33results about How to "Practical structure" patented technology

The invention relates to a cannon connector female plug and a cannon connector thereof, the female plug comprises a housing and a plug core arranged in the housing, the plug core is provided with five jacks for five first pins of a five-core cannon male plug to insert; the current carriers are arranged corresponding to the jacks, and the current carriers are used for being in contact with the first pins of the five-core cannon male plug inserted into the corresponding jacks; three of the five jacks are arranged to allow three second pins of the three-core cannon male plug to be inserted therein, and three current carriers corresponding to the three jacks are arranged to be in contact with the second pins of the three-core cannon male plug inserted into the corresponding jacks. According to the design of the jacks, the female plug can be inserted into a five-core cannon male plug and a three-core cannon male plug, and can be matched with different male plugs, so that the cost is saved, and the use is convenient.

The utility model relates to the technical field of heat preservation bags, in particular to a heat preservation bag capable of increasing the capacity. The combined bag comprises a combined bag cover and a heat preservation bag body, the combined bag cover is connected with the heat preservation bag body through a zipper, an interlayer area and an expansion area are arranged in the combined bag cover, the interlayer area is closed through the zipper, a containing cavity and a first mesh bag are arranged in the interlayer area, a folding side face is wrapped in the expansion area through the zipper, and the outer side face of the expansion area is closed through the zipper. A heat preservation cavity is formed in the heat preservation bag body, a heat preservation plate is arranged at the top end of the heat preservation cavity, and a bearing seat is arranged on the bottom side of the heat preservation cavity and provided with a plurality of grooves. The structure of the heat preservation cavity is optimized, and the stability and the bearing effect of the bottom end structure of the heat preservation bag are improved through the bearing base; meanwhile, the structure on the bearing seat is matched with the discharging cavity, so that water accumulated in the heat preservation bag can be discharged through the discharging cavity under the condition that the heat preservation bag is highly closed, and the structure is simple and practical.

The utility model discloses a multifunctional mathematics learning ruler relates to mathematical teaching aid technical field, include: first scale, second scale and base plate, the base plate includes first recess and second recess, and first recess is arranged side by side with second recess, and first recess is communicated with second recess, and there is spacing between the both ends of first recess and the edge of base plate, and first recess is used for installing first scale, and second recess extends to the edge of base plate in both ends, and second recess is used for installing second scale, and second scale is slidably connected with second recess to make second scale relative to the axial movement of first scale, be provided with first pattern on the circumference lateral wall of first scale, be provided with second pattern on the circumference lateral wall of second scale, when first scale and second scale are installed on base plate, and the corresponding relation of first pattern and second pattern is used to assist mathematical arithmetic for multifunctional mathematics learning ruler. The device is used for assisting student to learn arithmetic in panoramic mathematics.