Automobile glass lifting bottom anti-impact mechanism
Patent Information
- Application Number
- CN202522363139.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-07
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-11-07
AI Technical Summary
Crossarm window regulators lack a cushioning mechanism during descent, making the glass susceptible to damage, especially in the event of a drive failure.
An impact-resistant mechanism for the bottom of a car window lift was designed. It adopts a buffer protection rope and a winding roller structure, and uses an elastic shaft to store elastic potential energy to prevent the glass from falling when the drive fails. The buffer protection is achieved through a mechanical drive.
It effectively prevents glass from falling and being damaged under its own weight, ensuring the stability and safety of glass lifting, and even providing cushioning protection during power outages.
Smart Images

Figure CN224931539U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive parts, specifically an anti-impact mechanism for the bottom of a car window lift. Background Technology
[0002] Currently, the crossarm type window regulator is one of the most commonly used window regulators in automobiles. It includes an active arm, a driven arm, a moving guide rail, a fixed guide rail, an arc-shaped toothed plate, gears meshing with the arc-shaped toothed plate, and a base plate. The drive gear drives the arc-shaped toothed plate and the active arm to rotate. The active arm and the driven arm are connected in an X-shape. One end of the driven arm is connected to the fixed guide rail, and the other end, together with the active arm, is connected to the moving guide rail. The active arm drives the moving guide rail to move up and down by switching between the fixed guide rail and the driven arm. The window glass is installed on the moving guide rail, and the rotation of the drive gear makes the window glass rise or fall to the desired position. The advantages of the crossarm type window regulator are that it provides a wide support area for the glass, good stability during the glass rising and falling, and the installation of a balance spring can greatly reduce the contact stress on the sliding mating surface of the regulator, improving the user comfort and lifespan of the window regulator.
[0003] However, current crossarm type lifting windows lack bottom cushioning during descent, making them prone to impact damage when the crossarm malfunctions and the entire glass descends. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides an anti-impact mechanism for the bottom of automotive window lifts, solving the problems mentioned in the background.
[0005] This utility model provides the following technical solution: a bottom anti-impact mechanism for lifting automotive windows, including automotive windows and a lifting mechanism. Guide rails are provided on both sides of the lifting mechanism. Movable ear plates are installed on the upper outer side of the guide rails. An inner guide groove is provided on the inner side wall of the guide rails. A winding roller is provided on the inner side of the movable ear plate. An elastic rotating shaft is installed between the winding roller and the movable ear plate. A buffer protective suspension rope is installed inside the winding roller.
[0006] As a further embodiment of this utility model: the lifting mechanism includes: a glass mounting frame and a lower guide plate, a scissor swing arm is connected between the glass mounting frame and the lower guide plate, and a swing toothed rod is installed inside the glass mounting frame on the side away from the scissor swing arm.
[0007] As a further improvement of this utility model: a lifting gear is connected to one side of the lower end of the swing rack.
[0008] As a further improvement of this utility model, the winding roller is movably connected to the movable ear plate via the elastic rotating shaft.
[0009] As a further improvement of this utility model: the movable ear plate is fixedly connected to the guide rail, and the automotive glass is slidably connected to the inner guide groove.
[0010] As a further embodiment of this utility model: the glass mounting bracket is fixedly connected to the buffer protective suspension rope, and the swing gear is rotatably connected to the scissor swing arm.
[0011] As a further improvement of this utility model, the glass mounting bracket and the lower guide plate are both provided with guide grooves for the swinging toothed rod and the scissor swing rod to engage, limit, and slide.
[0012] As a further improvement of this utility model: the lifting gear is meshed and movably connected with the swing rack, and the lifting gear is connected to a drive motor through a rotating shaft.
[0013] Compared with the prior art, the beneficial effects of this utility model are: When the buffer safety rope is stretched, the winding roller will rotate inside the movable ear plate, deforming the entire elastic shaft to store elastic potential energy, thus achieving the purpose of buffering. Even if the internal electric drive fails or the power is cut off, the buffer safety rope can prevent the entire car glass from falling and being damaged under its own weight.
[0014] The buffer protective rope is mechanically driven. If the motor cannot provide driving force during use, the winding roller can continue to provide protective support. Attached Figure Description
[0015] Figure 1 This is a structural schematic diagram of an anti-impact mechanism for the bottom of a car window lift; Figure 2 This is a schematic diagram of the lifting mechanism in a bottom impact-resistant mechanism for automotive window lifts. Figure 3 A schematic diagram of the guide rail in a bottom impact-resistant mechanism for automotive window lifters; Figure 4 This is a front view of the entire device in a bottom anti-impact mechanism for automotive window lifts; Figure 5 This is a rear view of the entire device in a bottom anti-impact mechanism for automotive window lifts.
[0016] In the diagram: 1. Automotive glass; 2. Lifting mechanism; 3. Guide rail; 201. Glass mounting bracket; 202. Lower guide plate; 203. Swing rack; 204. Scissor swing arm; 205. Lifting gear; 301. Inner guide groove; 302. Movable ear plate; 303. Rewinding roller; 304. Buffer and protective suspension rope; 305. Elastic rotating shaft. Detailed Implementation
[0017] 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.
[0018] like Figure 1-5 As shown, this embodiment provides an anti-impact mechanism for the bottom of a car window lift, including a car window 1 and a lifting mechanism 2. Guide rails 3 are provided on both sides of the lifting mechanism 2. Movable ear plates 302 are installed on the outer upper end of the guide rails 3. The movable ear plates 302 are fixedly connected to the guide rails 3. An inner guide groove 301 is provided on the inner side wall of the guide rails 3. The car window 1 is slidably connected to the inner guide groove 301. A winding roller 303 is provided on the inner side of the movable ear plate 302. An elastic rotating shaft 305 is installed between the winding roller 303 and the movable ear plate 302. The winding roller 303 is movably connected to the movable ear plate 302 through the elastic rotating shaft 305. A buffer protective rope 304 is installed inside the winding roller 303. The buffer protective rope 304 is made of a flexible component with strong toughness. A stop bar is provided on the outer end of the movable ear plate 302 to limit the buffer protective rope 304. It can limit the buffer protective rope 304 when it is wound or stretched.
[0019] like Figure 2-3 As shown, in this embodiment, the lifting mechanism 2 includes: a glass mounting frame 201 and a lower guide plate 202. The glass mounting frame 201 is fixedly connected to the buffer protective suspension rope 304. A scissor swing arm 204 is connected between the glass mounting frame 201 and the lower guide plate 202. A swing gear 203 is installed inside the glass mounting frame 201 on the side away from the scissor swing arm 204. The swing gear 203 is rotatably connected to the scissor swing arm 204. Swing gears are provided inside both the glass mounting frame 201 and the lower guide plate 202. The guide groove for the engagement and limiting sliding of the lever 203 and the scissor lever 204 is connected to the lower end of the swing lever 203. A lifting gear 205 is connected to one side of the lower end of the swing lever 203. The fan-shaped toothed plate at the end of the swing lever 203 corresponds to the outer position of the lifting gear 205. When the car glass 1 rises and falls to the maximum range of motion, neither the swing lever 203 nor the lifting gear 205 will disengage. The lifting gear 205 is engaged and movably connected to the swing lever 203. The lifting gear 205 is connected to the drive motor through a rotating shaft.
[0020] The working principle of this utility model is as follows: During assembly, the glass mounting bracket 201 has slots for the overall fixed installation of the car glass 1, and the lifting mechanism 2 is positioned on the inner side of the car door. Simultaneously, two guide rails 3 align the inner guide groove 301 with the two ends of the car glass 1. One end of the buffer protective suspension rope 304 is fixedly installed below both ends of the glass mounting bracket 201. When controlling the overall lifting of the car glass 1, the drive motor drives the lifting gear 205 to rotate. The lifting gear 205 meshes with the swing gear 203, thereby controlling the swing gear 203 and the scissor swing arm 204 to rotate crosswise. The swing gear 203 and the scissor swing arm 204 simultaneously rotate on the glass... The guide groove inside the glass mounting bracket 201 is designed for limiting sliding, thus enabling the glass mounting bracket 201 to be guided and lifted within the inner guide groove 301 inside the guide rail 3. When the car glass 1 moves to the lower end of the inner guide groove 301, the glass mounting bracket 201 will stretch the buffer protective rope 304 wound on the winding roller 303. When the buffer protective rope 304 is stretched, the winding roller 303 will rotate inside the movable ear plate 302, deforming the elastic shaft 305 to store elastic potential energy, thus achieving the purpose of buffering. Even if the internal electric drive fails or the power is cut off, the buffer protective rope 304 can prevent the car glass 1 from falling and being damaged under its own weight.
[0021] 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 entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, 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.
[0022] 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 anti-impact mechanism for the bottom of a car window lift, comprising a car window (1) and a lifting mechanism (2), characterized in that, The lifting mechanism (2) is provided with guide rails (3) on both sides. A movable ear plate (302) is installed on the outer side of the upper end of the guide rail (3). An inner guide groove (301) is opened on the inner side wall of the guide rail (3). A winding roller (303) is provided on the inner side of the movable ear plate (302). An elastic rotating shaft (305) is installed between the winding roller (303) and the movable ear plate (302). A buffer protective suspension rope (304) is installed inside the winding roller (303).
2. The impact-resistant mechanism for the bottom of a car window lift according to claim 1, characterized in that, The lifting mechanism (2) includes: a glass mounting bracket (201) and a lower guide plate (202). A scissor bar (204) is connected between the glass mounting bracket (201) and the lower guide plate (202). A swing rack (203) is installed inside the glass mounting bracket (201) on the side away from the scissor bar (204).
3. The impact-resistant mechanism for the bottom of an automotive window lift according to claim 2, characterized in that, The lower end of the swing rack (203) is connected to a lifting gear (205).
4. The impact-resistant mechanism for the bottom of an automotive window lift according to claim 1, characterized in that, The winding roller (303) is movably connected to the movable ear plate (302) via the elastic rotating shaft (305).
5. The impact-resistant mechanism for the bottom of an automotive window lift according to claim 1, characterized in that, The movable ear plate (302) is fixedly connected to the guide rail (3), and the automotive glass (1) is slidably connected to the inner guide groove (301).
6. The impact-resistant mechanism for the bottom of an automotive window lift according to claim 2, characterized in that, The glass mounting bracket (201) is fixedly connected to the buffer protective suspension rope (304), and the swing gear (203) is rotatably connected to the scissor swing arm (204).
7. The impact-resistant mechanism for the bottom of an automotive window lift according to claim 2, characterized in that, The glass mounting bracket (201) and the lower guide plate (202) are both provided with guide grooves for the swing rack (203) and the scissor swing rod (204) to engage and slide in a limited manner.
8. The impact-resistant mechanism for the bottom of an automotive window lift according to claim 3, characterized in that, The lifting gear (205) is meshed and movably connected with the swing rack (203), and the lifting gear (205) is connected to a drive motor through a rotating shaft.
