A lace knob device and a method of installing the same

Abstract

This invention discloses a tethered knob device, comprising a screw cap, a pawl ring, a spool, a spool compartment, and a base. The screw cap is provided with multiple positioning pins and multiple axial connecting buckles. The pawl ring includes a central shaft, the top of which is provided with positioning grooves matching the number of positioning pins. The positioning pins are inserted into the positioning grooves. Multiple pawls are circumferentially mounted on the central shaft. Each pawl consists of a pawl arm, a rotating shaft, and pawl teeth. The pawl arm is rotatably connected to the central shaft via the rotating shaft. A rotating ring is also rotatably connected inside the central shaft. A sliding shaft is provided on the inner shaft of the rotating ring. The sliding shaft moves axially along the rotating ring, causing it to deflect. A first lever is provided at one end of the rotating shaft, and a second lever is provided circumferentially around the rotating ring. During installation, simply pull the sliding shaft upwards. When the rotating ring deflects, the pawl arm rotates along the rotating shaft towards the center of the central shaft under the action of the first and second levers, thus installing the pawl ring into the spool compartment, improving installation efficiency.

Description

Technical Field

[0001] This invention relates to rope and strap loosening technology, and more particularly to a strap knob device and its installation method. Background Technology

[0002] The lacing knob device is used to tighten and loosen the cord, replacing the traditional method that requires both hands to operate. Existing lacing retraction devices use a pawl and ratchet to tighten and loosen the cord. Due to the small size of the lacing knob device and the tight fit between the pawl and ratchet, it is difficult to fully engage the pawl with the ratchet during installation. Existing solutions, such as CN207220305U, disclose that: "One end of the pawl 3y relative to the root 31y has a positioning protrusion 32y that mates with the pawl positioning groove 41y. If the positioning protrusion 32y can be inserted into the pawl positioning groove 41y, the pawl 3y, through the limiting effect of the positioning protrusion 32y and the pawl positioning groove 41y, can achieve a good fit with the circumferential teeth 23 of the knob wheel 2 (refer to paragraph 0042 of the specification)." However, this method requires that the positioning protrusions on multiple pawls be individually engaged with the positioning grooves before installation. After installation, the positioning protrusions on the pawls need to be separated from the positioning grooves, making installation time-consuming, labor-intensive, and inefficient. Therefore, existing tethered knob devices require further improvement. Summary of the Invention

[0003] To address the shortcomings of the existing technology, this invention proposes a lacing knob device and its installation method, which further improves the pawl ring to make its installation more convenient.

[0004] The technical solution of this invention is implemented as follows: A lacing knob device, characterized in that it comprises: A screw cap, wherein the screw cap is provided with multiple positioning pins and multiple axial connecting buckles; A ratchet ring includes a central shaft with positioning grooves at its top matching the number of positioning pins. Positioning pins are inserted into these grooves. Multiple ratchet pawls are circumferentially mounted on the central shaft. Each ratchet pawl consists of a pawl arm, a rotating shaft, and pawl teeth. The pawl arm is rotatably connected to the central shaft via the rotating shaft. A rotating ring is rotatably connected inside the central shaft. A sliding shaft is provided on the inner shaft of the rotating ring. The sliding shaft moves along the axial direction of the rotating ring to drive it to deflect. A first paddle is provided at one end of the rotating shaft, and a second paddle is provided around the circumference of the rotating ring. When the rotating ring deflects, under the action of the first paddle and the second paddle, the claw arm rotates along the rotating shaft toward the center of the central shaft. A first engaging structure is provided at the bottom of the central shaft. The thread reel includes an I-shaped reel with a boss on its top surface and a second engaging structure on its inner sidewall. The wheel well includes an axial limiting ring, the inner wall of which is provided with a plurality of ratchet teeth, the pawls contacting the ratchet teeth, and the ratchet teeth being used to limit the pawl ring from rotating in one direction; The base includes an arc-shaped seat for mounting the wheel well.

[0005] In this invention, an extension shaft is fixedly provided at the bottom of the rotating ring, and the rotating ring is rotatably connected to the central shaft via the extension shaft. The sliding shaft is provided inside the extension shaft and slides up and down along the extension shaft. A guide groove is provided on the side wall of the extension shaft. The sliding shaft is composed of a shaft body, a shaft disc and a lever. The lever is located in the guide groove. When the sliding shaft moves upward, it drives the rotating ring to deflect under the action of the guide groove.

[0006] In this invention, the guide groove includes an inclined groove portion and a straight groove portion.

[0007] In this invention, the cap is provided with multiple axial limiting buckles, the cap is connected to the wheel chamber via the axial limiting buckles, and the axial connecting buckles are connected to the shaft disc on the sliding shaft, the cap drives the sliding shaft to move up and down.

[0008] In this invention, the wheel well includes a well body, with two traction holes on one side of the well body. A rectangular groove and a first limiting buckle are also provided on the same side of the well body as the traction holes. The rectangular groove and the first limiting buckle are used to connect the wheel well to the base. A second limiting buckle is provided on the side of the well body away from the first limiting buckle. The second limiting buckle is inserted into the base to fix the wheel well.

[0009] In this invention, positioning posts are respectively provided on both sides of the hopper body perpendicular to the first limiting buckle, and the positioning posts are used to limit the circumferential movement of the hopper body.

[0010] In this invention, the arc-shaped seat is also provided with two mounting slots for mounting and connecting traction holes. The top of the arc-shaped seat is provided with a mounting surface that fits against the bottom surface of the wheel well. The arc-shaped seat is also provided with a circumferential limiting buckle. A first circumferential positioning groove is provided in the opposite direction of the circumferential limiting buckle, and a second circumferential positioning groove is provided on the same side as the circumferential limiting buckle.

[0011] In this invention, when installing the wheel housing and the base, the second limiting buckle on the wheel housing is inserted into the first circumferential positioning groove on the base, and then fixed by the first limiting buckle on the wheel housing and the second circumferential positioning groove on the base, so that the spool is located between the wheel housing and the base. The arc-shaped seat is also provided with side positioning holes on both sides. When the second limiting buckle is inserted into the first circumferential positioning groove, the positioning pin is inserted into the side positioning hole, and the circumferential rotation of the wheel chamber is restricted by the positioning pin and the side positioning hole.

[0012] In this invention, the bottom of the central shaft is provided with multiple limiting members connected to it. The limiting members are inserted into the wheel chamber. The outer side of the limiting members has bone blocks, and the axial movement of the pawl ring is restricted by the cooperation between the bone blocks and the wheel chamber.

[0013] A method for installing a lacing knob device, characterized by comprising the following steps: Step 1: Install the spool into the spool chamber and insert the second limiting buckle on the spool chamber into the first circumferential positioning groove on the base. The spool is fixed by the first limiting buckle on the spool chamber and the second circumferential positioning groove on the base, so that the spool is located between the spool chamber and the base. Step 2: Pull the sliding shaft upward. The lever on the sliding shaft drives the rotating ring to deflect under the action of the inclined groove of the guide groove. When the rotating ring deflects, it drives multiple pawls to retract and locks the lever on the sliding shaft into the straight groove of the guide groove to limit the reset of multiple pawls. Step 3: Connect the first locking structure with the second locking structure, and insert the limiting member into the wheel well. The limiting member is connected to the anti-skid ring through the bone block on the limiting member, so that the limiting member is located on the outside of the boss. Step 4: Align the locating pin on the cap with the locating groove, align the axial connecting buckle with the shaft disc of the sliding shaft, press the cap into the wheel chamber and connect it through the axial limiting buckle. During the process of pressing the cap into the wheel chamber, the cap will push the sliding shaft to move downward, thereby releasing the restriction of the sliding shaft on the pawl and completing the installation.

[0014] The lacing knob device and its installation method according to the present invention have the following advantages: The pawl ring includes a central shaft with multiple pawls circumferentially mounted on it. Each pawl consists of a pawl arm, a rotating shaft, and pawl teeth. The pawl arm is rotatably connected to the central shaft via the rotating shaft. A rotating ring is also rotatably connected inside the central shaft. A sliding shaft is mounted on the inner shaft of the rotating ring. This sliding shaft moves axially along the rotating ring, causing it to deflect. A first lever is mounted at one end of the rotating shaft, and a second lever is mounted circumferentially on the rotating ring. When the rotating ring deflects, the pawl arm rotates along the rotating shaft towards the center of the central shaft under the action of the first and second levers. During installation, simply pulling the sliding shaft upwards causes the pawl arm to rotate along the rotating shaft towards the center of the central shaft, thus installing the pawl ring inside the cargo wheel, improving installation efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the belt knob device of the present invention; Figure 2 This is a schematic diagram of the screw cap structure of the present invention; Figure 3 This is an exploded structural diagram of the belt knob device of the present invention; Figure 4 This is a schematic diagram of the ratchet ring of the present invention; Figure 5 This is a schematic diagram of the internal structure of the ratchet ring of the present invention; Figure 6 for Figure 5 Enlarged structural diagram at point A; Figure 7 This is a partial structural schematic diagram of the ratchet ring of the present invention; Figure 8 This is a schematic diagram of the installation structure of the screw cap and ratchet ring of the present invention; Figure 9 This is a schematic diagram of the internal structure of the belt knob device of the present invention; Figure 10 This is a schematic diagram of the wheel compartment structure of the present invention; Figure 11 This is a schematic diagram of the structure of the base of the present invention; Figure 12 This is a schematic diagram of the installation structure of the base and wheel well of the present invention; Figure 13 This is a schematic diagram of the thread reel of the present invention; Figure 14 This is a schematic diagram of the installation structure of the ratchet ring and the reel of the present invention; Figure 15 This is a flowchart of the installation method of the belt knob device of the present invention.

[0016] The reference numerals in the attached figures are as follows: 10-Screw cap, 101-Axial limit buckle, 102-Anti-slip texture, 103-Positioning pin, 104-Axial connection buckle. 20-Pawl ring, 201-Central shaft, 202-Pawl, 202'1-Pawl arm, 202'2-Rotating shaft, 202'3-Pawl tooth, 202'4-Protrusion, 202'5-First lever, 203-Restricting component, 203'1-Bone block, 204-Cavity groove, 205-Positioning groove, 206-Rotating ring, 207-Arc groove, 208-Positioning protrusion, 209-Second lever, 210-Spring, 211-Extension shaft, 212-Guide groove, 212'1-Slanted groove portion, 212'2-Straight groove portion, 213-Sliding shaft, 213'1-Shaft body, 213'2-Shaft disc, 213'3-Lever, 214-First engaging structure 30-Spool, 301-I-shaped spool, 302-Boss, 303-Second engaging structure, 304-Rope threading hole 40-Wheel compartment, 401-Compartment body, 402-Traction hole, 403-Rectangular groove, 404-First limiting buckle, 405-Second limiting buckle, 406-Positioning pin, 407-Anti-slip ring, 408-Axial limiting ring, 409-Ratchet. 50-Base, 501-Arc-shaped seat, 502-Mounting groove, 503-Mounting surface, 504-Circumferential limit buckle, 505-First circumferential positioning groove, 506-Side positioning hole, 507-Second circumferential positioning groove. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0018] like Figures 1 to 14 As shown, this lacing knob device of the present invention includes a cap 10, a pawl ring 20, a spool 30, a wheel chamber 40, and a base 50. The base 50 is mounted on the shoe upper, the spool 30 is located inside the wheel chamber 40, and the wheel chamber 40 is connected to the base 50 to confine the spool 30 inside the wheel chamber 40. The pawl ring 20 is mounted on the cap 10, and the cap 10 is perforated to allow the pawl ring 20 to rotate, thus connecting the cap 10 to the wheel chamber 40.

[0019] like Figure 2 As shown, the cap 10 is provided with multiple axial limiting buckles 101, and the cap 10 is connected to the wheel well 40 through the axial limiting buckles 101. The outer shell of the cap 10 is provided with anti-slip textures 102 in the circumferential direction to increase the friction of the outer shell of the cap 10. The inside of the cap 10 is provided with multiple positioning pins 103 and multiple axial connecting buckles 104, which are used to connect the cap 10 to the ratchet ring 20.

[0020] like Figures 4 to 7 As shown, the pawl ring 20 includes a central shaft 201. The top of the central shaft 201 is provided with positioning grooves 205 matching the number of positioning pins 103. The positioning pins 103 are inserted into the positioning grooves 205, thereby enabling the cap 10 to rotate the pawl ring 20. Multiple pawls 202 are circumferentially mounted on the central shaft 201. Each pawl 202 consists of a pawl arm 202'1, a rotating shaft 202'2, and pawl teeth 202'3. The rotating shaft 202'2 is located at one end of the pawl arm 202'1, and the pawl arm 202'1 is rotatably connected to the central shaft 201 via the rotating shaft 202'2. The pawl arm 202'1 rotates along the rotating shaft 202'2 towards the center of the central shaft 201. The pawl teeth 202'3 are located at the end of the pawl arm 202'1 away from the rotating shaft 202'2, and a protrusion 202'4 is connected to the other side of the pawl teeth 202'3. A limiting member 203 is provided at the bottom of the central shaft 201. The limiting member 203 and the central shaft 201 form a cavity 204. When the claw arm 202'1 rotates along the rotating shaft 202'2 toward the center of the central shaft 201, the protrusion 202'4 is located in the cavity 204.

[0021] like Figure 8As shown, the positioning pin 103 is inserted into the positioning groove 205, so that the cap 10 is connected to the pawl ring 20. The inner side of the limiting member 203 is also provided with a first engaging structure 214, which is used to connect with the spool, thereby enabling the pawl ring 20 to drive the spool 30 to rotate.

[0022] like Figure 13 As shown, the reel 30 includes an I-shaped reel 301. A boss 302 is provided on the top of the I-shaped reel 301. A second engaging structure 303 is provided on the inner wall of the boss 302. First engaging structures 214 are staggered and engaged within the second engaging structures 303. The reel achieves mutual transmission through the interlocking of ribs on the first and second engaging structures 214 and 303. Multiple rope holes 304 are provided in the middle of the I-shaped reel 301. The rope passes through the rope holes 304, and the reel 30 controls the tightening and loosening of the rope.

[0023] like Figure 14 As shown, the first engaging structure 214 and the second engaging structure 303 are engaged, and the limiting member 203 is located outside the boss portion 302 to ensure the stability of the pawl ring 20 and the spool 30 during rotation.

[0024] like Figure 10 As shown, the wheel well 40 includes a well body 401. Two traction holes 402 are provided on one side of the well body 401, through which ropes connected to the rope threading hole 304 are pulled out. On the same side of the well body 401 as the traction holes 402, a rectangular groove 403 and a first limiting buckle 404 are also provided, which are used to connect the wheel well 40 to the base 50. On the side of the well body 40 away from the first limiting buckle 404, a second limiting buckle 405 is provided, which is inserted into the base 50 to fix the wheel well 40. Positioning posts 406 are provided on the perpendicular sides of the well body 401 and the first limiting buckle 404, respectively, for circumferentially limiting the position of the well body 401. The bin body 401 has an anti-slip ring 407 in its middle. The diameter of the anti-slip ring 407 is larger than the diameter of the boss portion 302 but smaller than the diameter of the top surface of the I-beam 301, allowing the spool 30 to remain within the bin body 401. An axial limiting ring 408 is connected to the top surface of the bin body 401. Multiple ratchet teeth 409 are connected to the inner ring of the axial limiting ring 408. These ratchet teeth 409 engage with a pawl ring 20 and restrict the pawl ring to rotate only in one direction. Figure 9 As shown, when the pawl ring 20 is installed on top of the wheel well 40, the limiting member 203 is inserted into the anti-slip ring 407. The limiting member 203 has a bone block 203'1 on its outer side, and the axial movement of the pawl ring 20 is limited by the cooperation between the bone block 203'1 and the anti-slip ring 407.

[0025] like Figure 11As shown, the base 50 includes an arc-shaped seat 501, which has an arc-shaped structure to facilitate installation on shoe uppers, collars, etc. The arc-shaped seat 501 also has two mounting slots 502 for mounting and connecting the traction hole 402. The top of the arc-shaped seat 501 has a mounting surface 503 that fits against the bottom surface of the wheel well 40. The arc-shaped seat 501 also has a circumferential limiting buckle 504. A first circumferential positioning groove 505 is connected to the opposite side of the circumferential limiting buckle 504, and a second circumferential positioning groove 507 is provided on the same side as the circumferential limiting buckle 504. When installing the wheel chamber 40 and the base 50, the second limiting buckle 405 on the wheel chamber 40 is inserted into the first circumferential positioning groove 505 on the base 50, and then fixed by the first limiting buckle 404 on the wheel chamber 40 and the second circumferential positioning groove 507 on the base 50, so that the spool 30 is located between the wheel chamber 40 and the base 50. Side positioning holes 506 are also provided on both sides of the arc-shaped base 501. While inserting the second limiting buckle 405 into the first circumferential positioning groove 505, the positioning pin 406 is engaged into the side positioning hole 506, thereby restricting the circumferential rotation of the wheel chamber 40 through the positioning pin 406 and the side positioning hole 506.

[0026] like Figure 12 As shown, the spool 30 is installed inside the spool chamber 40, and the second limiting buckle 405 on the spool chamber 40 is inserted into the first circumferential positioning groove 505 on the base 50. This is achieved by the first limiting buckle 404 on the spool chamber 40 and the second circumferential positioning groove 507 on the base 50, positioning the spool 30 between the spool chamber 40 and the base 50. Next, the pawl ring 20 is installed on the top surface of the spool chamber 40, engaging with the ratchet tooth 409. Finally, the positioning pin 103 on the cap 10 is aligned with the positioning groove 205, and the cap 10 is pressed into the spool chamber 40, so that the bottom surface of the cap 10 fits against the mounting surface 503 on the base 50, and is connected by the axial limiting buckle 104. There is a certain distance between the bottom surface of the axial limiting ring 408 and the mounting surface 503, allowing the cap 10 to move upwards in the axial direction.

[0027] In this embodiment, the screw cap 10 drives the pawl ring 20 to rotate via the positioning pin 103. The pawl ring 20, through the engagement of the first engaging structure 214 and the second engaging structure 303, drives the reel 30 to rotate. Because the pawl 202 on the pawl ring 20 engages with the ratchet tooth 409, the screw cap 10, pawl ring 20, and reel 30 can only rotate in one direction, tightening the rope during this rotation. When the rope needs to be loosened, the screw cap 10 is pulled upwards along the axial direction. The screw cap 10 causes the pawl ring 20 to separate from the ratchet tooth 409 on the reel chamber 40, allowing the screw cap 10, pawl ring 20, and reel 30 to rotate freely, thus loosening or tightening the rope.

[0028] Because the lacing knob device is small in size, and the pawl ring 20 fits tightly against the ratchet tooth 409, it is difficult to fully engage the pawl ring 20 with the ratchet tooth 409 during installation. Figures 5 to 7 As shown, the pawl ring 20 is further improved. A first paddle 202'5 is provided at the pivot 202'2. A spring 210 is provided between one end of the first paddle 202'5 and the inner wall of the central shaft 201, and the spring 210 is used to reset the pawl 202. A rotating ring 206 is also rotatably connected inside the central shaft 201. A second paddle 209 is circumferentially provided on the rotating ring 206. The second paddle 209 is in contact with the side of the first paddle 202'5 away from the spring 210, which is used to limit the pawl arm 202'1 from rotating along the pivot 202'1 away from the center of the central shaft 201. The rotating ring 206 is provided with multiple arc grooves 207. One end of the arc groove 207 has a positioning protrusion 208. The positioning protrusion 208 is fixedly connected to the central shaft 201 and is used to guide the rotating ring 206 during rotation. An extension shaft 211 is fixedly installed at the bottom of the rotating ring 206, and the rotating ring 206 is rotatably connected to the central shaft 201 via the extension shaft 211. A sliding shaft 213 is installed inside the extension shaft 211, and the sliding shaft 213 slides up and down along the extension shaft 211. A guide groove 212 is provided extending to the side wall of 211. The sliding shaft 213 consists of a shaft body 213'1, a shaft disc 213'2, and a lever 213'3. The lever 213'3 is located in the guide groove 212, which includes an inclined groove portion 212'1 and a straight groove portion 212'2.

[0029] During the installation of the pawl ring 20 on the wheel 40, firstly, the sliding shaft 213 needs to move upward. The lever 213'3 on the sliding shaft 213, under the action of the inclined groove portion 212'1 of the guide groove 212, drives the rotating ring 206 to deflect. When the rotating ring 206 deflects, the second lever 209 on it pushes the first lever 202'5, causing multiple pawls 202 to rotate along the rotating shaft 202'1 towards the center of the central shaft 201, thus causing the multiple pawls 202 to retract. At this time, the lever 213'3 on the sliding shaft 213 is engaged in the straight groove portion 212'2 of the guide groove 212, and the straight groove portion 212'2 restricts the multiple pawls 202 from resetting. Subsequently, the first engaging structure 214 is engaged with the second engaging structure 303, and the limiting member 203 on the pawl ring 20 is inserted into the wheel well 40. The limiting member 203' is connected to the anti-slip ring 407 via its ribs 203', ensuring the limiting member 203 is located outside the boss portion 302. Finally, the locating pin 103 on the cap 10 is aligned with the locating groove 205, and the axial connecting buckle 104 is aligned with the shaft disc 213'2 of the sliding shaft 213. The cap 10 is then pressed into the wheel well 40, and the connection is achieved through the axial limiting buckle 104. During the pressing of the cap 10 into the wheel well 40, the cap 10 pushes the sliding shaft 213 downwards, thereby releasing the restriction of the pawl 202 by the sliding shaft 213. The pawl 202 is then reset under the action of the spring 210, causing the pawl 202 to engage with the ratchet tooth 409, thus completing the installation. When the cap 10 is pulled upward, the positioning pin 103 remains in the positioning groove 205 and will not separate from the positioning groove 205.

[0030] Furthermore, existing tethering knob devices typically require the cord to be loosened or retracted by rotating the cap to move the pawl ring upwards, separating the pawl from the ratchet teeth, or by rotating the cap to move the pawl ring upwards, separating the first and second engaging structures, thus allowing the reel to rotate freely. Because the pawl ring 20 and ratchet teeth 409 are tightly engaged, after the pawl ring is separated from the ratchet teeth by rotating the cap upwards, it is difficult to perfectly re-engage the pawl ring into the ratchet teeth when moving downwards. Therefore, most existing tethering knob devices use rotating the cap to move the pawl ring upwards, separating the first and second engaging structures, to allow the reel to rotate freely. However, there are still cases where the first and second engaging structures cannot fully engage. The solution is to tilt the ribs on the engaging structures in one direction (see CN216796707U for specific structure). The cord loosening and retracting method of this invention, however, does not require rotating the cap to move the pawl ring upwards to achieve cord loosening or retracting.

[0031] In this embodiment, the pawl ring 20 is restricted from moving upward by the bone block 203'1 on the limiting member 203, meaning the pawl ring 20 can only rotate circumferentially within the wheel chamber 40. The axial connection port 104 on the cap 10 is connected to the shaft disc 213'2. When the rope needs to be loosened or tightened, the cap 10 is pulled upward, and the cap 10 drives the sliding shaft 213 to move upward through the axial connection port 104. When the sliding shaft 213 moves upward, the lever 213'3 on the sliding shaft 213 drives the rotating ring 206 to deflect under the action of the inclined groove portion 212'1 of the guide groove 212. When the rotating ring 206 drives the multiple pawls 202 to retract, the pawls 202 separate from the ratchet teeth 409, and the reel 30 rotates freely, completing the rope loosening or tightening.

[0032] Furthermore, the present invention also discloses a method for installing a lacing knob device, comprising the following steps: Step 1: Insert the spool 30 into the spool chamber 40, and insert the second limiting buckle on the spool chamber 40 into the first circumferential positioning groove on the base. The spool is fixed by the first limiting buckle on the spool chamber and the second circumferential positioning groove on the base, so that the spool is located between the spool chamber and the base. Step 2: Pull the sliding shaft upward. The lever on the sliding shaft drives the rotating ring to deflect under the action of the inclined groove of the guide groove. When the rotating ring deflects, it drives multiple pawls to retract and locks the lever on the sliding shaft into the straight groove of the guide groove to limit the reset of multiple pawls. Step 3: Connect the first locking structure with the second locking structure, and insert the limiting member into the wheel well. The limiting member is connected to the anti-skid ring through the bone block on the limiting member, so that the limiting member is located on the outside of the boss. Step 4: Align the locating pin on the cap with the locating groove, align the axial connecting buckle with the shaft disc of the sliding shaft, press the cap into the wheel chamber and connect it through the axial limiting buckle. During the process of pressing the cap into the wheel chamber, the cap will push the sliding shaft to move downward, thereby releasing the restriction of the sliding shaft on the pawl and completing the installation. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A belt-tie knob device, characterized in that, include: A screw cap, wherein the screw cap is provided with multiple positioning pins and multiple axial connecting buckles; A pawl ring includes a central shaft with a positioning groove at the top of the central shaft that matches the number of positioning pins. The positioning pins are inserted into the positioning grooves. Multiple pawls are circumferentially mounted on the central shaft. Each pawl consists of a pawl arm, a rotating shaft, and pawl teeth. The pawl arm is rotatably connected to the central shaft via the rotating shaft. A rotating ring is also rotatably connected inside the central shaft. A sliding shaft is provided on the inner shaft of the rotating ring. The sliding shaft moves along the axial direction of the rotating ring, causing it to deflect. A first pawl is provided at one end of the rotating shaft, and a second pawl is provided circumferentially on the rotating ring. When the rotating ring deflects, the pawl arm rotates along the rotating shaft towards the center of the central shaft under the action of the first and second pawls. A first engaging structure is provided at the bottom of the central shaft. The reel includes an I-shaped reel with a boss on its top surface and a second engaging structure on the inner sidewall of the boss. The first engaging structure engages with the second engaging structure. The wheel well includes an axial limiting ring, the inner wall of which is provided with a plurality of ratchet teeth, the pawls contacting the ratchet teeth, and the ratchet teeth being used to limit the pawl ring from rotating in one direction; The base includes an arc-shaped seat for mounting the wheel well, wherein... An extension shaft is fixedly installed at the bottom of the rotating ring, and the rotating ring is rotatably connected to the central shaft via the extension shaft. The sliding shaft is disposed inside the extension shaft and slides up and down along the extension shaft. A guide groove is provided on the side wall of the extension shaft. The sliding shaft consists of a shaft body, a shaft disc, and a lever. The lever is located in the guide groove. When the sliding shaft moves upward, it drives the rotating ring to deflect under the action of the guide groove. The guide groove includes an inclined groove portion and a straight groove portion. The cap is equipped with multiple axial limiting buckles, which connect the cap to the wheel well. These axial limiting buckles are also connected to a shaft disc on the sliding shaft, allowing the cap to move the sliding shaft up and down. The wheel well includes a body with two traction holes on one side. A rectangular groove and a first retaining buckle are also provided on the same side of the wheel well as the traction holes. The rectangular groove and the first retaining buckle are used to connect the wheel well to the base. A second retaining buckle is provided on the side of the wheel well away from the first retaining buckle. The second retaining buckle is inserted into the base to secure the wheel well. Positioning posts are respectively provided on both sides of the compartment body perpendicular to the first limiting buckle. The positioning posts are used to limit the circumferential movement of the compartment body. An anti-slip ring is installed in the middle of the bin. The diameter of this anti-slip ring is larger than the diameter of the boss but smaller than the diameter of the top surface of the I-shaped wheel, which allows the spool to remain inside the bin. The arc-shaped seat is also provided with two mounting slots for mounting and connecting the traction hole. The top of the arc-shaped seat is provided with a mounting surface that fits against the bottom surface of the wheel well. The arc-shaped seat is also provided with a circumferential limiting buckle. A first circumferential positioning groove is provided in the opposite direction of the circumferential limiting buckle, and a second circumferential positioning groove is provided on the same side as the circumferential limiting buckle.

2. The belt-tie knob device according to claim 1, characterized in that, When installing the wheel housing and the base, insert the second retaining buckle on the wheel housing into the first circumferential positioning groove on the base, and then fix it in place by the first retaining buckle on the wheel housing and the second circumferential positioning groove on the base, so that the spool is positioned between the wheel housing and the base. The arc-shaped seat is also provided with side positioning holes on both sides. When the second limiting buckle is inserted into the first circumferential positioning groove, the positioning pin is inserted into the side positioning hole, and the circumferential rotation of the wheel chamber is restricted by the positioning pin and the side positioning hole.

3. The belt-tie knob device according to claim 1, characterized in that, The bottom of the central shaft is provided with multiple limiting components, which are inserted into the wheel well. The outer side of the limiting components has bone blocks, and the axial movement of the pawl ring is restricted by the cooperation between the bone blocks and the wheel well.

4. A method for installing the lacing knob device according to claim 3, characterized in that, Includes the following steps: Step 1: Install the spool into the spool chamber and insert the second limiting buckle on the spool chamber into the first circumferential positioning groove on the base. The spool is fixed by the first limiting buckle on the spool chamber and the second circumferential positioning groove on the base, so that the spool is located between the spool chamber and the base. Step 2: Pull the sliding shaft upward. The lever on the sliding shaft drives the rotating ring to deflect under the action of the inclined groove of the guide groove. When the rotating ring deflects, it drives multiple pawls to retract and locks the lever on the sliding shaft into the straight groove of the guide groove to limit the reset of multiple pawls. Step 3: Connect the first locking structure with the second locking structure, and insert the limiting member into the wheel well. The limiting member is connected to the anti-skid ring through the bone block on the limiting member, so that the limiting member is located on the outside of the boss. Step 4: Align the locating pin on the cap with the locating groove, align the axial connecting buckle with the shaft disc of the sliding shaft, press the cap into the wheel chamber and connect it through the axial limiting buckle. During the process of pressing the cap into the wheel chamber, the cap will push the sliding shaft to move downward, thereby releasing the restriction of the sliding shaft on the pawl and completing the installation.

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