A smooth pulling structure of a power bank charging line with an optical axis auxiliary

Abstract

The utility model discloses a kind of with the smooth pulling structure of light axis auxiliary power bank charging wire, including shell assembly and charging transmission line assembly. One corner of shell assembly is provided with pull chamber. One end of charging transmission line assembly is installed in the inside of shell assembly, and the other end is penetrated from the inside of shell assembly to pull chamber, and then is pulled to the outside of shell assembly from the pull chamber. Wherein, two light axes are provided in pull chamber, and the outer contour surface of at least one light axis is attached to one side of charging transmission line assembly in pull chamber. Traditional sliding friction is changed into rolling friction, so that the resistance when charging transmission line assembly is pulled is greatly reduced, so that user can realize the smooth pulling of charging wire by light operation.

Description

Technical Field

[0001] This utility model relates to the technology of power bank accessories, and in particular to a smooth pull-out structure for power bank charging cables with optical axis assistance. Specifically, it is a structural design that optimizes the smoothness of the charging cable pull-out channel by using optical axis-assisted rotation. Background Technology

[0002] Power banks, as portable charging devices, have become indispensable electronic products in modern life. To further improve user convenience, many power bank products have begun to incorporate retractable charging cables, allowing users to charge their mobile devices without having to carry an additional data cable.

[0003] Existing technologies include, for example, CN222638214U, which proposes a portable power bank with a retractable data cable assembly on its casing. The exposed part of the data cable can pass through a cable hole to form a lanyard, which can be used as a charging cable and is convenient to carry. Similarly, CN207504588U proposes a portable power bank with a lanyard, which forms a hanging hole through a charging transmission cable fixed to the casing, realizing the dual functions of charging and hanging.

[0004] However, existing power banks with built-in pull-out charging cables still have significant technical flaws in practical use. During the pulling process, the high frictional resistance between the cable and the inner wall of the pull-out channel easily leads to jamming and even cable wear. Especially after repeated pulling, the wear on the inner wall of the channel or the surface of the cable further exacerbates the frictional resistance, affecting not only the user experience but also significantly shortening the lifespan of the charging cable. Analysis shows that existing pull-out channels are mostly simple guide groove structures, with the cable primarily experiencing sliding friction against the inner wall of the channel during pulling. Uneven force can easily lead to increased localized friction, causing jamming. Furthermore, existing designs provide insufficient protection for the cable; after prolonged use, friction can easily damage the cable insulation layer, even posing a short-circuit risk.

[0005] Therefore, optimizing the pull-out structure of the built-in charging cable in a power bank, reducing frictional resistance during the pull-out process, and ensuring a smooth and durable pull-out process have become urgent technical problems to be solved in this field. Utility Model Content

[0006] Based on the aforementioned technical problems, this utility model proposes a smooth pull-out structure for power bank charging cables with optical axis assistance. Addressing the issues of high pulling resistance and easy jamming in existing power bank charging cable pull-out channels, this utility model provides a power bank charging cable pull-out structure with optical axis assistance. Through the assisted rotation of the optical axis, the sliding friction between the cable and the inner wall of the channel is converted into rolling friction, thereby effectively reducing pulling resistance and achieving smooth pulling of the charging cable.

[0007] The technical solution of this utility model is implemented as follows:

[0008] A smooth pull-out structure for a power bank charging cable with optical axis assistance, characterized in that it includes:

[0009] A housing assembly, wherein a pull-out cavity is provided at one corner of the housing assembly;

[0010] A charging transmission line assembly, wherein one end of the charging transmission line assembly is installed inside the housing assembly, and the other end passes through the inside of the housing assembly to a pull-out cavity, and then is pulled out of the housing assembly through the pull-out cavity.

[0011] in,

[0012] The pull-out cavity is provided with two optical axes, wherein the outer contour surface of at least one optical axis is in contact with one side of the charging transmission line assembly located in the pull-out cavity.

[0013] Preferably, the optical axis is mounted in the pull-out cavity via a bearing.

[0014] Preferably, the two optical axes inside the pull-out cavity are respectively disposed on two sides of the charging transmission line assembly inside the pull-out cavity and are respectively attached to its sides.

[0015] Preferably, the pull-out cavity further includes a first pull-out port, a second pull-out port, and a third pull-out port. The charging transmission line assembly exits the housing assembly through the first pull-out port, then enters the pull-out cavity through the second pull-out port, and exits the pull-out cavity through the third pull-out port.

[0016] Preferably, the entrances and exits of the first pull-out opening, the second pull-out opening, and the third pull-out opening are uniformly provided with guide rounded corners.

[0017] Preferably, one end of the charging transmission line assembly is provided with a charging plug, and the housing assembly is provided with a receiving groove for receiving the charging plug.

[0018] Preferably, the receiving slot is composed of a wide slot and a narrow slot, wherein there is a depth difference between the wide slot and the narrow slot to limit the reverse pulling of the charging transmission line assembly.

[0019] The smooth pull-out structure of the power bank charging cable with optical axis assistance of this utility model has the following beneficial effects:

[0020] By setting two polished stainless steel rods with a diameter of 1.5mm inside the pull-out cavity as optical axes and allowing them to rotate flexibly, the traditional sliding friction is transformed into rolling friction, thereby greatly reducing the resistance when the charging cable assembly is pulled out, allowing users to smoothly pull out the charging cable with just a gentle operation.

[0021] Improved lifespan and safety: The rounded corner design at the pull-out end ensures a smooth transition and proper alignment with the optical axis when the charging cable is pulled out or retracted, effectively solving the problems of jamming and wear in existing technologies. This design also extends the lifespan of the charging cable and enhances safety during use.

[0022] Enhanced storage functionality and aesthetics: The housing assembly features a recessed slot to securely store the charging plug, preventing damage or affecting the overall appearance caused by the plug being exposed when not in use. The specially designed depth difference between the wide and narrow slots not only improves the convenience and safety of charging cable storage but also prevents internal structural loosening or wire breakage due to accidental operation. Attached Figure Description

[0023] Figure 1 A schematic diagram of the smooth pull-out structure of the power bank charging cable of this utility model;

[0024] Figure 2 A partial structural diagram of the smooth pull-out structure of the power bank charging cable of this utility model;

[0025] Figure 3 A partial structural diagram of the smooth pull-out structure of the power bank charging cable of this utility model;

[0026] Figure 4 for Figure 3 Enlarged structural diagram at point A;

[0027] The reference numerals in the attached drawings are: housing assembly 10, pull-out cavity 11, first pull-out opening 12, second pull-out opening 13, third pull-out opening 14, receiving groove 15, wide body groove 15A, narrow body groove 15B, optical axis 16, charging transmission line assembly 20, and charging plug 21. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0029] Reference Figures 1 to 4 As shown, this utility model proposes a smooth pull-out structure for a power bank charging cable with optical axis assistance, including a housing assembly 10 and a charging transmission line assembly 20.

[0030] The housing assembly 10 is generally rectangular in structure, and houses the battery and the circuit board for charging and discharging the controller. The charging transmission line assembly 20 is connected to the battery installed inside the housing assembly 10 and is used for discharging to the outside.

[0031] The housing assembly 10 has a pull-out cavity 11 at one corner. One end of the charging transmission line assembly 20 is installed inside the housing assembly 10, and the other end passes through the housing assembly 10 to the pull-out cavity 11, and is then pulled out of the housing assembly 10 through the pull-out cavity 11, which guides the pulling direction of the charging transmission line assembly 20.

[0032] In this embodiment, two optical axes 16 are provided inside the pull-out cavity 11, wherein the outer contour surface of at least one optical axis 16 is in contact with one side of the charging transmission line assembly 20 located inside the pull-out cavity. The optical axis 16 is made of stainless steel round bar with a diameter of 1.5 mm and the outer surface is polished.

[0033] The optical axis 16 is mounted in the pull-out cavity 11 via a bearing to ensure that the optical axis 16 can rotate flexibly.

[0034] Preferably, the two optical axes 16 inside the pull-out cavity 11 are respectively disposed on the two sides of the charging transmission line assembly 20 inside the pull-out cavity 11 and respectively attached to its sides.

[0035] In this embodiment, the pull-out cavity 11 includes a first pull-out port 12, a second pull-out port 13 and a third pull-out port 14. The charging transmission line assembly 20 passes through the housing assembly 10 through the first pull-out port 12, then enters the pull-out cavity 11 through the second pull-out port 13, and finally exits the pull-out cavity 11 through the third pull-out port 13.

[0036] The entrances and exits of the first pull-out opening 12, the second pull-out opening 13, and the third pull-out opening 14 are machined with guide radii of 0.5mm.

[0037] When the charging transmission line assembly 20 is pulled outward or retracted inward, the guide rounded corners can guide the charging transmission line assembly 20 to smoothly enter and exit the pull-out cavity 11 and fit the optical axis 16.

[0038] This invention proposes a smooth pull-out structure for a power bank charging cable with optical axis assistance. The structure includes a housing assembly 10 and a charging transmission line assembly 20. The housing assembly 10 has a pull-out cavity 11. One end of the charging transmission line assembly 20 is connected to the internal battery, and the other end extends outward through the pull-out cavity 11. Two optical axes 16 are installed inside the pull-out cavity 11. The optical axes 16 are polished stainless steel round bars with a diameter of 1.5mm and rotate flexibly via bearings. During the pull-out process, the charging transmission line assembly 20 contacts the optical axes 16, converting traditional sliding friction into rolling friction, thereby significantly reducing resistance. Furthermore, the inlet and outlet of the pull-out cavity 11 have guide rounded corners with a radius of 0.5mm to ensure a smooth transition and contact with the optical axes 16 when the charging cable is pulled out or retracted. This solves the problems of easy jamming and wear in existing charging cables, extends service life, and is simple in structure, easy to manufacture and promote. During operation, the user only needs to gently pull out or retract the charging cable, and the optical axes 16 will rotate synchronously, achieving smooth and unobstructed pull-out.

[0039] Furthermore, in the process of use, the smooth pull-out structure of the power bank charging cable of this utility model stores and fixes the charging plug 21 through the receiving groove 15 provided on the housing assembly 10, thereby preventing the charging plug 21 from being exposed when not in use, which could cause damage or affect the overall appearance. The charging plug 21 is located at one end of the charging transmission line assembly 20. When the charging cable is not in use, it can be inserted into the receiving groove 15 for storage.

[0040] Furthermore, the receiving slot 15 includes a wide slot 15A and a narrow slot 15B, with a depth difference between them. The plug portion of the charging plug 21 is larger than the opening size of the narrow slot 15B, but can be smoothly inserted into the wide slot 15A. When the user attempts to pull the charging cable assembly 20 in reverse (i.e., pull the cable into the housing), the charging plug 21 will be blocked by the narrow slot 15B, thus preventing the charging cable from being accidentally pulled or loosened, achieving a limiting protection function. This improves the convenience and safety of charging cable storage, and also effectively prevents internal structural loosening or circuit breakage due to misoperation, further enhancing the product's stability and service life.

[0041] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A smooth pull-out structure for a power bank charging cable with optical axis assistance, characterized in that, include: A housing assembly, wherein a pull-out cavity is provided at one corner of the housing assembly; A charging transmission line assembly, wherein one end of the charging transmission line assembly is installed inside the housing assembly, and the other end passes through the inside of the housing assembly to a pull-out cavity, and then is pulled out of the housing assembly through the pull-out cavity. in, The pull-out cavity is provided with two optical axes, wherein the outer contour surface of at least one optical axis is in contact with one side of the charging transmission line assembly located in the pull-out cavity.

2. The smooth pull-out structure of the power bank charging cable according to claim 1, characterized in that, The optical axis is mounted in the pull-out cavity via a bearing.

3. The smooth pull-out structure of the power bank charging cable according to claim 2, characterized in that, The two optical axes inside the pull-out cavity are respectively located on the two sides of the charging transmission line assembly inside the pull-out cavity, and are respectively attached to its sides.

4. The smooth pull-out structure of the power bank charging cable according to claim 1, characterized in that, The pull-out cavity also includes a first pull-out port, a second pull-out port, and a third pull-out port. The charging transmission line assembly passes through the housing assembly through the first pull-out port, then enters the pull-out cavity through the second pull-out port, and then exits the pull-out cavity through the third pull-out port.

5. The smooth pull-out structure of the power bank charging cable according to claim 4, characterized in that, Guide rounded corners are evenly provided at the entrances and exits of the first, second, and third pull-out openings.

6. The smooth pull-out structure of the power bank charging cable according to claim 1, characterized in that, One end of the charging transmission line assembly is provided with a charging plug, and the housing assembly is provided with a receiving groove for receiving the charging plug.

7. The smooth pull-out structure of the power bank charging cable according to claim 6, characterized in that, The receiving slot is composed of a wide slot and a narrow slot, wherein there is a depth difference between the wide slot and the narrow slot to restrict the reverse pulling of the charging transmission line assembly.

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