7results about How to "With noise reduction function" patented technology

The invention discloses a protection device for a mechatronics motor, the protection device comprises a protection shell, a driving assembly, a ventilation assembly and an auxiliary ventilation assembly, a motor is arranged at the bottom in the protection shell, a ventilation slot I is formed in the top of the protection shell, the driving assembly comprises a storage slot, and the storage slot is formed in the back surface of the protection shell. When the working plate inclines, an extrusion frame on the working plate is separated from an air bag, at the moment, the elasticity of the air bag is recovered, negative pressure generated in the air bag is guided into the auxiliary ventilation box through a connecting pipe, the elasticity of a second spring in the auxiliary ventilation box is recovered, and at the moment, a movable baffle moves and is stored in the auxiliary ventilation box; a second ventilation groove in the outer side of the protective shell is exposed, so that the number of ventilation positions on the outer side of the protective shell is increased to three, the total amount of air entering the protective shell can be increased, and meanwhile, the temperature in the protective shell can be rapidly reduced by cooperating with work of a ball fan.

The utility model relates to high -speed railway road sound barrier technical field, concretely is a kind of high-speed railway road sound barrier with wind -guiding structure, the lower portion of stand is equipped with rigid pedestal one, and rigid pedestal one and stand are inlayed connection, the rear end of adjusting swivel rod is rotatably connected in adjusting swivel rod, the upper portion of adjusting swivel rod is equipped with adjusting nut, and adjusting nut and adjusting swivel rod are welded, the middle portion of adjusting swivel rod is equipped with fastening nut, and fastening nut and adjusting swivel rod are threadedly connected, the lower portion of adjusting swivel rod is equipped with support rod;Beneficial effect is: stand realizes length adjustment by adjusting swivel rod in the telescopic support rod, after fastening nut locking, and rigid pedestal two form triangular support structure, enhance wind load capacity;Air deflector realizes airflow self-adapting deflection by return spring, and air deflector gap formed by cooperation connecting rod effectively reduces wind pressure, simultaneously sound-absorbing board has noise reduction function, and overall structure gives consideration to stability and functionality.

The utility model relates to a high-pressure fan with a noise reduction function, which is characterized in that the high-pressure fan is mounted on the upper end surface of a bottom plate, a plurality of pieces of sound-absorbing cotton are mounted on the inner sides of two side mounting plates, and a mineral wool board is mounted in four L-shaped limiting blocks. The high-pressure fan with the noise reduction function has the advantages of providing a more comfortable working environment, protecting hearing health, reducing environmental noise pollution and the like, the high-pressure fan is wrapped by the two side mounting plates, the top plate at the upper end and the sealing plates on the two sides, a plurality of pieces of sound absorption cotton arranged on the inner sides of the two sealing plates are matched, and the noise reduction effect of the high-pressure fan is improved. According to the noise reduction device for the high-pressure fan, the noise generated during operation of the high-pressure fan can be reduced, mineral wool boards installed in four L-shaped limiting blocks are matched with four damping feet installed in a rectangular shape on the lower end face of the bottom plate, the noise reduction effect of the noise reduction device is better, and due to the streamline cambered surface design of sound absorption cotton, the noise reduction effect is better. Reflection and scattering of sound waves can be effectively reduced, the device can provide a more comfortable working environment, hearing health is protected, and environmental noise pollution is reduced.

This application relates to a method for switching headphone operating modes, a headphone, a computer-readable storage medium, and a computer program product. Applied to headphones, the headphones include a vent valve and an active noise cancellation module. The method includes: acquiring head posture data; adjusting the operating state of the vent valve and the active noise cancellation module based on the head posture data to switch the current operating mode; wherein the vent valve is used to allow or restrict external ambient sound from entering the ear; the active noise cancellation mode neutralizes the ambient sound through reverse sound waves. Using this method, on the one hand, switching headphone modes does not require physical contact with the headphones or through a mobile device application, greatly simplifying the operation process and improving operational convenience and efficiency. On the other hand, it achieves a balance between noise cancellation and wearing comfort in the headphones.

The utility model discloses a transformer oil tank structure with noise reduction function belongs to transformer technical field, including base, the top of base is equipped with the top plate for protecting transformer ontology, the top of top plate is connected with two fixed parts, and the end of two fixed parts is welded with the adjusting column, the inside of adjusting column all is provided with cross round groove, the inside of cross round groove is connected with first spring, one end of first spring is connected with cross moving disc, and cross moving disc slidingly sets up in the inside of adjusting column, the inside of cross round groove is welded with the guide column, and the inside of cross moving disc is completely penetrated by guide column, this transformer oil tank structure with noise reduction function can promote adaptive damping capacity, can adjust damping parameter in time according to load variation, operation condition change factor etc, reduces the risk of equipment failure, promotes the power supply reliability and stability of power system.

The utility model discloses an air conditioner compressor shell structure with noise reduction structure, include: shell body, the inside of shell body is provided with air conditioner compressor, and the middle part of shell body front side is equipped with the air outlet, the below fixed mounting of shell body has first support bottom plate, and the inside of shell body with the below of first support bottom plate all is provided with the noise reduction structure for guaranteeing people's physical and mental health. This air conditioner compressor shell structure with noise reduction structure, through set up the noise reduction structure, can effectively reduce the noise that the compressor produces when operating, can reduce the pollution of noise, guarantee people's physical and mental health, set up the rain -proof mechanism simultaneously, can effectively avoid rainwater to enter the inside of compressor shell, thereby can improve the service life of compressor, in addition set up the anti -clogging mechanism, can clean the air outlet that sets up at the compressor shell, guarantee normal exhaust, reduce the blockage of exhaust port that impurity enters the exhaust port.

The utility model discloses a strip-shaped ceiling lamp with a silencing function. The strip-shaped ceiling lamp comprises a lamp body and a fiber baffle, the fiber baffles are attached to the two sides of the lamp body respectively and extend towards the upper end and the lower end of the lamp body respectively, so that the fiber baffles protrude relative to the upper end face and the lower end face of the lamp body. The inner side of the fiber baffle is a flat end face, and the outer side of the fiber baffle is a wavy continuous arc face. The inner side of the fiber baffle is connected with the side face of the lamp body, and the outer side faces the lamp body. The device has the advantages of simple structure, compact matching, reasonable design and the like; therefore, the device is a product with excellent technical and economical performance.