36results about How to "Prevent secondary use" patented technology

The utility model discloses a building template connecting structure, and relates to the technical field of template connecting structures. The pin comprises a pin body, and a trapezoidal groove is formed in the surface of the pin body. During use, after the pins are inserted into the preformed holes in the surfaces of the two formworks and the trapezoidal plates are inserted into the inner walls of the trapezoidal grooves, one ends of the trapezoidal plates are knocked through devices such as a knocking hammer, so that the surfaces of the trapezoidal plates abut against the surfaces of the formworks, and connection of the two formworks can be achieved; when the pin is used, an iron rod for dismantling can be inserted into the inner wall of the dismantling hole to break the film piece, the pin is pulled through the trapezoidal plate to turn, then the other end of the trapezoidal plate is knocked through the knocking hammer, the pin can be knocked out, and then the pin is taken down. The thin film sheets on the inner walls of the dismounting holes in the surfaces of the trapezoidal plates can be damaged and can be identified, so that secondary use is avoided, and the practicability of the device is fully embodied.

The utility model provides a hemostix capable of preventing false triggering. The hemostix comprises a steel needle protection cylinder, an excitation cap and a shell which are arranged in a sleeved mode from inside to outside. The front portion and the rear portion of the steel needle protection cylinder are connected through an easy-to-break portion, a top rib used for abutting against the outer shell to limit descending of the steel needle protection cylinder is arranged on the front portion, and if the front portion is not twisted off, when the excitation cap is accidentally touched by external force to drive the steel needle protection cylinder to move downwards, the top rib on the front portion can abut against a descending limiting blocking piece in an inner cavity of the outer shell, and the steel needle protection cylinder can move downwards. The descending of the steel needle protection cylinder is limited, and the steel needle is prevented from popping up; the steel needle is fixedly arranged in the rear part, and a guide strip rib is constructed on the periphery of the rear part; deformable pins are arranged at the end of the excitation cap, and needle outlet penetrating grooves corresponding to the guide strip ribs are formed between the deformable pins. The shell is connected with the rear portion of the steel needle protection cylinder through an elastic piece, and an abutting and supporting body is arranged in the shell. The device is only composed of the steel needle protection cylinder, the excitation cap, the shell, the spring and the protection cap, the structure is simplified, assembling is convenient, and the manufacturing cost is reduced.

The three-piece anti-fake buckle comprises a buckle piece, a buckle base and a fixing plate, the buckle piece comprises a clamping cap and a clamping foot arranged at one end of the clamping cap, and the end, away from the clamping foot, of the clamping cap is provided with a clamping groove and two clamping blocks arranged on the two sides of the clamping groove respectively; the buckle seat comprises a buckle strip and two buckle holes formed in the two sides of the buckle strip respectively, the buckle holes penetrate through the upper end and the lower end of the buckle seat, the buckle holes are connected with the corresponding clamping blocks in a clamped mode, and the buckle strip is connected with the clamping groove in a clamped mode; the fixing plate is fixedly connected with the buckle piece, and the fixing plate is provided with a limiting hole for the clamping foot to penetrate through. According to the anti-counterfeiting packaging box, the buckle holes are connected with the buckles in a clamped mode, the buckle strips are connected with the clamping grooves in a clamped mode, the buckle pieces and the buckle bases are tightly connected in a clamped mode, the buckle pieces are fixed to the packaging box through the fixing plates, and therefore the anti-counterfeiting performance of the packaging box is improved.