4results about How to "Prevent rain" patented technology

This utility model discloses a special fixing fastener for photovoltaic module connectors, including a fastener and a photovoltaic panel for auxiliary installation. The fastener consists of a clamping part and a fastening part. The fastening part is located at the edge of the clamping part and smoothly transitions to the clamping part. The photovoltaic panel includes a panel surface, a frame, a junction box, and an MC4 connector. The frame is fixedly connected to the edge of the panel surface, and the junction box is fixedly connected to the back of the panel surface. The junction box contains a connecting cable, and the end of the connecting cable is fixedly connected to the MC4 connector. The clamping part is fastened to the surface of the MC4 connector, and the fastening part is fastened to the frame. This utility model uses a U-shaped fastener made of elastic steel plate, which facilitates the use of the fastener to wrap around and fix the MC4 connector. Combined with the fastening part at the upper end of the fastener, it is easy to insert the fastener into the fixing holes on the surface of the frame, improving the stability of the MC4 connector fixing and the ease of assembly and disassembly.

The utility model relates to the field of vehicle-mounted camera circuit boards, and discloses a novel waterproof vehicle-mounted camera circuit board, which comprises a circuit board, a waterproof mechanism is arranged at the top of the circuit board, an electronic element is fixedly connected to the top of the circuit board, the waterproof mechanism comprises a waterproof cover, a side plate is fixedly connected to the outer wall of the waterproof cover, and the side plate is fixedly connected to the outer wall of the waterproof cover. The side plate is detachably connected to the top of the circuit board through a bolt, and a drainage groove is formed in the top of the circuit board. The waterproof cover is detachably connected to the top of the circuit board through the side plates and the bolts, a relatively closed space is formed, electronic elements are separated from the external environment, rainwater is effectively blocked and prevented from making direct contact with the electronic elements, and the waterproof and isolation effects are achieved; rainwater is prevented from being accumulated on the circuit board, and electronic elements are further protected from being corroded by water.

The utility model relates to a large assembled push-and-pull shed which comprises two rows of assembled frame bodies arranged in parallel and a push-and-pull shed roof erected on the tops of the assembled frame bodies. Each column of assembling frame body comprises a plurality of stand columns, column foot plates are fixedly connected to the bottoms of the stand columns, a cross beam is connected between every two adjacent stand columns, inserting openings are formed in the ends of the cross beams, inserting portions matched with the inserting openings are fixedly connected to the stand columns, and the inserting portions are fixed into the cross beams through first connecting pieces. The top of the plurality of stand columns is connected with a supporting bottom beam, the supporting bottom beam is formed by splicing a plurality of sections of beam bodies through second connecting pieces, the top of the supporting bottom beam is provided with a rail for the push-pull shed roof to slide, the rail is formed by splicing a plurality of sections of sliding rails, and splicing seams of the adjacent sliding rails and splicing seams of the adjacent beam bodies are arranged in a staggered mode. According to the large assembly type push-pull shed, through the modular assembly design, standardization of mass production is facilitated, and disassembly and transfer are convenient.

This invention relates to a battery box for electric bicycles with a self-locking structure and a quick-release base, belonging to the field of electric bicycles. Specifically, it includes a housing with self-locking mechanisms on both sides for positioning the battery, and a first opening and a second opening on each side of the outer wall. The invention works by controlling the extended ends of two first electric push rods to their shortest lengths simultaneously, causing a lever to rotate two corresponding first rotating rods. This causes the clamping plates to move upwards and away from the battery, while the support base lifts the battery for quick disconnection of the battery cables. A fully charged battery is placed between the two clamping plates, supported by the two support bases. The extended ends of the two first electric push rods are then simultaneously extended and reset, causing two rubber pads to clamp and lock the battery, preventing collision damage between the battery and the housing during electric bicycle operation.