CN-224216989-U - Projection curtain leveling device

CN224216989UCN 224216989 UCN224216989 UCN 224216989UCN-224216989-U

Abstract

The utility model discloses a projection curtain leveling device, which belongs to the technical field of projection curtains and comprises a curtain storage box, a counterweight rod, two stretching units and two angle adjusting mechanisms, wherein the two stretching units are respectively used for leveling two side edges of the projection curtain, each stretching unit comprises a first connecting rod hinged with the inner wall of the curtain storage box and a second connecting rod hinged with the counterweight rod, and the first connecting rod is hinged with the second connecting rod through a first hinge shaft. According to the utility model, by arranging the two stretching units and the two angle adjusting mechanisms, when the roller shaft rotates to put down the projection curtain, the counterweight rod moves downwards, and the two angle adjusting mechanisms gradually enlarge the included angle between the first connecting rod and the second connecting rod, so that the distance between the upper end of the first connecting rod and the lower end of the second connecting rod is enlarged, and therefore, the two side edges of the projection curtain are leveled, and the projection curtain is ensured to be leveled.

Inventors

SHEN RUJUN
SHEN RULIANG

Assignees

江苏迪比斯智能家居有限公司

Dates

Publication Date: 20260508
Application Date: 20250417

Claims (3)

1. A projection curtain leveling device, comprising: the bottom of the curtain storage box is open, a roll shaft is rotatably arranged in the curtain storage box, and the projection curtain is wound on the roll shaft; the counterweight rod is fixed at the bottom edge of the projection curtain; The two opening units are respectively used for leveling two side edges of the projection curtain and comprise a first connecting rod hinged with the inner wall of the curtain storage box and a second connecting rod hinged with the counterweight rod, and the first connecting rod and the second connecting rod are hinged through a first hinge shaft; The two angle adjusting mechanisms are respectively arranged on the two opening units and are used for adjusting the included angle between the first connecting rod and the second connecting rod; The angle adjusting mechanism includes: the insection is arranged on the second connecting rod and distributed around the first hinge shaft; The first gear is rotatably arranged at one end, close to the second connecting rod, of the first connecting rod, the first gear is meshed with the insection, and when the first gear rotates on the first connecting rod, the first gear drives the insection to rotate by taking the first hinge shaft as the center; A driving mechanism and two transmission mechanisms are arranged in the curtain storage box, and the driving mechanism drives two gears to rotate through the two transmission mechanisms respectively; The transmission mechanism comprises a belt wheel I, a belt wheel II and a synchronous belt, wherein a hinge shaft II is rotatably installed in the curtain storage box, the connecting rod I is hinged in the curtain storage box through the hinge shaft II, the belt wheel I is fixed on the hinge shaft II, the belt wheel II is fixed on a gear shaft of the gear I, and the synchronous belt is wound on the belt wheel I and the belt wheel II; The driving mechanism comprises a driving shaft, the driving shaft is rotatably arranged on the curtain storage box, two bevel gears I are fixed on the driving shaft, and bevel gears II meshed with the bevel gears I are fixed on the hinge shaft II; The curtain storage box is externally fixed with a leveling motor for driving the driving shaft to rotate; The two ends of the counterweight rod are provided with end caps in a threaded manner, the end caps are fixedly provided with hinge shafts III, and the connecting rods II are hinged to the end caps through the hinge shafts III; And a limiting plate is fixed at one end of the first connecting rod, which is close to the second connecting rod, and is propped against the second connecting rod when the included angle between the second connecting rod and the first connecting rod reaches the maximum value.
2. The projection curtain leveling device of claim 1, wherein two ear plates are fixed to the top of the curtain storage box, and through holes are formed in the ear plates.
3. The projection curtain leveling device according to claim 1, wherein a winding and unwinding motor for driving the roll shaft to rotate is fixed on one side of the curtain storage box.

Description

Projection curtain leveling device Technical Field The utility model relates to the technical field of projection curtains, in particular to a projection curtain leveling device. Background When the projection curtain is unfolded, the projection curtain can be folded or loosened due to gravity, wind blowing or other external force, and the projection effect is affected, so that a leveling device is required to be designed to level the projection curtain. The conventional mode is to fix a counterweight rod at the bottom of the projection curtain, but the counterweight rod cannot be kept stable, and can shake along with the curtain when the curtain is subjected to air flow or vibration, so that a new projection curtain leveling device needs to be designed. Disclosure of utility model Aiming at the technical defects, the utility model aims to provide a projection curtain leveling device which is used for leveling a projection curtain by designing two stretching units to respectively support two side edges of the projection curtain. In order to solve the technical problems, the utility model provides a projection curtain leveling device, which comprises the following technical scheme: the bottom of the curtain storage box is open, a roll shaft is rotatably arranged in the curtain storage box, and the projection curtain is wound on the roll shaft; the counterweight rod is fixed at the bottom edge of the projection curtain; The two opening units are respectively used for leveling two side edges of the projection curtain and comprise a first connecting rod hinged with the inner wall of the curtain storage box and a second connecting rod hinged with the counterweight rod, and the first connecting rod and the second connecting rod are hinged through a first hinge shaft; The two angle adjusting mechanisms are respectively arranged on the two opening units and are used for adjusting the included angle between the first connecting rod and the second connecting rod. Preferably, the angle adjusting mechanism includes: the insection is arranged on the second connecting rod and distributed around the first hinge shaft; The first gear is rotatably arranged at one end, close to the second connecting rod, of the first connecting rod, the first gear is meshed with the insection, and when the first gear rotates on the first connecting rod, the first gear drives the insection to rotate by taking the first hinge shaft as the center. Preferably, a driving mechanism and two transmission mechanisms are arranged in the curtain storage box, and the driving mechanism drives the two gears to rotate through the two transmission mechanisms respectively. Preferably, the transmission mechanism comprises a first belt wheel, a second belt wheel and a synchronous belt, the second hinge shaft is rotatably installed in the curtain storage box, the first connecting rod is hinged in the curtain storage box through the second hinge shaft, the first belt wheel is fixed on the second hinge shaft, the second belt wheel is fixed on a gear shaft of the first gear, and the synchronous belt is wound on the first belt wheel and the second belt wheel. Preferably, the driving mechanism comprises a driving shaft, the driving shaft is rotatably installed on the curtain storage box, two bevel gears I are fixed on the driving shaft, and bevel gears II meshed with the bevel gears I are fixed on the hinge shaft II. Preferably, a leveling motor for driving the driving shaft to rotate is fixed outside the curtain storage box. Preferably, end caps are installed at the two ends of the counterweight rod in a threaded mode, a third hinge shaft is fixed on the end caps, and the second connecting rod is hinged to the end caps through the third hinge shaft. Preferably, a limiting plate is fixed at one end of the first connecting rod, which is close to the second connecting rod, and when the included angle between the second connecting rod and the first connecting rod reaches the maximum value, the limiting plate abuts against the second connecting rod. Preferably, two ear plates are fixed at the top of the curtain storage box, and through holes are formed in the ear plates. Preferably, a winding and unwinding motor for driving the roll shaft to rotate is fixed on one side of the curtain storage box. The utility model has the beneficial effects that: According to the utility model, the two stretching units and the two angle adjusting mechanisms are arranged, when the roller shafts rotate to put down the projection curtain, the counterweight rod moves downwards, the two angle adjusting mechanisms gradually enlarge the included angle between the first connecting rod and the second connecting rod, so that the distance between the upper end of the first connecting rod and the lower end of the second connecting rod is enlarged, the two side edges of the projection curtain are leveled, the projection curtain is ensured to be flat, the roller shafts are controlled to rotate by the