6results about How to "Prevent automatic opening" patented technology

The utility model discloses an anti-slip fastener which comprises a first fastener and a second fastener which can be opened and closed in a rotating mode, a braid is wound on the first fastener and the second fastener in an S shape, and the first fastener and the second fastener are closed in a rotating mode to clamp the braid, so that the braid is not prone to loosening and high in stability. The end parts of the first buckle and the second buckle are provided with connecting parts, the first buckle and the second buckle are rotationally connected through the connecting parts, at least one locking part is arranged between the first buckle and the second buckle, and the connecting relation between the first buckle and the second buckle is further reinforced through the locking part after closing, so that the first buckle and the second buckle are prevented from being automatically opened under the influence of external force in the use process; and bad experience is prevented from being brought to consumers.

The utility model discloses a kind of multi-cylinder locking structures, belong to cylinder technical field, including filter cartridge, the filter cartridge is uniformly fixed and installed with cylinder, the output end of the cylinder is fixed and installed with cylinder cover, the cylinder includes cylinder body, piston plate is vertically slidably installed in the cylinder body, the top wall of the piston plate is fixed and installed with the connecting rod fixedly connected with cylinder cover. The present application is fixed by setting locking rod, when the pressure in filter cartridge is too large and drives cylinder cover to move upward, the space in cylinder body below piston plate is inhaled from sliding slot through groove, and locking rod is inserted into locking groove, so as to fix piston plate, and when cylinder leaks, the pressure in cylinder body below piston plate reduces, at this time spring stretches and drives locking rod to be inserted into locking groove, so that piston plate can be timely limited, and then cylinder cover can be fixed, effectively avoid cylinder cover to fall and open automatically, play the role of improving security.

The utility model discloses a novel high-performance trailer hook relates to trailer hook technical field, including trailer hook body and safety buckle, the inner wall of slide carriage is slidingly connected with slider, the outside of slider is provided with a plurality of groups of first spring, the inner wall of slider is rotatingly connected with the outer surface of support shaft, and the safety buckle is fixed on the support shaft. According to the trailer hook, the design structure is reasonable, the safety buckle, the supporting block, the stop block, the stop groove and the supporting groove are matched, the safety buckle is supported through rotation of the supporting shaft, the trailer hook body is semi-wrapped after the safety buckle rotates, and therefore the trailer hook is convenient to use. The trailer hook body is in contact with the supporting groove and the blocking groove through the supporting block and the blocking block, supporting force is received for the trailer hook body, the safety buckle and the trailer hook body form a whole, the overall strength of the trailer hook body is improved, and the risk that the trailer hook body is dragged and broken is reduced.

The utility model provides a gift bag with theftproof magnetic lock structure, including the body, the front and rear ends of body are provided with first pull rope and second pull rope respectively, the rear end of body is provided with multiple folding cover plate, the front end of body is provided with first magnetic lock structure, the front end of multiple folding cover plate is provided with the second magnetic lock structure of cooperation with first magnetic lock structure, the front end of first magnetic lock structure is first magnetic attraction piece and rear end is first buckle structure, the rear end of second magnetic lock structure is second magnetic attraction piece of cooperation with first magnetic attraction piece and the front end is second buckle structure of cooperation with first buckle structure, the middle part of first magnetic attraction piece and second magnetic attraction piece is hollow. The gift bag is provided with multiple folding cover plate to seal the gift bag, and is buckled by first buckle structure and second buckle structure, so that the gift bag cannot be easily opened, and theft is prevented.

The utility model relates to a kind of water pump installation assembly and its ceiling machine, install in ceiling machine, include: water pump shell, form the installation cavity for installing water pump body, and the inspection hole for visual inspection water level switch;Cover, rotatably be provided at inspection hole, to open or close inspection hole;Clamping assembly, including the first clamping part of the side edge setting in the cover, and the second clamping part setting in installation cavity, the first clamping part clamping in second clamping part, for realizing the locking of cover and the side of inspection hole.The water pump installation assembly of the utility model, by presetting inspection hole on water pump shell, and rotatingly setting cover at inspection hole, to realize repeated opening and closing, improve the maintenance convenience and detection flexibility of water level switch in later period, also fixedly connected by clamping assembly cover and inspection hole, avoid cover to open automatically under extraneous factor, to avoid dust, moisture etc. into ceiling machine interior.

The utility model relates to an instrument air supplementing device in a liquid ammonia tank area during overhaul, which comprises an instrument air storage tank, an outer net header pipe, a downstream air supply pipeline, a nitrogen cylinder group and a storage platform, the outer net header pipe and the downstream air supply pipeline are connected with the instrument air storage tank, a pressure gauge and a gas distribution tank are sequentially arranged on the downstream air supply pipeline, and the gas distribution tank is connected with a user side; a first stop valve, a check valve and a gas supplementing channel are sequentially arranged on the outer net header pipe in the gas inlet direction, one end of the gas supplementing channel is connected into the outer net header pipe through a second stop valve, and the other end of the gas supplementing channel is connected with the nitrogen cylinder set. A stop valve, a check valve and a gas supplementing channel are additionally arranged on a boundary area header pipe, so that a nitrogen cylinder group can be connected in time when abnormal conditions occur during the period of years of repair, and instrument air can be supplemented in time as an alternative scheme. By means of the mode, instrument air supply of a small-scale device can be met, the situation that a pneumatic control valve of the liquid ammonia storage tank is automatically opened due to pressure loss is avoided, environmental protection and safety are guaranteed, original pipeline distribution and trend do not need to be changed, and high flexibility is achieved.