78results about How to "Easy to change size" patented technology

An electronically updatable, tiled display having overlapping display elements is disclosed, wherein an entire viewing area of the tiled display is addressable, and the tiled display can be expanded, collapsed, folded, or rolled.

Disclosed is a process for producing a laminate, comprising (1) the step of providing a base substrate having a surface formed of a single crystal of a material different from a material for constituting an Al-based group III nitride single crystal layer to be formed, (2) the step of forming an Al-based group III nitride single crystal layer having a thickness of 10 nm to 1.5 mum on the single crystal plane of the provided base substrate, (3) the step of forming a non-single crystal layer having a thickness of not less than 100 times the thickness of the Al-based group III nitride single crystal layer on the Al-based group III nitride single crystal layer without breaking the Al-based group III nitride single crystal layer, and (4) the step of removing the base substrate. The production process can provide a substrate that is suitable for use as a base substrate for the production of a self-supporting substrate of an Al-based group III nitride single crystal, has a surface formed of a single crystal of an Al-based group III nitride, and is free from cracking and warpage.

The invention discloses a stereo digital mosaic imaging lens shifter and a method thereof. The shifter comprises light source equipment, an LCD fixing plate, a lens, a lens fixing plate, a motor, a slipping device and a base plate; the LCD fixing plate and the slipping device are installed on the base plate; an LCD display seat and an LCD image display are installed on the LCD fixing plate; the light source equipment is installed on the LCD display seat; the lens is installed on the lens fixing plate; and the lens fixing plate is installed on a slide plate through the slipping device. The invention further provides the lens shifting method which comprises the following steps: by using the motor to drive the lens to continuously move and drive images on the LCD image display to continuously change, stereo photographic materials on a paper feeding platform are projected and photosensitized for a plurality of times; and through manually adjusting the lens fixing plate to move up and down, the focal length of the lens is focused. The shifter with the advantages of simple structure, convenient operation and high movement precision can conduct stereo multiple projection sensitization.

The invention discloses tissue engineering skin with a layered structure and a preparation method of the tissue engineering skin, and relates to the technical field of tissue engineering skin. The tissue engineering skin with the layered structure comprises a collagen layer, a collagen layer embedded in human skin fibroblast, a first multilayer collagen layer, a collagen layer embedded in keratinocyte and a second multilayer collagen layer. According to the tissue engineering skin disclosed by the invention, a manner that channels are innovatively generated in tissues by a temporary material such as gelatin is adopted, and human umbilical vein endothelial cells are adhered to the inner parts of the channels, so that the formed blood vessels are better fit with human body blood vessels; thetransporting and distributing rate of the formed blood vessels is increased; cells have higher viability and high multiplication rate; the printed skin with the layered structure is adopted, so thatthe interaction between cells of the formed skin structure and the interaction of the skin tissues and epimatrix are more stable, and regeneration of the skin tissue is facilitated.

A contactor configured to be electrically connected to the terminals of an electronic component is disclosed. The connector includes multiple contact electrodes contacting the terminals of the electronic component and multiple elastic electrodes each composed of an electrically conductive elastic body. The elastic electrodes generate a pressing force for pressing the contact electrodes against the terminals of the electronic component. The contact electrodes are separable from the elastic electrodes.

The invention discloses a fruit and vegetable screening machine. The fruit and vegetable screening machine comprises a supporting frame, wherein a guide plate is arranged above the supporting frame; the top of the guide plate is provided with a feeding box; front and rear ends of the guide plate upwards extend to form baffle plates; a plurality of guide baffle plates are arranged between the baffle plates; a guide channel is formed between every two guide baffle plates; ends, away from the feeding box, of the guide baffle plates are provided with screening devices; each screening device comprises a screening board, a screening box, and a plurality of screening slots which are formed in the screening plate, wherein screening holes of different sizes are formed in the screening slots, the screening holes are sequentially arranged to the bottom ends of the screening slots from big to small in a longitudinal direction of the screening slots, the bottom ends of the screening slots are provided with screening baffle plates, a plurality of transfer slots are formed in the screening box, each transfer slot corresponds to multiple screening holes of the same dimension, transfer tubes are arranged between the screening holes and the transfer slots, notches are formed in side walls of joints of the transfer tubes and the screening holes, and distance adjustable devices are inserted into the notches. The fruit and vegetable screening machine disclosed by the invention is convenient for relieving a blockage phenomenon while quantity of fruits and vegetables is great.

The invention relates to a key and a keyboard. The key comprises a keycap, a clamping structure, a first supporting piece, a second supporting piece, a first connecting rod and a second connecting rod. The keycap is arranged on the clamping structure. One end of the first supporting piece is movably connected with the keycap, and the other end of the first supporting piece is movably connected with the clamping structure. One end of the second supporting piece is movably connected with the keycap, and the other end of the second supporting piece is movably connected with the clamping structure. The first connecting rod is arranged on the outer side of the first supporting piece. The second connecting rod is arranged on the outer side of the second supporting piece. One part of the first connecting rod and one part of the second connecting rod are arranged on the clamping structure in a slidable mode. The other part of the first connecting rod and the other part of the second connecting rod are connected on the keycap in a pivot mode. When the keycap is not pressed, the distance between the clamping structure and the keycap, the first supporting piece and the second supporting piece are arranged between the first connecting rod and the second connecting rod, and do not overlap the first connecting rod and the second connecting rod. According to the key, the two connecting rods are arranged on the outer sides of the supporting pieces, and are used for limiting and adjusting the height of the key, the height and the gradient of the key can be finely adjusted.

The invention relates to a multi-functional network box, and more specifically relates to a multi-functional network box protection device. The multi-functional network box protection device can fix and seal the multi-functional network box through a fixation and protection device, can fix multi-functional network boxes with different specifications through the fixation and protection device, cancarry out cooling on the fixation and protection device through an external cooling device so as to cool the multi-functional network box in the fixation and protection device and prevent the multi-functional network box from overheating, and can isolate vibration for the multi-functional network box through a lower buffer device. The multi-functional network box protection device comprises the fixation and protection device, the external cooling device and the lower buffer device. An inner pusher pushing rod is reversely pushed under the action of an elastic force of an inner pusher pushing spring so as to enable the inner pusher pushing rod to be extruded with the multi-functional network box and complete the fixation of the multi-functional network box; and a lower hinged sliding columnslides along a lower sliding waist groove to adjust the distance between multiple inner-end sliding pusher assemblies, thereby enabling the inner pusher pushing rods on the inner-end sliding pusher assemblies to be changed in spatial position.

A contactor configured to be electrically connected to the terminals of an electronic component is disclosed. The connector includes multiple contact electrodes contacting the terminals of the electronic component and multiple elastic electrodes each composed of an electrically conductive elastic body. The elastic electrodes generate a pressing force for pressing the contact electrodes against the terminals of the electronic component. The contact electrodes are separable from the elastic electrodes.

The invention discloses a guardrail punching machine, and relates to the field of punching equipment. The guardrail punching machine comprises a rack, a pressure-bearing table and a punching head, the pressure-bearing table is connected with the rack, the punching head is slidably connected with the rack, the punching head is located at the top of the pressure-bearing table, the guardrail punching machine further comprises a punching ring and a driving assembly, the punching ring is arranged at the end, close to the pressure-bearing table, of the punching head, the punching ring comprises a plurality of punching cutters, and the multiple punching cutters are all hinged to the punching head. The driving assembly comprises driving blocks and guiding pieces, the driving blocks are located on the inner walls of the punching cutters and can move towards the side close to the punching head, the guiding pieces are located at the sides, facing the punching cutters, of the driving blocks, driving grooves are formed in the punching cutters, the driving grooves are formed in the moving direction of the driving blocks, the guiding pieces can slide along the driving grooves and can drive the punching cutters to move towards the sides away from each other or close to each other. According to the machine, the convenience of punching through holes with different diameters in a guardrail can be improved.

The invention discloses a multi-plate magnetorheological soft start device, which is characterized in that: a right shaft is in threaded connection with a right sealing disk; the outer ring of the right sealing disk is provided with a key groove which is matched with internal teeth of internal friction plates; a left shaft is in threaded connection with a left sealing disk; the left sealing disk is connected with a sealing ring through a screw; the inner ring of the sealing ring is provided with a key groove which is matched with external teeth of external friction plates; the internal friction plate and the external friction plates are alternately arranged; a magnet exciting coil is arranged between a left end plate and a right end plate; and the upper part of the right end plate is provided with a fluid injecting bolt, and the lower part of the right end plate is provided with a fluid discharging bolt. Magnetorheological fluid is taken as a working medium, the in-plate magnetic induction density is regulated by controlling the current of the magnet exciting coil, and the transmission torque is changed, so that the controlled soft start of heavy mechanical equipment is realized. The multi-plate magnetorheological soft start device has a hollow symmetrical structure, has high heat dissipation and high reliability and is convenient to operate.

An unmanned aerial vehicle (UAV) with a multi-arm synchronous folding mechanism, comprising: a base (1) having a flat plate shape and being provided with a plurality of rotating shafts (12) which extend parallel to the base (1); a plurality of arms (2), which are connected to the rotating shafts (12) in such a manner as to be rotatable about the rotating shafts (12) respectively and capable of being in an unfolded state parallel to the base (1) and in a folded state perpendicular to the base (1); a clamping assembly (31, 32), which are used for keeping multiple arms in an unfolded state; and a folding assembly (5, 41, 42), which is used for synchronously relieving the clamping state of the clamping assembly, so that multiple arms can be converted from the unfolding state to the folding state, wherein the clamping assembly and the folding assembly form a multi-arm synchronous folding mechanism. The UAV with the multi-arm synchronous folding mechanism is easy to change the size of the UAV, simple to operate, and convenient to use in the process of folding the arms.