2results about How to "Small locking force" patented technology

This disclosure relates to a foldable device, specifically a foldable device technology. The foldable device includes a first magnetic component, a second magnetic component, and a folding component. The first and second magnetic components are located on opposite sides of the folding component. The first magnetic component includes multiple first magnetic elements, and the second magnetic component includes multiple second magnetic elements. The number of first and second magnetic elements is equal, and at least one of the multiple first and second magnetic elements is an electromagnet. When the foldable device is in a closed state, the positions of the multiple first and second magnetic elements correspond one-to-one. When the foldable device needs to be closed, the electromagnets and other magnetic elements generate an attractive force to fix the sides of the foldable device. When the foldable device needs to be unfolded, the electromagnets and other magnetic elements eliminate the attractive force or generate a repulsive force to reduce the locking force on both sides of the foldable device. The user can unfold the foldable device by applying a small external force with one hand.

The application relates to the field of plastic pipe connection, in particular to a reinforced plastic pipe connection structure. The reinforced plastic pipe connection structure comprises a socket pipe fitting and a spigot pipe fitting fixed in the socket pipe fitting; an annular pressure response cavity surrounding the spigot pipe fitting is defined between the inner wall of the socket pipe fitting and the outer wall of the spigot pipe fitting, the spigot pipe fitting is provided with a pressure guide channel communicating with the response cavity; an adaptive locking mechanism is further arranged in the response cavity, the adaptive locking mechanism comprises a driving assembly capable of axially sliding along the socket pipe fitting and a plurality of locking assemblies capable of radially sliding along the socket pipe fitting; a limiting reinforcing sleeve is further fixed outside the socket pipe fitting, the limiting reinforcing sleeve extends to the outside of the spigot pipe fitting and is used for gradually elastically limiting the bending deformation of the spigot pipe fitting. The reinforced plastic pipe connection structure can improve the installation stability and use safety of the conveying pipe.