Automatic intelligent heat dissipation device for treadmill motor and treadmill

Abstract

The invention discloses an automatic intelligent heat dissipation device for a treadmill motor and a treadmill, and relates to the technical field of fitness equipment. The device comprises an energy collection and conversion structure, a transmission execution mechanism, a heat dissipation assembly and a delay control structure. The energy collection and conversion structure collects running vibration through an air blowing lever and converts mechanical vibration into air pressure energy through an energy conversion air pump; the transmission executing mechanism converts air pressure energy into linear motion through an air pipeline, an executing air cylinder and a sliding connecting rod. The heat dissipation assembly comprises two heat dissipation protection covers, and alignment or sealing of the heat dissipation protection covers and strip-shaped heat dissipation holes of the motor is achieved through sliding. The delay control structure comprises a front-end air bag and a rear-end air bag, and the heat dissipation opportunity is intelligently adjusted according to the running state of the motor through air pressure balance. The invention further provides a treadmill adopting the heat dissipation device, the treadmill comprises a tension adjusting device, and accurate adjustment of the position of the motor is achieved through the two fixed enclasping pieces, a tightness adjusting structure and a supporting movable structure.

Description

Technical Field

[0001] The present invention relates to the technical field of fitness equipment, and in particular to an automatic intelligent heat dissipation device for a treadmill motor and a treadmill using the device. Background Art

[0002] Treadmills are a common piece of fitness equipment, widely used in homes, gyms, and stadiums. As the core drive component, the motor's heat dissipation performance and service life directly impact the overall performance and user experience of the device. With increasing health awareness and fitness needs, high-performance, stable, and reliable treadmill motor heat dissipation technology is gaining increasing attention.

[0003] At present, there are mainly the following ways to dissipate heat for treadmill motors on the market: First, natural convection cooling. This method is simple in structure and relies primarily on cooling holes or fins on the motor housing to dissipate heat through natural convection. However, this method is inefficient and struggles to meet cooling requirements, especially during high-intensity use. Furthermore, the cooling holes are exposed to the outside world for extended periods, leading to dust accumulation. This not only affects cooling efficiency but can also cause internal motor failures.

[0004] Second, forced air cooling is a heat dissipation method. This involves adding an electric fan to cool the motor. While this method offers high heat dissipation efficiency, it requires additional power to drive the fan, increasing system energy consumption and structural complexity. Furthermore, the fan is noisy, impacting the user experience. Furthermore, the fan's rotation accelerates the flow of dust into the motor, potentially leading to significant dust accumulation over time.

[0005] Third, a composite cooling method combines motor cooling with liquid cooling technology. While this method offers significant cooling benefits, it is complex, costly, difficult to maintain, and carries the risk of liquid leakage, making it unsuitable for typical home treadmill applications.

[0006] In addition, most of the cooling systems in the existing technology adopt a normally open design, that is, the cooling channel is always in an open state regardless of whether the motor is running. Although this ensures the cooling effect, it also leads to the following problems: on the one hand, the cooling channel is exposed for a long time when the motor is not working, and a large amount of dust enters the motor, affecting the motor performance and life; on the other hand, this design cannot adjust the cooling level according to the actual operating status of the motor. There are differences in cooling requirements under different speeds and loads. The always open cooling system cannot achieve intelligent adjustment.

[0007] Regarding motor heat dissipation and dust prevention, existing technologies include motor heat dissipation structures with dust-proof devices, which utilize removable dust covers to open and close the heat dissipation holes. However, these devices require manual operation or an additional motor to drive the dust cover, failing to achieve automatic intelligent adjustment. Furthermore, dust cannot be filtered when the dust cover is open, leaving the motor exposed to the risk of dust accumulation.

[0008] Regarding treadmill motor tension adjustment, conventional belt tensioning devices typically adjust the motor position by adjusting a bolt to achieve belt tension. However, these devices have a simple structure, limited adjustment accuracy, and can affect the alignment accuracy of the cooling system during adjustment, resulting in reduced cooling effectiveness.

[0009] Existing technologies for dust removal often involve disassembling the motor housing for cleaning, which is complex and requires specialized personnel, making it inconvenient for daily maintenance. Some motors with self-cleaning features use built-in brushes to remove dust, but these devices increase internal space and have limited cleaning effectiveness.

[0010] In summary, existing treadmill motor cooling technology has the following shortcomings: First, it cannot automatically switch between heat dissipation and dust protection; second, the cooling system cannot intelligently adjust the cooling timing based on the actual operating status of the motor; third, the motor position adjustment and cooling system lack a coordinated design; and fourth, dust removal is inconvenient and difficult to maintain. Therefore, a treadmill motor cooling device that can automatically and intelligently dissipate heat, effectively prevent dust, and is easy to maintain is needed to improve the cooling effect and service life of the treadmill motor. Summary of the Invention

[0011] The present invention aims to solve the following technical problems existing in the use of existing treadmill motors: 1. Existing treadmill motors require adequate heat dissipation when in operation and dust protection when not in use. However, existing technologies mostly use fixed heat dissipation holes or heat sink designs, which cannot automatically adjust the heat dissipation and dust protection functions according to the motor's operating status; 2. Existing heat dissipation devices often require additional power supply, which increases system complexity, increases energy consumption, and reduces reliability. 3. The heat dissipation requirements of motors vary greatly depending on their operating conditions (such as low-speed operation, idling, and high-speed load operation). Existing heat dissipation systems cannot intelligently adjust the heat dissipation timing based on the actual operating conditions. 4. The treadmill motor position and belt tension can affect the stability and reliability of the cooling system, but existing technologies lack effective adjustment mechanisms. 5. Dust will accumulate in the heat dissipation holes of the motor during long-term use, affecting the heat dissipation effect, but the existing technology lacks effective dust removal methods.

[0012] In order to solve the above technical problems, the present invention provides an automatic intelligent heat dissipation device for a treadmill motor and a treadmill using the heat dissipation device. The automatic intelligent heat dissipation device includes: an energy collection and conversion structure, a transmission actuator, a heat dissipation component and a delay control structure.

[0013] The automatic intelligent heat dissipation device for a treadmill motor includes: an energy collection and conversion structure for collecting treadmill vibrations and converting them into air pressure energy; a transmission actuator connected to the energy collection and conversion structure for converting air pressure energy into linear motion; a heat dissipation component connected to the transmission actuator for controlling the opening and closing of the motor's heat dissipation holes according to the linear motion; and a delay control structure provided in the transmission actuator for intelligently adjusting the heat dissipation timing according to the motor's operating status.

[0014] The heat dissipation assembly includes two heat dissipation protective covers, which are respectively slidably installed on the outer wall of the motor. Each heat dissipation protective cover is provided with a first heat dissipation through-hole. The two heat dissipation protective covers are connected to the sliding connecting rod of the transmission actuator and are used to achieve alignment or closure with the motor's strip-shaped heat dissipation hole through sliding.

[0015] Preferably, the energy collection and conversion structure includes an air inflation lever and an energy conversion air pump, one end of the air inflation lever is hinged to the treadmill frame housing, and the other end is hinged to the energy conversion air pump, which is used to convert mechanical vibration into air pressure energy; the transmission actuator includes a gas pipeline, an actuator cylinder and a sliding connecting rod, the gas pipeline is connected to the energy collection and conversion structure, the actuator cylinder is connected to the gas pipeline, and the sliding connecting rod is connected to the piston rod of the actuator cylinder, which is used to convert air pressure energy into linear motion.

[0016] Preferably, the delay control structure includes a front airbag and a rear airbag, the front airbag is provided with a preset air pressure, and the rear airbag is connected to the energy collection and conversion structure for accumulating air pressure, wherein the transmission actuator is driven only when the accumulated air pressure of the rear airbag exceeds the preset air pressure of the front airbag; the delay control structure also includes a gas injection valve, which is connected to the front airbag and is used to control the preset air pressure of the front airbag, and the gas injection valve adopts a pilot electromagnetic pulse valve and is associated with the treadmill speed through a PLC; an electrically controlled two-way valve and a pressure regulating valve are provided on the air path between the energy collection and conversion structure and the rear airbag, the electrically controlled two-way valve is used to control the air intake and discharge of the rear airbag, and the pressure regulating valve is used to ensure that the air pressure in the air path does not exceed a safe value.

[0017] Preferably, the heat dissipation protective cover adopts a double-layer shell design, and a number of mutually connected enclosed cavities are formed between the outer layer and the inner layer, and each cavity corresponds to a group of the first heat dissipation holes; the heat dissipation protective cover also includes an air nozzle, a connecting hole and a filter screen, the air nozzle is connected to the cavity, and extends to the outside of the treadmill to form a standardized connecting port for connecting an external dust suction device, the connecting holes are arranged on the inner surface of the cavity and are evenly distributed, and are used to form airflow under the action of an external dust suction device, and the filter screen is arranged at the first heat dissipation through-hole for filtering dust and allowing airflow to pass through; the diameter of the connecting holes is 1.0-1.8mm, and is evenly distributed in a plum blossom shape. The hole spacing is 5-8mm, and the effective height of the cavity is 4-8mm. The inner wall of the cavity is smoothed to reduce airflow friction loss and improve dust suction efficiency.

[0018] Preferably, the filter is a multi-layer structure, including an outer coarse filter, a middle electrostatic filter and an inner fine filter. The outer coarse filter is used to intercept large particles of dust, the middle electrostatic filter is used to absorb tiny dust particles, and the inner fine filter is used to prevent extremely fine dust from entering the interior of the motor; the outer layer of the filter is made of stainless steel, the middle layer is electrostatically treated polypropylene fiber, and the inner layer is a high-density PTFE membrane material; the outer edge of the filter is tightly fitted with the edge of the first heat dissipation hole to prevent air from bypassing the filter and entering directly.

[0019] As an alternative, the delay control structure is a thermally responsive structure, comprising a heat-sensitive liquid chamber, a microporous flow-limiting diaphragm, and an adjustable bypass valve. The heat-sensitive liquid chamber is made of aluminum alloy, fits tightly against the outer wall of the motor, and is filled with silicone oil with a large thermal expansion coefficient. The microporous flow-limiting diaphragm is located in the connecting channel between the heat-sensitive liquid chamber and the actuator cylinder. The adjustable bypass valve is arranged in parallel with the microporous flow-limiting diaphragm to adjust the effective flow area of the diaphragm. The adjustable bypass valve is internally provided with a mass block, an elastic element, and a connecting rod mechanism. The elastic element is connected to the mass block and is used to suspend the mass block within the valve body. The connecting rod mechanism is used to convert the vibration of the mass block into a reciprocating micro-displacement of the valve core, so that the bypass valve opening increases with increasing vibration intensity. The valve body of the adjustable bypass valve is provided with an adjusting screw to preset the initial compression of the elastic element and change the system's sensitivity to vibration.

[0020] The present invention also provides a treadmill adopting the above-mentioned automatic intelligent heat dissipation device, including a frame shell, a motor and the automatic intelligent heat dissipation device; the motor is used to drive the treadmill, and the motor shell adopts a strip-shaped heat dissipation hole design; the automatic intelligent heat dissipation device is installed in the frame shell and is used to automatically and intelligently dissipate heat for the motor.

[0021] Preferably, the treadmill also includes a tensioning adjustment device, which includes two fixed holding plates, a tensioning adjustment structure and a supporting movable structure. The two fixed holding plates are used to wrap and fix to the outer wall of the motor, the tensioning adjustment structure is connected to the two fixed holding plates, and the supporting movable structure is connected to one of the two fixed holding plates. The tensioning adjustment structure drives the motor to move slightly around the supporting movable structure, thereby tensioning the belt that transmits motor power; the two fixed holding plates are both provided with connecting fixing holes for realizing the connection and fixation of the two fixed holding plates.

[0022] Preferably, the tension adjustment structure includes an adjusting screw, a T-shaped adjusting nut and an adjusting adaptation plate, one end of the T-shaped adjusting nut is detachably connected to the two fixed clamping plates, and the other end is threadably connected to the adjusting screw, the adjusting adaptation plate is connected to the frame shell and is provided with a movable hole, and the adjusting screw passes through the movable hole; the supporting movable structure includes an adjusting hinge assembly and a connecting plate, the adjusting hinge assembly includes a hinge seat and a hinge sleeve, the hinge seat is connected to the frame shell, the hinge sleeve is movably sleeved on the hinge shaft of the hinge seat, and the connecting plate is fixedly connected to the hinge sleeve and is formed on one of the fixed clamping plates.

[0023] Preferably, the two fixed clamping plates are provided with a plurality of second heat dissipation holes in the form of strips, and the second heat dissipation holes correspond one-to-one to the strip heat dissipation holes on both sides of the motor; the first heat dissipation holes are in the form of strips, and their area is larger than that of the motor's strip heat dissipation holes.

[0024] Preferably, the first heat dissipation through-hole gradually becomes fully connected with the second heat dissipation through-hole and the strip through-hole of the motor as the heat dissipation protective cover slides, thereby achieving heat dissipation; when the treadmill is not in use, the heat dissipation protective cover automatically closes, covering the second heat dissipation through-hole to form a dust-proof barrier; when the treadmill is in use, the heat dissipation protective cover opens, the motor dissipates heat normally, and the filter filters the incoming air.

[0025] The automatic intelligent heat dissipation device for a treadmill motor and the treadmill using the heat dissipation device provided by the present invention have the following beneficial effects: 1. Automated intelligent heat dissipation: This invention utilizes the vibration energy generated by the user exercising on the treadmill, converting it into air pressure energy, which in turn drives the opening and closing of the heat dissipation protective cover. This achieves automatic switching between motor heat dissipation and dust protection without the need for an additional power supply, improving system reliability and energy efficiency. 2. Delay control and intelligent adjustment: The delay control structure can intelligently control the cooling timing according to the actual operating status and load conditions of the motor. The cooling system will not be activated when the motor is running at low speed or idling. The cooling channel will be activated only when the motor is running at high speed and under load to generate more heat. This achieves on-demand cooling and avoids unnecessary operation of the cooling system. 3. Precise tension adjustment: The tension adjustment device can accurately adjust the position of the motor and the tension of the belt, ensuring the stability and reliability of the cooling system and improving the working efficiency of the entire system; 4. Multiple dust filtration: The multi-layer filter structure and dust-absorbing heat dissipation protective cover design can not only effectively filter the incoming air during operation, but also actively remove dust through external dust collection equipment during regular maintenance, effectively solving the dust problem during the motor heat dissipation process; 5. Thermal response adaptation: The thermal response delay control structure can automatically adjust the cooling timing according to the actual motor temperature and user motion status. Combined with the correlation control of vibration intensity and cooling demand, it further improves the intelligence level and energy utilization efficiency of the system.

[0026] Through the above technical solution, the present invention effectively solves the problems existing in the existing treadmill motor heat dissipation system, improves the heat dissipation effect and dustproof ability of the motor, extends the service life of the motor, and improves the operating performance and user experience of the treadmill. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic structural diagram of the present invention applied to a treadmill; Figure 2 A schematic structural diagram of the bottom portion of a treadmill when the present invention is applied thereto; Figure 3 A partial cross-sectional view of the present invention applied to a treadmill; Figure 4 This is a partial structural diagram of the present invention applied to a treadmill; Figure 5 This is a schematic structural diagram of the intelligent heat dissipation device of the present invention; Figure 6 for Figure 5 A partial enlarged view of point Ⅰ in the middle; Figure 7 It is a schematic diagram of the disassembly structure of the present invention; Figure 8 This is a schematic structural diagram of the cavity and other components of Example 2; Figure 9 This is a schematic structural diagram of the connection holes and other components of Example 2; Figure 10 Schematic diagram of the structure of Example 3.

[0028] Figure 1: rack housing 10, energy collection and conversion structure 20, transmission actuator 30, heat dissipation assembly 40, tensioning adjustment device 50, motor 11, belt 12, air-inflating lever 21, energy conversion air pump 22, gas pipeline 31, actuator cylinder 32, sliding link 33, delay control structure 34, heat-sensitive liquid cavity 35, microporous flow limiting diaphragm 36, adjustable bypass valve 37, heat dissipation protection cover 41, fixed holding plate 51, tension adjustment structure Structure 52, supporting movable structure 53, strip-shaped heat dissipation hole 111, front airbag 341, rear airbag 342, first heat dissipation through hole 411, second heat dissipation through hole 511, connecting fixing hole 512, adjusting screw 521, T-shaped adjusting nut 522, adjusting adaptation plate 523, adjusting hinge assembly 531, connecting plate 532, movable hole 5231, hinge seat 5311, hinge sleeve 5312, cavity 412, air nozzle 414, connecting hole 415. DETAILED DESCRIPTION

[0029] Example 1: This embodiment provides an automatic intelligent heat dissipation device for a treadmill motor. Addressing the need for existing treadmill motors to dissipate sufficient heat during operation and protect against dust when not in use, this device utilizes the vibration energy generated by the user exercising on the treadmill, converting it into air pressure energy to drive the opening and closing of a heat dissipation protective cover. This device not only automatically switches between motor heat dissipation and dust protection, but also, through a time-delay control structure, intelligently adjusts the timing of heat dissipation based on the motor's operating status, effectively extending the motor's service life, improving operational performance, and enhancing energy efficiency.

[0030] refer to Figure 1-Figure 7 The automatic intelligent heat dissipation device is installed in the frame housing 10 of the treadmill and is designed for a motor 11 whose housing has strip-shaped heat dissipation holes 111 (the strip-shaped heat dissipation holes are as follows Figure 7 Unlike conventional motor housings with lateral cooling holes or externally protruding fins to expand the heat dissipation area, this motor housing employs strip-shaped cooling holes that can be opened and closed by sliding a heat dissipation shield. The device utilizes a three-stage energy conversion mechanism for intelligent control, implemented through the energy collection and conversion structure 20, the transmission actuator 30, and the heat dissipation assembly 40. The specific structure and operating process are as follows: First, the energy collection and conversion structure 20 collects running vibrations through the air-blowing lever 21. One end of the air-blowing lever 21 is hinged to the frame shell 10 of the treadmill, and the other end is hinged to the energy conversion air pump 22, which converts mechanical vibrations into air pressure energy. Figure 3 ; Secondly, the transmission actuator 30 includes a gas pipeline 31, an actuator cylinder 32 and a sliding connecting rod 33. The gas pipeline 31 conducts the energy conversion air pump 22 and the actuator cylinder 32 (only the part of the gas pipeline connected to the actuator cylinder is shown in the figure, and the rest is not shown in the figure). The actuator cylinder 32 is connected to the sliding connecting rod 33 through its piston rod to convert the air pressure energy into linear motion. Figure 4 ; Finally, the heat dissipation assembly 40 is composed of two heat dissipation protective covers 41. Both heat dissipation protective covers 41 are connected to the sliding connecting rod 33 and are slidably installed on the outer wall of the motor 11. A first heat dissipation through-hole 411 is provided thereon. Driven by the sliding connecting rod 33, the two heat dissipation protective covers 41 are accurately aligned or tightly sealed with the strip heat dissipation holes 111 of the motor 11.

[0031] The delay control structure 34, a key component of the transmission actuator 30, includes a front airbag 341 and a rear airbag 342. The preset air pressure of the front airbag 341 is controlled by a gas injection valve (the gas injection valve is not shown in the figure). When the front airbag 341 has a preset air pressure, the rear airbag 342 needs to accumulate sufficient air pressure to overcome the front air pressure and push the piston rod of the actuator cylinder 32 to move. This air pressure accumulation process achieves time delay control from the start of the motor 11 to the opening of the heat dissipation protective cover. The purpose of this delay control structure 34 is to intelligently control the timing of heat dissipation based on the actual operating state and load conditions of the motor 11. The heat dissipation system is temporarily deactivated when the motor 11 is running at low speed or idling, because the motor 11 generates less heat at this time and does not require immediate heat dissipation. The heat dissipation channel is only activated when the motor 11 is running at high speed and under load, generating more heat, thereby achieving on-demand heat dissipation and avoiding unnecessary operation of the heat dissipation system.

[0032] In this embodiment, the gas injection valve can adopt a pilot electromagnetic pulse valve and be associated with the treadmill speed through PLC. The gas injection valve adopts an internal self-supply method and is pre-installed with a certain amount of gas to achieve the preset air pressure of the front airbag 341.

[0033] Furthermore, to ensure the ease of use and safety of the automatic intelligent heat dissipation device, an electrically controlled two-way valve and a pressure regulating valve are provided on the air path between the energy conversion air pump 22 and the rear air bag 342 (neither the electrically controlled two-way valve nor the pressure regulating valve is shown in the figure). The electrically controlled two-way valve is used to control the intake and discharge of air into the rear air bag 342, while the pressure regulating valve ensures that the air pressure in the air path does not exceed the safe value of the air path, thereby preventing damage to the structure due to excessive air pressure caused by prolonged intake time.

[0034] To ensure that the motor 11 can dissipate heat sufficiently when needed, the first heat dissipation holes 411 are strip-shaped and have an area larger than that of the strip-shaped heat dissipation holes 111 of the motor 11 , thereby ensuring that the heat dissipated from the strip-shaped heat dissipation holes 111 of the motor 11 can be completely dissipated through the first heat dissipation holes 411 .

[0035] refer to Figure 4 、 Figure 6-Figure 7 In this embodiment, the motor 11 transmits power to the treadmill through the belt 12. To ensure the stability of force transmission, the belt 12 must always be in a tensioned state. It is worth noting that the automatic intelligent heat dissipation device in this embodiment is closely related to the stable operation of the motor 11, because the operating state of the motor 11 directly affects the heat dissipation requirements and the operating frequency of the heat dissipation device. When the belt is loose, it may cause uneven load operation of the motor, thereby affecting the stability of the vibration collection of the air lever 21, and ultimately interfering with the precise opening and closing control of the heat dissipation protective cover 41. In addition, since the heat dissipation protective cover 41 needs to be precisely aligned with the strip-shaped heat dissipation holes 111 on the surface of the motor 11, the positional stability of the motor 11 is crucial to the heat dissipation effect. Therefore, in order to ensure the effective operation of the entire automatic intelligent heat dissipation system, a tensioning adjustment device 50 is specially provided for accurately adjusting the position of the motor 11 and the tensioning state of the belt 12, thereby ensuring the stability and reliability of the heat dissipation system.

[0036] The tensioning device 50 includes two fixed clamping pieces 51, a tensioning structure 52, and a supporting movable structure 53. The tensioning structure 52 drives the motor 11 to move slightly around the supporting movable structure, thereby tensioning the belt. The specific implementation structure is as follows: The two fixed holding pieces 51 serve as connecting transition pieces of the tensioning adjustment device 50, connecting and fixing the motor 11, the tensioning adjustment structure 52, and the supporting movable structure 53 together. The two fixed holding pieces 51 are assembled and wrapped around the outer wall of the motor 11. Both fixed holding pieces 51 are provided with connecting and fixing holes 512 for connecting and fixing the two fixed holding pieces 51; The tension adjustment structure 52 includes an adjustment screw 521, a T-shaped adjustment nut 522, and an adjustment adaption plate 523. One end of the T-shaped adjustment nut 522 is detachably connected to the two connecting fixing holes 512 via a bolt, and the other end is movably connected to the adjustment screw 521 via a thread. The adjustment adaption plate 523 is connected to the frame housing 10 and has a movable hole 5231. The adjustment screw 521 with a screw head passes through the movable hole 5231 to achieve support for the adjustment screw 521 by the adjustment adaption plate 523, while also allowing the adjustment screw 521 to move within the movable hole 5231 as the thread is adjusted. The supporting movable structure 53 includes an adjustable hinge assembly 531 and a connecting plate 532. The adjustable hinge assembly 531 includes a hinge seat 5311 having a hinge shaft and a hinge sleeve 5312 movably connected to the hinge shaft. The hinge seat 5311 is connected to the frame shell 10, and the hinge sleeve 5312 and the connecting plate 532 are fixedly connected by welding. The connecting plate 532 is formed on one of the fixed clamping plates 51.

[0037] The working process of the tension adjustment device 50 is as follows: The adjusting screw 521 is passed through the movable hole 5231 and threadedly connected to the T-shaped adjusting nut 522. At the same time, the two fixed clamping plates 51 are spliced and installed on the outer wall of the motor 11. During assembly, the second heat dissipation through-hole 511 on the fixed clamping plate 51 corresponds one-to-one with the strip heat dissipation hole 111 on the motor 11. Then the T-shaped adjusting nut 522 is fixed to the two connecting fixing holes 512 by bolts to realize the connection and fixation of the two fixed clamping plates 51, the motor 11 and the tension adjustment structure 52. Then, the adjusting screw 521 is rotated to pull the motor 11. The motor 11 rotates slightly around the hinge axis through the connecting plate 532 and the hinge sleeve 5312 to realize the movement of the motor 11, thereby tightening the belt 12 used to transmit power to the motor 11.

[0038] In order to ensure that the setting of the two fixed holding plates 51 does not affect the heat dissipation of the motor 11, the two fixed holding plates 51 are each provided with a plurality of second heat dissipation holes 511 in the form of strips. When the two fixed holding plates 51 are installed, the second heat dissipation holes 511 thereon respectively correspond one-to-one with the strip heat dissipation holes 111 on both sides of the motor 11. The two heat dissipation protection covers 41 are respectively slidably connected to the two fixed holding plates 51. The sizes of the second heat dissipation holes 511 and the first heat dissipation holes 411 match each other, and the first heat dissipation holes 411 gradually become completely connected with the second heat dissipation holes 511 and the strip heat dissipation holes of the motor 11 as the heat dissipation protection cover 41 slides, thereby achieving heat dissipation.

[0039] The specific working process of the automatic intelligent heat dissipation device of the present invention is as follows: When the treadmill is not in use, the gas injection valve is closed, there is no pre-filled gas in the front air bag 341, the air path connected to the rear end of the actuator cylinder 32 is in an open state, and there is no reserved gas at the rear end of the actuator cylinder 32. At this time, the air pressure at the front and rear ends of the actuator cylinder 32 is the same; When the speed of the motor 11 is high and heat dissipation is required immediately after the motor 11 is turned on, the gas injection valve is still closed at this time to keep the air pressure at the front and rear ends of the actuator cylinder 32 consistent. Therefore, when the user runs on the treadmill and generates vibrations, the vibration causes the inflation lever 21 to rotate slightly up and down repeatedly, thereby causing the inflation lever 21 to drive the piston rod of the energy conversion air pump 22 to move up and down, compressing the gas, and the gas is transported to the rear end of the actuator cylinder 32 through the gas pipe 31, so that the air pressure at the rear end of the actuator cylinder 32 is greater than the air pressure at the front end, thereby pushing the piston rod of the actuator cylinder 32 to move, and the piston rod drives the sliding connecting rod 33 to move, and the sliding connecting rod 33 drives the heat dissipation protective cover 41 to move, and aligns the second heat dissipation through hole 511 on it with the first heat dissipation through hole 411 and the strip heat dissipation hole 111 of the motor 11, thereby achieving heat dissipation of the motor 11; When the speed of the motor 11 is low, heat dissipation can be delayed. At this time, the gas injection valve is opened and the pre-installed gas is filled into the front airbag 341, so that the front airbag 341, that is, the front end of the execution cylinder 32, has a certain air pressure. Therefore, when the vibration generated by the user running is converted into gas and transported to the rear airbag 342, and when the air pressure accumulated in the rear airbag 342 is greater than the front air pressure, it can push the piston rod of the execution cylinder 32 to move, and the piston rod drives the heat dissipation protective cover 41 to move through the sliding connecting rod 33 to open the strip heat dissipation hole 111, thereby realizing heat dissipation of the motor 11.

[0040] Example 2: Dust-absorbing heat dissipation protective cover structure This embodiment provides an innovative dust-absorbing heat dissipation protective cover structure. By providing a cavity and an external dust collection interface system on the heat dissipation protective cover 41, a regular active dust removal function is achieved, effectively solving the dust protection problem during the motor heat dissipation process.

[0041] like Figure 8-9 As shown, the core of this embodiment lies in the structural innovation of the heat dissipation protective cover 41. The majority of the heat dissipation protective cover 41 utilizes a double-layer shell design, with a number of interconnected, enclosed cavities 412 formed between the outer and inner layers. Each cavity 412 corresponds to a set of first heat dissipation holes 411, and the inner surface of each cavity 412 is also convex, matching the outer surface contour of the heat dissipation protective cover 41.

[0042] The outside of the cavity 412 is connected to an air nozzle 414. The air nozzle 414 extends to an appropriate position outside the treadmill through a connecting tube to form a standardized connecting port. The connecting port is designed to be compatible with the shape and size of a household vacuum cleaner nozzle. The surface is smooth and slightly concave to ensure a good seal when the vacuum cleaner nozzle is fitted. The connecting port can be sealed and protected by a dust cover when not in use. Preferably, the effective height of the cavity 412 is designed to be 4-8 mm, ensuring that there is enough space to form an effective airflow without excessively increasing the overall thickness of the heat dissipation protective cover 41. The inner wall of the cavity 412 is smoothed to reduce airflow friction loss and improve dust collection efficiency.

[0043] On the inner surface of cavity 412, facing the motor, are multiple small connection holes 415 with diameters of 1.0-1.8 mm, evenly distributed. Preferably, connection holes 415 are evenly distributed in a plum blossom pattern, with a spacing of 5-8 mm. Each first heat dissipation hole 411 is surrounded by 12-16 connection holes 415 to ensure a uniform airflow during vacuuming and avoid blind spots.

[0044] The key to this embodiment lies in the dedicated filter provided at the second heat dissipation hole 511. The filter is a multi-layer structure, including: an outer coarse filter: to intercept large particles of dust; a middle electrostatic filter: to absorb tiny dust particles; an inner fine filter: to prevent extremely fine dust from entering the interior of the motor. Preferably, the outer layer of the filter is made of stainless steel, the middle layer is electrostatically treated polypropylene fiber, and the inner layer is a high-density PTFE membrane material. The filter is designed to have a service life of 12 months, but it is recommended that users vacuum and clean it every 3 months to maintain the best heat dissipation effect. To facilitate users in judging the timing of cleaning, a transparent observation window is provided on the edge of the filter, so that the dust accumulation on the filter can be visually checked.

[0045] The filter installation method is specially designed with a snap-on structure, which is convenient for regular removal, cleaning or replacement. The outer edge of the filter fits tightly with the edge of the second heat dissipation hole 511 to prevent air from bypassing the filter and entering directly.

[0046] In actual use, this system has the following working modes: Operation protection mode: When the treadmill is in use, the heat dissipation protection cover 41 is opened, the motor dissipates heat normally, and the filter screen filters the incoming air; Closed protection mode: When the treadmill is not in use, the heat dissipation protection cover 41 automatically closes and covers the second heat dissipation through-hole 511 to form a dust-proof barrier; Cleaning mode: During regular maintenance, when the heat dissipation protective cover 41 is closed, attach the nozzle of a household vacuum cleaner to the connecting port and start the vacuum cleaner. At this time, the negative pressure generated by the vacuum cleaner is transmitted to the inside of the cavity 412 through the connecting port, and then forms a local airflow through the connecting hole 415 on the inner surface. These airflows can effectively pass through the gap between the first heat dissipation through-hole 411 and the filter, adsorb and carry away the dust particles attached to the surface of the filter. As the vacuuming process continues, the dust particles in the air are gradually peeled off from the surface of the filter, enter the cavity 412 through the connecting hole 415, and are finally sucked away by the vacuum cleaner through the air nozzle. In this process, the negative pressure generated by the vacuum cleaner can effectively remove the dust accumulated on the filter, and cleaning can be completed without removing the filter.

[0047] The advantage of this design is that it utilizes existing household vacuum cleaners, eliminating the need for additional power sources or complex mechanisms. During daily cleaning, users simply need to briefly vacuum the connection port to maintain a clean cooling system. Furthermore, since the entire cleaning process occurs with the heat shield 41 closed, the risk of dust spreading into the motor interior is avoided.

[0048] Connecting port 418 features a universal connector design, compatible with most commercial vacuum cleaner models. Additionally, guide markings are located around connecting port 418 to help users quickly locate the correct location. The treadmill's instructions recommend performing this type of cleaning and maintenance monthly, or more frequently in dusty environments.

[0049] This design not only simplifies maintenance but also avoids the potential for failure and energy consumption associated with built-in electrical components. Furthermore, the carefully designed filter ensures basic dust protection, ensuring safe motor operation, even if cleaning and maintenance are not performed for extended periods.

[0050] Example 3 Alternative implementations of the delay control structure, see Figure 10 .

[0051] The present invention also provides an alternative implementation of the delay control structure, such as Figure 10 As shown, this alternative implementation maintains the original pneumatic system and only optimizes the delay control part.

[0052] This alternative embodiment mainly changes the internal structure of the delay control structure 34 and adopts a thermal expansion liquid filling delay mechanism. The specific structure includes: The heat-sensitive liquid cavity 35 is made of aluminum alloy, fits tightly against the outer wall of the motor 11, and is filled with special silicone oil with a large thermal expansion coefficient; The microporous flow limiting diaphragm 36 is located on the connecting channel between the heat-sensitive liquid cavity 35 and the actuator cylinder 32; The adjustable bypass valve 37 is arranged in parallel with the microporous flow-limiting diaphragm 36, and the effective flow area of the diaphragm can be manually adjusted.

[0053] This alternative implementation works as follows: When motor 11 starts, as its temperature rises, the silicone oil in heat-sensitive liquid chamber 35, located on the outer wall of motor 11, expands and generates pressure. This pressure is transmitted through microporous flow-restricting diaphragm 36 to actuator cylinder 32, pushing the piston rod to move. Because microporous flow-restricting diaphragm 36 dampens the flow of liquid, there is a time delay in the pressure transmission, thus achieving time delay control from the time motor 11 heats up to the time heat dissipation shield 41 opens.

[0054] The adjustable bypass valve 37 allows the user to adjust the delay time according to actual needs. The wider the bypass valve 37 is opened, the shorter the delay time; when the bypass valve 37 is fully closed, the delay effect is most obvious.

[0055] Furthermore, the adjustable bypass valve 37 can be configured to adjust its opening based on the vibrations caused by the user's running. Specifically, the adjustable bypass valve 37 is internally provided with a mass and an elastic element, with the mass suspended within the valve body by the elastic element. When the user's movement on the treadmill generates vibrations, the mass vibrates due to inertia within the elastic element. This vibration is converted into a small reciprocating displacement of the bypass valve core through a connecting rod mechanism, thereby dynamically adjusting the opening of the adjustable bypass valve 37.

[0056] The cleverness of this design lies in that it links the user's running intensity with the heat dissipation needs: when the user's exercise intensity is high, the vibration generated is also large, the amplitude of the mass block increases, and the average opening of the adjustable bypass valve 37 increases accordingly, shortening the delay time, so that the heat dissipation system can respond faster; when the user only performs light exercise, the vibration is small, and the adjustable bypass valve 37 is kept at a small opening, ensuring that the motor does not start the heat dissipation system too early under light load conditions, thereby achieving energy-saving effects.

[0057] In addition, the valve body of the adjustable bypass valve 37 is equipped with an adjustment screw. The user can adjust the initial compression of the elastic element by adjusting this screw, thereby changing the system's sensitivity to vibration and achieving personalized adjustment. When the adjustment screw is turned inward, the pre-compression of the elastic element increases, and the system's response to vibration is reduced. Conversely, when the adjustment screw is turned outward, the system's response to vibration is enhanced.

[0058] This dynamic adaptive design enables the cooling system to adjust in real time according to the user's actual movement status, ensuring timely cooling and avoiding unnecessary cooling system startup, further improving energy utilization efficiency and user experience.

[0059] This design principle is similar to the inertial regulating valve mechanism widely used in the prior art, such as the variable damping system in automobile shock absorbers, which includes an automatic valve opening adjustment device triggered by vibration. A typical example is the CVSA2 / Kinetic H2 system developed by Tenneco, which uses the vibration during vehicle driving to automatically adjust the opening of the shock absorber oil circuit valve through the inertial mass block to achieve the purpose of adaptive adjustment of road conditions. Another similar application is the adaptive vibration regulating valve in some high-end air-conditioning equipment, in which the vibration intensity directly affects the refrigerant flow, thereby achieving energy efficiency optimization. The present invention draws on the working principles of these mature technologies and makes innovative improvements to the specific needs of treadmill motor heat dissipation, especially making special designs in terms of the correlation between vibration intensity and heat dissipation needs.

[0060] This alternative embodiment is applicable to various treadmill products, and is particularly suitable for use in environments with large temperature changes. It can automatically adjust the heat dissipation timing according to the actual temperature of the motor 11, avoiding interference of the ambient temperature on the heat dissipation effect.

Claims

1. An automatic intelligent heat dissipation device for a treadmill motor, characterized in that: include: Energy collection and conversion structure, used to collect treadmill vibration and convert it into air pressure energy; a transmission actuator, connected to the energy collection and conversion structure, for converting air pressure energy into linear motion; a heat dissipation assembly connected to the transmission actuator and configured to control the opening and closing of the heat dissipation holes of the motor according to the linear motion; A delay control structure is provided in the transmission actuator for intelligently adjusting the heat dissipation timing according to the motor operating state; Among them, the heat dissipation assembly includes two heat dissipation protective covers, which are respectively slidably installed on the outer wall of the motor. Each heat dissipation protective cover is provided with a first heat dissipation hole. The two heat dissipation protective covers are connected to the sliding connecting rod of the transmission actuator and are used to achieve alignment or closure with the motor's strip-shaped heat dissipation hole through sliding.

2. The automatic intelligent heat dissipation device according to claim 1, characterized in that: The energy collection and conversion structure includes an air-inflating lever and an energy conversion air pump. One end of the air-inflating lever is hinged to the treadmill frame housing, and the other end is hinged to the energy conversion air pump, which is used to convert mechanical vibration into air pressure energy. The transmission actuator includes a gas pipeline, an actuator cylinder and a sliding connecting rod. The gas pipeline is connected to the energy collection and conversion structure, the actuator cylinder is connected to the gas pipeline, and the sliding connecting rod is connected to the piston rod of the actuator cylinder for converting air pressure energy into linear motion.

3. The automatic intelligent heat dissipation device according to claim 1, characterized in that: The delay control structure includes a front airbag and a rear airbag, wherein the front airbag is set with a preset air pressure, and the rear airbag is connected to the energy collection and conversion structure for accumulating air pressure, wherein the transmission actuator is driven only when the accumulated air pressure of the rear airbag exceeds the preset air pressure of the front airbag; The delay control structure also includes a gas injection valve, which is connected to the front airbag and is used to control the preset air pressure of the front airbag. The gas injection valve adopts a pilot electromagnetic pulse valve and is associated with the treadmill speed through a PLC; An electrically controlled two-way valve and a pressure regulating valve are provided on the air path between the energy collection and conversion structure and the rear end airbag. The electrically controlled two-way valve is used to control the air intake and discharge of the rear end airbag, and the pressure regulating valve is used to ensure that the air pressure in the air path does not exceed a safe value.

4. The automatic intelligent heat dissipation device according to claim 1, characterized in that: The heat dissipation protection cover adopts a double-layer shell design, and a plurality of mutually connected closed cavities are formed between the outer layer and the inner layer, and each cavity corresponds to a group of the first heat dissipation holes; The heat dissipation protective cover further includes an air nozzle, a connecting hole, and a filter screen. The air nozzle is connected to the cavity and extends to the outside of the treadmill to form a standardized communication port for connecting to an external dust collection device. The connecting holes are provided on the inner surface of the cavity and are evenly distributed, so as to form an airflow under the action of the external dust collection device. The filter screen is provided at the first heat dissipation through hole to filter dust while allowing airflow to pass through. The diameter of the connecting holes is 1.0-1.8 mm and is evenly distributed in a plum blossom shape. The hole spacing is 5-8 mm. The effective height of the cavity is 4-8 mm. The inner wall of the cavity is smoothed to reduce airflow friction loss and improve dust collection efficiency.

5. The automatic intelligent heat dissipation device according to claim 4, characterized in that: The filter is a multi-layer structure, including an outer coarse filter, a middle electrostatic filter and an inner fine filter. The outer coarse filter is used to intercept large particles of dust, the middle electrostatic filter is used to absorb tiny dust particles, and the inner fine filter is used to prevent extremely fine dust from entering the motor. The outer layer of the filter is made of stainless steel, the middle layer is electrostatically treated polypropylene fiber, and the inner layer is high-density PTFE membrane material; The outer edge of the filter is tightly fitted to the edge of the first heat dissipation hole to prevent air from bypassing the filter and entering directly.

6. The automatic intelligent heat dissipation device according to claim 1, characterized in that: The delay control structure is a thermally responsive structure, including a heat-sensitive liquid cavity, a microporous flow-limiting diaphragm, and an adjustable bypass valve. The heat-sensitive liquid cavity is made of aluminum alloy, closely fits the outer wall of the motor, and is filled with silicone oil with a large thermal expansion coefficient. The microporous flow-limiting diaphragm is located in the connecting channel between the heat-sensitive liquid cavity and the actuator cylinder. The adjustable bypass valve is arranged in parallel with the microporous flow-limiting diaphragm to adjust the effective flow area of the diaphragm. The adjustable bypass valve is internally provided with a mass block, an elastic element, and a connecting rod mechanism. The elastic element is connected to the mass block and is used to suspend the mass block within the valve body. The connecting rod mechanism is used to convert the vibration of the mass block into a small reciprocating displacement of the valve core, so that the opening of the bypass valve increases with the increase of the vibration intensity. An adjusting screw is provided on the valve body of the adjustable bypass valve for presetting the initial compression amount of the elastic element and changing the sensitivity of the system to vibration.

7. A treadmill, characterized in that: It comprises a frame housing, a motor and the automatic intelligent heat dissipation device according to any one of claims 1 to 6; The motor is used to drive the treadmill, and the motor housing is designed with strip-shaped heat dissipation holes; The automatic intelligent heat dissipation device is installed in the frame shell and is used for automatically and intelligently dissipating heat for the motor.

8. The treadmill according to claim 7, wherein: The treadmill further includes a tensioning device, which includes two fixed holding plates, a tensioning structure, and a supporting movable structure. The two fixed holding plates are used to wrap around and be fixed to the outer wall of the motor. The tensioning structure is connected to the two fixed holding plates. The supporting movable structure is connected to one of the two fixed holding plates. The tensioning structure drives the motor to move slightly around the supporting movable structure, thereby tensioning the belt that transmits motor power. The two fixing and holding plates are both provided with connecting and fixing holes for realizing the connection and fixing of the two fixing and holding plates.

9. The treadmill according to claim 8, wherein: The tension adjustment structure includes an adjustment screw, a T-shaped adjustment nut, and an adjustment adaptation plate. One end of the T-shaped adjustment nut is detachably connected to the two fixed clamping plates, and the other end is threadedly connected to the adjustment screw. The adjustment adaptation plate is connected to the frame housing and is provided with a movable hole, through which the adjustment screw passes. The supporting movable structure includes an adjusting hinge assembly and a connecting plate. The adjusting hinge assembly includes a hinge seat and a hinge sleeve. The hinge seat is connected to the frame shell. The hinge sleeve is movably sleeved on the hinge shaft of the hinge seat. The connecting plate is fixedly connected to the hinge sleeve and is formed on one of the fixed clamping pieces.

10. The treadmill according to claim 8, wherein: The two fixed holding plates are each provided with a plurality of strip-shaped second heat dissipation holes, and the second heat dissipation holes correspond one to one with the strip-shaped heat dissipation holes on both sides of the motor; The first heat dissipation through hole is strip-shaped, and its area is larger than the area of the strip-shaped heat dissipation hole of the motor.

11. The treadmill according to claim 7, wherein: As the heat dissipation protective cover slides, the first heat dissipation through hole gradually becomes fully connected with the second heat dissipation through hole and the strip-shaped through hole of the motor to achieve heat dissipation; When the treadmill is not in use, the heat dissipation protection cover automatically closes and covers the second heat dissipation hole to form a dust-proof barrier; When the treadmill is in use, the heat dissipation protective cover is opened, the motor dissipates heat normally, and the filter screen filters the incoming air.

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