39results about How to "Reduce inertial mass" patented technology

The invention discloses an infrared Fourier spectrum detector with ultrahigh spectral resolution. An infrared light path consists of a pair of back-to-back angle mirrors, a pair of plane reflectors, a pair of obliquely-arranged reflectors, a beam splitter and a compensator; an angle mirror driving system consists of a linear motor and a linear bearing; and the angle mirrors are driven by the motor to perform linear reciprocating motion so as to generate light path difference. A reference light path and an infrared light path are in the same light path, the reference light path is positioned at the center part, and the infrared light path is positioned at the peripheral part. A reference light source adopts a frequency stabilized laser. A fore optical device is a horizontal access reflecting telescope, and a rear optical device focuses infrared interference light signals onto the infrared detector. The detector converts the interference light signals into electrical signals, the electrical signals are amplified by an amplifier and then converted into digital signals, and the interference signals are recorded by a data acquisition system according to position signals of a movable mirror so as to acquire an interference pattern. The interference pattern is subjected to Fourier transformation to acquire infrared spectrum signals.

A stepping motor which is capable of obtaining desired driving torque without sacrificing magnetic properties of a magnet with respect to a stator, reducing inertia mass of a rotor by decreasing a use amount of a magnet material, and thereby, can enhance driving performance including control responsiveness is provided. In a stepping motor in which a plurality of stators (20A, 20B) around which coils (21) are wound are placed in an axial direction of a motor shaft (31), a rotor (30) is rotatably provided with a space at inner periphery sides of these stators (20A, 20B), the motor shaft (31) is placed in a center of the rotor (30), and the rotor (30) includes a rotor body (33) placed at an outer periphery of the motor shaft and a cylindrical magnet (32) integrally provided on an outer periphery of the rotor body and magnetized to form multipoles in a circumferential direction, the stepping motor is characterized in that the cylindrical magnet (32) has at least its inner peripheral surface bulged inward in a diameter direction so that a portion corresponding to a central portion in the above described axial direction of each of the coils (21) becomes thicker than the other portions.

The present invention relates to gas distributing mechanism of engine, and is especially one kind of four-valve gas distributing mechanism with two top set cams mainly for 125-175 cc displacement engine of motorcycle and motor tricycle. The four-valve gas distributing mechanism includes one gas intake duct with intake valve and one exhaust duct with exhaust valve on the cylinder head. It features the intake valve and the exhaust valve with separate clamping slot in the bar end, the spring holders set in the clamping slots, the conic blocks between the spring holder and the bar end, and the valve springs in holder. The present invention can raise gas exchanging efficiency effectively for complete burning.

Disclosed is an assembling device of a simple structure for assembling, for example, a liquid crystal panel and a backlight unit. In order to attain assembling work with a high accuracy and quickly, the backlight unit (1) is pressed by compression springs (4) for positioning and holding the panel (5), and in such a state, the panel (5) is fitted into the recess of the backlight unit (1) and fixed.

The invention relates to a quick cutter servo device with two decoupled shafts, and belongs to the technical field of cutting machining of optical curved surface parts and ultraprecise parts. A diamond cutter is fixedly connected with a cutter seat on a flexible hinge base body through a fixing screw, and the two ends of an X-axis piezoelectric stack are connected with the flexible hinge base body and an X-axis driving end respectively. The X-axis piezoelectric stack is connected with the flexible hinge base body through a first pre-tightening bolt, and a first Z-axis piezoelectric stack and a second Z-axis piezoelectric stack are connected with the flexible hinge base body and a Z-axis piezoelectric stack respectively. A displacement detection block is mounted behind the cutter seat on the flexible hinge base body, and the displacement detection block is fixedly connected with the flexible hinge base body through a fixing screw. The quick cutter servo device with the two decoupled shafts has the advantages that the structure is novel, the mode that a piezoelectric actuator is in parallel connection with a flexible mechanism is used, the inertia mass of the movement part of a flexible hinge mechanism is reduced, the operation bandwidth of an FTS device can be better increased, and the machining efficiency of the FTS device is improved.

The invention aims at providing a centrifugal blower with a back vane wheel, which can reduce the loss of conflict and try for improving the performance of the blower. The back vane wheel of the centrifugal blower is provided with a tubular shell and a multi-wing vane wheel which can rotate freely inside the tubular shell and is supported by a shaft; a plurality of vane plates which are as long as the length of the airfoil chord from the external circumference to the central of the internal circumference of the vane wheel are arranged along the circle of the vane wheel an equal intervals; besides, an prolonging part in an approximate triangle shape is arranged at the front end part of the vane plate by spaced by a plurality of the vane plates; wherein, the prolonging part bends in a streamline shape to the front along the rotating direction and the front end part of the prolonging part is led to reach the inner edge part of the vane wheel. Besides, the multi-wing vane wheel is formed by leading the end part of the vane plate at the external circumference of the vane wheel to deform along the rotation direction of the vane wheel.

The invention belongs to the technical field of recovery devices, and particularly relates to an underwater spring buffering and recovery platform. The underwater spring buffering and recovery platform aims to prevent experimental articles from being damaged and facilitate recovery. The underwater spring buffering and recovery platform is characterized in that a recovery platform is overall designed underwater in an approximate-zero-buoyancy mode, and power consumed by a hoisting mechanism is small; a buffering unit is small in inertia mass and good in buffering performance; because buffering plates are connected through elastic ropes, independence of the buffering plates is guaranteed, and certain buffering force can be transmitted; because a buffering layer is supported by springs, rigid requirements for the situation that the platform rises above the water surface are met, and operation stability is guaranteed; floating barrels are evenly arranged at the bottom of a base frame, and therefore the load-carrying capability of the base frame is improved; a counter weight convenient to disassemble and assemble is arranged around a hoisting point, and therefore the load-carrying capability of the platform underwater can be adjusted.

A twin-clutch device includes first and second clutch actuating mechanisms; a first clutch disconnection/connection control mechanism for exerting on the first clutch actuating mechanism a controlling force for switching disconnection/connection of the first clutch actuating mechanism; and a second clutch disconnection/connection control mechanism for exerting on the second clutch actuating mechanism a controlling force for switching disconnection/connection of the second clutch actuating mechanism. The first and second clutch disconnection/connection control mechanisms include control actuating members that are supported on a fixing member in a non-rotating state while being allowed to move in a direction along rotation axes of a first driven rotary member and second driven rotary member, the control actuating members being respectively connected to first and second clutch actuating mechanisms via bearings. The clutch so configured reduces the inertial mass by reducing the weight of the rotary portion of the clutch.

Provided is a scroll compressor which can contribute to reduction of the entire size and the entire weight thereof, and has excellent durability and reliability. The scroll compressor can be operated at an ultrahigh speed by applying a new refrigerant to the scroll compressor. In the scroll compressor, the substrate of an Oldham's ring (107) is composed of an aluminum alloy, and a hard DLC layer is formed on the surface of the substrate via foundation layers which have an excellent adhesiveness and compensate for the hardness and, accordingly, the weight of the Oldham's ring is reduced by approximately 1/3, and the adhesion and abrasion between sliding members are prevented to improve the abrasion resistance and reduce the friction coefficient and, additionally, the inertia mass of a rotation system is reduced. Furthermore, a rotary scroll (101) has a material structure similar to the structure of the Oldham's ring and, accordingly, the eccentric mass of a rotation system is reduced. Thus, the torque load of a motor (100) can be extremely reduced, the entire size and weight can be reduced, and the durability and reliability are excellent. The scroll compressor can be operated at a ultrahigh speed by applying a new refrigerant to the scroll compressor, and the compression performance similar to that obtained when chlorofluorocarbon is used can be obtained.

A belt pulley for a gear mechanism, in particular for a steering gear, having a cylindrical body having an outer surface on which a toothing made of a plastic material is provided, and a fastening flange which is provided with fastening openings, is characterized in that the toothing is configured integrally with the cylindrical body.

A centrifuge includes a swing rotor. Rotor arms of the swing rotor have recesses into which hangers of the swing rotor at least partially swing in a swung-out state. As a result, the centrifuge container and thus also the centrifuges are more compact, because the swinging-out requires less space. An inertial mass of the swing rotor is reduced due to the recesses provided therein, whereby energy consumption, primarily when starting the centrifuge, is significantly reduced.

The invention relates to a cutting device for the tobacco industry and method for disabling the cutting device, specifically to a cutting device for the tobacco industry for cutting at least one transported strand into a number of rod-shaped articles. The cutting device includes a knife carrier, a tube carrier and a control device aligned and connected with the rotary drives of the knife carrier and the tube carrier, for producing a switch off signal for controlled shutting-down of the device in synchronous cutting operation, and activating and performing preset asynchronous braking running. At least one of the tube carrier and/or the knife carrier are rotated in assigned retardation time that starts during the synchronous operation of the direct drives in a preset stop position. The knives and the tubes are present outside common cut positions. The above step for disabling the cutting device is performed according to the inventive method.

The invention discloses a safety door with an adhesive tape. The safety door is characterized by comprising a body (1), a door lock (2) is arranged on one side of the body (1), a notch (3) located under the door lock (2) is arranged on one side where the door lock (2) is located, of the body, an anti-pinch plate (4) is arranged in the notch (3), and the anti-pinch plate (4) is connected to the body (1) through spring hinges (5); two blocks (6) are respectively arranged on upper and lower ends of the one side of the anti-pinch plate (4) and close to the body (1), and the hollow adhesive strip (7) connected with the anti-pinch plate (4) is arranged in the space formed by the blocks (6), the body (1) and the anti-pinch plate (4); the adhesive tape (7) is of a square pipe made from a silicon rubber material. The safety door has the advantages that the situation that children's fingers are pinched or even pinched off between the door and a door frame is avoided, and the children's fingers cannot be injured evenly pinched between the anti-pinch plate and the body.

A relay (1) comprising an electromagnetic drive unit (2) with a rotatable armature (3) and a yoke (4), the armature (3) comprises a first magnetic contact region (5), the yoke (4) comprises a second magnetic contact region (6), the first magnetic contact region (5) being in touch with the second magnetic contact region (6) in a first state of the relay (1), the relay (1) further comprises at least an immovable first electric contact (7) and a moveable contact arm (8) with at least a second electric contact (9), the first electric contact (7) contacts the second electric contact (9) in the first state is suggested, with the armature (3) and the contact arm (8) are arranged together on a shaft (10), and with the shaft (10) is embodied as torsional element (11).