A reel and retractable cord module

Abstract

The utility model relates to a kind of wire reel and telescopic wire module in wire material winding technical field, the wire reel includes first bearing and second bearing, the positioning cavity is provided with coil spring, the bottom of the positioning cavity is provided with several notches, the adjacent two notches are spaced apart to form the reinforcing rib structure.The utility model sets up several notches in the bottom of positioning cavity, effectively solve the problem that lubricating grease is easily diffused in the prior art, cavity bottom surface is easily worn out.The reinforcing rib structure formed by several notches not only enhances the structural strength of the bottom of positioning cavity, reduces the scratch wear phenomenon caused by coil spring repeated friction, also limits the flow range of lubricating grease by notch design, so that it can be long-term stable and remain in the range of notch, to ensure the persistent lubrication effect of the contact part of coil spring and cavity bottom, while effectively reduce the probability of abnormal sound generation, significantly improve the stability of telescopic wire module use.

Description

Technical Field

[0001] This utility model relates to the field of wire winding technology, specifically to a winding reel and a telescopic wire module. Background Technology

[0002] Charging devices (such as power banks or chargers) have cables for connecting to electronic devices to charge them. These devices may include a retractable cable module for winding the cable. When charging is needed, the cable can be pulled out from the retractable module to adjust its length, making it suitable for various applications. When charging is not needed, the retractable module can retract the cable, storing it for easy portability.

[0003] like Figure 1 As shown, the existing telescopic cable module mainly consists of a housing 3', a winding reel 1', and a coil spring 9'. The cable is usually wound on the winding reel 1', and the two ends of the coil spring 9' are connected to the winding reel 1' and the main shaft set on the housing 3', respectively. This ensures that after the cable is pulled out, the elastic force of the coil spring 9' can drive the winding reel 1' to rotate, thereby automatically winding the cable back into the housing 3'.

[0004] However, the existing positioning cavity 101' within the winding reel 1' used to accommodate the coil spring 9' has some shortcomings in actual use. First, the existing positioning cavity 101' usually contains a certain amount of lubricating grease to reduce the friction during the stretching and deformation of the coil spring 9', thereby reducing the resistance to pulling the wire. However, the bottom of the existing positioning cavity 101' is usually composed of a smooth and flat surface, making it difficult for the lubricating grease to remain stably in a specific area at the bottom of the cavity for a long time. During the repeated rotation of the winding reel 1', the lubricating grease is easily carried by the coil spring 9' to spread to the surrounding area, causing the lubrication effect of the contact area between the coil spring 9' and the bottom of the cavity to gradually deteriorate, which in turn increases the resistance when pulling the wire and affects the user experience.

[0005] Secondly, the smooth bottom surface of the positioning cavity 101' is prone to scratches and wear after prolonged use. Because the coil spring 9' continuously rubs against the bottom of the cavity during extension and retraction, the smooth, unreinforced bottom surface gradually loses its flatness under long-term stress, resulting in fine scratches and unevenness. This not only further affects the retention of lubricating grease but also increases the coefficient of friction between the coil spring 9' and the bottom of the cavity, requiring greater force to pull the cable, reducing the product's durability and user comfort, and also easily causing abnormal noise. Therefore, to solve the above problems, this utility model provides a winding reel and telescopic cable module. Summary of the Invention

[0006] This utility model provides a winding reel and a telescopic cable module to solve the problems mentioned in the background art.

[0007] The objective of this utility model is achieved through the following means: A winding reel includes a first support member and a second support member arranged in opposite combinations. The first support member is provided with an upwardly opening positioning cavity. A coil spring is provided inside the positioning cavity. The bottom of the positioning cavity is provided with a plurality of slots, and two adjacent slots are spaced apart to form a reinforcing rib structure.

[0008] Furthermore, the reinforcing rib structure is connected to the inner wall of the positioning cavity.

[0009] Furthermore, several of the slots are distributed sequentially along the center of the positioning cavity.

[0010] Furthermore, a bone-supporting position is provided on one side of the positioning cavity, and one end of the coil spring is connected to the bone-supporting position.

[0011] Furthermore, a receiving space for accommodating wires is provided between the first carrier and the second carrier.

[0012] Furthermore, a fixed bone position is provided on one side of the positioning cavity, and a limiting cavity for cooperating with the wire is provided between the positioning cavity and the fixed bone position.

[0013] Furthermore, in the direction perpendicular to the first support member, the height of the fixed bone position is less than or equal to the height of the positioning cavity, and the positioning cavity and the fixed bone position are respectively provided with a connecting part for fitting and cooperating with the second support member at the ends away from the first support member.

[0014] The telescopic cable module includes a housing, a cable, and a winding reel for winding the cable.

[0015] Furthermore, the first or second support member is provided with arc-shaped grooves distributed sequentially along the center of the positioning cavity, and a retractable positioning member is installed inside the outer shell by a spring, the positioning member being provided with a positioning protrusion for engaging with the arc-shaped groove.

[0016] Furthermore, a locking rail is provided on the side of the first support member away from the second support member, and a rocker arm for cooperating with the locking rail is rotatably provided inside the housing.

[0017] Furthermore, one end of the outer casing is provided with a corner, the included angle between two adjacent sides of the corner is 70-110 degrees, and one side of the corner is provided with an outlet through which the wire can pass.

[0018] This invention effectively solves the problems of easy diffusion of lubricating grease and easy wear on the bottom surface of the cavity in the prior art by setting several slots at the bottom of the positioning cavity. The reinforcing rib structure formed by several slots not only enhances the structural strength of the bottom of the positioning cavity and reduces scratches and wear caused by repeated friction of the coil spring, but also limits the flow range of the lubricating grease through the slot design, allowing it to remain stably within the slot range for a long time. This ensures a lasting lubrication effect at the contact point between the coil spring and the bottom of the cavity, while effectively reducing the probability of abnormal noise and significantly improving the stability of the telescopic cable module. Attached Figure Description

[0019] Figure 1 This is an exploded view of a winding spool in the prior art; Figure 2 This is a schematic diagram of the structure of the first load-bearing component in this utility model; Figure 3 This is an exploded view of the winding reel in this utility model; Figure 4 This is a schematic diagram of the winding reel in this utility model; Figure 5 This is a schematic diagram showing the cooperation between the positioning component and the first bearing component in this utility model; Figure 6 This is a schematic diagram showing the cooperation between the rocker arm and the first bearing member in this utility model; Figure 7 This is a schematic diagram of the telescopic line module of this utility model; Figure 8 This is an exploded view of the telescopic wire module of this utility model; The reference numerals in the figure are as follows: 1-first support member, 101-positioning cavity, 102-slot, 103-reinforcing rib structure, 104-receiving bone position, 105-fixed bone position, 106-central shaft, 107-arc groove, 108-locking track, 109-connecting part, 2-second support member, 3-outer shell, 301-corner, 302-outlet, 4-wire, 5-positioning member, 501-positioning protrusion, 6-circular conductive track, 7-conductive terminal, 8-swing rod, 9-coil spring, 10-winding reel, 11-accommodating space. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] In this embodiment, refer to Figure 1 - Figure 6The specific implementation of the winding reel 10 includes a first support member 1 and a second support member 2 arranged in opposite combinations. The first support member 1 is provided with an upwardly opening positioning cavity 101. A coil spring 9 is provided inside the positioning cavity 101. The bottom of the positioning cavity 101 is provided with a plurality of slots 102. Two adjacent slots 102 are spaced apart to form a reinforcing rib structure 103.

[0022] The reinforcing rib structure 103 is connected to the inner wall of the positioning cavity 101, which enhances the strength of the positioning cavity 101 and enables the positioning cavity 101 to maintain structural stability and integrity when subjected to various stresses during the operation of the winding disc 10.

[0023] like Figure 2 As shown, in this embodiment, several slots 102 are sequentially distributed along the center of the positioning cavity 101 to ensure that the reinforcing rib structure 103 can evenly distribute the stress on the positioning cavity 101. This design not only improves the overall strength of the winding reel 10 but also extends its service life. In this embodiment, the slots 102 are designed to radiate from the center of the positioning cavity 101 towards the inner wall of the positioning cavity 101. When the winding reel 10 is working, the coil spring 9 can freely extend and retract within the positioning cavity 101, while the reinforcing rib structure 103 effectively prevents deformation or damage to the positioning cavity 101 caused by stress concentration.

[0024] Furthermore, the slots 102 can also be configured as rectangular shapes of equal size, thereby forming a grid-like reinforcing rib structure 103. This grid-like reinforcing rib structure 103 can more evenly distribute the stress from all directions on the positioning cavity 101, further enhancing the structural strength of the positioning cavity 101. At the same time, the design of the rectangular slots 102 of equal size simplifies the processing technology, which is conducive to improving production efficiency and reducing manufacturing costs. In the actual use of the winding reel 10, this grid-like reinforcing rib structure 103 can better adapt to stress changes under different working conditions, ensuring that the winding reel 10 always maintains stable performance. Moreover, the grid-like design can also reduce the overall weight of the winding reel 10 to a certain extent, reducing material waste.

[0025] One side of the positioning cavity 101 forms a receiving rib 104 through two spaced openings. One end of the coil spring 9 is connected to the receiving rib 104, and the other end is connected to the main shaft mounted on the outer casing 3. When the winding reel 10 performs winding or unwinding operations, the coil spring 9, through the cooperation of the receiving rib 104 and the main shaft, achieves smooth extension and retraction, providing a continuous and stable rebound force for the winding reel 10. This connection method not only ensures the reliability of the coil spring 9's operation but also makes the entire winding reel 10 structure more compact and reasonable. Simultaneously, the reinforcing rib structure 103 extends to connect with the receiving rib 104, thereby ensuring the local strength of the receiving rib 104 and improving the overall performance of the winding reel 10. The receiving rib 104 and the positioning cavity 101 are concentrically positioned, thus preventing the coil spring 9 from shifting.

[0026] A receiving space 11 for accommodating the cable 4 is provided between the first carrier 1 and the second carrier 2, which effectively avoids direct contact and friction between the cable 4 and the outer shell 3, thereby reducing the resistance to pulling the cable 4 and improving the user experience. At the same time, this structure also reduces the risk of wear on the outer sheath of the cable 4 and damage to the internal circuitry, extending the service life of the cable 4 and ensuring charging performance.

[0027] A fixing rib 105 is provided at intervals on one side of the positioning cavity 101. A limiting cavity for mating with the wire 4 is provided between the positioning cavity 101 and the fixing rib 105. During assembly, the limiting cavity formed between the fixing ribs 105 tightly clamps the end of the wire 4, ensuring a firm connection and preventing it from easily loosening. This effectively prevents the wire 4 from falling off or making poor contact due to frequent pulling. Furthermore, to further increase the stability of the wire 4 connection, adhesive tape or glue can be attached to the end of the wire 4 to enhance the bonding strength between the fixing rib 105 and the wire 4, thereby maintaining a reliable connection during long-term use.

[0028] In this embodiment, the width of the limiting cavity is the same as or slightly larger than the thickness of the wire 4. This precise dimensional design ensures that the wire 4 will not be too tight to pull out, nor too loose to cause shaking or displacement within the limiting cavity. During the repeated rotation of the winding reel 10 to wind and unwind the wire 4, the limiting cavity consistently provides a stable and reliable constraint on the wire 4, ensuring the smoothness and accuracy of its winding and unwinding. Furthermore, when the wire 4 is subjected to external forces in different directions, the limiting cavity can evenly distribute these forces, preventing the wire 4 from being damaged by excessive stress in certain areas, further improving the safety and stability of the wire 4 connection. In addition, this size-matching design also helps improve the overall aesthetics and neatness of the winding reel 10, making the wire 4 more orderly and organized when stored.

[0029] In this embodiment, a central shaft portion 106 extending to one side and connected to the second carrier 2 is provided in the middle of the first carrier 1, so that the first carrier 1 and the second carrier 2 are spaced apart to form the receiving space 11. One end of the wire 4 is connected to the central shaft portion 106. In actual use, the wire 4 is wound along the central shaft portion 106 in the receiving space 11. As the winding reel 10 rotates, the wire 4 is orderly wound into the receiving space 11, avoiding tangling and misalignment. The positioning cavity 101 is disposed in the central shaft portion 106.

[0030] In this embodiment, the positioning cavity 101 and the fixing rib 105 are at the same height in the direction perpendicular to the first support member 1. This equal-height design ensures that the winding reel 10 maintains axial balance during rotation, preventing eccentric wear or vibration caused by height differences, thereby improving winding stability and structural durability. Furthermore, both the positioning cavity 101 and the fixing rib 105 have corresponding connecting portions 109 at their ends away from the first support member 1 for engaging with the second support member 2. The second support member 2 has a connecting groove for interference fit with the connecting portion 109. This interference fit achieves a tight connection between the first support member 1 and the second support member 2, effectively preventing axial movement or loosening during rotation. In this embodiment, the cross-section of the connecting portion 109 can be of any shape, such as square, circular, or polygonal, to adapt to different assembly requirements and enhance connection stability.

[0031] Alternatively, in the direction perpendicular to the first support member 1, the height of the fixed bone position 105 is less than the height of the positioning cavity 101. Although it can still be connected to the second support member 2 through the connecting part 109, this height difference design may cause uneven axial force when the winding disc 10 rotates at high speed or is subjected to large external force, thus causing a slight eccentricity.

[0032] Reference Figure 7 - Figure 8 The telescopic cable module includes a housing 3, a conductive component, a cable 4, and a winding reel 10, which is used to wind the cable 4.

[0033] The first support member 1 or the second support member 2 is provided with arc-shaped grooves 107 distributed sequentially along the center of the positioning cavity 101. A retractable positioning member 5 is installed inside the outer shell 3 via a spring. The positioning member 5 is provided with positioning protrusions 501 for engaging with the arc-shaped grooves 107. When the wire 4 is pulled out, the winding reel 10 rotates along the main axis of the outer shell 3. During rotation, the positioning protrusions 501 sequentially engage with several arc-shaped grooves 107, producing a "click-click" sound and tactile feedback. This design not only provides clear operational feedback to the user and enhances the user experience, but also reduces the rotational speed of the winding reel 10 during the automatic retraction of the wire 4 by the coil spring 9, preventing the wire 4 from tangling or being damaged due to rapid retraction. Furthermore, the arc-shaped groove design makes the positioning protrusions 501 slide in and out more smoothly, reducing movement resistance and improving the durability of the structure.

[0034] A locking rail 108 is provided on the side of the first support member 1 away from the second support member 2. A rocker arm 8 is rotatably provided inside the outer shell 3 for cooperating with the locking rail 108. The locking rail 108 consists of an outer circulation channel and a stop bend. When the wire 4 is pulled, the rocker arm 8 slides along the outer circulation channel, so that the winding reel 10 is in a rotatable state, allowing the wire 4 to be pulled out freely. When the wire 4 is released, the coil spring 9 drives the winding reel 10 to rotate in the opposite direction, and the rocker arm 8 slides into the stop bend, locking the rotation of the winding reel 10, thereby achieving reliable positioning of the wire 4 at any length position.

[0035] In this embodiment, one end of the outer shell 3 is provided with a corner portion 301. The two adjacent sides of the corner portion 301 are arranged perpendicularly to each other. One side of the corner portion 301 is provided with an outlet 302 through which the wire 4 can pass. This right-angle portion 301 design can ensure that after the wire 4 is retracted, it is always perpendicularly aligned with the edge of the outer shell 3. The end of the wire 4 naturally fits the corner of the outer shell 3, avoiding tangling, misalignment or stacking and skew, thus improving the neatness of storage and the cleanliness of appearance.

[0036] Furthermore, the included angle between two adjacent sides of the corner 301 can also be set to a range of 70-110 degrees. The corner 301 in this angle range can also ensure that the wire 4 is retracted and remains perpendicularly aligned with the edge of the outer shell 3, avoiding tangling, misalignment, or stacking and tilting, thereby improving the neatness of storage and the cleanliness of appearance.

[0037] The conductive component includes a circular conductive track 6 and a conductive terminal 7. The circular conductive track 6 is disposed on the end face of the first support member 1 away from the second support member 2. The conductive terminal 7 is fixedly disposed on the inner side of the outer shell 3. After assembly, the conductive terminal 7 slides in contact with the circular conductive track 6 to achieve continuous conduction during rotation. One end of the wire 4 is connected to the circular conductive track 6 and the limiting cavity, while the other end extends to the outside of the outer shell 3 as an output end. When the winding reel 10 rotates to wind and unwind the wire 4, the conductive terminal 7 slides in contact along the circular conductive track 6 to ensure stable signal and power transmission.

[0038] This invention effectively solves the problems of easy diffusion of lubricating grease and easy wear on the bottom surface of the cavity in the prior art by setting a number of slots 102 at the bottom of the positioning cavity 101. The reinforcing rib structure 103 formed by the number of slots 102 not only enhances the structural strength of the bottom of the positioning cavity 101 and reduces the scratching and wear caused by repeated friction of the coil spring 9, but also limits the flow range of the lubricating grease through the design of the slots 102, so that it can remain stably within the range of the slots 102 for a long time. This ensures the long-lasting lubrication effect of the contact part between the coil spring 9 and the bottom of the cavity, while effectively reducing the probability of abnormal noise and significantly improving the stability of the telescopic cable module.

[0039] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present utility model without departing from the scope of the present utility model shall fall within the scope of the present utility model.

Claims

1. A winding reel, comprising a first support member (1) and a second support member (2) arranged opposite to each other, the first support member (1) being provided with an upwardly opening positioning cavity (101), wherein a coil spring (9) is provided within the positioning cavity (101), characterized in that, The bottom of the positioning cavity (101) is provided with a number of slots (102), and two adjacent slots (102) are spaced apart to form a reinforcing rib structure (103).

2. The winding reel according to claim 1, characterized in that: The reinforcing rib structure (103) is connected to the inner wall of the positioning cavity (101).

3. The winding reel according to claim 2, characterized in that, Several of the slots (102) are distributed sequentially along the center of the positioning cavity (101).

4. The winding reel according to claim 2, characterized in that: The positioning cavity (101) has a support bone position (104) on one side, and one end of the coil spring (9) is connected to the support bone position (104).

5. A winding reel according to any one of claims 1-4, characterized in that: A receiving space (11) for accommodating wire (4) is provided between the first carrier (1) and the second carrier (2).

6. A winding reel according to claim 5, characterized in that: A fixed bone position (105) is provided on one side of the positioning cavity (101), and a limiting cavity for cooperating with the wire (4) is provided between the positioning cavity (101) and the fixed bone position (105).

7. A winding reel according to claim 6, characterized in that, In the direction perpendicular to the first support member (1), the height of the fixed bone position (105) is less than or equal to the height of the positioning cavity (101). The positioning cavity (101) and the fixed bone position (105) are both provided with a connecting part (109) for fitting and cooperating with the second support member (2) at the ends away from the first support member (1).

8. A telescopic cable module, characterized in that, Includes a housing (3), wire (4), and a winding spool according to any one of claims 1-7, the winding spool (10) being used to wind up the wire (4).

9. The telescopic cable module according to claim 8, characterized in that: The first support member (1) or the second support member (2) is provided with arc-shaped grooves (107) distributed sequentially along the center of the positioning cavity (101). The outer shell (3) is equipped with a retractable positioning member (5) by means of a spring. The positioning member (5) is provided with a positioning protrusion (501) for cooperating with the arc-shaped groove (107).

10. The telescopic line module according to claim 8, characterized in that: A locking rail (108) is provided on the side of the first support member (1) away from the second support member (2), and a rocker arm (8) for cooperating with the locking rail (108) is rotatably provided inside the outer shell (3).

11. The telescopic line module according to claim 8, characterized in that: One end of the outer shell (3) is provided with a corner (301), the included angle between two adjacent sides of the corner (301) is 70-110 degrees, and one side of the corner (301) is provided with an outlet (302) through which the wire (4) can pass.

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