Aoi detection device wire harness

Abstract

This invention proposes a wiring harness for AOI (Automated Optical Inspection) equipment, comprising a connector assembly, a cable assembly, a branch protection assembly, an identification assembly, and a termination assembly. The connector assembly includes a D-SUB connector and a housing. The cable assembly includes a multi-core wire electrically connected to the D-SUB connector, and the multi-core wire, from the inside out, includes a core wire bundle, a braided layer, and a sheath layer. The branch protection assembly is disposed at the branching point of the multi-core wire, the identification assembly is disposed on each branch wire, and the termination assembly is disposed at the end of each branch wire. The termination assembly includes a pin terminal, which, along its length, includes a insertion section, a limiting transition section, and a crimping section. By providing a branch protection assembly at the branching point and a pin terminal with a limiting transition section at the termination point, the connection stability and vibration resistance of the wiring harness can be improved, as well as the branch circuit identification and termination correspondence effects can be enhanced.

Description

Technical Field

[0001] This invention relates to the field of wire harness technology, and more specifically, to a wire harness for AOI inspection equipment. Background Technology

[0002] In practical applications, AOI inspection equipment typically requires a wiring harness to transmit power and / or control signals between the equipment and the terminal load. Existing AOI inspection equipment wiring harnesses generally employ a multi-branch wiring scheme, using a D-SUB industrial connector as the main interface to connect to the equipment. Power and / or control signals are transmitted centrally via multi-core cables. At the end, the wiring is branched off, and different circuits are distinguished by markings. Finally, termination connectors connect to the terminal load, thus achieving branched conduction of multiple electrical circuits on a single interface to meet the power supply and signal connection requirements of multiple modules in the AOI inspection equipment.

[0003] However, the existing wire harnesses of this type still have the following shortcomings in practical use: On the one hand, after the existing wiring harness is split at the end, different branch circuits are usually distinguished only by the marking piece. The correspondence between different branch circuits and their corresponding termination positions is not clear enough, and there is still a risk of wiring errors during installation and maintenance. On the other hand, existing wire harnesses typically only have simple wrapping treatment at the branching points, and the branching transition area lacks special protection. When the wire harness is subjected to vibration, bending or pulling conditions, stress concentration is likely to occur at the root of the branch, which in turn affects the connection reliability and service life of the wire harness.

[0004] Therefore, it is necessary to propose an AOI inspection equipment harness to improve the problems of insufficient identification correspondence of branch circuits and poor reliability of branching parts in the existing technology. Summary of the Invention

[0005] The purpose of this application is to provide a wire harness for AOI inspection equipment. By setting a branch protection component at the branching point of the wire harness and setting a needle terminal with a limiting transition section at the termination point, a protective structure is constructed in which the branching end and the termination end work together. This improves the connection stability and vibration resistance of the wire harness, while enhancing the clarity of branch circuit identification and the accuracy of termination correspondence.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: This invention proposes a wiring harness for an AOI inspection device, comprising a connector assembly, a cable assembly, a branch protection assembly, an identification assembly, and a termination assembly; The connector assembly includes a D-SUB connector for mating with AOI inspection equipment and a housing disposed on the outside of the D-SUB connector; The cable assembly includes a multi-core wire electrically connected to the D-SUB connector; a splitter protection assembly is disposed at the end of the multi-core wire away from the D-SUB connector; The marking component is disposed on the side of the splitter protection component away from the multi-core wire; the termination component is disposed on the side of the marking component away from the splitter protection component; The multi-core wire branches out into multiple branch lines at the branch protection component, and the identification component is respectively disposed on each of the branch lines. The termination component is disposed at the end of each of the branch lines, so that the D-SUB connector establishes an electrical connection with the terminal load through the multi-core wire, each of the branch lines and the termination component.

[0007] In one embodiment, the housing covers the outside of the D-SUB connector and is connected to one end of the multi-core wire to protect the connection between the D-SUB connector and the multi-core wire.

[0008] In one embodiment, the multi-core wire comprises, from the inside out, a core bundle, a braided layer, and a sheath layer.

[0009] In one embodiment, the braided layer is a galvanized braided layer.

[0010] In one embodiment, the sheath layer is made of XLPE material.

[0011] In one embodiment, the branch protection component is a heat shrink tubing, which is sleeved on the outside of the branching portion of the multi-core wire and covers the starting section of each branch wire to provide insulation protection and stress relief for the branching transition area.

[0012] In one embodiment, the identification component is a number tube, and each number tube is respectively sleeved on the corresponding branch line for identifying and marking different branch circuits.

[0013] In one embodiment, the plurality of branch lines include at least two sets of independent loops, each set of independent loops including a positive branch and a negative branch.

[0014] In one embodiment, the termination assembly includes needle terminals that are connected one-to-one with each of the branch lines.

[0015] In one embodiment, the needle terminal includes, along its length, a plug section, a limiting transition section, and a crimping section in sequence.

[0016] In one embodiment, the limiting transition section is connected between the plug section and the crimping section, and the outer contour dimension of the limiting transition section changes along the direction from the plug section to the crimping section to form an irregular transition structure.

[0017] In one embodiment, the limiting transition section is used to limit and position the assembly position of the needle tube terminal and to form a stress transition at the connection between the cable and the needle tube terminal, so as to improve the vibration resistance of the termination part.

[0018] In one embodiment, the limiting transition section has an irregular outer contour that varies along the length direction of the needle tube terminal to form a guide and positioning part during the assembly of the needle tube terminal.

[0019] In one embodiment, the limiting transition section includes a first transition edge and a second transition edge disposed opposite to each other, the first transition edge and the second transition edge being respectively connected between the insertion section and the crimping section, so that the limiting transition section forms an irregular contour transitioning from the insertion section to the crimping section.

[0020] In one embodiment, the insertion section, the limiting transition section, and the crimping section are integrally formed.

[0021] In one embodiment, the limiting transition section is disposed between the insertion section and the crimping section, and is located between the insertion conductive part of the needle terminal and the cable crimping connection part, so that the vibration load transmitted from the branch line to the needle terminal is stress-transferred through the limiting transition section before being transmitted to the insertion section, thereby reducing stress concentration at the insertion part.

[0022] In one embodiment, the heat shrink tubing covers and fixes the starting section of each branch line, and the limiting transition section limits and transitions the termination position of each branch line, thereby forming a branch line stress relief structure and a termination stress transition structure at both ends of each branch line to improve the overall vibration resistance of the wire harness.

[0023] In one embodiment, each of the independent circuits is respectively provided with the number tube and the needle tube terminal to form a circuit identification and termination position one-to-one anti-misconnection structure.

[0024] In one embodiment, the braided layer and the sheath layer together cover the core wire harness and together with the outer shell and the heat shrink tubing, form a continuous protective structure from the D-SUB connector to the branch point.

[0025] Compared with the prior art, the present invention has the following beneficial effects: Firstly, by setting up a branch protection component, the present invention enables multi-core wires to form a special transition protection structure at the branching point, thereby improving the problem that the branching area of ​​existing wire harnesses is simply covered and prone to stress concentration, which is conducive to improving the connection reliability and service life of the branching point.

[0026] Secondly, by setting up identification components and termination components, and establishing a corresponding relationship between the identification components and each branch line and termination component, this invention can improve the problem of unclear differentiation of existing branch circuits, and help reduce the risk of wiring errors during installation and maintenance.

[0027] Thirdly, by setting a plug section, a limiting transition section and a crimping section on the needle tube terminal, and placing the limiting transition section between the plug section and the crimping section, the present invention can form a relatively smooth transition connection at the termination point, which is beneficial to improving the stability of the termination connection.

[0028] Fourth, by including a core wire bundle, a braided layer, and a sheath layer in the multi-core wire, this invention can improve the overall protection performance of the cable assembly while realizing the transmission of power signals and / or control signals, so as to better adapt to the operating conditions of AOI inspection equipment. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the wiring harness of the AOI inspection equipment of this application.

[0030] Figure 2 This is a cross-sectional view of the multi-core wires of the AOI inspection equipment wiring harness of this application.

[0031] The following detailed description, in conjunction with the accompanying drawings, will further illustrate the present invention.

[0032] Explanation of main component symbols D-SUB connector 1; housing 2; 3. Multi-core wire; 31. Core wire bundle; 32. Braided layer; 33. Sheath layer; Heat shrink tubing 4; Numbering tube 5; Needle terminal 6; insertion section 61; limiting transition section 62; first transition edge 621; second transition edge 622; crimping section 63. Detailed Implementation

[0033] Example: Existing AOI inspection equipment typically uses a multi-branch wiring harness scheme, with D-SUB industrial connectors as the main interface to connect to the equipment. Power signals and / or control signals are transmitted centrally through multi-core cables. The wiring is then split at the end and identified by markings to distinguish different circuits. Finally, termination connectors are used to connect to the terminal load, thereby achieving the branching and conduction of multiple electrical circuits on a single interface, meeting the power supply and signal connection requirements of multiple modules in AOI inspection equipment.

[0034] However, in practical applications, traditional wire harness structures typically only provide simple wrapping at the branch points, lacking dedicated protection in the branch transition areas. Under continuous operation, vibration, bending, or pulling conditions, stress concentration can easily occur at the root of the branch, affecting the reliability and service life of the wire harness connection. At the same time, the correspondence between the branch circuits at the tail end of the existing wire harness and their corresponding termination positions is not clear enough, and there is still a risk of wiring errors during installation and maintenance, making it difficult to meet the requirements of AOI inspection equipment for connection stability and maintenance convenience.

[0035] To address the aforementioned issues, the applicant recognized the need to develop an AOI (Automated Optical Inspection) equipment harness solution that offers superior protection at branch points, more stable termination connections, and a clearer correspondence between branch circuits and termination positions. While ensuring a reliable electrical connection between the equipment and the terminal load, effective transition protection relationships should be established at both the branch start and termination ends of the harness. This would mitigate the problems of stress concentration and unstable connections that traditional harnesses are prone to under vibration, bending, and other conditions, while also facilitating installation identification and subsequent maintenance.

[0036] Therefore, as Figure 1 As shown, this application proposes a wiring harness for an AOI (Automated Optical Inspection) device, comprising: A connector assembly, the connector assembly including a D-SUB connector 1 for mating with an AOI inspection device and a housing 2 disposed outside the D-SUB connector 1; A cable assembly comprising a multi-core wire 3 electrically connected to the D-SUB connector 1; The wire protection component is disposed at the end of the multi-core wire 3 away from the D-SUB connector 1; An identification component is disposed on the side of the branch protection component away from the multi-core wire 3; A termination component, wherein the termination component is disposed on the side of the marking component away from the branch protection component; The multi-core wire 3 branches out into multiple branch lines at the branch protection component, and the identification component is respectively disposed on each of the branch lines. The termination component is respectively disposed at the end of each of the branch lines, so that the D-SUB connector 1 establishes an electrical connection with the terminal load through the multi-core wire 3, each of the branch lines and the termination component.

[0037] Compared to existing technologies, traditional AOI inspection equipment wiring harnesses typically only focus on the basic conductivity between the equipment end and the load end, lacking an overall structural design for coordinated protection of branching and termination points. This leads to a decline in connection reliability during long-term operation. This application constructs an overall structure with connector components, cable components, branching protection components, identification components, and termination components arranged sequentially. This allows the wiring harness to achieve multi-loop branching connections while simultaneously ensuring branching protection, loop identification, and termination stability, thereby improving the adaptability and engineering reliability of the entire wiring harness in AOI inspection equipment applications.

[0038] The outer shell 2 covers the outside of the D-SUB connector 1 and is connected to one end of the multi-core wire 3 to protect the connection between the D-SUB connector 1 and the multi-core wire 3.

[0039] Compared to existing technologies, the connection between traditional D-SUB connectors and cables typically relies on a simple connection for fixation. This connection area is susceptible to external forces such as tension or vibration, which can affect the stability of the connection at the interface. This application addresses this issue by providing a housing 2 on the outside of the D-SUB connector 1 and connecting the housing 2 to one end of the multi-core wire 3. This provides protective coverage to the connection between the connector and the cable, improving the structural integrity of the connector assembly and reducing stress at the interface, thus enhancing the stability of the connection at the device end.

[0040] like Figure 2 As shown, the multi-core wire 3 includes, from the inside out, a core wire bundle 31, a braided layer 32, and a sheath layer 33.

[0041] Compared with existing technologies, traditional wire harnesses mostly adopt a single outer sheath structure, resulting in fewer overall protection layers for the cable. This makes it difficult to simultaneously meet the requirements of internal core wire transmission and external protection under complex equipment operating conditions. This application addresses this by configuring the multi-core wire 3 as a layered structure consisting of a core wire harness 31, a braided layer 32, and a sheath layer 33. This allows the internal core wire transmission structure and the external protection structure to work together, ensuring the normal transmission of power signals and / or control signals while improving the overall structural stability and environmental adaptability of the cable assembly.

[0042] The braided layer 32 is a galvanized braided layer.

[0043] Compared with existing technologies, the protective performance of traditional wire harness external braided structures is limited. When the cable is subjected to external friction or long-term use, it is difficult to balance the protective effect and structural durability. This application, by setting the braided layer 32 as a galvanized braided layer, can form a more stable braided protective structure on the outside of the multi-core wire 3, thereby improving the overall durability and protective performance of the cable, making it more suitable for the use requirements of AOI inspection equipment in continuous operating environments.

[0044] The sheath layer 33 is made of XLPE material.

[0045] Compared with existing technologies, traditional wire harness sheath materials are prone to problems such as insufficient wear resistance and limited protection capabilities during long-term use, which is not conducive to the long-term stable operation of the wire harness. This application uses XLPE material to form the sheath layer 33, so that the sheath layer 33 can have better protection performance while covering the internal structure, thereby improving the overall external protection capability and service stability of the multi-core wire 3.

[0046] The branch protection component is a heat shrink tubing 4, which is sleeved on the outside of the branching part of the multi-core wire 3 and covers the starting section of each branch wire to provide insulation protection and stress relief for the branching transition area.

[0047] Compared to existing technologies, traditional wire harnesses typically only provide simple wrapping at the branching points, making the root of the branch line prone to stress concentration under vibration or bending conditions. This can lead to core wire damage, insulation layer breakage, or decreased connection reliability. This application addresses this issue by incorporating heat-shrink tubing 4 at the branching points of the multi-core wire 3, covering the starting sections of each branch line. This creates a dedicated branching transition protection structure between the main wire and branch lines, achieving insulation protection and stress relief in the branching area and improving the reliability issues of traditional branching points.

[0048] The identification component is a number tube 5, and each number tube 5 is respectively sleeved on the corresponding branch line for identifying and marking different branch circuits.

[0049] Compared with existing technologies, traditional wire harnesses lack intuitive branch circuit identification methods in multi-branch circuit scenarios, easily leading to identification difficulties or operational confusion during later installation and maintenance. This application addresses this by setting number tubes 5 on each branch line to identify and mark different branch circuits, making each branch circuit more clearly identifiable during installation, maintenance, and repair, thereby improving the convenience of identification and maintenance efficiency during wire harness use.

[0050] The multiple branch lines include at least two sets of independent loops, each set of independent loops including a positive branch and a negative branch.

[0051] Compared with existing technologies, traditional AOI inspection equipment wiring harnesses in multi-module connection scenarios have unclear branch circuit structures, which is not conducive to standardized corresponding connections for different load modules. This application solves this problem by setting multiple branch lines as at least two independent circuits, with each independent circuit including a positive branch and a negative branch, thereby making the multi-circuit output relationship clearer and facilitating the electrical connection configuration between multiple modules of the AOI inspection equipment.

[0052] The termination assembly includes needle terminals 6 that are connected one-to-one with each of the branch lines.

[0053] Compared with existing technologies, traditional wire harness termination methods, especially in multi-branch structures, lack a clear relationship between the termination position and the branch lines, which can easily affect the orderliness and stability of the termination connection. This application uses pin-tube terminals 6 as termination components and connects each pin-tube terminal 6 to its corresponding branch line, thereby making the termination relationship clearer and facilitating the rapid establishment of a stable electrical connection with the terminal load.

[0054] The needle terminal 6 includes, along its length, a plug section 61, a limiting transition section 62, and a crimping section 63.

[0055] Compared with existing technologies, traditional needle terminals are mostly simple linear structures with unclear structural transitions between different functional areas, which is not conducive to balancing insertion continuity, assembly positioning, and end connection stability. This application improves the rationality of the overall structure and the stability of the termination assembly by setting the needle terminal 6 as a segmented structure that includes an insertion section 61, a limiting transition section 62, and a crimping section 63 along its length. This allows the needle terminal 6 to functionally correspond to terminal insertion, transition positioning, and cable connection, thereby improving the overall structure of the termination assembly and its operational stability.

[0056] The limiting transition section 62 is connected between the plug section 61 and the crimping section 63, and the outer contour dimension of the limiting transition section 62 changes along the direction from the plug section 61 toward the crimping section 63 to form an irregular transition structure.

[0057] Compared with existing technologies, traditional terminals often lack a dedicated transition area between the plug-in end and the connection end, resulting in abrupt structural changes and an uneven force transmission path, which can easily lead to localized stress concentration in the termination area. This application addresses this by providing a limiting transition section 62 between the plug-in section 61 and the crimping section 63, and by creating an irregularly shaped transition structure with gradually changing outer contour dimensions for this limiting transition section 62. This creates a more natural structural connection between different functional sections, improving the rationality of the connection between the various functional areas of the terminal.

[0058] The limiting transition section 62 is used to limit and position the assembly position of the needle tube terminal 6, and to form a stress transition at the connection between the cable and the needle tube terminal 6, so as to improve the vibration resistance of the termination part.

[0059] Compared with existing technologies, traditional terminals lack a clear positioning transition section during assembly, and vibration loads can easily act directly on the terminal insertion area, affecting the long-term stability of the termination connection. This application, by enabling the limiting transition section 62 to simultaneously possess assembly limiting positioning and stress transition functions, not only improves the accuracy of terminal installation positioning but also creates a more reasonable force transition relationship at the connection between the branch line and the needle terminal 6, thereby enhancing the vibration resistance of the termination part under vibration conditions.

[0060] The limiting transition section 62 has an irregular outer contour that varies along the length direction of the needle terminal 6, so as to form a guide and positioning part during the assembly process of the needle terminal 6.

[0061] Compared with existing technologies, traditional terminals typically lack dedicated guiding and positioning structures during insertion and positioning, resulting in insufficient guidance during assembly and potentially affecting assembly smoothness. This application addresses this by giving the limiting transition section 62 an irregularly shaped outer contour that varies along the length of the needle terminal 6, thereby forming a guiding and positioning part during assembly and improving the guiding effect and positioning accuracy of the needle terminal 6 during installation.

[0062] The limiting transition section 62 includes a first transition edge 621 and a second transition edge 622 disposed opposite to each other. The first transition edge 621 and the second transition edge 622 are respectively connected between the insertion section 61 and the crimping section 63, so that the limiting transition section 62 forms an irregular contour that transitions from the insertion section 61 to the crimping section 63.

[0063] Compared with existing technologies, the transition contour of traditional terminals is relatively simple and the structure is not clearly defined, which is not conducive to balancing structural transition and assembly guidance functions within a limited space. This application, by setting a first transition edge 621 and a second transition edge 622 that are set opposite to each other, makes the limiting transition section 62 form an irregular contour that gradually transitions from the insertion section 61 to the crimping section 63, thereby further optimizing the contour relationship of the intermediate transition area of ​​the terminal and improving the integrity and functional adaptability of the terminal structure.

[0064] The insertion section 61, the limiting transition section 62, and the crimping section 63 are integrally formed.

[0065] Compared with existing technologies, traditional terminals, if connected in a separate manner, tend to increase the complexity of structural assembly and may create new weak points at the connection. This application improves the overall structural compactness and connection strength of the needle terminal 6 by integrating the insertion section 61, the limiting transition section 62, and the crimping section 63 into one unit, thereby reducing the structural instability risk caused by separate connections.

[0066] The limiting transition section 62 is disposed between the insertion section 61 and the crimping section 63, and is located between the insertion conductive part of the needle terminal 6 and the cable crimping connection part, so that the vibration load transmitted from the branch line to the needle terminal 6 is stress-transferred through the limiting transition section 62 before being transmitted to the insertion section 61, thereby reducing the stress concentration at the insertion part.

[0067] Compared with existing technologies, traditional terminals, when subjected to wire harness vibration, tend to directly transmit vibration loads to the insertion area, which can affect the connection stability of the insertion part after long-term use. This application addresses this issue by placing a limiting transition section 62 between the insertion conductive part and the cable crimp connection part. This allows the vibration load transmitted from the branch line to the pin terminal 6 to be buffered and transitioned at the limiting transition section 62 before being transmitted to the insertion section 61, thereby improving the problem of stress concentration in the insertion area of ​​traditional termination structures.

[0068] The heat shrink tubing 4 covers and fixes the starting section of each branch line, and the limiting transition section 62 limits and transitions the end position of each branch line, thereby forming a branch line stress relief structure and an end-connection stress transition structure at both ends of each branch line to improve the overall vibration resistance of the wire harness.

[0069] Compared with existing technologies, traditional wire harnesses often only focus on local protection at a single location, lacking overall stress optimization design from the branch line start point to the end termination point. This application utilizes heat shrink tubing 4 to form a branch line stress relief structure at the branch line start point and utilizes limiting transition section 62 to form a termination stress transition structure at the branch line end, so that the two ends of each branch line form a cooperative protection relationship, thereby improving the overall stability and reliability of the wire harness under vibration conditions.

[0070] Each of the independent circuits is respectively provided with the number tube 5 and the needle tube terminal 6 to form a circuit identification and termination position one-to-one anti-misconnection structure.

[0071] Compared to existing technologies, traditional wire harnesses lack a clear correspondence between loop identifiers and actual termination positions in multi-loop termination scenarios, easily leading to operational confusion during installation and maintenance. This application addresses this by assigning a number tube 5 and a pin tube terminal 6 to each independent loop, creating a one-to-one correspondence between loop identifiers and termination positions. This reduces the risk of wiring errors and improves accuracy during installation and maintenance.

[0072] The braided layer 32 and the sheath layer 33 together cover the core wire harness 31, and together with the outer shell 2 and the heat shrink tubing 4, form a continuous protective structure from the D-SUB connector 1 to the branch point.

[0073] Compared with existing technologies, the different protective parts of traditional wire harnesses are often relatively independent, making it difficult to form a continuous protective link from the interface end to the branch end. This application improves the problem of insufficient overall protection continuity of the wire harness by having the braided layer 32 and the sheath layer 33 jointly cover the core wire harness 31, and further cooperate with the outer shell 2 and heat shrink tubing 4, thereby constructing a continuous protective structure from the D-SUB connector 1 to the branch end.

[0074] The working process of this embodiment is as follows: First, connect the D-SUB connector 1 to the port of the AOI inspection equipment, and then cover and protect the connection part with the housing 2; Subsequently, the power signal and / or control signal output by the device are transmitted centrally by the multi-core wire 3. The core wire bundle 31 is used for signal transmission, and the braided layer 32 and the sheath layer 33 are used to form the external protective structure of the cable. When the signal is transmitted to the branching part, multiple branch lines are branched outward through the branching protection area covered by the heat shrink tubing 4. Next, the different independent circuits are identified and marked by the number tubes 5 installed on each branch line; Finally, the needle terminals 6 at the ends of each branch line establish a plug-in conductive relationship with the terminal load. The plug-in section 61 is used for terminal plug-in conductivity, the crimp section 63 is used for connection to the branch line, and the limiting transition section 62 is located between the two, providing positioning and stress transition functions, thereby achieving a reliable branch connection with multiple circuits at a single interface. During this process, the heat shrink tubing 4 provides stress relief at the starting section of the branch line, and the limiting transition section 62 provides stress transition at the end of the branch line. These two components work together to improve the overall connection stability and vibration resistance of the harness.

[0075] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A wiring harness for an AOI (Automated Optical Inspection) device, characterized in that, include: The connector assembly includes a D-SUB connector for mating with AOI inspection equipment and a housing disposed on the outside of the D-SUB connector; The cable assembly includes a multi-core wire electrically connected to the D-SUB connector; A wire protection component is disposed at the end of the multi-core wire away from the D-SUB connector; An identification component is disposed on the side of the branch protection component away from the multi-core wire; The termination component is located on the side of the marking component away from the branch protection component; The multi-core wire branches out into multiple branch lines at the branch protection component, and the identification component is respectively disposed on each of the branch lines. The termination component is disposed at the end of each of the branch lines, so that the D-SUB connector establishes an electrical connection with the terminal load through the multi-core wire, each of the branch lines and the termination component.

2. The AOI inspection equipment wiring harness according to claim 1, characterized in that: The outer shell covers the outside of the D-SUB connector and is connected to one end of the multi-core wire to protect the connection between the D-SUB connector and the multi-core wire.

3. The AOI inspection equipment wiring harness according to claim 1, characterized in that: The multi-core wire, from the inside out, includes a core wire bundle, a braided layer, and a sheath layer.

4. The AOI inspection equipment wiring harness according to claim 1, characterized in that: The branch line protection component is a heat shrink tubing, which is sleeved on the outside of the branching part of the multi-core wire and covers the starting section of each branch line to provide insulation protection and stress relief for the branching transition area.

5. The AOI inspection equipment wiring harness according to claim 1, characterized in that: The identification component is a number tube, and each number tube is respectively sleeved on the corresponding branch line for identifying and marking different branch circuits.

6. The AOI inspection equipment wiring harness according to claim 1, characterized in that: The termination assembly includes needle terminals that are connected to each of the branch lines in a one-to-one correspondence. The needle terminal includes, along its length, a insertion section, a limiting transition section, and a crimping section.

7. The AOI inspection equipment wiring harness according to claim 6, characterized in that: The limiting transition section is connected between the plug section and the crimping section, and the outer contour dimension of the limiting transition section changes along the direction from the plug section to the crimping section to form an irregular transition structure.

8. The AOI inspection equipment wiring harness according to claim 6 or 7, characterized in that: The limiting transition section is used to limit and position the assembly position of the needle tube terminal, and to form a stress transition at the connection between the cable and the needle tube terminal, so as to improve the vibration resistance of the termination part.

9. The AOI inspection equipment wiring harness according to claim 6, characterized in that: The limiting transition section has an irregular outer contour that varies along the length direction of the needle tube terminal to form a guide and positioning part during the assembly process of the needle tube terminal.

10. The AOI inspection equipment wiring harness according to claim 6, characterized in that: The insertion section, the limiting transition section, and the crimping section are integrally formed.

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