Conversion device, conversion assembly, conversion system and method of operation thereof

Abstract

The application provides a conversion device, which comprises a first cover, a second cover, a positive pressure input part, a negative pressure input part and an output part. A flow guide cavity is formed between the first cover and the second cover. The first cover and the second cover are movably connected to make the positive pressure input part communicate with a positive pressure flow guide cavity of the flow guide cavity under the mechanical drive from outside, and make the output part communicate with the positive pressure flow guide cavity to facilitate the wearer to perform flexion training with the help of the hand part, and make the negative pressure input part communicate with a negative pressure flow guide cavity of the flow guide cavity, and make the output part communicate with the negative pressure flow guide cavity to facilitate the wearer to perform extension training with the help of the hand part, thereby improving the use safety and reducing the cost. The application further provides a conversion assembly and a conversion system comprising the conversion device, and an operation method of the conversion system.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to conversion devices, conversion components, conversion systems and their operating methods. Background Technology

[0002] In the existing technology, hand rehabilitation training devices that can only realize flexion or extension movements of the fingers in one direction have a narrow scope of application and cannot enable patients with different conditions to achieve the best rehabilitation training purpose. In order to meet the needs of patients, it is necessary to develop hand rehabilitation training devices that can realize finger separation training.

[0003] Chinese patent CN205698423U discloses a wearable hand rehabilitation training device that uses an electromagnetic valve as a switching device to control the input and output of gas. Multiple electromagnetic valves are set up one-to-one with multiple pneumatic hoses and bionic muscle strips to achieve combined training of multiple fingers in different postures.

[0004] However, the complex structure of solenoid valves makes them susceptible to external factors such as temperature and voltage, resulting in poor safety during use. Furthermore, to enable finger splitting training, the solenoid valves need to be matched one-to-one with each finger sleeve of the wearable device, which increases the product's manufacturing cost.

[0005] Therefore, it is necessary to design a new type of conversion device to avoid the aforementioned problems existing in the prior art. Summary of the Invention

[0006] The purpose of this invention is to provide a conversion device for flexion and extension movements in an assistive wearable device, including a conversion component and a conversion system, as well as a method for operating the conversion system, to improve safety and reduce cost.

[0007] To achieve the above objectives, the conversion device of the present invention includes a first cover, a second cover, a positive pressure input section, a negative pressure input section, and an output section; the first cover and the second cover are disposed opposite to each other to form a flow guiding cavity, the flow guiding cavity including a positive pressure flow guiding cavity and a negative pressure flow guiding cavity; any one of the positive pressure input section, the negative pressure input section, and the output section is disposed in any one of the first cover and the second cover to communicate with the flow guiding cavity; the first cover and the second cover are movably connected to undergo relative movement under external mechanical drive, the relative movement including a first relative movement and a second relative movement; the first relative movement connects the positive pressure input section to the positive pressure flow guiding cavity and the output section to the positive pressure flow guiding cavity; the second relative movement connects the negative pressure input section to the negative pressure flow guiding cavity and the output section to the negative pressure flow guiding cavity.

[0008] The beneficial effects of the conversion device of the present invention are as follows: the first cover and the second cover are arranged opposite to each other to form a guide cavity including a positive pressure guide cavity and a negative pressure guide cavity, and the positive pressure input part, the negative pressure input part and the output part are in communication with the guide cavity, eliminating the need for multiple solenoid valves for separate control. The first cover and the second cover are movably connected so that, under external mechanical drive, the positive pressure input part communicates with the positive pressure guide cavity of the guide cavity, and the output part communicates with the positive pressure guide cavity, thereby facilitating the wearable device to assist the fingers in flexion training, and the negative pressure input part communicates with the negative pressure guide cavity of the guide cavity, and the output part communicates with the negative pressure guide cavity, thereby facilitating the wearable device to assist the fingers in extension training, improving safety and reducing cost.

[0009] Preferably, the positive pressure guiding cavity and the negative pressure guiding cavity are arranged opposite to each other, and the first relative movement and the second relative movement are in opposite directions, so that during the first relative movement, the output part communicates with the positive pressure guiding cavity from the negative pressure guiding cavity, and during the second relative movement, the output part communicates with the negative pressure guiding cavity from the positive pressure guiding cavity. Its advantages are: it simplifies the device structure and shortens the positive and negative pressure switching time.

[0010] More preferably, both the first relative motion and the second relative motion are rotational motions of the first cover body relative to the second cover body, with the first cover body performing the rotational motion about a rotation axis.

[0011] More preferably, the positive pressure guiding cavity and the negative pressure guiding cavity are arranged as mirror images of each other around the rotation axis.

[0012] Further preferably, the flow guiding cavity further includes an output cavity, and an environmental through-hole is provided on the top of the first cover; during the first relative movement, the negative pressure input part communicates with the output cavity to communicate with the external environment through the environmental through-hole; during the second relative movement, the positive pressure input part communicates with the output cavity to communicate with the external environment through the environmental through-hole. Its beneficial effect is that it ensures that the air pressure detection unit, which is connected to the positive pressure input part and the negative pressure input part, always has one path connected to the environment during operation, which is beneficial to the normal operation of the air pressure detection unit.

[0013] More preferably, the positive pressure guiding cavity includes a positive pressure outer cavity, the negative pressure guiding cavity includes a negative pressure outer cavity, and the positive pressure outer cavity and the negative pressure outer cavity are arranged as mirror images of each other around the rotation axis.

[0014] More preferably, the output cavity is arranged around the rotation axis, the output cavity is located between the positive pressure guiding cavity and the negative pressure guiding cavity, and communicates with either the positive pressure guiding cavity or the negative pressure guiding cavity.

[0015] More preferably, the bottom of the first cover is provided with a plurality of flow guiding channels, and the top of the second cover includes a sealing surface. The bottom of the first cover and the top of the second cover are tightly fitted together to form the flow guiding cavity defined by the sealing surface and the plurality of flow guiding channels. Its advantages are: simplified structure and ease of subsequent maintenance.

[0016] More preferably, the main components of the first cover and the second cover are self-lubricating materials. This has the advantage of improving the wear resistance of the first cover and the second cover, which is beneficial for the long-term stable operation of the conversion device.

[0017] More preferably, the bottom of the first cover is provided with a lubrication channel around the rotation axis to accommodate the lubricating medium. The lubrication channel is located between the bottom edge of the first cover and the areas where the positive pressure guide cavity and the negative pressure guide cavity are located. This improves the wear resistance of the first cover and the second cover, which is beneficial to the long-term stable operation of the conversion device.

[0018] The conversion assembly of the present invention includes a mechanical drive unit, a transmission unit, and a conversion device. The conversion device includes a first cover and a second cover disposed opposite to each other. The mechanical drive unit is movably connected to the transmission unit. The second cover is disposed on the mechanical drive unit. The transmission unit passes through the second cover and is disposed on either the first cover or the second cover, so that the first cover and the second cover move relative to each other under the drive of the mechanical drive unit.

[0019] The beneficial effects of the conversion component of the present invention are as follows: It eliminates the need for multiple solenoid valves for separate control. Instead, it relies on the movable connection between the first cover and the second cover, driven by the mechanical drive unit and the transmission unit, to connect the positive pressure input unit and the positive pressure guiding cavity, as well as the output unit, thereby facilitating subsequent flexion training of the hand via a wearable device. Conversely, it connects the negative pressure input unit and the negative pressure guiding cavity, as well as the output unit, thereby facilitating subsequent extension training of the hand via a wearable device. This improves safety and reduces costs.

[0020] Preferably, the second cover is fixedly connected to the mechanical drive unit, and the transmission unit passes through the second cover and is fixedly connected to the first cover, so that the first cover rotates relative to the second cover under the drive of the mechanical drive unit.

[0021] Further preferably, it also includes a clamping part, wherein the first cover and the second cover are disposed opposite to each other to form a flow guiding cavity, and the clamping part is disposed between the mechanical drive part and the second cover to provide a force toward the bottom of the second cover and to enhance the sealing effect on the flow guiding cavity.

[0022] Further preferably, it also includes a blocking member disposed on the mechanical drive unit to at least partially offset the frictional force generated by the relative movement of the first cover and the second cover.

[0023] The conversion system of the present invention includes a main control unit, an air supply unit, an air pressure detection unit, and a conversion assembly. The conversion assembly includes a mechanical drive unit, a transmission unit, and the conversion device connected to each other. The conversion device includes a first cover, a second cover, a positive pressure input unit, a negative pressure input unit, and an output unit. The first cover and the second cover are arranged opposite to each other to form a flow guiding cavity. The flow guiding cavity includes a first flow guiding cavity, a second flow guiding cavity, and an output cavity. The output cavity communicates with the second flow guiding cavity. The air supply unit is connected to the positive pressure input unit and the negative pressure input unit respectively to form a positive pressure air path and provides positive pressure by filling the positive pressure flow guiding cavity with air through the positive pressure input unit. The system forms a negative pressure air path and draws air from the negative pressure guide cavity through the negative pressure input section to provide negative pressure; the air pressure detection unit is connected to the positive pressure air path and the negative pressure air path respectively to obtain the air pressure information of the positive pressure air path and the negative pressure air path and send it to the main control unit; the main control unit is connected to the air supply unit to control the air supply unit to provide both positive and negative pressure simultaneously; the main control unit is connected to the air pressure detection unit to obtain the relative position information between the first cover and the second cover based on the air pressure information; the main control unit is connected to the mechanical drive unit to drive the mechanical drive unit to control the relative movement state of the first cover and the second cover through the transmission unit.

[0024] The operation method of the conversion system of the present invention includes: S0: Provide a wearable device and connect the wearable device to the output unit; S1: The air pressure detection unit feeds back the first air pressure information to the main control unit, so that the main control unit can determine the end of the second relative motion based on the first air pressure information, and control the air supply unit to work to output positive pressure and negative pressure simultaneously; S2: The main control unit sends a first motion command to the mechanical drive unit, and the mechanical drive unit drives the first cover and the second cover to perform a first relative motion through the transmission unit according to the first motion command, so as to assist the wearable device in flexion motion; S3: The air pressure detection unit feeds back the second air pressure information to the main control unit, so that the main control unit can determine the end of the first relative motion based on the second air pressure information; S4: The main control unit sends a second motion command to the mechanical drive unit. The mechanical drive unit drives the first cover and the second cover to perform a second relative motion through the transmission unit according to the second motion command, so as to assist the wearable device in performing an extension motion.

[0025] For the beneficial effects of the conversion system and its operation method described in this invention, please refer to the aforementioned beneficial effects of the conversion components, which will not be repeated here.

[0026] Preferably, the first motion command includes a first frequency modulation command. In step S2, the mechanical drive unit controls the rate of the first relative motion through the transmission unit according to the first frequency modulation command, so as to adjust the interval time of the flexion motion.

[0027] Preferably, the second motion command includes a second frequency modulation command. In step S4, the mechanical drive unit controls the rate of the second relative motion through the transmission unit according to the second frequency modulation command, so as to adjust the interval time of the extension motion.

[0028] Preferably, step S1 further includes, after starting the main control unit and controlling the air supply unit to work through the main control unit, the main control unit obtains the relative position information between the first cover and the second cover based on the third air pressure information fed back by the air pressure detection unit, and then drives the mechanical drive unit to drive the first cover and the second cover to perform the second relative movement through the transmission unit, so as to draw air from the wearable device through the negative pressure input unit, so that the wearable device can be extended for easy wearing. Attached Figure Description

[0029] Figure 1 This is a structural block diagram of the conversion system according to an embodiment of the present invention; Figure 2 for Figure 1 The diagram shows the structure of the wearable device. Figure 3 This is a schematic diagram of the conversion device according to an embodiment of the present invention; Figure 4 for Figure 3 The rear view of the first cover shown; Figure 5 for Figure 3 The front view of the second cover shown; Figure 6a This is a schematic diagram of the conversion component of the present invention; Figure 6b for Figure 6a Top view; Figure 7 for Figure 3 The diagram shows the conversion device in its initial state with the cover closed. Figure 8 for Figure 3 The diagram shows the conversion device in its first operating state with the cover closed. Figure 9 for Figure 3 The diagram shows the conversion device in its second operating state with the cover closed. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without inventive effort are within the scope of protection of this invention. Unless otherwise defined, the technical or scientific terms used herein should have the ordinary meaning understood by those skilled in the art. The terms "comprising" and similar expressions used herein mean that the element or object preceding the word covers the element or object listed following the word and its equivalents, but do not exclude other elements or objects.

[0031] To address the problems existing in the prior art, the present invention provides a switching device, a switching component, and a switching system for flexion and extension movements in an assistive wearable device, as well as a method for operating the switching system, to improve safety and reduce costs.

[0032] Figure 1 This is a structural block diagram of a conversion system according to some embodiments of the present invention. Figure 2 for Figure 1 The diagram shows the structure of the wearable device.

[0033] Reference Figure 1 The conversion system 1 includes a main control unit 11, an air supply unit 13, an air pressure detection unit 12, a conversion component 14, and a wearable device 15.

[0034] The main control unit 11 is connected to the gas supply unit 13 to control the gas supply unit 13 to simultaneously provide positive and negative pressure.

[0035] The gas supply unit 13 is connected to the positive pressure input section and the negative pressure input section of the switching component 14 via the gas passage 16.

[0036] In some embodiments of the present invention, the air passage 16 includes a positive pressure air passage and a negative pressure air passage, and the air supply unit 13 has a positive pressure blowing port and a negative pressure suction port.

[0037] Specifically, the positive pressure blowing port is connected to the positive pressure input section of the switching component 14 to form the positive pressure air path and to provide positive pressure by inflating the positive pressure guiding cavity in the switching component 14 through the positive pressure input section, thereby assisting the wearable device 15 in flexion movement.

[0038] Specifically, the negative pressure inhalation port is used to connect with the negative pressure input section of the switching component 14 to form the negative pressure air path, so as to draw air from the negative pressure guide cavity in the switching component 14 through the negative pressure input section to provide negative pressure and assist the wearable device 15 in stretching movements.

[0039] More specifically, the air supply unit 13 consists of a first air pump and a second air pump, the first air pump having the positive pressure blowing port to provide positive pressure; and the second air pump having the negative pressure suction port to provide negative pressure.

[0040] The air pressure detection unit 12 is connected to the positive pressure air path and the negative pressure air path respectively, so as to obtain the air pressure information of the positive pressure air path and the negative pressure air path and send it to the main control unit 11.

[0041] In some embodiments of the present invention, the air pressure detection unit 12 has a positive pressure detection port and a negative pressure detection port, which are respectively connected to the positive pressure air path and the negative pressure air path, and respectively detect the air pressure information of the positive pressure air path and the air pressure information of the negative pressure air path in real time, and send the air pressure information of the positive pressure air path and the air pressure information of the negative pressure air path to the main control unit 11.

[0042] Specifically, refer to Figure 1 and Figure 2 The wearable device 15 is a rehabilitation training glove. Each wearable unit 21 has several corrugated tubes 22 on its surface and an air duct (not shown in the figure) connecting each corrugated tube 22. All the air ducts of the wearable units 21 are connected to the main air duct 23. Since the corrugated tubes 22 have extensibility, gas is introduced into the main air duct 23 through the air pressure detection unit 12 to extend all the corrugated tubes 22, thereby assisting all the wearable units 21 to perform flexion movements together; gas is extracted from the main air duct 23 through the air pressure detection unit 12 to compress all the corrugated tubes 22, thereby assisting each wearable unit 21 that has completed the flexion movement to perform an extension movement synchronously.

[0043] In some embodiments of the present invention, the conversion assembly 14 includes a mechanical drive unit, a transmission unit, and a conversion device interconnected with each other. The conversion device includes a first cover and a second cover disposed opposite to each other to form a flow guiding cavity, and also includes at least two output units, a positive pressure input unit, and a negative pressure input unit.

[0044] In some embodiments of the present invention, the main control unit 11 is connected to the air pressure detection unit 12 to obtain the relative position information between the first cover and the second cover of the switching component 14 based on the air pressure information.

[0045] In some embodiments of the present invention, the main control unit 11 is connected to the switching component 14 to control the movement state between the first cover and the second cover of the switching component 14.

[0046] In some embodiments of the present invention, any one of the positive pressure input section, the negative pressure input section, and the output section is disposed in any one of the first cover and the second cover, so as to communicate with the flow guiding cavity.

[0047] Figure 3 This is a schematic diagram of the structure of a conversion device according to some embodiments of the present invention.

[0048] Reference Figures 1 to 3 The conversion device 3 includes a first cover 31, a second cover 32, a positive pressure input section 33, a negative pressure input section 34, and an output section 35. The air pressure detection unit 12 is connected to the positive pressure input section 33 and the negative pressure input section 34; the output section 35 is connected to the main air duct 23 to simultaneously inflate or depress each of the bellows 22.

[0049] Reference Figure 3 The first cover 31 and the second cover 32 are arranged opposite to each other to form a flow guiding cavity; the first cover 31 and the second cover 32 are movably connected to each other to move relative to each other under external mechanical drive.

[0050] In some embodiments of the present invention, the flow guiding cavity includes a positive pressure flow guiding cavity and a negative pressure flow guiding cavity, and the relative motion includes a first relative motion and a second relative motion. The first relative motion connects the positive pressure input section 33 to the positive pressure flow guiding cavity and sequentially connects the output section 35 to the positive pressure flow guiding cavity to simultaneously inflate each bellows of the wearable device 15; the second relative motion connects the negative pressure input section 34 to the negative pressure flow guiding cavity and connects the output section 35 to the negative pressure flow guiding cavity to simultaneously evacuate air from each bellows of the wearable device 15.

[0051] In some embodiments of the present invention, the positive pressure guiding cavity and the negative pressure guiding cavity are arranged opposite to each other, and the first relative movement and the second relative movement are performed in opposite directions, so that during the first relative movement, the output part 35 communicates with the positive pressure guiding cavity from the negative pressure guiding cavity, and during the second relative movement, the output part 35 communicates with the negative pressure guiding cavity from the positive pressure guiding cavity.

[0052] In some embodiments of the present invention, reference is made to Figure 3 The positive pressure input unit 33, the negative pressure input unit 34, and the output unit 35 are all disposed on the second cover 32. The first relative motion and the second relative motion are both rotational motions of the first cover 31 relative to the second cover 32, and the first cover 31 performs the rotational motion around a rotation axis. Specifically, the rotation axis is the central axis of the first cover 31, that is, the central axis of the first central through hole 37.

[0053] In some embodiments of the present invention, the positive pressure guiding cavity and the negative pressure guiding cavity are arranged as mirror images of each other about the rotation axis.

[0054] In some embodiments of the present invention, the main components of the first cover 31 and the second cover 32 are self-lubricating materials to improve the wear resistance of the first cover 31 and the second cover 32, which is beneficial to the long-term stable operation of the conversion device 3.

[0055] In some specific embodiments of the present invention, the self-lubricating material is ceramic.

[0056] Figure 4 for Figure 3 The rear view of the first cover shown. Figure 5 for Figure 3 The front view of the second cover shown.

[0057] Reference Figure 3 , Figure 4 and Figure 5 The first cover 31 and the second cover 32 are hollowed out in the middle to form the first central through hole 37 and the second central through hole 54, respectively, to accommodate the mechanical drive unit. The top of the second cover 32 is provided with an output channel 53, which corresponds to and communicates with the output unit 35. The top of the second cover 32 is also provided with a positive pressure input channel 51 and a negative pressure input channel 52, which communicate with the positive pressure input unit 33 and the negative pressure input unit 34, respectively.

[0058] The bottom of the first cover 31 is provided with several flow channels (not shown in the figure) to help form the first flow cavity 41 and the second flow cavity 42.

[0059] Specifically, the top of the second cover 32 includes a sealing surface, and the bottom of the first cover 31 is tightly fitted to the top of the second cover 32 to form the flow guiding cavity defined by the sealing surface and the plurality of flow guiding channels (not shown in the figure). The sealing surface is the dense surface of the top of the second cover 32 excluding the output channel 53, the second central through hole 54, the positive pressure input channel 51, and the negative pressure input channel 52.

[0060] Specifically, the first guide cavity 41 and the second guide cavity 42 are arranged as mirror images of each other around the rotation axis.

[0061] More specifically, both the first guide cavity 41 and the second guide cavity 42 are arc-shaped cavities and are mirror images of each other about the rotation axis.

[0062] In some embodiments of the present invention, the flow guiding cavity further includes an output cavity, see reference. Figure 3 and Figure 4 The top of the first cover 31 is provided with an environmental through hole 36 to be opposite to the output cavity 43, and the output cavity 43 is in communication with the second guide cavity 42.

[0063] When the first cover 31 rotates relative to the second cover 32, the guide cavity that communicates with the positive pressure input part 33 becomes a positive pressure guide cavity, and the guide cavity that communicates with the negative pressure input part 34 becomes a negative pressure guide cavity.

[0064] Specifically, the output cavity 43 is arranged around the rotation axis, the output cavity 43 is located between the positive pressure guiding cavity and the negative pressure guiding cavity, and communicates with either the positive pressure guiding cavity or the negative pressure guiding cavity.

[0065] During the first relative motion, the negative pressure input section 34 communicates with the output cavity 43 to communicate with the external environment through the environmental through hole 36; during the second relative motion, the positive pressure input section 33 communicates with the output cavity 43 to communicate with the external environment through the environmental through hole 36, ensuring that the air pressure detection unit 12, which is connected to the positive pressure input section 33 and the negative pressure input section 34, always has one path communicating with the environment during operation, which is beneficial to the normal operation of the air pressure detection unit 12.

[0066] Reference Figure 4The bottom of the first cover 31 is provided with a lubrication channel 44 around the rotation axis (not shown in the figure) to accommodate the lubricating medium. The lubrication channel 44 is located between the bottom edge of the first cover 31 and the area where the positive pressure guide cavity and the negative pressure guide cavity are located, so as to improve the wear resistance of the first cover 31 and the second cover 32 and facilitate the long-term stable operation of the conversion device 3.

[0067] Figure 6a This is a schematic diagram of the structure of a conversion component according to some embodiments of the present invention. Figure 6b for Figure 6a Top view.

[0068] Reference Figure 1 and Figure 6a The conversion assembly 14 includes a mechanical drive unit 61, a transmission unit 62, and the conversion device 3, which are interconnected. The mechanical drive unit 61 is movably connected to the transmission unit 62. The second cover 32 is disposed on the mechanical drive unit 61. The transmission unit 62 passes through the second cover 32 and is disposed on the first cover 31. The main control unit 11 is connected to the mechanical drive unit 61 so that the first cover 31 rotates relative to the second cover 32 under the drive of the mechanical drive unit 61.

[0069] Specifically, refer to Figure 3 The top of the first cover 31 has a pin groove 38, as shown in the reference. Figure 4 , Figure 5 and Figure 6a One end of the transmission part 62 passes through the first central through hole 37 and the second central through hole 54 and is fixedly connected to the pin groove 38, and the other end is fixedly connected to the mechanical drive part 61.

[0070] In some embodiments of the present invention, the mechanical drive unit 61 is a long-shaft horizontal hole geared motor, and the transmission unit 62 is a pin.

[0071] In some embodiments of the present invention, the transmission part 62 passes through either the first cover 31 or the second cover 32, so as to cause the first cover 31 and the second cover 32 to move relative to each other under the drive of the mechanical drive part 61.

[0072] In some embodiments of the present invention, the conversion assembly 14 further includes a clamping part, which is a conical spring and is disposed between the top of the mechanical drive part 61 and the bottom of the second cover 32 to provide a force toward the bottom of the second cover 32 and to enhance the sealing effect on the guide cavity.

[0073] Specifically, a certain gas pressure needs to be controlled within the flow guiding cavity to maintain the outlet pressure of the output section 35 within a suitable range. By selecting the model of the conical spring, the pressure between the first cover 31 and the second cover 32 can be controlled to a certain extent to ensure the airtightness of the flow guiding cavity and to adjust the outlet pressure of the output section 35.

[0074] When the gas pressure inside the flow guide cavity is greater than the pressure provided by the conical spring between the first cover 31 and the second cover 32, the gas escapes from between the first cover 31 and the second cover 32 until the outlet pressure of the output section 35 is maintained within a suitable range.

[0075] Furthermore, the switching component 14 also includes a blocking member disposed on the mechanical drive unit 61 to at least partially offset the frictional force generated by the relative movement of the first cover 31 and the second cover 32.

[0076] Reference Figure 6a and Figure 6b The blocking member (not shown in the figure) includes a first blocking member 631 and a second blocking member 632. The first blocking member 631 and the second blocking member 632 are both fixedly connected to the top of the mechanical drive unit 61. The first blocking member 631 is disposed near the output unit 35, and the second blocking member 632 is disposed near the positive pressure input unit 33, so as not to hinder the relative movement of the first cover 31 relative to the second cover 32, while limiting the output unit 35 and the positive pressure input unit 33.

[0077] Figure 7 for Figure 3 The diagram shows the conversion device in its initial state with the cover closed.

[0078] The meaning of the cover diagram is: the structure formed by cutting the first cover 31 of the conversion device 3 along the direction parallel to the horizontal plane, removing the top and retaining the plurality of guide channels.

[0079] This invention also provides an operation method for the conversion system 1, including: S0: Provide the wearable device 15 and connect the wearable device 15 to the output unit 35; S1: The air pressure detection unit 12 feeds back the first air pressure information to the main control unit 11, so that the main control unit 11 can determine the end of the second relative motion based on the first air pressure information, and control the air supply unit 13 to work to output positive pressure and negative pressure simultaneously; S2: The main control unit 11 sends a first motion command to the mechanical drive unit 61. The mechanical drive unit 61 drives the first cover 31 and the second cover 32 to perform a first relative motion through the transmission unit 62 according to the first motion command, so as to assist the wearable device 15 in flexion motion. S3: The air pressure detection unit 12 feeds back the second air pressure information to the main control unit 11, so that the main control unit 11 can determine the end of the first relative motion based on the second air pressure information; S4: The main control unit 11 sends a second motion command to the mechanical drive unit 61. The mechanical drive unit 61 drives the first cover 31 and the second cover 32 to perform a second relative motion through the transmission unit 62 according to the second motion command, so that the wearable device 15 can perform an extension motion.

[0080] Reference Figure 1 and Figure 7 In step S1 of some embodiments of the present invention, before the conversion system 1 is started, the output section 35 and the negative pressure input section 34 are both connected to the first guide cavity 41, the first guide cavity 41 becomes a negative pressure guide cavity, the second guide cavity 42 is connected to the output cavity 43, and then connected to the positive pressure input section 33, so that the second guide cavity 42 becomes a positive pressure guide cavity.

[0081] In some embodiments of the present invention, step S1 further includes, after starting the main control unit 11 and controlling the air supply unit 13 to work, the main control unit 11 obtains the relative position information between the first cover 31 and the second cover 32 based on the third air pressure information fed back by the air pressure detection unit 12, and then drives the mechanical drive unit 61 to drive the first cover 31 and the second cover 32 to perform the second relative movement through the transmission unit 62, so as to draw air from all the bellows of the wearable device 15 through the negative pressure input unit 34, and the gas is discharged through the first guide cavity 41, which becomes the negative pressure guide cavity, so that each wearable unit 21 of the wearable device 15 can be extended for easy wearing.

[0082] Reference Figure 3 and Figure 7 During the air extraction process of the negative pressure input section 34, the positive pressure input channel 51 is connected to the output cavity 43 and located directly below the environmental through hole 36 to connect to the external environment and ensure the normal operation of the air pressure detection unit 12.

[0083] Figure 8 for Figure 3 The diagram shows the conversion device in its first operating state with the cover closed. Figure 9 for Figure 3The diagram shows the conversion device in its second operating state with the cover closed.

[0084] In step S1, when gas enters the guide cavity through the positive pressure input section 33, refer to... Figure 1 and Figure 8 Gas enters and fills the second guide cavity 42 through the positive pressure input channel 51, making the second guide cavity 42 a positive pressure guide cavity; the first cover 31 rotates clockwise relative to the second cover (not shown in the figure) located below it to perform the first relative movement, so that the output part 35 enters the positive pressure guide cavity, and gas is inflated through the output part 35 to each bellows of the wearable device 15, causing the corresponding bellows to extend to assist in flexion movement.

[0085] During the first relative motion, the negative pressure input channel 52 is always connected to the environmental through hole 36 to ensure continuous air intake, which is beneficial to the normal operation of the air pressure detection unit 12.

[0086] After the first relative motion ends, the main control unit 11 connects the air pressure detection unit 12 to the negative pressure input unit 34 to pump air, and then refers to... Figure 8 and Figure 9 The first cover 31 from Figure 8 The state shown is rotated counterclockwise to perform the second relative motion and to connect the output section 35 with the second guide cavity 42. Since gas is drawn from the negative pressure input section 34 through the negative pressure input channel 52 into the second guide cavity 42, the second guide cavity 42 becomes a negative pressure guide cavity, thereby compressing each bellows of the wearable unit 15, thereby assisting the wearable unit 15 in performing extension movements.

[0087] During the second relative motion, the positive pressure input channel 51 is always connected to the environmental through hole 36 to ensure continuous inflation, which is beneficial to the normal operation of the air pressure detection unit 12.

[0088] In some embodiments of the present invention, the first motion command includes a first frequency modulation command. In step S2, the mechanical drive unit 61 controls the rate of the first relative motion through the transmission unit 62 according to the first frequency modulation command, so as to adjust the interval time of the flexion motion.

[0089] In some embodiments of the present invention, the second motion command includes a second frequency modulation command. In step S4, the mechanical drive unit 61 controls the rate of the second relative motion through the transmission unit 62 according to the second frequency modulation command, so as to adjust the interval time of the extension motion.

[0090] While embodiments of the present invention have been described in detail above, it will be apparent to those skilled in the art that various modifications and variations can be made to these embodiments. However, it should be understood that such modifications and variations fall within the scope and spirit of the invention as set forth in the claims. Furthermore, the invention described herein may have other embodiments and can be implemented or carried out in various ways.

Claims

1. A conversion device for use in assistive wearable devices to perform flexion and extension movements, characterized in that, The conversion device includes a first cover, a second cover, a positive pressure input section, a negative pressure input section, and an output section; The first cover and the second cover are disposed opposite to each other to form a flow guiding cavity, the flow guiding cavity including a first flow guiding cavity, a second flow guiding cavity and an output cavity, the output cavity communicating with the second flow guiding cavity; The positive pressure input section, the negative pressure input section, and the output section are all disposed on the second cover and communicate with the flow guiding cavity; The first cover and the second cover are movably connected to each other to undergo relative rotational motion under external mechanical drive. The relative rotational motion includes a first rotational direction motion and a second rotational direction motion about the rotation axis of the first cover. The first rotational movement connects the positive pressure input section to the second flow guide cavity, and also connects the output section to the positive pressure input section; The second rotational movement connects the negative pressure input section to the second flow guide cavity and the output section to the negative pressure input section.

2. The conversion device according to claim 1, characterized in that, The second guide cavity and the first guide cavity are arranged as mirror images of each other about the rotation axis.

3. The conversion device according to claim 2, characterized in that, An environmental access hole is provided at the top of the first cover; During the movement in the first rotational direction, the negative pressure input section communicates with the environmental through hole to communicate with the external environment through the environmental through hole; During the second rotational movement, the positive pressure input section communicates with the environmental through hole to communicate with the external environment.

4. The conversion device according to claim 1, characterized in that, The bottom of the first cover is provided with a plurality of flow channels, and the top of the second cover includes a sealing surface. The bottom of the first cover and the top of the second cover are tightly fitted together to form the flow cavity defined by the sealing surface and the plurality of flow channels.

5. The conversion device according to claim 4, characterized in that, The main components of the first cover and the second cover are self-lubricating materials.

6. The conversion device according to claim 5, characterized in that, The bottom of the first cover is provided with a lubrication channel around the rotation axis to accommodate the lubricating medium. The lubrication channel is located between the bottom edge of the first cover and the area where the second guide cavity and the first guide cavity are located.

7. A conversion component, characterized in that, It includes a mechanical drive unit, a transmission unit, and a conversion device according to any one of claims 1-6, wherein the conversion device includes a first cover and a second cover disposed opposite to each other; The mechanical drive unit is movably connected to the transmission unit, the second cover is disposed on the mechanical drive unit, and the transmission unit passes through the second cover and is disposed on either the first cover or the second cover, so that the first cover and the second cover can move relative to each other under the drive of the mechanical drive unit.

8. The conversion component according to claim 7, characterized in that, The second cover is fixedly connected to the mechanical drive unit, and the transmission unit passes through the second cover and is fixedly connected to the first cover, so that the first cover rotates relative to the second cover under the drive of the mechanical drive unit.

9. The conversion component according to claim 8, characterized in that, It also includes a clamping part, wherein the first cover and the second cover are disposed opposite to each other to form a flow guiding cavity, and the clamping part is disposed between the mechanical drive part and the second cover to provide a force toward the bottom of the second cover and to enhance the sealing effect on the flow guiding cavity.

10. The conversion component according to claim 7, characterized in that, It also includes a blocking member disposed on the mechanical drive unit to at least partially offset the frictional force generated by the relative movement of the first cover and the second cover.

11. A conversion system, characterized in that, It includes a main control unit, an air supply unit, an air pressure detection unit, and a conversion component, wherein the conversion component includes a mechanical drive unit, a transmission unit, and a conversion device as described in any one of claims 1-6, which are interconnected. The air supply unit is connected to the positive pressure input section and the negative pressure input section respectively to form a positive pressure air path and provide positive pressure by filling the second guide cavity with air through the positive pressure input section, and to form a negative pressure air path and provide negative pressure by drawing air from the second guide cavity through the negative pressure input section. The air pressure detection unit is connected to the positive pressure air path and the negative pressure air path respectively, so as to obtain the air pressure information of the positive pressure air path and the negative pressure air path and send it to the main control unit; The main control unit is connected to the gas supply unit to control the gas supply unit to simultaneously provide positive and negative pressure; The main control unit is connected to the air pressure detection unit to obtain the relative position information between the first cover and the second cover based on the air pressure information; The main control unit is connected to the mechanical drive unit to drive the mechanical drive unit to control the relative motion state of the first cover and the second cover through the transmission unit.

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