A conversion device applied to a treadmill

Abstract

The application discloses a conversion device applied to a treadmill, the treadmill comprising a safety belt and a sensor, the conversion device comprising a rotating shaft arranged relative to the treadmill and at least two winding structures arranged on the rotating shaft, the winding structures being sequentially arranged along the axial direction of the rotating shaft, the winding structures comprising at least a first winding structure used for matching the sensor detection and a second winding structure used for winding the safety belt, the safety belt driving the rotating shaft and the first winding structure to rotate when the safety belt is separated from the second winding structure, and the sensor acquiring the separation information of the safety belt by detecting the first winding structure. The application provides the conversion device applied to the treadmill, so as to solve the technical problem that the existing sensor of the treadmill cannot accurately detect the actual movement state of a user under the limitation of the safety belt.

Description

Technical Field

[0001] This application belongs to the field of training equipment technology, specifically relating to a treadmill. Background Technology

[0002] With increasing health awareness, treadmills, as a convenient training tool, are widely used in homes and training facilities, providing exercise options for people in different physical conditions. For those who are relatively healthy and have good athletic ability, treadmills can meet their daily running needs, allowing them to achieve goals such as aerobic training and improving cardiopulmonary function by adjusting parameters such as speed and incline. However, considering that some people with weaker constitutions or those in the recovery phase of their physical function may face certain risks by relying solely on their balance and control on a treadmill, potentially leading to falls or loss of control over their exercise rhythm, treadmills are equipped with safety belts to ensure the safety of this group. One end of the safety belt is fixed to the treadmill, and the other end is connected to the user. When the user moves to the edge of the track or is about to lose their balance for any reason, the safety belt can promptly limit their range of motion, providing necessary protection and allowing them to exercise or undergo rehabilitation training under relatively safe conditions.

[0003] However, traditional treadmills typically have sensors, usually located at the front, to detect the user's distance from the sensor. This allows for alerts or emergency braking if the user gets too close to the front, preventing collisions. When treadmills are equipped with seat belts, the restriction on the user's movement means that even if the user slips or falls, the distance to the sensor may not change significantly, and the sensor may not be able to detect the fall in time. This makes it difficult to effectively monitor the user's condition in emergencies. The existing sensor placement and setup cannot accurately detect the user's actual movement under the restriction of the seat belt, rendering the sensors ineffective on treadmills with seat belts. Summary of the Invention

[0004] This application provides a conversion device for treadmills to solve the technical problem that existing treadmill sensors cannot accurately detect the actual movement of users under the restriction of safety belts.

[0005] The primary objective of this application is to provide a conversion device for use in treadmills, and the technical solution adopted is as follows:

[0006] A conversion device for a treadmill, the treadmill including a safety belt and a sensor, the conversion device including a rotating shaft rotatably disposed relative to the treadmill and at least two winding structures disposed on the rotating shaft, the multiple winding structures being arranged sequentially along the axial direction of the rotating shaft, the multiple winding structures including at least a first winding structure for cooperating with sensor detection and a second winding structure for winding the safety belt, the safety belt disengaging from the second winding structure causing the rotating shaft and the first winding structure to rotate, the sensor obtaining the disengagement information of the safety belt by detecting the first winding structure.

[0007] The conversion device for a treadmill, as described in the first objective of this application, further includes the following additional technical features:

[0008] The sensor includes an lead-out cable and a winding member for winding the lead-out cable. A first winding structure is connected to the lead-out cable. The safety belt disengages from the second winding structure, causing the shaft to rotate so that the first winding structure winds the lead-out cable.

[0009] The winding structure includes two limiting plates arranged opposite each other along the axis of the rotating shaft and multiple winding components connecting the two limiting plates. The winding components wind the safety belt and the lead-out rope. The multiple winding components are distributed in a single-layer regular polygon around the axis of the rotating shaft. The winding components are detachably set on the two limiting plates.

[0010] The winding extends along the axis of the rotating shaft. The limiting plate has multiple positioning holes and mounting holes that mate with the rotating shaft. The multiple positioning holes are distributed in multiple layers of regular polygons around the axis of the rotating shaft. Along the axis of the rotating shaft, one end of the winding mate mates with the positioning hole of the front limiting plate, and the other end mates with the positioning hole of the rear limiting plate.

[0011] The winding component is fitted with the positioning hole with a clearance. The winding structure is also equipped with a fixing component and a locking component. The fixing component includes a limiting section and a connecting section. The connecting section passes through the positioning holes of the two limiting plates and connects with the locking component. The limiting section is used to abut against the limiting plates.

[0012] The first winding structure is located on one side of the second winding structure. The winding structure includes a limiting plate and multiple winding elements. The multiple winding elements are distributed in a single-layer regular polygon around the axis of the rotating shaft. The first winding structure includes two limiting plates, namely the first limiting plate and the second limiting plate. The second winding structure includes one limiting plate, namely the third limiting plate. The first limiting plate, the second limiting plate, and the third limiting plate are arranged sequentially along the axis of the rotating shaft. The winding elements extend along the axis of the rotating shaft. One end of the winding element of the second winding structure is connected to the third limiting plate, and the other end is connected to the second limiting plate. One end of the winding element of the first winding structure is connected to the first limiting plate, and the other end is connected to the second limiting plate.

[0013] The perpendicular distance between the axis of the winding element of the first winding structure and the axis of the rotating shaft is L1, and the perpendicular distance between the axis of the winding element of the second winding structure and the axis of the rotating shaft is L2, where L1≤L2. The multiple winding elements of the second winding structure are staggered with the multiple winding elements of the first winding structure.

[0014] The winding structure includes two limiting plates arranged opposite each other along the axis of the rotating shaft and multiple winding components connecting the two limiting plates. The limiting plates are provided with multiple positioning holes and mounting holes that cooperate with the rotating shaft. At least one of the multiple positioning holes provided in a limiting plate is provided with an internal thread, and at least one winding component is threadedly connected to the positioning hole.

[0015] The conversion device also includes mounting structures at both ends of the rotating shaft. The rotating shaft is rotatably mounted on the mounting structure, and the mounting structure is fixed in the mounting position. The mounting structure is also provided with a reset component, which is connected to the rotating shaft. When the safety belt is disengaged from the second winding structure, the rotating shaft rotates, causing the reset component to deform. The reset component resets, causing the rotating shaft to rotate so that the second winding structure can wind up the safety belt.

[0016] The second objective of this application is to provide a treadmill that utilizes the conversion device described in the first objective, and the technical solution adopted is as follows:

[0017] The treadmill includes a base and an upright column set on the base. The treadmill also includes a running track. The upright column is located in front of the running track. A receiving compartment is provided on the side of the upright column away from the running track. A conversion device is set in the receiving compartment. A sensor is set below the conversion device. A safety belt outlet is provided on the side of the upright column facing the running track. The safety belt extends at least partially out of the safety belt outlet.

[0018] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0019] 1. This application involves setting a rotating shaft and at least two winding structures mounted on the rotating shaft. The rotating shaft provides the installation position and reliable support for the winding structures. Multiple winding structures can rotate synchronously with the rotating shaft. By setting a second winding structure to wind the safety belt, and the first winding structure being used for sensor detection, the rotating shaft synchronizes the movement stroke of the second winding structure to the first winding structure, enabling the first winding structure to provide timely and accurate feedback on the working status of the second winding structure. This ensures a high degree of fit between the first and second winding structures. The first winding structure is detected by a sensor and is specifically designed to cooperate with the sensor to improve the sensor's detection accuracy. In one embodiment, the sensor can obtain the motion state of the first winding structure in real time, intuitively, and accurately, and then obtain the length and speed information of the safety belt detached from the second winding structure, thereby accurately mapping the user's position movement and instantaneous changes in motion state on the treadmill.

[0020] 2. As a preferred embodiment of this application, by connecting the lead-out cable to the first winding structure, the rotation of the second winding structure will drive the first winding structure to wind the lead-out cable. The lead-out cable corresponds to the length of the seat belt, enabling the sensor to collect the motion information of the first winding structure more timely and accurately, and thus intuitively provide feedback on the information of the second winding structure. By setting up a take-up component, on the one hand, the take-up component winds up the lead-out cable, keeping the lead-out cable and the first winding structure in a taut state, allowing it to be wound up by the first winding structure more timely, improving the response speed. At the same time, it allows the lead-out cable to be wound orderly around the first winding structure, making the first winding structure wind the lead-out cable more smoothly. On the other hand, by setting up a take-up component to wind up the lead-out cable, the lead-out cable drives the first winding structure to rotate, thereby realizing the second winding structure winding the seat belt, achieving automatic retraction of the seat belt. Moreover, it allows the seat belt to be in a stressed state during use, preventing the seat belt from loosening, reducing the swing amplitude of the seat belt 15, and realizing dynamic adjustment of the seat belt.

[0021] 3. In a preferred embodiment of this application, by arranging multiple winding components in a single-layer regular polygonal pattern around the axis of rotation, the safety belt and lead-out cable can be guided and straightened from multiple angles during winding and unwinding, effectively reducing the probability of twisting and entanglement, and avoiding localized wear and strength reduction caused by twisting and entanglement. Simultaneously, the winding process of the first and second winding structures is made smoother, and the multiple winding components effectively reduce the overall weight of the winding structure, facilitating the winding of the lead-out cable by the sensor winding component. By detachably mounting the winding components on the two limiting plates, the installation and disassembly of the winding structure are facilitated, improving subsequent maintenance efficiency. In one embodiment, different diameter winding components can be used to accommodate safety belts or lead-out cables of different lengths, improving the applicability of the winding structure. Moreover, the limiting plates effectively prevent the safety belt or lead-out cable from detaching from the winding area during winding, ensuring that the safety belt or lead-out cable is wound and unwound in an orderly manner, improving the smoothness of the conversion device operation.

[0022] 4. In a preferred embodiment of this application, by providing positioning holes, one end of the winding component mates with the positioning hole of the front limiting plate, and the other end mates with the positioning hole of the rear limiting plate. The positioning holes provide precise positioning for the winding component and also assist in its installation, improving the installation accuracy. By setting multiple positioning holes in a multi-layered regular polygonal distribution around the axis of rotation, the installation position of the winding component is adjustable. On the one hand, this further improves the practicality of the winding structure, allowing for the smooth winding of seat belts or lead-out cables of different lengths without replacement. On the other hand, it reduces the length requirement of the lead-out cable, enabling it to adapt to seat belts of different lengths and improving the versatility of the conversion device.

[0023] 5. As a preferred embodiment of this application, by setting a clearance fit between the winding component and the positioning hole, the difficulty of installing, disassembling, and maintaining the winding component is reduced, and the replacement and installation of the winding component is facilitated. By setting a fixing component and a locking component, the fixing component includes a limiting section and a connecting section. The connecting section passes through the positioning holes of the two limiting plates and connects to the locking component. The limiting section is used to abut against the limiting plates. The fixing component and the locking component make the fit between the winding component and the positioning hole more stable, improve the load-bearing capacity of the winding component, and improve the stability of the winding component when winding the safety belt or when the safety belt leaves the second winding structure.

[0024] 6. As a preferred embodiment of this application, by setting one end of the winding member of the second winding structure to be connected to the third limiting plate and the other end to the second limiting plate, the setting of the second winding structure is simplified, the weight of the second winding structure and the first winding structure is reduced, and the space occupied by the second winding structure is effectively reduced, thereby improving the space utilization rate.

[0025] Furthermore, when the seat belt is longer than the lead-out cable, by setting L1≤L2, the lead-out cable can detect the entire seat belt, reducing the requirements on the sensor and allowing the sensor to be used with seat belts of different lengths, thus improving the applicability of the conversion device. By setting the multiple winding components of the second winding structure to be staggered with the multiple winding components of the first winding structure, the stability of the system is further enhanced, avoiding vibration or shaking caused by the second limiting plate being subjected to concentrated force at the same position, and ensuring the stability of the first and second winding structures during operation.

[0026] 7. In a preferred embodiment of this application, at least one positioning hole is provided with an internal thread, and at least one winding component is threadedly connected to the positioning hole. The winding component is used to connect and fix the winding component to the limiting plate, thereby improving the connection strength between the winding component and the limiting plate and enhancing the stability and reliability of the winding structure. It also facilitates the replacement of the winding component, reducing subsequent maintenance costs and difficulties.

[0027] 8. As a preferred embodiment of this application, by setting a reset member, the reset member drives the rotating shaft to rotate, causing the second winding structure to wind up the safety belt, thereby realizing the winding up of the safety belt. On the one hand, this helps to ensure that the safety belt is under force when it is in working condition, preventing the safety belt from drooping and swinging, and ensuring that the safety belt is in a taut state, allowing for timely dynamic adjustment. On the other hand, it helps to realize automatic winding up of the safety belt when it ends working condition, avoiding manual winding and improving the efficiency of the safety belt returning to its initial winding state.

[0028] 9. This application incorporates a conversion device housed within the column's storage compartment. This compartment protects the conversion device from external impacts, dust, or other debris, extending its lifespan and ensuring stable operation. Placing the sensor below the conversion device effectively protects it, reducing the risk of damage from external factors and ensuring accurate and reliable monitoring of the safety belt's status. This provides users with more reliable information. The sensor placement below the conversion device further optimizes treadmill space utilization, allowing for the orderly arrangement of different functional components within the limited column space, effectively improving the overall space utilization of the treadmill structure. Furthermore, the safety belt outlet is located on the column side facing the running track, with part of the safety belt extending beyond the outlet, ensuring the safety belt's extension direction directly faces the user. This facilitates quick and easy harness donning, enhancing usability and reducing the risk of entanglement due to improper safety belt placement, further improving the smoothness of use. The centralized placement of the conversion device and sensor within the column's storage compartment allows maintenance personnel easy access to these components during later repairs, significantly improving operation and maintenance convenience. Attached Figure Description

[0029] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0030] Figure 1 This is a front view of the conversion device according to one embodiment of this application;

[0031] Figure 2 This is a top view of a conversion device according to one embodiment of this application;

[0032] Figure 3 This is a left view of a conversion device according to one embodiment of this application;

[0033] Figure 4 This is a front view of a treadmill according to one embodiment of this application;

[0034] Figure 5 This is a rear view of a treadmill according to one embodiment of this application;

[0035] Figure 6 for Figure 5 Enlarged view of part A in the middle;

[0036] Figure 7 This is a front view of a seat belt according to one embodiment of this application;

[0037] Figure 8This is a top view of a seat belt according to one embodiment of this application.

[0038] Figure label:

[0039] 1. Treadmill; 11. Sensor; 111. Lead-out cable; 12. Base; 13. Upright column; 131. Storage compartment; 132. Seat belt exit; 14. Running track; 15. Seat belt; 151. Starting section; 152. Extension section; 153. Close-fitting section; 154. Limiting component;

[0040] 2. Conversion device;

[0041] 3. Shaft;

[0042] 4. Winding structure; 41. First winding structure; 42. Second winding structure; 43. Limiting plate; 431. Positioning hole; 432. Mounting hole; 433. First limiting plate; 434. Second limiting plate; 435. Third limiting plate; 44. Winding component; 45. Fixing component; 451. Limiting section; 452. Connecting section; 46. Locking component;

[0043] 5. Installation structure. Detailed Implementation

[0044] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0045] Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below. It should be noted that, unless otherwise specified, the embodiments of this application and the features thereof can be combined with each other.

[0046] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 As shown, a conversion device 2 is applied to a treadmill 1. The treadmill 1 includes a safety belt 15 and a sensor 11. The conversion device 2 includes a rotating shaft 3 rotatably disposed relative to the treadmill 1 and at least two winding structures 4 disposed on the rotating shaft 3. The multiple winding structures 4 are arranged sequentially along the axial direction of the rotating shaft 3. The multiple winding structures 4 include at least a first winding structure 41 for cooperating with the sensor 11 for detection and a second winding structure 42 for winding the safety belt 15. The safety belt 15 disengages from the second winding structure 42, causing the rotating shaft 3 and the first winding structure 41 to rotate. The sensor 11 obtains the disengagement information of the safety belt 15 by detecting the first winding structure 41.

[0047] This application sets up a rotating shaft 3 and at least two winding structures 4 set on the rotating shaft 3. The rotating shaft 3 provides an installation position and reliable support for the winding structures 4. Multiple winding structures 4 can rotate synchronously with the rotating shaft 3. By setting a second winding structure 42 to wind the safety belt 15, and a first winding structure 41 for sensor 11 detection, the rotating shaft 3 synchronizes the movement stroke of the second winding structure 42 to the first winding structure 41, so that the first winding structure 41 can timely and accurately feedback the working status of the second winding structure 42, ensuring a high degree of fit between the first winding structure 41 and the second winding structure 42. The sensor 11 detects the first winding structure 41, and the first winding structure 41 is dedicated to cooperating with the sensor 11 to improve the detection accuracy of the sensor 11. In one embodiment, the sensor 11 can obtain the movement status of the first winding structure 41 in real time, intuitively and accurately, and then obtain the length information and speed information of the safety belt 15 detached from the second winding structure 42, thereby accurately mapping the user's position movement and instantaneous change in movement status on the treadmill 1.

[0048] Those skilled in the art will understand that the release information may be length information and / or release rate information of the seat belt 15, etc. The multiple winding structures 4 may also include a third winding structure for synchronously winding cables, or a fourth winding structure for connecting damping blocks to prevent the seat belt from coming off due to inertia, etc.

[0049] In this application, the retraction mechanism of the seat belt 15 can be any of the following embodiments:

[0050] Implementation method one: such as Figure 1 , Figure 5 , Figure 6 , Figure 7 , Figure 8 As shown, the sensor 11 includes an lead-out cable 111 and a winding member (not shown in the figure) for winding the lead-out cable 111. The first winding structure 41 is connected to the lead-out cable 111. The safety belt 15 disengages from the second winding structure 42 and drives the rotating shaft 3 to rotate so that the first winding structure 41 winds the lead-out cable 111.

[0051] By connecting the lead-out cable 111 to the first winding structure 41, the rotation of the second winding structure 42 will cause the first winding structure 41 to wind the lead-out cable 111. The lead-out cable 111 corresponds to the length of the safety belt 15, enabling the sensor 11 to collect the motion information of the first winding structure 41 more timely and accurately, and thus intuitively provide feedback on the information of the second winding structure 42. By setting up a retractor, on the one hand, the retractor winds up the lead-out cable 111, keeping the lead-out cable 111 taut with the first winding structure 41, allowing it to be wound by the first winding structure 41 more promptly and improving the response speed. At the same time, it allows the lead-out cable 111 to be wound around the first winding structure 41 in an orderly manner, making the first winding structure 41 wind the lead-out cable 111 more smoothly. On the other hand, by setting up a retractor to wind up the lead-out cable 111, the lead-out cable 111 drives the first winding structure 41 to rotate, thereby enabling the second winding structure 42 to wind the seat belt 15, realizing the automatic retraction of the seat belt 15. Moreover, it allows the seat belt 15 to be in a stressed state during use, preventing the seat belt 15 from slack, reducing the swing amplitude of the seat belt 15, and realizing the dynamic adjustment of the seat belt 15.

[0052] Implementation Method Two: (e.g.) Figure 1 , Figure 5 , Figure 6 , Figure 7 , Figure 8 As shown, the conversion device 2 also includes mounting structures 5 disposed at both ends of the rotating shaft 3. The rotating shaft 3 is rotatably disposed on the mounting structures 5, and the mounting structures 5 are fixed in the installation position. The mounting structures 5 are also provided with a reset member (not shown in the figure). The reset member is connected to the rotating shaft 3. When the seat belt 15 disengages from the second winding structure 42, the rotating shaft 3 rotates, causing the reset member to deform. The reset member resets, causing the rotating shaft 3 to rotate so that the second winding structure 42 winds up the seat belt 15. Furthermore, in embodiment two, the sensor 11 can be the same as the sensor 11 in embodiment one, or an infrared sensor 11 can be provided. By setting the receiving plate of the first winding structure 41, the disengagement length of the seat belt 15 can be obtained by counting the number of rotations of the first winding structure 41. By setting a reset component, the reset component drives the rotating shaft 3 to rotate, causing the second winding structure 42 to wind up the safety belt 15, thereby realizing the winding up of the safety belt 15. On the one hand, this helps to ensure that the safety belt 15 is under force when it is in operation, preventing the safety belt 15 from drooping and swinging, and keeping the safety belt 15 in a taut state for timely dynamic adjustment. On the other hand, it helps to realize the automatic winding up of the safety belt 15 when it ends its working state, avoiding manual winding and improving the efficiency of the safety belt 16 in restoring its initial winding state.

[0053] Those skilled in the art will understand that the reset member can be connected to the rotating shaft 3, or to the second winding structure 42 or the first winding structure 41; this application does not limit this connection. Furthermore, in Embodiment 1, the location of the sensor 11 is not limited; it can be located below, below, to the left, to the right, below the side, or above the side of the first winding structure 41.

[0054] In implementation method one, the winding structure 4 can be configured in any of the following embodiments:

[0055] Example 1: As Figure 1 , Figure 2 , Figure 3 As shown, the winding structure 4 includes two limiting plates 43 arranged opposite each other along the axis of the rotating shaft 3, and multiple winding members 44 connecting the two limiting plates 43. The winding members 44 wind the safety belt 15 and the lead-out cable 111. The multiple winding members 44 are distributed in a single-layer regular polygon around the axis of the rotating shaft 3. The winding members 44 are detachably mounted on the two limiting plates 43. By setting the multiple winding members to be distributed in a single-layer regular polygon around the axis of the rotating shaft 3, the safety belt 15 and the lead-out cable 111 can be guided and combed at multiple angles during winding and unwinding, effectively reducing the probability of twisting and entanglement of the safety belt 15 and the lead-out cable 111, and avoiding local wear and strength reduction caused by twisting and entanglement. At the same time, it makes the winding process of the first winding structure 41 and the second winding structure 42 smoother. The multiple winding members 44 can effectively reduce the overall weight of the winding structure 4, making it easier for the sensor 11 winding member to wind up the lead-out cable 111. By detachably mounting the winding element 44 onto the two limiting plates 43, the installation and disassembly of the winding structure 4 are facilitated, improving subsequent maintenance efficiency. In one embodiment, the winding element 44 of different diameters can be replaced to accommodate safety belts 15 or lead-out cables 111 of different lengths, improving the applicability of the winding structure 4. Moreover, the limiting plates 43 effectively prevent the safety belt 15 or lead-out cable 111 from detaching from the winding area during the winding process, ensuring that the safety belt 15 or lead-out cable 111 is wound and detached in an orderly manner, improving the smoothness of the operation of the conversion device 2.

[0056] Furthermore, along the axial direction of the rotating shaft 3, the projection of the winding member 44 falls within the projection range of the limiting plate 43. The limiting plate 43 constrains the safety belt 15, preventing it from detaching from the second winding structure 42 during the winding process.

[0057] Example 2: This example 2 is not illustrated. Unlike Example 1, the multiple wound elements are arranged in a single circle around the axis of rotation. Preferably, the limiting plate is a disc structure to achieve high-precision rotation and reduce the offset and sway of the limiting plate's rotation axis.

[0058] Example 3: This example 3 is not shown in the figure. The winding structure is a column with a groove. The groove includes groove walls that are arranged opposite each other along the axis of rotation.

[0059] Example 4: This example 4 is not illustrated. The difference from example 1 is that the two limiting plates and multiple winding parts are integrally formed.

[0060] Example 5: This example 5 is not shown in the figure. The winding part is fixed to the limiting plate by welding.

[0061] In Embodiment 1, the connection method between the winding member 44 and the limiting plate 43 can be any of the following specific examples:

[0062] Specific example 1: if Figure 1 , Figure 2 , Figure 3 As shown, the winding member 44 extends along the axial direction of the rotating shaft 3. The limiting plate 43 is provided with multiple positioning holes 431 and mounting holes 432 that cooperate with the rotating shaft 3. The multiple positioning holes 431 are distributed in multiple layers of regular polygons around the axis of the rotating shaft 3. Along the axial direction of the rotating shaft 3, one end of the winding member 44 cooperates with the positioning hole 431 of the front limiting plate 43, and the other end cooperates with the positioning hole 431 of the rear limiting plate 43.

[0063] By setting positioning holes 431, one end of the winding component 44 engages with the positioning hole 431 of the front limiting plate 43, and the other end engages with the positioning hole 431 of the rear limiting plate 43. The positioning holes 431 provide precise positioning for the winding component 44 and also assist in the installation of the winding component, improving the installation accuracy of the winding component 44. By setting multiple positioning holes 431 in a multi-layered regular polygonal distribution around the axis of the rotating shaft 3, the installation position of the winding component 44 can be adjusted. On the one hand, this further improves the practicality of the winding structure 4, allowing the winding structure 4 to smoothly wind different lengths of safety belts 15 or lead-out cables 111 without replacement. On the other hand, it reduces the length requirement of the lead-out cable 111, enabling the lead-out cable 111 to adapt to different lengths of safety belts 15, thus improving the versatility of the conversion device 2.

[0064] Specific Example 2: This specific example 2 is not illustrated. The winding part extends along the axis of the rotating shaft. The limiting plate is provided with multiple positioning protrusions and mounting holes that cooperate with the rotating shaft. The multiple positioning protrusions are distributed in multiple layers around the axis of the rotating shaft. Along the axis of the rotating shaft, both ends of the winding part are provided with mating holes that cooperate with the positioning protrusions. One end of the winding part cooperates with the positioning hole of the front limiting plate, and the other end cooperates with the positioning hole of the rear limiting plate.

[0065] In specific example 1, the mating method between the wound part and the positioning hole can be any of the following examples:

[0066] In specific example 1, the engagement method between the winding member 44 and the positioning hole 431 can be any of the following examples:

[0067] Example 1: such as Figure 1 , Figure 2 , Figure 3 As shown, the winding member 44 is clearance-fitted with the positioning hole 431. Furthermore, the winding structure 4 is also provided with a fixing member 45 and a locking member 46. The fixing member 45 includes a limiting section 451 and a connecting section 452. The connecting section 452 passes through the positioning holes 431 of the two limiting plates 43 and connects to the locking member 46. The limiting section 451 is used to abut against the limiting plate 43. By setting a clearance fit between the winding component 44 and the positioning hole 431, the difficulty of installing, disassembling, and maintaining the winding component 44 is reduced, making it easier to replace and install the winding component 44. By setting a fixing component 45 and a locking component 46, the fixing component 45 includes a limiting section 451 and a connecting section 452. The connecting section 452 passes through the positioning holes 431 of the two limiting plates 43 and connects to the locking component 46. The limiting section 451 is used to abut against the limiting plates 43. The fixing component 45 and the locking component 46 make the fit between the winding component 44 and the positioning hole 431 more stable, improve the load-bearing capacity of the winding component 44, and improve the stability of the winding component 44 when winding the safety belt 15 or when the safety belt 15 leaves the second winding structure 42.

[0068] Those skilled in the art will understand that the connection method between the connecting segment 452 and the locking member 46 is not limited in this application. It can be a threaded connection between the connecting segment 452 and the locking member 46, or a snap-fit ​​connection between the connecting segment 452 and the locking member 46, etc.

[0069] In Example 1, the winding can be set up in any of the following ways:

[0070] Example 1: Figure 1 , Figure 2 , Figure 3 As shown, the winding member 44 includes a mating section (not shown in the figure) that is clearance-fitted with the positioning hole 431 and a support section (not shown in the figure) that connects the mating section. The diameter of the mating section is smaller than the diameter of the support section, and the support section abuts against the limiting plate 43.

[0071] Example 2: This example 2 is not illustrated. The positioning hole is a blind hole and can abut against the wound part.

[0072] Example 2: This example 2 is not illustrated. The positioning hole has an internal thread, and the two ends of the winding part have external threads. The winding part is threadedly connected to the positioning hole.

[0073] Example 3: This example 3 is not illustrated. The wound part and the positioning hole are interference fit.

[0074] In embodiment one, the first winding structure 41 and the second winding structure 42 can be configured in any of the following embodiments:

[0075] Example 6: As Figure 1 , Figure 2 , Figure 3 As shown, the first winding structure 41 is located on one side of the second winding structure 42. The winding structure 4 includes a limiting plate 43 and multiple winding elements 44. The multiple winding elements 44 are distributed in a single-layer regular polygon around the axis of the rotating shaft 3. The first winding structure 41 includes two limiting plates 43, namely the first limiting plate 433 and the second limiting plate 434. The second winding structure 42 includes one limiting plate 43, which is the third limiting plate 435. The first limiting plate 433, the second limiting plate 434, and the third limiting plate 435 are arranged sequentially along the axis of the rotating shaft 3. The winding elements 44 extend along the axial direction of the rotating shaft 3. One end of the winding element 44 of the second winding structure 42 is connected to the third limiting plate 435, and the other end is connected to the second limiting plate 434. One end of the winding element 44 of the first winding structure 41 is connected to the first limiting plate 433, and the other end is connected to the second limiting plate 434. By setting one end of the winding member 44 of the second winding structure 42 to be connected to the third limiting plate 435 and the other end to the second limiting plate 434, the setting of the second winding structure 42 is simplified, the weight of the second winding structure 42 and the first winding structure 41 is reduced, and the space occupied by the second winding structure 42 is effectively reduced, thereby improving the space utilization rate.

[0076] Example 7: This example 7 is not shown in the figure. The first winding structure and the second winding structure are set at intervals.

[0077] Example 8: This example 8 is not illustrated. Unlike Example 6, the multiple winding elements are arranged in a single circular array around the axis of rotation. Further, the multiple winding elements of the first winding structure are arranged in a circle with radius R1 around the axis of rotation, and the multiple winding elements of the second winding structure are arranged in a circle with radius R2 around the axis of rotation, where R2 ≥ R1. The multiple winding elements of the second winding structure are staggered with those of the first winding structure. Those skilled in the art will understand that when R2 = R1, two limiting plates can be provided extending along the axial direction of the axis of rotation, and the multiple winding elements of the second winding structure and the multiple winding elements of the first winding structure are arranged opposite each other along the axial direction of the axis of rotation. Further, the diameter of the winding elements of the first winding structure is smaller than the diameter of the winding elements of the second winding structure.

[0078] In embodiment 6, the winding member 44 of the first winding structure 41 and the winding member 44 of the second winding structure 42 can be arranged in any of the following specific examples:

[0079] Specific example 3: if Figure 1 , Figure 2 , Figure 3As shown, the perpendicular distance between the axis of the winding element 44 of the first winding structure 41 and the axis of the rotating shaft 3 is L1, and the perpendicular distance between the axis of the winding element 44 of the second winding structure 42 and the axis of the rotating shaft 3 is L2, where L1 ≤ L2. The multiple winding elements 44 of the second winding structure 42 are staggered with the multiple winding elements 44 of the first winding structure 41. When the safety belt 15 is longer than the lead-out cable 111, by setting L1 ≤ L2, the lead-out cable 111 can detect the entire safety belt 15, reducing the requirements on the sensor 11 and enabling the sensor 11 to be applicable to safety belts 15 of different lengths, thus improving the applicability of the conversion device 2. By setting the multiple winding elements 44 of the second winding structure 42 to be staggered with the multiple winding elements 44 of the first winding structure 41, the stability of the system is further enhanced, avoiding vibration or shaking caused by concentrated force on the second limiting plate 434 at the same position, and ensuring the stability of the first winding structure 41 and the second winding structure 42 during operation.

[0080] Specific Example 4: This specific example 4 is not illustrated. The difference from specific example 3 is that the winding elements of the second winding structure and the winding elements of the first winding structure are arranged sequentially along the radial direction of the rotating shaft.

[0081] As a preferred embodiment 9 of the implementation method: This embodiment 9 is not shown. The winding structure includes two limiting plates arranged opposite to each other along the axial direction of the rotating shaft and a plurality of winding members connecting the two limiting plates. The limiting plates are provided with a plurality of positioning holes and mounting holes that cooperate with the rotating shaft. At least one of the positioning holes provided in one of the limiting plates is provided with an internal thread, and at least one winding member is threadedly connected to the positioning hole.

[0082] By providing at least one positioning hole 431 with an internal thread, and at least one winding component 44 threadedly connected to the positioning hole 431, the winding component 44 is fixedly connected to the limiting plate 43, thereby improving the connection strength between the winding component 44 and the limiting plate 43 and enhancing the stability and reliability of the winding structure 4. This also facilitates the replacement of the winding component 44, reducing later maintenance costs and difficulties.

[0083] This application also discloses a treadmill 1, utilizing a conversion device 2 as disclosed in this application, such as... Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8As shown, the treadmill 1 includes a base 12 and a column 13 disposed on the base 12. The treadmill 1 also includes a running track 14. The column 13 is located in front of the running track 14. A receiving compartment 131 is provided on the side of the column 13 away from the running track 14. A conversion device 2 is disposed in the receiving compartment 131. A sensor 11 is disposed below the conversion device 2. A safety belt outlet 132 is provided on the side of the column 13 facing the running track 14. The safety belt 15 extends at least partially out of the safety belt outlet 132.

[0084] This application places the conversion device 2 within the housing 131 of the column 13. The housing 131 protects the conversion device 2 within the column 13, reducing the possibility of it being affected by external impacts, dust, or other debris, extending its service life, and ensuring stable operation. By placing the sensor 11 below the conversion device 2, the sensor 11 is effectively protected, reducing the risk of damage due to external factors. This ensures the accuracy and reliability of monitoring the status of the safety belt 15, providing users with more reliable information. The placement of the sensor 11 below the conversion device 2 further optimizes the space utilization of the treadmill, allowing for the orderly arrangement of different functional components within the limited space of the column 13, effectively improving the overall space utilization of the treadmill 1. Furthermore, the safety belt outlet 132 is located on the side of the column 13 facing the running track 14, with part of the safety belt 15 extending out of the outlet 132. This ensures the safety belt 15 extends directly towards the user, facilitating quick and easy donning of the safety belt 15, improving usability, and reducing the risk of entanglement due to improper placement of the safety belt 15, further enhancing the smoothness of the user experience. The conversion device 2 and the sensor 11 are centrally located in the housing 131 of the column 13, allowing maintenance personnel to easily access these components during later maintenance and repair, greatly improving the convenience of operation and maintenance.

[0085] As a preferred embodiment of the treadmill 1 disclosed in this application, such as Figure 1 , Figure 2 , Figure 5 , Figure 6 As shown, the conversion device 2 is arranged opposite to the seat belt outlet 132. The conversion device 2 includes a rotating shaft 3 that is rotatably arranged relative to the treadmill 1 and at least two winding structures 4 arranged on the rotating shaft 3. The winding structure 4 includes two limiting plates 43 arranged opposite to each other along the axial direction of the rotating shaft 3 and a plurality of winding parts 44 connecting the two limiting plates 43. The axis of the rotating shaft 3 is horizontal and faces the center position of the seat belt outlet 132.

[0086] By setting the conversion device 2 opposite to the seat belt outlet 132, the angle at which the seat belt 15 extends from the seat belt outlet 132 is optimized, improving the smoothness of dynamic adjustment of the seat belt 15 during use. By setting the axis of the rotating shaft 3 horizontally toward the center of the seat belt outlet 132, it is ensured that the seat belt 15 accurately enters and exits during winding and release, avoiding twisting or jamming of the seat belt 15 due to positional deviation, and improving the smoothness and reliability of the seat belt 15 in use.

[0087] As a preferred embodiment of the treadmill 1 disclosed in this application, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 As shown, the safety belt 15 includes a close-fitting section 153 for connection with the user, a starting section 151 connected to the second winding structure 42, and an extension section 152 connecting the close-fitting section 153 and the starting section 151. The safety belt 15 also includes a limiting member 154 disposed at one end of the extension section 152 near the close-fitting section 153, the limiting member 154 being used to abut against the upright 13. Furthermore, the length of the safety belt 15 is less than the horizontal distance from the end of the runway 14 to the connection position of the starting section 151 and the winding structure 4.

[0088] By setting a limiting member 154, which abuts against the upright 13, the body-hugging section 153 is positioned outside the seat belt exit 132, facilitating user operation of the body-hugging section 153. Because the limiting member 154 abuts against the upright 13, the body-hugging section 153 can be in a relaxed state, allowing the user to better wear it and optimizing the user experience. By setting the length of the safety belt 15 to be less than the horizontal distance from the end of the track 14 to the connection point between the starting section 151 and the second winding structure 42, the safety belt 15 can serve as a limiting reminder. Before the user reaches the end of the track 14, the safety belt 15 applies force to the user through the body-hugging section 153 to remind the user that the current position is close to the end of the track 14 and that the user needs to adjust their position or stop running. On the other hand, the safety belt 15 will not cause excessive swaying and interference with the user's movement during normal running, and it can accurately limit the user's position when the user approaches the end of the track 14, so that the safety belt 15 is precisely adapted to the user's range of motion, providing effective restraint at critical moments and ensuring the user's safety.

[0089] This application also discloses a speed adjustment method for a treadmill, applicable to a treadmill disclosed in this application, the control method including,

[0090] The sensor acquires information about the seatbelt detaching from the second winding structure.

[0091] The location and status information of the user are determined based on the disconnection information;

[0092] Adjust the treadmill speed based on location and status information;

[0093] The information obtained by sensors regarding the seatbelt's detachment from the second winding structure includes:

[0094] Obtain the length information of the seat belt detached from the second winding structure;

[0095] Obtain information on the rate at which the seatbelt detaches from the second winding structure;

[0096] The location and status information of the user determined based on the disconnection information includes:

[0097] Establish a correspondence between length information and the location information of users on the runway;

[0098] The location of the user on the runway is determined based on the length information obtained by the sensor.

[0099] Location information includes the front section of the runway, the middle section of the runway, and the rear section of the runway;

[0100] Acquire information on the standard rate range at which the seatbelt disengages from the second winding structure during normal user training;

[0101] Based on the comparison between the rate information acquired by the sensor and the standard rate range information, the user's status information is determined, including:

[0102] Status information includes: abnormal, normal;

[0103] The rate information is not within the standard rate range, indicating that the user is in an abnormal state.

[0104] If the speed information is within the standard speed range, it can be determined that the user is in a normal state.

[0105] Adjusting the treadmill speed based on location and status information includes:

[0106] If the user's status information is abnormal, reduce the treadmill speed or brake the treadmill.

[0107] If the user's status is normal, increase the treadmill speed if the user is at the front of the track; maintain the treadmill speed if the user is in the middle of the track; and decrease the treadmill speed if the user is at the back of the track.

[0108] The method disclosed in this application determines the user's status information by detaching from the information, and more accurately determines the user's status based on length information and speed information, thereby improving the timeliness and accuracy of treadmill speed adjustment and optimizing the user experience.

[0109] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0110] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0111] The above description is merely an embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this application should be included within the scope of the claims of this application.

Claims

1. A conversion device for use in a treadmill, characterized in that, The treadmill includes a safety belt and a sensor. The conversion device includes a rotating shaft rotatably disposed relative to the treadmill and at least two winding structures disposed on the rotating shaft. The multiple winding structures are arranged sequentially along the axial direction of the rotating shaft. The multiple winding structures include at least a first winding structure for cooperating with the sensor detection and a second winding structure for winding the safety belt. The safety belt disengages from the second winding structure, causing the rotating shaft and the first winding structure to rotate. The sensor obtains the disengagement information of the safety belt by detecting the first winding structure. The safety belt is worn by the user, and the sensor is used to obtain the length information of the safety belt after it is detached from the second winding structure, so as to determine the position information of the user on the treadmill track; The treadmill also includes a column located in front of the running track. The outlet of the safety belt is located on the side of the column facing the running track. The safety belt includes a starting section connected to the second winding structure. The length of the safety belt is less than the horizontal distance from the end of the running track to the position where the starting section is connected to the second winding structure.

2. The conversion device for a treadmill according to claim 1, characterized in that, The sensor includes an outgoing cable and a winding member for winding the outgoing cable. The first winding structure is connected to the outgoing cable. The seat belt disengages from the second winding structure and drives the rotating shaft to rotate, so that the first winding structure winds the outgoing cable.

3. The conversion device for a treadmill according to claim 2, characterized in that, The winding structure includes two limiting plates arranged opposite each other along the axis of the rotating shaft and a plurality of winding members connecting the two limiting plates. The winding members wind the safety belt and the lead-out rope. The plurality of winding members are distributed in a single layer of regular polygons around the axis of the rotating shaft. The winding members are detachably mounted on the two limiting plates.

4. The conversion device for a treadmill according to claim 3, characterized in that, The winding member extends along the axial direction of the rotating shaft. The limiting plate is provided with multiple positioning holes and mounting holes that cooperate with the rotating shaft. The multiple positioning holes are distributed in multiple layers of regular polygons around the axis of the rotating shaft. Along the axial direction of the rotating shaft, one end of the winding member cooperates with the positioning hole of the front limiting plate, and the other end cooperates with the positioning hole of the rear limiting plate.

5. A conversion device for a treadmill according to claim 4, characterized in that, The winding member is clearance-fitted with the positioning hole. The winding structure is also provided with a fixing member and a locking member. The fixing member includes a limiting section and a connecting section. The connecting section passes through the positioning holes of the two limiting plates and connects to the locking member. The limiting section is used to abut against the limiting plates.

6. A conversion device for a treadmill according to claim 2, characterized in that: The first winding structure is located on one side of the second winding structure. The winding structure includes a limiting plate and multiple winding elements. The multiple winding elements are distributed in a single-layer regular polygon around the axis of the rotating shaft. The first winding structure includes two limiting plates, namely a first limiting plate and a second limiting plate. The second winding structure includes one limiting plate, namely a third limiting plate. The first limiting plate, the second limiting plate, and the third limiting plate are arranged sequentially along the axis of the rotating shaft. The winding elements extend along the axis of the rotating shaft. One end of the winding element of the second winding structure is connected to the third limiting plate, and the other end is connected to the second limiting plate. One end of the winding element of the first winding structure is connected to the first limiting plate, and the other end is connected to the second limiting plate.

7. A conversion device for a treadmill according to claim 6, characterized in that: The perpendicular distance between the axis of the winding element of the first winding structure and the axis of the rotating shaft is L1, and the perpendicular distance between the axis of the winding element of the second winding structure and the axis of the rotating shaft is L2, where L1≤L2. The plurality of winding elements of the second winding structure are staggered with the plurality of winding elements of the first winding structure.

8. A conversion device for a treadmill according to claim 2, characterized in that, The winding structure includes two limiting plates arranged opposite each other along the axial direction of the rotating shaft and a plurality of winding members connecting the two limiting plates. The limiting plates are provided with a plurality of positioning holes and mounting holes that cooperate with the rotating shaft. At least one of the positioning holes in one of the limiting plates is provided with an internal thread, and at least one winding member is threadedly connected to the positioning hole.

9. A conversion device for a treadmill according to claim 1, characterized in that, The conversion device further includes mounting structures disposed at both ends of the rotating shaft. The rotating shaft is rotatably disposed on the mounting structure. The mounting structure is fixed in the installation position. The mounting structure is also provided with a reset member. The reset member is connected to the rotating shaft. When the safety belt is disengaged from the second winding structure, the rotating shaft rotates, causing the reset member to deform. The reset member resets, causing the rotating shaft to rotate so that the second winding structure winds up the safety belt.

10. A treadmill, comprising the conversion device as described in claim 1, characterized in that, The treadmill includes a base and a column disposed on the base. The treadmill also includes a running track. The column is located in front of the running track. A receiving compartment is provided on the side of the column away from the running track. A conversion device is disposed in the receiving compartment. A sensor is disposed below the conversion device. A safety belt outlet is provided on the side of the column facing the running track. The safety belt extends at least partially out of the safety belt outlet.

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