Connector plugs and connectors

Abstract

This utility model relates to a connector plug and a connector. The connector plug includes a plug shell and a spring contact. The spring contact is disposed in the plug shell and includes a spring contact body and a scraping portion. A first end of the spring contact body is used to connect a cable, and the scraping portion is disposed at the second end of the spring contact body for contacting a connector socket or circuit board. The thickness of the spring contact body is S1, and the maximum dimension of the scraping portion is S2, wherein S2 ≤ 2S1. The connector plug of this utility model has a smaller impact on TDR impedance, is less likely to cause signal reflection, and helps to ensure the integrity of signal transmission.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, specifically to a connector plug and a connector. Background Technology

[0002] Connectors are used to connect different electronic components in a circuit, thereby establishing signal paths between these components. With technological advancements, data exchange between electronic components is constantly increasing, signal rates are rising, and signal transmission bandwidth is continuously expanding. The electrical properties of connectors, such as TDR impedance, return loss, insertion loss, and crosstalk, have a crucial impact on signal transmission quality. In related technologies, an unreasonable design of the connector's contact springs can affect impedance matching of the TDR impedance and the integrity of signal transmission. Utility Model Content

[0003] This utility model aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, embodiments of this utility model propose a connector plug that has a smaller impact on TDR impedance, is less likely to cause signal reflection, and helps to ensure the integrity of signal transmission.

[0005] An embodiment of this utility model also proposes a connector.

[0006] The connector plug of this utility model embodiment includes: a plug shell and a spring, the spring being disposed in the plug shell, the spring including a spring body and a scraping part, the first end of the spring body being used to connect a cable, the scraping part being disposed at the end of the second end of the spring body being used to contact a connector socket or circuit board, the thickness of the spring body being S1, the maximum size of the scraping part being S2, wherein S2≤2S1.

[0007] According to the connector plug of the present invention, when the scraping part contacts the connector socket or circuit board, the scraping part can scrape off dirt, oxide layer and other debris on the electrical contact surface of the connector socket or circuit board, which is beneficial to improving the stability of the connector plug during electrical contact. In addition, since the scraping part is located at the end of the second end of the spring body, the end of the spring will not have an extra structure of stub, which can reduce the impact on TDR impedance, avoid the antenna radiation effect caused by the stub structure, and avoid the insertion loss problem of the connector, thus ensuring the integrity of signal transmission and improving the electrical performance of the connector.

[0008] In some embodiments, 0.05mm ≤ S1 ≤ 5mm.

[0009] In some embodiments, the scraping portion has a first wall and a second wall opposite to each other in its thickness direction, the first wall being for electrical contact with a connector socket or circuit board, the first wall being a flat surface, and the second wall being smoothly connected to the spring body.

[0010] In some embodiments, the scraping portion has a first wall and a second wall opposite to each other in its thickness direction, the first wall being for electrical contact with a connector socket or circuit board, the first wall being a curved surface convex toward the side opposite to the second wall, and the second wall being smoothly connected to the spring body.

[0011] In some embodiments, the spring is a high-speed spring for transmitting high-speed signals, and the spring body has a weakening portion, the thickness of which is less than the thickness of the region of the spring body adjacent to the weakening portion.

[0012] In some embodiments, there are multiple weakening portions, which are arranged at intervals along the extension direction of the spring body.

[0013] A connector according to another embodiment of the present invention includes a connector plug, the connector plug being the connector plug described in any one of the embodiments of the present invention; and a connector socket, wherein the scraping portion is in electrical contact with the connector socket.

[0014] According to the connector of the present invention, when the scraping part contacts the connector socket, the scraping part can scrape off dirt, oxide layer and other debris on the electrical contact surface of the connector socket or circuit board, which helps to improve the stability of the connector plug during electrical contact. In addition, since the scraping part is located at the end of the second end of the spring body, the end of the spring will not have an extra structure of stub, which can reduce the impact on TDR impedance, avoid the antenna radiation effect caused by the stub structure, and avoid the insertion loss problem of the connector, thus ensuring the integrity of signal transmission and improving the electrical performance of the connector.

[0015] In some embodiments, the connector socket includes a conductive terminal, the conductive terminal including a fixing block and a conductive element, the fixing block having a first side and a second side, the conductive element including a straight section, an inclined section and a main body section, the straight section being located on the first side, a first end of the inclined section being connected to the straight section, a second end of the inclined section being connected to the main body section, the inclined section extending inclinedly away from the second side in a direction from the first end to the second end of the inclined section, and the scraping portion being capable of engaging with one of the straight section and the inclined section.

[0016] In some embodiments, the first side of the fixing block has a stop surface, which is located at one end of the straight section away from the inclined section. The stop surface is arranged orthogonally to the length direction of the straight section, and the scraping part can abut against the stop surface.

[0017] In some embodiments, the end of the straight section opposite to the inclined section extends into the fixing block. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the installation of the connector and circuit board according to an embodiment of the present invention.

[0019] Figure 2 This is a schematic diagram of the connection between the spring of the connector plug and the connector socket according to an embodiment of the present invention.

[0020] Figure 3 This is a schematic diagram of the connection between the spring of the connector plug and the connector socket according to another embodiment of the present invention.

[0021] Figure 4 This is a cross-sectional view of the connector according to an embodiment of the present invention.

[0022] Figure 5 yes Figure 4 A magnified view of A in the middle.

[0023] Figure 6 This is a schematic diagram of the conductive terminals of the connector according to an embodiment of the present invention.

[0024] Figure label:

[0025] 100. Connector plug; 101. Plug housing; 102. Spring contact; 1021. Spring contact body; 10211. Weakening part; 1022. Scraping part; 10221. First wall surface; 10222. Second wall surface;

[0026] 200. Connector socket; 201. Conductive terminal; 2011. Fixing block; 20111. Stop surface; 2012. Conductive component; 20121. Straight section; 20122. Inclined section; 20123. Main body section; 202. Socket housing;

[0027] 300. Cable;

[0028] 400. Circuit board. Detailed Implementation

[0029] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0030] The following is a reference appendix. Figures 1 to 6 This invention describes a connector plug and a connector according to embodiments of the present invention.

[0031] like Figures 1 to 3 As shown, the connector plug 100 of this utility model embodiment includes: a plug shell 101 and a spring 102. The spring 102 is disposed on the plug shell 101. The spring 102 includes a spring body 1021 and a scraping part 1022. The first end of the spring body 1021 is used to connect the cable 300. The scraping part 1022 is disposed at the end of the second end of the spring body 1021. The scraping part 1022 is used to contact the connector socket 200 or the circuit board 400. The thickness of the spring body 1021 is S1, and the maximum size of the scraping part 1022 is S2, wherein S2≤2S1.

[0032] According to an embodiment of the present invention, when the scraping part 1022 contacts the connector socket 200 or the circuit board 400, the scraping part 1022 can scrape off dirt, oxide layers, and other debris on the electrical contact surface of the connector socket 200 or the circuit board 400, which helps to improve the stability of the connector plug 100 during electrical contact. In addition, since the scraping part 1022 is located at the end of the second end of the spring body 1021, the end of the spring 102 will not have an extra structure of stub, which can reduce the impact on TDR impedance, avoid the antenna radiation effect caused by the stub structure, and avoid the insertion loss problem of the connector, thus ensuring the integrity of signal transmission and improving the electrical performance of the connector.

[0033] It is understandable that the maximum size of the scraping part 1022 is the maximum extension length of the contact surface of the scraping part 1022. When the connector plug 100 is inserted, the contact position between the scraping part 1022 and the gold fingers on the connector socket 200 or circuit board 400 will change. Specifically, the initial contact position between the scraping part 1022 and the gold fingers is M, and the final contact position is F. The distance from M to F is the maximum size S2 of the scraping part 1022.

[0034] Since S2≤2S1, the end of the spring piece 102 will not have a redundant stub structure, avoiding the antenna radiation effect caused by the stub structure and the insertion loss problem of the connector. At the same time, it can improve the integrity of signal transmission and improve the electrical performance of the connector.

[0035] The inventors of this application also discovered through experimental research that in a non-closed open structure spring 102 (i.e., a spring 102 with a stub), a residual stub is left when the spring 102 contacts the gold finger. As the frequency of the transmitted signal increases, the signal wavelength λ decreases. When the length L of the stub is ≥ 1 / 4λ, the stub will cause signal resonance, directly affecting the electrical performance of the connector and limiting the maximum operating frequency of the high-speed connector. Therefore, in the embodiment of this utility model, the connector plug 100 has a scraping part 1022 located at the end of the spring 102, which can effectively prevent the stub effect, ensure the integrity of signal transmission, and improve the electrical performance of the connector.

[0036] Optionally, 0.05mm ≤ S1 ≤ 5mm. It is understood that the thickness of the spring body 1021 is selected within the range of 0.05mm-5mm. For example, the thickness of the spring body 1021 can be 0.05mm, 0.1mm, 0.5mm, 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, or 5mm. By selecting the thickness of the spring body 1021 within the above range, the connector plug 100 of this embodiment can meet the usage requirements of the spring 102 of most connectors, and the electrical contact effect is good.

[0037] In one example, such as Figure 2 As shown, the scraping part 1022 has a first wall surface 10221 and a second wall surface 10222 opposite to each other in its thickness direction. The first wall surface 10221 is used for electrical contact with the connector socket 200 or the circuit board 400. The first wall surface 10221 is a flat surface, and the second wall surface 10222 is smoothly connected to the spring body 1021. It can be understood that the second wall surface 10222 is smoothly connected to the outer wall surface of the spring body 1021 without bending. The first wall surface 10221 is a flat surface, which can improve the stability of the electrical contact between the scraping part 1022 and the gold finger, and because the first wall surface 10221 is a flat surface, it is convenient to process and manufacture the position of the scraping part 1022.

[0038] In another example, the scraping part 1022 has a first wall 10221 and a second wall 10222 opposite to each other in its thickness direction. The first wall 10221 is used for electrical contact with the connector socket 200 or the circuit board 400. The first wall 10221 is a curved surface convex away from the second wall 10222. The second wall 10222 is smoothly connected to the spring body 1021. Because the first wall 10221 is a curved surface convex away from the second wall 10222, the resistance when the scraping part 1022 slides relative to the electrical contact surface of the connector socket 200 can be reduced, improving the user's feel when plugging and unplugging.

[0039] For example, such as Figure 3As shown, the scraping part 1022 has a rounded chamfer to form a curved second wall surface 10222. The radius of the rounded chamfer can be designed according to the thickness of the spring piece 102, and this utility model does not limit it in this regard.

[0040] In other examples, the second wall 10222 may also be a wavy structure, or a structure combining curved and straight surfaces. This invention does not specifically limit the structure of the second wall 10222.

[0041] Optionally, such as Figure 3 and Figure 5 As shown, the spring 102 is a high-speed spring for transmitting high-speed signals. The spring body 1021 has a weakening portion 10211, and the thickness of the weakening portion 10211 is less than the thickness of the area of ​​the spring body 1021 adjacent to the weakening portion 10211.

[0042] It should be noted that the area of ​​the spring body 1021 adjacent to the weakening portion 10211 is the area where the spring 102 can undergo elastic deformation when the connector plug 100 is inserted or removed. It is understood that the area of ​​the spring body 1021 adjacent to the weakening portion is not the area where the spring 102 connects to the cable. By reducing the thickness of the weakening portion 10211 in the connector plug 100 of this embodiment, the elastic force of the high-speed spring is reduced, and it is less easily detected by high-frequency signals, thus not affecting the electrical performance of the high-speed spring.

[0043] It is understandable that, in order to meet the specific electrical performance requirements of the connector, the spring 102 needs to be designed with a specific structure, which inevitably leads to mechanical performance issues. If the spring force of a single spring 102 is too large, the insertion feel of the connector will be poor, and it may even easily damage the circuit board 400. In order to reduce the spring force of the spring 102, it is necessary to reduce the width or thickness of the spring 102. The connector plug 100 of this embodiment of the present invention reduces the spring force of the spring 102 by setting the reduction of the spring 102 on the spring body 1021, which can reduce the spring force of the spring 102, improve the user's feel when inserting and removing the connector, and have little impact on the electrical performance of the spring 102.

[0044] The inventors of this invention discovered through experimental research that the overall elasticity of the spring piece 102 is related to the material, width, thickness, and length of the metal. When the material and length are optimized to their maximum extent, the elasticity can only be reduced by changing the thickness and width of the spring piece 102. The formula for calculating the elasticity of the spring piece 102 shows that its elasticity is linearly related to its width and cubically related to its thickness. That is, to reduce the same elasticity, the change in the thickness of the spring piece 102 needs to be much smaller than the change in its width. Therefore, the connector plug 100 of this embodiment of the invention can significantly reduce the elasticity of the spring piece 102 by slightly reducing the thickness at the weakening portion 10211, and it is less likely to be detected by high-frequency signals, thus not affecting the electrical performance of the spring piece 102.

[0045] Optionally, such as Figure 3 and Figure 5 As shown, there are multiple weakening portions 10211, which are arranged at intervals along the extension direction of the spring body 1021. This further reduces the elastic force of the spring 102 and improves the user's feel when inserting and removing the connector. The distance between adjacent weakening portions 10211 can be designed according to the operating frequency of the spring 102 or the manufacturing process of the spring 102, and this utility model does not limit this.

[0046] like Figures 4 to 6 As shown, the connector according to another embodiment of the present invention includes a connector plug 100 and a connector socket 200. The connector plug 100 is the connector plug 100 of the present invention, and the scraping part 1022 is in electrical contact with the connector socket 200.

[0047] According to the connector of the present invention, when the scraping part 1022 contacts the connector socket 200, the scraping part 1022 can scrape off dirt, oxide layer and other debris on the electrical contact surface of the connector socket 200, which is beneficial to improving the stability of the electrical contact between the connector plug 100 and the socket. In addition, since the scraping part 1022 is located at the end of the second end of the spring body 1021, the end of the spring 102 will not have an extra structure of stub, which can reduce the impact on TDR impedance, avoid the antenna radiation effect caused by the stub structure, and avoid the insertion loss problem of the connector, thus ensuring the integrity of signal transmission and improving the electrical performance of the connector.

[0048] Optionally, such as Figures 4 to 6As shown, the connector socket 200 includes a conductive terminal 201 and a socket housing 202. The conductive terminal 201 is disposed inside the socket housing 202. The conductive terminal 201 includes a fixing block 2011 and a conductive element 2012. The fixing block 2011 has a first side and a second side. The conductive element 2012 includes a straight section 20121, an inclined section 20122 and a main body section 20123. The straight section 20121 is located on the first side. The first end of the inclined section 20122 is connected to the straight section 20121, and the second end of the inclined section 20122 is connected to the main body section 20123. In the direction from the first end of the inclined section 20122 to the second end of the inclined section 20122, the inclined section 20122 extends obliquely in a direction away from the second side. The scraping part 1022 can cooperate with one of the straight section 20121 and the inclined section 20122.

[0049] According to the connector of the present invention, in the direction from the first end of the inclined segment 20122 to the second end of the inclined segment 20122, the inclined segment 20122 gradually extends in an inclined direction away from the second side. When the spring 102 of the connector plug 100 gradually approaches the conductive terminal 201, the end of the spring 102 (scraping part 1022) can slide to the position of the straight segment 20121 under the guidance of the inclined segment 20122. This makes the contact position difference between each spring 102 and the conductive element 2012 smaller, which is beneficial to TDR impedance control. On the other hand, since the conductive element 2012 adopts the structural design of "straight segment 20121 + inclined segment 20122", the initial insertion force of the spring 102 is smaller and the final insertion force is larger. This can utilize the inertia of the user when manually inserting to improve the feel of the connector during insertion and removal.

[0050] It is understandable that the electrical contact surface on the straight section 20121 is a plane, and the electrical contact surface on the inclined section 20122 is an inclined surface. The electrical contact surface of the conductive component 2012 adopts a "plane + inclined surface" structural design, so that even if the spring 102 does not reach the straight section 20121, the spring 102 can still contact the inclined section 20122, thereby avoiding the problem of open circuit and poor contact between the spring 102 and the conductive terminal 201.

[0051] Compared to the related technologies where "the electrical contact surfaces of the conductive element 2012 are all planar", the electrical contact surfaces of the conductive element 2012 in the embodiment of this utility model are "planar + inclined". The end of the spring 102 is finally guided to the straight section 20121 by the inclined section 20122. This ensures that the positive insertion force of the spring 102 into the straight section 20121 of the conductive terminal 201 is not reduced. Furthermore, since the electrical contact surface on the straight section 20121 is smaller than that in the related technologies, the difference in contact position between each spring 102 and the conductive element 2012 is smaller, which is beneficial for TDR impedance control and thus improves the electrical performance of the connector.

[0052] Optionally, such as Figure 5 and Figure 6 As shown, the first side of the fixing block 2011 has a stop surface 20111, which is located at one end of the straight section 20121 away from the inclined section 20122. The stop surface 20111 is arranged orthogonally to the length direction of the straight section 20121, and the scraping part 1022 can abut against the stop surface 20111. It can be understood that the stop surface 20111 is arranged perpendicular to the end face of the straight section 20121. When the spring 102 is inserted into the connector socket 200, the end of the spring 102 (scraping part 1022) abuts against the end face of the straight section 20121 and against the stop surface 20111. This limits the end of the spring 102 (scraping part 1022), thereby further reducing the difference in the contact position between the spring 102 and the straight section 20121. That is, multiple springs 102 of the connector plug 100 abut against the straight sections 20121 of different conductive parts 2012 at approximately the same position, which is beneficial to the TDR impedance control of the connector and improves the electrical performance of the connector.

[0053] like Figure 5 and Figure 6 As shown, one end of the straight section 20121, away from the inclined section 20122, extends into the fixing block 2011, thereby fixing the straight section 20121 and improving the stability of the connection between the conductive component 2012 and the fixing block 2011. For example, the fixing block 2011 is an injection-molded plastic block, and the fixing block 2011 and the conductive component 2012 are installed together by injection molding, which improves the stability of the conductive terminal 201 structure and facilitates manufacturing.

[0054] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0055] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0056] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0057] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0058] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0059] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A connector plug (100), characterized in that, include: Plug housing (101); A spring (102) is disposed on the plug housing (101). The spring (102) includes a spring body (1021) and a scraping part (1022). The first end of the spring body (1021) is used to connect a cable (300). The scraping part (1022) is disposed at the end of the second end of the spring body (1021) and is used to contact a connector socket (200) or a circuit board (400). The thickness of the spring body (1021) is S1, and the maximum size of the scraping part (1022) is S2, wherein S2≤2S1.

2. The connector plug (100) according to claim 1, characterized in that, 0.05mm≤S1≤5mm.

3. The connector plug (100) according to claim 1, characterized in that, The scraping part (1022) has a first wall surface (10221) and a second wall surface (10222) opposite each other in its thickness direction. The first wall surface (10221) is used for electrical contact with the connector socket (200) or the circuit board (400). The first wall surface (10221) is a flat surface. The second wall surface (10222) is smoothly connected to the spring body (1021).

4. The connector plug (100) according to claim 1, characterized in that, The scraping part (1022) has a first wall surface (10221) and a second wall surface (10222) opposite each other in its thickness direction. The first wall surface (10221) is used for electrical contact with the connector socket (200) or the circuit board (400). The first wall surface (10221) is a curved surface that protrudes away from the second wall surface (10222). The second wall surface (10222) is smoothly connected to the spring body (1021).

5. The connector plug (100) according to any one of claims 1-4, characterized in that, The spring (102) is a high-speed spring for transmitting high-speed signals. The spring body (1021) has a weakening portion (10211), and the thickness of the weakening portion (10211) is less than the thickness of the area of ​​the spring body (1021) adjacent to the weakening portion (10211).

6. The connector plug (100) according to claim 5, characterized in that, There are multiple weakening parts (10211), and the multiple weakening parts (10211) are arranged at intervals along the extension direction of the spring body (1021).

7. A connector, characterized in that, include: A connector plug (100), wherein the connector plug (100) is the connector plug (100) according to any one of claims 1-6; Connector socket (200), the scraping part (1022) is in electrical contact with the connector socket (200).

8. The connector according to claim 7, characterized in that, The connector socket (200) includes a conductive terminal (201), the conductive terminal (201) including a fixing block (2011) and a conductive element (2012), the fixing block (2011) having a first side and a second side, the conductive element (2012) including a straight section (20121), an inclined section (20122) and a main body section (20123), the straight section (20121) being located on the first side, and the first end of the inclined section (20122) being... Connected to the straight section (20121), the second end of the inclined section (20122) is connected to the main body section (20123). In the direction from the first end of the inclined section (20122) to the second end of the inclined section (20122), the inclined section (20122) extends obliquely in a direction away from the second side. The scraping part (1022) can cooperate with one of the straight section (20121) and the inclined section (20122).

9. The connector according to claim 8, characterized in that, The first side of the fixing block (2011) has a stop surface (20111), which is located at one end of the straight section (20121) away from the inclined section (20122). The stop surface (20111) is arranged orthogonally to the length direction of the straight section (20121), and the scraping part (1022) can abut against the stop surface (20111).

10. The connector according to claim 8, characterized in that, The straight section (20121) extends into the fixed block (2011) from the end opposite to the inclined section (20122).

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