Window lifter fixed guide seat

Abstract

A window regulator fixing guide seat includes a guide seat with a through hole for inserting a steel cable sheath. One side of the guide seat has an insertion groove leading to the through hole. The inner wall of the through hole has several expansion protrusions protruding from it. The steel cable is covered by a steel cable sheath, which passes through the insertion groove into the through hole. The inner walls of the expansion protrusions abut against the surface of the steel cable sheath, and the expansion protrusions cooperate with the outer surface of the sheath to form an expansion fit. The advantages of this invention are: the insertion groove design facilitates quick insertion of the steel cable into the through hole, and the expansion protrusions effectively limit lateral swaying of the steel cable during frequent raising and lowering, reducing the frequency of impact with the inner wall of the guide seat, thereby significantly reducing abnormal noise and improving cabin quietness and driving comfort.

Description

Technical Field

[0001] This utility model relates to a window regulator accessory, and more particularly to a window regulator fixed guide seat. Background Technology

[0002] In automotive power window systems, the fixed guide seat is a key component widely used to fix and guide the movement of the steel cable. This component is typically mounted on the door frame or the support of the lifting mechanism, and its core function is to ensure that the steel cable maintains a stable path during the raising and lowering of the window. In practice, the steel cable is inserted through an opening in the guide seat and slides within it during the raising or lowering operation: when the driver triggers the lifting switch, the motor drives the steel cable to move, and the guide seat, through its internal cavity, constrains the cable, preventing it from excessively bending or derailing, thus smoothly raising or lowering the window. This design not only simplifies the installation process but also enhances the reliability and durability of the system, and is widely used in various passenger and commercial vehicles. However, in existing technologies, a clearance fit is typically used between the opening of the fixed guide seat and the steel cable sheath to allow free displacement of the cable sheath.

[0003] While this gap-fit ​​design facilitates cable movement, it introduces a significant drawback: due to the gap between the opening and the cable sheath, the sheath is prone to swaying during frequent raising and lowering, frequently impacting the inner wall of the guide seat and producing noticeable abnormal noise. This noise not only disrupts the quiet environment inside the vehicle and affects driving comfort but may also raise questions about vehicle quality from users. Furthermore, continuous impacts accelerate the wear of the guide seat, shortening its lifespan and increasing maintenance costs. These issues highlight the shortcomings of existing technology and necessitate improvements to enhance overall performance. Utility Model Content

[0004] In view of the shortcomings of the prior art, this utility model provides a fixed guide seat for a glass lifter that reduces the noise of steel cable sheath swaying and extends the service life of the guide seat.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a fixed guide seat for a glass lifter, comprising a guide seat, wherein the guide seat is provided with a through hole for inserting a steel cable sheath, and an embedding groove leading to the through hole is provided on one side of the guide seat. A plurality of expansion protrusions protruding from the inner wall of the through hole are provided circumferentially, wherein the steel cable is covered with a steel cable sheath and the steel cable sheath passes through the through hole from the embedding groove, and the inner wall of the expansion protrusions abuts against the surface of the steel cable sheath, and the plurality of expansion protrusions cooperate with the outer surface of the steel cable sheath to form an expansion fit.

[0006] The beneficial effects of this utility model are as follows: the embedded groove design facilitates the quick insertion of the steel cable sheath into the insertion hole, while the tightening protrusion forms a tightening fit with the surface of the steel cable sheath, effectively limiting the lateral sway of the steel cable sheath during frequent lifting and lowering, reducing the frequency of its impact on the inner wall of the guide seat, thereby significantly reducing abnormal noise and improving the quietness of the vehicle interior and driving comfort; at the same time, it avoids the problem of guide seat wear caused by continuous impact, extending service life and reducing maintenance costs. As a preferred embodiment, the tightening protrusion can be made of elastic polymer material, and its structure includes a base and an outwardly protruding contact portion. When the steel cable sheath is inserted, the contact portion undergoes elastic deformation under the pressure of the steel cable sheath, generating a radial clamping force to keep the steel cable sheath stably centered; when the steel cable sheath moves, the contact portion only deforms locally, providing dynamic buffering and preventing hard collisions. As another preferred approach, the embedding groove is designed as an inclined inlet groove, with the groove wall gradually narrowing inward from the outer surface of the guide seat to the through hole. As the cable sheath slides in along the groove wall, it naturally aligns with the center position, reducing installation deviation. When the cable sheath wobbles, the guiding effect of the groove wall assists in its return to its original position, preventing it from falling out of the through hole area. These implementation schemes achieve reliable fixing and noise suppression of the cable sheath through structural optimization, improving overall performance stability.

[0007] Furthermore, several tightening protrusions are spaced apart on the inner wall of the through hole.

[0008] The gap design distributes the tightening protrusions evenly along the circumference of the inner wall of the perforation hole, forming a multi-point contact rather than a continuous ring structure. This reduces the total contact area between the outer surface of the cable sheath and the protrusions, preventing excessive compression of the cable sheath that could cause it to squeeze the cable inside, thus increasing the cable's movement resistance and reducing the risk of cable wear. Simultaneously, the gap allows the cable sheath to adaptively adjust its position within a small range, alleviating stress concentration and extending the service life of the cable sheath and guide seat. As a preferred method, the tightening protrusions are circular or hemispherical, evenly spaced circumferentially on the inner wall of the perforation hole. Each protrusion acts independently on the surface of the cable sheath, generating only localized point contact friction during cable raising and lowering. When the cable sheath sways, the gaps between the protrusions provide space for grease retention, reducing dry friction noise. As another preferred method, multiple groove areas are set on the inner wall of the through hole, and the expansion protrusion is only located on the raised part between the grooves. The groove depth is greater than the height of the protrusion. After the steel cable sheath is installed, the groove forms an airflow channel to dissipate heat and cool down, preventing material aging caused by frictional heat generation.

[0009] Furthermore, the tightening protrusion includes a lifting arc surface and a contact arc surface, and the tightening protrusion contacts the cable sheath only through the contact arc surface.

[0010] By separating the lifting arc surface and the contact arc surface through functional design, the contact arc surface is a small-area arc-shaped surface, with only this part directly contacting the cable sheath, further minimizing the contact area and reducing frictional resistance and wear. The lifting arc surface guides the cable sheath smoothly into the contact position, avoiding jamming during installation, improving assembly efficiency, and optimizing the stress distribution of the cable sheath, reducing deformation caused by excessive local stress. As a preferred approach, the lifting arc surface is designed as an outwardly expanding ramp structure, transitioning from the insertion hole to the contact arc surface. When the cable sheath is inserted, the ramp guides the cable to slide towards the center. The contact arc surface is a slightly concave arc surface with a curvature matching the outer diameter of the cable sheath, contacting the cable only in a line contact manner. When the cable moves, the contact arc surface provides a uniform pressure distribution, avoiding indentations caused by point contact. As another preferred method, a low-friction coating material, such as polytetrafluoroethylene, is embedded in the contact arc surface, while the lifting arc surface is a smooth stainless steel surface. When the cable sheath is inserted, it slides along the lifting arc surface to the contact arc surface. The coating reduces the coefficient of sliding friction, ensuring smooth movement of the cable with minimal noise.

[0011] Furthermore, the outer side of the guide seat is provided with several reinforcing ribs at intervals.

[0012] Reinforcing ribs are spaced apart on the outer surface of the guide seat, enhancing its overall structural strength and effectively resisting the shear force generated during cable sheath swaying. This prevents the guide seat from cracking or deforming due to repeated stress. Simultaneously, the reinforcing ribs distribute local loads, improving the guide seat's impact resistance, extending its service life, and ensuring the positional stability of the cable sheath insertion holes, reducing guiding deviations caused by guide seat deformation. As a preferred design, the reinforcing ribs are designed as longitudinal ribs arranged parallel to the guide seat axis, with uniform rib height and width. When the unrestricted portion of the cable sheath deviates, shear force acts on the outer wall of the guide seat, and the ribs disperse stress to the guide seat base by increasing the moment of inertia of the cross section. As another preferred design, the reinforcing ribs employ a cross-grid layout, with grid nodes connecting to the guide seat surface. Under the multidimensional shear force generated by the cable sheath swaying, the grid structure uniformly transmits the load, preventing stress concentration points from forming cracks.

[0013] Furthermore, it also includes a connecting seat, which is provided with a U-shaped groove and the opening depth of the U-shaped groove is greater than the diameter of the steel cable. One end of the U-shaped groove is connected to the through hole, and the other end of the U-shaped groove forms an opening for the steel cable to extend into the guide rail.

[0014] The depth of the U-shaped groove is greater than the diameter of the steel cable, providing sufficient space to confine the cable within the groove when it sways, preventing it from slipping out of the guide path. The groove connects the through-hole and the guide rail opening, ensuring smooth transition of the steel cable and reducing jamming. Simultaneously, the opening design facilitates the cable's insertion into the guide rail, maintaining the continuity of the lifting system and avoiding malfunctions or noise caused by cable detachment. As a preferred option, the inner wall of the U-shaped groove is designed as a smooth arc surface, with the radius of curvature at the bottom slightly larger than the radius of the steel cable. When the cable sways within the groove, the arc surface of the inner wall guides the cable back to its position without causing a hard impact. The groove depth is set to 1.2 times the diameter of the steel cable, providing a buffer margin. As another preferred option, the top of the sidewall of the U-shaped groove is provided with an inwardly tapering lip structure. The lip height is lower than the groove depth. When the steel cable sways, the lip limits its maximum displacement, preventing the cable from jumping out of the groove, while the flexible deformation of the lip absorbs impact energy.

[0015] Furthermore, the width of the opening is greater than the diameter of the steel cable.

[0016] The opening width is greater than the cable diameter to ensure that the cable does not contact the edge of the connector within the normal range of swaying, avoiding additional noise or vibration caused by collision. Simultaneously, the width allowance allows the cable to swing slightly without constraint, reducing frictional resistance, maintaining smooth lifting and lowering, and preventing the connector from being driven to sway and interfering with other components. As a preferred design, the opening is a flared, trumpet-shaped opening that gradually widens outwards from the U-shaped groove at a 30-degree angle. When the cable sways, the inner wall of the flared opening provides a guiding slope, allowing the cable to naturally center itself without touching the connector body. Alternatively, the opening edge is rounded, with a radius larger than the cable radius. When the cable approaches the edge, the rounded surface disperses the contact force, reducing stress concentration and noise generation.

[0017] Furthermore, it also includes a guide rail, a rivet hole is provided at the center of the connecting seat, a post is provided at the eccentric protruding position of the connecting seat, and an assembly hole and a connecting hole are provided on the guide rail corresponding to the rivet hole and the post, respectively. A wrapping part is provided on the outer edge of the connecting hole, and the height of the wrapping part protruding from the surface of the guide rail is approximately the same as the height of the post protruding from the surface of the guide rail.

[0018] By using a dual-point fixing method with rivet holes and inserts, combined with the enclosure of the inserts, stable installation of the connecting seat on the guide rail is achieved, preventing the connecting seat from shifting or loosening due to cable swaying. The height of the enclosure matches the insert, providing radial support, enhancing the overall structural rigidity, reducing vibration transmission, and ensuring reliable operation of the lifting system. As a preferred method, the enclosure is designed as a ring-shaped flange structure, surrounding the outer edge of the connecting hole. After the insert is inserted into the connecting hole, the inner wall of the flange tightly adheres to the side surface of the insert, restricting its radial movement. After the rivets are tightened through the rivet holes, the insert and rivets achieve torque balance. As another preferred method, a tapered head is provided at the end of the insert, and the inner wall of the enclosure has a matching inclined surface corresponding to the tapered head. During installation, the tapered head guides the insert to precise alignment, and the inclined surface of the enclosure provides a self-locking effect, preventing the insert from coming out under dynamic loads.

[0019] Furthermore, it also includes a skateboard, wherein a limiting end face is provided on the connecting seat facing the skateboard side, the limiting end face is wavy, and a soft contact member is provided on the skateboard corresponding to the limiting end face, the soft contact member cooperating with the limiting end face to limit the skateboard.

[0020] The wavy, limiting end face engages with the soft contact element. As the skateboard approaches the limit, the wavy structure first contacts the soft contact element at its highest point, reducing the initial contact area and minimizing collision noise. The soft contact element absorbs impact energy, cushioning the skateboard's movement, preventing hard impacts, improving comfort, and protecting the skateboard structure. As a preferred design, the wavy end face consists of multiple alternating peaks and valleys, with the peaks gradually increasing in height. The soft contact element is an elastic rubber block; when the skateboard moves to the limit, the rubber block first contacts the tips of the peaks, causing localized deformation to disperse the impact force. Alternatively, the soft contact element has grooved textures on its surface that mesh with the peaks of the wavy end face. Upon contact, the textures increase frictional damping, gradually slowing the skateboard and reducing noise.

[0021] Furthermore, the slide plate is provided with a fixing seat for locking the flexible contact element, and the distance between the end face of the fixing seat and the limiting end face is smaller than the distance between the end face of the flexible contact element and the limiting end face.

[0022] The spacing difference design ensures that the soft contact component contacts the limiting end face of the fixed seat before the fixed seat, providing initial cushioning. If the impact force is too large, the fixed seat will then rigidly limit the contact, preventing excessive deformation and damage to the soft contact component and extending its service life. Simultaneously, the dual limiting mechanism enhances safety and reliability. As a preferred method, the fixed seat has a U-shaped slot structure, with the soft contact component embedded in the slot and its end face protruding a certain distance from the fixed seat end face. When the slide moves, the soft contact component first compresses and deforms to absorb energy; when the deformation reaches its limit, the fixed seat end face contacts the limiting end face for rigid stopping. As another preferred method, the fixed seat end face is equipped with a wear-resistant pad, and the soft contact component is a replaceable silicone pad. The spacing difference is adjusted by the pad thickness, maintaining the cushioning function even after the silicone pad wears down over long-term use. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model; Figure 2 This is an enlarged schematic diagram of the guide seat portion in an embodiment of this utility model; Figure 3 This is a schematic diagram of the structure of the connector in an embodiment of the present utility model; Figure 4 This is an enlarged schematic diagram of the sliding plate limiting part in an embodiment of this utility model. Detailed Implementation

[0024] This utility model embodiment provides a fixed guide seat for a glass lifter, such as... Figure 1-4 As shown: The device includes a guide seat 11, which has a through hole 111 for threading a steel cable sheath 15. The steel cable is a flexible component used in the prior art to drive the glass lifting mechanism. The steel cable sheath 15 is fitted over the steel cable and passes through an insert groove 112 and is engaged within the through hole 111. One side of the guide seat 11 has an insert groove 112 leading to the through hole 111, facilitating the lateral engagement of the steel cable sheath 15 into the through hole 111.

[0025] A plurality of tightening protrusions 113 are circumferentially arranged on the inner wall of the through hole 111. The tightening protrusions 113 protrude from the inner wall of the through hole 111, and their inner walls abut against the surface of the steel cable sheath 15 to form a tightening fit, preventing the steel cable sheath 15 from impacting the inner wall of the through hole 111 and causing noise during movement. The plurality of tightening protrusions 113 are spaced apart to reduce the contact area with the steel cable sheath 15, avoiding excessive compression of the steel cable sheath 15, which would cause the steel cable inside the sheath to be squeezed and thus cause steel cable wear. Each tightening protrusion 113 includes a lifting arc surface 1131 and a contact arc surface 1132, and only the contact arc surface 1132 contacts the steel cable sheath 15, further reducing the contact area. A plurality of reinforcing ribs 114 are spaced apart on the outer side of the guide seat 11. The reinforcing ribs 114 are used to enhance the rigidity of the guide seat 11 and prevent the guide seat 11 from being damaged by shear force generated when the unrestricted part of the steel cable moves.

[0026] The fixed guide seat also includes a connecting seat 12, on which a U-shaped groove 121 is provided. The opening depth of the U-shaped groove 121 is greater than the diameter of the steel cable. One end is connected to the through hole 111, and the other end forms an opening 1211 to allow the steel cable to extend into the guide rail 13. The depth design of the U-shaped groove 121 ensures that the steel cable remains confined within the groove and does not come out when it sways. The width of the opening 1211 is greater than the diameter of the steel cable, preventing direct contact with the inner wall of the connecting seat 12 when the steel cable sways, thus preventing the connecting seat 12 from swaying and colliding with other components. A rivet hole 122 is provided at the center of the connecting seat 12, and an insert post 123 is provided at an eccentric position.

[0027] It also includes a guide rail 13, which is a component in the prior art that allows the steel cable to move within it. The guide rail 13 has an assembly hole 131 corresponding to the rivet hole 122 and a connection hole 132 corresponding to the insertion post 123. The outer edge of the connection hole 132 has a wrapping part 133 protruding out. The height of the wrapping part 133 protruding from the surface of the guide rail 13 is approximately the same as the height of the insertion post 123 protruding from the surface of the guide rail 13. The wrapping part 133 prevents the insertion post 123 from shifting. The rivet in the rivet hole 122 and the insertion post 123 cooperate to use two fixing points to stably fix the connecting seat 12 on the guide rail 13.

[0028] The fixed guide seat also includes a slide plate 14, which is a movable component connected to glass in the prior art. A limiting end face 124 is provided on the side of the connecting seat 12 facing the slide plate 14, and the limiting end face 124 is wavy. A flexible contact 141 is correspondingly provided on the slide plate 14. The flexible contact 141 is made of elastic material and cooperates with the limiting end face 124 to limit the movement of the slide plate 14. The wavy design reduces the contact area and noise during initial contact. A fixing seat 142 is also provided on the slide plate 14 to hold the flexible contact 141. The distance between the end face of the fixing seat 142 and the limiting end face 124 is smaller than the distance between the end face of the flexible contact 141 and the limiting end face 124. This allows the flexible contact 141 to make initial contact and buffer during the limiting process. If the slide plate 14 does not stop, the fixing seat 142 makes hard contact with the connecting seat 12 to limit the movement, preventing the flexible contact 141 from being excessively deformed and affecting its lifespan.

[0029] During assembly, the steel cable sheath 15 is inserted into the through hole 111 through the embedding groove 112, and the contact arc surface 1132 of the expansion protrusion 113 tightens the surface of the steel cable to prevent it from moving; the steel cable is guided into the guide rail 13 through the U-shaped groove 121, and the width and depth of the opening 1211 ensure stability during shaking. The connecting seat 12 is fixed to the guide rail 13 by rivets passing through the rivet hole 122 and the mounting hole 131, and the insert 123 is inserted into the connecting hole 132, and the wrapping part 133 stabilizes the position of the insert 123. When the slide plate 14 moves to the limit position, the soft contact part 141 contacts the wavy limit end face 124 to buffer and reduce noise; if the impact force is large, the fixed seat 142 makes hard contact to achieve the final limit.

[0030] 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 glass lifter fixed guide shoe comprising a guide shoe, a through hole for threading a wire sheath being provided on the guide shoe, characterized in that: One side of the guide seat is provided with an embedding groove leading to the through hole. The inner wall of the through hole is provided with a number of expansion protrusions protruding from the inner wall of the through hole. The steel cable is covered with a steel cable sheath, which passes through the embedding groove into the through hole. The inner wall of the expansion protrusions abuts against the surface of the steel cable sheath, and the number of expansion protrusions cooperate with the outer surface of the steel cable sheath to form an expansion fit.

2. The glass lifter fixed guide seat according to claim 1, characterized in that: Several tightening protrusions are spaced apart on the inner wall of the through hole.

3. The glass lifter fixed guide seat according to claim 2, characterized in that: The tightening protrusion includes a lifting arc surface and a contact arc surface, and the tightening protrusion contacts the cable sheath only through the contact arc surface.

4. The glass lifter fixed guide seat according to claim 1, characterized in that: The outer side of the guide seat is provided with several reinforcing ribs at intervals.

5. The glass lifter fixed guide seat according to claim 1, characterized in that: It also includes a connecting seat, which has a U-shaped groove with an opening depth greater than the diameter of the steel cable. One end of the U-shaped groove is connected to a through hole, and the other end of the U-shaped groove forms an opening that allows the steel cable to extend into the guide rail.

6. The glass lifter fixed guide seat according to claim 5, characterized in that: The width of the opening is greater than the diameter of the steel cable.

7. The glass lifter fixed guide seat according to claim 5, characterized in that: It also includes a guide rail, a rivet hole is provided at the center of the connecting seat, a post is provided at the eccentric protruding position of the connecting seat, and an assembly hole and a connecting hole are provided on the guide rail corresponding to the rivet hole and the post, respectively. A wrapping part is provided on the outer edge of the connecting hole, and the height of the wrapping part protruding from the surface of the guide rail is approximately the same as the height of the post protruding from the surface of the guide rail.

8. The glass lifter fixed guide seat according to claim 5, characterized in that: It also includes a skateboard, and the connecting seat is provided with a limiting end face facing the skateboard. The limiting end face is wavy. The skateboard is provided with a soft contact member corresponding to the limiting end face. The soft contact member cooperates with the limiting end face to limit the skateboard.

9. The glass lifter fixed guide seat according to claim 8, characterized in that: The slide plate is provided with a fixing seat for locking the flexible contact element. The distance between the end face of the fixing seat and the limiting end face is smaller than the distance between the end face of the flexible contact element and the limiting end face.

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