195results about How to "Improve dustproof" patented technology

The invention discloses an LED lighting lamp device stable in installation. The LED lighting lamp device comprises an upper lamp body and a lower lamp body. A containing groove is formed in the bottom in the upper lamp body. First sliding grooves are symmetrically formed in the top in the containing groove left and right. A partition plate extending downwards is arranged between the two first sliding grooves. A downward extending section of the partition plate stretches into the containing groove. The parts, on the sides where the first sliding grooves are away from the partition plate, of the upper lamp body are internally provided with first cavities. The first cavities are internally provided with rotating shafts. Each first sliding groove is internally provided with a first screw in threaded connection with a push lock sliding block. The inner sides of the first screws are in power connection with a motor. First bevel gears are fixed to the rotating shafts in the circumferential direction. The upper portions of the first bevel gears are engaged and connected with second bevel gears. The parts, above the first cavities, of the upper lamp body are internally provided with second cavities. Second sliding grooves are formed in the inner sides of the second cavities. Second screws are arranged in the second cavities. The bottoms of the second screws penetrate the upper lamp body and are fixedly connected with the second bevel gears, and the second screws in the second cavities are in threaded connection with movable blocks.

A stock feeder for woodworking equipment includes a base, a cross clamp, a horizontal bar unit, a vertical bar unit, a feeding unit, and an electrical unit. The electrical unit has an electrical unit main body and a variable-frequency drive. The electrical unit main body has a first housing, a plurality of heat dissipation grooves provided on the outer periphery of the first housing, and a power fan which is independently mounted on a top portion of the first housing and in communication with the heat dissipation grooves. The variable-frequency drive has a second housing, a variable-frequency circuit sealed in the second housing, and a control panel exposed outside the second housing. The second housing has an outer surface provided with a plurality of heat dissipation slots corresponding in position to and in communication with the heat dissipation grooves of the electrical unit main body.

The invention discloses a stabilized LED illuminating lamp device which comprises an upper lamp body and a lower lamp body. A containing groove is formed in the inner bottom of the upper lamp body. First sliding chutes are formed in the inner top of the containing groove in a left-right symmetry mode. A partition plate which extends downwards is arranged between the two first sliding chutes. The downward-extending section of the partition plate stretches into the containing groove. First cavities are formed in the upper lamp body and located at the sides, far away from the partition plate, of the first sliding chutes. Rotating shafts are both arranged in the corresponding first cavities. Each first sliding chute is internally provided with a first screw rod. Each first screw rod is connected with a lock push sliding block in a threaded mode. The inner sides of the first screw rods are in power connection with a motor. First bevel gears are fixedly arranged in the circumferential directions of the rotating shafts, and the upper sides of the first bevel gears are connected with second bevel gears in an engaged mode. Second cavities are formed in the upper lamp body and located above the first cavities, and second sliding chutes are formed in the inner sides of the second cavities. Second screw rods are arranged in the corresponding second cavities. The bottoms of the second screw rods penetrate through the upper lamp body and are further fixedly connected with the second bevel gears. The second screw rods in the second cavities are connected with moving blocks in a threaded mode.

The present invention discloses a keyboard device. The keyboard device includes a sheet, a membrane switch, an actuating component, and a protrusion keycap structure. The membrane switch is disposed on a side of the sheet. The actuating component is disposed on a side of the membrane switch far away from the sheet and is for pressing the membrane switch to actuate the membrane switch. The protrusion keycap structure is disposed on a side of the actuating component far away from the membrane switch and is for driving the actuating component to actuate the membrane switch upon being pressed. The protrusion keycap structure includes a mylar film.

A telecommunication cabinet includes a first and a second cabinet bodies, an internal fan, a partition board, multiple heat dissipation pipes and an external fan. The first cabinet body includes an upper slot and a lower slot. The second cabinet body covers the first cabinet body and includes an air inlet and an air outlet. The internal fan is arranged in the first cabinet body. The partition board is connected with the second cabinet body and includes multiple air vents and multiple air intakes. The heat dissipation pipes are disposed in the second cabinet body and include multiple upper nozzles and multiple lower nozzles. Multiple heat dissipation channels are disposed between the heat dissipation pipes. The external fan is disposed on a bottom inside the second cabinet body.