4results about How to "Less weight gain" patented technology

The utility model discloses a motorcycle engine crankcase belongs to motorcycle engine technical field, and one kind of motorcycle engine crankcase, including crankcase main part, the crankcase main part upper end surface center one side place is equipped with crankshaft accommodating cavity, the crankcase main part upper end surface center leans to the side and is equipped with the variable speed gear installation cavity, the inboard wall of crankshaft accommodating cavity is equipped with the protection structure, the crankcase main part lower end surface center place is equipped with the reinforcing structure, in addition, the utility model discloses, through the combination design of protective layer, T type sliding block and sliding slot, through the radial limit and prevent the deviation and fall of protective layer because of crankshaft high -frequency vibration, also keep the axial trace sliding space to adapt the thermal expansion and contraction when the engine works, solved the problem that rigid protection structure is easy to produce stress cracking because of temperature change, simultaneously, the direct contact of protective layer and crankshaft part realizes wear and tear isolation, and cooperates slidable type assembly structure, and the durability and adaptability of protection have been greatly improved.

The utility model discloses a low noise automobile tire belongs to automobile tire technical field, including tire body, longitudinal pattern groove, drainage pattern groove and first sound absorption pit, tire body tread is equipped with several longitudinal pattern grooves, several drainage pattern grooves are equipped in the tire body's shoulder position, and the first sound absorption pit is equipped on the inner wall of tire body, and several first sound absorption pits are evenly distributed along the circumferential inner wall of tire body. The prior art has solved the problem that the optimization effect is not obvious, the tire weight is increased and the production cost is improved due to the relatively limited space of pattern optimization and form adjustment and the addition of mute material. The utility model solves the three big problems of the noise reduction bottleneck, weight increase and cost increase of the traditional technology through structural innovation, and provides a technical solution with performance and economy for the electric automobile tire.

This invention discloses a golf ball for enhancing the reflection performance of 77GHz millimeter-wave radar, comprising: a golf ball body; a conductive coating disposed on the surface of the golf ball body; the conductive coating is a conductive material layer formed by liquid-phase impregnation and drying, wherein the conductive material is selected from at least one of silver nanoparticles, graphene, or carbon-based conductive materials; the conductive coating is uniformly adhered to the surface of the golf ball and the pit structure on the surface, covering the pit structure, and the coating does not fill the pits; and the total weight gain of the golf ball does not exceed 0.5g. The preparation method includes the following steps: Step 1: Diluting the conductive coating with a diluent to a solid content of 1%–5% to obtain an impregnation solution; Step 2: Completely immersing the golf ball in the impregnation solution; Step 3: Removing excess liquid by centrifugation or spin-drying; Step 4: Performing a low-temperature drying treatment on the spin-dried golf ball.

This invention provides an ultra-thin metal composite panel, comprising a metal plate body, with hot-dip galvanized steel plates disposed on the outer side of the metal plate body. Toughness composite units are located between the hot-dip galvanized steel plates to enhance the toughness of the metal plate body. A ceramic coating is disposed on the outer side of each hot-dip galvanized steel plate. The ultra-thin metal composite panel of this invention effectively ensures the overall strength of the metal plate body while increasing its bending strength and impact resistance, thereby enhancing its impact resistance and effectively reducing the inconvenience caused to users by impact-induced damage.