Electric bicycle power supply charging plug with improved plug spring
By designing protective components and heat dissipation structures on the prongs of the electric bicycle power charging plug, the problem of plug loosening and wear has been solved, enabling the protective cover to be replaced and achieving efficient heat dissipation, thus extending its service life.
Patent Information
- Application Number
- CN202520629370.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-07
- Publication Date
- 2026-03-06
- Estimated Expiration
- 2035-04-07
AI Technical Summary
Existing electric bicycle power charging plugs tend to loosen after prolonged use, leading to wear on the prongs and reduced tightening effectiveness, necessitating complete replacement.
A plug with protective components is designed, including a protective sleeve and a heat dissipation structure. The protective sleeve has a waterproof baffle on its surface and a U-shaped groove and heat dissipation channel inside. The protective sleeve is replaceable, and the heat on the surface of the plug is quickly discharged through the heat dissipation channel to prevent water from entering.
The plug's practicality has been improved, and the protective cover can be replaced directly after wear and tear for continued use. It has good heat dissipation, prevents water from entering, and extends the plug's service life.
Smart Images

Figure CN223978201U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of power charging plug technology, specifically to an electric bicycle power charging plug with an improved spring. Background Technology
[0002] The electric bicycle power charging plug is an important component that connects the electric bicycle to the power source. Its main function is to transfer electrical energy from the external power source to the electric bicycle's battery for charging.
[0003] The patent publication number CN206820200U discloses a charger plug, charger, and electric vehicle, including a plug and a power cord. A safety device is connected in series between the positive plug and the positive wire. The device also includes a core with a plug mounting hole and a safety device mounting groove. The plug is inserted into the plug mounting hole, and the safety device is snapped into the safety device mounting groove.
[0004] As shown in the above technology, the electric bicycle power charging plug usually consists of a plug and a power cord assembly. The plug is inserted into the socket of the electric bicycle. During insertion, the friction of the squeeze makes the plug stable in the socket. However, electric bicycles need to be charged repeatedly, which causes the surface of the plug to wear down and the external size to shrink, thereby reducing the fastening effect and making it easy to loosen. At this time, the entire charger needs to be replaced before it can be used. Utility Model Content
[0005] To address the shortcomings of existing technologies, this utility model provides an electric bicycle power charging plug with an improved spring, which solves the problem of existing electric bicycle power charging plugs becoming loose after prolonged use.
[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: an electric bicycle power charging plug with an improved spring includes a power cord and prongs, the prongs are fixedly connected to the power cord, the front outer contour of the prongs is recessed inward at equal intervals relative to the prongs, a protective component is provided on the outside of the prongs, and a heat dissipation structure is provided inside the protective component.
[0007] The protective component includes a protective sleeve that is fitted onto the front outer contour of the plug. A waterproof baffle is fixedly connected to the surface of the protective sleeve, and the waterproof baffle is used to prevent water from entering the plug and the interior of the plug. The protective sleeve rubs against the inner surface of the electric bicycle socket, and the protective sleeve can be quickly replaced after significant wear.
[0008] Preferably, the back of the protective cover is fixedly connected with multiple buckle rods, and the front of the plug has multiple buckle slots at equal intervals, and the buckle slots are L-shaped. The buckle rods can be inserted into the buckle slots to limit the position of the protective cover after installation.
[0009] Preferably, the heat dissipation structure includes multiple U-shaped grooves, which are equidistantly arranged on the inner surface of the protective sleeve. Multiple U-shaped grooves are equidistantly arranged inside the protective sleeve, and multiple heat dissipation channels are respectively connected to multiple protective sleeves. The structure formed by the U-shaped grooves and heat dissipation channels is used to quickly dissipate the heat generated on the surface of the pins.
[0010] Preferably, the heat dissipation channel consists of a straight section, an S-shaped section, and an inclined section, with the straight section and the inclined section located on the left and right sides of the S-shaped section, respectively.
[0011] Preferably, the straight portion is connected to the U-shaped groove, the inclined portion is connected to the outside, and the inclined structure of the inclined portion prevents water from entering the interior of the protective sleeve.
[0012] Preferably, a lever is rotatably connected between the top and bottom of the plug, and rotating the lever can quickly pull the plug out of the socket on the electric bicycle. Each plug hole is provided with an improved spring, and the two sides of the improved spring are convex to increase the elastic pressure on the conductive spring and reduce the conductive resistance.
[0013] Beneficial effects
[0014] This invention provides an electric bicycle power charging plug with an improved spring. Compared with the prior art, it has the following advantages:
[0015] 1. The electric bicycle power charging plug with improved spring clips includes a protective sleeve that is fitted over the outside of the prongs after they have been cut. A waterproof baffle is fixedly connected to the surface of the protective sleeve to prevent water from entering the prongs and their interior. The protective component is set on the surface of the prongs. By fitting the protective sleeve over the outside of the prongs, the protective sleeve rubs against the inner surface of the socket. Therefore, when the wear is significant, the protective sleeve can be directly replaced for continued use, improving the practicality of the device.
[0016] 2. The electric bicycle power charging plug with improved spring has a heat dissipation structure including multiple U-shaped grooves. The multiple U-shaped grooves are equally spaced on the inner surface of the protective sleeve. The interior of the protective sleeve has multiple U-shaped grooves equally spaced, and multiple heat dissipation channels are connected to multiple protective sleeves. The heat dissipation structure inside the protective sleeve can dissipate the heat generated on the surface of the plug in a timely manner. The inclined part of the heat dissipation channel can prevent water from entering between the protective sleeve and the plug. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the appearance of the present utility model;
[0018] Figure 2 This is a schematic diagram of the improved insert spring of this utility model;
[0019] Figure 3 This is a schematic diagram of the pins of this utility model;
[0020] Figure 4 This is an exploded view of the pins and protective components of this utility model;
[0021] Figure 5 This is an exploded view of the rear position of the pins of this utility model;
[0022] Figure 6 This is a cross-sectional view of the protective sleeve of this utility model.
[0023] In the diagram: 1. Power cord; 2. Plug; 3. Toggle switch; 4. Improved spring; 5. Protective components; 51. Protective sleeve; 52. Waterproof baffle; 53. Clip rod; 54. Clip groove; 6. Heat dissipation structure; 61. U-shaped groove; 62. Heat dissipation channel; 621. Straight section; 622. S-shaped section; 623. Inclined section. Detailed Implementation
[0024] 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.
[0025] Please see Figures 1-6 The electric bicycle power charging plug with improved spring provides a technical solution:
[0026] The first embodiment includes a power cord 1 and a plug 2. A lever 3 is rotatably connected between the top and bottom of the plug 2. Rotating the lever 3 can quickly pull the plug 2 out of the socket on the electric bicycle. An improved spring 4 is provided in the socket of the plug 2. The two sides of the improved spring 4 are convex to increase the elastic pressure on the conductive spring and reduce the conductive resistance. The plug 2 is fixedly connected to the power cord 1. The front outer contour of the plug 2 is recessed inward relative to the plug 2 at equal intervals. A protective component 5 is provided on the outside of the plug 2.
[0027] The protective component 5 includes a protective sleeve 51, which is fitted onto the front outer contour of the plug 2. A waterproof baffle 52 is fixedly connected to the surface of the protective sleeve 51, and the waterproof baffle 52 is used to prevent water from entering the plug 2 and the interior of the plug. The protective sleeve 51 rubs against the inner surface of the electric bicycle socket, and the protective sleeve 51 can be quickly replaced after significant wear. Multiple latching rods 53 are fixedly connected to the back of the protective sleeve 51. Multiple latching slots 54 are equally spaced on the front of the plug 2, and the latching slots 54 are L-shaped. The latching rods 53 can be inserted into the latching slots 54 to limit the position of the protective sleeve 51 after installation.
[0028] A protective component 5 is provided on the surface of the pin 2, and a protective sleeve 51 is fitted onto the outside of the pin 2. The protective sleeve 51 rubs against the inner surface of the socket, so that when the wear is too great, the protective sleeve 51 can be directly replaced and the device can continue to be used, which improves the practicality of the device.
[0029] The second embodiment differs from the first embodiment in that: the protective component 5 is provided with a heat dissipation structure 6, which includes multiple U-shaped grooves 61. The multiple U-shaped grooves 61 are equally spaced on the inner surface of the protective sleeve 51. The protective sleeve 51 is provided with multiple U-shaped grooves 61 equally spaced inside, and multiple heat dissipation channels 62 are respectively connected to multiple protective sleeves 51. The structure formed by the U-shaped grooves 61 and the heat dissipation channels 62 is used to quickly dissipate the heat generated on the surface of the pin 2. The heat dissipation channel 62 is composed of a straight part 621, an S-shaped part 622 and an inclined part 623. The straight part 621 and the inclined part 623 are located on the left and right sides of the S-shaped part 622, respectively. The straight part 621 is connected to the U-shaped grooves 61, and the inclined part 623 is connected to the outside. The inclined structure of the inclined part 623 prevents water from entering the interior of the protective sleeve 51.
[0030] The protective sleeve 51 is equipped with a heat dissipation structure 6 to dissipate the heat generated on the surface of the pin 2 in a timely manner, and the inclined part 623 of the heat dissipation channel 62 can prevent water from entering between the protective sleeve 51 and the pin 2.
[0031] In use, the protective cover 51 is placed over the outside of the plug 2, and the latching rod 53 is aligned with the latching groove 54 and inserted. After insertion, the position of the protective cover 51 is limited. When the plug 2 is inserted into the electric bicycle, the protective cover 51 rubs against the inner surface of the socket. When the protective cover 51 is severely worn, the protective cover 51 can be pulled out by squeezing the latching rod 53 for replacement. In addition, after the plug 2 is inserted into the socket, the heat generated on the surface of the plug 2 enters the U-shaped groove 61 and is discharged through the heat dissipation channel 62. The inclined part 623 of the heat dissipation channel 62 can prevent water from entering the protective cover 51.
[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An electric bicycle power supply charging plug with improved springing, comprising a power supply cord (1) and prongs (2), characterized in that: The plug (2) is fixedly connected with the power cord (1), the front outer contour of the plug (2) is inlaid at equal intervals, the outer part of the plug (2) is provided with a protection assembly (5), and the inner part of the protection assembly (5) is provided with a heat dissipation structure (6); The protection assembly (5) comprises a protective sleeve (51) which is sleeved on the front outer contour of the plug (2), the surface of the protective sleeve (51) is fixedly connected with a waterproof baffle (52), and the waterproof baffle (52) is used for preventing water from entering the plug (2) and the inside of the plug, the protective sleeve (51) is rubbed with the inner surface of the electric bicycle socket, and the protective sleeve (51) can be quickly replaced after being worn out.
2. The power charging plug for electric bicycle with improved spring according to claim 1, wherein: The back of the protective sleeve (51) is fixedly connected with a plurality of buckle rods (53), the front of the plug (2) is provided with a plurality of buckle grooves (54) at equal intervals, the buckle grooves (54) are L-shaped, and the buckle rods (53) can be inserted into the buckle grooves (54) to limit the position of the installed protective sleeve (51).
3. The power charging plug for electric bicycle with improved spring according to claim 1, wherein: The heat dissipation structure (6) comprises a plurality of U-shaped grooves (61), a plurality of U-shaped grooves (61) are provided at equal intervals on the inner surface of the protective sleeve (51), a plurality of U-shaped grooves (61) are provided at equal intervals in the protective sleeve (51), a plurality of heat dissipation channels (62) are respectively communicated with the plurality of protective sleeves (51), and the structure composed of the U-shaped grooves (61) and the heat dissipation channels (62) is used for quickly discharging the heat generated on the surface of the plug (2).
4. The power charging plug for electric bicycle with improved spring according to claim 3, wherein: The heat dissipation channel (62) is composed of a straight line part (621), an S-shaped part (622) and an inclined part (623), and the straight line part (621) and the inclined part (623) are respectively located on the left and right sides of the S-shaped part (622).
5. The electric bicycle power supply charging plug with improved spring-in plug according to claim 4, characterized in that: The straight line part (621) is communicated with the U-shaped groove (61), the inclined part (623) is communicated with the outside, and the inclined structure of the inclined part (623) prevents water from entering the inside of the protective sleeve (51).
6. The electric bicycle power supply charging plug with improved spring-in plug according to claim 1, characterized in that: The top and the bottom of the plug (2) are rotatably connected with a handle (3), and rotating the handle (3) can quickly pull out the plug (2) from the socket of the electric bicycle, and the plug hole of the plug (2) is provided with an improved spring (4), and the two sides of the improved spring (4) are designed as convex to increase the elastic pressure on the conductive spring and reduce the conductive resistance.
Citation Information
Patent Citations
Charger plug , charger and electric motor car
CN206820200U