A universal sealed motor motor retrofit assembly of vibration type and its improved use method

Abstract

The application discloses a kind of nitrogen protection upgrading components of vibrating motor, belong to motor protection equipment technical field.The application includes airtight vibrating motor motor main body, the original main shaft end of motor main body is equipped with main shaft lengthening kit, eccentric counterweight slider and heat dissipation fan kit are integrated outside lengthening kit, and coaxial synchronous air cooling structure is formed.Equipment outside is arranged with top and bottom cover snap-on shell modification kit, and air cooling flow channel and nitrogen airtight flow channel are independently arranged in shell, two types of channels do not interfere with each other, and can be independently or cooperatively operated.Hinge and locking lock structure are configured to the shell, and airtight nitrogen protection kit is simultaneously matched to form airtight protection atmosphere.The application innovatively realizes short shaft direct installation synchronous heat dissipation and nitrogen airtight protection integration, and the component is adapted to alternating current and direct current of various specifications, covers various types of industrial and civil equipment, can prolong the service life of motor, has the benefits of energy saving, emission reduction, carbon reduction and consumption reduction.

Description

Technical Field

[0001] This invention relates to the field of vibration motor upgrading and retrofitting technology, specifically a universal vibration-type sealed motor upgrading and retrofitting component and its improved usage method. It is suitable for assembling various large, medium, and small AC and DC sealed vibration-type assistive motors, relying on the rotation of elliptical eccentric counterweight sliders at both ends to generate centrifugal weightlessness and vibration. It can be used for on-site upgrading and retrofitting of existing vibration boosters, assistive beds, assistive chairs, and various vibration-assisted devices, or as a complete set of brand-new vibration motors. It can be applied to various equipment requiring vibration, such as industrial screening machinery, construction equipment, concrete leveling devices, vibration cleaning devices, medical physiotherapy vibration assistive devices, vibration-assisted massagers, vibration-assisted beds, vibration-assisted chairs, and sports training equipment. This invention belongs to the field of green and low-carbon technology, achieving energy saving, emission reduction, and carbon reduction benefits by reducing the temperature rise of the coil and counterweight during operation and extending the service life of the vibration motor. Background Technology

[0002] There are currently a large number of enclosed vibration motors on the market. These motors generate vibration by using eccentric counterweights at both ends of the main shaft. They cover a full range of power levels, from large to small, and come in various sizes. The eccentric counterweights are mainly of two types: elliptical and semi-elliptical. The housings are available in aluminum alloy and engineering plastic, and they are compatible with various power and voltage specifications, as well as AC and DC power supply modes. These vibration motors are widely used in products such as concrete leveling tools, sand and gravel screening equipment, vibration cleaning equipment, physiotherapy vibration boosters, vibration-assisted beds, vibration-assisted chairs, and various vibration-assisted devices.

[0003] Currently available sealed vibration motors generally suffer from the following technical limitations and industry pain points: Regarding heat dissipation, existing products mostly rely on passive cooling via surface heat dissipation fins, with the internal cavity completely sealed and lacking forced convection channels. After the motor is powered on, the coils and iron core generate basic heat under electromagnetic influence. The electromagnetic drive force propels the spindle to rotate at high speed, and the counterweights at both ends of the spindle continue to rotate at high speed. Friction and vibration combine to generate additional heat, and both types of heat accumulate simultaneously in the sealed internal cavity, causing the internal temperature to rise linearly with operating time. The core heat source is concentrated in the internal coils and iron core, and the high-speed rotation of the counterweights brings additional localized high temperatures. Conventional modifications on the market simply involve adding a fan to the outer casing. Airflow cannot penetrate the core mechanism between the two counterweights, only blowing on the outer shell surface. This leads to continuous heat accumulation in the counterweight area, causing insulation aging and high-temperature deformation of the counterweights even after a short period of operation. Under high-temperature conditions, the coil insulation layer accelerates thermal aging and decay, resulting in a continuous decline in insulation performance. In severe cases, this can cause inter-turn short circuits, breakdowns, burnouts, and even the risk of high-temperature fires. This problem is prevalent in vibratory motors of all sizes, with higher power and longer operating times exacerbating the heat accumulation issue. Existing air-cooling retrofit solutions generally have structural defects; most solutions only add a fan to the outside of the vibratory motor to blow air onto the outer shell surface, preventing airflow from entering the internal core mechanism. While it can remove heat from the outer shell, the core heat-generating areas such as the coil, iron core, and counterweight remain in a sealed, heat-accumulating state, resulting in extremely low heat dissipation efficiency and failing to address the root cause of internal heat accumulation. Furthermore, existing modification solutions are limited in specifications, failing to cover a full range of large, medium, and small vibration-type assist motors, leading to poor versatility. Market-available air-cooled fans have a single assembly method, lacking two compatible options: a direct-mount fan next to the original counterweight or an extended spindle with multiple fans. The locking plastic shell lacks airflow channels, causing airflow to scatter and preventing directional cooling through the counterweight. Regarding protection, existing sealed structures rely solely on the shell's sealing ring for physical isolation, which can deteriorate under long-term vibration conditions. Micro-leakage allows external moisture, corrosive gases, and dust particles to slowly penetrate the inner cavity, causing core corrosion, coil oxidation, and bearing lubrication failure. The weight of the counterweight changes after oxidation and corrosion, resulting in a decrease in vibration effect and a gradual decline in the performance of the vibration motor over the years. Under high humidity conditions, moisture from micro-leakage in the sealed shell adheres to the counterweight, causing iron block corrosion and a decrease in vibration effect. In terms of energy consumption, existing sealed vibration-type power assist motors have high energy consumption due to increased winding resistance and decreased electromagnetic conversion efficiency caused by heat accumulation in the inner cavity. Under the same output power, the temperature rise has a significant drag effect on efficiency in various AC and DC power supply scenarios, making it difficult to support long-term continuous operation under medium and high power conditions.

[0004] The existing nitrogen protection solutions on the market also have obvious shortcomings: the gas storage structure is single, mostly using butyl rubber capsules of uniform specification, lacking differentiated configurations of multiple forms and multiple materials such as gas storage pipes, gas cylinders and gas tanks, which cannot meet the differentiated working condition requirements of small narrow spaces, medium-sized conventional equipment and large high-load industrial vibration-type assist motors; in addition, most of the existing solutions are one-time nitrogen filling before leaving the factory, without independent gas replenishment interfaces, so nitrogen cannot be replenished in the later stage, and the protection effect decreases after the cavity pressure attenuates over time; when large and medium-sized vibration motors run at high load for a long time, the electromagnetic heating of the coils superimposes the additional heat generated by the high-speed rotation of the counterweights, the static nitrogen itself accumulates heat seriously, and there is no external circulating cooling pipeline to continuously take away the internal heat, so the problem of heat accumulation in the inner cavity remains prominent; when large and medium-sized vibration assist motors run at high load for a long time, the static nitrogen continues to heat up after absorbing the heat from the coils and the counterweights, there is no external nitrogen pipeline circulating cooling structure and no special pipeline cooling fan, relying only on the natural heat dissipation of the outer shell, resulting in an extremely high failure rate of burnt counterweights and coils.

[0005] Taking the vibration motor matched with a concrete screed as an example, the equipment is in an outdoor wet cement environment for a long time, the coils inside the sealed housing continuously generate electromagnetic heat, the high-speed rotation of the counterweights superimposes frictional heat generation, and the heat in the inner cavity continues to accumulate, which is very likely to cause coil burnout and counterweight deformation, and frequent replacement delays construction; the construction environment of such equipment contains a large amount of water vapor and cement slurry, so the matched vibration-type assist motor must adopt a fully sealed waterproof structure to prevent liquid water and cement slurry from invading the interior and causing short circuit damage. However, the fully sealed structure also brings a serious heat dissipation problem: when the vibration motor works continuously for a long time, the electromagnetic heat of the coils and the frictional heat of the counterweights inside the closed cavity cannot be dissipated outward, and the inner cavity continues to accumulate heat under working conditions with an ambient temperature above 30℃, the temperature rise speed is fast, and failures such as coil overheating burnout and insulation layer aging failure are very prone to occur, greatly shortening the service life of the equipment. Replacing the vibration-type assist motor at the construction site not only increases the cost, but also delays the construction progress, resulting in resource waste and increased energy consumption.

[0006] Various vibration-assist beds, assist chairs and small physiotherapy assist motors have narrow installation spaces, insufficient heat dissipation space for the counterweights at both ends, the electromagnetic heating of the coils superimposes the heat generated by long-term low-frequency rotational friction of the counterweights, the temperature rise exceeds the standard, and the failure rate of the apparatus is high. Similar problems also exist in other application scenarios: when the vibration motor works continuously for a long time, the heat generated by the coils and counterweights inside the closed cavity cannot be dissipated outward, and the continuous high temperature will accelerate the insulation aging of the coils and reduce the operation stability of the vibration-type assist motor. Under high humidity and high corrosion working conditions, the sealed housing still has a trace amount of water vapor penetration, and the internal components are prone to oxidation and rust.

[0007] The applicant has prior patents related to heat dissipation and nitrogen protection for vibration motors. These prior patents primarily protect finished vibration-assisted motors with integrated, newly manufactured, natively integrated heat dissipation structures or nitrogen-protected chambers. Currently, the industry lacks standardized complete sets of components that can not only upgrade existing sealed vibration motors on the market but also directly mass-produce and assemble new vibration-assisted motors. There is a lack of flexibility in choosing between open-air cooling modifications and sealed nitrogen protection modifications, especially for specialized modification solutions for concrete leveling tools that require both waterproof sealing and heat accumulation solutions, indicating a significant technological gap. Existing air-cooling retrofit solutions on the market cannot achieve deep heat dissipation by forcing airflow through the internal structure. They lack a dedicated architecture that uses a locking hinge-type double-box casing to force airflow into the structure in a directional manner. As a result, heat dissipation efficiency remains at the surface heat exchange level and cannot reach the core heat-generating areas of the coils and counterweights. Existing nitrogen solutions on the market lack differentiated configurations of various types of gas storage containers. There are no gas storage pipes, gas cylinders, gas tanks, or other gas storage containers available in various specifications. Large and medium-sized vibration assist motors lack an external circulating cooling architecture for nitrogen pipelines. Relying solely on static nitrogen cannot remove the heat continuously generated by the coils and counterweights, and the problem of heat accumulation during long-term high-load operation remains unresolved. Furthermore, existing solutions do not cover all specifications and are difficult to adapt to the general retrofit requirements of large, medium, and small vibration motors.

[0008] The applicant's prior patent only protects the integrated vibration motor as a whole, without any later modification components, two fan assembly methods, or a redirected airflow duct, which is clearly different from this invention.

[0009] Meanwhile, from the perspective of green and low-carbon development, improving the heat dissipation efficiency of the vibration-assisted motor, removing the heat generated by the coil and counterweight, and extending the service life of the vibration motor can reduce the frequency of equipment scrapping and replacement, reduce carbon emissions and resource consumption in the production and waste disposal process, and have significant energy-saving and emission-reduction benefits. Summary of the Invention

[0010] The purpose of this invention is to provide a universal vibration-type sealed motor upgrade and modification component and its improved usage method, which solves the problems of electromagnetic heating of coils, heat accumulation due to friction of high-speed rotation of counterweights, and corrosion and aging of components in various vibration boosters, assistive beds, assistive chairs, and industrial equipment. This component can be used to upgrade existing equipment on the market or to be shipped with new machines. It is compatible with large, medium, and small vibration-type assistive motors of all sizes, and features two air-cooled fan assembly structures, a nitrogen-based system, and an advanced system for large and medium-sized pipeline circulation.

[0011] The core vibration generation principle of this vibration motor is as follows: elliptical and semi-elliptical eccentric counterweight sliders are arranged in pairs at both ends of the main shaft. After the motor is powered on, the coil core generates electromagnetic force to drive the main shaft to rotate. The center of gravity of the counterweight shifts, continuously forming centrifugal weightlessness, and the whole machine generates stable high-frequency vibration. The heat generated by the motor operation is divided into two parts: one is the basic heat generated by the electromagnetic conversion of the coil and the iron core, and the other is the additional local high temperature caused by the friction and vibration of the counterweight as it rotates at high speed with the main shaft. This invention specifically designs a directional through-flow air duct for both types of heat sources to achieve synchronous and dedicated heat dissipation for the coil and the counterweight.

[0012] This invention possesses multiple substantial innovations compared to existing vibration motors and prior complete machine patents on the market, with its core novelty manifested in the following dimensions: 1. Innovative Transformation Logic: Existing solutions in the industry all revolve around the integrated design of the new vibration-assisted motor for heat dissipation or protection structure. This invention is the first to propose a standardized retrofit upgrade approach for existing finished sealed vibration motors on the market. It does not require replacing the entire vibration motor. It can simultaneously dissipate the electromagnetic heat of the coil and the additional heat from the friction of the counterweight by simply using an external kit, thereby achieving a leapfrog improvement in heat dissipation and protection performance. 2. Dual heat source precision heat dissipation innovation: For the first time, the airflow channel is designed to simultaneously target the core heat source of the motor, the coil core, and the additional high-temperature source, the eccentric counterweight. The forced airflow passes through the core between the left and right counterweights, simultaneously removing the electromagnetic heat and the heat generated by the friction of the counterweights, solving the defect of the market that only blows heat from the outer shell, coil, and counterweight, which continuously accumulates heat. 3. Innovative Dual-Fan Assembly Structure: Two air-cooled installation options are provided. Option 1 does not change the spindle length and directly installs fans on the inside and outside of the original counterweight. Option 2 extends the spindle to the front / rear end and adds one or two sets of fans to the front and rear of the counterweight, which can be adapted to different installation spaces for small assistive devices and large industrial vibration motors. 4. Universal and Adaptable Innovation: Existing modification solutions have limited specifications and narrow compatibility. The components of this invention cover a full range of large, medium and small sealed vibration-type assistive motors, and each specification is equipped with a corresponding size modification kit, realizing universal improvement and modification of all power levels and all external dimensions, greatly improving versatility; one set of components is compatible with all large, medium and small vibration motors in industrial, physiotherapy assistive beds, assistive chairs and small vibration assistive devices. 5. Dual-route architecture innovation: Existing technologies either use a single passive heat dissipation shell or a single water-cooling enclosure. This invention clearly distinguishes two independent technical routes: open-type forced convection air cooling and closed-type nitrogen inert protection. The basic versions are not interchangeable and can be flexibly selected as needed. 6. Innovative Air-Cooled Airflow Guiding Structure: Existing air-cooling solutions on the market only allow airflow to brush the surface of the outer shell and cannot enter the core mechanism. This invention adopts a locking hinge-type double inner box shell structure. The hinges are connected and locked together. A guide groove is set on the inner side of the shell. The airflow generated by the fan is completely constrained and forced into the vibrating motor core mechanism by the guide groove. This forms a complete through-flow convection from the air inlet to the core mechanism to the air outlet. It simultaneously washes the two heat-generating parts, the coil and the counterweight, achieving deep heat dissipation from the source and completely solving the common industry problems of surface heat dissipation and low efficiency in existing technologies. Innovative Locking Plastic Shell Airflow Guiding Structure: The upper and lower hinges lock together the plastic shell, which has ventilation holes and guide grooves to constrain the fan airflow and directionally wash the coil and the eccentric counterweight. 7. Innovative Multi-Form Nitrogen Storage: Existing nitrogen storage solutions have a single structure. This invention's external storage container includes various forms such as a storage capsule, storage tube, storage cylinder, and storage tank. The materials cover butyl rubber and various flexible plastics, rigid plastics, and sealing metals. It can be flexibly selected according to the size of the vibration motor, installation space, and working load. Large, medium, and small vibration-type assist motors are matched with corresponding capacity levels to achieve differentiated and precise adaptation. Innovative differentiated nitrogen storage configuration: The storage capsule / tube / cylinder / tank has multiple materials and volumes, matching different sizes of vibration motors. The three interfaces allow for later nitrogen replenishment. It maintains a stable micro-positive pressure in the cavity for a long time and prevents water vapor from corroding the coil and counterweight. 8. Nitrogen Three-Interface and Micro Positive Pressure Innovation: Most existing solutions are one-time nitrogen filling without subsequent maintenance. This invention is equipped with three interfaces: inlet, outlet and independent gas replenishment. The independent gas replenishment interface supports continuous nitrogen replenishment in the later stage, maintains the stable micro positive pressure of the cavity for a long time, and ensures the long-lasting and effective nitrogen protection effect. 9. Unique External Circulation Cooling Architecture for Large and Medium-Sized Nitrogen Pipelines: Existing nitrogen solutions for large and medium-sized vibration-type booster motors lack circulating cooling. The electromagnetic heat of the coil combined with the frictional heat of the counterweight causes severe heat accumulation in static nitrogen. This invention introduces separate nitrogen circulation inlet and outlet pipelines, with a cooling fan and heat sink placed only between the two pipelines. The fan specifically forces the high-temperature nitrogen flowing through the pipeline to cool down. The cooled nitrogen then flows back into the vibration motor cavity for continuous heat exchange, without blowing on the vibrating booster motor casing. This eliminates the dual heat accumulation of the coil and counterweight at the source, solving the problem of static nitrogen heat accumulation. Unique External Nitrogen Pipeline Cooling Architecture for Large and Medium-Sized Motors: Only the high-temperature medium inside the nitrogen pipeline is air-cooled, without blowing on the vibration motor casing. This continuously removes the heat conducted by the coil and counterweight, solving the problem of static nitrogen heat accumulation. 10. Energy consumption optimization and innovation: By using forced air cooling or nitrogen constant temperature synchronous cooling to remove the electromagnetic heat of the coil and the additional heat of the counterweight, the thermal resistance of the winding is reduced from the source, the electromagnetic conversion efficiency is improved, and the energy consumption is significantly reduced under the same output power, which is suitable for the long-term continuous operation requirements of medium and high power vibration motors in all AC and DC power supply scenarios. 11. Two-way innovation in transformation mode: It is not a complete machine, but a standardized component that can be installed later. Existing vibration-assisted beds, chairs, and industrial vibration motors can all be modified on-site, and new machines can also be pre-installed.

[0013] The above eleven innovations constitute the substantial difference between this invention and the prior art, and possess outstanding technical features and significant progress.

[0014] The applicant's prior patent applications primarily protect vibratory assist motors that are integrally molded, have built-in heat dissipation structures, or nitrogen-protected chambers. These are clearly distinguishable from prior patents. First, the product positioning is different: the prior patent protects the brand-new vibration motor that is fully manufactured; this invention protects standardized supporting components, which are produced independently and then assembled into the main body of the vibration-type assist motor, and are used to upgrade and transform existing equipment in the market.

[0015] Second, the implementation paths are different: the previous solution was to manufacture the entire vibration motor as a whole; this solution has highly versatile components, which can not only modify existing vibration-type booster motors on-site, but also be assembled on new production lines, making the application modes more diverse.

[0016] Third, the technical roadmap architecture is different: the prior solution integrates the heat dissipation and protection structure with the vibration motor housing; this invention clearly distinguishes two independent modification routes: open air cooling and closed nitrogen protection. The basic versions are not interchangeable, and an advanced solution with external circulation heat dissipation for large and medium-sized nitrogen pipelines is provided. A dedicated nitrogen constant temperature solution is also provided for waterproof and sealed equipment such as concrete leveling tools; the prior solution does not have two fan assembly methods, nor does it have a directional airflow duct with synchronous coverage coils and counterweights.

[0017] Fourth, the air storage configuration is different: the previous solution has an integrated design of the air storage structure and the vibration-type booster motor, with fixed specifications; this solution has an external air storage container that includes air bladders, air pipes, air cylinders, and air tanks in various forms and materials, which can be flexibly selected according to the specifications of the vibration motor.

[0018] This invention complements prior patents, expanding the application of heat dissipation and protection technologies for vibration-assisted motors.

[0019] To achieve the above objectives, the present invention adopts the following technical solution: A universal vibration-type enclosed motor upgrade and retrofit kit includes an open-type air-cooled retrofit kit and a closed-type nitrogen protection retrofit kit. The basic versions of the two kits can be selected independently and are not interchangeable. The kit is designed for upgrading existing equipment on the market and can also be shipped with new machines. It is compatible with the modification and retrofit of large, medium and small enclosed vibration-type assist motors of all sizes, and each size of vibration motor is equipped with a corresponding size retrofit kit.

[0020] The open-type air-cooled retrofit kit includes a spindle extension kit, a cooling fan kit, and a housing modification kit.

[0021] The spindle extension kit is used to extend the original spindle length of a sealed vibration motor. It includes two configurations: single-sided extension section and double-sided extension section. The extension section is coaxially connected and fixed to the original spindle of the vibration assist motor. The dimensions of the extension section match the diameter of the vibration motor spindle, covering large, medium, and small sizes of vibration assist motors.

[0022] The cooling fan kit includes one or two sets of fan blades and is available in two assembly configurations: Form 1 (Short Axis Original Solution): No need to lengthen the main shaft, it can be directly installed on the inside or outside of the eccentric counterweight slider at both ends of the vibration motor; Option 2 (Extended Shaft Solution): The main shaft extends to the front and rear ends, and one or two cooling fans are installed on the front and rear sides of the eccentric counterweight slider; The fan blades are fixed in the corresponding installation position and generate cooling airflow by rotating synchronously under the power of the vibration motor itself, without the need for an external power source. The fan diameter corresponds to the housing size of the vibration-assisted motor, and large, medium, and small vibration motors are matched with corresponding fan blades.

[0023] The housing modification kit includes a ventilation opening structure, an axially extended housing, and various sizes of custom-shaped housings. The ventilation opening structure directly creates air inlet and outlet channels in the existing vibration motor housing. The extended housing is lengthened axially and has internal airflow channels. The custom-shaped housing is tailored to the equipment installation space, creating a through-type open air-cooling channel in conjunction with the fan. The housing modification kit covers all sizes of large, medium, and small vibration-type power assist motor housings.

[0024] The shell modification kit adopts a locking hinge double inner box structure design, consisting of two halves of the inner box shell connected by hinges, and equipped with locking buckles to achieve enclosed locking. After the two halves of the shell are enclosed and locked, a fixed interlayer space is formed inside. The interlayer has reserved standardized air ducts, air tunnels, and air holes. All air passages are completely enclosed and limited by the locking shell, with no air leakage and no displacement. The inner side of the shell is integrally formed with a guide groove. The high-pressure airflow generated by the fan rotation is completely constrained and forced back by the guide groove, preventing it from overflowing to the outside of the shell. Instead, it is all directed into the internal core cavity of the vibration-type booster motor, forming a complete forced convection circulation. The housing serves three functions: first, it locks and secures the base, with a hinge and latch structure enclosing and locking the vibration motor body and sealing the interlayer air duct; second, it acts as the main air inlet carrier, with an integrated main air inlet and outlet, providing the sole entry and exit channel for airflow; and third, it serves as a guide and baffle carrier, with raised baffles on the inner side blocking airflow bypass routes, forcing all airflow through the vibration-assisted motor coil and the dual-heating core area of ​​the counterweight, preventing short-circuit airflow. This locking hinge dual-box guide architecture is compatible with large, medium, and small sealed vibration motors, and is uniformly fitted regardless of model size, with each size matched with a corresponding dual-box housing.

[0025] The complete airflow circulation path is as follows: external cold air → main air inlet → pre-reserved wind tunnel duct in the shell interlayer → forced reverse flow through the guide groove → fully heat exchange in all heating areas of the motor core coil and iron core between the eccentric counterweight sliders on both sides, and simultaneously flush away the additional heat from rotational friction of the counterweights → hot air after the core absorbs heat and heats up → discharged outward through the main air outlet, forming a unidirectional forced through-circulation airflow path.

[0026] The open-air cooling system breaks the heat accumulation effect of the sealed cavity at its source by creating air inlet and outlet holes in the vibration motor housing and using a spindle-driven fan to form forced convection. The airflow continuously flows through the inner cavity, simultaneously scouring the coil core and the elliptical counterweights at both ends. This removes the basic heat generated by the electromagnetic conversion of the coil and the local high temperature generated by the rotational friction of the counterweights from the outside of the vibration-type power assist motor housing in real time, keeping the inner cavity temperature within a safe range. This completely eliminates the risk of insulation breakdown, coil burnout, and even fire caused by heat accumulation from two heat sources. At the same time, the continuous airflow sweeps the inner cavity surface, suppressing moisture condensation and dust deposition, and slowing down the corrosion rate of internal metal components. After the winding temperature stabilizes, the resistance value remains constant, and the electromagnetic conversion efficiency remains high. Under the same output power, the power consumption is significantly reduced, achieving the dual benefits of cost reduction and energy saving.

[0027] The sealed nitrogen protection retrofit kit includes an external gas storage container and a gas filling interface. Only a few nitrogen filling holes are opened in the housing of the vibration-type booster motor. The gas storage container is connected to the inner cavity of the vibration motor through the nitrogen filling holes to form a fully sealed micro-positive pressure nitrogen protection cavity.

[0028] External gas storage containers come in various forms, including gas capsules, gas pipes, gas cylinders, and gas tanks, and are made of materials such as butyl rubber, various flexible plastics, rigid plastics, and sealed metals. Their dimensions, volume, and cross-sectional shape can be flexibly configured to suit different vibration motor specifications, installation spaces, and operating loads. Large, medium, and small vibration-type assist motors are equipped with corresponding capacity gas storage containers to ensure that the nitrogen reserve matches the volume of the vibration motor cavity. The gas storage container has three interfaces: an inlet interface, an outlet interface, and an independent replenishment interface. The inlet interface is used for initial nitrogen filling and nitrogen circulation, the outlet interface is used to displace and expel the existing air in the vibration motor cavity, and the independent replenishment interface is equipped with a push-button inflation valve for replenishing nitrogen during later operation and maintaining a stable slight positive pressure in the cavity. The vibration-type assist motor cavity and the external gas storage container together form a fully enclosed nitrogen circulation protection space. The nitrogen environment can balance the temperature rise of the coil and counterweight, delay the oxidation and aging of the coil and metal components, and isolate moisture and corrosive media.

[0029] Additional notes: The above three interface configurations are a standardized configuration scheme. The air inlet and outlet ensure nitrogen filling and cavity replacement flow, and the independent air replenishment port is specially set up for later maintenance nitrogen replenishment. The number of interfaces and their functions are clearly defined, adapting to the nitrogen protection modification needs of various specifications of vibration motors.

[0030] After nitrogen is injected into the cavity, it forms a comprehensive inert gas protective barrier, simultaneously delivering multiple benefits: In terms of temperature control and heat dissipation, nitrogen possesses excellent thermal conductivity and stability. After filling the cavity, it evenly fills all internal gaps, completely enveloping the coil, iron core, and eccentric counterweight sliders at both ends. It simultaneously absorbs the electromagnetic heat generated by the coil and the frictional heat from the rotation of the counterweights, forming a natural circulation within the cavity. This maintains a balanced temperature throughout the vibration-assisted motor, eliminating localized hotspots in the coil and counterweights, and significantly reducing the overall temperature rise. In terms of oxidation resistance, nitrogen's highly stable chemical properties, after replacing the original air in the cavity, reduce the oxygen content to extremely low levels, protecting components such as the coil enameled wire, the silicon steel sheet of the iron core, the iron weight, and metal fasteners. When components lose the conditions for oxidation reaction, the rate of oxidation and corrosion approaches zero, and the aging process of the insulation layer is significantly slowed down. In terms of resistance to electrical shock attenuation, nitrogen is an excellent insulating medium. After the cavity is filled with nitrogen, the insulation strength between the winding and the shell is significantly improved, effectively suppressing electrical attenuation phenomena such as inter-turn discharge and corona corrosion, and preventing the insulation layer from gradually deteriorating and breaking down due to partial discharge. In terms of corrosion prevention, the nitrogen environment isolates the intrusion paths of external water vapor, salt spray, and corrosive gases. The internal metal surface of the vibration motor is always in a dry and inert atmosphere. Moving parts such as bearings, shafts, iron cores, and counterweight blocks never rust. The grease remains stable for a long time, and the mechanical performance of the vibration-type assist motor does not decrease over a long period of time. The counterweight weight is stable, and the vibration effect is long-lasting and does not decrease.

[0031] For large and medium-sized high-load industrial vibratory motors, an advanced configuration with external nitrogen circulation cooling is implemented: separate nitrogen circulation inlet and outlet pipes are led out, and a cooling fan and matching heat sink are installed between the two pipes; all heat sources of the vibratory motor are concentrated in the internal coil and iron core, and the high-speed rotation of the main shaft driving the counterweight generates additional frictional high temperature, while the temperature rise of the outer shell is extremely low; the high-temperature nitrogen absorbs the electromagnetic heat of the core and the frictional heat of the counterweight simultaneously and flows out along the outlet pipe. When it flows through the heat sink, the cooling fan only directs forced air cooling on the high-temperature nitrogen flowing inside the pipe, and the cooled nitrogen flows back to the sealed cavity of the vibratory motor along the inlet pipe for continuous heat exchange; the entire nitrogen circulation pipe is completely isolated from the sealed cavity of the vibratory motor, without disrupting the slightly positive pressure seal of the cavity, and the cooling fan does not directly blow on the main shell of the vibratory motor throughout the process, specifically solving the problem of static nitrogen heat storage and continuous heat accumulation in the inner cavity caused by the dual heat generation of the coil and counterweight during long-term high-load operation of large and medium-sized vibratory motors.

[0032] For equipment such as concrete leveling tools that must remain waterproof and sealed, a sealed nitrogen protection retrofit kit provides a specialized solution: it retains the original waterproof and sealed structure of the vibratory motor housing, with only a few nitrogen-filling holes. After filling with nitrogen, the thermal stability of nitrogen is used to balance the temperature rise of the coil and counterweight, solving the problem of heat accumulation from two heat sources in the sealed structure. At the same time, the nitrogen environment can isolate trace amounts of moisture, prevent internal components from corroding, and extend the service life of the vibratory motor in humid and dusty construction environments.

[0033] The complete upgrade and modification components are compatible with AC and DC power supply systems and different voltage specifications of sealed vibration motors; application scenarios cover industrial screening equipment, concrete scraping devices, vibration cleaning machinery, medical physiotherapy equipment, vibration-assisted massagers, vibration-assisted beds, vibration-assisted chairs, various vibration-assisted devices, and sports-assisted training equipment.

[0034] An improved method for using a general-purpose vibration-type sealed motor includes the following steps: Step 1: Based on the power supply specifications, working environment, and equipment type (vibration booster, assistive bed, assistive chair, etc.) of the sealed vibration-type assistive motor, select either an open air-cooling route or a sealed nitrogen protection route; for large and medium-sized industrial applications, an advanced combination solution with external nitrogen pipeline circulation cooling can be selected; the components can be used for retrofitting existing vibration motors or directly assembled in the production of new machines; for vibration motors of different sizes (large, medium, and small), select the corresponding size and specifications of the retrofit kit and match the corresponding shape, material, and volume of the external gas storage container; flexible gas storage capsules and short gas storage pipes are suitable for small and confined equipment, rigid plastic gas storage pipes and gas storage cylinders are selected for medium-sized conventional equipment, and large-capacity sealed gas storage tanks are matched for large high-load industrial vibration motors; Step Two: When using an open-air cooling system, two fan assembly schemes are implemented. Scheme One involves installing cooling fans directly on the inner and outer sides of the eccentric counterweight sliders at both ends without extending the spindle. Two locking plastic housings are then assembled, with ventilation holes in the housings guiding airflow through the coil core and counterweights. Scheme Two uses a spindle extension kit to extend the vibration motor spindle at the front and rear ends, and assembles one or two sets of cooling fan kits on the front and rear sides of the eccentric counterweight sliders. An open-air cooling duct is then constructed using a housing modification kit. When using a double-box housing with locking hinges, connect the two halves of the inner box to the vibrating motor body using the hinges, and secure them with locking buckles. Confirm that the airflow guide groove is aligned with the fan position and that the main air inlet and main air outlet are in the correct directions to form a complete reverse-flow airflow path. The open-type air-cooling route is divided into three levels: the first level is a simple air-cooling modification on one side, the second level is an air-cooling modification with extended main shafts at both ends to extend the housing depth, and the third level is an air-cooling modification for irregularly shaped housings. All three levels of solutions are compatible with large, medium, and small vibration assist motors. Step 3: When selecting a closed-loop nitrogen protection route, a few nitrogen-filling holes are made in the motor housing of the vibration motor. An external gas storage container is installed, and nitrogen is filled into the motor cavity and the gas storage container through the air inlet. The air outlet helps to displace and expel air from the cavity, forming a fully enclosed micro-positive pressure protection space to balance the temperature rise of the coil and counterweight. During later operation, nitrogen is replenished as needed through an independent gas replenishment interface. The volume of the gas storage container is matched with the vibration motor cavity. Step 4: When using an advanced circulation cooling solution in large and medium-sized industrial applications, connect the nitrogen circulation inlet and outlet pipelines, and install a pipeline cooling fan and heat sink between the two pipelines; the fan only forces the high-temperature nitrogen inside the pipeline to cool, without contacting the vibrating motor housing. After cooling, the low-temperature nitrogen flows back into the vibrating motor cavity to continuously carry away the heat from the coil and counterweight for circulation heat exchange. Step 5: After assembly, power on and test run to check the heat dissipation effect of the coil and eccentric counterweight area or the airtightness of the cavity; for large and medium-sized advanced solutions, simultaneously test the nitrogen cooling efficiency of the pipeline and the integrity of the micro-positive pressure seal of the vibration motor cavity.

[0035] The open-type air-cooling approach is divided into three levels: the first level is a simple single-sided air-cooling modification; the second level is an air-cooling modification that extends the main shaft at both ends to accommodate a deeper air-cooling system; and the third level is an air-cooling modification to accommodate irregularly shaped shells. All three levels are compatible with large, medium, and small vibration-type assist motors.

[0036] When the sealed nitrogen protection circuit is applied to concrete leveling, the original waterproof and sealed structure of the vibratory motor is retained, and only a nitrogen filling hole is opened. After nitrogen is filled, the temperature rise generated by the operation of the balance coil and the eccentric counterweight is balanced, while preventing water vapor and cement slurry from entering the vibratory motor. Beneficial effects of this invention

[0037] The implementation mode is compatible in both directions: the components can be used to modify existing sealed vibration motors on-site, or to mass-produce new vibration-assisted motors to complete the machine, thus expanding the commercial application channels; it can upgrade existing equipment in the market without replacing the whole machine, with low modification cost and fast implementation.

[0038] Universal compatibility across all specifications: The components cover a full range of large, medium and small sealed vibration-assisted motors, and each power level and size is equipped with a corresponding modification kit, achieving universal modification across all specifications. Its versatility is significantly better than existing single-specification modification solutions; Compatible with all types of vibration equipment: Unified modification of industrial vibration motors, vibration boosters, assistive beds, assistive chairs and various vibration assistive devices, applicable to all sizes.

[0039] Multiple configurations of gas storage containers: External gas storage containers include various forms such as gas storage capsules, gas storage pipes, gas storage cylinders, and gas storage tanks. The materials cover butyl rubber and various flexible plastics, rigid plastics, and sealing metals. They can be flexibly selected according to the size of the vibration motor, installation space, and working load. Large, medium, and small vibration-type assist motors are matched with corresponding capacity levels to achieve precise and differentiated adaptation, solving the industry shortcomings of existing gas storage solutions that are single in structure and cannot match vibration motors of all specifications.

[0040] Wide range of applications: Compatible with AC and DC voltage specifications of sealed vibration-assisted motors, covering a wide range of high-frequency vibration equipment such as industrial screening, construction, concrete leveling, vibration cleaning, medical physiotherapy, vibration-assisted massage, vibration-assisted beds, vibration-assisted chairs, various vibration-assisted devices, and sports-assisted training.

[0041] The dual-path design has clear boundaries and the basic schemes are not interchangeable: the open-air cooling path has a built-in fan and a through-hole ventilation system to simultaneously dissipate the electromagnetic heat of the coil and the frictional heat of the counterweight; the sealed nitrogen protection path maintains the cavity seal and relies on the nitrogen environment to balance the temperature rise of the coil and counterweight and delay oxidation, resulting in a clear structural logic.

[0042] The dedicated solution for concrete leveling tools precisely addresses industry pain points: Addressing the rigid requirement for waterproof and airtight concrete leveling tools, this solution, without compromising the waterproof performance of the vibration motor housing, utilizes nitrogen injection to balance the coil and counterweight as dual heat sources for temperature rise. Simultaneously, it isolates the coil from moisture and cement slurry erosion, fundamentally solving the industry problem of simultaneous heat accumulation and burnout of the coil and counterweight in sealed vibration-type assist motors.

[0043] The unique architecture of external circulation cooling for large and medium-sized nitrogen pipelines: all the heat of the vibration motor is generated by the electromagnetic conversion of the internal coil core and the high-speed rotation friction of the counterweights at both ends, resulting in extremely low temperature rise of the outer shell; this solution does not blow the outer shell of the vibration-type booster motor, but only uses a fan to force-cool the high-temperature nitrogen in the nitrogen circulation pipeline, and the low-temperature nitrogen continuously flows back into the inner cavity to simultaneously remove the heat from both heat sources, eliminating the problem of nitrogen heat accumulation and double heat accumulation in the inner cavity under long-term high-load operation of large and medium-sized vibration motors from the root, and greatly reducing the probability of coil high-temperature burnout and insulation breakdown failure.

[0044] The locking hinge dual-box forced airflow architecture provides deep heat dissipation: The shell adopts a hinge docking + locking structure, with an integrated airflow guide groove on the inner side. The fan airflow is completely constrained and forced, and all of it is directed into the interior of the vibration-type booster motor core, forming a complete through-flow convection from the air inlet to the core coil and counterweight heating area to the air outlet. Unlike existing air-cooling solutions on the market that only blow on the surface of the shell for shallow heat dissipation, this architecture allows airflow to pass directly through the two core heating components—coil, iron core, and counterweight—simultaneously carrying away dual heat, eliminating dual heat accumulation in the vibration motor cavity from the root, greatly improving heat dissipation efficiency, and completely eliminating deep-seated hidden dangers such as local high temperature, fire, and insulation aging. This architecture is compatible with large, medium, and small vibration-type booster motors. The locking structure simultaneously undertakes the triple functions of fixing, guiding airflow, and air outlet, with a simple structure, convenient assembly, and significant effect.

[0045] Dual-fan assembly solution adapts to different installation spaces: massage assist beds / chairs use counterweight-mounted fans to simultaneously cool the coil and counterweight; large industrial vibration motors use multiple fans with extended front and rear spindles for flexible modification; specifically designed for directional airflow cooling of the coil and counterweight dual heat sources: the locked plastic shell forces airflow through the mechanism between the counterweights at both ends, simultaneously removing the electromagnetic heat of the coil and the frictional heat of the counterweight, solving the pain points of only blowing the outer shell, coil burnout, and high-temperature deformation of the counterweight in the market.

[0046] The air-cooled structure is self-driven, with the fan rotating synchronously with the main shaft of the vibration motor, consuming no additional energy. It is easy to modify and assemble, preserving the original core structure and counterweight components of the vibration-type power-assisted motor to the greatest extent possible, requiring only external components. Existing power-assisted beds and chairs can be modified on-site at low cost.

[0047] The nitrogen protection system is equipped with an expandable external gas storage container and a three-port configuration. The inlet and outlet ensure the initial nitrogen replacement flow, while the independent gas replenishment port supports continuous nitrogen replenishment and maintenance in the later stage, maintaining a stable micro-positive pressure in the cavity over the long term. The gas storage container is available in a variety of materials and shapes, and its size and shape can be flexibly configured as needed. It is suitable for high humidity and corrosive working conditions, and delays the oxidation and aging of components such as the vibration-type booster motor coil and counterweight.

[0048] Forced air cooling completely eliminates the risk of heat accumulation from dual heat sources: The open air cooling route constructs a through-type forced convection channel, and the airflow simultaneously carries away the heat generated by the coil and counterweight, keeping the internal temperature within a safe range. This completely eliminates the risk of insulation breakdown, coil burnout, and even fire caused by dual heat accumulation, significantly improving the level of operational safety. At the same time, the flowing airflow continuously sweeps through the internal cavity, suppressing moisture condensation and dust deposition, and slowing down the internal corrosion process of the vibration-type assist motor.

[0049] Nitrogen protection offers multiple benefits simultaneously: After nitrogen is injected into the vibration motor cavity, it forms an all-round inert protective barrier, which eliminates local hot spots in the coil and counterweight by maintaining a constant and balanced heat dissipation, resists oxidation and delays the aging of the coil insulation layer, resists electric shock, improves insulation strength and inhibits corona decay, and prevents rust and water vapor and salt spray corrosion. With the synergistic effect of four protections, the internal components of the vibration-assisted motor are always in a stable inert environment, and the service life is extended many times over. The nitrogen micro-positive pressure cavity completely wraps the coil and counterweight, balances the temperature rise in the two places, isolates water vapor, prevents oxidation and rust of the counterweight iron block and iron core, and extends the vibration motor's vibration service life.

[0050] Significant energy-saving, emission-reduction, carbon-reduction, and consumption-reducing benefits: By synchronously dissipating the electromagnetic heat of the coil and the additional heat from the friction of the counterweight to eliminate internal heat accumulation, the electromagnetic conversion efficiency of the vibration motor remains high, and the energy consumption is significantly reduced under the same output power; it is suitable for all AC and DC power supply scenarios, and the drag effect of temperature rise on efficiency is completely eliminated, supporting the long-term continuous and stable operation of the vibration-type assist motor under medium and high power conditions, with energy consumption levels significantly better than existing sealed vibration motors; at the same time, the service life of the vibration motor is extended, reducing the frequency of scrapping and replacement, and reducing resource consumption and carbon emissions throughout the entire life cycle of production, transportation, and waste disposal, demonstrating clear energy-saving, emission-reduction, carbon-reduction, and consumption-reducing benefits, which is in line with the development direction of green technology.

[0051] The renovation does not require replacing the original vibration motor and counterweight structure, but only external components. Existing assisted beds and chairs can be retrofitted on-site at low cost. The air-cooled self-drive system consumes no extra power, stabilizes the coil and counterweight temperature, reduces winding resistance, and consumes less energy for the same vibration output. There is no double heat accumulation during long-term medium and high power operation, which saves energy, reduces emissions, and reduces equipment scrap.

[0052] By analogy, the entire dual-circuit modification approach is like traditional Chinese medicine's diagnostic and treatment methods: for conventional continuous heat-generating conditions, a ventilation and heat dissipation scheme is used, corresponding to an open air-cooling circuit, with openings to guide airflow and simultaneously expel heat from the coil and counterweight; for humid and corrosive harsh conditions, a sealed protection scheme is used, corresponding to a sealed nitrogen protection circuit, with nitrogen filling for protection, isolating external pathogens, and balancing the temperature rise of the two heat sources; for special conditions such as concrete leveling tools, which require both waterproofing and heat dissipation, a sealed protection method is used to regulate the internal temperature rise, preventing external waterproofing and simultaneously balancing the heat from the coil and counterweight; for large and medium-sized high-load complex conditions, both internal and external measures are taken into account, with internal nitrogen sealed protection and external pipeline circulation heat dissipation, achieving site-specific and graded implementation; for small assistive motors, the counterweight is directly cooled by air to simultaneously remove heat from the coil and counterweight; for conventional assistive beds and chairs, nitrogen is used to wrap the coil and counterweight for constant temperature and rust prevention; for large industrial vibration motors, nitrogen internal circulation + external pipeline cooling is used to continuously remove electromagnetic heat from the coil and additional frictional heat from the counterweight. Attached Figure Description

[0053] Figure 1 is a schematic diagram of the assembly and modification of the main body of the sealed vibration motor. Figure 2 is a schematic diagram of the open-type air-cooled short-shaft counterweight direct-mount fan modification component; Figure 3 is a schematic diagram of the double-shell outer shell assembly with upper and lower covers. The interior of the shell is arranged with air-cooling channels and nitrogen-sealed flow channels. Figure 4 is a schematic diagram of an advanced configuration for external nitrogen circulation cooling of large and medium-sized industrial vibration motors. Figure Labels

[0054] 1 - Sealed vibration motor body, 2 - Power cord, 3 - Eccentric counterweight slider (elliptical / semi-elliptical counterweight block), 4 - Spindle extension kit, 5 - Cooling fan kit, 6 - Housing modification kit, 7 - Sealed nitrogen protection kit, 7a - Gas reservoir, 7b - Gas pipe, 7c - Gas cylinder, 7d - Gas tank, 7e - Air inlet, 7f - Air outlet, 7g - Independent gas replenishment interface, 8 - Ventilation hole, 9 - Bolt fixing port, 10 - Hinge connection structure, 11 - Locking buckle, 12 - Air guide groove, 13 - Main air inlet, 14 - Main air outlet, 15 - First housing, 16 - Second housing, 17 - Original spindle, 18 - Main air inlet axial extension housing, 19 - Nitrogen circulation air inlet pipe, 20 - Nitrogen circulation air outlet pipe, 21 - Pipeline cooling fan, 22-nitrogen heatsink. Detailed Implementation

[0055] The present invention will now be described in further detail with reference to the accompanying drawings. Example

[0056] As shown in Figure 1, a nitrogen protection upgrade and modification component for a vibration motor includes a sealed vibration motor body (1), a power cord (2) connected to the sealed vibration motor body (1), a native spindle (17) running through the interior of the sealed vibration motor body (1), an eccentric counterweight slider (3) mounted on the native spindle (17), the eccentric counterweight slider (3) being an elliptical or semi-elliptical counterweight block; a spindle extension kit (4) connected to the end of the native spindle (17), a cooling fan kit (5) mounted on the outside of the spindle extension kit (4); the sealed vibration motor body (1) The external housing modification kit (6) is provided, and the inner side of the housing modification kit (6) is provided with a sealed nitrogen protection kit (7); the housing modification kit (6) is provided with ventilation holes (8) and bolt fixing holes (9); the housing modification kit (6) is provided with an axially extended housing (18) for the main air inlet; the housing modification kit (6) is opened and closed and sealed by a hinge docking structure (10) and a locking buckle (11); the housing modification kit (6) is provided with a flow guide groove (12) inside, and a main air inlet (13) is opened on one side of the flow guide groove (12) and a main air outlet (14) is opened on the other side.

[0057] After the motor is powered on, the internal coil and iron core drive the original spindle (17) to rotate continuously by electromagnetic force. The spindle drives the eccentric counterweight slider (3) to rotate synchronously at high speed. The electromagnetic conversion of the coil generates basic heat, and the high-speed friction and vibration of the counterweight generate additional local high temperature. The two types of heat accumulate in the closed cavity. The addition of a cooling fan kit (5) and the flow guide groove (12) form a complete air duct, which can simultaneously guide the heat of the coil and the counterweight.

[0058] As shown in Figure 2, the open-type air-cooled short-shaft counterweight direct-mount fan modification component is assembled with the sealed vibration motor body (1) relying on the shell modification kit (6). The original main shaft (17) extends outward and is directly connected to the cooling fan kit (5) through the main shaft extension kit (4). The main air inlet extends axially to the shell (18) to wrap the cooling fan kit (5). The components of the shell modification kit (6) are locked and positioned by locking buckles (11). The external airflow enters through the main air inlet (13), is guided by the guide groove (12), and simultaneously washes the internal coil and the eccentric counterweight slider (3), and finally exits from the main air outlet (14), forming an open-type air-cooled cycle, and simultaneously dissipating the electromagnetic heat generation and the additional heat from the counterweight friction.

[0059] As shown in Figure 3, the double-shell outer shell assembly includes a first shell (15) and a second shell (16); the first shell (15) and the second shell (16) are interlocked to form the main body of the shell modification kit (6); the inner walls of the first shell (15) and the second shell (16) are integrally formed with guide grooves (12), and the guide grooves (12) on the two shells are spliced ​​together to form a continuous channel; the channel is divided into two types. One type forms a wind-cooled circulation channel, through which the airflow passes through the ventilation hole (8), the main air inlet (13), and the main air outlet (14) to complete the circulation, and simultaneously passes through the coil and the counterweight heating area; the other type of channel, together with the sealing structure after the shell is interlocked, forms a nitrogen-sealed circulation channel. The nitrogen-sealed circulation channel is connected to the sealed nitrogen protection kit (7), which can fill the shell with nitrogen, balance the operating temperature rise of the coil and the counterweight, and realize the isolation and protection of various components of the motor. Working principle of this invention:

[0060] During assembly, the spindle extension kit (4) is installed on the end of the original spindle (17) to complete the installation of the cooling fan kit (5); the housing modification kit (6) is completely wrapped around the outside of the sealed vibration motor body (1), and the first housing (15) and the second housing (16) are hinged and aligned using the hinge docking structure (10). The upper and lower housings are then sealed and fastened by the locking buckle (11), and the bolt fixing port (9) is used to assist in fastening each housing component.

[0061] Motor operation heat generation logic: After the equipment is powered on, the power line (2) supplies power, and the internal coil and iron core of the motor generate electromagnetic driving force to drive the original main shaft (17) to rotate. The main shaft drives the eccentric counterweight slider (3) to rotate at high speed. The electromagnetic conversion of the coil generates basic heat, and the high-speed rotation of the counterweight and the friction and vibration superposition generate additional local high temperature. The two types of heat accumulate together in the inner cavity of the closed shell.

[0062] Air-cooled mode: Ambient air enters from the main air inlet (13), flows along the guide groove (12), and simultaneously carries away the electromagnetic heat of the coil and the frictional heat of the counterweight. Finally, it is discharged from the main air outlet (14), continuously balancing the overall working temperature of the motor and eliminating the hidden danger of double heat accumulation.

[0063] Nitrogen protection mode: Nitrogen is introduced into the nitrogen-sealed flow channel in the cavity formed by the first housing (15) and the second housing (16) through the sealed nitrogen protection kit (7), forming a nitrogen protection atmosphere around the main body (1) of the sealed vibration motor, balancing the temperature rise of the coil and the counterweight, isolating water vapor and corrosive air, and preventing oxidation and corrosion of internal metal components; the dual channels inside the first housing (15) and the second housing (16) are arranged independently, and the air-cooling channel and the nitrogen-sealed channel do not interfere with each other. They can be used independently for air-cooling heat dissipation and nitrogen protection, or they can work synchronously.

[0064] This structure is a modular upgrade and transformation scheme. It does not require modification of the internal structure of the sealed vibration motor body. The entire set of components can be directly installed on the outside of the motor to adapt to various specifications of vibration motors. The first shell (15) and the second shell (16) are easy to disassemble and assemble, and the subsequent inspection, maintenance and nitrogen replenishment operations are simple. Technical Features Summary

[0065] This invention features a novel modular external upgrade structure. Its core innovation lies in the integrated short-axis direct-mount synchronous air-cooling structure and a dual-shell, independent dual-channel layout, along with a synchronized integrated nitrogen-sealed protection system. The invention achieves coaxial linkage between the cooling fan and the eccentric counterweight through a main shaft extension kit, eliminating the need for a separate drive source and resulting in a highly integrated structure. Utilizing the independent air-cooling and nitrogen-sealed circulation channels built into the upper and lower shells, the airflow can simultaneously cover both the motor coils and the counterweight, two heat sources, achieving independent or collaborative operation of air-cooling and nitrogen-sealed protection functions without interference. The overall design requires no modification to the internal structure of the motor. Through external modular modification, it simultaneously dissipates electromagnetic heat from the coils and additional heat from the rotational friction of the counterweight, achieving a comprehensive performance upgrade in terms of constant temperature heat dissipation, dust and moisture protection, and oxidation and corrosion resistance. The novel structure, unique layout, and strong adaptability to various operating conditions demonstrate outstanding innovation and practical application value.

Claims

1. A universal vibration-type sealed motor upgrade and retrofit component, characterized in that: The system includes an open-type air-cooled retrofit kit and a closed-type nitrogen protection retrofit kit. The basic versions of the two kits can be selected independently and cannot be mixed. The upgrade and retrofit components are designed to upgrade existing closed-type vibration motors on the market, or can be assembled with brand new vibration motors for complete machine delivery. It is compatible with the improvement and retrofit of large, medium and small closed-type vibration motors, covering the upgrade needs of vibration motors of various power levels and sizes. The vibration motor relies on the centrifugal weightlessness generated by the rotation of the eccentric counterweight sliders and elliptical counterweight blocks at both ends of the main shaft to achieve high-frequency vibration of the whole machine. The open-type air-cooled retrofit kit includes a spindle extension kit, a cooling fan kit, and a housing modification kit. The housing modification kit is a two-piece plastic locking structure equipped with hinges and latches. The housing has ventilation holes and airflow channels. The cooling fan has two assembly modes: the first is to be directly assembled inside or outside the original spindle eccentric counterweight slider without changing the spindle length; the second is to extend the vibration motor spindle to the front and rear ends through the spindle extension kit, and add one or two cooling fans to the front and rear sides of the eccentric counterweight slider. The housing airflow guide groove constrains the fan airflow to force it through the eccentric counterweight slider and the motor core, forming a through-type forced convection cooling channel. The sealed nitrogen protection modification kit includes an external gas storage container and a gas filling interface. Only a few nitrogen filling holes are opened in the motor housing of the vibration motor. The gas storage container is connected to the inner cavity of the vibration motor through the nitrogen filling holes to form a fully sealed micro-positive pressure nitrogen protection cavity. The nitrogen environment balances the eccentric counterweight, reduces the temperature rise of the coil, and delays the oxidation and aging of components. The gas storage container includes various forms such as gas storage capsule, gas storage tube, gas storage cylinder, and gas storage tank. The materials cover butyl rubber and various flexible plastics, hard plastics, and sealing metals. The upgrade and modification components have two implementation modes: they can be used to upgrade existing sealed vibration motors, or they can be mass-produced using molds and used as supporting accessories for the assembly and shipment of brand-new vibration-type power assist motors.

2. The universal vibration-type sealed motor upgrade and retrofit component according to claim 1, characterized in that: The eccentric counterweight slider uses elliptical or semi-elliptical counterweight blocks, arranged in pairs on the left and right ends of the vibratory motor spindle. When the spindle rotates at high speed, the eccentric counterweight generates centrifugal weightlessness, driving the equipment to vibrate. The spindle extension kit includes two configurations: single-sided extension shaft section and double-sided extension shaft section. The extension shaft section is coaxially connected and fixed to the original spindle of the vibratory motor. The cooling fan kit includes one or two sets of fan blades, which generate cooling airflow by rotating synchronously with the power of the vibratory motor itself. Both the spindle extension kit and the cooling fan kit are compatible with large, medium, and small vibratory motors, and the size specifications are adjusted according to the motor model.

3. The universal vibration-type sealed motor upgrade and retrofit component according to claim 1, characterized in that: The housing modification kit includes a ventilation opening structure, an axially extended housing, and a multi-specification irregularly shaped adaptable housing; ventilation holes and air diversion channels are opened on the upper and lower locking plastic enclosed housings; the housing modification kit covers the full range of vibration motor housing sizes, including large, medium, and small models, and each specification is matched with a corresponding size locking hinge double-box air diversion housing.

4. The universal vibration-type sealed motor upgrade and retrofit component according to claim 1, characterized in that: The sealed nitrogen protection modification kit has a three-port configuration for its gas storage container: an inlet port, an outlet port, and an independent gas replenishment port. The inlet port is used for initial nitrogen filling and nitrogen circulation, the outlet port is used for replacing and expelling the original air in the cavity, and the independent gas replenishment port is equipped with a push-button filling valve for replenishing nitrogen and maintaining a stable micro-positive pressure in the cavity during later operation. The volume of the gas storage container is matched with the size of the vibration motor cavity, and large, medium, and small vibration assist motors are respectively matched with gas storage containers of corresponding capacity levels.

5. The universal vibration-type sealed motor upgrade and retrofit component according to claim 1, characterized in that: An advanced configuration with external nitrogen circulation cooling is designed for large and medium-sized high-load industrial vibration-assisted motors. Separate nitrogen circulation inlet and outlet pipes are provided, with a cooling fan and heat sink installed between them. The cooling fan provides forced air cooling only to the high-temperature nitrogen flowing inside the pipes, without directly blowing onto the motor's main body. All heat sources in the vibration motor are concentrated in the internal coils and core. After the motor is powered on, it drives the main shaft to rotate continuously using electromagnetic force. The main shaft drives the counterweights at both ends to rotate synchronously at high speed. The long-term high-speed rotation and friction of the counterweights generate additional heat, which accumulates inside the cavity. The heat is carried out of the cavity by the nitrogen medium, and the cooled nitrogen returns to the inner cavity for continuous heat exchange. The entire nitrogen circulation pipeline is completely isolated from the sealed cavity of the vibration motor, without disrupting the slightly positive pressure nitrogen sealing environment.

6. A universal vibration-type sealed motor according to claim 1, characterized in that: The upgraded components are compatible with various AC and DC power supply systems and different voltage specifications of sealed vibration motors. Application scenarios cover industrial screening equipment, concrete leveling devices, vibration cleaning machinery, medical physiotherapy vibration boosters, vibration-assisted massagers, vibration-assisted beds, vibration-assisted chairs, various vibration-assisted devices, and sports training equipment.

7. The universal vibration-type sealed motor upgrade and retrofit component according to claim 1, characterized in that: The sealed nitrogen protection retrofit kit is compatible with a special vibration motor for concrete leveling tools. While maintaining the waterproof and airtight performance of the shell, it solves the problem of heat accumulation and burning of the sealed structure by balancing the temperature rise of the coil and counterweight parts through the micro-positive pressure nitrogen chamber, while isolating water vapor and cement slurry erosion.

8. An improved method for using a universal vibration-type sealed motor, characterized in that, It includes the following steps: Step 1: Based on the power supply specifications, working environment, and equipment type (vibration booster, assistive bed, assistive chair, etc.) of the sealed vibration-type assistive motor, select either an open air-cooling route or a sealed nitrogen protection route; for large and medium-sized industrial applications, an advanced combination solution with external nitrogen pipeline circulation cooling can be selected; the components can be used for retrofitting existing vibration motors or directly assembled in the production of new machines; for vibration motors of different sizes (large, medium, and small), select the corresponding size and specifications of the retrofit kit and match the corresponding shape, material, and volume of the external gas storage container; Step Two: When choosing an open-air cooling system, two fan assembly schemes are implemented. Scheme One does not extend the spindle; instead, cooling fans are installed directly on the inner and outer sides of the eccentric counterweight sliders at both ends. Two locking plastic housings are then assembled, with ventilation holes in the housings guiding airflow through the counterweights and the mechanism. Scheme Two uses a spindle extension kit to extend the vibration motor spindle at the front and rear ends. One or two sets of cooling fan kits are installed on the front and rear sides of the eccentric counterweight sliders. An open-air cooling duct is built using a housing modification kit. The open-air cooling system is divided into three levels: Level One is a simple single-sided air-cooling modification; Level Two is a deep air-cooling modification with extended spindles at both ends and extended housings; Level Three is an air-cooling system adapted to irregularly shaped housings. All three levels are suitable for large, medium, and small vibration motors. Step 3: When selecting a closed-loop nitrogen protection route, open a few nitrogen-filling holes in the motor housing of the vibration motor, install an external gas storage container, and fill the motor cavity and gas storage container with nitrogen through the air inlet, and exhaust the air from the cavity through the air outlet to form a fully enclosed micro-positive pressure protection space; during later operation, nitrogen is replenished as needed through an independent gas replenishment interface; the volume of the gas storage container is matched with the vibration motor cavity. Step 4: When using an advanced circulation cooling solution in large and medium-sized industrial applications, connect the nitrogen circulation inlet and outlet pipelines, and install a pipeline cooling fan and heat sink between the two pipelines; the fan only forcibly cools the high-temperature nitrogen inside the pipeline and does not come into contact with the vibrating motor housing. Step 5: After assembly, power on and test run to check the heat dissipation effect of the eccentric counterweight area or the airtightness of the cavity; for large and medium-sized advanced solutions, the nitrogen cooling efficiency of the pipeline should be tested simultaneously.

9. The improved method of using a universal vibration-type sealed motor according to claim 8, characterized in that: When the sealed nitrogen protection circuit is applied to the vibratory motor of the concrete leveling tool, the original waterproof and sealed structure of the shell is retained, and only a nitrogen filling hole is opened. After the nitrogen is filled, the temperature rise generated by the operation of the coil and the counterweight is balanced, while preventing water vapor and cement slurry from entering the motor.

10. The improved method of using a universal vibration-type sealed motor according to claim 8, characterized in that: All minor adjustments, appropriate modifications, shape changes, material adjustments, parameter adjustments, and equivalent substitutions made based on the modification design ideas, design concepts, architectural logic, and basic ventilation and heat dissipation principles of this invention for various types of enclosed vibration motors of large, medium, and small sizes, including the shape of the motor housing, the extended structure of the main shaft, the assembly position and number of the fan, the shape and arrangement of the eccentric counterweight slider, the shape, material and volume of the gas storage container, the layout of the nitrogen pipeline, and the position and number of openings in the housing, as well as all deformation schemes derived from the core modification principles of this invention, fall within the protection scope of this invention.

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