A glass lifter wire rope tensioner

Abstract

The present application relates to a wire rope tensioner for a glass lifter, which includes a housing, an adjusting rod, a spring and a mounting seat. One end of the housing is connected to the mounting seat, the adjusting rod is slidably connected to the inside of the housing, a threading hole for threading a wire rope is provided on the adjusting rod, the spring is arranged in the gap between the housing and the adjusting rod and is sleeved on the adjusting rod, a connecting ring is sleeved on the outer surface of the adjusting rod, one end face of the spring abuts against the connecting ring, and the other end face abuts against the mounting seat. When the wire rope is slack, the pressure on the spring is reduced, the spring pushes the adjusting rod to move, and the movement of the adjusting rod compensates for the slack of the wire rope, thereby achieving the tensioning effect of the tensioner, the housing provides protection for the spring, and the possibility of the spring being eroded by rain and dust is reduced, thereby effectively slowing down the possibility of the spring elastic force attenuation, and the present application has the effect of improving the stability of the tensioner.

Description

Technical Field

[0001] The present application relates to the technical field of automobile parts, and in particular to a steel wire tensioner for a glass lifter. Background Art

[0002] Existing cars generally use rope-type glass lifters. After the rope-type glass lifter has been used for a period of time, the steel wire rope will become loose, which will affect the micro-lifting and micro-lowering performance of the frameless glass lifter and cause the car window to be unable to be raised or lowered. In order to make the steel wire rope have sufficient tension for a long time and ensure the reliability of the micro-lifting and micro-lowering of the car door glass, the rope-type glass lifter is provided with a wire rope tensioner, which is a key component of the rope-type glass lifter.

[0003] A tensioner is disclosed in the related art, referring to Figure 1 The tensioner includes a spring 01, a shell 02, a screw 03 and a pawl nut 04. The shell 02 is installed on the window lifter motor base plate. One end of the screw 03 is installed in the shell 02 and can slide axially along the shell 02. The other end of the screw 03 is connected to the wire rope hose. When the wire rope is loose, the screw 03 withdraws from the shell under the thrust of the spring 01 and drives the pawl nut 04 to rotate. Under the action of the one-way locking of the pawl, the screw 03 cannot retreat, thereby achieving the purpose of automatically tensioning the wire rope.

[0004] However, the spring sleeve of the tensioner is arranged outside the shell, and the spring is easily corroded by rain and dust. After being corroded, the elastic force of the spring decays, so that the tension of the wire rope cannot be guaranteed, resulting in reduced tensioning stability of the tensioner, which is obviously insufficient. Utility Model Content

[0005] In order to improve the stability of the tensioner, the present application provides a glass lifter wire rope tensioner.

[0006] The present application provides a glass lifter wire rope tensioner adopts the following technical solution:

[0007] A glass lifter wire rope tensioner comprises a shell, an adjusting rod, a spring and a mounting seat, one end of the shell is connected to the mounting seat, the adjusting rod is slidably connected to the inside of the shell, a threading hole for threading a wire rope is provided on the adjusting rod, the spring is arranged in a gap between the shell and the adjusting rod and sleeved on the adjusting rod, a connecting ring is sleeved on the outer surface of the adjusting rod, one end face of the spring abuts against the connecting ring, and the other end face abuts against the mounting seat, and a limiting component is provided in the shell so that the adjusting rod can only move in a direction away from the mounting seat.

[0008] By adopting the above technical solution, when the wire rope is in a tensioned state, the spring is in a compressed state under the action of pressure. When the wire rope becomes loose after repeated use, the pressure on the spring is reduced, and the adjusting rod moves in a direction away from the mounting seat under the thrust of the spring. The movement of the adjusting rod compensates for the slack of the wire rope. At the same time, the adjusting rod will not retract into the shell under the restriction of the limiting component, thereby realizing the tensioning effect of the tensioner. At the same time, the shell provides protection for the spring, and the possibility of the spring being eroded by rain and dust is reduced, thereby effectively reducing the possibility of spring elastic force attenuation, thereby improving the stability of the tensioner.

[0009] Optionally, the limiting component includes a plurality of circles of pawls arranged on the adjusting rod, the plurality of circles of pawls are evenly distributed along the axial direction of the adjusting rod, adjacent pawls are enclosed to form a slot, and the top of the shell is provided with an elastic pawl that engages with the slot.

[0010] By adopting the above technical solution, when the adjusting rod moves outward, the adjusting rod causes the multiple elastic pawls on the shell to open. When the slot on the adjusting rod moves to the elastic pawl, the elastic pawl is locked in the slot under the elastic force of the elastic pawl. At the same time, the adjusting rod cannot be retracted into the shell under the unidirectional guiding action of the elastic pawl, so that the wire rope maintains the original tension. The limiting component has a compact structure and small size, which reduces the overall size of the tensioner and is beneficial to the design and layout of the glass lifter.

[0011] Optionally, the number of the elastic pawls is 4, and the elastic pawls are evenly and equidistantly distributed on the end surface of the shell away from the mounting seat.

[0012] By adopting the above technical solution, the four evenly distributed elastic pawls can make the pressing force on the adjustment rod more evenly distributed. At the same time, with the engagement of multiple elastic pawls with the card slots, the locking effect of the limiting assembly is improved, thereby further improving the stability of the tensioner.

[0013] Optionally, a guide hole is formed at one end of the adjusting rod close to the mounting seat, and a guide column slidably connected to the guide hole is provided on the mounting seat.

[0014] By adopting the above technical solution, under the sliding connection between the guide hole and the guide column, the spring pushes the adjustment rod to move more smoothly, so that the adjustment rod can more smoothly compensate for the slack of the wire rope, further improving the stability of the tensioner.

[0015] Optionally, the shell, the adjusting rod, the spring and the mounting seat are all made of plastic.

[0016] By adopting the above technical solution, the use of plastic material effectively reduces the production cost. At the same time, the plastic is light in weight, which is beneficial for installers to install the tensioner while meeting the requirements of lightweight vehicles.

[0017] Optionally, a mounting groove is provided on the mounting seat, a step that slidably cooperates with the mounting groove is provided at one end of the shell, and a connecting component is provided on the mounting seat, and the step is detachably connected to the mounting groove through the connecting component.

[0018] By adopting the above technical solution, the spring generates a pushing force on the mounting seat while generating a pushing force on the adjusting rod. A stable connection between the mounting seat and the shell is achieved through the connecting component, thereby reducing the influence of the spring elastic force on the mounting seat and improving the stability of the tensioner structure. At the same time, the setting of the connecting component also makes it convenient for workers to disassemble the shell to inspect the internal structure of the shell.

[0019] Optionally, the connecting assembly includes a plurality of elastic claws arranged on the mounting seat, and the plurality of elastic claws are slidably connected to the shell surface. When the bottom surface of the elastic claws abuts against the step surface, the step is connected to the mounting groove.

[0020] By adopting the above technical solution, when the shell needs to be installed, the worker needs to pry the elastic claw outward. When the step slides into the installation groove, the worker cancels the force on the elastic claw, and the elastic claw resets and automatically gets stuck on the end face of the step. At this time, the shell is clamped in the installation groove. When the shell needs to be inspected, the worker pries the elastic claw open again to make the elastic claw detach from the step, and then slides the shell off the mounting seat.

[0021] Optionally, the connecting assembly includes a pull rod, a return spring and an abutment block, the surfaces opposite to the step are provided with grooves, the mounting seat is provided with a clamping groove connected to the groove, the pull rod is slidably arranged in the groove, the abutment block is arranged at one end of the pull rod, the abutment block is slidably arranged in the groove and the clamping groove, the return spring is sleeved on the pull rod, one end of the return spring is connected to the side wall of the groove, and the other end is connected to the abutment block. In the initial state of the return spring, one end of the abutment block extends into the clamping groove and abuts against the step.

[0022] By adopting the above technical solution, when the shell needs to be installed, the worker pulls the pull rod to move the abutment block as a whole into the groove, then slides the step into the installation groove, releases the pull rod, and under the action of the reset spring, the abutment block is reset, and the step is abutted in the installation groove by two abutment blocks. At this time, the shell is installed on the mounting seat. When the shell needs to be disassembled, the worker pulls the pull rod outward to make the abutment surface of the abutment block separate from the step surface and embed it as a whole into the groove, and then slides the shell off the mounting seat.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The present application provides a housing, a spring and an adjusting rod. When the wire rope is slack, the pressure on the spring is reduced, and the spring pushes the adjusting rod to move. The movement of the adjusting rod compensates for the slack of the wire rope, thereby achieving the tensioning effect of the tensioner. The housing provides protection for the spring, and the possibility of the spring being eroded by rain and dust is reduced, thereby effectively slowing down the possibility of the spring elastic force attenuation and improving the stability of the tensioner.

[0025] 2. The present application sets a limiting component, which ensures the stability of the tensioning effect of the spring and the adjusting rod, reduces the possibility of the adjusting rod retracting into the housing and causing the wire rope to relax again, and improves the stability of the tensioner;

[0026] 3. The present application realizes a stable connection between the mounting seat and the shell by setting a connecting component, thereby reducing the influence of the spring force on the mounting seat and improving the stability of the tensioner structure. At the same time, the setting of the connecting component also makes it convenient for workers to disassemble the shell and inspect the internal structure of the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of a tensioner in the prior art.

[0028] Figure 2 It is a schematic diagram of the structure of this application.

[0029] Figure 3 It is a cross-sectional view of the shell in the embodiment of the present application.

[0030] Figure 4 It is an exploded view of the housing, the adjustment rod and the mounting seat of the present application.

[0031] Figure 5 It is a cross-sectional view of the mounting seat in the embodiment of the present application.

[0032] Figure 6 yes Figure 5 Enlarged view of point A in the middle.

[0033] Explanation of the reference numerals: 01, spring; 02, housing; 03, screw; 04, pawl nut; 1, housing; 101, opening; 102, baffle; 103, step; 2, adjusting rod; 21, connecting ring; 22, threading hole; 3, mounting seat; 31, mounting groove; 4, spring; 5, guide hole; 6, guide column; 7, limiting assembly; 71, pawl; 72, elastic pawl; 8, slot; 9, connecting assembly; 91, elastic clamping claw; 92, pull rod; 93, reset spring; 94, abutment block; 10, groove; 11, clamping groove. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-5 This application is described in further detail.

[0035] The embodiment of the present application discloses a wire rope tensioner for a glass lifter.

[0036] Example 1

[0037] Reference Figure 2 and Figure 3 A glass lifter wire rope tensioner comprises a housing 1, an adjusting rod 2 and a mounting seat 3. The housing 1 is mounted inside the mounting seat 3, the adjusting rod 2 is slidably connected inside the housing 1, a connecting ring 21 is fixedly connected to the outer surface of the adjusting rod 2, the connecting ring 21 is sleeved in the middle position of the adjusting rod 2, a threading hole 22 for the wire rope to be threaded is provided in the adjusting rod 2, a spring 4 is arranged in the gap between the housing 1 and the adjusting rod 2, the spring 4 is sleeved on the outer surface of the adjusting rod 2, when the wire rope is tensioned, one end face of the spring 4 is pressed tightly by the connecting ring 21, and the other end face is pressed tightly by the bottom surface of the mounting seat 3, a guide hole 5 is provided at one end of the adjusting rod 2 close to the mounting seat 3, a guide column 6 is fixedly connected to the axial position of the mounting seat 3, the guide column 6 is slidably connected in the guide hole 5, the axes of the spring 4, the adjusting rod 2 and the guide column 6 are all on the same straight line, and a limiting component 7 is provided in the housing 1 so that the adjusting rod 2 can only move in the direction away from the mounting seat 3.

[0038] When installing the tensioner, the wire rope is passed through the threading hole 22, and the wire rope is automatically in a tensioned state. At this time, the spring 4 is squeezed in the connecting ring 21 and the mounting seat 3, and the spring 4 is in a compressed state under the action of pressure. When the wire rope becomes loose after repeated use, the pressure on the spring 4 is reduced, and the reset of the spring 4 will generate a thrust on the adjusting rod 2. Under the sliding cooperation of the guide column 6 and the guide hole 5, the thrust generated by the spring 4 will make it easier to push the adjusting rod 2. The movement of the adjusting rod 2 compensates for the slack of the wire rope. At the same time, under the restriction of the limiting component 7, the adjusting rod 2 will not retract into the housing 1, thereby realizing the tensioning effect of the tensioner. The spring 4 is arranged inside the housing 1 to effectively reduce the possibility of erosion of the spring 4 by factors such as rain and dust, thereby effectively ensuring the normal operation of the spring 4, thereby improving the stability of the tensioner.

[0039] Reference Figure 3 and Figure 4The limiting component 7 includes a plurality of circles of pawls 71 sleeved on the outer surface of the adjusting rod 2, and the plurality of circles of pawls 71 are evenly distributed along the axial direction of the adjusting rod 2. The plurality of circles of pawls 71 are all arranged at the end of the adjusting rod 2 away from the mounting seat 3, and a card slot 8 is formed between adjacent pawls 71. A plurality of openings 101 extending along the axial direction are evenly distributed along the circumferential direction at the end of the shell 1 away from the mounting seat 3. In the present embodiment, the number of the openings 101 is four, and a baffle 102 is arranged between adjacent openings 101. An elastic pawl 72 is connected to the end of the baffle 102 away from the mounting seat 3, and a pawl section of the elastic pawl 72 extends toward the axial direction of the shell 1. When the card slot 8 on the adjusting rod 2 moves to the elastic pawl 72, the elastic pawl 72 is engaged in the card slot 8.

[0040] When the adjusting rod 2 moves outward, the adjusting rod 2 opens the multiple elastic pawls 72 on the housing 1. When the slot 8 on the adjusting rod 2 moves to the elastic pawl 72, the elastic pawl 72 is locked in the slot 8 under the elastic force of the elastic pawl 72. At the same time, the adjusting rod 2 cannot be retracted into the housing 1 under the unidirectional guiding action of the multiple-turn pawl 71, so that the wire rope maintains the original tension. At the same time, the limiting component 7 has a compact structure and a small size, which reduces the overall size of the tensioner, which is beneficial to the design and layout of the window lifter.

[0041] Reference Figure 3 and Figure 4 The housing 1, the adjusting rod 2, the spring 4 and the mounting seat 3 are all made of plastic material. The use of plastic material effectively reduces the production cost. At the same time, the plastic is light in weight, which is conducive to the installation of the tensioner by the installer while meeting the requirements of lightweight automobiles.

[0042] Reference Figure 3 and Figure 4 The spring 4 generates a thrust on the adjusting rod 2 and also generates a thrust on the mounting seat 3. In order to improve the stability between the mounting seat 3 and the shell 1, a step 103 is fixedly installed on the shell 1, and a mounting groove 31 for mounting the shell 1 is opened on the mounting seat 3. The mounting groove 31 slides with the step 103. A connecting component 9 is provided on the mounting seat 3. The step 103 is detachably connected to the mounting groove 31 through the connecting component 9. The connecting component 9 includes a plurality of elastic claws 91 arranged on the mounting seat 3. In this embodiment, the number of elastic claws 91 is 4 and they are evenly distributed on the outer peripheral side of the mounting seat 3 at equal distances. The plurality of elastic claws 91 slides with the outer surface of the shell 1. When the bottom surface of the elastic claw 91 abuts against the surface of the step 103 away from the mounting seat 3, the shell 1 is fixed in the mounting groove 31.

[0043] When the shell 1 needs to be installed, the worker needs to pry the elastic claw 91 outward. When the step 103 slides into the installation groove 31, the worker cancels the force on the elastic claw 91, and the elastic claw 91 resets and automatically gets stuck on the end face of the step 103. At this time, the shell 1 is clamped in the installation groove 31. When the shell 1 needs to be inspected, the worker pries the elastic claw 91 open again to disengage the elastic claw 91 from the step 103, and then slides the shell 1 out of the mounting seat 3. The stable connection between the mounting seat 3 and the shell 1 is achieved through the connecting component 9, thereby reducing the influence of the elastic force of the spring 4 on the mounting seat 3 and improving the stability of the tensioner structure. At the same time, the setting of the connecting component 9 also facilitates the workers to disassemble the shell 1 and inspect the internal structure of the shell 1.

[0044] The implementation principle of a glass lifter wire rope tensioner in the embodiment of the present application is as follows: when the tensioner is installed, the wire rope is passed through the threading hole 22, and the wire rope is automatically in a tensioned state. At this time, the spring 4 is squeezed in the connecting ring 21 and the mounting seat 3, and the spring 4 is in a compressed state under the action of pressure. When the wire rope becomes loose after repeated use, the pressure on the spring 4 is reduced, and the spring 4 is reset to push the adjusting rod 2 to move in a direction away from the mounting seat 3. When the adjusting rod 2 moves, multiple elastic pawls 72 open. When the slot 8 moves to the elastic pawl 72, the elastic pawl 72 is locked in the slot 8 under the elastic force of the elastic pawl 72, and the adjusting rod 2 will not retract. The movement of the adjusting rod 2 compensates for the slack of the wire rope, thereby realizing the tensioning effect of the tensioner. The spring 4 is arranged inside the housing 1 to effectively reduce the possibility of erosion of the spring 4 by factors such as rain and dust, thereby effectively ensuring the normal operation of the spring 4, thereby improving the stability of the tensioner.

[0045] Example 2

[0046] Reference Figure 5 and Figure 6 The difference between this embodiment and embodiment 1 is that the connecting assembly 9 includes a pull rod 92, a return spring 93 and abutment block 94. Grooves 10 are provided on the two opposite end surfaces of the step 103. A clamping groove 11 connected to the groove 10 is provided on the two opposite end surfaces of the mounting seat 3. The cross-sectional sizes of the groove 10 and the clamping groove 11 are the same. The pull rod 92 is slidably arranged in the groove 10. The abutment block 94 is fixedly installed at one end of the pull rod 92 close to the clamping groove 11. The abutment surface of the abutment block 94 is an arc surface, and the arc surface plays a guiding role in the installation of the shell 1. The abutment block 94 is slidably connected in the groove 10 and the clamping groove 11. The return spring 93 is sleeved on the outer surface of the pull rod 92. One end of the return spring 93 is fixedly connected to the inner wall of the groove 10, and the other end is fixedly connected to the outer surface of the pull rod 92. When the return spring 93 is in a natural state, the end of the abutment block 94 away from the pull rod 92 extends into the clamping groove 11 and abuts against the outer surface of the step 103.

[0047] The implementation principle of a glass lifter wire rope tensioner in an embodiment of the present application is as follows: when the shell 1 needs to be disassembled, the worker pulls the pull rod 92 outward to make the abutment surface of the abutment block 94 disengage from the surface of the step 103 and embed it as a whole into the groove 10, and then slides the shell 1 out from the mounting seat 3. When the shell 1 needs to be installed, the worker pulls the pull rod 92 to move the abutment block 94 as a whole into the inside of the groove 10, and then slides the step 103 into the mounting groove 31, releases the pull rod 92, and under the action of the reset spring 93, the abutment block 94 is reset, and the step 103 is abutted by two abutment blocks 94 in the mounting groove 31. At this time, the shell 1 is installed on the mounting seat 3.

[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A wire rope tensioner for a glass lift, characterized in that: The invention comprises a shell (1), an adjusting rod (2), a spring (4) and a mounting seat (3); one end of the shell (1) is connected to the mounting seat (3); the adjusting rod (2) is slidably connected to the inside of the shell (1); a threading hole (22) for threading a steel wire rope is provided on the adjusting rod (2); the spring (4) is arranged in the gap between the shell (1) and the adjusting rod (2) and is sleeved on the adjusting rod (2); a connecting ring (21) is sleeved on the outer surface of the adjusting rod (2); one end face of the spring (4) abuts against the connecting ring (21) and the other end face abuts against the mounting seat (3); a limiting component (7) is provided in the shell (1) so that the adjusting rod (2) can only move in a direction away from the mounting seat (3).

2. A glass lifter wire rope tensioner according to claim 1, characterized in that: The limiting assembly (7) comprises a plurality of circles of ratchet pawls (71) arranged on the adjusting rod (2), the plurality of circles of ratchet pawls (71) being evenly distributed along the axial direction of the adjusting rod (2), adjacent ratchet pawls (71) being enclosed to form a slot (8), and an elastic ratchet pawl (72) which is engaged with the slot (8) is provided at the top end of the housing (1).

3. A glass lifter wire rope tensioner according to claim 2, characterized in that: The number of the elastic pawls (72) is four, and the elastic pawls (72) are evenly distributed at equal distances on the end surface of the housing (1) away from the mounting seat (3).

4. The glass lifter wire rope tensioner according to claim 1, characterized in that: A guide hole (5) is provided at one end of the adjusting rod (2) close to the mounting seat (3), and a guide column (6) is provided on the mounting seat (3) and is slidably connected to the guide hole (5).

5. The glass lifter wire rope tensioner according to claim 1, characterized in that: The housing (1), the adjusting rod (2), the spring (4) and the mounting seat (3) are all made of plastic material.

6. The glass lifter wire rope tensioner according to claim 1, characterized in that: The mounting seat (3) is provided with a mounting groove (31), one end of the housing (1) is provided with a step (103) that slidably cooperates with the mounting groove (31), the mounting seat (3) is provided with a connecting component (9), and the step (103) is detachably connected to the mounting groove (31) via the connecting component (9).

7. A wire rope tensioner for a glass lifter according to claim 6, characterized in that: The connecting assembly (9) comprises a plurality of elastic claws (91) arranged on the mounting seat (3); the plurality of elastic claws (91) are slidably connected to the surface of the shell (1); when the bottom surface of the elastic claws (91) abuts against the surface of the step (103), the step (103) is connected to the mounting groove (31).

8. The glass lifter wire rope tensioner according to claim 6, characterized in that: The connecting assembly (9) comprises a pull rod (92), a return spring (93) and a contact block (94); the surfaces opposite to the step (103) are provided with grooves (10); the mounting seat (3) is provided with a snap-in groove (11) connected with the groove (10); the pull rod (92) is slidably arranged in the groove (10); the contact block (94) is arranged at one end of the pull rod (92); the contact block (94) is slidably arranged in the groove (10) and the snap-in groove (11); the return spring (93) is sleeved on the pull rod (92); one end of the return spring (93) is connected to the side wall of the groove (10), and the other end is connected to the contact block (94); in the initial state of the return spring (93), one end of the contact block (94) extends into the snap-in groove (11) and abuts against the step (103).

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