Tension adjustment device and window lifting device equipped with tension adjustment device

Abstract

To provide a tension adjustment device. [Solution] The tension adjustment device comprises an adjustment rod, a sleeve assembly member, and a spring. The adjustment rod is provided with a first contact portion and a ratchet strip, the ratchet strip having a plurality of gear grooves, each gear groove having a stopping surface and an inclined surface. The sleeve assembly member includes an outer cylinder and an inner cylinder. The outer wall of the outer cylinder is provided with a second contact portion, and the outer cylinder is provided with a stopper, the stopper having an elastic arm and a hook portion. The stopping side of the hook portion abuts against the stopping surface and engages with one of the gear grooves. The spring is clamped between the first contact portion and the second contact portion and pre-pressurized. When the adjustment rod extends from the sleeve assembly member, the hook portion moves to another gear groove, the stopping side abuts against the stopping surface of the gear groove into which the hook portion engages, and one end of the inner cylinder abuts against the opposite side of the stopping side of the hook portion.

Description

Technical Field

[0001] The present invention relates to a window lifting device, and more particularly to a tension regulator having an enhanced stopper structure and a window lifting device (tension regulator window lifting device having tension regulator) provided with the tension regulator.

Background Art

[0002] Window lifting devices are common equipment in vehicles. Window lifting devices pull the window up and down by means of a rope. As a result, vehicle occupants can operate the window lifting device inside the vehicle to open and close the window.

Summary of the Invention

Problems to be Solved by the Invention

[0003] However, in the prior art as described above, when the window lifting device is used for a certain period of time, the rope becomes loose, and the window cannot be lifted and lowered normally to be opened and closed, or the situation occurs that it does not operate smoothly.

[0004] For this reason, generally, a tension regulator is provided in the window lifting device, and the rope is tensioned by operating in combination with a cylinder body through which an adjustment rod is penetrated and a spring. Further, the relative positions of the cylinder body and the adjustment rod are fixed by engaging a stopper and a ratchet strip. However, when the window lifting device operates, since the force received by the rope is large, the life of the stopper is shortened and it is likely to break. When the stopper breaks, the tension regulator loses its function.

[0005] Therefore, the inventor of the present invention considered that the above-mentioned drawbacks can be improved, and as a result of repeated intensive studies, the present invention was proposed to effectively improve the above problems with a reasonable design.

[0006] In view of the circumstances of the prior art, the present invention aims to provide a tension adjustment device having an enhanced stopper structure. [Means for solving the problem]

[0007] To solve the above problems, a tension adjustment device according to one aspect of the present invention comprises an adjustment rod, a sleeve assembly member, and a spring. The adjustment rod is provided with a first contact portion and a ratchet strip, the ratchet strip having a plurality of gear grooves, and within each of the plurality of gear grooves, there is a stop surface and an inclined surface arranged to face in opposite directions. The sleeve assembly member is mounted so as to cover the adjustment rod and includes an outer cylinder and an inner cylinder provided inside the outer cylinder. The outer wall of the outer cylinder is provided with a second contact portion. The outer cylinder is provided with a stopper having an elastic arm and a hook portion provided on the elastic arm, the hook portion having a stopping side portion. The stopping side portion abuts against the stopping surface, and the hook portion engages with one of the plurality of gear grooves. The spring is mounted so as to cover the outer cylinder and is sandwiched between the first contact portion and the second contact portion and pre-pressurized. As the adjustment rod extends from the sleeve assembly, the hook portion moves from the inclined surface of one of the gear grooves to the other of the gear grooves it engages with, and the stopping side comes into contact with the stopping surface of one of the gear grooves with which the hook portion engages, and one end of the inner cylinder abuts against the opposite portion of the stopping side of the hook portion.

[0008] According to one aspect of the present invention, the adjustment rod has an engagement slot extending along the circumferential direction of the adjustment rod, and the outer cylinder is provided with an engagement projection. The engagement projection is receptacleable into the engagement slot, and by engaging the engagement projection into the engagement slot, the adjustment rod and the sleeve assembly member are fixed in the longitudinal direction of the sleeve assembly member. The engagement slot has an opening, and when the engagement projection disengages from the engagement slot through the opening, the adjustment rod and the sleeve assembly member become movable relative to each other.

[0009] According to one aspect of the present invention, the opening is located at one end of the engagement slot.

[0010] According to one aspect of the present invention, the opening is positioned such that the direction of the opening is aligned with the longitudinal direction of the adjustment rod.

[0011] According to one aspect of the present invention, the opening is positioned such that the direction of the opening is aligned with the circumferential direction of the adjustment rod.

[0012] According to one aspect of the present invention, the inner cylinder is mounted so as to cover the adjustment rod.

[0013] According to one aspect of the present invention, a ratchet strip is recessed in the outer wall of an adjustment rod, and a mounting surface is provided on the outer wall of the adjustment rod. The mounting surface extends parallel to the longitudinal direction of the ratchet strip and extends beyond both ends of the ratchet strip. The adjustment rod is provided with a plurality of ratchet strips and a plurality of mounting surfaces, and the plurality of ratchet strips are arranged in an annular manner along the circumferential direction of the adjustment rod. One mounting surface is provided between one ratchet strip and an adjacent ratchet strip.

[0014] According to one aspect of the present invention, the stopper is integrally molded with the outer cylinder.

[0015] According to one aspect of the present invention, a protrusion is formed at one end of the adjustment rod, and the first contact portion is provided on the protrusion.

[0016] Another aspect of the present invention is a window lifting device. This device comprises an adjustment rod, an outer cylinder, a spring, and a drive device. The adjustment rod is provided with a first contact portion and a ratchet strip, the ratchet strip having a plurality of gear grooves, each of which has a stop surface and an inclined surface arranged in opposite directions. The outer cylinder is mounted to cover the adjustment rod and an inner cylinder provided inside the outer cylinder, and a second contact portion is provided on the outer wall of the outer cylinder. The outer cylinder is provided with a stopper having an elastic arm and a hook portion provided on the elastic arm, the hook portion having a stopping side portion. The stopping side portion abuts against the stopping surface, and the hook portion engages with one of the plurality of gear grooves. The spring is mounted to cover the outer cylinder and is clamped and pre-pressurized between the first contact portion and the second contact portion. The drive device includes a housing in which the inner cylinder is installed, and the inner cylinder is inserted through the outer cylinder. As the adjustment rod extends from the outer cylinder, the hook portion moves to other gear grooves due to the inclined surface of the gear groove it engages with, the stopping portion comes into contact with the stopping surface of the gear groove with which the hook portion engages, and one end of the inner cylinder abuts against the opposite portion of the stopping portion of the hook portion.

[0017] According to one aspect of the present invention, the adjustment rod has an engagement slot extending along the circumferential direction of the adjustment rod, and the outer cylinder is provided with an engagement projection. The engagement projection can engage with the engagement slot, and by engaging the engagement projection with the engagement slot, the adjustment rod and the outer cylinder are fixed in the longitudinal direction of the outer cylinder.

[0018] According to one aspect of the present invention, the engagement slot has an opening, and when the engagement projection disengages from the engagement slot by the opening, the adjustment rod and the outer cylinder become movable relative to each other.

[0019] According to one aspect of the present invention, the opening is located at one end of the engagement slot.

[0020] According to one aspect of the present invention, the opening is positioned such that the direction of the opening is aligned with the longitudinal direction of the adjustment rod.

[0021] According to one aspect of the present invention, the opening is arranged such that the opening direction of the opening is along the circumferential direction of the adjustment rod.

[0022] According to one aspect of the present invention, the inner cylinder is mounted so as to cover the adjustment rod.

[0023] According to one aspect of the present invention, the ratchet strip is recessed in the outer wall of the adjustment rod, and a mounting surface is provided on the outer wall of the adjustment rod. The mounting surface extends parallel to the longitudinal direction of the ratchet strip and extends beyond both ends of the ratchet strip. A plurality of ratchet strips and a plurality of mounting surfaces are provided on the adjustment rod, and the plurality of ratchet strips are arranged annularly along the circumferential direction of the adjustment rod. One mounting surface is arranged between one ratchet strip and another adjacent ratchet strip.

[0024] According to one aspect of the present invention, the stopper is integrally formed with the outer cylinder.

[0025] According to one aspect of the present invention, a convex portion is formed at one end of the adjustment rod, and the first contact portion is provided on the convex portion.

[0026] According to one aspect of the present invention, the inner cylinder is integrally formed with the housing.

Advantages of the Invention

[0027] The tension adjusting device and the window lifting device according to the present invention tension the rope by combining the relative telescopic movement of the adjustment rod and the outer cylinder. A stopper is provided on the outer cylinder, and the relative position of the adjustment rod and the outer cylinder is fixed by a ratchet strip engaged with the adjustment rod. An inner cylinder is provided in the outer cylinder, and the stopper is supported to prevent the situation where the stopper receives force and breaks when the rope is pulled.

[0028] From the descriptions in the specification and drawings described below, at least the following matters will become clear.

Brief Description of the Drawings

[0029] [Figure 1] This is an exploded perspective view schematically showing a tension adjustment device according to the first embodiment of the present invention. [Figure 2] This is a schematic perspective view of a tension adjustment device according to the first embodiment of the present invention. [Figure 3] This is a longitudinal cross-sectional view schematically showing the installation of a tension adjustment device according to the first embodiment of the present invention. [Figure 4] This is a longitudinal cross-sectional view schematically showing the installation of a tension adjustment device according to the first embodiment of the present invention. [Figure 5] This figure schematically shows the installation of a tension adjustment device according to the first embodiment of the present invention. [Figure 6] This figure schematically shows the usage state of the tension adjustment device according to the first embodiment of the present invention. [Figure 7] This is a longitudinal cross-sectional view schematically showing the usage state of the tension adjustment device according to the first embodiment of the present invention. [Figure 8] This figure schematically shows the usage state of the tension adjustment device according to the first embodiment of the present invention. [Figure 9] This is a longitudinal cross-sectional view schematically showing the usage state of the tension adjustment device according to the first embodiment of the present invention. [Figure 10] This is a schematic longitudinal cross-sectional view showing a window lifting device according to a second embodiment of the present invention. [Figure 11] This is a schematic exploded perspective view showing a tension adjustment device according to a third embodiment of the present invention. [Figure 12] This is a longitudinal cross-sectional view showing a tension adjustment device according to a third embodiment of the present invention. [Modes for carrying out the invention]

[0030] The present invention will be described below through embodiments, but these embodiments are not intended to limit the invention as described in the claims. Furthermore, not all combinations of features described in the embodiments are necessarily essential to the solution of the invention.

[0031] (First embodiment) Figures 1 and 2 show a tension adjustment device according to the first embodiment of the present invention. In this embodiment, the tension adjustment device comprises an adjustment rod 100, a sleeve assembly member 200, and a spring 300.

[0032] The adjustment rod 100 is provided with a first contact portion 101 and a ratchet strip 102. In this embodiment, a protrusion 130 is formed at one end of the adjustment rod 100. Furthermore, the first contact portion 101 is provided on the protrusion 130. The ratchet strip 102 has a plurality of gear grooves 110, and within each gear groove 110, there is a stop surface 111 and an inclined surface 112 that are arranged facing in opposite directions. The stop surface 111 is substantially perpendicular to the axial direction of the adjustment rod 100, and the inclined surface 112 is inclined with respect to the axial direction of the adjustment rod 100 and has an obtuse outer angle. In this embodiment, the ratchet strip 102 is recessed into the outer wall of the adjustment rod 100, and a mounting surface 120 is provided on the outer wall of the adjustment rod 100. The mounting surface 120 extends parallel to the longitudinal direction of the ratchet strip 102 and extends beyond both ends of the ratchet strip 102. In this embodiment, the adjustment rod 100 is provided with a plurality of ratchet strips 102 and a plurality of mounting surfaces 120. These ratchet strips 102 are arranged in an annular shape along the circumferential direction of the adjustment rod 100. One mounting surface 120 is positioned between one ratchet strip 102 and an adjacent ratchet strip 102.

[0033] The sleeve assembly member 200 is mounted so as to cover the adjustment rod 100. Furthermore, the adjustment rod 100 and the sleeve assembly member 200 are movable relative to each other. The sleeve assembly member 200 comprises an outer cylinder 210 and an inner cylinder 240. Specifically, the inner cylinder 240 is provided inside the outer cylinder 210, and the inner cylinder 240 is mounted so as to cover the adjustment rod 100. A second contact portion 201 is provided on the outer wall of the outer cylinder 210, and a stopper 202 is also provided on the outer cylinder 210. In this embodiment, the stopper 202 is integrally molded with the outer cylinder 210. The stopper 202 has an elastic arm 220 and a hook portion 230 provided on the elastic arm 220.

[0034] The spring 300 is mounted so as to cover the outer cylinder 210, and is also held between the first contact portion 101 and the second contact portion 201, and is pre-pressurized.

[0035] The adjustment rod 100 has an engagement slot 103 extending along the circumferential direction of the adjustment rod 100, and the outer cylinder 210 is provided with an engagement projection 211. The engagement projection 211 can engage with the engagement slot 103, and by engaging the engagement projection 211 with the engagement slot 103, the adjustment rod 100 and the sleeve assembly member 200 are fixed in the longitudinal direction of the sleeve assembly member 200. In this embodiment, the engagement projection 211 has a convex columnar shape, and the engagement slot 103 has an opening 104. When the adjustment rod 100 rotates, the engagement projection 211 disengages from the engagement slot 103 by the opening 104, and the adjustment rod 100 and the sleeve assembly member 200 become movable relative to each other. In this embodiment, the opening 104 is located at one end of the engagement slot 103, and is positioned so that the opening direction of the opening 104 is along the longitudinal direction of the adjustment rod 100.

[0036] As shown in Figure 3, when installing the tension adjustment device, first position the hook portion 230 of each stopper 202 on the outer cylinder 210 so that it aligns with the corresponding mounting surface 120 of the adjustment rod 100. Next, attach the outer cylinder 210 so that it covers the adjustment rod 100. In the process of attaching the outer cylinder 210 so that it covers the adjustment rod 100, the stopper 202 is abutted against the corresponding mounting surface 120 and slid, engaging the engaging projection 211 of the outer cylinder 210 into the engaging slot 103, and fixing the outer cylinder 210 to the adjustment rod 100. The inner cylinder 240 is assembled to the outer cylinder 210 before attaching the outer cylinder 210 so that it covers the adjustment rod 100, but it may also be assembled to the outer cylinder 210 after attaching the outer cylinder 210 so that it covers the adjustment rod 100.

[0037] As shown in Figure 4, one end of the tension adjuster is connected to one end of the wiring tube 500. Specifically, one end of the wiring tube 500 is connected to the adjustment rod 100, and the wiring tube 500 is positioned to extend along the axial direction of the adjustment rod 100. The adjustment rod 100 has an axial jack 105 at one end connected to the wiring tube 500 for inserting the wiring tube 500 into the adjustment rod 100. A rope 510 is passed through the wiring tube 500, and the rope 510 passes through the wiring tube 500 and then through the adjustment rod 100 along the axial direction of the adjustment rod 100.

[0038] As shown in Figure 5, in this embodiment, a tension adjustment device is positioned between the drive unit 400 and the wiring tube 500 to tension the rope 510 that passes through the drive unit 400 and the wiring tube 500. In a preferred embodiment, the drive unit 400 is a rope drive unit. The drive unit 400 comprises a housing 410, which typically houses a drive wheel hub (not shown) and a motor (not shown) for driving the drive wheel hub to rotate. At the other end of the tension adjustment device, the drive unit 400 drives the rope to operate the window glass up and down, and a sleeve assembly member 200 abuts against the housing 410 of the drive unit 400. Specifically, the inner cylinder 240 has a bottom end 241 and a top end 242 opposite the bottom end 241, and the bottom end 241 of the inner cylinder 240 abuts against the housing 410 of the drive unit 400. The rope 510 passes through the wiring tube 500 and then through the adjustment rod 100 along its axial direction. The rope 510 then penetrates the housing 410 of the drive unit 400 and wraps around the drive wheel hub. In this embodiment, the sleeve assembly member 200 may further include a wire tube 250 through which the adjustment rod 100 is inserted axially at one end, and the other end of the wire tube 250 is inserted so as to penetrate the case body. The wire tube 250 guides the rope 510 to penetrate the housing 410 of the drive unit 400. The wire tube 250 is also integrally molded with the inner cylinder 240.

[0039] As shown in Figure 6, by rotating the adjustment rod 100, the engaging projection 211 moves to the position of the opening 104, which is located corresponding to the engaging slot 103, and at the same time, the hook portion 230 of the stopper 202 disengages from the corresponding mounting surface 120 and moves until it is aligned with the corresponding ratchet strip 102. The spring 300 is preloaded, and its elasticity pushes the adjustment rod 100 and the sleeve assembly member 200 to move relative to each other. In this way, the adjustment rod 100 extends from the sleeve assembly member 200.

[0040] As shown in Figure 7, the tension adjustment device is released, and the spring 300 pushes the adjustment rod 100 outward from the outer cylinder 210 along the axial direction of the outer cylinder 210. Simultaneously, the engaging projection 211 disengages from the engaging slot 103 by the opening 104, and the hook portion 230 of the stopper 202 engages with the corresponding ratchet strip 102. As the adjustment rod 100 and the sleeve assembly member 200 move relative to each other, the hook portion 230 becomes able to engage with one of the gear grooves 110. The hook portion 230 has a stopping side portion 231. The stopping side portion 231 abuts against the stopping surface 111 to prevent the adjustment rod 100 from being inserted into the sleeve assembly member 200, thereby fixing the relative positions of the adjustment rod 100 and the sleeve assembly member 200. The top end 242 of the inner cylinder 240 abuts against the opposite side of the stopping side 231 of the hook portion 230, so as to bear the force that the hook portion 230 receives when preventing the adjustment rod 100 from returning to its original position in the outer cylinder 210. This maintains the position of the hook portion 230 in the axial direction of the adjustment rod 100 and prevents the elastic arm 220 from bending due to excessive force.

[0041] As shown in Figure 1, in this embodiment, a positioning channel 213 is provided on the inner wall of the outer cylinder 210. The positioning channel 213 extends parallel to the longitudinal direction of the outer cylinder 210. A positioning rib 243 is provided on the outer wall of the inner cylinder 240, and the positioning rib 243 extends parallel to the longitudinal direction of the inner cylinder 240. The positioning rib 243 is inserted into the positioning channel 213 to prevent the outer cylinder 210 and the inner cylinder 240 from rotating relative to each other. When the adjustment rod 100 rotates, the bottom end 241 of the inner cylinder 240 abuts against the housing 410 of the drive unit 400 and becomes fixed. The positioning rib 243 and positioning channel 213 further prevent the outer cylinder 210 from being driven by the adjustment rod 100, ensuring that the engaging projection 211 disengages from the engaging slot 103 in accordance with the rotation of the adjustment rod 100.

[0042] As shown in Figures 8 and 9, when the rope 510 loosens, the spring 300 pushes the adjustment rod 100, causing it to extend from the sleeve assembly member 200. At this time, the hook portion 230 moves to another gear groove 110 via the inclined surface 112 of the gear groove 110 it is engaged with, and the stop portion 231 comes into contact with the stop surface 111 of the gear groove 110 with which the hook portion 230 is engaged. In this way, the relative positions of the adjustment rod 100 and the outer cylinder 210 are fixed again.

[0043] (Second example) Figure 10 shows a window lifting device according to a second embodiment of the present invention. The window lifting device according to the second embodiment of the present invention comprises at least an adjustment rod 100, an outer cylinder 210, a spring 300, and a drive device 400. In the lifting device, the drive device 400 is generally equipped with a device that drives the rope 510, such as a motor (not shown) or a drive wheel hub (not shown), and in combination with a slide rail (not shown) and a glass position limiting block (not shown), it achieves the function of raising and lowering the glass (not shown). In this embodiment, the structure of the adjustment rod 100, the outer cylinder 210, and the spring 300 is the same as that described in the first embodiment, and the explanation of the similarities is omitted.

[0044] A wiring tube 500 is connected to one end of the adjustment rod 100, and the wiring tube 500 is positioned to extend along the axial direction of the adjustment rod 100. Specifically, the adjustment rod 100 has an axial jack 105 at the end connected to the wiring tube 500 for inserting the wiring tube 500 into the adjustment rod 100. A rope 510 is passed through the wiring tube 500, and the rope 510 passes through the wiring tube 500 and then through the adjustment rod 100 along its axial direction.

[0045] The outer cylinder 210 is mounted so as to cover the adjustment rod 100, and furthermore, the adjustment rod 100 and the outer cylinder 210 are movable relative to each other. In this embodiment, the drive unit 400 includes a housing 410, which generally houses a motor and a drive wheel hub. An inner cylinder 420 is erected on the outer surface of the housing 410, and in this embodiment, the inner cylinder 420 is integrally molded with the housing 410. The outer cylinder 210 abuts against the housing 410 of the drive unit 400, the inner cylinder 420 is inserted through the outer cylinder 210, and furthermore, the inner cylinder 420 is mounted so as to cover the adjustment rod 100. The rope 510 passes through the adjustment rod 100 and then penetrates the housing 410 of the drive unit 400 and wraps around the drive wheel hub. In this embodiment, a wire tube 430 is erected on the outer surface of the housing 410, and furthermore, the wire tube 430 is located inside the inner cylinder 420 and is arranged coaxially with the inner cylinder 420. One end of the wire tube 430 is into which the adjustment rod 100 is inserted axially, and the other end of the wire tube 430 is inserted into the case body. The wire tube 430 is used to guide the rope 510 to penetrate the housing 410 of the drive device 400. The outer cylinder 210 is provided with an elastic arm 220 and a stopper 202 having a hook portion 230 provided on the elastic arm 220. The hook portion 230 can engage with one of the gear grooves 110 as it follows the relative movement of the adjustment rod 100 and the outer cylinder 210. The hook portion 230 has a stopping side portion 231, and the stopping side portion 231 abuts against the stopping surface 111 to prevent the adjustment rod 100 from being inserted into the outer cylinder 210, thereby fixing the relative position of the adjustment rod 100 and the outer cylinder 210 in the longitudinal direction of the outer cylinder 210.

[0046] The spring 300 is mounted so as to cover the outer cylinder 210 and is sandwiched and pre-pressurized between the structure of the adjustment rod 100 and the structure of the outer cylinder 210. When the spring 300 is pre-pressurized, its elasticity pushes the adjustment rod 100 and the outer cylinder 210 to move relative to each other, causing the adjustment rod 100 to extend from the outer cylinder 210. When the adjustment rod 100 extends from the outer cylinder 210, the hook portion 230 moves to another gear groove 110 via the inclined surface 112 of the gear groove 110 it is engaged with, and furthermore, the stop portion 231 comes into contact with the stop surface 111 of the gear groove 110 with which the hook portion 230 is engaged, thereby fixing the relative positions of the adjustment rod 100 and the outer cylinder 210 again. The inner cylinder 420 has a bottom end 421 and a top end 422 opposite to the bottom end 421. The bottom end 421 of the inner cylinder 420 is connected to the housing 410 of the drive unit 400, and the top end 422 of the inner cylinder 420 abuts against the opposite side of the stopping side 231 of the hook portion 230 so as to bear the force that the hook portion 230 receives when it prevents the adjustment rod 100 from returning to its original position toward the outer cylinder 210. This maintains the position of the hook portion 230 in the axial direction of the adjustment rod 100 and prevents the elastic arm 220 from bending due to excessive force.

[0047] (Third embodiment) Figures 11 to 12 show a tension adjustment device according to a third embodiment of the present invention. In this embodiment, the tension adjustment device comprises an adjustment rod 100, a sleeve assembly member 200, and a spring 300. The structures of the adjustment rod 100, the outer cylinder 210, and the spring 300 are substantially the same as in the first embodiment, and in this embodiment, the explanation of similar points will be omitted. In this embodiment, the adjustment rod 100 has an engagement slot 103a extending along the circumferential direction of the adjustment rod 100, and the outer cylinder 210 is provided with an engagement projection 211a. The engagement projection 211a can engage with the engagement slot 103a, and by engaging the engagement projection 211a with the engagement slot 103a, the adjustment rod 100 and the sleeve assembly member 200 are fixed in the longitudinal direction of the sleeve assembly member 200. In this embodiment, the elastic arm 220 of the engagement projection 211a has a hook shape, and the engagement slot 103a has an opening 104a. The opening 104a is located at one end of the engagement slot 103a, and is positioned such that the opening direction of the opening 104a is aligned with the circumferential direction of the adjustment rod 100. When the engagement projection 211a disengages from the engagement slot 103a by the opening 104a, the adjustment rod 100 and the sleeve assembly member 200 become movable relative to each other. In this embodiment, both ends of the engagement slot 103a have openings 104a, so that the adjustment rod 100 can be released regardless of the direction in which it rotates.

[0048] In detail, this tension adjustment device is designed so that the adjustment rod 100 and spring 300 are inserted into the outer cylinder 210, and then the adjustment rod 100 rotates by a certain angle so that the engaging projection 211a engages with the engaging slot 103a, and the outer cylinder 210 is temporarily locked in a temporary fixed position. After the wiring is installed, the device allows the engaging projection 211a to disengage from the engaging slot 103a and the outer cylinder 210 to disengage from its temporary position by continuing to rotate the adjustment rod 100, and the tension adjustment device has a tensioning function that responds to rope slack.

[0049] In this embodiment, a positioning rib 243 is provided on the outer wall of the inner cylinder 240. The positioning rib 243 extends parallel to the longitudinal direction of the inner cylinder 240 and is engaged with the inner wall of the outer cylinder 210 to prevent the outer cylinder 210 and the inner cylinder 240 from rotating relative to each other. When the adjustment rod 100 rotates, the bottom end 241 of the inner cylinder 240 abuts against the housing 410 of the drive unit 400 and can be fixed in place. The positioning rib 243 further prevents the outer cylinder 210 from being driven by the adjustment rod 100, allowing the engaging projection 211 to disengage from the engaging slot 103 in accordance with the rotation of the adjustment rod 100.

[0050] The tension adjustment device and window lifting device according to the present invention tension the rope 510 by combining the relative extension and retraction of the adjustment rod 100 and the outer cylinder 210. Furthermore, the outer cylinder 210 is provided with a stopper 202 that engages with the ratchet strip 102 of the adjustment rod 100 to fix the relative position of the adjustment rod 100 and the outer cylinder 210. The outer cylinder 210 is also provided with an inner cylinder 240 inside the outer cylinder 210 to support the stopper 202 so as to prevent the stopper 202 from being subjected to force and breaking when the rope 510 is pulled.

[0051] The adjustment rod 100 is provided with a circumferential engagement slot 103a that, in combination with the engagement projection 211 of the outer cylinder 210, fixes the adjustment rod 100 and the outer cylinder 210 in the axial direction to prevent them from operating. Furthermore, by rotating the outer cylinder 210, the engagement projection 211 retracts from the engagement slot 103 through the opening 104a of the engagement slot 103a, thus allowing operation. This makes installation easier.

[0052] The present invention is not limited to the embodiments described above, and various modifications are possible within the scope of the claims. Embodiments obtained by appropriately combining the technical means disclosed in each embodiment are also included in the technical scope of the present invention. [Explanation of symbols]

[0053] 100 Adjustment Rod 101 1st contact part 102 Ratchet Strips 103 Engagement slots 103a Engagement slot 104 Opening 104a opening 105 Axle Jack 110 gear grooves 111 Stopping surface 112 Slope 120 Mounting surface 130 Convex part 200 Sleeve Assembly Components 201 Second contact part 202 Stopper 210 Outer cylinder 211 Engagement protrusion 211a Engagement protrusion 213 Positioning Channels 220 Elastic Arm 230 Hook section 231 Stopping side 240 Inner cylinder 241 Bottom end 242 Apex 243 Positioning Rib 250 wire tubes 300 springs 400 Drive unit 410 Housing 420 Inner cylinder 421 Bottom end 422 Apex 430 Wire Tube 500 Wiring Tubes 510 Rope

Claims

1. An adjustment rod is provided with a ratchet strip having a first contact portion and a plurality of gear grooves, and within each of the plurality of gear grooves, a stop surface and an inclined surface are arranged to face in opposite directions from one another. A sleeve assembly member that is mounted so as to cover the adjustment rod and comprises an outer cylinder and an inner cylinder provided inside the outer cylinder, A second contact portion is provided on the outer wall of the outer cylinder. The outer cylinder is provided with a stopper. The stopper has an elastic arm and a hook portion provided on the elastic arm. The aforementioned hook portion has a stopping side portion, The stop side portion is in contact with the stop surface, The hook portion engages with one of the plurality of gear grooves, and the sleeve assembly member The spring is mounted so as to cover the outer cylinder and is held between the first contact portion and the second contact portion and pre-pressurized, A tension adjustment device characterized in that, when the adjustment rod extends from the sleeve assembly member, the hook portion moves from one of the plurality of gear grooves to another of the plurality of gear grooves on the inclined surface of the gear grooves to which it engages, the stop side portion abuts against one of the stop surfaces of the plurality of gear grooves with which the hook portion engages, and one end of the inner cylinder abuts against the opposite portion of the stop side portion of the hook portion.

2. The adjustment rod has an engagement slot that extends along the circumferential direction of the adjustment rod, The outer cylinder is provided with engaging projections, The tension adjustment device according to claim 1, characterized in that the engaging projection is receptacleable into the engaging slot, and by engaging the engaging projection into the engaging slot, the adjustment rod and the sleeve assembly member are fixed in the longitudinal direction of the sleeve assembly member.

3. The engagement slot has an opening, The tension adjustment device according to claim 2, characterized in that when the engaging projection disengages from the engaging slot by the opening, the adjustment rod and the sleeve assembly member become movable relative to each other.

4. The tension adjustment device according to claim 3, characterized in that the opening is located at one end of the engagement slot.

5. The tension adjustment device according to claim 3, characterized in that the opening is positioned such that the direction of the opening is aligned with the longitudinal direction of the adjustment rod.

6. The tension adjustment device according to claim 3, characterized in that the opening is positioned such that the direction of the opening is aligned with the circumferential direction of the adjustment rod.

7. The tension adjustment device according to claim 1, characterized in that the inner cylinder is mounted so as to cover the adjustment rod.

8. The ratchet strip is recessed in the outer wall of the adjustment rod, A mounting surface is provided on the outer wall of the adjustment rod. The tension adjustment device according to claim 1, characterized in that the mounting surface extends parallel to the longitudinal direction of the ratchet strip and extends beyond both ends of the ratchet strip.

9. The adjustment rod is provided with a plurality of ratchet strips and a plurality of mounting surfaces. The tension adjustment device according to claim 8, characterized in that the plurality of ratchet strips are arranged in annular shape along the circumferential direction of the adjustment rod, and one mounting surface is disposed between one of the ratchet strips and an adjacent ratchet strip.

10. The tension adjustment device according to claim 1, characterized in that the stopper is integrally molded with the outer cylinder.

11. A protrusion is formed at one end of the adjustment rod. The tension adjustment device according to claim 1, characterized in that the first contact portion is provided on the convex portion.

12. An adjustment rod is provided with a ratchet strip having a first contact portion and a plurality of gear grooves, and within the plurality of gear grooves, a stop surface and an inclined surface are arranged to face opposite directions from one another. An outer cylinder is mounted so as to cover the adjustment rod, and has a second contact portion on its outer wall and a stopper provided therein. The stopper has an elastic arm and a hook portion provided on the elastic arm. The aforementioned hook portion has a stopping side portion, The stop side portion is in contact with the stop surface, The hook portion engages with one of the plurality of gear grooves, and the outer cylinder and A spring is mounted so as to cover the outer cylinder, and is held between the first contact portion and the second contact portion and pre-pressurized. A drive device including a housing in which an inner cylinder is installed, The inner cylinder is inserted into the outer cylinder and comprises the drive device, A window lifting device characterized in that, when the adjustment rod extends from the outer cylinder, the hook portion moves from one of the plurality of gear grooves to another of the plurality of gear grooves on the inclined surface of the gear grooves to which it engages, and further, the stopping side portion abuts against one of the stopping surfaces of the plurality of gear grooves with which the hook portion engages, and one end of the inner cylinder abuts against the opposite portion of the stopping side portion of the hook portion.

13. The adjustment rod has an engagement slot that extends along the circumferential direction of the adjustment rod, The outer cylinder is provided with engaging projections. The window lifting device according to claim 12, characterized in that the engaging projection is receptacleable into the engaging slot, and by engaging the engaging projection into the engaging slot, the adjustment rod and the outer cylinder are fixed in the longitudinal direction of the outer cylinder.

14. The engagement slot has an opening, The window lifting device according to claim 13, characterized in that when the engaging projection disengages from the engaging slot by the opening, the adjusting rod and the outer cylinder become movable relative to each other.

15. The window lifting device according to claim 14, characterized in that the opening is located at one end of the engagement slot.

16. The window lifting device according to claim 14, characterized in that the opening is positioned such that the opening direction of the opening is aligned with the longitudinal direction of the adjustment rod.

17. The window lifting device according to claim 14, characterized in that the opening is arranged such that the opening direction of the opening is aligned with the circumferential direction of the adjustment rod.

18. The window lifting device according to claim 12, characterized in that the inner cylinder is mounted so as to cover the adjustment rod.

19. The ratchet strip is recessed in the outer wall of the adjustment rod, A mounting surface is provided on the outer wall of the adjustment rod. The window lifting device according to claim 12, characterized in that the mounting surface extends parallel to the longitudinal direction of the ratchet strip and extends beyond both ends of the ratchet strip.

20. The adjustment rod is provided with a plurality of ratchet strips and a plurality of mounting surfaces. The window lifting device according to claim 19, characterized in that the plurality of ratchet strips are arranged in an annular manner along the circumferential direction of the adjustment rod, and one mounting surface is provided between one of the ratchet strips and an adjacent ratchet strip.

21. The window lifting device according to claim 12, characterized in that the stopper is integrally molded with the outer cylinder.

22. A protrusion is formed at one end of the adjustment rod. The window lifting device according to claim 12, characterized in that the first contact portion is provided on the convex portion.

23. The window lifting device according to claim 12, characterized in that the inner cylinder is integrally molded with the housing.

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