摘要:
The high-performance sliding rack ratchet tensioner is inexpensively manufactured. A rack having rack teeth is slidingly received in a rack slot on the side of the piston. The rack slot is preferably open-ended on the end facing the tensioner arm. The rack and piston are both received in a piston bore in the tensioner body. The rack length is preferably shorter than the rack slot length to provide backlash. A pawl mounted in a pawl bore perpendicular to the rack bore engages the rack. The open-ended rack slot allows the rack to be inserted after the piston during assembly. The rack and pawl preferably have shark fin-shaped teeth. The pawl preferably has dummy teeth to ensure that the load is shared by the center teeth.
摘要:
A friction drive actuator, comprising: a vibration member which is configured to be driven to vibrate by expansion and contraction of a piezoelectric displacement portion which is included in the vibration member and driven by a driving signal; a sliding member which is in contact with the vibration member and is driven by the vibration member in a first direction with respect to the vibration member; a pressing member which causes the vibration member and the sliding member to come into a pressure contact therebetween; and a control member which is provided on each of the vibration member and the sliding member at a contact portion therebetween for controlling a relative movement of the sliding member with respect to the vibration member in a direction perpendicular to the first direction when the vibration member and the sliding member are pressedly contacted with each other by the pressing member.
摘要:
Locking arrangement for locking a first element which is movably mounted in a first direction, by means of a second element which is movably mounted in a second direction transversely with respect to the first direction. First element has a toothed contour with at least two teeth and a tooth gap which lies between. Second element has a projection which has a projection length which is shorter than the tooth gap length. The projection can be introduced into tooth gap when there is movement in the second direction, to lock the first element. Each tooth has a face which points towards the second element and has a first contour. Projection has a face which points towards the first element and has a second contour. First and second contours are matched to one another so that the projection is deflected by the teeth from becoming inserted into tooth gap if first element moves faster than a predetermined locking speed and slower than a maximum speed of first element.
摘要:
A park brake includes a brake lever that is movable about a primary and secondary pivot. The brake lever selectively rotates about the primary and secondary pivots changing a ratio of rotation of the brake lever relative to a cable.
摘要:
A hub for a bicycle includes a shaft (12), a hub body (40), a ratchet wheel (43), a drive seat (10), a support ring (15), a rotation ring (21), a plurality of pawl members (22), a stop bushing (121), a limit ring (30) and a damper (33). Thus, when the drive seat is rotated backward by the pedal, each of the pawl members is retracted into the respective receiving slot (212) of the rotation ring to disengage the oneway ratchet teeth (43) of the ratchet wheel, so that each of the pawl members is spaced from and will not touch the ratchet wheel when the pedal is driven backward to prevent from producing a noise when the pedal is driven backward.
摘要:
A drive assembly, particularly for driving arms around a compartment in a waste material digester, comprises a rotatable hub having an inner drive plate and a ratchet plate secured thereto for rotation therewith. Positionally opposed, parallel piston and cylinder drive reciprocatably drive an outer drive plate, drive arms pivotally carried on the outer drive plate engaging with drive pins on the inner drive plate to drive the hub in one direction. Movement of the hub in the opposite direction is prevented by latches engaging with respective shoulders of the ratchet plate when the outer drive plate moves in said opposite direction.
摘要:
Automotive push-pull type transmission shift cable assemblies are disclosed that meet new specifications for extended performance at high temperatures, including certain embodiments suitable for use at elevated temperatures of at least 165° C. The cable comprises a conduit and a core wire extending through the ends of the conduit to a shifter end portion and transmission end portion. The transmission end portion comprises a core wire length adjuster and a conduit end fitting. The core wire length adjuster comprises a core wire adjuster isolator and a retainer cap. At least certain embodiments of the transmission shift cable assemblies pass one or a combination of the following tests: a. Lash 200,000 Cycles Test, b. Attachment Pin Installation 200,000 Cycles Test, c. Attachment Pin Extraction 200,000 Cycles Test, and d. Cable Efficiency Test e. In-Vehicle Routing 165° C. Cable Strength Test.
摘要:
A ratchet device for an electrical component that can be adjusted by rotation, such as a rotary switch or a rotary potentiometer, is provided. The ratchet device includes a leaf spring, resting against a ratchet contour by means of spring pressure, whereby the ratchet contour is applied on an outer side of a symmetrical ratchet disc. The leaf spring substantially encloses the ratchet disc, rests diametrically on the ratchet disc, and the ends of the leaf spring have an essentially radial embodiment, the leaf spring being otherwise free to move.
摘要:
A linkage system is provided which is equipped with a compact and high-rigidity link mechanism with a large load capacity. The linkage system includes three or more link mechanisms. Each link mechanism consists of a center link member and end link members rotatably coupled to the center link member and to link hubs that are provided to an input member and an output member, respectively. An input side and an output side of a center cross-sectional plane of each link mechanism are geometrically identical. One or more of revolute joints of two or more of the link mechanisms that are coupled to the input member are provided with a stopping mechanism for stopping the output member at a given position.
摘要:
A tie rod jam nut includes a tubular body having an axial bore for receiving a tie rod. A locking portion at a first end of the body can engage the tie rod and a threaded portion of a connecting component attached to the tie rod to lock the connecting component to the tie rod as the locking portion is rotated in one direction and disengage the tie rod to unlock the connecting component when rotated in an opposite direction. An engagement portion is spaced distally from the locking portion toward a second end of the tubular body. The engagement portion can be rotated to remotely rotate the locking portion between the locked and unlocked positions.