A retractable cord device

Abstract

The utility model discloses a telescopic wire device, include: casing, the casing surrounds and is formed with the installation cavity, still be provided with the through -hole of the communication of installation cavity on the casing, rotatablely be established in the installation cavity in the rotating seat, data line, data line one end is connected with the rotating seat, and the other end of data line passes through the through -hole and extends out casing outside, and data line includes winding state and unfolding state, when data line is winding state, data line is located in the installation cavity, and winds on the rotating seat, when data line is unfolding state, data line is located in the installation cavity outside, damping part, be located in the installation cavity and with casing fixed connection, and the limiting piece is located with data line in the same horizontal position, when data line is winding state, damping part and data line abut. Through setting damping part, make the contact force between it and data line can produce effective friction, thereby slow down the speed of data line in the process of retraction.

Description

Technical Field

[0001] This utility model relates to the field of data cables, and more particularly to a retractable cable. Background Technology

[0002] Existing retractable cable devices (such as charging cable and headphone cable reels) are widely used in the field of electronic devices to achieve orderly storage and flexible access to data cables. Traditional devices typically use an elastic element to drive a rotating base for automatic cable retraction. Their structure mainly includes a housing, a rotatable rotating base, and the data cable wound around it. However, existing technology has significant drawbacks. For example, when the data cable is retracted to the final stage, the remaining elastic potential energy of the elastic element is released in a concentrated manner, causing a sudden increase in the rotation speed of the rotating base. The end of the data cable impacts the high-speed rebound at a high speed, which can easily collide with the user's palm, causing pain or scratches, affecting the user experience and safety. Therefore, there is an urgent need for a retractable cable device that can precisely control the retraction speed. Utility Model Content

[0003] To overcome the shortcomings of the prior art, this utility model provides a telescopic cable device, which, by setting a damping element, enables the contact force between the cable and the data cable to generate effective friction, thereby slowing down the speed of the data cable during the retraction process.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] A telescopic cable device includes: a housing having an enclosure forming a mounting cavity, the housing having a through hole communicating with the mounting cavity; a rotating base rotatably disposed within the mounting cavity; a data cable, one end of which is connected to the rotating base, and the other end of which is connected to a connector, the data cable passing through the through hole so that the connector is exposed outside the housing; the data cable includes a wound state and an unwound state, wherein when the data cable is wound, it is located within the mounting cavity and wound around the rotating base, and when the data cable is unwound, at least part of it is located outside the mounting cavity; and a damping element disposed within the mounting cavity and fixedly connected to the housing, wherein when the data cable is wound, the damping element abuts against the data cable.

[0006] As a further improvement to this solution, the data cable includes a winding portion and an unfolding portion. The unfolding portion connects the winding portion and the connector. When the data cable is in a winding state, the winding portion is wound into a circular structure with a maximum radius R. The distance between the damping element and the center of the circular structure is less than the maximum radius R.

[0007] As a further improvement to this solution, the data line has a thickness dimension x along the radial direction of the circular structure, and the distance between the damping element and the center of the circular structure is Rx.

[0008] As a further improvement to this solution, the damping element is disposed on the housing near the through hole, and the damping element abuts against the side of the unfolded portion opposite to the rotating seat.

[0009] As a further improvement to this solution, the damping element abuts against the outermost ring of the winding portion.

[0010] As a further improvement to this solution, the damping component includes a fixed part and an elastic part. The elastic part is disposed in the middle of the fixed part. The fixed part is fixedly connected to the housing. When the data cable is in a wound state, the elastic part abuts against the data cable.

[0011] As a further improvement to this solution, the elastic part is a spring arm structure, and the elastic part and the fixing part are integrally formed.

[0012] As a further improvement to this solution, the elastic part is bent toward the data line to form a protrusion, and the protrusion is configured as a contact end that contacts the data line.

[0013] As a further improvement to this solution, the contact end surface is either curved or flat.

[0014] As a further improvement to this solution, the two sides of the fixing part are provided with fixing edges extending away from the data line. The fixing edges and the fixing part enclose a clearance space. When the elastic part abuts against the data line, the elastic part is at least partially located within the clearance space.

[0015] The beneficial effects of this invention are: by incorporating a damping element, the contact force between the element and the data cable generates effective friction, thereby slowing down the data cable's retraction speed. Especially in the final retraction stage, due to the frictional effect of the damping element, the data cable does not rebound rapidly during retraction, but gradually slows down, preventing the data cable from suddenly hitting the hand or causing other accidental injuries due to excessively rapid retraction. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is an assembly diagram of the present invention; Figure 2 This is a cross-sectional schematic diagram of the present invention; Figure 3 This is an exploded view of the structure of this utility model; Figure 4 This is a schematic diagram of the structure of the damping component of this utility model.

[0018] Explanation of reference numerals in the attached drawings: 1. Housing; 11. Through hole; 12. Mounting cavity; 2. Data cable; 21. Winding part; 22. Unwinding part; 23. Connector; 3. Rotating seat; 4. Damping element; 41. Fixing part; 42. Elastic part; 421. Contact end; 43. Fixing edge. Detailed Implementation

[0019] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other.

[0020] Reference Figures 1 to 4 This utility model provides a retractable cable device that can be used in devices such as chargers, power banks, and earphones. The internal data cable 2 can automatically wind around the rotating base 3 and be stored back into the housing 1. This device ensures functionality while allowing the data cable 2 to be stored. The retractable cable device includes a housing 1, which forms a mounting cavity 12. The mounting cavity 12 is mainly used to accommodate the data cable 2 and other structures. The housing 1 also has a through hole 11 that communicates with the mounting cavity 12. The through hole 11 allows the data cable 2 to smoothly extend or retract from the housing 1, while ensuring that the storage process of the data cable 2 is not obstructed.

[0021] Specifically, the mounting cavity 12 includes a rotating base 3 and a data cable 2. The rotating base 3 can rotate freely within the mounting cavity 12, and the data cable 2 is automatically wound around the rotating base 3 by means of elastic sheets. One end of the data cable 2 is connected to the rotating base 3, and the other end extends to the outside through the through hole 11 on the housing 1 and connects to the connector 23 for user convenience. When the data cable 2 is wound, it is tightly wound around the rotating base 3 and neatly stored in the mounting cavity 12 of the housing 1. Through the rotation mechanism of the rotating base 3, the data cable 2 can be easily unfolded, facilitating connection to external devices for charging or data transfer.

[0022] When the data cable 2 is extended, it drives the rotating base 3 to rotate. The rotating base 3 itself rotates and resets itself through an elastic sheet wound inside, so it rotates relatively quickly when resetting. Therefore, the data cable 2 retracts quickly, and the data head on the data cable 2 can easily hit the user's hand or the housing 1, causing injury. Therefore, a damping element 4 is also provided in the mounting cavity 12 to slow down the retraction speed of the data cable 2. The damping element 4 is precisely fixed in the mounting cavity 12 and fixedly connected to the housing 1. Its position is kept at the same horizontal line as the data cable 2, ensuring that the damping element 4 can make full contact with the data cable 2 during the retraction process, generating appropriate friction and preventing the data cable 2 from suddenly hitting the hand or causing injury due to retraction too quickly.

[0023] Furthermore, the data cable 2 includes a winding portion 21 and an unfolding portion 22. The winding portion 21 is the part of the wire wound around the rotating base 3, and the unfolding portion 22 is the part extending from the winding portion 21 to the outer part of the housing 1. The unfolding portion 22 connects the winding portion 21 and the connector 23. The winding portion 21 has a circular structure with a maximum radius R when the data cable 2 is in the winding state. In this design, to ensure that the damping element 4 can contact the data cable 2, the distance between the damping element 4 and the center of the winding portion 21 of the data cable 2 is less than the maximum radius R. Specifically, the installation position of the damping element 4 ensures that it contacts the winding portion 21 of the data cable 2 when the data cable 2 is in the winding state. Through this design, the contact force between the damping element 4 and the data cable 2 can generate effective friction, thereby slowing down the speed of the data cable 2 during the retraction process, especially in the final stage of retraction. Due to the friction of the damping element 4, the data cable 2 will not rebound rapidly during retraction, but will gradually slow down, avoiding the data cable 2 from suddenly hitting the hand or causing other accidental injuries due to excessively rapid retraction.

[0024] Preferably, the data cable 2 has a thickness dimension x, ensuring that the data cable 2 contacts the damping element 4 when it is wound to the last turn. The thickness dimension is located radially along the winding portion 21. The installation position of the damping element 4 is Rx from the center of the circular structure, where R is the maximum radius of the winding portion 21 of the data cable 2. With this design, the frictional force of the damping element 4 only acts on the outermost layer of the data cable 2 in the retracted state, while the retraction speed of the inner layer of the data cable 2 remains unchanged, continuing to wind and unwind at a normal speed. As the winding portion 21 gradually winds to its maximum size, the outermost layer of the data cable 2 gradually contacts the damping element 4, thus slowly reducing its speed. Since the damping element 4 only contacts the outermost layer of the data cable 2, it does not significantly hinder or affect the overall operation of the device. The inner layer of the data cable 2 can still retract at a relatively high speed, while the outermost layer of the data cable 2 gradually decelerates, ensuring that the last section of the cable can be safely and smoothly retracted into the device.

[0025] When the data cable 2 is unfolded or retracted, it moves within the mounting cavity 12. To ensure smooth movement, a damping element 4 is positioned in the area of ​​the housing 1 near the through hole 11 to avoid obstructing the retraction path of the data cable 2. The damping element 4 is positioned to contact the unfolding part 22. The unfolding part 22 changes its position and orientation as the winding part 21 assembly increases. Therefore, the damping element 4 is positioned to contact the side of the unfolding part 22 away from the rotating seat 3, which is the direction in which the winding gradually increases. This ensures that the unfolding part 22 moves to the position of the damping element 4, ensuring that the frictional force of the damping element 4 is only generated in the retracted state. At the same time, it effectively prevents the damping element 4 from directly interfering with the retraction path of the data cable 2, ensuring that the data cable 2 can be smoothly retracted from the housing 1.

[0026] As another embodiment of this utility model, the damping member 4 can contact the outermost layer of the winding part 21 in addition to the unfolding part 22. Specifically, since the winding part 21 of the data cable 2 is a circular structure and the outermost ring of the data cable 2 is the last part to be retracted, the design of the damping member 4 contacting the outermost ring can prevent excessive friction during the initial retraction stage of the data cable 2, and instead focus on the final deceleration effect.

[0027] Preferably, the damping element 4 includes two parts: a fixed part 41 and an elastic part 42. The elastic part 42 is located in the middle of the fixed part 41. The fixed part 41 is responsible for securely installing the damping element 4 in the device. Its function is to fix the damping element 4 and ensure that the elastic part 42 will not be displaced or fail due to external force during operation. The elastic part 42 is specially designed to generate a buffering effect to avoid excessive friction during the data cable 2 recycling process, which could cause the connection to be too tight or hinder the recycling process.

[0028] Furthermore, the structure of the damping component 4 is further simplified to improve the overall efficiency and convenience of the device. The elastic part 42 adopts a spring arm structure and is integrally formed with the fixing part 41. The fixing part 41 is a metal plate, and the elastic part 42 is a spring arm opened in the middle of the metal plate, with one end being a free end and the other end connected to the fixing part 41. This integrated design not only makes the installation process simpler but also ensures the stability and efficiency of the damping component 4, avoids connection problems between multiple independent parts, avoids assembly errors or loosening, and improves the overall durability and stability of the damping component 4.

[0029] The structure of the elastic part 42 is further optimized, bending towards the data cable 2 to form a protrusion. The function of the protrusion is to provide a more stable contact end 421 for the damping element 4, ensuring sufficient contact between it and the data cable 2. As the data cable 2 is retracted, the protrusion of the elastic part 42 will make close contact with the data cable 2. At different stages of the data cable 2 retraction process, the elastic part 42 will generate appropriate pressure, thereby controlling the transmission of frictional force and gradually bringing the data cable 2 and the damping element 4 into close contact. Preferably, the surface of the contact end 421 is designed as a curved or planar structure, which can ensure that the contact end 421 distributes the contact pressure with the data cable 2 over a larger area. Through uniform contact force distribution, wear on the data cable 2 is reduced, and excessive local pressure is avoided, which may cause scratches or damage to the cable surface. At the same time, the smoothness and safety of the data cable 2 retraction are ensured, thereby effectively protecting the integrity of the data cable 2.

[0030] Specifically, fixing edges 43 extend from both sides of the fixing part 41 away from the cable. These fixing edges 43 secure the fixing part 41 to the housing 1. The two fixing edges 43, the fixing part 41, and the housing 1 together form a clearance space, providing sufficient room for the elastic part to swing. When the elastic part comes into contact with the data cable 2, at least a portion of the elastic part will be located within this clearance space, ensuring that the elastic part can swing freely and achieve effective shock absorption and cushioning. In addition, the clearance space also has a certain buffering effect. When the elastic part contacts the data cable 2, the clearance space can effectively absorb the impact force during the recovery process, reducing the burden on other internal components and extending the overall service life of the damping component 4.

[0031] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A telescopic cable device, characterized in that, include: The housing has an enclosure forming a mounting cavity, and the housing also has a through hole communicating with the mounting cavity; A rotating seat is rotatably disposed within the mounting cavity; A data cable, one end of which is connected to the rotating base, and the other end of which is connected to a connector. The data cable passes through the through hole so that the connector is exposed outside the housing. The data cable has a wound state and an unwound state. When the data cable is wound, it is located inside the mounting cavity and wound around the rotating base. When the data cable is unwound, it is at least partially located outside the mounting cavity. A damping element is disposed within the mounting cavity and fixedly connected to the housing. When the data cable is in a wound state, the damping element abuts against the data cable.

2. The telescopic line device according to claim 1, characterized in that, The data cable includes a winding portion and an unfolding portion. The unfolding portion connects the winding portion and the connector. When the data cable is in a winding state, the winding portion is wound into a circular structure with a maximum radius R. The distance between the damping element and the center of the circular structure is less than the maximum radius R.

3. The telescopic line device according to claim 2, characterized in that, The data line has a thickness dimension x along the radial direction of the circular structure, and the distance between the damping element and the center of the circular structure is Rx.

4. The telescopic line device according to claim 2, characterized in that, The damping element is disposed on the housing near the through hole, and the damping element abuts against the side of the unfolded part away from the rotating seat.

5. The telescopic line device according to claim 2, characterized in that, The damping element abuts against the outermost ring of the winding portion.

6. The telescopic line device according to claim 1, characterized in that, The damping component includes a fixed part and an elastic part. The elastic part is disposed in the middle of the fixed part. The fixed part is fixedly connected to the housing. When the data cable is in a wound state, the elastic part abuts against the data cable.

7. The telescopic line device according to claim 6, characterized in that, The elastic part is a spring arm structure, and the elastic part and the fixing part are integrally formed.

8. The telescopic line device according to claim 6, characterized in that, The elastic portion bends toward the data line to form a protrusion, and the protrusion is configured as a contact end that contacts the data line.

9. The telescopic line device according to claim 8, characterized in that, The contact end surface is either curved or flat.

10. The telescopic line device according to claim 6, characterized in that, The fixing part has fixing edges extending on both sides away from the data line. The fixing edges and the fixing part enclose a clearance space. When the elastic part abuts against the data line, the elastic part is at least partially located within the clearance space.

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