Kneepad socks capable of adjusting kneepad tightness

Abstract

The invention belongs to the technical field of kneecap socks, and particularly relates to a kneecap sock capable of adjusting kneecap tightness. The knee-protecting sock comprises a sock body, wherein a knee-protecting pad is arranged on the sock body corresponding to the knee; a circle of upper adjusting rope group is arranged above the knee pad, and a circle of lower adjusting rope group is arranged below the knee pad; an elastic button is arranged between the upper adjusting rope set and the lower adjusting rope set, the end, close to the elastic button, of the upper adjusting rope set is connected into the elastic button, and the end, close to the elastic button, of the lower adjusting rope set is connected into the elastic button. And the upper adjusting rope group and the lower adjusting rope group are retracted into or released from the elastic button by rotating the elastic button. According to the knee-protecting sock, the tightness of the upper adjusting rope group and the lower adjusting rope group can be adjusted at the same time by rotating the elastic button, so that the knee-protecting sock is not only suitable for people with different leg types, but also can adjust the tightness of the knee-protecting part in good time according to the exercise intensity, so that the knee-protecting sock can be suitable for more diverse use environments.

Description

Technical Field

[0001] The invention belongs to the technical field of knee pads, and in particular relates to a knee pad with adjustable tightness. Background Art

[0002] Knee pads are an item to protect people's knees. Knee pads have at least two functions, one is braking, and the other is heat preservation. Many knee joint diseases are related to cold knees. Often the leg muscles feel very hot due to constant exercise, while the knees are not hot due to no muscle movement. When people feel that the heat dissipation of the legs is very comfortable, in fact, the knees are cold. At this time, if you wear knee pads, the heat preservation effect of the knee pads can be reflected.

[0003] Regarding the braking effect of knee braces: The knee joint is where the upper and lower leg bones meet, with a meniscus in the middle and a patella in front. The patella is stretched by two muscles and suspended in front of the leg bones. It is very easy to slide. In normal life, the patella can move normally in a small range in the knee area because it is not affected by external forces and there is no strenuous exercise. When people engage in strenuous exercise, it is easy for the patella to be pulled away from its original position, thereby causing diseases in the knee joint area. Wearing a knee brace can fix the patella in a relatively stable position to ensure that it is not easily injured.

[0004] At present, in order to facilitate wearing, many manufacturers have produced knee socks, which have knee pads at the knee position of the socks, the knee pads are set corresponding to the patella position, and an elastic strap is set above and below the knee pad; due to the difference in the thickness of each person's legs, a strap of a single tightness cannot be suitable for everyone, which results in the knee socks having poor knee protection effect.

[0005] Therefore, it is necessary to provide an improved technical solution to address the above-mentioned deficiencies in the prior art. Invention content

[0006] The purpose of the invention is to provide a knee pad sock with adjustable tightness, so as to at least solve the above-mentioned problems existing in the prior art.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] A knee sock with adjustable tightness, the knee sock comprising a sock body, and a knee pad is arranged on the sock body corresponding to the knee position;

[0009] An upper adjustment rope group is arranged above the knee pad, and a lower adjustment rope group is arranged below the knee pad;

[0010] An elastic button is arranged between the upper adjustment cord set and the lower adjustment cord set, one end of the upper adjustment cord set close to the elastic button is connected to the elastic button, and one end of the lower adjustment cord set close to the elastic button is connected to the elastic button;

[0011] The upper adjustment cord set and the lower adjustment cord set are retracted into or released from the elastic button by turning the elastic button.

[0012] As described above, the knee socks with adjustable tightness of the knee pads, preferably, the elastic button is arranged at the part of the sock body corresponding to the outer side of the thigh.

[0013] As described above, for the knee brace with adjustable tightness, preferably, the upper adjustment cord set and the lower adjustment cord set both include a thick cord portion and a thin cord portion, and the thin cord portion is used to connect with the elastic button.

[0014] As described above, for the knee-pad socks with adjustable tightness, preferably, the upper adjustment cord set and the lower adjustment cord set are both embedded in the sock body, and linings are provided on the inner sides of the upper adjustment cord set and the lower adjustment cord set.

[0015] As described above, the knee brace with adjustable tightness, preferably, an upper steering belt is provided on the upper part of the elastic button, the upper steering belt is at the same height as the thick rope part of the upper adjustment rope group, and the thin rope part of the upper adjustment rope group is connected to the elastic button after passing around the steering belt;

[0016] A lower steering belt is arranged at the lower part of the elastic button, and the lower steering belt is at the same height as the thick rope part of the lower adjustment rope group. After the thin rope part of the lower adjustment rope group passes around the steering belt, it is connected to the elastic button.

[0017] For the knee brace with adjustable tightness as described above, preferably, the thin cord portion accounts for 15%-25% of the overall length of the adjustment cord set.

[0018] As described above, the knee socks with adjustable tightness of the knee pads are preferably made of elastic bands with elasticity.

[0019] As described above, the knee socks with adjustable tightness of the knee pads, preferably, the elastic button comprises at least an upper cover, an inner toothed disc is arranged inside the upper cover, the center of the inner toothed disc is a hollow hole, and a plurality of elastic outer teeth are evenly distributed on the inner toothed disc;

[0020] A plurality of outer spur teeth are arranged in parallel on the outer side of the elastic outer tooth portion, a cavity is arranged on the inner side of the elastic outer tooth portion, a tensioning spring is arranged in the cavity, and the tensioning spring is used for tensioning the outer spur teeth outward.

[0021] As described above, the knee socks with adjustable tightness of the knee pads, preferably, the elastic button further comprises an I-wheel inner core, the I-wheel inner core comprises an I-wheel portion and a central shaft portion, and the central shaft portion is used to be installed in the hollow hole portion of the inner gear disc;

[0022] The I-shaped wheel portion is provided with two pairs of mounting holes, which are symmetrically arranged around the center of the I-shaped wheel portion. The thin rope portion of the upper adjustment rope group is installed in a pair of mounting holes of the I-shaped wheel portion, and the thin rope portion of the lower adjustment rope group is installed in another pair of mounting holes of the I-shaped wheel portion.

[0023] As described above, the knee socks with adjustable tightness of the knee pads, preferably, the elastic button further comprises an outer toothed disc and a base, the outer toothed disc is fixed on the base, and the base is used to be fixed on the sock body;

[0024] The upper part of the outer gear disc has an inner gear portion, the inner periphery of the inner gear portion has a circle of inner spur teeth, and the inner spur teeth are used to mesh with the outer spur teeth;

[0025] The lower part of the outer gear disc is provided with two through holes, and the two through holes are symmetrically arranged around the central axis of the outer gear disc. The thin rope part of the upper adjustment rope group passes through one of the through holes, and the thin rope part of the lower adjustment rope group passes through the other through hole.

[0026] Beneficial effects:

[0027] In the knee socks, the tightness of the upper adjustment rope group and the lower adjustment rope group can be adjusted simultaneously by turning the elastic button, so that the knee socks are not only suitable for people with different leg shapes, but also can adjust the tightness of the knee pad part in time according to the intensity of exercise, so that the knee socks can be suitable for more diverse usage environments.

[0028] The elastic buttons are arranged on the outer side of the thigh on the knee pads. After the user puts on the knee pads, the elastic buttons on the left and right knee pads will not interfere with each other, thereby reducing the influence of the elastic buttons on the user as much as possible.

[0029] The width of the thick rope portion is larger, so that the user feels more comfortable; the width of the thin rope portion is smaller, so that the thin rope portion is easier to retract into the elastic button.

[0030] The upper cover, the inner gear plate and the inner core of the I-shaped wheel are fixed as a whole, and the outer gear plate and the base are fixed as a whole; by rotating the upper cover forward or reversely, the upper adjustment rope group and the lower adjustment rope group can be put into or released from the elastic button, thereby realizing the adjustment of the tightness of the upper adjustment rope group and the lower adjustment rope group. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The drawings constituting part of the present application are used to provide a further understanding of the invention. The exemplary embodiments and descriptions of the invention are used to explain the invention and do not constitute an improper limitation on the invention. Among them:

[0032] Figure 1 A schematic diagram of the structure of an over-the-knee sock according to an embodiment of the present invention;

[0033] Figure 2 A schematic diagram of the structure of an elastic button according to an embodiment of the present invention;

[0034] Figure 3 for Figure 2 Schematic diagram of the AA section.

[0035] In the figure: 100, sock body; 1, upper adjustment rope group; a, thick rope part; b, thin rope part; 2, lower adjustment rope group; 3, elastic button; 31, upper cover; 32, inner toothed disc; 33, tensioning spring; 34, I-shaped wheel inner core; 35, outer toothed disc; 36, base; 4, upper steering belt; 5, lower steering belt. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0037] In the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. The terms "connected" and "connected" used in the present invention should be understood in a broad sense. For example, they can be fixedly connected or detachably connected; they can be directly connected or indirectly connected through intermediate components. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0038] The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0039] According to the specific embodiments of the present invention, Figure 1-3As shown, the present invention provides a knee-pad sock with adjustable tightness. The knee-pad sock comprises a sock body 100, and a knee pad is arranged on the sock body 100 at a position corresponding to the knee.

[0040] An upper adjustment rope group 1 is arranged above the knee pad, and a lower adjustment rope group 2 is arranged below the knee pad.

[0041] An elastic button 3 is arranged between the upper adjustment rope group 1 and the lower adjustment rope group 2. One end of the upper adjustment rope group 1 close to the elastic button 3 is connected to the elastic button 3, and one end of the lower adjustment rope group 2 close to the elastic button 3 is connected to the elastic button 3.

[0042] The upper adjustment cord set 1 and the lower adjustment cord set 2 are retracted into or released from the elastic button 3 by rotating the elastic button 3 .

[0043] In the knee brace, the elastic button 3 is turned clockwise to allow the upper adjustment cord set 1 and the lower adjustment cord set 2 to be simultaneously retracted into the elastic button 3, thereby shortening the length of the upper adjustment cord set 1 and the lower adjustment cord set 2 located outside, and tightening the upper adjustment cord set 1 and the lower adjustment cord set 2, so that the pressure of the knee brace can be more suitable for the user's own supporting strength, so that the user's knee patella area can be better supported and protected when the user is doing strenuous exercise.

[0044] Turn the elastic button 3 counterclockwise to release the elastic button 3 of the upper adjustment rope group 1 and the lower adjustment rope at the same time, thereby lengthening the outer length of the upper adjustment rope group 1 and the lower adjustment rope, and loosening the upper adjustment rope group 1 and the lower adjustment rope, so that the pressure of the user's knee pad is more comfortable and natural, so that when the user is not doing strenuous exercise, the user's knee patella area can get a certain support strength and also have a better sense of comfort.

[0045] That is, by turning the elastic button 3, the tightness of the upper adjustment rope group 1 and the lower adjustment rope group 2 can be adjusted at the same time, so that the knee socks are not only suitable for people with different leg shapes, but also can adjust the tightness of the knee pad part in time according to the intensity of exercise, so that the knee socks can be suitable for more diverse usage environments.

[0046] The elastic button 3 is arranged at the position of the sock body 100 corresponding to the outer side of the thigh. In one embodiment of the present application, the elastic button 3 is arranged at the outer side of the thigh on the knee pad sock. Specifically, the elastic button 3 on the right knee pad sock is located on the right side thereof, and the elastic button 3 on the left knee pad sock is located on the left side thereof; after the user puts on the knee pad sock, the elastic buttons 3 on the left and right knee pad socks will not interfere with each other, thereby minimizing the influence of the elastic button 3 on the user.

[0047] The upper adjustment cord set 1 and the lower adjustment cord set 2 both include a thick cord portion a and a thin cord portion b, and the thin cord portion b is used to connect with the elastic button 3 .

[0048] In one embodiment of the present application, the thick rope portion a has a larger width and a larger force-bearing area, so that the user feels more comfortable; the thin rope portion b has a smaller width and is connected to the elastic button 3. When the elastic button 3 rotates, the thin rope portion b is easier to retract into the elastic button 3.

[0049] The upper adjustment cord set 1 and the lower adjustment cord set 2 are both embedded in the sock body 100, and a lining is provided on the inner side of the upper adjustment cord set 1 and the lower adjustment cord set 2. In one embodiment of the present application, a lining is provided on both the upper adjustment cord set 1 and the lower adjustment cord to improve the wearing comfort of the user; in this embodiment, the lining can be made of a silicone material, and in other embodiments, the lining can be made of other materials, such as cotton, silicone, latex, elastic band, etc.

[0050] An upper steering belt 4 is provided on the upper part of the elastic button 3. The upper steering belt 4 is at the same height as the thick rope portion a of the upper adjustment rope group 1. The thin rope portion b of the upper adjustment rope group 1 passes around the steering belt and is connected to the elastic button 3.

[0051] A lower steering belt 5 is provided at the lower part of the elastic button 3 . The lower steering belt 5 is at the same height as the thick rope portion a of the lower adjustment rope group 2 . The thin rope portion b of the lower adjustment rope group 2 passes around the steering belt and is connected to the elastic button 3 .

[0052] In one embodiment of the present application, a steering belt is provided, which is firstly used to keep the upper adjustment rope group 1 and the lower adjustment rope group 2 as close as possible to the height of the sock body 100 where they are located, so that the upper adjustment rope group 1 and the lower adjustment rope group 2 can better fit the user's legs after contraction; secondly, the steering belt portion strengthens the strength of the sock body 100, making it less likely for the sock body 100 to be damaged at the steering belt portion, thereby increasing the service life of the knee socks.

[0053] The thin cord portion b accounts for 15%-25% of the overall length of the adjustment cord set. In this embodiment, the maximum contraction length of the adjustment cord set is the length of the thin cord portion b.

[0054] The thick rope part a is made of elastic band, latex or silicone. In this embodiment, the thick rope part a is made of elastic band, latex or silicone, so that the adjustment rope group itself has a certain elasticity, which not only improves the tightness adjustment of the knee-high socks, but also ensures that the user has a better use experience.

[0055] The elastic button 3 at least comprises an upper cover 31 , an inner toothed disc 32 is arranged inside the upper cover 31 , the center of the inner toothed disc 32 is a hollow hole, and a plurality of elastic outer teeth are evenly distributed on the inner toothed disc 32 .

[0056] A plurality of outer straight teeth are arranged in parallel on the outer side of the elastic outer tooth portion, and a cavity is arranged on the inner side of the elastic outer tooth portion, and a tension spring 33 is arranged in the cavity, and the tension spring 33 is used to tension the outer straight teeth outward. In this embodiment, the upper cover 31, the inner tooth disc 32, the outer tooth disc 35, the I-shaped wheel inner core 34 and the base 36 in the elastic button 3 are all made of engineering plastics, so that each component has a certain elastic deformation ability, which is more convenient for the assembly of the various components and the relative movement of the inner tooth disc 32 and the outer tooth disc 35.

[0057] In one embodiment of the present application, the inner toothed disc 32 can be fixed inside the upper cover 31 by bonding. Specifically, the non-elastic outer tooth portion on the inner toothed disc 32 is bonded to the upper cover 31. In other embodiments, a buckle can also be provided inside the upper cover 31, and the buckle can be clamped at other positions of the non-elastic outer tooth portion on the inner toothed disc 32. Such fixation can ensure that the elastic outer tooth portion on the inner toothed disc 32 undergoes elastic deformation.

[0058] A tensioning spring 33 is provided on the inner side of the elastic outer tooth portion to press the elastic outer tooth portion outward so that the elastic outer tooth portion is meshed with the inner tooth portion of the outer toothed disk 35; when the upper cover 31 is rotated, the elastic force of the tensioning spring 33 and the meshing force of the elastic outer tooth portion and the inner tooth portion are overcome to rotate the upper cover 31 relative to the inner toothed disk 32. After rotating into place, the tensioning spring 33 presses the elastic outer tooth portion to fix the upper cover 31 relative to the outer toothed disk 35.

[0059] The elastic button 3 also includes an I-wheel core 34, which includes an I-wheel portion and a central shaft portion. The central shaft portion is used to be installed in the hollow hole portion of the inner gear disk 32. In this embodiment, a protrusion is provided on the inner wall of the hollow hole portion, and a groove is provided on the outer peripheral surface of the central shaft portion. When the central shaft portion is installed in the hollow hole portion, the protrusion is stuck in the groove, so that the I-wheel core 34 is fixed relative to the inner gear disk 32.

[0060] Two pairs of mounting holes are arranged on the I-shaped wheel part, and the two pairs of mounting holes are symmetrically arranged around the center of the I-shaped wheel part. The thin rope part b of the upper adjustment rope group 1 is installed in a pair of mounting holes of the I-shaped wheel part, and the thin rope part b of the lower adjustment rope group 2 is installed in another pair of mounting holes of the I-shaped wheel part.

[0061] In one embodiment of the present application, the I-wheel inner core 34 is installed on the inner toothed disc 32. When the upper cover 31 drives the inner toothed disc 32 to rotate, the inner toothed disc 32 drives the I-wheel inner core 34 to rotate. At this time, the thin rope portions b of the upper adjustment rope group 1 and the lower adjustment rope group 2 are both wound around the I-wheel inner core 34, thereby changing the length of the upper adjustment rope group 1 and the lower adjustment rope group 2 outside the elastic button 3, and adjusting the tightness of the upper adjustment rope group 1 and the lower adjustment rope group 2.

[0062] The elastic button 3 also includes an outer toothed disc 35 and a base 36. The outer toothed disc 35 is fixed on the base 36, and the base 36 is used to be fixed on the sock body 100. In this embodiment, the base 36 can be provided with a plurality of holes to facilitate sewing the base 36 on the sock body 100. A plug is provided at the bottom of the outer toothed disc 35, and a socket is provided on the base 36 to facilitate plugging and fixing the outer toothed disc 35 on the base 36.

[0063] The upper part of the outer toothed disc 35 has an inner tooth portion, and the inner circumference of the inner tooth portion has a circle of inner spur teeth, and the inner spur teeth are used to mesh with the outer spur teeth; so that the inner tooth portion on the outer toothed disc 35 and the elastic outer tooth portion on the inner toothed disc 32 mesh with each other, when the upper cover 31 is rotated, it is necessary to overcome the meshing force between the elastic outer tooth portion and the inner tooth portion, so that the upper cover 31 rotates relative to the outer toothed disc 35, and after the rotation is in place, under the action of the spring, the elastic outer tooth portion and the inner tooth portion are re-engaged, so that the upper cover 31 is fixed relative to the outer toothed disc 35;

[0064] The lower part of the outer toothed disc 35 is provided with two through holes, which are symmetrically arranged around the central axis of the outer toothed disc 35. The thin rope part b of the upper adjustment rope group 1 passes through one of the through holes, and the thin rope part b of the lower adjustment rope group 2 passes through the other through hole.

[0065] In one embodiment of the present application, the base 36 is first sewn to the sock body 100, and then the inner toothed disc 32 is fixed to the upper cover 31, and then the outer toothed disc 35 is inserted into the outer periphery of the inner toothed disc 32; then the thin rope portion b of the upper adjustment rope group 1 is passed through a through hole on the outer toothed disc 35 and installed in a pair of mounting holes of the I-shaped wheel portion of the I-shaped wheel inner core 34, and the thin rope portion b of the lower adjustment rope group 2 is passed through another through hole on the outer toothed disc 35 and installed in another pair of mounting holes of the I-shaped wheel portion; then the central axis portion of the I-shaped wheel inner core 34 is plugged and fixed to the hollow hole portion of the inner toothed disc 32 so that the I-shaped wheel inner core 34 is fixed to the upper cover 31, and finally the plug on the outer toothed disc 35 is inserted into the jack of the base 36 to complete the assembly of the elastic button 3.

[0066] Among them, the upper cover 31, the inner gear plate 32 and the I-shaped wheel inner core 34 are fixed as a whole, and the outer gear plate 35 and the base 36 are fixed as a whole; by rotating the upper cover 31 forward or reversely, the upper adjustment rope group 1 and the lower adjustment rope group 2 can be put into or released from the elastic button 3, thereby realizing the adjustment of the tightness of the upper adjustment rope group 1 and the lower adjustment rope group 2.

[0067] It should be understood that the above description is merely exemplary and the embodiments of the present application do not limit this.

[0068] 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, improvements, etc. made within the spirit and principle of the present invention are within the scope of protection of the pending claims of the present invention.

Claims

1. A knee sock with adjustable tightness, characterized in that: The knee-protection socks include a sock body, and a knee-protection pad is arranged on the sock body corresponding to the knee position; An upper adjustment rope group is arranged above the knee pad, and a lower adjustment rope group is arranged below the knee pad; An elastic button is arranged between the upper adjustment cord set and the lower adjustment cord set, one end of the upper adjustment cord set close to the elastic button is connected to the elastic button, and one end of the lower adjustment cord set close to the elastic button is connected to the elastic button; The upper adjustment cord set and the lower adjustment cord set are retracted into or released from the elastic button by turning the elastic button.

2. The knee brace with adjustable tightness according to claim 1, characterized in that: The elastic button is arranged at the position of the sock body corresponding to the outer side of the thigh.

3. The knee brace with adjustable tightness according to claim 1, characterized in that: The upper adjustment cord set and the lower adjustment cord set both include a thick cord portion and a thin cord portion, and the thin cord portion is used to be connected to the elastic button.

4. The knee brace with adjustable tightness according to claim 3, characterized in that: The upper adjusting rope group and the lower adjusting rope group are both embedded in the sock body, and inner linings are arranged on the inner sides of the upper adjusting rope group and the lower adjusting rope group.

5. The knee brace with adjustable tightness according to claim 4, characterized in that: An upper steering belt is provided on the upper part of the elastic button, and the upper steering belt is at the same height as the thick rope part of the upper adjustment rope group. The thin rope part of the upper adjustment rope group passes around the steering belt and is connected to the elastic button; A lower steering belt is arranged at the lower part of the elastic button, and the lower steering belt is at the same height as the thick rope part of the lower adjustment rope group. After the thin rope part of the lower adjustment rope group passes around the steering belt, it is connected to the elastic button.

6. The knee brace with adjustable tightness according to claim 3, characterized in that: The thin rope portion accounts for 15%-25% of the overall length of the adjustment rope set.

7. The knee brace with adjustable tightness according to claim 3, characterized in that: The thick rope part is made of elastic band.

8. The knee brace with adjustable tightness according to claim 3, characterized in that: The elastic button at least comprises an upper cover, an inner toothed disc is arranged inside the upper cover, the center of the inner toothed disc is a hollow hole, and a plurality of elastic outer teeth are evenly distributed on the inner toothed disc; A plurality of outer spur teeth are arranged in parallel on the outer side of the elastic outer tooth portion, a cavity is arranged on the inner side of the elastic outer tooth portion, a tensioning spring is arranged in the cavity, and the tensioning spring is used for tensioning the outer spur teeth outward.

9. The knee brace with adjustable tightness according to claim 8, characterized in that: The elastic button further comprises an I-shaped wheel inner core, the I-shaped wheel inner core comprises an I-shaped wheel portion and a central shaft portion, and the central shaft portion is used to be installed in the hollow hole portion of the inner gear disc; The I-shaped wheel portion is provided with two pairs of mounting holes, which are symmetrically arranged around the center of the I-shaped wheel portion. The thin rope portion of the upper adjustment rope group is installed in a pair of mounting holes of the I-shaped wheel portion, and the thin rope portion of the lower adjustment rope group is installed in another pair of mounting holes of the I-shaped wheel portion.

10. The knee brace with adjustable tightness according to claim 9, characterized in that: The elastic button further comprises an outer toothed disc and a base, wherein the outer toothed disc is fixed on the base, and the base is used to be fixed on the sock body; The upper part of the outer gear disc has an inner gear portion, the inner periphery of the inner gear portion has a circle of inner spur teeth, and the inner spur teeth are used to mesh with the outer spur teeth; The lower part of the outer gear disc is provided with two through holes, and the two through holes are symmetrically arranged around the central axis of the outer gear disc. The thin rope part of the upper adjustment rope group passes through one of the through holes, and the thin rope part of the lower adjustment rope group passes through the other through hole.

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