52results about How to "Reduce support stiffness" patented technology

To provide a vacuum pump capable of evacuating in pressure ranges from an atmospheric pressure to a high vacuum, capable of rotating at a high speed to be downsized and improved in pumping performance, and capable of producing a completely oil-free vacuum.

A vacuum pump for exhausting a gas comprises: a main shaft 5 rotatably supported by a bearing 22; a motor 23 for driving the main shaft 5 for rotation; a first exhaust section 10 having a first rotary vane 13 attached to the main shaft 5, a first fixed vane 14 fixed in a first casing 12, and an intake port 11; and a second exhaust section 30 having a second rotary vane 33 attached to the main shaft 5, a second fixed vane 34 fixed in a second casing 32, and an exhaust port 31. The intake port 11 is located in the vicinity of an end of the main shaft 5, and the first exhaust section 10, the bearing 22 and the second exhaust section 30 are arranged in this order axially along the main shaft 5.

The invention discloses an elastic vibration-reduction ballast bed system, which comprises a concrete ballast bed and a low-frequency vibration isolator installed in the concrete ballast bed. An elastic mechanism in the low-frequency vibration isolator consists of a positive stiffness elastic element made of metal rubber or the positive stiffness elastic element and a negative stiffness elastic element which are connected in parallel. The positive stiffness elastic element is a disc spring, a spiral spring, the metal rubber, a metal rubber-spring armour, a metal rubber-lead core composite spring or any series-parallel combination of the disc spring, the spiral spring, the metal rubber, the metal rubber-spring armour and the metal rubber-lead core composite spring. The negative stiffness elastic element is a disc spring or a diaphragm spring. The elastic vibration-reduction ballast bed system can meet requirements of middle-high-grade vibration reduction and has a simple structure. The site construction process is simple and convenient, and consumed materials of the ballast bed are relatively reduced. Therefore, the elastic vibration-reduction ballast bed system is low in construction cost and suitable for popularization and application in the whole line.

A lathe 1 comprises a bed 5, a headstock 10 having a housing 13 and a support base 14, a main spindle 11, a first tool rest 44, and a second tool rest 50. The support base 14 is formed so as to have a concave portion 14a on the upper portion thereof and so that the upper portion protrudes toward the second tool rest 50. The tool rest body 51 of the second tool rest 50 is configured so as to be movable into and out of a space formed downward from the upper portion of the support base 14. The housing 13 has a holding hole 13a for rotatably holding the main spindle 11, and installation portions 13b. The installation portions 13b are supported on the support base 14 in a state wherein a predetermined clearance is provided between the housing 13 and the concave portion 14a.

The invention discloses a biaxially resonant silicon-micromachined accelerometer in the shape of a Chinese character 'tian' and aims at designing and manufacturing a high-sensitivity and high-resolution biaxially-resonant silicon-micromachined accelerometer. The structure is characterized in that (1) because a mass block structure in the shape of a Chinese character 'tian' is adopted, the volume of a mass block is maximized, and the acceleration can be converted into an inertial force more effectively; and the whole structure is symmetrically distributed, which is favorable for resisting noises and inhibiting temperature drift; (2) a support beam (in the shape of a Chinese character 'ji') arranged at the periphery of the structure facilitates the release of the residual stress and temperature stress of the structure, thereby reducing the support stiffness of the structure in a sensitive direction; (3) due to the application of a spring-like beam (in the shape of a Chinese character 'kou') at one end of a resonator, the influence of external shocks on the beam is reduced, and the spring-like beam plays a role in releasing the residual stress of the structure; and (4) an arc structure at the root part of a tuning fork in the resonator can be used for effectively reducing the energy coupling and improving the mechanical quality factor of the resonator, and is easy for realizationof closed-loop control.

An elevator includes guide rails (2) laid in an elevator shaft vertically, an elevator car (3) moving up and down along the guide rails, guiding units (6) provided on the elevator car for guiding it, the guiding unit having a magnet unit including cores (11) and coils (12) forming electromagnets to generate a magnetic force against the guide rail through an air gap and a controller (21) for controlling the magnetic force by maneuvering an exciting current for exciting the electromagnets. The controller (21) controls the magnetic force so as to make the guiding units in non-contact with the guide rails when the elevator car is traveling and brings the guiding units into contact with the guide rails when the elevator car is stopped, so that the guiding units attract and fix the guide rails while the elevator car is stopped.

An infrared radiation detecting device is provided that comprises a substrate, an infrared radiation absorbing unit, at least one support beam and a thermopile. The at least one support beam has a first end portion coupled to the substrate and a second end portion coupled to the infrared radiation absorbing unit. The thermopile includes first and second electrical conductors disposed on the support beam with the first and second electrical conductors having different electric conductivities. The first and second electrical conductors is dimensioned and shaped to improve structural rigidity of the support beam in comparison to an identically shaped support beam including a thermopile with a pair of first and second electrical conductors that are identically shaped and disposed parallel to each other.

A touch sensor film preventing moire occurring in accordance with deformation of a support is manufactured by performing roll transportation of an elongated transparent support 1 having a thickness smaller than 80 μm using a plurality of pass rollers 4, 5, and 6; performing annealing treatment with respect to the support 1 at a temperature which is equal to or lower than a temperature obtained by adding 35° C. to a dynamic glass transition temperature of the support 1; and forming a mesh pattern formed of thin metal wires 8a on a surface of the support 1 subjected to the annealing treatment.

A seatback of a vehicle seat includes a seatback frame and a backrest attached to the seatback frame. The backrest includes a first supporting area configured to receive a load of a shoulder of the occupant, and a second supporting area configured to receive a load of a spine area of the occupant. Support stiffness in the first supporting area for a vertical load is lower than that in the second supporting area. Support stiffness in the second supporting area for a shearing load is higher than that in the first supporting area.

A front-end module (FEM) having in-vehicle parts incorporated in a vehicle front section are aggregated and assembled to a heat exchanger support frame, the plurality of in-vehicle parts are classified into first in-vehicle parts, which vibrate at frequencies in a first frequency band, and a second in-vehicle part, which vibrates at a frequency in a second frequency band having a frequency range higher than the frequency range in the first frequency band. The first in-vehicle parts are elastically supported by the heat exchanger support frame via first mount members. The second in-vehicle part is rigidly fixed to the heat exchanger support frame. The heat exchanger support frame is elastically supported by a vehicle body via second mount members.

The invention discloses a self-resetting energy consumption inhaul cable support which comprises a pulley, a pulley base, a prestress reset rib, an anchorage device, a limiting plate, a sliding frame, a bottom plate, a high-strength steel cable, a friction plate, a steel base plate and a connecting plate. The pulley is fixed to the pulley base. The pulley base is fixed to a main structure through a bolt. One end of the prestress reset rib is anchored to the limiting plate through the anchorage device. The other end of the prestress reset rib winds around the pulley, and builds prestress through a post-tensioning method to be connected with the sliding frame. The self-resetting energy consumption inhaul cable support has the advantages that the resetting capability of the support is enhanced exponentially, or the selection range of the reset rib material is widened exponentially, the structure complexity degree of the support is simplified, and the working performance of the support is ensured; 2, the cross section of the support is reduced, and therefore the earthquake effect is effectively reduced; 3, the yield stiffness designability is provided for the support.

The invention discloses a mechanical vehicle active suspension device, which overcomes the defects that a device adopting an electronic technology has a control system costing 3,000 dollars and the maintenance cost is high in the prior art. The device is characterized in that: a diaphragm (C) is arranged between a reference chamber (A) and an air spring auxiliary chamber (B) with an inertia switch (5) through a pipeline; and the reference chamber (A), the air spring auxiliary chamber (B) and an air spring main chamber (D) are connected through a pipeline. The mechanical vehicle active suspension device has the advantages that: the diaphragm (C) takes pressure difference of the two chambers as a control signal and driving power to automatically adjust the suspension rigidity in a mechanical mode; the inertia switch (5) can instantaneously change the suspension rigidity, cut off a control switch and solve the contradiction of operability and comfortableness; a hole on a ball (16) realizes the cut-off function in any direction; the pipeline connection is skillful, complicated and unique, so that the functions are realized and are not interfered mutually; a complicated process does not exist, the device is easy to promote and apply, and great reformation of the vehicle suspension device is provided; and the device is used for vehicle suspension.

First vibrating arms extend along a first direction from a base portion. Second vibrating arms extend along a second direction from the base portion. First suspension arms extend from a fixed portion and are connected to first connecting parts of the base portion. Second suspension arms extend from the fixed portion and are connected to second connecting parts of the base portion.

Under control of rotation of a crankshaft 41, a friction roller 32 is pressed against a friction roller 31 in a radial direction, so as to achieve torque transmission between the rollers 31, 32. An inter-roller radial pressing reaction is canceled as an internal force in bearing supports 23, 25, with no input to a housing 11. The reaction causes a radial displacement of a bearing-fitting portion provided with inner and outer bearings 21, 42 in double layer arrangement, wherein the radial displacement is larger than that of a bearing-fitting portion provided with a bearing 18, 19, 22 in single arrangement, so as to cause unbalanced contact between rollers 31, 32. In order to prevent this, support stiffness of bearing support 23 against the inter-friction-roller radial pressing reaction is set higher than that of bearing support 25.

Provided is an engine device that can enlarge a space inside a case without lowering support stiffness. An engine (2) is attached to a case (11) via support parts (81, 82). A rear lower portion support part (82), which is one of the support parts, includes an attachment rib (11b) as a mounting part provided in the case (11) and an attachment bracket (91) fastened to a bottom of a crankcase (46) by a fastening bolt (90) and attached to the attachment rib (11b). The fastening bolt (90) penetrates through a through hole (92a) provided in the attachment bracket (91) and is screwed into a screw hole (46e) formed obliquely inward at a corner of the bottom of the crankcase (46).

A seal lip having: a cylindrical seal surface in close contact with an outer peripheral surface of an inner race with outer side and inner side surfaces standing upright respectively from an outer end and an inner end of the seal surface and reaching a lip supporting portion of a seal member, and protruding on an inner peripheral surface of the lip supporting portion. The outer side surface is a perpendicular surface standing upright from the outer end of the seal surface in a direction perpendicular to a generating line of the outer peripheral surface of the inner race. The inner side surface includes: a perpendicular surface standing upright from the inner end of the seal surface in parallel with the outer side surface; and a conical surface inclined toward the outer side surface extending outward in a radial direction from an outer peripheral end of the perpendicular surface.