32results about How to "Suppress abnormal sounds" patented technology

A friction drive belt is used by being wrapped around a plurality of pulleys and transmits power by friction between its belt body and each of the pulleys. The working part of the belt body has a structure in which rubber layers and non-woven fabric layers are alternately stacked along the thickness of the belt.

A chassis 2 as a first sheet-metal part has an L-shaped hooking section 27 formed at a cover mounting opening end of each side plate thereof, and an assembly guide section 28 dimpling inwardly the opening end of the chassis 2 by the thickness of a cover 8; the cover 8 as a second sheet-metal part has a hooking claw 81 extending from each side edge of the cover to the mounting side thereof and engaging with the L-shaped hooking section 27, and a guide lug 82 engaging with the assembly guide section 28, wherein an engaging claw 85 and an engaging hole 102, and a tapped hole 101 and a screw passing-through hole 84 are relatively provided on the abutment faces between the chassis 2 and the cover 8, respectively.

The invention provides a support unit, a lighting device and a display device. A lamp clip (LC) includes a support pin (SP) making contact with and supporting an optical sheet such as a diffusion plate (46), and also includes ribs (RB) rising from the outer periphery of the support pin (SP) and reinforcing the support pin (SP).

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 present invention provides a door device for an elevator, a flexible airtight member (6) extending in the opening and closing direction (A) of the door main body (1b), so as to be crimped to the surface on the ground side by virtue of its flexibility ( 4b) is attached to the door main body (1b), and the airtight member (6) is in pressure contact with the surface (4b) on the ground side, as the door (1) opens and closes, And slide on the surface (4b) of the above-mentioned ground side, in the door device of such an elevator, on the crimping surface (6a) of the above-mentioned airtight member (6) that is crimped with the surface (4b) of the above-mentioned ground side A low friction portion (6b) is formed.

The present invention is a glass plate constituent in which the loss factor is 1*10<-2> or more and the longitudinal wave sound velocity value in the plate thickness direction is 5.5*10<3> m / s or more.

The present invention provides scroll type fluid equipment which adopts a thrust plate installing structure, wherein, the thrust plate installing structure can reliably fix a thrust plate by absorbing a manufacturing tolerance and reduce the contact surface pressure of a fitting part of pins and the thrust plate. Four pieces of pins (31) are protruded from a thrust bearing part (1) of a front cover (6), four gap parts (41a-41d) are formed on the thrust plate (40) for fitting with the pins (31), the shapes of the four gap parts (41a-41d) are that the four gap parts extend along a radius direction of the thrust plate, and the shapes of the three gap parts (41a-41c) of the four gap parts are that the fitting gap of the gap parts and the pins (31) is minimal on the periphery of the thrust plate.

The present invention more reliably suppresses output-side displacement in comparison with conventional mechanisms. The present invention is provided with a rotation control part 120 which maintains a locked state when an input torque rotating the transfer mechanism 110 is not applied, and which releases the locked state when the transfer mechanism is rotated. The rotation control part 120 has an internal gear 124 and a lock plate 123 which has outer teeth that can be engaged with internal teeth of the internal gear 124. When an input torque is not applied, the inner teeth of the internal gear 124 are engaged with the outer teeth of the lock plate 123, and when the transfer mechanism 110 is rotated, the engagement of both the internal and outer teeth is released. Thus, even if torque is applied from the output side, the engagement of both the internal and outer teeth is not released by the torque.

An elastic blade includes an edge layer and at least one backup layer laminated on the edge layer. The edge layer includes a contact edge to contact a contact object and an opposing face to oppose the contact object, and the backup layer is greater in elastic power than the edge layer.

The invention provides a motor capable of restraining a rotor to radially vibrate, a motor device with the motor and a pointer type display device. In the motor, coils are configured at the periphery of two salient poles (61f, 61b) (main poles) arranged in a first angle region (theta1) less than 180 degrees among a plurality of salient poles of a stator iron core. And the salient poles (61c to 61e) in a second angle region (theta2) of 180 degrees among the plurality of salient poles are first assisting poles which are not provided with coils at the periphery. At the opposite side to the two main poles (the salient poles 61f, 61b) side, the second angle region (theta2) takes an extension line of two bisectrixes as a center. The bisectrixes divide the first angle region (theta1) into two equal parts. An interval structure between the main poles (the salient poles 61f, 61b) and a magnet is different from the internal structure between the first assisting poles (the salient poles 61c to 61e) and the magnet.

A coupling mechanism of the present disclosure includes a drive transmission member, a coupling member and a biasing member. The drive transmission member includes a shaft portion and an engagement pin. The coupling member includes a plurality of engagement protrusions and a holding protrusion which is smaller than the engagement protrusion. The holding protrusion makes contact with the engagement pin in a state where the engagement pin makes contact with the pressing surface. A load in a reverse rotation direction is applied from the holding protrusion to the engagement pin when the coupling member is reversely rotated.

A heat exchanger is provided with: an inflow port (225a), through which a refrigerant flows in; a cooling flow outlet port (227a), through which the refrigerant flows out when cooling operations are performed; and a warming flow outlet port (226a), through which the refrigerant flows out when warming operations are performed. The ports are disposed such that the distance between the inflow port (225a) and the warming flow outlet port (226a) is shorter than the distance between the inflow port (225a) and the cooling flow outlet port (227a).

A thrust receiver abuts against an expandable and contractable trim rod to adjust a trim angle of a body of an outboard engine system. The thrust receiver includes a shaft portion rotatable about an axis generally parallel to an axis of the trim rod, and a pressure-receiving portion provided on the shaft portion to abut against a tip end of the trim rod. An abutment point between the trim rod and the pressure-receiving portion is displaced by a distance from an axis of the shaft portion in a lateral direction of the system body. Because the pressure-receiving portion of the thrust receiver rotates about the axis of the shaft portion accompanying the expansion and contraction of the trim rod, a twisting generated at the abutment point can be minimized to suppress generation of an abnormal sound. Moreover, the structure can be simplified to contribute to a reduction in cost, as compared with a system in which a ball is disposed at an abutment point.

The present invention provides a motor capable of suppressing radial vibration of a rotor, a motor device having the motor, and a pointer display device. In the motor, coils are respectively arranged around two salient poles (61f, 61b) (main poles) located in a first angular range (θ1) smaller than 180° among a plurality of salient poles of the stator core. And, the salient poles (61c to 61e) located in the second angle range (θ2) of 180° among the plurality of salient poles become the first auxiliary poles without coils arranged around them. The side opposite to the side where the two main poles (61f, 61b) are located is centered on the extension of an imaginary bisector that bisects the first angle range (θ1). The structure of the air gap between the main poles (61f, 61b) and the magnet is different from the structure of the air gap between the first auxiliary poles (61c to 61e) and the magnet.

A fuel supply apparatus of an internal combustion engine is provided which can discharge air bubbles or air from within fuel supply paths while increasing pressure within a common rail up to a predetermined pressure level before a start of the internal combustion engine, can reduce a period of time of cranking from when an ignition switch is switched on and which can reduce noise that occurs when the air bubbles or air are being discharged. The fuel supply apparatus is provided with a flow rate control valve that adjusts a flow rate of fuel supplied to the common rail and a pressure control valve that reduces the pressure within the common rail. The fuel supply apparatus is further provided with: a pre-start drive control portion that performs a pre-start drive of an electromagnetic low pressure pump before the start of the internal combustion engine; a flow rate control valve control portion that maintains the flow rate control valve in an open state while the pre-start drive is being performed; and a pressure control valve control portion that maintains the pressure control valve in a closed state and performs a control that opens the pressure control valve at least once for a short time period while the pre-start drive is being performed.

The invention provides a motor capable of restraining a rotor to radially vibrate, a motor device with the motor and a pointer type display device. In the motor, coils are configured at the respective periphery of two salient poles (61f, 61b) (main poles) arranged in a first angle region (theta1) less than 180 degrees among a plurality of salient poles (61) of a stator iron core. And the salient poles (61c to 61e) in a second angle region (theta2) of 180 degrees among the plurality of salient poles (61) are first assisting poles which are not provided with coils at the periphery. At the opposite side to the two main poles (the salient poles 61f, 61b) side, the second angle region (theta2) takes an extension line of two bisectrixes as a center. The bisectrixes divide the first angle region (theta1) into two equal parts. A first interval (g1) between the main poles (the salient poles 61f, 61b) and a magnet is narrower than a second internal (g2) between the first assisting poles (the salient poles 61c to 61e) and the magnet.

The present invention provides a spring type torque limiter capable of preventing vibration and noise when used by increasing the rigidity of both end parts of a coil spring. Inclination angles are provided on side faces of an outer ring member projecting part (12) and a cover member projecting part (18) on which the both end parts of the coil spring (4) fitted on an outer diameter face of an inner ring (2) abut, respectively, so as to restrict movement of the both end parts to the outer diameter direction. This enhances the rigidity and suppresses vibration and noise of the coil spring (4).

The invention provides a negative pressure supercharger that can prevent the stick-slip phenomenon of the sealing lip, ensure the smooth sliding of the valve cylinder, and prevent the generation of abnormal sounds. The negative pressure supercharger of the present invention installs a bearing sleeve (9) made of elastic material in the bearing sleeve (12) provided on the rear wall of the supercharger housing (1), which is in contact with the supercharger piston (5) The outer circumferential surface of the connected valve cylinder (10) is slidably supported, and a grease storage tank (35) for holding grease (g) is provided on the inner circumferential surface of the bearing sleeve (9). In addition, the bearing sleeve (9) The rear end of (9) is integrally connected with a sealing lip (13) whose wall thickness is thinner than the sealing lip (13) and elastically tightly connected with the outer circumferential surface of the valve cylinder (10). The inner circumferential surface of the sealing lip (13) is provided with a sealing lip (13). There is an extended grease reservoir (35') in continuous communication with the grease reservoir (35) and holding grease (g) common to the grease reservoir (35).