One-way friction assembly

Abstract

The invention relates to a one-way friction assembly. The one-way friction assembly comprises a throwing piece (131) connected to a one-way inner pipe (102) in a transmission mode, throwing bead grooves (132) formed in the throwing piece (131), and throwing beads (133) installed in the throwing bead grooves (132). The one-way friction assembly (13) is further provided with a throwing piece cavity(511) matched with the throwing piece (131), and when the one-way inner pipe (102) rotates clockwise, the throwing beads (133) can be thrown out along the throwing beads grooves (132) to rub against the throwing piece cavity (511), so that friction resistance is generated. The one-way friction assembly (13) further comprises one or more speed increasing gear sets (14) connected between the one-wayinner pipe (102) and the throwing piece (131). An automobile on-board mobile projection curtain with a sun-shading function using the one-way friction assembly can be automatically retracted at a constant speed under the action of the one-way friction assembly, and is high in convenience and long in service life.

Description

[0001] This application is a divisional application with application number 201710985480.5, application date 2017-10-20, and the title of the invention "vehicle mobile projection curtain and projection system with sunshade function". technical field [0002] The invention relates to the field of automotive supplies, in particular to a vehicle-mounted mobile projection curtain with a sunshade function. Background technique [0003] With the improvement of living standards, cars are becoming more and more popular, and people have higher and higher requirements for car configurations. However, the current entertainment system on the car is only equipped with a navigation multimedia system on the dashboard, but limited by the size of the screen, passengers cannot Enjoy video and audio comfortably. [0004] In addition, all kinds of cars currently on the market do not have sunshade curtains inside the car before leaving the factory, and some mid-to-high-end cars only have sunshad...

AI Technical Summary

Problems solved by technology

[0003] With the improvement of living standards, cars are becoming more and more popular, and people have higher and higher requirements for car configurations. However, the current entertainment system on the car is only equipped with a navigation multimedia system on the dashboard, but limited by the size of the screen, passengers cannot Enjoy video and audio comfortably

[0004] In addition, all kinds of cars currently on the market do not have sunshade curtains inside the car before leaving the factory, and some mid-to-high-end cars only have sunshade curtains on the left and right rear windows. It will rise rapidly, which not only makes people unable to adapt to the temperature inside the car, but also needs to open the window and turn on the air conditioner to cool down before entering the car, and it will accelerate the aging of various parts in the car, so many car glass is pasted with sunshade film, but In order to meet the requirements of the field of view, the front windshield of the car cannot be filmed. People usually use the sunshade to cover the front windshield, and then take it off when driving.

Most of the current front windshield sunshades are of the left and right pull-out type. This method cannot fit the windshield well, and because the stretching length of the sunshade curtain is relatively large after being pulled from left to right, It is easy to make the edge of the curtain curl when it is rolled up, causing the curtain to be rolled up unevenly, and it is easy to be stuck, thus causing damage to the projection curtain, and when the curtain is recycled, it is necessary to hold the lower pole of the sunshade curtain in parallel for recycling.

Moreover, after the existing sunshade is pulled out, the pull-out end must be continuously held and fixed in time, otherwise it will be automatically retracted due to elasticity. In addition, the existing sunshade is fixed on the front windshield with a vacuum suction cup. This fixing method is not firm, and it will fall off after a long time in the sun or when encountering small bumps, which will affect the use effect and driving safety. It can only be fixed on the spot when using it, and it is not suitable for hanging on the top of the front windshield for a long time.

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