Intelligent mammary gland rehabilitation training equipment with massage and physical therapy functions
By designing multi-dimensional exercise mechanisms and smart breast rehabilitation training equipment for hot compress physiotherapy, the problems of insufficient stimulation of existing equipment and discomfort in traditional massage are solved, and efficient postoperative breast rehabilitation is achieved, improving the patient's rehabilitation experience.
Patent Information
- Application Number
- CN202510712042.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-29
- Publication Date
- 2025-07-11
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing breast postoperative rehabilitation equipment has a single movement mode and cannot simulate artificial multi-dimensional massage, resulting in insufficient targeted stimulation, low patient compliance, and traditional artificial massage has physiological and psychological disorders.
An intelligent breast rehabilitation training equipment is designed, including a bra, positioning part, breast training mechanism and control box. The circular, centripetal and fixed-point rotation massage is achieved through a multi-dimensional movement mechanism. Combined with hot compress physiotherapy, it simulates artificial massage techniques and provides multi-dimensional stimulation.
It improves rehabilitation efficiency, enhances patient compliance, reduces pain and embarrassment, reduces medical costs, and provides a comfortable home rehabilitation plan.
Smart Images

Figure CN120284685A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of medical devices, and particularly relates to an intelligent breast rehabilitation training device with both massage and physiotherapy functions. Background Art
[0002] Postoperative rehabilitation of breast diseases (such as breast cancer) is an important part of clinical treatment. The repair of breast tissue, improvement of lymphatic return and functional recovery after surgery directly affect the quality of life of patients. At present, in postoperative breast rehabilitation treatment, massage and physiotherapy are common means to promote tissue repair, relieve pain and prevent adhesion. The core requirement is to improve local blood circulation, regulate tissue metabolism and reduce the risk of postoperative complications through mechanical stimulation and physical intervention.
[0003] The existing technologies have the following deficiencies: 1. There are patient experience and psychological barriers in manual massage: During manual massage, patients may experience physical discomfort or psychological embarrassment. Especially for operations on private parts, the compliance of some patients is relatively low, which affects the rehabilitation process.
[0004] 2. There is a single movement mode in breast rehabilitation devices: Most devices can only achieve massage in a single direction (such as linear reciprocation or simple vibration), and cannot simulate multi-dimensional techniques of manual massage (such as circular, centripetal, fixed-point rotation, etc.). The targeted stimulation of different areas of the breast is insufficient, and it is difficult to cover the full-cycle needs of postoperative rehabilitation. Summary of the Invention
[0005] In view of the deficiencies of the existing technologies, the present invention provides an intelligent breast rehabilitation training device with both massage and physiotherapy functions. The specific technical solutions are as follows: An intelligent breast rehabilitation training device with both massage and physiotherapy functions includes a bra, a positioning member, a breast training mechanism and a control box; The positioning member is arranged at the edge of the bra, and the positioning member is used to fix the bra outside the patient's breast. The breast training mechanism is installed inside the bra for breast massage and physiotherapy, and the control box is electrically connected to the breast training mechanism through a wire; The breast training mechanism includes a first movement mechanism that moves around the circumference of the breast, a second movement mechanism that moves from the edge of the breast to the center, a third movement mechanism that rotates around a certain fixed point, and a massage and physiotherapy mechanism that acts on the breast; Among them, the first movement mechanism is installed on the inner surface of the middle part of the bra. The second movement mechanism is installed at the output end of the first movement mechanism, and the output end of the first movement mechanism drives the second movement mechanism to move in a circle. The third movement mechanism is installed at the output end of the second movement mechanism, and the output end of the second movement mechanism drives the third movement mechanism to move centripetally. The massage and physiotherapy mechanism is installed at the output end of the third movement mechanism, and the third movement mechanism drives the massage and physiotherapy mechanism to rotate.
[0006] Preferably, the first motion mechanism is a first motor fixed on the inner surface of the middle part of the bra, and the output shaft of the first motor is fixed to the second motion mechanism.
[0007] Preferably, the second motion mechanism includes a support guide rail fixed to the output shaft of the first motor. A second motor is arranged above the support guide rail. Both ends of the output shaft of the second motor are fixed with gears. Tooth grooves are formed on the outer surface of the support guide rail, and the gears are meshed with the tooth grooves. A slider is fixed on the upper surface of the second motor. A guide rod is fixed on the upper surface of the support guide rail, and the hole formed on the surface of the slider is movably sleeved outside the guide rod. The third motion mechanism is installed on the lower surface of the second motor.
[0008] Preferably, the middle part of the guide rod is an arc rod, the support guide rail is an arc plate, and the center of the arc rod of the guide rod coincides with the center of the support guide rail.
[0009] Preferably, the third motion mechanism includes an electric push rod fixed to the lower surface of the second motor. The electric push rod passes through a through groove formed in the middle of the support guide rail. The telescopic end of the electric push rod is fixed with a third motor. The massage and physiotherapy mechanism is installed on the output shaft of the third motor. A pressure sensor for detecting pressure is installed at the telescopic end of the electric push rod.
[0010] Preferably, the massage and physiotherapy mechanism includes a turntable fixed to the output shaft of the third motor. A cover plate is fixed to the lower surface of the turntable by screws. An activity groove is formed on the lower surface of the turntable. A first spring is installed in the activity groove. A liquid storage tube is movably installed in the activity groove through the first spring, and the liquid storage tube passes through a hole formed on the surface of the cover plate. A end cap is screwed at the lower end of the liquid storage tube. A coating rolling bead is arranged in the end cap. A storage cavity for erythromycin emulsion is formed in the liquid storage tube through the end cap and the coating rolling bead. A support ring is arranged on the surface of the coating rolling bead located inside the liquid storage tube. A second spring fixed to the support ring is installed in the liquid storage tube. A temperature control electric heating plate is fixed in the middle of the activity groove. A temperature sensing sensor for measuring temperature is installed on the surface of the temperature control electric heating plate.
[0011] Preferably, the first motor, the second motor, the electric push rod, the third motor, the temperature control electric heating plate, the temperature sensing sensor and the pressure sensor are all electrically connected to the control box.
[0012] Preferably, five activity grooves are formed on the lower surface of the turntable in a circular array.
[0013] Preferably, the positioning member includes a magic tape strap and an arc-shaped strip sewn on the magic tape strap. The magic tape hook and pile on the inner side of the arc-shaped strip cooperate with the magic tape hook and thorn on the edge of the bra. A latex pad is adhered to the lower end of the bra.
[0014] Preferably, ventilation windows for ventilation are provided on the bra, and protective covers for protecting the ventilation windows are arranged on the outer side of the bra. A plastic hand-twist screw is installed in a hole opened at the upper end of the protective cover, and the end of the plastic hand-twist screw is screwed into a threaded hole opened at the upper end of the bra.
[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Wear convenience and fixing reliability: By arranging positioning members at the edge of the bra, accurate fixation of the device to the outside of the patient's breast can be achieved, avoiding the problem that traditional massage devices are prone to displacement, and providing a basic guarantee for subsequent massage physiotherapy.
[0016] 2. Synergistic breakthrough of multi-dimensional massage physiotherapy functions: Circular motion massage (the first motion mechanism), the first motion mechanism installed on the inner side of the middle of the bra can drive the massage physiotherapy mechanism to move along the circumference of the breast, realizing circular massage and physiotherapy. This motion mode can simulate the artificial circular massage technique, act on the peripheral tissues of the breast, promote blood circulation, and relieve local swelling and muscle tension after surgery; Centripetal motion massage (the second motion mechanism), the second motion mechanism moves from the edge of the breast to the center, cooperating with the circular trajectory of the first motion mechanism to form a "circular + centripetal" composite massage path. This design can specifically stimulate the central area and edge tissues of the breast progressively, helping to improve tissue adhesion after breast surgery and promoting lymphatic return; Fixed-point self-rotation massage (the third motion mechanism), the third motion mechanism drives the massage physiotherapy mechanism to rotate around a fixed point, realizing local fixed-point massage and physiotherapy. By massaging, local tissue metabolism is enhanced, and combined with the hot compress physiotherapy function, the rehabilitation efficiency is improved.
[0017] 3. Technical advantages of intelligent physiotherapy and precise rehabilitation: Multi-mode integrated physiotherapy, the massage physiotherapy mechanism can combine physical therapy and work in coordination with the three major motion mechanisms to achieve the dual effects of "mechanical massage + physical physiotherapy".
[0018] 4. Optimization of the patient experience in clinical applications: Comfort of replacing manual massage, solving the problems of patient pain and embarrassment caused by traditional postoperative manual massage; The device supports patients to use at home, reducing the frequency of going to the hospital back and forth and reducing medical costs.
[0019] 5. Technical foresight and industrial application value: Synergistic innovation of multiple motion mechanisms, through the hierarchical transmission design of the first, second, and third motion mechanisms, a three-dimensional motion system of "circumference - centripetal - self-rotation" is constructed, breaking through the limitations of the single motion mode of traditional breast massage devices and providing new ideas for the structural design of rehabilitation devices. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 is a three-dimensional structural schematic diagram of the present invention; Figure 2Schematic diagram of the partial cross-sectional structure of the present invention; Figure 3 Schematic diagram of the part structure of the present invention; Figure 4 is Figure 2 The enlarged structure diagram of part A in Figure 5 is Figure 4 The enlarged structure diagram of part B in
[0021] Reference numerals: 1, bra; 2, ventilation window; 3, protective cover; 4, plastic hand-twist screw; 5, breast training mechanism; 51, first motor; 52, support guide rail; 53, second motor; 54, gear; 55, tooth groove; 56, slider; 57, guide rod; 58, electric push rod; 59, third motor; 60, turntable; 61, cover plate; 62, activity groove; 63, liquid storage tube; 64, first spring; 65, end cap; 66, application ball; 67, support ring; 68, second spring; 69, temperature control electric heating plate; 70, temperature sensor; 6, latex pad; 7, magic tape; 8, arc strip; 9, control box. Detailed implementation manners
[0022] The technical solution of the present invention will be described below with reference to the drawings and embodiments.
[0023] Please refer to Figures 1-5 , this embodiment provides the following technical solution: an intelligent breast rehabilitation training device with both massage and physiotherapy functions, including a bra 1, a positioning member, a breast training mechanism 5 and a control box 9; The positioning member is arranged at the edge of the bra 1, and the positioning member is used to fix the bra 1 outside the patient's breast. The breast training mechanism 5 is installed inside the bra 1 for breast massage and physiotherapy, and the control box 9 is electrically connected to the breast training mechanism 5 through a wire; The breast training mechanism 5 includes a first motion mechanism that moves circumferentially around the breast, a second motion mechanism that moves from the edge of the breast to the center, a third motion mechanism that rotates around a certain fixed point, and a massage and physiotherapy mechanism that acts on the breast; Among them, the first motion mechanism is installed on the inner surface of the middle part of the bra 1, the second motion mechanism is installed at the output end of the first motion mechanism, and the output end of the first motion mechanism drives the second motion mechanism to move circumferentially. The third motion mechanism is installed at the output end of the second motion mechanism, and the output end of the second motion mechanism drives the third motion mechanism to move centripetally. The massage and physiotherapy mechanism is installed at the output end of the third motion mechanism, and the third motion mechanism drives the massage and physiotherapy mechanism to rotate.
[0024] In this embodiment, a breast rehabilitation training device composed of a bra 1, a positioning member, a breast training mechanism 5, and a control box 9 is used. The positioning member is for wearing the bra 1 to fix the bra 1 on the outside of the breast. The breast training mechanism 5 is installed inside the bra 1 for breast massage and physiotherapy, thus facilitating breast postoperative rehabilitation training and solving the discomfort of patients caused by manual massage after breast surgery. The breast training mechanism 5 includes a first motion mechanism that moves circumferentially around the breast, a second motion mechanism that moves from the breast edge to the center, a third motion mechanism that rotates around a fixed point, and a massage and physiotherapy mechanism acting on the breast. The breast training mechanism 5 realizes circular motion of driving the massage and physiotherapy mechanism through the first motion mechanism to achieve circular massage and physiotherapy of the breast, realizes centripetal motion of driving the massage and physiotherapy mechanism through the second motion mechanism to achieve centripetal massage and physiotherapy of the breast, and realizes rotation of driving the massage and physiotherapy mechanism through the third motion mechanism to achieve fixed-point massage and physiotherapy of the breast.
[0025] Specifically, the first motion mechanism is a first motor 51 fixed on the inner surface of the middle part of the bra 1, and the output shaft of the first motor 51 is fixed to the second motion mechanism.
[0026] In this embodiment, through the first motion mechanism composed of the first motor 51, it is convenient for the first motor 51 to drive the second motion mechanism to perform circular motion.
[0027] Specifically, the second motion mechanism includes a support guide rail 52 fixed to the output shaft of the first motor 51. A second motor 53 is arranged above the support guide rail 52. Both ends of the output shaft of the second motor 53 are fixed with gears 54. Tooth grooves 55 are formed on the outer surface of the support guide rail 52, and the gears 54 are engaged with the tooth grooves 55. A slider 56 is fixed on the upper surface of the second motor 53. A guide rod 57 is fixed on the upper surface of the support guide rail 52, and the hole formed on the surface of the slider 56 is movably sleeved outside the guide rod 57. The third motion mechanism is installed on the lower surface of the second motor 53. The middle part of the guide rod 57 is an arc-shaped rod, the support guide rail 52 is an arc-shaped plate, and the center of the arc-shaped rod of the guide rod 57 coincides with the center of the support guide rail 52.
[0028] In this embodiment, a second motion mechanism composed of a support guide rail 52, a second motor 53, a gear 54, a tooth groove 55, a slider 56, and a guide rod 57 is provided. The support guide rail 52 is fixed to the output shaft of the first motor 51. Gears 54 fixed to both ends of the output shaft of the second motor 53 provided outside the support guide rail 52 are engaged with the tooth groove 55 provided on the outer surface of the support guide rail 52. Meanwhile, a hole is formed on the surface of the slider 56 fixed to the upper surface of the second motor 53, and the slider 56 is movably disposed outside the guide rod 57. At the same time, the guide rod 57 is fixed to the surface of the support guide rail 52. After the second motor 53 is powered on, the gear 54 fixed to the output shaft of the second motor 53 and the tooth groove 55 cooperate to move on the upper surface of the support guide rail 52. When the second motor 53 moves, the slider 56 slides on the surface of the guide rod 57, so that the second motor 53 drives the third motion mechanism to move. Both the support guide rail 52 and the guide rod 57 are arc-shaped structures with the same center of circle, which facilitates the second motor 53 to move along the arc of the support guide rail 52.
[0029] Specifically, the third motion mechanism includes an electric push rod 58 fixed to the lower surface of the second motor 53. The electric push rod 58 passes through a through groove formed in the middle of the support guide rail 52. A third motor 59 is fixed to the telescopic end of the electric push rod 58. A massage and physiotherapy mechanism is installed on the output shaft of the third motor 59. A pressure sensor for detecting pressure is installed at the telescopic end of the electric push rod 58.
[0030] In this embodiment, a third motion mechanism composed of an electric push rod 58 and a third motor 59 is provided. The electric push rod 58 is fixed to the lower surface of the second motor 53, and the third motor 59 is fixed to the telescopic end of the electric push rod 58. Therefore, when the electric push rod 58 expands and contracts, it drives the third motor 59 to move up and down, so that the massage and physiotherapy mechanism fixed to the output shaft of the third motor 59 contacts the breast. The pressure sensor installed at the telescopic end of the electric push rod 58 is used to detect the pressure when the massage and physiotherapy mechanism contacts the breast.
[0031] Specifically, the massage and physiotherapy mechanism includes a turntable 60 fixed to the output shaft of a third motor 59. A cover plate 61 is fixed to the lower surface of the turntable 60 by screws. An activity groove 62 is formed on the lower surface of the turntable 60. A first spring 64 is installed in the activity groove 62. A liquid storage tube 63 is movably installed in the activity groove 62 through the first spring 64. The liquid storage tube 63 passes through a hole formed on the surface of the cover plate 61. A end cap 65 is screwed and installed at the lower end of the liquid storage tube 63. An application rolling bead 66 is arranged in the end cap 65. A storage cavity for erythromycin emulsion is formed in the liquid storage tube 63 through the end cap 65 and the application rolling bead 66. A support ring 67 is arranged on the surface of the application rolling bead 66 located inside the liquid storage tube 63. A second spring 68 fixed to the support ring 67 is installed in the liquid storage tube 63. A temperature control electric heating plate 69 is fixed in the middle of the activity groove 62. A temperature sensor 70 for temperature measurement is installed on the surface of the temperature control electric heating plate 69. The first motor 51, the second motor 53, the electric push rod 58, the third motor 59, the temperature control electric heating plate 69, the temperature sensor 70, and the pressure sensor are all electrically connected to the control box 9.
[0032] In this embodiment, through the massage and physiotherapy mechanism composed of the turntable 60, the cover plate 61, the activity groove 62, the liquid storage tube 63, the first spring 64, the end cap 65, the application rolling bead 66, the support ring 67, the second spring 68, the temperature control electric heating plate 69, and the temperature sensor 70, the liquid storage tube 63 is movably installed in the activity groove 62 on the lower surface of the turntable 60 through the first spring 64. At the same time, the liquid storage tube 63 is installed in the hole formed on the surface of the activity groove 62, which is convenient for limiting the liquid storage tube 63 after the activity groove 62 is fixed to the lower surface of the cover plate 61 by screws. An application rolling bead 66 is installed in the end cap 65 screwed to the lower part of the liquid storage tube 63. At the same time, a support ring 67 is fixed to the end of the second spring 68 installed in the liquid storage tube 63, which is convenient for the application rolling bead 66 to closely adhere to the end cap 65 under the action of the support ring 67 and the second spring 68, so that a liquid storage cavity for storing erythromycin emulsion is formed in the liquid storage tube 63 through the end cap 65 and the application rolling bead 66. When the application rolling bead 66 moves on the breast surface, the erythromycin emulsion stored in the liquid storage tube 63 can be applied to the breast surface. The temperature control electric heating plate 69 installed in the middle of the activity groove 62 and the temperature sensor 70 installed on the surface of the temperature control electric heating plate 69 are convenient for the temperature control electric heating plate 69 to perform heat therapy on the breast after being electrically connected to the control box 9.
[0033] Specifically, there are five activity grooves 62 formed on the lower surface of the turntable 60 in a circular array.
[0034] Specifically, the positioning member includes a magic tape strap 7 and an arc-shaped strip 8 sewn on the magic tape strap 7. The magic tape hook and pile on the inner side of the arc-shaped strip 8 cooperate with the magic tape hook and thorn on the edge of the bra 1. A latex pad 6 is adhered to the lower end of the bra 1.
[0035] Specifically, a ventilation window 2 for ventilation is provided on the bra 1, and a protective cover 3 for protecting the ventilation window 2 is arranged on the outer side of the bra 1. A plastic hand-tightening screw 4 is installed in a hole opened at the upper end of the protective cover 3, and the end of the plastic hand-tightening screw 4 is screwed into a threaded hole opened at the upper end of the bra 1.
[0036] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. An intelligent breast rehabilitation training device with both massage and physiotherapy functions, characterized in that: It includes a bra (1), a positioning member, a breast training mechanism (5) and a control box (9); The positioning member is arranged at the edge of the bra (1), and the positioning member is used to fix the bra (1) outside the patient's breast. The breast training mechanism (5) is installed inside the bra (1) for breast massage and physiotherapy. The control box (9) is electrically connected to the breast training mechanism (5) through a wire; The breast training mechanism (5) includes a first motion mechanism that moves circumferentially around the breast, a second motion mechanism that moves from the breast edge to the center, a third motion mechanism that rotates around a certain fixed point, and a massage and physiotherapy mechanism that acts on the breast; Among them, the first motion mechanism is installed on the inner surface of the middle part of the bra (1). The second motion mechanism is installed at the output end of the first motion mechanism, and the output end of the first motion mechanism drives the second motion mechanism to move circumferentially. The third motion mechanism is installed at the output end of the second motion mechanism, and the output end of the second motion mechanism drives the third motion mechanism to move centripetally. The massage and physiotherapy mechanism is installed at the output end of the third motion mechanism, and the third motion mechanism drives the massage and physiotherapy mechanism to rotate.
2. The intelligent breast rehabilitation training device with both massage and physiotherapy functions according to claim 1, characterized in that: The first motion mechanism is a first motor (51) fixed on the inner surface of the middle part of the bra (1), and the output shaft of the first motor (51) is fixed to the second motion mechanism.
3. The intelligent breast rehabilitation training device with both massage and physiotherapy functions according to claim 2, characterized in that: The second motion mechanism includes a support guide rail (52) fixed to the output shaft of the first motor (51). A second motor (53) is arranged above the support guide rail (52). Gears (54) are fixed to both ends of the output shaft of the second motor (53). Tooth grooves (55) are formed on the outer surface of the support guide rail (52), and the gears (54) are engaged with the tooth grooves (55). A slider (56) is fixed to the upper surface of the second motor (53). A guide rod (57) is fixed to the upper surface of the support guide rail (52), and the hole formed on the surface of the slider (56) is movably sleeved outside the guide rod (57). The third motion mechanism is installed on the lower surface of the second motor (53).
4. The intelligent breast rehabilitation training device with both massage and physiotherapy functions according to claim 3, characterized in that: The middle part of the guide rod (57) is an arc-shaped rod, the support guide rail (52) is an arc-shaped plate, and the center of the arc-shaped rod of the guide rod (57) coincides with the center of the support guide rail (52).
5. The intelligent breast rehabilitation training device with both massage and physiotherapy functions according to claim 4, characterized in that: The third motion mechanism includes an electric push rod (58) fixed to the lower surface of the second motor (53). The electric push rod (58) passes through a through groove formed in the middle of the support guide rail (52). A third motor (59) is fixed to the telescopic end of the electric push rod (58). The massage and physiotherapy mechanism is installed on the output shaft of the third motor (59). A pressure sensor for detecting pressure is installed at the telescopic end of the electric push rod (58).
6. The intelligent breast rehabilitation training device with both massage and physiotherapy functions according to claim 5, characterized in that: The massage and physiotherapy institution includes a turntable (60) fixed to the output shaft of a third motor (59). A cover plate (61) is fixed to the lower surface of the turntable (60) by screws. An activity groove (62) is formed on the lower surface of the turntable (60). A first spring (64) is installed in the activity groove (62). A liquid storage tube (63) is movably installed in the activity groove (62) through the first spring (64), and the liquid storage tube (63) passes through a hole formed on the surface of the cover plate (61). A end cap (65) is screwed and installed at the lower end of the liquid storage tube (63). A smearing bead (66) is arranged in the end cap (65). A storage cavity for erythromycin emulsion is formed in the liquid storage tube (63) through the end cap (65) and the smearing bead (66). A support ring (67) is arranged on the surface of the smearing bead (66) located inside the liquid storage tube (63). A second spring (68) fixed to the support ring (67) is installed in the liquid storage tube (63). A temperature control electric hot plate (69) is fixed in the middle of the activity groove (62). A temperature sensor (70) for temperature measurement is installed on the surface of the temperature control electric hot plate (69).
7. The intelligent breast rehabilitation training device with both massage and physiotherapy functions according to claim 6, characterized in that: The first motor (51), the second motor (53), the electric push rod (58), the third motor (59), the temperature control electric hot plate (69), the temperature sensor (70), and the pressure sensor are all electrically connected to the control box (9).
8. The intelligent breast rehabilitation training device with both massage and physiotherapy functions according to claim 7, characterized in that: There are five activity grooves (62) arranged in a circular array on the lower surface of the turntable (60).
9. The intelligent breast rehabilitation training device with both massage and physiotherapy functions according to claim 1, characterized in that: The positioning member includes a magic tape strap (7) and an arc-shaped strip (8) sewn on the magic tape strap (7). The magic tape hook and fluff on the inner side of the arc-shaped strip (8) cooperate with the magic tape hook thorns on the edge of the bra (1). A latex pad (6) is adhered to the lower end of the bra (1).
10. The intelligent breast rehabilitation training device with both massage and physiotherapy functions according to claim 1, characterized in that: An air permeable window (2) is formed on the bra (1). A protective cover (3) for protecting the air permeable window (2) is arranged on the outer side of the bra (1). A plastic hand-twist screw (4) is installed in a hole formed at the upper end of the protective cover (3), and the end of the plastic hand-twist screw (4) is screwed into a screw hole formed at the upper end of the bra (1).