358results about "Mechanical appliances" patented technology

The utility model discloses a multifunctional mathematical teaching aid for graph combination, and relates to the technical field of teaching aids. The teaching aid comprises a base, the front end of the base is fixedly connected with a storage rack, the top of the base is fixedly connected with a teaching aid body, the front end of the teaching aid body is provided with a magnetic screen, the front end of the magnetic screen is provided with a graphic block, and the teaching aid body is internally provided with a writing board mechanism. The writing board mechanism comprises a writing board, an elastic spring, a groove and a hydraulic bin, the writing board mechanism is arranged, so that when the writing board is pulled out, a clamping block can be automatically clamped into a clamping groove, the writing board is more stable and cannot shake left and right during use, and when the writing board needs to be withdrawn, only a pull rod needs to be pulled down, and the writing board is convenient to use. At the moment, through cooperation of the air pressure bin, the connecting rod and other assemblies, the clamping block leaves the clamping groove, the elastic spring rebounds to drive the writing board to be stored in the teaching aid body, and use is very convenient.

The utility model discloses a word memorizing turntable, which comprises a main body, the main body is composed of a bottom plate and a panel, the center position of the bottom plate is provided with a circular placing groove, the outside of the placing groove is sleeved with a plurality of circular rings with different diameters, and the circular rings are in attached rolling connection. A placing plate is arranged on one side of the circular ring, inserting grooves are evenly formed in the other side of the circular ring, sliding grooves are connected to one sides of the inserting grooves in a penetrating mode, shielding pieces are arranged in the sliding grooves in a sliding mode, and cross seats are fixedly arranged at the four corners of the inner wall of the bottom plate. The English teaching aid is convenient to use and comprehensive in function, the circular containing groove is formed in the center of the main body, the circular rings with different diameters are installed outside the containing groove in a rolling mode, and the 26 word grids are evenly formed in the circular rings, so that letters of words can be recorded, and the English teaching aid is convenient to use. And meanwhile, words can be spelled at the display port through rotation, the practicability is richer, and the use effect is better.

The utility model discloses a Chinese teaching aid, which relates to the technical field of teaching aids and comprises a disc, the disc is of a hollow structure, a rotating ring is rotatably connected in the disc, a pressure spring is fixed in the rotating ring on the disc, a pressing cylinder is fixed at the top end of the pressure spring, and cylinders are uniformly fixed at the bottom end of the pressing cylinder along the circumference. Vertical rails are uniformly arranged on the inner wall of the rotating ring, V-shaped rails communicated with the vertical rails are arranged at the bottom ends of the vertical rails, the V-shaped rails are continuous along the inner wall of the rotating ring, the bottom ends of the V-shaped rails are first V-shaped parts, the tops of the V-shaped rails are second V-shaped parts, and the first V-shaped parts are located on the right sides of the second V-shaped parts in the vertical direction; according to the Chinese character learning teaching aid, the pressing cylinder is pressed down, the rotating ring is pushed to rotate, the rotating ring rotates to drive the radical disc to rotate by one grid position, then the position of the radical disc can be adjusted, operation is easy and convenient, and character learning teaching operation is facilitated.

The invention discloses an English vocabulary comparison learning device which comprises a shell, a storage groove is formed in the shell, a connecting groove is formed in the shell, the connecting groove is communicated with the interior of the storage groove, a plurality of learning plates are placed in the storage groove, and each learning plate comprises a fixing plate and an entry block. Four distinguishing grooves are formed in the upper surface of the fixing plate, a plurality of mounting clamping grooves are formed in the distinguishing grooves, the entry blocks are clamped in the mounting clamping grooves, a picture wiping plate is embedded in the position, close to the edge of one side, of the front surface of the shell, T-shaped sliding grooves are formed in the upper surface of the shell in a front-back symmetry mode, and a shielding protection cover is arranged on the upper surface of the shell. The entry blocks can be dug out from the distinguishing grooves, and after children need to preliminarily memorize, the vocabularies are rearranged according to two groups of English comparison vocabularies, so that certain learning fun is increased, the learning autonomy of the children is promoted, and the learning effect is enhanced.

A block set includes a smallest size block that has a cubic shape, with one side exceeding 2.5 cm, and a plurality of blocks that have a larger volume than the smallest size block, are circumscribed by a rectangle with a minimum side exceeding 2.5 cm, and have the same height from a bottom surface to a top surface. The smallest size block and the blocks each have a plurality of magnets that are disposed on lateral surfaces with different poles facing outward.