Guide shoe for glass lifters

Abstract

A guide seat for a window regulator includes a pulley and a pulley groove for placing the pulley. The guide seat has at least two cable grooves connected to the pulley grooves and through which steel cables pass. The two cable grooves coincide with the tangents of the pulley, and an angle is formed between the two tangents. Corresponding to the number of cable grooves, a blocking member is also provided within the pulley groove to prevent the steel cable entering the corresponding groove from detaching from the pulley. The beneficial effect of this invention is that by providing at least two cable grooves, different insertion paths for the steel cable can be selected according to the installation angle requirements, avoiding the need to replace the guide seat due to changes in the cable insertion angle, thus improving structural adaptability.

Description

Technical Field

[0001] This utility model relates to a fixing device for a glass lifter, and more particularly to a guide seat for a glass lifter. Background Technology

[0002] In automotive window lift systems, the guide seat, a key component, is typically mounted on both sides of the guide rail. Its core function is to provide a stable trajectory for the steel cable that drives the window lift. In existing technologies, the guide seat body is made of engineering plastic or metal, with an embedded pulley structure and longitudinal slots for the steel cable to pass through. During operation, the drive motor winds the window glass along the guide rail by winding the steel cable. At this time, the pulleys and slots within the guide seat work together to reduce the sliding friction resistance of the steel cable and maintain its tension by constraining its lateral displacement. To accommodate the installation space of different vehicle models, the guide seat is usually designed with adjustable mounting holes, and the size of its slot must strictly match the diameter of the steel cable. This structure can meet basic guiding requirements under normal operating conditions, but structural defects are easily exposed after system layout changes or long-term use.

[0003] Existing guide seats suffer from significant shortcomings in practical applications due to structural design limitations. Firstly, the single-sized insertion slot and fixed pulley layout mean that when the drive motor mounting position needs to be adjusted due to vehicle model changes requiring a change in the cable routing, the entire guide seat assembly must be replaced. This not only increases parts inventory pressure but also directly drives up overall vehicle manufacturing costs. Secondly, long-term reciprocating motion easily leads to wear on the contact surface between the cable and the pulley. Traditional insertion slots lack anti-detachment locking mechanisms, posing a risk of accidental detachment from the insertion slot when the cable diameter decreases to a critical value due to wear. This potential hazard could not only cause window lift function failure but also significantly increase after-sales maintenance costs due to frequent malfunctions. While existing technologies alleviate the problem by periodically replacing components, they fail to fundamentally improve the structural adaptability and safety reliability of the guide seat. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a guide seat for window lifters that eliminates the need to replace the guide seat when the angle of the steel cable entering the guide seat changes and has a function to prevent the steel cable from falling off.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a guide seat for a glass lifter, the guide seat comprising a pulley and a pulley groove for placing the pulley, the guide seat having at least two cable grooves connected to the pulley grooves and for cable to pass through, the two cable grooves coinciding with the tangents of the pulley respectively, and an included angle between the two tangents coinciding with the cable grooves, and a blocking member corresponding to the number of cable grooves in the pulley groove for preventing the cable passing through the corresponding cable groove from falling off the pulley.

[0006] The beneficial effects of this invention are as follows: By setting at least two cable grooves, the cable can select different insertion paths according to the installation angle requirements, avoiding the need to replace the guide seat due to changes in the cable insertion angle, thus improving structural adaptability. The setting of the blocking component can effectively limit the radial displacement of the cable. Even if a gap occurs between the cable and the pulley due to wear, the physical obstruction of the blocking component can still prevent the cable from completely detaching from the pulley, significantly improving system reliability. As a preferred embodiment, the blocking component can adopt an arc-shaped baffle structure, with its inner arc surface maintaining a certain gap with the outer circle of the pulley, which can both limit the cable from jumping off and not increase sliding resistance.

[0007] Furthermore, the blocking member is correspondingly disposed at the insertion point of the steel cable into the pulley, the pulley is disposed at the center of the pulley groove, and the radial distance between the blocking member and the center of the pulley groove is greater than the outer diameter of the pulley.

[0008] This structure ensures that the barrier is located in the stress concentration area when the cable enters the pulley, effectively preventing reverse displacement of the cable along the insertion direction. By precisely controlling the distance between the barrier and the pulley center, an effective anti-derailment space is created. As a preferred embodiment, the barrier can be a raised structure with a guide ramp extending in the same direction as the cable insertion, providing guidance during cable installation and blocking reverse movement. An elastic support can be provided at the bottom of the barrier, allowing for slight deformation to absorb impact when the cable is subjected to abnormal stress, preventing structural damage.

[0009] Furthermore, it also includes a buffer groove, in which an elastic buffer pad is provided, the height of which is higher than the height of the guide seat and the pulley.

[0010] The buffer pad absorbs the impact energy when the door closes through elastic deformation, preventing a rigid collision between the glass and the guide seat. The recessed design of the buffer groove both fixes the position of the buffer pad and provides space for its compression deformation. As a preferred method, the buffer pad can be made of honeycomb silicone with anti-slip textures on its surface to increase the coefficient of friction. The buffer groove can be designed with a trapezoidal cross-section, with drainage holes at the bottom connecting to the pulley groove, ensuring the installation stability of the buffer pad and guiding accumulated water out.

[0011] Furthermore, there are two cable grooves, and the buffer groove is disposed between the two cable grooves.

[0012] The double cable grooves and the central buffer groove form a symmetrical layout, ensuring both structural compactness and balancing the forces on both sides. The central position of the buffer groove can evenly absorb the vibration energy from the cables on both sides. As a preferred approach, the axes of the two cable grooves can be symmetrically distributed in a V-shape, with their intersection point located in the tangent direction of the pulley. A vibration damping channel connected to the cable grooves is set at the bottom of the buffer groove, forming a multi-path dissipation structure for vibration energy.

[0013] Furthermore, the pulley includes a working groove that mates with the steel cable and a pre-installation groove that facilitates the insertion of the steel cable. The pre-installation groove is provided with a pressure block for pressing the steel cable into the working groove. The distance between the pre-installation groove and the bottom surface of the pulley groove is greater than the distance between the working groove and the bottom surface of the pulley groove.

[0014] This hierarchical design enables rapid assembly and precise positioning of the steel cable. The depth difference of the pre-assembly slots forms an installation guide, and the pressure block provides an automatic positioning function. As a preferred method, the pre-assembly slot can be designed as a U-shaped opening slot, which is shallower than the working slot. The pressure block adopts a wedge structure embedded in the pulley body. When the steel cable is under tension, the inclined surface of the pressure block can guide the steel cable step by step to the bottom of the working slot, completing the self-centering assembly process.

[0015] Furthermore, a transition area is provided between the pre-installation slot and the working slot, and the pressure block is located at the center of the transition area, with the top of the pressure block on the same horizontal plane as the upper surface of the working slot.

[0016] The gradual structure of the transition area reduces the resistance to cable movement, and the equal-height design of the pressure block ensures a smooth transition of the cable. As a preferred approach, the transition area can be designed as a curved surface with a gradually decreasing radius of curvature from the pre-assembly groove to the working groove. A guide groove matching the diameter of the cable is set on the top of the pressure block, forming a three-level positioning structure (pre-assembly groove - guide groove - working groove) to ensure a smooth and reliable assembly process.

[0017] Furthermore, it also includes a drainage trough for draining water accumulated in the pulley groove, the drainage trough being disposed at the edge of the pulley groove.

[0018] The edge layout of the drainage trough conforms to the gravity flow characteristics of liquids, effectively preventing water accumulation. As a preferred design, the drainage trough can be designed as a ring-shaped groove surrounding the pulley groove, with radial guide ribs at its bottom. The ends of the guide ribs connect to longitudinal drainage channels, forming a three-dimensional drainage network. The height of the guide ribs gradually decreases from the center of the pulley groove to the outer edge, utilizing capillary effect to accelerate drainage.

[0019] Furthermore, it also includes a guide rail that mates with the guide seat. The guide rail includes L-shaped side connecting rails located on both sides and arranged in an arc along the length of the guide rail, and a snap-fit ​​hole located at the center. The guide seat is provided with snap-fit ​​grooves that mate with the two side connecting rails of the guide rail and snap-fit ​​holes that mate with the snap-fit ​​holes.

[0020] This connection structure achieves multi-directional limiting, with the L-shaped side rail providing radial constraint and the snap-fit ​​holes providing axial positioning. As a preferred option, the inner wall of the snap-fit ​​groove can be provided with an array of elastic protrusions, forming multi-point contact with the arc-shaped surface of the side connecting rail. The snap-fit ​​employs a hook structure, with the hook angle forming an angle with the direction of guide rail movement, allowing the guide rail to slide normally while preventing accidental disengagement.

[0021] Furthermore, the snap-fit ​​groove is provided with a planar expansion groove, which cooperates with the arc-shaped side connecting rail to expand and fix the guide rail.

[0022] The fit between the flat and curved surfaces creates a self-locking effect, eliminating assembly gaps. As a preferred method, the expansion groove can be designed with a trapezoidal cross-section, with its inclined sidewalls forming line contact with the arcuate surface of the side connecting rail. The surface of the side connecting rail can be provided with anti-slip textures, and an elastic pad is embedded in the expansion groove. Tolerances are manufactured through deformation compensation to ensure a gapless fit.

[0023] Furthermore, the pulley is installed at the center of the pulley groove by riveting.

[0024] The riveting process ensures the positioning accuracy and connection reliability of the pulley. As a preferred method, the pulley shaft can adopt a stepped shaft structure with a positioning boss. The riveting die is equipped with a limiting flange, and the boss and flange cooperate to ensure coaxiality during riveting. The riveting points are arranged in a three-point layout at 120° evenly, which ensures the connection strength and avoids pulley deformation. Attached Figure Description

[0025] Figure 1 This is a front view of an embodiment of the present utility model;

[0026] Figure 2 This is a side view of an embodiment of the present utility model;

[0027] Figure 3 This is a rear view of an embodiment of the present utility model;

[0028] Figure 4 This is an isometric view of the pulley in an embodiment of the present invention;

[0029] Figure 5 This is a side view of the pulley in an embodiment of the present invention;

[0030] Figure 6 This is a front view of the guide seat in an embodiment of the present utility model. Detailed Implementation

[0031] This utility model embodiment provides a guide seat for a window regulator, such as... Figure 1-6As shown: The guide seat 1 includes a pulley 2 located at the center and a pulley groove 11 surrounding the pulley 2. The pulley 2 is fixed to the center of the pulley groove 11 by riveting. Two cable grooves 12 are symmetrically opened on both sides of the pulley groove 11. The two cable grooves 12 coincide with the tangent of the pulley 2 and form a certain angle between them. A blocking member 14 is provided at the entrance of each cable groove 12. The radial distance between the blocking member 14 and the center of the pulley 2 is larger than the outer diameter of the pulley 2. A buffer groove 15 is provided between the two cable grooves 12. A rubber buffer pad 151 is embedded in the buffer groove 15. The top surface of the buffer pad 151 is higher than the surface of the guide seat 1 and the surface of the pulley by a certain height, and this height is the buffer distance.

[0032] The pulley 2 has a V-shaped working groove 22 and a U-shaped pre-assembly groove 21 on its surface. The distance between the pre-assembly groove 21 and the bottom surface of the pulley groove 11 is larger than that between the working groove 22 and the working groove 22. A sloping transition area 24 is formed between the working groove 22 and the pre-assembly groove 21. A pressure block 23 is provided at the center of the transition area 24, and the top of the pressure block 23 is flush with the upper edge of the working groove 22. A rectangular drainage groove 16 is provided at the edge of the pulley groove 11.

[0033] The bottom of the guide seat 1 is provided with a snap-fit ​​groove 17 that mates with the guide rail 3. The snap-fit ​​groove 17 is provided with a planar expansion groove 171 with a gradually changing width. The guide rail 3 is provided with L-shaped side connecting rails 31 on both sides, and a snap-fit ​​hole 32 in the center. The snap-fit ​​groove 17 matches the arc contour of the side connecting rail 31, and the bottom surface of the guide seat 1 is provided with an elastic snap 18 that mates with the snap-fit ​​hole 32.

[0034] The working principle is as follows: When the steel cable 4 is inserted from different angles, it can be inserted into the corresponding steel cable groove 12. When the steel cable 4 slides in the working groove 22 of the pulley 2, the blocking member 14 restricts its axial displacement. During installation, the steel cable 4 can be placed in the pre-installation groove 21 first, and when the pulley 2 rotates, it will naturally slide into the working groove 22 through the inclined surface of the pressure block 23. The buffer pad 151 absorbs the impact energy of the glass when the door is closed, and the drainage groove 16 drains the water that has entered the pulley groove 11 in time. The guide rail 3 is double-fixed by the buckle 18 and the expansion groove 171 to achieve a stable connection in both the axial and circumferential directions.

[0035] The above embodiments are merely one preferred embodiment of the present utility model. Ordinary changes and substitutions made by those skilled in the art within the scope of the present utility model's technical solution are all included within the protection scope of the present utility model.

Claims

1. A guide shoe for a glass lift, the guide shoe comprising a pulley and a pulley slot for placing the pulley, characterized in that: The guide seat is provided with at least two cable grooves that are connected to the pulley groove and allow the cable to pass through. The two cable grooves coincide with the tangent of the pulley, and an angle is formed between the two tangents that coincide with the cable grooves. The pulley groove is also provided with a blocking member corresponding to the number of cable grooves to prevent the cable that passes through the corresponding cable groove from falling off the pulley.

2. The guide seat for a window regulator according to claim 1, characterized in that: The blocking member is correspondingly installed at the point where the steel cable passes through the pulley, and the pulley is installed at the center of the pulley groove. The radial distance between the blocking member and the center of the pulley groove is greater than the outer diameter of the pulley.

3. The guide seat for a window regulator according to claim 1, characterized in that: It also includes a buffer groove, in which an elastic buffer pad is provided, the height of which is higher than the height of the guide seat and the pulley.

4. The guide seat for a window regulator according to claim 3, characterized in that: The number of steel cable grooves is two, and the buffer groove is disposed between the two steel cable grooves.

5. The guide seat for a glass lifter according to claim 1, characterized in that: The pulley includes a working groove that mates with the steel cable and a pre-installation groove that facilitates the insertion of the steel cable. The pre-installation groove is provided with a pressure block for pressing the steel cable into the working groove. The distance between the pre-installation groove and the bottom surface of the pulley groove is greater than the distance between the working groove and the bottom surface of the pulley groove.

6. The guide seat for a window regulator according to claim 5, characterized in that: A transition area is provided between the pre-loading groove and the working groove, and the pressure block is located at the center of the transition area. The top of the pressure block is on the same horizontal plane as the upper surface of the working groove.

7. The guide seat for a window regulator according to claim 1, characterized in that: It also includes a drainage trough for draining water accumulated in the pulley groove, the drainage trough being disposed at the edge of the pulley groove.

8. The guide seat for a window regulator according to claim 1, characterized in that: It also includes a guide rail that mates with the guide seat. The guide rail includes L-shaped side connecting rails located on both sides and arranged in an arc along the length of the guide rail, and a snap-fit ​​hole located at the center. The guide seat is provided with snap-fit ​​grooves that mate with the two side connecting rails of the guide rail and snap-fit ​​holes that mate with the snap-fit ​​holes.

9. The guide seat for a window regulator according to claim 8, characterized in that: The snap-fit ​​groove is provided with a flat expansion groove, which cooperates with the arc-shaped side connecting rail to expand and fix the guide rail.

10. The guide seat for a window regulator according to claim 1, characterized in that: The pulley is installed at the center of the pulley groove by riveting.

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