A cord winder for preventing abrasion of a cord

Abstract

This application relates to the field of cable reel technology, and in particular to a cable reel for preventing cable harness wear. It includes an upper shell, a bottom shell, a reel, and a cable spool. The upper shell and bottom shell have cable outlets on opposite sides, symmetrically arranged. One end of the cable spool is located between and connected to the two cable outlets. A fixing post is fixedly connected to the inner side of the bottom shell. A fixing hole is provided on one side of the upper shell, into which the fixing post is inserted. The reel is rotatably connected to the fixing post. The upper shell is mounted on the fixing post. The reel is located between the upper shell and the bottom shell. A connecting component is provided on the side of the reel near the bottom shell, and the cable spool is rotatably connected to the connecting component. A limiting mechanism is provided between the bottom shell and the cable spool to prevent wear during cable spool rotation. The limiting mechanism includes a limiting plate and a locking component. The limiting plate is located between the bottom shell and the cable spool. The fixing post passes through the limiting plate, and the cable spool is attached to one side of the limiting plate. The locking component is located on the limiting plate, thus improving the service life of the cable harness.

Description

Technical Field

[0001] This application relates to the field of cable reel technology, and in particular to a cable reel that prevents cable harness wear. Background Technology

[0002] A cable reel, also known as a wire winder, cable reel, or cable spool, is a device used to store, organize, and manage flexible materials such as cables, ropes, and hoses. It neatly winds linear objects onto a spool by winding them, making them easy to store, carry, and use, while preventing tangling or damage.

[0003] In existing cable reels, the cable reel rotates inside the reel while it is in direct contact with the inner surface of the reel's bottom shell. However, the reel's outer shell remains stationary while the cable reel rotates inside, causing it to contact the bottom shell and wear down. Over time, this can render the cable reel unusable. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this application is to provide a cable reel that prevents wire harness wear, thus solving the problem that when the wire reel rotates, it comes into contact with the bottom shell of the reel, causing wear and potentially rendering the wire reel unusable over time.

[0005] The above-mentioned objective of this application is achieved through the following technical solution: a wire reel for preventing wire harness wear, comprising an upper shell, a bottom shell, a reel, and a wire spool. The upper shell and the bottom shell have wire outlets on opposite sides, which are symmetrical to each other. One end of the wire spool is located between the two wire outlets and is connected to them. A fixing post is fixedly connected to the inner side of the bottom shell. A fixing hole is opened on one side of the upper shell, and the fixing post is inserted into the fixing hole. The reel is rotatably connected to the fixing post. The upper shell is disposed on the fixing post. The reel is located between the upper shell and the bottom shell. A connecting component is disposed on the side of the reel near the bottom shell. The wire spool is rotatably connected to the connecting component. A limiting mechanism is disposed between the bottom shell and the wire spool to prevent wear caused by the rotation of the wire spool.

[0006] Furthermore, the limiting mechanism includes a limiting plate and a locking component. The limiting plate is located between the bottom shell and the wire coil, the fixing post passes through the limiting plate, the wire coil is attached to one side of the limiting plate, and the locking component is disposed on the limiting plate.

[0007] Furthermore, the connecting assembly includes two annular pieces, which are fixedly installed on the side of the winding reel near the bottom shell and arranged in a circumferential array on one side of the winding reel. The winding reel is sleeved on the two annular pieces. The locking assembly includes two buckles. Two slots are opened on the side of the winding reel near the limiting plate. The two buckles are respectively engaged in the two slots and are located between the two annular pieces.

[0008] Furthermore, the inner sides of the two annular pieces are respectively provided with sliding grooves, which are connected to the two slots and slidably connected to the two buckles.

[0009] Furthermore, two annular plates are fixedly connected to limit posts on the side near the limiting plate, and the limiting plate has two through holes on the side near the annular plates, with the two limit posts connected to the two through holes respectively.

[0010] Furthermore, a flat return spring is provided on the side of the winding reel near the limiting plate, and is located between the two annular plates. One end of the flat return spring is fixedly connected to one end of the winding reel, and the other end of the flat return spring is fixedly connected to one side of the winding reel.

[0011] Furthermore, a first PCB board is fixedly connected to the side of the reel away from the flat return spring, and a second PCB board is provided on the side of the first PCB board away from the reel. Several bent spring pin connectors are fixedly connected to the second PCB board in a circumferential array. The bent spring pin connectors abut against the first PCB board. Connection ports are respectively opened on the opposite sides of the upper shell and the bottom shell, and they are symmetrical to each other. One end of the second PCB board is located between two connection ports.

[0012] Furthermore, an annular outer guide rail and an annular inner guide rail are fixedly installed on the side of the reel away from the limiting plate, respectively. The annular inner guide rail is located inside the annular outer guide rail. The annular outer guide rail has a notch. An arc-shaped block is fixedly installed on one side of the reel. The arc-shaped block is located at the notch of the annular outer guide rail and between the annular outer guide rail and the annular inner guide rail. An arc-shaped groove is provided on one side of the arc-shaped block. A sliding column is fixedly installed on the inner side of the upper shell. A slider is rotatably connected to the sliding column. A sliding column is fixedly connected on the side of the slider away from the upper shell. One end of the sliding column abuts against one side of the reel and is located between the annular outer guide rail and the annular inner guide rail. The first PCB board is located inside the annular inner guide rail.

[0013] Furthermore, a threaded hole is provided at one end of the fixing post near the upper shell, and a screw is screwed into the threaded hole.

[0014] In summary, this application includes at least one of the following beneficial technical effects:

[0015] 1. When using this device, simply pull out the free end of the wire coil. The coil will then rotate smoothly on the reel via the connecting assembly, and simultaneously extend steadily from the symmetrical outlets on the upper and lower shells. At this time, the limiting disc is synchronously fixed to the reel via the locking assembly, ensuring that the wire coil is always confined between the limiting disc and the reel. When the wire coil is pulled, the coil, limiting disc, and reel as a whole rotate synchronously around the fixed post, preventing direct friction between the wire coil and the bottom shell. The limiting disc, acting as a dynamic isolation layer, reduces rotational resistance and effectively prevents surface wear caused by long-term friction, significantly extending the service life of the wire harness.

[0016] 2. When assembling the limiting disc and the winding reel, the limiting disc precisely engages with the slots on both sides of the winding reel via latches, achieving quick locking and ensuring synchronous rotation. Two annular plates are symmetrically distributed circumferentially, forming a stable annular support structure that maintains even force on the winding reel during unwinding and winding, reducing the risk of uneven wear. The modular design of the latches and slots not only simplifies the assembly process but also facilitates disassembly and assembly for later maintenance, improving the practicality and maintainability of the overall device. This structure ensures reliable connection while making the winding reel rotate more smoothly, effectively avoiding the jamming problem common in traditional winding reels.

[0017] 3. The limiting plate precisely engages with the limiting post on the annular plate through the through hole, forming a double positioning structure based on the snap-lock mechanism. When the snap-lock slides into the slot along the slide groove, the limiting post simultaneously inserts into the through hole, ensuring complete alignment between the limiting plate and the winding reel. Attached Figure Description

[0018] Figure 1 This is an exploded view of the overall structure in the embodiment;

[0019] Figure 2 This is an exploded view of the overall structure in the embodiment from another perspective;

[0020] Figure 3 This is a schematic diagram of the overall structure of the upper shell in the embodiment;

[0021] Figure 4 This is a schematic diagram of the structure of the winding reel and the sliding column in the embodiment;

[0022] Figure 5 This is an exploded view of the cooperation between the limiting mechanism, the wire coil, and the winding reel in the embodiment;

[0023] Figure 6 This is an exploded view of the limiting mechanism and the winding reel in the embodiment.

[0024] Reference numerals: 1. Upper shell; 11. Slider; 12. Sliding column; 13. Fixing hole; 2. Bottom shell; 21. Fixing column; 211. Threaded hole; 212. Screw; 3. Winding reel; 31. Slot; 32. Flat return spring; 33. First PCB board; 34. Second PCB board; 35. Bending spring pin connector; 36. Annular outer guide rail; 37. Annular inner guide rail; 38. Arc block; 4. Wire coil; 5. Connecting assembly; 51. Annular piece; 511. Slide groove; 52. Limiting column; 6. Limiting mechanism; 61. Limiting plate; 611. Through hole; 62. Locking assembly; 621. Buckle. Detailed Implementation

[0025] The present application will be further described in detail below with reference to the accompanying drawings.

[0026] Example, refer to Figures 1-6 A wire harness winding device includes an upper shell 1, a bottom shell 2, a winding reel 3, and a wire spool 4. The upper shell 1 and the bottom shell 2 have wire outlets on opposite sides, which are symmetrical to each other. One end of the wire spool 4 is located between the two wire outlets and is connected to them. A fixing post 21 is fixedly connected to the inner side of the bottom shell 2. A fixing hole 13 is opened on one side of the upper shell 1, and the fixing post 21 is inserted into the fixing hole 13. The winding reel 3 is rotatably connected to the fixing post 21. The upper shell 1 is set on the fixing post 21. The winding reel 3 is located between the upper shell 1 and the bottom shell 2. A connecting component 5 is provided on the side of the winding reel 3 near the bottom shell 2. The wire spool 4 is rotatably connected to the connecting component 5. A limiting mechanism 6 is provided between the bottom shell 2 and the wire spool 4 to prevent wear caused by the rotation of the wire spool 4. The limiting mechanism 6 includes a limiting disc 61 and a locking component 62. The limiting disc 61 is located between the bottom shell 2 and the wire coil 4. The fixing post 21 passes through the limiting disc 61, and the wire coil 4 is attached to one side of the limiting disc 61. The locking component 62 is disposed on the limiting disc 61. When using the device, simply pull out the free end of the wire coil 4, and the wire coil 4 will rotate smoothly on the winding reel 3 through the connecting component 5, while extending smoothly from the symmetrical wire outlets of the upper and lower shells. At this time, the limiting disc 61 is synchronously fixed to the winding reel 3 through the locking component 62, so that the wire coil 4 is always restricted between the limiting disc 61 and the winding reel 3. When the wire coil 4 is pulled, the wire coil 4, the limiting disc 61, and the winding reel 3 rotate synchronously around the fixing post 21, avoiding direct friction between the wire coil 4 and the bottom shell 2. The limiting disc 61, as a dynamic isolation layer, reduces rotational resistance and effectively prevents surface wear of the wire coil 4 caused by long-term friction, significantly extending the service life of the wire harness.

[0027] The connecting component 5 includes two annular pieces 51, which are fixedly installed on the side of the reel 3 near the bottom shell 2 and arranged in a circular array on one side of the reel 3. The coil 4 is fitted onto the two annular pieces 51. The locking component 62 includes two latches 621. The reel 3 has two slots 31 on the side near the limiting plate 61, and the two latches 621 are respectively engaged with the two slots 31. The two latches 621 are located between the two annular pieces 51. When assembling the limiting plate 61 and the reel 3, the limiting plate 61 is precisely engaged with the slots 31 of the reel 3 by the latches 621 on both sides, achieving quick locking and ensuring that the two rotate synchronously. The two annular pieces 51 are symmetrically distributed in a circular pattern, forming a stable annular support structure, so that the coil 4 is evenly stressed during winding and unwinding, reducing the risk of uneven wear. The modular design of the latches 621 and slots 31 not only simplifies the assembly process but also facilitates disassembly and assembly operations during later maintenance, improving the practicality and maintainability of the overall device. This structure ensures reliable connection while making the rotation of the wire reel 4 smoother, effectively avoiding the jamming problem common in traditional wire reels.

[0028] The inner sides of the two annular pieces 51 are respectively provided with sliding grooves 511, which are connected to two locking slots 31 and slidably connected with two buckles 621. When assembling the winding reel 3 and the limiting plate 61, the limiting plate 61 is precisely guided along the sliding grooves 511 by the buckles 621 to avoid deviation, and can smoothly slide into the locking slots 31 of the winding reel 3 to complete the locking and ensure a stable connection between the two.

[0029] Two annular plates 51 are fixedly connected to limiting posts 52 on the side near the limiting plate 61. The limiting plate 61 has two through holes 611 on the side near the annular plates 51, and the two limiting posts 52 are connected to the two through holes 611 respectively. The limiting plate 61 precisely engages with the limiting posts 52 on the annular plates 51 through the through holes 611, forming a double positioning structure based on the locking mechanism 621. When the locking mechanism 621 slides into the slot 31 along the slide groove 511, the limiting posts 52 simultaneously insert into the through holes 611, ensuring complete alignment between the limiting plate 61 and the winding reel 3.

[0030] A flat return spring 32 is located on the side of the reel 3 near the limiting disc 61, between two annular plates 51. One end of the flat return spring 32 is fixedly connected to one end of the coil 4, and the other end is fixedly connected to one side of the reel 3. When the coil 4 is pulled outward, the flat return spring 32 gradually stores energy and compresses as the coil 4 rotates. After the coil 4 is released, the spring's restoring force drives the reel 3 to automatically rotate, achieving rapid winding of the wire bundle. The special structural design of this flat spring provides uniform torsional torque within a limited space, ensuring the smoothness of the winding action and avoiding the tangling problem that easily occurs with traditional helical springs. At the same time, the connection method of fixing both ends of the spring to the coil 4 and the reel 3 respectively effectively transmits torque while reducing relative wear between components, significantly improving the reliability and service life of automatic winding.

[0031] A first PCB board 33 is fixedly connected to the side of the reel 3 away from the flat return spring 32. A second PCB board 34 is disposed on the side of the first PCB board 33 away from the reel 3. Several bent spring pin connectors 35 are fixedly connected to the second PCB board 34 in a circumferential array. The bent spring pin connectors 35 abut against the first PCB board 33. Connection ports are respectively opened on the opposite sides of the upper shell 1 and the bottom shell 2, and they are symmetrical to each other. One end of the second PCB board 34 is located between two connection ports. When using the device, the first PCB board 33 is fixed to the reel 3 and rotates synchronously with the reel 3. The second PCB board 34 maintains dynamic contact with the first PCB board 33 through the circumferential array of bent spring pin connectors 35. External circuits can be connected through the connection ports of the second PCB board 34, and it is electrically connected to the reel 4 through the first PCB board 33. The dual PCB board structure achieves a stable electrical connection and improves the working efficiency of the device.

[0032] On the side of the reel 3 away from the limiting plate 61, an annular outer guide rail 36 and an annular inner guide rail 37 are fixedly installed respectively. The annular inner guide rail 37 is located inside the annular outer guide rail 36. The annular outer guide rail 36 has a notch. An arc-shaped block 38 is fixedly installed on one side of the reel 3. The arc-shaped block 38 is located at the notch of the annular outer guide rail 36 and between the annular outer guide rail 36 and the annular inner guide rail 37. An arc-shaped slot 31 is provided on one side of the arc-shaped block 38. A sliding column 12 is fixedly installed on the inner side of the upper shell 1. A slider 11 is rotatably connected to the sliding column 12. The sliding column 12 is fixedly connected on the side of the slider 11 away from the upper shell 1. One end of the sliding column 12 abuts against one side of the reel and is located between the annular outer guide rail 36 and the annular inner guide rail 37. The first PCB board 33 is located inside the annular inner guide rail 37. When the coil 4 needs to be pulled out, the extended end of the coil 4 is pulled outward. The coil 4 drives the winding reel 3 to rotate counterclockwise on the fixed post 21. At this time, the flat return spring 32 is compressed and stores energy. The sliding post 12 slides along the inner annular guide rail 37 with the rotation trajectory of the winding reel 3 and pushes the slider 11 to rotate. After stretching to the target length, the coil 4 is released. The flat return spring 32 releases its elastic energy and drives the winding reel 3 to rotate clockwise to rewind. During this process, when the sliding post 12 slides along the inner annular guide rail 37 to the arc-shaped slot 31 of the arc-shaped block 38, it is limited by the slot opening, causing the winding reel 3 to stop rotating, thereby achieving precise length locking of the coil 4. A brief pull on the coil 4 causes the sliding post 12 to be locked by the arc-shaped slot. The inclined surface of groove 31 guides the wire coil 3 into the notch of the annular outer guide rail 36. After release, the wire coil 3 continues to rotate clockwise under the action of the flat return spring 32. The sliding column 12 slides cyclically along the annular outer guide rail 36 until the wire coil 4 is fully retracted. If it needs to be stretched again, gently pull the wire coil 4 to reset the sliding column 12 from the left end of the notch to the annular inner guide rail 37. The fixed-length stretching operation can be repeated. The sliding column 12 switches between the annular inner guide rail 37 and the annular outer guide rail 36 according to the different rotation directions of the wire coil 3. By recording the number of times the sliding column 12 engages with the arc-shaped slot 31, corresponding to the number of rotations of the wire coil 3, the stretching amount of the wire coil 4 can be intuitively calculated, which improves the convenience of the device.

[0033] The fixing post 21 has a threaded hole 211 at one end near the upper shell 1, and a screw 212 is screwed into the threaded hole 211. When installing the device, the fixing post 21 of the bottom shell 2 is connected to the fixing hole 13 of the upper shell 1, and the threaded hole 211 is screwed into the screw 212 to complete the fixed installation of the bottom shell 2 and the upper shell 1, which improves the convenience of the device.

[0034] Working principle:

[0035] When using this device, simply pull out the free end of the wire coil 4. The wire coil 4 compresses the flat return spring 32, causing the wire coil 4, the limiting disc 61, and the winding reel 3 to rotate synchronously around the fixed post 21. At the same time, the wire coil 4 smoothly extends from the symmetrical outlets of the upper and lower shells. The limiting disc 61 and the winding reel 3 remain synchronously fixed, ensuring that the wire coil 4 is always confined between the limiting disc 61 and the winding reel 3. As the wire coil 4 is pulled, the wire coil 4, the limiting disc 61, and the winding reel 3 rotate synchronously around the fixed post 21, preventing direct friction between the wire coil 4 and the bottom shell 2. The limiting disc 61, as a dynamic isolation layer, reduces rotational resistance and effectively prevents surface wear of the wire coil 4 caused by long-term friction, significantly extending the service life of the wire harness.

[0036] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A wire reel for preventing wire harness wear, comprising an upper housing (1), a bottom housing (2), a wire reel (3), and a wire spool (4), characterized in that: The upper shell (1) and the bottom shell (2) have wire outlets on opposite sides, which are symmetrical to each other. One end of the wire coil (4) is located between the two wire outlets and is connected. A fixing post (21) is fixedly connected to the inner side of the bottom shell (2). A fixing hole (13) is opened on one side of the upper shell (1). The fixing post (21) is inserted into the fixing hole (13). The wire coil (3) is rotatably connected to the fixing post (21). The upper shell (1) is set on the fixing post (21). The wire coil (3) is located between the upper shell (1) and the bottom shell (2). A connecting component (5) is provided on the side of the wire coil (3) close to the bottom shell (2). The wire coil (4) is rotatably connected to the connecting component (5). A limiting mechanism (6) is provided between the bottom shell (2) and the wire coil (4) to prevent wear when the wire coil (4) rotates.

2. A wire reel for preventing wire harness wear according to claim 1, characterized in that: The limiting mechanism (6) includes a limiting plate (61) and a locking component (62). The limiting plate (61) is located between the bottom shell (2) and the wire coil (4). The fixing post (21) passes through the limiting plate (61). The wire coil (4) is attached to one side of the limiting plate (61). The locking component (62) is disposed on the limiting plate (61).

3. A wire reel for preventing wire harness wear according to claim 2, characterized in that: The connecting component (5) includes two annular pieces (51), which are fixedly installed on the side of the winding reel (3) near the bottom shell (2) and arranged in a circular array on one side of the winding reel (3). The coil (4) is sleeved on the two annular pieces (51). The locking component (62) includes two buckles (621). The winding reel (3) near the limiting plate (61) has two slots (31), which are respectively engaged with the two slots (31). The two buckles (621) are located between the two annular pieces (51).

4. A wire reel for preventing wire harness wear according to claim 3, characterized in that: The inner sides of the two annular pieces (51) are respectively provided with sliding grooves (511), the two sliding grooves (511) are respectively connected to the two slots (31) and are slidably connected to the two buckles (621).

5. A wire reel for preventing wire harness wear according to claim 3, characterized in that: The two annular pieces (51) are fixedly connected to the side of the limiting plate (61) with limiting posts (52). The side of the limiting plate (61) with the annular pieces (51) has two through holes (611) and the two limiting posts (52) are respectively connected to the two through holes (611).

6. A wire reel for preventing wire harness wear according to claim 3, characterized in that: A flat return spring (32) is provided on the side of the winding reel (3) near the limiting plate (61) and is located between the two annular plates (51). One end of the flat return spring (32) is fixedly connected to one end of the winding reel (4), and the other end of the flat return spring (32) is fixedly connected to one side of the winding reel (3).

7. A wire reel for preventing wire harness wear according to claim 6, characterized in that: The winding reel (3) is fixedly connected to a first PCB board (33) on the side away from the flat return spring (32). The first PCB board (33) is provided with a second PCB board (34) on the side away from the winding reel (3). A plurality of bent spring pin connectors (35) are fixedly connected on the second PCB board (34) in a circular array. The bent spring pin connectors (35) abut against the first PCB board (33). The upper shell (1) and the bottom shell (2) are respectively provided with connection ports on opposite sides and are symmetrical to each other. One end of the second PCB board (34) is located between the two connection ports.

8. A wire reel for preventing wire harness wear according to claim 7, characterized in that: On the side of the reel (3) away from the limiting disc (61), an annular outer guide rail (36) and an annular inner guide rail (37) are fixedly installed respectively. The annular inner guide rail (37) is located inside the annular outer guide rail (36). The annular outer guide rail (36) has a notch. An arc-shaped block (38) is fixedly installed on one side of the reel (3). The arc-shaped block (38) is located at the notch of the annular outer guide rail (36) and between the annular outer guide rail (36) and the annular inner guide rail (37). (38) has an arc-shaped slot (31) on one side. A sliding column (12) is fixedly installed on the inner side of the upper shell (1). A slider (11) is rotatably connected to the sliding column (12). The sliding column (12) is fixedly connected to the side of the slider (11) away from the upper shell (1). One end of the sliding column (12) abuts against one side of the winding reel (3) and is located between the outer annular guide rail (36) and the inner annular guide rail (37). The first PCB board (33) is located inside the inner annular guide rail (37).

9. A wire reel for preventing wire harness wear according to claim 1, characterized in that: The fixed post (21) has a threaded hole (211) at one end near the upper shell (1), and a screw (212) is screwed into the threaded hole (211).

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