43results about How to "Prevent abnormal sound" patented technology

A support is embedded into a concave part (22) of a vehicle body (14) from bottom of the vehicle body. The support is mounted as sandwiching between the vehicle body (14) and a piston rod (12) by use of the vehicle load but is not fastened on the support. The support comprises: an inner side component(3); an out side component (32); an anti-vibration basal body (34) which is made of rubber elastomer for combination of the components; and a support springback stopper (36) arranged on a top end (12a) of the piston rod for restricting downwardly relative displacement of the piston rod. A stop rubber part (42) is arranged on a stop plate part (48) of the support springback stopper, the stop plate part is opposed to, with a space thereof, a top wall part (26) around an open part (28) of the concave part (22). A plurality of spherical cap protuberance (52) are arranged along circumferential direction of a bottom surface of the stop rubber part (42). This invention can prevent noise generated when a rebound stopper and a body are brought into contact with each other in undesirable deformation displacement of a piston rod in a strut mount.

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.

The present invention provides an anti-vibration device, which is easy to set the elastic constant within the range of small axial displacement of the inner cylinder, and can prevent the occurrence of abnormal sound during large displacement, and effectively Standing load-deflection curve. The anti-vibration device includes: an inner cylinder (12), an outer cylinder (14), and a body rubber part (16) combining the two; The edge part (18) and the small-diameter cylinder part (20) between the two flange parts constitute, and the body rubber part (16) connects the outer peripheral surface of the cylinder part (20) and the outer cylinder ( 14) are bonded between the inner peripheral surfaces, and a space portion (34) is ensured on the outer periphery of the flange portion (18), and a stopper rubber portion (24) is provided on the axial end surface of the flange portion (18). A plurality of protrusions (26) are provided on the front end surface of the stopper rubber part (24).

The present invention provides a spring-type torque limiter, which prevents vibration and abnormal sound during use by increasing the rigidity of both ends of a coil spring. By making the side faces of the outer ring member protrusion (12) and the cover member protrusion (18) on both ends of the coil spring (4) mounted on the outer diameter surface of the inner ring (2) have an inclination angle , the movement of the two ends in the direction of the outer diameter is restricted, thereby increasing the rigidity, and suppressing the generation of vibration and abnormal sound of the coil spring (4).

The invention provides a cover arranged at the main body of an electrical connection box, which comprises a wall part for holding a first wiring harness and a second wiring harness connected with the electrical connection box. A first holding part is extended from the wall part in a derivative direction along the first wiring harness; the first wiring harness can be maintained outside of a holding component. The second wiring harness can be maintained at the wall part by a second holding part.

A sheet conveying device (40A through 40G, 95) includes a holder (49), a friction member (48), a rotary conveyance member (47) forming a nip area (N2) between an outer circumferential surface thereof and the friction member (48), rotating while contacting the friction member (48), and separating and convey multiple sheet-like materials (P) one by one at the nip area (N2), and a pair of guides (50A through 50H) configured to lift an underside of each of the sheet-like materials (P) facing the friction member (48), the pair of guides (50A through 50H) disposed upstream from the nip area (N2) in a sheet conveying direction, outside both ends in an axial direction of the rotary conveyance member (47), separate from the nip area (N2) from the axial direction of the rotary conveyance member (47), and being substantially even with the outer circumferential surface of the rotary conveyance member (47).

In a signal generation circuit for a compound acoustic actuator that generates a sound and a vibration in response to a frequency of a signal input to the compound acoustic actuator, the signal generation circuit comprising a plurality of signal data stored in a memory to generate a plurality of signals having mutually different frequencies, the plurality of signals at least including a signal, a frequency of which is equal to a resonant frequency causing the compound acoustic actuator to generate the vibration, a synthesizing means to synthesize a plurality of drive signals in accordance with the plurality of signal data so as to cause the compound acoustic actuator to generate the vibration, and a sweeping means to sweep the plurality of drive signals, repeatedly.

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.

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.

The present invention provides a harness bonding part structure of a vehicle door, which can prevent abnormal sounds generated by contact between a coupler for bonding an electric device with a harness and the outer surface of the vehicle door body. The harness bonding part structure of the vehicle door (1) includes a rear door lower decorating member (50) arranged on the vehicle exterior at a rear door body (30); a ground illumination lamp (101) arranged on the rear door lower decorating member; a first harness (102) led out from the interior of the rear door body towards the vehicle exterior; a second harness (103) led out from the ground illumination lamp; and a harness connecting part (104) for connecting the first harness and the second harness. The rear door lower decorating member includes a surface component (51) forming an appearance face; and a reinforcing component (52) extending from the surface component towards the door body side and along the length direction of the rear door lower decorating member. The harness connecting part is bonded to the reinforcing component through a bonding part (105).

The charging circuit is used for bridge type load with an amplifying unit and a load unit. The amplifying unit drives load unit according to audio signals and reference voltage; the reference voltage is saved in a reference capacitor. The charging circuit comprises a power unit and a comparator; the power unit provides a first reference voltage and a second reference voltage; when the reference voltage is lower than a first preset value, the comparator disenables the control signal for providing the first voltage for the capacitor; when the reference voltage is higher than or equal to the first preset value and is lower than the second preset value, the comparator enables the control signals for providing a second voltage for the reference capacitor.

The invention provides an automobile stern door electric jackstay which comprises a sleeve and a lead screw, wherein the sleeve comprises a first sleeve and a second sleeve coaxially connected; an internal thread is formed in the inner wall of the first sleeve; a lap of protruding edge is arranged on the inner wall of the sleeve between the first sleeve and the second sleeve; the lead screw comprises a first rod body and a second rod body coaxially connected; the first rod body is in screw joint with the first sleeve; a stop dog is in screw joint with the periphery of the second rod body; thesecond rod body and the stop dog are positioned in the first sleeve; the stop dog can be in contact with the protruding edge; and the rotation direction of a second external thread in the second rod body is opposite to that of a first external thread in the first rod body. The automobile stern door electric jackstay can prevent a jackstay body from loosening and prevents a stern door from generating abnormal sound during the operating process.

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.

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.

Provided is an air conditioner for a vehicle capable of preventing generation of unusual sound at a connection part by a connection member of a wind direction member in first and second air blowing out port devices. A second engagement part 86 provided on the connection member 84 is engaged with a first engagement part 36 provided on each wind direction member in such a state that the connection member 84 for connecting the wind direction members to each other in the first and second air blowing out port devices 14, 16 is deflection-deformed. Thereby, the second engagement part 86 is pressed/brought into contact with the first engagement part 36 based on restoration force relative to the deflection-deformation of the connection member 84.

The invention provides an electric injection molding machine and an electric press machine under the intermittent action of high load and a long-life straight-feeding device used in short-stroke reciprocating motion parts. In the ball screw thread 1 of the straight-feeding device of the present invention, between the adjacent rolling elements 9, retainers 21 respectively having two concave surfaces 23 facing the rolling elements 9 are provided, and at the same time, residual Austenite reaches a cyanide layer of 15 to 40% by volume.