Wire harness quick switching device and wire harness quick switching method

Abstract

This invention discloses a wire harness quick switching device and method. The wire harness quick switching device includes a housing, several take-up reels, and a wire harness selector. The housing has a central shaft and several wire harness storage cavities, which are arranged around the central shaft along its axial direction. The wire harness selector is sleeved on the central shaft and can move axially and rotate circumferentially. Each take-up reel is housed in a wire harness storage cavity and sleeved around the wire harness selector. The wire harness selector has pins corresponding to the take-up reels, and each take-up reel has a pin groove for engaging the pins and a movable groove connecting the pin grooves. When the wire harness selector selects a take-up reel, it engages the corresponding pin in the pin groove of the take-up reel, thus fixing the take-up reel relative to the wire harness selector. This invention achieves one-to-one modular storage of wire harnesses, enables selective driving of multiple take-up reels by a single power source, and achieves rapid wire harness switching, meeting the precise control requirements of on-demand linkage in mechanical transmission.

Description

Technical Field

[0001] This invention relates to the field of wire harness testing technology, and in particular to a wire harness rapid switching device and a wire harness rapid switching method. Background Technology

[0002] HIL (Hardware in Loop) systems simulate the real operating environment by mimicking the controlled object to achieve closed-loop testing, facilitating repeated testing, stress testing, and automated testing. HIL testing is an important means of verifying whether the functions and performance of the controller under test meet the requirements. Due to differences in controller models and test conditions, the signal definitions and interface specifications of the test harnesses vary, and a single HIL system needs to be compatible with multiple controller tests, making rapid harness switching and precise management urgently needed.

[0003] Currently, the field mostly adopts the "independent storage + manual plugging and unplugging" model: wire harnesses are stored separately in storage boxes, and during switching, wires are manually disconnected, retrieved, and their connections are checked, with labels used to confirm the type. As testing requirements upgrade (a single test bench is compatible with more than 5 types of controllers), the number of wire harnesses increases, and the existing model can no longer meet the efficiency and accuracy requirements, exhibiting the following drawbacks: a single manual plugging and unplugging takes 5-12 minutes, with switching time accounting for 15%-25% of the total testing time; manual back-and-forth trips are time-consuming, extending the R&D cycle; incorrect or missing connections lead to signal distortion and misjudgment of tests; manual verification is prone to errors, and the risk increases after labels wear off, potentially damaging the controller; open stacking of wire harnesses makes them difficult to find, manual registration of usage records is prone to omissions, making it difficult to trace maintenance and adaptation information, and troubleshooting is difficult; redundant wire harnesses are prone to tangling and wear, affecting operational neatness and safety.

[0004] Therefore, rapid switching and precise management of wire harnesses are key factors affecting the efficiency and reliability of HIL system construction. It is necessary to improve the rapid switching of wire harnesses to enhance efficiency and reliability. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a wire harness fast switching device and a wire harness fast switching method implemented by the device.

[0006] The technical solution adopted by the present invention to solve its technical problem is: to provide a wire harness quick switching device, including a cylindrical shell, a plurality of take-up reels and a wire harness selector; The outer casing is provided with a central axis and several relatively independent wire harness storage cavities. The several wire harness storage cavities are respectively arranged around the central axis and along the axial direction of the central axis. The wire harness selector is sleeved on the central axis and can move axially and rotate circumferentially relative to the central axis. Each wire take-up reel is housed in one of the wire harness storage cavities and is sleeved on the outer periphery of the wire harness selector. The wire harness selector is provided with pins corresponding to the distribution of the take-up reels, and each take-up reel is provided with a pin groove that engages the pin and a movable groove that communicates with the pin groove; When the wire harness selector selects one of the take-up reels, it engages the corresponding pin into the pin groove of the take-up reel, so that the take-up reel is relatively fixed to the wire harness selector and can rotate with the wire harness selector; the remaining pins are located in the movable grooves of the other corresponding take-up reels and rotate with the wire harness selector in the movable grooves.

[0007] Preferably, the outer casing is further provided with a wire harness connector groove that communicates with the wire harness storage cavity.

[0008] Preferably, the outer casing includes a cylinder closed at both ends, and at least one partition is provided inside the cylinder to divide the space inside the cylinder into at least two wire harness storage cavities; The first end of the cylinder is provided with a central hole that extends inward and penetrates the partition; the central shaft passes through the central hole, with one end of the central shaft located at the first end of the cylinder and the other end connected to the inner side of the second end of the cylinder.

[0009] Preferably, the wire harness selector includes a sleeve and a handle; the sleeve is sleeved on the central shaft along the central shaft axis, with one end of the sleeve outside the housing; the handle is connected to the end of the sleeve outside the housing.

[0010] Preferably, the sleeve is provided with a wire harness mark corresponding to the take-up reel; the wire harness mark protrudes from the sleeve or is recessed on the sleeve.

[0011] Preferably, the take-up reel includes a winding shaft and two baffles respectively connected to opposite ends of the winding shaft; the winding shaft has a central through hole, and the pin groove and the movable groove are disposed on the inner wall of the central through hole; The movable groove is an annular groove, and its depth is greater than the height of the pin; the pin groove is a slot that matches the pin.

[0012] Preferably, the wire harness quick switching device includes three take-up reels, namely a first take-up reel, a second take-up reel, and a third take-up reel arranged in sequence; The first take-up reel is provided with a pin groove and a movable groove, the movable groove being located on the side of the pin groove facing the second take-up reel; The second take-up reel is provided with a pin groove and two movable grooves respectively connected to opposite sides of the pin groove; The third take-up reel is provided with a pin groove and a movable groove, the movable groove being located on the side of the pin groove facing the second take-up reel.

[0013] Preferably, the wire harness selector is provided with three pins corresponding to the three take-up reels, and the three pins have the same structure and size; The length of the movable groove of the first take-up reel is equal to the length of the movable groove of the third take-up reel, and is equal to the sum of the lengths of the movable groove and the pin groove of the second take-up reel.

[0014] Preferably, the wire harness quick switching device further includes a wire harness wound on the take-up reel.

[0015] The present invention also provides a method for rapid switching of wire harnesses, employing the rapid switching device for wire harnesses described in any of the above claims, the method comprising the following steps: S1. Select the take-up reel to switch to; S2. By axially moving the wire harness selector, the pin corresponding to the take-up reel is engaged into the pin groove of the take-up reel; S3. Rotate the wire harness selector to drive the take-up reel to rotate around the central axis at the same time. The take-up reel releases or retracts the wire harness wound on it; the other take-up reels are relatively fixed.

[0016] The beneficial effects of this invention are as follows: By setting several take-up reels within the wire harness storage cavity of the outer casing, wire harnesses can be stored relatively independently and centrally, achieving "one-to-one" modular storage of wire harnesses, avoiding mixing, conforming to the principle of efficient component classification management in complex systems, and reducing the time for finding and organizing wire harnesses; by utilizing the dual action of "axial movement-radial rotation" of the wire harness selector, through the precise cooperation of pins and pin slots, a single power source can selectively drive multiple take-up reels, enabling rapid switching of wire harnesses and meeting the precise control requirements of "on-demand linkage" in mechanical transmission.

[0017] The wire harness rapid switching device of the present invention enables one simulator to connect to multiple devices under test (DUTs) and quickly switch the wire harness corresponding to the DUTs, thereby improving the efficiency and reliability of HIL system setup. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings: Figure 1 This is a schematic diagram of the external structure of a wire harness fast switching device according to an embodiment of the present invention; Figure 2 This is a schematic cross-sectional view of the wire harness quick switching device according to an embodiment of the present invention in the axial direction; Figure 3 This is a cross-sectional structural diagram of the housing in a wire harness quick switching device according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the take-up reel and the wire harness selector in a wire harness quick switching device according to an embodiment of the present invention; Figure 5 yes Figure 4 Cross-sectional structural diagram of the mid-load reel; Figure 6 yes Figure 4 A schematic diagram of the structure of the wire harness selector. Detailed Implementation

[0019] To provide a clearer understanding of the technical features, objectives, and effects of the present invention, specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0020] like Figure 1 , Figure 2 As shown, a wire harness quick switching device according to an embodiment of the present invention includes a housing 10, a plurality of take-up reels 20 and a wire harness selector 30, and may also include a wire harness (not shown) wound on the take-up reels 20.

[0021] The housing 10 has a central shaft 11 and several relatively independent wire harness storage cavities 100, which are arranged around the central shaft 11 and along its axial direction. A wire harness selector 30 is sleeved on the central shaft 11 and is axially movable and circumferentially rotatable relative to it. Each take-up reel 20 is sleeved around the outer periphery of the wire harness selector 30 and housed within a wire harness storage cavity 100. The wire harness selector 30 is detachably connected to the take-up reel 20, allowing selection of the reel 20 and driving its rotation relative to the housing 10 to release or retract the wire harness on it.

[0022] The outer casing 10 is cylindrical, preferably cylindrical. Several wire harness storage cavities 100 are axially distributed and relatively independent (not connected) within the outer casing 10, and the central axis 11 is located on the central axis of the outer casing 10 and passes through the wire harness storage cavity 100.

[0023] refer to Figure 2 and Figure 3 The outer casing 10 may specifically include a cylinder 12 closed at both ends, and the cylinder 12 is provided with at least one partition 13 to divide the space inside the cylinder 12 into at least two wire harness storage cavities 100 distributed axially.

[0024] The cylinder 12 has two opposite ends, namely the first end and the second end. The first end has a central hole 120 extending inward and penetrating through the partition 13. The central shaft 11 passes through the central hole 120. One end of the central shaft 11 is connected to the inside of the second end of the cylinder 12. The other end of the central shaft 11 is located at the first end of the cylinder 12 and can extend out of the first end or be flush with the end face of the first end, so as to provide axial upward balance and stable support for the wire harness selector 30.

[0025] Within the housing 10, the wire harness storage cavity 100 is an annular cavity surrounding the central axis 11. Adjacent wire harness storage cavities 100 are separated by partitions 13.

[0026] The central shaft 11 and the partition 13 can be integrally formed with the cylinder 12.

[0027] The outer casing 10 is also provided with a wire harness connector groove 110 that connects to the wire harness storage cavity 100. The wire harness enters and exits the wire harness storage cavity 100 through the wire harness connector groove 110, so as to be stored on the take-up reel 20 or released from the take-up reel 20. The wire harness connector groove 110 is located in the direction of wire harness take-up and release, and is specifically provided on the side of the cylindrical 12 of the outer casing 10.

[0028] The number and location of the wire harness connector slots 110 correspond to the wire harness storage cavity 100, and each wire harness storage cavity 100 has at least one wire harness connector slot 110 that connects to the outside of the outer shell 10.

[0029] Each wire harness storage cavity 100 contains a take-up reel 20. The outer circumference of the take-up reel 20 corresponds to the inner circumference of the cylinder 12. Preferably, the outer circumferential surface of the take-up reel 20 is in contact with the inner circumferential surface of the cylinder 12 or leaves a small gap, so that the wire harness can be completely stored on the take-up reel 20 and will not fall out into the gap between the take-up reel 20 and the cylinder 12, causing the wire harness to become tangled.

[0030] Combination Figures 3-5 The take-up reel 20 has a central through hole 210, which is sleeved around the wire harness selector 30 and the central shaft 11. It can be connected to or separated from the wire harness selector 30, so that it can rotate with the wire harness selector 30 or not move and rotate with the wire harness selector 30.

[0031] Specifically, the take-up reel 20 may include a winding shaft 21 and two baffles 22 respectively connected to opposite ends of the winding shaft 21; the outer peripheral shape of the baffles 22 determines the outer peripheral shape of the take-up reel 20. A central through hole 210 is provided on the winding shaft 21, and the take-up reel 20 is sleeved on the wire harness selector 30 with the winding shaft 21. The wire harness is wound on the winding shaft 21 and simultaneously constrained by the baffles 22 at both ends.

[0032] The wire harness selector 30 is movably sleeved on the central shaft 11 along its axial direction, and is located between the central shaft 11 and the take-up reel 20. It cooperates with the take-up reel 20 to selectively connect either of the take-up reels 20 and drive the take-up reel 20 to rotate.

[0033] Among them, combined Figure 2 , Figure 4 and Figure 5The wire harness selector 30 is equipped with pins 40 distributed corresponding to the take-up reels 20, and the distribution and number of pins 40 are consistent with those of the take-up reels 20. Each take-up reel 20 is provided with a communicating pin groove 23 and a movable groove 24; the pin groove 23 is used for the pins 40 to engage, so that the take-up reel 20 and the pins 40 are relatively fixed; the movable groove 24 is connected to at least one side of the pin groove 23, and the pins 40 can move from the pin groove 23 into the movable groove 24, and can rotate with the wire harness selector 30 within the movable groove 24. Therefore, the pin groove 23 is adapted to the pins 40, and the movable groove 24 is set larger than the pins 40 so as not to interfere with the pins 40.

[0034] When the wire harness selector 30 selects one of the take-up reels 20, it engages the corresponding pin 40 into the pin groove 23 of the take-up reel 20, so that the take-up reel 20 is relatively fixed to the wire harness selector 30 and can rotate with the wire harness selector 30; the remaining pins 40 are in the movable grooves 24 of the other corresponding take-up reels 20 and rotate with the wire harness selector 30 in the corresponding movable grooves 24.

[0035] The take-up reel 20 is mounted on the winding shaft 21 on the wire harness selector 30, and the pin groove 23 and the movable groove 24 are specifically set on the inner wall of the central through hole 210.

[0036] In a preferred embodiment, such as Figure 5 As shown, the pin groove 23 is a slot that matches the pin 40. That is, the depth, length, and width of the pin groove 23 are all set to correspond to the pin 40. When the pin 40 is a rectangular pin, the pin groove 23 is also a rectangular groove. The movable groove 24 is used so that the pin 40 will not interfere with the movable groove 24 when it rotates. Therefore, the movable groove 24 is at least greater than the height of the pin 40 in terms of depth. The movable groove 24 is preferably an annular groove that is circumferentially arranged along the inner wall of the central through hole 210.

[0037] Combination Figure 2 , Figure 4 and Figure 6 The cable harness selector 30 may further include a sleeve 31 and a handle 32. The sleeve 31 is sleeved on the central shaft 11 along the axial direction of the central shaft 11 such that the axial length of the sleeve 31 covers all the take-up reels 20. One end of the sleeve 31 is outside the housing 10, and the handle 32 is connected to the end of the sleeve 31 that is outside the housing 10.

[0038] The pin 40 protrudes from the sleeve 31. The handle 32 serves as the operating part of the wire harness selector 30. By holding the handle 32, the sleeve 31 is driven to move axially or rotate circumferentially, thereby realizing the axial movement or circumferential rotation of the wire harness selector 30.

[0039] The sleeve 31 may further be provided with a wire harness mark 50 corresponding to the take-up reel 20. The wire harness mark 50 protrudes from the sleeve 31 or is recessed into the sleeve 31. The wire harness mark 50 can not only indicate the take-up reel 20 selected by the wire harness selector 30, but also indicate the type / model of the corresponding wire harness.

[0040] The wire harness marking 50 visually presents key information about the wire harness, replacing traditional manual memorization and paper verification. This aligns with the "visual priority" information transmission principle in human-computer interaction and reduces recognition errors.

[0041] In one embodiment, the wire harness quick switching device includes three take-up reels 20, and the housing 10 has three wire harness storage cavities 100 that respectively accommodate the three take-up reels 20.

[0042] The three take-up reels 20 are further arranged sequentially as a first take-up reel 201, a second take-up reel 202, and a third take-up reel 203. The first take-up reel 201 has a pin groove 23 and a movable groove 24, with the movable groove 24 located on the side of the pin groove 23 facing the second take-up reel 202. The second take-up reel 202 has a pin groove 23 and two movable grooves 24 connected to opposite sides of the pin groove 23. The third take-up reel 203 has a pin groove 23 and a movable groove 24, with the movable groove 24 located on the side of the pin groove 23 facing the second take-up reel 202.

[0043] The length of the movable groove 24 of the first take-up reel 201 is equal to the length of the movable groove 24 of the third take-up reel 203, and is equal to the sum of the lengths of the movable groove 24 and the pin groove 23 of the second take-up reel 202.

[0044] Corresponding to the three take-up reels 20, the sleeve 31 of the wire harness selector 30 is provided with three pins 40 corresponding to the three take-up reels 20. The three pins 40 have the same structure and size.

[0045] Combination Figure 2 and Figure 5 When the cable harness selector 30 selects the first take-up reel 201 for cable harness take-up and untake-up, the axial movement of the cable harness selector 30 causes the first pin 40 to move into the pin groove 23 of the first take-up reel 200, thus fixing the first take-up reel 201 relative to the cable harness selector 30. At this time, the second pin 40 is located in the movable groove 24 of the second take-up reel 202 closest to the first take-up reel 201, and the third pin 40 is located in the movable groove 24 of the third take-up reel 203 (specifically, at the end of the movable groove 24 furthest from the pin groove 23).

[0046] When the wire harness selector 30 selects the second take-up reel 201 for take-up and untake-up of the wire harness, the axial movement of the wire harness selector 30 causes the second pin 40 to move into the pin groove 23 of the second take-up reel 202, thus fixing the second take-up reel 202 relative to the wire harness selector 30. At this time, the first pin 40 is located in the movable groove 24 of the first take-up reel 201 (specifically, at the end of the movable groove 24 that connects to the pin groove 23), and the third pin 40 is located in the movable groove 24 of the third take-up reel 203 (specifically, at the end of the movable groove 24 that connects to the pin groove 23).

[0047] When the wire harness selector 30 selects the third take-up reel 203 for wire harness take-up and untake-up, the axial movement of the wire harness selector 30 causes the third pin 40 to move into the pin groove 23 of the third take-up reel 203, thus fixing the third take-up reel 203 relative to the wire harness selector 30. At this time, the first pin 40 is located in the movable groove 24 of the first take-up reel 201 (specifically, at the end of the movable groove 24 away from the pin groove 23), and the second pin 40 is located in the movable groove 24 of the second take-up reel 202 closest to the third take-up reel 203, as shown below. Figure 2 The state shown.

[0048] The cable harness marking 50 may include three markings corresponding to three pins 40 distributed along the axial direction of the sleeve 31 and located on the end of the sleeve 31 near the handle 32. The three markings, from near the handle 32 to away from the handle 32, correspond to the third take-up reel 203, the second take-up reel 202, and the first take-up reel 201, respectively. When the cable harness selector 30 is connected to the first take-up reel 201 via the pins 40, the marking corresponding to the first take-up reel 201 is exposed outside the housing 10, i.e., all three markings are exposed outside the housing 10. When the cable harness selector 30 is connected to the second take-up reel 202 via the pins 40, the marking corresponding to the second take-up reel 202 is exposed outside the housing 10, i.e., the first two markings are exposed outside the housing 10. When the cable harness selector 30 is connected to the third take-up reel 203 via the pins 40, the marking corresponding to the third take-up reel 203 is exposed outside the housing 10, i.e., the first marking is exposed outside the housing 10.

[0049] The wire harness quick switching device of the present invention can realize the storage of wire harnesses and the switching of wire harnesses.

[0050] The wiring harness storage (pre-installation) procedure is as follows: Take three different or the same type of controller test harnesses, insert the connector at one end of the harness into the harness connector slot 110, and pull the other end to the winding shaft 21 of the take-up reel 20 and fix it.

[0051] The handle 32 of the axially moved wire harness selector 30 is used to observe the wire harness mark 50 so that the corresponding pin 40 is engaged in the pin groove 23. Then, the handle 32 is rotated radially so that the winding shaft 21 rotates synchronously with the sleeve 31 along the outer side of the central shaft 11, thereby making the wire harness tightly wound on the winding shaft 21 until the wire harness connector is fully engaged in the corresponding wire harness connector groove 110, thus completing the pre-installation of the wire harness.

[0052] When the wire harness quick switching device of the present invention is used for wire harness switching, the corresponding wire harness quick switching method may include the following steps: S1. Select the take-up reel 20 to switch to.

[0053] S2. By axially moving the wire harness selector 30, the pin 40 corresponding to the take-up reel 20 is engaged into the pin groove 23 of the take-up reel 20.

[0054] S3. Rotate the wire harness selector 30 to drive the take-up reel 20 to rotate around the central axis 11. The take-up reel 20 releases or takes up the wire harness wrapped on it. The other take-up reels 20 are relatively fixed and do not rotate with the wire harness selector 30.

[0055] The following example, using three closing dials 20 (first closing dial 201, second closing dial 202, and third closing dial 203), further illustrates this point: (a) Switch to the first wire harness on the first take-up reel 201 Hold the handle 32 and push the sleeve 31 along the central axis 11 so that the first pin 40 on the sleeve 31 passes through the movable groove 24 of the first take-up reel 201 until it is precisely engaged in the pin groove 23 (at this time, the other pins 40 remain separated from their corresponding pin grooves 23). During the process, the wire harness mark 50 can be used to confirm whether the pins 40 and pin grooves 23 are precisely engaged.

[0056] Turning handle 32 clockwise causes sleeve 31 to rotate synchronously around central axis 11. Through the engagement of pin 40 and pin groove 23, sleeve 31 drives first take-up reel 201 to rotate around central axis 11 and release the wound first wire harness. The operator takes out wire harness connector from wire harness connector groove 110, connects to the corresponding controller, and begins testing.

[0057] (ii) After the test is completed, retract the first wiring harness. Disconnect the first wire harness from the controller, turn the handle 32 counterclockwise to drive the sleeve 31 and pin 40 to rotate in the opposite direction, thereby driving the first take-up reel 201 to rotate in the opposite direction, rewinding and retrieving the first wire harness until the wire harness connector is fully engaged in the wire harness connector groove 110.

[0058] (iii) Switch to the second or third wiring harness The operation procedure is the same as that of the first wire harness: push the sleeve rod 31 so that the pin 40 is engaged in the second pin groove 23 of the second take-up reel 202 or the third pin 323 is engaged in the pin groove 23 of the third take-up reel 203. Turn the handle 32 to drive the second take-up reel 202 or the third take-up reel 203 to rotate, thereby realizing the release and winding of the second or third wire harness.

[0059] This invention allows for flexible expansion of the wire harness storage space (i.e., the wire harness storage cavity 100 can be set with four or more) depending on the different wire harness connectors, adapting to different types of wire harnesses with different connectors. The outer shell 10 can physically isolate different types of wire harnesses, preventing tangling and mixing during storage and handling, and can also form external protection for the device, protecting the internal components and wire harnesses, and isolating the internal components from the influence of external dust, oil, and minor collisions.

[0060] In summary, this invention enables modular storage of wire harnesses on a "one-to-one" basis, avoiding mixing and conforming to the principle of efficient component classification management in complex systems, reducing the time spent searching and organizing wire harnesses. By utilizing the dual action of "axial movement-radial rotation (circumferential rotation)" of the wire harness selector, and through the precise cooperation of the pin and the pin groove, a single power source can selectively drive multiple take-up reels, eliminating the risk of wire harness misconnection and meeting the precise control requirements of "on-demand linkage" in mechanical transmission.

[0061] The wire harness quick switching device of the present invention enables centralized storage and rapid switching of HIL test wire harnesses. Using this device, a single simulator can interface with multiple devices under test (DUTs), quickly switching the wire harness corresponding to each DUT, thus improving the efficiency and reliability of HIL system setup.

[0062] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A wire harness quick switching device, characterized in that, It includes a cylindrical outer casing, several cable reels, and a cable harness selector; The outer casing is provided with a central axis and several relatively independent wire harness storage cavities. The several wire harness storage cavities are respectively arranged around the central axis and along the axial direction of the central axis. The wire harness selector is sleeved on the central axis and can move axially and rotate circumferentially relative to the central axis. Each wire take-up reel is housed in one of the wire harness storage cavities and is sleeved on the outer periphery of the wire harness selector. The wire harness selector is provided with pins corresponding to the distribution of the take-up reels, and each take-up reel is provided with a pin groove that engages the pin and a movable groove that communicates with the pin groove; When the wire harness selector selects one of the take-up reels, it engages the corresponding pin into the pin groove of the take-up reel, so that the take-up reel is relatively fixed to the wire harness selector and can rotate with the wire harness selector; the remaining pins are located in the movable grooves of the other corresponding take-up reels and rotate with the wire harness selector in the movable grooves.

2. The wire harness quick switching device according to claim 1, characterized in that, The outer casing is also provided with a wire harness connector groove that connects to the wire harness storage cavity.

3. The wire harness quick switching device according to claim 1, characterized in that, The outer casing includes a cylinder closed at both ends, and at least one partition is provided inside the cylinder to divide the space inside the cylinder into at least two wire harness storage cavities; The first end of the cylinder is provided with a central hole that extends inward and penetrates the partition; the central shaft passes through the central hole, with one end of the central shaft located at the first end of the cylinder and the other end connected to the inner side of the second end of the cylinder.

4. The wire harness quick switching device according to claim 1, characterized in that, The harness selector includes a sleeve and a handle; the sleeve is sleeved on the central shaft along the central shaft axis, with one end of the sleeve outside the housing; the handle is connected to the end of the sleeve outside the housing.

5. The wire harness quick switching device according to claim 4, characterized in that, The sleeve is provided with a wire harness mark corresponding to the take-up reel; the wire harness mark protrudes from the sleeve or is recessed on the sleeve.

6. The wire harness quick switching device according to claim 1, characterized in that, The take-up reel includes a winding shaft and two baffles respectively connected to opposite ends of the winding shaft; the winding shaft has a central through hole, and the pin groove and the movable groove are disposed on the inner wall of the central through hole; The movable groove is an annular groove, and its depth is greater than the height of the pin; the pin groove is a slot that matches the pin.

7. The wire harness quick switching device according to claim 6, characterized in that, The wire harness quick switching device includes three take-up reels, namely a first take-up reel, a second take-up reel, and a third take-up reel arranged in sequence. The first take-up reel is provided with a pin groove and a movable groove, the movable groove being located on the side of the pin groove facing the second take-up reel; The second take-up reel is provided with a pin groove and two movable grooves respectively connected to opposite sides of the pin groove; The third take-up reel is provided with a pin groove and a movable groove, the movable groove being located on the side of the pin groove facing the second take-up reel.

8. The wire harness quick switching device according to claim 7, characterized in that, The wire harness selector is provided with three pins corresponding to the three take-up reels, and the three pins have the same structure and size; The length of the movable groove of the first take-up reel is equal to the length of the movable groove of the third take-up reel, and is equal to the sum of the lengths of the movable groove and the pin groove of the second take-up reel.

9. The wire harness quick switching device according to any one of claims 1-8, characterized in that, The wire harness quick switching device also includes a wire harness wound on the take-up reel.

10. A method for rapid switching of wire harnesses, characterized in that, The wire harness fast switching device according to any one of claims 1-9, the wire harness fast switching method includes the following steps: S1. Select the take-up reel to switch to; S2. By axially moving the wire harness selector, the pin corresponding to the take-up reel is engaged into the pin groove of the take-up reel; S3. Rotate the wire harness selector to drive the take-up reel to rotate around the central axis at the same time. The take-up reel releases or retracts the wire harness wound on it; the other take-up reels are relatively fixed.

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