CN104565730A

CN104565730A - Volute spring type LCD TV (Liquid Crystal Display Television) lifting device

Info

Publication number: CN104565730A
Application number: CN201310484761.4A
Authority: CN
Inventors: 崔壮勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-10-16
Filing date: 2013-10-16
Publication date: 2015-04-29

Abstract

The invention provides a volute spring type LCD TV (Liquid Crystal Display Television) lifting device which mainly comprises a reducing helical wheel, a volute spring, a fixing shaft, a wire rope and a case. The volute spring type LCD TV lifting device is characterized in that the reducing helical wheel in the device has two torques; one torque comes from the weight of an LCD TV and changes with change of the radius R of a circle formed by winding the wire rope on the reducing helical wheel; the other torque comes from the volute spring and changes with the deformation of the volute spring; the two torques change as the LCD TV rises and falls, increase and decrease together, are equal, and opposite in direction, and realize lifting balance of the LCD TV.

Description

Volute spring formula LCD TVs lowering or hoisting gear

Technical field

Patent of the present invention relates to volute spring formula LCD TVs lowering or hoisting gear.

Background technique

I had once applied for sprocket-type LCD TVs lowering or hoisting gear patent, but this apparatus parts is more, and volume is comparatively large, and cost is also relatively large, and volute spring formula LCD TVs lowering or hoisting gear can change this state.

Technology contents

Patent of the present invention proposes volute spring formula LCD TVs lowering or hoisting gear, the height of Manual push-pull mode adjustable liquid crystal display TV can be used, Fig. 1 is volute spring formula LCD TVs lifting device structure schematic diagram, Fig. 2 volute spring formula LCD TVs lowering or hoisting gear right flank structural representation, critical piece comprises Reducing screw wheel, volute spring, stationary axle, wire rope, casing.

See Fig. 3, can see that so-called Reducing screw wheel is a taper with spiral wire grooving, the fixed hole of connecting steel wire ropes is provided with near one end of taper major part at groove, wire rope can be fastened on the major part of Reducing screw wheel by it, along with wire rope is along spiral fluted continuous winding, the distance of the point of contact that wire rope and Reducing screw are taken turns and the rotary middle spindle that Reducing screw is taken turns is successively decreased in a linear fashion.

In the inner chamber of Reducing screw wheel, volute spring is installed, the inner of volute spring is fixed on stationary axle, outer end connects Reducing screw wheel, the wire rope hanging LCD TVs curls up and is connected on Reducing screw wheel, according to the characteristic of volute spring, volute spring rotate its elastic force of intermediate section and the close of angle of swing be similar to linear relationship.

The device assembled by Fig. 1 can realize LCD TVs balance lifting, its cardinal principle feature is that the Reducing screw wheel in device has two moments of torsion, see Fig. 4, a clockwise torque N1 coming from LCD TVs gravity W, it changes around the change of the radius R on Reducing screw wheel with wire rope, another comes from the moment of torsion N2 of volute spring elastic force, it changes with the deformation of volute spring, these two moments of torsion all linearly change with the oscilaltion of LCD TVs, with increasing with subtracting, direction is contrary.

See Fig. 5, when LCD TVs rises, wire rope reduces around the radius R on Reducing screw wheel, the moment of torsion that liquid crystal TV set Action of Gravity Field is taken turns at Reducing screw is diminishing, namely clockwise torque N1 is diminishing, meanwhile volute spring is loosening, the power that volute spring acts on Reducing screw wheel is diminishing, and namely anti-clockwise torque N2 is also in reduction.In like manner see Fig. 6, when LCD TVs declines, clockwise torque N1 increases, and anti-clockwise torque N2 is also in increase.

When we choose the Reducing screw wheel of suitable size, the gradient of Reducing screw wheel and the elasticity coefficient of volute spring adapted with it, two torque that Reducing screw just can be made to take turns are equal, i.e. N1=N2, and direction is contrary, thus realize the arbitrary position balance of power of LCD TVs at lifting process, if there is heavy light lifting effect.

Accompanying drawing explanation

Fig. 1 volute spring formula LCD TVs lifting device structure schematic diagram.

Fig. 2 volute spring formula LCD TVs lowering or hoisting gear right flank structural representation

Fig. 3 Reducing screw wheel and spiral spring partly cut open structural representation.

Fig. 4 Reducing screw wheel torsion schematic diagram.

Fig. 5 volute spring formula LCD TVs lowering or hoisting gear propradation schematic diagram.

Fig. 6 volute spring formula LCD TVs lowering or hoisting gear decline view.

Embodiment

The mode of execution of volute spring formula LCD TVs lowering or hoisting gear is as follows:

1, the elasticity coefficient of volute spring choosing suitable Reducing screw wheel and adapt with it.

2, see Fig. 1, be arranged on by volute spring in the inner chamber of Reducing screw wheel, the inner of volute spring is fixed on stationary axle, and outer end connects Reducing screw wheel,

3, see Fig. 1, one end of wire rope hangs LCD TVs, curls up and is connected on the major part of Reducing screw wheel.

Peace is according to above-described implementation methods, and I has manufactured experimently out volute spring formula LCD TVs lowering or hoisting gear, and its adjustable height is 1.2 meters, load-carrying 15-22kg, Manual push-pull power is <25N, and working life more than 50000 times, LCD TVs can be paused at an arbitrary position.

Claims

1. volute spring formula LCD TVs lowering or hoisting gear, critical piece comprises Reducing screw wheel, volute spring, stationary axle, wire rope, casing, it is characterized in that: volute spring is arranged in the inner chamber of Reducing screw wheel, the inner of volute spring is fixed on stationary axle, outer end connects Reducing screw wheel, and the wire rope hanging LCD TVs curls up and is connected on the major part of Reducing screw wheel.

2. the volute spring formula LCD TVs lowering or hoisting gear according to right 1, is characterized in that: Reducing screw wheel has steel wire trough, and the arbitrfary point on groove changes with angle of swing single-candidate with the distance R of wheel rotary middle spindle.