outer walls and opposite two side surfaces. The rear end of the lower side surface extends obliquely to form the side surface of the covering portion, and the connection between the lower side surface and the side surface forms a bevel angle. The left and right sides of the covering portion are respectively provided with a reinforcement block formed by extending forward from the inner wall of the covering portion, and the reinforcement block is provided with an outer surface, a front connecting surface and a bottom connecting surface. The outer surface of the reinforcement block is formed by extending forward from the top of the side surface, and the front connecting surface, the bottom connecting surface and the outer surface are perpendicular to each other and form a right angle with the front end of the bottom of the reinforcement block, and the bottom connecting surface is flush with the lower edge of the inner wall.

2. The electrical connector according to claim 1, wherein: The rear end of the lower side surface of the extension portion extends obliquely to form the front connection surface of the reinforcement block, and a chamfered angle is formed at the connection between the lower side surface and the front connection surface.

3. The electrical connector according to claim 1, wherein: The forward extending length of the reinforcing block is less than half of the rearward extending length of the extending portion.

4. The electrical connector according to claim 1, wherein: The rear end of the insulating body is provided with a plurality of upper and lower protrusions arranged alternately up and down, wherein the upper surface of the extension portion is aligned with the bottom edge of the upper protrusion, and the lower edge of the lower protrusion is lower than the lower surface of the extension portion.

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