A plug structure for discharging electric bicycles
By adopting a combination structure of metal pull ring, stop block assembly, and locking bolt assembly in the discharge plug of electric-assisted bicycles, the problems of difficult plug removal and abnormal noise in existing plugs are solved, achieving the effects of convenient removal and reduced production costs.
Patent Information
- Application Number
- CN202522364089.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-07
- Publication Date
- 2026-11-06
- Estimated Expiration
- 2035-11-07
AI Technical Summary
The existing electric bicycle discharge plugs have no leverage point on the elbow shell, making it difficult to pull out the plug. Some plugs use plastic brackets, which results in high cost, low structural strength, and abnormal noise during riding.
It adopts a combination structure of metal pull ring, stop block assembly and clamp assembly. The metal pull ring is restricted to a 90-degree angle with the injection-molded shell of the elbow by the stop block assembly, which makes it easy to pull out. The metal pull ring is integrally bent and formed, and mass production does not require molds. The clamp assembly limits and fixes to prevent shaking and abnormal noise.
It enables convenient plug-out operation, reduces production costs, improves structural strength, and avoids abnormal noises during riding.
Smart Images

Figure CN224947030U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electric bicycle technology, and more specifically, to a plug structure for discharging electric bicycles. Background Technology
[0002] Electric-assisted bicycles are vehicles that are based on ordinary small cars, with the addition of a motor, controller, battery, and other components. The core of these vehicles is the battery providing auxiliary power. They are a type of mechatronic transportation vehicle that uses the battery as an auxiliary energy source, and the current mainstream models are two-wheeled.
[0003] Currently, electric bicycle batteries are discharged through a matching plug. Most discharge plugs on the market are elbow-shaped to save internal installation space. However, most existing elbow plugs have no leverage point on the outer shell, making it difficult to pull out the plug. Some plugs have plastic brackets on the surface to help pull out the plug. However, since the brackets need to be injection molded, the mold cost and investment are high, and the structural strength is low. Furthermore, the plastic brackets have no fixing structure, and when the brackets are lowered, they produce abnormal noise during riding. Therefore, this utility model proposes a plug structure for discharging electric bicycles. Utility Model Content
[0004] 1. Technical problems to be solved To address the problems existing in the prior art, the purpose of this utility model is to provide a plug structure for discharging electric bicycles. The aim is to solve the problems of existing elbow plugs having no leverage point on the outer shell, making it difficult to pull out the plug when removing it. Some plugs have plastic brackets on the surface to help pull out the plug. However, since the brackets need to be injection molded, the mold cost and investment are high, and the structural strength is low. Furthermore, the plastic brackets have no fixing structure, and when the brackets are lowered, they produce abnormal noises during riding.
[0005] 2. Technical Solution To solve the above problems, the present invention adopts the following technical solution: A plug structure for discharging an electric-assisted bicycle includes a bent injection-molded housing. One end of the bent injection-molded housing is fixedly connected to a positioning member. A signal pin assembly is fixedly connected inside the positioning member and is inserted into the bent injection-molded housing. A metal pull ring is rotatably connected to the outer surface of the bent injection-molded housing. A stop assembly and a latch assembly are fixedly connected to the outer surface of the bent injection-molded housing, and the metal pull ring corresponds to the stop assembly and the latch assembly.
[0006] As a preferred embodiment of this utility model, the metal pull ring includes a pull portion and two rotating insert portions, wherein the pull portion and the two rotating insert portions are integrally bent and formed, and the two rotating insert portions are rotatably connected to the elbow injection molded shell.
[0007] As a preferred embodiment of this utility model, the outer surface of the elbow injection molded shell is provided with two symmetrical rotating grooves, and the two rotating parts are respectively inserted into the two rotating grooves.
[0008] As a preferred embodiment of this utility model, a sealing ring is fitted on the outer surface of the positioning member.
[0009] 3. Beneficial Effects Compared with existing technologies, the advantages of this utility model are: (1) In this solution, a metal pull ring is provided on the injection molded shell of the elbow. After being restricted by the stop block assembly, the metal pull ring can maintain a 90-degree angle with the injection molded shell of the elbow after rotation and be on the same straight line as the positioning part, which facilitates pulling.
[0010] (2) In this solution, the metal pull ring is formed by integral bending of metal material, which is convenient for mass production without the need for mold opening; and the metal pull ring has high tensile strength and is not easily deformed. Different appearances can also be selected through subsequent electroplating or blackening processes.
[0011] (3) In this solution, when not in use, the metal pull ring can be rotated backward to pass through the buckle assembly. The buckle assembly can limit and fix the metal pull ring to prevent it from loosening and causing abnormal noise during the riding of the electric-assisted bicycle. Attached Figure Description
[0012] Figure 1 This is the front view of the present invention; Figure 2 This is a structural diagram of the injection-molded housing of the elbow in this utility model; Figure 3 In this utility model Figure 2 Exploded view.
[0013] Explanation of the labels in the diagram: 1. Elbow injection molded housing; 11. Stop block assembly; 12. Clamping bolt assembly; 2. Positioning component; 3. Signal pin assembly; 4. Metal pull ring; 41. Pull-out part; 42. Adapter part; 5. Rotary groove; 6. Sealing ring. Detailed Implementation
[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.
[0015] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0016] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0017] Example: Please see Figure 1-3 A plug structure for discharging an electric-assisted bicycle includes a bent injection-molded housing 1. One end of the bent injection-molded housing 1 is fixedly connected to a positioning member 2. A signal pin assembly 3 is fixedly connected inside the positioning member 2 and is inserted into the bent injection-molded housing 1. A metal pull ring 4 is rotatably connected to the outer surface of the bent injection-molded housing 1. A stop assembly 11 and a latch assembly 12 are fixedly connected to the outer surface of the bent injection-molded housing 1, and the metal pull ring 4 corresponds to the stop assembly 11 and the latch assembly 12.
[0018] In this embodiment, the elbow injection-molded housing 1 is powered through the signal pin assembly 3 and the connecting wire. The positioning member 2 is used for insertion so that the power connected by the signal pin assembly 3 discharges to the electric-assisted bicycle, ensuring that the electric-assisted bicycle can be powered on and used. When the elbow injection-molded housing 1 needs to be pulled out, the user inserts his finger into the metal pull ring 4 and rotates it. The stop block assembly 11 restricts the rotation of the metal pull ring 4, keeping the metal pull ring 4 at a 90-degree angle with the elbow injection-molded housing 1, making it easy to pull the elbow injection-molded housing 1 to pull out the positioning member 2. When the positioning member 2 on the elbow injection-molded housing 1 is inserted into the electric bicycle, the metal pull ring 4 has a certain elasticity. By rotating the metal pull ring 4, the metal pull ring 4 is elastically opened when passing through the latch assembly 12. After the opened metal pull ring 4 has completely passed through the latch assembly 12, it elastically returns to its original position. The latch assembly 12 restricts the metal pull ring 4 to prevent the metal pull ring 4 from shaking and producing abnormal noise during the riding of the electric-assisted bicycle.
[0019] Specifically, the metal pull ring 4 includes a pull part 41 and two rotating parts 42. The pull part 41 and the two rotating parts 42 are integrally bent and formed, and the two rotating parts 42 are rotatably connected to the elbow injection molded shell 1.
[0020] In this embodiment, the pull-out part 41 and the two rotating parts 42 are integrally bent from metal. The pull-out part 41 is convenient for pulling, and the two rotating parts 42 can be stably inserted into the elbow injection molded shell 1 and rotated at an angle, so that the pull-out part 41 can be pulled out of the elbow injection molded shell 1 at a suitable angle.
[0021] Specifically, the outer surface of the elbow injection molded housing 1 has two symmetrical rotating grooves 5, and two rotating inserts 42 are respectively inserted into the two rotating grooves 5.
[0022] In this embodiment, the two rotating inserts 42 are elastically opened by the pull-out part 41 and inserted into the two rotating slots 5 respectively, which can achieve stable rotation on the elbow injection molded housing 1.
[0023] Specifically, a sealing ring 6 is fitted onto the outer surface of the positioning component 2.
[0024] In this embodiment, when the positioning component 2 is inserted into the electric bicycle, the sealing ring 6 can improve the sealing performance of the insertion point of the positioning component 2, preventing dust and impurities from entering and affecting the power supply effect.
[0025] Working principle: The elbow injection-molded housing 1 is connected to the electric-assisted bicycle via the positioning component 2. The signal pin assembly 3 connects the power supply to the electric-assisted bicycle. When the positioning component 2 on the elbow injection-molded housing 1 needs to be removed from the electric-assisted bicycle, the user inserts their finger into the metal pull ring 4 and rotates it. The metal pull ring 4 is elastically opened when it passes through the latch assembly 12. When the metal pull ring 4 rotates to a 90° angle with the elbow injection-molded housing 1, it is restricted by the stop assembly 11 and aligned with the insertion of the positioning component 2, thus facilitating the removal of the positioning component 2. When the positioning component 2 on the elbow injection-molded housing 1 is inserted into the electric-assisted bicycle, the metal pull ring 4 is rotated and pressed against the latch assembly 12. The metal pull ring 4 is elastically opened when it passes through the latch assembly 12. After the opened metal pull ring 4 has completely passed through the latch assembly 12, it elastically returns to its original position. The latch assembly 12 restricts the metal pull ring 4, preventing it from shaking during the riding of the electric-assisted bicycle.
[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.
Claims
1. A plug structure for discharging an electric bicycle, comprising a bent injection-molded outer shell (1), characterized in that: One end of the elbow injection molding housing (1) is fixedly connected to a positioning member (2), and a signal pin assembly (3) is fixedly connected inside the positioning member (2). The signal pin assembly (3) is inserted into the elbow injection molding housing (1). A metal pull ring (4) is rotatably connected to the outer surface of the elbow injection molding housing (1). A stop block assembly (11) and a bolt assembly (12) are fixedly connected to the outer surface of the elbow injection molding housing (1). The metal pull ring (4) corresponds to the stop block assembly (11) and the bolt assembly (12).
2. The plug structure for discharging an electric bicycle according to claim 1, characterized in that: The metal pull ring (4) includes a pull part (41) and two rotating parts (42). The pull part (41) and the two rotating parts (42) are integrally bent and formed, and the two rotating parts (42) are rotatably connected to the elbow injection molded shell (1).
3. The plug structure for discharging an electric bicycle according to claim 2, characterized in that: The outer surface of the elbow injection molding shell (1) has two symmetrical rotating grooves (5), and two rotating inserts (42) are respectively inserted into the two rotating grooves (5).
4. The plug structure for discharging an electric bicycle according to claim 3, characterized in that: A sealing ring (6) is fitted on the outer surface of the positioning component (2).
