An automatic tensioning device for a steel wire rope of an automobile glass lifter and an automobile

Abstract

The utility model relates to the technical field of automobile glass lifter, specifically disclose a kind of steel wire rope automatic tensioner of automobile glass lifter and car, the steel wire rope automatic tensioner of this automobile glass lifter includes shell, non-return element, first elastic member and second elastic member.First elastic member is sleeved on steel wire rope, and the both ends of first elastic member are respectively connected with the inner wall of one end of steel wire rope and communicating cavity, so that the elongation of steel wire rope can be absorbed using first elastic member;Second elastic member is simultaneously sleeved on one end of non-return element, and the both ends of second elastic member are respectively connected with the inner wall of non-return element and accommodating cavity, so setting, the elongation caused by elastic deformation of steel wire rope can be absorbed and recovered, prevent the over-tensioning of the lifting system of frameless door glass to cause the premature damage of steel wire rope, and the tension of steel wire rope is kept at a suitable constant, to keep glass lifter normal function, prolong service life.

Description

Technical Field

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

[0002] Currently, the lifting system of frameless car windows has a relatively complex structure. In addition to lifting the glass, the lifting system also needs to support the short-sliding function. To achieve this function, the lifting system typically includes a tensioner to control the glass's short-sliding height. This tensioner absorbs excess elongation of the steel cable caused by wear or elastic deformation, keeping the total length of the steel cable at a constant value.

[0003] Existing automatic wire rope tensioning devices, after prolonged use, cannot compensate for the slack in the windowless window regulator caused by wear and tear, and the reduced tension due to the irreversible elongation of the wire rope. This makes it impossible for the windowless window regulator system of automobiles to move accurately and operate stably. Utility Model Content

[0004] The purpose of this utility model is to provide an automatic tensioning device for the steel wire rope of an automotive window regulator and an automotive device, so as to solve the problems that the existing automatic tensioning devices for the steel wire rope of automotive window regulators cannot compensate for the slack of the window regulator due to wear and the small tension force due to the irreversible elongation of the steel wire rope.

[0005] On one hand, this utility model provides an automatic tensioning device for the steel wire rope of an automotive window regulator. The automatic tensioning device includes: a housing having a receiving cavity, one end of which is provided with a limiting tooth; a check member, one end of which is located in the receiving cavity, the outer surface of the other end of which is provided with limiting grooves evenly distributed along the axial direction, the check member having a communicating cavity communicating with the receiving cavity, one end of the steel wire rope being located in the communicating cavity, and the other end of the steel wire rope extending out of the receiving cavity, the limiting grooves being used to cooperate with the limiting tooth to lock the steel wire rope after automatic tensioning; a first elastic member sleeved on the steel wire rope, both ends of which are respectively connected to one end of the steel wire rope and the inner wall of the communicating cavity; and a second elastic member sleeved on one end of the check member, both ends of which are respectively connected to the check member and the inner wall of the receiving cavity.

[0006] As an optional technical solution for the automatic tensioning device of the steel wire rope of the automotive window regulator, the connecting cavity includes a first cavity, a second cavity, and a third cavity connected in sequence. The diameter of the second cavity is smaller than the diameter of the first cavity and the diameter of the third cavity. The third cavity is connected to the receiving cavity. One end of the steel wire rope is located in the first cavity, and the other end of the steel wire rope passes through the second cavity, the third cavity, and the receiving cavity in sequence. The first elastic element is located in the first cavity, and one end of the first elastic element is connected to the inner wall of the first cavity.

[0007] As an optional technical solution for the automatic tensioning device of the steel wire rope of the automotive window regulator, the receiving cavity is provided with a guide post, the guide post has a through hole, the through hole penetrates the housing, and the guide post is inserted into the third cavity so that the through hole and the second cavity are connected.

[0008] As an optional technical solution for the automatic tensioning device of the steel wire rope of the automotive window regulator, the check element includes a first check section and a second check section connected in sequence. The first check section and at least part of the second check section are located in the receiving cavity. The second elastic element is sleeved on the first check section, and one end of the second elastic element is connected to the first check section. The outer surface of the second check section has the limiting groove.

[0009] As an optional technical solution for the automatic tensioning device of the steel wire rope of the automotive window regulator, the first check section includes a first section and a second section connected to each other, the diameter of the second section is smaller than the diameter of the first section, the first section and the second check section are connected, and one end of the second elastic member is connected to the end face of the first section facing the second section.

[0010] As an optional technical solution for the automatic tensioning device of the steel wire rope of the automotive window regulator, a guide slope is provided on one side of the groove wall of the limiting groove. The guide slope is adapted to the tooth wall of the limiting tooth located inside the housing and is used to drive the limiting tooth to expand circumferentially. A limiting surface is provided on the other side of the groove wall of the limiting groove.

[0011] As an optional technical solution for the automatic tensioning device of the steel wire rope of the automotive window regulator, one end of the housing is provided with a plurality of cantilever arms that extend axially, and the free end of the cantilever arm is provided with the limiting tooth extending toward the axis of the housing.

[0012] As an optional technical solution for the automatic tensioning device of the steel wire rope of the automotive window regulator, the automatic tensioning device of the steel wire rope of the automotive window regulator also includes a retainer, which is disposed on the outer wall of the cantilever.

[0013] As an optional technical solution for the automatic tensioning device of the steel wire rope of the automotive window regulator, both the first elastic element and the second elastic element are compression springs.

[0014] On the other hand, this utility model provides a car that includes an automatic tensioning device for the steel wire rope of the car window regulator as described in any of the above-mentioned solutions.

[0015] The beneficial effects of this utility model are as follows:

[0016] This utility model provides an automatic tensioning device for the steel wire rope of an automotive window regulator. The device includes a housing, a check valve, a first elastic element, and a second elastic element. The housing has a receiving cavity, and one end of the housing is provided with limiting teeth. The outer surface of the other end of the check valve is provided with limiting grooves evenly distributed along the axial direction. Using this automatic tensioning device, the first elastic element is fitted onto the steel wire rope, with both ends connected to one end of the steel wire rope and the inner wall of the receiving cavity, respectively. This allows the first elastic element to absorb the elongation of the steel wire rope. Simultaneously, the second elastic element is fitted onto one end of the check valve, with both ends connected to the check valve and the inner wall of the receiving cavity, respectively. This arrangement absorbs and restores the elongation of the steel wire rope caused by elastic deformation, preventing premature damage to the steel wire rope due to excessive tension in the frameless window regulator system. It also maintains the tension of the steel wire rope at a suitable value, thereby preserving the normal function of the window regulator and extending its service life. The automatic tensioning device for the steel wire rope of the car window regulator of this utility model effectively solves the problems of insufficient tension force due to wear-induced slack in the window regulator and irreversible elongation of the steel wire rope in the existing automatic tensioning device for car window regulator. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the automatic tensioning device for the steel wire rope of the car window regulator in this embodiment of the present invention;

[0018] Figure 2 This is an exploded view of the automatic tensioning device for the steel wire rope of the car window regulator in this embodiment of the present invention;

[0019] Figure 3 This is a cross-sectional view of the automatic tensioning device for the steel wire rope of the car window regulator in an embodiment of this utility model;

[0020] Figure 4 This is a schematic diagram of the automatic tensioning device for the steel wire rope of the car window regulator in the embodiment of this utility model, in the maximum elongation and tension state.

[0021] Figure 5This is a schematic diagram of the automatic tensioning device for the steel wire rope of the car window regulator in the embodiment of this utility model, in the maximum tension check state.

[0022] In the picture:

[0023] 1. Housing; 11. Receiving cavity; 12. Limiting tooth; 13. Guide post; 131. Through hole; 14. Cantilever;

[0024] 2. Check valve; 21. Limiting groove; 211. Guide slope; 212. Limiting surface; 22. Communicating cavity; 221. First cavity; 222. Second cavity; 223. Third cavity; 23. First check valve section; 231. First section; 232. Second section; 24. Second check valve section;

[0025] 3. First elastic element;

[0026] 4. Second elastic element;

[0027] 5. Holder. Detailed Implementation

[0028] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0029] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for 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. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Moreover, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and 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 utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of 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.

[0031] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0032] like Figures 1 to 5 As shown, this embodiment provides an automatic tensioning device for the steel wire rope of an automotive window regulator. The automatic tensioning device includes a housing 1, a check member 2, a first elastic member 3, and a second elastic member 4. The housing 1 has a receiving cavity 11, and one end of the housing 1 is provided with a limiting tooth 12. One end of the check member 2 is located in the receiving cavity 11, and the outer surface of the other end of the check member 2 is provided with limiting grooves 21 evenly distributed along the axial direction. The check member 2 has a communicating cavity 22 communicating with the receiving cavity 11. One end of the steel wire rope is located in the communicating cavity 22, and the other end of the steel wire rope extends out of the receiving cavity 11. The limiting groove 21 is used to cooperate with the limiting tooth 12 to lock the steel wire rope after automatic tensioning. The first elastic member 3 is sleeved on the steel wire rope, and both ends of the first elastic member 3 are respectively connected to one end of the steel wire rope and the inner wall of the communicating cavity 22. The second elastic member 4 is sleeved on one end of the check member 2, and both ends of the second elastic member 4 are respectively connected to the check member 2 and the inner wall of the receiving cavity 11.

[0033] The automatic tensioning device for the steel wire rope of the automotive window regulator provided by this utility model involves a first elastic element 3 fitted onto the steel wire rope, with both ends of the first elastic element 3 connected to one end of the steel wire rope and the inner wall of the connecting cavity 22, respectively. This allows the first elastic element 3 to absorb the elongation of the steel wire rope. Simultaneously, a second elastic element 4 is fitted onto one end of the check element 2, with both ends of the second elastic element 4 connected to the check element 2 and the inner wall of the receiving cavity 11, respectively. This arrangement absorbs and restores the elongation of the steel wire rope caused by elastic deformation, preventing premature damage to the steel wire rope due to excessive tension in the frameless door window lifting system, and maintaining the tension of the steel wire rope at a suitable constant value, thereby maintaining the normal function of the window regulator and extending its service life. The automatic tensioning device for the steel wire rope of the automotive window regulator of this utility model effectively solves the problems of existing automatic tensioning devices for automotive window regulators being unable to compensate for the slack in the window regulator due to wear and the insufficient tension due to irreversible elongation of the steel wire rope.

[0034] In some embodiments, the communicating cavity 22 includes a first cavity 221, a second cavity 222, and a third cavity 223 connected in sequence. The diameter of the second cavity 222 is smaller than the diameter of the first cavity 221 and the diameter of the third cavity 223. The third cavity 223 is connected to the receiving cavity 11. One end of the wire rope is placed inside the first cavity 221, and the other end of the wire rope passes sequentially through the second cavity 222, the third cavity 223, and the receiving cavity 11, finally exiting from the receiving cavity 11. A first elastic element 3 is located inside the first cavity 221, and one end of the first elastic element 3 is connected to the inner wall of the first cavity 221. This arrangement facilitates the fixation of the first elastic element 3 and also allows the first elastic element 3 to absorb the elongation of the wire rope.

[0035] In this embodiment, a guide post 13 is provided inside the receiving cavity 11. The guide post 13 has a through hole 131 that penetrates the housing 1. The guide post 13 is inserted into the third cavity 223, which facilitates the fixing of the check valve 2 and also allows the through hole 131 to connect with the second cavity 222. This arrangement makes it easy to pass the other end of the wire rope out of the receiving cavity 11.

[0036] In this embodiment, the check valve 2 includes a first check valve section 23 and a second check valve section 24 connected in sequence. The first check valve section 23 and at least a portion of the second check valve section 24 are located within the receiving cavity 11. A second elastic element 4 is sleeved on the first check valve section 23, with one end of the second elastic element 4 connected to the first check valve section 23. Thus, the second elastic element 4 absorbs and recovers the elongation of the steel wire rope caused by elastic deformation, preventing premature damage to the steel wire rope due to excessive tension in the frameless door window lifting system, and maintaining the tension of the steel wire rope at a suitable constant value, thereby maintaining the normal function of the window regulator and extending its service life. The outer surface of the second check valve section 24 has a limiting groove 21.

[0037] Furthermore, the first check valve segment 23 includes a first segment 231 and a second segment 232 that are connected to each other. The diameter of the second segment 232 is smaller than the diameter of the first segment 231. The first segment 231 and the second check valve segment 24 are connected, so that a stepped surface is formed between the first segment 231 and the second segment 232, thereby allowing one end of the second elastic member 4 to be connected to the end face of the first segment 231 facing the second segment 232.

[0038] In some embodiments, a guide slope 211 is provided on one side of the groove wall of the limiting groove 21. The guide slope 211 is adapted to the tooth wall of the limiting tooth 12 located inside the housing 1 and is used to drive the limiting tooth 12 to expand circumferentially, thereby realizing the cooperation between the limiting groove 21 and the limiting tooth 12. At the same time, a limiting surface 212 is provided on the other side of the groove wall of the limiting groove 21, thereby playing a limiting role for the check member 2.

[0039] In this embodiment, a plurality of cantilever arms 14 extending axially are uniformly provided at one end of the housing 1, wherein the free end of the cantilever arm 14 is provided with a limiting tooth 12 extending toward the axis of the housing 1.

[0040] Furthermore, the automatic tensioning device for the steel cable of the automotive window regulator also includes a retainer 5, wherein the retainer 5 is disposed on the outer wall of the cantilever 14. Figure 3 As shown, this is the state where the retainer 5 is not released, and it is also the initial stop-return state of the frameless door glass lifting system after the retainer 5 is released.

[0041] In this embodiment, both the first elastic element 3 and the second elastic element 4 are compression springs. Compared to metal springs, compression springs offer higher stability and reliability.

[0042] It should be noted that, as Figure 4 As shown, the free adjustment gap of the first elastic element 3 can be seen, which is the maximum elongation and tension state at this time; as Figure 5As shown, this represents the maximum tension check state. When the automatic wire rope tensioning device is installed in the car's window regulator system, and the retainer 5 is removed, if the wire rope is in a slack state, the automatic wire rope tensioning device will extend. It will first absorb the free adjustment gap of the first elastic element 3. If the wire rope is still in a slack state after this, the automatic wire rope tensioning device will undergo a skip-tooth extension movement (i.e., the engagement between the limiting tooth 12 and the limiting groove 21), and continue to absorb the slack of the wire rope through the second elastic element 5.

[0043] This embodiment also provides an automobile, including the automatic tensioning device for the steel wire rope of the automobile window regulator as described above. Using the automobile provided by this invention, a first elastic element 3 is sleeved on the steel wire rope, and both ends of the first elastic element 3 are respectively connected to one end of the steel wire rope and the inner wall of the connecting cavity 22. In this way, the first elastic element 3 can absorb the elongation of the steel wire rope. Simultaneously, a second elastic element 4 is sleeved on one end of the check element 2, and both ends of the second elastic element 4 are respectively connected to the check element 2 and the inner wall of the receiving cavity 11. This arrangement can absorb and recover the elongation of the steel wire rope caused by elastic deformation, preventing premature damage to the steel wire rope due to excessive tension in the frameless door window regulator system, and maintaining the tension of the steel wire rope at a suitable constant value, thereby maintaining the normal function of the window regulator and extending its service life. The automobile using this invention effectively solves the problems of existing automatic tensioning devices for the steel wire rope of automobile window regulators being unable to compensate for the slack in the window regulator due to wear and the low tension due to irreversible elongation of the steel wire rope.

[0044] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An automatic tensioning device for the steel wire rope of an automotive window regulator, characterized in that, include: The housing (1) has a receiving cavity (11), and one end of the housing (1) is provided with a limiting tooth (12). Check valve (2), one end of the check valve (2) is located in the receiving cavity (11), and the outer surface of the other end of the check valve (2) is provided with a limiting groove (21) evenly distributed along the axial direction. The check valve (2) has a communicating cavity (22) communicating with the receiving cavity (11). One end of the wire rope is located in the communicating cavity (22), and the other end of the wire rope passes through the receiving cavity (11). The limiting groove (21) is used to cooperate with the limiting tooth (12) so that the wire rope is automatically tensioned and locked. The first elastic element (3) is sleeved on the wire rope, and the two ends of the first elastic element (3) are respectively connected to one end of the wire rope and the inner wall of the communicating cavity (22); The second elastic element (4) is sleeved on one end of the check element (2), and the two ends of the second elastic element (4) are respectively connected to the inner wall of the check element (2) and the receiving cavity (11).

2. The automatic tensioning device for the steel wire rope of the automotive window regulator according to claim 1, characterized in that, The connecting cavity (22) includes a first cavity (221), a second cavity (222), and a third cavity (223) connected in sequence. The diameter of the second cavity (222) is smaller than the diameter of the first cavity (221) and the diameter of the third cavity (223). The third cavity (223) is connected to the receiving cavity (11). One end of the wire rope is located in the first cavity (221), and the other end of the wire rope passes through the second cavity (222), the third cavity (223), and the receiving cavity (11) in sequence. The first elastic element (3) is located in the first cavity (221), and one end of the first elastic element (3) is connected to the inner wall of the first cavity (221).

3. The automatic tensioning device for the steel wire rope of the automotive window regulator according to claim 2, characterized in that, The receiving cavity (11) is provided with a guide post (13), the guide post (13) has a through hole (131), the through hole (131) penetrates the housing (1), and the guide post (13) is inserted into the third cavity (223) so that the through hole (131) and the second cavity (222) are connected.

4. The automatic tensioning device for the steel wire rope of the automotive window regulator according to claim 1, characterized in that, The check valve (2) includes a first check valve segment (23) and a second check valve segment (24) connected in sequence. The first check valve segment (23) and at least part of the second check valve segment (24) are located in the receiving cavity (11). The second elastic member (4) is sleeved on the first check valve segment (23), and one end of the second elastic member (4) is connected to the first check valve segment (23). The outer surface of the second check valve segment (24) has the limiting groove (21).

5. The automatic tensioning device for the steel wire rope of the automotive window regulator according to claim 4, characterized in that, The first check segment (23) includes a first segment (231) and a second segment (232) connected to each other. The diameter of the second segment (232) is smaller than the diameter of the first segment (231). The first segment (231) and the second check segment (24) are connected. One end of the second elastic member (4) is connected to the end face of the first segment (231) facing the second segment (232).

6. The automatic tensioning device for the steel wire rope of the automotive window regulator according to claim 1, characterized in that, The limiting groove (21) has a guide slope (211) on one side of the groove wall. The guide slope (211) is adapted to the tooth wall of the limiting tooth (12) located inside the housing (1) and is used to drive the limiting tooth (12) to expand circumferentially. The limiting groove (21) has a limiting surface (212) on the other side of the groove wall.

7. The automatic tensioning device for the steel wire rope of the automotive window regulator according to claim 1, characterized in that, One end of the housing (1) is uniformly provided with a plurality of cantilever (14) extending along the axial direction, and the free end of the cantilever (14) is provided with the limiting tooth (12) extending toward the axial direction of the housing (1).

8. The automatic tensioning device for the steel wire rope of the automotive window regulator according to claim 7, characterized in that, The automatic tensioning device for the steel wire rope of the car window regulator also includes a retainer (5), which is disposed on the outer wall of the cantilever (14).

9. The automatic tensioning device for the steel wire rope of an automotive window regulator according to any one of claims 1-8, characterized in that, Both the first elastic element (3) and the second elastic element (4) are compression springs.

10. A car, characterized in that, The automatic tensioning device for the steel wire rope of the automotive window regulator as described in any one of claims 1-9.

Images