Charging cable convenient to contract and extend

Abstract

The utility model provides a charging cable convenient for contraction and extension, and relates to the technical field of cables, the charging cable comprises an outer ring and a wire, the inner part of the outer ring is fixedly connected with a contraction and release assembly, the outer side of the contraction and release assembly is fixedly connected with a protection connection assembly, the contraction and release assembly comprises an inner ring and a driven power ring, and the outer side of the inner ring is fixedly connected in the outer ring. A clockwork spring is fixedly connected in the inner ring, and one end, away from the inner ring, of the clockwork spring is fixedly connected with a connecting shaft; in the process, the connecting ring and the nesting ring on the outer side also move synchronously, and smooth retraction is achieved through the sliding grooves. According to the design, the pulling-out and retracting speed of the electric wire can be controlled, potential safety hazards caused by rapid pulling-out or excessive stretching of the cable are avoided, the situation that the cable is wound, mopped to the ground or trampled is avoided through an electric wire retracting mechanism, the problem that the length of the cable is not adaptive due to different parking space layouts is effectively solved, and the service life of the cable is prolonged. And unnecessary physical damage is avoided.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, and in particular to a charging cable that is easy to shrink and extend. Background Technology

[0002] Charging cables are key components connecting electric vehicles to charging stations or power sources, used to transfer electrical energy to the electric vehicle's battery. These cables not only need to have high conductivity, but also good insulation, heat resistance, abrasion resistance, and flexibility to ensure safe and reliable operation in various environments.

[0003] During the charging process of electric vehicles, the actual distance between the vehicle and the charging station may vary due to differences in the layout and design of parking spaces. This makes it impossible for the length of the charging cable to flexibly adapt to various different distances. Overly long cables may be accidentally stepped on or run over by passing pedestrians or vehicles, or even scratched or cut by sharp objects. These damages not only affect the service life of the charging cable, but may also pose safety hazards, leading to malfunctions or accidents during the charging process.

[0004] Therefore, this utility model provides a charging cable that is easy to shrink and extend. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a charging cable that is easy to shrink and extend.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a charging cable that is easy to retract and extend, comprising an outer ring and a wire, wherein a retraction assembly is fixedly connected inside the outer ring, and a protective connection assembly is fixedly connected outside the retraction assembly.

[0007] The retraction assembly includes an inner ring and a driven power ring. The outer side of the inner ring is fixedly connected to the inside of the outer ring. A spring is fixedly connected inside the inner ring. A connecting shaft is fixedly connected to the end of the spring away from the inner ring. Both ends of the connecting shaft are fixedly connected to a driving power ring.

[0008] In a preferred embodiment, the protective connection assembly includes a first connecting ring, the inside of which is fixedly connected to the outside of the active power ring, and a nested ring is fixedly connected to the outside of the driven power ring. A sliding groove is provided inside the first connecting ring, and connecting telescopic columns are fixedly connected to both ends of one side of the driven power ring, while both sides of the active power ring are fixedly connected to the connecting telescopic columns.

[0009] The technical effects of adopting the above technical solution are: it can automatically retract when not in use, saving space; it can be easily pulled out when in use; and due to the action of the spring, it can maintain appropriate tension and prevent the cable from becoming excessively slack.

[0010] In a preferred embodiment, the outer side of the wire is slidably connected to the inside of the active power coil and the driven power coil.

[0011] The technical effect of adopting the above technical solution is that the wire can slide smoothly between the power coils during use, thereby realizing the extension and retraction function of the cable.

[0012] In a preferred embodiment, the outer side of the wire is fixedly connected to the inside of the inner ring.

[0013] The technical effect of adopting the above technical solution is to ensure that the rotational force can be stably transmitted to the wire.

[0014] In one preferred embodiment, the end of the active power ring furthest from the inner ring is fixedly connected to the connecting telescopic column.

[0015] The technical effect of adopting the above technical solution is that when the active power ring rotates, it can drive the driven power ring to rotate together.

[0016] In a preferred embodiment, a connecting ring is fixedly connected to the outer side of the driven power ring.

[0017] The technical effect of adopting the above technical solution is that it enables connecting ring one and connecting ring two to achieve a real-time protective effect, protecting the internal structure.

[0018] In a preferred embodiment, the outer ends of the first connecting ring are slidably connected to the nested ring via grooves.

[0019] The technical effect of adopting the above technical solution is to ensure that the connecting ring can move smoothly during the cable expansion and contraction process.

[0020] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0021] This invention utilizes the preload of a spring and the rotational structure of active and driven power coils. When the user pulls out the charging cable, the cable encounters resistance, controlling the pulling speed and ensuring operational safety. After charging is complete, the user retracts the cable, and the connecting shaft drives the active power coil to rotate. This rotational force causes the cable to automatically retract, simultaneously rotating the driven power coil to neatly wind the cable. During this process, the outer connecting and nesting coils also move synchronously, achieving smooth retraction through a sliding groove. This design controls the cable pulling and retraction speed, avoiding safety hazards caused by rapid cable pulling or excessive stretching. Furthermore, the cable retraction mechanism prevents cable tangling, dragging on the ground, or being stepped on, effectively solving the problem of cable length incompatibility due to different parking space layouts and avoiding unnecessary physical damage. Attached Figure Description

[0022] Figure 1 A schematic diagram showing the extension of a charging cable that is easy to shrink and extend, provided by this utility model;

[0023] Figure 2 A schematic diagram of the retraction of a charging cable that is easy to shrink and extend, provided by this utility model;

[0024] Figure 3 A schematic diagram of a protective connection assembly for a charging cable that is easy to shrink and extend, provided by this utility model;

[0025] Figure 4 A schematic diagram of a retractable charging cable assembly for easy retraction and extension provided by this utility model;

[0026] Figure 5 This is a schematic diagram showing the disassembled structure of a retractable charging cable assembly that facilitates shrinking and extension, as provided by this utility model.

[0027] Legend:

[0028] 1. Outer ring;

[0029] 2. Retraction and extension assembly; 21. Inner ring; 22. Mainspring spring; 23. Connecting shaft; 24. Driving power ring; 25. Driven power ring;

[0030] 3. Protective connection assembly; 31. Connecting ring one; 32. Nested ring; 33. Sliding groove; 34. Connecting telescopic column;

[0031] 4. Electrical wires. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] like Figure 1 - Figure 5 As shown, this embodiment provides a technical solution: a charging cable that is easy to retract and extend, including an outer ring 1 and a wire 4, with a retraction component 2 fixedly connected inside the outer ring 1;

[0034] The retraction assembly 2 includes an inner ring 21 and a driven power ring 25. The outer side of the wire 4 is fixedly connected to the inside of the inner ring 21. The outer side of the inner ring 21 is fixedly connected to the inside of the outer ring 1. A spring 22 is fixedly connected inside the inner ring 21. A connecting shaft 23 is fixedly connected to one end of the spring 22 away from the inner ring 21. Both ends of the connecting shaft 23 are fixedly connected to the driving power ring 24. The outer side of the wire 4 is slidably connected to the inside of the driving power ring 24 and the driven power ring 25.

[0035] The inner ring 21 serves as the fixing point for the wire 4, ensuring its stability and directionality during retraction and extension. Simultaneously, the inner ring 21 connects to the outer ring 1, providing support for the entire assembly. The driven power ring 25 cooperates with the inner ring 21, enabling smooth retraction and extension of the wire 4 through its sliding connection. The design of the driven power ring 25 ensures that the wire 4 maintains its designated working position during retraction and extension, preventing slack or overstretching. The spring 22, located inside the inner ring 21, provides the power source for the entire device. When the wire 4 is pulled out, the spring 22 stores energy; when the wire 4 is released, the spring 22 releases energy, helping the wire 4 retract quickly. The connecting shaft 23 connects the spring 22 and the driving power ring 24, transmitting the power from the spring 22 to the driving power ring 24, thereby driving the retraction and extension of the wire 4. The driving power ring 24 is fixedly connected to the connecting shaft 23, and it drives the retraction and extension of the wire 4 by rotation.

[0036] like Figure 2 - Figure 5As shown, a protective connecting component 3 is fixedly connected to the outer side of the retractable component 2. The protective connecting component 3 includes a connecting ring 31. The outer side of the driven power ring 25 is fixedly connected to the connecting ring 31. The inner side of the connecting ring 31 is fixedly connected to the outer side of the active power ring 24. The outer side of the driven power ring 25 is fixedly connected to the nested ring 32. The outer ends of the connecting ring 31 are slidably connected to the nested ring 32 through the sliding groove 33. The inner side of the connecting ring 31 has a sliding groove 33. Both ends of one side of the driven power ring 25 are fixedly connected to the connecting telescopic column 34. Both sides of the active power ring 24 are fixedly connected to the connecting telescopic column 34. The end of the active power ring 24 away from the inner ring 21 is fixedly connected to the connecting telescopic column 34.

[0037] Connecting ring 31 is located on the outside of driven power ring 25 and is fixedly connected to the outside of active power ring 24, ensuring a stable connection between driven power ring 25 and active power ring 24 and preventing relative displacement between them during movement. Nested ring 32 works in conjunction with connecting ring 31, and achieves sliding and rotating connection through sliding groove 33, thereby providing the necessary flexibility for the winding and unwinding of wire 4. At the same time, nested ring 32 and connecting ring 31 can also protect the internal structure from external factors. The design of sliding groove 33 allows connecting ring 31 to move smoothly on nested ring 32, thereby adapting to the length changes of wire 4 during winding and unwinding. Connecting telescopic column 34 is a structure that is fixedly connected to both ends of one side of driven power ring 25, and it is also fixedly connected to both sides of active power ring 24. The design of connecting telescopic column 34 makes the length of the entire winding and unwinding assembly 2 adjustable, which can be adjusted according to actual needs.

[0038] Working principle:

[0039] like Figure 1 - Figure 5 As shown:

[0040] In use: When charging is required, the user simply pulls out the power cord 4, which will smoothly slide out between the active power coil 24 and the driven power coil 25. Due to the preload of the spring 22, the power cord 4 experiences some resistance during the pulling process, which helps control the pulling speed and ensures operational safety. After the power cord 4 is fully extended, the user can connect it to a charging device for charging. After charging is complete, the user puts the charging cable back in, and then, under the action of the spring 22, the active power coil 24 is rotated via the connecting shaft 23. At this time, the power cord 4 on the active power coil 24 will retract due to the rotational force, and will drive the driven power coil 25 to rotate synchronously, winding the power cord 4 inside the active power coil 24 and the driven power coil 25. At the same time, the outer connecting ring 31 and the nested ring 32 will move synchronously, causing the two ends of the nested ring 32 to slide or rotate in the groove 33, achieving a synchronous retraction effect. This completes the retraction of the power cord 4.

[0041] 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 other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A retractable and extendable charging cable, comprising an outer ring (1) and a wire (4), characterized in that, The outer ring (1) is fixedly connected to the inside of a retractable assembly (2), and the retractable assembly (2) is fixedly connected to the outside of a protective connection assembly (3). The retraction assembly (2) includes an inner ring (21) and a driven power ring (25). The outer side of the inner ring (21) is fixedly connected to the inside of the outer ring (1). A spring (22) is fixedly connected inside the inner ring (21). A connecting shaft (23) is fixedly connected to one end of the spring (22) away from the inner ring (21). Both ends of the connecting shaft (23) are fixedly connected to the driving power ring (24).

2. The charging cable that is easy to shrink and extend according to claim 1, characterized in that: The protective connection assembly (3) includes a first connecting ring (31), the inside of which is fixedly connected to the outside of the active power ring (24), and the outside of the driven power ring (25) is fixedly connected to a nested ring (32). A sliding groove (33) is provided inside the first connecting ring (31). Both ends of one side of the driven power ring (25) are fixedly connected to a connecting telescopic column (34), and both sides of the active power ring (24) are fixedly connected to the connecting telescopic column (34).

3. The charging cable that is easy to shrink and extend according to claim 1, characterized in that: The outer side of the wire (4) is slidably connected to the inside of the active power coil (24) and the driven power coil (25).

4. A charging cable that is easy to shrink and extend according to claim 1, characterized in that: The outer side of the wire (4) is fixedly connected to the inner wall of the inner ring (21).

5. A charging cable that is easy to shrink and extend according to claim 2, characterized in that: The end of the active power ring (24) away from the inner ring (21) is fixedly connected to the connecting telescopic column (34).

6. A charging cable that is easy to shrink and extend according to claim 2, characterized in that: A connecting ring (31) is fixedly connected to the outer side of the driven power ring (25).

7. A charging cable that is easy to shrink and extend according to claim 2, characterized in that: The outer ends of the connecting ring (31) are slidably connected to the nested ring (32) via the groove (33).

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