32results about How to "Maintain tightness" patented technology

The invention discloses a foldable and retractable sunshade with a camera function, and relates to the technical field of sunshades. The foldable and retractable sunshade with the camera function specifically comprises a base bracket, a bearing base and a positioning ring, wherein the base bracket and the bearing base are welded, and the central axes of the base bracket, the bearing base and the positioning ring are coincident, pressing blocks are disposed on the left side and the right side of the base bracket, an edge strip is arranged at the upper end of the bearing base, fixing screws areinstalled inside the left end and the right end of the edge strip, and the positioning ring is internally provided with a limiting sleeve. According to the foldable and retractable sunshade with the camera function, performance of the whole device is greatly improved while the structure is increased, the whole device is made more flexible during use, and the foldable and retractable sunshade withthe camera function can be folded and contracted to keep the device as small as possible. Storage, movement, and transportation is facilitated. At the same time, camera equipment is installed at the top end of the sunshade, and usage requirements of people are effectively met.

An optical component includes a base material and an antireflection film containing silica particles, wherein the silica particles have a first local maximum in the range of 1.5 nm or more and 2.5 nm or less (a first range), a second local maximum in the range of 3.5 nm or more and 4.5 nm or less (a second range), and a third local maximum in the range of 7.5 nm or more and 8.5 nm or less (a third range) in a number-based particle size distribution. It is preferred that the silica particles have a fourth local maximum in the range of 5.5 nm or more and 6.5 nm or less in the number-based particle size distribution.

An electronic apparatus includes the following: a heat dissipation chamber that is formed by liquid tightly separating the inside of a main unit case with a partition, has an inlet air vent and an outlet air vent in the partition, and includes a heat dissipation portion; a cooling fan that is located in the heat dissipation chamber; an inlet that is provided in the main unit case to introduce outside air into the heat dissipation chamber through the inlet air vent; and an outlet that is provided in the main unit case to exhaust an air flow sent from the cooling fan to the outside through the outlet air vent. An air channel that extends from the inlet air vent through a side wall of the main unit case to communicate the heat dissipation chamber with the inlet is liquid tightly sealed from the internal space of the main unit case with a sealing wall. A plurality of plate-shaped ribs are provided in the air channel so as to extend in a flow path direction and arranged in a lateral direction of the inlet air vent. The rigidity of the main unit case can be ensured sufficiently while maintaining the liquid tightness between the inside of the main unit case and the heat dissipation chamber.

The invention provides a sealing structure for a container and a cover body. The sealing structure involves the container and the cover body; the container comprises a bottom wall and a side wall which are connected, the bottom wall and the side wall jointly define a space, the other end, connected with the bottom wall, of the side wall is defined as an open end part, the side wall is provided with an inner side surface and an outer side surface which are opposite, and the inner side surface is provided with a first hook part; and the cover body is arranged at the open end part of the container, the cover body is provided with a covering part and a second hook part, the covering part covers the open end part in a close fit mode, and the second hook part hooks the first hook part. Therefore, the combination relation between the cover body and the container is more stable through covering the open end part with the covering part in a close fit mode and enabling the second hook part to hook the first hook part.

A sealing method for a server includes: surrounding a part of a component by a frame; coating a first colloid on the part of the component and an inner surface of the frame; filling a second colloid between the part of the component and the inner surface of the frame and covering the first colloid, in which the first colloid and the second colloid have different coefficients of viscosity; fixing the frame on a housing; and sealing a gap between the frame and the housing.

The invention discloses a wiping device. The wiping device comprises a wiping base, an unwinding roller, a winding roller, a wiping head and two fixing material mechanisms. The unwinding roller and the winding roller are used for coiling wiping cloth and arranged on the wiping base in a coordinated mode. The wiping head is used for compressing the wiping cloth, arranged on the wiping base through a driving mechanism, and located between the unwinding roller and the winding roller. The two fixing material mechanisms are arranged on the wiping base and distributed between the unwinding roller and the wiping head and between the winding roller and the wiping head respectively. In the wiping process, the wiping cloth on the two sides of the wiping head is pressed respectively. The corresponding fixing material mechanisms are additionally arranged, tightness and flatness of the wiping cloth are effectively kept, and the problem that the wiping cloth is wrinkled is effectively solved.