3results about How to "Eliminate the cumbersome process" patented technology

This utility model discloses a novel internal circulation range hood, including a smoke extraction box assembly, a housing assembly, and a fan assembly. The housing assembly includes a housing body and a front cover; the upper opening of the housing body houses a liftable smoke extraction box assembly. The fan assembly includes a fan body and a fan wheel assembly. The fan body divides the inner cavity of the housing body into a non-communicating front chamber and a rear chamber; the rear chamber is connected to the smoke extraction box assembly. The area above the fan body in the front chamber forms a smoke exhaust channel, and the areas on the left and right sides of the front chamber form purification channels. The purification channels are connected to the smoke exhaust channels, and purification components are installed within the purification channels. The exhaust vent of the purification channels is located on the front side of the housing body. The smoke extraction port of the fan body is connected to the rear chamber, and the smoke exhaust port is connected to the smoke exhaust channel. This utility model range hood balances high smoke purification efficiency with a small space occupation, is easy to install, and has an overall aesthetically pleasing design. Furthermore, the smoke extraction box assembly moves smoothly and is easy and quick to assemble and disassemble.

This utility model discloses a miniature ball bearing for a cooling fan, comprising an outer ring, an inner ring, a cage, a dust cover, and rolling elements movably disposed between the outer and inner rings. Both the inner and outer peripheral walls of the outer ring and the inner ring have circumferentially formed grooves for the rolling elements to move. Both ends of the inner peripheral wall of the outer ring have circumferentially formed stepped grooves for installing the dust cover. The connections between the grooves of the inner ring and the outer peripheral wall of the inner ring, and between the grooves of the outer ring and the inner peripheral wall of the outer ring, have chamfered edges. A retaining spring is provided in the stepped groove for an interference fit with the stepped groove. The inner wall of the retaining spring abuts against the outer wall of the dust cover, while the outer peripheral wall of the dust cover has a clearance fit with the inner peripheral wall of the stepped groove. The curvature coefficient of the grooves of the outer ring is greater than that of the grooves of the inner ring. This utility model solves the problems of traditional miniature ball bearings, such as increased bearing ellipticity due to dust cover installation leading to out-of-tolerance bearing ellipticity, and assembly damage during rolling element installation leading to unqualified rolling element vibration during bearing operation.

The utility model belongs to the packaging protection technical field discloses double -notch foldable U -shaped angle bead, this angle bead includes a U -shaped angle bead body, it is constituted by bottom plate and both sides integral connection's side plate, the first cut -out for fast cutting is evenly provided with a plurality of first cut -out for fast cutting along its length direction in angle bead body, has realized that the length of angle bead can be freely decided without tool, the outer surface of bottom plate can be along the center line of its length direction and is equipped with a second cut -out for bending or folding, makes angle bead can adapt to the object package of different angle, or inwardly folds to reduce the volume of warehousing and transportation, and angle bead body can adopt multilayer waste paper hot -pressing composite and can be inlayed honeycomb paper core buffer layer between layers to enhance the impact resistance. The utility model has the beneficial effect of length can be freely decided, can adapt to a variety of angle bending, excellent buffering performance, save storage space, environmental protection and low -cost.