Lift rail assembly
By adding metal reinforcements to the pulley mounting positions of the lifting guide rail, the problem of insufficient strength of the plastic guide rail was solved, resulting in a more balanced stress distribution and improved structural stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI SIIC TRANSPORTATION ELECTRIC
- Filing Date
- 2025-04-11
- Publication Date
- 2026-06-12
Smart Images
Figure CN224351791U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of window regulator technology, and further to a window regulator guide assembly. Background Technology
[0002] With the increasing demand for lightweighting and cost control in automobiles, rope-wheel type plastic guide rail lifters have become a common solution for automotive window lifting systems due to their lightweight structure and low manufacturing cost. This lifter uses a pulley assembly and steel cable to raise and lower the window, with the pulley mounting area needing to withstand the cyclic load transmitted by the steel cable.
[0003] In the existing technology, the guide rail body is made of plastic, which meets the requirements of lightweighting, but the local strength of the pulley installation part is insufficient. Under long-term load, it is prone to deformation, which leads to pulley positioning deviation and increased running resistance, affecting the service life and reliability of the lifting device. Utility Model Content
[0004] To address the aforementioned technical problems, the purpose of this application is to provide a lifting guide rail assembly that can improve the local strength of the guide rail at the pulley mounting position, thereby ensuring the lifespan and stability of the guide rail.
[0005] To achieve the above objectives, this application provides a lifting guide rail assembly for a window regulator, comprising:
[0006] The guide rail body has a first side and a second side that are opposite to each other, and a mounting position is provided on the first side of the guide rail body;
[0007] A pulley and a fixing component, wherein the pulley is rotatably connected to the mounting position via the fixing component;
[0008] A reinforcing member, which is made of metal, includes an abutting portion and a connecting portion;
[0009] The reinforcing member is connected to the second side of the guide rail body and is provided corresponding to the mounting position. The connecting part and the guide rail body are connected relative to each other, and at least a portion of the abutting part and the second side of the guide rail body form a surface-to-surface abutment to help strengthen the local strength of the guide rail body.
[0010] In some embodiments, the reinforcing member has at least two connecting portions, one end of which is connected to the outer edge of the abutting portion, and the other end of which extends in a predetermined direction to form a cantilever structure.
[0011] In some embodiments, the connecting portion includes a first connecting portion and a second connecting portion;
[0012] The first connecting portion and the second connecting portion are respectively connected to the abutting portion at a preset angle and are respectively located at two ends of the abutting portion in the length direction of the abutting portion, so that the reinforcing member forms a U-shaped profile.
[0013] In some embodiments, the guide rail body is provided with a first docking end, the first docking end penetrates or partially penetrates the guide rail body in the thickness direction, the first docking end and the first connecting portion are adapted to each other, and the first connecting portion and the first docking end are connected by clamping.
[0014] The guide rail body is further provided with a second docking end, the second docking end penetrates or partially penetrates the guide rail body in the thickness direction, the second docking end and the second connecting portion are adapted to each other, and the second connecting portion and the second docking end are connected by clamping.
[0015] In some embodiments, the first connecting portion has a plate-like structure, and the first docking end is provided as a first through groove that penetrates the guide rail body in the thickness direction, so that when the first connecting portion is clamped to the first through groove, the mating end faces of the first connecting portion and the first docking end are flat end faces.
[0016] In some embodiments, the second connecting portion includes a base portion and at least two connecting segments bent relative to the base portion. One end of the base portion and the connecting segments are both connected to the abutting portion. The base portion is disposed between the connecting segments and is connected to form an integral body. The connecting segments form a certain angle with the base portion, so that the second connecting portion can be recessed toward the center of the reinforcing member or protruded away from the center of the reinforcing member.
[0017] In some embodiments, the second connecting portion includes one base portion and two connecting segments. The two connecting segments are respectively connected to both sides of the base portion, and the angles between the two connecting segments and the base portion are equal, so that the second connecting portion is in an axisymmetric state.
[0018] In some embodiments, the fixing member includes a limiting segment and a bearing segment connected to each other. The pulley is sleeved on the outer periphery of the bearing segment and can rotate around the bearing segment under the action of an external force. The limiting segment is disposed at one end of the bearing segment. When the pulley is docked to the installation position, the limiting segment abuts against one side of the pulley to axially limit the pulley.
[0019] In some embodiments, the bearing segment includes a first shaft segment and a second shaft segment connected to each other. The first shaft segment is located between the limiting segment and the second shaft segment, and the radial dimension of the first shaft segment is larger than the radial dimension of the second shaft segment to form a stepped shaft pin structure with a decreasing dimension.
[0020] The first shaft segment is fitted into the mounting hole of the pulley for connecting with the pulley; the guide rail body is provided with a through hole, and the second shaft segment is fitted into the through hole;
[0021] A connecting structure is provided at the end of the second shaft segment away from the first shaft segment. The connecting structure is pressed to the side of the reinforcing member away from the guide rail body by riveting, so that the fixing component and the reinforcing member are relatively fixed.
[0022] In some embodiments, the pulley is provided with an annular positioning groove on its outer periphery, the positioning groove being used to engage the steel wire rope inside the glass lifter and to limit the movement of the steel wire rope;
[0023] And / or, the guide rail body is provided with an adapter groove on the second side, and when the reinforcing member is fixed to the guide rail body, at least part of the abutting portion abuts against the bottom wall of the adapter groove.
[0024] Compared with the prior art, the lifting guide rail assembly provided in this application has at least the following beneficial effects:
[0025] A metal reinforcing member connects to the guide rail body from the second side (opposite to the first side where the pulley is located), and is positioned corresponding to the pulley mounting location. This allows the tensile and shear forces transmitted by the wire rope through the pulley to be evenly distributed to the reinforcing member through the guide rail body, resulting in a more balanced stress distribution near the pulley mounting location, reducing the risk of local deformation, and improving the local strength of the guide rail body to a certain extent. The abutting part of the reinforcing member forms a large surface-to-surface abutment with the second side of the guide rail body (not point contact or line contact), significantly increasing the contact area and improving the connection stiffness and load transfer efficiency. Attached Figure Description
[0026] The preferred embodiments will now be described in a clear and easy-to-understand manner, in conjunction with the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages, and implementation methods of this application.
[0027] Figure 1 This is an exploded view of the lifting guide rail assembly in one embodiment of this application from a first perspective;
[0028] Figure 2 This is an exploded view of the lifting guide rail assembly in one embodiment of this application from a second perspective;
[0029] Figure 3 This is a schematic diagram of the overall structure of the lifting guide rail assembly in one embodiment of this application;
[0030] Figure 4 This is a partial structural schematic diagram of the lifting guide rail assembly in one embodiment of this application;
[0031] Figure 5 This is a partial exploded view of an embodiment of this application;
[0032] Figure 6 This is a schematic diagram of the structure of the reinforcing member in one embodiment of this application.
[0033] Reference numerals: 1. Guide rail body; 100. Through hole; 11. First side; 110. Mounting position; 12. Second side; 120. Adaptor groove; 13. First mating end; 14. Second mating end; 2. Pulley; 20. Positioning groove; 200. Mounting hole; 3. Fixing component; 31. Bearing section; 311. First shaft section; 312. Second shaft section; 32. Limiting section; 4. Reinforcing member; 41. Abutting part; 42. Connecting part; 421. First connecting part; 422. Second connecting part; 4221. Base; 4222. Connecting section; 50. Connecting structure; 60. Auxiliary rib. Detailed Implementation
[0034] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the specific implementation methods of this application will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without creative effort.
[0035] To keep the drawings concise, each drawing only schematically shows the parts relevant to the application; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" can mean not only "only one" but also "more than one."
[0036] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.
[0037] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0038] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application 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 application.
[0039] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0040] With the rapid development of the automotive industry, vehicles are placing higher performance demands on various components, especially in terms of lightweighting and cost control. As a key component of the car door system, the structural design of automotive window regulators is constantly evolving towards lighter weight and greater integration. In recent years, cable-driven plastic guide rail window regulators have gradually gained widespread application in the market due to their advantages such as light weight, low manufacturing cost, and easy assembly.
[0041] In rope pulley lifting structures, the pulley assembly, as the core transmission component, bears a significant load transmitted by the wire rope. Therefore, high requirements are placed on the structural strength and stability of the pulley assembly location. Existing lifting guide rails are mostly made of plastic to achieve overall lightweighting, but their structural strength is relatively weak, especially at the pulley mounting points. Due to long-term concentrated stress, these areas are more prone to deformation and fatigue damage, affecting the overall operational stability and service life of the lifting system.
[0042] In addition, due to the poor creep performance of plastic guide rails, in the durability test and creep test of the lifting device, it is easy to produce problems such as insufficient local stiffness, easy deformation and easy aging, which leads to malfunctions such as running jam, abnormal noise, or even lifting failure of the lifting mechanism.
[0043] In one embodiment, refer to the appendix to the specification. Figure 1 The present application describes a lifting guide rail assembly that can make the stress distribution near the mounting position 110 of the pulley 2 more balanced and reduce the risk of local deformation.
[0044] Reference manual attached Figures 1 to 3This application provides a lifting guide rail assembly, including a guide rail body 1, a pulley 2, a fixing component 3, and a reinforcing component 4. The guide rail body 1 has a first side 11 and a second side 12 disposed opposite to each other. The first side 11 has a mounting position 110 for mounting the pulley 2. Specifically, the pulley 2 is rotatably connected to the mounting position 110 via the fixing component 3, thereby realizing the transmission and guidance of the wire rope. (For improved illustration, the guide rail body 1 in the attached drawings represents a portion of the actual guide rail structure.)
[0045] Furthermore, to enhance the local strength of the pulley 2 mounting area, the aforementioned reinforcing member 4 is provided on the second side 12 of the guide rail body 1. The reinforcing member 4 is made of metal and has excellent rigidity and durability, effectively compensating for the structural disadvantages of the plastic guide rail in local high-stress areas.
[0046] Specifically, the reinforcing member 4 includes an abutting portion 41 and a connecting portion 42. The connecting portion 42 is used to fix and connect to the guide rail body 1, for example, by means of screwing, snap-fitting, riveting or welding, so that the reinforcing member 4 and the guide rail body 1 are reliably combined. At the same time, at least part of the abutting portion 41 forms a surface-to-surface fit with the second side 12 of the guide rail body 1 to enhance its load-bearing capacity and resistance to deformation.
[0047] The reinforcing member 4 is positioned at the mounting position 110 of the pulley 2, which can effectively disperse the concentrated load generated by the tension of the wire rope during the operation of the pulley 2, thereby improving the structural strength and fatigue life of key positions on the guide rail body 1 without significantly increasing the weight and cost of the whole machine.
[0048] Understandably, through the above structural design, the lifting guide rail assembly of this application can significantly improve the rigidity and deformation resistance of the area where the pulley 2 is located in practical applications, making the guide rail more suitable for high-frequency lifting conditions or scenarios with large wire rope tension, effectively solving the reliability problems of local cracking, jamming or even falling off caused by the limited strength of plastic structure in the existing technology.
[0049] In some implementations, the connecting part 42 of the reinforcing member 4 can be configured as an installation structure that matches the preset hole position on the guide rail body 1, for example, by mechanical connection by screws or rivets, or by permanent fixation by means of hot riveting, ultrasonic welding or other methods.
[0050] Alternatively, the abutment portion 41 in this embodiment may be a plate-like structure, a rib-like structure, or an irregularly shaped structure with a certain curvature.
[0051] Further, please refer to the attached instruction manual. Figure 5 The pulley 2 has an annular positioning groove 20 on its outer periphery. Specifically, the size and shape of the positioning groove 20 are adapted to the diameter and profile of the steel wire rope inside the glass lifter.
[0052] With the above-mentioned structural design, the positioning groove 20 can effectively guide and constrain the movement path of the wire rope during the rotation of the pulley 2, ensuring that the wire rope always runs on the predetermined track and preventing it from deviating to the edge of the pulley 2, causing uneven contact or abnormal friction between the wire rope and the pulley 2, thereby further improving the stability and reliability of the entire window lifter operation.
[0053] In addition, the positioning groove 20 also has a limiting function. When the window regulator is rapidly lifting or subjected to a large load, the wire rope is prone to lateral jumping. Through the concave structure design of the positioning groove 20, it can effectively limit its jumping or swerving, avoid the malfunctions such as jamming and abnormal noise caused by the wire rope going out of the groove, and improve service life and safety performance.
[0054] Additionally, optional, such as Figure 2 As shown, the guide rail body 1 is provided with an adapter groove 120 on the second side 12. When the reinforcing member 4 is fixed to the guide rail body 1, at least part of the abutting part 41 abuts against the bottom wall of the adapter groove 120.
[0055] Understandably, through this structural design, on the one hand, the adapter groove 120 serves as the pre-positioning area for the installation of the abutment part 41, which can effectively guide the installation direction of the reinforcing member 4 during the assembly process, thereby improving assembly efficiency and accuracy; on the other hand, the bottom wall of the adapter groove 120 and the abutment part 41 form a surface-to-surface structural support, which increases the load-bearing area of the reinforcing member 4, further improving the connection stability of the reinforcing member 4 and the compressive and deformation resistance of the corresponding part of the guide rail body 1.
[0056] In one embodiment, based on the content of the above embodiments, such as Figure 1 As shown, the reinforcing member 4 includes at least two connecting portions 42. One end of each connecting portion 42 is connected to the outer edge of the abutting portion 41 of the reinforcing member 4, and the other end extends outward from the edge of the abutting portion 41. The direction of extension is approximately perpendicular to the abutting portion 41 or at a certain angle to form a cantilever beam structure.
[0057] It should be noted that the cantilever structure can be set to be inserted into the slot or corresponding hole of the guide rail body 1; or it can be attached to the outer wall of the guide rail body 1 and reliably fixed to the guide rail body 1 by screws, clips or welding to form a local fixed support node, so that the connection part 42 can not only enhance the overall stability of the structure, but also improve the attachment reliability of the abutment part 41 and prevent it from loosening or shifting under long-term load.
[0058] Among them, optionally, multiple connecting parts 42 are arranged along the length direction of the reinforcing member 4. For example, connecting parts 42 can be respectively arranged at both ends of the abutting part 41 to form a two-point limit fit, effectively restricting the relative movement of the reinforcing member 4 under the stress condition, and enhancing its stability and rigid support effect in the area of the pulley 2.
[0059] In special stress scenarios, three or more connecting parts 42 can also be set as needed to enhance the limiting effect and improve the anti-torsion and anti-offset capabilities of the overall structure. However, the number of connecting parts 42 should not be too large, otherwise it may cause problems such as the complication of the processing technology, the increase of the die structure, and the rise of the material cost, affecting the integrated design and manufacturing efficiency of the product. Therefore, in this application, the number, position and structural form of the connecting parts 42 can be flexibly selected according to specific usage requirements, taking into account both structural reliability and manufacturing feasibility.
[0060] Furthermore, the connecting part 42 can be designed as a plug-in structure with a guiding design (guiding cone), which is convenient for the quick positioning and reliable installation of the reinforcing member 4 on the guide rail body 1, so as to improve the assembly efficiency and structural accuracy; it can also be integrally formed with the abutting part 41 through processes such as stamping, bending, and welding, simplifying the processing procedures and reducing the manufacturing cost.
[0061] In one embodiment, the connecting part 42 includes a first connecting part 421 and a second connecting part 422. The first connecting part 421 and the second connecting part 422 are respectively connected to the abutting part 41 of the reinforcing member 4 at a preset angle, and are arranged at opposite ends in the length direction of the abutting part 41, so that the entire reinforcing member 4 presents a structure profile similar to a "C" shape. It should be noted that the above "preset angle" can be set according to the structural requirements to achieve a balance between structural stability and processing convenience, and can be an acute angle, a right angle or some specific angles; in a specific embodiment, both the first connecting part 421 and the second connecting part 422 are connected to the abutting part 41 at an angle of 90 degrees, that is, both are arranged vertically relative to the abutting part 41.
[0062] Specifically, the abutting part 41 is used for large-area surface contact with the second side 12 of the guide rail body 1 and corresponds to the stress area where the pulley 2 is located. The first connecting part 421 and the second connecting part 422 extend vertically from both ends of the abutting part 41, and their extending directions are perpendicular to the contact surface of the abutting part 41 relative to the guide rail body 1 and extend towards the side of the guide rail body 1, for realizing fixed connection with the corresponding installation structure of the guide rail body 1.
[0063] It can be understood that this "C"-shaped contour with continuous three sides and an open side can provide a more reliable limiting function for the overall structure, effectively preventing the reinforcing member 4 from warping, rotating or undergoing relative displacement under the action of load or vibration. Among them, the first connecting portion 421 and the second connecting portion 422 form two stable limiting points in the height direction, and then form a firm fixation through the cooperative abutting portion 41, improving the bearing strength and greatly enhancing the ability of the structure to suppress dynamic loads and impact loads.
[0064] The first connecting portion 421 and the second connecting portion 422 can be integrally manufactured with the abutting portion 41 by using integral stamping forming or welding forming processes. Further, at the end of each connecting portion 42, forms such as insertion feet, buckles, locking protrusions, etc. can be preset according to the structure of the guide rail body 1 to quickly achieve mechanical limiting and position fixation, simplify the assembly process and ensure the installation accuracy.
[0065] In one embodiment, based on the above content, referring to the attached drawings of the specification again Figures 1 to 3 , the guide rail body 1 is provided with a first docking end 13 and a second docking end 14 for cooperating with the connecting portion 42 of the reinforcing member 4. The first docking end 13 is arranged corresponding to the first connecting portion 421, and the second docking end 14 is arranged corresponding to the second connecting portion 422, so that the reinforcing member 4 can be engaged with the guide rail body 1.
[0066] Specifically, the first docking end 13 penetrates or partially penetrates its structure in the thickness direction of the guide rail body 1 to form a fitting structure adapted to the first connecting portion 421. From the above content, it can be seen that the first connecting portion 421 is a vertically extending structure on the reinforcing member 4, and its shape, size correspond to the first docking end 13, so that it can be inserted or clamped into the first docking end 13.
[0067] Through the above matching relationship, the first connecting portion 421 can be quickly positioned during structural assembly and form a preliminary fixation with the guide rail body 1, effectively restricting its relative movement in the vertical direction or the lateral direction.
[0068] Similarly, a second docking end 14 is provided on the guide rail body 1, and its structure is similar to that of the first docking end 13, and it can also be a through hole, notch, depression, etc. formed by penetrating or partially penetrating the thickness direction of the guide rail body 1 for adaptively connecting with the second connecting portion 422 of the reinforcing member 4.
[0069] Among them, the second connecting portion 422 and the second docking end 14 can form a second fixing point through a fitting embedding, insertion or buckle structure, improving the installation stability of the entire reinforcing member 4 and the load dispersion ability.
[0070] Understandably, through the cooperation relationship between the first connecting part 421 and the first docking end 13, and the second connecting part 422 and the second docking end 14, the reinforcing member 4 in this embodiment can achieve rapid assembly and stable connection with the guide rail body 1 by snap-fit, eliminating the need for traditional mechanical connection methods such as screws and rivets, simplifying the assembly process and improving production efficiency.
[0071] Optionally, in one embodiment, the first connecting part 421 has a plate-like structure, and the first mating end 13 is configured as a first through groove formed through the thickness direction of the guide rail body 1. The opening size, groove depth, and groove width of the first through groove are adapted to the plate-like structure of the first connecting part 421, so that the first connecting part 421 can be stably inserted into the first through groove.
[0072] In the snap-fit state, the first connecting part 421 is inserted into the first through groove along the extension direction of the through groove. The mating end face of the two is a flat end face, thereby improving the overall structure and assembly accuracy without affecting the flatness and appearance integrity of the structure.
[0073] It should be noted that the outer surface of the first connecting part 421 of the plate structure is relatively flat and smooth, which optimizes the connection stability between the reinforcing member 4 and the guide rail body 1, and further limits the risk of the reinforcing member 4 warping, deflecting or detaching. On the other hand, the plate structure itself is simple to manufacture and has a compact structure, which is conducive to batch processing of molding processes such as stamping, bending or injection molding; moreover, the through groove can be integrally molded during the molding stage of the guide rail body 1.
[0074] Based on the content of this embodiment, the first connecting part 421 is a plate-like structure. This plate-like structure can be a straight plate-like structure or a curved plate-like structure with a certain curvature, depending on the shape of the guide rail body 1, the installation space, or the structural stress requirements. Among them, the straight plate-like structure is generally planar, which is easy to process and manufacture and has low manufacturing cost.
[0075] The curved plate structure can also achieve a snap-fit connection between the first connecting part 421 and the first mating end 13. It should be noted that this curvature can be unidirectional bending or bidirectional bending as needed to adapt to the first through groove with the corresponding curved surface shape on the guide rail body 1, so that a stable fit is formed between the curved surfaces after insertion, further improving the displacement resistance and limiting effect of the connecting part 42. At the same time, the plate structure with a certain curvature can form a larger contact area after assembly, which is beneficial to dispersing external loads and improving connection strength and long-term stability.
[0076] Regardless of whether it is a straight or curved plate structure, the outer edge shape of the first connecting part 421 corresponds to the inner shape of the first through groove, ensuring that it can be smoothly inserted and firmly fitted during insertion and snapping, thereby achieving a surface-to-surface connection effect in terms of structure.
[0077] In one embodiment, such as Figure 6 As shown, the second connecting part 422 includes a base 4221 and at least two connecting segments 4222 that are bent relative to the base 4221. One end of the base 4221 and the connecting segments 4222 are connected to the abutting part 41, and the other end can be mechanically connected or plugged into the second mating end 14 (such as through hole 100, through groove or slot structure) on the guide rail body 1.
[0078] The base 4221 is located between the two connecting segments 4222 and is connected to form an integral structure. The connecting segments 4222 are set at a certain angle relative to the base 4221. The angle can be flexibly set according to the assembly requirements, the force transmission path or the shape of the guide rail body 1, so that the second connecting part 422 forms a contour that is concave towards the center of the reinforcing member 4 or convex outward away from the center of the reinforcing member 4.
[0079] Under normal circumstances, the connecting segment 4222 and the base 4221 form an obtuse angle and are connected to the base 4221 through an arc transition, thus forming a flexible transition structure. This can significantly reduce the stress concentration between the connecting segment 4222 and the base 4221, and avoid fluctuations or forces generated during operation that cause local stress on the second connecting part 422, thereby improving the fatigue life and deformation resistance of the overall structure.
[0080] Furthermore, by setting the connection to an obtuse angle, the opening of the connecting segment 4222 relative to the base 4221 is greater, making the entire second connecting part 422 present an "unfolded" state in terms of structure, which is not only beneficial for structural layout, but also brings a larger effective contact area.
[0081] Furthermore, the larger effective contact area allows the second connecting part 422 of the reinforcing member 4 to be installed on the second mating end 14 corresponding to the guide rail body 1. This also facilitates the more even distribution and transmission of external loads (such as wire rope tension or impact load under test conditions) through the second connecting part 422 to the overall structure of the guide rail body 1, thus avoiding material fatigue, local cracking, or deformation of the guide rail body 1 caused by single-point stress.
[0082] In one embodiment, the second connecting portion 422 specifically includes a base 4221 and two connecting segments 4222, wherein the two connecting segments 4222 are respectively disposed on both sides of the base 4221 and symmetrically connected to the two ends of the base 4221. The included angles between the two connecting segments 4222 and the base 4221 are equal, so that the second connecting portion 422 exhibits an axially symmetrical state in structure.
[0083] Understandably, the two connecting segments 4222 are connected to the left and right sides of the base 4221 respectively, forming a “∧” shape as shown in the figure, or a “U” shape. Through this form of second connecting part 422 and the second docking end 14 on the guide rail body 1, the offset tendency of the reinforcing member 4 relative to the guide rail body 1 in the horizontal and vertical directions can be limited in the spatial layout, thereby enhancing the fitting stability and impact resistance between the reinforcing member 4 and the guide rail body 1.
[0084] Furthermore, the axisymmetric state of the second connecting part 422 also provides good stress balance. When the pulley 2 assembly is subjected to repeated loads in the corresponding installation area of the guide rail body 1 due to the tension of the wire rope, the two symmetrically arranged connecting sections 4222 can distribute the load to both sides of the reinforcing member 4 and the entire abutment part 41, effectively reducing local stress concentration and improving the creep resistance and service life of the guide rail body 1 in the installation area of the pulley 2.
[0085] In one embodiment, combined Figure 1 and Figure 5 The fixed component 3 includes a bearing section 31 and a limiting section 32 connected to each other. The bearing section 31 is used to support the pulley 2 and serve as the axis structure for its rotation, while the limiting section 32 is used to limit the movement of the pulley 2 in the axial direction.
[0086] Specifically, the pulley 2 passes through the outer periphery of the bearing section 31 and forms a rotatable connection around the bearing section 31. That is, the pulley 2 can rotate relative to the bearing section 31 as the axis of rotation under the drive of external force, so as to drive the steel wire rope to move and thus realize the lifting and lowering movement of the glass.
[0087] The limiting section 32 is located at one end of the bearing section 31, which is the side away from the guide rail body 1. This allows it to directly contact and abut against one side of the pulley 2 after the pulley 2 is aligned with the mounting position 110 on the guide rail body 1. When the pulley 2 is installed, the limiting section 32 acts as an end stop, thereby limiting the axial movement of the pulley 2 and preventing it from shifting or loosening along the axial direction due to load impact or long-term operation, thus improving the overall assembly stability and reliability.
[0088] In the actual structure, the load-bearing section 31 can be a cylindrical structure made of metal or high-strength engineering plastic, with its outer diameter matching the inner hole of the pulley 2 to ensure good rotational matching. The limiting section 32 can be designed as a flange or annular protrusion, etc., depending on the process conditions and cost requirements.
[0089] Furthermore, the bearing section 31 preferably adopts a segmented shaft pin structure. Specifically, the bearing section 31 includes a first shaft section 311 and a second shaft section 312 that are connected to each other. The first shaft section 311 is located between the limiting section 32 and the second shaft section 312. The overall structure forms a stepped structure with decreasing dimensions in the axial direction, starting from the limiting section 32, passing through the first shaft section 311, and then to the second shaft section 312.
[0090] Specifically, the radial dimension of the first shaft segment 311 is larger than that of the second shaft segment 312. For example, the first shaft segment 311 is a large-diameter segment, and the second shaft segment 312 is a small-diameter segment. The two segments can be connected by a step transition or an arc transition. The first shaft segment 311 matches the size of the mounting hole 200 of the pulley 2 and is fitted into the mounting hole 200 of the pulley 2, so that the pulley 2 can be reliably rotated around the first shaft segment 311. The outer circumferential surface of the first shaft segment 311 forms a relative sliding fit with the mounting hole 200 of the pulley 2, which is used to connect and support the rotational load of the pulley 2.
[0091] Meanwhile, the guide rail body 1 is provided with a through hole 100 for accommodating the second shaft segment 312. The outer diameter of the second shaft segment 312 is smaller than that of the first shaft segment 311, so it can be inserted and interference-fitted or clearance-fitted into the through hole 100 of the guide rail body 1, thereby allowing the entire fixing component 3 to be installed on the guide rail body 1 with the second shaft segment 312 as the positioning reference, thus completing the structural coupling between the pulley 2 and the guide rail.
[0092] In this embodiment, the stepped design of the first shaft segment 311 and the second shaft segment 312 allows the pulley 2 to be mounted on a large-diameter section, providing a larger contact surface and improving support stability. On the other hand, by inserting the second shaft segment 312 into the through hole 100 of the guide rail body 1, the correct installation direction of the fixing component 3 and the structure's pull-out resistance can be ensured, thereby enhancing the vibration and impact resistance of the entire pulley 2 structure during operation.
[0093] Based on the above, further reference can be made to the appendix. Figure 4 and Figure 5 A connecting structure 50 is provided at the end of the second shaft segment 312 away from the first shaft segment 311. The connecting structure 50 is used to press and fix the fixing component 3 to the outside of the reinforcing member 4, thereby achieving stable coupling between the fixing component 3, the guide rail body 1 and the reinforcing member 4 in the overall structure.
[0094] Specifically, the connecting structure 50 uses a riveting process (such as riveting flange) to fix the reinforcing member 4 to the side away from the guide rail body 1, thus forming a reliable axial limiting and structural fixing state. During the riveting process, the free end of the connecting structure 50 is plastically deformed by external force, and is pressed along the outside of the reinforcing member 4 to form a riveting joint, thereby achieving relative fixing of the fixing member 3 and the reinforcing member 4. At the same time, the axial position of the fixing member 3 is limited by the body of the reinforcing member 4 to prevent it from loosening or slipping from the guide rail body 1.
[0095] In one embodiment, the connecting structure 50 is further provided with a plurality of auxiliary ribs 60. These auxiliary ribs 60 are arranged circumferentially along the end of the second shaft segment 312, and are preferably a plurality of evenly spaced ribs or protrusions.
[0096] During the riveting process, the auxiliary rib 60 can be pressed into the reinforcing member 4, thereby forming a mating relationship between the two. It should be noted that the strength of the reinforcing member 4 (the strength of the mating area between the reinforcing member 4 and the auxiliary rib 60) is less than the strength of the auxiliary rib 60. Therefore, the auxiliary rib 60 can form a certain indentation or local deformation on the surface of the reinforcing member 4 during riveting, thereby enhancing the anti-rotation performance between the connecting structure 50 and the reinforcing member 4.
[0097] This configuration not only ensures reliable positioning of the fixed component 3 in both axial and radial directions, but also effectively prevents vibration or frictional torque caused by long-term operation of the pulley 2 from being transmitted to the fixed component 3, thereby preventing accidental rotation or loosening of the fixed component 3.
[0098] It should be noted that the above embodiments can be freely combined as needed. The above are merely preferred embodiments of this application. It should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.
Claims
1. A lifting guide rail assembly, characterized in that, For a window regulator, comprising: A guide rail body having a first side and a second side facing away from each other, and an installation position is provided on the first side of the guide rail body; A pulley and a fixing component, the pulley is rotationally connected to the installation position through the fixing component; A reinforcing member, the reinforcing member is made of metal, and the reinforcing member includes an abutting portion and a connecting portion; The reinforcing member is docked to the guide rail body from the second side of the guide rail body and is arranged corresponding to the installation position. Among them, the connecting portion and the guide rail body are relatively connected, and at least a part of the abutting portion and the second side of the guide rail body form a surface-to-surface abutment, which is used to assist in strengthening the local strength of the guide rail body.
2. The lifting guide rail assembly according to claim 1, wherein There are at least two connecting portions in the reinforcing member, one end of each connecting portion is simultaneously connected to the outer edge of the abutting portion, and the other end of each connecting portion extends in a preset direction to form a cantilever structure.
3. The lifting guide rail assembly according to claim 2, wherein The connecting portion includes a first connecting portion and a second connecting portion; The first connecting portion and the second connecting portion are respectively connected to the abutting portion at a preset angle and are respectively located at both ends of the abutting portion in the length direction of the abutting portion, so that the reinforcing member forms a "匚”-shaped profile.
4. The lifting guide rail assembly according to claim 3, wherein The guide rail body is provided with a first docking end, the first docking end penetrates or partially penetrates the guide rail body in the thickness direction, the first docking end and the first connecting portion are adaptively arranged, and the first connecting portion and the first docking end are snap-connected; The guide rail body is further provided with a second docking end, the second docking end penetrates or partially penetrates the guide rail body in the thickness direction, the second docking end and the second connecting portion are adaptively arranged, and the second connecting portion and the second docking end are snap-connected.
5. The lifting guide rail assembly according to claim 4, wherein The first connecting portion has a plate-like structure, and the first docking end is set as a first through groove that penetrates the guide rail body in the thickness direction, so that when the first connecting portion is snap-connected to the first through groove, the mating end surfaces of the first connecting portion and the first docking end are flat end surfaces.
6. The lifting guide rail assembly according to claim 4 or 5, wherein The second connecting portion includes a base portion and at least two connecting segments bent relative to the base portion. One end of the base portion and the connecting segments are both connected to the abutting portion. The base portion is arranged between the connecting segments and is connected to form a whole. The connecting segments form a certain angle with the base portion, so that the second connecting portion can be recessed towards the center of the reinforcing member or protruded away from the center of the reinforcing member.
7. The lifting guide rail assembly according to claim 6, wherein The second connecting portion includes one base portion and two connecting segments. The two connecting segments are respectively connected to both sides of the base portion, and the angles between the two connecting segments and the base portion are equal, so that the second connecting portion is in an axisymmetric state.
8. The lifting guide rail assembly according to any one of claims 1-5 and 7, characterized in that, The fixing component includes a limiting section and a bearing section connected together. The pulley passes through the outer periphery of the bearing section and can rotate around the bearing section as an axis under the action of external force. The limiting section is located at one end of the bearing section. When the pulley is connected to the mounting position, the limiting section abuts against one side of the pulley to axially limit the pulley.
9. The lifting guide rail assembly according to claim 8, characterized in that, The bearing section includes a first shaft section and a second shaft section connected to each other. The first shaft section is located between the limiting section and the second shaft section. The radial dimension of the first shaft section is larger than the radial dimension of the second shaft section, so as to form a segmented shaft pin structure with decreasing dimensions. The first shaft segment is fitted into the mounting hole of the pulley for connecting with the pulley; the guide rail body is provided with a through hole, and the second shaft segment is fitted into the through hole; A connecting structure is provided at the end of the second shaft segment away from the first shaft segment. The connecting structure is pressed to the side of the reinforcing member away from the guide rail body by riveting, so that the fixing component and the reinforcing member are relatively fixed.
10. The lifting guide rail assembly according to any one of claims 1-5, 7, and 9, characterized in that, The pulley is provided with an annular positioning groove on its outer periphery. The positioning groove is used to connect with the steel wire rope inside the glass lifter and to limit the movement of the steel wire rope. And / or, The guide rail body has an adapter groove on the second side. When the reinforcing member is fixed to the guide rail body, at least part of the abutting part abuts against the bottom wall of the adapter groove.