CN108533162B

CN108533162B - Up-down freely opening and closing roller shutter

Info

Publication number: CN108533162B
Application number: CN201810513089.XA
Authority: CN
Inventors: 张集文
Original assignee: 张集文
Current assignee: Nanyang Kunyuan Intelligent Technology Co.,Ltd.
Priority date: 2018-05-24
Filing date: 2018-05-24
Publication date: 2020-02-21
Anticipated expiration: 2038-05-24
Also published as: CN108533162A; EP3825507A4; EP3825507B1; EP3825507A1; EP3825507C0; WO2019223708A1

Abstract

The invention discloses a roller shutter capable of freely opening and closing up and down, which comprises a scroll, a traction rope and a traction device, wherein a movable pulley is arranged at the end part of the scroll, the traction rope comprises an upper pulling section and a lower pulling section which are pulled by the traction device to synchronously move, and the upper pulling section and the lower pulling section are respectively tensioned upwards and downwards after bypassing the movable pulley, so that the stability of the movable pulley is kept. The invention is provided with the upward-pulling section and the downward-pulling section, the upward-pulling section and the downward-pulling section tension the movable pulley towards two opposite directions to keep balance, and when the upward-pulling section and the upward-pulling section are drawn to move synchronously, the movable pulley can rotate when lifting, thereby realizing the effect of freely opening and closing the roller shutter up and down.

Description

Up-down freely opening and closing roller shutter

Technical Field

The invention relates to a roller shutter, in particular to a roller shutter which can be freely opened and closed up and down and is more reliable in operation.

Background

The rolling curtain is convenient to use, attractive and elegant, and is widely applied to the home life and the office places. The existing rolling curtain is generally adopted by fixedly mounting a scroll at the upper end of a window, rotating the scroll and rolling or releasing curtain cloth. The window curtain is firstly opened from the lower part of the window to shade the upper part of the window and collect light from the lower part, and when the window curtain is opened, the lower part of the window cannot shade the sight and the upper part cannot collect light.

In actual life, private spaces such as rooms, guest rooms and toilets, school classrooms and office spaces often need the lower half part of a window to shield the sight and use the upper half part for lighting. There is a need for an open-top rolling blind. In order to shield the sight or direct light at different positions, the curtain is sometimes required to be shielded in the middle or upper part of the window, and the ideal rolling curtain function is that the curtain can be opened at any position and in any size.

For example, chinese patent ZL201320482322.5 discloses an upward-opening roller blind, which connects movable pulley mechanisms at two ends of a winding shaft, so that a traction rope drives the movable pulley and the winding shaft to move up and down together and simultaneously drives the winding shaft to rotate, the speed of the winding shaft moving up and down is close to the speed of the cord fabric releasing or winding on the winding shaft, and the lower end of the roller blind is kept substantially stationary, thereby realizing the dynamic upward-opening roller blind effect. This patent has still realized can sheltering from the optional position at the window through set up clutching mechanism between movable pulley and spool.

In order to further improve the design of the patent, Chinese patent ZL201620022532.X discloses a rolling curtain which can be unfolded at any position and has any size, comprising a scroll, a curtain cloth, a movable pulley and a traction rope, wherein the movable pulley and the traction rope are arranged at two ends of the scroll, two ends of the traction rope are respectively connected with two motor-driven winders, and the curtain cloth can be opened from top to bottom or the unfolding size of the curtain cloth can be adjusted at any position by controlling the movement modes of the two motors, so that the curtain cloth can be shielded at any position of the lower part, the middle part or the upper part of a window.

The roller shutter disclosed by the above patent drives the rotation of the scroll by means of the gravity of the scroll and the pulling force of the traction rope, and if the gravity of the scroll is insufficient, the scroll is difficult to form rotation when lifting, so that the upward opening effect is damaged. In addition, the roller blinds disclosed in the above patents are driven by winding or unwinding a traction cord by means of a winder, and the lowering of the roller blind when the traction cord is unwound is also by means of gravity, which makes the roller blinds unsuitable for use in certain applications requiring inclined or horizontal installation. Meanwhile, the arrangement of the winder occupies a design space, and is not beneficial to the optimization of the whole system.

Disclosure of Invention

The invention provides a roller shutter which can be freely opened and closed up and down, so that the movement of a roller does not depend on the self gravity, the operation is more reliable, and the roller shutter can be used in occasions needing inclined or horizontal installation.

The roller shutter capable of freely opening and closing up and down comprises a scroll, a traction rope and a traction device, wherein a movable pulley is arranged at the end part of the scroll, the traction rope comprises an upward lifting section and a downward pulling section which are pulled by the traction device to synchronously move, and the upward lifting section and the downward pulling section are respectively tensioned upwards and downwards after bypassing the movable pulley to keep the movable pulley stable.

The lifting section and the pull-down section can be of a split structure, in this case, the traction device is a winder arranged at one end or two ends of the lifting section and the pull-down section, the winder is simple in structure and can be driven by a motor or manually, only one end of the lifting section and the pull-down section can be connected with the winder, or both ends of the lifting section and the pull-down section can be connected with the winder, when the winders at the two ends of the lifting section receive wires and the winders at the two ends of the pull-down section pay out wires at the same speed, the movable pulley only carries out lifting action and does not rotate; when the wire winder at one end of the lifting section takes up the wire and the wire winder at the other end of the lifting section takes out the wire at the same speed, and the wire winders at the two ends of the pulling-down section move reversely, the movable pulley only rotates automatically without lifting; when the winder at one end of the lifting section is static, the winder at the other end of the lifting section pays off or takes up wires and the winder at the lower pulling section moves reversely, the movable pulley rotates while lifting, and the roller shutter is opened or closed upwards.

Preferably, the pulling rope is in a closed loop structure, the up-and-down freely-opening and closing roller shutter comprises a plurality of tensioning wheels for tensioning the pulling rope, and at least one tensioning wheel is a pulling wheel forming the pulling device. The closed loop structure is provided with the tensioning device relative to the split structure, but a winder for winding and unwinding the traction rope is omitted, and the synchronous motion of the lifting section and the pulling section can be ensured.

More preferably, two traction wheels are included, which respectively pull different ends of the upper pulling section and the lower pulling section. When the two traction wheels pull the two ends of the upper pulling section or the lower pulling section at the same speed, the movable pulley can only do lifting movement without autorotation, thereby being capable of adjusting the height of the roller shutter.

Further preferably, the two traction wheels are driven by two different motors, respectively.

It is also possible to provide only one drive motor for both traction wheels, which motor drives one of the traction wheels and the other traction wheel is driven by it, and to achieve this, a clutch device is provided between the two traction wheels. The clutch device can be a gear set which comprises a medium gear, when the medium gear is meshed with the rest gears, the two traction wheels are linked, and when the medium gear is withdrawn, the two traction wheels are disconnected.

Preferably, the traction rope is a bead chain or a synchronous belt.

Preferably, guide grooves are formed in two sides of the roller shutter which can be freely opened and closed up and down, and the traction device, the traction rope and the movable pulley are arranged on the guide grooves. The guide groove can limit the transverse swing of the movable pulley, so that the roller shutter has a wind-resistant function, and the modularization of the device can be realized, and the assembly is convenient.

Preferably, the hauling ropes and the hauling devices are symmetrically arranged, the hauling devices on two sides are coaxially connected, the coaxial connection can transmit the driving force on one side to the other side, and synchronous movement of the hauling ropes on two sides is guaranteed.

The pulling rope is provided with the lifting section and the pulling section, the movable pulleys are tensioned towards two opposite directions by the lifting section and the pulling section to keep balance, and when the lifting section and the pulling section are pulled to synchronously move, the movable pulleys can rotate while lifting, so that the curtain cloth can be opened or retracted while the reel is lifted without depending on gravity, and the curtain can be freely opened and closed up and down.

Drawings

Fig. 1 is a schematic structural view of a roll screen of embodiment 1 of the present invention.

Fig. 2 is a schematic structural view of a roll screen of embodiment 2 of the present invention.

Fig. 3 is a schematic structural view of the curtain clutch device shown in fig. 2 in a disconnected state.

Fig. 4 is a schematic structural view of the coupling state of the roller shutter clutch device shown in fig. 2.

Fig. 5 is a schematic structural view of another driving method of the roll screen shown in fig. 2.

Fig. 6 is a schematic view of the overall installation structure of the roll screen of the present invention.

The movable pulley is 1, the cord fabric is 2, the lifting section is 31, the pulling section is 32, the connecting sections are 33 and 34, the winders are 41, 42, 43 and 44, the tension pulleys are 51, 52, 53 and 54, the counterweight is 6, the idler gear is 7, the guide groove is 8, the motors are 91 and 92, the controller is 10, the transmission rod is 11 and the fixed gear seat is 12.

Detailed Description

Example 1

As shown in figure 1, the up-down freely-opening and closing roller shutter comprises a winding shaft (not shown in the figure), a movable pulley 1, a traction rope and a curtain cloth 2, wherein the upper end of the curtain cloth 2 is fixed on the winding shaft, and the lower end is a free end and is provided with a counterweight 6.

The traction rope comprises an upper pulling section 31 and a lower pulling section 32, wherein two ends of the upper pulling section 31 are connected with a winder 41 and a winder 42, two ends of the lower pulling section are connected with a winder 43 and a winder 44, the upper pulling section 31 is tensioned upwards after passing around a movable pulley 1, and the lower pulling section 32 is tensioned downwards to the movable pulley, so that the movable pulley 1 is kept stable at any time.

When the

winder

42 and 44 are stationary, the winder 41 is released and the winder 43 is wound, the spool moves down while winding up the curtain, achieving the curtain-up effect. When the

winder

42 and 44 are stationary, the winder 41 is winding and the winder 43 is releasing, the spool moves upward while the curtain is released, achieving the curtain closing effect upward.

When the winder 41 and the winder 42 are wound at the same time and the winder 43 and the winder 44 are released at the same time, the spool rises integrally with the curtain; when the winder 41 and the winder 42 are simultaneously released and the

winders

43 and 44 are simultaneously wound, the reel descends integrally with the curtain cloth, thereby being shielded at any position of the window.

Example 2

As shown in fig. 2, the up-and-down freely-opening and closing roller blind comprises a winding shaft (not shown), a movable pulley 1 and a curtain cloth 2, wherein a traction rope comprises an upper pulling section 31 and a lower pulling section 32 which are connected into a closed ring structure by connecting

sections

33 and 34, and tensioning is arranged on four tensioning wheels, wherein the

tensioning wheels

51 and 52 are traction wheels which can be driven manually or by a motor. The haulage rope can be the cotton rope that various elongation are little, or the pearl chain, also can select for use the hold-in range, and the structure that certainly take-up pulley and movable pulley need also select for use and match with the haulage rope. When the traction rope adopts a bead chain, the tension pulley and the movable pulley are chain wheels; when the synchronous belt is selected as the traction rope, the tension pulley and the movable pulley are synchronous belt pulleys.

The upper pulling section 31 of the traction rope winds around the movable pulley 1 to be tensioned upwards, and the lower pulling section 32 winds around the movable pulley 2 to be tensioned downwards, so that the movable pulley 1 is kept stable. The upper end of the curtain cloth 2 is fixed on the scroll, and the lower end is provided with a counterweight 6.

As shown in fig. 3, the movable sheave 1, the traction rope, and the tension sheave are provided in the guide groove 8, the idler gear 7 is provided in the tension sheave 52, and the fixed tooth holder 12 engageable with the idler gear 7 is provided in the guide groove 8. The tension pulley 51 and the tension pulley 52 are provided with coaxial ring gears, and the idler gear 7 is always meshed with the ring gear on the tension pulley 52. When the tension pulley 52 needs to be rotated, as shown in fig. 4, the idler gear 7 is rotated around the axial center of the tension pulley 52, and is engaged with the ring gear on the tension pulley 51, so that the tension pulley 51 rotates the tension pulley 52.

As shown in fig. 3 and 4, the pulling-up section 31 is wound around the tension pulley 52 in a manner different from that of fig. 2, and the connection manner can be realized by interlocking the tension pulley 51 and the tension pulley 52 through the gear 7, so that both ends of the pulling-up section 31 can be moved upward or downward simultaneously.

By driving the tension wheel 51 manually or by a motor, and engaging or disengaging the idler gear 7, the following combined actions of rotation, rest and different rotation directions of the two traction wheels can be realized:

when the tensioning wheel 51 rotates clockwise, the idler gear 7 is kept to be separated from the gear ring on the tensioning wheel 51 and meshed with the fixed gear seat 12, so that the tensioning wheel 52 is static, the upper lifting section 31 is extended gradually due to the traction of the tensioning wheel 51, the lower pulling section 32 is shortened gradually, the pulling rope drives the movable pulley 1 to descend and simultaneously rotate anticlockwise, the curtain cloth is wound, and the curtain is opened from top to bottom to realize the upward opening effect.

When the tensioning wheel 51 rotates counterclockwise, the idler gear 7 keeps separating from the gear ring on the tensioning wheel 51 and is meshed with the fixed gear seat 12, so that the tensioning wheel 52 is static, the upward-pulling section 31 is gradually shortened due to the traction of the tensioning wheel 51, the downward-pulling section 32 is gradually extended, the pulling rope drives the movable pulley 1 to ascend and simultaneously rotate clockwise, the curtain cloth is released, and the effect of closing the roller curtain from bottom to top is achieved.

When the tension pulley 51 rotates counterclockwise, the idler gear 7 is disengaged from the fixed carrier 12, and engages with the ring gear on the tension pulley 51, and the tension pulley 52 also rotates counterclockwise, as shown in fig. 4. Because the traction rope is reversely wound on the tension wheel 52, the two ends of the lifting section 31 of the traction rope are simultaneously shortened, the movable pulley 1 rises but cannot rotate, and the curtain cloth is integrally lifted. Otherwise, the curtain cloth is wholly descended, thereby realizing the effect of shielding at any position of the window.

Example 3

As shown in fig. 5, the reel (not shown), the guide groove 8, the movable sheave 1, the curtain fabric 2, the traction rope, and the fixed sheave are arranged as in example 2 without interposing gears and fixed blocks. The tensioning wheel 51 and the tensioning wheel 52 are respectively driven by the motor 91 and the motor 92, the motor 91 and the motor 92 are controlled by the controller 10, and various programs can be set by the controller 10 to respectively control the rotation, the rest and different rotation directions of the motor 91 and the motor 92, so that the two traction wheels realize the combined action as described in embodiment 2, and the curtain cloth can realize the effect of opening or closing or shielding at any position of a window.

The diameters of the movable pulley and the reel are the same or similar, so that the bottom end of the curtain cloth can be always kept to be immovable up and down or unobvious in up-and-down movement when the curtain cloth is opened or retracted.

Example 4

As shown in fig. 6, guide grooves 8 are formed at both sides of the roll screen, and the traction rope, the movable pulley 1 and the tension pulley are installed on the guide grooves 8. The traction ropes, the tension wheels and the movable pulleys on the two sides of the roller shutter are symmetrically arranged, the reel is arranged between the two movable pulleys 1, and the curtain cloth is wound on the reel. In order to realize synchronous movement, the traction wheels on the two sides are coaxially connected through the transmission rod 11, so that the synchronous movement of the movable pulleys on the two sides can be realized only by driving the traction wheels on one side.

Two ends of the counterweight 6 at the lower end of the curtain cloth 2 are connected to the corresponding positions of the pull-down sections of the traction ropes, so that the folding and unfolding of the curtain cloth and the integral lifting cannot be influenced. The up-and-down freely opening and closing roller shutter of the present invention can be suitably used for an inclined or horizontal installation.

Claims

1. The roller shutter capable of freely opening and closing up and down comprises a scroll, a traction rope and a traction device, wherein a movable pulley is arranged at the end part of the scroll.

2. The upper and lower free-folding rolling shutter as claimed in claim 1, wherein said drawing means is a winder provided at one or both ends of the up-pulling section and the down-pulling section.

3. The vertically freely openable and closable rolling shutter according to claim 1, wherein said traction cord is of a closed loop structure, and the shutter comprises a plurality of tension rollers for tensioning said traction cord, wherein at least one of said tension rollers is a traction roller constituting said traction means.

4. The upper and lower free-folding rolling shutter as claimed in claim 3, comprising two traction wheels which respectively drag different ends of the upper lifting section.

5. The upper and lower free-folding rolling shutter as claimed in claim 4, wherein the two traction wheels are driven by two different motors, respectively.

6. The upper and lower free-folding rolling shutter as claimed in claim 4, wherein a clutch device is provided between the two traction wheels.

7. The up-down freely opening-closing roll screen as claimed in claim 1, wherein said pulling rope is a bead chain or a timing belt.

8. The vertically freely openable and closable roll screen according to claim 1, wherein guide grooves are provided on both sides of the roll screen, and the traction means, the traction rope and the movable pulley are provided on the guide grooves.

9. The upper and lower free-folding rolling shutter as claimed in claim 1, wherein said traction ropes and said traction means are symmetrically arranged, and the traction means at both sides are coaxially connected.