Screen window

Abstract

The utility model belongs to the technical field of doors and windows, and discloses a screen window which comprises a winding drum, a gauze element, a spring assembly, a line wheel, a line rope and a moving part. The gauze element is wound and stored on the winding drum, the free end of the gauze element is connected with the moving part, the spring assembly is arranged in the winding drum in a penetrating mode, the first end of the spring assembly and the winding drum are stopped in the circumferential direction, and the second end of the spring assembly can freely rotate relative to the winding drum so that the spring assembly can elastically deform. The wire wheel is associated with the second end of the spring assembly so as to be in linkage with the second end of the spring assembly, one end of the wire rope is wound and connected to the wire wheel, and the other end of the wire rope is connected with the moving part. According to the utility model, the gauze element can be pulled out or pulled back more easily and conveniently, and certain tension can be provided when the gauze element is pulled out and moves back and forth through the arrangement that one end of the spring assembly is circumferentially locked with the reel and the other end of the spring assembly can freely rotate with the reel, so that the gauze element is more stable.

Description

Technical Field

[0001] The utility model belongs to the technical field of doors and windows, and particularly relates to a screen window. Background Art

[0002] Screen refers to the net that keeps out mosquitoes, flies and insects. The main function of screen is to prevent mosquitoes.

[0003] In the prior art, screens mainly include sliding screens and retractable screens. Retractable screens are further divided into tracked screens and trackless screens. Tracked screens rely on the frame edge of the lower window frame as a slide rail to facilitate the sliding of the inner movable column, and the screen is retracted by the elastic reel of the spring reel. Trackless screens are different in that their window frames are trackless and can slide back and forth under the guidance of a chain track mechanism, and the screen is retracted in conjunction with the spring reel.

[0004] Since the existing retractable screen window uses a spring reel, one end of the spring reel is fixed, and the other end is movable and connected to the reel for winding the screen, the elastic force will be relatively large when pulling and pulling back, which makes pulling more laborious and not conducive to relatively stable rewinding. In the prior art, a resistance mechanism for increasing the moving column or a mechanism is usually provided to facilitate moving the moving column to a certain position and suspending it, but there is also a situation where pulling is more laborious when pulling the screen window. Utility Model Content

[0005] In view of this, an object of the present invention is to provide a screen window to solve the problem that the existing retractable screen window is laborious to pull.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A screen window, comprising a drum, a gauze, a spring assembly, a wire wheel, a wire rope and a moving part; the gauze net is wound and stored on the drum, the free end of the gauze net is connected to the moving part, the spring assembly is inserted into the drum, a first end of the spring assembly is stopped in the circumferential direction, a second end of the spring assembly is freely rotatable relative to the drum to elastically deform the spring assembly, the wire wheel is associated with the second end of the spring assembly to be linked with the second end of the spring assembly, one end of the wire rope is wound and connected to the wire wheel, and the other end is connected to the moving part;

[0008] When the moving part moves in the forward direction, the gauze is released from the reel and the line wheel winds up and retracts the line. When the moving part moves in the reverse direction, the reel winds up and retracts the gauze and the line is released from the line wheel.

[0009] In a possible implementation, the wire wheel is in detachable transmission connection with the second end of the spring assembly;

[0010] When the wire wheel is in driving connection with the second end of the spring assembly, the wire wheel and the second end of the spring assembly are in linkage; when the wire wheel is separated from the second end of the spring assembly, the wire wheel and the second end of the spring assembly rotate independently of each other.

[0011] In a possible implementation manner, a transmission member is further included, and the transmission member is movably arranged on the wire wheel to switch between a transmission position and a separation position;

[0012] When the transmission member is in the transmission position, the transmission member is connected between the wire wheel and the second end of the spring assembly for transmission; when the transmission member is in the separation position, the transmission member is separated from the second end of the spring assembly to disconnect the transmission.

[0013] In a possible implementation manner, the transmission member includes a cylindrical member, and the cylindrical member is slidably arranged in a through hole in the middle of the wire wheel along the rotation axis of the wire wheel, and the cylindrical member is circumferentially stopped relative to the wire wheel;

[0014] When the cylindrical member slides and switches to the transmission position, the cylindrical member is sleeved on the second end of the spring assembly and is circumferentially stopped with the second end of the spring assembly; when the cylindrical member slides and switches to the separation position, the cylindrical member is separated from the second end of the spring assembly, and an adjusting portion is arranged at the second end of the spring assembly, and the adjusting portion is used for cooperating with an adjusting member passing through the cylindrical member to rotate the second end of the spring assembly.

[0015] In a possible implementation manner, the outer wall of the cylindrical member and the through hole of the wire wheel are non-circular and matched for circumferential stopping, or a protrusion is arranged on the outer wall of the cylindrical member, and a limiting groove along the rotation axis is arranged on the inner wall of the through hole and is matched with the protrusion for circumferential stopping; the inner wall of the cylindrical member and the outer wall of the second end of the spring assembly are non-circular and matched for circumferential stopping.

[0016] In a possible implementation manner, the transmission member further includes a handle portion arranged on the cylindrical member.

[0017] In a possible implementation manner, the wire wheel includes a first engaging member and a second engaging member. The first engaging member includes a connecting channel and a first stopping and cooperating portion. A limiting portion extending radially inward is arranged at one end of the connecting channel; the second engaging member includes a second stopping and cooperating portion and a plurality of limiting plates extending into the connecting channel and distributed circumferentially. The limiting plates and the inner wall of the connecting channel form a limiting groove distributed axially. The limiting groove is slidably matched with the protrusion on the transmission member for circumferential stopping. One end of the limiting groove is closed by the limiting portion to form a limiting relationship with the protrusion axially. The second stopping and cooperating portion and the first stopping and cooperating portion are inserted and engaged with each other for circumferential stopping.

[0018] In a possible implementation, the screen window further includes a rope connecting member, the wire rope is connected to the moving part through the rope connecting member, and the rope connecting member is detachably connected to the end of the moving part.

[0019] In a possible implementation, it further includes a mounting member for mounting a wire wheel. The mounting member is provided with a mounting groove for accommodating the wire wheel, and the mounting member is provided with a limiting protrusion extending into the mounting groove to prevent the wire wheel from falling out of the mounting groove.

[0020] In a possible implementation, the screen window further includes a window frame. The window frame includes a first frame edge and a second frame edge perpendicular to the first frame edge. The reel is rotatably arranged within the first frame edge. The screen mesh passes through a slit provided on the first frame edge, and the free end of the screen mesh is connected to a moving part parallel to the first frame edge. The moving part is slidably engaged with the second frame edge. The wire wheel is rotatably arranged at one end of the second frame edge close to the first frame edge, and a guiding member is arranged at one end of the second frame edge far from the first frame edge. The wire rope is wound around the guiding member and then connected to the moving part after being deflected;

[0021] A chain track mechanism is provided between the first frame edge and the moving part. One end of the chain track mechanism is connected to the first frame edge, and the other end of the chain track mechanism penetrates into the inner cavity of the moving part. One end of the moving part into which the chain track mechanism penetrates is connected with a traction rope. One end of the traction rope is wound around a first guiding member arranged within the moving part and then connected to a first connection point, and the other end is connected to a second connection point. The first connection point and the second connection point are arranged at both ends of the second frame edge.

[0022] Compared with the prior art, the present utility model has the following beneficial effects:

[0023] For the screen window of the present utility model, through the cooperation of the wire wheel and the wire rope with the spring assembly, a linkage structure can be formed with the moving part connected to the screen mesh, making it easier and more convenient to pull out or pull back the screen mesh through the moving part. And through the setting that one end of the spring assembly is circumferentially stopped with the reel and the other end is freely rotatable with the drum, a certain tension can be provided when the screen mesh is pulled out and moved back and forth, making the screen mesh more stable.

[0024] Moreover, through the structure that the wire winding member and the spring assembly are movably separable, it is convenient to adjust the tightening degree of the wire rope and the tension degree of the screen mesh, and it is also convenient for disassembly and assembly, improving the practicability. And it can be simultaneously combined with the chain track mechanism and the traction mechanism of the trackless screen window, making the operation of pulling open and pulling back the screen mesh more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional structure schematic diagram of a screen window;

[0026] Figure 2 It is a three-dimensional view of a screen window when hiding the top cover of the second frame edge from a first perspective;

[0027] Figure 3 Is a three-dimensional view of a window screen when hiding the top cover of the second frame edge from the second perspective;

[0028] Figure 4 Is a cross-sectional view of the connection structure of the screen winding assembly, wire winding member and window frame of a window screen in the use state;

[0029] Figure 5 Is an exploded view of the screen winding assembly and wire winding member of a window screen;

[0030] Figure 6 Is a schematic diagram of the linkage principle of the screen winding assembly, wire winding member, wire rope and guide of a window screen;

[0031] Figure 7 Is a partial cross-sectional view of the connection structure of the screen winding assembly, wire winding member and window frame of a window screen in the adjusted state;

[0032] Figure 8 Is a schematic diagram of the wire winding structure of the chain track mechanism and the towing rope of a window screen;

[0033] Figure 9 Is a schematic diagram of the connection structure of the wire wheel of a window screen driving the spring assembly through a gear structure;

[0034] Figure 10 Is a schematic diagram of the principle of driving and separating the wire wheel and the spring assembly of a window screen through a simple structure;

[0035] Figure 11 Is an exploded view of the wire wheel of a window screen.

[0036] In the figure: 1 - window frame; 11 - first frame edge; 12 - second frame edge; 13 - installation groove; 14 - wire groove; 15 - limiting projection; 2 - moving part; 21 - moving pull rod; 3 - wire wheel; 31 - through hole; 32 - limiting groove; 33 - engaging part one; 331 - connecting channel; 332 - stopping and mating part one; 333 - limiting part; 334 - embedding hole; 34 - engaging part two; 341 - stopping and mating part two; 342 - limiting plate; 343 - embedding convex shaft; 4 - transmission member; 41 - cylindrical part; 42 - projection; 43 - handle part; 44 - through hole; 45 - first gear; 46 - second gear; 47 - compression spring; 48 - connecting component; 49 - positioning part; 5 - wire rope; 6 - guide; 7 - rotating part; 8 - winding drum; 9 - spring assembly; 91 - second end connecting part; 911 - adjusting part; 92 - return spring; 93 - first end connecting part; 10 - screen; 100 - rope connecting part; 110 - chain track mechanism; 120 - towing rope; 130 - first connection point; 140 - second connection point; 150 - second guide; 160 - first guide; 170 - adjusting tool. Detailed implementation manners

[0037] In order to enable those skilled in the art to better understand the technical solutions of the present utility model, the present utility model will be further described in detail below in conjunction with the specific implementation manners.

[0038] Please refer to Figures 1-7 As shown, an embodiment of the present application provides a window screen, including a winding drum 8, a screen mesh 10, a spring assembly 9, a wire wheel 3, a wire rope 5 and a moving part 2; the screen mesh 10 is wound and stored on the winding drum 8, the free end of the screen mesh 10 is connected to the moving part 2, the spring assembly 9 is disposed through the winding drum 8, the first end of the spring assembly 9 is axially stopped with the winding drum 8 in the circumferential direction, the second end of the spring assembly 9 is rotatable relative to the winding drum 8 to elastically deform the spring assembly 9, the wire wheel 3 is associated with the second end of the spring assembly 9 to be linked with the second end of the spring assembly 9, one end of the wire rope 5 is wound and connected to the wire wheel 3, and the other end is connected to the moving part 2.

[0039] Among them, the screen mesh 10 is wound on the winding drum 8, the free end of the screen mesh 10 is connected to the moving part 2, and the spring assembly 9 with its first end axially stopped with the winding drum 8 in the circumferential direction is disposed inside the winding drum 8. In this way, when the screen mesh 10 is pulled by the moving part 2, the winding drum 8 can unwind, and the second end follows under the driving force of the elastic force of the spring assembly 9. The rotation amplitude of the second end of the spring assembly 9 is not synchronized with that of the winding drum 8 and is linked with the wire wheel 3. In this way, when the wire wheel 3 rotates, the wire rope 5 can be wound. Correspondingly, when the screen mesh is pulled back by the moving part 2, the moving part 2 pulls the wire rope 5 and drives the wire wheel 3 to rotate and unwind. Since the wire wheel 3 is linked with the second end of the spring assembly 9, the spring assembly 9 can be rotated in the reverse direction to drive the winding drum 8 to rotate and wind the screen mesh 10. The spring assembly 9 can provide a straightening tension for the screen mesh when it is pulled back or drawn back, so as to form a linkage structure in which the screen mesh 10 can be stably wound and unwound based on the action of the moving part 2, and the force relationship of this linkage structure is basically balanced, and there will be no problem that the tension is too large when the traditional spring reel winding method gradually pulls out the screen mesh 10, which is not conducive to use. Since one end of the spring assembly 9 is axially stopped with the winding drum 8 in the circumferential direction and the other end is rotationally matched with the winding drum 8, when the screen mesh 10 is gradually pulled out of the winding drum 8 and the diameter of the screen mesh 10 on the winding drum 8 becomes smaller, resulting in a mismatch between the winding and unwinding lengths of the screen mesh 10 and the wire rope, the deformation of the spring assembly 9 can be used for compensation, and a certain tension can be provided to keep the screen mesh 10 taut. When the screen mesh 10 is pulled back, the wire rope 5 can drive the spring assembly 9 to wind the screen mesh 10 and at the same time provide tension for the screen mesh 10, so that the screen mesh 10 can maintain a certain tension when it is pulled out and pulled back and can be stably wound and unwound.

[0040] As Figure 4As shown, a direct fixed connection may be provided between the wire reel 3 and the second end of the spring assembly 9, so that the wire reel 3 and the second end of the spring assembly 9 rotate synchronously. Specifically, the wire reel 3 and the second end of the spring assembly 9 may be connected by screws, which has a simple structure and is easy to implement. Moreover, the spring assembly 9 has a certain preset elastic deformation, thereby forming a force for tensioning the wire mesh 10. More specifically, the wire reel 3 and the winding drum 8 share the same rotation axis, and the wire reel 3 is in the extending direction of the end of the winding drum 8, with a compact structure and easy assembly. The winding direction of the wire mesh 10 on the winding drum 8 is opposite to the winding direction of the wire rope 5 on the wire reel 3. For example, if the wire mesh 10 is wound clockwise on the winding drum 8, then the wire rope 5 is wound counterclockwise on the wire reel 3. During the process of the moving part 2 moving to release or retract the wire mesh 10 from the winding drum 8, the winding drum 8 and the wire reel 3 rotate in the same direction as a whole, so as to achieve "when the moving part 2 moves forward, the wire mesh 10 is released from the winding drum 8 and the wire reel 3 winds and retracts the wire rope 5; when the moving part 2 moves backward, the winding drum 8 winds and retracts the wire mesh 10 and the wire rope 5 is released from the wire reel 3". And the wire mesh 10 wound on the winding drum 8 has a diameter that gradually increases when the wire mesh 10 is wound back onto the winding drum 8 and gradually decreases when the wire mesh 10 is released from the winding drum 8. Thus, the length of the wire mesh 10 retracted or released by the winding drum 8 in one rotation changes with the winding degree of the wire mesh 10 on the winding drum 8. As a result, the length of the wire mesh 10 retracted or released by the winding drum 8 in one rotation is inconsistent with the length of the wire rope 5 released or retracted by the wire reel 3 in one rotation. Therefore, the elastic deformation of the spring assembly 9 needs to be used for dynamic compensation. For example, when the winding drum 8 rotates counterclockwise one week, the length of the wire mesh 10 retracted is L1, and when the wire reel 3 rotates counterclockwise one week, the length of the wire rope 5 released is L2, and L1 > L2, then the wire reel 3 needs to rotate more counterclockwise relative to the winding drum 8 to release the wire rope 5 with a length of L2, that is, the second end of the spring assembly 9 will rotate counterclockwise relative to the winding drum 8 to cause the spring assembly 9 to undergo elastic deformation for length compensation. The length compensated by the elastic deformation of the spring assembly 9 is D, and D = L1 - L2.

[0041] Through the above technical solution, the wire reel 3 and the wire rope 5 cooperate with the spring assembly 9 to form a linkage structure with the moving part 2 connected to the wire mesh 10, making it easier and more convenient to pull out or pull back the wire mesh 10 through the moving part 2. Moreover, through the setting that one end of the spring assembly 9 is circumferentially fixed to the reel and the other end is freely rotatable with respect to the winding drum 8, a certain tension can be provided when the wire mesh 10 is pulled out and back, making the wire mesh 10 more stable.

[0042] In one embodiment, to facilitate the adjustment of the spring assembly 9 during installation or use to adjust the pre-tension force on the screen 10, the wire wheel 3 is detachably drivingly connected to the second end of the spring assembly 9. When the wire wheel 3 is drivingly connected to the second end of the spring assembly 9, the wire wheel 3 is driven to rotate by the second end of the spring assembly 9. When the wire wheel 3 is separated from the second end of the spring assembly 9, the wire wheel 3 and the second end of the spring assembly 9 rotate independently of each other.

[0043] In this way, when the wire wheel 3 is separated from the second end of the spring assembly 9, the wire wheel 3 can be rotated to tighten the wire rope 5, and then the wire wheel 3 is kept in the current state. Under the pulling action of the wire rope 5 and the screen 10, the reel 8 will remain relatively stable or stationary. Furthermore, the second end of the spring assembly 9 can be rotated to cause elastic deformation of the spring assembly 9, thereby adjusting the tension force that the spring assembly 9 can exert. When the spring assembly 9 is deformed to a preset degree, the wire wheel 3 is connected to the second end of the spring assembly 9. Thus, the reel 8, the screen 10, the spring assembly 9, the wire wheel 3, the wire rope 5, and the moving part 2 form a closed loop. The spring assembly 9 exerts a tension force to keep the screen 10 and the wire rope 5 in a tensioned state, preventing the screen 10 from being in a loose state and being easily wrinkled or disengaged due to external forces, wind, etc. And when maintenance is required, the elastic force of the spring assembly 9 can be removed by separating the wire wheel 3 from the second end of the spring assembly 9, which is convenient for disassembly and has high safety.

[0044] When the wire wheel 3 is drivingly connected to the second end of the spring assembly 9, the spring assembly 9 and the wire wheel 3 can drive each other to respectively achieve the wire winding when the screen 10 is pulled open and the winding when the screen 10 is pulled back. When they are separated, there is no driving relationship between the wire wheel 3 and the second end of the spring assembly 9. In this way, the tension degree of the wire rope 5 wound around the wire wheel 3 can be adjusted by rotating the wire wheel 3, and it is also convenient to adjust the winding force of the second end of the separated spring assembly 9 on the screen 10 by some adjusting tools, thereby making the tension degree of the screen 10 adjustable.

[0045] In the specific implementation process, the wire wheel 3 can be separated from the second end of the spring assembly 9 for adjustment during the assembly or installation of the window screen, or it can also be separated and adjusted during use, without any limitation.

[0046] It can be understood that the detachably driving connection between the wire wheel 3 and the second end of the spring assembly 9 can be achieved by directly connecting with a fastener and being able to rotate and drive, and separated by removing the fastener. After separation, the wire wheel 3 is adjusted. It can also be that the second end of the spring assembly 9 drives the wire wheel 3 through a transmission method such as multiple gears meshing, and the wire wheel 3 is adjusted in a separated state after disassembly, or other transmission structures that can achieve separation and drive are used, without any limitation. For example, in combination with Figure 9As shown, a first gear 45 can be installed on the online pulley 3 through a connecting shaft, and a second gear 46 or a toothed ring can be provided at the second end of the spring assembly 9. Taking the second gear 46 as an example, when the first gear 45 meshes with the second gear 46, transmission can be achieved. Correspondingly, the winding direction of the wire rope 5 of the pulley 3 is the same as the winding direction of the screen 10 on the reel 8. In this way, the wire can be wound while the screen 10 is pulled open, and the wire can be released while the screen 10 is pulled back.

[0047] Similarly, in order to achieve that when the screen 10 is released from the reel 8, the pulley 3 winds and retracts the wire rope 5, and when the reel 8 winds and retracts the screen, the wire rope 5 is released from the pulley, it can be achieved by combining methods such as changing the winding direction of the wire rope 5 on the pulley 33 and setting a guide member between the pulley 3 and the moving part 2 for turning. For example, the winding direction of the wire rope 5 on the pulley 3 is opposite to the winding direction of the screen 10 on the reel 8, and the wire rope 5 is wound around multiple guide members and connected to the moving part 2. In this way, it can also be achieved that when the screen 10 is released from the reel 8, the pulley 3 winds and retracts the wire rope 5, and when the reel 8 winds and retracts the screen 10, the wire rope 5 is released from the pulley 3. Thus, it can be seen that to achieve this linkage effect, multiple different implementation methods can be generated through different combinations.

[0048] Combined with Figures 2-5 and Figure 7 As shown, in the embodiment of the present application, a transmission member 4 can also be included. The transmission member 4 is movably arranged on the pulley 3 to switch between a transmission position and a separation position; when the transmission member 4 is in the transmission position, the transmission member 4 is connected between the pulley 3 and the second end of the spring assembly 9 for transmission, and when the transmission member 4 is in the separation position, the transmission member 4 is separated from the second end of the spring assembly 9 to disconnect the transmission.

[0049] In this way, the transmission member 4 arranged on the pulley 3 can facilitate the transmission and separation between the transmission member 4 and the spring assembly 9. The transmission member can be switched between the transmission position and the separation position. When in the transmission position, the transmission member 4 is connected between the pulley 3 and the second end of the spring assembly 9 and forms a rotational transmission relationship. When switched to the separation position through movement, the transmission member 4 is separated from the second end of the spring assembly 9 and the transmission relationship is released. At this time, the pulley 3 can be independently rotated to adjust the winding force of the pulley 3 on the wire rope 5 and the tension between the spring assembly 9 and the screen 10.

[0050] For the sake of illustration, such as Figure 10As shown, in a brief implementation structure, a connection hole is provided on the wire reel, and a connection member 48 with a positioning hole is provided at the end of the spring assembly 9. The connection hole is connected to the positioning hole by using a fastener as a positioning member 49, so that circumferential stopping can be achieved after connection. In the use state, the spring assembly 9 can be in transmission linkage with the wire reel 3. In the separated state, that is, the wire reel 3 is separated from the connection member 48 by disassembling the fastener. At this time, it is convenient to rotate the wire reel 3 to adjust the tension of the wire rope 5. At the same time, the adjusting tool 170 passes through the through hole 31 in the middle of the wire reel 3 and is in circumferential stopping cooperation with the connection hole at the top of the connection member 48. In this way, the spring assembly 9 can be rotated by the adjusting tool 170 to adjust the tension of the screen 10.

[0051] In a preferred implementation manner of the transmission member 4, the transmission member 4 includes a cylindrical member 41. The cylindrical member 41 is slidably arranged in the through hole 31 in the middle of the wire reel 3 along the rotation axis of the wire reel 3, and the cylindrical member 41 is circumferentially stopped relative to the wire reel 3.

[0052] The cylindrical member 41 is slidably installed through the through hole 31 of the wire reel 3, which facilitates its switching between the transmission position and the separated position by sliding. And by the circumferential stopping of the cylindrical member 41 relative to the wire reel 3, it is convenient to drive through the cylindrical member 41 or rotate the wire reel 3 by the cylindrical member 41.

[0053] In this way, when the cylindrical member 41 is switched to the transmission position by sliding, the cylindrical member 41 is sleeved on the second end of the spring assembly 9 and is circumferentially stopped with the second end of the spring assembly 9. When the cylindrical member 41 is switched to the separated position by sliding, the cylindrical member 41 is separated from the second end of the spring assembly 9. The second end of the spring assembly 9 is provided with an adjusting portion 911 for cooperating with an adjusting member passing through the cylindrical member 41 to rotate the spring assembly 9.

[0054] Combined with Figure 7 As shown, when the cylindrical member 41 is switched to the separated position, the through hole 44 on the inner side of the cylindrical member 41 facilitates the passing through of an adjusting tool such as one with a hexagonal head. After passing through, it can form a circumferential limiting cooperation with a hexagonal groove on the second end of the spring assembly 9, so as to facilitate the rotation of the spring assembly 9 by the adjusting tool and realize the adjustment of the winding degree of the spring assembly 9 and the screen 10, so as to adjust the tension of the screen 10.

[0055] In other implementation manners, please continue to combine Figure 9As shown in the figure, on the basis of providing a transmission member 4, the first gear 45 and the second gear 46 can be used for transmission. Through the axial sliding of the transmission member 4, the separation of the first gear 45 and the second gear 46 can be realized flexibly, so as to adjust the tension degree of the wire rope wound on the wire wheel 3. In addition, a compression spring 47 can be arranged between the through hole of the wire wheel 3 and the transmission member 4. The spring can facilitate automatic reset after adjustment, making the operation more convenient and fast.

[0056] In some specific embodiments, the circumferential stopping cooperation structure between the cylindrical member 41 and the wire wheel 3 can be that the outer wall of the cylindrical member 41 and the through hole 31 of the wire wheel 3 are non-circular and cooperate with each other for circumferential stopping. Or, a protrusion 42 is arranged on the outer wall of the cylindrical member 41, and a limiting groove 32 along the rotation axis direction that cooperates with the protrusion 42 is arranged on the inner wall of the through hole 31 for circumferential stopping. Specifically, it can be selected and configured according to actual usage requirements, and there is no limitation.

[0057] Similarly, the inner wall of the cylindrical member 41 and the outer wall of the second end of the spring assembly 9 are non-circular and cooperate with each other for circumferential stopping. The outer wall of the cylindrical member 41 and the through hole 31 of the wire wheel 3 can realize circumferential stopping through the non-circular cooperation structure, so that transmission can be carried out, and it is also convenient to be axially slid and engaged together.

[0058] Specifically, the non-circular structure can be a polygon or other stopping structures that are irregular and can form a circumferential limiting relationship, and there is no limitation.

[0059] Preferably, as shown in Figure 11 the figure, the wire wheel 3 includes a first engaging member 33 and a second engaging member 34. The first engaging member 33 includes a connecting channel 331 and a first stopping and cooperating portion 332. A limiting portion 333 extending radially inward is arranged at one end of the connecting channel 331. The second engaging member 34 includes a second stopping and cooperating portion 341 and a plurality of limiting plates 342 extending into the connecting channel 331 and distributed circumferentially. The limiting plates 342 and the inner wall of the connecting channel 331 form a limiting groove 32 distributed axially (as shown in Figure 7As shown in the figure, the limiting groove 32 is in sliding fit with the protrusion 42 on the transmission member 4 for circumferential stopping. One end of the limiting groove 32 is closed by the limiting portion 333 to form a limiting relationship with the protrusion 42 in the axial direction. The second stopping and fitting portion 341 and the first stopping and fitting portion 332 are in inserted and fitted with each other for circumferential stopping. When the first engaging member 33 and the second engaging member 34 are clamped together, a wire wheel 3 with a through hole 31 can be formed, and a limiting groove 32 that can be in sliding fit with the protrusion 42 at the end of the cylindrical member 41 and is circumferentially stopped can be formed. Moreover, the limiting portion 333 can be in limiting fit with the protrusion 42 in the axial direction, so that the cylindrical member 41 can be prevented from coming off. Specifically, the first engaging member 33 and the second engaging member 34 can be respectively provided with an engaging convex shaft 343 and an engaging hole 334. By engaging the engaging convex shaft 343 in the engaging hole 334, the structure formed by splicing the first engaging member 33 and the second engaging member 34 can be made more firm and stable.

[0060] In order to facilitate rotating the wire wheel 3 or the spring assembly 9 through the cylindrical member 41, the transmission member 4 further includes a handle portion 43 provided on the cylindrical member 41. The handle portion 43 can facilitate rotating the cylindrical member 41 and make the rotation more convenient.

[0061] In the specific implementation process, the spring assembly 9 includes a retractable spring 92, and a first end connecting member 93 and a second end connecting member 91 respectively fixed at both ends of the retractable spring 92. The first end connecting member 93 is circumferentially stopped with the first end of the spring assembly 9. The second end connecting member 91 can form a rotatable assembly relationship with the winding drum 8 through a rotating member 7. The first end connecting member 93 and the second end connecting member 91 can be respectively connected to the spring assembly 9 and the winding drum 8, which is conducive to the elastic deformation of the retractable spring 92.

[0062] Specifically, in combination with Figure 5 As shown in the figure, the rotating member 7 is snapped into the end of the winding drum 8. The inner wall of the winding drum 8 is provided with a card slot, and the outer surface of the rotating member 7 is provided with a protrusion that cooperates with the card slot. The rotating member 7 is circumferentially stopped relative to the winding drum 8. The inner side of the rotating member 7 is a smooth circumference, and the inner wall of the rotating member 7 is in rotational fit with the basic component of the screen window (the rotating column on the window frame), ensuring that the winding drum 8 can rotate smoothly.

[0063] In order to facilitate the connection between the wire rope 5 and the moving portion 2, the screen window further includes a rope connecting member 100. The wire rope 5 is wound and connected to the moving portion 2 through the rope connecting member 100. The rope connecting member 100 is detachably connected to the end of the moving portion 2. The moving portion 2 is detachably connected to the wire rope 5 through the connecting member 100. The rope connecting member 100 can be connected to the end of the moving pull rod 21 by a snap-fit installation method. During assembly, it can facilitate the wire rope 5 to be first connected to it, then the wire winding and wiring can be carried out, and then after the rope connecting member 100 is snap-connected to the moving portion 2, the wire winding installation can be realized, which is more convenient.

[0064] In one embodiment, it may further include a mounting member for mounting the wire reel 3. The mounting member is provided with a mounting groove 13 for accommodating the wire reel 3, and the mounting member is provided with a limiting protrusion 15 extending into the mounting groove 13 to prevent the wire reel 3 from slipping out of the mounting groove 13.

[0065] In this way, the wire reel 33 can rotate relatively stably in the mounting groove 13, and to a certain extent, it is also convenient to take out. In the specific implementation process, the mounting member can be an integral member connected to the window frame 1. In addition, a wire groove 14 communicating with the mounting groove 13 is provided for the wire rope 5, so that the structural design is more reasonable and more compact.

[0066] In addition, the window screen may further include a guide member 6. The guide member 6 is provided at the end of the moving direction of the moving part 2. The wire rope 5 is deflected after passing around the guide member 6 and is connected to the moving part 2. The moving direction of the line segment between the wire winding member and the guide member 6 is opposite to the moving direction of the line segment between the guide member 6 and the moving part 2, and the winding direction of the wire rope on the wire reel 33 is opposite to the winding direction of the screen mesh on the winding drum 8. By such a wire winding method, when the moving part 2 pulls open the screen mesh 10, the wire rope 5 can be wound by the wire reel 3. When the screen mesh 10 is pulled back, the moving part 2 can drive the wire reel 3 to rotate and unwind the wire through the wire rope 5, and at the same time drive the winding drum 8 to rotate to wind up the screen mesh 10.

[0067] Specifically, the guide member 6 is a rotatably arranged guide wheel, and one or more of them can be provided without limitation.

[0068] To further illustrate the embodiments of the present application, a window screen with a trackless planar screen mesh 10 having a chain track mechanism 110 is used as an application scenario for illustration. Please refer to Figure 1 and Figure 8As shown, the screen window may further include a window frame 1. The window frame 1 includes a first frame edge 11 and a second frame edge 12 perpendicular to the first frame edge 11. A reel 8 is rotatably arranged within the first frame edge 11. The screen mesh 10 passes through a slit provided on the first frame edge 11. The free end of the screen mesh 10 is connected to a moving part 2 parallel to the first frame edge 11. The moving part 2 is slidably engaged with the second frame edge 12. A wire wheel 3 is rotatably arranged at one end of the second frame edge 12 close to the first frame edge 11. A guide member 6 is arranged at one end of the second frame edge 12 far from the first frame edge 11. A wire rope 5 is wound around the guide member 6 and then connected to the moving part 2 after changing direction. A chain track mechanism 110 is provided between the first frame edge 11 and the moving part 2. One end of the chain track mechanism 110 is connected to the first frame edge 11, and the other end of the chain track mechanism 110 penetrates into the inner cavity of the moving part 2. One end of the moving part 2 into which the chain track mechanism 110 penetrates is connected with a traction rope 120. One end of the traction rope 120 is wound around a first guide member 160 arranged within the moving part 2 and then connected to a first connection point 130, and the other end is connected to a second connection point 140. The first connection point 130 and the second connection point 140 are arranged at both ends of the second frame edge 12.

[0069] The moving part 2 is a moving pull rod 21 having an inner cavity. The traction rope 120 is movably engaged with the chain track mechanism 110, and the traction rope 120 is tightly connected between the first connection point 130 and the second connection point 140. When the moving pull rod 21 moves, the chain track mechanism 110 contracts into the moving pull rod 21 or extends out of the moving pull rod 21. The traction rope 120 gives a pulling force to the chain track, making the movement of the chain track stable. At the same time, the chain track mechanism 110 can act as a guide rail to guide the back-and-forth movement of the moving pull rod 21. And because the traction rope 120 is tightly arranged, under the action of the traction rope 120, the moving pull rod 21 can be easily hovered. By simultaneously cooperating with the chain track mechanism 110 and the traction mechanism of the trackless screen window, the volume of the screen window can be made smaller, which is convenient for transportation, and the operation of pulling open and pulling back the screen mesh 10 is also more convenient.

[0070] As Figure 1As shown, the window screen as a whole only has two frame borders in the general sense, namely the first frame edge 11 and the second frame edge 12. The first frame edge 11 and the second frame edge 12 form an L-shaped structure. A guide groove for the side edge of the screen mesh 10 to be snapped into is provided on the second frame edge 12. During the process of retracting and extending the screen mesh 10, the edge of the screen mesh 10 passes along the guide groove. When the screen mesh 10 is released from the reel 8 to be unfolded, the edge of the screen mesh 10 is snapped into the guide groove to keep the screen mesh 10 in a flat state, and then a shielding and protection effect is stably formed. The second frame edge 12 can only limit one side edge of the screen mesh 10, while the other side edge of the screen mesh 10 can be snapped and limited by a chain track mechanism. The chain track mechanism is arranged between the first frame edge 11 and the moving part 2. When the screen mesh 10 is unfolded, the first frame edge 11, the second frame edge 12, the moving part 2 and the chain track mechanism enclose a closed ring, and the four sides of the screen mesh 10 are effectively limited, so as to stably form a shield.

[0071] In a specific embodiment, the moving part 2 has a cavity inside to accommodate the chain track mechanism 110. When the screen mesh 10 is completely wound and retracted on the reel 8, the moving part 2 abuts against the first frame edge 11, and the chain track mechanism 110 is received in the cavity of the moving part 2. When the screen mesh 10 is released from the reel 8, the chain track mechanism 110 is also released from the cavity of the moving part 2. A guide groove for the edge of the screen mesh 10 to be snapped into is provided on the chain track mechanism 110. During the process of releasing the screen mesh 10, the edge of the screen mesh 10 moves relative to the guide groove of the chain track mechanism 110 to keep the edge of the screen mesh 10 always snapped into the guide groove. More specifically, the chain track mechanism 110 includes a plurality of chain links hinged in sequence, and the chain track mechanism forms a flexible guide rail structure. The first end of the chain track mechanism 110 is connected to the first frame edge 11, and the second end of the chain track mechanism 110 penetrates into the cavity of the moving part 2 for retracting and extending. The retracting and extending of the chain track mechanism 110 can mainly rely on a traction mechanism, such as Figure 8As shown, in a specific implementation, the traction mechanism mainly includes a traction rope 120. One end of the second frame edge 12 close to the first frame edge 11 is provided with a first connection point 130, and the other end of the second frame edge 12 away from the first frame edge 11 is provided with a second connection point 140. The moving part 2 is provided with a first guide member 160 and a second guide member 150 at intervals. The second guide member 150 is close to the end where the second frame edge 12 is located, while the first guide member 160 is away from the second frame edge 12. One end of the traction rope 120 is fixedly connected to the first connection point 130. After the traction rope 120 is wound around the second guide member 150, it is then wound around the first guide member 160, and then the traction rope 120 is wound around the second guide member 150 again and extends to the second connection point 140. The other end of the traction rope 120 is fixedly connected to the second connection point 140. The traction rope is wound into an annular section between the first guide member 160 and the second guide member 150. The second end of the track chain mechanism 110 is fixedly connected to a preset point on this annular section. When the moving part 2 moves, the entire annular section will move in a rolling form. In other words, the preset point moves along the length direction of the moving part 2, thereby driving the second end of the track chain mechanism 110 to move up and down in the cavity of the moving part 2, and further realizing the retraction and extension of the track chain mechanism 110.

[0072] Among them, the first connection point 130 and the second connection point 140 can be studs located at both ends of the second frame edge, and the two ends of the traction rope 120 are fixed by the studs. The first guide member 160 and the second guide member 150 can be guide wheels or guide posts.

[0073] The above is only the preferred implementation manner of the present invention. It should be noted that the above preferred implementation manner should not be regarded as a limitation to the present invention. The protection scope of the present invention should be subject to the scope defined by the claims. For those of ordinary skill in the art of this technology, without departing from the spirit and scope of the present invention, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A window screen, characterized in that, The invention comprises a drum, a gauze, a spring assembly, a wire wheel, a wire rope and a moving part; the gauze mesh is wound and stored on the drum, the free end of the gauze mesh is connected to the moving part, the spring assembly is inserted into the drum, the first end of the spring assembly is stopped in the circumferential direction, the second end of the spring assembly is freely rotatable relative to the drum to elastically deform the spring assembly, the wire wheel is associated with the second end of the spring assembly to be linked with the second end of the spring assembly, one end of the wire rope is wound and connected to the wire wheel, and the other end is connected to the moving part; When the moving part moves in the forward direction, the gauze is released from the reel and the line wheel winds up and retracts the line. When the moving part moves in the reverse direction, the reel winds up and retracts the gauze and the line is released from the line wheel.

2. The screen window according to claim 1, characterized in that, The wire wheel is in detachable transmission connection with the second end of the spring assembly; When the wire wheel is in transmission connection with the second end of the spring assembly, the wire wheel and the second end of the spring assembly are linked together; when the wire wheel and the second end of the spring assembly are separated, the wire wheel and the second end of the spring assembly rotate independently.

3. A window screen according to claim 1, characterized in that, It also includes a transmission member, which is movably arranged on the spool to switch between a transmission position and a separation position; When the transmission member is in the transmission position, the transmission member is connected between the spool and the second end of the spring assembly to transmit the power; when the transmission member is in the separation position, the transmission member is separated from the second end of the spring assembly to disconnect the power.

4. A window screen according to claim 3, characterized in that, The transmission member includes a cylindrical member, which is slidably arranged in a through hole in the middle of the line wheel along the rotation axis of the line wheel, and the cylindrical member is circumferentially stopped relative to the line wheel; When the cylindrical member slides and switches to the transmission position, the cylindrical member is sleeved on the second end of the spring assembly and circumferentially stopped with the second end of the spring assembly. When the cylindrical member slides and switches to the separation position, the cylindrical member is separated from the second end of the spring assembly. The second end of the spring assembly is provided with an adjusting portion, which is used to cooperate with an adjusting member passing through the cylindrical member to rotate the second end of the spring assembly.

5. A window screen according to claim 4, wherein The outer wall of the cylindrical member is non-circular and matches the through hole of the spool for circumferential stopping, or the outer wall of the cylindrical member is provided with a protrusion, and the inner wall of the through hole is provided with a limiting groove along the rotation axis that matches the protrusion for circumferential stopping; the inner wall of the cylindrical member is non-circular and matches the outer wall of the second end of the spring assembly for circumferential stopping.

6. The screen window according to claim 4, wherein The transmission component further includes a handle portion provided on the cylindrical member.

7. A window screen according to claim 4, characterized in that, The reel includes a first engaging part and a second engaging part, the first engaging part includes a connecting channel and a first stop fitting part, one end of the connecting channel is provided with a limiting part extending radially inward; the second engaging part includes a second stop fitting part and a plurality of limiting plates extending into the connecting channel and distributed circumferentially, the limiting plates and the inner wall of the connecting channel form a limiting groove distributed along the axial direction, the limiting groove and the protrusion on the transmission component are slidably matched to achieve circumferential stopping, one end of the limiting groove is closed by the limiting part to form a limiting relationship with the protrusion in the axial direction, and the second stop fitting part is inserted and matched with the first stop fitting part for circumferential stopping.

8. A window screen according to claim 1, characterized in that, The screen window further comprises a rope connecting piece, the rope is passed through the rope connecting piece and connected to the moving part, and the rope connecting piece is detachably connected to the end of the moving part.

9. A screen window according to claim 1, characterized in that, It also includes an installation component for installing the wire wheel. The installation component is provided with an installation groove for accommodating the wire wheel. The installation component is provided with a limiting protrusion extending into the installation groove to prevent the wire wheel from escaping from the installation groove.

10. A screen window according to any one of claims 1-9, characterized in that, The screen window also includes a window frame, the window frame includes a first frame side and a second frame side perpendicular to the first frame side, the reel is rotatably arranged in the first frame side, the gauze passes through a slit arranged on the first frame side, the free end of the gauze is connected to a movable part parallel to the first frame side, the movable part is slidably matched with the second frame side, the wire wheel is rotatably arranged on one end of the second frame side close to the first frame side, the guide is arranged on one end of the second frame side away from the first frame side, and the wire rope is wound around the guide member and then connected to the movable part after changing direction; A chain track mechanism is provided between the first frame edge and the moving part, one end of the chain track mechanism is connected to the first frame edge, and the other end of the chain track mechanism penetrates into the inner cavity of the moving part, and one end of the moving part penetrated by the chain track mechanism is connected to a traction rope, one end of the traction rope is connected to the first connection point after passing through the first guide member provided in the moving part, and the other end is connected to the second connection point. The first connection point and the second connection point are provided at both ends of the second frame edge.

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