Waist support stool
By designing a lumbar support stool with a waistline support section and an adjustable lumbar support belt, the problem of lumbar fatigue caused by the lack of lumbar support function of the stool is solved. It achieves lumbar support and pressure distribution, improving the comfort and health protection of users.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO MUYE MATERNITY & BABY PRODUCTS CO LTD
- Filing Date
- 2025-07-14
- Publication Date
- 2026-05-29
AI Technical Summary
Existing lumbar support stools lack lumbar support, leading to lower back strain and potentially causing lumbar disc compression, lumbar kyphosis, or scoliosis. Furthermore, prolonged use can cause excessive compensation in the shoulder, neck, and back muscles, resulting in a chain reaction of fatigue.
A lumbar support bench was designed, comprising a lumbar bench body, shoulder straps, a main lumbar belt, and a lumbar support belt. The lumbar support belt is equipped with a lumbar support section. Through the detachable connection and length adjustment of the main lumbar belt and the lumbar support belt, the lumbar support and fixation are achieved, dispersing lumbar pressure and reducing the burden on muscles and spine.
It effectively reduces the burden on the lower back, improves comfort, reduces fatigue, and extends usage time. It is especially suitable for parents who hold their babies for long periods of time, protecting the health of the lumbar spine.
Smart Images

Figure CN224291604U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to an infant and toddler product, and more particularly to a lumbar support stool. Background Technology
[0002] In the current market for baby care tools, a convenient baby carrier has become widely used. It effectively reduces the burden on parents' backs, especially when carrying a baby for extended periods of time. This baby carrier is strapped to the adult's waist, comfortably securing the baby and reducing physical exertion and strain on parents, making baby care easier and more enjoyable.
[0003] However, existing waist stools do not have a lumbar support function, which can cause lumbar fatigue when used. Once the lumbar region is fatigued, the body may unconsciously adjust its posture in order to maintain balance, leading to overcompensation of the muscles in the shoulders, neck, back, and other areas, resulting in a chain of fatigue. The weight of an infant will exert downward vertical pressure on the lumbar region, which may lead to lumbar disc compression in the long term, and cause lumbar kyphosis or scoliosis, disrupting the physiological curvature. Summary of the Invention
[0004] The technical problem to be solved by this utility model is to provide a lumbar support stool that is compact in structure, reasonably designed, ergonomic, can effectively reduce the burden on the waist, and has a good effect in use.
[0005] This utility model provides a waist stool, comprising:
[0006] The waist stool body 1 is used to support infants and young children. The upper surface of the waist stool body 1 serves as the bearing surface, and the front end of the waist stool body 1 is provided with a protective body 2.
[0007] Shoulder strap 3 is connected to the waist stool body 1 and / or the protective body 2;
[0008] A waist belt is disposed at the rear end of the waist stool body 1 to support the waist stool body 1. The waist belt includes a main waist belt 6 that can fit against the front waist of the human body and a waist support belt 7 that can fit against the back waist of the human body and support the back waist. The waist stool body 1 is fixedly disposed at the front end of the main waist belt 6. The two ends of the main waist belt 6 form first connecting parts, and the two ends of the waist support belt 7 form second connecting parts. The two first connecting parts and the two second connecting parts are interconnected and at least one end is detachable, and the length of at least one end is adjustable.
[0009] In this application, the waist belt consists of a main waist belt 6 and a waist support belt 7. The waist support belt 7 provides support and fit for the waist, effectively distributing pressure on the waist, reducing discomfort caused by prolonged use, and improving the user experience. Specifically, when holding an infant, the load on an adult's waist mainly comes from the infant's weight. If the waist muscles and spine bear this load alone, fatigue is very likely. However, this application, by setting up a waist support belt, can fit the lower back and provide support, effectively distributing the load.
[0010] Furthermore, the waist support belt 7 is provided with several arc-shaped protrusions to form a waistline support part 71 for supporting the waist. The waistline support part 71 can support the waist, reduce the burden on the waist muscles and spine, and enhance the fit and comfort, so that the user can maintain a good posture and reduce fatigue when holding the baby for a long time.
[0011] Furthermore, the waistline support parts 71 are an even number and symmetrically arranged, with a gap between the two middle waistline support parts 71 to form a lumbar spine accommodating area, which can effectively support both sides of the lumbar spine, avoid compressing the lumbar spine, and further improve the user's comfort and health protection.
[0012] Furthermore, the lumbar support belt is made of breathable material, ensuring good breathability and preventing stuffiness even after prolonged use, resulting in a good user experience.
[0013] Furthermore, the length direction of the waistline support 71 is perpendicular or inclined to the length direction of the sheath belt 7. The vertical or inclined setting provides good support, effectively disperses waist pressure, reduces muscle fatigue, and improves user comfort.
[0014] Furthermore, the waistline support portion 71 is strip-shaped or elliptical.
[0015] Furthermore, the width of the lumbar support belt 7 is greater than the width of the main waist belt 6, which reduces the pressure of the main waist belt 6 on the abdomen and hips, while increasing the contact area between the lumbar support belt 7 and the lower back, improving the lumbar support effect, ensuring that the user's waist is evenly stressed when holding the baby for a long time, reducing local pressure concentration, and effectively preventing lumbar strain.
[0016] Furthermore, the width of the main waistband 6 and / or the lumbar support belt 7 is greater than or equal to 15 cm and less than or equal to 25 cm, ensuring a moderate coverage range, neither being too wide to affect movement nor too narrow to affect the support effect, providing a good user experience. Specifically, through the widened design, the pressure is dispersed to the pelvis. By using the wide waistband and hip support structure, part of the baby's weight is transferred to the pelvis (the hip bone is a hard bone structure with a much stronger bearing capacity than the lumbar muscles and intervertebral discs), making the waist change from the "main bearer" to the "coordinator", directly reducing the lumbar load. At the same time, a wide lumbar support belt structure is adopted to increase the contact area with the waist. With the baby's weight (pressure) remaining unchanged, the larger the force-bearing area, the smaller the pressure per unit area on the waist, avoiding local muscles and soft tissues from being fatigued due to excessive compression.
[0017] Furthermore, the waistline support part 71 is filled with flexible filler, which can achieve flexible contact, reduce hard compression, improve the fitting degree, and further relieve lumbar fatigue.
[0018] Furthermore, a support member is provided inside the waistline support part 71. The support member plays a supporting role for the lumbar support belt, enhancing the structural stability of the lumbar support belt, ensuring no deformation during use, and achieving reliable support for the waist.
[0019] Furthermore, the support member is made of hard plastic or metal.
[0020] Furthermore, the end of the main waistband 6 is arc-shaped, improving the use comfort, avoiding the formation of corners at the end that cause friction and compression to form discomfort, enhancing the softness of the overall wearing, ensuring no discomfort during long-term use, and providing a good user experience.
[0021] Furthermore, the upper edge and / or the lower edge of the lumbar support belt is an outwardly convex arc structure, and the width of the lumbar support belt decreases from the center to both ends; it can increase the support area of the center position for the lumbar spine, and the width at both ends is relatively small, reducing the influence on the hip, and improving the use comfort.
[0022] Furthermore, a first connecting belt 61 is provided on the first connecting part, a second connecting belt is provided on the second connecting part, and the first connecting belt and the second connecting belt are connected by a buckle 8. The buckle 8 includes a buckle female part and a buckle male part that can achieve quick connection, which can achieve the quick connection and separation of the main waistband 6 and the lumbar support belt 7, with simple operation and improved use convenience.
[0023] Furthermore, a D-ring is provided on the first connecting belt or the second connecting belt and can adjust the length. The D-ring is a connecting buckle in the shape of a "D", which is convenient for adjusting the tightness, adapting to different body type requirements, and ensuring a proper fit.
[0024] Furthermore, both ends of the main waist belt 6 and the lumbar support belt 7 are detachable and the distance between both ends is adjustable. This means that both ends of the main waist belt 6 and the lumbar support belt 7 are detachable, and the length (distance) between both ends of the main waist belt 6 and the lumbar support belt 7 is adjustable. This allows for quick installation and removal of the lumbar support belt, facilitating cleaning or replacement. For example, different specifications of lumbar support belts can be replaced according to different usage needs and user groups, achieving personalized customization. The adjustable distance between both ends can adapt to different body types and needs, ensuring that the lumbar support belt is always positioned at the optimal support level for the waist, maximizing support effectiveness and improving user comfort.
[0025] Furthermore, the heads of the shoulder straps 3 (two in total) are connected to the front end of the lumbar stool body 1, and the tails of the shoulder straps 3 are selectively connected to the protective body 2 or the lumbar stool body 1. That is, the tails of the shoulder straps 3 can be connected to the protective body 2, preferably to both sides of the protective body 2, or the tails of the shoulder straps 3 can be connected to both sides of the lumbar stool body. The tails of the shoulder straps 3 adopt a detachable structure, such as buckles or locks, and are detachably installed on both sides of the protective body 2 or the lumbar stool body 1. This allows for easy adjustment of the shoulder strap position according to usage needs, enhancing wearing flexibility and improving the overall user experience. A support strap 4 is connected between the upper end of the protective body 2 and the shoulder straps 3, which serves to fix and support the protective body or lumbar stool body, providing a more reliable fixation and ensuring that it does not shift or deviate during use, thus improving stability and further optimizing the user experience.
[0026] This utility model of a lumbar support stool consists of a main waist belt and a lumbar support belt. The lumbar support belt provides support and a snug fit for the lower back, effectively distributing pressure and reducing discomfort from prolonged use, thus improving the user experience. The lumbar support belt is detachable, allowing for quick installation and removal for easy cleaning or replacement. Different sizes of lumbar support belts can be used to suit different user needs and preferences, enabling personalized customization. The lumbar support belt features a waistline support section, providing further support to the lower back, reducing strain on the lumbar muscles and spine, while enhancing the fit and comfort. This allows users to maintain good posture and reduce fatigue even when holding a child for extended periods. Through optimized design, this utility model of a lumbar support stool improves overall stability and comfort, effectively reducing the burden on the user's lower back.
[0027] Extended usage time, especially suitable for parents who need to hold their babies for extended periods. Attached Figure Description
[0028] Figure 1 This is a schematic diagram of the structure of the lumbar support bench of this utility model;
[0029] Figure 2 This is a schematic diagram of the lumbar support stool of this utility model from another angle;
[0030] Figure 3 This is a side view of the lumbar support stool of this utility model;
[0031] Figure 4 This is a schematic diagram of the installation of the lumbar support stool of this utility model;
[0032] Figure 5 This is a schematic diagram of the structure of the lumbar support stool of this utility model;
[0033] Figure 6 This is a schematic diagram of the waist belt structure of the lumbar support stool of this utility model;
[0034] Figure 7 This is a schematic diagram of the lumbar support belt of the lumbar support stool of this utility model. Detailed Implementation
[0035] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.
[0036] See Figures 1-7 This utility model provides a lumbar support stool, including a stool body 1, shoulder straps 3, a main waist belt 6 and a lumbar support belt 7.
[0037] The waist stool body 1 is used to support infants and toddlers. The upper surface of the waist stool body 1 serves as the support surface, allowing the infant or toddler to sit on it. The waist stool body 1 is made of high-density sponge material, which is soft, comfortable, and provides good support. A layer of non-slip and wear-resistant fabric is wrapped around the waist stool body 1 to increase friction and prevent the infant or toddler from sliding. A guard 2 is located at the front of the waist stool body 1. The guard 2 is used to protect the infant or toddler's back (when sitting backward) or chest (when sitting forward), providing all-round protection and preventing the infant or toddler from leaning forward or backward, ensuring safety. The shoulder strap 3 connects to the waist stool body 1 and / or the guard 2. That is, the shoulder strap 3 can connect to the waist stool body 1, or to the guard 2, or to both the waist stool body 1 and the guard 2 simultaneously. It is used to stably fix the guard 2 or the waist stool body 1 through the shoulder strap and distribute some of the weight to the user's shoulders, reducing the burden on the waist and improving comfort during long-term use.
[0038] The waist belt is located at the rear end of the waist stool body 1 to support the waist stool body 1 and fix the waist stool body 1 to the user's waist. The waist belt includes a main waist belt 6 and a waist support belt 7 that are connected to each other. The main waist belt 6 can fit against the front waist (i.e., abdomen) of the human body, and the waist support belt 7 can fit against the back waist of the human body to achieve wrapping and support of the back waist. The waist stool body 1 is fixedly located at the front end of the main waist belt 6. The two ends of the main waist belt 6 form a first connecting part, and the two ends of the waist support belt 7 form a second connecting part. The two first connecting parts and the two second connecting parts are connected to each other and at least one end is detachable. At the same time, the length of at least one end is adjustable.
[0039] In this application, the waistband consists of a main waistband 6 and a lumbar support belt 7. The lumbar support belt 7 plays a role in supporting and fittingly fixing the waist, can effectively disperse the pressure on the waist, reduce the discomfort caused by long-term use, and enhance the user experience.
[0040] To improve the wearing comfort, the ends of the main waistband 6 are arc-shaped. When the two ends of the main waistband 6 bend backward and fit, it avoids the formation of corners at the ends, which may cause friction and pressure and thus discomfort, enhances the softness of the overall wearing, ensures no discomfort during long-term use, and provides a good user experience.
[0041] In this application, the first connecting part and the second connecting part are connected by a magic tape or a buckle, which is convenient for quick adjustment and disassembly, adapts to different body size requirements, and improves the usability.
[0042] To increase the support area for the waist, especially the lumbar region, in this application, the upper edge and / or the lower edge of the lumbar support belt is an outwardly convex arc structure, that is, the upper edge of the lumbar support belt is an upwardly convex arc edge, and the lower edge of the lumbar support belt is a downwardly convex arc edge, so that the width (in the height direction) of the entire lumbar support belt gradually decreases from the center to both ends; it can increase the support area for the lumbar vertebra at the center position, the width at both ends is relatively small, reduces the influence on the hip, improves the fitting degree for the entire waist, and has good use comfort.
[0043] In this embodiment, a first connecting belt is provided on the first connecting part, and a second connecting belt is provided on the second connecting part. The first connecting belt and the second connecting belt are connected by a buckle 8. The buckle 8 includes a buckle female part and a buckle male part that can achieve quick connection, which can achieve the quick connection and separation of the main waistband 6 and the lumbar support belt 7, with simple operation and improved usability. A Japanese character buckle is provided on the first connecting belt or the second connecting belt, and thus the length (tightness) can be adjusted. The Japanese character buckle is a connecting buckle in the shape of a Japanese character, which is convenient for adjusting the tightness, adapts to different body size requirements, and ensures the wearing fitting degree.
[0044] To achieve better use effects, both ends of the main waistband 6 and the lumbar support belt 7 in this application are detachably connected, and the distances between both ends are adjustable. That is, both ends of the main waistband 6 and both ends of the lumbar support belt 7 are detachably connected (by a buckle or a magic tape), and at the same time, the lengths (distances) between both ends of the main waistband 6 and both ends of the lumbar support belt 7 are adjustable (by a Japanese character buckle). It can achieve the quick loading and unloading of the lumbar support belt, is convenient for cleaning or replacement. For example, different specifications of lumbar support belts can be replaced according to different use requirements and user groups (different genders or different body sizes) to achieve personalized customized use; the distances between both ends are adjustable, can adapt to different body sizes and requirements, and make the lumbar support belt always located at the best support position on the human waist, ensuring the maximization of the support effect and enhancing the comfort of the user.
[0045] Several arc-shaped protrusions are provided on the inner side of the lumbar support belt 7 (facing the lower back) to form lumbar support sections 71. These lumbar support sections 71 are used to support the lower back, reducing the burden on the lower back muscles and spine, while enhancing the fit and comfort, allowing the user to maintain good posture and reduce fatigue even when holding a baby for a long time. There are an even number of lumbar support sections 71, which are symmetrically arranged on both sides. There is a gap between the two middle lumbar support sections 71, forming a lumbar spine accommodation area. When in use, the lumbar spine is located in this area. Within the lumbar spine support area, effective support can be provided to both sides of the lumbar spine, avoiding compression of the lumbar spine and further improving the user's comfort and health. The length direction of the waistline support 71 is perpendicular or inclined to the length direction of the protective belt 7, providing good support and effectively dispersing lumbar pressure, reducing muscle fatigue, and improving user comfort. In this embodiment, the waistline support 71 is strip-shaped or elliptical. In this embodiment, the waistline support is elliptical, with its length direction perpendicular to the length direction of the lumbar support belt, and the ratio of its major axis to its minor axis is (3-4):1. In this application, the protrusion height of the waistline support portion 71 is 1-5mm, and its edge connects to the lumbar support belt in a smooth transition manner, which can achieve better fit and avoid pressure concentration at the protrusion. The waistline support portion 71 is filled with flexible filler, such as memory foam, to increase softness and elasticity, achieve flexible contact, reduce hard pressure, further relieve lumbar fatigue, and improve fit and comfort. In order to prevent deformation, a support member is provided in the waistline support portion 71. The support member supports the lumbar support belt, enhances the structural stability of the lumbar support belt, ensures that it does not deform during use, and achieves reliable support for the waist. The support member can be made of hard plastic or metal.
[0046] To further enhance comfort, the lumbar support belt is made of breathable material, ensuring it stays cool and comfortable even after prolonged use, providing a pleasant user experience.
[0047] In this application, the width of the lumbar support belt 7 is greater than the width of the main lumbar belt 6. This reduces the pressure of the main lumbar belt 6 on the abdomen and hips, while increasing the contact area between the lumbar support belt 7 and the lower back, improving lumbar support and ensuring that the user's lower back is evenly stressed when holding a baby for extended periods, reducing localized pressure concentration and effectively preventing lumbar strain. In this embodiment, the width of the lumbar support belt 7 is greater than or equal to 15cm and less than or equal to 25cm, ensuring a moderate coverage area that is neither too wide to restrict movement nor too narrow to affect support, resulting in a good user experience.
[0048] There are two shoulder straps 3. The head of the shoulder strap 3 is connected to the front end of the waist stool body 1, and the tail of the shoulder strap 3 is connected to either the protective body 2 or the waist stool body 1. That is, the tail of the shoulder strap 3 can be connected to the protective body 2, preferably to both sides of the protective body 2, or the tail of the shoulder strap 3 can be connected to both sides of the waist stool body. The tail of the shoulder strap 3 adopts a detachable structure, such as a buckle or a lock, and is detachably installed on both sides of the protective body 2 or both sides of the waist stool body 1. The position of the shoulder strap can be adjusted according to the usage needs, enhancing the wearing flexibility and improving the overall user experience. A support strap 4 is connected between the upper end of the protective body 2 and the shoulder strap 3, which serves to fix and support the protective body or waist stool body, and provides a more reliable fixation, ensuring that it does not shift or deflect during use, improving stability, and further optimizing the user experience.
[0049] To prevent the shoulder straps from slipping outwards, a third connecting strap 5 is connected between the two shoulder straps, and the third connecting strap is connected by a buckle.
[0050] This lumbar support stool can achieve muscle relaxation and posture correction:
[0051] When holding an infant, the lower back muscles need to continuously contract to counteract the infant's weight and maintain body balance, which can lead to muscle tension and spasms over time. This application, by setting up a lumbar support belt structure, uses external support to "replace" some of the muscle exertion, allowing the lower back muscles to switch from "continuous work" to "moderate rest," relieving muscle fatigue and reducing continuous muscle tension.
[0052] If the lower back lacks support, adults may bend over, lean to the side, or stick out their abdomen to balance the baby's weight, leading to poor posture such as scoliosis and pelvic tilt, which in turn causes problems such as shoulder and neck pain and back stiffness. This application uses a lumbar support structure to fix the position of the lower back, forcibly maintain the correct standing or sitting posture, reduce postural compensation, make the whole body exert more balanced force, reduce fatigue in multiple parts from the root, and avoid compensation for poor posture.
[0053] This application aims to protect the lower back and reduce pressure by supporting the lumbar spine, distributing the load to the hips, relaxing the lumbar muscles, and correcting poor posture, thus making it easier for parents to hold their babies.
[0054] At the same time, the lumbar support belt provides indirect support and pressure distribution, thus protecting the abdomen (stomach).
[0055] Therefore, for mothers, especially those who have undergone cesarean sections, it can reduce abdominal tension and protect the wound. Specifically, the lumbar support belt can distribute pressure. The wide belt increases the pressure-bearing area and transfers weight to the hips, preventing the baby's weight from directly pressing on the abdominal incision area. It also reduces the concentration of abdominal pressure on the wound when the mother bends over while holding the baby, keeping the abdominal incision in a relatively pressure-free environment. Supporting the lower back can reduce the need for the mother to compensate with her abdominal muscles, such as using her belly to support her body for balance, thereby reducing abdominal muscle tension and preventing additional tension on the wound due to muscle contraction.
[0056] Whether a woman has a cesarean section or a vaginal delivery, her center of gravity shifts forward due to changes in abdominal shape after childbirth, making her prone to poor postures such as bending over and sticking out her abdomen, which can lead to uneven pressure on the abdomen. This application uses a lumbar support structure that can maintain the normal curvature of the lumbar spine, prevent compensatory postures, and force the mother to maintain an upright posture, so that the abdominal pressure is evenly distributed and that local areas (such as around the navel and lower abdomen) are not compressed or pulled due to posture deviation, thus protecting the recovery of abdominal tissues as a whole.
[0057] In summary, for postpartum women, the lumbar support stool of this application indirectly reduces tension, pressure and excessive exertion on the abdomen (or wound) by supporting, fixing, distributing pressure and correcting posture, creating a more stable and low-load environment for the recovery of abdominal tissues (wounds, muscles, pelvic floor muscles, etc.).
[0058] This utility model of a lumbar support stool consists of a main waist belt and a lumbar support belt. The lumbar support belt provides support and a snug fit for the lower back, effectively distributing pressure and reducing discomfort from prolonged use, thus improving the user experience. The lumbar support belt is detachable, allowing for quick installation and removal for easy cleaning or replacement. Different sizes of lumbar support belts can be used to suit different user needs and preferences, enabling personalized customization. The lumbar support belt features a waistline support section, providing further support to the lower back, reducing strain on the lumbar muscles and spine, while enhancing the fit and comfort. This allows users to maintain good posture and reduce fatigue even when holding a child for extended periods. Through optimized design, this utility model of a lumbar support stool improves overall stability and comfort, effectively reducing the burden on the user's lower back.
[0059] Extended usage time, especially suitable for parents who need to hold their babies for extended periods.
[0060] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. A lumbar support bench, characterized in that, include: The waist stool body is used to support infants and young children. The upper surface of the waist stool body serves as the bearing surface, and the front end of the waist stool body is provided with a protective body. Shoulder straps are connected to the waist stool body and / or the protective body; A waist belt is located at the rear end of the waist stool body to support the waist stool body. The waist belt includes a main waist belt that can fit against the front waist of the human body and a back support belt that can fit against the back waist of the human body and support the back waist. The waist stool body is fixedly located at the front end of the main waist belt. The two ends of the main waist belt form a first connecting part, and the two ends of the back support belt form a second connecting part. The two first connecting parts and the two second connecting parts are interconnected, and the length of at least one end is adjustable.
2. The lumbar support bench as described in claim 1, characterized in that: At least one end of the lumbar support belt is detachable.
3. The lumbar support bench as described in claim 1 or 2, characterized in that: Both ends of the main waist belt and the waist support belt are detachable, and the distance between both ends is adjustable.
4. The lumbar support bench as described in claim 1, characterized in that: The lumbar support belt has several arc-shaped protrusions that form a waistline support section for supporting the waist.
5. The lumbar support bench as described in claim 4, characterized in that: The waistline support is an even number and symmetrically arranged, with a gap between the two middle waistline support parts to form a lumbar spine accommodating area.
6. The lumbar support bench as described in claim 4, characterized in that: The waistline support is strip-shaped or elliptical, and its length direction is perpendicular to or inclined to the length direction of the waist support belt.
7. The lumbar support bench as described in claim 1, characterized in that: The width of the main waist belt and / or the waist support belt is greater than or equal to 15cm and less than or equal to 25cm.
8. The lumbar support bench as described in claim 4, characterized in that: The waistline support section is provided with flexible filler and / or support components.
9. The waist stool as described in claim 1, characterized in that: The upper and / or lower edges of the waist support belt are convex arc-shaped structures, and the width of the waist support belt decreases from the center to both ends.
10. The lumbar support bench as described in claim 1, characterized in that: The first connecting part is provided with a first connecting strap, and the second connecting part is provided with a second connecting strap. The first connecting strap and the second connecting strap are connected by a buckle.