757results about "Leaf springs" patented technology

Provided is a method for manufacturing a pressure spring comprising a first plate spring and a second plate spring that extend in a length direction, wherein both end parts in the length direction of the first plate spring are stacked in a plate thickness direction on and joined to both end parts in the length direction of the second plate spring, intermediate parts in the length direction of the respective first plate spring and second plate spring face each other in a state of being separated from each other in the plate thickness direction, a length of the intermediate part of the second plate spring along a surface of the second plate spring as viewed from a plate width direction is shorter than a length of the intermediate part of the first plate spring along a surface of the first plate spring as viewed from the plate width direction, and, in the intermediate part of the first plate spring, a stress in the direction of stretching along an outer surface of the first plate spring as viewed from the plate width direction is applied to the outer surface side that is the opposite side to the second plate spring along the plate thickness direction. The method performs a joining step for joining both end parts in the length direction of the first plate spring to a long second plate spring material configured by integrally connecting a plurality of second plate springs in the length direction, and a cutting step for cutting at least the second plate spring material to obtain a pressure spring, in this order.

The invention belongs to the technical field of low-frequency vibration control, and provides a low-frequency tuned mass damping device for reversely stretching a compression spring in order to solve the problem that a traditional tuned mass damper is limited in use of a vertical space due to too large net deformation of the spring under the low-frequency condition. According to the device, large compression deformation and reverse tensile deformation of the spring are fully realized in a limited vertical space in a manner of performing super-compression-reverse tensile treatment on the compression spring, relatively low rigidity required by a vibration system is achieved, low-frequency tuning can be realized in the limited vertical space of a bridge girder, and the rigidity of the vibration system is improved. The frequency application range of the tuned mass device is greatly expanded; and meanwhile, the problems that the stability problem is caused when a traditional compression spring mass body is arranged on the spring and the damping is too high and unstable due to the fact that a guide component is added are solved. The device is simple in structure, low in damping, low in space requirement and good in stability, and can be applied to vertical, lateral and torsional multi-type low-frequency vibration control of various engineering structures.

The embodiment of the invention discloses a rotating mechanism and a foldable display terminal, and relates to the field of electronic products. The rotating mechanism comprises a base and two door plate assemblies located on the two opposite sides of the base. The door plate assembly comprises a door plate body, the door plate body is provided with a first arc-shaped sliding groove, the base comprises a first sliding block matched with the first arc-shaped sliding groove, and the first sliding block is installed in the first arc-shaped sliding groove. The at least one door plate assembly further comprises a first extrusion part, the first extrusion part is installed on the base, the first extrusion part extrudes the door plate body in the first target direction, and the first target direction is perpendicular to the sliding direction of the first sliding block and points to one side wall, facing the first arc-shaped sliding groove, of the first sliding block. Through the arrangement, the first extrusion piece has an extrusion effect on the door plate main body, and the first extrusion piece can extrude the door plate main body towards one side wall of the first arc-shaped sliding groove, so that the fit clearance between the first sliding block and the first arc-shaped sliding groove is reduced, and the phenomenon that the rotating mechanism shakes in use is improved.

The invention relates to a stepped-structure three-level rigidity non-equal-length automobile suspension steel plate spring and a design method thereof, and belongs to the technical field of steel plate springs. The device is of a step structure and comprises a first-stage plate spring, a second-stage plate spring and a third-stage plate spring which are arranged from top to bottom, and the action lengths of the first-stage plate spring, the second-stage plate spring and the third-stage plate spring are sequentially reduced. The three-stage stepped plate spring support is arranged in a matched mode, and the first-stage plate spring, the second-stage plate spring and the third-stage plate spring are designed in different parabolas; according to the method, it is guaranteed that the inherent offset frequency of the plate spring is always within a reasonable range from the no-load process to the full-load process, and therefore the consistent comfort of the empty vehicle and the full-load vehicle is guaranteed; the three plate spring pieces reasonably distribute the design stress of each stage of plate spring according to the load change borne by each plate spring piece, and the equal-strength and equal-service-life design of each stage of plate spring is guaranteed; except for the middle part, all the stages of plate springs do not make contact with one another, friction between pieces is eliminated, the dynamic stiffness is reduced, and the plate spring vibration reduction effect is improved.

The present invention relates to a vibration damper. The vibration damper comprises a spoke spring damper, wherein the spoke spring damper includes a central part, several spoke springs, and an outer ring part, the outer ring part radially surrounding the central part coaxially, the several spoke springs being arranged radially between the outer ring part and the central part and spaced apart from one another in the circumferential direction, the several spoke springs being elastically deformable and thereby allowing rotation of the outer ring part relative to the central part. The vibration damper further comprises a cover plate, the cover plate being fixed to the axial side of the central part and being rotatably in contact with the outer ring part, either directly or indirectly, so that when the outer ring part rotates relative to the central part, the cover plate can come into direct or indirect frictional contact with the outer ring part.The vibration damper of the present invention exhibits an improved damping effect.

The present invention relates to a spring seat attachment assembly for an axle / suspension system having at least one leaf spring and an axle, the attachment assembly comprising a band and a spring seat. The band may include a locator structure and is secured to the axle and extends between 180 degrees and 360 degrees around a portion of the axle. The spring seat receives the leaf spring and is secured to the band.

The utility model discloses a wear-resistant belleville spring, relates to the technical field of belleville springs, and aims to solve the problems that in the prior art, when a plurality of traditional belleville springs are combined for use and bear load for buffering, friction can be generated among the plates, so that the belleville springs are worn, the service life is shortened, and the maintenance cost is increased. The outer side of the center column is sleeved with a plurality of belleville spring sets, each belleville spring set comprises a first belleville spring body and a second belleville spring body, the first belleville spring bodies and the second belleville spring bodies are both conical disc-shaped plates, the large-diameter end faces of the first belleville spring bodies and the large-diameter end faces of the second belleville spring bodies face each other, and the large-diameter end faces of the first belleville spring bodies and the large-diameter end faces of the second belleville spring bodies face each other. A plurality of compression springs are arranged between the first belleville spring body and the second belleville spring body and annularly distributed along the circumference of the center column, and an upper fixing seat is fixedly mounted above the compression springs and fixedly connected with the first belleville spring body.

To provide a method for separating a balance spring, based on mechanically crushing the balance spring.SOLUTION: One aspect of the invention relates to a tool (100) for separating plates (123) of a balance spring (1, 2, 3) after winding. The tool has substantially parallel lower and upper rolling surfaces (4, 5) that are movable vertically or longitudinally relative to one another to deform the plate (123) by ovalization to cause the plate (123) to undergo a rolling movement between the rolling surfaces (4, 5). The invention further uses this tool (100) to separate the balance springs (1, 2, 3) from the plates and mechanically crush the balance springs within their elastic range, initiating the sequence of compressing and rolling the plate (123).SELECTED DRAWING: Figure 2

This spring member includes a first surface and a second surface opposite to the first surface, and includes three or more thin wires in a cross section orthogonal to the first surface. Among the thin wires, the thin wires positioned at both ends are outer thin wires, and the thin wire between the outer thin wires is an inner thin wire. The inner thin wire has a width of 10 μm or more at the first surface and the second surface. At the first surface and the second surface, the outer thin wires have a width that is greater than the width of the inner thin wire by 2 μm to 8 μm.

A wear pad having a sacrificial surface is disposed between a leaf spring in a leaf spring suspension system of a vehicle and a portion of a mounting bracket coupled to the leaf spring. The sacrificial surface is configured to contact the leaf spring and wear down in response to movement of the leaf spring. The sacrificial surface is configured to protect at least one of the portion of the mounting bracket and the leaf spring from frictional wear-and-tear.

A vibration damper, comprising a spoke spring buffer (10), wherein the spoke spring buffer (10) comprises a center portion (11), a plurality of spoke springs (12) and an outer ring portion (13), the outer ring portion (13) coaxially surrounds the radial outer side of the center portion (11), the plurality of spoke springs (12) are respectively radially connected between the outer ring portion (13) and the center portion (11) and are circumferentially arranged at intervals, and the plurality of spoke springs (12) can elastically deform to allow the outer ring portion (13) to rotate relative to the center portion (11); and further comprising a cover plate (20), wherein the cover plate (20) is fixed on an axial side of the center portion (11), and can directly or indirectly abut against the outer ring portion (13) in a relative rotation manner, such that when the outer ring portion (13) rotates relative to the center portion (11), the cover plate (20) can be in direct or indirect frictional contact with the outer ring portion (13), thereby reducing the risk of deformation of the spoke spring buffer (10) toward an axial side.

Motor-vehicle suspension system (1), comprising a transversal leaf spring (2) arranged transversely with respect to the longitudinal direction of the motor-vehicle, connected to the motor-vehicle structure by means of two elastic blocks (5) symmetrically arranged at respective intermediate portions (2''') between the center of the leaf spring (2) and its end portions (2''), said transversal leaf spring (2) being configured as a foil spring adapted to oppose the vertical movements of the two wheel supports (4). The suspension system (1) also comprises a transversal active block (17) comprising: - a support body (18) having opposite end parts (18') connected to the elastic blocks (5) and a main part (18'') extending along a central portion (2') of the foil spring between the two elastic blocks (5), - an elastomeric component (19) mounted on said main part (18''), defining an internal chamber fillable with a pressurized fluid, connectable to a pressurized fluid supply system, - wherein said elastomeric component (19) is activated following filling of the internal chamber, to switch from an inactive configuration in which the outer surface of the foil spring is not in contact with the elastomeric component (11), to an active configuration in which the elastomeric component (19) has an enlarged volume for creating an abutment surface in contact with the foil spring.

Motor-vehicle suspension system (1), comprising a transversal leaf spring (2) arranged transversely with respect to the longitudinal direction of the motor-vehicle, connected to the motor-vehicle structure by means of two elastic blocks (5) symmetrically arranged at respective intermediate portions (2''') between the center of the leaf spring (2) and its end portions (2''), said transversal leaf spring (2) being configured as a foil spring adapted to oppose the vertical movements of the two wheel supports (4), wherein each elastic block (5) comprises: - an outer reinforcement (10), - at least two elastomeric components (11) included inside the outer reinforcement (10), mutually placed side by side along the longitudinal direction of the leaf spring (2) and surrounding the leaf spring (2) along all its sides at said intermediate portion (2'''), wherein said at least two elastomeric components (11) respectively shape an internal chamber fillable with a pressurized fluid, - a valve body (17) having an inlet port (17') connectable to a pressurized fluid supply system and at least two outlet ports (17'') respectively in communication with said at least two elastomeric components (11), - wherein said at least two elastomeric components (11) are selectively activated by filling the internal chamber, to pass from an inactive configuration in which the outer surface of the leaf spring (2) is not in contact with the elastomeric component (11), to an active configuration in which the elastomeric component (11) has an enlarged volume for creating a grip effect on the leaf spring (2) at said intermediate portion (2''').

To provide a highly reliable vibration isolation device capable of isolating vibration in various direction inexpensively over a wide range through simple adjustment and capable of easily controlling vibration absorption performance and damping performance.SOLUTION: A vibration isolation device includes: a bolt; a first disc spring having a first insertion hole, a first inner peripheral part and a first outer peripheral part; a second disc spring having a second insertion hole, a second inner peripheral part and a second outer peripheral part; a sleeve including a pair of end surfaces through which a bolt is inserted, that oppose to each other in the axial direction and on which the first inner peripheral part and the second inner peripheral part are nipped, respectively by using a fastening tool; and a fixation plate in which the first outer peripheral part and the second outer peripheral part are fixed in an overlapped state and a displacement region of the bolt and the sleeve is opened. The first disc spring has a plurality of first vibration isolation bodies, and the second disc spring has a plurality of second vibration isolation bodies. When vibration is input to the bolt via a vibration isolated member, each of the first vibration isolation bodies and each of the second vibration isolation bodies absorb the vibration and damp the vibration, respectively at positions apart from the sleeve.SELECTED DRAWING: Figure 2

The invention provides a heat treatment method of a disc spring and the obtained disc spring, and belongs to the technical field of disc spring preparation. The heat treatment method of the disc spring comprises the following steps that (1) the surface of the disc spring is cleaned, and the cleaned disc spring is obtained; (2) the surface of the cleaned disc spring is coated with a coating and dried, and the disc spring coated with the coating is obtained; (3) the disc spring coated with the coating is subjected to heat treatment, and the disc spring subjected to heat treatment is obtained; and (4) after the disc spring subjected to heat treatment is cooled to the room temperature, the coating is removed. After the heat treatment method provided by the invention is used for treating the disc spring, the disc spring can be uniformly heated without cracks in the heat treatment process, and the pressure value of the disc spring is excellent.

The invention relates to a composite belleville spring, a mold for production and a production method, and relates to the technical field of belleville springs.The composite belleville spring comprises a body and a sleeve, a rubber layer is arranged on the body, bayonets are formed in the body and the rubber layer, and clamping strips matched with the bayonets are arranged on the sleeve. The disc spring has the advantage that the number of single disc springs can be increased or decreased conveniently when the disc springs are stacked for use.

The invention provides a variable load quasi-zero stiffness vibration isolator based on an electromagnetic actuator, and belongs to the field of low-frequency vibration isolation. Comprising a supporting structure composed of a shell and a bearing platform, a positive stiffness element, a negative stiffness element and an electromagnetic actuator, the positive stiffness element, the negative stiffness element and the electromagnetic actuator are coaxially installed in the supporting structure, load gravity on the bearing platform is detected in real time through a force sensor, and output force of the electromagnetic actuator is dynamically adjusted through a control circuit according to load changes. And the rigidity of the system at the balance position is zero so as to complete self-adaptive variable load compensation. According to the parallel structure, the dynamic stiffness is remarkably reduced while high static stiffness is guaranteed, and the problems that a traditional quasi-zero stiffness vibration isolator is non-adjustable in load and narrow in zero stiffness interval are solved.

Leaf springs for use in a firearm magazine are described. The leaf springs comprising an inner edge, an outer edge, and a channel, and configured to facilitate movement of cartridges within a feed tower of the firearm magazine. The leaf springs can be in a flexed or unflexed position, wherein downward movement of the cartridges in the feed tower outwardly flex the leaf springs into the flexed position to facilitate downward translation of the cartridges by forcing the inner edge of the leaf springs away from the cartridges, and in the unflexed position, the inner edge of the leaf springs is parallel or substantially parallel to an edge of the cartridges in the feed tower.

The utility model provides a corrosion-resistant movable contact spring, which relates to the technical field of movable contact springs and comprises a movable contact spring body, a Z-shaped elastic sheet is mounted at the top of the movable contact spring body, a measuring sheet is mounted on the side surface of the movable contact spring body, a laser transmitter is mounted on one surface of the inner side of the measuring sheet, and the laser transmitter is mounted on the other surface of the inner side of the measuring sheet. A laser receiver is installed on the side, away from the laser transmitter, of the inner side face of the measuring piece, an elastic rubber sleeve is installed on the surface of the movable contact spring body, a reinforcing piece is installed on the inner side of the movable contact spring body, and a sealing ring is installed on the surface of the reinforcing piece. The movable contact spring body is composed of a protective layer, a stainless steel base body, an anti-corrosion layer, a passivation layer and an anti-rust layer in sequence from top to bottom, so that the overall corrosion resistance of the movable contact spring is improved, and the service life of the movable contact spring is prolonged.

The invention provides a variable stiffness spring and a design method thereof. The variable stiffness spring comprises an outer sleeve and an inner sleeve. The outer sleeve sleeves the outer side of the inner sleeve, the outer sleeve and the inner sleeve are in sliding connection, and a telescopic cavity is formed in the outer sleeve and the inner sleeve. And a wave spring is mounted in the telescopic cavity. The two ends of the wave spring abut against the outer sleeve and the inner sleeve respectively. The wave spring is spirally arranged along the axis of the outer sleeve. The wave spring is arranged in the telescopic cavity formed in the outer sleeve and the inner sleeve, the wave spring can be prevented from being interfered by dust, gravel and oil dirt, the service life of the wave spring is prolonged, the telescopic cavity limits the deformation direction of the wave spring, deflection or torque of the wave spring is avoided, it is ensured that the wave spring provides stable elastic force, and the stability of a system is improved.

A rotation stop device for a rotatably mounted shaft, having a stationary stop body and a transmission which converts the rotational movement of the shaft into a linear movement of a driven element relative to the stop body, and having a stop element which can be moved by the driven element into a stop position in which it bears against the stop body. The stop element is coupled to the shaft in a rotationally fixed and axially displaceable manner by a linear guide.

Systems and methods for maintaining autonomous vehicle operator awareness are provided. A method can include determining, by a computing system, an awareness challenge for an operator of a vehicle. The awareness challenge can be based on object data. The awareness challenge can have one or more criteria. The criteria can include a challenge response interval, a response time, and an action for satisfying the awareness challenge. The method can include initiating, by the computing system, a timer measuring elapsed time from a start time of the challenge response interval. The method can include communicating to the operator, by the computing system, a soft notification indicative of the awareness challenge during the challenge response interval. The method can include determining, by the computing system, whether the operator provides a user input after the response time interval and whether the user input corresponds to the action for satisfying the awareness challenge.

The present application belongs to the technical field of low-frequency vibration control, and aims at the problem that the traditional tuned mass damper is limited in vertical space use due to the excessive spring net deformation under low-frequency conditions, and provides a low-frequency tuned mass damper device which reversely stretches the compression spring. The device fully realizes the compression large deformation and reverse stretching deformation of the spring in the limited vertical space through the way of over-compression and reverse stretching of the compression spring, so as to achieve the required low stiffness of the vibration system. The low-frequency tuning can be realized in the limited vertical space of the bridge girder, and the frequency application range of the tuned mass device is greatly expanded. At the same time, the stability problem of the traditional compression spring mass body placed on the spring and the problem of excessive and unstable damping caused by the increase of the guide component are avoided. The device has simple structure, low damping, low space requirement and good stability, and can be applied to vertical, lateral and torsional multi-type low-frequency vibration control of various engineering structures.

SOLUTION: A plate spring 28 includes a disc member 30 and a plurality of claws 32 provided on the disc member, positioned between an outer peripheral end 30t2 of the disc member and an inner peripheral end 30t1 of the disc member, and arranged along a circumferential direction CD of the disc member, wherein each of the plurality of claws extends along a radial direction RD of the disc member and warps in a thickness direction TD of the disc member.SELECTED DRAWING: Figure 3

The present invention relates to a damping system for an article including a rigid support having at least one reception face extending along a plane, and a spring blade including a first end and a second end. A first means of assembling the article includes a first end with the rigid support. The blade extends along the rigid support on a convex path so that said second end is put in contact with said reception face and is able to move in said plane during compression and / or relaxation of said blade.

The present invention relates to a suspension system for a vehicle having composite springs, which may include: a first longitudinally mounted spring 10 and a second longitudinally mounted spring 20, which generate the vertical stiffness of the vehicle; and a laterally mounted spring 30, which generates the roll stiffness and is connected to the first longitudinally mounted spring and the second longitudinally mounted spring. In particular, the laterally mounted spring 30 is connected to the vehicle body 1 through a support member 40. The stiffness of the vehicle can be further enhanced during the longitudinal behavior and the roll behavior of the vehicle, and thus, the driving stability can be significantly improved.