CN214303637U

CN214303637U - Anti-diagonal screen window

Info

Publication number: CN214303637U
Application number: CN202022080787.0U
Authority: CN
Inventors: 不公告发明人
Original assignee: FUNDANT (CHANGZHOU) ADVANCED METAL TECHNOLOGIES CO LTD
Current assignee: FUNDANT (CHANGZHOU) ADVANCED METAL TECHNOLOGIES CO LTD
Priority date: 2020-09-21
Filing date: 2020-09-21
Publication date: 2021-09-28
Anticipated expiration: 2030-09-21

Abstract

The utility model relates to the technical field of screen windows, in particular to a diagonal-pulling-proof screen window, which comprises a screen box, two side frames, a bottom frame, a scroll and a screen, and further comprises a left pull rope, a right pull rope and a rope pulling and releasing mechanism, wherein the scroll is rotatably arranged in the screen box, and an elastic element for leading the scroll to generate a rolling trend is arranged between the scroll and the screen box; the left side at the walking beam is fixed to the left side stay cord, and the right side at the walking beam is fixed to the right stay cord, the utility model discloses utilize the design of elastic element combination left stay cord and right stay cord, draw through the rope and put the mechanism and pull back or release left stay cord and right stay cord in step, make the gauze unreel or the rolling from the spool, with this closing or opening that realizes the gauze, because left stay cord and right stay cord are respectively in both sides pulling walking beam, consequently the gauze is even at the in-process atress that removes, thereby can prevent that the gauze from being pulled to one side, ensure that the gauze is smooth and easy receive and releases, and promoted smooth and easy nature and life that the gauze opened and close.

Description

Anti-diagonal screen window

Technical Field

The utility model belongs to the technical field of the screen window technique and specifically relates to a prevent screen window that draws to one side.

Background

PM2.5 is a particulate matter with the aerodynamic equivalent diameter of less than or equal to 2.5 microns in the environmental air, can be suspended in the air for a long time, the higher the content concentration of the particulate matter in the air is, the more serious the air pollution is, and the harm of the PM2.5 is, the PM2.5 is like a carrier, carries a plurality of harmful substances, such as bacteria, carcinogenic polycyclic aromatic hydrocarbon, heavy metal and the like, and the PM2.5 can seriously affect the human health when exceeding the standard;

the traditional screen window does not have the haze removal function, and for the haze days which often appear in autumn and winter, the harm of outdoor PM2.5 to indoor personnel can be reduced only by adopting a mode of avoiding windowing as much as possible, but after the window is closed, the indoor lighting and ventilation performance is sacrificed;

at present, adopt single, layer gauze prevents that the haze belongs to the research direction of hot door, to coiling formula gauze mounting structure, the structure that often adopts among the prior art does, install the one end of gauze on the spool, other end installation base, it is manual pulling base to rely on when closing, it rotates to drive the spool by the gauze, the gauze unreels and is in the tiling state, it is manual promotion base to rely on when opening, the gauze is convoluteed on the spool gradually, the gauze rolling is in the rolling state, the defect that this kind of coiling formula gauze mounting structure exists is, when the base of staff push-and-pull gauze usually, it is comparatively random to the impetus on base, can not be the intentional intermediate position that is in the base, the gauze is easily pulled to one side, cause the gauze both sides atress inhomogeneous, easy emergence damage, influence life.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: in order to solve the problem that the bottom of the gauze of the winding type gauze mounting structure in the prior art is easy to be inclined to pull, so that the stress on two sides of the gauze is uneven, the gauze is easy to damage and the service life is influenced, an inclined-pulling-resistant screen window is provided.

The utility model provides a technical scheme that its technical problem adopted is: a screen window preventing diagonal pulling comprises a screen box, two side frames, a bottom frame, a scroll and a screen mesh, and further comprises a left pull rope, a right pull rope and a rope pulling and releasing mechanism, wherein the two side frames are respectively positioned on two sides of the screen box and are both positioned between the screen box and the bottom frame;

the winding shaft is rotatably arranged in the yarn box, one end of the gauze is fixed on the winding shaft, the other end of the gauze is fixed with a movable beam, two sides of the movable beam are respectively connected with the two side frames in a sliding manner, and an elastic element for enabling the winding shaft to generate a winding trend is arranged between the winding shaft and the yarn box;

the left pull rope is fixed on the left side of the movable beam, the right pull rope is fixed on the right side of the movable beam, and the rope pulling and releasing mechanism is used for driving the left pull rope and the right pull rope to move synchronously.

According to the scheme, the elastic element is combined with the design of the left pull rope and the right pull rope, the left pull rope and the right pull rope are synchronously pulled back or released through the rope pulling and releasing mechanism, so that the gauze is unreeled or reeled from the reel, and therefore the gauze is closed or opened;

when the gauze is closed, the rope pulling and releasing mechanism pulls back the left pull rope and the right pull rope, the movable beam moves towards the bottom frame under the synchronous pulling of the left pull rope and the right pull rope, and the elastic element stores energy; when the gauze is opened, the rope pulling and releasing mechanism releases the left pull rope and the right pull rope, the reel rotates correspondingly according to the distance released by the left pull rope and the right pull rope under the action of the elastic element, the gauze is wound on the reel gradually, and the movable beam moves towards the gauze box.

Furthermore, the rope pulling and releasing mechanism comprises a sliding block, the sliding block is slidably mounted on the movable beam along the linear direction, and the left pull rope and the right pull rope are wound on the same side of the bottom frame and then connected with the sliding block, so that the left pull rope and the right pull rope move together when the sliding block moves; the left pull rope and the right pull rope are synchronously pulled back or released along with the left pull rope and the right pull rope by utilizing the linear displacement of the slide block.

In order to improve the convenience of opening and closing the gauze, a right fulcrum is arranged on the right side of the bottom frame, and one end of the left pull rope, which is far away from the movable beam, and one end of the right pull rope, which is far away from the movable beam, are sequentially wound around the right side of the right fulcrum and the left side of the sliding block and then are fixed on the right side of the bottom frame;

or the right side of underframe is equipped with two right fulcrums, the one end that the walking beam was kept away from to left stay cord is in proper order around the right side of a right fulcrum and the left side after-fixing of slider on the right side of underframe, the one end that the walking beam was kept away from to right stay cord is in proper order around the right side of another right fulcrum and the left side after-fixing of slider on the right side of underframe.

Utilize the slider to be equivalent to the principle of movable pulley, the distance value that left stay cord and right stay cord moved along with the slider simultaneously is the twice of slider self displacement distance value promptly to the realization only needs the push-and-pull to the slider short distance, alright realize gauze long distance's rolling or unreel, improves the convenience that the gauze was opened and close.

Furthermore, a left fulcrum is arranged on the left side of the bottom frame, and the left pull rope winds around the left fulcrum and then reaches the right fulcrum; the left pulling rope can be prevented from inclining in the process of moving along with the sliding block, so that the left pulling rope can move according to a preset path.

In order to improve the stress uniformity in the opening and closing process of the gauze, further, the length direction of the part, positioned between the movable beam and the left fulcrum, of the left pull rope is parallel to the moving direction of the movable beam; the length direction of the part of the right pull rope between the movable beam and the right fulcrum is parallel to the moving direction of the movable beam; therefore, the acting force of the left pulling rope on the movable beam and the acting force of the right pulling rope on the movable beam can be kept consistent with the moving direction of the movable beam, and the uniformity of stress in the opening and closing process of the gauze is improved.

Furthermore, the left fulcrum and the right fulcrum both adopt guide wheels, and the guide wheels are rotatably installed on the bottom frame; the left fulcrum and the right fulcrum adopt the design of the guide wheel, so that the friction between the left pull rope and the left fulcrum as well as the friction between the right pull rope and the right fulcrum is changed into rolling friction, and the friction between the right pull rope and the right fulcrum is also changed into rolling friction, so that the friction loss of the left pull rope and the right pull rope can be reduced, and the reliability of the screen window is improved.

In order to improve the convenience of opening and closing the gauze, the gauze further comprises at least two groups of pulley blocks which are distributed at intervals, each pulley block comprises a pulley and a steering wheel, the pulleys are rotatably installed on the sliding blocks, the steering wheels are rotatably installed on the right side of the bottom frame, the steering wheels are positioned on the right sides of the pulleys, and one end of the left stay cord, which is far away from the movable beam, and one end of the right stay cord, which is far away from the movable beam, are sequentially wound around the steering wheel and the pulley of each pulley block and then are fixed on the right side of the bottom frame;

if the pulley blocks are provided with two groups, the distance value of the left pull rope and the right pull rope moving along with the sliding block is four times of the distance value of the sliding block moving; if the assembly pulley has when three groups, the distance value that left stay cord and right stay cord removed along with the slider simultaneously is six times of slider self displacement value, realizes only needing the push-and-pull to the slider short distance, alright realize gauze long distance's rolling or unreel, improves the convenience that gauze opened and close.

Furthermore, a right fulcrum is arranged on the right side of the bottom frame, and one end of the left pull rope, which is far away from the movable beam, and one end of the right pull rope, which is far away from the movable beam, are fixed on the sliding block after being wound around the right side of the right fulcrum;

or the right side of the bottom frame is provided with two right fulcrums, one end of the left pull rope far away from the movable beam is fixed on the sliding block after passing through the right side of one right fulcrum, and one end of the right pull rope far away from the movable beam is fixed on the sliding block after passing through the right side of the other right fulcrum.

According to the scheme, the sliding block directly and simultaneously pulls the left pull rope and the right pull rope, but the moving distance value of the left pull rope and the moving distance value of the right pull rope are equal to the displacement value of the sliding block.

In order to facilitate installation and manufacture, a sliding rod is fixed in the bottom frame, and the sliding block is sleeved outside the sliding rod and is in sliding connection with the sliding rod.

In order to realize that the movable beam of the gauze can stay at any position by self, further, the gauze window further comprises a damping device for providing resistance to block the movement of the sliding block; the elastic element can only overcome the dead weight of the gauze and the movable beam, but is not enough to overcome the resistance factor provided by the damping device to the sliding block, therefore, in the opening and closing process, when the sliding block is stirred by hands, the resistance provided by the damping device to the sliding block is overcome, along with the pulling back or releasing of the left pull rope and the right pull rope, the movable beam of the gauze moves along with the sliding block, the opening and closing of the gauze are realized, once the acting force of the hands to the sliding block is cancelled, the elastic element is not enough to simultaneously overcome the resistance provided by the damping device to the sliding block and the dead weight of the gauze and the movable beam, and the movable beam of the gauze stops moving immediately.

Further, the damping device comprises a friction piece, the friction piece is arranged on the bottom frame or the sliding block, and when the sliding block moves, the friction piece provides friction resistance for the sliding block; through the arrangement of the friction piece, the friction piece provides friction force when the sliding block moves so as to block the movement of the sliding block;

or the damping device comprises a magnet, the magnet is arranged on the bottom frame or the sliding block, and the magnetic force of the sliding block is absorbed on the bottom frame; through the setting of magnet, can receive the influence that magnetic force adsorbs when making the slider remove to hinder the motion of slider.

Furthermore, the rope pulling and releasing mechanism comprises a releasing and releasing wheel, the releasing and releasing wheel is rotatably installed on the bottom frame, and one end of the left pull rope, which is far away from the movable beam, and one end of the right pull rope, which is far away from the movable beam, are both fixed on the releasing and releasing wheel; when the winding and unwinding wheel is rotated, the left pull rope and the right pull rope are synchronously wound on the winding and unwinding wheel or are unwound from the winding and unwinding wheel, so that the left pull rope and the right pull rope are synchronously pulled back or released, and the screen is driven to be opened and closed.

Furthermore, a left fulcrum is arranged on the left side of the bottom frame, the left pull rope is wound through the left fulcrum and then fixed on the retracting wheel, a right fulcrum is arranged on the right side of the bottom frame, and the right pull rope is wound through the right fulcrum and then fixed on the retracting wheel; thereby enabling the left and right cords to move in a predetermined path.

In order to improve the stress uniformity in the opening and closing process of the gauze, further, the length direction of the part of the left pull rope between the movable beam and the left fulcrum is parallel to the moving direction of the movable beam, and the length direction of the part of the right pull rope between the movable beam and the left fulcrum is parallel to the moving direction of the movable beam; therefore, the acting force of the left pulling rope on the movable beam and the acting force of the right pulling rope on the movable beam can be kept consistent with the moving direction of the movable beam, and the uniformity of stress in the opening and closing process of the gauze is improved.

Furthermore, the elastic element is a coil spring or a torsion spring, one free end of the elastic element is fixedly connected with the reel, and the other free end of the elastic element is fixedly connected with the yarn box.

Furthermore, one end of the yarn box, which is close to the bottom frame, is provided with a strip-shaped opening for the yarn net to pass through, dust removing strips with a dust adsorption function are arranged on two sides of the strip-shaped opening, and the yarn net is in contact with the dust removing strips; by utilizing the dust removing strip with the dust adsorption function, when the gauze is wound or unwound, dust attached to the gauze can be completely or partially removed.

In order to improve the smoothness of the movement of the movable beam, rollers are further mounted on two sides of the movable beam, and the wheel surfaces of the rollers are in contact with the side frames on the sides of the rollers.

The utility model has the advantages that: the utility model discloses prevent the design that draws to one side the screen window utilizes elastic element to combine left stay cord and right stay cord, draw through the rope and put mechanism and pull back or release left stay cord and right stay cord in step, make the gauze unreel or the rolling from the spool, with this closing or opening of realization gauze, because left stay cord and right stay cord stimulate the movable beam in both sides respectively, consequently the gauze is even at the in-process atress that removes, thereby can prevent that the gauze from being drawn to one side, ensure that the gauze is smooth receiving and releasing, and promoted smooth and easy nature and life that the gauze opened and close.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic view of a screen window for preventing diagonal pulling in embodiment 1 of the present invention;

FIG. 2 is an enlarged partial schematic view of A of FIG. 1;

fig. 3 is a schematic view of the connection of the left and right pulling ropes and the sliding block in embodiment 1 of the present invention;

FIG. 4 is a schematic view of the middle movable beam and the side frame of the side where the middle movable beam is located;

FIG. 5 is a schematic view of the combination of the dust-removing strip and the gauze of the present invention;

fig. 6 is a schematic view of the connection of the left and right pulling ropes with the slider in embodiment 2 of the present invention;

fig. 7 is a schematic view of the connection of the left and right pulling ropes with the slider in embodiment 3 of the present invention;

fig. 8 is a schematic view of a screen window for preventing diagonal pulling in embodiment 5 of the present invention;

FIG. 9 is an enlarged partial schematic view of B in FIG. 8;

fig. 10 is a schematic view of the connection of the left and right pulling ropes to the slider in embodiment 5 of the present invention.

In the figure: 1. the device comprises a yarn box, 2, a side frame, 3, a bottom frame, 4, a reel, 5, a gauze, 6, a left pull rope, 7, a right pull rope, 8, an elastic element, 9, a movable beam, 10, a sliding block, 11, a left fulcrum, 12, a right fulcrum, 13, a sliding rod, 14, a take-up and pay-off wheel, 15, a dust removal strip, 16, a roller, 17, a pulley, 18 and a steering wheel.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic drawings, which illustrate the basic structure of the invention only in a schematic way, and thus show only the components that are relevant to the invention, and the directions and references (e.g., upper, lower, left, right, etc.) may be used only to help describe the features in the drawings. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the claimed subject matter is defined only by the appended claims and equivalents thereof.

Example 1

As shown in fig. 1-5, an anti-diagonal screen window comprises a screen box 1, two side frames 2, a bottom frame 3, a scroll 4, a screen 5, a left pull rope 6, a right pull rope 7 and a rope pulling and releasing mechanism, wherein the two side frames 2 are respectively positioned at two sides of the screen box 1 and are both positioned between the screen box 1 and the bottom frame 3;

the winding shaft 4 is rotatably installed in the yarn box 1, one end of the yarn net 5 is fixed on the winding shaft 4, the other end of the yarn net is fixed with a movable beam 9, two sides of the movable beam 9 are respectively connected with the two side frames 2 in a sliding mode, and an elastic element 8 used for enabling the winding shaft 4 to generate a winding trend is arranged between the winding shaft 4 and the yarn box 1;

the left pull rope 6 is fixed on the left side of the movable beam 9, the right pull rope 7 is fixed on the right side of the movable beam 9, and the rope pulling and releasing mechanism is used for driving the left pull rope 6 and the right pull rope 7 to move synchronously.

The rope pulling and releasing mechanism comprises a sliding block 10, the sliding block 10 is installed on the movable beam 9 in a sliding mode along the linear direction, the left pull rope 6 and the right pull rope 7 are wound on the same side of the bottom frame 3 and then connected with the sliding block 10, and therefore when the sliding block 10 moves, the left pull rope 6 and the right pull rope 7 move together; the left pull rope 6 and the right pull rope 7 are synchronously pulled back or released along with the straight displacement of the slide block 10.

A right fulcrum 12 is arranged on the right side of the bottom frame 3, and one end of the left pull rope 6, which is far away from the movable beam 9, and one end of the right pull rope 7, which is far away from the movable beam 9, are sequentially wound around the right side of the right fulcrum 12 and the left side of the slider 10 and then fixed on the right side of the bottom frame 3;

or the right side of underframe 3 is equipped with two right fulcrums 12, the one end that the walking beam 9 was kept away from to left stay cord 6 is in proper order around the right side of a right fulcrum 12 and the left side after-fixing of slider 10 is on the right side of underframe 3, the one end that the walking beam 9 was kept away from to right stay cord 7 is in proper order around the right side of another right fulcrum 12 and the left side after-fixing of slider 10 is on the right side of underframe 3.

Utilize slider 10 to be equivalent to the principle of movable pulley, the distance value that left stay cord 6 and right stay cord 7 moved along with slider 10 simultaneously is the twice of slider 10 self displacement value to the realization only needs the push-and-pull to slider 10 short distance, alright realize gauze 5 long distance's rolling or unreel, improves the convenience that gauze 5 opened and close.

A left fulcrum 11 is arranged on the left side of the bottom frame 3, and the left pull rope 6 winds around the left fulcrum 11 and then reaches a right fulcrum 12; the left pulling rope 6 can be prevented from being inclined in the process of moving along with the slider 10, so that the left pulling rope 6 can move according to a preset path.

The length direction of the part of the left pull rope 6 between the movable beam 9 and the left fulcrum 11 is parallel to the moving direction of the movable beam 9; the length direction of the part of the right pull rope 7 between the movable beam 9 and the right fulcrum 12 is parallel to the moving direction of the movable beam 9; therefore, the acting force of the left pull rope 6 on the movable beam 9 and the acting force of the right pull rope 7 on the movable beam 9 can be kept consistent with the moving direction of the movable beam 9, and the uniformity of the stress in the opening and closing process of the gauze 5 is improved.

The left fulcrum 11 and the right fulcrum 12 both adopt guide wheels, and the guide wheels are rotatably arranged on the bottom frame 3; the left fulcrum 11 and the right fulcrum 12 adopt the design of guide wheels, so that the friction between the left pull rope 6 and the left fulcrum 11 as well as the friction between the right pull rope 7 and the right fulcrum 12 are changed into rolling friction, and the friction between the left pull rope 6 and the right pull rope 7 is also changed into rolling friction, thereby reducing the friction loss of the left pull rope 6 and the right pull rope 7 and improving the reliability of the screen window.

In order to facilitate installation and manufacture, a sliding rod 13 is fixed in the bottom frame 3, and the sliding block 10 is sleeved outside the sliding rod 13 and is in sliding connection with the sliding rod 13.

A damping device for providing resistance to resist movement of the slider 10; the elastic element 8 can only overcome the dead weight of the gauze 5 and the movable beam 9, but is not enough to overcome the resistance factor provided by the damping device to the sliding block 10, therefore, in the opening and closing process, when the sliding block 10 is stirred by hands, the resistance provided by the damping device to the sliding block 10 is overcome, along with the pulling back or releasing of the left pull rope 6 and the right pull rope 7, the movable beam 9 of the gauze 5 moves along with the sliding block, the opening and closing of the gauze 5 are realized, once the acting force of the hands to the sliding block 10 is removed, the elastic element 8 is not enough to simultaneously overcome the resistance provided by the damping device to the sliding block 10 and the dead weight of the gauze 5 and the movable beam 9, and the movable beam 9 of the gauze 5 stops moving immediately.

The damping device comprises a friction piece, the friction piece is arranged on the bottom frame 3 or the sliding block 10, and when the sliding block 10 moves, the friction piece provides friction resistance to the sliding block 10; through the arrangement of the friction piece, the friction piece provides friction force when the sliding block 10 moves so as to block the movement of the sliding block 10;

or the damping device comprises a magnet, the magnet is arranged on the bottom frame 3 or the slide block 10, and the slide block 10 is magnetically adsorbed on the bottom frame 3; due to the arrangement of the magnet, the slider 10 is influenced by magnetic force adsorption when moving, so that the movement of the slider 10 is hindered.

The elastic element 8 is a coil spring or a torsion spring, one free end of the elastic element 8 is fixedly connected with the reel 4, and the other free end of the elastic element 8 is fixedly connected with the yarn box 1.

One end of the yarn box 1, which is close to the bottom frame 3, is provided with a strip-shaped opening for the yarn net 5 to pass through, two sides of the strip-shaped opening are provided with dust removing strips 15 with dust adsorption functions, and the yarn net 5 is in contact with the dust removing strips 15; the dust removing strips 15 with dust adsorption function are utilized, so that when the gauze 5 is wound or unwound, dust attached to the gauze can be completely or partially removed; in this embodiment, the dust removing strip 15 may be a brush, a felt or a rubber strip.

In order to improve the smoothness of the movement of the movable beam 9, rollers 16 are arranged on two sides of the movable beam 9, and the wheel surfaces of the rollers 16 are in contact with the side frames 2 on the sides.

According to the scheme, the elastic element 8 is combined with the design of the left pull rope 6 and the right pull rope 7, the left pull rope 6 and the right pull rope 7 are synchronously pulled back or released through the rope pulling and releasing mechanism, so that the gauze 5 is unreeled or reeled from the reel 4, and the gauze 5 is closed or opened;

the layout of the left pull rope 6 and the right pull rope 7 in the embodiment can adopt two types, the first type is: one end of the left pull rope 6, which is far away from the movable beam 9, sequentially winds the right side of one right fulcrum 12 and the left side of the slider 10 and is fixed on the right side of the bottom frame 3, and one end of the right pull rope 7, which is far away from the movable beam 9, sequentially winds the right side of the other right fulcrum 12 and the left side of the slider 10 and is fixed on the right side of the bottom frame 3; the second type is similar to the first type, namely, one end of the right pull rope 7, which is far away from the movable beam 9, sequentially winds the left side of one left fulcrum 11 and the right side of the slide block 10 and then is fixed on the left side of the bottom frame 3, and one end of the left pull rope 6, which is far away from the movable beam 9, sequentially winds the left side of the other left fulcrum 11 and the right side of the slide block 10 and then is fixed on the left side of the bottom frame 3;

taking the first installation mode as an example: the specific opening process of the gauze 5 is as follows: the sliding block 10 is driven to move leftwards by hands, the left pull rope 6 and the right pull rope 7 are pulled back by double distance, the movable beam 9 of the gauze 5 is close to the bottom frame 3 by the double distance of the sliding block 10, and the elastic element 8 stores energy to close the gauze 5; the hand drives slider 10 to remove to the right, and left stay cord 6 and right stay cord 7 are by the release of double distance, and elastic element 8 releases its elasticity and drives spool 4 rolling, and gauze 5 is convoluteed gradually on spool 4, and the walking beam 9 of gauze 5 draws close to gauze box 1 with the distance of movement of double slider 10, realizes that gauze 5 opens.

Example 2

Example 2 differs from example 1 in that: as shown in fig. 6, the rope pulling and releasing mechanism in embodiment 2 is different from the rope pulling and releasing mechanism in embodiment 1, and the specific details are as follows:

the pulley block comprises a bottom frame 3 and is characterized by further comprising two groups of pulley blocks which are distributed at intervals, wherein a left fulcrum 11 is arranged on the left side of the bottom frame 3, each pulley block comprises a pulley 17 and a steering wheel 18, the pulleys 17 are rotatably mounted on the sliding blocks 10, the steering wheels 18 are rotatably mounted on the right side of the bottom frame 3, the steering wheels 18 are positioned on the right sides of the pulleys 17, one end of the left pull rope 6, which is far away from the movable beam 9, and one end of the right pull rope 7, which is far away from the movable beam 9, are sequentially wound around the steering wheel 18 and the pulley 17 of each pulley block and then fixed on the right side of the bottom frame 3, wherein one end of the left pull rope 6, which is far away from the movable beam 9, is wound around the left fulcrum 11 and then sequentially wound around the steering wheel 18 and the pulley 17 of each pulley block;

the distance value that left stay cord 6 and right stay cord 7 moved along with slider 10 simultaneously can be realized to this embodiment for the quadruple of slider 10 self displacement value to only need the push-and-pull to slider 10 short distance, alright realize 5 long distance's of gauze rolling or unreel, improve the convenience that the gauze was opened and close.

Example 3

Example 3 differs from example 1 in that: as shown in fig. 7, the rope pulling and releasing mechanism in embodiment 2 is different from the rope pulling and releasing mechanism in embodiment 1, and specifically, the following is provided:

the movable beam type pulley block device is characterized by further comprising three groups of pulley blocks which are distributed at intervals, a left fulcrum 11 is arranged on the left side of the bottom frame 3, each pulley block comprises a pulley 17 and a steering wheel 18, the pulleys 17 are rotatably mounted on the sliding block 10, the steering wheels 18 are rotatably mounted on the right side of the bottom frame 3, the steering wheels 18 are all located on the right side of the pulleys 17, one end of the left pull rope 6, which is far away from the movable beam 9, and one end of the right pull rope 7, which is far away from the movable beam 9, sequentially wind around the steering wheel 18 and the pulley 17 of each pulley block and then are fixed on the right side of the bottom frame 3; wherein, one end of the left pulling rope 6 far away from the movable beam 9 winds through the left fulcrum 11 and then sequentially winds through a steering wheel 18 and a pulley 17 of each pulley block;

the distance value that left stay cord 6 and right stay cord 7 moved along with slider 10 simultaneously can be realized to this embodiment for slider 10 self moving distance value's six times to only need 10 short distance's push-and-pull to the slider, alright realize 5 long distance's of gauze rolling or unreel, improve the convenience that the gauze was opened and close.

Example 4

Example 4 differs from example 1 in that: the rope pulling and releasing mechanism in the embodiment 2 is different from the rope pulling and releasing mechanism in the embodiment 1, and the specific steps are as follows:

a right fulcrum 12 is arranged on the right side of the bottom frame 3, and one end of the left pull rope 6 far away from the movable beam 9 and one end of the right pull rope 7 far away from the movable beam 9 are fixed on the sliding block 10 after passing through the right side of the right fulcrum 12;

or two right fulcrums 12 are arranged on the right side of the bottom frame 3, one end of the left pull rope 6, which is far away from the movable beam 9, winds the right side of one right fulcrum 12 and then is fixed on the sliding block 10, and one end of the right pull rope 7, which is far away from the movable beam 9, winds the right side of the other right fulcrum 12 and then is fixed on the sliding block 10.

The scheme is that the slide block 10 directly pulls the left pull rope 6 and the right pull rope 7 at the same time, but the moving distance value of the left pull rope 6 and the moving distance value of the right pull rope 7 are both equal to the displacement value of the slide block 10;

the specific opening process of the gauze 5 is as follows: the sliding block 10 is driven to move leftwards by a human hand, the left pull rope 6 and the right pull rope 7 are pulled back at the same distance, the movable beam 9 of the gauze 5 is close to the bottom frame 3 at the same moving distance of the sliding block 10, and the elastic element 8 stores energy to realize the closing of the gauze 5; the staff drives slider 10 to remove to the right, and left stay cord 6 and right stay cord 7 are by the release of equal distance, and elastic element 8 releases its elasticity and drives spool 4 rolling, and gauze 5 is convoluteed gradually on spool 4, and movable beam 9 of gauze 5 draws close to gauze box 1 with the displacement distance of equal slider 10, realizes that gauze 5 opens.

Example 5

Example 5 differs from example 1 in that: as shown in fig. 8 to 10, the rope pulling and releasing mechanism in embodiment 3 is different from the rope pulling and releasing mechanism in embodiment 1, and the details are as follows:

the rope pulling and releasing mechanism comprises a releasing and releasing wheel 14, the releasing and releasing wheel 14 is rotatably installed on the bottom frame 3, and one end of the left pull rope 6, which is far away from the movable beam 9, and one end of the right pull rope 7, which is far away from the movable beam 9, are both fixed on the releasing and releasing wheel 14; when the winding and unwinding wheel 14 is rotated, the left pull rope 6 and the right pull rope 7 are synchronously wound on the winding and unwinding wheel 14 or are unwound from the winding and unwinding wheel 14, so that the left pull rope 6 and the right pull rope 7 are synchronously pulled back or released, and the screen 5 is driven to be opened and closed.

A left fulcrum 11 is arranged on the left side of the bottom frame 3, the left pull rope 6 is wound around the left fulcrum 11 and then fixed on a winding and unwinding wheel 14, a right fulcrum 12 is arranged on the right side of the bottom frame 3, and the right pull rope 7 is wound around the right fulcrum 12 and then fixed on the winding and unwinding wheel 14; so that the left and

right cords

6 and 7 can move in a predetermined path.

The length direction of the part of the left pull rope 6 between the movable beam 9 and the left fulcrum 11 is parallel to the moving direction of the movable beam 9, and the length direction of the part of the right pull rope 7 between the movable beam 9 and the left fulcrum 11 is parallel to the moving direction of the movable beam 9; therefore, the acting force of the left pull rope 6 on the movable beam 9 and the acting force of the right pull rope 7 on the movable beam 9 can be kept consistent with the moving direction of the movable beam 9, and the uniformity of the stress in the opening and closing process of the gauze 5 is improved.

A damping device can be designed between the take-up and pay-off wheels 14 and the bottom frame 3, for example, a rubber ring is arranged between the take-up and pay-off wheels 14 and the bottom frame 3, so that resistance exists when the take-up and pay-off wheels 14 rotate.

The specific opening process of the gauze 5 is as follows: when a hand rotates the winding and unwinding wheel 14 along the winding direction, the left pull rope 6 and the right pull rope 7 are pulled back, the movable beam 9 of the gauze 5 is drawn close to the bottom frame 3, and the elastic element 8 stores energy to realize the closing of the gauze 5; when the hand rotates the winding and unwinding wheel 14 along the unwinding direction, the left pull rope 6 and the right pull rope 7 are released, the elastic element 8 releases the elasticity thereof to drive the winding shaft 4 to wind, the gauze 5 is wound on the winding shaft 4 gradually, and the movable beam 9 of the gauze 5 is closed to the gauze box 1 to realize the opening of the gauze 5.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a prevent screen window that draws to one side, includes screen box (1), two side frames (2), underframe (3), spool (4) and gauze (5), its characterized in that: the yarn box is characterized by further comprising a left pull rope (6), a right pull rope (7) and a rope pulling and releasing mechanism, wherein the two side frames (2) are respectively positioned on two sides of the yarn box (1) and are both positioned between the yarn box (1) and the bottom frame (3);

the winding shaft (4) is rotatably arranged in the yarn box (1), one end of the gauze (5) is fixed on the winding shaft (4), the other end of the gauze is fixed with a movable beam (9), two sides of the movable beam (9) are respectively connected with the two side frames (2) in a sliding manner, and an elastic element (8) used for enabling the winding shaft (4) to generate a winding trend is arranged between the winding shaft (4) and the yarn box (1);

the left pull rope (6) is fixed on the left side of the movable beam (9), the right pull rope (7) is fixed on the right side of the movable beam (9), and the rope pulling and releasing mechanism is used for driving the left pull rope (6) and the right pull rope (7) to move synchronously.

2. The screen window of claim 1, wherein: the rope pulling and releasing mechanism comprises a sliding block (10), the sliding block (10) is installed on the movable beam (9) in a sliding mode along the linear direction, the left pull rope (6) and the right pull rope (7) are connected with the sliding block (10) after being wound on the same side of the bottom frame (3), and therefore the left pull rope (6) and the right pull rope (7) move together when the sliding block (10) moves.

3. The screen window of claim 2, wherein: a right fulcrum (12) is arranged on the right side of the bottom frame (3), and one end of the left pull rope (6) far away from the movable beam (9) and one end of the right pull rope (7) far away from the movable beam (9) are sequentially wound around the right side of the right fulcrum (12) and the left side of the sliding block (10) and then fixed on the right side of the bottom frame (3);

or the right side of underframe (3) is equipped with two right fulcrums (12), the one end that walking beam (9) were kept away from in left side stay cord (6) is in proper order around the right side through a right fulcrum (12) and the left side after-fixing of slider (10) on the right side of underframe (3), the one end that walking beam (9) were kept away from in right side stay cord (7) is in proper order around the right side through another right fulcrum (12) and the left side after-fixing of slider (10) on the right side of underframe (3).

4. A screen window for resisting diagonal pulling according to claim 3, wherein: the left side of underframe (3) is equipped with left fulcrum (11), reach right fulcrum (12) after left fulcrum (11) is walked around in left stay cord (6).

5. The screen window of claim 4, wherein: the length direction of the part, positioned between the movable beam (9) and the left fulcrum (11), of the left pull rope (6) is parallel to the moving direction of the movable beam (9); the length direction of the part of the right pull rope (7) between the movable beam (9) and the right fulcrum (12) is parallel to the moving direction of the movable beam (9).

6. The screen window of claim 4, wherein: and the left fulcrum (11) and the right fulcrum (12) both adopt guide wheels, and the guide wheels are rotatably installed on the bottom frame (3).

7. The screen window of claim 2, wherein: still include the assembly pulley of two at least group interval distributions, every assembly pulley includes a pulley (17) and a directive wheel (18), pulley (17) all rotate and install on slider (10), directive wheel (18) all rotate and install the right side at underframe (3), directive wheel (18) all are located the right side of pulley (17), the one end that walking beam (9) were kept away from in left stay cord (6) and right stay cord (7) keep away from the one end of walking beam (9) all in proper order around directive wheel (18) and pulley (17) after-fixing in the right side of underframe (3) of every assembly pulley and pulley (17).

8. The screen window of claim 2, wherein: a right fulcrum (12) is arranged on the right side of the bottom frame (3), and one end of the left pull rope (6) far away from the movable beam (9) and one end of the right pull rope (7) far away from the movable beam (9) are fixed on the sliding block (10) after being wound around the right side of the right fulcrum (12);

or the right side of underframe (3) is equipped with two right fulcrums (12), the one end that walking beam (9) were kept away from in left stay cord (6) is fixed on slider (10) around the right side back through a right fulcrum (12), the one end that walking beam (9) were kept away from in right stay cord (7) is fixed on slider (10) around the right side back through another right fulcrum (12).

9. The screen window of claim 2, wherein: a sliding rod (13) is fixed in the bottom frame (3), and the sliding block (10) is sleeved outside the sliding rod (13) and is in sliding connection with the sliding rod (13).

10. A screen window for resisting diagonal pulling according to any one of claims 2 to 9, wherein: a damping means for providing a resistance to movement of the slider (10) is also included.

11. An anti-draw-to-pull screen as claimed in claim 10 wherein: the damping device comprises a friction piece, the friction piece is arranged on the bottom frame (3) or the sliding block (10), and when the sliding block (10) moves, the friction piece provides friction resistance for the sliding block (10);

or the damping device comprises a magnet, the magnet is arranged on the bottom frame (3) or the sliding block (10), and the magnetic force of the sliding block (10) is adsorbed on the bottom frame (3).

12. The screen window of claim 1, wherein: the rope pulling and releasing mechanism comprises a releasing and releasing wheel (14), the releasing and releasing wheel (14) is rotatably installed on the bottom frame (3), and one end of the left pull rope (6) far away from the movable beam (9) and one end of the right pull rope (7) far away from the movable beam (9) are fixed on the releasing and releasing wheel (14).

13. An anti-draw-to-pull screen as claimed in claim 12 wherein: the left side of underframe (3) is equipped with left fulcrum (11), left stay cord (6) are around fixing on receiving and releasing wheel (14) through left fulcrum (11), the right side of underframe (3) is equipped with right fulcrum (12), right stay cord (7) are around fixing on receiving and releasing wheel (14) through right fulcrum (12).

14. An anti-draw-to-pull screen as claimed in claim 13 wherein: the length direction of the part of the left pull rope (6) between the movable beam (9) and the left fulcrum (11) is parallel to the moving direction of the movable beam (9), and the length direction of the part of the right pull rope (7) between the movable beam (9) and the left fulcrum (11) is parallel to the moving direction of the movable beam (9).

15. The screen window of claim 1, wherein: the elastic element (8) is a coil spring or a torsion spring, one free end of the elastic element (8) is fixedly connected with the reel (4), and the other free end of the elastic element is fixedly connected with the yarn box (1).

16. The screen window of claim 1, wherein: one end of the yarn box (1) close to the bottom frame (3) is provided with a strip-shaped opening through which the yarn net (5) passes, two sides of the strip-shaped opening are provided with dust removing strips (15) with dust adsorption functions, and the yarn net (5) is in contact with the dust removing strips (15).

17. The screen window of claim 1, wherein: the two sides of the movable beam (9) are respectively provided with a roller (16), and the wheel surface of each roller (16) is in contact with the side frame (2) on the side.