Differential compensation device for sliding screen window or sliding screen door and sliding screen window or sliding screen door comprising same

Abstract

The utility model discloses a differential compensation device for a sliding screen window or a sliding screen door and the sliding screen window or the sliding screen door comprising the differential compensation device, and the differential compensation device comprises a fixed screw rod, a first rotating component, a second rotating component and a differential compensation component, wherein the first rotating assembly and the second rotating assembly are coaxially and rotatably arranged on the fixed lead screw, and the first rotating assembly and the second rotating assembly are in connection transmission through the differential compensation assembly so that the first rotating assembly and the second rotating assembly can rotate in a differential mode through the differential compensation assembly. By means of the device, the screen window or the screen door can be more easily opened or closed in the screen window opening or closing process, and the screen window can be stopped at any position when opened.

Description

TECHNICAL FIELD

[0001] The utility model relates to hinge technical field, especially a kind of differential compensation device for push-pull screen window or push-pull screen door and the push-pull screen window or push-pull screen door comprising the device. BACKGROUND

[0002] For the window or door of larger span, if traditional screen window fan leaf is used to cover, it cannot be completely unfolded when opening, which makes the opening area of window or door be reduced by screen window fan leaf, so the structure that screen can be wound or unwound is generally used to block the window or door for the window or door of larger span, and the existing winding screen generally only exists in completely blocked or completely open state, and most of them cannot stay at any position of window, so that the screen can be used according to actual needs to reserve any size of opening in window or door for people or objects to pass through; Moreover, such screen generally uses elastic structure to keep the resilience of screen, so that the resilience is small at the initial stage of unwinding, and gradually increases with the unwinding, so that the user needs to exert a large pulling force on the screen to achieve the unwinding of the screen at the last stage of unwinding. For the same reason, during the unwinding process, due to the large resilience at the initial stage of unwinding, if the user accidentally releases his hand, the screen will keep accelerating and winding rapidly under the action of resilience, which is easy to cause damage to the parts.

[0003] Since the winding diameter of the screen and the winding diameter of the wire rope are always changing at the initial stage of winding or unwinding, and the change rules of the two are opposite, in order to overcome the length difference between winding or unwinding, the Chinese utility model patent with authorization publication number CN115735046A solves the above-mentioned problem by adopting the mode of winding or unwinding the pulling wire along the taper inclined surface in sequence. However, in order to ensure that the pulling wire can be wound or unwound along the taper inclined surface once, the machining precision of the parts related to the taper is required to be extremely high, otherwise, if the wire rope is wound out of position, the winding or unwinding speed of the wire rope will not match the winding or unwinding speed of the screen, which will also make the push-pull screen window or push-pull screen door unable to be normally opened or closed. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a differential compensation device for push-pull screen window or push-pull screen door and a push-pull screen window or push-pull screen door comprising the device to solve the deficiencies of the prior art mentioned in the background.

[0005] To achieve the above object, the utility model provides the following technical scheme: a differential compensation device for push -and -pull screen window or push -and -pull screen door, including fixed screw rod, first rotation subassembly, second rotation subassembly and differential compensation subassembly, wherein the first rotation subassembly and second rotation subassembly coaxial rotatable setting on fixed screw rod, it is connected transmission through differential compensation subassembly between the first rotation subassembly and second rotation subassembly, to make the first rotation subassembly and second rotation subassembly can differential rotation through differential compensation subassembly, to make the unwinding length of the winding on the first rotation subassembly and the winding length of the winding on the second rotation subassembly be same, or the winding length of the winding on the first rotation subassembly and the unwinding length of the winding on the second rotation subassembly be same.

[0006] Preferably, the device further comprises a screen roller sleeved on the second rotation subassembly, the screen roller being capable of rotating synchronously with the second rotation subassembly, the screen roller being used for winding or unwinding the screen.

[0007] Preferably, the differential compensation subassembly comprises a transmission part, a first channel and a second channel; the transmission part is arranged on the fixed screw rod by screw threads; the transmission part has a first end matched with the first channel, and a second end arranged on the first end and matched with the second channel; the first channel is a straight channel arranged on the first rotation subassembly; the second channel is a curved channel arranged in the second transmission part; when the transmission part moves axially along the fixed screw rod, the straight channel and the curved channel make the first rotation subassembly and the second rotation subassembly form a continuously changing angle difference during rotation, i.e., when the transmission part moves axially along the fixed screw rod by a plurality of unit distances, the first rotation subassembly and the second rotation subassembly form a continuously changing angle difference.

[0008] When any one of the first rotation subassembly and the second rotation subassembly rotates as a power input, the transmission part moves axially along the fixed screw rod, and the first channel and the second channel make the first rotation subassembly and the second rotation subassembly rotate at different speeds under the action of the transmission part.

[0009] Preferably, the first rotation subassembly comprises a rotating disc, a belt-shaped member wound on the rotating disc, and a rotating cylinder connected to the rotating disc by insertion, the rotating disc and the rotating cylinder being rotatably arranged on the fixed screw rod, and the rotating cylinder and the rotating disc being capable of synchronous rotation about the fixed screw rod; the first channel is symmetrically arranged at two ends of the same radial direction of the rotating cylinder and extends along the axial direction of the rotating cylinder, and the first channel penetrates the side wall of the rotating cylinder; when the second rotation subassembly rotates under force, the first rotation subassembly rotates at different speeds from the second rotation subassembly under the action of the first channel, the second channel and the transmission part.

[0010] Preferably, the second rotating component is a cylindrical structure, which is rotatably sleeved outside the rotating drum in the first rotating component through a bearing, and the second channel is formed on the inner side wall of the cylindrical structure; when the first rotating component is forced to rotate, the second rotating component rotates at a differential speed with the first rotating component under the action of the first channel, the second channel and the transmission part.

[0011] Preferably, the cylindrical structure comprises an outer cylinder and an inner cylinder, the inner cylinder is sleeved in the outer cylinder and is fixedly connected with the outer cylinder, and the outer cylinder rotates synchronously with the inner cylinder; the second channel is arranged on the inner cylinder.

[0012] Preferably, the first end of the transmission part is located in the first channel, the second end is detachably arranged on the first end, and the second end is located in the second channel.

[0013] Preferably, in use, the unwinding direction of the belt-shaped member on the rotating disc of the first rotating component is opposite to the unwinding direction of the screen on the screen roller.

[0014] Preferably, the device further comprises two fixed components, one of which is fixed on one end of the fixed screw through a bearing, and the other of which is arranged on the end of the screen roller away from the first rotating component through a bearing; in use, the device is fixed on the outer frame of the screen window or screen door through the two fixed components.

[0015] Preferably, the fixed component comprises a fixed block fixedly arranged on the window or door frame, a connecting arm and an adjusting bolt connecting the connecting arm and the fixed block into an integral whole, the fixed block is provided with a cavity for accommodating the head of the adjusting bolt, one side of the cavity is provided with an adjusting gap, and the other side is provided with a screw cavity, one end of the adjusting arm is threadedly connected with the adjusting bolt, and the other end is connected with the fixed screw through a bearing or connected with the screen roller.

[0016] In addition, the utility model further provides a sliding screen window or sliding screen door comprising the device, which comprises a frame, a traction rod, a traction rope, a flexible screen, a tension spring and the differential compensation device.

[0017] Preferably, the differential compensation device for sliding screen window or door is arranged on one side of the window or door through a fixing assembly, one end of the screen winding on the screen roller is connected with the traction rod, and the two ends of the traction rod are connected with the belt-shaped member winding on the first rotating assembly through traction ropes and tension springs and pulleys arranged on the other side of the window or door.

[0018] Preferably, the window closing process is as follows: an acting force is applied to the traction rod away from the side where the differential compensation device is arranged, so that the traction rod moves away from the side where the differential compensation device is arranged, the traction rod drives the second rotating assembly to rotate through the screen to release the screen winding on the screen roller, and meanwhile the second channel drives the transmission part to rotate spirally, the transmission part rotates to drive the first rotating assembly to rotate differentially to wind the belt-shaped member moved by the traction rod on the rotating disc; the window opening process is as follows: an acting force is applied to the traction rod towards the side where the differential compensation device is arranged, so that the traction rod moves towards the side where the differential compensation device is arranged, the traction rod moves to unwind the belt-shaped member winding on the first rotating assembly from the rotating disc through the traction rope, and the unwinding process of the belt-shaped member drives the first rotating assembly to rotate, and meanwhile the first channel arranged on the rotating drum drives the transmission part to rotate on the fixed screw rod, the rotating transmission part drives the second rotating assembly to rotate differentially through the second channel to make the screen be wound on the screen roller synchronously with the movement of the traction rod.

[0019] Compared with the prior art, the differential compensation device for sliding screen window or door has the following beneficial effects:

[0020] In the utility model, the first rotating assembly and the second rotating assembly realize differential rotation through the transmission part, so as to compensate the length difference of winding or unwinding caused by the thickness change of the belt-shaped member roll and the thickness change of the screen roll.

[0021] In the utility model, the first rotating assembly or the second rotating assembly is in a static state without artificial external force, and any one of the two can be used as a driving power source, so that the two rotating assemblies can keep synchronous differential rotation, which makes the first rotating assembly and the second rotating assembly in the device can stop rotating at any point and keep static state.

[0022] In the utility model, the second rotating assembly is arranged outside the rotating drum of the first rotating assembly through the bearing sleeve, so that the second rotating assembly can keep rotating at a relatively independent rotating speed with the first rotating assembly; the differential assembly makes the second rotating assembly can rotate relatively independently but not completely separate from the constraint of the first rotating assembly.

[0023] In the utility model, the rotating disc and the rotating drum in the first rotating assembly are connected through insertion, and are connected in a relatively fixed manner, so that they can keep synchronous rotation, which is convenient for assembling and operating each component of the device, and is also convenient for repairing and replacing damaged components. Attached Figure Description

[0024] Figure 1 This is an exploded view of the present invention.

[0025] Figure 2 This is a cross-sectional view of the present invention.

[0026] Figure 3 This is a perspective view of the present invention after the second transmission component is hidden.

[0027] Figure 4 This is a perspective view of the turntable in the first rotating component of this utility model.

[0028] Figure 5 This is a perspective view of the rotating cylinder in the first rotating assembly of this utility model.

[0029] Figure 6 This is a perspective view of the second rotating component of this utility model in a single-cylinder state.

[0030] Figure 7 This is a perspective view of the second rotating component of this utility model, which consists of two cylindrical structures assembled together.

[0031] Figure 8 This is a cross-sectional view of the second rotating component of this utility model, which consists of two cylindrical structures assembled together.

[0032] Figure 9 This is a perspective view of the transmission part of this utility model.

[0033] Figure 10 This is an exploded view of the transmission part of this utility model.

[0034] Figure 11 A perspective view of a door or window on which the above-mentioned device is installed.

[0035] Figure 12 To conceal the frame of the door or window where the above-mentioned device is installed. Figure 1 .

[0036] Figure 13 To conceal the frame of the door or window where the above-mentioned device is installed. Figure 2 .

[0037] Figure 14 for Figure 13 Enlarged view of section A. Detailed Implementation

[0038] The following will be based on the embodiments of this utility model. Figures 1-14The technical solutions in the embodiments of the present application are clearly and completely described, and obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0039] The differential compensation device for the sliding screen or the sliding screen door relates to the technical field of the sliding screen or the sliding screen door, and mainly aims to solve the problem that the unwinding or winding length of the screen net and the winding or unwinding length of the traction rope (i.e. the belt-shaped member in the following description) exist length difference in the same time during the opening or closing process of the sliding screen.

[0040] The reason for the above length difference is as follows: since the winding direction of the screen net is opposite to the winding direction of the traction rope or the belt-shaped member, that is, when the screen net is unwound, the traction rope or the belt-shaped member is wound; when the screen net is wound, the traction rope or the belt-shaped member is unwound, that is, the change of the winding radius of the screen net in the above process is just opposite to the change of the winding radius of the traction rope or the belt-shaped member, that is, the process that the winding radius of the screen net gradually increases is accompanied by the process that the unwinding radius of the traction rope or the belt-shaped member gradually decreases, or the process that the unwinding radius of the screen net gradually decreases is accompanied by the process that the winding radius of the traction rope or the belt-shaped member gradually increases. For example, there is a length difference between the winding length of the screen net winding one turn and the unwinding length of the belt-shaped member unwinding one turn in this process.

[0041] As shown in Figures 1-10 In the present embodiment, a differential compensation device for the sliding screen or the sliding screen door comprises a fixed screw rod 10, a first rotating assembly 20, a second rotating assembly 30 and a differential compensation assembly 40, wherein the first rotating assembly 20 and the second rotating assembly 30 are coaxially and rotatably arranged on the fixed screw rod 10, that is, the first rotating assembly 20 and the second rotating assembly 30 can simultaneously and synchronously rotate relative to the fixed screw rod 10, and the first rotating assembly 20 and the second rotating assembly 30 are connected and driven through the differential compensation assembly 50, so as to make the first rotating assembly 20 and the second rotating assembly 30 differentially rotate through the differential compensation assembly 50, so that the unwinding length of the winding object on the first rotating assembly 20 is the same as the winding length of the winding object on the second rotating assembly 30, or the winding length of the winding object on the first rotating assembly 20 is the same as the unwinding length of the winding object on the second rotating assembly 30.

[0042] The fixed screw rod 10 provides a fixed carrier for the first rotating component 20 and the second rotating component 30, and also serves as the rotating axis of the first rotating component 20 and the second rotating component 30. In use, the two rotating components are usually fixed on the frame 1 of the door or window through one end or both ends of the fixed screw rod 10. When one end of the fixed screw rod 10 is fixed on the frame 1 of the door or window, the second rotating component 30 or the screen roller 40 is fixed on the other side of the frame 1 of the door or window through a bearing away from the one end of the fixed screw rod 10, so that the device is stably arranged on the frame 1 of the door or window, and the first rotating component 20 and the second rotating component 30 can rotate relative to the fixed screw rod 10 or the door or window.

[0043] In some embodiments, the screen or flexible fabric can be directly wound or unwound on the second rotating component 30, or a special screen roller 40 can be arranged on the second rotating component 30 for winding or unwinding the screen, and the screen roller 40 is used for winding or unwinding the screen and can rotate synchronously with the second rotating component 30. In specific applications, the part of the second rotating component 30 for winding or unwinding the screen or the specially arranged screen roller 40 is usually cylindrical, polygonal or the like, and the cylindrical shape is the most preferred.

[0044] When the screen is wound on the specially arranged screen roller 40 or unwound from the screen roller 40, the second rotating component 30 and the screen roller 40 are fixed through spline, i.e. the spline is arranged on the outside of the second rotating component 30, and the spline groove is arranged on the inner wall of the screen roller 40, and the two are connected through the spline and the spline groove. Of course, the positions of the spline and the spline groove can be interchanged. In this way, the relative rotation between the second rotating component 30 and the screen roller 40 can be prevented.

[0045] In addition, as shown in the figure, the differential compensation component 50 includes a transmission part 501, a first channel 502 and a second channel 503. The transmission part 501 is arranged on the fixed screw rod 10 through a thread, and can rotate upward or downward along the fixed screw rod 10 under the action of the first rotating component 20 or the second rotating component 30. Specifically, the transmission part 501 has a sliding seat 5011 connected to the fixed screw rod 10 through a thread, two first ends 5012 matched with the first channel 502, and two second ends 5013 arranged on the first ends 5012 and matched with the second channel 503. The two first ends 5012 are arranged at the two ends of the same radial direction of the fixed screw rod 10, and the two second ends 5013 are arranged on the sides away from the sliding seat 5011 of the first ends 5012, respectively.

[0046] Further, the first channel 502 is a straight channel arranged on the first rotating component 20, and the second channel 503 is a curved channel arranged in the second rotating component 30.

[0047] It should be noted that the first end 5012 of the transmission part 501 is located in the first channel 502, the second end 5013 can be detachably arranged on the first end 5012, and the second end 5013 is located in the second channel 503, so as to facilitate the installation of the transmission part.

[0048] In use, when any one of the first rotating assembly 20 and the second rotating assembly 30 is rotated as a power input side, the channel on the rotating assembly as the power input side acts on the transmission part 501, the transmission part 501 moves along the fixed screw rod 10 in the axial direction, and the other rotating assembly as the channel on the rotating assembly rotates under the action of the transmission part 501, so that the first rotating assembly 20 and the second rotating assembly 30 rotate at different speeds.

[0049] When the first rotating assembly is rotated as a power input side, the first channel 502 rotates with the first rotating assembly 20, thereby driving the transmission part 501 to rotate by driving the first end 5012 through the first channel 502, so that the first end 5012 and the second end 5013 also rotate and rise or fall, and then the second rotating assembly 30 is driven to rotate by the action of the second end 5013 on the second channel 503. Since the first end 5012 is linked with the first channel 502 (i.e. a straight channel) on the first rotating assembly 20, and the second end 5013 is linked with the second rotating assembly 503 through the second channel 503 (i.e. a curved channel), a speed difference between the first rotating assembly 20 and the second rotating assembly 30 is caused.

[0050] Similarly, when the second rotating assembly 30 is rotated as a power input side, the second channel 503 rotates with the second rotating assembly 30, thereby driving the first end 5012 and the transmission part 501 to rotate by driving the second end 5013 through the second channel 30, so that the first end 5012 drives the first rotating assembly 20 and the second rotating assembly 30 to rotate in the same direction. Since the first end 5012 drives the first rotating assembly 20 through the straight channel while spirally rising or falling, and the second rotating assembly 30 drives the second end 5013 to spirally rise or fall through the curved channel, a speed difference between the first rotating assembly 20 and the second rotating assembly 30 is caused.

[0051] It should be noted that when the transmission part 501 ascends or descends along the fixed screw rod 10 in the axial direction, the linear channel and the curved channel make the first rotating assembly 20 and the second rotating assembly 30 form a continuously changing angle difference in the rotating process, that is, the first rotating assembly 20 and the second rotating assembly 30 form a continuously changing speed difference under the action of the differential assembly 50.

[0052] In order to explain the continuously changing angle difference, the following definitions are made: mark the mark points a and b in the same vertical direction on the outer edges of the first rotating assembly 20 and the second rotating assembly 30, at this time the radian between the projections of the two mark points a and b on the horizontal plane is 0. On this basis, the continuously variable angle difference change rule is that when the first rotating assembly 20 is taken as the power input side (that is, the unwinding process of the belt-shaped member), the radian directly generated by the two mark points a and b when the first rotating assembly 20 rotates one circle is continuously variable.

[0053] In some embodiments, the first rotating assembly 20 includes a rotating disc 201, a belt-shaped member 202 wound on the rotating disc, and a rotating drum 203 connected to the rotating disc 201 by insertion. The rotating disc 201 and the rotating drum 203 are rotatably arranged on the fixed screw rod 10 through bearings (sleeves), and the rotating drum 203 and the rotating disc 201 can synchronously rotate about the fixed screw rod 10; the first channel 502 is symmetrically arranged at both ends of the same radial direction of the rotating drum 203 and extends along the axial direction of the rotating drum 203, and the first channel 502 penetrates the side wall of the rotating drum 203; when the second rotating assembly 30 is forced to rotate, the first rotating assembly 20 differentially rotates with the second rotating assembly 30 under the action of the first channel 502, the second channel 503, and the transmission part 501.

[0054] Further, the rotating disc 201 is in a disc structure, and the lower side of the rotating disc 201 is provided with a rotating drum insertion slot 2011, the rotating drum 203 is inserted into the rotating drum insertion slot 2011, and the rotating drum 203 and the rotating disc 201 are connected by insertion, glue welding, or the like, so that they cannot relatively rotate, so that the rotating drum 203 can synchronously rotate with the rotating disc 201. In order to ensure that the belt-shaped member 202 can be neatly wound on the rotating disc 201, disc-shaped side stops 2012 are arranged on the upper and lower sides of the rotating disc 201, and the two side stops 2012 limit the belt-shaped member 202 to be wound in a single layer in sequence. The belt-shaped member 202 wound on the rotating disc 201 is in a belt shape, such as a fiber belt, a steel belt, or the like, one end of the belt-shaped member 202 is fixedly connected to the side of the rotating disc 201, so as to ensure that the rotating disc 201 can be driven to rotate when the belt-shaped member 202 is subjected to a pulling force.

[0055] In the foregoing embodiment, the first passage 502 on the rotating drum 203 is closed at the lower end and open or closed at the upper end. When the first passage 502 is open at the upper end, the first end 5012 of the transmission part 501 and the sliding seat 5011 can be in an integrated structure or in a detachable combination, which facilitates the assembly of the components. At the same time, the rotating drum slot 2011 on the lower side of the rotating disc 201 is also matched into two parts. When the first passage 502 is closed at the upper end, the sliding seat 5011, the first end 5012, and the second end 5013 of the transmission part 501 are detachable from each other, for example, the first end 5012 is connected to the sliding seat 5011 by threads, and the second end 5013 is connected to the first end 5012 by threads. This makes it easier to install and assemble the transmission part 501 and the first rotating assembly 20.

[0056] In some embodiments, the second rotating assembly 30 is a cylindrical structure, which is rotatably sleeved outside the rotating drum 203 in the first rotating assembly 20, and the second passage 503 is formed on the side wall of the cylindrical structure. When the first rotating assembly 20 is forced to rotate, the second rotating assembly 30 rotates at a different speed from the first rotating assembly 20 under the action of the first passage 502, the second passage 503, and the transmission part 501. The foregoing cylindrical structure can be a single cylindrical structure or two cylindrical structures sleeved together.

[0057] It should be noted that when the cylindrical structure is designed as two sleeved structures, it specifically includes an outer cylinder 301 and an inner cylinder 302, the inner cylinder 302 is sleeved inside the outer cylinder 301, and the inner cylinder 302 is fixedly connected to the outer cylinder 301, so that the inner cylinder 302 and the outer cylinder 301 cannot rotate relative to each other, but are in a synchronous rotating state, that is, the outer cylinder 301 rotates coaxially and synchronously with the inner cylinder 302, the second passage 503 is arranged on the inner cylinder 302, and the second passage 503 penetrates the cylinder wall of the inner cylinder 302, so that the second end 5013 is arranged in the second passage 503 and connected with the first end 5012. The foregoing inner cylinder 302 and outer cylinder 301 can be tightly sleeved by the difference in their diameters, or can be fixedly connected by gluing or splines, and of course other possible fixed connection methods are not excluded here.

[0058] It should be noted that the unwinding direction of the belt member 202 on the rotating disc 201 of the first rotating assembly 20 is opposite to the unwinding direction of the screen on the screen roller 40. When the belt member 202 on the first rotating assembly 20 is unwinding, the screen on the second rotating assembly 30 or the screen roller 40 is in the unwinding process; when the belt member 202 on the first rotating assembly 20 is winding, the screen on the second rotating assembly 30 or the screen roller 40 is in the unwinding process. That is, the thickness change of the belt member 202 winding is opposite to the thickness change of the screen winding, which is why the first rotating assembly 20 and the second rotating assembly 30 need to have a continuously changing speed difference during rotation, because only a continuously changing speed difference can ensure that the winding length of one side is the same as the unwinding length of the other side.

[0059] In actual application, in order to facilitate the connection of the device with the outer frame of the screen window or screen door, the device further comprises two fixing assemblies 60, one of which is fixed on one end of the fixed lead screw 10 through a bearing, and the other of which is arranged on the end of the screen roller 40 away from the first rotating assembly 20 through a bearing. In use, the device is fixed on the outer frame 1 of the screen window or screen door through the two fixing assemblies 60, so that the first rotating assembly 20, the second rotating assembly 30 and the screen roller 40 can all rotate.

[0060] Specifically, the fixing assembly 60 comprises a fixing block 601 fixedly arranged on the window or door frame, a connecting arm 602 and an adjusting bolt 603 connecting the connecting arm 602 and the fixing block 601 into an integral whole. The fixing block 601 has a cavity 6011 for accommodating the head of the adjusting bolt 603. One side of the cavity 6011 is provided with an adjusting gap 6012, and the other side is provided with a screw cavity. The end of the adjusting arm 602 is located in the screw cavity and is slidable. One end of the adjusting arm 602 located in the screw cavity is threadedly connected with the adjusting bolt 603, and the other end is connected with the fixed lead screw 10 or the screen roller 40 through a bearing.

[0061] As shown in Figures 1-14 As an application of the above embodiment, the utility model further provides a sliding screen window or sliding screen door comprising the device. The sliding screen window or sliding screen door comprises a frame 1, a traction rod 2, a traction rope 3, a flexible screen 4, a tension spring 5 and the differential compensation device 6. The differential compensation device 6 compensates for the difference between the winding or unwinding length of the belt member 202 on the first rotating assembly 20 and the unwinding or winding length of the screen 4 on the screen roller 40 connected with the second rotating assembly 30 during the movement of the screen 4, so that the winding length of the belt member 202 is the same as the unwinding length of the screen 4, or the unwinding length of the belt member 202 is the same as the winding length of the screen 4.

[0062] Specifically, the differential compensation device for the sliding screen is arranged on the inner side of the side frame of the window or door through the fixing assembly 60, one end of the screen 4 wound on the screen roller 40 is connected with the traction rod 3, the traction rod 3 is provided with a screen clamping groove, the screen 4 is clamped in the screen clamping groove through the pressing strip, the two ends of the traction rod 3 are respectively connected with the belt-shaped member 202 wound on the first rotating assembly 20 through the tension spring 5, the traction rope 2 and the pulley arranged on the window or door, that is, one end of the two traction ropes 2 is connected with the belt-shaped member 202, and the other end is connected with the traction rod 3 through the pulley and the tension spring 5 on the traction rod 3 after changing direction. The tension spring 5 is always in a stretched state to tighten the screen 4 and reduce the downward deflection of the upper side of the screen 4 due to its own weight.

[0063] Further, two tension springs 5 are arranged on the traction rod 3, the two tension springs 5 are respectively connected with one traction rope 2, each traction rope 2 is connected with the belt-shaped member 202 in the differential compensation device 6 after changing direction through the pulley at the end of the traction rod 3 and the pulley arranged on the other side of the window or door, so that the two traction ropes 2 at the upper and lower ends together with the screen 4 can keep the traction rod 3 in a vertical state, and the traction rod 3 can pull the screen 4 or the traction rope 2 when the operator pushes the traction rod 3 in one direction in the horizontal direction (the direction is the direction of closing or opening the screen).

[0064] For example, when the traction rod 3 is pushed to the other side away from the differential compensation device 6 (i.e. the screen 4 is closed), the traction rod 3 pulls the screen 4, so that the screen 4 is gradually unwound from the second rotating assembly 30 or the screen roller 40, and the unwound screen 4 covers the window or door, and in the unwinding process of the screen 4, the second rotating assembly 30 drives the first rotating assembly 20 to rotate at the same speed through the transmission part 501, so that the belt-shaped member 202 is wound on the first rotating assembly 20 at the same speed; conversely, when the traction rod 3 is pushed to the other side close to the differential compensation device 6 (i.e. the screen is opened), the traction rod 3 pulls the traction rope 2, and under the traction of the traction rope 2, the first rotating assembly 20 rotates, and at the same time, the belt-shaped member 202 is gradually unwound from the rotating disc 201 of the first rotating assembly 20, and at the same time, the second rotating assembly 30 rotates at the same speed as the first rotating assembly 20 under the driving of the transmission part 501, and under the action of the rotating second rotating assembly 30, the screen 4 is gradually wound on the second rotating assembly 30 or the screen roller 40.

[0065] It should be noted that in the winding or unwinding process of the screen, there may be three cases for the diameter of the remaining screen on the second rotating assembly 30 or the screen roller 40 when the screen is wound and the diameter of the remaining belt-shaped member 202 wound on the first rotating assembly 20. Taking the unwinding process of the screen as an example.

[0066] In case 1, the diameter of the remaining yarn web roll on the yarn web roller 40 and the diameter of the remaining belt member roll on the first rotating assembly 20 changes from a difference to a medium difference to a difference again (i.e. the diameter difference decreases from large to small to equal to large again). In this case, the second channel 503 is a symmetrical curved channel with respect to the midpoint of the second channel 503, and the curvature of the curve gradually increases (i.e. the bending degree of the curved channel gradually increases) during the extension of the curve from the midpoint to the two ends of the curved channel 503. Thus, during the movement of the transmission part 501 along the first channel 502 and the second channel 503 from one end to the other end, the speed difference between the first rotating assembly 20 and the second rotating assembly 30 changes from large to small, until it is equal, and then changes from small to large again.

[0067] It should be noted that when the diameter of the remaining yarn web roll on the second rotating assembly 30 or the yarn web roller 40 is equal to the diameter of the belt member 202 wound on the first rotating assembly 20, it is the critical point of the differential speed rotation of the first rotating assembly 20 and the second rotating assembly 30. Taking the unwinding of the yarn web 4 as an example, during the unwinding of the yarn web 4, the difference between the winding diameter of the yarn web 4 wound on the second rotating assembly 30 and the winding diameter of the belt member 202 wound on the first rotating assembly 20 will experience two processes: 1. gradually decreasing to equal; 2. gradually increasing from equal again. During the two processes, the second rotating assembly 30 rotates one revolution to unwind a certain length of the yarn web, and the first rotating assembly 20 needs to rotate different number of revolutions to make the belt member 202 wind the same length, and during this process, the length difference changes from large to small and then from small to large. This requires the speed difference between the first rotating assembly 20 and the second rotating assembly 30 to change from large to small and then from small to large. Here, the change from large to small and then from small to large means that during the change from large to small, the speed of the first rotating assembly 20 is greater than the speed of the second rotating assembly 30, and during the change from small to large, the speed of the first rotating assembly 20 is less than the speed of the second rotating assembly 30.

[0068] In case 2, the diameter of the remaining yarn web roll on the yarn web roller 40 is always greater than the diameter of the remaining belt member roll on the first rotating assembly 20 during the unwinding of the yarn web 4.

[0069] In this case, the curvature of the curve gradually decreases (i.e. the bending degree of the curved channel gradually decreases) during the extension of the curve from one end to the other end of the curved channel, so that during the movement of the transmission part 501 along the first channel 502 and the second channel 503 from one end to the other end, the speed difference between the first rotating assembly 20 and the second rotating assembly 30 changes from large to small.

[0070] It should be noted that taking the unwinding of the screen 40 as an example: during the unwinding of the screen 40 from the beginning to the end, the difference between the winding diameter of the screen 40 on the second rotating assembly 30 and the winding diameter of the belt member 202 on the first rotating assembly 20 gradually decreases, that is, when the belt member 202 is wound with a length of the belt member 202 equal to the length of the screen released by each winding of the screen 4, the number of revolutions required for the first rotating assembly 20 to rotate gradually decreases, that is, the speed difference between the first rotating assembly 20 and the second rotating assembly 30 gradually decreases, at this time, the differential compensation assembly 50 can compensate for the speed difference between the two, that is, during the unwinding of the screen, the differential compensation assembly 6 gradually reduces the speed difference between the two.

[0071] Case 3. During the process of unwinding the screen 4 from the beginning to the end, the remaining winding diameter of the screen on the screen roller 40 is always smaller than the diameter of the remaining winding of the belt member on the first rotating assembly 20.

[0072] In this case, the curvature gradually increases during the extension of the curved channel from one end to the other end (that is, the bending degree of the curved channel gradually increases), so that the speed difference between the first rotating assembly 20 and the second rotating assembly 30 changes from small to large during the movement of the transmission part 501 along the first channel 502 and the second channel 503 from one end to the other end of the channel.

[0073] It should be noted that taking the unwinding of the screen as an example: during the unwinding of the screen 4 from the beginning to the end, the difference between the winding diameter of the screen 4 on the second rotating assembly 30 and the winding diameter of the belt member 202 on the first rotating assembly 20 gradually increases, that is, when the belt member 202 is wound with a length of the belt member equal to the length of the screen released by each winding of the screen 4, the number of revolutions required for the first rotating assembly 20 to rotate gradually decreases, that is, the speed difference between the first rotating assembly 20 and the second rotating assembly 30 gradually increases, at this time, the differential compensation assembly 50 can compensate for the speed difference between the two, that is, during the unwinding of the screen, the differential compensation assembly 6 gradually increases the speed difference between the two.

[0074] The process of closing the screen or screen door is as follows: an acting force is applied to the traction rod 3 away from the side where the differential compensation 6 is located, so that the traction rod 3 moves away from the side of the differential compensation device 6, the traction rod 3 drives the second rotating assembly 30 to rotate through the screen 4, to release the screen 4 wound on the screen roller 40, at the same time the second channel 503 drives the transmission part 501 to rotate spirally, the transmission part 501 rotates to drive the first rotating assembly 20 to rotate differentially, to wind the belt member 202 moved and released by the traction rod 3 on the rotating disc 201.

[0075] The process of opening the screen or screen door is as follows: the traction rod 3 is applied to the side of the differential compensation device 6 to move the traction rod 3 to the side of the differential compensation device 6, the traction rod 3 moves through the traction rope 2 to unwind the belt member 202 wound on the first rotating assembly 20 from the rotating disc 201, the unwinding process of the belt member 202 drives the first rotating assembly 20 to rotate, and the first channel 502 provided on the rotating drum 203 drives the transmission part 501 to rotate on the fixed screw rod 10, the rotating transmission part 501 drives the second rotating assembly 30 to rotate at a differential speed through the second channel 503 to make the screen 4 move synchronously and be wound on the screen roller 40 with the traction rod 3.

[0076] Of course, no matter whether the screen or screen door is opened or closed, or in the intermediate state, the tension spring 5 on the traction rod 3 is always in the stretched state to tension the traction rope 2 through the tension spring 5, thereby preventing the middle of the side edge of the screen 4 from sagging due to its own weight, so that the gap of the screen edge can be avoided.

[0077] The above is only the preferred embodiment of the present application, and it should be pointed out that for those skilled in the art, without departing from the technical principles of the present application, a number of improvements and substitutions can be made, and these improvements and substitutions are considered to be within the protection scope of the present application.

Claims

1. A differential compensation device for a sliding screen window or door, characterized in that, The device comprises a fixed screw rod, a first rotating component, a second rotating component and a differential compensation component, wherein the first rotating component and the second rotating component are coaxially arranged on the fixed screw rod, and the first rotating component and the second rotating component are connected and driven by the differential compensation component to rotate at different speeds through the differential compensation component.

2. A differential compensation device for a sliding screen window or door according to claim 1, characterized in that, The device further comprises a gauze roller sleeved on the second rotating component, which can rotate synchronously with the second rotating component, and the gauze roller is used for winding or unwinding gauze.

3. A differential compensation device for a sliding screen window or door according to claim 1 or 2, characterized in that, The differential compensation component comprises a transmission part, a first channel and a second channel, wherein the transmission part is arranged on the fixed screw rod through screwing, the transmission part has a first end matched with the first channel and a second end arranged on the first end and matched with the second channel, the first channel is a straight channel arranged on the first rotating component, and the second channel is a curved channel arranged in the second transmission part; when the transmission part rotates axially upwards or downwards along the fixed screw rod, the straight channel and the curved channel make the first rotating component and the second rotating component form a continuously changing angle difference during rotation; when any one of the first rotating component and the second rotating component is used as a power input side to rotate, the transmission part moves axially along the fixed screw rod, the first channel and the second channel are driven by the transmission part, and the first rotating component and the second rotating component rotate at different speeds.

4. A differential compensation device for a sliding screen window or door according to claim 3, characterized in that, The first rotating component comprises a rotating disc, a belt-shaped member wound on the rotating disc and a rotating cylinder connected to the rotating disc through insertion, the rotating disc and the rotating cylinder are rotatably arranged on the fixed screw rod, and the rotating cylinder and the rotating disc can synchronously rotate with the fixed screw rod as the axis; the first channel is symmetrically arranged at two ends of the same radial direction of the rotating cylinder and extends along the axial direction of the rotating cylinder, and the first channel penetrates the side wall of the rotating cylinder; when the second rotating component is forced to rotate, the first rotating component rotates at different speeds with the second rotating component under the action of the first channel, the second channel and the transmission part.

5. A differential compensation device for a sliding screen window or door according to claim 3, characterized in that, The second rotating component is in a cylindrical structure, the cylindrical structure is rotatably sleeved outside the rotating cylinder in the first rotating component through a bearing, and the second channel is arranged on the inner side wall of the cylindrical structure; when the first rotating component is forced to rotate, the second rotating component rotates at different speeds with the first rotating component under the action of the first channel, the second channel and the transmission part.

6. A differential compensation device for a sliding screen window or door according to claim 5, characterized in that, The cylindrical structure comprises an outer cylinder and an inner cylinder, the inner cylinder is sleeved in the outer cylinder and is fixedly connected with the outer cylinder, the outer cylinder synchronously rotates with the inner cylinder, and the second channel is arranged on the inner cylinder.

7. A differential compensation device for a sliding screen window or door according to claim 6, characterized in that, The first end of the transmission part is located in the first channel, and the second end is detachably arranged on the first end and located in the second channel.

8. A differential compensation device for a sliding screen window or door according to claim 7, characterized in that, During use, the belt-shaped member on the rotating disc of the first rotating component is unwound in a direction opposite to the unwinding direction of the gauze wound on the gauze roller.

9. A sliding screen window or door, characterized by The sliding screen window or sliding screen door comprises a frame, a traction rod, a traction rope, a flexible screen, a tension spring and the differential compensation device of any one of claims 1-8; the screen window or screen door compensates for the difference between the unwinding or winding length of the belt-shaped member on the first rotating assembly and the unwinding or winding length of the screen on the screen roller connected to the second rotating assembly during the movement of the screen, so that the unwinding length of the belt-shaped member is the same as the unwinding length of the screen, or the winding length of the belt-shaped member is the same as the winding length of the screen.

10. A sliding screen window or door according to claim 9, wherein, The differential compensation device for the sliding screen window is arranged on one side of the window or door through the fixing assembly, one end of the screen wound on the screen roller is connected to the traction rod, the two ends of the traction rod are respectively connected to the belt-shaped member wound on the first rotating assembly through the traction rope, the tension spring and the pulley arranged on the other side of the window or door, and the tension spring is always in the stretched state to tighten the screen and reduce the downward deflection of the upper side of the screen due to the self weight.

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