Massage structure with variable inner diameter

Abstract

The application relates to a massage structure with variable inner diameter, and belongs to the technical field of massage equipment. The massage structure with variable inner diameter comprises a deformation assembly and a rotating sleeve, the deformation assembly is sleeved outside a first massage part; the deformation assembly comprises a deformation part, a constraint part and a first joint part, the constraint part and the first joint part are respectively located at two ends of the deformation part along a central axis L1 of the deformation assembly, and the constraint part is used for limiting the movement of the deformation part; the rotating sleeve is provided with a second joint part; the first joint part and the second joint part are coupled and linked, and the rotating movement of the rotating sleeve around the axis L1 is converted into the linear reciprocating movement of the first joint part along the axis L1; the first joint part moves close to or away from the constraint part along the axis L1, drives at least part of the deformation part to deform towards or away from the first massage part, and thus drives the inner diameter of the deformation assembly to decrease or increase. The massage structure with variable inner diameter provided by the application can realize smooth and stable adjustment of the inner diameter size.

Description

Technical Field

[0001] This application relates to the field of massage equipment technology, and more specifically, to a massage structure with a variable inner diameter. Background Technology

[0002] With social development and improved living standards, people's demand for health care and physical relaxation is increasing. Massage devices, as a convenient and effective physiotherapy tool, have been widely used in homes and professional settings. Among them, massage devices for the limbs typically adopt a ring-shaped or cylindrical structure, applying external pressure or internal air inflation to press muscles, thereby relieving fatigue and promoting blood circulation.

[0003] Existing wraparound massage structures have the following main shortcomings: Many massage devices have a fixed inner diameter, which cannot adapt to the circumference differences of different users or different parts of the same user, resulting in uneven massage pressure and affecting comfort and massage effect; some massage structures with adjustable functions usually use airbag inflation / deflation or simple mechanical locking methods. Airbag adjustment suffers from inaccurate pressure control, slow response, and noise, while mechanical locking adjustment is often graded, unable to achieve stepless adjustment, and the adjustment process is not smooth enough, resulting in a poor user experience; to achieve changes in inner diameter, some massage structures use elastic sleeves or flexible supports, but lack effective and reliable support and guidance during deformation, which may cause irregular deformation of the massage sleeve, making it impossible to accurately apply pressure to the target muscle groups, and may even affect the service life due to structural distortion.

[0004] Therefore, there is an urgent need in the field for a variable inner diameter massage structure that can achieve smooth and precise stepless adjustment while providing stable and reliable support during changes in inner diameter. Summary of the Invention

[0005] The purpose of this application is to provide a massage structure with a variable inner diameter that can achieve smooth and stable adjustment of the inner diameter size, thereby improving the above-mentioned problems.

[0006] This application is achieved through the following technical solution:

[0007] This application provides a massage structure with a variable inner diameter. The massage structure with a variable inner diameter includes a deformable component and a rotating sleeve. The deformable component is sleeved on the outside of a first massage part. The deformable component includes a deformable part, a constraining part, and a first engaging part. The constraining part and the first engaging part are respectively located at both ends of the deformable part along the central axis L1 of the deformable component. The constraining part is used to restrict the movement of the deformable part. The rotating sleeve is provided with a second engaging part. The first engaging part and the second engaging part are coupled and linked to convert the rotational motion of the rotating sleeve around the axis L1 into the linear reciprocating movement of the first engaging part along the axis L1. The first engaging part moves closer to or away from the constraining part along the axis L1, causing at least a portion of the deformable part to deform toward or away from the first massage part, thereby driving the inner diameter of the deformable component to shrink or increase.

[0008] In the technical solution of this application embodiment, the inner diameter is infinitely adjustable through the continuous rotation of the rotating sleeve. Users can finely adjust to the most comfortable and effective pressure value according to their own feelings, providing a better experience than traditional stepped adjustment and meeting users' personalized needs for massage pressure. The presence of the deformable component ensures that the massage sleeve will not twist or wrinkle during deformation, but will achieve uniform radial contraction and expansion, resulting in a uniform distribution of massage force, improving the massage effect and comfort, while also protecting the massage sleeve structure and extending its service life.

[0009] In some embodiments, the first engagement portion and the second engagement portion are threaded structures that mesh with each other; when coupled and linked, the rotating sleeve rotates, driving the first engagement portion to move linearly back and forth along the axis L1 through the threaded transmission.

[0010] In the technical solution of this application embodiment, the threaded transmission provides extremely high control precision, allowing users to perform fine, stepless pressure fine-tuning and more easily find the most suitable massage intensity. The threaded pair has self-locking characteristics. Once adjusted in place, without external torsional force, the thread engagement naturally prevents accidental movement of the first engagement part, thereby ensuring absolute pressure stability during the massage process and preventing loosening due to slight body movements. This application integrates the motion conversion mechanism into the mating surface between the rotating sleeve and the first engagement part, eliminating the need for additional complex parts, resulting in a very compact, robust, and durable overall structure with high transmission efficiency and long service life.

[0011] In some embodiments, the first joint is a column; the second joint is a waist-shaped groove; the column is movably disposed in the waist-shaped groove, and its outer peripheral surface is in contact with the inner wall of the waist-shaped groove; the length direction of the waist-shaped groove forms an angle α with the axis L1, and satisfies 90°>α>0; when coupled and linked, the rotating sleeve rotates, and the column is squeezed by the inner wall of the waist-shaped groove, driving the column to move along the length direction of the waist-shaped groove, thereby driving the first joint to move linearly back and forth along the axis L1.

[0012] In the technical solution of this application embodiment, the cooperation between the column and the waist-shaped groove is a surface contact, resulting in smooth transmission, the ability to withstand certain impacts and vibrations, and high operational reliability. By adjusting the included angle α and the smoothness of the contact surface, a very smooth and comfortable damping adjustment experience can be achieved, enhancing the product's overall quality.

[0013] In some embodiments, the system further includes a guide rail, which is arranged along the direction of axis L1; a first guide groove is provided on the first joint to cooperate with the guide rail; the cooperation between the guide rail and the first guide groove is used to constrain the movement direction of the first joint.

[0014] In the technical solution of this application embodiment, the cooperation between the guide rail and the first guide groove ensures that the first joint moves strictly along the axis L1, avoiding mechanism jamming, wear, or poor adjustment caused by deviation of the motion trajectory, and making the inner diameter adjustment process smooth and precise. The guide rail structure enhances the rigidity of the first joint when subjected to the reaction force of the deformation of the deformable part, preventing it from shaking and improving the stability and reliability of the entire deformable assembly under load.

[0015] In some embodiments, the rotating sleeve is further provided with a first limiting part; the first guide groove is provided with a second limiting part at one end along the axis L1 away from the constraint part; the first engaging part has two extreme positions when it moves linearly back and forth along the axis L1; in one extreme position, the first engaging part is blocked by the first limiting part; in the other extreme position, the second limiting part is blocked by the guide rail.

[0016] In the technical solution of this application embodiment, the limiting mechanism prevents structural damage such as excessive deformation of the deformable part and breakage of the component caused by excessive rotation by the user, improves the durability and reliability of the product, and ensures that the inner diameter of the massage sleeve always changes within the preset safe and effective range, avoiding massage pressure failure or damage to the massage sleeve itself due to exceeding the range.

[0017] In some embodiments, a massage sleeve with elasticity for covering the first massage area is also included; both the deformable component and the rotating sleeve are fitted on the outside of the massage sleeve, and the deformable component is used to provide support for the massage sleeve so that the inner diameter of the massage sleeve reaches a set size.

[0018] In some embodiments, the deformable portion has a strip-shaped structure; there are multiple deformable portions, and all deformable portions are arranged circumferentially around the massage sleeve.

[0019] In the technical solution of this application embodiment, the circumferential arrangement of multiple deformable parts allows the massage sleeve to contract evenly during adjustment, applying a wrapping, evenly distributed pressure to the wrapped limb, avoiding discomfort caused by single-point pressure and improving the comfort and effect of the massage. The multiple strip-shaped deformable parts together form a stable frame structure, significantly enhancing the rigidity of the entire deformable assembly, making it less prone to instability or twisting when subjected to the reaction force of the internal massage sleeve, thus ensuring long-term reliability.

[0020] In some embodiments, the deformable portion includes a deformable segment; when the deformable portion deforms toward the massage sleeve to reduce the inner diameter of the massage sleeve, the deformable segment constitutes the main deformation area.

[0021] In the technical solution of this application embodiment, by pre-setting the position of the deformable segment, the main points of application of pressure on the massage sleeve can be precisely controlled. This allows the massage force to act more accurately on specific muscle groups or acupoints of the limbs, improving the massage effect. Concentrating the deformation in the designed deformable segment avoids unpredictable stress concentration and fatigue damage in other areas of the deformable part. This is like setting a safe bending zone for the deformable part, ensuring its functionality while greatly improving the durability and reliability of the entire deformable assembly.

[0022] In some embodiments, the material hardness of the deformed section is lower than that of other parts of the deformed portion.

[0023] In the technical solution of this application embodiment, the mechanical properties of the material itself are used to control the deformation position, ensuring that the deformation of each product occurs precisely in the predetermined area during each use, thus guaranteeing the consistency of product performance. The soft deformable section can better absorb and disperse the stress generated during deformation, avoiding stress peaks at the connection between the rigid part and the deformable section, thereby improving the fatigue resistance of the deformable part and extending its service life.

[0024] In some embodiments, in a direction perpendicular to axis L1, the cross-sectional dimension of the deformed segment is smaller than the cross-sectional dimension of other parts of the deformed portion.

[0025] In the technical solution of this application embodiment, the deformation position is guided by geometric dimension control. The method is reliable, has good repeatability, and ensures the consistency and predictability of product performance.

[0026] In some embodiments, an auxiliary component is also included, which is sleeved on the outside of all deformable parts and is used to push the corresponding deformable part to protrude toward the massage sleeve; the deformable segment is the part on the deformable part that corresponds to the auxiliary component.

[0027] In some embodiments, the auxiliary component has a second guide groove adapted to the guide rail; the auxiliary component is configured to move along axis L1 to adjust its position on the deformed section of the deformable part.

[0028] In the technical solution of this application embodiment, the guide rail ensures the accuracy of the linear movement of the auxiliary component, enabling the user to accurately position the protrusion effect of the deformable segment to a specific location on the limb, thus achieving precise and controllable massage height. The guide structure prevents the auxiliary component from shaking or rotating during movement, ensuring the stability and smoothness of the adjustment process, and improving the product's texture and user experience.

[0029] In some embodiments, the deformable portion is composed of multiple support segments connected end to end by hinges.

[0030] In the technical solution of this application embodiment, each hinged support segment can independently generate an independent protrusion under the action of the auxiliary component, so that the massage sleeve can form a very localized pressure point, accurately stimulate acupoints or muscle pain points, and have a better massage effect; the chain structure is more flexible than the integral strip structure, and can better adapt to the peristalsis of the limbs and the subtle changes in shape of the muscles during the massage process, providing dynamic fit and avoiding the discomfort of excessive pressure.

[0031] In some embodiments, a third limiting part is provided at one end of the support segment; the third limiting part is located on the side of the support segment close to the massage sleeve; when the support segment rotates about its hinge point with the adjacent support segment to the extreme position away from the massage sleeve, the third limiting part is used to prevent it from rotating further.

[0032] In the technical solution of this application embodiment, the third limiting part provides a unified physical reference position for all support segments in the relaxed state. This ensures that after each massage, the massage sleeve can quickly return to the preset maximum inner diameter state, avoiding incomplete reset or jamming caused by the scattered rebound positions of the support segments, and improving the reliability and consistency of the massage structure's movement. The third limiting part prevents the support segments from rotating at excessive angles in the reverse direction, or even from excessive outward rotation in a reverse joint manner, thereby protecting the hinge from damage, maintaining the integrity and stability of the entire chain deformation structure, and extending its service life.

[0033] In some embodiments, the deformable portion includes a reset rope and a plurality of support segments; the surface of the support segment facing away from the constraint portion along axis L1 is a guide surface, which is used to contact adjacent support segments; the spacing between the guide surface and the constraint portion gradually decreases from the side of the guide surface facing away from the massage sleeve to the side of the guide surface close to the massage sleeve; a third joint is also provided on the side of the support segment facing away from the massage sleeve, for engaging with the end of the adjacent support segment facing away from the constraint portion; the reset rope is connected between the first joint and the constraint portion, and passes through the third joint of all support segments; the third joint is fixedly connected to the reset rope; the first joint moves linearly back and forth along axis L1 to tension or relax the reset rope.

[0034] In the technical solution of this application embodiment, the controllability and repeatability of the radial movement of the support segment are achieved by the relaxation overlap and tension reset mechanism of the reset rope and multiple support segments, combined with the precise guidance of the inclined guide surface, thus ensuring the uniformity and stability of the change in the inner diameter of the massage sleeve.

[0035] In some embodiments, the support segment is configured such that: when the first engagement moves toward the constraint portion, it is pushed by the first engagement portion to abut against the guide surface of the adjacent support segment, and moves along the guide surface until the third engagement portion engages with the adjacent support segment and overlaps itself with the adjacent support segment radially along the massage sleeve; when the first engagement portion moves away from the constraint portion, it is pulled by the reset rope to reset to a state where the surface perpendicular to the radial direction of the massage sleeve is flush with the adjacent support segment; and the plurality of support segments overlap radially along the massage sleeve to push the massage sleeve to deform.

[0036] In the technical solution of this application embodiment, the movement of the support segment is precisely guided, and goes through a process of pushing, abutting, sliding on the inclined plane, and overlapping, which ensures the synchronicity and consistency of the contraction of all support segments and avoids the risk of jamming or asynchrony during the movement.

[0037] In some embodiments, a protrusion is provided on the side of the first joint near the deformable portion; in the direction away from the first joint along axis L1, the first support segment is provided with a third guide groove for fitting the protrusion, the third guide groove cooperating with the protrusion to restrict the first support segment to have only the degree of freedom to move radially along the massage sleeve.

[0038] In the technical solution of this application embodiment, by limiting the movement of the first support segment to radial movement, it is ensured that the contraction process is a precise radial compression from the beginning, rather than a complex movement that may have an axial component. This guarantees the purity, synchronicity, and predictability of the contraction action of the entire deformable assembly. The massage structure provided by this application avoids energy loss and action delay caused by possible axial movement or slight rotation of the first support segment, enabling every minute displacement of the first joint to be efficiently and instantly converted into effective radial adjustment, thus improving the control accuracy and response speed of the system.

[0039] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0040] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 A schematic diagram of the external structure of a massage structure with a variable inner diameter provided in some embodiments of this application;

[0042] Figure 2 Schematic diagrams of the housing structure provided for some embodiments of this application;

[0043] Figure 3 A side view of a massage structure with a variable inner diameter provided in some embodiments of this application;

[0044] Figure 4 When the deformable component is in the relaxed state Figure 3 Sectional views at points A and A in the middle;

[0045] Figure 5 When the inner diameter of the massage sleeve is at its maximum Figure 3 Sectional views at points A and A in the middle;

[0046] Figure 6 When the deformable component is in the contracted state Figure 3 Sectional views at points A and A in the middle;

[0047] Figure 7 When the inner diameter of the massage sleeve is at its smallest Figure 3 Sectional views at points A and A in the middle;

[0048] Figure 8 This is a schematic diagram of the structure of the rotating sleeve provided in some embodiments of this application;

[0049] Figure 9 This is a schematic diagram of the structure of the deformable component provided in some embodiments of this application when it is in a relaxed state;

[0050] Figure 10 This is a schematic diagram of the structure of the deformable component provided in some embodiments of this application when it is in a contracted state;

[0051] Figure 11 Partial cross-sectional views of the cup body provided in some embodiments of this application;

[0052] Figure 12 A schematic diagram of the external structure of a cup body with an adjustment port provided in some embodiments of this application;

[0053] Figure 13 Cross-sectional view of a massage structure with a variable inner diameter including auxiliary components, provided for some embodiments of this application;

[0054] Figure 14 A cross-sectional view of a massage structure with a variable inner diameter after the position of the auxiliary component changes, as provided in some embodiments of this application;

[0055] Figure 15 This is a partial structural schematic diagram of a massage structure with a variable inner diameter provided in some embodiments of this application;

[0056] Figure 16 Schematic diagrams of the modified parts provided in some embodiments of this application;

[0057] Figure 17 A cross-sectional view of a deformable assembly when multiple support segments overlap radially along a massage sleeve, as provided in some embodiments of this application;

[0058] Figure 18 for Figure 17 Enlarged view of point B in the middle;

[0059] Figure 19 A schematic diagram illustrating the reset of multiple support segments to a flush state provided in some embodiments of this application;

[0060] Figure 20 for Figure 19 Enlarged view of point C in the middle.

[0061] Figure 21 This is a partial enlarged view of a deformable component provided in some embodiments of this application.

[0062] Icons: 1. Massage sleeve; 10. Entrance; 2. Deformation component; 20. Deformation part; 200. Deformation segment; 201. Support segment; 2010. Third limiting part; 2011. Guide surface; 2012. Third joint; 2013. Third guide groove; 202. Reset rope; 21. Constraint part; 22. First joint; 220. First guide groove; 2200. Second limiting part; 221. Protrusion; 3. Rotating sleeve; 30. Second joint; 31. First limiting part; 4. Cup body; 40. Adjustment ring; 41. Adjustment port; 42. Guide rail; 5. Cover body; 6. Auxiliary part; 60. Second guide groove; 61. Adjustment knob; 62. Spring piece. Detailed Implementation

[0063] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0064] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0065] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0066] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" 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 direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0067] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0068] In this application, "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0069] According to some embodiments of this application, optionally, such as Figures 1-7 As shown, this application provides a massage structure with a variable inner diameter. The massage structure with a variable inner diameter includes a deformable component 2 and a rotating sleeve 3. The deformable component 2 is sleeved on the outside of the first massage part. The deformable component 2 includes a deformable part 20, a constrained part 21, and a first engaging part 22. The constrained part 21 and the first engaging part 22 are located at the two ends of the deformable part 20 along the central axis L1 of the deformable component 2, respectively. The constrained part 21 is used to restrict the movement of the deformable part 20. The rotating sleeve 3 is provided with a second engaging part 30. The first engaging part 22 and the second engaging part 30 are coupled and linked to convert the rotational motion of the rotating sleeve 3 around the axis L1 into the linear reciprocating movement of the first engaging part 22 along the axis L1. The first engaging part 22 moves closer to or away from the constrained part 21 along the axis L1, causing at least part of the deformable part 20 to deform toward or away from the first massage part, thereby driving the inner diameter of the deformable component 2 to shrink or increase.

[0070] The massage sleeve 1 can be fitted with mechanical components that perform massage actions such as vibration, swinging, and telescopic movement.

[0071] In the specific implementation process, it also includes a massage sleeve 1 that is elastic and used to cover the first massage area; the deformation component 2 and the rotating sleeve 3 are both sleeved on the outside of the massage sleeve 1. The deformation component 2 is used to provide support for the massage sleeve 1 so that the inner diameter of the massage sleeve 1 reaches the set size. The user can directly massage the first massage component by relying on the deformable part 20, or the user can massage the first massage area by deforming the inner diameter of the massage sleeve 1 through the deformation of the deformation part 20.

[0072] During use, the user inserts the first massage part into the elastic massage sleeve 1. At this time, the deformable component 2 provides an initial support inner diameter for the massage sleeve 1.

[0073] When the user wishes to increase the massage pressure, the rotating sleeve 3, which is fitted onto the outside of the massage sleeve 1, is rotated clockwise (or counterclockwise). The second engagement portion 30 on the rotating sleeve 3 is coupled and linked to the first engagement portion 22 of the deformation component 2, converting the rotational motion into a linear movement of the first engagement portion 22 along the central axis L1 toward the restraint portion 21. This movement forces at least a portion of the deformation portion 20 (generally the middle section) to bend and deform toward the center of the massage sleeve 1. The deformation portion 20, like "ribs," presses the massage sleeve 1 inward, thereby uniformly and continuously reducing the inner diameter of the massage sleeve 1, more tightly covering the user's first massage area, and applying the required massage pressure.

[0074] When the user wishes to relieve pressure or remove the device, the rotating sleeve 3 is rotated counterclockwise (or clockwise). Through the same coupling linkage mechanism, the first engaging part 22 is driven to move away from the restraining part 21 along the axis L1. At this time, the deformable part 20, relying on the elasticity or structural properties of its own material, gradually recovers its deformation under the limitation of the restraining part 21 and moves away from the massage sleeve 1, thereby releasing the squeezing force on the massage sleeve 1, making the inner diameter of the massage sleeve 1 increase and become looser.

[0075] This application achieves stepless adjustment of the inner diameter through the continuous rotation of the rotating sleeve 3. Users can finely adjust to the most comfortable and effective pressure value according to their own feelings, providing a superior experience compared to traditional stepped adjustment and meeting users' personalized needs for massage pressure. The presence of the deformation component 2 ensures that the massage sleeve 1 will not twist or wrinkle during deformation, but will achieve uniform radial contraction and expansion, resulting in even distribution of massage force, improving massage effect and comfort, while also protecting the structure of the massage sleeve 1 and extending its service life.

[0076] In the specific implementation process, such as Figures 1-7 As shown, it also includes a cup body 4 with an opening. A massage sleeve 1, a deformable component 2, and a rotating sleeve 3 are all disposed inside the cup body 4. The massage sleeve 1 has an inlet 10 for the first massage part to be inserted, and the inlet 10 of the massage sleeve 1 extends beyond the opening of the cup body 4. A rotatable adjustment ring 40 is provided on the cup body 4. The center of the adjustment ring 40 is located on the axis L1. The adjustment ring 40 is engaged with the rotating sleeve 3 and rotates synchronously with the rotating sleeve 3. The rotating sleeve 3 is located on the side of the cup body 4 along the axis L1 close to the opening. The restraint part 21 is fixedly connected to the bottom wall of the cup body 4 away from the opening, allowing the user to hold the cup body 4 and use the massage structure provided in this application. The deformable component 2 is separated from the user's hand, preventing the deformation of the deformable part 20 from pinching or even injuring the user, and also preventing the user's hands or other limbs from affecting the normal operation of the deformable component 2.

[0077] Specifically, such as Figure 1 , Figures 3-7 As shown, it also includes a cover 5, which is placed on the side of the cup body 4 near the opening to close the entrance 10 of the massage sleeve 1, so that the internal space of the massage sleeve 1 forms a closed cavity.

[0078] Specifically, the regulating ring 40 can be connected to a servo motor, or it can be manually driven by the operator to rotate forward or in reverse.

[0079] The outer circumference of the adjustment ring 40 is also provided with a scale to help the user control the inner diameter of the massage sleeve 1.

[0080] To accommodate different body curves, the deformable part 20 can be designed as a modular unit that can be quickly disassembled and replaced. For example, for areas with abundant muscle, a deformable part 20 module with lower rigidity and greater deformation can be used; for areas with prominent bones, a rigid module that provides stronger support can be used instead. This allows the massage structure provided in this application to be adapted to various massage scenarios by changing parts.

[0081] According to some embodiments of this application, optionally, such as Figures 4-8 As shown, the first joint 22 and the second joint 30 are threaded structures that mesh with each other; when coupled and linked, the rotating sleeve 3 rotates, and drives the first joint 22 to move linearly back and forth along the axis L1 through the threaded transmission.

[0082] Scale lines or tactile bumps can be provided on the rotating sleeve 3 or the first joint 22. When the user rotates the rotating sleeve 3, they can quantify the degree of adjustment by observing the changes in the scale or feeling the tactile feedback during the rotation, thus enhancing the product's interactive experience.

[0083] Specifically, the first engagement portion 22 is implemented as a nut or a sleeve with internal threads, while the second engagement portion 30 provided on the rotating sleeve 3 is a corresponding external thread. The two are engaged together by the threads.

[0084] When the user needs to adjust the massage pressure, they simply rotate the rotating sleeve 3. Since the first engagement portion 22 is restricted from circumferential rotation by the constraint portion 21 and / or other limiting components via the deformation assembly 2 it resides in, it cannot rotate with the rotating sleeve 3. Therefore, the rotational motion of the rotating sleeve 3 is directly converted by the threaded pair, forcing the first engagement portion 22 to reciprocate linearly along the central axis L1.

[0085] The threaded drive provides extremely high control precision, allowing users to make delicate, stepless pressure adjustments and more easily find the most suitable massage intensity. The threaded pair has a self-locking characteristic. Once adjusted, without external torsional force, the thread engagement naturally prevents accidental movement of the first engagement 22, thus ensuring absolute pressure stability during the massage process and preventing loosening due to slight body movements. This application integrates the motion conversion mechanism into the mating surface between the rotating sleeve 3 and the first engagement 22, eliminating the need for additional complex parts, resulting in a very compact, robust, and durable overall structure with high transmission efficiency and long service life.

[0086] According to some embodiments of this application, optionally, such as Figures 9-10As shown, the first joint 22 is a column; the second joint 30 is a waist-shaped groove; the column is movably disposed in the waist-shaped groove, and its outer circumferential surface is in contact with the inner wall of the waist-shaped groove; the length direction of the waist-shaped groove forms an angle α with the axis L1, and satisfies 90°>α>0; when coupled and linked, the rotating sleeve 3 rotates, and the column is squeezed by the inner wall of the waist-shaped groove, driving the column to move along the length direction of the waist-shaped groove, thereby driving the first joint 22 to move linearly back and forth along the axis L1.

[0087] The waist-shaped groove mentioned in this application is a closed, straight groove structure with rounded ends. This structure can always constrain the column within the waist-shaped groove, preventing it from detaching during movement and ensuring the integrity of the mechanism.

[0088] When the user rotates the rotating sleeve 3, the inclined waist-shaped groove rotates along with it. Since the column itself is constrained and cannot rotate freely, the inner wall of the waist-shaped groove continuously presses against the column as it rotates. This pressing force can be decomposed into two components: a radial force perpendicular to axis L1, which is counteracted by the structure; and an axial force parallel to axis L1. It is under the drive of this axial force that the column is forced to move relative to the waist-shaped groove along its length. Because the waist-shaped groove is inclined, this relative sliding of the column within the groove directly manifests as the entire first joint 22 reciprocating along axis L1, thereby causing the deformation part 20 to deform and achieving adjustment of the inner diameter of the massage sleeve 1.

[0089] The fit between the column and the waist-shaped groove is a surface contact, resulting in smooth transmission, the ability to withstand certain impacts and vibrations, and high operational reliability. By adjusting the included angle α and the smoothness of the contact surface, a very smooth and comfortable damping adjustment experience can be achieved, enhancing the product's overall quality.

[0090] According to some embodiments of this application, optionally, such as Figures 4-7 , Figures 9-11 As shown, it also includes a guide rail 42, which is arranged along the axis L1; a first guide groove 220 is provided on the first joint 22 to cooperate with the guide rail 42; the cooperation between the guide rail 42 and the first guide groove 220 is used to constrain the movement direction of the first joint 22.

[0091] In practical applications, when the rotating sleeve 3 rotates and attempts to drive the first joint 22 to move through the coupling linkage mechanism, the cooperation between the guide rail 42 and the first guide groove 220 plays a decisive constraining role. It effectively restricts the degree of freedom of the first joint 22, preventing it from rotating circumferentially with the rotating sleeve 3, while strictly limiting its movement path to a direction parallel to the axis L1. This ensures that the first joint 22 can only perform the designed linear reciprocating movement without any offset or jamming, thus efficiently and accurately converting the rotational power of the drive mechanism into the linear power required to adjust the inner diameter of the massage sleeve 1.

[0092] The cooperation between the guide rail 42 and the first guide groove 220 ensures that the first joint 22 moves strictly along the axis L1, avoiding mechanism jamming, wear, or poor adjustment caused by deviation in the movement trajectory, and making the inner diameter adjustment process smooth and precise. The structure of the guide rail 42 enhances the rigidity of the first joint 22 when it is subjected to the reaction force of the deformation of the deformable part 20, preventing it from shaking and improving the stability and reliability of the entire deformable assembly 2 under load.

[0093] In the specific implementation process, such as Figures 4-7 , Figure 11 As shown, the guide rail 42 is disposed on the inner wall of the cup body 4.

[0094] The guide rail 42 and the inner wall of the cup body 4 can be designed for detachable installation. When it is necessary to replace or maintain the internal massage sleeve 1 or the deformable component 2, the guide rail 42 can be removed and the deformable component 2 can be taken directly out of the cup body 4, realizing the quick separation and assembly of the core components, which facilitates the cleaning and maintenance of the product.

[0095] The number of guide rails 42 can be multiple, and multiple first guide grooves 220 are correspondingly provided on the first joint 22.

[0096] According to some embodiments of this application, optionally, such as Figures 4-11 As shown, the rotating sleeve 3 is also provided with a first limiting part 31; the first guide groove 220 is provided with a second limiting part 2200 at one end along the axis L1 away from the constraint part 21; the first joint part 22 has two extreme positions when it moves linearly back and forth along the axis L1; in one extreme position, the first joint part 22 is blocked by the first limiting part 31; in the other extreme position, the second limiting part 2200 is blocked by the guide rail 42.

[0097] The first limiting part 31 acts on the first engaging part 22 itself, responsible for restricting its movement away from the restraining part 21; while the second limiting part 2200 acts on the fixed guide rail 42, restricting the forward movement of the first engaging part 22 through the cooperation of the guide rail 42 and the first guide groove 220. The two work together to define the complete movement stroke of the first engaging part 22.

[0098] The contact surfaces of the first limiting part 31 and / or the second limiting part 2200 can be reinforced with elastic cushioning material (such as rubber pads or silicone parts). When the first engaging part 22 moves to its limit position, the first engaging part 22 or the guide rail 42 contacts the buffer, which can effectively absorb impact energy and reduce noise.

[0099] Specifically, a first limiting part 31 is provided on the rotating sleeve 3, which can be an inwardly protruding boss or a stop. At the same time, a second limiting part 2200 is provided at one end of the first guide groove 220 along the axis L1 away from the constraint part 21, which can be a widened groove edge or a special stop.

[0100] When the user rotates the rotating sleeve 3 for adjustment, the first joint 22 moves along the axis L1, and its travel is automatically terminated at two extreme positions:

[0101] Minimum inner diameter position: When the first joint 22 moves towards the constraint 21 to its end point, the fixed guide rail 42 will contact the second limiting part 2200, and the guide rail 42 will be blocked by the second limiting part 2200. At this time, the user will feel resistance to rotation, indicating that the inner diameter of the massage sleeve 1 has shrunk to the minimum value allowed by the design.

[0102] Maximum inner diameter position: When the first joint 22 moves away from the restraint 21 to its end point, its body or the structure fixed to it will come into contact with and be blocked by the first limiting part 31 on the rotating sleeve 3. At this time, the user will feel a significant increase in rotational resistance and will be unable to continue rotating, indicating that the inner diameter of the massage sleeve 1 has expanded to the maximum value allowed by the design.

[0103] The limiting mechanism prevents structural damage such as excessive deformation of the deformable part 20 and component breakage caused by excessive rotation by the user, improves the durability and reliability of the product, and ensures that the inner diameter of the massage sleeve 1 always changes within the preset safe and effective range, avoiding massage pressure failure or damage to the massage sleeve 1 itself due to exceeding the range.

[0104] According to some embodiments of this application, optionally, such as Figure 4 , Figure 6 , Figures 9-10 As shown, the deformable part 20 has a strip-shaped structure; there are multiple deformable parts 20, and all deformable parts 20 are arranged around the circumference of the massage sleeve 1.

[0105] The number of deformable parts 20 shall not be less than six.

[0106] The cross-section of the deformable part 20 may be, but is not limited to, rectangular, circular, elliptical or irregular.

[0107] When the first joint 22 is driven to move along the axis L1, it simultaneously acts on the same end of the plurality of deformable portions 20 surrounding the massage sleeve 1. Constrained by both ends (the constraint portion 21 and the first joint 22), these deformable portions 20 synchronously and uniformly deform towards or away from the central axis L1. This multi-point synchronous circumferential movement allows them to uniformly squeeze or release the central massage sleeve 1 from all directions, ensuring that the inner diameter of the massage sleeve 1 can undergo concentric and uniform contraction and expansion, rather than unilateral or asymmetrical deformation.

[0108] The circumferential arrangement of multiple deformable parts 20 allows the massage sleeve 1 to contract evenly during adjustment, applying a wrapping, evenly distributed pressure to the covered limbs. This avoids discomfort caused by single-point pressure, improving the comfort and effectiveness of the massage. The multiple strip-shaped deformable parts 20 together form a stable frame structure, significantly enhancing the rigidity of the entire deformable assembly 2. This prevents it from becoming unstable or twisting when subjected to the reaction force of the internal massage sleeve 1, ensuring long-term reliability.

[0109] According to some embodiments of this application, optionally, such as Figures 4-7 , Figures 9-11 As shown, the deformable part 20 includes a deformable segment 200; when the deformable part 20 deforms toward the massage sleeve 1 to reduce the inner diameter of the massage sleeve 1, the deformable segment 200 constitutes the main deformation area.

[0110] The fact that the deformation segment 200 is the main deformation area of ​​the deformation part 20 does not mean that other parts of the deformation part 20 are absolutely undeformed. Rather, it means that under the same internal force, the strain (deformation per unit length) of the deformation segment 200 is much greater than that of other parts. Its macroscopic manifestation is that bending, arching, and other movements mainly occur in this area.

[0111] When the user rotates the rotating sleeve 3, driving the first joint 22 to move and forcing the entire deformable part 20 to bend and deform towards the massage sleeve 1 to reduce its inner diameter, most of the bending and shape change will be concentrated on this preset deformable section 200. This deformable section 200 becomes the main deformation area of ​​the deformable part 20 when under force, while the other parts of the deformable part 20 maintain relatively greater rigidity, mainly playing the role of force transmission and support.

[0112] This application allows for precise control of the main points of pressure applied to the massage sleeve 1 by pre-setting the position of the deformable section 200. This enables the massage force to be applied more accurately to specific muscle groups or acupoints of the limbs, enhancing the massage effect. Concentrating deformation in the designed deformable section 200 avoids unpredictable stress concentration and fatigue damage in other areas of the deformable part 20. This is equivalent to setting a safe bending zone for the deformable part 20, ensuring its functionality while greatly improving the durability and reliability of the entire deformable assembly 2.

[0113] In practice, the deformable segments 200 of the multiple deformable parts 20 arranged around the perimeter can be designed at different heights, so that when the first joint 22 moves toward the constraint part 21, the deformable segments 200 at different heights can be activated to provide the first massage area with a pressing massage experience at different positions.

[0114] According to some embodiments of this application, optionally, the material hardness of the deformed segment 200 is less than the material hardness of other parts of the deformed portion 20.

[0115] When manufacturing the deformable part 20, the material hardness of the area of ​​the deformable part 20 that is preset as the deformable segment 200 can be deliberately set to be lower than the material hardness of other parts of the deformable part 20 by means of two-material injection molding, inlay process or local heat treatment.

[0116] When the first joint 22 moves and forces the deformable section 20 to deform as a whole, the material of the deformable section 200 is softer and more flexible, so it will preferentially undergo bending or torsional deformation under stress. In contrast, other parts of the deformable section 20, due to their higher material hardness and rigidity, will have very small deformation. In this way, the deformation of the entire deformable section 20 is naturally concentrated and guided to this softer deformable section 200, making it stably the main deformation area.

[0117] This application utilizes the inherent mechanical properties of the material to control the deformation location, ensuring that the deformation of each product occurs precisely within a predetermined area during each use, thus guaranteeing consistent product performance. The soft deformable section 200 can better absorb and disperse the stress generated during deformation, avoiding stress peaks at the connection between the rigid part and the deformable section 200, thereby improving the fatigue resistance of the deformable part 20 and extending its service life.

[0118] In practice, the deformation section 200 can be designed with a non-uniform hardness, but rather a gradient. For example, its hardness can be gradually reduced from the rigid part near the deformation section 20 towards the center. This design can make the deformation transition smoother and more natural, further optimize stress distribution, and make the inward convex shape more ergonomic.

[0119] According to some embodiments of this application, optionally, in the direction perpendicular to axis L1, the cross-sectional dimension of the deformable segment 200 is smaller than the cross-sectional dimension of other parts of the deformable portion 20.

[0120] The cross-sectional dimensions mentioned in this application may refer to the width, thickness, or section modulus of the deformable section 20, which comprehensively reflects its bending resistance. As long as one or a combination of these geometric parameters of the deformable section 200 is smaller than the others, the effect of weakening stiffness can be achieved.

[0121] When a component is subjected to bending stress, its stiffness is directly related to its cross-sectional dimensions (such as moment of inertia). The smaller the cross-sectional dimensions, the lower the stiffness, and the easier it is to deform. Therefore, when the first joint 22 moves and forces the deformable part 20 to be subjected to stress as a whole, the deformable segment 200 with the smaller cross-sectional dimensions will preferentially and mainly generate bending deformation at this location because its local stiffness is the lowest, thus stably becoming the main deformation area.

[0122] This application guides the deformation position through geometric dimension control. The method is reliable, has good repeatability, and ensures the consistency and predictability of product performance.

[0123] According to some embodiments of this application, optionally, such as Figures 13-14 As shown, it also includes an auxiliary member 6, which is sleeved on the outside of all deformable parts 20 and is used to push the corresponding deformable part 20 to protrude toward the massage sleeve 1; the deformable section 200 is the part on the deformable part 20 that corresponds to the auxiliary member 6.

[0124] In practical applications, when the deformable component 2 tends to deform as a whole due to the movement of the first joint 22, the auxiliary component 6 begins to function as an independent adjustment unit. The deformable segment 200 it covers is subjected to an inward force beforehand or additionally under the inward compression of the auxiliary component 6, thereby creating a more significant bulge in that local area. When the deformable part 20 deforms under the push of the first joint 22, the area that has already deformed is more likely to continue to deform than other areas, thus concentrating more of the deformation of the support segment 201 in the deformable segment 200 acted upon by the auxiliary component 6.

[0125] According to some embodiments of this application, optionally, such as Figure 15 As shown, the auxiliary component 6 has a second guide groove 60 adapted to the guide rail 42; the auxiliary component 6 is configured to move along the axis L1 to adjust its position on the deformable section 200 on the deformable part 20.

[0126] When users need to adjust the concentrated pressure points of the massage, they can directly operate the auxiliary component 6 to move it along the axis L1. Due to the cooperation between the guide rail 42 and the second guide groove 60, the movement of the auxiliary component 6 is restricted to a direction parallel to the axis L1, preventing deflection or jamming. By changing the axial position of the auxiliary component 6, the user adjusts its position on the deformable segment 200 of the deformable part 20, thereby achieving precise positioning and pressure on different muscle groups.

[0127] The guide rail 42 ensures the precision of the linear movement of the auxiliary component 6, allowing the user to accurately position the protrusion effect of the deformable segment 200 to a specific location on the limb, achieving precise and controllable massage height. The guide structure prevents the auxiliary component 6 from shaking or rotating during movement, ensuring the stability and smoothness of the adjustment process, and improving the product's quality and user experience.

[0128] In the specific implementation process, such as Figures 12-14 As shown, the surface of the cup body 4 is provided with an adjustment port 41 extending along the axis L1. The outer peripheral surface of the pusher is in contact with the inner wall of the cup body 4 and is provided with an adjustment knob 61. The adjustment knob 61 extends out of the cup body 4 through the adjustment port 41, allowing the user to drive the auxiliary component 6 to move along the axis L1 by pushing the adjustment knob 61, so as to adjust the position of the deformable section 200.

[0129] Furthermore, the inner wall of the adjustment port 41 fits against the adjustment knob 61, and the adjustment knob 61 is also provided with a spring piece 62 for pressing against the outer surface of the cup body 4. The spring piece 62 can restrict the auxiliary part 6 from moving along the cup body 4 by pressing against the cup body 4.

[0130] According to some embodiments of this application, optionally, such as Figures 15-16 As shown, the deformable part 20 is composed of multiple support segments 201 connected end to end by hinges.

[0131] When the first joint 22 moves along axis L1, it pulls the entire chain-like deformable part 20 to extend and retract. Simultaneously, the auxiliary member 6, fitted on the outer side, compresses one or more support segments 201 corresponding to its position. Since the support segments 201 are hinged, they can rotate relative to each other at the hinge points under the thrust of the auxiliary member 6, thus forming one or more sharp-angled, clearly oriented protrusions locally. This structure transforms the deformation of the deformable part 20 from a continuous, overall bending to a localized, discrete rotation, thereby more precisely pushing the massage sleeve 1 to produce the corresponding protrusions.

[0132] Each hinged support segment 201 can independently generate an independent protrusion under the action of the auxiliary component 6, so that the massage sleeve 1 can form a very localized pressure point, accurately stimulating acupoints or muscle pain points, and the massage effect is better; the chain structure is more flexible than the integral strip structure, and can better adapt to the peristalsis of the muscles and the subtle changes in shape of the limbs during the massage, providing dynamic fit and avoiding the discomfort of excessive pressure.

[0133] According to some embodiments of this application, optionally, such as Figure 16 As shown, a third limiting part 2010 is also provided at one end of the support section 201; the third limiting part is located on the side of the support section 201 close to the massage sleeve 1; when the support section 201 rotates around its hinge point with the adjacent support section 201 to the extreme position away from the massage sleeve 1, the third limiting part 2010 is used to prevent it from rotating further.

[0134] When the massage structure needs to relax from a tight massage state, the first joint 22 moves away from the restraint 21. At this time, each support segment 201, under the elastic restoring force of the massage sleeve 1 or its own gravity, tends to rotate outward (i.e., away from the direction of the massage sleeve 1) around its hinge point. When it rotates to a certain angle, the third limiting part 2010 on the current support segment 201 will contact and collide with the adjacent support segment 201, thereby preventing it from rotating further. This blocked position is defined as the limit position of the outward rotation of the support segment 201.

[0135] The third limiting part 2010 provides a unified physical reference position for all support segments 201 in the relaxed state. This ensures that after each massage, the massage sleeve 1 can quickly return to the preset maximum inner diameter, avoiding incomplete reset or jamming caused by the scattered rebound position of the support segments 201, and improving the reliability and consistency of the massage structure's movement. The third limiting part 2010 prevents the support segments 201 from rotating at excessive angles in the reverse direction, or even from excessive outward rotation in a reverse joint manner, thereby protecting the hinge from damage, maintaining the integrity and stability of the entire chain deformation part 20 structure, and extending its service life.

[0136] In practice, the contact surface of the third limiting part 2010 can be adhered with an elastic material (such as a silicone pad or polyurethane buffer block), or the part itself can be designed as an elastic arm structure. When the support section 201 rotates to its limit position, the elastic body deforms to absorb impact energy, significantly reducing collision noise.

[0137] According to some embodiments of this application, optionally, such as Figures 17-21As shown, the deformable part 20 includes a reset rope 202 and multiple support segments 201; the surface of the support segment 201 facing away from the constraint part 21 along the axis L1 is a guide surface 2011, which is used to contact the adjacent support segment 201; the interval between the guide surface 2011 and the constraint part 21 gradually decreases from the side of the guide surface 2011 facing away from the massage sleeve 1 to the side of the guide surface 2011 close to the massage sleeve 1; a third joint 2012 is also provided on the side of the support segment 201 facing away from the massage sleeve 1, which is used to engage with the end of the adjacent support segment 201 facing away from the constraint part 21; the reset rope 202 is connected between the first joint 22 and the constraint part 21, and passes through the third joint 2012 of all support segments 201; the third joint 2012 is fixedly connected to the reset rope 202; the first joint 22 moves linearly back and forth along the axis L1 to tension or relax the reset rope 202.

[0138] The reset rope 202 is not only the active component that pulls the support section 201 to reset, but also the constraint component that keeps all the support sections 201 connected in series and prevents them from falling apart during the entire movement.

[0139] When the first joint 22 is driven to move linearly towards the restraint 21, the reset rope 202 is initially in a relatively relaxed state. At this time, the first joint 22 pushes the first support segment 201, which then presses against the inclined guide surface 2011 of the adjacent support segment 201. Under the interaction of the inclined surfaces, the multiple support segments 201 move along the guide surface 2011 and overlap radially, like roof tiles, thereby jointly pushing the massage sleeve 1 from the outside to deform, reducing its inner diameter.

[0140] When the first joint 22 moves in the opposite direction away from the restraint 21, the reset rope 202 is tensioned. The tension of the rope acts on all support sections 201 through the third joint 2012, pulling the support sections 201 back to their original position, forcing them to slide in the opposite direction along the inclined guide surface 2011, releasing the radial overlap, and increasing the inner diameter of the massage sleeve 1.

[0141] This application achieves controllability and repeatability of radial movement of the support section 201 by using the relaxation overlap and tension reset mechanism of the reset rope 202 and multiple support sections 201, combined with the precise guidance of the inclined guide surface 2011, thus ensuring the uniformity and stability of the inner diameter change of the massage sleeve 1.

[0142] According to some embodiments of this application, optionally, such as Figures 17-21As shown, the support segment 201 is configured such that: when the first joint 22 moves toward the constraint portion 21, it is pushed by the first joint 22 to abut against the guide surface 2011 of the adjacent support segment 201, and moves along the guide surface 2011 until the third joint 2012 engages with the adjacent support segment 201 and overlaps with the adjacent support segment 201 in the radial direction of the massage sleeve 1; when the first joint 22 moves away from the constraint portion 21, it is pulled by the reset rope 202 to reset to a state where the surface perpendicular to the radial direction of the massage sleeve 1 is flush with the adjacent support segment 201; and multiple support segments 201 overlap in the radial direction of the massage sleeve 1 to push the massage sleeve 1 to deform.

[0143] The overlap mentioned in this application does not refer to complete coverage, but rather to the fact that, in radial projection, a portion of a support segment 201 and a portion of an adjacent support segment 201 are no longer aligned radially, but rather form a misalignment and overlap, which is a direct result of their inward contraction and convergence.

[0144] The main driving force during the contraction phase is the thrust of the first joint 22, which is converted into radial motion through the guide surface 2011; the main driving force during the reset phase is the tension of the reset rope 202, and the guide surface 2011 acts as a reset slide rail during this phase.

[0145] The movement of the support segment 201 is precisely guided, undergoing a process of pushing, contacting, sliding on the inclined plane, and overlapping, ensuring the synchronicity and consistency of the contraction of all support segments 201 and avoiding the risk of jamming or asynchrony during the movement.

[0146] According to some embodiments of this application, optionally, such as Figure 21 As shown, a protrusion 221 is also provided on the side of the first joint 22 near the deformable part 20; in the direction away from the first joint 22 along the axis L1, the first support section 201 is provided with a third guide groove 2013 for matching the protrusion 221. The third guide groove 2013 cooperates with the protrusion 221 to restrict the first support section 201 to have only the degree of freedom to move radially along the massage sleeve 1.

[0147] In actual operation: During the contraction phase, when the first joint 22 moves toward the constraint 21, the protrusion 221 pushes the groove wall of the third guide groove 2013. Due to the limited degree of freedom, this thrust is converted into the radial inward movement of the first support segment 201, thereby precisely initiating the inclined extrusion process with the guide surface 2011 of the adjacent support segment 201; During the reset phase, when the first joint 22 moves away from the constraint 21, the protrusion 221 slides in the third guide groove 2013, ensuring that the first support segment 201 is reset radially outward under the traction of the reset rope 202, without any deviation.

[0148] By limiting the movement of the first support segment 201 to radial motion, the contraction process is ensured to be a precise radial compression from the outset, rather than a complex movement that may have an axial component. This guarantees the purity, synchronicity, and predictability of the contraction action of the entire deformable assembly 2. The massage structure provided in this application avoids energy loss and action delay caused by possible axial movement or slight rotation of the first support segment 201, enabling every minute displacement of the first joint 22 to be efficiently and instantly converted into effective radial adjustment, thus improving the control accuracy and response speed of the system.

[0149] In specific implementation, the third guide groove 2013 can be a T-shaped groove, and the shape of the protrusion 221 is adapted to the shape of the third guide groove 2013, which physically restricts all other degrees of freedom except radial movement from a geometrical perspective.

[0150] Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A massage structure with a variable inner diameter, characterized in that, Also includes: A deformable component is fitted onto the outside of the first massage area; The deformable component includes a deformable part, a constrained part, and a first joint part. The constrained part and the first joint part are respectively located at both ends of the deformable part along the central axis L1 of the deformable component. The constrained part is used to restrict the movement of the deformable part. The rotating sleeve is provided with a second engagement portion; The first joint and the second joint are coupled and linked, converting the rotational motion of the rotating sleeve around the axis L1 into the linear reciprocating movement of the first joint along the axis L1; The first joint moves closer to or further away from the constraint portion along axis L1, causing at least a portion of the deformable portion to deform toward or away from the first massage area, thereby driving the inner diameter of the deformable component to shrink or increase.

2. The massage structure with a variable inner diameter according to claim 1, characterized in that, Also includes: The guide rail is set along the direction of axis L1; The first joint is provided with a first guide groove that mates with the guide rail; The cooperation between the guide rail and the first guide groove is used to constrain the movement direction of the first joint.

3. The massage structure with a variable inner diameter according to claim 2, characterized in that, The first joint and the second joint are threaded structures that mesh with each other; The first joint portion is anti-rotating relative to the rotating sleeve; When coupled and linked, the rotating sleeve rotates, driving the first joint to move linearly back and forth along the axis L1 through threaded transmission.

4. The massage structure with a variable inner diameter according to claim 2, characterized in that, The first joint is a column; The second joint is a waist-shaped groove; The column is movably disposed within the waist-shaped groove, and its outer peripheral surface is in contact with the inner wall of the waist-shaped groove; The length direction of the waist-shaped groove forms an angle α with the axis L1, and satisfies 90° > α > 0; When coupled, the rotating sleeve rotates and squeezes the column through the inner wall of the waist-shaped groove, driving the column to move along the length direction of the waist-shaped groove, thereby causing the first joint to move linearly back and forth along the axis L1.

5. A massage structure with a variable inner diameter according to claim 2, characterized in that, The rotating sleeve is also provided with a first limiting part; The first guide groove has a second limiting part at one end along the axis L1 away from the constraint part; The first joint has two extreme positions when it moves linearly back and forth along axis L1. At one extreme position, the first engagement portion is blocked by the first limiting portion; at the other extreme position, the second limiting portion is blocked by the guide rail.

6. A massage structure with a variable inner diameter according to claim 2, characterized in that, It also includes a flexible massage sleeve for covering the first massage area; Both the deformable component and the rotating sleeve are fitted onto the outside of the massage sleeve. The deformable component is used to provide support for the massage sleeve so that the inner diameter of the massage sleeve reaches a set size.

7. A massage structure with a variable inner diameter according to claim 6, characterized in that, The deformable part has a strip-shaped structure; The number of deformable parts is multiple, and all of the deformable parts are arranged circumferentially around the massage sleeve.

8. A massage structure with a variable inner diameter according to claim 7, characterized in that, The deformable part includes a deformable segment; When the deformable portion deforms toward the massage sleeve to reduce the inner diameter of the massage sleeve, the deformable segment constitutes the main deformation area.

9. A massage structure with a variable inner diameter according to claim 8, characterized in that, The material hardness of the deformed section is lower than that of the other parts of the deformed portion.

10. A massage structure with a variable inner diameter according to claim 8, characterized in that, In the direction perpendicular to axis L1, the cross-sectional dimension of the deformed segment is smaller than the cross-sectional dimension of the other parts of the deformed portion.

11. A massage structure with a variable inner diameter according to claim 8, characterized in that, Also includes: An auxiliary component, fitted onto the outside of all the deformable parts, is used to push the corresponding deformable part to protrude toward the massage sleeve; The deformable segment is the part on the deformable portion that corresponds to the auxiliary component.

12. A massage structure with a variable inner diameter according to claim 11, characterized in that, The auxiliary component is provided with a second guide groove that is adapted to the guide rail; The auxiliary component is configured to move along axis L1 to adjust its position on the deformed segment of the deformable part.

13. A massage structure with a variable inner diameter according to claim 11, characterized in that, The deformable part is composed of multiple support segments that are hinged together end to end.

14. A massage structure with a variable inner diameter according to claim 13, characterized in that, A third limiting part is also provided at one end of the support section; The third limiting part is located on the side of the support section near the massage sleeve; When the support segment rotates about its hinge point with the adjacent support segment to its extreme position away from the massage sleeve, the third limiting part is used to prevent it from rotating further.

15. A massage structure with a variable inner diameter according to claim 6, characterized in that, The deformable part includes a reset rope and multiple support sections; The surface of the support segment facing away from the constraint part along the axis L1 is a guide surface, which is used to contact the adjacent support segment; The distance between the guide surface and the constraint part gradually decreases from the side of the guide surface away from the first massage part to the side of the guide surface closer to the first massage part; The support section is also provided with a third joint on the side opposite to the first massage part, for engaging with the end of the adjacent support section opposite to the constraint part. The reset rope is connected between the first joint and the constraint part, and passes through the third joint of all the support segments; The third joint is fixedly connected to the reset rope; The first joint moves linearly back and forth along axis L1 to tension or relax the reset rope.

16. A massage structure with a variable inner diameter according to claim 15, characterized in that, The support segment is configured such that, as the first engagement portion moves toward the constraint portion, it is pushed by the first engagement portion to abut against the guide surface of the adjacent support segment, and moves along the guide surface until the third engagement portion engages with the adjacent support segment and overlaps itself with the adjacent support segment radially along the deformable assembly. When the first joint moves away from the constraint part, it is pulled by the reset rope to be reset to a state where the surface perpendicular to the radial direction of the deformable component is flush with the adjacent support section. Multiple support segments overlap radially along the deformable assembly to drive the massage sleeve to deform.

17. A massage structure with a variable inner diameter according to claim 15, characterized in that, A protrusion is also provided on the side of the first joint near the deformable part; In the direction along axis L1 away from the first joint, the first support segment is provided with a third guide groove for fitting with the protrusion; The third guide groove engages with the protrusion to restrict the first support segment to have only the degree of freedom to move radially along the deformable assembly.

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