40results about How to "Improve torque transmission" patented technology

An apparatus is provided having an active material forming a surface thereof in contact with a rheological fluid. The active material is controllable to vary a surface geometry thereof between a rough or nonsmooth surface geometry to increase drag, and achieve an increase in stress transmitted through the fluid, when a field is applied, while allowing a smooth surface geometry and an associated reduction in stress transmitted through the fluid when the field is removed. A method of enhancing performance of an apparatus that includes a rheological fluid is also provided.

A novel magnetic friction clutch is disclosed which is capable of relatively high torque transfer for friction discs of a given diameter, compared to prior art magnetic clutches. A friction coating with good magnetic permeability, such as Ferrous Aluminide or the like, is applied to inner and outer annular regions of the three friction discs and increases the frictional coefficient of the discs with little reduction in the clamping force developed through the clutch.

A continuously-variable transmission includes two transmission members each having coupling elements engageable to couple the transmission members for movement together. At least one of the transmission members is a rotary member rotatable about a rotary axis; and at least one of the groups of coupling elements is radially displaceable towards and away from the rotary axis to change the conversion ratio of the transmission. The coupling elements of one group on one transmission member are of a fixed configuration defining projections alternating with depressions each of a fixed configuration formed on a surface of the transmission member between opposite side faces and having the same pitch for every cross section of the surface perpendicular to the mentioned rotary axis. The coupling elements of the other group are of a self-adaptive configuration, each movable in opposite directions to adapt itself to the configuration of the fixed-configuration coupling elements in all displacement positions of the radially-displaceable coupling elements and to effect a non-slip coupling therewith.

An easily structured swing internal contact type planetary gear device is proposed which can achieve a higher meshing ratio when an involute tooth profile is adapted. Each of an internal tooth of an internally toothed gear wheel and an external tooth of an externally toothed gear wheel is formed with an involute tooth profile. Under a driving condition, one of an internal tooth body of the internally toothed gear wheel and an external tooth body of the externally toothed gear wheel is elastically deformed in an extending direction and the other thereof is elastically deformed in a contracting direction so that the number of meshing teeth becomes larger than the number of meshing teeth under a non-driving condition.

A magnetic friction clutch has two clutch parts, supported so that they can rotate relative to each other around an axis of rotation. A first clutch part has at least two clamping jaws which are movable somewhat toward and away from each other. A second clutch part, situated between the clamping jaws, is of disk-shaped design. The clamping jaws are pressable against the second clutch part by the magnetic force of a variable magnetic flux which is carried in the clutch parts in a soft magnetic material, in order to form a frictionally engaged connection between the clutch parts. The second clutch part has a plurality of soft magnetic ring zones permeated by the magnetic flux, which extend in the circumferential direction and are separated from each other in the radial direction by slots running in the circumferential direction. Ring zones adjacent to each other in the radial direction are connected with each other by bridging links. The slots are filled with a solidified casting material that connects the ring zones with each other. Inner and / or outer circumferential surfaces of the ring zones that face each other follow a line that deviates from a circular line running concentric to the axis of rotation. The second clutch part can have a plurality of layers made of different soft magnetic materials.

The invention discloses an electrical connector, comprising: an electrical connection device, including a first electrical connection terminal and a second electrical connection terminal that are mated and plugged; The transmission shaft and the second transmission shaft on the outside of the second electrical connection terminal; one end of the first transmission shaft is fixedly connected with the coaxial first rotary terminal, and a transmission key is arranged on the outside; one end of the second transmission shaft is fixedly connected with the coaxial The inner side of the hollow second rotary terminal is provided with a spirally descending curved guide surface, which is hollow inside and nested coaxially with the first rotary terminal. Under the guidance of the guide curved surface, the first rotary terminal rotates relative to the second rotary terminal so that the transmission key enters the transmission groove to achieve clamping, and drives the first electrical connection terminal to match and insert with the second electrical connection terminal. The invention can realize precise mechanical motion transmission while ensuring electrical connection.

The invention discloses an adjustable wrench, comprising a wrench body and a worm wheel; the wrench body includes a handle and a working part; the working part includes a fixed part, a movable part and a chute; the movable part The lower end of the movable part is set in the chute, and the bottom edge of the lower end of the movable part is provided with a tooth part; the working part also includes a through hole, and the worm wheel is set in the through hole and meshes with the tooth part; When the worm wheel is rotated, the worm wheel interacts with the tooth portion, thereby driving the movable portion to move toward or away from the fixed portion; the thread of the worm wheel has at least two helical lines. The adjustable wrench of the invention can quickly adjust the distance between the movable part and the fixed part, and increase the torque that the worm wheel can bear.

The invention relates to an endoscope guide wire, which solves the problem that the conventional guide wire is easy to break, the problem that the pushing capacity is poor, the problem that the position into which the guide wire is inserted is difficult to judge and the like. The endoscope guide wire comprises a metal core wire and a visual identification mark covered on the surface of the metal core wire. The technical key points of the endoscope guide wire include: the metal core wire is made of an integrative elastic metal wire without a junction surface; the visual identification mark is arranged between the end part of a base section and the front end of a conical section of the metal core wire, and comprises a direct viewing mark part and an X-ray developing part; the direct viewingmark part is formed by a first direct viewing mark color ring, a second direct viewing mark color ring and a third direct viewing mark color ring which are connected alternately and have different colors; the X-ray developing part is formed by X-ray developing metal or an X-ray developing agent-containing envelope; and an ultrathin hydrophilic coating is covered on the surface of the visual identification mark. The endoscope guide wire has a reasonable structure; and on the basis of ensuring the direct vision and X-ray visuality which are required by the endoscope guide wire, the pushing capacity, sliding performance and the like of the guide wire inserted into an endoscope channel are improved comprehensively, and the operability and safety of the endoscope guide wire are improved obviously.