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45results about How to "Prevent abnormal sound" patented technology

Motor

ActiveCN1604428ALower motion soundPrevent changes in contact stateDC commutatorMechanical energy handlingEngineeringElectric motor
A gear housing 10 has a support rib 10k formed thereon. When the female connection terminal portion 33a on the brush holder device 21 side and the male connection terminal portion 36a on the plate cover side are intruded and connected together, the support rib is engaged with a terminal supporting portion 35c that supports the female connection terminal portion 33a and holds a posture of the female connection terminal portion 33a, and thus holding the posture of the brush holder device 21. To provide a motor wherein, even if an intrusion connection force is exerted on a connection terminal portion formed in a brush holder device, a posture of the brush holder device is prevented from being changed and the state of contact between brushes held by the brush holder and a commutator is prevented from being changed.
Owner:DENSO CORP

Cap and container with cap

Provided are a cap (1) which can improve the sealing property of a container and which is suitable for use in the case where the internal pressure of the container is high such as the case where the content of the container is carbonated beverage, and a container (2) with the cap. The cap comprises a cap body (4) which has a top wall (6) and a skirt wall (7) drooping from the outer periphery of the top wall (6) and in which a female screw (9) which is fit to a male screw (10) of an opening (3) of the container is formed in the skirt wall (7), and a composite resin packing (5) for sealing the opening (3) of the container. The packing (5) comprises a top plate (17) which comes into contact with the leading end portion of the opening (3) of the container and with which the end portion is covered, and a circular inner foot (18) which droops from the top plate (17) and which is adhered to the inner periphery surface of the opening (3) of the container. Further, a circular bending portion (19) which bends downward relative to the top plate (17) and with the inner periphery surface of which the outer periphery surface of the opening (3) of the container is covered is provided in continuous with the outer periphery edge of the top plate (17). Further, the cap body (4) comprises an urging portion (21) for urging the outer periphery surface of the bending portion (19) of the packing (5)in a closed state and the bending portion (19) urged is elastically transformed to be pushed to the outer periphery surface of the opening (3) of the container.
Owner:NIHON YAMAMURA GLASS CO LTD

Scroll compressor

Provided is a scroll compressor wherein the characteristics of a so-called step-type scroll compressor are exploited to suppress the reduction of a performance or the occurrence of an abnormal noise, which is caused by a torsion moment applied to a rotary scroll. In a so-called step-type scroll compressor (1), when suctioning of gas is stopped in a plurality of pairs of compression chambers (16) which are symmetrical with respect to a point, the volume (V1) of the compression chamber (16) formed on the ventral surface side of a stationary scroll lap (14B) of a stationary scroll (14) is different from the volume (V2) of the compression chamber (16) formed on the ventral surface side of a rotary scroll lap (15B) of a rotary scroll (15).
Owner:MITSUBISHI HEAVY IND LTD

Developing device and image forming apparatus therewith, and developer carrying member therein

A developing device includes a housing, a developer carrying member, and a magnet member. The housing contains magnetic developer. The developer carrying member is rotatably supported on the housing and carries the developer on its circumferential surface. The magnetic member has a shaft fixed inside the developer carrying member and a plurality of developer carrying member-side magnetic poles fixed to the shaft in its circumferential direction. An even number of the developer carrying member-side magnetic poles are formed by plastic magnets, one or more other of the developer carrying member-side magnetic poles are formed by rubber magnets, and one or more pairs of the plastic magnets located opposite each other across the shaft have the same shape and are fixed in axial symmetry with respect to the shaft.
Owner:KYOCERA DOCUMENT SOLUTIONS INC

Opening/closing device of door and the like

An inexpensive and lightweight opening / closing device of door and the like with small number of components comprises a member shape holding mechanism in which an insertion member is not deformed even when the device is opened fully by an undue external force but exhibits a practical strength as an opening / closing device thus sustaining the full open state surely, and generation of strange sound from a latching mechanism can be prevented during the opening / closing operation and under full open state. The opening / closing device comprises an aluminum outer tube having a substantially square flat cross-section or a stainless steel outer tube having a substantially C-shaped cross-section, an aluminum insertion member having a substantially C-shaped flat cross-section or substantially square cross-section and inserted into the outer tube or a stainless steel interior member having a substantially C-shaped cross-section and inserted into the outer tube, an engaging plate provided on the base at the distal end of the outer tube, a leaf spring provided in the insertion member, and a sliding member provided at the rear end of the insertion member.
Owner:YAGI KK

Heat exchange assembly and air conditioning system

The invention relates to the technical field of air conditioning, and discloses a heat exchange assembly. The assembly comprises a fan structure and a heat exchanger. The fan structure comprises a hub and a fan blade set, and the fan blade set is connected with the hub; an annular space is formed between the fan blade set and the hub in the radial direction of the hub; and the heat exchanger can be arranged in the annular space. According to the heat exchange assembly, the heat exchanger is arranged in the fan structure, and when air enters the fan structure in the axial direction, the air firstly flows through the heat exchanger and then is exhausted through the fan structure. The air speed is low when the air flows through the heat exchanger, and abnormal sound can be effectively prevented. Moreover, the size of a fan can be enlarged, thereby reducing the rotating speed of the fan and reducing noise. Moreover, the heat exchanger is embedded into the fan structure, so that the space is saved, and the heat exchange assembly is more compact in structure and can be more conveniently applied to an air conditioning system. The invention further discloses the air conditioning system.
Owner:QINGDAO HAIER SMART TECH R & D CO LTD +1

Noise reduction method and device for vehicle

The invention discloses a noise reduction method for a vehicle, and the method comprises the following steps: S1, respectively measuring a loudspeaker of each sound reproduction channel of a vehicle-mounted audio system, and obtaining the maximum non-distortion output amplitude of a signal corresponding to each frequency point in a frequency domain; S2, generating a reference signal, and filteringthe reference signal through an adaptive filter to generate a control signal; S3, comparing the control signal with the maximum output amplitude, if the control signal is not greater than the maximumvalue of the maximum output amplitude, directly converting the control signal into an analog signal, and feeding the analog signal to loudspeakers of corresponding sound reproduction channels througha power amplifier; and if the control signal is greater than the maximum value of the maximum output amplitude, performing power compression on the control signal, converting the control signal subjected to power compression into an analog signal, and feeding the analog signal to the loudspeakers of corresponding sound reproduction channels through the power amplifier. The possibility of the divergence of an active noise control system can be solved, and abnormal sound is prevented from being generated as soon as possible.
Owner:COLSONIC SUZHOU ELECTRONICS CO LTD
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