51results about How to "Strong drop resistance" patented technology

The invention provides a lens drive device which comprises a base, a lens frame, a guide mechanism installed between the base and the lens frame, an anti-rotary mechanism installed between the base and the lens frame and a piezoelectric motor with a motor head installed on the base through a motor seat, wherein the lens frame can slide relative to the base along the optical axis direction of a lens. A friction resisting part is arranged on the lens frame near the motor head, and a pretightening component is arranged between the motor seat and the base and supports against the motor seat, thereby certain pre-tightening force is generated between the motor seat and the friction resisting part. When the piezoelectric motor is excited, the motor head drives the lens frame to move along the optical axis direction of the lens. In the lens drive device, the motor head of the piezoelectric motor directly drives the lens frame, and the stroke and the position of the lens frame cannot influencethe response capability of the lens frame to the vibration of the piezoelectric motor; compared with the prior lens drive device driven by a voice coil motor, the invention has stronger anti-droppingability as well as fast response and location speed, and is convenient to pick up an image; the invention can realize self-locking by making use of the friction, and more saves the electricity.

The invention is a multifunctional damping end cover for a level ruler. Aiming at the defects that the existing level rulers are easy to move during use so that measuring precision is influenced and the level rulers features poor anti-dropping property and are easy to damage after dropping, the invention provides a multifunctional damping end cover for a level ruler. The end cover not only greatly reduces the damage to the level rulers due to the dropping from a height, but also increases the friction coefficient between the level ruler and the contact surface of an object to have adsorption force and guarantee the measuring precision. The damping end cover comprises an end cover body, a damping cap for the end cover, a spring permanent seat, and a sliding pad seat, wherein a sliding pad opening fitting a moving pad is opened on a panel at the back side of the end cover body, the damping cap for the end cover is arranged on the outer end face of the end cover body, the spring permanent seat is fixed inside a panel at the front side of the end cover body, the sliding pad seat is arranged inside the sliding pad opening on the panel at the back side of the end cover body, and a spring is arranged between the spring permanent seat and the sliding pad seat.

The invention discloses high-electrical-conductivity and high-reliability Ce-Sn-Ag-Cu solder suitable for electronic packaging. Main metal elements of solder alloy include Ce, Sn, Ag, Cu and Be. According to the solder, by adding a trace amount of Be to the Ce-Sn-Ag-Cu solder alloy, the oxidation corrosion resistance, electrical conductivity and thermal conductivity of the solder alloy are improved unexpectedly; and after welding, the dimensional stability of welding spots are high, the anti-dropping capability of the welding spots is high, and strict requirements of existing electronic packaging can be met.

The invention relates to the technical field of communication, in particular to a printed circuit board and a manufacturing method thereof. The printed circuit board comprises a first circuit board enabling a flexibility parameter after etching to serve as a first parameter and a second circuit board enabling a flexibility parameter after etching to serve as a second parameter. The manufacturing method comprises the steps of respectively performing etching on the first circuit board and the second circuit board according to a preset circuit pattern; and enabling the etched first circuit board to be connected with the etched second circuit board. According to the printed circuit board, the manufacturing method of the printed circuit board and an electronic device, the first circuit board and the second circuit board are respectively cut into corresponding shapes according to the preset circuit pattern after undergoing press fit, and the cut first circuit board and the cut second circuit board are connected. Due to the fact that the formed circuit board has a certain elasticity, the anti-breaking capability is high; besides, the formed circuit board can be bent randomly, and diversification of electronic product forms is facilitated. In addition, the cost of the formed circuit board is lower than that of the first circuit board, and device adhesion to two sides can be achieved.

The invention relates to the technical field of shaver cutters and in particular to a ceramic shaver cutter. The ceramic shaver cutter comprises a circular ring piece, an inner ring blade set, an outer ring blade set and a blade base. The inner ring blade set and the outer ring blade set are each composed of at least one blade. The inner side of the bottom of each blade of the outer ring blade set is connected with the outer ring wall of the circular ring piece. The outer side of the bottom of the each blade of the inner ring blade set is connected with the inner ring wall of the circular ring piece. The inner side of the bottom of each blade of the inner ring blade set is connected with the blade base. The top end of each blade is provided with a blade point and each blade is made of a ceramic material. According to the shaver cutter, the structure is improved, the double-ring blades are reinforced through the circular ring piece, the problem that a shaver is not resistant to impact when a ceramic blade serves as a cutter is solved, meanwhile the traditional double-ring blades are maintained, and industrial production is further facilitated; and by the adoption of a shaver adopting the ceramic cutter, it is tested that the a cutter bit is still free of fragments or cracks when the shaver freely falls off 100 times at the height of 1.5 m.

The invention discloses a plastic handle and projective jacket composition for a baby bottle and a preparation method of the composition, and belongs to the technical field of plastic processing. The composition is prepared from, by weight, 100-110 parts of epoxy resin, 20-25 parts of modified clay, 15-20 parts of flax stem powder, 12-18 parts of walnut powder, 10-15 parts of porous powder quartz, 10-15 parts of tamarind polysaccharide gum, 8-12 parts of glass powder, 8-12 parts of calcium ricinoleate, 6-10 parts of sodium caseinate, 6-10 parts of deodorants, 5-8 parts of acetyl citrate, 3-6 parts of 1,2-cyclohexane-dicarboxylic acid diisopropyl ester, 15-20 parts of turpentine, 50-60 parts of ethyl alcohol and 200-300 parts of water. According to the plastic handle and projective jacket composition for the baby bottle and the preparation method of the composition, the epoxy resin and the modified clay serve as the main raw materials and assisted by the flax stem powder, the walnut powder and other auxiliaries which are low in cost and easy to obtain, and the production cost is reduced; the product is free of toxicity and strong in abrasive resistance and break resistance, and the use requirements are met.

The invention discloses a sealed housing structure of a new energy automobile charging pile. The sealed housing structure comprises a housing main body and two supporting seats, wherein the supportingseats are connected to the upper and lower ends of the housing main body via buffering racks; each buffering rack has connection plates and a plurality of buffering rods; the connection plates are connected to the upper and lower ends of the buffering rods; each buffering rod is formed by a fixing cylinder and a piston rod; each supporting seat has a fixed disc and silica gel protection pads; thesilica gel protection pads are connected with the fixing disc via buffering springs disposed therein; a heat conduction plate is arranged on the inner wall of the housing main body; a plurality of hollow aluminum plates are evenly disposed in the heat conduction plate and circularly connected with each other; the hollow aluminum plates communicate with the heat conduction plate; sealing pads arearranged between the supporting seats and the housing main body; and the sealing pads are arranged on the inner walls of baffle frames. The whole sealed housing structure has strong sealing property and great anti-drop performance; and great buffering and heat radiation properties and practicality improvement can be obtained.