Frameless car door window tinting auxiliary tools
By designing a window tinting aid for frameless car doors, the problem of the window glass not being able to stay raised was solved, achieving stable support for the car door, improving the efficiency and quality of tinting, and protecting vehicle components.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FOSHAN QILI TECH CO LTD
- Filing Date
- 2025-04-23
- Publication Date
- 2026-05-26
Smart Images

Figure CN224276199U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of car door tinting tools, specifically, to an auxiliary tool for tinting car window glass for frameless car doors. Background Technology
[0002] With the development of the automotive industry and the increasing demand from consumers for personalized vehicles, car window tinting has become a widely used method for car beautification and protection. Car window tinting not only enhances the vehicle's appearance but also effectively blocks ultraviolet rays, reduces interior heat, and improves the shatterproof performance of the glass. However, for frameless car door models, the window tinting process faces certain technical challenges.
[0003] Compared to framed car doors, frameless doors have a more stylish appearance, with smaller gaps between the door and the body, resulting in a more integrated and premium look. When the door opens, the window automatically lowers a certain distance, a feature preset by the vehicle's intelligent control system. This ensures an appropriate gap between the window and the door frame when the door is open, preventing direct impact damage when the door is closed. However, this automatic window lowering design presents a challenge during window tinting. Tinting requires the door to be open and the window fully raised to allow the tinter to apply the film evenly and comprehensively, while simultaneously observing and adjusting the application to ensure no air bubbles or wrinkles between the film and the glass.
[0004] There is a lack of specially designed auxiliary tools on the market to address the issue of window glass not being able to remain rolled up when applying window film to frameless car doors. Traditional window film application methods often require the installer to close the car door, but the confined space inside the car makes it difficult for people to observe and move around. These methods are not only cumbersome and inefficient, but also make it difficult to guarantee the quality and effect of the film application. Summary of the Invention
[0005] The purpose of this utility model is to provide an auxiliary tool for applying window film to frameless car doors, in order to solve the problem mentioned in the background art that the window glass cannot be kept in the raised state when applying film to frameless car door models, and the lack of a specially designed auxiliary tool on the market.
[0006] To achieve the above objectives, this utility model provides an auxiliary tool for applying window film to frameless car doors, including a main rod, one end of which is provided with a locking rod, the locking rod and the main rod intersecting at one end, and the locking rod engaging with the locking slot of the car door.
[0007] The other end of the main rod is provided with a latch, which engages with the latch below the B-pillar of the car.
[0008] The main rod supports the car door through the locking rod and the latch, thereby keeping the car door in a stable open state.
[0009] Preferably, the number of the bayonet slots is 1-3, the shape is a semi-circular arc structure, and they are arranged at equal intervals. The inner wall of the bayonet slot is bonded with a pad made of silicone material.
[0010] Preferably, one side of the main rod is provided with a raised arc surface, which intersects with one end of the locking rod and forms a notch.
[0011] Preferably, the other side of the main rod is provided with a groove.
[0012] Preferably, the main rod is 220mm-260mm long; the latch is engaged with the buckle; the main rod forms an angle α of 2-7° with the tangent of the arc surface, and the tangent is perpendicular to the locking rod.
[0013] Preferably, the locking rod is a cylindrical structure, including a shell, an inner cavity inside the shell, a threaded rod installed inside the inner cavity, a movable block installed on the threaded rod, a top block on one side of the movable block, an opening on the outer wall of the shell, and the top block slidingly engaging with the opening.
[0014] Preferably, the side of the moving block closest to the top block is an inclined surface, and the side of the top block closest to the moving block is also an inclined surface, with the moving block and the top block sliding together via the inclined surfaces.
[0015] Preferably, the movable block has a threaded opening in the middle, and the threaded rod is threadedly connected to the threaded opening. The rotation of the threaded rod drives the movable block to move linearly, thereby pushing the top block outward from the opening, improving the tightness of the fit between the locking rod and the door lock.
[0016] Preferably, the outer wall of the top block has an arc-shaped protrusion structure, and the top block is made of silicone material.
[0017] Preferably, a knob is installed at one end of the threaded rod, and a flat-mouth interface is provided on the outside of the knob for cooperating with a flat-mouth screwdriver.
[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0019] This window tinting tool for frameless car doors features a locking lever at one end that engages with the door's locking mechanism, and a latch at the other end that engages with the latch below the B-pillar. This locking action secures the door in the open position, allowing the window to remain fully raised and meeting the requirements for tinting. Compared to traditional, unprofessional methods like using wooden blocks or tape, this tool provides a stable and reliable working environment, preventing door or window movement from affecting the tinting quality.
[0020] The use of specialized auxiliary tools replaces the traditional, cumbersome temporary fixing methods. Film applicators no longer need to spend a lot of time trying various temporary fixing methods. They can directly and quickly install the auxiliary tools to put the car door in the right position for film application, which greatly shortens the preparation time for film application and improves the overall efficiency of the film application work.
[0021] Stable door support allows installers to apply the film to the glass surface more easily and evenly, effectively avoiding problems such as bubbles and wrinkles between the film and glass caused by unstable door surfaces. This ensures a smooth and aesthetically pleasing application, improves the quality of the film application, and ultimately increases customer satisfaction.
[0022] The inner wall of the latch is bonded with a silicone pad, and the top block of the locking lever is made of silicone material with an arc-shaped raised structure. These designs can effectively avoid hard damage to the door, latch and glass when they are used with the car door and latch, and prevent scratches and wear. While ensuring the smooth progress of the film application, it protects the original parts of the vehicle from damage. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0024] Figure 2 This is a side view of the structure of this utility model;
[0025] Figure 3 This is a schematic diagram of the locking rod in this utility model;
[0026] The meanings of the labels in the diagram are as follows:
[0027] 1. Main rod; 11. Arc surface; 12. Notch; 13. Groove; 2. Locking rod; 21. Outer shell; 211. Inner cavity; 212. Opening; 22. Knob; 23. Threaded rod; 24. Moving block; 25. Top block; 26. Guide rod; 3. Bayonet; 31. Pad layer; 4. Locking buckle. Detailed Implementation
[0028] 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.
[0029] This utility model provides an auxiliary tool for applying window film to frameless car doors, such as... Figures 1-3 As shown, it includes a main rod 1, and a locking rod 2 is provided at one end of the main rod 1. The locking rod 2 and the main rod 1 intersect at one end. The locking rod 2 engages with the locking port of the car door. The locking rod 2 triggers the intelligent control system of the car door so that the car window glass can be fully raised when the car door is open.
[0030] The other end of the main rod 1 is provided with a latch 3, which engages with the latch 4 below the B-pillar of the car.
[0031] The main rod 1 supports the car door through the locking rod 2 and the latch 3, thereby allowing the car window to be fully raised and the car door to be in a stable open state.
[0032] One end of the main rod 1 has a locking rod 2 that engages with the door locking port, and the other end has a locking port 3 that engages with the latch 4 below the B-pillar of the car. The two ends engage to form a stable triangular support structure, which firmly supports the car door in the open position, allowing the car window glass to be fully raised. This provides a stable operating platform for the film application work and completely solves the problem of the glass not being able to be fixed when applying film to the window glass of frameless car doors.
[0033] In this embodiment, the number of bayonet slots 3 is 1-3, the shape is a semi-circular arc structure, and they are arranged at equal intervals. The inner wall of the bayonet slot 3 is bonded with a pad layer 31 made of silicone material.
[0034] One to three semi-circular, equally spaced latches 3 can be adapted to different positions and sizes of the latches 4 below the B-pillar of different car models, significantly improving the versatility of the auxiliary tool. The silicone pad 31 bonded to the inner wall of the latches 3 increases the friction between the latches 3 and the latches 4, preventing slippage during engagement and ensuring support stability. On the other hand, it can effectively prevent scratches, wear and other damage to the surface of the latches 4 during engagement, protecting vehicle components.
[0035] Specifically, one side of the main rod 1 is provided with a raised arc surface 11, so that when the main rod 1 follows the door to close the door in a fan shape, the other end of the main rod 1, the latch 3, will not hit the paint below the B-pillar of the car; in addition, the arc surface 11 intersects with one end of the locking rod 2 to form a notch 12, which makes it easy for the door lock tongue to fully engage with the locking rod. The notch 12 provides clearance space, and the arc surface 11 presses down on the lock tongue, so that the main rod 1 will not wobble and will be integrated with the door as a whole.
[0036] The arc surface 11 on one side of the main rod 1 intersects with the locking rod 2 to form a notch 12. This structural design optimizes the connection between the main rod 1 and the locking rod 2, making the connection between the two more stable. When supporting the car door, it can better distribute the force and enhance the strength of the overall structure. The groove 13 on the other side reduces the weight of the tool, saves materials, and reduces manufacturing costs.
[0037] Furthermore, the main rod 1 is characterized by a length of 220mm-260mm; the latch 3 is engaged with the buckle 4, and the angle α formed between the main rod 1 and the tangent of the arc surface 11 is 2-7°, and the tangent is perpendicular to the locking rod 2.
[0038] The length of the main rod 1 is set at 220mm-260mm, which meets the ergonomic and frameless car door window tinting operation space requirements. It can effectively support the car door and is easy for the operator to hold and operate. The main rod 1 forms an angle α of 2-7° with the tangent of the arc surface 11 and the tangent is perpendicular to the locking rod 2. This precise angle design allows the auxiliary tool to form the best mechanical balance with the car door and the latch 4 when it is engaged, ensuring the stability of the car door support, while improving the accuracy and convenience of installation.
[0039] Furthermore, the locking rod 2 is a cylindrical structure, including a housing 21. The housing 21 has an inner cavity 211, inside which a threaded rod 23 is installed. A movable block 24 is mounted on the threaded rod 23, and a top block 25 is provided on one side of the movable block 24. An opening 212 is provided on the outer wall of the housing 21, and the top block 25 slides into the opening 212. A guide rod 26 is provided through the movable block 24, with both ends of the guide rod 26 mounted on the inner wall of the inner cavity 211, guiding the linear movement of the movable block 24.
[0040] The locking lever 2 has an internal adjustment structure consisting of a housing 21, an inner cavity 211, a threaded rod 23, a moving block 24, and a top block 25. An opening 212 is provided on the outer wall of the housing 21, and the top block 25 slides within the opening 212. Rotating the knob 22 rotates the threaded rod 23, causing the moving block 24 to move linearly and push the top block 25 outward from the opening 212. This allows for flexible adjustment of the fit between the locking lever 2 and the door lock according to the actual shape and size of the door's locking opening, thus adapting to different vehicle door locking openings, enhancing the tool's applicability, and further improving support stability.
[0041] Furthermore, the side of the moving block 24 closest to the top block 25 is an inclined plane, and the side of the top block 25 closest to the moving block 24 is also an inclined plane. The moving block 24 and the top block 25 slide together through the inclined planes.
[0042] The side of the movable block 24 closest to the top block 25 is an inclined surface, and the side of the top block 25 closest to the movable block 24 is also an inclined surface. The two slide together on the inclined surfaces, which efficiently converts the rotational motion of the threaded rod 23 into the linear ejection motion of the top block 25. This makes the ejection process of the top block 25 smoother and more stable, and can provide a larger ejection force, ensuring that the locking rod 2 and the door lock fit tightly together, thus ensuring the door support effect.
[0043] Furthermore, the moving block 24 has a threaded opening in the middle, and the threaded rod 23 is threadedly connected to the threaded opening. The rotation of the threaded rod 23 drives the moving block 24 to move linearly, thereby pushing the top block 25 outward from the opening 212, improving the tightness of the fit between the locking rod and the door lock.
[0044] The movable block 24 is provided with a threaded opening in the middle, and the threaded rod 23 is threadedly connected to the threaded opening. Through precise thread transmission, the movable block 24 can move in a precise linear direction, thereby accurately controlling the ejection distance of the top block 25. The tightness of the fit between the locking rod 2 and the door lock can be accurately adjusted according to actual needs, ensuring the reliability of the door support under different working conditions.
[0045] Furthermore, the outer wall of the top block 25 is an arc-shaped protrusion structure, and the top block 25 is made of silicone material.
[0046] The outer wall of the top block 25 has an arc-shaped protrusion structure, which makes it fit more closely with the door locking opening, increases the contact area, and improves the stability of the locking. It is made of silicone material, which is soft in texture. When locking with the door locking opening, it can effectively prevent damage to the door surface and increase friction to ensure that the locking rod 2 fits tightly with the door.
[0047] Furthermore, a knob 22 is installed at one end of the threaded rod 23, and a flat-head interface is provided on the outside of the knob 22 for use with a flat-head screwdriver.
[0048] The knob 22 installed at one end of the threaded rod 23 has a flat-head interface on its outer side, which is convenient to operate with a common flat-head screwdriver. No additional special tools are required, which lowers the threshold of use and allows operators to easily and quickly adjust the tightness of the fit between the locking rod 2 and the door lock, improving the convenience of tool use and operating efficiency.
[0049] When using the frameless car door window tinting auxiliary tool of this utility model, the operator first locates the latch 4 below the B-pillar of the car according to the car model, selects 1-3 semi-circular slots 3 at appropriate positions, and engages the slots 3 with the latch 4. Due to the silicone pad 31 on the inner wall of the slot 3, the friction is increased during engagement to prevent slippage, while protecting the surface of the latch 4 from scratches.
[0050] Align the locking rod 2 at the other end of the main rod 1 with the locking slot of the car door. Utilize the connection structure between the arc surface 11 and the recess 12 of the main rod 1 and the locking rod 2 to ensure a secure connection between the locking rod 2 and the main rod 1. The main rod 1 is 220mm-260mm long, ergonomically designed for easy hand operation. The main rod 1 forms a 2-7° angle with the tangent of the arc surface 11, and the tangent is perpendicular to the locking rod 2. This angle allows the auxiliary tool to achieve optimal mechanical balance with the car door and the latch 4, completing the initial positioning.
[0051] Using a flathead screwdriver engaged with the flathead interface on the outside of knob 22, rotating knob 22 causes threaded rod 23 to rotate. Since threaded rod 23 is threadedly connected to the threaded opening in the middle of moving block 24, the rotation of threaded rod 23 is converted into linear movement of moving block 24. The side of moving block 24 near top block 25 is inclined, and the side of top block 25 near moving block 24 is also inclined. The linear movement of moving block 24 pushes top block 25 outward from the opening 212 on the outer wall of housing 21. The arc-shaped protrusion structure on the outer wall of top block 25 fits against the door locking opening. By adjusting the pushing distance of top block 25, the tightness of the fit between locking rod 2 and door locking opening can be precisely controlled, adapting to different door locking openings.
[0052] After the above operations, the auxiliary tool, through the locking mechanisms at both ends and the internal adjustment mechanism, firmly supports the car door in the open position, allowing the window glass to be fully raised, providing a stable operating platform for the window tinting personnel. The tinting personnel can then perform the tinting work in this state. After completion, rotate knob 22 in the opposite direction to retract the top block 25, releasing the tight engagement between the locking lever 2 and the door locking slot. Then, remove the latch 3 from the latch 4 to disassemble the auxiliary tool.
[0053] 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 preferred examples and are not intended to limit the 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 claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. An auxiliary tool for applying window film to frameless car doors, comprising a main rod (1), characterized in that: A locking rod (2) is provided at one end of the main rod (1). The locking rod (2) and the main rod (1) intersect at one end. The locking rod (2) engages with the locking port of the car door. The other end of the main rod (1) is provided with a bayonet (3), which engages with the latch (4) below the B-pillar of the car. The main rod (1) supports the car door through the locking rod (2) and the latch (3), thereby making the car door in a stable open state.
2. The auxiliary tool for applying window film to frameless car doors according to claim 1, characterized in that: The number of the checkpoints (3) is 1-3.
3. The auxiliary tool for applying window film to frameless car doors according to claim 1, characterized in that: The main rod (1) has a raised arc surface (11) on one side, which intersects with one end of the locking rod (2) and forms a notch (12).
4. The auxiliary tool for applying window film to frameless car doors according to claim 3, characterized in that: The length of the main rod (1) is 220mm-260mm; the buckle (3) is engaged with the latch (4); the angle between the main rod (1) and the tangent of the arc surface (11) is 2-7°, and the tangent is perpendicular to the locking rod (2).
5. The auxiliary tool for applying window film to frameless car doors according to any one of claims 1 to 4, characterized in that: The other side of the main rod (1) is provided with a groove (13).