Electrical connector

Abstract

The utility model discloses an electric connector, include: shell, and transmission module is connected to the shell, and transmission module includes terminal subassembly, and terminal subassembly includes terminal and insulating part, and the terminal includes the plug -in section and fixed section who links to each other, and fixed section is fixed to insulating part and is at least partially wrapped by insulating part, and the plug -in section includes plug -in section front end and the plug -in section body of column, and one end of plug -in section body is connected to plug -in section front end and the other end is connected to fixed section, and the side of plug -in section front end is the curvature surface of gradual change, and plug -in section front end includes the guide portion for guiding the plug -in of terminal and the guide transition portion for guiding terminal and being connected with guide portion. Accordingly, the electric connector is required to plug -in and is less to facilitate the insertion of butt connector, improves the blind insertion alignment, ensures the stable contact area and the even current distribution, guarantees the integrity of signal and promotes the high -frequency signal transmission performance.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment, and more specifically to an electrical connector, particularly a cable connector. Background Technology

[0002] Cable connectors, as common circuit transmission components, are widely used in various electronic products. They typically transmit signals or current through electrical contact between male and female terminals. Currently, the commonly used male terminals generally have flat insertion sections with prominent metal elastic arms designed to ensure electrical connection performance. However, during use, repeated insertion and removal or overload pressure can cause deformation of the metal elastic arms, resulting in poor contact. Furthermore, flat contact surfaces are prone to fretting wear in vibrating environments, leading to increased contact resistance. Moreover, flat terminals require precise matching to the female interface slot; even slight misalignment can cause insertion damage and poor self-alignment accuracy. In addition, with the development and widespread application of AI technology, the requirements for the transmission rate of cable connectors are higher. High-speed transmission generates high heat, and current cable connectors have poor heat dissipation performance, which can even cause damage. Utility Model Content

[0003] To overcome the aforementioned deficiencies in the prior art, this utility model provides an electrical connector, comprising: a housing; and a transmission module connected to the housing. The transmission module includes a terminal assembly, which includes terminals and an insulating member. Each terminal includes a plug-in section and a fixed section connected to each other. The fixed section is fixed to the insulating member and at least partially enclosed by the insulating member. The plug-in section includes a plug-in section front end and a columnar plug-in section body. One end of the plug-in section body is connected to the plug-in section front end and the other end is connected to the fixed section. The side of the plug-in section front end is a gradually curving surface, and the plug-in section front end includes a guide portion for guiding the insertion of the terminals and a guide transition portion connected to the guide portion for guiding the terminals. Accordingly, the electrical connector requires less insertion force for insertion into mating connectors, improving blind mating alignment, ensuring a stable contact area and uniform current distribution, guaranteeing signal integrity, and improving high-frequency signal transmission performance.

[0004] Furthermore, the guide transition portion includes a guide segment and a connecting segment connected to each other, the connecting segment being positioned between the guide portion and the guide segment. Accordingly, the guiding effect on the terminals can be further improved.

[0005] Furthermore, the front end of the insertion segment is bullet-shaped. This maximizes the ease of insertion of the electrical connector and increases the contact area.

[0006] Furthermore, a gradually expanding connection portion is provided at the junction of the plug-in section and the fixed section, the gradually expanding connection portion being used to disperse the stress between the plug-in section and the fixed section.

[0007] Furthermore, the plug-in segment body is cylindrical, the fixing segment is flat and strip-shaped, and the gradually widening connection includes an inclined surface, wherein the inclined surface is connected to the flat surface of the flat and strip-shaped fixing segment, and the angle between the inclined surface and the flat surface is an obtuse angle. Accordingly, the connection strength between the plug-in segment and the fixing segment can be strengthened, thereby preventing the connection between the plug-in segment and the fixing segment from breaking.

[0008] Furthermore, the insulating element includes at least one heat dissipation through-hole to expose a portion of the fixing section. This enables rapid heat dissipation from the terminal, thereby preventing damage to the cable connector.

[0009] Furthermore, the fixing section includes a front fixing part, a middle fixing part, and a rear fixing part connected to each other. The front fixing part is adjacent to the insertion section, wherein the front fixing part, the middle fixing part, and the rear fixing part are arranged in a stepped manner on one side surface of the fixing section. Accordingly, impedance adjustment of the terminal can be achieved.

[0010] Furthermore, on the opposite side surface of the fixing section to the first side surface, the intermediate fixing portion has a raised / lower portion. This improves the connection strength between the fixing section of the terminal and the insulation. Additionally, the width of the intermediate fixing portion is greater than the width of the front fixing portion. This makes it easier for the insulator to wrap around the terminal during injection molding and improves pull-out resistance. Furthermore, the thickness of the rear fixing portion is less than the thickness of the intermediate fixing portion. This provides space for the connection between the terminal and the cable, thereby miniaturizing the terminal assembly.

[0011] Furthermore, the fixing section includes a front fixing part, a middle fixing part, and a rear fixing part connected to each other. The front fixing part is adjacent to the plug-in section. The insulating member includes a first insulating part and a second insulating part that are separate from each other. The front fixing part and the middle fixing part are at least partially enclosed by the first insulating part, and the rear fixing part is at least partially enclosed by the second insulating part. The hardness of the first insulating part is greater than that of the second insulating part. This split-type insulating structure ensures both fixing strength and facilitates the release of cable strain. Moreover, because the injection pressure and temperature of the second insulating part are relatively low, cable damage can be prevented.

[0012] Furthermore, the first insulating portion includes at least one heat dissipation through-hole formed through the top or bottom of the first insulating portion, thereby exposing the top or bottom surface of the intermediate fixing portion. The thickness of the portion of the first insulating portion at the top or bottom forming the heat dissipation through-hole gradually increases in the direction from the front end to the rear end of the terminal. Accordingly, compared to a conventional through-hole heat dissipation structure, the stepped heat dissipation structure reduces temperature rise, thereby improving heat dissipation performance. Attached Figure Description

[0013] The accompanying drawings are provided to further illustrate the present invention and constitute a part of the present invention. The illustrative embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings: Figure 1 This is a schematic perspective view of the electrical connector of this utility model; Figure 2 This is a schematic perspective view of the terminal assembly of this utility model; Figure 3 This is a schematic side view of the terminal of the present invention; Figure 4 It is shown schematically. Figure 3 A partial enlarged view of the terminal shown; Figure 5 It is shown schematically. Figure 3 A perspective view of the terminals shown; Figure 6 The diagram schematically shows a side view of the differential signal terminal pair of this invention; and Figure 7 This is an exploded view schematically showing the terminal assembly of the present invention.

[0014] List of reference numerals

[0015] 100 electrical connectors

[0016] 1. Shell

[0017] 2. Transmission Module

[0018] 21-terminal assembly

[0019] 211 terminal

[0020] 211A Plug-in Section

[0021] 211A1 Connector Section Body

[0022] 211A2 Connector Front End

[0023] 211B Fixed Section

[0024] 211B1 Front Fixing Part

[0025] 211B2 Intermediate fixing part

[0026] 211B3 Rear Fixing Part

[0027] 212 Insulating components

[0028] 212A First Insulation Section

[0029] 212B Second Insulation Section

[0030] S slope

[0031] B. Concave and convex parts

[0032] H heat dissipation holes

[0033] P differential signal terminal pair Detailed Implementation

[0034] The technical solutions of the embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0035] In the following detailed description, reference is made to the accompanying drawings, which form a part of this specification, in which specific embodiments of the present invention are illustrated by way of example. Regarding the drawings, directional terms such as “top,” “bottom,” “inner,” “outer,” “upper,” “lower,” “front,” and “rear” are used with reference to the orientation of the drawings described. Since the components of the embodiments of the present invention can be positioned in many different orientations, the directional terms are for illustrative purposes only and are not intended to be limiting. It should be understood that other embodiments can be used, and structural or logical changes can be made without departing from the scope of the present invention. Therefore, the following detailed description should not be construed as limiting, and the present invention is defined by the appended claims.

[0036] refer to Figure 1 This utility model proposes an electrical connector 100, which generally includes a housing 1 and a transmission module 2 connected to the housing 1, such as one or more transmission modules 2. The transmission module 2 may include terminal assemblies 21, such as a single terminal assembly 21 or multiple terminal assemblies 21 arranged side by side.

[0037] like Figure 2 As shown, the terminal assembly 21 may include a terminal 211 and an insulating member 212. Figure 2The diagram illustrates a terminal assembly 21 comprising two terminals 211 connected to the same insulator 212. In this case, the two terminals 211 can be a differential signal terminal pair P. However, the invention is not limited to this; for example, the terminal assembly 21 may also comprise only one terminal 211. In such a case, the terminal 211 can be a ground terminal.

[0038] like Figure 3 As shown, terminal 211 may include a plug-in segment 211A and a fixed segment 211B connected to each other. The fixed segment 211B is fixed to and at least partially enclosed by the insulating member 212. Plug-in segment 211A may include a plug-in segment front end 211A2 and a columnar plug-in segment body 211A1. One end of the plug-in segment body 211A1 is connected to the plug-in segment front end 211A2 and the other end is connected to the fixed segment 211B. The side surface of the plug-in segment front end 211A2 is a gradually curving surface, and the plug-in segment front end 211A2 includes a guide portion 211A21 for guiding the insertion of terminal 211 and a guide transition portion connected to the guide portion for guiding terminal 211.

[0039] It should be noted that the gradual curvature surface of the front end 211A2 of the insertion section refers to the different curvatures of the outer surface of the front end 211A2 of the insertion section, and the curvature values ​​change smoothly. Specifically, the curvature values ​​of the guide portion 211A21 and the guide transition portion change smoothly. This gradual curvature surface is used to achieve a smooth transition and dispersion of insertion stress, eliminating the stress concentration problem inherent in traditional right-angle or conical structures, thereby significantly improving the fatigue life and reliability of the connector terminals. In addition, it also has better guiding ability, effectively reducing the insertion and extraction friction, impact force and flow resistance of the terminals.

[0040] Specifically, the guide transition section includes a guide segment 211A22 and a connecting segment 211A23 connected to each other, with the connecting segment 211A23 positioned between the guide section 211A21 and the guide segment 211A22. More specifically, the front end 211A2 of the insertion segment is bullet-shaped. This shape of the front end 211A2 of the insertion segment is particularly advantageous for achieving the aforementioned effects.

[0041] In one embodiment, a gradually expanding connection portion may be provided at the junction of the plug segment 211A and the fixed segment 211B. This gradually expanding connection portion is used to disperse the stress between the plug segment 211A and the fixed segment 211B. Specifically, the plug segment body 211A1 is cylindrical, and the fixed segment 211B may be flat and strip-shaped. In other words, the fixed segment 211B extends as a long strip along its length direction, having two relatively wide flat surfaces (i.e., top and bottom surfaces) and two relatively narrow side surfaces. The bullet-shaped front end 211A2 of the plug segment and the cylindrical shape of the plug segment body 211A1 can reduce the insertion force and facilitate insertion into the interface of the mating connector, improve blind mating alignment, ensure a stable contact area and uniform current distribution, and guarantee signal integrity to improve high-frequency signal transmission performance. The flat shape of the fixed segment 211B can enhance its stability and holding force inside the insulator and prevent loosening. More specifically, the expanding connection may include a beveled surface S, which connects to the flat surface of the flat strip-shaped fixing segment 211B, and the angle between the beveled surface S and the flat surface is an obtuse angle. This arrangement of the expanding connection strengthens the connection between the insert segment and the fixing segment, thereby preventing the connection between the insert segment and the fixing segment from breaking. Figure 5 As shown, two inclined planes S can be provided. Of course, this utility model is not limited to this; for example, one inclined plane S or more inclined planes S, such as three, four, etc., can also be provided.

[0042] like Figure 2 As shown, the insulating member 212 may include at least one heat dissipation through-hole H to expose a portion of the fixing section 211B. The heat dissipation through-hole H may be positioned to expose the top or bottom surface of the intermediate fixing portion 211B2 of the fixing section 211B. Of course, the number and location of the heat dissipation through-hole H are not limited to this; for example, although... Figure 2 A heat dissipation through-hole H (e.g., located on the top of the insulating member 212) is shown. Figure 2 The two heat dissipation holes (H) on the left side of the middle, but in Figure 2 The bottom of the insulating member 212 shown may also be provided with a heat dissipation through hole H. Furthermore, the heat dissipation through hole H may also be positioned to expose the concave-convex portion B of the intermediate fixing part 211B2 of the fixing section 211B, such as... Figure 2 The two heat dissipation holes H on the right side of the component are formed by removing a portion of the side of the insulating component 212.

[0043] In one embodiment, the plug segment 211A and the fixing segment 211B are integrated. Of course, the present invention is not limited to this; for example, the plug segment 211A and the fixing segment 211B can also be manufactured separately and assembled together.

[0044] In one embodiment, the fixing segment 211B may include a protrusion B formed on its side surface. The protrusion B may be disposed at any position on either side surface of the fixing segment 211B. For example, the protrusion B may be disposed on the side surface of the intermediate fixing portion 211B2, particularly adjacent to the front fixing portion 211B1 and / or the rear fixing portion 211B3. Alternatively, the protrusion B may also be disposed on the side surfaces of the front fixing portion 211B1 and / or the rear fixing portion 211B3.

[0045] It should be noted that the concave-convex portion B mentioned in this article refers to a barb-like structure formed by alternating concave and convex portions. For example, the ratio between the distance from a protrusion in the concave-convex portion B on one side surface of the fixed segment 211B to the distance from a concave portion B to the other side surface of the fixed segment 211B can be 1:0.7.

[0046] In one embodiment, the fixing segment 211B may include a front fixing portion 211B1, a middle fixing portion 211B2, and a rear fixing portion 211B3 connected to each other, with the front fixing portion 211B1 adjacent to the insertion segment 211A. On one side surface of the fixing segment 211B, the front fixing portion 211B1, the middle fixing portion 211B2, and the rear fixing portion 211B3 may be arranged in a stepped manner. For example, there may be a gradient difference between the side surface of the front fixing portion 211B1 and the side surface of the middle fixing portion 211B2, and a gradient difference between the side surface of the middle fixing portion 211B2 and the side surface of the rear fixing portion 211B3, this gradient difference being in the range of 0.15 mm to 0.25 mm. This stepped arrangement of the fixing segment 211B enables impedance adjustment of the terminals.

[0047] Specifically, on the opposite side surface of the fixing section 211B, opposite to the first side surface, the intermediate fixing portion 211B2 has a protrusion / contour B, thereby improving the connection strength between the fixing section of the terminal and the insulation. The width of the intermediate fixing portion 211B2 can be greater than the width of the front fixing portion 211B1, thereby making it easier for the insulator to wrap around the terminal during injection molding and improving pull-out resistance. The thickness of the rear fixing portion 211B3 can be less than the thickness of the intermediate fixing portion 211B2. Since the rear fixing portion 211B3 is used for connection with the cable, reducing the thickness of the rear fixing portion 211B3 provides installation space for the cable, thus eliminating the need to increase the overall thickness of the cable assembly 21.

[0048] In one embodiment, such as Figure 6As shown, the terminal assembly 21 may include two terminals 211 arranged in a mirror-symmetrical manner, which are a differential signal terminal pair P. The top or bottom surfaces of the two terminals 211 are coplanar with each other, and the inner surfaces of the two terminals 211 face each other. In particular, the fixing segment 211B of each of the two terminals 211 (i.e., the differential signal terminal pair P) includes a front fixing portion 211B1, a middle fixing portion 211B2, and a rear fixing portion 211B3 connected to each other, wherein the front fixing portion 211B1 is adjacent to the insertion segment 211A, and the front fixing portion 211B1, the middle fixing portion 211B2, and the rear fixing portion 211B3 are arranged in a stepped manner on the inner surface of the fixing segment 211B of each of the two terminals 211 opposite to the other terminal 211. Furthermore, on the outer side of the fixing section 211B of each of the two terminals 211, opposite to the inner side, the intermediate fixing part 211B2 has a concave-convex part B.

[0049] In one embodiment, such as Figure 7 As shown, the insulating member 212 may include a first insulating portion 212A and a second insulating portion 212B that are separate from each other. Specifically, the front fixing portion 211B1 and the middle fixing portion 211B2 may be at least partially enclosed by the first insulating portion 212A, and the rear fixing portion 211B3 may be at least partially enclosed by the second insulating portion 212B. This split insulating structure ensures both fixing strength and facilitates the release of cable strain. The first insulating portion 212A has a higher hardness than the second insulating portion 212B; for example, the first insulating portion 212A may be made of a hard plastic material to ensure fixing strength, while the second insulating portion 212B may be made of a soft plastic material to facilitate the release of cable strain. Since the rear fixing portion 211B3 is used for connection with the cable, the second insulating portion 212B is manufactured to be relatively soft to protect the cable from damage during injection molding.

[0050] Furthermore, the first insulating portion 212A may include at least one heat dissipation through-hole H formed through the top or bottom of the first insulating portion 212A, so as to expose the top or bottom surface of the intermediate fixing portion 211B2, wherein, for example Figure 2 As shown, the thickness of the portion forming the heat dissipation through-hole H at the top or bottom of the first insulating portion 212A gradually increases in the direction from the front end to the rear end of the terminal 211. Accordingly, a stepped baffle structure is formed around the heat dissipation through-hole H. This stepped baffle structure can reduce the temperature rise, thereby improving the heat dissipation performance.

[0051] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An electrical connector, characterized in that, The electrical connector (100) includes: Casing (1); and A transmission module (2) is connected to the housing (1). The transmission module (2) includes a terminal assembly (21), which includes terminals (211) and an insulating member (212). The terminals (211) include plug-in sections (211A) and fixing sections (211B) that are connected to each other. The fixing section (211B) is fixed to the insulating member (212) and is at least partially enclosed by the insulating member (212). The plug-in segment (211A) includes a plug-in segment front end (211A2) and a columnar plug-in segment body (211A1). One end of the plug-in segment body (211A1) is connected to the plug-in segment front end (211A2), and the other end is connected to the fixed segment (211B). The side of the front end (211A2) of the plug segment is a gradually curvature surface, and the front end (211A2) of the plug segment includes a guide part (211A21) for guiding the plugging of the terminal (211) and a guide transition part connected to the guide part for guiding the terminal (211).

2. The electrical connector according to claim 1, characterized in that, The guide transition section includes a guide segment (211A22) and a connecting segment (211A23) that are connected to each other, and the connecting segment (211A23) is positioned between the guide section (211A21) and the guide segment (211A22).

3. The electrical connector according to claim 2, characterized in that, The front end (211A2) of the plug section is bullet-shaped.

4. The electrical connector according to any one of claims 1 to 3, characterized in that, A gradually expanding connection portion is provided at the junction of the plug-in section (211A) and the fixed section (211B), the gradually expanding connection portion being used to disperse the stress between the plug-in section (211A) and the fixed section (211B).

5. The electrical connector according to claim 4, characterized in that, The plug-in section body (211A1) is cylindrical, the fixing section (211B) is flat and strip-shaped, and the gradually expanding connecting part includes an inclined surface (S), wherein the inclined surface (S) is connected to the flat surface of the flat and strip-shaped fixing section (211B), and the angle between the inclined surface (S) and the flat surface is an obtuse angle.

6. The electrical connector according to any one of claims 1 to 3, characterized in that, The insulating element (212) includes at least one heat dissipation through-hole (H) to expose a portion of the fixed section (211B).

7. The electrical connector according to any one of claims 1 to 3, characterized in that, The fixing section (211B) includes a front fixing part (211B1), a middle fixing part (211B2), and a rear fixing part (211B3) connected to each other. The front fixing part (211B1) is adjacent to the insertion section (211A). On one side surface of the fixing section (211B), the front fixing part (211B1), the middle fixing part (211B2), and the rear fixing part (211B3) are arranged in a stepped manner.

8. The electrical connector according to claim 7, characterized in that, On the other side surface of the fixed section (211B) opposite to the one side surface, the intermediate fixed part (211B2) has a concave-convex part (B), and / or The width of the intermediate fixing part (211B2) is greater than the width of the front fixing part (211B1), and / or The thickness of the rear fixing part (211B3) is less than the thickness of the middle fixing part (211B2).

9. The electrical connector according to claim 1, characterized in that, The fixing section (211B) includes a front fixing part (211B1), a middle fixing part (211B2), and a rear fixing part (211B3) connected to each other. The front fixing part (211B1) is adjacent to the plug-in section (211A). The insulating member (212) includes a first insulating part (212A) and a second insulating part (212B) separated from each other. The front fixing part (211B1) and the middle fixing part (211B2) are at least partially covered by the first insulating part (212A), and the rear fixing part (211B3) is at least partially covered by the second insulating part (212B). The hardness of the first insulating part (212A) is greater than that of the second insulating part (212B).

10. The electrical connector according to claim 9, characterized in that, The first insulating portion (212A) includes at least one heat dissipation through-hole (H) formed through the top or bottom of the first insulating portion (212A) to expose the top or bottom surface of the intermediate fixing portion (211B2), wherein the thickness of the portion of the top or bottom of the first insulating portion (212A) forming the heat dissipation through-hole (H) gradually increases in the direction from the front end of the terminal (211) toward the rear end.

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