Integrated rope elastic device and wearable product

Abstract

The present invention discloses an integrated cord and strap tensioning device and a wearable article, wherein the integrated cord and strap tensioning device includes a base, an upper housing that cooperates with the base, a drive mechanism disposed on the base, and a winding shaft; the winding shaft includes a winding disc for winding a cord and a toothed disc fixedly connected to the winding disc; the drive mechanism drives the winding disc to rotate via the toothed disc to tighten or loosen the cord; the winding shaft is rotatably mounted in a cavity between the upper housing and the base; the winding disc is located between the toothed disc and the base, and a first passage connecting the interior and exterior of the cavity is disposed at a position of the upper housing near the base or on the base. The present invention reduces the volume of the cord and strap tensioning device's housing through the integrated design, facilitating its application in smaller spaces.

Description

Technical Field

[0001] The present invention relates to the technical field of automatic rope and belt tightening, in particular to an integrated rope and belt tightening device and a wearable product. Background Art

[0002] At present, with the improvement of people's living standards, daily necessities with rope elastic devices are very common, such as automatic headphone cord retractors, shoes with automatic tightening shoelaces, automatic tightening plastic bras, etc., which are convenient for people to use.

[0003] Because a lace tensioner is installed inside a shoe or piece of clothing, it must be compact. Conventional lace tensioners typically include an outer shell outside the drive mechanism, a shoelace spool mounted on top of the outer shell, and a spool housing for the spool. This double-shell design increases the overall thickness and weight of the lace tensioner. Summary of the Invention

[0004] The purpose of the present invention is to provide an integrated rope tensioning device to solve the deficiencies in the prior art. By integrating the design of the shell of the rope tensioning device, the volume can be reduced, which is conducive to the application of the rope tensioning device in a smaller space.

[0005] The present invention provides an integrated rope and belt elastic device, comprising a base, an upper shell matched with the base, a driving mechanism and a winding shaft arranged on the base;

[0006] The winding shaft comprises a winding disc for winding a rope and a toothed disc fixedly connected to the winding disc; the driving mechanism drives the winding disc to rotate through the toothed disc to tighten or loosen the rope;

[0007] The winding shaft is rotatably mounted in a cavity between the upper shell and the base; the winding disc is located between the toothed disc and the base, and a first passage communicating with the inside and outside of the cavity is provided at a position of the upper shell close to the base or on the base;

[0008] The base is further provided with a partition, which divides the cavity into an electric control cavity and a rope winding cavity, and the driving mechanism is arranged in the electric control cavity;

[0009] The toothed disc and the winding disc are arranged on both sides of the partition in the up and down directions, and the electric control chamber covers the top of the partition. The partition is provided with a through hole connecting the rope winding chamber and the electric control chamber. The connecting part between the toothed disc and the winding disc on the winding shaft is passed through the through hole, and a groove for placing a sealing ring is provided on the connecting part. The groove is opposite to the inner side wall of the through hole. The rope winding chamber is arranged between the partition and the base, and the rope winding chamber and the first channel are connected through the second channel.

[0010] As a further improvement of the present invention, the partition is configured to be clamped between the upper shell and the base, and a sealing member is provided between the partition and the base.

[0011] As a further improvement of the present invention, the sealing member is an elastomer layer that is insert-injected onto the side of the base facing the separator.

[0012] As a further improvement of the present invention, the partition is provided with a top plate and a first side plate and a second side plate distributed on both sides of the top plate and extending vertically downward along the top plate;

[0013] The perforation is provided on the top plate, two second channels are provided, and the two second channels are respectively provided on the first side plate and the second side plate;

[0014] The upper shell is provided with a top cover and a left side plate and a right side plate distributed on both sides of the top cover and extending vertically downward along the top cover. Two first channels are provided, and the two first channels are respectively provided on the left side plate and the right side plate.

[0015] As a further improvement of the present invention, the first side panel is in contact with the left side panel, and the second side panel is in contact with the right side panel.

[0016] As a further improvement of the present invention, a positioning column is provided on the base, and a positioning hole adapted to the positioning column is provided on the partition.

[0017] As a further improvement of the present invention, the upper shell and the base are connected together by laser welding or ultrasonic welding.

[0018] As a further improvement of the present invention, a shell seal is provided at the connection between the upper shell and the base.

[0019] As a further improvement of the present invention, the shell seal is an elastomer layer that is insert-molded on the base toward the upper shell side, and the elastomer layer is arranged on the inner side of the laser welding or ultrasonic welding portion.

[0020] As a further improvement of the present invention, the rope tensioning device further includes a switch key housing, and the upper housing is provided with a housing mounting groove adapted to the switch key housing.

[0021] As a further improvement of the present invention, the switch key housing is an elastomeric button that is inlaid and injection-molded in the housing mounting groove.

[0022] As a further improvement of the present invention, the driving mechanism includes a motor, a gearbox and a worm gear matched with the gear disc, and the motor drives the worm gear through the gearbox;

[0023] The upper shell is provided with a avoidance hole opposite to the gearbox, and a gearbox seal is provided between the hole wall of the avoidance hole and the gearbox.

[0024] As a further improvement of the present invention, the gearbox seal is an elastomer layer insert-injected on the upper shell.

[0025] As a further improvement of the present invention, the upper surface of the gearbox and the upper surface of the upper shell are located on the same plane.

[0026] As a further improvement of the present invention, a first support plate and a second support plate are symmetrically provided on both sides of the base to facilitate the installation and fixation of the rope elastic device.

[0027] A wearable article, characterized in that it includes the integrated rope elastic device described above, the wearable article having a flexible base and a rope arranged on the flexible base, and the rope elastic device cooperates with the rope to tighten or loosen the flexible base.

[0028] As a further improvement of the present invention, the wearable article is a shoe, the flexible base is a shoe body, the rope elastic device is provided on the shoe body, and cooperates with the rope to tighten or loosen the shoe body.

[0029] Compared with the prior art, the embodiment of the present invention rotatably mounts the winding shaft in the cavity formed by the upper shell and the base, so that the winding shaft and the drive mechanism are both covered inside the upper shell, so that the entire rope tensioning device uses only one complete shell; at the same time, the winding disc is set between the toothed disc and the base, and the winding disc is used to raise the toothed disc to facilitate the coordination with the worm in the drive mechanism. Compared with the prior art that uses a separate structure to raise the toothed disc, the structure is simpler. The thickness of the shell produced by superimposing two shells in the prior art is thinner, saving the production and use costs of the shell, while also improving the assembly efficiency of the entire rope tensioning device, and facilitating the integration of the overall structure, which can reduce the volume and facilitate the application of the rope tensioning device in a smaller space. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a three-dimensional diagram of the integrated rope and belt elastic device disclosed in an embodiment of the present invention;

[0031] Figure 2 This is an exploded view of the integrated rope and belt elastic device disclosed in an embodiment of the present invention;

[0032] Figure 3 This is a schematic diagram of the internal structure of the integrated rope and belt elastic device disclosed in an embodiment of the present invention;

[0033] Figure 4 is a cross-sectional view of the integrated rope elastic device disclosed in an embodiment of the present invention;

[0034] Figure 5 This is a schematic diagram of the installation structure of the worm in the integrated rope and belt tensioning device disclosed in an embodiment of the present invention;

[0035] Figure 6 This is a schematic diagram of the installation structure of the driving mechanism in the integrated rope and belt tensioning device disclosed in an embodiment of the present invention;

[0036] Figure 7 This is a first structural schematic diagram of the upper housing of the integrated rope and belt elastic device disclosed in an embodiment of the present invention;

[0037] Figure 8 This is a second structural schematic diagram of the upper housing of the integrated rope and belt elastic device disclosed in an embodiment of the present invention;

[0038] Figure 9 This is a structural schematic diagram of a base in an integrated rope and belt elastic device disclosed in an embodiment of the present invention;

[0039] Figure 10 This is a first structural schematic diagram of a separator in the integrated rope and belt elastic device disclosed in an embodiment of the present invention;

[0040] Figure 11 This is a second structural schematic diagram of the separator in the integrated rope and belt elastic device disclosed in an embodiment of the present invention;

[0041] Figure 12 This is an exploded view of the driving mechanism in the integrated rope and belt tensioning device disclosed in an embodiment of the present invention;

[0042] Figure 13 This is an exploded view of a gearbox in an integrated rope and belt tensioning device disclosed in an embodiment of the present invention;

[0043] Figure 14 This is a first structural schematic diagram of the outer housing of the gearbox in the integrated rope and belt tensioning device disclosed in an embodiment of the present invention;

[0044] Figure 15This is a second structural schematic diagram of the outer housing of the gearbox in the integrated rope and belt tensioning device disclosed in an embodiment of the present invention;

[0045] Figure 16 1 is a schematic structural diagram of a worm in an integrated rope and belt tensioning device disclosed in an embodiment of the present invention;

[0046] Figure 17 This is a schematic diagram of the installation structure when the worm in the integrated rope and belt tensioning device disclosed in an embodiment of the present invention is a right-handed worm;

[0047] Figure 18 This is a schematic diagram of the installation structure when the worm in the integrated rope and belt tensioning device disclosed in an embodiment of the present invention is a left-handed worm;

[0048] Figure 19 This is a first structural schematic diagram of the rotating shaft in the integrated rope and belt elastic device disclosed in an embodiment of the present invention;

[0049] Figure 20 This is a second structural schematic diagram of the rotating shaft in the integrated rope and belt tensioning device disclosed in an embodiment of the present invention;

[0050] Figure 21 This is a schematic structural diagram of a normally open switch in an integrated rope and belt tensioning device disclosed in an embodiment of the present invention;

[0051] Figure 22 This is a schematic structural diagram of a normally closed switch in the integrated rope and belt tensioning device disclosed in an embodiment of the present invention;

[0052] Figure 23 This is a schematic diagram of the installation structure of the switch unit in the integrated rope and belt tensioning device disclosed in an embodiment of the present invention;

[0053] Figure 24 This is a structural diagram of a rope and belt elastic device disclosed in an embodiment of the present utility model, in which two protrusions are provided on the rotating shaft;

[0054] Description of reference numerals: 1 - upper shell, 11 - first channel, 12 - top cover, 13 - left side plate, 14 - right side plate, 15 - shell mounting groove, 16 - avoidance hole, 17 - blocking portion, 18 - shaft limiting hole, 19 - limiting groove,

[0055] 2-base, 21-positioning column, 22-rotation limiting groove, 23-annular boss, 24-support platform, 25-first support plate, 26-second support plate,

[0056] 3-driving mechanism, 31-motor, 32-gearbox, 320-cross key pin,

[0057] 321-outer shell, 3211-gear ring, 3212-body, 3213-special-shaped part, 322-blocking ring,

[0058] 323 - planetary carrier, 324 - planetary gear, 325 - sun gear, 326 - gearbox base,

[0059] 33-worm, 331-hemispherical end, 332-limit ring, 333-keyway,

[0060] 4-winding shaft, 41-winding disc, 410-rope threading groove, 411-weight reduction hole, 42-toothed disc, 43-connecting part, 431-groove, 44-rotating shaft, 441-protrusion, 442-rotating boss,

[0061] 5-partitioning piece, 50-rope winding chamber, 51-perforation, 52-second passage, 521-inlet, 522-outlet, 53-top plate, 531-supporting boss, 532-avoidance groove, 54-first side plate, 55-second side plate, 56-positioning hole,

[0062] 6-seal, 7-switch key housing,

[0063] 8 - switch unit, 81 - first contact piece, 811 - first contact portion, 82 - second contact piece, 821 - second contact portion, 83 - pushing block, 84 - contact piece supporting block.

[0064] 9-Electronic control mechanism, 91-Power supply, 92-Circuit board. DETAILED DESCRIPTION

[0065] The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and are not to be construed as limiting the present invention.

[0066] Embodiments of the present invention: Figure 1 As shown in FIG. 20 , a rope tensioning device with high efficiency transmission includes a base 2, an upper shell 1 matched with the base 2, a driving mechanism 3 and a winding shaft 4 arranged on the base 2.

[0067] like Figure 19 and Figure 20 As shown, the winding shaft 4 includes a winding drum 41 for winding the rope, a toothed disc 42 fixedly connected to the winding drum 41, a connecting portion 43 connecting the winding drum 41 and the toothed disc 42, and a rotating shaft 44 provided on the winding drum 41. The driving mechanism 3 drives the winding drum 41 to rotate through the toothed disc 42 to tighten or loosen the rope, thereby realizing automatic tightening of the rope.

[0068] like Figure 12 and Figure 13As shown, the driving mechanism 3 includes a motor 31, a gearbox 32 and a worm 33. The motor 31 and the gearbox 32 are fixed on the base 2. The output end of the motor 31 is connected to the input end of the gearbox 32. The worm 33 is connected and fixed to the output shaft of the gearbox 32. The worm 33 engages with the gear disc 42 to drive the gear disc 42.

[0069] It is understood that the rope tensioning device also includes an electric control mechanism for controlling the driving mechanism 3, such as Figure 2 and Figure 3 As shown, the electric control mechanism includes a power supply 91 for supplying power to the motor 31 and a control unit for controlling the rotation of the motor 31. The control unit is disposed on a circuit board 92 and is electrically connected to the motor 31 and the power supply 91. It should be noted that in the embodiment of the present invention, the motor 31 is a motor capable of achieving forward and reverse rotation, and the control unit is used to control the rotation direction and angle of rotation of the motor 31. The forward or reverse rotation of the motor 31 can drive the forward or reverse rotation of the winding shaft 4, so that the rope can be wound or unwound on the winding drum 41.

[0070] In the embodiment of the present invention, motor 31 utilizes a coreless motor. Coreless motors utilize ironless rotors, resulting in a compact design that facilitates integrated structural design. Furthermore, coreless motors have low power loss, allowing them to be powered by a small power source. This further reduces the size and weight of the rope tensioner, improving its applicability.

[0071] like Figure 4 In this embodiment, the winding shaft 4 is rotatably installed in the cavity between the upper shell 1 and the base 2, and the winding disk 41 is located between the toothed disk 42 and the base 2. A first channel 11 connecting the inside and outside of the cavity is provided at a position of the upper shell 1 close to the base 2 or on the base 2.

[0072] like Figure 1 -3. First channel 11 is used to thread the rope, which enters the cavity from the outside through first channel 11. First channel 11 can be located on the upper shell 1 near the base 2, or directly on the base 2. The location of first channel 11 is determined by the specific structure and shape of the upper shell 1 and base 2.

[0073] Specifically, such as Figure 7-8. In the first case, a slot is provided on the upper shell 1, and the base 2 is sealed in the slot opening of the slot to form a cavity. In this case, the upper shell 1 is provided with a top cover 12 and a left side panel 13, a right side panel 14, a front side panel, and a rear side panel distributed along the periphery of the top cover 12 and perpendicular to the top cover 12. The left side panel 13 and the right side panel 14 are arranged opposite each other, the front side panel is an arc-shaped panel, and the rear side panel is positioned opposite the front side panel. The left side panel 13, the front side panel, the right side panel 14, and the rear side panel are connected end to end and form a slot with the top cover 12, with the base 2 sealed in the slot opening of the slot.

[0074] The first channel 11 is arranged on the upper shell 1 near the base 2 so that the first channel 11 is opposite to the winding shaft 4, so as to realize the winding of the rope and the winding shaft 4. Figure 8 There are two first channels 11 , which are respectively arranged on the left side plate 13 and the right side plate 14 .

[0075] In another embodiment, a groove body (not shown) can be provided on the base 2, and the upper shell 1 is sealed at the groove position of the groove body. In this case, the first channel 11 is provided on the base 2. Specifically, the base 2 has a bottom plate and side plates vertically fixed around the bottom plate. The side plates and the bottom plate form a groove body with an opening facing the upper shell 1. The upper shell 1 is sealed at the groove position of the groove body. In this case, the first channel 11 is provided on the side plates of the base 2.

[0076] The upper shell 1 is fixedly connected to the base 2. Specifically, the upper shell 1 and the base 2 are fixed by laser welding or ultrasonic welding. The connection and fixation by laser welding or ultrasonic welding can ensure the sealing of the connection and fixation. In order to avoid welding leaks during the welding process between the upper shell 1 and the base 2, which causes problems with the sealing between the upper shell 1 and the base 2, a shell seal is also provided at the connection between the upper shell 1 and the base 2. The provision of the shell seal can enhance the sealing between the upper shell 1 and the base 2. In this embodiment, the shell seal is an elastomer layer that is inlaid and injection-molded on the side of the base 2 facing the shell 1, and the elastomer layer is provided on the inner side of the laser welding or ultrasonic welding part. The material of the elastomer layer can be TPU, TPE, TPV, EVA, PU, ​​EPDM, NBR, SR, etc.

[0077] like Figure 4 、 19and 20, in the embodiment of the present invention, the first end of the winding shaft 4 is rotatably mounted on the upper shell 1, and the second end of the winding shaft 4 is rotatably mounted on the base 2. Specifically, the first end of the rotating shaft 44 is integrally formed on the winding reel 41, and the second end of the rotating shaft 44 is rotatably mounted on the upper shell 1. A rotating boss 442 is provided at the second end of the rotating shaft 44. The rotating boss 442 is integrally formed on the rotating shaft 44, and a rotating shaft limiting hole 18 that is compatible with the rotating boss 442 is provided on the inner side wall of the upper shell 1, and the rotating shaft limiting hole 18 is provided on the top cover 12. The rotating boss 442 is clearance-matched with the rotating shaft limiting hole 18 so that the rotating boss 442 can rotate within the rotating shaft limiting hole 18.

[0078] like Figure 9 The base 2 is provided with a rotation limit groove 22 adapted for the winding drum 41, and the winding drum 41 rotates within the rotation limit groove 22. The rotation limit groove 22 is actually a groove formed in the middle of the annular boss 23 provided on the base 2. The annular boss 23 limits the winding drum 41, allowing it to rotate within the rotation limit groove 22. The embodiment of the present invention, through the interaction of the rotation limit groove 22 and the shaft limit hole 18, enables the winding shaft 4 to be rotatably mounted between the upper housing 1 and the base 2.

[0079] In an embodiment of the present invention, in order to facilitate the winding of the rope and the winding drum 41, a rope threading groove 410 is provided on the winding drum 41, which passes through the winding drum 41 and extends in the radial direction of the winding drum 41. The rope threading groove 410 is opposite to the position of the first channel 11. The rope is passed through the first channel 11 and positioned in the rope threading groove 410, and the rope is wound on the winding drum 41 as the winding drum 41 rotates. Of course, the rope can also be fixed directly to the winding drum 41, but fixing the rope directly to the winding drum 41 is not convenient for adjusting the rope. The method of providing the rope threading groove 410 on the winding drum 41 can facilitate the adjustment of the rope position on the winding drum 41.

[0080] In order to further realize the lightweight of the rope elastic device, such as Figure 20 The winding drum 41 may also be provided with four weight-reducing holes 411, which are symmetrically distributed on both sides of the rope threading slot 410. The symmetrical arrangement of the weight-reducing holes 411 can prevent the winding drum 41 from deflecting during rotation.

[0081] In the embodiment of the present invention, the winding shaft 4 is rotatably mounted in the cavity formed by the upper shell 1 and the base 2. This allows the winding shaft 4 and the drive mechanism 3 to be simultaneously housed within the upper shell 1, allowing the entire rope tensioning device to utilize only one complete shell. Compared to the prior art structure in which a separate shell is provided for the winding shaft, this not only saves the production and use costs of the shell, but also improves the assembly efficiency of the entire rope tensioning device. It is also conducive to the integration of the overall structure, can reduce the volume, and facilitates the application of the rope tensioning device in a smaller space. At the same time, the integration of the shell facilitates sealing and waterproofing.

[0082] like Figure 3 and Figure 4 After the drive mechanism 3 is mounted and fixed on the base 2, due to the large size of the gearbox 32, there is a height difference between the output shaft of the gearbox 32 and the base 2. The worm 33 is connected and fixed to the output shaft of the gearbox 32, causing the worm 33 to be suspended after being installed and fixed. After the worm 33 is suspended, there is a certain gap between the worm 33 and the base 2. In the prior art, since the worm 33 is suspended, in order to make the gear plate 42 and the worm 33 fit together, the gear plate 42 needs to be raised to the same height as the worm 33. The structural arrangement of raising the gear plate 42 takes up a large amount of space, which is not conducive to the integrated design of the housing.

[0083] like Figure 4 In this embodiment of the present invention, the winding disc 41 is positioned between the toothed disc 42 and the base 2 . Specifically, the toothed disc 42 on the winding shaft 4 is positioned away from the base 2 . This is done by elevating the toothed disc 42 via the winding disc 41 to facilitate engagement with the suspended worm 33 . This also facilitates placement of the winding disc 41 . At this point, a gap exists between the worm 33 and the base 2 . The winding disc 41 is positioned opposite this gap, and the rope is threaded through this gap, effectively utilizing it and facilitating the integrated design of the rope tensioning device.

[0084] like Figure 2 -11, a partition 5 is also provided on the base 2, dividing the cavity into an electric control cavity and a rope winding cavity 50. The drive mechanism 3 is disposed in the electric control cavity. The rope winding cavity 50 is disposed between the partition 5 and the base 2, and the rope winding cavity 50 and the first channel 11 are connected via a second channel 52.

[0085] An electric control mechanism 9 is also provided in the electric control cavity. Due to the presence of the electric control mechanism 9, the components in the electric control cavity have high waterproof requirements. The cavity where the winding drum 41 is located needs to be connected to the outside world through the first channel 11 to facilitate the threading of the rope. Therefore, the space where the winding drum 41 is located cannot be sealed. If the cavity where the electric control mechanism 9 is located is the same cavity as the cavity where the winding drum 41 is located, it is difficult to effectively seal the electric control mechanism 9. In this embodiment of the present invention, the electric control cavity where the electric control mechanism 9 is located is separated by a partition plate 5 to facilitate the sealing and waterproofing of the electric control cavity.

[0086] To ensure the seal within the electrical control chamber, the sidewall of the separator 5 containing the second channel 52 is aligned with the sidewall of the upper housing 1 containing the first channel 11, so that the first channel 11 and the second channel 52 are directly connected. The rope entering the first channel 11 passes directly through the second channel 52 into the rope winding chamber 50, thereby isolating the connection between the first channel 11 and the electrical control chamber, which plays an important role in waterproofing the electrical control chamber. A sealant can also be placed between the two to further waterproof the seal.

[0087] In the practice of the present invention, Figure 4 The toothed disc 42 and the winding disc 41 are arranged on both sides of the partition 5 in the vertical direction, and the electric control chamber covers the upper part of the partition 5. The partition 5 is provided with a through hole 53 connecting the rope winding chamber 50 and the electric control chamber; the connecting portion 43 between the toothed disc 42 and the winding disc 41 on the winding shaft 4 is passed through the through hole 53.

[0088] This embodiment further separates the toothed disc 42 and the winding disc 41 of the winding shaft 4 into two different cavities by a separator 5. Since the toothed disc 42 is to be engaged with the driving mechanism 3, it is disposed in the electric control cavity where the driving mechanism 3 is located, while the winding disc 41 is disposed in the rope winding cavity 50. The winding shaft 4 is separated by the separator 5, so the winding shaft 4 must be passed through the separator 5, and a through hole 53 for the winding shaft 4 to pass through needs to be provided on the separator 5. Specifically, as shown in FIG. Figure 10 , the connection part 43 on the winding shaft 4 is provided at the position of the through hole 53. Since the existence of the through hole 53 destroys the integrity of the partition plate 5, when the electric control chamber is sealed, the position of the through hole 53 needs to be sealed. Therefore, a sealing ring is provided between the connection part 43 and the inner side wall of the through hole 53. Figure 20 In order to facilitate the installation and fixation of the sealing ring, a groove 431 for placing the sealing ring is provided on the connecting portion 43. The groove 431 is opposite to the inner side wall of the through hole 51 ( Figure 4 It should be noted that although a sealing ring is provided between the connecting portion 43 and the inner side wall of the through-hole 51 , the sealing ring does not hinder the rotation of the winding shaft 4 in the through-hole 51 .

[0089] In addition, separating the toothed disc 42 and the winding disc 41 in two different chambers can further prevent the rope from being wound around the toothed disc 42 during the process of being wound around the winding disc 41 .

[0090] Of course, in other embodiments, the winding drum 41 and toothed disc 42 of the winding shaft 4 can also be both disposed within the rope winding chamber 50, with the motor 31 and gearbox 32 of the drive mechanism 3 disposed within the electric control chamber. The worm 33 of the drive mechanism 3 penetrates the partition plate 5 and extends into the rope winding chamber to engage with the toothed disc 42. In this manner, the rope winding chamber 50 and the electric control chamber, separated by the partition plate 5, are connected via the hole penetrated by the worm 33. During the process of sealing and waterproofing the electric control chamber, only this hole needs to be sealed. However, this approach does not achieve separation between the winding drum 41 and toothed disc 42.

[0091] As a preferred solution, in the embodiment of the present invention, the separator 5 is a single component independent of the base 2. The separator 5 is arranged to be clamped between the upper shell 1 and the base 2. After the upper shell 1 and the base 2 are connected and fixed, the extrusion force generated by the upper shell 1 presses the separator 5 tightly against the base 2. Of course, in another embodiment, the separator 5 can also be integrally formed and fixed to the base 2. In order to ensure the sealing of the connection between the separator 5 and the base 2, such as Figure 4 A seal 6 is provided at the connection between the separator 5 and the base 2. In this embodiment, the seal 6 is an elastomer layer that is insert-molded onto the base 2 on the side facing the separator. The elastomer layer can be made of TPU, TPE, TPV, EVA, PU, ​​EPDM, NBR, SR, etc. Of course, if the separator 5 is integrally molded and attached to the base 2, the seal 6 can be eliminated.

[0092] like Figure 10 -11. In this embodiment of the present invention, the rope winding chamber 50 is a recessed groove formed in the separator 5, located on the side of the separator 5 opposite the base 2. Specifically, the separator 5 comprises a top plate 53 and a first side plate 54, a second side plate 55, a third side plate, and a fourth side plate perpendicularly connected to the top plate 53. The first side plate 54 and the second side plate 55 are positioned opposite each other, and are respectively disposed on opposite sides of the top plate 53. The first side plate 54, the second side plate 55, the third side plate, and the fourth side plate are sequentially connected. The rope winding chamber 50 is a cavity formed by the top plate 53, the first side plate 54, the second side plate 55, the third side plate, and the fourth side plate, with an opening facing the base 2. The electric control chamber extends above the separator 5, and a perforation 51 is provided in the top plate 53. Two second channels 52 are provided, one on the first side plate 54 and the other on the second side plate 55.

[0093] like Figure 4 and Figure 10A support boss 531 is also provided on the top plate 53. The support boss 531 is provided along the edge of the perforation 51. The support boss 531 supports the toothed disc 42. After the support boss 531 supports the toothed disc 42, the contact area between the toothed disc 42 and the support boss 531 is limited to the top surface of the support boss 531, thereby reducing the contact area between the toothed disc 42 and the top plate 53. The reduction in contact area can effectively reduce the friction between the two during rotation, thereby improving transmission efficiency. Correspondingly, an avoidance groove 532 can also be provided on the top plate 53. The avoidance groove 532 surrounds the outer edge of the support boss 531. The setting of the avoidance groove 532 prevents the plane where the support boss 531 is located from being higher than the plane where the top plate 53 is located, but still supports the toothed disc 42. Such a setting can effectively reduce the thickness of the entire housing.

[0094] In an embodiment of the present invention, the upper shell 1 is actually covered outside the partition 5, and the partition 5 is placed in a groove formed inside the upper shell 1. The first side panel 54 is in contact with the left side panel 13, and the second side panel 55 is in contact with the right side panel 14 so that the rope entering the first channel 11 can directly enter the rope winding cavity 50 through the second channel 52, thereby cutting off the connection channel between the first channel 11 and the electric control cavity, which plays an important role in the waterproof sealing inside the electric control cavity.

[0095] like Figure 9 and Figure 11 In order to facilitate the installation and positioning of the separator 5, a positioning column 21 is provided on the base 2, and a positioning hole 56 is provided on the separator 5 to match the positioning column 21. The installation and positioning of the separator 5 are conveniently achieved through the cooperation of the positioning column 21 and the positioning hole 56.

[0096] like Figure 4 The space formed between the outer wall of the rope winding drum 41 and the inner wall of the rope winding chamber 50 accommodates the rope wound around the winding drum 41. The size of this space determines the length of the wound rope, and thus the number of turns the winding shaft 4 can make during its rotation. This will be explained in detail below.

[0097] In the embodiment of the present invention, the partition 5 is installed on the base 2, and the rope winding chamber 50 formed by the partition 5 and the base 2 is directly connected to the outside world through the second channel 51 and the first channel 11. Although the partition 5 is provided with a through hole 51 for the connection portion 43 to pass through, the through hole is sealed by the setting of a sealing ring, and a sealing ring is also provided between the partition 5 and the base 2, so that the rope winding chamber 50 can only be connected to the outside world through the first channel 11 and the second channel 52, thereby completely isolating the electric control chamber from the outside world, effectively preventing water in the winding chamber from entering the electric control chamber, and because the base 2 and the upper shell 1 are welded by laser welding or ultrasonic welding, it can effectively prevent water from entering the electric control chamber from the connection position between the base 2 and the upper shell 1, thereby effectively ensuring the waterproofness of the electric control chamber. The rope tensioning device disclosed in the embodiment of the present invention has good sealing performance. At the same time, due to its compact structure and high integration, the applicability of the rope tensioning device is improved.

[0098] like Figure 2 The rope tensioning device also includes a switch key housing 7. The upper housing 1 is provided with a housing mounting slot 15 that is compatible with the switch key housing 7. A switch button is provided on the switch key housing 7. The switch button is used to trigger the circuit on the circuit board, sending a tightening or loosening instruction to the control unit. The control unit controls the rotation of the drive mechanism 3 based on the instruction and the position of the winding shaft. To facilitate the installation and fixation of the switch key housing 7, a housing mounting slot 15 is provided on the upper housing 1 to install and fix the switch key housing 7. The housing mounting slot 15 is a clearance groove excavated in the upper housing 1. This clearance groove prevents the switch key housing 7 from overlapping with the upper housing 1 in thickness, which helps reduce the volume of the rope tensioning device. The upper housing 1 is provided with a switch hole. The switch hole is located in the housing mounting slot 15 and is the location for the switch button. The presence of the switch hole impairs the sealing of the housing. To ensure the sealing of the switch key housing 7, the switch key housing 7 is configured as an elastomeric button that is insert-molded in the housing mounting slot 15. The material of elastomer buttons can be TPU, TPE, TPV, EVA, PU, ​​EPDM, NBR, SR, etc.

[0099] In an embodiment of the present invention, Figure 1 、 2, 14, and 15, the gearbox 32 includes an outer shell 321, which includes a main body 3212 and a shaped portion 3213 disposed outside the main body 3212. The main body 3212 is annular, and the shaped portion 3213 is sleeved outside the main body 3212. The shaped portion 3213 matches the shape of the upper shell 1. Furthermore, to avoid the increase in volume of the rope tensioning device caused by the overlap of the outer shell 321 of the gearbox 32 and the upper shell 1, a relief hole 16 is provided in the upper shell 1, opposite the gearbox 32. The shape of the shaped portion 3213 matches the relief hole 16, and the sidewalls of the shaped portion 3213 conform to the wall of the relief hole 16. The presence of the relief hole 16 directly exposes the surface of the shaped portion 3213 of the outer shell 321 opposite the relief hole 16, thereby avoiding the increase in volume caused by the overlap of the thickness of the outer shell 321 of the gearbox 32 and the thickness of the upper shell 1.

[0100] The part of the shell of the gearbox 32 exposed to the outside must also be limited to a certain range, otherwise it will also cause the thickness of the rope tensioning device to increase. The upper surface of the special-shaped portion 3213 of the gearbox 32 and the upper surface of the upper shell 1 are located on the same plane. The outer shell 321 of the gearbox 32 is adapted to the shape of the corresponding position on the outer shell 1. The setting of the same avoidance hole 16 destroys the sealing of the upper shell 1. In order to solve the above problem, a gearbox seal is provided between the hole wall of the avoidance hole 16 and the special-shaped portion 3213. The gearbox seal can also be an elastomer layer inlaid and injection-molded on the upper shell 1. The material of the elastomer layer can be TPU, TPE, TPV, EVA, PU, ​​EPDM, NBR, SR, etc.

[0101] In the embodiment of the present invention, the worm 33 is used to drive the gear plate 42 to rotate. The motor 31 drives the worm 33 through the gearbox 32. One end of the worm 33 is connected to the output end of the gearbox 32. The second end of the worm 33 is abutted against the axial support portion 17 provided on the upper housing 1 ( Figure 5 ). The worm 33 will generate an axial force along its axial direction during the transmission process. Specifically, Figure 17 When the worm 33 is a right-handed worm, the worm 33 generates an axial force to move toward the axial support portion 17 when it rotates clockwise, and generates an axial force to move toward the gearbox 32 when it rotates counterclockwise. Figure 16 The orientation of the worm 33 in the figure where -18 is located is for reference. Figure 18 When the worm 33 is a left-handed worm, an axial force is generated when the worm rotates clockwise to drive the worm 33 to move toward the gearbox 32, and an axial force is generated when the worm rotates counterclockwise to drive the worm 33 to move toward the axial support portion 17.

[0102] like Figure 12 To prevent axial forces from affecting the transmission of the transmission shaft of the gearbox 32, the output shaft of the gearbox 32 is connected to the worm 33 via a sliding key. This sliding key connection allows for a certain amount of sliding between the worm 33 and the output shaft of the gearbox 32, thereby slowing the transmission of the axial force generated by the worm 33 during rotation to the gearbox 32. Specifically, a cross-shaped key pin 320 is provided on the output end of the gearbox 32, and a key slot 330 is provided on the worm 33 to match the cross-shaped key pin 320. The cross-shaped key pin 320 is inserted into the key slot 330, and the cross-shaped key pin 320 and the key slot 330 can slide axially. The use of the cross-shaped key pin 320 ensures more uniform torque transmission during the rotation of the worm 33.

[0103] To further prevent the axial force on the worm 33 from being transmitted to the transmission shaft of the gearbox 32, a limit stop ring 332 is provided on the worm 33. The limit stop ring 332 is a circle of bosses arranged along the circumference of the worm 33. Correspondingly, a blocking ring 322 corresponding to the limit stop ring 332 is provided on the outer housing 321 of the gearbox 32. The axial force that drives the worm 33 toward the gearbox 32 causes the blocking ring 322 to counteract the limit stop ring 332. After the blocking ring 322 and the limit stop ring 332 counteract each other, the axial force is transmitted to the outer housing 321, thereby effectively preventing the axial force on the worm 33 from being transmitted to the rotating shaft of the motor 31 through the transmission shaft of the gearbox 32.

[0104] The axial support portion 17 is used to bear the axial force generated by the worm 13 during the rotation process. There will be friction between the end face of the worm 33 and the axial support portion 17 when the worm 33 abuts against the axial support portion 17, thereby increasing the friction torque of the worm 33. The existence of this friction torque will cause a decrease in efficiency during the transmission process. In order to improve the transmission efficiency of the worm 33 in this embodiment, the end of the worm 33 away from the gearbox 32 is set as an arc-shaped end 331, and the position of the maximum curvature on the arc-shaped end 331 is abutted against the axial support portion 17. The design of the above structure reduces the contact area between the arc-shaped end 331 and the axial support portion 17. The reduction in the contact area can reduce the friction torque on the worm 33, which is beneficial to improving the transmission efficiency of the worm 33.

[0105] As described above, the form and rotation mode of the worm 33 affect the direction of the axial force generated by the worm 33, and this axial force drives the end of the worm 33 to abut against the axial support portion 17 or the blocking ring 322 of the gearbox 32. When the axial force drives the end of the worm 33 to abut against the blocking ring 322, the friction between the blocking ring 322 and the limit ring 332 is not easy to reduce. Conversely, when the axial force drives the end of the worm 33 to abut against the axial support portion 17, the friction between the end of the worm 33 and the axial support portion 17 can be reduced.

[0106] Therefore, when the axial force generated by the rotation of the worm 33 drives the end of the worm 33 against the axial support portion 17, the rotation direction used to tighten the rope can effectively improve transmission efficiency. Because the torque required during rope tightening is large, the friction torque generated by the worm 33 during transmission needs to be small. The friction torque between the contact surface of the axial support portion 17 and the end of the worm 33 can be effectively reduced. Therefore, defining the rotation direction in which the axial force drives the end of the worm 33 against the axial support portion 17 as the direction for tightening the rope can effectively improve transmission efficiency.

[0107] Specifically, such as Figure 17 When the worm 33 is a right-handed worm, the worm 33 rotates clockwise to meet the above requirements. At this time, the worm 33 is arranged on the right side of the toothed disc 42. Figure 18 When the worm 33 is a left-handed worm, the counterclockwise rotation of the worm 33 also meets the above requirements. At this time, the worm 33 is set on the left side of the toothed disc 42. When the worm 33 is a right-handed worm, the toothed disc 42 engaged with the worm 33 rotates clockwise. Therefore, the clockwise rotation direction of the winding disc 41 is defined as the direction of tightening the rope. When the worm 33 is a left-handed worm, the toothed disc 42 rotates counterclockwise. Therefore, the counterclockwise rotation direction of the winding shaft 4 is defined as the direction of tightening the rope. It should be noted here that the clockwise and counterclockwise rotations of the winding shaft 4 are both based on Figure 17 and Figure 18 The orientation of the winding shaft 4 shown in FIG.

[0108] The design of the above structure enables the worm 33 to be subjected to a smaller friction torque during the process of tightening the rope, thereby increasing the torque during the tightening of the rope and improving the transmission efficiency.

[0109] When the worm 33 is a right-handed worm, when the worm 33 rotates clockwise, due to the meshing transmission between the worm 33 and the toothed disc 42, the winding shaft 4 will also be subjected to an axial force along its axial direction, and this axial force will cause the winding shaft 4 to tend to move toward the upper shell 1.

[0110] When the worm 33 is a left-handed worm, when the worm 33 rotates counterclockwise, the winding shaft 4 will also be subjected to an axial force along its axial direction. This axial force will cause the winding shaft 4 to tend to move toward the upper housing 1.

[0111] The axial forces generated by the above two methods both cause the rotating boss 442 on the rotating shaft 44 to abut against the upper shell 1. Specifically, the rotating boss 442 abuts against the upper shell 1 at the bottom of the rotating shaft limiting hole 18 ( Figure 18), in this case, the depth of the shaft limiting hole 18 needs to be less than the height of the rotating boss 442. Therefore, the rotating boss 442 is designed with an arcuate end, with the point of maximum curvature on the arcuate end abutting against the upper housing 1. This reduces the contact area between the rotating boss 442 and the upper housing 1, thereby reducing the friction torque generated by the rotating boss 442 during rotation, further improving the efficiency of the rope winding process. Furthermore, the rotating boss 442 can also be configured as a hemispherical structure.

[0112] Further, such as Figure 5 In order to better support the worm 33, a support platform 24 is provided on the base 2 to support the radial direction of the worm 33. The worm 33 is overlapped on the support platform 24. The support platform 24 can be a separate protrusion provided on the base 2. As a preferred solution, Figure 3 In this embodiment, the support platform 24 is arranged on the top plate 53 of the partition plate 5. Integrating the support platform 24 into the partition plate 5 can effectively reduce the volume occupied.

[0113] Further, such as Figure 5 A limiting groove 19 is provided on the upper housing 1 at a position opposite the support platform 24 to limit the swing of the arc-shaped end 331. The limiting groove 19 further provides a limiting support for the end of the worm 33 away from the gearbox 32, thereby better preventing the worm 33 from swinging during rotation. The limiting groove 19 is provided in a groove body on the upper housing 1.

[0114] As a preferred solution, in the embodiment of the present invention, the arc-shaped end 331 has a hemispherical structure. The design of the hemispherical structure can further reduce the friction between the arc-shaped end 331 and its contact surface.

[0115] In order to better achieve the self-locking of the worm 33 in the embodiment of the present invention, the lead angle of the worm 33 is set between 2° and 6°.

[0116] like Figure 21 -23. The rope tensioning device in the embodiment of the present invention further includes a travel control mechanism provided in cooperation with the winding shaft, the travel control mechanism including a switch unit 8 and a control unit electrically connected to the switch unit 8 and the drive mechanism 3;

[0117] like Figure 19 A protrusion 441 extending in the radial direction of the rotating shaft 44 is provided on the rotating shaft 44. When the protrusion 441 rotates to a position opposite to the switch unit 8, the switch unit 8 responds, and the control unit controls the driving mechanism 3 according to the response of the switch unit 8.

[0118] The switch unit 8 is used to record the number of rotations of the rotating shaft 44, thereby reflecting the number of turns of the winding spool 4. In this embodiment, there is one protrusion 441. Therefore, each time the rotating shaft 44 rotates, the switch unit 8 responds once and transmits this response to the control unit. The control unit also determines whether the motor 31 is rotating in the forward or reverse direction at that time. Based on this data, the control unit can determine the number of forward and reverse rotations of the winding spool 4. The number of rotations of the winding spool 4 can be correlated with the length of the wound or unwound rope.

[0119] In an embodiment of the present invention, it is necessary to determine an initial position, which records the initial state of the winding shaft, and the winding shaft 4 is rotated with the initial state as the starting position. In order to better count the number of rotations of the winding shaft 4, the initial position is set to the position where the protrusion 441 triggers the switch unit 8 for the first time. Setting the initial position at the position where the protrusion 411 triggers the switch unit 8 can facilitate the counting of the number of rotations, because the initial position is the position point where the switch unit 8 responds, and the winding shaft 4 can be easily returned to the initial position according to the number of responses. In the actual installation process, the protrusion 441 can be at any position at the beginning. Before the rope is passed through the winding drum 41, the protrusion 441 is rotated so that the position where the protrusion triggers the switch unit 8 for the first time is defined as the initial position. At this time, the control unit records the response of the switch unit 8, determines the initial position, and then passes the rope through the winding drum 41.

[0120] Here, the forward rotation of the winding spool 4 from the initial position is considered tightening. During the rotation process, each rotation of the winding spool 4 triggers the switch unit 8 once. The switch unit 8 transmits this trigger signal to the control unit. The control unit determines how many turns the winding spool 4 has tightened based on the direction of the motor 31 and the response of the switch unit 8. After reaching the tightened state, when the rope needs to be loosened, the control unit controls the motor 31 to rotate in the reverse direction, and similarly determines the number of turns the winding spool 4 has rotated in the reverse direction based on the number of responses to return the winding spool 4 to the initial position. For example, if the motor 31 rotates in the forward direction from the initial position to tighten the rope, and the control unit receives two signal feedbacks during the rotation process, indicating that the winding spool has rotated at least two turns, then, to loosen the rope, the control unit needs to control the motor to rotate in the reverse direction and stop rotating after receiving three signal feedbacks from the switch unit to return to the initial position. This embodiment of the present invention converts the number of turns the winding spool 4 has rotated into the number of responses of the switch unit 8. Controlling the rotation of the winding spool 4 based on the responses makes the structure simpler and more convenient to use.

[0121] During the process of rotating the spool 4 from the initial position to wind the rope, the rope length is limited, and the space for accommodating the rope wound on the spool 4 is also limited. Therefore, the spool 4 cannot rotate indefinitely in the tightening direction. This will not only cause the rope to be over-tightened, but also cause the rope to get stuck in the space when the space for accommodating the rope on the winding drum 41 is full. Therefore, the spool 4 has a limit number of turns during the tightening process, which is used to indicate the maximum number of turns allowed for the spool 4 to rotate.

[0122] The maximum number of turns is determined based on the size of the accommodation space, as well as the length and diameter of the rope, and the diameter of the winding drum 41. The size of the accommodation space is the space between the outer diameter of the winding drum 41 and the inner wall of the rope winding chamber 50. The larger the diameter of the winding drum 41, the longer the rope can be wound per rotation. The larger the diameter of the rope, the more space is occupied by each winding. The maximum number of turns is determined based on actual needs and is achievable by those skilled in the art, so further explanation is not provided here.

[0123] The above-mentioned structure is designed by providing a raised portion on the rotating shaft. The raised portion rotates with the rotating shaft to control the response of the switch unit. Each response of the switch unit indicates one rotation of the winding shaft. The switch unit transmits this response data to the control unit, which adjusts the rotation of the drive mechanism based on this response data, thereby preventing the winding shaft from rotating to its extreme position and controlling the winding shaft to relax to its initial position. This invention has a simple structure and reduces the cost of the rope tensioning device.

[0124] In the prior art, the number of rotations of the winding shaft 4 is determined using encoders or other methods, which is not only complex but also has high assembly costs. In the embodiment of the present invention, the switch unit 8 and the raised portion 441 on the rotating shaft 44 cooperate to count the number of rotations of the winding shaft 4. After the cam 441 rotates one circle, it triggers the switch unit 8 to respond and record the rotation. By accurately recording the number of circles, the extreme position of the rotation of the winding shaft 4 can be further determined, thereby facilitating the adjustment of the rotation of the winding shaft. In order to ensure that the raised portion 441 can smoothly control the response of the switch unit 8, the raised portion 441 is a cam provided on the rotating shaft 44.

[0125] The above embodiment describes the case where a protrusion 441 is provided on the rotating shaft 44. In this state, the rotating shaft 44 rotates one circle to make the switch unit 8 respond once. In order to more accurately record the position of the winding shaft 4, in another embodiment, Figure 24As shown, the rotating shaft 44 is provided with two raised portions 441, symmetrically arranged on either side of the rotating shaft 44, with the raised directions of the two raised portions 44 differing by 180 degrees. This way, the rotating shaft 44 triggers a response from the switch unit 8 twice during one rotation. Determining the rotational position of the winding shaft 4 using a half-turn as a reference is more accurate than determining the position based on a full turn. It should be noted that the number of raised portions 441 can also be set to four or three. Regardless of whether four or three are used, the raised portions 441 need to be evenly distributed along the circumference of the rotating shaft 44.

[0126] Specifically, the switch unit 8 includes a first contact piece 81 and a second contact piece 82 . Under the action of the protrusion 441 , the first contact piece 81 and the second contact piece 82 interact with each other to generate a response.

[0127] The switch unit 8 can be a normally open switch or a normally closed switch. Figure 21 This is a normally open switch unit. In this embodiment, the first contact piece 81 and the second contact piece 82 are spaced apart. When the protrusion 441 rotates to a position opposite to the first contact piece 81, the protrusion 441 causes the first contact piece 81 to elastically deform and engage with the second contact piece 82. When the first contact piece 81 and the second contact piece 82 come into contact, the switch unit 8 responds.

[0128] To facilitate the elastic deformation of the first contact piece 81, the switch unit 8 further includes a push block 83 that facilitates the protrusion 441 to push the first contact piece 81 to elastically deform. The push block 83 is fixed to the first contact piece 81 and is disposed opposite the rotating shaft 44. A gap exists between the push block 83 and the rotating shaft 44. When the protrusion 441 of the rotating shaft 44 rotates to the position of the push block 83, the first contact piece 81 is elastically deformed to engage with the second contact piece 82.

[0129] To facilitate the engagement of the first contact piece 81 and the second contact piece 82, the first contact piece 81 is provided with a first contact portion 811 that protrudes toward the second contact piece 82. The second contact piece 82 is provided with a second contact portion 821 that protrudes toward the first contact piece 81. The first contact portion 811 and the second contact portion 821 are positioned opposite each other. During the elastic deformation of the first contact piece 81, the engagement between the first contact portion 811 and the second contact portion 821 is first achieved.

[0130] like Figure 22 It is a normally closed switch. In this embodiment, the first contact piece 81 and the second contact piece 82 are in contact with each other. When the protrusion 441 rotates to a position opposite to the second contact piece 82, the protrusion 441 drives the second contact piece 82 to elastically deform to separate from the first contact piece 81, thereby responding to the protrusion 441.

[0131] In this embodiment, a push block 83 is fixed to the second contact piece 82 to facilitate the protrusion 441 to push the second contact piece 82 to elastically deform. The push block 83 is arranged opposite to the rotation shaft 44. When the protrusion 441 rotates to the position of the push block 83, it pushes the second contact piece 82 to elastically deform and separate from the first contact piece 81.

[0132] In order to facilitate the threading of the rope, the rope threading groove 410 on the winding drum 41 is usually set to be opposite to the position of the first channel 11 after the initial position is set. Therefore, in this embodiment, the protruding direction of the protrusion 441 is consistent with the penetration direction of the rope threading groove 410, and the pushing block 83 is correspondingly set directly above the penetration direction of the first channel 11, so that when the protrusion 441 is in the initial position, the rope threading groove 410 is just opposite to the first channel 11.

[0133] In this embodiment, the first contact piece 81 and the second contact piece 82 are both electrically connected to the control unit. To ensure stability during use, the first contact piece 81 and the second contact piece 82 are arranged to be fixed to a contact piece support block 84 at a distance from each other. The contact piece support block 84 is fixed to the upper housing 1. The contact piece support block 84 supports the first contact piece 81 and the second contact piece 82. Specifically, the contact piece support block 84 is provided with a mounting and fixing column, and the upper housing 1 is provided with a mounting and fixing groove that engages with the mounting and fixing column.

[0134] To effectively drive the worm 33, the motor 31 is often connected to the worm 33 via a gearbox 32. Conventional gearboxes 32 are often parallel-axis gearboxes. These gearboxes suffer from a non-compact internal structure, resulting in an uneven transmission process and significant wear between the gears. Therefore, the gears are often made of metal. Using metal gears increases both cost and weight. To further reduce component costs, the present invention further improves the gearbox.

[0135] Specifically, the gearbox adopts a planetary gearbox, such as Figure 13 The gearbox 32 includes an outer shell 321 and a planetary transmission mechanism disposed within the outer shell 321. The planetary transmission mechanism includes a planetary carrier 323, a plurality of planetary gears 324 rotatably mounted on the planetary carrier 323, a sun gear 325 meshing between the planetary gears 324, and a ring gear 3211 meshing with the planetary gears 324. The ring gear 3211 is disposed on the inner sidewall of the outer shell 321. In this embodiment of the present invention, the body 3212 is annular, and the ring gear 3211 is disposed on the inner sidewall of the body 3212.

[0136] The motor 31 is arranged parallel to the base 2. The gearbox 32 further includes a gearbox base 326. The outer shell 1 and the motor 31 are fixed on both sides of the gearbox base 326. The output shaft of the motor 31 passes through the gearbox base 326 and is connected to the planetary transmission mechanism. Specifically, the output shaft of the motor 31 is fixedly connected to the sun gear 325.

[0137] In the embodiment of the present invention, the gearbox base 326 is fixed to the outer shell 1 by laser welding. The laser welding connection and fixing can ensure the sealing between the two.

[0138] In this embodiment of the present invention, three planetary gears 324 are provided. The sun gear 325 is mounted opposite the center of the planetary carrier 323 and meshes with all three planetary gears 324. The motor 31 is fixedly connected to the sun gear 325. The motor 31 drives the sun gear 325 to rotate, which in turn drives the planetary gears 324. The planetary gears 324 and the ring gear 3211 move relative to each other, thereby driving the rotation of the planetary carrier 323. The output end of the gearbox 32 is mounted on the planetary carrier 323 and is connected to the worm gear 33 to provide transmission control for the worm gear 33.

[0139] In this embodiment of the present invention, the planetary gears 324, sun gear 325, and planet carrier 323 are all made of plastic. The use of planetary gears for transmission ensures good load distribution during rotation and reduces wear between the gears. Given these characteristics, plastic gears with lower load capacity can also meet operational requirements. Plastic gears can be processed using mass injection molding, thereby reducing the cost of product parts and assembly.

[0140] As a further optimization solution, the planetary gear transmission is a compound planetary gear transmission. The compound planetary gear transmission is provided with two sets of planetary transmission mechanisms.

[0141] The use of planetary gears for transmission requires a sufficiently compact transmission. In this embodiment, the maximum outer diameter of the outer housing's ring gear 3211 is 8-10 mm. Accordingly, the module of the planetary transmission gear 323 is 0.15-0.2. This structural design facilitates integrated transmission design and reduces size.

[0142] Furthermore, in order to facilitate the installation of the efficient transmission rope elastic device on the wearable article, the base 2 is symmetrically provided with a first support plate 25 and a second support plate 26 on both sides. The first support plate 25 and the second support plate 26 are respectively used to connect and fix with the wearable article.

[0143] An embodiment of the present invention further discloses a wearable article comprising a flexible base and a cord arranged on the flexible base, wherein the cord tightening device cooperates with the cord to tighten or loosen the flexible base.

[0144] The wearable article can be a shoe, wherein the flexible base is a shoe body, the rope is elastically arranged on the shoe body and cooperates with the rope to tighten or loosen the shoe body. The shoe also includes a sole, and the shoe body is arranged on the sole.

[0145] As a preferred solution, the rope elastic device is placed on the tongue of the shoe body. Of course, due to the smaller structure of the rope elastic device, it can also be placed on the sole of the shoe.

[0146] In addition, the rope elastic device can also be applied to wearable products such as underwear or school bags.

[0147] The above describes in detail the structure, features and effects of the present invention based on the embodiments shown in the drawings. The above is only a preferred embodiment of the present invention, but the scope of implementation of the present invention is not limited to what is shown in the drawings. Any changes made in accordance with the concept of the present invention, or modifications to equivalent embodiments with equivalent changes, which do not exceed the spirit covered by the description and drawings, should be within the scope of protection of the present invention.

Claims

1. An integrated rope and belt tensioning device, comprising a base, an upper shell cooperating with the base, a driving mechanism and a winding shaft provided on the base; The winding shaft comprises a winding disc for winding a rope and a toothed disc fixedly connected to the winding disc; the driving mechanism drives the winding disc to rotate through the toothed disc to tighten or loosen the rope; Its characteristics are: The winding shaft is rotatably mounted in a cavity between the upper shell and the base; the winding disc is located between the toothed disc and the base, and a first passage communicating with the inside and outside of the cavity is provided at a position of the upper shell close to the base or on the base; The base is further provided with a partition, which divides the cavity into an electric control cavity and a rope winding cavity, and the driving mechanism is arranged in the electric control cavity; The toothed disc and the winding disc are arranged on both sides of the partition in the up-down direction, the electric control cavity covers the top of the partition, the partition is provided with a through hole connecting the rope winding cavity and the electric control cavity, the connecting portion between the toothed disc and the winding disc on the winding shaft is passed through the through hole, and the connecting portion is provided with a groove for placing a sealing ring, the groove is opposite to the inner side wall of the through hole, the rope winding cavity is arranged between the partition and the base, and the rope winding cavity and the first channel are connected through the second channel; The partition is provided with a top plate and a first side plate and a second side plate distributed on both sides of the top plate and extending vertically downward along the top plate; The perforation is provided on the top plate, two second channels are provided, and the two second channels are respectively provided on the first side plate and the second side plate; The upper shell is provided with a top cover and a left plate and a right plate distributed on both sides of the top cover and extending vertically downward along the top cover, and two first channels are provided, and the two first channels are respectively provided on the left plate and the right plate; The rope elastic device further comprises a stroke control mechanism arranged in cooperation with the winding shaft, wherein the stroke control mechanism comprises a switch unit and a control unit electrically connected to the switch unit and the driving mechanism; A protrusion extending in a radial direction is provided on the rotating shaft of the winding drum. When the protrusion rotates to a position opposite to the switch unit, the switch unit responds, and the control unit controls the driving mechanism according to the response of the switch unit.

2. The integrated rope elastic device according to claim 1, characterized in that: The partition is disposed to be clamped between the upper shell and the base, and a sealing member is disposed between the partition and the base.

3. The integrated rope elastic device according to claim 2, characterized in that: The sealing member is an elastic layer that is insert-injected onto the base and faces the separator.

4. The integrated rope elastic device according to claim 1, characterized in that: The first side panel is in contact with the left side panel, and the second side panel is in contact with the right side panel.

5. The integrated rope elastic device according to claim 1, characterized in that: The base is provided with a positioning column, and the partition is provided with a positioning hole matched with the positioning column.

6. The integrated rope elastic device according to claim 1, characterized in that: The upper shell and the base are connected together by laser welding or ultrasonic welding.

7. The integrated rope elastic device according to claim 6, characterized in that: A shell seal is provided at the connection between the upper shell and the base.

8. The integrated rope elastic device according to claim 7, characterized in that: The shell seal is an elastomer layer that is insert-injected onto the base and faces the upper shell. The elastomer layer is disposed on the inner side of the laser welding or ultrasonic welding portion.

9. The integrated rope elastic device according to claim 1, characterized in that: The rope elastic device further comprises a switch key housing, and the upper housing is provided with a housing mounting groove adapted to the switch key housing.

10. The integrated rope elastic device according to claim 9, characterized in that: The switch key housing is an elastic button that is inlaid and injection-molded in the housing installation groove.

11. The integrated rope elastic device according to claim 1, characterized in that: The driving mechanism includes a motor, a gearbox and a worm gear matched with the gear disc, and the motor drives the worm gear through the gearbox; The upper shell is provided with a avoidance hole opposite to the gearbox, and a gearbox seal is provided between the hole wall of the avoidance hole and the gearbox.

12. The integrated rope elastic device according to claim 11, characterized in that: The gearbox seal is an elastomer layer that is insert-injected onto the upper housing.

13. The integrated rope elastic device according to claim 11, characterized in that: The upper surface of the gearbox and the upper surface of the upper housing are located on the same plane.

14. The integrated rope elastic device according to claim 1, characterized in that: A first support plate and a second support plate are symmetrically provided on both sides of the base for facilitating the installation and fixation of the rope elastic device.

15. A wearable article, characterized in that: It comprises an integrated cord elastic device as described in any one of claims 1 to 14, wherein the wearable article has a flexible base and a cord arranged on the flexible base, and the cord elastic device cooperates with the cord to tighten or loosen the flexible base.

16. The wearable article according to claim 15, wherein: The wearable article is a shoe, the flexible base is a shoe body, the rope elastic device is arranged on the shoe body, and cooperates with the rope to tighten or loosen the shoe body.

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