71results about How to "Smooth retraction" patented technology

The invention relates to a scissor type door. The scissor type door comprises a rack, a power device, a crank, a first connecting rod, a main rocker arm, an auxiliary rocker arm, a sector-shaped door body and an inner door body. The sector-shaped door body is fixedly arranged on the auxiliary rocker arm so that the sector-shaped door body and the auxiliary rocker arm can jointly swing. The sector-shaped door body is hollow and is provided with a lateral opening. The inner door body is connected with the auxiliary rocker arm through a connecting rod mechanism arranged on the rack. When the auxiliary rocker arm swings around a rotating shaft, the auxiliary rocker arm drives the inner door body through the connecting rod mechanism to stretch out from or draw back into the lateral opening of the sector-shaped door body so that the sector-shaped door body and the inner door body can be switched between the stopping state and the releasing state. According to the scissor type door, the inner door body is driven by the connecting rod mechanism to stretch out or draw back; and compared with a sliding mechanism and a gear mechanism, the scissor type door has the beneficial effects of being low in friction and free of influences of foreign matter.

A linear actuator comprises an outer tube, an intermediate tube and an inner tube, and the tubes are all polygonal in cross section and are mounted orderly. The outer tube is disposed at the bottom thereof with a push device having a screw and a nut that are screwed with each other. The nut is engaged in the intermediate tube and is linked to move axially by the screw. The intermediate tube can be movably equipped with a pulling member, and the pulling member can link the inner tube to synchronously move in the axial direction. By such arrangements, the linear actuator allows the respective tubes to extend and retract axially relative to one another while preventing them from moving relative to one another in radial direction, thus achieving the stable and smooth axial movement.

There is disclosed a treatment device for an endoscope, comprising a treatment portion in which an operation wire is forward/backward moveably inserted into a main tube of an elongated flexible tube to be inserted into a body, a tip end of the operation wire forms a loop for treatment by itself in a projection state from the main tube, and the loop is adapted to be retractable and storable in the main tube, wherein the treatment portion is formed with a wire rope obtained by integrally intertwining a plurality of side strand wires with a core strand wire, and spiral convex or concave portions continuously disposed along the outer periphery of the wire rope are formed with the side strand wires.

A multi-drive apparatus for phase shifters is disclosed. The disclosed multi-drive apparatus for phase shifters includes: a main-axle gear; a multiple number of output shafts each connected to a phase shifter; a multiple number of output gears coupled with the output shafts; and a cam part having the output shafts arranged on its upper surface, where at least one recess is formed in the upper surface of the cam part, and when at least one of the output shafts is inserted into the recess according to a movement of the cam part, then an output gear coupled with the output shaft inserted into the recess engages the main-axle gear. With the disclosed multi-drive apparatus, it is possible to drive multiple phase shifters using just two motors.

A retractor includes a central fixed portion, an extended arm portion extending on both sides of the central fixed portion, and a hook support section which is attached to the extended arm portion so as to be slidable in a longitudinal direction and supports a retractor hook is formed of a plastically deformable composite member for, when receiving a deformation load of causing a bending deformation, permitting the extended arm portion to be plastically deformed in an in-plane direction Fh in a virtual plane F, which is formed of the central fixed portion and the extended arm portion, while restricting the extended arm portion regarding the deformation in an out-of-plane direction Fv.

The invention provides a telescopic device and a control method thereof. The telescopic device comprises telescopic columns, the telescopic columns are arranged in multiple stages, the telescopic columns are mutually sleeved, and anti-falling mechanisms are arranged between the telescopic columns; power devices which are arranged in multiple stages, the power devices are arranged in the telescopic columns, and the power devices are suitable for driving the telescopic columns to stretch out or retract step by step; and heavy load locking structures which are arranged at the joints of the telescopic columns of the adjacent stages and used for limiting the telescopic columns of various stages from retracting downwards. Compared with the prior art, the heavy load locking devices are arranged between the telescopic columns, so that every two telescopic columns are mutually locked, the telescopic columns can be directly borne, and the situation that the power devices are damaged due to the fact that the telescopic columns are borne only through the power devices is effectively avoided.

The invention relates to a box body lock and a meter box with the box body lock. The box body lock comprises a lock body, a lock cylinder, an inclined spring bolt and a lock catch, a rotating cavity is formed in the lock body, the lock cylinder is rotatably installed in the rotating cavity, a key hole is formed in the lock cylinder, a communicating hole corresponding to the key hole is formed in the surface of the lock body, the communicating hole communicates with the rotating cavity, and a spring bolt hole is formed in one side of the lock body. The telescopic inclined spring bolt is installed in the spring bolt hole in a sliding mode, a reset elastic piece is arranged between the inclined spring bolt and the lock body, the inclined spring bolt can stretch out and draw back to be matched with the lock catch on a door in a buckled mode, a connecting groove is formed between the spring bolt hole and the rotating cavity, a transmission mechanism is arranged in the connecting groove, and the lock cylinder drives the inclined spring bolt to stretch out and draw back through a transmission mechanism. Most of lock accessories are arranged in a door body, compared with a padlock, the lock accessories are not prone to being rusted, the inclined spring bolt can freely stretch out and draw back, and a worker can easily lock the door body and a door frame.

The invention relates to the 3D printing technology field, and discloses a 3D printer coaxial nozzle and a 3D printer with the same. An outer pipe, an inner pipe and a nozzle are included. The inner pipe is nested in the outer pipe, the nozzle is arranged at a lower end of the outer pipe, and a semiconductor refrigerator is arranged in a first pipe wall of the inner pipe. A nozzle heating device is arranged on a pipe wall of the nozzle, and is electrically connected with a power supply device and a control device. Because the outer pipe and the inner pipe are arranged, different printing materials can be injected into the two pipes at the same time. A semiconductor refrigerator is arranged in a first pipe wall of the inner pipe, and the semiconductor refrigerator has a function of heatingand refrigerating at the same time, and can be used for heating or refrigerating the printing materials in the outer pipe and the inner pipe respectively so as to ensure that the printing materials keep characteristics of the printing materials within a set temperature.