A mosquito net stand

Abstract

The application relates to a mosquito net frame and belongs to the technical field of household equipment. The mosquito net frame comprises a lifting mechanism, an expansion mechanism and a mounting rod; the expansion mechanism is hung below the lifting mechanism; the expansion mechanism is connected with the mounting rod around; the lifting mechanism comprises a fixing box, a lifting motor, a brake speed reducer, a lifting rotating shaft, a limiting turntable and a bearing rope; the lifting rotating shaft is arranged in the fixing box through a bearing seat; the two ends of the lifting rotating shaft are respectively provided with the limiting turntables; the limiting turntables are arranged with the bearing rope in a winding mode; one end of the bearing rope is fixedly connected with the limiting turntable. The mosquito net frame is compact in structure, ingenious in design, can mechanically complete splicing and recycling, solves the problems of low assembly efficiency and high labor intensity during manual assembly of the existing mosquito net frame, and is particularly suitable for the needs of household use.

Description

Technical Field

[0001] This invention relates to a mosquito net frame, belonging to the field of household equipment technology. Background Technology

[0002] In summer, people often use mosquito nets to keep mosquitoes away from their beds. Currently, mosquito nets are set up by first manually assembling the net frame and then hanging the net on the frame. Because the net frame is entirely assembled manually, and the net needs to be disassembled and recycled manually after the seasonal mosquito season, there are complex issues with disassembly and recycling, which cannot meet people's daily needs. Therefore, it is necessary to develop a new mosquito net frame to solve the problems of low assembly efficiency and high labor intensity caused by the manual assembly and disassembly of existing nets. Summary of the Invention

[0003] The purpose of this invention is to provide a mosquito net frame with a compact structure and ingenious design, which solves the problems of low assembly efficiency and high labor intensity of existing mosquito net frames.

[0004] The technical solution of this invention is:

[0005] A mosquito net frame includes a lifting mechanism, an extension mechanism, and hanging rods; characterized in that: an extension mechanism is suspended below the lifting mechanism; hanging rods are connected around the extension mechanism; the lifting mechanism includes a fixed box, a lifting motor, a brake reducer, a lifting shaft, a limiting turntable, and a carrying rope; the lifting shaft is mounted in the fixed box via a bearing seat; limiting turntables are respectively mounted at both ends of the lifting shaft; the carrying rope is wound around the limiting turntable; one end of the carrying rope is fixedly connected to the limiting turntable; the other end of the carrying rope passes through the fixed box and is connected to the extension mechanism; a brake reducer is mounted in the fixed box on one side of the middle of the lifting shaft via the lifting motor; the brake reducer is connected to the lifting shaft via a transmission pair.

[0006] The mounting rod includes a main mounting rod and a secondary mounting rod; the main mounting rod has a hollow tubular structure; secondary mounting rods are inserted into both sides of the main mounting rod; and multiple mounting holes are provided at the lower part of both the main mounting rod and the secondary mounting rod.

[0007] The expansion mechanism includes an assembly box and expansion units; four sets of expansion units are symmetrically arranged inside the assembly box; the four sets of expansion units are interconnected; one side of each expansion unit extends to the rear of the assembly box and connects to a mounting rod; each expansion unit includes a take-up shaft, an unwind shaft, a guide tube, a take-up reel, a rack section, and an end rack; the take-up shaft is mounted inside the assembly box via a bearing seat; take-up reels are symmetrically mounted on the take-up shaft; a guide tube is mounted on the assembly box on one side of the take-up reel; an end rack is slidably mounted inside the guide tube; one end of the end rack extends to the rear of the assembly box and connects to a mounting rod; the other end of the end rack is sequentially hinged... The unit is connected to multiple rack sections; one end of each rack section is wound multiple times on the take-up reel and then fixedly connected thereto; an unwinding shaft is mounted on the assembly box below the guide tube via a bearing seat; two sets of unwinding gears are symmetrically fixed on the unwinding shaft; the unwinding gears pass through the corresponding guide tubes and mesh with the end racks inside them; the ends of the take-up shafts of the four extension units are interconnected by helical gear pairs, and one end of the take-up shaft is connected to the take-up motor; the ends of the unwinding shafts of the four extension units are interconnected by helical gear pairs, and one end of the unwinding shaft is connected to the unwinding motor.

[0008] The guide tube is provided with guide arc plates at the upper and lower parts of one end.

[0009] The expansion mechanism includes an assembly box, an upper guide sleeve, a lower guide sleeve, a telescopic rack, an expansion motor, an upper expansion gear, and a lower expansion gear. The upper and lower expansion gears are mounted vertically on the middle of the assembly box via the expansion motor. Two sets of upper guide sleeves are symmetrically mounted on the assembly box on both sides of the upper expansion gear. A telescopic rack is slidably mounted inside the upper guide sleeve. The upper expansion gear extends into the upper guide sleeve and meshes with the telescopic rack. Two sets of lower guide sleeves are symmetrically mounted on the assembly box on both sides of the lower expansion gear. The lower guide sleeve and the upper guide sleeve are arranged in a cross shape. A telescopic rack is slidably mounted inside the lower guide sleeve. The lower expansion gear extends into the lower guide sleeve and meshes with the telescopic rack. The telescopic rack extends to the outside of the assembly box and connects to the mounting rod.

[0010] The extended mechanism includes an assembly box, a telescopic scissor lift, a control cylinder, and a control board; multiple sets of telescopic scissor lifts are symmetrically arranged inside the assembly box; the upper hinge point of one end of the telescopic scissor lift is connected to the top of the assembly box; the control board is mounted in the center of the assembly box through the control cylinder; the control board is hinged to the lower hinge point of one end of the telescopic scissor lift; the telescopic scissor lift extends to the outside of the assembly box and is connected to the mounting rod.

[0011] The expansion mechanism includes an assembly box and an expander; the expander is symmetrically installed inside the assembly box; the expander includes an expansion box, an outer expansion rack, an inner expansion rack, and a control gear; the expansion box is fixedly installed inside the assembly box; the outer expansion rack is slidably installed inside the expansion box; multiple inner expansion racks are slidably installed sequentially inside the expansion box on one side of the outer expansion rack; one end of the outermost inner expansion rack is fixedly connected to the expansion box; a control gear is mounted on the assembly box below one end of the inner expansion rack via a motor; the control gear extends into the expansion box and intermittently meshes with the outer and inner expansion racks; a guide rail is provided on the outer side of the inner expansion rack; a guide groove is provided on the inner side of the inner expansion rack; the inner expansion rack is slidably connected to the guide groove of the adjacent inner expansion rack via the guide rail; a guide groove is provided on the inner side of the outer expansion rack; the outer expansion rack is slidably connected to the guide rail of the corresponding inner expansion rack via the guide groove; spring plungers are installed at the upper and lower ends of the guide grooves; a connecting groove is provided at the first section of the guide rail; the spring plungers are intermittently engaged with the corresponding connecting grooves.

[0012] The advantages of this invention are:

[0013] This mosquito net frame has a compact structure and ingenious design, and can complete the splicing and recycling process by mechanization. It solves the problems of low assembly efficiency and high labor intensity that exist in the manual assembly of existing mosquito net frames, and is particularly suitable for home use. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0015] Figure 2 This is a top view of the lifting mechanism of the present invention.

[0016] Figure 3 for Figure 2 Schematic diagram of the structure in the AA direction;

[0017] Figure 4 for Figure 2 Another structural diagram of the AA direction;

[0018] Figure 5 for Figure 3 Partial structural diagram;

[0019] Figure 6 A schematic diagram of the structure of the extension mechanism of this invention;

[0020] Figure 7 for Figure 6 A schematic diagram of the structure of the middle extension unit;

[0021] Figure 8 for Figure 7 Schematic diagram of the structure in the middle BB direction;

[0022] Figure 9for Figure 8 A schematic diagram of the working state structure;

[0023] Figure 10 This is a schematic diagram of the structure of the mounting rod of the present invention;

[0024] Figure 11 For the present invention Figure 6 A schematic diagram of the working state structure of the extended mechanism in the diagram;

[0025] Figure 12 This is a schematic diagram of a modified structure of the extended mechanism of the present invention;

[0026] Figure 13 for Figure 12 Schematic diagram of the CC-axis structure;

[0027] Figure 14 for Figure 13 Schematic diagram of the structure in the DD direction;

[0028] Figure 15 This is a schematic diagram of a modified structure of the extended mechanism of the present invention;

[0029] Figure 16 for Figure 15 Schematic diagram of the structure in the DD direction;

[0030] Figure 17 for Figure 15 Schematic diagram of the structure in the middle EE direction;

[0031] Figure 18 This is a schematic diagram of a modified structure of the extended mechanism of the present invention;

[0032] Figure 19 This is a schematic diagram of the structure of the extender of the present invention;

[0033] Figure 20 for Figure 19 A schematic diagram of the expander's working state structure;

[0034] Figure 21 for Figure 20 Enlarged structural diagram at point F;

[0035] Figure 22 for Figure 21 A schematic diagram of the structure in the GG direction.

[0036] In the diagram: 1. Lifting mechanism; 2. Extension mechanism; 3. Mounting rod; 4. Fixing box; 5. Lifting shaft; 6. Limiting turntable; 7. Bearing rope; 8. Lifting motor; 9. Brake reducer; 10. Mounting main rod; 11. Mounting auxiliary rod; 12. Mounting hole; 13. Assembly box; 14. Extension unit; 15. Rewinding shaft; 16. Rewinding reel; 17. Guide tube; 18. End rack; 19. Rack section; 20. Unwinding shaft; 21. Unwinding gear; 22. Rewinding motor; 23. Unwinding motor; 24. Guide plate; 25. Extending motor; 26. Upper extending gear; 27. Lower extending gear; 28. Upper guide sleeve; 29. ​​Lower guide sleeve; 30. Telescopic rack; 31. Telescopic scissor lifter; 32. Control cylinder; 33. Control board; 34. Extender; 35. Extending box; 36. Outer extending rack; 37. Inner extending rack; 38. Guide rail; 39. Guide groove; 40. Spring plunger; 41. Control gear. Detailed Implementation

[0037] This mosquito net frame includes a lifting mechanism 1, an extension mechanism 2, and a hanging rod 3 (see the instruction manual). Figure 1 An extension mechanism 2 is provided below the lifting mechanism 1 (see the instruction manual appendix). Figure 1 ).

[0038] The lifting mechanism 1 includes a fixed box 4, a lifting motor 8, a brake reducer 9, a lifting shaft 5, a limit turntable 6, and a load-bearing rope 7 (see the instruction manual appendix). Figure 2 and 3 ).

[0039] The lifting shaft 5 is mounted inside the fixed box 4 via a bearing seat; the brake reducer 9 is mounted inside the fixed box 4 on one side of the middle part of the lifting shaft 5 via the lifting motor 8; the brake reducer 9 is an externally purchased device and has an automatic locking function. When the lifting motor 8 is not working, the brake reducer 9 will automatically lock, thereby preventing the lifting shaft 5 from easily rotating.

[0040] The brake reducer 9 is connected to the lifting shaft 5 via a transmission pair. When the lifting motor 8 is working, it can drive the lifting shaft 5 to rotate in both directions through the brake reducer 9.

[0041] Limiting turntables 6 are installed at both ends of the lifting shaft 5; the limiting turntables 6 are equipped with carrying ropes 7 by winding; one end of the carrying rope 7 is fixedly connected to the limiting turntable 6; the other end of the carrying rope 7 passes through the fixing box 4 and is connected to the extension mechanism 2. During operation, when the limiting turntable 6 rotates with the lifting shaft 5, it will lower or retract the carrying rope 7, thereby achieving the purpose of lowering or raising the extension mechanism 2.

[0042] A scissor lift is symmetrically arranged between the fixing box 4 and the expansion mechanism 2 (see the instruction manual appendix). Figure 4The upper end of the scissor fork is movably connected to the guide rail on the fixed box 4 via a guide wheel; the lower end of the scissor fork is movably connected to the guide rail on the upper surface of the extension mechanism 2 via a guide wheel; the purpose of setting the scissor fork is to enable the scissor fork to automatically extend or retract under the squeezing or stretching action of the extension mechanism 2 and the lifting mechanism 1 when the extension mechanism 2 moves up and down relative to the lifting mechanism 1; during this process, the scissor fork can guide and limit the extension mechanism 2 and the lifting mechanism 1, avoiding the problem of the extension mechanism 2 shaking relative to the lifting mechanism 1.

[0043] The extension mechanism 2 is connected to mounting rods 3 around its perimeter (see instruction manual). Figure 1 The mounting pole 3 includes the main mounting pole 10 and the auxiliary mounting pole 11 (see the instruction manual appendix). Figure 10 The main hanging pole 10 has a hollow tubular structure; secondary hanging poles 11 are inserted on both sides of the main hanging pole 10; multiple hanging holes 12 are provided at the lower part of both the main hanging pole 10 and the lower part of the secondary hanging poles 11. During operation, the secondary hanging poles 11 can be manually pulled out, and then the mosquito net can be hung on the hanging holes 12 using hooks.

[0044] The expansion mechanism 2 includes a mounting box 13 and an expansion unit 14 (see the attached instruction manual). Figure 6 Four sets of expansion units 14 are symmetrically arranged inside the assembly box 13 (see the instruction manual appendix). Figure 6 The extension unit 14 includes a take-up spool 15, an unwind spool 20, a guide tube 17, a take-up reel 16, a rack section 19, and an end rack 18 (see the attached instruction manual). Figure 7 and 8 ).

[0045] A winding shaft 15 is mounted inside the assembly box 13 via a bearing seat; winding reels 16 are symmetrically mounted on the winding shaft 15; a guide tube 17 is mounted on the assembly box 13 on one side of the winding reel 16; an end rack 18 is slidably mounted inside the guide tube 17. Under the guidance of the guide tube 17, the end rack 18 can only slide back and forth inside it.

[0046] One end of the end rack 18 extends to the assembly box 13 and is connected to the mounting rod 3; when the end rack 18 moves, it can drive the mounting rod 3 to move back and forth synchronously.

[0047] The other end of the end rack 18 is sequentially hinged to multiple rack sections 19; one end of each rack section 19 is wound multiple times on the take-up reel 16 and then fixedly connected thereto; an unwinding shaft 20 is mounted on the assembly box 13 below the guide tube 17 via a bearing seat; two sets of unwinding gears 21 are symmetrically fixed on the unwinding shaft 20; the unwinding gears 21 pass through the corresponding guide tube 17 and mesh with the end rack 18 inside it (see the instruction manual appendix). Figure 8When the unwinding gear 21 rotates, it drives the end rack 18 to extend outward; during the outward extension of the end rack 18, it drives the take-up reel 16 to rotate through the rack section 19, causing the rack section 19 to move together with the end rack 18; when the rack section 19 enters the guide tube 17 and meshes with the unwinding gear 21, the unwinding gear 21 can drive the rack section 19 to continue extending (see the instruction manual appendix). Figure 9 This allows the rack section 19 and the end rack 18 to push the mounting rod 3 outward. When the winding shaft 15 drives the winding reel 16 to reverse, the winding reel 16 can drive the rack section 19 to rewind onto the winding reel 16, thus achieving the purpose of retrieving the rack section 19 and causing the end rack 18 to drive the mounting rod 3 to retract.

[0048] Guide arc plates 24 are respectively provided on the upper and lower parts of one end of the guide tube 17 (see the instruction manual appendix). Figure 9 The purpose of setting the guide plate 24 is to ensure that the rack section 19 can smoothly enter the interior of the guide tube 17 under the guidance of the guide plate 24 during operation, thereby avoiding the problem of "jamming" between the rack section 19 and the guide tube 17.

[0049] The ends of the winding shafts 15 of the four sets of extension units 14 are interconnected by helical gear pairs, and one end of the winding shaft 15 is connected to the winding motor 22 (see the attached instruction manual). Figure 6 The ends of the unwinding shafts 20 of the four sets of expansion units 14 are interconnected by helical gear pairs, and one end of the unwinding shaft 20 is connected to the unwinding motor 23 (see the instruction manual appendix). Figure 6 When the unwinding motor 23 is working, it can drive each unwinding shaft 20 to rotate synchronously in the forward direction through the helical gear pair. When the unwinding shaft 20 is working, it can drive the rack section 19 and the end rack 18 to extend through the unwinding gear 21, thereby achieving the purpose of spreading the hanging rod 3 outward. When the winding motor 22 is working, the winding motor 22 can drive the winding shaft 15 to rotate in the reverse direction through the helical gear pair, thereby achieving the purpose of retracting the rack section 19 and causing the end rack 18 to drive the hanging rod 3 to retract.

[0050] When the mosquito net frame is in operation, if a mosquito net needs to be hung, the lifting mechanism 1 first moves the extension mechanism 2 to a suitable position. Then, the unwinding shaft 20 moves the rack section 19 and end rack 18 outwards, moving the hanging rod 3 to the appropriate position. The hanging rods 3 are then manually pulled apart to connect them, and the mosquito net can then be manually hung on them. When the mosquito net is no longer needed, it is manually retracted, and the hanging rods 3 are retracted. The winding motor 22 then moves the rack section 19 and end rack 18 back to their original positions. The lifting mechanism 1 then moves the extension mechanism 2 back to its original position, and the mosquito net frame can begin the next work cycle.

[0051] As a variation of the present invention, the extension mechanism 2 includes an assembly box 13, an upper guide sleeve 28, a lower guide sleeve 29, a telescopic rack 30, an extension motor 25, an upper extension gear 26, and a lower extension gear 27 (see the appendix to the specification). Figure 12 and 13 ).

[0052] The upper extension gear 26 and the lower extension gear 27 are mounted vertically on the middle of the assembly box 13 via the extension motor 25 (see the instruction manual appendix). Figure 13 When the extension motor 25 is activated, it can drive the upper extension gear 26 and the lower extension gear 27 to rotate synchronously.

[0053] Two sets of upper guide sleeves 28 are symmetrically mounted on the assembly boxes 13 on both sides of the upper extension gear 26; a telescopic rack 30 is slidably mounted inside the upper guide sleeve 28; the upper extension gear 26 extends into the upper guide sleeve 28 and meshes with the telescopic rack 30 (see the instruction manual appendix). Figure 12 When the upper extension gear 26 rotates, it can drive the telescopic rack 30 to slide back and forth within the upper guide sleeve 28.

[0054] Two sets of lower guide sleeves 29 are symmetrically mounted on the assembly boxes 13 on both sides of the lower extension gear 27; the lower guide sleeves 29 and the upper guide sleeves 28 are arranged in a cross shape; a telescopic rack 30 is slidably installed inside the lower guide sleeves 29; the lower extension gear 27 extends into the lower guide sleeves 29 and meshes with the telescopic rack 30 (see the instruction manual appendix). Figure 13 and 14 When the lower extension gear 27 rotates, it can drive the telescopic rack 30 to slide back and forth within the lower guide sleeve 29.

[0055] The telescopic rack 30 extends to the outside of the assembly box 13 and connects to the hanging rod 3. When the telescopic rack 30 moves, it drives the corresponding hanging rod 3 to move synchronously. In this operation, when the extension motor 25 moves, it drives the upper extension gear 26 and the lower extension gear 27 to rotate in the forward direction, which causes the telescopic rack 30 to extend the hanging rod 3. When the hanging rod 3 extends to the appropriate position, the extension motor 25 stops moving, and then the hanging rod 3 is manually unfolded so that the hanging rods 3 overlap each other, thus completing the mosquito net hanging work. When the mosquito net is no longer needed, the mosquito net is manually retracted, and the hanging rod 3 is retracted. Then, the upper extension gear 26 and the lower extension gear 27 rotate in the opposite direction, and the telescopic rack 30 is reset.

[0056] As another variation of the present invention, the extension mechanism 2 includes an assembly box 13, a telescopic scissor lift 31, a control cylinder 32, and a control board 33 (see appendix to the specification). Figure 15 , 16(and 17). Multiple sets of telescopic scissor lifts 31 are symmetrically arranged inside the assembly box 13; the upper hinge point of one end of the telescopic scissor lift 31 is connected to the top of the assembly box 13; a control plate 33 is mounted at the center inside the assembly box 13 via a control electric cylinder 32; the control plate 33 is hinged to the lower hinge point of one end of the telescopic scissor lift 31 (see attached instruction manual). Figure 16 and 17 The telescopic scissor lift 31 extends to the outside of the assembly box 13 and connects to the mounting rod 3.

[0057] When the control cylinder 32 drives the control plate 33 to move up and down, it can drive the telescopic scissor fork 31 to extend or retract. When working in this way, the control cylinder 32 can drive the control plate 33 to move, and the telescopic scissor fork 31 can drive the hanging rod 3 to extend or move backward, thereby facilitating the installation of the mosquito net.

[0058] As a further variation and expansion mechanism 2 of the present invention, it includes an assembly box 13 and an expander 34; the expander 34 is symmetrically installed inside the assembly box 13 (see appendix to the specification). Figure 18 ).

[0059] Expander 34 includes expansion box 35, outer expansion rack 36, inner expansion rack 37, and control gear 41 (see instruction manual appendix). Figure 19 and 20 An expansion box 35 is fixedly installed inside the assembly box 13; an outer expansion rack 36 is slidably installed inside the expansion box 35; and a mounting rod 3 is connected to the outer end of the outer expansion rack 36.

[0060] Multiple internal expansion racks 37 are sequentially slidably mounted inside the expansion box 35 on one side of the external expansion rack 36 (see the instruction manual appendix). Figure 19 and 20 The outer extending rack 36 and the inner extending rack 37 can only slide back and forth within the extending box 35.

[0061] One end of the outermost inner extension rack 37 is fixedly connected to the extension box 35; a control gear 41 is mounted on the assembly box 13 below one end of the inner extension rack 37 via a motor; the control gear 41 extends into the extension box 35 and intermittently meshes with the outer extension rack 36 and the inner extension rack 37 (see the attached instruction manual). Figure 20 and 21 ).

[0062] The outer side of the inner extended rack 37 is provided with a guide rail 38; the inner side of the inner extended rack 37 is provided with a guide groove 39; the inner extended rack 37 is slidably connected to the guide groove 39 of the adjacent inner extended rack 37 through the guide rail 38; the inner side of the outer extended rack 36 is provided with a guide groove 39; the outer extended rack 36 is slidably connected to the guide rail 38 of the corresponding inner extended rack 37 through the guide groove 39 (see the appendix to the instruction manual). Figure 21 and 22The purpose of this arrangement is to ensure that the inner extended racks 37 are slidably connected to each other and to the outer extended racks 36 and the inner extended racks 37 via the guide rails 38 and the guide grooves 39.

[0063] Spring plungers 40 are installed at the upper and lower ends of the guide groove 39; the first section of the guide rail 38 is provided with a connecting groove; the spring plungers 40 are intermittently engaged with the corresponding connecting grooves (see the attached instruction manual). Figure 21 and 22 The purpose of this arrangement is as follows: During operation, the control gear 41 drives the outer extension rack 36 to move outward. When the spring plunger 40 on the outer extension rack 36 engages with the connecting groove on the corresponding inner extension rack 37, the outer extension rack 36 can maintain a fixed connection with the corresponding inner extension rack 37 through the spring plunger 40. Thus, when the outer extension rack 36 moves outward, the spring plunger 40 drives the corresponding inner extension rack 37 to move outward together. When the inner extension rack 37 moves to contact the control gear 41, the control gear 41 can drive the inner extension rack 37 to continue moving outward. As the control gear 41 continues to operate, with the cooperation of the spring plunger 40, the inner extension racks 37 are driven sequentially to the outside of the extension box 35, thereby achieving the purpose of extending each inner extension rack 37 and outer extension rack 36 outward to move the hanging rod 3 outward. After the hanging rod 3 moves to the appropriate position, it can be unfolded to achieve the purpose of hanging the mosquito net. When the mosquito net is no longer needed, it is retracted, and the mounting rod 3 is retracted. This causes the control gear 41 to reverse, causing the inner expansion racks 37 to retract inwards sequentially. When the inner expansion racks 37 are in contact with the expansion box 35 and cannot move, the spring plunger 40 will be compressed and retracted, thus releasing the fixed connection between the inner expansion racks 37. In this way, each inner expansion rack 37 can be retracted in sequence, achieving the purpose of resetting the mounting rod 3.

[0064] As a further improvement to the mosquito net frame, air conditioners, ceiling lights, mosquito killers, mosquito killers, air conditioning fans, projectors, televisions, fans and audio equipment can be installed at the lower end of the extension mechanism 2, giving it other auxiliary functions.

[0065] As another improvement to the mosquito net frame, the movement of each power component in the mosquito net frame structure can be controlled by remote control or voice control.

[0066] This mosquito net frame has a compact structure and ingenious design, and can complete the splicing and recycling process by mechanization. It solves the problems of low assembly efficiency and high labor intensity that exist in the manual assembly of existing mosquito net frames, and is particularly suitable for home use.

Claims

1. A mosquito net frame, comprising a lifting mechanism (1), an extension mechanism (2), and a hanging rod (3); characterized in that: An extension mechanism (2) is suspended below the lifting mechanism (1); a hanging rod (3) is connected around the extension mechanism (2); the lifting mechanism (1) includes a fixed box (4), a lifting motor (8), a brake reducer (9), a lifting shaft (5), a limiting turntable (6), and a carrying rope (7); the lifting shaft (5) is installed in the fixed box (4) through a bearing seat; the two ends of the lifting shaft (5) are respectively equipped with a limiting turntable (6); the limiting turntable (6) is equipped with a carrying rope (7) by winding; one end of the carrying rope (7) is fixedly connected to the limiting turntable (6); the other end of the carrying rope (7) passes through the fixed box (4) and is connected to the extension mechanism (2); the brake reducer (9) is installed in the fixed box (4) on one side of the middle of the lifting shaft (5) through the lifting motor (8); the brake reducer (9) is connected to the lifting shaft (5) through a transmission pair; The expansion mechanism (2) includes an assembly box (13) and expansion units (14); four sets of expansion units (14) are symmetrically arranged inside the assembly box (13); the four sets of expansion units (14) are interconnected; one side of the expansion unit (14) extends into the assembly box (13) and is connected to the hanger rod (3); the expansion unit (14) includes a winding shaft (15), an unwinding shaft (20), a guide tube (17), a winding reel (16), a rack section (19), and an end rack (18); the winding shaft (15) is mounted inside the assembly box (13) via a bearing seat; the winding reel (16) is symmetrically mounted on the winding shaft (15); the guide tube (17) is mounted on the assembly box (13) on one side of the winding reel (16); the end rack (18) is slidably mounted inside the guide tube (17); one end of the end rack (18) extends into the assembly box (13) and is connected to the hanger rod. (3); The other end of the end rack (18) is connected to a number of rack sections (19) in sequence by hinge; One end of each rack section (19) is wound around the take-up reel (16) multiple times and then fixedly connected to it; The assembly box (13) below the guide tube (17) is equipped with an unwinding shaft (20) through a bearing seat; Two sets of unwinding gears (21) are symmetrically fixed on the unwinding shaft (20); The unwinding gears (21) pass through the corresponding guide tube (17) and mesh with the end rack (18) inside it; The ends of the take-up shafts (15) of the four sets of extension units (14) are connected to each other through helical gear pairs, and the end of one of the take-up shafts (15) is connected to the take-up motor (22); The ends of the unwinding shafts (20) of the four sets of extension units (14) are connected to each other through helical gear pairs, and the end of one of the unwinding shafts (20) is connected to the unwinding motor (23). The guide tube (17) is provided with guide arc plates (24) at the upper and lower parts of one end.

2. A mosquito net frame according to claim 1, characterized in that: The mounting rod (3) includes a main mounting rod (10) and a secondary mounting rod (11); the main mounting rod (10) has a hollow tubular structure; secondary mounting rods (11) are inserted on both sides of the main mounting rod (10); multiple mounting holes (12) are provided at the lower part of the main mounting rod (10) and the lower part of the secondary mounting rod (11).

3. A mosquito net frame according to claim 1, characterized in that: The expansion mechanism (2) includes an assembly box (13), an upper guide sleeve (28), a lower guide sleeve (29), a telescopic rack (30), an expansion motor (25), an upper expansion gear (26), and a lower expansion gear (27); the upper expansion gear (26) and the lower expansion gear (27) are mounted vertically on the middle of the assembly box (13) via the expansion motor (25); two sets of upper guide sleeves (28) are symmetrically mounted on the assembly box (13) on both sides of the upper expansion gear (26); a telescopic rack (30) is slidably mounted inside the upper guide sleeve (28); the upper expansion gear... The wheel (26) extends into the upper guide sleeve (28) and meshes with the telescopic rack (30); two sets of lower guide sleeves (29) are symmetrically mounted on the assembly boxes (13) on both sides of the lower extension gear (27); the lower guide sleeve (29) and the upper guide sleeve (28) are arranged in a cross shape; the telescopic rack (30) is slidably mounted in the lower guide sleeve (29); the lower extension gear (27) extends into the lower guide sleeve (29) and meshes with the telescopic rack (30); the telescopic rack (30) extends to the outside of the assembly box (13) and then connects with the mounting rod (3).

4. A mosquito net frame according to claim 1, characterized in that: The extended mechanism (2) includes an assembly box (13), a telescopic scissor lift (31), a control cylinder (32), and a control plate (33); multiple sets of telescopic scissor lifts (31) are symmetrically arranged inside the assembly box (13); the upper hinge point of one end of the telescopic scissor lift (31) is connected to the top of the assembly box (13); the control plate (33) is mounted in the center inside the assembly box (13) through the control cylinder (32); the control plate (33) is hinged to the lower hinge point of one end of the telescopic scissor lift (31); the telescopic scissor lift (31) extends to the outside of the assembly box (13) and is connected to the mounting rod (3).

5. A mosquito net frame according to claim 1, characterized in that: The expansion mechanism (2) includes an assembly box (13) and an expander (34); the expander (34) is symmetrically installed inside the assembly box (13); the expander (34) includes an expansion box (35), an outer expansion rack (36), an inner expansion rack (37), and a control gear (41); the expansion box (35) is fixedly installed inside the assembly box (13); the outer expansion rack (36) is slidably installed inside the expansion box (35); multiple inner expansion racks (37) are slidably installed sequentially inside the expansion box (35) on one side of the outer expansion rack (36); one end of the outermost inner expansion rack (37) is fixedly connected to the expansion box (35); the control gear (41) is mounted on the assembly box (13) below one end of the inner expansion rack (37) via a motor; the control gear (41) extends... The expansion box (35) is intermittently meshed with the outer expansion rack (36) and the inner expansion rack (37); the outer side of the inner expansion rack (37) is provided with a guide rail (38); the inner side of the inner expansion rack (37) is provided with a guide groove (39); the inner expansion rack (37) is slidably connected to the guide groove (39) of the adjacent inner expansion rack (37) through the guide rail (38); the inner side of the outer expansion rack (36) is provided with a guide groove (39); the outer expansion rack (36) is slidably connected to the guide rail (38) of the corresponding inner expansion rack (37) through the guide groove (39); spring plungers (40) are installed at the upper and lower ends of the guide groove (39); the first section of the guide rail (38) is provided with a connecting groove; the spring plungers (40) are intermittently engaged with the corresponding connecting groove.

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