41results 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.

A variable valve train apparatus operable in a low-speed mode in which a low-speed rocker arm is rocked by a low-speed cam through a roller or a slipper to thereby open or close an intake valve, and in a high-speed mode in which a high-speed rocker arm is rocked by a high-speed cam through a roller or a slipper and a changeover mechanism part on the side of the low-speed rocker arm is pressed by a changeover mechanism part on the side of the high speed rocker arm together with which the low-speed rocker arm is rocked to open or close the intake valve. The axis of the changeover mechanism part is positioned at the middle of the width of the roller or slipper in the axial direction of the rocker shaft to prevent inclination of the high-speed rocker arm.

A stepping motor is disclosed 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. 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 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.

The invention discloses a magnetic liquid acceleration sensor, belonging to the technical field of inertia sensors and solving the problems that the weight is heavy, the measuring range is short, the sensor fails due to the fact that magnet is demagnetized because of long-time use and the stability of the sensor is reduced due to the fact that magnetic particles are aggregated because of long-time work failure in a traditional magnetic liquid acceleration sensor are solved. A cylindrical magnet (5) of the magnetic liquid acceleration sensor is a rubber magnet; the cylindrical magnet (5) is placed in a casing (2); magnetic liquid is filled into the casing (2) and is attached to two axial ends of the cylindrical magnet and enables the cylindrical magnet to suspend; a left end cover (1) and a right end cover (6) are respectively in threaded connection with two ends of the casing; a first coil (3) and a second coil (4) are respectively wound in two annular grooves of the casing; the first coil is connected with the second coil in a differential manner; the diameter of an inner cavity of the casing is reduced from the center to the left side and the right side; a taper angle is 2 alpha; the lateral surface of the inner cavity of the casing takes an axis as a symmetrical shaft; and a first groove and a second groove are formed along the axis.

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.

The invention provides a drum pad, characterized in that at least one part of a beaten surface which is deformed when beaten is made from rubber foam material with independent bubble, and contact time is between 3 to 9 m sec and coefficient of restitution of the part is 0.7 or more when the part made from foam material is beaten by a stick. The foam material has rubber rigidity between 10 to 60 in Asker rigidity C and loss angle tangent which is 0.1 or less at 20 DEG C. The contact time is the period from the time when the stick contacts with the beaten surface to the time when the stick departs from the beaten surface.

The invention discloses a pinch-resistant door with a bolt. The pinch-resistant door comprises 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 arranged, of the body (1), and a pinch-resistant plate (4) is arranged in the notch (3) and is hinged with the body (1) through spring hinges (5); the pinch-resistant plate (4) is connected with the body (1) through the bolt (6); grooves (7) installed with spring hinges (5) are arranged in the pinch-resistant plate (4) and the body (1); the pinch-resistant plate (4) comprises an inner core (8) with material density lower than that of the body (1), and the outer surface of the inner core (8) is coated with a veneer (9) identical in material with the body (1). The pinch-resistant door has the advantages that the situation that children's fingers are pinched or even pinched off by the door is avoided, and the pinch-resistant door can be fixedly connected to the body conveniently and rapidly.

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.

A variable valve train apparatus operable in a low-speed mode in which a low-speed rocker arm is rocked by a low-speed cam through a roller or a slipper to thereby open or close an intake valve, and in a high-speed mode in which a high-speed rocker arm is rocked by a high-speed cam through a roller or a slipper and a changeover mechanism part on the side of the low-speed rocker arm is pressed by a changeover mechanism part on the side of the high speed rocker arm together with which the low-speed rocker arm is rocked to open or close the intake valve. The axis of the changeover mechanism part is positioned at the middle of the width of the roller or slipper in the axial direction of the rocker shaft to prevent inclination of the high-speed rocker arm.

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 relates to a method for changing the dynamic behavior of a back rest of a weaving machine, and to a weaving machine having a back rest, wherein the back rest contains at least one deflecting element (2) for deflecting warp threads (1), wherein the deflecting element (2) is connected to the weaving machine via one or more spring elements in such a way that, when forces are applied tothe deflecting element (2) via the warp threads (1), inertia forces and spring forces become active on the deflecting element (2). The inert mass acting on the deflecting element (2) is changed in order to adapt the dynamic behavior of the back rest to altered weaving conditions in that parts of the deflecting element (2) or parts which are connected to the deflecting element (2) are replaced, removed or supplemented.

The invention relates to a cam type driving weft needle device which comprises a spindle gear, a cam and a rack support, wherein the cam is coaxial with the spindle gear; the rack support is matched with a working surface of the cam; a rack is fixedly connected with the rack support; a countershaft gear matched with the rack is arranged on a toothed surface of the rack; a weft needle is arranged on a shaft of the countershaft gear; at least one section of a bent part for driving the rack support to have a reciprocal rectilinear motion is arranged on the cam. The combined structure of the cam and the gear transmission is utilized by the cam type driving weft needle device, so that the inertia mass is small, the self-rotation inertia is small, the device is more suitable for high-speed reciprocating motion, the reliability is high and the service life is long.

The present invention provides a personalized wearable rehabilitation mechanical arm device, the device includes a shoulder structure, an elbow structure and a wrist structure, the shoulder structure can rotate around the first direction, the second direction and the third direction respectively, The elbow structure includes an elbow drive unit, an elbow drive rope set, first and second rotating plates and an elbow shell set, the elbow drive unit is arranged on the shoulder structure, and the elbow drive unit is respectively It is drivingly connected with the first rotating plate and the second rotating plate to drive the first rotating plate and the second rotating shaft plate to rotate relatively. The wrist structure includes a wrist driving unit, a wrist driving rope set, a wrist rotating disk and a wrist shell set , the wrist drive unit is arranged on the shoulder structure, and the wrist drive unit is drivingly connected with the wrist rotating disk through the wrist driving rope set to drive the wrist rotating disk to rotate relative to the wrist shell group. The technical solution of the present invention can solve the technical problems of the rehabilitation mechanical arm in the prior art, which are bulky, complex in structure and low in motion precision.

[Problem] To provide a scroll compressor which can contribute to reduction in the entire size and the entire weight and has excellent durability and reliability, and which can use a new refrigerant to make ultrahigh speed operation possible. [Means for Resolution] In the scroll compressor, the substrate of an Oldham-coupling ring 107 is made of an aluminum alloy, and a hard DLC layer is formed on the surface of the substrate with interposition of underlayers provided for obtaining excellent adhesion and compensating for hardness so that the weight of the Oldham-coupling ring is reduced by approximately 1 / 3, compared with the conventional case where the Oldham-coupling ring is made of an iron-based material. Adhesive wear between sliding members are prevented so that improvement in abrasion resistance and reduction in friction coefficient are achieved. As a result, the inertial mass of a rotation system is reduced. Furthermore, an orbiting scroll 101 also has the same material structure so that the eccentric mass of the rotation system is reduced. Thus, the torque load of a motor 100 can be reduced as sufficiently as possible to thereby contribute to reduction in the entire size and the entire weight to obtain excellent durability and reliability. In addition, the scroll compressor can use a new refrigerant to make ultrahigh speed operation possible so that compressing performance equivalent to the case where chlorofluorocarbon is used can be obtained.

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).

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.

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 discloses a transverse-placing type electromagnetic control valve structure and regulation methods thereof. The transverse-placing type electromagnetic control valve structure comprises a valve seat (1), a route regulation block (2), an electromagnet (3), an armature (4), a control valve core (5), an end face seal ring (6), an electromagnet binding post (7), a compression screw (8), a groove seal ring (9), a return spring (10), a regulation gasket (11) and a spring seat (12). The regulation methods of the transverse-placing type electromagnetic control valve structure comprise a regulation method of the route of the control valve core (5), a regulation method of a gap between the armature (4) and the electromagnet (3), and a regulation method of pretightening force of the return spring (10). The transverse-placing type electromagnetic control valve structure and the regulation methods thereof are applied to a diesel engine electronic unit pump and have the advantages of high response speed, good sealing reliability, regulation convenience and the like.

Disclosed is a device for fibre sorting or selecting of fasciculus containing textile fibre, the fasciculus is supplied to a fibre sorting device by means of a supplying device. The device is provided with clamping devices for clamping the fasciculus at a position having a certain distance with one free end thereof, a mechanical device used for carding from the clamping position to the free end of the fasciculus to loose and remove unclamped fibre components at the free end, and at least one peeling device for removing carded fibre materials, wherein each clamping device includes two clamping arms having jaws. In order to increase productivity and obtain improved carding strips, at least two continuous atwirl rollers provided with fasciculus clamping devices are arranged at the backward position of the supplying device, the fasciculus clamping devices are distributed at intervals on the circumference of the roller, at least one jaw of each clamping device is partially used for clamping light materials and the jaw is clamped on a clamping surface region with high friction coefficient.