Health care device with regular oscillation and extrusion functions
By introducing the reciprocating motion of the rotating top plate into the health care device, the problem of the inability to effectively massage the inside of the human body in existing technologies is solved, and the compression and adjustment of spinal misalignment and acupoints are achieved, thereby improving the health care effect.
Patent Information
- Application Number
- CN202511213498.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-28
- Publication Date
- 2025-11-21
AI Technical Summary
Existing health care devices cannot effectively massage the deep layers of the human body, especially for spinal misalignment and acupoint oscillation and compression, and cannot achieve the correction of spinal misalignment and the orderly oscillation of qi and blood in blood vessels.
This health care device employs a regular oscillating and squeezing function. By installing a rotating top plate and a lower rotating top plate on a basic working platform, a drive device is used to make them rotate up and down repeatedly, squeezing the misaligned spine and acupoints on the back of the human body. Combined with the overall platform structure such as a sofa, bed board, or chair, it achieves the repositioning of the spine and the oscillating squeezing of acupoints.
It effectively prevents spinal misalignment and deformation, regulates the balance of Qi and blood, enhances vascular tension, improves immunity, and improves sleep quality. It also has the effects of promoting blood circulation and removing blood stasis, dispelling heat and cold, relieving inflammation and pain, promoting bowel movements and urination, and detoxifying and improving intelligence.
Smart Images
Figure CN120983239A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of health massage, and more particularly to a health device with a regular oscillating compression function. Background Technology
[0002] Exogenous health care devices can rhythmically vibrate the body's Qi and blood for extended periods, enhancing the internal strength of Qi and blood within blood vessels. This continuously promotes a diffusion state, increases vascular tension, increases the heart and lung capacity, strengthens kidney Qi, and alters the generating and controlling processes of the five internal organs. It is believed to have effects such as promoting blood circulation, removing blood stasis, dispelling heat and cold, clearing inflammation and relieving pain, promoting urination and detoxification, improving intelligence, and regulating the five internal organs. However, currently, there are no health care devices with this function. The market currently only offers health care equipment that uses slight vibration and sieving massage. The vibrating structure only vibrates a small part of the body's surface, and the sieving structure only slides left and right on the lower body. These structures cannot generate sufficient force to massage the deep layers of the body, failing to provide the necessary vibration and compression to acupoints and blood vessels, or to correct spinal misalignments. Summary of the Invention
[0003] This invention provides a health care device with regular oscillation and compression function. It can compress and reposition a misaligned spine on the back of the human body by rotating an upper rotating plate and a lower rotating plate installed on an everyday item. It can also regulate the balance of Qi and blood in the human body by oscillating and compressing other acupoints.
[0004] The present invention adopts the following technical solution: a health care device with regular oscillation and compression function, comprising a basic working platform, with upper and lower holes correspondingly provided on the upper and lower parts of the platform body, and upper and lower rotating top plates respectively installed in the upper and lower holes. One side of the upper rotating top plate is rotatably connected to the edge of the upper hole, and one side of the lower rotating top plate is rotatably connected to the edge of the lower hole. A pad is covered on the surface of the platform body, and the upper and lower rotating top plates are located at the lower part of the pad. A drive device assembly is provided at the bottom of the basic working platform. The output end of the drive device assembly is connected to the upper and lower rotating top plates through a linkage device to form a reciprocating rotational connection structure. The drive device drives the upper and lower rotating top plates to reciprocate up and down through the linkage device assembly. After the upper and lower rotating top plates rotate, they push the pad upwards and compress the human body parts to form a health care effect.
[0005] Furthermore, the basic working platform is set as an overall platform structure, which can be set as a sofa, bed board, chair or Simmons mattress.
[0006] Furthermore, the basic working platform is configured as a platform structure formed by connecting two or more platforms.
[0007] Furthermore, the drive assembly includes an upper drive motor and a lower drive motor, as well as corresponding upper and lower reducers. The control switch I of the upper drive motor and the control switch II of the lower drive motor are both connected to the main controller. The output end of the upper drive motor is driven by the upper reducer, and the output end of the lower drive motor is driven by the lower reducer. The linkage assembly includes an upper linkage device and a lower linkage device. The upper drive motor is connected to the upper rotating top plate through the corresponding upper reducer and the upper linkage device to form a reciprocating rotational connection. The lower drive motor is connected to the lower rotating top plate through the corresponding lower reducer and the lower linkage device to form a reciprocating rotational connection.
[0008] Furthermore, the upper linkage device includes an upper eccentric wheel and an upper connecting rod. One end of the upper connecting rod is connected to the upper eccentric wheel, and the other end is connected to the upper rotating top plate. The power output end of the upper drive motor is connected to the input end of the upper reducer. The output end of the upper reducer is connected to the upper rotating top plate through the upper eccentric wheel and the upper connecting rod. After the upper drive motor drives the upper eccentric wheel to rotate, it drives the upper rotating top plate to rotate up and down through the upper connecting rod. The lower linkage device includes a lower eccentric wheel and a lower connecting rod. One end of the lower connecting rod is connected to the lower eccentric wheel, and the other end is connected to the lower rotating top plate. The power output end of the lower drive motor is connected to the input end of the lower reducer. The output end of the lower reducer is connected to the lower rotating top plate through the lower eccentric wheel and the lower connecting rod. After the lower drive motor drives the lower eccentric wheel to rotate, it drives the lower rotating top plate to rotate up and down through the lower connecting rod.
[0009] Furthermore, the upper linkage device is configured as an upper linkage mechanism and an upper pin. The power output end of the upper drive motor is connected to the input end of the upper reducer. The output end of the upper reducer is connected to one end of the upper linkage mechanism through the upper pin. The other end of the upper linkage mechanism is connected to the upper rotating top plate. After the upper drive motor drives the upper linkage mechanism to move, it causes the upper rotating top plate to rotate up and down. The lower linkage device is configured as a lower linkage mechanism and a lower pin. The power output end of the lower drive motor is connected to the input end of the lower reducer. The output end of the lower reducer is connected to one end of the lower linkage mechanism through the lower pin. The other end of the lower linkage mechanism is connected to the lower rotating top plate. After the lower drive motor drives the lower linkage mechanism to move, it causes the lower rotating top plate to rotate up and down.
[0010] Furthermore, both the upper and lower drive motors are configured as 24V DC motors, and are fitted with sound-absorbing sleeves. Overheat protection devices are also connected to both the upper and lower drive motors.
[0011] Furthermore, the main controller is connected to control switch I and control switch II via a time switch, and the main controller is connected to a remote controller, which is wirelessly connected to the main controller.
[0012] Furthermore, the upper rotating top plate is connected to the edge of the upper hole by a hinge, and the lower rotating top plate is connected to the edge of the lower hole by a hinge.
[0013] This invention offers the following advantages: By adopting the above technical solution, this invention improves existing commonly used platforms, such as sofas, chairs, bed boards, and Simmons mattresses, by adding upper and lower rotating top plates. When a person lies on these platforms to rest, the uniform movement of the upper and lower rotating top plates easily compresses and realigns a misaligned spine, effectively preventing spinal misalignment and deformation. It also compresses acupoints and blood vessels in the back, promoting the flow of Qi and blood and regulating the body's Qi and blood balance. This invention can be installed on sofas, bed boards, and even chairs, expanding its application to various settings including workplaces, hospitals, homes, rehabilitation centers, health facilities, and drug rehabilitation centers. It is suitable for a wide range of people, is convenient to use, and has low modification and manufacturing costs, requiring no complex alterations. The invention uses a DC motor, ensuring that the force exerted by the upper and lower rotating top plates during movement does not cause significant harm to the human body, improving safety, and also greatly reducing noise levels. This invention can improve immunity, enhance appetite, and improve sleep quality in users. It can stimulate acupoints such as Yintang, Renzhong, Chengjiang, Lianquan, Tanzhong, Qihai, and Linmu, producing perceptible sensations like ants crawling, throbbing, connecting sensations, and electric shocks. This invention can alleviate the formation of abscesses and reduce fever in severe cases, achieving effects such as promoting blood circulation, dispelling heat and cold, clearing inflammation and relieving pain, promoting urination and detoxification, and improving cognitive function. This invention can induce oscillating movements in the spine, thereby effectively correcting spinal misalignments. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention.
[0016] Figure 2This is a schematic diagram of the structure of Embodiment 2 of the present invention. Detailed Implementation
[0017] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more explicit definition of the scope of protection of the present invention.
[0018] Example 1: This invention provides a health care device with a regular oscillating and squeezing function. It includes a basic working platform 1. An upper hole 3 and a lower hole 4 are correspondingly provided on the upper and lower parts of the platform body 2 of the basic working platform 1. An upper rotating top plate 5 and a lower rotating top plate 6 are respectively installed in the upper hole 3 and lower hole 4. In this embodiment, the upper rotating top plate and the lower rotating top plate correspond to the upper and lower parts of the spine on the back of the human body, respectively. Alternatively, the upper rotating top plate corresponds to the Xinshu (BL15) and Tanzhong (CV17) acupoints on the back of the human body, and the lower rotating top plate corresponds to the Huanzhong and Huantiao (GB30) acupoints on the back of the human body, depending on human comfort. One side of the upper rotating top plate 5 is aligned with the edge of the upper hole 3. For rotatable connection, one side of the lower rotating top plate 6 is rotatably connected to the edge of the lower hole 4. A pad 7 covers the surface of the platform body 2. The upper rotating top plate 5 and the lower rotating top plate 6 are located under the pad 7. A drive device assembly is provided at the bottom of the basic working platform 1. The output end of the drive device assembly forms a reciprocating rotatable connection structure with the upper rotating top plate 5 and the lower rotating top plate 6 through a linkage device. The drive device drives the upper rotating top plate 5 and the lower rotating top plate 6 to rotate reciprocally up and down through the linkage device assembly. After the upper rotating top plate 5 and the lower rotating top plate 6 rotate, they push against the human body parts by driving the pad 7. Afterwards, it forms a health-care effect. The basic working platform 1 is set as an integral platform structure. The integral platform structure can be set as a sofa, bed board, chair or Simmons mattress. The basic working platform 1 can also be set as a platform structure formed by two or more platforms connected together. The integral platform structure used in this embodiment is a bed board. The drive device assembly of this embodiment includes an upper drive motor 8 and a lower drive motor 9, as well as corresponding upper reducers 10 and lower reducers 11. The control switch I 21 of the upper drive motor 8 and the control switch II 22 of the lower drive motor 9 are both connected to the main controller 12. The upper drive motor 8 The output end is connected to the upper reducer 10 for driving, and the output end of the lower drive motor 9 is connected to the lower reducer 11 for driving. The linkage assembly includes an upper linkage device and a lower linkage device. The upper drive motor 8 is connected to the upper rotating top plate 5 through the corresponding upper reducer 10 and the upper linkage device to form a reciprocating rotational connection. The lower drive motor 9 is connected to the lower rotating top plate 6 through the corresponding lower reducer 11 and the lower linkage device to form a reciprocating rotational connection. In this embodiment, the reduction ratio between the upper drive motor 8 and the upper reducer is 1:14-1:15, which is about 100 revolutions per minute, which is in line with the human body's movement frequency.The upper linkage device in this embodiment includes an upper eccentric wheel 12 and an upper connecting rod 13. One end of the upper connecting rod 13 is connected to the upper eccentric wheel 12, and the other end is connected to the upper rotating top plate 5. The power output end of the upper drive motor 8 is connected to the input end of the upper reducer 10. The output end of the upper reducer 10 is connected to the upper rotating top plate 5 through the upper eccentric wheel 12 and the upper connecting rod 13. After the upper drive motor 8 drives the upper eccentric wheel 12 to rotate, it drives the upper rotating top plate 5 to rotate up and down through the upper connecting rod 13. The lower linkage device includes a lower eccentric wheel 14 and a lower connecting rod 15. One end of the lower connecting rod 15 is connected to the lower eccentric wheel 14, and the other end is connected to the lower rotating top plate 6. The power output end of the lower drive motor 9 is connected to the input end of the lower reducer 11. The output end of the lower reducer 11 is connected to the lower rotating top plate 6 through the lower eccentric wheel 14 and the lower connecting rod 15. After the lower eccentric wheel 14 is rotated by the motor 9, the lower rotating top plate 6 is driven to rotate up and down through the lower connecting rod 15. In this embodiment, both the upper drive motor 8 and the lower drive motor 9 are set as 24V DC motors. The upper drive motor 8 and the lower drive motor 9 are covered with a sound-absorbing sleeve. Overheat protection devices are connected to the upper drive motor 8 and the lower drive motor 9. In this embodiment, the overheat protection devices are bimetallic strip thermal protectors, electronic protection devices and thermal magnetic circuit breakers. The main controller 12 is connected to the control switch I 21 and the control switch II 22 by a time switch 20. The main controller 12 is connected to a remote controller. The remote controller and the main controller are connected by wireless remote control. In this embodiment, one side of the upper rotating top plate 5 is connected to the edge of the upper hole 3 by a hinge, and one side of the lower rotating top plate 6 is connected to the edge of the lower hole 3 by a hinge.
[0019] exist Figure 2In Embodiment 2, this invention provides a health care device with a regular oscillating and squeezing function. It includes a basic working platform 1. An upper hole 3 and a lower hole 4 are correspondingly provided on the upper and lower parts of the platform body 2 of the basic working platform 1. An upper rotating top plate 5 and a lower rotating top plate 6 are respectively installed in the upper hole 3 and lower hole 4. In this embodiment, the upper rotating top plate and the lower rotating top plate correspond to the upper and lower parts of the spine on the back of the human body, respectively, or the upper rotating top plate corresponds to the Xinshu (BL15) and Tanzhong (CV17) acupoints on the back of the human body, and the lower rotating top plate corresponds to the Huanzhong and Huantiao (GB30) acupoints on the back of the human body, depending on human comfort. One side of the upper rotating top plate 5 is rotatably connected to the edge of the upper hole 3, and one side of the lower rotating top plate 6 is rotatably connected to the edge of the lower hole 4. A pad 7 covers the surface of the platform body 2. The movable top plate 5 and the lower rotating top plate 6 are located at the lower part of the pad body 7. A drive assembly is provided at the bottom of the basic working platform 1. The output end of the drive assembly is connected to the upper rotating top plate 5 and the lower rotating top plate 6 via a linkage device to form a reciprocating rotational connection structure. The drive device, through the linkage device assembly, pushes the upper rotating top plate 5 and the lower rotating top plate 6 to rotate reciprocally up and down. After the upper rotating top plate 5 and the lower rotating top plate 6 rotate, they drive the pad body 7 to lift, creating pressure on the human body and thus providing a health-care effect. The basic working platform 1 is configured as an integral platform structure, which can be configured as a sofa, bed board, chair, or mattress. The basic working platform 1 can also be configured as a platform structure formed by connecting two or more platforms. (This embodiment...) The platform structure is formed by connecting two platform parts, i.e., a split sofa. The drive assembly in this embodiment includes an upper drive motor 8 and a lower drive motor 9, as well as corresponding upper reducers 10 and lower reducers 11. Control switches I 21 for the upper drive motor 8 and II 22 for the lower drive motor 9 are connected to the main controller 12. The output of the upper drive motor 8 is connected to the upper reducer 10, and the output of the lower drive motor 9 is connected to the lower reducer 11. The linkage assembly includes an upper linkage device and a lower linkage device. The upper drive motor 8 is connected to the upper rotating top plate 5 via the corresponding upper reducer 10 and the upper linkage device to form a reciprocating rotational connection. The lower drive motor 9 is connected to the lower reducer 11 and the lower reducer 12... The linkage device is connected to the lower rotating top plate 6 in a reciprocating rotational connection. In this embodiment, the upper linkage device is configured as an upper linkage mechanism 16 and an upper pin 17. The power output end of the upper drive motor 8 is connected to the input end of the upper reducer 10. The output end of the upper reducer 10 is connected to one end of the upper linkage mechanism 16 via the upper pin 17. The other end of the upper linkage mechanism 16 is connected to the upper rotating top plate 5. After the upper drive motor 8 drives the upper linkage mechanism 16 to move, it causes the upper rotating top plate 5 to rotate up and down. The lower linkage device is configured as a lower linkage mechanism 18 and a lower pin 19. The power output end of the lower drive motor 9 is connected to the input end of the lower reducer 11. The output end of the lower reducer 11 is connected to one end of the lower linkage mechanism 18 via the lower pin 19.The other end of the lower linkage mechanism 18 is connected to the lower rotating top plate 6. After the lower drive motor 9 drives the lower linkage mechanism 18 to move, it drives the lower rotating top plate 6 to rotate up and down. In this embodiment, both the upper drive motor 8 and the lower drive motor 9 are set as 24V DC motors. A sound-absorbing sleeve is fitted on the outside of the upper drive motor 8 and the lower drive motor 9. In this embodiment, the reduction ratio between the upper drive motor 8 and the upper reducer is 1:14-1:15, which is about 100 revolutions per minute, which is in line with the human body's movement frequency. Overheat protection devices are connected to the upper drive motor 8 and the lower drive motor 9. In this embodiment, the overheat protection device adopts a bimetallic strip thermal protector, an electronic protection device, and a thermal magnetic circuit breaker. The main controller 12 is connected to the control switch I 21 and the control switch II 22 by a time switch 20. The main controller 12 is connected to a remote controller. The remote controller and the main controller are connected by wireless remote control. In this embodiment, one side of the upper rotating top plate 5 is connected to the edge of the upper hole 3 by a hinge, and one side of the lower rotating top plate 6 is connected to the edge of the lower hole 3 by a hinge. ,
[0020] The usage process of this invention is as follows: When using this invention for health care or while sleeping, align the upper rotating top plate 5 and the lower rotating top plate 6 with the thoracic and coccygeal vertebrae of the human spine, turn on the switch, and as the upper rotating top plate 5 and the lower rotating top plate 6 rotate at a uniform speed, they push against the thoracic and coccygeal vertebrae of the human spine through the pad body 7, thereby correcting the human spine. In this embodiment, the upper rotating top plate 5, after rotating, reaches a height of about 5.5 cm, which can effectively correct the thoracic spine. The lower rotating top plate 6, also reaching a height of about 5.5 cm, can effectively correct the coccygeal vertebrae. Alternatively, the human body can be rotated to align other acupoints with the upper rotating top plate 5 and the lower rotating top plate 6. In this way, the compression and vibration of the upper rotating top plate 5 and the lower rotating top plate 6 on the corresponding acupoints can promote the orderly vibration of the human body's Qi and blood through repeated cycles over a long period of time. This allows the Qi and blood of the human body and the internal organs to be dispersed, increased in volume, and able to self-regulate and balance, thus achieving a very good health care function.
[0021] Not limited to this, any variations or substitutions conceived without inventive effort should be included within the scope of protection of this invention. Therefore, the scope of protection of this invention should be determined by the scope defined in the claims.
Claims
1. A health care device with regular oscillation and squeezing function, comprising a basic working platform (1), wherein an upper hole (3) and a lower hole (4) are provided on the upper and lower parts of the platform body (2) of the basic working platform (1), and an upper rotating top plate (5) and a lower rotating top plate (6) are respectively installed in the upper hole (3) and the lower hole (4), respectively. One side of the upper rotating top plate (5) is rotatably connected to the edge of the upper hole (3), and one side of the lower rotating top plate (6) is rotatably connected to the edge of the lower hole (4). A pad (7) is covered on the surface of the platform body (2). The rotating top plate (5) and the lower rotating top plate (6) are located at the bottom of the pad (7). The bottom of the basic working platform (1) is equipped with a drive device assembly. The output end of the drive device assembly is connected to the upper rotating top plate (5) and the lower rotating top plate (6) through a linkage device to form an up-and-down reciprocating rotation connection structure. The drive device pushes the upper rotating top plate (5) and the lower rotating top plate (6) to rotate up and down through the linkage device assembly. After the upper rotating top plate (5) and the lower rotating top plate (6) rotate and move, they push the pad (7) upward and squeeze the human body parts to form a health care effect.
2. The health care device with regular oscillation and squeezing function according to claim 1, characterized in that... The basic working platform (1) is set as an overall platform structure, which can be set as a sofa, bed board, chair or Simmons mattress.
3. The health care device with regular oscillation and squeezing function according to claim 1, characterized in that... The basic working platform (1) is configured as a platform structure formed by connecting two or more platforms.
4. The health care device with regular oscillation and squeezing function according to claim 1, characterized in that... The drive assembly includes an upper drive motor (8) and a lower drive motor (9), as well as corresponding upper reducers (10) and lower reducers (11). The control switch I (21) of the upper drive motor (8) and the control switch II (22) of the lower drive motor (9) are connected to the main controller (12). The output end of the upper drive motor (8) is connected to the upper reducer (10) and the output end of the lower drive motor (9) is connected to the lower reducer (11). The linkage assembly includes an upper linkage device and a lower linkage device. The upper drive motor (8) forms a reciprocating rotation connection with the upper rotating top plate (5) through the corresponding upper reducer (10) and the upper linkage device. The lower drive motor (9) forms a reciprocating rotation connection with the lower rotating top plate (6) through the corresponding lower reducer (11) and the lower linkage device.
5. The health care device with regular oscillation and squeezing function according to claim 4, characterized in that... The upper linkage device includes an upper eccentric wheel (12) and an upper connecting rod (13). One end of the upper connecting rod (13) is connected to the upper eccentric wheel (12), and the other end is connected to the upper rotating top plate (5). The power output end of the upper drive motor (8) is connected to the input end of the upper reducer (10) through a transmission connection. The output end of the upper reducer (10) is connected to the upper rotating top plate (5) through the upper eccentric wheel (12) and the upper connecting rod (13). After the upper drive motor (8) drives the upper eccentric wheel (12) to rotate, it drives the upper rotating top plate (5) to rotate up and down through the upper connecting rod (13). The lower linkage device includes a lower eccentric wheel (14) and a lower connecting rod (15). One end of the lower connecting rod (15) is connected to the lower eccentric wheel (14), and the other end is connected to the lower rotating top plate (6). The power output end of the lower drive motor (9) is connected to the input end of the lower reducer (11). The output end of the lower reducer (11) is connected to the lower rotating top plate (6) through the lower eccentric wheel (14) and the lower connecting rod (15). After the lower drive motor (9) drives the lower eccentric wheel (14) to rotate, it drives the lower rotating top plate (6) to rotate up and down through the lower connecting rod (15).
6. The health care device with regular oscillation and squeezing function according to claim 4, characterized in that... The upper linkage device is configured as an upper linkage mechanism (16) and an upper pin (17). The power output end of the upper drive motor (8) is connected to the input end of the upper reducer (10). The output end of the upper reducer (10) is connected to one end of the upper linkage mechanism (16) through the upper pin (17). The other end of the upper linkage mechanism (16) is connected to the upper rotating top plate (5). After the upper drive motor (8) drives the upper linkage mechanism (16) to move, it causes the upper rotating top plate (5) to flip up and down. The lower linkage device is configured as a lower linkage mechanism (18) and a lower pin (19). The power output end of the lower drive motor (9) is connected to the input end of the lower reducer (11). The output end of the lower reducer (11) is connected to one end of the lower linkage mechanism (18) through the lower pin (19). The other end of the lower linkage mechanism (18) is connected to the lower rotating top plate (6). After the lower drive motor (9) drives the lower linkage mechanism (18) to move, it drives the lower rotating top plate (6) to rotate up and down.
7. The health care device with regular oscillating compression function according to claim 4, 5 or 6, characterized in that... The upper drive motor (8) and the lower drive motor (9) are both set as 24V DC motors. The upper drive motor (8) and the lower drive motor (9) are covered with a sound-absorbing sleeve. The upper drive motor (8) and the lower drive motor (9) are connected with an overheat protection device.
8. The health care device with regular oscillation and squeezing function according to claim 4, characterized in that... The main controller (12) is connected to a time-controlled switch (20) between control switch I (21) and control switch II (22). The main controller (12) is connected to a remote controller, and the remote controller and the main controller are connected by a wireless remote control.
9. The health care device with regular oscillation and squeezing function according to claim 1, characterized in that... The upper rotating top plate (5) is connected to the edge of the upper hole (3) by a hinge, and the lower rotating top plate (6) is connected to the edge of the lower hole (3) by a hinge.