Cable assembly

Abstract

The application discloses a cable assembly, relates to the technical field of signal testing, and comprises a shell, a rotating piece, a first cable and a second cable. The shell is provided with a mounting cavity. At least part of the rotating piece is arranged in the mounting cavity and is rotatable relative to the shell. The rotating piece penetrates a conductive channel. The outer surface of the rotating piece comprises an arc surface. At least part of the first cable is arranged in the mounting cavity and located at one side of the rotating piece. Each of the first cable and the second cable comprises a cladding layer and an inner conductor. One end of the cladding layer of the first cable is attached to the arc surface of the rotating piece to drive the rotating piece to rotate. At least part of the second cable is arranged in the mounting cavity and located at the other side of the rotating piece. The inner conductor of the first cable and the inner conductor of the second cable respectively extend into the conductive channel and are conductively connected. The cable assembly has a long bending service life, can reduce the failure probability of the cable assembly, and ensures the testing progress.

Description

Technical Field

[0001] The present application relates to the technical field of signal testing, and in particular to a cable assembly. Background Art

[0002] An SMA coaxial cable consists of a cable and an SMA connector. One end of the cable connects to the test instrument via the SMA connector, and the other end connects to the device under test via a connector, thereby performing high-frequency signal integrity testing on the device under test. In related technologies, the connection between the SMA connector and the cable is a fixed connection, which has low flexibility and is prone to stress concentration after repeated bending. Currently, the bending life of the connection between the SMA connector and the cable is short, and most failures occur at the connection point between the SMA connector and the cable, resulting in inaccurate signal integrity testing and delays in testing progress. Summary of the Invention

[0003] The present application provides a cable assembly to at least solve the problem in the related art that the end of the cable close to the SMA connector is prone to bending failure, resulting in inaccurate signal integrity testing and thus delaying the test progress.

[0004] The present application provides a cable assembly, comprising a housing, a rotating member, a first cable and a second cable, wherein the housing has an installation cavity, and the installation cavity is provided with openings at two opposite ends arranged in a first direction;

[0005] At least a portion of the rotating member is disposed in the mounting cavity and is rotatable relative to the housing, the rotating member has a conductive channel extending therethrough along the first direction, and an outer surface of the rotating member includes a curved surface; at least a portion of the first cable is located in the mounting cavity and on one side of the rotating member in the first direction, each of the first cable and the second cable includes a coating and an inner conductor, the coating is provided on the outer circumference of the inner conductor, one end of the coating of the first cable is in contact with the curved surface of the rotating member and its shape is adapted to drive the rotating member to rotate; at least a portion of the second cable is located in the mounting cavity and on the other side of the rotating member in the first direction, the inner conductor of the first cable and the inner conductor of the second cable respectively extend into the conductive channel and are conductively connected, an end of the first cable away from the rotating member is used to connect to the device under test, and an end of the second cable away from the rotating member is used to connect to the test instrument.

[0006] Through the present application, when the cable assembly needs to be bent, the first cable rotates relative to the second cable under the action of an external force, and then the friction between the first cable and the rotating part drives the rotating part to rotate relative to the shell, thereby realizing the bending of the cable assembly; since the rotating part has an arc-shaped surface, the rotation flexibility of the rotating part relative to the shell is relatively high, that is, the end of the cable assembly close to the SMA connector has high flexibility when performing the bending action, and the cable assembly is not easy to be damaged after repeated bending, thereby extending the bending life of the cable assembly, reducing the probability of failure at the connection position of the cable assembly and the SMA connector, improving the accuracy of the signal integrity test, and ensuring the test progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] In order to more clearly illustrate the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0008] Figure 1 A schematic diagram of the overall structure of a cable assembly provided in an embodiment of the present application;

[0009] Figure 2 A planar cross-sectional view of a cable assembly provided in an embodiment of the present application;

[0010] Figure 3 A three-dimensional cross-sectional view of a cable assembly provided in an embodiment of the present application;

[0011] Figure 4 for Figure 2 Enlarged schematic diagram of point A in the middle.

[0012] The above drawings include the following reference numerals:

[0013] 100. Cable assembly;

[0014] 1. Housing; 11. Mounting cavity; 111. First opening; 112. Second opening; 113. First cavity section; 114. Second cavity section; 115. Third cavity section; 116. First step surface; 117. Second step surface;

[0015] 2. Rotating parts; 21. Conductive channels;

[0016] 3. First cable; 31. Inner conductor; 32. Insulation layer; 33. Shielding layer; 331. Silver-plated copper mesh layer; 332. Aluminum foil Mylar tape layer; 333. Buffer layer; 34. Outer layer;

[0017] 4. Second cable; 41. Lubrication gap;

[0018] 5. Support member; 51. Inner ring; 511. Arc surface of inner ring; 52. Outer ring;

[0019] 6. Elastic parts;

[0020] 7. Casing; 71. First pipe section; 72. Second pipe section; 73. Thermoplastic layer; 74. Memory alloy layer;

[0021] 8. Cylindrical filling block;

[0022] 9. Elastic expansion components. DETAILED DESCRIPTION

[0023] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0024] It should be noted that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like, indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely for ease of description and simplification of the present application. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present application. The terms "mounted," "connected," and "connected" should be interpreted broadly, and may include, for example, fixed, removable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. The terms "parallel," "perpendicular," and "equal" encompass the described conditions and conditions similar to the described conditions, provided that the range of the similar conditions is within an acceptable range of deviation, as determined by a person of ordinary skill in the art taking into account the measurement in question and the errors associated with the measurement of the particular quantity (i.e., the limitations of the measurement system). For example, "parallel" includes both absolute parallelism and approximate parallelism, where the acceptable deviation range for approximate parallelism may be, for example, within 5°; "perpendicular" includes both absolute perpendicularity and approximate perpendicularity, where the acceptable deviation range for approximate perpendicularity may also be, for example, within 5°. "Equal" includes both absolute equality and approximate equality, where the acceptable deviation range for approximate equality may be, for example, that the difference between the two is less than or equal to 5% of either. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0025] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0026] like Figures 1 to 3As shown, an embodiment of the present application provides a cable assembly 100, including a housing 1, a rotating member 2, a first cable 3 and a second cable 4. The housing 1 has an installation cavity 11, and the installation cavity 11 is provided with openings at both ends arranged opposite to each other in a first direction; at least a portion of the rotating member 2 is provided in the installation cavity 11 and is rotatable relative to the housing 1, the rotating member 2 has a conductive channel 21 extending through the first direction, and the outer surface of the rotating member 2 includes an arc-shaped surface; at least a portion of the first cable 3 is located in the installation cavity 11 and is located on one side of the rotating member 2 in the first direction, and the first cable 3 and the second cable 4 are located in the installation cavity 11. Each of the cables includes a covering layer and an inner conductor 31. The covering layer is provided on the outer peripheral side of the inner conductor 31. One end of the covering layer of the first cable 3 is in contact with the arc-shaped surface of the rotating member 2 and is adapted in shape to drive the rotating member 2 to rotate. At least a portion of the second cable 4 is located in the installation cavity 11 and on the other side of the rotating member 2 in the first direction. The inner conductor 31 of the first cable 3 and the inner conductor 31 of the second cable 4 respectively extend into the conductive channel 21 and are conductively connected. The end of the first cable 3 away from the rotating member 2 is used to connect to the device under test, and the end of the second cable 4 away from the rotating member 2 is used to connect to the test instrument.

[0027] Specifically, the inner conductor 31 of the first cable 3 and the inner conductor 31 of the second cable 4 are conductively connected, and the end of the first cable 3 away from the rotating part 2 is connected to the device under test (such as a server motherboard, 5G communication equipment, aerospace electronic equipment, etc.) through a connector, and the end of the second cable 4 away from the rotating part 2 is connected to the test instrument (such as an oscilloscope) through an SMA connector. The shell of the SMA connector is connected to the end of the housing 1 away from the first cable 3, and the center terminal of the SMA connector is conductively connected to the inner conductor 31 of the second cable 4, thereby realizing signal transmission between the test instrument and the device under test to perform high-frequency signal integrity testing on the device under test.

[0028] In the cable assembly 100 of the embodiment of the present application, a rotating part 2 is provided between the first cable 3 and the second cable 4. When the cable assembly 100 needs to be bent, the first cable 3 rotates relative to the second cable 4 under the action of an external force, and then the rotating part 2 is driven to rotate relative to the shell 1 under the action of the friction between the first cable 3 and the rotating part 2, thereby realizing the bending of the cable assembly 100; since the rotating part 2 has an arc-shaped surface, the rotating part 2 has high flexibility in the rotation movement relative to the shell 1, that is, the end of the cable assembly 100 close to the SMA connector has high flexibility when performing a bending movement, and the cable assembly 100 is not easily damaged after repeated bending, thereby extending the bending life of the cable assembly 100, reducing the probability of failure at the connection position of the cable assembly 100 and the SMA connector, improving the accuracy of the signal integrity test, and ensuring the test progress.

[0029] like Figure 2 and Figure 3As shown, the coating layer is coated on the outer circumference of the inner conductor 31, and the inner conductor 31 is formed by twisting 7×0.08 mm silver-plated copper wires; the coating layer includes an insulating layer 32, a shielding layer 33 and an outer layer 34 arranged in sequence from the inside to the outside.

[0030] The insulating layer 32 is used to physically isolate the inner conductor 31 from the external environment, ensuring that current flows only along the designed path, reducing energy loss and signal interference. The insulating layer 32 is made of Teflon (polytetrafluoroethylene), which has a dielectric constant of 2.1 and a dielectric loss tangent (tanδ) value of less than 0.0003. This can reduce energy loss in signal transmission, improve test accuracy, and is more suitable for high-frequency signal integrity testing.

[0031] The shielding layer 33 is used to shield interference signals and ensure the quality of signal transmission. The shielding layer 33 has a three-layer structure, including a silver-plated copper mesh layer 331, an aluminum foil Mylar tape layer 332 and a buffer layer 333 arranged from the inside to the outside. The silver-plated copper mesh layer 331 is made of a silver-plated copper mesh with a coverage rate of 96%, the aluminum foil Mylar tape layer 332 is made of aluminum foil Mylar tape, and the buffer layer 333 is made of conductive silicone.

[0032] The outer layer 34 is used to protect the first cable 3 and the second cable 4. The outer layer 34 is made of polyurethane material. When ASTM D4060 is used as the wear resistance standard, the wear resistance grade of the polyurethane material is H18, which can achieve a good protective effect.

[0033] In some embodiments, as Figure 2 and Figure 3 As shown, the rotating member 2 is a sphere, the end surface of the coating layer of the first cable 3 facing the rotating member 2 is an arc surface, and the end surface of the coating layer of the second cable 4 facing the rotating member 2 is an arc surface and is loosely matched with the outer surface of the rotating member 2.

[0034] In some embodiments, the gap between the end surface of the coating layer of the second cable 4 facing the rotating member 2 and the outer surface of the rotating member 2 is filled with grease.

[0035] Specifically, if Figure 2 and Figure 3 As shown, the end face of the coating of the first cable 3 facing the rotating member 2 is a spherical surface, the diameter of the spherical surface is equal to the diameter of the sphere, and the spherical surface fits the outer surface of the sphere. As a result, the first cable 3 fits tightly against the outer surface of the sphere, so that the friction between the end face of the coating of the first cable 3 and the outer surface of the sphere is relatively large. When the first cable 3 rotates relative to the second cable 4 under the action of an external force, the sphere can be driven to rotate relative to the shell 1 under the action of the friction force, thereby improving the bending flexibility of the cable assembly 100 and extending its bending life.

[0036] In other embodiments, the end surface of the coating of the first cable 3 facing the rotating member 2 can also be fixedly connected to the outer surface of the sphere, for example, by bonding, to ensure that when the first cable 3 rotates relative to the second cable 4 under the action of external force, it can drive the sphere to rotate relative to the shell 1.

[0037] like Figure 2 and Figure 3 As shown, the end surface of the coating of the second cable 4 facing the rotating member 2 is also spherical. This spherical surface is concentrically aligned with the outer surface of the rotating member 2, and the gap between them forms a lubrication gap 41, which is filled with grease. The grease in lubrication gap 41 reduces friction during the rotation of the sphere, increasing its flexibility and further enhancing the bending flexibility of the cable assembly 100. Furthermore, by aligning the end surface of the coating of the second cable 4 facing the rotating member 2 concentrically with the outer surface of the sphere, the thickness of lubrication gap 41 is relatively uniform, and the grease is evenly distributed within lubrication gap 41, thereby improving lubrication effectiveness.

[0038] Optionally, the grease filled in the lubrication gap 41 is perfluoropolyether grease, and its operating temperature is -70℃~250℃; that is, the grease can maintain the lubricating effect on the sphere between -70℃~250℃, and when the signal integrity test of the device under test is performed in a high or low temperature environment, the cable assembly 100 can maintain good bending performance.

[0039] like Figure 2 and Figure 3 As shown, the installation cavity 11 is a cylindrical cavity, and the extension direction of its axis is consistent with the first direction; when the first cable 3 does not rotate relative to the second cable 4, the extension direction of the axis of the installation cavity 11, the length direction of the first cable 3, the length direction of the second cable 4, and the extension direction of the conductive channel 21 inside the rotating member 2 are all consistent.

[0040] The axis of the mounting cavity 11 is the first axis, and the line perpendicular to the first axis and passing through the center of the sphere is the second axis. When an external force is applied, the first cable 3 can be twisted relative to the second cable 4 about the first axis, causing the sphere to rotate about the first axis. The sphere's rotation angle about the first axis ranges from ±180°, meaning that the maximum angle of twisting of the first cable 3 relative to the second cable 4 under the action of an external force is 180°. Simultaneously, the first cable 3 can also bend relative to the second cable 4 under the action of an external force, causing the sphere to rotate about the second axis. The sphere's rotation angle about the second axis ranges from ±90°, meaning that the maximum angle of bending of the first cable 3 relative to the second cable 4 is 90°. This allows the first cable 3 to be adjusted in multiple directions, further improving the bending flexibility of the cable assembly 100. This reduces the probability of failure at the connection point between the cable assembly 100 and the SMA connector, improves the accuracy of signal integrity testing, and ensures test progress.

[0041] It can be understood that there are multiple second axes, and the multiple second axes constitute a plane passing through the center of the sphere and perpendicular to the first axis. The sphere can rotate around any axis passing through its center on the plane, that is, the first cable 3 can be bent in multiple directions relative to the second cable 4, thereby ensuring the bending flexibility and bending life of the cable assembly 100, so that the cable assembly 100 can adapt to the multi-angle and multi-directional bending requirements during the signal integrity test process.

[0042] In some embodiments, as Figure 2 and Figure 3 As shown, the cable assembly 100 also includes a support member 5, which is arranged in the installation cavity 11. The support member 5 includes an inner ring 51 and an outer ring 52. The outer ring 52 is connected to the inner wall surface of the installation cavity 11. At least part of the rotating member 2 is located in the inner ring 51. The inner ring 51 has an arc surface that is adapted to the outer peripheral surface of the rotating member 2. The arc surface is formed at the inner peripheral surface of the inner ring 51 or at the intersection of the inner peripheral surface of the inner ring 51 and the end surface of the inner ring 51 facing the rotating member 2.

[0043] The support member 5 plays a supporting role between the rotating member 2 and the inner wall surface of the installation cavity 11, so as to facilitate the arrangement and installation of the rotating member 2; at the same time, the rotating member 2 can be limited by the arc surface of the inner ring to improve the rotation stability of the rotating member 2.

[0044] The rotating part 2 is a sphere. If the center of the sphere is located inside the inner ring 51 (not shown in the figure), part or all of the sphere is located inside the inner ring 51. At this time, the diameter of the sphere is equal to the diameter of the inner circumference of the inner ring 51, and the inner circumference of the inner ring 51 forms the above-mentioned arc surface that is adapted to the outer circumference of the sphere. In other words, the outer surface of the sphere is gap-fitted with the inner circumference of the inner ring 51. The inner circumference of the inner ring 51 can limit the sphere, improve the stability of the sphere's rotation, and thereby extend the bending life of the cable assembly 100.

[0045] like Figure 2 and Figure 4 As shown, if the center of the sphere is located outside the inner ring 51, part of the sphere is located inside the inner ring 51, and the other part is located on the side of the inner ring 51 close to the first cable 3. At this time, the diameter of the sphere is smaller than the diameter of the inner circumference of the inner ring 51. The intersection of the inner circumference of the inner ring 51 and the end face of the inner ring 51 facing the rotating part 2 forms the above-mentioned arc surface 511 adapted to the outer circumference of the sphere. The arc surface 511 can be formed by the chamfer of the intersection of the inner circumference of the inner ring 51 and the end face of the inner ring 51 facing the rotating part 2. The arc surface 511 is tangentially abutted with the outer surface of the sphere, thereby achieving the limitation of the sphere, improving the stability of the rotation of the sphere, and thereby improving the bending life of the cable assembly 100.

[0046] In some embodiments, as Figure 2 and Figure 3 As shown, the end of the covering layer of the second cable 4 facing the rotating member 2 is located inside the inner ring 51, and the volume of the portion of the rotating member 2 located inside the inner ring 51 is smaller than the volume of the portion of the rotating member 2 located outside the inner ring 51; the cable assembly 100 also includes an elastic member 6, the elastic member 6 has a first end and a second end, the first end of the elastic member 6 is connected to the outer ring 52, and the second end of the elastic member 6 is connected to the rotating member 2.

[0047] Through the above arrangement, the center of the rotating member 2 is located outside the inner ring 51, a small part of the rotating member 2 is located inside the inner ring 51, and most of it is located outside the inner ring 51. The first cable 3 is connected to the part of the rotating member 2 located outside the inner ring 51. Therefore, while using the inner ring 51 to limit the rotation of the rotating member 2, it is more conducive to the connection between the rotating member 2 and the first cable 3, preventing the inner circumference of the inner ring 51 from hindering the rotation of the first cable 3 relative to the second cable 4, thereby ensuring the bending flexibility of the cable assembly 100.

[0048] In addition, a connection can be established between the rotating member 2 and the supporting member 5 through the first end and the second end of the elastic member 6, so that the rotating member 2 remains in contact with the arc surface 511 of the inner ring, preventing the sphere from separating from the inner ring 51, thereby further improving the rotational stability of the sphere.

[0049] Alternatively, as Figure 2 and Figure 3 The support member 5 is a double-row angular contact ceramic bearing, the outer ring 52 of the bearing forms the above-mentioned outer ring 52, and the inner ring 51 of the bearing forms the above-mentioned inner ring 51.

[0050] Using a standard bearing as the support member 5 can reduce the production cost of the cable assembly 100 .

[0051] In addition, when the first cable 3 rotates relative to the second cable 4 under the action of external force and drives the ball to rotate around the first axis, it is difficult for the ball to drive grease from the lubrication gap 41 into the space between the ball and the arc surface 511 of the inner ring, which may cause the rotation of the ball around the first axis to become stuck. At this time, the inner ring 51 of the bearing can also rotate with the ball relative to the outer ring 52 to ensure smooth rotation of the ball, thereby ensuring smooth bending of the first cable 3 relative to the second cable 4, reducing the risk of fatigue fracture of the inner conductor 31 of the first cable 3 and the second cable 4, thereby reducing the probability of signal transmission failure and improving the service life of the cable assembly 100.

[0052] In some embodiments, there are multiple elastic members 6 , and the multiple elastic members 6 are evenly spaced along the circumference of the support member 5 .

[0053] Multiple elastic members 6 are evenly spaced along the direction of the support member 5, and can apply uniform tension to the sphere along the circumference of the support member 5, so that the sphere can remain stable; at the same time, when the sphere rotates under the drive of the first cable 3 and the external force acting on the first cable 3 disappears, the rotating member 2 can be reset under the elastic force of the elastic member 6, and then the first cable 3 can be driven to reset, thereby extending the service life of the cable assembly 100.

[0054] In some embodiments, as Figure 2 and Figure 3 As shown, the cable assembly 100 further includes a sleeve 7 made of a flexible material. The sleeve 7 includes a first tube segment 71 and a second tube segment 72 . The first tube segment 71 is sleeved around the outer periphery of the first cable 3 , and the second tube segment 72 is sleeved around one end of the housing 1 close to the first cable 3 .

[0055] By providing the sleeve 7, the opening of the installation cavity 11 near the end of the first cable 3 can be blocked, preventing dust and impurities from the external environment from entering the installation cavity 11, thereby protecting the various components inside the installation cavity 11. In addition, the sleeve 7 is made of a flexible material, which can reduce the impact of the sleeve 7 on the first cable 3, allowing the first cable 3 to rotate relative to the second cable 4, thereby achieving bending or twisting of the cable assembly 100.

[0056] In some embodiments, as Figure 2 and Figure 3 As shown, the tube wall of the sleeve 7 includes a thermoplastic layer 73 and a memory alloy layer 74. The memory alloy layer 74 is arranged on the inner side of the thermoplastic layer 73. After the first cable 3 rotates relative to the second cable 4 under the action of external force, it can be reset under the memory effect of the sleeve 7.

[0057] When the first cable 3 rotates relative to the second cable 4 under the action of an external force, the first cable 3 applies a force to the memory alloy layer 74. Under this force, the memory alloy layer 74 adaptively deforms. When the external force applied to the first cable 3 disappears, the memory alloy layer 74 can automatically reset, thereby driving the first cable 3 to automatically reset. Therefore, under the action of the memory alloy layer 74 and the multiple elastic members 6, the automatic reset of the first cable 3 and the sphere after rotation can be guaranteed.

[0058] Optionally, the memory alloy layer 74 is made of NiTi shape memory alloy, whose phase transition temperature is 35° C. Thus, the memory alloy layer 74 can automatically reset after deformation at room temperature.

[0059] In other embodiments, those skilled in the art may select a memory alloy of appropriate material to form the memory alloy layer 74 according to the operating temperature and ambient temperature of the cable assembly 100, so as to ensure that the memory alloy layer 74 can automatically reset after being deformed under external force.

[0060] Optionally, the thermoplastic layer 73 of the sleeve 7 is made of a thermoplastic tube. By heating, the thermoplastic tube sleeve 7 can be tightly wrapped around the outer sheath of the first cable 3 and the housing 1, making the installation of the sleeve 7 simpler and less costly.

[0061] In some embodiments, as Figure 1 and Figure 2 As shown, the installation cavity 11 includes a first opening 111 and a second opening 112 arranged opposite to each other in a first direction, a portion of the rotating member 2 extends out of the first opening 111, one end of the wrapping layer of the first cable 3 extends into the installation cavity 11 through the first opening 111 and fits into the rotating member 2, and the end of the wrapping layer of the second cable 4 away from the rotating member 2 is adjacent to the second opening 112.

[0062] Specifically, the volume of the portion of the rotating member 2 extending out of the first opening 111 is much smaller than the volume of the portion located in the installation cavity 11, that is, the fitting position of the wrapping layer of the first cable 3 and the rotating member 2 is located at the first opening 111, which is more conducive to the rotation of the first cable 3 and reduces the probability of the first cable 3 colliding with the inner wall surface of the installation cavity 11 during rotation.

[0063] Specifically, if Figure 2 and Figure 3 As shown, the installation cavity 11 includes a first cavity segment 113, a second cavity segment 114 and a third cavity segment 115 arranged in sequence along the first direction. The first cavity segment 113, the second cavity segment 114 and the third cavity segment 115 are all cylindrical. The diameters of the first cavity segment 113, the second cavity segment 114 and the third cavity segment 115 decrease in sequence. The first cavity segment 113 is closer to the first cable 3 than the third cavity segment 115; the end of the first cavity segment 113 away from the second cavity segment 114 forms the above-mentioned first opening 111, and the end of the third cavity segment 115 away from the second cavity segment 114 forms the above-mentioned second opening 112.

[0064] A first step surface 116 is formed between the first cavity section 113 and the second cavity section 114. The support member 5 and a portion of the rotating member 2 are located in the first cavity section 113. The first step surface 116 is in contact with the outer ring 52 of the bearing to achieve bearing limiting. One end of the first cable 3 extends into the first cavity section 113 through the first opening 111 and is in contact with the outer surface of the rotating member 2. The two ends of the second cable 4 extend to the first cavity section 113 and the third cavity section 115 respectively. The outer diameter of the second cable 4 matches the diameter of the inner wall surface of the third cavity section 115 to achieve the effect of blocking the second opening 112.

[0065] There is a gap between the outer surface of the second cable 4 and the inner wall surface of the second cavity section 114, and the gap is filled with a cylindrical filling block 8 made of hard polyurethane. The cylindrical filling block 8 can improve the installation stability of the second cable 4; a second step surface 117 is formed between the second cavity section 114 and the third cavity section 115, one end of the cylindrical filling block 8 fits the second step surface 117, and the other end extends to the bearing and is clearance-matched with the end face of the inner ring 51 of the bearing to prevent the cylindrical filling block 8 from hindering the rotation of the inner ring 51.

[0066] In some embodiments, an elastic telescopic component 9 is provided in the conductive channel 21, and the elastic telescopic component 9 can elastically expand and contract in a first direction. One end of the elastic telescopic component 9 is electrically connected to the inner conductor 31 of the first cable 3, and the other end of the elastic telescopic component 9 is electrically connected to the inner conductor 31 of the second cable 4.

[0067] The inner conductor 31 of the first cable 3 and the inner conductor 31 of the second cable 4 are conductively connected in the conductive channel 21 through the elastic telescopic component 9. When the first cable 3 rotates relative to the second cable 4 under the action of an external force, a force is applied to one end of the elastic telescopic component through the inner conductor 31 of the first cable 3, and the elastic telescopic component 9 elastically deforms; when the external force applied to the first cable 3 disappears, the first cable 3 is reset under the memory effect of the sleeve 7, and the rotating member 2 is reset under the action of the multiple elastic members 6. At this time, the tension applied by the inner conductor 31 of the first cable 3 on one end of the elastic telescopic component 9 disappears, and the elastic telescopic component 9 is reset under the action of its own elastic force; thereby, the stability of the connection between the inner conductor 31 of the first cable 3 and the inner conductor 31 of the second cable 4 before and after bending can be ensured.

[0068] Optionally, the elastic telescopic component 9 is a spring pin.

[0069] The gold-plated surface treatment of the spring pins results in low contact resistance and high signal transmission quality, thereby ensuring the signal transmission quality of the first cable 3 and the second cable 4 in a bent state.

[0070] Specifically, if Figure 2 and Figure 3 As shown, the rotating part 2 is a sphere, and the conductive channel 21 passes through the sphere. The conductive channel 21 is cylindrical, and its axis coincides with the center of the sphere. The diameter of the conductive channel 21 is larger than the maximum outer diameter of the elastic telescopic component 9, thereby leaving sufficient deformation space for the elastic telescopic component so that the cable assembly 100 can bend under the action of external force.

[0071] In other embodiments, the elastic expansion component 9 may not be provided, and the inner conductor 31 of the first cable 3 and the inner conductor 31 of the second cable 4 in the conductive channel 21 may be set as a slack section, and the length of the slack section is greater than the length of the conductive channel 21, thereby leaving a margin for the rotation of the first cable 3 to prevent the inner conductor 31 from being pulled and damaged during the rotation of the first cable 3.

[0072] Optionally, the inner wall surface of the conductive channel 21 is provided with a gold-plated layer, and the thickness of the gold-plated layer is 3 μm.

[0073] This ensures that the resistance generated by the contact between the first and second inner conductors 31 and the pogo pins is less than 5mΩ, reducing signal attenuation and distortion during high-frequency signal transmission and ensuring the accuracy of high-frequency signal integrity testing. Furthermore, the gold plating shields the inner conductors 31 of the first and second cables 3 and 4 within the conductive channel 21, thereby reducing interference with the signal during transmission within these inner conductors 31 and ensuring the accuracy of signal integrity testing.

[0074] In other embodiments, coatings made of other materials may be provided on the inner wall surface of the conductive channel 21 as required to further meet shielding requirements for signal transmission, low contact resistance requirements, etc.

[0075] The above is a detailed introduction to a cable assembly 100 provided by the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only intended to help understand the method and core concept of the present application. It should be noted that, for those skilled in the art, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A cable assembly (100), characterized in that: include: A housing (1), the housing (1) having a mounting cavity (11), the mounting cavity (11) being provided with openings at both ends thereof arranged opposite to each other in a first direction; a rotating member (2), at least a portion of the rotating member (2) being disposed in the mounting cavity (11) and being rotatable relative to the housing (1), the rotating member (2) having a conductive channel (21) extending therethrough along the first direction, and an outer surface of the rotating member (2) comprising an arcuate surface; A first cable (3) and a second cable (4), at least a portion of the first cable (3) is located in the installation cavity (11) and is located on one side of the rotating member (2) in the first direction, each of the first cable (3) and the second cable (4) comprises a coating layer and an inner conductor (31), the coating layer is provided on the outer peripheral side of the inner conductor (31), one end of the coating layer of the first cable (3) is in contact with the arc surface of the rotating member (2) and the shape is adapted to drive the rotating member (2) to rotate; at least a portion of the second cable (4) is located in the installation cavity (11) and is located on the one side of the rotating member (2) in the first direction On the other upward side, the inner conductor (31) of the first cable (3) and the inner conductor (31) of the second cable (4) are respectively extended into the conductive channel (21) and are conductively connected, the end of the first cable (3) away from the rotating member (2) is used to connect to the device under test, and the end of the second cable (4) away from the rotating member (2) is used to connect to the test instrument; the rotating member (2) is a sphere, the end face of the coating layer of the first cable (3) facing the rotating member (2) is an arc surface, and the end face of the coating layer of the second cable (4) facing the rotating member (2) is an arc surface and is clearance-matched with the outer surface of the rotating member (2); The cable assembly (100) further comprises a support member (5), the support member (5) being arranged in the installation cavity (11), the support member (5) comprising an inner ring (51) and an outer ring (52), the outer ring (52) being connected to the inner wall surface of the installation cavity (11), at least a portion of the rotating member (2) being located in the inner ring (51), the inner ring (51) having an arc surface adapted to the outer peripheral surface of the rotating member (2), the arc surface being formed at the inner peripheral surface of the inner ring (51) or at the intersection of the inner peripheral surface of the inner ring (51) and the end surface of the inner ring (51) facing the rotating member (2); One end of the coating layer of the second cable (4) facing the rotating member (2) is located inside the inner ring (51), and the volume of the portion of the rotating member (2) located inside the inner ring (51) is smaller than the volume of the portion of the rotating member (2) located outside the inner ring (51); The cable assembly (100) further comprises an elastic member (6), wherein the elastic member (6) has a first end and a second end, wherein the first end of the elastic member (6) is connected to the outer ring (52), and the second end of the elastic member (6) is connected to the rotating member (2).

2. The cable assembly (100) according to claim 1, characterized in that The gap between the end surface of the coating layer of the second cable (4) facing the rotating member (2) and the outer surface of the rotating member (2) is filled with grease.

3. The cable assembly (100) according to claim 1, characterized in that There are a plurality of elastic members (6), and the plurality of elastic members (6) are evenly spaced along the circumference of the support member (5).

4. The cable assembly (100) according to any one of claims 1-3, characterized in that The cable assembly (100) further comprises a sleeve (7) made of a flexible material, the sleeve (7) comprising a first pipe section (71) and a second pipe section (72), the first pipe section (71) being sleeved around the outer periphery of the first cable (3), and the second pipe section (72) being sleeved around one end of the housing (1) close to the first cable (3).

5. The cable assembly (100) according to claim 4, characterized in that: The tube wall of the sleeve (7) comprises a thermoplastic layer (73) and a memory alloy layer (74); the memory alloy layer (74) is arranged on the inner side of the thermoplastic layer (73); and the first cable (3) can be reset under the memory effect of the sleeve (7) after rotating relative to the second cable (4) under the action of an external force.

6. The cable assembly (100) according to claim 5, characterized in that The installation cavity (11) comprises a first opening (111) and a second opening (112) arranged opposite to each other in the first direction; a portion of the rotating member (2) extends out of the first opening (111); one end of the wrapping layer of the first cable (3) extends into the installation cavity (11) through the first opening (111) and fits with the rotating member (2); and one end of the wrapping layer of the second cable (4) away from the rotating member (2) is adjacent to the second opening (112).

7. The cable assembly (100) according to any one of claims 1-3, characterized in that An elastic telescopic component (9) is provided in the conductive channel (21), and the elastic telescopic component (9) can elastically telescope in the first direction. One end of the elastic telescopic component (9) is electrically connected to the inner conductor (31) of the first cable (3), and the other end of the elastic telescopic component (9) is electrically connected to the inner conductor (31) of the second cable (4).

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