guide device

Abstract

The application is a divisional application of application No. 2024118730750. The guide device disclosed in the embodiments of the application can force the guide wheel to translate from the initial position to the compensation position in the direction of approaching the first opening (i.e., the guide wheel in the direction of approaching the first opening) when the clothes drying rod with a horizontal deviation rises to the storage groove, so that the motor can continue to wind, and ensure that the other side of the clothes drying rod can also completely enter the storage groove, so that the clothes drying rod is perfectly hidden in the suspended ceiling, the operation is convenient, and the user experience is effectively improved.

Description

[0001] This application is a divisional application. The original application has the application number 2023102388294, the application date is March 10, 2023, and the invention title is "Guiding Device with Length Compensation Structure". Technical fields: This application relates to the technical field of clothes drying racks, and particularly to a guiding device. Background technology: An automatic clothes drying rack is a smart household appliance that is driven by an electric motor. The appliance mainly consists of a body, a power system, a control system, a lifting system, and a drying system. Its basic function is to provide intelligent and automated solutions for drying clothes and bedding for various types of households.

[0002] Patent CN202122511545.7 discloses a concealed double-pole clothes drying rack, which includes two parallel clothes drying devices and a drive device disposed between the two clothes drying devices; the clothes drying device includes a housing, and fixed pulleys are provided on both sides of the housing; a concealed box is provided below the housing, the bottom of the concealed box has a groove for accommodating the clothes drying rod, and the top of the concealed box has a through hole for passing through the rope.

[0003] As can be seen from the above solutions, existing double-pole clothes drying racks use two sets of motors to control the raising or lowering of the corresponding clothes drying poles. Typically, one motor simultaneously controls the winding or releasing of the cords on both sides of the corresponding clothes drying pole, thus raising or lowering the pole. However, during installation, due to manual installation by workers or process issues, there may be length errors in the cords on both sides, resulting in different heights on both sides of the clothes drying pole. When the motor winds up the cords on both sides, the side with the higher height of the clothes drying pole will reach the winding position first (i.e., when one side of the clothes drying pole touches the inside of the drying rack). At this point, the motor has completely wound up the cord on the shorter side and paused the winding process, unable to wind up the cord on the longer side, causing the clothes drying pole to stop rising. Meanwhile, the side with the lower height of the clothes drying pole has not yet been completely wound into the winding rack, resulting in the clothes drying pole not being fully retracted into the ceiling.

[0004] Existing double-pole clothes drying racks have guide devices on all four sides that correspond to the clothes ropes. However, these guide devices only guide the clothes ropes and do not provide any length compensation for them. This prevents each motor from fully winding up the clothes ropes on both sides, resulting in the clothes drying poles not being fully retracted into the ceiling. Summary of the Invention: In response to the technical problem mentioned above that the guide device on the existing double-pole clothes drying rack only serves to guide the rope and does not have the function of compensating for the length of the rope, which makes it impossible for each motor to fully wind up the rope on both sides, resulting in the clothes drying rod not being able to be fully retracted into the ceiling, this application provides a guide device.

[0005] The guiding device includes a housing, a first opening and a second opening on the housing, a pulley groove located between the first opening and the second opening, and a circumferentially rotatable guide wheel disposed in the pulley groove; The guide wheel has an initial position and a rope winding compensation position arranged sequentially in the horizontal direction. When the rope is wound up and tightened, the guide wheel can be translated from the initial position to the compensation position. The pulley groove is also provided with a limiting step corresponding to the pulley end body of the guide wheel. The limiting steps are all located on the outside of the corresponding pulley end body, and there is a gap between the limiting step and the outer contour of the pulley end body to form a limiting gap.

[0006] In this invention, when a clothesline with a horizontal deviation rises to the storage slot, the side of the clothesline with the higher height will reach the storage slot first. The connecting section on that side is completely retracted into the housing. The motor continues to wind up the traction section and tighten it. At this time, the tightened traction section forces the guide wheel to overcome the tension of the tensioning member, causing the guide wheel to move laterally from the initial position towards the compensation position (i.e., towards the direction closer to the first opening), thereby reducing the length of the rope inside the housing. This compensates for the winding length of the traction section, allowing the motor to continue winding up the traction section until the ropes on both sides are completely wound up and tightened by the motor. This ensures that the other side of the clothesline can also be completely inserted into the storage slot, allowing the clothesline to be perfectly hidden inside the ceiling. This facilitates operation and effectively improves the user experience. The upper limit step of the pulley groove ensures that when the rope slides along the guide wheel and deviates to the gap between the guide wheel and the housing, the rope can abut against the limit step and cannot get stuck in the limit gap, ensuring that the rope remains in abutting against the guide wheel. Attached image description: To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0007] Figure 1 This is a schematic diagram of the guiding device of the present invention; Figure 2 This is one of the exploded schematic diagrams of the guiding device of the present invention; Figure 3 This is a second exploded view of the guiding device of the present invention; Figure 4 This is the third exploded view of the guiding device of the present invention; Figure 5 for Figure 1 Along A Cross-sectional view of line A; Figure 6 for Figure 1 Along A A cross-sectional view of the guide device and rope assembly of line A (with the tensioning component in its initial state); Figure 7 for Figure 1 Along A A cross-sectional view of the guide device and rope assembly of line A (with the tensioning component in a tensioned state). Figure 8 for Figure 1 Along B Cross-sectional view of the guide device for line B (tensioning member in initial state); Figure 9 for Figure 1 Along B Cross-sectional view of the guide device for line B (with the tensioning component in a tensioned state); Figure 10 This is a side view of the guiding device of the present invention; Figure 11 for Figure 10 Along C Cross-sectional view of line C; Figure 12 This is one of the structural schematic diagrams of the guide device of the present invention assembled on a clothes drying rack (top cover of the hidden part of the clothes drying rack); Figure 13 This is a second schematic diagram of the guiding device of the present invention assembled on a clothes drying rack; Figure 14 This is a top view schematic diagram of the guide device of the present invention assembled on a clothes drying rack; Figure 15 for Figure 14 Along D Cross-sectional view of line D; Figure 16 for Figure 15 An enlarged schematic diagram of part E marked in the image; Figure 17 for Figure 12 An enlarged schematic diagram of part F marked in the figure. Detailed implementation method: To make the technical problems solved, the technical solutions, and the beneficial effects of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0008] When ordinal numbers such as "first" and "second" are mentioned in the embodiments of the present invention, unless they actually express the meaning of order according to the context, they should be understood as being used only for differentiation.

[0009] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0010] The guide device with length compensation structure of the present invention is designed for use with existing double-pole clothes drying racks. For example, due to installation or manufacturing processes, existing double-pole clothes drying racks have a certain length error in the rope length on both sides of each motor. Excessive length error is usually discovered during installation and can be adjusted immediately, while smaller error (generally within 15 mm) is usually only discovered during the use of the clothes drying rack. For example, when the clothes drying rod is raised to the ceiling for storage, it can be determined whether the clothes drying rod is flush with the ceiling, thus revealing the rope length error.

[0011] To compensate for the small length error between the two ropes, the present invention provides a guide device with a length compensation structure.

[0012] like Figures 1 to 17 As shown, the guide device with length compensation structure in this embodiment includes a housing 1. The housing 1 is provided with a first opening 15 and a second opening 16. The housing 1 is also provided with a pulley groove 11 with both ends communicating with the first opening 15 and the second opening 16 respectively. A guide wheel 2 is rotatably connected in the pulley groove 11. Specifically, such as Figures 6 to 9 As shown, in this embodiment, the guide wheel 2 has an initial position 7 and a rope winding compensation position 8 arranged sequentially in the horizontal direction in the pulley groove 11. The guide wheel 2 can move back and forth along the path between the initial position 7 and the rope winding compensation position 8. In this embodiment, the rope can be led out from the second opening 16 after passing around the guide wheel 2 through the first opening 15. The rope from the first opening 15 to the motor is the traction section 5, and the rope from the second opening 16 to the clothes drying rod is the connecting section 6. like Figures 2 to 11 As shown, the guide wheel 2 in this embodiment is provided with a connecting shaft 3, and the housing 1 is provided with a tension member 4 connected to the connecting shaft 3. When the tension member 4 is in the initial state, the guide wheel 2 can be positioned at the initial position 7 by the connecting shaft 3. Specifically, such as Figure 7 As shown, the dotted line represents the connection posture of the rope when the guide wheel 2 is in the initial position. This allows us to intuitively understand that when the clothesline with horizontal deviation 5 rises to the storage slot, the side of the clothesline with higher height will reach the storage slot first. The connecting section 6 on that side is completely stored in the housing 1. The motor continues to wind up the traction section 5 and tighten it. At this time, the tightened traction section 5 can force the guide wheel 2 to overcome the tension of the tension member 4 and drive the guide wheel 2 to move laterally from the initial position 7 to the compensation position 8 (i.e., the guide wheel 2 moves towards the first opening 15) to reduce the length of the rope in the housing 1. This compensates for the winding length of the traction section 5, allowing the motor to continue winding up the traction section 5 until the ropes on both sides are completely wound up and tightened by the motor. This ensures that the other side of the clothesline can also be completely inserted into the storage slot, making the clothesline perfectly hidden in the ceiling. This makes operation convenient and effectively improves the user experience.

[0013] Specifically, the rope located inside the housing 1 is a winding section 51. The two ends of the winding section 51 are connected to the traction section 5 and the connecting section 6, respectively. When the motor continues to wind the traction section 5 and tightens it, the traction section 5 can pull the winding section 51, causing it to deform in the length compensation direction inside the housing 1, and forcing the guide wheel 2 to move laterally towards the compensation position 8 (i.e. towards the direction closer to the first opening 15). At this time, the winding section 51 is in a length compensation state, and its length gradually decreases. The reduced length is compensated to the traction section 5, so that it can be continued to be wound by the motor.

[0014] Specifically, such as Figure 6 As shown, the dashed line represents the length compensation state 52 where the straight-line distance between the midpoint of the first opening 15 and the midpoint of the second opening 16 is the limit of the winding segment 51. At this time, the winding segment 51 is straight and at its shortest size. When the guide wheel 2 is in the initial position 7, the winding section 51 is curved. When the guide wheel 2 moves toward the compensation position 8, the winding section 51 also moves toward the compensation position 8 and gradually deforms from a curved shape to a straight shape, causing the length of the winding section 51 to gradually decrease.

[0015] Specifically, when the clothes drying rod descends into the storage slot, the ropes on both sides are relaxed, and the pressure on the guide wheel 2 is removed. At this time, the tension member 4 returns to its initial state and can directly pull the connecting shaft 3, thereby providing a pulling force to the guide wheel 2, pulling it to move away from the first opening 15 in the pulley groove 11, so that the guide wheel 2 is pulled back to the initial position 7. The transmission method is simple and reliable.

[0016] Specifically, the guide wheel 2 is rotatably connected to the connecting shaft 3. The guide wheel 2 can rotate relative to the rope in the pulley groove 11 to reduce the friction between the guide wheel 2 and the rope, making it easier for the motor to wind up the rope, reducing noise, and extending the service life of the guide wheel 2 and the rope.

[0017] like Figure 2 and Figure 9 As shown, the pulley groove 11 of this embodiment is provided with a limiting elongated hole 12 on its side wall. The guide wheel 2 can move along the limiting elongated hole 12 between the initial position 7 and the rope winding compensation position 8. That is, the major diameter of the limiting elongated hole 12 is the path between the initial position 7 and the compensation position 8. This path is the length compensation range. The extension direction of the limiting elongated hole 12 is transverse. The guide wheel 2 can reciprocate in the transverse direction within the pulley groove 11.

[0018] like Figure 2 , Figure 3 , Figure 8 , Figure 9 and Figure 11 As shown, the housing 1 in this embodiment is also provided with an assembly part 13. The assembly part 13 communicates with the pulley groove 11 through the limiting elongated hole 12, and the tension member 4 is assembled into the assembly part 13. Preferably, the inner wall of the assembly part 13 is close to or abuts against the side wall of the tension member 4. The assembly part 13 restricts the tension member 4 to prevent the tension member 4 from shifting position during the stretching process, so as to ensure the accuracy of the guide wheel 2 when it moves.

[0019] like Figure 2 , Figure 3 , Figure 8 , Figure 9 and Figure 11 As shown, the tension member 4 in this embodiment includes an elastic spring 41 and a first connecting member 42 and a second connecting member 43 disposed at both ends of the elastic spring 41. A fixing part 131 is provided in the assembly part 13. The first connecting member 42 is connected to the fixing part 131; the second connecting member 43 is connected to the connecting shaft 3. The elastic spring 41 has the advantages of simple structure, convenient assembly, simple and reliable transmission method, and low cost. Through the cooperation between the first connecting member 42 and the fixing part 131, and the cooperation between the second connecting member 43 and the connecting shaft 3, the elastic spring 41 is more firmly assembled in the assembly part 13 and can better pull the connecting shaft 3.

[0020] Preferably, in this embodiment, the fixing part 131 is a fixing post, and the first connecting member 42 is a first hook. The first hook is sleeved on the outside of the fixing post, and the assembly method is simple and quick.

[0021] Preferably, in this embodiment, the second connecting member 43 is a second hook, which is sleeved on the outside of the connecting shaft 3, and the assembly method is simple and quick.

[0022] like Figure 2 , Figure 3 and Figure 11 As shown, there are two assembly parts 13 in this embodiment, which are respectively located on both sides of the pulley groove 11. The elastic spring 41, the fixing part 131, the first connecting member 42 and the second connecting member 43 correspond to the assembly part 13 one by one. The two ends of the connecting shaft 3 pass through the corresponding limiting elongated holes 12 and extend into the assembly part 13 to connect with the second connecting member 43. This design makes the pull-back effect of the elastic spring 41 on the guide wheel 2 more stable and reliable.

[0023] like Figures 2 to 4 As shown, the guide wheel 2 in this embodiment includes a pulley center body 21 and two pulley end bodies 22 disposed at its two ends. The diameter of both ends of the pulley center body 21 is the same as the diameter of the end faces of the two pulley end bodies 22. The height of both ends of the pulley center body 21 gradually decreases towards its center to form an arc-shaped slope. With this design, the rope can be confined to the pulley center body 21 by the two pulley end bodies 22. When the clothes drying rod is in the rising or falling state, it can effectively prevent the rope from deviating on the guide wheel 2, prevent the rope from running into the gap between the guide wheel 2 and the housing, and ensure the normal operation of the clothes drying machine.

[0024] like Figures 2 to 7 As shown, the pulley groove 11 of this embodiment is also provided with two limiting steps 14 corresponding to the pulley end body 22. Each limiting step 14 is located on the outside of the corresponding pulley end body 22, and there is a gap between each limiting step 14 and the outer contour of each pulley end body 22 to form a limiting gap 141. The width of the limiting gap 141 is smaller than the diameter of the rope. This ensures that when the rope slides along the guide wheel 2 and deviates to the gap between the guide wheel 2 and the housing, the rope can abut against the limiting step 14 and cannot get stuck in the limiting gap 141, thus ensuring that the rope can maintain its abutment against the guide wheel 2 and will not fall into the gap between the guide wheel 2 and the housing.

[0025] like Figures 1 to 4 ,as well as Figure 11As shown, the cross-sectional shape of the first opening 15 in this embodiment is trumpet-shaped, and the end of the first opening 15 with a larger width dimension is far away from the guide wheel 2; The first opening 15 has a trumpet-shaped cross-section, forming a trumpet-shaped cable entry channel between its two ends. The width of the cable entry channel gradually decreases along the cable entry direction. The cable enters from the inlet end of the first opening 15 and then extends to the outlet end of the first opening 15 under the guidance of the cable entry channel. With this design, the inlet end of the first opening 15 can provide a larger cable entry range, making it easier for the cable to be inserted into the first opening 15. The cable entry channel can also provide a bending space for the cable, thereby increasing the cable entry angle between the cable and the first opening 15. like Figure 12 as well as Figure 17 As shown, compared to the existing guide device which uses a first opening 15 with no width variation and a cross-sectional shape that is roughly rectangular, requiring the addition of a guide member between the motor and the guide device to guide the rope so that the rope is parallel or nearly parallel to the direction of the first opening of the guide device before it can be inserted, the guide device of the present invention does not require a guide member to guide it, thus improving the speed at which the rope is assembled on the guide device.

[0026] Specifically, such as Figure 11 As shown, the wire entry angle in this embodiment is the angle β between the central axis of the first opening 15 and the wire. Among them, the dotted line represents the central axis of the first opening 15, and the dashed line represents the direction of the existing rope entering the line; Specifically, in this embodiment, the width of the outlet end of the first opening 15 is smaller than the width of the guide wheel 2, so that a limiting structure is formed at the first opening 15. When the rope is being wound or released, the side wall of the outlet end of the first opening 15 can prevent the rope from deviating, so that the rope is kept on the guide wheel 2 and the rope is prevented from running into the gap between the guide wheel 2 and the housing 1. This design eliminates the need for guide components between the motor and the guide device inside the clothes dryer, allowing for fewer parts and a more compact structure. The guide device also provides guidance and limiting for the clothes cord, enhancing its functionality.

[0027] Preferably, the pulley groove 11 extends through the top of the housing 1, making the pulley groove 11 an open structure on the housing 1, which further improves the convenience of assembling the rope on the guide device.

[0028] Preferred, such as Figures 2 to 11 As shown, the housing 1 in this embodiment includes a top cover 17 and a base 18, which are detachably connected. The assembly part 13 is formed by the assembly of the two parts. The limiting elongated hole 12, the fixing post, the pulley groove 11, and the second opening 16 are all provided on the base 18. During assembly, the guide wheel 2 is first sleeved on the outside of the connecting shaft 3, and then the two elastic springs 41 are sleeved on the corresponding ends of the connecting shaft 3 through the second pull hook. Then, the guide wheel 2 is inserted into the pulley groove 11 through the opening above the pulley groove 11. Both ends of the connecting shaft 3 are inserted into the limiting elongated hole 12 through the opening above the corresponding limiting elongated hole 12. The two elastic springs 41 can be assembled into the corresponding assembly part 13 through the opening above the assembly part 13. At the same time, the two elastic springs 41 are sleeved on the outside of the corresponding fixing post through the first pull hook. Then the upper cover 17 is assembled onto the base 18. The upper cover 17 can close the opening of the assembly part 13 and the opening of the limiting elongated hole 12, thereby completing the assembly of the guide device.

[0029] Preferred, such as Figures 2 to 7 As shown, the upper cover 17 of this embodiment is also provided with a guide structure 172 for guiding the rope. The guide structure 172 is an arc-shaped guide plate located in the pulley groove 11. A guide space is formed inside the pulley groove 11. It works together with the guide wheel 2 to guide the rope from the first opening 15 to the second opening 16, so that the rope can be easily assembled on the housing.

[0030] Preferred, such as Figures 2 to 17 As shown, the housing 1 of this embodiment is also provided with a connecting assembly for connecting with the clothes drying rack. The connecting assembly includes four connecting posts disposed in the housing 1. The multiple connecting posts are disposed in the four corners of the housing 1. Each connecting post is provided with a threaded hole 132. The top of the cover 17 is also provided with a clearance hole 171 for avoiding the threaded hole 132. The assembled guide device is installed on the top of the clothes drying rack. Then, the screw passes through the clearance hole 171 and is threadedly connected to the first threaded hole 132. The top of the clothes drying rack also closes the upper opening of the pulley groove 11, making the structure between the clothes drying rack and the guide device more compact and reducing the volume of the guide device. Each assembly part 13 is provided with two connecting posts, which are located at both ends of the assembly part 13. The connecting post in each assembly part 13 that is away from the first opening 15 is a fixed post.

[0031] The working principle of the guide device with length compensation structure of the present invention: When the clothes drying rod on the automatic clothes drying machine is in the rising, lowering or drying state, the elastic spring 41 is in the initial state and pulls the connecting shaft 3 through the second hook so that the guide wheel 2 is maintained in the initial position 7 in the pulley groove 11. At this time, the traction section 5 is in a relaxed state on the guide wheel 2. When the clothesline rises into the storage slot, the side of the clothesline with the higher height will reach the storage slot first. The connecting section 6 on the rope on that side will be completely stored in the housing 1. The motor continues to wind up the traction section 5 and tighten it. At this time, the tightened traction section 5 can tighten the winding section 51, causing it to deform along the length compensation direction on the guide wheel 2, and the length gradually decreases. During the deformation process, the guide wheel 2 is forced to overcome the tension of the elastic spring 41 and move laterally towards the rope winding compensation position 8. The guide wheel 2 can also drive the elastic spring 41 to elastically deform through the connecting shaft 3 and perform a stretching action. The reduced length of the winding section 51 during deformation is used to compensate for the winding length of the traction section 5, so that the motor can continue to wind up the traction section 5 until the ropes on both sides are completely wound up and tightened by the motor, so as to ensure that the other side of the clothes drying rod can also be completely inserted into the storage groove, so that the clothes drying rod can be perfectly hidden in the ceiling. When the clothes drying rod is completely retracted into the storage slot, the winding section 51 can continuously press against the guide wheel 2, so that the elastic spring 41 remains in a stretched state; As the clothesline begins to descend, the rope becomes slack, and the pressure on the guide wheel 2 is gradually removed from the winding section 51. At this time, the elastic spring 41 deforms elastically, gradually compresses to return to its initial state, and pulls the connecting shaft 3 to move away from the first opening 15 and back to the initial position.

[0032] The above description provides one or more embodiments in conjunction with specific content, and does not imply that the specific implementation of the present invention is limited to these descriptions. Any methods or structures that are similar to or identical to those of the present invention, or any technical deductions or substitutions made based on the concept of the present invention, should be considered within the scope of protection of the present invention.

Claims

1. A guiding device, characterized in that, It includes a housing, a first opening and a second opening on the housing, a pulley groove located between the first opening and the second opening, and a circumferentially rotatable guide wheel disposed in the pulley groove; The guide wheel has an initial position and a rope winding compensation position set sequentially in the horizontal direction. When winding and tightening, the guide wheel can be translated from the initial position to the compensation position. The pulley groove is also provided with a limiting step corresponding to the pulley end body of the guide wheel. The limiting step is located on the outside of the corresponding pulley end body, and there is a gap between the limiting step and the outer contour of the pulley end body to form a limiting gap.

2. The guiding device as described in claim 1, characterized in that, The width of the limiting gap is smaller than the diameter of the rope.

3. The guiding device as described in claim 1 or 2, characterized in that, The rope can be led out from the second opening after passing over the guide wheel through the first opening. The rope from the first opening to the motor is the traction section, and the rope from the second opening to the clothesline is the connecting section. The traction section can drive the guide wheel to translate from the initial position to the rope winding compensation position.

4. The guiding device as described in claim 3, characterized in that, The guide wheel is equipped with a connecting shaft, and the housing is equipped with a tension member connected to the connecting shaft. The tension member is used to cooperate with the connecting shaft to pull the guide wheel back to its initial position after translation.

5. The guiding device as described in claim 4, characterized in that, The pulley groove has a limiting elongated hole on its side wall. The connecting shaft can pass through the limiting elongated hole and connect with the tensioning member. The connecting shaft can move along the limiting elongated hole between the initial position and the rope winding compensation position.

6. The guiding device as described in claim 5, characterized in that, The housing also has an assembly section, which is connected to the pulley groove through a limiting elongated hole, and the tensioning component is assembled into the assembly section.

7. The guiding device as described in claim 6, characterized in that, The inner wall of the assembly part is close to or abuts against the side wall of the tensioning part.

8. The guiding device as described in claim 7, characterized in that, The tensioning component includes an elastic spring and a first connecting member and a second connecting member respectively disposed at both ends of the elastic spring. A fixing part is provided in the assembly part, the first connecting member is connected to the fixing part, and the second connecting member is connected to the connecting shaft.

9. The guiding device as described in claim 8, characterized in that, The fixing part is a fixing post, the first connecting member is a first hook, and the first hook is sleeved on the outside of the fixing post; and / or the second connecting member is a second hook, and the second hook is sleeved on the outside of the connecting shaft.

10. The guiding device as described in claim 9, characterized in that, There are two assembly parts, located on both sides of the pulley groove. The elastic spring, the fixing part, the first connecting member and the second connecting member correspond to the assembly part one by one. The two ends of the connecting shaft pass through the corresponding limiting holes and extend into the assembly part to connect with the second connecting member.

Images