Quick-release plug for wiper rubber strip
By designing a symmetrical end cap assembly and a limiting structure for the quick-release wiper blade end cap, the problems of difficult installation and removal and accidental detachment of existing wiper end caps are solved, achieving quick disassembly and preventing accidental opening, thus improving safety and convenience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO JINYAN TECHNOLOGY CO LTD
- Filing Date
- 2025-07-04
- Publication Date
- 2026-07-17
AI Technical Summary
Existing wiper plugs require tools to pry and remove, which is time-consuming and difficult to install and remove. In addition, 70% of quick-release plugs on the market do not have an anti-accidental opening structure, resulting in a high rate of accidental detachment and posing a safety hazard.
A quick-release wiper blade end cap was designed, comprising two symmetrical end cap assemblies. Through the combination structure of the limiting shaft, mounting cover plate and limiting plate, tool-free quick release and prevention of accidental opening are achieved. The cooperation of the limiting groove and the limiting rod ensures the stable installation of the wiper blade.
It enables quick disassembly and installation without tools, improving safety, reducing the risk of accidental detachment, and enhancing the stability and ease of use of the wiper assembly.
Smart Images

Figure CN224511079U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of quick-release plug technology, and in particular to a quick-release plug for wiper blades. Background Technology
[0002] Wiper caps (also known as wiper blade end protectors) are components in a car's wiper system. Their main function is to protect the ends of the wiper blades from external environmental influences, such as preventing dust, mud, and other impurities from entering the blades and causing wear or performance degradation. In addition, they can reduce wiper noise to some extent and help maintain the straightness and stability of the wiper blades, thereby improving wiping performance.
[0003] Wiper blade end caps are exposed to the external environment for extended periods during use. Existing snap-on end caps require tools to pry open, with an average disassembly time of >120 seconds, making disassembly and assembly difficult. Furthermore, 70% of quick-release end caps on the market lack anti-accidental opening mechanisms, resulting in an accidental detachment rate of ≥5% due to road vibrations (based on 100,000 km road test statistics), posing a safety hazard. Therefore, a quick-release end cap for wiper blade rubber strips is proposed. Utility Model Content
[0004] The main purpose of this utility model is to provide a quick-release wiper blade plug, which solves the problems of existing snap-on plugs that require tools to pry open, with an average disassembly time of >120 seconds, making disassembly and assembly difficult, and the fact that 70% of quick-release plugs on the market do not have an anti-accidental opening structure, resulting in an accidental detachment rate of ≥5% due to road vibration (statistics from 100,000 kilometers of road testing), which poses a safety hazard.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] A quick-release wiper blade plug includes two plug assemblies with identical structures and symmetrical positions. Each plug assembly includes a plug body with a movable groove on one side. A limiting shaft is fixedly connected to the plug body within the movable groove. A mounting cover is movably sleeved on the outer side of the limiting shaft, with one side of the mounting cover movably sleeved within the movable groove. A retaining groove is formed on the outer side of the plug body, with one side of the mounting cover abutting against the retaining groove. A limiting plate is fixedly connected to the inner side of the mounting cover. A second limiting groove is formed on one side of the plug body, with the limiting plate retaining itself within the second limiting groove. A movable plate is fixedly connected to the outer side of the mounting cover.
[0007] Furthermore, a pressure plate is fixedly connected to the inner side of the mounting cover, and limit rods are fixedly connected to both sides of the pressure plate. A connection hole is opened in the slot on the upper side of the plug body.
[0008] Furthermore, an installation port is provided on one side of the plug body, and two first limiting grooves are equally spaced inside the plug body.
[0009] Furthermore, a wiper assembly is installed inside the two plug assemblies. The wiper assembly includes a wiper blade body, one end of which is movably fitted into the plug body. A pressure plate abuts against the top of the wiper blade body. Wiper blade brackets are fixedly installed on both sides of the wiper blade body. The two wiper blade brackets are movably fitted into two first limiting grooves. Limiting holes are opened on the outer sides of the two wiper blade brackets, and the lower ends of the two limiting rods pass through the two limiting holes respectively.
[0010] Compared with the prior art, the present invention has the following beneficial effects:
[0011] 1. This utility model, through its specially designed mounting cover, enables quick disassembly without tools, making the use of the plug more convenient, preventing accidental opening, and enhancing safety. When the plug needs to be disassembled, the movable plate is pulled outwards, causing the mounting cover to rotate around the limiting shaft. The mounting cover then moves the limiting plate, causing it to deform and no longer be engaged in the second limiting groove. This continues until the mounting cover causes the pressure plate to no longer press against the wiper blade body, and the lower end of the limiting rod is no longer inserted into the limiting hole. At this point, the plug body can be pulled outwards along the length of the wiper assembly until the wiper blade bracket is no longer fitted into the first limiting groove. The wiper assembly then leaves the plug body from the mounting opening, completing the disassembly of the plug body. Reverse the process for installation. This design enables quick disassembly without tools, making the use of the plug more convenient, preventing accidental opening, and enhancing safety.
[0012] 2. This utility model, through the setting of the first limiting groove, enables the wiper blade bracket to be quickly inserted into the end cap assembly, achieving quick and easy installation and fixing. During installation, the wiper blade bracket is inserted into the end cap body through the installation port, and one end of the wiper blade bracket is inserted into the first limiting groove. The position of the wiper blade bracket can be quickly positioned. The wiper blade bracket can be guided to the installation position along the first limiting groove, and the first limiting groove can limit the wiper blade bracket to move only in a straight line on the end cap body. Through this setting, the wiper blade bracket can be quickly inserted into the end cap assembly, achieving quick and easy installation and fixing.
[0013] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of the plug assembly of the quick-release plug for a wiper blade according to the present invention from the first angle.
[0015] Figure 2This is a schematic diagram of the overall structure of the plug assembly of the quick-release plug for a wiper blade according to the present invention from a second angle.
[0016] Figure 3 This is a schematic diagram of the overall structure of the mounting cover plate of the quick-release wiper blade end cap assembly in the open state, according to the present invention.
[0017] Figure 4 This is a schematic diagram of the overall structure of the quick-release plug assembly for a wiper blade, as described in this utility model, installed on the wiper assembly.
[0018] Figure 5 This is an enlarged schematic diagram of a portion of the cross-section of a quick-release wiper blade end cap assembly installed on a wiper assembly, according to the present invention.
[0019] In the diagram: 1. End cap body; 2. Mounting port; 3. First limiting groove; 4. Movable groove; 5. Limiting shaft; 6. Mounting cover plate; 7. Movable plate; 8. Pressure plate; 9. Limiting rod; 10. Slot; 11. Second limiting groove; 12. Connecting hole; 13. Limiting plate; 15. Wiper blade body; 16. Wiper blade bracket; 17. Limiting hole. Detailed Implementation
[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0021] like Figures 1-5 As shown, a quick-release wiper blade plug includes two plug assemblies with identical structures and symmetrical positions. Each plug assembly includes a plug body 1. A movable groove 4 is provided on one side of the plug body 1. A limiting shaft 5 is fixedly connected to the plug body 1 within the movable groove 4. A mounting cover 6 is movably sleeved on the outer side of the limiting shaft 5. One side of the mounting cover 6 is movably sleeved within the movable groove 4. A slot 10 is provided on the outer side of the plug body 1. One side of the mounting cover 6 abuts against the slot 10. A limiting plate 13 is fixedly connected to the inner side of the mounting cover 6. A second limiting groove 11 is provided on one side of the plug body 1. The limiting plate 13 is engaged within the second limiting groove 11. A movable plate 7 is fixedly connected to the outer side of the mounting cover 6. By adopting the above technical solution, the shape of the mounting cover 6 fits snugly with the plug body 1, and the overall shape is streamlined, preventing accidental flipping from the outside.
[0022] The limiting plate 13 has a certain degree of elasticity and can recover after deformation;
[0023] The outer side of the mounting cover 6 fits the shape of the slot 10, which can reduce accidental contact;
[0024] The movable plate 7 protrudes from the mounting cover plate 6. It can be easily unlocked by moving the movable plate 7. In other positions, an external force of ≥60N is required to open it, which is far greater than the vibration and impact force when the wiper is working.
[0025] A pressure plate 8 is fixedly connected to the inner side of the cover plate 6. Limiting rods 9 are fixedly connected to both sides of the pressure plate 8. A connecting hole 12 is opened in the slot 10 on the upper side of the plug body 1. By adopting the above technical solution, the pressure plate 8 and the two limiting rods 9 all pass through the connecting hole 12.
[0026] The pressure plate 8 is made of wear-resistant, high-friction material.
[0027] An installation port 2 is provided on one side of the plug body 1, and two first limiting grooves 3 are provided at equal intervals inside the plug body 1. By adopting the above technical solution, the interior of the plug body 1 is hollow, and the bottom of the plug body 1 is open.
[0028] The inner side of the first limiting groove 3 is fixedly connected with a wear-resistant, high-friction material.
[0029] Wiper assemblies are installed inside the two end cap assemblies. The wiper assembly includes a wiper blade body 15. One end of the wiper blade body 15 is movably sleeved in the end cap body 1. The upper part of the wiper blade body 15 abuts against the pressure plate 8. Wiper blade brackets 16 are fixedly installed on both sides of the wiper blade body 15. The two wiper blade brackets 16 are movably sleeved in the two first limiting grooves 3 respectively. Limiting holes 17 are opened on the outer side of the two wiper blade brackets 16 respectively. The lower ends of the two limiting rods 9 pass through the two limiting holes 17 respectively. By adopting the above technical solution, the lower part of the pressure plate 8 abuts against the wiper blade body 15, which can prevent the wiper blade body 15 from moving.
[0030] Both ends of the wiper assembly are equipped with end caps, which can effectively seal both ends of the wiper assembly.
[0031] The lower end of the wiper blade body 15 can extend from the lower end of the plug body 1.
[0032] It should be noted that when the plug needs to be removed, the movable plate 7 is pulled outward. The movable plate 7 drives the mounting cover plate 6 to move. The mounting cover plate 6 rotates around the limiting shaft 5 as the axis. The mounting cover plate 6 drives the limiting plate 13 to move. The limiting plate 13 deforms and is no longer stuck in the second limiting groove 11. Until the mounting cover plate 6 drives the pressure plate 8 to no longer abut against the wiper blade body 15, and the lower end of the limiting rod 9 is no longer inserted into the limiting hole 17, the plug body 1 can be pulled outward along the length of the wiper assembly until the wiper blade bracket 16 is no longer sleeved in the first limiting groove 3. The wiper assembly leaves the plug body 1 from the mounting port 2. At this time, the removal of the plug body 1 is completed. The reverse operation can be used for installation.
[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A quick-release plug for a wiper blade, comprising two plug components, characterized in that The two plug components are symmetrically positioned with the same structure. Each plug component includes a plug body (1). A movable groove (4) is provided on one side of the plug body (1). A limiting shaft (5) is fixedly connected to the plug body (1) in the movable groove (4). An installation cover plate (6) is movably sleeved on the outside of the limiting shaft (5). One side of the installation cover plate (6) is movably sleeved in the movable groove (4). A slot (10) is provided on the outside of the plug body (1). One side of the installation cover plate (6) abuts in the slot (10). A limiting plate (13) is fixedly connected to the inside of the installation cover plate (6). A second limiting groove (11) is provided on one side of the plug body (1). The limiting plate (13) is engaged in the second limiting groove (11). A movable plate (7) is fixedly connected to the outside of the installation cover plate (6).
2. The quick-release plug of claim 1, wherein: A pressure plate (8) is fixedly connected to the inner side of the mounting cover plate (6), and a limit rod (9) is fixedly connected to both sides of the pressure plate (8). A connection hole (12) is opened in the slot (10) on the upper side of the plug body (1).
3. The quick release plug of claim 2, wherein: The plug body (1) has an installation port (2) on one side, and two first limiting grooves (3) are equally spaced inside the plug body (1).
4. The quick release plug of claim 3, wherein: Wiper assemblies are installed inside the two plug assemblies. The wiper assembly includes a wiper blade body (15). One end of the wiper blade body (15) is movably sleeved in the plug body (1). The upper part of the wiper blade body (15) abuts against the pressure plate (8). Wiper blade brackets (16) are fixedly installed on both sides of the wiper blade body (15). The two wiper blade brackets (16) are movably sleeved in the two first limiting grooves (3). Limiting holes (17) are opened on the outer side of the two wiper blade brackets (16). The lower ends of the two limiting rods (9) pass through the two limiting holes (17).