An automatic tensioning device for steel wire ropes of automotive window regulators

Abstract

This utility model relates to the field of vehicle technology, and more particularly to an automatic tensioning device for the steel wire rope of an automotive window regulator. A tensioning body is slidably disposed within a housing. One end of the steel wire rope passing through the housing is connected to the tensioning body. A first check tooth is provided on the outer wall of the tensioning body. A check element is slidably disposed on the inner wall of the housing, and the check element is provided with a second check tooth. The housing is provided with a first inclined surface, and the check element is provided with a second inclined surface. The first inclined surface can abut against the second inclined surface, causing the second check tooth to retract inward and engage with the first check tooth. An elastic element is configured to always have a tendency to drive the tensioning body to move towards the other end of the housing. When the steel wire rope loosens, the elastic element can provide a thrust to the tensioning body, tightening the steel wire rope. When the steel wire rope continues to loosen against the elastic force, the first inclined surface abuts against the second inclined surface, causing the second check tooth to be subjected to a retracting force towards the first check tooth, causing the second check tooth to engage with the first check tooth, preventing the tensioning body from moving in the opposite direction and tightening the steel wire rope.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and in particular to an automatic tensioning device for the steel wire rope of an automotive window regulator. Background Technology

[0002] Automotive window regulators are door components used to raise and lower car windows. The steel cable is an indispensable and important part of the window regulator, serving as the carrier for transmitting the output force and displacement of the motor. During repeated stretching, the anti-return component inside the window regulator gradually wears down, reducing its anti-return effect and causing the steel cable to spring back. This leads to the steel cable gradually becoming loose, resulting in low transmission efficiency, slow response speed, and even problems such as the regulator getting stuck.

[0003] Especially for frameless doors, the window regulator needs to perform a short-short lowering action when opening / closing the door to prevent the glass from scratching / colliding with the exterior trim or sealing strips on the roof of the vehicle during the opening and closing process. If the steel cable becomes loose, it will cause the glass to break upon impact.

[0004] Therefore, there is an urgent need for an automatic tensioning device for the steel wire rope of automotive window regulators to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide an automatic tensioning device for the steel wire rope of an automotive window regulator, which can prevent the steel wire rope from springing back and keep the steel wire rope taut.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] An automatic tensioning device for a steel wire rope of an automotive window regulator includes: a housing, a tensioning body, a check valve, and an elastic element. The tensioning body is slidably disposed within the housing. One end of the steel wire rope passing through the housing is connected to the tensioning body. A first check valve tooth is provided on the outer wall of the tensioning body. The check valve tooth is slidably disposed on the inner wall of the housing and is provided with a second check valve tooth. The housing is provided with a first inclined surface, and the check valve tooth is provided with a second inclined surface. The first inclined surface can abut against the second inclined surface to cause the second check valve tooth to retract inward and engage with the first check valve tooth. The elastic element is configured to always have a tendency to drive the tensioning body to move towards the other end of the housing.

[0008] In a preferred embodiment of the above-mentioned automatic tensioning device for the steel wire rope of an automotive window regulator, the elastic element is a compression spring.

[0009] As a preferred technical solution of the above-mentioned automatic tensioning device for steel wire rope of automobile window regulator, the inner wall of the housing is provided with a first protrusion, and one end of the elastic element is sleeved on the first protrusion.

[0010] As a preferred technical solution of the above-mentioned automatic tensioning device for steel wire rope of automobile window regulator, the tensioning body is provided with a groove, and the other end of the elastic element abuts against the groove.

[0011] As a preferred technical solution of the above-mentioned automatic tensioning device for steel wire rope of automobile window regulator, the bottom of the groove is provided with a second protrusion, and the other end of the elastic element is sleeved on the second protrusion.

[0012] As a preferred technical solution of the above-mentioned automatic tensioning device for steel wire rope of automobile window regulator, the first boss is provided with a first through hole, the second boss is provided with a second through hole, and the steel wire rope passes through the first through hole and the second through hole in sequence.

[0013] As a preferred technical solution of the above-mentioned automatic tensioning device for the steel wire rope of the automotive window regulator, the automatic tensioning device for the steel wire rope of the automotive window regulator further includes a locking member, which is used to lock the housing and the tensioning body.

[0014] As a preferred technical solution of the above-mentioned automatic tensioning device for the steel wire rope of the automotive window regulator, the locking member can be simultaneously inserted into the housing and the tensioning body. The automatic tensioning device for the steel wire rope of the automotive window regulator also includes a pull ring, which is connected to the locking member.

[0015] As a preferred technical solution of the above-mentioned automatic tensioning device for steel wire rope of automotive window regulator, the locking member is provided with a relief groove, the locking member is inserted into the housing, the steel wire rope passes through the relief groove, and the tensioning body can abut against the groove wall of the relief groove.

[0016] As a preferred technical solution of the above-mentioned automatic tensioning device for steel wire rope of automobile window regulator, the cross-sectional shape of the housing is circular or rectangular.

[0017] The beneficial effects of this utility model are:

[0018] This utility model provides an automatic tensioning device for the steel wire rope of an automotive window regulator. The automatic tensioning device for the steel wire rope of an automotive window regulator includes: a housing, a tensioning body, a check valve, and an elastic element. The tensioning body is slidably disposed within the housing. One end of the steel wire rope passing through the housing is connected to the tensioning body. A first check valve tooth is provided on the outer wall of the tensioning body. The check valve tooth is slidably disposed on the inner wall of the housing and has a second check valve tooth. The housing has a first inclined surface, and the check valve tooth has a second inclined surface. The first inclined surface can abut against the second inclined surface, causing the second check valve tooth to retract inward and engage with the first check valve tooth. The elastic element is configured to always have a tendency to drive the tensioning body to move towards the other end of the housing. Compared to existing technologies, when the wire rope loosens, the elastic element can provide a thrust to the tensioning body, thus tightening the wire rope. When the wire rope continues to loosen against the elastic force, the first inclined surface abuts against the second inclined surface, causing the second check tooth to be subjected to a contraction force towards the first check tooth, resulting in the second check tooth meshing with the first check tooth. Even if the second and first check teeth wear down, they can still mesh tightly under the action of compressive force, preventing the tensioning body from moving in the opposite direction and thus tightening the wire rope. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the automatic tensioning device for the steel wire rope of the car window regulator provided in Embodiment 1 of this utility model;

[0021] Figure 2 This is an exploded view of the automatic tensioning device for the steel wire rope of the car window regulator provided in Embodiment 1 of this utility model;

[0022] Figure 3 This is a structural cross-sectional view of the automatic tensioning device for the steel wire rope of the car window regulator provided in Embodiment 1 of this utility model;

[0023] Figure 4 This is an exploded view of the automatic tensioning device for the steel wire rope of the car window regulator provided in Embodiment 2 of this utility model;

[0024] Figure 5 This is a structural cross-sectional view of the automatic tensioning device for the steel wire rope of the car window regulator provided in Embodiment 2 of this utility model.

[0025] In the picture:

[0026] 1. Housing; 11. First inclined surface; 12. First boss; 13. First through hole; 2. Tensioning body; 21. First check tooth; 22. Groove; 23. Second boss; 24. Second through hole; 3. Check element; 31. Second check tooth; 32. Second inclined surface; 4. Elastic element; 5. Locking element; 51. Clearance groove; 6. Pull ring. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0028] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0031] like Figures 1 to 5As shown, this utility model provides an automatic tensioning device for the steel wire rope of an automotive window regulator. The automatic tensioning device for the steel wire rope of an automotive window regulator includes: a housing 1, a tensioning body 2, a check valve 3, and an elastic element 4.

[0032] Specifically, the tensioning body 2 is slidably disposed inside the housing 1, and one end of the wire rope passing through the housing 1 is connected to the tensioning body 2. The outer wall of the tensioning body 2 is provided with a first check tooth 21, and the check member 3 is slidably disposed on the inner wall of the housing 1. The check member 3 is provided with a second check tooth 31, the housing 1 is provided with a first inclined surface 11, and the check member 3 is provided with a second inclined surface 32. The first inclined surface 11 can abut against the second inclined surface 32 so that the second check tooth 31 retracts inward and engages with the first check tooth 21. The elastic member 4 is configured to always have the tendency to drive the tensioning body 2 to move toward the other end of the housing 1. Compared to existing technologies, when the wire rope loosens, the elastic element 4 can provide a thrust to the tensioning body 2, thus tightening the wire rope. When the wire rope continues to loosen against the elastic force, the first inclined surface 11 and the second inclined surface 32 abut against each other, causing the second check tooth 31 to be subjected to a contraction force towards the first check tooth 21, so that the second check tooth 31 and the first check tooth 21 mesh. Even if the second check tooth 31 and the first check tooth 21 wear, the second check tooth 31 and the first check tooth 21 can still mesh under the action of the compressive force, preventing the tensioning body from moving in the opposite direction and thus tightening the wire rope.

[0033] Optionally, a first boss 12 protrudes from the inner wall of the housing 1, and one end of the elastic member 4 is fitted onto the first boss 12. Specifically, the inner diameter of the elastic member 4 is the same as the outer diameter of the first boss 12. The elastic member 4 is fitted onto the outer periphery of the first boss 12, which can improve the stability of the elastic member 4, prevent the elastic member 4 from bending, and ensure that the elastic force of the elastic member 4 is along the axial direction. Further, the inner diameter of the elastic member 4 is slightly smaller than the outer diameter of the first boss 12, so that the elastic member 4 and the first boss 12 are interference-fitted, which can fix the end of the elastic member 4.

[0034] Optionally, the tensioning body 2 is provided with a groove 22, and the other end of the elastic element 4 abuts against the groove 22. Specifically, the inner diameter of the groove 22 is the same as the outer diameter of the elastic element 4. Inserting the elastic element 4 into the groove 22 can improve the stability of the elastic element 4, prevent the elastic element 4 from bending, and ensure that the elastic force of the elastic element 4 is along the axial direction. Further, the inner diameter of the groove 22 is slightly larger than the outer diameter of the elastic element 4, which facilitates the installation of the elastic element 4 and has a guiding function.

[0035] Optionally, a second boss 23 protrudes from the bottom of the groove 22, and the other end of the elastic member 4 is fitted onto the second boss 23. Specifically, the inner diameter of the elastic member 4 is the same as the outer diameter of the second boss 23. The elastic member 4 is fitted onto the outer periphery of the second boss 23. Through the clamping of the groove wall of the groove 22 and the outer wall of the second boss 23, the stability of the elastic member 4 can be further improved, preventing the elastic member 4 from bending and ensuring that the elastic force of the elastic member 4 is along the axial direction. Further, the inner diameter of the elastic member 4 is slightly smaller than the outer diameter of the second boss 23, so that the elastic member 4 and the second boss 23 are interference-fitted, which can fix the end of the elastic member 4. Further still, the elastic member 4 is a compression spring.

[0036] Optionally, the first boss 12 is provided with a first through hole 13, and the second boss 23 is provided with a second through hole 24. The wire rope passes through the first through hole 13 and the second through hole 24 in sequence. Specifically, the first through hole 13 is directly opposite the second through hole 24. The wire rope passes through the center of the elastic element 4 and is connected to the sleeve, which can balance the forces on the tensioning body 2 and the wire rope and ensure that the elastic force of the elastic element 4 is along the axial direction.

[0037] Optionally, the automatic tensioning device for the steel wire rope of the automotive window regulator also includes a locking element 5, which is used to lock the housing 1 and the tensioning body 2, thereby locking and fixing the housing 1 and the tensioning body 2 to prevent the steel wire rope from moving.

[0038] Furthermore, in Embodiment 1, the automatic tensioning device for the steel wire rope of the car window regulator also includes a pull ring 6, and the locking member 5 is a columnar structure. The pull ring 6 is connected to the locking rod to facilitate the removal of the locking member 5. The housing 1 is provided with a first locking hole, and the tensioning body 2 is provided with a second locking hole. The locking member 5 can be inserted into the first locking hole and the second locking hole at the same time.

[0039] Furthermore, in Embodiment 2, the locking member 5 is provided with a relief groove 51. The locking member 5 is inserted into the housing 1, and the wire rope passes through the relief groove 51. The tensioning body 2 can abut against the groove wall of the relief groove 51 to prevent the wire rope from moving.

[0040] Optionally, the cross-sectional shape of the housing 1 is circular or rectangular. Specifically, in Embodiment 1, the cross-sectional shape of the housing 1 is circular, and the corresponding tensioning body 2 and check valve 3 are also circular; in Embodiment 2, the cross-sectional shape of the housing 1 is rectangular, and the corresponding tensioning body 2 and check valve 3 are also rectangular, wherein the locking member 5 is a plate-like structure. Of course, in some other embodiments, the cross-sectional shapes of the housing 1, tensioning body 2, and check valve 3 are determined according to the actual situation, and the structure of the locking member 5 is determined according to the actual situation, which will not be elaborated here.

[0041] Furthermore, the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. An automatic tensioner for a steel cable of an automotive glass lifter, characterized by, The application relates to an automatic steel wire rope tensioning device of an automobile glass lifter, which comprises a shell (1), a tensioning body (2), a check member (3) and an elastic member (4), the tensioning body (2) is slidingly arranged in the shell (1), a steel wire rope is connected to the tensioning body (2) at one end of the shell (1), the outer wall of the tensioning body (2) is provided with first check teeth (21), the check member (3) is slidingly arranged on the inner wall of the shell (1), the check member (3) is provided with second check teeth (31), the shell (1) is provided with a first inclined surface (11), the check member (3) is provided with a second inclined surface (32), the first inclined surface (11) can abut against the second inclined surface (32) so that the second check teeth (31) are inwards retracted and engaged with the first check teeth (21), and the elastic member (4) is always configured to have a tendency to drive the tensioning body (2) to move to the other end of the shell (1). The elastic member (4) is a compression spring.

2. An automatic wire rope tensioner for an automotive glass lifter according to claim 1, wherein The inner wall of the shell (1) is provided with a first boss (12), and one end of the elastic member (4) is sleeved on the first boss (12).

3. An automatic tensioner for a steel cable of an automotive glass lifter according to claim 1, wherein The tensioning body (2) is provided with a groove (22), and the other end of the elastic member (4) is abutted in the groove (22).

4. An automatic wire rope tensioner for an automotive glass lifter according to claim 3, wherein The groove (22) is provided with a second boss (23) on the groove bottom, and the other end of the elastic member (4) is sleeved on the second boss (23).

5. An automatic wire rope tensioner for an automotive glass lifter according to claim 4, wherein The first boss (12) is provided with a first through hole (13), the second boss (23) is provided with a second through hole (24), and the steel wire rope passes through the first through hole (13) and the second through hole (24) in sequence.

6. An automatic wire rope tensioner for an automotive glass lifter according to claim 5, wherein The automatic steel wire rope tensioning device of the automobile glass lifter further comprises a locking member (5) for locking the shell (1) and the tensioning body (2).

7. An automatic tensioner for a steel cable of an automotive glass lifter according to claim 1, wherein The locking member (5) can be simultaneously arranged in the shell (1) and the tensioning body (2), and the automatic steel wire rope tensioning device of the automobile glass lifter further comprises a pull ring (6) connected to the locking member (5).

8. An automatic wire rope tensioner for an automotive glass lifter according to claim 7, wherein The locking member (5) is provided with an avoiding groove (51), the locking member (5) is inserted into the shell (1), the steel wire rope passes through the avoiding groove (51), and the tensioning body (2) can abut against the groove wall of the avoiding groove (51).

9. An automatic wire rope tensioner for an automotive glass lifter according to claim 7, wherein The cross section of the shell (1) is circular or rectangular.

10. An automatic tensioner for a steel cable of a glass lift of a vehicle according to any one of claims 1 to 9, characterized in that, ​

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