Cable retraction device and rear curtain of carriage and vehicle

Abstract

This application provides a cable retraction device, a rear curtain for a vehicle, and a vehicle. The cable retraction device includes: a support portion, on the inner wall of which a pivot is disposed; a housing, which is sleeved on and movably connected to the pivot, and has an accommodating space within the housing; an elastic element, wound within the accommodating space, one end of which is connected to the pivot and the other end to the inner wall of the housing; a storage component, disposed at the end of the housing away from the support portion; and a cable harness, disposed on the outer wall of the storage component and extending or retracting via the storage component. Through this method, the extension and retraction of the cable harness can be controlled by the elastic element, allowing the length of the cable harness to be arbitrarily adjusted.

Description

Technical Field

[0001] This application relates to the technical field of vehicle tail curtains, and in particular to a cable retraction device, a vehicle tail curtain, and a vehicle. Background Technology

[0002] With the rapid development of the automotive industry, automotive equipment and technology have significantly improved, especially advanced automotive technology, which has basically met the requirements of special applications and gradually realized automation and semi-automation, thereby reducing labor intensity and improving efficiency. Among them, the road transportation and logistics industries have also developed rapidly along with the development of automotive technology. Roller blinds are used on the cargo compartments of transport vehicles to protect the transported goods, and decorative light strips are installed on one end of the roller blinds. However, in the existing technology, the decorative light strips are mostly directly fixed to the roller blinds, and the length of the decorative light strips cannot be adjusted arbitrarily, thus affecting the user experience. Utility Model Content

[0003] This application provides a thread take-up device to solve the problem that the length of decorative thread cannot be adjusted in the prior art.

[0004] To address the aforementioned technical problems, this application provides a take-up device, comprising: a carrier portion, on the inner wall of which a rotating shaft is disposed; a housing, which is sleeved on and movably connected to the rotating shaft, and has an accommodating space within the housing; an elastic element, which is wound and disposed within the accommodating space, with one end connected to the rotating shaft and the other end connected to the inner wall of the housing; a storage component, which is disposed at the end of the housing away from the carrier portion; and a wire harness, which is wound and connected to the outer wall of the storage component and extends or retracts through the storage component.

[0005] The housing has an opening at the end away from the support portion that communicates with the accommodating space, and at least one slot is provided at the edge of the opening; the storage component has at least one protrusion at the end near the housing, and the protrusion is connected to the slot.

[0006] The storage component includes a first limiting plate, a second limiting plate, and a connecting part. The two ends of the connecting part are connected to the first limiting plate and the second limiting plate, respectively. The wire harness is disposed on the outer side wall of the connecting part. The first limiting plate is disposed at one end of the connecting part near the housing, and the protrusion is disposed at the edge of the first limiting plate.

[0007] The outer wall of the rotating shaft has a groove; one end of the elastic element has a bending part, which is engaged in the groove, and the other end of the elastic element is connected to the inner wall of the housing.

[0008] The connecting part is provided with a first through hole, which is arranged along the axial direction of the connecting part. The side wall of the connecting part is provided with a second through hole that communicates with the first through hole. The first end of the wire harness is connected to the external component through the first through hole and the second through hole, and the second end is wound around the outer side wall of the connecting part.

[0009] To address the aforementioned issues, a second aspect of this application also provides a rear curtain device for a vehicle, comprising: a cord retraction device and a roller blind assembly of any of the above-mentioned components.

[0010] The roller blind assembly includes: a roller blind section, an annular cavity provided on the inner wall of the bearing section, the roller blind section extending and retracting through the annular cavity, and a wire harness at least partially provided on the side of the roller blind section; and a support rod, which is provided on the bearing section perpendicular to the axis of rotation, and a sliding groove communicating with the annular cavity is provided on the support rod, with the roller blind section movably connected to the sliding groove.

[0011] The roller shutter section has a rubber component on its side, and the wire harness is located inside the rubber component and is at least partially exposed on the rubber component. The second end of the wire harness is connected to the end of the roller shutter section.

[0012] The rear curtain device of the carriage also includes a drive assembly, which is mounted on the support part. The drive assembly includes a drive part and a transmission part connected to the drive part. The transmission part is connected to the roller blind part to drive the roller blind part to extend and retract.

[0013] To address the aforementioned problems, this application also provides a vehicle, including: the rear curtain device of any of the above-mentioned features.

[0014] The beneficial effects of this application are as follows: Unlike the prior art, this application movably connects the housing and the storage component on the rotating shaft of the bearing part, and sets an elastic element in the accommodating space of the housing, with one end connected to the rotating shaft and the other end connected to the inner side wall of the housing. The wire harness is set on the outer side wall of the storage component. When the wire harness needs to be stored, the housing and the storage component rotate relative to the rotating shaft under the action of the elastic element, thereby retracting the wire harness to the outer side wall of the storage component. That is, the length of the wire harness can be adjusted arbitrarily. Attached Figure Description

[0015] Figure 1 This is an exploded view of the wire taking-up device of this application;

[0016] Figure 2 This is an exploded view of the connection between the shell and the housing in this application;

[0017] Figure 3 This is a structural schematic diagram of one embodiment of the housing component of this application;

[0018] Figure 4 This is a schematic diagram of the connection between the roller shutter assembly and the support part in this application;

[0019] Figure 5 This application Figure 4 A structural schematic diagram of the enlarged view at point A in the middle;

[0020] Figure 6 This is a schematic diagram of the structure of an embodiment of the carrier part of this application;

[0021] Figure 7 This is a structural schematic diagram of an embodiment of the rear curtain of the carriage in this application. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0024] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0025] Please see Figure 1 , Figure 1 This is an exploded view of the take-up device provided in this application.

[0026] This application provides a wire take-up device. For example... Figure 1As shown, the take-up device of this embodiment includes: a support part 10, a housing 20, an elastic member 30, a storage member 40, and a wire harness 50. A rotating shaft 11 is provided on the inner side wall of the support part 10. The housing 20 is sleeved on the rotating shaft 11 and movably connected to the rotating shaft 11. An accommodating space 21 is formed inside the housing 20. The elastic member 30 is wound and disposed in the accommodating space 21. One end of the elastic member 30 is connected to the rotating shaft 11, and the other end is connected to the inner side wall of the housing 20. The storage member 40 is connected to the housing 20. The wire harness 50 is wound and connected to the outer side wall of the storage member 40 and extends or retracts through the storage member 40.

[0027] In an optional embodiment, a rotating shaft 11 is provided on the support portion 10. The rotating shaft 11 is fixedly mounted on the inner sidewall of the support portion 10, and the housing 20 is sleeved on the rotating shaft 11, that is, the housing 20 can rotate along the axial direction of the rotating shaft 11. An accommodating space 21 is formed inside the housing 20 to accommodate an elastic member 30. One end of the elastic member 30 is connected to the rotating shaft 11, and the other end is connected to the inner sidewall of the housing 20. That is, under the elastic force of the elastic member 30, the housing 20 can rotate relative to the rotating shaft 11. A storage member 40 is provided at the end of the housing 20 away from the support portion 10, that is, the storage member 40 can be fixedly connected to the housing 20. Under the elastic force of the elastic member 30, when the housing 20 rotates, it can drive the storage member 40 to rotate. The wire harness 50 is wound and connected to the outer wall of the storage component 40, and extends and retracts through the storage component 40. That is, the wire harness 50 is wrapped around the outer wall of the storage component 40. When the storage component 40 rotates, it can drive the wire harness 50 to extend or retract on the outer wall of the storage component 40.

[0028] In this embodiment, during the installation of the take-up device, elastic potential energy can be stored in the elastic element 30. That is, after the take-up device is installed, without external force, it can drive the housing 20 and the storage component 40 to rotate, thereby causing the wire harness 50 to extend or retract. Therefore, after the take-up device is installed, the wire harness 50 can be kept in a straight state under the elastic force of the elastic element 30. After the take-up device is installed, the wire harness 50 can be snapped onto an external component, thus avoiding the release of the elastic potential energy of the elastic element 30. Specifically, when the wire harness 50 needs to extend, one end of the wire harness 50 can be pulled, causing the wire harness 50 to extend through the storage component 40. When the wire harness 50 is pulled out, since the wire harness 50 is wrapped around the storage component 40, the extension of the wire harness 50 can cause the storage component 40 and the housing 20 to rotate in the first direction. The first direction can be either clockwise or counterclockwise. Specifically, when the wire harness 50 is pulled out, causing the housing 20 and the storage component 40 to rotate in the first direction, the elastic potential energy of the elastic component 30 gradually increases. When it is necessary to retract the wire harness 50, under the elastic force of the elastic component 30, the housing 20 and the storage component 40 can be rotated in the second direction. Specifically, when the housing 20 and the storage component 40 rotate in the second direction, the elastic potential energy of the elastic component 30 gradually decreases. When the first direction is clockwise, the second direction is counterclockwise.

[0029] In one optional embodiment, a pin is provided at the end of the rotating shaft 11 away from the bearing portion 10. This pin can be movably connected to the housing 20, that is, the pin can limit the housing 20. When the housing 20 rotates on the rotating shaft 11, the pin can limit the housing 20 to prevent it from disengaging from the rotating shaft 11 during rotation. In other embodiments, other devices can also be provided on the rotating shaft 11. For example, a bearing can be provided at the connection position between the rotating shaft 11 and the housing 20 to limit the connection position between the housing 20 and the rotating shaft 11 and prevent the housing 20 from disengaging from the rotating shaft 11. The specific configuration can be set according to actual needs, and this application does not limit it.

[0030] In an optional embodiment, the elastic element 30 is a spring-loaded spring, that is, the elastic element 30 is a wound spring sheet. One end of the inner ring of the wound elastic element 30 is connected to the rotating shaft 11, and one end of the outer ring of the elastic element 30 is connected to the inner side wall of the housing 20. That is, when the housing 20 rotates, the elastic potential energy can be stored in the elastic element 30. When the wire harness 50 is pulled out, the elastic potential energy of the elastic element 30 gradually increases. When the wire harness 50 is no longer needed, that is, when the wire harness 50 needs to be retracted, the elastic force of the elastic element 30 can drive the housing 20 and the storage component 40 to rotate, so that the wire harness 50 gradually winds around the outer side wall of the storage component 40.

[0031] In the above embodiment, the housing 20 and the storage member 40 are movably connected on the rotating shaft 11 of the bearing part 10, and an elastic member 30 is provided in the accommodating space 21 of the housing 20, with one end connected to the rotating shaft 11 and the other end connected to the inner side wall of the housing 20. The wire harness 50 is provided on the outer side wall of the storage member 40. When the wire harness 50 needs to be stored, the housing 20 and the storage member 40 rotate relative to the rotating shaft 11 under the action of the elastic member 30, thereby retracting the wire harness 50 to the outer side wall of the storage member 40. That is, the length of the wire harness 50 can be adjusted at will.

[0032] In an optional embodiment, such as Figure 2 As shown, the end of the housing 20 away from the support portion 10 has an opening 22 communicating with the accommodating space 21, and at least one slot 23 is provided at the edge of the opening 22, which is combined with Figure 3 As shown, the storage component 40 has at least one protrusion 43 at one end near the housing 20, and the protrusion 43 is connected to the slot 23. When installing the housing 20 and the storage component 40, the protrusion 43 of the storage component 40 can be engaged with the slot 23 of the housing 20, so that when the elastic member 30 drives the housing 20 to rotate on the rotating shaft 11, the storage component 40 can be rotated synchronously. The end of the housing 20 away from the support part 10 has an opening 22 that communicates with the accommodating space 21. The slot 23 on the housing 20 can have multiple slots 23 at the edge of the opening 22. For example, four slots 23 can be arranged in an array at the edge of the opening 22. Correspondingly, the storage component 40 has four protrusions 43 near the edge of the opening 22. These protrusions 43 are also arranged in an array at the edge of the storage component 40 and correspond one-to-one with the four slots 23. In other embodiments, the number of slots 23 and protrusions 43 can be set according to requirements, such as 3, 5, 6, etc., and this application does not make a specific limitation here.

[0033] In this embodiment, the slot 23 provided on the housing 20 can be an "L"-shaped slot 23. When installing the housing 20 and the storage component 40, the protrusion 43 on the storage component 40 can be rotated and engaged into the slot 23 to fix the storage component 40 and the housing 20. In other embodiments, the storage component 40 and the housing 20 can also be fixed by welding or other methods, which are not specifically limited here.

[0034] In an optional embodiment, such as Figure 3As shown, the storage component 40 includes a first limiting disc 41, a second limiting disc 42, and a connecting portion 44. The first limiting disc 41 and the second limiting disc 42 are disposed at both ends of the connecting portion 44, and the wire harness 50 is disposed on the outer side wall of the connecting portion 44. The storage component 40 includes a connecting portion 44, and the wire harness 50 can be wound around the outer side wall of the connecting portion 44. The first limiting disc 41 and the second limiting disc 42 are disposed at both ends of the connecting portion 44. When the wire harness 50 is wound on the storage component 40, the first limiting disc 41 and the second limiting disc 42 can limit the winding position of the wire harness 50, thereby preventing the wire harness 50 from detaching from the connecting portion 44 during winding. The first limiting disc 41 is disposed at one end of the connecting portion 44 near the housing 20, and the protrusion 43 is disposed at the edge of the first limiting disc 41.

[0035] In an optional embodiment, a groove 12 is provided on the outer side wall of the rotating shaft 11. One end of the elastic member 30 is provided with a bent portion (not shown), which is engaged in the groove 12, and the other end of the elastic member 30 is connected to the inner side wall of the housing 20. A bent portion is provided at one end of the elastic member 30, located on the inner side of the elastic member 30, and a groove 12 is provided on the outer side wall of the rotating shaft 11. When connecting the elastic member 30 to the rotating shaft 11, the bent portion on the elastic member 30 can be engaged in the groove 12. The elastic member 30 and the rotating shaft 11 can also be connected in other ways, such as by pins or welding, which are not specifically limited herein.

[0036] In an optional embodiment, the connecting portion 44 is provided with a first through hole 45, which is arranged along the axial direction of the connecting portion 44. A second through hole (not shown) communicating with the first through hole 45 is provided on the side wall of the connecting portion 44. The first end of the wire harness 50 is connected to an external device via the first through hole 45 and the second through hole, and the second end is wound around the outer side wall of the connecting portion 44. The first through hole 45 is provided on the connecting portion 44 along its axial direction, meaning the first through hole 45 penetrates the connecting portion 44 along its axial direction, thus the connecting portion 44 is an annular column. The second through hole is opened on the side wall of the connecting portion 44, communicating with the first through hole 45 via the outer side wall of the connecting portion 44. The first end of the wire harness 50 is inserted into the first through hole 45 via the second through hole and connected to an external device, such as an external power supply, to power the wire harness 50. The second end of the wire harness 50 is wound around the outer side wall of the connecting portion 44.

[0037] In this embodiment, the second end of the wire harness 50 is connected to an external device via the second through hole and the first through hole 45. Specifically, the second end of the wire harness 50 is connected to the external device via the second through hole, the first through hole 45 and the rotating shaft 11. That is, the center of the rotating shaft 11 is hollow, meaning that the wire harness 50 can be connected to the external device through the center of the rotating shaft 11.

[0038] This application also provides a rear curtain for a vehicle, such as Figure 4 As shown, the rear curtain of the carriage includes: a cord retraction device and a roller blind assembly 60, wherein the cord retraction device is the cord retraction device of any of the above embodiments.

[0039] In an optional embodiment, combined with Figure 6 As shown, the roller blind assembly 60 includes a roller blind portion 61 and a support rod 62. An annular cavity 13 is provided on the inner wall of the support portion 10. The roller blind portion 61 extends and retracts through the annular cavity 13. At least a portion of the wire harness 50 is disposed on the side of the roller blind portion 61. The support rod 62 is disposed on the support portion 10 perpendicular to the axis of the rotating shaft 11. A sliding groove (not shown) communicating with the annular cavity 13 is provided on the support rod 62, and the roller blind portion 61 is movably connected to the sliding groove. An annular cavity 13 is provided on the inner wall of the support portion 10. One end of the annular cavity 13 communicates with a wire take-up device disposed within the support portion 10, and the other end of the annular cavity 13 communicates with the support rod 62. The roller blind portion 61 can move within the annular cavity 13, extending and retracting through it. That is, when the roller blind portion 61 needs to be retracted, it can retract into the annular cavity 13; when the roller blind portion 61 needs to be extended, it can extend within the annular cavity 13. It is understandable that the central axis of the roller blind 61 is parallel or collinear with the central axis of the ring, that is, the central axis of the roller blind 61 is parallel or collinear with the central axis of the rotating shaft 11. In other words, when the wire bundle 50 extends and retracts in the winding device, it can extend and retract synchronously with the roller blind 61.

[0040] In this embodiment, a support rod 62 is provided on the support part 10. The support rod 62 is arranged on the support part 10 perpendicular to the axis of the rotating shaft 11. The support rod 62 is provided with a groove communicating with the annular cavity 13. The roller blind part 61 is movably connected to the groove. When the roller blind part 61 needs to extend, it can extend through the annular cavity 13 and slide out within the groove of the support rod 62. When the roller blind part 61 needs to be retracted, it can slide and retract within the groove of the support rod 62 and be retracted into the annular cavity 13. When the roller blind part 61 extends through the annular cavity 13 and the support rod 62, it can drive the wire bundle 50 in the take-up device to extend. The wire bundle 50 can be a decorative wire, that is, when the roller blind part 61 extends and drives the wire bundle 50 to extend, it can decorate the roller blind of the carriage. When the roller blind part 61 retracts into the annular cavity 13, the wire bundle 50 can be retracted and wound around the outer wall of the take-up member 40 under the action of the elastic member 30.

[0041] In an optional embodiment, when it is necessary to decorate the rear curtain of the vehicle, the roller blind 61 can slide out onto the support rod 62 via the annular cavity 13 and the slide groove, and the support rod 62 supports the roller blind 61. When the roller blind 61 slides out, it can drive the wire harness 50 to move and extend, thereby driving the storage component 40 and the housing 20 to rotate along the first direction on the rotating shaft 11, thereby gradually increasing the elastic potential energy of the elastic component 30. Under the elastic force of the elastic component 30, the wire harness 50 can be kept in a straight state, thereby preventing the wire harness 50 from bending and failing to achieve the preset decorative effect. Then, when storing the roller blind 61, the roller blind 61 slides and retracts into the annular cavity 13 via the slide groove, and the wire harness 50 retracts and wraps around the storage component 40 under the elastic force of the elastic component 30. Specifically, under the elastic force of the elastic member 30, the housing 20 and the storage member 40 are rotated along the second direction, thereby causing the wire harness 50 to be wound around the outer wall of the storage member 40. The first direction and the second direction are opposite directions.

[0042] In an optional embodiment, two winding devices may be provided, arranged opposite to each other, with the roller blind 61 positioned between the two winding devices. That is, two support rods 62 are provided, each corresponding to one of the two winding devices, thereby supporting the roller blind 61. The sliding grooves on the two support rods 62 are arranged opposite to each other.

[0043] In an optional embodiment, such as Figure 5 As shown, Figure 5 for Figure 4 The enlarged structural diagram at point A shows a rubber component 63 on the side of the roller blind 61. A wire harness 50 is disposed within the rubber component 63 and is at least partially exposed therefrom. The second end of the wire harness 50 is connected to the end of the roller blind 61. The rubber component 63 on the side of the roller blind 61 allows it to be secured within the roller blind 63, and the wire harness 50 is at least partially exposed therefrom, thus serving a decorative purpose when the wire harness 50 extends from the roller blind 61. Furthermore, the wire harness 50 is at least partially exposed on the support rod 62, further enhancing its decorative function.

[0044] In an optional embodiment, such as Figure 7As shown, the rear curtain device also includes a drive assembly 70, which is mounted on the support portion 10. The drive assembly 70 includes a drive portion 71 and a transmission portion 72 connected to the drive portion 71. The transmission portion 72 is connected to the roller blind portion 61 to drive the roller blind portion 61 to extend and retract. A drive member is provided on the side wall of the support portion 10, near the support rod 62. Specifically, the transmission portion 72 is located on the inner side wall of the support portion 10, and the drive portion 71 is located on the outer side wall of the support portion 10, near the support rod 62, and near the end of the annular cavity 13 near the support rod 62. When the roller blind portion 61 needs to extend, the drive portion 71 can be activated to control the transmission portion 72, thereby causing the roller blind portion 61 to extend.

[0045] In one optional embodiment, the drive unit 71 may be a motor, the transmission unit 72 may be a gear, and the roller blind 61 may mesh with the gear, so that when it is necessary to control the extension and retraction of the roller blind 61, the movement of the roller blind 61 on the support rod 62 can be controlled by the gear. In other embodiments, the drive unit 71 and the transmission unit 72 may be other transmission mechanisms, which are not specifically limited herein.

[0046] In an optional embodiment, when the rear curtain of the vehicle needs to be decorated with the wiring harness 50, that is, when the roller blind 61 is extended, the drive unit 71 can drive the transmission unit 72 to rotate, thereby causing the roller blind 61 to slide out of the annular cavity 13 and slide in the groove of the support rod 62, so that the roller blind 61 extends. When the roller blind 61 extends, it can drive the wiring harness 50 to extend, thereby causing the storage member 40 and the housing 20 to rotate in the first direction, so as to store elastic potential energy for the elastic member 30. When the roller blind 61 is retracted, the drive unit 71 can drive the transmission unit 72 to rotate in the direction, thereby causing the roller blind 61 to slide into the annular cavity 13 through the groove of the support rod 62. When the roller blind 61 is retracted, the wiring harness 50 can drive the housing 20 and the storage member 40 to rotate under the elastic force of the elastic member 30, so that the wiring harness 50 is wound on the outer wall of the storage member 40.

[0047] In an optional embodiment, the wiring harness 50 may include a first decorative wire and a second decorative wire. The first decorative wire may be wound around the outer wall of the storage member 40, and the second decorative wire may be disposed on the outer wall of the rubber part 63 of the roller blind portion 61. This facilitates the installation of the wiring harness device with the rear curtain of the vehicle. When the wiring harness device is installed on the rear curtain of the vehicle, the first and second decorative wires can be snapped together. Specifically, a connector may be provided at one end where the first and second decorative wires are connected, thereby inserting the first and second decorative wires to connect them. When the first and second decorative wires are inserted, the first decorative wire can supply power to the second decorative wire, that is, an external power source supplies power to both the first and second decorative wires. One end of the second decorative wire is fixedly connected to one end of the roller blind portion 61.

[0048] This application also provides a vehicle including: a rear curtain device, wherein the rear curtain device is a rear curtain device of any of the above embodiments.

[0049] The above are merely embodiments of this application and do not limit the scope of this patent application. Any equivalent structural or procedural changes made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of this application.

Claims

1. A take-up device, characterized in that The take-up device includes: The bearing part has a rotating shaft provided on its inner sidewall; A housing, which is sleeved on the rotating shaft and movably connected to the rotating shaft, and an accommodating space is formed inside the housing; An elastic element is wound and disposed within the accommodating space. One end of the elastic element is connected to the rotating shaft, and the other end is connected to the inner wall of the housing. A storage component is disposed at the end of the housing away from the supporting portion; A wire harness, which is wound and connected to the outer wall of the storage component and extends or retracts through the storage component.

2. The take-up device according to claim 1, characterized in that The end of the housing away from the supporting part has an opening communicating with the accommodating space, and at least one slot is provided at the edge of the opening. The storage component has at least one protrusion at one end near the housing, and the protrusion is connected to the slot.

3. The take-up device according to claim 2, characterized in that The storage component includes a first limiting plate, a second limiting plate, and a connecting part. The two ends of the connecting part are respectively connected to the first limiting plate and the second limiting plate, and the wire harness is disposed on the outer side wall of the connecting part. The first limiting plate is disposed at one end of the connecting portion near the housing, and the protrusion is disposed at the edge of the first limiting plate.

4. The take-up device of claim 1, wherein A groove is provided on the outer wall of the rotating shaft; One end of the elastic element is provided with a bending portion, which is engaged in the groove, and the other end of the elastic element is connected to the inner wall of the housing.

5. The take-up device according to claim 3, characterized in that The connecting part is provided with a first through hole, which is arranged along the axial direction of the connecting part. The side wall of the connecting part is provided with a second through hole that communicates with the first through hole. The first end of the wire harness is connected to an external component through the first through hole and the second through hole, and the second end is wound around the outer side wall of the connecting part.

6. A tailgate curtain device characterized by, The rear curtain device of the carriage includes a take-up device and a roller blind assembly as described in any one of claims 1-5.

7. The vehicle compartment tail drape apparatus of claim 6, wherein, The roller blind assembly includes: The roller blind section has an annular cavity on the inner wall of the supporting section, through which the roller blind section extends and retracts, and the wire harness is at least partially disposed on the side of the roller blind section; A support rod is provided on the bearing part in a direction perpendicular to the axis of rotation. The support rod is provided with a sliding groove that communicates with the annular cavity. The roller blind part is movably connected to the sliding groove.

8. The vehicle compartment tail drape apparatus of claim 7, wherein, A rubber component is provided on the side of the roller blind section, and a wire harness is disposed inside the rubber component and at least partially exposed on the rubber component. The second end of the wire harness is connected to the end of the roller blind section.

9. The vehicle compartment tail drape apparatus of claim 7, wherein, The rear curtain device of the carriage also includes a drive assembly, which is disposed on the support part; The drive assembly includes a drive unit and a transmission unit connected to the drive unit. The transmission unit is connected to the roller blind unit to drive the roller blind unit to extend and retract.

10. A vehicle characterized by comprising: The vehicle includes a rear curtain device as described in any one of claims 6-9.

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